[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Irregular Openings"] [Black "?"] [Result "*"] [ECO "A00/01"] [PlyCount "72"] {[%evp 0,72,28,-68,-57,-72,-29,-19,-18,-93,-71,-85,-63,-75,-56,-58,-39,-62,-9, -15,-9,-25,-34,-34,-28,-30,-33,-32,-31,-31,-28,-28,-28,-25,-25,-30,-27,-34,-21, -35,-5,-5,-2,-18,11,-13,-11,-27,-29,-23,-23,-9,-9,-5,-22,-15,-15,2,11,11,0,16, 11,11,11,19,19,14,0,0,0,0,0,0,0]} 1. b4 (1. Nc3 d5 (1... e5 2. Nf3 (2. d4 exd4 3. Qxd4 Nc6 (3... Nf6 4. Bg5 Be7 5. Bxf6 Bxf6 6. Qe3+ Qe7 7. Qxe7+ Bxe7 8. Nd5 Bd8 9. e4 O-O 10. Nc3 d6 11. f4 c6 12. O-O-O Re8 13. g3 Bc7 14. Bh3 Bxh3 15. Nxh3 {Justesen,A (2000)-Veroni,A (1927) ICCF 2010 1/2}) 4. Qd3 (4. Qe3+ Nge7 5. Bd2 d5 6. Nb5 a6 7. Na3 Be6 8. Nf3 Nf5 9. Qb3 Nd6 10. e3 Ne4 11. c3 Bc5 12. Rd1 O-O 13. Nb1 Re8 14. Be2 d4 15. Qxb7 Bd5 {Drost,R (1927)-Marshall,I (1844) ICCF 2018 0-1}) (4. Qe4+ Qe7 5. Qxe7+ Ngxe7 6. Bg5 f6 7. Bh4 a6 8. O-O-O d6 9. e4 Be6 10. Nf3 O-O-O 11. Bg3 g6 12. Nd5 Bg7 13. Nxe7+ Nxe7 14. Nd4 Bf7 15. f4 f5 { Fonseca,P (1788)-Dekker,G (1673) ICCF 2018 1/2 (28)}) 4... Nf6 5. Bf4 d5 6. Nb5 Bd6 7. Qe3+ Be6 8. O-O-O Ng4 9. Qf3 Bxf4+ 10. Qxf4 Nge5 11. Qg3 O-O 12. e3 a6 13. Nc3 Qf6 {Miedema,H (1261)-Ashmore,B ICCF 2016 0-1}) (2. g3 Nf6 (2... d5 3. d4 (3. Bg2 c6 (3... d4 4. Nb1 (4. Na4 Nf6 5. b3 c6 6. Nf3 e4 7. Ng5 b5 8. Nb2 Qd5 9. d3 Bf5 10. c4 dxc3 11. dxe4 cxb2 12. Bxb2 Nxe4 13. Nxe4 Bxe4 14. Qxd5 Bxd5 15. Bxd5 {Armstrong,J (1599)-Burridge,R (1849) ICCF 2013 0-1 (51)}) 4... Nf6 5. d3 Bd6 6. Nf3 h6 7. c3 O-O 8. e4 c5 9. c4 a6 10. O-O Nc6 11. a3 Rb8 12. Nh4 Re8 13. Nd2 Bf8 14. f4 exf4 15. gxf4 {Azzi,R (1578)-Presnyakov,V (2303) ICCF 2016 0-1 (35)}) 4. d4 e4 (4... Bd6 5. dxe5 Bxe5 6. Bd2 Nf6 7. Nf3 Bd6 8. O-O O-O 9. Bg5 h6 10. Bxf6 Qxf6 11. e4 Be6 12. exd5 Bxd5 13. Nxd5 cxd5 14. Qxd5 Nc6 {Strelecky,R (1564)-Hadley,D ICCF 2018 1/2 (26)}) 5. f3 exf3 6. Nxf3 Nf6 7. Bg5 Be7 8. Qd2 O-O 9. O-O-O Nbd7 10. Rhf1 b5 11. Bxf6 Bxf6 12. e4 b4 13. Na4 dxe4 14. Ne5 Bg5 {Parente,M (1816)-Grossi,R ICCF 2012 0-1}) (3. a3 d4 4. Na4 b5 5. Bg2 c6 6. Nc5 Bxc5 7. b3 Bb7 8. b4 Bb6 9. d3 Ne7 10. Qd2 a5 11. Rb1 Nd5 12. a4 Nc3 13. Rb3 bxa4 14. Rxc3 dxc3 {Cottrell,J-Vesciunas,T (2029) ICCF 2016 0-1 (30)}) 3... exd4 4. Qxd4 Nf6 5. Bg5 Be7 6. O-O-O O-O 7. Bxf6 Bxf6 8. Qxd5 Qxd5 9. Nxd5 Nd7 10. Nxc7 Rb8 11. Nd5 b5 12. Bh3 Bb7 13. Bxd7 Rbd8 14. Nxf6+ { Schmielewski,F-Miyata,K (1613) ICCF 2012 1-0 (26)}) (2... c6 3. Bh3 Bc5 4. Na4 d6 5. Nxc5 dxc5 6. d3 Nf6 7. Bg5 Qd6 8. Bxc8 Nbd7 9. Bxb7 Rb8 10. Ba6 Rxb2 11. Qc1 Rb6 12. Bc4 O-O 13. Nf3 Qe6 14. Bxe6 {Traylor,B-Cain,L ICCF 2010 1-0 (25)}) 3. Bg2 (3. e3 Be7 4. b3 O-O 5. d3 Nc6 6. h3 d6 7. Nf3 Bd7 8. Bb2 Nb4 9. Ba3 a5 10. Qd2 Bc6 11. e4 Nd7 12. O-O-O b5 13. Kb1 Na6 14. Ne2 b4 {Cottrell, J-Robinson,R ICCF 2014 0-1 (35)}) 3... Nc6 (3... Bc5 4. b3 O-O 5. Bb2 d5 6. Nf3 Ng4 7. e3 Nc6 8. d4 exd4 {0-1 (8) Sexton,D-Cálix,J ICCF 2007}) 4. b3 (4. d3 d5 5. Nf3 d4 (5... Bb4 6. O-O O-O 7. e4 Bxc3 8. exd5 Nxd5 9. bxc3 Nxc3 10. Qe1 Nd5 11. Nxe5 Nxe5 12. Qxe5 Nf6 13. Bg5 c6 14. Rfe1 Be6 15. Rab1 Rb8 16. Bf4 Nd5 17. Qxb8 {Kolkman,C (1869)-Riddell,R ICCF 2017 1-0}) 6. Nb1 Be7 7. O-O O-O 8. c3 h6 9. a4 Be6 10. Nbd2 Re8 11. a5 Qd7 12. Qa4 Rab8 13. Re1 a6 14. cxd4 exd4 15. Nb3 Nb4 {Henri,J (2266)-Araboga,M (2138) ICCF 2010 1-0 (52)}) 4... g6 5. Bb2 Bg7 6. Nf3 O-O 7. O-O d6 8. d3 Bd7 9. Re1 d5 10. e3 Re8 11. e4 dxe4 12. dxe4 Qc8 13. a4 Bh3 {Bush,R-Segreto,T (1679) ICCF 2018 1-0 (38)}) (2. a3 Nf6 (2... d5 3. d4 e4 (3... exd4 4. Qxd4 Nf6 5. Bg5 Be7 6. O-O-O Nc6 7. Qh4 h6 8. Nf3 Be6 9. e4 d4 10. Nb5 O-O 11. Bxf6 Bxf6 12. Qg3 Rc8 13. c3 Qe7 14. Nbxd4 Nxd4 15. cxd4 { Stöckert,M (2456)-Joppich,U (2453) ICCF 2010 1/2 (56)}) 4. Bf4 (4. f3 f5 5. Nh3 Nf6 6. Bf4 c6 7. e3 Be7 8. Be5 Nbd7 9. f4 O-O 10. Be2 h6 11. O-O Nb6 12. Qe1 Be6 13. b3 Nbd7 14. Kh1 Kh8 15. Qg3 Ng4 {Catania,D (1787)-Smiley,W (1906) ICCF 2009 1-0 (25)}) 4... Nf6 5. e3 c6 6. f3 Be7 7. fxe4 Nxe4 8. Nxe4 dxe4 9. Ne2 Bg4 10. h3 Bh4+ 11. Kd2 Bh5 12. g4 Bg6 13. c4 Nd7 {Stöckert,M (2456)-Cardelli, G (2453) ICCF 2010 1/2 (37)}) (2... c5 3. e4 Nf6 4. Bc4 Be7 5. Nf3 d6 6. O-O h6 7. d3 O-O 8. Be3 Nc6 9. Nd5 Bg4 10. c3 Na5 11. Ba2 b5 12. b4 cxb4 13. axb4 Nc6 14. Qe2 {Moser,M-Bozic,D ICCF 2011 1-0}) 3. d4 exd4 4. Qxd4 d5 5. Bg5 Be7 6. O-O-O c5 7. Qf4 h6 8. Nxd5 Nxd5 9. Bxe7 Qxe7 10. Rxd5 O-O 11. e3 Nd7 12. Qd6 Qxd6 13. Rxd6 Nf6 {Solomachev,A-Hardwick,M (1343) ICCF 2016 1-0 (39)}) (2. b3 d5 3. e3 Nf6 4. Bb2 c6 5. g3 Bd6 6. Bg2 O-O 7. Nge2 Bf5 8. f4 Nbd7 9. O-O exf4 10. Nxf4 Bg4 11. Qc1 Ne5 12. d4 Ng6 13. Nxg6 hxg6 {Michas,J (1803)-Nilsson,E (1772) ICCF 2017 1/2 (80)}) 2... Nc6 (2... d5 3. Nxe5 d4 4. Nb1 (4. Nb5 a6 5. Na3 Qf6 6. Nf3 Nc6 7. e4 dxe3 8. d4 exf2+ 9. Kxf2 Bxa3 10. bxa3 Nge7 11. Bg5 Qd6 12. Qd2 O-O 13. Rb1 Ng6 14. Be2 f6 15. Be3 f5 {Mary,P (2195)-Saglione,E ICCF 2005 1/2 (67)}) 4... Bd6 (4... Nf6 5. c3 Be7 6. Qa4+ Nbd7 7. Nxd7 Bxd7 8. Qxd4 O-O 9. d3 c5 10. Qf4 Bc6 11. e4 Bd6 12. Qf3 c4 13. Be3 Bc7 {0-1 (13) Manarin,F (1655)-Voiculescu,C (2066) ICCF 2006}) 5. Nc4 Nf6 6. Nxd6+ (6. e3 c5 7. exd4 cxd4 8. Nxd6+ Qxd6 9. Be2 O-O 10. d3 Nc6 11. O-O Be6 12. Re1 Rfe8 13. Nd2 Rad8 14. Bf3 h6 15. Ne4 Nxe4 16. Bxe4 Bd5 17. Bxd5 Qxd5 {Vajas,S (1943) -Krammel,J (1949) ICCF 2018 1/2 (32)}) 6... Qxd6 7. e3 c5 8. Be2 Nc6 9. d3 dxe3 10. Bxe3 Nd4 11. Nd2 O-O 12. Bf3 Be6 13. O-O Rac8 14. Re1 {Berger,B (1584) -Hjorth,J (1778) ICCF 2019 1-0 (28)}) (2... d6 3. d4 Bg4 (3... exd4 4. Nxd4 Ne7 5. e4 c5 6. Ndb5 Nec6 7. Bf4 Ne5 8. Qd2 Nbc6 9. O-O-O Nd4 10. Nxd4 cxd4 11. Qxd4 Nc6 12. Bb5 Bd7 13. Bxc6 bxc6 14. Bxd6 Qg5+ 15. Kb1 {Berger,B-Gunning,E ICCF 2019 1-0}) (3... f6 4. dxe5 fxe5 5. e4 Nc6 6. Bc4 h6 7. Nxe5 Nxe5 8. Qh5+ Ke7 9. Bb3 g6 10. Qe2 Nf6 11. Nd5+ Ke6 12. Nxc7+ Kd7 13. Nxa8 b6 14. Qb5+ Ke7 15. Bf4 {Berger,B (1804)-Jimenez,J ICCF 2020 1-0}) 4. dxe5 Nd7 5. exd6 Bxd6 6. Qd3 Ne7 7. Ng5 O-O 8. Qxh7# {1-0 (8) Ridout,P (1530)-Wise,R (1426) ICCF 2017}) (2... Nf6 3. Nxe5 c6 (3... Bb4 4. Nf3 O-O 5. e3 d5 6. a3 Bg4 7. axb4 d4 8. Ne2 Ne4 9. Nexd4 Nxf2 10. Kxf2 Qf6 11. Be2 Na6 12. c3 c5 13. bxc5 Nxc5 14. b4 Nd7 15. h3 {Rouse,L (1417)-Johnson,B ICCF 2020 1-0 (31)}) 4. d4 Bb4 5. Bd2 O-O 6. e3 Re8 7. a3 Bxc3 8. Bxc3 d6 9. Nc4 Bg4 10. Be2 Bxe2 11. Qxe2 Re6 12. O-O Nbd7 13. Ba5 b6 14. Be1 {Iriarte Gómez,E (2240)-Simoncic,L ICCF 2007 1-0 (51)}) ( 2... Qe7 3. Nd5 Qc5 4. e4 c6 5. Nc7+ Ke7 6. Nxa8 Nf6 7. c3 Nxe4 8. Qe2 b6 9. Qxe4 d5 10. Qxe5+ {1-0 (10) Fuhr,M (2249)-Navara,E (1490) ICCF 2012}) (2... f5 3. Nxe5 Qf6 4. d4 d6 5. Nd5 Qd8 6. Bg5 Be7 7. Nxe7 Nxe7 8. Nd3 h6 9. Bxe7 Qxe7 10. Nf4 Qf7 11. e3 g5 12. Be2 O-O 13. Bh5 Qg7 14. Nd3 {Drost,R (1893)-Boer,J (1696) ICCF 2018 0-1}) 3. d4 (3. g3 d5 4. d3 (4. Bg2 d4 5. Nb5 a6 6. Na3 e4 7. Ng1 Nf6 8. c3 Bc5 9. Nc4 Be6 10. Qb3 b5 11. cxd4 Bxc4 12. Qe3 Nxd4 13. Bxe4 O-O 14. Qf4 Nxe4 15. Qxe4 Re8 {Vaessen,J (1789)-Knigge,M (1709) ICCF 2017 0-1}) (4. d4 e4 5. Ne5 Nge7 6. Bg2 Nxe5 7. dxe5 c6 8. O-O Be6 9. Bg5 h6 10. Bd2 Ng6 11. f4 exf3 12. exf3 Bc5+ 13. Kh1 Nxe5 14. Na4 Bd6 15. f4 Nc4 {Driessen,C (1866) -Benes,J (1892) ICCF 2010 0-1 (53)}) 4... f5 5. Bg2 Be7 6. d4 e4 7. Ng1 h6 8. h4 Nf6 9. Nh3 Be6 10. Bf4 a6 11. Qd2 Qd7 12. O-O-O O-O 13. Be3 a5 14. Nf4 Bf7 { Ferreira,L (1892)-Oppermann,P (2249) ICCF 2020 0-1}) (3. Ne4 f5 4. Ng3 d6 5. c4 Nf6 6. d3 Be7 7. Bd2 O-O 8. b4 a6 9. e3 Be6 10. Be2 Rb8 11. O-O Qd7 12. Ng5 h6 13. Nxe6 Qxe6 14. a4 Nd8 {Balicki,C-Randolph,D (1788) ICCF 2008 0-1 (44)}) (3. e3 d5 4. Bb5 Bg4 5. h3 Bh5 6. g4 Bg6 7. Nxe5 Nge7 8. Qf3 f6 9. Nxg6 hxg6 10. Bxc6+ bxc6 11. d4 Nc8 12. Bd2 Nb6 13. O-O-O Rb8 14. e4 Be7 {Mohammed,H-Broun,M ICCF 2011 1-0 (34)}) 3... exd4 (3... e4 4. Nxe4 d5 5. Nc3 Nf6 6. Bg5 Be7 7. e3 Bg4 (7... O-O 8. Be2 h6 9. Bh4 Ne4 10. Bxe7 Nxe7 11. Nxe4 dxe4 12. Nd2 Bf5 13. O-O Qd6 14. c4 Rfe8 15. Rc1 Rad8 16. b4 a6 17. a3 Qg6 18. Kh1 Qg5 19. Qc2 { Allmer,C-Oen,G ICCF 2012 1-0 (36)}) 8. h3 Bh5 9. Be2 h6 10. Bxf6 Bxf6 11. Qd3 Bg6 12. Qb5 Rb8 13. Bd3 O-O 14. Bxg6 fxg6 15. Qxd5+ {Baumann,W (2026)-Cardenas, I (1441) ICCF 2013 1-0 (40)}) (3... d6 4. dxe5 (4. d5 Nb8 5. e4 Be7 6. Bd3 Nf6 7. O-O O-O 8. a4 Bg4 9. h3 Bh5 10. a5 a6 11. Be3 Qc8 12. Na4 Nxd5 13. exd5 f5 14. Be2 f4 15. Bd2 Nd7 {Drost,R (1898)-Pajukari,S (1752) ICCF 2015 1/2 (30)}) 4... dxe5 5. Nd5 (5. Qxd8+ Nxd8 6. Nxe5 Bb4 7. Bd2 Be6 8. Nb5 Bxd2+ 9. Kxd2 Rc8 10. Nxa7 Ra8 11. Nb5 Rc8 12. Rd1 Ne7 13. Kc1 O-O 14. e3 c6 15. Nd4 Bd5 16. Nd7 Re8 {Berger,B (1804)-Hodgkins,N ICCF 2020 1-0 (44)}) 5... Be6 6. e4 Nf6 7. Bc4 Nxe4 8. O-O Nf6 9. c3 Bxd5 10. Bd3 e4 11. Be2 exf3 12. Bxf3 g6 13. Re1+ Be7 14. Qd3 Qd7 15. Bf4 {Kaminski,P (1563)-Jones,C (1803) ICCF 2012 1-0 (28)}) (3... d5 4. dxe5 (4. e4 Bg4 5. Be2 exd4 6. Nxd4 Bxe2 7. Ndxe2 Nf6 8. Nxd5 Nxe4 9. Ndc3 Qxd1+ 10. Nxd1 O-O-O 11. f3 Nb4 12. fxe4 Nxc2+ 13. Kf2 Nxa1 14. Be3 Nc2 15. Ndc3 Nxe3 {Wright,D (1613)-Gibson,C (1316) ICCF 2013 0-1}) (4. Nxe5 Nxe5 5. dxe5 Bb4 6. Bd2 c6 7. e3 Ne7 8. Bd3 O-O 9. O-O b5 10. h3 Nf5 11. a4 d4 12. Ne2 Bc5 13. e4 Nh4 14. b4 Bxb4 15. Bxb4 Nf3+ {Strelecky,R-Gunning,E ICCF 2015 1-0 (28)}) 4... Bb4 5. Bd2 Nge7 6. a3 Bxc3 7. Bxc3 O-O 8. g3 Re8 9. Bg2 a5 10. O-O Ng6 11. Qd2 h6 12. Rad1 Be6 13. h4 b5 14. h5 Nge7 15. Qf4 {Baffo,J-Holsinger,C ICCF 2013 1-0 (31)}) (3... Bd6 4. d5 (4. dxe5 Bxe5 5. Nxe5 Nxe5 6. Qd4 d6 7. f4 Nc6 8. Qxg7 Qf6 9. Qxf6 Nxf6 10. e4 Bd7 11. Bd3 O-O-O 12. O-O Rhg8 13. e5 dxe5 14. fxe5 Ng4 15. Bxh7 Rge8 {Wyder,B (1932)-Dahlstrom,B ICCF 2008 1-0 (26)}) 4... Nb4 5. a3 Na6 6. e4 Nf6 7. Bxa6 bxa6 8. O-O O-O 9. Qd3 Be7 10. Nxe5 d6 11. Nc6 Qd7 12. Bg5 h6 13. Bh4 g5 14. Bg3 Ng4 15. h3 {Speybroeck,D (1995)-Kissick, P (1816) ICCF 2005 1-0}) (3... Qe7 4. d5 Nb4 5. a3 Na6 6. e4 d6 7. Be3 Nf6 8. h3 Nc5 9. Bxc5 dxc5 10. Qd2 Qd8 11. Nxe5 Qe7 12. f4 g6 13. Bb5+ Bd7 14. Bxd7+ Nxd7 15. Nxd7 {Berger,B-Ritzmann,A (1670) ICCF 2019 0-1 (26)}) (3... f6 4. dxe5 fxe5 5. e4 Nf6 6. Bg5 h6 7. Bxf6 gxf6 8. Bb5 Ne7 9. Nxe5 h5 10. Qf3 fxe5 { 0-1 (10) Berger,B (1584)-Gunning,E ICCF 2019}) (3... Bb4 4. Qd3 d5 5. e4 dxe4 6. Qxe4 Nf6 7. Qe3 O-O 8. Bd2 Ng4 9. Qd3 Qe7 10. Be2 Bxc3 11. Qxc3 e4 12. Ng1 Bf5 13. h3 Nf6 14. O-O-O Rad8 15. Be3 {Wright,D (1651)-Gibson,C (1283) ICCF 2013 1-0 (40)}) 4. Nxd4 Nf6 (4... Bc5 5. Nxc6 (5. Be3 Bb6 (5... Bxd4 6. Bxd4 Nxd4 7. Qxd4 Qf6 8. Qe3+ Kd8 9. O-O-O {1-0 (9) Azevedo,J (2272)-Gaspar,F (1588) ICCF 2016}) 6. Nd5 (6. Nf5 Bxe3 7. Nxe3 d6 8. Qd2 Nf6 9. O-O-O O-O 10. g3 Rb8 11. Bg2 Be6 12. h3 Ne5 13. f4 Nc4 14. Nxc4 Bxc4 15. b3 Be6 16. e4 h6 17. Rhe1 b5 {Fischer,D (2398)-Mayr,F (2434) ICCF 2005 0-1 (33)}) 6... Nge7 (6... Nf6 7. Nxb6 axb6 8. Bg5 Ra5 9. Nxc6 bxc6 10. Qd4 Rxg5 11. Qe3+ Ne4 12. Qxe4+ Qe7 13. Qxe7+ Kxe7 14. e3 d6 15. h4 Ra5 16. Bd3 h5 17. a3 Be6 18. Kd2 {Fuhr,M (2220) -Probola,R (2194) ICCF 2013 1/2 (46)}) 7. Nxb6 axb6 8. Nb5 O-O 9. Bf4 d6 10. e3 Re8 11. Be2 Ng6 12. Bg3 Bd7 13. Nc3 Nce5 14. f4 Nc6 15. Qd2 Bf5 16. O-O Qd7 { Riihimäki,V (1999)-Mujunen,M (1887) ICCF 2019 1-0 (53)}) (5. Nb3 Bb6 (5... Bb4 6. Qd3 d5 7. a3 Bxc3+ 8. Qxc3 Qf6 9. Bd2 d4 10. Qg3 Nge7 11. O-O-O Bf5 12. Bg5 Qe6 13. Bxe7 Qxe7 14. Nxd4 Nxd4 15. Rxd4 O-O 16. e3 c5 17. Qd6 {Kokorin,V (2177)-Wilshusen,H (1665) ICCF 2013 1-0 (30)}) 6. a4 (6. Nd5 Nge7 7. Nxb6 axb6 8. e4 d6 9. Bb5 Bd7 10. O-O O-O 11. Be3 f5 12. Bc4+ Kh8 13. Bd3 f4 14. Bd2 f3 15. g3 Ne5 16. Bc3 N7g6 17. Bxe5 Nxe5 {Wright,D (1618)-Cardenas,I (1367) ICCF 2016 0-1}) 6... a6 7. Bf4 Nf6 8. a5 Ba7 9. h3 d5 10. e3 O-O 11. Be2 Bf5 12. Ra4 Qd7 13. Bf3 h6 14. g4 Bg6 15. Nxd5 Nxd5 16. Qxd5 Qxd5 {Riihimäki,V (1955) -Tellier,B (1986) ICCF 2008 1/2}) (5. Nf5 Qf6 (5... g6 6. Be3 Bb6 7. Bxb6 axb6 8. Ne3 Nf6 9. g3 O-O 10. Bg2 d6 11. Qd2 Ra5 12. O-O Re8 13. a3 Be6 14. b4 Rh5 15. Bf3 Re5 16. b5 Na5 17. Qd4 {O'Neill-MCAleenan,C (1751)-Dearnley,J ICCF 2008 1/2}) 6. g4 Bb4 7. Bd2 Nge7 8. a3 Ba5 9. Nxe7 Nxe7 10. e4 d5 11. exd5 O-O 12. Qe2 Qh4 13. O-O-O Bxg4 14. f3 Bf5 15. Qc4 Ng6 16. Qb5 Bb6 {Markoja,J (2143) -Ivanovic,Z (2324) ICCF 2015 0-1 (28)}) 5... bxc6 (5... Qf6 6. Ne4 Qxc6 7. Nxc5 Qxc5 8. Be3 Qb4+ 9. Qd2 Qxd2+ 10. Bxd2 Ne7 11. e4 O-O 12. O-O-O d6 13. h4 Be6 14. b3 f5 15. exf5 Bxf5 16. f3 Nc6 17. Bc4+ {Tavenrath,R-Parsons,C (1646) ICCF 2012 1/2}) 6. g3 (6. e3 Nf6 7. Bd3 (7. Na4 Bd6 8. b3 O-O 9. Bd3 Bb7 10. Qf3 Qe7 11. Bb2 Be5 12. Bxe5 Qxe5 13. O-O Rfe8 14. c4 d6 15. Rac1 Rad8 16. Rfd1 Bc8 17. Rd2 Qa5 18. Rdc2 h6 {Kokorin,V (2157)-Semenov,V (2241) ICCF 2017 1/2 (52)}) 7... d5 8. O-O O-O 9. b3 Qe7 10. Bb2 Bg4 11. Be2 Bf5 12. Na4 Bd6 13. c4 Rfe8 14. cxd5 cxd5 15. Bxf6 Qxf6 16. Bf3 c6 17. a3 Rad8 {Drost,R (1898) -Kerssemakers,H (1962) ICCF 2015 0-1}) 6... Nf6 7. Bg2 O-O 8. O-O Re8 9. Na4 Bd6 10. c4 (10. Re1 Ne4 11. Qd3 Qe7 12. c4 Nc5 13. Nxc5 Bxc5 14. Bf4 Bb4 15. Red1 Qxe2 16. a3 Qxd3 17. Rxd3 Bd6 18. Bxd6 cxd6 19. Rxd6 a5 20. Bh3 Rb8 21. Bxd7 Bxd7 {Lautenbach,W (2209)-Kasperek,R ICCF 2004 1/2 (28)}) 10... Qe7 11. Re1 Bb4 12. Bd2 a5 13. e4 d6 14. Qc2 Rb8 15. a3 Bxd2 16. Qxd2 {Nagel,H (2170) -Silin,V (2315) ICCF 2013 1/2 (44)}) (4... Bb4 5. Nxc6 (5. Qd3 Qf6 6. Ndb5 Ba5 7. Bd2 (7. Qg3 d6 8. Bd2 Nge7 9. O-O-O Bb6 10. f4 a6 11. Na3 Qg6 12. e4 Qxg3 13. hxg3 Bc5 14. Nc4 Bg4 15. Be2 Bxe2 16. Nxe2 b5 17. Ne3 O-O-O 18. g4 Kb7 { Henri,J (2334)-Heilala,T (2338) ICCF 2009 1/2 (30)}) 7... Nge7 8. O-O-O O-O 9. Ne4 Bxd2+ 10. Qxd2 Qe5 11. Nec3 Nb4 12. e4 a6 13. f4 Qc5 14. Qd4 Qxd4 15. Rxd4 Nxa2+ 16. Nxa2 axb5 {Wieringen,C (2300)-Markkula,M (2083) ICCF 2004 1/2 (32)}) 5... Bxc3+ (5... bxc6 6. Qd4 Bxc3+ 7. Qxc3 Nf6 8. Bg5 O-O 9. Bxf6 Qxf6 10. Qxf6 gxf6 11. e3 d5 12. Be2 Bf5 13. c4 dxc4 14. Bxc4 Be6 15. Rc1 Rab8 16. b3 Rfe8 17. Ke2 {Lugli,A-Parente,M (2015) ICCF 2011 1-0 (41)}) 6. bxc3 bxc6 7. Qd4 Qf6 (7... f6 8. Ba3 Ne7 9. e4 d6 10. Bc4 Bd7 11. O-O {1/2 (11) Drost,R (1838) -Gnirk,H (2019) ICCF 2016}) 8. g3 Qg6 9. Bg2 Ne7 10. e4 O-O 11. O-O d6 12. f4 c5 13. Qa4 c6 14. f5 Qf6 15. Bf4 Rd8 16. Rad1 {Matheis,T (2292)-MacArainn,G ICCF 2007 1-0}) (4... Nxd4 5. Qxd4 Nf6 6. Nb5 Be7 7. Bf4 d6 8. e3 a6 9. Nc3 c5 10. Qd2 {Strelecky,R (1577)-Bystrický st.,K (1599) ICCF 2020}) (4... Qf6 5. Nxc6 Qxc6 6. e4 Bb4 7. Qd4 Bxc3+ 8. bxc3 f6 9. Bc4 Ne7 10. O-O d6 11. Qd3 Bd7 12. a4 a6 13. Bd2 O-O-O 14. Bd5 Nxd5 15. exd5 Qc5 16. Be3 {Wright,D (1618) -Baer,S (1540) ICCF 2015 1-0}) 5. Bg5 (5. Bf4 Bb4 6. g3 Nd5 7. Qd2 O-O 8. a3 Bxc3 9. bxc3 Nxf4 10. Qxf4 Ne7 11. Bg2 Ng6 12. Qd2 Re8 13. O-O c6 14. e4 Ne5 15. Rfb1 d6 16. f4 Ng4 {Buchaillot,L (1934)-Menéndez Rodríguez,G ICCF 2007 1/2 (38)}) (5. Nxc6 bxc6 6. Qd4 Be7 7. e4 d5 8. Qa4 O-O 9. Bd3 Bd7 10. O-O c5 11. Qa6 d4 12. Ne2 Re8 13. f3 Bd6 14. c3 dxc3 15. Nxc3 c6 16. f4 c4 {Wyder,B (1932) -Sarabia Utrilla,J (1967) ICCF 2008 1-0 (70)}) 5... h6 (5... Bb4 6. Nxc6 (6. Qd3 O-O (6... h6 7. Bh4 O-O 8. a3 Ba5 9. Nb3 Ne5 10. Qg3 Bxc3+ 11. Qxc3 d6 12. f3 Re8 13. O-O-O Qe7 14. e3 Ne4 15. Qe1 Nf6 16. e4 a6 17. Kb1 b5 18. Be2 { Henri,J (2386)-Vohl,G (1949) ICCF 2008 1/2}) 7. a3 (7. O-O-O Bxc3 8. Qxc3 Ne4 9. Bxd8 Nxc3 10. bxc3 Nxd8 11. g3 d6 12. Bg2 Re8 13. Rhe1 a6 14. h3 Rb8 15. e3 g6 16. Rd2 Ne6 17. Red1 Nc5 18. c4 Na4 {Freeman,D-Lightowlers,O (2339) ICCF 2012 0-1 (29)}) (7. f4 h6 8. Bh4 d5 9. Nxc6 bxc6 10. a3 Ba5 11. e4 g5 12. b4 Nxe4 13. Nxe4 gxh4 14. bxa5 Bf5 15. Be2 Bxe4 16. Qh3 Qf6 17. O-O Bxc2 18. Rac1 Be4 {Fuhr,M (2283)-Aupí Royo,R (2117) ICCF 2009 0-1 (36)}) 7... Ne5 (7... Ba5 8. Nb3 Ne5 9. Qd4 Bxc3+ 10. Qxc3 Re8 (10... d6 11. f3 Be6 12. Nc5 Bc8 13. Nd3 h6 14. Bh4 Ng6 15. Bxf6 Qxf6 16. Qxf6 gxf6 17. e3 Bd7 18. h4 h5 19. Nc1 Kg7 20. Bd3 Rfe8 21. Kf2 Kh6 22. Ne2 {Mailfert,J (2320)-Fister,B (2347) ICCF 2011 1-0 (70)}) 11. e3 d6 12. Bd3 Bd7 13. Nd2 Rc8 14. O-O-O a6 15. f4 Neg4 16. Rde1 h6 17. h3 Nf2 18. Bxf6 Qxf6 19. Qxf6 {Henri,J (2335)-Yuk Man,T (2295) ICCF 2006 1/ 2 (30)}) (7... Bc5 8. Nxc6 bxc6 9. Qc4 (9. e3 d5 10. Be2 h6 11. Bh4 a5 12. O-O Bd6 13. Rfe1 Re8 14. Bf3 Rb8 15. e4 d4 16. Na4 c5 17. b3 g5 18. Bg3 Bxg3 19. hxg3 Re5 20. Qd2 c4 {Henri,J (2386)-Ornek,O (2189) ICCF 2008 1/2 (37)}) 9... Be7 10. e3 h6 11. Bf4 Rb8 12. Rb1 c5 13. e4 Rb6 14. Bd3 c6 15. Qa2 d5 16. O-O Be6 17. b3 Nh5 18. Bd2 c4 19. Be2 {Figiel,R-Debowski,S ICCF 2014 0-1 (28)}) 8. Qg3 Bxc3+ 9. Qxc3 d6 10. Nf3 Re8 11. O-O-O Bd7 (11... Bf5 12. Nxe5 Rxe5 13. Qxe5 dxe5 14. Rxd8+ Rxd8 15. g4 Be4 16. f3 Bc6 17. e4 b6 18. Bh4 Rd6 19. Bc4 Kf8 20. Bg3 Nd7 21. b4 f6 22. h4 Ke7 23. g5 {Matheis,T (2354)-Delavekouras,S (2442) ICCF 2007 1/2 (39)}) 12. Nxe5 Rxe5 13. h4 Rc8 14. e3 Qe7 15. Bd3 h6 16. Bxf6 Qxf6 17. f4 Re6 {Henri,J (2337)-Bekemann,U (2171) ICCF 2007 1/2 (26)}) (6. e3 O-O (6... h6 7. Bh4 O-O 8. Be2 d6 9. O-O Bxc3 10. bxc3 Ne5 11. Nb5 Ned7 12. c4 g5 13. Bg3 Ne4 14. Bd3 Nxg3 15. hxg3 Nf6 16. Rb1 Re8 17. Re1 Bd7 18. f3 { Nielsen,J (2027)-Hamilton,D (1951) ICCF 2014 1/2 (25)}) 7. Qf3 Nxd4 8. exd4 Re8+ 9. Be2 d5 {De Smet,K (2220)-Moens,A (2134) ICCF 2009}) (6. Qd2 h6 7. Bh4 O-O 8. f3 Ne5 9. e4 c5 10. Ndb5 d5 11. Qxd5 Nxd5 12. Bxd8 Nxc3 13. bxc3 Rxd8 14. cxb4 cxb4 15. Nc7 Rb8 16. a3 Bd7 17. Nd5 bxa3 {Taksrud,V (2134)-Chilson,S (2141) ICCF 2019 1/2 (39)}) 6... bxc6 (6... Bxc3+ 7. bxc3 bxc6 8. Qd4 (8. e3 h6 9. Bh4 O-O 10. Bd3 Rb8 11. O-O d5 12. Qc1 g5 13. Bg3 Qe7 14. f3 Re8 15. Re1 Be6 16. Qd2 c5 17. c4 dxc4 18. Bf1 g4 19. e4 gxf3 {Tosi,F (2411)-Strengell,O (2277) ICCF 2006 1-0 (31)}) 8... h6 (8... d6 9. g3 Rb8 (9... c5 10. Bxf6 Qxf6 11. Qxf6 gxf6 12. Rb1 c6 13. Kd2 Kd8 14. e3 Kc7 15. Be2 Be6 16. c4 Rab8 17. Rb3 Rb4 18. Rhb1 Rhb8 19. Kc3 R4b6 20. a4 Rxb3+ 21. Rxb3 {Leupold,V (2384)-Vecek,M (2289) ICCF 2014 1/2 (32)}) (9... Bd7 10. O-O-O O-O 11. Bxf6 Qxf6 12. Qxf6 gxf6 13. c4 c5 14. Rd3 Bc6 15. Rg1 a5 16. Bh3 Rfe8 {1/2 (16) Marku,G (2020)-Docevski,B ICCF 2020}) (9... h6 10. Bxf6 Qxf6 11. Qxf6 gxf6 12. Bg2 Kd7 13. Kd2 a5 14. Rab1 Re8 15. e3 Ba6 16. Bh3+ Ke7 17. Rb2 Reb8 18. Rhb1 Rb5 19. Rxb5 cxb5 20. e4 c6 21. a3 {Glanville,C (2119)-Lauer,R (2042) ICCF 2012 1/2 (32)}) 10. Qxa7 Rb5 11. Qe3+ Re5 12. Qf4 Rf5 13. Qh4 O-O 14. g4 Rxg5 15. Qxg5 Re8 16. h3 Ba6 17. Qa5 Bc4 18. e3 Bd5 19. Rg1 Ne4 20. Bd3 {Kokorin,V (2188)-Usbeck,K (2226) ICCF 2013 1/2 (55)}) (8... O-O 9. Rb1 d6 10. Bxf6 Qxf6 11. Qxf6 gxf6 12. g3 Be6 13. Bg2 Rab8 14. Rxb8 Rxb8 15. Bxc6 Rb6 16. Bf3 Rb1+ 17. Kd2 Rxh1 18. Bxh1 Bxa2 { 0-1 (18) Manarin,F (1969)-Latta,H (2157) ICCF 2012}) 9. Qe5+ (9. Bxf6 Qxf6 10. g3 (10. Qxf6 gxf6 11. g3 Rb8 12. Kd2 d6 13. Bg2 Bd7 14. Rhb1 Ke7 15. Rb3 Rb6 16. c4 c5 17. Ra3 a6 18. Rb3 Rhb8 19. Rab1 Rb4 20. a3 R4b6 21. Rxb6 Rxb6 { Kokorin,V (2271)-Kaupert,V (2359) ICCF 2020 (29)}) 10... Qxd4 {1/2 (10) Wieringen,C (2292)-Offenborn,H (2312) ICCF 2008}) 9... Kf8 10. Bxf6 Qxf6 11. Qxf6 gxf6 12. Rb1 Rg8 (12... d5 13. e3 Ke7 14. Kd2 Be6 15. Be2 Rhb8 16. a3 c5 17. c4 Rb6 18. Bf3 c6 19. cxd5 cxd5 20. Rhd1 Rab8 21. Rxb6 axb6 22. Kc3 Ra8 23. Kb2 Rg8 24. g3 {Vajas,S (1943)-Lagergren,H (1981) ICCF 2018 1/2 (27)}) (12... d6 13. g3 Ke7 14. Bg2 Bd7 15. Kd2 Rab8 16. Rb3 Rb6 17. h4 Rhb8 18. Rhb1 c5 19. c4 f5 20. Rxb6 axb6 21. Rb3 Be6 22. Rc3 f4 23. gxf4 Rg8 24. Rg3 {Riihimäki, V-Rhodes,J (2381) ICCF 2006 1/2 (34)}) 13. e3 (13. f4 d5 14. g3 Ke7 15. Bg2 Kd6 16. Kd2 Ba6 17. e4 h5 18. Bf3 h4 19. Rbg1 Rh8 20. g4 Bc4 21. a3 dxe4 22. Bxe4 Rhg8 23. h3 Bd5 24. Bxd5 cxd5 {Azevedo,J (2272)-Pascoal,J (2170) ICCF 2016 1/2 (29)}) (13. g3 Rg5 14. e3 Ra5 15. Rb2 d5 16. Kd2 Be6 17. Bg2 Ke7 18. Ra1 Ra4 19. Rb4 {1/2 (19) Siigur,J (2413)-Johansson,K (2460) ICCF 2016}) 13... Rg5 14. Rb2 Ke7 15. g3 Ra5 16. Kd2 d5 17. Be2 Be6 18. Rb7 {Kennedy,J (1983)-Preussner, M (2047) ICCF 2019 1-0 (56)}) (6... dxc6 7. Qxd8+ Kxd8 8. O-O-O+ Ke7 9. Ne4 h6 10. Bxf6+ gxf6 11. e3 Be6 12. a3 f5 13. Ng3 Bd6 14. Rd4 Kf6 15. Be2 Be5 16. Rh4 Rad8 17. f4 Bd6 18. Bd3 {Fuhr,M (2249)-Barbalic,Z (2067) ICCF 2012 1-0 (66)}) 7. Qd4 Be7 (7... Qe7 8. Bxf6 (8. O-O-O Bxc3 9. Qxc3 Ne4 10. Bxe7 Nxc3 11. bxc3 Kxe7 12. e3 d5 13. c4 Be6 14. Kb2 Rab8+ 15. Kc3 Kd6 16. Be2 Rhd8 17. Rd4 f5 18. cxd5 cxd5 19. Ra4 Rb7 {De Meye,J (1916)-Grobler,D (1991) ICCF 2007 1/2 (71)}) 8... gxf6 9. e3 (9. O-O-O Bc5 10. Qh4 (10. Qf4 Qe5 11. Qf3 Rb8 12. Na4 Be7 13. e4 d5 14. exd5 Rb4 15. d6 Bxd6 16. Nc3 Bg4 17. Qxc6+ Kf8 18. Bb5 Bxd1 19. Rxd1 Rf4 20. Rd2 Rd4 21. Bd3 Qe1+ {Manarin,F (1655)-Siikaluoma,A (2216) ICCF 2006 0-1}) 10... Rb8 (10... f5 11. Qf4 d5 12. Rd3 a5 13. Qh6 Bd7 14. Qg7 Rf8 15. e3 f4 16. exf4 Bxf2 17. Nd1 Bb6 18. Rd2 O-O-O 19. Qxh7 Qf6 20. g3 Kb8 21. Bg2 Bf5 22. Qh5 {Kokorin,V (2161)-Rashitov,D (2259) ICCF 2015 0-1 (63)}) 11. e3 f5 12. Qxe7+ Kxe7 {1/2 (12) Anda,H (2245)-Sadler,C (1981) ICCF 2009}) 9... c5 10. Qd3 Qe5 11. f4 Bxc3+ 12. bxc3 (12. Kf2 Qe7 13. Qxc3 Rg8 14. Rg1 Bb7 15. a3 O-O-O 16. g3 d5 17. b4 d4 18. exd4 cxd4 19. Re1 dxc3 20. Rxe7 Rd2+ 21. Re2 Rgd8 22. Bh3+ Kb8 23. Bf5 Bc8 {Ryan,P (2188)-Richardt,M (2216) ICCF 2015 1-0 (30)}) 12... Qe7 13. Rb1 O-O 14. Kf2 Re8 15. c4 Ba6 16. Qc3 Rab8 17. Rxb8 Rxb8 18. Bd3 Qe6 19. Re1 {Fuhr,M (2249)-Varjokallio,M ICCF 2012 1-0 (29)}) 8. e4 (8. O-O-O O-O 9. e4 c5 (9... d5 10. exd5 cxd5 (10... Nxd5 11. Bxe7 Qxe7 12. Bc4 Nxc3 13. Qxc3 Be6 14. Qe5 Rae8 15. Bxe6 fxe6 16. f3 Rf5 17. Qd4 Rb8 18. Qxa7 Qb4 19. Qd4 Qa5 20. a4 Rb4 21. Qd7 Qe5 22. c3 {Lacrosse,M (2218)-Schulz,G (2380) ICCF 2006 1/2 (37)}) 11. Bxf6 Bxf6 12. Qxd5 Be6 13. Qc5 Qb8 14. b3 Re8 15. Bd3 a5 16. Be4 c6 17. g3 a4 18. Nxa4 Bxb3 19. Bxh7+ Kxh7 20. cxb3 Rxa4 21. Qc2+ {Mannhart,M (2325)-Rhodes,J (2358) ICCF 2003 1/2 (26)}) 10. Qd2 (10. Qd3 d6 11. f4 (11. e5 Ng4 12. Bxe7 Qxe7 13. exd6 Qf6 14. Nd5 Qxd6 15. Qe2 Ne5 16. f4 Nc6 17. Qf2 Nd4 18. Ne3 Qc6 19. c3 Nf5 20. Bd3 Nxe3 21. Qxe3 Bb7 {1/2 (21) Henri,J (2334) -Offenborn,H (2382) ICCF 2009}) (11. h4 Bb7 12. Be2 Re8 13. e5 dxe5 14. Qg3 Qc8 15. Bb5 c6 16. Bc4 Qf5 17. Rhe1 Nd5 18. Bxe7 Rxe7 19. Ne4 h6 20. Nxc5 Rae8 21. Bxd5 cxd5 22. Nxb7 Rxb7 {Vajas,S (2021)-Laine,E (1901) ICCF 2017 1-0 (32)}) 11... Bb7 (11... Rb8 12. Be2 (12. e5 dxe5 13. Qxd8 Rxd8 14. Rxd8+ Bxd8 15. fxe5 h6 16. Bf4 Nd7 17. Be2 Nb6 18. Rd1 Be6 19. a4 (19. Be3 Be7 20. Ne4 Nd7 21. a3 Kf8 22. h3 Ke8 23. Bf4 Nb6 24. Nc3 Nc4 25. Bxc4 Bxc4 26. Nd5 Bxd5 27. Rxd5 Rb6 28. Rd3 h5 29. Rg3 Kf8 30. Rc3 Ke8 {Kokorin,V (2161)-Borisenkov,D (2288) ICCF 2012 1/2 (39)}) 19... a5 20. Bb5 Be7 21. g3 Bg4 22. Re1 Be6 23. Bd2 Rc8 { Kokorin,V (2358)-Galanov,S (2530) ICCF 2010 0-1 (56)}) 12... Rb4 13. Bf3 h6 14. Bh4 Rd4 15. Qe2 Nd5 16. Nxd5 Bxh4 17. c3 Rxd1+ 18. Rxd1 c6 19. Ne3 Qe7 20. Kb1 Rd8 21. g3 Bf6 22. h4 h5 23. Ka1 {Wettering,G (2090)-Germann,J (2229) ICCF 2012 1/2 (40)}) 12. e5 Nh5 13. Qd2 (13. h4 f6 14. exf6 Nxf6 15. Qg3 Kh8 16. Bc4 c6 17. h5 d5 18. h6 g6 19. Qh4 Rf7 20. Bd3 Nh5 21. Bxe7 Qxe7 22. f5 Qf6 23. fxg6 hxg6 24. Qxf6+ Rxf6 {Fuhr,M (2249)-Kolanek,R (2138) ICCF 2012 1-0 (59)}) 13... f6 14. exf6 Bxf6 15. Bc4+ Kh8 16. Bxf6 Nxf6 17. Rhe1 a5 18. Re3 Re8 19. Rxe8+ Qxe8 20. Re1 Qf8 21. Nb5 d5 {Manarin,F (1969)-Pedersen,S (1960) ICCF 2012 0-1 (45)}) (10. Qa4 d6 11. Bb5 Rb8 12. e5 Nd5 13. Bxe7 Nxe7 14. Rhe1 Nf5 15. Ne4 Qh4 16. exd6 cxd6 17. Bd3 Nd4 18. c3 d5 19. cxd4 dxe4 20. Rxe4 Qh6+ 21. Kb1 Bf5 {Kokorin,V (2161)-Sychov,A (2246) ICCF 2012 1/2 (40)}) 10... d6 11. e5 (11. Bc4 Rb8 12. e5 dxe5 13. Qxd8 {1/2 (13) Fuhr,M (2232)-Bresadola,G (2344) ICCF 2014} (13. Qe3 Nd7 14. f4 Bxg5 15. fxg5 Rb4 16. Bb5 Rd4 17. Bxd7 Bxd7 18. Qxe5 Bg4 19. Rde1 Be6 20. Qxc5 Rc4 21. Qe5 Rg4 22. h4 Rxg2 23. Rd1 Qa8 24. h5 Qe8 {Kokorin,V (2325)-Andersen,J (2258) ICCF 2011 1/2 (47)})) 11... dxe5 12. Qe3 Nd7 13. f4 (13. h4 Rb8 14. Bxe7 Qxe7 15. Nd5 Qd6 16. Bc4 Bb7 17. Rhe1 Rfd8 18. f4 exf4 19. Nxf4 Qf8 20. Qe7 Bc6 21. Bd5 Bxd5 22. Rxd5 Re8 23. Qxf8+ Kxf8 24. Red1 Ne5 {Lund,P (2210)-Nilson,B (2174) ICCF 2010 1-0 (42)}) 13... Rb8 ( 13... Bxg5 14. fxg5 Rb8 15. Bd3 c6 16. Rhe1 Qb6 17. b3 Qa5 18. Kb2 Re8 19. Qg3 c4 20. Bxc4 Nb6 21. Bd3 Ba6 22. Bxa6 Qxa6 23. Ne4 Kh8 24. Nd6 Nc4+ 25. Nxc4 { Nagel,H (2180)-Johansson,J (2025) ICCF 2012 1-0 (37)}) 14. Bd3 Qe8 15. Rhe1 Bxg5 16. fxg5 Qe6 17. b3 Bb7 18. Qh3 Qxh3 19. gxh3 Rfd8 {Kokorin,V (2231) -Kinchant,K (2292) ICCF 2011 1-0 (57)}) 8... O-O (8... d6 9. O-O-O (9. Bc4 O-O 10. O-O h6 11. Bf4 Nd7 12. Rad1 Bf6 13. Qd2 a5 14. Rfe1 Qe7 15. Bg3 h5 16. f4 Nc5 17. e5 dxe5 18. fxe5 Bg5 19. Bf4 Bxf4 20. Qxf4 Bg4 {Keast,D (2271)-García Gil,J (2281) ICCF 2008 1/2 (35)}) 9... h6 10. Bf4 O-O 11. e5 dxe5 12. Bxe5 Qxd4 13. Bxd4 Ng4 14. Na4 Re8 15. h3 Nf6 16. g4 Be6 17. Bxf6 Bxf6 18. Bg2 Red8 19. Bxc6 Bg5+ 20. Kb1 {Binder,E (2131)-Latas,P (2106) ICCF 2013 1/2 (31)}) 9. Bd3 ( 9. e5 Nd5 10. Bxe7 Qxe7 11. Nxd5 (11. O-O-O Re8 12. Nxd5 cxd5 13. Qxd5 Qg5+ 14. Kb1 c6 15. h4 Qxe5 16. Qxe5 Rxe5 17. c4 d6 18. Kc1 d5 19. cxd5 cxd5 20. Bd3 d4 21. Rhe1 Rc5+ 22. Kb1 Be6 {Baranyuk,A (2226)-Grifoll Miró,J (2195) ICCF 2010 1/ 2 (53)}) 11... cxd5 12. O-O-O Bb7 13. f4 c5 14. Qd2 Rab8 15. c4 d4 16. Bd3 d5 17. Qc2 dxc4 18. Bxc4 Bc8 19. Kb1 Rb4 20. Rd2 g6 {Nielsen,J (2039)-Cvak,R (2080) ICCF 2010 0-1 (33)}) 9... h6 (9... d5 10. exd5 h6 11. Bf4 cxd5 12. O-O c5 13. Qe5 Re8 14. Rae1 (14. Qe1 c4 15. Be2 d4 16. Nb5 Bb7 17. Nc7 Nd5 18. Nxd5 Bxd5 19. Qd1 Qb6 20. Bg4 Rad8 21. f3 d3+ 22. Kh1 Bf6 {0-1 (22) De Smet,K (2260) -Boreux,P (2343) ICCF 2005}) 14... c4 15. Be2 Bc5 16. Qc7 Qxc7 17. Bxc7 d4 18. Na4 Bb4 19. c3 Bd7 20. cxb4 Bxa4 21. Bf3 {Baumann,W (1989)-Schneider,H (2235) ICCF 2009 0-1 (30)}) 10. Bf4 (10. Bh4 d5 11. O-O (11. e5 Ng4 12. Bxe7 Qxe7 13. f4 f6 14. O-O fxe5 15. fxe5 Rxf1+ 16. Rxf1 Qxe5 17. Qxe5 Nxe5 18. Re1 Nxd3 19. cxd3 Bf5 20. d4 Rb8 21. b3 Kf7 22. Na4 Rb4 {Figiel,R-Domaraczenko,K (1870) ICCF 2014 1/2 (30)}) 11... dxe4 12. Qxd8 Bxd8 13. Nxe4 g5 14. Bg3 Nxe4 15. Bxe4 Rb8 {1/2 (15) Franzén,T (2336)-Siikaluoma,A (2522) ICCF 2009}) (10. Bd2 d5 11. e5 Nd7 12. O-O Bc5 13. Qf4 f6 14. Qf5 Nxe5 15. Qh7+ Kf7 16. Be2 Bg4 17. Bxh6 Rg8 18. Bxg4 Nxg4 19. Bf4 Rh8 20. Qf5 Qc8 21. Qd3 Qe6 {Nielsen,J (1959) -McDermott,F ICCF 2015 0-1 (41)}) 10... d5 11. O-O (11. Qa4 Bd6 12. e5 Re8 13. O-O Bxe5 14. Bxe5 Rxe5 15. Qxc6 Rb8 16. Rae1 Qe7 17. Rxe5 Qxe5 18. b3 Ng4 19. g3 d4 20. Nb5 Nxh2 21. Rc1 Bb7 22. Qxc7 Nf3+ {Berger,M (2244)-Olano Aizpurua,J (1893) ICCF 2010 1/2}) (11. e5 c5 12. Qa4 Nh5 13. Bd2 d4 14. Ne4 a5 15. Nxc5 Qd5 16. Ne4 Be6 17. O-O Rfb8 18. b3 Qxe5 19. Rfe1 Bb4 20. a3 Bxd2 21. Nxd2 Qd6 22. Nc4 Bxc4 {Glowatzky,T (2275)-Secer,A ICCF 2006 1/2 (41)}) 11... dxe4 12. Qxd8 Rxd8 13. Nxe4 Nd5 14. Be5 Nb4 15. Rfd1 Nxd3 16. cxd3 (16. Rxd3 Rxd3 17. cxd3 Ba6 18. d4 Rd8 19. Nc5 Bxc5 {1/2 (19) Ekebjærg,O (2589)-Õim,T (2562) ICCF 1994}) 16... Be6 17. f3 {Larsson,M (2295)-Potrata,J (2297) ICCF 2013 1/2 (34)}) (5... Bc5 6. e3 Nxd4 (6... O-O 7. Be2 (7. Bd3 Nxd4 8. exd4 Re8+ 9. Be3 Bb6 10. O-O d5 11. h3 c6 12. Qf3 Qe7 13. Rfe1 Bc7 14. Bd2 Qd6 15. Rxe8+ Nxe8 16. Re1 Nf6 17. Bg5 Qh2+ 18. Kf1 Be6 {Wyder,B (2010)-Lipsits,S (1805) ICCF 2009 1-0 (53)}) 7... Nxd4 (7... h6 8. Bh4 Nxd4 9. exd4 Bb4 10. O-O c6 11. a3 Bxc3 12. bxc3 Re8 13. Bd3 d5 14. f3 g5 15. Bg3 Nh5 16. Be5 Qe7 17. f4 Nxf4 18. h4 c5 19. hxg5 {Matheis,T (2292)-MacGregor,C (1941) ICCF 2007 1-0}) 8. exd4 Be7 9. O-O d5 10. Re1 Re8 11. Bd3 c6 12. Qd2 Be6 13. h3 a6 14. Re2 h6 15. Bh4 Qc7 16. Rae1 b5 17. Bg3 Bd6 18. Bxd6 {Wyder,B (1909)-Bugmann,W ICCF 2007 1-0}) (6... Bxd4 7. exd4 O-O 8. d5 Ne7 9. Bxf6 gxf6 10. d6 cxd6 11. Qg4+ Ng6 {0-1 (11) Neelmeier,W (1882)-Burridge,R (2048) ICCF 2014}) (6... Be7 7. Nf5 Bf8 8. Nd5 d6 9. Bxf6 gxf6 10. Ng3 Be7 11. Bb5 a6 12. Be2 Be6 13. c4 Qd7 14. O-O Rg8 15. e4 O-O-O 16. b4 Kb8 17. Rb1 Ne5 18. f4 {Kokorin,V (2205)-Kusnierz,J (1985) ICCF 2018 1-0 (29)}) 7. exd4 Be7 8. Qf3 (8. Bd3 d5 9. O-O (9. Qd2 O-O 10. O-O-O Re8 11. h4 c6 12. f3 a5 13. g4 b5 14. Ne2 a4 15. Kb1 a3 16. b3 Nd7 17. Ng3 Nf8 18. Nh5 g6 19. Rhe1 Be6 20. Bh6 Bxh4 {Kokorin,V (2175)-Stepán,J (2045) ICCF 2018 1-0 (32)}) 9... O-O 10. Re1 (10. Qd2 c6 11. Rae1 Be6 12. h3 Re8 13. Bf4 Nh5 14. Bh2 g6 15. Ne2 Bg5 16. Qb4 Qb6 17. Qxb6 axb6 18. a3 Ng7 19. c3 {1/2 (19) Fuhr,M (2217) -Malkov,A (2211) ICCF 2014}) 10... c6 11. a3 (11. Qd2 Re8 12. Re3 h6 13. Bh4 Be6 14. Rae1 Ng4 15. Bxe7 Rxe7 16. Rg3 Qd6 17. h3 Nf6 18. Re5 Kf8 19. Rf3 Bd7 20. Rxe7 Qxe7 21. Ne2 Re8 22. Qa5 a6 {Larsson,M (2295)-Bares,J (2277) ICCF 2013 1/2 (44)}) 11... Be6 12. Ne2 h6 13. Bf4 Re8 14. c3 Bd6 15. f3 Qc7 16. Qd2 Bd7 17. Bxd6 Qxd6 18. Bc2 Re7 19. Nf4 Rae8 {Ryan,P (2188)-Edwards,K (2207) ICCF 2015 1/2 (26)}) 8... c6 9. Bd3 d5 10. h3 O-O 11. O-O-O (11. O-O h6 12. Bf4 Bd6 13. a3 Bxf4 14. Qxf4 Nh5 15. Qe5 g6 16. Qe3 Qh4 17. Qxh6 Qxd4 18. Ne2 Qg7 19. Qe3 Bd7 20. Nf4 Rae8 21. Nxh5 gxh5 22. Qf3 Re5 {Dreisch,J (2031)-Ooka,K (1701) ICCF 2017 1/2}) 11... Re8 12. g4 b5 13. Kb1 b4 14. Na4 Ne4 15. Bxe7 Rxe7 16. Bxe4 dxe4 17. Qf4 {De Smet,K (2260)-Rain,R (2371) ICCF 2005 1-0 (55)}) ( 5... Be7 6. Nf5 h6 (6... O-O 7. Nxe7+ Qxe7 8. Nd5 Qe5 9. Bxf6 gxf6 10. c3 Ne7 11. Nxe7+ Qxe7 12. e3 d6 13. Bd3 Qe5 14. Qc2 f5 15. O-O-O Bd7 16. Rhe1 a5 17. f4 Qf6 18. Qf2 {Keast,D (2195)-Monteiro,A (1902) ICCF 2017 1/2}) 7. Nxg7+ Kf8 8. Bxf6 Bxf6 9. Nh5 Bxc3+ 10. bxc3 Qg5 11. Ng3 d6 12. e3 Bg4 13. Qd2 Qa5 14. Bd3 Re8 15. O-O h5 16. Rfb1 {1-0 (16) Lloyd,G (2258)-Blyth,S ICCF 2007}) 6. Bxf6 Qxf6 7. Ndb5 Qe5 8. Nd5 Kd8 9. Nbxc7 Rb8 10. Nb5 Qxb2 11. Rb1 Qxa2 12. e3 a6 13. Nbc3 {Brodda,W (2481)-Deidun,J (2274) ICCF 2006 1-0 (53)} Qa3 14. Be2 b5 15. O-O Qd6 16. Qd3 Qg6 17. Ne4 h5 18. f4 f5 19. Ng5 Bc5 20. Bf3 d6 21. Kh1 Bd7 22. e4 Rf8 23. c4 b4 24. Qd1 Rh8 25. exf5 {Wieringen,C (2292)-Zehr,L (1991) ICCF 2008 1-0 (30)}) (1... c5 2. d4 (2. Nf3 Nc6 (2... d5 3. e4 (3. e3 Nf6 4. Ne5 e6 5. e4 d4 6. Bb5+ Nbd7 7. Na4 a6 8. Bc6 bxc6 9. Nxc6 Qc7 10. Nxc5 Bxc5 11. e5 Qxc6 12. exf6 Qxg2 13. Ke2 d3+ 14. cxd3 Qxf2# {Priore,L-Fabri,L (2374) ICCF 2019 0-1}) 3... d4 4. Bb5+ (4. Ne2 Nf6 (4... Nc6 5. h3 e6 6. Ng3 (6. d3 Bd6 7. g3 e5 8. Bg2 Nge7 9. O-O f6 10. Bd2 Be6 11. Nh2 O-O 12. f4 exf4 13. Bxf4 Ne5 14. Nf3 N7g6 15. c3 Nxf3+ 16. Rxf3 Be7 17. Qd2 Qd7 {Pimenta,D (1724)-Khan, S (2075) ICCF 2016 0-1 (36)}) 6... Bd6 7. Bb5 Nge7 8. O-O O-O 9. d3 a6 10. Bxc6 Nxc6 11. Ne2 f6 12. Bd2 Rf7 13. a3 e5 14. Ng3 Be6 15. Qe2 Qd7 16. Nh4 {Fuhr,M (2217)-Kireev,V (2236) ICCF 2014 1/2 (48)}) 5. Ng3 h5 6. Bb5+ (6. e5 h4 7. exf6 hxg3 8. fxg3 exf6 9. Bb5+ Bd7 10. Qe2+ Qe7 11. Bxd7+ Kxd7 12. Qxe7+ Bxe7 13. d3 Nc6 14. Bd2 Bd6 15. Kf2 Rae8 16. Rae1 Re6 17. b3 b5 {Berger,M (2244)-Kloster,J ICCF 2010 0-1 (49)}) 6... Nc6 7. Bxc6+ bxc6 8. h4 Bg4 9. d3 Nd7 10. Ne2 Bxf3 11. gxf3 e6 12. f4 Be7 13. c3 dxc3 14. Nxc3 Rb8 15. Qa4 O-O {Palmiero,O (2055) -Løvholt,T (2225) ICCF 2005 1/2 (25)}) 4... Bd7 (4... Nc6 5. Na4 Nf6 6. e5 Nd7 7. e6 fxe6 8. Bxc6 bxc6 9. O-O e5 10. d3 e6 11. Qe2 Bd6 12. Ng5 Nf6 13. f4 exf4 14. Bxf4 Bxf4 15. Rxf4 Nd5 16. Rg4 {Zanolin,H (2126)-Krzyzanowski,A (2298) ICCF 2010 1/2 (39)}) 5. Bxd7+ Qxd7 6. Ne2 Nc6 7. d3 e5 (7... e6 8. O-O g6 (8... h6 9. a4 O-O-O 10. a5 g5 11. Nd2 f5 12. Nc4 f4 13. a6 b6 14. c3 dxc3 15. Nxc3 Bg7 16. Nb5 Kb8 17. Bd2 Nge7 18. Bc3 Rhg8 19. Qb3 Nc8 20. e5 {Ballow,J (2376) -Parsons,L (2364) ICCF 2014 1/2 (40)}) 9. Bg5 Bg7 10. a3 Nge7 11. Rb1 a5 12. c3 h6 13. Bxe7 Nxe7 14. cxd4 cxd4 15. Qd2 O-O 16. Rfc1 e5 17. Rc4 Qb5 18. Qd1 Rfc8 19. Nd2 {Mailfert,J (2342)-Fister,B (2306) ICCF 2010 1/2}) 8. O-O Bd6 9. Ng3 ( 9. c3 Nge7 10. cxd4 cxd4 11. Ng3 h5 12. Nh4 g6 13. Bg5 Qe6 14. f4 exf4 15. Ne2 f6 16. Bxf4 O-O-O 17. Nf3 g5 18. Bxd6 Qxd6 19. a4 h4 20. a5 h3 {Vajas,S (1943) -Webbink,A (2091) ICCF 2018 0-1 (52)}) 9... Nge7 10. h4 f6 11. Bd2 O-O-O (11... g6 12. Bh6 Ng8 13. Bd2 h5 14. c3 Nge7 15. Ne2 O-O-O 16. cxd4 cxd4 17. Qa4 Kb8 18. Rac1 g5 19. hxg5 Rdf8 20. b4 h4 21. b5 h3 22. bxc6 Qg4 23. Ng3 {Zahour,J (2333)-Pecka,J (2407) ICCF 2013 1/2 (30)}) 12. a3 Kb8 13. Qb1 a6 14. Rd1 { Muljadi,P (2132)-Saint Arnaud,P (2190) ICCF 2016 1-0 (32)}) (2... e6 3. d4 (3. e3 d5 4. Bb5+ Bd7 5. d4 Nf6 6. Qe2 Qc7 7. Ne5 Be7 8. a4 Nc6 9. f4 Rd8 10. g4 a6 11. g5 Nxe5 12. gxf6 Bxf6 13. dxe5 Bh4+ 14. Kd2 axb5 {Ridout,P-Johnston,P (1738) ICCF 2017 0-1 (34)}) 3... cxd4 4. Nxd4 a6 (4... Bb4 5. Ndb5 Bxc3+ 6. bxc3 d5 7. Bf4 Na6 8. e4 Nf6 9. Nd6+ Kf8 10. Bxa6 bxa6 11. O-O dxe4 12. Nxe4 Qxd1 13. Rfxd1 Bb7 14. Nxf6 gxf6 15. Rd7 Be4 16. Be3 {Lugli,A-Adabbo,G ICCF 2011 1-0 (46)}) 5. g3 Nf6 (5... d5 6. Bg2 f5 7. O-O Nf6 8. Bg5 Be7 9. Qd3 Nc6 10. Nxc6 bxc6 11. Na4 O-O 12. c4 Ne4 13. Bxe7 Qxe7 14. f3 Nf6 15. Rac1 Rb8 16. b3 Bd7 17. Qe3 {Welti,M (1884)-Singeisen,H (2058) ICCF 2007 1/2 (37)}) 6. Bg2 Nc6 (6... Be7 7. e4 Qc7 8. Qe2 d6 9. Be3 O-O 10. O-O-O Nc6 11. f4 Nxd4 12. Rxd4 e5 13. Rc4 Qa5 14. Kb1 {1-0 (14) Foster,K (2317)-Burrows,N ICCF 2012}) 7. O-O Be7 8. Bf4 Qb6 9. Nxc6 dxc6 10. Bd6 c5 11. Bxe7 Kxe7 12. Qc1 Bd7 13. Rd1 Rhd8 14. e4 {Glanville,C (2085)-Toothill,A (2049) ICCF 2013 1/2 (27)}) (2... g6 3. d4 cxd4 4. Qxd4 Nf6 5. Qh4 (5. Bf4 d6 6. Rd1 Nc6 7. Qd2 Bg7 8. e4 O-O 9. Bc4 Bg4 10. O-O Qb6 11. Be3 Qxb2 12. Rb1 Qa3 13. Rb3 Qa5 14. Rxb7 Bxf3 15. gxf3 Nd7 16. Nd5 Qxd2 {Drost,R (1904)-Kietzmann,S ICCF 2015 0-1}) 5... Nc6 (5... d5 6. Bh6 Nc6 7. O-O-O Qa5 8. a3 Be6 9. e3 Bxh6 10. Qxh6 Ng4 11. Qh4 Nf6 12. Nd4 a6 13. f3 Rc8 14. Qe1 O-O 15. g4 Nxd4 16. exd4 b5 17. Bd3 {Kokorin,V (2271) -Meißner,R (2255) ICCF 2020 1-0 (27)}) 6. Bh6 Qa5 7. Bd2 Bg7 8. e4 h6 9. Nb5 Qb6 10. e5 Nh7 11. O-O-O Ng5 12. Be3 Nxf3 13. gxf3 Qa5 14. Bd2 {Marcos Nozar,J (2182)-Fernández,J (2360) ICCF 2016 0-1 (65)}) (2... a6 3. g3 d5 (3... Nf6 4. Bg2 g6 5. O-O Bg7 6. d4 cxd4 7. Nxd4 O-O 8. a4 Nc6 9. Bg5 h6 10. Bxf6 Bxf6 11. e3 Bg7 12. Rb1 Rb8 13. Re1 Ne5 14. Nd5 e6 15. Nf4 {Henri,J (2329)-Kilgour,D (2394) ICCF 2009 1-0 (67)}) 4. Bg2 e6 5. O-O Nf6 6. d4 h6 7. Be3 cxd4 8. Bxd4 Nc6 9. Bxf6 gxf6 10. e4 dxe4 11. Nxe4 f5 {1/2 (11) Fuhr,M (2232)-Hoffmann,F (2311) ICCF 2014}) (2... Nf6 3. g3 (3. b3 d6 (3... g6 4. Bb2 Bg7 5. Nb5 a6 6. Na3 d5 7. c4 d4 8. Qc2 Nc6 9. O-O-O Nb4 10. Qb1 Ne4 11. Qxe4 Bf5 12. Qxf5 gxf5 13. e3 O-O 14. exd4 b6 15. dxc5 {Vaessen,J (1516)-Cortez,J (1582) ICCF 2018 0-1 (25)}) 4. e3 Nc6 5. Bb2 e5 6. d4 cxd4 7. exd4 e4 8. d5 exf3 9. dxc6 Qe7+ 10. Kd2 g6 11. Bb5 Bh6+ 12. Kd3 Bf5+ 13. Kc4 O-O 14. Re1 Qc7 {Webster,O-Verma, K ICCF 2012 0-1}) (3. d3 e6 4. Bg5 Be7 5. e4 d6 6. Be2 Nbd7 7. Qd2 a6 {0-1 (7) Bautista,E (1512)-Davis,J (1603) ICCF 2014}) 3... Nc6 (3... d5 4. d4 Nc6 (4... cxd4 5. Nxd4 e5 6. Nf3 Nc6 7. Bg2 Be7 8. e3 Be6 9. O-O O-O 10. Ne2 Rc8 11. c3 Qb6 12. b3 Rfd8 13. Bb2 a5 14. Rc1 Ne4 15. Qc2 a4 16. Rb1 {Tago,S (1676)-Belka, W (2401) ICCF 2010 0-1}) 5. Bg2 Bf5 6. a3 e6 7. O-O h6 8. Bf4 Qb6 9. Na4 Qb5 10. Nxc5 Bxc5 11. dxc5 Qxc5 12. c3 O-O 13. Be3 Qb5 14. Nd4 Nxd4 15. Bxd4 { Fuhr,M (2249)-Balosetti,D (1936) ICCF 2012 1-0 (70)}) 4. Bg2 d5 5. O-O d4 6. Na4 e5 7. c4 Bd6 8. d3 O-O 9. a3 Bd7 10. b3 Qe7 11. e4 Rab8 12. Bd2 b5 13. Nb2 a6 14. Qc2 {Wieringen,C (2301)-Silva,J ICCF 2005 1/2}) (2... d6 3. g3 (3. h3 Nf6 4. g4 g6 5. Bg2 Bg7 6. d3 Nc6 7. Ng5 d5 8. O-O h5 9. gxh5 Rxh5 10. b3 Nh7 11. Nxd5 Nxg5 12. Bxg5 Rxg5 13. Qd2 Rxd5 14. Bxd5 Qxd5 {Vaessen,J (1744) -Weggen,R (1721) ICCF 2017 0-1}) 3... e5 4. Bg2 Be7 5. d3 Nc6 6. Nd5 Nf6 7. c4 O-O 8. O-O Nxd5 9. cxd5 Nd4 10. e3 Nxf3+ 11. Bxf3 Bh3 12. Re1 f5 13. Bd2 Qd7 14. Rc1 {Ormsby,A (2074)-Ellis,L (2315) ICCF 2012 1/2 (86)}) 3. d4 (3. g3 g6 4. b3 (4. Bg2 Bg7 5. O-O d6 6. e3 Nf6 7. d4 cxd4 (7... Qb6 8. d5 Na5 9. e4 Bg4 10. h3 Bxf3 11. Qxf3 a6 12. b3 O-O 13. Bg5 Qc7 14. Qe3 Rfe8 15. Ne2 b5 16. c3 Nb7 17. Qd2 a5 18. Rab1 {1/2 (18) Fuhr,M (2249)-Kleiser,G (2311) ICCF 2012}) 8. exd4 O-O 9. Re1 Bd7 10. Bg5 Rc8 11. Qd2 Re8 12. h3 Na5 13. b3 Nc6 14. a3 h6 15. Bxh6 Bxh6 {Fuhr,M (2149)-Marx,P (1927) ICCF 2017 1-0 (44)}) 4... Bg7 5. Na4 Bxa1 6. Nb2 e5 7. Nc4 d5 8. Nb2 e4 9. Nh4 Qa5 10. a4 Nf6 11. c3 Be6 12. e3 O-O 13. h3 Rad8 14. Bb5 d4 {Rallmann,R-Mitkov,N ICCF 2008 0-1}) (3. e3 b6 (3... Nf6 4. Bc4 d5 5. Bxd5 Nxd5 6. Ne4 Bg4 7. O-O Ne5 8. Neg5 h6 9. Ne4 Nxf3+ 10. gxf3 Bh3 11. Nxc5 e5 12. Nxb7 Qg5+ {0-1 (12) Monreal,E (1402)-Garcia Rosas,E ICCF 2020}) 4. d4 e6 5. d5 exd5 6. Nxd5 Nf6 7. Bc4 Be7 8. Nxe7 Qxe7 9. O-O O-O 10. Bd2 Bb7 11. Bc3 Ne4 12. Qd3 Rfe8 13. Rad1 d6 14. Nd2 Nxc3 {Berger,B-Strelecky, R ICCF 2015 0-1}) 3... cxd4 (3... d5 4. Bf4 (4. dxc5 d4 (4... Nf6 5. a3 (5. Bg5 d4 6. Na4 Qa5+ 7. c3 b5 8. b4 Qxa4 9. Qxa4 bxa4 10. b5 Ne4 11. bxc6 f6 12. cxd4 Nxg5 13. Nxg5 fxg5 14. Rb1 Bf5 15. Rb7 Be4 16. e3 Bxc6 {O'Neill-MCAleenan,C (1956)-Brunner,R (2099) ICCF 2011 0-1 (25)}) 5... d4 6. Na2 e5 7. Nb4 Bxc5 8. Nxc6 bxc6 9. Nxe5 O-O 10. Nd3 Bb6 11. g3 Qd5 12. Rg1 Re8 13. Bg2 Ne4 14. Nf4 Qc5 15. Bxe4 Rxe4 16. b4 {Kokorin,V (2183)-Stanishevski,A (2066) ICCF 2015 1/2 (69)}) 5. Na4 (5. Ne4 Qd5 6. Ng3 e5 7. e3 Nf6 8. exd4 exd4 9. Bd3 Bxc5 10. O-O O-O 11. Bg5 Be7 12. c4 Qd8 13. Re1 h6 14. Bh4 Re8 15. h3 Be6 16. a3 a5 { Ackermann,B-Blair,D (2027) ICCF 2017 0-1 (50)}) 5... Qa5+ 6. c3 dxc3 7. Nxc3 e5 8. e3 Qxc5 9. Ng5 Nh6 10. Nge4 Qb6 11. Bc4 Bf5 12. O-O Be7 13. Nd5 Qd8 14. Ng3 O-O 15. e4 Bg4 {Henri,J (2397)-Vestergård,S (2283) ICCF 2008 1/2 (69)}) (4. e3 Nf6 5. Bb5 Bg4 6. h3 Bxf3 7. Qxf3 e6 8. Bxc6+ bxc6 9. O-O Bd6 10. dxc5 Bxc5 11. b3 Bd6 12. Bb2 O-O 13. Na4 Qe7 14. c4 Ne4 15. Qe2 f5 {Vandermeulen,B (2563) -Fischer,W (2507) ICCF 2012 0-1 (61)}) 4... Bg4 5. Ne5 (5. e3 e6 6. dxc5 (6. Bb5 cxd4 7. Qxd4 Bxf3 8. gxf3 Nge7 9. O-O-O a6 10. Bxc6+ Nxc6 11. Qd3 Qh4 12. Bg3 Qh5 13. e4 d4 14. Ne2 Rd8 15. Kb1 Be7 16. Qb3 Rd7 17. Rd3 O-O {Marcos Nozar,J (2180)-Deforel,J (2192) ICCF 2016 1-0 (53)}) 6... Bxc5 7. h3 Bxf3 8. Qxf3 Nge7 9. O-O-O Ng6 10. Bh2 O-O 11. Kb1 Rc8 12. h4 Nce5 13. Bxe5 Nxe5 14. Qf4 Nd7 15. h5 Be7 16. h6 g5 {Marcos Nozar,J (2182)-Kunzmann,H (2184) ICCF 2016 1/2 (39)}) 5... cxd4 6. Nxc6 bxc6 7. Qxd4 Qb6 (7... f6 8. O-O-O Bd7 9. Bd2 e5 10. Qd3 e4 11. Qg3 Ne7 12. f3 Nf5 13. Qf2 Qb6 14. Qxb6 axb6 15. fxe4 dxe4 16. g4 e3 17. Be1 Nd6 18. Bg2 b5 19. Rd4 {Mary,P (2195)-Pereira,A ICCF 2005 1/ 2 (64)}) 8. O-O-O Qxd4 9. Rxd4 f6 10. Ra4 Bf5 11. e4 e5 12. exf5 exf4 13. Rxf4 Bd6 14. Ra4 Bc5 15. f3 {Welti,M (1884)-Bonferroni,T ICCF 2007 1-0}) 4. Nxd4 Nf6 (4... e6 5. Bf4 (5. Ndb5 Nf6 6. Bf4 e5 7. Bg5 Be7 8. Nd6+ Kf8 9. Bxf6 gxf6 10. e3 Rg8 11. g3 Qc7 12. Ncb5 Qa5+ 13. c3 Rg7 14. Bg2 Qb6 15. O-O a6 16. Nxc8 Rxc8 {Fremmegaard,J (1990)-Løvås,R (1680) ICCF 2017 1-0 (31)}) 5... a6 (5... d5 6. e3 Bd6 7. Bxd6 Qxd6 8. Bb5 Nge7 9. O-O O-O 10. Nxc6 bxc6 11. Bd3 e5 12. f3 f5 13. f4 e4 14. Be2 Be6 15. h3 Rab8 16. Rb1 a6 17. Bxa6 {Wright,D (1613)-Davis,J (1630) ICCF 2013 1-0}) 6. Nxc6 (6. e3 Qb6 7. Nb3 d5 8. a3 Nf6 9. Be2 Be7 10. O-O O-O 11. Bg3 Bd7 12. Rb1 Rac8 13. Nd4 Rfd8 14. Bd3 Na5 15. Be5 Nc4 16. Bxc4 dxc4 17. Qf3 Rc5 {Speybroeck,D (1995)-Solberg,J ICCF 2005 0-1}) 6... bxc6 7. Bd6 Bxd6 8. Qxd6 Qb6 (8... Qe7 9. Qg3 f5 10. e3 e5 11. f4 exf4 12. Qxf4 Nf6 13. Bd3 g6 14. O-O d5 15. Na4 O-O 16. Rae1 Be6 17. Qd4 Bf7 18. b3 Rfe8 19. Nc5 a5 20. h3 {Nielsen,J (1988)-Nett,P (1927) ICCF 2012 1/2 (40)}) 9. Qg3 Nf6 10. Qxg7 Qxb2 11. Qxf6 Qxa1+ 12. Kd2 Rf8 13. g4 Qb2 14. e3 Qb4 15. Bd3 d5 16. Bxh7 { Lugli,A-Caponi,S ICCF 2012 0-1 (39)}) (4... g6 5. Be3 (5. g3 Bg7 6. Nxc6 bxc6 ( 6... dxc6 7. Qxd8+ Kxd8 8. e4 e5 9. Bc4 Ke7 10. b3 Be6 11. Ba3+ Kf6 12. O-O-O Bf8 13. Bxf8 Rxf8 14. Na4 Bxc4 15. bxc4 Nh6 16. Rd7 Rb8 17. Rhd1 Ng4 18. h3 { Riihimäki,V (1999)-Pihlajamäki,J (1482) ICCF 2019 1-0}) 7. Bg2 Rb8 (7... Nf6 8. e4 Qc7 9. O-O d6 10. Qe2 Nd7 11. Rb1 h5 12. h3 Rb8 13. Be3 Qa5 14. Rfd1 Ne5 15. a3 Ba6 16. Qe1 Nc4 17. b4 Qc7 18. Bc1 Bc8 19. b5 {Marcos Nozar,J (2182) -Rodríguez Landa,M (2433) ICCF 2016 1/2 (64)}) 8. O-O h5 9. h3 d5 10. e4 Nf6 11. Bf4 Rxb2 12. Be5 d4 13. Bxd4 Rb4 14. Ne2 O-O 15. c3 Rc4 16. Qb3 Ba6 { Kokorin,V (2358)-Hamilton,D (2048) ICCF 2010 1/2 (38)}) (5. Bf4 Bg7 (5... Nf6 6. g3 d6 7. Nxc6 bxc6 8. Bg2 Bd7 9. O-O Bg7 10. Qd2 O-O 11. e4 Qa5 12. Bh6 Bxh6 13. Qxh6 Rab8 14. Rab1 Ng4 15. Qh4 f6 16. Bf3 h5 17. Be2 {Keast,D (2271) -Pyrich,G (2243) ICCF 2008 0-1 (33)}) 6. Ndb5 d6 7. Nd5 Rb8 8. c3 a6 9. Nbc7+ Kf8 10. e4 Ne5 11. Bxe5 dxe5 12. Qb3 b5 13. Qb4 Qd6 14. Qxd6 exd6 15. Be2 Nf6 16. Nxf6 Bxf6 {Drost,R (1861)-Pihlajamäki,J (1668) ICCF 2017 1/2 (30)}) (5. Bg5 Qa5 6. Nxc6 bxc6 7. Qd4 Qxg5 8. Qxh8 Nf6 9. e3 d6 10. Ne4 Nxe4 11. Qd4 Bf5 12. h4 Qf6 13. Qxf6 Nxf6 14. c3 Rb8 15. b3 Bg7 16. f3 Nd5 {Strelecky,R-Shepherd,C (2090) ICCF 2013 0-1 (33)}) 5... Nf6 (5... Bg7 6. g3 Nf6 7. Bg2 O-O 8. O-O Ng4 9. Nxc6 Nxe3 10. Nxd8 Nxd1 11. Rfxd1 Rxd8 12. Rd3 Kf8 13. Rad1 {1/2 (13) Lloyd, G (2166)-Slinger,A (2342) ICCF 2008}) 6. Nxc6 bxc6 7. Bd4 Rb8 (7... Bg7 8. Ne4 Qa5+ (8... Rb8 9. Nxf6+ Bxf6 10. Bxf6 exf6 11. b3 O-O 12. Qd2 d5 13. e3 Re8 14. Be2 Qe7 15. O-O Rd8 16. Rad1 Bf5 17. Rfe1 Kg7 18. Bd3 Bg4 19. Rc1 Qa3 20. c4 { Manarin,F (1655)-Sladek,V (2163) ICCF 2008 0-1 (30)}) 9. Bc3 Qf5 10. Nxf6+ { 1-0 (10) Figiel,R-Stich,T (2266) ICCF 2014}) 8. e4 Qa5 9. e5 Rxb2 10. exf6 e5 11. Qe2 d6 12. O-O-O Rb4 13. Be3 Qa3+ 14. Kd2 d5 15. Qd3 Rb2 16. Nxd5 {Henri,J (2329)-Siigur,J (2509) ICCF 2009 0-1}) (4... e5 5. Ndb5 a6 (5... d6 6. Nd5 Rb8 7. Nbc7+ Kd7 8. g3 f5 9. e4 Nge7 10. Bg5 h6 11. Bxe7 Bxe7 12. Bh3 g6 13. exf5 { 1-0 (13) Gaedtke,T-Ciruelos Clerencia,J (1578) ICCF 2018}) (5... Bb4 6. a3 Bxc3+ 7. bxc3 d5 8. Qxd5 Qxd5 9. Nc7+ Kd8 10. Nxd5 Bf5 11. Rb1 b6 12. Ne3 Be6 13. g3 Nge7 14. Bg2 Rc8 15. O-O f6 16. a4 Ke8 17. Ba3 {Haak,G (2208)-Iriarte Gómez,E (2180) ICCF 2011 1/2 (32)}) 6. Nd6+ Bxd6 7. Qxd6 Qe7 8. Qd1 Nf6 9. Bg5 d6 10. Nd5 Qd8 11. c3 Be6 12. Bxf6 gxf6 13. g3 f5 14. Bg2 O-O 15. Qd2 Kh8 16. O-O {Kokorin,V (2152)-Burrows,G (1896) ICCF 2014 1-0 (45)}) (4... d6 5. g3 e5 ( 5... g6 6. Bg2 Bd7 7. Nd5 Bg7 8. Nb5 Rc8 9. c3 a6 10. Be3 Qa5 11. Nbc7+ Rxc7 12. Bb6 Qxb6 13. Nxb6 Nf6 14. Nxd7 Nxd7 15. h4 h5 16. O-O Nf6 17. Qb3 {Henri,J (2404)-Theron,P ICCF 2008 1-0 (28)}) 6. Nb3 f5 7. Bg2 Be7 8. O-O Nf6 9. Bg5 O-O 10. Qd2 Be6 11. Rad1 Kh8 12. Bxf6 Rxf6 13. Nd5 Rf7 14. Nxe7 Rxe7 15. e3 Rd7 16. Bd5 {Nagel,H (2140)-Rudenko,A (2262) ICCF 2013 1/2 (25)}) 5. Bg5 (5. g3 g6 ( 5... d5 6. Bg2 e5 7. Nb3 d4 8. Nb1 (8. Ne4 Nxe4 9. Bxe4 Bh3 10. e3 Qd7 11. exd4 O-O-O 12. d5 f5 13. Bf3 e4 14. Be2 Qxd5 15. Qxd5 Rxd5 16. Bc4 Rd8 17. Bf4 Bd6 18. Bg5 Be7 19. Bf4 Bb4+ {Martindale,D (2149)-Cairney,J (2083) ICCF 2011 1-0 (48)}) 8... Be7 9. c3 a5 10. O-O O-O 11. cxd4 a4 12. dxe5 axb3 13. exf6 Rxa2 14. fxe7 Qxe7 15. Bg5 Qxg5 16. Rxa2 bxa2 17. Nc3 {Fuhr,M (2136)-Magallanes,F (2168) ICCF 2007 0-1 (43)}) (5... e5 6. Nb3 d5 7. Bg5 d4 8. Ne4 Be7 9. Bg2 Nxe4 10. Bxe7 Nxe7 11. Bxe4 O-O 12. O-O f5 13. Bg2 f4 14. c3 dxc3 15. Qxd8 Rxd8 16. bxc3 g5 17. Rad1 {Wright,D (1613)-Acosta,E (1630) ICCF 2013 1-0 (59)}) 6. Bg2 Bg7 7. O-O O-O 8. Bg5 h6 9. Bxf6 Bxf6 10. e3 e6 11. Ne4 Bg7 12. c3 (12. Nxc6 bxc6 13. Qd6 f5 14. Nc3 Qa5 15. a3 Be5 16. Qb4 Qa6 17. Qc5 d5 18. Rab1 Rb8 19. Rfd1 Qb6 20. Qxb6 axb6 21. Ne2 c5 22. Nf4 Kf7 23. Nd3 Bd6 {Henri,J (2334)-Peli, G (2381) ICCF 2009 1/2 (27)}) 12... d5 13. Nc5 Qb6 14. Na4 Qc7 15. Nc5 Ne7 16. Nd3 e5 {Taksrud,V (2066)-Wærstad,L (2091) ICCF 2013 0-1 (43)} 17. Nb5 Qc6 18. Qb3 a6 19. Na3 Be6 20. Nc2 Rfd8 21. a4 Rac8 22. a5 Qc7 23. Rfd1 h5 24. Qa3 h4 25. Ndb4 Bf6 26. Rd2 Kg7 27. Rad1 hxg3 28. hxg3 Bg4 {Taksrud,V (2066) -Bekkesletten,C (2379) ICCF 2013 0-1 (31)}) 5... d5 (5... e6 6. Qd2 (6. Qd3 Be7 7. e3 (7. e4 O-O 8. Be2 d5 9. O-O-O dxe4 10. Nxe4 Nxe4 {0-1 (10) Van Beurden,B (1750)-Scherer,R ICCF 2006}) 7... a6 8. Be2 d5 9. O-O O-O 10. Rfd1 h6 11. Bf4 Nd7 12. Bg3 Nc5 13. Qd2 f5 14. Nxc6 bxc6 15. b4 Nb7 16. Rab1 Nd6 17. f3 Re8 { Glanville,C (2106)-Kolarík,J (2182) ICCF 2013 1/2 (39)}) (6. Nxc6 bxc6 7. Qd4 h6 8. Bh4 Rb8 9. O-O-O Rb4 10. Bxf6 Rxd4 11. Bxd8 Rxd1+ 12. Kxd1 Kxd8 13. e4 Bc5 14. Bd3 Bxf2 15. Rf1 Bd4 16. Rxf7 Bf6 17. Rxf6 gxf6 {Manarin,F (1655) -Martinez Martinez,A ICCF 2006 0-1}) (6. e3 Bb4 (6... Be7 7. Be2 Qa5 8. Bh4 Ne4 9. Bxe7 Nxc3 10. Nxc6 dxc6 11. Qd6 Nd5+ 12. b4 Qb6 13. Bh4 Qxb4+ 14. Qxb4 Nxb4 15. O-O-O f6 16. e4 Nxa2+ 17. Kb2 Nb4 18. c3 {Lewyk,I (2180)-Pattrick,G (2242) ICCF 2014 0-1 (52)}) 7. Ndb5 d5 8. a3 Be7 9. Be2 O-O 10. O-O a6 11. Nd4 Qc7 12. Bf3 Bd7 13. Qd2 Bd6 14. Bxf6 gxf6 15. Nxc6 Bxc6 16. Kh1 Be5 17. Rab1 Kh8 { Darias Mateos,A-Arzt,A ICCF 2006 1/2 (42)}) 6... Be7 (6... Bb4 7. a3 Ba5 8. Nb3 Bb6 9. e4 O-O 10. Be2 h6 11. Be3 d5 12. exd5 exd5 13. Bxb6 Qxb6 14. O-O Re8 15. Rfe1 Be6 16. Bf3 Rad8 17. Qf4 d4 18. Na4 {Glanville,C (2042)-Lindop,A (2016) ICCF 2014 1/2 (48)}) 7. O-O-O d5 (7... h6 8. Bh4 Qb6 9. f3 a6 10. Bf2 Nxd4 11. Bxd4 Qc7 12. e4 e5 13. Bf2 b5 14. Kb1 Bb7 15. Nd5 Nxd5 16. exd5 Rc8 17. c3 Bc5 18. d6 Qb6 19. Bg3 {Vandermeulen,B (2563)-Pirs,M (2539) ICCF 2012 0-1 (52)}) 8. e4 Nxe4 9. Nxe4 dxe4 10. Bxe7 Qxe7 11. Nxc6 bxc6 12. Qe3 Bb7 13. Qxe4 O-O 14. Bd3 g6 15. Qe3 c5 16. f3 Rfd8 17. h4 {Henri,J (2386)-Horchler,P (2207) ICCF 2009 1/2 (32)}) (5... Qa5 6. Bxf6 gxf6 7. Nb3 (7. e3 e6 8. Nb3 Qc7 9. Nb5 Qe5 10. Be2 Rg8 11. f4 Qxe3 12. Nc7+ Kd8 13. Nxa8 Rxg2 14. Qd3 Qf2+ 15. Kd1 Qxf4 16. Qf3 Qd6+ 17. Kc1 Rg6 18. Qf2 Qb8 {Baumann,W (2109)-Almarza Mato,C (2173) ICCF 2009 1/2 (39)}) 7... Qg5 8. e3 e6 9. f4 Qg6 10. Nb5 Kd8 11. Qd2 Rg8 12. O-O-O d5 13. Na5 Nxa5 14. Qxa5+ b6 15. Qc3 Bd7 16. Qc7+ Ke8 17. Qb7 {Manarin,F (1655)-Edwards,K (2246) ICCF 2008 1-0 (29)}) (5... Qb6 6. Nb3 e6 7. Bxf6 gxf6 8. e4 a6 9. Qd2 Qc7 10. O-O-O b5 11. Kb1 Bb7 12. f4 O-O-O 13. a3 Kb8 14. Be2 Na5 15. Nxa5 Qxa5 16. Qd4 Rg8 17. g3 {Kokorin,V (2223)-Ponomarev,N (2290) ICCF 2018 1/2 (47)}) (5... h6 6. Bxf6 gxf6 7. e4 h5 8. Be2 h4 9. Qd3 d6 10. O-O-O Bd7 11. Kb1 Qb6 12. Ndb5 O-O-O 13. f4 Kb8 14. g4 a6 15. Na3 Qf2 16. Rhf1 Qc5 17. Nc4 {Blake,M (1999)-Portych,V (2081) ICCF 2006 1-0 (63)}) 6. Bxf6 (6. e4 dxe4 7. Nxc6 Qxd1+ 8. Rxd1 bxc6 9. Bc4 Bf5 10. O-O Rb8 11. Bb3 e6 12. Rd4 Be7 13. Ra4 Rb7 14. Be3 O-O 15. Rxa7 Rxa7 16. Bxa7 Ra8 17. Bd4 Nd5 {Henri,J (2338) -Celen,F ICCF 2006 1/2 (34)}) 6... gxf6 7. e4 dxe4 8. Nxc6 bxc6 9. Qxd8+ Kxd8 10. O-O-O+ (10. Nxe4 Rg8 11. f4 Kc7 12. g3 Be6 13. Bd3 (13. Kf2 Rd8 14. Bd3 Bd5 15. f5 h5 16. Rae1 h4 17. b3 a5 18. gxh4 Rg4 19. c4 Bxe4 20. Rxe4 Rxe4 21. Bxe4 Rd2+ 22. Kg3 Rxa2 23. Rf1 Re2 24. h5 Rxe4 {Lloyd,G (2258)-Mackintosh,I (2450) ICCF 2007 0-1 (30)}) 13... f5 14. Nd2 Bd5 15. Rf1 e6 16. Nf3 h5 17. c4 Bxf3 18. Rxf3 Bb4+ 19. Kf1 h4 20. Rd1 Rh8 21. Be2 Bc5 {Henri,J (2337)-Chan,T ICCF 2007 1/2 (41)}) 10... Kc7 11. Nxe4 Rg8 12. g3 Be6 (12... Bg4 13. Rd3 Be6 14. Bg2 Bh6+ 15. Kb1 Rgd8 16. Re1 Rxd3 17. cxd3 Bd5 18. Bh3 Rb8 19. f4 Bg7 20. b3 e6 21. f5 e5 22. Kc2 Rb4 23. Kc3 a5 24. Re2 {Wærstad,L (2024)-Yaramis,H ICCF 2007 1/2 (25)}) 13. Bd3 Bg4 {Lloyd,G (2258)-Calder,H (2037) ICCF 2007 1/2 (37)}) (2. f4 Nc6 (2... d5 3. e3 (3. g3 Bf5 (3... Nf6 4. Bg2 Nc6 5. Nf3 d4 6. Na4 b6 7. b4 cxb4 8. c3 dxc3 9. Ne5 Bb7 10. Qb3 Nxe5 11. Bxb7 Ned7 12. Qxb4 cxd2+ 13. Qxd2 Rb8 14. Bf3 b5 15. Nc3 {Anda,H (2171)-Larsson,M (2396) ICCF 2005 0-1 (62)}) 4. Bg2 Nf6 5. d3 Nc6 6. Nf3 e6 7. O-O c4 8. Ne5 cxd3 9. cxd3 Bc5+ 10. Kh1 Rc8 11. e4 dxe4 12. Nxc6 bxc6 13. dxe4 Qxd1 14. Rxd1 Bg4 {Franzén,T (2276) -Haznedaroglu,K (2147) ICCF 2006 1-0 (38)}) (3. Nf3 Nf6 4. e3 a6 5. b3 Nc6 6. Bb2 d4 7. Ne2 Bg4 8. Ng3 e6 9. Be2 dxe3 10. dxe3 Qa5+ 11. Kf2 h5 12. Bxf6 gxf6 13. h3 Rd8 14. Qe1 Qxe1+ {Deneuville,C (2221)-Reina Guerra,E (1876) ICCF 2012 1-0 (74)}) 3... Nc6 (3... g6 4. d4 cxd4 5. exd4 Nc6 6. Nf3 Bg7 7. Ne5 Nf6 8. Ne2 O-O 9. c3 Qb6 10. Ng3 h5 11. Bd3 h4 12. Nf1 h3 13. Qf3 Nxd4 14. cxd4 Qxd4 15. gxh3 {Anda,H (2245)-Lund,S ICCF 2009 1-0 (37)}) (3... Bf5 4. Nf3 Nf6 5. Bb5+ Nc6 6. Ne5 Rc8 7. O-O a6 8. Nxc6 bxc6 9. Bxa6 Rc7 10. Be2 h5 11. Bf3 e6 12. d3 g6 13. h3 Bh6 14. e4 dxe4 15. dxe4 {Masset,J (1875)-Humbert,P (1343) ICCF 2015 1-0 (26)}) 4. Nf3 Nf6 (4... g6 5. Bb5 Bg7 6. O-O Nh6 7. Ne5 Bd7 8. Bxc6 Bxc6 9. Nxc6 bxc6 10. Na4 c4 11. d4 cxd3 12. cxd3 e5 13. e4 exf4 14. Bxf4 O-O 15. Kh1 dxe4 {1/2 (15) Pauwels,C (2547)-Jankowicz,R (2398) ICCF 2010}) 5. Ne5 g6 6. Bb5 Qd6 7. O-O Bg7 8. b3 Nd7 9. d4 cxd4 10. exd4 O-O 11. Be3 a6 12. Bxc6 bxc6 13. Na4 Nf6 {1/2 (13) Anda,H (2245)-Vieito Ribelles,A (2129) ICCF 2009}) 3. Nf3 g6 (3... d5 4. e4 d4 5. Ne2 Bg4 6. Ng3 e5 7. fxe5 Nge7 8. Bc4 Ng6 9. O-O Qc7 10. Be2 Bxf3 11. Rxf3 Ngxe5 12. Rf1 d3 13. cxd3 Nd4 14. b3 Bd6 15. Nf5 {Larsson,M (2392)-Peschardt,S (2423) ICCF 2004 1/2 (27)}) 4. g3 (4. e3 Bg7 5. Ne2 d5 6. d4 Nf6 7. c3 Qa5 8. dxc5 Qxc5 9. Ned4 Ne4 10. Qc2 O-O 11. Bd3 Nd6 12. O-O Bg4 13. Qf2 Rac8 14. Qg3 Bd7 15. a4 Qb6 {Anda,H (2197)-Sherwood,R (1927) ICCF 2013 0-1 (70)}) 4... Bg7 5. Bg2 d5 (5... Nf6 6. O-O O-O 7. d3 d6 8. Bd2 Qb6 9. Rb1 c4+ 10. Kh1 Be6 11. h3 Rac8 12. Kh2 h6 13. Nh4 cxd3 14. cxd3 Bd7 15. Be1 e5 16. Bf2 Qa6 17. fxe5 {Henri,J (2386)-Ciucurel,S (2397) ICCF 2008 0-1 (45)}) 6. O-O e6 7. d3 Nge7 8. Bd2 O-O 9. a3 (9. Rb1 b6 10. e4 a6 11. a3 Bb7 12. e5 f6 13. exf6 Rxf6 14. b4 cxb4 15. axb4 Nf5 16. Re1 Ncd4 17. Nxd4 Nxd4 18. Na4 Bc6 19. c3 Nf5 20. Nb2 Qd7 {Franzén,T (2321)-Myrene,J ICCF 2005 1/2 (48)}) 9... b6 10. Rb1 Bb7 11. e3 a6 12. Ne2 Qd7 13. b4 cxb4 {Henri,J (2386) -Barten,R (2387) ICCF 2008 1/2}) (2. g3 Nc6 (2... d5 3. Bg2 d4 4. Na4 e5 5. c4 Nf6 6. d3 h6 7. Nf3 Nc6 8. O-O Bd6 9. e3 O-O 10. Re1 Bd7 11. a3 b6 12. Bd2 Rc8 13. b4 cxb4 14. exd4 {Nagel,H (2170)-Franke,H ICCF 2013 0-1 (27)}) 3. Bg2 g6 4. b3 (4. d3 Bg7 5. Bd2 e6 (5... Nf6 6. Qc1 d5 7. Bh6 Bxh6 8. Qxh6 Be6 9. Nf3 d4 10. Nd1 Ng4 11. Qd2 Qd7 12. O-O h5 13. h4 f6 14. a3 Nge5 15. Nxe5 Nxe5 16. f4 Ng4 17. c4 {Henri,J (2328)-Lundberg,G (2294) ICCF 2010 1/2 (34)}) 6. a3 d5 7. Qc1 h5 8. h4 Nge7 9. Rb1 b6 10. b4 cxb4 11. axb4 Bb7 12. b5 Na5 13. Nf3 O-O 14. O-O Rc8 15. Na2 Nf5 {Henri,J (2328)-Dempster,D (1636) ICCF 2010 1-0 (34)}) 4... Bg7 5. Bb2 d6 (5... e6 6. Nf3 Nf6 7. Ne4 d6 8. Nxf6+ Bxf6 9. c3 O-O 10. h4 Ne5 11. Nxe5 Bxe5 12. h5 Rb8 13. f4 Bf6 14. hxg6 fxg6 15. Qc2 b6 16. Be4 Kg7 17. c4 {Traylor,B-Nurmi,R (1651) ICCF 2010 1/2 (31)}) 6. Nf3 e5 7. O-O Nf6 8. Re1 Bg4 9. Ng5 O-O 10. Nge4 Qd7 11. Nxf6+ Bxf6 12. Nd5 Bg5 13. d3 b6 {Bush,R-Haggard,T (1661) ICCF 2018 1-0 (34)}) (2. b4 cxb4 3. Nd5 e6 4. Nf4 e5 (4... Nf6 5. g3 e5 6. Nd3 Nc6 7. Bg2 d5 8. f4 e4 9. Ne5 Bc5 10. e3 Nxe5 11. fxe5 Ng4 12. Bb2 Qc7 13. Qe2 Nxe5 14. d4 Nc4 15. O-O-O Bg4 16. Qe1 {Dam,J (1744)-Daatselaar,J (2145) ICCF 2015 0-1}) 5. Nd5 Nf6 6. e4 Nxd5 7. exd5 Bc5 8. Bd3 e4 9. Qe2 O-O 10. Bc4 d6 11. Bb2 Nd7 12. Nh3 Nb6 13. O-O-O Qh4 {Dam,J (1744)-Almer,G (1958) ICCF 2015 0-1 (30)}) (2. b3 Nc6 (2... d5 3. d4 Nc6 4. Nf3 Bf5 5. e3 Nf6 6. h3 Nb4 7. a3 Nxc2+ 8. Ke2 Qa5 9. Qd2 Nxa1 10. Qb2 Nc2 11. e4 {1-0 (11) Sweetland,D (1285) -Riley,K (1462) ICCF 2017}) 3. e3 e5 (3... e6 4. Nf3 d5 5. Bb5 Bd7 6. d4 Nf6 7. Bxc6 Bxc6 8. O-O Be7 9. Ne5 O-O 10. Nxc6 bxc6 11. Ba3 cxd4 12. Bxe7 Qxe7 13. exd4 Qc7 14. h3 c5 15. Nb5 {Glover,M-Smith,M ICCF 2007 0-1 (37)}) 4. e4 g6 5. Nd5 Nf6 6. Nf3 Nxe4 7. Bb5 Bg7 8. d3 Nd6 9. Nxe5 Qa5+ {0-1 (9) Rellias, P-Ronderos,L ICCF 2011}) (2. e3 d5 (2... g6 3. Bc4 Bg7 4. Nf3 d6 5. Ng5 e6 6. Nf3 Nf6 7. d4 cxd4 8. Nxd4 d5 {0-1 (8) Bautista,E (1512)-Roberts,R (1529) ICCF 2014}) 3. b3 Nf6 4. a4 a6 5. a5 Nc6 6. Ba3 e5 7. Nf3 (7. Na4 Qxa5 8. Nf3 e4 9. Nh4 g5 10. g3 gxh4 11. gxh4 Ne5 12. h5 Nf3+ 13. Ke2 Bg4 14. h3 Nd4+ 15. Ke1 Bxd1 16. Kxd1 Nf3 {0-1 (16) Vaessen,J (1143)-Neijhof,R (2127) ICCF 2020}) 7... e4 8. Ng1 d4 9. Na4 Qxa5 10. Qe2 b5 11. Nb2 Bd6 12. f3 O-O 13. Nd1 Nb4 { Vaessen,J (1194)-Fluit,J (2201) ICCF 2019 0-1}) (2. Rb1 d5 3. d4 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Be2 a6 7. O-O Qc7 8. Bd2 Bd6 9. a3 O-O 10. Na4 cxd4 11. exd4 b5 12. Nc3 Ne4 13. g3 Nxd2 {Lonnee,G (2043)-Fluit,J (2272) ICCF 2020 0-1 (36)}) ( 2. Ne4 e5 3. c4 Nc6 4. Nf3 f5 5. Nc3 e4 6. Ng1 Nf6 7. d3 d6 8. dxe4 fxe4 9. Bg5 h6 10. Bxf6 Qxf6 11. Rb1 e3 12. f3 Qh4+ 13. g3 Qxc4 {Berger,B-Hey,B ICCF 2016 0-1 (36)}) (2. g4 Nc6 3. Bg2 d6 4. e4 g6 5. f4 Bg7 6. d3 Bd7 7. h3 e6 8. Nf3 Nge7 9. Ne2 Qb6 10. c3 O-O-O 11. Qc2 Qa6 12. Be3 Kb8 13. d4 cxd4 {De Smet,K (2196)-Depasse,J ICCF 2007 0-1 (32)}) 2... cxd4 3. Qxd4 Nc6 (3... e6 4. e4 Nc6 5. Qa4 a6 6. Nf3 Qc7 7. Nb5 Qb8 8. Nbd4 Nge7 9. c3 b5 10. Qc2 Bb7 11. Bd3 Ng6 12. Nxc6 Bxc6 13. Nd4 Bb7 14. g3 Bc5 15. O-O {Nielsen,J (1979)-Stefos,S (1777) ICCF 2016 1/2 (29)}) (3... Nf6 4. e4 Nc6 5. Qd3 g6 6. Nf3 Bg7 7. Bg5 O-O 8. Bxf6 Bxf6 9. O-O-O Qb6 10. Qb5 Bxc3 11. Qxb6 axb6 12. bxc3 Rxa2 13. Bc4 Ra4 14. Bb5 Rxe4 15. Rhe1 {Fonseca,P (1788)-Beijer,B (1815) ICCF 2018 0-1 (29)}) 4. Qh4 (4. Qd3 g6 (4... Nf6 5. Nf3 d6 6. a3 g6 7. Ne4 Nxe4 8. Qxe4 Bg7 9. Qa4 Bd7 10. Qf4 e5 11. Qg5 Bf6 12. Qh6 e4 13. Bg5 exf3 14. Bxf6 Qxf6 15. O-O-O fxg2 16. Bxg2 {Sweetland,D (1438)-Turner,L (1858) ICCF 2015 0-1 (39)}) 5. e4 Bg7 6. Nge2 Nf6 7. Nd5 O-O 8. h4 Ng4 9. h5 e6 10. Ne3 Nxe3 11. Qxe3 d5 12. hxg6 fxg6 13. c3 d4 14. Qh3 h5 15. Rb1 e5 {Ryska,J (2082)-Kregelin,J (2308) ICCF 2010 0-1 (60)}) (4. Qa4 d5 5. Bf4 f6 6. O-O-O e5 7. Nxd5 exf4 8. e3 Bd7 9. Qxf4 Rc8 10. Bc4 Ne5 11. Bb3 Ne7 12. Ne2 N7g6 13. Qg3 b5 14. f4 Nc4 15. e4 a5 {Azevedo,J (2272) -Lixa,A (1825) ICCF 2016 1-0 (45)}) (4. Qc4 e6 5. e4 Nf6 6. Nf3 d5 7. exd5 exd5 8. Qe2+ Be7 9. h3 O-O 10. Bd2 d4 11. Ne4 Bf5 12. Nfg5 Re8 13. Qc4 Ne5 14. Qe2 Rc8 15. Ng3 Bxc2 {Brião,P (1863)-Haller,P (2193) ICCF 2019 0-1 (25)}) (4. Qd1 g6 5. Bg5 Bg7 6. e3 Qa5 7. Nf3 Bxc3+ 8. bxc3 Qxc3+ 9. Nd2 Nb4 10. Bd3 Nxd3+ 11. cxd3 Qxd3 12. Nb3 Qb5 13. Bh4 Qb4+ 14. Nd2 Qxh4 15. O-O Qb4 {Kearns,A (1386) -Pardoe,I (1484) ICCF 2018 1-0}) 4... d5 (4... Nf6 5. Nf3 d5 6. Bg5 Qa5 7. O-O-O Be6 8. Nd4 Nxd4 9. Qxd4 Ne4 10. Bd2 Nxd2 11. Rxd2 O-O-O 12. e3 Bf5 (12... f6 13. Nb5 Bd7 14. Qxd5 Bxb5 15. Qc5+ Kb8 16. Rxd8+ Qxd8 17. Qxb5 e5 18. Bd3 Qc8 19. Be4 a6 20. Qd5 Bc5 21. Rd1 Qc7 22. Rd3 Bb4 23. a3 Ba5 24. b4 { Riihimäki,V (1936)-Cabral,R (1883) ICCF 2008 1-0 (52)}) 13. Nxd5 e6 14. Qc3+ Qc5 15. Qxc5+ Bxc5 16. Nc3 {Riihimäki,V (1949)-Marcotulli,G (1981) ICCF 2008 1/ 2 (42)}) 5. e4 (5. e3 Nf6 6. Nf3 e5 (6... d4 7. Nxd4 e5 8. Nxc6 bxc6 9. Bc4 Qc7 10. O-O Be7 11. e4 Nd5 12. Qg3 Nxc3 13. Qxg7 Rf8 14. bxc3 {1-0 (14) Baffo,J (2113)-Lasley,M (1784) ICCF 2015}) 7. Bb5 Bd6 8. O-O Bf5 (8... O-O 9. e4 Nxe4 10. Qxd8 Rxd8 11. Nxd5 Be6 12. Ne3 Rac8 13. c3 f6 14. Bc4 Kf7 {0-1 (14) Riihimäki,V (2019)-Höxter,H (2036) ICCF 2014}) 9. Qg5 g6 10. Qh4 O-O 11. e4 Nxe4 12. Qxd8 Rfxd8 13. Nxd5 Be6 14. Ne3 Rac8 15. c3 Bc7 16. Bc4 Nc5 { Riihimäki,V (1963)-Guerrero Morales,C ICCF 2015 0-1 (55)}) 5... d4 6. Nd5 (6. Nb1 Qa5+ 7. c3 Nf6 8. Nf3 Bg4 9. Be2 h5 10. h3 Bxf3 11. Bxf3 Ne5 12. O-O g5 13. Qg3 d3 {0-1 (13) Borisek,A (1611)-Gantar,J ICCF 2007}) 6... Nf6 (6... e6 7. Qxd8+ Kxd8 8. Nf4 Nf6 9. Bd3 e5 10. Nfe2 Bb4+ 11. Bd2 Re8 12. h3 Be6 13. Nf3 Rc8 14. Bxb4 Nxb4 15. Nxe5 Bxa2 16. Rxa2 Rxe5 17. Rxa7 Nxe4 18. f4 {Augereau,C (2118)-Ronat,O (2339) ICCF 2011 1/2 (26)}) 7. Bc4 (7. Nxf6+ exf6 8. a3 Bd6 9. Bd2 Qb6 10. O-O-O Be6 11. f4 Rc8 12. Bd3 (12. Nf3 Bxa3 13. bxa3 Qc5 14. Re1 Ne5 15. Nxd4 O-O {0-1 (15) Augereau,C (2118)-Roubaud,D (2361) ICCF 2011}) 12... Ba2 13. Qh5 a6 14. b4 g6 15. Qf3 O-O 16. Ne2 a5 17. Kb2 Nxb4 18. axb4 axb4 { Riihimäki,V (2036)-Osipov,A (2079) ICCF 2013 0-1 (27)}) 7... Be6 8. Nxf6+ exf6 9. Bxe6 Bb4+ 10. Kf1 fxe6 11. Qh5+ g6 12. Qe2 (12. Qb5 Qc7 13. g3 O-O-O 14. Qc4 Kb8 15. Kg2 e5 16. Nf3 Rc8 17. Rd1 (17. a3 Bd6 18. c3 dxc3 19. Qxc3 Rhd8 20. b4 Nd4 21. Qxc7+ Bxc7 {1/2 (21) Bialas,T (2281)-Kutscheid,H (2337) ICCF 2017}) 17... Rhd8 18. a3 Bf8 19. Bd2 Qd7 20. Qe2 Qe6 21. Ne1 h5 22. h4 d3 23. cxd3 Nd4 {Bialas,T (2298)-Müller,G (2395) ICCF 2017 0-1 (43)}) 12... Qb6 13. h4 { Augereau,C (2166)-Rohde,F (2202) ICCF 2020 1-0 (32)}) (1... f5 2. e4 (2. e3 Nf6 3. Bc4 e6 4. d4 Be7 5. Bd2 O-O 6. Qf3 d5 7. Bb3 a6 8. Nge2 Qe8 9. Nf4 Nc6 10. h4 Na5 11. h5 Nxb3 12. cxb3 c5 13. h6 g6 {Bautista,E (1512)-Stone,D (1699) ICCF 2014 0-1}) 2... fxe4 (2... e6 3. exf5 exf5 (3... Nf6 4. fxe6 dxe6 5. d4 Bb4 6. Bg5 O-O 7. Nf3 Qe8 8. Bd3 Nc6 9. O-O b6 10. Qd2 Bb7 11. a3 Bd6 12. Nb5 Nd8 13. Bf4 Bxf3 14. gxf3 Bxf4 15. Qxf4 {Berger,B-Acosta,E (1585) ICCF 2014 1-0 (43)}) 4. Qh5+ g6 5. Qe2+ Qe7 6. Nd5 Qxe2+ 7. Bxe2 Bd6 8. b3 h5 9. Bb2 Rh7 10. Nf3 c6 11. Ne3 Bc5 12. Ng5 Re7 13. Nc4 d6 14. d4 {Freire,D (1931)-Priest,S (1920) ICCF 2017 1-0 (39)}) (2... Nf6 3. exf5 d5 4. Bd3 c5 5. b3 Nc6 6. Nf3 d4 7. Ne4 Qd5 8. Ng3 Ne5 9. Nxe5 Qxe5+ 10. Qe2 {1-0 (10) Müller-Töpler,M (1924) -Priest,S (1948) ICCF 2016}) 3. d3 (3. Nxe4 Nf6 4. Nxf6+ exf6 5. d4 d5 6. Bd3 Be6 7. Ne2 Bd6 8. O-O O-O 9. c3 Qd7 10. Qc2 g6 11. Bh6 Rf7 12. f4 Bf8 13. Bxf8 Rxf8 14. f5 Bxf5 {Allmer,C-Snokowski,M (1793) ICCF 2013 1-0 (26)}) 3... exd3 ( 3... e3 4. Bxe3 Nf6 5. Nf3 e6 6. a3 (6. Qd2 Bb4 7. a3 Bxc3 8. Qxc3 Nc6 9. O-O-O b5 10. Ng5 Qe7 11. Be2 O-O 12. Bf3 Bb7 13. Rhe1 Rfb8 14. Bc5 Qe8 15. d4 Qg6 16. h4 h6 17. Nh3 Qf7 {Nielsen,J (1983)-Vestergård,S (2241) ICCF 2009 1/2 (39)}) 6... Nc6 7. h3 b6 8. d4 Bb7 9. d5 exd5 10. Bd4 Qe7+ 11. Qe2 Nxd4 12. Nxd4 Qxe2+ 13. Bxe2 c5 14. Nf3 a6 15. O-O {Strelecky,R-Livanos,C ICCF 2013 1-0 (33)}) 4. Bxd3 Nf6 5. g4 (5. Bg5 d6 (5... e6 6. Ne4 Nc6 7. Nxf6+ gxf6 8. Qh5+ Ke7 9. Be3 Qe8 10. Qh4 Ne5 11. O-O-O Nxd3+ 12. Rxd3 Rg8 13. Ne2 Qf7 14. Kb1 Ke8 15. f4 d5 16. Bd4 Be7 17. Qf2 {Henri,J (2335)-Rhodes,J (2383) ICCF 2006 0-1 (31)}) 6. Qe2 c6 7. Nf3 Bg4 8. Bxf6 gxf6 9. h3 Bh5 10. Bf5 Nd7 11. Ne4 Ne5 12. g4 Bf7 13. O-O-O Qa5 14. a3 Bg7 15. Rhe1 O-O 16. Nd4 d5 {Augereau,C (2166)-Nozicka,V (2108) ICCF 2020 1/2}) 5... g6 (5... d5 6. g5 Ne4 7. Nxe4 (7. Bxe4 dxe4 8. Qxd8+ Kxd8 9. Bf4 Bg4 10. h3 Bh5 11. Nxe4 Kc8 12. Ng3 Be8 13. O-O-O Bc6 14. Rh2 Nd7 15. f3 e5 16. Be3 Nc5 17. Re2 b6 18. Bf2 Nd7 {Baumann,W (1974)-Cuccumini,V (1982) ICCF 2018 0-1 (62)}) 7... dxe4 8. Bxe4 Qxd1+ 9. Kxd1 Nd7 10. Be3 e5 11. Nf3 Nc5 12. Bxc5 Bxc5 13. Nxe5 Bxf2 14. c3 Be6 15. Kc2 O-O 16. Nd3 Bh4 17. g6 { Henri,J (2335)-Niewiadomski,W (2395) ICCF 2006 0-1 (51)}) 6. g5 Nh5 7. Ne4 (7. Nge2 Bg7 8. Ng3 Nxg3 9. hxg3 d6 10. Rxh7 Bxc3+ 11. bxc3 Rxh7 12. Bxg6+ Rf7 13. Bxf7+ Kxf7 14. Qh5+ Ke6 15. g6 Nd7 16. g4 Ne5 17. Bf4 Qf8 18. Bxe5 dxe5 { Riihimäki,V (2011)-Stanghelle,A (1934) ICCF 2011 1/2 (41)}) 7... d5 8. Ng3 Nxg3 9. hxg3 Qd6 10. Be3 (10. Bf4 e5 11. Qe2 Nc6 12. O-O-O Be7 13. Be3 Nb4 14. Bc4 a5 15. c3 Qe6 16. cxb4 dxc4 17. b5 O-O 18. Rh4 Qf7 19. Qxc4 Be6 20. Qe4 Bxa2 21. Ne2 Bb3 {Matheis,T (2354)-Wharrier,J (2341) ICCF 2007 0-1 (55)}) (10. c3 Nc6 11. Qc2 Ne5 12. Be2 Bg7 13. Bf4 Bf5 14. Qb3 O-O-O 15. Nf3 Nxf3+ 16. Bxf3 e5 17. Be3 Qc6 18. Bg2 e4 19. Kf1 Be6 20. Qa3 a6 21. Kg1 Kb8 {Hering, H-Cantilo-Paz,A ICCF 2012 1-0 (53)}) 10... Bg7 11. c3 Nc6 12. Qb3 Be6 13. O-O-O {Manarin,F (1935)-Fister,B (2073) ICCF 2018 1-0 (26)}) (1... e6 2. Nf3 (2. g4 d5 3. e3 c5 4. Bg2 Nc6 5. b3 Nge7 6. Bb2 Ng6 7. Qe2 Be7 8. O-O-O O-O 9. f4 d4 10. Bxc6 bxc6 11. Ne4 a5 12. h4 Nxh4 13. g5 Nf5 {Fuhr,M (2283)-Peters,S ICCF 2009 1-0}) 2... f5 3. e4 fxe4 4. Nxe4 Nf6 5. Nxf6+ Qxf6 6. d4 b6 7. Bg5 Qf7 8. Bd3 Nc6 9. d5 (9. O-O Bb7 10. d5 exd5 11. Re1+ Be7 12. Ne5 {1-0 (12) Baumann,W (2013)-Ostermann,M (1979) ICCF 2012}) 9... Nb4 10. O-O Nxd3 11. Qxd3 Qg6 12. Qxg6+ hxg6 13. dxe6 {Mailfert,J (2342)-Vertes,A (2277) ICCF 2010 1-0 (50)}) ( 1... g6 2. h4 (2. g3 Bg7 3. Bg2 c6 (3... e5 4. d3 Ne7 5. f4 exf4 6. Bxf4 d5 7. Nf3 c6 8. Qd2 Na6 9. O-O-O b5 10. e4 b4 11. Ne2 dxe4 12. dxe4 Qxd2+ 13. Rxd2 O-O 14. Rhd1 Re8 15. Nfd4 {Glanville,C (2116)-Lanin,B (2050) ICCF 2013 1-0 (44) }) 4. e4 e5 5. Nge2 Nf6 6. O-O O-O 7. d4 Qc7 8. dxe5 Qxe5 9. Bf4 Qa5 10. Bd6 Re8 11. Nf4 b5 12. e5 Ba6 13. exf6 Bxf6 {Figiel,R-Szadkowski,K ICCF 2014 1-0}) (2. Nf3 Bg7 3. e3 d6 4. Bc4 e6 5. O-O Ne7 6. Re1 b6 7. d4 O-O 8. e4 Nbc6 9. Bb5 a6 10. Bxc6 Nxc6 11. Bg5 f6 12. Be3 Ne7 13. d5 e5 {Strelecky,R (1558)-Anderson, R ICCF 2020 0-1}) (2. b3 Bg7 3. Bb2 Nf6 4. Nf3 O-O 5. Rb1 d6 6. e4 e5 7. Bc4 { 1-0 (7) Rojas,E-Borbon Ceceña,J ICCF 2020}) (2. e3 Bg7 3. d4 a6 4. Nf3 d6 5. Ng5 Nf6 6. Bc4 O-O 7. O-O d5 8. Bd3 Nc6 9. h3 e5 10. dxe5 Nxe5 11. Be2 Qd6 12. Bf3 h6 13. Bxd5 Nxd5 {Egger,A-Baumann,W (2089) ICCF 2009 0-1}) 2... Nf6 (2... d5 3. h5 d4 (3... Bg7 4. e4 (4. d4 Nc6 5. e3 a6 6. Be2 Nf6 7. h6 Bf8 8. Nf3 e6 9. a3 Bd6 10. b4 Bd7 11. Qd3 a5 12. b5 Ne7 13. O-O c6 14. Ng5 cxb5 15. Nxb5 Bb8 {Nielsen,J (1954)-Moncayo Ventimiglia,L (2077) ICCF 2005 1-0 (36)}) 4... dxe4 5. Nxe4 Bf5 6. Ng3 Nc6 7. Nxf5 gxf5 8. c3 Qd6 9. Qf3 e6 10. Bb5 Nge7 11. d4 O-O-O 12. Ne2 Rhg8 13. Bg5 f6 14. Be3 a6 15. Bc4 {Anda,H (2171) -Wicklund-Hansen,G (2063) ICCF 2005 1-0 (32)}) 4. Ne4 Nc6 5. hxg6 fxg6 6. Nf3 Bg7 7. c3 Qd5 8. d3 Nf6 9. e3 Nxe4 10. dxe4 Qxe4 11. Ng5 Qe5 12. f4 Qd5 13. Qd3 h6 14. Qxg6+ {Vandermeulen,B (2586)-Mathe,I (2414) ICCF 2007 1-0 (44)}) (2... c5 3. e4 (3. h5 Bg7 4. Nf3 Nc6 5. e4 d6 6. Bc4 Nh6 7. Ng5 e6 8. d3 a6 9. a4 Bd7 10. Bd2 Qe7 11. a5 Nd4 12. Na4 Bxa4 13. Rxa4 d5 14. Ba2 O-O-O {Franzén,T (2276) -Heinrich,J (1937) ICCF 2006 1-0}) 3... Nc6 4. Be2 Nf6 5. d3 d5 6. exd5 Nxd5 7. Bd2 Bg7 8. Bf3 Nf6 9. h5 gxh5 10. Bxc6+ bxc6 11. Qf3 Rb8 12. Qg3 Rxb2 13. O-O-O Qb6 14. Qxg7 {Fuhr,M (2136)-Stanach,F ICCF 2007 0-1 (28)}) (2... Bg7 3. Nf3 d5 4. h5 (4. d4 Nf6 5. Ng5 c5 6. dxc5 Nc6 7. g3 h6 8. Nf3 d4 9. Na4 Qa5+ 10. Nc3 dxc3 11. b3 Bf5 12. Rb1 Rd8 13. Rg1 Rxd1+ 14. Kxd1 Qxa2 15. Bg2 Qxb1 {Whittle, P (1219)-Algeri,B ICCF 2019 0-1}) 4... Nc6 5. d4 e6 6. Bf4 Nf6 7. Nb5 Nxh5 8. Rxh5 gxh5 9. Nxc7+ Kf8 10. Nxa8 e5 11. Nxe5 Nxe5 12. dxe5 Be6 13. c4 Qxa8 14. cxd5 {Haak,G (2224)-Mayes,F (1539) ICCF 2011 1-0}) (2... h5 3. d4 d5 4. e4 dxe4 5. Nxe4 Nf6 6. Bd3 Bg7 7. c3 Nxe4 8. Bxe4 Nd7 9. Nf3 O-O 10. Bg5 Nf6 11. Bc2 Bg4 12. O-O c6 13. Re1 Qc7 14. Qd3 {Vajas,S (2021)-Dreisch,J (1970) ICCF 2017 1/2 (45)}) (2... h6 3. e4 Bg7 4. Bc4 e6 5. d4 d6 6. Be3 a6 7. h5 g5 8. Qd2 b5 9. Bd3 Nf6 10. a4 b4 11. Nce2 Nc6 12. f3 Bd7 13. Ng3 Qb8 14. a5 {Manarin,F (1655)-Lanin,B (2102) ICCF 2008 1/2 (29)}) 3. e4 (3. d4 d5 4. Bf4 Bg7 5. e3 c6 6. Qd2 a5 7. Be2 h5 8. Nf3 Na6 9. Ne5 Bf5 10. f3 Nb4 11. Rc1 Nd7 12. Nxd7 Qxd7 13. a3 Na6 14. Na4 Qd8 {Laurent,C (2103)-Schopf,O (2135) ICCF 2008 1/2 (48)}) 3... d5 4. e5 (4. exd5 Nxd5 5. Bc4 Nb6 6. Bb3 Nc6 7. Nf3 Bg7 8. h5 a5 9. a4 Bf5 10. d3 gxh5 11. Rxh5 Qd7 12. Ne4 e6 13. Rg5 Bg6 14. Qe2 O-O-O 15. Rb5 h6 { Mary,P (2195)-Glinz,A (2172) ICCF 2005 1/2 (55)}) 4... Ne4 5. Nce2 d4 (5... Bg7 6. d3 Nc5 7. d4 Ne6 8. h5 O-O 9. Nf3 c5 10. c3 Nc6 11. Be3 Qa5 12. dxc5 Nxe5 13. Nxe5 Bxe5 14. Qxd5 Bf6 15. hxg6 hxg6 16. Qf3 Rd8 17. Qh3 {Larsson,M (2395) -Degterev,P (2530) ICCF 2007 1/2 (45)}) 6. c3 dxc3 7. bxc3 Nc6 8. d4 Nxe5 9. f3 Nc5 10. Ng3 Bg7 11. Qc2 Qd5 12. dxc5 Bd7 13. Be3 {Press,S-Armstrong,A (1920) ICCF 2012 0-1 (33)}) (1... Nf6 2. g3 (2. d3 e6 (2... d5 3. Bg5 (3. f4 d4 4. Nb5 c6 5. Nxd4 Qxd4 6. Nf3 Qb6 7. c4 e5 8. e3 Bb4+ 9. Bd2 Qxe3+ 10. Be2 Bxd2+ 11. Nxd2 exf4 12. Nf3 Ng4 13. h3 Nf2 {0-1 (13) Fay,M-Huybrecht,F (2149) ICCF 2005}) (3. g3 d4 4. Ne4 Nxe4 5. dxe4 e5 6. e3 Bb4+ 7. Bd2 Qd6 8. a3 Bc5 9. Qe2 Nc6 10. b4 Bb6 11. c4 dxc3 12. Bxc3 f6 13. Qa2 a5 14. b5 Nd8 {Kolkman,C (1869)-Peetoom, F (1847) ICCF 2017 0-1 (43)}) 3... d4 4. Nb5 c6 5. Na3 e5 6. Nc4 Nbd7 7. Bxf6 Qxf6 8. f3 Bb4+ 9. c3 dxc3 10. Qa4 cxb2+ 11. Qxb4 bxa1=Q+ 12. Kf2 a5 13. Qb2 Qxb2 14. Nxb2 {Vaessen,J (1744)-Nascimento,J ICCF 2017 0-1}) (2... g6 3. Nf3 ( 3. b3 Bg7 4. Bb2 d5 5. d4 O-O 6. h3 Nbd7 7. Nf3 c5 8. dxc5 Nxc5 9. e3 a6 10. Be2 b5 11. b4 Nce4 12. Nxe4 Nxe4 13. Bxg7 Kxg7 14. Qd4+ f6 {Sánchez Villacanas, J-Mikalauskis,K ICCF 2007 0-1 (42)}) 3... Bg7 4. e4 O-O 5. Be2 c5 6. Be3 d6 7. O-O a6 8. d4 cxd4 9. Nxd4 Nc6 10. Re1 Bd7 11. h3 b5 12. a4 b4 13. Nd5 Nxe4 14. a5 {Allmer,C-Kadonas,K (1629) ICCF 2012 1-0 (25)}) 3. Nf3 Nc6 (3... Bb4 4. Bd2 Nc6 5. e4 d6 6. Be2 O-O 7. O-O a6 8. a3 Bxc3 9. Bxc3 b5 10. h3 e5 11. Qd2 Bb7 12. b4 Re8 13. Ra2 Bc8 14. Qe3 Nh5 15. Nxe5 {Wright,D (1618)-Williams,R (1346) ICCF 2014 1-0 (45)}) 4. e4 e5 5. a3 Be7 6. Be2 O-O 7. O-O a6 8. h3 b5 9. b4 Bb7 10. Be3 d5 11. exd5 Nxd5 12. Nxd5 Qxd5 13. c4 bxc4 {Wright,D (1618)-Williams,R (1346) ICCF 2014 1-0 (49)}) (2. e3 a6 (2... g6 3. Nf3 Bg7 4. Nd4 O-O 5. Bc4 a6 6. O-O b6 7. e4 d5 8. exd5 c5 9. Nc6 Nxc6 10. dxc6 Qc7 11. Qf3 Bg4 12. Qg3 Qxg3 13. fxg3 Nh5 14. h3 {Whittle,P (1349)-Anderson,L (1021) ICCF 2017 1-0 (26)}) 3. d4 b5 4. Qf3 Nc6 5. Bd3 d5 6. Nge2 b4 7. Na4 e5 8. dxe5 Nxe5 9. Qg3 Bd6 10. f4 Nxd3+ 11. cxd3 Bf5 12. d4 Bg4 13. Bd2 Qd7 {Costa,B (1835)-Wagner,K ICCF 2010 0-1}) (2. g4 Nxg4 (2... h6 3. d4 d5 4. g5 hxg5 5. Bxg5 e6 6. Bxf6 Qxf6 7. e4 Bb4 8. e5 Qf4 9. Nf3 g5 10. a3 Ba5 11. Bb5+ c6 12. Be2 g4 13. Ng1 Rxh2 14. Rxh2 {Drost,R (1924)-Lindahl,R (1846) ICCF 2014 0-1}) 3. e4 d6 4. f3 Nf6 5. d4 g6 6. Bf4 Bg7 7. Bc4 Nbd7 8. Nge2 Nb6 9. Bb3 Nh5 10. O-O Nxf4 11. Nxf4 e5 12. dxe5 Bxe5 13. Nd3 Bxc3 {Drost,R (1914)-Tarnowski,R (1992) ICCF 2017 0-1 (28)}) (2. Rb1 e6 3. b4 Be7 4. Nf3 b6 5. e3 Bb7 6. Be2 d6 7. a4 Nbd7 8. a5 Ne4 9. Nxe4 bxa5 10. Ng3 axb4 11. Rxb4 Rb8 12. Ra4 Ra8 13. Bb2 O-O {Wilshusen,H (1629) -Pickles,S (1509) ICCF 2014 1-0 (31)}) (2. b3 Nc6 3. d4 d5 4. Nf3 Bf5 5. Bb2 e6 6. a3 Ne4 7. e3 Bd6 8. Nxe4 dxe4 9. Nd2 Qg5 10. c4 O-O-O 11. b4 a6 12. Qb3 h5 13. Bc3 h4 {Baumann,W (1892)-Thys,H (1821) ICCF 2012 1-0 (36)}) 2... d5 (2... g6 3. Bg2 (3. d4 Bg7 4. e4 d6 5. Bg5 O-O 6. Qd2 Nbd7 7. O-O-O c5 8. Nf3 Qa5 9. Kb1 cxd4 10. Nxd4 Ne5 11. f4 Nc6 12. Nxc6 bxc6 13. Bxf6 Bxf6 14. Nd5 Qxd2 { Driessen,C (1860)-Gimeno Díaz,F (1854) ICCF 2010 0-1 (50)}) 3... Bg7 4. b3 Nc6 5. Bb2 b6 6. Nf3 Bb7 7. Nd5 e6 8. Bxf6 Bxf6 9. Nxf6+ Qxf6 10. O-O Nd4 11. Nxd4 Bxg2 12. Kxg2 Qxd4 13. e3 Qd5+ 14. Qf3 {Traylor,B-Smith,J ICCF 2010 0-1 (30)}) 3. Bg2 e5 (3... e6 4. b3 Bc5 5. e3 b6 6. Bb2 Ba6 7. d3 c6 8. Nf3 Nbd7 9. a3 b5 10. b4 Bb6 11. O-O Bb7 12. Ne2 a6 13. Ne5 O-O 14. Nf4 Nxe5 15. Bxe5 {Bush, R-Williams,R (1091) ICCF 2018 1-0 (35)}) 4. d3 (4. e4 d4 5. Nce2 d3 6. cxd3 Qxd3 7. f4 Nc6 8. fxe5 Nxe5 9. Nf4 Bg4 10. Nxd3 Nxd3+ 11. Kf1 Bxd1 12. e5 O-O-O 13. exf6 Rd6 14. Be4 Rxf6+ 15. Nf3 Rxf3+ {Borisenko,D-Koseoglu,O (1969) ICCF 2012 0-1}) (4. b3 Nc6 5. Bb2 Be7 6. Nf3 d4 7. Nb5 a6 8. Nbxd4 exd4 9. d3 Bb4+ 10. Nd2 Nd5 11. O-O O-O 12. e4 dxe3 {0-1 (12) Sexton,D-Rihtaric,I (1988) ICCF 2007}) (4. a4 Nc6 5. Nb5 a6 6. Nc3 Bb4 7. e4 Bxc3 8. bxc3 dxe4 9. d4 exd4 { 0-1 (9) Maki,H-Cooper,R (2046) ICCF 2013}) (4. d4 e4 5. f3 Bb4 6. fxe4 Nxe4 7. Qd3 f5 8. Bd2 O-O 9. Nxe4 fxe4 10. Qe3 Nc6 11. Bxb4 Nxb4 12. Qb3 a5 13. c3 Nc6 14. Bxe4 Be6 15. Bb1 {Strelecky,R (1564)-Moujan,P (2064) ICCF 2018 1-0 (26)}) 4... c6 5. Nf3 (5. e4 Bb4 6. Bd2 O-O 7. Nge2 d4 8. Nb1 Qb6 9. Qc1 c5 10. c3 Ba5 11. Na3 Be6 12. f4 Qa6 13. f5 Bd7 14. Nc4 Nc6 15. O-O Bd8 {Larsen,N (1894) -Liushnin,K (2307) ICCF 2013 1/2 (44)}) 5... Qc7 6. O-O Be7 7. e4 dxe4 8. dxe4 O-O 9. Qe2 Rd8 10. Be3 Na6 11. Rad1 Rxd1 12. Rxd1 Nc5 13. Ne1 {Nagel,H (2180) -Lorenz,R (2209) ICCF 2012 1/2}) (1... Nc6 2. d3 (2. d4 Nf6 3. d5 Ne5 4. e4 e6 5. f4 Ng6 6. dxe6 fxe6 7. e5 Ng8 8. Qh5 Bc5 9. Ne4 Be7 10. Bd3 Nh6 11. Ng5 Bxg5 12. fxg5 Nf5 13. g4 Nfh4 {Szymanski,P (1725)-Gonder,S ICCF 2015 0-1 (26)}) (2. e3 e5 3. Bc4 Nf6 4. a3 d5 5. Bb5 Bd6 6. d3 O-O 7. Bxc6 bxc6 8. Nge2 e4 9. dxe4 Nxe4 10. Nxe4 dxe4 11. O-O Qg5 12. Nf4 Bg4 13. Qe1 Bf3 {Christmann,F-Samolinov, N ICCF 2014 0-1}) (2. f4 e6 3. g3 d5 4. e3 Nf6 5. Nge2 Be7 6. d4 b6 7. b3 O-O 8. Bg2 Ba6 9. e4 dxe4 10. Nxe4 Bb4+ 11. c3 Nxe4 12. Bxe4 Nxd4 13. Bxa8 Bxe2 { Vaessen,J (1853)-Medina Mitchell,M ICCF 2016 0-1}) 2... Nf6 3. Bg5 d5 4. Qd2 e6 5. O-O-O d4 6. Ne4 Qd5 7. b3 Bb4 8. Qf4 Qa5 9. a4 Nd5 10. Qg3 Nc3 11. Nxc3 Ba3+ 12. Kb1 Qxc3 13. Bc1 {Vaessen,J (1901)-Kruimer,W (2023) ICCF 2016 0-1}) (1... b6 2. Nf3 Bb7 3. e3 c5 4. Bc4 e6 5. O-O Nf6 6. d3 d5 7. Bb5+ Nbd7 8. d4 Be7 9. dxc5 bxc5 10. Re1 O-O 11. Bd2 a6 12. Bd3 h6 13. h3 {Strelecky,R (1558)-Rouse,L ICCF 2020 1/2 (61)}) (1... c6 2. f3 e5 3. d4 d6 4. e4 Nd7 5. Bc4 Be7 6. d5 Ngf6 7. Kf2 Nb6 {0-1 (7) Miedema,H (1320)-Verstraten,R (2018) ICCF 2015}) (1... d6 2. g3 c6 3. d4 Qc7 4. f4 Nd7 5. Nf3 Nb6 6. e4 Bd7 7. b3 O-O-O 8. a4 f5 9. a5 Na8 10. Bg2 fxe4 11. Nxe4 a6 12. Neg5 Nh6 13. c4 {De Smet,K (2181)-Pereyra,D (1584) ICCF 2017 1-0}) (1... h5 2. e4 e5 3. Bc4 Qe7 4. d3 Nc6 5. Nf3 Nb4 6. a3 Nc6 7. Nd5 Qd6 8. Be3 Nd4 9. Nxd4 exd4 10. Bf4 Qc6 11. Nxc7+ Kd8 12. Nxa8 b5 13. Bd5 {Rouse,L (1417)-Morra,C ICCF 2020 1-0}) 2. e4 (2. e3 e5 (2... e6 3. f4 a6 (3... c5 4. Nf3 Nc6 5. Bb5 Bd7 6. O-O Be7 7. a3 Nf6 8. Ne5 Qc7 9. Nxd7 Nxd7 10. Qf3 a6 11. Be2 d4 12. Nd1 Bf6 13. d3 O-O 14. e4 e5 15. Nf2 {Wieringen,C (2286)-Taranto,G (2239) ICCF 2007 1/2 (47)}) (3... Nf6 4. Nf3 Nc6 5. d4 Be7 6. a3 O-O 7. Bd3 h6 8. Rg1 Nh7 9. g4 Bh4+ 10. Kd2 f5 11. gxf5 exf5 12. Qf1 Be7 13. Nxd5 Bf6 14. c4 Be6 15. Nxf6+ {Siigur,J (2446)-Põlendik,T (1778) ICCF 2016 1-0 (27)}) (3... Ne7 4. Nf3 f6 5. Bd3 f5 6. O-O c6 7. Qe2 c5 8. Bb5+ Nec6 9. Qd3 Na6 10. Ne5 Nab4 11. Qe2 Qf6 12. Nxc6 bxc6 13. Bxc6+ Nxc6 14. Qb5 Bd7 15. Qb7 { Leutterová,A-Ziman,S (1666) ICCF 2010 0-1 (41)}) 4. Nf3 (4. g3 b5 5. Bg2 Bb7 6. Nf3 Nf6 7. Qe2 Nbd7 8. O-O Bd6 9. b3 O-O 10. Bb2 Re8 11. Nd1 c6 12. Nf2 a5 13. d3 e5 14. fxe5 Nxe5 15. Nxe5 Bxe5 {Siigur,J (2428)-Dmitriev,V (2425) ICCF 2017 1/2}) 4... c5 5. b3 Bd6 6. g3 Nc6 7. Bg2 Nge7 8. Bb2 b5 9. Qe2 O-O 10. d3 Bb7 11. O-O Bc7 12. Nd1 Bb6 13. c4 Nf5 14. Rc1 {Siigur,J (2428)-Otspere,U (2314) ICCF 2017 1-0 (65)}) (2... Nf6 3. Nge2 (3. Bb5+ c6 4. Ba4 Nbd7 5. Qf3 e5 6. b3 b5 7. a3 bxa4 8. bxa4 Bd6 9. Qg4 Nxg4 10. Nf3 e4 11. Nd4 Qf6 12. Nxc6 Qxf2+ 13. Kd1 Qxg2 14. Re1 Nde5 {Marpaung,N-Santoso,L ICCF 2019 0-1}) 3... c5 (3... e5 4. Ng3 Nc6 5. Bb5 a6 6. Bxc6+ bxc6 7. O-O h5 8. d4 e4 9. a4 h4 10. Nh1 h3 11. Ng3 hxg2 12. Kxg2 Bh3+ 13. Kg1 Ng4 14. Re1 Nxh2 15. Kxh2 {Vaessen,J (1901) -Bäckström,B (2074) ICCF 2016 0-1}) 4. b3 d4 5. Na4 e5 6. Ba3 Qc7 7. exd4 cxd4 8. Bxf8 Kxf8 9. Ng3 h5 10. Ne2 Bd7 11. f3 Bc6 12. d3 Bxa4 13. bxa4 Nd5 14. Qd2 {Vaessen,J (1789)-Arteaga Hernández,L (1814) ICCF 2017 0-1}) (2... Bf5 3. g4 Bg6 4. Nf3 e6 5. h4 h6 6. Ne5 Bh7 7. b3 Be7 8. Bb2 Bxh4 9. Qe2 c6 10. O-O-O Be7 11. f4 Nd7 12. Nf3 Qa5 13. Qg2 O-O-O 14. Kb1 {Meneghetti,J (1764)-Matijosius,V (1666) ICCF 2015 1-0 (58)}) 3. Qh5 (3. d4 e4 4. f3 (4. b3 c6 5. Bb2 Bd6 6. Be2 Ne7 7. f3 Nf5 8. Qd2 Qh4+ 9. g3 Nxg3 10. O-O-O Nxh1 11. fxe4 Nf2 12. Rf1 Nxe4 { 0-1 (12) Jiménez Molina,P-Leon,O ICCF 2016}) (4. Na4 Nf6 5. c4 Bd6 6. cxd5 Nxd5 7. Nc3 Nxc3 8. bxc3 O-O 9. Ne2 Nd7 10. Bd2 Nf6 11. c4 c5 12. Rb1 cxd4 13. Nxd4 a6 14. g3 Be5 15. Bc3 Qc7 {Pérez Techachal,E-Rodriguez S.,M (1807) ICCF 2019 1-0 (69)}) 4... Nf6 5. Bd2 (5. fxe4 dxe4 6. Nge2 Bd6 7. Nb5 Bg4 8. Nxd6+ Qxd6 9. Bd2 O-O 10. h3 Be6 11. Nf4 c5 12. dxc5 Qxc5 13. Qe2 Qxc2 14. Bc3 Qxe2+ 15. Bxe2 Nd5 16. Nxd5 Bxd5 {Stapinski,R (2035)-Plonka,T (1601) ICCF 2008 0-1 (49)}) 5... Be7 6. h4 Nh5 7. Bb5+ c6 8. Ba4 Bxh4+ 9. Rxh4 Qxh4+ 10. Kf1 Ng3+ 11. Kf2 Nh1+ {0-1 (11) Jezersek,M-Hasanagic,A ICCF 2006}) (3. Nf3 e4 (3... Nf6 4. Nxe5 Bd6 5. d4 O-O 6. Be2 Nbd7 7. f4 Qe7 8. O-O Nb6 9. a4 Bf5 10. g4 Be6 11. a5 Nbd7 12. a6 bxa6 13. Nc6 Qe8 14. f5 Nb6 15. fxe6 {Riihimäki,V (1949)-Macenis,A ICCF 2007 1-0 (36)}) 4. Ne5 Bd6 5. f4 exf3 6. Nxf3 Nf6 7. Nb5 Be7 8. Bd3 O-O 9. O-O c5 10. b3 Nc6 11. Bb2 a6 12. Nc3 Be6 13. Ng5 Bg4 14. Ne2 h6 {Riihimäki,V (2011) -Torrijos Alhambra,J (2118) ICCF 2012 0-1 (73)}) (3. a3 Nc6 4. g3 Nf6 5. Bb5 Bd7 6. Nf3 Bd6 7. d4 e4 8. Ng5 h6 {0-1 (8) Pye,J (1600)-Claxton,T ICCF 2011}) ( 3. Qf3 Nf6 4. Qg3 (4. Bb5+ c6 5. Ba4 a5 6. d4 e4 7. Qf4 Bd6 8. Qg5 h6 9. Qxg7 Rh7 10. Qxf6 Qxf6 11. Nxd5 Qd8 12. Bd2 Qg5 13. c4 Qxg2 14. Nf6+ Ke7 15. Nxh7 Bg4 {Priore,L-Campani,P (2138) ICCF 2019 0-1}) 4... Nc6 5. Bb5 e4 6. Nge2 Bd7 7. O-O Bd6 8. Qxg7 Rg8 9. Qh6 Rg6 10. Qh4 Qe7 11. f3 O-O-O 12. g4 Bxg4 13. Ng3 Bxf3 14. Nxd5 Nxd5 {Vaessen,J (1579)-de Wit,W (1644) ICCF 2017 0-1 (48)}) 3... Nc6 (3... Qd6 4. d4 exd4 (4... Nf6 5. Qxe5+ Be7 6. Nb5 Qb4+ 7. c3 Qa5 8. Nxc7+ Kd8 9. Nxa8 Re8 10. b4 Nbd7 11. Qxe7+ Rxe7 12. bxa5 b6 13. axb6 axb6 14. Ba3 Re6 15. Nh3 Bb7 16. Ng5 {Graham,S-Hulsman,E ICCF 2019 1-0}) 5. exd4 c6 (5... Be6 6. Qd1 Nf6 7. Nf3 Be7 8. Bd3 O-O 9. a3 Re8 10. O-O a6 11. Ng5 Bd7 12. Re1 Nc6 13. Ne2 Bg4 14. h3 Bxe2 15. Bxe2 h6 16. Nf3 Ne4 17. c3 {Wieringen,C (2304) -Smuts,I (2179) ICCF 2007 1/2 (29)}) (5... Qe6+ 6. Qe5 Nc6 7. Nb5 Bb4+ 8. Bd2 Kd8 9. Qxe6 Bxd2+ 10. Kxd2 Bxe6 11. c3 Bf5 12. Ne2 a6 13. Na3 Nf6 14. f3 h5 15. Nf4 Re8 16. Bd3 Bxd3 17. Nxd3 {Wieringen,C (2301)-Murden,C (2374) ICCF 2006 1/2 }) 6. Nf3 Nf6 7. Qe5+ Be7 8. Bf4 Qd8 9. Bd3 Nbd7 10. Qc7 Qxc7 11. Bxc7 Nf8 12. h3 Ne6 13. Bh2 O-O 14. O-O Re8 15. Rfe1 {Wieringen,C (2301)-Knap,J (2092) ICCF 2005 1/2 (35)}) (3... Be6 4. Qxe5 Nd7 5. Qg3 Bd6 6. f4 Ngf6 7. Qxg7 Rg8 8. Qh6 Qe7 9. Nb5 a6 10. Nxd6+ Qxd6 11. Nf3 Rg6 12. Qh4 Rg4 13. Qf2 O-O-O 14. d3 Rg7 15. Bd2 {Lagergren,H (2073)-Bontems,C ICCF 2005 1-0 (30)}) (3... Nf6 4. Qxe5+ Be7 5. Nb5 Na6 6. Nd4 Ng4 7. Qf4 Bd6 8. Qf3 Nf6 9. Nf5 Nb4 10. Nxd6+ Qxd6 11. Qd1 Bf5 12. d3 d4 13. a3 dxe3 14. axb4 exf2+ 15. Kxf2 {Wieringen,C (2304) -Gronkowski,D (2353) ICCF 2007 1-0 (53)}) 4. Bb5 Qd6 5. d4 (5. Nf3 e4 6. Qe5+ Kd8 (6... Be6 7. Qxd6 Bxd6 8. Nd4 Nge7 9. O-O a6 10. Bxc6+ Nxc6 11. Nxc6 bxc6 12. b3 O-O 13. Bb2 Bf5 14. Ne2 Bg4 15. Nc3 Bh5 16. d4 f5 17. Bc1 Rf6 18. a4 { Sintoro,A-Peranic Radosevic,M ICCF 2018 1-0}) 7. Qxd6+ Bxd6 8. Ng5 Be6 9. Bxc6 bxc6 10. b3 Ke7 11. Nxe6 Kxe6 12. Bb2 Ne7 13. O-O-O f6 14. f3 exf3 15. gxf3 Rab8 16. Rdg1 Kf7 {Masset,J (1909)-Duvette,M (2158) ICCF 2012 1/2 (27)}) 5... exd4 6. exd4 Nf6 (6... a6 7. Bxc6+ bxc6 8. Nge2 Nf6 9. Qf3 Bg4 10. Qd3 Be7 11. f3 Bc8 (11... Bh5 12. Bf4 Qd7 13. Be5 Bg6 14. Qd2 O-O 15. O-O Ne8 16. Nf4 Bg5 17. Qf2 Bf5 18. Nd3 Bxd3 19. cxd3 Nd6 20. Na4 Rae8 21. Nc5 Qc8 22. f4 Bh6 23. b4 {Wieringen,C (2304)-Walker,G (2329) ICCF 2006 1/2 (32)}) 12. O-O O-O 13. Be3 Nh5 14. Rfe1 Re8 15. Na4 Qf6 16. Qd2 Be6 17. Nf4 Nxf4 18. Bxf4 {Wieringen,C (2286)-Boreux,P (2334) ICCF 2007 1/2 (34)}) (6... Be6 7. Nge2 O-O-O 8. Bf4 Qd7 9. Qf3 Nge7 10. O-O-O a6 11. Ba4 h5 12. h4 Nf5 13. Qd3 g6 14. Be5 Rg8 15. Bxc6 Qxc6 16. Nf4 Bh6 17. Kb1 Rge8 18. Qf3 {Siigur,J (2431)-Räßler,A (2331) ICCF 2015 1-0 (48)}) 7. Qe5+ Be6 (7... Kd8 8. Qe3 Nb4 9. Ba4 Qa6 10. Qe2 Qxe2+ 11. Ngxe2 Bf5 12. Kd1 c6 13. Re1 Bd6 14. a3 Na6 15. Bf4 Bxf4 16. Nxf4 g5 17. Re5 Bg4+ 18. Nfe2 Rg8 19. Kd2 {Wieringen,C (2286)-Oren,I (2309) ICCF 2007 1/2 (64)} ) 8. Bf4 a6 (8... O-O-O 9. Bxc6 bxc6 10. Qe3 Qb4 11. Nge2 h6 12. O-O Re8 13. Qd3 Nd7 14. a3 Qb7 15. b4 g5 16. Bd2 Nb6 17. Nc1 {1-0 (17) Wieringen,C (2301) -Blumbergs,I (2109) ICCF 2005}) (8... Qxe5+ 9. dxe5 Nd7 10. O-O-O a6 11. Bxc6 bxc6 12. Nge2 Nb6 13. Nd4 c5 14. Nxe6 fxe6 15. Bd2 Be7 16. f4 O-O 17. h4 Rfb8 18. g4 c6 19. Rdf1 a5 20. f5 {Henri,J (2328)-Catt,P (2352) ICCF 2010 1/2 (45)}) 9. Qe3 Qd7 10. Ba4 b5 11. Bb3 Bd6 12. Nf3 O-O 13. O-O Rae8 {Wieringen,C (2301) -Luzuriaga,N (2386) ICCF 2006 0-1 (47)} (13... Rfe8 14. Bxd6 Qxd6 15. Rfe1 Re7 16. Qd2 Rae8 17. Ne5 h6 18. Re2 Bg4 19. Nxg4 Nxg4 20. g3 Rxe2 21. Nxe2 Nf6 22. f3 Nh7 23. Kf2 Ng5 24. Re1 Qd7 25. h4 {Wieringen,C (2304)-Morais,G (2374) ICCF 2005 1/2 (43)})) (2. Nf3 d4 (2... Nf6 3. e4 (3. Ne5 d4 4. Nxf7 Kxf7 5. b3 dxc3 6. dxc3 Qxd1+ 7. Kxd1 Ne4 8. Ke1 g6 9. Bb2 Bg7 10. Rd1 Bxc3+ 11. Bxc3 Nxc3 12. Ra1 Nc6 13. f3 Nb4 14. Kd2 Ncxa2 {Cviková,K-Hrubý,T ICCF 2009 0-1 (27)}) (3. b3 c5 4. e3 a6 5. Bb2 e6 (5... Nc6 6. Na4 e6 7. c4 d4 8. exd4 cxd4 9. Bd3 Nb4 10. Bb1 b5 11. a3 Nc6 12. cxb5 axb5 13. Qc1 bxa4 14. Qxc6+ Bd7 15. Qc4 Rc8 16. Qe2 axb3 17. Nxd4 {Wieringen,C (2301)-Spasov,S (2412) ICCF 2006 1/2 (62)}) 6. d4 Qc7 7. Be2 cxd4 8. exd4 Bb4 9. Qd3 Ne4 10. Ne5 Bxc3+ 11. Bxc3 Qxc3+ 12. Qxc3 Nxc3 13. Bd3 f6 14. Nf3 O-O {Ridout,P-Williams,J (1909) ICCF 2017 0-1 (26)}) ( 3. h3 d4 4. Nb1 Nc6 5. c3 e5 6. e3 d3 7. g4 h5 8. Bxd3 Qxd3 9. g5 Nh7 10. Qe2 Qxe2+ 11. Kxe2 e4 12. Nh4 Nxg5 13. Rg1 Nxh3 14. Rg2 Be7 {Whittle,P (1416) -Popescu,V ICCF 2015 0-1}) 3... dxe4 4. Ng5 (4. Ng1 Bf5 5. g4 Bd7 6. g5 Ng8 7. Nxe4 f6 8. gxf6 exf6 9. Qh5+ g6 10. Qh4 Nc6 11. d3 f5 12. Qxd8+ Nxd8 13. Bg5 Ne6 14. Nf6+ Nxf6 15. Bxf6 Bg7 {Fritsch,J-Lyons,G ICCF 2015 1/2 (28)}) 4... Bf5 5. d3 exd3 6. Qf3 Qc8 7. Bxd3 Bxd3 8. Qxd3 Nc6 9. O-O e6 10. Rd1 Be7 11. b3 O-O 12. Nce4 Nxe4 13. Qxe4 g6 14. Be3 {Sartori,D (1924)-Zunkovic,S (2083) ICCF 2015 0-1 (45)}) (2... Bf5 3. Nd4 Bg6 4. g3 c5 5. Nf3 Nc6 6. Nh4 Nf6 7. Nxg6 hxg6 8. Bg2 e6 9. d3 Qd7 10. Bg5 Be7 11. Qd2 O-O-O 12. h3 a6 13. Na4 Qc7 14. Bf4 {Strelecky,R-Wolff,N (1679) ICCF 2014 1-0 (28)}) (2... Bg4 3. Ne5 Bf5 4. e3 Nd7 5. d4 Ngf6 6. f4 e6 7. Be2 h5 8. h3 Bb4 9. Bd2 Bxc3 10. Bxc3 Ne4 11. Nxd7 Qh4+ {0-1 (11) Ridout,P (1359)-Cooper,N (2197) ICCF 2020}) (2... e6 3. g3 Be7 4. Bg2 Nc6 5. d3 h6 6. b3 Nf6 7. e3 Bd7 8. O-O O-O 9. Bb2 a6 10. Re1 b5 11. a4 b4 12. Na2 a5 13. Ne5 Nxe5 14. Bxe5 {Ridout,P (1399)-Jakobi,W (1599) ICCF 2020 0-1 (31)}) 3. Ne4 (3. Nb5 c5 4. e3 a6 5. Na3 Nc6 6. exd4 cxd4 7. Bd3 Nf6 8. O-O g6 9. Nc4 Bg7 10. Re1 O-O 11. b3 Nb4 12. Bb2 Nxd3 13. cxd3 b5 14. Nce5 Bb7 { Proskurnov,S-Verst,P ICCF 2010 0-1 (41)}) 3... Nc6 (3... e5 4. d3 (4. e3 Nf6 ( 4... Qd5 5. d3 f5 6. Ng3 dxe3 7. fxe3 Nf6 8. e4 fxe4 9. dxe4 Qxd1+ 10. Kxd1 Ng4 11. Ke1 Be6 12. h3 Nf6 13. Nxe5 Bd6 14. Bf4 g5 15. Ng4 gxf4 16. Nxf6+ {Tsang, K-Humphreys,S ICCF 2007 0-1 (29)}) 5. Nxf6+ Qxf6 6. exd4 exd4 7. Bb5+ c6 8. Bd3 Bd6 9. Qe2+ Kd8 10. O-O Re8 11. Qd1 Bg4 12. Be2 d3 13. cxd3 Qf4 14. g3 Qf6 15. Nd4 Bh3 {Ferreira,L (1892)-Vorontsov,G (1835) ICCF 2020 0-1 (35)}) (4. Nxe5 Qe7 5. f4 f6 6. g3 fxe5 7. Bg2 exf4 8. gxf4 Qh4+ 9. Ng3 Nc6 10. O-O Nf6 11. Qe1 Nb4 12. Qd1 Ng4 13. h3 Qxg3 14. hxg4 Bxg4 15. Qe1 Qxe1 {Vaessen,J (1143)-Ketelaars, A (1483) ICCF 2020 0-1 (29)}) 4... Nc6 (4... f5 5. Neg5 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 h6 8. Nh3 Nc6 9. e3 g5 10. Be2 g4 11. O-O gxh3 12. g3 Nf6 13. exd4 exd4 14. Nh4 Be6 15. Ng6 Qd5 16. Nxh8 {Anderson,L (1052)-Drescher,A (1697) ICCF 2017 0-1}) 5. c4 f5 6. Bg5 Qd7 7. Ng3 f4 8. Ne4 h6 9. Bh4 g5 10. Nexg5 Bb4+ 11. Nd2 hxg5 12. Bxg5 Rh5 13. e4 Rxg5 14. h4 Qh7 15. a3 {Whittle,P (1452)-Nielsen, P (1888) ICCF 2014 0-1 (32)}) 4. e3 (4. h3 f5 5. Ng3 f4 6. Ne4 e5 7. c3 Bf5 8. d3 Bxe4 9. dxe4 dxc3 10. Qc2 cxb2 11. Qxb2 Bb4+ 12. Bd2 Bxd2+ 13. Nxd2 Qd4 14. Rb1 Qxb2 15. Rxb2 O-O-O {Ridout,P (1412)-Ohera,D (1915) ICCF 2019 0-1}) 4... f5 5. Ng3 dxe3 6. fxe3 e5 7. Bb5 Bd6 8. O-O Nge7 9. e4 a6 10. Bc4 b5 11. Bb3 Na5 12. d4 Nxb3 13. axb3 exd4 {Worthley,A-Puzanov,V (2126) ICCF 2011 0-1}) (2. g3 Bf5 3. Bg2 c6 4. d3 e6 5. a3 Nf6 6. Nf3 Be7 7. b4 Nbd7 8. Nh4 Bg6 9. Nxg6 hxg6 10. Bb2 Qc7 11. Qd2 Bd6 12. f4 e5 13. e3 O-O-O {Traylor,B-Stuart,P ICCF 2010 0-1 (32)}) (2. a3 c5 3. d4 Nf6 4. Bg5 cxd4 5. Bxf6 gxf6 6. Qxd4 e6 7. O-O-O (7. e3 Nc6 (7... Bd7 8. Nf3 Nc6 9. Qd2 Qb6 10. O-O-O h5 11. Bb5 a6 12. Ba4 O-O-O 13. Nd4 Na5 14. Bb3 Kb8 15. Kb1 Rc8 16. f4 Rg8 17. g3 f5 18. Ka1 Bg7 19. Ba2 { Hamann,H (2259)-Ovaskainen,J (2246) ICCF 2012 0-1 (47)}) 8. Qf4 a6 9. Nf3 f5 10. O-O-O h5 11. h4 Bg7 12. Qg3 Bxc3 13. bxc3 {Hamann,H (2259)-Farias,S (2174) ICCF 2012 1/2 (31)}) 7... Nc6 8. Qe3 d4 9. Qg3 Qe7 10. Ne4 h5 11. e3 f5 12. Nd2 h4 13. Qh3 Bd7 {Nývlt,Z (2420)-Pecka,J (2402) ICCF 2014 1/2 (57)}) (2. Nxd5 Qxd5 3. Nf3 Nf6 4. h4 e5 5. b3 Nc6 6. c4 Qd6 7. a4 a5 8. Ba3 Nb4 9. Rc1 e4 10. Ng5 c5 11. g4 Bxg4 12. Ra1 Nd3+ 13. exd3 Bxd1 {Whittle,P (1219)-Cordova Arizaga,C ICCF 2019 0-1 (26)}) (2. h3 Nf6 3. d4 Nbd7 4. Bf4 e6 5. a3 g6 6. Nf3 Bg7 7. Qd3 O-O 8. O-O-O c5 9. Na4 cxd4 10. Nxd4 e5 11. Be3 exd4 12. Bxd4 Re8 13. Nc3 a6 {Cochran,J-Carey,G ICCF 2019 0-1}) (2. h4 d4 3. Ne4 e5 4. Nf3 Nc6 5. b3 Qd5 6. Ng3 e4 7. Ng5 h6 8. Nh3 Qe5 9. Rb1 e3 10. dxe3 Bb4+ 11. Bd2 dxe3 12. Bxb4 Nxb4 13. a3 Qc3+ {Bautista,E (1497)-Doughty,R ICCF 2014 0-1}) 2... dxe4 ( 2... d4 3. Nce2 (3. Nb1 Nf6 (3... e5 4. Bc4 (4. d3 Nc6 5. Nf3 Bg4 6. h3 Bh5 7. g4 Bg6 8. Bg2 f6 9. a3 Qd7 10. O-O O-O-O 11. Nbd2 Bc5 12. c4 dxc3 13. Nb3 { 1-0 (13) Walters,B (1571)-Gillard,J (1585) ICCF 2016}) (4. Nf3 Bd6 5. Bb5+ (5. Bc4 Nf6 6. Ng5 O-O 7. c3 h6 8. Nf3 Nxe4 9. O-O Nc6 10. d3 Nf6 11. Nh4 Na5 12. Qf3 Nxc4 13. dxc4 e4 14. Qd1 d3 15. Be3 Ng4 16. f3 Bxh2+ {Medina,G (1492) -Lafferty,B ICCF 2015 0-1}) 5... c6 6. Bc4 Nf6 7. d3 b5 8. Bb3 O-O 9. c3 dxc3 10. Nxc3 Nbd7 11. O-O a5 12. a4 b4 13. Ne2 Nc5 14. Bc4 Be6 15. Bxe6 Nxe6 { Vajas,S (2022)-Kuuse,K (2036) ICCF 2017 1/2 (34)}) 4... Nf6 5. d3 Bd6 (5... h6 6. Ne2 Bd6 7. h3 O-O 8. Nd2 c5 9. O-O Nc6 10. a4 a6 11. Ng3 Bd7 12. Nf3 Bc7 13. Bd2 Rb8 14. Qc1 Nh7 15. c3 Qe7 16. cxd4 exd4 17. Re1 {Starodubtsev,V (2276) -Van den Bergh,L (1985) ICCF 2017 1/2 (54)}) 6. Ne2 c5 7. Nd2 a6 8. a4 Nc6 9. O-O O-O 10. Nf3 Na5 11. Ba2 b5 12. Bg5 h6 13. Bxf6 Qxf6 14. Bd5 Ra7 15. axb5 { Krawczyk,W-Lyashenko,S (1922) ICCF 2016 1-0 (32)}) 4. e5 Nd5 (4... Ng4 5. f4 Nc6 6. Bc4 a6 7. a3 Nh6 8. Nf3 e6 9. b4 Nf5 10. O-O Be7 11. Bb2 h5 12. Bd3 h4 13. Be4 Qd7 14. Rf2 O-O 15. d3 h3 16. g3 {Krawczyk,W-Radtke,B ICCF 2016 1-0 (28)}) 5. Nf3 (5. c4 Nb6 6. d3 Nc6 7. f4 f6 8. Nf3 fxe5 9. Nxe5 Nxe5 10. fxe5 g6 11. Be2 Bg7 12. O-O Nd7 13. e6 Ne5 14. Bg4 Qd6 15. Bf4 Bxe6 16. Bxe6 Qxe6 { Krawczyk,W (2254)-Visigalli,C (2156) ICCF 2017 1/2 (38)}) 5... c5 6. Bb5+ (6. Bc4 Bf5 7. d3 Nc6 8. O-O h6 9. Bb5 Qc7 10. Nbd2 a6 11. Bxc6+ Qxc6 12. a4 g5 13. Nc4 b6 14. h4 O-O-O 15. a5 b5 16. Nb6+ Nxb6 17. axb6 Kb7 {Figiel,R-Brzoza,M (2235) ICCF 2014 0-1 (37)}) 6... Bd7 7. Bxd7+ Qxd7 8. O-O Nc6 9. Re1 d3 10. cxd3 Ndb4 11. d4 Nxd4 12. Nxd4 Qxd4 13. Na3 e6 14. Nc2 Nxc2 {Krawczyk,W (2240) -Gross,M (2216) ICCF 2017 1/2 (49)}) (3. Nd5 c6 (3... e5 4. Nf3 (4. Bb5+ Bd7 5. Bxd7+ Nxd7 6. d3 c6 7. Nb4 Bxb4+ 8. Bd2 Bxd2+ 9. Qxd2 Ngf6 10. Nf3 O-O 11. O-O h6 12. Rfe1 Re8 13. c3 c5 14. c4 a6 15. b4 b6 {Almeida,C-Rouse,L (1417) ICCF 2020 0-1 (45)}) (4. g3 c6 5. c4 cxd5 6. cxd5 Nf6 7. Nf3 Bg4 8. Bg2 Bd6 9. O-O Nxe4 10. d3 Nf6 11. Qa4+ Qd7 12. Qxd7+ Nbxd7 13. Nd2 Be2 14. Re1 Bxd3 15. f4 e4 {Selby,R (1348)-Roncea,I (1741) ICCF 2014 0-1 (37)}) 4... c6 5. c4 (5. Nb4 Bg4 6. a3 Nf6 7. Bd3 Bxb4 8. axb4 Nbd7 9. O-O O-O 10. h3 Bh5 11. Re1 Qb6 12. Bc4 Qxb4 13. b3 Nb6 14. Ba3 Bxf3 15. Qxf3 Qxd2 16. Bxf8 Nxc4 {Sussarellu,G-Carboni, T ICCF 2018 1/2 (43)}) 5... cxd5 6. cxd5 Bd6 7. Bb5+ Bd7 8. Qe2 Nf6 9. Bxd7+ Nbxd7 10. O-O O-O 11. d3 Rc8 12. Nh4 g6 13. Bh6 Re8 14. Rac1 Rxc1 15. Rxc1 { Wojcik,M-De La Forét,F (1696) ICCF 2016}) (3... Be6 4. Nf4 (4. Bc4 c6 5. Nf3 cxd5 6. exd5 Bxd5 7. d3 Bxc4 8. dxc4 h6 9. O-O Nc6 10. Re1 e6 11. Ne5 Nxe5 12. Rxe5 Bd6 13. Re1 Bc5 14. Qg4 g5 15. Qh5 Qf6 {Jezersek,M-Gradisar,M ICCF 2005 0-1 (34)}) 4... Qd6 5. Nxe6 Qxe6 6. b3 Qxe4+ 7. Be2 Nc6 8. Nf3 e5 9. O-O O-O-O 10. Re1 f6 11. d3 Qd5 12. c4 Qd7 13. a4 Bb4 14. Nd2 Nh6 15. Bf3 {Sutcliffe,P (1623)-Illingworth,J (1819) ICCF 2016 0-1 (48)}) (3... Nc6 4. d3 e5 5. a3 Nf6 6. h3 Be6 7. Bg5 Bxd5 8. Bxf6 Qxf6 9. exd5 Ne7 10. Qf3 Qd6 11. g4 Ng6 12. O-O-O Nf4 13. Bg2 Nxg2 14. Qxg2 Be7 15. Re1 {Rixon,A (1369)-Mill-Wilson,G (1347) ICCF 2019 1-0 (31)}) (3... e6 4. Nf4 Bd6 5. Qg4 Bxf4 6. Qxf4 Nf6 7. Qg5 O-O 8. e5 Nfd7 9. Qxd8 Rxd8 10. Nf3 c5 11. Bd3 Nc6 12. Be4 Ndxe5 13. Nxe5 Nxe5 14. d3 f5 15. Bf4 {Costa,H (1672)-Monteiro,A (1743) ICCF 2011 1-0 (26)}) 4. Nf4 (4. Nb4 e5 5. a3 (5. d3 Bxb4+ 6. Bd2 Qe7 7. Nf3 Bg4 8. Be2 Bxd2+ 9. Qxd2 Nf6 10. O-O O-O 11. a3 Nbd7 12. Qb4 Qxb4 13. axb4 a6 14. c3 dxc3 15. bxc3 Rad8 16. Rfd1 Rfe8 {Sweetland,D-Saba,N (1561) ICCF 2014 0-1 (25)}) (5. Bc4 Bxb4 6. Ne2 b5 7. Bb3 Nf6 8. O-O Nxe4 9. a3 Be7 10. d3 Nc5 11. a4 Nxb3 12. cxb3 O-O 13. Ng3 Be6 14. axb5 cxb5 15. Ne4 f5 16. Ng3 f4 {Van Hof,K-Larson,M ICCF 2017 0-1 (25)}) 5... Be6 6. d3 Bd6 7. h3 Ne7 8. Nf3 Qb6 9. Bd2 a5 10. Na2 Qxb2 11. Qc1 Qxc1+ 12. Nxc1 f6 13. Be2 O-O 14. O-O Nd7 15. a4 Bb4 {Korzh,A-Ferdinand,J ICCF 2006 (45)}) 4... e5 5. Nd3 Bd6 (5... Nd7 6. Qf3 Ngf6 7. Nh3 Bd6 8. Be2 Nb6 9. b3 g5 10. Nxg5 Rg8 11. Qg3 h6 12. h4 hxg5 13. hxg5 Nxe4 14. Qf3 Nxg5 15. Qh5 e4 16. Nb2 Nd5 17. Bc4 {Klein,J (1690)-Dostál,S (1747) ICCF 2010 0-1}) 6. Qh5 (6. Nf3 Bg4 7. Be2 Nd7 8. h3 Bh5 9. O-O Ngf6 10. c3 c5 11. cxd4 cxd4 12. Qc2 O-O 13. a3 Nxe4 14. Qd1 Nef6 15. b3 Bg6 16. Bb2 e4 17. Nxd4 exd3 {Dejonckheere,D-Humbert, P ICCF 2011 0-1 (53)}) 6... Qe7 7. Nf3 Nd7 8. Ng5 Ngf6 9. Qh4 Nxe4 10. Nxe5 Qxg5 11. Qxg5 Nxg5 12. Nxd7 Bxd7 13. d3 Be7 14. h4 Ne6 {Beeman,B-Nurmi,R ICCF 2008 0-1 (35)}) (3. Na4 e5 (3... a6 4. Bc4 b5 5. Bxf7+ Kxf7 6. d3 bxa4 7. Qf3+ Ke8 8. e5 c6 9. Bf4 Qa5+ 10. Kd1 Qb6 11. Ne2 Qxb2 12. Kd2 Qb4+ 13. c3 Qb2+ 14. Kd1 Qxa1+ 15. Nc1 {Riemann,M (1626)-Larson,M (1796) ICCF 2017 0-1}) 4. b3 (4. c3 a6 5. Nf3 Nc6 6. cxd4 exd4 7. d3 b5 8. Qc2 Nb4 9. Qd2 bxa4 10. a3 Nc6 11. b4 axb3 12. Bb2 g6 13. Qc1 Nge7 14. Qc4 Be6 15. Qc1 a5 {Morra,C-Waitkus,J ICCF 2020 0-1 (33)}) (4. Nf3 Nc6 5. Bb5 Bd7 6. c3 Nf6 7. d3 a6 8. Bxc6 Bxc6 9. Nxe5 Qd6 10. Nxc6 bxc6 11. O-O Be7 12. cxd4 Qxd4 13. Be3 Qd8 14. Rc1 O-O 15. Rxc6 Qd7 {Spagnoli,L-Erdem,N (1812) ICCF 2012 1-0}) (4. g3 Bd7 5. b3 Nf6 6. d3 b5 7. Nb2 Bb4+ 8. Bd2 Bc3 9. Rb1 b4 10. Na4 Bxa4 11. bxa4 Qd7 12. Bxc3 bxc3 13. Rb5 a6 14. Rxe5+ Kf8 15. Bh3 Qd6 {Walters,B (1455)-Che,T (1622) ICCF 2015 0-1 (57)} ) 4... Bd6 5. Bb2 c6 6. Bc1 f5 7. Qe2 fxe4 8. Qxe4 Nf6 9. Qf3 b5 10. Nb2 e4 11. Qe2 O-O 12. a4 Na6 13. axb5 d3 14. cxd3 Nb4 {Vaessen,J (1304)-Eijkenboom,R ICCF 2018 0-1}) (3. Nb5 a6 (3... c5 4. Bc4 a6 5. Na3 e5 6. Qf3 Nf6 7. d3 Bg4 8. Qg3 Nc6 9. h3 Bd7 10. Nf3 Nh5 11. Qh2 Bd6 12. O-O Qe7 13. Bd2 O-O 14. Rac1 b5 15. Bd5 {Bilbao,J-Saba,N (1627) ICCF 2013 0-1 (37)}) (3... e5 4. Nf3 Nc6 5. Bd3 a6 6. Na3 Bxa3 7. bxa3 Bg4 8. O-O Qf6 9. Re1 Bxf3 10. gxf3 Nge7 11. c4 Ng6 12. a4 Nh4 13. Qe2 Qg5+ 14. Kh1 Qg2# {0-1 (14) Mair,J (1435)-Ward,B (1620) ICCF 2015}) (3... h5 4. Nf3 Nc6 5. d3 a6 6. Na3 h4 7. Bg5 f6 8. Bxh4 g5 9. Bg3 Ne5 10. Nxe5 fxe5 11. Bxe5 Bg7 12. Bxg7 Rh4 13. g3 e5 14. gxh4 g4 15. Bxe5 { Pursehouse,G-Flavell,G ICCF 2006 1-0 (25)}) 4. Na3 e5 5. c3 Nf6 6. Bc4 Bxa3 7. bxa3 dxc3 8. dxc3 Qxd1+ 9. Kxd1 Nxe4 10. Nf3 Nxf2+ 11. Kc2 Bf5+ 12. Kd2 Nd7 13. Re1 Ne4+ 14. Kd3 Nd6+ {Selby,R (1259)-Nurmi,R (2011) ICCF 2019 0-1 (28)}) (3. Bb5+ c6 4. Bc4 dxc3 5. bxc3 e5 6. Nf3 Bd6 7. d4 exd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 Nf6 11. Ne5 O-O 12. O-O Nxe4 13. Qe2 Qxd4 14. Nxf7 Rxf7 {Amaro Quero, A-Kajzinger,P ICCF 2016 0-1 (28)}) (3. Nf3 dxc3 4. dxc3 Qxd1+ 5. Kxd1 Nf6 6. Bc4 Nxe4 7. Rf1 Bg4 8. Be3 Nc6 9. h3 Bxf3+ 10. gxf3 Nd6 11. b3 Nxc4 12. bxc4 g6 {0-1 (12) Montalvo,M-Povarenkov,S (2235) ICCF 2011}) 3... c5 (3... e5 4. Nf3 ( 4. f4 Nc6 (4... Bg4 5. d3 Nc6 6. fxe5 Nxe5 7. a3 Ne7 8. Bf4 N7g6 9. Qd2 Be7 10. Qa5 b6 11. Qa4+ Bd7 12. Qxd4 Bf6 13. Qe3 Ng4 14. Qc1 Nxf4 15. Nxf4 Bd4 16. Ngh3 {Ljungström,E (2263)-Wójcik,W ICCF 2005 0-1 (27)}) (4... exf4 5. Nf3 g5 6. Nfxd4 Bg7 7. Nb3 Nf6 8. h4 Bg4 9. d3 h6 10. hxg5 hxg5 11. Rxh8+ Bxh8 12. Qd2 Nc6 13. Na5 Nxa5 14. Qxa5 Nd7 15. Qb5 c5 16. Qxb7 {Relyea,A (1924)-Gudichsen,G (2142) ICCF 2013 0-1 (29)}) (4... f6 5. Nf3 Nc6 6. fxe5 fxe5 7. d3 {1-0 (7) Jiménez de Velasco Mazarío,J-Anguís,M (1607) ICCF 2007}) 5. Nf3 (5. d3 Bd6 6. fxe5 Nxe5 7. Bf4 Qf6 8. Bxe5 Bxe5 9. Nf3 Ne7 10. Nxe5 Qxe5 11. Qd2 O-O 12. O-O-O c5 13. Ng1 Be6 14. Kb1 Qd6 15. Ne2 a5 16. Nf4 a4 {Etmans,M (1992)-Thorn Leeson,J (2224) ICCF 2006 0-1 (59)}) 5... Bg4 (5... exf4 6. Nxf4 (6. c3 g5 7. Qb3 dxc3 (7... d3 8. Ned4 Nxd4 9. cxd4 g4 10. Ne5 Nh6 11. Qxd3 c6 12. b3 f6 13. Nc4 b5 14. Nb2 Bg7 15. a4 a6 16. Qc3 O-O 17. axb5 cxb5 18. Bxb5 f5 19. Bc6 { Bender,K (2313)-Bars,J (2407) ICCF 2019 1/2 (47)}) 8. bxc3 g4 9. Nfd4 Bd6 10. Bb2 Nge7 11. O-O-O Na5 (11... O-O 12. h3 g3 13. Nf3 b5 14. Qxb5 Rb8 15. Qh5 f6 16. d4 Kh8 17. Rd2 Be6 {0-1 (17) Bender,K (2313)-Wölfelschneider,P (2344) ICCF 2019}) 12. Qc2 O-O 13. c4 Be5 14. Nb3 Bxb2+ 15. Kxb2 Nxb3 16. axb3 Ng6 17. d4 a5 {Bender,K (2313)-Köhl,R (2305) ICCF 2019 1/2 (46)}) 6... g5 (6... Bd6 7. d3 Nf6 8. Be2 O-O 9. c3 Bc5 10. b4 Bb6 11. b5 Ne7 12. Nxd4 Bxd4 13. cxd4 Qxd4 14. Rb1 a6 15. b6 c5 16. Bb2 Qb4+ 17. Qd2 a5 18. Rc1 {Ormsby,A (2037)-Jefferson,N (2153) ICCF 2013 1-0 (50)}) 7. Nd3 Bg7 (7... Qe7 8. c3 Nf6 9. e5 Bg4 10. h3 Bxf3 11. Qxf3 Nd7 12. Be2 O-O-O 13. O-O Ndxe5 14. Nxe5 Qxe5 15. Qf5+ Kb8 16. Qxe5 Nxe5 17. Rf5 f6 18. Kf1 Be7 19. b3 {Matheis,T (2354)-Daubenfeld,N (2400) ICCF 2007 1/2 (35)}) 8. g3 Qe7 (8... h5 9. Bg2 h4 10. O-O hxg3 11. hxg3 g4 12. Nh4 Qd6 13. Qe1 Ne5 14. Qf2 Be6 15. Nf5 Bxf5 16. Qxf5 Ne7 17. Qg5 Nxd3 18. Qxg7 O-O-O 19. Qxg4+ f5 20. exf5 {Fuhr,M (2232)-Zlotkowski,A (2384) ICCF 2014 0-1}) 9. Nf2 Nf6 10. d3 (10. Nxg5 h6 11. Nf3 Nxe4 12. Nxe4 Qxe4+ 13. Qe2 Qxe2+ 14. Bxe2 Nb4 15. Bd1 Bh3 16. Kf2 {Matheis,T (2354)-Southwell,H (2403) ICCF 2007}) 10... h6 11. Be2 Be6 12. c4 Nd7 13. Rb1 g4 14. Nh4 h5 15. Ng2 O-O-O 16. b4 Nxb4 17. Qb3 {Brodda,W (2490)-Drugda,M (2456) ICCF 2006 0-1 (41)}) 6. fxe5 Bxf3 7. gxf3 Qh4+ 8. Ng3 Nxe5 9. d3 Bb4+ 10. Kf2 O-O-O (10... Ne7 11. f4 Ng4+ 12. Kg2 O-O 13. Be2 Ne3+ 14. Bxe3 dxe3 15. c3 Ba5 16. f5 Bb6 17. Rg1 Kh8 18. Qf1 Rad8 19. Kh1 g6 20. Qf3 f6 21. fxg6 hxg6 22. Nf5 {Matheis,T (2292)-Keitsch,U (2319) ICCF 2006 1-0 (31)}) 11. f4 Ng4+ 12. Kg2 Ne7 (12... N8h6 13. Qf3 Rhg8 14. h3 Ne3+ 15. Bxe3 dxe3 16. Qxe3 f5 17. Qxa7 c6 18. d4 Kc7 {0-1 (18) Ormsby,A (2037) -Taylor,T (2312) ICCF 2013}) 13. h3 Nf6 14. a3 Ba5 15. b4 Bb6 {Brodda,W (2490) -Habermehl,T (2507) ICCF 2006 1/2 (38)}) (4. Ng3 Nf6 (4... Nc6 5. Bc4 (5. Bb5 Nge7 (5... Bd6 6. Bxc6+ (6. d3 Nge7 7. c3 O-O 8. Nf3 a6 9. Ba4 Bc5 10. O-O Qd6 11. c4 Rb8 12. a3 b5 13. cxb5 axb5 14. Bb3 b4 15. a4 Na5 16. Nd2 Be6 17. Bxe6 Qxe6 {Henri,J (2337)-Beskov,V ICCF 2007 1/2 (58)}) 6... bxc6 7. Nf3 Ne7 8. O-O Ng6 9. d3 O-O 10. c3 c5 11. Nf5 h6 12. Ne1 Re8 13. Qh5 Qf6 14. Nf3 dxc3 15. bxc3 Bf8 16. Rb1 Nf4 17. Bxf4 {Vorontsov,G-Aksenov,A ICCF 2012 0-1 (60)}) (5... Bd7 6. Nf3 (6. c3 Qe7 7. Nf3 O-O-O 8. Bxc6 Bxc6 9. cxd4 exd4 10. d3 Qb4+ 11. Qd2 Bb5 12. Qxb4 Bxb4+ 13. Bd2 Bd6 14. Ke2 Nf6 15. a4 Bd7 16. Nxd4 Be5 17. Bc3 Rhe8 {Justesen,A (2000)-Freire,D (1948) ICCF 2010 1-0 (35)}) 6... Bd6 7. O-O Nge7 8. d3 O-O 9. Bd2 a6 10. Ba4 Bg4 11. h3 Bxf3 12. Qxf3 Ng6 13. Nf5 Nh4 14. Qg4 Nxf5 15. Qxf5 Qf6 16. Qxf6 gxf6 17. f4 {O'Neill-MCAleenan,C (1751)-Walsh,P ICCF 2008 1-0}) (5... Qf6 6. c3 Bc5 7. Nf3 Nge7 8. cxd4 exd4 9. d3 Bg4 10. Bg5 Qxg5 11. Nxg5 Bxd1 12. Rxd1 a6 13. Bxc6+ Nxc6 14. f4 O-O 15. a3 a5 16. Nf5 a4 17. O-O {De Smet,K (2243)-Krutous,A (2080) ICCF 2012 0-1 (35)}) (5... h5 6. Nxh5 Nge7 7. d3 Qd6 8. Bd2 Ng6 9. h3 Be6 10. Ba4 O-O-O 11. Bb3 Kb8 12. Bxe6 Qxe6 13. a3 Nh4 14. Rh2 Qd6 15. Bg5 Be7 16. Bxh4 Bxh4 17. Nxg7 {Larsson,M (2400)-Dutra,A (2454) ICCF 2006 1-0 (70)}) (5... Nf6 6. N1e2 h5 7. Bxc6+ bxc6 8. h4 Rb8 9. d3 Ng4 10. c3 Qf6 11. f3 Ne3 12. Bxe3 dxe3 13. Qc2 g6 14. Nc1 a5 15. Nf1 g5 16. Nxe3 gxh4 17. Qf2 {De Smet,K (2194)-Simeonov,L (2046) ICCF 2008 0-1}) 6. d3 a6 (6... Be6 7. f4 Qd6 8. a4 exf4 9. N3e2 a6 10. Bxf4 Qd7 11. Bxc6 Nxc6 12. Nf3 O-O-O 13. O-O f6 14. Bg3 g5 15. Be1 a5 16. Kh1 Bg4 17. c3 dxc3 18. Bxc3 {Larsson,M (2270)-Mashchenko,V (2307) ICCF 2017 1/2 (57)}) (6... Qd6 7. Bc4 Na5 8. Bb5+ Nac6 9. Bd2 Be6 10. Nf3 f6 11. O-O O-O-O 12. Nh4 Qd7 13. b4 a6 14. Ba4 h5 15. Ngf5 Nxf5 16. exf5 Bxf5 17. Nxf5 Qxf5 18. b5 {Larsson,M (2323) -Marinov,P (2363) ICCF 2009 1-0 (47)}) 7. Ba4 Qd6 8. c3 Be6 9. Nf3 dxc3 10. bxc3 O-O-O 11. Bc2 f6 12. Be3 g5 13. Qc1 Ng6 14. O-O Qa3 15. d4 Bc4 16. Qxa3 Bxa3 {Azevedo,J (2285)-Bajt,D (2293) ICCF 2017 1/2 (41)}) (5. d3 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 Nge7 8. Nf3 h6 9. Be2 Qd6 10. O-O h5 11. Qg5 g6 12. c3 f6 13. Qc1 dxc3 14. bxc3 h4 15. Nh1 h3 16. gxh3 g5 {Feruglio,R-Attuati,L ICCF 2014 0-1 (37)}) 5... Na5 (5... Bd6 6. a3 (6. d3 Na5 7. Bb3 Nxb3 8. axb3 Ne7 9. N1e2 h5 10. O-O h4 11. Nh1 f5 {0-1 (11) Hansen,K (1868)-Steveson,B (2029) ICCF 2010}) 6... Qe7 (6... Rb8 7. Qf3 Nf6 8. d3 Bg4 {0-1 (8) Nielsen,J (2007)-Sørensen,M (2321) ICCF 2011}) 7. d3 Nf6 8. Nf3 Be6 9. Bxe6 fxe6 10. O-O O-O 11. c3 a5 12. cxd4 exd4 13. Ng5 h6 14. Nh3 Bxg3 15. hxg3 Nd7 16. g4 Nc5 17. g5 {Zdziech,M (1938)-Barbalic,Z (1989) ICCF 2020 1-0 (50)}) (5... Qf6 6. h3 (6. a3 Qg6 7. Qe2 (7. Qh5 Bd6 8. d3 Bg4 9. Qxg6 hxg6 10. c3 Nge7 11. N1e2 Bc5 12. O-O Bxe2 13. Nxe2 Rd8 14. Rd1 Kf8 15. Ba2 Bb6 16. c4 a5 17. Bb3 f5 18. Ba4 Kf7 {Herzog,K (2030)-Ryan,P (2291) ICCF 2007 1/2 (27)}) 7... h5 8. h4 Bg4 9. Nf3 Bd6 10. O-O Nge7 11. d3 Nd8 12. Bg5 Ne6 13. Bxe7 Kxe7 14. c3 Nf4 15. Qd1 dxc3 16. bxc3 Rhd8 17. Rb1 b6 {Haak,G (2137)-Lacrosse,M (2268) ICCF 2008 0-1 (43)}) 6... Be6 7. Bxe6 Qxe6 8. d3 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 h5 11. f4 Nge7 12. Nf3 Qg6 13. Qf2 exf4 14. Ne2 O-O-O 15. Nxf4 Qd6 16. Qd2 f5 17. O-O {Lloyd,G (2258)-Withey,R (2244) ICCF 2006 1/2 (25)}) 6. Bb5+ c6 7. Ba4 (7. Be2 Bd6 8. Bg4 (8. Nf3 c5 9. Bb5+ Kf8 10. c3 h5 11. h4 Bg4 12. Be2 g6 13. Ng5 Bxe2 14. Qxe2 Nc6 15. d3 Kg7 16. O-O Qd7 17. Qc2 Nh6 18. Ne2 Rac8 19. Bd2 Be7 {Larsson,M (2290)-Panitevsky, I ICCF 2013 0-1 (29)}) 8... c5 9. Bxc8 Rxc8 10. d3 Nf6 11. Nf3 O-O 12. O-O Re8 13. Nf5 Bf8 14. b3 Nc6 15. h3 Qd7 16. Nh2 g6 17. Ng3 Bg7 18. f4 exf4 {Esen,N (2428)-Susedenko,V (2364) ICCF 2014 1/2 (60)}) 7... b5 8. Bb3 Bd6 9. d3 Ne7 10. Nf3 O-O 11. O-O c5 12. Bd2 Nxb3 13. axb3 f6 14. h3 a5 15. Qe1 a4 16. bxa4 { Fuhr,M (2232)-Lukásová,A (2281) ICCF 2014 0-1 (77)}) (4... c5 5. Nf3 Bd6 6. Bc4 Nf6 (6... Bd7 7. d3 Nf6 8. O-O O-O 9. Bg5 h6 10. Bh4 b5 11. Bd5 Nc6 12. Nf5 Bxf5 13. Bxc6 Rc8 14. Bxb5 Be6 15. b3 Rb8 16. a4 Qe7 17. h3 Bc7 18. Qc1 { Palmiero,O (2219)-Frágola,H (1767) ICCF 2012 1-0}) 7. c3 (7. d3 Bg4 8. Bxf7+ Kxf7 9. Bg5 Qd7 10. O-O Rf8 11. h3 Be6 12. Nh4 Be7 13. Qf3 Kg8 14. Ngf5 Nc6 15. Nxe7+ Nxe7 16. Qe2 Rac8 17. f4 h6 18. Bxf6 gxf6 {Berger,B (1804)-McLaughlin,E (1515) ICCF 2020 0-1}) (7. O-O Nc6 8. c3 (8. d3 h6 9. Nh4 (9. c3 O-O 10. cxd4 exd4 11. h3 Be6 12. Bxe6 fxe6 13. Qb3 Qd7 14. Bd2 Rac8 15. Rae1 Bc7 16. Nh2 Bxg3 17. fxg3 Ne5 18. Nf3 c4 19. dxc4 Nxc4 20. Bb4 Rf7 {Aiken,R (1955)-Stubbs, M (1964) ICCF 2016 0-1 (41)}) 9... g6 10. Bd2 Ng8 11. Nf3 h5 12. Ng5 Nh6 13. h3 Qe7 14. Nf3 Be6 15. Bd5 Qd7 16. c4 h4 17. Nxh4 Ng8 18. Nf3 f6 19. Qb3 O-O-O { Baumann,W (2026)-Neri,E (1895) ICCF 2013 1-0 (40)}) 8... O-O 9. a3 Bd7 10. d3 a6 11. Ba2 b5 12. Bd2 Rb8 13. h3 dxc3 14. bxc3 h6 15. Qc1 Kh7 16. Be3 Rc8 17. a4 Rb8 18. axb5 axb5 {Wettering,G (2090)-Nett,P (1876) ICCF 2012 1/2 (30)}) 7... O-O 8. h3 (8. O-O Nbd7 9. d3 Nb6 10. Bb3 Bg4 11. h3 Bd7 12. a4 a5 13. Bd2 Qe8 14. Bg5 Kh8 15. Bxf6 gxf6 16. Nh4 Be6 17. Nhf5 Be7 18. cxd4 cxd4 19. Nh6 Qd7 {Taksrud,V (2089)-Øvergaard,J (1931) ICCF 2012 1-0 (48)}) (8. d3 Nc6 9. Bg5 (9. a3 h6 10. O-O Na5 11. Ba2 dxc3 12. bxc3 Re8 13. Nf5 Bxf5 14. exf5 Qd7 15. Nh4 Rad8 16. Qf3 Bb8 17. Qg3 e4 18. Qg6 c4 19. Qxf6 gxf6 20. dxc4 Be5 {Caputo, F-Romualdi,R (1846) ICCF 2020 0-1 (31)}) 9... h6 10. Bxf6 Qxf6 11. O-O Bg4 12. h3 {1-0 (12) Drost,R (1838)-Baumann,H (1961) ICCF 2016}) 8... Nc6 9. a3 Qa5 10. O-O h6 11. cxd4 exd4 12. d3 b5 13. Ba2 Qc7 14. Ne1 Be6 15. f4 Bxa2 16. Rxa2 { Graham,S-Drescher,A (1929) ICCF 2019 1-0 (45)}) (4... Bd6 5. Bc4 Ne7 (5... Nd7 6. d3 Ne7 7. Nf3 O-O 8. O-O a5 9. Ng5 Qe8 10. f4 Nf6 11. Nh5 b5 12. f5 Nxh5 13. Qxh5 h6 14. f6 bxc4 15. fxg7 Kxg7 16. Nxf7 Kg8 17. Nxh6+ {Henri,J (2338) -Figueiras,J (2317) ICCF 2006 1-0 (63)}) (5... c5 6. d3 Nc6 7. h3 b5 8. Bb3 Nf6 9. a4 Na5 10. axb5 Nxb3 11. cxb3 Qb6 12. Nf3 Qxb5 13. Bg5 Nd7 14. O-O f6 15. Bd2 Qxd3 16. Ra5 Rb8 17. b4 {Zdziech,M (1938)-Bogdan,K (2040) ICCF 2020 1-0 (29)}) 6. d3 Nbc6 7. Qh5 O-O 8. Nf3 Bb4+ 9. Kf1 Qd6 10. a3 Ba5 11. b4 Bb6 12. b5 Na5 13. Nxe5 Be6 14. Bxe6 fxe6 15. Nf3 a6 16. a4 {Manarin,F (1655)-Bigras,R ICCF 2008 1-0 (29)}) (4... Qf6 5. c3 Nc6 6. b4 a6 7. Nf3 h5 8. h4 Bg4 9. Qa4 Bxf3 10. gxf3 Ra7 11. Bb2 (11. Rb1 Nge7 12. b5 axb5 13. Qxb5 Ng6 14. Nf5 Bd6 15. a4 O-O 16. Rg1 Nxh4 17. Rxg7+ Kh8 18. Rg3 Nxf5 19. exf5 Rfa8 20. Rg1 Ra5 21. Qxb7 Rb8 22. Qxb8+ Nxb8 {Doorn,J (2223)-Wydornik,R (2070) ICCF 2007 0-1 (48)}) 11... Qxf3 12. cxd4 Nf6 13. Be2 Qf4 14. Qc2 exd4 15. b5 Nb4 16. Qa4 { Lacrosse,M (2218)-Wallner,J (2328) ICCF 2006 1-0 (43)}) (4... Bb4 5. Nf3 Nf6 6. Nxe5 a6 7. c3 dxc3 8. bxc3 Bd6 9. f4 Bxe5 10. fxe5 Ng4 11. Be2 Nxe5 12. d4 Ng6 13. Ba3 Ne7 14. Bc4 O-O 15. O-O Nbc6 16. Bxf7+ {Larsson,M (2302)-Lanca,L (1501) ICCF 2018 1-0}) (4... g6 5. Bc4 Bg7 6. d3 Nc6 (6... Nf6 7. f4 Bg4 8. Nf3 Bxf3 9. Qxf3 Nbd7 10. a4 Qe7 11. O-O c6 12. c3 O-O 13. cxd4 exd4 14. e5 Nd5 15. b3 N7b6 16. Ba3 c5 17. Bxd5 Nxd5 18. Qxd5 {Relyea,A (2128)-Vila Nova,R (1346) ICCF 2015 1-0 (35)}) 7. c3 dxc3 8. bxc3 Na5 9. Bb5+ c6 10. Ba4 Qd6 11. Nf3 Ne7 12. Rb1 O-O 13. O-O Bg4 14. h3 Be6 15. Qe2 b5 16. Bc2 {Maruhn,R (2232) -Filipovich,A (1880) ICCF 2006 1-0 (51)}) (4... Ne7 5. Bc4 Ng6 6. d3 Nc6 7. Nf3 Bb4+ 8. Bd2 Bxd2+ 9. Qxd2 Bg4 10. Ng5 O-O 11. h3 Bd7 12. Ne2 Qf6 13. Nf3 a6 14. a3 h6 15. b4 b5 16. Bd5 {Nielsen,J (2048)-Nierobisz,J (2402) ICCF 2005 0-1 (45) }) (4... Nd7 5. Nf3 g6 6. Bc4 f6 7. c3 Nb6 8. cxd4 Bg4 9. Bb3 exd4 10. h3 Bxf3 11. Qxf3 d3 12. e5 Qe7 13. O-O O-O-O 14. Bxg8 Rxg8 15. exf6 Qf7 16. Ne4 { McNeil,M (1927)-Setya Adhi,B ICCF 2017 1-0}) 5. Bc4 (5. Nf3 Bd6 6. Nf5 Bxf5 7. exf5 Qd7 8. Qe2 Nc6 9. c3 d3 10. Qxd3 e4 {0-1 (10) Berger,B (1804)-Greco,T ICCF 2020}) 5... Bd6 (5... Nc6 6. Nf3 (6. a3 Bd6 (6... h5 7. d3 h4 8. N3e2 Bg4 9. h3 Bh5 10. Nf3 Be7 11. Bd2 a6 12. g4 Bg6 13. c3 Nxe4 14. dxe4 Bxe4 15. Nc1 Bd5 16. Bxd5 Qxd5 17. O-O O-O-O 18. Na2 {Perina,G (2228)-Cosentino,A (1918) ICCF 2011 1-0 (37)}) 7. d3 O-O 8. Bd2 a6 9. Nf3 b5 10. Bb3 a5 11. a4 b4 12. O-O Bg4 13. Rc1 Qe7 14. h3 Be6 15. Nh4 Qd7 16. Bg5 Be7 17. Nhf5 h6 {Herzog,K (1993) -Geus,J (1958) ICCF 2006 1-0 (41)}) (6. d3 Be7 7. f4 O-O 8. Nf3 Be6 9. Bxe6 fxe6 10. fxe5 Ng4 11. h3 Ngxe5 12. Nxe5 Nxe5 13. Rf1 Rxf1+ 14. Kxf1 Qf8+ 15. Kg1 Bh4 16. Kh2 Qf2 17. Nh5 Rf8 {Berger,B (1584)-Williams,R (1034) ICCF 2019 0-1}) 6... h6 (6... Bd6 7. a3 (7. c3 O-O 8. b4 (8. O-O Na5 9. Be2 c5 10. d3 Nc6 (10... Re8 11. Qc2 Bd7 12. Nh4 g6 13. Bg5 Rc8 14. Qd2 Nc6 15. f4 exf4 16. Rxf4 Be7 17. Rf2 Ng4 18. Bxe7 Qxe7 19. Bxg4 Bxg4 20. Nf3 Bxf3 21. gxf3 Ne5 22. f4 { Torgersen,T (2010)-Sjøl,H (2244) ICCF 2008 0-1 (53)}) 11. Qc2 h6 12. Bd2 Be6 13. Nh4 dxc3 14. bxc3 b5 15. Nhf5 Rc8 16. Nxd6 Qxd6 17. f4 b4 18. Nf5 Bxf5 19. fxe5 Nxe5 {Manarin,F (1655)-Bourgoin,C (1883) ICCF 2008 0-1 (28)}) 8... a6 9. O-O (9. Bb2 Bg4 10. h3 Bc8 11. O-O Qe7 12. a3 Be6 13. Qe2 Rfe8 14. Bd3 Bd7 15. Rfe1 Rad8 16. a4 dxc3 17. dxc3 {1-0 (17) Henri,J (2386)-Sen,A (1678) ICCF 2009} ) 9... Qe7 10. Bb2 Be6 11. Qb3 Bxc4 12. Qxc4 dxc3 13. dxc3 g6 14. h3 Nd8 15. a4 Ne6 16. Bc1 Kg7 17. Be3 Rfd8 18. Rfd1 Nf4 {Nielsen,J (1983)-Pontoppidan,E (2077) ICCF 2009 1-0 (52)}) (7. O-O Na5 8. Bb5+ c6 9. Be2 O-O 10. d3 c5 11. Nh4 g6 12. Nf3 Nc6 13. c3 Re8 14. Bg5 Be6 15. Bh6 Bf8 16. Bxf8 Rxf8 17. Qd2 Qd6 18. Qg5 Ne8 {Justesen,A (2183)-Plant,K (2212) ICCF 2009 1-0}) 7... O-O (7... h6 8. d3 Qe7 9. O-O Be6 10. Bxe6 Qxe6 11. Nf5 O-O 12. Qe1 Kh7 13. c3 dxc3 14. bxc3 Ne7 15. N3h4 Rfd8 16. Rb1 Nxf5 17. Nxf5 Bc5 18. Qe2 b6 19. Kh1 {Tosi,F (2411) -Stocker,N ICCF 2007 1/2 (55)}) 8. d3 h6 (8... Na5 9. Ba2 c5 10. O-O Nc6 { 0-1 (10) Ramírez,A (2354)-Pansier,P (2224) ICCF 2002}) 9. Qe2 (9. h3 Be6 10. Bxe6 fxe6 11. O-O Qe7 12. Bd2 a5 13. Nh2 a4 14. Nh5 Nb8 15. Nxf6+ Qxf6 16. Qg4 Nd7 17. Rab1 b5 18. Nf3 c5 19. c3 Rab8 20. Rbc1 Kh7 {Fuhr,M (2160)-Petters Merino,O (2153) ICCF 2015 1-0 (37)}) 9... Ne7 10. h3 a5 11. Nh4 Qd7 12. O-O b5 13. Ba2 Qc6 14. Qf3 Nh7 15. Nh5 g6 16. Bxh6 gxh5 17. Bxf8 Be6 18. Bh6 {Fuhr,M (2249)-Randolph,D (1992) ICCF 2012 1-0 (28)}) (6... Na5 7. Be2 Qd6 8. d3 h6 9. Bd2 Nc6 10. c3 Be7 11. Nf5 Bxf5 12. exf5 O-O 13. cxd4 exd4 14. Qb3 Nd5 15. a3 Rfe8 16. O-O Nf4 17. Bxf4 Qxf4 18. Qxb7 {Berger,B-Miller,A ICCF 2014 0-1 (27)}) (6... Bc5 7. O-O (7. h3 Be6 8. Qe2 Qe7 9. Bb5 O-O 10. Bxc6 bxc6 11. Nxe5 Bd7 12. Nxd7 Qxd7 13. O-O Rad8 14. d3 Qe6 15. b3 Nd7 16. Bb2 f5 17. exf5 Qxe2 18. Nxe2 Rxf5 {Fuhr,M (2249)-Potter,C (1592) ICCF 2012 1-0 (32)}) 7... O-O 8. d3 Qd6 9. Nh4 Bg4 10. Qd2 Be6 11. Bb3 Qd8 12. Nhf5 Kh8 13. Qg5 Rg8 14. Qh4 Nd7 15. Bg5 Qe8 16. Ne2 Rf8 17. Bxe6 Qxe6 18. Bd2 {Kokorin,V (2177)-Pettersson,R (2064) ICCF 2013 1-0 (58)}) (6... Bg4 7. d3 Be7 8. O-O O-O 9. a3 Na5 10. Ba2 Rc8 11. h3 Bh5 12. Nxh5 Nxh5 13. Nxe5 c5 14. Qxh5 {1-0 (14) Rouse,L-Ong,A (1264) ICCF 2020}) 7. O-O Bd6 8. c3 O-O 9. b4 (9. h3 Na5 10. Bd3 c5 11. b4 Nc6 12. b5 Na5 13. Ba3 Re8 14. Qa4 b6 15. Rfe1 Bc7 16. Rac1 a6 17. bxa6 Bxa6 18. Bxa6 Rxa6 19. Bb2 Qd7 20. Qxd7 Nxd7 {Baumann,W (1849)-Sueess,F (2250) ICCF 2011 1/2 (60)}) ( 9. d3 Na5 10. cxd4 Nxc4 11. dxc4 Bg4 12. c5 Be7 13. dxe5 Nd7 14. c6 bxc6 15. Nf5 Bg5 16. Qd4 c5 17. Qc3 Bxf3 18. gxf3 g6 19. Nxh6+ Kh7 20. Ng4 Bxc1 { Nielsen,J (1954)-Bortnik,M (1970) ICCF 2005 1-0 (28)}) 9... a6 10. Bb2 Qe7 11. cxd4 exd4 12. Nxd4 Nxd4 13. Bxd4 Bxb4 14. Rb1 Bc5 15. Bxc5 Qxc5 16. Qc1 Qe5 17. Qb2 {Aasum,A (2134)-Krause,M (2118) ICCF 2010 0-1 (41)}) (5... c5 6. Nf3 Bg4 7. Bxf7+ Ke7 8. Nxe5 Qc8 9. Nxg4 Qxg4 10. Qxg4 Nxg4 11. Bb3 g6 12. f3 Ne5 13. d3 h6 14. f4 Ng4 15. h3 Nf6 16. f5 g5 17. e5 {Berger,B-Echevarría González,R ICCF 2019 1-0}) (5... c6 6. Nf3 Bd6 7. d3 a5 8. a4 Na6 9. O-O Nc7 10. Bg5 h6 11. Bd2 Be6 12. Bxe6 Nxe6 13. Nf5 Qc7 14. Nxd6+ Qxd6 15. h3 c5 16. Qe2 b6 17. b3 { Schmidt,A (1868)-Pajukari,S (1785) ICCF 2017 0-1 (28)}) (5... Be7 6. Nf3 Nc6 7. O-O h6 8. c3 Bd7 9. cxd4 exd4 10. d3 Bg4 11. h3 Bxf3 12. Qxf3 Qd7 13. Bb5 a6 14. Bxc6 Qxc6 15. Bf4 Qb6 16. Rac1 c5 17. Nf5 {Kokorin,V (2177)-Lanca,L (1637) ICCF 2013 1-0 (26)}) (5... h5 6. h4 Bg4 7. f3 Bd7 8. d3 b5 9. Bb3 a5 10. a4 Bb4+ 11. Bd2 bxa4 12. Bxa4 Bxa4 13. Rxa4 Nc6 14. c3 Bc5 15. Qc2 dxc3 16. bxc3 Nd7 17. N1e2 {Haak,G (2195)-Nielsen,P (1850) ICCF 2009 1-0 (40)}) (5... Bc5 6. Nf3 Ng4 7. h3 Nf6 8. Nxe5 Nc6 9. Nxf7 Qd7 10. Nxh8 Bd6 11. Nh5 Nxe4 12. O-O Qf5 13. Nxg7+ {1-0 (13) Berger,B-Anderson,L (895) ICCF 2019}) 6. Nf3 (6. d3 Nc6 ( 6... O-O 7. Bd2 Nbd7 8. Nf3 Nb6 9. Bb3 a5 10. a3 Nbd7 11. O-O Nc5 12. Ba2 Be6 13. Bxe6 Nxe6 14. Ng5 h6 15. Nh3 Re8 16. Nf5 Ra6 17. f4 h5 18. Qf3 {Nielsen,J (1998)-Benetti,P (1980) ICCF 2014 1/2 (53)}) 7. Nf3 Na5 8. O-O Nxc4 9. dxc4 b6 10. Nxe5 Bxe5 11. f4 Bg4 12. Qd2 Bd6 13. e5 O-O 14. exf6 Qxf6 15. Ne4 Qd8 16. Nxd6 Qxd6 17. f5 Rfe8 {Vorontsov,G-Randolph,D (1955) ICCF 2011 1-0}) (6. c3 O-O 7. Nf3 Nbd7 8. O-O Nb6 9. Be2 Bg4 10. cxd4 exd4 11. d3 c6 12. Ne1 Bxe2 13. Nxe2 Re8 14. f4 Ng4 15. h3 Ne3 16. Bxe3 dxe3 17. Rf3 Bb4 {Nielsen,J (2048)-De la Fuente Álvarez,C ICCF 2005 1-0 (68)}) 6... O-O (6... h6 7. O-O O-O 8. c3 c5 9. d3 Bd7 10. Nh4 Ng4 11. Nhf5 Bxf5 12. Nxf5 Nf6 13. Bxh6 gxh6 14. Qd2 Nh7 15. Qxh6 Qg5 16. Qxd6 Nf6 17. Qxe5 Nbd7 18. Ne7+ {Wyder,B (1678)-Knox,A (1819) ICCF 2006 1-0}) 7. O-O (7. d3 c5 (7... Nbd7 8. O-O Nc5 9. b4 Na4 10. b5 Bd7 11. Bd2 Nb2 12. Qe2 Nxc4 13. dxc4 Re8 14. c3 c5 15. bxc6 Bxc6 16. Qd3 Rb8 17. a4 a6 18. Rfe1 dxc3 19. Bxc3 {Drost,R (1924)-Allisson,F ICCF 2014 1-0 (41)}) (7... h6 8. O-O c5 (8... Re8 9. c3 c5 10. Nh4 Nc6 11. Nhf5 Bf8 12. f4 a6 13. Bb3 Be6 14. fxe5 Nxe5 15. cxd4 cxd4 16. Bf4 Ng6 17. Bd2 Rc8 18. Rc1 Rxc1 19. Bxc1 Nd7 20. Ba4 {Rybák,M (2434)-Romm,M (2453) ICCF 2012 1/2 (28)}) (8... Be6 9. Bxe6 fxe6 10. c3 dxc3 11. Qb3 Qe7 12. Qxb7 Nbd7 13. bxc3 Nc5 14. Qb1 Rab8 15. Qc2 a5 16. Be3 Ng4 17. Bxc5 Bxc5 18. d4 exd4 19. cxd4 Bb4 20. e5 {Bailey,S (2051) -Mill-Wilson,G (1319) ICCF 2019 1-0 (26)}) 9. Nh4 Nc6 10. Ngf5 Na5 (10... Bxf5 11. Nxf5 Kh7 12. Qf3 Ng8 13. Qg4 g6 14. Nxd6 Qxd6 15. f4 h5 16. Qg3 Rae8 17. f5 Nce7 18. Qh4 Nf6 19. h3 Kg7 20. Qg5 Rh8 21. fxg6 fxg6 22. Bd2 {Ackermann, B-Bellisario,C (1296) ICCF 2017 1-0 (33)}) 11. Qf3 Nxc4 12. Bxh6 Bxf5 13. Nxf5 g6 14. dxc4 Re8 15. Ng7 Rf8 16. a4 Rc8 17. Ra3 Rc6 18. Nf5 {1-0 (18) Justesen, A (2000)-Vialet,T ICCF 2010}) (7... Nc6 8. Bd2 Qe7 9. O-O Be6 10. Bxe6 fxe6 11. c3 h6 12. cxd4 exd4 13. Nh4 Kh7 14. f4 Bb4 15. Bxb4 Qxb4 16. Qe2 Ne7 17. Rac1 c6 18. Nf3 Ng6 19. Rc4 {Ormsby,A (2074)-Tibbert,P (1784) ICCF 2012 1-0 (40)}) ( 7... Bg4 8. O-O c5 9. h3 Bd7 10. Bg5 h6 11. Bxf6 Qxf6 12. Nh5 Qe7 13. Qd2 Kh7 14. Bd5 Nc6 15. Nh2 Qh4 16. Ng3 g6 17. Nf3 Qf6 18. Nh2 Kg7 19. Bc4 {Esposito,L (1640)-Nilsson,E (1785) ICCF 2017 1/2 (38)}) 8. h3 b5 9. Bb3 Qc7 10. Qe2 Nbd7 11. O-O Nb6 12. a3 Re8 13. Ba2 c4 14. b3 a5 15. bxc4 bxc4 16. Bg5 Nfd7 17. Nf5 Bf8 18. Rfb1 Ba6 {Fuhr,M (2149)-Sorokin,V ICCF 2017 0-1 (53)}) (7. a4 Nc6 8. O-O a5 9. c3 h6 10. h3 Nd7 11. d3 Nc5 12. Bd2 Bd7 13. b4 axb4 14. cxb4 Ne6 15. a5 Qf6 16. b5 Na7 17. Rb1 Rfb8 18. Nh5 Qe7 {Vandermeulen,B (2568)-Detela,W (2243) ICCF 2012 1-0 (28)}) 7... c5 (7... Nc6 8. a3 Bg4 (8... Nd7 9. c3 Nb6 10. Ba2 Qf6 11. h3 Rd8 12. d3 dxc3 13. Bg5 Qg6 14. bxc3 Rd7 15. a4 h6 16. Be3 Rd8 17. Nh4 Qf6 18. Nhf5 Bf8 19. f4 Bxf5 20. fxe5 {Kokorin,V (2161)-Vorontsov,G ICCF 2012 1-0 (34)}) (8... a6 9. d3 Na5 10. Ba2 Bg4 11. h3 Bd7 12. Bg5 Nc6 13. Nf5 Bxf5 14. exf5 h6 15. Bh4 Qe7 16. Bd5 Na7 17. Re1 c6 18. Bb3 c5 19. Nh2 e4 20. Ng4 {Nielsen,J (1979)-Sileika,A (1678) ICCF 2016 1-0 (26)}) 9. h3 Be6 10. Bxe6 fxe6 11. b4 a5 12. b5 Na7 13. a4 c5 14. c3 Nc8 15. Qb3 Re8 16. d3 Nb6 17. cxd4 cxd4 18. Ba3 Rc8 19. Rac1 {Kokorin,V (2231)-Øvergaard,J (1951) ICCF 2011 1/2 (43)}) (7... Qe7 8. d3 Be6 9. Bxe6 Qxe6 10. Nf5 Rd8 11. c3 c5 12. Bg5 Nc6 13. Qc2 Rac8 14. Nxd6 Qxd6 15. Rfd1 b6 16. b3 Rd7 17. a3 a5 18. Rd2 Ne8 19. Re1 {Drost,R (1924)-Hoffmann,P (1927) ICCF 2014 0-1 (32)}) 8. d3 Nc6 9. Bd2 (9. a3 a6 (9... Rb8 10. h3 (10. Nh4 Bg4 11. f3 Be6 12. Nhf5 Bxc4 13. dxc4 Ne8 14. Qd3 Bc7 15. Rb1 Nd6 16. Bd2 a6 17. Qe2 b5 18. cxb5 axb5 19. f4 Nc4 20. Bc1 Kh8 21. fxe5 N4xe5 {Bas Fortuny,M (2114)-Ribés Colom,J ICCF 2007 0-1 (39)}) 10... b5 11. Ba2 Be6 12. Bxe6 fxe6 13. a4 b4 14. b3 Qe8 15. Qe2 Qg6 16. Ng5 Rbe8 17. Bd2 h6 18. Nf3 Nd7 19. Nh4 Qf7 20. Rad1 Bc7 21. Bc1 {Foster,K (2283)-Mandviwala,P (2240) ICCF 2010 1/2 (33)}) (9... h6 10. Qe2 Re8 11. Nh4 Be6 12. Nhf5 Bxc4 13. dxc4 Bf8 14. Bd2 {1/2 (14) Fuhr,M (2160)-Furashev,V (2355) ICCF 2015}) 10. h3 b5 11. Ba2 Be6 12. Qe2 Bxa2 13. Rxa2 g6 14. Bg5 Qe7 15. b3 Qe6 16. Bd2 Rfc8 17. Rfa1 Nd7 18. a4 Rab8 19. axb5 axb5 20. Ng5 Qe8 {Fuhr,M (2160)-Moskalyov,V (2288) ICCF 2015 1/2 (35)}) (9. a4 Bd7 (9... Na5 10. Ba2 Nc6 11. Bd2 Bd7 12. Nh4 Bg4 13. Qe1 Nb4 14. Bxb4 cxb4 15. Nhf5 Bxf5 16. Nxf5 g6 17. Nxd6 Qxd6 18. a5 Rfe8 19. Qd2 Kg7 20. Bb3 b5 21. f4 {Kokorin,V (2358)-Jans,A (1844) ICCF 2010 1-0 (42)}) (9... Re8 10. Bd2 h6 11. h3 Be6 12. Bxe6 Rxe6 13. Nf5 Bf8 14. b3 Ne7 15. Re1 Nc6 16. Kh1 b6 17. Qe2 Nh7 18. Nh2 Ne7 19. Qg4 Rg6 20. Qf3 Nc6 21. h4 {Allmer,C-Savio,G ICCF 2012 1-0 (49)}) (9... Bc7 10. Qe2 a6 11. Bg5 h6 12. Bd2 Rb8 13. Nh4 Bg4 14. f3 Be6 15. Bxe6 fxe6 16. Ng6 Rf7 17. f4 exf4 18. Bxf4 Bxf4 19. Rxf4 Qc7 20. Raf1 Ne5 21. Nxe5 {Henri,J (2328)-Gala,K (1907) ICCF 2010 1/2 (51)}) (9... h6 10. Nh4 Bg4 11. Qd2 Ne7 12. h3 Be6 13. b3 Kh7 14. Qe2 Bc7 15. Nh5 Nc6 16. Nf5 Nxh5 17. Qxh5 Qf6 18. Bxe6 fxe6 19. Nh4 Nb4 20. Bd2 Bd6 21. Rac1 {Popov,O-Tsirakovsky,S (2231) ICCF 2018 1-0 (60)}) (9... Be6 10. Bxe6 fxe6 11. Bd2 b6 (11... Qd7 12. Qb1 Ne8 13. a5 Be7 14. Ne2 Nd6 15. c4 Rf7 16. Qd1 Rb8 17. Qa4 Ne8 18. Ne1 Nc7 19. Nc2 Na6 20. Nc1 Rbf8 21. f3 Qd8 22. Nb3 Bg5 23. Bxg5 {Baranyuk,A (2226)-Manaenkov,V (2349) ICCF 2010 0-1 (54)}) 12. Qb1 Kh8 13. Qa2 Qe7 14. Rfe1 Rac8 15. h3 Ne8 16. Nh2 Nc7 17. c3 Qf7 18. Nf3 Rcd8 19. Qb3 Be7 20. Qc2 Qg6 21. a5 {Baffo,J (2113)-Johnson,K (1798) ICCF 2015 1-0 (30)}) 10. Bd2 {1/2 (10) Riihimäki,V (2036)-Fasser,W (2099) ICCF 2013}) (9. Bg5 h6 {0-1 (9) Nacer,A-Khan,S (2038) ICCF 2009}) 9... Na5 (9... Bd7 10. a3 h6 11. Nh4 Ne7 12. h3 Be6 13. b3 Qd7 14. a4 Kh7 15. Kh2 g5 16. Nh5 Neg8 17. Nxf6+ Nxf6 18. Nf3 Rg8 19. Bxe6 Qxe6 20. g4 Rg6 21. Ng1 {Wettering,G (1782)-Aukstuolis,A (1830) ICCF 2007 1-0 (105)}) 10. Bxa5 Qxa5 11. a4 g6 12. c3 Kg7 13. Qd2 h6 14. b4 cxb4 15. cxd4 exd4 {Larsson,M (2286)-Saxena,A (2258) ICCF 2015 1/2 (51)}) ( 4. c3 Nf6 (4... c5 5. Ng3 Nc6 (5... Bd6 6. cxd4 cxd4 7. Bc4 Nf6 8. Nf3 O-O 9. O-O Bd7 10. a4 Nc6 11. d3 Bb4 12. Bd2 Bxd2 13. Qxd2 Bg4 14. Nh4 Nxe4 15. Nxe4 Qxh4 16. b4 Nd8 17. f4 {Hale,A (1952)-Glozman,A ICCF 2016 1/2}) (5... Nf6 6. Nf3 Nc6 7. Bb5 Bd6 8. d3 O-O 9. O-O Na5 10. b4 a6 11. bxc5 Bxc5 12. cxd4 Bxd4 13. Nxd4 Qxd4 14. Be3 Qd6 15. Ba4 b5 16. Bc2 Be6 17. Rc1 {Hale,A (2001)-Sorbi, L (1934) ICCF 2016 1-0 (92)}) 6. Bc4 Nf6 7. d3 h6 8. Nf3 Bd6 9. Nh4 O-O 10. Ngf5 Be7 11. O-O Kh7 12. f4 Be6 13. Bxe6 fxe6 14. Nxe7 Qxe7 15. f5 exf5 16. Nxf5 {Graham,S-Mehlhorn,I (1842) ICCF 2019 1/2}) (4... Bc5 5. Nf3 Be6 6. Nxe5 Qd6 7. Qa4+ c6 8. cxd4 Bb6 9. b3 Nf6 10. f3 Na6 11. Ba3 Qc7 12. Rc1 Rd8 13. Nxc6 Bd7 14. Nxd8 Qxd8 15. Qc4 Nc7 16. Nc3 {Wyder,B (1909)-Flury,R ICCF 2008 1-0 (25)}) 5. Ng3 h5 6. h4 Bg4 (6... Bc5 7. b4 Bb6 8. Bb5+ Kf8 9. Nf3 dxc3 10. O-O Ng4 11. a4 a6 12. Bc4 cxd2 13. Ba3 g6 14. Ra2 Kg7 15. Rxd2 Qf6 16. Ng5 Qf4 17. Qf3 f6 18. Qxf4 {Hale,A (2001)-Herman,T (1988) ICCF 2016 1/2 (36)}) 7. Qb3 Nfd7 8. Bc4 Qf6 9. cxd4 Nc6 10. Bxf7+ Qxf7 11. Qxb7 Nd8 12. Qxa8 Nb6 13. Qxa7 Nc6 14. Qa6 Nb4 15. Qb5+ c6 {Chatel,M (1657)-González Sánchez,F (2284) ICCF 2017 0-1 (119)}) (4. d3 c5 (4... Nc6 5. Bd2 Nf6 6. Nf3 Bg4 (6... Be6 7. c3 dxc3 8. Nxc3 Bg4 9. Be3 Bxf3 10. Qxf3 Nd4 11. Qd1 c6 12. Be2 Bc5 13. O-O O-O 14. Na4 Nxe2+ 15. Qxe2 Bxe3 16. Qxe3 Qa5 17. Nc5 b6 18. Nb3 {Pradeilles,G-Meller,E (1906) ICCF 2018 0-1 (63)}) 7. Ng3 Bd6 8. Nf5 Bxf5 9. exf5 e4 10. dxe4 Nxe4 11. Bb5 O-O 12. Bxc6 bxc6 13. Nxd4 Re8 14. Be3 c5 15. Ne2 Qh4 16. Qd5 {Towery,B (1658)-Nurmi,R (1888) ICCF 2017 1/2 (35)}) (4... Nf6 5. Nf3 Bd6 6. h3 Nc6 7. Bg5 h6 8. Bh4 g5 9. Bg3 Nh5 10. Bh2 Bd7 11. c3 Nf4 12. Nxf4 gxf4 13. Qd2 Qf6 14. O-O-O dxc3 15. bxc3 Ba3+ 16. Kb1 {Olsen,S (1682)-Laguerta,C (1592) ICCF 2017 0-1 (28)}) (4... f6 5. f4 Nc6 6. f5 Bd7 7. Nf3 Qe7 8. c3 O-O-O 9. cxd4 exd4 10. Nexd4 Nxd4 11. Nxd4 Qb4+ 12. Qd2 Qxd4 13. a3 Bxa3 14. Rxa3 Bc6 15. Qc3 Qb6 16. g4 {Gunning,E-Graupera,C (1479) ICCF 2018 1-0}) 5. Nf3 (5. f4 Nc6 (5... f6 6. g3 Nc6 7. Bg2 Bd6 8. Nf3 Nge7 9. O-O O-O 10. f5 Bd7 11. g4 h6 12. h4 Qb6 13. Ng3 c4 14. g5 hxg5 15. hxg5 Qb5 16. g6 Rfc8 17. Ng5 {Henri,J (2275)-Khan,S (2075) ICCF 2012 1-0 (50)}) 6. Nf3 Bd6 7. fxe5 Nxe5 8. Nxe5 Bxe5 9. Bf4 f6 10. Qd2 Ne7 11. Ng3 Ng6 12. Nh5 Qc7 13. Bg3 Bg4 14. Bxe5 fxe5 15. Be2 Bxe2 16. Qxe2 O-O {Volkov,I-Astroukh,V ICCF 2017 0-1 (38)}) (5. g3 f6 (5... Nc6 6. Bg2 Bd6 7. f4 Nf6 8. Nf3 O-O 9. O-O h6 (9... Re8 10. h3 exf4 11. Nxf4 h6 12. Nd2 Ne5 13. a4 Bd7 14. b3 g5 15. Nh5 Re6 16. Nf4 gxf4 17. gxf4 Nc6 18. e5 Nd5 19. Nc4 Rg6 20. Qh5 Bc7 21. f5 {Henri,J (2329)-Glazman,M (2545) ICCF 2009 0-1 (58)}) (9... exf4 10. gxf4 Be7 11. Ng3 Re8 12. h3 Nd7 13. c3 h6 14. a4 a5 15. Kh2 Ra6 16. e5 Nf8 17. f5 Rb6 18. Rf2 Nh7 19. f6 Bf8 20. cxd4 Nxd4 21. fxg7 {Henri,J (2266) -Saxena,A (2232) ICCF 2010 1/2 (57)}) 10. h3 exf4 11. gxf4 Bc7 12. c3 dxc3 13. bxc3 Be6 14. Qc2 Re8 15. Ne1 b5 16. Rb1 Rb8 17. Be3 {Arango Pérez,L (2065) -Reed,A (1977) ICCF 2011 0-1 (28)}) 6. Bg2 Nc6 7. a3 Be6 8. f4 Bd6 9. Nf3 h6 10. Bd2 Nge7 11. b3 Qd7 12. f5 Bf7 13. g4 O-O-O 14. Ng3 Kb8 15. Nh5 Rhg8 16. Nh4 Bc7 {Azevedo,J (2331)-Pinchon,F (2292) ICCF 2014 0-1 (70)}) 5... Nc6 6. c3 (6. Ng3 h5 (6... Nf6 7. Be2 Be7 8. O-O O-O 9. Bd2 Qb6 10. Rb1 Ne8 11. a3 Nd6 12. c4 a5 13. Ne1 Qd8 14. Bg4 Bg5 15. Bxc8 Rxc8 16. Bxg5 Qxg5 17. Nf3 Qe7 18. h4 {Taksrud,V (2035)-Raidaru,M (2385) ICCF 2009 1/2 (34)}) 7. h4 g6 8. Be2 Nh6 9. O-O Be7 10. Bg5 f6 11. Bxh6 Rxh6 12. Qd2 Rh8 13. c3 a5 14. a3 Be6 15. Bd1 a4 16. cxd4 cxd4 17. Bc2 b5 {Ferreira,L (1892)-Morihama,N (2314) ICCF 2020 0-1 (33)}) (6. Bd2 Nf6 7. Ng3 Bg4 8. Be2 Qb6 9. Rb1 Be7 10. O-O O-O 11. Nxd4 Bxe2 12. Ndxe2 Nd4 13. Nxd4 exd4 14. e5 Nd5 15. c4 Nb4 16. Bxb4 cxb4 17. f4 Qa5 { De Moor,G-Ong,A (1670) ICCF 2016 1-0 (32)}) 6... Nf6 7. Ng3 Bd6 8. Be2 O-O 9. O-O Be6 10. c4 h6 11. a3 a6 12. Bd2 Qd7 13. Rb1 b5 14. b3 Rab8 15. Nh4 bxc4 { Tsang,K-Hasidume,S (2207) ICCF 2007 0-1}) (4. g3 h5 5. h3 h4 6. g4 g5 7. d3 c5 8. Nf3 f6 9. Nh2 Nc6 10. Bd2 Nge7 11. f3 Be6 12. Kf2 Ng6 13. c4 dxc3 14. bxc3 Rh7 15. Qc2 Rd7 {Beday,A (2029)-Tolstik,A (2288) ICCF 2020 0-1}) 4... f6 (4... Nc6 5. Ng3 (5. h3 Be6 6. Ng3 f6 7. Bb5 Qd7 8. c3 (8. d3 a6 9. Ba4 O-O-O 10. a3 h5 11. b4 Kb8 12. Rb1 Nge7 13. b5 axb5 14. Bxb5 h4 15. Ne2 Nc8 16. Bd2 Bxa3 17. c3 dxc3 18. Nxc3 Qd6 19. O-O Nb6 {Vandermeulen,B (2568)-Maia,J (2456) ICCF 2012 0-1 (61)}) 8... d3 9. O-O a6 10. Ba4 Nge7 11. b4 h5 12. Ne1 h4 13. Nh1 Ng6 14. Bb3 Nd8 15. Bxe6 Nxe6 16. f3 a5 {Fuhr,M (2217)-Genga,S (2409) ICCF 2014 0-1 (36)}) (5. d3 Bg4 (5... Nf6 6. a3 Be6 7. h3 Be7 8. Ng5 Qd7 9. Bd2 h6 10. Nxe6 Qxe6 11. g3 g5 12. Bg2 O-O-O 13. b4 a6 14. Rb1 h5 15. Bxg5 Nd7 16. Bd2 Na7 17. O-O {Vera,M-Riley,K (1462) ICCF 2017 1-0}) (5... h6 6. Bd2 Bg4 7. Ng3 Qf6 8. Be2 Bb4 9. Bxb4 Nxb4 10. a3 Bxf3 11. Bxf3 Nc6 12. O-O O-O-O 13. b4 Qg5 14. Qb1 Kb8 15. a4 Qe7 16. b5 Na5 17. Nf5 {Smiley,W (1906)-Strelecky,R ICCF 2015 1/ 2 (43)}) 6. Ng3 Be7 7. h3 Be6 8. Be2 Nf6 9. O-O h6 10. Nh4 g6 11. f4 Qd7 12. c4 Bxh3 13. f5 g5 14. Nf3 Bg4 15. a3 O-O-O 16. b4 Rdg8 {Rouillard,S-Moueza,O ICCF 2007 0-1 (27)}) 5... h5 (5... Nf6 6. Bb5 Bd6 7. c3 (7. Bxc6+ bxc6 8. d3 O-O 9. O-O Be6 10. b3 Rb8 11. Qe2 Re8 12. Bd2 g6 13. c3 Bg4 14. h3 Bxf3 15. Qxf3 c5 16. Rac1 Re6 17. Rc2 Be7 18. Rfc1 Rb7 {Henri,J (2334)-Siebert,W (2179) ICCF 2009 1-0 (38)}) 7... O-O 8. O-O Bd7 9. d3 (9. Qe2 a6 10. Bxc6 Bxc6 11. cxd4 Re8 12. dxe5 Bxe5 13. Nxe5 Rxe5 14. d3 Re8 15. b3 Qd6 16. Bb2 g6 17. Qd2 Nd7 18. Rac1 Rad8 19. Rfe1 Bb5 20. Qc3 f6 {Taksrud,V (2049)-Natskår,A (1997) ICCF 2009 1-0 (63)}) (9. Re1 dxc3 10. dxc3 h6 11. h3 Ne7 12. a4 Be6 13. Nh4 a6 14. Bd3 Ng6 15. Nhf5 Ne7 16. Qc2 Qd7 17. Be3 Nxf5 18. exf5 Bd5 19. Ne4 Be7 20. Nxf6+ Bxf6 {Ryan,P (2166)-Sieviläinen,T (2100) ICCF 2009 1/2 (44)}) 9... dxc3 10. bxc3 a6 11. Ba4 b5 12. Bc2 h6 13. h3 Re8 14. Be3 Na5 15. a4 c5 16. axb5 axb5 17. Nh4 {Taksrud,V (2089)-Lindhom,E (2197) ICCF 2012 1/2 (49)}) (5... a6 6. Bc4 Nf6 (6... Bd6 7. d3 Na5 8. Bd5 c6 9. Bb3 Nxb3 10. axb3 Nf6 11. h3 h6 12. O-O O-O 13. Nh4 Nd5 14. Nhf5 Nf4 15. Ra4 c5 16. Nh5 Bxf5 17. exf5 Qg5 18. Ng3 { Fuhr,M (2249)-Mujunen,M (2166) ICCF 2012 1/2 (41)}) (6... h5 7. h3 h4 8. Nf1 ( 8. Ne2 Qf6 9. d3 Qg6 10. Rg1 Bd7 11. c3 dxc3 12. bxc3 O-O-O 13. Rb1 Nge7 14. Be3 Be8 15. Qc2 f5 16. d4 exd4 17. Nf4 Qf6 18. Nxd4 Bf7 19. Be6+ Bxe6 {Fuhr,M (2283)-Khokhlov,I (2373) ICCF 2009 1/2 (37)}) 8... Qf6 9. d3 Qg6 10. N1h2 f6 11. Bxg8 Rxg8 12. Nxh4 Qh7 13. N4f3 g5 14. Bd2 Be6 15. a3 O-O-O 16. Qe2 Bc5 17. O-O-O Qe7 18. Rdg1 {Ruwette,J (2289)-Petkov,S (2342) ICCF 2012 1/2 (28)}) (6... h6 7. d3 Bg4 8. h3 Bxf3 9. Qxf3 Qf6 10. Nf5 Nge7 11. c3 Nxf5 12. Qxf5 Qxf5 13. exf5 Na5 14. cxd4 b5 15. Bd5 Rd8 16. Be4 Bb4+ 17. Ke2 exd4 18. Bd2 {Rouse,L (1417)-Jatkowski,S (1813) ICCF 2020 1/2}) 7. d3 Bb4+ 8. Bd2 Bxd2+ 9. Qxd2 O-O 10. O-O h6 11. a3 Bg4 12. Ne1 Kh8 13. f4 b5 14. Ba2 Qd6 15. f5 b4 16. h3 Bh5 17. axb4 {Rouse,L-Mora Collao,F ICCF 2020 1-0 (55)}) (5... Bd6 6. Bc4 h5 (6... Na5 7. Be2 Ne7 8. O-O O-O 9. c3 c5 10. d3 Nac6 11. Bg5 Be6 12. Nh4 Qd7 13. h3 f6 14. Bd2 Ng6 15. Nhf5 Nf4 16. Nxd6 Qxd6 17. c4 g6 {0-1 (17) Keast,D (2195) -Bisht,M (2226) ICCF 2017}) 7. h4 (7. h3 h4 8. Ne2 Rh6 9. c3 Rg6 10. cxd4 exd4 11. Qb3 Nh6 12. Bb5 Rxg2 13. e5 Be7 14. Nf4 Rg5 15. Nxg5 Bxg5 16. d3 Kf8 17. Bxc6 bxc6 18. Rg1 Qe7 {Nielsen,J (1954)-Fichtner,B (2067) ICCF 2005}) 7... Bg4 8. a3 Nge7 9. d3 Ng6 10. Nf5 O-O 11. Bg5 Qd7 12. Nxd6 cxd6 13. c3 Rac8 14. Qa4 a6 15. Bd5 Bxf3 16. gxf3 b5 17. Qxa6 {Wyder,B (1909)-Schneider,H (2208) ICCF 2008 0-1 (25)}) (5... Be6 6. Bb5 Bd6 (6... f6 7. c3 (7. O-O Nge7 (7... Qd7 8. c3 d3 (8... Nge7 9. cxd4 exd4 10. d3 O-O-O 11. a3 h5 12. Ne2 a6 13. Ba4 Bg4 14. Nd2 Kb8 15. f3 Be6 16. b4 h4 17. Rb1 h3 18. g3 g5 19. b5 axb5 20. Bxb5 { Walther,J (2231)-Altieri,C ICCF 2013 1-0 (54)}) 9. Ne1 (9. Qa4 h5 10. Nf5 a6 11. Ne3 h4 12. Ne1 O-O-O 13. Bxd3 Nge7 14. Bc4 Bxc4 15. Qxc4 Ng6 16. b4 Nf4 17. a4 g6 18. Kh1 f5 19. Qa2 Nb8 20. Qc2 Rh5 {Glanville,C (2116)-Halliday,J (1882) ICCF 2013 1-0 (38)}) 9... O-O-O 10. Bxd3 h5 11. b4 g5 12. a4 g4 13. a5 h4 14. Nf5 g3 15. h3 gxf2+ 16. Rxf2 Nce7 17. Nxe7+ Nxe7 18. Rxf6 Bxh3 19. a6 {Fuhr,M (2248)-Marrero Rodríguez,A (2250) ICCF 2012 1/2 (39)}) 8. d3 Qd6 9. Bd2 (9. c3 O-O-O 10. cxd4 exd4 11. a3 h5 12. Ne2 h4 13. Qc2 a6 14. Bf4 Ne5 15. Bxe5 fxe5 16. Bc4 Bxc4 17. Qxc4 h3 18. g3 Qf6 19. Nd2 g5 20. b4 Bh6 {Foster,K (2263) -Pintor,M (2216) ICCF 2008 1-0 (52)}) 9... O-O-O 10. h4 h5 11. a3 a6 12. Ba4 Kb8 13. Qe2 Nc8 14. b4 Nb6 15. Bb3 Bxb3 16. cxb3 g6 17. Rfc1 Qe6 18. Rab1 Nc8 { Kokorin,V (2254)-Krakovský,P (2248) ICCF 2011 1/2 (71)}) (7. Bxc6+ bxc6 8. d3 h5 9. h3 Qd7 10. Nd2 Bf7 11. b3 h4 12. Ne2 g5 13. Nc4 a5 14. Nb2 Ne7 15. f3 Ng6 16. a3 Bc5 17. O-O Qe6 18. Qe1 Qe7 {Azevedo,J (2291)-Stroup,J (2023) ICCF 2015 1/2 (40)}) 7... d3 8. O-O a6 9. Bxc6+ bxc6 10. Qa4 Ne7 (10... Kf7 11. Qxc6 Ne7 12. Qa4 Ng6 13. Nf5 Nf4 14. Ne3 Qb8 15. c4 a5 16. Nd5 Ne2+ 17. Kh1 Qb7 18. Ne1 c6 19. Ne3 Qd7 20. Qb3 Rd8 21. Nf3 Bc5 22. Qa4 {Larsson,M (2323)-Jensen,E (2265) ICCF 2009 0-1 (27)}) 11. b3 Qb8 (11... Ng6 12. Nf5 Nf4 13. Ne3 g5 14. Kh1 Qd7 15. Ba3 Bxa3 16. Qxa3 h5 17. Qa4 h4 18. h3 g4 19. hxg4 Bxg4 20. Nh2 Be2 21. Rfb1 Qe6 22. Nf5 Kd7 23. Rg1 {Baumann,W (1974)-López-Benito Álvarez-Blázquez,M ICCF 2018 0-1 (36)}) 12. c4 Qb6 13. Ba3 Kf7 14. h3 c5 15. Nh4 h5 16. Ngf5 Rd8 17. Bb2 {Binder,E (2122)-Modliba,F (2091) ICCF 2014 1/2 (45)}) 7. d3 (7. c3 d3 8. O-O Nf6 9. Bxd3 a6 10. a4 Qd7 11. Bc2 Ne7 12. d4 Bg4 13. dxe5 Bxe5 14. Nxe5 Bxd1 15. Nxd7 Bxc2 16. Nxf6+ gxf6 17. f3 O-O-O 18. Be3 { Berger,B-Strelecky,R ICCF 2014 1-0 (54)}) 7... f6 8. c3 Nge7 9. O-O O-O 10. Ba4 Kh8 11. Bb3 Bd7 12. Ne1 Na5 13. Bc2 c5 14. f4 exf4 15. Bxf4 Bxf4 16. Rxf4 Qb6 17. Rb1 {Keast,D (2221)-De Smet,K (2201) ICCF 2013 0-1 (26)}) (5... Bg4 6. Bb5 Nf6 7. O-O a6 8. Bxc6+ bxc6 9. h3 Bd7 10. d3 Be7 11. Nxe5 O-O 12. f4 c5 13. b3 Ne8 14. Qh5 Nf6 15. Qf3 Re8 16. Bd2 Bd6 17. Nc4 {Visser,A (1873)-Ong,A (1369) ICCF 2019 1-0 (29)}) 6. h4 (6. Bb5 h4 7. Bxc6+ (7. Nf1 Qd6 8. h3 a6 9. Bxc6+ Qxc6 10. d3 f6 11. Bd2 Qb5 12. Qb1 Be6 13. a4 Qd7 14. N1h2 Bd6 15. c3 c5 16. O-O Ne7 17. c4 Nc6 18. Qd1 Qf7 {Rybák,M (2434)-Tinture,L (2410) ICCF 2012 0-1 (47)}) 7... bxc6 8. Ne2 h3 9. g3 Qf6 10. Neg1 Bg4 11. d3 Bb4+ 12. Kf1 Ne7 13. Bg5 Qd6 14. Bxe7 Qxe7 15. a3 Bd6 16. Rb1 Qf6 {0-1 (16) Drost,R (1893)-Berkel,M (1973) ICCF 2018}) 6... a6 (6... Nf6 7. Bb5 Bd6 8. d3 Bg4 9. Ne2 O-O 10. Nh2 Be6 11. Bxc6 bxc6 12. O-O Qd7 13. f4 exf4 14. Bxf4 Bc5 15. Ng3 Rfb8 16. Nxh5 Ng4 17. Rf3 Nxh2 18. Bxh2 {Klein,M (1981)-Mujunen,M (2109) ICCF 2012 1/2 (53)}) 7. Bc4 (7. c3 d3 8. Ng5 f6 9. Nh3 g5 10. Qb3 g4 11. Ng1 f5 12. Nxf5 Nf6 { 0-1 (12) Hoekstra,I (2175)-Hansen,J (2202) ICCF 2018}) (7. a3 Bg4 8. Be2 Bxf3 ( 8... g6 9. d3 Bxf3 10. gxf3 Qd6 11. c4 a5 12. Bd2 Nd8 13. Bf1 Ne6 14. Qc2 Bh6 15. Bxh6 Nxh6 16. Ne2 O-O 17. Qd2 Kh7 18. Ng3 Nc5 19. Rd1 b5 20. Qc2 {Fuhr,M (2217)-Konstantinov,M (2277) ICCF 2014 0-1 (33)}) 9. Bxf3 g6 10. c3 Be7 11. Qb3 Rb8 12. d3 Bxh4 13. Ne2 dxc3 14. bxc3 Bf6 15. Qc2 Kf8 16. Bb2 Kg7 17. d4 Na5 18. Rd1 Qe7 {Fuhr,M (2217)-Terreaux,G (2437) ICCF 2014 0-1 (42)}) (7. d3 Bg4 8. c3 Qd7 9. Be2 O-O-O 10. c4 Nge7 11. Bg5 f6 12. Bd2 Ng6 13. a3 Bd6 14. b4 Nf4 15. Bf1 Be7 16. Rb1 b6 17. Qb3 Kb7 18. a4 Ka8 {Vajas,S (2002)-Camps,J (1949) ICCF 2017 0-1 (39)}) (7. Be2 Nf6 8. d3 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 g6 11. O-O Nh7 12. c3 Bg4 13. Nh2 Qxh4 14. Qh6 O-O-O 15. Bxg4+ Kb8 16. Nf3 Qxg4 {0-1 (16) Justesen,A (2000)-Bolz,J (2159) ICCF 2010}) 7... Bg4 8. c3 (8. O-O Na5 9. Be2 Bxf3 10. Bxf3 g6 11. b4 Nc6 12. c3 Nh6 13. Qa4 Qxh4 14. b5 Ng4 {0-1 (14) Masset,J (1950)-Fister,B (2293) ICCF 2013}) (8. d3 Qd7 9. Bd2 Nge7 10. Nf1 Nc8 11. Bb3 Nb6 12. N1h2 Be6 13. Bxe6 Qxe6 14. Ng5 Qd7 15. O-O O-O-O 16. a4 a5 17. Nh3 Re8 {0-1 (17) Roig García,J (1742)-Kadochnikov,L (2147) ICCF 2018}) 8... b5 9. Bb3 {1-0 (9) Sadler,C (2324)-Ganiev,I (2371) ICCF 2014}) (4... Bd6 5. Ng3 ( 5. c3 c5 6. Ng3 Ne7 7. Bc4 O-O 8. O-O Nbc6 9. d3 Na5 10. Bd5 Nxd5 11. exd5 b5 12. cxd4 exd4 13. Bd2 Nb7 14. Ne4 Bg4 15. h3 Bh5 16. Re1 Bb8 {Manarin,F (1694) -Zuev,D (2141) ICCF 2009 0-1 (30)}) (5. h3 Nf6 6. Ng3 h5 7. Bc4 h4 8. Ne2 Nxe4 9. d3 Nc5 10. c3 dxc3 11. Nxc3 Nc6 12. O-O Be6 13. Be3 Bxc4 14. dxc4 Ne6 15. Re1 O-O 16. Rb1 Re8 {Fuhr,M (2217)-Shadrin,O ICCF 2014 0-1 (45)}) 5... Ne7 ( 5... Be6 6. c3 c5 7. Bb5+ Nc6 8. O-O (8. b4 Nge7 9. bxc5 Bxc5 10. Nxe5 dxc3 11. Bxc6+ Nxc6 12. Nxc6 bxc6 13. dxc3 Qxd1+ 14. Kxd1 Bxf2 15. Ke2 Bb6 16. Be3 O-O-O 17. Bxb6 axb6 18. Ke3 Rd7 19. Rhd1 Ra7 {Henri,J (2386)-Klaiber,R (2006) ICCF 2008 1/2 (29)}) 8... Nf6 9. d3 (9. b4 O-O (9... dxc3 10. dxc3 cxb4 11. cxb4 O-O 12. Bxc6 bxc6 13. Bg5 Bxb4 14. Nxe5 Qxd1 15. Raxd1 Rfc8 16. Rc1 c5 17. Nc4 Nd7 18. Nf5 Bxf5 19. exf5 Nb6 20. Rc2 Rc6 21. Rd1 {De Smet,K (2204)-Razumikhin,A (2236) ICCF 2007 1/2 (29)}) 10. bxc5 Bxc5 11. Bxc6 bxc6 12. Nxe5 dxc3 13. dxc3 Qc7 14. Nd3 (14. Nf3 Bc4 15. Re1 Qa5 16. Bd2 Rab8 17. Nd4 Rb2 18. Be3 Qa6 19. Ngf5 Bd3 20. Nxg7 Nxe4 21. Nh5 Kh8 22. Nf4 Bc4 23. Qh5 Re8 24. Nde6 Bxe3 25. Qxf7 Rg8 {Berger,B-Taylor,K (1937) ICCF 2019 1-0 (29)}) 14... Bd6 15. Qf3 Bg4 16. Qe3 Rfe8 17. f3 {Baranyuk,A (2203)-Hietanen,P (2253) ICCF 2010 1-0 (56)}) ( 9. Bxc6+ bxc6 10. d3 O-O 11. cxd4 cxd4 12. Nh4 g6 13. Bg5 Rb8 14. Qc2 Be7 15. Nf3 Nd7 16. Bxe7 Qxe7 17. Rfc1 c5 18. b3 h5 19. Nf1 h4 20. h3 f5 {Manarin,F (1655)-Deidun,J (2236) ICCF 2008 0-1}) 9... O-O 10. Nh4 dxc3 11. bxc3 Na5 12. Nhf5 a6 13. Ba4 b5 14. Bc2 h6 15. h3 Rc8 16. Qf3 Be7 17. Qe3 {Fuhr,M (2149) -Soto Palomo,C (1917) ICCF 2017 1-0 (68)}) 6. Bc4 (6. h3 Nbc6 7. Bb5 O-O 8. Bxc6 bxc6 9. d3 h6 10. Bd2 Rb8 11. Qc1 Kh7 12. O-O Ng8 13. b3 Re8 14. Rb1 c5 15. Re1 c6 16. Rf1 Ne7 17. b4 cxb4 {Wright,D (1618)-Davis,J (1603) ICCF 2015 1-0 (31)}) 6... O-O 7. d3 (7. O-O Nbc6 8. a4 Ng6 9. d3 Nf4 10. c3 Qf6 11. a5 Bg4 12. a6 b6 13. Nf5 Bxf5 14. exf5 dxc3 15. bxc3 Rad8 16. Ba2 Qxf5 17. Bxf4 exf4 18. d4 Na5 {Taksrud,V (2112)-Buczinski,H (2261) ICCF 2010 0-1 (48)}) 7... Nbc6 (7... Bb4+ 8. Nd2 Be6 9. Bxe6 fxe6 10. O-O Bxd2 11. Bxd2 Qd6 12. Qg4 Nd7 13. Bb4 c5 14. Nh5 Ng6 15. Bd2 Rf7 16. f4 exf4 17. Nxf4 Nxf4 18. Rxf4 Raf8 19. Raf1 {Kokorin,V (2161)-Karpanov,V (2230) ICCF 2012 1/2 (51)}) 8. Bd2 Ng6 9. Nf5 Be6 10. Bxe6 fxe6 11. Nxd6 cxd6 12. O-O Qb6 13. Rb1 h6 14. c3 {1/2 (14) Riihimäki,V (2036)-Nazarova,A (2072) ICCF 2013}) (4... Nd7 5. Nfg1 Bd6 6. Ng3 Ndf6 7. N1e2 Ne7 8. Nc3 dxc3 9. dxc3 O-O 10. h3 Ng6 11. Bd3 Be6 12. O-O h6 13. Be3 Nf4 14. Qf3 Qd7 15. Ne2 Nxe2+ 16. Qxe2 {Fuhr,M (2110)-Mann,R (2037) ICCF 2018 0-1}) 5. Ng3 (5. c3 c5 (5... d3 6. Ng3 Be6 7. Nxe5 (7. Nh4 c5 8. Qa4+ (8. Qh5+ Bf7 9. Qf3 c4 10. Nhf5 h5 11. h4 Nd7 12. Ne3 b5 13. Rb1 Rb8 14. Ra1 g6 15. b3 a5 16. Rb1 Be7 17. bxc4 bxc4 18. Ra1 Nc5 19. Ba3 Nh6 {Ott,P (2266)-Hale,A (2216) ICCF 2018 0-1 (44)}) 8... Nc6 9. Qb5 c4 10. Qxb7 Nge7 11. Qa6 (11. Nhf5 Rb8 12. Qa6 Kf7 13. Nxe7 Nxe7 14. Nf5 Nxf5 15. exf5 Bd5 16. Qxa7+ Be7 17. Qe3 Qd7 18. b4 Qxf5 19. Rg1 Qe6 20. a4 Qc6 21. h4 f5 22. h5 f4 {Larsson,M (2400) -Cinca,D (2484) ICCF 2006 0-1 (28)}) 11... Qb6 12. Qxb6 axb6 13. Ngf5 g5 14. Nd6+ Kd7 15. Nhf5 Nxf5 16. Nxf5 Bxf5 17. exf5 e4 18. g3 Ne5 {Larsson,M (2400) -Helbich,J (2452) ICCF 2006 0-1}) (7. Qa4+ c6 8. c4 Na6 9. Qb3 Nb4 10. Kd1 b5 11. a3 bxc4 12. Qc3 Nc2 13. Rb1 Nh6 14. h3 Qb6 15. Ne1 Nxe1 16. Kxe1 Bc5 17. Nh5 Bxf2+ 18. Kd1 O-O {Wilshusen,H (1434)-Marchant,A (1968) ICCF 2018 0-1}) 7... fxe5 8. Qh5+ Kd7 (8... Bf7 9. Qxe5+ Ne7 10. Qb5+ Nd7 (10... Nbc6 11. Qxd3 Qc8 12. Qc2 h5 13. Be2 h4 14. Nf1 Qd7 15. d4 O-O-O 16. Be3 Kb8 17. Nd2 Bg6 18. Qb3 Nc8 19. O-O h3 20. g3 Qe8 21. f3 Nb6 22. a4 {Wettering,G (1782)-Lazcano Fernández,J ICCF 2007 1-0 (45)}) 11. Qxd3 c5 (11... Ng6 12. Qc2 c5 13. d3 Qc7 14. Nf5 Be6 15. Ne3 Be7 16. g3 O-O 17. Be2 Bd6 18. Bd2 Rad8 19. O-O Bh3 20. Nd5 Qb8 21. Rfd1 Rxf2 22. Kxf2 Rf8+ 23. Kg1 {Henri,J (2335)-Chacon,P (2515) ICCF 2006 0-1 (34)}) 12. Qe3 Qb6 (12... h5 13. d4 h4 14. Ne2 cxd4 15. Nxd4 Nc6 16. Be2 h3 17. g3 Bc5 18. Nxc6 bxc6 19. Qg5 O-O 20. Qxd8 Raxd8 21. Bf4 Nf6 22. f3 Rfe8 23. Rd1 Bxa2 24. Rxd8 {Nagel,H (2180)-Vlasov,A ICCF 2012 0-1 (30)}) 13. Be2 h5 14. h4 O-O-O 15. Qf4 Be6 16. Nxh5 c4 17. b3 Nc5 18. Ng3 Ng6 19. Qg5 Rh6 20. bxc4 {Welti,M (1884)-Scherer,R (2334) ICCF 2007 0-1}) (8... g6 9. Qxe5 Qd7 10. Qxh8 Nc6 11. b4 a6 12. Bb2 O-O-O 13. b5 axb5 14. a4 b4 15. f3 Bd6 16. cxb4 Nxb4 17. Rc1 Nc2+ 18. Rxc2 dxc2 19. Be2 Bxg3+ 20. hxg3 {Ott,P (2266)-Wharam,G ICCF 2018 0-1 (40)}) 9. Qxe5 Nc6 10. Qb5 Bd6 11. Bxd3 (11. Qxd3 Qh4 12. b3 (12. b4 a6 13. a4 Nf6 14. Ba3 Ke7 15. b5 axb5 16. Bxd6+ cxd6 17. Qxb5 Rhb8 18. Bd3 Kf8 19. O-O Kg8 20. f3 Ra5 21. Qb6 Rc5 22. Rf2 Rf8 23. Bc2 Nd7 {Tosi,F (2411) -Herzog,K (1982) ICCF 2006 1-0 (35)}) (12. Be2 Rf8 13. Qe3 Bf4 14. Qd3+ Kc8 15. Qc2 Nf6 16. d3 g5 17. b3 Ne5 18. Ba3 Nfg4 19. Bxf8 Rxf8 20. Bxg4 Nxg4 21. Qe2 Be5 22. d4 Rxf2 23. Qxf2 Nxf2 {Nielsen,J (1998)-Legrand,M ICCF 2014 0-1 (28)}) 12... Kc8 (12... Re8 13. Ba3 Nf6 14. f3 Nd5 15. Bxd6 cxd6 16. Qc2 Nf4 17. d4 Kc8 18. O-O-O Bd7 19. Kb2 Kb8 20. Ne2 Nxe2 21. Bxe2 Rhf8 22. Qd2 Qf6 23. Bb5 Ka8 24. h4 {Larsson,M (2392)-Bokar,J (2550) ICCF 2004 1/2 (48)}) 13. Qf3 (13. Qc2 Nf6 14. d3 Ng4 {0-1 (14) Nielsen,J (1998)-Kibalnichenko,S ICCF 2014}) 13... Nf6 14. Nf5 Qxe4+ 15. Qxe4 Nxe4 16. Nxg7 Bd7 17. Bd3 Nxc3 (17... Nxf2 18. Kxf2 Rf8+ 19. Ke1 Rf7 20. Nh5 Re7+ 21. Kf2 Bg4 22. Rf1 Rf7+ 23. Kg1 Bc5+ 24. Kh1 Rxf1+ 25. Bxf1 Bxh5 26. d4 Nxd4 27. b4 Nc2 28. Rb1 Bb6 29. Bd3 {Larsson,M (2302)-Mesko,J (2361) ICCF 2011 0-1 (55)}) (17... Nf6 18. Nf5 Re8+ 19. Ne3 Ne5 20. Bc2 Bc6 21. f3 a5 22. d4 Ng6 23. Kf2 a4 24. Bd2 Rf8 25. Nf5 Bf4 26. Bxf4 Nxf4 27. Ne7+ Kd7 28. Nxc6 Kxc6 29. bxa4 {Larsson,M (2380)-Weegenaar,B (2170) ICCF 2004 1-0 (51)}) 18. dxc3 Be5 19. Bb2 Bxg7 20. O-O-O a5 21. c4 Bh6+ 22. Kb1 Rf8 {Larsson,M (2381)-Petraitis,G (2515) ICCF 2008 0-1 (49)}) 11... a6 12. Qa4 (12. Qh5 Ne5 13. Qe2 Qh4 14. Bc2 Rf8 15. d4 (15. Qh5 Qf6 16. f4 Bg4 17. Qg5 Qxg5 18. fxg5 c5 19. d3 Ne7 20. Bd2 N5g6 21. Nf1 Nc6 22. Ne3 Be6 23. b3 Nf4 24. Rf1 h6 25. gxh6 Rxh6 26. g3 Ng2+ {Wettering,G (2090)-Freytag,W (2287) ICCF 2012 0-1 (37)}) 15... Ng4 16. Be3 Bc4 17. Bd3 Nxe3 18. Qxe3 Bf4 19. Qe2 Bxd3 20. Qxd3 Nf6 21. e5 Ng4 22. Ne4 Be3 23. g3 Bxf2+ {Baffo,J (2113)-Mukherjee,S ICCF 2016 0-1 (40)}) 12... Qh4 (12... Kc8 13. Bb1 Nf6 14. d4 Bd7 15. Qd1 Bxg3 16. hxg3 Re8 17. f3 h6 18. Bd3 Be6 19. Be3 Qe7 20. Qc2 Bf7 21. Bf2 Nd7 22. f4 Nf6 23. e5 Kb8 24. Be2 {Henri,J (2338)-Kusmierek,J (1923) ICCF 2006 1-0 (49)}) 13. Be2 (13. Qc2 Rf8 14. Be2 Rxf2 15. Kxf2 Bxg3+ 16. Kg1 Bf2+ 17. Kf1 Nh6 18. Qd3+ Ke7 19. g3 Qh3+ 20. Kxf2 Rf8+ 21. Kg1 Ne5 22. Qe3 Nhg4 23. Qc5+ Ke8 24. Qxf8+ Kxf8 {Ljungström,E (2263)-Postl,R (2138) ICCF 2005 0-1 (33)}) 13... Nf6 14. d3 (14. Bf3 Rae8 15. d4 Kc8 (15... Nxe4 16. Nxe4 Bd5 17. Be3 Rxe4 18. O-O-O Kc8 19. Rhe1 Rf8 20. g3 Qe7 21. Bxe4 Qxe4 22. f4 Qf5 23. Bg1 Bf7 24. b4 h5 25. h4 Qd5 26. Rd2 Qf3 27. Re3 {Henri,J (2338)-Gurmen,A (2191) ICCF 2007 0-1 (42)}) 16. Be3 Ng4 17. O-O-O (17. Bxg4 Qxg4 18. Qc2 Bf7 19. e5 Be7 20. Qf5+ Qxf5 21. Nxf5 Rhg8 22. Nxe7+ Nxe7 23. b3 b5 24. f4 Kd7 25. Kd2 h5 26. g3 Be6 27. Rhe1 Rb8 28. Reb1 Rgd8 {Kriksciunas,B (2307)-Mignon,F ICCF 2006 0-1 (51)}) 17... Nxe3 18. fxe3 Bg4 19. Nf5 Bxf5 20. exf5 Rxe3 21. Bxc6 bxc6 22. Qxa6+ Kd7 { 0-1 (22) Herzog,K (1982)-Mignon,F (2081) ICCF 2006}) 14... Rac8 (14... Raf8 15. Be3 (15. Qc2 h5 16. Be3 Ng4 17. Bxg4 Qxg4 18. f3 Bxg3+ 19. hxg3 Rxf3 20. Bf4 Rxf4 21. gxf4 Qxf4 22. Qd2 Qg3+ 23. Qf2 Qg5 24. Qd2 Qg6 25. b3 Bg4 26. Qf4 Kc8 {Ott,P (2266)-Reichgeld,M (2246) ICCF 2018 0-1 (50)}) 15... Ng4 16. Bxg4 Qxg4 17. Qd1 Qxd1+ 18. Kxd1 Ne5 19. Kd2 Ng4 20. f3 Nxe3 21. Kxe3 h5 22. Ne2 h4 23. b3 Rf7 (23... g5 24. d4 c6 25. h3 Kc7 26. Kd3 Rh7 27. a4 a5 28. Kc2 Bg8 29. c4 Rd7 30. Rad1 Rc8 31. Rd3 Be7 32. Rhd1 Bf6 33. Nc3 Rcd8 34. d5 Be5 35. Kb1 { Kokorin,V (2161)-Zavrazhnov,A (2233) ICCF 2015 0-1 (66)}) 24. h3 c6 25. d4 Kc7 26. Kd3 g5 27. Kc2 Rd7 28. a4 a5 29. Kb2 Rb8 30. Rhc1 Bg8 31. Kc2 b6 32. Rd1 Kb7 33. Rd2 Ra8 34. Rad1 b5 35. axb5 cxb5 36. d5 Be5 37. Kd3 Bh7 38. c4 a4 39. Nd4 a3 40. Ra2 b4 41. Nc6 Bd6 42. Kc2 Kb6 43. Kb1 Kc5 44. Nd4 {1/2 (44) Kokorin,V (2183)-Chernov,I (2169) ICCF 2015 Irregular Openings}) (14... Rae8 15. Qc2 Rhf8 16. Be3 Ng4 17. Bxg4 Bxg4 18. Qd2 h6 19. Ne2 Kc8 (19... Re6 20. O-O-O Rxf2 21. g3 Qh5 22. Bxf2 Bxe2 23. Rde1 Bf3 24. Rhf1 Qxh2 25. Be3 Qxd2+ 26. Kxd2 Ne5 27. Rf2 Bh5 28. Rh1 Bg6 29. Rhf1 Ng4 30. Rg2 Nxe3 31. Kxe3 { Kokorin,V (2183)-Ananskikh,E (2358) ICCF 2015 0-1 (48)}) 20. h3 Qh5 21. f3 Be6 22. Kd1 Qg6 23. Nc1 Rd8 24. Kc2 Ne5 25. Qe2 c5 26. Rf1 {Kokorin,V (2161) -Fernández Fornés,J (2240) ICCF 2015 0-1 (53)}) (14... h5 15. Nf1 b5 16. Qc2 Ne5 17. h3 Ne8 18. d4 Ng6 19. e5 Nxe5 20. dxe5 Bxe5 21. Nd2 Bd6 22. O-O Nf6 23. Nf3 Qe4 24. Bd3 Qd5 25. Rd1 Ke7 26. Bg5 {Gaedtke,T-O'Brien,G (1709) ICCF 2018 1-0 (39)}) 15. Be3 Rcf8 16. Qd1 h6 17. Qd2 {Vajas,S (2002)-Nozicka,V (2051) ICCF 2017 0-1 (63)}) 6. Ng3 Be6 7. Bb5+ (7. Qa4+ Qd7 (7... Nc6 8. Bc4 Bxc4 9. Qxc4 Qd7 10. b4 cxb4 11. cxd4 Nxd4 12. Nxd4 exd4 13. Bb2 Ne7 14. Qxd4 Qxd4 15. Bxd4 Nc6 16. Be3 O-O-O 17. O-O Bd6 18. Ne2 Be5 19. Rac1 {De Smet,K (2290) -Fedorov,E (2202) ICCF 2004 1/2 (45)}) 8. Bb5 Nc6 9. O-O (9. h3 h5 10. b4 h4 11. Nf5 cxb4 12. O-O d3 13. Ne1 Nge7 14. Nxe7 Bxe7 15. Nxd3 bxc3 16. dxc3 Rc8 17. Nb4 Bxb4 18. cxb4 a6 19. Bxc6 Qxc6 20. Qxc6+ {1/2 (20) Azevedo,J (2342) -Fernández,J (2288) ICCF 2014}) 9... a6 10. Bc4 Na5 11. Qxd7+ Bxd7 12. Bd5 Ne7 13. d3 Nac6 14. Bb3 h5 15. Ne2 g6 16. h3 O-O-O 17. a4 {Lloyd,G (2112) -Vanosmael,A (2278) ICCF 2008 0-1 (58)}) (7. cxd4 cxd4 8. Bb5+ Nd7 9. O-O Ne7 10. d3 Qb6 11. a4 Nc6 12. Nd2 a6 13. Bc4 Na5 14. Bxe6 Qxe6 15. f4 g6 16. b3 Bb4 17. Nc4 O-O-O 18. fxe5 fxe5 {Ramírez,A (2354)-Moucka,J (2438) ICCF 2002 0-1 (33)}) (7. Qc2 Qd7 8. Be2 Nc6 9. O-O Bd6 10. Nf5 Bxf5 11. exf5 Nge7 12. Nh4 O-O-O 13. Bc4 Kb8 14. Be6 Qe8 15. Qe4 g6 16. b3 Nxf5 17. Bxf5 gxf5 18. Nxf5 Rg8 {Larsson,M (2381)-Calhau,E (2427) ICCF 2008 1/2 (31)}) 7... Nc6 (7... Nd7 8. O-O (8. Qe2 Ne7 (8... Nh6 9. O-O (9. Bc4 Qe7 10. Bd5 Nb6 11. Bxe6 Qxe6 12. a4 a5 13. d3 g6 14. h4 Nc8 15. h5 g5 16. O-O Bd6 17. Nd2 O-O 18. Nc4 Bc7 19. cxd4 cxd4 20. b3 Ra6 {Schuster,P (2458)-Makeev,V (2333) ICCF 2009 1/2 (29)}) 9... Nf7 10. d3 g6 11. Nd2 h5 12. Bc4 Bxc4 13. Nxc4 b5 14. Nd2 h4 15. Nh1 dxc3 16. bxc3 Nb6 17. h3 Na4 18. Nb1 Qd7 19. f3 Bg7 20. Nf2 {Tosi,F (2411)-Frigato,D ICCF 2007 1/2 (56)}) 9. Bc4 (9. O-O Ng6 (9... Rc8 10. h4 a6 11. Bc4 Bxc4 12. Qxc4 Nb6 13. Qb3 c4 14. Qd1 d3 15. h5 Qd7 16. b3 Nc6 17. Nh2 Nd8 18. Re1 Ne6 19. Ng4 Qf7 20. Rb1 Rc6 21. Ne3 {Mailfert,J (2320)-Vertes,A (2243) ICCF 2011 1-0 (63)}) (9... Qb6 10. b4 Nc6 11. bxc5 Bxc5 12. cxd4 Nxd4 13. Nxd4 Bxd4 14. Rb1 Qd6 15. Nf5 Bxf5 16. exf5 O-O-O 17. a4 g6 18. Bd3 Bb6 19. Be4 gxf5 20. Bxf5 Rdg8 21. a5 {Baffo,J (2113)-Sutton,J (2056) ICCF 2016 1-0 (29)}) 10. d3 Kf7 11. Ba4 dxc3 12. bxc3 Qa5 13. Bxd7 Bxd7 14. Rb1 Qa6 15. d4 Qxe2 16. Nxe2 b6 17. dxe5 Nxe5 18. Nxe5+ fxe5 19. f4 exf4 20. Nxf4 Re8 {Mailfert,J (2342)-Bobel,P (2223) ICCF 2010 1/2 (33)}) 9... Qb6 (9... Bxc4 10. Qxc4 Nc6 11. Nf5 Qb6 12. Qe6+ Kd8 13. O-O Kc7 14. d3 Nd8 15. Qc4 g6 16. Ng3 Qe6 17. Qa4 Nc6 18. a3 h5 19. h4 Rc8 20. c4 Kb8 21. Bd2 {Kokorin,V (2325)-Hoynck van Papendrecht,F (2176) ICCF 2011 0-1 (53)}) 10. a4 (10. Bxe6 Qxe6 11. d3 g6 12. O-O h5 13. h4 Nc6 14. Qc2 Kf7 15. Bd2 Bh6 16. Bxh6 Rxh6 17. Ne2 Rhh8 18. Nd2 Kg7 19. f4 Qg4 20. Nc4 Qxh4 21. cxd4 Nxd4 {Baumann,W (2038)-Ramsden,J (2067) ICCF 2013 1/2 (29)}) 10... g6 11. O-O Kf7 12. b4 Bxc4 13. Qxc4+ Qe6 14. Qxe6+ Kxe6 15. bxc5 Nc6 16. cxd4 Nxd4 17. Nxd4+ exd4 18. Ne2 Nxc5 19. Nxd4+ Kf7 {Tosi,F (2393)-Grobler,D (1816) ICCF 2008 1/2 (66)}) (8. d3 Qa5 (8... Kf7 9. Nh4 Ne7 10. O-O dxc3 11. bxc3 Nb6 12. Qe2 a6 13. Bc4 Nxc4 14. dxc4 Ng6 15. Nhf5 Nf4 16. Bxf4 exf4 17. Nh5 Qc7 18. Qg4 g6 19. Nxf4 Bxc4 20. Ne3 {Wyder,B (2010)-Müller-Töpler,M (2056) ICCF 2009 1-0 (28)}) (8... dxc3 9. bxc3 Qa5 10. Rb1 (10. a4 a6 11. Bxd7+ Bxd7 12. Bd2 Bg4 13. h3 Bxf3 14. Qxf3 Rd8 15. Qe2 Qc7 16. Rb1 Qd7 17. O-O Qxd3 18. Qxd3 Rxd3 19. Rb2 h5 20. Be3 Rxc3 21. Rfb1 h4 {Kokorin,V (2161)-Vajas,S (2057) ICCF 2015 1-0 (62)}) 10... a6 11. Bxd7+ Bxd7 12. Qb3 b5 13. O-O Rc8 14. d4 c4 15. Qc2 Bg4 16. dxe5 Bxf3 17. gxf3 fxe5 18. f4 exf4 19. Bxf4 Ne7 20. Nf5 { Kerr,S (2554)-Booth,R (2246) ICCF 2008 1-0 (25)}) 9. a4 a6 10. Bxd7+ Bxd7 11. Bd2 Qb6 12. O-O a5 13. cxd4 cxd4 14. Nh4 Ne7 15. Rc1 Rc8 16. Rxc8+ Bxc8 17. f4 exf4 18. Bxf4 g6 19. Qc1 Bd7 {Kokorin,V (2358)-Gus'kov,V (2355) ICCF 2010 1-0 (33)}) (8. b4 dxc3 9. dxc3 cxb4 10. O-O a6 11. Bxd7+ Qxd7 12. cxb4 Rd8 13. Qxd7+ Rxd7 14. a3 Kf7 15. Be3 Bd6 16. Rfd1 Ne7 17. Rd2 Rhd8 18. Rad1 Nc8 19. Ne1 Be7 {Henri,J (2386)-Atakisi,F (2337) ICCF 2008 0-1 (41)}) 8... a6 9. Be2 Ne7 (9... g6 10. d3 Ne7 11. c4 (11. cxd4 cxd4 12. Nh4 Bg7 13. f4 Nc6 14. f5 Bf7 15. Nf3 a5 16. b3 Qc7 17. Bd2 Nc5 18. Rc1 b6 19. Ne1 Qd6 20. Qc2 O-O 21. h4 Nb4 22. Qb1 Qd7 {Larsson,M (2395)-Triay Moll,L (2262) ICCF 2007 0-1 (43)}) (11. Nh4 Nc6 12. Qc2 Bg7 13. a4 O-O 14. c4 b5 15. axb5 axb5 16. Rxa8 Qxa8 17. b3 Nb4 18. Qb1 Qa2 19. Qxa2 Nxa2 20. Bd2 b4 21. Ra1 Ra8 22. Bd1 Ra3 {Henri,J (2328)-Owen, K (2307) ICCF 2010 0-1 (39)}) 11... Nc6 (11... Bf7 12. Bd2 Nc6 13. a3 h5 14. h4 Be7 15. Qc2 Qc7 16. Rfb1 b5 17. b3 O-O 18. Qd1 Rfb8 19. Nh2 Be6 20. Nxh5 gxh5 21. Bxh5 Qd6 22. Qf3 Ra7 23. Ng4 {Larsson,M (2395)-Moser,R (2287) ICCF 2007 1/ 2 (48)}) 12. Bd2 b5 13. b3 Qc7 14. Nh4 {1-0 (14) Henri,J (2328)-Claridge,J (2383) ICCF 2010}) 10. b3 (10. d3 Nc6 11. Nd2 g6 12. Bg4 Bf7 13. Nb3 h5 14. Bh3 Be7 15. Ne2 O-O 16. cxd4 cxd4 17. f4 a5 18. Bxd7 Qxd7 19. fxe5 {Kuiphof,H (2353)-Adam,C (2324) ICCF 2008 0-1 (46)}) 10... g6 11. Bc4 Bxc4 12. bxc4 Qa5 13. cxd4 cxd4 14. d3 Nc6 15. Nd2 Qc7 16. Nb3 h5 17. Ne2 h4 18. h3 g5 19. Bd2 { Fuhr,M (2149)-Batchelor,P (2256) ICCF 2017 0-1 (49)}) 8. c4 (8. O-O Bd6 (8... Nge7 9. d3 (9. cxd4 cxd4 10. d3 Qb6 11. Qa4 a6 12. Bc4 Bxc4 13. dxc4 a5 14. Ne1 h5 15. Nd3 g5 16. f3 h4 17. Nh1 Kf7 18. Bd2 Qa6 19. Nhf2 Ng6 20. a3 Be7 { Nutt,J (2247)-Brandberg,J (2279) ICCF 2019 1/2 (43)}) 9... Qa5 10. c4 a6 11. Bd2 Qc7 12. Ba4 h5 13. Nh4 O-O-O 14. h3 g5 15. Qf3 Bg7 16. Nhf5 g4 17. hxg4 hxg4 18. Qxg4 Rdg8 19. Qf3 Bxf5 20. exf5 {Augereau,C (2118)-Roques,P (2305) ICCF 2011 1/2 (27)}) 9. b4 dxc3 (9... Nge7 10. bxc5 Bxc5 11. cxd4 Bxd4 12. Nxd4 Qxd4 13. Ba3 a6 14. Bxc6+ Nxc6 15. Qh5+ g6 16. Qh4 Kf7 17. Rab1 Rab8 18. Bb2 Qc5 19. Rfc1 Qa5 20. f4 Bxa2 21. fxe5 {Popov,O-Bieker,P (2004) ICCF 2018 1-0 (47)}) 10. dxc3 cxb4 11. cxb4 Nge7 12. a3 O-O 13. Ba4 Kh8 14. Bb3 Bg4 15. Be3 a5 16. b5 Nd4 17. Bxd4 exd4 {Orlando,E (2059)-Yatsenko,L (2121) ICCF 2020 1/2 (28)}) (8. Bxc6+ bxc6 9. d3 Qb6 10. O-O a5 11. Nd2 a4 12. Nc4 Bxc4 13. dxc4 g6 14. f4 Bd6 15. Qf3 Rb8 16. Rb1 Qc7 17. h4 Ne7 18. f5 Ng8 19. b3 Qd7 {Allmer, C-Veiga Rodriguez,P ICCF 2012 1-0 (39)}) (8. Qe2 Nge7 9. Bc4 Bxc4 10. Qxc4 h5 ( 10... Ng6 11. d3 h5 12. Ne2 h4 13. h3 Qd7 {1/2 (13) De Smet,K (2194)-Savoya,A (1882) ICCF 2008}) 11. h4 (11. Qxc5 h4 12. Nf1 Ng6 13. Qb5 Nf4 14. Qxb7 Rc8 15. Rg1 Rc7 16. Qb5 Qc8 17. a3 a6 18. Qb3 Nd8 19. Kd1 Nde6 20. cxd4 exd4 21. Ne1 Rh5 22. Qa4+ Rb5 {Jong,E (2139)-Driessen,B (1972) ICCF 2013 0-1 (25)}) 11... Ng6 12. d3 Qd7 13. O-O O-O-O 14. cxd4 exd4 15. Qc2 Kb8 16. Bd2 Bd6 17. Nf5 Bf8 18. a3 Nge5 19. Nxe5 Nxe5 {Gaedtke,T-Sirotkin,E ICCF 2018 0-1 (51)}) (8. d3 Qb6 9. Qa4 Nge7 10. Bc4 Bxc4 11. Qxc4 O-O-O 12. Bd2 dxc3 13. Bxc3 Nb4 14. Bxb4 Qxb4+ 15. Qxb4 cxb4 16. Ke2 Ng6 17. Rhc1+ Kb8 18. Nh5 Rd7 19. Rc4 b6 {Larsson, M (2290)-Rohs,R (2220) ICCF 2013 1-0 (41)}) 8... Nge7 9. d3 a6 10. Bxc6+ Nxc6 11. b3 Qd7 12. h3 h5 13. Nf1 O-O-O 14. a3 g5 15. Rb1 Qh7 16. Bd2 a5 {Vajas,S (2002)-Herzog,K (2061) ICCF 2017 1/2 (40)}) (5. d3 Be6 6. g3 c5 7. b3 Qd7 8. Neg1 Nc6 9. Nd2 Nh6 10. Nc4 Nf7 11. Rb1 b5 12. Nb2 Be7 13. Qe2 O-O 14. a4 a6 15. h4 f5 16. Kd1 fxe4 {Brião,P (1863)-Sale,Y ICCF 2019 0-1 (29)}) 5... Be6 6. b3 (6. Bb5+ c6 (6... Nd7 7. Qe2 c6 8. Bc4 Nc5 9. Bxe6 Nxe6 10. d3 Bb4+ 11. Nd2 g6 12. a3 Bxd2+ 13. Bxd2 Ne7 14. O-O Qd6 15. Qf3 O-O 16. Qg4 Kh8 17. b4 b6 18. f4 {Wyder,B (2045)-Owens,S (2027) ICCF 2009 1/2 (50)}) 7. Ba4 (7. Be2 c5 (7... Bc5 8. O-O Ne7 9. d3 O-O 10. Nh4 Qd7 11. a3 (11. h3 Ng6 12. Nxg6 hxg6 13. h4 ( 13. f4 exf4 14. Bxf4 Bd6 15. Bg4 Bxg4 16. Qxg4 Qxg4 17. hxg4 Bxf4 18. Rxf4 g5 19. Rf5 g6 20. Rff1 Nd7 21. Ne2 c5 22. Kh2 Ne5 23. Kg3 Kg7 24. Ng1 Nc6 { Taksrud,V (2035)-Krutous,A (2242) ICCF 2009 1-0 (56)}) 13... Na6 14. h5 g5 15. Nf5 Nc7 16. g4 a5 17. Bd2 a4 18. a3 Bf7 19. Kg2 Ne6 20. Rh1 Kh8 21. Rc1 Ra6 22. Rb1 Rb6 {Palm,W (2319)-Chukanov,I (2284) ICCF 2011 1/2 (45)}) 11... a5 (11... Na6 12. h3 (12. Nhf5 Nc7 13. Bd2 Nxf5 {1/2 (13) Palm,W (2319)-Popov,E (2310) ICCF 2011}) 12... Nc7 13. Bg4 Bxg4 14. hxg4 Rad8 15. Nhf5 Ne6 16. Kh2 g6 17. Nh6+ Kg7 18. Rh1 Ng8 19. Kg1 Ng5 20. Nxg8 Kxg8 21. Nf1 Rf7 22. Nd2 Bf8 23. Nc4 {Kokorin,V (2358)-Grebenkin,V (2272) ICCF 2010 1/2 (54)}) 12. h3 Ng6 13. Nhf5 Nf4 14. Bg4 g6 15. Nh6+ Kg7 16. Bxe6 Qxe6 17. Ng4 Bd6 18. Ne2 c5 {Kokorin,V (2358)-Babushkin,I ICCF 2010 0-1 (43)}) (7... Ne7 8. O-O Qd7 (8... c5 9. h3 g6 10. b3 Nbc6 11. Bc4 Bxc4 12. bxc4 Bh6 13. d3 Bxc1 14. Qxc1 h5 15. Nh2 g5 16. Qd1 h4 17. Ng4 Qd6 18. Ne2 O-O-O 19. a4 b6 20. Rb1 {Del Vivo,M (2215)-Suárez Rodríguez,J (2267) ICCF 2019 1/2 (37)}) (8... g6 9. b3 Nd7 10. Bc4 Nc5 11. d3 Bxc4 12. bxc4 h5 13. h3 Bh6 14. Bxh6 Rxh6 15. Qd2 Rh7 16. Rfb1 Qd7 17. Qb4 b6 18. a4 Nb7 19. Nh4 Rd8 20. Qd2 {Glanville,C (2040)-Gillam,S (2275) ICCF 2015 1/ 2 (44)}) 9. d3 (9. h3 g6 10. d3 Bg7 11. c4 O-O 12. b4 a5 13. bxa5 Rxa5 14. Bd2 Ra7 15. a4 c5 16. Qb3 Nec6 17. h4 h5 18. Rfb1 Na6 19. Ne1 Rfa8 20. Nc2 Bf8 { Nielsen,J (2016)-Castillo,G (1974) ICCF 2014 1-0 (32)}) (9. b3 c5 10. Bc4 Nbc6 11. Bxe6 Qxe6 12. Ne1 O-O-O 13. Nd3 Ng6 14. Nh5 Nf4 15. Nb2 Nxh5 16. Qxh5 g6 17. Qe2 f5 18. Nd3 h5 19. a4 Bd6 20. a5 f4 {Vandermeulen,B (2570)-Stephan,J (2555) ICCF 2010 0-1 (74)}) 9... c5 10. a3 (10. Bd2 Ng6 11. c3 Nc6 12. Nf5 O-O-O 13. cxd4 cxd4 14. Qa4 Kb8 15. g3 Rc8 16. Rfc1 Nge7 17. Nxe7 Bxe7 18. Nh4 g6 19. Rab1 a6 20. a3 Rhf8 21. Bf3 f5 {Kokorin,V (2161)-Polyakov,D (1886) ICCF 2012 0-1 (49)}) 10... Nbc6 11. Nh5 Ng6 (11... Ng8 12. c4 g6 13. Ng3 h5 14. Nh4 Qh7 15. Bd2 O-O-O 16. Re1 Kb8 17. b4 g5 18. Nhf5 h4 19. Nf1 Nh6 20. Nxh6 Bxh6 21. h3 g4 22. Bxh6 gxh3 23. Bc1 {Vandermeulen,B (2568)-Zajontz,R (2504) ICCF 2012 1-0 (64)}) 12. h3 Bd6 13. Bh6 Bf8 14. Bd2 Qf7 15. Nh2 Bd6 16. Bg4 O-O 17. Ng3 Nf4 18. Nf5 Bc7 19. g3 {Azevedo,J (2339)-Zylla,J (2378) ICCF 2014 1/2 (36)} ) (7... Qd7 8. O-O c5 (8... g6 9. b3 Nh6 10. Bb2 (10. Bc4 Bxc4 11. bxc4 Na6 12. d3 Nc5 13. h3 Nf7 14. Nh2 Be7 15. a4 O-O-O 16. f4 exf4 17. Bxf4 Ne6 18. Bd2 h5 19. Rb1 Qc7 20. Ne2 Bd6 21. Nf3 g5 {Vandermeulen,B (2563)-Batrakov,A (2490) ICCF 2012 1/2 (36)}) 10... Nf7 11. Ne1 h5 12. h4 c5 13. c3 Nc6 14. cxd4 Nxd4 15. Bc4 Bg4 16. f3 Be6 17. Nc2 O-O-O 18. Nxd4 Bxc4 19. bxc4 exd4 20. a4 { Kokorin,V (2254)-Tosi,F (2271) ICCF 2011 1/2 (49)}) 9. b3 (9. d3 Nc6 10. Bd2 ( 10. c3 Bd6 11. Nf5 Bxf5 12. exf5 O-O-O 13. cxd4 exd4 14. a3 Kb8 15. b4 cxb4 16. axb4 Qxf5 17. Nd2 Bxb4 18. Nc4 g5 19. Bd2 Bxd2 20. Qxd2 Nge7 21. Rfb1 Rd7 { Wyder,B (1909)-Salzmann,S (2292) ICCF 2007 1/2 (32)}) 10... g6 (10... Bd6 11. Nh4 g6 12. a3 Nge7 13. Rb1 O-O 14. Nf3 b5 15. h3 c4 16. Nh2 h5 17. Bh6 Rfc8 18. f4 exf4 19. Bxf4 Rf8 20. Qd2 Qc7 21. Rf2 c3 22. bxc3 {Wieringen,C (2300) -Ivanoff,G ICCF 2004 1/2 (42)}) 11. c3 Nh6 12. Rc1 Nf7 13. h4 h5 14. Qc2 Be7 15. Qb1 O-O 16. cxd4 cxd4 17. b4 b5 18. Rc2 Rfb8 19. Rfc1 Rc8 20. a3 a5 { Kokorin,V (2325)-Zemlyanov,S (2180) ICCF 2011 0-1 (72)}) 9... Nc6 10. h3 (10. Bc4 O-O-O 11. Bxe6 Qxe6 12. d3 h5 13. Nh4 Nge7 14. Ngf5 g5 15. Nxe7+ Nxe7 16. Nf3 Ng6 17. Nd2 Bd6 18. a3 Kb8 19. Nc4 Bc7 20. b4 b5 21. Nd2 cxb4 {Azevedo,J (2300)-Romero Rodríguez,J (2306) ICCF 2017 0-1 (64)}) (10. a4 h5 (10... g6 11. h3 O-O-O 12. Re1 h5 13. Bc4 Bxc4 14. bxc4 d3 15. cxd3 Qxd3 16. Ba3 Na5 17. Re3 Qd6 18. Re1 Qd3 19. Re3 Qd6 20. Rb1 b6 21. Rb5 Qc7 22. Ne2 {Manarin,F (1935) -Weglicki,S (2077) ICCF 2018 0-1 (57)}) 11. Nh4 Bf7 12. h3 g5 13. Nhf5 h4 14. Bg4 Be6 15. Nh5 O-O-O 16. a5 Kb8 17. a6 b6 18. d3 Qh7 19. Bd2 Re8 20. Bf3 Bf7 21. g4 hxg3 {Kokorin,V (2161)-Nemtsev,S (2347) ICCF 2012 1/2 (47)}) 10... O-O-O (10... h5 11. Re1 g6 12. Bc4 Bxc4 13. bxc4 Bh6 14. a4 Nge7 15. d3 Bxc1 16. Qxc1 O-O-O 17. a5 Qc7 18. Qa3 Nb4 19. Qa4 Qd7 20. Qxd7+ Kxd7 21. Rec1 Ra8 22. Kf1 { Azevedo,J (2272)-Valente,D (2165) ICCF 2016 1/2}) 11. Bc4 h5 12. Nh4 Nge7 13. d3 Kb8 14. Bxe6 Qxe6 15. Bd2 g5 16. Nhf5 Nxf5 17. Nxf5 Rd7 18. a4 Rdh7 19. Kh2 {Vandermeulen,B (2563)-Kochemasov,A (2499) ICCF 2012 1/2 (30)}) (7... Nd7 8. O-O Ne7 (8... Qc7 9. c3 dxc3 10. bxc3 Bd6 11. Nh5 Kf7 12. d4 Rd8 13. Nh4 exd4 14. cxd4 Ne7 15. f4 Nb6 16. f5 Bc4 17. Nxf6 gxf6 18. Bh5+ Ng6 19. fxg6+ hxg6 20. Nxg6 {Deneuville,C (2221)-Hughes,G (1733) ICCF 2012 1-0}) (8... g6 9. c3 c5 10. b4 (10. b3 dxc3 11. dxc3 Qc7 12. Qc2 O-O-O 13. Rd1 h5 14. Nf1 Ne7 15. a4 h4 16. h3 Nc6 17. Ne3 Na5 18. Nd5 Bxd5 19. Rxd5 Bd6 20. Be3 Nb6 21. Rdd1 Kb8 { Maddox,D (2198)-Brandt,O ICCF 2005 0-1}) 10... h5 11. Nh4 Kf7 12. Rb1 Bxa2 13. cxd4 cxd4 14. Nxg6 Kxg6 15. Bxh5+ Kh7 16. Qg4 Ne7 17. Rb2 f5 18. Nxf5 Nf6 19. Qg5 Nxe4 20. Bg6+ {Taksrud,V (2035)-Gonzalez Melo,A ICCF 2009 1/2 (35)}) 9. c3 (9. d3 g6 10. Nh4 c5 11. Bg4 Bf7 12. f4 exf4 13. Bxf4 Nc6 14. Nf3 h5 15. Bxd7+ Qxd7 16. e5 f5 17. Qd2 O-O-O 18. Rf2 h4 19. Nf1 h3 20. g3 Be7 {Azevedo,J (2339) -Scuderi,D (2291) ICCF 2014 0-1 (58)}) 9... c5 10. Qc2 (10. Ne1 g6 11. Bg4 Bf7 12. Bh3 Qb6 13. Bxd7+ Kxd7 14. f4 Nc6 15. fxe5 Nxe5 16. d3 Rc8 17. Bf4 Be6 18. Nf3 Nxf3+ 19. Qxf3 Be7 20. Bh6 Rhg8 21. a4 a5 {Kriksciunas,B (2307)-Mamonovas, V (2073) ICCF 2007 0-1 (58)}) 10... g6 11. b4 h5 12. h4 Nc6 13. bxc5 Nxc5 14. cxd4 Nxd4 15. Nxd4 exd4 16. Bb5+ Kf7 17. d3 Rc8 18. Bc4 Qd7 19. Rb1 {Kokorin,V (2358)-Filipchenko,V (2363) ICCF 2010 1/2 (31)}) (7... Na6 8. O-O Qd7 9. Bxa6 bxa6 10. d3 Bd6 11. c3 c5 12. Nh4 Ne7 13. Nhf5 {1/2 (13) Tosi,F (2404)-Schmidt, T (2538) ICCF 2007}) (7... g6 8. O-O h5 9. Nh4 Bf7 10. d3 f5 11. Nf3 f4 12. Nxe5 fxg3 13. fxg3 Rh7 14. Nf3 Nd7 15. a4 Be7 16. Nxd4 h4 17. Qe1 Ne5 18. c3 h3 19. gxh3 {Mary,P (2195)-Buchaillot,L (2218) ICCF 2005 1-0 (44)}) (7... Qc7 8. O-O c5 9. d3 Nc6 10. Bd2 g6 11. c3 Bd6 12. cxd4 cxd4 13. a3 h5 14. Nh4 Nge7 15. b4 b5 16. Qc2 Kf7 17. Rfb1 g5 18. Nhf5 h4 19. Nxd6+ {Gallo,C-Cosentino,A (1967) ICCF 2013 0-1 (51)}) (7... Nh6 8. O-O Nf7 9. b3 g6 10. Bb2 c5 11. Bc4 Qd7 12. Qe2 Nc6 13. Bxe6 Qxe6 14. c3 O-O-O 15. cxd4 cxd4 16. Rfc1 h5 17. h4 Kb8 18. Qb5 Rc8 19. Rab1 {Palm,W (2319)-Graham,S (2333) ICCF 2012 1-0 (36)}) 8. O-O Nc6 9. Bb5 Bd6 10. d3 Nge7 11. Nh4 Qd7 12. Qe2 O-O-O 13. a4 g5 14. Nhf5 Nxf5 15. exf5 Bxf5 16. Qf3 Be6 17. Bxc6 Qxc6 18. Qxf6 Bd5 {Taksrud,V (2087)-Huber,M ICCF 2010 1/2 (42)}) (7. Bd3 Nd7 (7... Qd7 8. Qe2 c5 9. O-O Nc6 10. Bc4 g6 11. Bxe6 Qxe6 12. Qb5 O-O-O 13. d3 Bd6 14. h3 Nge7 15. Bh6 Rdg8 16. Qb3 Qxb3 17. axb3 a6 18. Rfd1 Kd7 19. h4 {Justesen,A (2000)-Dempster,D (1743) ICCF 2010 1/2}) 8. Be2 (8. O-O h5 9. Qe2 h4 10. Nf5 h3 11. N3h4 hxg2 12. Kxg2 Nc5 13. Ng6 Nxd3 14. Qxd3 Rh5 15. f4 Bxf5 16. exf5 Qd5+ 17. Qf3 Rxf5 18. d3 Ne7 19. Qxd5 cxd5 { Justesen,A (2000)-Bleker,F (2330) ICCF 2010 0-1 (36)}) 8... Bd6 9. c3 Qb6 10. Qa4 O-O-O 11. O-O h5 12. cxd4 h4 13. dxe5 Nxe5 14. Nf5 Nxf3+ 15. Bxf3 Bxf5 16. exf5 Ne7 17. d3 Qc5 18. d4 Qxf5 {Wyder,B (2028)-Killer,O (2219) ICCF 2009 0-1 (44)}) 7... Na6 (7... h5 8. Bb3 (8. Nh4 Ne7 9. Ngf5 (9. Bb3 Bxb3 10. axb3 d3 11. Ngf5 Kf7 12. c3 g6 13. Ne3 Na6 14. b4 Bh6 15. b3 c5 16. bxc5 Bg5 17. Nf3 Bxe3 18. dxe3 Nxc5 19. Nd2 Qb6 20. b4 Ne6 {De Smet,K (2194)-Marcin,D (2080) ICCF 2008 1-0 (56)}) 9... Na6 (9... g5 10. Nxe7 Bxe7 11. Ng6 Rh7 12. h4 g4 13. Nxe7 Qxe7 14. O-O Na6 15. d3 O-O-O 16. f4 Nc5 17. Bb3 f5 18. Bxe6+ Nxe6 19. g3 Rf8 20. Qe2 Rhf7 21. exf5 {Kokorin,V (2179)-Ivanov,V (2169) ICCF 2017 1/2 (30)} ) 10. O-O Nc5 11. Bb3 Nxb3 12. axb3 Kf7 13. d3 g5 14. Nxe7 Bxe7 15. Nf5 Bxf5 16. exf5 Qd7 17. Qf3 Bb4 18. Qe4 Qd5 19. Qe2 a6 {Kokorin,V (2182)-Malin,D (2295) ICCF 2017 1/2 (33)}) 8... Bxb3 9. axb3 h4 10. Nf5 h3 11. g4 g6 (11... Na6 12. d3 g6 13. N5h4 g5 14. Nf5 Ne7 (14... Nh6 15. Rg1 Nxf5 16. gxf5 Qc7 17. Bd2 O-O-O 18. Rxa6 bxa6 19. Qa1 Qb7 20. Ke2 Kb8 21. Ba5 Rd7 22. Nd2 Rdh7 23. Nc4 Bc5 24. Bd2 Rh4 25. Qa2 Qb5 26. Ba5 {Kokorin,V (2223)-Ermakov,V (2247) ICCF 2018 1/2 (39)}) 15. Rg1 Qd7 16. Nd2 Nc7 17. Nxe7 Bxe7 18. Qf3 Ne6 19. Rg3 Nf4 20. Nf1 Bb4+ 21. Kd1 Qh7 22. Rg1 Kd7 23. Ng3 {Kokorin,V (2223)-Sugonyak,D (2204) ICCF 2018 1/2 (25)}) (11... d3 12. cxd3 g6 13. N5h4 Ne7 14. d4 exd4 15. d3 g5 16. Nf5 Nxf5 17. gxf5 Qd7 18. Rg1 Na6 19. e5 Qxf5 20. exf6 O-O-O 21. Kf1 g4 22. Ng5 Nc5 23. Qxg4 {Kokorin,V (2182)-Zolochevsky,V (2324) ICCF 2017 1/2 (43)}) 12. N5h4 Ne7 13. d3 c5 14. Qe2 Qd6 (14... Bg7 15. g5 Qd6 16. Rg1 f5 17. Rg3 Nbc6 18. Rxh3 Qe6 19. Ng1 Kd7 20. Bd2 fxe4 21. Qxe4 Rh5 22. Rg3 Rah8 23. Nhf3 Nf5 24. Rg2 Kc7 25. Ne2 Qf7 26. Ng3 {Kokorin,V (2250)-Nopin,V (2242) ICCF 2019 1/2 (66)}) 15. Qf1 (15. g5 f5 16. exf5 gxf5 17. Rg1 Bg7 18. g6 Nbc6 19. Bg5 O-O-O 20. O-O-O Rdf8 21. Rde1 Nd5 22. Nd2 b5 23. Qf3 Kb8 24. Qg3 Ncb4 25. Nb1 Ka8 26. Na3 Qa6 {Ryan,P (2205)-Meiners,E (2373) ICCF 2017 0-1 (27)}) 15... Bg7 16. Bd2 Nbc6 17. Rg1 O-O-O {Kokorin,V (2271)-Lubienski,A ICCF 2020 1/2 (30) } 18. Rg3 Rh7 19. Qxh3 Qd7 20. Qf1 Rdh8 21. Ng2 g5 22. h4 gxh4 23. Ngxh4 Rxh4 24. Nxh4 Rxh4 25. f3 Rh8 26. Rh3 Rg8 27. Rh5 Ng6 28. Qh3 a6 29. O-O-O Nd8 { Kokorin,V (2271)-Jung,R (2331) ICCF 2019 1/2 (57)}) 8. Bb3 (8. O-O Nc5 9. Bb3 Nxb3 10. axb3 d3 11. c3 Qd7 12. Ne1 h5 13. Qf3 h4 14. Nf5 Bxb3 15. h3 a6 16. Qxd3 Qxd3 17. Nxd3 Bc4 18. Ne1 Bxf1 19. Kxf1 g6 {Masset,J (1950)-Pinchon,F ICCF 2013 0-1 (49)}) (8. c3 Nc5 9. cxd4 exd4 10. O-O Bc4 11. Re1 Nd3 12. e5 Nxe1 13. Qxe1 Ne7 14. exf6 gxf6 15. Nh5 Kf7 16. Nxf6 Ng6 17. d3 Qxf6 18. dxc4 h6 19. Qa5 Bg7 {Mary,P (2195)-Opychaneyj,G ICCF 2005 1-0 (41)}) (8. d3 Qa5+ 9. c3 dxc3 10. O-O Nc5 11. Bc2 cxb2 12. Bxb2 Rd8 13. Rb1 Qxa2 14. Re1 b5 15. Nxe5 fxe5 16. Bxe5 Qa6 17. Nf5 Nf6 18. d4 Ncd7 19. Bc7 Rc8 {Hering,H-Klein,M (1990) ICCF 2011 1-0 (29)}) 8... Nc5 (8... Bxb3 9. axb3 d3 10. O-O Nb4 (10... Ne7 11. cxd3 Qxd3 12. Ne1 Qd7 13. d3 O-O-O 14. Be3 Kb8 15. f4 c5 16. fxe5 fxe5 17. Qc2 Nc6 18. Qc4 Nab4 19. Rf7 Qe8 20. Nf5 Rd7 21. Rxd7 Qxd7 22. Bxc5 {Kokorin,V (2156)-Räßler,A (2246) ICCF 2012 1/2 (33)}) 11. cxd3 (11. c3 Nc2 12. Ra4 Ne7 13. Ne1 Nxe1 14. Rxe1 Ng6 15. Nh5 (15. Qh5 Qb6 16. b4 O-O-O 17. Qg4+ Kb8 18. Nh5 c5 19. bxc5 Bxc5 20. Qf3 Qc7 21. b4 Bb6 22. b5 Qd7 23. c4 Rc8 24. Ba3 Rhd8 25. Ng3 Nf4 26. Nf5 Ne2+ {Cacheiro Martinez,M (1946)-Osuna Osuna,F (1651) ICCF 2017 1/2 (57)}) 15... b5 (15... Qd7 16. b4 Bd6 17. Re3 Bc7 18. Qf3 c5 19. b5 O-O 20. c4 Rfd8 21. Ra3 Qf7 22. b3 Qd7 23. Bb2 a6 24. h3 Nf4 25. b6 Bb8 26. Kh2 Nxh5 27. Qxh5 {Kerr,S (2554)-Einersen,E (2422) ICCF 2008 1/2 (56)}) 16. Ra1 b4 17. Qf3 Qd7 18. Qf5 Rd8 19. Qxd7+ Rxd7 20. Ra6 Kf7 21. Rxc6 Be7 22. Rf1 Rhd8 { Kokorin,V (2271)-Timofeev,A (2375) ICCF 2019 0-1 (41)}) 11... Nxd3 12. Ne1 (12. Qc2 Bc5 (12... h5 13. Ne1 Nxe1 14. Rxe1 h4 15. Ne2 h3 16. g3 Bb4 17. Rd1 c5 18. d3 Ne7 19. Bd2 Nc6 20. Bxb4 cxb4 21. Qc4 Qd6 22. d4 exd4 23. Nxd4 Rd8 24. Qe6+ {Vandermeulen,B (2586)-Nørrelykke,S (2449) ICCF 2007 1/2 (36)}) 13. Nf5 g6 14. Ne3 Nh6 15. Ne1 Nxc1 16. Rxc1 Bd4 17. b4 a6 18. Nf3 Nf7 19. Qc4 Ba7 20. d4 exd4 21. Ng4 Kf8 22. Rcd1 Qe7 23. Nxd4 Re8 {Marquardt,G (2227)-Rombaldoni,D ICCF 2016 1/2 (62)}) 12... Nh6 (12... Bc5 13. Qg4 Kf8 14. Qe2 Nxe1 15. Rxe1 Qb6 16. d4 Bxd4 17. Nf5 c5 18. b4 Qxb4 19. Nxd4 cxd4 20. f4 Qb6 21. Qc4 a5 22. fxe5 fxe5 23. b4 Qc6 24. Qa2 {Evans,S (1717)-Cosentino,A (1978) ICCF 2015 1-0 (61)}) 13. Qc2 Nxc1 14. Rxc1 (14. Qxc1 Qb6 (14... Bd6 15. Qc4 Nf7 16. Nf3 O-O 17. Nf5 Kh8 18. d4 Qb6 19. Rad1 Rad8 20. Rd3 Bb8 21. Rfd1 exd4 22. Rxd4 Qc7 23. Qc3 Rxd4 24. Rxd4 a6 25. g3 Ba7 26. Rd3 {Lloyd,G (2258)-Vertongen,W (2399) ICCF 2007 1/2 (43)}) 15. Qc4 O-O-O 16. Nf3 Kb8 17. Ra4 g5 (17... Bd6 18. b4 Rd7 19. b3 Rhd8 20. Rd1 Bf8 21. h3 a6 22. Nf1 Nf7 23. Ne3 Qb5 24. Re1 Nd6 25. Qc2 Nc8 26. Ra5 Qd3 27. b5 cxb5 28. Ra2 Ne7 29. Rb1 {Kokorin,V (2156)-Gus'kov,V (2338) ICCF 2012 0-1 (65)}) 18. d3 Bc5 19. b4 Be7 20. Rd1 Rd7 21. Qe6 Rhd8 22. h3 Ng8 23. d4 exd4 24. b5 Rd6 25. Qf7 cxb5 {Franzén,T (2336)-Evans,G (2362) ICCF 2009 0-1 (39)}) 14... Qb6 15. Nf3 O-O-O 16. Qc4 (16. h3 Qb5 17. Qc4 Qxc4 18. bxc4 Bb4 19. Rfd1 Nf7 20. Kf1 Rd3 21. Ne2 a5 22. Nc3 Rhd8 23. Ke2 Nh8 24. g3 Ng6 25. Na2 Nf8 26. Nxb4 axb4 27. Ne1 Rb3 {Kokorin,V (2186)-Serazeev,A (2531) ICCF 2016 0-1 (55)}) 16... Kb8 17. Nh5 Qc7 18. d4 exd4 19. h3 {Kokorin,V (2175) -Doronkin,S ICCF 2018 1/2 (58)}) (8... Qd7 9. Bxe6 Qxe6 10. d3 h5 11. h4 Bb4+ 12. Bd2 Bxd2+ 13. Qxd2 O-O-O 14. c4 dxc3 15. Qxc3 Nc7 16. a4 Ne7 17. d4 Ng6 18. O-O exd4 19. Nxd4 Qe5 20. Ngf5 {Hansen,K (2213)-Jensen,E (2210) ICCF 2008 1/2 (42)}) 9. d3 (9. Bxe6 Nxe6 10. d3 Qd7 (10... Bb4+ 11. Nd2 Qd7 12. O-O Ne7 13. Nc4 b5 14. a3 Bc5 15. Nd2 a5 16. Nb3 O-O 17. f4 exf4 18. Nxc5 Nxc5 19. Bxf4 Ne6 20. Bd2 c5 21. Nf5 Ng6 22. Qe1 {Sánchez Riera,X-Antonov,N (2346) ICCF 2012 1/2 (32)}) 11. O-O (11. Nd2 g6 12. Ne2 h5 13. Nc4 O-O-O (13... h4 14. h3 Nh6 15. Bd2 g5 16. a4 Nf7 17. Ng1 Nd6 18. Nxd6+ Bxd6 19. Nf3 Qe7 20. a5 Bb4 21. Nh2 a6 22. O-O Bxd2 {1/2 (22) Kokorin,V (2271)-Kudryavtsev,N (2278) ICCF 2019}) (13... Nh6 14. Bd2 O-O-O 15. Bxh6 Rxh6 16. Qd2 h4 17. h3 g5 18. O-O Rg6 19. f3 Nf4 20. Nxf4 gxf4 21. Kh1 Rg3 22. Qe2 Kb8 23. Rf2 Qc7 24. a3 Rg7 25. Qe1 {Kokorin,V (2223)-Glushenkov,S (2282) ICCF 2018 1/2 (57)}) 14. a4 Nh6 (14... h4 15. h3 Bd6 16. Bd2 f5 17. b4 Nf6 18. f3 g5 19. exf5 Nf4 20. O-O Bc7 21. b5 N6d5 22. Rf2 Rh6 23. Nc1 Qxf5 24. Qe1 Kb8 25. Nb3 b6 26. Qb1 {Kokorin,V (2271)-Eremin,V (2379) ICCF 2020 1/2 (46)}) 15. Bxh6 Rxh6 16. O-O (16. Qd2 Rh7 17. O-O h4 18. h3 Qe7 19. Rfb1 Qb4 20. Qd1 Rdd7 21. c3 dxc3 22. bxc3 Qe7 23. a5 Nc5 24. d4 Qe6 25. Nd2 Bh6 26. Qc2 Bxd2 27. Qxd2 Nxe4 {Kokorin,V (2157)-Zavrazhnov,A (2252) ICCF 2017 1/2 (37)}) 16... g5 17. Ng3 Ng7 18. h3 h4 19. Nh1 {Kokorin,V (2271) -Voigt,D (2200) ICCF 2020}) (11. a4 h5 12. h4 g6 13. O-O O-O-O 14. Bd2 c5 15. a5 Kb8 16. Ne2 Nh6 17. Qb1 Ng4 18. Qa2 Rc8 19. c3 Be7 20. Qa4 Rc6 21. b4 Rd6 22. Qxd7 Rxd7 {Kokorin,V (2157)-Nopin,V (2161) ICCF 2017 1/2 (64)}) (11. Bd2 O-O-O 12. h3 h5 13. a4 g5 14. a5 Kb8 15. a6 b6 16. Nh2 Nf4 17. O-O Bd6 18. Nf5 Ne7 19. Nxe7 Bxe7 20. Re1 Rdg8 21. Bxf4 exf4 22. Qd2 Rh7 {Fuhr,M (2217)-Ludwig, C (2342) ICCF 2014 0-1 (34)}) 11... O-O-O 12. a4 (12. Nd2 g6 (12... Qf7 13. Qf3 h5 14. h4 g5 15. Ne2 Ne7 16. Nc4 g4 17. Qg3 Bg7 18. f4 gxf3 19. Rxf3 Qe8 20. Qh3 Qd7 21. Bd2 Kb8 22. a4 Nc8 23. a5 Rde8 24. Ng3 {Kokorin,V (2188)-Benes,J (2148) ICCF 2013 1-0 (45)}) (12... Nh6 13. a4 Nf7 14. a5 (14. Nc4 g6 15. Qg4 Nd6 16. Nxd6+ Bxd6 17. a5 a6 18. Bh6 Kb8 19. c4 Bb4 20. Ra4 c5 21. Rd1 Qxa4 { 0-1 (21) Haak,G (2222)-Jozefini,L (1965) ICCF 2011}) 14... h5 15. Nxh5 Nd6 16. a6 b6 17. Qg4 Qf7 18. Ng3 Kb8 19. Ne2 g5 20. h3 Rh4 21. Qg3 Nf4 22. Re1 Rh6 23. Nf3 Qd7 24. Nh2 {Kokorin,V (2178)-Seidl,A ICCF 2014 1-0 (50)}) 13. a4 h5 14. h4 Nh6 (14... Kb8 15. a5 a6 16. Qf3 Nh6 17. Nc4 Ng4 18. Ne2 Bh6 19. Bxh6 Rxh6 20. Qg3 Qc7 21. f3 Nf4 22. Qe1 Ne3 23. Nxe3 dxe3 24. g3 Ne6 25. Qc1 g5 26. Qxe3 { Kokorin,V (2183)-Zoll,D (2221) ICCF 2013 0-1 (62)}) (14... Bd6 15. Nc4 Ne7 16. Rb1 Bc7 17. Qf3 Rdf8 18. b4 f5 19. Ne2 f4 20. Qh3 g5 21. hxg5 Rhg8 22. b5 Nf5 23. g6 Rxg6 24. bxc6 Qxc6 25. Rb5 Ng5 26. Qxh5 {Ryan,P (2205)-Hassim,U (2317) ICCF 2017 0-1 (35)}) 15. Nc4 Nf7 16. a5 Be7 17. a6 b6 18. Bd2 Rdg8 19. Qe1 Bd8 20. Kh2 g5 21. f3 Nh6 22. Nf5 Nxf5 23. exf5 Ng7 {Kokorin,V (2156)-Shpakovsky,A (2507) ICCF 2012 0-1 (46)}) 12... h5 13. h3 (13. h4) 13... h4 (13... Bb4 14. a5 Ne7 15. Nh4 g6 16. a6 b6 17. Nf3 Rdg8 18. h4 Kb8 19. Kh1 Bd6 20. Kh2 c5 21. c3 g5 22. Qa4 Qc8 23. Rh1 Nf4 24. Kg1 g4 25. Ne1 {Kokorin,V (2186)-Shcherbatyuk,S (2261) ICCF 2016 0-1 (46)}) 14. Ne2 g5 (14... Kb8 15. Bd2 g5 16. Nh2 Nh6 17. Kh1 Bd6 18. Nc1 Rdg8 19. Nb3 Nc7 20. f3 Ne6 21. Na5 Nf4 22. Re1 Nh5 23. b4 Bc7 24. Nc4 b5 25. Na3 a6 26. Kg1 {Kokorin,V (2186)-Olano Aizpurua,J (2175) ICCF 2016 0-1 (61)}) 15. Bd2 g4 16. hxg4 Qg7 17. Nh2 h3 18. g3 Nh6 (18... Kb8 19. f3 Bd6 20. b4 Rh7 21. Qb1 Nh6 22. Kf2 Qe7 23. Rh1 Nf7 24. Nf1 Rdh8 25. b5 cxb5 26. Qxb5 Rc8 27. Qb2 Qc7 28. Qb3 Nc5 29. Qb1 Rch8 30. Rh2 {Kokorin,V (2186)-Gromov, S (2248) ICCF 2016 1/2 (69)}) 19. f3 {Kokorin,V (2186)-Petruzzelli,R (2072) ICCF 2016 1/2 (57)}) 9... Nxb3 10. axb3 c5 (10... Ne7 11. Nd2 b5 12. O-O Ng6 13. Nf3 Qd7 14. Bd2 Bc5 15. Ba5 O-O 16. h3 Be7 17. Bd2 c5 18. Qe2 Rfc8 19. Rfc1 Bf8 20. Qd1 Rab8 21. Rcb1 Rb7 22. Ne1 {Taksrud,V (2066)-Glørstad,T (2388) ICCF 2013 0-1 (56)}) 11. O-O Ne7 12. Ne1 Qd7 13. f4 exf4 14. Bxf4 Nc6 15. Nf3 Be7 16. e5 f5 17. Ng5 g6 {Fuhr,M (2160)-Soldano,G (2252) ICCF 2015 0-1 (43)}) (6. Be2 Qd7 (6... Nc6 7. O-O (7. b3 Qd7 8. O-O h5 9. Nh4 Bf7 10. a4 O-O-O 11. a5 a6 12. d3 g6 13. Re1 Kb8 14. Bd2 Na7 15. h3 Nb5 16. Qc1 Ne7 17. Nf3 Nc6 18. Ra4 Be7 {Fuhr,M (2249)-Schyndel,A (2271) ICCF 2012 0-1 (35)}) (7. h4 Qd7 8. d3 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 Nge7 11. h5 Nd8 12. c3 c5 13. b4 dxc3 14. Qxc3 cxb4 15. Qxb4 Ndc6 16. Qb2 O-O 17. O-O h6 18. Rad1 Rfd8 {Bialas,T (2281)-Giering,G (2252) ICCF 2017 0-1 (70)}) 7... Bc5 8. d3 Qd7 (8... Nge7 9. Nh4 Qd7 10. f4 exf4 11. Nh5 Ng6 12. Nf5 Bf8 13. a3 O-O-O 14. Bxf4 Nxf4 15. Nxf4 Kb8 16. Nxe6 Qxe6 17. Nh4 Ne5 18. Kh1 h5 19. c3 Ng4 20. cxd4 {Gaedtke,T-Groenhout,R (1810) ICCF 2015 1/2 (37)}) 9. c3 (9. Nh4 O-O-O 10. h3 Nge7 11. Bg4 Bxg4 12. Qxg4 h5 13. Qxd7+ Rxd7 14. a3 Bd6 15. Bd2 a6 16. b4 b6 17. Rfb1 g6 18. a4 Nd8 19. Ne2 g5 20. Nf3 Ne6 {Ormsby,A (2037)-Coyne,D (2274) ICCF 2013 0-1 (39)}) 9... a6 10. a3 (10. cxd4 Nxd4 11. Be3 O-O-O 12. Nxd4 Bxd4 13. Rc1 Kb8 14. Qc2 Rc8 15. b4 Ne7 16. a4 c5 17. Qd2 cxb4 18. Qxb4 Nc6 19. Qb1 g6 20. Rc2 a5 21. Bd2 Qd6 { Henri,J (2337)-Borstnik,A (2283) ICCF 2007 0-1 (46)}) (10. Bd2 Nge7 11. Qc2 O-O 12. h4 a5 13. h5 h6 14. Nh4 a4 15. c4 Rfb8 16. Rfb1 Bb4 17. Bf3 a3 18. b3 Bxd2 19. Qxd2 Nd8 20. b4 Nf7 21. b5 Ng5 {Allmer,C-Shabaev,V (2184) ICCF 2012 1-0 (42)}) 10... Nge7 11. b4 Ba7 12. c4 O-O 13. Nh4 Kh8 14. Rb1 b5 15. c5 g6 16. h3 a5 17. Bg4 f5 18. exf5 {Azevedo,J (2291)-Camps,J (2125) ICCF 2015 1-0 (29)}) ( 6... Nh6 7. O-O c5 8. Bb5+ Nd7 9. Qe2 (9. d3 g6 10. b3 Bg7 11. Bc4 Qe7 12. Bxe6 Qxe6 13. a4 O-O 14. Bd2 Nf7 15. Nh4 Bh6 16. Qc1 Bg5 17. Nf3 Bxd2 18. Nxd2 Nb8 19. Nc4 Na6 20. f4 exf4 {Bas Fortuny,M (2142)-Rosas,C (2261) ICCF 2005 1/2 (27) }) 9... g6 10. Bc4 Qe7 (10... Bxc4 11. Qxc4 Qe7 12. d3 Nf7 13. c3 Nd6 14. Qa4 b5 15. Qc2 Qe6 16. Bd2 Rc8 17. a4 b4 18. c4 h5 19. h3 Be7 20. Rae1 g5 21. Nh2 Nf8 22. Qd1 {Ekebjærg,O (2635)-Kofidis,S (2592) ICCF 1999 1/2 (37)}) 11. c3 Nf7 12. a4 Nd8 13. Bd5 h5 14. Nh4 Qf7 15. d3 g5 16. Bxe6 Nxe6 17. Nf3 h4 18. Nf5 { Azevedo,J (2331)-Bobel,P (2306) ICCF 2014 1/2 (31)}) (6... g6 7. O-O Nc6 8. d3 h5 9. Nh4 Bf7 10. c4 Qe7 11. a3 O-O-O 12. b4 f5 13. b5 Nb8 14. Nxg6 Bxg6 15. exf5 Be8 16. Qa4 a6 17. Bf3 Bh6 18. Rb1 {Vandermeulen,B (2586)-Rozenberg,D (2486) ICCF 2008 0-1 (74)}) (6... Ne7 7. d3 (7. O-O g6 8. h4 Nec6 9. b3 Qd6 10. a4 Qd7 11. Bb5 a6 12. Bc4 Bg4 13. c3 dxc3 14. dxc3 Qxd1 15. Rxd1 Na5 16. Bd5 c6 17. b4 cxd5 18. bxa5 dxe4 {Foster,K (2263)-Arppi,H (2323) ICCF 2008 1/2 (33)}) 7... Ng6 8. O-O c5 9. Nh5 Nc6 10. Kh1 b5 11. a4 b4 12. b3 Qd7 13. Ng1 Bd6 14. Bh6 Bf8 15. f4 exf4 16. Bxf4 O-O-O 17. Bg3 Rg8 18. Rf2 {Beday,A (1998) -Mironchik,A (2144) ICCF 2014 1-0}) 7. O-O (7. d3 c5 (7... h5 8. Nh4 Bf7 9. c4 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 Nc6 12. b4 O-O-O 13. b5 Nce7 14. h3 Kb8 15. a4 Nh6 16. a5 g5 17. Nhf5 Nexf5 18. Nxf5 Nxf5 19. exf5 {Dominici,T-Tombette,P (2437) ICCF 2009 0-1 (45)}) 8. Nh4 g6 9. Bd2 Nc6 10. a3 Nh6 11. Qc1 Nf7 12. O-O Be7 13. b3 a6 14. Qb2 b5 15. b4 c4 16. dxc4 bxc4 17. c3 d3 18. Bd1 f5 {Wilshusen,H (1532)-Rotaru,I (2237) ICCF 2017 0-1 (35)}) (7. a3 Bd6 8. Nh4 Ne7 9. O-O Nbc6 10. c4 Ng6 11. Nhf5 O-O 12. Nxd6 Qxd6 13. d3 Qd7 14. f4 Nxf4 15. Bxf4 exf4 16. Rxf4 Ne5 17. b4 a5 18. b5 g6 {Baumann,W (2052)-Owens,S (1988) ICCF 2009 0-1 (54)}) 7... g6 (7... Nc6 8. d3 (8. Bb5 a6 (8... O-O-O 9. d3 Nge7 10. Nd2 h5 11. Nb3 Qd6 (11... Bf7 12. Ne2 a6 13. Ba4 h4 14. f4 h3 15. g3 Qd6 16. Nd2 exf4 17. gxf4 Kb8 18. Nf3 f5 19. Ng5 Bh5 20. Qd2 fxe4 21. dxe4 d3 22. cxd3 Bxe2 23. Qxe2 {Destruels Moreno,F (2307)-Silva,M (2319) ICCF 2009 1/2 (49)}) 12. Nxh5 g6 13. Ng3 f5 14. f4 Bg7 15. h3 Rdf8 16. c4 a6 17. Ba4 Kb8 18. Bd2 Bc8 19. Qf3 g5 20. Nxf5 {Kriksciunas,B (2305)-Rimkus,B (2001) ICCF 2009 1-0 (61)}) 9. Ba4 h5 10. Ne2 h4 11. d3 O-O-O 12. Ne1 h3 13. g3 Bc5 14. Bd2 Nge7 15. b4 Bb6 16. b5 Na7 17. c4 axb5 18. cxb5 Kb8 19. Bb4 f5 {Destruels Moreno,F (2307)-Nepustil,F (2320) ICCF 2009 0-1 (46)}) 8... h5 (8... O-O-O 9. c4 (9. a3 h5 10. Nh4 Bf7 11. c4 dxc3 12. bxc3 g5 13. Nhf5 h4 14. Nh1 Nge7 15. Ne3 Kb8 16. Qc2 Ng6 17. Rd1 Be6 18. h3 Nf4 19. Bg4 Bc5 20. Bxe6 Qxe6 {Nielsen,J (2016)-Arnold,E (1974) ICCF 2014 1/2 (28)}) (9. c3 h5 (9... Kb8 10. cxd4 exd4 11. a3 Nge7 12. Nd2 g6 13. b4 h5 14. h4 Bg7 15. b5 Ne5 16. a4 f5 17. Nf3 Rhf8 18. Bg5 f4 19. Nh1 Nxf3+ 20. Bxf3 Bf6 21. Bxf4 {Foster,K (2283)-Pecka,J (2337) ICCF 2010 1-0 (53)}) 10. cxd4 h4 11. Nxh4 Rxh4 12. d5 Bxd5 13. exd5 Nd4 14. Be3 g6 15. Rc1 Ne7 16. Bxd4 Rxd4 17. Rc4 Nxd5 18. Rxd4 exd4 19. Bf3 Nf4 20. Ne2 Ne6 {Hansen,K (2227) -Cimins,A (2280) ICCF 2007 1/2 (26)}) 9... Kb8 (9... h5 10. h4 Nge7 (10... Nce7 11. Bd2 Kb8 12. b4 g5 13. hxg5 h4 14. gxf6 Ng6 15. Nf5 Bxf5 16. exf5 Qxf5 17. Ng5 Qxf6 18. Bf3 h3 19. g3 Bh6 20. Ne4 Qe7 21. Nc5 Bxd2 22. Nxb7 {Vandermeulen, B (2586)-Córdoba,H (2538) ICCF 2008 1-0 (49)}) 11. Qa4 Ng6 12. Rb1 Nf4 13. b4 Kb8 14. c5 Ne7 15. b5 b6 16. c6 Qc8 17. Bxf4 exf4 18. Nf5 Nxf5 19. exf5 Bxf5 20. Nxd4 Bg4 21. Rbe1 {Azevedo,J (2302)-Krüger,H (2323) ICCF 2015 1/2 (38)}) 10. a3 h5 11. Nh4 g5 12. Ng6 h4 13. Nxh8 hxg3 14. fxg3 Qh7 15. Bg4 Bxg4 16. Qxg4 Qxh8 17. b4 Nh6 18. Qe6 Bg7 19. b5 Re8 20. Qh3 {Azevedo,J (2302)-Martynov, A (2365) ICCF 2015 1/2 (49)}) (8... g6 9. c3 O-O-O 10. c4 (10. cxd4 exd4 11. Bd2 Nge7 12. Qa4 Kb8 13. b4 h5 14. Rfc1 h4 15. Nf1 h3 16. g3 Nc8 17. a3 Be7 18. Qc2 g5 19. b5 Ne5 20. a4 g4 21. Ne1 Rhg8 {Henri,J (2337)-Kariz,P (2393) ICCF 2007 1/2 (40)}) 10... h5 11. a3 h4 12. Nh1 Bxc4 13. dxc4 d3 14. Qxd3 Qxd3 15. Bxd3 Rxd3 16. Be3 Na5 17. Rac1 Ne7 18. b4 Nb3 19. Rcd1 Rc3 20. c5 {Glanville,C (2106)-Pinchon,F ICCF 2013 0-1 (32)}) 9. Nh4 Bf7 10. c4 g5 (10... g6 11. Bd2 ( 11. a3 Nd8 12. b4 Ne6 13. Rb1 Nf4 14. Bf3 O-O-O 15. Qc2 Kb8 16. a4 g5 17. Nhf5 g4 18. Bd1 h4 19. Bxf4 exf4 20. Ne2 Ne7 21. Nxe7 Bxe7 22. Nxf4 f5 {Azevedo,J (2272)-Grego,L (2306) ICCF 2016 1/2 (42)}) 11... Nd8 12. b4 Ne6 13. a4 Ne7 14. b5 a6 15. Qc2 Bg7 16. Rfb1 O-O 17. b6 a5 18. bxc7 Qxc7 19. Qd1 Nc5 20. Qc1 Nc6 21. Rb5 b6 22. Ra3 {Azevedo,J (2302)-Teeriaho,T (2339) ICCF 2015 1/2 (68)}) 11. Nf3 h4 (11... O-O-O 12. h4 g4 13. Nh2 Nce7 14. f3 gxf3 15. Bxf3 Ng6 16. Bxh5 Nxh4 17. Bg4 Be6 18. Bxe6 Qxe6 19. Qg4 Qxg4 20. Nxg4 Rd7 21. Nf5 Nxf5 22. Rxf5 Rdh7 23. Nf2 {Azevedo,J (2285)-Troia,M (2213) ICCF 2017 1/2 (33)}) 12. Nf5 h3 13. g3 Nge7 14. Nxe7 Bxe7 15. Bd2 a5 16. Ne1 Be6 17. Nc2 b6 18. b3 O-O-O 19. a3 {Azevedo,J (2285)-Khanas,V (2256) ICCF 2017 1-0 (41)}) (7... Bd6 8. c3 c5 9. d3 Ne7 10. Nh4 (10. h3 Nbc6 11. Nh2 Bc7 12. c4 Ng6 13. Bh5 O-O 14. Bg4 Bxg4 15. Nxg4 Nf4 16. a3 Rae8 17. Rb1 Ba5 18. Nf5 Ne6 19. h4 g6 20. Ng3 h5 21. Nh2 Kg7 { Allmer,C-Maguire,G ICCF 2013 1-0 (87)}) 10... Nbc6 11. Nhf5 O-O 12. c4 a6 13. Bg4 b5 14. b3 Rab8 15. h3 Rb7 16. Qf3 bxc4 17. bxc4 Nxf5 18. exf5 Bf7 19. Ne4 { Berlinger,G (2498)-Sakhabeev,R (2413) ICCF 2007 1/2 (25)}) (7... Ne7 8. d3 Nbc6 (8... Ng6 9. h3 Bd6 10. Nh2 O-O 11. Bg4 c5 12. Bxe6+ Qxe6 13. Nf5 Ne7 14. Nxe7+ Bxe7 15. f4 Nc6 16. f5 Qf7 17. Nf3 c4 18. g4 cxd3 19. cxd3 Rac8 20. Bd2 { Ekebjærg,O (2635)-Volchok,A (2602) ICCF 1999 1/2 (34)}) 9. Nh5 O-O-O 10. c4 Ng8 11. a3 g6 12. Ng3 h5 13. h4 Nce7 14. b4 Kb8 15. b5 g5 16. hxg5 Ng6 17. a4 h4 18. Nf5 Bxf5 19. exf5 {Vandermeulen,B (2586)-Lounek,J (2523) ICCF 2007 1-0 (40) }) (7... h5 8. Nxh5 Nc6 9. Ng3 g5 10. d3 g4 11. Ne1 Qh7 12. h3 gxh3 13. Bh5+ Kd8 14. f4 exf4 15. Bxf4 Bd6 16. Qd2 Kd7 17. Bxd6 cxd6 18. Bd1 Kc7 19. Nh5 { Ackermann,B-Tsikunov,A ICCF 2017 0-1}) 8. b4 (8. d3 h5 9. Nh4 Bf7 10. c3 Nc6 11. Re1 O-O-O 12. Bd2 Kb8 13. h3 Bh6 14. a4 Bf4 15. a5 Nh6 16. a6 b6 17. Nf3 g5 18. h4 gxh4 19. Nxh4 Bg5 {Bas Fortuny,M (2142)-Martín Molinero,R (2391) ICCF 2005 0-1 (30)}) 8... a6 (8... h5 9. Nh4 Bf7 10. a4 Bxb4 11. c3 Bc5 12. cxd4 Bxd4 13. Rb1 b6 14. Nf3 h4 15. Nxd4 Qxd4 16. Bb2 Qd6 17. Nh1 h3 18. g3 Nc6 19. a5 O-O-O 20. Bc3 {Azevedo,J (2285)-Rodríguez Fraga,Y (2153) ICCF 2017 0-1 (58)} ) 9. a3 h5 10. h4 Nh6 11. Bb2 c5 12. bxc5 Nc6 13. Ne1 Bxc5 14. Nd3 Be7 15. a4 Nb4 (15... O-O-O 16. Qb1 g5 17. Ba3 gxh4 18. Qb6 hxg3 19. Bxe7 gxf2+ 20. Kxf2 Qxe7 21. Nc5 Nb8 22. Qxe6+ Qxe6 23. Nxe6 Rd6 24. Ng7 Nd7 25. Nxh5 Rc6 26. Ra2 Nf7 27. a5 {Azevedo,J (2285)-Tapia,A ICCF 2017 1/2 (27)}) 16. Ba3 Nxd3 17. Bxd3 Bxa3 {Azevedo,J (2331)-Shishkov,P (2381) ICCF 2014 1/2 (29)}) (6. d3 Bb4+ (6... g6 7. Be2 h5 8. Nh4 Bf7 9. c3 Nc6 10. Bd2 f5 11. Nf3 h4 12. Bg5 Be7 13. Bxe7 Qxe7 14. Nf1 fxe4 15. dxe4 O-O-O 16. Qa4 h3 17. Ng3 hxg2 18. Rg1 {Wilshusen,H (1434)-Meller,E (1888) ICCF 2018 0-1}) (6... Bd6 7. Be2 Ne7 8. O-O Qd7 9. c4 Nbc6 10. a3 a5 11. Ne1 a4 12. f4 exf4 13. Nh5 Ng6 14. Nxf4 Nxf4 15. Bxf4 Bxf4 16. Rxf4 O-O 17. Bg4 Bxg4 18. Qxg4 {Badger,J (1759)-Kirk,T (1573) ICCF 2019 1/ 2 (32)}) 7. Nd2 g6 8. a3 Bf8 9. Be2 h5 10. h4 Qd7 11. c3 Nc6 12. c4 a5 13. Qa4 Nd8 14. Qc2 a4 15. O-O Nh6 16. Nf3 Be7 17. Bd1 Ng4 {Laurent,C (2095)-Ermolaev, A (2205) ICCF 2007 0-1 (43)}) (6. Bd3 Nc6 7. c3 Qd7 8. O-O O-O-O 9. Bb5 a6 10. Bxc6 Qxc6 11. cxd4 exd4 12. d3 Qb6 13. b4 Ne7 14. a4 Qxb4 15. Bd2 Qd6 16. Qc2 Nc6 17. Rfc1 Qd7 {De Smet,K (2243)-Clement,P (2293) ICCF 2012 1/2 (52)}) (6. Bc4 Bxc4 7. d3 Bf7 8. c3 Nc6 9. O-O Qd7 10. cxd4 Nxd4 11. Nxd4 Qxd4 12. Be3 Qd7 13. Rc1 b6 {0-1 (13) Riihimäki,V (1976)-Mujunen,M (1914) ICCF 2017}) 6... Nc6 ( 6... Qd7 7. Bc4 Bxc4 8. bxc4 Nc6 9. O-O h5 10. h3 h4 11. Ne2 O-O-O 12. d3 g5 13. Nh2 b6 14. Ng4 Kb7 15. Rb1 Be7 16. Bd2 Nh6 17. f3 Nxg4 18. fxg4 {Augereau, C (2166)-Kaczmarek,R (2163) ICCF 2020 1/2 (28)}) 7. Bc4 (7. Bb5 Qd7 8. Qe2 (8. c3 d3 9. b4 Nge7 10. Ba4 Ng6 11. O-O a5 12. b5 Nd8 13. Bb3 a4 14. Bxa4 Nf4 15. Bb3 Qxb5 16. Rb1 Qc6 17. Bb2 Bc5 18. Rc1 h5 {Doorn,J (2223)-Diele,R ICCF 2007 0-1 (25)}) (8. h3 O-O-O 9. d3 h5 10. a3 h4 11. Ne2 g5 12. Nh2 Nh6 13. f3 Be7 14. Bc4 Bxc4 15. bxc4 f5 16. exf5 Qxf5 17. Bd2 Kb8 18. O-O Rhf8 19. a4 Bb4 { Taksrud,V (2134)-Debnár,I (2136) ICCF 2019 1-0 (53)}) 8... Nge7 9. Bc4 h5 10. Bxe6 Qxe6 11. h4 Ng6 12. Qc4 Qxc4 13. bxc4 Nb4 14. Kd1 d3 15. c3 Nc6 16. Nf1 O-O-O 17. Ne3 Bc5 {0-1 (17) Keast,D (2195)-Turaga,M (2259) ICCF 2017}) 7... Bxc4 (7... Qd7 8. O-O (8. Bxe6 Qxe6 9. a3 (9. c3 O-O-O 10. cxd4 Nxd4 11. Nxd4 Rxd4 12. O-O Ne7 13. d3 Qd7 14. Qc2 Rxd3 15. b4 g6 16. Rb1 a6 17. a4 Nc6 18. b5 Nb4 19. Qc4 a5 20. Be3 Kb8 {Tosi,F (2317)-Pilarska,L ICCF 2009 1/2 (58)}) (9. c4 h5 10. d3 h4 11. Nf1 Bb4+ 12. Bd2 h3 13. g3 Bc5 14. a3 a5 15. Bc1 g5 16. N1d2 Nge7 17. Bb2 b6 18. Qc2 O-O-O 19. O-O-O Kb7 20. Kb1 Ng6 {Glanville,C (2042)-Sherwood,R (2270) ICCF 2014 0-1 (45)}) 9... g5 10. d3 h5 11. h4 g4 12. Nd2 O-O-O 13. b4 Nce7 14. Nc4 Rh7 15. f4 exf4 16. Bxf4 Ng6 17. Bd2 N8e7 18. Qe2 Bg7 19. b5 Ne5 {Franzén,T (2129)-Rosenhek,M (2081) ICCF 2014 1/2}) (8. d3 O-O-O (8... h5 9. h3 O-O-O 10. Bd2 Ba3 11. O-O h4 12. Ne2 g5 13. Nh2 Nge7 14. Qe1 Ng6 15. Rb1 Be7 16. Bxe6 Qxe6 17. Ng4 Nf4 18. b4 Qxa2 19. b5 Nb8 20. Nxf4 {Franzén, T (2276)-Wójcik,W (2280) ICCF 2006 1-0 (52)}) 9. Bxe6 Qxe6 10. a3 h5 11. h4 g6 12. b4 Nh6 13. b5 Nb8 14. O-O Ng4 15. a4 Bb4 16. Bd2 Be7 17. Qb1 Nd7 18. a5 Nc5 19. Qb2 Qd7 {Blake,M (1999)-Tieken,F ICCF 2006 1-0 (49)}) (8. Rb1 h5 9. Nh4 Bf7 10. Bxf7+ Qxf7 11. h3 O-O-O 12. Qf3 g6 13. O-O Be7 14. Qe2 f5 15. Nf3 f4 16. Nh1 g5 17. Qc4 Qg6 18. Ne1 g4 19. h4 Bxh4 {Nielsen,J (1942)-Rach,J ICCF 2007 0-1}) (8. a3 h5 9. Bxe6 Qxe6 10. h4 d3 11. cxd3 O-O-O 12. Bb2 Rxd3 13. b4 Nge7 14. Qc2 Qd7 15. Ne2 Ng6 16. Rh3 a6 17. Rc1 Rh6 18. Kf1 f5 19. exf5 e4 { Kriksciunas,B (2308)-Mustonen,T (2098) ICCF 2006 1/2 (54)}) 8... O-O-O (8... h5 9. d3 (9. h3 h4 10. Bxe6 Qxe6 11. Ne2 O-O-O 12. a3 g5 13. Nh2 Nh6 14. d3 Rg8 15. f3 Ne7 16. b4 Kb8 17. Bd2 Ng6 18. Ng4 Nf4 19. Nxf4 gxf4 20. Qe1 Rd6 { Nagel,H (2140)-Ristea,T (2338) ICCF 2013 0-1 (31)}) 9... h4 10. Bxe6 Qxe6 11. Nf5 h3 12. N3h4 Nge7 13. Qg4 Kd7 14. g3 g5 15. Nf3 Nxf5 16. Qxf5 Qxf5 17. exf5 Bb4 18. Nd2 Bc3 19. Rb1 Bxd2 20. Bxd2 {Wyder,B (1909)-Hauser,J (2143) ICCF 2008 1/2 (25)}) 9. h3 (9. a4 h5 10. Bxe6 Qxe6 11. h4 g5 12. d3 Nge7 13. hxg5 h4 14. gxf6 hxg3 15. fxe7 gxf2+ 16. Kxf2 Bxe7 17. Rh1 Qg4 18. Rxh8 Rxh8 19. Qf1 Nb4 20. Nxe5 Rf8+ {Luppi,D (2345)-Detela,W (2325) ICCF 2007 1/2 (46)}) 9... Kb8 (9... h5 10. Nh4 Bc5 11. Bxe6 Qxe6 12. Nxh5 Rd7 13. Qg4 Qxg4 14. hxg4 Nh6 15. Ng6 Rh7 16. Ng3 d3 17. c3 a5 18. Nf5 Nxg4 19. a4 Nh2 20. Re1 Ng4 21. Rf1 { Lloyd,G (2258)-Venturelli,F (1935) ICCF 2007 0-1 (63)}) 10. Kh2 h5 11. d3 h4 12. Ne2 g5 13. Nd2 Bd6 14. Bxe6 Qxe6 15. Nc4 Nh6 16. f3 Be7 17. Rb1 f5 18. b4 Bxb4 19. Bxg5 {Nielsen,J (2033)-Blake,M (1949) ICCF 2012 1/2}) 8. bxc4 Bc5 ( 8... d3 9. O-O (9. cxd3 Qxd3 10. Qb3 Nb4 11. Kd1 Qd7 12. Ke2 Rd8 13. Ba3 Qd3+ 14. Kd1 Qxb3+ 15. axb3 Nd3 16. Rf1 Bxa3 17. Rxa3 a6 18. Ne1 Ne7 19. Nxd3 Rxd3 20. Kc2 Rd4 {Nielsen,J (2039)-La Valle,L ICCF 2010 1/2 (34)}) 9... Bc5 10. Nf5 Qd7 11. Rb1 (11. cxd3 g6 12. Ne3 Qxd3 13. Qb3 O-O-O 14. Nd5 Qxe4 15. d3 Qg4 16. Qb5 Bb6 17. Be3 Qd7 18. Qb2 Bxe3 19. fxe3 Nge7 20. Rab1 b6 21. e4 Rhf8 22. Qb5 Kb7 {Nielsen,J (1983)-Jørgensen,B (2239) ICCF 2009 1/2 (40)}) 11... O-O-O 12. Rb3 (12. Rb5 b6 13. cxd3 Nge7 14. d4 Nxd4 15. N5xd4 Bxd4 16. Ba3 a6 17. Bxe7 axb5 18. Bxd8 Rxd8 19. Qb3 bxc4 20. Qxc4 Bc5 21. a4 Qd3 22. Qe6+ Kb7 23. Qf5 h5 {Henri,J (2337)-Westera,B ICCF 2007 0-1 (40)}) 12... dxc2 13. Qxc2 Nge7 14. Nxe7+ Qxe7 15. d3 a6 16. Be3 Bxe3 17. fxe3 Qc5 {Glanville,C (2025)-Farkas,L (2173) ICCF 2015 0-1 (38)}) 9. d3 Nge7 10. O-O Qd7 11. Bd2 (11. Nh4 O-O-O 12. Nhf5 g6 13. Nxe7+ Bxe7 14. f4 h5 {0-1 (14) Keast,D (2206)-Jenkinson,S (2237) ICCF 2015}) (11. Nd2 O-O 12. Nb3 Bb4 13. a3 Bc3 14. Nc5 Qc8 15. Rb1 b6 16. Na4 Ba5 17. f4 f5 18. fxe5 fxe4 19. Nxe4 Nxe5 20. Rb5 {Kriksciunas,B (2308) -Marjamäki,M (2159) ICCF 2006 1/2 (73)}) 11... O-O 12. Rb1 a6 13. h3 Rab8 14. Nh2 b5 15. cxb5 {Keast,D (2233)-Lloyd,G (2287) ICCF 2012 0-1 (43)}) (3... Nc6 4. Ng3 (4. c3 Nf6 5. Nf3 e5 6. cxd4 exd4 7. Qa4 Qd7 8. Nexd4 Nxd4 9. Qxd4 Qxd4 10. Nxd4 Nxe4 11. Nb5 Kd8 12. Nc3 Bf5 13. f3 Nd6 14. d4 Be7 15. Kf2 Bf6 { Wyder,B (2028)-Blattner,K (2287) ICCF 2009 1/2 (61)}) 4... a6 (4... Qd6 5. Bb5 (5. Nf3 h5 6. c3 (6. h3 h4 7. Ne2 e5 8. d3 a5 9. Bd2 a4 10. c3 a3 11. b3 Nge7 12. cxd4 exd4 13. Rc1 Ng6 14. Rxc6 Qxc6 15. Nexd4 Qc5 16. Be2 Bd6 17. O-O O-O { Wyder,B (1909)-Schneider,H (2208) ICCF 2007 1-0 (40)}) 6... d3 7. h4 Bg4 8. Nf5 Bxf5 9. exf5 Nh6 10. Qa4 O-O-O 11. Qe4 e6 12. fxe6 f5 13. Qxd3 Qxd3 14. Bxd3 Rxd3 15. Kd1 Be7 16. Kc2 Rd6 {O'Neill-MCAleenan,C (1956)-Emrich,E (2084) ICCF 2011 0-1 (27)}) (5. a3 Nf6 6. Bb5 h5 7. d3 h4 8. N3e2 h3 9. gxh3 Bxh3 10. Nxh3 Rxh3 11. Bxc6+ bxc6 12. Bf4 e5 13. Bg3 Nh5 14. c3 dxc3 15. bxc3 Nxg3 16. fxg3 Rd8 {Tosi,F (2404)-Haraldsson,H (2389) ICCF 2007 0-1 (33)}) (5. c3 h5 6. Bb5 h4 7. Nf1 e5 8. Qf3 Nf6 9. h3 Be6 10. d3 O-O-O 11. c4 Nb4 12. Ke2 c6 13. Ba4 Nxe4 {0-1 (13) Wettering,G (1824)-Basque,R (1954) ICCF 2007}) 5... e5 6. a3 (6. c3 Nge7 7. Nf3 h5 8. h4 a6 9. Bc4 b5 10. Bb3 d3 11. a4 b4 12. Ng5 Nd8 13. Bc4 f6 14. Nf3 Be6 15. Bxe6 Nxe6 16. cxb4 Ng6 17. b3 Ngf4 {Kokorin,V (2161)-Maiorov,O (2109) ICCF 2012 0-1 (46)}) (6. Nf3 Nge7 7. O-O a6 8. Ba4 (8. Bc4 h5 9. Ng5 Nd8 10. Ne2 f6 11. Nf3 Be6 12. Bb3 Bxb3 13. axb3 Ne6 14. d3 O-O-O 15. h4 Nc6 16. Ng3 g6 17. Ra4 Kb8 18. Bd2 Qc5 19. Rc4 Qb5 {Rybák,M (2434)-Andéer,S (2446) ICCF 2012 0-1 (64)}) 8... h5 9. Nf5 Nxf5 10. exf5 b5 11. Bb3 Be7 12. a4 Na5 13. Re1 Nxb3 14. cxb3 Bf6 15. Nxe5 O-O 16. f4 Bxf5 17. Qxh5 g6 {Larsson,M (2290) -Karpenko,A (2254) ICCF 2013 0-1 (44)}) 6... Nge7 7. d3 Be6 8. Nf3 a6 9. Bc4 Bxc4 10. dxc4 g6 11. Qd3 Bg7 12. Bd2 Nd8 13. O-O Ne6 14. b4 b6 15. c3 dxc3 16. Qxc3 {Brodda,W (2490)-Schön,A (2481) ICCF 2006 0-1 (47)}) (4... g6 5. Bb5 Qd6 ( 5... Nf6 6. f4 Bh6 7. Nf3 O-O 8. d3 Ng4 9. O-O e5 10. fxe5 Bxc1 11. Qxc1 Ncxe5 12. Nxe5 Nxe5 13. Qf4 Qd6 14. Ba4 a5 15. a3 Ra6 16. Bb3 Be6 17. Bxe6 {Justesen, A (2183)-Prado,J (2383) ICCF 2009 1/2 (36)}) 6. Bxc6+ Qxc6 7. d3 Bg7 8. h3 Bd7 9. f4 f5 10. Nf3 fxe4 11. dxe4 Qa6 12. e5 c5 13. b4 b6 14. bxc5 bxc5 15. Qd3 Bb5 16. Qa3 {Kokorin,V (2161)-Sirotkin,V (2164) ICCF 2015 1/2 (52)}) (4... Nf6 5. Nf3 g6 6. Bb5 Bg7 7. Bxc6+ (7. O-O O-O 8. d3 Nd7 9. Bxc6 bxc6 10. Bd2 Rb8 11. Qc1 Re8 12. Bh6 Bxh6 13. Qxh6 e5 14. b3 Qe7 15. c3 dxc3 16. Rfc1 Nf8 17. Rxc3 Bg4 18. Qe3 Bxf3 {Taksrud,V (2157)-Løvholt,T (2210) ICCF 2007 1/2 (37)}) 7... bxc6 8. d3 O-O 9. O-O (9. Bf4 Bg4 10. h3 Bxf3 11. Qxf3 Nd7 12. O-O e5 13. Bc1 Nc5 14. Re1 Rb8 15. b3 Ne6 16. Nf1 c5 17. Qg3 c6 18. h4 h5 19. Nd2 Qa5 20. Kf1 Qc3 {Eschert,U (1999)-Tieken,F (1967) ICCF 2011 1-0 (67)}) 9... Rb8 10. Ne5 Qd6 11. Nc4 Qd7 12. f4 c5 13. f5 Ba6 14. Ne5 Qe8 15. b3 Nd7 16. Nxd7 {Nielsen, J (1983)-Feldborg,B (2238) ICCF 2009 1-0 (40)}) 5. a3 (5. Bc4 Nf6 (5... Ne5 6. Bb3 d3 (6... Nf6 7. d3 h5 8. h3 h4 9. N3e2 e6 10. a4 c5 11. f4 Ng6 12. Nf3 Be7 13. O-O O-O 14. Bd2 Bd7 15. Qe1 Qc7 16. Ng5 Qc8 17. g4 hxg3 18. Nxg3 {Nielsen, J (1998)-Yoshino,T (1830) ICCF 2014 1-0 (52)}) 7. Nf3 dxc2 8. Qxc2 Nxf3+ 9. gxf3 e5 10. d3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Qd6 13. f4 exf4 14. Nh5 Nf6 15. Nxf4 O-O 16. O-O-O a5 17. Bc2 {Larsson,M (2293)-Ochoa Ramírez,J ICCF 2012 1-0 (42)}) 6. d3 e5 7. a3 Qd6 (7... g6 8. h3 Qe7 9. Nf3 Be6 10. Bxe6 Qxe6 11. O-O O-O-O 12. b4 Nd7 13. Bd2 h5 14. Qb1 h4 15. Ne2 Bh6 16. Bxh6 Rxh6 17. a4 Qe7 18. b5 Nb4 19. bxa6 {Tosi,F (2308)-Preuße,G (2233) ICCF 2011 1-0 (48)}) 8. Nf3 Be6 9. O-O Bxc4 10. dxc4 g6 11. Qd3 Bg7 12. b4 O-O 13. Bd2 Rfe8 14. Rfd1 Qe7 15. h4 b6 16. h5 Nxh5 {Ormsby,A (2065)-Coleby,R (2060) ICCF 2012 1-0 (100)}) (5. Be2 g6 6. Nf3 e5 7. Bc4 h5 8. h3 h4 9. Ne2 Qd6 10. d3 Na5 11. Bb3 Nxb3 12. axb3 Be6 13. Ng5 f6 14. Nxe6 Qxe6 15. c3 dxc3 16. bxc3 O-O-O {Justesen,A (2183)-Wójcik, W (2185) ICCF 2009 1/2}) (5. f4 Nf6 6. Bc4 e5 7. f5 Bc5 8. d3 Na5 9. Bb3 Nxb3 10. axb3 Bd7 11. Bd2 Qe7 12. Nh3 h5 13. Qf3 O-O-O 14. Nf2 h4 15. Ne2 g6 16. g4 hxg3 {Palmiero,O (2217)-Etchaleco,E (2162) ICCF 2010 0-1 (27)}) (5. Nf3 Bg4 6. h3 Bxf3 7. Qxf3 h5 8. Nxh5 e6 9. Ng3 Be7 10. a3 Qd6 11. Qb3 O-O-O 12. d3 Nf6 13. Ne2 Kb8 14. g3 Nd7 15. Bg2 g5 16. f4 f6 {Dominici,T-Laurent,C (2103) ICCF 2009 1/2 (49)}) (5. h3 e6 6. Nf3 Bd6 7. Ne2 e5 8. c3 Nf6 9. d3 O-O 10. cxd4 exd4 11. g3 Be6 12. a3 Re8 13. Bg2 Bc5 14. b4 Bb6 15. O-O Nh5 16. g4 Nf6 { Kokorin,V (2182)-Karasev,V (1898) ICCF 2017 1-0 (38)}) 5... Nf6 6. h3 h5 (6... e6 7. d3 Bd6 8. Nh5 Nxh5 9. Qxh5 h6 10. Nf3 g6 11. Qh4 Qxh4 12. Nxh4 g5 13. Nf3 Bd7 14. Bd2 Ke7 15. c3 e5 16. Be2 dxc3 17. bxc3 f6 18. Be3 {Kokorin,V (2179) -Markovich,M (2159) ICCF 2017 1-0 (47)}) 7. d3 e5 (7... h4 8. N3e2 e5 9. c3 dxc3 10. bxc3 Be6 11. Be3 Qd6 12. Nf3 O-O-O 13. Neg1 Na5 14. Ng5 Bb3 15. Qd2 Qc6 16. Qb2 Nd7 17. c4 Qg6 18. Bd2 Ba4 19. Bxa5 {Kokorin,V (2186)-Kurbasov,S (2158) ICCF 2016 0-1 (78)}) 8. Be2 h4 9. Nf1 Be7 10. Nf3 Be6 11. c3 O-O 12. N1d2 dxc3 13. bxc3 Nh5 14. Nb3 f5 15. exf5 {Kokorin,V (2161)-Malfait,A (2055) ICCF 2015 1-0 (38)}) (3... g6 4. Nf3 (4. Ng3 Bg7 (4... Nf6 5. Bc4 Bg7 6. d3 c5 (6... O-O 7. f4 c5 8. Nf3 b5 9. Bb3 Qc7 10. Qe2 Nfd7 11. a4 bxa4 12. Rxa4 Nb6 13. Ra1 a5 14. O-O Nc6 15. f5 a4 16. Bxf7+ Rxf7 17. Ng5 Rf6 18. Nxh7 {Larsson, M (2302)-Betker,J (2452) ICCF 2011 0-1 (47)}) 7. a4 Nc6 8. Bd2 Bg4 9. f3 Bd7 10. f4 Ng4 11. e5 Ne3 12. Bxe3 dxe3 13. Qc1 f6 14. e6 Bc8 15. Nf3 Qb6 16. O-O { Kokorin,V (2161)-Silin,V (2040) ICCF 2015 1-0 (41)}) (4... h5 5. Bc4 h4 6. N3e2 h3 7. Nxh3 Bxh3 8. gxh3 e6 9. d3 a6 10. Ng1 Nc6 11. Bb3 Bh6 12. Bxh6 Rxh6 13. Qf3 Nf6 14. Qf4 Rh5 15. h4 Rc5 16. O-O-O {Azevedo,J (2272)-Pereira,E (2300) ICCF 2016 1/2 (39)}) 5. Bc4 Nc6 6. f4 Qd6 (6... h5 7. e5 h4 8. Ne4 Bf5 9. Ng5 e6 10. d3 Na5 11. Bb5+ c6 12. Ba4 Ne7 13. N1h3 b5 14. Bb3 c5 15. Nf2 c4 16. dxc4 bxc4 17. Ba4+ Nac6 18. O-O {Dominici,T-Hervet,G (2310) ICCF 2010 1/2 (47)} ) 7. Nf3 Qxf4 8. O-O e6 9. d3 Qd6 10. e5 Nxe5 11. Bf4 Nxf3+ 12. Qxf3 Qc6 13. Ne4 f5 14. Ng5 Qxf3 15. Nxf3 Nh6 {Herzog,K (1982)-Önder,E ICCF 2006 1/2 (30)}) (4. c3 c5 (4... dxc3 5. bxc3 Bg7 6. d4 Nf6 7. Ng3 O-O 8. Nf3 c5 9. Be2 Qc7 10. O-O b6 11. Rb1 Rd8 12. Bg5 h6 13. Bd2 e6 14. e5 Ne8 15. Qa4 Bb7 16. Rfc1 { Glanville,C (2085)-Cañamas Soler,J (2274) ICCF 2013 0-1 (55)}) 5. cxd4 cxd4 6. Nf3 Nc6 7. Ng3 Bg7 8. Bc4 Nf6 9. O-O O-O 10. b3 Bg4 11. h3 Bxf3 12. Qxf3 a6 13. Bb2 Ne5 14. Qd1 h5 15. f4 Nxc4 {Matheis,T (2354)-Ribeiro,V (2456) ICCF 2007 0-1 (53)}) 4... Bg7 5. Ng3 (5. c3 c5 6. Nf4 Nf6 7. Bb5+ Bd7 8. Qe2 O-O 9. O-O Bg4 10. h3 Bxf3 11. Qxf3 Nbd7 12. d3 Ne5 13. Qe2 e6 14. Bc4 dxc3 15. bxc3 Nxc4 16. dxc4 Nd7 {Justesen,A (2000)-Bartsch,A (2230) ICCF 2010 0-1 (54)}) 5... Nf6 6. Bc4 Nc6 7. Bb5 (7. d3 Bg4 8. h3 Bh5 9. Nxh5 Nxh5 10. Bb5 Qd6 11. O-O a6 12. Bxc6+ bxc6 13. e5 Bxe5 14. Nxe5 Qxe5 15. Re1 Qf6 16. Bh6 Nf4 17. Qf3 Nd5 18. Qxf6 Nxf6 {Baffo,J-Lasley,M (1902) ICCF 2012 1-0 (31)}) (7. h3 O-O 8. O-O Qd6 ( 8... Nd7 9. d3 Nb6 10. Bb3 a5 11. a3 a4 12. Ba2 Qd6 13. Bg5 Be6 14. Bxe6 Qxe6 15. Bf4 Qf6 16. Ne2 e5 17. Bd2 Qd6 18. Qb1 Nd7 19. h4 Nd8 20. Qa2 {Lloyd,G (2235)-Hribersek,J (2341) ICCF 2007 0-1 (61)}) 9. d3 Nd7 10. Bd2 (10. a3 a5 11. Bg5 Nce5 12. Nxe5 Nxe5 13. Ba2 Be6 14. Bxe6 Qxe6 15. Bd2 Ra6 16. f4 Nd7 17. h4 h5 18. f5 Qd6 19. Ne2 Nf6 20. Bf4 Qc5 21. b4 axb4 {Tosi,F (2389)-Breuer,R ICCF 2008 1/2 (48)}) 10... Nb6 11. Bb3 a5 12. a3 a4 13. Ba2 Nd7 14. Ng5 h6 15. Nf3 Nc5 16. Nh2 Be6 17. Bxe6 Nxe6 18. f4 Nc5 {Nielsen,J (1983)-Petruzzelli,R (1997) ICCF 2010 1-0 (59)}) 7... O-O 8. Bxc6 bxc6 9. d3 Re8 10. O-O e5 11. b3 c5 12. Nd2 Ba6 13. Nc4 Rb8 14. Bd2 Bxc4 15. bxc4 {Foster,K (2312)-Trzcinski,I (2173) ICCF 2012 1/2 (26)}) (3... a6 4. Nf3 (4. d3 c5 5. g3 Nc6 6. Bg2 Nf6 7. Nf3 e5 8. O-O Bd6 9. h3 Be6 10. Ne1 Qd7 11. Kh2 Nh5 12. Nxd4 Nxg3 13. fxg3 exd4 14. Bf4 O-O 15. Qd2 f6 {Nagel,H (2182)-Blattner,K (2180) ICCF 2013 1/2 (39)}) (4. f4 c5 5. Nf3 Nc6 6. Ng3 Nf6 7. d3 g6 8. Bd2 Ng4 9. h3 Ne3 10. Qc1 e5 11. Bxe3 dxe3 12. Qxe3 exf4 13. Qxf4 Bd6 14. e5 Nxe5 15. Qe3 Qe7 {Nielsen,J (2027) -Seker,M ICCF 2014 0-1 (27)}) 4... c5 5. c3 (5. h3 Nc6 6. Ng3 e6 7. Bc4 Bd6 8. a4 Nge7 9. Qe2 Ng6 10. d3 O-O 11. O-O Rb8 12. Bd2 Bc7 13. c3 Nf4 14. Bxf4 Bxf4 15. Qc2 b5 16. axb5 axb5 {Fuhr,M (2217)-Lesko,A (2408) ICCF 2014 0-1 (45)}) 5... Nc6 6. cxd4 (6. d3 e5 7. Ng3 h5 8. h4 g6 9. Be2 Nh6 10. cxd4 cxd4 11. Bd2 Be7 12. a3 a5 13. Bxh6 Rxh6 14. Qa4 Bd7 15. Nf1 Kf8 16. N1d2 Kg7 17. Rc1 Rh8 { Moser,M (1806)-Ismayilova,A (2193) ICCF 2014 0-1}) 6... cxd4 7. Ng3 e5 8. Bc4 Bg4 9. O-O Qf6 10. Be2 h5 11. h3 Bxf3 12. Bxf3 h4 13. Ne2 d3 14. Nc3 Nd4 15. Nd5 {Taksrud,V (2089)-Frydendal,O (1794) ICCF 2012 1-0 (30)}) (3... Nf6 4. Ng3 h5 5. h4 Nc6 6. Nf3 Bg4 7. Bb5 Qd6 8. Nf5 Bxf5 9. exf5 O-O-O 10. Ng5 Qd5 11. Bxc6 Qxc6 12. O-O Rd5 13. Nxf7 Rg8 14. Qf3 Qd7 15. Re1 {Laurent,C (2092) -Hjortstam,K (2158) ICCF 2007 1/2 (45)}) 4. Ng3 (4. a4 Bg4 5. h3 Bh5 6. g4 Bg6 7. Ng3 Nc6 8. Bc4 e6 9. d3 Nf6 10. f4 Qc7 11. Nf3 O-O-O 12. Bd2 h5 13. Nh4 Bh7 14. g5 Nd7 15. a5 Bd6 {Markoja,J (2143)-Ermakov,V (2285) ICCF 2015 0-1 (56)}) 4... Nc6 (4... e6 5. Nf3 (5. Bc4 Nc6 (5... Nf6 6. d3 Nc6 7. Bd2 a6 8. a4 h5 9. f4 h4 10. N3e2 Rb8 11. a5 Ng4 12. Nf3 h3 13. g3 b6 14. axb6 Rxb6 15. Nc1 Ne3 16. Bxe3 dxe3 17. Ra2 {Kokorin,V (2157)-Khorunzhy,M (2213) ICCF 2017 1-0 (81)}) 6. a4 (6. Nf3 Bd6 7. c3 Nge7 8. O-O O-O 9. cxd4 cxd4 10. d3 Ng6 11. Ne2 Bb8 12. Bd2 Qd6 13. Bb5 Nge5 14. Ng3 a6 15. Bxc6 Nxc6 16. Rc1 e5 17. Nf5 Qf6 {Kokorin, V (2161)-Baklanov,V (2405) ICCF 2012 0-1 (73)}) 6... Nge7 (6... Nf6 7. d3 Bd7 8. Nh3 Be7 9. f4 O-O 10. O-O Qc7 11. Bd2 Rad8 12. Ng5 Bc8 13. e5 Nd5 14. N5e4 Kh8 15. Nh5 Rg8 16. Rf3 Ncb4 17. Rh3 f5 18. exf6 {Vandermeulen,B (2555) -Siikaluoma,A (2522) ICCF 2008 1/2 (84)}) 7. d3 (7. f4 e5 8. f5 Na5 9. Ba2 Nec6 10. Nf3 d3 11. c3 c4 12. b4 cxb3 13. Bxb3 Nxb3 14. Qxb3 f6 15. Ba3 Bxa3 16. Rxa3 b6 17. O-O Qe7 18. Nh1 Ba6 {Azevedo,J (2331)-Ottesen,S (2356) ICCF 2014 0-1 (51)}) 7... Na5 8. Ba2 Nec6 9. Bd2 Be7 (9... Nb4 10. Bxb4 cxb4 11. f4 Qc7 12. N3e2 b3 13. Bxb3 Nxb3 14. cxb3 Bb4+ 15. Kf2 f6 16. Nf3 {Azevedo,J (2300) -Jones,B (2342) ICCF 2017}) 10. f4 Nb4 11. Bxb4 cxb4 12. Nf3 Qc7 13. Ne2 Nc6 14. O-O Bd7 15. Qe1 O-O 16. Kh1 Rad8 {Stephan,J (2561)-Cruzado Dueñas,C (2595) ICCF 2013 1-0 (69)}) (5. e5 Ne7 6. f4 Bd7 7. Be2 Ng6 8. d3 Nh4 9. Bf3 Nc6 10. Be4 Be7 11. a3 Qb6 12. Qe2 O-O-O 13. Nf3 Nxf3+ 14. Bxf3 Bh4 15. O-O Bxg3 16. hxg3 Ne7 {Hale,A (1952)-Kline,J (1985) ICCF 2016 1-0 (44)}) 5... Nf6 6. Bb5+ ( 6. c3 Nc6 (6... h5 7. e5 Nfd7 8. cxd4 cxd4 9. Bb5 a6 10. Bxd7+ Nxd7 11. Qa4 d3 12. h4 b5 13. Qf4 Bb7 14. Ng5 Qe7 15. N5e4 Qb4 16. b3 f5 17. exf6 Nxf6 18. Nxf6+ {Taksrud,V (2066)-Hagen,T (2412) ICCF 2013 0-1 (28)}) 7. Bb5 Bd7 8. O-O a6 9. Bxc6 Bxc6 10. d3 dxc3 11. bxc3 b5 12. Bf4 Be7 13. Re1 O-O 14. h3 Rc8 15. Ne5 Bb7 16. a4 Nd7 17. axb5 axb5 {Manarin,F (1935)-Underwood,W (2052) ICCF 2018 0-1 (37)}) (6. Ne5 Nbd7 7. Nf3 Bd6 8. d3 O-O 9. Be2 Qc7 10. Bd2 b6 11. c3 dxc3 12. Bxc3 Bb7 13. Qc2 Ne5 14. Nd2 Nc6 15. Bd1 Rfd8 16. O-O Nb4 17. Bxb4 cxb4 {Volkov,I-Williams,J (1833) ICCF 2016 0-1 (54)}) 6... Bd7 7. Bxd7+ Nfxd7 8. d3 Bd6 9. O-O Nc6 10. c3 O-O 11. a4 Rc8 12. Ne2 Qb6 13. Qc2 Rfd8 (13... h6 14. Nd2 Nde5 15. Rd1 Rfd8 16. Nf4 Qa6 17. Nf1 c4 18. dxc4 Nxc4 19. Nd3 N4a5 20. Ra2 dxc3 21. bxc3 Nd4 {0-1 (21) Maddox,D (2014)-Greene,S (2266) ICCF 2010}) 14. Bg5 Be7 15. Bf4 e5 16. Bd2 {Henri,J (2386)-Figlio,G (2434) ICCF 2009 1/2 (27)}) (4... a6 5. Be2 (5. a4 Nc6 (5... Nf6 6. Be2 Nc6 7. d3 g6 8. Bd2 h5 9. h4 Ng4 10. Nf3 e5 11. Nf1 Be7 12. c4 O-O 13. Ng3 b6 14. Ng5 Qd7 15. Bxg4 Qxg4 16. Nf3 Qd7 17. Ng5 {Palmiero,O (2217)-Barria,V (2486) ICCF 2010 0-1 (32)}) 6. Bc4 h5 7. Nxh5 Ne5 8. Be2 d3 9. cxd3 Rxh5 10. Bxh5 Nxd3+ 11. Kf1 Qd4 12. Qe2 b6 13. Qe3 Bb7 14. e5 Nxe5 15. Qxd4 cxd4 16. Bf3 Nxf3 {Maruhn,R (2248)-Saarikoski,K (2213) ICCF 2015 1/2 (46)}) (5. Nf3 Bg4 6. Be2 Bxf3 7. Bxf3 e6 8. O-O Qc7 9. d3 Bd6 10. Bg4 Bxg3 11. fxg3 Nd7 12. c4 Ne7 13. Bd2 Nc6 14. Qe2 O-O 15. b3 Nde5 16. Bf4 Qe7 {Glanville,C (2116)-Fedukin,A (2248) ICCF 2013 1/2}) (5. e5 Nc6 6. f4 g6 7. Nf3 Bh6 8. d3 Bg7 9. Ne4 Nh6 10. g3 Nf5 11. Bg2 Nb4 12. O-O O-O 13. Nxc5 Qc7 14. a3 Nd5 15. Nb3 Nfe3 16. Qe2 Nxf1 {Vandermeulen,B (2568)-Gerbich,V (2450) ICCF 2012 1/2 (72)}) (5. Bc4 Nc6 (5... b5 6. Bd5 Ra7 7. d3 e6 8. Bb3 Qc7 9. c3 Nc6 10. Nf3 dxc3 11. bxc3 Nf6 12. O-O Be7 13. Re1 O-O 14. d4 Rd8 15. e5 Nd5 16. Ng5 Nxc3 17. Qd3 {Augereau,C (2166)-Taffijn,M (2126) ICCF 2020 1-0}) 6. d3 Nf6 7. Bb3 e6 8. f4 h5 9. Nh3 h4 10. Nf1 b5 11. Nd2 Na5 12. a4 c4 13. Ba2 Bb7 14. O-O Qb6 15. Ng5 Be7 16. Kh1 Nd7 {Ott,P (2110)-Popov,V (2124) ICCF 2017 1-0 (48)}) (5. f4 Nf6 6. Be2 Nc6 7. d3 e5 8. Nf3 exf4 9. Bxf4 Bd6 10. Bxd6 Qxd6 11. O-O O-O 12. Nh4 g6 13. Qd2 Qe7 14. Qh6 Ne5 15. h3 Nfd7 16. c3 a5 {Larsson, M (2286)-Karakas,S (2264) ICCF 2015 1/2 (48)}) 5... Nc6 6. d3 e5 7. Bg4 Bxg4 ( 7... g6 8. Bxc8 Rxc8 9. Nf3 Bg7 10. O-O Nf6 11. Bg5 O-O 12. Qd2 Qd6 {1/2 (12) De Smet,K (2199)-Sladek,V (2218) ICCF 2008}) 8. Qxg4 g6 (8... Nf6 9. Qe2 h5 10. Bg5 Qa5+ 11. Kf1 Qb6 12. b3 Nd7 13. Nxh5 c4 14. bxc4 Qb2 15. Rc1 Nb4 16. Qd1 Nxa2 17. Rb1 Nc3 18. Rxb2 Nxd1 19. Nxg7+ Bxg7 20. Rxb7 {Ormsby,A (2074) -Russell,M (2091) ICCF 2012 0-1 (32)}) 9. Qe2 Qb6 10. a3 Bg7 11. Nf3 Nf6 12. O-O h5 13. Bg5 Nd7 14. Rfb1 f6 15. Bd2 h4 16. Nf1 {Wright,D (1618)-Hoffman,D ICCF 2014 0-1 (29)}) (4... Nf6 5. e5 (5. Bc4 Bg4 (5... h5 6. d3 h4 7. N3e2 h3 8. Nxh3 Bxh3 9. gxh3 e6 10. Bd2 Qb6 11. c3 Nc6 12. cxd4 cxd4 13. O-O Bb4 14. Kg2 Bxd2 15. Qxd2 g5 16. f4 g4 17. h4 {Kokorin,V (2161)-Volkov,E (1994) ICCF 2012 1/2 (50)}) 6. f3 Bd7 7. Qe2 e6 8. Nh3 Nc6 9. O-O Qc7 10. f4 h5 11. d3 h4 12. Nh1 Na5 13. Bb3 Be7 14. Bd2 Nxb3 15. axb3 b6 16. Ng5 a5 {Nagel,H (2140) -Popov,V (2213) ICCF 2013 1-0 (47)}) 5... Nd5 6. c4 Nc7 7. d3 f5 (7... g6 8. f4 Bg7 9. Be2 O-O 10. h4 h5 11. Nh3 Qe8 12. Bf3 Nc6 13. Qe2 Rb8 14. Bxc6 Qxc6 15. f5 b5 16. b3 gxf5 17. Nf4 bxc4 18. bxc4 Bh6 19. O-O {Hale,A (1952)-Thomas,T (1980) ICCF 2016 1-0 (35)}) 8. Nh3 Bd7 9. Be2 g6 10. O-O Bg7 11. f4 Ne6 12. Kh1 (12. a3 a5 13. Nh1 O-O 14. g4 fxg4 15. Bxg4 Nc6 16. Ng3 Qc8 17. Qe2 Ng5 18. Nf2 Nh3+ 19. Bxh3 Bxh3 20. Nxh3 Qxh3 21. Ne4 Rab8 22. Nxc5 Nxe5 23. Bd2 Ng4 { Larsson,M (2281)-Weldon,D (2373) ICCF 2016 1/2 (40)}) 12... O-O 13. Bf3 Bc6 14. Bd2 a5 15. b3 Qd7 16. a4 {Vandermeulen,B (2563)-Telepnev,I (2470) ICCF 2012 0-1 (61)}) (4... Bd7 5. a3 (5. Bc4 e6 6. Nf3 Qa5 7. O-O b5 8. Be2 Nc6 9. Re1 a6 10. b3 Nge7 11. Bb2 Ng6 12. c3 e5 13. a4 bxa4 14. Rxa4 Qb6 15. Bc4 a5 16. Ra2 Rb8 {Kokorin,V (2186)-Panyushkin,B (2228) ICCF 2016 1/2 (71)}) (5. Nf3 a6 6. Bc4 e6 7. O-O b5 8. Be2 Nc6 9. a4 b4 10. d3 e5 11. Nd2 Nf6 12. Nc4 Be6 13. Bg5 Bxc4 14. dxc4 Be7 15. Nf5 O-O 16. Re1 Nd7 {Riihimäki,V (2036)-Palladino,M (1970) ICCF 2013 1/2 (33)}) 5... Qc7 6. Bc4 e6 7. Nf3 Nf6 8. d3 Bc6 9. O-O b5 10. Ba2 h6 11. Ne2 a6 12. h3 Bd6 13. b4 cxb4 14. axb4 Bxb4 15. Bf4 Qb7 16. Rb1 {Fuhr,M (2232)-Kuosmanen,K (2299) ICCF 2014 1-0 (76)}) (4... g6 5. f4 Bh6 6. Bb5+ Nd7 7. Nh3 Ngf6 8. O-O O-O 9. a4 a6 10. Be2 Nb8 11. f5 Nc6 12. d3 Bg7 13. Bf4 e6 14. e5 Nd5 15. f6 Nxf4 16. Rxf4 {Larsson,M (2281)-Fagerbekk,E (2296) ICCF 2016 1-0}) 5. Bc4 (5. Nf3 h5 (5... a6 6. Bc4 (6. a4 h5 7. Bc4 h4 8. Ne2 ( 8. Nf1 Nf6 9. d3 h3 10. gxh3 Bxh3 11. Ng3 e6 12. Rg1 Bg4 13. Bg5 Ne5 {0-1 (13) Evans,S (1738)-Joseph,P (2023) ICCF 2009}) 8... h3 9. Rg1 Bg4 10. Ng5 e6 11. d3 hxg2 12. Rxg2 Bh5 13. f4 Nf6 14. Bd2 Be7 15. Qc1 Nh7 16. Nh3 Bh4+ 17. Ng3 Qe7 { Keast,D (2280)-Bachmann,W (2440) ICCF 2006 0-1}) 6... e6 (6... Nf6 7. a3 Bg4 8. d3 e6 9. h3 Bxf3 10. Qxf3 Bd6 11. Qe2 Nd7 12. O-O Qh4 13. e5 Bxe5 14. Ne4 Qe7 15. Bg5 Bf6 16. Bf4 Nce5 17. Bb3 O-O 18. Rae1 {Herzog,K (2061)-Kaczmarek,R (1951) ICCF 2017 1/2 (42)}) 7. O-O b5 (7... Bd6 8. d3 Nge7 9. Ng5 (9. Qd2 O-O 10. Qg5 b5 11. Bb3 h6 12. Qg4 Ng6 13. Nh5 Qc7 14. Qh3 Bf4 15. Nxf4 Nxf4 16. Bxf4 Qxf4 17. Qh5 Qd6 18. Rfc1 Bd7 19. c4 Na5 20. Bd1 bxc4 {Heberlein,T-McCann, D ICCF 2014 0-1 (30)}) 9... h6 10. Qh5 O-O 11. Nh3 Ng6 12. a4 Qh4 13. Qxh4 Nxh4 14. f4 b6 15. Bd2 Rb8 16. Nf2 Na5 17. Bxa5 bxa5 18. e5 Be7 19. b3 {Manarin,F (1655)-Spasov,S (2370) ICCF 2008 0-1 (30)}) 8. Be2 h5 9. e5 h4 10. Ne4 Qc7 11. a4 b4 12. Re1 Nxe5 13. Nxe5 Qxe5 14. Bf3 Ra7 15. c3 d3 16. b3 h3 17. g3 { Baumann,W (1849)-Ryska,J (1958) ICCF 2011 1-0 (34)}) (5... e5 6. Bb5 f6 (6... Qc7 7. c3 Nf6 8. O-O a6 9. Bxc6+ bxc6 10. d3 Bd6 11. Nh4 g6 12. Bg5 Be7 13. f4 h6 14. Bxf6 Bxf6 15. Nf3 exf4 16. Ne2 g5 17. g3 Bh3 18. Rf2 {Berger,B-Miller,A ICCF 2014 0-1 (31)}) 7. O-O Bd7 8. d3 Nge7 9. Nd2 a6 10. Bc4 b5 11. Bb3 Ng6 12. a4 Nf4 13. Ne2 Bd6 14. Nxf4 exf4 15. Qh5+ g6 16. Qd5 Qe7 17. axb5 {Lugli, A-Grech,G (1807) ICCF 2011 1-0}) 6. Bb5 (6. h4 Bg4 (6... a6 7. a3 (7. d3 Nf6 8. Be2 Ng4 9. Bd2 g6 (9... e5 10. c3 g6 11. cxd4 Nxd4 12. Nxd4 Qxd4 13. O-O Be7 14. Bc3 Qd6 15. Qd2 b5 16. f4 b4 17. Bxe5 Nxe5 18. fxe5 Qxe5 19. Qf4 Qxf4 20. Rxf4 Bd6 21. Rf3 {Rouse,L-Astudillo Sandoval,I ICCF 2020 0-1 (41)}) 10. c4 e5 11. Nf1 b5 12. b3 Be7 13. Qc1 O-O 14. g3 f5 15. Ng5 Qd6 16. exf5 Bxf5 17. f3 Bxg5 18. hxg5 Bxd3 {Fuhr,M (2146)-Schubert,J (2070) ICCF 2015 0-1 (27)}) 7... Nf6 8. d3 g6 9. Be2 Ng4 10. O-O e5 11. c3 Be7 12. Bg5 f6 13. Bd2 dxc3 14. bxc3 Be6 15. Qc2 O-O 16. a4 Rb8 17. Qb2 Qd6 18. a5 {Stephan,J (2569)-Ham,S (2587) ICCF 2014 1/2 (72)}) (6... Nf6 7. Bb5 Qb6 8. c4 (8. a4 Bg4 9. O-O Nd7 10. Be2 e6 11. Ng5 d3 12. cxd3 Nde5 13. Nf3 Nxf3+ 14. Bxf3 Qd8 15. b4 Qxh4 16. Bb2 Rd8 17. Ra3 cxb4 18. Ra1 Rxd3 19. Qc2 Rxf3 {Trouillet,F (1838)-Comien,R ICCF 2014 0-1 (26)}) 8... g6 9. e5 Ng4 10. Bxc6+ Qxc6 11. d3 Bg7 12. Bf4 b5 13. Rc1 b4 14. O-O O-O 15. Qd2 a5 16. a3 b3 17. Ne4 a4 18. Rfe1 {Kokorin,V (2156) -Rodriguez,K (2370) ICCF 2012 1/2}) 7. Be2 (7. Bc4 e6 8. d3 Bd6 (8... Nge7 9. Ne2 Bxf3 10. gxf3 Ng6 11. Bg5 Qc7 12. Rh3 b5 13. Bb3 Bd6 14. Kf1 Rb8 15. Kg2 a6 16. a3 Nce7 17. c3 dxc3 18. bxc3 Bf4 19. Qe1 O-O 20. d4 {Riihimäki,V (1999) -Satosuo,R (1929) ICCF 2019 0-1 (69)}) 9. Ne2 Bxf3 10. gxf3 Nge7 11. Bg5 Ne5 12. Bb5+ Kf8 13. f4 Qa5+ 14. Kf1 Qxb5 15. fxe5 Bxe5 16. Rb1 Qd7 17. Rg1 f6 18. Bd2 Kf7 {Kokorin,V (2358)-Martynov,A (2330) ICCF 2010 0-1 (51)}) (7. Bb5 e6 8. Bxc6+ bxc6 9. d3 Bd6 10. Qd2 Rb8 11. Qg5 Qxg5 12. Nxg5 Ne7 13. b3 Ng6 14. Nf1 f6 15. f3 fxg5 16. Bxg5 O-O 17. fxg4 hxg4 18. O-O-O Rf2 {Wyder,B (2045) -Balshaw,A (2079) ICCF 2009 0-1 (40)}) 7... e6 (7... g6 8. d3 e5 9. c3 (9. Bd2 Bxf3 10. Bxf3 Be7 11. Qe2 Bxh4 12. Nf5 gxf5 13. exf5 Kd7 14. Qe4 Bg5 15. Qd5+ Ke8 16. Qxc5 Bxd2+ 17. Kxd2 Qg5+ 18. Ke2 Rc8 19. Bxc6+ Rxc6 20. Qxe5+ Re6 { Dumont,G (1648)-Bernaert,N ICCF 2017 0-1}) 9... Be7 10. Ng5 Nh6 11. Bd2 f6 12. Nf3 Kf8 13. Qb1 Kg7 14. Bd1 Be6 15. O-O Qb6 16. a3 Ng4 17. Ba4 Qa6 18. Bxc6 Qxc6 19. a4 {Kokorin,V (2271)-Anderskewitz,R (2401) ICCF 2019 1/2 (53)}) (7... Nf6 8. d3 e5 9. c4 g6 10. Qc2 Bg7 11. Bd2 a5 12. O-O Bxf3 13. Bxf3 Nd7 14. Ne2 Qxh4 15. Rfe1 Bh6 16. Bxh6 Rxh6 17. a3 Kf8 18. Qb3 b6 19. Qb5 {Nielsen,J (2027) -Fonteneau,B ICCF 2014 0-1 (30)}) 8. d3 (8. Ng5 d3 9. cxd3 Bd6 10. Bxg4 hxg4 11. Qxg4 Nf6 12. Qh3 Nd4 13. O-O Bf4 14. Nf3 Nxf3+ 15. gxf3 g5 16. h5 Bxg3 17. fxg3 Qd4+ 18. Rf2 Rxh5 {0-1 (18) Keast,D (2195)-Jones,B (2290) ICCF 2017}) 8... Bd6 9. Ng5 (9. Nf1 Nf6 10. a3 Qb8 11. Ng5 Bxe2 12. Qxe2 Qc7 13. Nd2 Ng4 14. Nc4 Nge5 15. Nxd6+ Qxd6 16. Bd2 Qe7 17. O-O Rc8 18. b4 f6 19. Nh3 cxb4 20. axb4 a6 {Fuhr,M (2249)-Lehtinen,P (2235) ICCF 2012 1/2 (44)}) 9... Bxg3 10. fxg3 Bxe2 ( 10... Nf6 11. O-O Qd6 (11... O-O 12. Nf3 Qd6 13. Bf4 e5 14. Bg5 Nh7 15. Bd2 Qe6 16. Nh2 Bxe2 17. Qxe2 Nf6 18. Rf3 Nb8 19. g4 hxg4 20. Rg3 Nc6 21. Rf1 Ne7 22. Nxg4 Nxg4 23. Rxg4 {Vorontsov,G (1790)-Ananikian,A ICCF 2013 0-1 (76)}) 12. Bxg4 hxg4 13. Bf4 e5 14. Bd2 Rc8 15. a3 b5 16. Qe2 a5 17. Rf2 a4 18. Raf1 Rc7 19. Qd1 Nb8 20. Qb1 O-O 21. Qa2 Nbd7 22. Kh2 {Kokorin,V (2188)-Zakharov,O (2274) ICCF 2013 0-1 (66)}) (10... Nh6 11. O-O Qd7 12. Nf3 f6 13. a4 Nf7 14. Bd2 Qc7 (14... a5 15. Nh2 Bxe2 16. Qxe2 O-O-O 17. Be1 b6 18. Nf3 Kb7 19. b3 Rdf8 20. Nd2 Nce5 21. Nc4 Ng4 22. Rc1 Nd6 23. Rb1 e5 24. c3 dxc3 25. Bxc3 Nc8 26. Rf3 {Kokorin,V (2178)-Oren,I (2291) ICCF 2014 1/2 (63)}) 15. Bf4 e5 16. Bd2 O-O-O 17. Nh2 Bxe2 18. Qxe2 Nd6 19. g4 hxg4 20. Qxg4+ Kb8 21. Nf3 Rde8 22. a5 { Kokorin,V (2179)-Räßler,A (2302) ICCF 2014 0-1 (80)}) (10... Qd6 11. Bf4 e5 12. Bd2 Nf6 13. O-O Bxe2 14. Qxe2 a5 15. Rf5 Ne7 16. Rf2 Ra6 17. Raf1 a4 18. Nh3 Qe6 19. Bg5 Qxa2 20. Bxf6 gxf6 21. Rxf6 Rxf6 22. Rxf6 {Vandermeulen,B (2586) -Pauwels,C (2538) ICCF 2008 1/2 (30)}) 11. Qxe2 Qc7 (11... e5 12. Bd2 Qd7 13. a3 a5 14. O-O f6 15. Nf3 Nge7 16. Nh2 a4 17. g4 hxg4 18. g3 Kd8 19. Nxg4 Qe6 20. c4 Ra6 21. Rab1 Rb6 22. h5 Rxh5 23. Nxf6 {Vorontsov,G (1790)-Popenkov,A (2311) ICCF 2013 1-0 (34)}) 12. O-O Nf6 13. Bf4 e5 14. Bd2 Ne7 15. Rf2 b6 16. Raf1 Neg8 17. Rf5 a5 {Kokorin,V (2178)-Silin,V (2285) ICCF 2014 1-0 (29)}) (6. Bc4 h4 7. Nf1 h3 (7... Nf6 8. Ng5 e6 9. d3 Nd7 10. f4 Be7 11. Qg4 Bxg5 12. Qxg5 Qxg5 13. fxg5 h3 14. g3 Nde5 15. Bb5 Bd7 16. Bxc6 Bxc6 17. b3 f5 18. Nd2 O-O 19. Ba3 {Ackermann,B-Parente,A (2032) ICCF 2017 0-1}) (7... Qa5 8. c3 Nf6 9. Qb3 e6 10. Qc2 h3 11. g3 b5 12. Be2 Bb7 13. d3 b4 14. Bd2 Be7 15. c4 Nd7 16. g4 f5 17. gxf5 exf5 18. Ng3 fxe4 19. dxe4 {Fuhr,M (2249)-Gudkov,A ICCF 2012 0-1 (41)}) 8. gxh3 (8. Rg1 Bd7 9. Qe2 Qa5 10. c3 e6 11. g4 Nge7 12. b4 Qc7 13. bxc5 Ng6 14. cxd4 Nf4 15. Qd1 Ng2+ 16. Ke2 Nxd4+ 17. Nxd4 Qxc5 18. d3 Qxd4 19. Rb1 Bc6 {Henri,J (2386)-Bensiek,N (2360) ICCF 2008 0-1 (41)}) 8... Bxh3 9. d3 f6 10. Bxg8 Rxg8 11. Ng5 Bxf1 12. Qh5+ g6 13. Qh7 Rg7 {0-1 (13) Rouse,L-Perkins,K (2024) ICCF 2020}) (6. Be2 h4 7. Nf1 h3 8. g3 Qa5 9. c3 e5 10. Qc2 Nf6 11. d3 Be7 12. N1d2 Ng4 13. O-O Qd8 14. Nb3 b6 15. Qd1 O-O 16. Nh4 Bxh4 17. Bxg4 Be7 { Fuhr,M (2249)-Mende,I (2312) ICCF 2012 1/2 (25)}) 6... h4 (6... Qb6 7. a4 h4 8. Ne2 a6 9. Bxc6+ Qxc6 10. d3 h3 11. g3 f6 (11... Qf6 12. Nd2 Bg4 13. f3 Bxf3 14. O-O Bxe2 15. Qxe2 Qc6 16. Nc4 Nf6 17. Bd2 g6 18. Rf2 Bg7 19. Raf1 Nd7 20. a5 Qe6 21. Bf4 f6 22. c3 Rc8 23. Qf3 {Franzén,T (2276)-Oomen,A (2276) ICCF 2006 1/ 2 (65)}) (11... b5 12. axb5 axb5 13. Ne5 Qb7 14. Rxa8 Qxa8 15. c3 Qa5 16. O-O dxc3 17. Nxc3 e6 18. Qb3 Ba6 19. Bf4 Ne7 20. Rc1 Rh7 21. Nf3 Ng6 22. Be3 Rh8 23. d4 {Kokorin,V (2161)-Poletaev,V (2075) ICCF 2015 1-0 (42)}) 12. Rg1 e5 13. b3 Be6 14. g4 Bd6 15. Nd2 Bc7 16. Rg3 Ne7 17. Nb1 O-O-O 18. Ng1 {Kokorin,V (2186)-Oppermann,P (2291) ICCF 2016 0-1 (54)}) 7. Bxc6+ (7. Ne2 h3 8. g3 Qc7 ( 8... Nf6 9. c3 Nxe4 10. cxd4 Bd7 11. O-O a6 12. Bxc6 Bxc6 13. Ne5 Ng5 14. Nxc6 bxc6 15. f3 Qd5 16. Qb3 cxd4 17. Qxd5 cxd5 18. f4 d3 19. Nc3 Ne4 20. Nxd5 { Justesen,A (2000)-Savegren,K (2427) ICCF 2010 0-1 (33)}) 9. O-O (9. a4 Bg4 10. Neg1 e5 11. d3 Nge7 12. Bd2 O-O-O 13. Bc4 f6 14. a5 Kb8 15. a6 b6 16. Qb1 g5 17. Qa2 Bd7 18. Ne2 Bh6 {0-1 (18) Ormsby,A (2037)-Evans,D (2285) ICCF 2013}) 9... Bg4 10. Nf4 (10. Ne1 a6 11. Bxc6+ Qxc6 12. f3 Bd7 13. Nd3 f6 14. b4 c4 15. Nc5 e5 16. Nxd7 Qxd7 17. Rb1 d3 18. Nc3 Rd8 19. cxd3 Qxd3 20. f4 exf4 21. gxf4 f5 {Herzog,K (1982)-Iriarte Gómez,E (2249) ICCF 2006 0-1 (29)}) 10... g5 11. Nd3 Bh5 12. c4 Bg7 13. Nxc5 a6 14. Ba4 O-O-O 15. Nd3 Rh6 16. e5 Nxe5 17. Ndxe5 Bxe5 18. Qe2 Bg7 {O'Neill-MCAleenan,C (1904)-Brewer,S ICCF 2009 0-1 (27)}) 7... bxc6 8. Ne2 h3 9. g3 Nf6 (9... Qa5 10. O-O Qc7 11. d3 e5 12. b3 Bg4 13. Nd2 Bd6 14. f3 Be6 15. Kh1 Ne7 16. f4 Bg4 17. Nc4 Ng6 18. f5 Nf8 19. Qd2 Be7 20. Ng1 Nd7 21. Ba3 {Kokorin,V (2186)-Shchebenyuk,M (2175) ICCF 2016 1-0 (62)}) (9... e5 10. d3 (10. Nxe5 Qe7 11. f4 f6 12. Nf3 Bg4 13. O-O Qxe4 14. d3 Qd5 15. Ne1 O-O-O 16. Rf2 Re8 17. c3 Nh6 18. f5 dxc3 19. Bxh6 cxb2 20. Rb1 c4 21. d4 c3 { Vorontsov,G-Zemlyanov,S (2414) ICCF 2012 0-1 (30)}) 10... Bd6 (10... f6 11. Nd2 Nh6 12. f3 Be6 13. O-O Nf7 14. b3 Qc7 15. Kh1 O-O-O 16. Nc4 Be7 17. Nb2 Nd6 18. Bd2 Kb7 19. Qe1 Rb8 20. c4 Ka8 21. Ng1 Nf7 22. Rb1 {Kokorin,V (2161) -Groß-Winter,G (2303) ICCF 2015 1/2 (47)}) 11. Bg5 Qd7 12. c3 Rb8 13. Qc2 Qg4 14. Neg1 f5 15. O-O-O fxe4 16. dxe4 Nf6 17. Bxf6 gxf6 18. Nd2 Rh7 19. Ngf3 Be6 20. cxd4 cxd4 21. Qxc6+ {Kokorin,V (2183)-Polyakov,D (2305) ICCF 2015 0-1 (38)} ) 10. d3 Ng4 11. Bf4 (11. Bg5 Rb8 12. Qc1 Qa5+ 13. Bd2 Qc7 14. b3 e6 15. a4 e5 16. Nh4 Be7 17. f3 Nh6 18. O-O Qd6 19. Bg5 Qd8 20. Bxh6 Rxh6 21. Nf5 Bxf5 22. exf5 Kf8 {Palm,W (2319)-Kovac,S (2341) ICCF 2011 1/2 (95)}) (11. Nd2 e5 12. Ng1 Be6 (12... f6 13. Nc4 Be6 14. b3 g6 15. Qe2 Bh6 16. Nf3 Qc7 17. O-O g5 18. Nb2 Bf8 19. Na4 Be7 20. Nd2 c4 21. Nxc4 c5 22. f3 Nh6 23. c3 Nf7 24. Ba3 {Azevedo, J (2285)-Blondel,F (1823) ICCF 2017 1/2 (48)}) 13. Nc4 Bxc4 14. dxc4 Qd7 15. f3 Nf6 16. Qd3 Bd6 17. Bd2 Bc7 18. Ne2 Kf8 19. O-O-O g6 20. Kb1 Qe6 21. Rhf1 Kg7 22. Bg5 Nd7 {Franzén,T (2271)-Tsygankov,E (2258) ICCF 2011 0-1 (27)}) (11. c3 e5 12. Qa4 Rb8 13. Bg5 f6 14. Bc1 dxc3 15. Nxc3 Qxd3 16. Nd2 Be6 17. Qxa7 Rc8 18. a4 g6 19. Qb6 Bh6 20. Ne2 Bxd2+ {0-1 (20) Justesen,A (2183)-Lukasevicius,P (2094) ICCF 2009}) 11... f6 12. O-O (12. Bc1 a5 13. Nh4 g5 14. Ng6 Rg8 15. Nxf8 Rxf8 16. O-O Qd6 17. f3 Ne5 18. f4 gxf4 19. Bxf4 Bg4 20. Qd2 Kd7 21. Rae1 a4 22. Nc1 Rfb8 23. c3 a3 {Vorontsov,G-Ovdienko,M ICCF 2012 0-1 (57)}) 12... e5 ( 12... Kf7 13. Nc1 e5 14. Bd2 Be6 15. c4 Qd7 16. Qe1 Bd6 17. Kh1 Kg8 18. Qe2 a5 19. a4 Nh6 20. Qe1 Qb7 21. Rb1 Qc7 22. Ng1 Nf7 23. f3 g6 24. Nge2 {Kokorin,V (2161)-Kireev,V (2215) ICCF 2015 1/2 (72)}) 13. Bd2 Bd6 14. Nc1 g5 15. Nb3 a5 16. a4 Nh6 {Kokorin,V (2179)-Golubenko,A (2201) ICCF 2017 0-1 (58)}) (5. f4 h5 (5... Nf6 6. Bb5 Bd7 (6... Qa5 7. Bxc6+ bxc6 8. Nf3 h5 9. h4 Ba6 10. Ne5 c4 11. O-O d3 12. cxd3 cxd3 13. b3 Ng4 14. Qe1 Nxe5 15. fxe5 g6 16. Qf2 Qb6 17. Ba3 Qxf2+ 18. Rxf2 {Kokorin,V (2205)-Bars,J (2395) ICCF 2018 1/2 (36)}) (6... Qc7 7. Bxc6+ Qxc6 8. d3 g6 9. Nf3 Bg7 10. a4 b6 11. O-O O-O 12. Bd2 Nd7 13. a5 e5 14. Qc1 Re8 15. b3 b5 16. f5 c4 17. Bh6 Bf6 18. Ng5 {Kokorin,V (2157) -Starodubtsev,V (2276) ICCF 2017 1-0 (40)}) 7. Bxc6 Bxc6 8. d3 e6 9. Nf3 h5 10. O-O h4 11. Nh1 h3 12. g3 Qc7 13. Nf2 Be7 14. Bd2 Kf8 15. Ng5 Kg8 16. Nfxh3 b6 17. a4 {Kokorin,V (2157)-Kireev,V (2203) ICCF 2017 1-0 (43)}) (5... Qc7 6. d3 ( 6. Bb5 Qxf4 7. Bxc6+ bxc6 8. Nf3 Qc7 9. e5 f5 10. exf6 exf6 11. O-O Ne7 12. Qe1 Ba6 13. d3 O-O-O 14. Bd2 Nd5 15. Ba5 Nb6 16. Qf2 Rd5 17. b3 Qd7 {Kokorin,V (2250)-Merkuriev,V (2278) ICCF 2019 1/2 (63)}) 6... g6 7. Be2 e5 8. f5 h5 9. fxg6 fxg6 10. Nf3 h4 11. Nf1 h3 12. g3 Qg7 13. Ng5 Qe7 14. Nf3 Nf6 15. a4 Be6 16. Ng5 Bg8 17. Nf3 {Larsson,M (2281)-Cumming,D (2280) ICCF 2016 0-1 (67)}) 6. Bb5 (6. Nxh5 Qd6 7. d3 Qg6 (7... e5 8. f5 g6 9. Ng3 Nh6 10. Qf3 gxf5 11. exf5 Qd7 12. h4 Nxf5 13. Ne4 Qe6 14. g3 Nb4 15. Rh2 Be7 16. Bh3 Qg6 17. Bg5 Bxg5 18. hxg5 Ke7 19. O-O-O {Kokorin,V (2182)-Syasin,D ICCF 2017 1/2 (27)}) 8. Ng3 Rxh2 9. Qf3 Rxh1 10. Nxh1 Bg4 11. Qf2 e5 12. f5 Qh7 13. Ng3 Be7 14. Nf3 Bxf3 15. gxf3 Bh4 16. Bd2 Nf6 17. Qh2 Ke7 {Rickert,W (2262)-Bolz,J (2295) ICCF 2016 1/2 (47)}) (6. e5 h4 7. Ne4 Bf5 8. d3 Qd5 9. Qe2 c4 10. a3 e6 11. Nf3 O-O-O 12. Nfd2 cxd3 13. cxd3 Nh6 14. b4 Kb8 15. Nc4 Ng4 16. h3 Ne3 17. Bxe3 dxe3 { Roig García,J (1756)-de Mingo Matías,J (2128) ICCF 2016 0-1 (37)}) (6. Nf3 h4 7. Ne2 Nf6 8. d3 Bg4 9. Neg1 e5 (9... e6 10. Be2 c4 11. Bd2 Qb6 12. b3 Bxf3 13. Nxf3 c3 14. Bc1 Ng4 15. O-O Ne3 16. Bxe3 dxe3 17. Kh1 h3 18. g3 Ba3 19. Ng5 a5 20. Bg4 Nd4 21. Re1 {Larsson,M (2287)-Henderson,G (2265) ICCF 2016 0-1 (57)}) 10. fxe5 Nxe5 11. Be2 h3 12. Nxh3 Bxh3 13. gxh3 Nfd7 14. Nxe5 Qh4+ 15. Kf1 Qxh3+ 16. Kg1 Nxe5 17. Qf1 Qxf1+ {Kokorin,V (2175)-Kögeler,A (2159) ICCF 2018 1/2 (44)}) 6... h4 (6... Bd7 7. Bxc6 (7. Nxh5 e5 8. f5 Qg5 9. Ng3 Rxh2 10. Qf3 Rxh1 11. Nxh1 a6 12. Bxc6 Bxc6 13. d3 Qe7 14. Qh3 c4 15. Nf3 Nf6 16. Nf2 O-O-O 17. Bd2 Re8 18. g4 cxd3 {Larsson,M (2290)-Shilon,B ICCF 2013 1/2 (33)}) 7... Bxc6 8. d3 h4 9. Nf1 f5 10. Nd2 fxe4 11. dxe4 Nf6 12. Qe2 Qa5 13. Nh3 Nxe4 14. O-O Nd6 15. Qe5 Nf7 16. Qe2 Qa6 17. Qxa6 bxa6 18. b3 {Kokorin,V (2271)-Loisel, D (2328) ICCF 2019 1/2 (60)}) 7. N3e2 (7. Nf1 Qa5 8. Bxc6+ bxc6 9. Kf2 c4 10. d3 Nf6 11. h3 Ba6 12. Nf3 cxd3 13. cxd3 Nd7 14. N1h2 Nc5 15. Ne1 Rb8 16. Nhf3 f6 17. Qc2 e6 18. e5 Kf7 {Kokorin,V (2271)-Slawinski,T (2404) ICCF 2019 1/2 (47)}) 7... Bd7 8. Nf3 h3 9. g3 (9. gxh3 Qc7 10. Bxc6 Bxc6 11. d3 e6 12. Bd2 O-O-O 13. Ng3 Bd6 14. e5 Bf8 15. Qe2 Rxh3 16. b3 b5 17. Rf1 Rh8 18. f5 exf5 19. Nxf5 g6 20. Ng3 Re8 {Roig García,J (1751)-Hild,H ICCF 2016 0-1 (37)}) 9... Qb6 (9... e6 10. Neg1 f6 11. Bf1 g5 12. fxg5 fxg5 13. g4 Nh6 14. Nxh3 Nxg4 15. Nhxg5 Qa5 16. Rg1 Nge5 17. a4 O-O-O 18. Bb5 c4 19. b3 d3 20. cxd3 Qb6 21. Kf1 { Bialas,T (2281)-Hesse,O (2426) ICCF 2017 0-1}) (9... Nf6 10. Bxc6 Bxc6 11. d3 e6 12. Ne5 c4 13. Nxc4 Nxe4 14. dxe4 Bxe4 15. Rf1 Rc8 16. Ne5 Rxc2 17. Nd3 Qc7 18. Rf2 Qc4 19. Nxd4 Bxd3 20. Nxc2 Qe4+ {1/2 (20) Bialas,T (2281)-Gabel,A (2313) ICCF 2017}) 10. c4 a6 (10... f5 11. exf5 O-O-O 12. d3 Nh6 13. Bd2 Bxf5 14. Qa4 Bxd3 15. Bxc6 Qxc6 16. Qxc6+ bxc6 17. Ne5 Bf5 18. Ng1 e6 19. Ngf3 Kb7 20. O-O-O Bd6 21. Rde1 g6 22. Ba5 {Kokorin,V (2250)-Alifanov,O (2265) ICCF 2019 1/2 (59)}) 11. Ba4 e6 12. d3 f5 13. O-O Nf6 14. exf5 exf5 15. Bd2 O-O-O 16. Rb1 Ng4 {Kokorin,V (2223)-Smirnov,B (2252) ICCF 2018 0-1 (46)}) (5. Bb5 Bd7 (5... Qb6 6. a4 (6. Bxc6+ Qxc6 7. d3 e5 8. f4 Bd6 9. Nh5 g6 10. fxe5 Bxe5 11. Nf3 Bc7 12. Nf4 Ne7 13. O-O O-O 14. Bd2 h6 15. Qe1 g5 16. Nh5 Qg6 17. Ng3 f5 { Risdon,A (1927)-Turczynski,M (2331) ICCF 2013 0-1 (55)}) 6... a6 (6... g6 7. d3 (7. Nf3 Bg7 8. O-O Nf6 9. d3 O-O 10. Bc4 e5 11. Bd2 Qc7 12. h3 Bd7 13. Qc1 Ne8 14. Bh6 Qd6 15. a5 Be6 16. Bxe6 Qxe6 17. h4 Nf6 18. h5 Bxh6 {Kokorin,V (2254) -Grobler,D (2217) ICCF 2011 1/2 (33)}) 7... Bg7 8. Nf3 Nf6 9. Ne5 O-O 10. Bxc6 bxc6 11. O-O Qc7 12. f4 Ne8 13. b3 Bxe5 14. fxe5 Qxe5 15. Bf4 Qe6 16. Qd2 Ng7 17. Qa5 Qd7 18. Bh6 {Ormsby,A (2065)-Popov,V (2199) ICCF 2012 1/2 (30)}) 7. Bc4 (7. Bxc6+ Qxc6 8. d3 g6 9. Nf3 Bg7 10. O-O e5 11. Nd2 Ne7 12. Nc4 Be6 13. b3 O-O 14. a5 h5 15. h3 Rae8 16. Re1 {1/2 (16) Mailfert,J (2320)-Hervet,G (2260) ICCF 2011}) 7... Nf6 8. Nf3 Bg4 9. h3 Bxf3 10. Qxf3 h5 11. Qe2 h4 12. Nf1 Qc7 13. d3 e6 14. Nd2 Bd6 15. Nf3 Nh5 16. c3 Nf4 17. Bxf4 {Azevedo,J (2331) -Glatthaar,M (2398) ICCF 2014 0-1 (69)}) (5... e6 6. Nf3 Nf6 7. O-O Bd7 8. d3 Be7 9. c3 dxc3 10. bxc3 Qc7 11. d4 O-O 12. Qe2 cxd4 13. cxd4 a6 14. Bd3 Nb4 15. Ba3 Rfc8 16. Bxb4 Bxb4 17. Rab1 {Lautenbach,W (2209)-Hasidume,S (1656) ICCF 2005 1-0 (33)}) (5... g6 6. f4 Qb6 7. Bxc6+ Qxc6 8. Nf3 h5 9. Ne5 Qa6 10. Ne2 Bg7 11. d3 Nh6 12. O-O f5 13. h3 Nf7 14. Nxf7 Kxf7 15. e5 Rd8 16. Qe1 Be6 17. Qf2 {Bas Fortuny,M (2067)-Gyger,T (2073) ICCF 2007 1/2 (30)}) 6. a4 (6. Nf3 h5 7. Bxc6 (7. O-O h4 8. Ne2 h3 9. g3 e5 10. Bxc6 Bxc6 11. Nxe5 Qe7 12. Nxc6 Qxe4 13. f3 Qxc6 14. Qe1 O-O-O 15. Qf2 Bd6 16. b3 Re8 17. Bb2 Rh5 {0-1 (17) Godart, F-Mignon,F (2445) ICCF 2013}) (7. Ne2 Nf6 8. Bxc6 Bxc6 9. d3 Nd7 10. O-O e5 11. Ng5 Qe7 12. f4 h4 13. h3 exf4 14. Bxf4 f6 15. Nf3 g5 16. Bh2 O-O-O 17. Qd2 Nb8 18. b4 Bh6 {Taksrud,V (2134)-Paluch,A (2111) ICCF 2019 1/2 (35)}) 7... Bxc6 8. Ne5 Qc7 9. Nxc6 Qxc6 10. Qf3 h4 11. Ne2 h3 12. gxh3 Nf6 13. d3 g6 14. Bg5 Bg7 15. b3 Nxe4 16. dxe4 d3 17. Rd1 dxe2 {Kokorin,V (2156)-Aliekhin,V (2202) ICCF 2012 1/2 (38)}) (6. f4 Qa5 (6... e6 7. Nf3 Nf6 8. O-O Be7 9. d3 O-O 10. Qe2 a6 11. Bxc6 Bxc6 12. Ne5 Qc7 13. Nxc6 Qxc6 14. e5 Nd5 15. f5 exf5 16. Nxf5 Rfe8 17. Qg4 Qg6 18. Qe4 {Kriksciunas,B-Muzas,K (2163) ICCF 2005 1-0 (34)}) 7. Bxc6 Bxc6 8. Nf3 Bb5 9. Kf2 d3 10. Ne5 c4 11. cxd3 cxd3 12. Qb3 e6 13. a4 Ba6 14. Nc4 Qd8 15. a5 Ne7 16. Qa4+ Nc6 17. Rf1 Bc5+ {Palmiero,O (2246)-Moraes,F (2237) ICCF 2007 0-1}) (6. d3 Qa5+ {0-1 (6) Nielsen,J (2048)-Lautenbach,W (2209) ICCF 2005}) 6... a6 7. Bxc6 Bxc6 8. Nf3 Nf6 9. d3 Nd7 10. Bd2 (10. c3 dxc3 11. bxc3 e6 12. O-O Bd6 13. Re1 Ne5 14. d4 Nxf3+ 15. Qxf3 cxd4 16. cxd4 O-O 17. Nh5 Re8 18. Bf4 Bf8 19. a5 f6 20. Qg3 Kh8 21. e5 f5 {Kokorin,V (2325)-Morley,P (2262) ICCF 2011 1/2 (25)}) 10... h5 11. h4 e5 12. O-O g6 13. c3 Be7 14. Ng5 dxc3 15. bxc3 Nf6 16. Bc1 O-O {Kokorin,V (2358)-Zolochevsky,V (2321) ICCF 2010 0-1 (58)} ) 5... Nf6 6. Nf3 (6. d3 b5 (6... h5 7. h3 (7. N3e2 b5 8. Bb3 Nxe4 9. dxe4 c4 10. c3 d3 11. Nf4 Ne5 12. Be3 g5 13. Bd4 gxf4 14. Bxe5 Rg8 15. Bxf4 cxb3 16. Qxh5 Qb6 17. Nf3 bxa2 18. Be3 Qa6 {Kokorin,V (2358)-Shishkov,V (2178) ICCF 2010 0-1 (49)}) 7... h4 8. N3e2 b5 9. Bb3 Nxe4 10. dxe4 c4 11. c3 cxb3 12. cxd4 bxa2 13. Nf3 e6 14. Rxa2 Be7 15. O-O Bb7 16. Nc3 a6 17. Re1 Qd6 18. Be3 { Larsson,M (2295)-Gerhards,G (2272) ICCF 2017 1-0 (51)}) 7. Bb3 e6 (7... e5 8. Nf3 Bd6 9. Bg5 O-O 10. a4 bxa4 11. Bxa4 Nb4 12. c3 Na6 13. Nh5 Kh8 14. O-O Rb8 15. Bb3 dxc3 16. bxc3 Qe7 17. Nh4 Rb6 18. Bc4 Bc7 19. Qf3 {Haak,G (2046) -Hasidume,S (2207) ICCF 2006 1-0 (35)}) 8. a4 (8. Nf3 Bb7 9. a3 (9. O-O Be7 10. a4 a6 11. Ng5 h6 12. Nxe6 fxe6 13. Bxe6 Qc7 14. f4 Nd8 15. Bf5 Qc6 16. Bg6+ Kf8 17. Qe2 Nd7 18. Bh5 bxa4 19. Nf5 g6 20. Nxe7 Kxe7 {Kokorin,V (2177)-Otspere,U (2209) ICCF 2013 1/2 (88)}) 9... Bd6 10. O-O O-O 11. Ne1 Rc8 12. f4 Bb8 13. Qe2 Qb6 14. Kh1 Ne7 15. c4 bxc4 16. Bxc4 Ba6 17. e5 Nd7 18. b3 Bxc4 19. bxc4 Qc6 { Azevedo,J (2300)-de Mingo Matías,J (2278) ICCF 2017 1/2 (26)}) 8... b4 9. Nf3 Bd6 10. Qe2 Qc7 11. Bg5 Nd7 12. Bc4 O-O 13. Ba2 Bb7 14. Bd2 Na5 15. O-O Rac8 16. Rfe1 a6 17. e5 Be7 {Nielsen,J (1979)-Lumsdon,A (2015) ICCF 2016 (27)}) (6. a4 h5 7. d3 (7. h4 Qa5 8. N1e2 Ne5 9. Bb5+ Bd7 10. Bxd7+ Nfxd7 11. Nf4 e6 12. Ngxh5 c4 13. Kf1 d3 14. cxd3 Nxd3 15. Nxd3 cxd3 16. g4 Qe5 17. Qe1 g6 18. Ng3 Be7 {Wettering,G (1824)-Moot,H (1781) ICCF 2007 1/2}) 7... h4 8. N3e2 h3 9. Nxh3 Bxh3 10. gxh3 e6 11. f4 Qc7 12. Ng1 O-O-O 13. Nf3 Na5 14. Ba2 c4 15. O-O Rxh3 16. Ng5 Rh4 17. Qe1 Rg4+ {Stephan,J (2553)-Bauer,R (2565) ICCF 2014 1/2 (51)}) (6. a3 e6 7. d3 b5 8. Ba2 Be7 9. f4 O-O 10. Nh3 a5 11. O-O a4 12. Ng5 Nd7 13. h4 h6 14. f5 exf5 15. Nxf7 Rxf7 16. Bxf7+ Kxf7 17. Qh5+ Kg8 {Bender,K (2321)-Langer,R (2420) ICCF 2017 1/2 (38)}) 6... h5 (6... e6 7. d3 (7. O-O a6 ( 7... h5 8. d3 h4 9. Ne2 h3 10. g3 Ng4 11. c3 Qf6 12. Ng5 Nge5 13. Bb3 Nf3+ 14. Nxf3 Qxf3 15. Nf4 Ne5 16. Qe2 b6 17. Bd1 Qxe2 18. Bxe2 Be7 19. Bd2 {Nagel,H (2180)-Even,R (2239) ICCF 2012 0-1 (39)}) 8. d3 b5 9. Bb3 Bb7 (9... Be7 10. Bd2 O-O 11. a4 Bb7 12. Ne1 Qb6 13. Kh1 b4 14. Qe2 Rae8 15. f4 Na5 16. Ba2 g6 17. Nf3 Qc7 18. Rae1 Bd8 19. Qd1 Qb6 20. Ne5 Qd6 21. Re2 {Ott,P (2266)-Zenner,C (2297) ICCF 2018 1-0 (29)}) 10. e5 Nd7 11. Ng5 Qb6 12. f4 c4 13. dxc4 Nc5 14. cxb5 axb5 15. f5 Nxe5 16. Bf4 d3 17. Kh1 Qc6 18. Rf2 Nxb3 {Doorn,J (2271) -Makowski,T (2292) ICCF 2013 1/2 (31)}) (7. Qe2 Qc7 8. a3 h5 9. h3 Bd6 10. Nf1 a6 11. d3 b5 12. Ba2 Nd7 13. N1h2 Bb7 14. O-O a5 15. Re1 a4 16. Nf1 O-O 17. Ng5 g6 18. Nd2 Qd8 {Fuhr,M (2249)-Petukhov,V (2238) ICCF 2012 1-0 (81)}) 7... Bd6 ( 7... Qc7 8. O-O Bd6 9. Ne1 Bf4 10. Bxf4 Qxf4 11. Nh5 Qg5 12. Nxf6+ gxf6 13. f4 Qh6 14. c3 Bd7 15. Bb5 dxc3 16. bxc3 Rg8 17. Qe2 O-O-O 18. Rb1 Kb8 19. Qe3 { Kriksciunas,B (2282)-Voveris,G (2133) ICCF 2010 1/2 (45)}) 8. O-O O-O 9. Qe2 ( 9. Re1 Qc7 10. Qe2 Nd7 11. Nh5 b6 12. Bb3 Bb7 13. Bg5 Rfe8 14. Bc4 Nde5 15. Nxe5 Nxe5 16. Bb5 Rec8 17. f4 Ng6 18. e5 Be7 19. Bxe7 Nxe7 20. Qg4 Nf5 { Palm,W (2319)-Popov,E (2328) ICCF 2012 0-1 (53)}) 9... Qc7 10. c3 a6 11. cxd4 cxd4 12. Bd2 (12. a4 Rb8 13. Bd2 b5 14. axb5 axb5 15. Bb3 Bb7 16. Rac1 Bf4 17. e5 Bxd2 18. Qxd2 Nd7 19. Ng5 h6 20. Nxf7 Kxf7 21. f4 Qb6 22. Ne4 Kg6 23. Qe2 Nd8 {Ormsby,A (2074)-Reed,A (2043) ICCF 2012 1/2 (29)}) 12... h6 13. Rac1 Re8 14. Bb3 e5 15. Nh4 Bg4 16. Qe1 Be6 17. Ngf5 Bf8 18. f4 {Kokorin,V (2161) -Shishkov,V (2137) ICCF 2012 1-0 (38)}) (6... Bg4 7. e5 (7. h3 Bxf3 8. Qxf3 Ne5 9. Bb5+ Nfd7 10. Qe2 a6 11. Bxd7+ Qxd7 12. d3 e6 13. f4 Nc6 14. e5 Be7 15. O-O O-O 16. Bd2 Nb4 17. f5 Nxc2 18. f6 Bd8 {Berger,B-Bellisario,C (1382) ICCF 2019 1-0}) 7... Nd5 8. h3 Bxf3 9. Qxf3 e6 10. Qe4 a6 11. d3 h5 12. a3 h4 13. Ne2 Qc7 14. f4 Nde7 15. Bd2 g6 16. g4 hxg3 17. Nxg3 Rh4 18. Qg2 {Azevedo,J (2339) -Evans,D (2312) ICCF 2014 0-1 (49)}) (6... g6 7. O-O Bg7 8. d3 O-O 9. Bb3 (9. h3 Na5 10. Bb3 b6 11. Bf4 Nxb3 12. axb3 a5 13. Nd2 Nd7 14. Nb1 Bb7 15. Qe2 e5 16. Bc1 Re8 17. Bd2 Bc6 18. Rc1 Nf8 19. Nf1 Ne6 20. Nh2 f5 {Kokorin,V (2186) -Prystenski,A (2222) ICCF 2016 1/2 (54)}) (9. Bf4 Ne8 10. Qc1 Bg4 11. Ne1 e5 12. Bh6 Nc7 13. Bxg7 Kxg7 14. f4 exf4 15. Qxf4 Be6 16. e5 Nd5 17. Bxd5 Bxd5 18. c3 dxc3 19. bxc3 h6 20. Rb1 b6 {Ryan,P (2205)-Paul,J (2185) ICCF 2017 1/2 (30)} ) 9... e5 10. c3 Qe7 11. Bd5 Nxd5 12. exd5 Nd8 13. Qb3 f5 14. Re1 Qd6 15. c4 h6 16. a4 a5 17. Bd2 Nf7 18. h3 {Ryan,P (2205)-Adams,J (2359) ICCF 2017 0-1 (26)}) 7. Ng5 (7. e5 h4 8. exf6 hxg3 9. fxg3 exf6 (9... gxf6 10. Qe2 (10. O-O Bd7 11. d3 Qb6 12. a4 e6 13. Bd2 O-O-O 14. a5 Qc7 15. a6 b6 16. c3 dxc3 17. Bxc3 Be7 18. Qe2 Kb8 19. Rac1 Rc8 20. Rfd1 Rh5 21. d4 cxd4 {Lacrosse,M (2218) -Voiculescu,C (2102) ICCF 2006 1-0 (62)}) 10... a6 (10... Qd6 11. d3 Be6 12. Bxe6 fxe6 13. g4 O-O-O 14. a3 Bg7 15. Bd2 e5 16. Qe4 e6 17. O-O-O Rdf8 18. g5 f5 19. Qe2 c4 20. Kb1 c3 21. Bc1 Qd5 22. Rde1 {Baumann,W (2042)-Foulds,E (2170) ICCF 2011 0-1 (36)}) (10... e6 11. O-O a6 12. b3 Qc7 13. Bb2 Bd7 14. c3 O-O-O 15. cxd4 cxd4 16. Rac1 Kb8 17. Bd3 Qb6 18. Qf2 e5 19. Be4 Bh6 20. Rfe1 Rhe8 21. h3 Qa5 22. a3 {Kokorin,V (2156)-Aleksandrov,A (2248) ICCF 2012 0-1 (63)}) 11. O-O Na5 12. d3 Nxc4 13. dxc4 Bd7 14. a4 Qb6 15. Bf4 O-O-O 16. c3 Be8 17. a5 Qc6 18. Rae1 e5 19. Bd2 Qe6 20. Qf2 Bc6 21. b3 {Kokorin,V (2183)-Skirka,V ICCF 2015 0-1 (73)}) 10. O-O (10. Qe2+ Qe7 11. d3 Be6 12. Bxe6 Qxe6 13. Qxe6+ fxe6 14. Bd2 Kd7 15. g4 e5 16. O-O-O Re8 17. Rhe1 b5 18. h4 Bd6 19. h5 c4 20. Kb1 Ke6 21. Rf1 Kd5 {Baumann,W (1864)-Cijs,P (2337) ICCF 2011 0-1 (45)}) 10... Be6 (10... Bd6 11. Re1+ Kf8 12. d3 g6 13. Bb5 Bd7 14. Nd2 a6 15. Ba4 b5 16. Bb3 Ne5 17. Bd5 Rb8 18. a4 bxa4 19. Nc4 Qc7 20. Bf3 Kg7 21. Nxd6 Qxd6 22. h3 {Ryan,P (2205)-Arnold,G (2263) ICCF 2017 0-1}) 11. Qe2 (11. Bxe6 fxe6 12. d3 Qd7 13. Nd2 Bd6 14. Nc4 Bc7 15. a4 O-O-O 16. Bd2 f5 17. Qf3 Kb8 18. Rae1 Rde8 19. Rf2 a6 20. h3 Rhf8 21. a5 e5 22. g4 g6 {Augereau,C (2118)-Hervet,G (2260) ICCF 2011 0-1 (31)}) (11. Re1 Qd7 12. d3 O-O-O 13. Bxe6 fxe6 14. a4 Kb8 15. a5 a6 16. Nd2 Bd6 17. Nc4 Bc7 18. Bd2 g5 19. Qf3 Qh7 20. h3 g4 21. Qxg4 Rdg8 22. Qxe6 Rxg3 {Berger,M (2244)-Selin,S (2250) ICCF 2010 0-1 (58)}) 11... Qd7 12. Bxe6 fxe6 13. d3 O-O-O (13... Bd6 14. Bf4 e5 15. Bd2 O-O-O 16. b3 g5 17. Qe4 Bc7 18. g4 Ne7 19. h3 Nd5 20. Rf2 Kb8 21. Nh2 Rhe8 22. Nf1 Re6 23. Ng3 Qd6 24. Rf5 Qa6 25. Qe1 {Berger,B (1584)-Wallner,F ICCF 2019 1-0 (70)}) 14. Nd2 Bd6 (14... Kb8 15. Nc4 Bd6 16. Bd2 Bc7 17. a4 a6 18. a5 Ka7 19. Qg4 Qf7 20. Rae1 Rde8 21. h3 f5 22. Qf3 g6 23. Re2 e5 24. g4 Ref8 25. Ref2 Qe6 26. Qe2 {Kokorin,V (2179) -Sodomski,A (2255) ICCF 2014 0-1 (90)}) 15. Ne4 Be7 16. Bd2 Rde8 17. Rab1 f5 18. Ng5 e5 {Ryan,P (2205)-Antonov,V (2362) ICCF 2017 0-1 (28)}) (7. h4 Bg4 8. Be2 (8. a3 Nd7 9. Be2 Bxf3 10. gxf3 e5 11. d3 g6 12. Bg5 Be7 13. Bxe7 Qxe7 14. Qd2 Qf6 15. O-O-O b5 16. Rdg1 Rb8 17. Qg5 Qe6 18. f4 Qa2 19. f5 Ne7 {Fuhr,M (2217)-Kazoks,A (2361) ICCF 2014 0-1 (33)}) (8. d3 e6 9. Bg5 b5 10. Bb3 Ne5 11. Qe2 Rc8 12. O-O-O Be7 13. Kb1 Nfd7 14. Bxe7 Qxe7 15. Rc1 c4 16. dxc4 bxc4 17. Ba4 O-O 18. Bxd7 Nxd7 19. c3 d3 {Baumann,W (1965)-Balshaw,A (2157) ICCF 2010 0-1 (32)}) 8... Bxf3 9. Bxf3 d3 10. cxd3 Ng4 11. Bxg4 hxg4 12. d4 Qxd4 13. d3 e6 14. h5 O-O-O 15. O-O g6 16. hxg6 Qg7 17. Qxg4 Ne5 18. Qe2 Qxg6 {Berger,B-De Backer,Y (1561) ICCF 2019 0-1}) (7. d3 h4 8. Ne2 h3 9. Rg1 b5 10. Bb3 hxg2 11. Rxg2 e6 12. a4 b4 13. Kf1 Qc7 14. a5 Bd7 (14... Nxa5 15. Ba4+ Bd7 16. e5 Bxa4 17. exf6 Bc6 18. Bf4 Qb6 19. fxg7 Bxg7 20. Rxg7 Bxf3 21. Qd2 Rd8 22. Rg3 Bxe2+ 23. Qxe2 Nc6 24. Rg5 Rc8 25. b3 Ne7 26. Be5 {Azevedo,J (2302)-Urban,M (2284) ICCF 2015 1-0 (54)}) 15. a6 Na5 16. Bf4 Qb6 17. Ba4 Bxa4 18. Rxa4 Nh5 {Azevedo, J (2285)-Cade,S (2298) ICCF 2017 1/2 (38)}) 7... e6 8. d3 (8. O-O h4 9. Nh1 Nh7 10. Nxh7 h3 11. g3 Rxh7 12. f4 Bd7 13. a3 Qc7 14. Nf2 O-O-O 15. d3 Kb8 16. Rb1 f5 17. Bd2 a6 18. Qf3 g6 19. Rfe1 Re8 {Wettering,G (2090)-Lopes,M (2090) ICCF 2012 0-1 (41)}) (8. h4 Bd6 9. d3 Bxg3 10. fxg3 Ne5 11. Bb3 Nfg4 12. Bf4 Qa5+ 13. Bd2 Qa6 14. O-O f6 15. Nf3 Bd7 16. Nxe5 Nxe5 17. Bf4 Ng4 18. e5 O-O-O 19. Qe2 Rhf8 {Taksrud,V (2112)-Moskvichev,V ICCF 2010 1/2 (26)}) 8... h4 9. Ne2 Be7 10. h3 Nd7 11. f4 b5 12. Bb3 Nb6 13. a3 (13. a4 Na5 14. axb5 Nxb3 15. cxb3 a5 16. O-O Bb7 17. Bd2 Nd7 18. Qc1 Qb6 19. Qc4 Bxg5 20. fxg5 Ne5 21. Qc2 Qxb5 22. Nf4 Qb6 23. Rfc1 Nd7 24. g6 Rh6 {Kokorin,V (2182)-Khorunzhy,M (2196) ICCF 2017 1-0 (53)}) 13... c4 14. Ba2 {Glowatzky,T (2266)-Korshunov,S ICCF 2013 1/2 (43)} a5 15. Nf3 O-O 16. O-O Ba6 17. Kh1 b4 18. axb4 axb4 19. Bb1 Qd7 20. Bd2 Bb5 21. Rxa8 Rxa8 22. b3 c3 23. Be1 f5 24. exf5 exf5 25. Bf2 Nd5 26. Nexd4 {Binder,E (2122)-Rada,H (2414) ICCF 2014 0-1 (33)}) (2... e5 3. Nxd5 Nf6 4. Nc3 Bc5 5. Nf3 Ng4 6. d4 Bxd4 7. Nxd4 exd4 8. Nd5 Nc6 9. Bf4 Nge5 10. Bxe5 Nxe5 11. Qxd4 f6 12. Be2 c6 13. f4 Ng6 14. Qa4 {Strelecky,R-Gunning,E ICCF 2014 1-0 (42)}) 3. Nxe4 (3. Bc4 Nf6 4. f3 exf3 5. Nxf3 c5 (5... e6 6. O-O Be7 7. d4 O-O 8. Be3 a6 9. Qe2 b5 10. Bd3 Nc6 11. Rad1 Bb7 12. a3 h6 13. Ne5 Nxd4 14. Qf2 Qd6 15. Bxd4 c5 16. Be3 Qxe5 17. Bf4 {Baffo,J-Kovats,J (1910) ICCF 2012 0-1 (51)}) 6. d4 cxd4 7. Qxd4 Qxd4 8. Nxd4 a6 9. Bg5 e6 10. O-O-O Bb4 11. Na4 Nbd7 12. Be2 Ba5 13. Kb1 O-O 14. Nb3 Bd8 {Ruiz Romero,Z-Tarrío Ocaña,F ICCF 2007 0-1 (52)}) (3. d3 exd3 4. Bxd3 Nf6 5. Nf3 e6 6. O-O Bd6 7. Bg5 Nc6 8. Ne4 Be7 9. Qe2 Nxe4 10. Bxe7 Nc3 11. Bxd8 Nxe2+ 12. Bxe2 Kxd8 13. Rfe1 Ke7 14. Rad1 Rd8 {Bystrický st., K (1790)-Fric,L (2067) ICCF 2011 1-0 (25)}) (3. Bb5+ c6 4. Ba4 Nf6 5. d3 exd3 6. Qxd3 Qxd3 7. cxd3 Na6 8. Nf3 Nc5 9. Bc2 Bf5 10. O-O Bxd3 11. Bxd3 Nxd3 12. Be3 Nb4 13. Rfc1 e6 14. Bd4 Be7 {Soares,T-Pates,C (1758) ICCF 2016 0-1}) 3... Nd7 (3... e5 4. Bc4 (4. Nf3 Nc6 (4... f5 5. Nc3 e4 6. Ne5 Qd4 7. f4 Nf6 8. Bc4 Bd6 9. Qe2 Rf8 10. d3 Bxe5 11. Be3 Qd6 12. fxe5 Qxe5 13. O-O Nc6 14. Kh1 a6 15. Bf4 Qe7 16. Rad1 {Lythgoe,M (1938)-Gardner,A ICCF 2008 1-0 (28)}) (4... Nf6 5. Neg5 h6 6. Nxf7 Kxf7 7. Nxe5+ Kg8 8. Bc4+ Kh7 9. Bd3+ Kg8 10. Bc4+ Kh7 11. Bd3+ Kg8 12. Bc4+ Kh7 13. Bd3+ Kg8 14. Bc4+ Kh7 15. Bd3+ Kg8 16. Bc4+ {Henri,J (2266)-Wellen,L (2081) ICCF 2010 1/2 (36)}) 5. Bb5 Bd7 (5... Qd5 6. Nc3 Qc5 7. O-O Bd7 8. Bxc6 Bxc6 9. d4 exd4 10. Re1+ Ne7 11. Ne4 Bxe4 12. Rxe4 O-O-O 13. Re5 Qb6 14. b3 f6 15. Re4 Nc6 16. Bb2 Bc5 17. Qe2 {Bray,P (1594)-Ricketts,M (1883) ICCF 2018 0-1 (45)}) 6. d3 Qe7 {0-1 (6) Biermann,F-De La Forét,F (1696) ICCF 2016}) (4. h3 Nf6 5. Bd3 Be7 6. Nf3 Nbd7 7. c4 O-O 8. g4 Nc5 9. Qe2 Nxd3+ 10. Kf1 b6 11. Nxe5 Nxe5 12. f4 Nxe4 13. Qxe4 Qd3+ 14. Qxd3 Nxd3 15. Ke2 Nxf4+ {Ugulini,M (1439)-Heino,J (1602) ICCF 2015 0-1}) 4... Nc6 (4... Nd7 5. a3 Ngf6 6. d3 Be7 7. f4 exf4 8. Bxf4 Nxe4 9. dxe4 O-O 10. Nf3 Re8 11. Bd3 Bf6 12. Rb1 c6 13. O-O Nc5 14. b4 Nxd3 15. cxd3 Bg4 16. Qd2 {Wright,D (1618)-Davis,J (1603) ICCF 2014 1/2 (28)}) (4... Bd6 5. d4 Qe7 6. Nf3 Be6 7. Bxe6 Qxe6 8. Neg5 Qe7 9. O-O Nd7 10. dxe5 Bc5 11. e6 fxe6 12. Nxe6 Bd6 13. Re1 Kf7 14. Nfg5+ Kg6 15. Qd3+ {1-0 (15) Fuhr,M (2149)-Jericevic,Z (1946) ICCF 2017}) (4... Be7 5. Qh5 Nh6 6. d3 O-O 7. Bxh6 gxh6 8. Nf3 Nc6 9. Qxh6 Nd4 10. Nxd4 Qxd4 11. c3 Qb6 12. Qh5 Qg6 13. Qxe5 Bd6 14. Nxd6 cxd6 15. Qg3 Re8+ 16. Kd2 {Olsen,S-Anderson,J ICCF 2012 1-0}) 5. d3 (5. Qf3 f5 (5... Nf6 6. Ng5 Be6 7. Bxe6 fxe6 8. Nxe6 Qd7 9. Qb3 Nd5 10. Nxf8 Rxf8 11. a3 Qf7 12. Qg3 Qf4 13. Ne2 Qxg3 14. hxg3 h6 15. d3 O-O-O 16. O-O g5 17. b3 {Drost,R (1847)-Winkler,E (1779) ICCF 2016 1-0 (39)}) 6. c3 Qe7 7. Ng3 e4 8. Qe2 Ne5 9. Bb3 Nd3+ 10. Kf1 Nf6 11. Bc2 Bd7 12. Bxd3 exd3 13. Qxd3 O-O-O 14. Nxf5 Qe5 15. Nd4 Bc5 16. Ngf3 Qh5 {Drost,R (1880) -Allenby,E (1988) ICCF 2013 0-1 (36)}) (5. Nf3 Bf5 (5... Be7 6. d4 exd4 7. O-O Bf5 8. Re1 Bxe4 9. Rxe4 Nf6 10. Re2 O-O 11. Qd3 Na5 12. Nxd4 Bc5 13. Nb3 Nxc4 14. Nxc5 b6 15. b3 Nd6 16. Na6 Nf5 17. Nxc7 {Franzén,T (2336)-Taylor,T (2326) ICCF 2009 1/2 (26)}) 6. Ng3 Bg6 7. O-O Bd6 8. Re1 Nge7 9. b3 Nd4 10. Nxd4 exd4 11. h4 h5 12. Qf3 O-O 13. Nxh5 Rb8 14. Bb2 c5 15. a4 a6 16. c3 b5 { Vandermeulen,B (2560)-Olsson,S (2484) ICCF 2008 1/2 (92)}) 5... Be7 (5... Bf5 6. c3 Qd7 7. Nf3 Nf6 8. Qe2 Bd6 9. b4 Nxe4 10. dxe4 Be6 11. O-O Bxc4 12. Qxc4 O-O 13. Rd1 Rfe8 14. Be3 Qe6 15. Nd2 Nd8 16. Qxe6 Rxe6 17. Nc4 {Ekebjærg,O (2589)-Kristol,M (2414) ICCF 1994 1-0 (51)}) (5... h6 6. Be3 Nf6 7. Qf3 Be7 8. Ne2 Na5 9. O-O-O c6 10. Qg3 O-O 11. Bxh6 Ng4 12. Bd2 Nxc4 13. dxc4 f5 14. Bb4 Qc7 15. Bxe7 Qxe7 16. Nd6 Be6 17. f4 {Nielsen,J (2033)-Pronovost,D ICCF 2012 1-0 (25)}) 6. Nf3 Bg4 (6... Nf6 7. Nfg5 (7. Qe2 O-O 8. c3 (8. O-O Bg4 9. c3 Na5 10. Bb5 a6 11. Ba4 b5 12. Bc2 c5 13. h3 Bxf3 14. Qxf3 Qd7 15. Nxf6+ Bxf6 16. Qe4 g6 17. f4 exf4 18. Qxf4 Bg7 19. Bd2 Rac8 {Ekebjærg,O (2589)-Buj,P (2370) ICCF 1994 1-0 (35)}) 8... h6 9. O-O Bg4 10. h3 Bxf3 11. Qxf3 Nxe4 12. dxe4 Qd6 13. Be3 Qg6 14. Rad1 Rad8 15. Bd5 b6 16. Qe2 Nb8 17. f4 c6 18. f5 Qf6 {De Smet, K (2243)-De Meye,J (2013) ICCF 2012 1/2 (26)}) (7. Neg5 Nd5 8. Qe2 f6 9. Ne4 Bg4 10. c3 Qd7 11. h3 Be6 12. O-O O-O-O 13. Re1 Rhe8 14. a4 g5 15. a5 h5 16. a6 g4 17. hxg4 hxg4 18. axb7+ Kb8 {Larsson,M (2392)-Kerr,S (2547) ICCF 2004 0-1 (27)}) (7. O-O O-O 8. h3 Nxe4 9. dxe4 Qxd1 10. Rxd1 Kh8 11. a3 f5 12. Bd5 Nd8 13. Nxe5 fxe4 14. Bxe4 Be6 15. Re1 c6 16. Be3 Nf7 17. Nxf7+ Rxf7 18. Rad1 Kg8 { Taksrud,V (2066)-Wicklund-Hansen,G (1917) ICCF 2013 1-0}) 7... Nxe4 (7... O-O 8. Nxf7 Rxf7 9. Ng5 Nd5 10. Nxf7 Kxf7 11. Qf3+ Ke6 12. O-O b5 13. c3 bxc4 14. dxc4 Na5 15. Rd1 Nxc4 16. Qg4+ Kf7 17. Qxc4 Be6 18. Qe4 Qd6 19. Qf3+ {Larsson, M (2381)-Marczell,P (2572) ICCF 2008 1/2}) 8. Nxf7 Nxf2 (8... Qd4 9. Be3 Qxb2 10. Nxh8 Bg4 11. f3 Qc3+ 12. Kf1 Nd6 13. Bb3 Bd7 14. Qe1 Qxe1+ 15. Rxe1 Na5 16. Bg5 Bf6 17. Bxf6 gxf6 18. f4 Nxb3 19. axb3 Bc6 20. fxe5 {Palmiero,O (2217) -Lujambio,A (1897) ICCF 2010 1-0 (45)}) 9. Nxd8 Nxd1 10. Nxc6 bxc6 11. Kxd1 Bg4+ (11... Rf8 12. Be3 Rb8 13. Rb1 a5 14. Kd2 Bf5 15. Rhf1 Kd7 16. Rf2 Be6 17. Rxf8 Rxf8 18. Bxe6+ Kxe6 19. a4 Kd5 20. Re1 g6 21. Kd1 Bb4 22. c3 Be7 23. c4+ { Henri,J (2404)-Siebert,W (2201) ICCF 2008 1-0 (54)}) 12. Ke1 Bh5 13. Be3 Bf7 14. Bxf7+ Kxf7 15. Kd2 Rhf8 16. Rae1 c5 17. Re2 Ke6 18. Rhe1 {Henri,J (2337) -Helman,B (2110) ICCF 2007 1/2 (35)}) (6... a6 7. O-O h6 8. Re1 Bg4 (8... Nf6 9. Ng3 Qd6 10. Bd2 O-O 11. Bc3 Nd7 12. Nf5 Qg6 13. Nxe7+ Nxe7 14. Nxe5 Nxe5 15. Bxe5 Be6 16. Bxe6 fxe6 17. Bxc7 Nd5 18. Bg3 Rac8 19. c3 Rc6 20. Qe2 {Taksrud,V (2066)-Wicklund-Hansen,G (1917) ICCF 2013 1-0 (26)}) 9. h3 Bc8 10. Nc3 Qd6 11. Bd5 Nf6 12. Bxc6+ Qxc6 13. Nxe5 Qd6 14. Bf4 Qd8 15. Qe2 c6 16. Rad1 Nd5 17. Nxd5 cxd5 18. Nf3 {Kukula,P (2046)-Wettering,G (1933) ICCF 2006 1-0 (27)}) ( 6... h6 7. Bb5 Qd5 8. c4 Qe6 9. O-O Bd7 10. d4 exd4 11. Re1 O-O-O 12. Nc5 Qf6 13. Nxd7 Rxd7 14. Bxc6 bxc6 15. Qa4 Kb7 16. Re5 Rd8 17. Ra5 Ra8 18. Bd2 { Martindale,D (2179)-Toothill,J (2082) ICCF 2012 1-0}) 7. h3 Bh5 8. Ng3 Bg6 9. O-O Bd6 10. Re1 Nge7 11. Bd2 f6 12. Nh4 Bf7 13. Bxf7+ (13. Qg4 Bxc4 14. dxc4 Kf7 15. Be3 b6 (15... Qc8 16. c5 Qxg4 17. hxg4 Nd5 18. cxd6 Ncb4 19. Re2 Nxe3 20. fxe3 cxd6 21. a3 Nc6 22. Rd2 Rad8 23. Rad1 Ke6 24. Nhf5 d5 25. Nxg7+ Kf7 26. N7f5 Ke6 27. c4 {O'Neill-MCAleenan,C (1751)-Mokosak,D (1844) ICCF 2008 1-0 (32)}) 16. c5 bxc5 17. Qc4+ Kf8 18. Ne4 Qe8 19. Rad1 Qf7 20. Qa4 Rd8 21. Bxc5 Bxc5 22. Nxc5 Rd6 23. Nb7 Rd4 24. Rxd4 Nxd4 {Azevedo,J (2302)-Manduch,M (2385) ICCF 2015 1-0 (69)}) 13... Kxf7 14. Nhf5 Nxf5 15. Nxf5 {Ekebjærg,O (2589) -Franzen,J (2588) ICCF 1994 1/2 (36)}) (3... Bf5 4. Ng3 (4. Qf3 e6 (4... Bxe4 5. Qxe4 c6 6. Nf3 Nf6 7. Qb4 Qc7 8. d4 a5 9. Qd2 e6 10. Bd3 Nbd7 11. O-O h6 12. c3 Bd6 13. Re1 O-O 14. a4 Rfe8 15. b3 e5 16. dxe5 {Drost,R (1898)-Aiken,R (1916) ICCF 2015 0-1 (38)}) (4... Bg6 5. h4 h6 6. h5 Bh7 7. c3 Nd7 8. d3 c6 9. Be3 Qa5 10. Qd1 Ngf6 11. Nxf6+ exf6 12. Rh4 Nb6 13. Nf3 Be7 14. Qb3 O-O 15. O-O-O Bf5 16. Kb1 {Nielsen,J (2039)-Lanzani,P (1989) ICCF 2010 1/2 (34)}) 5. c3 Nc6 6. d4 Qd7 7. Ng3 Bg6 8. Bb5 a6 9. Ba4 Nge7 10. h4 h6 11. N1e2 Qd5 12. Qxd5 Nxd5 13. Nf4 Nxf4 14. Bxf4 O-O-O 15. h5 Bh7 {Vandermeulen,B (2586)-Semrl,M (2539) ICCF 2007 1/2 (26)}) (4. f3 e5 5. Bb5+ c6 6. Bc4 Bxe4 7. d3 Bd5 8. b3 Nd7 9. Ne2 Bc5 10. h4 Ngf6 11. h5 b5 12. Bxd5 Nxd5 13. Rf1 Bb4+ 14. Bd2 Ne3 15. Qb1 Bxd2+ {Whittle,P (1154)-Kirk,T (1590) ICCF 2020 0-1 (30)}) 4... Bg6 (4... Qd5 5. Nxf5 Qxf5 6. d4 e5 7. Be3 Bd6 8. Ne2 Nd7 9. Ng3 Qg6 10. Bd3 Qe6 11. O-O O-O-O 12. Re1 g6 13. c4 Re8 14. c5 Bf8 15. c6 Nb6 16. cxb7+ {Wilshusen,H (1648) -Chugg,M (1495) ICCF 2015 1-0 (40)}) 5. Nf3 (5. h4 h6 (5... h5 6. Nf3 Qd6 7. d4 Nc6 8. Be2 O-O-O 9. c3 Nf6 10. O-O e5 11. dxe5 Nxe5 12. Qa4 Nxf3+ 13. Bxf3 Qb6 14. Be3 Bc5 15. Bxc5 Qxc5 16. Rad1 c6 17. b4 {Phillips,P (2029)-Cranmer,S (2132) ICCF 2017 1/2}) 6. Nf3 (6. h5 Bh7 7. d4 (7. Nf3 Nf6 8. d4 e6 9. Bd3 Bxd3 10. Qxd3 a6 11. Be3 Bb4+ 12. c3 Bc5 13. Ne4 O-O 14. Nxc5 b6 15. Ne4 Nbd7 16. O-O Nxe4 17. Qxe4 Nf6 18. Qd3 Re8 {Santamaría Quintana,I (1216)-Reyes Cortés,R (1725) ICCF 2017 0-1 (46)}) 7... Nc6 (7... e6 8. Bd3 Bxd3 9. Qxd3 c5 10. Nf3 Nf6 11. Be3 Qa5+ 12. c3 cxd4 13. Nxd4 Nbd7 14. O-O Be7 15. b4 Qc7 16. Rae1 O-O 17. Bxh6 Ne5 18. Qe2 gxh6 19. Nb5 {Larsson,M (2286)-Dimov,D (2294) ICCF 2015 1/ 2 (39)}) 8. Bb5 e6 9. c3 Qd5 10. c4 Qd6 11. Nf3 O-O-O 12. c5 Qd5 13. Bxc6 Qxc6 14. Ne5 Qe8 15. c6 Bb4+ 16. Kf1 f6 17. cxb7+ Kb8 {Tosi,F (2317)-Soldano,G ICCF 2009 1/2 (60)}) (6. Qf3 Nc6 7. Bb5 Qd7 8. d3 O-O-O 9. Bxc6 Qxc6 10. Qxc6 bxc6 11. Be3 Kb8 12. h5 Bh7 13. Nf3 Rd5 14. c4 Rd6 15. Ne5 e6 16. Nxf7 Rd7 17. Nxh8 Bb4+ {Wyder,B (1932)-Di Pietro,R ICCF 2008 1-0}) (6. Nh3 Nf6 7. Nf4 Bh7 8. Ngh5 {1-0 (8) Nielsen,J (2048)-Nikel,B (2348) ICCF 2005}) 6... Nd7 7. Bc4 e6 8. d3 Ngf6 9. Qe2 (9. h5 Bh7 10. a3 Nb6 11. Ba2 Bd6 12. Qe2 c6 13. Ne4 Nxe4 14. dxe4 Qc7 15. Bd2 Na4 16. Rh4 Be5 17. Nxe5 Qxe5 18. Rb1 O-O-O 19. Bf4 Qf6 20. Bg3 Qg5 {Henri,J (2338)-Satici,A (2354) ICCF 2007 1/2 (45)}) 9... a6 (9... Be7 10. h5 Bh7 11. Bd2 a6 12. O-O-O O-O 13. d4 c5 14. dxc5 Qc7 15. Bd3 Bxd3 16. Qxd3 Nxc5 17. Qe2 Nd5 18. Kb1 Bf6 19. Ne4 Nxe4 20. Qxe4 Rac8 21. g4 {Glanville,C (2116) -Brasier,J (2050) ICCF 2013 0-1 (42)}) (9... Bd6 10. h5 Bh7 11. Bd2 Bxg3 12. fxg3 O-O 13. Rh4 e5 14. O-O-O Re8 15. g4 e4 16. dxe4 Nxe4 17. Bxf7+ Kxf7 18. Qc4+ Kf8 19. g5 Nd6 20. Rf4+ Nf6 21. Qb3 {Macdonald,D (2255)-Verolme,M ICCF 2004 1-0}) 10. h5 Bh7 11. a3 Bd6 12. Bd2 b5 13. Ba2 c5 14. Ne4 Nxe4 15. dxe4 Qc7 16. O-O-O b4 {Matheis,T (2354)-Dillenburg,A (2379) ICCF 2007 1/2 (48)}) (5. Bc4 e6 (5... Nf6 6. Nf3 e6 7. h4 h6 8. Ne5 Bh7 9. Qe2 Be7 10. Nxf7 Kxf7 11. Qxe6+ Ke8 12. Qf7+ Kd7 13. Qe6+ Ke8 14. Nf5 Bxf5 15. Qxf5 Kf8 16. c3 Qe8 17. d4 {Wyder,B (2045)-Weseman,G (1985) ICCF 2009 0-1 (38)}) 6. Nf3 (6. N1e2 Bd6 7. d3 Nd7 8. Be3 Ngf6 9. h3 Nb6 10. Bb3 Nbd5 11. a3 Nxe3 12. fxe3 Nd7 13. Nf1 Qf6 14. Nc3 Qh4+ 15. Kd2 O-O 16. Qe1 Qe7 17. Rd1 b5 {White,C (1722)-Thew,B (2141) ICCF 2016 0-1 (26)}) (6. h4 h6 7. N1e2 Bd6 8. d3 Nf6 9. Nf4 Bh7 10. Ngh5 O-O 11. g4 Nd5 12. g5 Nxf4 13. Bxf4 Bxf4 14. Nxf4 hxg5 15. hxg5 Qxg5 16. Qd2 Qe5+ 17. Qe3 Nc6 {Franzén,T (2336)-Zubov,Y (2364) ICCF 2009 1/2 (32)}) 6... Nd7 7. d3 (7. O-O Be7 (7... Ngf6 8. Re1 Bd6 9. Nh4 O-O 10. Nxg6 hxg6 11. d4 c5 12. dxc5 Nxc5 13. c3 Qc7 14. Qc2 Rac8 15. Be2 Qb8 16. a4 Be7 17. Be3 Rfd8 18. Rad1 a6 19. Rxd8+ {Kokorin,V (2205)-Lang,F (1845) ICCF 2018 1/2 (41)}) 8. Re1 h6 9. c3 Ngf6 10. d4 c6 11. Qb3 Qc7 12. Bxe6 fxe6 13. Qxe6 Nf8 14. Qe2 Kf7 15. Bf4 Bd6 16. Bxd6 Qxd6 17. Qc4+ Nd5 18. Qb3 Qc7 {Foster,K (2306)-Berchtold,C (2312) ICCF 2011 1/2}) 7... Ngf6 8. Qe2 Bd6 (8... c6 9. O-O Bd6 10. Ne4 Nxe4 11. dxe4 Bh5 12. Qd2 Bc7 13. Be2 Ne5 14. Qe3 Qf6 15. Nd4 Ng4 16. Bxg4 Bxg4 17. Nb3 Bh5 18. Qc5 Qe5 19. Qxe5 Bxe5 20. f3 {Azevedo,J (2291)-Dugushov,S (1958) ICCF 2015 1/2 (48)}) (8... Be7 9. Bd2 (9. a4 h6 10. O-O O-O 11. Ne4 Nd5 12. Re1 c6 13. c3 Qc7 14. Bd2 a5 15. d4 Rad8 16. Rad1 Rfe8 17. Bd3 Bf8 18. Qf1 N5b6 19. b3 e5 20. Ng3 Bxd3 {Visser,A (1968)-Nurmi,R (1867) ICCF 2017 1/2 (42)}) 9... c6 10. a4 h6 11. O-O O-O 12. Rfe1 Re8 13. b4 Nd5 14. Rab1 Qc7 15. a5 b5 16. axb6 axb6 17. b5 c5 18. Ra1 Bf6 19. Rxa8 Rxa8 20. Ne4 {Keast,D (2271)-Jensen,K (2179) ICCF 2008 1/ 2 (28)}) 9. Bg5 O-O 10. Ne4 Be7 11. h4 h6 12. Bd2 c6 13. Ng3 Nd5 14. h5 Bh7 15. a3 Bf6 16. Rb1 Qc7 {Steiner,H (2089)-Eraclides,G (1984) ICCF 2011 0-1 (77)}) ( 5. Qf3 c6 6. Qb3 Qb6 7. d3 Nd7 8. h4 h6 9. Be3 Qxb3 10. axb3 a6 11. Be2 Ngf6 12. Nf3 e6 13. h5 Bh7 14. Nd2 Nd5 15. Nc4 Be7 16. Bd2 O-O {Justesen,A (2183) -Weiss,L (1986) ICCF 2009 1/2 (35)}) (5. f4 e6 6. Nf3 Nf6 7. d4 Be7 8. c3 O-O 9. Bd3 Bxd3 10. Qxd3 c5 11. O-O cxd4 12. Nxd4 Nc6 13. Be3 Ng4 14. Rad1 Nxe3 15. Qxe3 Qb6 16. f5 e5 {Nielsen,J (2027)-Vasquez Nigro,D (2072) ICCF 2011 0-1 (45)} ) 5... Nd7 (5... Nf6 6. d4 (6. h4 h6 7. Ne5 Nc6 8. Nxg6 fxg6 9. c3 Qd6 10. Qc2 Nd7 11. Bd3 Qe6+ 12. Kf1 Nce5 13. Be2 O-O-O 14. b4 Kb8 15. d4 Nc4 16. a4 Nd6 17. a5 Qf6 {Del Vivo,M (2215)-Parente,M (1536) ICCF 2019 1-0 (28)}) 6... e6 7. c3 Nbd7 (7... c6 8. Ne5 Nbd7 9. Nxg6 hxg6 10. Be2 Bd6 11. Qd3 Qc7 12. Bd2 Bf4 13. O-O-O O-O-O 14. Kb1 Nb6 15. Bxf4 Qxf4 16. Bf3 e5 17. Ne2 Qg5 18. Qc2 Nc4 19. Ng3 {Fuhr,M (2283)-Carnemolla,G (1970) ICCF 2009 1/2 (27)}) 8. Qb3 (8. Bc4 c6 (8... Bd6 9. O-O O-O 10. Nh4 Bxg3 11. fxg3 Be4 12. g4 Bd5 13. Bd3 Be4 14. g5 Bxd3 15. Qxd3 Nd5 16. c4 Ne7 17. Bf4 a5 18. b3 a4 19. Rad1 axb3 20. axb3 { Fuhr,M (2136)-Vaalen,R ICCF 2007 1-0 (37)}) 9. O-O Qc7 10. Nh4 Bd6 11. Bb3 O-O 12. Re1 c5 13. Nxg6 hxg6 14. Bg5 Bf4 15. Bxf4 Qxf4 16. Qd3 Rac8 17. Rad1 Qc7 18. Qb5 c4 19. Bc2 Nd5 {Palm,W (2319)-Muri,H (2355) ICCF 2012 0-1 (61)}) (8. Bd3 c5 9. O-O cxd4 10. Bxg6 hxg6 11. Nxd4 Bc5 12. Nf3 Qc7 13. Bg5 Ng4 14. b4 Bb6 15. Ne4 Ndf6 16. Nd6+ Ke7 17. Nb5 Qb8 18. h4 Rc8 19. Qb3 Qg3 {Berger,B (1755)-Sevillano Leal,J ICCF 2020 0-1 (48)}) 8... Rb8 (8... Qc8 9. Nh4 c5 10. Nxg6 hxg6 11. Be2 Bd6 12. O-O O-O 13. Rd1 Qc7 14. Nf1 cxd4 15. cxd4 Nb8 16. Bg5 Nc6 17. Bf3 Be7 18. Rac1 Rad8 19. h4 Qd7 20. Bxc6 {Bialas,T (2232)-Traut,W (2310) ICCF 2020 1-0 (27)}) 9. c4 (9. Nh4 Bd6 10. Nxg6 hxg6 11. Bg5 c6 12. O-O-O Qc7 13. Kb1 b5 14. Be2 c5 15. Qc2 O-O 16. dxc5 Nxc5 17. Rd4 Be5 18. Rh4 Rfc8 19. Rd1 Na4 20. Bd2 Nd5 {Wyder,B (1932)-Rohleder,M ICCF 2008 0-1 (26)}) 9... Be7 10. Be2 c5 11. Bf4 Qa5+ 12. Kf1 Rc8 13. d5 exd5 14. cxd5 O-O 15. d6 Bd8 16. Bd2 Qb6 17. Qxb6 {Knöppel,B (1996)-Micek,J (1983) ICCF 2015 1/2 (55)}) (5... e6 6. h4 h6 7. Ne5 Qf6 (7... Bh7 8. Qf3 Qf6 9. Qxb7 Qxe5+ 10. Be2 Qd5 11. Bf3 Qxb7 12. Bxb7 Na6 13. c3 Nb4 14. cxb4 Rb8 15. Bc6+ Kd8 16. a3 Ne7 17. Be4 Bxe4 18. Nxe4 Nd5 19. d3 {Henri,J (2328)-Kinatas,M ICCF 2010 1-0 (25)}) 8. d4 Bh7 9. Bd3 Nd7 10. Nxd7 Kxd7 11. Bxh7 Rxh7 12. Qd3 g6 13. h5 Rd8 14. hxg6 Qxg6 15. Qxg6 fxg6 16. Be3 Nf6 17. O-O-O {Baffo,J-Kovats,J ICCF 2010 1/2 (76)}) 6. d4 (6. h4) 6... e6 7. h4 (7. Bd3 Ngf6 8. O-O Be7 9. Bxg6 fxg6 10. Re1 Nf8 11. Ng5 Qd7 12. Qe2 Qxd4 13. Nxe6 Nxe6 14. Qxe6 Qd7 15. Bg5 Qxe6 16. Rxe6 Kf7 17. Rae1 Rhe8 18. Bxf6 gxf6 {Berger,B (1804)-Smiley,W (1873) ICCF 2020 1/2}) 7... h6 8. h5 (8. Bd3 Bxd3 9. Qxd3 Ngf6 10. Bd2 Bd6 11. Ne4 Nxe4 12. Qxe4 c6 13. O-O-O Nf6 14. Qe2 Qc7 15. Kb1 O-O 16. Rhg1 Ng4 17. Ne1 h5 18. Bg5 Be7 19. Nd3 Rad8 {Wyder,B (2010)-Antonov,N ICCF 2009 1-0 (49)}) 8... Bh7 9. Bd3 Bxd3 10. Qxd3 Ngf6 11. Bd2 (11. Bf4 Bd6 12. Bxd6 cxd6 13. O-O d5 14. Qa3 Qe7 15. Qxe7+ Kxe7 16. c3 Rhc8 17. Rfe1 Kf8 18. a4 a5 19. Re2 Rc7 20. Nd2 Nb6 21. Nb1 Rc6 22. Kh2 Rac8 {Larsson,M (2395)-Baumgartner,U (2231) ICCF 2007 1/2 (43)}) 11... c5 ( 11... Be7 12. c4 O-O 13. Bc3 c5 14. O-O cxd4 15. Nxd4 Nb6 16. Rad1 Na4 17. Ngf5 exf5 18. Nxf5 Qc7 19. Rfe1 Bd8 20. Be5 Qc8 21. Qf3 Ne8 22. Qg4 Kh7 23. b3 { Kerr,S (2554)-Boronowskis,P (2308) ICCF 2008 1-0 (34)}) 12. O-O-O Qc7 13. Kb1 ( 13. Ne4 c4 14. Qe2 Nxe4 15. Qxe4 Nf6 16. Qe2 Bd6 17. Ne5 Rc8 18. Kb1 Nd5 19. c3 O-O 20. Rh4 b5 21. Rg4 Kh8 22. Rh1 a5 23. Rh3 Nf6 24. Rf4 Bxe5 {Lloyd,G (2166) -Matheis,T (2375) ICCF 2008 1/2 (58)}) (13. dxc5 Bxc5 14. Ne4 O-O 15. Nxc5 Nxc5 16. Qe2 Nce4 17. Be3 Rfd8 18. Bd4 Qa5 19. Kb1 Rac8 20. c3 Rd5 21. Ka1 Rc6 22. Rh4 Nd6 23. Bxf6 gxf6 24. Rhd4 Rxd4 {Hammerschmidt,V (1916)-Malak,J (1906) ICCF 2013 1-0 (54)}) 13... O-O-O 14. Qe2 c4 15. Ne5 {Kerr,S (2554)-Jenkinson,S (2325) ICCF 2008 1-0 (38)}) (3... Nf6 4. Nxf6+ (4. Ng3 h5 5. Bc4 (5. h4 Bg4 6. Nf3 e6 7. d4 c5 8. Be2 Nc6 9. dxc5 Qc7 10. Be3 Rd8 11. Qc1 Bxf3 12. Bxf3 Ne5 13. b4 Nxf3+ 14. gxf3 b6 15. Qa3 bxc5 16. bxc5 Be7 {Fuhr,M (2249)-Moskalyov,P ICCF 2012 0-1 (34)}) 5... h4 6. Nf1 h3 7. g3 Nc6 8. Nf3 Bf5 9. Ne3 Bg6 10. d4 Qd6 11. c3 O-O-O 12. Ng5 Ne5 13. dxe5 Qxe5 14. Qa4 Qxg5 15. Qxa7 Nd7 {Henri,J (2329)-Naach,R (2207) ICCF 2009 0-1 (32)}) 4... exf6 (4... gxf6 5. Bc4 (5. d4 Qd6 6. c3 Nc6 7. Be3 Bf5 8. Ne2 O-O-O 9. Qa4 h5 10. O-O-O e6 11. Ng3 Bg6 12. Bc4 Bh6 13. Bxh6 Rxh6 14. Ne2 Rhh8 15. d5 Ne5 16. dxe6 Qc5 {Taksrud,V (2073) -Sanna,P ICCF 2009 1/2}) (5. Bb5+ Bd7 6. Qh5 Rg8 7. Bc4 e6 8. d4 Bc6 9. Nf3 Rxg2 10. Bf4 Qe7 11. O-O-O Nd7 12. d5 Qc5 13. Bg3 Ba4 14. Bb3 Bxb3 15. axb3 O-O-O 16. Rhe1 e5 {Justesen,A (2000)-Sperandio,A (2028) ICCF 2010 1-0}) (5. Nf3 Bg4 6. h3 Bh5 7. b3 Nc6 8. Bb2 e5 9. Bc4 Qe7 10. Qe2 a6 11. Bd5 O-O-O 12. Bxc6 Bxf3 13. Bxf3 {1-0 (13) Azevedo,J (2341)-Félix,C ICCF 2013}) 5... Bf5 (5... Qd6 6. d3 Nc6 7. Be3 Rg8 8. Qh5 Rg7 9. Bh6 Bg4 10. Qb5 Rg8 11. Be3 Bd7 12. Ne2 O-O-O 13. Bxf7 Ne5 14. Qd5 Nxf7 15. Qxf7 Rg7 16. Qb3 Rxg2 17. O-O-O {Kokorin,V (2358)-Popov,V (2060) ICCF 2010 0-1 (87)}) (5... Rg8 6. Qh5 e6 7. Ne2 Rxg2 8. d4 Qd6 9. c3 Rg6 10. Bd3 f5 11. Bf4 e5 12. Bxe5 Qc6 13. O-O-O Rh6 14. d5 Rxh5 15. dxc6 Nxc6 16. Bxc7 Rh4 17. Bb5 {Lugli,A-Mercorelli,P ICCF 2012 1/2 (54)}) 6. Qf3 Bc8 7. Ne2 Nc6 8. Qh5 Ne5 9. Bb3 Bg4 10. Bxf7+ Kd7 11. Qh4 Bxe2 12. Qd4+ Kc6 13. Qe4+ Kb6 14. Kxe2 Nxf7 15. Qb4+ Kc6 16. Qc4+ {Beday,A (1998) -Shemetenko,I (1934) ICCF 2014 1/2 (39)}) 5. d4 (5. Nf3 Bd6 6. d4 O-O 7. Bd3 ( 7. Be2 Be6 8. d5 Bf5 9. Be3 Re8 10. Qd2 c6 11. dxc6 Nxc6 12. c3 Bc7 13. Nd4 Nxd4 14. Bxd4 Bb6 15. O-O Bxd4 16. cxd4 Be6 17. Bf3 Bd5 18. Bxd5 Qxd5 {Evans, S-Hart,T ICCF 2008 1/2 (28)}) 7... Re8+ 8. Be2 Qe7 9. Be3 f5 10. g3 {1-0 (10) Drost,R (1927)-Preuße,G (2078) ICCF 2018}) (5. Bb5+ c6 6. Be2 Bd6 7. Nf3 O-O 8. O-O Re8 9. d4 Bf5 10. Bd3 Qd7 11. c4 Bxd3 12. Qxd3 Na6 13. Rd1 Nb4 14. Qc3 b5 15. a3 Na6 16. b3 Nc7 {Enescu,C (2413)-Florea,M (2167) ICCF 2007 1/2 (65)}) (5. Bc4 Bd6 6. Qe2+ Qe7 7. Qxe7+ Bxe7 8. d4 Nc6 9. Be3 Na5 10. Bb5+ Bd7 11. Bxd7+ Kxd7 12. b3 Bb4+ 13. Kf1 Rhe8 14. Ne2 Nc6 15. c4 a5 16. a3 Bf8 {Manarin,F (1655)-Grobler,D (1993) ICCF 2006 0-1}) 5... Bd6 (5... Be6 6. Nf3 Be7 7. Bb5+ c6 8. Ba4 O-O 9. O-O b5 10. Bb3 Bxb3 11. axb3 Nd7 12. Bf4 Nb6 13. Bg3 Bd6 14. Bxd6 Qxd6 15. Re1 Qd7 16. c3 Rfe8 17. Qc2 {Drost,R (1926)-Hohenberger,K (1897) ICCF 2015 1-0 (51)}) 6. Bd3 O-O 7. Be3 (7. Ne2 c5 8. Be3 (8. O-O cxd4 9. Nxd4 Nc6 10. Nxc6 bxc6 11. Be3 Be6 12. b3 Be5 13. Rb1 Re8 14. c4 g6 15. Qc2 f5 16. Rbd1 Qc7 17. f4 Bf6 18. Qf2 Qa5 {1/2 (18) Henri,J (2397)-Sosa Patino,C (2440) ICCF 2008}) 8... Qc7 9. dxc5 Bxc5 10. Bxc5 Qxc5 11. O-O Nc6 12. Qd2 Rd8 13. Qc3 Qb6 14. Qb3 Qc7 15. Qc4 Qb6 16. Qb5 Qxb5 17. Bxb5 Bf5 18. c3 Rd2 {Maddox,D (2198)-Eris,C ICCF 2005 0-1 (42)}) 7... Re8 8. Ne2 Nc6 (8... c6 9. O-O Bg4 10. Qd2 Nd7 11. c4 Qc7 12. f3 Be6 13. c5 Be7 14. b4 Rad8 15. Bf2 Nf8 16. a4 a6 17. b5 axb5 18. axb5 f5 19. Ra7 cxb5 20. Rc1 {Kokorin,V (2182)-Trofimov,V (2399) ICCF 2017 1/2 (45)}) 9. c3 Ne7 10. Qc2 g6 11. O-O Bf5 12. g3 Bxd3 13. Qxd3 Nf5 14. Bf4 c5 15. Rad1 {Larsson,M (2293)-Welik,L (1967) ICCF 2012 1/2 (57)}) (3... Nc6 4. Nf3 (4. Bc4 Bf5 (4... Nf6 5. Qe2 (5. Nxf6+ gxf6 6. Qh5 Ne5 7. Bb3 a5 8. Nf3 Qd6 9. Nxe5 Qxe5+ 10. Qxe5 fxe5 11. d3 e6 12. a4 b6 13. Ke2 Bb7 14. Rg1 h5 15. g3 Be7 16. Be3 O-O-O {Henri,J (2329)-Johnston,A (2076) ICCF 2009 0-1 (51)}) 5... Nd4 6. Nxf6+ gxf6 7. Qh5 e6 8. Bd3 Bd7 9. Ne2 Bc6 10. Qg4 Nxe2 11. Bxe2 f5 12. Qg3 Qd7 13. Qc3 Rg8 14. Bf3 Be4 15. Bxe4 fxe4 16. O-O {Baffo,J (2091) -Kovats,J (1959) ICCF 2014 0-1 (41)}) 5. Ng3 Bg6 6. Nf3 Qd6 (6... e6 7. O-O Nf6 8. d4 Bd6 (8... Be7 9. c3 O-O 10. Qe2 Na5 11. Ne5 Nxc4 12. Qxc4 Rc8 13. Qe2 c5 14. dxc5 Rxc5 15. c4 Bd6 16. Nxg6 hxg6 17. Be3 Rc8 18. Rfd1 Qc7 19. b3 Rfd8 20. Rd2 {Rybák,M (2446)-O'Connell,C ICCF 2011 1/2 (34)}) 9. c3 h6 10. Qe2 Na5 11. Bb5+ c6 12. Bd3 Bxd3 13. Qxd3 b5 14. Re1 O-O 15. Ne4 Nxe4 16. Qxe4 b4 17. Qg4 Qf6 18. cxb4 {Henri,J (2328)-Sutton,A (2291) ICCF 2010 1-0 (44)}) 7. h4 (7. O-O O-O-O 8. Re1 Nf6 9. d3 e6 10. a4 Kb8 11. a5 a6 12. Ra4 Qd7 13. Bb3 Nh5 14. Bd2 Nxg3 15. hxg3 Bd6 16. Qe2 e5 17. Rc4 f6 18. Ba4 Bf7 {Henri,J (2404)-Laureles,R (1972) ICCF 2008 1-0 (47)}) 7... Nf6 8. d3 Nh5 9. Ne4 Bxe4 10. dxe4 Qxd1+ 11. Kxd1 Nf6 12. Re1 e6 13. Re2 O-O-O+ 14. Ke1 Nd4 15. Nxd4 Rxd4 {Hansen,K (2213) -Tanti,J (2296) ICCF 2008 1/2}) (4. c3 Qd5 5. d3 Bf5 6. Nf3 Nf6 7. Nxf6+ exf6 8. d4 Bd6 9. Be3 a5 10. Be2 O-O 11. O-O Rfe8 12. Re1 a4 13. Nh4 Bd7 14. Bd3 Na5 15. Qc2 g6 {De Smet,K (2196)-Zhorov,B ICCF 2007 1/2 (28)}) 4... Nf6 (4... Bf5 5. Ng3 Bg6 6. Bb5 (6. h4 h6 7. Bb5 Qd6 8. h5 Bh7 9. O-O Nf6 10. Re1 a6 11. Bxc6+ Qxc6 12. d3 e6 13. Ne5 Qd5 14. d4 Rd8 15. Be3 b5 16. Ng4 Be7 17. c3 O-O { Herzog,K (1982)-Steinbrück,W (2425) ICCF 2006 0-1 (43)}) 6... Qd6 7. O-O O-O-O 8. d3 {1-0 (8) Wyder,B (1678)-Kutlu,H (1960) ICCF 2006}) (4... Bg4 5. h3 (5. Bc4 e6 6. h3 Bxf3 7. Qxf3 Ne5 8. Qb3 Nxc4 9. Qxc4 Qd5 10. d3 Qxc4 11. dxc4 Ne7 12. Bd2 Nf5 13. Rd1 f6 14. Bf4 e5 15. Be3 Nxe3 16. fxe3 Rd8 {Zakharov,V (2001) -Voronin,A ICCF 2010 1/2 (57)}) 5... Bxf3 (5... Bh5 6. Ng3 Bg6 7. c3 (7. Nh4 Nf6 8. Nxg6 hxg6 9. c3 e6 10. d4 Qd5 11. Be2 O-O-O 12. Bf3 Qd7 13. Bg5 Be7 14. O-O Nd5 15. Bxe7 Ncxe7 16. Ne4 Nf5 17. Nc5 Qe7 18. c4 b6 {Berlinger,G (2498) -Wallinger,M (2441) ICCF 2007 1-0 (43)}) 7... e6 8. d4 Bd6 9. Qb3 Rb8 10. Be2 Nf6 11. Nh4 O-O 12. Bg5 b5 13. Nxg6 hxg6 14. O-O Ne7 15. Qc2 Ned5 16. Rad1 Bf4 17. Bxf4 {Tosi,F (2404)-Oren,I (2309) ICCF 2007 1/2 (38)}) 6. Qxf3 Qd5 7. c3 O-O-O 8. Be2 Ne5 9. Qe3 Nf6 10. d4 Nc4 11. Bxc4 Qxc4 12. Ng5 h6 13. Nf3 Nd7 14. b3 Qa6 15. Qe2 Qc6 16. Bb2 {Welti,M (1884)-Krause,M ICCF 2007 1/2 (30)}) 5. Nxf6+ gxf6 (5... exf6 6. d4 Bd6 7. c3 (7. Be2 O-O 8. c3 (8. O-O Bf5 9. c4 Re8 10. Be3 Nb4 11. Ne1 c6 12. a3 Na6 13. Nf3 Qd7 14. Nh4 Be4 15. Re1 Rad8 16. g3 Qe6 17. Bd2 Bc7 18. Bc3 h6 19. b4 Bh7 {Justesen,A (2000)-Reede,A (1971) ICCF 2010 1/2 (48)}) 8... Re8 9. O-O Bg4 10. h3 Bf5 (10... Bh5 11. Re1 Qd7 12. Be3 Re7 13. Qb3 Na5 14. Qb5 Qxb5 15. Bxb5 Bxf3 16. gxf3 a6 17. Bd3 Nc6 18. f4 Rae8 19. Red1 g6 20. Kg2 f5 21. Kf3 Nb8 22. c4 {Baffo,J (2113)-Johnson,K (1798) ICCF 2016 1-0 (30)}) 11. Be3 Ne7 12. Bd3 Qd7 13. c4 c6 14. Re1 b5 15. b3 Bb4 16. Bxf5 Nxf5 17. Bd2 Rxe1+ 18. Qxe1 Ba3 {Markoja,J (2143)-Jaeger,F (1889) ICCF 2015 0-1 (45)}) 7... Bg4 8. Qe2+ Qe7 9. Qxe7+ Nxe7 10. Nd2 c6 11. Ne4 Bc7 12. h3 Bf5 13. Bd3 O-O 14. Kd1 b6 15. Kc2 Rad8 16. Re1 Rfe8 17. b4 {Foster,K (2266)-Foenander,P (2085) ICCF 2006 1-0 (54)}) 6. d4 Bf5 (6... Qd6 7. c3 Bg4 8. Qa4 a6 9. Be3 Rg8 10. O-O-O O-O-O 11. d5 Ne5 12. h3 Bd7 13. Qd4 Nxf3 14. gxf3 c6 15. Qh4 cxd5 16. Qxh7 Rg7 17. Qc2 Qc6 18. h4 {Kokorin,V (2156)-Veroni,A (1987) ICCF 2012 1-0 (49)}) (6... e5 7. Be3 Be6 8. Bb5 Qd6 9. c4 exd4 10. Nxd4 Bxc4 11. Bxc4 Qb4+ 12. Qd2 Nxd4 13. Bxd4 Qxc4 14. Rc1 Qe6+ 15. Qe3 Bb4+ 16. Ke2 Qxe3+ 17. fxe3 c6 18. Rcf1 {Vandermeulen,B (2586)-Vayser,V (2533) ICCF 2008 1-0 (25)}) 7. c3 Qd6 (7... Qd7 8. Be3 O-O-O 9. Qa4 a6 10. O-O-O Bg6 11. d5 Ne5 12. Qxd7+ Rxd7 13. Nxe5 fxe5 14. c4 Bg7 15. h4 h5 16. Rd2 Re8 17. c5 Kb8 18. Bc4 Rdd8 19. Re1 {Taksrud,V (2049)-Hagen,T ICCF 2009 1/2 (31)}) 8. Qb3 O-O-O 9. Be3 e6 10. O-O-O Ne7 11. c4 Qc6 12. Bd3 Bxd3 13. Rxd3 Rg8 14. Rg1 a6 15. Kb1 { Henri,J (2386)-Johnston,A (1925) ICCF 2009 1/2}) (3... Qd5 4. Ng3 (4. Qf3 Nc6 5. Nc3 Qe5+ 6. Qe2 Bf5 7. Qxe5 Nxe5 8. d4 Nc6 9. Bb5 O-O-O 10. Bxc6 bxc6 11. Nf3 f6 12. Be3 Bxc2 13. Rc1 Bd3 14. Rd1 Bg6 15. h4 Nh6 {o^orsteinsson,E (2323) -Salvador Marques,C (2403) ICCF 2006 0-1 (44)}) (4. d3 Nc6 5. Ne2 e5 6. N2c3 Bb4 7. Bd2 Qd8 8. a3 Be7 9. Be2 f5 10. Ng3 Nf6 11. Bh5+ Nxh5 12. Qxh5+ g6 13. Qe2 f4 14. Nf1 Bf5 15. O-O-O Qd7 {Ruiter,T (2174)-Ljungström,E (2155) ICCF 2008 0-1 (33)}) 4... Nc6 5. Nf3 e5 (5... Nf6 6. Be2 (6. d4 Bg4 7. Be2 O-O-O 8. c4 Qd7 9. d5 Bxf3 10. Bxf3 Ne5 11. Qe2 Nxf3+ 12. Qxf3 e6 13. O-O exd5 14. Bg5 dxc4 15. Rad1 Bd6 16. Nf5 Qb5 17. Nxd6+ cxd6 {Relyea,A (2128)-Elburg,J (2300) ICCF 2015 1/2 (37)}) 6... e5 7. d3 Be7 8. O-O O-O 9. c3 Rd8 10. Qc2 h6 11. Be3 Ng4 12. b3 Bc5 13. d4 exd4 14. Bxd4 Bxd4 15. Nxd4 Nxd4 16. cxd4 Qd6 17. Rfe1 { Moser,M-Beavan,R (1890) ICCF 2011 1/2 (37)}) 6. c3 Be6 7. Ng5 Nf6 8. Qa4 Bd7 9. Bc4 Qxg2 10. Bxf7+ Kd8 11. Qc4 e4 12. d4 exd3 13. Be3 Ne5 14. Qd4 Bd6 15. O-O-O {Wettering,G (2090)-Maître,F (2259) ICCF 2012 1/2}) (3... g6 4. Bc4 Bg7 5. Nf3 e6 6. d4 a6 7. O-O Ne7 8. Re1 O-O 9. Bg5 Kh8 10. Qd2 Nbc6 11. Rad1 f6 12. Bh6 Bxh6 13. Qxh6 Nf5 14. Qd2 Nd6 15. Bb3 {Kokorin,V (2358)-Hirsso,J (1857) ICCF 2010 1-0 (46)}) (3... a6 4. Nf3 Bg4 5. Be2 Nd7 6. O-O Ngf6 7. Nxf6+ Nxf6 8. Ne5 Bxe2 9. Qxe2 e6 10. Re1 Bd6 11. d4 O-O 12. Bg5 Be7 13. Rad1 Nd5 14. Bxe7 Qxe7 15. c4 {Domenche Redondo,F (1776)-Reyes Cortés,R (1537) ICCF 2015 1-0 (25)}) ( 3... Qd4 4. d3 e6 5. Nf3 Qd8 6. Be2 Be7 7. O-O h6 8. c3 Nf6 9. Ng3 Bd6 10. d4 Bxg3 11. fxg3 O-O 12. Bd3 Nbd7 13. Bc2 Nh7 14. Qd3 f5 15. Bd2 {Nacer,A (1937) -Arezki,M (1984) ICCF 2011 1-0}) (3... e6 4. a3 Be7 5. b4 Nf6 6. d3 Nxe4 7. dxe4 Qxd1+ 8. Kxd1 a5 9. b5 Nd7 10. Bb2 Nc5 11. Bxg7 Rg8 12. Bd4 Nxe4 13. Bd3 Nc5 14. Bxh7 Rxg2 15. Nf3 {Rixon,A (1360)-Bailey,S (2051) ICCF 2019 0-1 (30)}) (3... f5 4. Nc3 g6 5. Bb5+ Nd7 6. Nf3 c6 7. Bc4 b5 8. Bd3 e6 9. O-O {1-0 (9) Morgan,J (1194)-Singh,G ICCF 2019}) 4. Bc4 (4. Nf3 Ngf6 5. Nxf6+ (5. Nc3 b6 6. Bc4 a6 7. Qe2 e6 8. d4 b5 9. Bb3 c5 10. dxc5 Bxc5 11. O-O Bb7 12. Bf4 O-O 13. Rad1 Qb6 14. a4 b4 15. Nb1 Nh5 16. Be3 Bxe3 {Del Vivo,M (2215)-Traczewski,W (2038) ICCF 2019 1-0 (55)}) (5. Ng3 b6 6. Bc4 e6 7. O-O Bb7 8. d4 Bd6 9. Re1 O-O 10. c3 c5 11. dxc5 Bxc5 12. Bf4 Ng4 13. Re2 Rc8 14. Bb3 Bxf3 15. gxf3 Nxf2 16. Rxf2 Qh4 {Lloyd,G (2258)-Bell,A ICCF 2007 1/2 (35)}) 5... Nxf6 6. d4 (6. Bc4 Bf5 7. O-O e6 8. d4 Be7 9. h3 O-O 10. Qe2 c5 11. Bf4 cxd4 12. Rad1 Qb6 13. Nxd4 Bg6 14. c3 Rfd8 15. Nf3 Be4 16. Ne5 h6 17. Rfe1 Rxd1 {Rybák,M (2434) -Pinho,J (2386) ICCF 2012 1/2 (31)}) 6... Bg4 7. h3 Bh5 8. Be2 e6 9. O-O Be7 10. Be3 (10. c3 O-O 11. Ne5 Bxe2 12. Qxe2 Qd5 13. Re1 c5 14. Be3 Rfd8 15. c4 Qd6 16. Rad1 Qb6 17. Nf3 cxd4 18. Bxd4 Qa5 19. a3 Ne8 20. Ne5 Qc7 21. Nxf7 Kxf7 {Taksrud,V (2073)-Behling,H (2173) ICCF 2009 1/2 (45)}) 10... c6 11. Ne5 Bxe2 12. Qxe2 O-O 13. Rfd1 Nd5 14. Bd2 Bd6 15. c4 Ne7 {Marcos Nozar,J (2182)-Arias Duval,G (2298) ICCF 2016 1/2 (39)}) 4... Ndf6 (4... e6 5. d3 (5. Nf3 Ngf6 6. Qe2 Nxe4 7. Qxe4 Nf6 8. Qe2 (8. Qh4 Be7 9. d4 b6 10. Ne5 Bb7 11. O-O O-O 12. Bg5 Nd5 13. Bd3 h6 14. Bxe7 Nxe7 15. c3 c5 16. dxc5 Qd5 17. Qg3 Rfd8 18. Rfe1 Qxc5 19. Rad1 Qc7 {Henri,J (2334)-Panman,H (2355) ICCF 2009 1/2}) 8... Be7 9. O-O O-O 10. d4 b6 11. Rd1 Bb7 12. Ne5 Nd5 13. Bb3 Bf6 14. Qg4 Qe7 15. c4 Nb4 16. Bf4 Rfd8 {Larsson,M (2287)-Piccoli,F (2269) ICCF 2016 1/2 (53)}) (5. Qe2 Ngf6 6. Ng5 Nb6 7. Bb3 h6 (7... a5 8. c3 Nbd5 9. Bc2 a4 10. N1f3 h6 11. Ne4 Nf4 12. Qf1 Nxe4 13. Bxe4 Bd6 14. d4 Nd5 15. Qe2 O-O 16. Bd2 Nf6 17. Bc2 b5 18. O-O Bb7 19. Rfd1 {Herzog,K (2041)-Engels,J (1902) ICCF 2019 1/2 (29)}) 8. N5f3 a5 9. a4 Nbd7 10. d4 b6 11. Nd2 c5 12. Ngf3 Qc7 13. O-O Be7 14. Nb1 Ba6 15. Bc4 Bxc4 16. Qxc4 Nd5 {Hoekstra,I (2181)-Bontems,C (2078) ICCF 2018 1/2 (30)}) (5. d4 Ngf6 6. Ng5 Nb6 7. Bd3 c5 8. dxc5 Bxc5 9. Qe2 O-O 10. N1f3 Qc7 11. O-O Nbd7 12. a3 h6 13. Ne4 Be7 14. Re1 b6 15. Nxf6+ Nxf6 16. Ne5 Bd6 {Fels,B (2180) -Abrahams,F ICCF 2007 1-0 (36)}) 5... Ngf6 6. Qe2 (6. Nf3 Nb6 (6... Be7 7. O-O O-O 8. Qe2 c5 (8... a6 9. a3 Nb6 10. Bb3 Nxe4 11. dxe4 Bd7 12. Rd1 Qe8 13. Bf4 Rc8 14. Rd2 Bc6 15. Rad1 Bf6 16. Ne5 Bxe5 17. Bxe5 Nd7 18. Bc3 Bb5 19. Qg4 f6 20. Bxe6+ {Evans,S (1738)-Parenteau,M ICCF 2014 1-0}) 9. Re1 Qc7 10. Neg5 Nb6 11. Bxe6 fxe6 12. Nxe6 Qd6 13. Nxf8 Bxf8 14. h3 Bf5 15. b3 Re8 16. Qd2 Rxe1+ 17. Qxe1 Nbd5 18. Bb2 {Nielsen,J (2027)-Dziedzic,A (2026) ICCF 2011 1/2 (41)}) 7. Nxf6+ (7. Qe2 Nxc4 8. dxc4 Nxe4 9. Qxe4 Qf6 10. O-O Bd6 11. c3 Qg6 12. Qh4 f6 13. Be3 e5 14. c5 Be7 15. Qb4 O-O 16. Rfd1 a5 17. Qc4+ Qf7 18. Qb5 a4 { Glanville,C (2040)-Spagnoli,E (2185) ICCF 2015 0-1 (35)}) 7... Qxf6 8. Bb3 Bd7 9. d4 a5 10. c3 Bc6 11. Qe2 Bxf3 12. gxf3 Bd6 13. Bc2 O-O-O 14. Be4 Qh4 15. Qb5 f5 16. Bc2 Qh3 17. Ke2 e5 {Keast,D (2240)-Binder,K (2226) ICCF 2011 0-1}) 6... Nxe4 7. dxe4 Ne5 (7... Qf6 8. c3 b6 9. Nf3 Bb7 10. Bb5 h6 11. Bxd7+ Kxd7 12. a4 e5 13. a5 Bd6 14. O-O Rhd8 15. Nd2 Ke8 16. Nc4 Be7 17. f4 Ba6 18. axb6 axb6 19. Rxa6 {Hansen,K (2227)-Hinterberger,W (2281) ICCF 2007 0-1 (32)}) 8. Nf3 Nxc4 9. Qxc4 Qd6 10. O-O Qc5 11. Qb3 Be7 12. Be3 (12. Rd1 O-O 13. Be3 Qc6 14. Rd4 b6 15. Rad1 Ba6 16. Ne5 Qb5 17. Qxb5 Bxb5 18. c4 Be8 19. Nd7 Bxd7 20. Rxd7 Rfd8 21. Rxd8+ Rxd8 22. Rxd8+ Bxd8 23. b4 a6 {Ekebjærg,O (2635)-Kamenets,A (2540) ICCF 1999 1/2 (36)}) 12... Qb4 13. Qxb4 Bxb4 14. Bf4 Ba5 15. a4 f6 16. c3 { Allmer,C-Richards,J (1847) ICCF 2012 1-0 (43)}) (4... Ngf6 5. Bxf7+ Kxf7 6. Ng5+ Kg8 7. Ne6 Qe8 8. Nxc7 Qg6 9. Nxa8 b6 10. f3 (10. Qf3 Qxc2 11. d4 e6 12. a3 Nd5 13. Bd2 Qc6 14. Nh3 Qxa8 15. O-O N7f6 16. Rfe1 Bd6 17. Bf4 Bxf4 18. Nxf4 Kf7 19. Rac1 Bd7 20. Nd3 Rc8 21. Ne5+ Kg8 {Kriksciunas,B (2308)-Nestor,K (2316) ICCF 2006 1/2 (53)}) 10... Nd5 11. Qe2 Bb7 12. Nxb6 (12. d4 e5 13. dxe5 Nc5 14. Nc7 Nxc7 15. Be3 Nd5 16. Bxc5 Bxc5 17. O-O-O h6 18. Nh3 Kh7 19. Kb1 Rf8 20. Qd3 Ne3 21. Qxg6+ Kxg6 22. Rd2 Kh7 23. Nf2 Nxg2 {Kokorin,V (2157)-Popov,V (2281) ICCF 2017 1/2 (36)}) 12... axb6 13. d3 e5 14. Nh3 Bc5 15. Bd2 h6 16. c3 { Nielsen,J (2027)-May,J (1968) ICCF 2013 0-1 (43)}) (4... Ne5 5. Bb3 Bg4 6. f3 Bd7 7. d4 Ng6 8. Ne2 e6 9. O-O Nf6 10. Qd3 Be7 11. Nxf6+ Bxf6 12. Nc3 O-O 13. Ne4 Bc6 14. Be3 Re8 15. Rad1 Be7 16. Rfe1 {Kukula,P (2046)-Nielsen,J (1916) ICCF 2006 1/2 (34)}) 5. Ng5 (5. Ng3 e6 6. Nf3 Bd6 7. d4 Ne7 (7... a6 8. O-O b5 9. Bd3 Bb7 10. a4 b4 11. c4 Ne7 12. Bg5 Ng6 13. Bxf6 gxf6 14. Be4 Bxe4 15. Nxe4 f5 16. Nxd6+ Qxd6 17. Qc2 O-O-O 18. Rfe1 Rhg8 19. Rad1 {Pauwels,C (2559)-Diaz, S (2490) ICCF 2010 1/2 (52)}) (7... h6 8. Qe2 Ne7 9. Bd2 O-O 10. O-O-O b6 11. Rhe1 Bb7 12. Ne5 c5 13. Ng4 Nxg4 14. Qxg4 Ng6 15. dxc5 Ne5 16. Qh3 Nxc4 17. cxd6 Nxd2 18. Rxd2 Qg5 19. f4 {Kokorin,V (2175)-Burmeister,F (2209) ICCF 2018 1-0 (61)}) 8. O-O O-O 9. Qe2 (9. Bg5 Ned5 10. Ne4 h6 11. Bh4 g5 12. Nxd6 cxd6 13. Bg3 Qc7 14. Nd2 Bd7 15. Bd3 Ba4 16. h4 Rfc8 17. hxg5 hxg5 18. b3 Bc6 19. Nf3 Nc3 20. Qc1 Nce4 {Fuhr,M (2249)-Dewald,H (1881) ICCF 2012 1-0 (51)}) 9... a6 (9... h6 10. Bd3 b6 11. Ne4 (11. Rd1 Bb7 12. Ne5 Qc8 13. Nc4 Qd7 14. c3 Rad8 15. f3 Nfd5 16. Nxd6 Qxd6 17. Ne4 Qd7 18. Bc2 Rfe8 19. Bd2 Ng6 20. Nf2 Nde7 21. Ng4 Qd6 22. b4 Nf5 {Augereau,C (2118)-Guidoni,M (2171) ICCF 2011 1/2 (33)}) 11... Nf5 12. Bd2 Bb7 13. Rad1 Nh4 14. Ne5 Bxe5 15. dxe5 Nxe4 16. Bxe4 Bxe4 17. Qxe4 {1/2 (17) Runting,T (2445)-Rybák,M (2452) ICCF 2010}) 10. Bg5 b5 11. Bd3 Bb7 12. a4 b4 13. Rfd1 Ned5 14. Ne4 Be7 15. Nc5 Bxc5 16. dxc5 Qe7 {Geet,D (2629)-Bang,E (2631) ICCF 2006 1-0 (34)}) 5... e6 6. d4 Bd6 7. Ne2 (7. Qe2 h6 8. N5f3 Ne7 9. Ne5 O-O 10. Ngf3 c5 11. dxc5 Qa5+ 12. Bd2 Qxc5 13. O-O b6 14. Bd3 Bb7 15. c4 Rad8 16. Rad1 Nf5 17. Bc3 Nh5 18. b4 Qc7 {Palm,W (2319)-Gibney, E (2400) ICCF 2012 0-1 (82)}) 7... Ne7 8. O-O O-O 9. Bf4 (9. Ng3 b6 10. Re1 Bb7 11. Qd3 h6 12. N5e4 Nxe4 13. Nxe4 Nf5 14. c3 c5 15. dxc5 bxc5 16. Nxd6 Nxd6 17. Bb3 Nf5 18. Qxd8 Rfxd8 19. f3 a5 20. Kf2 Ba6 {Nielsen,J (1983)-Gorokhov,D (2006) ICCF 2010 1/2 (31)}) 9... Bd7 10. Re1 Ng6 11. Bg3 Bc6 12. Nc3 Bxg3 { Ekebjærg,O (2589)-Morgado,J (2510) ICCF 1994 1-0 (44)} 13. hxg3 Nd5 14. Nce4 h6 15. Nf3 Nf6 16. Nxf6+ Qxf6 17. c3 Rad8 18. Re3 Bxf3 19. Qxf3 Qxf3 20. gxf3 Ne7 21. Kg2 g6 22. a4 Nd5 23. Re5 c6 {1/2 (23) Godart,F-De Ridder,M (1975) ICCF 2013}) (1. f4 Nf6 2. Nf3 g6 3. b4 Bg7 4. Bb2 O-O 5. e3 d6 6. Be2 Nbd7 (6... Na6 7. a3 c5 8. Bxa6 bxa6 9. bxc5 Rb8 10. Bd4 dxc5 11. Bxc5 Ne4 12. Bxa7 Rb7 13. Bd4 Bxd4 14. exd4 Bg4 15. Nc3 Nxc3 16. dxc3 Rc7 17. h3 Be6 18. O-O {Fagerbekk, E (2182)-Kudryavtsev,N (2077) ICCF 2011 1/2 (32)}) (6... e5 7. fxe5 Ng4 8. O-O Nxe5 9. Nxe5 dxe5 10. Bc4 Nd7 11. Qe2 c6 12. Nc3 Nf6 13. a4 Bg4 14. Qf2 Bf5 15. Bb3 e4 16. h3 Nd5 17. Rab1 Nxc3 18. Bxc3 {Brotherton,T (2185)-Arounopoulos,S (2319) ICCF 2018 1/2}) 7. O-O Re8 8. a4 e5 9. fxe5 Nxe5 10. Nc3 c6 11. b5 (11. Nxe5 dxe5 12. b5 Bf5 13. Bc4 Re7 14. Qe2 Rc8 15. Bb3 Rd7 16. d3 e4 17. dxe4 Nxe4 18. Nxe4 Bxe4 19. Rad1 Bd5 20. Bxg7 Kxg7 21. bxc6 bxc6 22. c4 Be6 { Nevez,J-Garau,B (2154) ICCF 2013 1/2 (38)}) 11... Nfg4 12. Nxe5 Nxe5 {Darias Mateos,A (1842)-Arcenegui Rodrigo,J (2354) ICCF 2012 0-1}) (1. Nh3 d5 (1... e5 2. f4 (2. e4 d5 (2... Bc5 3. b4 Bxb4 4. Bc4 Nf6 5. O-O O-O 6. a3 Bc5 7. Ng5 h6 8. Nh3 Nxe4 9. d3 Nf6 10. Qe2 d5 11. Qxe5 Nc6 12. Qg3 Nd4 13. Re1 Re8 14. Rf1 { Dahlberg,S-Norman,A ICCF 2019 0-1 (25)}) (2... Nf6 3. Nc3 Bc5 4. Bc4 O-O 5. d3 c6 6. Qf3 b5 7. Bb3 a5 8. a3 d6 9. O-O Na6 10. Qg3 Qd7 11. Ng5 Qg4 12. Qxg4 Bxg4 13. h3 Bd7 14. Nf3 {Dymek,W (2058)-Moser,M (1864) ICCF 2012 0-1 (49)}) 3. exd5 Bxh3 4. gxh3 Qxd5 5. Rg1 Nc6 6. Bb5 Qxb5 7. d3 Nf6 8. a4 Qa5+ 9. c3 O-O-O 10. f4 exf4 11. Bxf4 Qf5 12. Rf1 Rxd3 13. Qxd3 Qxd3 {Dahlberg,S-Mehlhorn,I ICCF 2019 0-1}) (2. g3 Nc6 3. f4 d6 4. Nc3 Nf6 5. d3 Be7 6. Bg2 O-O 7. O-O a6 8. Nf2 d5 9. fxe5 Nxe5 10. d4 Nc6 11. Nh3 Bg4 12. Nf4 Be6 13. Nxe6 fxe6 { Brunner,R (2201)-Gagliardi,V (2122) ICCF 2012 1/2 (41)}) (2. d4 exd4 3. Qxd4 Nf6 4. Qe5+ Be7 5. Qg3 Nc6 6. Qxg7 Rg8 7. Qh6 d5 8. g3 Bf5 9. c3 Qd7 10. Bg2 Rg6 11. Qh4 Ng4 12. Qh5 Nce5 13. O-O Nf6 {Baumann,W (2038)-Gagliardi,V (2119) ICCF 2013 1/2 (40)}) (2. f3 d5 3. Nf2 c5 4. g3 Nc6 5. Bh3 h5 6. e4 Bxh3 7. Nxh3 c4 8. d3 h4 9. g4 cxd3 10. Qxd3 dxe4 11. fxe4 Qxd3 12. cxd3 Nb4 13. Na3 Nxd3+ { Kaytazki,L (1421)-Roxo,A (1947) ICCF 2019 0-1 (42)}) 2... d5 3. fxe5 Nc6 (3... Bxh3 4. d3 Bg4 5. Bf4 Ne7 6. Nc3 Ng6 7. Qd2 d4 8. Nd5 Qxd5 9. h3 Nxf4 10. Qxf4 Be6 11. c4 Qa5+ 12. Kf2 Nc6 13. b4 Bxb4 14. Qg5 Bd2 15. Qxg7 {Pye,J-Kawagoe,T ICCF 2010 0-1}) 4. d4 Nge7 5. Nc3 Nb4 6. a3 Nbc6 7. e4 g6 8. exd5 Na5 9. d6 cxd6 10. exd6 Qxd6 11. Bb5+ Bd7 12. Bxd7+ Qxd7 13. O-O {Jokipii,G (1295) -Anderson,L (1283) ICCF 2015 1-0 (42)}) (1... f5 2. d4 Nf6 3. Nc3 (3. Bg5 e6 4. Nf4 c5 5. e3 cxd4 6. Qxd4 Nc6 7. Qd2 Be7 8. Nc3 O-O 9. a3 d5 10. Be2 a6 11. O-O Qd6 12. Bh4 d4 13. exd4 e5 14. Bc4+ Kh8 {Moeckel,J (1703)-Baumann,W (1892) ICCF 2012 0-1 (38)}) 3... e6 4. Bg5 Bb4 5. Qd3 O-O 6. e3 d5 7. Nf4 c5 8. dxc5 Bxc5 9. Be2 Be7 10. O-O-O Nc6 11. h4 h6 12. Bxf6 Bxf6 13. Nb5 {Schmidt,K (2166) -Baumann,W (2038) ICCF 2013 1/2 (25)}) (1... Nf6 2. f4 (2. g3 e5 (2... g6 3. Bg2 Bg7 4. c4 c5 5. O-O O-O 6. Nc3 Nc6 7. Nf4 d6 8. d3 Bd7 9. Qd2 Qa5 10. Rb1 e6 11. a3 Qc7 12. b4 Rad8 13. Nb5 Qb8 14. Bb2 {Gagliardi,V (2119)-Baumann,W (2038) ICCF 2013 1-0 (60)}) 3. Bg2 Bc5 4. c3 (4. O-O Nc6 5. c3 O-O 6. b4 Bb6 7. a4 a6 8. Ba3 d6 9. a5 Ba7 10. b5 Kh8 11. bxc6 bxc6 12. Kh1 Bg4 13. Ng1 e4 14. f3 Bf5 15. c4 e3 {Rychkov,A-Kruk,S (1695) ICCF 2018 0-1 (43)}) 4... Bb6 5. d4 Nc6 6. d5 Ne7 7. Bg5 Neg8 8. Qd3 d6 9. c4 h6 10. Be3 Bxe3 11. fxe3 Ne7 12. O-O h5 13. Nc3 h4 {Pérez Conde,F (2052)-González Sánchez,F (2032) ICCF 2012 1/2 (33)}) (2. d4 g6 3. Nc3 Bg7 4. g3 d6 5. Bg2 O-O 6. O-O Nc6 7. Nf4 e5 8. dxe5 Nxe5 9. Nd3 c6 10. Bg5 Qa5 11. Nxe5 dxe5 12. Qc1 Bf5 13. h3 h5 {Dymek,W (2058) -Mosshammer,M (1891) ICCF 2012 0-1 (49)}) 2... d5 3. d4 (3. g3 Bf5 4. Bg2 Nc6 5. d4 Qd7 6. O-O Bxh3 7. Bxh3 Qxh3 8. e3 h5 9. Nc3 h4 10. Qf3 O-O-O 11. Qg2 hxg3 12. Qxh3+ Rxh3 13. hxg3 Ng4 14. Kg2 Rh2+ {Kaupat,T (1678)-Baumann,W (1892) ICCF 2012 0-1}) (3. Nf2 Nc6 4. d4 Bf5 5. e3 e6 6. Be2 Be7 7. O-O a6 8. c4 O-O 9. g4 Bxb1 10. Rxb1 h6 11. Bd2 Qd7 12. Rc1 a5 13. a3 a4 14. cxd5 Qxd5 {Baumann, W (1892)-Moeckel,J (1703) ICCF 2012 1-0 (37)}) 3... Bxh3 4. gxh3 Nc6 5. e3 e6 6. Nc3 Bb4 7. Bd2 h5 8. Bg2 Bxc3 9. Bxc3 Ne7 10. Qd3 Qd7 11. O-O-O Qa4 12. Rhg1 g6 13. Kb1 {Kaupat,T (1678)-Moeckel,J (1703) ICCF 2012 0-1 (27)}) (1... c5 2. g3 (2. c4 e5 3. Nc3 Nc6 4. g3 Be7 5. Bg2 d6 6. d3 a6 7. f4 h6 8. O-O Nf6 9. Nf2 O-O 10. Nfe4 Bd7 11. f5 Re8 12. Bd2 Qb6 13. Nxf6+ Bxf6 {Gagliardi,V (2122) -Moeckel,J (1703) ICCF 2012 1-0 (29)}) 2... Nc6 3. Bg2 Nf6 4. c4 d6 5. Nc3 e5 6. Ng5 Bg4 7. d3 Be7 8. O-O a6 9. Nge4 O-O 10. h3 Be6 11. Nxf6+ Bxf6 12. Nd5 Rb8 13. Bd2 {Brunner,R (2201)-Moeckel,J (1703) ICCF 2012 1-0 (49)}) (1... g6 2. e4 (2. f4 Bg7 3. g3 Nf6 4. Bg2 d5 5. O-O h5 6. c4 h4 7. Ng5 hxg3 8. hxg3 d4 9. Qb3 Nc6 10. c5 e6 11. Na3 d3 12. Nc4 dxe2 13. Re1 Nd4 {Kaytazki,L (1506) -Stoykov,I (1949) ICCF 2020 0-1}) 2... e6 3. Qf3 Bg7 4. d4 Ne7 5. Bg5 f6 6. Bxf6 Bxf6 7. Qxf6 Rf8 8. Qg7 h5 9. Qxg6+ Nxg6 10. Be2 Qg5 11. Nxg5 Nf4 12. Bc4 d5 13. Bb5+ {Dahlberg,S-Oles,A ICCF 2018 0-1 (51)}) (1... Nc6 2. d4 d5 3. g3 Nf6 4. Bg2 Bf5 5. Nc3 e5 6. dxe5 Nxe5 7. O-O c6 8. e4 dxe4 9. Ng5 Be7 10. Ngxe4 O-O 11. Bf4 Nxe4 12. Nxe4 f6 13. Qe2 {Schmidt,K (2169)-Mosshammer,M (1891) ICCF 2012 1/2}) (1... e6 2. g3 d5 3. Bg2 Nf6 4. d3 e5 5. O-O h5 6. Nc3 h4 7. Ng5 Bc5 8. e3 Nc6 9. h3 hxg3 10. fxg3 Qe7 11. a3 Nd8 12. d4 Bb6 13. Qe1 { Korman,J (1869)-Moser,M (1864) ICCF 2012 0-1 (42)}) 2. g3 (2. d4 Nf6 3. Nc3 (3. Nf4 Bf5 (3... Nc6 4. e3 e5 5. Nc3 exf4 6. Bb5 fxe3 7. Bxc6+ bxc6 8. Bxe3 Rb8 9. O-O Bd6 10. b3 Ng4 11. g3 Nxh2 12. Kxh2 Qh4+ 13. Kg2 Qh3+ 14. Kg1 Bg4 15. f3 { Moeckel,J (1703)-Brunner,R (2201) ICCF 2012 0-1}) 4. f3 Nc6 5. g4 Bd7 6. g5 Ng8 7. Nxd5 e6 8. Ndc3 h6 9. Ne4 hxg5 10. Nxg5 Nge7 11. Nc3 Nf5 12. d5 exd5 13. Nxd5 Bd6 14. f4 Be6 {Baumann,W (2038)-Mosshammer,M (1943) ICCF 2013 0-1 (55)}) 3... Nc6 4. Nf4 e6 5. e3 Bd6 6. Be2 O-O 7. O-O Bd7 8. a3 Ne7 9. b3 c6 10. Bb2 Qc7 11. Qd2 Ng6 12. g3 e5 13. Nxg6 hxg6 {Moeckel,J (1703)-Kaupat,T (1678) ICCF 2012 1/2}) (2. Nc3 e5 3. g4 (3. d4 Nc6 4. e4 dxe4 5. d5 Nd4 6. Be3 Bxh3 7. Bxd4 exd4 8. Nxe4 Qxd5 9. gxh3 Bb4+ 10. c3 Qxe4+ 11. Qe2 Qxe2+ 12. Kxe2 dxc3 13. Rb1 O-O-O 14. bxc3 Bxc3 {Moeckel,J (1703)-Gagliardi,V (2122) ICCF 2012 0-1}) 3... Bxg4 4. f3 Bxh3 5. Bxh3 Qh4+ 6. Kf1 Qxh3+ 7. Kf2 Nf6 8. a4 Bc5+ 9. e3 d4 10. Ne2 e4 11. fxe4 Nxe4+ 12. Ke1 Qh4+ 13. Kf1 Qf2# {Spiliopoulos,V-Benko,B (1947) ICCF 2016 0-1}) 2... c5 (2... e5 3. Bg2 (3. f4 Bxh3 (3... Nc6 4. fxe5 d4 5. Bg2 (5. Nf2 Nxe5 6. Bg2 Nf6 7. c3 c5 8. cxd4 cxd4 9. Qa4+ Nc6 10. O-O Bd7 11. d3 Be7 12. Nd2 O-O 13. Nb3 Nb4 14. Qa5 b6 15. Qe5 Rc8 16. Bd2 Nc2 {Dymek,W (2058) -Schmidt,K (2169) ICCF 2012 0-1 (54)}) 5... Nxe5 6. O-O Nf6 7. Nf2 (7. d3 Be7 8. Nd2 O-O 9. Nb3 a5 10. a4 Re8 11. e4 Bg4 12. Qe1 Bb4 13. Bd2 Be6 14. Nxa5 Bxd2 15. Qxd2 c5 16. Nxb7 Qc7 17. Nxc5 Qxc5 18. b4 Qd6 {Jean,L (1838)-Bontems, C (2136) ICCF 2016 0-1 (33)}) 7... Bc5 8. d3 O-O 9. Nd2 Qe7 10. Nb3 Bb6 11. Bg5 h6 12. Bxf6 Qxf6 13. Ng4 Qg5 14. Nxe5 Qxe5 15. Nd2 {Mosshammer,M (1891) -Schmidt,K (2169) ICCF 2012 1/2 (35)}) (3... e4 4. e3 Nc6 5. Bg2 Be6 6. O-O Qd7 7. Nf2 f5 8. a3 O-O-O 9. d3 Nf6 10. b4 h5 11. h4 a6 12. Bb2 Qe8 13. Qe2 Qg6 14. Kh2 Ng4+ 15. Nxg4 {Mosshammer,M (1943)-Gagliardi,V (2119) ICCF 2013 0-1}) 4. Bxh3 exf4 5. d4 fxg3 6. hxg3 Nc6 (6... Bd6 7. Qd3 Nc6 8. Nc3 Nb4 9. Qe3+ Be7 10. Qd2 Qd6 11. a3 Qxg3+ 12. Kf1 Nc6 13. Nxd5 Qd6 14. e4 Nf6 15. Nxe7 Qxe7 16. e5 Nd7 17. b4 f6 18. b5 {Dymek,W (2058)-Korman,J (1869) ICCF 2012 1-0 (28)}) 7. Nc3 Bb4 8. O-O Nf6 9. Bg5 Be7 10. Rf5 O-O 11. e3 g6 12. Rf1 Nh5 13. Bh6 Nxg3 14. Rf2 f5 {Mosshammer,M (1891)-Dymek,W (2058) ICCF 2012 1/2 (31)}) (3. d4 Nc6 (3... exd4 4. Qxd4 Nc6 5. Qa4 (5. Qd1 Bf5 (5... Nf6 6. Bg2 Bc5 7. O-O Bxh3 8. Bxh3 O-O 9. Nc3 Ne5 10. Na4 Bd6 11. Bg5 c6 12. f4 Nc4 {0-1 (12) Kaupat,T (1678) -Gagliardi,V (2122) ICCF 2012}) 6. Bg2 Nf6 7. O-O Qd7 8. Nf4 O-O-O 9. Nc3 Nb4 10. a3 Nxc2 11. Rb1 d4 12. Nd3 Ne3 13. fxe3 dxc3 14. bxc3 Be4 15. Bxe4 Nxe4 16. Qb3 b6 {Mosshammer,M (1943)-Schmidt,K (2166) ICCF 2013 1/2}) 5... Nf6 (5... Bf5 6. Bg2 Nf6 7. O-O Be7 8. c4 d4 9. Nf4 O-O 10. Bxc6 bxc6 11. Qxc6 Re8 12. Nd2 a5 13. Nf3 a4 14. Nd5 Nxd5 15. cxd5 Bf6 16. Qc4 Ra5 17. Bf4 {Gagliardi,V (2122) -Baumann,W (1892) ICCF 2012 0-1 (49)}) 6. Bg2 (6. Nf4 Bd6 7. Bg2 O-O 8. Nc3 d4 9. Nb5 Bc5 10. c3 dxc3 11. Nxc3 Ne5 12. O-O Bd7 13. Qc2 {1-0 (13) Gagliardi,V (2122)-Kaupat,T (1678) ICCF 2012}) 6... Bc5 7. Nf4 O-O 8. O-O Bf5 9. Nxd5 Nxd5 10. e4 Qf6 11. Qc4 Bd6 12. exf5 Nde7 13. Nc3 Nxf5 14. Ne4 Qg6 15. Re1 {Schmidt, K (2169)-Korman,J (1869) ICCF 2012 1-0 (27)}) 4. dxe5 Nxe5 5. Nf4 Nf6 6. Be3 c6 7. Bd4 Bd6 8. Bg2 O-O (8... c5 9. Bxe5 Bxe5 10. Nd3 Bd6 11. O-O O-O 12. Nc3 d4 13. Nb5 Be7 14. c3 a6 15. Na3 dxc3 16. bxc3 Qc7 17. Nc4 Be6 18. Ne3 Bd6 19. Rb1 Rab8 20. Qa4 {Schmidt,K (2169)-Dymek,W (2058) ICCF 2012 1/2 (34)}) 9. O-O (9. Nc3 Qe7 10. O-O Bf5 11. Nd3 Rfe8 12. a4 Nxd3 13. cxd3 Bc5 14. Bxc5 Qxc5 15. d4 Qd6 16. a5 Re7 17. Qb3 Qe6 18. e3 Bh3 19. Rfc1 Bxg2 20. Kxg2 a6 {Schmidt,K (2166)-Mosshammer,M (1943) ICCF 2013 1/2}) 9... c5 10. Bxe5 Bxe5 11. Qc1 Qb6 12. Nc3 Be6 13. a4 Rad8 14. a5 Qa6 {Schmidt,K (2169)-Moser,M (1864) ICCF 2012 1-0 (54)}) (3. Nc3 d4 4. Ne4 f5 5. Neg5 h6 6. Nf3 Nc6 7. c3 g5 8. Qb3 Qd6 9. Nhg1 Nf6 10. d3 a6 11. cxd4 e4 12. Ne5 Nxd4 13. Qf7+ Kd8 14. Nc4 Qe6 {Moser,M (1864)-Dymek,W (2058) ICCF 2012 0-1 (34)}) (3. f3 Bd6 4. Nf2 Ne7 (4... Be6 5. Nc3 Nf6 6. d3 O-O 7. Bg2 c5 8. O-O Nc6 9. e3 Qd7 10. Bd2 h6 11. a4 Rad8 12. e4 Be7 13. exd5 Nxd5 14. Nxd5 Bxd5 15. b3 f5 16. c4 {Korman,J (1869)-Mosshammer,M (1891) ICCF 2012 0-1 (36)}) 5. Bg2 c5 6. e4 d4 7. d3 Nbc6 8. O-O O-O 9. Na3 a6 10. Nc4 Bc7 11. f4 b5 12. Nxe5 Nxe5 13. fxe5 Bxe5 14. Ng4 f6 {Novkovic, S-Gomilsek,B ICCF 2006 0-1 (25)}) 3... Nc6 (3... Nf6 4. d4 (4. d3 Nc6 5. O-O ( 5. Nc3 Bc5 (5... h6 6. O-O g5 7. Kh1 Be6 8. f4 exf4 9. gxf4 g4 10. Nf2 g3 11. f5 Bxf5 12. e4 gxf2 13. exf5 Qd7 14. Qe2+ Be7 15. Qxf2 O-O-O 16. Nb5 a6 17. Na7+ {Moser,M (1864)-Schmidt,K (2169) ICCF 2012 0-1 (42)}) 6. Bg5 Be6 7. e4 dxe4 8. Nxe4 Be7 9. Be3 Nxe4 10. dxe4 Qxd1+ 11. Rxd1 Bxa2 12. f4 O-O 13. Nf2 a5 14. Nd3 f6 15. Bh3 a4 16. Bd7 Nd4 {Moser,M (1864)-Mosshammer,M (1891) ICCF 2012 0-1 (43)}) 5... Bg4 (5... Bc5 6. Nc3 h6 7. Na4 Bd6 8. f4 O-O 9. fxe5 Nxe5 (9... Bxe5 10. Nf4 Re8 11. Nc3 (11. c3 Bg4 12. Rf2 b6 13. h3 Bc8 14. c4 Bd4 15. e3 Bxe3 16. Bxe3 Rxe3 17. cxd5 Nd4 18. Nc3 Rxg3 19. Ne4 Nxe4 20. dxe4 c5 21. dxc6 Nxc6 22. Qxd8+ Nxd8 {Brunner,R (2175)-Baumann,W (2038) ICCF 2013 1/2 (27)} ) 11... Bg4 12. h3 d4 13. Ncd5 Nxd5 14. Bxd5 Bc8 15. c4 dxc3 16. Bxf7+ Kxf7 17. Qb3+ Ke7 18. Ng6+ Kd6 19. Nxe5 Nxe5 20. d4 Ng6 21. bxc3 {Brunner,R (2201) -Baumann,W (1892) ICCF 2012 1-0 (31)}) 10. d4 (10. Nf4 Neg4 11. Nc3 d4 12. Ne4 Re8 13. Bf3 Nxe4 14. dxe4 Qg5 15. Qd3 Bd7 16. Rd1 Rac8 17. a4 c5 18. c3 Bxf4 19. Bxf4 Qh5 20. h4 g5 21. Bd2 gxh4 {Brunner,R (2175)-Gagliardi,V (2119) ICCF 2013 0-1 (41)}) 10... Neg4 11. Qd3 c6 12. Nc3 Re8 13. Bd2 b5 14. a3 a5 15. e4 b4 16. axb4 Bxb4 17. e5 {Brunner,R (2175)-Mosshammer,M (1943) ICCF 2013 1/2 (36)}) 6. Nc3 Bb4 7. f4 Nd4 8. Nf2 Bh5 9. fxe5 Nd7 10. g4 Bg6 11. Nxd5 Ba5 12. c3 Ne6 13. Nf4 O-O 14. Nxg6 hxg6 15. Bxb7 Rb8 {Brunner,R (2201)-Kaupat,T (1678) ICCF 2012 1-0}) 4... Nc6 (4... e4 5. O-O (5. Nc3 Bb4 6. O-O O-O 7. Bg5 Bxc3 8. bxc3 Nbd7 9. f3 h6 10. Bf4 Re8 11. fxe4 Nxe4 12. Qd3 Nb6 13. Nf2 Bf5 14. Nxe4 Bxe4 15. Bxe4 Rxe4 {Driessen,C (1875)-Jongman,R (2185) ICCF 2010 0-1 (50)}) 5... Nc6 6. Bg5 Be7 7. Nf4 O-O 8. c4 dxc4 9. e3 Bf5 10. Nc3 Re8 11. Qa4 a6 12. Qxc4 Nd7 13. Bxe7 Qxe7 14. Qb3 Nf6 15. Rfc1 Na5 16. Qa4 {Mosshammer,M (1891) -Korman,J (1869) ICCF 2012 1-0 (27)}) 5. dxe5 Nxe5 6. O-O c6 (6... Bc5 7. Nd2 O-O 8. Nf4 c6 9. Nf3 Nxf3+ 10. Bxf3 Bf5 11. b3 Qd7 12. Bb2 Ne4 13. c4 Rfe8 14. cxd5 cxd5 15. Rc1 Bb6 16. Nxd5 Rad8 17. Nxb6 axb6 18. Qxd7 {Baumann,W (1892) -Kaupat,T (1678) ICCF 2012 1-0}) 7. Nd2 (7. Nc3 Bd6 8. Nf4 Bf5 9. Be3 h5 10. Bd4 h4 11. Qc1 Qe7 12. Nd3 Rh5 13. Re1 hxg3 14. hxg3 O-O-O 15. Bxa7 Rdh8 16. Bd4 Neg4 17. Nf4 Rh2 18. f3 g5 {Baumann,W (2038)-Schmidt,K (2166) ICCF 2013 0-1 (30)}) 7... Bd6 8. Nf3 Nxf3+ 9. exf3 O-O 10. Qd3 Qb6 11. b3 Re8 12. c3 Qc7 13. Be3 Re5 14. Qd2 Bf5 15. Nf4 {Baumann,W (1892)-Gagliardi,V (2122) ICCF 2012 1/2 (35)}) 4. O-O (4. c3 Bf5 5. d3 Be7 (5... Nf6 6. Ng5 h6 7. Nf3 Be7 8. O-O O-O 9. a4 Qd7 10. Na3 Rfe8 11. Nc2 Bh3 12. Ne3 Bxg2 13. Kxg2 Rad8 14. a5 h5 15. Qb3 Bc5 16. Rd1 d4 17. Nc2 {Schmidt,K (2166)-Gagliardi,V (2119) ICCF 2013 0-1 (77)}) 6. f4 Nf6 7. Nf2 O-O 8. O-O h6 9. fxe5 Nxe5 10. d4 Nc4 11. b3 Nd6 12. Nd2 Re8 13. c4 Ng4 14. Nxg4 Bxg4 15. cxd5 Bf6 {Gagliardi,V (2119)-Mosshammer,M (1943) ICCF 2013 1/2 (41)}) 4... h5 5. c4 (5. f4 h4 6. fxe5 hxg3 7. e4 Bc5+ 8. Kh1 Bxh3 9. Bxh3 Rxh3 10. Qg4 Rxh2# {0-1 (10) Kaytazki,L (1506)-Stefanov,D (2289) ICCF 2020}) (5. d3 h4 6. Ng5 Be7 7. Nf3 hxg3 8. hxg3 Nf6 9. c4 d4 10. b4 Bxb4 11. Qa4 Ng4 12. Nbd2 Be7 13. Rb1 a5 14. Ba3 Ra6 15. Rb5 Bd7 16. Rxb7 Nb4 { Gagliardi,V (2119)-Schmidt,K (2166) ICCF 2013 0-1 (65)}) 5... dxc4 6. Qa4 Be7 7. Nc3 (7. Kh1 h4 8. Ng1 Qd6 9. Nc3 Nf6 10. Nb5 Qd7 11. Qxc4 a6 12. Bxc6 bxc6 13. Nc3 c5 14. Qb3 c4 15. Qxc4 Bb7+ 16. e4 a5 17. Re1 Ng4 {0-1 (17) Korman,J (1869)-Dymek,W (2058) ICCF 2012}) 7... h4 8. Qxc4 Be6 9. Bxc6+ bxc6 10. Qxc6+ Bd7 {0-1 (10) Korman,J (1869)-Schmidt,K (2169) ICCF 2012}) (2... Bxh3 3. Bxh3 e6 4. O-O Nf6 5. d3 Nc6 6. c4 h5 7. Bg2 h4 8. cxd5 Nxd5 9. Nc3 hxg3 10. hxg3 Qd7 11. Qb3 O-O-O 12. Nxd5 exd5 13. Be3 g6 14. Rfc1 {Mosshammer,M (1943) -Baumann,W (2038) ICCF 2013 1/2 (29)}) 3. Bg2 (3. d4 cxd4 4. Qxd4 Nc6 5. Qd3 Nf6 6. Nc3 e5 7. Bg2 Nb4 8. Qd1 Bf5 9. e4 dxe4 10. Be3 Qc8 11. a3 Bxh3 12. Bxh3 Qxh3 13. axb4 Bxb4 14. Bd2 Rd8 {Kaupat,T (1678)-Brunner,R (2201) ICCF 2012 0-1} ) 3... Nc6 4. O-O (4. Nc3 Nf6 5. f3 d4 6. Ne4 Nxe4 7. fxe4 h5 8. d3 e5 9. Nf2 Be7 10. h3 a5 11. a4 Be6 12. h4 g5 13. hxg5 Bxg5 14. Bh3 Be3 15. Bxe6 Qg5 { Kaytazki,L (1506)-Tsenkov,L (2395) ICCF 2020 0-1 (39)}) (4. c4 d4 5. Nf4 g5 6. Nd3 Qb6 7. h4 g4 8. Nf4 e6 9. d3 Nf6 10. Nd2 Bd7 11. Ne4 Nxe4 12. Bxe4 O-O-O 13. Rb1 f5 14. Bg2 Ne5 15. Bd2 Bc6 {Gagliardi,V (2119)-Brunner,R (2175) ICCF 2013 1/2 (31)}) (4. d3 e5 5. f4 Bd6 6. fxe5 Bxe5 7. O-O Nf6 8. Nd2 O-O 9. Nf3 Bb8 10. Nf4 Qb6 11. b3 Bg4 12. a3 c4+ 13. Kh1 Re8 14. bxc4 dxc4 15. Bd2 Qa6 { Gagliardi,V (2122)-Brunner,R (2201) ICCF 2012 1/2 (40)}) 4... e5 (4... h5 5. d3 h4 6. Nf4 d4 7. e4 g5 8. Nd5 e6 9. Bxg5 Qxg5 10. Nc7+ Kd8 11. Nxa8 hxg3 12. fxg3 Qh6 13. h3 Bd6 14. Qd2 Qg7 15. g4 Nf6 16. Na3 {Kaytazki,L (1525) -Gavrijski,D (2199) ICCF 2020 0-1 (46)}) (4... Nf6 5. c4 dxc4 6. Na3 h5 7. Nxc4 h4 8. Ng5 hxg3 9. hxg3 Nd5 10. d4 cxd4 11. Nf3 Bh3 12. Bxh3 Rxh3 13. Nxd4 Qc8 14. Nxc6 bxc6 15. e4 Qe6 16. Qf3 {Mosshammer,M (1891)-Moser,M (1864) ICCF 2012 1-0 (43)}) 5. d3 (5. f4 Bxh3 6. Bxh3 exf4 7. Nc3 fxg3 8. hxg3 Nf6 9. e4 dxe4 10. d3 exd3 11. Bg5 Be7 12. Bf5 h6 13. Bxf6 Bxf6 14. Bxd3 O-O 15. Qh5 Bxc3 16. bxc3 Qd6 {Mallassagne,F-Beveridge,C (2124) ICCF 2015 0-1 (26)}) 5... Be7 6. f4 (6. c4 d4 (6... Nf6 7. cxd5 Nxd5 8. Nc3 Nxc3 9. bxc3 O-O 10. f4 Bf6 11. Qb3 Rb8 12. Nf2 Be6 13. Qb2 exf4 14. Bxf4 Be5 15. Bxe5 Nxe5 16. Qa3 Qg5 17. Qxa7 Qe3 18. a4 {Moser,M (1864)-Korman,J (1869) ICCF 2012 1/2 (27)}) 7. f4 h5 8. fxe5 h4 9. Nf4 Nxe5 10. b4 (10. Nd5 hxg3 11. hxg3 Nf6 12. Bf4 Nxd5 13. Bxd5 Bg5 14. Nd2 Qe7 15. Qa4+ Kd8 16. Qa5+ b6 17. Qa3 Ng6 18. Bxg5 Qxg5 19. Rf3 Nf4 20. Nf1 Nxd5 21. cxd5 Bg4 {Baumann,W (1892)-Brunner,R (2201) ICCF 2012 0-1 (41)}) (10. Qb3 hxg3 11. hxg3 Nf6 12. Nd2 Kf8 13. Nd5 Neg4 14. Nxf6 gxf6 15. Rf3 f5 16. Nf1 Kg7 17. Bd2 b6 18. Re1 Bd6 19. e3 Be5 20. Qd1 Be6 21. e4 Qd7 {Baumann,W (2038) -Brunner,R (2175) ICCF 2013 0-1 (56)}) 10... cxb4 11. a3 hxg3 12. hxg3 Nh6 13. axb4 Nf5 14. Qe1 Bd6 15. Nd5 Ng6 16. Rxf5 Bxf5 17. Qf2 Bh3 {Mosshammer,M (1943) -Brunner,R (2175) ICCF 2013 0-1 (47)}) 6... Nf6 7. fxe5 Nxe5 8. c4 dxc4 9. dxc4 Qxd1 10. Rxd1 Nxc4 11. Nc3 (11. b3 Nb6 12. Nc3 Bd7 13. Bf4 Bc6 14. Bxc6+ bxc6 15. Rac1 O-O 16. Kg2 Rad8 17. Nf2 Nfd5 18. Bd2 Rfe8 19. Nce4 Nb4 20. g4 Nxa2 21. Ra1 Nb4 22. Rxa7 Bh4 {Schmidt,K (2166)-Brunner,R (2175) ICCF 2013 1/2 (36)} ) 11... O-O 12. b3 Bxh3 {Brunner,R (2175)-Schmidt,K (2166) ICCF 2013 1/2 (25)}) (1. Nf3 Nf6 (1... d5 2. b4 (2. g3 e5 3. Bg2 (3. d4 e4 4. Bg5 f6 5. Qd2 fxg5 6. Ne5 Bd6 7. Bg2 Qf6 8. O-O Bxe5 9. Nc3 Bxd4 10. Nxd5 Qe5 11. c4 Nf6 12. Rab1 Be6 13. Qa5 Nxd5 14. e3 Bb6 {Tarrant,J-Pronovost,D (1759) ICCF 2015 0-1 (27)}) 3... e4 (3... Nc6 4. c3 (4. Nc3 Nf6 5. d4 e4 6. Ne5 Nxe5 7. Bg5 Ng6 8. O-O c6 9. Bxf6 Qxf6 10. e3 Qg5 11. h3 Bd6 12. h4 Nxh4 13. gxh4 Qxh4 14. f3 Qh2+ 15. Kf2 Bg3+ {Latta,D-Ishler,M ICCF 2012 0-1}) (4. d4 e4 5. Ne5 Nce7 6. f3 f6 7. Ng4 Bxg4 8. fxg4 h5 9. gxh5 f5 10. Bf4 Qd7 11. e3 Nf6 12. O-O Nxh5 13. Bg5 Ng8 14. c4 Be7 15. Bxe7 Nxe7 {Bourgoin,C (1813)-Edwards,K (2183) ICCF 2019 0-1 (40)}) 4... Nf6 5. O-O (5. Qa4 Bd6 6. d3 Bd7 7. Qb3 a5 8. Nbd2 a4 9. Qc2 O-O 10. e4 dxe4 11. Nxe4 Nxe4 12. dxe4 Qf6 13. Bg5 Qe6 14. a3 Bc5 15. Bd2 Na5 16. Ng5 Qb6 {Armstrong,J (1545)-Burridge,R (2117) ICCF 2017 0-1 (41)}) 5... Be7 6. Qa4 (6. Qb3 O-O 7. Na3 Rb8 8. d3 h6 9. Nc2 Be6 10. Be3 d4 11. c4 dxe3 12. Nxe3 Bc5 13. Nd2 Nd4 14. Qd1 Qd6 15. Nc2 Nc6 16. a3 a5 17. Nb3 Bb6 {Armstrong,J (1618) -Petrie,A ICCF 2012 0-1 (45)}) 6... O-O 7. d3 h6 8. Na3 Be6 9. Kh1 a6 10. Be3 Re8 11. Ng1 Qd7 12. c4 b5 13. cxb5 axb5 14. Qc2 b4 15. Nb1 {Armstrong,J (1618) -Karayilan,N ICCF 2012 0-1 (36)}) (3... Bd6 4. d4 (4. O-O Nf6 5. c4 e4 6. Nd4 Be5 7. cxd5 O-O 8. Nc2 Nxd5 9. Bxe4 Bh3 10. d4 Bf6 11. Re1 c6 12. Bf3 Be6 13. e4 Nb6 14. Nc3 Na6 15. Ne2 Qd7 {Gravelle,G (1642)-Schenker,L (1494) ICCF 2018 1-0 (40)}) 4... e4 5. Nfd2 Nf6 6. e3 O-O 7. Nc3 Bg4 8. Ne2 Bxe2 9. Qxe2 Nc6 { 0-1 (9) Cantrell,D-Benson,K ICCF 2015}) 4. Ng1 (4. Nd4 Bc5 (4... c5 5. Nb3 (5. Nb5 a6 (5... Be6 6. c3 Qd7 7. N5a3 Nc6 8. O-O h5 9. d3 exd3 10. Qxd3 h4 11. Bg5 f6 12. Be3 O-O-O 13. Nc2 g5 14. Ne1 Ne5 15. Qc2 Ng4 16. Nf3 hxg3 17. Kh1 { Armstrong,J (1506)-Buchan,A ICCF 2020 0-1 (29)}) 6. N5a3 (6. N5c3 d4 7. Nxe4 f5 8. Nec3 (8. Nxc5 Bxc5 9. e3 Nc6 10. Bxc6+ bxc6 11. O-O Nf6 12. Qe2 O-O 13. Qc4+ Qd5 14. Qxd5+ Nxd5 15. a3 a5 16. exd4 Bxd4 17. d3 f4 18. Kg2 f3+ 19. Kg1 Bh3 { Armstrong,J (1557)-Pibernik,D (1664) ICCF 2013 0-1 (42)}) 8... dxc3 9. Nxc3 Nf6 10. e4 Nc6 11. O-O Be7 12. d3 O-O 13. Re1 Be6 14. e5 Nd5 15. f4 Qd7 16. Bd2 Rfd8 17. a3 Rac8 {Louro,E (1919)-Preussner,M (2004) ICCF 2018 0-1 (34)}) (6. d3 axb5 7. h4 f5 8. h5 h6 9. d4 cxd4 10. Qxd4 Nc6 11. Qe3 Nf6 12. Nc3 d4 13. Qd2 dxc3 14. Qxc3 Bb4 15. O-O Bxc3 16. bxc3 O-O 17. Bf4 Nxh5 {Feeney,W-Ismailov,R ICCF 2016 0-1}) 6... Nf6 (6... b5 7. c3 Nf6 8. Nc2 Nc6 9. Ne3 d4 10. cxd4 cxd4 11. Nf1 Nb4 12. a3 Qa5 13. h3 Be6 14. Nh2 Rc8 15. O-O Nc2 16. b4 Bxb4 17. d3 e3 18. Bb2 {Armstrong,J (1661)-Ruiz Bernal,I ICCF 2007 0-1 (37)}) (6... f5 7. c3 Nf6 8. Nc2 Nc6 9. Ne3 Bd6 10. d3 O-O 11. Na3 Be6 12. O-O Qe7 13. Nac2 b5 14. Qd2 f4 15. Nd1 e3 16. fxe3 fxe3 17. Ncxe3 Rac8 18. Nf2 {Armstrong,J (1651) -Burridge,R (2058) ICCF 2015 0-1 (36)}) 7. c4 d4 8. d3 (8. O-O Bd6 9. d3 exd3 10. exd3 O-O 11. Nd2 Nc6 12. Ne4 Nxe4 13. Bxe4 Re8 14. Re1 Be6 15. Qh5 g6 16. Qh6 Bf5 17. Bg5 Qd7 18. Bf6 Bf8 19. Qf4 Bxe4 {Michas,J (1789)-Sereni,V (1811) ICCF 2018 0-1 (55)}) 8... exd3 9. Qxd3 Be7 10. O-O Nc6 11. Nd2 O-O 12. Nf3 Re8 13. Bd2 Bg4 14. h3 Be6 15. Ng5 Bd7 16. e3 h6 {Bourgoin,C (1813)-Pritchard,O (2114) ICCF 2019 0-1 (35)}) 5... c4 (5... Nc6 6. Nxc5 (6. d3 exd3 7. cxd3 Nf6 8. Bg5 Be7 9. Be3 d4 10. Bd2 O-O 11. Qc2 Nd7 12. Bh3 b6 13. Bg2 Bb7 14. Nc1 Qc7 15. O-O Nce5 16. Bxb7 Qxb7 17. Bf4 h6 {Armstrong,J (1481)-Dunn,J (1529) ICCF 2019 1/2}) 6... Bxc5 7. e3 Nf6 8. h3 O-O 9. d4 Bd6 10. Nc3 a6 11. a3 Qc7 12. O-O Be6 13. Ne2 g5 14. f4 gxf4 15. exf4 Kh8 16. g4 Nxg4 17. hxg4 {Ylönen, O-Cencetti,A (1713) ICCF 2009 0-1 (34)}) (5... f5 6. d3 Nf6 7. Bg5 h6 8. Bxf6 gxf6 9. e3 Bd6 10. Nc3 O-O 11. Qh5 exd3 12. Qg6+ Kh8 13. Qxh6+ Kg8 14. Bxd5+ Rf7 15. Qg6+ {1-0 (15) Mäki-Torkko,M-Kissick,P (1548) ICCF 2006}) 6. Nd4 Bc5 7. c3 (7. Nb5 Qb6 8. a4 (8. N5c3 Bxf2+ 9. Kf1 Ne7 10. e3 Qf6 11. Ke2 Bg4+ 12. Bf3 Qxf3+ 13. Kf1 Bh3# {0-1 (13) Armstrong,J (1556)-Ortiz Elías,J (1776) ICCF 2012} ) 8... a6 9. N5c3 Bxf2+ 10. Kf1 Ne7 11. e3 Qf6 12. Ne2 Bg4 13. Nbc3 Bxe3+ 14. Nf4 Bxd1 15. Nxd1 Bxf4 16. gxf4 Qxf4+ 17. Ke1 Nbc6 18. d3 Qh4+ {Armstrong,J (1545)-Blake,M (2223) ICCF 2017 0-1 (26)}) (7. e3 Nf6 8. Nc3 Bxd4 9. exd4 Bg4 10. Ne2 Nc6 11. O-O Nxd4 12. f3 exf3 13. Bxf3 Nxf3+ 14. Kg2 Nd4 15. Qe1 Nxc2 16. Qd1 Nxa1 17. Qa4+ Bd7 18. Qa3 Nc2 {Armstrong,J (1618)-Cairney,J ICCF 2009 0-1 (29)}) 7... Nc6 (7... Nf6 8. d3 (8. b3 O-O 9. O-O Re8 10. bxc4 dxc4 11. Na3 Bxd4 12. cxd4 a6 13. Nc2 Nc6 14. Bb2 Be6 15. Re1 Rc8 16. Rc1 Qa5 17. Bc3 Qh5 18. h4 g5 19. d5 Nxd5 {Dam,J (2070)-Kaczmarek,R (1996) ICCF 2019 0-1 (25)}) (8. Nc2 h5 9. d4 cxd3 10. exd3 Bg4 11. Qd2 h4 12. h3 hxg3 13. d4 gxf2+ 14. Qxf2 Bd6 15. hxg4 Rxh1+ 16. Bxh1 Nxg4 17. Qg2 Qh4+ 18. Ke2 Qh5 19. Kf1 Nd7 {Armstrong,J (1481)-Beveridge,C (2142) ICCF 2019 0-1 (26)}) (8. O-O Nc6 9. d3 Bxd4 10. cxd4 cxd3 11. exd3 Bg4 12. Qb3 O-O 13. dxe4 Nxd4 14. Qd3 dxe4 15. Qd2 Rc8 16. h3 Rc2 {0-1 (16) Gravett,A-Dijk,H (2171) ICCF 2017}) (8. e3 Bg4 (8... O-O 9. b4 Be7 10. Na3 Nc6 11. Nxc6 bxc6 12. Bb2 a5 13. Nc2 Qb6 14. Rb1 axb4 15. Ra1 Bg4 16. f3 exf3 17. Bxf3 Bxf3 18. Qxf3 b3 19. Nd4 bxa2 {0-1 (19) Horváth,P-Laine,E (1901) ICCF 2017}) 9. f3 exf3 10. Nxf3 Nc6 11. Qc2 Qd7 12. O-O h5 13. d4 cxd3 14. Qxd3 Bxf3 15. Bxf3 Ne5 16. Qd1 h4 17. Kf2 hxg3+ 18. hxg3 Rh2+ 19. Bg2 Qh3 { Armstrong,J (1515)-Buchan,A (2006) ICCF 2020 0-1 (25)}) 8... cxd3 9. exd3 Nc6 10. dxe4 (10. O-O O-O 11. Be3 Bg4 12. Qc2 Bxd4 13. cxd4 Bf5 14. dxe4 Bxe4 15. Bxe4 {1/2 (15) Vötter,H (2073)-Eschert,U (2316) ICCF 2020}) (10. Be3 Bxd4 11. cxd4 Bg4 12. Qb3 O-O 13. h3 Bh5 14. g4 Na5 15. Qb4 Bg6 16. g5 Nh5 17. Nc3 exd3 18. O-O Nc4 19. Nxd5 Nxe3 20. Ne7+ Kh8 21. fxe3 Ng3 {Soto Palomo,C (1870) -Bennett,P (2362) ICCF 2015 0-1 (46)}) 10... dxe4 11. Be3 Bxd4 12. cxd4 Bg4 13. Qa4 O-O 14. Nc3 Re8 15. O-O a6 16. h3 b5 17. Qc2 Bf3 18. Nxb5 Qd7 19. Nc3 { Seeger,M-Cantelli,A ICCF 2007 1/2 (34)}) (7... Bxd4 8. cxd4 Nf6 9. b3 cxb3 10. axb3 Nc6 11. O-O Bf5 12. e3 h5 13. Nc3 h4 14. Ba3 a6 15. Qe1 hxg3 16. fxg3 Be6 17. Na4 Ng4 18. h4 Qc7 19. Nc5 {Keber,E (2269)-Popov,V (2079) ICCF 2016 1-0 (60)}) 8. Nxc6 bxc6 9. O-O Nf6 10. b3 (10. d4 cxd3 11. exd3 O-O 12. d4 Bd6 13. Bg5 Rb8 14. b4 h6 15. Be3 Ng4 16. Bd2 f5 17. h3 Nxf2 18. Kxf2 Ba6 19. Rg1 f4 20. Ke1 f3 21. Bxf3 exf3 {Azzi,R (1614)-Bars,J (2359) ICCF 2015 0-1 (25)}) 10... O-O (10... cxb3 11. axb3 O-O 12. Ba3 Bxa3 13. Nxa3 a5 14. d4 exd3 15. exd3 Bg4 16. Qc2 Qe7 17. Rfe1 Qc7 18. d4 Rab8 19. Nb1 c5 20. dxc5 Qxc5 21. Nd2 Rfe8 22. Qd3 {Savsek,A (1892)-Lixa,A (1862) ICCF 2018 1/2 (38)}) 11. bxc4 dxc4 12. Na3 (12. Ba3 Qe7 13. Bxc5 Qxc5 14. Qa4 Rd8 15. Qb4 Qh5 16. Qxc4 Be6 17. Qa6 Ng4 18. h3 Nf6 19. d4 Bc8 20. Qxc6 Bxh3 21. f3 Bxg2 22. Kxg2 Rac8 23. Qb7 Rb8 { MacMillen,A (1739)-Sherwood,A ICCF 2015 0-1 (30)}) (12. Qa4 Be6 13. Ba3 Bxa3 14. Qxa3 Qd5 15. Qc1 Rfd8 16. f3 Qc5+ 17. e3 exf3 18. Bxf3 Nd7 19. Qc2 Ne5 20. Be4 g6 21. a4 Rab8 22. Rf4 f5 23. Bg2 Rb3 {Mäki-Torkko,M-Winges,M (1999) ICCF 2006 0-1}) 12... Qd5 13. Qa4 Bg4 14. Re1 Qf5 {Aydin,C-Abbey,W ICCF 2015 0-1}) ( 4... a6 5. e3 c5 6. Ne2 Nf6 7. c3 g6 8. O-O Bg7 9. Kh1 O-O 10. Ng1 Be6 11. Bh3 Bxh3 12. Nxh3 Qd7 13. Ng1 Nc6 14. b3 b5 15. Na3 b4 16. Nc2 {Armstrong,J (1481) -Gilbert,R (1781) ICCF 2019 1/2 (63)}) (4... Nf6 5. O-O Bc5 6. c3 O-O 7. d3 Bxd4 8. cxd4 Nc6 9. Be3 Bf5 10. Nd2 exd3 11. exd3 Bxd3 12. Re1 Nb4 13. Qb3 Qd6 14. a3 Nc2 15. Qxd3 Nxe1 16. Rxe1 {Giannoni,S-Bernard,F ICCF 2014 1-0 (61)}) 5. O-O Bxd4 6. e3 Bb6 7. d4 Nf6 8. b4 O-O 9. h3 Be6 10. a4 c6 11. Ba3 Re8 12. b5 cxb5 13. axb5 Bxd4 14. exd4 Bg4 15. hxg4 Qc8 {Manannikova,L (1704)-Kazantsev,R (2429) ICCF 2018 0-1}) 4... Bh3 (4... e3 5. Kf1 exf2 6. Kxf2 Nf6 7. h3 Be7 8. d3 O-O 9. Nf3 c5 10. Bg5 h6 11. Bxf6 Bxf6 12. c3 Be6 13. Kg1 Nc6 14. Nbd2 Qc7 15. Qe1 Rfe8 16. Kh2 {Plyusnin,V (2064)-Trofimov,V (2418) ICCF 2018 0-1 (35)}) 5. Kf1 Bxg2+ 6. Kxg2 Qd7 7. d3 Nc6 8. Bg5 f6 9. Be3 O-O-O 10. dxe4 dxe4 { 0-1 (10) Baydashkin,A (2309)-Chernov,I (2140) ICCF 2018}) (2. a3 Nf6 (2... c5 3. e3 (3. c4 d4 4. e3 a5 5. exd4 cxd4 6. g3 e6 7. Bg2 Ne7 8. d3 Nec6 9. O-O Be7 10. Qe2 Nd7 11. Nbd2 O-O 12. Ne4 e5 13. Bd2 a4 14. Rae1 Ra6 {Muri,H (2308) -Doderer,H (2320) ICCF 2019 1/2 (55)}) (3. b4 Nd7 4. d4 cxd4 5. Qxd4 a5 6. Qxd5 axb4 7. Qb3 e6 8. e3 Nc5 9. Qb2 Qa5 10. Nbd2 Nf6 11. Nc4 Qa6 12. Qb1 Qa5 13. Nxa5 {1-0 (13) Stöckert,M (2461)-Szczepanski,Z (2514) ICCF 2015}) (3. d4 cxd4 4. c3 dxc3 5. Nxc3 Nf6 6. Bg5 e6 7. e4 Be7 8. exd5 Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5+ 11. Be2 Be6 12. O-O O-O 13. Rc1 Nc6 14. Bb5 Rac8 {Hernández Delgado,J (1855)-Pérez López,A (1978) ICCF 2014 0-1 (66)}) (3. e4 dxe4 4. Ng5 Nf6 5. Bc4 e6 6. Nc3 Be7 7. O-O O-O 8. Ngxe4 Nc6 9. Re1 a6 10. Nxf6+ Bxf6 11. Ne4 Be7 12. d3 b5 13. Ba2 Bb7 14. Be3 Nd4 {Pellen,M (1909)-Humbert,P ICCF 2008 1-0 (39)}) ( 3. g3 e6 4. Bg2 Nc6 5. O-O Be7 6. d3 Nf6 7. Nbd2 e5 8. c4 O-O 9. cxd5 Nxd5 10. Nc4 f6 11. Qb3 Kh8 12. Ne3 Nc7 13. Bd2 Rb8 14. Rfc1 Be6 {Coope,D (1894) -Pinchon,F (2325) ICCF 2015 0-1 (61)}) 3... Nc6 4. b4 cxb4 5. axb4 Nxb4 6. c4 dxc4 7. Ba3 Nd3+ 8. Bxd3 Qxd3 9. Nc3 f6 10. Nd4 h5 11. Nd5 e5 12. Nc7+ Kf7 13. Nxa8 Bxa3 14. Qe2 {Stöckert,M (2455)-Szczepanski,Z (2433) ICCF 2019 1/2 (36)}) (2... g6 3. e3 (3. g3 Nc6 4. Bg2 e5 5. d3 Nf6 6. O-O Bg7 7. Nbd2 (7. Nc3 O-O 8. Bg5 Be6 9. e4 d4 10. Ne2 Qd6 11. Ne1 a5 12. h3 Nd7 13. Bd2 b5 14. f4 f6 15. Nf3 Nc5 16. b3 b4 17. a4 Rae8 18. Nh4 exf4 {Raijmaekers,C (2047)-Balutescu,M ICCF 2008 1-0 (48)}) 7... Qe7 8. e4 dxe4 9. Nxe4 Nxe4 10. dxe4 Be6 11. Qe2 O-O-O 12. b4 h6 13. Re1 Rhe8 14. c3 Kb8 {Lloveras Rebell,J-Van Damme,L (2255) ICCF 2007 1-0 (45)}) 3... Bg7 4. c4 Nf6 5. d4 O-O 6. cxd5 Qxd5 7. Nc3 Qa5 8. b4 Qb6 9. e4 Rd8 10. Be3 c6 11. h3 a5 12. b5 a4 13. Be2 cxb5 14. O-O {Mantu,E (1729)-Molin, L ICCF 2015 1-0 (44)}) (2... a5 3. g3 Bg4 4. Bg2 Nd7 5. O-O Ngf6 6. d3 e5 7. h3 Bxf3 8. Bxf3 Bc5 9. c4 dxc4 10. Bxb7 Rb8 11. Bg2 cxd3 12. Qxd3 O-O 13. Nd2 Qe7 14. Nc4 {Pellen,M (1909)-Boudesseul,R ICCF 2008 1-0 (33)}) 3. b4 (3. d4 c6 ( 3... e6 4. Bf4 (4. b3 b6 5. Bb2 Bb7 6. e3 Nbd7 7. Bd3 Bd6 8. O-O O-O 9. Ne5 Ne4 10. Nd2 f5 11. Ndf3 Rf6 12. Nxd7 Qxd7 13. Ne5 Qe7 14. f3 Ng5 15. a4 a5 { Filipchenko,V (2378)-Oikamo,T (2514) ICCF 2014 1/2 (27)}) 4... c5 (4... Bd6 5. e3 (5. Bxd6 Qxd6 6. e3 O-O 7. c4 b6 8. Nc3 c5 9. cxd5 exd5 10. Be2 Nc6 11. O-O Bf5 12. Rc1 Rfd8 13. Nh4 Be6 14. h3 c4 15. Qc2 Rab8 16. Nf5 Qd7 {Krecak,Z (2367)-Sheretyuk,A (2426) ICCF 2009 1/2 (34)}) 5... Bxf4 6. exf4 b6 7. Nbd2 O-O 8. Rc1 Qd6 9. g3 c5 10. Be2 Ba6 11. c4 Rd8 12. O-O cxd4 13. Nb3 dxc4 14. Bxc4 Bxc4 15. Rxc4 Nc6 16. Qd3 {Krecak,Z (2327)-Fordham-Hall,C (2362) ICCF 2012 1/2} ) 5. e3 Nc6 6. h3 (6. Nc3 a6 7. Be2 Bd6 8. dxc5 Bxc5 9. O-O O-O 10. Qd2 Qe7 11. Ne5 Bd7 12. Nxd7 Qxd7 13. h3 Bd6 14. Bd3 Rfd8 15. Bg5 Be7 16. Rad1 Ne5 17. Bf4 Nxd3 {Krecak,Z (2367)-Raijmaekers,R (2433) ICCF 2009 0-1 (55)}) (6. Be2 Qb6 7. Nc3 Nh5 8. Be5 cxd4 9. Bxd4 {0-1 (9) Torres,C (2394)-Ballow,J (2416) ICCF 2016} ) 6... b6 (6... Bd6 7. dxc5 Bxc5 (7... Bxf4 8. exf4 Ne4 9. Nbd2 Nxc5 10. b4 Nd7 11. g3 O-O (11... b6 12. c4 Ne7 13. Bg2 Bb7 14. Nd4 O-O 15. Rc1 Nf6 16. O-O Rc8 17. Re1 Nc6 18. N4f3 Ne7 19. Ne5 Rc7 20. Qb3 dxc4 21. Rxc4 Bxg2 22. Kxg2 Rxc4 23. Ndxc4 {Krecak,Z (2327)-Lovakovic,F (2272) ICCF 2012 1/2 (32)}) 12. Bg2 Nb6 13. O-O Bd7 14. c3 Qc7 15. a4 Ne7 16. a5 Nbc8 17. a6 bxa6 18. Ne5 Be8 19. Qc2 { Stöckert,M (2455)-Sochor,F (2483) ICCF 2015 1/2 (44)}) 8. c4 O-O 9. Nc3 Re8 10. Bg5 Be7 11. cxd5 Nxd5 12. Bxe7 Ncxe7 13. Nxd5 Nxd5 14. Bd3 Qe7 15. Rc1 b6 16. O-O Bb7 17. Qa4 h6 18. Rfd1 {Stöckert,M (2461)-Raijmaekers,R (2493) ICCF 2015 1/2 (50)}) (6... c4 7. Be2 Bd6 8. Bxd6 Qxd6 9. b3 cxb3 10. cxb3 Bd7 11. Nbd2 O-O 12. O-O Rac8 13. Qb1 Rc7 14. Qb2 Rfc8 15. Ne5 Ne7 16. Rfc1 Be8 17. b4 Ba4 18. Rc5 {Krecak,Z (2327)-Zylla,J (2347) ICCF 2012 1/2}) 7. c3 Bb7 8. Bb5 a6 9. Be2 Bd6 10. O-O Bxf4 11. exf4 O-O 12. g3 cxd4 (12... Qc7 13. Re1 Ne7 14. Bd3 Nc8 15. Nbd2 Nd6 16. Rc1 a5 17. Ne5 Rac8 18. Qe2 cxd4 19. cxd4 Qxc1 20. Rxc1 Rxc1+ 21. Kg2 Rfc8 22. Ng4 Nfe4 23. Ne3 h6 24. g4 {Stöckert,M (2455)-Macayo,R (2476) ICCF 2015 1/2 (51)}) 13. Nxd4 Qc7 14. Nd2 Na5 15. Qc2 Rfe8 16. h4 Rad8 17. Rfe1 Nc4 18. Rad1 Nd6 19. Bd3 Nde4 20. N2f3 Ng4 21. Re2 h6 22. Rde1 Re7 23. Qc1 Ree8 24. Bc2 Kh8 25. h5 b5 26. Bb1 Re7 27. Kg2 Ree8 28. Rf1 Kg8 29. Rd1 Rc8 30. Bc2 Rcd8 31. Rf1 Bc8 32. Rfe1 Bb7 33. Rd1 f6 34. Nh4 e5 35. Ndf5 Nexf2 36. Rxf2 d4+ 37. Kf1 Qc6 38. Bb3+ Kh8 39. Rg2 d3 40. Qd2 Qd7 41. fxe5 Nxe5 42. Qf4 Nc4 43. Bxc4 bxc4 44. Qg4 Bxg2+ 45. Kxg2 Rb8 46. Qxc4 Rxb2+ 47. Kh3 d2 48. Qg4 Kh7 49. Nf3 Rc8 50. Rxd2 Rxd2 51. Nxd2 Rc5 52. Qg6+ Kh8 53. g4 Qd3+ 54. Kh4 Rxf5 55. Qxf5 Qxd2 56. Qf1 g5+ {1/2 (56) Stöckert,M (2455)-Ylönen,O (2472) ICCF 2015 Irregular Openings}) (3... g6 4. Bf4 (4. c4 Bg7 5. cxd5 O-O 6. h3 Ne4 7. e3 Qxd5 8. Bd3 (8. Nbd2 Nxd2 9. Bxd2 c5 10. Rc1 cxd4 11. Bc4 Qf5 12. exd4 Be6 13. O-O Bxc4 14. Rxc4 Nc6 15. Rc5 Qd7 16. Be3 Rac8 17. Ne5 {1/2 (17) Krecak,Z (2314)-Shpakovsky,A (2506) ICCF 2012}) 8... c5 9. O-O cxd4 10. exd4 Nc6 11. Bxe4 Qxe4 12. Nc3 Qf5 13. d5 Ne5 14. Nd4 Qf6 15. Qb3 Bd7 {Krecak,Z (2327)-Ivanovic,Z (2325) ICCF 2012 0-1 (53)}) 4... Bg7 5. e3 O-O 6. Nc3 c5 ( 6... Bf5 7. Bd3 Ne4 8. Nxe4 dxe4 9. g4 Bxg4 10. Bxe4 Nc6 11. h3 Bh5 12. c3 Re8 13. O-O e5 14. dxe5 Nxe5 15. Bxe5 Bxe5 16. Qxd8 Raxd8 17. Nxe5 Rxe5 18. Bxb7 { Moser,M-Lucas,K (1778) ICCF 2011 0-1 (52)}) 7. dxc5 Nbd7 8. Be2 Nxc5 (8... Ne4 9. Nxd5 Bxb2 10. O-O Ndf6 11. Nxf6+ Bxf6 12. Be5 Bxe5 13. Nxe5 Qc7 14. Qd4 Bf5 15. Ng4 Bxg4 16. Bxg4 Nxc5 17. Qb4 Rfd8 18. Rfd1 b6 19. Bf3 Rac8 20. h3 { Stöckert,M (2456)-Bellmann,H (2470) ICCF 2010 1/2 (26)}) 9. Be5 Ncd7 10. Bg3 Ne4 11. Nxe4 dxe4 12. Nd4 Nc5 13. O-O a6 14. Qe1 e5 15. Nb3 {Krecak,Z (2394) -Ljubicic,A (2491) ICCF 2007 1/2 (56)}) (3... Bf5 4. c4 (4. Bf4 e6 5. e3 Bd6 6. Bd3 Bxf4 7. exf4 Ne4 8. O-O O-O 9. Qe2 Nd6 10. Nbd2 Nd7 11. Rfe1 Bxd3 12. Qxd3 c5 13. c4 b5 14. b3 bxc4 15. bxc4 dxc4 {Krecak,Z (2367)-Svilponis,T (2428) ICCF 2009 1/2}) 4... dxc4 5. e3 e6 (5... c5 6. Bxc4 e6 7. Nc3 a6 8. O-O Nc6 9. Re1 Bg4 10. h3 Bh5 11. Be2 Qc7 12. Qa4 Rd8 13. dxc5 Bxc5 14. b4 Be7 15. b5 axb5 16. Nxb5 Qb6 17. Nbd4 {Krecak,Z (2314)-Gerola,G (2510) ICCF 2012 1/2 (34)}) 6. Bxc4 Nbd7 7. O-O (7. Qe2 Nb6 8. Ba2 Be7 9. Nc3 Ne4 10. h3 O-O 11. O-O c5 12. Nxe4 Bxe4 13. Rd1 Qc7 14. Bd2 cxd4 15. Nxd4 Rfd8 16. Rac1 Qe5 17. Bc3 Qg5 18. f3 Bd5 {Krecak,Z (2320)-Trani,F (2081) ICCF 2011 1-0 (50)}) 7... Bd6 (7... Be7 8. Nc3 O-O 9. Qe2 Ne4 10. Rd1 c6 11. Bd3 Ndf6 12. Nxe4 Bxe4 13. Bxe4 Nxe4 14. Ne5 Qc7 15. Qc2 Nf6 16. Bd2 a5 17. Rac1 Rfd8 18. g3 a4 19. Nd3 {Stöckert,M (2455)-Michálek,M (2477) ICCF 2015 1/2 (68)}) 8. Qe2 O-O 9. Nbd2 e5 10. dxe5 Nxe5 11. Nxe5 Bxe5 12. e4 Bg4 13. f3 Bd7 14. f4 Bd4+ 15. Kh1 {Krecak,Z (2320) -Thew,B (2210) ICCF 2011 1-0 (47)}) 4. h3 (4. Nc3 Bf5 5. Bf4 e6 6. e3 Be7 7. Bd3 Nbd7 8. h3 O-O 9. O-O Bg6 10. Re1 Bh5 11. g4 Bg6 12. Bxg6 hxg6 13. e4 dxe4 14. Nxe4 Nxe4 15. Rxe4 {Stöckert,M (2456)-Tomecek,J (2444) ICCF 2010 1/2 (71)}) (4. Bf4 Bf5 5. Nh4 Be4 6. f3 Bg6 7. Nc3 e6 8. Nxg6 hxg6 9. g4 Nbd7 {0-1 (9) Torres,C (2394)-Proof,M (2431) ICCF 2016}) 4... Bf5 5. Nc3 e6 6. Bf4 Bd6 7. Bxd6 Qxd6 8. e3 O-O 9. Bd3 Nbd7 10. O-O Rfe8 11. Re1 Rad8 12. Rc1 a6 13. Ne2 b5 14. Ng3 g6 {Evstigneev,S (2344)-Sergiev,S (2336) ICCF 2014 1-0 (71)}) (3. e3 c5 (3... Bf5 4. c4 c6 5. Nc3 e6 6. Nh4 Bg4 7. Qb3 Qc7 8. d4 Be7 9. h3 Bh5 10. g4 Bg6 11. Nxg6 hxg6 12. g5 dxc4 13. Qxc4 Nd5 14. e4 Nxc3 15. Qxc3 {Krecak,Z (2313)-Urbánek,S (2285) ICCF 2011 1-0 (58)}) (3... Bg4 4. c4 Nc6 5. d4 e5 6. dxe5 Nxe5 7. cxd5 Bxf3 8. gxf3 Qxd5 9. Qxd5 Nxd5 10. f4 Ng6 11. Bd2 Nh4 12. Be2 O-O-O 13. Nc3 Nf6 14. O-O-O Bc5 15. Kc2 {Krecak,Z (2374)-Raykin,L (2494) ICCF 2009 1/2 (77)}) (3... b6 4. d4 e6 5. c4 Bb7 6. b4 a5 7. b5 Ne4 8. Nbd2 Bd6 9. cxd5 exd5 10. Bb2 Nd7 11. Be2 O-O 12. O-O Qe7 13. Rc1 Rfc8 14. a4 c5 15. dxc5 { Sferle,M (2509)-Florea,M (2445) ICCF 2015 1/2 (49)}) 4. d4 (4. c4 Nc6 (4... d4 5. b4 (5. exd4 cxd4 6. b4 a5 7. b5 e6 8. d3 Bd6 9. g3 Nbd7 10. Bg2 e5 11. O-O O-O 12. Re1 Qc7 13. Nbd2 Nc5 14. Nb3 Nfd7 15. Nxc5 Nxc5 16. Ng5 Bf5 {Krecak,Z (2314)-Horvat,M (2409) ICCF 2012 1/2 (35)}) 5... a5 6. bxc5 Nc6 7. Nxd4 Nxd4 8. exd4 Qxd4 9. Nc3 e5 10. Be2 Bxc5 11. O-O Bd7 12. Rb1 Bc6 13. d3 Qd7 14. Bg5 Bxa3 15. Bxf6 gxf6 16. Bf3 {Torres,C (2377)-Vohl,G (2385) ICCF 2015 1/2}) 5. cxd5 Nxd5 6. d4 e6 7. dxc5 Bxc5 8. Qc2 Bd6 9. Bd2 O-O 10. Bd3 h6 11. Nc3 Nf6 12. Ne4 Nxe4 13. Bxe4 Bd7 14. Bc3 Qc7 {Krecak,Z (2320)-Stieger,H (2409) ICCF 2011 1/2 (32)}) 4... cxd4 (4... c4 5. Be2 Bf5 6. Nc3 e6 7. Ne5 Nc6 8. g4 Bg6 9. h4 h6 10. Nxg6 fxg6 11. b3 cxb3 12. cxb3 a6 13. Bd3 Kf7 14. Qc2 {1-0 (14) Moser,M-Sperandio,A (2010) ICCF 2011}) 5. exd4 Bg4 (5... Bf5 6. Bb5+ Nbd7 7. O-O e6 8. Nh4 Bg4 9. f3 Bh5 10. Nc3 Bd6 11. Qe2 O-O 12. g4 Bg6 13. g5 Nh5 14. f4 a6 15. Nxg6 {Krecak,Z (2314)-Voiculescu,C (2532) ICCF 2012 1/2 (62)}) 6. Bd3 Nc6 7. Be3 e6 8. O-O Bd6 9. Re1 O-O 10. Nbd2 Bh5 11. h3 Bg6 (11... Rc8 12. Rc1 Bb8 13. c3 Re8 14. Qb3 {Stöckert,M (2458)-Dahlström,R (2483) ICCF 2010 1/2 (39) }) 12. Bxg6 hxg6 13. c4 Qc7 14. c5 Bf4 {Romanov,E-Fröhlich,S (1631) ICCF 2013 1/2 (36)}) (3. c3 e6 4. d3 Be7 5. Qc2 O-O 6. e4 c5 7. e5 Nfd7 8. d4 Nc6 9. Bd3 f5 10. b4 cxd4 11. cxd4 Nb6 12. O-O Bd7 13. Qe2 Be8 14. Nbd2 Bh5 {Green,M (1995)-Rasmussen,E (2344) ICCF 2013 0-1 (46)}) (3. g3 c6 (3... Nbd7 4. d3 e6 5. Bg2 Be7 6. O-O O-O 7. c4 c5 8. Qc2 h6 9. cxd5 exd5 10. Rd1 Nb6 11. Nbd2 Be6 12. e3 Rc8 13. b3 a5 14. Bb2 a4 {Coope,D (1958)-Bieker,P (1986) ICCF 2013 1/2 (25)} ) (3... Bf5 4. Bg2 e6 5. O-O Be7 6. c4 O-O 7. cxd5 exd5 8. Qb3 Nbd7 9. d3 Nc5 10. Qc2 c6 11. Nd4 Bg4 12. Nd2 Ne6 13. Nxe6 Bxe6 14. Nf3 h6 15. b4 {Coope,D (1894)-Sepers,G (1998) ICCF 2015 1/2 (31)}) (3... c5 4. Bg2 Nc6 (4... e6 5. O-O Be7 6. d3 O-O 7. Nbd2 Bd7 8. Ne5 Bc6 9. Ndf3 Nbd7 10. Nxc6 bxc6 11. Bf4 Ne8 12. c4 Bd6 13. Bd2 Qc7 14. b4 a6 15. cxd5 cxd5 16. Rc1 {Coope,D (1894)-Caballón Castellares,E (1755) ICCF 2015 1-0 (46)}) 5. O-O e5 6. d3 Be7 7. Nbd2 O-O 8. c3 Bg4 9. b4 a6 10. Bb2 Re8 11. h3 Bxf3 12. Nxf3 Rc8 13. Qb3 b5 14. Rfd1 Bf8 15. a4 {Coope,D (1958)-Likhachev,S (2147) ICCF 2013 0-1 (63)}) (3... Bg4 4. Bg2 Nbd7 5. O-O e6 6. d3 Be7 7. c4 O-O 8. cxd5 exd5 9. Nc3 c6 10. Bf4 Re8 11. b4 Nf8 12. Nd4 a5 13. Qb3 axb4 14. axb4 Qb6 15. Be3 {Coope,D (1958)-Quizielvu,M (1895) ICCF 2013 0-1 (39)}) 4. Bg2 Bf5 (4... Bg4 5. d3 Nbd7 6. O-O e5 7. h3 Bh5 8. g4 Bg6 9. Nbd2 e4 10. Nd4 Qc7 11. f4 exf3 12. exf3 O-O-O 13. f4 h6 14. N2b3 Bh7 15. Bd2 Be7 16. Rc1 {Huybrecht,F (2187)-Palmkoeck,W (2349) ICCF 2007 1-0 (31)}) 5. d3 Nbd7 (5... h6 6. O-O e6 7. Nc3 Be7 8. b3 Nbd7 9. Bb2 Qc7 10. e4 Bg6 11. Qe2 O-O 12. e5 Nh7 13. Rfe1 Bh5 14. Qe3 Ng5 15. Nxg5 {Lloveras Rebell, J (2345)-Garscha,K (2328) ICCF 2008 1/2 (62)}) 6. O-O e5 7. Nbd2 Bd6 8. e4 Be6 9. d4 dxe4 10. Nxe5 Nxe5 11. dxe5 Bxe5 12. Nxe4 O-O 13. Qxd8 Raxd8 14. Bg5 Bf5 {Bush,F (2045)-Kellam,J ICCF 2006 1/2 (43)}) (3. c4 d4 (3... dxc4 4. e3 Be6 5. Qc2 c5 6. Bxc4 Bxc4 7. Qxc4 e6 8. b4 cxb4 9. axb4 a6 10. b5 Nbd7 11. Ba3 a5 12. O-O Bxa3 13. Nxa3 O-O 14. Rfc1 Nb6 15. Qe2 {Krecak,Z (2367)-Nierobisz,J (2388) ICCF 2008 1/2 (47)}) (3... e6 4. g3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Qa4 Nbd7 8. Qxc4 Nb6 9. Qc2 c6 10. d4 Bd7 11. e4 Rc8 12. Nc3 Re8 13. b4 h6 14. h3 Nh7 15. Be3 {Sonomoto,S (2150)-Yoshida,T (1770) ICCF 2008 0-1 (36)}) 4. d3 Nc6 (4... c5 5. g3 Nc6 6. b4 a6 7. Bg2 e5 8. O-O Qc7 9. e3 dxe3 10. Bxe3 cxb4 11. d4 exd4 12. Nxd4 Nxd4 13. Bxd4 Be7 14. c5 bxa3 15. Nxa3 O-O 16. Nb5 {Stöckert,M (2460) -Krakovský,P (2195) ICCF 2009 1/2 (43)}) 5. g3 e5 6. Bg2 a5 7. O-O Be7 8. e3 O-O 9. exd4 exd4 10. Nbd2 Bg4 11. h3 Bf5 12. Ne1 Re8 13. g4 Be6 14. f4 Bc8 { Sonomoto,S (2150)-Hasidume,S (1868) ICCF 2008 0-1 (25)}) 3... a5 (3... Bf5 4. e3 e6 5. h3 c5 6. bxc5 Bxc5 7. Nh4 Nc6 8. Nxf5 exf5 9. d4 Bd6 10. Bd3 Ne4 11. Nd2 O-O 12. c4 dxc4 13. Bxc4 Bc7 14. Nxe4 fxe4 15. O-O {Jung,R (2227)-Jaeger,F (1919) ICCF 2014 1-0 (48)}) (3... Bg4 4. d3 e6 5. Nbd2 a5 6. b5 Bd6 7. c4 O-O 8. Bb2 c6 9. Qa4 Nbd7 10. bxc6 Nc5 11. Qc2 bxc6 12. Ne5 Bh5 13. Nxc6 Qb6 14. Bxf6 {Coope,D (1709)-Eilmes,D (2321) ICCF 2006 0-1 (47)}) (3... g6 4. Bb2 Bg7 5. d3 O-O 6. Nbd2 a5 7. g3 Qd6 8. b5 Qb6 9. Rb1 Ng4 10. e3 Bxb2 11. Rxb2 Nd7 12. c4 Qd6 13. Qb3 Nc5 14. Qc2 dxc4 15. Nxc4 {Coope,D (1709)-Sergiev,S (2260) ICCF 2006 0-1 (42)}) 4. b5 (4. c3 e5 5. Nxe5 axb4 6. Bb2 bxc3 7. Nxc3 c6 8. e3 Nbd7 9. d4 Nxe5 10. dxe5 Nd7 11. Be2 Be7 12. O-O O-O 13. a4 Nc5 14. Ba3 Bf5 15. g4 {Blondel,F (1975)-Deneuville,C (2239) ICCF 2013 0-1 (42)}) 4... Nbd7 5. Bb2 g6 6. e3 Bg7 7. c4 c5 8. cxd5 O-O 9. Qc2 Nxd5 10. Bxg7 Kxg7 11. Bc4 N7b6 12. Bxd5 Qxd5 13. Nc3 Qd8 {Coope,D (1748)-Fajs,B (2205) ICCF 2007 0-1 (40)}) 2... Bg4 (2... e5 3. Nxe5 Bxb4 4. c4 Ne7 5. Qb3 a5 (5... Qd6 6. Bb2 f6 7. a3 Bc5 8. Nd3 d4 9. Nxc5 Qxc5 10. d3 Na6 11. Nd2 Bd7 12. Qc2 Nf5 13. g3 Bc6 14. Nf3 Bxf3 15. exf3 O-O-O 16. Bh3 h5 17. O-O {Ringsborg,A (2383)-Ottesen,S (2356) ICCF 2014 1/2 (29)}) 6. cxd5 Qxd5 7. Qxd5 {1-0 (7) Wesener,L-Hristov,P ICCF 2010}) 3. Bb2 (3. e3 e6 (3... e5 4. Bb2 Nd7 5. Be2 Bd6 6. c4 c6 7. cxd5 cxd5 8. Nc3 Be6 9. Na4 b6 10. Rc1 Ne7 11. Nc3 O-O 12. a3 h6 13. Ba6 e4 14. Nd4 Ne5 15. Nxe6 {Avchinikov,V (2342)-Krebs,J (2347) ICCF 2018 1/2 (29)}) 4. a3 Bd6 5. d4 Nf6 6. Be2 Bxf3 7. Bxf3 Nbd7 8. O-O Ne4 9. g3 Ndf6 10. Bb2 h5 11. h4 Bxg3 12. fxg3 Nxg3 13. Rf2 Nfe4 {0-1 (13) Shaver,R-Hart,T ICCF 2008}) (3. Ne5 Bf5 4. Bb2 (4. e3 e6 5. a3 Bd6 6. Bb2 f6 7. Nf3 Ne7 8. c4 c5 9. bxc5 Bxc5 10. Nd4 O-O 11. Nxf5 Nxf5 12. d4 Bb6 13. Bd3 Ba5+ 14. Nd2 Ne7 15. O-O Kh8 {Gasanov,E-Esen,C ICCF 2009 1-0}) (4. f4 e6 5. a3 Bd6 6. Bb2 f6 7. Nf3 Bxf4 8. e3 Bd6 9. c4 c6 10. c5 Bc7 11. Nd4 Ne7 12. Nc3 Be5 13. Nxf5 Nxf5 14. Bd3 Nh6 15. Qh5+ Nf7 {Vlasov, A-Grego,L (1935) ICCF 2008 0-1 (29)}) 4... e6 5. a3 a5 6. b5 Nf6 7. e3 Nbd7 8. Nxd7 Qxd7 9. Be2 c6 10. a4 Rc8 11. O-O Bd6 12. bxc6 bxc6 13. d3 Rb8 14. Ra2 Qc7 {Whittaker,I (2135)-Jones,G (2127) ICCF 2020}) (3. Nc3 Bxf3 4. exf3 e5 5. Ne4 dxe4 6. fxe4 Bxb4 7. Rb1 Qd4 8. Qg4 Nc6 9. c3 Nf6 10. Qf3 Qd6 11. cxb4 Nxb4 12. Qb3 a5 13. a3 Nc6 14. Qa4 O-O {Walker,J (1808)-Dudeney,K (1720) ICCF 2017 0-1 (34)}) (3. d4 c6 4. a3 Nd7 5. e3 e5 6. dxe5 Nxe5 7. Nbd2 Bd6 8. Bb2 Nf6 9. Be2 Qe7 10. O-O Nxf3+ 11. Bxf3 Bxf3 12. Qxf3 Be5 13. Bxe5 Qxe5 14. c4 O-O {Slyusar, V (2287)-Tritt,M (2109) ICCF 2018 1/2}) (3. c4 Bxf3 4. gxf3 e6 5. cxd5 Qxd5 6. Nc3 Qh5 7. Qa4+ c6 8. b5 Bd6 9. Rg1 Ne7 10. Ne4 Qd5 11. e3 Bxh2 12. Rg5 f5 13. Bc4 cxb5 14. Bxd5 bxa4 {Zdziech,M (1938)-Belter,E (1720) ICCF 2020 1-0 (28)}) 3... Nd7 (3... Bxf3 4. exf3 e6 5. b5 Nf6 6. c4 c6 7. cxd5 cxd5 8. d4 Nbd7 9. Bd3 Bd6 10. Nd2 Rc8 11. Rc1 Rxc1 12. Qxc1 O-O 13. O-O Qb8 14. g3 Rc8 15. Qd1 { Braak,J (1945)-Goodwin,B (2020) ICCF 2012 1-0 (58)}) (3... e6 4. h3 Bxf3 5. gxf3 Qh4 6. Be5 Nd7 7. Bg3 Qxb4 8. Nc3 d4 9. Ne4 Qa5 10. Rb1 Be7 11. h4 h6 12. c3 f5 13. cxd4 fxe4 14. fxe4 Ngf6 15. Qc2 {Walker,J (1943)-Vegjeleki,A (2145) ICCF 2008 0-1 (39)}) 4. c4 (4. h3 Bxf3 5. exf3 (5. gxf3 e5 6. a3 a5 7. b5 Bc5 8. Bg2 {1-0 (8) Potter,M-Droualliere,P (2200) ICCF 2014}) 5... Ngf6 (5... e6 6. Qe2 Ngf6 7. Qb5 c5 8. Qxb7 cxb4 9. a3 Qc8 10. Qxc8+ Rxc8 11. Bd3 a5 12. O-O Bd6 13. axb4 axb4 {0-1 (13) Walker,J (1943)-Zylla,J (2267) ICCF 2008}) 6. Bb5 c6 7. Ba4 e5 8. a3 Bd6 9. Nc3 {1-0 (9) Dolejs,D-Edwards,B ICCF 2013}) 4... e6 5. e3 ( 5. cxd5 exd5 6. e3 Ngf6 7. a3 Bd6 8. Be2 c6 (8... O-O 9. Nd4 Bxe2 10. Qxe2 Re8 11. d3 c6 12. Nb3 b6 13. O-O c5 14. bxc5 bxc5 15. h3 Rb8 16. N1d2 d4 17. Nc4 Be5 18. Qc2 dxe3 19. fxe3 Bxb2 20. Qxb2 {Ringsborg,A (2383)-Jensen,C (2376) ICCF 2014 0-1 (69)}) 9. h3 Bxf3 10. Bxf3 O-O 11. O-O Qe7 12. Qc2 a5 13. b5 Ne5 14. Be2 cxb5 15. Bxb5 Rac8 16. Qd1 Ne4 {Fernández Fornés,J (2280)-McDermott,F (2185) ICCF 2017 1/2 (49)}) (5. c5 Bxf3 6. exf3 Ne7 7. f4 b6 8. d4 a5 9. a3 g6 10. b5 Bg7 11. c6 Nf6 12. Nd2 Qd6 13. g3 h5 14. Qf3 h4 15. g4 Ne4 16. Rd1 h3 { Jozefini,L (2015)-Petersons,I (2320) ICCF 2013 0-1 (30)}) 5... Ngf6 6. a3 (6. b5 Bd6 7. d4 c5 8. dxc5 Nxc5 9. Nbd2 e5 10. Qc2 e4 11. Nd4 O-O 12. Rc1 Rc8 13. N4b3 Na4 14. Bd4 Ba3 15. h3 Be6 16. Rd1 dxc4 17. Nxc4 Bb4+ {Zylla,J (2267) -Vegjeleki,A (2145) ICCF 2008 0-1 (25)}) 6... c6 (6... a5 7. b5 (7. c5 c6 (7... e5 8. Be2 e4 9. Ne5 Bxe2 10. Qxe2 Be7 11. f4 c6 12. O-O O-O 13. d4 exd3 14. Qxd3 axb4 15. axb4 Rxa1 16. Bxa1 Nxe5 {Sanjur,C (1814)-Pinzón,N ICCF 2016 1/2 (30)}) 8. d4 axb4 (8... b6 9. Nbd2 Be7 10. Be2 O-O 11. O-O axb4 12. axb4 Rxa1 13. Bxa1 Qc7 14. h3 Bh5 15. Bd3 Ra8 16. Qc2 Bg6 17. Bxg6 hxg6 18. Bc3 Ra6 19. Qb2 b5 20. Ra1 {Blechar,M (2240)-Joseph,P (2108) ICCF 2005 1-0 (51)}) 9. axb4 Rxa1 10. Bxa1 Qa8 11. Bb2 Be7 12. Bd3 O-O 13. O-O Bf5 14. Bxf5 exf5 15. Ne1 g6 16. Nd3 b5 17. Nd2 Qb7 18. Qe2 Ra8 {Avchinikov,V (2303)-Evans,D (2352) ICCF 2017 1/2 (31)}) 7... Bd6 8. d4 (8. cxd5 exd5 9. Be2 O-O 10. h3 Bf5 11. O-O h6 12. Nc3 Qe7 13. d3 Rfc8 14. Na4 Rab8 15. Qd2 c6 16. bxc6 bxc6 17. Bc3 Bxa3 18. Bxa5 Bd6 19. Rfb1 c5 {Muri,H (2410)-Vlasveld,W (2471) ICCF 2008 1/2 (31)}) 8... c5 9. bxc6 (9. cxd5 exd5 10. dxc5 Nxc5 11. Nc3 Bxf3 12. Qxf3 O-O 13. Rd1 Be5 14. Be2 Qd6 15. Qh3 Rac8 16. O-O Rfe8 17. Bf3 Qe6 18. Qxe6 fxe6 19. Be2 Nfd7 20. f4 Bf6 {Andersen,L (2089)-Ottesen,S (2404) ICCF 2007 0-1 (39)}) 9... bxc6 10. Nbd2 Rb8 11. Ra2 Rxb2 12. Rxb2 Bxa3 13. Rb3 Bb4 14. Bd3 e5 15. cxd5 exd4 16. Rxb4 axb4 17. dxc6 Nc5 18. Nb3 {Avchinikov,V (2294)-Jørgensen,B (2324) ICCF 2016 1/2}) 7. h3 (7. d4 Bd6 (7... Be7 8. Nbd2 O-O 9. c5 Qc7 10. Bd3 a5 11. Qc2 axb4 12. axb4 g6 13. Qc3 Bf5 14. Be2 Rxa1+ 15. Bxa1 Ne4 16. Qa3 Rb8 17. O-O Bg4 18. Bd3 f5 19. h3 {Avchinikov,V (2294)-Kovács,A (2319) ICCF 2016 1/2 (29)}) (7... Ne4 8. c5 Qf6 9. Be2 Be7 10. Nbd2 Qg6 11. Nxe4 dxe4 12. Nd2 Bxe2 13. Qxe2 Nf6 14. O-O O-O 15. Nc4 Nd5 16. b5 cxb5 17. Ne5 Qg5 18. Qxb5 b6 19. Rac1 { Stefanov,P (2285)-Dimitrov,D (2272) ICCF 2020 1/2 (31)}) (7... a5 8. b5 Be7 9. Nc3 Rc8 10. c5 O-O 11. b6 Ne4 12. Be2 f5 13. O-O Bf6 14. Rc1 Qe7 15. a4 Bxf3 16. Bxf3 Ng5 17. Nb1 e5 18. Nd2 Nxf3+ 19. Qxf3 {Kural,A (2394)-Biedermann,T (2485) ICCF 2019 1/2 (36)}) 8. Nbd2 Ne4 (8... O-O 9. c5 Bc7 10. Qc2 (10. h3 Bf5 11. Nh4 Ne4 12. Nxf5 exf5 13. Nxe4 fxe4 14. g3 f5 15. Qc2 Qg5 16. Bc1 Qh6 17. b5 Qe6 18. Rb1 cxb5 19. Bxb5 a6 20. Be2 b6 21. cxb6 Bxb6 {Braak,J (1982) -Boreisis,V (2024) ICCF 2018 1-0 (50)}) 10... Bf5 11. Bd3 Bxd3 12. Qxd3 Re8 13. O-O e5 14. dxe5 Nxe5 15. Bxe5 Bxe5 16. Nxe5 Rxe5 17. Nf3 Rh5 18. b5 Ne4 19. bxc6 bxc6 20. Qc2 {Skerlík,S (2234)-Grobler,D (2282) ICCF 2019 1/2 (33)}) 9. Nxe4 (9. Qc2 Nxd2 10. Nxd2 Bf5 11. Bd3 Bxd3 12. Qxd3 O-O 13. O-O Qh4 14. f4 f5 15. c5 Bc7 16. Nf3 Qh5 17. b5 a6 18. bxc6 bxc6 19. Bc3 Nf6 20. Ng5 Qe8 { Avchinikov,V (2303)-Kuhne,D (2391) ICCF 2017 1/2 (37)}) 9... dxe4 10. h3 Bh5 11. g4 Bg6 12. Ne5 Nxe5 13. dxe5 Bc7 (13... Be7 14. Qxd8+ Rxd8 (14... Kxd8 15. h4 h5 16. g5 Kc7 17. Bc3 c5 18. Be2 Bf5 19. bxc5 Bxc5 20. Kf1 g6 21. Kg2 Rhd8 22. a4 a5 23. Rhb1 b6 24. Rb5 Kc6 25. Rc1 Ra7 26. Kh2 {Avchinikov,V (2355) -Muljadi,P (2397) ICCF 2019 1/2 (32)}) 15. h4 h5 16. g5 c5 17. b5 Bf5 18. a4 Bg4 19. Bg2 Bf5 20. a5 O-O 21. a6 b6 22. Bf1 Bg4 23. Be2 Bxe2 24. Kxe2 Kh7 25. f3 {Avchinikov,V (2334)-Junge,W (2383) ICCF 2018 1/2 (30)}) 14. Qxd8+ Rxd8 15. h4 h5 16. g5 Ke7 17. Bd4 Bb6 18. c5 Bc7 {Avchinikov,V (2334)-Schmidt,L (2408) ICCF 2018 1/2 (45)}) (7. Be2 Bd6 8. d3 O-O 9. h3 Bxf3 10. Bxf3 Qe7 11. Nc3 Bc7 12. Qc2 Rfd8 13. cxd5 exd5 14. Nxd5 Nxd5 15. Bxd5 Be5 16. Be4 Bxb2 17. Qxb2 Nf6 18. Qb1 Nxe4 {Gosling,B-Beckett,P (2028) ICCF 2017 1/2 (31)}) 7... Bh5 8. d4 ( 8. cxd5 cxd5 9. g4 Bg6 10. Rg1 Rc8 11. d3 h6 12. Qa4 Be7 13. h4 O-O 14. h5 Bh7 15. g5 hxg5 16. Nxg5 Bf5 17. h6 Ng4 18. hxg7 Re8 19. Nf3 Bf6 {Bjazevic,P (2245) -Vegjeleki,A (2145) ICCF 2008 0-1}) 8... Ne4 (8... Be7 9. c5 O-O 10. Be2 Qc7 11. O-O b6 12. Nbd2 Bg6 13. Nb3 Rfb8 14. Ba6 Bh5 15. Qe2 Ne4 16. Qc2 bxc5 17. dxc5 Bg6 18. Bd3 Re8 19. Nfd2 Nxd2 20. Qxd2 {Avchinikov,V (2367)-Killer,O (2350) ICCF 2019 1/2 (46)}) 9. c5 Be7 10. Be2 f5 11. O-O O-O 12. Nc3 Bf6 13. Nd2 {Avchinikov,V (2367)-Compagnone,G (2350) ICCF 2019 1/2 (41)}) (1... Nc6 2. e3 e5 3. d4 (3. Be2 e4 4. Ng1 d5 5. Kf1 Bd6 6. d4 exd3 7. cxd3 Nf6 8. b3 O-O 9. Bb2 d4 10. e4 Nd7 11. Nf3 Nc5 12. Kg1 Be7 13. h4 a5 14. Na3 a4 {Kazantsev,R (2429)-Rumyantsev,V (2166) ICCF 2018 1-0 (52)}) 3... e4 4. Nfd2 d5 5. c4 Nf6 6. Nc3 Be6 7. cxd5 Bxd5 8. Be2 Be7 9. O-O O-O 10. a3 a5 11. Qc2 Re8 12. b3 Bf8 13. Bc4 {Barclay,A (1913)-Nielsen,J (1998) ICCF 2014 1-0 (28)}) (1... e5 2. e3 d5 ( 2... e4 3. Ng1 Qg5 4. Ke2 d5 5. d3 Bd6 6. Nc3 Nf6 7. Nb5 O-O 8. Nxd6 cxd6 9. h3 Nc6 10. d4 Bd7 11. Ke1 Rfc8 12. Bd2 Ne7 13. Ne2 Bb5 14. Nf4 {Poleshchuk,N (2482)-Pirogov,A ICCF 2018 0-1 (53)}) 3. Nxe5 Qg5 4. Bb5+ c6 5. O-O Qxe5 6. d4 Qc7 7. Bd3 Bd6 8. h3 Kf8 9. Re1 Be6 10. Nd2 Nf6 11. c4 dxc4 12. Bxc4 Bxc4 13. Nxc4 {Rumyantsev,V (2134)-Matyukhin,S (2504) ICCF 2017 0-1 (29)}) 2. b4 d5 ( 2... e6 3. a3 (3. b5 a6 (3... d5 4. Bb2 Be7 (4... Bd6 5. c4 (5. e3 O-O 6. Be2 Nbd7 (6... a6 7. a4 axb5 (7... Nbd7 8. O-O e5 9. d4 e4 10. Nfd2 axb5 11. axb5 Rxa1 12. Bxa1 Nb6 13. c4 dxc4 14. Qc2 Bf5 15. Nc3 Re8 16. Nxc4 Nxc4 17. Bxc4 Ng4 18. g3 Qg5 {Marshall,I (2137)-Hoffmann,F (2303) ICCF 2016 0-1 (53)}) 8. axb5 Rxa1 9. Bxa1 Nbd7 (9... Qe7 10. d4 Nbd7 11. O-O e5 12. dxe5 Nxe5 13. Nxe5 Bxe5 14. Nd2 Bf5 15. Bxe5 Qxe5 16. Qa1 Qd6 17. Qa7 b6 18. Rd1 Re8 19. Bd3 Bxd3 20. cxd3 {Welti,M (1931)-Torgersen,T (1986) ICCF 2008 1/2 (40)}) 10. O-O e5 11. d3 Re8 (11... Qe7 12. Nfd2 Nb6 13. c4 dxc4 14. d4 exd4 15. Bxd4 Rd8 16. Qc2 Bxh2+ 17. Kxh2 Rxd4 18. exd4 Qxe2 19. Nc3 Qg4 20. Nf3 Bf5 21. Qe2 {Giachè, G-Vegjeleki,A (2313) ICCF 2006 0-1}) 12. Nbd2 Qe7 13. e4 dxe4 14. dxe4 Nc5 15. Re1 Rd8 16. Qb1 Be6 17. Bd3 Nfd7 {Fernández Fornés,J (2297)-Rihtaric,I (2071) ICCF 2010 1/2 (56)}) 7. O-O (7. c4 b6 8. O-O (8. cxd5 Nxd5 9. Nc3 Bb7 10. Nxd5 Bxd5 11. O-O Nc5 12. Qc2 Rc8 13. Nd4 c6 14. bxc6 e5 15. Nb5 Bb8 16. c7 Bxc7 17. Nxc7 Qxc7 {Kappel,R (1940)-Keller,T (1984) ICCF 2010 1/2}) 8... Bb7 9. cxd5 Bxd5 10. d3 Bb7 11. Nbd2 Be7 12. Nd4 Bd6 13. Nc4 Nc5 14. Nc6 {1-0 (14) Kural,A (2001)-Azzoug,S (1672) ICCF 2007}) (7. d4 c5 8. Nbd2 c4 9. a4 a6 10. Bc3 axb5 11. axb5 Nb6 12. Rxa8 Nxa8 13. O-O Bd7 14. e4 Nxe4 15. Nxe4 dxe4 16. Nd2 Nc7 17. Ba5 Bxb5 18. Nxe4 Bc6 {Rashleigh,J-Lewyk,I (2006) ICCF 2012 0-1 (34)}) 7... a6 8. Nc3 e5 9. d4 c6 10. a4 e4 11. Nh4 Nb6 12. a5 Nc4 13. Bxc4 Bxh2+ 14. Kxh2 Ng4+ 15. Kg3 g5 16. Nf5 Bxf5 {Yeung,C (1642)-Daatselaar,J (2074) ICCF 2008 0-1} ) (5. d3 a6 6. a4 c6 7. Nbd2 axb5 8. e4 Be7 9. axb5 Rxa1 10. Qxa1 cxb5 11. e5 Nfd7 12. d4 b4 13. Be2 Nc6 14. O-O Qa5 15. Qxa5 Nxa5 16. Ra1 {Kögeler,A (2185) -Leijen,P (2158) ICCF 2020 (49)}) 5... O-O 6. e3 Nbd7 (6... c6 7. cxd5 (7. a4 a6 8. Nc3 e5 9. cxd5 cxd5 10. Be2 a5 11. O-O Nbd7 12. Ba3 Nb6 13. d4 e4 14. Nd2 Bxa3 15. Rxa3 Ne8 (15... Be6 16. Nb3 Ne8 {Ilzig,G (2264)-Rumyantsev,V (2116) ICCF 2017 1/2 (32)}) 16. Ra2 Qg5 17. Kh1 f5 18. Qb3 Be6 {Fernández Fornés,J (2244)-Shuler,J (2230) ICCF 2016 0-1 (43)}) 7... exd5 8. Nc3 Bf5 9. Be2 a6 10. a4 Qc7 11. O-O (11. Rc1 Nbd7 12. O-O Rfc8 13. Nd4 Bg6 14. f4 h6 15. Bf3 Qd8 16. d3 axb5 17. axb5 c5 18. Nc2 Nb6 19. f5 Bh7 {Cottarelli,F (2070)-Leimgruber,R (2057) ICCF 2008 0-1 (34)}) 11... Nbd7 12. d4 axb5 13. axb5 h6 14. Qb3 Be6 15. Rfc1 Rxa1 16. Rxa1 c5 17. dxc5 Nxc5 {1/2 (17) Gavrijski,D (2143)-Daatselaar,J (2177) ICCF 2009}) 7. Nc3 (7. d4 c5 8. bxc6 bxc6 9. c5 Bc7 10. Be2 Rb8 11. Qc2 e5 12. dxe5 Ng4 13. Nbd2 Ndxe5 14. h3 Nxf3+ 15. Nxf3 Ba5+ 16. Kf1 Nf6 17. Be5 Bc7 18. Bxc7 Qxc7 {Whittaker,I (2085)-Pallett,R (2106) ICCF 2019 1-0 (57)}) (7. cxd5 exd5 8. Qc2 Re8 9. Be2 Ne5 10. Bxe5 Bxe5 11. Nxe5 Rxe5 12. O-O Bf5 13. Qc5 b6 14. Qd4 Re4 15. Qb2 Qd6 {Degterev,P (2545)-Del Vecchio,A (2522) ICCF 2007 1-0 (67)}) 7... Nb6 8. cxd5 exd5 9. Be2 (9. Qc2 Re8 10. Rb1 Bg4 11. Be2 Qd7 12. O-O Qf5 13. Qxf5 Bxf5 14. d3 h6 15. Nd4 Bh7 16. Rfd1 Rac8 17. Ba1 c6 18. bxc6 bxc6 19. g3 c5 20. Nf3 Rc6 {Malushko,N (2184)-Cunha,E (2217) ICCF 2013 1-0 (78) }) 9... c5 10. bxc6 bxc6 11. Qc2 Rb8 12. O-O Re8 13. Rab1 Bg4 14. h3 Bxf3 15. Bxf3 Nc4 16. d3 {Braak,J (1974)-Bieker,P (1988) ICCF 2014 1/2 (28)}) (4... a6 5. a4 (5. e3 axb5 6. Bxb5+ c6 7. Be2 Bd6 8. Nc3 e5 9. O-O O-O 10. a4 Qc7 11. h3 Bf5 12. g4 Be4 13. g5 Bxf3 14. gxf6 Bxe2 15. Qxe2 gxf6 {Domenche Redondo,F (1776)-Lucena Cifré,R (1694) ICCF 2015 1-0}) 5... Bd6 (5... axb5 6. axb5 Rxa1 7. Bxa1 c6 (7... Be7 8. e3 Nbd7 9. Be2 O-O 10. O-O Nc5 (10... c5 11. c4 b6 ( 11... Qc7 12. d3 b6 13. Nbd2 Bb7 14. Qb3 Ra8 15. Bc3 Ne8 16. Ra1 Rxa1+ 17. Bxa1 {1-0 (17) Hatipoglu,M (1975)-Kuz'ko,M ICCF 2011}) 12. cxd5 exd5 13. d4 c4 14. Nc3 Qc7 15. Qc2 Bb7 16. Nh4 Ne4 17. Nxe4 Bxh4 18. Nc3 Be7 19. Bb2 {Jäger, E-Castilho,M ICCF 2007 1/2 (29)}) 11. d3 Bd7 12. c4 dxc4 13. dxc4 c6 14. Bd4 cxb5 15. cxb5 Nd5 16. Nc3 Nxc3 17. Bxc3 Qc7 18. Be5 Qb6 19. Bd4 {Sartain, K-Graham,O (1938) ICCF 2013 0-1 (36)}) (7... c5 8. c4 Nbd7 9. e3 (9. d3 d4 ( 9... Bd6 10. g3 b6 11. Bg2 O-O 12. O-O Bb7 13. cxd5 exd5 14. d4 c4 15. Nfd2 Qc7 16. Qc2 Re8 17. e3 Nf8 18. Nc3 Ne6 19. Rc1 Ra8 20. Qf5 Bb4 21. Qc2 { Wantoch-Rekowski,J (2246)-Rocco Ruiz,J (2200) ICCF 2008 0-1 (69)}) 10. g3 e5 11. Nbd2 Bd6 12. Bg2 O-O 13. O-O Ne8 14. Bb2 f5 15. Re1 Qf6 16. e3 g5 17. exd4 exd4 18. Nb3 f4 {Degterev,P (2530)-Balcazar Novoa,L (2335) ICCF 2007 1-0}) 9... b6 (9... Bd6 10. Nc3 b6 11. Be2 Bb7 12. O-O O-O 13. Bb2 Qc7 14. h3 Rd8 15. d4 cxd4 16. exd4 dxc4 17. Qc2 Nd5 18. Nd2 Nf4 19. Bf3 Bxf3 20. Nxf3 Nd3 21. Ne4 { Flewelling,H-Kleine,L (1995) ICCF 2012 1-0 (40)}) 10. d3 (10. Nc3 Bb7 11. cxd5 exd5 12. d4 c4 13. Be2 Bd6 14. Qc2 O-O 15. O-O Qc7 16. Rc1 Ra8 17. Bb2 h6 18. Bd1 Bb4 19. Nd2 Nf8 20. Ra1 Rxa1 21. Bxa1 Ba5 22. Qa4 Ne6 23. Nf3 Qe7 24. Ne5 Nc7 25. h3 Qe8 26. Bc2 Nd7 27. Ng4 f6 28. Nh2 Nb8 29. Nf3 Bxc3 30. Bxc3 Nxb5 31. Bb4 Bc6 32. Qa1 g5 33. Qb2 Na6 34. Bd2 Qe7 35. Ba4 Nac7 36. Nh2 Be8 37. Bb4 Qe6 38. Nf1 h5 39. Ng3 h4 40. Ne2 Kg7 41. Bd2 Qc8 42. Qb1 Kg8 43. Qb2 Qa8 44. Qb4 Qd8 45. Bxb5 Nxb5 46. e4 Qd6 47. Qxd6 Nxd6 48. exd5 Kf7 49. f3 Ke7 50. Bb4 Bf7 51. Nc3 Kd7 52. Ne4 Ne8 53. Nc3 Nc7 54. d6 Nd5 55. Nxd5 Bxd5 56. Kf2 f5 57. Ke2 b5 58. Kd2 Bb7 59. Ke3 Ke6 60. Ke2 Bc6 {1/2 (60) Morley,P (2277)-Fourie,M (2376) ICCF 2008 Irregular Openings}) (10. d4 Bb7 11. Nbd2 Bd6 12. Be2 O-O 13. O-O cxd4 14. exd4 (14. Nxd4 Qc7 15. h3 e5 16. Nf5 Bb4 17. f4 exf4 18. Rxf4 Re8 19. cxd5 Nxd5 20. Rg4 g6 21. Nc4 Bc5 22. Bf3 N7f6 23. Rg5 Nxe3 24. Nfxe3 Rxe3 25. Rxc5 Qxc5 {Krüger,J-Gavrijski,D (2010) ICCF 2006 0-1 (49)}) 14... Qc7 15. Qb3 Ra8 16. Bb2 Ne4 17. g3 h6 18. Nxe4 dxe4 19. Nd2 e5 20. dxe5 Bxe5 21. Bxe5 Qxe5 {Frydendal,O (1839)-Ormsby,A (2007) ICCF 2010 1/2 (36)}) 10... Bb7 11. Nbd2 Bd6 12. Be2 O-O 13. O-O Qc7 (13... Qe7 14. Bb2 Ra8 15. Qc2 e5 16. e4 dxe4 17. dxe4 Nf8 18. Bd3 Qc7 19. Ra1 Rxa1+ 20. Bxa1 {Ramos Mora,J (1964)-Juárez de Vena,A (1960) ICCF 2013 1/2 (32)}) 14. Qc2 (14. h3 Ra8 15. Qb3 (15. Bb2 Ne5 16. Qc2 h6 17. Ra1 Rxa1+ 18. Bxa1 Nxf3+ 19. Bxf3 Be5 20. Qa4 Bxa1 21. Qxa1 dxc4 22. Bxb7 Qxb7 23. Nxc4 Qd5 24. Qb1 Qd8 25. Qb3 Nd5 26. Kf1 Qc7 {Jiménez Ariza, J-Juárez de Vena,A (1913) ICCF 2011 1-0 (65)}) 15... Be7 16. Bc3 Ne8 17. Ra1 Rxa1+ 18. Bxa1 h6 19. Qa2 Bf6 20. Bxf6 Ndxf6 21. d4 Nd6 22. Qa4 Nfe4 23. Nxe4 Nxe4 24. Bd3 dxc4 25. Bxe4 {Zhuravlev,K (2179)-Brzoza,M (2295) ICCF 2015 1/2 (39)}) 14... Ra8 15. Bb2 Qb8 16. h3 {Skerlík,S (2332)-Cvetnic,V (2379) ICCF 2008 1/2}) 8. e3 Be7 9. Ne5 Qc7 10. f4 Nbd7 11. bxc6 bxc6 12. c4 O-O 13. Be2 Bd6 14. Nxd7 Nxd7 15. Qc2 Bb7 16. O-O f6 17. Bd3 {Stadchenko,I-Öden,M ICCF 2012 1-0 (29)}) 6. e3 Nbd7 (6... O-O 7. c4 axb5 (7... Qe7 8. d4 (8. Nc3 Nbd7 9. Be2 dxc4 10. Qc2 Nb6 11. a5 Nbd5 12. Bxc4 axb5 13. Nxd5 exd5 14. Bxb5 c6 15. Be2 c5 16. O-O Rd8 17. Rfb1 h6 18. h3 Ra7 19. Bb5 {Destruels Moreno,V (2368) -Tarrío Ocaña,F (2350) ICCF 2013 1/2 (98)}) 8... Bb4+ 9. Nc3 Ne4 10. Qc2 Bd7 11. Be2 axb5 12. axb5 Rxa1+ 13. Bxa1 Nd6 14. Qb3 Nxc4 15. Bxc4 dxc4 16. Qxc4 c6 17. bxc6 Nxc6 18. O-O Rc8 19. Qd3 {Whittaker,I (2085)-Visigalli,C (2112) ICCF 2019 1/2 (29)}) 8. axb5 (8. cxb5 Nbd7 9. d4 c5 10. Be2 Qa5+ 11. Bc3 Qc7 12. O-O Ne4 13. Qb3 Nxc3 14. Nxc3 b6 15. Rfd1 c4 16. Qb2 Nf6 17. h3 h6 18. Ne1 Bb7 19. Nc2 {Ramos Mora,J (1792)-Hernáez Fernández,C (2208) ICCF 2018 0-1 (36)}) 8... Rxa1 9. Bxa1 Nbd7 10. Nc3 (10. Qc2 b6 11. Bd3 (11. Nc3 Bb7 12. Bb2 Qa8 13. cxd5 Nxd5 14. Be2 Nb4 15. Qb1 f5 16. O-O Rf6 17. Qa1 Qd8 18. g3 Nd3 {Böhnke,H (2089) -Lagergren,H (1961) ICCF 2009 1-0 (47)}) (11. Be2 dxc4 12. Qxc4 Bb7 13. O-O Qe7 14. Nc3 Ra8 15. Bb2 Qe8 16. Ra1 Rxa1+ 17. Bxa1 e5 18. d3 Qa8 19. Bb2 h6 20. e4 Nf8 21. g3 Ng6 {Schmidt,K (2125)-Santos Etxepare,A (2282) ICCF 2010 1/2}) 11... dxc4 12. Bxc4 Bb7 13. Bb2 Ne4 14. d3 Bb4+ 15. Ke2 Nd6 16. Bxg7 Kxg7 17. Qb2+ Kh6 18. Qxb4 Rg8 19. Nbd2 Rxg2 20. Qc3 Nc5 21. Qd4 f6 {Fua,N (2017)-Toledo,R ICCF 2010 0-1 (42)}) (10. cxd5 Nxd5 (10... exd5 11. Be2 Nc5 12. Qc2 Bg4 13. O-O h6 14. Rc1 Bh5 15. Be5 Bxf3 16. Bxd6 Qxd6 17. Bxf3 Ne6 18. d4 Ra8 19. Nc3 Ng5 20. Be2 g6 21. h4 Ne6 {Fagerbekk,E (2189)-Senzacqua,F (2116) ICCF 2013 1/2 (40) }) 11. Nc3 (11. Be2 e5 12. d3 (12. Nc3 Nxc3 13. Bxc3 e4 14. Nd4 Qg5 15. O-O Nf6 16. f3 Qh6 17. f4 g5 18. Qe1 gxf4 19. exf4 Nd5 20. Qg3+ Qg6 21. Bb2 Rd8 22. Nb3 Qxg3 23. hxg3 Be6 {Kural,A (2001)-Sánchez Ortega,R ICCF 2007 1/2 (26)}) 12... Qe7 (12... N7b6 13. O-O Qe7 14. Nbd2 Bd7 15. Qb1 Ra8 16. Nc4 f6 17. Nxd6 Qxd6 18. g3 Bg4 19. e4 Nb4 20. d4 {1/2 (20) Barendswaard,W (2111)-Kögeler,A (2185) ICCF 2020}) 13. Nbd2 f6 14. O-O N7b6 15. Qc2 Re8 16. Ne4 Bb4 17. Nc3 Be6 18. d4 e4 19. Nd2 f5 20. Nxd5 Nxd5 21. Nc4 Ra8 22. Bb2 {Kural,A (2330)-Gabriel,B (2240) ICCF 2011 1/2 (40)}) 11... Nxc3 12. Bxc3 e5 13. Qc2 Re8 14. Be2 e4 15. Nd4 Nc5 16. O-O Qg5 17. f4 exf3 18. Nxf3 Qh5 19. Bb4 {Semenov,V (2250)-Silin,V (2234) ICCF 2010 1/2 (38)}) (10. Be2 dxc4 11. Bxc4 (11. Qc2 Qe7 12. Qxc4 e5 13. Nc3 Nc5 14. Bb2 Be6 15. Qh4 e4 16. Nd4 Bd7 17. O-O Ra8 18. f4 exf3 19. Bxf3 h6 20. Nde2 Re8 21. Qc4 Be6 22. Nd5 Nxd5 {Böhnke,H (2089)-Ruhmke,S ICCF 2009 1/2 (32)}) 11... Qe7 (11... e5 12. O-O e4 13. Ne1 Re8 14. h3 Ne5 15. Bxe5 Rxe5 16. Qc2 Rg5 17. f4 Rg6 18. Kh2 Nh5 19. Rf2 Bxh3 20. Qxe4 Be6 21. Bd3 Qh4+ {0-1 (21) Smith,A (1668)-Lawrence,S (1876) ICCF 2015}) 12. O-O e5 13. d3 Nb6 14. Nbd2 h6 15. Qc2 Bd7 16. Rd1 Ra8 17. h3 Nfd5 18. Bb2 Nxc4 19. dxc4 Nf6 20. Nf1 b6 21. e4 Bc8 {Frydendal,O (1839)-Halliwell,T ICCF 2010 1/2 (30)}) (10. d4 c5 11. bxc6 bxc6 12. Be2 Bb4+ 13. Nbd2 Ne4 14. O-O Qa5 15. Nxe4 dxe4 16. Ne5 Nxe5 17. dxe5 Rd8 18. Qb1 Rd2 19. Bd1 Ba6 20. Bb3 Rd3 21. Rc1 h6 {Kokorin,V (2325)-Sgherri,M (2163) ICCF 2011 0-1 (72)}) 10... Nb6 (10... dxc4 11. Bxc4 Nb6 12. Bb3 Qe7 13. d3 Bd7 14. O-O Ra8 15. Qc2 Qe8 16. Rb1 h6 17. Nd2 e5 18. Bb2 Ra5 19. Nc4 Nxc4 { Wantoch-Rekowski,J (2245)-Kraujûnas,V (1990) ICCF 2008 1/2 (76)}) (10... Re8 11. Qc2 h6 12. cxd5 exd5 13. Be2 Nc5 14. O-O Qe7 15. Bb2 Bg4 16. Ra1 { Cottarelli,F (2070)-Santos Etxepare,A (1968) ICCF 2008 1/2 (52)}) 11. d3 dxc4 12. dxc4 e5 13. e4 Be6 14. c5 Bxc5 15. Qxd8 Rxd8 16. Nxe5 Ra8 17. Bb2 Bd4 18. Nf3 {Schulz,B (1920)-Flecher,J (1927) ICCF 2013 0-1 (28)}) 7. c4 O-O (7... axb5 8. cxd5 exd5 9. axb5 Rxa1 10. Bxa1 c6 11. bxc6 bxc6 12. Be2 O-O 13. Qc2 Qb6 14. O-O Ba6 15. Bxa6 Qxa6 16. Bxf6 {Jiménez Ariza,J (2398)-Ribés Colom,J (2235) ICCF 2017 1/2 (30)}) 8. Nc3 (8. d4 c5 9. bxc6 bxc6 10. c5 Bc7 11. Be2 Rb8 12. Qc2 e5 13. dxe5 Ng4 14. O-O Ndxe5 15. Bxe5 Bxe5 16. Nxe5 Nxe5 17. Nd2 { Zhuravlev,K-Zemlyanov,S (1921) ICCF 2010 1/2 (29)}) (8. cxd5 exd5 9. Qc2 Re8 10. Be2 Ne5 11. Nxe5 Bxe5 12. Bxe5 Rxe5 13. bxa6 d4 14. Qb2 b6 15. Qxd4 Qxd4 16. exd4 Re7 17. Kd1 Bxa6 18. Bxa6 {Schmidt,K (2119)-Deneuville,C (2229) ICCF 2018 1/2}) (8. Qc2 e5 9. d4 Bb4+ 10. Nfd2 exd4 11. Bxd4 axb5 12. axb5 Rxa1 13. Bxa1 Nb6 14. Be2 Nxc4 15. Bxc4 dxc4 16. Qxc4 Qd6 17. O-O Bxd2 18. Bxf6 gxf6 19. Rd1 Be6 {Wolf,W (2303)-Andersen,J (2303) ICCF 2016 1/2 (49)}) 8... Nb6 9. cxd5 exd5 10. Be2 (10. Qb3 c5 11. bxc6 bxc6 12. Ba3 Rb8 13. Bxd6 Qxd6 14. Qa3 Qxa3 15. Rxa3 c5 16. a5 Nc4 17. Bxc4 dxc4 18. Ke2 Rb4 19. Rc1 Re8 20. Raa1 Bb7 21. Ne1 Nd7 {Hering,H (2242)-Lushnikov,A (2261) ICCF 2015 1/2 (33)}) 10... Nc4 11. Bxc4 dxc4 12. Qe2 Be6 13. Nd4 Qe7 14. O-O Rfe8 15. Nxe6 Qxe6 16. f4 {Ladeira, P-Hager,R ICCF 2013 0-1}) (4... Nbd7 5. e3 Be7 (5... c6 6. a4 Bd6 7. c4 O-O 8. d4 c5 9. Be2 b6 10. Nbd2 Qc7 11. Rc1 e5 12. cxd5 e4 13. Ng5 Re8 14. Qc2 Bb7 15. Ndxe4 Bxd5 16. Bf3 Bxe4 17. Nxe4 {Whittaker,I-Gilbert,R (1788) ICCF 2018 1-0 (34)}) 6. c4 O-O 7. Be2 (7. Nc3 b6 8. cxd5 exd5 9. d4 Bb7 10. Be2 Ne4 11. O-O Nxc3 12. Bxc3 Nf6 13. Qb3 Ne4 14. Rfc1 Bd6 15. Bb4 Rc8 16. Bxd6 {Wilshusen,H (1806)-Turner,L (1824) ICCF 2010 1-0 (34)}) 7... a6 (7... b6 8. O-O dxc4 9. Bxc4 Bb7 10. d3 Ng4 11. h3 Nh6 12. e4 Bf6 13. Bxf6 Qxf6 14. Nbd2 Ne5 15. Nxe5 Qxe5 16. Nf3 {Hasler,U (1683)-MacMillen,A (1833) ICCF 2005 0-1 (49)}) 8. a4 axb5 9. axb5 Rxa1 10. Bxa1 dxc4 11. Bxc4 Nb6 12. Be2 Bd7 (12... Nfd5 13. Qb3 Bd7 14. O-O Bd6 15. Nc3 Qe7 16. Bb2 Ra8 17. Nxd5 exd5 18. Ra1 Qe8 19. Rxa8 { Frydendal,O (1913)-Kinchant,K (2011) ICCF 2009 1/2}) 13. O-O Nfd5 14. Nc3 Bf6 15. Qc2 Nxc3 16. Bxc3 {Braak,J (1969)-Jugaru,L (1949) ICCF 2013 1/2 (50)}) ( 4... g6 5. e3 Nbd7 6. c4 Bg7 7. Nc3 O-O 8. Be2 a6 9. a4 axb5 10. axb5 Rxa1 11. Qxa1 dxc4 12. Bxc4 Ne5 13. Nxe5 Nd5 14. Nxd5 exd5 15. Be2 Be6 16. O-O { Whittaker,I-Tanner,A (1675) ICCF 2018 1-0}) (4... Bd7 5. a4 c5 6. c4 a6 7. d3 dxc4 8. dxc4 axb5 9. axb5 Rxa1 10. Bxa1 Be7 11. g3 O-O 12. Bg2 Bc8 13. O-O Ne4 14. Qc2 f5 15. Nc3 Nd6 16. Rd1 {Recasens Sánchez,J (2124)-Vivas Font,P (1814) ICCF 2008 1-0}) (4... Bc5 5. Nc3 c6 6. e3 Nbd7 7. Be2 Qc7 8. O-O O-O 9. h3 e5 10. d4 Bd6 11. bxc6 bxc6 12. dxe5 Nxe5 13. Nd4 a5 14. f4 Ng6 15. Rb1 Re8 16. Qd2 {Domenche Redondo,F (1800)-Lucena Cifré,R (1714) ICCF 2015 1-0 (27)}) 5. e3 O-O 6. a4 (6. c4 dxc4 (6... c5 7. Be2 a6 (7... Nbd7 8. O-O b6 9. a4 Bb7 10. d3 (10. cxd5 exd5 11. d4 Re8 12. Nc3 Bd6 13. Qd3 Ne4 14. Rfd1 Rc8 15. Rac1 Ndf6 16. Qb1 Qe7 17. Nxe4 Nxe4 18. dxc5 bxc5 19. Bd3 f5 20. Ba3 f4 21. exf4 Bxf4 { Kural,A (2001)-Zivkovic,M (2171) ICCF 2007 1/2 (43)}) 10... dxc4 (10... Qc7 11. Nbd2 a6 (11... a5 12. Rc1 Rac8 13. Rc2 Bd6 14. Qa1 Rfe8 15. h3 h6 16. Rd1 Rcd8 17. d4 e5 18. cxd5 Nxd5 19. dxe5 Nxe5 20. Nc4 Nb4 21. Rcd2 Nxf3+ 22. Bxf3 Bxf3 23. gxf3 {Fernández Fornés,J (2301)-Esteban,F (2352) ICCF 2008 1-0 (55)}) 12. Qc2 h6 13. Rfc1 Rfc8 14. h3 Ne8 15. Nf1 {Ilzig,G-Chomicki,H (1995) ICCF 2016 1/ 2 (60)}) 11. dxc4 Qc7 12. Nc3 Rad8 13. Qc2 Ne8 14. a5 Nd6 15. axb6 axb6 16. Rfd1 Ra8 17. Rxa8 Rxa8 18. e4 h6 19. e5 {Welti,M (1931)-Vieito Ribelles,A (1944) ICCF 2008 0-1 (56)}) 8. a4 axb5 9. axb5 Rxa1 10. Bxa1 Nbd7 11. d3 b6 12. Nbd2 Bb7 13. Qc2 Qc7 14. O-O h6 15. Bc3 Ra8 16. Qb2 Ne8 17. Ne5 Nxe5 18. Bxe5 { Ilzig,G (2264)-Lawson,A ICCF 2017 1/2}) 7. Bxc4 Nbd7 8. O-O Nb6 9. Be2 Bd7 10. a4 Nc8 11. Nc3 c6 12. e4 cxb5 13. axb5 Nb6 14. Qb1 Ng4 15. h3 Ne5 16. Nxe5 Be8 17. d4 f6 {Whittaker,I (2085)-MacMillen,A (1529) ICCF 2019 1-0}) (6. Be2 c5 ( 6... c6 7. O-O cxb5 8. a3 Bd7 9. Nc3 b4 10. axb4 Bxb4 11. h3 Nc6 12. d4 Bxc3 13. Bxc3 a6 14. Ne5 Nxe5 15. dxe5 Ne4 16. Bb4 Re8 17. c4 Qg5 {Neumann,F (1522) -de Wit,W (1582) ICCF 2020 0-1 (38)}) 7. O-O Bd7 (7... Qc7 8. c4 Nbd7 9. a4 a5 10. d3 b6 11. Nbd2 Bb7 12. Qc2 dxc4 13. Nxc4 Rad8 14. Nfe5 Nxe5 15. Bxe5 Qd7 16. Nxb6 Qe8 17. Bc7 {Flewelling,H (1843)-Kelly,G (1845) ICCF 2015 1-0 (30)}) 8. a4 Qc7 9. Ne5 Be8 10. f4 Nbd7 11. d3 c4 12. dxc4 Nc5 13. cxd5 exd5 14. Nd2 Rc8 15. Ndf3 Nce4 16. Bd3 Bc5 17. Qe2 b6 {Silfver,T (1730)-Acacio,A (1681) ICCF 2015 1-0 (41)}) 6... c6 7. c4 Nbd7 (7... dxc4 8. Bxc4 cxb5 9. axb5 b6 10. Qc2 Bb7 11. Ng5 h6 12. Bxf6 hxg5 13. Bxe7 Qxe7 14. O-O Nd7 15. Nc3 Rfc8 16. d3 Ne5 17. Bb3 Qb4 18. Rfc1 Nxd3 19. Qxd3 {Thomsen,J (1587)-Cook,P (1623) ICCF 2014 0-1}) 8. Be2 Re8 9. O-O dxc4 10. Na3 h6 11. Nxc4 Nd5 12. Nfe5 Nxe5 13. Nxe5 Bf6 14. Qb3 Qd6 15. f4 {Whittaker,I (2085)-Clark,M (1625) ICCF 2019 1-0}) 4. c4 (4. bxa6 Nxa6 5. e3 b6 6. d4 Bb7 7. Bb2 Ne4 8. Be2 Bb4+ 9. c3 Be7 10. Nbd2 O-O 11. Nxe4 Bxe4 12. O-O Nb8 13. c4 d6 14. a4 Bf6 15. Nd2 Bb7 {Jozefini, L (2036)-Wilshusen,H (1359) ICCF 2019 1-0 (32)}) 4... axb5 (4... d5 5. e3 Be7 6. Bb2 O-O 7. a4 Nbd7 (7... axb5 8. axb5 Rxa1 9. Bxa1 Qd6 10. d4 b6 11. cxd5 exd5 12. Bd3 c5 13. dxc5 bxc5 14. O-O Bb7 15. Qa4 Nbd7 16. Nbd2 Qe6 17. Rd1 { Wantoch-Rekowski,J (2305)-Grochowski,M (2231) ICCF 2006 1/2 (41)}) 8. d4 axb5 9. axb5 Rxa1 10. Bxa1 c5 11. bxc6 bxc6 12. Nbd2 Qa5 13. Bd3 dxc4 14. Bxc4 Nb6 15. Be2 Ba6 16. O-O {Whittaker,I (2085)-Wiesinger,J (2091) ICCF 2019 1/2 (33)}) 5. cxb5 d5 (5... Be7 6. Bb2 c5 7. a4 d5 8. d3 Qc7 9. Nbd2 b6 10. g3 O-O 11. Bg2 Bb7 12. O-O h6 13. Re1 {Whittaker,I (2135)-Cross,G (2123) ICCF 2020}) 6. Bb2 Bd6 (6... Nbd7 7. a4 (7. e3 c5 8. a4 c4 9. d3 Bb4+ 10. Bc3 Bxc3+ 11. Nxc3 Qa5 12. Qc2 Nc5 13. dxc4 Nfe4 14. Rc1 Bd7 15. Ne5 f6 16. Nxd7 Kxd7 17. f3 Qxc3+ 18. Qxc3 Nxc3 {Whittaker,I (2083)-Sneddon,I (2281) ICCF 2020 1/2 (48)}) 7... Be7 8. g3 O-O {Whittaker,I (2135)-Clark,S (1975) ICCF 2020}) 7. e3 O-O (7... c5 8. Be2 c4 9. O-O Nbd7 10. d3 cxd3 11. Qxd3 Nc5 12. Qc2 O-O 13. a4 b6 14. Rc1 Bb7 15. Nbd2 Nfd7 (15... Qb8 16. Bxf6 gxf6 17. Nf1 Kh8 18. Ng3 Rg8 19. Nd4 Qf8 20. Nh5 Qh6 21. g3 {1/2 (21) Whittaker,I (2085)-Lundberg,K (2112) ICCF 2019}) 16. Qd1 Qe7 17. Bc3 e5 18. a5 bxa5 19. Rxa5 {Whittaker,I (2085)-Marchant,A (2101) ICCF 2019 1/2 (36)}) 8. Be2 Nbd7 9. O-O e5 10. d3 Re8 11. Nbd2 Qe7 12. Qc2 c5 13. e4 b6 14. Rfe1 Bb7 {Whittaker,I (2085)-Burridge,R (1949) ICCF 2019 1/2 (27)}) 3... d5 (3... Be7 4. e3 (4. Bb2 O-O 5. e3 a5 6. b5 b6 7. Be2 Bb7 8. c4 d5 9. d4 Nbd7 10. O-O c6 11. bxc6 Bxc6 12. Nc3 Rc8 13. cxd5 Bxd5 14. Nxd5 exd5 15. Qb3 Qc7 { Vegjeleki,A (2145)-Haznedaroglu,K (2293) ICCF 2008 1-0}) 4... d5 (4... O-O 5. c4 b6 6. Bd3 Bb7 7. O-O d5 8. Nc3 c5 9. Ne5 cxb4 10. axb4 Bxb4 11. Bb2 Nbd7 12. Nxd7 Qxd7 13. h3 dxc4 14. Bxc4 Qc6 15. Qe2 Qxg2# {0-1 (15) Kissick,P (1548) -Anonymous,R ICCF 2006}) 5. c4 c6 6. Bb2 b6 (6... O-O 7. Nc3 (7. d4 a5 8. b5 a4 9. Nc3 Qa5 10. Qd2 dxc4 11. Bxc4 cxb5 12. Bxb5 Ne4 13. Qd3 Nd6 14. Bxa4 b6 15. Bc2 g6 16. Qe2 {Kolek,P (2231)-Åberg,L (2078) ICCF 2015 1/2 (43)}) (7. Be2 Nbd7 8. O-O Qc7 9. Nc3 b6 10. Qc2 Bb7 11. Nd1 Bd6 12. h3 Rac8 13. Rc1 Ne5 14. c5 Nxf3+ 15. Bxf3 bxc5 16. bxc5 Be7 17. Be2 Ne4 {Thomsen,J (1612)-McGahee,B (1612) ICCF 2014 1/2 (28)}) 7... Nbd7 (7... b6 8. d4 Bb7 9. c5 b5 10. a4 a6 11. axb5 axb5 12. Rxa8 Bxa8 13. Bd3 Nbd7 14. Qc2 g6 15. Ne2 Kg7 16. h3 Rh8 17. Ng3 Bb7 18. Ne5 Nxe5 19. dxe5 {Wilshusen,H (1393)-Velez Arana,J (1610) ICCF 2019 1-0 (61)}) 8. d4 h6 (8... b6 9. cxd5 cxd5 10. Bd3 Bb7 {Degterev,P (2419)-Glanville, C (2116) ICCF 2013}) 9. Qc2 b6 10. cxd5 cxd5 11. Be2 Bb7 12. O-O Rc8 13. Qb3 Bd6 14. Rac1 Qe7 15. Rc2 a6 16. b5 a5 17. Rfc1 Ne4 18. Na4 {Kural,A (2140) -Kozlov,V (2416) ICCF 2009 1/2}) 7. cxd5 cxd5 8. d4 Bd7 9. Bd3 Bc6 10. Nc3 a6 11. Ne5 Ne4 12. Nxe4 dxe4 13. Nxc6 Nxc6 14. Bxe4 Rc8 15. Qa4 {Tagoc,C-Hardwick, M (1234) ICCF 2020 1-0 (40)}) (3... b6 4. c4 (4. Bb2 Bb7 (4... c5 5. b5 d5 6. a4 (6. c4 a6 7. e3 Be7 8. Be2 O-O 9. a4 axb5 10. axb5 Rxa1 11. Bxa1 Nbd7 12. O-O Qc7 13. d3 Bb7 14. Qb3 Ra8 15. Bb2 Ne8 16. Nc3 Ndf6 17. Ra1 Nd6 {Plenagl, G-Anderson,C ICCF 2020 1/2 (40)}) (6. e3 Nbd7 7. c4 Bb7 8. Be2 Bd6 9. d3 dxc4 10. dxc4 Qc7 11. Nbd2 g5 12. h3 Rg8 13. Qc2 h5 14. Bd3 g4 15. hxg4 hxg4 16. Nh4 O-O-O 17. Ne4 Bxe4 {Heijnens,R (2291)-Braak,J (2010) ICCF 2020 0-1 (25)}) 6... Bb7 7. g3 a6 8. Na3 g6 9. d3 Bg7 10. Bg2 O-O 11. O-O axb5 12. Nxb5 Nc6 13. Ne5 Nd7 14. Nxc6 Bxc6 15. Bxg7 {Buczinski,H (2201)-Morais,G (2349) ICCF 2011 1/2 (31)}) 5. e3 (5. g3 c5 6. bxc5 Bxc5 7. c4 Be7 8. Bg2 O-O 9. Nc3 Nc6 10. O-O Na5 11. d3 d5 12. cxd5 Nxd5 13. Ne4 Rc8 14. Rc1 Qd7 15. Ned2 Bf6 16. Bxf6 {Groot,P (2290)-Braak,J (2010) ICCF 2020 1/2 (25)}) 5... Be7 6. c4 O-O 7. d4 (7. Qc2 d6 8. d4 a5 9. Bd3 axb4 10. axb4 Rxa1 11. Bxa1 Na6 12. Bc3 c5 13. dxc5 bxc5 14. b5 Nb4 15. Bxb4 cxb4 16. Nbd2 Qa8 17. O-O Rc8 18. Qb1 Qa3 {Gasanov,E-Saxena,A (2208) ICCF 2009 1/2 (59)}) (7. Be2 d5 8. O-O dxc4 9. Bxc4 a6 10. d4 c6 11. Nbd2 Nbd7 12. Nb3 h6 13. Ne5 Qc7 14. Nxd7 Qxd7 15. Rc1 Rfd8 16. Qc2 Qc7 17. Qe2 a5 18. bxa5 bxa5 {Skerlík,S (2306)-Hiçdönmez,H (2306) ICCF 2011 1/2 (76)}) 7... c5 8. bxc5 bxc5 9. Be2 d5 10. O-O cxd4 11. Nxd4 dxc4 12. Nd2 Nbd7 13. Rc1 Rc8 14. Rxc4 Nc5 15. Qb1 Nfe4 {Dam,J (1639)-Yáñez García,J ICCF 2017 0-1 (66)}) 4... c5 (4... d5 5. cxd5 exd5 6. g3 c6 7. Bb2 Be7 8. Bg2 a5 9. Qb3 c5 10. bxc5 bxc5 11. Qc2 O-O 12. Ng5 g6 13. d3 Nc6 14. Nd2 Qd6 15. O-O Rb8 16. Rab1 { Avchinikov,V (2355)-Schüppel,R (2357) ICCF 2019 1/2 (44)}) 5. bxc5 bxc5 6. g3 Nc6 7. Bg2 Rb8 8. O-O Be7 9. d3 O-O 10. Nc3 d6 11. Bd2 Bd7 12. Qc2 h6 13. Rfc1 d5 14. Bf4 Rc8 15. Ne5 {Avchinikov,V (2294)-Petkov,P (2189) ICCF 2016 1/2}) ( 3... a5 4. b5 b6 5. e3 Bb7 6. Bb2 d6 7. Be2 Be7 8. c4 O-O 9. O-O Nbd7 10. Nd4 e5 11. Nc6 Qe8 12. d4 Bd8 13. Nd2 Bxc6 14. bxc6 Nb8 15. d5 {Leijen,P (2158) -Bes,R (1844) ICCF 2020 1-0 (27)}) 4. Bb2 (4. d4 c6 5. e3 Nbd7 6. c4 Be7 7. Nbd2 O-O 8. Bd3 b6 9. O-O a5 10. bxa5 Rxa5 11. Bb2 Qc7 12. Qc2 g6 13. Rfc1 Bb7 14. cxd5 exd5 15. a4 Rc8 {Ling,A (2062)-Reinhart,K (2471) ICCF 2006 0-1 (47)}) (4. g3 Bd6 5. Bg2 a5 6. b5 e5 7. d3 Nbd7 8. O-O O-O 9. c4 dxc4 10. dxc4 e4 11. Nd4 Be5 12. Nc3 Re8 13. Ra2 Qe7 14. Rd2 Nb6 15. Nxe4 {Coope,D (1958)-Costa Trillo,V (2178) ICCF 2013 0-1 (42)}) 4... c5 (4... Be7 5. e3 O-O 6. c4 (6. Be2 b6 7. O-O c5 8. b5 Bb7 9. d3 (9. c4 Nbd7 10. Qc2 dxc4 11. Qxc4 Bd5 12. Qc2 Rc8 13. Ng5 h6 14. Bxf6 hxg5 15. Bxe7 Qxe7 16. Nc3 Bb7 17. f4 gxf4 18. Rxf4 Nf6 19. Rh4 g6 20. Rf1 Kg7 {Thomsen,J-MacMillen,A (1817) ICCF 2012 0-1 (36)}) 9... Nbd7 10. c4 Ne8 11. Qb3 Nd6 12. Nc3 Bf6 13. cxd5 exd5 14. d4 c4 15. Qc2 g6 16. a4 Re8 17. Rfd1 Bg7 {Dam,J (2118)-Daatselaar,J (2200) ICCF 2020 0-1 (43)}) 6... b6 (6... a5 7. b5 c5 8. d4 Nbd7 9. Be2 dxc4 10. O-O b6 11. Ne5 Bb7 12. Nxc4 Rc8 13. Nbd2 cxd4 14. Bxd4 Ne4 15. Rc1 {Tucci,A (2437)-Boccia,M (2428) ICCF 2015 1/ 2 (28)}) 7. cxd5 (7. d4 c5 (7... Bb7 8. c5 bxc5 9. bxc5 c6 10. Nbd2 Nbd7 11. Rb1 Qa5 12. Qb3 Rab8 13. Bc3 Qc7 14. Qc2 Ne4 15. Nxe4 dxe4 16. Qxe4 {Louro,E (1758)-Hardwick,M (1214) ICCF 2020 1-0 (29)}) 8. cxd5 Nxd5 9. bxc5 bxc5 10. Nbd2 Nc6 11. dxc5 Rb8 12. Qc1 Qa5 13. Ne5 Nxe5 14. Bxe5 Nc7 15. Qc3 Qxc3 16. Bxc3 Bxc5 17. Be5 Rb7 18. Rc1 Bb6 {Fagerbekk,E (2182)-Saxena,D ICCF 2011 1-0 (33)}) 7... exd5 (7... Nxd5 8. Be2 Nd7 9. O-O Bb7 10. Nc3 c5 11. Nxd5 Bxd5 12. bxc5 Nxc5 13. d4 Ne4 14. Ne5 f6 15. Nd3 f5 16. Ne5 Bd6 17. f3 Nf6 18. Qd3 a6 19. a4 {Buss,M (2197)-Jarmuz,F (1984) ICCF 2019 1/2 (68)}) 8. d4 c5 (8... c6 9. Be2 Bd6 10. O-O Re8 11. Qc2 Bb7 12. Nbd2 Nbd7 13. h3 h6 14. Nh4 a5 15. Bc3 axb4 16. axb4 Rxa1 17. Rxa1 Bb8 18. Rd1 {Skerlík,S (2241)-Tieken,F (2233) ICCF 2017 1/2}) 9. dxc5 bxc5 10. bxc5 Na6 11. c6 Qb6 12. Bd4 Qxc6 13. Nc3 Nc7 14. Be2 Ba6 15. O-O Bxe2 16. Qxe2 {Bjazevic,P (2245)-Daatselaar,J (2074) ICCF 2008 1/2}) ( 4... Nbd7 5. e3 (5. d4 Bd6 6. Nc3 a6 7. e3 b6 8. Bd3 Bb7 9. O-O O-O 10. Qe2 Ne4 11. Rfe1 f5 12. Nd1 Rf6 13. c4 Rh6 14. h3 g5 15. Nc3 g4 16. Ne5 Nxe5 {Domenche Redondo,F (1715)-Reyes Cortés,R (1604) ICCF 2015 1-0 (38)}) 5... Nb6 (5... Be7 6. Be2 (6. d4 O-O 7. c4 dxc4 8. Bxc4 c6 9. Nc3 Nb6 10. Bd3 Nbd5 11. Ne2 a5 12. e4 Nb6 13. bxa5 Rxa5 14. O-O Nfd7 15. a4 f5 16. Bc3 Ra7 17. Qb3 {Bjazevic, P-Ling,A (2062) ICCF 2006 1-0 (47)}) 6... c6 (6... Bd6 7. d4 Nb6 8. O-O O-O 9. Bd3 a5 10. b5 Ne4 11. Nc3 f5 12. Ne5 Qe7 13. Qe1 Qh4 14. f3 Qxe1 15. Rfxe1 Nf6 16. Ra2 Nfd7 17. Ne2 a4 {Aymard,M (2010)-Ling,A (2062) ICCF 2006 1/2 (67)}) 7. O-O O-O 8. d3 (8. h3 a5 9. b5 Qc7 10. c4 dxc4 11. Bxc4 Nb6 12. Be2 cxb5 13. Bxb5 Bd7 14. Be5 Bd6 15. Bxd6 Qxd6 16. Bxd7 Nbxd7 17. Nc3 Rfc8 {Graham,S (2178) -Nielsen,P (1850) ICCF 2009 1-0 (36)}) 8... a5 9. c3 Bd6 10. Nbd2 b6 11. Qb3 Qe7 12. d4 c5 13. bxc5 bxc5 14. c4 Rb8 15. Qc2 Ba6 16. Bc3 Rfc8 17. Rfb1 { Stapinski,R (1850)-Thierry,R (2288) ICCF 2018 0-1 (38)}) (5... c5 6. c4 (6. bxc5 Nxc5 7. Be2 Bd6 8. O-O O-O 9. d3 Na4 10. Bxf6 Qxf6 11. Nbd2 Nc3 12. Qe1 b6 13. Nb3 Bd7 14. d4 Rfc8 15. Bd3 Qe7 16. Qc1 {Flewelling,H (1760)-Bourgault,J (1824) ICCF 2018 0-1 (28)}) 6... dxc4 7. bxc5 Nxc5 8. Bxc4 a6 9. a4 Bd6 10. O-O Bd7 11. Be2 O-O 12. Ne5 Nd5 13. Nxd7 Qxd7 14. d4 Ne4 15. Bd3 f5 16. Bxe4 fxe4 17. Nd2 {Walker,J (1746)-McMahon,F (1968) ICCF 2014 1/2 (45)}) 6. Qc1 (6. Be2 Bd6 7. O-O O-O 8. Nc3 c6 9. d4 a5 10. b5 Qc7 11. bxc6 bxc6 12. g3 Qa7 13. Ne5 Bxe5 14. dxe5 Nfd7 15. Bd3 Ba6 16. Qh5 h6 17. Rfb1 Rfb8 {Marconi,R (1994) -Marcu,V ICCF 2014 0-1 (36)}) 6... Be7 7. c4 Nxc4 8. Bxc4 dxc4 9. Qxc4 O-O 10. O-O b6 11. Nd4 Bd7 12. Nc6 Bxc6 13. Qxc6 Qd3 14. Qxc7 Bd6 15. Qc1 Ne4 16. Nc3 { Buss,M (2260)-Matozo,P (2260) ICCF 2020 1/2 (39)}) (4... Bd6 5. e3 (5. d3 O-O 6. Nbd2 a5 7. b5 Qe7 8. c4 c6 9. a4 dxc4 10. dxc4 e5 11. e3 Rd8 12. Qc2 e4 13. Nd4 Bb4 14. Rd1 Bg4 15. Be2 c5 16. Bxg4 {Louro,E (2193)-Cárdenas Huaman,A ICCF 2006 0-1 (35)}) 5... Nc6 (5... c6 6. c4 (6. d4 a5 7. b5 cxb5 8. Bxb5+ Bd7 9. Nc3 Qb6 10. Qd3 O-O 11. O-O Rc8 12. Rab1 a4 13. Ba1 Qa5 14. Ne5 Bc6 15. Bb2 Nbd7 16. Nxc6 bxc6 17. Bxa4 Nb6 {Balañá Romero,R (2027)-Benages Mabres,V ICCF 2007 1-0 (61)}) 6... Bd7 7. d3 O-O 8. Nbd2 a5 9. Be2 axb4 10. d4 bxa3 11. Qb3 a2 12. c5 Be7 13. Bc3 Na6 14. Rxa2 Qc7 15. Ne5 Rfd8 16. O-O Rdb8 17. Ba5 { Domenche Redondo,F (1731)-Ríos Valle,D ICCF 2020 0-1 (41)}) 6. c4 dxc4 (6... e5 7. c5 Be7 8. Nxe5 Ne4 9. Nxc6 bxc6 10. Bxg7 Rg8 11. Bb2 a5 12. d3 Nf6 13. Nd2 axb4 14. axb4 {Michas,J (1756)-Magill,R (1227) ICCF 2017 1-0 (31)}) 7. Bxc4 O-O 8. O-O a6 9. d4 b5 10. Bd3 h6 11. Qc2 Bb7 12. e4 Be7 13. Nbd2 Qd7 14. Nb3 Rfd8 15. Rac1 Rac8 16. Rfe1 {Stapinski,R (1913)-Erdem,N (1804) ICCF 2011 1-0}) (4... Nc6 5. Nc3 Bd6 6. Nb5 O-O 7. Nxd6 Qxd6 8. b5 Na5 9. e3 c5 10. Be2 b6 11. O-O Bd7 12. a4 Nc4 13. Bxc4 dxc4 14. Bxf6 gxf6 15. Qe2 e5 16. Qxc4 {Walker,J (1916) -Dinuzzi,V ICCF 2012 1-0}) (4... a5 5. b5 c5 6. e3 (6. d3 Be7 7. Nbd2 O-O 8. e3 b6 9. c4 dxc4 10. Nxc4 Nbd7 11. Be2 Bb7 12. O-O Nd5 13. Rc1 N7f6 14. Qd2 Rc8 15. e4 Nc7 16. Nxb6 Rb8 17. Qxa5 Na8 {O'Brien,P-Tupper,A (1644) ICCF 2013 1-0 (41)}) 6... Bd6 7. c4 Nbd7 8. d4 (8. a4 O-O 9. Be2 Qc7 10. cxd5 exd5 11. h3 Ne5 12. Qc2 Qe7 13. O-O Re8 14. Nc3 Nxf3+ 15. Bxf3 Qe5 16. g3 d4 17. exd4 {Morley, P (2345)-Munoz,L (1934) ICCF 2012 1/2 (47)}) (8. d3 O-O (8... dxc4 9. dxc4 Qc7 10. Nc3 b6 11. Bd3 Bb7 12. Qc2 O-O-O 13. O-O-O Ne5 14. Nxe5 Bxe5 15. f4 Bd6 16. Kb1 Be7 17. Qe2 Kb8 18. Rhf1 h5 19. g3 Rd7 20. e4 {Fagerbekk,E (2215) -Spierenburg,P (1952) ICCF 2013 1-0 (58)}) 9. Nbd2 b6 10. g3 Bb7 11. Bg2 Re8 12. a4 Qc7 13. cxd5 exd5 14. Rc1 Qd8 15. O-O Rb8 16. Re1 Bf8 17. Rc2 Qc7 18. Nd4 Qd6 19. Nf5 Qe6 {Stapinski,R (1935)-Åberg,L (2119) ICCF 2013 0-1 (55)}) 8... O-O 9. Nbd2 b6 (9... cxd4 10. exd4 dxc4 11. Bxc4 Nb6 12. Bd3 Nfd5 13. O-O Bd7 14. Re1 Be7 15. Ne5 Be8 16. Ne4 f6 17. Nf3 Rc8 18. Rc1 Bh5 19. Nc5 Bxc5 20. dxc5 Nf4 21. Bf1 {Kappelhof,W (2338)-Kögeler,A (2185) ICCF 2020 (40)}) 10. Be2 (10. Bd3 Bb7 11. Qe2 Ne4 12. cxd5 exd5 13. O-O Qe7 14. Rfc1 f5 15. dxc5 bxc5 { Visser,A (1997)-Dias,V ICCF 2012 0-1 (53)}) 10... Bb7 11. cxd5 (11. O-O Rc8 12. cxd5 exd5 13. Rc1 c4 14. Re1 Qe7 15. a4 Ng4 16. Nf1 Bb4 17. Bc3 f5 18. h3 Ngf6 19. Ng3 Ne4 20. Nxe4 fxe4 {Mortensen,H (2049)-Kayser,P (2055) ICCF 2011 0-1 (30)}) 11... exd5 12. dxc5 Nxc5 13. O-O Rc8 14. Rc1 Nfe4 15. g3 Re8 16. Nd4 { Ilyushchenko,Y-Simakov,V (2289) ICCF 2009 1/2 (69)}) 5. bxc5 (5. b5 Bd6 6. e3 Nbd7 7. c4 (7. Be2 e5 8. d3 Qa5+ 9. Bc3 Qc7 10. Nbd2 O-O 11. Nf1 d4 12. Bd2 Nb6 13. a4 Re8 14. e4 c4 15. a5 {Wilshusen,H (1317)-Kind,M ICCF 2019 0-1 (46)}) 7... O-O 8. Nc3 (8. Be2 b6 9. O-O e5 10. cxd5 e4 11. Ne1 Nxd5 12. d3 Qc7 13. dxe4 Bxh2+ 14. Kh1 Be5 15. Bxe5 Qxe5 16. Ra2 Qxe4 17. Bf3 Qc4 {Martínez Muñoz, J-Miguel de Frutos,V (1816) ICCF 2012 0-1 (29)}) 8... b6 9. Be2 Bb7 10. O-O Qe7 11. d3 Rad8 12. Qa4 Bb8 13. Rad1 e5 14. Nd2 d4 15. Ncb1 Rfe8 16. e4 Qe6 { Diener,R (1950)-Hayden,M (1987) ICCF 2013 1-0 (55)}) (5. e4 dxe4 6. Ne5 cxb4 7. Bb5+ Bd7 8. Qe2 bxa3 9. Nxa3 Be7 10. Bxd7+ Nbxd7 11. g4 Nxe5 12. Bxe5 O-O 13. g5 Qd5 14. Bxf6 gxf6 15. gxf6 Bxf6 16. Rg1+ Kh8 {Yokoyama,T-Ikegami,O (1908) ICCF 2016 0-1 (26)}) 5... Bxc5 (5... Nc6 6. d4 Be7 7. e3 a6 8. c4 b6 9. cxb6 Qxb6 10. Bc3 Bb7 11. Nbd2 O-O 12. c5 Qc7 13. Bd3 Rab8 14. O-O Nxd4 15. exd4 Rfe8 16. Qc2 Kh8 17. Ne5 {Visser,A (1845)-Khalil,E ICCF 2019 1-0 (29)}) 6. e3 ( 6. d4 Be7 7. e3 O-O 8. Nbd2 (8. Bd3 b6 9. Nbd2 Nbd7 10. c4 dxc4 11. Nxc4 Bb7 12. O-O b5 13. Nce5 a6 14. Qe2 Nb6 15. Rfc1 Qd6 16. Bc3 Nfd5 17. Bd2 f6 18. e4 fxe5 19. dxe5 {Lagergren,H (2073)-Geus,J (1953) ICCF 2005 0-1 (54)}) 8... b6 ( 8... Nc6 9. Bd3 Bd7 (9... Qc7 10. O-O Bd6 11. c4 b6 12. cxd5 {1/2 (12) Louro,E (2128)-Wilshusen,H (1799) ICCF 2010}) 10. O-O Qc7 11. c4 Rac8 12. Rc1 Qb8 13. Qe2 dxc4 14. Nxc4 a6 15. Nb6 Rc7 16. Rc2 Nd5 17. Nxd7 Rxd7 18. Bxa6 bxa6 19. Rxc6 Rb7 {Walker,J (1736)-Levin,J (1717) ICCF 2016 1-0 (31)}) 9. c4 Ba6 10. Rc1 dxc4 11. Nxc4 b5 12. Nce5 Bxa3 13. Bxa3 Qa5+ 14. Qd2 Qxa3 15. Bd3 b4 16. O-O Bxd3 17. Nxd3 a5 {Hospers,B (1993)-Daatselaar,J (2200) ICCF 2020 1/2 (25)}) 6... O-O (6... Nc6 7. d4 Bd6 (7... Qb6 8. Ra2 Bd6 9. c4 dxc4 10. Bxc4 O-O 11. O-O Bd7 12. Bd3 {Plenagl,G-Panugaling,R (1748) ICCF 2020}) 8. Be2 (8. Bd3 b5 9. Bxb5 Qa5+ 10. Nc3 O-O 11. Nd2 Rb8 12. Nb3 Qc7 13. Bd3 Na5 14. Ra2 Nc4 15. Ba1 e5 16. Be2 Re8 17. O-O exd4 18. Qxd4 Bxh2+ 19. Kh1 Be5 {Dam,J (2118) -Schreuders,A (2335) ICCF 2020 (35)}) 8... O-O 9. Nbd2 (9. O-O b6 10. Nbd2 Bb7 11. c4 Rc8 12. Rc1 Qe7 13. cxd5 Nxd5 14. Nc4 Bc7 15. Nce5 Nxe5 16. dxe5 Rfd8 17. Qa4 a6 18. Qg4 b5 19. Ng5 Nb6 20. Ne4 Na4 {Godoy,M-Lindegaard,P (1935) ICCF 2005 1/2 (27)}) 9... Na5 10. c4 b6 11. O-O Ba6 12. cxd5 Bxe2 13. Qxe2 exd5 14. Bc3 Nc6 15. a4 Rb8 16. h3 Qe7 17. Rfc1 Rfc8 18. Qb5 {Skerlík,S (2234)-Yüce, A (2239) ICCF 2019 1/2}) (6... Bd7 7. d4 Bb6 8. c4 O-O 9. Be2 Ba5+ 10. Nbd2 dxc4 11. Bxc4 Bc6 12. O-O Nbd7 13. Qe2 Rc8 14. Rac1 Ne4 15. Nxe4 Bxe4 16. Nd2 Bxd2 17. Qxd2 Bxg2 18. Kxg2 {Thau,O (1771)-Tavadyan,T (1832) ICCF 2019 1/2}) 7. c4 (7. d4 Bd6 (7... Qb6 8. Qc1 (8. Ra2 Be7 9. Bd3 {Plenagl,G-Kessler,M ICCF 2020}) 8... Be7 9. c4 (9. a4 Bd7 10. Nbd2 Rc8 11. Bd3 Nc6 12. c3 Qc7 13. h3 e5 14. Nxe5 Nxe5 15. dxe5 Qxe5 16. Qc2 {Lakbur,L (1585)-Rudi,R ICCF 2020 0-1 (29)} ) 9... Bd7 10. c5 Qc7 11. Bd3 b6 12. cxb6 Qxc1+ 13. Bxc1 axb6 14. Bb2 Ne4 15. Nc3 Nd6 16. Ne5 Bc8 17. a4 f6 18. Nf3 Ba6 19. Nb5 {Vegjeleki,A (2195)-Zylla,J (2129) ICCF 2009 1/2 (37)}) 8. c4 b6 (8... Be7 9. Nbd2 h6 10. Bd3 dxc4 11. Nxc4 b6 12. O-O Bb7 13. Qe2 b5 14. Nce5 a6 15. Rfc1 Nbd7 16. a4 b4 17. Nc6 Bxc6 18. Rxc6 Nb8 {Rotte,P (1780)-Bes,R (1844) ICCF 2020}) 9. Nc3 Ba6 10. Nb5 Be7 11. Bd3 Nbd7 12. cxd5 Nxd5 13. O-O Bb7 14. Qe2 a6 15. Nc3 Nxc3 16. Bxc3 Rc8 17. Rfc1 b5 18. Bb4 Bxb4 {Thau,O (1718)-Csoma,R (1662) ICCF 2020 1-0 (37)}) (7. Be2 Nc6 8. c4 d4 9. Qb3 e5 10. O-O Re8 11. a4 Bf5 12. Ba3 b6 13. Bxc5 bxc5 14. d3 dxe3 15. fxe3 Ng4 16. e4 Nd4 17. Qd1 Ne3 18. Qd2 Nxf1 {Thomsen,J (1639)-Raasch, W ICCF 2013 0-1}) 7... Nc6 (7... Bd7 8. d4 (8. Qc2 Bd6 9. Nc3 Nc6 10. cxd5 exd5 11. Be2 a6 12. O-O Rc8 13. Rfc1 Re8 14. d4 b5 15. Qd1 Na5 16. Ne5 Nc4 17. Nxd7 Qxd7 18. Qb3 Ng4 19. Bxg4 Qxg4 {Stapinski,R (1993)-Gniazdowski,M (2286) ICCF 2007 0-1}) 8... Bd6 9. Nbd2 Qa5 10. Bd3 dxc4 (10... Ba4 11. Qe2 Ne4 12. O-O f5 13. Rfc1 Nd7 14. Nb1 Bc6 15. Bc3 Qd8 16. Bb4 Qe7 17. Bxd6 Qxd6 18. a4 dxc4 19. Bxc4 Rac8 20. a5 Bd5 21. Nbd2 Bxc4 22. Nxc4 {Schreuders,A (2335)-Daatselaar,J (2200) ICCF 2020 1/2 (54)}) 11. Bxc4 Bc6 12. O-O Nbd7 (12... Rc8 13. Qe2 Nbd7 14. Bd3 Qh5 15. e4 Bf4 16. Rfe1 Nb6 17. Rab1 Rab8 18. Ba1 h6 19. Nf1 { Fagerbekk,E (2193)-Ryan,P (2179) ICCF 2013 1-0 (34)}) 13. Bd3 Bb5 14. Bc3 Qxc3 15. Bxb5 Nb6 16. a4 a6 17. Be2 Qa5 18. e4 Be7 19. Qb3 {Vegjeleki,A (2195) -Daatselaar,J (2177) ICCF 2009 1/2 (49)}) (7... Be7 8. d4 Bd7 9. Nc3 Qa5 10. Nd2 Bc6 11. f3 Nbd7 12. Bd3 Qc7 13. Qe2 Nb6 14. O-O dxc4 15. Nxc4 Nxc4 16. Bxc4 Rac8 17. Bd3 h6 18. Ne4 Nd5 19. Rfc1 {Carradori,D-Palladino,M (2068) ICCF 2009 1/2 (78)}) (7... dxc4 8. Bxc4 b6 9. d4 Be7 10. Nbd2 Bb7 11. Qe2 Nc6 12. O-O Qd7 13. e4 a6 14. Rfe1 b5 15. Ba2 Rfd8 16. Rad1 Qc7 17. d5 exd5 18. Ng5 Qf4 19. Nxf7 {Kural,A (2194)-Kaabi,M (2096) ICCF 2010 1-0 (25)}) 8. d4 (8. Qc2 d4 9. Bd3 e5 10. O-O Bg4 11. Ng5 h6 12. Ne4 Nxe4 13. Bxe4 Be6 14. Re1 Qh4 15. Bxc6 bxc6 16. exd4 exd4 17. d3 Rfe8 18. Nd2 Qd8 19. Re2 Be7 {Gasanov,E-Hasidume,S (1849) ICCF 2009 1/2 (47)}) 8... Bd6 (8... Be7 9. Nbd2 (9. Nc3 Na5 10. cxd5 exd5 11. Bd3 Nc4 12. Bxc4 dxc4 13. O-O b5 14. d5 Qb6 {Buczinski,H (2200) -Razumikhin,A (2250) ICCF 2011 1/2 (26)}) 9... b6 (9... Na5 10. Bd3 (10. Ne5 Ne4 11. Nxe4 dxe4 12. Bc3 f6 13. Qa4 fxe5 14. Qxa5 Qxa5 15. Bxa5 exd4 16. exd4 Bh4 17. g3 Bf6 18. O-O-O {Hoch,H (2210)-Guzy,G (2598) ICCF 2006 0-1 (56)}) (10. Rb1 dxc4 11. Nxc4 Nxc4 12. Bxc4 b5 13. Bd3 a6 14. O-O Bb7 15. Re1 Nd5 16. a4 Nb4 17. axb5 axb5 18. Bxb5 Be4 19. Rc1 Qb6 20. Bc4 Na2 21. Bxa2 Rxa2 { Fagerbekk,E (2292)-Johansen,A (2048) ICCF 2015 1/2 (72)}) 10... Nxc4 11. Nxc4 dxc4 12. Bxc4 b5 13. Bd3 a6 14. O-O Bb7 15. Qe2 (15. Re1 Ne4 16. Ne5 Rc8 17. f3 Nd6 18. e4 f6 19. Ng4 Nc4 20. Bxc4 bxc4 21. Bc3 Qd7 {Carradori,D-Zavrazhnov,A ICCF 2012 1/2 (56)}) 15... Nd5 16. Rfc1 Rc8 17. Rxc8 Qxc8 18. Rc1 Qe8 19. g3 Qd8 20. Ne5 Bd6 21. Nc6 {Ringsborg,A (2280)-Jørgensen,P (2374) ICCF 2020 1/2}) (9... dxc4 10. Bxc4 Bd7 11. O-O Na5 12. Bd3 Rc8 13. Ne5 Bd6 14. e4 Be8 15. Ndc4 Nxc4 16. Nxc4 Bb8 17. Ne3 Bc6 18. d5 exd5 19. exd5 Qd6 20. g3 Bd7 21. Qf3 { Szabo,A (2304)-Secrieru,I ICCF 2005 1-0 (36)}) 10. cxd5 (10. Bd3 Bb7 11. O-O Rc8 (11... Na5 12. cxd5 Nxd5 13. Qe2 f6 14. g3 Qd7 15. e4 Nc7 16. Rfe1 Rfd8 17. Qf1 Rac8 18. Rac1 Ne8 19. Bb5 Qd6 20. Qh3 Rxc1 21. Rxc1 g6 22. d5 e5 23. g4 { Fagerbekk,E (2220)-Glørstad,T (2245) ICCF 2010 1-0}) 12. Rc1 (12. Qe2 g6 (12... Ba6 13. Rac1 Na5 14. cxd5 {1/2 (14) Kural,A (2249)-Oren,I (2285) ICCF 2010}) 13. Rfc1 Na5 14. Rc2 Bd6 15. Rac1 Ne4 16. cxd5 Rxc2 17. Rxc2 exd5 18. Ba6 Nxd2 19. Nxd2 Qd7 20. Bxb7 Qxb7 {Kural,A (2249)-Bresadola,G (2350) ICCF 2010 1/2 (39)}) 12... dxc4 13. Bxc4 Na5 14. Bd3 Qd5 15. e4 Qa2 16. Rb1 Rfd8 17. Re1 Bxa3 18. Qa4 Qxb2 19. Rxb2 Bxb2 20. e5 Nd5 {Aymard,M (2010)-Reinhart,K (2471) ICCF 2006 0-1 (62)}) 10... Qxd5 11. Bd3 Bb7 12. O-O Rac8 13. e4 Qh5 14. Re1 Rfd8 15. Nf1 Qa5 16. Qe2 Nh5 17. Qe3 Ba6 18. Bxa6 Qxa6 19. e5 g6 20. g4 {Bjazevic, P-Reinhart,K (2471) ICCF 2006 1/2 (37)}) (8... Bb6 9. Nc3 Ba5 10. Rc1 Ne4 11. Bd3 f5 12. O-O Bc7 13. cxd5 Nxc3 14. Bxc3 exd5 {Fagerbekk,E (2207)-Pajukari,S (1775) ICCF 2012 1-0 (28)}) 9. Nbd2 b6 (9... Ne4 10. cxd5 exd5 11. Nxe4 dxe4 12. Nd2 Bf5 13. g4 Be6 14. Bg2 Qh4 15. Nxe4 Bc7 16. h3 f5 17. gxf5 Bxf5 18. Nd2 Ba5 19. O-O Bxh3 20. Nf3 Qg4 21. Ne1 {Stapinski,R (2005)-Scheidig,L ICCF 2007 1/2 (36)}) (9... Ne8 10. c5 Bc7 11. Be2 f5 12. O-O Nf6 13. Qc2 Qe7 14. Rac1 Bd7 15. Ne5 Be8 16. f4 Bxe5 17. fxe5 Ng4 18. Qb3 Nh6 19. a4 g5 20. Nb1 a6 21. Rcd1 {O'Brien,P-Cox,R (1778) ICCF 2014 1-0 (40)}) 10. Nb3 (10. cxd5 exd5 11. Ne5 ( 11. Bb5 Bb7 12. O-O Rc8 13. Qe2 Qe7 14. Rfc1 Na5 15. Rc3 Rxc3 16. Bxc3 Nc6 17. a4 Rc8 18. Qd1 Nb4 19. Qb3 a6 20. Be2 {Degterev,P (2475)-Zhak,B (2556) ICCF 2009 1/2 (57)}) 11... Bb7 12. Bd3 Rc8 13. Bf5 Rc7 14. O-O Bc8 15. Bd3 Bxe5 16. dxe5 Ne4 17. Nxe4 dxe4 18. Bxe4 Na5 19. Qxd8 Rxd8 20. Rfd1 {Stapinski,R (1936) -Deste,D (1945) ICCF 2012 1-0 (52)}) 10... Ba6 11. Nfd2 Rc8 12. Be2 Rc7 13. Rc1 Qb8 14. O-O {Ringsborg,A (2280)-Jensen,T (2399) ICCF 2020 1/2 (29)}) (2... d6 3. Bb2 d5 (3... e5 4. d3 a5 5. b5 Be7 6. c4 Nbd7 7. Nc3 Nf8 8. g3 Ne6 9. Bg2 O-O 10. O-O c6 11. Rb1 Bd7 12. Ba3 Re8 13. bxc6 Bxc6 14. Qd2 e4 15. Nh4 { Coope,D (1870)-Douglass,P (1911) ICCF 2017 1/2 (39)}) 4. e3 e6 5. b5 Be7 (5... a6 6. a4 axb5 7. axb5 Rxa1 8. Bxa1 Bd6 9. Be2 O-O 10. O-O c6 11. c4 cxb5 12. cxb5 Nbd7 13. d4 h6 14. Nbd2 b6 15. Qb3 Ne4 16. Bb2 Nxd2 17. Nxd2 {Böhnke,H (2099)-Mergard,H (2104) ICCF 2010 1/2 (25)}) 6. c4 a6 7. a4 axb5 8. axb5 Rxa1 9. Bxa1 O-O 10. Be2 dxc4 11. Bxc4 c5 12. O-O Nbd7 13. Qb3 b6 14. d3 {Whittaker, I (2085)-Wood,B (1976) ICCF 2019 1-0 (27)}) (2... e5 3. Nxe5 Bxb4 4. Nd3 (4. e3 d5 5. Be2 Nc6 6. Nxc6 bxc6 7. O-O O-O 8. d4 Bf5 9. Nd2 Qe7 10. Rb1 a5 11. Bd3 Bg4 12. f3 Bh5 13. Re1 c5 14. dxc5 Rab8 15. Re2 Bxc5 {Fournier,F (2098)-Aymard, M (2077) ICCF 2015 1/2 (51)}) 4... Ba5 5. g3 d6 6. Bg2 O-O 7. Na3 c6 8. Nc4 Re8 9. Nxa5 Qxa5 10. Bb2 Ne4 11. f3 Nc5 12. Bc3 Nxd3+ 13. cxd3 Qc7 14. O-O { Coope,D (1921)-Blondel,F (1921) ICCF 2017 1-0}) (2... b6 3. Bb2 Bb7 4. b5 e6 5. c4 Be7 6. a4 O-O 7. g3 a6 8. Bg2 d5 9. cxd5 Nxd5 10. O-O Nd7 11. Nc3 c5 12. Nxd5 exd5 13. Qc2 Bf6 14. d4 {Buss,M (2251)-Colombo Berra,F (2223) ICCF 2020 1/ 2 (32)}) 3. e3 (3. Bb2 e5 (3... Bg4 4. c4 (4. Ne5 Bf5 (4... Bh5 5. f3 e6 6. e3 Nbd7 7. Nd3 Bd6 8. Be2 O-O 9. O-O c6 10. f4 Bxe2 11. Qxe2 Qe7 12. a3 a5 13. b5 cxb5 14. Nc3 b4 15. axb4 Bxb4 16. Nb5 {Degterev,P (2460)-Joppich,U (2512) ICCF 2006 1/2 (74)}) 5. b5 Nbd7 6. Nxd7 Nxd7 7. e3 e6 8. d3 c6 9. Nd2 cxb5 10. e4 Bg6 11. exd5 exd5 12. Qe2+ Qe7 13. Qxe7+ Kxe7 14. Be2 Re8 15. O-O f6 {Baumann, W (2109)-Skogfeldt,T (2156) ICCF 2009 0-1 (41)}) 4... e6 5. e3 (5. a3 a5 6. e3 axb4 7. axb4 Rxa1 8. Bxa1 c6 9. c5 Be7 10. h3 Bf5 11. g4 Bg6 12. g5 Nfd7 13. Bxg7 Rg8 14. Bc3 Bxg5 15. d4 Bf6 {Koval,V (2334)-Schulenberg,H (2290) ICCF 2018 1/2 (26)}) 5... Bxf3 6. gxf3 Be7 7. Rg1 O-O 8. Qb3 c6 9. Nc3 g6 10. Rc1 dxc4 11. Qxc4 b5 12. Qf4 a5 13. a3 axb4 14. axb4 Nbd7 15. h4 {Whittaker,I (2085)-Dimitrov,G (2077) ICCF 2019 1/2 (40)}) (3... Nbd7 4. d3 (4. e3 e6 5. b5 Bd6 6. Be2 (6. d4 O-O 7. Bd3 c5 8. dxc5 Nxc5 9. O-O Qe7 10. c4 e5 11. Be2 dxc4 12. Bxc4 e4 13. Ne1 Rd8 14. Qc2 Bxh2+ 15. Kxh2 Ng4+ 16. Kg1 Qh4 17. Bxf7+ Kxf7 {Muliuolis,V (1933)-Gralke,W ICCF 2020 0-1 (30)}) 6... a6 7. a4 e5 8. c4 (8. O-O e4 9. Ne1 Qe7 10. c4 dxc4 11. Bxc4 Ne5 12. Be2 O-O 13. Nc3 c5 14. bxc6 bxc6 15. Rc1 Rb8 16. Qc2 Bf5 17. Rb1 Qe6 18. d4 {Flewelling,H (1788)-Gonçalves,C (1770) ICCF 2016 0-1}) 8... axb5 9. axb5 Rxa1 10. Bxa1 dxc4 11. Qc2 O-O 12. Bxc4 Qe7 13. d3 Nb6 14. Bb3 Nfd7 15. O-O Nc5 {Fernández Fornés,J (2302)-Glinz, A (2397) ICCF 2012 0-1 (69)}) 4... e5 5. b5 e4 6. dxe4 dxe4 7. Ne5 e3 8. fxe3 Bb4+ 9. Nd2 Nxe5 10. Bxe5 Qe7 11. a3 Bxd2+ 12. Qxd2 Qxe5 13. O-O-O Qa1# { 0-1 (13) Hanamitsu,I (1811)-Ling,A (2062) ICCF 2006}) (3... b6 4. e3 Bg4 5. Be2 e5 6. Nxe5 Bxe2 7. Qxe2 Nbd7 8. Nxd7 Qxd7 9. b5 Be7 10. Nc3 O-O 11. h3 Ne4 12. O-O Bb4 13. Nxe4 dxe4 14. Rfd1 Rad8 15. a4 {Yeung,C (1664)-Yeung,N ICCF 2011 1-0 (29)}) 4. Nxe5 Bxb4 5. e3 (5. c4 O-O 6. Qb3 Be7 (6... Bd6 7. cxd5 Re8 8. Nf3 Na6 9. Nc3 Nc5 10. Qc2 Bf8 11. g3 g6 12. e3 Bf5 13. d3 Nxd5 14. Nxd5 Qxd5 15. Qc3 f6 16. Qxf6 Rxe3+ 17. fxe3 Qxf3 18. Kd2 {Coope,D (1921)-Meneghetti,J (1792) ICCF 2017 0-1 (54)}) 7. cxd5 (7. e3 Nc6 8. cxd5 Nxd5 9. Nc3 Be6 10. Nxd5 Bxd5 11. Nxc6 bxc6 12. Qc2 Rb8 13. Bc3 Qd6 14. h4 Bf6 15. Bxf6 Qxf6 16. Rb1 h6 17. f3 Rb6 18. Kf2 Rfb8 {Marconi,R (1961)-Lujambio,A (2036) ICCF 2016 1/2 (46)} ) 7... Qxd5 8. Qxd5 Nxd5 9. Nc3 Nb6 (9... Nxc3 10. Bxc3 Na6 11. e4 Nc5 12. f3 f6 13. Bc4+ Be6 14. Bxe6+ Nxe6 15. Nc4 {Walker,J (1920)-Sousa,C (2132) ICCF 2012 0-1 (31)}) 10. e3 c6 11. a4 a5 12. Nc4 Nxc4 13. Bxc4 Bb4 14. O-O Re8 15. d4 Bf5 16. Rfc1 Nd7 {Taulien,H (2380)-Bolz,B (2110) ICCF 2011 1/2 (35)}) 5... O-O 6. c4 (6. Bd3 c5 7. c4 d4 8. O-O Re8 9. exd4 cxd4 10. Qb3 a5 11. Nf3 Nc6 12. h3 a4 13. Qd1 a3 14. Bc1 Ne5 15. Nxe5 Rxe5 16. Kh1 Qd6 17. Qf3 Bd7 { Nicotera,A-Franceschetti,G ICCF 2011 0-1}) (6. Be2 Nbd7 (6... Nc6 7. Nf3 Re8 ( 7... Qe7 8. O-O Be6 (8... Bg4 9. d3 h6 10. Nbd2 Bd6 11. c4 Be6 12. cxd5 Nxd5 13. Ne4 Ba3 14. Bxa3 Qxa3 15. Qc1 Qa5 16. d4 Bf5 17. Nfd2 Bxe4 18. Nxe4 Rfe8 19. Bf3 {Cottarelli,F (2070)-Chubukin,A (2057) ICCF 2008 1/2 (33)}) 9. d3 (9. d4 Ne4 10. c3 Bd6 11. Nbd2 f5 12. c4 Qf6 13. cxd5 Bxd5 14. Nc4 f4 15. Nxd6 cxd6 16. exf4 Qxf4 17. Qc1 Rae8 18. Qxf4 {1/2 (18) Silfver,T (1730)-Tanabe,K ICCF 2015}) 9... Bd6 10. Nbd2 b5 (10... Rfd8 11. Qc1 b5 12. c4 bxc4 13. dxc4 Ne4 14. cxd5 Bxd5 15. Bc4 Bxc4 16. Nxc4 Qe6 17. Nxd6 Rxd6 18. Qc2 Rad8 19. Rac1 { Müller,D (2379)-Santos Etxepare,A (2103) ICCF 2016 1-0}) 11. c4 bxc4 12. dxc4 Rab8 13. Rb1 Ne4 14. Ba1 Rxb1 15. Qxb1 Nxd2 16. Nxd2 Rd8 17. Qc2 Be5 18. Bxe5 Nxe5 19. cxd5 {Avchinikov,V-Cuccumini,V (2192) ICCF 2014 1/2 (50)}) (7... Bf5 8. O-O Qe7 (8... Re8 9. d3 (9. c4 Qd6 (9... dxc4 10. Bxc4 Na5 11. Be2 Bd6 12. d3 Nc6 13. a3 a6 14. Nbd2 Nd5 15. h4 Nb6 16. Qc2 Rc8 17. e4 Bg4 18. d4 Bf4 19. g3 Bxd2 20. Qxd2 Rxe4 21. Rfe1 {Frydendal,O (1899)-Landers Rodriguez,J (2019) ICCF 2010 0-1 (27)}) 10. a3 Ba5 11. d4 Ng4 12. h3 Nf6 13. Nbd2 Rad8 14. c5 Qe7 15. Nb3 Ne4 16. Rc1 a6 17. Ne5 Nxe5 18. dxe5 b6 19. Bxa6 Qg5 20. Qf3 Rb8 { Bjazevic,P-Haznedaroglu,K (1990) ICCF 2006 1-0 (31)}) 9... Bd6 (9... a5 10. Nbd2 a4 11. a3 Bc5 12. d4 Bd6 13. c4 dxc4 14. Nxc4 Bf8 15. Rc1 Qd5 16. Nce5 Qa2 17. Ba1 Qxa3 18. Nxc6 bxc6 19. Rxc6 Bd6 20. Ne5 Be4 21. Rc3 {Cottarelli,F (2185)-Haznedaroglu,K (1990) ICCF 2006 1/2 (51)}) (9... h6 10. Nbd2 Bd6 11. c4 Ne5 12. Bxe5 Bxe5 13. Nxe5 Rxe5 14. Qb3 Re6 15. cxd5 Qxd5 16. Rfc1 Qxb3 17. Nxb3 Re7 18. Na5 c6 19. Rab1 Bc8 20. e4 Rc7 21. f4 {Vegjeleki,A (2145)-Yeung,C (1642) ICCF 2008 1-0 (27)}) (9... Qd6 10. c3 (10. a3 Ba5 11. Nbd2 Ng4 12. c4 Bxd2 13. Qxd2 dxc4 14. Qc3 Nce5 15. Nxe5 Qxe5 16. Qxe5 Nxe5 17. dxc4 f6 18. Rfd1 Rad8 19. Bd4 Bc2 20. Rdc1 Bd3 21. Kf1 c5 {Skerlík,S (2352)-Leupold,V (2319) ICCF 2007 1/2}) 10... Ba5 11. Nbd2 Ne5 12. Nxe5 Qxe5 13. Nf3 Qd6 14. Qa4 Bb6 15. c4 c6 16. Rad1 Rad8 17. Ba3 Bc5 18. Bxc5 Qxc5 19. d4 Qe7 20. Rc1 dxc4 { Sodomski,A (1934)-Kazmierczuk,Z (1957) ICCF 2008 1/2 (33)}) 10. Nbd2 b5 11. c4 bxc4 12. dxc4 Rb8 13. Bxf6 Qxf6 14. cxd5 Nb4 15. Nc4 Be4 16. Nfd2 Bc2 17. Qc1 Bg6 18. Nxd6 cxd6 19. Qc4 Rec8 20. Qg4 {Flewelling,H (1843)-Robertshaw,A (1893) ICCF 2014 0-1 (31)}) (8... a6 9. d3 Re8 (9... Qe7 10. Nbd2 b5 (10... Rfe8 11. a3 Bc5 12. d4 Ba7 13. c4 dxc4 14. Nxc4 Be4 15. Ncd2 Bd5 16. Qc2 Ne4 17. Bd3 Rad8 18. Nxe4 Bxe4 19. Bxe4 Qxe4 20. Qxe4 {Müller,D (2379)-Shapiro,B (2107) ICCF 2016 1-0 (49)}) 11. h3 (11. a3 Bd6 12. c4 dxc4 13. dxc4 b4 14. c5 Bxc5 15. Qc1 Nd7 16. axb4 Nxb4 17. Qc3 f6 18. Ra5 Be6 19. Bc4 Nd5 20. Qc1 c6 21. Rxa6 Rxa6 22. Bxa6 {Hoch,H (2106)-Walters,G (2111) ICCF 2008 1/2 (34)}) 11... h6 12. c3 Bd6 13. a4 Ne5 14. Nxe5 Qxe5 15. Nf3 Qe7 16. Qb3 c5 17. Qa2 Qb7 18. Rfd1 Rfd8 19. c4 dxc4 20. Bxf6 gxf6 21. Nd2 {Semenov,V (2250)-Sazon,A (2127) ICCF 2010 0-1 (62)}) (9... Bd6 10. Nbd2 Re8 11. c4 Be6 12. cxd5 Nxd5 13. Ne4 h6 14. Qc2 Bf5 15. Rab1 Bf8 16. a3 Rb8 17. Rfc1 Be7 18. Ng3 Bh7 19. Nd2 Bd6 20. Nde4 Be5 21. Nc5 {Walker,J (1943)-Andrasiu,M ICCF 2007 1-0 (51)}) 10. Nbd2 Be7 11. a4 b6 12. Rc1 b5 13. axb5 {1/2 (13) Cottarelli,F (2070)-Petrelli,C (2150) ICCF 2008}) (8... h6 9. d3 (9. a3 Be7 10. d4 Re8 11. c4 dxc4 12. Bxc4 Bd6 13. Nc3 a6 14. Rc1 b5 15. Ba2 Qd7 16. Ne2 Rad8 17. Ng3 Bxg3 18. hxg3 Be6 19. Bxe6 Rxe6 20. Qc2 {1/2 (20) Cottarelli,F (2143)-Pitkänen,J (2214) ICCF 2007}) 9... Qe7 10. Nbd2 Ba3 11. Qc1 Bxb2 12. Qxb2 Rab8 13. d4 b5 14. Qc3 Qe6 15. a3 a6 16. Nh4 Bh7 17. g3 Rfc8 18. Ng2 Qd6 19. Nf4 Nd8 20. Nb3 {Welti,M (2050)-Eldridge,M (2279) ICCF 2010 0-1 (53)}) (8... Be7 9. d3 b5 10. Nbd2 Qd6 11. Nb3 a5 12. c4 bxc4 13. dxc4 a4 14. Nbd4 Nxd4 15. Nxd4 Bg6 16. Nb5 Qd7 17. cxd5 Rfb8 18. Ba3 Bxa3 19. Nxa3 Ra5 20. Bf3 {Silfver,T (1760)-Thys,H (1829) ICCF 2016 0-1 (26)}) 9. d3 (9. c4 dxc4 10. Bxc4 (10. a3 Bd6 11. Bxc4 Na5 12. Be2 c5 13. d3 Nc6 14. Nbd2 Rfd8 15. Re1 Ne5 16. e4 Bg4 17. Nxe5 Bxe2 18. Qxe2 Bxe5 19. Bxe5 Qxe5 20. Nc4 Qh5 21. f3 b6 {Fagerbekk,E (2193)-Sande,Ø (2148) ICCF 2013 1/2 (56)}) 10... Rfe8 11. Nc3 (11. a3 Bd6 12. Nc3 Ne5 13. Be2 Nxf3+ 14. Bxf3 c6 15. Re1 Rad8 16. Qc1 Ng4 17. g3 Ne5 18. Bg2 Nd3 19. Qc2 Be5 20. e4 Bg4 21. Rf1 Qc5 22. a4 Bd4 { Bernardara,E (1290)-Vitale,N (1976) ICCF 2020 0-1 (29)}) (11. d4 Rad8 12. a3 Bd6 13. Ba2 (13. Bd3 Bxd3 14. Qxd3 Qe4 15. Qc4 Qe6 16. Nbd2 Qxc4 17. Nxc4 Nd5 18. Rfc1 f5 19. g3 Re6 20. Rab1 Be7 21. Ba1 b6 22. h4 a6 {Belov,P-Yartsev,V (2202) ICCF 2010 1/2 (38)}) 13... Na5 14. Nbd2 c5 15. Qa4 Nc6 16. Bb1 Bxb1 17. Raxb1 Ne4 18. d5 Nxd2 19. Nxd2 Ne5 20. g3 b6 21. Rfd1 Qd7 22. Qc2 b5 {Kural,A (2264)-Mamonovas,V (2292) ICCF 2011 1/2 (39)}) 11... Rad8 12. Ne2 (12. h3 a6 13. d4 Na5 14. Be2 c5 15. a3 Bxc3 16. Bxc3 Nc6 17. Qa4 Nd5 18. Ba5 Rb8 19. dxc5 Nxe3 20. fxe3 Qxe3+ 21. Rf2 Re4 22. Qd1 {Semenov,V (2250)-Egoshin,G (2155) ICCF 2010 1/2 (32)}) 12... Bg4 13. Ned4 Nxd4 14. Bxd4 Ne4 15. Be2 c5 16. d3 cxd4 17. dxe4 dxe3 18. Qb3 Qxe4 19. Ng5 exf2+ 20. Rxf2 Qd4 {Boer,J (1792) -Faber,F (1977) ICCF 2017 0-1}) 9... Rfe8 10. a3 (10. Nbd2 Rad8 11. a3 (11. Rb1 a6 12. a3 Bc5 13. Re1 b5 14. Nb3 Bb6 15. Nbd4 Nxd4 16. Nxd4 Bxd4 17. Bxd4 c5 18. Bb2 Qd6 19. Bf3 d4 20. a4 b4 21. a5 Re6 22. exd4 cxd4 {Cottarelli,F (2185) -Krüger,J ICCF 2006 1/2 (34)}) 11... Ba5 (11... Bc5 12. c4 d4 13. e4 Bc8 14. Nb3 Nd7 15. Nfd2 Bb6 16. f4 a5 17. a4 Nb4 18. Ba3 c5 19. Kh1 Bc7 20. Bxb4 axb4 21. a5 g6 22. Bg4 f6 23. Qf3 {Nicklich,W (2293)-Krakovský,P (2213) ICCF 2010 1/ 2 (27)}) 12. Nb3 Bb6 13. a4 a5 (13... Na5 14. Ba3 Qd7 15. Nc5 Bxc5 16. Bxc5 b6 17. Bd4 Qd6 18. Bc3 Nc6 19. a5 b5 20. a6 Rb8 21. Bb2 h6 22. Qd2 Rb6 23. Rfb1 Reb8 24. Ra2 Bc8 25. Rba1 {Cottarelli,F (2143)-Mateka,P (2291) ICCF 2007 1/2 (40)}) 14. Qd2 Ng4 15. Qc3 f6 16. Ba3 Nb4 17. d4 c6 18. Rfb1 Qc7 19. Rb2 Be4 20. g3 Rb8 21. Nfd2 Bf5 {Szabo,A (2304)-Lakatos,S (2424) ICCF 2005 1/2 (39)}) 10... Bd6 11. Nbd2 Ne5 12. Nxe5 Bxe5 13. Bxe5 Qxe5 14. c4 c5 15. cxd5 Nxd5 16. Nc4 Qc7 17. Bf3 Be6 18. Qb3 Rab8 19. a4 {Welti,M (2050)-Schulz,R (2205) ICCF 2010 0-1 (51)}) (7... Bg4 8. h3 (8. O-O Bd6 9. h3 Bh5 10. Nc3 Bb4 11. d4 Bd6 12. Nb5 Be7 13. Qd2 Ne4 14. Qd1 a6 15. Nc3 Bb4 16. Nxe4 dxe4 17. Nd2 Bxe2 18. Qxe2 Qe7 19. c4 b6 {Wilson,N (1578)-Gibson,C (1498) ICCF 2015 1-0 (53)}) 8... Bh5 9. O-O Re8 10. d3 a5 11. Nbd2 a4 12. a3 Bxd2 13. Nxd2 Bxe2 14. Qxe2 Qd6 15. Qf3 Re6 16. Rfe1 Rae8 17. d4 Na5 18. Rec1 Qa6 19. Bc3 {Flewelling,H-Carrión Lava,J (2185) ICCF 2012 0-1 (33)}) (7... h6 8. O-O Be6 9. d3 (9. a3 Bd6 10. d4 Ne4 11. Ne5 (11. Nbd2 Qf6 12. Nxe4 dxe4 13. Nd2 Bf5 14. c4 Rad8 15. Rc1 Qg6 16. Kh1 Rfe8 17. c5 Be7 18. Ba1 Bc8 19. Qc2 Bg5 20. Rb1 Re7 21. Rfd1 Bh4 22. Kg1 Qf5 {Benassi,A (2293)-Macs,O (2111) ICCF 2012 1-0 (58)}) 11... Nxe5 12. dxe5 Bc5 13. Nc3 c6 14. Bd3 Nxc3 {1/2 (14) Belov,P-Nechaev,A (2174) ICCF 2010}) 9... Qe7 10. Nbd2 Rad8 11. Rb1 b6 12. c3 Bd6 {0-1 (12) Essen,W (1932)-Thierry,R (2253) ICCF 2009}) 8. O-O Bg4 (8... Qe7 9. Nc3 (9. d4 Bg4 10. c3 Bd6 11. c4 dxc4 12. Bxc4 Ne4 13. a3 Rad8 14. Bd3 Ng5 15. Nbd2 Nb8 16. Re1 c6 17. Be2 Nd7 18. Nxg5 Bxe2 19. Rxe2 Qxg5 20. e4 Qg6 {Marshall,I (2137)-Dzugan,P (2195) ICCF 2016 1/2 (37)}) (9. a3 Bd6 10. Bxf6 (10. d4 Na5 11. Nbd2 a6 12. Bc3 Nc6 13. Bb2 b5 14. a4 Rb8 15. axb5 axb5 16. c3 Ne4 17. Qb3 Bg4 18. Bd1 Be6 19. Be2 Qf6 20. Qc2 Bf5 21. Nxe4 Bxe4 {Hoch,H-Potrata,J (2250) ICCF 2006 1/2 (60)}) (10. c4 dxc4 11. Bxc4 a6 12. Nc3 Bg4 13. Be2 b5 14. d4 Na5 15. d5 Rac8 16. Qc2 c6 17. h3 Bxf3 18. Bxf3 cxd5 19. Qb1 Nc4 20. Nxd5 Nxd5 21. Bxd5 Nxb2 {Neumann,F (1622) -Mellbin,K (1790) ICCF 2010 0-1 (32)}) 10... Qxf6 11. Nc3 Ne7 12. Nb5 Nf5 13. d4 a6 14. Nxd6 Nxd6 15. Ne5 Qg5 16. Rb1 b5 17. a4 Ne4 18. Qe1 bxa4 19. f4 { Hoch,H-Joutsi,J (2129) ICCF 2006 1/2 (29)}) 9... a6 10. h3 Bd6 11. d3 Ne5 12. e4 Nxf3+ 13. Bxf3 Qe5 14. exd5 Qh2# {0-1 (14) Hasler,U (1683)-Denzin,M (2188) ICCF 2005}) (8... Bd6 9. d3 (9. h3 Ne4 10. Nc3 Nxc3 11. Bxc3 Bf5 12. Rb1 Rb8 13. Bb5 Qd7 14. Re1 a6 15. Bf1 Qe6 16. d3 Qh6 17. Bd2 Qf6 18. Rb3 Be6 19. d4 Bf5 20. Qc1 {Diener,R (1946)-Marshall,I (2022) ICCF 2017 0-1 (40)}) 9... b5 ( 9... Bg4 10. Nbd2 Qe7 11. c4 d4 12. Bxd4 Nxd4 13. Nxd4 Qe5 14. g3 Bxe2 15. Nxe2 Qf5 16. d4 c5 17. d5 b6 18. Nc3 Rad8 19. e4 Qh3 20. f4 Ng4 21. Qe2 {Welti,M (2050)-Bernal Caamaño,J (1829) ICCF 2010 1-0 (32)}) 10. Nbd2 Rb8 11. Rb1 Bf5 12. Nb3 Qe7 13. Nbd4 Nxd4 14. Nxd4 Bd7 15. Bf3 h6 16. Re1 Bb4 17. Rf1 Ba3 18. Bxa3 Qxa3 19. Nb3 Qd6 20. Re1 {Cottarelli,F (1894)-Kinchant,K (2209) ICCF 2010 0-1 (39)}) (8... h6 9. a3 Bd6 10. d4 Na5 11. Nbd2 Bf5 12. c4 c6 13. c5 Bc7 14. Qa4 b5 15. Qd1 Nc4 16. Bc3 Qe7 17. a4 Nxe3 18. fxe3 Qxe3+ 19. Kh1 Qxc3 20. axb5 {Silfver,T (1797)-Schaffarth,P ICCF 2016 0-1 (32)}) 9. d3 (9. h3 Bf5 10. a3 Be7 11. Nc3 a6 12. d4 Bd6 13. Bd3 Qd7 14. Nh4 Bxh3 15. gxh3 Qxh3 16. Nf3 Ng4 17. Nxd5 Re6 {0-1 (17) Hasidume,S (1849)-Saxena,A (2208) ICCF 2009}) 9... Nd7 (9... Qe7 10. Nbd2 (10. h3 Bf5 11. a3 (11. Nbd2 Ba3 12. Qc1 Bxb2 13. Qxb2 b6 14. c4 Nb4 15. cxd5 Bxd3 16. Bxd3 Nxd3 17. Qc3 Nc5 18. Qd4 Rad8 19. Nb3 Rxd5 20. Qc4 Nce4 21. Rac1 c5 {0-1 (21) Flewelling,H (1788)-Walsh,P (1674) ICCF 2016}) 11... Bd6 12. Nbd2 Na5 13. Re1 c6 14. e4 dxe4 15. dxe4 Bxe4 16. Bd3 Bxf3 17. Nxf3 Qd8 18. Ng5 Rxe1+ 19. Qxe1 b6 20. Rd1 Qe7 21. Qc3 h6 {Gierth,K (2200)-Reina Guerra, E (1902) ICCF 2010 1-0 (64)}) 10... Rad8 (10... h6 11. a3 Bd6 12. c4 Be6 13. d4 dxc4 14. Nxc4 Rad8 15. Qc2 Bd5 16. Nxd6 cxd6 17. Nd2 Rc8 18. Bf3 Nxd4 19. Qd1 { 1-0 (19) Welti,M (1921)-Valverde Toresano,A ICCF 2005}) 11. Rb1 (11. h3 Bxf3 12. Nxf3 (12. Bxf3 Ne5 13. Rb1 Bxd2 14. Bxe5 Qxe5 15. Qxd2 b6 16. c3 c6 17. a4 Qe6 18. Qe2 h6 19. Rfc1 Nh7 20. c4 dxc4 {Müller,D (2303)-Epinoux,J (2144) ICCF 2017 1/2 (50)}) 12... d4 13. Nxd4 Nxd4 14. Bxd4 Rxd4 15. exd4 Qxe2 16. Qxe2 Rxe2 17. Rab1 a5 18. a3 Bxa3 19. Rxb7 Rxc2 20. Ra1 Bf8 21. Rxa5 g6 22. Kf1 Bd6 {Rook,I (2111)-Dargan,P (2140) ICCF 2015 0-1 (42)}) (11. a3 Bd6 12. h3 Bxf3 13. Nxf3 Ne5 14. Qb1 Rb8 15. Nxe5 Bxe5 16. d4 Bd6 17. c4 c6 18. cxd5 cxd5 19. Bc3 Ne4 20. Bb4 b6 21. Qb2 a5 22. Bxd6 Qxd6 {Szabo,A (2304)-Antal,I (2275) ICCF 2005 1/2 (36)}) 11... b6 12. h3 Bf5 13. c4 d4 14. e4 Bc3 15. Qc1 Bxb2 16. Qxb2 {Frydendal,O (1788)-Bennett,P (2252) ICCF 2011 0-1 (26)}) (9... Qd6 10. Nbd2 Ba3 11. Qc1 Bxb2 12. Qxb2 Rab8 13. c4 d4 14. e4 a5 15. h3 Bxf3 16. Nxf3 Nd7 17. Nd2 Nc5 18. Nb3 Na4 19. Qc1 Nc3 20. Re1 a4 21. Nd2 {Flewelling,H-Dudeney,K ICCF 2011 0-1 (32)}) 10. Nbd2 Nb6 11. a4 a5 12. c3 Bd6 13. d4 h6 14. Bb5 Bf5 15. Qb3 Re7 16. Be2 Re8 17. Rfc1 Qe7 18. Ba3 {Avchinikov,V (2294)-Eastoe,L (2313) ICCF 2016 1/2 (43)}) 7. O-O (7. Nxd7 Bxd7 8. O-O Bd6 9. d3 b5 10. Bf3 c6 11. Re1 Be6 12. g3 Re8 13. Nd2 Be7 14. Nb3 c5 15. Nc1 Nd7 16. Rb1 a6 17. Ne2 Bf6 18. Nf4 Bxb2 {Taulien,H (2380)-Morrow,W (2240) ICCF 2011 1/2}) (7. Nf3 Qe7 8. O-O Re8 9. d4 Nb6 10. Nbd2 Na4 11. Qc1 c6 12. Rb1 Ne4 13. Nxe4 dxe4 14. Ne5 Nxb2 15. Qxb2 Bd6 16. Nc4 Bc7 17. Rfe1 {Godoy,M-Tavinski,M ICCF 2005 1/2 (54)}) 7... Nxe5 8. Bxe5 Qe7 9. Bb2 Bf5 10. d3 Rad8 11. Nd2 c6 12. Rb1 Nd7 13. Nf3 Nb6 14. Ba1 Bd6 15. Nd4 Bd7 16. Bg4 Qh4 17. h3 f5 {Whittaker,I (2085)-Rivas Maceda, J (2336) ICCF 2019 0-1 (57)}) 6... c6 (6... Nc6 7. Nxc6 bxc6 8. Bd3 d4 9. Bxd4 c5 10. Bxf6 Qxf6 11. Nc3 Bxc3 12. dxc3 Qxc3+ 13. Ke2 Re8 14. Rb1 Qe5 15. h3 g6 16. Qc2 Bd7 17. Rhe1 Qh2 18. Be4 {Stapinski,R (1777)-Kutsenko,A ICCF 2019 0-1 (63)}) 7. cxd5 (7. Be2 dxc4 8. Nxc4 Be6 9. O-O Nbd7 10. a4 Qe7 11. Qc2 Rfd8 12. Nc3 Nb6 13. Nxb6 axb6 14. d4 h5 15. Bd3 Rac8 16. Qb1 c5 17. dxc5 bxc5 18. Ne2 Nd5 {Stapinski,R (1731)-Nackas,H (1690) ICCF 2020 1-0 (31)}) 7... Nxd5 8. Qc2 Bd6 9. Nf3 Bg4 10. Nc3 Re8 11. Nxd5 cxd5 12. Bd3 Kh8 13. Bxh7 Nc6 14. Kf1 Bxf3 {Buss,M (2197)-O'Keefe,M (1497) ICCF 2019 1-0 (55)}) (3. Nc3 d4 4. Na4 e5 5. c3 dxc3 6. Nxc3 Bd6 7. a3 e4 8. Ng5 Bf5 9. Qc2 Bf4 10. Nf3 Bg6 11. Nh4 e3 12. Nxg6 exf2+ 13. Kxf2 hxg6 14. g3 Be5 {Moeckel,J (1661)-Kogoj,N ICCF 2014 0-1 (39)}) ( 3. d4 Bg4 4. h3 (4. a3 e6 5. Nbd2 a5 6. b5 Be7 7. e3 c6 8. Bd3 cxb5 9. Bxb5+ Nc6 10. c4 O-O 11. h3 Bf5 12. cxd5 Na7 13. Be2 exd5 14. O-O Qc7 15. Qb3 a4 { Domenche Redondo,F (1598)-Arteaga Hernández,L (1787) ICCF 2016 0-1 (29)}) 4... Bf5 5. a3 e6 6. g4 Bg6 7. Ne5 Nbd7 8. Nxg6 hxg6 9. Bg2 c6 10. Nc3 Bd6 11. g5 Nh5 12. e4 Qc7 13. Qg4 Nb6 14. O-O O-O {Walczak,A (2369)-Abramov,S ICCF 2006 0-1 (71)}) (3. g3 e5 4. Nxe5 Bxb4 5. Bg2 Qe7 6. f4 O-O 7. O-O Bd6 8. Bb2 Nbd7 9. d4 Nb6 10. Nc3 Bf5 11. a4 a5 12. Nb5 Ne4 13. g4 Bd7 14. Bxe4 dxe4 {Jozefini, L (2015)-Malushko,N (2184) ICCF 2013 0-1 (61)}) 3... Bf5 (3... e6 4. a3 Nbd7 ( 4... c5 5. bxc5 Bxc5 6. a4 (6. Be2 O-O 7. d4 Bd6 8. O-O Nc6 9. a4 Na5 10. Ba3 Ne4 11. c4 Bxa3 12. Nxa3 Nc3 13. Qc2 Nxe2+ 14. Qxe2 b6 15. cxd5 exd5 16. Qb2 a6 17. Qb4 Nc6 {Avchinikov,V (2367)-Doderer,H (2350) ICCF 2019 1/2 (56)}) (6. d4 Bd6 7. Bd3 O-O 8. Nbd2 Nbd7 9. O-O e5 10. dxe5 Nxe5 11. Bb2 Nxd3 12. cxd3 Nd7 13. Qc2 Nc5 14. Nb3 b6 15. Nbd4 Ba6 16. Rfd1 Qd7 17. a4 Rfc8 {Frenzel,L (2036) -Pérez Fernández,J (2427) ICCF 2008 0-1 (59)}) 6... O-O 7. d4 Bd6 (7... Be7 8. Bd3 Nc6 9. O-O b6 10. Ba3 Bb7 11. Qc1 Rc8 12. Qb2 Na5 13. Nfd2 Ne4 14. Bb4 Bxb4 15. Qxb4 h5 16. f3 Nd6 17. Na3 Nf5 18. Rae1 Qd7 19. Nb5 {Avchinikov,V (2367) -Frotscher,T (2364) ICCF 2019 1/2 (38)}) 8. Bd3 Nc6 9. O-O b6 10. Ba3 Bb7 11. Bxd6 Qxd6 12. Na3 Rfc8 13. Qb1 Nb4 14. Rc1 Nxd3 15. cxd3 Rxc1+ 16. Qxc1 { Avchinikov,V (2355)-Woznica,M (2369) ICCF 2019 1/2 (36)}) (4... a5 5. b5 Nbd7 ( 5... c5 6. Be2 Bd6 7. d3 Nbd7 8. Nbd2 O-O 9. c4 b6 10. Bb2 Bb7 11. h3 Qc7 12. O-O e5 13. cxd5 Nxd5 14. Nc4 f6 15. Qc2 Be7 16. Rfe1 Rad8 17. g3 {Walker,J (1789)-Tanner,A (1635) ICCF 2016 1-0 (34)}) 6. Bb2 (6. c4 Nb6 7. cxd5 exd5 8. Be2 Bd6 9. Qc2 O-O 10. Bb2 Re8 11. a4 Bg4 12. O-O Rc8 13. h3 Bh5 14. Bc3 Ne4 15. Bxa5 Nc4 16. Bc3 c5 17. d3 Nxe3 {Avchinikov,V (2303)-Garau,B (2362) ICCF 2017 1/2 (26)}) 6... Nb6 (6... Bd6 7. c4 (7. Be2 e5 8. d4 e4 9. Nfd2 Nb6 10. c4 dxc4 11. Nc3 O-O 12. Ncxe4 Nxe4 13. Nxe4 Re8 14. Bf3 Rb8 15. O-O Bf5 16. Nxd6 cxd6 17. d5 Qg5 18. Qd2 {Gierth,K (2204)-Daenen,S (2233) ICCF 2010 1/2 (50)}) 7... O-O (7... Nb6 8. d3 O-O (8... dxc4 9. dxc4 Qe7 10. Qc2 Nbd7 11. Nbd2 e5 12. Nh4 Nc5 13. Nf5 Bxf5 14. Qxf5 g6 15. Qc2 Nfd7 16. Be2 {Stapinski,R (1731) -Dimitrios,E ICCF 2020 0-1 (38)}) 9. Be2 Qe7 10. Nbd2 dxc4 11. dxc4 e5 12. Qc2 Nbd7 13. Nf1 e4 14. Nd4 Nc5 15. Ng3 g6 16. Nb3 Nxb3 17. Qxb3 Be5 18. O-O h5 19. Bxe5 {Gredescul,M-Haller,P ICCF 2007 1/2 (42)}) 8. d4 (8. d3 dxc4 9. dxc4 Qe7 10. Be2 e5 11. Nc3 Nc5 12. Qc2 e4 13. Nd2 Qe5 14. Ncxe4 Qe7 15. Bxf6 gxf6 16. Nxd6 Qxd6 17. Nf3 Qe7 18. Nd4 Qe4 19. Qxe4 Nxe4 {Visser,A (1987)-Gierth,K (2225) ICCF 2012 1/2 (45)}) 8... c5 (8... dxc4 9. Bxc4 Qe7 10. Nbd2 e5 11. dxe5 Nxe5 12. O-O Nxf3+ 13. Nxf3 Bf5 14. Qb3 a4 15. Qc3 Rfe8 16. Rfd1 Qd7 17. b6 cxb6 18. Qd4 Red8 19. Qxb6 Qe7 20. h3 {Fua,N-Svrsek,R (2205) ICCF 2008 1/2}) 9. Be2 (9. bxc6 bxc6 10. Nbd2 c5 11. Be2 Rb8 12. Rb1 Bb7 13. O-O Qc7 14. h3 Rfc8 15. Bc3 Be7 {Brunclík,V (1934)-Lagergren,H (1934) ICCF 2015 1/2 (52)}) 9... cxd4 10. exd4 (10. Qxd4 e5 11. Qh4 Be7 12. cxd5 Nxd5 13. Qg3 f6 14. O-O N7b6 15. Rd1 Be6 16. Nc3 Nxc3 17. Bxc3 Nd7 18. e4 Qe8 {Hoch,H (2106)-Ballow,J ICCF 2008 0-1 (41)}) 10... b6 11. O-O Bb7 12. Nbd2 Ne4 13. cxd5 Nxd2 14. Nxd2 Bxd5 15. g3 Rc8 16. Rc1 Qe7 17. Qa4 h5 18. Nc4 {Böhnke,H (2034)-Hengel,H ICCF 2010 1/2 (27)}) 7. a4 Bd6 8. c4 O-O 9. cxd5 Nfxd5 10. Be2 Qe7 11. O-O e5 12. Nc3 Nxc3 13. Bxc3 Nd5 14. Bb2 c6 15. Qb3 Rd8 16. Bc4 {Buss,M (2260)-Gulbis,H (2278) ICCF 2020 1/2 (40)}) (4... b6 5. Bb2 Be7 (5... Bd6 6. c4 O-O 7. Qc2 dxc4 8. e4 e5 9. Bxc4 c5 10. bxc5 bxc5 11. Nxe5 Bxe5 12. Bxe5 Nc6 13. Bxf6 Qxf6 14. Nc3 Qg5 15. Bd5 Ne5 16. Bxa8 {Hoch,H-Zielinski,M (2029) ICCF 2006 0-1 (40)}) 6. b5 (6. c4 c5 7. b5 (7. cxd5 exd5 8. Bb5+ Bd7 9. Bxd7+ Nbxd7 10. bxc5 bxc5 11. Nc3 O-O 12. O-O Rc8 13. d3 Qa5 14. Ne2 Rb8 15. Bc3 Qa6 16. Qc2 Rfc8 17. Rfb1 Bd6 18. h3 Ne8 {Müller,D (2303)-Rimsans,A (2120) ICCF 2017 1/2}) 7... O-O 8. Nc3 Bb7 9. Be2 d4 10. Na4 Qc7 11. exd4 cxd4 12. Bxd4 Nbd7 13. O-O Rad8 14. Bb2 Bxf3 15. Bxf3 Ne5 16. Bxe5 Qxe5 17. d3 {Ringsborg,A (2280)-Hansen,J (2318) ICCF 2020 0-1 (44)}) (6. Bb5+ c6 7. Be2 O-O 8. O-O Bb7 9. d4 a5 10. b5 cxb5 11. Bxb5 Ne4 12. Nbd2 Nd6 13. Bd3 b5 14. Ne5 Nc4 15. Qh5 f5 16. Bxc4 dxc4 17. Ndf3 Nd7 { Balañá Romero,R (1859)-Åberg,L (2078) ICCF 2015 0-1 (38)}) 6... O-O 7. Be2 a6 8. a4 Bb7 9. c4 dxc4 10. Bxc4 axb5 11. axb5 Rxa1 12. Bxa1 Qd6 13. O-O Ng4 14. g3 Qc5 15. Be2 Nd7 16. Nd4 {Avchinikov,V (2340)-Popov,E (2358) ICCF 2017 1/2 (38)}) (4... Bd6 5. c4 dxc4 6. Bxc4 O-O 7. Nc3 Nc6 8. O-O b6 9. d4 Bb7 10. Qc2 Ne7 11. e4 c5 12. dxc5 Bc7 13. Bg5 Ng4 14. Rad1 Qe8 15. Nb5 Bb8 16. Nd6 { Walker,J (1771)-Ryan,R (1813) ICCF 2016 1-0}) 5. c4 (5. Be2 a5 6. bxa5 Bd6 7. d4 e5 8. Bb2 Qe7 9. c4 dxc4 10. Nbd2 e4 11. Nh4 Nb8 12. g3 Nc6 13. Nxc4 Nxa5 14. Nxd6+ Qxd6 15. Bc3 Nc6 16. O-O O-O {Stapinski,R (1820)-Senzacqua,F (2025) ICCF 2018 0-1 (42)}) (5. d4 a5 6. c3 axb4 7. cxb4 Bxb4+ 8. Bd2 Bd6 9. Bd3 e5 10. dxe5 Nxe5 11. Bc3 Nxd3+ 12. Qxd3 O-O 13. O-O Ne4 14. Bb2 c6 15. Nbd2 Nc5 16. Qc2 b6 {Tago,S-Lagergren,H (2017) ICCF 2009 0-1}) 5... c6 6. Bb2 dxc4 (6... Bd6 7. d4 (7. Nc3 O-O 8. Be2 Qe7 9. c5 Bc7 10. d4 e5 11. O-O Re8 12. Re1 h5 13. h3 e4 14. Nd2 h4 15. b5 Nf8 16. bxc6 bxc6 17. Qa4 Bd7 18. Rab1 g5 {Edney,D (1985)-Rizvi,N (1799) ICCF 2017 1-0 (37)}) 7... O-O 8. Nbd2 Qe7 9. Be2 e5 10. cxd5 e4 11. Nh4 Nb6 (11... Nb8 12. dxc6 Nxc6 13. g3 Bh3 14. g4 g6 15. Rg1 Nd5 16. Ng2 {Böhnke,H (2164)-Douglas,S ICCF 2005 1/2 (28)}) 12. dxc6 bxc6 13. g3 a5 14. bxa5 Rxa5 15. Qb3 Na4 16. Nc4 Ra8 17. O-O Be6 18. Rfb1 {Kural,A (2001) -Pascoal,J ICCF 2007 1-0 (81)}) (6... Be7 7. d4 dxc4 8. Bxc4 a5 9. Qb3 Nb6 10. Nbd2 axb4 11. O-O bxa3 12. Bxa3 Rxa3 13. Rxa3 Bxa3 14. Qxa3 Qe7 15. Qb3 Nbd7 16. Ra1 O-O 17. Qb2 Rd8 18. Be2 {Kural,A (2349)-Semov,D (2379) ICCF 2014 1/2 (40)}) 7. Bxc4 b5 (7... Nb6 8. Bb3 a5 9. bxa5 Rxa5 10. O-O Bd6 11. d4 Nbd7 12. Nbd2 Rh5 13. e4 Bf4 14. e5 Nd5 15. g3 Bh6 16. Ne4 O-O 17. a4 f5 18. Nd6 b6 19. Qd3 {Leijen,P (2158)-Rotte,P (1780) ICCF 2020 1-0 (26)}) 8. Be2 a5 9. bxa5 (9. Qb3 axb4 10. axb4 Rxa1 11. Bxa1 Bd6 12. O-O O-O 13. Rc1 Bb7 14. Nd4 Qb8 15. h3 Rc8 16. Nc3 Bf8 17. Nc2 Qd6 18. d4 Nb6 19. Bd3 Ra8 20. e4 Qf4 {Kural,A (2140) -Bester,B (2426) ICCF 2009 1/2 (35)}) 9... Qxa5 10. Nc3 (10. O-O Be7 11. Qc2 Bb7 12. Nd4 Nc5 13. a4 b4 14. d3 O-O 15. Rc1 Rfc8 16. Nd2 Qd8 17. Nc4 Nfd7 18. Nf3 Ba6 19. Nfd2 Bf8 20. d4 Nb7 21. Qd1 Nb6 {Avchinikov,V (2294)-Schmidt,H (2300) ICCF 2016 1/2 (64)}) 10... Be7 11. d4 O-O 12. O-O h6 13. Nd2 Bb7 14. Nb3 Qa7 15. Qc2 {Avchinikov,V (2334)-Brodt,A (2368) ICCF 2018 1/2 (45)}) (3... Bg4 4. Bb2 (4. a3 e5 5. c4 (5. h3 Bh5 6. Be2 Bd6 7. d4 e4 8. Ne5 Bxe2 9. Qxe2 a5 10. Qb5+ Nbd7 11. bxa5 Qc8 12. Bd2 O-O 13. Nxd7 Qxd7 14. Qb3 Rfb8 15. O-O b6 16. axb6 Rxb6 {Jokipii,G (1279)-Perez,R ICCF 2014 0-1 (25)}) 5... a5 6. Bb2 Nbd7 7. Qb3 Bxf3 8. gxf3 d4 9. Bg2 a4 10. Qd1 c5 11. O-O Bd6 12. f4 O-O 13. Bxb7 Rb8 14. Bg2 Qc7 15. h3 Rfe8 {Taulien,H (2380)-Dunlop,G (2132) ICCF 2011 1/ 2 (33)}) (4. h3 Bxf3 5. Qxf3 e6 6. a3 Nbd7 7. d4 c6 8. c4 Bd6 9. c5 Bb8 10. Nd2 e5 11. Bb2 O-O 12. Qd1 Re8 13. Be2 exd4 14. Bxd4 Be5 15. Bxe5 Nxe5 {Martinson, R (2086)-Oseledets,K (2156) ICCF 2009 1/2 (25)}) 4... e6 (4... Nbd7 5. Be2 c6 6. a4 e6 7. b5 a6 8. bxa6 bxa6 9. h3 Bh5 10. O-O Bd6 11. d4 O-O 12. Nbd2 Rb8 13. Ra2 a5 14. Ne5 Bxe2 15. Qxe2 Qc7 16. Nxd7 {Avchinikov,V (2294)-Wieringen,C (2290) ICCF 2016 1/2 (30)}) 5. a3 (5. b5 Bd6 6. a4 Nbd7 7. Be2 a6 8. c4 O-O 9. cxd5 Nxd5 10. Nc3 Nb4 11. O-O Rc8 12. Na2 a5 13. h3 Nxa2 14. hxg4 Nb4 15. g3 Nf6 16. Nd4 c6 {Buss,M (2252)-Reed,A (2256) ICCF 2020 (39)}) 5... Be7 (5... a5 6. b5 Nbd7 7. Be2 h6 8. O-O Bd6 9. c4 dxc4 10. Bxc4 O-O 11. Be2 c6 12. bxc6 bxc6 13. h3 Rb8 14. Qc2 Bxf3 15. Bxf3 Qb6 16. Bxf6 Nxf6 17. d3 {Kural,A (2001) -Gutiérrez Dopino,J (2148) ICCF 2007 1/2}) (5... c5 6. c4 Nc6 7. cxd5 exd5 8. b5 Na5 9. Be2 g6 10. h3 Be6 11. Ng5 Bf5 12. g4 Bc8 13. Nf3 Bg7 14. g5 Nh5 15. Bxg7 Nxg7 16. Nc3 {Frenzel,L (2009)-Voveris,S (2388) ICCF 2017 0-1 (49)}) 6. c4 (6. h3 Bxf3 7. Qxf3 c6 8. c4 O-O 9. Be2 Nbd7 10. O-O Bd6 11. Rc1 Qe7 12. Bf1 dxc4 13. Bxc4 Ne5 14. Qe2 Rfd8 15. d4 Nxc4 16. Qxc4 Nd5 17. Nc3 Rac8 { Avchinikov,V (2294)-Caliò,M (2330) ICCF 2016 1/2 (37)}) 6... O-O 7. cxd5 (7. h3 Bxf3 8. Qxf3 Nbd7 9. Be2 (9. cxd5 exd5 10. Be2 c6 11. O-O Re8 12. d3 Bd6 13. Rc1 Qe7 14. g3 a6 15. Bf1 Be5 16. Bxe5 Nxe5 17. Qd1 a5 18. d4 Nc4 19. Bxc4 dxc4 20. Rxc4 Qd6 {Burg,B-Malashenkov,A (2339) ICCF 2014 0-1 (43)}) 9... a5 10. b5 c6 11. O-O Rc8 12. Ra2 Nc5 13. bxc6 bxc6 14. d4 Nb3 15. Rd1 a4 16. Bd3 g6 17. Bc3 c5 18. dxc5 Nxc5 {Avchinikov,V (2303)-Hengl,C (2390) ICCF 2017 1/2 (38)}) 7... exd5 8. Be2 c6 9. O-O (9. h3 Bf5 10. O-O h6 11. d3 a5 12. b5 a4 13. bxc6 Nxc6 14. Nd4 Bg6 15. Nd2 Qa5 16. N2f3 Nd7 17. Rc1 Rfc8 18. Rc2 Bf8 19. Nxc6 bxc6 20. Nh4 Bh7 {Avchinikov,V (2355)-Dorer,M (2388) ICCF 2019 1/2 (39)}) 9... Nbd7 10. h3 Bh5 11. Nc3 Re8 12. Nh4 Bg6 13. b5 c5 14. Nxg6 hxg6 15. a4 { Avchinikov,V (2367)-Rau,J (2351) ICCF 2019 1/2 (57)}) (3... Nbd7 4. Bb2 e5 5. Nxe5 Bxb4 (5... Nxe5 6. Bxe5 Bxb4 7. Qf3 c6 8. Bxf6 gxf6 9. Nc3 h5 10. Bd3 Bg4 11. Qg3 Qe7 12. Ne2 O-O-O 13. Rb1 Bd6 14. Qh4 Bc7 15. c3 c5 16. f3 Bd7 17. Kf2 {Avchinikov,V (2334)-Voveris,G (2375) ICCF 2018 1/2 (35)}) 6. Nxd7 (6. Nf3 Nb6 (6... O-O 7. a3 Ba5 8. Be2 Re8 9. O-O c6 10. d4 Nb6 11. Nbd2 Na4 12. Qc1 Bg4 13. Rb1 Nxb2 14. Rxb2 Qe7 15. Rb3 b6 16. Bd3 c5 17. Bb5 Red8 18. Ne5 {Gallach Pérez,Y-Miguel de Frutos,V ICCF 2006 0-1}) 7. Be2 (7. a4 a5 8. Bb5+ c6 9. Be2 O-O 10. O-O Bf5 11. Be5 Re8 12. d3 Nfd7 13. Bg3 Be7 14. Nd4 Bg6 15. Nb3 Bf8 16. Qc1 Qf6 {Buczinski,H (2041)-Aglietti,G ICCF 2020 1/2 (94)}) 7... O-O 8. O-O Bd7 9. Be5 (9. Ne5 Na4 10. Bd4 Bd6 11. Nxd7 Nxd7 12. c4 c5 13. Bxg7 Kxg7 14. Qxa4 Be5 15. Nc3 d4 16. exd4 cxd4 17. Nd5 d3 18. Bxd3 Bxa1 19. Rxa1 {Marconi,R (1998)-Gideon,D ICCF 2019 1-0 (36)}) (9. d3 Na4 10. Be5 Re8 11. c3 Ba5 12. Qb3 a6 13. d4 b5 14. Bxf6 Qxf6 15. Qxd5 Bg4 16. Bd3 c5 17. Qg5 Bxf3 18. Qxf6 gxf6 19. gxf3 Bxc3 20. Nxc3 Nxc3 {Stapinski,R (1878)-Admakin,V ICCF 2017 1-0}) (9. a3 Ba5 10. Nc3 Ne4 11. Nxe4 dxe4 12. Ne5 Be6 13. d3 Na4 14. Bc1 Bc3 15. Rb1 Bxe5 16. Rxb7 Bd5 17. Rb4 {Neumann,F (1522)-Wijnen,T ICCF 2020 0-1 (31)}) 9... Re8 10. a4 Nc4 11. c3 Bf8 12. d4 Bf5 13. Bxf6 Qxf6 14. Nbd2 Nxd2 15. Nxd2 c5 16. Qb3 Red8 17. Bf3 Qc6 {Avchinikov,V (2294)-Hernández Molina,D (2346) ICCF 2016 1/2 (25)}) 6... Bxd7 7. Be2 h5 8. c4 dxc4 9. Bxc4 Qe7 10. a3 Bd6 11. Nc3 c6 12. a4 Rh6 13. f3 O-O-O 14. Qc2 h4 15. O-O {Avchinikov,V (2367)-Ackermann,E (2360) ICCF 2019 1/2 (43)}) 4. c4 (4. Be2 e6 (4... c6 5. a4 h6 6. c4 e6 7. Qb3 Bd6 8. c5 Bc7 9. d4 Bg4 10. Nbd2 Nbd7 11. Bb2 Ne4 12. Nxe4 dxe4 13. Nd2 Bxe2 14. Kxe2 Qh4 15. h3 O-O 16. Rag1 {Avchinikov,V (2334)-Caliò,M (2351) ICCF 2018 1/2 (26)}) 5. a3 c5 (5... h6 6. O-O Be7 7. c4 c6 8. d4 O-O 9. Qb3 dxc4 10. Bxc4 Nbd7 11. Bd2 Qc7 (11... Bd6 12. Be2 Bc7 13. Bc3 Ne4 14. Nbd2 Ndf6 15. Rfc1 a6 16. Nc4 Nxc3 17. Qxc3 Qe7 18. Bd3 Bxd3 19. Qxd3 a5 20. bxa5 Bxa5 21. Rab1 Bc7 22. Rb3 Rfb8 23. Qb1 {Avchinikov,V (2334)-Mirkowski,P (2408) ICCF 2018 1/2 (53) }) 12. Rc1 Bd6 13. Be2 Rad8 14. h3 e5 15. Be1 a6 16. a4 Rfe8 17. Na3 { Avchinikov,V (2334)-Bolz,J (2345) ICCF 2018 1/2 (31)}) 6. Nh4 cxb4 7. Nxf5 exf5 8. Bb2 Nc6 9. O-O Be7 10. axb4 Nxb4 11. Bxf6 Bxf6 12. c3 Nc6 13. Bf3 Qd7 14. Qb3 Rd8 15. Na3 O-O {Stefanov,P (2285)-Gavrijski,D (2180) ICCF 2020 1/2 (37)}) (4. Bd3 Bxd3 5. cxd3 e6 6. Qb3 Bd6 7. O-O O-O 8. Nc3 c6 9. d4 Nbd7 10. d3 Re8 11. h3 e5 12. b5 e4 13. dxe4 dxe4 14. Nd2 c5 15. Ba3 cxd4 {Guberna,A (2375) -Dzhafarov,K (2255) ICCF 2014 1/2 (29)}) 4... e6 5. a3 c6 6. Bb2 Nbd7 (6... Be7 7. Be2 (7. Nc3 Nbd7 (7... O-O 8. Be2 dxc4 9. Bxc4 b5 10. Be2 a5 11. bxa5 Rxa5 12. O-O h6 13. Nd4 Bh7 14. Nb3 Ra7 15. d3 Nbd7 16. a4 b4 17. Nb1 c5 18. a5 Qb8 19. N1d2 {Schmidt,K (2148)-Balutescu,M (2337) ICCF 2014 1/2 (54)}) 8. cxd5 (8. Be2 dxc4 9. Bxc4 O-O 10. O-O Rc8 11. Be2 h6 12. d4 a5 13. Qb3 b5 14. Rfc1 Re8 15. bxa5 Qxa5 16. a4 b4 17. Nb1 c5 18. Nbd2 Be4 19. Nxe4 Nxe4 {Kural,A (2351) -Sadler,C (2324) ICCF 2014 1/2 (25)}) 8... exd5 (8... cxd5 9. Be2 h6 10. O-O O-O 11. Nd4 Bh7 12. Nb3 Ne5 13. d3 Nc6 14. Rc1 a5 15. b5 Nb8 16. d4 Nbd7 17. Nc5 Nxc5 18. dxc5 Bxc5 19. Nxd5 b6 20. Nxf6+ {Kögeler,A (2185)-Bes,R (1844) ICCF 2020 (26)}) 9. Be2 h6 10. Nd4 Bh7 11. Nb3 O-O 12. O-O (12. Rc1 Rc8 13. O-O b6 14. Re1 Re8 15. f4 Bf8 16. Ba6 Rc7 17. Nd4 b5 18. Ba1 Nb8 {Fagerbekk,E (2215)-Vegjeleki,A (2269) ICCF 2013 1/2}) 12... Bd6 13. Rc1 Rc8 14. Na4 b6 15. f4 c5 16. Bxf6 Qxf6 17. bxc5 bxc5 18. Naxc5 Nxc5 {Roig García,J (1783)-Legrand, M ICCF 2014 0-1 (31)}) (7. c5 O-O 8. d4 b6 9. Nbd2 h6 10. Be2 Nbd7 11. Ba6 Rb8 12. Nb3 Ne4 13. O-O Bf6 14. Ra2 Bg6 15. Nfd2 e5 16. Nxe4 Bxe4 17. Qd2 bxc5 18. dxc5 {Kural,A (2397)-Au Cardero,R (2307) ICCF 2018 1-0 (73)}) 7... O-O 8. O-O h6 9. Nd4 Bg6 10. f4 Qc8 11. Nc3 a5 12. b5 c5 13. Nf3 d4 14. Na4 d3 15. Nb6 Qd8 16. Nxa8 dxe2 17. Qxe2 Bd3 18. Qf2 {Thomsen,J-Palacios,E ICCF 2011 0-1 (31)}) ( 6... h6 7. c5 Be7 8. d4 O-O 9. Bd3 a5 10. Bxf5 exf5 11. O-O axb4 12. axb4 Rxa1 13. Bxa1 g6 14. Qb3 Nbd7 15. b5 Qa5 16. Nc3 Ra8 17. Bb2 Qc7 18. Ra1 { Avchinikov,V (2303)-Lloyd,G (2269) ICCF 2017 1/2}) 7. c5 (7. Be2 Bd6 (7... h6 8. O-O Bd6 9. c5 Bc7 10. d4 (10. d3 O-O 11. Nbd2 e5 12. Qc2 a5 13. h3 Bg6 14. e4 Re8 15. Rfe1 Rb8 16. Bf1 axb4 17. axb4 {Skerlík,S (2279)-Markus,R (2170) ICCF 2015 0-1 (77)}) 10... O-O 11. Nbd2 Ne4 12. a4 Qf6 13. Rc1 Nxd2 14. Qxd2 Be4 15. b5 Rfc8 16. Ne1 Qg6 17. f3 Bf5 18. a5 cxb5 19. Bxb5 {Skerlík,S (2245) -Scott,R (1605) ICCF 2020 1-0 (57)}) (7... dxc4 8. Bxc4 Bd6 9. O-O O-O 10. Be2 a5 11. b5 cxb5 12. Bxb5 Nc5 13. d4 Nce4 14. Nbd2 Nxd2 15. Nxd2 Rc8 16. Rc1 Rxc1 17. Qxc1 Qb8 18. Nf3 Rc8 {Skerlík,S (2241)-Tassone,R (2162) ICCF 2017 1/2}) 8. Nc3 O-O 9. c5 Bc7 10. Nh4 Bg6 11. O-O e5 12. Nxg6 hxg6 13. d3 a5 14. Qc2 Qe7 15. g3 Qe6 16. Kg2 b6 17. cxb6 Bxb6 18. Na4 axb4 {Leijen,P (2158)-Kappelhof,W (2338) ICCF 2020 1/2 (71)}) (7. Nc3 Bd6 8. c5 Be7 9. d4 O-O 10. Bd3 Bg4 11. h3 Bh5 12. O-O e5 13. g4 Nxg4 14. hxg4 Bxg4 15. dxe5 Nxe5 16. Be2 Bh3 17. Nxe5 Bxf1 18. Kxf1 Qc7 {Braak,J (1934)-Essen,W (1902) ICCF 2010 1-0}) (7. d3 Bd6 8. Nc3 O-O 9. Be2 dxc4 10. dxc4 Qe7 11. O-O Rfd8 12. c5 Bc7 13. Nh4 Nxc5 14. Nxf5 exf5 15. Qc2 Nce4 16. Nxe4 Nxe4 17. Rad1 Be5 18. Bf3 Ng5 {Visser,A (1849)-Marx, P (1900) ICCF 2019 0-1 (29)}) (7. d4 Be7 8. Nbd2 O-O 9. Be2 h6 10. O-O a5 11. Qb3 Qc7 12. Rfc1 Rfc8 13. h3 Qd8 14. c5 b6 15. Qd1 bxc5 16. bxc5 Rcb8 17. Bc3 Qc7 18. a4 Bg6 {Ilzig,G (2265)-Rotaru,I (2245) ICCF 2017 1/2 (30)}) (7. h3 h6 8. c5 Be7 9. d4 b6 10. Bd3 Qc7 11. Nc3 O-O 12. O-O bxc5 13. bxc5 Rfb8 14. Bxf5 exf5 15. Qc2 Ne4 16. Rfb1 Bf6 17. Ne2 Qa5 18. Bc3 Nxc3 {Avchinikov,V-Bär,L (2237) ICCF 2014 1/2 (31)}) 7... Be7 8. d4 (8. Be2 O-O 9. O-O h6 10. Nd4 Bg6 11. f4 Re8 12. d3 Qb8 13. Nd2 e5 14. fxe5 Qxe5 15. Rf2 Qxe3 16. Nf1 Qe5 17. Qc2 Qc7 18. Ng3 a5 19. Ndf5 Bf8 {Buczinski,H (1988)-Reed,A (2071) ICCF 2018 0-1 (48)}) 8... O-O 9. Nbd2 (9. Bd3 Bxd3 10. Qxd3 a5 11. O-O axb4 12. axb4 Rxa1 13. Bxa1 Qc7 14. Nbd2 b5 15. Nb3 {1/2 (15) Omar,G (1747)-Rezny,D ICCF 2006}) 9... Qc7 10. Nb3 (10. Be2 h6 11. Nb3 (11. O-O b6 12. h3 Qb7 13. Bc3 Rfb8 14. Qc1 a5 15. cxb6 axb4 16. Bxb4 Bxb4 17. axb4 {Skerlík,S (2279)-Hechl,G (2184) ICCF 2015 1/2}) (11. a4 b6 12. Rc1 Qb7 13. Ba3 bxc5 14. dxc5 a6 15. Nd4 Bh7 16. N4b3 Bd8 17. O-O Re8 18. f4 Bc7 19. Ra1 Nf8 20. Ra2 Ng6 21. Qe1 Ne7 22. Nf3 Nf5 { Kural,A (2354)-Ozturk,E (2067) ICCF 2014 1/2 (35)}) 11... b6 12. O-O Ne4 13. Nfd2 Rfe8 14. Rc1 Nxd2 15. Qxd2 bxc5 16. dxc5 e5 17. Bd3 Bxd3 18. Qxd3 a6 19. Rb1 e4 20. Qe2 Bf8 21. Rfc1 Re6 {Avchinikov,V (2303)-Celestini,M (2235) ICCF 2017 1/2 (51)}) 10... Rfb8 (10... b6 11. Ba6 h6 12. O-O Ne4 13. Rc1 Bf6 14. Nfd2 Nxd2 15. Qxd2 Rfe8 16. Rfd1 Bg4 17. Re1 Bf5 18. a4 Bg6 19. Red1 Bh5 20. f3 Bg6 21. Bc3 Bg5 22. Qf2 {Avchinikov,V (2294)-Arbrile,G (2362) ICCF 2016 1-0 (36)}) 11. Be2 b6 12. Ba6 Ne4 {Avchinikov,V (2294)-Elyoseph,H (2373) ICCF 2016 1/2 (28)}) (1. d3 d5 (1... e5 2. Nf3 (2. b3 d5 3. Ba3 Bxa3 4. Nxa3 Qe7 5. Nb1 Nf6 6. Qd2 O-O 7. Qc3 c5 8. Nd2 Nc6 9. Ngf3 e4 10. dxe4 dxe4 11. Ng1 Nd5 12. Qg3 Qf6 13. Rc1 Qb2 {Bautista,E-Schelberg,M (1716) ICCF 2013 0-1}) 2... Nc6 ( 2... c6 3. Nxe5 Qa5+ 4. Nd2 Qxe5 5. e4 Na6 6. d4 Qa5 {0-1 (6) Rivenburg,J (1741)-Johnston,P ICCF 2014}) 3. e3 (3. Be3 Nf6 4. c3 Bd6 5. g3 O-O 6. Nbd2 h6 7. Nc4 Qe7 8. Qd2 Ng4 9. Bh3 Nxe3 10. Qxe3 b5 11. Ncd2 b4 12. Nc4 bxc3 13. bxc3 Ba6 14. Nxd6 Qxd6 {Vries,W-Pope,P (1668) ICCF 2014 1-0 (41)}) 3... d5 4. d4 e4 (4... exd4 5. exd4 Nf6 6. Bd3 Bd6 7. O-O O-O 8. c3 Bg4 9. Bg5 h6 10. Bh4 Bf4 11. Nbd2 Qd6 12. Qc2 Rae8 13. Rfe1 Rxe1+ 14. Rxe1 Re8 15. Bxf6 Rxe1+ 16. Nxe1 { Satskov,V-Morales Viscaya,J ICCF 2018 1/2 (67)}) 5. Nfd2 Nf6 6. c4 Bb4 7. a3 ( 7. Nc3 Bg4 8. Qc2 O-O 9. a3 Bxc3 10. bxc3 b6 11. h3 Bh5 12. cxd5 Qxd5 13. c4 Qg5 14. Bb2 Rfe8 15. g4 Bg6 16. Be2 {1-0 (16) Satskov,V-Romero Díaz,C ICCF 2018 }) 7... Bxd2+ 8. Bxd2 Be6 9. cxd5 Bxd5 10. Be2 O-O 11. Nc3 a6 12. Nxd5 Qxd5 13. Rc1 {Satskov,V-Baller,M ICCF 2018 1-0 (30)}) (1... g6 2. Nc3 (2. Bd2 Bg7 3. c3 e5 4. e4 Nc6 5. Nf3 d6 6. d4 Bd7 7. Bg5 Nf6 8. dxe5 dxe5 9. Bb5 O-O 10. Nbd2 h6 11. Bh4 g5 12. Bg3 Qe7 13. Nc4 Nxe4 {Rojas,E-Valenzuela Martínez,H ICCF 2020 1-0}) (2. e3 Bg7 3. c3 d5 4. Nf3 Nh6 5. d4 O-O 6. Bd3 f5 7. O-O c6 8. Na3 Nd7 9. b3 e5 10. Rb1 e4 11. Bc4 exf3 12. Qxf3 dxc4 13. bxc4 Nf6 {Ridder, B-Ainsborough,G (1458) ICCF 2018 0-1}) (2. Nf3 d6 3. e3 e5 4. Be2 Nc6 5. c4 Bf5 6. d4 e4 7. Nfd2 Nf6 8. g4 Be6 9. d5 Nxd5 10. cxd5 Bxd5 11. Nc3 Be6 12. Ndxe4 Bg7 13. h4 O-O {Satskov,V-Putra,M ICCF 2017 1-0 (29)}) 2... Bg7 3. Bg5 (3. g3 c5 4. f4 d5 5. e4 dxe4 6. dxe4 Bd7 7. Qd2 Nc6 8. Bg2 Nh6 9. Nge2 O-O 10. O-O Nd4 11. e5 Bc6 12. Bxc6 Nxc6 13. Ne4 Qc8 14. c3 Rd8 {Kapfenstein,A (1790) -Guadagno,J ICCF 2007 0-1 (29)}) (3. Nf3 d5 4. e3 e5 5. g3 Ne7 6. Bg2 O-O 7. O-O c5 8. d4 e4 9. Ne1 b6 10. dxc5 bxc5 11. Na4 Qa5 12. Nc3 Bxc3 13. bxc3 Qxc3 14. Bd2 Qe5 {Brodie,P (1736)-Haller,P (2193) ICCF 2019 0-1}) 3... c6 4. e4 Qa5 5. Bd2 Qb6 6. b3 Na6 7. Rb1 e6 8. a3 Bd4 9. Nh3 e5 10. Be2 Bxc3 11. Bxc3 d6 12. Ng5 Qd8 13. Bd2 {Chugg,M (1495)-Armstrong,J (1599) ICCF 2015 0-1 (50)}) (1... Nf6 2. Bf4 (2. g3 c5 3. Bg2 g6 4. Nd2 Bg7 5. e4 d6 6. f4 Bg4 7. Bf3 Be6 8. g4 Nc6 9. f5 Bc8 10. Nb3 h5 11. h3 hxg4 12. hxg4 Rxh1 13. Bxh1 a5 {Wilshusen,H (1434)-Harris,S (1856) ICCF 2018 0-1 (34)}) (2. Nd2 g6 3. e4 Nc6 4. Ngf3 e5 5. c3 Bg7 6. Be2 O-O 7. O-O d5 8. b4 a6 9. a4 Bg4 10. Ba3 b5 11. h3 Bd7 12. axb5 axb5 13. Qc2 Qe7 {Jooste,M (1838)-Vila Nova,R (1663) ICCF 2006 0-1 (41)}) (2. b3 e5 3. c4 d5 4. Nd2 Nc6 5. g3 Be6 6. Bg2 Be7 7. Bb2 O-O 8. Ngf3 Nd7 9. O-O Bf6 10. Re1 Re8 11. a3 a5 12. Rc1 Nc5 13. Nxe5 Nxe5 {Cerina,A (1827)-Burridge, R (1834) ICCF 2011 1/2 (25)}) (2. Bg5 e6 3. Bxf6 gxf6 4. e4 b6 5. Nf3 Bb7 6. Be2 Nc6 7. O-O Ne7 8. c4 f5 9. Nbd2 fxe4 10. dxe4 Ng6 11. Nd4 Bg7 12. Bh5 Bxd4 13. Rb1 Qf6 {Vaessen,J (1656)-Bes,R (1898) ICCF 2017 0-1 (35)}) 2... d5 (2... d6 3. c4 e5 4. Bd2 Be7 5. e4 Nc6 6. Nc3 O-O 7. Nf3 Bg4 8. Be2 Nb4 9. Bc1 Qd7 10. a3 Nc6 11. h3 Bxf3 12. Bxf3 Nd4 13. O-O Rad8 14. a4 {Ikegami,O (2106) -Horie,T (1857) ICCF 2010 1/2 (36)}) 3. Nc3 (3. g3 g6 4. Bg2 Bg7 5. Nf3 c5 6. O-O O-O 7. Nc3 d4 8. Nb1 Nd5 9. Bd2 Nc6 10. Ng5 e5 11. c4 Nf6 12. Qb3 Qe7 13. Ne4 Nxe4 14. Bxe4 Bh3 {Rheindt,S (1762)-Dmitrenko,N ICCF 2016 0-1 (33)}) 3... d4 4. Nb5 e5 5. Bxe5 Bb4+ 6. c3 Bd6 7. Bxd4 O-O 8. Qc2 Be7 9. c4 a6 10. Na3 Nc6 11. Qc3 b6 12. Nc2 Nxd4 13. e3 {Miedema,H (1320)-Blanchard,A (1265) ICCF 2015 0-1 (40)}) (1... b5 2. c3 (2. Nf3 Bb7 3. e4 a6 4. g3 g6 5. Bg2 Bg7 6. O-O d6 7. Nc3 Nd7 8. Qe2 Ngf6 9. a3 c5 10. Bf4 e5 11. Bd2 O-O 12. h3 d5 13. exd5 Nxd5 { Alejos,P (2117)-Kurpnieks,V (2159) ICCF 2015 1/2 (35)}) 2... e5 3. e4 Bb7 4. Be2 d5 5. exd5 Bxd5 6. Bf3 Nc6 7. Bxd5 Qxd5 8. Qf3 Nf6 9. Qxd5 Nxd5 10. Nf3 f6 11. O-O O-O-O 12. Rd1 b4 13. Bd2 {Anderson,J (1583)-Stapinski,R (2005) ICCF 2007 0-1 (30)}) (1... c5 2. b3 (2. Be3 e6 3. g4 d5 4. Nf3 Nc6 5. Bg2 e5 6. h3 f5 7. g5 Bd6 8. O-O h6 9. g6 Qf6 10. Nc3 d4 11. Nd5 Qxg6 12. Bd2 e4 13. dxe4 fxe4 {Vaessen,J (1091)-Engels,J (1914) ICCF 2020 0-1}) (2. c4 Nc6 3. Nf3 e6 4. e4 Nf6 5. Be3 d6 6. Nc3 g6 7. d4 Qa5 8. Qb3 cxd4 9. Bxd4 Be7 10. Bd3 Nxd4 11. Nxd4 O-O 12. O-O Rd8 13. Ndb5 a6 {Rivera,J (1448)-Whittle,P (1289) ICCF 2018 1/ 2 (38)}) 2... d5 3. e3 e5 4. h3 Nc6 5. Ne2 Nf6 6. Nd2 b6 7. a3 Bb7 8. g3 Qd6 9. Bg2 Be7 10. Bb2 O-O 11. g4 g6 12. Ng3 Rad8 13. Qe2 {Soldano,G (2251) -Pradeilles,G ICCF 2018 0-1}) (1... Nc6 2. Nd2 d5 3. g3 Nf6 4. Bg2 e6 5. Nh3 h6 6. O-O Bd6 7. Nf3 g5 8. Re1 {1-0 (8) Sanchez Aguirregomezcorta,X-De León López, A (1378) ICCF 2016}) (1... h6 2. e4 g5 3. f4 Bg7 4. Na3 d5 5. h4 dxe4 6. d4 Qxd4 7. Qxd4 Bxd4 8. hxg5 hxg5 9. Rxh8 Bxh8 10. fxg5 Bg4 11. Nc4 Nc6 12. Ne3 Bh5 13. Bb5 {Ratzel,W-Smith,J ICCF 2012 0-1 (25)}) 2. g3 (2. e3 e5 3. h3 (3. g3 Nc6 4. b3 Be7 5. Bg2 Be6 6. Bb2 Qd7 7. Nf3 f6 8. Nc3 O-O-O 9. O-O Kb8 10. Qd2 g5 11. e4 dxe4 12. Nxe4 Bh3 13. Ne1 h5 14. Bxh3 Qxh3 {Brodie,P (1764)-Klimczak, J (2185) ICCF 2018 0-1 (56)}) (3. e4 dxe4 4. dxe4 Qxd1+ 5. Kxd1 Nf6 6. f3 Bc5 7. Be2 Nc6 8. c3 Be6 9. b4 Nxb4 10. cxb4 Bd4 11. Bb5+ c6 12. Ba4 Bxa1 13. Bd2 O-O 14. Bb3 Bxb3+ {Wójcik,L-Özcan,S ICCF 2019 0-1 (40)}) (3. a3 g6 4. b3 Bg7 5. Bb2 Nc6 6. h3 Nf6 7. Nd2 d4 8. e4 a5 9. Ne2 Be6 10. g3 O-O 11. Bg2 Qd7 12. g4 a4 13. b4 Qe7 14. Ng3 Qd7 {Soldano,G (2251)-Nguyen,M (1979) ICCF 2018 0-1 (27)} ) 3... Nf6 4. g4 (4. a3 Bd6 5. Ne2 (5. g4 c6 6. Bd2 O-O 7. b4 a5 8. c3 axb4 9. cxb4 d4 10. e4 Na6 11. g5 Nd7 12. h4 Nxb4 13. Bxb4 Bxb4+ 14. Ke2 Ba5 15. Bh3 f5 16. Bxf5 Rxf5 {Wójcik,L (1307)-Warchol,D ICCF 2019 0-1 (26)}) 5... h5 6. g3 O-O 7. Nd2 Nc6 8. b3 Re8 9. Bg2 Bf5 10. Bb2 Qd7 11. Ng1 e4 12. d4 a5 13. Ne2 a4 14. b4 Nxb4 15. axb4 Bxb4 {Soldano,G (2251)-Jacon,M (1746) ICCF 2018 0-1 (27)}) 4... Be6 5. g5 Nfd7 6. h4 Nc6 7. Bd2 Qe7 (7... h6 8. f4 exf4 9. exf4 hxg5 10. fxg5 Bd6 11. Bh3 Rxh4 12. Bg2 Rxh1 13. Bxh1 Qe7 14. Be3 d4 15. Qd2 dxe3 16. Qxe3 Bc5 17. Qg3 Bd5+ 18. Ne2 Bxh1 19. c3 {Wójcik,L (1307)-Salminen,J (2088) ICCF 2019 0-1 (26)}) 8. a3 h6 9. f4 exf4 10. d4 hxg5 11. b4 g4 12. h5 Bf5 13. b5 Nxd4 {Wójcik,L (1307)-Catois,Y (1794) ICCF 2019 0-1}) (2. Nd2 e5 (2... c5 3. g3 e5 (3... Nf6 4. Bg2 e5 5. e4 Be7 6. Ne2 Nc6 7. Nb3 dxe4 8. dxe4 Qxd1+ 9. Kxd1 c4 10. Nd2 Ng4 11. Rf1 Nxh2 12. Rh1 Ng4 13. Rf1 Bc5 14. Nxc4 Be6 15. Ne3 { Wilshusen,H (1434)-Byrne,M (2238) ICCF 2018 0-1}) 4. Bg2 Nc6 5. e4 d4 6. Nb3 Bd6 7. Qe2 Nf6 8. a3 O-O 9. Bd2 b5 10. Nh3 c4 11. Nc1 a5 12. O-O Qb6 13. Kh1 Rb8 14. f4 {Wilshusen,H (1434)-Voveris,S (2400) ICCF 2018 0-1}) 3. e3 (3. e4 Bb4 (3... d4 4. Ngf3 Nc6 5. Be2 Bb4 6. O-O Nf6 7. Nc4 Qe7 8. a3 Bd6 9. c3 Be6 10. Nxd6+ Qxd6 11. cxd4 Nxd4 12. Nxd4 Qxd4 13. Qc2 O-O-O 14. Be3 Qd6 15. Rac1 { Puzanov,V (2126)-Finkbeiner,K (1669) ICCF 2011 1-0}) 4. c3 Bc5 5. Ngf3 dxe4 6. Nxe4 Bb6 7. Nxe5 Qe7 8. Qh5 Kf8 9. d4 Nc6 10. Bc4 Be6 11. Bxe6 Nxe5 12. Qxe5 f6 13. Qf5 g6 14. Qh3 Re8 {Galué,M-Carrillo Castaño,J (1739) ICCF 2013 1-0 (27)}) 3... Nc6 (3... c5 4. Ne2 Nc6 5. Ng3 Nf6 6. Be2 Bd6 (6... Be7 7. O-O (7. c3 O-O 8. e4 d4 9. c4 a6 10. O-O b5 11. b3 b4 12. h3 h6 13. Nf3 Nh7 14. Nh2 f5 15. Nxf5 Bxf5 16. exf5 Rxf5 17. Bf3 Qd6 18. Be4 Rf7 {Jooste,M (1838)-Carlin,K ICCF 2006 1-0 (34)}) 7... d4 8. e4 O-O 9. Nf3 Bg4 10. Ne1 Bxe2 11. Qxe2 Ne8 12. f4 Nd6 13. Qg4 {1-0 (13) Jooste,M (1838)-Kaya,G ICCF 2006}) 7. O-O O-O 8. c4 Be6 9. b3 d4 10. e4 Bc7 11. Nf3 Ba5 12. Ng5 Bd7 13. f4 Bc3 14. Rb1 exf4 15. Bxf4 { Jooste,M (1838)-Ozbostanlar,O ICCF 2006 1-0 (36)}) 4. Ne2 Nf6 5. Ng3 Be6 (5... Be7 6. Be2 O-O 7. a3 Be6 8. O-O a5 9. b3 d4 10. e4 a4 11. b4 b5 12. Nf3 h6 13. h3 Nh7 14. Nh2 Nf6 15. Ng4 Nd7 16. Nxe5 Ndxe5 17. f4 {Jooste,M (1838)-Tan,F (1730) ICCF 2006 1-0 (27)}) (5... h5 6. Be2 h4 7. Ngf1 Bf5 8. a3 Qd7 9. b4 O-O-O 10. Bb2 Re8 11. Nf3 Bd6 12. c4 d4 13. e4 h3 14. g3 Nxe4 15. dxe4 Bxe4 16. N1d2 Bf5 17. Qa4 {Jooste,M (1838)-Raimbault,F (1944) ICCF 2006 0-1 (29)}) 6. Be2 Qd7 (6... Bd6 7. a3 O-O 8. O-O a5 9. c4 a4 10. Nf3 dxc4 11. dxc4 Nd7 12. Ne4 Nc5 13. Nfg5 Bf5 14. Ng3 Bg6 15. f4 exf4 16. exf4 Nb3 17. f5 Nxa1 18. fxg6 {Jooste,M (1838)-Selen,D ICCF 2006 0-1 (29)}) 7. a3 g6 8. b4 h5 9. Bb2 h4 10. Ngf1 d4 11. Nf3 Bg7 12. b5 Ne7 13. Nxe5 Qxb5 {Jooste,M (1997)-Dzenis,J ICCF 2007 0-1 (31)}) (2. Nf3 Nf6 3. Nc3 c5 (3... Nc6 4. d4 g6 5. e3 Bg7 6. Bd3 O-O 7. h3 Re8 8. O-O e6 9. Re1 a6 10. a3 Nb8 11. e4 Nfd7 12. exd5 exd5 13. Rxe8+ Qxe8 14. Nxd5 Qf8 15. Nxc7 {Wright,D (1618)-Segreto,T (1679) ICCF 2016 1-0 (34) }) (3... d4 4. Ne4 Nc6 5. Nxf6+ exf6 6. e4 dxe3 7. fxe3 Bd6 8. g3 O-O 9. Bg2 Be6 10. d4 Re8 11. d5 Bxd5 12. O-O Bc5 13. c4 Bxc4 14. Re1 Qxd1 15. Rxd1 { Horváth,P-Wallner,F ICCF 2020 0-1 (42)}) 4. Bg5 (4. g3 d4 (4... Nc6 5. Bg2 d4 6. Ne4 Nxe4 7. dxe4 e5 8. O-O Be7 9. e3 Bg4 10. Qd2 O-O 11. Ne1 c4 12. f3 Be6 13. exd4 exd4 14. f4 f6 15. f5 Bf7 16. h4 {Ridout,P (1445)-Gupta,A (2187) ICCF 2019 0-1 (25)}) 5. Nb1 Nc6 6. Bg2 e5 7. O-O Bg4 8. Na3 Be7 9. Nc4 Qc7 10. a4 O-O 11. Bg5 h6 12. Bd2 Be6 13. b3 {Ferreira,L (1892)-Tropf,P (2330) ICCF 2020}) (4. e3 Nc6 5. Be2 e5 6. e4 d4 7. Nd5 Nxd5 8. exd5 Qxd5 9. O-O Be7 10. c4 dxc3 11. bxc3 Bf5 12. Nd4 cxd4 13. c4 Qd7 14. g4 Be6 15. Bd2 e4 {Henriques,K (1423) -Rimkus,B (2103) ICCF 2017 0-1 (29)}) (4. Bf4 d4 5. Nb5 Qa5+ 6. Nc3 dxc3 7. e4 cxb2+ 8. Qd2 bxa1=Q+ 9. Ke2 Q5xa2 10. Ne1 e5 11. Bxe5 Qxe5 12. Nf3 Bg4 13. h3 Bxf3+ 14. gxf3 Nc6 15. Bg2 Nd4+ {Whittle,P (1492)-Farias,S (2232) ICCF 2014 0-1 }) 4... Nc6 5. Nb5 Qa5+ 6. Nc3 d4 7. e3 dxc3 8. g3 cxb2+ 9. Nd2 Nd5 10. Rb1 Nc3 11. Qf3 Nxb1 {0-1 (11) Stera,A-Bellegotti,G ICCF 2012}) (2. Nc3 e5 (2... e6 3. Nf3 c5 4. e3 Nc6 5. Be2 Nf6 6. O-O Be7 7. d4 O-O 8. a3 a5 9. Bb5 Bd7 10. Ne5 Nxe5 11. dxe5 Bxb5 12. Nxb5 Nd7 13. f4 f6 14. exf6 {Chugg,M (1495)-Beck,A ICCF 2015 0-1 (28)}) 3. Nf3 (3. Nh3 Nf6 4. Bg5 Nc6 5. e3 Be7 6. g3 Bg4 7. f3 Be6 8. Nf2 d4 9. exd4 exd4 {0-1 (9) Stera,A-Gaines,D ICCF 2012}) (3. h3 d4 4. Ne4 Nc6 5. c3 Nf6 6. Bg5 Be7 7. a4 Bf5 8. g4 Bxe4 9. dxe4 Nxe4 10. cxd4 Bxg5 11. Bg2 Bd2+ 12. Kf1 Qxd4 13. Nf3 Qxf2# {0-1 (13) Robin,M-Leckinger,M ICCF 2007}) 3... Nc6 4. Bd2 (4. Bg5 f6 5. Bh4 d4 6. Ne4 g5 7. Bg3 g4 8. Nh4 f5 9. Nd2 f4 10. Bxf4 exf4 11. Nc4 Qxh4 12. g3 fxg3 13. fxg3 Qh5 14. Bg2 Nge7 15. e3 dxe3 { Limoli,P (1806)-Di Primio,E ICCF 2010 0-1}) 4... Nf6 5. e3 Bd6 6. Be2 O-O 7. O-O a6 8. a3 Re8 9. Rc1 e4 10. dxe4 dxe4 11. Nd4 Ne5 12. b4 c5 13. bxc5 Bxc5 { Hein,C (2008)-Tritt,M (2621) ICCF 2010 0-1}) (2. d4 c5 (2... e6 3. Nc3 Qf6 4. Nf3 Ne7 5. Bg5 Qg6 6. e3 Nf5 7. h4 f6 8. Bf4 Bd6 9. Qd3 Bxf4 10. exf4 Nc6 11. g4 Nfxd4 12. h5 Qxd3 13. cxd3 Nxf3+ 14. Ke2 {Whittle,P (1492)-Mohammed,H (1791) ICCF 2014 0-1}) 3. dxc5 (3. e3 Nc6 (3... e6 4. c3 Nc6 5. Nf3 Qb6 6. b3 g6 7. Na3 Bg7 8. Qc2 Nge7 9. Nb5 O-O 10. Nd6 Bd7 11. Ba3 cxd4 12. cxd4 Qa5+ 13. Kd1 Qxa3 14. Nxb7 Qb4 15. Nc5 {Rivera,J (1448)-Acemyan,D (1863) ICCF 2018 0-1 (28)} ) 4. c3 Nf6 5. dxc5 e5 6. b4 Bg4 7. Be2 Bxe2 8. Nxe2 a5 9. b5 Nb8 10. c4 Bxc5 11. cxd5 Qxd5 12. Qxd5 Nxd5 13. Nec3 Nb4 14. O-O Nc2 {Sartori,D-Caridi,N (1713) ICCF 2008 1/2 (49)}) 3... Qa5+ (3... e6 4. Nf3 Bxc5 5. e3 Nf6 6. c4 O-O 7. a3 dxc4 8. Bxc4 Qxd1+ 9. Kxd1 Rd8+ 10. Ke2 a5 11. Rd1 Rxd1 12. Kxd1 Nc6 13. b3 a4 14. b4 Bd6 15. Bb2 {Sartori,D-Ghinelli,L ICCF 2008 1-0 (39)}) 4. c3 Qxc5 5. Nf3 e6 6. Nbd2 Bd6 7. e4 Nf6 8. e5 Bxe5 9. Nxe5 Nc6 10. Ndf3 Nxe5 11. Nxe5 O-O 12. Bd3 b6 13. O-O g6 {Sartori,D-Di Pietro,R ICCF 2008 1-0}) (2. b3 Nc6 3. Bb2 e5 4. c4 Bb4+ 5. Nd2 dxc4 6. bxc4 Nf6 7. e4 Bg4 8. Ngf3 O-O 9. Be2 Bxf3 10. Bxf3 Qxd3 11. Be2 Qd7 12. O-O Bxd2 13. Qa4 Nxe4 {Tellier,H-Aymard,M (1969) ICCF 2008 0-1 (25)}) (2. Bg5 c6 3. Nc3 f6 4. Bf4 e5 5. Bg3 Be6 6. e3 Nd7 7. d4 Bb4 8. Qd2 Nh6 9. a3 Be7 10. Be2 Bf7 11. Qc1 Nf5 12. Qd2 h5 13. h3 Nxg3 {Chugg,M (1495)-Wilshusen,H (1648) ICCF 2015 0-1 (38)}) (2. c4 dxc4 3. Qa4+ Nc6 4. Qxc4 Nf6 5. Nf3 e5 6. Ng5 Qe7 7. Nc3 h6 8. Nf3 Nb4 9. Rb1 Be6 10. Qb5+ c6 11. Qa4 e4 12. Qd1 exf3 13. gxf3 Rd8 {Oneill,B-Ralls,R ICCF 2012 0-1}) 2... e5 3. Nf3 (3. Bg2 Nc6 (3... c5 4. Nf3 (4. Nc3 d4 (4... Ne7 5. e4 d4 6. Nd5 Be6 7. c4 Nd7 8. Ne2 Rb8 9. O-O b5 10. f4 Bg4 11. h3 Bxe2 12. Qxe2 bxc4 13. dxc4 Rb7 14. b3 Nxd5 15. exd5 Bd6 16. Bd2 {Thau,O (1704)-Abolins-Abols,D (2346) ICCF 2020 0-1 (44)}) 5. Nd5 Ne7 6. c4 Nbc6 7. f4 exf4 8. Nxf4 Nf5 9. Ngh3 h5 10. Nd5 Bd6 11. O-O h4 12. g4 Nfe7 13. e3 O-O 14. exd4 Nxd4 15. Bg5 Qd7 {Brotherton,T (1912)-Tanase,M (2092) ICCF 2016 1/2 (39)}) (4. e3 Nf6 5. d4 cxd4 6. exd4 exd4 7. Qxd4 Nc6 8. Qd3 Nb4 9. Qe2+ Qe7 10. Qxe7+ Bxe7 11. Na3 Bf5 12. Ne2 Bxc2 13. Nf4 g5 14. Ne2 Ne4 15. f3 Nd6 {Ipekyilmaz,E (1700)-Endsley,B (2221) ICCF 2017 0-1 (57)}) 4... Nc6 5. Nc3 d4 6. Ne4 f5 (6... Be7 7. O-O f5 8. Ned2 Nh6 9. c3 Nf7 10. cxd4 { 1-0 (10) Broniek,M (2443)-Sanchez Alvarez,R ICCF 2018}) 7. Ned2 Nh6 8. Nc4 Nf7 9. e3 dxe3 10. Qe2 Be6 11. Qxe3 Bxc4 12. dxc4 Be7 13. O-O e4 14. Ne1 Qd6 15. f3 {Broniek,M (2438)-Panitevsky,I (2518) ICCF 2018 1/2 (50)}) (3... f5 4. c4 c6 ( 4... dxc4 5. Qa4+ c6 6. Qxc4 Bd6 7. Nf3 Qe7 8. O-O Nf6 9. Nbd2 Nbd7 10. b3 Nb6 11. Qc2 O-O 12. Bb2 Bd7 13. e4 Rad8 14. d4 exd4 15. exf5 c5 16. Rae1 {Petkov,P (2226)-Canal Oliveras,J (2207) ICCF 2010 1-0 (42)}) 5. Nf3 Bd6 6. O-O Nf6 7. cxd5 cxd5 8. Qb3 Nc6 9. Bg5 e4 10. dxe4 dxe4 11. Nfd2 Qe7 12. Nc4 Bc5 13. e3 Be6 14. Bxf6 gxf6 15. Rd1 {O'Callaghan,M (1680)-Idrisov,N ICCF 2010 0-1 (25)}) (3... Bd6 4. Bd2 (4. Kf1 Ne7 5. c4 dxc4 6. dxc4 O-O 7. Nc3 Nbc6 8. b3 a6 9. Bb2 f5 10. h4 Qe8 11. Nh3 e4 12. Qc1 f4 13. Nxf4 g5 14. Kg1 gxf4 15. Nxe4 Qh5 { Eliseev,N (2171)-Nekhaev,A (2470) ICCF 2019 1-0 (31)}) (4. e4 c6 5. exd5 cxd5 6. Ne2 Nc6 7. O-O Nge7 8. c4 d4 9. f4 O-O 10. Nd2 Nf5 11. Nf3 Re8 12. Nxe5 Bxe5 13. fxe5 Nxe5 14. b3 Ng4 15. Rf4 Nge3 {Lopes,M (2123)-Hunger,H (2341) ICCF 2016 0-1 (63)}) (4. Nc3 c6 5. e4 d4 6. Nce2 c5 7. f4 exf4 8. gxf4 Qh4+ 9. Kf1 Nh6 10. Nf3 Qd8 11. c3 Nc6 12. cxd4 cxd4 13. h3 O-O 14. Rg1 Re8 15. Bd2 a5 { Schelberg,M (1758)-Krammel,J (1964) ICCF 2018 0-1 (51)}) 4... Nf6 5. c4 d4 6. h3 O-O 7. e3 c5 8. Ne2 Nc6 9. exd4 exd4 10. Bf4 Bxf4 11. Nxf4 Re8+ 12. Ne2 Ne5 13. O-O Bf5 14. Bxb7 Bxh3 15. Bxa8 {Lamy,O (1614)-Lloyd,G (2242) ICCF 2018 0-1} ) (3... Be6 4. a3 Qd7 5. c4 c6 6. Nf3 f6 7. Nc3 dxc4 8. d4 Na6 9. dxe5 Qxd1+ 10. Nxd1 Nc5 11. Nd4 Bd5 12. Bxd5 cxd5 13. exf6 Nxf6 14. Nc3 Nce4 15. Nxe4 { Santos,M (2427)-Sekretaryov,R (2377) ICCF 2011 1/2}) (3... d4 4. Nf3 f6 5. c3 dxc3 6. bxc3 b5 7. a4 Bb7 8. axb5 g5 9. e4 g4 10. Nh4 a6 11. Nf5 axb5 12. Rxa8 Bxa8 13. Qe2 Ne7 14. O-O Rg8 15. Nh6 {Towery,B (1805)-Pedersen,H (1500) ICCF 2010 0-1 (37)}) (3... g6 4. e3 Nc6 5. d4 Nf6 6. b3 Bd6 7. Bb2 Bf5 8. a3 Qd7 9. Nd2 e4 10. Ne2 Ne7 11. h3 h5 12. Nc3 Rh7 13. Na4 c6 14. Rc1 Qc7 15. Qe2 { Ipekyilmaz,E (1665)-Rheindt,S (1834) ICCF 2016 1-0 (85)}) (3... h6 4. Nf3 Bd6 5. O-O (5. Nbd2 Nf6 6. e4 dxe4 7. dxe4 O-O 8. O-O Nc6 9. c3 a5 10. Qc2 Be6 11. Rd1 Qc8 12. Nf1 {1-0 (12) Pohjosmäki,R (2311)-Lehtinen,P (1940) ICCF 2018}) 5... Nf6 6. e4 dxe4 7. dxe4 O-O 8. Qe2 Qe7 9. Rd1 Re8 10. Nc3 c6 11. Nh4 Qc7 12. Nf5 Bxf5 13. exf5 Nbd7 14. Rb1 a6 15. Bd2 {Del Vivo,M (2215)-Fels,B (2185) ICCF 2019 1/2 (38)}) 4. Nd2 (4. b3 Bc5 5. e3 Nf6 6. Ne2 O-O 7. O-O Bg4 8. f3 Bf5 9. Kh1 d4 10. e4 Be6 11. a3 a6 12. b4 Be7 13. f4 exf4 14. Nxf4 Qd7 15. Nd2 Ng4 {Azzi,R (1578)-Ryder,A (2163) ICCF 2016 0-1 (45)}) (4. e3 Be6 (4... Be7 5. e4 dxe4 6. dxe4 Qxd1+ 7. Kxd1 Nf6 8. f3 Be6 9. Be3 O-O-O+ 10. Nd2 Rd7 11. Ne2 Rhd8 12. Kc1 Nb4 13. Nb3 b6 14. Nc3 Kb7 15. Rd1 Rxd1+ 16. Nxd1 {Ipekyilmaz,E (1552)-Deforel,J (2213) ICCF 2016 1/2 (58)}) 5. d4 (5. e4 dxe4 6. dxe4 Qxd1+ 7. Kxd1 Bc5 8. f3 O-O-O+ 9. Bd2 f5 10. f4 fxe4 11. Bxe4 Nf6 12. Bg2 Ng4 13. Kc1 Nf2 14. Ne2 Nxh1 15. Bxh1 Bg4 16. Bxc6 bxc6 {Ipekyilmaz,E (1552)-Cuccumini,V (2190) ICCF 2016 0-1 (52)}) 5... Nf6 6. b3 Bb4+ 7. c3 Bd6 8. Bb2 Qd7 9. a3 h5 10. c4 exd4 11. Bxd4 Nxd4 12. Qxd4 dxc4 13. bxc4 O-O-O 14. Nf3 c5 15. Qb2 Bxg3 {Ipekyilmaz,E (1665)-Bruce,R (1958) ICCF 2016 1-0 (50)}) (4. c3 Be6 5. Nd2 f5 6. e4 fxe4 7. dxe4 d4 8. Ngf3 dxc3 9. bxc3 Nf6 10. O-O Nd7 11. Nb3 Qe7 12. a4 O-O-O 13. Qc2 Kb8 14. Be3 Qe8 15. a5 a6 {Wilshusen,H (1656)-Zylla,J (2282) ICCF 2015 0-1 (26)}) (4. e4 dxe4 5. Bxe4 Nf6 6. Bxc6+ bxc6 7. Qf3 Bb4+ 8. c3 Be7 9. Ne2 O-O 10. O-O Bg4 11. Qe3 Nd5 12. Qxe5 Re8 13. Qd4 Bxe2 14. Re1 Bf6 15. Qc5 Qd7 {Barros,L (1719)-Pérez Rodríguez,R ICCF 2012 0-1}) 4... Bg4 (4... Be7 5. e4 Nf6 6. Ngf3 dxe4 7. dxe4 Be6 8. O-O Qd6 9. c3 O-O 10. Qc2 Rad8 11. Re1 Qc5 12. Nb3 Qb5 13. Bf1 Qa4 14. Bg5 h6 15. Bxf6 Bxf6 {Cederquist,B (1983) -Josefsson,K (2232) ICCF 2011 0-1 (38)}) 5. h3 Be6 6. Ngf3 Nf6 7. O-O Qd7 8. Re1 Bxh3 {0-1 (8) Grigoryan,D-Savsek,A (1892) ICCF 2018}) (3. e4 dxe4 4. dxe4 Qxd1+ 5. Kxd1 Bc5 6. f3 f5 7. Nd2 Nf6 8. Bd3 fxe4 9. Nxe4 Bb6 10. Ke2 O-O 11. Nxf6+ Rxf6 12. Bg5 Rf8 13. Be3 Be6 14. Bxb6 axb6 {Mölder,B-Carr,T ICCF 2014 1/ 2 (34)}) 3... Bd6 4. Bg2 Nf6 5. O-O (5. Nc3 c6 6. e4 (6. a4 O-O 7. O-O Re8 ( 7... h6 8. e4 Re8 9. exd5 cxd5 10. Nh4 Bg4 11. Qe1 Bb4 12. Bd2 Nc6 13. Nb5 Bc5 14. h3 Be6 15. b4 Be7 16. Na3 e4 17. b5 Ne5 18. Qe2 g5 19. f4 {Driessen,C (1872)-Sowden,E (2196) ICCF 2009 0-1 (38)}) 8. e4 Na6 9. exd5 cxd5 10. Bg5 Nb4 11. Nb5 Bb8 12. Qd2 Nc6 13. c4 d4 14. Rfe1 a6 15. Na3 Bd6 16. Nc2 a5 {Driessen, C (1872)-Vasile,C (2361) ICCF 2009 0-1 (55)}) (6. Bd2 Qb6 7. Na4 Qa6 8. c4 O-O 9. O-O dxc4 10. dxc4 Qxc4 11. Rc1 Qe6 12. a3 Na6 13. Qc2 e4 14. Ng5 Qe7 15. Nxe4 Bf5 16. Nxf6+ Qxf6 17. e4 Bg4 {Santamaría Quintana,I (1272)-Hernández Delgado,J (1963) ICCF 2017 0-1 (29)}) 6... d4 7. Ne2 c5 8. c3 Nc6 9. Nd2 O-O 10. O-O Be6 11. f4 exf4 12. gxf4 Be7 13. f5 Bd7 14. a4 a6 15. Nf4 Rc8 16. Nd5 Nxd5 {Dreisch,J (2031)-Niziolek,J (1998) ICCF 2017 1/2 (31)}) (5. c4 d4 6. O-O (6. c5 Bxc5 7. Nxe5 O-O 8. Nd2 Re8 9. Ndc4 Nd5 10. Qa4 c6 11. Bd2 f6 12. Nf3 b5 13. Qa5 Qd7 14. b4 Nxb4 15. O-O N8a6 16. Nb2 Nc2 17. Rac1 Bb6 {Domenche Redondo,F (1764)-Straka,J (2035) ICCF 2018 0-1}) 6... c5 7. b4 Nc6 8. b5 Ne7 9. Bg5 Neg8 10. e3 h6 11. Bxf6 Nxf6 12. exd4 exd4 13. Re1+ Kf8 14. a4 Rb8 15. a5 g6 16. Nbd2 Kg7 {Brotherton,T (1912)-Ozols,A (2079) ICCF 2016 1/2 (29)}) (5. e3 O-O 6. O-O Re8 7. c4 dxc4 8. dxc4 e4 9. Nd4 Bg4 10. Qc2 c5 11. Nb5 Nc6 12. a3 Be5 13. Nd2 Be2 14. Re1 Bd3 15. Qd1 Qe7 16. Bf1 Rad8 {Azzi,R (1578)-Kunz,H (2302) ICCF 2016 0-1}) (5. e4 dxe4 6. dxe4 O-O 7. Nc3 Re8 8. O-O h6 9. a3 c6 10. Be3 Qc7 11. h3 Rd8 12. Qc1 Nbd7 13. Rd1 b6 14. Nh4 Bf8 15. f3 Bb7 16. Bf1 b5 {Cipolla,A (2222)-Admakin,V (2340) ICCF 2019 1/2 (41)}) 5... O-O 6. Nc3 (6. c4 d4 (6... c6 7. cxd5 cxd5 8. Nc3 (8. Bg5 Be6 9. Nc3 Nbd7 10. Rc1 Qb6 11. Bd2 h6 12. Qb3 Qxb3 13. axb3 a6 14. d4 e4 15. Ne1 b5 16. Nc2 Rac8 17. Bf4 Be7 18. f3 b4 19. Na4 g5 {Brotherton,T (1912)-Lumsdon,A (2015) ICCF 2016 1/2 (49)}) 8... Nc6 (8... Be6 9. Ng5 Nc6 10. Nxe6 fxe6 11. e4 d4 12. Nb5 Bc5 13. Bh3 Qe7 14. Qb3 Rae8 15. Bg5 h6 16. Bd2 a6 17. Na3 Kh7 18. Rac1 Bxa3 19. bxa3 g5 20. Rc2 {Lansford,M (1659)-Potter,C (1579) ICCF 2014 1-0 (29)}) (8... h6 9. e4 (9. Nb5 Be6 10. Nxd6 Qxd6 11. a4 Nc6 12. b4 a5 13. b5 Nb4 14. Ba3 Rfc8 15. e3 Nd7 16. Qd2 Nb6 17. Bxb4 axb4 18. a5 Nd7 19. Qb2 Qc5 20. d4 Qxb5 {Brotherton,T (2004)-Moujan,P ICCF 2016 1-0 (37)}) 9... d4 10. Nb5 Nc6 11. Nxd6 Qxd6 12. Ne1 a5 13. h3 Nd7 14. f4 b6 15. f5 Ba6 16. Rf3 f6 17. Bd2 Nc5 18. h4 Kf7 19. Bf1 Ke7 20. Nc2 {Broniek,M (2438)-Schmidt,T (2414) ICCF 2018 1/2 (44)}) (8... d4 9. Nb5 Nc6 10. Nxd6 Qxd6 11. Bd2 Be6 12. Ng5 Bd5 13. Ne4 Nxe4 14. Bxe4 f5 15. Bxd5+ Qxd5 16. b4 a6 17. Qb1 Ne7 18. Rc1 Rfc8 19. Qb2 h6 20. a4 {Mercadal Benejam,J (2400)-Fasser,W (2208) ICCF 2016 1/2}) 9. Bg5 Be7 (9... Be6 10. Bxf6 gxf6 11. Qd2 Rc8 12. Rac1 Be7 13. Qh6 Re8 14. Qh5 Qd7 15. e4 d4 16. Nd5 Nb4 17. Nh4 Nxd5 18. exd5 Bg4 19. Qh6 Rxc1 20. Rxc1 Rc8 21. Rxc8+ {Alejos,P (2171) -Prystenski,A (2195) ICCF 2017 1-0 (45)}) 10. d4 e4 11. Ne5 h6 12. Bf4 Be6 13. f3 exf3 14. exf3 Rc8 15. Be3 Qb6 16. Na4 Qa5 17. a3 Bf5 18. b4 {Hoekstra,I (2181)-Tanti,J (2170) ICCF 2018 1/2 (38)}) 7. e3 (7. a3 c5 8. b4 (8. e3 Nc6 9. exd4 exd4 10. Bg5 h6 11. Bxf6 Qxf6 12. Nfd2 Qg6 13. Ne4 Be7 14. f4 Bd7 15. Nbd2 f5 16. Nf2 Rae8 17. Nf3 Kh7 18. Qd2 Qf6 19. Rae1 Bd6 {Papenin,N (2707)-Blass,U (2602) ICCF 2012 0-1 (29)}) 8... Re8 9. bxc5 Bxc5 10. Nbd2 Bd7 11. Nxe5 Rxe5 12. Bxb7 Nc6 13. Bxa8 Qxa8 14. f3 a5 15. Ne4 Nxe4 16. fxe4 a4 17. Bd2 Re8 18. Qe1 Bh3 {Papenin,N (2707)-Akdag,M (2565) ICCF 2012 0-1}) (7. Nbd2 Nc6 8. a3 a5 9. Rb1 (9. h3 h6 10. Qc2 Re8 11. b3 Bc5 12. Rd1 Qe7 13. Ne4 Nxe4 14. dxe4 Be6 15. Ne1 Reb8 16. Nd3 Ra6 17. Rd2 Ba7 18. Rb1 Bc5 19. Ra1 b6 20. f4 exf4 { Morley,P (2241)-Martín Sánchez,C (2209) ICCF 2007 1/2 (32)}) 9... a4 10. Qc2 Bc5 11. Re1 Ra6 12. Ng5 Be7 13. Nge4 {1-0 (13) Brotherton,T (1980)-Zuna,A (1787) ICCF 2012}) (7. b4 Re8 8. Qb3 a5 9. b5 Nbd7 10. Nbd2 h6 11. Qc2 a4 12. Rb1 Qe7 13. e3 dxe3 14. fxe3 Nc5 15. Bb2 Ng4 16. Rbe1 Bf5 17. e4 Bh7 18. Kh1 Rad8 {Piersig,K (2295)-Petrigin,O (2072) ICCF 2013 0-1 (51)}) (7. Na3 c5 8. Nb5 Nc6 9. Nxd6 Qxd6 10. a3 a5 11. Bg5 h6 12. Bxf6 Qxf6 13. Rb1 Qd6 14. Nd2 b6 15. Bd5 Bh3 16. Re1 Be6 17. Bg2 Qc7 18. Qc2 Kh8 {Andersen,J (2312)-Johnson,B (2167) ICCF 2010 0-1 (42)}) (7. Bg5 h6 (7... Nbd7 8. Qc2 c5 9. Nbd2 Qc7 10. e3 Rb8 11. exd4 exd4 12. Bxf6 Nxf6 13. Rfe1 h6 14. Ne4 Nxe4 15. Rxe4 Bf5 16. Ree1 b6 17. Nd2 g5 18. Bd5 Rbe8 19. a3 {Grego,L (2319)-Mirkowski,P (2315) ICCF 2015 0-1 (45)}) 8. Bxf6 Qxf6 9. Nbd2 Be7 10. Qc2 Nc6 11. a3 a5 12. Qa4 Bd7 13. Nh4 Qd6 14. Qb5 Bxh4 15. Ne4 Qe7 16. gxh4 Rfb8 17. b3 Qxh4 18. Rae1 b6 {Seeger,N-Van Dries,C ICCF 2007 1/2 (43)}) (7. c5 Bxc5 8. Nxe5 Re8 9. Nf3 h6 10. Qc2 Bf8 11. e4 dxe3 12. Bxe3 Nc6 13. a3 Bf5 14. Rd1 Ng4 15. Bc5 Nge5 16. Bxf8 Nxf3+ 17. Kh1 (17. Bxf3 Nd4 18. Qc5 Nxf3+ {0-1 (18) Sosa Landa,H (1688)-Janisch,M ICCF 2013}) 17... Ncd4 18. Qc5 Re5 {Sosa Landa,H (1688)-Hernandez,A ICCF 2013 0-1}) 7... dxe3 (7... c5 8. exd4 exd4 (8... cxd4 9. c5 (9. Re1 Nc6 10. a3 a5 11. Bg5 h6 12. Bxf6 Qxf6 13. Nbd2 Bc7 14. Qc2 a4 15. c5 Re8 16. Nc4 Be6 17. Rac1 Qe7 18. Qd1 Bd5 19. Ncxe5 Bxe5 20. Nxe5 Bxg2 {Serovey,M (2027)-Steel,A (2042) ICCF 2014 1/2 (26)}) (9. Bg5 h6 (9... Nc6 10. Nbd2 h6 11. Bxf6 Qxf6 12. Ne4 Qe7 13. Nxd6 Qxd6 14. Nd2 Bf5 15. Ne4 Qe7 16. a3 a5 17. Rc1 a4 18. Re1 Rfe8 19. c5 Bxe4 20. Bxe4 Ra5 21. Re2 {Brotherton,T (2004)-Reed,A (2094) ICCF 2016 1-0 (50)}) 10. Bxf6 Qxf6 11. Nbd2 Bc7 12. b4 Bg4 13. Rc1 Qb6 14. Rb1 Nd7 15. Qc2 a5 16. bxa5 Qxa5 17. Rxb7 Rfb8 18. Rxb8+ Nxb8 19. Ra1 Ra7 20. Nb3 Qa3 {Zimmermann,F (2171)-Billinger,W (2284) ICCF 2019 1/2}) (9. b4 Re8 10. c5 Bf8 11. Re1 a5 12. b5 Qc7 13. Ba3 Bxc5 14. Qc1 Nbd7 15. Nbd2 Rb8 16. Ng5 b6 17. Qc4 Re7 18. Nge4 Nxe4 19. Nxe4 Bb7 20. Bxc5 Nxc5 {Ackley,P (2065)-Russell,H ICCF 2014 0-1 (63)}) 9... Bc7 (9... Bxc5 10. Nxe5 Bd6 11. Nc4 Be7 12. Bg5 Nc6 13. Qb3 h6 14. Bxf6 Bxf6 15. Nbd2 Bd7 16. Ne4 Be7 17. Qxb7 Rb8 18. Qa6 Nb4 19. Qxa7 Bb5 20. Ned2 Nxd3 21. a4 {Grego,L (2319)-Caliò,M (2334) ICCF 2015 1/2 (36)}) 10. b4 Be6 ( 10... Nd5 11. b5 Nd7 12. Ba3 Re8 13. Re1 N7f6 14. Qb3 Be6 15. Ng5 Ba5 16. Nxe6 Rxe6 17. Re2 Rb8 18. Bb2 Rc8 19. Bh3 Re8 20. Bxc8 Qxc8 21. f3 Qxc5 22. Na3 { Uecker,D (2315)-Fagerström,M (2191) ICCF 2015 1-0 (55)}) 11. b5 Bd5 12. Nbd2 Re8 13. Ng5 Bxg2 14. Kxg2 Qd5+ 15. Qf3 Qxf3+ 16. Ngxf3 b6 17. Ba3 bxc5 18. Rfc1 Nbd7 19. Nb3 Nd5 20. Nxc5 {Henri,J (2393)-Claridge,J (2345) ICCF 2016 0-1 (28)} ) 9. Bg5 (9. b4 cxb4 10. Bb2 (10. Nbd2 a5 11. Bb2 a4 12. a3 b3 13. Nxd4 Be5 14. N2f3 Bg4 15. Qc1 Bxf3 16. Nxf3 Bxb2 17. Qxb2 Qxd3 18. Ne5 Qd6 19. Bxb7 Ra7 20. Rad1 Qc5 21. Bd5 Nbd7 {Bjazevic,P-Pfaff,H ICCF 2006 0-1 (26)}) 10... a5 11. Bxd4 Nc6 12. Be3 Be6 13. Nbd2 (13. Qe2 Bg4 14. d4 Re8 15. Qd3 Qd7 16. Nbd2 Bf5 17. Qe2 a4 18. Rfe1 h6 19. Qd1 Na5 20. Rc1 Ng4 21. Nh4 Bh7 22. c5 Bc7 23. Nhf3 Bf5 24. Nh4 Be6 {Morley,P (2368)-Fagerström,M (2286) ICCF 2017 1/2 (55)}) 13... Be5 14. Nxe5 Nxe5 15. Bxb7 Rb8 16. Bg2 Nxd3 17. Qc2 Ng4 18. Be4 Nge5 19. Rfd1 f5 20. Bxd3 Qxd3 21. Qxd3 Nxd3 22. Nb3 Bxc4 23. Nxa5 Bb5 24. Nc6 Rb7 25. Nd4 Bc4 26. Rd2 h6 27. Nb3 Ne5 28. Kg2 Ra8 29. Rc1 Bf7 30. Bf4 Nc4 31. Rd4 g5 32. Bd2 Nxd2 {1/2 (32) Brotherton,T (1950)-Legemaat,G (2345) ICCF 2016 Irregular Openings}) 9... h6 (9... Nbd7 10. Na3 a6 (10... h6 11. Bc1 a6 {1/2 (11) Brotherton,T (2209)-Höxter,H (2229) ICCF 2019}) 11. b4 h6 12. Bd2 Re8 13. Nc2 Rb8 14. a4 cxb4 15. a5 Ne5 (15... Nc5 16. Bxb4 Bf5 17. Ra3 Ne6 18. Bxd6 Qxd6 19. Qa1 Rbd8 20. Rb1 Re7 21. Rb6 Qc5 22. Rab3 Bh7 23. Nb4 Qh5 24. Rb1 Nc5 25. h3 Re6 26. g4 Qg6 27. Nxd4 {Destruels Moreno,F (2304)-Rodríguez Pérez,R (2228) ICCF 2012 1-0 (52)}) 16. Nxe5 Rxe5 17. Nxb4 Bf5 18. Bf4 Re8 19. Qd2 Qc7 20. Nd5 Bxf4 21. Nxf4 {Mercadal Benejam,J (2400)-Sodomski,A (2235) ICCF 2016 1/2 (37)}) 10. Bxf6 Qxf6 11. Nbd2 Qd8 (11... Nc6 12. Nh4 Bd7 (12... Qd8 13. Bxc6 bxc6 14. Ne4 Rb8 15. Nxd6 Qxd6 16. Qd2 g5 17. Ng2 Bh3 18. Rae1 f6 19. Re2 Rfe8 20. Rxe8+ Rxe8 21. Re1 Rxe1+ 22. Qxe1 Bf5 23. Qe2 Qd7 24. h4 {Mercadal Benejam,J (2400) -Bolz,J (2295) ICCF 2016 1/2 (26)}) (12... Re8 13. Ne4 Qd8 14. f4 Bf8 15. a3 g6 16. f5 g5 17. Nf3 Rb8 18. h4 gxh4 19. Nxh4 b5 20. Qg4+ Kh8 21. Qh5 Ne5 22. b4 bxc4 23. bxc5 Bd7 24. dxc4 {Mercadal Benejam,J (2400)-Kazoks,A (2341) ICCF 2016 1-0 (37)}) 13. Ne4 Qe6 14. Qh5 Rae8 15. Nxc5 Bxc5 16. Qxc5 b6 17. Qa3 a5 18. Qb3 Nb4 19. Nf3 Qf6 20. Nd2 Na6 {Mercadal Benejam,J (2400)-Vodicka,M (2240) ICCF 2016 1-0 (51)} 21. Rae1 Bf5 22. Ne4 Qd8 23. Qd1 Re7 24. Re2 Bg4 25. f3 Bh5 26. Rfe1 Rfe8 27. Qd2 Kf8 28. Kf1 Qc7 29. Nf2 Rxe2 30. Rxe2 Rxe2 31. Qxe2 Nc5 32. Bh3 Qc6 {Vodicka,M (2240)-Blake,M (2234) ICCF 2016 1/2 (36)}) (11... Bc7 12. Re1 (12. a3 a5 13. Re1 a4 14. Ne4 Qb6 15. Nh4 g5 16. Qf3 gxh4 {1/2 (16) Brotherton,T (2209)-Ellis,J (2205) ICCF 2019}) 12... a5 13. Ne4 Qb6 14. Nfd2 a4 15. f4 a3 16. bxa3 Rxa3 17. Rb1 Qa5 18. Nb3 Qa7 19. Nbxc5 Nc6 20. Qh5 Rxa2 21. Bh3 Ba5 22. Nf6+ gxf6 23. Bxc8 {Hendri Sevano,R (2180)-Pitono,P (2045) ICCF 2019 1-0 (33)}) 12. Ne4 a5 (12... Re8 13. Nxd6 Qxd6 14. Nd2 Nc6 15. Ne4 Qf8 16. a3 Bd7 17. f4 f5 18. Nd2 Kh7 19. Nf3 Re3 20. Ne1 Rb8 21. Rb1 a5 22. Bf3 b6 23. Ng2 {Broniek,M (2438)-Soh,E (2434) ICCF 2018 1/2 (45)}) (12... Nc6 13. Nh4 Be7 14. Qh5 Rb8 15. Nf5 Bxf5 16. Qxf5 g6 17. Qf3 Kg7 18. Rae1 f5 19. Nd2 Bd6 20. Qd1 Qd7 21. Bxc6 Qxc6 22. Re6 Rbe8 23. Rfe1 Rxe6 24. Rxe6 {Broniek,M (2438) -Siigur,J (2409) ICCF 2018 1/2 (26)}) 13. Nxd6 Qxd6 14. Nd2 Ra6 15. Re1 b6 16. Ne4 Qc7 17. Qh5 Nd7 18. Re2 Bb7 19. Rae1 {Meiners,E (2448)-Pérez López,A (2458) ICCF 2019 1/2 (26)}) 8. Bxe3 Nc6 9. Nc3 Re8 10. h3 h6 11. d4 exd4 12. Nxd4 Nxd4 13. Bxd4 c6 14. Bxf6 gxf6 15. Qc2 f5 16. Rfe1 Rxe1+ {1/2 (16) Kazoks,A (2341) -Packroff,H (2273) ICCF 2016}) (6. a3 Bg4 (6... Re8 7. b3 e4 8. dxe4 dxe4 9. Nd4 Bg4 {0-1 (9) DuCharme,S (1734)-Lund,S (1340) ICCF 2019}) (6... Qe7 7. Re1 e4 8. Nd4 Rd8 9. Nb3 h6 10. Nc3 a6 11. Rf1 Be6 12. Qe1 Nc6 13. Be3 Rab8 14. Qd2 Ne5 15. Bf4 {Coope,D (1958)-Popov,V (2196) ICCF 2013 0-1 (57)}) 7. Nbd2 c5 8. c4 Bxf3 9. Bxf3 Nbd7 10. cxd5 b5 11. e4 Qc7 12. b3 g6 13. Bb2 Kg7 14. Rc1 Rab8 15. Bg2 Rfe8 16. b4 Qd8 17. bxc5 Bxc5 {Badger,J (1765)-Houston Smith,D (1905) ICCF 2019 1-0 (37)}) (6. Nbd2 c5 (6... Qe7 7. e4 dxe4 8. dxe4 Nc6 (8... Rd8 9. c3 b6 10. Qc2 a5 11. Re1 Ba6 12. Bf1 Bxf1 13. Nxf1 h6 14. Be3 Qe6 15. Rad1 Nbd7 16. a4 c6 17. Kg2 b5 18. h3 Bc5 19. Re2 Rdb8 20. axb5 {Klewe,W (2291)-Ludevid i Massana,J (2118) ICCF 2015 1/2 (42)}) 9. c3 a5 10. b3 (10. Nh4 Rd8 11. Qe2 Bg4 12. Qb5 Na7 13. Qa4 g6 14. Qc2 Be6 15. Nhf3 Nd7 16. Rd1 f6 17. Nf1 Bc5 18. Be3 Nb5 19. a4 Nd6 20. b4 Bb6 21. N3d2 Kg7 {Puzanov,V (2243)-Góreczny,G (2261) ICCF 2020 1/2 (41)}) 10... Bc5 11. Qc2 b6 12. a3 Ba6 13. c4 Bb7 14. Bb2 Rfd8 15. h3 h6 16. Rfe1 Nh7 17. Nf1 Ng5 18. N1h2 {Badger,J (1765)-Thomas,J ICCF 2019 0-1 (38)}) (6... Nc6 7. c3 (7. e4 dxe4 8. dxe4 a5 9. c3 a4 10. Rb1 Be6 11. b4 axb3 12. axb3 b5 13. b4 Ra2 14. Bb2 {1-0 (14) Brotherton,T (2172)-Polyakov, E (2196) ICCF 2017}) 7... a5 8. e4 dxe4 9. Nxe4 Nxe4 10. dxe4 Qe7 11. Be3 Be6 12. Qe2 Bc5 13. Ng5 Bc8 14. Bxc5 Qxc5 15. Rfd1 f6 16. Nf3 a4 17. Ne1 a3 18. Nd3 {O'Connell,C (2381)-Salcedo Mederos,P (2380) ICCF 2018 1/2 (35)}) (6... h6 7. c4 c6 8. e4 dxe4 9. Nxe4 Nxe4 10. dxe4 c5 11. b3 Nc6 12. Nh4 Nd4 13. Nf5 Re8 14. Qh5 Bf8 15. Ne3 a5 16. Bb2 a4 17. Nd5 Bd7 18. Bxd4 {Uecker,D (2392) -Trubetskoi,R (2232) ICCF 2011 1/2 (78)}) 7. e4 (7. c3 Nc6 8. e4 d4 9. Nc4 Bc7 10. cxd4 cxd4 11. Qc2 h6 12. Bd2 a5 13. Rac1 Be6 14. a4 Nd7 15. Nh4 Nb4 16. Bxb4 axb4 17. b3 Qf6 18. Qd2 Nc5 {Klewe,W (2283)-Sazon,A (2090) ICCF 2014 1/2 (47)}) (7. c4 d4 8. e3 dxe3 9. fxe3 Nc6 10. Ng5 Bg4 11. Qb3 Rb8 12. Nde4 Nxe4 13. Nxe4 Be7 14. Nf2 Be6 15. Bd2 Qd6 16. Bc3 f5 17. Rae1 g6 18. Qd1 Rbe8 { Piersig,K (2295)-Kulakiewicz,M (2019) ICCF 2013 1/2 (50)}) 7... d4 8. Nc4 Nc6 9. Nxd6 (9. Nh4 Bc7 10. a4 Rb8 11. Nf5 h6 12. b3 a6 13. f4 exf4 14. Bxf4 Bxf5 15. Bxc7 Qxc7 16. Rxf5 b5 17. Nd2 Nd7 18. Bh3 Nde5 19. Rf2 Rfd8 20. Bf1 Qe7 { Klewe,W (2283)-Petrigin,O (2240) ICCF 2014 0-1 (54)}) 9... Qxd6 10. Nh4 Bg4 ( 10... Re8 11. Nf5 Bxf5 12. exf5 e4 13. Bg5 e3 14. fxe3 dxe3 15. Re1 e2 16. Rxe2 Qd4+ 17. Kh1 Rxe2 18. Qxe2 Re8 19. Bxf6 Rxe2 20. Bxd4 Nxd4 21. Rf1 b6 22. c3 { Brotherton,T (1890)-Tramacere,S (2053) ICCF 2016 1/2 (31)}) 11. Qd2 (11. f3 Be6 12. f4 Rfe8 (12... Rae8 13. h3 b5 14. g4 exf4 15. Bxf4 Ne5 16. Qe1 Nfd7 17. Qg3 f6 18. Nf5 Qb6 19. h4 c4 20. g5 Bxf5 21. exf5 Kh8 22. Rae1 cxd3 23. cxd3 b4 24. g6 {Klewe,W (2283)-Pérez Ferrís,M (2189) ICCF 2014 1-0 (25)}) 13. f5 Bc8 14. g4 h6 15. g5 hxg5 16. Bxg5 Bd7 17. Qf3 Kf8 18. Qh3 Rad8 19. Bxf6 Qxf6 20. Nf3 Ke7 21. Qh4 Qxh4 22. Nxh4 Rh8 {Sosa Landa,H (1652)-Lefebvre,A ICCF 2013 0-1 (53)}) 11... Be6 12. f4 Ng4 13. f5 Bc8 14. Qe2 Nf6 15. g4 Ne8 16. Nf3 b6 17. g5 a5 { Klewe,W (2195)-Rakhimov,R (2142) ICCF 2016 1-0 (68)}) 6... c6 (6... Re8 7. e4 d4 8. Ne2 (8. Nd5 Nfd7 9. c3 c6 10. Nb4 Nf6 11. Nc2 c5 12. Bd2 Nc6 13. cxd4 cxd4 14. Na3 Bf8 15. Qe2 Nd7 16. Rfc1 Nc5 17. Rc2 Bg4 18. h3 {Nagel,H (2103) -Schreurs,B (1996) ICCF 2016 0-1}) 8... c5 9. a4 Nc6 10. h3 Be6 11. Ng5 Bd7 12. f4 exf4 13. gxf4 h6 14. Nf3 Nh5 15. Bd2 Rc8 16. Qe1 Kh7 17. Qf2 g6 18. c3 { Alejos,P (2187)-Graterol,S (2204) ICCF 2018 1/2 (57)}) 7. e4 (7. h3 h6 8. e4 Re8 (8... d4 9. Ne2 Be6 10. Ne1 c5 11. f4 Nc6 12. Nf3 exf4 13. gxf4 Bc7 14. f5 Bd7 15. b4 b6 16. b5 Ne5 17. a4 a6 18. Bf4 Qe7 19. c3 Nxf3+ 20. Rxf3 {Dam, J-Massy,G (2226) ICCF 2014 0-1 (33)}) 9. Re1 (9. a4 Bc7 10. b4 a5 11. b5 Be6 12. exd5 cxd5 13. Re1 Nbd7 14. Bb2 Rc8 15. Re2 Bb6 16. Rc1 {1-0 (16) Kästner, M-Howard,I ICCF 2020}) 9... d4 10. Ne2 c5 11. Rf1 Nc6 12. Ne1 Bd7 13. f4 Rc8 14. f5 Na5 15. g4 Nh7 16. Ng3 c4 17. Rf2 c3 18. b3 Be7 {Piersig,K (2317) -Korosec,S (2307) ICCF 2012 1/2}) 7... d4 (7... dxe4 8. dxe4 (8. Nxe4 Nxe4 9. dxe4 Qe7 (9... Na6 10. Qe2 Nc5 11. Rd1 Qe7 12. Bg5 f6 13. Be3 Bg4 14. b4 Na4 15. Qd3 Bxb4 16. Qb3+ Be6 17. Qxa4 b5 18. Qa6 Qc7 19. Rdb1 Bc8 20. Qxc8 Raxc8 21. Rxb4 {Hasanagic,A-Kozarski,A ICCF 2006 1-0 (56)}) 10. Qe2 Nd7 (10... Na6 11. Rd1 f6 12. Nd2 Be6 13. Nc4 Bc5 14. c3 Rfd8 15. Rxd8+ Rxd8 16. b4 Qf7 17. Bf1 Bf8 18. Be3 Nb8 19. a4 {Alejos,P (2187)-Mavares Parra,J ICCF 2018 0-1 (66)} ) 11. Nh4 g6 12. Rd1 Nc5 13. a4 a5 14. Be3 Be6 15. Rd2 Rfd8 16. b3 Rd7 17. Rad1 {1/2 (17) O'Neill-MCAleenan,C (1956)-Sobry,S (2065) ICCF 2011}) 8... Qc7 (8... Na6 9. Nh4 (9. h3 Nc5 10. Qe2 Qc7 11. Rd1 b6 12. b4 Ne6 13. b5 c5 14. Qd3 Rd8 15. a4 Bb7 16. Nd2 c4 17. Qxc4 Rac8 18. Qxc7 Rxc7 19. Nd5 Rxc2 20. Ne3 Rcc8 { Krause,C (2362)-Grammatica,A (2354) ICCF 2017 1/2 (36)}) 9... Bg4 10. Bf3 Bh3 11. Bg2 Bg4 12. Bf3 Bh3 13. Bg2 {1/2 (13) Nagel,H (2180)-Gatto,C (2133) ICCF 2012}) 9. Bg5 Be7 10. Nh4 h6 11. Bxf6 Bxf6 12. Nf5 Be6 13. Qf3 Nd7 14. Rad1 Kh7 15. a4 g6 16. Ne3 Bg7 17. g4 Nf6 18. h4 Qc8 19. g5 {Bjazevic,P-Pivinsky,E (2433) ICCF 2005 0-1}) (7... Nbd7 8. Bg5 (8. Nh4 Nb6 9. exd5 (9. Nf5 Bxf5 10. exf5 h6 11. a3 Nc8 12. Re1 Re8 13. Bh3 Qc7 14. Bd2 Qd7 15. Rc1 a5 16. g4 b5 17. Ra1 Nb6 18. g5 hxg5 19. Bxg5 Nh7 20. Bh4 b4 {Esen,N (2208)-Makeyev,A (2087) ICCF 2006 1-0 (48)}) 9... cxd5 10. Bg5 Be6 11. Re1 h6 12. Bd2 a6 13. a3 Re8 14. b4 Rc8 15. Qc1 Qd7 16. Nf3 d4 17. Ne4 Nxe4 18. Rxe4 Bf5 19. Re1 Bxd3 { O'Callaghan,M (1680)-Mohanakrishnan,B ICCF 2010 0-1 (26)}) (8. exd5 cxd5 9. a4 Re8 10. Nd2 d4 11. Nce4 Bf8 12. a5 Rb8 13. Re1 Nxe4 14. Nxe4 b6 15. axb6 Qxb6 16. b3 Bb7 17. Ba3 Bxa3 18. Rxa3 a6 19. Nd2 Bxg2 {Alejos,P (2226)-Groot,P (2250) ICCF 2019 1/2 (30)}) 8... h6 9. Bxf6 Nxf6 10. exd5 cxd5 11. Nb5 Bb8 12. Nc3 Re8 13. Re1 Qb6 14. Rb1 Bd6 15. a3 Bg4 16. h3 Be6 17. Na4 Qc7 18. Nc3 a6 19. Qd2 {Sosa Landa,H-Nielsen,P (1856) ICCF 2011 0-1}) 8. Ne2 (8. Nb1 c5 9. Nbd2 (9. Nh4 Bc7 10. Nf5 h6 11. Qf3 Nc6 12. a4 Be6 13. Na3 a6 14. Nc4 Re8 15. Rd1 Rb8 16. h3 b5 17. axb5 axb5 18. Na3 Na5 19. Re1 Bd7 20. Nb1 c4 {Hering,H (2194)-Garnica,H (2189) ICCF 2013 0-1 (61)}) 9... Nc6 10. Nc4 Bc7 11. a4 a6 12. Nh4 Bg4 13. Bf3 Be6 14. Bd2 b5 15. Na3 Rb8 16. axb5 axb5 17. Bg5 c4 (17... h6 18. Bxf6 Qxf6 19. Bg4 c4 20. Bxe6 Qxe6 21. Qe2 c3 22. bxc3 dxc3 23. Nf3 f5 24. d4 fxe4 25. Qxe4 Qf6 26. d5 Ne7 27. Kg2 Qd6 28. Rfb1 Qc5 29. Qd3 {Andersen,J (2198)-Oger,C (2364) ICCF 2012 0-1 (31)}) 18. Nf5 h6 19. Bh4 Kh7 {Andersen,J (2198)-Crabb,N (2103) ICCF 2012 0-1 (35)}) 8... c5 9. Nd2 (9. h3 Nc6 10. Ne1 Re8 11. f4 b6 (11... a5 12. f5 b5 13. g4 h6 14. Ng3 Be7 15. Nf3 c4 16. g5 hxg5 17. Nxg5 c3 {Nagel,H (2086)-Sitorus,Y (2353) ICCF 2017 1/2 (43)}) (11... exf4 12. gxf4 Nh5 13. Nf3 g6 14. a3 a5 15. Qe1 a4 16. Bd2 Ra6 17. Rd1 Rb6 18. Bc1 f5 19. e5 Be7 20. Qf2 Be6 21. Kh2 Qd7 22. Rg1 Ng7 23. Rde1 {Alejos,P (2226) -Deskin,G (2205) ICCF 2019 0-1 (53)}) 12. Nf3 Bb7 13. b3 exf4 14. gxf4 Nh5 15. Bd2 g6 16. Qe1 f5 17. e5 Be7 18. Qf2 Qd7 19. Kh2 Nd8 20. Ng3 Ng7 {Alejos,P (2226)-Otero Rodríguez,J (2256) ICCF 2019 1/2 (37)}) (9. c4 Nc6 (9... h6 10. Bd2 Nc6 11. Nh4 a5 12. b3 Bd7 13. a3 Re8 14. Qc2 g5 15. Nf3 Qe7 16. h4 Nh7 17. hxg5 hxg5 18. Qc1 f6 19. Nh2 Nf8 20. f3 Qg7 21. Ng4 {Driessen,C (1872) -Splíchal,J (2255) ICCF 2009 0-1 (45)}) 10. a3 a6 11. b3 b5 12. Nd2 Bd7 13. f3 Rb8 14. Rb1 Qc7 15. Kh1 h5 16. f4 Ng4 17. Nf3 bxc4 18. dxc4 a5 19. h3 Nf6 20. Qd3 a4 {Azzi,R (1614)-Zhuravlev,K (2179) ICCF 2015 0-1 (33)}) (9. Nh4 Nc6 10. f4 Re8 11. fxe5 Nxe5 12. Bg5 Neg4 13. b3 Rb8 14. a4 h6 15. Bd2 b6 16. h3 Ne5 17. Qe1 Ng6 18. Nf5 Be5 19. Qf2 Qc7 20. g4 Nh7 {Brotherton,T (2172)-Oren,I (2209) ICCF 2017 1/2 (29)}) (9. Ne1 Nc6 10. f4 Ng4 11. Nf3 Bd7 12. c3 Qb6 13. fxe5 Ncxe5 14. Nxe5 Nxe5 15. Nf4 c4 16. Nd5 Qc5 17. b4 cxb3 18. axb3 Bg4 19. Qc2 dxc3+ 20. Be3 Qb5 {Seeger,N-Wegener,S ICCF 2007 1-0 (53)}) 9... Be6 (9... Nc6 10. Nc4 (10. h3 Be6 (10... Bc7 11. f4 exf4 12. gxf4 Nh5 13. Rf2 g6 14. Nb3 Qe7 15. c3 Rd8 16. cxd4 cxd4 17. Bd2 a5 18. a4 Bd7 19. Be1 Rac8 20. Nd2 Kh8 21. Nc4 Be6 22. Rc1 {Klewe,W (2225)-Shuler,J ICCF 2015 0-1 (47)}) (10... Re8 11. f4 Bc7 12. f5 h6 13. g4 Bd6 14. Ng3 b6 15. Rf2 Nh7 16. Bf1 Be7 17. Nf3 Kh8 18. Rh2 Bh4 19. Nxh4 Qxh4 20. Qf3 Bd7 21. Bd2 Rac8 22. Be1 {Berchtold,C (2312)-Foster, K (2306) ICCF 2011 1/2 (49)}) 11. f4 Rc8 12. f5 (12. b3 exf4 13. Nxf4 Qd7 14. Kh2 Bc7 15. Nf3 h6 16. Nh4 Qd6 17. Qe1 Bd7 18. Ne2 g5 19. Nf5 Bxf5 20. Rxf5 Nh5 {Klewe,W (2225)-Lushnikov,A (2286) ICCF 2015 0-1 (44)}) 12... Bd7 13. g4 h6 14. Ng3 Be7 15. Rf2 Nh7 16. Nf3 Ng5 17. Nh5 Nxf3+ 18. Rxf3 f6 19. h4 Be8 20. Rg3 Bxh5 21. gxh5 Kh8 {Verst,P (2088)-Wilmes,F (2058) ICCF 2012 1/2}) (10. f4 b5 11. Nf3 Rb8 12. Bd2 Re8 13. fxe5 Nxe5 14. Nxe5 Bxe5 15. Nf4 Bg4 16. Bf3 Bd7 17. Qe2 Qc8 18. a3 h6 19. b3 Rb6 20. Rae1 Ra6 21. Bc1 c4 {Krause,C (2362)-Brodt,A (2361) ICCF 2017 1/2 (59)}) 10... Bc7 11. a4 b6 (11... Ne8 12. f4 f6 13. f5 a6 14. Bd2 b6 15. c3 Nd6 16. Nxd6 Bxd6 17. g4 Ra7 18. c4 Kh8 19. Ng3 Bd7 20. h4 Be7 21. b3 Rb7 22. Qc1 Nb4 23. Rf3 {Alejos,P (2175)-Arambulo Urdaneta,H (2026) ICCF 2017 1/2 (33)}) (11... Be6 12. b3 Nd7 13. f4 f6 14. f5 Bf7 15. g4 a6 16. Nd2 b5 17. Rf3 Ba5 18. Rg3 Kh8 19. Nf3 c4 20. axb5 axb5 21. bxc4 bxc4 22. g5 fxg5 23. Nxg5 {Krause,C (2362)-Ludevid i Massana,J (2289) ICCF 2017 1/2 (45)}) 12. f4 Rb8 13. Bd2 Bd7 14. b3 h6 15. fxe5 Nxe5 16. Nxe5 Bxe5 17. Nf4 Qe7 18. a5 b5 19. Nd5 Nxd5 20. exd5 Rbe8 21. Qh5 {Krause,C (2362)-Cvak,R (2353) ICCF 2017 1/2 (30)}) 10. f4 (10. h3 Nfd7 11. f4 f6 12. b3 Nc6 13. Nf3 Bf7 14. Bd2 exf4 15. gxf4 a5 16. a4 Bc7 17. Ng3 Nb4 18. h4 Qe8 19. Bh3 g6 20. Kh1 Kh8 21. Rg1 Ra6 {Alejos,P (2006)-Verenzuela,J (2201) ICCF 2014 1/2 (47)}) (10. b3 Nc6 11. Bb2 b5 12. a3 Rb8 13. a4 a6 14. Qc1 Qd7 15. f4 Bh3 16. fxe5 Bxe5 17. Bxh3 Qxh3 18. Rf5 Ng4 19. Nf1 Ne7 20. Rf3 f5 21. Nf4 {Ott,P-Ramsey,T ICCF 2017 0-1 (28)}) 10... Nc6 11. b3 a6 12. a4 b5 {Alejos,P (2148)-Nigro Monasterios,N (2059) ICCF 2016 1/2 (27)}) (1. g3 d5 (1... e5 2. Bg2 (2. Nf3 e4 3. Nd4 (3. Bg2 exf3 4. Bxf3 Nf6 5. O-O Be7 6. d4 O-O 7. Nc3 d5 8. Bg5 Be6 9. Bxf6 Bxf6 10. e3 Nc6 { 0-1 (10) Baydashkin,A (2309)-Kruk,S (1695) ICCF 2018}) 3... c5 4. Nb3 (4. Nb5 d5 5. Bg2 a6 6. N5a3 Nf6 7. d3 exd3 8. c4 d4 9. Qxd3 Be7 10. O-O Nc6 11. Nd2 O-O 12. Nc2 Be6 13. Bxc6 bxc6 14. e3 dxe3 15. Qxe3 Qd7 {Trani,F (2015) -Sadowski,M (2048) ICCF 2006 0-1 (38)}) 4... c4 5. Nd4 Nc6 6. c3 Bc5 7. Nxc6 dxc6 8. Bg2 Nf6 9. b4 Be7 10. Na3 Be6 11. Nc2 h5 12. h4 O-O 13. a4 Ng4 { Alejos,P (2148)-Cubides,A (2101) ICCF 2016 0-1 (36)}) (2. e3 d5 3. Bg2 (3. Nf3 e4 4. Ne5 Bd6 5. d4 Bxe5 6. Be2 Bd6 7. f4 Nf6 8. Nc3 Bh3 9. b3 Nc6 10. a3 a6 11. a4 Bb4 12. Ba3 Bxc3+ 13. Kf2 g5 14. Rb1 gxf4 {MacCaellich-Young, M-Selschotter,J ICCF 2006 0-1}) 3... Bf5 (3... Bg4 4. Ne2 Nc6 (4... Nf6 5. O-O Be7 6. h3 Be6 7. d4 e4 8. Nf4 O-O 9. Nxe6 fxe6 10. c4 c5 11. Kh2 Nc6 12. Nc3 Qd7 13. cxd5 exd5 14. dxc5 Bxc5 15. Qb3 Qf7 16. Bd2 {Dmitrieva,G (2377) -Kotyurgin,I (2226) ICCF 2018 1/2}) (4... Bf3 5. O-O Bxg2 6. Kxg2 Qd7 7. d4 Nc6 8. b3 O-O-O 9. Bb2 h5 10. h4 e4 11. c4 Kb8 12. Nf4 g5 13. hxg5 h4 14. Rh1 Qg4 15. Kh2 hxg3+ 16. Kg2 {Kotyurgin,I (2226)-Makina,E ICCF 2018 0-1 (25)}) 5. O-O Qd7 6. f3 Bh3 7. d4 (7. Bxh3 Qxh3 8. d4 O-O-O 9. Nbc3 h5 10. dxe5 g5 11. Kh1 Nxe5 12. Ng1 Qe6 13. f4 h4 14. fxe5 hxg3 15. Nf3 Be7 16. Kg1 gxh2+ 17. Nxh2 Nh6 18. Rf2 Kb8 {Kruk,S (1695)-Kudryavtsev,Y (2067) ICCF 2018 0-1 (30)}) 7... O-O-O 8. dxe5 Nxe5 9. Bxh3 Qxh3 10. Nf4 Qd7 11. Kg2 h5 12. h4 Nf6 13. Nc3 a6 14. e4 dxe4 {Shevchenko,A (2195)-Kudryavtsev,Y (2067) ICCF 2018 0-1 (64)}) (3... d4 4. Ke2 (4. Kf1 dxe3 5. fxe3 Bd6 6. Nh3 c6 7. d4 exd4 8. Qxd4 Nf6 9. Bxc6+ Kf8 10. Bg2 h5 11. Kg1 Nc6 12. Qd2 Qe7 13. Nf4 h4 14. Nc3 h3 15. Bf3 Ne5 {Shevchenko,A (2195)-Konovalenko,A (2110) ICCF 2018 0-1}) 4... dxe3 5. dxe3 Bd6 6. f4 exf4 7. gxf4 Nh6 8. Nf3 O-O 9. Re1 Nf5 10. Nbd2 Nc6 11. Kf2 Re8 12. Nf1 Nh4 13. Ng3 Nxg2 14. Kxg2 f6 15. e4 {Trofimov,V (2415)-Kozlov,A (2382) ICCF 2017 1/2}) ( 3... e4 4. c3 Nc6 5. d4 Nf6 6. Nd2 Bg4 7. f3 Bxf3 8. Bxf3 exf3 9. Ngxf3 Ne4 10. O-O Bd6 11. Nxe4 Qe7 12. Nxd6+ Qxd6 13. Re1 f6 14. Qe2 O-O-O 15. a3 {Boni, M-Leckinger,M ICCF 2007 0-1 (50)}) (3... Bc5 4. Ne2 Bxe3 5. O-O Bb6 6. d4 Ne7 7. dxe5 O-O 8. Nf4 Bf5 9. Nxd5 Nxd5 10. Bxd5 c6 11. Bb3 Nd7 12. Bf4 Bc7 13. Qf3 Nxe5 14. Bxe5 Be4 {0-1 (14) Kotyurgin,I (2226)-Kokarev,A (1997) ICCF 2018}) 4. d3 (4. Kf1 Nf6 5. Nc3 c6 6. d3 Bd6 7. e4 Bg4 8. Bf3 Bxf3 9. Qxf3 O-O 10. exd5 Qd7 11. Kg2 Bb4 12. dxc6 Nxc6 13. Nge2 Rae8 14. Bg5 Re6 15. Rhd1 {Eliseev,N (2171)-Matyukhin,S (2493) ICCF 2019 0-1 (34)}) 4... Nf6 5. Qd2 Nc6 6. Ne2 Bd6 7. O-O Qd7 8. Nbc3 Bh3 9. Kh1 a6 10. Ng1 Bxg2+ 11. Kxg2 O-O 12. a3 d4 13. exd4 Nxd4 {Armstrong,J (1484)-Gilbert,R (1760) ICCF 2018 0-1 (35)}) (2. b3 Bc5 3. Bb2 d6 4. e3 Nf6 5. Bg2 c6 6. Ne2 O-O 7. O-O Bg4 8. a3 a5 9. d4 Bxe2 10. Qxe2 exd4 11. exd4 Bb6 12. Nc3 Bxd4 13. Na4 Bxb2 {Barros,L-Costa,H (1672) ICCF 2011 1-0 (65)}) (2. f4 exf4 3. Nf3 fxg3 4. hxg3 Nf6 5. c3 d5 6. d4 Bd6 7. Bf4 O-O 8. Nbd2 Re8 9. Qc2 h6 10. O-O-O Ng4 11. Rh4 Bxf4 12. gxf4 Ne3 13. Qd3 Bf5 { Sanchez Aguirregomezcorta,X (1440)-Sainz Cortón,E ICCF 2017 0-1}) 2... Nf6 ( 2... Bc5 3. c3 (3. Nh3 Ne7 4. O-O d6 5. e3 Be6 6. d4 Bb6 7. dxe5 d5 8. Nf4 O-O 9. e4 dxe4 10. Qxd8 Rxd8 11. Nxe6 fxe6 12. Bxe4 Nbc6 13. Kg2 h6 14. Nd2 Rab8 { Shevchenko,A (2205)-Chernov,I (2147) ICCF 2018 1-0}) (3. e3 Nf6 4. Ne2 Bxe3 5. O-O Bb6 6. d4 exd4 7. Nxd4 O-O 8. Nc3 Nc6 9. Nxc6 dxc6 10. Qxd8 Rxd8 11. Na4 Bf5 12. c3 Bd3 13. Nxb6 cxb6 14. Be3 Ng4 {Kruk,S (1695)-Shevchenko,A (2195) ICCF 2018 0-1}) 3... Nc6 4. b4 (4. e4 Nge7 5. Ne2 O-O 6. d4 exd4 7. cxd4 Bb4+ 8. Nbc3 d6 9. O-O Bg4 10. Qd3 Re8 11. f3 Bh5 12. Nf4 Bg6 13. h4 h6 14. Be3 Bh7 15. Ncd5 Nxd5 {Kanagenthiran,P-Korab,B (1626) ICCF 2015 1-0 (45)}) 4... Bb6 5. a4 a6 6. a5 Ba7 7. d3 Nf6 8. Nf3 d5 9. O-O O-O 10. Qc2 Re8 11. e4 Bg4 12. Nbd2 Qd7 13. exd5 Nxd5 14. Ne4 {Ylönen,O (1686)-Król,W (2388) ICCF 2010 0-1 (54)}) ( 2... c6 3. Nf3 e4 4. Nh4 d5 5. d3 exd3 6. cxd3 Nf6 7. Bg5 Be7 8. O-O h6 9. Bxf6 Bxf6 10. Nf3 Bxb2 11. Nbd2 Bxa1 12. Qxa1 O-O 13. h4 Bg4 14. Kh2 {Armstrong,J (1515)-Gilbert,R (1682) ICCF 2020 0-1 (55)}) (2... h5 3. d4 exd4 4. Nf3 Nc6 5. Nxd4 Bc5 6. Be3 Bb6 7. Nc3 Nf6 8. h3 d5 9. Qd2 Nxd4 10. Bxd4 c6 11. O-O-O O-O 12. Qg5 Re8 13. e4 dxe4 14. Bxb6 {Brotherton,T (2059)-Taylor,W (2029) ICCF 2017 1-0}) 3. Nf3 (3. c3 Nc6 (3... Bc5 4. Qb3 O-O 5. Bxb7 Bxb7 6. Qxb7 Nc6 7. Qb5 Bb6 8. Qd3 e4 9. Qc2 d5 10. d4 Ng4 11. h3 Nf6 12. Bg5 h6 13. Bf4 Nh5 14. Be3 f5 15. Nd2 {Gradisar,M-Jezersek,M ICCF 2006 1-0}) 4. Qa4 Bd6 5. d3 O-O 6. Kf1 a6 7. Bd2 b5 8. Qb3 Na5 9. Qc2 c6 10. Be1 Ng4 11. h3 Nf6 12. Nd2 Bc5 13. Rd1 d5 14. e3 d4 {Ipekyilmaz,E (1532)-Sweetland,D (1384) ICCF 2015 1-0 (26)}) ( 3. d3 Be7 (3... h6 4. c4 Be7 5. Nc3 Ng4 6. Nf3 Bc5 7. e3 O-O 8. h3 Nf6 9. Nxe5 {1-0 (9) Brotherton,T (1950)-Villalobos Aguinaga,M ICCF 2016}) 4. e3 d5 5. d4 e4 (5... Nc6 6. b3 O-O 7. Bb2 {1-0 (7) Ipekyilmaz,E (1665)-Chorley,N ICCF 2016} ) 6. Ne2 Nc6 7. b3 Bg4 8. Bb2 Qd7 9. Nd2 O-O-O 10. a3 h5 11. h3 Bf5 12. Rc1 g5 13. b4 b5 14. Nb3 Rhg8 {Ipekyilmaz,E (1665)-Dumitrica,N ICCF 2016 1-0 (30)}) ( 3. a3 d5 4. Nc3 (4. c4 c6 (4... dxc4 5. Qa4+ Bd7 (5... c6 6. Qxc4 Be6 7. Qc2 Nbd7 8. d3 Qb6 9. Be3 Bc5 10. Bxc5 Nxc5 11. Nd2 Ng4 12. Nh3 Nb3 13. Nxb3 Bxb3 14. Qc3 Be6 15. O-O f6 16. Rfc1 {Guillot,M-Steinman,A (1868) ICCF 2010 0-1 (29) }) (5... Nbd7 6. Qxc4 Nc5 7. Qc2 Be6 8. Nc3 Nb3 9. Rb1 Nd4 10. Qa4+ c6 11. b4 Nd5 12. Qd1 a5 {0-1 (12) Guillot,M-Everitt,G (2058) ICCF 2010}) 6. Qxc4 Nc6 7. e3 e4 8. f4 Na5 9. Qc3 c5 10. Qc2 c4 11. Nc3 Nb3 12. Rb1 Bc6 13. Nge2 Qe7 14. O-O O-O-O 15. Nd1 b5 16. Nf2 {Serovey,M (2044)-Starodubtsev,V (2337) ICCF 2018 0-1}) (4... Be6 5. Nf3 Nbd7 6. cxd5 Bxd5 7. Nc3 Bc6 8. d3 a6 9. O-O Be7 10. b4 b5 11. Bb2 O-O 12. Rc1 Rc8 13. Qb3 Nb6 {Guillot,M-Rezack,T ICCF 2010 0-1}) 5. cxd5 cxd5 6. Nc3 Nc6 7. d3 Be6 8. Bg5 Be7 9. Nf3 h6 10. Bxf6 Bxf6 11. e3 O-O 12. O-O Re8 13. Nd2 d4 14. Ne2 dxe3 {Gradisar,M-Gorsek,G (1748) ICCF 2006 0-1 (29)}) 4... Bf5 5. d3 Bc5 6. Bg5 Be7 7. Bxf6 {1-0 (7) Gradisar,M-Zalig,T ICCF 2005}) (3. b3 Bc5 4. e3 d5 5. Ne2 O-O 6. Bb2 d4 7. exd4 exd4 8. d3 Re8 9. O-O Nc6 10. Re1 Bg4 11. h3 Bf5 12. Nd2 a5 13. a3 Nd5 14. Ne4 Bb6 {Bush,F-Wiesmann, D ICCF 2006 1/2 (43)}) (3. Kf1 d5 4. c4 (4. d3 Be7 (4... h6 5. c4 (5. Nf3 Bd6 6. e4 dxe4 7. dxe4 O-O 8. Nc3 Nc6 9. Kg1 Bb4 10. Qxd8 Rxd8 11. h3 Bxc3 12. bxc3 Nxe4 13. Kh2 Nd6 14. g4 Nc4 15. Bf1 Be6 16. Bd3 Kh8 {Nekhaev,A (2495) -Kazantsev,R (2428) ICCF 2018 0-1 (57)}) 5... d4 6. Nf3 Bd6 7. b4 (7. c5 Bxc5 8. Qa4+ Kf8 9. Nxe5 Qe7 10. Nf3 Nc6 11. Qd1 g6 12. Kg1 Bf5 13. h3 Re8 14. Kf1 a5 15. Na3 Be6 16. Nc2 Bd5 17. Ncxd4 Nxd4 {Larin,I (2371)-Kazantsev,R (2429) ICCF 2018}) 7... c6 8. c5 Bc7 9. g4 Kf8 10. h3 Nd5 11. Bd2 a5 12. bxa5 Nd7 13. Kg1 Bxa5 14. Bxa5 Qxa5 15. a4 g6 16. Nbd2 {Nekhaev,A (2489)-Eliseev,N (2100) ICCF 2018 0-1 (34)}) (4... Bd6 5. Bg5 c6 6. e4 dxe4 7. dxe4 O-O 8. Nd2 b6 9. Bh3 Ba6+ 10. Ne2 h6 11. Be3 Bb4 12. c3 Bc5 13. Bxc5 Nxe4 14. Kg2 Nxc5 15. b4 Nd3 16. Nc1 {Nekhaev,A (2495)-Matyukhin,S (2505) ICCF 2018 0-1 (59)}) (4... c6 5. h3 Bd6 6. e4 Be6 7. Qe2 O-O 8. Nf3 Re8 9. Kg1 h6 10. b3 d4 11. h4 a5 12. Kh2 Ng4+ 13. Kg1 a4 14. Nbd2 b5 15. Bh3 axb3 16. cxb3 {Nekhaev,A (2495)-Trofimov,V (2422) ICCF 2018 0-1 (53)}) 5. Nc3 (5. Nf3 Nc6 6. e3 O-O 7. Nc3 e4 8. Nd4 Nxd4 9. exd4 Bg4 10. Ne2 c5 11. h3 Bxe2+ 12. Qxe2 cxd4 13. Kg1 Re8 14. Kh2 h6 15. c3 Bc5 16. Rf1 Kh8 {Nekhaev,A (2495)-Poleshchuk,N (2482) ICCF 2018 0-1}) 5... Be6 6. Nf3 Nc6 7. Ng5 O-O 8. Nxe6 fxe6 9. Bh3 Qd6 10. a3 e4 11. Kg2 Rae8 12. Rf1 a6 13. dxe4 d4 14. e5 Qxe5 15. Bf4 Qh5 {Neborak,Y (2306)-Poleshchuk,N (2482) ICCF 2018 0-1}) (4. d4 exd4 5. Qxd4 Nc6 (5... Be6 6. Nh3 Nbd7 7. Nf4 Bc5 8. Qd1 O-O 9. Nc3 c6 10. e3 Ne5 11. b3 d4 12. Na4 Bg4 13. Qe1 dxe3 {0-1 (13) Neborak,Y (2306)-Matyukhin,S (2505) ICCF 2018}) 6. Qd3 Bc5 7. Nc3 Be6 8. Nxd5 O-O 9. Be3 Ne5 10. Qd1 Be7 11. Nf4 Qe8 12. Ke1 Nfg4 13. Qd4 Rd8 14. Qxa7 Qb5 15. Qxb7 Qa5+ {Kruk,S (1695)-Konovalenko,A (2110) ICCF 2018 0-1}) (4. e3 Be7 5. Ne2 Nc6 6. d4 O-O 7. h3 Re8 8. Kg1 Bd6 9. b3 h6 10. Bb2 Bf5 11. dxe5 Nxe5 12. Kh2 h5 13. Rf1 h4 14. Kg1 c6 15. f4 Ng6 {Shevchenko,A (2189)-Trofimov,V (2419) ICCF 2019 1-0}) 4... dxc4 (4... d4 5. d3 Be7 6. Nf3 O-O (6... Nc6 7. b4 Nxb4 8. Nxe5 O-O 9. a3 Na6 10. Nf3 Nc5 11. a4 a5 12. Bb2 Ne6 13. Kg1 Ra6 14. Na3 Bc5 15. Nc2 Rd6 16. h3 Re8 17. Bc1 Kf8 18. Kh2 {Nekhaev,A (2489)-Kazantsev,R (2429) ICCF 2018 1/2 (65)}) 7. Nxe5 Re8 8. h3 Bd6 9. Nf3 c5 10. Nbd2 Nc6 11. Kg1 Qe7 12. Ng5 Bxg3 { 1/2 (12) Dmitrieva,G (2377)-Trofimov,V (2418) ICCF 2018}) (4... Bd6 5. cxd5 O-O 6. Nc3 c6 7. dxc6 Nxc6 8. d3 Kh8 9. Nf3 h6 10. h3 Be6 11. Kg1 Qb6 12. g4 Rad8 13. g5 Nh5 14. Ne4 Be7 15. Be3 Qxb2 16. gxh6 {Dmitrieva,G (2377)-Larionov,S ICCF 2018 1-0}) 5. Qa4+ (5. b3 Bc5 6. Bb2 O-O 7. bxc4 Nc6 8. Bxc6 bxc6 9. h3 Ne4 10. e3 Rb8 11. Bc3 f5 12. Bxe5 Re8 13. Nf3 Rxb1 {0-1 (13) Poleshchuk,N (2482)-Matyukhin,S (2505) ICCF 2018}) 5... Qd7 6. Qxc4 Be7 7. Nf3 O-O 8. Nxe5 Qd6 9. Nf3 Be6 10. Qc2 Nc6 11. Kg1 Nb4 12. Qd1 Nxa2 13. Nc3 Nxc3 14. bxc3 a5 { Larin,I (2371)-Manannikova,L (1704) ICCF 2018}) 3... Nc6 (3... Bd6 4. d3 O-O 5. Bg5 h6 6. Bd2 a5 7. O-O Bb4 8. Bxb4 d6 9. Bd2 Be6 10. Kh1 c5 11. Qe1 b6 12. Ng1 d5 13. Nc3 Ng4 14. f3 Nf6 15. a3 {Armstrong,J (1481)-Milton,G ICCF 2019 1-0 (35)}) (3... e4 4. Nd4 (4. Ng1 e3 5. Kf1 exf2 6. Kxf2 Ng4+ 7. Ke1 Qf6 8. Nf3 Kd8 9. d4 Qg6 10. Nh4 Qb6 11. Qd3 Nc6 12. c3 g6 13. Kd2 f5 14. Ke1 Bg7 15. Na3 d6 {Rychkov,A-Kudryavtsev,Y (2067) ICCF 2018 0-1 (32)}) 4... c5 5. Nb3 c4 6. Nd4 Nc6 7. Nxc6 dxc6 8. b3 h5 9. Bb2 h4 10. bxc4 Be6 11. Nc3 Qd4 12. Nd5 Qxb2 13. Nc7+ Kd8 14. Nxa8 Qe5 15. Rb1 {Sartori,D (1968)-Reed,A (1967) ICCF 2010 0-1 (29)}) 4. O-O Be7 (4... d6 5. d3 Be7 6. Kh1 O-O 7. Ng1 Bd7 8. Nd2 Ne8 9. Re1 Nf6 10. Nf1 g6 11. e3 Kg7 12. e4 Rh8 13. Be3 h5 14. Qd2 h4 15. a3 Rh7 16. c3 {Armstrong,J (1560)-Longden,R (1727) ICCF 2013 0-1 (63)}) 5. d4 (5. Kh1 O-O 6. d3 d5 7. Ng1 Be6 8. Nd2 Qd7 9. e3 Bg4 10. f3 Bf5 11. e4 dxe4 12. dxe4 Be6 13. c3 Rad8 14. Qe2 a6 15. b3 Bc5 16. Rd1 Bxg1 {Armstrong,J (1557)-Paris Mellado,J (1578) ICCF 2013 1/2 (59)}) 5... e4 6. Ne5 d6 7. Nxc6 bxc6 8. Nc3 d5 9. f3 exf3 10. exf3 O-O 11. Qd3 c5 12. Re1 Be6 13. Be3 {Driessen,C (1872) -Klinkers,R ICCF 2009 1/2 (47)}) (1... Nc6 2. Bg2 e5 (2... Rb8 3. b3 Nf6 4. Bb2 g6 5. a4 a5 6. h4 Bg7 7. Na3 O-O 8. Nh3 d6 9. d3 h5 10. Ng5 e5 11. Nb5 Ng4 12. Qd2 Bh6 13. e3 Bxg5 14. hxg5 {Reid,W (1268)-Barnard,R ICCF 2020 0-1 (37)}) 3. Bxc6 (3. e3 d5 4. Kf1 (4. Ne2 Be6 5. O-O Qd7 6. Nbc3 (6. d4 f6 7. c4 O-O-O 8. Nbc3 exd4 9. exd4 dxc4 10. d5 Bg4 11. f3 Ne5 12. fxg4 Bc5+ 13. Kh1 Nxg4 14. Nf4 Nf2+ 15. Rxf2 Bxf2 16. Qc2 Bb6 17. Bh3 {1-0 (17) Shevchenko,A (2195)-Chernov,I (2140) ICCF 2018}) 6... O-O-O 7. d4 e4 8. Nf4 h5 9. Nxe6 fxe6 10. f3 exf3 11. Bxf3 Nf6 12. Kh1 Be7 13. a3 g5 14. e4 g4 15. exd5 {Kruk,S (1695)-Chernov,I (2140) ICCF 2018 1-0 (25)}) 4... Nf6 5. d4 h5 6. dxe5 Nxe5 7. f4 Nc4 8. b3 Nb6 9. Bxd5 Nfxd5 10. Qxd5 Ke7 11. Ba3+ Ke8 12. Qxd8+ Kxd8 13. Bxf8 Rxf8 14. Kf2 c6 {Nekhaev,A (2489)-Rumyantsev,V (2166) ICCF 2018 1-0 (41)}) (3. d3 f5 4. Nf3 Nf6 5. O-O d5 6. c4 dxc4 7. Qa4 Bd7 8. Qxc4 Qe7 9. Bg5 O-O-O 10. Nc3 Be6 11. Qb5 a6 12. Qa4 h6 13. Bxf6 Qxf6 14. a3 Qf7 {Sosa Landa,H-Robida,P (1958) ICCF 2011 0-1 (25)}) 3... bxc6 4. d3 c5 (4... Bc5 5. e3 d6 6. e4 f5 7. Qe2 fxe4 8. dxe4 Nf6 9. Bg5 Rb8 10. Bxf6 Qxf6 11. f3 Rxb2 12. Qd3 O-O 13. Nd2 Rb6 14. Ne2 Ba6 15. Qc3 Qh6 16. f4 {Ipekyilmaz,E (1700)-Dreisch,J (2031) ICCF 2017 0-1 (43)}) 5. Nf3 d6 6. O-O Bh3 7. Re1 Be7 8. Nc3 Nf6 9. Ng5 {1-0 (9) Strelecky,R (1581) -Riley,K (1462) ICCF 2017}) (1... g6 2. Bg2 (2. b3 Bg7 3. Nc3 (3. c3 Nf6 4. Bg2 O-O 5. Nf3 d6 6. O-O c5 7. d3 Nc6 8. d4 Bf5 9. Ba3 Qa5 10. e3 Bxb1 11. Rxb1 Qxa3 12. Qd2 d5 13. Ne1 Ne4 14. Qd3 cxd4 {Gorlevsky,A-Dunne,S (2095) ICCF 2010 0-1 (33)}) 3... Nf6 4. Nh3 O-O 5. Nf4 d5 6. Bg2 d4 7. Ne4 Nxe4 8. Bxe4 e5 9. Nd3 Re8 10. Nc5 c6 11. O-O f5 12. Bg2 e4 13. c4 d3 {Coope,D (1925)-Beckett,P (2025) ICCF 2016 1/2 (74)}) (2. a4 Bg7 3. Bg2 c5 4. Na3 Nc6 5. Rb1 Nf6 6. h4 d5 7. Nh3 e5 8. b3 O-O 9. Bb2 h6 10. c4 d4 11. d3 Bg4 12. f3 Bd7 13. e4 dxe3 { Reid,W (1268)-Lanning,R ICCF 2020 0-1 (32)}) (2. c3 Bg7 3. d3 c5 4. Bg2 Nf6 5. Qc2 O-O 6. Bg5 d5 7. Nd2 Nc6 8. Nb3 b6 9. Nf3 h6 10. Bd2 e5 11. e4 c4 12. dxc4 dxe4 13. Ng1 Ba6 {Wilshusen,H (1625)-Hanegby,A (2074) ICCF 2014 0-1}) (2. d4 d5 3. Bg2 Bg7 4. e3 Nf6 5. Bh3 Bxh3 6. Nxh3 O-O 7. Nc3 Nc6 8. a3 a6 9. b4 b5 10. O-O Qd7 11. Nf4 Rfe8 12. Qf3 e5 13. Nfxd5 Nxd5 {Lucan,Z (1544)-Ptácek,J (1761) ICCF 2015 0-1 (25)}) (2. h4 Bg7 3. Bg2 Nf6 4. a4 d5 5. Na3 e5 6. b3 O-O 7. Bb2 Nc6 8. Nh3 Bg4 9. d3 Nd4 10. Qd2 Nxe2 11. Bxe5 Re8 12. d4 Nd7 13. Nf4 Nxd4 { Reid,W (1294)-Frostad,J ICCF 2019 0-1}) 2... Bg7 3. d3 d5 (3... e6 4. Nf3 Nf6 5. e4 O-O 6. e5 Ne8 7. O-O Nc6 8. d4 f6 9. exf6 Nxf6 10. Re1 d6 11. h3 a6 12. c4 Kh8 13. Nc3 Bd7 14. d5 exd5 15. cxd5 {Hering,H (2193)-Dantas,A (1592) ICCF 2012 1-0 (30)}) 4. e3 (4. Nd2 e5 5. c3 Ne7 6. e4 d4 7. c4 O-O 8. Qc2 a5 9. Ngf3 Nbc6 10. a3 f5 11. O-O a4 12. exf5 Bxf5 13. Ne4 b6 14. Bg5 Qd7 15. Rae1 Bxe4 { Regan,D-Corbin,J ICCF 2019 1-0 (45)}) 4... e5 (4... Nf6 5. d4 O-O 6. b3 c5 7. Bb2 cxd4 8. exd4 Nc6 9. Nd2 Bf5 10. a3 Rc8 (10... Qb6 11. Ne2 Rfd8 12. Nf1 Rac8 13. Ne3 g5 14. Nxf5 e6 15. Nxg7 Kxg7 16. Qd2 h6 17. f3 Qc7 18. Bc3 Qd7 19. g4 Nh7 20. f4 f6 21. Ng3 Rf8 22. f5 {Ipekyilmaz,E (1700)-Ciruelos Clerencia,J (1740) ICCF 2017 1-0 (28)}) 11. Ngf3 Qb6 12. Rc1 Ng4 13. h3 Nxf2 14. Kxf2 Nxd4 15. Nxd4 Bxd4+ 16. Bxd4 {Ipekyilmaz,E (1665)-Kostanjsek,Z (2283) ICCF 2016 0-1 (60)}) 5. d4 e4 6. b3 Nd7 7. Bb2 c5 8. Nd2 Qe7 9. c3 Ngf6 10. Ne2 O-O 11. Ba3 b6 12. Rc1 b5 13. c4 {Ipekyilmaz,E (1552)-Richardson,D (1706) ICCF 2016 1-0 (39)}) (1... d6 2. Bg2 Nf6 (2... Nd7 3. b3 c6 4. Bb2 Qc7 5. c4 Ngf6 6. d4 e5 7. dxe5 dxe5 8. e3 Bd6 9. Ne2 a5 10. Nbc3 Nc5 11. e4 Be6 12. O-O Rd8 13. Qc2 O-O 14. h3 {Boucher,B (1763)-Humbert,P (1058) ICCF 2020 1-0 (37)}) (2... c6 3. d3 g6 4. a3 Bg7 5. c4 Nf6 6. Nf3 O-O 7. O-O Bg4 8. h3 Bxf3 9. Bxf3 Nbd7 10. Nc3 Qc8 11. e4 Qc7 12. Be3 Ne5 13. Bg2 Rad8 14. f4 {Brotherton,T (1980)-Göbel,M (1600) ICCF 2012 1-0}) 3. c3 g6 4. Qa4+ (4. Nf3 Bg7 5. Ng5 O-O 6. O-O e5 7. d3 c6 8. Nf3 b6 9. Bg5 Nbd7 10. Kh1 Bb7 11. Qc1 Qc7 12. Ng1 Rab8 13. Bh3 c5+ 14. e4 Ba6 15. c4 b5 {Armstrong,J (1506)-Kearns,A (1428) ICCF 2020 1-0 (93)}) 4... c6 (4... Bd7 5. Qb3 Bc6 6. Bxc6+ bxc6 7. Qb7 Nbd7 8. Qxc6 Bh6 9. b3 O-O 10. Bb2 Ne5 11. Qg2 Qb8 12. Na3 c5 13. Nf3 d5 14. Nxe5 Qxe5 15. f3 Rab8 16. f4 { Ipekyilmaz,E (1532)-De La Forét,F (1624) ICCF 2015 1-0 (31)}) 5. d3 Bg7 6. Kf1 O-O 7. Bd2 Nbd7 8. Be1 e5 9. Nd2 Qc7 10. Rd1 Re8 11. h3 d5 12. g4 Nc5 13. Qc2 { Ipekyilmaz,E (1532)-Wilson,N (1527) ICCF 2015 1-0 (45)}) (1... g5 2. Bg2 (2. Nc3 Bg7 3. d4 c5 4. d5 h6 5. Nf3 Bxc3+ 6. bxc3 d6 7. c4 Bf5 8. Bb2 Nf6 9. Nd2 Nbd7 10. e4 Bg6 11. Bg2 Bh5 12. f3 Qa5 13. O-O O-O {Schmielewski,F-Desquiens,S (1995) ICCF 2012 1/2 (42)}) (2. d3 Bg7 3. Qd2 f6 4. Nc3 d5 5. Bg2 e6 6. b3 b6 7. Bb2 Bb7 8. e3 c5 9. O-O-O Nc6 10. f4 h6 11. Bf3 Nge7 12. Bh5+ Kd7 13. Nf3 f5 {Randall,A-Dudeney,K (1594) ICCF 2020 1/2 (50)}) 2... Bg7 3. Kf1 Nf6 4. d4 (4. Nf3 g4 5. Nh4 d5 6. h3 gxh3 7. Bxh3 Bxh3+ 8. Rxh3 Qd7 9. Rh1 Kf8 10. d3 c5 11. Nd2 Nc6 12. Kg1 Ng4 13. c3 Rd8 14. Ndf3 Bf6 15. Qc2 h5 {Shevchenko,A (2195) -Kokarev,A (1997) ICCF 2018 1/2 (29)}) 4... h6 5. e4 d6 6. Ne2 O-O 7. Nbc3 c5 8. dxc5 dxc5 9. Qxd8 Rxd8 10. h4 g4 11. Be3 Nfd7 12. Rd1 Nc6 13. Kg1 {Kruk,S (1695)-Kokarev,A (1997) ICCF 2018 0-1 (39)}) (1... c5 2. Bg2 (2. b3 Nc6 (2... e6 3. Bg2 Nf6 4. Bb2 Be7 5. a4 Nc6 6. h4 O-O 7. Nh3 d5 8. Na3 e5 9. d3 Ng4 10. Qd2 Qb6 11. Bxd5 Nb4 12. Nc4 Qf6 13. e3 Nxd5 14. O-O-O {Reid,W (1210) -Wiesbrock,H (1369) ICCF 2020 0-1 (42)}) (2... Nf6 3. Bg2 d5 4. Bb2 e6 5. a4 Nc6 6. h4 Bd6 7. Nh3 O-O 8. Na3 e5 9. c4 d4 10. d3 Bf5 11. f4 Re8 12. Qd2 e4 13. O-O-O Nb4 14. Kb1 {Reid,W (1268)-O'Brien,W ICCF 2020 1-0}) 3. Bg2 d5 4. Bb2 e5 5. a4 Nf6 6. h4 Bd6 7. Na3 e4 8. Nh3 O-O 9. c4 d4 10. Ng5 Re8 11. d3 e3 12. f4 Nh5 13. Ne4 Rxe4 {Reid,W (1341)-McNamara,S (1988) ICCF 2019 0-1}) 2... Nc6 ( 2... Qc7 3. d3 Nf6 4. e4 d6 5. Nf3 g6 6. O-O {1-0 (6) Badger,J (1730)-Infante Mechato,P ICCF 2019}) (2... g6 3. d4 cxd4 4. Qxd4 Nf6 5. e4 Nc6 6. Qc4 Bg7 7. e5 Nxe5 8. Qb3 d5 9. h3 O-O 10. Bg5 Ne4 11. h4 Nc4 12. c3 Nc5 13. Qc2 Bf5 14. Qc1 {Chugg,M (1275)-Chlubna,J (1591) ICCF 2019 0-1 (28)}) 3. e3 (3. c3 d5 4. Nf3 e5 5. O-O Nf6 6. d3 h6 7. Nbd2 Be6 8. e4 d4 9. Nc4 Nd7 10. Nfd2 Be7 11. f4 O-O 12. cxd4 cxd4 13. f5 Bxc4 14. Nxc4 a5 {Domenche Redondo,F (1778)-Alascio López,A ICCF 2019 0-1 (37)}) 3... d5 (3... e6 4. Nc3 d5 5. d3 Nf6 6. Bd2 Be7 7. Nf3 O-O 8. O-O d4 9. Qe2 dxc3 10. bxc3 b6 11. Rfe1 Bb7 12. c4 Rb8 13. Bc3 Qd7 14. Ne5 Nxe5 15. Bxe5 {Boni,M-Smith,M ICCF 2007 0-1 (31)}) 4. Ne2 Nf6 5. b3 h5 6. Bb2 h4 7. Bxf6 exf6 8. Nbc3 Be6 9. Nf4 d4 10. Nxe6 fxe6 11. Bxc6+ bxc6 12. Na4 hxg3 13. fxg3 {Molia,L-Jones,C (1762) ICCF 2012 0-1 (28)}) (1... b6 2. Bg2 Nc6 3. Nc3 (3. c4 Bb7 4. Nc3 e6 5. Nf3 Ne5 6. d3 Nxf3+ 7. exf3 g6 8. d4 Bg7 9. O-O Ne7 10. Re1 d5 11. Bg5 dxc4 12. Qa4+ Qd7 13. Qxc4 Nd5 14. f4 O-O { Kolodziejski,M (2203)-Grochowski,M (2252) ICCF 2010 0-1 (42)}) 3... Bb7 4. d4 f5 5. d5 Nb4 6. a3 Nf6 7. axb4 e6 8. Qd4 exd5 9. Nf3 Qe7 10. O-O O-O-O 11. Rxa7 Bc6 12. Bf4 Kb8 13. Qxb6+ {Feldt,K (1421)-Sampson,H (1338) ICCF 2020 1-0}) ( 1... f5 2. e3 (2. Bg2 Nf6 3. b3 (3. d3 e5 4. a3 d5 5. Nf3 e4 6. Nfd2 Be6 7. c4 c6 8. O-O Be7 9. Nc3 O-O 10. b4 a5 11. b5 a4 12. Rb1 Qa5 13. Qc2 Nbd7 14. Bb2 Ng4 {Brotherton,T (1980)-Leitenmüller,M ICCF 2012 0-1 (53)}) (3. e3 g6 4. Ne2 Bg7 5. d4 O-O 6. c4 d6 7. O-O e5 8. Bd2 c5 9. Qb3 Nc6 10. d5 Na5 11. Qc2 Bd7 12. Na3 b6 13. Nb5 Qe7 14. Bxa5 bxa5 {Hernández Delgado,J (1949)-García Burguillo,J (1923) ICCF 2018 0-1 (40)}) (3. h3 e5 4. c3 d5 5. d3 Bd6 6. e3 Nc6 7. Qa4 Bd7 8. Qc2 Qe7 9. Ne2 O-O-O 10. Kf1 e4 11. d4 g5 12. Bd2 h5 13. Be1 h4 14. Nd2 hxg3 {Ipekyilmaz,E (1532)-Deneuville,C (2157) ICCF 2015 0-1 (35)}) 3... e5 (3... e6 4. Bb2 Be7 5. e3 O-O 6. Na3 Nc6 7. Nh3 d6 8. Nf4 Qe8 9. Qe2 Bd8 10. Nc4 e5 11. Nd3 Rb8 12. Ba3 Be7 13. h4 Be6 14. h5 b5 15. Bxc6 {Reid,W (1436) -Kirk,T (1513) ICCF 2019 0-1 (26)}) 4. Bb2 e4 (4... Bc5 5. e3 e4 6. d4 Bb4+ 7. c3 Be7 8. Ne2 O-O 9. O-O Na6 10. h3 c6 11. Nd2 d5 12. Nf4 Nc7 13. c4 Ne6 14. c5 Nxf4 15. exf4 b6 16. b4 {Rinaldi,M (1676)-Bassanini,M (1897) ICCF 2016 0-1 (39) }) 5. c4 d5 6. cxd5 Qxd5 7. Nc3 Qf7 8. Nh3 Bd7 9. d3 Nc6 10. dxe4 O-O-O 11. exf5 Bxf5 12. Qc1 Nd4 13. O-O Bxh3 {Brotherton,T (2209)-Cuccumini,V (1961) ICCF 2019 1-0 (42)}) (2. d3 Nf6 3. Nh3 e5 4. Nc3 d5 5. Bg2 d4 6. Na4 c6 7. Bg5 b5 8. c3 bxa4 9. Qxa4 dxc3 10. bxc3 Qd6 11. O-O Nd5 12. c4 Nb6 13. Qa5 f4 { Andrasiunas,K-Laine,J (1883) ICCF 2007 0-1 (44)}) 2... Nf6 3. Bh3 (3. f4 e6 4. Nf3 b6 5. Bg2 Bb7 6. O-O c5 7. c4 Be7 8. Nc3 O-O 9. d3 Nc6 10. a3 d6 11. b3 Qd7 12. Bb2 d5 13. Qc2 d4 14. Nd1 Ng4 {Brown,F (1899)-Borwell,A (2251) ICCF 2013 0-1 (39)}) 3... e6 4. Nf3 c6 5. Ne5 d5 6. d4 Bd6 7. O-O O-O 8. Nc3 {Jolly,R (1573)-Rafferty,K ICCF 2020}) (1... Nf6 2. Bg2 e6 (2... c6 3. Nf3 (3. f3 d5 4. f4 b6 5. d3 Bf5 6. e3 e6 7. Qe2 Nbd7 8. e4 Bb4+ 9. Bd2 Bg4 10. Bf3 Qc7 11. Bxb4 e5 12. Bxg4 h5 13. Bxd7+ Qxd7 14. fxe5 Ng8 {Ipekyilmaz,E (1552)-Miedema,H (1221) ICCF 2016 1-0 (29)}) 3... Ng4 4. e4 d5 5. e5 c5 6. c3 Nc6 7. d4 e6 8. O-O h5 9. Qe2 cxd4 10. cxd4 Be7 11. Nc3 Nh6 12. Bxh6 Rxh6 13. h4 Bd7 14. Rfc1 { Vajas,S (1918)-Martins,K (1938) ICCF 2020 1/2 (41)}) (2... g6 3. f3 Bg7 4. f4 d5 5. e3 O-O 6. d3 c6 7. e4 Bg4 8. Bf3 Bxf3 9. Qxf3 Re8 10. e5 Nfd7 11. d4 Qb6 12. Ne2 e6 13. Qb3 Na6 14. Be3 {Ipekyilmaz,E (1552)-Wilson,N (1554) ICCF 2016 1-0 (27)}) 3. d3 Be7 4. e4 O-O 5. Ne2 d6 6. O-O c5 7. b3 Nc6 8. Bb2 Qc7 9. d4 cxd4 10. Nxd4 e5 11. Nxc6 bxc6 12. Nd2 Bb7 13. c4 {Barros,L (1719)-Meherhomji, E (1787) ICCF 2012 1-0 (27)}) (1... h5 2. Nf3 (2. Bg2 h4 3. g4 d5 4. h3 e5 5. d3 f5 6. g5 Bd6 7. Nc3 c6 8. Nf3 Ne7 9. e4 d4 10. Ne2 fxe4 11. dxe4 c5 12. c3 Be6 13. O-O Nbc6 {Boucher,B (1763)-Morin,S (2267) ICCF 2020 0-1 (28)}) (2. h4 e5 3. Bg2 Bc5 4. Nh3 d5 5. O-O Bg4 6. c4 Qc8 7. Ng5 d4 8. d3 Kf8 9. f3 Bd7 10. f4 exf4 11. Bxf4 Nh6 12. Na3 a6 13. Nc2 Nc6 {Kruk,S (1695)-Rychkov,A ICCF 2018 1-0 (37)}) 2... d6 (2... e6 3. d3 Be7 4. Bg2 d6 5. Be3 Bf6 6. c3 g5 7. Bd4 e5 8. Be3 Nc6 9. O-O h4 10. Re1 hxg3 11. fxg3 Bh3 12. Qc1 Bxg2 13. Kxg2 Qd7 14. Ng1 {Armstrong,J (1528)-Paul,M (1646) ICCF 2016 0-1 (36)}) 3. d4 (3. Bg2 c5 4. Nc3 g6 5. d4 Bg7 6. dxc5 Nf6 7. cxd6 exd6 8. O-O O-O 9. Bg5 Bg4 10. Ne4 Bf5 11. Bxf6 Bxf6 12. Nxf6+ Qxf6 13. Nd4 Nc6 14. Nxc6 bxc6 {Strelecky,R-Anderson,L (1174) ICCF 2015 1-0 (33)}) 3... g6 4. c4 Bg7 5. Bg2 Nf6 6. Nc3 b6 7. Ne5 dxe5 8. Bxa8 exd4 9. Nb5 O-O 10. Qxd4 Nfd7 11. Qd3 Na6 12. Nxa7 Qe8 13. Nxc8 { Walsh,P (1550)-Anderson,L (1021) ICCF 2017 1-0 (43)}) (1... e6 2. Bg2 (2. d3 d5 3. Bg2 c6 4. Nf3 Bd6 5. O-O Ne7 6. Re1 O-O 7. e4 f6 8. Nbd2 e5 9. d4 exd4 10. exd5 Nxd5 11. Nxd4 Be5 12. Nc4 Bxd4 13. Qxd4 Nb4 {Stevenson,W-Smail,J ICCF 2017 1-0}) 2... f5 3. d3 Nf6 4. e4 fxe4 5. dxe4 Bb4+ 6. c3 Bc5 7. e5 Ng8 8. Qg4 Qe7 9. b4 Bb6 10. Nf3 d6 11. Bg5 Qf7 12. O-O Nc6 13. Bf4 {Sosa Landa,H (1658) -Woodhouse,S (1557) ICCF 2014 0-1 (38)}) (1... c6 2. d4 (2. e4 d6 3. Bh3 Bxh3 4. Nxh3 e5 5. O-O Nf6 6. Nc3 Qb6 7. Na4 Qa5 8. Nc3 Nbd7 9. a3 Be7 10. b4 Qc7 11. d3 a5 12. Bb2 {1-0 (12) Sweetland,D (1384)-Reinsch,D ICCF 2015}) 2... g6 3. c4 Bg7 4. Bg2 e6 5. Nc3 b6 6. e4 Bb7 7. Nf3 d6 8. O-O Ne7 9. Qa4 Qd7 10. Bf4 O-O 11. Rad1 h6 12. Rfe1 Na6 13. e5 {Sudomir,J-Humbert,P (1143) ICCF 2016 1-0 (36)}) 2. c4 (2. Bg2 Nf6 (2... c6 3. b3 (3. d3 e5 (3... Bg4 4. f3 Bh5 5. e3 e5 6. d4 Nd7 7. b3 Ngf6 8. Bb2 Bd6 9. Nd2 O-O 10. Ne2 Qe7 11. e4 dxe4 12. Nxe4 Nxe4 13. fxe4 exd4 14. Bxd4 Bc5 15. c3 {Ipekyilmaz,E (1661)-Harman,K (1610) ICCF 2016 0-1 (56)}) (3... g6 4. f4 e6 5. e4 dxe4 6. dxe4 Qxd1+ 7. Kxd1 Ne7 8. Nc3 Bg7 9. Nf3 Bxc3 10. bxc3 Nd7 11. a4 a5 12. Be3 O-O 13. Ke2 Nf6 14. Ne5 Ne8 15. Bc5 {Pradeilles,G (1719)-Arvidsson,D (1377) ICCF 2018 1-0}) 4. Nf3 (4. a3 Bd6 5. Nd2 (5. e4 Nf6 6. Bg5 dxe4 7. dxe4 h6 8. Bxf6 Qxf6 9. Nc3 O-O 10. Nf3 Rd8 11. Qe2 b6 12. O-O-O a5 13. Nh4 b5 14. Nf5 Bf8 15. Rxd8 Qxd8 {Thau,O (1704) -McCartney,P (1900) ICCF 2020 0-1 (29)}) 5... Nf6 6. e3 (6. e4 Bg4 7. Ngf3 O-O 8. O-O Re8 9. h3 Be6 10. Re1 dxe4 11. Nxe4 Nxe4 12. dxe4 f6 13. Be3 Qc7 14. Qd3 c5 15. Rad1 Rd8 16. Qc3 Nd7 17. Bf1 c4 {Nagel,H (2121)-Balta,M (2181) ICCF 2015 1-0 (43)}) 6... Bg4 7. Ne2 Nbd7 8. h3 Bh5 9. g4 Bg6 10. O-O O-O 11. f4 exf4 12. exf4 h6 13. Nf3 Re8 14. Ng3 Bh7 15. Kh1 Qb6 {Boucher,B (1763)-Beck,G (1879) ICCF 2020 0-1 (41)}) 4... Qc7 (4... Bd6 5. O-O Be6 (5... Nf6 6. Re1 O-O 7. e4 Re8 8. exd5 cxd5 9. c4 dxc4 10. dxc4 Nc6 11. Nc3 Bf5 12. Bg5 h6 13. Nh4 Bh7 14. Bxf6 Qxf6 15. Ne4 Bxe4 16. Bxe4 Nd4 17. Kg2 {Baciak,M (2240) -Dojcinovic,M (1622) ICCF 2018 1-0 (59)}) (5... Ne7 6. e4 d4 7. Nbd2 f6 8. Ne1 Be6 9. f4 Nd7 10. Bh3 Bxh3 11. Qh5+ Ng6 12. Qxh3 Qe7 13. f5 Ngf8 14. Nc4 Bc7 15. a4 {Bravo González,R (1999)-Janiga,G (1945) ICCF 2014 1-0 (35)}) 6. e4 dxe4 7. Ng5 exd3 8. Nxe6 fxe6 9. Qxd3 Nf6 10. Nd2 O-O 11. Ne4 Nxe4 12. Bxe4 g6 13. Bxg6 hxg6 14. Qxg6+ Kh8 15. Bg5 Qe8 16. Bf6+ {Brotherton,T (2004)-Knox,A (1495) ICCF 2016 1-0}) (4... Nf6 5. Nxe5 Bd6 6. d4 Nbd7 7. f4 O-O 8. Nc3 Nb6 9. O-O Bf5 10. b3 Re8 11. e3 Bb4 12. Bd2 a5 13. g4 Bxc3 14. Bxc3 Be4 15. Bh3 Qc8 16. f5 {Uecker,D (2392)-Canibal,J (2293) ICCF 2011 1/2 (34)}) 5. O-O Na6 6. a3 Be7 7. c4 Bf6 8. cxd5 cxd5 9. Nc3 Ne7 10. Re1 Bg4 11. h3 Bd7 12. e4 d4 13. Nd5 Nxd5 14. exd5 O-O {Brotherton,T (2172)-Brião,P (1895) ICCF 2017 1-0 (43)}) (3. c3 e5 4. a3 (4. d4 exd4 5. Qxd4 Nd7 6. Qe3+ Be7 7. Nf3 Ngf6 8. O-O Ng4 9. Qd4 Ndf6 10. h3 Ne4 11. hxg4 O-O 12. Nh2 Ng5 13. Bxg5 Bxg5 14. f4 Bf6 15. Qd3 Qb6+ { Armstrong,J (1658)-Domnin,M ICCF 2007 1-0 (50)}) (4. Qa4 Bd7 5. d3 f5 6. Kf1 Nf6 7. Bd2 e4 8. d4 c5 9. Qb3 Nc6 10. dxc5 {1-0 (10) Ipekyilmaz,E (1532) -Reinsch,D ICCF 2015}) (4. Qb3 Nf6 5. d3 Bd6 6. Nf3 Be6 7. Bg5 Nbd7 8. Qxb7 Qc8 9. Qxc8+ Rxc8 10. O-O Rb8 11. Bxf6 Nxf6 12. b4 O-O 13. Ng5 Bg4 14. Nf3 Rfe8 15. e3 Bf5 {Molia,L-Valtersson,I ICCF 2012 1-0 (54)}) 4... Bf5 5. a4 Nf6 6. b3 Bc5 7. b4 Bb6 8. a5 Bc7 9. Qa4 O-O 10. Na3 Re8 11. Nf3 h6 12. Bb2 b5 13. axb6 Bxb6 14. c4 Bd7 {Ipekyilmaz,E (1552)-Czestochowski,E ICCF 2016 1-0 (57)}) (3. e3 e5 4. d3 d4 5. a3 c5 6. exd4 Qxd4 7. c3 Qd6 8. Qe2 Nc6 9. Bxc6+ bxc6 10. Bf4 Ba6 11. c4 g6 12. Bxe5 Qe6 13. Bxh8 Nh6 14. Qxe6+ fxe6 {Armstrong,J (1511)-Miedema, H (1073) ICCF 2017 1-0 (34)}) 3... e5 4. Bb2 Nd7 (4... Bd6 5. Nf3 (5. d3 Nf6 6. Nf3 Qc7 7. O-O Be6 8. c4 O-O 9. c5 Bxc5 10. Bxe5 Qd8 11. d4 Be7 12. Nc3 Nbd7 13. Bf4 Ne4 14. Qc2 Nxc3 15. Qxc3 Bf5 16. Rfd1 Re8 {Coope,D (2041)-Dewald,H (1894) ICCF 2012 1/2 (47)}) 5... Qe7 6. O-O Nf6 7. c4 (7. d3 O-O 8. Nbd2 Rd8 9. c4 a5 10. a3 e4 11. Ne1 Be5 12. Bxe5 Qxe5 13. Nc2 exd3 14. exd3 Qc3 15. cxd5 cxd5 16. Nf3 Nc6 17. Ne3 Be6 18. Qc2 d4 {Coope,D (2111)-Salzmann,S (2254) ICCF 2011 1/2 (42)}) 7... O-O 8. cxd5 cxd5 9. d3 Nc6 10. Nc3 d4 11. Ne4 Nxe4 12. dxe4 Be6 13. Qd2 Rac8 14. Rac1 Bb4 15. Qd3 Bc5 16. Nh4 {Coope,D (2041) -Lupienski,E (1998) ICCF 2012 0-1 (46)}) 5. Nf3 Bd6 6. d3 Ngf6 7. Nbd2 O-O 8. O-O a5 9. c4 Re8 10. cxd5 cxd5 11. Rc1 a4 12. bxa4 Nb6 13. Nb1 Nxa4 14. Ba3 { Niewold,J (1712)-Zehr,L (1966) ICCF 2012 0-1 (29)}) (2... c5 3. d3 (3. d4 cxd4 4. Qxd4 Nf6 5. Nc3 Nc6 6. Qd1 Bf5 7. Nf3 e5 8. a3 Be7 9. e3 Qa5 10. O-O Rd8 11. Qe2 O-O 12. b4 Bxb4 13. axb4 Qxa1 14. Bd2 Qa3 {Azzi,R (1614)-Silva Filho,A (2238) ICCF 2015 0-1 (28)}) 3... Nc6 4. e3 (4. Nf3 Nf6 5. c3 (5. Bf4 Qb6 6. b3 h6 7. O-O g5 8. Bd2 Bg7 9. Nc3 Qc7 10. Rb1 O-O 11. Ne1 d4 12. Na4 b6 13. a3 Rb8 14. f4 gxf4 15. Bxf4 e5 16. Bd2 Ng4 {Panman,H (2319)-Rogachev,V ICCF 2013 1/2 (53)}) 5... e5 6. a4 (6. Bg5 Be7 7. O-O O-O 8. Bxf6 Bxf6 9. e4 d4 10. a4 Be6 11. Na3 dxc3 12. bxc3 Qa5 13. Qc2 Qc7 14. Rfd1 Rfd8 15. h4 Rd7 16. Kh2 Rad8 17. Nb5 Qb8 {Rheindt,S (1762)-Meller,E (1864) ICCF 2016 0-1 (43)}) 6... Be7 7. O-O O-O 8. Nbd2 e4 9. Ne1 exd3 10. Nxd3 c4 11. Nf4 g5 12. Nxd5 Nxd5 13. Nxc4 Be6 14. e4 Nxc3 15. bxc3 Bxc4 {Brown,F (1899)-Barbalic,Z (2093) ICCF 2013 0-1}) (4. c4 d4 5. Bxc6+ bxc6 6. Qa4 Qc7 7. f4 f6 8. Nf3 a5 9. O-O Nh6 10. Nbd2 e6 11. Nb3 Nf5 12. Nfd2 Bd7 13. Ne4 Qa7 14. Qa3 Nh6 15. Nbd2 Be7 {Phillips,O-Brooks,I (2522) ICCF 2015 0-1 (44)}) 4... e5 5. d4 cxd4 6. exd4 Nxd4 7. c3 Nc6 8. Qxd5 Qc7 9. Be3 Nf6 10. Qb5 Bd7 11. Qe2 O-O-O 12. Nd2 h5 13. Nc4 Be6 14. Nf3 { Ipekyilmaz,E (1665)-Brisson,P (2058) ICCF 2016 0-1 (68)}) (2... Nc6 3. d4 (3. d3 Bg4 4. Nf3 Nf6 5. a3 e5 6. b4 e4 7. Nfd2 Nd4 8. Nc3 exd3 9. cxd3 c5 10. bxc5 Bxc5 11. Nb3 Ne6 12. h3 Bf5 13. g4 Bg6 14. Nxc5 Nxc5 {Alejos,P (1976) -Climastone,G ICCF 2013 1-0}) 3... e6 (3... h5 4. Nf3 h4 5. O-O Bf5 6. Nxh4 Rxh4 7. gxh4 Qd7 8. Bf4 O-O-O 9. c3 Bh3 10. Bg3 f6 11. Kh1 e5 12. dxe5 fxe5 13. e4 Nf6 14. exd5 Bxg2+ 15. Kxg2 {Kästner,M-Drost,P (2149) ICCF 2020 1-0}) 4. Nf3 Bb4+ 5. Bd2 Nf6 6. Bxb4 Nxb4 7. O-O O-O 8. e3 b6 9. c4 Ba6 10. Qa4 Qd6 11. Ne5 Bxc4 12. Nxc4 dxc4 13. Bxa8 Rxa8 14. Nd2 {Brião,P (2006)-Balicki,C ICCF 2007 1-0 (40)}) (2... e6 3. c3 (3. e3 Nc6 (3... Bd6 4. Kf1 Nf6 5. Ne2 c5 6. d4 O-O 7. h3 Nc6 8. Nbc3 a6 9. Bf3 b5 10. a3 b4 11. axb4 cxb4 12. Na4 e5 13. Kg1 e4 14. Bg2 a5 15. Nf4 {Shevchenko,A (2195)-Rychkov,A ICCF 2018 1-0 (41)}) 4. Nf3 Nf6 5. d4 Bb4+ 6. c3 Ba5 7. O-O Ne4 8. Ne5 Nxe5 9. dxe5 O-O 10. Nd2 Nxd2 11. Qxd2 c5 12. Re1 d4 13. Qd3 dxc3 14. Qxd8 Rxd8 {Boni,M-Glover,M ICCF 2007 0-1 (29)}) 3... Be7 4. d3 Qd7 5. Nf3 h6 6. Ne5 Qd6 7. d4 Nd7 8. Nxd7 Bxd7 9. a3 Nf6 10. O-O O-O 11. Bf4 Qc6 12. Nd2 Qa4 13. Qxa4 Bxa4 14. Bxc7 {Armstrong,J (1481) -Hardwick,M (1161) ICCF 2019 1-0 (74)}) (2... g6 3. Nc3 (3. d3 Nf6 4. Nd2 Bg7 5. e3 O-O 6. Ne2 Nc6 7. a3 e5 8. b3 b5 9. Bb2 Be6 10. h3 a5 11. O-O Qd7 12. Nf3 Bxh3 13. Bxe5 Nxe5 14. Nxe5 Qe6 {Lachiche,D-Anderson,L (1416) ICCF 2012 1-0 (37)}) 3... d4 4. Ne4 Nc6 5. d3 Bg7 6. e3 Nf6 7. Nxf6+ Bxf6 8. Bxc6+ bxc6 9. e4 Rb8 10. Ne2 Bg4 11. Qd2 Qd6 12. Qa5 Bf3 13. Qxa7 O-O 14. Bf4 {Barros,L-Andrade, J ICCF 2011 0-1 (34)}) (2... b6 3. e4 Bb7 4. exd5 Bxd5 5. Nf3 Nf6 6. d4 Nbd7 7. Nc3 Bb7 8. Bf4 Nh5 9. Qd2 Nxf4 10. Qxf4 e6 11. Ng5 Qf6 12. Bxb7 Rd8 13. Qxf6 Nxf6 14. Bc6+ {Nurtawa,S-Jordaan,W (2118) ICCF 2019 1-0}) 3. d3 (3. c3 e5 (3... c6 4. Nf3 h6 5. Qb3 e6 6. O-O Bd6 7. d4 O-O 8. Nbd2 c5 9. Re1 cxd4 10. cxd4 Qb6 11. Qxb6 axb6 12. e4 dxe4 13. Nxe4 Nxe4 14. Rxe4 Bd7 15. Ne5 {Hebels,A (2409) -Jiménez Ariza,J (2378) ICCF 2014 0-1 (45)}) (3... e6 4. d3 (4. Nf3 Be7 5. Qa4+ Bd7 6. Qb3 Bc6 7. Ne5 Nbd7 8. Nxd7 Qxd7 9. Qc2 O-O 10. d4 b6 11. Bg5 Ng4 12. Bxe7 Qxe7 13. O-O f5 14. Bf3 Qg5 15. Bxg4 fxg4 {Armstrong,J (1545)-Knox,A (1349) ICCF 2017 1-0}) 4... Nbd7 (4... Be7 5. Nd2 Nc6 6. Ngf3 e5 7. Qc2 O-O 8. O-O Re8 9. b4 a6 10. Bb2 e4 11. dxe4 dxe4 12. Nxe4 Nxe4 13. Qxe4 Bxb4 14. Qc2 Bc5 15. Rad1 Qe7 16. e3 {Wilshusen,H (1625)-Pivirotto,F (1830) ICCF 2014 0-1}) 5. Bg5 h6 6. Bxf6 Nxf6 7. Nf3 c5 8. O-O Bd6 9. Kh1 Bd7 10. Ng1 Qc7 11. Nd2 O-O 12. Ndf3 Qb6 13. b3 Bc7 14. c4 Rfe8 15. cxd5 {Armstrong,J (1545)-Gilbert,R (1789) ICCF 2017 0-1 (37)}) 4. Qa4+ (4. a3 Bd6 (4... Nc6 5. a4 e4 (5... h5 6. b3 h4 7. Na3 Be6 8. Nc2 h3 9. Bf1 d4 10. c4 Bc5 11. f3 e4 12. d3 e3 13. Ba3 Bxa3 14. Rxa3 a5 15. Qc1 Nd7 16. Qb2 Nc5 17. Kd1 {Ipekyilmaz,E (1552)-Radostev, D ICCF 2016 0-1 (61)}) 6. b3 d4 (6... a5 7. Na3 Na7 8. Nc2 b5 9. Ba3 c5 10. Rc1 b4 11. cxb4 cxb4 12. Bb2 g6 13. d3 exd3 14. Ne3 dxe2 15. Qd4 Bg7 16. Nxd5 Nh5 17. Nc7+ {1-0 (17) Ipekyilmaz,E (1552)-Jokipii,G (1435) ICCF 2016}) (6... Bd6 7. Na3 O-O 8. h3 Be6 9. Bb2 Na5 10. h4 d4 11. Nc4 Bxc4 12. bxc4 e3 13. cxd4 exf2+ 14. Kxf2 Ng4+ 15. Kf1 Bxg3 16. Qc2 Nh2+ 17. Rxh2 Bxh2 18. Nf3 { Ipekyilmaz,E (1665)-Hunt,J (1484) ICCF 2016 1-0 (25)}) 7. Na3 Be6 8. Bb2 Na5 9. b4 Nb3 10. Rb1 a5 11. Nb5 axb4 12. Nxd4 bxc3 13. dxc3 Nxd4 14. cxd4 Bb4+ 15. Kf1 Qd5 {Ipekyilmaz,E (1552)-Pérez Pato,A (1493) ICCF 2016 1-0}) 5. a4 c6 (5... O-O 6. b3 Qe7 7. Na3 a6 8. h3 Rd8 9. h4 c5 10. Nc2 Nc6 11. Nh3 h6 12. Ne3 Be6 13. Bb2 Qd7 14. d3 Bc7 15. Rc1 b5 16. Kf1 {Ipekyilmaz,E (1665)-Løvås,R (1615) ICCF 2016 0-1 (117)}) 6. b3 Bf5 7. Na3 Nbd7 8. h3 h6 9. h4 Nc5 10. Nh3 Nce4 11. Nc2 Bc5 12. e3 a5 13. Ng1 d4 14. cxd4 exd4 15. Bb2 dxe3 {Ipekyilmaz,E (1665) -Kocian,L (1828) ICCF 2016 1-0 (27)}) (4. d4 e4 (4... Nc6 5. Bg5 Be6 6. e3 Qd7 7. Bxf6 gxf6 8. Nf3 O-O-O 9. Qa4 Kb8 10. Qb3 a6 11. Bf1 Na5 12. Qd1 Nc4 13. Nbd2 Nxb2 14. Qb3 Nc4 15. Nxc4 dxc4 {Ramos Mora,J (2031)-De la Peña Balbuena,I (2067) ICCF 2009 0-1}) (4... Nbd7 5. Bg5 c6 6. Nf3 h6 7. Bxf6 Qxf6 8. dxe5 Nxe5 9. Nxe5 Qxe5 10. Qd4 Bd6 11. Qxe5+ Bxe5 12. Nd2 O-O 13. O-O-O Re8 14. e4 dxe4 15. Bxe4 Bc7 16. Rhe1 {Ramos Mora,J (2031)-Calonge González,A (2000) ICCF 2009 0-1 (45)}) 5. f3 (5. Bf4 c5 6. Bg5 Nc6 7. e3 cxd4 8. exd4 Be7 9. Nd2 O-O 10. Ne2 h6 11. Bxf6 Bxf6 12. Nf1 b5 13. Nf4 Bg5 14. Ne3 Bxf4 15. gxf4 Rb8 16. O-O { Ramos Mora,J (2031)-Francisco Sandoval,M ICCF 2009 0-1 (43)}) 5... Be7 6. fxe4 Nxe4 7. Nd2 f5 8. Nxe4 fxe4 {0-1 (8) Serbanoiu,M-Blake,M (2088) ICCF 2009}) (4. Nf3 Nbd7 5. O-O Bd6 6. d3 c6 7. c4 d4 8. e3 c5 9. exd4 cxd4 10. Bg5 O-O 11. Nbd2 Be7 12. Re1 h6 13. Bxf6 Bxf6 14. b4 a5 15. a3 Qc7 {Kaufmann,M (1735) -Feytens,R (2294) ICCF 2006 1-0 (29)}) 4... c6 (4... Qd7 5. Qb3 Be7 6. d3 O-O 7. Bg5 c6 8. Bxf6 Bxf6 9. Nf3 Rd8 10. O-O e4 11. Nfd2 exd3 12. exd3 Re8 13. Nf3 Qe7 14. Nbd2 Qc7 15. Rae1 Rxe1 16. Rxe1 {Armstrong,J (1599)-Hardwick,M (1495) ICCF 2015 1-0 (66)}) 5. d3 Bd6 (5... Be7 6. Kf1 O-O 7. h3 Nbd7 8. d4 e4 9. e3 b5 10. Qb3 a5 11. a3 Bd6 12. Ne2 Nb6 13. Bd2 g6 14. Be1 Nh5 15. Nd2 Kh8 16. Kg1 Ng7 17. Nf1 {Ipekyilmaz,E (1532)-Kozlov,V (2404) ICCF 2015 0-1 (50)}) 6. Kf1 ( 6. e3 O-O 7. Ne2 Bf5 8. d4 a5 9. a3 Nbd7 10. Qb3 a4 11. Qa2 Qa5 12. Nd2 Bd3 13. Bf1 Qa6 14. b3 c5 15. Bb2 Rfc8 16. Rc1 exd4 17. cxd4 axb3 {Ipekyilmaz,E (1532) -Tropf,P (2180) ICCF 2015 0-1 (48)}) 6... O-O 7. Bd2 Re8 (7... Ng4 8. h3 Qb6 9. hxg4 Qxb2 10. Qb3 Qxa1 11. Nf3 a5 12. Bc1 a4 13. Qc2 Bxg4 14. Nfd2 b5 { Ipekyilmaz,E (1532)-Tateo,I ICCF 2015 0-1 (51)}) 8. Be1 e4 9. Nd2 exd3 10. exd3 Bf5 11. Qc2 Nbd7 12. Ne2 Rxe2 13. Kxe2 Nc5 14. Ne4 dxe4 {Ipekyilmaz,E (1532) -Krejcír,S (2154) ICCF 2015 0-1 (36)}) (3. e3 e5 (3... Bf5 4. d3 e6 5. b3 c5 6. Ne2 Nc6 7. O-O Be7 8. Nbc3 Qd7 9. Kh1 O-O 10. e4 dxe4 11. dxe4 Qxd1 12. Rxd1 Bg6 13. Bg5 h6 14. Bxf6 Bxf6 15. Rac1 {Armstrong,J (1643)-Neil,C (1746) ICCF 2011 1-0 (40)}) (3... e6 4. Nf3 (4. Qe2 Bd6 5. a3 O-O 6. b3 c5 7. Bb2 Nc6 8. Qf1 e5 9. Ne2 Bf5 10. Kd1 Re8 11. h3 d4 12. g4 Be6 13. Ng3 Qa5 14. d3 Rac8 15. Nd2 Nd5 {Ipekyilmaz,E (1532)-Schaffarth,P ICCF 2015 0-1 (71)}) 4... Bd6 5. O-O O-O 6. b3 Nc6 7. Bb2 Re8 8. d3 e5 9. Nc3 e4 10. dxe4 Nxe4 11. Nxe4 dxe4 12. Nd2 f5 13. Nc4 b5 14. Nxd6 Qxd6 15. Qxd6 {Armstrong,J (1643)-Toye,D (1713) ICCF 2011 1-0 (38)}) 4. b3 (4. Bf3 e4 5. Be2 h5 6. d3 Bd6 7. dxe4 dxe4 8. h4 Qe7 9. Bd2 Nc6 10. Bb5 Bg4 11. Qc1 O-O-O 12. Bxc6 bxc6 13. Nc3 Be5 14. Nb1 Rd7 15. c4 Rhd8 {Brião,P (1863)-Smith,R (1921) ICCF 2019 0-1}) (4. Ne2 c6 (4... Be7 5. O-O Nc6 (5... c6 6. b3 Be6 7. Bb2 Nbd7 8. f4 exf4 9. Nxf4 O-O 10. c4 Qb6 11. cxd5 cxd5 12. Nc3 Nc5 13. Kh1 Rad8 14. Rc1 Nce4 15. Nxe4 dxe4 16. Bxf6 Bxf6 17. Bxe4 {Kotyurgin,I (2226)-Plyusnin,V (2064) ICCF 2018 0-1 (44)}) 6. d4 O-O 7. Nbc3 exd4 8. exd4 Nb4 9. a3 Na6 10. b3 Re8 11. Qd3 c6 12. Kh1 h6 13. Nd1 Nc7 14. Ne3 a5 15. a4 b6 16. c4 {Eliseev,N (2171)-Trofimov,V (2419) ICCF 2019 1/2 (51)}) ( 4... Nc6 5. d4 (5. O-O Be6 (5... Bf5 6. Nbc3 Qd7 7. d3 Bh3 8. Nb5 O-O-O 9. c4 Bxg2 10. Kxg2 dxc4 11. d4 Qd5+ 12. e4 Qxb5 13. d5 Nxe4 14. a4 Qxd5 15. Qxd5 Rxd5 16. f3 Nd2 17. Bxd2 {Barros,L (1719)-Randolph,D (1927) ICCF 2012 0-1 (27)} ) (5... h5 6. d4 h4 7. dxe5 Nxe5 8. f4 Nc4 9. Bxd5 Ke7 10. Bxc4 Qxd1 11. Rxd1 Bf5 12. Nd4 Bg4 13. Be2 Bxe2 14. Nxe2 hxg3 15. Kg2 {1-0 (15) Plyusnin,V (2064) -Larionov,S ICCF 2018}) 6. d3 h5 7. Nd2 h4 8. c4 hxg3 9. Nxg3 Qd7 10. b3 Bh3 11. Nf3 Bxg2 12. Re1 Qh3 13. e4 Nd4 14. exd5 Nxf3+ 15. Qxf3 Qxh2# {0-1 (15) Barros,L (1703)-Relyea,A (1706) ICCF 2013}) 5... Bg4 6. h3 Be6 7. O-O (7. Bd2 Qd6 8. O-O Qd7 9. dxe5 Nxe5 10. Bc3 Bd6 11. Nf4 O-O-O 12. Nd2 Kb8 13. Nb3 Ne4 14. Nxe6 Qxe6 15. Bd4 h5 16. h4 c5 17. Bc3 f5 18. Qe1 Ng4 {Moeckel,J (1703) -Pérez López,A ICCF 2013 0-1}) 7... Qd7 8. dxe5 Nxe5 9. f4 Nc6 10. Kh2 O-O-O 11. a3 h5 12. Nbc3 g6 13. Rb1 Bg7 14. Qd2 Rhe8 15. Qd1 Kb8 16. b4 {Hernández Delgado,J (1925)-Cole,S (1883) ICCF 2019 0-1 (52)}) (4... Bh3 5. O-O Bxg2 6. Kxg2 Bd6 7. f4 Nbd7 8. fxe5 Bxe5 9. d4 O-O 10. dxe5 Nxe5 11. h3 Re8 12. Kh2 Nc4 13. Qd3 Qe7 14. Nbc3 Nxe3 15. Bxe3 Qxe3 16. Rae1 {Shevchenko,A (2205)-Neborak, Y (2322) ICCF 2018 1-0 (45)}) 5. O-O Bd6 6. d4 e4 (6... O-O 7. c3 Bf5 8. Nd2 Nbd7 9. f4 exd4 10. Nxd4 Be4 11. Nxe4 Nxe4 12. Nf5 Bc5 13. b4 Bb6 14. Qg4 g6 15. c4 h5 16. Qe2 gxf5 17. Qxh5 Qf6 18. Rb1 {Barros,L (1719)-Ikegami,O (1999) ICCF 2012 0-1 (29)}) 7. c4 h5 8. cxd5 cxd5 9. Qb3 Kf8 10. h4 Nc6 11. Kh1 g5 12. hxg5 Na5 13. Qd1 Ng4 14. f3 exf3 15. Rxf3 {Shevchenko,A (2189)-Eliseev,N (2171) ICCF 2019 0-1}) (4. Nc3 c6 5. h4 h6 6. d3 Bb4 7. Bd2 O-O 8. a3 Bd6 9. Qe2 Qb6 10. b3 Bg4 11. f3 Be6 12. g4 e4 13. dxe4 dxe4 14. Nxe4 Nxe4 15. fxe4 Bg3+ { Mayes,F (1654)-Potter,C (1592) ICCF 2012 1-0 (35)}) 4... Bd6 5. Ne2 O-O 6. Bb2 c5 7. O-O Be6 8. Nbc3 Nc6 9. f4 d4 10. Ne4 Nxe4 11. Bxe4 Bg4 12. h3 Bxh3 13. Nxd4 Nxd4 14. exd4 Bxf1 {Armstrong,A (1891)-Beckett,P (1939) ICCF 2017 1/2 (31) }) (3. b3 Nbd7 (3... Bf5 4. Bb2 Nbd7 5. d3 e6 6. Nd2 Be7 7. e3 O-O 8. Ne2 h6 9. O-O c6 10. a3 a5 11. a4 Qc7 12. h3 c5 13. Nf3 Rfd8 14. g4 Bh7 15. Ng3 {Rinaldi, M (1680)-Mitica,G (2026) ICCF 2014 0-1 (64)}) 4. Bb2 e6 5. e3 Bd6 6. Nf3 O-O 7. O-O e5 8. d3 c6 9. Bh3 Re8 10. c4 Nf8 11. Bxc8 Qxc8 12. Ba3 Qc7 13. Bxd6 Qxd6 14. h3 Ne6 {Armstrong,J (1658)-Rough,R ICCF 2007 0-1 (41)}) (3. h4 e5 4. d3 d4 5. c3 Bg4 6. Bxb7 Nbd7 7. Bxa8 Qxa8 8. f3 Nh5 9. e4 Be6 10. Qd2 Nxg3 11. Rh2 f5 12. Kf2 f4 13. cxd4 Bd6 14. Nc3 Ke7 {Budge,E-McCarthy,B ICCF 2006 0-1}) 3... e5 (3... e6 4. e3 (4. Nd2 c5 (4... g6 5. e4 dxe4 6. dxe4 Bg7 7. f4 O-O 8. Ngf3 Nc6 9. O-O Nd7 10. c3 Ne7 11. Qe2 a6 12. Nb3 Nb6 13. Be3 h6 14. Rad1 Bd7 15. Nc5 Qc8 16. Nxd7 {Fawcett,D-Acosta,E (1585) ICCF 2016 1-0 (27)}) 5. b3 Nc6 6. Bb2 { 1-0 (6) Hering,H-Gellert,K (1855) ICCF 2011}) (4. Bg5 Be7 5. Bxf6 Bxf6 6. c3 O-O 7. Nf3 c5 8. O-O Nc6 9. Nbd2 Qd6 10. Kh1 Rb8 11. Ng1 b5 12. Qc2 a5 13. Rfe1 b4 14. Rac1 bxc3 15. bxc3 Ba6 {Armstrong,J (1564)-Price,D (1953) ICCF 2010 0-1 (25)}) 4... Nc6 (4... c5 5. Nf3 (5. Ne2 Nc6 6. b3 Bd6 7. Bb2 O-O 8. O-O Re8 9. c4 Bd7 10. Nbc3 dxc4 11. dxc4 Be7 12. Nf4 a6 13. Qe2 Qc7 14. Rfd1 Rad8 15. Ne4 Nxe4 16. Bxe4 Bc8 {Boucher,B (1763)-Poupinel,M (1778) ICCF 2020 1-0 (60)}) 5... Nc6 6. c3 Bd6 7. O-O O-O 8. a3 b6 9. Nbd2 Bb7 10. Nh4 Qc7 11. Ndf3 Rad8 12. Bh3 Ne5 13. d4 Nxf3+ 14. Nxf3 Ne4 15. dxc5 bxc5 16. Nh4 {Armstrong,J (1536) -MacMillen,A (1704) ICCF 2017 0-1 (35)}) (4... c6 5. Nf3 Nbd7 6. O-O Bd6 7. b3 O-O 8. Ba3 c5 9. Nbd2 b5 10. Qe2 b4 11. Bb2 a5 12. c4 Bb7 13. Rac1 e5 14. e4 dxe4 15. dxe4 Re8 16. Ng5 {Armstrong,J (1536)-Neil,C (1415) ICCF 2017 1-0 (35)} ) 5. d4 b6 6. b3 Ba6 7. Bb2 Qd7 8. Nd2 O-O-O 9. Ne2 h5 10. h3 h4 11. g4 Kb8 12. a3 Be7 13. Rc1 Na5 14. Nf4 Bd6 15. Nd3 {Ipekyilmaz,E (1700)-Balta,M (2102) ICCF 2017 0-1 (56)}) (3... c6 4. Nd2 (4. Bg5 Qb6 5. Bxf6 exf6 6. Qc1 Bc5 7. e3 d4 8. e4 Bb4+ 9. c3 Bc5 10. Qc2 Nd7 11. Nf3 Ne5 12. Nxe5 fxe5 13. c4 a5 14. a3 Be7 15. Nd2 a4 {Ipekyilmaz,E (1700)-Plyusnin,A (1951) ICCF 2017 0-1 (66)}) (4. e3 e5 5. d4 (5. Ne2 Bd6 6. b3 O-O 7. Bb2 Be6 8. Nd2 Nbd7 9. O-O Re8 10. c4 a5 11. Rc1 a4 12. cxd5 cxd5 13. bxa4 Nb6 14. Nb3 Nxa4 15. Ba1 Bf5 16. d4 e4 { Bush,F-Salão,A (1969) ICCF 2006 1/2 (56)}) 5... e4 6. b3 h5 (6... Bg4 7. f3 Bf5 8. Bb2 Na6 9. c3 Bd6 10. Nd2 Qe7 11. fxe4 Nxe4 12. Nxe4 Bxe4 13. Bxe4 dxe4 14. Nh3 h5 15. Qc2 {1-0 (15) Ipekyilmaz,E (1665)-Sadler,K (1810) ICCF 2016}) 7. h3 Bd6 8. Bb2 h4 9. g4 O-O (9... b5 10. Nd2 O-O 11. a3 Nh7 12. Qe2 f5 13. gxf5 Bxf5 14. f3 Qe7 15. fxe4 dxe4 16. a4 bxa4 17. Rxa4 Nd7 18. Kd1 Nhf6 19. c3 c5 20. Ra5 Bc7 21. Rb5 {Ipekyilmaz,E (1552)-Epinoux,J (2109) ICCF 2016 0-1 (49)}) 10. Nd2 Qe7 11. a3 Nh7 12. Qe2 f5 13. gxf5 Bxf5 14. Qh5 Bd7 15. Qe2 Be8 { Ipekyilmaz,E (1552)-Palmateer,C (2280) ICCF 2016 0-1 (50)}) (4. e4 dxe4 5. dxe4 Qxd1+ 6. Kxd1 e6 7. Ke2 Be7 8. f3 O-O 9. Be3 Rd8 10. Nh3 b6 11. Nd2 Bb7 12. Rhd1 c5 13. Nc4 Nc6 14. Kf2 Nb4 15. Rdc1 Ne8 {Thau,O (1704)-Vermeulen,E (1615) ICCF 2020 1/2}) 4... e5 5. Ngf3 (5. c3 Bc5 6. e3 Bf5 7. Nb3 Bb6 8. Ne2 O-O 9. O-O Qd7 10. d4 Re8 11. dxe5 Rxe5 12. Nbd4 Bh3 13. Nf4 Bxg2 14. Kxg2 Na6 15. Nf3 Ree8 16. Qc2 Nc5 {Regan,D-Dolan,B ICCF 2019 0-1 (25)}) 5... e4 6. Nd4 c5 7. N4b3 a5 8. a4 exd3 9. cxd3 Nc6 10. O-O Be7 11. Nf3 O-O 12. Be3 b6 13. d4 c4 14. Nc1 Bf5 15. Na2 {Nagel,H (2103)-Ossig,R (2240) ICCF 2016 1-0}) (3... Bg4 4. h3 Bh5 5. Nc3 e5 6. g4 Bg6 7. g5 Nfd7 8. Bxd5 Nc6 9. Nf3 Bb4 10. a3 Bxc3+ 11. bxc3 O-O 12. h4 Bh5 13. Rb1 Nc5 14. Bxc6 bxc6 15. Nxe5 {Domenche Redondo,F (1598) -Bermejo Jiménez,A ICCF 2016 0-1 (34)}) 4. a3 (4. Nd2 Bc5 (4... Nc6 5. a3 (5. e3 Be7 (5... Bf5 6. Ne2 Qd7 7. a3 Bh3 8. Bxh3 Qxh3 9. b3 Qg2 10. Rf1 Qxh2 11. d4 Qh5 12. Bb2 O-O-O 13. dxe5 Nxe5 14. Nd4 Neg4 15. Qf3 {1-0 (15) Lachiche, D-Walsh,I ICCF 2012}) 6. Ne2 O-O 7. a3 a5 (7... a6 8. b3 Bg4 9. Bb2 Qd7 10. h3 Be6 11. f4 exf4 12. Nxf4 d4 13. exd4 Nxd4 14. Bxb7 Rab8 15. Bxd4 Qxd4 16. Nxe6 fxe6 17. Bf3 Nd5 18. Rf1 Nc3 19. Qc1 {Lachiche,D (1691)-Che,T ICCF 2013 0-1}) ( 7... Bd6 8. b3 Be6 9. Bb2 Qd7 10. h3 Rad8 11. g4 Be7 12. f4 d4 13. e4 exf4 14. Nxf4 Qd6 15. O-O Nd7 16. Nxe6 {Lachiche,D-Zazzeri,M ICCF 2012 1/2 (71)}) 8. b3 Be6 9. Bb2 Qc8 10. h3 Rd8 11. g4 Ne8 12. Nc3 Qd7 13. O-O h5 14. gxh5 d4 15. Nb5 a4 16. exd4 Bxh3 {Lachiche,D (1691)-Arnold,E ICCF 2013 0-1 (37)}) (5. c4 Be6 6. cxd5 Bxd5 7. Ngf3 Bc5 8. O-O O-O 9. a3 a5 10. Qc2 Qe7 11. b3 Bd4 12. Rb1 Rfd8 13. e3 Bc5 14. Ra1 e4 15. dxe4 Nxe4 16. Bb2 Nxd2 {Kolodziejski,M (2203)-Wójcik, W (2156) ICCF 2010 1/2 (46)}) 5... Bc5 6. e3 a5 7. Ne2 (7. b3 O-O 8. Ne2 Be6 ( 8... d4 9. e4 Ne8 10. O-O Nd6 11. f4 f6 12. f5 g5 13. Bf3 b6 14. Bh5 Qe7 15. Kg2 Kg7 16. g4 Nb5 17. h4 gxh4 18. a4 Nd6 19. Rh1 Nf7 20. Nf3 {De Toledo,C (2331)-Iordanyan,E (2302) ICCF 2014 1-0 (26)}) 9. h3 Re8 10. Bb2 Qd7 11. g4 d4 12. e4 Rad8 13. f4 exf4 14. Nf3 Bd6 15. Nfxd4 {De Toledo,C (2331)-Cimicki,D (2401) ICCF 2014 0-1 (27)}) 7... O-O 8. O-O Be6 (8... Bg4 9. h3 Bf5 10. b3 h6 11. Bb2 Re8 12. g4 Bh7 13. Ng3 Qd7 14. Re1 Rad8 15. Nf3 Bd6 16. Qd2 Bf8 17. Rad1 Qe7 18. Qc1 {Nagel,H (2104)-Juárez de Vena,A (1947) ICCF 2015 1-0 (26)}) 9. d4 exd4 10. Nb3 Bb6 11. Nbxd4 Nxd4 12. Nxd4 Bg4 13. Qd3 Re8 14. b3 {1/2 (14) Nagel,H (2211)-Steinkellner,P ICCF 2011}) (4... Bd6 5. e3 (5. e4 dxe4 6. dxe4 Be6 7. Ngf3 h6 8. O-O O-O 9. Qe2 Qd7 10. b3 Rd8 11. Bb2 Qc6 12. Ne1 Qa6 13. c4 Nc6 14. Ndf3 Nd7 15. Nc2 Bc5 16. h3 Qb6 {Varela Mourín,J (2219)-Bonay Toscas,S (2141) ICCF 2017 1/2 (58)}) (5. c3 O-O 6. Qc2 Nc6 7. Ngf3 h6 8. O-O Be6 9. e4 Qd7 10. Re1 Rad8 11. exd5 Bxd5 12. b4 a6 13. a4 b5 14. axb5 axb5 15. Ne4 Be7 { Nagel,H (2211)-Somogyi,J (2114) ICCF 2011 1/2 (28)}) (5. c4 d4 6. b4 c6 7. c5 Bc7 8. Bb2 a5 9. a3 axb4 10. axb4 Rxa1 11. Qxa1 Nd5 12. Ngf3 Nxb4 13. O-O O-O 14. Qa4 N8a6 15. Rc1 Qe7 16. Ba3 Na2 {Hirsso,J (2260)-Vainio,M (1899) ICCF 2008 0-1 (30)}) 5... O-O 6. Ne2 Be6 7. a3 c5 8. b3 Nc6 9. Bb2 Qd7 10. h3 a5 11. g4 h5 12. g5 Nh7 13. h4 g6 14. Nc3 Bc7 15. O-O Bh3 16. Bxh3 {Lachiche,D (1691) -Lansford,M (1566) ICCF 2013 1-0 (27)}) (4... Bb4 5. e3 O-O 6. Ne2 Re8 7. a3 Ba5 8. b3 Bg4 9. Bb2 Nc6 10. h3 Bxe2 11. Qxe2 d4 12. b4 Bb6 13. O-O a6 14. Nc4 dxe3 15. fxe3 Qd7 16. Rf2 {Lachiche,D-Parente,M (1816) ICCF 2012 1-0 (26)}) ( 4... h6 5. e3 Be7 6. Ne2 Nc6 7. a3 a5 8. b3 Bf5 9. Bb2 O-O 10. O-O Re8 11. e4 dxe4 12. Nxe4 Nxe4 13. Bxe4 Qd7 14. Bf3 Bc5 15. Nc3 Nd4 16. Na4 {Lachiche, D-Bassanini,M (1858) ICCF 2012 0-1 (47)}) 5. c3 (5. e3 Bg4 (5... O-O 6. Ne2 c6 (6... Nc6 7. O-O Bf5 8. Nf3 Re8 9. b3 e4 10. Nfd4 Nxd4 11. Nxd4 Bxd4 12. exd4 exd3 13. cxd3 c6 14. Qf3 Bg4 15. Qf4 Be2 16. Re1 Bxd3 17. Ba3 Qa5 18. Bb2 { Regan,D-Walton,J (2072) ICCF 2019 0-1}) 7. h3 {1-0 (7) Thau,O (1704)-Wagner,J ICCF 2020}) 6. Ne2 Nc6 7. a3 O-O 8. b3 Qd7 9. Bb2 d4 10. e4 a5 11. h3 Be6 12. f4 Qd6 13. O-O Rfe8 14. g4 h6 15. Qe1 exf4 16. Nxf4 Ne5 {Lachiche,D-Budin,A ICCF 2012 0-1 (78)}) (5. Nb3 Bb6 6. Nf3 Nc6 (6... Qe7 7. O-O Nc6 8. a4 a5 9. Bg5 h6 10. Bxf6 Qxf6 11. e4 dxe4 12. dxe4 O-O 13. Qe2 Be6 14. Nbd2 Rfd8 15. c3 Rd7 16. Nc4 Bxc4 17. Qxc4 Rad8 18. Qe2 {Zowain,L-Cruz de la Osa,R (1896) ICCF 2013 1/2 (32)}) 7. a4 a5 8. Bg5 h6 9. Bd2 e4 10. Ng1 Bxf2+ 11. Kxf2 e3+ 12. Kf1 exd2 13. Qxd2 O-O 14. Nf3 Re8 15. Re1 Qd6 16. c3 Ra6 {Wilshusen,H (1434) -Rumyantsev,V (2197) ICCF 2018 0-1 (30)}) 5... O-O (5... Ng4 6. d4 exd4 7. Nb3 Qf6 8. Nf3 dxc3 9. Nxc5 cxb2 10. Bxb2 Qxb2 11. O-O c6 12. Rb1 Qxa2 13. Nxb7 O-O 14. Nd4 Ne5 15. e4 {1/2 (15) Baranyuk,A (2204)-Babychuk,V (2206) ICCF 2011}) 6. Ngf3 Qe7 7. O-O Rd8 8. b4 Bb6 9. Qc2 e4 10. Nd4 Bxd4 11. cxd4 Nc6 12. Nb3 Qxb4 13. Bg5 exd3 14. Qxd3 Qd6 15. e3 h6 {Schön,A (2497)-Strengell,O (2413) ICCF 2009 1/2 (52)}) (4. c3 Nc6 (4... Bd6 5. Nf3 (5. Bg5 c6 6. Nd2 Nbd7 7. Kf1 O-O 8. h3 h6 9. Bxf6 Nxf6 10. h4 Ng4 11. Nh3 f5 12. Qb3 Qe7 13. Re1 Be6 14. d4 f4 15. gxf4 exf4 16. Ng1 a5 {Ipekyilmaz,E (1600)-Lipcsei,S (1608) ICCF 2020 (27)}) 5... O-O 6. O-O Re8 (6... Nbd7 7. Qc2 c6 8. Nbd2 a5 9. e4 h6 10. Re1 Re8 11. b3 dxe4 12. Nxe4 Nxe4 13. dxe4 Bc5 14. Bh3 Qc7 15. Kg2 Rd8 16. Bb2 Nf8 17. Bxc8 Raxc8 {Alejos,P (2194)-Carrera O.,A (2211) ICCF 2017 1/2 (40)}) 7. Qc2 c6 8. e4 Nbd7 9. Nbd2 Qc7 10. Re1 a5 11. Nf1 a4 12. Ne3 dxe4 13. dxe4 b5 14. Nf5 Bf8 15. h3 Nc5 16. N3h4 {Fortin,M (1819)-Moisa,L ICCF 2007 0-1 (35)}) (4... c6 5. Nf3 ( 5. Bg5 Bf5 6. Nd2 Nbd7 7. Bh3 Bxh3 8. Nxh3 h6 9. Bxf6 Qxf6 10. O-O Bc5 11. e3 Qf5 12. d4 Bb6 13. Kg2 O-O 14. Ng1 Rae8 15. Ndf3 {Armstrong,J (1599)-Burridge, R (1986) ICCF 2015 0-1 (35)}) 5... Bd6 6. O-O O-O (6... Be6 7. Bg5 Nbd7 8. Nbd2 h6 9. Bxf6 Qxf6 10. a3 a6 11. Kh1 g5 12. Ng1 h5 13. Ndf3 O-O-O 14. Re1 Rdg8 15. Rf1 h4 16. h3 hxg3 17. fxg3 Qh6 18. Nh2 {Armstrong,J (1536)-Neil,C (1415) ICCF 2017 1-0 (48)}) 7. Bg5 Nbd7 8. Kh1 h6 9. Bd2 (9. Be3 Qc7 10. Nbd2 Ng4 11. Bh3 Ndf6 12. Bxg4 Nxg4 13. h3 Nxe3 14. fxe3 Bxh3 15. Rf2 e4 16. Ng1 Be6 17. Nf1 { Armstrong,J (1481)-Gilbert,R (1781) ICCF 2019 0-1 (52)}) 9... e4 10. dxe4 Nxe4 11. Nd4 Ndf6 12. f3 Nc5 13. Nb3 Qe7 14. Nd4 Re8 15. b4 Ncd7 16. Nf5 {Armstrong, J (1506)-Gilbert,R (1699) ICCF 2020 1-0 (52)}) (4... Bc5 5. Qc2 O-O 6. b4 Bb6 7. a4 c6 8. a5 Bc7 9. Nd2 Bf5 10. e4 dxe4 11. dxe4 Be6 12. Ngf3 Qe7 13. O-O Nbd7 14. Ng5 Rfd8 15. Nxe6 Qxe6 16. Bb2 {Wilshusen,H (1625)-Woodhouse,S (1644) ICCF 2014 1-0 (44)}) (4... h6 5. Na3 c6 6. Nc2 Bd6 7. Nf3 a5 8. O-O Be6 9. b3 O-O 10. Bb2 Re8 11. c4 Nbd7 12. a3 b5 13. Nd2 Rb8 14. Qc1 bxc4 15. bxc4 h5 16. h4 {Badger,J (1765)-Smith,R (1921) ICCF 2019 1-0 (25)}) (4... Be7 5. e3 O-O 6. Ne2 c6 7. O-O Bf5 8. Nd2 Bxd3 9. Re1 Nbd7 10. Nb3 Bg6 11. f4 Re8 12. fxe5 Nxe5 13. Nf4 Be4 14. Nd4 Bxg2 15. Kxg2 Ne4 16. Nf3 {Brown,F (1899)-Cacko,J (2162) ICCF 2013 0-1 (31)}) (4... Be6 5. Bg5 Be7 6. Nf3 Nbd7 7. Qc2 h6 8. Bxf6 Bxf6 9. Nbd2 O-O 10. O-O c6 11. e4 Rc8 12. Kh1 c5 13. c4 dxc4 14. dxc4 b6 15. Rad1 Re8 16. Nb1 {Wilshusen,H (1314)-Tago,S (1503) ICCF 2020 1-0 (39)}) 5. Bg5 (5. Nf3 Bd6 6. O-O O-O 7. Qc2 e4 8. dxe4 Nxe4 9. Nbd2 f5 10. Rd1 Qe7 11. Nd4 Nxd4 12. cxd4 Bd7 13. Nf3 c5 14. e3 Rac8 15. dxc5 Rxc5 16. Qb1 Ba4 {Fortin,M (1666) -Akkaraju,S (2052) ICCF 2009 0-1}) (5. b4 Bd6 6. Nf3 O-O 7. a4 e4 8. dxe4 dxe4 9. Nd4 Nxb4 10. O-O Nbd5 11. Qc2 c5 12. Nb5 Bb8 13. Rd1 Qe7 14. Bg5 h6 15. Rxd5 hxg5 {Niewold,J (1712)-Meiners,E (2343) ICCF 2012 0-1 (25)}) (5. Qa4 Bd7 6. Qc2 Bc5 7. e3 O-O 8. Ne2 Bf5 9. h3 Qd7 10. Kf1 Bg6 11. Bd2 Rfe8 12. Be1 a5 13. Nd2 a4 14. Rd1 b5 15. Kg1 h6 16. Nf1 Na5 {Ipekyilmaz,E (1532)-Belmar Juaranz,C (2260) ICCF 2015 0-1 (56)}) 5... Be6 6. Bxf6 gxf6 7. Bh3 Qd7 8. Bxe6 fxe6 9. e3 O-O-O 10. Nd2 Rg8 11. Ngf3 d4 12. exd4 exd4 13. c4 Qf7 14. O-O Be7 15. a3 h5 { Armstrong,J (1661)-Binnie,J ICCF 2008 1-0 (47)}) (4. Bg5 Be7 5. Nf3 (5. Bxf6 Bxf6 6. c3 (6. Nc3 c6 7. Nf3 Be6 8. e3 O-O 9. O-O Nd7 10. Kh1 Re8 11. Ng1 Nb6 12. a3 Qc7 13. Na2 a5 14. c3 c5 15. d4 cxd4 16. exd4 e4 17. b3 a4 {Armstrong,J (1536)-Anderson,J (1788) ICCF 2017 0-1 (33)}) 6... O-O (6... Nc6 7. Qc2 Be6 8. Nd2 O-O 9. Kf1 Qd7 10. Re1 d4 11. Be4 Bd5 12. Ngf3 Ne7 13. Bxd5 Qxd5 14. Ne4 Qc6 15. Kg2 Ng6 16. Rc1 Be7 {Ipekyilmaz,E (1700)-Lipcsei,S ICCF 2017 1-0 (29)}) 7. Qc2 (7. Qb3 c6 8. Nf3 a5 9. Nbd2 Na6 10. Rd1 Nc5 11. Qc2 Bf5 12. Nb3 Nxb3 13. Qxb3 a4 14. Qc2 g6 15. Nd2 Re8 16. c4 b5 17. c5 h5 18. h3 b4 {Ipekyilmaz,E (1710)-Bourgault,J ICCF 2018 0-1 (37)}) 7... c6 8. Nd2 Be6 9. Kf1 Nd7 10. Re1 Qb6 11. Bh3 Bxh3+ 12. Nxh3 Rfe8 13. Kg2 Rac8 14. Ng1 a5 15. Ngf3 Nc5 16. Rhf1 Rcd8 {Ipekyilmaz,E (1700)-Lorenz,H (1737) ICCF 2017 1/2}) (5. Nc3 Be6 6. e4 d4 7. Bxf6 gxf6 8. Nd5 Bf8 9. Qf3 Bg7 10. a3 h5 11. Bh3 a5 12. c3 c6 13. cxd4 cxd5 14. Bxe6 fxe6 15. dxe5 Nc6 {Mayes,F (1335)-Bourgault,J (1824) ICCF 2018 0-1}) 5... h6 6. Bxf6 Bxf6 7. Nc3 (7. Nbd2 c6 8. O-O O-O 9. Rc1 Be6 10. c3 Nd7 11. Nb3 a5 12. a3 a4 13. Nbd2 Re8 14. e4 Nc5 15. Ne1 Ra5 16. b4 axb3 {Hjorth,J (2022)-Nørrelykke,S (2345) ICCF 2011 0-1 (32)}) 7... c6 8. e4 d4 9. Ne2 c5 10. Nd2 Nc6 11. O-O h5 12. f4 h4 13. fxe5 Nxe5 14. Nf3 Nxf3+ 15. Bxf3 hxg3 { Cardenas,I (1441)-López de Jerónimo,F (2272) ICCF 2013 0-1}) (4. c4 dxc4 (4... Nc6 5. cxd5 Nxd5 6. Nf3 Be7 7. a3 O-O 8. O-O Be6 9. b4 Bf6 10. e4 Nb6 11. Bb2 Qd7 12. Re1 Rfd8 13. Bf1 Na4 14. Qc2 Nxb2 15. Qxb2 a5 {Piersig,K (2295) -Philippeit,B (2281) ICCF 2013 1/2 (39)}) 5. Qa4+ c6 6. Qxc4 Qa5+ (6... Be6 7. Qc3 (7. Qc2 Bd6 8. Nc3 O-O 9. Nf3 h6 10. O-O Nbd7 11. Rb1 a5 12. a3 b5 13. b4 Qb6 14. Be3 Qc7 15. Nd2 a4 16. Rbc1 Rac8 17. Qb2 Qb8 18. Nce4 Be7 {Tanner,A (1606)-Holt,F (1664) ICCF 2015 1-0 (46)}) 7... Nbd7 8. Nd2 (8. Bd2 a5 9. Nf3 Bb4 10. Qc2 O-O 11. Nc3 h6 12. d4 exd4 13. Nxd4 Bg4 14. O-O-O Re8 15. h3 Bh5 16. g4 Bg6 17. Nf5 Bxf5 18. Qxf5 Re5 19. Qd3 Nc5 {Thompson,E (1773)-Laine,E (1894) ICCF 2007 1-0 (41)}) 8... Nd5 9. Bxd5 cxd5 10. b3 Rc8 11. Qb2 Bb4 12. a3 Bc3 13. Qb1 Bxa1 14. Qxa1 O-O 15. Ngf3 Bh3 16. Bb2 Re8 17. Nxe5 Nxe5 18. Bxe5 { Kayaalp,B (1727)-Yelken,A ICCF 2012 0-1 (25)}) 7. Bd2 Qb6 8. Nf3 Qxb2 9. Ng5 h6 10. Qxf7+ Kd8 11. Nf3 Qxa1 12. O-O Qb2 13. Ba5+ b6 14. Bc3 Qb5 15. Nxe5 Be7 { Schön,A (2497)-Haraldsson,H (2396) ICCF 2009 1-0 (32)}) (4. e3 Nc6 (4... c5 5. d4 (5. Ne2 Nc6 6. f3 Be7 7. a3 O-O 8. O-O Be6 9. b3 Qc7 10. e4 d4 11. c3 Rac8 12. c4 a6 13. b4 cxb4 14. axb4 Bxb4 15. Bd2 Bxd2 16. Qxd2 Qd6 {Santamaría Quintana,I (1442)-Armenteros Generoso,P (1738) ICCF 2016 0-1 (27)}) 5... exd4 6. exd4 cxd4 7. Qxd4 Nc6 8. Qd3 Bc5 9. Ne2 Nb4 10. Qb5+ Nd7 11. Qa4 O-O 12. a3 Nb6 13. Qb3 Nc6 14. Nbc3 Re8 15. Qb5 Nd4 16. Qxc5 {Ipekyilmaz,E (1530)-Kuuse,K (1995) ICCF 2016 0-1 (45)}) (4... Bd6 5. d4 (5. Ne2 O-O (5... c6 6. Nd2 O-O 7. O-O Na6 8. b3 Re8 9. Bb2 Be6 10. e4 d4 11. f3 c5 12. Rf2 b5 13. Nf1 Qc7 14. f4 exf4 15. Nxf4 Bxf4 16. Rxf4 Qe5 17. Nd2 {Morton,P (1840)-Dudeney,K (1821) ICCF 2015 1-0 (31)}) 6. O-O Re8 7. b3 c6 8. Bb2 a5 9. a3 Na6 10. Nd2 Qe7 11. c4 h6 12. cxd5 cxd5 13. Nc3 Nc7 14. h3 b6 15. e4 d4 16. Ne2 {Alejos,P (2226)-Borges, J (2203) ICCF 2019 1/2 (39)}) 5... c6 (5... Nc6 6. c3 (6. b3 exd4 7. Ne2 dxe3 8. fxe3 Bg4 9. Qd3 Nb4 10. Qd2 Ne4 11. Bxe4 dxe4 12. Nbc3 Bc5 13. Ba3 Bf3 14. Rf1 Qxd2+ 15. Kxd2 O-O-O+ 16. Nd4 Bxd4 17. exd4 Rxd4+ {Ipekyilmaz,E (1665) -Geryk,M (2165) ICCF 2016 0-1 (48)}) 6... O-O 7. b3 exd4 8. cxd4 Bf5 9. a3 Ne5 10. dxe5 Bxe5 11. Bb2 Bxb2 12. Ra2 Be5 13. Nf3 Bd6 14. Nc3 c6 15. Nd4 Bd7 16. Qd3 Qe7 {Ipekyilmaz,E (1700)-Kadonas,K (1899) ICCF 2017 0-1 (67)}) 6. Nf3 Bg4 7. dxe5 Bxe5 8. Nxe5 Bxd1 9. Kxd1 Nbd7 10. f4 Nxe5 11. fxe5 Ne4 12. Rf1 Qe7 13. a4 Qxe5 14. Bh3 Qh5+ 15. g4 Qxh3 16. Nd2 {Maki,H-McAree,J ICCF 2010 0-1}) (4... Bb4+ 5. Bd2 Bxd2+ 6. Nxd2 O-O 7. Ngf3 Re8 8. O-O Bg4 9. Qe1 c5 10. h3 Bh5 11. Nb3 Qb6 12. Rb1 Nbd7 13. Qa5 Qd6 14. Rfe1 b6 15. Qd2 Nf8 16. a3 {Armstrong,J (1643)-Longden,R (1719) ICCF 2011 0-1 (50)}) (4... e4 5. dxe4 dxe4 6. Qxd8+ Kxd8 7. Nc3 Bb4 8. Bd2 Nc6 9. Rd1 Bd7 10. a3 Bd6 11. Nxe4 Nxe4 12. Bxe4 Re8 13. Bg2 Kc8 14. Ne2 Ne5 15. O-O Bc6 16. Bxc6 {Armstrong,J (1484)-Gowans,T ICCF 2018 1-0 (34)}) 5. d4 (5. a3 Bd6 (5... Bg4 6. Ne2 h5 7. h3 Bf5 8. Nd2 Qd7 9. b4 a6 10. Bb2 O-O-O 11. Nf3 Bd6 12. Ng5 Nh7 13. Nxh7 Rxh7 14. b5 axb5 15. a4 b4 16. a5 b3 {Josefsson,K (2301)-Bunk,W (2423) ICCF 2007 0-1 (50)}) 6. Nc3 Be6 7. Nf3 h6 8. b4 O-O 9. Nb5 Qd7 10. Nxd6 cxd6 11. O-O Bh3 12. c4 dxc4 13. dxc4 Qe6 14. Qe2 a5 15. b5 e4 16. Nd2 Ne5 {Carnevale,R (2154)-Van Damme,L (2265) ICCF 2009 0-1 (46)}) (5. c3 Bf5 6. Ne2 Qd7 7. O-O Bh3 8. Nd2 h5 9. Nf3 Bxg2 10. Kxg2 h4 11. Nxh4 g5 12. Nf3 Qh3+ 13. Kg1 e4 14. Nf4 gxf4 15. Re1 fxg3 16. fxg3 Ne5 { Brown,F (1899)-Kappes,D (2322) ICCF 2013 0-1}) (5. e4 Bg4 6. f3 Be6 7. Be3 Qd7 8. Ne2 Be7 9. Rf1 O-O-O 10. Nd2 Kb8 11. a3 h6 12. Bg1 a6 13. Qc1 g5 14. exd5 Nxd5 15. Ne4 f5 16. Nc5 Bxc5 {Ipekyilmaz,E (1552)-Dmitriev,V (2386) ICCF 2016 0-1 (53)}) (5. Ne2 h5 6. h4 Bg4 7. f3 Be6 8. c3 Bd6 9. O-O Qd7 10. Nd2 O-O 11. b3 a5 12. a4 Rfe8 13. Bb2 Bh3 14. Qc2 Bc5 15. d4 exd4 16. cxd4 Rxe3 {Brown,F (1899)-Rutkus,R (2030) ICCF 2013 0-1 (28)}) 5... h5 (5... e4 6. b3 h5 (6... Bg4 7. f3 Bf5 8. c3 Bd6 9. Bb2 O-O 10. Nd2 a5 11. fxe4 Bxe4 12. Nxe4 Nxe4 13. Nh3 b5 14. Qe2 b4 15. c4 f5 16. cxd5 Qe7 17. dxc6 Nc3 18. Bxc3 {Ipekyilmaz,E (1661) -Hunt,J (1510) ICCF 2016 1-0 (33)}) 7. h3 Bd6 8. Bb2 Ne7 9. Nd2 b5 10. Ne2 c6 11. c3 a5 12. c4 O-O 13. c5 Bc7 14. a3 h4 15. g4 Ng6 16. Qb1 Qe8 17. Qc1 { Ipekyilmaz,E (1661)-Hendrich,T (1720) ICCF 2016 0-1 (53)}) (5... Bf5 6. c3 (6. a3 Bd6 7. Ne2 Qd7 8. b3 Bh3 9. Kf1 O-O-O 10. Bb2 h5 11. dxe5 Bxe5 12. Bd4 h4 13. Nbc3 Rh6 14. Bxe5 Nxe5 15. Qd4 Bxg2+ 16. Kxg2 h3+ 17. Kf1 Nc6 {Ipekyilmaz, E (1665)-Ledford,S (2194) ICCF 2016 0-1 (53)}) 6... Qd7 7. b3 O-O-O 8. Ne2 Bh3 9. Rg1 Kb8 10. Bb2 Bxg2 11. Rxg2 h5 12. Nd2 Bd6 13. c4 h4 14. gxh4 dxc4 15. bxc4 Qh3 16. Rxg7 Bb4 17. a3 {Ipekyilmaz,E (1665)-Hackenberg,T ICCF 2016 0-1 (68)}) (5... Bg4 6. f3 Be6 7. b3 Bb4+ 8. c3 Be7 9. Bb2 h5 10. Nd2 Qd7 11. Ne2 h4 12. c4 exd4 13. Nxd4 O-O-O 14. Qe2 Kb8 15. Rc1 h3 16. Bf1 Nxd4 17. Bxd4 { Ipekyilmaz,E (1665)-Ferreira,L (1808) ICCF 2016 1/2 (94)}) 6. b3 (6. h3 Bf5 7. a3 Qd7 (7... Bd6 8. b3 exd4 9. exd4 Qe7+ 10. Ne2 Nxd4 11. Ra2 Be4 12. Qxd4 Bxg2 13. Rh2 Be4 14. Bg5 c5 15. Qa4+ Kf8 16. Nd2 h4 17. Nxe4 dxe4 18. Kf1 Rh5 19. Bf4 {Ipekyilmaz,E (1552)-Solano Rodríguez,A ICCF 2016 0-1 (36)}) 8. b3 Bd6 9. Bb2 exd4 10. exd4 O-O-O 11. Nd2 g5 12. Kf1 g4 13. b4 h4 14. gxh4 Rxh4 15. hxg4 Rxh1 {Ipekyilmaz,E (1530)-Munaev,Z (2099) ICCF 2016 0-1 (34)}) 6... h4 7. Bb2 Bb4+ 8. c3 Bd6 9. Nd2 Qe7 10. Qe2 h3 11. Bf1 e4 12. Qd1 Bg4 13. Be2 Qe6 14. a3 O-O-O 15. c4 Qf5 {Ipekyilmaz,E (1552)-Eastlake,P ICCF 2016 0-1 (50)}) (4. e4 dxe4 5. dxe4 Qxd1+ 6. Kxd1 Be6 7. b3 Nc6 8. c3 Bc5 9. Ke2 a5 10. Ba3 Ba7 11. Nd2 Ng4 12. Nh3 f6 13. Nf1 a4 14. f3 Nd4+ 15. cxd4 Bxd4 {Thau,O (1704)-Perkins, K ICCF 2020 0-1 (26)}) 4... Bd6 (4... Nc6 5. Bg5 (5. b4 Bd6 6. Bb2 a5 7. b5 Ne7 8. Nd2 c6 9. Ngf3 Ng6 10. bxc6 bxc6 11. O-O O-O 12. e4 dxe4 13. Nxe4 Nxe4 14. dxe4 Rb8 15. Bc3 a4 16. Qd3 Bc7 {Boucher,B (1763)-Pradeilles,G (1819) ICCF 2020 1/2 (51)}) (5. Nc3 Be6 6. e4 a6 7. Bg5 Be7 8. Bxf6 Bxf6 9. exd5 Bxd5 10. Nxd5 O-O 11. Ne2 Re8 12. O-O Qd6 13. Nec3 Re6 14. Ne4 Bd8 {Raijmaekers,C (2047) -Pelias,M ICCF 2008 1-0}) (5. c3 Bd6 6. Qc2 O-O 7. Nd2 Bg4 8. b4 Re8 {0-1 (8) Guillot,M-Casella,S (2007) ICCF 2010}) (5. Nf3 Bd6 6. O-O O-O 7. c3 a5 { 0-1 (7) Guillot,M-Moskvichev,V (2036) ICCF 2010}) 5... Be7 6. Nc3 Be6 7. Bxf6 ( 7. e4 d4 8. Bxf6 Bxf6 9. Nce2 O-O 10. f4 Qd6 11. f5 Bd7 12. Nf3 a5 13. g4 Ra6 14. h4 Rb6 15. Qc1 Bc8 16. g5 Bd8 17. Kf2 f6 18. Ng3 Bd7 {Thau,O (1704) -Pivirotto,F (1827) ICCF 2020 0-1 (38)}) 7... Bxf6 8. e4 dxe4 9. Nxe4 Be7 10. Ne2 O-O 11. O-O f5 12. Nd2 Qd7 13. Nc3 Rad8 14. Nf3 f4 15. Qe2 Bf6 16. Rae1 { Thau,O (1704)-Ainsborough,G (1623) ICCF 2020 1-0 (35)}) (4... c6 5. Nc3 (5. Nf3 Bd6 6. O-O O-O 7. Nc3 (7. Bg5 Bf5 8. Nbd2 h6 9. Bxf6 Qxf6 10. c3 Nd7 11. Kh1 Bh7 12. Ng1 Qe6 13. Bh3 Qe7 14. Re1 f5 15. e3 Nf6 16. e4 fxe4 17. dxe4 Nxe4 18. Nxe4 Bxe4+ {Armstrong,J (1599)-Burridge,R (1986) ICCF 2015 0-1 (58)}) 7... Bg4 8. h3 Be6 9. e4 d4 10. Ne2 c5 11. Ng5 Bd7 12. f4 Nc6 13. Nf3 Nh5 14. f5 Rc8 15. g4 Nf4 16. Nxf4 exf4 {Josefsson,K (2301)-Pesonen,S (2341) ICCF 2007 1/2 (50)}) 5... Bd6 6. e4 Be6 7. h3 h6 8. f4 dxe4 9. Nxe4 Bc7 10. Ne2 Nxe4 11. dxe4 Qxd1+ 12. Kxd1 Nd7 13. Be3 Bb6 14. Bxb6 axb6 15. f5 Bc4 {Thau,O (1704)-Tomilin,A ICCF 2020 0-1 (31)}) (4... Bc5 5. b4 Bb6 6. Bb2 O-O 7. Bxe5 Bxf2+ 8. Kf1 Ng4 9. Bf4 Qf6 10. Nf3 Qxa1 11. h3 Bxg3 12. hxg4 Bxf4 13. Rh4 Qf6 14. Nbd2 Nc6 15. Nb3 Ne5 16. Nbd4 {Gradisar,M-Apsner,J (1929) ICCF 2005 0-1}) (4... Be6 5. Nc3 c5 6. e4 dxe4 7. Nxe4 Nc6 8. Nxf6+ gxf6 9. Bxc6+ bxc6 10. Ne2 c4 11. Nc3 cxd3 12. Qxd3 Qxd3 13. cxd3 Rb8 14. O-O Be7 15. b4 Rd8 16. Be3 {Gradisar,M-Tomazini,A ICCF 2006 0-1 (35)}) (4... h6 5. Nd2 c5 6. c3 Nc6 7. Ngf3 e4 8. Ng1 exd3 9. exd3 Be7 10. Ngf3 O-O 11. O-O Bg4 12. b4 Rc8 13. Nb3 c4 14. dxc4 Ne5 15. c5 Ne4 16. Nbd4 {Brandl,A (1963)-Stummerer,A (1927) ICCF 2014 1/2 (28)}) 5. Bg5 c6 6. Nc3 Nbd7 (6... h6 7. Bxf6 Qxf6 8. e4 d4 9. Nce2 c5 (9... g5 10. Nf3 Na6 11. h4 Rg8 12. hxg5 hxg5 13. Qd2 Be6 14. O-O-O O-O-O 15. Rh7 g4 16. Rh6 {Thau,O (1704) -Cvak,R (2420) ICCF 2020 0-1 (26)}) 10. Qd2 Nc6 11. f4 g5 12. f5 Bd7 13. g4 h5 14. gxh5 Rxh5 15. O-O-O b5 16. Nh3 b4 17. axb4 cxb4 18. Ng3 {Thau,O (1704) -Sisák,R (2286) ICCF 2020 0-1 (30)}) 7. e4 h6 8. Bxf6 Qxf6 9. exd5 O-O 10. Nge2 Bc7 11. Qd2 Nb6 12. dxc6 bxc6 13. O-O Rd8 {Thau,O (1704)-Cerne,P (1884) ICCF 2020 1/2}) (2. c3 e5 (2... Nf6 3. c4 c6 4. cxd5 Nxd5 5. Nf3 e6 6. Nc3 Be7 7. Bg2 Nxc3 8. bxc3 O-O 9. d3 Qa5 10. Bd2 Qc7 11. d4 Nd7 12. Qc2 c5 13. Bf4 Bd6 14. Bxd6 {Ipekyilmaz,E (1710)-Pihlajamäki,J (1571) ICCF 2018 0-1 (35)}) 3. c4 Nf6 4. cxd5 Qxd5 5. Nf3 e4 6. Nc3 Qa5 7. Nd4 Qe5 8. e3 Be7 9. Bg2 O-O 10. b3 Bd7 11. Bb2 Nc6 12. Nxe4 Nxe4 13. Nxc6 Qd5 {Ipekyilmaz,E (1710)-Fullen,P ICCF 2018 1-0}) (2. e3 Nf6 3. Nc3 (3. d3 c5 4. Bg2 Nc6 5. c3 (5. d4 e6 6. b3 cxd4 7. exd4 Bd6 8. Bb2 O-O 9. Nd2 b6 10. a3 Ba6 11. Ne2 Rc8 12. Rc1 h6 13. b4 Re8 14. Bh3 Rc7 15. Nf3 Ne4 16. Bg2 Qd7 {Ipekyilmaz,E (1530)-MacMillen,A (1681) ICCF 2016 1-0 (59)}) 5... e5 6. Qa4 Be7 7. Nf3 Bd7 8. Qc2 Qc7 9. b3 Bf5 10. Bb2 c4 11. Bf1 e4 12. dxe4 Bxe4 13. Qd1 cxb3 14. axb3 O-O {Armstrong,J (1484) -MacMillen,A (1468) ICCF 2018 0-1 (106)}) 3... Bg4 4. Be2 Bxe2 5. Qxe2 e6 6. Qb5+ Nbd7 7. Qxb7 Qb8 8. Qxb8+ Rxb8 9. a4 a6 10. b3 Bb4 11. Bb2 Bxc3 12. Bxc3 O-O 13. Bxf6 Nxf6 {Pettigrew,S (1504)-Richards,M (1326) ICCF 2018 0-1 (75)}) ( 2. Na3 Nf6 3. d4 e6 4. e3 Nc6 5. Bb5 h5 6. Nh3 Ng4 7. Nb1 Qf6 8. a4 h4 9. Qxg4 e5 {0-1 (9) Di Caccia,M-McCarthy,B ICCF 2006}) 2... dxc4 3. Bg2 e5 4. Qa4+ (4. Nf3 Bd6 5. d3 cxd3 6. exd3 Nf6 7. O-O O-O 8. d4 exd4 9. Bg5 c5 10. Na3 Nc6 11. Nc4 h6 12. Nxd6 Qxd6 13. Bxf6 Qxf6 14. a3 Bg4 15. b4 cxb4 {Anderson,L (1253) -Parsons,C (1787) ICCF 2015 0-1}) (4. Qc2 c6 5. Nf3 Nf6 6. Nxe5 Be6 7. Nxc4 a5 8. O-O Be7 9. d3 O-O 10. Nc3 Na6 11. a3 a4 12. Ne4 Nxe4 13. dxe4 Qd4 14. Ne3 Bf6 15. f4 Rad8 {Dam,J (1811)-Clancey,J (1858) ICCF 2015 0-1 (35)}) 4... Bd7 ( 4... c6 5. Qxc4 Be6 6. Qc2 Nf6 (6... Nh6 7. Nf3 Na6 8. Nxe5 Nb4 9. Qd1 Nf5 10. O-O f6 11. Nf3 Nxa2 12. e3 Bd6 13. Qa4 Nb4 14. d4 O-O 15. e4 Ne7 16. Nc3 { Brotherton,T (2209)-Bontems,C (2218) ICCF 2019 1/2 (51)}) (6... Bd6 7. Nf3 Nf6 8. O-O Nbd7 9. d4 O-O 10. Nc3 h6 11. Rd1 Qe7 12. h3 Rfd8 13. e4 Rac8 14. Be3 b6 15. Rac1 Bc4 16. Nh4 Qf8 17. Nf5 Bb8 18. f4 {Gabrielian,A-Karasev,V (1898) ICCF 2017 0-1 (38)}) 7. Nc3 Nbd7 8. Nf3 Bc5 9. O-O O-O 10. a3 a5 11. e3 Qb6 12. Na4 Qb5 13. Nxc5 Nxc5 14. d4 Nb3 15. Rb1 exd4 16. Nd2 {Tibbert,P (1795) -Lindberg,W (1667) ICCF 2014 0-1 (27)}) 5. Qxc4 Nc6 6. Nf3 (6. Nc3 Nf6 7. Nf3 Be7 8. d3 h6 9. Nd5 Be6 10. Nxf6+ Bxf6 11. Qa4 O-O 12. O-O Re8 13. Be3 Nd4 14. Nxd4 exd4 15. Bf4 c6 16. Bf3 a5 17. Qc2 Qb6 {Larsen,N (1910)-Struzka,V (2047) ICCF 2013 1/2 (60)}) 6... Nf6 (6... Bd6 7. d4 exd4 8. Nxd4 Nge7 9. Nc3 O-O 10. O-O Nxd4 11. Qxd4 Bc6 12. e4 Qd7 13. Be3 Rfd8 14. Rad1 Qe8 15. Nd5 {De la Fuente Gonzalez,F (2127)-Satici,A (2354) ICCF 2006 1/2 (36)}) 7. O-O Be7 8. d3 (8. Rd1 Be6 9. Qa4 Nd7 10. d4 Nb6 11. Qc2 exd4 12. Nc3 O-O 13. a3 Qd7 14. Be3 Bf5 15. Qc1 Bf6 16. b4 d3 17. exd3 Bg4 18. Rb1 Qf5 {0-1 (18) Król,P (1752) -Nicotera,A ICCF 2011}) 8... O-O 9. Nbd2 (9. Bg5 h6 10. Bxf6 Bxf6 11. Nc3 Be6 12. Qa4 Nd4 13. Nd2 Bd7 14. Qd1 c6 15. e3 Ne6 16. Nc4 g6 17. b4 Bg7 18. Rb1 Rc8 19. Qc2 Qe7 20. a4 b6 {Schade,D (2489)-Jensen,E (2502) ICCF 2013 1/2 (56)}) 9... Be6 10. Qc2 Nd7 (10... Nd5 11. a3 a5 12. Nc4 {1-0 (12) Grego,L (2319) -Shnyrev,V (2310) ICCF 2015}) 11. Nc4 f6 12. a3 a5 {O'Hare,C (2433)-Delizia,C (2447) ICCF 2015 1/2}) (1. Na3 e5 (1... d5 2. Nf3 (2. c4 c6 (2... e5 3. Nf3 e4 4. Nd4 dxc4 5. e3 a6 6. Nxc4 c5 7. Nc2 b5 8. Ne5 Qd5 9. f4 Nh6 10. Be2 f6 11. Ng4 Bxg4 12. Bxg4 Nxg4 13. Qxg4 f5 14. Qe2 {Kaytazki,L (1418)-Veselinov,R (2107) ICCF 2019 0-1 (63)}) (2... e6 3. Nf3 Bxa3 4. Qa4+ Bd7 5. Qxa3 dxc4 6. e3 Ne7 7. Bxc4 Nbc6 8. O-O O-O 9. d4 h6 10. e4 Ng6 11. Rd1 Qe7 12. Qc3 a6 13. b3 b5 14. Bd3 {Rheindt,S (1587)-Jakobi,W (1582) ICCF 2019 1/2 (28)}) (2... Nf6 3. Nf3 Nc6 4. d4 e6 5. e3 Bxa3 6. bxa3 dxc4 7. Bxc4 Na5 8. Qa4+ c6 9. Bd3 O-O 10. Bd2 b5 11. Qxa5 {1-0 (11) Kaytazki,L (1506)-Ivanov,P (1531) ICCF 2020}) 3. d4 Bf5 4. Qb3 Qd7 5. Nf3 Qc7 6. Bf4 Qb6 7. cxd5 Qxb3 8. axb3 cxd5 9. Nb5 Na6 10. Rxa6 {1-0 (10) Rheindt,S (1587)-Davis,J (1240) ICCF 2019}) (2. d4 a6 (2... e6 3. c3 Nf6 4. Nc2 h6 5. e3 c5 6. Nf3 Nc6 7. Bb5 Bd7 8. Ne5 Nxe5 9. dxe5 Bxb5 10. exf6 Qxf6 11. Na3 Bc6 12. O-O Bd6 13. e4 Rd8 14. exd5 {Kaytazki,L (1418) -Analiev,D (1885) ICCF 2019 0-1}) (2... Nf6 3. c4 c6 4. Nf3 Bg4 5. e3 e6 6. Nc2 Nbd7 7. h3 Bh5 8. Be2 Bd6 9. c5 Bc7 10. b4 Ne4 11. Bb2 O-O 12. a4 a6 13. a5 Qe7 14. Nd2 {Wolff,N-Nurmi,R (1651) ICCF 2010 1/2 (36)}) 3. Nf3 h6 4. c4 Nf6 5. Bf4 e6 6. e3 c6 7. Bd3 Nbd7 8. c5 b6 9. b4 b5 10. Nc2 Be7 11. a4 Bb7 12. Nd2 O-O 13. O-O Re8 {Wolff,N-Kohler,D ICCF 2010 1-0 (41)}) 2... Nc6 (2... a6 3. c4 d4 4. e3 d3 5. Qb3 Nc6 6. Bxd3 e5 7. Be4 Nge7 8. d4 f5 9. Bxc6+ Nxc6 10. d5 e4 11. dxc6 exf3 12. cxb7 fxg2 13. bxa8=Q gxh1=Q+ 14. Qxh1 {Rheindt,S (1587)-Schenker, L (1300) ICCF 2019 1-0 (34)}) (2... c6 3. e3 Bg4 4. d4 Nd7 5. Be2 Ngf6 6. O-O e6 7. c4 Bxa3 8. bxa3 O-O 9. Qb3 Rb8 10. Rb1 Ne4 11. Rb2 Nb6 12. c5 Nd7 13. Ne1 Bxe2 14. Rxe2 {Guillot,M-Deskin,G (2055) ICCF 2013 0-1 (29)}) (2... e6 3. g3 Nf6 4. Bg2 c5 5. O-O Nc6 6. d3 Be7 7. e4 dxe4 8. dxe4 Nxe4 9. Qe2 f5 10. Rd1 Qc7 11. Bf4 e5 12. Nb5 Qb6 13. Nxe5 Nxe5 14. Bxe5 {Gibson,T-Knox,A (1656) ICCF 2012 1-0}) 3. d4 (3. g3 e5 4. d4 e4 5. Ne5 Bd6 6. Bg2 Nxe5 7. dxe5 Bxe5 8. c3 f5 9. e3 Nf6 10. O-O O-O 11. Nb5 a6 12. Nd4 c5 13. Ne2 Bd7 14. Rb1 Qe7 { Bernardara,E (1290)-Mora Collao,F ICCF 2020 0-1 (34)}) 3... Nf6 4. Bf4 Nh5 5. Bd2 Nf6 6. e3 Bg4 7. c4 e5 8. dxe5 Bxf3 9. gxf3 Nxe5 10. f4 Nc6 11. Qb3 Qd7 12. Bg2 Bxa3 13. bxa3 {Gibson,T-Moen,K (1785) ICCF 2012 1-0}) (1... Nf6 2. c3 (2. f4 d5 3. Nf3 c5 4. e3 Nc6 5. b3 g6 6. Bb2 Bg7 7. Be2 O-O 8. O-O a6 9. Ne5 Nxe5 10. fxe5 Nd7 11. d4 b5 12. c3 cxd4 13. cxd4 f6 {Kaytazki,L (1478)-Belchev,B (2146) ICCF 2020 1/2 (69)}) 2... g6 3. Nf3 Bg7 4. e3 b6 5. Qc2 Bb7 6. Bc4 O-O 7. Bd3 d6 8. Qb3 Nc6 9. h4 Qd7 10. Qb4 a5 11. Qf4 e5 12. Qh2 e4 13. Bc2 { Marpaung,N-Law,K (1174) ICCF 2020 1-0 (46)}) (1... e6 2. e4 Nc6 3. Nf3 Bxa3 4. bxa3 d5 5. e5 Nge7 6. d4 a6 7. Bd3 h6 8. O-O O-O 9. c3 Ng6 10. a4 f5 11. exf6 Qxf6 12. Bc2 Bd7 13. Ba3 {Gibson,T-Azzi,R (1870) ICCF 2012 1-0 (30)}) (1... g6 2. Nf3 Bg7 3. d4 Nf6 4. e3 d6 5. Be2 O-O 6. O-O Re8 7. b3 Nbd7 8. Bb2 a6 9. c4 e5 10. dxe5 Ng4 11. Qc2 Ndxe5 12. Rad1 Bf5 13. Qc1 {Guillot,M-Alejos,P (1976) ICCF 2013 0-1 (38)}) 2. d4 (2. Nc4 e4 (2... Nc6 3. e4 (3. Nf3 e4 4. Ng1 d5 5. Ne3 Nf6 6. c4 Bb4 7. a3 Be7 8. Qb3 Nd4 9. Qc3 Nf5 10. Nxf5 Bxf5 11. e3 O-O 12. cxd5 Nxd5 13. Qb3 Nb6 14. Bc4 Nxc4 {Bautista,E (1497)-Hooper,T ICCF 2014 1-0 (47)}) 3... Nf6 (3... d5 4. exd5 Qxd5 5. Ne3 Qd6 6. c3 Nf6 7. Nf3 e4 8. Nc4 Qe7 9. Nd4 Nxd4 10. cxd4 Be6 11. b3 Nd5 12. Ba3 Qg5 13. Bb2 O-O-O 14. a3 Bd6 15. Qc2 {Kaytazki,L (1421)-Gavrijski,D (2177) ICCF 2019 0-1 (70)}) (3... f5 4. d3 d5 5. exd5 Qxd5 6. Nf3 Be7 7. Qe2 e4 8. dxe4 fxe4 9. Nfe5 Nf6 10. Nxc6 Qxc6 11. Ne3 a6 12. Qc4 Qd6 13. Qc3 Be6 14. Bc4 O-O-O 15. Bd2 {Kaytazki,L (1478)-Kotzev, M (2382) ICCF 2020 0-1 (47)}) (3... g6 4. Nf3 Bg7 5. d3 d5 6. exd5 Qxd5 7. c3 Nge7 8. g3 O-O 9. Ne3 Qd7 10. Be2 b6 11. h4 h6 12. h5 g5 13. Nxg5 hxg5 14. h6 Bf6 15. Bf3 {Kaytazki,L (1506)-Dimitrov,D (2361) ICCF 2020 0-1 (46)}) 4. d3 (4. Bd3 d5 5. c3 dxc4 6. Bxc4 Na5 7. Qa4+ Nc6 8. Bb3 a6 9. Qc4 Be6 10. Qe2 Bxb3 11. axb3 Bc5 12. b4 Bb6 13. Nh3 O-O 14. d3 Qd7 15. Qf3 Rad8 {Pye,J-Barbosa,A ICCF 2010 0-1 (31)}) 4... d5 5. exd5 Nxd5 6. Nf3 Bd6 7. g3 Bg4 8. Bg2 O-O 9. O-O Qd7 10. c3 Nf6 11. Bg5 Qf5 12. Ne3 Qg6 13. Nxg4 Nxg4 14. Qa4 {Kaytazki,L (1478) -Analiev,D (1642) ICCF 2020 1-0 (33)}) (2... d6 3. e4 Be6 4. d4 Nc6 5. d5 Bd7 6. dxc6 Bxc6 7. Bd3 Nf6 8. Bg5 Be7 9. Qe2 O-O 10. Nf3 h6 11. Bh4 b5 12. Na5 Bd7 13. Bxf6 Bxf6 14. b4 {Wolff,N-Lewis,K ICCF 2010 1-0 (42)}) 3. Ne3 (3. d3 d5 4. Nd2 Nf6 5. e3 Bc5 6. Nb3 Bd6 7. dxe4 dxe4 8. h3 O-O 9. Ne2 Qe7 10. c3 Rd8 11. Qc2 c5 12. c4 Nc6 13. a3 Ne5 14. Nc3 Bf5 {Guillot,M-Ellis,J (2053) ICCF 2013 0-1 (30)}) (3. d4 d5 4. Nd2 Nf6 5. e3 c5 6. Ne2 Nc6 7. h3 a6 {0-1 (7) Wolff,N (1674)-Grossi,K (2077) ICCF 2012}) 3... d5 4. d4 Nf6 5. Bd2 (5. g3 c5 6. Bh3 cxd4 7. Qxd4 Nc6 8. Qd1 d4 9. Nf1 Bxh3 10. Nxh3 Qa5+ 11. Bd2 Qf5 12. Nf4 g5 13. Ng2 O-O-O 14. h3 e3 15. Nfxe3 dxe3 16. Nxe3 Qe5 {Kaytazki,L (1421)-Lüthi,T (1921) ICCF 2019 0-1 (28)}) 5... c5 6. c3 cxd4 7. cxd4 Nc6 8. Nc2 Bd6 9. e3 O-O 10. a3 Ng4 11. g3 Qf6 12. f4 exf3 13. Qxf3 Bf5 {Kaytazki,L (1418)-Gavrijski,D (2151) ICCF 2019 0-1}) (2. g3 Nc6 3. d3 (3. Bg2 d5 4. d3 Nf6 5. Nf3 Bxa3 6. bxa3 O-O 7. O-O e4 8. Nd2 Bf5 9. Nb3 Re8 10. Qd2 a5 11. a4 b6 12. Qf4 Qd7 13. Rd1 exd3 14. exd3 Bh3 {Molin,L (1955)-Michaud,F (1859) ICCF 2019 1-0 (40)}) 3... Bxa3 4. bxa3 d5 5. Nf3 f6 6. Bg2 Be6 7. a4 Nge7 8. O-O b6 9. Ba3 Na5 10. Bb4 Nb7 11. c4 c5 12. Bc3 Nd6 13. Qc2 Rc8 {Molin,L (1864)-Kitaev,S ICCF 2015 0-1 (47)}) (2. Nb5 a6 3. Nc3 d5 4. d4 exd4 5. Qxd4 Be6 6. Qd3 d4 7. Ne4 Nc6 8. a3 Qd5 9. Ng5 Qa5+ 10. Bd2 Nb4 11. Qe4 Nf6 12. Qxb7 Nxc2+ 13. Kd1 Qa4 {Molin, L-Blondel,F (1997) ICCF 2015 0-1}) (2. d3 Bxa3 3. bxa3 c5 4. Nf3 Nc6 5. c4 Nge7 6. g3 d6 7. Bg2 b5 8. cxb5 Qa5+ 9. Nd2 Qxb5 10. f4 Bg4 11. fxe5 d5 12. Rb1 Qa6 13. O-O O-O {Molin,L (1912)-Blondel,F (1823) ICCF 2017 1/2 (46)}) (2. e3 d5 3. d4 Nc6 4. Bb5 Nge7 5. Nf3 e4 6. Nd2 a6 7. Be2 g6 8. O-O Bg7 9. c4 f5 10. Nc2 Be6 11. b3 Qd7 12. Re1 O-O 13. Ba3 Rfe8 {Molin,L (1912)-Roynet,S (2058) ICCF 2017 1/2 (100)}) (2. Nh3 Nf6 (2... d5 3. d3 c5 4. Bg5 f6 5. Bh4 Ne7 6. e3 Nf5 7. Bg3 Nxg3 8. hxg3 Nc6 9. Qd2 a6 10. Nb1 Be7 {0-1 (10) Bautista,E (1512) -Wright,D (1618) ICCF 2014}) 3. d3 d5 4. Bd2 Bc5 5. b4 Bb6 6. c4 a5 7. Qa4+ Bd7 8. b5 c6 9. f4 e4 10. e3 d4 11. Nc2 exd3 12. Nxd4 Bxd4 13. exd4 Bxh3 {Jokipii, G (1279)-Pajak,J ICCF 2014 0-1}) (2. g4 Nc6 3. Bg2 d5 4. d3 Bxg4 5. h3 Be6 6. f4 Qh4+ 7. Kf1 Qf6 8. e3 exf4 9. Nf3 Bxa3 {0-1 (9) Jokipii,G (1279)-MacTilstra, I ICCF 2014}) 2... exd4 3. Qxd4 Nc6 4. Qe3+ (4. Qe4+ Be7 5. e3 Nf6 6. Qf5 d5 7. Qg5 O-O 8. Bb5 Ne4 9. Qf5 Bxf5 10. Bxc6 bxc6 11. f3 Bb4+ 12. c3 Qh4+ 13. g3 Nxg3 14. hxg3 Qxh1 15. Kf2 Qh2+ {Mulevicius,V-Rimkus,B (1957) ICCF 2010 0-1}) 4... Be7 5. Qg3 Nf6 6. Qxg7 Rg8 7. Qh6 d5 8. Nf3 a6 (8... d4 9. h3 Rg6 10. Qf4 Nd5 11. Qe4 f5 12. Qd3 Bb4+ 13. Bd2 Nf4 14. Qb3 Be6 15. Qa4 Bxd2+ 16. Nxd2 a6 17. c4 d3 18. exd3 Rxg2 19. Bxg2 Nxg2+ 20. Kd1 {Gibson,T-Bogatov,D (2095) ICCF 2012 0-1 (42)}) (8... Rg6 9. Qe3 Ne4 10. Qb3 d4 11. c3 dxc3 12. bxc3 Be6 13. Qc2 Qd5 14. Nb5 Qxb5 15. Qxe4 Bf5 16. Qf4 Rd8 17. e4 Qa5 18. Bd2 Re6 19. Ng5 Rxd2 20. Kxd2 {Gibson,T-Rogers,M ICCF 2012 0-1 (34)}) 9. c3 Bc5 10. h3 Rg6 11. Qh4 Bf5 12. g4 Be4 {Gibson,T-Tyson,T ICCF 2012 0-1 (52)}) (1. h3 e5 (1... d5 2. c3 (2. b4 e5 3. Bb2 Nd7 4. a3 a5 5. b5 Ngf6 6. d4 e4 7. e3 {Nicotera,A (1983) -Liutaia,L (1997) ICCF 2020}) (2. g4 e5 3. Nf3 (3. c4 Be6 4. Bg2 c6 5. Qb3 b6 6. Qa4 Qf6 7. cxd5 Bc5 8. d4 Bxd4 9. e3 b5 {0-1 (9) Nossein,F (1607)-Leneveu,E ICCF 2011}) 3... e4 4. Nd4 c5 5. Nb5 Nc6 6. e3 Be6 7. N5c3 h5 8. Be2 Qh4 9. d3 hxg4 10. Bf1 O-O-O 11. Ne2 Ne5 12. Nf4 g3 13. Qe2 Nf3+ {Jeftha,L-Grego,L (1935) ICCF 2008 0-1 (25)}) 2... e5 (2... Nf6 3. d4 Nc6 (3... e6 4. Bf4 c5 5. e3 Qb6 6. Qb3 Nc6 7. Nd2 c4 8. Qxb6 axb6 9. Ngf3 b5 10. Be2 b4 11. O-O b5 12. cxb4 Bxb4 13. a3 Be7 14. Ne5 Bb7 15. Nxc6 {Rozumek,K (1859)-Kozlowski,S ICCF 2008 1/ 2 (42)}) 4. Bf4 e6 5. e3 Bd6 6. Bxd6 cxd6 7. Nd2 O-O 8. Bd3 e5 9. Ne2 a5 10. a4 Be6 11. Ng3 Qb6 12. Qb3 Qxb3 13. Nxb3 g6 14. O-O {Rozumek,K (1859)-Deren,M (2074) ICCF 2008 1-0 (30)}) 3. d4 e4 (3... Nc6 4. dxe5 Nxe5 5. Bf4 (5. Nd2 Nf6 6. Ngf3 Nc6 (6... Ng6 7. Nb3 h6 8. g4 Bd6 9. Bg2 a5 10. a4 O-O 11. g5 hxg5 12. Bxg5 Nf4 13. Bf1 Re8 14. e3 Bf5 15. Nfd4 Bg6 16. Rg1 Qe7 17. Qf3 Be4 18. Qd1 { Rozumek,K (1841)-Pareschi,R (2016) ICCF 2009 0-1 (36)}) 7. Nb3 Bd6 8. Bg5 Be6 9. e3 (9. Nbd4 O-O 10. e3 h6 11. Bxf6 Qxf6 12. Nb5 Rfd8 13. Nxd6 Rxd6 14. Nd4 Rad8 15. Nxc6 Rxc6 16. Qd4 Qe7 17. Bd3 Rb6 18. b3 c5 19. Qf4 c4 20. Bc2 d4 { Rozumek,K (1844)-Stanojevic,S (2280) ICCF 2010 0-1 (38)}) 9... h6 10. Bxf6 Qxf6 11. Bd3 O-O-O 12. Qc2 Kb8 13. O-O-O g6 14. Kb1 Rhe8 15. Nbd4 Nxd4 16. Nxd4 Bd7 {Rozumek,K (1841)-Jansen,U (2045) ICCF 2009 0-1 (36)}) 5... Ng6 6. Bh2 c6 (6... Nf6 7. Nf3 Bd6 8. Bxd6 Qxd6 9. e3 b6 10. Bd3 O-O 11. Nbd2 c5 12. O-O Bb7 13. a4 a5 14. Qc2 Rfe8 15. Rfd1 Qe7 16. Bb5 Red8 17. Re1 h6 18. Rad1 {Rozumek,K (1787) -Bobkov,A ICCF 2016 0-1 (32)}) 7. Nf3 Qb6 8. Qb3 Bc5 9. Qxb6 Bxb6 10. e3 N8e7 11. Bd3 Bf5 12. Bxf5 Nxf5 13. Nbd2 O-O-O 14. Nd4 Nfe7 15. a4 {Rozumek,K (1787) -Dostál,S (1752) ICCF 2016 1-0 (45)}) (3... exd4 4. cxd4 Bd6 (4... Nf6 5. Nf3 Be7 6. Nc3 a6 7. Bf4 Bd6 8. Bxd6 Qxd6 9. e3 O-O 10. Bd3 b6 11. O-O Bb7 12. Rc1 c5 13. Bb1 Nbd7 14. dxc5 bxc5 15. Qb3 Bc6 16. Qa3 {Rozumek,K (1764)-Bourgault, J (1850) ICCF 2019 1/2}) 5. Nf3 (5. Nc3 Nf6 6. Nf3 O-O 7. e3 c6 8. Bd3 h6 9. O-O Re8 10. Qc2 Nbd7 11. a3 a5 12. Bd2 Qe7 13. Rac1 Ne4 14. Rfd1 Nb6 15. Be1 Bf5 16. Nd2 Nxc3 {Rozumek,K (1844)-Niziolek,J (2016) ICCF 2010 0-1 (30)}) 5... Nf6 6. Bg5 c6 7. e3 Qa5+ 8. Nbd2 Ne4 9. Bd3 Nxg5 10. Nxg5 Qd8 11. f4 Qe7 12. Qe2 h6 13. Ngf3 O-O 14. O-O Re8 15. Rae1 {Rozumek,K (1859)-Kurowski,A (2026) ICCF 2008 1/2 (33)}) 4. Bf4 Nf6 (4... Bd6 5. Bxd6 Qxd6 6. e3 Nf6 7. Qb3 Nc6 8. Nd2 O-O 9. Ne2 Bd7 10. c4 Na5 11. Qc2 Nxc4 12. Nxc4 dxc4 13. Qxc4 h6 14. Qc2 Rfd8 15. Nc3 c5 16. Rd1 {Rozumek,K (1841)-Cakl,M (1961) ICCF 2009 0-1 (45)}) 5. e3 Be7 (5... a6 6. Nd2 Be7 7. Qb3 O-O 8. c4 c5 9. cxd5 cxd4 10. exd4 Nxd5 11. Bxb8 Rxb8 12. Bxa6 e3 13. fxe3 Bh4+ 14. Kf1 Qg5 15. Ngf3 Nxe3+ 16. Ke2 Qxg2+ 17. Kxe3 {Rozumek,K (1859)-Szymanski,R ICCF 2008 0-1}) 6. Nd2 O-O 7. Qb3 (7. Ne2 Nc6 8. Qb3 a5 9. a4 Ra6 10. Bh2 Rb6 11. Qc2 Bd7 (11... Bd6 12. Bxd6 Qxd6 13. Nf4 Ne7 14. Nb3 g5 15. Ne2 Nf5 16. Nxa5 Ra6 17. b4 Ra7 18. Nb3 Bd7 19. a5 Bb5 20. Nec1 Bxf1 21. Kxf1 b6 22. g3 Rb8 23. Kg2 {Rozumek,K (1841)-Foenander,P (2107) ICCF 2009 0-1 (38)}) 12. Nf4 Bd6 13. Nb3 Ne7 14. Nc5 Bc8 15. b4 g5 16. Ne2 Nf5 17. Bxd6 cxd6 18. bxa5 Rc6 {Rozumek,K (1841)-Rulfs,E (2054) ICCF 2009 0-1 (37)}) 7... c5 8. Ne2 c4 9. Qc2 Nc6 10. b4 Bxb4 11. g4 Bd6 12. Rb1 Rb8 13. a4 {Rozumek,K (1841)-Böhnke,H (2089) ICCF 2009 0-1 (31)}) (1... b6 2. e4 Bb7 3. Nc3 c5 (3... e6 4. Nf3 d5 5. exd5 exd5 6. d4 Nf6 7. Bd3 Be7 8. O-O O-O 9. Re1 Re8 10. Ne5 a6 11. Qf3 Nc6 12. Nxc6 Bxc6 13. Bf4 Bd6 14. Bg5 Rxe1+ 15. Rxe1 { Huybrecht,F (2187)-De Smet,K (2204) ICCF 2007 1/2 (43)}) 4. Be2 e6 5. Nf3 Nc6 6. O-O Nd4 7. d3 Ne7 8. Nxd4 cxd4 9. Nb5 Nc6 10. c3 Bc5 11. b4 Be7 12. Nxd4 Nxd4 13. cxd4 {Nicotera,A (1983)-Howard,J (1995) ICCF 2020 (27)}) (1... b5 2. g3 Bb7 3. Rh2 c5 4. Bg2 Bxg2 5. Rxg2 Nc6 6. d3 Nf6 7. Bg5 e6 8. Bxf6 Qxf6 9. c3 g6 10. Qc2 Bg7 11. Nf3 O-O 12. Nbd2 Rfc8 13. h4 {Ipekyilmaz,E (1700)-Kirk,T ICCF 2017 1-0 (44)}) 2. e3 (2. c4 Nf6 3. e3 Nc6 (3... d5 4. cxd5 Nxd5 5. Nc3 Nxc3 6. bxc3 Bd6 7. Nf3 O-O 8. e4 f5 9. Bc4+ Kh8 10. d3 Nc6 11. exf5 Bxf5 12. O-O h6 13. Bd5 Qd7 14. Qe2 Rad8 15. Be4 {Nicotera,A (1983)-Csiba,T (2159) ICCF 2020 1/2 (55)}) 4. Nc3 d5 5. cxd5 Nxd5 6. Nf3 Nxc3 7. bxc3 e4 8. Nd4 Ne5 9. Qc2 f5 10. Qb3 c5 11. Ne6 Qd6 12. Bb5+ Bd7 13. O-O Rc8 {Nicotera,A (1983)-Sorbi,L (2158) ICCF 2020 1/2 (30)}) (2. c3 d6 3. d4 Nd7 4. e4 g6 5. Bd3 Bg7 6. Be3 Ne7 7. Nf3 O-O 8. Nbd2 d5 9. dxe5 Nxe5 10. Nxe5 Bxe5 11. O-O Be6 12. Nf3 Bg7 13. Re1 Re8 {Rozumek,K (1787)-Bango,L ICCF 2016 1-0}) (2. a3 d5 3. c4 d4 4. d3 c5 5. Nf3 Bd6 6. e4 Ne7 7. Bd2 O-O 8. b4 f5 9. exf5 Bxf5 10. Ng5 Qd7 11. Be2 h6 12. Ne4 Bxe4 13. dxe4 a5 {Kaytazki,L (1506)-Stoykov,I (1909) ICCF 2020 1-0 (64) }) 2... d5 3. d4 Nc6 (3... Nd7 4. c4 Ngf6 5. Nf3 exd4 6. exd4 Bb4+ 7. Bd2 Bxd2+ 8. Nfxd2 O-O 9. Be2 dxc4 10. Nxc4 Nd5 11. Nc3 N7b6 12. Nxb6 axb6 13. Qd2 Be6 14. O-O c6 15. Rfe1 {Lockwood,A (2327)-Krakovský,P (2257) ICCF 2011 1/2}) 4. Nf3 e4 5. Nfd2 f5 6. c4 Nf6 7. Nc3 Be6 8. a3 (8. Qb3 a6 9. Be2 Be7 10. O-O b6 11. Qa4 Qd7 12. f3 Nb4 13. Qxd7+ Bxd7 14. Rb1 Nc2 15. fxe4 dxe4 16. Nb3 a5 17. Bd1 Nb4 18. Bd2 g6 19. Nc1 O-O {Lockwood,A (2327)-Hensel,O ICCF 2011 1/2}) 8... Qd7 9. b4 Bd6 10. c5 Be7 11. Bb5 a6 12. Qa4 Rb8 {Lockwood,A (2327)-Gebur,T (2233) ICCF 2011 0-1 (57)}) (1. h4 d5 (1... e5 2. e3 (2. d4 exd4 3. Nf3 Bb4+ ( 3... d5 4. Bg5 (4. c3 dxc3 5. Nxc3 Nf6 6. Bg5 Bb4 7. Qb3 Bxc3+ 8. Qxc3 c6 9. O-O-O h6 10. Bxf6 Qxf6 11. Qxf6 gxf6 12. Nd4 Be6 13. g3 Nd7 14. Bg2 O-O-O 15. b4 Kc7 {Vorontsov,G (1941)-Matyukhin,S (2507) ICCF 2018 0-1 (36)}) 4... f6 5. Bf4 c5 6. e3 dxe3 7. Nc3 Be6 8. Qe2 exf2+ 9. Kxf2 Kf7 10. Re1 Qd7 11. Qd2 c4 12. Rxe6 Qxe6 13. Nxd5 Bc5+ 14. Kg3 Qe4 15. b3 {Vorontsov,G (1941)-Lanin,B (2049) ICCF 2018 1-0 (32)}) 4. Bd2 Bc5 5. Bg5 Nf6 6. Nxd4 h6 7. Bf4 (7. Bxf6 Qxf6 8. e3 Nc6 9. c3 O-O 10. Nd2 d5 11. Nxc6 bxc6 12. Nb3 Bd6 13. g4 Re8 14. Nd4 c5 15. g5 Qe7 16. Ne2 Rb8 17. gxh6 d4 18. Rg1 dxe3 {Vorontsov,G (1835) -Sherwood,H (2330) ICCF 2020 0-1 (29)}) 7... d5 8. e3 Qe7 9. Bb5+ c6 10. Be2 O-O 11. c3 Bd6 12. Bxd6 Qxd6 13. g4 c5 {Vorontsov,G (1941)-Zhak,B (2532) ICCF 2018 0-1 (39)}) (2. h5 d5 3. h6 Nxh6 4. Nc3 (4. d4 Nc6 5. Bxh6 gxh6 6. dxe5 Nxe5 7. Qd4 Bg7 8. Qa4+ c6 9. Nd2 Qb6 10. b4 Ng4 11. Rb1 Qxf2+ 12. Kd1 Ne3+ 13. Kc1 Qe1# {0-1 (13) Michas,J-Seker,M ICCF 2013}) 4... Be6 5. Nf3 Nd7 6. Rh5 Bd6 7. d4 exd4 8. Nxd5 Bxd5 9. Rxd5 Ng4 10. Rxd4 Ngf6 11. e4 O-O 12. Bc4 Ng4 13. Ng5 Ngf6 {Bautista,E (1497)-Giroux,M (1712) ICCF 2014 0-1 (27)}) (2. c4 Nf6 3. Nc3 (3. g3 Bc5 4. Bg2 O-O 5. Nf3 e4 6. Ng5 d5 7. cxd5 Bf5 8. Nc3 Re8 9. d3 exd3 10. e4 h6 11. Kf1 Bc8 12. Bf4 Nbd7 13. Nh3 b5 14. Qxd3 b4 {Mannermaa,J (2449) -Rodríguez Fraga,Y (2439) ICCF 2019 (48)}) 3... Bb4 4. Nf3 Bxc3 5. dxc3 d6 6. g3 h6 7. Bg2 O-O 8. Qc2 a5 9. Bg5 Nbd7 10. Be3 Re8 11. Nh2 Nf8 12. O-O-O e4 13. Bd4 a4 {Mannermaa,J (2443)-Babic,D (2485) ICCF 2019 1/2 (27)}) (2. b4 d5 3. c3 Nf6 4. Nf3 Bd6 5. Qb3 Bf5 6. d3 Nc6 7. b5 Ne7 8. e4 dxe4 9. Ng5 O-O 10. d4 h6 11. Bc4 Bg6 12. h5 Nxh5 13. Bxf7+ Rxf7 {Rodríguez Padilla,N-Arteaga Hernández, L ICCF 2013 0-1}) (2. d3 d5 3. g3 (3. a4 Nf6 4. g4 Nxg4 5. f4 Bc5 6. b3 Bf2+ { 0-1 (6) Lacombe,D-Danylov,I ICCF 2015}) (3. Bg5 Nf6 4. Bxf6 Qxf6 5. e4 Qb6 6. Qf3 Qxb2 7. d4 Bb4+ 8. c3 Qxa1 9. Bd3 Bxc3+ {0-1 (9) Chiofalo,F-Fazio,S ICCF 2018}) 3... Nf6 4. Bg5 Nc6 5. Nd2 Bc5 6. Nb3 Bb6 7. a4 h6 8. Bxf6 Qxf6 9. e3 a5 10. Qf3 Qd6 11. c3 d4 12. exd4 exd4 13. Kd2 dxc3+ {Wilshusen,H (1464)-Perera,R ICCF 2019 0-1}) (2. g4 d5 3. g5 h6 (3... Bc5 4. Bg2 Bg4 5. c4 c6 6. cxd5 Ne7 7. Qa4 Bd7 8. dxc6 Bxc6 9. Bxc6+ Nbxc6 10. Nf3 O-O 11. e4 Qd3 12. Ng1 Nb4 13. Na3 Qxe4+ {0-1 (13) Irlbacher,R (1779)-Marshall,I (1844) ICCF 2018}) 4. d3 Be7 5. gxh6 Nxh6 6. h5 Nc6 7. Na3 Bxa3 8. bxa3 Qf6 9. Bd2 e4 {0-1 (9) Jokipii,G (1279) -Kloos,D ICCF 2014}) 2... d5 3. d4 (3. c4 Nf6 4. Nf3 d4 5. exd4 e4 6. Qe2 Bg4 7. d3 Bxf3 8. gxf3 Nc6 9. Be3 Bb4+ 10. Bd2 Nxd4 11. Qd1 Nxf3+ 12. Ke2 Qxd3# { 0-1 (12) Borisenko,D-Nixon,R (1754) ICCF 2012}) 3... exd4 4. exd4 Nf6 5. Nc3 Be7 6. Be3 O-O 7. Qd2 Re8 8. f3 c6 9. h5 b5 (9... a5 10. Bd3 Na6 11. g4 a4 12. a3 b5 13. Kf1 Nd7 14. Kg2 Nb6 15. b4 Nc7 16. Nh3 Ra7 17. Rae1 Rf8 18. Bg5 Ne6 19. Bxe7 Rxe7 20. h6 f5 21. gxf5 {Mannermaa,J (2449)-Horvat,M (2462) ICCF 2019 1/2 (38)}) 10. Bd3 h6 11. Kf1 b4 12. Na4 Ba6 13. Nc5 {Mannermaa,J (2449) -Kornev,A (2535) ICCF 2019 1/2}) (1... Nc6 2. h5 e5 3. Nf3 (3. h6 Nxh6 4. d4 exd4 5. Bxh6 gxh6 6. Nf3 Bg7 7. Rh4 d5 8. c3 h5 9. Rxh5 Bg4 10. Rh1 dxc3 11. Nxc3 d4 12. Ne4 Qe7 13. Ng3 O-O-O 14. Qd3 Nb4 {Michas,J-Wimmer,R ICCF 2007 0-1} ) 3... Nf6 4. h6 gxh6 5. b3 d5 6. Bb2 Be6 7. Nxe5 Qd6 8. Nd3 O-O-O 9. Ba3 Qd7 10. Nc5 Qd6 11. Nxb7 Kxb7 12. Bxd6 Bxd6 13. Nc3 {Bautista,E-Carrington,A (1624) ICCF 2013 1-0 (28)}) (1... Nf6 2. e3 (2. Nf3 h5 3. d4 e6 4. Bg5 Be7 5. e3 d5 6. c4 Ne4 7. Bf4 Bd7 8. Nc3 Nc6 9. Bd3 Bf6 10. Bxe4 Qe7 11. cxd5 O-O-O 12. dxc6 bxc6 13. Qa4 e5 {Potter,M-Anderson,L (1276) ICCF 2014 1-0}) (2. h5 d6 3. h6 Bf5 4. d3 Nc6 5. e4 Bg4 6. f3 Bd7 7. hxg7 Bxg7 8. d4 e6 9. Bh6 Bxh6 10. Rxh6 Qe7 11. Nc3 O-O-O 12. Qd2 d5 13. e5 Ng8 {Michas,J (1756)-Wilson,N (1590) ICCF 2017 1-0 (25)}) 2... e5 3. d4 exd4 4. Qxd4 Nc6 5. Qd3 d5 6. f4 Bg4 7. Nf3 Nb4 8. Nc3 Nxd3+ 9. Bxd3 Bd6 10. Bd2 O-O 11. O-O-O c6 12. Rdf1 a5 13. Ng5 {Oka,A-Sugimura, K ICCF 2012 0-1 (28)}) (1... e6 2. Nf3 b6 3. g3 Bb7 4. c3 Nf6 5. Ne5 Bxh1 6. d4 d6 7. Nc4 Bb7 8. e3 Nbd7 9. a4 Be7 10. d5 Nxd5 11. Qd4 Bf6 12. Qg4 O-O { 0-1 (12) Johal,A-Bristol,M (2170) ICCF 2006}) 2. d4 (2. Nh3 e5 3. Na3 Bxa3 4. bxa3 Qxh4 5. Bb2 Nc6 6. g3 Qa4 7. e3 Bg4 8. f3 Bf5 9. d3 f6 10. e4 dxe4 11. fxe4 Be6 12. g4 O-O-O 13. g5 f5 {Jokipii,G (1279)-Norlund,L ICCF 2014 0-1}) 2... c5 (2... Nf6 3. f3 c5 4. c3 Nc6 5. dxc5 e5 6. Bg5 Bxc5 7. b4 Be7 8. e3 Qb6 9. Bxf6 Bxf6 10. Qd2 O-O 11. h5 d4 12. b5 Na5 13. e4 Rd8 14. c4 {Borisenko, D-Meller,E (1891) ICCF 2012 0-1}) 3. dxc5 (3. e3 Nc6 (3... e6 4. Nf3 Nf6 5. b3 Nc6 6. Bb2 cxd4 7. exd4 Bb4+ 8. c3 Bd6 9. Bd3 O-O 10. O-O e5 11. dxe5 Nxe5 12. Nxe5 Bxe5 13. Nd2 Re8 14. Re1 h6 15. Qc2 {Mannermaa,J (2449)-Nekhaev,A (2470) ICCF 2019 1/2 (38)}) (3... Nf6 4. Nf3 Nc6 5. Be2 Bg4 6. b3 cxd4 7. Nxd4 Bxe2 8. Qxe2 Nxd4 9. exd4 e6 10. O-O Be7 11. Be3 Ne4 12. g3 O-O 13. c4 Rc8 14. Rc1 dxc4 15. bxc4 {Mannermaa,J (2450)-Koelewijn,A (2379) ICCF 2019 1/2 (25)}) 4. a3 cxd4 5. exd4 Nf6 6. Nc3 Bf5 7. Nge2 h6 8. Ng3 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bf4 Bd6 12. Bxd6 Qxd6 13. Nge2 Rb8 14. Nd1 O-O {Mannermaa,J (2449)-Siigur,J (2406) ICCF 2019 1/2 (37)}) (3. c4 cxd4 4. Nf3 e6 5. Nxd4 dxc4 6. e3 e5 7. Nb5 a6 8. Qxd8+ Kxd8 9. N5c3 Be6 10. Nd2 Nd7 11. Bxc4 Bxc4 12. Nxc4 Rc8 13. Nd2 Ngf6 14. a3 Bd6 {Mannermaa,J (2449)-Janisch,M (2433) ICCF 2019 1/2}) 3... e6 4. e4 Bxc5 5. exd5 exd5 6. Nc3 Nf6 7. Qe2+ Be6 8. Bg5 (8. Qb5+ Nbd7 9. Na4 a6 10. Qxb7 Ba7 11. c3 O-O 12. Be3 Bxe3 13. fxe3 Rb8 14. Qa7 Nb6 15. Nxb6 Rxb6 16. a4 Rxb2 17. Bd3 Ne4 18. Ne2 Bg4 19. Nf4 Ng3 {Vorontsov,G (1835)-Edwards,K (2255) ICCF 2020 0-1 (35)}) 8... O-O 9. O-O-O Nc6 10. Nf3 Re8 11. h5 h6 12. Bh4 Qc7 {Vorontsov, G (1941)-Popov,V (2230) ICCF 2018 0-1 (47)}) (1. e4 g6 (1... c6 2. d3 d5 3. Nd2 e5 (3... dxe4 4. dxe4 e5 5. Ngf3 Nd7 6. g3 Ngf6 7. Bg2 Bc5 8. O-O O-O 9. Qe2 ( 9. Nh4 g6 10. Qe2 a5 11. Nb3 Be7 12. a4 Qc7 13. Bg5 Re8 14. h3 b6 15. Rfd1 Ba6 16. c4 Nf8 17. Be3 c5 18. Qc2 Ne6 19. Nd2 Nd4 20. Qb1 Rad8 {Petruzzelli,R (1991)-Brewer,S ICCF 2008 0-1 (32)}) 9... Re8 (9... a5 10. Ne1 Qc7 11. Nd3 Ba7 12. b3 Nc5 13. h3 Be6 14. Kh2 Nxd3 15. cxd3 a4 16. Nf3 Nd7 17. Bb2 Qd6 18. bxa4 Bb6 19. Qc2 Qc5 20. Qb1 Rxa4 21. Nxe5 {Mehlhorn,U (2376)-Ruokokoski,H (2345) ICCF 2019 1/2 (50)}) 10. Nb3 Bf8 11. Bd2 Nc5 12. Nxc5 Bxc5 13. Rfd1 Qc7 14. a3 Bg4 15. h3 {Relyea,A (1924)-Winter,M ICCF 2013 1-0 (53)}) 4. g3 Nf6 5. Bg2 Bd6 (5... dxe4 6. dxe4 Bg4 (6... Be7 7. Ngf3 Qc7 8. O-O O-O 9. Qe2 Nbd7 10. a4 a5 11. Nh4 g6 12. Re1 b6 13. Nc4 Ba6 14. Bg5 Nc5 15. Nf3 Ne6 16. Bh6 Rfd8 17. Be3 Nd7 18. Bf1 {Muñoz Moreno,F (2390)-Mráz,M (2549) ICCF 2007 1/2}) (6... Bc5 7. Ne2 Qb6 8. O-O Ng4 9. Qe1 O-O 10. h3 Nf6 11. Nc4 Qb4 12. Qxb4 Bxb4 13. Nxe5 Re8 14. Nd3 Ba5 15. e5 Nd5 16. Nef4 Nxf4 17. Bxf4 Bf5 18. g4 {Guzmàn Figueroa,A (1490)-Grinsteinner,R (1516) ICCF 2020 0-1}) (6... Qc7 7. Qe2 Be7 8. Ngf3 c5 9. h3 O-O 10. Nc4 Nc6 11. Bg5 Nd4 12. Nxd4 cxd4 13. O-O h6 14. Bxf6 Bxf6 15. Na3 Rd8 16. Nb5 Qc6 17. c4 Be6 18. b3 {Wilshusen,H (1434)-Rivas Romero,G (2128) ICCF 2018 0-1 (28)}) 7. Ne2 Be7 8. O-O {1-0 (8) Voronkov,V-Fugger,C ICCF 2009}) (5... Bc5 6. Ngf3 Nbd7 (6... O-O 7. O-O Re8 8. c3 dxe4 9. dxe4 a5 10. Qc2 Qc7 11. a4 h6 12. Nc4 Nbd7 13. h3 b5 14. Ne3 Nb6 15. axb5 cxb5 16. Nd4 Bd7 17. Ndf5 a4 18. Qe2 {Musiani,C-Elisei,B ICCF 2008 0-1 (47)}) 7. O-O O-O 8. exd5 cxd5 9. d4 exd4 10. Nb3 Bb6 11. Nbxd4 Nc5 12. c3 Re8 13. h3 Nfe4 14. Bf4 Be6 15. Qc2 Rc8 16. Rfd1 Qf6 17. Be5 {Thau,O (1704)-Chidichimo,P ICCF 2020 1-0}) 6. Ne2 (6. h3 O-O 7. Ne2 Be6 8. O-O dxe4 9. Nxe4 Nxe4 10. dxe4 Bc5 11. Qxd8 Rxd8 12. b3 a5 13. Rb1 Na6 14. a3 Nc7 15. Nc3 b5 16. Nd1 b4 17. a4 f6 {Evans,S-Morgan,S (1970) ICCF 2007 0-1 (44)}) 6... dxe4 7. Nxe4 Nxe4 8. dxe4 Be6 9. O-O h5 10. h4 Qe7 11. Be3 Nd7 12. Qd2 O-O-O {0-1 (12) Guzmàn Figueroa,A (1490)-Hernandez Martinez,J (2246) ICCF 2020}) (1... e6 2. d4 d5 3. exd5 exd5 4. a3 Nf6 (4... Bd6 5. Nc3 c6 (5... Nf6 6. h3 Nc6 7. Nf3 Be6 8. Bb5 a6 9. Bxc6+ bxc6 10. Be3 Rb8 11. b4 O-O 12. Qe2 Ra8 13. Ne5 Bxe5 14. dxe5 Nd7 15. f4 f6 16. Bd4 Qe7 17. O-O {Martindale,R (1518)-Taylor,J ICCF 2013 0-1 (46)}) 6. h3 Ne7 7. Be2 Be6 8. Nf3 h6 9. O-O Nd7 10. b4 O-O 11. b5 Qc7 12. Bb2 Ng6 13. a4 Rfe8 14. bxc6 bxc6 15. Re1 Rab8 16. Ba3 {Matej,P (1631)-Boldocki,R ICCF 2011 0-1 (28)}) 5. c4 (5. Nf3 Be7 6. Bd3 O-O 7. c3 Re8 8. Be3 c5 9. dxc5 Bxc5 10. O-O Bxe3 11. fxe3 Rxe3 12. Be2 Qb6 13. b4 Rd3+ {0-1 (13) Dutt,B (1528)-Enoksson,B (1640) ICCF 2015}) 5... Be7 6. Nf3 O-O 7. Nc3 c5 8. Be2 dxc4 9. O-O cxd4 10. Nxd4 Qc7 11. Qa4 Bd7 12. Ndb5 Qc8 13. Qxc4 {Nitschke,N (2115)-Bragesjö,T (2153) ICCF 2020 1/2}) ( 1... c5 2. g3 g6 3. Bg2 Bg7 4. Nf3 (4. Nh3 Nc6 5. O-O e6 6. d3 Nge7 7. Bg5 Bxb2 8. Nd2 Bxa1 9. Qxa1 e5 10. Bf6 O-O 11. Bxe5 Nxe5 12. Qxe5 d6 13. Qg5 Bxh3 14. Bxh3 Nc6 15. Qh6 Qf6 {Armstrong,J (1610)-Crawford,R ICCF 2016 1-0 (67)}) 4... Nc6 (4... Nf6 5. Nc3 O-O 6. O-O Nc6 7. e5 Ng4 8. h3 Ngxe5 9. Nxe5 Bxe5 10. Re1 d6 11. d3 Be6 12. Bxc6 bxc6 13. Bh6 Re8 14. h4 Rb8 15. Rb1 Qa5 16. a3 {Aysel, E-Caliskan,I (2024) ICCF 2010 0-1 (34)}) 5. a3 d6 6. c3 Nf6 7. O-O Nxe4 8. d4 d5 9. dxc5 Nxc5 10. b4 Ne4 11. Nd4 O-O 12. Nxc6 bxc6 13. Bxe4 {Blanchard,A (1289)-Jenkins,R (2197) ICCF 2016 0-1}) 2. d4 Bg7 3. Nc3 d5 4. Nf3 dxe4 5. Nxe4 Nf6 (5... h6 6. Bc4 e6 7. Be3 Ne7 8. h4 Nd5 9. Qd2 Nxe3 10. Qxe3 Nc6 11. O-O-O Qe7 12. Qf4 O-O 13. Ne5 Na5 14. Be2 b6 15. g4 Bb7 16. g5 h5 17. Nf6+ { Kratochvíl,J (2098)-Moeckel,J (1757) ICCF 2010 1-0 (39)}) (5... Nc6 6. Bb5 Nf6 7. Bxc6+ bxc6 8. Nc5 O-O 9. Ne5 Qd5 10. O-O Rd8 11. Be3 Ne8 12. c4 Qxc5 13. dxc5 Rxd1 14. Raxd1 Bxe5 15. Rd8 f5 16. Rxe8+ Kf7 17. Rd8 {Ramsden,J (1765) -Büktas,B (1865) ICCF 2011 1/2 (45)}) (5... Bg4 6. Bc4 e6 7. h3 Bxf3 8. Qxf3 Qxd4 9. Bb5+ c6 10. Be3 Qb4+ 11. c3 Qxb2 12. Nd6+ Ke7 13. Qxf7+ Kxd6 14. Rd1+ { 1-0 (14) Van Reybrouck,H (1852)-Kemperman,H (1983) ICCF 2009}) 6. Nxf6+ Bxf6 7. c3 (7. Bc4 Qd6 (7... Nc6 8. c3 O-O 9. Bf4 Bg4 10. O-O Bxf3 11. Qxf3 e5 12. Bh6 Bg7 13. d5 Bxh6 14. dxc6 bxc6 15. Qxc6 Qd6 16. Qxd6 cxd6 17. Rfd1 Rfd8 18. Bd5 Rab8 19. Rab1 {Hjorth,J (2006)-Cvak,R (2328) ICCF 2009 1/2 (25)}) (7... c5 8. O-O cxd4 9. Bh6 Nc6 10. c3 Be6 11. Qb3 Bxc4 12. Qxc4 dxc3 13. bxc3 Qa5 14. Rad1 Qxc3 15. Qg4 Rd8 16. Rxd8+ Nxd8 17. Qa4+ Nc6 18. Rb1 Qa5 19. Qc2 {Rüfenacht,M (2390)-Sakhabeev,R (2413) ICCF 2007 1/2}) 8. c3 Bf5 9. Qb3 O-O 10. Qxb7 Nd7 11. Qa6 Nb6 12. Be2 c5 13. b4 cxd4 14. O-O dxc3 15. Be3 Qxb4 16. a3 Qa4 17. Nd4 Be4 18. Qxa4 Nxa4 {Baron,M (1846)-Needham,S ICCF 2018 0-1 (29)}) 7... O-O (7... Qd6 8. h3 Bf5 9. Bd3 Bxd3 10. Qxd3 Nd7 11. Be3 b6 12. b4 O-O 13. O-O e6 14. a4 Rfe8 15. Nd2 Bg7 16. Rfe1 f5 17. g3 h5 18. Nc4 Qd5 19. Rad1 {Ridout,P (1500)-White, C (1725) ICCF 2018 1/2 (59)}) 8. Bc4 Nd7 9. O-O c5 10. Bh6 Re8 11. Qb3 e6 12. Rfe1 cxd4 {Lebedev,V (2370)-Shpakovsky,A (2300) ICCF 2008 1-0 (63)}) (1. g4 e5 (1... Nc6 2. Bg2 (2. d4 d5 3. g5 h6 4. Bg2 Bf5 5. c4 e6 6. c5 hxg5 7. Nc3 Be7 8. e3 Nf6 9. Bd2 O-O 10. Nge2 Nb4 11. O-O c6 12. e4 Bg4 13. f3 Bh5 {Domenche Redondo,F (1717)-Santamaría Quintana,I (1411) ICCF 2017 1-0 (45)}) 2... d5 3. h3 e5 (3... f5 4. c4 e6 5. gxf5 Nf6 6. cxd5 exd5 7. e4 dxe4 8. Qe2 Bxf5 9. Nc3 Nd4 10. Qd1 e3 11. Qa4+ c6 12. Be4 Nxe4 13. fxe3 Qh4+ 14. Kd1 Nf2+ 15. Ke1 { Fernandez,Q (1455)-Sumny,M ICCF 2019 0-1}) 4. c4 Nge7 5. Nc3 dxc4 6. Qa4 Be6 7. Nf3 f6 8. Rg1 Ng6 9. Qb5 Rb8 10. g5 f5 11. e3 a6 12. Qa4 b5 13. Qc2 {Domenche Redondo,F (1893)-Santamaría Quintana,I (1251) ICCF 2014 1-0 (43)}) (1... d6 2. h3 (2. Bg2 Nc6 (2... c6 3. h3 g6 4. d4 Bg7 5. c4 Nd7 6. Nf3 e5 7. Nc3 Ne7 8. dxe5 dxe5 9. Ne4 O-O 10. Qb3 Qb6 11. Qa3 c5 12. Be3 Qb4+ 13. Qxb4 cxb4 14. Nc5 {Kaytazki,L (1524)-Fortin,M (1659) ICCF 2012 1-0 (37)}) (2... e5 3. c4 Nc6 ( 3... c6 4. Qb3 Nf6 5. h3 Be7 6. e3 O-O 7. d4 Qc7 8. Nc3 Re8 9. d5 c5 10. Nb5 Qd8 11. Nf3 a6 12. Nc3 Qc7 13. Qc2 Nbd7 14. Ng5 g6 15. h4 {Fernandez,Q (1455) -Takahashi,Y (1532) ICCF 2019 1/2 (51)}) 4. e3 h6 5. h3 Nf6 6. Ne2 a6 {0-1 (6) Vtorykh,D-Jones,M ICCF 2019}) (2... Nf6 3. g5 Nh5 4. d4 c6 5. Nc3 d5 6. e4 g6 7. exd5 cxd5 8. Nxd5 Bg7 9. Ne2 e6 10. Ndc3 Qb6 11. O-O O-O 12. Be3 Qxb2 13. Rb1 Qa3 14. Bxb7 {Domenche Redondo,F (1763)-Lucena Cifré,R (1678) ICCF 2017 1-0 (33)}) 3. Bxc6+ (3. g5 e5 4. h4 Be6 5. b3 d5 6. c4 dxc4 7. Qc2 Bc5 8. Bxc6+ bxc6 9. bxc4 Qd4 10. Qc3 Qxf2+ 11. Kd1 Bd4 12. Qa5 Bxa1 13. Qxc7 Qb6 14. Qxb6 axb6 {Irlbacher,R (1802)-Phillips,P (1959) ICCF 2015 0-1 (29)}) 3... bxc6 4. h3 e5 5. c3 e4 6. Qa4 Bd7 7. Qxe4+ Qe7 8. Qxe7+ Nxe7 9. Nf3 Ng6 10. d4 d5 11. O-O Bd6 12. e3 O-O 13. Nh2 f5 {Irlbacher,R (1779)-Skrotzki,G (1780) ICCF 2018 0-1 (36)}) (2. c4 Bxg4 3. f3 Be6 4. e4 Nf6 5. Qa4+ Bd7 6. Qb4 b6 7. h4 c5 {0-1 (7) Vánová,J-Kosíková,A ICCF 2010}) (2. Bh3 e5 3. Nc3 Nc6 4. d3 Be7 5. Nf3 Nd4 6. Nd2 Nf6 7. f3 c6 8. b4 Nd5 9. Nde4 Nxc3 10. Qd2 Nxe4 11. fxe4 O-O 12. Rf1 d5 13. Ba3 a5 {Vánová,J-Pigosová,J ICCF 2010 0-1}) 2... e5 3. Bg2 Nc6 (3... h6 4. Nc3 Qd7 5. Nf3 Nc6 6. d4 exd4 7. Nxd4 Nxd4 8. Qxd4 Ne7 9. Bf4 Nc6 10. Qd5 f5 11. O-O-O fxg4 12. Qc4 gxh3 13. Rxh3 Nd8 14. Re3+ Be7 15. Nb5 {Domenche Redondo,F (1776)-Calvo Muro,R (1650) ICCF 2015 1-0}) 4. c4 g6 5. Nc3 Bg7 6. d3 f5 7. g5 Be6 8. Qa4 Nge7 9. Bd5 Qd7 10. e3 Nd8 11. Qxd7+ Kxd7 12. Bd2 Nxd5 13. cxd5 {Dodds,E-Kraszewski,D (2176) ICCF 2015 0-1 (40)}) (1... c5 2. Bg2 Nc6 3. c4 (3. e4 e6 4. d3 h5 5. g5 Nge7 6. h4 g6 7. Nc3 Bg7 8. Be3 Qb6 9. Na4 O-O 10. Nxb6 axb6 11. c3 d5 12. Ne2 Rd8 13. Qb3 Ra6 14. O-O-O Bd7 {Bau,E (2073) -Davidson,J (2093) ICCF 2010 0-1 (37)}) 3... d6 4. h3 h5 5. g5 e6 6. d3 Nge7 7. Nc3 Qb6 8. Nf3 Ng6 9. O-O Be7 10. a3 O-O 11. b4 cxb4 12. Be3 Qd8 13. axb4 { Komarica,B-Pirs,M ICCF 2006 0-1}) (1... g6 2. Bg2 Bg7 3. Nc3 (3. Nf3 e6 4. Nc3 d5 5. d4 c5 6. Bg5 Ne7 7. dxc5 Nbc6 8. Qd3 Qa5 9. O-O-O Bxc3 10. Qxc3 Qxc3 11. bxc3 h6 12. Bf6 Rg8 13. Nd4 Bd7 14. Nb5 Nc8 {Domenche Redondo,F (1598)-Lucena Cifré,R (1730) ICCF 2016 1-0}) 3... d6 4. g5 e5 5. d3 Ne7 6. Nf3 O-O 7. h4 Bg4 8. Nh2 Bh5 9. Bxb7 Nd7 10. Bxa8 Qxa8 11. Ne4 Nf5 12. Nf1 Nc5 13. f3 {Domenche Redondo,F (1598)-Suinaga,W (1647) ICCF 2016 1-0}) (1... e6 2. d4 (2. Bg2 d5 ( 2... Nf6 3. g5 Ng4 4. d4 h6 5. Nf3 Be7 6. h3 Nxf2 7. Kxf2 Nc6 8. d5 exd5 9. gxh6 gxh6 10. Qxd5 Nb4 11. Qd4 Rg8 12. Na3 b6 13. Be3 a5 14. Qe4 {Domenche Redondo,F (1800)-Zuil Rebollo,C ICCF 2015 1-0 (25)}) (2... h5 3. e4 hxg4 4. d4 Nc6 5. d5 Ne5 6. dxe6 dxe6 7. Qxd8+ Kxd8 8. Nc3 Bd7 9. Bf4 Ng6 10. Bg3 Bd6 11. O-O-O Nf6 12. Nge2 e5 13. Kb1 Ke7 14. Nd5+ {Kaytazki,L (1463)-Rheindt,S ICCF 2016 0-1}) 3. d3 c6 4. Nf3 Bd6 5. Nc3 Nf6 6. g5 Ng4 7. h3 Ne5 8. Nxe5 Bxe5 9. f4 Bxc3+ 10. bxc3 Qb6 11. e3 c5 12. e4 dxe4 13. Bxe4 Nc6 {Domenche Redondo,F (1789)-Lucena Cifré,R (1551) ICCF 2017 1-0}) (2. Nf3 d5 3. Bg2 h5 4. g5 c6 5. d4 Ne7 6. O-O Ng6 7. Nc3 a5 8. e4 Be7 9. Be3 b5 10. h4 Nd7 11. e5 b4 12. Ne2 c5 13. Re1 a4 {Domenche Redondo,F (1677)-Lopez Cacayan,C ICCF 2020 (30)}) 2... d5 (2... Bd6 3. Bd2 Qf6 4. c4 Qxd4 5. e3 Qxb2 6. Bc3 Bb4 7. Bxb4 Qxa1 8. Bc3 Qxa2 9. Ne2 Qxc4 10. Nd4 Qd5 11. Rg1 Nf6 12. g5 Ne4 13. Bg2 Nxc3 {0-1 (13) Vánová, J-Sebestová,J ICCF 2010}) 3. Nf3 g6 4. Nc3 Bg7 5. Bf4 Nd7 6. Nb5 e5 7. Nxe5 Nxe5 8. Bxe5 Bxe5 9. dxe5 Bxg4 10. Qxd5 Be6 11. Qxb7 Rb8 12. Nxc7+ Kf8 13. Qxa7 {Domenche Redondo,F (1731)-Maseras Rozas,G (1797) ICCF 2020 1-0}) (1... Nf6 2. g5 Nd5 (2... Nh5 3. e4 e5 4. Qxh5 Nc6 5. Bc4 g6 6. Qf3 Qe7 7. Qf6 Qxf6 8. gxf6 Bh6 9. Nc3 O-O 10. d3 Bxc1 11. Rxc1 Nd8 12. Nd5 Ne6 13. Ne7+ Kh8 14. h4 { Dijk,J (1714)-Fraser,J (1721) ICCF 2017 1-0}) 3. e4 Nf4 4. d4 Ng6 5. Nc3 d6 6. Nf3 Nc6 7. h4 e5 8. d5 Nb8 9. h5 Nf4 10. Bxf4 exf4 11. Rg1 Nd7 12. Qd2 a6 13. Qd1 {Domenche Redondo,F (1759)-Díaz García,C (1725) ICCF 2017 0-1 (40)}) (1... h5 2. g5 (2. gxh5 e5 3. d4 exd4 4. Nf3 d5 5. Bg5 Be7 6. Bxe7 Qxe7 7. Qxd4 Nf6 8. Nc3 c5 9. Qf4 Nc6 10. O-O-O Rxh5 11. Rg1 d4 12. Nb5 Kf8 13. e3 dxe3 { Binas,J (2197)-Schulenberg,H (2090) ICCF 2010 1-0 (35)}) 2... e5 3. d3 d5 4. Nc3 Nc6 5. Bg2 Nge7 6. Nf3 Ng6 7. a3 Be6 8. e3 Qd7 9. Qe2 O-O-O 10. Nb1 e4 11. dxe4 dxe4 12. Nfd2 Bg4 13. Qf1 {Monteiro,U (1903)-Joachimsthaler,K (2036) ICCF 2012 0-1 (39)}) (1... c6 2. Bg2 d5 3. h3 h6 4. c4 dxc4 5. Qa4 Be6 6. Nc3 b5 { 0-1 (6) Fernandez,Q (1415)-Pedajas,A ICCF 2016}) (1... d5 2. Bg2 (2. h3 e5 ( 2... h5 3. g5 (3. gxh5 Rxh5 4. d4 e5 5. e3 Nf6 6. dxe5 Rxe5 7. Nf3 Rh5 8. b3 Nc6 9. Bb2 Be6 10. Bg2 Be7 11. Nbd2 Qd7 12. Nd4 Nxd4 13. Bxd4 O-O-O 14. Bxf6 Bxf6 {Holmes,R-Daudish,J ICCF 2008 1/2 (28)}) 3... e5 (3... Nc6 4. d4 Bf5 5. Nf3 Nb4 6. Na3 Be4 7. Bg2 c6 8. c3 Bxf3 9. Bxf3 e6 10. cxb4 e5 11. dxe5 Ne7 12. O-O Qd7 13. Bg2 Nf5 14. e4 dxe4 15. Qxd7+ {Nicotera,A (1983)-Züger,A (1966) ICCF 2020 1-0}) 4. Nc3 (4. d4 exd4 5. Nf3 Nc6 6. Nxd4 Nge7 7. Nc3 Be6 8. Bg2 Nxd4 9. Qxd4 Nf5 10. Qd3 c6 11. O-O Qd6 12. Rd1 O-O-O 13. e4 dxe4 14. Qxe4 Qxd1+ 15. Nxd1 Rxd1+ {Domenche Redondo,F (1715)-Huguet Reina,C (1660) ICCF 2015 0-1}) 4... Nc6 (4... Bc5 5. e3 Bb6 6. d4 Ne7 7. dxe5 Be6 8. Na4 Nd7 9. Nxb6 cxb6 10. f4 Qc8 11. Ne2 Nc5 12. Nd4 Nf5 13. Bb5+ Nd7 14. g6 Ke7 15. Nxf5+ Bxf5 16. Qxd5 {Nicotera,A (1983)-Züger,A (1966) ICCF 2020 1-0 (27)}) 5. Bg2 Nge7 6. e3 Be6 7. Nf3 e4 8. Nh4 Nf5 9. Nxf5 Qxg5 10. Nxg7+ Qxg7 11. Rg1 Bxh3 12. Bxh3 Qxg1+ 13. Ke2 Qh2 14. Qf1 {Domenche Redondo,F (1598)-Alascio López,J ICCF 2016 0-1 (26)}) (2... b6 3. Bg2 Bb7 4. Nc3 e6 5. Nf3 h6 6. d4 Bb4 7. Qd3 Nc6 8. Be3 Qe7 9. a3 Bd6 10. O-O-O Nf6 11. Nb5 O-O-O 12. Kb1 g5 13. Nxd6+ Qxd6 14. Ne5 {Domenche Redondo,F (1776)-Reyes Cortés,R (1537) ICCF 2015 1-0 (31)}) ( 2... c5 3. Nf3 Nc6 4. Nc3 Nf6 5. d4 cxd4 6. Nxd4 e5 7. Nxc6 bxc6 8. Bg2 Bb4 9. Bd2 O-O 10. g5 Nh5 11. O-O Bxc3 12. bxc3 Nf4 13. Bxf4 exf4 14. h4 {Domenche Redondo,F (1764)-Lucena Cifré,R (1549) ICCF 2018 1/2}) (2... c6 3. Nf3 Nd7 4. d4 Ngf6 5. Be3 h5 6. g5 Ne4 7. Nbd2 Qa5 8. c3 Nd6 9. g6 fxg6 10. Qc2 Nc4 11. Qxg6+ Kd8 12. Nxc4 dxc4 13. Ng5 b5 14. Ne6# {Domenche Redondo,F (1712) -Santamaría Quintana,I (1133) ICCF 2019 1-0}) (2... e6 3. Nf3 Nf6 4. Bg2 c5 5. g5 Ne4 6. d3 Nd6 7. e4 d4 8. Bf4 Be7 9. Nbd2 Nc6 10. Qe2 b5 11. O-O O-O 12. a4 Ba6 13. h4 Nb4 14. c3 {Domenche Redondo,F (1598)-Lucena Cifré,R (1730) ICCF 2016 1-0}) (2... g6 3. Nf3 Bg7 4. Nc3 c6 5. d4 Na6 6. Bg2 h6 7. Ne5 Nf6 8. Bf4 Nc7 9. Qd2 Ne6 10. Bg3 Qb6 11. O-O Qxd4 12. Qxd4 Nxd4 13. Rac1 O-O 14. e3 { Domenche Redondo,F (1759)-Arias Castañedo,J ICCF 2017 1/2 (69)}) 3. Bg2 (3. d3 Nc6 (3... Bd6 4. Nc3 (4. Nf3 Ne7 5. Bg2 O-O 6. c4 c6 7. Nc3 Nd7 8. O-O b6 9. Bg5 Bb7 10. Nh4 f6 11. Bd2 Kh8 12. Nf5 Nxf5 13. gxf5 d4 14. Ne4 Qe7 15. a3 a5 { Domenche Redondo,F (1735)-Mataix Arbona,C (1894) ICCF 2020 0-1 (38)}) 4... c6 5. Bg2 Ne7 6. Nf3 O-O 7. O-O Re8 (7... f5 8. g5 Ng6 9. h4 e4 10. Nd4 Nxh4 11. f4 exf3 12. Nxf3 Nxf3+ 13. exf3 f4 14. g6 h6 15. d4 Qg5 16. Ne2 Bf5 17. Bd2 Nd7 18. Qc1 Bxg6 19. a3 {Domenche Redondo,F (1627)-Perrin,R (2023) ICCF 2016 0-1 (33)}) 8. Bd2 Nd7 9. e4 d4 10. Ne2 Nc5 11. c3 dxc3 12. Bxc3 Ng6 13. Qc2 h5 14. g5 Ne6 15. Qd2 {Domenche Redondo,F (1717)-Piñeiro Kremer,P (1907) ICCF 2017 0-1 (34)}) (3... h5 4. g5 Ne7 5. Nf3 Ng6 6. Nc3 Be6 7. a3 Nc6 8. e3 Be7 9. b4 a5 10. bxa5 Rxa5 11. a4 Qd7 12. Bb2 Bb4 13. Nd2 d4 14. Nb5 Nce7 15. exd4 { Monteiro,U (1915)-Pareja López,F (1935) ICCF 2013 0-1 (38)}) 4. Bg2 (4. a3 Be6 (4... h5 5. g5 Nge7 6. Bg2 Be6 7. Nc3 Qd7 8. b4 Ng6 9. e4 Nh4 10. Rh2 Nxg2+ 11. Rxg2 dxe4 12. Nxe4 Bxh3 13. Nxh3 Qxh3 14. Kf1 O-O-O 15. Be3 f5 16. gxf6 { Irlbacher,R (1848)-Dlouhý,R (2275) ICCF 2017 0-1}) 5. Nf3 h5 6. g5 Nge7 7. e3 Ng6 8. b4 Bd6 9. Nbd2 a5 10. b5 Nce7 11. c4 c6 12. Rb1 O-O 13. Be2 cxb5 14. Rxb5 Qc7 15. Qb3 Rfb8 {Ohtake,S (2385)-Cruz,H (2357) ICCF 2014 0-1 (51)}) (4. Nc3 h5 (4... Be6 5. Nf3 f6 6. a3 Qd7 7. Bg2 O-O-O 8. b4 h5 {0-1 (8) Lilleeng,A (2148)-Learte Pastor,T (2282) ICCF 2012}) 5. g5 Nge7 6. Nf3 Be6 7. Bg2 (7. d4 Nf5 8. Nxe5 Nxe5 9. dxe5 d4 10. e4 dxc3 11. Qxd8+ Rxd8 12. exf5 Bb4 13. b3 Bxf5 14. a3 Bc5 15. Ra2 O-O 16. Be2 h4 17. Bg4 Rd5 18. f4 Bxg4 {Dijk,J-Riquelme Pereira,C ICCF 2016 0-1 (37)}) 7... Qd7 8. d4 {1-0 (8) Domenche Redondo,F (1952)-Roig García,J (1750) ICCF 2016} Ng6 9. Nxe5 Ncxe5 10. dxe5 d4 11. Ne4 Nh4 12. Bf3 Bxh3 13. Qd3 Nxf3+ 14. Qxf3 Bg4 15. Qd3 O-O-O 16. a3 h4 17. f3 Bf5 18. Bf4 Qe6 19. Qb3 Qg6 20. O-O-O {Dijk,J-Cerniauskas,M (1755) ICCF 2016 1-0 (52)}) 4... Be6 5. c3 (5. Nf3 h6 (5... h5 6. g5 Qd6 7. Nc3 O-O-O 8. Bd2 Nge7 9. Nb5 Qd7 10. Nxa7+ Nxa7 11. Nxe5 Qb5 12. b4 Nf5 13. a4 Qb6 14. Rb1 Nh4 15. Kf1 Qd4 16. f4 Qb6 17. a5 {Domenche Redondo,F (1893)-Roig García,J (1783) ICCF 2014 0-1}) 6. Nc3 f6 7. e4 d4 8. Ne2 Bb4+ 9. c3 dxc3 10. bxc3 Ba5 11. Be3 Nge7 12. Qc2 O-O 13. d4 exd4 14. Nfxd4 Bf7 15. Rd1 Qe8 16. O-O Ne5 {Monteiro,U (1933)-Schellens,M (1900) ICCF 2013 1-0 (44)}) 5... Bd6 6. Qb3 a6 7. Nd2 Nge7 8. Nf1 O-O 9. Bg5 h6 10. Bxe7 Nxe7 11. a4 c6 12. Rb1 Ng6 13. Qc2 f5 14. gxf5 Bxf5 {Monteiro,U (1917)-Camps,J (2015) ICCF 2014 0-1 (30)}) (3. Nf3 Nc6 (3... e4 4. Nd4 h5 5. gxh5 c5 6. Nb3 Rxh5 7. d3 Qh4 {0-1 (7) Lilleeng,A (2148) -Holroyd,K (2312) ICCF 2012}) 4. d3 Bd6 5. Nc3 Nge7 6. Bg2 O-O 7. O-O a6 8. Bd2 Nd4 9. e4 Nxf3+ 10. Bxf3 d4 11. Ne2 Be6 12. Bg2 Ng6 13. Ng3 c5 14. Nf5 Bc7 { Domenche Redondo,F (1884)-Senovilla Rodríguez,R (1921) ICCF 2016 0-1 (27)}) (3. Nc3 d4 4. Ne4 Nf6 5. Bg2 h5 6. gxh5 Nxe4 7. Bxe4 c6 8. d3 Na6 {0-1 (8) Lilleeng,A (2148)-Ugrinovsky,A (2152) ICCF 2012}) (3. d4 exd4 4. Qxd4 c5 5. Qf4 Nc6 6. Bg2 Be6 7. c4 d4 8. Bxc6+ bxc6 9. Qe4 Qd7 10. Nd2 Bd6 11. Ngf3 Nf6 12. Qd3 h5 13. Rg1 hxg4 14. hxg4 O-O-O {Dijk,J (1797)-Lonnee,G (2052) ICCF 2019 0-1 (50)}) 3... Nc6 (3... Be6 4. d4 exd4 5. Qxd4 Nc6 6. Qa4 Bc5 7. Nf3 Nge7 8. c4 dxc4 9. Ng5 Qd7 10. Nc3 O-O-O 11. O-O h5 12. Rd1 Nd4 13. Qxd7+ Rxd7 14. Nxe6 fxe6 15. Bg5 {Nicotera,A (1983)-Lagergren,H (1916) ICCF 2020 1/2}) (3... h5 4. f3 hxg4 5. fxg4 Qh4+ 6. Kf1 Qf6+ 7. Nf3 e4 8. g5 Qf5 9. Kg1 exf3 10. Bxf3 Qxg5+ 11. Kf2 Rxh3 12. Bg2 Qg3+ 13. Kf1 Rxh1+ 14. Bxh1 Bh3+ 15. Bg2 {Latta, D-Caliguire,J (2097) ICCF 2014 0-1}) 4. Nc3 (4. c4 d4 (4... Nge7 5. e3 dxc4 6. Nc3 Nb4 7. Qa4+ Nec6 8. a3 Nd3+ 9. Kf1 Be6 10. Bxc6+ bxc6 11. Qxc6+ Ke7 12. Qg2 Rb8 13. Nge2 Ke8 14. Ng3 Be7 15. Nge2 h5 16. Qc6+ {Kaytazki,L (1949) -Stoelwinder,W ICCF 2008 0-1 (25)}) 5. a3 (5. d3 h5 6. g5 Bb4+ 7. Kf1 Nge7 8. h4 Ng6 9. Bxc6+ bxc6 10. Qa4 {1-0 (10) Laine,J (1898)-Trukss,A ICCF 2005}) 5... h5 6. d3 hxg4 7. hxg4 Rxh1 8. Bxh1 Bxg4 9. Qa4 Bd7 10. Bxc6 Bxc6 11. Qd1 Qh4 12. Kd2 Qxf2 13. b3 e4 14. Kc2 exd3+ 15. Kxd3 Qf5+ {Fernandez,Q (1455) -Bourgault,J (1850) ICCF 2019 0-1}) (4. e4 Be6 5. d3 dxe4 6. Bxe4 Qd7 7. Nc3 Nf6 8. f4 Bb4 9. Bd2 h5 10. g5 Nxe4 11. Nxe4 O-O-O 12. Bxb4 Nxb4 13. Nc5 Qc6 14. Rh2 Qxc5 15. Nf3 e4 {Kaytazki,L (1463)-Zhekov,Z ICCF 2016 0-1}) 4... Be6 ( 4... Nge7 5. b3 (5. d3 h5 6. gxh5 Be6 7. Bf3 Qd7 8. e4 O-O-O 9. exd5 Nxd5 10. Bxd5 Bxd5 11. Nxd5 Qxd5 12. Qf3 Qd7 13. Ne2 Nb4 14. Kd1 f5 15. Ng3 Kb8 16. Nxf5 e4 {Kaytazki,L (1506)-Davidov,D (2295) ICCF 2020 0-1 (63)}) 5... h5 6. f3 f5 7. g5 Ng6 8. h4 Nxh4 9. Rxh4 Qxg5 10. Rh2 Qg3+ 11. Kf1 Qxh2 12. Qe1 h4 13. Nxd5 Bd6 14. d3 f4 15. e4 Bc5 16. Nxc7+ {Marpaung,N-Nento,R (2037) ICCF 2019 0-1}) 5. d3 Bb4 (5... h5 6. gxh5 Nf6 7. Nf3 d4 8. Ne4 Nxe4 9. dxe4 Rxh5 10. a3 Qd7 11. Qd3 f6 12. Bd2 Qf7 13. Nh2 O-O-O 14. Nf1 Kb8 15. h4 g6 16. Ng3 Rh7 17. Rh2 {Polchowski,T-Poelvoorde,H ICCF 2020 0-1 (31)}) 6. a3 Bc5 7. Nf3 f6 8. Na4 Bd6 9. c4 dxc4 10. dxc4 Bxc4 11. Qc2 Be6 12. Be3 Nge7 13. Nd2 O-O {Polchowski, T-Schulz,P (1501) ICCF 2020 1-0 (27)}) (2. g5 e5 (2... e6 3. d4 Be7 4. Bg2 (4. h4 c5 5. c4 dxc4 6. Qa4+ Nc6 7. dxc5 Bxc5 8. Qxc4 Bb6 9. Rh3 Qd4 10. Qxd4 Bxd4 11. e3 Bb6 12. Bb5 Bd7 13. Nf3 Nb4 14. Bxd7+ Kxd7 15. Na3 Nd3+ {Irlbacher,R (1779)-Winkler,E (1699) ICCF 2018 1-0 (34)}) 4... Bxg5 5. e3 Nc6 6. h4 Bf6 7. c4 dxc4 8. Bxc6+ bxc6 9. Qa4 Qd5 10. f3 Qb5 11. Nc3 Qxa4 12. Nxa4 Ba6 13. Nc5 Bc8 14. e4 {Irlbacher,R (1837)-Winkler,E (1737) ICCF 2017 1-0 (33)}) (2... h6 3. d3 (3. d4 hxg5 4. Bxg5 Nf6 5. Bxf6 exf6 6. Nf3 Nc6 7. c3 Bf5 8. Nh4 Rxh4 9. Nd2 Qd7 10. Qb3 O-O-O 11. O-O-O Na5 12. Qc2 Bxc2 13. Kxc2 Qf5+ 14. Kc1 Qxf2 { Chugg,M (1318)-Sartori,D (1918) ICCF 2018 0-1}) (3. h4 hxg5 4. Nf3 g4 5. Ne5 d4 6. Bg2 Rh5 7. Nc4 Nc6 8. Bxc6+ bxc6 9. d3 e5 10. Nbd2 g5 11. Ne4 gxh4 12. c3 Qd5 13. Rh2 f5 14. Ng3 hxg3 {Günschmann,M (1762)-Gorshkov,E ICCF 2006 0-1}) 3... Nc6 4. Bh3 Bxh3 5. Nxh3 e5 6. g6 fxg6 7. e4 dxe4 8. dxe4 Qxd1+ 9. Kxd1 O-O-O+ 10. Bd2 Nf6 11. f3 Bc5 12. c3 Rd3 13. Kc2 Rxf3 14. b4 {Irlbacher,R (1848)-Gebhardt,U (2126) ICCF 2017 0-1}) (2... c6 3. d4 Bf5 4. Nc3 Nd7 5. h4 e5 6. dxe5 Nxe5 7. Qd4 f6 8. Bf4 Qb6 9. Bxe5 Bc5 10. Qf4 fxe5 11. Qxf5 Ne7 12. Qxe5 Bd4 13. Na4 Qa5+ 14. b4 {Domenche Redondo,F (1884)-Baigorri Navarro,F (2020) ICCF 2016 0-1 (34)}) (2... Bd7 3. d4 e6 4. Bg2 f6 5. h4 fxg5 6. Bxg5 Be7 7. Bxe7 Qxe7 8. c4 dxc4 9. Nc3 h5 10. Bxb7 {1-0 (10) Irlbacher,R (1837)-Biddle, R (1738) ICCF 2017}) (2... g6 3. d4 Bg7 4. c4 dxc4 5. Qa4+ c6 6. Qxc4 e6 7. Nf3 Nd7 8. Bf4 Ne7 9. Be5 Nxe5 10. dxe5 Bxe5 11. Nxe5 Qa5+ 12. Nc3 Qxe5 13. f4 Qa5 14. O-O-O {Irlbacher,R (1774)-Burton,S (1651) ICCF 2018 1/2 (31)}) 3. h4 (3. d4 exd4 4. Bg2 Nc6 5. Nf3 Bb4+ 6. Kf1 h6 7. c3 dxc3 8. Nxc3 Be6 9. Bf4 hxg5 10. Nxg5 Nf6 11. Rc1 Bd6 12. Bg3 Ng4 13. Nxd5 Qxg5 14. Nxc7+ Bxc7 {Domenche Redondo,F (1884)-Vicioso Sánchez,M (1951) ICCF 2016 0-1 (26)}) (3. Bh3 Bxh3 4. Nxh3 Nc6 5. c3 Qd7 6. Ng1 e4 7. e3 Ne5 8. a4 Nd3+ 9. Kf1 h6 10. gxh6 Rxh6 11. Ke2 Qg4+ {0-1 (11) Irlbacher,R (1848)-Piqueras Jiménez,M (2098) ICCF 2017}) 3... Nc6 (3... h6 4. d4 e4 5. Bg2 Bf5 6. c3 Qd7 7. Bh3 hxg5 8. Bxf5 Qxf5 9. Qb3 b6 10. Bxg5 Be7 11. Bxe7 Nxe7 12. Na3 Nbc6 13. Qa4 O-O-O 14. Nc2 Qf6 15. h5 { Günschmann,M (1762)-Bartsch,A (2236) ICCF 2006 0-1 (31)}) 4. Nc3 (4. Bg2 Be6 ( 4... Nge7 5. Bh3 Bxh3 6. Nxh3 Qd7 7. e3 O-O-O 8. f3 h6 9. Nf2 hxg5 10. hxg5 Rxh1+ 11. Nxh1 Nf5 12. Qe2 Ncd4 13. exd4 Nxd4 14. Qd3 Qh3 15. Nf2 Qg2 16. c3 { Kaytazki,L (1418)-Kotzev,M ICCF 2019 0-1}) 5. c3 Bd6 6. d3 Nge7 7. a4 h5 8. a5 a6 9. Qb3 Rb8 10. Nf3 O-O 11. Nbd2 e4 12. Nd4 exd3 13. Nxe6 fxe6 14. exd3 Ne5 15. Qc2 N7g6 {Kazakov,S-Ponomarev,N ICCF 2015 0-1 (28)}) 4... h6 5. d3 hxg5 6. Bxg5 f6 7. Bd2 Bg4 8. Bg2 Nge7 9. Nb5 Qd7 10. c4 dxc4 11. dxc4 a6 12. Nc3 O-O-O 13. Be3 Qe8 {Günschmann,M (1762)-Shablinsky,M (2410) ICCF 2006 0-1 (31)}) (2. e3 e5 (2... Nc6 3. d4 e5 4. Bb5 exd4 5. exd4 Qe7+ 6. Kf1 Be6 7. c3 Qd7 8. h3 h5 9. g5 Bd6 10. Qf3 Nge7 11. Ne2 Bf5 12. Bd3 O-O-O 13. Bxf5 Nxf5 14. Qxd5 { Dijk,J (1724)-Bieringa,R ICCF 2018 0-1 (26)}) (2... c5 3. Bg2 Nc6 4. Nc3 d4 5. Ne4 Nf6 6. exd4 cxd4 7. h3 d3 8. cxd3 Qxd3 9. Qa4 Nd7 10. Ne2 Nb6 11. Qb3 Qxb3 12. axb3 h5 13. g5 Nb4 14. O-O {García Rosales,J (1962)-Yüzak,B (1930) ICCF 2018 1/2 (34)}) 3. Nc3 (3. d4 e4 4. Nc3 c6 5. b4 Bxb4 6. a3 Bxc3+ 7. Bd2 Bxa1 8. Qxa1 Bxg4 9. f4 Qh4# {0-1 (9) Zerbinato,R-Feruglio,R ICCF 2014}) 3... Be6 ( 3... h6 4. d4 e4 5. Nh3 c6 6. Rg1 Bd6 7. Bd2 Qh4 8. Nf4 Qxh2 9. Rg3 Qh4 10. Qe2 Nf6 11. Bh3 h5 12. g5 Bxh3 13. gxf6 Bg4 14. fxg7 Rg8 15. Qf1 {Domenche Redondo, F (1731)-Martínez Puigrós,R ICCF 2020 0-1}) 4. Bg2 c6 5. d4 e4 6. Nge2 Bxg4 7. Qd2 Bd6 8. h3 Be6 9. Nf4 Qe7 10. O-O Nd7 11. Nxe6 Qxe6 12. f3 f5 13. fxe4 fxe4 {Domenche Redondo,F (1717)-Schutte,F (1759) ICCF 2017 1-0 (32)}) (2. Nf3 Bxg4 3. d4 (3. Nd4 e5 4. Nf5 Bxf5 5. b4 Bxb4 6. c3 Bc5 7. d4 exd4 8. cxd4 Bb4+ 9. Bd2 Nc6 10. Bxb4 Nxb4 11. a3 Nc2+ 12. Kd2 Qg5+ 13. Kc3 c5 14. dxc5 Rc8 { Spiliopoulos,V-Docekalová,A ICCF 2016 0-1}) (3. Ne5 Bf5 4. Nc3 e6 5. Bg2 Bd6 6. d4 Nf6 7. O-O Nbd7 8. Bf4 Qe7 9. e3 c6 10. a4 O-O-O 11. a5 a6 12. Na4 Bc7 13. Nb6+ Nxb6 14. axb6 Bxb6 {Domenche Redondo,F (1598)-de Sanjur,M ICCF 2016 0-1 (43)}) (3. h3 Bxf3 4. exf3 Nh6 5. Bb5+ c6 6. Be2 Nd7 {0-1 (6) Spiliopoulos, V-Theis,B (1714) ICCF 2016}) 3... Bxf3 4. exf3 g6 5. Bf4 Bg7 6. Nc3 a6 7. Qd2 e6 8. O-O-O Nc6 9. Bg5 Nge7 10. Ne2 O-O 11. Kb1 Qd7 12. c3 Nf5 13. Bh3 b5 { Domenche Redondo,F (1717)-Reyes Cortés,R (1669) ICCF 2017 1-0 (35)}) (2. c4 dxc4 3. Qa4+ Qd7 4. Qxc4 e6 5. Nc3 Nc6 6. Nb5 a6 7. Nc3 Qd4 8. e3 Qxc4 9. Bxc4 Ne5 10. Be2 Bb4 11. f4 Nc6 12. Ne4 Be7 13. Nf3 Nf6 {Irlbacher,R (1808)-Åsten,E (1790) ICCF 2016 1/2}) (2. d4 Bxg4 3. Bf4 e6 4. Nf3 Bxf3 5. exf3 Nc6 6. Be5 Nxe5 7. dxe5 Qg5 8. c3 Qxe5+ 9. Be2 O-O-O 10. a3 d4 11. cxd4 Rxd4 12. Qb3 Ne7 13. Nd2 Nd5 {Saitou,T-Saitou,A (2155) ICCF 2011 0-1}) 2... Bxg4 (2... c6 3. h3 (3. g5 e5 (3... h6 4. h4 (4. d4 hxg5 5. Bxg5 Qb6 6. b3 (6. Bc1 Nf6 7. b3 Bf5 8. e3 c5 9. Nc3 cxd4 10. Na4 Qc7 11. Bd2 Bxc2 12. Rc1 d3 13. Qf3 Ne4 14. Qf4 e5 15. Rxc2 dxc2 {0-1 (15) Irlbacher,R (1848)-Neelmeier,S (1716) ICCF 2017}) 6... Bf5 7. Nc3 Na6 8. e4 dxe4 9. Bxe4 Bxe4 10. Nxe4 c5 11. dxc5 Nxc5 12. Be3 Qb4+ 13. Nd2 O-O-O 14. Bxc5 Qxc5 15. Qg4+ Kb8 {Irlbacher,R (1795)-Bravo González,R (1926) ICCF 2017 0-1}) 4... hxg5 5. hxg5 Rxh1 6. Bxh1 Qd6 (6... e5 7. d3 Be6 8. Nf3 Bd6 9. c3 Na6 10. Be3 Ne7 11. Nbd2 Nf5 12. Qb3 Qe7 13. d4 e4 14. Ne5 Bxe5 15. dxe5 d4 16. c4 Nc5 17. Qc2 dxe3 18. Nxe4 {Bau,E (2047)-Wimmer,R (2029) ICCF 2010 0-1}) 7. Nf3 Bg4 8. d4 g6 9. Be3 Qb4+ 10. Nbd2 Qxb2 11. Qb1 Qc3 12. a3 b5 13. Ra2 Bxf3 14. Bxf3 Bg7 15. Qb4 {Galanti,S-Bobel,P (2182) ICCF 2006 0-1 (45)}) 4. h4 h6 (4... Bc5 5. e3 Ne7 6. d4 exd4 7. exd4 Bd6 8. Be3 Qb6 9. Qc1 Nf5 10. Nc3 Na6 11. Nge2 Be6 12. h5 O-O-O 13. a4 Nb4 14. a5 Qc7 15. O-O h6 16. g6 {Smith,J-Caliguire,J (2085) ICCF 2012 0-1}) (4... Bd6 5. e4 dxe4 6. Nc3 f5 7. d3 exd3 8. Qxd3 Na6 9. Be3 Nb4 10. Qe2 Ne7 11. O-O-O Be6 12. Bf4 Ng6 13. Bg3 f4 14. h5 fxg3 15. hxg6 Qxg5+ 16. Kb1 {Domenche Redondo,F (1735)-Benages Mabres,V (1644) ICCF 2020 1/2 (26)}) (4... Ne7 5. d3 h6 6. Nc3 hxg5 7. hxg5 Rxh1 8. Bxh1 Ng6 9. Bd2 Be6 10. Qc1 Na6 11. f4 Qb6 12. Kf1 exf4 13. Na4 Qc7 14. c4 dxc4 15. dxc4 O-O-O 16. Bg2 {Kaytazki,L (1440)-Nenneman,D (2065) ICCF 2017 0-1 (42)}) 5. d4 hxg5 6. Bxg5 (6. hxg5 Rxh1 7. Bxh1 e4 8. c4 Be7 9. f4 Be6 10. Nc3 Qd7 11. Bd2 b5 12. cxd5 cxd5 13. e3 Nc6 14. Nxb5 f6 15. Bg2 Rb8 16. Qa4 fxg5 17. fxg5 Bg4 {Polchowski,T-Bester,A ICCF 2020 0-1 (40)}) 6... Qb6 7. b3 ( 7. dxe5 Qxb2 8. Nd2 Qxe5 9. c4 Ne7 10. Ngf3 Qd6 11. Ne4 Qc7 12. cxd5 Nxd5 13. Rc1 Na6 14. Qd4 Be6 15. O-O f6 16. Nxf6+ Nxf6 17. Qd3 Bc5 18. Qg6+ Qf7 { Kaytazki,L (1425)-Deforel,J (1915) ICCF 2018 0-1 (47)}) 7... Qxd4 8. Qxd4 exd4 9. c3 dxc3 10. Nxc3 Na6 11. Bh3 Bb4 12. Bd2 Bxh3 13. Rxh3 Nf6 14. e3 Nc5 { Fernandez,Q (1455)-Larsen-Barr,D ICCF 2019 0-1 (32)}) (3. c4 dxc4 4. Na3 (4. Nc3 Bxg4 5. Nb5 cxb5 6. Bxb7 Nd7 7. Bxa8 Qxa8 {0-1 (7) Fernandez,Q (1340) -Lockett,J ICCF 2019}) (4. b3 Bxg4 5. bxc4 Qd4 6. Nc3 Qxc4 7. Rb1 Bc8 8. Qc2 g6 9. d3 Qg4 10. Bh3 Qh4 11. Bxc8 Nd7 12. Bxd7+ Kxd7 13. Rxb7+ Kc8 14. Rb2 Bg7 15. Nb5 {1-0 (15) Irlbacher,R (1774)-Aannevik,B (1319) ICCF 2018}) (4. Qc2 Bxg4 5. Qxc4 Nf6 6. d3 e5 7. Bg5 Nbd7 8. Bxf6 Nxf6 9. h3 Be6 10. Qc3 Qb6 11. a3 Nd5 12. Bxd5 cxd5 13. Nf3 Rc8 14. Qd2 Bc5 15. e3 d4 {Fernandez,Q (1455)-Yanushkevich,E ICCF 2019 0-1 (25)}) (4. g5 e5 5. h4 Bc5 6. b3 Qd4 7. Nc3 Qxf2# {0-1 (7) Galanti,S-Yépez Gutiérrez,J (2262) ICCF 2006}) 4... Bxg4 5. Nxc4 Nd7 6. Nf3 e6 7. Nfe5 Nxe5 8. Nxe5 Bf5 9. e4 Bg6 10. Nxg6 hxg6 11. Qb3 Qc7 12. d4 Nf6 13. Be3 Be7 14. h3 O-O {Michas,J (1756)-Roberts,D (1710) ICCF 2017 1-0 (32)}) (3. e3 e5 4. h3 (4. d4 e4 5. c4 Qg5 6. h3 Bb4+ 7. Bd2 Bxd2+ 8. Nxd2 Ne7 9. Qb3 f5 10. Ne2 Nd7 11. cxd5 cxd5 12. Nf4 Nb6 13. a4 fxg4 14. hxg4 Bxg4 15. a5 Nd7 {Dijk,J (1547)-Fernandez Gonzales,G (1702) ICCF 2017 1-0 (30)}) 4... Bd6 5. d4 e4 6. c4 Na6 7. Nc3 Nb4 8. Bf1 h5 9. gxh5 Bf5 10. a3 Nd3+ 11. Bxd3 exd3 12. cxd5 cxd5 13. Nxd5 Be4 14. Qa4+ Kf8 {Vtorykh,D-Vercauteren,N (1767) ICCF 2019 0-1}) (3. e4 Nf6 4. g5 Nxe4 5. Bxe4 dxe4 6. Nc3 Bf5 7. Qe2 h6 8. Nxe4 hxg5 9. d3 f6 10. Be3 Qd5 11. c4 Qd7 12. O-O-O Na6 13. Nc5 Nxc5 14. Bxc5 Rd8 {Kaytazki,L (1446) -Marbourg,D (2096) ICCF 2017 0-1}) 3... e5 (3... Nd7 4. d4 Nb6 (4... e6 5. g5 Ne7 6. e4 dxe4 7. Bxe4 Nb6 8. Nf3 Ned5 9. Bxd5 Nxd5 10. c4 Bb4+ 11. Kf1 Nc7 12. Ne5 Bd6 13. Bf4 Bxe5 14. Bxe5 O-O 15. h4 f6 16. gxf6 {Irlbacher,R (1808) -Winkler,E (1795) ICCF 2016 1-0 (35)}) 5. Nc3 Bd7 6. Bf4 e6 7. Nf3 Ne7 8. Ne5 f6 9. Nd3 Ng6 10. Bg3 Be7 11. Nc5 Bc8 12. Qd3 e5 13. O-O-O e4 14. Qd2 O-O 15. b3 {Strelecky,R (1623)-Berger,B ICCF 2016 1/2 (69)}) (3... h5 4. g5 (4. c4 hxg4 5. hxg4 Rxh1 6. Bxh1 dxc4 7. e3 e5 8. Qf3 Na6 9. Nc3 Nb4 10. Kd1 Qh4 11. Qg3 Qxh1 12. a3 Nd3 13. Nce2 Bxg4 14. Kc2 Qe4 15. Kc3 Nxf2 {Fernandez,Q (1455) -King,T ICCF 2019 0-1}) (4. gxh5 e5 5. e4 dxe4 6. Bxe4 Be6 7. d3 Be7 8. Nf3 f5 9. Bxf5 Bxf5 10. Nxe5 Qa5+ 11. Nc3 Qxe5+ 12. Be3 Nf6 13. Qd2 Nd5 14. O-O-O Nxc3 15. bxc3 Ba3+ {Fernandez,Q (1455)-Haase,F ICCF 2019 0-1}) 4... Bf5 (4... e5 5. h4 Bc5 6. e3 Ne7 7. d4 Bd6 8. e4 Be6 9. f4 dxe4 10. fxe5 Bc7 11. Bxe4 Nd7 12. Bf4 Ba5+ 13. c3 Qc8 14. b4 Bc7 15. Bf3 Nb6 16. Bxh5 {Fernandez,Q (1340)-Davis, J (1244) ICCF 2019 0-1}) 5. d4 e6 6. Nf3 h4 7. c4 Ne7 8. Nc3 Ng6 9. O-O Nd7 10. Re1 Bb4 11. Qb3 a5 12. a3 Bxc3 13. Qxc3 Be4 14. a4 O-O 15. b3 {Ohtake,S (2385) -Demian,V (2353) ICCF 2014 1/2 (70)}) 4. d4 (4. d3 Bd6 (4... Be6 5. Nc3 Bb4 6. Bd2 Ne7 7. Nf3 Nd7 8. e3 Qc7 9. a3 Ba5 10. Ng5 Qd6 11. Nxe6 Qxe6 12. O-O Bc7 13. e4 d4 14. Ne2 O-O 15. c3 c5 16. c4 {Santamaría Quintana,I (1251)-Lucena Cifré,R (1691) ICCF 2014 0-1 (49)}) 5. Nf3 (5. c4 Ne7 6. Nc3 Be6 7. Nf3 h6 8. O-O Nd7 9. cxd5 cxd5 10. Nb5 Qb6 11. Qa4 a6 12. Nxd6+ Qxd6 13. b3 O-O 14. Ba3 Nc5 15. Nxe5 Qxe5 16. Bxc5 Rfe8 {Polchowski,T-Vanícek,J (1530) ICCF 2020 1-0}) 5... Nf6 (5... Be6 6. Bg5 Nf6 7. e4 Nbd7 8. Nbd2 Qc7 9. c3 h5 10. Nh2 hxg4 11. Nxg4 Qb6 12. b4 Be7 13. Nxf6+ Nxf6 14. a3 a5 15. Bxf6 Bxf6 16. exd5 cxd5 17. O-O {Odermatt,C-Turmo,S ICCF 2013 0-1}) 6. Nc3 (6. g5 Nh5 7. e4 dxe4 8. dxe4 O-O 9. Nxe5 Ng3 10. fxg3 Bxe5 11. Qf3 Qb6 12. Nc3 Na6 13. a3 Be6 14. Bf1 f5 15. gxf6 Rxf6 16. Qg2 Raf8 17. Bxa6 Rf2 {Laine,J (1843)-Lagergren,H (1949) ICCF 2006 0-1}) 6... O-O 7. O-O Qe7 8. Bg5 Nbd7 9. e4 h6 10. exd5 hxg5 11. dxc6 bxc6 12. Nxg5 Nd5 13. Nxd5 cxd5 14. Bxd5 Rb8 15. Ne4 Nf6 {Potter,D-Nielsen,P (1778) ICCF 2008 0-1}) (4. e4 h5 (4... dxe4 5. Nc3 Nf6 6. Nge2 Be7 7. b3 Be6 8. Bb2 Nbd7 9. Ng3 Qc7 10. Ncxe4 Nd5 11. Qf3 a5 12. O-O O-O 13. a4 Nb4 14. Rac1 g6 15. Qe3 f5 16. gxf5 {Lilleeng,A (2148)-Glørstad,T (2380) ICCF 2012 1/2 (28)}) 5. d3 (5. g5 Qxg5 6. Bf3 d4 7. d3 Qd8 8. c3 c5 9. Bg2 Nc6 10. Nf3 Nge7 11. Na3 Ng6 12. Qb3 Be7 13. Bd2 O-O 14. Bf1 Rb8 15. Rg1 Be6 16. Qc2 b5 {Kaytazki,L (1488) -Georgiev,N ICCF 2015 1-0 (28)}) 5... dxe4 6. Nc3 g6 7. Bxe4 Nf6 8. Bg5 hxg4 9. h4 Bc5 10. f3 O-O 11. Qe2 g3 12. Qg2 Be6 13. Qxg3 Nbd7 14. a3 Nb6 15. f4 exf4 { Martindale,R (1612)-Nelson,A ICCF 2010 1-0 (29)}) (4. c4 dxc4 5. b3 (5. Qa4 Be6 6. d3 cxd3 7. exd3 Qxd3 8. Nd2 Nd7 9. Ne2 Ngf6 10. Bxc6 bxc6 11. Qxc6 Bd5 12. Qc3 Qxc3 13. Nxc3 Bxh1 14. f3 Bc5 15. Ne2 Nd5 16. Ng3 Bg2 {Fernandez,Q (1455) -Verdugo Barba,O (1560) ICCF 2019 0-1}) 5... h5 6. bxc4 Qd4 7. Qc2 Bc5 8. e3 Qxa1 9. Qb2 Qxb2 10. Bxb2 f6 11. d4 Bb4+ 12. Bc3 Bxc3+ 13. Nxc3 exd4 14. exd4 hxg4 {0-1 (14) Fernandez,Q-Gracia Traín,C ICCF 2011}) (4. Nc3 Nf6 5. g5 Nfd7 6. d4 g6 7. e4 Bg7 8. dxe5 Nxe5 9. exd5 Nc4 10. Qe2+ Qe7 11. Qxe7+ Kxe7 12. Nge2 Rd8 13. b3 Ne5 14. Ba3+ Ke8 15. f4 Ned7 {Dijk,J-Räisänen,T (1431) ICCF 2015 1-0 (29)}) (4. Nf3 e4 5. d3 exf3 6. Bxf3 h5 7. gxh5 Qh4 8. Rf1 Bc5 9. Bg4 Bxg4 10. hxg4 Qxg4 11. e3 Qxd1+ 12. Kxd1 Rxh5 13. d4 Bd6 14. Re1 Nd7 15. e4 dxe4 { Latta,D-Caliguire,J (2085) ICCF 2012 0-1}) 4... e4 (4... Nd7 5. c4 dxc4 6. Nc3 Qa5 7. Nf3 Bb4 8. Bd2 exd4 9. Nxd4 Ne7 10. a3 Bxc3 11. Bxc3 Qc7 12. Nf5 Nxf5 13. gxf5 Nf6 14. e4 O-O 15. Bxf6 gxf6 16. Rg1 {Morley,P (2241)-Kürten,D (2085) ICCF 2008 1/2 (48)}) 5. c4 (5. Bf4 Bd6 6. Be5 Bxe5 7. dxe5 Qb6 8. b3 Nd7 9. e3 Nxe5 10. Qd4 Qxd4 11. exd4 Ng6 12. Nd2 N8e7 13. c4 Nf4 14. Bxe4 dxe4 {0-1 (14) Fernandez,Q (1415)-Brown,K ICCF 2016}) 5... Bd6 (5... h5 6. g5 (6. Nc3 hxg4 7. hxg4 Rxh1 8. Bxh1 Qh4 9. Bg2 Nf6 10. cxd5 cxd5 11. Qb3 Nxg4 12. Nh3 e3 13. Nxd5 exf2+ 14. Kd1 Bd6 15. Bg5 Qg3 16. Qxg3 Bxg3 17. e3 Nc6 {Orlando,E (2059) -Rogers,B (2041) ICCF 2020 1/2 (38)}) 6... Bd6 (6... Ne7 7. Nc3 Nf5 8. h4 Be6 9. cxd5 cxd5 10. f3 exf3 11. Nxf3 Bd6 12. O-O Nc6 13. e4 dxe4 14. Nxe4 Ng3 15. Re1 Nxe4 16. Rxe4 Qb6 17. g6 O-O-O 18. Ng5 {Hasidume,S (1849)-Ould Ahmed,S (2344) ICCF 2009 0-1 (32)}) 7. Nc3 Ne7 8. h4 Be6 9. Bd2 O-O (9... Nd7 10. Bh3 O-O 11. e3 g6 12. Qc2 a5 13. a3 Rb8 14. Qb3 dxc4 15. Qc2 Bxh3 16. Nxh3 Bc7 17. Nxe4 b5 18. Ng1 Nd5 19. Ne2 Qe7 20. O-O Rbe8 21. N4g3 {Vorontsov,G (1990) -Heinke,R (2376) ICCF 2017 0-1 (39)}) 10. e3 Qd7 11. Bh3 Na6 12. a3 Bxh3 13. Nxh3 g6 14. b4 Rad8 15. Qb3 Qg4 16. c5 Bc7 17. Nf4 {Wolff,N (1674)-Emelyanenko, A ICCF 2012 0-1}) (5... Be6 6. cxd5 Bxd5 7. Nc3 h6 8. f3 exf3 9. Nxf3 Nf6 10. Nxd5 Nxd5 11. Qb3 Bb4+ 12. Bd2 Bxd2+ 13. Kxd2 Qe7 14. Rae1 O-O 15. e3 Na6 16. e4 Nf4 17. Rhg1 {Fernandez,Q (1455)-Lamy,O (1505) ICCF 2019 0-1 (37)}) (5... f5 6. Nc3 dxc4 7. gxf5 Bxf5 8. Bxe4 Bxe4 9. Nxe4 Qd5 10. Ng3 Nf6 11. Nf3 Bd6 12. Rg1 O-O 13. Qc2 Na6 14. a3 Bxg3 15. Rxg3 Rae8 16. Be3 b5 17. Rg5 {Morley,P (2201)-Du Bois,Y ICCF 2007 1-0 (26)}) 6. Nc3 Ne7 (6... Be6 7. Qb3 Qb6 8. Qxb6 axb6 9. cxd5 cxd5 10. Nb5 {1-0 (10) Michas,J-Gillard,J (1637) ICCF 2014}) 7. Bg5 (7. Qb3 O-O (7... a5 8. Bd2 a4 9. Nxa4 dxc4 10. Qc2 f5 11. h4 Na6 12. a3 fxg4 13. Bxe4 O-O 14. Bxh7+ Kh8 15. Be4 Nf5 16. O-O-O b5 17. Bg5 Qc7 18. Nc3 b4 19. Nb1 {Chripko,L-Sadowski,M (2088) ICCF 2006 0-1 (40)}) 8. Bd2 (8. cxd5 cxd5 9. Bd2 Be6 10. Nb5 Nbc6 11. e3 Bb8 12. Rc1 f5 13. gxf5 Bxf5 14. Ne2 a6 15. Na3 Qd7 16. Nc3 Kh8 17. Na4 Bg6 18. Nb6 Qf5 19. O-O Bh5 {Dijk,J (1797)-Groot,P (2245) ICCF 2019 0-1}) (8. Bg5 f6 9. cxd5 cxd5 10. Nxd5 (10. Bd2 Kh8 11. Nxd5 Be6 12. Bxe4 Nbc6 13. Nf3 Rc8 14. Nxe7 Bxb3 15. Nxc8 Bf7 16. Nxd6 Qxd6 17. Bc3 Re8 18. Bd3 Nb4 19. Bxb4 Qxb4+ 20. Kf1 Bd5 21. b3 g6 {Oldrati,P (1979)-Fedeli, L (2082) ICCF 2012 1/2 (41)}) 10... Be6 11. Nxe7+ Qxe7 12. d5 Bf7 13. Bd2 Nd7 14. Rd1 Nc5 15. Qe3 Bxd5 16. b4 Na4 17. Qd4 Nb6 18. e3 Rac8 19. Qa1 Rc2 { Lang,A-Beckett,P (1999) ICCF 2011 0-1 (26)}) 8... Na6 9. cxd5 cxd5 10. Nxd5 Nxd5 11. Qxd5 Re8 12. Bxe4 Nc7 13. Bxh7+ Kxh7 14. Qxf7 Be6 15. Qh5+ Kg8 16. Nf3 Bf7 17. Qf5 Qe7 18. Ne5 Bxe5 {Oldrati,P (1979)-Brotherton,T (1980) ICCF 2012 0-1 (38)}) (7. e3 Be6 (7... O-O 8. Nge2 f5 9. gxf5 Qd7 10. cxd5 cxd5 11. Qb3 Qxf5 12. Bxe4 Qxf2+ 13. Kd1 Kh8 14. Nxd5 Bf5 15. Bxf5 Nxf5 16. Qxb7 Nd7 17. Qxd7 Qg2 18. Re1 Qxd5 19. Nc3 {Vorontsov,G (1990)-Perrin,R (2066) ICCF 2017 0-1 (39)}) 8. Nge2 O-O 9. O-O f5 10. cxd5 cxd5 11. f3 exf3 12. Bxf3 Nbc6 13. Nf4 Bxf4 14. exf4 Qb6 15. Be3 Qxb2 16. Qe1 Qb6 17. Na4 Qc7 18. Nc5 Bc8 { Vorontsov,G (1990)-Ylipartanen,J (2063) ICCF 2017 0-1 (55)}) 7... f6 8. Bd2 O-O 9. Qb3 (9. e3 Kh8 10. Nge2 f5 11. gxf5 Bxf5 12. Qb3 Nd7 13. cxd5 cxd5 14. Nb5 Bb8 15. Bb4 Nb6 16. Nbc3 Bd6 17. Bxd6 Qxd6 18. Bf1 Bd7 19. h4 Bg4 20. h5 Rac8 { Lilleeng,A (2148)-Andreassen,E (2185) ICCF 2012 0-1 (32)}) 9... Kh8 10. O-O-O ( 10. e3 a5 11. Nge2 f5 12. c5 Bc7 13. f4 fxg4 14. O-O-O gxh3 15. Bxh3 Rf6 16. Rdg1 Nd7 17. Bxd7 Qxd7 18. Na4 Ra6 19. Be1 Kg8 20. Ng3 Qe6 21. Rh4 Rg6 { Ohtake,S (2385)-Dunlop,G (2444) ICCF 2014 0-1 (44)}) 10... b5 11. cxb5 f5 12. Bg5 Be6 13. f3 Qc7 14. fxe4 {Cordes,T (2213)-Bastos,W ICCF 2016 1-0 (27)}) ( 2... e5 3. c4 (3. d4 exd4 (3... Nc6 4. dxe5 Nxe5 5. Nc3 Nxg4 6. Qxd5 Qxd5 7. Nxd5 Rb8 8. Nxc7+ Kd8 9. Bf4 Bc5 10. Nh3 N8f6 11. Nb5 Ra8 12. Rd1+ Bd7 13. Bxb7 Rc8 14. Bxc8 Kxc8 15. Nd6+ {Polchowski,T-Selby,R (1215) ICCF 2020 1-0 (31)}) 4. Qxd4 Be6 (4... Nc6 5. Qxd5 Qxd5 6. Bxd5 Nge7 7. Bf3 Nd4 8. Na3 Nxf3+ 9. exf3 Bd7 10. Be3 h5 11. gxh5 Rxh5 12. Ne2 O-O-O 13. O-O-O Re8 14. Nc4 Nf5 15. Ng3 Nxe3 16. Nxe3 {Vorontsov,G (1990)-Lanz Calavia,J (2271) ICCF 2017 0-1 (67)}) 5. Nc3 (5. Nh3 Nc6 6. Qa4 Bb4+ 7. c3 Bd6 8. Ng5 Nf6 9. Nxe6 fxe6 10. g5 Nd7 11. Na3 a6 12. O-O h6 13. Qh4 Qe7 14. Qh5+ Qf7 15. Qxf7+ Kxf7 16. gxh6 Nf6 { Ohtake,S (2385)-Tsang,H (2341) ICCF 2014 0-1 (57)}) 5... Nc6 6. Qa4 a6 7. Nf3 b5 8. Qf4 b4 9. Na4 Bd6 10. Qg5 Nf6 11. h3 O-O 12. b3 h6 13. Qe3 Re8 14. Qd3 Ne7 {Dijk,J (1797)-Budding,A (2163) ICCF 2019 0-1 (28)}) (3. e4 Nf6 4. g5 Nxe4 5. Bxe4 dxe4 6. h4 Bf5 7. Nc3 Nc6 8. a3 Qd7 9. d3 exd3 10. cxd3 O-O-O 11. Be3 Qe6 12. Qa4 Rxd3 13. Rc1 Be7 14. Bxa7 Rhd8 {Kaytazki,L (1478)-Stoykov,I ICCF 2020 0-1 (41)}) 3... dxc4 (3... c6 4. cxd5 (4. Nc3 d4 5. Ne4 Bxg4 6. Qb3 f5 7. Qxb7 Nd7 8. h3 fxe4 9. hxg4 Ngf6 10. Qxc6 Rc8 11. Qe6+ Be7 12. b3 e3 13. g5 exf2+ 14. Kxf2 Nc5 15. Qf5 Nfe4+ {Potter,D-Jokipii,G ICCF 2008 0-1}) 4... cxd5 5. Qb3 (5. d4 Nc6 6. dxe5 Bb4+ 7. Bd2 Nge7 8. Bxb4 Nxb4 9. Qa4+ Nbc6 10. Nc3 O-O 11. Nf3 Bxg4 12. Qxg4 Ng6 13. Qg3 d4 14. O-O-O Qb6 15. Ne4 Rac8 16. Kb1 Qc7 {Domenche Redondo,F (1776)-Mascaró Pastor,M (1579) ICCF 2015 1-0 (52)}) 5... Ne7 6. Nc3 e4 7. d4 Nbc6 8. Nxd5 Nxd4 9. Qa4+ Ndc6 10. Qxe4 Be6 11. Nxe7 Bxe7 12. Qc2 Rc8 13. h3 O-O 14. Bxc6 Rxc6 15. Qa4 {Galanti,S-Wood,B ICCF 2006 1-0 (27)}) 4. Qa4+ (4. Qc2 Nf6 5. g5 Nd5 6. Qxc4 (6. Qe4 Be6 7. d4 exd4 8. Bh3 Bb4+ 9. Kf1 Qe7 10. Qxd4 Nc6 11. Qd1 Qd7 12. Bxe6 Ne3+ {0-1 (12) Kaytazki,L (1487) -Drus,M (1804) ICCF 2014}) 6... Be6 7. Qb5+ c6 8. Qxb7 Nd7 9. Na3 Bc5 10. Nc2 O-O 11. d4 exd4 12. Nf3 d3 13. exd3 Bxf2+ 14. Kxf2 Nc5 15. Qxc6 Rc8 {Michas,J (1579)-Opperman,R (2242) ICCF 2016 0-1 (35)}) (4. b3 cxb3 5. Qxb3 Qd4 6. Bxb7 Bxb7 7. Qxb7 Qxa1 8. Qxa8 Qxb1 9. Kd1 Ba3 10. e3 Qxc1+ 11. Ke2 Qc4+ 12. Kf3 Qc6+ 13. Qxc6+ Nxc6 14. Ne2 Nge7 15. Nc3 O-O {Fernandez,Q-Gibson,C (1457) ICCF 2015 0-1 (35)}) 4... c6 5. Qxc4 Be6 6. Qc3 (6. Qa4 Nd7 7. h3 h5 8. d3 hxg4 9. hxg4 Rxh1 10. Bxh1 Nc5 11. Qc2 Qh4 12. Bg2 Qxg4 13. Kf1 Nf6 14. Be3 Nfd7 15. Nd2 Bd5 16. f3 Qg6 17. Rc1 Ne6 {Bau,E (2047)-Gala,K (2052) ICCF 2010 0-1}) (6. Qc2 Bxg4 7. Qa4 Nf6 8. h3 Be6 9. d3 Nbd7 10. Bg5 Qb6 11. Qc2 Bc5 12. Bxf6 Bxf2+ 13. Kf1 Nxf6 14. Nf3 Nd5 15. Nxe5 Bg3 16. Nc4 Qf2# {0-1 (16) Fernandez,Q (1455) -Haase,F ICCF 2019}) (6. Qd3 Qxd3 7. exd3 Na6 8. h3 Nb4 9. Na3 Nxd3+ 10. Ke2 Nf4+ 11. Kf3 Bd5+ 12. Kg3 Nxg2 13. f3 Ne1 14. Kf2 Nd3+ 15. Ke2 O-O-O 16. Rh2 Bc5 17. Kxd3 Bxf3+ {Fernandez,Q (1455)-Thys,H (1720) ICCF 2019 0-1 (32)}) (6. Qe4 Nf6 7. Qa4 Nxg4 8. Bh3 b5 9. Qc2 Nxf2 10. Kxf2 Bxh3 {0-1 (10) Fernandez,Q (1340)-Treff,L ICCF 2019}) 6... Nd7 7. h3 Ngf6 (7... h5 8. gxh5 Qb6 9. a3 Nc5 10. d3 Nb3 11. Be3 Qc7 12. Ra2 Nf6 13. Nf3 Nd4 14. Bxd4 exd4 15. Nxd4 Bxa2 16. O-O Rxh5 17. b3 Nd5 18. Qc4 Nf4 19. Bxc6+ {Kaytazki,L (1495)-Geiser,A (2107) ICCF 2011 0-1}) 8. b3 (8. d3 h5 9. Nf3 hxg4 10. hxg4 Rxh1+ 11. Bxh1 Nxg4 12. Bg5 Qb6 13. d4 Bb4 14. Bd2 Bxc3 15. Bxc3 Bd5 16. Nbd2 e4 17. Ng5 c5 18. dxc5 Qh6 19. Bxe4 Qxg5 {Kaytazki,L (2055)-Sibeldin,D ICCF 2007 0-1 (27)}) 8... h5 9. g5 Nd5 10. Qg3 h4 11. Qh2 Nb4 12. Be4 Nc5 13. Qxe5 Nxe4 14. Qxe4 {Kaytazki,L (2002)-Lixa,A (1746) ICCF 2008 0-1 (28)}) (2... Nc6 3. g5 (3. c4 dxc4 (3... d4 4. g5 h6 5. d3 e5 6. Nf3 hxg5 7. Nxg5 Bb4+ 8. Kf1 Nh6 9. a3 Be7 10. Bxc6+ bxc6 11. Ne4 Bh3+ 12. Ke1 f5 13. Bxh6 fxe4 14. Bxg7 Rh5 15. Rg1 {Irlbacher,R (1802) -Piqueras Jiménez,M (2020) ICCF 2015 0-1}) (3... e6 4. cxd5 exd5 5. h3 Bb4 6. Qb3 Nf6 7. a3 Bc5 8. Nc3 Nd4 9. Qd1 O-O 10. e3 Re8 11. b4 Bb6 12. Kf1 Ne6 13. d4 c6 14. a4 Bc7 15. Nf3 {Irlbacher,R (1802)-Tarnowski,R (1936) ICCF 2015 0-1 (31)}) 4. Qa4 (4. e3 Ne5 5. h3 Nd3+ 6. Kf1 e5 7. Qa4+ c6 8. Qxc4 Be6 9. Qc2 Nb4 10. Qc3 h5 11. a3 Nd3 12. Nf3 hxg4 13. Nxe5 Nxe5 14. Qxe5 Nf6 15. Nc3 Rh5 { Kaytazki,L (1468)-Maguire,G ICCF 2014 0-1 (29)}) (4. Bxc6+ bxc6 5. Qa4 Qd5 6. f3 Qb5 7. Qc2 e5 8. Nc3 Qa6 9. Nh3 h5 10. Ng5 Be7 11. Nge4 hxg4 12. fxg4 Bxg4 13. Nf2 Be6 14. Qe4 Rh5 15. a4 Nf6 {Bau,E (2073)-Civan,E (2075) ICCF 2010 0-1}) (4. g5 h6 5. d3 hxg5 6. Bxg5 Qd6 7. Bxc6+ Qxc6 8. Nf3 f6 9. Bf4 g5 10. Rg1 gxf4 11. Nd4 Qb6 12. e3 fxe3 13. fxe3 e5 14. Rxg8 Rxg8 15. Qh5+ Ke7 {Irlbacher,R (1802)-Piqueras Jiménez,M (2020) ICCF 2015 0-1}) 4... Qd6 5. h3 h5 6. g5 Qc5 7. h4 Bd7 8. Qd1 O-O-O 9. Nc3 e5 10. a3 Nd4 11. Rb1 Bf5 12. e4 Bg4 13. f3 Be6 14. Bh3 Ne7 {Kaytazki,L (1478)-Romanov,V (1984) ICCF 2015 0-1 (31)}) (3. d4 Bxg4 4. c4 Nf6 5. cxd5 Nxd5 6. Bxd5 Qxd5 7. f3 Be6 8. Be3 O-O-O 9. Nc3 Qc4 10. Qb3 Nxd4 11. Bxd4 Qxd4 12. Qc2 g6 13. Rd1 Qh4+ 14. Kf1 Bh6 {Kaytazki,L (1446)-Sabbatini, G (1913) ICCF 2017 0-1}) (3. h3 h5 4. Nc3 d4 5. Ne4 hxg4 6. hxg4 Rxh1 7. Bxh1 Bxg4 8. c3 e5 9. Qb3 Rb8 10. f4 Be6 11. c4 Qh4+ 12. Ng3 Nb4 13. Nf3 Qxg3+ 14. Kd1 d3 {Fernandez,Q (1455)-Lund,S (1315) ICCF 2019 0-1}) 3... e5 4. d3 Be6 ( 4... h6 5. h4 Nge7 6. Nc3 Bg4 7. f3 Be6 8. e4 hxg5 9. Bxg5 f6 10. Bd2 Qd7 11. f4 O-O-O 12. fxe5 dxe4 13. exf6 exd3 14. fxe7 Bxe7 15. Bxc6 bxc6 16. Be3 { Kaytazki,L (1446)-Alexiev,K ICCF 2017 0-1 (34)}) 5. e4 dxe4 6. Bxe4 Qd7 7. Nf3 O-O-O 8. a3 h6 9. Bxc6 Qxc6 10. Rg1 e4 11. Ne5 Qc5 12. Ng4 exd3 13. c3 hxg5 14. Be3 {Irlbacher,R (1779)-Pivirotto,F (1827) ICCF 2018 0-1}) (2... Nf6 3. g5 Ne4 4. d3 Nc5 (4... Nxf2 5. Kxf2 e5 6. d4 e4 7. Bh3 f5 8. c4 c5 9. Bf4 cxd4 10. Qxd4 Nc6 11. Qxd5 Qb6+ 12. Be3 Qxb2 13. Bxf5 Bxf5 14. Qxf5 Qxa1 15. Qxe4+ Qe5 16. Qxe5+ {Irlbacher,R (1779)-Enoksson,B (1464) ICCF 2018 0-1}) 5. Nc3 c6 6. d4 Ne4 7. Nxe4 dxe4 8. Bxe4 g6 9. Bf4 Bg7 10. Nf3 Bg4 11. Qd3 O-O 12. O-O-O Na6 13. Ne5 Nb4 14. Qb3 {Fonseca,P-Schuster,P ICCF 2007 1-0 (32)}) (2... c5 3. c4 d4 4. Qb3 Nc6 5. g5 h6 6. d3 hxg5 7. Bxg5 Qc7 8. Nf3 f6 9. Bh4 Qf4 10. e3 dxe3 11. Bg3 exf2+ 12. Kxf2 Qg4 13. Nc3 e5 14. Nb5 {Bau,E (2073)-Cipressi,N (2214) ICCF 2010 0-1}) (2... e6 3. c4 (3. d3 Bd6 (3... Nf6 4. g5 Nfd7 5. Nc3 c5 6. Nf3 Nc6 7. O-O Be7 8. Bf4 b6 9. Qd2 Bb7 10. e4 d4 11. Nb5 O-O 12. Nd6 Bxd6 13. Bxd6 Re8 14. e5 Ne7 15. Rfe1 {Domenche Redondo,F (1759)-Lucena Cifré,R (1547) ICCF 2017 1-0 (36)}) 4. Nf3 Nf6 5. g5 Nfd7 6. b3 Nf8 7. Bb2 Ng6 8. Bxg7 Rg8 9. Bf6 Be7 10. Bxe7 Qxe7 11. h4 Nf4 12. Bh3 Nxh3 13. Rxh3 Nc6 14. c3 b6 {Kaytazki,L (2002)-Daudish,J ICCF 2008 1-0 (34)}) 3... c5 (3... c6 4. cxd5 exd5 5. Qb3 Bd6 6. Qc3 Qf6 7. h3 Nd7 8. Nf3 Ne7 9. d3 Ng6 10. Qc2 Nf4 11. Bf1 O-O 12. Nc3 Nb6 13. Be3 Re8 14. O-O-O c5 15. Nb5 {Bau,E (2073)-Martin,A (1930) ICCF 2010 0-1 (36)}) (3... dxc4 4. Qa4+ Qd7 5. Qxd7+ Nxd7 6. Nc3 Nb6 7. Nf3 h6 8. a3 Ne7 9. d3 Ned5 10. Ne5 Nxc3 11. bxc3 Nd5 12. Bxd5 exd5 13. dxc4 dxc4 14. Nxc4 Bxg4 15. Bf4 {Fernandez,Q (1455)-Hardwick,M (1161) ICCF 2019 1/2 (26)}) (3... Qd7 4. d3 Bb4+ 5. Bd2 Bxd2+ 6. Nxd2 dxc4 7. Nxc4 Nc6 8. Qb3 Nd4 9. Qc3 f6 10. e3 Nb5 11. Qd2 Ne7 12. f4 Nd6 13. Ne2 Nxc4 14. dxc4 Qxd2+ {1/2 (14) Fernandez,Q (1455) -Hardwick,M (1161) ICCF 2019}) 4. d3 (4. cxd5 exd5 5. d4 Nc6 6. Qb3 c4 7. Qe3+ Be7 8. Nc3 Bxg4 9. Bxd5 Nf6 10. Bxc6+ bxc6 11. h3 Bf5 12. Qf3 c5 13. Qxf5 cxd4 14. Ne4 Qd5 15. Nxf6+ {1-0 (15) Fernandez,Q (1455)-Herrera,J ICCF 2019}) 4... Nc6 5. Nc3 d4 6. Ne4 e5 7. h3 Nf6 8. f4 Nxe4 9. Bxe4 h5 10. g5 Bd6 11. f5 Ne7 12. Nf3 Nxf5 13. g6 f6 14. Bd5 {Michas,J (1698)-Hebel,E ICCF 2016 0-1 (42)}) ( 2... g6 3. h4 Nf6 4. g5 Nh5 5. c4 Nf4 6. cxd5 Nxg2+ 7. Kf1 Nf4 8. Qa4+ Bd7 9. Qxf4 Bg7 10. Nf3 O-O 11. h5 c6 12. h6 e5 13. Nxe5 f5 14. hxg7 {Fernandez,Q (1340)-Anderson,L (912) ICCF 2019 1-0}) 3. c4 (3. d4 Nf6 4. h3 Bd7 5. Nc3 c6 6. Nf3 e6 7. Bg5 Be7 8. Bxf6 Bxf6 9. e4 dxe4 10. Ng1 Bc8 {0-1 (10) Giannulli, G-Glover,S ICCF 2019}) 3... c6 (3... Nf6 4. cxd5 (4. Qa4+ Bd7 5. Qb3 Bc6 6. cxd5 Nxd5 7. Nc3 e6 8. Nxd5 exd5 9. e3 Bd6 10. Bxd5 Bxd5 11. Qxd5 Nc6 12. d4 Bb4+ 13. Bd2 Bxd2+ 14. Kxd2 Qxd5 15. f3 O-O {Fernandez,Q (1455)-Visser,A (1873) ICCF 2019 0-1}) 4... Nxd5 5. Qb3 e6 6. Qa4+ Nc6 7. Qxg4 Ndb4 (7... Qf6 8. Bxd5 exd5 9. Nc3 Bc5 10. e3 d4 11. Nd5 Qd8 12. Qxg7 Kd7 13. Qxf7+ Ne7 14. Nxe7 Qxe7 15. Qxe7+ Kxe7 16. exd4 Bxd4 17. Nf3 Bf6 18. d4 Rae8 19. Be3 {Fernandez,Q (1455)-Hardwick,M (1161) ICCF 2019 1-0 (31)}) 8. Bxc6+ Nxc6 9. Nf3 Nb4 10. Kd1 g6 11. a3 Nd5 12. Nc3 Bc5 13. Ke1 f5 14. Qa4+ c6 15. b4 {Bau,E (2073)-Kayaalp, B ICCF 2010 1-0}) (3... e6 4. cxd5 (4. Qb3 Qc8 5. cxd5 c6 6. dxe6 Bxe6 7. Bh3 Bxh3 8. Nxh3 Bc5 9. Rg1 Bd4 10. Na3 Ne7 11. Nc2 Bf6 12. d4 Na6 13. e4 Ng6 14. Bg5 Qc7 15. O-O-O O-O-O {Klein,M (1981)-Shtrikman,R (1797) ICCF 2012 1-0 (41)}) (4. Nc3 c6 5. Qb3 Qc7 6. d4 Nd7 7. f3 dxc4 8. Qxc4 Bh5 9. Nh3 Ngf6 10. Bf4 Bd6 11. Bxd6 Qxd6 12. Ng5 Qf4 13. Nh3 Qh4+ 14. Nf2 Nb6 15. Qc5 Nfd7 {Domenche Redondo,F (1952)-Soto Palomo,C (1931) ICCF 2016 0-1 (35)}) 4... exd5 5. Qb3 Nf6 6. Nc3 (6. Qxb7 Nbd7 7. Qc6 Bd6 8. Nc3 O-O 9. Nxd5 Nxd5 10. Qxd5 Rb8 11. Qe4 Rb4 12. d4 Nf6 13. Qd3 Qd7 14. Nf3 Re8 15. a3 Rb6 16. b4 Bf5 17. Qd1 Qb5 { Michas,J (1813)-Taylor,K (2024) ICCF 2018 0-1 (55)}) 6... c6 (6... Nbd7 7. Nxd5 Nxd5 8. Bxd5 Bh5 9. Bxb7 Rb8 10. Qd5 Bd6 11. Qxh5 Rxb7 12. Nf3 O-O 13. b3 Qf6 14. d4 Bb4+ 15. Kf1 Bc3 16. Rb1 Qa6 17. Qf5 Qxa2 18. Rg1 {Vorontsov,G (1990) -Satosuo,R (1983) ICCF 2017 1/2}) 7. Qxb7 Nbd7 8. Qxc6 Rc8 9. Qb5 Bc5 10. h3 Bh5 11. Bxd5 O-O 12. Bb7 Rb8 13. d4 Bxd4 14. Bf4 Ne5 15. O-O-O {Domenche Redondo,F (1722)-Lucena Cifré,R (1551) ICCF 2018 1-0 (26)}) (3... dxc4 4. Bxb7 Bf3 5. Nxf3 Nc6 6. Bxc6+ Qd7 7. Bxd7+ {1-0 (7) Smith,J-Latta,D ICCF 2012}) ( 3... d4 4. Bxb7 Nd7 5. Bxa8 Qxa8 6. f3 e5 7. d3 Be7 8. h3 Bh4+ 9. Kf1 Be6 10. Nd2 Ne7 11. Ne4 f5 12. Bg5 fxe4 13. Bxh4 Nf5 14. Bf2 e3 15. Be1 {Bruce,R (2002) -Sherwood,R (2361) ICCF 2019 0-1 (25)}) (3... e5 4. Qb3 Nc6 5. cxd5 Nd4 6. Qc4 Nf6 7. e3 b5 8. Qd3 Bf5 9. e4 Qxd5 10. Nc3 Qb7 11. Nf3 Nxf3+ 12. Bxf3 Bd7 13. Nd5 Nxd5 14. exd5 Bc5 15. Qc3 {Kaytazki,L (2002)-Gillen,S ICCF 2008 0-1 (39)}) 4. cxd5 (4. Qb3 e6 (4... Qc7 5. d4 dxc4 6. Qxc4 e6 7. Nc3 Nd7 8. d5 Ne5 9. Qa4 Nf6 10. f4 Ned7 11. dxc6 bxc6 12. Bxc6 Rb8 13. Bxd7+ Nxd7 14. Nf3 Rb4 15. Nb5 Qc6 16. Nc7+ {Kaytazki,L (1949)-Daanen,A ICCF 2008 0-1}) (4... Nf6 5. Qxb7 Nbd7 6. Nc3 e5 7. Qxc6 Rc8 8. Qb5 a6 9. Qb3 dxc4 10. Qa4 Bc5 11. Nf3 O-O 12. h3 Bf5 13. Qxa6 e4 14. Nh2 Ne5 15. Ng4 Nfxg4 16. hxg4 {Domenche Redondo,F (1717) -Wimmer,R (2030) ICCF 2017 0-1}) 5. cxd5 (5. Qxb7 Nd7 6. Nc3 Ne7 7. cxd5 exd5 8. d4 Rb8 9. Qa6 Rb6 10. Qd3 Ng6 11. h3 Be6 12. Nf3 Bd6 13. h4 O-O 14. b3 Qf6 15. Kf1 h6 16. h5 Bf5 {Ohtake,S (2385)-Parsons,L (2359) ICCF 2014 1/2 (44)}) 5... exd5 6. Qxb7 Nd7 7. Nc3 (7. d4 Bd6 8. h3 Bf5 9. Nc3 Ne7 10. Nf3 a5 11. Qb3 Rb8 12. Qd1 O-O 13. Nh4 Be6 14. Nf3 Re8 15. Rg1 Ng6 16. Qa4 Qc8 17. a3 Nb6 18. Qxa5 Bxh3 {Dijk,J-Lukyanenko,V ICCF 2015 0-1 (34)}) 7... Rc8 (7... Qc8 8. Qb3 Ngf6 9. d4 Bd6 10. e4 dxe4 11. Nxe4 Nxe4 12. Bxe4 O-O 13. f3 Re8 14. Kf1 Nf6 15. Bd3 Bh3+ 16. Kf2 Nd5 17. Bd2 Bf4 18. Qc2 Ne3 19. Bxe3 {Kaytazki,L (1478) -Tedesco,M (2050) ICCF 2015 0-1 (29)}) 8. d4 Bd6 9. Nf3 Ne7 10. h3 Be6 11. Bd2 O-O 12. e3 Rb8 13. Qa6 Rxb2 14. Na4 Rb5 15. Bf1 Rb8 {Battaglia,H (1777)-Deakin, C ICCF 2020 0-1 (42)}) 4... cxd5 (4... Nf6 5. Nc3 (5. Qa4 Bd7 6. Nc3 (6. Qb3 cxd5 7. Qxb7 Nc6 8. Qb3 Rb8 9. Qd3 {1-0 (9) Fernandez,Q (1455)-Vander Hill,J ICCF 2019}) 6... cxd5 {0-1 (6) Fernandez,Q (1415)-Kocian,L (1828) ICCF 2016}) ( 5. dxc6 Nxc6 6. h3 (6. Qc2 Rc8 7. Qa4 Qd4 8. Qxd4 Nxd4 9. Na3 e5 10. Bxb7 Bxa3 11. Bxc8 Bxc8 12. bxa3 Nc2+ 13. Kd1 Nxa1 14. Bb2 Ne4 15. Nh3 Bxh3 16. Rg1 Nxf2+ 17. Kc1 Ke7 {Irlbacher,R (1802)-Olivares Flores,B (1781) ICCF 2015 0-1}) 6... Bf5 7. Bxc6+ bxc6 8. Nc3 e5 9. Qa4 Qc7 10. d3 Be7 11. Bg5 O-O 12. Nf3 Rab8 13. Qc2 Nh5 14. O-O-O Rfd8 15. e4 Bxg5+ 16. Nxg5 Bc8 {Kaytazki,L (1478) -Grinkevicius,A ICCF 2016 0-1}) 5... e5 6. d4 exd4 7. Qxd4 Be6 8. e4 cxd5 9. exd5 Nc6 10. Qd2 Nxd5 11. Nxd5 Bxd5 12. Bxd5 Bd6 13. Nf3 O-O 14. O-O Qf6 15. Qg5 Qxg5+ 16. Bxg5 {Michas,J (1698)-Hutchings,J (1667) ICCF 2016 1-0}) (4... Qb6 5. Qb3 Qxb3 6. axb3 Bd7 7. Nc3 e6 8. dxc6 Nxc6 9. Nb5 Kd8 10. d3 f6 11. Bd2 a6 12. Na3 Bxa3 13. Rxa3 Nge7 14. Nf3 Ke8 15. O-O Kf7 16. b4 {Irlbacher,R (1802)-Hohenberger,K (1857) ICCF 2015 1-0 (30)}) (4... Bd7 5. Qb3 Qb6 6. dxc6 Bxc6 7. Qxb6 axb6 8. Bxc6+ bxc6 9. Nf3 f6 10. Nd4 Kf7 11. f4 e6 12. f5 exf5 13. Nxf5 g6 14. Ne3 Bc5 15. O-O Bxe3+ 16. dxe3 {Irlbacher,R (1746)-Hohenberger,K (1866) ICCF 2015 0-1 (35)}) 5. Qb3 (5. Qa4+ Bd7 6. Qb3 e6 (6... Qc7 7. Nc3 e6 8. Nf3 Nf6 9. O-O a6 10. d3 Bc6 11. Be3 Nbd7 12. h3 Bd6 13. Rac1 O-O 14. Nd4 Rac8 15. Na4 Bxa4 16. Qxa4 Qb8 17. Nf3 Rxc1 18. Rxc1 {Lilleeng,A (2148)-Nilson, B (2233) ICCF 2012 1-0 (40)}) (6... Nc6 7. Bxd5 e6 8. Bxc6 Bxc6 9. Nf3 Nf6 10. Rg1 Bc5 11. d4 Bd6 12. Rxg7 Qc7 13. Bd2 O-O-O 14. Bg5 Bxh2 15. Bxf6 Qf4 16. Qe3 Qd6 17. Bxd8 Bf4 18. Qd3 {Fernandez,Q-Anderson,L (1283) ICCF 2015 1-0}) 7. Qxb7 Nc6 8. Qb3 Rc8 9. d3 (9. Nf3 Nd4 10. Qd1 Nc2+ 11. Kf1 Nxa1 12. Nc3 Qb6 13. b3 d4 14. Bb2 dxc3 15. dxc3 Nf6 16. Bxa1 Ne4 17. Ne5 Qxf2# {0-1 (17) Fernandez,Q (1455)-Baranowiski Filho,M ICCF 2019}) 9... Nd4 {0-1 (9) Fernandez,Q (1415) -Kulick,N ICCF 2016}) 5... Nf6 (5... b6 6. Bxd5 Be6 7. Bxe6 fxe6 8. Qf3 Qd5 9. Qxd5 exd5 10. Nc3 Nf6 11. Nb5 Na6 12. a4 e5 13. a5 Rc8 14. e3 Nc5 15. Nxa7 Nb3 16. Nxc8 Nxa1 17. axb6 {Fernandez,Q (1455)-Arvidsson,D (1295) ICCF 2019 1-0 (46)}) (5... Qc7 6. Nc3 e6 7. Qa4+ {1-0 (7) Irlbacher,R (1808)-Himpel,R (1729) ICCF 2016} Nc6 8. Qxg4 Nf6 9. Qg3 Qxg3 10. hxg3 Bc5 11. e3 Nb4 12. Rb1 Nd3+ 13. Ke2 Nb4 14. a3 Nc6 15. b4 Bd6 16. Bb2 O-O 17. Nf3 a5 18. b5 Ne7 19. a4 { Smith,J-Ishler,M ICCF 2012 1-0 (32)}) (5... Qd7 6. Bxd5 Be6 7. Bxe6 fxe6 8. Nc3 b6 9. Nf3 h6 10. Ne5 Qd6 11. f4 Nd7 12. Ne4 Qd5 13. Qxd5 exd5 14. Nxd7 Kxd7 15. Ng3 e6 16. b3 Bb4 17. Bb2 {Irlbacher,R (1808)-Radzinski,S (1776) ICCF 2016 1-0 (29)}) (5... e6 6. Qa4+ {1-0 (6) Fernandez,Q (1455)-Davis,J (1273) ICCF 2019} Nc6 7. Qxg4 {1/2 (7) Domenche Redondo,F (1910)-Conde Poderoso,A ICCF 2014}) 6. Qxb7 Nbd7 (6... Qc8 7. Qxc8+ Bxc8 8. Nc3 e6 9. d4 Ba6 10. Bg5 Nbd7 11. Bxf6 Nxf6 12. e4 dxe4 13. Bxe4 Nxe4 14. Nxe4 Bb4+ 15. Nc3 Bb7 16. f3 O-O 17. O-O-O Rac8 18. h4 {Fernandez,Q (1455)-Verdugo Barba,O (1560) ICCF 2019 0-1 (38)}) 7. Nc3 (7. Bxd5 Rb8 8. Bxf7+ Kxf7 9. Qxa7 e5 10. d4 (10. f3 Bc5 11. Qa4 Rb4 12. Qc2 (12. Qd1 Ne4 13. fxe4 Qh4+ {0-1 (13) Fernandez,Q-Stewart,S ICCF 2015}) 12... Be6 13. a3 Rc4 14. Nc3 Nd5 15. d3 Qh4+ 16. Kd1 Rd8 17. dxc4 Nxc3+ 18. Qxc3 Nb6+ 19. Bd2 Nxc4 20. Kc2 Rxd2+ 21. Qxd2 Nxd2 {Fernandez,Q (1455)-Jose,A ICCF 2019 0-1}) 10... exd4 11. Qxd4 Bc5 12. Qf4 Rb4 13. Qg5 Bxf2+ 14. Kf1 Bh4 15. Qd2 Qb6 16. e3 Qb5+ 17. Kg2 Bh3+ 18. Kxh3 Qf5+ {Irlbacher,R (1779)-Leali,P ICCF 2018 0-1}) 7... e6 (7... Rb8 8. Qxa7 e5 (8... e6 9. Qe3 Rb4 10. d4 Bd6 11. h3 Bf5 12. Nf3 O-O 13. O-O h6 14. a4 Qa8 15. Ne5 Qa6 16. Rd1 Ra8 17. a5 Qb7 18. Bd2 {1-0 (18) Cordes,T (2213)-Hiçdönmez,H (2203) ICCF 2016}) 9. Qa4 d4 10. Nd5 Nxd5 11. Bxd5 Be7 12. d3 O-O 13. Bg2 Nc5 14. Qc2 e4 15. Bxe4 Nxe4 16. dxe4 f5 17. Bf4 Rc8 18. Qb3+ Kh8 19. e5 {Kaytazki,L (1506)-Stoyanov,N ICCF 2020 1-0 (27)}) (7... Qc8 8. Bxd5 Nxd5 9. Qxc8+ Rxc8 10. Nxd5 g6 11. d4 Bg7 12. Bg5 Bxd4 13. Nxe7 Rc5 14. Rd1 Rxg5 15. Rxd4 Kxe7 16. h4 Ra5 17. Rxg4 Rb8 18. Re4+ Kf6 19. Rd4 {Kaytazki,L (1434)-Golemanov,B (1837) ICCF 2017 1/2 (55)}) 8. d4 (8. Nb5 Rc8 9. Qxa7 (9. Nf3 Bc5 10. O-O Rb8 11. Qa6 Rb6 12. Qa4 Qb8 13. d4 Be7 14. Nc3 Bxf3 15. Bxf3 h5 16. Kg2 Ng4 17. Rh1 Rb4 18. Qa6 Rxd4 19. e4 dxe4 20. Bxe4 h4 {Molin,L (1886)-Vlasak,R (2208) ICCF 2016 0-1 (40)}) 9... Bc5 10. Qa4 O-O 11. b4 Bxf2+ 12. Kxf2 Ne4+ 13. Bxe4 Qf6+ 14. Bf3 Qxa1 15. Bxg4 Rxc1 16. Qa3 Nf6 17. Bf3 e5 18. h3 Rf1+ 19. Kg2 e4 {Michas,J (1850)-Tanase,M (1849) ICCF 2014 0-1 (35)}) 8... Rb8 9. Qa6 (9. Qxa7 Qc8 10. Qa4 Bb4 11. Bd2 Qc4 12. Bf1 Bxc3 13. Qc2 Bxd2+ 14. Qxd2 Ne4 15. Qa5 Qxd4 {0-1 (15) Irlbacher,R (1802)-Burridge, R (2074) ICCF 2015}) 9... Qc7 (9... Bb4 10. Bf4 (10. Nf3 Ne4 11. a3 Bxc3+ 12. bxc3 O-O 13. O-O Qc7 14. Qd3 Rb3 (14... Rfc8 15. Ng5 Nef6 16. e4 Rb3 17. f3 Rxc3 18. Qe2 Bh5 19. Bd2 Rc4 20. e5 Ne4 21. Nxe4 dxe4 22. Qe3 exf3 23. Bxf3 Bxf3 24. Rxf3 Qb6 25. Rf4 Nf8 26. Bb4 {Kaytazki,L (1408)-Eijkenboom,R ICCF 2018 0-1 (58)}) 15. Bd2 Ndf6 16. Ne5 Bf5 17. Qe3 Nxd2 18. Qxd2 Rc8 19. Rac1 Ne4 20. Bxe4 dxe4 21. f3 Bh3 {Kaytazki,L (1396)-Tsenkov,L (2260) ICCF 2018 0-1 (50) }) 10... e5 11. Bxe5 Nxe5 12. dxe5 d4 13. Kf1 O-O 14. Ne4 Nd7 15. f4 Nc5 16. Nxc5 Bxc5 17. Qc4 d3 18. Qxc5 dxe2+ 19. Nxe2 Rxb2 20. Kg1 Bxe2 21. h4 { Vorontsov,G (1990)-Burmeister,F (2270) ICCF 2017 0-1 (35)}) 10. Qd3 (10. Bg5 Rxb2 11. Rc1 Rb6 12. Qd3 Rc6 13. Bd2 Bf5 14. e4 Nxe4 15. Bxe4 Bxe4 16. Nxe4 Rxc1+ 17. Bxc1 Qxc1+ 18. Ke2 dxe4 19. Qxe4 Bd6 20. Qa8+ Ke7 21. Qxh8 Qc4+ { Kaytazki,L (1463)-Gavrilov,I ICCF 2016 0-1 (27)}) (10. Nb5 Bb4+ 11. Kd1 Qc4 12. Nd6+ Bxd6 13. Qxd6 Qxd4+ 14. Ke1 Rc8 15. Qa3 Rc2 16. Be3 Qc4 17. Bd2 Nc5 18. f3 Bf5 19. Qb4 Qxb4 20. Bxb4 O-O 21. b3 Rc8 {Kaytazki,L (1425)-Dimitrov,D (2199) ICCF 2018 0-1 (39)}) (10. e4 Bb4 11. Qd3 dxe4 12. Bxe4 Nxe4 13. Nge2 Bxe2 14. Kxe2 Nxc3+ 15. bxc3 Bxc3 16. Rb1 Rxb1 17. Qxb1 O-O 18. Qe4 Nf6 19. Qg2 Qc4+ 20. Kf3 Qd3+ 21. Be3 Qf5+ {Kaytazki,L (1440)-Denton,S ICCF 2017 0-1}) (10. Nh3 Bd6 11. f4 Bxh3 12. Bxh3 Rb6 13. Qd3 Bxf4 14. e3 Bxh2 15. Ne2 Bg3+ 16. Nxg3 Qxg3+ 17. Ke2 Ne4 18. Rf1 Qxh3 {0-1 (18) Kaytazki,L (1463)-Dimitrov,D (1917) ICCF 2016}) (10. Nf3 Bb4 11. Bd2 O-O 12. Rc1 Rb6 13. Qa4 Ne4 14. O-O Qb7 15. Be3 Ndf6 16. h3 Bxf3 17. exf3 Nxc3 18. bxc3 Bd6 19. Rfe1 Rc8 20. Bf1 h6 21. Qd1 Rbc6 {Maschietti,G (1977)-Lagergren,H (1923) ICCF 2019 0-1 (39)}) 10... Bf5 ( 10... Bb4 11. Kf1 O-O 12. Bh3 Bh5 13. a3 Bg6 14. e4 dxe4 15. Qe3 Bxc3 16. Qxc3 Qb7 17. Ne2 Rfc8 18. Qg3 Rc2 19. Ke1 Nd5 20. Bf1 N7f6 21. b4 Rbc8 22. Qb3 { Kaytazki,L (1434)-Dimitrov,D (2111) ICCF 2017 0-1 (29)}) 11. Qe3 Bd6 12. b3 ( 12. Nf3 h6 13. h3 O-O 14. Rg1 Rfc8 15. Bh1 Kh8 16. a3 Nh5 17. Nh4 Bh7 18. Qd2 Bh2 19. Rg4 Nb6 20. e3 Nc4 21. Qe2 Nf6 22. Rg2 Bd6 23. Nf3 Ne4 {Michas,J (1734) -Gross,M (2203) ICCF 2017 0-1 (39)}) 12... Bf4 13. Qf3 g5 14. Bxf4 gxf4 15. Rc1 e5 16. e4 Bxe4 17. Qh3 Bxg2 18. Qxg2 exd4 19. Nce2 Qa5+ 20. Kf1 Rg8 21. Qh3 Ne4 22. f3 Nd2+ 23. Kf2 Qb6 24. Ke1 d3 25. Rd1 Qe3 26. Rxd2 Rc8 27. Qf5 Rc1+ 28. Rd1 d2+ 29. Kf1 Rxd1# {0-1 (29) Michas,J (1813)-Moegito,A (2047) ICCF 2018 Irregular Openings}) 2. Bg2 (2. c4 Nc6 (2... d5 3. Nf3 e4 4. Nd4 Bc5 5. cxd5 Qxd5 6. Nb3 Bxf2+ 7. Kxf2 Bxg4 8. h3 Bh5 9. Bg2 Ne7 10. Nc3 Qf5+ 11. Ke1 Nbc6 12. Nxe4 O-O-O 13. d3 Rhe8 14. Rf1 {Domenche Redondo,F (1598)-Ojeda Maroto,I ICCF 2016 1-0 (25)}) (2... Nf6 3. e3 Ne4 4. Bg2 Ng5 5. Na3 c6 6. b4 Bxb4 7. Nc2 Ba5 {0-1 (7) Vánová,J-Uríková,M ICCF 2010}) 3. Nc3 Bb4 (3... Bc5 4. Bg2 Nge7 5. h3 O-O 6. d3 d6 7. Nf3 Ng6 8. Bg5 Nge7 9. Ne4 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 f5 12. gxf5 Bxf5 13. Nc3 Nd4 14. Nxd4 exd4 15. Nb5 {Domenche Redondo,F (1715)-De León López,A (1495) ICCF 2015 1-0 (37)}) (3... g5 4. h4 gxh4 5. d3 Bb4 6. Nf3 d6 7. g5 h3 8. Rb1 Nge7 9. a3 Ba5 10. b4 Bb6 11. Ne4 Bg4 12. Nf6+ Kf8 13. Nxg4 Nd4 14. e3 Nxf3+ 15. Qxf3 {Saitou,A (2246)-Saitou,T (1538) ICCF 2015 1-0}) 4. Nf3 d6 5. Nd5 Bxg4 6. Qb3 a5 7. Bg2 Bxf3 8. Qxf3 Bc5 9. Qg3 g6 10. d3 Nd4 11. Be3 Nc2+ 12. Kd2 Nxa1 13. Bxc5 Ne7 {Domenche Redondo,F (1926)-Aguilar Medina,J (1571) ICCF 2015 1-0 (30)}) (2. d3 d5 3. Bg2 (3. f3 Bc5 4. Nh3 Nc6 5. Bg5 Be7 6. Qd2 Bxg5 7. Nxg5 h6 8. Nh3 h5 9. Qg5 Qxg5 10. Kf2 hxg4 11. Nxg5 f6 12. fxg4 fxg5 13. Nc3 Nge7 14. Bg2 Bxg4 {Sherry,K-Lyons,A ICCF 2014 1/2}) (3. Nf3 Bd6 4. h3 Nc6 5. Bg2 f6 6. Bd2 d4 7. O-O g5 8. e3 Nge7 9. exd4 Nxd4 10. c3 Nxf3+ 11. Bxf3 Be6 12. c4 O-O 13. Qb3 c6 14. Nc3 Qb6 {Strelecky,R-Gunning,E ICCF 2014 1-0 (58)}) (3. h4 Bxg4 4. f3 Bf5 5. Nc3 d4 6. Nb5 c6 7. b3 cxb5 8. Bg2 Bc5 9. Bg5 Nf6 {0-1 (9) Milazzo,J-Tempesta,F ICCF 2018}) 3... Nc6 (3... Bxg4 4. c4 Bb4+ 5. Kf1 Bc5 6. h4 Qf6 7. Nf3 dxc4 8. Qa4+ Bd7 9. Qxc4 Bb6 10. Bg5 Qe6 11. Qxe6+ Bxe6 12. Nxe5 c6 13. Nc3 f6 14. Nxc6 Nxc6 15. Bf4 {Irlbacher,R (1802) -Phillips,P (1959) ICCF 2015 0-1 (35)}) 4. g5 Be6 5. a3 h6 6. e4 dxe4 7. Bxe4 hxg5 8. Bxc6+ bxc6 9. Nf3 f6 10. d4 g4 11. Ng1 Qd5 12. f3 exd4 13. Ne2 Qxf3 { Irlbacher,R (1848)-Rondio,T (2254) ICCF 2017 0-1}) (2. Nc3 d5 (2... d6 3. Nf3 Be6 4. h3 Nc6 5. d4 Nf6 6. d5 Bxd5 7. Nxd5 Nxd5 8. Qxd5 Nb4 9. Qb5+ Nc6 10. Bd2 a6 11. Qxb7 Ne7 12. O-O-O Rb8 13. Qxa6 Nd5 14. Qc6+ {Domenche Redondo,F (1789) -Sanchez Aguirregomezcorta,X (1297) ICCF 2017 1-0 (36)}) (2... h5 3. g5 d5 4. d4 Nc6 5. Nf3 e4 6. Nh4 Be7 7. Qd2 Be6 8. a3 Qd7 9. Bg2 Nf6 10. f4 g6 11. b3 O-O-O 12. Bb2 Ne8 13. O-O-O Nd6 14. Kb1 {Monteiro,U (1915)-Kempen,L (1948) ICCF 2013 0-1 (76)}) 3. Bh3 (3. e3 d4 4. exd4 exd4 5. Qe2+ Be6 6. Ne4 Nc6 7. Nc5 Bxc5 8. Bg2 Nf6 9. Bh3 d3 10. Qxd3 Qxd3 11. cxd3 Nxg4 12. Bxg4 Bxg4 13. b3 O-O-O 14. f3 Rhe8+ {Vaessen,J (1901)-Preussner,M (2005) ICCF 2016 0-1}) 3... Nf6 4. a3 g6 5. e3 Bg7 6. f4 exf4 7. exf4 O-O 8. Nge2 Bxg4 9. Bxg4 Ne4 10. Nxe4 Qh4+ {0-1 (10) Jokipii,G (1279)-Blanchard,A (1434) ICCF 2014}) (2. d4 Nc6 (2... e4 3. d5 Bc5 4. Nc3 e3 5. Bxe3 Bxe3 6. fxe3 Qh4+ 7. Kd2 Nf6 8. Nf3 Qxg4 9. Rg1 Ne4+ 10. Kc1 Nxc3 11. Qd3 Qb4 12. a3 Qc5 13. b4 Qxd5 14. Qxc3 {Domenche Redondo,F (1804)-Mancha Cerezuela,S ICCF 2019 1-0}) 3. d5 Nb4 4. a3 Na6 5. e4 d6 6. Bb5+ Bd7 7. Bxd7+ Qxd7 8. b4 c5 9. bxc5 Nxc5 10. f3 h6 11. Nc3 {1-0 (11) Irlbacher,R (1795)-Radzinski,S (1744) ICCF 2017}) (2. e4 Bc5 3. Nf3 d6 4. h3 Nc6 5. Bg2 Nf6 6. Nc3 Bb4 7. d3 Bxc3+ 8. bxc3 O-O 9. O-O d5 10. Bg5 dxe4 11. Bxf6 Qxf6 12. dxe4 Rd8 13. Qe2 h6 {Monteiro,A-Graça,J ICCF 2009 1-0 (44)}) 2... d5 (2... h5 3. gxh5 (3. d4 d5 (3... hxg4 4. dxe5 Nc6 5. Bf4 Nge7 6. Be4 Rh5 7. h3 Nxe5 8. Bxe5 Rxe5 9. Qd4 d6 10. Nd2 f5 11. Bg2 Nc6 12. Bxc6+ bxc6 13. hxg4 fxg4 14. f3 c5 15. Qd3 {Fric,P (2149)-Grobler,D (1816) ICCF 2008 1/2 (59)}) 4. dxe5 hxg4 5. Bxd5 Bb4+ 6. c3 Ne7 7. Qa4+ Nbc6 8. Bxc6+ Nxc6 9. cxb4 Qd5 10. f3 g3 11. h4 Qxe5 12. b5 g2 13. Rh3 Bxh3 14. bxc6 Qg3+ {Monteiro,R (2171)-Shield, A ICCF 2007 0-1 (25)}) 3... Nc6 4. Nc3 Nf6 5. d3 Rxh5 6. e4 Bb4 7. h4 d6 8. Bg5 Rh8 9. a3 Ba5 10. b4 Bb6 11. h5 Nd4 12. Nd5 Ne6 13. Bxf6 gxf6 14. Ne2 {Ohtake, S (2385)-Gibbons,R (2363) ICCF 2014 1-0 (37)}) (2... Nc6 3. Nc3 (3. c4 h5 4. gxh5 Qh4 (4... Rxh5 5. Bf3 Rh8 6. Nc3 Nf6 7. e3 Bc5 8. Ne4 Nxe4 9. Bxe4 d6 10. b3 Be6 11. Qf3 Qd7 12. Qg3 O-O-O 13. Qg2 d5 14. cxd5 Bxd5 15. Bb2 Bxe4 16. f3 { Kaytazki,L (2002)-Stallinga,H (2044) ICCF 2008 0-1}) 5. d3 Bc5 6. e3 d6 7. Nc3 Nf6 8. Nd5 Nxd5 9. cxd5 Ne7 10. Ne2 Qxh5 11. Ng3 Qh4 12. Bd2 Bh3 13. Bxh3 Qxh3 14. Qa4+ Qd7 {Vorontsov,G (1990)-Rozhnev,I (2193) ICCF 2017 0-1 (71)}) 3... g6 (3... Qh4 4. h3 d6 5. Nf3 Qf6 6. d4 Bd7 7. Be3 O-O-O 8. Bg5 Qg6 9. Bxd8 Kxd8 10. dxe5 Nb4 11. e4 dxe5 12. Nxe5 Qd6 13. Nxf7+ Kc8 14. Nxd6+ Bxd6 15. a3 { Michas,J (1803)-Haws,A ICCF 2017 1-0 (27)}) 4. d3 Bg7 5. e4 Nge7 6. h4 b6 7. h5 h6 8. g5 Ng8 9. hxg6 fxg6 10. Nf3 h5 11. Nh4 Nge7 12. Nd5 Bb7 13. Nf6+ Kf7 14. f4 {Nicotera,A (1983)-Günther,R (1372) ICCF 2020 1-0 (25)}) (2... c6 3. d4 exd4 4. Qxd4 d5 5. Nc3 Qf6 6. Qxf6 Nxf6 7. g5 Nfd7 8. Nf3 Bd6 9. e4 dxe4 10. Nxe4 Bc7 11. Be3 Ne5 12. Nxe5 Bxe5 13. O-O-O O-O 14. Ng3 {Eraclides,G-Zimmermann,J (1636) ICCF 2008 1-0 (55)}) (2... Bc5 3. Nc3 Nc6 4. Nf3 d5 5. d3 f6 6. g5 Be6 7. a3 a6 8. b4 Ba7 9. Bd2 Qd7 10. b5 axb5 11. Nxb5 Bb6 12. a4 Nge7 13. O-O O-O 14. gxf6 {Hasidume,S (2207)-Önem,C (2283) ICCF 2007 0-1}) (2... Ne7 3. h3 d5 4. c4 g6 5. cxd5 Nxd5 6. Bxd5 Qxd5 7. f3 Be7 8. h4 Nd7 9. Nc3 Qe6 10. d3 b6 11. Ne4 h6 12. h5 Bb7 13. Qc2 O-O-O 14. hxg6 {Fernandez,Q (1455)-Law,K ICCF 2019 1/ 2}) 3. c4 (3. d4 exd4 4. Qxd4 Be6 5. Nc3 (5. Nf3 Nc6 6. Qa4 Qd7 7. Nc3 a6 8. Bf4 Bb4 9. O-O Bxc3 10. bxc3 b5 11. Qb3 Nge7 12. a4 O-O 13. axb5 axb5 14. h3 Rxa1 15. Rxa1 Rb8 16. Nd4 Nxd4 {Polchowski,T-Jakobi,W (1499) ICCF 2020 1-0 (29) }) 5... Nc6 6. Qd3 Nb4 7. Qd1 d4 8. Ne4 Bxg4 9. a3 Nc6 10. Bf4 Nge7 11. Qd3 Ng6 12. Bg3 Qd7 13. O-O-O f6 14. Nf3 O-O-O {Thoma,O (2177)-Gool,J (2040) ICCF 2010 1/2 (52)}) (3. e4 d4 4. d3 Qh4 5. h3 Qd8 6. Bd2 c5 7. Qc1 Bd6 8. c3 Nc6 9. Nf3 Nge7 10. Na3 Qd7 11. Qc2 a6 12. Nc4 Ng6 13. Nb6 Qd8 14. Nxa8 Bd7 {Kaytazki,L (1421)-Otero Cabrera,E (1912) ICCF 2019 1-0 (37)}) (3. h3 e4 4. a3 Bc5 5. e3 Qh4 6. c3 Nf6 7. g5 Nh5 8. Qb3 Be6 9. Qxb7 O-O 10. Qxa8 Nd7 11. Qc6 Qxg5 12. Bf1 Bd6 13. Qa6 d4 14. Qxa7 Ng3 {Marpaung,N-Muñoz,J ICCF 2019 0-1}) 3... c6 ( 3... dxc4 4. Qa4+ c6 (4... Bd7 5. Qxc4 Nc6 6. d3 Bd6 7. Nf3 Nge7 8. Nc3 Be6 9. Qe4 Qd7 10. h3 O-O-O 11. Ng5 f5 12. gxf5 Bxf5 13. Qa4 Kb8 14. Nf7 Rhf8 15. Nxd8 Rxd8 16. Bg5 {Michas,J (1789)-Croker,B (1800) ICCF 2018 1-0 (54)}) 5. Qxc4 Be6 6. Qd3 (6. Qe4 Nf6 7. Qa4 Nxg4 8. h3 Nf6 9. Nc3 Qb6 10. Qc2 Bd6 11. d3 O-O 12. Bg5 Be7 13. Bxf6 Bxf6 14. Ne4 Be7 15. a3 Nd7 16. h4 Qa5+ 17. Kf1 f5 {Kaytazki, L (1488)-Golemanov,B (1868) ICCF 2015 1-0 (50)}) 6... Qxd3 7. exd3 Nf6 8. h3 Na6 9. Nc3 Nb4 10. Kd1 Nxd3 11. Ke2 Bc4 12. Ke3 Bc5+ 13. Kf3 Nxf2 14. Rh2 O-O 15. Na4 {Fernandez,Q (1455)-Tarrant,J (1657) ICCF 2019 1-0 (29)}) (3... Bxg4 4. cxd5 Nf6 5. Qb3 (5. d4 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 Nxd5 8. Nc3 c6 9. Bxd5 cxd5 10. dxe5 d4 11. Nb5 Nc6 12. h3 Bf5 13. Nd6+ Kf8 14. Nxf5 Qd5 15. Nf3 Nxe5 16. Qb4+ {1-0 (16) Michas,J (1717)-de Wit,W (1744) ICCF 2017}) 5... Nbd7 6. Nc3 Bc5 7. Nf3 O-O 8. Qxb7 e4 9. Ng5 Rb8 10. Qc6 Rb6 11. Qa4 Rb4 12. Qc2 Re8 13. Ngxe4 Nxe4 14. Nxe4 Qh4 15. d3 {Domenche Redondo,F (1715)-Armenteros Generoso,P (1724) ICCF 2015 0-1 (38)}) (3... d4 4. d3 (4. Qb3 c6 5. d3 Be7 6. Nf3 Nd7 7. Bg5 f6 8. Bd2 Nb6 9. g5 fxg5 10. Nxe5 Qc7 11. c5 Nd5 12. Bxd5 cxd5 13. Qxd5 Nh6 14. h4 Qxc5 15. Qxc5 Bxc5 {Fernandez,Q-Jokipii,G (1295) ICCF 2015 1/2 (26)}) 4... c6 (4... Bxg4 5. Bxb7 Nd7 6. Bxa8 Qxa8 7. Nf3 Bxf3 8. exf3 Bb4+ 9. Bd2 Bxd2+ 10. Nxd2 Nc5 11. Qc2 Ne7 12. Ne4 Ne6 13. Qa4+ Nc6 14. b4 O-O 15. Rg1 Kh8 16. b5 {Fernandez,Q (1455)-Pettigrew,S (1475) ICCF 2019 0-1 (33)}) 5. h3 Bc5 6. Nf3 Nd7 7. e3 Ngf6 8. exd4 exd4 9. Qe2+ Qe7 10. Qxe7+ Bxe7 11. Nxd4 Ne5 12. Ke2 O-O 13. Nc3 Rd8 14. Be3 Bc5 15. Nxc6 {Dijk,J (1805)-Pope,P (1856) ICCF 2019 1-0 (29)}) (3... e4 4. cxd5 c6 5. d3 f5 6. gxf5 Bxf5 7. dxe4 Bg6 8. Nc3 Bd6 9. Nf3 Qf6 10. Bg5 Qf8 11. e5 Bb4 12. d6 Bxc3+ 13. bxc3 Nd7 14. e6 Bf5 15. Qb3 { Domenche Redondo,F (1715)-De León López,A (1495) ICCF 2015 1-0}) 4. cxd5 cxd5 5. Qb3 Ne7 (5... Nf6 6. g5 Ne4 7. d3 Nxg5 8. Bxd5 Ne6 9. Nc3 Nc6 10. Bxc6+ bxc6 11. Qa4 Bb7 12. Nf3 Bd6 13. Ne4 Bc7 14. Rg1 O-O 15. Bh6 Kh8 16. Nc5 gxh6 17. Nxb7 {Michas,J (1698)-Hughes,D (1729) ICCF 2016 1-0 (32)}) 6. Nc3 Nbc6 (6... e4 7. d3 Nbc6 8. dxe4 d4 9. Nd5 Nxd5 10. exd5 Qa5+ 11. Bd2 Bb4 12. Rd1 Bxd2+ 13. Rxd2 Ne7 14. d6 Nc6 15. Bxc6+ bxc6 16. Nf3 Be6 17. Qc2 c5 18. Nxd4 {Galván, C-Paredes,J ICCF 2013 1-0 (28)}) 7. Nxd5 (7. h3 Nd4 8. Qd1 Be6 9. Nf3 Ndc6 10. d3 Ng6 11. e4 dxe4 12. dxe4 Bb4 13. O-O O-O 14. Be3 Qa5 15. Bd2 Rfd8 16. Qc2 Nd4 17. Nxd4 exd4 18. Nb1 Rac8 {Michas,J (1638)-Hughes,D (1693) ICCF 2015 0-1}) 7... Nd4 8. Qc4 Nxd5 9. Bxd5 Be6 10. Bxe6 fxe6 11. e3 Rc8 12. Qxc8 Qxc8 { Kaytazki,L (1487)-Owens,J (1410) ICCF 2014 0-1}) (1. b3 d5 2. g3 (2. Bb2 c5 ( 2... c6 3. g3 Nf6 4. Bg2 Bg4 (4... Bf5 5. d3 Nbd7 6. Nd2 e5 7. Ngf3 Bc5 8. O-O Qc7 9. e4 dxe4 10. dxe4 Be6 11. a4 O-O 12. Qe2 Rfe8 13. Nc4 Bg4 14. h3 Bh5 15. a5 Rab8 16. Qe1 {Robeille,J (2073)-Deforel,J (1961) ICCF 2018 1/2}) (4... Qd6 5. a4 Bf5 6. Ba3 Qc7 7. h4 Nbd7 8. Nh3 e5 9. Bb2 Bc5 10. Na3 O-O 11. O-O Nh5 12. e3 Ndf6 13. d3 Rfe8 14. Rc1 Qd6 15. c4 Bxa3 16. Bxa3 {Reid,W (1294)-Arnaud, M ICCF 2019 1-0 (35)}) 5. d3 e6 6. Nd2 Nbd7 7. h3 Bh5 8. Ngf3 Qa5 9. Qc1 Bd6 10. O-O O-O 11. g4 Bg6 12. Nh4 Qd8 13. Nxg6 fxg6 14. Nf3 {Kaczmarek,R (2012) -Dahm,W (2079) ICCF 2019 1/2 (30)}) 3. Nf3 Nc6 4. g3 Nf6 5. Bg2 g6 6. O-O Bg7 7. Nc3 O-O 8. d3 (8. Na4 Qd6 {Coope,D (1784)-Abdulmanov,E (2262) ICCF 2018}) 8... e5 9. Na4 e4 10. dxe4 dxe4 11. Qxd8 Rxd8 12. Ng5 Bf5 13. Rae1 Rd2 { Coope,D (1935)-Chunga,J (1913) ICCF 2016 1/2 (50)}) 2... e5 (2... e6 3. Bb2 c5 4. Bg2 Nc6 5. h4 f6 6. a4 Bd6 7. Nh3 Nge7 8. Na3 O-O 9. f4 e5 10. e3 Be6 11. O-O Qd7 12. c4 Bxh3 13. Bxh3 Qxh3 14. Kf2 {Reid,W (1268)-Stoll,W ICCF 2020 0-1 (46)}) 3. Bg2 (3. Nf3 e4 4. Nd4 c5 5. Nc3 cxd4 6. Nb1 Nc6 7. h4 Nf6 8. Bb2 e3 9. dxe3 dxe3 10. fxe3 Bb4+ 11. Nd2 Qe7 12. a4 Qxe3 13. c3 Qxg3# {0-1 (13) Gorlevsky,A-Roy Laguens,A (1947) ICCF 2011}) 3... Nf6 (3... g6 4. Bb2 Bg7 5. Nf3 Nc6 6. d3 Nge7 7. O-O O-O 8. Qc1 Bg4 9. c4 d4 10. Nbd2 a5 11. Re1 Bh6 12. Qd1 Qd7 13. Qc2 Nb4 14. Qd1 f6 15. Ne4 {Coope,D (2059)-Azzi,R (1870) ICCF 2012 1-0 (35)}) (3... Be6 4. Bb2 Nd7 5. d3 Ngf6 6. Nf3 Bd6 7. O-O O-O 8. Nbd2 c6 9. c4 Qe7 10. Qc2 h6 11. cxd5 cxd5 12. Rac1 Rfd8 13. Rfe1 a5 14. e4 d4 15. Nc4 { Coope,D (2041)-Köhl,R (2294) ICCF 2012 0-1 (50)}) (3... e4 4. Bb2 Nc6 5. f3 f5 6. e3 Nf6 7. Ne2 Bc5 8. Bxf6 Qxf6 9. Nbc3 O-O 10. O-O Be6 11. fxe4 dxe4 12. Na4 Bd6 13. Nf4 Bd7 14. Nc3 Bxf4 15. Rxf4 {Molia,L-Glover,V (1777) ICCF 2012 1-0 (26)}) (3... Bc5 4. Kf1 Nf6 5. Bb2 Nc6 6. Bxe5 Nxe5 7. d4 Bb6 8. dxe5 Ng4 9. Qxd5 Qxd5 10. Bxd5 O-O 11. Nh3 c6 12. Bg2 Nxe5 13. Ke1 Bf5 14. Kd1 Ng4 15. Kc1 {Kazantsev,R (2428)-Trofimov,V (2422) ICCF 2018 1-0 (63)}) 4. Bb2 (4. d3 Bd6 ( 4... c5 5. Bb2 Nc6 6. Nf3 Bd6 7. O-O O-O 8. Na3 {1-0 (8) Coope,D (2111)-Wolff, N ICCF 2011} a6 9. e3 Bg4 10. h3 Be6 11. Qe2 Qc8 12. Kh2 h6 13. c3 b5 14. Nc2 Qb7 15. e4 dxe4 16. dxe4 {Coope,D (2111)-Geiser,A (2107) ICCF 2011 1/2 (52)}) 5. Nf3 O-O 6. O-O h6 7. Nbd2 e4 8. dxe4 dxe4 9. Nd4 Bxg3 10. Bb2 Be5 11. Nc4 Bxh2+ 12. Kxh2 Ng4+ 13. Kg3 f5 14. f4 exf3 15. Bxf3 f4+ {Coope,D (1939) -Achermann,J (2153) ICCF 2014 0-1 (40)}) (4. f3 Bf5 5. Bb2 Bd6 6. e3 {1-0 (6) Ipekyilmaz,E (1476)-Domagalski,F ICCF 2015}) (4. Kf1 Bd6 5. Bb2 c5 (5... c6 6. d3 O-O 7. e3 a5 8. a4 Bg4 9. Bf3 Bf5 10. h3 Na6 11. g4 Be6 12. Kg2 e4 13. Be2 Qe7 14. Nd2 Rad8 15. Rc1 Ne8 16. Qe1 Kh8 17. dxe4 {Kazantsev,R (2428)-Nekhaev, A (2495) ICCF 2018 1-0 (40)}) (5... Be6 6. d3 O-O 7. Nd2 h6 8. Bh3 Ng4 9. e4 Qd7 10. Bg2 Bc5 11. exd5 Bxd5 12. d4 Bxg2+ 13. Kxg2 Bxd4 14. Bxd4 Qxd4 15. Nh3 Qd5+ 16. Qf3 Qxf3+ 17. Kxf3 {Kazantsev,R (2428)-Neborak,Y (2306) ICCF 2018 0-1 (63)}) 6. d3 O-O 7. Nd2 Nc6 8. e4 Bg4 9. Qe1 Nd4 10. Qb1 dxe4 11. dxe4 b5 12. c3 Ne6 13. Bf3 Bc7 14. Ke2 Qd7 {Kazantsev,R (2428)-Matyukhin,S (2505) ICCF 2018 0-1 (44)}) 4... Bd6 (4... c5 5. Bxe5 Nc6 6. Bxf6 Qxf6 7. Nc3 d4 8. Nd5 Qd6 9. c4 Be6 10. Nh3 Be7 11. O-O Bxd5 12. cxd5 Nb4 13. Nf4 O-O 14. a3 Na6 15. Rc1 b6 16. e4 {Coope,D (1939)-Harðarson,G (2100) ICCF 2014 1-0 (35)}) 5. d3 (5. Nc3 c6 (5... Be6 6. e3 O-O {0-1 (6) Sexton,D-Liesenberg,M ICCF 2007}) 6. d3 a5 7. Nf3 O-O 8. O-O Re8 9. Qd2 h6 10. Rad1 b5 11. Rfe1 Be6 12. Nh4 a4 13. Nf3 axb3 14. axb3 Bb4 15. d4 e4 16. Ne5 Ra2 {Coope,D (2030)-Fedukin,A (2224) ICCF 2012 0-1 (50)}) (5. f3 Nc6 6. e3 O-O 7. f4 exf4 8. gxf4 Bg4 9. Nf3 Qe8 10. Kf1 Qe6 11. h3 Bh5 12. Qe1 Rfe8 13. Qg3 Bg6 14. Ng5 Qf5 15. h4 Nh5 16. Qf3 Qxc2 { Ipekyilmaz,E (1533)-Risdon,A (1927) ICCF 2013 0-1}) (5. Nf3 e4 6. Nd4 c5 7. Nb5 Be7 8. Be5 O-O 9. O-O Nc6 10. Bb2 a6 11. N5c3 h5 12. f3 exf3 13. exf3 h4 14. g4 d4 15. Ne2 Nd5 16. Kh1 h3 {Azzi,R (1614)-Fonseca,P (2221) ICCF 2015 0-1 (27)}) 5... O-O (5... c5 6. e4 d4 7. Nd2 Nc6 8. Ne2 Be6 9. c3 O-O 10. O-O Be7 11. Nf3 Nd7 12. Nd2 b5 13. f4 f6 14. c4 Nb4 15. Nf3 a6 16. f5 Bf7 17. Bc1 {Setyo Adi,N (2214)-Salomo,A (2169) ICCF 2020 1/2}) 6. Nd2 (6. Nf3 Re8 7. Nbd2 h6 (7... c5 8. O-O Nc6 9. Re1 h6 10. c4 d4 11. a3 Be6 12. Qc2 Qd7 13. e3 Bf5 14. Nh4 Bh7 15. e4 Bc7 16. Rac1 Ba5 17. Qd1 Rac8 18. Rc2 a6 19. Qf3 {Coope,D (1950)-Bars,J (2334) ICCF 2014 0-1 (63)}) 8. O-O c5 9. Nh4 Nc6 10. c4 d4 11. Ne4 Nxe4 12. Bxe4 Bh3 13. Re1 Qd7 14. a3 Ne7 15. Bh1 a6 16. Rb1 Rad8 17. Qc2 Nc6 {Coope,D (1950)-Strömberg,H (2263) ICCF 2014 0-1 (44)}) (6. c4 c6 7. a3 Re8 8. Qc2 Nbd7 9. Nf3 e4 {0-1 (9) Gilberd,G-Dragulescu,N (1939) ICCF 2008}) 6... a5 (6... Nc6 7. Ngf3 Re8 8. O-O Bg4 9. c4 d4 10. a3 a5 11. Qc2 Bc5 12. Rfe1 h6 13. Ne4 Nxe4 14. dxe4 Qf6 15. Reb1 Red8 16. Rd1 Rd6 17. Qd3 Qd8 18. h3 {Coope,D (2111) -Piccoli,F (2080) ICCF 2011 0-1 (36)}) (6... Qe7 7. Ngf3 c5 (7... Rd8 8. O-O Nc6 (8... a5 9. c4 d4 10. Ng5 a4 11. bxa4 h6 12. Nge4 Nxe4 13. Nxe4 Bb4 14. a3 Ba5 15. Nd2 Na6 16. Nb3 Nc5 17. Nxc5 Qxc5 18. Rb1 c6 19. Bc1 Bc7 20. Bd2 { Coope,D (1939)-Ventura Monfort,S (2238) ICCF 2013 1/2 (38)}) 9. c4 e4 10. Nd4 Nxd4 11. Bxd4 Bg4 12. dxe4 dxe4 13. Qc2 Bxe2 14. Nxe4 Bxf1 15. Nxf6+ gxf6 16. Rxf1 Bxg3 17. Bxb7 Rxd4 18. Bxa8 Be5 19. Qf5 {Coope,D (2041)-Grabowski,B (2058) ICCF 2012 1/2 (76)}) (7... e4 8. dxe4 dxe4 9. Nd4 Rd8 10. Nc4 c5 11. Nb5 Be5 12. Qxd8+ Qxd8 13. Bxe5 Ne8 14. Bxe4 Nc6 15. Bxc6 bxc6 {Coope,D (2111) -Petersons,I (2253) ICCF 2011 0-1 (63)}) 8. O-O Nc6 9. Re1 h6 10. Nh4 Bc7 11. Qc1 Be6 12. c4 d4 13. Ne4 Nd7 14. Nd2 g5 15. Nhf3 f5 16. a3 a5 17. Qc2 Qf7 18. Rf1 {Coope,D (2059)-Macayo,R (2403) ICCF 2012 0-1 (40)}) 7. Ngf3 Qe7 8. O-O a4 9. bxa4 Bd7 10. Re1 e4 11. dxe4 dxe4 12. Bxf6 gxf6 {Coope,D (2059)-Fediv,A (2061) ICCF 2012 0-1 (31)}) (1. c3 Nf6 (1... e5 2. d3 (2. Nf3 e4 3. Nd4 c5 ( 3... d5 4. d3 (4. g4 c5 5. Nb5 Bxg4 6. h3 Bf5 7. f4 Qh4# {0-1 (7) Spiliopoulos, V-Fremmegaard,J (1856) ICCF 2016}) 4... exd3 5. Qxd3 c5 6. Nf3 Nf6 7. Bg5 Be6 8. e3 Nc6 9. Be2 h6 10. Bh4 g5 11. Bg3 Ne4 12. Ne5 c4 13. Nxc6 bxc6 14. Qd4 Rh7 15. Qd1 {Hebels,A (2409)-Keuter,K (2461) ICCF 2014 0-1 (40)}) 4. Nb3 d5 (4... Nf6 5. d3 exd3 6. exd3 d5 7. Be2 Bd6 8. Bg5 Bf5 9. Na3 Nbd7 10. O-O O-O 11. Bf3 h6 12. Bxf6 Nxf6 13. Nc2 Be6 14. Ne3 b6 15. a4 Re8 16. Re1 {Hebels,A (2422) -Leroy,J (2411) ICCF 2011 1/2 (42)}) 5. d4 c4 6. Nc5 Nf6 7. e3 b6 8. Qa4+ Ke7 9. Qb4 bxc5 10. Qxc5+ Ke8 11. Qb5+ Bd7 12. Qb7 Bc6 13. Qxa8 Bxa8 {Prikryl,V (1640)-Portych,V (2093) ICCF 2016 0-1 (39)}) (2. e3 a6 (2... Nc6 3. d4 d5 4. Bb5 Qg5 5. g3 e4 6. Bxc6+ bxc6 7. Nh3 Bxh3 8. f4 Qh6 9. Qa4 Ne7 10. Qb4 Bg2 11. Rg1 Qxh2 {0-1 (11) Kamarow,Y-Thys,H (1838) ICCF 2017}) (2... c5 3. g3 d5 4. Bb5+ Nc6 5. Bd3 Bd6 6. g4 Nge7 7. Nf3 e4 8. Be2 exf3 9. Bxf3 O-O 10. e4 Bf4 11. exd5 Nxd5 12. O-O Qh4 13. Kg2 Qxh2# {0-1 (13) Whittle,P (1327)-Dolzhikov,A (1808) ICCF 2018}) 3. Qe2 d5 4. d4 e4 5. g3 Nf6 6. Nh3 Bg4 7. Qc2 Bxh3 8. Bxh3 Nbd7 9. b4 b5 10. f4 Nb6 11. O-O Be7 12. f5 O-O 13. a4 Nxa4 {Symonds Patel, J-Döring,J ICCF 2020 0-1}) (2. b3 d5 3. d3 Nf6 4. e3 Nc6 5. h3 Be7 6. Nf3 O-O 7. Bd2 e4 8. Ng5 h6 9. Be2 exd3 10. Bxd3 hxg5 11. O-O Ne5 12. f4 Nxd3 13. fxg5 Ne4 {Johansson,R (1666)-Salonen,J (1896) ICCF 2011 0-1}) (2. g3 f5 3. d3 d5 4. d4 e4 5. h4 Nf6 6. Bg5 Be6 7. e3 Nbd7 8. Nh3 Bd6 9. Nf4 Bf7 10. c4 dxc4 11. Qa4 b5 12. Qxb5 Rb8 13. Qa4 Rxb2 {Fortin,M (1655)-Nikel,R ICCF 2010 0-1 (37)}) 2... d5 (2... Nc6 3. Nd2 (3. g3 Be7 4. Bg2 d6 5. e4 h5 6. Be3 h4 7. Na3 hxg3 8. hxg3 Rxh1 9. Bxh1 Be6 10. c4 Nf6 11. Nc2 Qd7 12. Qd2 Ng4 13. O-O-O Nxe3 14. Qxe3 a6 {Ramos Mora,J (1791)-Wilshusen,H (1572) ICCF 2017 0-1}) 3... Nf6 4. Qc2 Be7 5. Ngf3 d6 6. e4 Bd7 7. a4 a5 8. Nc4 O-O 9. Be2 Be6 10. O-O d5 11. Ncxe5 Bd6 12. Nxc6 {Sinsuat,D-Luz,D ICCF 2020}) (2... f5 3. d4 e4 4. c4 Nf6 5. Nh3 Bb4+ 6. Bd2 Qe7 7. e3 Nc6 8. a3 Bxd2+ 9. Qxd2 d6 10. Be2 O-O 11. Nc3 Na5 12. Nd5 Nxd5 13. Qxa5 Nf6 14. Nf4 {Ramos Mora,J (1719)-Touriño Muxi,J (1758) ICCF 2019 1/2 (27)}) 3. d4 (3. e4 dxe4 (3... Nf6 4. Nd2 c5 5. g3 Nc6 6. Bg2 d4 7. c4 Be7 8. Ne2 h5 9. Nf3 Nh7 10. h3 a6 11. O-O h4 12. Kh1 Be6 13. g4 Nf8 14. Nh2 g5 15. Bd2 {Ramos Mora,J (1791)-Szymanski,P (2093) ICCF 2017 0-1 (30)}) 4. dxe4 Qxd1+ (4... Nf6 5. Qxd8+ Kxd8 6. Bg5 Be7 7. Nd2 h6 8. Bh4 Be6 9. f3 Nbd7 10. Bc4 Bxc4 11. Nxc4 g5 12. Bg3 Bf8 13. O-O-O Bd6 14. Nxe5 Ke7 15. Nxd7 Nxd7 16. Bxd6+ { Ramos Mora,J (1699)-Fariñas Lucas,J (1624) ICCF 2020 1-0 (32)}) 5. Kxd1 Bc5 6. f3 Be6 7. Nd2 Nc6 8. Bc4 Bxc4 9. Nxc4 O-O-O+ 10. Kc2 Nf6 11. Be3 Nd7 12. Nh3 f6 13. Nf2 a5 14. Nd3 Bxe3 {Ramos Mora,J (1719)-Domenche Redondo,F (1804) ICCF 2019 0-1 (37)}) (3. Qc2 c5 (3... f5 4. e4 c6 5. Nf3 Bd6 6. Bg5 Be7 7. Bxe7 Qxe7 8. Be2 Nf6 9. Nbd2 fxe4 10. dxe4 dxe4 11. Nxe4 Bf5 12. Bd3 Nxe4 13. Bxe4 Bxe4 14. Qxe4 Nd7 15. O-O {Hendri Sevano,R-Ward,B (1687) ICCF 2016 1-0}) (3... Nf6 4. Bg5 Be7 5. Nd2 Bf5 6. e4 Bg6 7. Ngf3 Nbd7 8. Be2 O-O 9. O-O Rc8 10. Rfe1 c5 11. Bxf6 Bxf6 12. exd5 c4 13. Ne4 Nb6 14. b3 Nxd5 15. bxc4 {Hendri Sevano, R-Heino,J (1522) ICCF 2016 1-0 (36)}) 4. e4 Nc6 5. Nf3 Nf6 6. Bg5 Be7 7. Nbd2 h6 8. Bh4 O-O 9. Be2 Be6 10. O-O Qc7 11. Rfe1 Rfd8 12. a3 Rac8 13. Bf1 a6 14. exd5 Nxd5 {Hendri Sevano,R-Jee,K (2035) ICCF 2017 0-1 (95)}) (3. a3 Nf6 4. g3 Be6 5. e3 a5 6. Nf3 Bd6 7. Qa4+ Nbd7 8. b3 Bg4 9. Nfd2 O-O 10. b4 axb4 11. Qb3 Nc5 12. Qxb4 Nxd3+ 13. Bxd3 Bxb4 14. cxb4 Bh3 {Cottrell,J-Pascoal,J (2142) ICCF 2016 0-1}) (3. e3 Nf6 4. f4 (4. a4 Bd6 5. Nh3 O-O 6. Qh5 Nxh5 7. Nd2 Nc6 8. Be2 Bxh3 {0-1 (8) Vrachnis,A-García Rodríguez,A ICCF 2016}) 4... Nc6 5. Nf3 Bd6 6. Be2 Bf5 7. d4 exf4 8. exf4 Qe7 9. O-O O-O 10. Re1 a6 11. Bd3 Qd7 12. Na3 Rfe8 13. Bd2 Bxd3 14. Be3 Be4 {Ugrinovskiy,G-Kamman,E ICCF 2013 0-1 (28)}) (3. Nf3 Nc6 4. e4 (4. b4 a6 5. Qa4 Bd6 6. b5 Nce7 7. bxa6+ c6 8. Ba3 Rxa6 9. Qb3 Rb6 10. Qa4 Nf6 11. g4 Bxg4 12. Nfd2 O-O 13. Rg1 Be6 14. Nf3 Ra6 15. Qb3 d4 { Vaessen,J (1143)-Velthuis,P ICCF 2020 0-1}) 4... dxe4 5. dxe4 Qxd1+ 6. Kxd1 Bc5 7. Ke1 Nf6 8. Bd3 Be6 9. Nbd2 Rd8 10. Bc2 O-O 11. h3 a5 12. Nf1 b5 13. Be3 Nd7 14. Ng5 Bc4 {Kostanjsek,Z (2264)-Menéndez Rodríguez,G (2202) ICCF 2014 1/2 (39) }) 3... exd4 (3... Nc6 4. dxe5 Nxe5 5. Nf3 Nxf3+ 6. exf3 Nf6 7. Bd3 (7. Bb5+ c6 8. Bd3 Bd6 9. Qe2+ Be6 10. Be3 O-O 11. Nd2 Nh5 12. g3 Bh3 13. Nb3 Qc8 14. Rg1 c5 15. Bc2 a5 16. Nd2 Qc6 17. Qd3 g6 18. Qe2 b5 {Ipekyilmaz,E (1686)-Struzka,V (2025) ICCF 2018 0-1 (58)}) 7... Bd6 8. Bg5 Qe7+ 9. Qe2 Qxe2+ 10. Bxe2 Be6 11. Bxf6 gxf6 12. Na3 c6 13. Nc2 Kd7 14. Nd4 c5 15. Nxe6 {Ipekyilmaz,E (1700) -Cabrera Trujillo,C (1665) ICCF 2018 1/2 (66)}) (3... e4 4. f3 (4. Bf4 Nf6 5. e3 Be7 6. c4 Nc6 7. Nc3 O-O 8. Bg5 Be6 9. Bxf6 Bxf6 10. cxd5 Bxd5 11. Nge2 Re8 12. Rc1 g6 13. a3 Rb8 14. Qc2 Ne7 15. Nxe4 Bxe4 {Risdon,A-Wingo,M (1604) ICCF 2007 0-1 (47)}) 4... Bd6 5. fxe4 Qh4+ 6. g3 Bxg3+ 7. hxg3 Qxh1 8. Be3 dxe4 9. c4 Nf6 10. Nc3 O-O 11. d5 Ng4 12. Qd2 Re8 13. Nb5 Na6 14. Qc3 Rd8 15. a3 { Ipekyilmaz,E (1686)-TeVrucht,R ICCF 2018 1-0 (27)}) 4. cxd4 Bb4+ (4... Nf6 5. Nf3 Bd6 6. Nc3 O-O 7. e3 Bf5 8. Bd3 Bxd3 9. Qxd3 c6 10. Nh4 Nbd7 11. Nf5 Bc7 12. Bd2 g6 13. Ng3 Re8 14. Nge2 Nb6 15. b3 Nc8 16. f3 {Ipekyilmaz,E (1686) -Flecher,J (1873) ICCF 2018 0-1 (71)}) 5. Bd2 Bxd2+ 6. Nxd2 Nf6 7. e3 O-O 8. Bd3 b6 9. Ngf3 Bg4 10. Qc2 Nbd7 11. Qc6 Re8 12. Rc1 Rc8 13. h3 {Ipekyilmaz,E (1686)-Bellisario,C (1392) ICCF 2018 1/2 (32)}) (1... d5 2. c4 (2. h4 e5 3. g3 Nc6 (3... e4 4. e3 Nf6 5. d4 c6 6. Bh3 Bd6 7. Bxc8 Qxc8 8. Qe2 O-O 9. Nd2 Na6 10. Nb3 Qc7 11. Bd2 Nd7 12. Nh3 Nb6 13. Nf4 Nc4 14. O-O-O Qe7 15. Be1 {Brown,F (1881)-Sharma,H ICCF 2012 1-0 (29)}) 4. Bg2 Nf6 5. e3 Bg4 6. Qc2 Bc5 7. f3 Be6 8. Ne2 O-O 9. d4 exd4 10. exd4 Bb6 11. Bf4 Qd7 12. Na3 Bf5 13. Qd2 Rfe8 { Brown,F (1881)-Ramos,C (1589) ICCF 2012 1-0 (26)}) (2. e3 e5 3. Qa4+ (3. Bb5+ c6 4. Bd3 Bd6 5. Nf3 e4 6. Be2 exf3 7. gxf3 Be6 8. Rg1 g6 9. f4 Ne7 10. b4 Nd7 11. d4 Qc7 12. b5 f5 13. a4 Kf7 14. h4 h5 {Whittle,P (1327)-Jakobi,W (1597) ICCF 2018 0-1 (34)}) (3. d4 Nd7 4. Nh3 Ngf6 5. Bd3 Bd6 6. O-O e4 7. Bb5 c6 8. Be2 Nb6 {0-1 (8) Kamarow,Y-Hild,H ICCF 2017}) 3... Nd7 4. b3 Ngf6 5. Ba3 Bxa3 6. Qxa3 Qe7 7. Qxe7+ Kxe7 8. Na3 c6 9. c4 dxc4 10. bxc4 Re8 11. Bd3 Nc5 12. Ke2 Nxd3 13. Kxd3 Bf5+ {Sherry,K-Lines,D (1779) ICCF 2014 0-1 (48)}) (2. f4 Nf6 3. d3 (3. Nf3 c5 4. e3 e6 5. Be2 Nc6 6. O-O Bd6 7. d3 O-O 8. Nbd2 b6 9. Re1 e5 10. fxe5 Nxe5 11. Nxe5 Bxe5 12. Nf3 Bd6 13. Bd2 Re8 14. Bf1 Qc7 {Salmon,G-Zande,H ICCF 2019 1/2 (25)}) 3... Bf5 4. Qb3 b6 5. Nf3 e6 6. Nd4 Bg6 7. Nd2 c5 8. Qa4+ Nbd7 9. Nc6 Qc7 10. Ne5 Bd6 11. g3 Bxe5 12. fxe5 Qxe5 13. Nf3 Qc7 {Domenche Redondo,F (1884)-Alascio Ruiz,J (1907) ICCF 2016 0-1 (43)}) (2. Qa4+ c6 3. d3 Nf6 4. Nf3 Nbd7 5. g4 Nb6 6. Qf4 Bxg4 {0-1 (6) Brooks,M-Iglesias,V ICCF 2020}) 2... d4 (2... c6 3. cxd5 cxd5 4. Nf3 Nf6 5. e3 Nc6 6. Nc3 e5 7. Bb5 Bd6 8. d3 O-O 9. h3 Qb6 10. Bxc6 bxc6 11. b3 Ba6 12. Na4 {1-0 (12) Ipekyilmaz,E (1686) -Osuna Osuna,F (1706) ICCF 2018}) 3. e3 c5 (3... e5 4. exd4 exd4 5. Nf3 c5 6. Bd3 Bd6 7. Na3 Nf6 8. Qe2+ Be7 9. Nc2 O-O 10. h3 Bd6 11. Qd1 Re8+ 12. Kf1 Nc6 13. Kg1 b6 14. b3 Bb7 15. Bb2 {Ipekyilmaz,E (1700)-Williamson,V ICCF 2018 0-1 (32)}) 4. exd4 cxd4 5. d3 Nc6 6. g3 e5 7. Bg2 Bd6 8. Ne2 Nf6 9. a3 a5 10. Bg5 Bf5 11. Nd2 O-O 12. Ne4 Be7 13. Bxf6 {Ipekyilmaz,E (1710)-Kirk,T ICCF 2018 0-1 (39)}) (1... b6 2. d4 (2. Qc2 Bb7 3. d3 g6 4. h3 Bg7 5. h4 Nf6 6. Bg5 O-O 7. Bxf6 exf6 8. h5 Re8 9. Nd2 f5 10. hxg6 hxg6 11. Ngf3 c5 12. e3 d5 13. Be2 Nc6 { Ipekyilmaz,E (1686)-Pardoe,I (1648) ICCF 2018 1-0 (38)}) (2. g3 Bb7 3. Nf3 e5 4. Bg2 e4 5. Nd4 d5 6. d3 Qd7 7. dxe4 dxe4 8. O-O Be7 9. a4 a6 10. Bf4 c5 11. Nc2 Qe6 12. Nd2 Nd7 13. Qb1 f5 {Blittkowsky,R-Buscher,M (2271) ICCF 2009 1-0 (43)}) 2... Bb7 (2... g6 3. e4 Bb7 4. Nd2 a5 5. Ngf3 Bg7 6. Bd3 h5 7. Qc2 Na6 8. O-O Nh6 9. e5 e6 10. Ne4 f5 11. exf6 Bf8 12. Neg5 Qxf6 13. Bxg6+ Nf7 14. Nxf7 {Badger,J (1732)-Reid,W (1210) ICCF 2020 1-0 (39)}) 3. Bf4 (3. Nf3 Nf6 4. Bf4 d6 5. e3 g6 6. Nbd2 Bg7 7. b4 Nd5 8. Bc4 Nxf4 9. exf4 e6 10. Qb3 Qe7 11. O-O O-O 12. Rfe1 Qd7 13. b5 c6 14. a4 d5 {Silva,A (1696)-Kemperman,H (1651) ICCF 2018 1/2 (75)}) 3... Nf6 4. Nd2 d6 5. Ngf3 Nbd7 6. e3 g6 7. Bd3 Bg7 8. Qc2 O-O 9. O-O Nh5 10. Bg5 h6 11. Bh4 Ndf6 12. a4 g5 13. Bg3 {Martínez García, F-Sabadell i Ximenes,D (2080) ICCF 2010 1/2 (40)}) (1... e6 2. Qc2 d5 3. g3 Nf6 4. Bg2 Bc5 5. h3 O-O 6. h4 Ng4 7. Nh3 Re8 8. a3 Nxf2 9. Nxf2 Qf6 10. Rf1 Bd6 11. Ne4 Bxg3+ 12. Nxg3 Qxh4 13. Qd3 {Ipekyilmaz,E (1530)-Pettigrew,S (1504) ICCF 2016 1/2}) 2. d3 (2. h4 e5 3. g3 d5 4. Bg2 c5 (4... Bd6 5. d3 O-O 6. e3 Bf5 7. Ne2 Nbd7 8. a3 Nc5 9. O-O Nxd3 10. b4 c6 11. Ra2 Nxf2 12. Rxf2 Bxb1 13. Rb2 Be4 14. a4 Qd7 15. Bxe4 Nxe4 16. Rg2 {Brown,F (1881)-Wellen,L (2180) ICCF 2012 0-1 (31)}) 5. e3 Nc6 6. Ne2 Bg4 7. O-O Qd7 8. Re1 e4 9. Qc2 Ne5 10. Nf4 c4 11. b3 Nd3 12. Rf1 Bd6 13. Ba3 Bxf4 {Brown,F (1881)-Helmi,F ICCF 2012 0-1}) (2. e3 d5 3. Ne2 (3. Nf3 Bf5 4. Na3 Nbd7 5. Bb5 c6 6. Be2 e5 7. O-O e4 8. Nd4 Bg6 9. f4 exf3 10. Nxf3 Bd6 11. Bb5 Bxa3 12. Qa4 cxb5 13. Qxa3 Bd3 14. Re1 Ne4 { Monreal,E (1402)-Sauceda Salazar,E ICCF 2020 0-1}) (3. g3 e5 4. Bb5+ (4. b4 Nc6 5. d3 e4 6. Ne2 Ne5 7. Bg2 Nxd3+ 8. Kf1 {1-0 (8) Cottrell,J (1684)-Collins,E ICCF 2017}) 4... c6 5. Bd3 e4 6. Be2 Nbd7 7. b3 h5 8. h4 Ne5 9. a4 Bg4 10. d4 exd3 11. f3 dxe2 12. Qd4 Qc7 13. fxg4 hxg4 14. Nxe2 Nf3+ {Whittle,P (1327) -Boveda gay,A ICCF 2018 0-1 (27)}) 3... e5 4. d4 Nc6 5. dxe5 Nxe5 6. Nd4 Bd6 7. Nd2 O-O 8. N2f3 c5 9. c4 cxd4 10. Qb3 Nxf3+ 11. gxf3 Re8 12. Rg1 Bxh2 13. Rg5 Bf4 {Oka,A-Fujiwara,J ICCF 2012 0-1 (25)}) (2. Qc2 d6 (2... e5 3. g3 d5 4. h3 Be6 5. h4 Nc6 6. Bh3 Qd7 7. Bxe6 Qxe6 8. Nh3 h6 9. d3 Qf5 10. f3 Qd7 11. Be3 d4 12. Bf2 O-O-O 13. Nd2 g5 14. g4 {Ipekyilmaz,E (1530)-Schulz,P ICCF 2016 1-0 (35)}) 3. g3 e5 4. h3 Be7 5. h4 Bg4 6. Bh3 O-O 7. Bxg4 Nxg4 8. Nh3 h6 9. d3 Nd7 10. c4 c5 11. f3 Ngf6 12. g4 Nh7 13. g5 hxg5 {Ipekyilmaz,E (1530)-Thomas,D ICCF 2016 1-0 (26)}) (2. c4 e6 3. Nf3 d5 4. d4 Be7 5. Bg5 O-O 6. Nc3 b6 7. e3 Bb7 8. Qb3 c6 9. Bd3 Ba6 10. O-O h6 11. Bh4 Nbd7 12. Ne5 Nxe5 13. Qc2 Nxd3 { Santamaría Quintana,I (1416)-Reyes Cortés,R (1653) ICCF 2016 0-1 (36)}) (2. Qb3 Nc6 3. d4 e5 4. d5 Na5 5. Qa4 c6 6. Bg5 b5 7. Qc2 cxd5 8. e4 dxe4 9. Bxb5 Qb6 10. Qe2 Rb8 11. Bxf6 gxf6 12. Nh3 Qxb5 13. Qxb5 Rxb5 {Johansson,R (1631)-Laine, E (1923) ICCF 2012 0-1 (27)}) (2. d4 Nc6 3. d5 Ne5 4. Bf4 Ng6 5. Bg5 c6 6. Bxf6 gxf6 7. e4 d6 8. dxc6 bxc6 9. Nd2 f5 10. Qa4 Bh6 11. Qxc6+ Bd7 12. Qd5 Bxd2+ 13. Kxd2 fxe4 {Silva,A-Bouillod,Y ICCF 2014 0-1 (25)}) (2. h3 e5 3. e3 (3. d4 e4 4. Bg5 d5 5. e3 Nbd7 6. Qb3 a5 7. a4 Be7 8. Nd2 O-O 9. Qd1 h6 10. Bf4 Nb6 11. Ne2 Bd7 12. g4 Nh7 13. Bg2 Ng5 14. h4 Ne6 {Rozumek,K (1859)-Kazmierczuk,Z (2005) ICCF 2008 0-1 (31)}) 3... d5 4. Nf3 e4 5. Nh2 Bd6 6. a3 Bxh2 7. Rxh2 Qd6 8. g3 h5 9. c4 h4 10. f4 hxg3 11. Rh1 g5 12. Qe2 Bg4 13. Qg2 Bf3 {Silec, Z-Novak,A (1868) ICCF 2009 0-1 (28)}) 2... d5 (2... Nc6 3. Bg5 d5 4. Bxf6 gxf6 5. Nd2 e5 6. Ngf3 Be6 7. Qc2 f5 8. g3 Qf6 9. e3 d4 10. exd4 exd4 11. Rc1 Qe7 12. Be2 O-O-O 13. a3 dxc3 14. bxc3 {Ipekyilmaz,E (1700)-Sartori,D (1918) ICCF 2018 0-1 (52)}) (2... e5 3. Bg5 Be7 4. Bxf6 Bxf6 5. Nd2 O-O 6. Ngf3 d6 7. d4 { 1-0 (7) Ipekyilmaz,E (1686)-Nelson,J (1552) ICCF 2018}) (2... e6 3. Qc2 (3. d4 c5 4. c4 Nc6 5. d5 exd5 6. Nc3 dxc4 7. e3 d5 8. Nge2 Bd6 9. Nxd5 Nxd5 10. Qxd5 Be6 11. Qd2 Be5 12. f4 Qxd2+ 13. Bxd2 Bxb2 14. Rd1 O-O-O {Symonds Patel, J-Muneeb,M ICCF 2020 1-0 (32)}) 3... d5 4. Bg5 Be7 (4... Nbd7 5. Nd2 Be7 6. e4 c6 7. Ngf3 O-O 8. Be2 h6 9. Bh4 Qc7 10. d4 dxe4 11. Nxe4 b6 12. Bg3 Qd8 13. O-O Nxe4 14. Qxe4 Bb7 15. Bd3 Rb8 16. Bxb8 {Hendri Sevano,R-Corrente,O ICCF 2016 1-0}) 5. Nf3 c5 6. e4 dxe4 7. dxe4 O-O 8. Be2 b6 9. Nbd2 Bb7 10. O-O Nbd7 11. e5 Nd5 12. Bxe7 Qxe7 13. Rfe1 Nf4 14. Bf1 {Hendri Sevano,R-Flewelling,H (1788) ICCF 2016 1/2 (34)}) 3. Bg5 (3. Nd2 c6 4. Qc2 e5 5. e4 Bd6 6. Ngf3 O-O 7. Be2 { Sinsuat,D-Clayton,G (1603) ICCF 2020}) 3... e6 (3... e5 4. Bxf6 Qxf6 5. Nd2 Nc6 (5... Be6 6. Qb3 Nd7 7. Qxb7 Rb8 8. Qxc7 Bc5 9. e3 O-O 10. Nb3 Rfc8 11. Qa5 d4 12. Nxc5 Nxc5 13. Nf3 dxe3 14. fxe3 Rxb2 15. Qa3 Rc2 16. d4 e4 17. Nd2 { Ipekyilmaz,E (1710)-Frotscher,T ICCF 2018 0-1 (35)}) 6. Qb3 Bc5 7. Ngf3 Qd6 8. e3 O-O 9. Be2 Be6 10. Ng5 Bd7 11. Ngf3 Rfe8 12. e4 d4 13. Rd1 b6 14. Qc2 a5 15. Nb3 {Ipekyilmaz,E (1710)-Moulin,J (1884) ICCF 2018 0-1 (43)}) 4. Bxf6 Qxf6 5. Nf3 Nc6 6. Nbd2 (6. e3 Bd6 7. Nbd2 Bd7 8. d4 g5 9. Bb5 O-O-O 10. Bxc6 Bxc6 11. Ne5 Bxe5 12. dxe5 Qxe5 13. Nf3 Qe4 14. Qd4 Qxd4 15. cxd4 f6 16. Rc1 h5 17. Kd2 h4 {Ipekyilmaz,E (1700)-Bas Fortuny,M (1799) ICCF 2018 0-1 (60)}) 6... g5 7. h3 Bd7 8. d4 h5 9. e3 O-O-O 10. Bb5 Bd6 11. Bxc6 Bxc6 12. Ne5 Bxe5 {Ipekyilmaz,E (1700)-McLeod,S ICCF 2018 0-1 (71)}) (1. f3 e5 (1... c5 2. Nc3 (2. Kf2 d5 3. e3 e5 4. Bb5+ Nc6 5. Ne2 Bd6 6. d4 cxd4 7. exd4 Nge7 8. dxe5 Bxe5 9. Bxc6+ bxc6 10. Re1 O-O 11. Kg1 Nf5 12. c3 Qh4 13. g3 Nxg3 {Akrill,R-Droualliere,P (2200) ICCF 2014 0-1}) 2... Nf6 3. d4 cxd4 4. Qxd4 Nc6 5. Qh4 e6 6. Bg5 Be7 7. O-O-O d5 8. e3 a6 9. Bd3 O-O 10. Bxf6 Bxf6 11. Qxh7# {1-0 (11) Akrill,R-Distefano,R ICCF 2014}) (1... d5 2. d4 (2. Kf2 e6 3. e3 d4 4. Bd3 Bc5 5. c3 e5 6. Ne2 Nf6 7. Qc2 O-O 8. cxd4 exd4 9. Qxc5 dxe3+ 10. Qxe3 Re8 11. Bxh7+ Nxh7 12. Qc3 { 1-0 (12) Rychkov,A-Baydashkin,A (2309) ICCF 2018}) 2... c5 3. e4 Nc6 4. dxc5 Nf6 5. exd5 Nxd5 6. Ne2 e6 7. c4 Ndb4 8. Qxd8+ Nxd8 9. Kd2 Bxc5 10. a3 Nbc6 11. b4 Bf2 12. Nbc3 O-O 13. Bb2 {Perkins,K-Milojevic,B (1765) ICCF 2020 1-0 (60)}) (1... Nc6 2. d4 d5 3. e4 Be6 4. c4 dxe4 5. d5 Bd7 6. dxc6 Bxc6 7. Qxd8+ Rxd8 8. Bf4 Rd7 9. fxe4 Bxe4 10. Nf3 Nf6 11. Nc3 e6 12. Ne5 Rd8 13. Nxe4 {Puzanov,V (2126)-Worthley,A ICCF 2011 1-0 (25)}) (1... e6 2. Nh3 Nf6 3. d4 Be7 4. e4 O-O 5. c3 b6 6. Bf4 Bb7 7. Bd3 Nh5 8. Be3 c5 9. Qc2 cxd4 10. cxd4 Nc6 11. a3 Rc8 12. Nc3 g6 13. Kf2 {Bautista,E (1497)-McGahee,B ICCF 2014 0-1 (28)}) 2. Kf2 (2. e3 d5 3. Nc3 Nf6 4. d4 Nc6 (4... Nbd7 5. Bd3 c6 6. Nge2 Qc7 7. O-O Bd6 8. Ng3 g6 9. dxe5 Nxe5 10. e4 Nxd3 11. cxd3 O-O 12. Bd2 Qb6+ 13. Kh1 Qxb2 14. Nge2 Re8 15. a4 Qb6 16. Bg5 {Oneill,B (1561)-Vellema,J ICCF 2014 1-0 (39)}) 5. dxe5 (5. Bb5 Bd6 6. Nge2 O-O 7. O-O a6 8. Bxc6 bxc6 9. dxe5 Bxe5 10. b3 Bd6 11. Bb2 Re8 12. Qd3 a5 13. Rfe1 Nh5 14. Qd2 Qg5 15. Na4 Bd7 16. Bd4 Bf5 {Oneill,B (1561) -Howard,J ICCF 2014 0-1 (46)}) 5... Nxe5 6. Nge2 (6. f4 Ng6 7. Bb5+ c6 8. Bd3 Bc5 9. Nf3 Qe7 10. g3 Bxe3 11. Qe2 Bb6 12. Qxe7+ Nxe7 13. Na4 Bh3 14. Nxb6 axb6 15. Ng5 Bg2 16. Rg1 Be4 17. h3 Nf5 {Oneill,B (1561)-Lanin,B (2083) ICCF 2014 0-1 (76)}) 6... Bd6 7. f4 Ng6 8. Nd4 O-O 9. Be2 Re8 10. O-O c6 11. Bd2 a6 12. Bd3 Ne7 13. Nf3 c5 {Oneill,B (1561)-Cordes,T ICCF 2014 0-1 (52)}) (2. Nc3 d5 ( 2... Nc6 3. e3 d5 4. Bb5 Nf6 5. d3 Bd6 6. Nge2 O-O 7. O-O Ne7 8. Ng3 c5 9. Ba4 a6 10. e4 b5 11. Nxd5 Nfxd5 12. exd5 bxa4 13. c4 Bd7 14. Ne4 {Oneill,B (1561) -Kazoks,A (2348) ICCF 2014 0-1}) 3. d4 Nc6 4. dxe5 d4 5. Ne4 f5 6. Ng3 Bb4+ 7. Bd2 f4 8. c3 Qh4 9. cxb4 Nge7 10. Qa4 fxg3 11. h3 O-O 12. f4 Rxf4 13. Nf3 Rxf3 {Oneill,B (1561)-Carter,M (1819) ICCF 2014 1/2 (38)}) 2... d5 (2... Bc5+ 3. e3 d5 (3... Nf6 4. d4 exd4 5. exd4 Be7 6. Bd3 O-O 7. Ne2 d5 8. Re1 Nc6 9. c3 Bd6 10. Kg1 a6 11. Bg5 h6 12. Bh4 Be7 13. Nd2 Nh5 14. Bxe7 Nxe7 15. Nb3 {Akrill, R-Scavo,S (1591) ICCF 2015 1-0 (26)}) 4. g3 Nf6 5. Bb5+ Nc6 6. d4 exd4 7. exd4 Bxd4+ 8. Qxd4 O-O 9. Bxc6 bxc6 10. Nc3 c5 11. Qxc5 d4 12. Nb5 Ng4+ 13. fxg4 Qf6+ 14. Nf3 {Akrill,R-Potter,C (1597) ICCF 2014 1-0}) (2... Nf6 3. c4 Nc6 4. e3 Bc5 5. a3 a5 6. Nc3 d5 7. cxd5 Nxd5 8. Bb5 O-O 9. Nge2 Nce7 10. d4 exd4 11. Nxd4 Nxc3 12. bxc3 Nd5 13. Qc2 Qf6 14. Rd1 {Jácome Jiménez,A-Hernandez Martinez,J ICCF 2018 1/2 (33)}) 3. e3 Nf6 (3... Nc6 4. g3 Bc5 5. Bb5 Qf6 6. Ne2 Bg4 7. Nec3 Nge7 8. Bxc6+ bxc6 9. Kg2 Bd7 10. b3 h5 11. Ba3 Bxa3 12. Nxa3 Qd6 13. Nab1 h4 14. d3 Nf5 15. Qg1 {Akrill,R-Robinson,W ICCF 2014 0-1 (29)}) (3... d4 4. Qe2 Nc6 5. c3 Be6 6. d3 dxe3+ 7. Bxe3 Be7 8. b4 a6 9. Nd2 Nf6 10. Nb3 O-O 11. g3 Nd5 12. Qd2 Nxe3 13. Qxe3 Bg5 14. Qe1 b6 15. Nh3 {Caliskan,I-Pekin,T ICCF 2005 0-1 (42)}) 4. d4 Nc6 (4... exd4 5. exd4 Bd6 6. Bb5+ Bd7 7. Bxd7+ Qxd7 8. Qe2+ Be7 9. Nh3 O-O 10. Nc3 Re8 11. Be3 Nc6 12. Nf4 Bb4 13. Qd3 Ne7 14. Rhe1 Nf5 15. g4 Nxe3 16. Rxe3 {Akrill,R-Martínez Molina,J ICCF 2014 1-0 (33)}) 5. Bb5 exd4 (5... Bd6 6. Ne2 O-O 7. Re1 exd4 8. exd4 Nh5 9. g3 a6 10. Bxc6 bxc6 11. c4 Bh3 12. c5 Be7 13. Ng1 Qd7 14. Rxe7 Qxe7 15. Nxh3 h6 16. Nc3 Rab8 17. Kg2 {Akrill,R-Risovic,A (1650) ICCF 2014 1-0 (30)}) 6. exd4 Bd7 7. Ne2 Be7 8. Nbc3 O-O 9. Re1 a6 10. Ba4 b5 11. Bb3 Be6 12. Nf4 Qd7 {Akrill,R (1830)-Dawkins, A (1588) ICCF 2015 1-0 (28)}) (1. a4 Nf6 (1... e5 2. b3 (2. a5 d5 3. a6 Nf6 4. Nf3 Nc6 5. b3 Bc5 6. Ba3 Bxa3 7. Nxa3 e4 8. Ng1 bxa6 9. c4 d4 10. Nc2 Rb8 11. Rb1 O-O 12. g3 Na5 13. Na3 Qd6 {Bautista,E (1497)-Turmo,S (1775) ICCF 2014 0-1} ) (2. e3 d6 3. h3 Bf5 4. Nc3 Nh6 5. d3 Na6 6. e4 Bg6 7. Nf3 Nc5 8. Nh4 Qxh4 9. Nd5 Bh5 10. Be2 g6 11. Nxc7+ Ke7 12. Nxa8 f6 13. g3 Bxe2 {Gradisar,M (1806) -Trifkovic,M ICCF 2006 1-0 (26)}) (2. e4 Nf6 3. Nc3 Bb4 4. Nf3 d6 5. Bb5+ c6 6. O-O cxb5 7. d3 Bxc3 8. bxc3 bxa4 {0-1 (8) Giannulli,G-Marino,A ICCF 2019}) (2. Nf3 Nc6 3. d3 d5 4. Bg5 Be7 5. Qd2 f6 6. Be3 d4 7. Ng5 fxg5 8. Ra3 dxe3 9. fxe3 Bxa3 10. bxa3 Nf6 11. Qc3 Ng4 12. g3 Qf6 13. a5 Qf2+ {Milazzo,J-Fazio,C ICCF 2018 0-1}) 2... d5 3. Bb2 Nc6 (3... Bd6 4. g3 h5 5. h4 Nc6 6. Bg2 Nf6 7. Nh3 Bg4 8. f3 Bf5 9. Na3 O-O 10. Ng5 e4 11. f4 Bg4 12. O-O Bc5+ 13. Kh2 Re8 14. Qe1 Bxa3 15. Bxa3 {Reid,W (1441)-Rodney,R (1502) ICCF 2018 0-1 (31)}) 4. g3 (4. e3 Bf5 5. d3 Nf6 6. Nf3 Bd6 7. Be2 O-O 8. O-O Qe7 9. Nbd2 Rad8 10. Qc1 d4 11. e4 Bg4 12. Nc4 Nb4 13. Nxd6 Qxd6 14. Ba3 a5 {0-1 (14) Ricotta,F-Bozic,D ICCF 2011} ) 4... Bf5 5. Bg2 Qd7 6. Na3 Bc5 7. h4 h5 8. Nh3 Rh6 9. O-O Bxh3 10. Bxh3 Qxh3 11. e3 Nf6 12. Qf3 g5 13. hxg5 {Reid,W (1441)-Dolan,B ICCF 2018 0-1}) (1... d5 2. h4 (2. Ra3 e5 (2... Nf6 3. Rd3 c6 4. c4 e5 5. cxd5 cxd5 6. Nf3 Bd6 7. Nc3 O-O 8. Nxd5 Ng4 9. h3 Bc5 10. e4 Nxf2 11. Qc2 b6 12. Ne3 Nxh1 13. Rxd8 Rxd8 14. d4 {Morra,C-Johnson,B ICCF 2020 1-0}) 3. Re3 Nc6 4. c4 d4 5. Rg3 Nf6 6. e3 Ne4 7. Rf3 Bg4 8. Qc2 Nc5 9. Rg3 Nb4 10. Qe4 Nxe4 11. Rxg4 Nc5 12. exd4 Ncd3+ 13. Bxd3 Nxd3+ {Morra,C-Chronopoulos,A ICCF 2020 0-1}) (2. b3 Bf5 3. c4 Nf6 4. cxd5 Nxd5 5. Nc3 Nxc3 6. dxc3 Qxd1+ 7. Kxd1 Nc6 8. b4 O-O-O+ 9. Ke1 Bc2 10. Ra2 Rd1# {0-1 (10) Kostová,M-Zilková,M ICCF 2009}) 2... e5 3. b3 Nf6 4. Bb2 (4. g3 Bc5 5. e3 O-O 6. Bb2 d4 (6... Re8 7. h5 Bg4 8. Be2 Bxe2 9. Qxe2 Nc6 10. a5 Qd7 11. h6 Qf5 12. d3 d4 13. e4 Qg4 14. Nf3 Rad8 15. Rh4 Qd7 16. Nbd2 Bb4 17. O-O-O Nxa5 18. Ng5 {Reid,W (1559)-McLaughlin,E (1436) ICCF 2018 0-1 (29)}) 7. Bg2 Bg4 8. Nf3 e4 9. exd4 Bxd4 10. Bxd4 exf3 11. Bxf3 Qxd4 12. Nc3 Re8+ 13. Ne2 Bxf3 14. c3 Qg4 15. Rh2 Bxe2 {Reid,W-Portal,A (1677) ICCF 2018 0-1}) 4... Bd6 5. g3 O-O 6. Bg2 Nc6 (6... c6 7. a5 Bf5 8. h5 e4 9. h6 Nbd7 10. a6 b6 11. e3 Bg4 12. f3 Bxg3+ 13. Kf1 exf3 14. Nxf3 Ne5 15. d4 Nxf3 16. Bxf3 Qd7 17. Ba3 Rfe8 18. Bc1 {Reid,W (1559)-Braider,C ICCF 2018 0-1 (42)}) (6... Bg4 7. Nh3 Nc6 8. Na3 a6 9. c4 d4 10. d3 e4 11. Qc2 Nb4 12. Qd2 e3 13. Qd1 Re8 14. O-O Nh5 15. Kh2 Qxh4 16. Kg1 exf2+ 17. Rxf2 Qxg3 18. Qd2 {Reid,W (1341)-Lund,S (2006) ICCF 2019 0-1}) 7. e3 Bg4 8. Bf3 Qd7 9. Bxg4 Nxg4 10. f3 e4 11. f4 d4 12. Ne2 dxe3 13. dxe3 {Reid,W (1470)-Burnham,J ICCF 2018 0-1 (32)}) (1... c5 2. e3 d5 3. Nc3 Nf6 4. Bb5+ Nbd7 5. a5 a6 6. Ba4 d4 7. exd4 cxd4 8. Nce2 e5 9. Nf3 Bd6 10. Ng5 h6 11. Nf3 O-O 12. Bxd7 Bxd7 13. d3 {Gradisar,M (1806)-Gaber,M ICCF 2006 0-1 (34)}) (1... e6 2. h4 d5 3. b3 e5 4. g3 Bc5 5. Bb2 Qf6 6. e3 d4 7. f4 dxe3 8. Bxe5 Qc6 9. Nf3 Bg4 10. Be2 f6 11. Bc3 Ne7 12. Bb5 e2 13. Qxe2 {Reid,W (1470) -Alves,M ICCF 2018 0-1 (41)}) (1... f5 2. e3 Nf6 3. b3 g6 4. Bb2 Bg7 5. g3 O-O 6. Bg2 d5 7. h4 c5 8. Na3 Nc6 9. Nh3 e5 10. Qe2 h6 11. O-O-O a6 12. Rhf1 Rb8 13. d4 {Reid,W (1408)-Jones,J (1899) ICCF 2019 0-1}) 2. b3 e5 (2... g6 3. h4 Bg7 4. Bb2 d6 5. g3 Nc6 6. Bg2 O-O 7. e3 e5 8. a5 Nb4 9. Ra4 c5 10. Na3 Bd7 11. Bxb7 Bxa4 12. bxa4 Rb8 13. Bg2 Re8 14. Nc4 {Reid,W-Rodriguez,A ICCF 2018 1-0 (28)}) 3. Bb2 (3. Na3 d5 4. Nh3 Bd6 5. c4 Be6 6. e3 Nc6 7. Nb5 Bb4 8. cxd5 Bxd5 9. f4 a6 10. Nc3 Ne4 11. fxe5 Nxc3 {0-1 (11) Jokipii,G (1279)-Gibson,C (1309) ICCF 2014}) 3... Nc6 (3... e4 4. g3 d5 5. h4 Be7 6. e3 O-O 7. Nh3 c6 8. d3 exd3 9. Bxd3 Bg4 10. Be2 Bxh3 11. Rxh3 Ne4 12. f3 Bf6 13. Bd4 Nxg3 14. Bxf6 Qxf6 15. Qd4 {Reid,W (1470)-Hall,J (1630) ICCF 2018 0-1 (39)}) 4. g3 d5 5. Bg2 (5. h4 Bc5 (5... Bd6 6. Bg2 Bg4 7. f3 Be6 8. c3 e4 9. Kf2 Qe7 10. h5 O-O-O 11. e3 exf3 12. Bxf3 Ne5 13. Be2 Ne4+ 14. Kg2 Qg5 15. Qe1 Nd7 16. Nf3 Qxg3+ 17. Qxg3 { Reid,W (1559)-Badger,J (1808) ICCF 2018 0-1 (38)}) 6. e3 O-O 7. Bg2 e4 (7... d4 8. a5 Bg4 9. Bf3 Qd7 10. d3 Bxf3 11. Qxf3 dxe3 12. fxe3 e4 13. dxe4 Ng4 14. Bc1 f5 15. Nh3 Rad8 16. O-O Bxe3+ 17. Bxe3 fxe4 18. Qe2 Rxf1+ 19. Kg2 {Reid, W-Moujan,P (1768) ICCF 2018 0-1 (25)}) 8. d4 Bd6 9. Nh3 Bg4 10. Qd2 Qd7 11. Nc3 a6 12. Nf4 Ne7 13. Bh3 Bxf4 14. exf4 Bxh3 15. O-O-O Bg4 16. Ne2 Nf5 {Reid,W (1408)-Braider,C (1507) ICCF 2019 0-1 (35)}) 5... d4 (5... h5 6. h4 Bc5 7. Na3 Ne4 8. Nh3 Qf6 9. e3 Bg4 10. f3 Nxg3 11. Rg1 Bxh3 12. Bxh3 Qxh4 13. Kf2 Ne4+ 14. Kf1 Qf2# {0-1 (14) Reid,W (1210)-Deakin,C ICCF 2020}) 6. h4 e4 7. Nh3 Bc5 ( 7... Bf5 8. Na3 Bc5 9. Nf4 Qe7 10. Nc4 O-O 11. O-O Rad8 12. d3 Rfe8 13. e3 Ne5 14. Na5 c6 15. Ne2 dxe3 16. Nc4 exf2+ 17. Kh1 Bg4 18. d4 e3 19. Nxe5 {Reid,W (1255)-Cisneros Escalona,M (1392) ICCF 2020 0-1 (28)}) 8. Na3 O-O 9. Nc4 Bg4 10. Nf4 Re8 11. O-O Nh5 12. Nxh5 Bxh5 {Reid,W (1408)-Schober,A ICCF 2019 0-1 (26)}) (1. c4 e5 2. g3 d5 3. Bg2 d4 (3... Be6 4. Nc3 c6 5. cxd5 cxd5 6. d4 exd4 7. Qxd4 Nc6 8. Qa4 Nf6 9. Nf3 Qd7 10. O-O Ne5 11. Nxe5 Qxa4 12. Nxa4 Bd6 13. Nd3 Rc8 14. Nc3 a6 15. Bg5 {Ackley,P (1989)-Rosser,G (1799) ICCF 2017 1-0}) ( 3... e4 4. cxd5 Qxd5 5. Nc3 Qd8 6. Nxe4 Be7 7. Nf3 Nc6 8. d4 Bf5 9. Nc3 Nb4 10. e4 Be6 11. a3 Nc6 12. d5 Bc8 13. Qa4 Nf6 14. dxc6 b6 15. Bf4 {Ackley,P (1989) -Miedema,H (1203) ICCF 2017 1-0 (25)}) 4. d3 (4. b4 c6 (4... Nf6 5. Nf3 (5. a3 c5 6. b5 Bd6 7. a4 O-O 8. d3 Re8 9. a5 e4 10. Bg5 a6 11. b6 exd3 12. Qxd3 h6 13. Bxf6 Qxf6 14. Nd2 Bf5 15. Be4 Bxe4 16. Nxe4 Qf5 {Gradisar,M-Kozarski,A ICCF 2006 0-1 (40)}) 5... e4 6. Ng5 Bf5 7. d3 Bxb4+ 8. Bd2 Be7 9. dxe4 Bc8 10. O-O O-O 11. Qc2 Nc6 12. Nf3 Be6 13. Rd1 Ng4 14. Bf4 Bc5 15. Qb2 f6 16. h3 { Milde,L (2344)-King,T (2103) ICCF 2020 1/2 (45)}) 5. a3 a5 (5... Be6 6. d3 a5 7. Nf3 Nd7 8. bxa5 Qxa5+ 9. Nbd2 Ngf6 10. O-O Be7 11. Nb3 Qa4 12. Rb1 h6 13. Nfd2 O-O 14. f4 Ng4 15. Nf3 Bxa3 16. Nxe5 Ndxe5 17. fxe5 {Milde,L (2344) -Edwards,K (2255) ICCF 2020 1/2 (40)}) 6. b5 h5 7. h4 Bg4 8. Nf3 Qc7 9. d3 Nd7 10. Nbd2 Ngf6 11. a4 Bb4 12. O-O O-O 13. Nb3 c5 14. Ng5 Rae8 15. Bd2 b6 { Milde,L (2344)-Richardt,M (2338) ICCF 2020 1/2 (25)}) (4. e4 Nc6 5. d3 Nf6 6. f4 exf4 7. Bxf4 Bb4+ 8. Bd2 Ng4 9. Bxb4 Nxb4 10. Qa4+ Nc6 11. Ne2 Qf6 12. Rf1 Qh6 13. Rf4 Qxh2 14. Bf3 Nge5 15. Qa3 Nb4 {Mallassagne,F-Tassone,R (2138) ICCF 2015 0-1}) 4... a5 (4... Bd6 5. a3 (5. Na3 a6 6. Nf3 c5 7. Nc2 Nf6 8. e3 O-O 9. O-O Nc6 10. exd4 exd4 11. b4 cxb4 12. Bb2 Bc5 13. Qd2 Qd6 14. Rfe1 a5 15. Qg5 h6 16. Qh4 {Dam,J (1811)-Varkentin,W ICCF 2015 0-1}) 5... Nf6 6. Bd2 h6 7. b4 c6 8. c5 Bc7 9. h3 Be6 10. Bc1 a5 11. Qa4 Nbd7 12. Bd2 axb4 13. Qxb4 O-O 14. Qxb7 e4 15. dxe4 d3 16. e3 {Thomas,G (1796)-Hellström,A ICCF 2020 0-1}) (4... Nc6 5. Bxc6+ (5. Nh3 Nf6 6. O-O Bd6 7. Nd2 Bg4 8. f3 Bf5 9. Nf2 O-O 10. Nde4 Be7 11. a3 a5 12. Bg5 h6 13. Nxf6+ Bxf6 14. Bxf6 Qxf6 15. Ne4 Qd8 16. f4 Rb8 { McLaughlin,E (1681)-Nurmi,R (1774) ICCF 2015 1-0}) 5... bxc6 6. Nf3 f6 7. Nbd2 (7. O-O c5 8. e3 Ne7 9. Nbd2 Bg4 10. Ne4 Ng6 11. Re1 Qd7 12. h4 f5 13. Ned2 dxe3 14. Rxe3 Bd6 15. Qb3 f4 16. gxf4 O-O 17. Nxe5 Bxe5 {0-1 (17) Oleynik,V (2070)-Ragnarsson,J (2087) ICCF 2016}) 7... a5 8. O-O Ne7 9. Qa4 Bd7 10. c5 Qb8 11. Ne4 Nd5 12. a3 Qb5 {0-1 (12) De Smet,K (2181)-Gromotka,H (2389) ICCF 2017}) (4... c6 5. Nf3 Bg4 6. O-O f6 7. e3 Bc5 8. exd4 Bxd4 9. Nbd2 Nh6 10. Qb3 b6 11. Nxd4 Qxd4 12. Ne4 Nf7 13. c5 O-O 14. Be3 Qd7 15. cxb6 axb6 16. Qxb6 {Vaillant, F-David-Bordier,C (2225) ICCF 2013 1-0 (48)}) (4... c5 5. e4 Nc6 6. Nd2 h5 7. h4 g6 8. a3 a5 9. Ne2 Nf6 10. Nf3 Bg7 11. b3 Qd6 12. Bd2 Bd7 13. O-O O-O 14. Qc1 Bg4 15. Rb1 Rab8 16. Re1 {Brandl,A (2053)-Kavc,A (2224) ICCF 2017 0-1 (43)} ) 5. a3 Nf6 6. Bg5 h6 7. Bd2 Nc6 8. e3 Bc5 9. e4 Nd7 10. Ne2 Be7 11. f4 Nc5 12. Bc1 exf4 {Thomas,G (1815)-Lund,S (2006) ICCF 2019 0-1 (30)}) (1. d4 Nf6 (1... e5 2. g3 exd4 3. Qxd4 Nc6 4. Qd3 d5 5. Bg2 Nf6 6. Bg5 Be6 7. a3 Be7 8. Nf3 h6 9. Bf4 d4 10. Ne5 Nxe5 11. Bxe5 Bd5 12. Bxd5 Qxd5 13. O-O {Hodgkins,N-Lasley,M ICCF 2010 0-1 (52)}) 2. a3 d5 (2... g6 3. c4 (3. Nc3 d5 4. Bf4 (4. Bg5 Bg7 5. e3 O-O 6. Nf3 b6 7. Ne5 Bb7 8. Qd2 c5 {0-1 (8) Marinov,P (2309)-Vakrilov,B ICCF 2012}) 4... Bg7 5. Qd2 (5. e3 O-O 6. Be2 c5 7. Nf3 Nc6 (7... cxd4 8. exd4 Nc6 9. O-O Bf5 10. Re1 Ne4 11. Ne5 Nxe5 12. Bxe5 Bxe5 13. dxe5 Qb6 14. Nxe4 dxe4 15. Qc1 Rfd8 16. b3 Qc5 17. c4 Qxe5 18. Qg5 Rd6 19. Rad1 {Catania,D (1787) -Holmes,R ICCF 2009 0-1 (28)}) 8. O-O Ne4 9. Na4 cxd4 10. exd4 h6 11. c4 dxc4 12. Bxc4 Bg4 13. Nc5 Nxc5 14. dxc5 e5 15. Qxd8 Raxd8 16. Be3 e4 {Horacek, D-Holmes,R ICCF 2009 0-1 (28)}) 5... c5 (5... O-O 6. Bh6 Bxh6 7. Qxh6 Bf5 8. O-O-O Ng4 {0-1 (8) Marin,E (2137)-Vélez,R (2199) ICCF 2016}) 6. e3 Nc6 7. h3 Nh5 {0-1 (7) Marin,E (2137)-Natera,L (2041) ICCF 2016}) (3. Nf3 Bg7 4. c3 (4. e3 O-O 5. Be2 d6 6. O-O Nbd7 7. c4 e5 8. Nc3 Re8 9. b4 exd4 10. Nxd4 Nb6 11. Bb2 Qe7 12. Rc1 c6 13. h3 a5 14. Qb3 axb4 15. axb4 Be6 {Fetisov,A (2429)-De Blois Figueredo,A (2349) ICCF 2014 1-0 (42)}) 4... O-O 5. h3 d6 6. Bg5 Nbd7 7. e3 c5 8. Nbd2 a6 9. Be2 h6 10. Bh4 Rb8 11. a4 b5 12. O-O Qb6 13. Qb3 Rd8 14. Qc2 Bb7 {Enescu,C (2416)-Epure,C (2474) ICCF 2019 1/2 (41)}) 3... Bg7 4. Nf3 ( 4. e3 O-O 5. Nf3 b6 6. Be2 Bb7 7. O-O d5 8. cxd5 Bxd5 9. Nc3 Bb7 10. b4 c5 11. bxc5 bxc5 12. Rb1 Bd5 13. dxc5 e6 14. Bb2 Re8 15. Nxd5 Qxd5 {Arnold, B-Arvidsson,D ICCF 2017 1-0}) 4... O-O 5. h3 d5 (5... c5 6. d5 d6 7. Nc3 e6 8. e4 exd5 9. exd5 Re8+ 10. Be2 Bf5 11. O-O Ne4 12. Na2 Na6 13. Re1 Qd7 14. Bd3 Nf6 {Krecak,Z (2374)-Krabbe,W (2328) ICCF 2009 1-0 (58)}) 6. cxd5 Ne4 7. e3 Qxd5 8. Nc3 Nxc3 9. bxc3 c5 10. Rb1 Nd7 11. Qc2 b6 12. e4 Qd6 13. Bb5 a6 14. Be2 {Bucsa,I (2205)-Welik,L (2102) ICCF 2013 0-1 (68)}) (2... c5 3. d5 b5 4. c4 Bb7 5. Nf3 g6 6. Nc3 bxc4 7. e4 d6 8. Bxc4 Bg7 9. O-O O-O 10. Re1 Ba6 11. Nb5 Ne8 12. a4 Bc8 13. h3 Na6 14. e5 {Moriarty,A (2278)-Almarza Mato,C (2121) ICCF 2019 1-0}) 3. Bf4 (3. c4 dxc4 4. Nc3 (4. e3 e5 5. Bxc4 exd4 6. exd4 Bd6 7. Nf3 Nc6 8. O-O O-O 9. Re1 a6 10. Be3 Bf5 11. Nc3 h6 12. Qd2 Re8 13. Bxh6 Rxe1+ 14. Rxe1 gxh6 15. Qxh6 Nh7 {Enescu,C (2416)-Malisevschi,C (2235) ICCF 2019 1-0 (30) }) 4... g6 5. e4 Bg7 6. Bxc4 e6 7. Nf3 a6 8. O-O b5 9. Ba2 Bb7 10. Re1 O-O 11. Bg5 h6 12. Bh4 g5 13. Bg3 Nh5 {Potter,D-Mokosak,D ICCF 2007 0-1 (35)}) 3... e6 4. e3 Bd6 5. Qf3 O-O 6. h3 c5 7. dxc5 Bxc5 8. Nd2 Nc6 9. c3 e5 10. Bg3 Be6 11. Bb5 Qb6 12. Bxc6 bxc6 {Krett,V (1806)-Jezek,O (1610) ICCF 2015 1/2 (111)}) (1. e3 d5 (1... e5 2. Nf3 (2. d3 d5 (2... Nf6 3. e4 d5 4. Qe2 Nc6 5. c3 Be7 6. b4 a6 7. h3 O-O 8. Nf3 Re8 9. a3 Bf8 10. a4 d4 11. Bd2 dxc3 12. Bxc3 Bxb4 13. Qd2 Bxc3 14. Nxc3 {Wójcik,L-Harman,K (1522) ICCF 2019 0-1 (32)}) 3. Nd2 (3. d4 Nc6 4. Bb5 exd4 (4... e4 5. c4 a6 6. Bxc6+ bxc6 7. Ne2 Qg5 {0-1 (7) Schafranietz, S-Borgeaud,O ICCF 2015}) 5. exd4 Bd6 6. Nc3 a6 7. Bxc6+ bxc6 8. Nge2 Qf6 9. Be3 Ne7 10. Qd2 O-O 11. h4 h6 {0-1 (11) Schafranietz,S-Chen,F ICCF 2015}) (3. g3 Nf6 (3... Bd6 4. Nc3 (4. b3 Nf6 5. Bg2 O-O 6. Bb2 Qe7 7. Ne2 Rd8 8. Nd2 c6 9. O-O a5 10. d4 e4 11. c4 h5 12. c5 Bc7 13. h3 h4 14. Qc2 hxg3 15. fxg3 Nh5 { Brodie,P (1787)-Wegelin,R (2333) ICCF 2016 0-1 (49)}) 4... c6 5. Nf3 f6 6. Bg2 Ne7 7. O-O Bg4 8. h3 Be6 9. b3 {1-0 (9) Brodie,P (1788)-Llorach Gracia,T (2246) ICCF 2018}) 4. Bg2 (4. Nf3 Bd6 5. Nc3 h6 6. Bg2 O-O 7. O-O c6 8. Qd2 Re8 9. b3 a5 10. Bb2 Bg4 11. d4 e4 12. Ne5 Bxe5 13. dxe5 Nfd7 14. h3 Bh5 15. g4 Bg6 { Brodie,P (1871)-Kurgansky,V (2366) ICCF 2015 0-1 (75)}) 4... c6 5. Ne2 (5. c3 Bf5 6. Ne2 Bd6 7. O-O O-O 8. Kh1 Nbd7 9. Ng1 Nc5 10. d4 Nd3 11. Nf3 e4 12. Ne1 Bg4 13. Qd2 Nxc1 14. Qxc1 Be2 15. Rg1 Ng4 16. Bf1 Nxf2+ {Armstrong,J (1484) -Anderson,J (1854) ICCF 2018 0-1 (45)}) 5... Bc5 6. O-O O-O 7. b3 Bf5 8. Bb2 Nbd7 9. c4 dxc4 10. d4 exd4 11. exd4 c3 12. Nbxc3 Bd6 13. d5 c5 14. Nb5 Be5 { Serec,M-Borisek,A (1611) ICCF 2006 0-1}) (3. a3 Nf6 4. h3 c5 5. b3 Nc6 6. Ne2 Bf5 (6... Be7 7. Nd2 Be6 8. g3 O-O 9. Bg2 Qd7 10. Bb2 d4 11. e4 Bd6 12. g4 Ne7 13. Ng3 Ng6 14. Qe2 Nf4 15. Qf3 b5 16. Nf5 Bc7 17. Qd1 Nxg2+ 18. Kf1 {Soldano, G (2257)-Velker,W (2275) ICCF 2018 0-1 (26)}) 7. Nd2 Be7 8. g3 O-O 9. Bb2 e4 10. Bg2 exd3 11. cxd3 Bxd3 12. Nf4 Be4 13. Bxe4 Nxe4 14. Qg4 Bf6 {Soldano,G (2251)-Poupinel,M (1882) ICCF 2018 0-1 (40)}) (3. Ne2 f5 4. f3 Nf6 5. Nd2 Bd6 6. Nb3 O-O 7. d4 exd4 8. exd4 Re8 9. Qd3 Nh5 10. Bd2 Qh4+ 11. Kd1 b6 12. Be1 Qf6 13. h3 f4 14. g4 fxg3 {Gomez,P-Richardt,M ICCF 2012 0-1}) (3. Be2 Nf6 4. Bd2 (4. h3 Bd6 5. Nf3 h6 6. O-O e4 7. dxe4 dxe4 8. Nh2 O-O 9. Nc3 Nc6 10. a3 { 1-0 (10) Arezki,M (1938)-Lerari,S (1924) ICCF 2010}) 4... Nc6 5. Nf3 Be7 6. Bc3 d4 7. exd4 exd4 8. Bd2 O-O 9. O-O Re8 10. c3 h6 11. Qa4 Bc5 12. b4 dxc3 13. Re1 cxd2 14. Nbxd2 Bxb4 {Coronel,E-Palombo,A ICCF 2018 0-1}) (3. Nh3 Bxh3 4. gxh3 Bc5 5. d4 exd4 6. exd4 Bd6 7. Qe2+ Qe7 {0-1 (7) Yaramis,S-Balkanci,G (1849) ICCF 2012}) 3... Nf6 (3... c5 4. b3 Be6 5. g3 Nc6 6. Bg2 Bd6 7. Bb2 Qd7 8. Ne2 Nge7 9. O-O h5 10. c3 h4 11. c4 O-O-O 12. e4 d4 13. Nf3 f6 14. Qd2 g5 15. Rfd1 {Serec,M-Gavrilovic,M (1977) ICCF 2006 0-1}) 4. Ne2 (4. b3 Nc6 (4... Bd6 5. Bb2 Qe7 6. c3 O-O 7. a3 c6 8. c4 Bf5 9. h3 Nbd7 10. Ngf3 e4 11. dxe4 dxe4 12. Nd4 Bg6 13. b4 c5 14. Nb5 Bb8 15. Qb3 Rd8 16. Be2 {Mathe,I (2284)-Boskovic,B (2262) ICCF 2008 0-1}) 5. Bb2 Bc5 6. g3 O-O 7. Bg2 Re8 8. Ngf3 d4 9. O-O dxe3 10. fxe3 Ng4 11. Nc4 Bxe3+ 12. Nxe3 Nxe3 13. Qe2 Nxf1 14. Rxf1 f6 15. Rd1 Bg4 {Serec, M-Zupec,J (1758) ICCF 2006 0-1}) 4... Bd6 (4... Nc6 5. g3 (5. Ng3 Bg4 6. Be2 Bxe2 7. Qxe2 h5 8. e4 h4 9. Ngf1 h3 10. g3 Nd4 11. Qd1 Qd7 12. c3 Nc6 13. Qe2 O-O-O 14. f3 Be7 15. Nb3 d4 16. c4 Qe6 {Nunnally,R-Bergkvist,G ICCF 2007 0-1 (46)}) 5... Bf5 6. Bg2 Qd7 7. a3 h5 8. h4 Bd6 9. e4 Bg4 10. f3 Be6 11. c3 dxe4 12. dxe4 Bc5 13. Qc2 O-O-O 14. b4 Bb6 15. Nf1 Qd3 16. Qxd3 {Nunnally,R-Nepper, J ICCF 2007 0-1}) 5. Ng3 (5. g3 O-O 6. Bg2 Be6 7. O-O Nbd7 8. b3 c6 9. Bb2 Re8 10. c4 h6 11. Rc1 a5 12. a4 Nc5 13. Qc2 Bf5 14. e4 dxe4 15. dxe4 Bh7 16. Rcd1 Na6 {Nunnally,R-Stenseth,B ICCF 2007 1-0}) (5. b3 c5 6. g3 Bf5 7. Bg2 Qd7 8. Bb2 Nc6 9. h4 O-O 10. Nf1 c4 11. bxc4 dxc4 12. e4 cxd3 13. cxd3 Bb4+ 14. Bc3 Bg4 15. f3 Bxc3+ 16. Nxc3 Be6 {Nunnally,R-Pauw,M ICCF 2007 0-1 (28)}) 5... O-O 6. Be2 Be6 7. O-O c5 8. b3 Nc6 9. Bb2 Qd7 10. Nf3 h6 11. c3 d4 12. cxd4 cxd4 13. e4 Rac8 {Nunnally,R-Ramsden,J (1852) ICCF 2007 0-1}) (2. f3 d5 (2... Nc6 3. f4 d5 4. g3 exf4 5. exf4 Bc5 6. Bg2 Nf6 7. Nf3 O-O {0-1 (7) Ipekyilmaz,E (1483) -MacMillen,A (1825) ICCF 2014}) (2... Bc5 3. Kf2 Ne7 4. d4 exd4 5. exd4 Bb6 6. Nc3 d5 7. Na4 O-O 8. c3 Nd7 9. Bd3 Ng6 10. Nxb6 axb6 11. Ne2 c6 12. Re1 b5 13. Kg1 Nb6 14. b3 {Matyukhin,S (2505)-Chernov,I (2147) ICCF 2018 1-0}) 3. Kf2 Nf6 (3... Bc5 4. d3 Ne7 5. Ne2 Nf5 6. g4 Qh4+ 7. Ng3 Nxg3 8. hxg3 Qxh1 9. d4 O-O 10. dxc5 e4 11. Nc3 Qh2+ 12. Bg2 exf3 13. Qxf3 Nd7 14. Kf1 Ne5 15. Qf4 { Chernov,I (2147)-Poleshchuk,N (2482) ICCF 2018 0-1}) (3... d4 4. e4 Be6 5. d3 Nc6 6. Ne2 Qd7 7. g3 O-O-O 8. a3 f5 9. Nd2 g6 10. b4 Bh6 11. Nb3 Bxb3 12. cxb3 fxe4 13. fxe4 Be3+ 14. Bxe3 dxe3+ 15. Kxe3 {Chernov,I (2147)-Neborak,Y (2322) ICCF 2018 0-1}) 4. b3 d4 (4... Bd6 5. Ne2 O-O 6. Bb2 Re8 7. d3 Nc6 8. Nd2 Qe7 9. Ng3 Bc5 10. b4 Kh8 11. bxc5 Qxc5 12. Nb3 Qb6 13. Ke2 a5 14. Rb1 a4 15. Nd2 d4 16. Nc4 {Chernov,I (2140)-Konovalenko,A (2110) ICCF 2018 0-1 (34)}) 5. Bd3 Bc5 6. Ba3 Qd6 7. Bxc5 Qxc5 8. c3 O-O 9. b4 Qd6 10. cxd4 exd4 11. Qb3 Be6 12. Bc4 dxe3+ 13. dxe3 Bxc4 {Chernov,I (2140)-Shevchenko,A (2195) ICCF 2018 0-1}) ( 2. e4 Nf6 (2... Bc5 3. Nf3 d6 4. Bc4 Bg4 5. h3 Bh5 6. c3 Nc6 7. d4 exd4 8. g4 Bg6 9. cxd4 Bb4+ 10. Bd2 Bxe4 11. Bxb4 Nxb4 12. Qa4+ Nc6 13. Nbd2 Bxf3 14. Nxf3 {Santamaría Quintana,I (1471)-Lucena Cifré,R (1723) ICCF 2016 0-1 (36)}) 3. Nc3 (3. Nf3 Nxe4 4. Nxe5 Qe7 5. Bd3 Qxe5 6. Qf3 Ng5+ 7. Qe2 Qxe2+ 8. Bxe2 g6 9. b4 Bxb4 10. O-O d5 11. d4 Ne4 12. Bf4 Nc6 13. Bxc7 Nxd4 14. Bd1 O-O {Miedema, H-Jong,E (2034) ICCF 2015 0-1 (35)}) 3... Bb4 (3... Nc6 4. Nf3 h6 5. Bc4 Bc5 6. a3 O-O 7. d3 d6 8. O-O Be6 9. Bxe6 fxe6 10. Na4 Bb6 11. h3 Qe8 12. c3 Nh5 13. Bd2 Qg6 14. b4 Nf4 15. Bxf4 {Josefsson,K (2192)-Ribés Colom,J (2144) ICCF 2013 0-1 (49)}) (3... d5 4. exd5 Nxd5 5. Nxd5 Qxd5 6. d3 Nc6 7. f3 Bc5 8. Ne2 O-O 9. c4 Qd6 10. a4 Bf5 11. g4 Nb4 12. Ng3 Qd4 13. Nxf5 Qf2# {0-1 (13) Leutterová, A-Rakús,A ICCF 2010}) (3... Bc5 4. Bc4 c6 5. Qe2 O-O 6. d3 d5 7. exd5 cxd5 8. Bb3 e4 9. dxe4 dxe4 10. Nxe4 Nxe4 11. Be3 Nxf2 12. Qxf2 Bxe3 13. Qf3 Qd2+ 14. Kf1 Bg4 15. Qg3 {Jeftha,L-Lafrana,A (1961) ICCF 2010 0-1}) 4. a3 (4. Nge2 d5 5. Ng3 d4 6. Bb5+ c6 7. Be2 dxc3 8. O-O cxd2 9. Bxd2 Qxd2 10. Nf5 Bxf5 11. exf5 O-O 12. a3 Qxd1 13. Rfxd1 Bc5 14. c3 a5 15. Bd3 Nbd7 {Sharma,H-Koopmans,P ICCF 2010 0-1 (26)}) 4... Ba5 5. Nf3 O-O 6. b4 Bb6 7. Bb2 c6 8. Nxe5 d5 9. exd5 Re8 10. d4 Ng4 11. Qd2 f6 12. h3 Nxf2 13. Qxf2 fxe5 {Josefsson,K (2227)-Krecak,Z (2327) ICCF 2012 1/2 (45)}) (2. a3 d5 3. b4 (3. d4 Nc6 (3... exd4 4. exd4 Nf6 ( 4... c5 5. Nf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. Nc3 Nge7 9. O-O O-O 10. Bd3 f6 11. h3 Be6 12. Re1 Ne5 13. Nxe5 fxe5 14. Rxe5 Qd6 15. Be3 Qxe5 16. Bxc5 { Krecak,Z (2327)-Llagaria Vidal,E (2083) ICCF 2012 1-0 (50)}) 5. Nc3 Bd6 6. Bd3 O-O 7. Nge2 c6 8. f3 Qc7 (8... Re8 9. Bg5 h6 10. Bd2 c5 {0-1 (10) Marin,E (2137)-Reyes Maldonado,C (2352) ICCF 2016}) 9. Bg5 Nbd7 10. Qd2 Re8 11. O-O-O b5 {0-1 (11) Marin,E (2137)-Ramirez,J (2292) ICCF 2016}) 4. Nf3 Bd6 5. c4 Nge7 6. c5 {1-0 (6) Nento,R-Duyvesteyn,M ICCF 2018}) 3... Bf5 (3... Nf6 4. Bb2 Nbd7 (4... Bd6 5. Nf3 e4 6. Nd4 a5 7. b5 O-O 8. c4 dxc4 9. Bxc4 Nbd7 10. Nc3 Ne5 11. Be2 Nd3+ 12. Bxd3 exd3 13. h3 c5 14. Nb3 Re8 15. O-O b6 16. f3 {Michas, J-Ekelund Time,J ICCF 2014 0-1 (34)}) 5. Nf3 e4 6. Nd4 a5 7. b5 Ne5 8. d3 Bd6 9. dxe4 Nxe4 10. Nd2 Nxf2 11. Kxf2 Ng4+ 12. Ke2 Qg5 13. Nc4 dxc4 14. Qd2 O-O 15. h4 {Michas,J (1755)-Ogier,A ICCF 2020}) 4. Bb2 Nd7 5. Nf3 Bd6 6. c4 dxc4 7. Bxc4 Nh6 8. h3 Bg6 9. d4 exd4 10. Qxd4 f6 11. Nc3 Ne5 12. Nxe5 Bxe5 13. Qxd8+ Rxd8 {Michas,J (1803)-Elwood,D (1705) ICCF 2017 1-0 (48)}) (2. Qf3 Nf6 (2... d6 3. Bc4 Nf6 4. Nc3 Qe7 5. e4 c6 6. h3 Be6 7. Bxe6 Qxe6 8. d3 Be7 9. Nge2 O-O 10. Qg3 Nh5 11. Qf3 Nf6 12. Bg5 Qd7 13. Qg3 Nh5 14. Qg4 {Kosíková,A-Pigosová,J ICCF 2010 0-1 (56)}) (2... Nh6 3. Bc4 d6 4. Nc3 Be7 5. b3 O-O 6. Bb2 Nc6 7. Nge2 Bg4 8. Qe4 Bf5 9. Qf3 Bg4 10. Qe4 Bxe2 11. Bxe2 g6 12. O-O a6 13. Rae1 Qd7 14. d4 {Sebestová,J-Raková,E ICCF 2010 1-0 (29)}) 3. Bc4 (3. d4 e4 4. Qh3 d5 5. Qg3 Nc6 6. Qf4 Bd6 7. Qh4 O-O 8. f3 Nb4 9. g4 Nxc2+ 10. Kd1 Nxa1 11. g5 Nd7 12. fxe4 dxe4 13. Nf3 exf3 14. Bd3 g6 {Kratochvíl,A-Pálová,S (1741) ICCF 2016}) (3. g4 h6 4. Bc4 d5 5. Bb3 Bxg4 6. Qg2 c6 7. d4 Nbd7 8. c4 exd4 9. cxd5 Nc5 10. exd4 Nd3+ 11. Kd2 Qe7 12. Kxd3 Qe1 13. Bd2 Bf5+ 14. Kc3 Ne4+ {Labák,T-Krucko,J (1845) ICCF 2010 0-1}) 3... Nc6 (3... d5 4. Bb3 e4 5. Qg3 Nc6 6. f4 a5 7. Nh3 a4 8. Bxa4 Bd7 9. b3 Nb4 {0-1 (9) Labák,T-Zibrita,P ICCF 2010}) 4. Bb5 (4. a3 d5 5. Ba2 Bg4 6. Qg3 h5 7. a4 Ne4 8. Qxg4 hxg4 9. d3 Bb4+ 10. c3 Nxf2 11. Kxf2 Qf6+ 12. Ke1 Bc5 13. d4 exd4 14. c4 dxe3 15. cxd5 Qf2+ {Kratochvíl,A-Vémola,S ICCF 2016 0-1}) 4... a6 5. Ba4 b5 6. Bb3 d5 7. Nh3 h6 8. Ng1 Be7 9. Nc3 O-O 10. d3 Bg4 11. Qg3 h5 12. d4 g6 13. f3 exd4 {Kratochvíl,A-Pál,S ICCF 2014 1-0 (28)} ) (2. Bc4 d5 (2... d6 3. Bb5+ Ke7 4. Nh3 c6 5. Be2 c5 6. Ng5 f6 7. Nf7 Kxf7 { 0-1 (7) Kondov,K-Dorn,P ICCF 2019}) (2... f6 3. Qf3 Nc6 4. g4 Bc5 5. g5 Qe7 6. gxf6 Qf8 7. fxg7 Qxg7 8. a4 Nb4 9. Kd1 d5 10. Bb3 Bg4 11. Qxg4 Qxg4+ 12. Ke1 Qg2 13. c3 Nd3+ 14. Ke2 {Fritsch,J-Fritsch,J ICCF 2015 0-1}) 3. Bb5+ (3. Be2 e4 4. Nc3 Qg5 5. b3 Qxg2 6. Nxd5 Qxh1 7. Kf1 Bh3+ 8. Ke1 Qxg1+ 9. Bf1 Qxf1# { 0-1 (9) Kosíková,A-Lisý,J (1854) ICCF 2011}) 3... c6 (3... Bd7 4. Bxd7+ Qxd7 5. Ne2 Nc6 6. O-O Nf6 7. d4 exd4 8. exd4 Bd6 9. Nbc3 a6 10. Bg5 O-O-O 11. Bxf6 gxf6 12. Nxd5 Bxh2+ 13. Kxh2 Qxd5 14. c3 Rhg8 15. Nf4 {Jacon,M (1746)-Nguyen,M (1979) ICCF 2018 0-1 (64)}) 4. Be2 Nf6 5. Nf3 Bd6 6. Ng5 h6 7. Nxf7 Qe7 8. Nxh8 Qf8 9. Ng6 Qf7 10. Nh8 Qf8 11. b3 Qxh8 {0-1 (11) Kondov,K-Stepora,M ICCF 2019}) (2. Nc3 d5 (2... Bb4 3. Nd5 (3. Bc4 Bxc3 4. bxc3 d5 5. Bb5+ c6 6. Bf1 Nf6 7. d4 exd4 8. cxd4 Ne4 9. Nf3 Qf6 10. Bd3 Nc3 11. Qd2 Nb5 12. O-O O-O {0-1 (12) Sofoulis,D-Alichniewicz,J ICCF 2017}) 3... Ba5 4. e4 Nf6 5. Nxf6+ Qxf6 6. Nf3 O-O 7. c3 b5 8. Bxb5 c6 9. Bd3 Na6 10. b4 Bb6 11. Bb2 d6 12. Qe2 Nc7 13. a3 Ne6 14. O-O {O'Hare,A (1601)-Gosling,D (1475) ICCF 2016 0-1 (38)}) (2... Nf6 3. Nb5 (3. d4 e4 4. Bc4 d5 5. Bb3 Bb4 6. h3 Nc6 7. Nge2 O-O 8. Bd2 Re8 9. O-O Be6 10. Nf4 Ne7 11. Nce2 Bd6 12. Nxe6 fxe6 13. f4 Nf5 14. Kh2 Kh8 {Strelecky,R-Smiley, W (1906) ICCF 2015 0-1 (29)}) (3. Bc4 Be7 4. Bd3 d5 5. b3 O-O 6. Nf3 Nc6 7. h4 e4 8. Ng5 exd3 9. cxd3 Nb4 10. d4 Nd3+ 11. Kf1 c5 12. dxc5 d4 13. Nce4 h6 14. Nxf6+ Bxf6 {O'Hare,A (1601)-Wakeham,M (1532) ICCF 2016 0-1}) 3... c6 4. f4 exf4 5. Nd4 Nd5 6. e4 Qh4+ {0-1 (6) Fritsch,J-Latta,R ICCF 2015}) 3. d4 (3. Bb5+ c6 4. Ba4 Nf6 5. d3 (5. a3 Nbd7 6. Nh3 d4 7. exd4 exd4 8. Ne2 Nc5 9. c3 Bxh3 10. gxh3 Qa5 11. Bb3 Nd3+ 12. Kf1 Qf5 13. f4 Qxh3+ 14. Kg1 Bc5 15. Nxd4 O-O-O 16. Qe2 Rxd4 {Pye,J-Elias,H ICCF 2010 0-1}) 5... b5 6. Bb3 Bb7 7. Nh3 Nbd7 8. d4 Bb4 9. Bd2 O-O 10. O-O c5 11. Ne2 Bxd2 12. Qxd2 c4 13. Bxc4 dxc4 14. c3 Ne4 { O'Hare,A (1760)-Dunn,J (1679) ICCF 2013 0-1}) (3. f4 exf4 4. Nf3 fxe3 5. Qe2 Nf6 6. Qxe3+ Be7 7. Qg5 O-O 8. d4 Re8 9. Bb5 Nfd7 10. Qf5 Nb6 11. Qh5 g6 12. Qh6 Bg5+ 13. Bxe8 Qxe8+ 14. Kd1 Bxh6 {Pajuelo,J-Dmitrieva,G (2201) ICCF 2012 0-1 (28)}) 3... e4 4. g3 Nf6 5. Bg2 c6 6. Nh3 Bg4 7. Ne2 h6 8. O-O Qc8 9. Nhf4 g5 10. h3 Bd7 11. c3 Na6 12. b4 Nc7 13. Nxd5 cxd5 {O'Hare,A (1654)-Allport,A ICCF 2015 0-1 (39)}) (2. Qh5 Nc6 (2... Qe7 3. Nf3 g6 4. Qxe5 Qxe5 5. Nxe5 Bg7 6. Ng4 h5 7. Be2 hxg4 8. Bxg4 Rh4 9. h3 Nf6 10. f3 Nxg4 11. fxg4 d6 12. Nc3 Bxg4 13. Nd5 Kd7 14. Rf1 {Kosíková,A-Klein,J (1607) ICCF 2011 0-1 (51)}) (2... Qf6 3. Nf3 Nc6 4. Qh3 d6 5. g4 e4 6. Nd4 Nxd4 7. exd4 Qxd4 8. c3 Qf6 9. Qe3 Bxg4 10. Qxe4+ Qe6 11. Qxe6+ fxe6 12. Bg2 Nf6 13. Bxb7 Rb8 14. Bc6+ {Singh, G-Hardwick,M (1181) ICCF 2019 0-1}) 3. a4 (3. Bc4 d5 4. Bb5 Bd6 5. Nc3 Nf6 6. Qe2 O-O 7. Nf3 e4 8. Ng5 Ne7 9. d3 h6 10. Nh3 a6 11. Ba4 b5 12. Bb3 c5 13. dxe4 Bxh3 14. gxh3 c4 {Kosíková,A-Kubis,F (1946) ICCF 2011 0-1 (25)}) (3. Qf3 d5 4. Nc3 Nf6 5. Nxd5 Nxd5 6. Bc4 Be6 7. Nh3 Be7 8. e4 Nd4 9. Qd3 Nb4 10. Qg3 Nbxc2+ 11. Kd1 Bxc4 12. Qxg7 Be2# {0-1 (12) Oganisyan,T-Nascimento,J ICCF 2017}) 3... Nf6 4. Qd1 d5 5. b3 a6 6. Ba3 Bd6 {0-1 (6) De,S-Driessen,B (2025) ICCF 2017}) ( 2. Bb5 a6 (2... Nf6 3. Qf3 e4 4. Qh3 c6 5. Bc4 d5 6. Qg3 Bd6 7. Qxg7 Rg8 8. Qh6 Bf5 9. Bb3 Ng4 10. h3 Nxh6 11. Nc3 Na6 12. d4 Nb4 13. a3 Na6 14. Bd2 {Milazzo, J-Severgnini,A ICCF 2018 0-1 (31)}) 3. Ba4 b5 4. Bb3 Nf6 5. Nf3 Nc6 6. Ng5 d5 7. d4 exd4 8. exd4 Bd6 9. O-O O-O 10. Nc3 Be6 11. Qf3 Nxd4 12. Qd1 Nxb3 13. axb3 h6 {Gott,D-Pomeroy,L (1800) ICCF 2019 0-1 (42)}) (2. Be2 b6 (2... d6 3. Kf1 Nf6 4. d4 Be7 5. dxe5 dxe5 6. Qxd8+ Bxd8 7. b3 O-O 8. Nf3 Nc6 9. Bb2 e4 { 0-1 (9) Konovalenko,A (2110)-Kruk,S (1695) ICCF 2018}) (2... Qg5 3. Kf1 d5 4. e4 dxe4 5. d3 Qd8 6. dxe4 Qxd1+ 7. Bxd1 Nf6 8. Nf3 Bd6 9. Bg5 O-O 10. Nc3 Be6 11. Be2 Nbd7 12. Nd2 h6 13. Be3 Bc5 14. Bxc5 {Neborak,Y (2322)-Poleshchuk,N (2482) ICCF 2018 0-1 (54)}) (2... e4 3. Kf1 d5 4. d3 Bd6 5. Nc3 Nf6 6. dxe4 dxe4 7. Nb5 O-O 8. Nxd6 cxd6 9. b3 Qb6 10. Bb2 d5 11. h4 Rd8 12. Nh3 Bxh3 13. Rxh3 Ne8 14. Kg1 {Trofimov,V (2418)-Kokarev,A (1997) ICCF 2018 1-0 (37)}) (2... Bc5 3. Kf1 Nc6 4. c4 Nf6 5. a3 a5 6. d4 exd4 7. exd4 Bxd4 8. Nf3 Ba7 9. Be3 O-O 10. Bxa7 Rxa7 11. Kg1 d6 12. Nc3 Re8 13. h3 Ra8 14. Qc2 {Kokarev,A (1997) -Shevchenko,A (2195) ICCF 2018 0-1 (52)}) 3. h3 Bb7 4. e4 Bxe4 5. Nf3 d6 6. d3 Bb7 7. O-O Nf6 8. Bg5 h6 9. Bh4 Nbd7 10. Nbd2 Be7 11. Re1 Nd5 12. Bxe7 Nxe7 13. b4 c5 {Arezki,M (1938)-Houssem,B (1672) ICCF 2010 1-0}) (2. c3 d5 3. Nf3 e4 4. Nd4 c5 5. Nb5 a6 6. N5a3 Nf6 7. f3 exf3 8. gxf3 Be7 9. c4 O-O 10. Rg1 Re8 11. b3 Nh5 12. Ke2 Nf4+ 13. exf4 Bh4+ {Whittle,P (1311)-Strelecky,R (1564) ICCF 2018 0-1}) (2. Ne2 d5 3. Nec3 c6 4. Qf3 Qh4 5. d4 exd4 6. Nxd5 cxd5 7. Qxd5 Nc6 8. Be2 Nf6 {0-1 (8) Labák,T-Nika,O ICCF 2010}) (2. g3 Bc5 3. Bg2 Nc6 4. Kf1 Nf6 5. a3 d5 6. b4 Bd6 7. b5 Ne7 8. Bb2 O-O 9. f4 Nf5 10. fxe5 Ng4 11. Ke1 Bxe5 12. Bxe5 Nxe5 13. Nf3 Re8 {Rychkov,A-Shevchenko,A (2195) ICCF 2018 0-1 (50)}) (2. h4 d5 3. d3 Nf6 4. b3 Nc6 5. Rh2 d4 6. exd4 Nxd4 7. a3 Bc5 8. b4 Ng4 9. bxc5 Nxh2 10. a4 Bg4 11. f3 Qxh4+ 12. g3 Qxg3+ 13. Kd2 Nhxf3+ {Hara,S-Hotárek,J (1530) ICCF 2015 0-1}) 2... Nc6 (2... e4 3. Nd4 (3. Ne5 Nf6 4. c3 d6 (4... d5 5. h3 Bd6 6. Ng4 O-O 7. b4 Nbd7 8. Ba3 h5 9. Nxf6+ Nxf6 10. Qb3 c6 11. b5 c5 12. c4 Be5 13. Nc3 b6 14. Be2 d4 15. exd4 Bxd4 16. Rc1 {Laskowski,M-Molinet Escudero,C ICCF 2014 0-1}) 5. Nc4 Nc6 6. f4 Be7 7. Be2 Be6 8. Qc2 d5 9. Ne5 Nxe5 10. fxe5 Nd7 11. O-O Nxe5 12. b4 O-O 13. Na3 c6 14. Bb2 Bd6 {Johansson,R (1631)-Saharinen,P (1978) ICCF 2012 0-1}) 3... d5 (3... Nc6 4. Nxc6 bxc6 5. Nc3 d5 6. d3 f5 7. d4 Bb4 8. Bd2 Bd6 9. g3 Nf6 10. Bg2 Ba6 11. Ne2 O-O 12. O-O Rb8 13. b3 Qe7 14. Bh3 g6 15. Re1 {O'Hare,A (1741)-Flewelling,H ICCF 2013 0-1 (53)} ) (3... c5 4. Nf5 d5 5. d4 Bxf5 6. g4 Be6 7. Qe2 c4 8. Nc3 Nf6 9. g5 Bg4 10. Qd2 Nh5 11. Be2 Bxe2 12. Qxe2 Qxg5 13. Bd2 Bb4 14. Nb5 Bxd2+ 15. Qxd2 {Chugg,M (1231)-Aannevik,B (1104) ICCF 2020 0-1 (42)}) (3... Bc5 4. Nc3 Bxd4 5. exd4 d5 6. d3 exd3 7. Bxd3 Ne7 8. g4 g6 9. h3 O-O 10. Be3 Re8 11. O-O c6 12. Qf3 Rf8 13. Bh6 Nd7 14. Bf5 Re8 15. b3 {Colnago,L-Parodi,P ICCF 2014 0-1 (47)}) (3... g6 4. c3 c5 5. Nb5 a6 6. N5a3 Bg7 7. d3 Nf6 8. c4 O-O 9. Be2 d5 10. Nc3 d4 11. exd4 exd3 12. Qxd3 cxd4 13. Nd5 Nxd5 14. cxd5 Qxd5 15. f3 {Wójcik,L (1354) -Corbin,J ICCF 2019 0-1 (48)}) 4. Nc3 (4. Nb3 Nf6 5. Nc3 Bd6 6. d3 O-O 7. Nb5 Be7 8. dxe4 Nxe4 9. Bd3 a6 10. Bxe4 dxe4 11. Qxd8 Bxd8 12. Nc3 Re8 13. Bd2 Nc6 14. O-O-O Bg4 15. Rdf1 Bf5 {Albizu Garitano,A-Gil Barba,J ICCF 2006 0-1}) 4... Nf6 (4... c5 5. Nb3 Nf6 6. d3 exd3 7. cxd3 Nc6 8. Be2 Be7 9. O-O O-O 10. e4 d4 11. Nb5 a6 12. Na3 b5 13. Bg5 Qb6 14. Qc1 Be6 15. Bxf6 gxf6 16. Qh6 {Sebestová, J-Svaralová,M ICCF 2010 0-1 (51)}) 5. Qe2 (5. Be2 c5 6. Nb3 Be7 (6... d4 7. exd4 cxd4 8. Nb1 d3 9. cxd3 exd3 10. Bf3 Bd6 11. O-O O-O 12. Re1 Nc6 13. Nc3 Ne5 14. Re3 Re8 15. Be4 a5 16. a4 Neg4 17. g3 Nxe3 18. fxe3 {Kaytazki,L (1418) -Dimitrov,D (2256) ICCF 2019 0-1 (36)}) 7. f3 Nc6 8. d3 exd3 9. cxd3 O-O 10. O-O d4 11. Na4 b6 12. f4 Nb4 13. exd4 cxd4 14. Bf3 Rb8 15. Bd2 Qd7 16. Re1 Nxd3 {Ott,P (1598)-Pfund,R ICCF 2019 0-1 (27)}) (5. b3 a6 6. Bb2 c5 7. Ncb5 Bd7 8. Nc3 cxd4 9. exd4 Bd6 10. d3 O-O 11. Be2 Qc7 12. dxe4 Bb4 13. O-O Bxc3 14. Bxc3 Qxc3 15. e5 Ne4 16. Bd3 Nc6 {Cviková,K (1684)-Schöneckerová Kovácová,E ICCF 2010 0-1}) 5... c6 6. h3 Be7 7. Nb3 O-O 8. d4 b6 9. Bd2 a5 10. O-O-O a4 11. Na1 b5 12. a3 Ba6 13. f4 b4 14. Nxa4 {Leutterová,A-Kubis,F ICCF 2010 0-1}) (2... Bd6 3. d4 Nf6 4. dxe5 Bxe5 5. Nxe5 d6 6. Nc4 Qe7 {0-1 (6) Hobbs,M-Beckett,J ICCF 2006}) 3. Be2 (3. d4 e4 4. Nfd2 d5 (4... f5 5. Be2 Nf6 6. c4 Be7 7. Nc3 O-O 8. a3 d6 9. O-O Qe8 10. b4 Bd7 11. Nb3 Qg6 12. Bb2 a6 13. Kh1 Qh6 14. Rc1 Bd8 15. Qd2 Re8 16. Rfe1 {De Backer,Y-Butu,S ICCF 2018 0-1 (26)}) 5. c4 Be6 6. Nc3 Nf6 7. cxd5 Nxd5 8. Ndxe4 Bb4 9. a3 Nxc3 10. bxc3 Be7 11. Qc2 O-O 12. Bd3 Bf5 13. Rb1 Rb8 14. O-O Bd6 {De Backer,Y-Kreveld,F (1327) ICCF 2018 1-0 (27)}) (3. d3 d5 4. Nc3 (4. d4 Bg4 5. Be2 Nf6 6. Nxe5 Bxe2 7. Qxe2 Nxe5 8. dxe5 Ne4 9. Qb5+ c6 10. Qxb7 Qc8 11. Qxc8+ Rxc8 12. Ke2 Be7 13. Nd2 Nxd2 14. Bxd2 O-O 15. Bc3 c5 {Satskov,V-Martínez Camacho,V ICCF 2018 1-0 (37)}) 4... Nf6 5. Be2 Bb4 6. Nxe5 Nxe5 7. O-O O-O 8. f4 Nc6 9. Qe1 d4 10. Bd2 dxc3 11. bxc3 Bc5 12. Kh1 Bg4 13. h3 Bxe2 14. Qxe2 Nd7 {Limoli,P (1561)-Rice,R (1367) ICCF 2017 0-1 (35)} ) (3. Bc4 d5 4. Bb3 Nf6 5. O-O g6 6. Ba4 e4 7. Nd4 Bd7 8. b3 Nxd4 9. exd4 b5 10. Nc3 bxa4 11. bxa4 Bg7 12. Ba3 Bg4 13. f3 Bf5 14. Qe2 Bf8 {Horacek,C-Selby, R (1368) ICCF 2013 0-1 (31)}) 3... d5 4. O-O Nf6 (4... d4 5. exd4 exd4 6. Bc4 Bc5 7. d3 Nf6 8. Re1+ Kd7 9. Ng5 Re8 10. Nxf7 Rxe1+ 11. Qxe1 Qf8 12. Qe6# { 1-0 (12) Nossein,F (1595)-Carlier,P (1927) ICCF 2011}) 5. d4 exd4 (5... Bd6 6. c4 exd4 7. cxd5 Nxd5 8. exd4 Be6 9. Nc3 h6 10. Re1 O-O 11. Bd2 Re8 12. h3 a6 13. Bd3 Qd7 14. Be4 Nce7 15. Bxd5 Nxd5 16. Ne4 Rad8 17. Nc5 {De Backer,Y-Cowan, A ICCF 2018 0-1 (88)}) 6. exd4 Bd6 7. Nc3 a6 8. Bg5 Be6 9. Bd3 h6 10. Bh4 g5 11. Bg3 Qe7 12. Re1 O-O-O 13. a3 {De Backer,Y-Dimitrov,G ICCF 2018 0-1 (66)}) ( 1... Nc6 2. g3 (2. c3 e5 3. g3 (3. h4 Nf6 4. f3 d6 5. g4 h5 6. Bd3 hxg4 7. fxg4 Bxg4 8. Qa4 Be7 9. Be4 Nxe4 10. Qxe4 Qd7 11. a4 Bf5 12. Qf3 Bg4 13. Qg3 Qf5 { 0-1 (13) Singh,A-Asi,E ICCF 2019}) 3... Nf6 4. e4 Nxe4 5. Bg2 Nf6 6. Bxc6 bxc6 7. Ne2 d5 8. d4 e4 9. Nf4 Bd6 {0-1 (9) Singh,G-Asi,E ICCF 2019}) (2. Qf3 e6 3. Nc3 Nb4 4. Bd3 Qf6 5. Nb5 Qe5 6. a3 Nxd3+ 7. cxd3 Qxb5 8. d4 d6 9. Ne2 Qf5 10. Qxf5 exf5 11. d3 Nf6 12. Bd2 d5 13. O-O Bd7 {Sebestová,J-Králiková,G ICCF 2009 0-1 (79)}) (2. Bb5 e5 3. a3 Nf6 4. Nf3 e4 5. Ng5 d5 6. Bxc6+ bxc6 7. O-O Bd6 8. f4 h6 9. Nh3 Bxh3 10. gxh3 g5 11. d4 Rg8 12. f5 g4 13. h4 Nh7 {Strelecky,R (1565)-Pennella,D ICCF 2017 0-1}) (2. Bc4 e6 3. a3 Ne5 4. Be2 Nf6 5. d4 Nc6 6. Bb5 d5 7. Nd2 Bd7 8. Ngf3 Bd6 9. Ng5 Qe7 10. Qf3 O-O-O 11. Nb3 Ne4 12. Nxe4 dxe4 13. Qxe4 b6 {Kosíková,A-Cviková,K (1684) ICCF 2010 1-0}) (2. Bd3 e5 3. Nc3 Nh6 4. Be4 d6 5. Nf3 d5 6. Nxd5 Be6 7. Nxe5 Nxe5 8. Nc3 Bg4 {0-1 (8) Kondov, K-Giannoulis,A ICCF 2019}) (2. Be2 d5 3. Nf3 Ne5 4. O-O Nxf3+ 5. Bxf3 e5 6. d3 Nf6 7. e4 dxe4 8. d4 exf3 9. dxe5 Qxd1 10. exf6 Kd8 11. Rxd1+ Bd7 12. Bg5 Kc8 13. gxf3 Rg8 {Trofimov,V (2415)-Rumyantsev,V (2134) ICCF 2017 1-0 (44)}) 2... e5 3. Bg2 d5 4. Ne2 Nf6 (4... h5 5. O-O h4 6. d4 Qg5 7. e4 Qh5 8. g4 Bxg4 9. f3 O-O-O 10. fxg4 Qxg4 11. h3 Qg6 12. exd5 Nb4 13. Nbc3 Nxc2 14. Kh1 Nxa1 15. dxe5 Nh6 16. Bf4 {Kozlov,A (2382)-Rumyantsev,V (2134) ICCF 2017 1-0 (27)}) 5. O-O Bf5 (5... Bd6 6. b3 Be6 7. Bb2 Qd7 8. d3 a6 9. c4 O-O 10. Nbc3 d4 11. Ne4 Nxe4 12. dxe4 Bc5 13. exd4 Bxd4 14. Bxd4 Nxd4 15. Nxd4 Qxd4 16. Qe2 Rad8 17. Rad1 { Serec,M-Podhostnik,M ICCF 2006 0-1 (63)}) 6. b3 Qd7 7. Bb2 h5 8. Re1 h4 9. d3 O-O-O 10. f4 Ng4 11. Qd2 hxg3 12. Nxg3 exf4 13. h3 {Serec,M-Komarica,B ICCF 2006 1-0}) (1... Nf6 2. g3 (2. Nc3 g6 (2... b6 3. e4 Bb7 4. e5 Ne4 5. Nxe4 Bxe4 6. d4 e6 7. Qe2 Bb7 8. Nf3 c5 9. Bf4 Nc6 10. O-O-O Nxd4 11. Nxd4 cxd4 12. h4 Bc5 13. Qg4 {1/2 (13) Mathe,I (2435)-Nissen,H (1986) ICCF 2008}) 3. d4 Bg7 4. Bc4 (4. Bd3 d5 5. Qf3 O-O 6. h4 h5 7. Nh3 {1-0 (7) Bautista,E-Lüdeking,J ICCF 2013}) 4... d5 5. Nxd5 Nxd5 6. Qd3 O-O 7. Nf3 Nc6 8. Bd2 Nb6 9. h4 e5 10. d5 e4 11. Qb3 exf3 12. dxc6 fxg2 {0-1 (12) Cviková,K (1622)-Schöneckerová Kovácová,E (1953) ICCF 2012}) (2. d3 d5 (2... g6 3. Nd2 (3. b3 Bg7 4. Bb2 O-O 5. g3 d6 6. Ne2 Bg4 7. Bg2 c6 8. Nd2 e5 9. O-O Na6 10. Rb1 Qd7 11. f3 Be6 12. d4 Rad8 13. c4 Bh3 14. dxe5 dxe5 {Serec,M-Podhostnik,M ICCF 2006 0-1}) (3. f3 Bg7 4. c3 O-O 5. e4 d6 6. h3 Nc6 7. a3 e5 8. Qe2 Nh5 9. h4 Ng3 10. Qf2 Nxh1 11. Qe3 Qxh4+ 12. Kd1 Be6 13. g4 Bb3+ 14. Ke2 Ng3+ {Hara,S-Miskimmin,C ICCF 2015 0-1}) 3... Bg7 4. Ne2 O-O 5. Ng3 d5 6. Be2 Nc6 7. O-O e5 8. Re1 h5 9. Nf3 e4 10. Nd4 h4 11. Nxc6 bxc6 12. Nf1 h3 13. dxe4 Nxe4 14. Ng3 {Nunnally,R-Sciarretta,R ICCF 2007 0-1 (25)}) (2... c5 3. Be2 g6 4. Nf3 Bg7 5. O-O O-O 6. c3 Nc6 7. Nbd2 d6 8. d4 cxd4 9. cxd4 e5 10. dxe5 dxe5 11. b3 e4 12. Nxe4 Nxe4 13. Bd3 Nc3 14. Qd2 { De Backer,Y-Howard,I ICCF 2017 0-1}) 3. c3 (3. Ne2 e5 4. Ng3 (4. g3 Be6 5. Bg2 Qd7 6. Nd2 Bh3 7. Bxh3 Qxh3 8. Ng1 Qf5 9. Qf3 Qe6 10. Ne2 Nc6 11. a3 h5 12. h3 O-O-O 13. Qg2 e4 14. d4 Na5 15. b4 Nc4 {Garnica,H (1710)-Merrheim,X ICCF 2011 0-1 (30)}) 4... Nc6 5. Be2 Bc5 6. Nd2 Be6 7. Nb3 Bd6 8. Bd2 Qe7 9. c3 O-O-O 10. Qc2 g6 11. a3 h5 12. h4 Rhg8 13. d4 e4 14. Bb5 Bd7 {Gomez,P-Mills,T (1614) ICCF 2012 0-1 (34)}) (3. Nf3 c5 4. Nc3 e6 (4... Nc6 5. g3 e5 6. Bg2 Be7 7. O-O O-O 8. Qe2 Bg4 9. Qe1 Rc8 10. e4 d4 11. Ne2 Bxf3 12. Bxf3 Nb4 13. Qd1 c4 14. Bg2 cxd3 15. cxd3 Qb6 16. b3 {O'Hare,A (1525)-Wall,M ICCF 2019 0-1}) 5. Be2 Nc6 6. Bd2 a6 7. O-O Bd6 8. d4 O-O 9. a3 e5 10. dxe5 Nxe5 11. Nxe5 Bxe5 12. f4 Bc7 13. Na4 Qe7 14. b4 c4 {Brodie,P (1767)-Mosrati,N (2310) ICCF 2018 0-1 (50)}) 3... e5 4. c4 dxc4 5. dxc4 Qxd1+ 6. Kxd1 Bf5 7. Nc3 Nc6 8. f3 O-O-O+ {0-1 (8) Ipekyilmaz,E (1483)-Hansen,J ICCF 2014}) (2. Be2 e5 3. Nc3 (3. c4 Be7 4. Nc3 d5 5. d4 exd4 6. exd4 dxc4 7. Nf3 Be6 8. O-O O-O 9. Ng5 Bd5 10. Nf3 Be6 11. Qc2 Nc6 12. Be3 Nb4 13. Qd1 Nc2 14. Kh1 Nxa1 {Szymanski,R (2360)-Zidu,J (2610) ICCF 2020 0-1 (32)}) (3. Kf1 Be7 4. d4 e4 5. d5 d6 6. c4 b6 7. g4 g6 8. g5 O-O 9. gxf6 Bxf6 10. Qc2 Bf5 11. h3 Nd7 12. Bg4 Bxg4 13. hxg4 Ne5 14. Nd2 Nxc4 { Szymanski,R (2360)-Major,B ICCF 2020 1-0 (28)}) 3... d5 4. d4 e4 5. f3 c6 6. a3 Bd6 7. Na2 b5 8. Nc3 O-O 9. Nh3 exf3 10. Bxf3 Bxh3 11. gxh3 Re8 12. Qe2 Nbd7 13. Qg2 Nf8 {Kaytazki,L (1421)-Kirkov,T (2322) ICCF 2019 0-1 (52)}) (2. Bc4 d5 (2... e6 3. Nf3 d5 4. Bb3 Nc6 5. O-O Bd6 6. Re1 O-O 7. d3 Ne7 8. Nc3 Ng6 9. Bd2 Re8 10. e4 dxe4 11. Nxe4 Be7 12. Ng3 Bd6 13. Bg5 h6 14. Be3 {Bishop,C (1706) -Liles,C (1553) ICCF 2017 1-0 (27)}) 3. Bb5+ c6 4. Ba4 e5 5. Nf3 e4 6. Ne5 b5 7. Bb3 c5 8. Nc3 c4 9. Nxb5 cxb3 10. cxb3 Ba6 11. Nd4 Nbd7 {0-1 (11) Ondrásko, V-Uchal,M ICCF 2010}) (2. f3 e5 (2... e6 3. d3 c5 4. c3 Nc6 5. g3 d5 6. f4 Bd6 7. h3 O-O 8. Bd2 b6 9. a4 Bb7 10. h4 Qe7 11. Nh3 Rfe8 12. Ng1 Rad8 13. h5 e5 14. d4 {Hara,S-Wilson,N (1578) ICCF 2015 0-1}) (2... g6 3. g4 d6 4. Bb5+ c6 5. Bd3 e5 6. e4 d5 7. exd5 cxd5 8. b3 Nc6 9. c3 Bg7 10. Bb5 O-O 11. Ba3 Re8 12. Bxc6 bxc6 13. Nh3 e4 14. c4 {Singh,A-Dunlap,H (1415) ICCF 2019 0-1}) 3. e4 Nxe4 4. fxe4 Qh4+ 5. g3 Qxe4+ 6. Qe2 Qxh1 7. Qg2 Qxg2 8. Bxg2 Bc5 9. Ne2 c6 10. a3 d5 11. b4 Bd6 12. Bb2 O-O 13. d3 Be6 {Singh,A-Kuznetsov,A ICCF 2019 0-1}) (2. Bd3 d5 3. Nf3 Nc6 4. O-O e5 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Nxe5 Bb5 8. d3 Bd6 9. f4 Qe7 10. Nc3 Bd7 11. Nxd7 Nxd7 12. Nxd5 Qh4 13. g3 Qh3 {De Backer,Y-Takahashi,Y (1530) ICCF 2018 0-1 (47)}) (2. h3 e5 3. Nf3 e4 4. Ne5 d6 5. Ng4 Nxg4 6. hxg4 Qg5 7. Be2 c6 8. Nc3 d5 9. d3 Bb4 10. Bd2 Bxc3 11. Bxc3 Be6 12. dxe4 dxe4 13. Qd2 Nd7 {Kosíková,A-Boldocki,M ICCF 2011 0-1 (29)}) 2... d5 (2... Nc6 3. Bg2 e5 4. Bxc6 dxc6 5. b3 Bd6 6. Bb2 O-O 7. d3 Bb4+ 8. Bc3 a5 9. Bxb4 axb4 10. a4 bxa3 11. Rxa3 Rxa3 12. Nxa3 Qd5 13. f3 Qa5+ 14. Qd2 {Moraru,F-Rivollier,F (1697) ICCF 2018 0-1}) 3. Bg2 e5 4. Ne2 (4. b3 Bd6 5. Nc3 (5. Ne2 c5 6. Bb2 O-O 7. O-O Nc6 8. f4 Re8 9. Nbc3 d4 10. Nb5 Bb8 11. fxe5 Bxe5 12. Na3 Bg4 13. Nc4 d3 14. cxd3 Bxb2 15. Nxb2 Nd4 16. exd4 Bxe2 {Srinivas,U-Kotyurgin,I (2187) ICCF 2016 0-1}) 5... c6 6. Nge2 Qe7 7. f4 h5 8. h3 d4 9. Na4 dxe3 10. dxe3 exf4 11. gxf4 O-O 12. Bb2 Bb4+ 13. c3 Rd8 14. Qc2 Bd6 {0-1 (14) Srinivas,U-Volozhin,M ICCF 2017}) 4... Bd6 (4... Be7 5. d3 O-O 6. O-O Bg4 7. h3 Be6 8. Nd2 Nc6 9. b3 Qd7 10. Kh2 Rad8 11. Bb2 Bf5 12. g4 Be6 13. f4 exf4 14. Nxf4 Bxg4 15. hxg4 Nxg4+ 16. Kh1 {Garnica,H (1710)-Desquiens,S (1933) ICCF 2011 1-0 (36)}) (4... c6 5. O-O Bd6 6. d4 e4 7. f3 exf3 8. Bxf3 b5 9. e4 dxe4 10. Bxe4 O-O 11. Bg5 Be7 12. Bg2 Bg4 13. Qd2 Ne4 14. Bxe4 Bxg5 {0-1 (14) Wedel,L (2285)-Kotyurgin,I (2281) ICCF 2020}) 5. O-O O-O 6. d3 Qe7 7. b3 c6 8. c4 dxc4 9. bxc4 Bf5 10. Nbc3 Nbd7 11. f4 exf4 12. gxf4 Rad8 13. Ng3 {Garnica,H (1710)-Neusch,J (2038) ICCF 2011 1-0}) (1... g6 2. e4 (2. d3 Bg7 3. c3 (3. d4 Nf6 4. Bd3 O-O 5. e4 c5 6. c3 cxd4 7. cxd4 Nc6 8. Ne2 Qb6 9. e5 Ng4 10. h3 Nxf2 11. Kxf2 Nxd4 12. Be3 Bxe5 13. Nbc3 Qxb2 14. Rb1 Qa3 {Ipekyilmaz,E (1686)-Hansen,K (1786) ICCF 2018 0-1 (81)}) (3. Be2 d5 4. c3 Nf6 5. Nf3 O-O 6. O-O c5 7. Nbd2 Nc6 8. Kh1 e5 9. Ng1 e4 10. dxe4 dxe4 11. Nb3 Qe7 12. Qc2 Rd8 13. Rd1 Bf5 14. Rxd8+ Rxd8 {Armstrong,J (1583)-Langenegger,T (1779) ICCF 2014 0-1 (31)}) 3... Nf6 4. Ne2 O-O 5. Ng3 d5 6. Be2 c5 7. Nd2 Nc6 8. Nb3 b6 9. Bd2 Re8 10. Qc2 Bb7 11. f3 a5 12. a4 Qd6 13. c4 Nb4 {Gomez,P-Versteeg,S ICCF 2012 0-1 (26)}) (2. Be2 b6 (2... Bg7 3. Nf3 e5 4. O-O e4 5. Ne1 Nf6 6. f3 d5 7. c4 O-O 8. cxd5 exf3 9. Nxf3 Nxd5 10. Nc3 c5 11. Kh1 Nc6 12. Qb3 Be6 13. Qb5 Ncb4 14. Qxc5 {Poleshchuk,N (2482)-Neborak,Y (2306) ICCF 2018 1-0}) 3. Nf3 Bb7 4. O-O Nc6 5. d4 d5 6. c4 Bg7 7. cxd5 Nb8 8. e4 Kf8 9. Bf4 Nf6 10. Nc3 c6 11. dxc6 Bxc6 12. Kh1 Nxe4 13. Rc1 Nxc3 {Kokarev, A (1997)-Rychkov,A ICCF 2018 1-0}) (2. Nc3 Bg7 3. Nb5 a6 4. Nc3 Nf6 5. d4 O-O 6. Nf3 b5 7. Bd3 d6 8. e4 c5 9. Be3 cxd4 10. Nxd4 Bb7 11. Qf3 Nc6 12. O-O Nd7 13. Nde2 Nce5 {O'Hare,A (1741)-Wakeham,M (1720) ICCF 2013 0-1 (41)}) (2. c4 e5 3. d4 exd4 4. Qxd4 Nf6 5. b3 Nc6 6. Qb2 Rg8 7. Nf3 d5 8. Bd2 Be6 9. Be2 Ne4 10. cxd5 Bxd5 11. Nc3 Qf6 12. O-O O-O-O 13. Qc2 Nxd2 {Pfaff,H (2419)-Ludgate,A (2500) ICCF 2016 1/2}) (2. Qf3 Nc6 3. Bc4 Nf6 4. Nh3 d5 5. Bb5 Bg7 6. Ng5 e5 7. d4 O-O 8. O-O Nh5 9. Nh3 exd4 10. Bxc6 bxc6 11. exd4 Bxd4 12. Nc3 Rb8 13. Bh6 Re8 {Sebestová,J-Schöneckerová Kovácová,E ICCF 2010 0-1 (53)}) (2. Qg4 Nf6 3. Qc4 d5 4. Qa4+ c6 5. Nf3 Bg7 6. Ne5 O-O 7. Nf3 Qc7 8. Ng5 e5 9. Qh4 Bf5 10. Bd3 e4 11. b3 Qe5 12. f4 Qxa1 13. Kd1 exd3 {Smith,J-Wilson,M (1808) ICCF 2016 0-1 (34)}) (2. Bb5 a6 3. Bc4 d5 4. Bb3 Bg7 5. Nf3 Nf6 6. Ba4+ b5 7. Bb3 c5 8. d4 c4 9. Ne5 Qd6 10. c3 cxb3 11. axb3 Nc6 12. e4 Nxe5 13. dxe5 Qxe5 {Gott,D-Beckett, P (1934) ICCF 2019 0-1 (32)}) (2. h4 Nf6 3. g4 d5 4. g5 Nh5 5. Bb5+ Nc6 6. Qe2 Bg7 7. e4 O-O 8. c4 Nf4 9. Qe3 Ng2+ 10. Ke2 Nxe3 11. dxe3 dxe4 12. c5 Bg4+ 13. f3 exf3+ {Morra,C-Adrian,S ICCF 2020 0-1 (27)}) 2... c5 (2... d5 3. exd5 Nf6 4. c4 c6 5. dxc6 Nxc6 6. Nf3 e5 7. Nc3 e4 8. Ng5 Bf5 9. Be2 Bg7 10. O-O O-O 11. f3 exf3 12. Nxf3 Nd4 13. Nxd4 Qxd4+ 14. Kh1 {Josefsson,K (2227)-Fordham-Hall,C (2362) ICCF 2012 0-1 (43)}) (2... d6 3. d4 Nf6 4. Nc3 Bg7 5. Nf3 O-O 6. Bd3 Bg4 7. h3 Bxf3 8. Qxf3 Nfd7 9. d5 c6 10. O-O Ne5 11. Qe2 Nbd7 12. Bg5 Re8 13. Rab1 Rc8 14. dxc6 {Josefsson,K (2199)-Söderberg,K (2301) ICCF 2013 1/2 (34)}) 3. Nf3 Nc6 (3... Bg7 4. c3 d5 5. exd5 Qxd5 6. d4 Nf6 7. Na3 O-O 8. Bc4 Qe4+ 9. Be3 Ng4 10. Qe2 Nxe3 11. fxe3 Bh6 12. Nc2 Bf5 13. O-O-O Qxc2+ 14. Qxc2 Bxe3+ 15. Qd2 { Josefsson,K (2232)-Jepson,C (2272) ICCF 2011 1/2 (37)}) 4. Bb5 Bg7 5. O-O Nf6 6. Nc3 O-O 7. e5 Ng4 8. Bxc6 bxc6 9. Re1 Qc7 10. Qe2 d6 11. exd6 exd6 12. b3 Bd7 13. Bb2 {Josefsson,K (2254)-Melander,B (2239) ICCF 2010 1/2 (27)}) (1... e6 2. d3 (2. Nh3 g6 3. Qf3 Nc6 4. d4 Bg7 5. Nd2 d5 6. Bb5 Bd7 7. O-O Nf6 8. b3 Qe7 9. a4 O-O 10. Ba3 Qd8 11. Bxf8 Qxf8 12. Nf4 Nb4 13. Bxd7 Nxd7 {Sebestová, J-Cviková,K (1684) ICCF 2010 1-0}) 2... d5 3. Be2 (3. b3 Nf6 4. Be2 (4. g3 c5 5. c4 Nc6 6. Nc3 dxc4 7. bxc4 Be7 8. Rb1 O-O 9. e4 e5 10. h4 b6 11. a4 Bd7 12. Nf3 h6 13. Ra1 Bg4 14. Bg2 Nd4 15. h5 Nxh5 {Whittle,P (1311)-Close,G ICCF 2018 0-1}) 4... Be7 5. Qd2 O-O 6. Bf3 Nc6 7. d4 Bb4 8. c3 Bd6 9. Ba3 Bxa3 10. Nxa3 e5 11. O-O-O exd4 12. exd4 Qe7 13. Qb2 Bf5 14. Nb5 a6 {Limoli,P (1721)-Adabbo, G (1861) ICCF 2013 0-1 (34)}) (3. Ne2 Nf6 4. Ng3 e5 5. Be2 Nc6 6. Nd2 Bc5 7. Nb3 Be6 8. Nxc5 Bc8 9. Bd2 Qd6 10. Nb3 Be6 11. Nh5 Nxh5 12. Bxh5 d4 13. Bg4 dxe3 14. Bxe3 Qb4+ {Gomez,P-Spagnoli,L ICCF 2012 0-1 (53)}) 3... Nf6 4. Nf3 Be7 5. O-O c5 6. b3 O-O 7. Nc3 a6 8. d4 Nbd7 9. a4 b6 10. Qd3 Qc7 11. Ng5 h6 12. Nf3 Bd6 13. Bb2 {De Backer,Y-Muanip,M ICCF 2017 0-1 (32)}) (1... b6 2. d3 (2. Qe2 e6 3. Kd1 Nf6 4. f4 Be7 5. g4 d5 6. d3 O-O 7. g5 Ne8 8. h4 c5 9. Nf3 { 1-0 (9) Rumyantsev,V (2166)-Gurevskoi,D ICCF 2018}) (2. d4 Bb7 3. Nf3 d5 4. Bd3 e6 5. O-O Bd6 6. c4 dxc4 7. Bxc4 Nf6 8. Re1 O-O 9. Nbd2 c5 10. e4 Be7 11. e5 Nfd7 12. Nb3 a6 13. dxc5 Nxc5 {Andersen,J (2201)-Perry,W (2211) ICCF 2017 1/2 (28)}) (2. e4 Bb7 3. Nc3 c5 4. Nf3 e6 5. d4 cxd4 6. Nxd4 Nf6 7. Bd3 d6 8. Qe2 Be7 9. O-O O-O 10. f4 Nbd7 11. Kh1 Nc5 12. Rd1 Rc8 13. a4 a6 {Josefsson,K (2232)-Rosén,L (2327) ICCF 2011 0-1 (60)}) 2... Bb7 (2... e6 3. Nc3 d5 4. Nf3 Nf6 5. d4 Bb7 6. a3 c5 7. Be2 Nbd7 8. O-O Bd6 9. Nb5 Bb8 10. b3 a6 11. Nc3 O-O 12. Bb2 Bd6 13. Qd2 Qc7 14. Rfd1 {Brodie,P (1738)-Bennett,P (2352) ICCF 2017 0-1 (45)}) 3. Nf3 Nf6 4. Nc3 g6 5. g3 d5 6. b3 Bg7 7. Bg2 Ne4 8. dxe4 Bxc3+ 9. Bd2 Bxa1 10. Qxa1 f6 11. exd5 Bxd5 12. O-O Be4 13. c4 {Brodie,P (1736) -Schirmer,M (2341) ICCF 2019 0-1 (35)}) (1... c5 2. Bc4 (2. d3 g6 3. d4 Bg7 4. dxc5 Qa5+ 5. c3 Qxc5 6. e4 Nf6 7. Be3 Qc7 8. Na3 Nxe4 9. Nb5 Qd8 10. Qd3 d5 11. Qxd5 Nd6 12. Rd1 Be6 13. Nxd6+ exd6 {Ipekyilmaz,E (1686)-Harman,K (1594) ICCF 2018 1-0}) (2. f3 e6 3. f4 Nf6 4. Nf3 a6 5. Be2 b5 6. g3 Bb7 7. Rg1 Nc6 8. g4 h6 9. h3 g5 10. d3 Qc7 {0-1 (10) Ipekyilmaz,E (1483)-Mantu,E (1686) ICCF 2014}) (2. g3 Nc6 3. Bg2 e5 4. Ne2 g6 5. O-O Bg7 6. b3 d5 7. Bb2 Nge7 8. f4 O-O 9. d3 Nf5 10. Qd2 d4 11. e4 Ne3 12. Rf3 f5 13. c3 fxe4 {Serec,M-Pirs,M ICCF 2006 0-1 (28)}) 2... Nc6 (2... e6 3. Nc3 d5 4. Bb5+ Bd7 5. Nf3 Nc6 6. d4 cxd4 7. exd4 Nf6 8. Bf4 a6 9. Bd3 Qb6 10. O-O Nxd4 11. Ne5 Qxb2 12. Ne2 Nxe2+ 13. Bxe2 Bc6 14. c4 {Cviková,K (1684)-Procházková,M ICCF 2010 0-1}) 3. Qh5 e6 4. Na3 d5 5. Bb5 Nf6 6. Qh4 Be7 7. Bxc6+ bxc6 8. Qa4 Qc7 9. Nf3 Rb8 10. c3 c4 11. Nd4 Bd7 12. Qc2 g6 13. b4 {Armstrong,J (1599)-Joko,B ICCF 2013 0-1 (62)}) (1... f5 2. Nc3 (2. b3 b6 3. Qf3 d5 4. Nc3 Nf6 5. Nh3 e6 6. Na4 Bd6 7. Bb2 O-O 8. c4 c6 9. cxd5 cxd5 10. Bxf6 Qxf6 11. Nc3 Bb7 12. Rd1 g5 13. Qh5 Be7 {Silec,Z-Gavrilovic, M (1593) ICCF 2009 0-1 (46)}) (2. f3 Nf6 3. d3 d5 4. e4 e5 5. exf5 Bxf5 6. Ne2 Nc6 7. Ng3 Bg6 8. f4 exf4 9. Ne2 Bb4+ 10. c3 Qe7 11. cxb4 Nxb4 12. a3 Nxd3+ 13. Qxd3 Bxd3 {Hara,S-Haillot,A (1838) ICCF 2015 0-1}) 2... Nf6 3. d4 e6 4. Nf3 Bb4 5. Bd2 Bxc3 6. Bxc3 d6 7. h4 b6 8. g3 Bb7 9. Rh2 Ng4 10. Rg2 O-O 11. Rg1 Nd7 12. Bh3 Ndf6 13. Rg2 {O'Hare,A (1601)-Ward,B (1687) ICCF 2016 0-1 (39)}) (1... b5 2. b4 e5 3. a3 d5 4. Bb2 g5 5. Bxe5 Nc6 6. Bd4 Nxd4 7. exd4 {1-0 (7) Cviková,K (1684)-Vánová,J ICCF 2010}) (1... d6 2. f3 Bf5 3. Kf2 e5 4. Ne2 Nc6 5. g4 Be6 6. Ng3 Qh4 7. d4 O-O-O 8. d5 f5 9. gxf5 Bxf5 10. dxc6 bxc6 11. Ba6+ Kd7 12. Ke2 Bh3 13. Rg1 {Chernov,I (2140)-Rychkov,A ICCF 2018 1/2 (71)}) (1... g5 2. Be2 Bg7 3. c3 h6 4. Nf3 Nc6 5. O-O d6 6. d4 Bg4 7. Nfd2 Bxe2 8. Qxe2 d5 9. Na3 e5 10. dxe5 Bxe5 11. e4 Qd6 12. g3 Nf6 13. Nb5 {Wójcik,L-Fernandez,Q (1455) ICCF 2019 1/2}) (1... h5 2. Nf3 Nf6 3. g3 e6 4. Nc3 d5 5. d3 Bb4 6. a3 Ba5 7. d4 c6 8. b4 Bb6 9. Bh3 Ng4 10. Ng1 Nf6 11. f4 g6 12. Nf3 Bd7 13. Nh4 { Giannoulis,A-Dorn,P ICCF 2019 1-0}) 2. Be2 (2. Bb5+ c6 3. Bd3 (3. Ba4 b5 4. Bb3 Nf6 5. a4 b4 6. c4 Bg4 7. f3 Bh5 8. g4 Bg6 9. Bc2 Bxc2 10. Qxc2 Na6 11. c5 e5 12. Qf5 Qe7 13. d4 exd4 14. g5 dxe3 {Morra,C-Almeida,C ICCF 2020 1-0 (41)}) (3. Be2 e5 4. d4 e4 5. c4 Nf6 6. Nc3 Bd6 7. Bd2 O-O 8. cxd5 cxd5 9. Qb3 Be7 10. h4 Nc6 11. Nh3 Na5 12. Qd1 Bxh3 13. Rxh3 Rc8 14. b3 Nc6 {Calpona,S (2229)-Roß,T ICCF 2012 0-1 (61)}) 3... e5 4. Nf3 Bg4 (4... e4 5. Ne5 Qg5 6. Qe2 Qxe5 7. f4 exd3 8. cxd3 Qf5 9. e4 Qxf4 10. Rf1 Qxh2 11. exd5+ Be7 12. d4 Qh4+ 13. Qf2 Qe4+ 14. Qe3 Bh4+ 15. Kd1 Bg4+ {0-1 (15) Kondov,K-Martinez Segado,J ICCF 2019}) 5. h3 e4 6. hxg4 exd3 7. cxd3 Bd6 8. Qe2 Nd7 9. Nc3 Qf6 10. Rf1 O-O-O 11. b3 Nc5 12. Rb1 Qg6 13. Nxd5 Nxd3+ {Orr,J-Honn,J (2087) ICCF 2007 0-1}) (2. Nc3 Nf6 3. d3 Be6 (3... e5 4. h3 Bb4 5. g4 d4 6. e4 dxc3 7. bxc3 Bxc3+ 8. Bd2 Bxa1 9. Qxa1 Nc6 10. g5 Nd7 11. Nf3 O-O 12. h4 f5 13. exf5 Nb6 14. f6 Qd5 15. Qd1 {Korchan, R-Nahálka,J ICCF 2009 0-1}) 4. e4 dxe4 5. Nxe4 Bd5 6. Nxf6+ exf6 7. Qe2+ Qe7 8. Qxe7+ Kxe7 9. Bf4 h6 10. Bxc7 Kd7 11. c4 Kxc7 12. cxd5 Kd6 13. g3 Kxd5 { Wright,N-Beckett,J ICCF 2006 1-0 (37)}) (2. g3 e5 (2... Qd7 3. Ke2 Nf6 4. Nf3 Nc6 5. Bg2 e5 6. d4 exd4 7. Re1 Be7 8. exd4 O-O 9. Kf1 h6 10. Nc3 Bb4 11. Kg1 Re8 12. Bd2 Rxe1+ 13. Qxe1 Qd8 14. Nd1 {Matyukhin,S (2493)-Trofimov,V (2419) ICCF 2019 1-0 (29)}) 3. Bg2 (3. Nc3 Nf6 4. f4 Nc6 5. Bb5 Bd7 6. a4 Bb4 7. fxe5 Nxe5 8. b3 Bxc3 {0-1 (8) Sherry,K-Hodgkins,N ICCF 2014}) 3... Bg4 (3... d4 4. Ke2 Nc6 (4... dxe3 5. dxe3 Qxd1+ 6. Kxd1 Bd6 7. b3 Ne7 8. Bb2 O-O 9. Ne2 Rd8 10. Nec3 c6 11. Kc1 Na6 12. Nd2 f6 13. Nce4 Bc7 14. Bf1 Nb4 15. a3 Nbd5 16. c4 {Matyukhin,S (2493)-Shevchenko,A (2189) ICCF 2019 1-0 (53)}) 5. d3 Bg4+ (5... Bd6 6. Nf3 Nge7 7. Re1 dxe3 8. Bxe3 O-O 9. Nc3 f5 10. Bg5 h6 11. Bxe7 Qxe7 12. Kf1 Be6 13. d4 Bc4+ 14. Kg1 e4 15. d5 Ne5 16. Nxe5 Qxe5 17. Bxe4 {Matyukhin,S (2505)-Poleshchuk,N (2482) ICCF 2018 1-0 (37)}) 6. f3 Be6 7. f4 Qd7 8. e4 Bg4+ 9. Bf3 O-O-O 10. Bxg4 Qxg4+ 11. Ke1 Qd7 12. fxe5 f5 13. exf6 Nxf6 14. Nf3 Ng4 15. Qe2 {Matyukhin,S (2505)-Nekhaev,A (2495) ICCF 2018 1-0 (40)}) 4. Ne2 Bxe2 5. Kxe2 Nc6 6. d4 exd4 7. Re1 Qd7 8. exd4 O-O-O 9. Kf1 Nf6 10. Bg5 Be7 11. Kg1 Qf5 12. Bxf6 Bxf6 13. c3 h5 {Matyukhin,S (2493)-Eliseev,N (2171) ICCF 2019 1/2 (41)}) (2. Qf3 Nf6 3. Nc3 (3. h3 e5 4. a3 c5 5. Qg3 Nc6 6. Bb5 Bd6 7. c4 O-O 8. Nc3 d4 9. Na2 e4 10. f4 exf3 11. Qxf3 Ne5 12. Qe2 Ne4 13. Qd1 Qh4+ 14. g3 Qxg3+ {Silec,Z-Vecek,M (2125) ICCF 2009 0-1}) 3... e5 (3... e6 4. Bb5+ c6 5. Bd3 Bd6 6. Nh3 e5 7. Bf5 e4 8. Qd1 Bxf5 9. Nf4 Nbd7 10. d4 Ng4 11. h3 Ngf6 12. g4 Be6 13. g5 Ng8 14. Qh5 Qe7 15. Bd2 {Sebestová,J-Uríková,M ICCF 2009 1-0 (43)}) 4. d4 (4. g3 e4 5. Qf4 Nh5 6. Qe5+ Be6 7. Qxh5 g6 8. Bb5+ c6 9. Qe5 Rg8 10. Nxe4 dxe4 11. Bc4 Nd7 12. Qxe4 Nc5 13. Qe5 Qd6 14. Qxd6 Bxd6 15. Bxe6 Nxe6 {Ziman, S-Wollner,J ICCF 2008 1-0 (55)}) 4... Nc6 5. Qd1 Bd6 6. Nf3 e4 7. Nd2 O-O 8. Be2 a6 9. O-O Ne7 10. f3 exf3 11. Bxf3 Nf5 12. e4 Ne3 13. Qe2 Nxf1 {Putra, M-Sungkar,H ICCF 2017 0-1}) (2. d3 c5 3. e4 Nc6 4. exd5 Qxd5 5. Nc3 Qd6 6. Be2 a6 7. Nf3 Nf6 8. Be3 b6 9. Ne4 Nxe4 10. dxe4 e6 11. c3 Bb7 12. Qa4 Be7 13. e5 Qc7 {Ipekyilmaz,E (1686)-Wilson,N (1544) ICCF 2018 1-0}) (2. c3 Nf6 3. Bb5+ c6 4. Bd3 e5 5. a3 Be7 6. c4 e4 7. Be2 O-O 8. d3 exd3 9. Bxd3 dxc4 10. Be2 Qxd1+ 11. Bxd1 Bf5 12. Nd2 Bd3 13. b3 cxb3 {Whittle,P (1311)-Morera Morera,J ICCF 2018 0-1}) (2. Qe2 e5 3. Kd1 Nf6 4. h3 (4. b3 Bd6 5. Bb2 Nc6 6. h3 O-O 7. g4 d4 8. Bg2 a5 9. a4 Nb4 10. d3 c6 11. Nd2 dxe3 12. fxe3 {Rumyantsev,V (2166)-Larin, I (2371) ICCF 2018}) 4... Bd6 5. g4 h6 (5... O-O 6. d3 e4 7. Nc3 exd3 8. cxd3 d4 9. exd4 Nc6 10. d5 Re8 11. Be3 Nd4 12. Qd2 c5 {1-0 (12) Rumyantsev,V (2166) -Manannikova,L (1704) ICCF 2018}) 6. d3 O-O 7. f4 exf4 8. exf4 Re8 9. Qf3 Qe7 10. Ne2 c6 11. Bd2 Nbd7 12. Kc1 b6 13. Nbc3 Bb7 {Rumyantsev,V (2166)-Chirkov,V (1910) ICCF 2018 1-0}) (2. Nf3 Nf6 3. b4 c6 4. Bb2 Bg4 5. Be2 Nbd7 6. a3 e6 7. O-O Bd6 8. d3 O-O 9. Nbd2 a5 10. c3 Qc7 11. h3 Bh5 12. Qb3 b5 13. Rfe1 c5 { Etmans,M (1921)-Frijling,J (2206) ICCF 2009 0-1 (43)}) 2... e5 (2... Nf6 3. Bf3 (3. Nf3 Qd6 4. d4 Nc6 5. c4 dxc4 6. Nbd2 b5 7. a4 Ba6 8. axb5 Bxb5 9. b3 c3 10. Nc4 Bxc4 11. bxc4 g6 12. c5 Qd5 13. Qa4 a6 14. Ne5 Bg7 {De Backer,Y-Pettigrew, S (1504) ICCF 2018 1-0 (38)}) 3... Nc6 4. c4 Bf5 5. cxd5 Nb4 6. Qa4+ Qd7 7. Qxb4 O-O-O 8. d6 c6 9. Qa5 a6 10. dxe7 Bxe7 11. d4 Rhe8 12. Be2 Bd6 {0-1 (12) Nossein,F (1607)-Azzoug,S (1606) ICCF 2011}) 3. Kf1 (3. d4 Nc6 4. dxe5 Nxe5 5. Nf3 Bd6 6. Qxd5 (6. Nxe5 Bxe5 7. f4 Bd6 8. O-O Nf6 9. c4 O-O 10. cxd5 Bc5 11. Bf3 Re8 12. Nc3 Bxe3+ 13. Bxe3 Ng4 14. Kh1 Nxe3 15. Qd4 Nxf1 16. Rxf1 Kh8 17. Qc4 Re7 {Szymanski,R (2360)-Kudryavtsev,Y (2067) ICCF 2020 0-1 (33)}) 6... Bb4+ 7. Qd2 Nxf3+ 8. Bxf3 Bxd2+ 9. Bxd2 Qf6 10. Nc3 Qg6 11. Nd5 Qxc2 12. Rc1 Qxb2 13. Nxc7+ Ke7 14. Nxa8 Bd7 {De Backer,Y-Moisan,M ICCF 2018 0-1 (56)}) (3. Nf3 e4 4. Nd4 (4. Ne5 f6 5. Bh5+ g6 6. Nxg6 hxg6 7. Bxg6+ Ke7 8. d4 Bg4 9. Qxg4 Qd7 {0-1 (9) Wedel,L (2285)-Kudryavtsev,Y (2067) ICCF 2020}) 4... c5 (4... a6 5. O-O Bd6 6. f4 exf3 7. Bxf3 Qh4 8. g3 Bxg3 9. hxg3 Qxg3+ 10. Bg2 Bh3 11. Qf3 Qxg2+ 12. Qxg2 Bxg2 13. Kxg2 Nf6 14. b3 O-O 15. Nf5 Nc6 16. Bb2 {De Backer, Y-Hardwick,M (1122) ICCF 2018 1-0}) 5. Nb3 Bd6 6. d4 c4 7. N3d2 Qg5 8. g3 h5 9. b3 cxb3 10. c4 h4 11. Rg1 hxg3 12. hxg3 bxa2 13. Rxa2 Rh2 14. cxd5 Qf5 { De Backer,Y-Cabrera Trujillo,C (1563) ICCF 2018 1-0 (43)}) (3. c3 Nf6 4. f3 h5 5. h4 Bd6 6. d3 c5 7. Bd2 Nc6 8. Na3 a6 9. Nh3 Bxh3 10. gxh3 e4 11. d4 Bg3+ 12. Kf1 exf3 13. Bxf3 c4 14. Rg1 Qd6 {Wójcik,L-Torre,F (1899) ICCF 2019 0-1}) (3. c4 dxc4 4. Kf1 Be6 5. Nf3 Nc6 6. Qa4 Qd7 7. Ng5 O-O-O 8. Nxe6 Qxe6 9. Qxc4 Qd7 10. a3 f5 11. Kg1 e4 12. b4 Ne5 13. Qb3 Nf6 14. Bb2 Qe8 {Trofimov,V (2422) -Poleshchuk,N (2482) ICCF 2018 0-1 (33)}) 3... Nf6 (3... Nc6 4. b3 (4. d4 Qd6 5. dxe5 Nxe5 6. Nc3 Be6 7. e4 O-O-O 8. exd5 Qc5 9. Be3 Qa5 10. a3 c5 11. Nf3 Ng4 12. Bf4 Bd6 13. Bxd6 Rxd6 14. Kg1 Qd8 15. Qc1 Bxd5 {Matyukhin,S (2504) -Trofimov,V (2415) ICCF 2017 1-0}) 4... a6 5. Bb2 Be6 6. f4 Qf6 7. Nf3 O-O-O 8. Nxe5 Nxe5 9. Bxe5 Qh6 10. Bg4 Kb8 11. Bxe6 Qxe6 12. Kf2 Nh6 13. h3 Rg8 14. g4 g5 15. Qf3 {Chernov,I (2140)-Kokarev,A (1997) ICCF 2018 0-1}) (3... Bd6 4. Nc3 (4. d4 Nf6 5. dxe5 Bxe5 6. c4 (6. Nf3 Bd6 7. Nc3 Be7 8. Nxd5 Nxd5 9. Qxd5 O-O 10. Qxd8 Rxd8 11. Bd3 Nd7 12. Ke2 Nc5 13. Bc4 Bf6 14. Rd1 Rxd1 15. Kxd1 Bd7 16. Rb1 Kf8 17. Nd4 Ne4 {Poleshchuk,N (2482)-Trofimov,V (2422) ICCF 2018 1/2 (45)}) 6... O-O 7. Nf3 Qe7 8. Nxe5 Qxe5 9. Bd2 Rd8 10. cxd5 Nxd5 11. Qc1 Nc6 12. Bc3 Qd6 13. Na3 Nxc3 14. Ke1 Nxe2 15. Kxe2 Qd3+ {Neborak,Y (2322)-Pirogov,A ICCF 2018 0-1}) 4... c6 5. Nf3 Nf6 6. d4 e4 7. Ne5 O-O 8. f4 exf3 9. Nxf3 Re8 10. Bd3 Nbd7 11. Qe2 b5 12. a3 Nb6 13. Kf2 Qc7 14. g3 Bg4 15. Kg2 {Kokarev,A (1997) -Larionov,S ICCF 2018 1-0}) (3... a6 4. d4 e4 5. c4 c6 6. h4 Nf6 7. g4 h6 8. Nc3 Be7 9. g5 O-O 10. gxf6 Bxf6 11. h5 Be6 12. Kg2 Bh4 13. Bg4 Bg5 14. cxd5 Bxd5 15. Nxd5 {Kozlov,A (2382)-Babarykin,V (1686) ICCF 2017 1-0 (40)}) 4. d4 ( 4. c4 d4 (4... dxc4 5. Bxc4 Bd6 6. Ne2 (6. d3 O-O 7. Nc3 a6 8. Nge2 b5 9. Bb3 Nbd7 10. Ng3 Nc5 11. Bc2 b4 12. Nce2 h5 13. Kg1 h4 14. Nf1 h3 15. Nfg3 g6 16. f3 Kg7 17. Kf2 Rh8 {Trofimov,V (2419)-Shevchenko,A (2189) ICCF 2019 0-1 (60)}) 6... O-O 7. Nbc3 e4 8. Ng3 Re8 9. Qc2 Nc6 10. a3 Bxg3 11. hxg3 Bf5 12. Kg1 Ne5 13. Bf1 Qd7 14. b4 Rad8 15. a4 c6 16. a5 {Trofimov,V (2418)-Kotyurgin,I (2226) ICCF 2018 0-1}) (4... Bd6 5. cxd5 Nxd5 6. Nc3 {1-0 (6) Kokarev,A (1997) -Baydashkin,A (2309) ICCF 2018}) (4... Be7 5. cxd5 Nxd5 6. g3 O-O 7. e4 Nb6 8. h4 Nc6 9. Nf3 Bg4 10. d3 f5 11. Kg2 Qd7 12. Be3 f4 13. gxf4 exf4 14. Bd2 Rad8 15. Bc3 Bxf3+ 16. Bxf3 {Matyukhin,S (2505)-Trofimov,V (2422) ICCF 2018 0-1 (52) }) 5. exd4 (5. d3 c5 (5... Be7 6. Nf3 Nc6 7. Na3 O-O 8. h3 Bxa3 9. bxa3 dxe3 10. Bxe3 Qe7 11. Kg1 Rd8 12. Qb3 b6 13. Kh2 Qd6 14. g3 Nd7 15. Qc3 Bb7 16. Rhd1 Kf8 17. Rac1 {Matyukhin,S (2505)-Kazantsev,R (2428) ICCF 2018 1-0 (42)}) 6. Bf3 (6. e4 Be7 7. Nf3 Nc6 8. Nxe5 Nxe5 9. Bf4 O-O 10. Bxe5 Nd7 11. Bg3 f5 12. exf5 Nf6 13. Kg1 Bxf5 14. Bf3 Qd7 15. Qc2 Rae8 16. Nd2 Kh8 17. h3 b6 {Matyukhin,S (2504)-Kozlov,A (2382) ICCF 2017 1/2}) 6... Be7 7. exd4 cxd4 8. g3 (8. Bg5 O-O 9. Nd2 Nfd7 10. Bxe7 Qxe7 11. Ne2 Nc5 12. Ne4 f5 13. Nxc5 e4 14. Nxe4 fxe4 15. Bxe4 Nc6 {0-1 (15) Trofimov,V (2419)-Matyukhin,S (2493) ICCF 2019}) 8... O-O 9. Kg2 Nfd7 10. h3 Nc6 11. Kh2 f5 12. Ne2 Nc5 13. Bd5+ Be6 14. Bxe6+ Nxe6 15. Nd2 a5 16. a3 Kh8 {Trofimov,V (2419)-Nekhaev,A (2470) ICCF 2019 0-1 (31)}) 5... exd4 6. d3 Be7 7. Nf3 (7. g3 O-O 8. Kg2 h6 9. Nd2 Re8 10. Ne4 (10. h3 Nc6 11. Kh2 Bf5 12. Ngf3 Bd6 13. a3 a5 14. Re1 g5 15. Bf1 Qd7 16. b3 Kh7 17. Bb2 g4 18. Rxe8 Rxe8 19. Nh4 gxh3 20. Qf3 Ng4+ 21. Kg1 h2+ {Trofimov,V (2422)-Nekhaev,A (2495) ICCF 2018 0-1 (51)}) 10... Nxe4 11. dxe4 Na6 12. Bd3 Nc5 13. f3 Nxd3 14. Qxd3 b5 15. Kf2 bxc4 16. Qxc4 Be6 17. Qd3 Kh8 18. Ne2 c5 {Trofimov,V (2422) -Kazantsev,R (2428) ICCF 2018 1-0 (68)}) 7... O-O 8. g3 Bh3+ 9. Kg1 h6 10. Bf1 Bf5 11. h3 c5 12. Kh2 Nc6 13. a3 Re8 14. Bg2 Bd6 15. Bd2 Bxd3 {Wedel,L (2285) -Zidu,J (2610) ICCF 2020 0-1}) (4. a3 Bd6 5. c4 d4 6. exd4 exd4 7. d3 O-O 8. g3 c5 9. Bg5 Nc6 10. Nd2 h6 11. Bxf6 Qxf6 12. Kg2 Qe7 13. Bf3 Qc7 14. Ne2 Bd7 15. Rf1 a5 {Trofimov,V (2422)-Matyukhin,S (2505) ICCF 2018 0-1 (42)}) 4... exd4 ( 4... Nc6 5. Nf3 (5. dxe5 Nxe5 6. Nc3 c6 7. f4 Ng6 8. f5 Ne7 9. Nxd5 Nexd5 10. Qxd5 Ke7 11. Qxd8+ Kxd8 12. Bd3 Bc5 13. Ke2 Re8 14. h3 Ne4 15. Bxe4 Rxe4 16. g4 g6 {Matyukhin,S (2505)-Neborak,Y (2322) ICCF 2018 1-0 (34)}) 5... exd4 (5... Bd6 6. dxe5 Nxe5 7. Nxe5 Bxe5 8. f4 Bd6 9. e4 O-O 10. e5 Bc5 11. exf6 Re8 12. g4 Rxe2 13. Qxe2 Bxg4 14. Qxg4 h5 {0-1 (14) Nekhaev,A (2470)-Eliseev,N (2171) ICCF 2019}) 6. exd4 Bd6 (6... Be7 7. h3 O-O 8. g3 h6 9. Bf4 Ne4 10. c3 Bd6 11. Bxd6 Qxd6 12. Kg2 Bf5 13. Bd3 Rae8 14. Qc2 g5 15. Nbd2 Qg6 16. Ne1 Kg7 17. g4 Be6 18. f3 {Nekhaev,A (2470)-Trofimov,V (2419) ICCF 2019 0-1 (43)}) 7. h3 O-O 8. Nc3 h6 9. g3 Bf5 10. Bd3 Ne4 11. Kg2 Re8 12. Nb5 Qf6 13. Nxd6 cxd6 14. c3 Re7 15. Rf1 Rae8 16. Nh4 {Konovalenko,A (2110)-Kudryavtsev,Y (2067) ICCF 2018 1-0 (41)}) (4... e4 5. Nc3 (5. h4 Bd6 6. Nh3 O-O 7. g3 c6 8. Kg2 a5 9. a4 Na6 10. b3 Bxh3+ 11. Kxh3 Qc8+ 12. Kg2 Qf5 13. Ba3 Rfd8 14. Qd2 Nb4 15. Rf1 b6 16. c3 Nd3 {Konovalenko,A (2110)-Kokarev,A (1997) ICCF 2018 1/2 (62)}) 5... Bd6 6. Nb5 Nc6 7. c4 Be6 8. c5 Be7 9. f4 Kd7 10. g4 a6 11. Nc3 g6 12. h4 Nxg4 13. Bxg4 Bxg4 14. Qxg4+ f5 15. Qg2 Bf6 {0-1 (15) Wedel,L (2285)-Major,B ICCF 2020}) 5. exd4 (5. Nf3 dxe3 6. Nc3 exf2 7. Bg5 Be7 8. Bxf6 Bxf6 9. Bb5+ Kf8 10. Qxd5 Qe7 11. Qd2 c6 12. Bd3 Nd7 13. Kxf2 Ne5 14. Rae1 Nxf3 15. gxf3 Bh4+ 16. Kg2 Bxe1 { Matyukhin,S (2505)-Shevchenko,A (2205) ICCF 2018 1-0}) 5... Bd6 (5... Be7 6. Nf3 (6. Be3 O-O 7. c3 h6 8. Nd2 Bd6 9. h3 b6 10. g3 c5 11. Kg2 Nc6 12. Ngf3 Ne7 13. Bd3 Nf5 14. Re1 Re8 15. Bxf5 Bxf5 16. g4 Bh7 17. dxc5 bxc5 {Matyukhin,S (2493)-Nekhaev,A (2470) ICCF 2019 1-0 (39)}) (6. g3 O-O 7. Kg2 c5 (7... h6 8. c3 Re8 9. Nf3 c5 10. Be3 Qb6 11. Qc2 Ng4 12. Bf4 g5 13. Bxb8 Bf5 14. Qd2 Qxb2 15. Kh3 Qxd2 16. Nbxd2 Raxb8 17. Kg2 Kg7 18. a4 Nf6 19. Rhe1 {Neborak,Y (2306) -Trofimov,V (2422) ICCF 2018 0-1 (34)}) 8. Nf3 h6 9. h3 Nc6 10. c3 Bd6 11. Kg1 Re8 12. Nbd2 cxd4 13. Nxd4 Nxd4 14. cxd4 Bd7 15. Bf3 Rc8 16. Nf1 Kh8 17. Ne3 Ne4 {Shevchenko,A (2189)-Nekhaev,A (2470) ICCF 2019 0-1}) 6... O-O 7. Nc3 Be6 ( 7... h6 8. h3 Re8 9. a3 Be6 10. Be3 Nbd7 11. g3 Nb6 12. Kg2 Nc4 13. Bf4 c6 14. b3 Nxa3 15. Qc1 Ne4 16. Nxe4 dxe4 17. Nd2 Nb5 18. Bxb5 cxb5 19. d5 {Poleshchuk, N (2482)-Kazantsev,R (2428) ICCF 2018 1-0 (37)}) 8. Be3 Re8 9. h3 Nbd7 10. g3 Bb4 11. Ng5 Bxc3 12. bxc3 Bf5 13. Kg2 h6 14. g4 Bg6 15. Nf3 Ne4 16. Bd3 Kh8 17. c4 {Poleshchuk,N (2482)-Matyukhin,S (2505) ICCF 2018 0-1 (33)}) (5... c5 6. Bf3 cxd4 7. Ne2 Bc5 8. b4 Be7 9. Nxd4 O-O 10. c3 Nc6 11. Bf4 {1-0 (11) Neborak,Y (2322)-Efimov,A (1899) ICCF 2018}) 6. Nf3 (6. Nc3 O-O (6... c6 7. g3 O-O 8. Kg2 Re8 9. Nf3 Na6 (9... Nbd7 10. Re1 Nf8 11. Kg1 h6 12. Qd3 Bc7 13. Bf1 Be6 14. Nd1 Ng6 15. Bg2 Qd7 16. Ne3 Kh8 17. b3 Ne4 18. Bb2 f5 19. Nf1 f4 20. c3 Bf5 21. Qd1 {Trofimov,V (2419)-Eliseev,N (2171) ICCF 2019 0-1}) 10. h3 h6 11. Kh2 Ne4 12. Kg2 Bf5 13. Nxe4 Bxe4 14. c3 Rf8 15. Re1 f5 16. Bd3 Kh7 17. Kh2 Nc7 18. Ne5 {Neborak,Y (2306)-Nekhaev,A (2495) ICCF 2018 0-1 (47)}) 7. Nb5 (7. g3 h6 8. Nb5 Bb4 9. c3 Ba5 10. Na3 c6 11. Kg2 Bc7 12. Bd3 Re8 13. Nc2 b6 14. Ne2 Qd7 15. h3 c5 16. Nf4 Kh8 17. Nh5 Ne4 18. Bf4 Bxf4 {Eliseev,N (2171)-Shevchenko,A (2189) ICCF 2019 1/2 (26)}) 7... Be7 8. g3 c5 9. dxc5 Bxc5 10. c3 Nc6 11. Kg2 Bf5 12. Bg5 h6 13. Bc1 Qb6 14. Bf4 Rac8 15. a4 g5 16. a5 Qd8 17. Bc1 Ne4 {Neborak,Y (2306)-Kazantsev,R (2428) ICCF 2018 0-1}) (6. g3 O-O 7. Be3 (7. Kg2 Bf5 (7... c5 8. Nf3 Nc6 9. Nc3 cxd4 10. Nxd4 Re8 11. Be3 Bb4 12. Kg1 Bh3 13. Bf1 Bg4 14. Qc1 Bh5 15. h3 Rc8 16. Rh2 Kh8 17. Ncb5 a6 18. Nxc6 bxc6 19. Nd4 {Kokarev,A (1997)-Konovalenko,A (2110) ICCF 2018 0-1 (42)}) (7... Nc6 8. Nf3 Ne4 9. Re1 h6 10. Nbd2 Re8 11. c3 Nf6 12. Kg1 Bf5 13. Nf1 Qd7 14. Ne3 Be4 15. Nh4 Bh7 16. Bf3 Be7 17. Nxd5 Nxd5 18. Bxd5 Kf8 19. Be4 {Kokarev,A (1997)-Kruk,S (1695) ICCF 2018 0-1 (42)}) (7... Re8 8. Nf3 Ne4 9. Re1 Qf6 10. Nbd2 Bg4 11. Kg1 Nd7 12. Nxe4 Rxe4 13. Be3 Rae8 14. Nd2 Bxe2 15. Nxe4 dxe4 16. Rxe2 Qg6 17. c4 c6 18. Qb3 b6 19. c5 {Kokarev,A (1997)-Chernov,I (2140) ICCF 2018 1-0}) 8. Bd3 Qd7 9. Bxf5 Qxf5 10. Qd3 Qh5 11. Qf3 Qg6 12. Kh3 Re8 13. Kg2 Nc6 14. Qd1 Nb4 15. Na3 a6 16. Nf3 Kh8 17. Rf1 c5 18. c3 Nd3 {Kokarev,A (1997)-Kudryavtsev,Y (2067) ICCF 2018 0-1 (47)}) 7... Bf5 (7... Re8 8. Nc3 c6 9. a3 Nbd7 10. Nf3 Ne4 11. Kg2 h6 12. Nxe4 dxe4 13. Nd2 Qe7 14. Nc4 Bc7 15. Qd2 Nf6 16. Bf4 Kh7 17. Bxc7 Qxc7 18. Ne3 Be6 19. Rhd1 {Szymanski,R (2360)-Shishkov,P (2387) ICCF 2020 0-1 (33)}) 8. Bd3 Qd7 9. h3 Nc6 10. Nc3 Nb4 11. Kg2 Nxd3 12. cxd3 h6 13. Nf3 Rfe8 14. Qd2 c6 15. Rae1 Bh7 16. Ne5 Qc7 17. Ng4 Nd7 {Nekhaev,A (2470)-Shevchenko,A (2189) ICCF 2019 1-0}) 6... O-O 7. Nc3 (7. g3 Bh3+ 8. Kg1 h6 9. Bf1 Be6 10. Nc3 Nbd7 11. h3 Ne4 12. Bg2 Re8 13. Be3 Nxc3 14. bxc3 Bxg3 15. Kf1 Bd6 16. Qd3 Kh8 17. Rb1 Qf6 18. Rxb7 Bf5 {Wedel,L (2285)-Shishkov,P (2387) ICCF 2020 0-1}) 7... c6 (7... Re8 8. Nb5 Bb4 9. Bg5 Ba5 10. c3 h6 11. Bxf6 Qxf6 12. Ke1 Bb6 13. b4 a5 14. a4 axb4 15. cxb4 Qe7 16. Rb1 Rxa4 17. Nc3 Rxb4 18. Nxd5 Qxe2+ 19. Qxe2 { Poleshchuk,N (2482)-Nekhaev,A (2495) ICCF 2018 1-0 (51)}) 8. g3 (8. Bg5 Kh8 9. Qd2 Be6 10. h4 Nbd7 11. Bd3 c5 12. Kg1 c4 13. Bf1 Qb6 14. Rb1 Bb4 15. Qc1 Rfe8 16. Nd1 Kg8 17. b3 c3 18. a3 Bd6 19. Nxc3 Rac8 {Trofimov,V (2418)-Makina,E ICCF 2018 0-1}) 8... Bh3+ 9. Kg1 Re8 10. Bf1 Qd7 11. Bxh3 Qxh3 12. Ng5 Re1+ 13. Qxe1 Ng4 14. Nxh3 Ne3 {0-1 (14) Nekhaev,A (2470)-Matyukhin,S (2493) ICCF 2019 Irregular Openings}) 1... e5 (1... c6 2. c4 (2. Bb2 Qb6 (2... a5 3. a3 (3. b5 cxb5 (3... d5 4. e3 (4. bxc6 Nxc6 5. d4 Qb6 6. Nf3 Qxb2 7. Nbd2 Nb4 8. e3 Nxc2+ 9. Ke2 Nxa1 10. a4 Nf6 11. Ke1 Nc2+ 12. Ke2 Ne4 13. Nxe4 dxe4 14. Nd2 Qc3 15. Nxe4 Bg4+ {Ylönen,O-Belter,E ICCF 2009 0-1}) 4... Qd6 5. Nf3 Nd7 6. c4 Ngf6 7. bxc6 bxc6 8. cxd5 Nxd5 9. Nc3 Rb8 10. Rb1 e5 11. Ba1 Rxb1 12. Qxb1 Be7 13. Be2 O-O 14. O-O N5f6 15. Ne4 {Degterev,P (2346)-Wernikiewicz,Z (2368) ICCF 2006 1-0 (61)}) (3... c5 4. a4 d5 5. e3 b6 6. Nf3 Bb7 7. c4 Nf6 8. cxd5 Nxd5 9. Be2 Nd7 10. O-O N7f6 11. Na3 e6 12. Nc4 Be7 13. Nfe5 Nd7 14. Nxd7 Qxd7 15. e4 { Cottarelli,F (1897)-Lindgaard,T ICCF 2012 1-0}) 4. e4 (4. e3 b4 5. a3 Nc6 6. Nf3 Nf6 7. axb4 (7. Bb5 g6 8. axb4 Nxb4 9. Bxf6 exf6 10. c3 Nc6 11. O-O Bg7 12. c4 O-O 13. Nc3 b6 14. d4 Nb4 15. Qa4 f5 16. Rfb1 Bb7 17. Bxd7 Bxf3 18. gxf3 f4 {Bäckström,M (2228)-Luzuriaga,N (2336) ICCF 2009 0-1 (64)}) 7... Nxb4 8. Na3 e6 (8... g6 9. Nc4 Nc6 10. Qb1 Bg7 11. Bc3 O-O 12. Nb6 Ra7 13. Be2 d6 14. O-O Bf5 15. Rc1 Nd7 16. Bxg7 Kxg7 17. Nc4 Nf6 18. Qb3 Qc7 19. h3 Be4 20. d4 {Zylla,J (2129)-Luzuriaga,N (2336) ICCF 2009 0-1 (29)}) 9. Be2 Be7 10. O-O O-O 11. Nb5 d5 12. Be5 Bd7 13. c3 Nc6 14. Bc7 Qc8 15. Qb1 Ne4 {Zylla,J (2129)-Bäckström,M (2228) ICCF 2009 1-0 (70)}) (4. a3 Na6 5. e3 b4 6. c3 bxa3 7. Nxa3 Nf6 8. Nc4 b6 9. Nf3 e6 10. Qb1 Rb8 11. d4 Bb7 12. Bd3 Nc7 13. Ncd2 Be7 14. O-O Ncd5 15. g3 Nc7 {Degterev,P (2545)-Shulga,Y (2398) ICCF 2008 1/2 (44)}) (4. Na3 b4 5. Nb5 Nf6 6. Nf3 Nc6 7. e3 g6 8. a3 Bg7 9. axb4 Nxb4 10. c3 Na6 11. Be2 O-O 12. O-O d6 13. d4 Nc7 14. Nxc7 Qxc7 15. c4 Bd7 {Gavrijski,D (2173)-Luzuriaga,N (2354) ICCF 2008 0-1 (47)}) 4... b4 5. a3 Nf6 (5... Nc6 6. axb4 Nxb4 7. Nf3 e6 (7... Nf6 8. Nc3 Qc7 (8... d6 9. e5 Nfd5 10. Bb5+ Bd7 11. O-O Nxc3 12. Bxd7+ Qxd7 13. Bxc3 Nc6 14. exd6 e6 15. Re1 Qxd6 16. Qb1 Be7 17. Bxg7 Rg8 18. Be5 Qb4 19. Qd1 b5 20. g3 {Degterev,P (2460)-Laursen,B (2231) ICCF 2006 1-0 (64)}) 9. Be2 Nxe4 10. Nxe4 Nxc2+ 11. Kf1 Nxa1 12. Qxa1 f6 13. Nc3 e6 14. h4 d5 15. h5 Be7 16. Nb5 Qd8 17. h6 g6 18. Nh4 a4 19. Bd3 {Luzuriaga,N (2336)-Bäckström,M (2228) ICCF 2009 1/2 (76)}) 8. Be2 (8. Bb5 Nf6 9. Nc3 Be7 10. O-O O-O 11. e5 Ne8 12. Na4 d6 13. c3 Nd5 14. c4 Nb4 15. d4 b6 16. Qe2 Bb7 17. Rac1 Rb8 18. Rfd1 Nc7 19. exd6 Bxd6 {Recasens Sánchez,J (2124)-Guevara i Pijoan,J (2020) ICCF 2008 1/2}) 8... Nf6 9. e5 Nfd5 10. O-O Be7 11. g3 O-O 12. d4 d6 13. exd6 Qxd6 14. Na3 b6 15. Nb5 Qd8 16. c3 Nc6 17. Re1 {Rocco Ruiz,J (2200) -Baumgartner,U (2210) ICCF 2008 0-1 (88)}) (5... bxa3 6. Nxa3 Nc6 7. Nf3 d6 8. d4 Nf6 9. Bb5 Bd7 10. d5 Nb4 11. Qe2 Bxb5 12. Nxb5 Rc8 13. c4 b6 14. Bc3 Na6 15. e5 dxe5 16. Nxe5 e6 17. O-O {Cooper,R (2038)-Cole,S (1863) ICCF 2013 1-0}) (5... d5 6. e5 e6 7. Nf3 Nc6 8. axb4 Nxb4 9. Ba3 Be7 10. c3 Nc6 11. d4 Bd7 12. Bd3 Nh6 13. Bxe7 Nxe7 14. Qb3 a4 15. Qxb7 O-O 16. Qb2 Ng6 17. Qd2 {Kirk,T (1573)-Schober,A ICCF 2019 0-1 (27)}) (5... Qb6 6. Nf3 e6 7. Bd4 Qd8 8. axb4 Nc6 9. bxa5 Nxd4 10. Nxd4 Rxa5 11. Nc3 Ne7 12. Rxa5 Qxa5 13. Nb3 Qg5 14. h4 Qf6 15. d4 Nc6 16. Nb5 Be7 17. e5 {Buczinski,H (2200)-Mouron,D (2200) ICCF 2011 1/ 2 (65)}) 6. e5 Nd5 7. Nf3 (7. axb4 Nxb4 8. Bb5 g6 9. e6 f6 10. d4 Bh6 11. Ba3 Qb6 12. exd7+ Bxd7 13. Bxd7+ Nxd7 14. Ne2 O-O 15. c3 Nd5 16. c4 Nb4 17. O-O Qe6 18. Nd2 Nb6 {Bruseghini,F (1623)-Fessler,S (2331) ICCF 2009 0-1 (57)} 19. c5 N6d5 20. Nc4 Rfd8 21. Re1 Nc3 22. Nxc3 Qxc4 23. Bb2 Rxd4 24. Qf3 Nc6 25. Na4 Rd3 26. Qe2 Rad8 27. Bxf6 exf6 28. Nb2 Qd5 29. Nxd3 Qxd3 30. Qa2+ Kg7 {Baumann, W (1989)-Bruseghini,F (1623) ICCF 2009 0-1 (47)}) (7. c4 bxc3 8. Nxc3 Nxc3 9. Bxc3 e6 10. Nf3 Be7 11. Bd3 b6 12. O-O Ba6 13. Qe2 Bxd3 14. Qxd3 O-O 15. Rfb1 Nc6 16. Rb5 Qc7 17. h3 h6 18. Bb2 Na7 {Murlasits,M (2200)-Bester,B (2426) ICCF 2009 0-1 (46)}) 7... Nc6 8. axb4 (8. d4 e6 9. c4 bxc3 10. Nxc3 Nxc3 11. Bxc3 Ne7 12. Bd3 Nd5 13. Bd2 Be7 14. O-O b6 15. Qe2 Bb7 16. Qe4 Rc8 17. Qg4 g6 18. Ng5 d6 19. Qg3 dxe5 {Gröbner,K (2234)-Baldassare,S (2426) ICCF 2016 1/2 (57)}) 8... Ndxb4 9. c3 (9. Bb5 g6 10. O-O Bg7 11. d4 d5 12. exd6 Qxd6 13. c3 Nd5 14. Ba3 Qd7 15. Re1 O-O 16. Ne5 Qc7 17. Bxc6 bxc6 18. c4 Nf4 19. Nc3 Ne6 20. Rc1 a4 {Stapinski,R (1852)-Deforel,J (2059) ICCF 2017 0-1 (34)}) (9. d4 d5 10. c3 Na6 11. Bd3 g6 12. O-O Nc7 13. Na3 Bg7 14. Ng5 O-O 15. Nc2 b5 16. f4 Rb8 17. h4 Bf5 18. Bxf5 gxf5 19. Qh5 h6 20. Nf3 e6 {Fagerbekk,E (2189)-Hechl,G (2156) ICCF 2013 1/2 (45)}) 9... Nd5 10. Na3 g6 11. Qb3 Nb6 12. Ng5 a4 13. Qxf7# {1-0 (13) Bristol,M (2138)-Giroux,M (2036) ICCF 2012}) (3. bxa5 Rxa5 (3... d5 4. e3 Nf6 5. c4 e6 6. Nf3 Bd6 7. Be2 dxc4 8. Ne5 Bxe5 9. Bxe5 Qd5 10. Bxf6 gxf6 11. O-O Rg8 12. g3 e5 13. Nc3 Qxa5 14. Bxc4 b5 15. Bb3 {Brisson,P (2058)-Sadler,K (1810) ICCF 2016 1-0}) (3... Nf6 4. Nf3 Qxa5 5. c4 d6 6. Bc3 Qa4 7. Qxa4 Rxa4 8. e3 e5 9. d3 Be7 10. Be2 e4 11. dxe4 Nxe4 12. Bxg7 Rg8 13. Nc3 Nxc3 14. Bxc3 Rxg2 15. Bf1 {Daatselaar,J (2200)-Dam,J (2118) ICCF 2020 1-0 (40)}) 4. c4 Nf6 5. Nf3 d5 6. Bc3 Ra8 7. cxd5 cxd5 8. e3 Ne4 9. Ne5 Nxc3 10. Nxc3 g6 11. Qf3 Be6 12. Bb5+ {1-0 (12) Hamer,J (1916)-Ward,B (1668) ICCF 2014}) (3. c3 e6 4. Qc2 axb4 5. cxb4 Bxb4 6. Bxg7 {1-0 (6) Waud,D (1934)-Ward,B (1599) ICCF 2020}) 3... axb4 4. axb4 Rxa1 5. Bxa1 Qb6 (5... Na6 6. b5 (6. c3 e5 (6... Nf6 7. Nf3 g6 8. e3 Bg7 9. Bxa6 bxa6 10. Qa4 Qb6 11. O-O Qb5 12. Qc2 O-O 13. d3 d6 14. Nbd2 c5 15. bxc5 Qxc5 16. c4 Qc7 17. Rb1 Bb7 18. e4 {Morley,P (2270)-Tritt,M (1896) ICCF 2008 1/2 (43)}) 7. e3 Nc7 8. c4 f6 9. b5 cxb5 10. cxb5 d5 11. Nc3 b6 12. Qb3 Be6 13. Na4 Bd6 14. Nxb6 Ne7 15. Nf3 Qb8 16. Na4 d4 17. Qb1 Qa7 {Groot,P (2290)-Barendswaard,W (2111) ICCF 2020 1/2 (36)}) 6... cxb5 7. Nc3 (7. e4 Qa5 8. Nc3 b4 9. Nd5 Nf6 10. Nxf6+ gxf6 11. Ne2 Nc5 12. Ng3 h5 13. h4 Rg8 14. Be2 Rxg3 15. fxg3 Nxe4 16. Bd3 d5 17. O-O Nxg3 18. Rf2 Qa7 {Daatselaar,J (2233) -Luzuriaga,N (2378) ICCF 2006 0-1 (47)}) 7... b4 8. Nb5 d6 9. e3 Bd7 10. f4 Qb6 11. Nd4 Nf6 12. Nb3 e6 13. Nf3 Be7 14. Bd3 Nc5 15. Nxc5 dxc5 16. g4 O-O 17. g5 {Hoch,H (2106)-Tritt,M (1905) ICCF 2008 1/2 (28)}) (5... Nf6 6. e3 Qb6 7. c3 d6 8. Na3 e5 9. Nf3 Be7 10. Nc4 Qc7 11. h3 e4 12. Nd4 d5 13. Nb2 O-O 14. Be2 Bd6 15. Qc2 b5 16. Nd1 Re8 17. Bb2 {Diener,R (1946)-Baldassare,S (2428) ICCF 2017 0-1 (25)}) 6. c3 (6. Bc3 Na6 7. Nf3 Nxb4 8. e3 Nf6 9. Na3 Nbd5 10. Nc4 Qc7 11. Bb2 b5 12. Nce5 d6 13. Nd3 e5 14. Qa1 e4 15. Nf4 Nxf4 16. Ng5 N4d5 17. c4 bxc4 {Thomsen,J-Daamen,F ICCF 2011 0-1 (25)}) 6... d5 (6... e5 7. e3 d5 8. c4 Nd7 9. Nf3 e4 10. Ne5 dxc4 11. Bxc4 Nxe5 12. Bxe5 Qxb4 13. Qc2 Nf6 14. Bxf6 gxf6 15. Qxe4+ Be6 16. Bd3 Qxe4 17. Bxe4 f5 18. Bf3 {Böhnke,H (2137)-Kries,Y ICCF 2006 1/2 (60)}) 7. e3 (7. Nf3 Nf6 8. e3 (8. d4 Bf5 9. Nbd2 g6 10. e3 Bg7 11. h3 Nbd7 12. Be2 Qc7 13. O-O Nb6 14. b5 O-O 15. bxc6 bxc6 16. c4 Ra8 17. c5 Na4 18. Ne5 Nd7 19. Nxd7 Bxd7 {Enachi,M (2034)-Budin,F (2025) ICCF 2018 0-1 (26)}) 8... Bf5 9. d3 (9. Bb2 g6 10. d4 Bh6 11. Nbd2 O-O 12. Be2 Nbd7 13. Qb3 Be6 14. h3 Ra8 15. Bd3 Ne4 16. O-O Nd6 17. Re1 Qd8 18. Ra1 Rxa1+ 19. Bxa1 Qa8 20. Bb2 Qa7 { Daatselaar,J (2177)-Luzuriaga,N (2336) ICCF 2009 1/2 (55)}) 9... e6 (9... h6 10. Be2 e6 11. O-O Bd6 12. Nbd2 Nbd7 13. Bb2 O-O 14. Qa4 Ng4 15. d4 Qc7 16. h3 Nh2 17. Ra1 Nxf3+ 18. Nxf3 Rb8 19. Qd1 b5 20. Bd3 Qb7 21. Bxf5 {Gavrijski,D (2143)-Luzuriaga,N (2336) ICCF 2009 0-1 (78)}) 10. Nbd2 Bd6 11. Be2 Nbd7 12. O-O Qc7 13. Qb3 O-O 14. c4 b6 15. Bb2 c5 16. b5 Rd8 17. h3 Ne5 18. Qc3 d4 { Etmans,M (2013)-Pommerel Brouwer,W (2319) ICCF 2006 0-1 (51)}) (7. Na3 e5 8. Nc2 Bd6 9. Nf3 f6 10. e3 Ne7 11. Be2 O-O {0-1 (11) Essen,W (1932)-Niewold,J (1792) ICCF 2009}) 7... Bf5 (7... Nf6 8. Be2 Bf5 9. Nf3 Qa7 10. Bb2 Qa2 11. Qc1 Qxb1 12. Qxb1 Bxb1 13. O-O Bg6 14. Ne5 Nbd7 15. Nxd7 Kxd7 16. c4 dxc4 17. Bxc4 b5 18. Be2 e6 19. Bc3 {Meara,P (1708)-Davey,A ICCF 2015 0-1 (30)}) 8. Na3 (8. d4 Nf6 9. Bd3 (9. Nf3 e6 10. Nh4 Bd6 11. Nxf5 exf5 12. Bd3 g6 13. Nd2 Nbd7 14. g3 h5 15. Nf3 Ne4 16. O-O O-O 17. Bb2 Qc7 18. c4 dxc4 19. Bxc4 Bxb4 20. Qb3 Be7 {Wantoch-Rekowski,J (2322)-Bauer,W (2512) ICCF 2007 0-1 (80)}) 9... Bxd3 10. Qxd3 e6 11. Nd2 Bd6 12. Ngf3 O-O 13. O-O Nbd7 14. Rb1 Qb5 15. c4 dxc4 16. Qxc4 Qf5 17. b5 Rc8 18. bxc6 Rxc6 19. Qe2 Qh5 {Wantoch-Rekowski,J (2246)-McDonald,G (1949) ICCF 2008 1-0 (33)}) (8. Nf3 Qa7 9. Nd4 Bg6 10. Nb3 Qa2 11. d3 e6 12. Be2 Nf6 13. O-O Bd6 14. N1d2 O-O 15. Qb1 Qa7 16. Qc2 h6 17. Bb2 Nbd7 18. Ra1 Qb6 19. h3 Qc7 {Hospers,B (1993)-Dam,J (2118) ICCF 2020 (38)}) 8... e5 (8... h6 9. f4 Nf6 10. Nf3 e6 11. Nc2 Bd6 12. Nfd4 Bg6 13. Be2 Nbd7 14. O-O O-O 15. d3 Bh7 16. Qd2 Ra8 17. c4 dxc4 18. dxc4 Ne4 19. Qe1 c5 20. Nb5 {Wantoch-Rekowski, J (2224)-Nicklich,W (2330) ICCF 2009 0-1 (78)}) 9. Nf3 Bd6 10. Nc2 (10. Be2 Nd7 11. d3 Bxb4 12. cxb4 Qxb4+ 13. Qd2 Qxa3 14. O-O f6 15. Bb2 Qd6 16. Ra1 Qb8 17. e4 Be6 18. exd5 cxd5 19. Ba3 Ne7 20. d4 e4 21. Nh4 Nc6 {Wantoch-Rekowski,J (2224)-Sekretaryov,R (2347) ICCF 2009 0-1 (45)}) 10... Na6 11. Be2 Nf6 12. c4 Bxc2 13. Qxc2 Nxb4 14. Qb1 {Wantoch-Rekowski,J (2224)-Shipman,J (2244) ICCF 2009 0-1 (77)}) (2... Nf6 3. a3 (3. c4 e6 4. a3 (4. c5 a5 5. a3 axb4 6. axb4 Rxa1 7. Bxa1 Na6 8. Qb3 Nd5 9. Bc3 Nxc3 10. dxc3 b6 11. cxb6 Qxb6 12. e3 Be7 13. Nd2 O-O 14. Ngf3 d5 15. Be2 Nc7 {Williams,B-Norlander,S ICCF 2004 1/2 (72)} ) 4... d5 5. e3 dxc4 6. Bxc4 b5 7. Be2 (7. Bb3 a5 8. bxa5 Nbd7 9. Nf3 Qxa5 10. O-O Bb7 11. a4 b4 12. d3 Nc5 13. Bc4 Be7 14. Nbd2 O-O 15. Qc2 Rfc8 16. Rfb1 h6 17. e4 Ncd7 18. Nb3 Qc7 {Cottarelli,F (2106)-Luzuriaga,N (2354) ICCF 2008 0-1 (36)}) 7... a5 8. bxa5 Qxa5 9. Nf3 Bd6 10. O-O O-O 11. d4 Ba6 12. Nc3 Nbd7 13. e4 Nh5 14. e5 Be7 {Zylla,J (2267)-Walker,J (1943) ICCF 2008 1-0}) 3... d6 4. d4 (4. Nf3 e5 5. e3 Be7 6. Be2 a5 7. O-O {1-0 (7) Haznedaroglu,K (2293)-Walker,J (1943) ICCF 2008}) 4... Bf5 5. e3 e6 6. c4 d5 7. Nf3 Bd6 8. Nbd2 {1-0 (8) Bjazevic,P (2245)-Walker,J (1943) ICCF 2008}) (2... d6 3. e4 Qb6 4. a3 Nf6 5. Nc3 e5 6. Be2 Be7 7. Nf3 Bg4 8. O-O O-O 9. Ng5 Bxe2 10. Qxe2 h6 11. Nf3 Nbd7 12. Nh4 g6 13. Qc4 Kg7 14. Nf3 {Nicotera,A-Gionfriddo,M (1858) ICCF 2011 1-0 (53)}) 3. a3 (3. Bc3 Nf6 4. e3 d6 5. Nf3 e5 6. Be2 Be7 7. O-O Nbd7 8. a3 Qc7 9. d4 e4 10. Nfd2 d5 11. f3 O-O 12. fxe4 dxe4 13. Nb3 Bd6 14. N1d2 Bxh2+ {Neumann, F (1584)-Thörnqvist,C ICCF 2008 0-1}) (3. c3 e5 4. e4 Nf6 5. Nf3 Nxe4 6. Qe2 d5 7. d3 Nf6 8. Qxe5+ Be7 9. Be2 c5 10. a3 Nc6 11. Qf4 O-O 12. O-O Re8 13. Qd2 Bf5 14. d4 Ne4 {Balañá Romero,R (1775)-Beltrán Seguer,J (2040) ICCF 2020 0-1 (26)}) 3... a5 (3... c5 4. bxc5 Qxc5 5. Nc3 (5. e3 e5 6. Nf3 Nc6 7. Nc3 Qa5 8. Bb5 Nge7 9. O-O f5 10. e4 a6 11. Bc4 fxe4 12. Nxe4 d5 13. Nd6+ Kd7 14. Nf7 dxc4 15. Nxh8 Qd5 16. d3 Ke8 {Haznedaroglu,K (1990)-Kubácek,J ICCF 2006 1-0 (29)}) 5... Nc6 6. e3 e5 7. Na4 Qe7 8. c4 d6 9. Nf3 Bg4 10. Be2 Nf6 11. O-O g6 12. Nc3 Bg7 13. Nd5 Nxd5 14. cxd5 Nb8 15. Qa4+ {Krüger,J-Kubácek,J ICCF 2006 1-0}) (3... d5 4. c4 (4. Nf3 Bf5 5. d3 Nd7 6. Nbd2 {Millstone,M (2489)-Ozturk,F ICCF 2010}) 4... dxc4 5. e3 Qa6 6. Nf3 Nf6 7. a4 e6 8. Na3 Bxb4 9. Nxc4 c5 10. Ng5 O-O 11. Bxf6 gxf6 12. Nxh7 Kxh7 13. Bd3+ f5 14. Qh5+ Kg7 15. Qg5+ {Zylla,J (2226) -Kubácek,J ICCF 2006 1-0}) 4. Nc3 (4. c4 axb4 (4... d6 5. Nc3 (5. d4 axb4 6. c5 Qc7 7. axb4 Rxa1 8. Bxa1 e5 9. e3 exd4 10. exd4 Nf6 11. Nf3 Bg4 12. Be2 Be7 13. Nbd2 O-O 14. O-O Nd5 15. Qb3 Nd7 16. Re1 Bf6 {Schulz,B (1920)-Masset,J (1868) ICCF 2013 0-1 (50)}) 5... Nf6 6. b5 g6 7. Nf3 Bg7 8. e3 O-O 9. d4 Nbd7 10. Bd3 e5 11. O-O Re8 12. Qc2 Qd8 13. Rfd1 Qe7 14. Bf1 e4 15. Nd2 Nb6 16. bxc6 { Uecker,D (2392)-Poulheim,K (2330) ICCF 2011 1-0 (43)}) 5. c5 Qc7 (5... Qd8 6. axb4 Rxa1 7. Bxa1 d5 8. Nf3 Nd7 9. e3 Ngf6 10. d4 g6 11. b5 Qc7 {0-1 (11) Grosse,M (1687)-Carter,M (1594) ICCF 2006}) 6. axb4 (6. Nf3 b6 7. axb4 Rxa1 8. Bxa1 Na6 9. b5 cxb5 10. Nc3 bxc5 11. Nxb5 Qb7 12. e3 Nf6 13. Bc4 Nc7 14. Nxc7+ Qxc7 15. Be5 d6 16. Bxf6 gxf6 17. Qa4+ Bd7 {Ilzig,G (2264)-Sisák,R (2138) ICCF 2017 1/2 (26)}) 6... Rxa1 7. Bxa1 Na6 (7... Nf6 8. e3 (8. Nf3 e6 9. Bxf6 gxf6 10. e3 b6 11. d4 d6 12. cxd6 Bxd6 13. b5 Bb7 14. Nbd2 c5 15. dxc5 Qxc5 16. Be2 Nd7 17. O-O O-O 18. Nd4 Ne5 19. f4 Ng6 {Cooper,R (2036)-Wilson,M (1972) ICCF 2013 0-1 (51)}) 8... e5 9. d4 exd4 10. exd4 Be7 11. Nf3 d6 12. Bc4 b5 13. Bb3 Na6 14. Bc3 Ne4 15. Qc1 O-O 16. Nbd2 Nxc3 17. Qxc3 Bf6 18. O-O Re8 19. Bc2 { Baumann,W (2089)-Wettering,G (1847) ICCF 2009 0-1 (47)}) (7... b5 8. e3 d6 9. d4 Nf6 10. Nc3 dxc5 11. dxc5 Na6 12. Qb1 Bg4 13. g3 Bd7 14. Bg2 g6 15. Ne4 Bg7 16. Nxf6+ Bxf6 17. Bxf6 exf6 18. Qe4+ Qe5 19. Qxe5+ {Smith,A (1669)-Clayton,I (1765) ICCF 2015 0-1 (28)}) (7... b6 8. e3 e6 9. Nf3 f6 10. d4 d5 11. Nc3 bxc5 12. bxc5 Nh6 13. Bd3 Be7 14. Qc2 f5 15. O-O O-O 16. Nd2 Ba6 17. Ne2 Bxd3 18. Qxd3 g5 19. Rb1 {Zylla,J (2267)-Haznedaroglu,K (2293) ICCF 2008 1/2 (31)}) 8. Qb3 (8. Bc3 d6 9. d4 Nf6 10. Nf3 b6 11. cxd6 exd6 12. b5 cxb5 13. e3 b4 14. Bb2 Qd7 15. Bd3 Be7 16. e4 O-O 17. O-O Nc7 18. d5 Na6 19. Nd4 Nc5 {Schmidt,K (2125) -Preuße,G (2239) ICCF 2010 1/2 (37)}) 8... Nf6 (8... b5 9. e3 d6 10. d4 e5 11. Nc3 exd4 12. Nxb5 cxb5 13. Bxb5+ Kd8 14. Qa4 Nxb4 15. Qxb4 Qa7 16. Qb2 Qa5+ 17. Kf1 Ba6 18. Bxa6 Qxa6+ 19. Ne2 d3 20. Nc3 {Wantoch-Rekowski,J (2173)-Trofimov, V (2376) ICCF 2010 0-1 (56)}) (8... b6 9. d4 e5 10. e3 exd4 11. exd4 Nf6 12. Bc4 d5 13. Be2 Be7 14. Nf3 O-O 15. O-O Nb8 16. Nbd2 Bf5 17. Nh4 Be6 18. Qc2 g6 19. Re1 Nh5 20. Nhf3 {Akrill,R (2064)-Bishop,W ICCF 2019 1/2 (33)}) 9. e3 (9. Nf3 Nd5 10. Bc3 d6 11. e4 Nxc3 12. Nxc3 dxc5 13. Bxa6 bxa6 14. bxc5 e5 15. Qb6 Qxb6 16. cxb6 f6 17. Na4 a5 18. O-O Ba6 19. Ra1 Bb4 20. d4 Kf7 {Gavrijski,D (2173)-Bäckström,M (2258) ICCF 2008 0-1 (89)}) 9... d6 10. Bxa6 (10. Nf3 Be6 11. Qa4 Nd5 12. Bxa6 bxa6 13. O-O f6 14. Nc3 Nxc3 15. Bxc3 Bc4 16. Ra1 e5 17. Qc2 d5 18. e4 dxe4 19. Qxe4 Bd5 20. Qe2 Be7 21. d4 e4 {Daatselaar,J (2177) -Bäckström,M (2228) ICCF 2009 1/2 (59)}) 10... bxa6 11. cxd6 Qxd6 12. Nf3 e6 13. Bxf6 gxf6 14. Qc2 Qc7 15. Nc3 Bxb4 {Gavrijski,D (2143)-Bäckström,M (2228) ICCF 2009 1-0 (54)}) (4. Nf3 axb4 5. Bd4 Qc7 6. axb4 Rxa1 7. Bxa1 d6 (7... Nf6 8. e3 d6 9. Bxf6 exf6 10. c4 Be7 11. Be2 O-O 12. O-O Be6 13. d4 d5 14. c5 b5 15. Nc3 Na6 16. Qb1 Ra8 17. Bd3 g6 18. Qb2 Bg4 19. Nd2 {Hoch,H (2210)-Bujdak,P (2058) ICCF 2006 1/2 (53)}) 8. d4 Nf6 9. Nbd2 g6 10. h3 Bg7 11. e3 b5 12. Bd3 Nd5 13. c3 O-O 14. O-O Nd7 15. Nb3 N7b6 {Böhnke,H (2034)-Pommrich,R (2280) ICCF 2010 1/2 (53)}) (4. c3 Nf6 5. e3 e5 6. Nf3 e4 7. Nd4 d5 8. Nb3 Nbd7 9. d4 axb4 10. cxb4 h6 11. N1d2 Bd6 12. Be2 O-O 13. h3 Re8 14. Nc5 Qc7 15. Rc1 Nf8 { Diener,R (1946)-Katz,A (2241) ICCF 2017 0-1 (33)}) (4. e3 axb4 5. Bd4 Qc7 6. axb4 Rxa1 7. Bxa1 e5 8. b5 Nf6 9. b6 Qd6 10. Nf3 e4 11. Be5 Qc5 12. Bxb8 exf3 13. gxf3 Qxb6 14. Be5 Be7 15. Bh3 O-O {Balañá Romero,R (1780)-Mut Company,G ICCF 2010 0-1 (34)}) 4... axb4 (4... d6 5. Na4 Qc7 6. b5 e5 7. c4 Be7 8. e3 Nf6 9. d4 O-O 10. Ne2 Bg4 11. h3 Bf5 12. Ng3 Bg6 13. Bd3 e4 14. Bb1 d5 15. b6 Qd8 16. c5 {Kural,A (2403)-Quiñones Borda,J (2407) ICCF 2018 1-0 (77)}) 5. axb4 Rxa1 6. Qxa1 Qxb4 7. Na4 (7. e3 Nf6 8. Nf3 d6 9. Be2 Qb6 10. O-O Qc7 11. Qa7 Nbd7 12. Ra1 g6 13. Ne4 Bg7 14. Nxf6+ Nxf6 15. Bc3 O-O 16. Ba5 Qd7 17. Rb1 b5 18. Qxd7 Bxd7 {Yeung,C (1740)-Bäckström,M (2298) ICCF 2006 0-1 (48)}) 7... f6 8. Bc3 Qf4 9. Nb6 Qc7 10. Na8 Qd6 11. e4 Na6 (11... e6 12. Nf3 Qa3 13. Qxa3 Bxa3 14. Nb6 Kd8 15. e5 Be7 16. Ba5 d6 17. d4 dxe5 18. Bc4 Na6 19. Bxa6 e4 ( 19... bxa6 20. dxe5 Bb7 21. O-O c5 22. Rb1 Bc6 23. Nc4+ Kc8 24. Nfd2 Nh6 25. Nb6+ Kd8 26. Nd5+ Kd7 27. Nxe7 {1/2 (27) Fels,B (2205)-Guevara i Pijoan,J (2290) ICCF 2014}) 20. Nd2 bxa6 21. Nxe4 Nh6 22. O-O Nf5 23. Rb1 {Fagerbekk,E (2187)-Conterno,D (2288) ICCF 2013 1/2 (40)}) 12. Nb6 Qc7 13. Nxc8 Qxc8 { Luzuriaga,N (2354)-Bäckström,M (2258) ICCF 2008 1-0 (54)}) (2. e3 Nf6 (2... Qb6 3. a3 a5 (3... Nf6 4. Nf3 a5 5. b5 g6 6. d4 Bg7 7. c4 O-O 8. Nc3 d6 9. bxc6 bxc6 10. Rb1 Qc7 11. Bd3 Nbd7 12. O-O Ba6 13. Bd2 Nb6 14. Qe2 Nbd7 15. Na4 { Muri,H (2400)-Hafner,M (2501) ICCF 2009 1/2 (68)}) 4. b5 d5 (4... cxb5 5. Nc3 e6 6. Nxb5 Nf6 7. Nf3 d5 8. Bb2 a4 9. Be5 Na6 10. Rb1 Qd8 11. d4 Qa5+ 12. Nd2 Bd7 13. Bd3 Bc6 14. O-O Be7 15. c4 O-O 16. Qc2 {Vegjeleki,A (2313)-Bäckström,M (2298) ICCF 2006 1-0}) (4... Nf6 5. c4 cxb5 6. cxb5 d5 7. Bb2 Bf5 8. Nc3 e6 9. Nf3 Nbd7 10. d4 Bd6 11. Bd3 Bxd3 12. Qxd3 O-O 13. O-O Rfc8 14. Rfc1 Qd8 15. Na4 Ne4 16. Ne5 {Champion,W (1842)-Carter,M (1627) ICCF 2007 1/2}) 5. c4 Nf6 6. Nc3 Bf5 (6... g6 7. Bb2 dxc4 8. Bxc4 Bg7 9. Nf3 O-O 10. O-O cxb5 11. Nxb5 Nc6 12. Rb1 Qc5 13. Qc1 Qh5 14. Bxf6 Bxf6 15. Nc3 Bg4 16. Rb5 Qh6 17. Be2 Rac8 18. h3 { Skerlík,S (2300)-Salo,K (2252) ICCF 2012 1-0 (26)}) 7. d4 e6 8. c5 Qd8 9. Nf3 Be7 10. Be2 O-O 11. O-O b6 12. cxb6 Qxb6 13. Nh4 Bg6 14. Nxg6 {Skerlík,S (2295) -Belanoff,S (2185) ICCF 2014 1/2}) (2... a5 3. b5 Nf6 4. Bb2 a4 (4... d5 5. Nf3 (5. a4 e6 6. Nf3 Bd6 7. Ne5 O-O 8. Be2 cxb5 9. Bxb5 Qc7 10. f4 Nc6 11. Bxc6 bxc6 12. O-O Ba6 13. Rf3 Rfb8 14. Nd3 Bxd3 15. Bxf6 Bg6 16. Bc3 Bh5 {Negroni, G-Maylott,P (1950) ICCF 2012 0-1}) 5... Bf5 6. Be2 e6 7. Nh4 Bg6 8. O-O Nbd7 9. c4 dxc4 10. Nxg6 hxg6 11. Bxc4 Ne4 12. bxc6 bxc6 13. g3 Qg5 14. Qf3 Qh6 15. h4 Nd6 16. Be2 {Muri,H (2400)-Ringsborg,A (2411) ICCF 2009 1/2 (31)}) 5. c4 (5. Nf3 d6 6. bxc6 (6. Be2 e5 7. O-O e4 8. Ne1 Be7 9. c4 O-O 10. d3 Bf5 11. dxe4 Nxe4 12. Nd2 d5 13. Nxe4 dxe4 14. Nc2 a3 15. Bc3 Qxd1 16. Rfxd1 c5 17. Rab1 Ra4 {Fernández Fornés,J (2296)-Bericat,Á (2337) ICCF 2013 1/2 (65)}) 6... bxc6 7. c4 e5 8. Be2 Be7 9. O-O O-O 10. d4 e4 11. Nfd2 Qa5 12. Ba3 Bf5 13. Qc1 c5 14. d5 Na6 15. Bb2 Nb4 16. a3 Nd3 {Müller,D (2303)-Eshuis,H (2223) ICCF 2017 1-0 (50)}) 5... cxb5 (5... e6 6. a3 cxb5 7. cxb5 Be7 8. Nc3 Qa5 9. g4 d5 10. g5 Nfd7 11. Qh5 Nc5 12. Nf3 Nb3 13. Rd1 Nd7 14. Rg1 g6 15. Qh4 h5 16. Nxd5 exd5 17. Bxh8 {Fagerbekk,E (2187)-Haapamäki,M (2095) ICCF 2013 1/2 (27)}) 6. cxb5 d5 7. Be2 Bf5 8. Ba3 Nbd7 9. Nf3 e5 10. Bxf8 Kxf8 11. Qc1 g6 12. O-O Kg7 13. Qb2 Re8 14. d4 {Braak,J (1983)-Eshuis,H (2223) ICCF 2017 0-1 (77)}) (2... d5 3. Bb2 (3. Nf3 Nf6 (3... Bf5 4. a3 Nf6 5. Bb2 e6 6. Be2 (6. h3 a5 7. b5 Be7 8. g4 Bg6 9. Ne5 O-O 10. Nxg6 fxg6 11. Bg2 cxb5 12. d3 Nc6 {0-1 (12) Wolff,N (1674) -Raijmaekers,C (2267) ICCF 2012}) 6... Nbd7 (6... Bd6 7. Be5 O-O 8. O-O Bxe5 9. Nxe5 a5 10. Nc3 Qd6 11. f4 axb4 12. axb4 Rxa1 13. Qxa1 d4 14. Na2 dxe3 15. dxe3 Qd2 16. Qd1 Qxe3+ 17. Kh1 Nd5 18. Rf3 {Wilshusen,H (1656)-Baranowski,T (2379) ICCF 2015 0-1 (26)}) 7. Nh4 Bg6 8. O-O a5 9. b5 Bd6 10. f4 Nb6 11. Ra2 Rb8 12. f5 Ne4 13. Qe1 Qc7 14. Rf4 Bxf4 15. exf4 {Rotte,P (1780)-Kappelhof,W (2338) ICCF 2020 0-1}) (3... e5 4. Nxe5 Bxb4 5. Bb2 Nf6 6. Be2 O-O 7. O-O Nbd7 8. Nf3 Bd6 9. d3 Nc5 10. Bd4 Bf5 11. Nbd2 Re8 12. Nh4 Bd7 13. Rb1 b5 14. c4 Qe7 15. cxb5 {Walker,J (1968)-Luzuriaga,N (2378) ICCF 2006 0-1 (44)}) 4. a3 (4. c4 Bg4 5. a3 (5. d3 e5 6. a3 dxc4 7. Nc3 cxd3 8. Qxd3 Qxd3 9. Bxd3 Bxf3 10. gxf3 Bd6 11. Bb2 Nbd7 12. O-O O-O 13. Rfd1 Be7 14. Ne4 Rad8 15. Rac1 a6 16. Nd2 Nd5 { Rook,I (2095)-Iles,S ICCF 2013 1-0 (35)}) 5... a5 6. Bb2 e6 7. b5 Bd6 8. h3 Bxf3 9. Qxf3 O-O 10. Bxf6 Qxf6 11. Qxf6 gxf6 12. d4 dxc4 13. Bxc4 Nd7 14. Nd2 Nb6 15. bxc6 bxc6 {Millstone,M (2447)-Dearnley,A (2341) ICCF 2008 1/2 (47)}) 4... Bg4 5. d4 e6 6. c4 Bd6 7. h3 Bh5 8. Nbd2 Nbd7 9. Be2 O-O 10. O-O Qe7 11. Bb2 Rfe8 12. Rc1 Red8 13. Ne5 Bxe2 14. Qxe2 a5 {Vegjeleki,A (2195)-Bäckström,M (2228) ICCF 2009 1-0 (67)}) 3... Qb6 (3... Bf5 4. Be2 (4. c4 e6 5. a3 Nf6 6. d3 dxc4 7. e4 Bg6 8. e5 Nfd7 9. dxc4 a5 10. b5 Qc7 11. Nf3 Nc5 12. Be2 Be7 13. O-O O-O 14. a4 Nbd7 15. Nbd2 Rfd8 {Stapinski,R (1850)-Wölfelschneider,P (2322) ICCF 2018 0-1 (31)}) (4. Nf3 Nd7 5. c4 Ngf6 6. Be2 e5 7. b5 Bd6 8. d4 e4 9. Nfd2 O-O 10. Nc3 h6 11. c5 Be7 12. O-O Re8 13. h3 Qc7 14. a4 a6 15. bxa6 bxa6 { Heß,H (2335)-Cuttica,G (2122) ICCF 2009 1-0 (41)}) 4... Nf6 5. a3 a5 6. b5 e6 7. Nf3 Bd6 8. Nh4 Bg6 9. h3 Nbd7 10. c4 O-O 11. Nc3 Nb6 12. d3 Qe7 13. O-O Nfd7 14. Nxg6 hxg6 15. bxc6 {Schreuders,A (2335)-Dam,J (2118) ICCF 2020 1/2 (34)}) 4. a3 a5 (4... Bf5 5. Nf3 h6 6. c4 e6 7. Bd4 Qd8 8. cxd5 exd5 9. Be2 Nf6 10. O-O Bd6 11. d3 O-O 12. Bc5 Bxc5 13. bxc5 Qe7 14. Qb3 Qc7 15. Rc1 Nbd7 16. Qc2 { Mai,W (2046)-Carter,M (1706) ICCF 2011 1/2 (30)}) 5. b5 (5. c3 Nf6 6. d3 Bg4 7. Be2 Bxe2 {0-1 (7) Akman,O-Bäckström,M (2298) ICCF 2006}) 5... Nf6 6. c4 (6. Bd3 c5 {0-1 (6) Walker,J (1943)-Haznedaroglu,K (2293) ICCF 2008}) 6... Bg4 7. Nf3 Nbd7 8. Nc3 e6 9. d4 Be7 {Taulien,H (2398)-Heß,H (2339) ICCF 2009}) (2... e5 3. a3 (3. Bb2 Bxb4 4. Bxe5 Nf6 5. c3 Be7 6. d4 O-O 7. Bxf6 Bxf6 8. Bd3 d5 9. Nd2 Be7 10. Ngf3 Nd7 11. O-O Nf6 12. Qc2 Re8 13. Rab1 Qc7 14. c4 dxc4 {Vegjeleki,A (2145)-Walker,J (1943) ICCF 2008 1-0 (33)}) 3... Nf6 4. Nf3 d6 5. Be2 a5 6. bxa5 Qxa5 7. O-O Be7 8. d4 e4 9. Nfd2 Qg5 10. f4 Qg6 11. Nc3 d5 12. a4 Bh3 13. Rf2 Bb4 14. Bb2 {Yeung,C (1642)-Walker,J (1943) ICCF 2008 1-0}) (2... e6 3. a3 Nf6 4. Nf3 Be7 5. d4 d5 6. c4 a5 7. b5 O-O 8. Nc3 Nbd7 9. Bb2 c5 10. cxd5 exd5 11. Be2 c4 12. O-O Bd6 13. Nd2 Nb6 14. e4 {Vegjeleki,A (2195)-Luzuriaga,N (2336) ICCF 2009 1/2 (33)}) 3. Bb2 (3. Nf3 a5 4. b5 a4 (4... g6 5. Be2 (5. Bb2 Bg7 6. Be2 cxb5 7. Bxb5 Nc6 8. O-O O-O 9. c4 d5 10. cxd5 Nxd5 11. Bxg7 Kxg7 12. d4 Bf5 13. Bxc6 bxc6 14. Nbd2 Nf6 15. Rc1 Qd5 16. Qb3 Qxb3 {Bäckström,M (2258) -Luzuriaga,N (2354) ICCF 2008 1/2 (44)}) 5... Bg7 6. a4 O-O 7. O-O c5 8. c4 d6 9. Bb2 b6 10. Ne1 Nbd7 11. Bf3 Rb8 12. d3 e6 13. g3 d5 14. Nd2 Bb7 15. Rc1 Re8 16. Bg2 {Marquardt,G (2198)-Walther,J (2189) ICCF 2018 1/2 (36)}) (4... d5 5. h3 e6 6. c4 Be7 7. Nc3 O-O 8. Be2 Ne4 9. Bb2 Nxc3 10. Bxc3 cxb5 11. cxb5 Nd7 12. O-O Bd6 13. d4 Nf6 14. Bd3 Ne4 15. Bxe4 dxe4 16. Nd2 {Martinson,R (2086) -Kries,Y (2056) ICCF 2009 1-0 (41)}) 5. c4 cxb5 6. cxb5 d5 7. Nc3 Bg4 8. Nxa4 e5 9. Qb3 Nbd7 10. b6 Bd6 11. Be2 O-O 12. O-O e4 13. Nd4 Bxe2 14. Nxe2 Bxh2+ { Kazmierczuk,Z (2074)-Forney,R (1988) ICCF 2013 0-1 (35)}) (3. h4 d5 4. Nf3 e5 5. Bb2 e4 6. Ne5 Bxb4 7. a3 Bd6 8. Be2 Qe7 9. O-O Bxe5 10. Nc3 O-O 11. d4 Bd6 12. f4 exf3 13. Bxf3 Qxe3+ 14. Rf2 Bg3 {Kissick,P (1548)-Gunkel,W ICCF 2006 0-1 }) 3... d5 (3... e6 4. a3 a5 5. b5 d5 6. Nf3 Nbd7 (6... Be7 7. c4 O-O 8. Nc3 Bd7 9. Be2 dxc4 10. Bxc4 {1-0 (10) Roig García,J (1783)-Grima Pallás,O ICCF 2014}) (6... Bd6 7. c4 Nbd7 (7... O-O 8. Nc3 Nbd7 9. d4 dxc4 10. Bxc4 c5 11. Na4 b6 12. Ne5 Bb7 13. Nxd7 Nxd7 14. dxc5 Nxc5 15. Qg4 g6 16. Nxc5 Bxc5 17. h4 Bd5 18. h5 Bxc4 19. Qxc4 {Taulien,H (2380)-Andersen,J (2156) ICCF 2011 1/2 (36) }) 8. d4 dxc4 9. bxc6 bxc6 10. Nbd2 Qc7 11. Nxc4 O-O 12. Bd3 Ba6 13. O-O Rab8 14. Qc2 Bxc4 15. Bxc4 c5 16. Rfc1 Rb6 17. dxc5 Nxc5 18. Bd4 {Marconi,R (1961) -Spooner,M (1969) ICCF 2016 1/2 (60)}) (6... cxb5 7. Bxb5+ Bd7 8. Nc3 Bd6 9. O-O O-O 10. Bxd7 Nbxd7 11. Nb5 Bb8 12. a4 Re8 13. d3 e5 14. Nd2 Ra6 15. Nb3 e4 16. Qe2 Ne5 17. Bxe5 Rxe5 18. N3d4 {Blittkowsky,R (2095)-Hjaltason,G (2148) ICCF 2013 1/2 (26)}) 7. d4 Nb6 8. Nbd2 Na4 9. Qb1 Bd7 10. bxc6 bxc6 11. Qa2 Nxb2 12. Qxb2 Rb8 13. Qc1 c5 14. c4 Be7 15. cxd5 {Frydendal,O (1843)-Rattay,W (1829) ICCF 2010 1/2 (30)}) (3... Qb6 4. a3 a5 5. b5 d6 6. c4 e5 7. Be2 cxb5 8. cxb5 Bf5 9. d4 e4 10. Nc3 d5 11. g4 Be6 12. Nh3 h6 13. Nf4 Nbd7 14. Rc1 Bd6 15. Na4 {Muri,H (2355)-Riemer,W (2377) ICCF 2012 1/2 (40)}) 4. Nf3 (4. f4 Bg4 5. Be2 Bxe2 6. Qxe2 e6 7. a3 Bd6 8. Nf3 O-O 9. O-O Nbd7 10. c4 a5 11. c5 Bc7 12. Nc3 Qe7 13. d4 b5 14. Ne5 Nb8 15. e4 dxe4 {Wagner,R (2114)-Cross,G (2018) ICCF 2007 1-0 (41)}) 4... Bf5 (4... Bg4 5. c4 (5. Be2 e6 6. a3 Nbd7 7. O-O (7. Nc3 Bd6 8. Nd4 Ne5 9. f3 Bh5 10. d3 a5 11. O-O Ned7 12. f4 Bxe2 13. Qxe2 axb4 14. axb4 Rxa1 15. Rxa1 Bxb4 16. e4 Bc5 17. Na4 dxe4 18. dxe4 {Luzuriaga,N (2336) -Zylla,J (2129) ICCF 2009 0-1 (65)}) 7... Bd6 8. Nd4 (8. d3 a5 (8... O-O 9. h3 Bh5 10. Nbd2 Re8 11. c4 Rc8 12. c5 Bb8 13. Nh2 Qc7 14. g3 Bxe2 15. Qxe2 Qd8 16. Rad1 Be5 17. Bxe5 Nxe5 18. d4 Ned7 {1/2 (18) Flewelling,H-Dorin,A ICCF 2013}) 9. Nbd2 axb4 10. a4 O-O {Williams,B-Arkefeldt,F (2021) ICCF 2020}) 8... Bxe2 { 0-1 (8) Rudbeck,J (2407)-Pereverzev,A ICCF 2005} 9. Qxe2 O-O 10. f4 c5 (10... Qc7 11. Nc3 Rfe8 12. Qf3 a5 (12... Nb6 13. d3 a5 14. bxa5 Rxa5 15. a4 {Morley, P (2277)-Michael,D (2041) ICCF 2008 0-1 (60)}) 13. b5 c5 14. Nde2 Nb6 15. Ng3 Nc4 16. Bc1 d4 17. Nce4 Nxe4 18. Nxe4 Be7 19. Qe2 Nb6 20. Ng3 Nd5 21. Bb2 Rad8 22. Rf3 {Szabo,A (2310)-Stanciu,A ICCF 2006 1/2 (60)}) 11. bxc5 Bxc5 12. Nb3 Bd6 13. Bd4 b6 14. Ra2 Qe7 15. Nc3 a6 16. a4 Rfe8 {Stapinski,R (1993)-Bortnik, E (2108) ICCF 2007 1/2 (74)}) (5. h3 Bxf3 6. Qxf3 Nbd7 7. c4 e6 8. a3 Be7 9. d4 O-O 10. Nd2 dxc4 11. Bxc4 Nb6 12. Bb3 a5 13. bxa5 Rxa5 14. O-O Na4 15. Bc1 Nc3 16. Bc2 Ra8 {Whittaker,I (2083)-Blake,M (2369) ICCF 2020 1/2 (31)}) 5... Nbd7 ( 5... e6 6. c5 (6. Qb3 Nbd7 7. cxd5 (7. Be2 Be7 8. cxd5 cxd5 9. Nc3 Rc8 10. d3 Qb6 11. a3 O-O 12. O-O Rc7 13. Rfc1 Rfc8 14. h3 Bh5 15. Na4 Qd6 16. Rxc7 Rxc7 17. Nc3 a6 18. Nd4 Bxe2 {Jiménez Ariza,J (2299)-Monreal Godina,J (1906) ICCF 2012 1/2 (56)}) 7... exd5 8. Nd4 Qb6 9. h3 Be6 10. Bc3 Ne4 11. a3 a5 12. bxa5 Qxb3 13. Nxb3 Ndc5 14. Nxc5 Nxc5 15. d4 Nb3 16. Ra2 Nxa5 {Wantoch-Rekowski,J (2305)-Walczak,A (2369) ICCF 2006 1/2 (37)}) 6... Nbd7 (6... b6 7. d4 a5 8. a3 axb4 9. axb4 Nbd7 10. Nbd2 Be7 11. h3 Bf5 12. b5 Rxa1 13. Qxa1 O-O 14. bxc6 Nb8 15. Bb5 bxc5 16. Bc3 Ne4 17. Nxe4 dxe4 18. Ne5 {Müller,D (2375)-Sadler,K (1855) ICCF 2016 1-0 (26)}) (6... Bxf3 7. Qxf3 a5 8. a3 Na6 9. Bxa6 Rxa6 10. h3 Be7 11. O-O O-O 12. Rc1 b6 13. Qe2 Ra8 14. d3 Qb8 15. Qc2 bxc5 16. bxc5 e5 17. Nc3 Nh5 18. Ne2 {Lykke,H (2443)-Timofeev,A (2375) ICCF 2019 1/2 (34)}) 7. Be2 b6 8. d4 Rb8 9. Qc1 bxc5 10. bxc5 Be7 11. Nbd2 Qc7 12. h3 Bf5 13. O-O Ne4 14. Nxe4 Bxe4 15. Nd2 Bf5 16. Bc3 O-O 17. Ba6 {Marconi,R (2100)-Egan,M (2140) ICCF 2008 1/2 (26)}) 6. Be2 e6 7. b5 Bd6 (7... Be7 8. O-O O-O 9. a4 Rc8 10. h3 Bh5 11. cxd5 cxd5 12. d3 Bxf3 13. Bxf3 Bb4 14. Na3 a5 15. Nc2 Bd6 16. Nd4 Re8 17. Rc1 Rxc1 18. Qxc1 Bb4 19. Nb3 {Avchinikov,V (2355)-Lukas,N (2377) ICCF 2019 1-0 (93)}) 8. h3 (8. a4 a6 9. O-O axb5 10. axb5 Rxa1 11. Bxa1 O-O 12. h3 Bxf3 13. Bxf3 Qa5 14. Bc3 Bb4 15. bxc6 {Skerlík,S (2234)-Rodriguez,L (2295) ICCF 2019 1/ 2}) 8... Bh5 9. a4 O-O 10. O-O Rc8 (10... e5 11. d4 e4 12. Nfd2 Bxe2 13. Qxe2 Re8 14. Nc3 Rc8 15. a5 Bb4 16. c5 Bxa5 17. Nb3 Bxc3 18. Bxc3 Ra8 19. bxc6 bxc6 20. Rfb1 Qc7 21. Na5 Reb8 22. Rxb8+ {Schmidt,K (2161)-Tunks,A ICCF 2011 1-0}) 11. bxc6 bxc6 12. d4 Rb8 13. Ba3 Bxa3 14. Nxa3 Bxf3 15. Bxf3 Qa5 16. Qc2 { Müller,D (2303)-Kersten,U (2255) ICCF 2017 1/2}) 5. c4 e6 6. c5 (6. cxd5 exd5 7. a3 Bd6 8. Be2 O-O 9. d3 a5 10. bxa5 Qxa5+ 11. Bc3 Qa4 12. Bxf6 Qxd1+ 13. Kxd1 gxf6 14. Nd4 Bd7 15. Nc2 Be6 16. Nc3 Nd7 17. Kd2 b5 {Fagerbekk,E (2220) -Hagen,T (2285) ICCF 2010 1/2 (62)}) 6... Be7 (6... b6 7. d4 Nbd7 8. Bd3 a5 9. a3 Be7 10. O-O O-O 11. Bxf5 exf5 12. Qc2 Ne4 13. Nbd2 (13. Rc1 Qc7 14. Nc3 Rfb8 15. b5 bxc5 16. dxc5 Bxc5 17. a4 cxb5 18. axb5 Qb7 19. Ne5 Nxe5 20. Nxe4 dxe4 21. Bxe5 Rc8 22. Qb2 f6 23. Bg3 h5 24. Qb3+ Kh7 {Kural,A (2325)-Kain,T (2384) ICCF 2012 1/2 (30)}) 13... Qc7 14. Nb3 (14. Rfb1 Bf6 15. Ne1 g6 16. Nd3 Bg7 17. Nf3 Rfb8 18. Rc1 b5 19. a4 axb4 20. axb5 {Kural,A (2324)-Sjøl,H (2232) ICCF 2013 1/2 (63)}) 14... Qb7 15. Ne1 axb4 16. axb4 Rxa1 17. Bxa1 bxc5 18. Nxc5 { Heß,H (2312)-Salzmann,S (2231) ICCF 2012 1/2}) (6... Nbd7 7. Be2 Be7 (7... h6 8. Nc3 Be7 9. O-O O-O 10. d4 b6 11. Rc1 Rc8 12. a3 a5 13. Na4 b5 14. Nc3 Ra8 15. Bd3 Qc7 16. Qc2 Bxd3 17. Qxd3 Ra6 18. Qc2 Rfa8 19. Rcd1 {Fels,B (2147) -Sodomski,A (2044) ICCF 2012 1/2 (27)}) 8. O-O O-O 9. Nh4 a5 10. Nxf5 exf5 11. a3 b6 12. d4 Qc7 13. Nc3 g6 14. Qc2 b5 15. bxa5 Ng4 16. g3 h5 17. a6 h4 { Müller,D (2379)-Pommrich,R (2254) ICCF 2016 1/2 (61)}) 7. Be2 (7. Nc3 O-O 8. d4 Qc7 9. Be2 h6 10. O-O b6 11. Rc1 Rc8 12. Na4 b5 13. Nc3 h5 14. a4 a6 15. Ra1 Nbd7 16. Ra2 g6 17. h3 Ne4 18. Qb3 Nxc3 {Buss,M (2206)-Sesko,M (2205) ICCF 2019 1/2 (46)}) 7... O-O (7... a5 8. a3 O-O 9. Nh4 Bxb1 10. Qxb1 b6 11. cxb6 axb4 12. axb4 Rxa1 13. Bxa1 Qxb6 14. b5 Nbd7 15. O-O Rb8 16. f4 Ne4 17. Nf3 Nxd2 18. Nxd2 Qxe3+ 19. Kh1 {Wilshusen,H (1317)-Kästner,M ICCF 2019 0-1 (30)}) 8. O-O a5 9. a3 b6 10. d4 Nbd7 11. Nbd2 h6 12. Bc3 bxc5 (12... Re8 13. h3 Qb8 14. Ne1 Rd8 15. Bd3 Ne4 16. Qc2 axb4 17. axb4 Rxa1 18. Bxa1 Ndf6 19. Nb3 Qc7 20. Nf3 Ra8 21. Ne5 Bf8 22. Bb2 Rb8 23. Ra1 Nd7 24. Nxd7 {Müller,D (2379)-Just, J (2208) ICCF 2016 1/2 (36)}) 13. bxc5 Qc7 {Müller,D (2379)-Fischer,D (2310) ICCF 2016 1/2 (43)} 14. Ra2 e5 15. Rb2 Rfe8 16. a4 Bg6 17. Re1 Bf8 18. Qb3 { Ilzig,G-Rózanski,R (2067) ICCF 2016 1/2 (37)}) (2. e4 e5 (2... Qb6 3. c3 a5 4. bxa5 Rxa5 5. d4 e5 6. Nd2 Qa7 7. Nc4 Rxa2 8. Rxa2 Qxa2 9. dxe5 Bc5 10. Nd6+ Bxd6 11. Qxd6 Qb1 12. Kd2 Qa2+ 13. Ke3 Qa7+ 14. Kf3 {Sodomski,A (1934)-Stasiak, W ICCF 2008 1-0 (25)}) 3. Bb2 (3. c3 d5 4. exd5 cxd5 5. Bb5+ Bd7 6. Bxd7+ { 1-0 (6) Aannevik,B (1568)-Akman,O ICCF 2006}) (3. Nf3 d5 4. a3 Nf6 5. Nxe5 Nxe4 6. d4 Nd7 7. Nd2 Qe7 8. Nxe4 Nxe5 9. Nd6+ Qxd6 10. Qe2 Bf5 11. dxe5 Qe6 12. g3 a5 13. b5 Bc5 14. Bb2 Qg6 {Straka,J-Jakubcin,M ICCF 2009 0-1 (32)}) 3... d5 4. exd5 Bxb4 5. Qe2 Nf6 6. Qxe5+ Be7 7. d6 Qxd6 8. Qxd6 Bxd6 9. Bxf6 gxf6 10. Nc3 O-O 11. d4 Re8+ 12. Kd2 c5 13. dxc5 Bf4+ {Wallner,J (2333)-Luzuriaga,N (2378) ICCF 2006 0-1 (60)}) (2. Nf3 d5 3. a3 a5 4. b5 Nf6 5. e3 g6 6. Bb2 Bg7 7. Be2 O-O 8. O-O Bg4 9. bxc6 Nxc6 10. a4 Rc8 11. Na3 Ne4 12. Bxg7 Kxg7 13. Nb5 e5 { Jung,R (2275)-Grobler,D (2199) ICCF 2017 1/2 (33)}) (2. a3 Nf6 3. Nc3 a5 4. Na4 axb4 5. axb4 b5 6. c3 g6 7. Nf3 Bg7 8. d4 d6 9. Qb3 Be6 10. Qd1 {1-0 (10) Cviková,K-Plsková,M ICCF 2009}) (2. d4 a5 3. Bd2 Qb6 4. bxa5 Qxd4 5. c3 Qc5 6. Nf3 Qxa5 7. c4 Qa4 8. Qxa4 Rxa4 9. e4 d6 10. Nc3 Ra3 11. Nb1 Ra8 12. Bd3 Nd7 13. Nc3 Ngf6 {Aannevik,B (1568)-Bäckström,M (2298) ICCF 2006 0-1 (37)}) (2. g4 d5 3. h3 h5 4. g5 e5 5. c3 Qxg5 6. Nf3 Qe7 7. Bb2 Nd7 8. Bg2 e4 9. Nd4 Rh6 10. e3 Ne5 11. O-O Bxh3 12. Bxh3 Rg6+ 13. Kh2 Ng4+ {Vaessen,J (1143)-Barendswaard, W (2111) ICCF 2020 0-1}) 2... e5 (2... Qb6 3. Qb3 a5 (3... d6 4. Nf3 e5 5. d3 Nf6 6. Be3 {1-0 (6) Yeung,C (1740)-Akman,O ICCF 2006}) 4. b5 a4 (4... d5 5. cxd5 cxb5 6. Nc3 Bd7 7. a3 e6 8. dxe6 fxe6 9. e3 b4 10. axb4 Bxb4 11. Nf3 Nf6 12. Bc4 Na6 13. O-O O-O 14. Ne5 Nc5 15. Qc2 Qc7 16. d4 {Welti,M (2042) -Armstrong,A (1893) ICCF 2014 1-0 (78)}) 5. Qc2 Nf6 6. Nc3 g6 7. Rb1 d5 8. cxd5 Bf5 9. e4 Nxe4 10. Nxe4 cxd5 11. Bb2 Rg8 12. f3 dxe4 13. fxe4 Be6 14. Nf3 { Walker,J (1824)-Winter,M (1955) ICCF 2017 0-1 (37)}) (2... d5 3. e3 (3. c5 a5 4. Qb3 axb4 5. d4 e5 6. e3 Nd7 7. Bb2 exd4 8. exd4 b6 9. cxb6 Bd6 10. Nd2 Qxb6 11. Ngf3 Ngf6 12. Qe3+ Kd8 13. Be2 Re8 14. Qg5 Ba6 {Bonatti,A (2024)-Luzuriaga, N (2378) ICCF 2006 0-1}) 3... e5 (3... Nf6 4. Bb2 Nbd7 (4... Bf5 5. cxd5 cxd5 6. a3 e6 7. Nf3 Be7 8. Be2 a5 9. Nh4 Bg6 10. b5 Nbd7 11. O-O a4 12. Nxg6 hxg6 13. d4 Ne4 14. Nd2 Bd6 15. g3 Ndf6 16. Rc1 {Ringsborg,A (2383)-Jørgensen,P (2282) ICCF 2014 1/2 (48)}) 5. Nf3 e6 6. c5 a5 7. a3 axb4 8. axb4 Rxa1 9. Bxa1 b6 10. d4 Be7 11. Bd3 O-O 12. O-O h6 13. Qc2 Qc7 14. Nbd2 Qa7 15. Bc3 { Whittaker,I-Kent,C (1608) ICCF 2018 1-0}) 4. Bb2 Bxb4 5. Bxe5 Nf6 6. cxd5 O-O 7. dxc6 Nxc6 8. Bc3 Qe7 9. Nf3 Rd8 10. Bxb4 Nxb4 11. a3 Nbd5 12. Be2 Bg4 13. O-O Rac8 14. h3 {Cottarelli,F (2106)-Bäckström,M (2258) ICCF 2008 1/2}) 3. Bb2 (3. a3 a5 (3... Nf6 4. Bb2 d6 5. e3 Be7 6. Nf3 Bg4 7. Be2 Nbd7 8. d3 O-O 9. O-O b6 10. Nc3 h6 11. h3 Bf5 12. e4 Bh7 13. Re1 a6 14. Bf1 Nh5 15. d4 {Thau,O (1771)-Nilsson,E (1676) ICCF 2019 1/2 (39)}) 4. Bb2 axb4 5. axb4 Bxb4 6. Rxa8 { 1-0 (6) Giachè,G-Akman,O ICCF 2006}) 3... f6 4. a3 d5 5. e3 Be6 6. cxd5 Bxd5 ( 6... cxd5 7. d4 e4 8. Nc3 Nc6 (8... Bd6 9. Nh3 f5 10. Qh5+ g6 11. Qg5 Nf6 12. Be2 Nc6 13. O-O Bf7 14. Qh6 Ng4 {1/2 (14) Bjazevic,P (2245)-Zylla,J (2267) ICCF 2008}) 9. Na4 Nge7 10. Nc5 Bc8 11. Ne2 b6 12. Nb3 Ba6 13. Nf4 Bxf1 14. Rxf1 Qd7 15. f3 exf3 16. Qxf3 O-O-O 17. b5 Nb8 18. a4 {Vegjeleki,A (2145) -Zylla,J (2267) ICCF 2008 1-0 (40)}) 7. Nc3 Be6 8. Nf3 g6 9. d4 Nd7 10. dxe5 fxe5 11. Ne4 Bg4 12. Qb3 Qe7 (12... Bxf3 13. Qe6+ Qe7 14. Nd6+ Kd8 15. Nxb7+ Kc7 16. Nc5 Bg4 17. Na6+ Kb7 18. Qxg4 Nh6 19. Qe4 Bg7 20. b5 Nb8 21. bxc6+ Nxc6 22. Rb1 Rac8 23. Bxe5+ {1-0 (23) Cottarelli,F (2185)-Kubácek,J ICCF 2006}) 13. Rd1 {Gavrijski,D (2010)-Kubácek,J ICCF 2006 1-0}) (1... d6 2. Bb2 (2. d4 Nf6 3. Nc3 Nbd7 (3... e6 4. Nf3 Be7 5. e3 Nbd7 6. h3 a5 7. bxa5 d5 8. a6 b6 9. a4 O-O 10. Bb5 Bxa6 11. Bb2 c6 12. Bxc6 Qc7 13. Bb5 Bb4 14. Qd3 Bxb5 15. axb5 { Jatkowski,S-Martinec,J (1854) ICCF 2018 0-1 (27)}) 4. e4 e5 5. d5 c6 6. dxc6 bxc6 7. a3 Be7 8. Bc4 a5 9. b5 Bb7 10. bxc6 Bxc6 11. Bd5 Nxd5 12. Nxd5 Bxd5 13. Qxd5 O-O {Jatkowski,S-Larsen-Barr,D ICCF 2020 0-1 (27)}) (2. Nf3 e5 3. Nc3 g6 4. d4 Nd7 5. d5 Ngf6 6. Bb2 c6 7. e4 cxd5 8. Nxd5 Nxd5 9. Qxd5 Be7 10. Be2 a5 11. O-O-O axb4 12. Bxe5 dxe5 13. Nxe5 O-O {Domenche Redondo,F (1778)-Recasens Sánchez,J (1933) ICCF 2019 0-1}) 2... e5 (2... Nd7 3. a4 Ngf6 4. e3 g6 5. Nf3 Bg7 6. Be2 O-O 7. O-O b6 8. c4 Bb7 9. Nc3 c5 10. b5 Ne4 11. Qc1 Nxc3 12. Bxc3 Bxc3 13. Qxc3 Nf6 14. d4 {Visser,A (1849)-Coope,D (1816) ICCF 2019 0-1}) 3. c4 (3. Nf3 e4 (3... f5 4. b5 (4. e3 Nf6 5. Be2 Be7 6. O-O O-O 7. d3 a6 8. c4 b6 9. c5 b5 10. a4 c6 11. Qb3+ Kh8 12. cxd6 Bxd6 13. Bxe5 Bxe5 14. Nxe5 Qd5 15. Qxd5 cxd5 {Dam,J (2118)-Sommeling,G (1686) ICCF 2020}) 4... Nf6 5. g3 b6 6. Bg2 Bb7 7. c4 Be7 8. O-O O-O 9. Nc3 Nbd7 10. Nxe5 Bxg2 11. Nxd7 Bb7 12. Nxf8 Qxf8 13. f3 Qf7 14. Qb3 Kh8 15. e4 {Coope,D (1921)-MacMillen,A (1704) ICCF 2017 1-0 (38) }) 4. Nd4 c5 5. bxc5 dxc5 6. Nb3 Nc6 7. e3 Nf6 8. Be2 (8. Bb5 Bd7 9. O-O Bd6 10. f4 a6 11. Be2 O-O 12. d3 exd3 13. Qxd3 Be7 14. Bf3 Qc7 15. c4 Rad8 16. Qe2 Rfe8 17. g4 h6 18. N1d2 a5 19. g5 hxg5 {Taulien,H-Khokhlov,I (2407) ICCF 2006 1-0 (48)}) 8... b6 9. c4 Nb4 10. O-O Bb7 11. Nc3 Be7 12. Nc1 Qd7 13. d4 exd3 14. Nxd3 Nxd3 {Jiménez Molina,P-Cadarett,J ICCF 2015 1-0 (33)}) (3. e4 Nf6 4. Nc3 (4. d3 g6 5. Nf3 (5. h3 Bg7 6. Nf3 O-O 7. Be2 b6 8. O-O Bb7 9. a3 Nbd7 10. Nc3 Nh5 11. Bc1 Nhf6 12. Bb2 Nh5 13. Bc1 {1/2 (13) Lindahl,R (1771)-Toye,D (1655) ICCF 2017}) 5... Bg7 6. c4 O-O 7. Be2 Nbd7 8. O-O c5 9. b5 b6 10. Nc3 Bb7 11. a4 Ne8 12. Nd5 f5 13. exf5 gxf5 14. Qd2 f4 15. a5 Nef6 {Martínez Muñoz, J (1654)-Mascaró Pastor,M (1579) ICCF 2015 0-1 (30)}) 4... Be7 (4... c5 5. b5 Bg4 (5... Be7 6. Nf3 O-O 7. Bc4 Nbd7 8. O-O Nb6 9. d3 h6 10. Bb3 Nh7 11. a4 Bg4 12. a5 Nd7 13. h3 Bh5 14. g4 Bg6 15. Nd5 Ng5 16. Nxe7+ Qxe7 17. Nxg5 {Straka, J-Boldocki,M ICCF 2009 1-0 (40)}) 6. Be2 a6 7. Bxg4 h5 8. Bh3 axb5 9. Nxb5 Ra5 10. Nc3 d5 11. exd5 Nxd5 12. Nf3 Nc6 13. O-O Qd6 14. Nxd5 Qxd5 15. Qb1 e4 16. Ne1 {Neumann,F (1574)-Navara,E (1546) ICCF 2012 1-0 (40)}) (4... Be6 5. a3 a6 ( 5... Bg4 6. Be2 Be7 7. Nf3 O-O 8. d4 Nc6 9. d5 Bxf3 10. Bxf3 Nd4 11. Qd3 c6 12. O-O cxd5 13. exd5 Nxf3+ 14. Qxf3 Qd7 15. a4 Rac8 16. Qd3 Qg4 17. f4 {Moeckel,J (2020)-Schuster,P ICCF 2008 0-1 (39)}) 6. Nge2 Nbd7 7. Ng3 Be7 8. Be2 O-O 9. O-O b5 10. d4 Nb6 11. a4 bxa4 12. Nxa4 Bc4 13. c3 Bxe2 14. Qxe2 Nxa4 15. Rxa4 exd4 16. cxd4 {Bray,P-Ricketts,M ICCF 2017 0-1 (66)}) 5. Nf3 O-O 6. a3 (6. Bc4 c6 7. a3 a5 8. O-O Qb6 9. d3 axb4 10. axb4 Rxa1 11. Qxa1 Qxb4 12. h3 b5 13. Rb1 Qc5 14. Bb3 Qb6 15. Bc1 Qc7 16. Ne2 h6 17. Bd2 Nbd7 {Straka,J-Durco,J ICCF 2009 0-1 (51)}) (6. Be2 Nc6 7. a3 a5 8. b5 Nd4 9. Nxd4 exd4 10. Na4 Nxe4 11. Bxd4 Bf6 12. Bxf6 Qxf6 13. O-O Qd4 14. d3 Nxf2 15. Rxf2 Qxa4 16. d4 Re8 17. c4 Qxd1+ {Neumann,F (1641)-Lifanov,V ICCF 2008 0-1 (36)}) 6... Bg4 7. h3 Be6 8. d4 c5 9. d5 cxb4 10. axb4 Bd7 11. b5 a6 12. Nd2 Bc8 13. Qf3 Nbd7 14. bxa6 bxa6 { Carradori,D-Parente,M (2006) ICCF 2009 1-0 (39)}) (3. e3 Nf6 (3... Nc6 4. b5 Nce7 (4... Na5 5. d3 Nf6 6. Be2 c6 7. c4 c5 8. Nc3 a6 9. a4 g6 10. Bf3 Bg7 11. Nge2 h5 12. Nc1 Bg4 13. h3 Bf5 14. Ne4 Bxe4 15. dxe4 Nxc4 16. Bc3 {Wilshusen,H (1314)-Bruno,G (1722) ICCF 2020 0-1 (34)}) 5. Nc3 (5. d4 exd4 6. exd4 Nf6 7. Bd3 Be6 8. Nf3 Ned5 9. O-O Nf4 10. Nc3 Nxd3 11. Qxd3 d5 12. Ng5 Bf5 13. Qxf5 { 1-0 (13) Theis,B (1714)-Asikanius,K (1751) ICCF 2017}) 5... Nf6 6. Nf3 Ng6 7. Bd3 d5 8. Bxg6 hxg6 9. Nxe5 Bd6 10. d4 Qe7 11. Qe2 Be6 12. f3 O-O-O 13. O-O-O Kb8 14. Nb1 Nd7 15. f4 {Stasiak,W (1564)-Sodomski,A (1926) ICCF 2010 0-1}) ( 3... Nd7 4. c4 (4. Nf3 Ngf6 5. d4 exd4 6. Bxd4 Be7 7. c4 O-O 8. a3 c5 9. bxc5 dxc5 10. Bb2 Ne4 11. Bd3 Qa5+ 12. Nfd2 Nxd2 13. Nxd2 Bf6 14. Qc2 Bxb2 15. Qxb2 Qc7 {Skerlík,S (2241)-Ferre Pérez,A (2161) ICCF 2017 1/2 (28)}) 4... f5 5. Nc3 Ngf6 6. a3 Be7 7. Be2 O-O 8. d3 c6 9. Nf3 Ne8 10. O-O Nb6 11. c5 Nd7 12. cxd6 Bxd6 13. e4 f4 14. d4 Nef6 15. Nb5 {Hospers,B (1993)-Sommeling,G (1686) ICCF 2020 1-0}) (3... g6 4. d4 (4. Nf3 Bg7 5. Be2 Qe7 6. O-O Nd7 7. c4 f6 8. Nc3 c6 9. b5 a6 10. bxc6 bxc6 11. a4 f5 12. Qc2 Ra7 13. Ba3 Ndf6 14. Rfd1 Nh6 15. d3 O-O {Neumann,F (1516)-Lakbur,L (1581) ICCF 2020 0-1 (38)}) 4... exd4 5. Qxd4 f6 6. Nc3 Bg7 7. b5 Nd7 8. h4 Nc5 9. Nge2 Ne7 10. h5 Kf7 11. h6 Bf8 12. Nf4 Be6 13. O-O-O Nf5 14. Nxe6 Nxe6 15. Qd5 {Schreuders,A (2335)-Sommeling,G (1686) ICCF 2020 1-0}) (3... Be7 4. Bc4 Nd7 5. Nf3 Ndf6 6. h3 Bf5 7. Nh4 Bg6 8. d3 Qd7 9. c3 O-O-O 10. a4 d5 11. Bb3 c5 12. b5 b6 13. c4 d4 14. e4 Bd6 15. a5 { Azzi,R (1556)-Pereyra,D (1492) ICCF 2017 1-0 (41)}) (3... c6 4. Nf3 Nf6 5. Be2 e4 6. Nd4 d5 7. O-O Bxb4 8. a3 Be7 9. c4 c5 10. Nc2 dxc4 11. Nc3 Be6 12. a4 Nc6 13. Na3 Na5 14. Qc2 O-O 15. Rfd1 {Neumann,F (1571)-Secondi,A (1555) ICCF 2013 0-1 (45)}) 4. Nf3 (4. Bc4 d5 5. Bb3 Nc6 6. a3 Bd6 7. Ne2 O-O 8. Ng3 Be6 9. Qe2 e4 10. d4 Ne7 11. c4 Bxg3 12. hxg3 h6 13. Nc3 Qd7 14. c5 a6 15. Kd2 Rab8 { Wilshusen,H (1317)-Giessing,K (1385) ICCF 2019 1-0 (43)}) (4. Ne2 g6 5. Ng3 Bg7 6. Be2 O-O 7. O-O Re8 8. d3 c6 9. c4 Nbd7 10. a4 a5 11. b5 h5 12. Bf3 d5 13. Nd2 h4 14. Ne2 e4 15. dxe4 dxe4 {Karpoff,K (1785)-Tassone,R ICCF 2013 0-1 (27)} ) (4. Be2 Be7 5. d3 O-O 6. Nd2 Be6 7. a4 Nbd7 8. Ngf3 d5 9. b5 e4 10. Nd4 exd3 11. cxd3 Ne5 12. Nxe6 fxe6 13. Bxe5 Bc5 14. O-O Nd7 15. Bc3 Bd6 {Whittaker, I-Fowler,D ICCF 2018 1-0}) 4... Be7 (4... e4 5. Nd4 (5. Bc4 exf3 6. O-O fxg2 7. Kxg2 Ne4 8. d3 Qg5+ 9. Kh1 Bh3 10. Nd2 Qg2# {0-1 (10) Abulisonga,M-Jacobsen,O (1981) ICCF 2006}) 5... Be7 6. Nc3 O-O 7. Be2 d5 8. a3 a5 9. b5 c5 10. Nb3 a4 11. Nc1 d4 12. exd4 cxd4 13. Nb1 Qb6 14. O-O Rd8 15. d3 Qxb5 16. Bxd4 { Wilshusen,H (1359)-Glembek,B (2176) ICCF 2019 0-1}) (4... g6 5. d4 Bg7 6. dxe5 Nfd7 7. Be2 O-O 8. O-O Nxe5 9. Nxe5 dxe5 10. c4 Bf5 11. Nc3 Nd7 12. e4 Be6 13. a4 c6 14. a5 Re8 15. Qa4 Rc8 16. Qc2 {Hoch,H (2210)-Wemhöner,W (1946) ICCF 2006 1/2 (39)}) 5. Be2 Nc6 (5... O-O 6. O-O Bg4 (6... e4 7. Nd4 c5 8. bxc5 dxc5 9. Nb3 Nc6 10. f3 Be6 11. fxe4 Nxe4 12. Bf3 f5 13. d3 Ng5 14. Bxc6 bxc6 15. N1d2 Qc7 16. Kh1 Rab8 17. Qe1 Bd6 18. Qh4 {Morley,P (2241)-Shabaev,V ICCF 2008 1-0 (44)}) 7. c4 Nbd7 (7... Nc6 8. b5 Nb8 9. d4 e4 10. Nfd2 Bxe2 11. Qxe2 Re8 12. Nc3 Bf8 13. f3 exf3 14. Qxf3 c6 15. bxc6 Nxc6 16. Nd5 Re6 17. Ne4 Be7 18. Ng5 Qf8 19. Qh3 {Bedbur,H (1879)-Che,T (1580) ICCF 2016 1-0}) 8. Nc3 c6 9. h3 Be6 10. d4 e4 11. Nd2 d5 12. b5 Ne8 13. Rb1 f5 14. Qb3 Nc7 15. bxc6 bxc6 16. Ba3 Rf6 17. Bxe7 {Hoch,H-Ott,P ICCF 2006 1-0 (51)}) 6. b5 Nb4 7. O-O O-O 8. a3 {1-0 (8) Neumann,F (1516)-Fodor,C (1584) ICCF 2020}) (3. b5 c6 (3... Nf6 4. e3 (4. g3 g6 5. Bg2 Bg7 6. d4 O-O 7. c4 e4 8. d5 Re8 9. Qc1 Nbd7 10. Nh3 Nc5 11. O-O a6 12. bxa6 bxa6 13. Nc3 Bf5 14. Kh1 Qd7 15. Ng1 h5 {Anufriev,M-Grenier,M ICCF 2013 1-0 (28)}) (4. a4 Nbd7 5. c4 g6 6. e3 a6 7. Be2 Bg7 8. d4 exd4 9. Bxd4 c5 10. Bb2 axb5 11. axb5 Rxa1 12. Bxa1 O-O 13. Nf3 Nb6 14. O-O Bf5 15. Nc3 Qe7 {Muliuolis,V (1933)-Paxton,W ICCF 2020 1/2}) 4... a6 (4... Be7 5. c4 O-O 6. h3 b6 7. Ne2 Nbd7 8. d4 Bb7 9. Nd2 a6 10. Ng3 {1-0 (10) Tago,S-Popov,L ICCF 2008}) 5. bxa6 (5. a4 c6 6. c4 axb5 7. axb5 Rxa1 8. Bxa1 cxb5 9. cxb5 Be7 10. Nf3 O-O 11. Be2 Be6 12. O-O Nbd7 13. Nc3 d5 14. Bb2 Bd6 15. Qa1 h6 16. Ba3 Nb6 {Ilzig,G (2103)-Tieken,F (2195) ICCF 2016 1/2 (25)}) 5... bxa6 6. c4 Be6 7. d4 e4 8. Qb3 Be7 9. Bc3 Nc6 10. Qb7 Na5 11. Bxa5 Rb8 12. Qc6+ Bd7 13. Qxa6 Bc8 14. Qc6+ Bd7 15. Qxc7 {Tago,S-Magill,R ICCF 2008 1-0 (44)}) (3... Be6 4. Nf3 (4. e4 Nf6 5. Nc3 Be7 6. Nf3 h6 7. d4 exd4 8. Nxd4 Bd7 9. a4 c5 10. Nb3 b6 11. Bc4 Be6 12. Qe2 Bxc4 13. Qxc4 Nbd7 14. O-O-O Ne5 15. Qf1 Qc7 {Ott,P (1595)-Jakobi,W (1544) ICCF 2018 1-0 (45)}) 4... Nf6 5. g3 Be7 6. Bg2 O-O 7. d3 h6 8. Nbd2 Qd7 9. c4 c6 10. a4 Bh3 11. O-O Bxg2 12. Kxg2 c5 13. Ne1 b6 14. Nc2 Qb7+ 15. e4 { Fernández Fornés,J (2243)-Pereyra,D ICCF 2015 1-0 (28)}) (3... f5 4. a4 Nf6 5. e3 Be6 6. Be2 Nbd7 7. Nf3 g6 8. O-O Bg7 9. d4 Ne4 10. d5 Bf7 11. c4 O-O 12. Nbd2 Ndc5 13. Nxe4 Nxe4 14. Nd2 Nc5 15. Rb1 {Flewelling,H-Siegfried,W ICCF 2012 1/2 (49)}) 4. c4 Be6 (4... g6 5. e3 c5 6. Nc3 Nf6 7. Nf3 Bg7 8. d3 a6 9. a4 Be6 10. Be2 Nbd7 11. Ng5 Qe7 12. O-O O-O 13. Nxe6 Qxe6 14. Bf3 Rab8 15. Qc2 Ng4 16. h3 {Meara,P (1624)-Broadbent,A ICCF 2017 1-0 (36)}) 5. e3 Nd7 6. Nc3 Ne7 7. Nf3 g6 8. Be2 Bg7 9. d4 O-O 10. O-O Nb6 11. Qb3 cxb5 12. Nxb5 a6 13. Na3 Rc8 14. dxe5 d5 {Meara,P (1684)-Cassell,R ICCF 2016 1/2 (60)}) (3. d4 Nc6 (3... d5 4. dxe5 Bxb4+ 5. Nd2 Ne7 6. c3 Ba5 7. Nb3 c6 8. Nf3 Ng6 9. Nxa5 Qxa5 10. e3 Bg4 11. Qd4 Bxf3 12. gxf3 O-O 13. h4 Rd8 14. f4 h6 15. h5 {Ling,A (2062) -Aymard,M (2010) ICCF 2006 1-0 (81)}) (3... exd4 4. Bxd4 Nf6 5. b5 Be7 6. Nf3 O-O 7. e3 Bg4 8. Be2 d5 9. Nbd2 c6 10. a4 Nbd7 11. h3 Bf5 12. O-O Ne4 13. Nxe4 Bxe4 14. Nd2 Bg6 15. Nf3 {Balañá Romero,R (1868)-Ciruelos Clerencia,J (1838) ICCF 2016 1/2 (25)}) 4. dxe5 dxe5 5. Qxd8+ Nxd8 6. a3 f6 7. e4 b6 8. Bc4 Bb7 9. Nc3 Ne7 10. Nb5 Bxe4 11. f3 Bxc2 12. Nxc7+ Kd7 13. Nxa8 Ndc6 14. Rc1 Ba4 { Jamieson,I-Armstrong,J (1661) ICCF 2008 1-0 (33)}) (3. g3 f5 4. e3 Nf6 5. Bg2 Be7 6. Ne2 O-O 7. O-O c6 8. d4 e4 9. Nd2 d5 10. a3 Be6 11. Nf4 Bf7 12. Rc1 a5 13. c3 Nbd7 14. Nb3 axb4 {Araboga,M-Bebchuk,L (2329) ICCF 2006 0-1 (32)}) 3... f5 (3... Nf6 4. e3 (4. Nf3 e4 (4... Be7 5. a3 Bg4 6. h3 Be6 7. e3 c5 8. b5 Ne4 9. d3 Qa5+ 10. Nbd2 h5 11. dxe4 a6 12. a4 O-O 13. Be2 Qb4 14. Ba3 Qa5 15. O-O Nd7 16. Qc2 {Odermatt,C-Mazzonna,R (1557) ICCF 2013 1-0 (39)}) 5. Nd4 c5 (5... Be7 6. g3 O-O 7. Bg2 Nc6 8. Nxc6 bxc6 9. Qa4 Rb8 10. a3 Be6 11. Nc3 a5 12. Nxe4 Nxe4 13. Bxe4 d5 14. cxd5 cxd5 15. Bg2 axb4 16. axb4 Rxb4 17. Qc2 {Gierth,K (2200)-Silva Lopes,J (2073) ICCF 2010 1/2 (34)}) 6. bxc5 dxc5 7. Nc2 Bd6 8. Nc3 Be5 9. g3 Nc6 10. Bg2 O-O 11. Rb1 Bf5 12. Ne3 Bg6 13. O-O Re8 14. Re1 Nd4 15. Ba1 b6 {Frydendal,O (1834)-Wicklund-Hansen,G (2039) ICCF 2011 1-0 (46)}) (4. Nc3 Be6 (4... Be7 5. Nf3 O-O 6. Qc2 a5 7. b5 Nbd7 8. e3 g6 9. d3 Nc5 10. Rd1 Bf5 11. Be2 Re8 12. O-O a4 13. Nh4 Bd7 14. Ba3 Bf8 15. Rfe1 c6 16. Bxc5 { Martinson,R (2086)-Palladino,M (2050) ICCF 2009 1/2 (31)}) 5. e3 c6 6. Nf3 Be7 7. Be2 O-O 8. O-O h6 9. Qc2 (9. a4 Nbd7 10. Ba3 d5 11. cxd5 Nxd5 12. Nxd5 Bxd5 13. b5 Bxa3 14. Rxa3 c5 15. Qc2 e4 16. Ne1 Qe7 17. Rc3 b6 18. Qb2 f5 19. d3 Rac8 20. dxe4 fxe4 {Neumann,F (1522)-Schenker,L (1282) ICCF 2020 0-1 (35)}) 9... Nbd7 10. d4 exd4 11. Nxd4 Nb6 12. Nxe6 fxe6 13. Rfd1 Qe8 14. Rac1 d5 15. c5 Nbd7 {Rånby,H (1859)-Grönroos,J (1859) ICCF 2017 1-0 (26)}) (4. g3 Be6 (4... Be7 5. Bg2 O-O 6. Nc3 (6. Nf3 c6 7. O-O Qb6 8. Qb3 e4 9. Nd4 d5 10. c5 Qc7 11. a3 Re8 12. Nc3 a5 13. Na4 Nbd7 14. Rfc1 Bf8 15. h3 axb4 16. axb4 g6 17. Rcb1 Bh6 {Degterev,P (2346)-Bachmann,W (2440) ICCF 2006 1-0 (41)}) 6... c6 7. e4 Be6 8. d3 d5 9. exd5 cxd5 10. a3 Nc6 11. cxd5 Nxd5 12. Nge2 Nxc3 13. Nxc3 a5 14. b5 Nd4 15. O-O Qd7 16. Rb1 {Cottarelli,F (1897)-Juárez de Vena,A (1893) ICCF 2012 0-1 (27)}) 5. Bg2 Nbd7 6. d3 d5 7. a3 c6 8. Nf3 dxc4 9. dxc4 Bxc4 10. Nbd2 Bd5 11. O-O Bd6 12. Nc4 Bc7 13. Nfxe5 Nxe5 14. Nxe5 O-O 15. Bxd5 Qxd5 {Benassi,A (2293)-Wicklund-Hansen,G (1929) ICCF 2012 1/2}) (4. b5 Nbd7 (4... a6 5. a4 Be7 6. e3 O-O 7. Nc3 c5 8. Nf3 Bf5 9. d3 Qa5 10. Nd2 Qb6 11. Be2 Nc6 12. O-O axb5 13. axb5 Rxa1 14. Bxa1 Nb4 15. Nce4 Nxe4 16. dxe4 {Schmidt,K (2125)-Brito,A (1926) ICCF 2010 1-0 (48)}) (4... Be7 5. g3 O-O 6. Bg2 c6 7. a4 Be6 8. d3 a6 9. bxc6 Nxc6 10. Nh3 Qd7 11. Ng5 h6 12. Nxe6 fxe6 13. Nd2 d5 14. cxd5 exd5 15. O-O Rac8 16. Qb3 {Gradisar,M (1806)-Gorsek,G (1928) ICCF 2006 1-0 (27)}) 5. e3 Be7 6. Nc3 O-O 7. Bd3 Nc5 8. Bc2 e4 9. d4 exd3 10. Bxd3 Be6 11. Nf3 a6 12. a4 Qd7 13. O-O axb5 14. axb5 Rxa1 15. Bxa1 Ra8 {Meara,P (1708)-Gibbs,P (2149) ICCF 2015 1/2 (40)}) 4... Be7 (4... g6 5. Nf3 (5. g3 Bg7 6. Bg2 O-O 7. Ne2 c6 8. O-O Be6 9. d3 Nbd7 10. Nbc3 Qc7 11. a4 a6 12. Rb1 Rab8 13. f4 b5 14. cxb5 axb5 15. axb5 cxb5 16. Qd2 Qb6 {Bedbur,H (1879)-Johansson,K (1813) ICCF 2016 1-0 (25)}) (5. Nc3 Bg7 6. Be2 O-O 7. h4 a5 8. b5 Re8 9. d3 Nbd7 10. h5 Nc5 11. hxg6 hxg6 12. e4 c6 13. Nf3 d5 14. Qc2 Ne6 15. O-O-O d4 16. Na4 cxb5 {Wilshusen,H (1799) -Thew,B (2244) ICCF 2010 0-1}) 5... a5 (5... Bg4 6. Nc3 Bg7 7. h3 Bxf3 8. Qxf3 c6 9. g4 O-O 10. g5 Nh5 11. h4 f6 12. Qg2 Na6 13. Ba3 f5 14. Be2 f4 15. b5 e4 16. bxa6 f3 17. Qg4 {Rook,I (2101)-Dolan,R ICCF 2014 1-0 (35)}) 6. b5 Bg7 7. Be2 Nbd7 8. Nc3 O-O 9. O-O Re8 10. Ng5 Nc5 11. d3 Bf5 12. e4 Bc8 13. Bc1 h6 14. Nf3 Nh5 15. Rb1 Nf4 16. Bxf4 {Baumann,W (2013)-Balshaw,A (2079) ICCF 2009 1/2}) (4... Nbd7 5. Nf3 (5. d4 Qe7 6. d5 c6 7. Nc3 e4 8. Nge2 cxd5 9. Nxd5 Nxd5 10. Qxd5 a5 11. b5 Nb6 12. Qd4 Na4 13. Ba3 Qe5 14. O-O-O Bd7 15. f4 exf3 16. gxf3 Rc8 {Flewelling,H (1843)-Krongraf,H ICCF 2014 0-1}) 5... Be7 (5... b6 6. d4 e4 7. Nfd2 Bb7 8. d5 c6 9. dxc6 Bxc6 10. Qc2 Be7 11. Nc3 Bb7 12. Ndxe4 Rc8 13. Nxf6+ Nxf6 14. f3 O-O 15. a3 d5 16. Qb3 dxc4 17. Bxc4 {Flewelling,H-Bilbao,J ICCF 2013 1-0}) (5... g6 6. Be2 (6. Nc3 Bg7 7. Qc2 O-O 8. Be2 a5 9. a3 Qe7 10. O-O e4 11. Nd4 c5 12. Ndb5 axb4 13. axb4 Rxa1 14. Rxa1 cxb4 15. Nd5 Nxd5 16. cxd5 Nc5 17. Bxg7 Kxg7 {Meara,P (1684)-Brotherton,T (2004) ICCF 2016 0-1 (47)}) 6... Bg7 7. Nc3 O-O 8. O-O c6 9. b5 Re8 10. Qc2 Nf8 11. h3 Bf5 12. e4 Bd7 13. a4 c5 14. Nd5 Ne6 15. d3 Nxd5 16. exd5 Nd4 17. Nxd4 {Meara,P-Guy,D (1733) ICCF 2014 0-1 (36)}) 6. Be2 a5 7. b5 c6 8. a4 O-O 9. Nc3 c5 10. d3 b6 11. Qc2 Bb7 12. O-O-O Rc8 13. h3 Re8 14. Rhg1 Bf8 15. g4 e4 16. Ng5 {Frydendal,O (1603) -Løvås,R (1661) ICCF 2015 1-0 (49)}) (4... c6 5. Nf3 Bg4 6. Be2 e4 7. Nd4 Bxe2 8. Qxe2 Qd7 9. O-O Be7 10. f3 c5 11. bxc5 dxc5 12. Nb3 exf3 13. Qxf3 Nc6 14. Qg3 O-O-O 15. Qxg7 Rhg8 16. Nxc5 {Klein,M (1981)-Alves,T (1727) ICCF 2012 1-0 (54)}) (4... Bf5 5. Nf3 Be7 6. Be2 O-O 7. d4 Nbd7 8. O-O c6 9. Nc3 h6 10. h3 Re8 11. Re1 Qc7 12. Qb3 exd4 13. Nxd4 Bh7 14. a3 Bf8 15. Nf3 a5 16. Na4 { Semenov,V (2250)-Gach,A (2256) ICCF 2010 1/2 (65)}) (4... Ne4 5. d3 Nxf2 6. Kxf2 Qh4+ 7. g3 Qf6+ 8. Qf3 Qg6 9. Be2 Nc6 10. a3 Rb8 11. Nc3 Be7 12. Nd5 Bd8 13. Kg2 Ne7 14. Nxe7 Bxe7 15. Nh3 b6 16. Rhf1 {Hohenberger,K (1901)-Osak,J (1925) ICCF 2014 0-1 (34)}) (4... Bd7 5. Nc3 c6 6. d4 Be7 7. dxe5 dxe5 8. a3 O-O 9. Qc2 Qc7 10. Bd3 g6 11. Nge2 Ng4 12. h3 Nh6 13. O-O f5 14. c5 Be6 15. Nd1 b5 16. cxb6 {Foreman,A (1713)-Gosling,D (1375) ICCF 2018 1-0 (36)}) (4... d5 5. cxd5 Bxb4 6. Bxe5 O-O 7. Qb3 Ba5 8. Bc3 Bb6 9. Bc4 a5 10. d3 Nbd7 11. d4 c6 12. dxc6 bxc6 13. Nf3 Ba6 14. Bxa6 Rxa6 15. O-O Ra8 16. Nbd2 {Bedbur,H (1839) -Johansson,K (1803) ICCF 2014 1-0 (26)}) 5. Nc3 (5. Nf3 O-O (5... e4 6. Nd4 c5 (6... O-O 7. Nc3 c5 8. Nc2 Nc6 9. b5 Bg4 10. Qb1 Ne5 11. Na3 Bh5 12. Qc2 Qd7 13. h3 Rad8 14. Rc1 h6 15. Nd5 Nxd5 16. cxd5 Qf5 17. Bxe5 Qxe5 18. Qc4 { Ziemak,K-Belanoff,S (2214) ICCF 2017 0-1 (47)}) 7. Nc2 Nc6 8. b5 Ne5 9. Bxe5 dxe5 10. Nc3 Bf5 11. Be2 Qd7 12. Na3 O-O 13. Qc2 Rfd8 14. O-O-O a6 15. h3 h6 16. g4 Bg6 17. h4 {Spierings,J-Cherner,L (1829) ICCF 2005 1-0 (40)}) (5... b6 6. Be2 O-O 7. O-O Bb7 8. d4 exd4 9. exd4 d5 10. c5 a5 11. a3 axb4 12. axb4 Rxa1 13. Bxa1 c6 14. Qa4 b5 15. Qc2 Nbd7 16. Nc3 Ne8 17. Bd3 {Ramos Mora,J (1813) -Igdir,G (1936) ICCF 2016 1-0}) 6. d4 e4 7. Nfd2 c6 (7... d5 8. c5 c6 9. Nc3 Bg4 10. Be2 Qd7 11. h3 Bxe2 12. Qxe2 Na6 13. b5 Nb4 14. O-O a6 15. bxc6 Qxc6 16. Rab1 b6 17. cxb6 Qxb6 18. Ba3 Qa5 19. Bxb4 {Yeung,C (1664)-Lung,S (1808) ICCF 2011 1-0 (80)}) 8. Be2 Bf5 9. Nc3 Nbd7 10. Qb3 Re8 11. a4 Bf8 12. O-O Qc7 13. Rac1 a6 14. Rfd1 c5 15. Nd5 Qb8 16. Nf1 Nxd5 {Boer,J-Kerssemakers,H (1985) ICCF 2013 0-1 (33)}) (5. Qc2 Bg4 6. Be2 O-O 7. Bxg4 Nxg4 8. Nf3 Nc6 9. b5 Nb8 10. O-O Nd7 11. a4 Nc5 12. d4 e4 13. Ne1 Nd7 14. Qxe4 Ndf6 15. Qxb7 a5 16. Qf3 c5 {Fagerbekk,E (2302)-García Sánchez,J (1661) ICCF 2017 1-0 (37)}) (5. Be2 O-O 6. Nf3 (6. Nc3 c6 7. Qc2 d5 8. Nf3 e4 9. Nd4 Bxb4 10. O-O Re8 11. cxd5 cxd5 12. Rab1 a6 13. f3 Bf8 14. fxe4 dxe4 15. Rxf6 Qxf6 16. Rf1 Qg6 17. Bc4 Be6 { Taulien,H (2391)-Hoffmann,F (2381) ICCF 2008 0-1 (31)}) 6... e4 (6... a6 7. Nc3 b6 (7... Nc6 8. a3 Be6 9. Qc2 h6 10. O-O Qd7 11. e4 Bg4 12. Nd5 Bxf3 13. Bxf3 Nd4 14. Bxd4 exd4 15. Rab1 Bd8 16. Qd3 Nxd5 17. cxd5 Bf6 18. Rfc1 g6 19. Be2 { Fels,B (2104)-Flecher,J (1851) ICCF 2010 1-0 (44)}) 8. a3 Bb7 9. d4 Nbd7 10. O-O c6 11. Qc2 h6 12. Rad1 Qc7 13. Nh4 c5 14. Nf5 Bd8 15. dxe5 dxe5 16. b5 a5 17. f4 Re8 18. Nd6 {Jiménez Ariza,J (2401)-Paris Mellado,J (1618) ICCF 2016 1-0 }) (6... Nbd7 7. O-O c6 8. d3 a5 9. a3 Re8 10. Nbd2 axb4 11. axb4 Rxa1 12. Qxa1 Qc7 13. Qa7 h6 14. Ra1 Bd8 15. h3 {1-0 (15) Petters Merino,O (1924)-Ivanov,H (2187) ICCF 2012}) 7. Nd4 d5 8. a3 dxc4 9. Bxc4 a5 10. b5 c5 11. Ne2 Nbd7 12. Ng3 Nb6 13. Be2 Re8 14. Qc2 Bd6 15. d3 exd3 16. Bxd3 c4 {Cottarelli,F (2185) -Gavrijski,D (2010) ICCF 2006 1/2 (43)}) 5... O-O 6. Nf3 (6. Qc2 Qd7 7. h3 Qf5 8. Bd3 Qg5 9. Nf3 Qh6 10. Be2 Re8 11. Nh2 c6 12. b5 Be6 13. Ne4 Nxe4 14. Qxe4 f5 15. Qc2 cxb5 16. cxb5 Nd7 17. Rc1 Nb6 {Bes,R (1844)-Rotte,P (1780) ICCF 2020 1-0}) (6. d3 d5 7. cxd5 Bxb4 8. a3 Ba5 9. e4 c6 10. dxc6 Nxc6 11. Be2 Qb6 12. Qc2 Nd4 13. Qb1 Qc5 14. Kf1 Bxc3 15. Qc1 Nxe2 16. Nxe2 Ng4 17. d4 exd4 { Wilshusen,H (1393)-Lixa,A (1781) ICCF 2019 0-1}) 6... c6 (6... Na6 7. a3 Bf5 8. d4 e4 9. Nd2 c6 10. h3 d5 11. Be2 Nc7 12. Nb3 dxc4 13. Bxc4 Ncd5 14. Nd2 Nxc3 15. Bxc3 Nd5 16. Bb2 Bd6 17. Qb3 Bc7 18. Bxd5 {Jean,L-Beck,G (1972) ICCF 2013 0-1 (34)}) (6... c5 7. bxc5 dxc5 8. Nxe5 Re8 9. Be2 Bf8 10. f4 b6 11. Bf3 Bg4 12. Nxg4 {1-0 (12) Fagerbekk,E (2193)-Løvås,R (1706) ICCF 2013}) (6... Re8 7. b5 a6 8. a4 axb5 9. axb5 Rxa1 10. Bxa1 Nbd7 11. d4 exd4 12. Nxd4 d5 13. cxd5 Bb4 14. Qc2 Nxd5 15. Bd3 Bxc3+ 16. Bxc3 Nxc3 17. Qxc3 b6 18. Bf5 {Schmidt,K (2151)-Ferre Pérez,A (2161) ICCF 2017 1/2}) (6... e4 7. Ng5 Bf5 8. Qc2 d5 9. cxd5 Nxd5 10. Ngxe4 Nxb4 11. Nf6+ Bxf6 12. Qxf5 N8c6 13. Be2 Ne7 14. Qb1 c5 15. a3 Nbd5 16. O-O Qd7 17. Rd1 Rad8 18. Bf3 {Skerlík,S (2352)-Trubetskoi,R (2340) ICCF 2007 1/2 (38)}) 7. Qc2 (7. Be2 Bf5 (7... Nbd7 8. d4 e4 9. Nd2 d5 10. a3 Re8 (10... a5 11. b5 cxb5 12. cxd5 b4 13. Ncxe4 Nxd5 14. axb4 Bxb4 15. Ba3 N7f6 16. Bxb4 Nxb4 17. O-O Nxe4 18. Nxe4 b6 19. Nc3 Bb7 20. e4 Rc8 21. Qd2 Qh4 22. Rfe1 {Mosshammer,M-Pooley,M (1889) ICCF 2006 1/2 (30)}) 11. O-O Nf8 12. b5 Bd6 13. a4 Ng6 14. Ba3 Bb8 15. Re1 Qc7 16. g3 Qd7 17. Rb1 a6 18. bxa6 bxa6 19. a5 { Kazmierczuk,Z (2048)-Ramos Mora,J (1964) ICCF 2013 1-0 (30)}) 8. O-O Nbd7 9. a4 (9. a3 a5 10. d4 Qc7 11. b5 Nb6 12. bxc6 bxc6 13. dxe5 dxe5 14. Nxe5 Qxe5 15. Nd5 Qe6 16. Nxb6 Rad8 17. Qe1 Rb8 18. Qxa5 c5 19. Bxf6 Bxf6 20. Nd5 Bxa1 { Cottarelli,F (2106)-Gavrijski,D (2173) ICCF 2008 0-1 (50)}) 9... a5 10. b5 Qc7 11. d4 h6 12. h3 Rfe8 13. Qb3 exd4 14. exd4 Rac8 15. Rfe1 Bh7 16. Rad1 Bf8 17. Bf1 g5 18. Ba3 c5 {Fels,B (2162)-Hechl,G (2175) ICCF 2009 0-1 (57)}) (7. a3 e4 (7... h6 8. d4 exd4 9. Nxd4 c5 10. Nf3 Nc6 11. bxc5 dxc5 12. Qc2 Be6 13. Rd1 Qa5 14. Bd3 Rad8 15. O-O Rfe8 16. h3 Qc7 17. Rfe1 Qc8 18. Ne2 Nd7 19. Nf4 { Hering,H (2193)-Beckett,P (2043) ICCF 2012 1-0 (40)}) 8. Nd4 c5 (8... Re8 9. d3 c5 10. Nb3 exd3 11. bxc5 dxc5 12. Bxd3 Bg4 13. f3 Be6 14. Qc2 Nc6 15. Rd1 Qb6 16. Ne2 Qc7 17. O-O Ne5 18. Nf4 Nxd3 19. Nxe6 fxe6 20. Rxd3 {Fagerbekk,E (2215) -Pohjosmäki,R (2256) ICCF 2013 1/2 (26)}) (8... Na6 9. Qc2 c5 10. bxc5 dxc5 11. Nde2 Re8 12. Ng3 Nc7 13. Ncxe4 Nxe4 14. Nxe4 Bf5 15. Bd3 Bg6 16. h4 h5 17. g4 hxg4 18. O-O-O Bxe4 19. Bxe4 Bf6 20. h5 {Böhnke,H (2164)-Jaeger,F (2194) ICCF 2005 1/2 (60)}) 9. bxc5 (9. Nb3 Nc6 10. Qb1 cxb4 11. axb4 Nxb4 12. Nxe4 d5 13. cxd5 Re8 14. Nxf6+ Bxf6 15. Bd4 b6 16. Bc4 Bb7 17. O-O Bxd5 18. Bxf6 Qxf6 19. Bxd5 Nxd5 20. Rc1 a5 {Fels,B (2162)-Moeckel,J (1870) ICCF 2009 1/2 (27)}) 9... dxc5 10. Nde2 Bd6 11. Ng3 Bxg3 12. hxg3 Bg4 13. f3 Be6 14. Qc2 Bf5 15. Be2 Qd6 16. f4 h6 17. Rh4 Nc6 18. O-O-O Ne7 {Müller,D (2309)-Jarmuz,F (2042) ICCF 2017 1-0 (30)}) 7... Bg4 8. Be2 Nbd7 (8... a5 9. b5 Nbd7 10. bxc6 bxc6 11. O-O Bh5 12. Nh4 Bxe2 13. Nxe2 g6 14. Nf3 e4 15. Nfd4 Ne5 16. Rab1 Qd7 17. Nb3 Nd3 18. Bxf6 Bxf6 19. Nbc1 Nxc1 20. Rfxc1 {Walker,J (1771)-Graham,O (2033) ICCF 2016 1/ 2 (31)}) 9. h3 Bh5 10. O-O Qb6 11. a3 a5 12. Na4 Qc7 13. d3 h6 14. e4 Rfe8 15. Rfe1 {Skerlík,S (2300)-Weiss,L (2023) ICCF 2012 1-0 (59)}) (3... Be6 4. e3 Nd7 (4... Nf6 5. a3 (5. Nf3 h6 6. d4 e4 7. d5 Bg4 8. h3 Bxf3 9. gxf3 exf3 10. Nd2 Nbd7 11. h4 Ne5 12. Nxf3 Nxf3+ 13. Qxf3 Be7 14. O-O-O Qd7 15. Rg1 Kf8 16. Qg2 g6 {Howell,B-Harding,M ICCF 2017 1-0}) (5. Qc2 Nbd7 6. Nf3 h6 7. Nc3 d5 8. cxd5 Bxd5 9. a3 c5 10. bxc5 Bxc5 11. Nxd5 Nxd5 12. Nxe5 Bd6 13. Nxd7 Qxd7 14. Qb3 Bf8 15. Bb5 {1-0 (15) Thomsen,J (1531)-Fanelli,F (1518) ICCF 2018}) (5. Be2 Be7 6. Nf3 h6 7. O-O Nbd7 8. d4 e4 9. Nfd2 d5 10. a3 c6 11. Nc3 Qc7 12. Rc1 Qd6 13. cxd5 Bxd5 14. Nxd5 Qxd5 15. Bc4 Qg5 16. Qc2 Bd6 {Jean,L-Alves,T (1721) ICCF 2014 1-0 (39)}) 5... Be7 6. Nc3 a6 7. Nf3 h6 8. Be2 Nbd7 9. O-O O-O 10. d4 exd4 11. exd4 Nb6 12. d5 Bg4 13. h3 Bxf3 14. gxf3 Nh5 15. Kh2 f5 16. Na4 {Rouse, L-Jakobi,W (1599) ICCF 2020 0-1 (63)}) (4... Be7 5. g3 Nf6 6. Bg2 c6 7. Qb3 O-O 8. Ne2 Qc7 9. O-O a5 10. a3 axb4 11. d3 bxa3 12. Nxa3 Nbd7 13. Rab1 Rfb8 14. f4 Nc5 15. Qd1 Ng4 16. Nc2 {Slupski,M-Tibbert,P (1748) ICCF 2011 0-1 (30)}) 5. Nc3 (5. Nf3 h6 6. d4 Be7 7. a4 Ngf6 8. Be2 e4 9. Nfd2 Bf5 10. b5 Bg6 11. Nc3 O-O 12. Qc2 b6 13. Ncxe4 Nxe4 14. Nxe4 Nf6 15. Nxf6+ Bxf6 16. Bd3 Bxd3 {Frydendal, O (1618)-Lamy,O ICCF 2015 1-0 (37)}) 5... f5 (5... Ngf6 6. Nf3 Be7 7. Be2 O-O 8. O-O Ng4 9. Qc2 f5 10. h3 Nh6 11. Nd5 Bxd5 12. cxd5 e4 13. Nd4 Rf7 14. Ne6 Qc8 {0-1 (14) Piriyev,M-Vera-Cruz,R (1887) ICCF 2012}) 6. Nf3 Ngf6 7. d3 Be7 8. Be2 O-O 9. Ng5 Bf7 10. O-O c6 11. Nxf7 Rxf7 12. h3 d5 13. cxd5 cxd5 14. Qb3 Nf8 15. d4 {Walker,J (1778)-Rehman,C ICCF 2017 1-0}) (3... Bf5 4. Nc3 (4. d3 Nf6 5. Nf3 Be7 6. e4 Bg4 7. Be2 O-O 8. h3 Be6 9. O-O Nbd7 {Degterev,P (2419)-Gonzales, A (1665) ICCF 2013}) (4. e3 Nd7 5. Nf3 Ngf6 6. Be2 Be7 7. d3 O-O 8. O-O h6 9. Nc3 a5 10. a3 c6 11. e4 Bh7 12. Qb3 Qb8 13. Rfe1 Re8 14. Nd1 Nf8 15. Ne3 Ne6 { Orban,C-Cordy,J ICCF 2009 1-0 (46)}) 4... c6 5. e4 Be6 6. Nf3 h6 7. d4 Nf6 8. Bd3 Be7 9. a3 O-O 10. dxe5 dxe5 11. Nxe5 Nbd7 12. Nxd7 Bxd7 13. e5 Nh7 14. O-O Qc8 15. Ne4 {Dijk,J (1724)-Kreveld,F (1307) ICCF 2018 1-0}) (3... g6 4. d4 (4. Nf3 Bg7 5. e3 Ne7 6. Be2 O-O 7. Nc3 Nd7 8. O-O f5 9. Qb3 Kh8 10. Ng5 Nf6 11. d4 exd4 12. exd4 Nc6 13. Rad1 Bd7 14. d5 Ne5 15. f4 Nf7 {Fagerbekk,E (2193) -Wicklund-Hansen,G (1917) ICCF 2013 1-0 (26)}) 4... Nd7 5. Nf3 Bg7 6. dxe5 Nh6 7. Nc3 Nxe5 8. Nxe5 Bxe5 9. g3 O-O 10. Bg2 Be6 11. Qd2 Nf5 12. e4 Ne7 13. Nd5 Bxb2 14. Qxb2 Nc6 15. O-O {Waud,D (1934)-Conway,J (1520) ICCF 2020 1-0 (33)}) ( 3... a6 4. e3 Nf6 5. Nf3 Nc6 6. a3 Be6 7. Be2 Be7 8. d4 exd4 9. exd4 Bf5 10. d5 Na7 11. O-O O-O 12. Nd4 Bg6 13. f4 Nd7 14. f5 c5 15. dxc6 {Kural,A (2138) -Balkanci,G (1837) ICCF 2009 1-0}) 4. e3 (4. Nc3 Nf6 5. e3 Be7 (5... g6 6. Nf3 Bg7 7. c5 e4 8. Nd4 Nc6 9. Nxc6 bxc6 10. b5 Bd7 11. cxd6 cxd6 12. Ba3 c5 13. Qb3 Ng4 14. Bb2 Qh4 15. Nxe4 fxe4 16. Bxg7 Qxf2+ 17. Kd1 {Petters Merino,O (1897)-Arditi Rocha,L (2079) ICCF 2012 1-0 (26)}) 6. Nf3 (6. Be2 O-O 7. b5 (7. a3 a5 8. b5 Qe8 9. Nf3 Nbd7 10. O-O e4 11. Nd4 Nc5 12. Qc2 Qg6 13. a4 Bd7 14. Rab1 Kh8 15. f3 Rae8 16. f4 Bd8 17. Nd5 Qf7 18. Rfd1 b6 {Fagerbekk,E (2193) -Torgersen,T (1927) ICCF 2013 1/2 (51)}) 7... Be6 8. Nf3 h6 9. d4 e4 10. Nd2 Kh8 11. Qc2 c6 12. a4 d5 13. c5 Nbd7 14. Qb3 Rb8 15. a5 Bg8 16. Qc2 Bh7 17. a6 Qc8 {Thau,O (1739)-Badger,J (1732) ICCF 2020 1-0 (28)}) 6... O-O (6... e4 7. Nd4 c5 8. bxc5 dxc5 9. Nde2 O-O 10. d4 exd3 11. Nf4 Bd6 12. Nxd3 Nc6 13. Be2 Be6 14. Qa4 Na5 15. Nc1 a6 16. O-O Ng4 17. g3 Ne5 18. Nd5 {Frydendal,O (1913) -Torgersen,T (2067) ICCF 2009 0-1}) 7. Qb3 Be6 (7... e4 8. Ng5 h6 9. Nh3 g5 10. f4 g4 11. Nf2 c6 12. d3 a5 13. b5 cxb5 14. cxb5+ d5 15. dxe4 a4 16. Nxa4 fxe4 17. Nc3 Kh7 18. Rd1 Bf5 19. Be2 {Szabo,A (2304)-Craciun,G (1993) ICCF 2005 1-0 (38)}) (7... Kh8 8. Be2 c6 9. d4 e4 10. Ng5 d5 11. h4 Na6 12. b5 Nc7 13. O-O f4 14. cxd5 cxd5 15. Na4 h6 16. b6 axb6 17. Nxb6 hxg5 18. Nxa8 f3 19. gxf3 { Böhnke,H (2136)-Larsen,J (2058) ICCF 2008 0-1 (42)}) 8. d4 e4 9. Ng5 Bf7 10. Be2 Qd7 11. Nxf7 Rxf7 12. b5 a6 13. c5 d5 14. bxa6 bxa6 15. Qb7 Qc6 { Daatselaar,J (2200)-Sommeling,G (1686) ICCF 2020 1-0 (40)}) (4. g3 Nf6 5. Bg2 Be7 6. Nc3 (6. Nh3 O-O 7. O-O c6 8. d4 Ng4 9. Nd2 Be6 10. b5 e4 11. Qb3 d5 12. c5 Bf7 13. f3 Nh6 14. a4 Nd7 15. Rab1 Bf6 16. Qc2 Rc8 17. Nb3 b6 {Degterev,P (2475)-Avotins,M (2495) ICCF 2009 1/2 (35)}) 6... O-O 7. d3 a5 8. b5 Nbd7 9. Na4 Qe8 10. Nh3 Nb6 {1/2 (10) Böhnke,H (2136)-Gachon,L (2281) ICCF 2008}) 4... Nf6 5. Nf3 (5. d4 exd4 6. exd4 a5 7. b5 d5 8. a3 Be6 9. c5 Nbd7 10. Nh3 Bf7 11. Qe2+ Be7 12. Qc2 b6 13. c6 Nf8 14. Qxf5 Bd6 15. Ng5 Qe7+ 16. Be2 Bg6 { Wantoch-Rekowski,J (2246)-Ott,P (2205) ICCF 2008 1/2 (29)}) (5. Be2 Be7 6. d4 O-O 7. a3 e4 8. Nh3 d5 9. Nc3 c6 10. Qb3 Kh8 11. a4 Be6 12. b5 Nbd7 13. c5 Bg8 14. O-O Nxc5 15. dxc5 d4 16. Bc4 dxc3 {Skerlík,S (2234)-Velde,M (2184) ICCF 2018 1-0 (39)}) 5... Be7 (5... g6 6. d4 (6. Be2 Bg7 7. d4 e4 8. Ng5 Ng4 9. Nxe4 O-O 10. Ng3 c5 11. b5 h5 12. Bf3 Qe7 13. Nc3 cxd4 14. Nd5 Qf7 15. Bxd4 Bxd4 16. Qxd4 h4 17. Bxg4 fxg4 {Skaug,T (2130)-Løvås,R (1683) ICCF 2013 1-0}) 6... e4 7. Nfd2 Bg7 8. Be2 O-O 9. Nc3 c6 (9... Be6 10. O-O Bf7 11. a4 Nbd7 12. a5 c6 13. a6 b6 14. h3 Qe7 15. Rb1 Rfd8 16. Rc1 h5 17. Qa4 Rac8 18. Nb3 Nf8 19. Rc2 f4 20. exf4 Ne6 21. Bc1 {Ringsborg,A (2280)-Mikkelsen,P (2435) ICCF 2020 1/2 (46)} ) 10. a4 Be6 11. b5 Nbd7 12. a5 c5 13. Nb3 Rc8 14. O-O Qe7 15. Qd2 Rfd8 16. Rfd1 Bf7 17. Rab1 {Ilzig,G (2264)-Jensen,K (2238) ICCF 2017 1/2 (62)}) (5... e4 6. Ng5 h6 7. Nh3 g5 8. Nc3 Bg7 9. d4 O-O 10. b5 a6 11. a4 c5 12. Be2 Be6 13. O-O cxd4 14. Qxd4 Nd5 15. Qd2 Bxc3 16. Bxc3 Nxc3 17. Qxc3 {Degterev,P (2545) -Banet,J (2422) ICCF 2007 0-1 (48)}) 6. d4 (6. Be2 O-O 7. O-O e4 8. Nd4 c5 9. bxc5 (9. Nb3 Be6 10. a3 a6 11. Qc2 Nc6 12. d4 exd3 13. Bxd3 cxb4 14. Bxf5 Bxf5 15. Qxf5 Qd7 16. Qd3 Rad8 17. N1d2 d5 18. c5 Ng4 19. axb4 Nxb4 20. Qd4 Bf6 { Jacewicz,G (2208)-Hermes,G (1979) ICCF 2011 1-0}) 9... dxc5 10. Nb3 Nc6 11. Nc3 Be6 12. d3 exd3 13. Qxd3 Qxd3 14. Bxd3 Ne5 15. Be2 Nxc4 16. Bxc4 Bxc4 17. Rac1 Bxf1 {Flewelling,H (1786)-Stigter,J (2242) ICCF 2016 0-1}) 6... e4 7. Nfd2 d5 ( 7... O-O 8. Nc3 (8. b5 a6 9. a4 axb5 10. axb5 Rxa1 11. Bxa1 d5 12. cxd5 Nxd5 { 0-1 (12) Grosse,M (1687)-Recasens Sánchez,J ICCF 2006}) 8... a5 (8... c6 9. Be2 Be6 10. O-O d5 11. Qb3 Nbd7 12. a4 Qe8 13. b5 Qg6 14. f4 Rfc8 15. Ba3 Bd8 16. Rac1 Ng4 17. Bxg4 Qxg4 18. bxc6 bxc6 19. cxd5 Rcb8 20. Qc4 {Labbe,R (2134) -Stibal,G (1877) ICCF 2005 0-1 (67)}) (8... Be6 9. Qb3 c6 10. b5 Nbd7 11. a4 a6 12. Be2 Qe8 13. bxc6 bxc6 14. Ba3 Rb8 15. Qc2 c5 16. O-O cxd4 17. exd4 Qg6 18. Rab1 Nh5 19. Bxh5 Qxh5 20. Rxb8 {Ramos Mora,J (1819)-Padilla López,D (2098) ICCF 2014 1/2 (25)}) 9. b5 Nbd7 (9... c5 10. d5 Nbd7 11. h3 Ne5 12. Na4 Nfd7 13. Be2 Bf6 14. Qc2 b6 15. O-O-O Nf7 16. Rdg1 Bxb2+ 17. Kxb2 Qf6+ 18. Kb1 Rb8 19. Nc3 Qe7 20. g4 Nf6 21. g5 {Muri,H (2405)-Cvetnic,V (2383) ICCF 2008 1-0 (45)}) 10. Be2 Nb6 11. Qc2 Qe8 12. a4 Be6 13. Ba3 Nfd7 14. O-O Qg6 15. Rac1 Qh6 16. Nd5 Bxd5 17. cxd5 Rac8 18. Qb3 Bg5 19. Nc4 {Muri,H (2410)-Copar,A (2461) ICCF 2008 1/2 (35)}) 8. b5 c6 9. a4 O-O (9... Be6 10. Be2 Nbd7 11. Qb3 Qc7 12. Nc3 O-O 13. O-O Rac8 14. Rfc1 Bd6 15. g3 Kh8 16. a5 Bg8 17. a6 Rb8 18. axb7 Rxb7 19. c5 Bxc5 20. dxc5 d4 21. Qa3 {Cooper,R (2038)-Halliday,J (1884) ICCF 2013 1-0 (38)}) 10. Qb3 Be6 11. Nc3 Nbd7 12. Be2 Qe8 (12... Kh8 13. Ba3 c5 14. Nxd5 Nxd5 15. cxd5 Bg8 16. dxc5 Rc8 17. c6 bxc6 18. bxc6 Rxc6 19. Bxe7 Qxe7 20. O-O Rb6 21. Qa2 Nf6 22. Bc4 Rd8 23. Rab1 Rxb1 24. Rxb1 {Muri,H (2355)-Egan,M (2281) ICCF 2012 1/2 (28)}) 13. Ba3 {Kural,A (2001)-Pohjosmäki,R ICCF 2007 1/2 (61)}) (1... d5 2. Bb2 (2. c4 dxc4 3. Bb2 (3. e3 Nc6 4. Bxc4 Nxb4 5. Qa4+ Nc6 6. Nf3 e6 7. Bb2 Bd7 8. Qc2 Nf6 9. O-O Rc8 10. d4 Na5 11. Bd3 Nd5 12. Qe2 Bd6 13. Nc3 O-O 14. Ne5 c6 {Krawczyk,W (2243)-Deforel,J (2059) ICCF 2018 1/2 (51)}) 3... Nf6 4. e3 Nc6 5. Nf3 Nxb4 6. Qa4+ Nc6 7. Bxc4 Bd7 8. Ba3 (8. O-O e6 9. Be2 Bd6 10. Na3 O-O 11. Qc2 Nb4 12. Qb1 c5 13. d4 Bc6 14. dxc5 Bxc5 15. Rc1 b6 16. Nc4 Rc8 17. Rd1 Qe7 18. Ng5 Rfd8 19. Ne5 Be8 {Krawczyk,W (2243)-Brudnak,J (2296) ICCF 2018 0-1 (71)}) 8... e6 9. Bxf8 Rxf8 10. Qc2 Qe7 11. O-O O-O-O 12. Rc1 e5 13. Nc3 e4 {Krawczyk,W (2243)-Tödter,H (2167) ICCF 2018 0-1 (44)}) (2. d4 Nf6 3. a3 (3. Nc3 e5 4. dxe5 Bxb4 5. Bd2 Bxc3 6. Bxc3 Ne4 7. Qd3 O-O 8. O-O-O Nxf2 9. Qxd5 Qxd5 10. Rxd5 Nxh1 11. Bd4 Nc6 12. Be3 Be6 13. Rb5 a6 14. Rxb7 Rfb8 {Aannevik,B (1568)-Vegjeleki,A (2313) ICCF 2006 0-1}) 3... Bf5 4. Nf3 e6 5. Nc3 c6 6. e3 Bd6 7. h3 O-O 8. Bd3 Nbd7 9. Bxf5 exf5 10. O-O Nb6 11. Nd2 Re8 12. Bb2 a6 13. Qf3 g6 {Jatkowski,S (1813)-Holmer,A ICCF 2020 1-0}) (2. e3 e5 3. Bb2 Bd6 4. c4 dxc4 5. Bxc4 Nf6 6. Nf3 Bg4 7. Qb3 Qe7 8. Be2 Nbd7 9. a3 O-O 10. Nc3 c6 11. h3 Be6 12. Qc2 h6 13. g4 Nh7 {Rees,N-Jakobi,W (1759) ICCF 2016 1-0 (26)}) (2. Nc3 e5 3. Bb2 Bxb4 4. a3 Ba5 5. Na2 Nd7 6. c3 Ngf6 7. Qa4 c5 8. O-O-O c4 9. Nf3 O-O 10. Qc2 Ne4 11. Rg1 Ndc5 12. Nxe5 Qf6 13. f3 Qxe5 { Vaessen,J (1143)-Groot,P (2290) ICCF 2020 0-1}) (2. Ba3 e5 3. Nf3 Nd7 4. Nc3 Ngf6 5. d4 a5 6. Qb1 exd4 7. Nxd4 axb4 8. Bxb4 Bxb4 9. Qxb4 c5 10. Qa4 Rxa4 11. Nxa4 Qa5+ 12. c3 cxd4 13. e3 Qxa4 {Adabbo,G-Chiesa,R ICCF 2011 0-1}) (2. d3 e6 3. Qd2 Bd6 4. e4 dxe4 5. c3 exd3 6. g3 Nf6 7. Ba3 O-O 8. Bh3 Nc6 9. c4 Ne4 10. Qe3 Nf6 11. b5 Nb4 12. Kd2 Nc2 13. Qxd3 Nxa3 {Symonds Patel,J-Jakobi,W (1561) ICCF 2020 0-1}) (2. f4 e5 3. fxe5 Bxb4 4. c3 Be7 5. Nf3 f6 6. Ba3 fxe5 7. Nxe5 Nf6 8. Qa4+ Nbd7 9. c4 O-O 10. Nf3 Nb6 11. Qa5 Nxc4 12. Qc3 Bg4 13. d3 Ne3 { Pudney,R-Vale,P ICCF 2016 0-1 (27)}) (2. g3 e5 3. Bg2 Bxb4 4. c4 Ne7 5. cxd5 O-O 6. Qb3 a5 7. a3 Bd6 8. Nc3 Nd7 9. Nf3 Nc5 10. Qc2 c6 11. dxc6 Nxc6 12. e3 g6 13. O-O Bf5 {Zylla,J (2129)-Daatselaar,J (2177) ICCF 2009 1/2 (33)}) (2. h4 Bf5 3. f3 e6 4. g3 h6 5. e3 Bxb4 6. Bb5+ c6 7. Ba4 Nf6 8. g4 Bh7 9. c3 Ba5 10. c4 Qb6 11. cxd5 Nxd5 12. Ba3 Qxe3+ 13. Qe2 Qxe2+ {Johal,A-Smith,S ICCF 2006 0-1 }) 2... Qd6 (2... e6 3. e3 (3. Nf3 c6 4. e3 Nf6 5. b5 Be7 6. c4 O-O 7. Be2 a6 8. bxa6 b6 9. cxd5 cxd5 10. O-O Bxa6 11. Nc3 Nc6 12. Bxa6 Rxa6 13. Qe2 Qa8 14. e4 Nb4 {Kappel,R (2009)-Mogstad,O (1976) ICCF 2009 0-1}) (3. d3 Bxb4+ 4. Nd2 Bxd2+ 5. Qxd2 Nf6 6. Nf3 c5 7. c4 Nc6 8. e3 d4 9. exd4 cxd4 10. Be2 e5 11. Ba3 h6 12. O-O Be6 13. Rfe1 Qc7 14. Bd1 Nd7 {Schulz,B (1920)-Humbert,P (1534) ICCF 2013 1-0 (34)}) 3... Nf6 (3... Bxb4 4. Bxg7 Nc6 (4... Nh6 5. Bxh8 Kd7 6. Bb2 Ke7 7. Qf3 c6 8. Bf6+ Kd7 9. Bxd8 Kxd8 10. Qf6+ Be7 11. Qxh6 Nd7 12. Qxh7 Bf6 13. d4 c5 14. c3 cxd4 15. cxd4 Nf8 16. Qxf7 {Neumann,F (1609)-Metljak,M ICCF 2011 1-0 (31)}) 5. Bxh8 Bd7 6. Qh5 Qe7 7. Qxh7 O-O-O 8. Bc3 Bd6 9. Nf3 Kb8 10. g3 Nf6 11. Qd3 Re8 12. Be2 e5 13. Bb2 Ne4 14. Qxd5 Nc5 15. Qc4 {Rouse,L-Riley, K (1215) ICCF 2020 1/2}) 4. b5 (4. a3 c5 (4... a6 5. c4 (5. Nf3 c5 6. bxc5 Bxc5 7. c4 O-O 8. d4 Be7 9. cxd5 Nxd5 10. Nc3 Qa5 11. Qc2 Nc6 12. Bd3 h6 13. O-O Rd8 14. Rfc1 Bd7 15. Nxd5 Qxd5 16. Bc3 Rab8 {Fels,B (2132)-Serovey,M ICCF 2011 1/2 (33)}) 5... dxc4 6. Bxc4 b5 7. Be2 Nc6 8. Nf3 Be7 (8... Bd6 9. Qc2 Bb7 10. O-O O-O 11. Nc3 Ne5 12. Nxe5 Bxe5 13. f4 Bxc3 14. Bxc3 Rc8 15. Bd4 Be4 16. Qb2 Ne8 17. d3 Bb7 18. f5 exf5 19. Rxf5 f6 20. Bd1 {Degterev,P (2460)-Rice,R ICCF 2006 1-0 (27)}) 9. d4 O-O 10. O-O Bb7 11. Qc2 h6 12. Nbd2 Bd6 13. e4 Qc8 14. e5 Bxe5 15. dxe5 Nh7 16. Bd3 {Stapinski,R (1910)-Williams,R (1316) ICCF 2016 1-0 (34)}) (4... Be7 5. f4 (5. Be2 a5 6. b5 c6 7. Nf3 cxb5 8. Bxb5+ Bd7 9. Nc3 O-O 10. O-O Qc7 11. Bd3 Rc8 12. Rc1 Na6 13. Nb5 Qd8 14. Rb1 Nc5 15. Be2 Nce4 16. Ne5 Be8 { Walker,J (1943)-Daatselaar,J (2074) ICCF 2008 0-1}) 5... O-O 6. Nf3 Nbd7 (6... a5 7. b5 Ne4 8. Be2 Bh4+ 9. g3 Bf6 10. d4 c5 11. Bd3 Nd6 12. a4 c4 13. Be2 Nd7 14. Ba3 Be7 15. Bxd6 Bxd6 16. O-O {Etmans,M (2013)-Jong,R (2265) ICCF 2006 0-1 (36)}) 7. Be2 c5 8. bxc5 Nxc5 9. O-O Bd7 10. Nc3 Rc8 11. Ne5 Be8 12. d4 Nce4 13. Nxe4 Nxe4 14. Bd3 Qb6 15. Rb1 Qa5 16. c4 {Haznedaroglu,K (2293)-Daatselaar, J (2074) ICCF 2008 0-1}) (4... c6 5. Nf3 Bd7 (5... Be7 6. d3 b6 7. Nbd2 a5 8. g4 h6 9. Rg1 g5 10. c4 Bb7 11. cxd5 cxd5 12. b5 Nbd7 13. Nd4 Rc8 14. Rc1 Ne5 15. f4 Ng6 16. N2f3 gxf4 17. exf4 {Fagerbekk,E (2220)-Mogstad,O (1912) ICCF 2010 1/2 (38)}) 6. c4 dxc4 7. Bxc4 a5 8. bxa5 Qxa5 9. O-O Be7 10. Qb3 b5 { Degterev,P (2419)-Likhachev,S (2147) ICCF 2013}) (4... Bd6 5. f4 (5. c4 a5 6. c5 Be7 7. Nf3 axb4 8. axb4 Rxa1 9. Bxa1 O-O 10. Be2 b6 11. Bxf6 Bxf6 12. d4 bxc5 13. bxc5 c6 14. O-O Nd7 15. Qa4 Qc7 16. Nbd2 {Lilleeng,A (2111)-Büktas,B (2002) ICCF 2010 1/2 (51)}) 5... O-O 6. Be2 c5 7. Nf3 Nbd7 8. bxc5 Bxc5 9. O-O Qb6 10. Qc1 Qd8 11. c4 b6 12. cxd5 Nxd5 13. d4 Bd6 14. Qc6 {1-0 (14) Jäger, E-Kristensen,B (1945) ICCF 2007}) (4... Nbd7 5. c4 dxc4 (5... c5 6. cxd5 exd5 7. Nf3 cxb4 8. Be2 Bd6 9. O-O O-O 10. Qc2 a5 11. Bd4 bxa3 12. Nxa3 Bb4 13. Qb2 b6 14. Rfc1 Ba6 15. Bxa6 Rxa6 16. Nb5 Nc5 17. Bxf6 {Buczinski,H (2200) -Benedetto,D ICCF 2011 1/2 (41)}) 6. Bxc4 a5 7. b5 Nb6 8. Qc2 Nxc4 9. Qxc4 Qd5 10. Qxd5 Nxd5 11. Nf3 a4 12. Nc3 Bd7 {0-1 (12) Thomsen,J (1587)-Åberg,L (2143) ICCF 2014}) 5. bxc5 Bxc5 6. d4 Qb6 7. Qc1 Be7 8. Nd2 Bd7 9. Bd3 O-O 10. Ngf3 Bb5 11. Bxb5 Qxb5 12. a4 Qa6 13. Ba3 Bxa3 14. Qxa3 Rc8 15. Qd3 Qa5 {Visser,A (1969)-Kjeldsen,K (1955) ICCF 2012 1/2}) 4... a6 (4... c5 5. Nf3 (5. a4 a6 6. Nf3 axb5 (6... Bd6 7. c4 O-O 8. Nc3 Re8 9. Be2 Nbd7 10. O-O Qc7 11. cxd5 exd5 12. a5 Qd8 13. d4 c4 14. b6 Bb4 15. Qc2 Bxc3 16. Qxc3 Ne4 17. Qb4 {Szabo,A (2307)-Dikmen,A (2324) ICCF 2006 1-0 (49)}) 7. Bxb5+ Bd7 8. Nc3 Nc6 9. d4 (9. Be2 Be7 10. O-O O-O 11. Nb5 Ne4 12. c4 Nb4 13. d4 Bc6 14. cxd5 Bxd5 15. Nd2 cxd4 16. Bxd4 Nxd2 17. Qxd2 Nc6 18. Bc3 {Böhnke,H (2089)-Ballard,D (2036) ICCF 2009 1/2 (34)}) 9... cxd4 10. exd4 Be7 11. O-O O-O 12. Re1 Qc7 13. Ne5 Rfc8 14. Nxd7 Qxd7 15. Ne2 Qc7 16. Bd3 b6 {Sommeling,G (1686)-Daatselaar,J (2200) ICCF 2020 0-1 (37)}) (5. c4 Be7 6. d4 (6. Nf3 O-O 7. Ne5 (7. a4 a6 8. Qc2 Nbd7 9. Be2 dxc4 10. Na3 b6 11. O-O Nd5 12. Nxc4 Bb7 13. d4 Qc7 14. dxc5 Bxc5 15. Rfd1 N7f6 16. Be5 Qe7 17. Qb2 Rfd8 18. Ne1 axb5 {Kazmierczuk,Z (2048)-Ramsden,J (2067) ICCF 2013 1-0 (41)}) 7... Nbd7 8. f4 Nxe5 9. Bxe5 Nd7 10. Bb2 e5 11. fxe5 d4 12. exd4 cxd4 13. Bxd4 Re8 14. Be2 Bh4+ 15. g3 {Groot,J-Prieckaerts,P (1826) ICCF 2013 0-1 (26)}) 6... O-O 7. Nf3 b6 8. dxc5 bxc5 9. Nbd2 Bb7 10. a4 a5 11. Qc2 Nbd7 12. Bd3 g6 13. O-O Ne8 14. cxd5 exd5 15. e4 d4 16. Ba3 Rc8 { Dijk,J (1547)-Velez Arana,J (1671) ICCF 2017 1-0 (31)}) (5. bxc6 Nxc6 6. Nf3 Bd6 7. c4 e5 8. cxd5 Nxd5 9. Bc4 Nb6 10. Bb3 e4 11. Bxg7 Rg8 12. Bb2 Nb4 13. Kf1 Nd3 14. Qc2 exf3 15. Qxd3 fxg2+ 16. Kg1 gxh1=Q+ {Yeung,C (1740)-Vegjeleki, A (2313) ICCF 2006 0-1}) 5... Bd6 (5... Nbd7 6. Ne5 Nxe5 7. Bxe5 Bd6 8. d4 Qa5+ 9. Nd2 Bxe5 10. dxe5 Nd7 11. Qh5 O-O 12. c4 Qc3 13. Rd1 a6 14. Be2 axb5 15. cxb5 Rxa2 16. O-O Rxd2 17. Rde1 {Hanamitsu,I (1811)-Reinhart,K (2471) ICCF 2006 0-1 (28)}) (5... a6 6. c4 axb5 7. cxd5 exd5 8. Bxb5+ Bd7 9. Bxd7+ Nbxd7 10. O-O Be7 11. Nc3 O-O 12. Qc2 Nb6 13. d3 c4 14. dxc4 dxc4 15. Rfd1 Qc8 16. Nb5 Rd8 17. Rxd8+ {Kapustin,A (1941)-Efimov,A (1920) ICCF 2014}) (5... Bd7 6. c4 Be7 7. Nc3 O-O 8. Bd3 a6 9. a4 b6 10. Ne5 dxc4 11. Bxc4 axb5 12. axb5 Rxa1 13. Qxa1 Bd6 14. Ne2 Ne8 15. O-O Bc8 16. f4 Bb7 17. Qa7 {Recasens Sánchez,J (2124)-MacMillen,A (1915) ICCF 2008 1-0 (40)}) (5... Qa5 6. Nc3 Bd7 7. Be2 Be7 8. O-O O-O 9. a4 a6 10. Qb1 h6 11. Ne5 d4 12. bxa6 Nxa6 13. Nxd7 Nxd7 14. Ne4 Nf6 15. c3 dxe3 16. fxe3 Nxe4 17. Qxe4 {Domenche Redondo,F (1763)-Lucena Cifré, R (1678) ICCF 2017 1-0 (29)}) 6. c4 (6. d3 Qa5+ 7. Nbd2 Qxb5 8. Rb1 Qd7 9. Be2 Nc6 10. O-O e5 11. Nb3 O-O 12. c3 Rb8 13. h3 e4 14. dxe4 dxe4 15. Nh2 Qc7 16. Ng4 Nd7 17. Nd2 f5 {Zanin,A-Klochán,P (2348) ICCF 2019 0-1 (33)}) (6. d4 c4 7. a4 a6 8. Be2 axb5 9. axb5 Rxa1 10. Bxa1 Qa5+ 11. Nc3 Ne4 12. O-O Nxc3 13. Bxc3 Qxc3 14. Qd2 Qxd2 15. Nxd2 Bb4 16. Nf3 Bc3 17. Rb1 Ke7 {Martínez Muñoz, J-Noriega de la Sierra,A (1980) ICCF 2012 0-1 (30)}) 6... Nbd7 (6... O-O 7. Qc2 (7. Be2 Re8 8. O-O e5 9. cxd5 e4 10. Ne1 Nxd5 11. d3 Qc7 12. h3 Bh2+ 13. Kh1 Be5 14. Qc1 Bxb2 15. Qxb2 Bf5 16. Nd2 Nf6 17. Rc1 Nbd7 18. d4 {1/2 (18) Kural, A (2140)-Khrolenko,V ICCF 2009}) (7. a4 b6 (7... Nbd7 8. d3 Re8 9. Be2 e5 10. cxd5 Nxd5 11. Nbd2 Nf8 12. Ne4 f6 13. O-O Be7 14. Rc1 b6 15. d4 exd4 16. Bc4 Be6 17. Qb3 {Fels,B (2162)-Pajukari,S (1711) ICCF 2009 1-0 (37)}) 8. g3 Nbd7 9. Bg2 Bb7 10. O-O Qc7 11. cxd5 exd5 12. Qc2 Rfe8 13. d4 Rac8 14. Rc1 c4 15. Nfd2 h6 16. Ba3 Bxa3 17. Nxa3 Nf8 18. Nab1 Ng6 {Buss,M (2237)-Jones,J (1922) ICCF 2019 1/2 (68)}) (7. d4 Nbd7 8. Be2 (8. Nbd2 cxd4 9. exd4 dxc4 10. Bxc4 Nb6 11. O-O Nxc4 12. Nxc4 b6 13. Nfe5 Bb7 14. Nxd6 Qxd6 15. a4 Rfc8 16. f3 Nd5 17. Rf2 a6 18. Qb3 axb5 19. axb5 Rxa1+ {Kirk,T-Morrell,T ICCF 2017 0-1 (29)}) 8... b6 9. O-O (9. a4 cxd4 10. exd4 dxc4 11. Nbd2 c3 12. Bxc3 Bb7 13. Bb2 Nd5 14. O-O Nf4 15. Nc4 Bb4 16. g3 Rc8 17. gxf4 {Frydendal,O (1899)-Kristjánsson,S ICCF 2010 1-0 (26)}) 9... Bb7 (9... Ne4 10. dxc5 Ndxc5 11. Qd4 Nf6 12. cxd5 exd5 13. Nc3 Bb7 14. Rfd1 Ne6 15. Qh4 Rc8 16. Rac1 Re8 17. Bd3 Be7 18. Bf5 Rc4 19. Nd4 Nxd4 20. Rxd4 Rxd4 {Jamieson,I (2035)-MacMillen,A (1998) ICCF 2010 1/2 (37)}) 10. Nc3 (10. cxd5 exd5 11. Nc3 (11. dxc5 bxc5 12. a4 Re8 13. a5 Bc7 14. a6 Bc8 15. Qc2 Qe7 16. Nc3 Nb6 17. Rfd1 h6 18. Na4 Nxa4 19. Bxf6 Qxf6 20. Rxa4 Qd6 21. Bc4 Be6 22. e4 d4 {Böhnke,H (2164)-Dunlop,G (2130) ICCF 2011 1/2 (36)}) 11... Re8 12. Qc2 a5 13. bxa6 Bxa6 14. Bxa6 Rxa6 15. Nb5 Bb8 16. dxc5 bxc5 17. Rfd1 Qb6 18. a4 Qc6 19. Ng5 Be5 20. Bc3 h6 21. Nf3 Bxc3 {Baumann,W (2054)-Staf,G (2099) ICCF 2009 1/2 (38)}) (10. Nbd2 Qc7 11. h3 cxd4 12. exd4 Rac8 13. Rc1 Qb8 14. a4 Ne4 15. Nxe4 dxe4 16. Nd2 Bf4 17. Rc3 Rfd8 18. a5 Nf6 19. a6 Ba8 20. g3 Bh6 21. Nb3 {Böhnke,H (2099)-Tyulenko,Y ICCF 2010 0-1 (47)}) (10. dxc5 Nxc5 11. cxd5 Nxd5 12. Qd4 f6 13. Nbd2 Qe7 14. Nc4 Bc7 15. Qh4 e5 16. Ncd2 Rfd8 17. Nb3 a6 18. Nxc5 bxc5 19. bxa6 Bxa6 20. Bxa6 Rxa6 21. Qc4 Qe6 {Baumann,W (2013) -Owens,S (2027) ICCF 2009 1/2 (48)}) 10... dxc4 11. Bxc4 cxd4 12. Nxd4 Qc7 13. Be2 Bxh2+ 14. Kh1 Be5 15. Rc1 Nc5 16. Ba3 Rfd8 17. Qd2 Rd7 18. f4 {Morales Viscaya,J-Muñoz Vieites,A ICCF 2014 0-1}) (7. Nc3 b6 8. a4 Re8 9. Be2 e5 10. cxd5 e4 11. Ng1 Be5 12. Bc4 Bb7 13. f4 Bxc3 14. Bxc3 Nxd5 15. Nh3 Nxc3 16. dxc3 Qh4+ 17. Nf2 Qe7 18. Qb3 Nd7 {Welti,M (2042)-Seidl,A ICCF 2014 1/2 (31)}) 7... a6 8. Nc3 Re8 9. Be2 axb5 10. Nxb5 e5 11. d3 Nc6 12. a3 d4 13. O-O Be7 14. e4 Nd7 15. Rab1 Nf8 16. Nd2 Ng6 17. g3 Bh3 18. Rfe1 {Zylla,J (2267)-Daatselaar,J (2074) ICCF 2008 1/2 (25)}) 7. Be2 (7. Nc3 b6 (7... O-O 8. Be2 b6 9. O-O Bb7 10. cxd5 (10. a4 Rc8 11. cxd5 exd5 12. d4 Re8 13. dxc5 Nxc5 14. Qc2 Nce4 15. Nxe4 Rxc2 16. Nxd6 Qxd6 17. Bxf6 Qxf6 18. Bd3 Rc3 19. Rfd1 Rxd3 20. Rab1 Rxd1+ 21. Rxd1 Qc3 {Neumann,F (1522)-Askvig,B (1724) ICCF 2020 0-1 (29)}) 10... exd5 11. Rc1 Qc7 12. d4 Rfe8 13. h3 c4 14. Nh4 a6 15. Nf5 Bf8 16. a4 Ne4 17. Nxe4 Rxe4 18. Bf3 Re6 {Cottarelli,F (1897)-Slavin,Y ICCF 2012 1/2}) 8. Qb3 (8. d4 Bb7 9. dxc5 Nxc5 10. cxd5 Nxd5 11. Nxd5 Bxd5 12. Rc1 O-O 13. Bc4 Bxc4 14. Rxc4 Qd7 15. a4 a6 16. Rd4 Rfd8 17. O-O f6 18. bxa6 e5 19. Rd5 {Kögeler,A (2185) -Kappelhof,W (2338) ICCF 2020 (34)}) 8... Bb7 9. Be2 O-O 10. a4 d4 11. Nd1 e5 12. d3 Qc7 13. h3 a6 14. O-O axb5 15. axb5 Rxa1 16. Bxa1 Ra8 17. Bb2 Qd8 18. Ng5 Ra7 {Whittaker,I (2085)-Anderson,J (1914) ICCF 2019 1/2 (38)}) 7... O-O ( 7... e5 8. d3 d4 9. O-O O-O 10. Nbd2 Bc7 (10... Qe7 11. Ng5 Bc7 12. Bf3 a6 13. a4 h6 14. Nge4 Nxe4 15. Bxe4 Nf6 16. Bf3 Ba5 17. Ba3 axb5 18. axb5 Be6 19. Nb3 Bb6 20. Qe2 {Wantoch-Rekowski,J (2288)-Schiendorfer,R ICCF 2006 1/2 (29)}) 11. Nh4 Re8 12. Nf5 h5 13. a4 Nf8 14. Ng3 g6 15. Bf3 Ne6 16. h3 Rb8 17. Re1 Ba5 18. Re2 Bb4 19. exd4 {Whittaker,I (2083)-Falandt,J (2150) ICCF 2020 1/2 (29)}) ( 7... a6 8. a4 b6 9. O-O Bb7 10. d4 Qc7 11. Nbd2 O-O 12. h3 axb5 13. axb5 cxd4 14. Bxd4 Rxa1 15. Bxa1 Ra8 16. Qb1 Nc5 17. Rc1 Qe7 18. Ne5 Nfe4 19. Ndf3 { Kirk,T (1527)-Wittenstein,S (1851) ICCF 2018 0-1 (49)}) 8. O-O (8. d3 b6 9. Nbd2 Bb7 10. O-O Qe7 (10... a6 11. a4 axb5 12. axb5 Rxa1 13. Qxa1 Qc7 14. Bc3 Rd8 15. h3 Ra8 16. Qb2 h6 17. Ra1 Qb8 18. Bd1 Qd8 19. Rxa8 Qxa8 20. Be2 Be7 { 1/2 (20) Petters Merino,O (1924)-Neves,B (2051) ICCF 2012}) 11. Qc2 (11. a4 Rad8 (11... a5 12. bxa6 Bxa6 13. Qc2 e5 14. e4 d4 15. Nb1 Ne8 16. Na3 f5 17. Nd2 f4 18. Nb5 Nc7 19. Nxc7 Bxc7 20. Nb1 Nf6 21. Na3 Bb7 22. Nb5 g5 23. Nxc7 { Kirk,T-Angres,R (1958) ICCF 2017 1/2 (48)}) 12. a5 Bb8 13. Qc2 e5 14. cxd5 Nxd5 15. axb6 axb6 16. Rad1 Nb4 17. Qb3 Kh8 18. e4 f5 19. Ne1 Rf6 {Andersson,L-Kirk, T ICCF 2018 0-1 (49)}) 11... e5 (11... a5 12. a4 Rac8 13. Rfe1 h6 14. Bf1 Rfe8 15. e4 dxe4 16. dxe4 e5 17. Nh4 Nf8 18. Nf5 Qd7 19. Qb3 Bc7 20. Rad1 Rcd8 21. Nb1 Qe6 22. Nc3 Nxe4 {Kural,A (2305)-Andreassen,E (2189) ICCF 2011 1-0 (39)}) 12. cxd5 Nxd5 13. Qb3 a6 14. a4 Bc7 15. g3 Nb4 16. e4 Rfe8 17. Nc4 Rad8 18. Nh4 Nf6 19. Nf5 Qe6 {Kural,A (2324)-Heß,H (2328) ICCF 2013 1-0 (77)}) 8... b6 (8... Qe7 9. a4 (9. Nc3 b6 10. Qc2 Bb7 11. h3 dxc4 12. Bxc4 Rad8 13. Be2 Ne5 14. Nxe5 Bxe5 15. Rfd1 Ne4 16. Nxe4 Bxb2 17. Qxb2 Bxe4 18. d3 Bb7 19. a4 Qg5 20. g3 Qf5 {Bäckström,M (2228)-Zylla,J (2129) ICCF 2009 0-1 (47)}) 9... e5 10. cxd5 e4 11. Ne1 Nxd5 12. d3 exd3 13. Qxd3 (13. Nxd3 N7f6 14. Nd2 Qc7 15. h3 c4 16. Rc1 cxd3 17. Rxc7 dxe2 18. Qxe2 Bxc7 19. Rc1 Bd6 20. e4 Nf4 21. Qf3 Ng6 22. Nc4 Be7 23. Bxf6 gxf6 24. a5 Be6 {Di Pietro,R (1665)-Bonaretti,A ICCF 2008 0-1 (38)}) 13... Nb4 14. Qa3 Rd8 15. Nf3 Nf6 16. Qc3 Bf5 17. Nbd2 Rd7 18. Rfc1 Bd3 19. Bf1 Rad8 20. h3 Qe6 21. Kh1 Be7 22. Qb3 Bxf1 23. Qxe6 fxe6 24. Nxf1 Nd3 25. Rc2 Ne4 26. Kg1 Nxb2 27. Rxb2 Bf6 28. Rbb1 Bxa1 29. Rxa1 Rd1 30. Ra2 Rc1 31. g4 Rdd1 32. N3h2 Nd2 {0-1 (32) Frydendal,O (1839)-Vananderoye,T ICCF 2010 Irregular Openings}) (8... Qc7 9. cxd5 exd5 10. d4 c4 11. Nc3 Re8 12. a4 a5 13. bxa6 bxa6 14. Ba3 Bxa3 15. Rxa3 Nb8 16. Ne5 Nc6 17. f4 Qd6 18. Ra1 Rb8 19. e4 dxe4 20. Bxc4 {Jamieson,I (2035)-Mackintosh,I (2325) ICCF 2010 1/2 (41)}) (8... e5 9. cxd5 e4 10. Ne1 Nxd5 11. d3 Qc7 12. g3 Be5 13. Qc1 N7f6 14. dxe4 Nxe4 15. Bf3 Bxb2 16. Qxb2 Ndf6 17. Nc3 Ng5 18. Nd5 Nxf3+ {0-1 (18) Dagis,M-Ciornas,V ICCF 2005}) (8... a5 9. a4 e5 10. d4 exd4 11. exd4 Nb6 12. Nbd2 cxd4 13. Bxd4 Nxc4 14. Nxc4 dxc4 15. Bxc4 Bg4 16. h3 Bxf3 17. Qxf3 Bh2+ 18. Kxh2 Qxd4 19. Bb3 b6 20. Rfd1 {Kirk,T-Gitananda,R (1910) ICCF 2017 1-0 (41)}) 9. cxd5 (9. a4 Bb7 10. a5 (10. h3 e5 11. d3 dxc4 12. dxc4 Qe7 13. a5 e4 14. Nfd2 Rad8 15. Qc2 Ne5 16. Nc3 Bb8 17. a6 Ba8 18. Rfd1 Ng6 19. Nf1 Nh4 20. Rxd8 Rxd8 21. Rd1 Be5 {Skerlík, S (2331)-Dufour,M (2240) ICCF 2010 1/2 (40)}) (10. d4 Qe7 11. Nbd2 Rfd8 12. a5 bxa5 13. cxd5 Bxd5 14. Rxa5 Bc7 15. Ra1 Ne4 16. Qc2 Nxd2 17. Nxd2 Rac8 18. Qb1 Bb6 19. Bd3 cxd4 20. Bxd4 Bxd4 21. exd4 Bxg2 {Kirk,T-Bas Fortuny,M (1831) ICCF 2018 0-1 (36)}) (10. d3 Rc8 11. Nbd2 Qe7 12. a5 Bb8 13. Qc2 e5 14. axb6 axb6 15. Nh4 e4 16. cxd5 Nxd5 17. Nf5 Qg5 18. dxe4 Nb4 19. Qb1 Rfe8 20. f4 Qg6 21. Bxg7 Bxe4 {Ilzig,G-Himpel,R (1914) ICCF 2016 1-0}) (10. cxd5 Bxd5 11. d3 Bb7 12. Nbd2 a6 13. Nc4 Bc7 14. Qb3 axb5 15. axb5 Qe7 16. e4 Rfd8 17. Nfd2 Bf4 18. e5 Ne8 19. g3 Qg5 20. Rxa8 Rxa8 21. Ne4 Bxe4 {Kural,A (2001)-Frydendal,O (1912) ICCF 2007 1-0}) 10... bxa5 11. cxd5 (11. Qc2 a6 12. Na3 Qe7 13. d3 Rfb8 14. Rfd1 a4 15. bxa6 {Frydendal,O (1839)-Eschert,U (1945) ICCF 2010 0-1 (36)}) 11... exd5 12. Bc3 (12. Qa4 Bc7 13. Bc3 d4 14. exd4 Re8 15. Qd1 Nd5 16. dxc5 Nxc5 17. Bc4 Nf4 18. d4 Ne4 19. d5 Bb6 20. Ra4 {Daatselaar,J (2203)-Refalo,J (2261) ICCF 2006 0-1 (42)}) 12... Bc7 13. d3 Re8 14. Nbd2 a6 15. bxa6 Rxa6 16. Qc2 d4 17. Bb2 dxe3 18. fxe3 Ng4 19. Qc3 Ndf6 20. e4 Qb8 {Frydendal,O (1788) -Prystenski,A (2181) ICCF 2011 0-1}) (9. Qc2 Bb7 10. Nc3 (10. Rd1 h6 11. cxd5 exd5 12. Nc3 Re8 13. d4 c4 14. a4 a6 15. Nd2 a5 16. Ba3 Bb4 17. Qb2 Qe7 18. Rdb1 Bxa3 {Wantoch-Rekowski,J (2305)-Walczak,A (2369) ICCF 2006 1/2 (46)}) 10... Qc7 11. h3 dxc4 12. Bxc4 Bxf3 13. gxf3 Ne5 14. Ne4 Nxf3+ 15. Kh1 Be5 16. Bxe5 Qxe5 17. Ng3 Rad8 18. d3 Qc7 19. Qd1 Qb7 20. e4 Ne5 {Meara,P-Wilson,M ICCF 2015 0-1 (40)}) 9... exd5 10. d4 Re8 11. Nc3 {1-0 (11) Braak,J (1878) -Essen,W (1932) ICCF 2009} Nf8 12. Qc2 Ne6 13. Rfd1 Bb7 14. Rac1 c4 15. Ne5 a6 16. bxa6 {Vegjeleki,A (2145)-Daatselaar,J (2074) ICCF 2008 1/2 (32)}) (4... c6 5. a4 Bd6 (5... a6 6. Nf3 Nbd7 7. c4 Bd6 8. Ba3 Qe7 9. Bxd6 Qxd6 10. d4 Qb4+ 11. Nbd2 c5 12. Be2 dxc4 13. Bxc4 Ne4 14. O-O Nxd2 15. Nxd2 O-O 16. Rb1 { Riikonen,O (2196)-Dekker,G ICCF 2015 1-0 (29)}) (5... Bd7 6. f4 a6 7. Nc3 axb5 8. axb5 Ra5 9. Rxa5 Qxa5 10. Qa1 Qxa1+ 11. Bxa1 Be7 12. bxc6 Nxc6 13. Nf3 O-O 14. Bd3 Nb4 15. Ke2 Nxd3 16. cxd3 b5 17. Rb1 {Stapinski,R (1820)-Bevan,S (1674) ICCF 2018 1-0}) 6. Nf3 a6 (6... O-O 7. Be2 a6 8. c4 axb5 (8... Nbd7 9. O-O (9. bxc6 bxc6 10. O-O c5 11. cxd5 exd5 12. Ba3 (12. Qc2 Qe7 13. d3 Re8 14. Re1 Bb7 15. Bf1 Nf8 16. g3 Ne6 17. Nbd2 Bc7 18. Ba3 Rac8 19. Rab1 Bd6 20. e4 dxe4 21. dxe4 Nd4 22. Nxd4 cxd4 23. Bxd6 Qxd6 {Buczinski,H (2041)-Rusznák,Z (1981) ICCF 2020 1-0 (84)}) 12... Re8 13. Nc3 Nf8 14. a5 Rb8 15. h3 Qxa5 16. Qa4 Qd8 17. d4 c4 18. Bxd6 Qxd6 19. Ne5 Ne6 20. Rfb1 Rxb1+ {Lykke,H (2442)-Lembeck,K (2512) ICCF 2017 1/2 (28)}) (9. cxd5 exd5 10. bxc6 bxc6 11. O-O Re8 12. d4 Ne4 13. Nbd2 Ndf6 14. Qc2 Bg4 15. Nxe4 Nxe4 16. Ba3 Bc7 17. Rfc1 Re6 18. Ne5 Bf5 19. Bd3 Rh6 20. Nxc6 Bxh2+ {Fernández Fornés,J (2248)-Glinz,A (2390) ICCF 2016 1/2 (34)}) 9... axb5 10. axb5 Rxa1 11. Bxa1 cxb5 (11... Qc7 12. Qc1 c5 13. d3 b6 14. h3 Bb7 15. Bc3 Ne5 16. Nbd2 Nxf3+ 17. Bxf3 Nd7 18. Qb2 Bh2+ 19. Kh1 { 1/2 (19) Kural,A (2394)-Caron,S (2440) ICCF 2019}) 12. cxb5 e5 13. d3 Re8 14. Nbd2 Nf8 15. h3 Ng6 16. Qa4 Be6 17. Bb2 Nd7 18. Ra1 h6 19. Ba3 {Daatselaar,J (2200)-Schreuders,A (2335) ICCF 2020 0-1 (56)}) 9. axb5 Rxa1 10. Bxa1 Nbd7 11. Nc3 c5 12. Qb3 dxc4 13. Bxc4 Qc7 14. Qb2 b6 15. Ne4 Be7 16. O-O Bb7 17. d3 { Kural,A (2401)-Woodard,D (2411) ICCF 2017 1/2 (27)}) 7. c4 axb5 8. axb5 Rxa1 9. Bxa1 O-O 10. bxc6 bxc6 11. Be2 Nbd7 12. Qc2 Ba6 13. O-O Qc7 14. d3 dxc4 (14... Ra8 15. Nbd2 c5 16. Bb2 (16. Rc1 Bb7 17. h3 h6 18. Bb2 Qb8 19. Rb1 Qc7 20. Qc1 Qc8 {Hering,H (2193)-Giesemann,S (2031) ICCF 2012 1/2}) 16... Bb7 17. Ra1 Rxa1+ 18. Bxa1 {Schmidt,K (2132)-Schmidt,D ICCF 2010 1/2}) 15. dxc4 e5 16. Nfd2 { Fagerbekk,E (2292)-Mogstad,O (2132) ICCF 2015 1/2 (35)}) (4... Bd7 5. Nf3 (5. a4 Be7 6. c4 O-O 7. Nf3 a5 8. Be2 c6 9. O-O Bb4 10. Nc3 c5 11. d4 Be8 12. cxd5 Nxd5 13. Nxd5 Qxd5 14. Ne5 Nd7 15. Bf3 Qd6 16. Bxb7 {Piriyev,M-Tago,S (1811) ICCF 2012 0-1}) (5. d4 Bd6 6. c4 c6 7. a4 cxb5 8. axb5 O-O 9. Nf3 Qc7 10. Qb3 b6 11. Nc3 Bc8 12. cxd5 Nxd5 13. Nxd5 exd5 14. Qxd5 Bb7 15. Qh5 Bb4+ 16. Nd2 { Martínez Muñoz,J (1720)-Flew,B ICCF 2013 0-1 (68)}) 5... Bd6 6. c4 a6 (6... h6 7. Nc3 O-O 8. Be2 Ne4 {0-1 (8) Chiverton,B-Österberg,S (1715) ICCF 2014}) 7. a4 axb5 8. axb5 Rxa1 9. Bxa1 O-O 10. Nc3 c6 11. Qb1 e5 12. cxd5 cxd5 13. Be2 Be6 14. h3 h6 15. g4 Nbd7 16. Rg1 {Wilshusen,H (1314)-Costa,M ICCF 2020 0-1}) (4... b6 5. Nf3 (5. f4 Bb7 (5... Bd6 6. Nf3 Bb7 7. Be2 c6 8. a4 c5 9. O-O Nbd7 10. c4 dxc4 11. Na3 Qe7 12. Nxc4 Ne4 13. d3 Ng3 14. Nxd6+ Qxd6 15. hxg3 f6 16. Qc2 Bxf3 17. Bxf3 {Smail,J-Williams,R (1526) ICCF 2012 1-0 (39)}) 6. Nf3 Nbd7 7. Be2 Be7 8. O-O O-O 9. a4 Re8 10. Nd4 a5 11. Nc6 Bxc6 12. bxc6 Nc5 13. Rf3 Nfe4 14. d4 Na6 15. Nd2 f5 16. Nxe4 {Jäger,E-Göbel,K ICCF 2007 1-0 (30)}) 5... Be7 ( 5... a6 6. a4 axb5 7. axb5 Rxa1 8. Bxa1 Bb4 (8... c6 9. Nc3 Be7 10. Be2 O-O 11. O-O Bb7 12. Ne5 c5 13. Bf3 Qd6 14. Ne2 Nfd7 15. Nxd7 Qxd7 16. Qb1 {Wilshusen,H (1317)-Bernardara,E (1290) ICCF 2020 1-0 (33)}) 9. Be2 O-O 10. O-O Nbd7 11. c4 dxc4 12. Bxc4 Nc5 13. Ne5 Bb7 14. d4 Ncd7 15. Qb3 Bd6 16. f3 {Wilshusen,H (1648)-Cook,P (1679) ICCF 2015 1-0 (31)}) (5... Bb7 6. c4 (6. Be2 Nbd7 7. O-O c6 8. a4 cxb5 9. axb5 Bd6 10. d3 O-O 11. Nbd2 Qc7 12. c4 dxc4 13. dxc4 a6 14. Qb3 Nc5 15. Qc2 Be7 16. Be5 Qd8 17. Rfd1 Bxf3 {Flewelling,H (1796)-Mohammed,H (1684) ICCF 2015 1-0}) 6... dxc4 7. Bxc4 Bd6 8. Nc3 O-O 9. O-O a6 10. a4 c6 11. Qe2 axb5 12. axb5 Nbd7 13. bxc6 Bxc6 14. Nb5 Bxb5 15. Bxb5 Qe7 16. Rfb1 Rfc8 17. Rxa8 {Kappelhof,W (2338)-Bes,R (1844) ICCF 2020 1-0 (41)}) 6. d4 Bb7 7. Nbd2 (7. c4 Nbd7 8. Nc3 O-O 9. Bd3 dxc4 10. Bxc4 Bb4 11. Qb3 Bd6 12. d5 e5 13. O-O e4 14. Nd4 Bxh2+ 15. Kxh2 Ng4+ 16. Kh3 Qg5 17. Nxe4 Qh6+ {Martínez Muñoz, J-Reyes Cortés,R (1586) ICCF 2012 1/2 (26)}) 7... O-O 8. Bd3 Nbd7 9. Qe2 c5 10. bxc6 Bxc6 11. a4 Qc7 12. O-O Bb7 13. c4 dxc4 14. Nxc4 Rac8 15. Rac1 Qb8 16. e4 {Whittaker,I-Cunningham,B (1555) ICCF 2018 1-0 (27)}) (4... Bd6 5. f4 Nbd7 6. Nf3 Qe7 7. Ne5 (7. c4 O-O 8. Qc2 dxc4 9. Bxc4 e5 10. fxe5 Nxe5 11. Bxe5 Bxe5 12. Nc3 Bf5 13. Qxf5 Bxc3 14. Rd1 Qxe3+ 15. Kf1 Bxd2 16. Rxd2 Ne4 {Braak,J (1906)-Guzy,G (2032) ICCF 2005 0-1 (39)}) 7... Ne4 8. Qg4 Rg8 9. Bd3 f5 10. Qh3 Ng5 11. Qh5+ g6 12. Qh6 Nxe5 13. fxe5 Bc5 14. O-O Bd7 15. a4 Nf7 16. Qxh7 { Haznedaroglu,K (1990)-Reinhart,K (2471) ICCF 2006 0-1 (64)}) (4... Nbd7 5. c4 a6 6. a4 Bd6 7. cxd5 exd5 8. Nc3 O-O 9. Nf3 Re8 10. Be2 Ne5 11. Nxe5 Bxe5 12. d4 Bd6 13. O-O Bf5 14. Ba3 Bxa3 15. Rxa3 axb5 16. Nxb5 {Fagerbekk,E (2215) -Gupta,V (2016) ICCF 2013 1-0 (60)}) 5. a4 (5. bxa6 bxa6 6. Nf3 Bd6 7. c4 O-O 8. d4 dxc4 9. Bxc4 Bb7 10. Nbd2 Nd5 11. O-O e5 12. dxe5 Bc5 13. Nb3 Bxe3 14. fxe3 Nxe3 15. Qxd8 Rxd8 16. Rfc1 {1-0 (16) Orban,C-Jokipii,G ICCF 2009}) 5... axb5 (5... Bd6 6. d4 (6. f4 c5 (6... Nbd7 7. Nf3 Qe7 8. d4 (8. Ne5 axb5 9. Bxb5 O-O 10. O-O Rd8 11. a5 c6 12. Be2 Bc7 13. Nxd7 Rxd7 14. Ba3 Qd8 15. Bc5 Rxa5 16. Rxa5 Bxa5 17. Bd4 Ne4 18. Bd3 {Rotte,P (1780)-Kögeler,A (2185) ICCF 2020}) 8... O-O 9. Bd3 axb5 10. axb5 Rxa1 11. Bxa1 c5 12. bxc6 bxc6 13. O-O c5 14. c3 Bb7 15. Nbd2 c4 16. Bc2 h6 17. Ne5 Ra8 {Muri,H (2378)-Krabbe,W (2320) ICCF 2011 1/2 (49)}) 7. Nf3 Nbd7 8. Be2 O-O 9. O-O Qc7 (9... c4 10. Qe1 axb5 11. axb5 Rxa1 12. Bxa1 Qb6 13. Nd4 Nc5 14. Nc3 Bd7 15. d3 cxd3 16. cxd3 Ra8 17. Qg3 Ne8 18. Kh1 {Rotte,P (1780)-Leijen,P (2158) ICCF 2020 0-1 (31)}) 10. c4 Re8 11. Nc3 d4 12. exd4 cxd4 13. Na2 Bxf4 14. Bxd4 e5 15. Be3 Bxe3+ 16. dxe3 axb5 17. cxb5 Qb6 {Figiel,R-Roy Laguens,A (2346) ICCF 2014 0-1 (38)}) 6... O-O 7. c4 c5 8. Nf3 axb5 9. axb5 Rxa1 10. Bxa1 Nbd7 11. dxc5 (11. cxd5 exd5 12. Nc3 Qa5 13. Nd2 Re8 14. Be2 cxd4 15. exd4 Bb4 16. Qc1 Bxc3 17. Qxc3 Qxb5 18. Qf3 b6 { 0-1 (18) Frydendal,O (1913)-Pooley,M (1973) ICCF 2009}) 11... Nxc5 12. Be2 b6 13. O-O (13. cxd5 Nxd5 14. Qd4 f6 15. Nbd2 Bb7 16. O-O Qd7 17. Qg4 Ra8 18. Rd1 Ra4 19. Nc4 Qxb5 20. Nd4 Qd7 21. Nxd6 Qxd6 {Baumann,W (1965)-Haller,P (2041) ICCF 2010 1/2 (27)}) 13... Bb7 14. Nbd2 Nfe4 15. cxd5 Bxd5 16. Nxe4 Bxe4 17. Qd4 {Baumann,W (2052)-Lagergren,H (1961) ICCF 2009 1/2 (41)}) (5... Bd7 6. c4 c6 7. Nc3 Bb4 8. Qb3 c5 9. cxd5 exd5 10. Nxd5 Be6 11. Nxf6+ gxf6 12. Qc2 Nd7 13. Nf3 Ke7 14. Bd3 Rg8 15. O-O Rg7 16. Bxh7 Qc7 17. Be4 {Zhuravlev,K (2179) -Vlasov,A ICCF 2015 1-0 (32)}) 6. axb5 Rxa1 7. Bxa1 Nbd7 (7... Be7 8. f4 Nbd7 9. Nf3 c6 10. Be2 Nb6 11. O-O O-O 12. bxc6 bxc6 13. Qe1 Bd7 14. d3 Bc5 15. Nd4 Qa8 16. Nd2 Qa5 17. N4b3 Bxe3+ 18. Kh1 Qb4 19. Bxf6 {Braak,J (1906)-Machado,F (1942) ICCF 2005 1-0 (36)}) (7... Bd6 8. f4 Nbd7 9. Nf3 O-O 10. Bd3 c5 11. bxc6 bxc6 12. O-O Bb7 13. c4 Ba6 14. Qc2 Qa5 15. Bc3 Qb6 16. Bd4 c5 17. Bxf6 Nxf6 18. Qa4 {Degterev,P (2475)-Ellis,L (2246) ICCF 2010 1/2 (31)}) (7... c6 8. Be2 (8. Nf3 Nbd7 (8... Be7 9. Be2 O-O 10. c4 (10. bxc6 bxc6 11. O-O Nbd7 12. c4 Qa5 13. Bc3 Qc7 14. d4 Ne4 15. cxd5 cxd5 16. Be1 Bb7 17. Nfd2 Nd6 18. Nb3 Nc4 19. Qc2 Bd6 20. h3 Ba6 21. Bd2 Bh2+ {Flewelling,H-Grummitt,W (2048) ICCF 2012 0-1 (38)}) 10... Qa5 11. Nc3 dxc4 12. Bxc4 Bd7 13. Qb1 Bb4 14. bxc6 Bxc6 15. Be2 Nbd7 16. O-O e5 17. Qb3 Nd5 18. Nxd5 Bxd5 19. Bc4 Nc5 20. Qc2 {Mujunen,M (2245) -Satosuo,R (2006) ICCF 2015 1-0 (65)}) 9. Be2 Qa5 10. Bc3 Qc7 11. O-O Bd6 12. bxc6 bxc6 13. d3 O-O 14. Qd2 e5 15. Ba5 Qa7 16. Qc3 e4 17. Nfd2 exd3 18. cxd3 c5 19. Nf3 Re8 {Cottarelli,F (1894)-Morais,G (2323) ICCF 2010 0-1 (46)}) 8... Nbd7 9. f4 Bd6 10. Nf3 O-O 11. O-O c5 12. c4 Qc7 13. Nc3 b6 14. cxd5 exd5 15. d4 Bb7 16. Ne5 Ra8 17. Bb2 Nf8 18. Qd2 Ne6 19. Rc1 {Degterev,P (2545) -Bozyavkin,A (2362) ICCF 2008 0-1 (53)}) 8. Nf3 (8. c4 Bd6 9. Qc2 c5 10. bxc6 bxc6 11. Be2 e5 12. Nf3 O-O 13. d4 e4 14. Nfd2 Qa5 15. Bb2 Ba6 16. O-O Qc7 17. g3 Nb6 18. Nc3 Nxc4 19. Bxc4 Bxc4 {Luzuriaga,N (2336)-Daatselaar,J (2177) ICCF 2009 1/2 (50)}) 8... Bd6 9. d4 (9. Be2 e5 10. d3 O-O 11. Nbd2 Qe7 12. O-O Rd8 ( 12... h6 13. c4 e4 14. Nd4 Nc5 15. dxe4 dxe4 16. N4b3 Nfd7 17. Qc2 f5 18. Nxc5 Nxc5 19. Nb3 Nxb3 20. Qxb3 Be6 21. Rd1 Ra8 22. Bd4 Bc5 23. Be5 Kh7 24. Qb2 { Wilmes,F-Vincent,A ICCF 2010 1-0 (27)}) 13. Bb2 Nb6 14. c4 dxc4 15. Nxc4 Nxc4 16. dxc4 e4 17. Nd4 h5 18. Qc2 Ng4 19. h3 Qh4 20. c5 Bh2+ {Böhnke,H (2089) -Dumitrescu,F (2084) ICCF 2009 1/2 (25)}) 9... O-O (9... c5 10. bxc6 bxc6 11. Be2 Qa5+ 12. Nbd2 Ba6 13. c4 Bxc4 14. Bxc4 dxc4 15. O-O Nb6 16. Qc2 O-O 17. Nxc4 Nxc4 18. Qxc4 Qd5 19. Qc2 Ra8 20. Bb2 {1/2 (20) Skerlík,S (2332)-Galanov, S (2376) ICCF 2008}) 10. Bd3 (10. Be2 c5 (10... c6 11. O-O Qa5 12. Nc3 Qc7 13. Na2 Nb6 14. Qb1 Bd7 15. bxc6 bxc6 16. Nb4 Ne4 17. Na6 Qa7 18. Bd3 f6 19. Nc5 Bxc5 20. Bxe4 dxe4 21. dxc5 Nc4 22. Qb4 {Daatselaar,J (2203)-Holscher,P (2208) ICCF 2006 1/2 (44)}) 11. bxc6 bxc6 12. O-O Qa5 13. Nbd2 Ba6 14. c4 Ra8 15. h3 h6 16. Qc2 {Recasens Sánchez,J (2124)-Fenollar Jordá,M ICCF 2008 1/2 (35)}) 10... c5 (10... Qe7 11. Ne5 Ne4 12. O-O f5 13. f3 Ng5 14. f4 Ne4 15. c4 Bxe5 16. fxe5 dxc4 17. Bxc4 Nb6 18. Bd3 Nd5 19. Qe2 Bd7 20. Bb2 Qg5 {Silfver,T (1761)-Glowinski,D (1739) ICCF 2016 0-1 (35)}) 11. bxc6 bxc6 12. c4 Ba6 13. c5 Be7 14. O-O {Bäckström,M (2228)-Daatselaar,J (2177) ICCF 2009 1/2}) (2... Bf5 3. e3 (3. Nf3 e6 4. a3 (4. c4 dxc4 5. Na3 Nf6 6. Nxc4 Bxb4 7. Qb3 Be7 8. Nfe5 O-O 9. Qxb7 Be4 10. Qb5 Bd5 11. Rc1 a5 12. f3 Nbd7 13. Qa4 Rb8 14. Qc2 Nxe5 15. Nxe5 Bd6 {Skerlík,S (2280)-Ginderskov,H (2267) ICCF 2014 1/2 (32)}) (4. d3 Bxb4+ 5. c3 Ba5 6. Qa4+ c6 7. Nbd2 Nd7 8. e4 dxe4 9. Nxe4 Bxe4 10. dxe4 Nc5 11. Qc4 Qe7 12. Be2 b5 13. Qd4 Na4 14. Rb1 Rd8 15. Qxg7 Qf6 {Domenche Redondo,F (1712)-Khorunzhy,M (2226) ICCF 2019 0-1}) 4... Nf6 5. Nd4 (5. Nh4 Bg6 6. Nxg6 hxg6 7. d4 (7. g3 c5 8. c4 dxc4 9. Bg2 Qd7 10. O-O Nc6 11. Qa4 cxb4 12. axb4 Nd5 13. b5 Ncb4 14. Bd4 Be7 15. Bxg7 Rh5 16. Bd4 Nf4 17. gxf4 Qxd4 18. e3 Qd7 { Kögeler,A (2185)-Rotte,P (1780) ICCF 2020}) 7... Ng4 8. e3 Rxh2 9. Rxh2 Nxh2 10. Be2 Qg5 11. g3 Nd7 12. c4 dxc4 13. Bxc4 Nb6 14. Be2 Qd5 15. Nd2 {Orban, C-Ribaudo,J ICCF 2009 0-1 (33)}) 5... Bg6 6. Nb3 Be7 7. e3 b6 8. g4 O-O 9. h4 h6 10. d3 c5 11. bxc5 bxc5 12. g5 hxg5 13. hxg5 Nh7 14. f4 Qb6 {Straka,J-Malik, M ICCF 2009 1-0 (32)}) (3. d3 e6 4. a3 a5 5. Nd2 a4 6. Ngf3 Nc6 7. b5 Nce7 8. c4 dxc4 9. Nxc4 Qd7 10. b6 c6 11. e4 Bg4 12. Nce5 Bxf3 13. Qxf3 Nf6 14. Nxd7 Nxd7 {Bonatti,A (1716)-Rinaldi,M (1680) ICCF 2014 1/2 (65)}) (3. g3 c6 4. Bg2 e6 5. Nf3 Nf6 6. a3 Nbd7 7. Nh4 Qb6 8. Nxf5 exf5 9. e3 Bd6 10. Bd4 Qc7 11. Nc3 O-O 12. O-O h6 13. Qf3 g6 14. Qd1 Ng4 {Akrill,R-Atwood,R ICCF 2014 1-0 (26)}) 3... Nf6 (3... Nd7 4. d4 e6 5. a3 Nb6 (5... Ngf6 6. Nd2 Ne4 7. Ngf3 Bd6 8. c4 c6 9. c5 Bc7 10. Be2 Ndf6 11. O-O O-O 12. a4 h6 13. b5 Rc8 14. Nb3 Bb8 15. Qe1 Qc7 16. Qb4 Bg4 17. b6 {Frydendal,O (1606)-Nilssen,T (1598) ICCF 2014 1-0 (44)} ) 6. Nc3 Bd6 7. Nf3 Nf6 8. Be2 O-O 9. O-O c6 10. Ne5 a5 11. bxa5 Rxa5 12. f4 h6 13. h3 Qe7 14. g4 Bh7 15. Qc1 {Richardson,D (1712)-Williamson,D (1947) ICCF 2014 0-1 (28)}) (3... e6 4. b5 Nf6 5. Be2 Nbd7 6. Nf3 Bd6 (6... Be7 7. Nh4 Bg6 8. O-O Nf8 9. f4 h6 10. a4 Be4 11. f5 N6d7 12. fxe6 Nxe6 13. Nf5 Bc5 14. Nc3 Bxf5 15. Rxf5 d4 16. Ne4 dxe3 17. Nxc5 {Walker,J (1968)-Bonatti,A (2024) ICCF 2006 1-0}) 7. O-O (7. Nh4 Bg6 8. a4 c5 9. O-O e5 10. a5 Qe7 11. d3 O-O 12. c4 Rad8 13. cxd5 Nxd5 14. Nxg6 hxg6 15. Nd2 Bb8 16. Qb3 N7f6 17. Rfd1 Kh7 18. Qc4 Rh8 {Walker,J (1932)-Nixon,R ICCF 2011 0-1 (29)}) 7... c5 8. d3 O-O 9. c4 Qe7 10. a4 Rad8 11. Nbd2 Bb8 12. a5 Bg6 13. Nh4 e5 14. Nxg6 {1-0 (14) Slupski, M-Nixon,R ICCF 2011}) 4. Nf3 (4. c4 e6 (4... dxc4 5. Bxc4 e6 6. b5 a6 7. a4 axb5 8. axb5 Rxa1 9. Bxa1 Nbd7 10. Nf3 Be7 11. O-O Bg6 12. d4 O-O 13. Nbd2 Qa8 14. Bb2 Nb6 15. Be2 Qa2 16. Qb3 {Frydendal,O (1623)-Vliet,E ICCF 2015 0-1}) 5. a3 (5. c5 a5 6. a3 Be7 7. Nf3 O-O 8. Be2 axb4 9. axb4 Nc6 10. b5 Nb4 11. Rxa8 Qxa8 12. O-O Nd3 13. Bd4 Nd7 {0-1 (13) Flewelling,H (1786)-Conde Poderoso,A (2333) ICCF 2016}) 5... a5 6. Nf3 (6. b5 Be7 7. cxd5 Qxd5 8. Nc3 Qd6 9. d4 Nbd7 10. Qf3 O-O-O 11. Qd1 e5 12. Nf3 Kb8 13. Be2 Ne4 14. O-O Ng5 15. Rc1 h6 { Wantoch-Rekowski,J (2224)-Smit,F (2061) ICCF 2009 1/2 (47)}) 6... axb4 7. axb4 Rxa1 8. Bxa1 Be7 9. Nh4 Bg4 10. Qa4+ Qd7 11. Qxd7+ Nbxd7 12. h3 Bh5 13. g4 Ne4 14. Ng2 Bg6 15. Bxg7 Rg8 {Stapinski,R (1777)-Züger,A (1966) ICCF 2019 1/2 (31)} ) (4. d4 e6 5. a3 a5 6. c3 Nbd7 7. Nf3 Bd6 8. Be2 axb4 9. axb4 Rxa1 10. Bxa1 Qa8 11. Nbd2 Qa2 12. O-O O-O 13. Qb3 Ra8 14. Qxa2 Rxa2 15. h3 Ne4 {Martínez Muñoz,J-Belmar Juaranz,C (2208) ICCF 2012 0-1 (29)}) (4. Bd3 Bxd3 5. cxd3 e6 6. a3 a5 7. b5 c5 8. d4 cxd4 9. Bxd4 Nbd7 10. f4 Bc5 11. Nf3 O-O 12. Nc3 Bxd4 13. Nxd4 Ne4 14. O-O Nxc3 15. dxc3 Rc8 {Etmans,M (2013)-Tanis,C (2307) ICCF 2006 0-1 (25)}) (4. Ne2 e6 5. Ng3 Bg6 6. b5 a6 7. a4 Nbd7 8. Be2 h5 9. Bf3 Bd6 10. d4 axb5 11. axb5 Nb6 12. Nd2 Rxa1 13. Bxa1 Qa8 14. Ne2 Qa2 15. O-O Bxc2 { Karpoff,K (1720)-Lehtinen,P (2248) ICCF 2014 0-1 (31)}) 4... e6 (4... Nc6 5. b5 Na5 6. d3 e6 7. Nbd2 Be7 8. Ne5 c5 9. g4 Bg6 10. h4 h5 11. Nxg6 fxg6 12. g5 Nd7 13. Bh3 e5 14. Qf3 Nb6 15. Bxe5 c4 16. O-O {Jacewicz,G (2216)-Evangelisti,M (1437) ICCF 2017 1-0 (39)}) 5. a3 (5. b5 a6 (5... Bd6 6. c4 (6. Be2 a6 7. Nh4 axb5 8. Nxf5 exf5 9. Bxb5+ c6 10. Bd3 g6 11. O-O Nbd7 12. Nc3 O-O 13. Be2 b5 14. a4 b4 15. Nb1 Ne4 16. c3 {1-0 (16) Hasidume,S (1876)-Siebert,W (2179) ICCF 2009}) (6. Bd3 Bxd3 7. cxd3 Nbd7 8. Nc3 O-O 9. O-O Re8 10. Qb3 Nc5 11. Qc2 Rc8 12. Rab1 e5 13. d4 exd4 14. Nxd4 Bxh2+ 15. Kxh2 Ng4+ 16. Kh3 Re5 17. Kxg4 Qg5+ {Straka,J-Stuart,P ICCF 2009 1-0 (25)}) (6. Ne5 Bxe5 7. Bxe5 O-O 8. Be2 a6 9. bxa6 bxa6 10. d4 Nc6 11. Nd2 Rb8 12. Nb3 Ne4 13. O-O Nc3 14. Qd2 Ne4 15. Qc1 Nxe5 16. dxe5 c6 17. Bxa6 Nc3 {Tago,S (1608)-Miyata,K (1466) ICCF 2015 1-0 (39) }) (6. a4 O-O 7. c4 h6 8. Be2 a6 9. Nc3 dxc4 10. Bxc4 Nbd7 11. O-O axb5 12. axb5 Qe7 13. h3 Rxa1 14. Qxa1 Nb6 15. Be2 Ra8 16. Qd1 Ba3 17. Ba1 {Zhuravlev,K (2158)-Mondy,M (2160) ICCF 2019 1/2 (33)}) 6... O-O 7. Nc3 Nbd7 (7... a6 8. a4 h6 9. cxd5 exd5 10. Be2 c5 11. O-O Re8 12. h3 Bc7 13. d3 Nbd7 14. Rc1 Rc8 15. bxa6 bxa6 16. Nb1 Rb8 17. Ba1 Ba5 18. Nbd2 Bb4 19. Qc2 {Whittaker,I (2085) -McDermott,F (2298) ICCF 2019 0-1 (54)}) 8. d4 c5 9. cxd5 Nxd5 10. Be2 Qa5 11. Rc1 Rfd8 12. O-O Nxc3 13. Rxc3 Qxa2 14. Qc1 Bg6 15. dxc5 Nxc5 16. Ra3 Qd5 17. Rd1 {Whittaker,I (2085)-Pallett,R (2106) ICCF 2019 1/2 (35)}) (5... c6 6. c4 Bd6 (6... Be7 7. a4 O-O 8. d4 Bxb1 9. Qxb1 Qa5+ 10. Kd1 Ne4 11. Qc2 f5 12. Ne5 Bh4 13. g3 Bf6 14. f3 Nd6 15. c5 Bxe5 16. dxe5 Nf7 17. Bd4 Nd7 18. f4 { Frydendal,O (1839)-Brandl,A (1935) ICCF 2010 1-0 (26)}) 7. a4 a6 (7... O-O 8. Be2 Nbd7 9. d4 dxc4 10. Bxc4 Rc8 11. Nbd2 Nb6 12. Be2 cxb5 13. axb5 Bc2 14. Qc1 Bd3 15. Qd1 Bxe2 16. Qxe2 Rc2 17. Bc1 {Vysniauskas,V-Rupsys,A ICCF 2005 0-1 (28)}) 8. Be2 O-O 9. O-O h6 10. h3 Qe7 (10... axb5 11. axb5 Rxa1 12. Bxa1 cxb5 13. Bxf6 Qxf6 14. cxd5 b4 15. dxe6 Qxe6 16. Nd4 Qg6 17. Nxf5 Qxf5 18. d4 Nc6 19. Bd3 Qd5 20. Nd2 Na5 21. Qa4 Rc8 22. Be4 {Whittaker,I-Bradney,R (1907) ICCF 2018 1-0 (69)}) 11. d4 dxc4 12. Nc3 Rc8 13. Nd2 Bb4 14. bxa6 b5 15. axb5 Bxc3 16. b6 Bxb2 17. b7 {Whittaker,I (2097)-Cannon,A (2180) ICCF 2019 1/2 (30)}) ( 5... Be7 6. c4 (6. Be2 a6 7. a4 O-O 8. O-O c6 9. Nh4 Bg6 10. Nxg6 hxg6 11. c4 Qc7 12. cxd5 exd5 13. Nc3 Nbd7 14. d4 axb5 15. axb5 Rxa1 16. Qxa1 Nb6 17. Qa2 c5 {Welti,M (2042)-Cook,P (2022) ICCF 2014 1/2}) 6... O-O 7. Be2 a6 8. a4 axb5 9. axb5 Rxa1 10. Bxa1 h6 11. O-O dxc4 12. Bxc4 Bd3 13. Bxd3 Qxd3 14. Nc3 Nbd7 15. Ne1 Qf5 16. f3 Ra8 17. e4 {Hasler,U (1683)-Nobel,C (1979) ICCF 2004 0-1}) ( 5... h6 6. c4 (6. Be2 a6 7. a4 Be7 8. d3 axb5 9. axb5 Rxa1 10. Bxa1 Qd7 11. Nd4 Bh7 12. Nd2 c5 13. bxc6 bxc6 14. O-O O-O 15. N4b3 Na6 16. Bxf6 Bxf6 17. d4 Qb7 {Ilzig,G (2264)-Schmalz,P (2201) ICCF 2017 1/2 (30)}) 6... a6 7. a4 Be7 8. cxd5 exd5 9. Be2 c5 10. bxc6 bxc6 11. d4 Qb6 12. Ba3 Bxa3 13. Nxa3 O-O 14. O-O Nbd7 15. Nb1 Ne4 16. Qc1 Rfc8 {1/2 (16) Ilzig,G (2264)-Krüger,H (2267) ICCF 2017}) ( 5... c5 6. c4 Be7 7. Nh4 Bg4 8. Qc2 O-O 9. h3 Bh5 10. Bd3 Nbd7 11. g4 Bg6 12. Nxg6 hxg6 13. g5 Nh5 14. h4 d4 15. Be4 Rb8 16. exd4 cxd4 17. Bxd4 {Meara,P (1677)-Raynor,P ICCF 2019 0-1 (40)}) 6. a4 axb5 (6... Nbd7 7. c4 Nc5 8. bxa6 Nxa6 9. Nd4 Bg6 10. Be2 Nb4 11. O-O Be7 12. cxd5 Nfxd5 13. Qb3 c5 14. Nf3 Bc2 15. Qc4 O-O 16. Nc3 Nb6 17. Qb5 Nc8 18. Ne5 {Braak,J (1969)-Sherwood,R ICCF 2013 1/2 (67)}) 7. axb5 Rxa1 8. Bxa1 h6 (8... Nbd7 9. c4 (9. Be2 Bd6 (9... h6 10. O-O Bd6 11. d3 O-O 12. c4 dxc4 13. dxc4 Qa8 14. Nbd2 Qa2 15. Bc3 Ra8 16. Bxf6 Nxf6 17. Nd4 Bg6 18. Qb3 Qxd2 {0-1 (18) Flewelling,H (1832)-Pérez Rodríguez,R ICCF 2014}) 10. c4 dxc4 (10... Qa8 11. Nc3 h6 12. O-O dxc4 13. Bxc4 O-O 14. h3 Qa3 15. Nh4 Bh7 16. Qb3 Qxb3 17. Bxb3 Bd3 18. Re1 Nc5 19. Bd1 Nfe4 20. Nxe4 Nxe4 21. Nf3 Bb4 22. Bb3 {Meara,P-Comien,R (2066) ICCF 2015 0-1 (39)}) 11. Bxc4 O-O 12. O-O Qe7 13. Bb2 Ra8 14. d3 Nb6 15. Nbd2 Rd8 16. Bd4 Bc5 17. Qb3 Bxd4 18. Nxd4 Bg6 19. Rc1 h6 20. h3 Nxc4 {Ilzig,G (2264)-Rodriguez,K (2343) ICCF 2017 1/2 (32)}) 9... Nc5 10. Bxf6 (10. d4 Qa8 11. Nbd2 Nce4 12. c5 b6 13. Be2 bxc5 14. dxc5 Bxc5 15. O-O Nxf2 16. Rxf2 Bxe3 {Braak,J (1934)-Hegelund,B ICCF 2009 0-1}) 10... Qxf6 11. d4 Ne4 12. Qa4 Qd8 13. Be2 Be7 14. O-O O-O 15. Rc1 Qa8 16. Qb3 c6 17. Nbd2 Nxd2 18. Nxd2 Qa5 19. Nf3 cxb5 20. cxd5 {Braak,J (1980)-Visser,A (1992) ICCF 2013 1/2 (32)}) 9. c4 Be7 10. cxd5 Qxd5 11. Nc3 Qc5 12. Qa4 Qa3 13. Bc4 Nbd7 14. Ke2 O-O 15. Qxa3 Bxa3 16. d3 Nb6 {Whittaker, I-Elwood,D (1668) ICCF 2018 1-0 (46)}) (5. c4 Nbd7 (5... Bxb4 6. cxd5 (6. Qa4+ Nc6 7. Nd4 Rb8 8. a3 (8. Nxf5 exf5 (8... dxc4 9. Nxg7+ Ke7 10. Bxc4 {1-0 (10) Braak,J (1934)-Fick,L (2255) ICCF 2010}) 9. cxd5 Qxd5 10. Bxf6 gxf6 11. a3 Ba5 12. Qc2 Qe4 13. Qb2 O-O 14. Nc3 Bxc3 15. Qxc3 Rfd8 16. f4 Rd6 17. Kf2 Rbd8 18. d4 Ne7 19. Bd3 Qe6 {Muri,H (2378)-Zeihser,M (2431) ICCF 2011 1/2 (34)}) 8... Be7 9. Nc3 (9. cxd5 Qxd5 10. Nc3 Qd7 11. Nxf5 exf5 12. d4 O-O 13. Be2 a6 14. O-O b5 15. Qc2 Na5 16. Rfd1 Bd6 17. Nb1 Rfe8 18. d5 Be7 19. Be5 Rbd8 20. Nc3 Ng4 {Gavrijski,D (2143)-Zylla,J (2129) ICCF 2009 0-1 (82)}) 9... O-O 10. Nxf5 exf5 11. cxd5 Nxd5 12. Nxd5 Qxd5 13. Bc4 Qxg2 14. O-O-O Qe4 15. Rhg1 g6 16. f3 Qh4 {Kural,A (2138)-Araboga,M (1999) ICCF 2009 0-1 (27)}) 6... O-O (6... Nxd5 7. a3 Ba5 8. e4 Bxe4 9. Qa4+ Nc6 10. Qxe4 O-O 11. Bd3 Nf6 12. Bxf6 Qxf6 13. Qxh7# {1-0 (13) Whittaker,I (2085)-Dunn,J (1529) ICCF 2019}) 7. dxe6 Bxe6 8. Qc2 Nbd7 9. Be2 c5 10. O-O Qe7 11. Nc3 h6 12. a3 Ba5 13. Rac1 Rac8 14. Qa4 Bb6 15. Ne4 a6 16. Nxf6+ Nxf6 17. Qh4 {Mosshammer,M (1891)-Taras,I (1764) ICCF 2012 1/2}) (5... Nc6 6. a3 dxc4 7. Bxc4 Bd3 8. Qb3 Bxc4 9. Qxc4 Bd6 10. Nc3 O-O 11. d4 Ne7 12. O-O Ned5 13. Na4 Nb6 14. Nxb6 axb6 15. Rfd1 Qe7 16. Qc2 b5 17. e4 {Rajala,O (1861)-Saharinen,P (1953) ICCF 2007 0-1 (82)}) (5... dxc4 6. Bxc4 c6 7. b5 a6 8. a4 cxb5 9. axb5 a5 10. O-O Nbd7 11. Na3 Bb4 12. Be2 O-O 13. Nh4 Ne4 14. Nxf5 exf5 15. Nc2 Bd6 16. d3 Nec5 17. Na3 {Müller,D (2379)-Lelgemann,L (2183) ICCF 2016 1/2 (38)}) (5... Be7 6. Nc3 O-O 7. a3 h6 8. Be2 dxc4 9. Ne5 Nbd7 10. Nxc4 c6 11. O-O b5 12. Na5 Qb6 13. Rc1 Rac8 14. d4 Rfd8 15. Qe1 Bf8 16. Nb1 Nd5 17. Nb3 {Liushnin,K (2307)-Alberny,M (2107) ICCF 2013 1-0 (46)}) 6. c5 Be7 (6... a5 7. a3 axb4 (7... c6 8. Nc3 Be7 9. Be2 O-O 10. O-O Bg4 (10... axb4 11. axb4 Rxa1 12. Qxa1 Bg4 13. d4 Qa8 14. h3 Bh5 15. b5 Ne4 16. Qc1 Qc8 17. Qc2 Nxc3 18. Bxc3 Bxf3 19. gxf3 Qc7 20. b6 Qb8 21. Bd3 g6 22. f4 { Kazmierczuk,Z (2048)-Beveridge,C (1963) ICCF 2013 1-0 (49)}) 11. d4 Qc7 12. h3 Bh5 13. Nd2 Bxe2 14. Nxe2 b5 15. Qc2 Rfb8 16. Bc3 a4 17. Rad1 Nf8 18. Nf3 Ne4 19. Be1 {Braak,J (2000)-Boreisis,V (2002) ICCF 2019 1/2 (35)}) 8. axb4 Rxa1 ( 8... Be7 9. Nc3 c6 10. Nh4 Bg4 11. Rxa8 Bxd1 12. Rxd8+ Bxd8 13. Nxd1 Ke7 14. f4 Bc7 15. Nf3 Ra8 16. Bd3 g6 17. Nf2 {1-0 (17) Gierth,K (2204)-Azzoug,S (1664) ICCF 2010}) 9. Bxa1 Be7 (9... Qa8 10. Nc3 Qa3 11. Nb5 (11. Nd4 Qxb4 12. Nxf5 exf5 13. d4 g6 14. Bd3 c6 15. O-O b6 16. cxb6 Bd6 17. Qa4 {Muri,H (2410) -Versili,M (2393) ICCF 2008 1/2 (31)}) 11... Qxb4 12. Nxc7+ Kd8 13. Nb5 Bxc5 14. Be2 Qb1 15. Qxb1 Bxb1 16. O-O Bf5 17. Rc1 Bg4 18. Bxf6+ gxf6 19. d4 Bb6 20. Nd6 Ke7 21. Nc8+ {Green,P (2122)-Kudryavtsev,N (2218) ICCF 2017 1/2 (27)}) 10. Be2 h6 11. O-O O-O 12. Nd4 Bh7 13. f4 c6 14. Nc3 Re8 15. Na4 Qb8 16. Qb3 e5 17. fxe5 Nxe5 18. Nf5 {Heß,H (2301)-Ghysens,D (2425) ICCF 2015 1/2 (37)}) 7. Nd4 Bg6 8. c6 bxc6 9. Nxc6 Qc8 10. Nxe7 Kxe7 11. Ba3 Kf8 12. Ba6 Qd8 13. O-O Kg8 14. d4 h6 15. Nd2 Kh7 16. Rc1 Rb8 {Ilzig,G-Hilton,S (1650) ICCF 2016 1-0 (31)}) (5. Be2 h6 6. O-O Bxb4 7. h3 Nbd7 8. a3 Bd6 9. d3 O-O 10. Nh2 e5 11. Nd2 c5 12. Ng4 Nxg4 13. Bxg4 {1-0 (13) Strobehn,A (1380)-Bujko,J ICCF 2015}) 5... c5 (5... a5 6. b5 Nbd7 (6... c5 7. bxc6 bxc6 8. c4 Be7 9. Be2 Nbd7 10. O-O O-O 11. Nc3 h6 12. Rc1 Rb8 13. Na4 Ne4 14. d3 Nec5 15. Nxc5 Rxb2 16. Nxd7 Qxd7 17. Ne5 Qd6 18. f4 {Thomsen,J-Smith,P ICCF 2012 0-1}) (6... Bd6 7. c4 (7. Be2 h6 8. d4 Nbd7 9. c4 c5 10. cxd5 exd5 11. dxc5 Nxc5 12. Nc3 Bh7 13. g3 a4 14. O-O Be7 15. Ne5 O-O 16. Bf3 Nce4 17. Nxe4 Nxe4 18. Bg2 Ra5 {Engel,M (2300)-Bergner,M (2215) ICCF 2018 1/2 (58)}) 7... Qe7 8. d4 dxc4 9. Bxc4 Nbd7 10. O-O c5 11. bxc6 bxc6 12. Nbd2 O-O 13. Ne5 Rfc8 14. Be2 c5 15. Ndc4 Bc7 16. Bf3 Nxe5 17. dxe5 Ne4 18. Qa4 {Skerlík,S (2234)-Sparnacini,S (2182) ICCF 2019 1-0 (71)}) 7. c4 h6 (7... Bd6 8. d4 (8. Be2 h6 9. O-O O-O 10. d4 c5 11. cxd5 exd5 12. dxc5 Nxc5 13. a4 Rc8 14. Nd4 Bg6 15. Nd2 Nd3 16. Ba3 Bxa3 17. Rxa3 Nb4 18. Qa1 Nc2 19. Nxc2 { 1/2 (19) Skerlík,S (2245)-Chan,D (2195) ICCF 2020}) 8... c5 9. cxd5 (9. Be2 O-O 10. O-O a4 11. cxd5 exd5 12. Nc3 c4 13. Re1 h6 14. Nd2 Nb6 15. g3 Re8 16. Bf1 Qd7 17. Bg2 Bd3 18. f3 h5 19. f4 Ng4 20. Qf3 Re7 {Frydendal,O (1913)-Tseng,W (2120) ICCF 2009 0-1}) (9. bxc6 bxc6 10. Nbd2 a4 11. Be2 O-O 12. O-O h6 13. Bc3 Qe7 14. Ra2 c5 15. Qa1 Rfc8 16. dxc5 Bxc5 17. cxd5 exd5 18. Rc1 Bxe3 19. fxe3 Qxe3+ 20. Kf1 Ng4 {Skerlík,S (2295)-Struzka,V (2162) ICCF 2014 1/2 (39)}) 9... exd5 10. dxc5 Nxc5 11. Be2 O-O 12. Nc3 Re8 13. O-O a4 14. Nd4 Bg6 15. g3 { Böhnke,H (2089)-Oudheusden,W ICCF 2009 1/2 (62)} h6 16. Nf3 Bb8 17. Nh4 { 1/2 (17) Skerlík,S (2295)-Cuccumini,V (2192) ICCF 2014}) 8. Be2 Rc8 9. O-O Be7 10. Nc3 O-O 11. Rc1 Bd6 12. d4 c5 13. dxc5 Nxc5 14. cxd5 exd5 15. Nd4 Bg6 16. Na4 Nce4 17. b6 {Kural,A (2351)-Pezo,E (2293) ICCF 2014 1/2}) (5... Nbd7 6. c4 (6. d4 Bd6 7. c4 c6 8. Nbd2 O-O 9. Be2 Ne4 10. Nxe4 Bxe4 11. c5 Bc7 12. O-O f5 (12... Qf6 13. a4 Qh6 14. g3 Nf6 15. Nd2 Bf5 16. Re1 Qg6 17. Nf3 Qh6 18. Nd2 Qg6 {Ilzig,G (2264)-Dard,M (2205) ICCF 2017 1/2}) 13. g3 Bxf3 14. Bxf3 Qf6 15. Qe2 a6 16. a4 e5 17. b5 e4 {Secchi,D-Krakovský,P (2275) ICCF 2008 1/2 (43)}) ( 6. Be2 Bd6 (6... h6 7. d3 (7. O-O Bd6 8. c4 dxc4 9. Bxc4 O-O 10. d4 a5 11. b5 c5 12. bxc6 bxc6 13. Qe2 Rb8 14. Ra2 Ne4 15. Nbd2 Qc7 16. h3 a4 17. Ba1 Qa5 18. Nxe4 Bxe4 {Sánchez García,I-Zuñiga,I (2200) ICCF 2017 0-1 (26)}) 7... c5 8. bxc5 Bxc5 9. Nbd2 Be7 10. c4 Nc5 11. cxd5 Bxd3 12. dxe6 Nxe6 13. O-O O-O 14. Rc1 Bg6 15. Ne5 Bh7 16. Bc4 Qb6 17. Qb3 Rfc8 18. Qxb6 {Louro,E (2128)-Smit,F (2145) ICCF 2010 1/2}) 7. O-O (7. Nc3 h6 8. O-O c6 9. Nd4 Bh7 10. f4 O-O 11. Nb3 e5 12. f5 Qc7 13. d3 e4 14. h3 Rfe8 15. Qd2 Re7 16. Kh1 Bg3 17. a4 exd3 18. cxd3 Rae8 {Uecker,D (2392)-Jónsson,K (2156) ICCF 2011 1/2 (55)}) (7. Nh4 Bg6 8. Nxg6 hxg6 9. h3 a5 10. b5 Nc5 11. c4 Ng4 12. d3 dxc4 13. Bxg7 Rh7 14. Bd4 Qh4 15. Rf1 Nh2 16. Rh1 cxd3 17. Bxd3 Qg5 18. Bxc5 Bxc5 {Sowden,E (2291)-Splíchal, S (2156) ICCF 2007 0-1}) 7... O-O 8. Nh4 Re8 9. Nc3 c6 10. Nxf5 exf5 11. f4 a5 12. b5 Nb6 13. bxc6 bxc6 14. Bd3 g6 15. Rb1 Bc5 16. Ne2 Ne4 17. Bd4 Qd6 { Marconi,R (1992)-Hendri Sevano,R (1935) ICCF 2018 0-1 (47)}) 6... Be7 (6... dxc4 7. Bxc4 a5 (7... c5 8. Qb3 a6 9. O-O Be7 10. Be2 Qb6 11. d3 cxb4 12. Bd4 Qa5 13. Nbd2 bxa3 14. Qxb7 Rb8 15. Nc4 Rxb7 16. Nxa5 Rb5 17. Nc4 Rb3 18. Nfd2 Rxd3 19. Bxd3 {Jacewicz,G (2247)-Prado,L (2249) ICCF 2012 1-0 (55)}) 8. b5 Nb6 (8... Bd6 9. d3 O-O 10. Nbd2 Bg6 11. e4 Bf4 12. g3 Bh6 13. Qc2 Nb6 14. a4 Re8 15. Bb3 Nfd7 16. O-O Rc8 17. Bc3 Ra8 18. Rfe1 Qe7 19. Kg2 Rec8 20. Qb2 { Degterev,P (2545)-Sheretyuk,A (2414) ICCF 2008 1-0 (55)}) 9. Be2 Bd3 10. O-O Bc5 11. Ne5 Bxe2 12. Qxe2 O-O 13. Nc3 Nfd7 14. d4 Bd6 15. Nf3 Qf6 16. Rfe1 Qg6 17. e4 Rac8 18. Rad1 {Degterev,P (2460)-Chripko,L (2071) ICCF 2006 1/2 (45)}) 7. Be2 (7. cxd5 exd5 8. Be2 O-O 9. Nc3 h6 10. Qb3 c6 11. O-O a5 12. Nd4 Bg6 13. f4 Bd6 14. Bf3 Qe7 15. b5 Nc5 16. Qa2 Rac8 17. bxc6 bxc6 18. f5 {Cobham,M (2130)-Norman,N (2146) ICCF 2013 0-1 (42)}) 7... O-O 8. Nh4 dxc4 9. Nxf5 exf5 10. Qc2 c6 11. Bxc4 g6 12. O-O Nb6 13. Bb3 a5 14. bxa5 Rxa5 15. d3 Rc5 16. Bc3 Nbd5 17. d4 {Stapinski,R (1862)-Haak,G (2071) ICCF 2017 1/2 (45)}) (5... Bd6 6. c4 O-O 7. cxd5 exd5 8. Be2 Nbd7 9. d3 (9. Nd4 Bg6 10. O-O a5 11. f4 h6 12. bxa5 Rxa5 13. Nb5 Be7 14. N1c3 c6 15. Nd4 Bd6 16. d3 Re8 17. Qd2 Nc5 {Daatselaar,J (2203)-Van hentenryck,A (1689) ICCF 2006 0-1 (41)}) 9... a5 10. Nd4 Bg6 11. b5 c5 12. Nf3 Qc7 13. Nbd2 a4 14. Nh4 Rfe8 15. Nxg6 hxg6 16. g3 Qb6 17. Rb1 { Stapinski,R (1929)-Frenzel,L (2006) ICCF 2009 1/2 (36)}) (5... h6 6. c4 Be7 7. cxd5 exd5 8. Be2 Nbd7 9. O-O O-O 10. d3 a5 11. b5 Bg6 12. h3 Bd6 13. Nh2 a4 14. Nc3 c5 15. Nxa4 d4 16. exd4 cxd4 17. Bxd4 {Bes,R (1844)-Leijen,P (2158) ICCF 2020 0-1 (32)}) (5... Be7 6. Be2 {1-0 (6) Taulien,H-Watorek,M (2203) ICCF 2007} h6 7. c4 c6 8. Nc3 O-O (8... Nbd7 9. Rc1 a5 10. b5 Qb6 11. Na4 Qc7 12. cxd5 exd5 13. bxc6 bxc6 14. Nd4 Bh7 15. Nxc6 Qd6 16. Nxe7 Qxe7 17. Bxf6 Qxf6 18. Bb5 Rd8 19. Nc5 Bf5 20. Qa4 {Mai,W (2040)-Scott,R (1623) ICCF 2011 1-0 (33)}) 9. O-O dxc4 10. Bxc4 b5 11. Be2 a5 12. Qb3 Qd6 13. bxa5 Rxa5 14. d3 Bxd3 15. Rfd1 Bc4 16. Bxc4 bxc4 17. Qxc4 {Müller,D (2309)-Matúsek,J (2245) ICCF 2017 1/2}) 6. c4 (6. bxc5 Bxc5 7. Bd3 (7. Be2 Nbd7 8. O-O Qc7 9. Nh4 Be4 10. d3 Bg6 11. Nd2 Bd6 12. g3 b5 13. c4 bxc4 14. dxc4 Rb8 15. Bxf6 Nxf6 16. Rc1 Qe7 17. cxd5 exd5 {Blechar,M (2230)-Young III,W ICCF 2007 1-0 (44)}) (7. Bb5+ Nbd7 8. O-O O-O 9. d4 Qb6 10. a4 Bd6 11. Ba3 Rfc8 12. Bd3 Bxd3 13. cxd3 Rc7 14. Bxd6 Qxd6 15. Na3 a6 16. Qb3 Rac8 17. Qb2 Qc6 18. Nb1 b6 {Balañá Romero,R (1770)-Monreal Godina, J (1860) ICCF 2010 0-1 (72)}) 7... Bxd3 8. cxd3 O-O 9. O-O Nc6 10. Nc3 Rc8 11. a4 Be7 12. Ne2 Nd7 13. Qb1 Bd6 14. Ned4 Nxd4 15. Bxd4 b6 16. Bc3 a6 17. Rc1 Re8 {Bolshunov,E-Sarok,P (2036) ICCF 2011 0-1 (35)}) 6... dxc4 (6... cxb4 7. axb4 Nc6 8. Qa4 Be7 9. Bc3 O-O 10. b5 Nb8 11. d4 dxc4 12. Ba5 Qd6 13. Bxc4 Nbd7 14. O-O Rfc8 15. Nbd2 Nb6 16. Bxb6 Qxb6 17. Rfc1 {Kappelhof,W (2338)-Rotte,P (1780) ICCF 2020 1-0}) 7. bxc5 (7. Bxc4 cxb4 8. Qa4+ (8. Nd4 Bg6 9. axb4 Nbd7 10. Qb3 Qb6 11. Ba3 Be7 12. Nc3 O-O 13. O-O Rfc8 14. f4 Ne4 15. Nxe4 Bxe4 16. Rfc1 h6 17. f5 Rxc4 18. Qxc4 exf5 19. Qc7 Qg6 {Secchi,D-Popov,V (2245) ICCF 2008 1/2}) 8... Nbd7 9. axb4 Bd6 10. O-O a6 11. Nc3 O-O 12. Be2 h6 13. b5 a5 14. Ba3 Nb6 15. Qb3 a4 16. Qb2 Qd7 17. Bxd6 Qxd6 18. Ra3 Ne4 {Kural,A (2394)-Bernal Varela, N (2411) ICCF 2019 1/2}) 7... Bxc5 8. Bxc4 O-O 9. O-O Nc6 10. d4 Bd6 11. Nc3 Qb6 12. Qe2 h6 13. Rfc1 Rac8 14. Na4 {Kural,A (2409)-Elent,M (2428) ICCF 2020 1/2 (34)}) (2... Bg4 3. h3 (3. c4 e6 (3... c6 4. Qb3 Nf6 5. e3 e6 6. h3 Bh5 7. Be2 dxc4 8. Qxc4 Bxe2 9. Nxe2 b5 10. Qb3 Qd5 11. Qxd5 Nxd5 12. a3 a5 13. bxa5 Rxa5 14. Nbc3 Nb6 15. d3 {Schmidt,K (2155)-Gutiérrez Dopino,J (2242) ICCF 2015 1/2 (57)}) 4. Qb3 (4. h3 Bf5 5. cxd5 exd5 6. Nf3 Nf6 7. e3 Nbd7 8. b5 Nc5 9. Be2 Nd3+ 10. Bxd3 Bxd3 11. Nc3 Bd6 12. Qb3 Be7 13. a4 O-O 14. Ne5 Bf5 15. O-O a6 {Degterev,P (2530)-Moser,R (2287) ICCF 2007 1/2}) 4... Nf6 5. e3 Nbd7 6. a3 c6 7. h3 Bf5 8. Nf3 Bd6 9. c5 Bc7 10. Nh4 O-O 11. Be2 Qe7 12. Nc3 Ne5 13. Nxf5 exf5 14. O-O Ng6 {Daatselaar,J (2177)-Vegjeleki,A (2195) ICCF 2009 0-1 (50)}) ( 3. Qc1 Nd7 (3... Nf6 4. e3 Nbd7 5. c4 e5 6. b5 d4 7. exd4 Bb4 8. h3 Bh5 9. a3 Ba5 10. Be2 exd4 11. Bxh5 Nxh5 12. Bxd4 Nf4 13. Qc2 Nf8 14. Qe4+ N8e6 15. Nf3 { Ziemak,K-Buss,M (2197) ICCF 2019 0-1}) 4. c4 c6 5. Nf3 Bxf3 6. gxf3 e5 7. cxd5 cxd5 8. a3 a5 9. Nc3 Ngf6 10. Rg1 axb4 11. axb4 Rxa1 12. Qxa1 d4 13. Ne4 Nd5 14. e3 Be7 {Kural,A (2249)-Attard,I (2008) ICCF 2010 1-0 (30)}) (3. a3 Nf6 4. h3 (4. f3 Bf5 5. e3 e6 6. f4 Be7 7. Nf3 O-O 8. Be2 a5 9. b5 Ne4 10. O-O a4 11. Nd4 Bf6 12. g4 Bg6 13. f5 exf5 14. gxf5 Bxd4 {Taulien,H-Fichtner,B (2140) ICCF 2006 1/2}) 4... Bh5 5. Nf3 e6 6. c4 Bxf3 7. exf3 d4 8. Qa4+ Nc6 9. d3 Be7 10. Nd2 O-O 11. g3 a6 12. Qc2 e5 13. Bg2 Qd7 14. O-O Rfe8 {Cooper,R (2063)-McMahon, F (1941) ICCF 2013 1-0 (81)}) (3. f3 Bf5 4. e3 e6 5. h4 h5 6. a3 Be7 7. g3 Nf6 8. Bh3 Qd6 9. Kf2 Bh7 10. Ne2 O-O 11. Nbc3 Nbd7 12. Nd4 Ne5 13. Na4 Nc4 14. Bc3 e5 {Wilshusen,H (1393)-Mões Joaquim,C (1931) ICCF 2019 0-1 (37)}) 3... Bh5 ( 3... Bf5 4. d3 (4. e3 Nf6 5. d4 e6 6. b5 a6 7. a4 c5 8. c4 cxd4 9. Bxd4 Ne4 10. Nd2 Bb4 11. Ngf3 O-O 12. Be2 dxc4 13. Bxc4 axb5 14. Bxb5 Nc6 15. O-O Nxd2 { Odermatt,C-Santamaría Navarro,F (1807) ICCF 2013 0-1}) (4. Nf3 e6 5. a3 Nf6 6. e3 Bd6 7. g4 Be4 8. d3 Bg6 9. Nbd2 O-O 10. c4 c6 11. g5 Nh5 12. Rg1 Nd7 13. Be2 f6 14. c5 Bc7 15. Nh4 Nf4 {Louro,E (1866)-Azzi,R (1521) ICCF 2019 1-0 (38)}) 4... e6 5. a3 a5 6. Nd2 Nf6 7. Ngf3 h6 8. Bc3 axb4 9. axb4 Nbd7 10. e3 Bd6 11. Be2 O-O 12. Rxa8 Qxa8 13. Nb3 e5 14. O-O b6 15. Qa1 {Frenzel,L (2013)-Sánchez de Ybargüen Gutiérrez,L (2245) ICCF 2013 1/2}) (3... Bd7 4. Nf3 Nf6 5. e3 e6 6. a3 Bd6 7. Be2 O-O 8. O-O a5 9. b5 c6 10. a4 cxb5 11. axb5 Bc8 12. c4 b6 13. d4 Nbd7 14. Nbd2 Bb7 15. Ne5 {Baumann,W (2052)-Kovalsky,S (2237) ICCF 2009 1/2 (34)}) 4. Nf3 (4. c4 dxc4 (4... e6 5. Qb3 c6 6. cxd5 cxd5 7. d3 Nf6 8. g4 Bg6 9. Nf3 Bd6 10. Bg2 O-O 11. Nbd2 Nc6 12. b5 Na5 13. Qd1 Nd7 14. h4 h5 15. Bh3 Be7 16. Rg1 {Buczinski,H (1988)-Mehlhorn,U (2392) ICCF 2018 0-1 (44)}) 5. g4 Bg6 6. Bg2 c6 7. Na3 c3 8. Bxc3 Nf6 9. Nf3 e6 10. Nc4 Nbd7 11. d3 Nd5 12. Bd2 Be7 13. Rb1 O-O 14. O-O Qc7 15. Qc1 f6 {Jiménez Ariza,J (2373)-Roig García,J (1783) ICCF 2014 1-0}) (4. g4 Bg6 5. Bg2 c6 6. e3 Nd7 7. Nf3 e6 8. O-O Ngf6 9. a3 h6 10. Nc3 Bd6 11. Nh4 Bh7 {0-1 (11) Thomsen,J (1587)-Brown,K ICCF 2014}) 4... e6 5. e3 (5. c4 Nf6 6. Qa4+ Nbd7 7. g4 Bg6 8. g5 Nh5 9. cxd5 exd5 10. Nc3 c6 11. b5 Nb6 12. Qg4 Nc4 13. Bc1 Bb4 14. bxc6 bxc6 15. e3 Bxc3 16. dxc3 Qa5 { Gavrijski,D (2143)-Vegjeleki,A (2195) ICCF 2009 0-1 (44)}) 5... Nf6 6. a3 a5 7. b5 Nbd7 8. c4 dxc4 9. Bxc4 Be7 10. Be2 O-O 11. O-O b6 12. Nd4 Bxe2 13. Qxe2 Bd6 14. d3 {Dolgy,Y (1989)-Dewald,H (1894) ICCF 2012 1-0 (36)}) (2... Nc6 3. b5 (3. a3 f6 4. e3 g6 5. c4 Be6 6. cxd5 Bxd5 7. Nc3 Bf7 8. d4 Qd6 9. d5 Nd8 10. Nb5 Qd7 11. Nxc7+ Qxc7 12. Bb5+ Nc6 13. dxc6 bxc6 14. Qf3 Bd5 {Barendswaard,W (2111)-Vaessen,J (1143) ICCF 2020 1-0}) 3... Na5 4. d3 (4. e3 Nf6 5. Nf3 c5 6. bxc6 bxc6 7. Be2 e6 8. O-O Bc5 9. d4 Bd6 10. Nbd2 O-O 11. c4 Rb8 12. Rb1 Qb6 13. c5 Qd8 14. cxd6 Qxd6 15. Qa4 Nh5 {Fels,B (2133)-Scragg,C ICCF 2012 1-0 (25) }) 4... e5 5. Bxe5 Nf6 6. Nf3 a6 7. bxa6 Rxa6 8. e3 Nc6 9. Bb2 Rb6 10. Qc1 Bg4 11. Be2 Bb4+ 12. c3 Bd6 13. O-O Bxh2+ 14. Kxh2 {Wilson,N (1578)-Hotárek,J (1530) ICCF 2015 0-1}) (2... Nd7 3. c4 dxc4 4. e4 e6 5. b5 Ngf6 6. Bxc4 Nxe4 7. Nf3 a6 8. bxa6 bxa6 9. Nc3 Ng5 10. O-O Rb8 11. Rb1 Nxf3+ 12. Qxf3 Ne5 13. Qe2 Nxc4 14. Qxc4 {Bonatti,A (2024)-Wallner,J (2333) ICCF 2006 0-1}) (2... f6 3. c4 (3. d4 Nc6 4. b5 Na5 5. e3 Bd7 6. a4 c6 7. Na3 e5 8. c4 Bb4+ 9. Ke2 dxc4 10. Nc2 c3 11. Ba3 Bxa3 12. Nxa3 Qe7 13. Ke1 Qb4 14. Nc2 Qd6 {Bray,P-Jones,S ICCF 2017 0-1 (61)}) (3. Nf3 e5 4. b5 Be6 5. g3 Bd6 6. Bg2 Ne7 7. O-O O-O 8. d3 c6 9. a4 Qd7 10. Ba3 Bxa3 11. Nxa3 d4 12. Nd2 Nd5 13. Ne4 f5 14. Nc5 Qe7 {Yeung,C (1642)-Zylla,J (2267) ICCF 2008 0-1 (26)}) 3... c6 4. e3 e5 5. Qb3 a5 6. bxa5 Qxa5 7. Bc3 Qd8 8. d4 exd4 9. Bxd4 Nh6 10. Nf3 Nf5 11. Bb2 Nd7 12. cxd5 Nc5 13. Qc2 Qxd5 14. Nc3 {Daatselaar,J (2074)-Zylla,J (2267) ICCF 2008 1/2}) (2... d4 3. a3 a5 4. b5 b6 5. Nf3 c5 6. d3 Nf6 7. Nbd2 Nbd7 8. Nc4 Bb7 9. e3 Bxf3 10. Qxf3 e5 11. exd4 Be7 12. dxe5 Ng8 13. g3 f6 14. e6 {Richardson,D (1787) -Barraso,V ICCF 2012 1-0 (27)}) 3. a3 (3. b5 Qb4 4. Ba3 Qxb5 5. e4 Qa5 6. exd5 Nf6 7. c4 c6 8. dxc6 Qe5+ 9. Be2 Qxa1 10. Qb3 Nxc6 11. Qb2 Qxb2 12. Bxb2 Bf5 13. Nc3 e5 14. Nf3 O-O-O {Hasler,U (1683)-Gatto,C (2204) ICCF 2005 0-1}) 3... e5 (3... Nf6 4. Nf3 Nbd7 5. e3 a5 6. bxa5 (6. b5 e5 7. d4 e4 (7... exd4 8. Bxd4 c5 9. bxc6 bxc6 10. c4 Ba6 11. Nbd2 Be7 12. Qc2 O-O 13. Be2 Nc5 14. O-O Nfd7 15. Rfd1 {Skerlík,S (2241)-Cuccumini,V (2221) ICCF 2017 1/2 (26)}) 8. Nfd2 Nb6 9. c4 dxc4 10. Nxc4 Nxc4 11. Bxc4 Be6 12. Qc2 Be7 13. Nd2 Bxc4 14. Qxc4 O-O 15. a4 Qd7 16. Ba3 Bxa3 17. Rxa3 Rfe8 {Schmidt,K (2155)-Jeute,V (2232) ICCF 2015 1/ 2 (39)}) 6... e5 7. d4 exd4 8. Nxd4 c6 9. Nb3 Be7 10. c4 O-O 11. N1d2 Ne5 12. Qc2 Be6 13. c5 Qc7 14. Be2 Rfe8 15. O-O {Blittkowsky,R (2095)-Cuccumini,V (2118) ICCF 2013 1-0 (27)}) (3... a5 4. b5 (4. Nc3 e5 5. e3 Nd7 6. Nb5 Qb6 7. c4 dxc4 8. Bxc4 c6 9. Nc3 axb4 10. axb4 Rxa1 11. Qxa1 Qxb4 12. Qa2 Nh6 13. Nge2 Be7 14. Ng3 b5 15. Bd3 O-O {Hansen,R-Krett,V (1798) ICCF 2014 0-1 (38)}) 4... c6 5. e3 Bf5 6. Nc3 Nd7 7. Nf3 h6 8. Be2 e5 9. d4 e4 10. Nd2 Be7 11. Na4 Qg6 12. g4 Be6 13. h3 h5 14. Rg1 Ngf6 15. g5 {Priest,S (1948)-Müller-Töpler,M (1924) ICCF 2016 0-1}) 4. e3 (4. Nf3 Nd7 (4... e4 5. Nd4 Nf6 (5... a5 6. Nc3 c6 7. bxa5 Qg6 8. e3 Bd6 9. d3 Nf6 10. dxe4 Nxe4 11. Nxe4 dxe4 12. h4 h5 13. Nb3 O-O 14. Qd4 Bg4 15. Nc5 Rxa5 16. Nxb7 Be5 17. Qb4 {Daatselaar,J (2203) -Gagliardi,V (2044) ICCF 2006 0-1 (50)}) 6. c4 dxc4 7. e3 c5 8. bxc5 Qxc5 9. Qc2 Nc6 10. Bxc4 Ne5 11. Bb5+ Bd7 12. Qxc5 Bxc5 13. Nf5 O-O 14. Bxe5 Bxf5 15. Bxf6 gxf6 16. g4 {Visser,A (1987)-Dolgy,Y (1989) ICCF 2012 1/2 (53)}) 5. e3 (5. d3 Ngf6 6. e3 c6 7. Be2 g6 8. O-O Bg7 9. c4 O-O 10. Nbd2 Re8 11. e4 b6 12. Re1 d4 13. Bf1 c5 14. b5 Nf8 15. g3 Bh6 16. Bg2 Nh5 {Etmans,M (2013)-Jong,P (2285) ICCF 2006 0-1 (54)}) 5... c6 (5... Ngf6 6. c4 (6. Be2 a5 7. bxa5 Rxa5 8. d4 e4 9. Ne5 Qb6 10. Qc1 Nxe5 11. dxe5 Nd7 12. O-O Qe6 13. c4 Nxe5 14. cxd5 Rxd5 15. Nc3 Rc5 16. Qb1 f5 17. Nb5 Bd7 {Ilzig,G-Knöppel,B (2030) ICCF 2016 1-0 (51)}) 6... c6 (6... e4 7. c5 Qe7 8. Nd4 Ne5 9. d3 (9. Nb5 a6 10. Qa4 Nc6 11. Bxf6 gxf6 12. Nd4 Bd7 13. Nxc6 Bxc6 14. b5 Bd7 15. c6 bxc6 16. bxc6 Be6 17. Nc3 Bg7 18. Qa5 f5 19. Rb1 Qd8 20. Rb7 O-O {Gierth,K (2204)-Tobella Torras,J (2045) ICCF 2010 0-1 (55)}) 9... exd3 10. Bxd3 g6 11. Be2 Bg7 12. O-O O-O 13. Qc2 Bd7 14. Nd2 a6 15. a4 Nc6 16. Nxc6 Bxc6 17. Bd3 Ng4 18. Bxg7 {Daatselaar,J (2203) -Sivic,K (2229) ICCF 2006 0-1 (60)}) 7. Nc3 (7. cxd5) 7... Be7 8. cxd5 Nxd5 9. Bc4 (9. Qc2 a5 10. b5 O-O 11. d4 exd4 12. Nxd4 Ne5 13. Nxd5 cxd5 14. Be2 Bd7 15. Nf5 Bxf5 16. Qxf5 Nc4 17. Bxc4 dxc4 18. Qg4 Qg6 19. Qxg6 fxg6 20. Ke2 a4 { Wantoch-Rekowski,J (2246)-Alferov,V ICCF 2008 1/2 (48)}) 9... Nxc3 10. Bxc3 e4 11. Nd4 Ne5 12. Be2 Qg6 13. g3 Bf6 14. O-O Bh3 15. Re1 h5 16. Nb3 h4 17. Nc5 { Visser,A (1997)-Kos,I ICCF 2012 0-1}) 6. c4 e4 7. c5 (7. Nd4 dxc4 8. Bxc4 Ne5 9. Be2 Qg6 10. Kf1 Bd6 11. f4 Nd3 12. Bxd3 exd3 13. Nf3 Nf6 14. Bxf6 Qxf6 15. Nc3 Qg6 16. Kf2 O-O 17. Rf1 Re8 18. Kg1 Bg4 {Etmans,M (2029)-Jong,P (2285) ICCF 2005 0-1 (42)}) 7... Qg6 8. Nh4 Qg5 9. g3 Ne5 10. f4 exf3 11. Nxf3 Nxf3+ 12. Qxf3 Be7 13. Bg2 Nf6 14. O-O h5 15. h4 Qg6 {Szabo,A (2304)-Gusan,B (2173) ICCF 2005 0-1 (45)}) 4... Be6 (4... Nf6 5. Nf3 (5. c4 dxc4 6. Bxc4 Be6 7. Be2 Be7 8. Nc3 c6 9. Nf3 Nbd7 10. d3 O-O 11. O-O Rfd8 12. Qc2 Nd5 13. Ne4 Qc7 14. Neg5 Bxg5 15. Nxg5 Nf8 16. Nf3 f6 {Kural,A (2354)-Hatipoglu,M (1910) ICCF 2014 1-0 (55)}) 5... e4 6. Nd4 Nc6 (6... Be7 7. c4 dxc4 8. Bxc4 a5 (8... O-O 9. Nc3 a5 10. b5 c5 11. Nde2 Nbd7 12. O-O Ne5 13. Ba2 Rd8 14. Bc1 Be6 15. Qc2 Nd3 16. Bb2 c4 17. Nd4 Ng4 18. g3 Nxb2 19. Qxb2 f5 20. a4 {Stasiak,W-McWade,P ICCF 2008 0-1}) 9. b5 Nbd7 10. f4 Nb6 (10... Nc5 11. O-O O-O 12. a4 Nd5 13. Bxd5 Qxd5 14. Nc3 Qd8 15. Ba3 f5 16. g4 g6 17. Qc2 Nd3 18. Bxe7 Qxe7 19. Nd5 Qf7 20. Nxc7 Rb8 21. b6 fxg4 22. Qc3 {Visser,A (1987)-Cuccumini,V (2062) ICCF 2012 1-0 (27)}) 11. Be2 O-O 12. O-O Qd7 13. Nc3 Bd6 14. g4 Qe7 15. g5 Nfd5 16. Nxd5 Nxd5 17. Bc4 Nb6 18. Bb3 {Fagerbekk,E (2189)-Almarza Mato,C (2148) ICCF 2013 1-0}) ( 6... a5 7. b5 Nbd7 8. Nc3 (8. c4 dxc4 9. Bxc4 Qc5 10. Be2 Qg5 11. O-O Nc5 12. f4 Qg6 13. Kh1 Bg4 14. Qc2 Bxe2 15. Nxe2 Bd6 16. Bxf6 gxf6 17. Nbc3 Rg8 18. g3 h5 19. Rg1 f5 {Skerlík,S (2306)-Loginov,A (2377) ICCF 2011 0-1 (52)}) 8... Nc5 9. f4 a4 10. Be2 Be7 11. O-O O-O 12. Qe1 Bd7 13. Rb1 h6 14. Qg3 Qb6 15. Nd1 Kh7 16. Nf2 Qd6 17. Bc3 Rfe8 18. Nh3 {Nicotera,A-Prencipe,G ICCF 2011 1/2 (43)}) ( 6... Bg4 7. Be2 Bxe2 8. Qxe2 Nbd7 9. O-O c6 10. Nc3 a5 11. f3 exf3 12. gxf3 Nb6 13. e4 Qe5 14. Rf2 dxe4 15. Nxe4 Nxe4 16. fxe4 Na4 17. Nxc6 Qxb2 18. Qc4 { Fels,B (2138)-Niewold,J (1744) ICCF 2011 1-0}) 7. c4 (7. Nb5 Qd8 8. Bxf6 gxf6 9. d3 a6 10. N5c3 exd3 11. Bxd3 Ne5 12. Ne2 Rg8 13. Nf4 Bg4 14. Be2 c6 15. Bxg4 Rxg4 16. O-O Qd7 17. Nc3 O-O-O 18. f3 Rg8 {Nicotera,A-Cuccumini,V ICCF 2011 0-1 (90)}) (7. Nxc6 bxc6 8. c4 Be7 9. d4 O-O 10. c5 Qe6 11. h3 a5 12. Qa4 Nh5 13. Nc3 Bh4 14. bxa5 f5 15. g3 Bxg3 16. fxg3 Nxg3 17. Rg1 f4 18. O-O-O Nxf1 { Morley,P (2245)-Almarza Mato,C (2083) ICCF 2010 1-0 (37)}) (7. d3 Nxd4 8. Bxd4 Be7 9. Nd2 O-O 10. c4 Bf5 11. dxe4 dxe4 12. c5 Qd7 13. Bc4 Rad8 14. O-O Nd5 15. f3 Bg5 16. Bxd5 Qxd5 17. h4 Be7 18. fxe4 Bxe4 {Wantoch-Rekowski,J (2245) -Almarza Mato,C (2179) ICCF 2008 1/2 (36)}) 7... dxc4 8. Bxc4 Be7 (8... Ne5 9. Be2 a5 10. Nc3 Nd3+ 11. Bxd3 exd3 12. O-O Be7 13. b5 O-O 14. Rc1 c5 15. bxc6 bxc6 16. Na4 Bd7 17. Nc5 Rfb8 18. Ba1 Rb6 19. e4 Bf8 20. Qf3 {Schmidt,K (2171) -Dzenis,J (2039) ICCF 2015 1/2 (41)}) 9. Qa4 (9. d3 exd3 10. Bxd3 O-O 11. Nd2 Rd8 12. O-O Nxd4 13. Bxd4 Ng4 14. Nf3 Bf6 15. Bc4 Be6 16. Bxf6 Nxf6 17. Qxd6 Rxd6 18. Be2 c6 19. Nd4 a5 20. bxa5 Rxa5 {Müller,D (2303)-Tödter,H (2192) ICCF 2017 1/2 (38)}) 9... O-O 10. Nxc6 bxc6 11. Qa5 Ng4 12. h3 Bf6 13. hxg4 Bxb2 14. Qh5 h6 15. Ra2 Be5 16. g5 {Bonetti,S-Skonieczna,M (2283) ICCF 2007 0-1 (49)}) ( 4... a5 5. b5 (5. c4 axb4 6. c5 Qg6 7. Bxe5 Bxc5 8. Ne2 Bd6 9. Nf4 Qh6 10. axb4 Rxa1 11. Bxa1 Bxf4 12. exf4 Ne7 13. g3 O-O 14. Bg2 Nec6 15. O-O Nxb4 16. Na3 c6 {Buczinski,H (2261)-Sorochan,D ICCF 2010 1/2 (30)}) 5... Nf6 6. c4 Bg4 7. Be2 Bxe2 8. Qxe2 Nbd7 9. d4 dxc4 10. Nf3 e4 11. Ne5 Nb6 12. Nd2 Qe6 13. O-O Bd6 14. Nexc4 Nxc4 15. Nxc4 O-O 16. Rfc1 {Kural,A (2349)-Liebert,E (2398) ICCF 2014 1-0 (40)}) (4... Na6 5. Bxa6 bxa6 6. Nf3 e4 7. Nd4 Nh6 8. O-O Bg4 9. f3 exf3 10. Nxf3 Qg6 11. Qe1 Bh3 12. Qf2 Qxc2 13. Bc3 Qg6 14. Ne5 Qf6 15. Qg3 Bf5 16. Ng4 {Strobehn,A (1380)-Sotoca Muñoz,A ICCF 2015 1-0 (26)}) 5. Nf3 Nd7 (5... f6 6. d4 e4 7. Nfd2 Nh6 8. c4 c6 9. cxd5 cxd5 10. Nb3 Qd7 11. Nc3 Nf5 12. Bb5 Nc6 13. O-O Bd6 14. Nc5 Bxc5 15. dxc5 O-O 16. Ne2 Rfd8 17. Nf4 {Baumann,W (2054) -Sladek,V (2085) ICCF 2009 1-0 (42)}) 6. d4 (6. Be2 c6 (6... Be7 7. O-O c6 8. d3 Ngf6 9. c4 O-O 10. Nbd2 h6 11. Qc2 Rfe8 12. Qc3 Bg4 13. h3 Bxf3 14. Nxf3 Bd8 15. Rfd1 Bc7 16. Qc2 Rac8 17. Rac1 Qe6 18. Nd2 {Hoch,H (2210)-Rudykh,S ICCF 2006 1/2 (50)}) 7. O-O f6 8. d4 e4 9. Nfd2 Qc7 10. c4 Bd6 11. g3 f5 12. cxd5 cxd5 13. Nc3 a6 14. Na4 Ne7 15. Nc5 Bf7 16. Rc1 Nc6 17. Nxd7 Qxd7 {Skerlík,S (2315)-Yazgeldiev,K (2325) ICCF 2012 1/2 (29)}) (6. d3) 6... e4 7. Nfd2 f5 ( 7... c6 8. c4 a6 (8... Ngf6 9. Nc3 Be7 10. Be2 O-O 11. O-O Bd8 12. cxd5 cxd5 13. Nb3 Bc7 14. g3 a6 15. Rc1 Bh3 16. Re1 Rfe8 17. f4 Rab8 18. Nc5 Nb6 19. Qb3 Nc8 20. a4 {Degterev,P (2475)-Ponomarev,A (2369) ICCF 2009 1-0 (60)}) 9. Be2 f5 10. Nc3 Ngf6 11. O-O g6 12. Qc2 dxc4 13. Nxc4 Qc7 14. Rfd1 Bg7 15. d5 cxd5 16. Nxd5 Bxd5 17. Rxd5 Nxd5 18. Bxg7 Rg8 19. Bb2 {Jacewicz,G (2238)-Moraes,F (1999) ICCF 2014 1/2 (52)}) 8. c4 c6 (8... Ngf6 9. c5 Qe7 10. Nc3 c6 11. b5 Qd8 12. a4 Be7 13. a5 cxb5 14. Bxb5 O-O 15. O-O a6 16. Be2 Qc7 17. Qb3 Bd8 18. f4 Qc6 19. Rfb1 Rf7 20. Qb4 {Fagerbekk,E (2215)-Mostowik,D (2190) ICCF 2013 1/2 (28)}) 9. Nc3 (9. cxd5 cxd5 10. Nc3 a6 11. Rc1 Ngf6 12. Be2 Nb6 13. Nb3 Be7 14. Nc5 Rb8 15. Ba1 O-O 16. a4 Bf7 17. a5 Nbd7 18. N3a4 Kh8 19. O-O Bd8 20. Bb2 Rg8 { Schmidt,K (2171)-Skorna,U (2233) ICCF 2015 1/2 (45)}) 9... Ngf6 10. cxd5 Bxd5 11. Nc4 Qe6 12. Qe2 Be7 13. Nxd5 {Osuna Osuna,F (1816)-Pearce,A (1784) ICCF 2008 1-0 (73)}) (1... a5 2. b5 (2. bxa5 e5 3. e4 Nf6 4. Nf3 Nxe4 5. Ba3 Bxa3 6. Nxa3 d5 7. h3 O-O 8. c4 d4 9. d3 {Jatkowski,S (1813)-Kurpnieks,V (2074) ICCF 2020}) 2... c6 (2... b6 3. e4 Bb7 4. Nc3 e5 (4... e6 5. Bb2 Nf6 6. e5 Ng8 7. f4 Ne7 8. Nf3 d6 9. Bd3 Nd7 10. exd6 cxd6 11. Qe2 Nc5 12. O-O Qc7 13. Rae1 Nxd3 14. Qxd3 O-O-O 15. Na4 Kb8 16. Bd4 {Hough,G (2009)-Sanders,P (2048) ICCF 2015 1-0}) 5. Bb2 Bc5 6. Nf3 Nf6 7. Nxe5 Qe7 8. Nd3 {1-0 (8) Santamaría Navarro,F (2027)-Brun,J (1997) ICCF 2005}) (2... e5 3. Bb2 (3. Nc3 d6 4. Nf3 Nf6 5. e4 g6 6. Bc4 Bg7 7. d4 Nbd7 8. dxe5 dxe5 9. Ng5 O-O 10. Ba3 h6 11. Bxf8 hxg5 12. Bxg7 Kxg7 13. Qd2 Nh5 14. O-O c6 {Domenche Redondo,F (1893)-Armenteros Generoso,P (1709) ICCF 2014 1-0}) 3... d6 4. c4 (4. d4 Nd7 5. e4 Ngf6 6. Nd2 exd4 7. Ngf3 Be7 8. Bd3 O-O 9. O-O Re8 10. Bxd4 Ng4 11. h3 Nge5 12. Qe2 Nxf3+ 13. Nxf3 Bf6 14. c3 b6 15. Rad1 Bb7 {Millstone,M (2447)-Peschardt,S (2085) ICCF 2008 1-0 (49)}) (4. e4 Nf6 5. Nc3 Nbd7 6. Nf3 g6 7. d4 exd4 8. Nxd4 Bg7 9. Bd3 Nb6 10. Qc1 Nfd7 11. Nf3 O-O 12. O-O Nc5 13. h3 Re8 14. Re1 Be6 15. Ne2 Bxb2 {Veiper,A (2300)-Taylor,T (2336) ICCF 2012 1/2 (63)}) 4... b6 (4... Nf6 5. g3 g6 6. Bg2 Bg7 7. Nc3 O-O 8. Nf3 Nbd7 9. d3 Nc5 10. Nd2 Rb8 11. O-O b6 12. Rb1 Bb7 13. Nb3 Bxg2 14. Kxg2 Nxb3 15. Qxb3 Nd7 16. e4 {Ott,P (1700)-Spencer,A (1690) ICCF 2020 1/2 (31)}) (4... f5 5. e3 Nf6 6. Nf3 e4 7. Nd4 g6 8. Be2 Bg7 9. Nc3 O-O 10. O-O Re8 11. Qb3 Kh8 12. a4 Nbd7 13. Qc2 Nc5 14. Nd5 Nxd5 15. cxd5 Qe7 16. Bc4 {Frydendal,O (1603)-Stensen,L (2159) ICCF 2015 0-1 (41)}) 5. Nc3 (5. e3 Bb7 6. Nf3 Be7 7. Be2 Nd7 8. O-O Nh6 9. Nc3 f5 10. Rc1 O-O 11. Qc2 Rc8 12. h3 Bf6 13. Nd5 Qe8 14. Rfd1 Qg6 15. d3 Nf7 16. Kh1 c6 {Gromov,S (2199)-Golubenko,A (2194) ICCF 2009 1-0 (72)}) 5... Bb7 6. Qc2 Nf6 7. e4 g6 8. Nge2 Bg7 9. d3 O-O 10. g3 Nh5 11. Nd5 c6 12. bxc6 Nxc6 13. Bg2 f5 14. O-O {Jamieson,I-McBride,J ICCF 2007 1/2 (27)}) (2... d5 3. a4 (3. Bb2 Nf6 4. e3 Nbd7 5. Nf3 e6 6. c4 Bd6 7. d4 c5 8. bxc6 bxc6 9. c5 Be7 10. Be2 Ne4 11. Nc3 f5 12. O-O O-O 13. Na4 Rb8 14. Rb1 Qc7 {Fagerbekk,E (2193)-Taksrud,V (2066) ICCF 2013 1/2 (46)}) (3. Nf3 Nf6 4. e3 e6 5. c4 Nbd7 6. Be2 dxc4 7. Qc2 Nd5 8. Qxc4 N7b6 9. Qd3 Qf6 10. Nc3 Nxc3 11. Bb2 Nba4 12. Bxc3 Nxc3 13. dxc3 b6 14. Rd1 Bd6 {Lilleeng,A (2148) -Taksrud,V (2089) ICCF 2012 0-1 (64)}) 3... e5 4. Bb2 (4. c3 Nf6 5. Nf3 Nbd7 6. g3 Bd6 7. Bg2 O-O 8. d3 c6 9. Ba3 Bxa3 10. Nxa3 e4 11. dxe4 Nxe4 12. bxc6 bxc6 13. Nd4 Qf6 14. Bxe4 dxe4 15. Qc2 e3 {Ott,P (1588)-Vieito Soria,L (1768) ICCF 2018 0-1 (28)}) 4... Nd7 5. e3 Ngf6 6. Be2 c6 7. Nf3 e4 8. Nd4 c5 9. Nf5 h5 10. h4 Nb6 11. Ng3 d4 12. d3 dxe3 13. fxe3 Bd6 14. Nxe4 {Louro,E (1904)-Pastor Alonso de Prado,A (2255) ICCF 2018 0-1 (39)}) (2... Nf6 3. Bb2 (3. a4 g6 4. Bb2 Bg7 5. Nf3 O-O 6. e3 d5 7. c4 c5 8. cxd5 Nbd7 9. Qc2 Nxd5 10. Bxg7 Kxg7 11. Bc4 Nb4 12. Qc3+ Nf6 13. O-O Kg8 14. d3 b6 {Krüger,J-Zylla,J (2226) ICCF 2006 1/2 (34)}) (3. Nc3 e5 4. e4 Bc5 5. a4 O-O 6. Nf3 d5 7. exd5 Nxd5 8. Nxd5 Qxd5 9. c4 Qd6 10. d3 Bf5 11. Be2 Nd7 12. Bb2 Rfe8 13. O-O f6 14. Bc3 e4 {Wright, D-Newberry,B ICCF 2006 0-1 (46)}) 3... g6 4. c4 (4. e3 Bg7 5. f4 O-O 6. Nf3 d5 7. Be2 c5 8. O-O Nbd7 9. a4 b6 10. c4 Bb7 11. cxd5 Bxd5 12. Qe1 Rc8 13. d3 c4 14. dxc4 Bxc4 15. Nd4 Bd5 {Gavrijski,D (2010)-Zylla,J (2226) ICCF 2006 1/2 (52) }) (4. e4 d6 5. Nf3 Bg7 6. Bc4 O-O 7. d3 e6 8. e5 Nd5 9. d4 Nd7 10. O-O N7b6 11. Be2 Nf4 12. a4 dxe5 13. dxe5 Qxd1 14. Bxd1 Nc4 15. Bc3 Rd8 {Cottarelli,F (2185)-Zylla,J (2226) ICCF 2006 1/2 (31)}) (4. Nf3 Bg7 5. e3 O-O 6. Be2 d5 7. O-O c5 8. c4 Nbd7 9. cxd5 Nxd5 10. Bxg7 Kxg7 11. Qc2 b6 12. Rd1 e5 13. d3 Qf6 14. Nbd2 Bb7 15. a3 Rad8 {Haznedaroglu,K (1990)-Zylla,J (2226) ICCF 2006 1/2}) 4... Bg7 5. d4 d5 6. c5 O-O 7. Nc3 Ne4 8. Nxe4 dxe4 9. Qd2 Nd7 10. Rc1 e5 11. d5 e3 12. Qxe3 Nf6 13. Rd1 Nxd5 14. Qg3 {Kubácek,J-Zylla,J (2226) ICCF 2006 0-1 (25)}) (2... c5 3. c4 (3. Nc3 d5 4. Nf3 Nf6 5. e3 Bg4 6. Be2 Nbd7 7. O-O e5 8. h3 Bxf3 9. Bxf3 e4 10. Be2 Ne5 11. Bb2 d4 12. Na4 Be7 13. Ba3 d3 14. cxd3 exd3 {Nelson,J (1816)-Burklow,R ICCF 2015 0-1 (38)}) (3. Bb2 d5 4. f4 e6 5. Nf3 Nf6 6. e3 Nbd7 7. c4 Nb6 8. Na3 Be7 9. Bd3 Ne4 10. O-O O-O 11. Bxe4 dxe4 12. Ne5 f6 13. Ng4 h5 14. Nf2 Qe8 {Nelson,J (1590)-Burklow,R (1523) ICCF 2016 1-0 (28)}) (3. e4 d6 4. Nf3 e6 5. Be2 Nf6 6. d3 Be7 7. O-O O-O 8. Qd2 Nbd7 9. Re1 d5 10. e5 Ng4 11. d4 cxd4 12. Bd1 f6 13. Nxd4 Nxf2 14. Qxf2 Bc5 {Walker,J (1968)-Vieito Soria,L (2020) ICCF 2006 1/2 (34)}) 3... b6 (3... Nf6 4. Bb2 e6 5. e3 d5 6. Nf3 (6. Be2 Bd6 7. Bxf6 Qxf6 8. Nc3 dxc4 9. Ne4 Qe7 10. Rc1 O-O 11. Rxc4 Nd7 12. d4 cxd4 13. Nxd6 Qxd6 {1/2 (13) Fels,B (2127)-Vieito Soria,L (1973) ICCF 2010}) 6... Nbd7 7. Be2 Be7 8. O-O O-O 9. d4 b6 10. cxd5 Nxd5 11. Nbd2 Bb7 12. Rc1 Rc8 13. Nc4 Qc7 14. Nfe5 Nxe5 15. dxe5 {Muri,H (2376) -Peschardt,S (2430) ICCF 2007 1-0 (35)}) 4. Nc3 d6 5. e4 Nf6 6. d3 Bb7 7. Be2 e6 8. f4 Nbd7 9. Bf3 Be7 10. Nge2 Rb8 11. O-O O-O 12. Bb2 Ne8 13. Qd2 Nc7 14. Rad1 {Baumann,W (2109)-Neijhof,R (2049) ICCF 2009 1/2 (89)}) (2... d6 3. e4 Nf6 4. Nc3 Nbd7 5. d4 e5 6. Nf3 Be7 7. Bd3 O-O 8. O-O exd4 9. Nxd4 Nc5 10. f3 Bd7 11. Bc4 Qc8 12. Be3 Be6 13. Nxe6 Nxe6 14. Rb1 {Stapinski,R (1909)-Zimmermann,J (1610) ICCF 2012 1-0}) 3. a4 (3. c4 d5 (3... cxb5 4. cxb5 d5 5. Nf3 Nf6 6. Nc3 Bg4 7. Ne5 h5 8. h3 Bf5 9. Bb2 Qd6 10. Na4 Nbd7 11. Nf3 e5 12. e3 Be7 13. Rc1 O-O 14. Be2 Rac8 15. O-O {Orlando,E (2059)-Dam,J (2075) ICCF 2019 (48)}) 4. bxc6 bxc6 5. cxd5 cxd5 6. Nf3 Nf6 7. e3 e6 8. Bb2 Nbd7 9. Nc3 Bc5 10. Na4 Bd6 11. Nd4 O-O 12. Rc1 Ne4 13. Bb5 Qh4 14. g3 Qh3 {Fels,B (2162)-Walther,J (2236) ICCF 2009 1/2}) 3... cxb5 4. axb5 b6 5. Bb2 Bb7 6. c4 (6. e3 Nf6 7. Nf3 e6 8. Be2 d5 9. Nc3 Bd6 10. d4 Nbd7 11. h3 Rc8 12. O-O O-O 13. Rc1 Bb8 14. Na4 Ne4 15. Ba3 Re8 16. c4 dxc4 17. Bxc4 h5 {Buczinski,H (1988)-Saevich,Y (1998) ICCF 2018 0-1 (31)}) (6. Nf3 d6 7. e3 Nd7 8. Be2 Ngf6 9. O-O e6 10. Nc3 Be7 11. Nd4 O-O 12. f4 Rc8 13. Bf3 d5 14. Na4 Ne8 15. Ra2 Nd6 16. d3 Qc7 17. Qa1 Bf6 { Giachè,G-Bäckström,M (2298) ICCF 2006 0-1}) 6... d5 7. e3 Nf6 8. Nf3 e6 9. Be2 Nbd7 10. O-O dxc4 11. Bxc4 Be7 12. Nd4 Bd6 13. Qe2 {Ilzig,G (2264)-Saevich,Y (1921) ICCF 2017 1-0 (44)}) (1... f5 2. Bb2 (2. e3 Nc6 3. Bb2 Nxb4 4. Qh5+ g6 5. Qh4 Nxc2+ 6. Kd1 Nxa1 7. Bxh8 h5 8. Qg3 Kf7 9. Nf3 Bg7 10. Bxg7 Kxg7 11. Nh4 Kf6 12. Qxg6+ Ke5 13. d4+ Ke4 {Dam,J (1639)-Vaessen,J (1656) ICCF 2017 1-0}) 2... Nf6 (2... e6 3. c4 (3. e3 Bxb4 4. Bxg7 Qg5 5. Bxh8 f4 6. Nf3 Qd8 7. Bd3 h6 8. Bg6+ Ke7 9. Nc3 Kd6 10. Qe2 Ne7 11. Ne4+ Kc6 12. Qc4+ {1-0 (12) Wilshusen,H (1393)-Vaessen,J (1233) ICCF 2019}) (3. e4 f4 (3... Nf6 4. e5 Ne4 5. d3 Ng5 6. a3 Nf7 7. d4 d6 8. Nd2 Be7 9. Ngf3 O-O 10. Be2 a5 11. b5 dxe5 12. Nxe5 Nxe5 13. dxe5 c6 14. a4 Qc7 15. Nc4 {Taulien,H-Sidenko,A (2260) ICCF 2007 1-0 (38)}) 4. Qh5+ Ke7 5. Nf3 g6 6. Qe5 Nf6 7. Qxf6+ Kd6 8. Qxd8 Nc6 9. e5+ Nxe5 10. Bxe5+ Kc6 11. Qxc7+ Kd5 12. Qc4# {1-0 (12) Braak,J (2010)-Vaessen,J (1143) ICCF 2020} ) 3... Nf6 4. b5 (4. e3 d5 5. Nf3 Bxb4 6. a3 Be7 7. Be5 c5 8. d4 Nc6 9. Be2 O-O 10. Nc3 Ne4 11. Nb1 Nxe5 12. Nxe5 Qa5+ 13. Nd2 cxd4 14. exd4 Bg5 15. Nef3 Bf4 { Tago,S (1601)-Castilla,L (1997) ICCF 2015 0-1}) 4... c6 5. a4 b6 6. e3 d5 7. Nf3 Bd6 8. d4 O-O 9. Nbd2 Ne4 10. Be2 Bb7 11. Ne5 Qc7 12. O-O Nd7 13. f4 Nxe5 14. fxe5 {Frydendal,O (1554)-Pedajas,A ICCF 2018 0-1 (26)}) (2... d6 3. e3 e5 4. d4 e4 5. c4 d5 6. Qb3 Nf6 7. Nh3 c6 8. Nc3 Be7 9. cxd5 cxd5 10. Nf4 O-O 11. Ncxd5 Nbd7 12. Nc7+ Kh8 13. Nxa8 b6 14. Ne6 {Hansen,R-Ong,A (1829) ICCF 2014 1-0 (26)}) 3. e3 (3. Nf3 e5 4. b5 e4 5. Nd4 d5 6. e3 c5 7. bxc6 Nxc6 8. Nxc6 bxc6 9. Be2 Bd6 10. O-O O-O 11. g3 Rb8 12. Qc1 Qe7 13. Nc3 Be6 14. Rb1 Ng4 { Hasler,U (1683)-Bassanini,M ICCF 2004 0-1 (25)}) 3... e6 4. b5 (4. a3 d5 5. f4 Be7 6. Nf3 O-O 7. c4 c6 8. Nc3 Ne4 9. Be2 Bh4+ 10. g3 Bf6 11. Qc2 Nd7 12. d3 Nxc3 13. Bxc3 dxc4 14. dxc4 c5 15. Kf2 Bxc3 {Stapinski,R (1777)-Aragonés Cerezo,G (2206) ICCF 2019 1/2 (32)}) (4. Nf3 Bxb4 5. Be2 d5 6. O-O Nc6 7. c4 Bd6 8. cxd5 exd5 9. Nc3 Qe7 10. Nb5 Bc5 11. d4 Bb6 12. a4 Ne4 13. Qb3 Be6 14. Ba3 Qd7 15. Ne5 Qd8 {Neumann,F (1516)-Dutt,B (1529) ICCF 2020 0-1 (77)}) 4... Be7 (4... d5 5. c4 c6 (5... Bd6 6. Nf3 O-O 7. Nc3 a6 8. a4 c5 (8... axb5 9. axb5 Rxa1 10. Qxa1 Nbd7 11. Ba3 Qe7 12. Bxd6 Qxd6 13. Be2 dxc4 14. Bxc4 Nb6 15. Bb3 Bd7 16. O-O Ra8 17. Qb2 Nbd5 18. Rb1 Kf8 19. Nxd5 exd5 20. g3 {Müller,D (2366)-Llagaria Vidal,E (2100) ICCF 2016 1-0 (41)}) 9. cxd5 exd5 10. Be2 Qe7 11. O-O Be6 12. Qc2 Nbd7 13. bxa6 bxa6 14. a5 Nb8 15. Qa4 Rc8 16. Qh4 Nfd7 17. Qxe7 {Schmidt,K (2171)-Llagaria Vidal,E (2154) ICCF 2015 1/2}) 6. a4 Bd6 7. Nf3 Nbd7 8. d4 O-O 9. c5 Bc7 10. Nbd2 Ne4 11. Be2 Qf6 12. O-O e5 13. Nxe5 Nxe5 14. dxe5 Bxe5 15. Bxe5 Qxe5 16. Nf3 {Frydendal,O (1839)-Llagaria Vidal,E (1994) ICCF 2010 0-1 (30)}) (4... a6 5. a4 d5 6. c4 axb5 7. axb5 Rxa1 8. Bxa1 Bd6 9. Nf3 O-O 10. Be2 Nbd7 11. O-O f4 12. Qc2 Qe7 13. Bb2 fxe3 14. dxe3 b6 15. Nbd2 Nc5 16. Ne5 {Skerlík,S (2234)-Arnold,G (2292) ICCF 2019 1/2}) 5. c4 (5. d4 d5 6. Nf3 O-O 7. Be2 Ne4 8. O-O Nd7 9. Nbd2 Ndf6 10. Ne5 Bd7 11. f3 Nd6 12. a4 c6 13. c4 cxb5 14. cxd5 Nxd5 15. Bxb5 Bxb5 16. axb5 Nxe3 {Bray,P-Morgans,J ICCF 2017 0-1 (46)}) 5... O-O 6. Nc3 (6. Nf3 a6 (6... b6 7. Nc3 c5 8. Be2 d5 9. d4 Bb7 10. O-O Ne4 11. Ne5 Nxc3 12. Bxc3 Qc7 13. dxc5 Bxc5 14. cxd5 Bxd5 15. Bf3 Bxf3 16. Qxf3 Nd7 17. Nxd7 Qxd7 18. a4 {Welti,M (2050)-Munoz,L (1821) ICCF 2010 1/2 (34)}) (6... d6 7. Nc3 Ne4 8. Be2 Bf6 9. d4 Nd7 10. O-O Ndc5 11. Nxe4 Nxe4 12. Nd2 d5 13. Nxe4 fxe4 14. a4 c6 15. Qb3 Rf7 16. f3 exf3 17. Rxf3 Bd7 18. Raf1 {Meara,P (1677)-Scaramuzzo,G (2007) ICCF 2018 1-0 (32)}) 7. a4 Bb4 ( 7... axb5 8. axb5 Rxa1 9. Bxa1 d6 10. Be2 Qe8 11. O-O Qg6 12. d4 Nbd7 13. Nc3 Ne4 14. Qc2 Ndf6 15. Ne1 Qh6 16. Nd3 c6 17. bxc6 bxc6 18. Bb2 c5 19. Ra1 { Blechar,M (2240)-Arnold,G (2406) ICCF 2005 0-1 (38)}) 8. Be2 Qe7 9. O-O d6 10. Qc2 c5 11. Nc3 b6 12. Ng5 Bb7 13. Bf3 Bxf3 14. Nxf3 axb5 15. axb5 Nbd7 16. Ne2 g6 17. d3 e5 {Schmidt,K (2155)-Arnold,G (2174) ICCF 2015 1/2}) 6... d5 7. Nf3 a6 8. Be2 axb5 9. cxb5 c5 10. d4 c4 11. Ng5 Qa5 12. O-O Bb4 13. Qc2 {Baumann,W (2109)-Addis,E (1838) ICCF 2009 0-1 (29)}) (1... b6 2. Bb2 Bb7 3. e3 e6 4. Nf3 Nf6 5. b5 a6 (5... Bb4 6. c3 Be7 7. a4 O-O 8. Be2 c5 9. O-O d5 10. d3 a6 11. Qb3 axb5 12. axb5 Rxa1 13. Bxa1 Nbd7 14. c4 dxc4 15. dxc4 Bd6 16. Rd1 Qb8 17. h3 {Buczinski,H (2200)-Aymard,M (2030) ICCF 2011 1-0 (68)}) 6. a4 c5 (6... Be7 7. c4 O-O (7... a5 8. Nc3 O-O 9. Be2 d6 10. d4 Nbd7 11. O-O g6 12. Nd2 d5 13. cxd5 exd5 14. Qb3 Bd6 15. Bf3 Bb4 16. Rfd1 Bxc3 17. Qxc3 Re8 18. Rac1 Rc8 19. Qb3 {Hering,H-Manolis,G (1643) ICCF 2011 1-0 (38)}) 8. Be2 d5 (8... c5 9. bxc6 (9. O-O axb5 10. axb5 Rxa1 11. Bxa1 d5 12. d4 Nbd7 13. dxc5 Nxc5 14. cxd5 Nxd5 15. Nbd2 Bf6 16. Qc2 Qc7 17. Bxf6 Nxf6 18. Rc1 {Skerlík,S (2240)-Brönnimann,P (2118) ICCF 2017 1/2}) 9... dxc6 10. Qb3 c5 11. a5 Nc6 12. axb6 Nd7 13. O-O Qxb6 14. Qxb6 Nxb6 15. d3 a5 16. Bc3 Rfb8 17. Rc1 a4 18. Rc2 Nb4 19. Rb2 Nd7 20. Na3 {Braak,J (2010)-Groot,P (2290) ICCF 2020 1/2}) 9. O-O dxc4 10. Bxc4 axb5 11. axb5 Rxa1 12. Bxa1 c5 13. d3 Nbd7 14. Nbd2 Qc7 15. Qb3 Nd5 16. e4 Nf4 17. g3 Ng6 18. Ne1 {Schmidt,K (2088)-Colombo Berra,F (2260) ICCF 2019 1/2 (32)} ) 7. c4 axb5 8. axb5 Rxa1 9. Bxa1 d5 10. d3 dxc4 11. dxc4 Qxd1+ 12. Kxd1 Bd6 13. Bd3 {Cottle,N (1879)-O'Sullivan,R (1628) ICCF 2014 1/2 (36)}) (1... c5 2. bxc5 e5 3. Bb2 (3. e3 Bxc5 4. c4 (4. Nf3 Nc6 5. d4 exd4 6. exd4 Be7 7. d5 Bf6 8. c3 Ne5 9. Nbd2 d6 10. Bb5+ Bd7 11. Bxd7+ Qxd7 12. Ne4 O-O-O 13. Nd4 Ne7 14. Rb1 Nxd5 15. Nb5 Qe6 {Buczinski,H (2200)-Cotura Vidal,L (1878) ICCF 2011 1-0 (27)}) 4... Nf6 5. Nc3 O-O 6. Nge2 d5 7. Nxd5 Nxd5 8. cxd5 Qxd5 9. Nc3 Qe6 10. Be2 Bb4 11. O-O Qg6 12. Nd5 Bd6 13. d3 Bd7 14. f4 Qe6 {Schmidt,K (2148)-Silin, V (2285) ICCF 2014 1-0 (26)}) 3... Nc6 4. e3 Bxc5 5. c3 (5. Nf3 d6 6. d4 Qb6 7. Bc3 Bb4 8. a3 Bxc3+ 9. Nxc3 exd4 10. exd4 a6 11. Bd3 Nf6 12. O-O O-O 13. Ne4 Nxe4 14. Bxe4 Bg4 15. Rb1 Qc7 16. Bxh7+ Kh8 {Fua,N (2019)-Stapinski,R (1846) ICCF 2010 1-0}) 5... Nf6 6. d3 O-O 7. d4 exd4 8. cxd4 Qa5+ 9. Bc3 Bb4 10. Bxb4 Nxb4 11. Nd2 d6 12. h3 Bf5 13. f3 {Karpoff,K (1930)-Milone,M (1947) ICCF 2008 0-1}) (1... g6 2. Bb2 Nf6 3. c4 (3. e4 d6 (3... Bg7 4. d3 O-O 5. Nf3 d6 6. Be2 c6 7. O-O Qb6 8. a3 e5 9. c4 Nh5 10. Bc1 Nf4 11. Bxf4 exf4 12. Ra2 a5 13. b5 cxb5 14. cxb5 Be6 15. Rd2 {Balañá Romero,R (1938)-Gimeno Díaz,F ICCF 2008 0-1 (46)}) 4. Bc4 Bg7 5. d3 O-O 6. Nd2 b6 7. a4 Bb7 8. Ngf3 e6 9. Bb3 Nxe4 10. Bxg7 Nxd2 11. Bxf8 Nxf3+ 12. gxf3 Kxf8 13. Rg1 Qf6 14. Rg3 Nc6 {Bes,R (1844) -Kappelhof,W (2338) ICCF 2020 0-1}) (3. a3 Bg7 4. Nf3 (4. c4 O-O 5. d4 d5 6. e3 a5 7. b5 c6 8. Nc3 Be6 9. c5 b6 10. Na4 Nfd7 11. cxb6 Nxb6 12. Nc5 Bf5 13. a4 N8d7 {Michas,J (1734)-Williams,J (1909) ICCF 2017 0-1 (47)}) 4... O-O 5. g3 e6 6. Bg2 d5 7. O-O Nbd7 8. d3 c6 9. Nbd2 Re8 10. c4 e5 11. cxd5 cxd5 12. Qb3 Nb6 13. Nxe5 Qd6 14. f4 Ng4 {Coope,D (1921)-Knox,A (1415) ICCF 2017 1-0}) (3. Bxf6 exf6 4. e4 Bxb4 5. c3 Be7 6. Nf3 d5 7. exd5 Qxd5 8. c4 Qd8 9. a3 O-O 10. d4 Nc6 11. h3 Re8 12. Be2 f5 13. O-O Bf6 14. Nc3 Nxd4 {Aannevik,B (1568)-Yeung,C (1740) ICCF 2006 0-1 (26)}) (3. e3 Bg7 (3... e6 4. a3 Be7 5. c4 b6 6. Nf3 Bb7 7. Be2 O-O 8. d3 d5 9. Nbd2 c5 10. cxd5 Nxd5 11. b5 Nd7 12. Qb3 N7f6 13. O-O Nh5 14. g3 a6 15. Nc4 {Diener,R (1900)-Skrotzki,G (1744) ICCF 2019 1-0 (25)}) 4. Ne2 O-O 5. Ng3 d5 6. Be2 h5 7. O-O Qd6 8. Re1 h4 9. Nf1 h3 10. Ng3 hxg2 11. Kxg2 Qxb4 12. Bc3 Qh4 13. f3 c5 14. Rh1 Bh3+ {Karpoff,K (1720)-Tocklin,T (2139) ICCF 2014 0-1}) (3. Nf3 d5 (3... Bg7 4. Bxf6 Bxf6 5. c3 d5 6. e3 e5 7. d4 Nd7 8. Qb3 c6 9. e4 dxe4 10. Nfd2 exd4 11. Nxe4 O-O 12. Nxf6+ Nxf6 13. Qd1 Re8+ 14. Be2 d3 15. O-O {Ridout,P (1399)-Perkins,K (2024) ICCF 2020 0-1}) 4. e3 Bg7 5. Be2 (5. d4 O-O 6. Nbd2 b6 7. Bd3 Nc6 8. a3 e6 9. O-O Bb7 10. Rc1 Re8 11. c4 Nd7 12. Nb3 Ne7 13. c5 Nf6 14. Ne5 c6 15. b5 {Clapp,J (1775)-Crawshaw,R (1736) ICCF 2018 1-0}) 5... a6 6. d3 Bf5 7. O-O Qd6 8. c4 dxc4 9. e4 cxd3 10. Bxd3 Nc6 11. exf5 O-O-O 12. Be2 Qxb4 13. Qc2 gxf5 14. Nbd2 Qf4 {Benassi,A (2293) -Niewold,J (1712) ICCF 2012 1-0}) (3. g4 h6 4. Bg2 Bg7 5. h4 d5 6. g5 hxg5 7. hxg5 Rxh1 8. Bxh1 Qd6 9. Nf3 Nh5 10. Bxg7 Nxg7 11. c3 Bg4 12. d3 Nd7 13. Nbd2 Ne6 14. Qc2 c6 {Wilshusen,H (1393)-Gaboleiro,G (1799) ICCF 2019 0-1 (25)}) 3... Bg7 4. e3 (4. Nc3 d6 5. d4 Nbd7 6. Nf3 O-O 7. e3 (7. e4 e5 8. d5 b6 9. Bd3 a6 10. O-O a5 11. a3 Bb7 12. Nb5 Qb8 13. Qc2 c6 14. dxc6 Bxc6 15. Nc3 Qa7 16. Qd2 Rac8 17. Rfd1 Qa8 18. Qg5 Nxe4 {Slupski,M-Tanner,A ICCF 2010 0-1 (35)}) 7... c5 8. dxc5 dxc5 9. a3 a5 10. Be2 axb4 11. axb4 Rxa1 12. Qxa1 cxb4 13. Nd5 e5 14. Nxe5 Nxd5 15. cxd5 Nxe5 {Mosshammer,M-Karásek,L (2101) ICCF 2006 0-1 (40)}) 4... Na6 (4... O-O 5. d4 b6 6. Be2 (6. Nf3 Bb7 7. Be2 d6 8. Nc3 e6 9. O-O Nc6 10. b5 Ne7 11. a4 c5 12. bxc6 Bxc6 13. Ba3 Re8 14. Nb5 Bxb5 15. axb5 Ne4 16. Bd3 f5 17. Bxe4 fxe4 {Slupski,M-Dunn,J ICCF 2011 1-0 (25)}) 6... Bb7 7. Bf3 d5 8. Ne2 c6 9. c5 b5 10. O-O Nbd7 11. a4 a6 12. Nd2 Re8 13. Nb3 e5 14. dxe5 Nxe5 15. Ned4 Nfd7 16. Na5 {Andersson,L-Arvidsson,D (1412) ICCF 2018 1-0 (36)}) 5. Qb3 O-O 6. d4 c6 7. Nf3 d6 8. Be2 Bg4 9. Nbd2 Bxf3 10. Nxf3 Ne4 11. Bd3 Nf6 12. a4 Nc7 13. b5 {Jamieson,I (1987)-Armstrong,J (1643) ICCF 2011 1-0 (58)}) (1... e6 2. c3 (2. e4 Bxb4 3. Bb2 (3. c3 Bc5 4. Nf3 Nf6 5. d4 Be7 6. Bd3 d5 7. Nbd2 c5 8. O-O Nc6 9. Ba3 c4 10. exd5 Bxa3 11. dxc6 cxd3 12. Qa4 Be7 13. cxb7+ Bd7 14. bxa8=R Bxa4 {Domenche Redondo,F (1717)-Lucena Cifré,R (1782) ICCF 2017 1-0 (26)}) (3. Nf3 d5 4. Bb2 Nf6 5. c3 Be7 6. e5 Nfd7 7. c4 c6 8. d4 b6 9. Bd3 Ba6 10. Qe2 Qc8 11. Nbd2 Bb4 12. O-O h6 13. Rab1 Bxd2 14. Nxd2 Qd8 {Domenche Redondo,F (1717)-Lucena Cifré,R (1782) ICCF 2017 1-0}) 3... Nf6 4. Nc3 (4. e5 Nd5 5. a3 Ba5 6. Qg4 O-O 7. Bd3 Nc6 8. Nf3 Nde7 9. Bxh7+ Kh8 10. Ng5 g6 11. Bg8 Kg7 12. Qh3 {1-0 (12) Domenche Redondo,F (1735)-Lucena Cifré,R (1505) ICCF 2020 }) 4... b6 5. Nf3 Bb7 6. e5 Nd5 7. Nxd5 Bxd5 8. Be2 Bb7 9. O-O Nc6 10. c4 O-O 11. Qc2 h6 12. d4 Be7 13. Rfd1 a5 {Domenche Redondo,F (1717)-Lucena Cifré,R (1782) ICCF 2017 1/2 (28)}) (2. a3 Nf6 (2... b6 3. e3 Bb7 4. c4 d6 5. Nf3 Nd7 6. Nc3 g6 7. d4 Bg7 8. Be2 Ngf6 9. O-O O-O 10. Qc2 Qe7 11. Rb1 c5 12. bxc5 dxc5 13. a4 Rac8 14. Ba3 {Tagoc,C-Anderson,R ICCF 2020 1/2 (32)}) (2... c5 3. bxc5 Bxc5 4. d4 Bb6 5. Nf3 d5 6. e3 Nf6 7. Bd3 O-O 8. Nbd2 Bc7 9. O-O Nc6 10. Bb2 Ne7 11. c4 Ne8 12. Rc1 f5 13. Ne5 Bxe5 14. dxe5 {Walker,J (1796)-Elwood,D (1778) ICCF 2016 1-0 (32)}) (2... d5 3. Nf3 c5 4. Nc3 cxb4 5. axb4 Bxb4 6. e3 Nf6 7. Ba3 Bxa3 8. Rxa3 O-O 9. Bb5 Bd7 10. Rb3 Bxb5 11. Rxb5 Qc7 12. Qb1 b6 13. O-O Rc8 14. Re1 {Domenche Redondo,F (1926)-Soto Palomo,C (1919) ICCF 2015 0-1 (36)}) (2... Qf6 3. Nc3 Ne7 4. Nf3 Nd5 5. Bb2 Nxc3 6. Bxc3 Qe7 7. g3 b6 8. Bg2 Bb7 9. O-O f6 10. Re1 Nc6 11. b5 Nd8 12. a4 Nf7 13. d3 Rb8 14. Qb1 {Coope,D (1921)-Armstrong,J (1536) ICCF 2017 1-0 (46)}) 3. Bb2 Be7 (3... a5 4. b5 (4. e3 axb4 5. axb4 (5. Bc4 d5 6. Be2 Bd6 7. Nf3 Nc6 8. O-O O-O 9. d3 Qe7 10. axb4 Rxa1 11. Bxa1 Bxb4 12. Nbd2 Bd6 13. Re1 Rd8 14. c4 b6 15. Qa4 Bb7 16. Bc3 Bb4 { Chiverton,B-Cox,R (1776) ICCF 2014 0-1 (29)}) 5... Rxa1 6. Bxa1 Bxb4 7. Nf3 d5 (7... O-O 8. Be2 Nc6 9. O-O Qe7 10. Ne5 b6 11. c4 Bb7 12. Nxc6 Bxc6 13. Bc3 Ne4 14. Qc2 Bd6 15. f3 Qh4 16. g3 Nxg3 17. hxg3 Qxg3+ {0-1 (17) Thomsen,J (1639) -Schuster,K ICCF 2013}) 8. Be2 O-O 9. O-O Nc6 10. c4 dxc4 11. Qc2 b5 12. d4 Nd5 13. Bc3 Be7 14. Re1 b4 {0-1 (14) Visser,A (1849)-Carlsen,T (1753) ICCF 2019}) 4... d5 (4... c5 5. c4 d5 6. e3 Be7 7. Nf3 O-O 8. Be2 Nbd7 (8... b6 9. O-O Bb7 10. cxd5 Nxd5 11. d4 Nd7 12. Nbd2 Rc8 13. Nc4 cxd4 14. Bxd4 Bc5 15. Bb2 Qe7 16. Rc1 Rfd8 17. Qc2 N5f6 18. Rfd1 Bd5 19. Nfd2 e5 20. Qf5 {Fagerbekk,E (2178) -Maccapan,F (2165) ICCF 2011 1-0 (46)}) 9. Qc2 Qc7 10. O-O e5 11. cxd5 Nxd5 12. Qe4 N5b6 13. Bxe5 Nxe5 14. Qxe5 Bd6 15. Qb2 Bg4 16. h3 {Diener,R (1900) -Phillips,P (1834) ICCF 2019 0-1 (53)}) (4... c6 5. bxc6 Nxc6 6. Nf3 d5 7. e3 Be7 8. Be2 O-O 9. O-O Bd7 10. c4 dxc4 11. d3 Qb6 12. Qc2 Qb3 13. Qxb3 cxb3 14. d4 a4 15. Ne5 Nxe5 16. dxe5 {Neumann,F (1609)-Pearce,T ICCF 2011 0-1 (28)}) 5. d3 c6 6. bxc6 Nxc6 7. Nf3 Bc5 8. e3 d4 9. e4 e5 10. Be2 Be6 11. Ng5 Qb6 12. Bc1 Bd7 13. f4 h6 14. fxe5 Nxe5 15. Nf3 {Bonatti,A (1774)-Sabbatini,G (1967) ICCF 2011 0-1 (28)}) (3... g6 4. Nf3 (4. g4 Bg7 5. g5 Nh5 6. Bxg7 Nxg7 7. h4 d5 8. Nf3 b6 9. d4 Nd7 10. e3 Bb7 11. Nbd2 Qe7 12. Bd3 O-O 13. c3 c5 14. bxc5 bxc5 15. c4 dxc4 {Yokoyama,T-Takahashi,M ICCF 2016 0-1 (25)}) 4... Bg7 5. e3 O-O 6. Nc3 d5 7. d4 Nbd7 8. Bd3 Re8 9. Ne5 Nxe5 10. dxe5 Nd7 11. f4 c5 12. Nb5 Qb6 13. Nd6 Re7 14. Qg4 cxb4 15. Bd4 {Cooper,R (2063)-Woodruff,D (1846) ICCF 2013 1-0 (34)}) 4. Nc3 (4. e3 O-O (4... d5 5. d4 O-O 6. c4 c6 7. Nf3 a5 8. c5 b6 9. Bd3 Bb7 10. O-O bxc5 11. bxc5 Ba6 12. Bxa6 Nxa6 13. Nc3 Qb8 14. Na4 Nc7 15. Ne5 Ra6 16. Qd3 {Stapinski,R (1744)-Hardwick,M (1214) ICCF 2020 1-0 (30)}) 5. c4 (5. d4 d6 6. c4 c5 7. dxc5 dxc5 8. Qb3 cxb4 9. axb4 Qb6 10. b5 a5 11. Be2 Nbd7 12. Nf3 Qc7 13. Qc2 b6 14. O-O Bb7 15. Rd1 Be4 16. Qc1 Bd6 {Williams,B-Cipka,I ICCF 2004 0-1 (47)}) (5. Be2 d5 6. Nf3 Nbd7 7. O-O c6 (7... c5 8. b5 b6 9. c4 Bb7 10. d4 dxc4 11. Bxc4 cxd4 12. Bxd4 Qc7 13. Nbd2 Rac8 14. Bb3 Nc5 15. Rc1 Qb8 16. Bxc5 Bxc5 17. a4 Rfd8 18. Qe2 Rd7 19. Rfd1 {Flewelling,H (1760)-Agnäs,T (1760) ICCF 2018 1/2 (31)}) 8. d3 a5 9. bxa5 Qxa5 10. a4 Qc7 11. Nbd2 e5 12. Qb1 e4 13. dxe4 dxe4 14. Ng5 Nc5 15. Bd4 Bf5 16. f3 exf3 {Walker,J (1968) -Wallner,J (2333) ICCF 2006 0-1 (43)}) 5... b6 6. b5 Bb7 7. Nf3 c5 8. bxc6 Nxc6 9. d4 Ne4 10. Nbd2 Nxd2 11. Nxd2 d5 12. Bd3 dxc4 13. Nxc4 b5 14. Nd2 Ne5 15. Bxh7+ {Stapinski,R (1852)-Sutkiené,R (2026) ICCF 2017 0-1 (36)}) (4. g3 a6 5. Bg2 d5 6. Nf3 b6 7. c4 Bb7 8. cxd5 exd5 9. d4 O-O 10. O-O Nbd7 11. Nbd2 Re8 12. Nb3 Bf8 13. Rc1 Rc8 14. Bh3 c6 15. Ne5 Rc7 {Clapp,J (1937)-Smith,A (1668) ICCF 2016 1-0}) 4... d5 5. e3 O-O 6. h3 Nc6 7. Nf3 Re8 8. b5 Na5 9. Be2 Nc4 10. Bxc4 dxc4 11. Qe2 a6 12. a4 a5 13. Ne5 Bd6 {O'Brien,P-Williamson,D ICCF 2013 0-1 (43)}) (2. b5 a6 3. c4 (3. e4 Bc5 4. Nf3 axb5 5. Bb2 b6 6. Bxg7 Bb7 7. Bxh8 Bxe4 8. Bb2 Nc6 9. Bxb5 Bxf3 10. Qxf3 Nge7 11. Qh5 Nf5 12. Qxh7 Qg5 13. Qh8+ Bf8 14. Bxc6 dxc6 {Hofer,S (1599)-Richards,M (1374) ICCF 2017 0-1}) 3... d5 4. e3 axb5 5. cxb5 e5 6. Bb2 Bd6 7. d4 Nd7 8. dxe5 Nxe5 9. Nd2 Nf6 10. Ngf3 Nxf3+ 11. Nxf3 Bb4+ 12. Nd2 Ne4 13. Bc1 Bc3 {Tago,S-White,B ICCF 2008 0-1}) (2. Bb2 Nc6 (2... c5 3. bxc5 Bxc5 4. Bxg7 Bd4 5. Bxd4 f6 6. e3 Nc6 7. Qh5+ Kf8 8. Bb2 Nb4 9. Ba3 Qe7 10. Qd1 a5 11. c3 d5 12. Nf3 b6 13. Qb3 Bd7 14. cxb4 {Kappelhof, W-Miedema,H ICCF 2015 1-0 (26)}) (2... Qh4 3. a3 f5 4. Nf3 Qh6 5. e3 Nf6 6. Be2 g5 7. c4 Bg7 8. Nc3 O-O 9. Nb5 Na6 10. c5 g4 11. Ne5 Ne4 12. d3 Ng5 13. Rc1 Bf6 14. O-O {Edney,D (1956)-Ash,G (1755) ICCF 2017 1-0 (37)}) (2... f6 3. b5 b6 4. e3 a6 5. Nc3 axb5 6. Bxb5 Bb7 7. Nf3 Nh6 8. O-O Nc6 9. e4 Ng4 10. a3 Nge5 11. Nxe5 Nxe5 12. d4 Ng6 13. f4 Bd6 14. f5 {Cottarelli,F (1891)-Lindberg,W (1668) ICCF 2013 1-0 (29)}) 3. a3 b6 4. c4 Ba6 5. b5 Bxb5 6. cxb5 Na5 7. e4 Qe7 8. Nf3 O-O-O 9. d3 f6 10. Nbd2 e5 11. Be2 g5 12. O-O Qe6 13. d4 g4 {Groot,P (2290) -Vaessen,J (1143) ICCF 2020 1-0}) (2. d4 Bxb4+ 3. c3 Be7 4. e4 d5 5. e5 c5 6. Be2 Nc6 7. Nf3 Qb6 8. O-O Bd7 9. Na3 a6 10. Rb1 Rc8 11. Rxb6 cxd4 12. Rxb7 { 1-0 (12) Domenche Redondo,F (1721)-Lucena Cifré,R (1418) ICCF 2020}) (2. f4 Bxb4 3. c3 Be7 4. e4 d5 5. d3 dxe4 6. dxe4 Qxd1+ 7. Kxd1 Nd7 8. f5 exf5 9. exf5 Nc5 10. Be3 Bxf5 11. Nd2 O-O-O 12. Ngf3 Ne4 {0-1 (12) Klancar,J-Norcic,N ICCF 2013}) 2... d5 3. Nf3 Nf6 4. d4 (4. g3 Bd6 5. d3 O-O 6. Bh3 c6 7. O-O a6 8. Be3 a5 9. a3 axb4 10. Qc1 bxa3 11. Nbd2 Nbd7 12. d4 Qa5 13. Rd1 h6 14. Re1 b5 15. Nb1 a2 {Cottrell,J (1684)-Baron,M (1950) ICCF 2017 0-1 (34)}) 4... Bd6 5. Bg5 h6 6. Bxf6 Qxf6 7. g3 O-O 8. Bg2 a5 9. b5 Bd7 10. Qd3 c6 11. bxc6 Bxc6 12. Nbd2 Nd7 13. O-O {Petters Merino,O (2064)-Armién,B ICCF 2013 1-0 (28)}) (1... Nc6 2. b5 Nd4 (2... Ne5 3. e4 (3. Nc3 e6 4. h3 c5 5. h4 c4 6. f3 Ng6 7. h5 Bc5 8. hxg6 Qh4+ 9. Rxh4 Bd6 10. Rxc4 Bg3# {0-1 (10) Medhurst,M-Callaway,J ICCF 2006}) (3. d4 Ng6 4. c4 e6 5. Bb2 Nf6 6. e3 c6 7. Nc3 d6 8. Nf3 Be7 9. Bd3 c5 10. a4 b6 11. O-O O-O 12. Re1 d5 13. Bxg6 hxg6 14. cxd5 exd5 {Martínez Muñoz,J-Azzi,R (1798) ICCF 2013 0-1 (53)}) 3... e6 (3... Nf6 4. f4 Ng6 5. f5 Nxe4 6. fxg6 hxg6 7. Qf3 d5 8. Nc3 Nxc3 9. dxc3 Rh4 10. Bd3 a6 11. bxa6 bxa6 12. Qf2 Rh8 13. Nf3 Qd6 14. O-O Bg4 15. h3 {Walker,J (1771)-Brown,S (1838) ICCF 2016 1-0 (28)}) 4. d4 Ng6 5. Nf3 Bb4+ 6. Bd2 Bxd2+ 7. Nbxd2 c6 8. bxc6 bxc6 9. Bd3 Rb8 10. Rb1 Bb7 11. O-O {1-0 (11) Banzino,A-Hernáez Altuna,A ICCF 2011}) (2... Na5 3. e3 (3. e4 b6 4. Bb2 Bb7 5. d3 e6 6. Nf3 f6 7. Be2 c6 8. bxc6 Bxc6 9. Nc3 Bb4 10. a3 Bxc3+ 11. Bxc3 Ne7 12. Nd4 O-O 13. O-O Ng6 14. Bb4 Re8 {Heijnens,R (2291)-Vaessen,J (1143) ICCF 2020 1-0}) (3. Nf3 d5 4. d3 e6 5. Bd2 b6 6. e4 Bd7 7. a4 Qf6 8. e5 Qe7 9. Be2 c6 10. Na3 f6 11. O-O Nb7 12. c4 Nc5 13. Bb4 a5 14. bxa6 Rxa6 { Cottarelli,F (1766)-Sweetland,D ICCF 2014 1-0 (30)}) 3... Nf6 4. Nf3 b6 5. Ba3 a6 6. bxa6 Bxa6 7. Bxa6 Rxa6 8. O-O Qa8 9. Nc3 d6 10. Nd4 Nc4 11. Bc1 e5 12. Ndb5 Qb7 13. Qe2 d5 14. d3 {Ott,P-Burklow,R (1502) ICCF 2017 1-0 (34)}) (2... Nb4 3. a3 Nd5 4. Bb2 Ngf6 5. e3 d6 6. c4 Nb6 7. Nf3 Bg4 8. h3 Bxf3 9. Qxf3 d5 10. c5 Nbd7 11. c6 bxc6 12. bxc6 Nb6 13. Be2 Qd6 14. Nc3 {Thomsen,J-Chlubna,J (1696) ICCF 2011 1-0}) 3. e3 Nxb5 (3... Ne6 4. Bb2 d5 5. Nf3 b6 6. d4 a6 7. a4 Qd7 8. Ne5 Qd6 9. Ba3 Qd8 10. Qf3 Nf6 11. c4 Bb7 12. Nc3 Ng5 13. Qf5 h6 14. cxd5 Bc8 15. Qf4 {Martínez Muñoz,J (1720)-Pye,J (1604) ICCF 2013 1-0 (28)}) 4. Bxb5 c6 5. Be2 d5 6. c4 e5 7. cxd5 Qxd5 8. Nf3 Bb4 9. Bb2 Bf5 10. Bxe5 f6 11. Nc3 Qe6 12. a3 Bc5 13. Na4 {Kennedy,J-McKigney,T ICCF 2018 1-0}) (1... a6 2. Bb2 e6 (2... Nf6 3. a3 g6 4. Nf3 Bg7 5. e3 O-O 6. Be2 d6 7. O-O Nbd7 8. c4 Re8 9. d4 b6 10. Qb3 Bb7 {Degterev,P (2419)-Coope,D (1958) ICCF 2013}) 3. a3 (3. Nf3 Nc6 4. a3 d5 5. e3 Nf6 6. c4 Be7 7. Be2 O-O 8. O-O Nh5 9. Ne5 Nxe5 10. Bxe5 Bf6 11. f4 g6 12. Bxh5 Bxe5 13. fxe5 Qg5 14. Be2 Qxe5 {Jean,L-Zoll,C ICCF 2013 1-0 (29)}) (3. c4 Nf6 4. a3 Be7 5. Nf3 Nc6 6. e3 b6 7. Be2 Bb7 8. O-O Bd6 9. d4 Nxb4 10. axb4 Bxb4 11. Qb3 Be7 12. Ba3 d6 13. Nbd2 O-O 14. Bd3 Rb8 {Flewelling, H-O'Hare,A (1741) ICCF 2013 1-0 (31)}) 3... Nf6 4. g3 c5 5. bxc5 Bxc5 6. d4 Ba7 7. c4 Qc7 8. Nd2 Nc6 9. Ngf3 d5 10. Qc2 O-O 11. Bg2 Ne7 12. O-O Bd7 13. Rab1 { Avery,B (1755)-McLaughlin,E (1681) ICCF 2010 1-0 (56)}) (1... b5 2. a4 (2. Bb2 Nc6 (2... Bb7 3. Nc3 (3. e3 a6 4. Nf3 Nc6 5. a3 e6 (5... e5 6. Be2 Bd6 7. d3 Nf6 8. O-O O-O 9. e4 a5 10. c3 a4 11. Nbd2 h6 12. Re1 Qe7 13. Nf1 Qe6 14. Ng3 Qb3 15. Qxb3 {1/2 (15) Karpoff,K (1809)-Aarstad Solum,E ICCF 2011}) 6. c4 bxc4 7. Bxc4 Nf6 8. d4 d5 9. Bd3 Be7 10. O-O Qd7 11. Nbd2 O-O-O 12. Ne5 Nxe5 13. dxe5 Ne4 14. f3 Nxd2 {Frydendal,O (1554)-Williams,R (1190) ICCF 2018 1-0 (28)}) (3. Nf3 Nf6 4. e3 a6 5. c4 c6 6. a3 d6 7. d4 e6 8. Nbd2 Be7 9. Be2 bxc4 10. Nxc4 Nbd7 11. O-O O-O 12. Na5 Qc7 13. Qc2 d5 14. Rfc1 Rac8 {Silfver,T (1730) -Botescu,A ICCF 2014 1-0 (47)}) 3... a6 4. e4 Nf6 5. d3 e5 6. a3 Be7 7. Be2 Nc6 8. Nf3 O-O 9. O-O d5 10. exd5 Nxd5 11. Nxd5 Qxd5 12. c4 bxc4 13. dxc4 Qxd1 14. Rfxd1 {Wright,D (1618)-Gibson,C (1457) ICCF 2014 1-0 (45)}) (2... c6 3. Nf3 a5 4. a3 axb4 5. axb4 Rxa1 6. Bxa1 f6 7. e3 Na6 8. c4 e5 9. cxb5 Nxb4 10. bxc6 dxc6 11. d4 Bf5 12. Bc4 Bc2 13. Qc1 e4 14. Nfd2 {Rouse,L-Pugachev,N ICCF 2020 0-1 (27)}) (2... e6 3. a3 Nf6 4. e3 a6 5. Nf3 d5 6. Be2 Bd6 7. Ne5 Bxe5 8. Bxe5 Nbd7 9. Bb2 O-O 10. d3 Re8 11. Nd2 Nb6 12. O-O Na4 13. Be5 Nd7 14. Bg3 { Bray,P-Burrows,D ICCF 2017 0-1 (47)}) 3. a3 (3. e3 Ba6 4. a3 e5 5. Nc3 Nf6 6. Bxb5 Bxb5 7. Nxb5 Be7 8. c4 a6 9. Nc3 Ng4 10. Qxg4 O-O 11. Nf3 f5 12. Qg3 Bf6 13. d3 e4 14. dxe4 fxe4 {Meara,P-Chugg,M (1414) ICCF 2015 1-0 (43)}) 3... e5 4. e4 a6 5. a4 Bb7 6. Nc3 Bxb4 7. Nd5 Bd6 8. Nf3 Nf6 9. Nxf6+ Qxf6 10. Be2 Na5 11. axb5 axb5 12. Bxb5 O-O 13. d3 Rfd8 {Bray,P-Burrows,D ICCF 2017 0-1 (62)}) (2. e3 e6 3. Bb2 Nf6 4. Bxb5 Bxb4 5. Nf3 O-O 6. O-O a6 7. Be2 Nc6 8. c4 d5 9. a3 Bc5 10. d4 Ba7 11. Nbd2 Rb8 12. Qc2 Bb7 13. Rfb1 Re8 {Visser,A (1845)-Williams, R (1039) ICCF 2019 1-0 (27)}) 2... e5 (2... e6 3. c3 c6 4. axb5 cxb5 5. Na3 a6 6. Nxb5 Be7 7. Nd4 Nf6 8. e3 O-O 9. Ngf3 Bb7 10. Be2 e5 11. Nxe5 Bxg2 12. Rg1 Be4 13. d3 d6 14. Nxf7 {Veld,E-Miedema,H (766) ICCF 2020 1-0 (27)}) 3. axb5 (3. e4 c5 4. axb5 cxb4 5. Nf3 Nf6 6. Nxe5 Nxe4 7. Qf3 Qe7 8. Qxe4 f6 9. Be2 Qxe5 10. Qxa8 Qxa1 11. Qxb8 Kd8 12. b6 axb6 13. Qxb6+ Ke8 14. Kd1 Qxb1 {Dam,J (1639) -Byrne,V (1614) ICCF 2017 1-0}) 3... Bxb4 4. Bb2 d6 5. c3 Bc5 6. d4 exd4 7. cxd4 Bb6 8. e3 Bb7 9. Nf3 Nf6 10. Nbd2 O-O 11. Be2 Re8 12. O-O Nbd7 13. Qb3 { Baumann,W (2100)-Bearce,H (1731) ICCF 2009 1-0 (32)}) (1... Nf6 2. Bb2 (2. a3 a5 (2... b6 3. Bb2 e6 4. c4 (4. e3 c5 (4... Bb7 5. Nf3 c5 (5... Be7 6. c4 O-O 7. Nc3 c5 (7... a5 8. b5 d5 9. d4 Nbd7 10. cxd5 Nxd5 11. Nxd5 Bxd5 12. Bd3 f5 13. O-O Bd6 14. Rc1 a4 15. Qe2 Qe7 16. Bc4 Rf6 17. Ne5 Bb7 18. Nc6 {1-0 (18) Stapinski,R (1953)-Moser,M (1913) ICCF 2013}) 8. b5 d5 9. d4 Nbd7 10. Be2 cxd4 11. Nxd4 dxc4 12. O-O Rc8 13. Rc1 Ne5 14. h3 Qd7 15. f4 Ng6 {0-1 (15) Jiménez Molina,P-Vargas,R ICCF 2016}) 6. bxc5 bxc5 7. Be2 Be7 8. O-O O-O 9. c4 d6 10. d3 Nbd7 11. Nbd2 Rb8 12. Qc2 Qc7 13. Rab1 Bc6 14. Ng5 h6 15. Ngf3 Nb6 16. Nb3 { Hoch,H (2106)-Kovac,S (2163) ICCF 2008 0-1 (48)}) (4... Be7 5. Nf3 c5 6. bxc5 bxc5 7. c4 d5 8. d4 cxd4 9. cxd5 dxe3 10. fxe3 Nxd5 11. Bxg7 Rg8 12. Bd4 Nc6 13. Qd3 Nxd4 14. Nxd4 Bf6 {0-1 (14) Visser,A (1849)-Purwadijaya,N (1826) ICCF 2019}) 5. b5 Bb7 6. Nf3 d5 7. c4 (7. Be2 Qc7 8. c4 Nbd7 9. Qc2 d4 10. exd4 cxd4 11. Bxd4 g6 12. d3 g5 13. h3 h5 14. Qb2 Rg8 15. Bxf6 Nxf6 16. Qxf6 Bg7 17. Qxg5 Bc3+ 18. Nxc3 Rxg5 {Wilshusen,H (1317)-Grecu,N ICCF 2019 0-1}) 7... Bd6 8. Be2 O-O 9. O-O Nbd7 10. d4 dxc4 11. Nbd2 c3 12. Bxc3 Rc8 13. Nc4 Bb8 14. Rc1 cxd4 15. Qxd4 Bxf3 {Hospers,B (1993)-Schreuders,A (2335) ICCF 2020 0-1 (46)}) 4... Bb7 5. d4 d5 6. c5 Be7 7. Nf3 a5 8. e3 axb4 9. axb4 Rxa1 10. Bxa1 O-O 11. Bd3 bxc5 12. bxc5 Nc6 13. Qb3 Qa8 14. O-O {Richardson,D (1787)-Wood,B (1750) ICCF 2012 1/2}) (2... g6 3. Nc3 Bg7 4. e3 O-O 5. Nf3 d6 6. Be2 b6 7. O-O Bb7 8. d4 Nbd7 9. a4 Re8 10. a5 bxa5 11. Rxa5 c5 12. dxc5 dxc5 13. Ba3 a6 14. Qb1 { Walker,J (1761)-Grummitt,W (1980) ICCF 2015 0-1 (46)}) 3. b5 g6 4. Nf3 b6 5. e3 Bg7 6. d4 Bb7 7. c4 d5 8. cxd5 O-O 9. Bd3 Nxd5 10. e4 Nc3 11. Nxc3 Bxd4 12. Nxd4 Qxd4 13. Qc2 Nd7 {Domenche Redondo,F (1735)-Santamaría Quintana,I (1062) ICCF 2020 1-0 (27)}) (2. b5 a6 3. bxa6 Nxa6 4. Bb2 d5 5. e3 Bf5 6. Nf3 e6 7. d4 Nb4 8. Bd3 Bd6 9. a3 Nxd3+ 10. cxd3 Qd7 11. Nc3 O-O 12. O-O Ra6 13. Ne2 Qb5 { Tago,S-Hayakawa,S (2358) ICCF 2008 0-1 (26)}) (2. d4 e6 3. Bb2 Bxb4+ 4. c3 Ba5 5. Nd2 O-O 6. e4 c6 7. Bd3 b5 8. e5 Nd5 9. Ne2 Na6 10. O-O b4 11. Ne4 Nxc3 12. N2xc3 bxc3 13. Nxc3 Rb8 {Bray,P-Morgans,J ICCF 2017 0-1 (34)}) (2. f3 e5 3. Bb2 d6 4. e4 Nxe4 5. fxe4 Qh4+ 6. Ke2 Qxe4+ 7. Kf2 Qxb4 8. Bc3 Qf4+ 9. Qf3 Qh6 10. g3 Nc6 11. Bc4 Be6 12. Bd5 Bxd5 13. Qxd5 Be7 {Dijk,J (1714)-Korab,B (1719) ICCF 2017 1-0}) 2... d6 (2... b5 3. e3 Ba6 4. a4 e5 5. axb5 Bb7 6. Bxe5 Bxb4 7. Nf3 d6 8. Bb2 Nbd7 9. Be2 O-O 10. O-O Ne4 11. d3 Ng5 12. c3 Bc5 13. Nbd2 Bd5 14. Nxg5 {Welti,M (1921)-MacDonald,M ICCF 2006 1-0 (39)}) (2... Nc6 3. b5 Na5 4. e3 g6 5. c4 a6 6. a4 Bg7 7. Nf3 c5 8. Be2 axb5 9. axb5 O-O 10. O-O d5 11. cxd5 Nxd5 12. Bxg7 Kxg7 13. d4 cxd4 14. Qxd4+ {Kural,A (2001)-Baciak,M (1964) ICCF 2007 1/2 (28)}) 3. c4 c5 4. b5 e5 5. e3 Be7 6. Nc3 O-O 7. g3 Qc7 8. Bg2 Nbd7 9. Nge2 Re8 10. O-O Nf8 11. a4 Bd7 12. a5 Rab8 13. f4 {Frydendal,O (1554) -Pajukari,S (1732) ICCF 2018 0-1 (28)}) (1... Na6 2. a3 c5 3. b5 Nc7 4. e3 d5 5. Nf3 Nf6 6. Bb2 Bg4 7. Be2 g6 8. c4 Bg7 9. Be5 dxc4 10. Bxc4 O-O 11. Nc3 Nfd5 12. Bxg7 Kxg7 13. h3 {Stapinski,R (1935)-Green,M (1995) ICCF 2013 0-1 (30)}) ( 1... f6 2. e3 a5 3. b5 a4 4. c4 e5 5. Nc3 a3 6. Rb1 Qe7 7. Nd5 Qc5 8. d4 Qd6 9. b6 cxb6 10. Nxb6 Ra5 11. Nxc8 Qc7 12. Nb6 Nc6 13. Bd2 {Veld,E-Vaessen,J (1091) ICCF 2020 1-0}) (1... g5 2. Bb2 Nf6 3. e3 Bg7 4. c4 d6 5. Qc2 e5 6. Nc3 Nc6 7. a3 a5 8. b5 Ne7 9. h3 Bf5 10. d3 Bg6 11. Nf3 h6 12. Be2 Qd7 13. O-O {Skerlík,S (2332)-Ignatov,B (2318) ICCF 2008 1/2 (83)}) (1... h5 2. Nf3 d5 3. e3 c6 4. c4 Bf5 5. Bb2 e6 6. b5 Nf6 7. Be2 Be7 8. a4 a6 9. Nc3 O-O 10. O-O Qc7 11. cxd5 exd5 12. Qb3 Nbd7 13. d4 {Ringsborg,A (2280)-Cipolla,A (2241) ICCF 2020 (26)}) 2. Bb2 (2. a3 d5 (2... a5 3. b5 d5 (3... Bc5 4. Bb2 d6 5. e3 Nf6 6. d4 exd4 7. exd4 Bb6 8. Nf3 O-O 9. Be2 Re8 10. O-O Bf5 11. c4 Nbd7 12. Nc3 Nf8 13. Qd2 Ng6 14. Rfe1 Qd7 15. Bf1 {Cottarelli,F (2143)-Herzog,K (2022) ICCF 2007 0-1 (36)}) 4. e3 (4. Bb2 Bd6 (4... Nd7 5. Nf3 e4 6. Nd4 Nb6 7. Nc3 Bd6 8. e3 Nf6 9. Be2 Bd7 10. O-O O-O 11. d3 Qe7 12. g3 Rad8 13. a4 Bb4 14. Qd2 c6 15. bxc6 bxc6 16. Qc1 {Luzuriaga,N (2378)-Daatselaar,J (2233) ICCF 2006 1/2 (33)}) 5. Nf3 (5. d4 exd4 6. Qxd4 Nf6 7. Nf3 O-O 8. e3 c5 9. Qd1 (9. bxc6 Nxc6 10. Qd3 Re8 11. Nbd2 Ne5 12. Bxe5 Bxe5 13. Nxe5 Rxe5 14. Rb1 Bf5 15. Qd4 Re7 16. Bd3 Bxd3 17. cxd3 Qd6 18. a4 Rc8 19. O-O Rc2 20. Nc4 Qc7 {Wallner,J (2333)-Daatselaar,J (2233) ICCF 2006 1-0 (49)}) 9... Be6 10. Be2 Nbd7 11. c4 Nb6 12. Nbd2 Ne4 13. cxd5 Bxd5 14. O-O Qe7 15. Nxe4 Bxe4 16. Qb3 c4 {Blittkowsky,R (1975)-Kruk,S (1714) ICCF 2020 1-0 (61)}) 5... Nd7 (5... Qe7 6. e3 Nf6 (6... c5 7. c4 d4 8. d3 Nf6 9. Be2 O-O 10. Nbd2 Bf5 11. Nf1 Bg6 12. e4 Nxe4 13. dxe4 Bxe4 14. Ng3 Bg6 15. h4 h6 16. h5 Bh7 17. Nh4 f5 18. Ng6 {Louro,E (1919)-Krammel,J (1949) ICCF 2018 0-1 (35)}) 7. c4 e4 8. Nd4 O-O 9. cxd5 Nxd5 10. d3 c5 11. dxe4 Nxe3 12. fxe3 cxd4 13. Qxd4 Qh4+ 14. g3 Qh6 15. e5 Be7 16. Nc3 Be6 17. Bg2 {Szabo,A (2307) -Taylor,T (2460) ICCF 2005 1-0 (99)}) 6. e3 Ngf6 7. Be2 e4 8. Nd4 Ne5 9. O-O Nfg4 10. g3 Qg5 11. Nc3 Qh6 12. Bxg4 Bxg4 13. f3 exf3 14. Rf2 Qg5 15. Qf1 h5 { Fournier,F (2098)-Hervet,G (2357) ICCF 2009 0-1}) 4... Nf6 5. Bb2 Bd6 6. c4 O-O (6... dxc4 7. Bxc4 Nbd7 8. d3 (8. Nf3 e4 9. Ng5 O-O 10. Qc2 Ne5 11. Bxe5 Bxe5 12. Nc3 Bxc3 13. Qxc3 h6 14. Nxf7 Rxf7 15. Bxf7+ Kxf7 16. O-O Kg6 17. Rfc1 { Fagerbekk,E (2207)-Peled,S (2054) ICCF 2012 1/2 (28)}) 8... O-O 9. Nf3 Qe7 10. O-O Nb6 11. Nbd2 a4 12. Qc2 (12. Re1 Bg4 13. h3 Bh5 14. e4 Rfe8 15. Ba2 { Benassi,A (2293)-Andersen,J (2196) ICCF 2012 1/2 (25)}) 12... Rd8 13. Ng5 Rf8 14. f4 Nfd5 15. Rfe1 exf4 16. exf4 Qd7 17. g3 h6 18. Nge4 {Louro,E (1904) -Hjorth,J (2006) ICCF 2018 1/2 (27)}) 7. d3 dxc4 (7... d4 8. exd4 exd4 9. Bxd4 Be7 10. Nf3 c6 11. Be2 cxb5 12. cxb5 Nbd7 13. O-O Nc5 14. Nbd2 Re8 15. Re1 Nd5 16. Rc1 Ne6 17. Bb2 Qb6 18. Qb3 Nec7 19. a4 {Visser,A (1997)-Thomas,G (1840) ICCF 2012 1-0 (58)}) 8. dxc4 Nbd7 9. Nf3 e4 10. Nfd2 Nc5 11. Bd4 Qe7 12. Be2 Ne6 13. Bb2 Rd8 14. Qc2 {Visser,A (1997)-Brunclík,V (1844) ICCF 2012 1/2 (53)}) (2... d6 3. Bb2 f5 (3... Be7 4. d3 Nf6 5. c4 O-O 6. e3 Bg4 7. Be2 Qd7 8. h3 Bxe2 9. Nxe2 b5 10. cxb5 Qxb5 11. O-O Nd5 12. d4 Bh4 {0-1 (12) Strobehn,A (1530)-Roberts,R (1541) ICCF 2012}) (3... a5 4. b5 Be7 5. d4 Nd7 6. e4 Ngf6 7. dxe5 Nxe4 8. Nf3 dxe5 9. Be2 O-O 10. O-O Bf6 11. Nbd2 Nec5 12. a4 Qe7 13. Nb3 b6 14. Nfd2 Rd8 15. Qe1 {Priest,S (1920)-Carolin-Unkovich,G (2140) ICCF 2017 0-1 (25)}) (3... g6 4. e3 Bg7 5. Be2 Ne7 6. d4 O-O 7. c4 b6 8. Bf3 c6 9. Ne2 Bb7 10. dxe5 dxe5 11. Nbc3 Nd7 12. Qd2 Qc7 13. Ne4 c5 14. Rd1 Bxe4 15. Bxe4 { Michas,J-Finlayson,M ICCF 2014 1/2 (41)}) 4. d4 e4 5. e3 Nf6 6. c4 (6. d5 Be7 7. h4 O-O 8. g3 Nbd7 9. Be2 Nb6 10. c4 Ng4 11. Nd2 Bf6 12. Qb3 a5 13. Rc1 axb4 14. axb4 Bxb2 15. Qxb2 Ne5 16. Nh3 Qf6 17. Qb3 c5 {Etmans,M (2013)-Oomen,A (2304) ICCF 2006 0-1 (32)}) 6... Be7 7. Nc3 Be6 8. h4 d5 9. c5 Bf7 10. Be2 Nbd7 11. Nh3 Nf8 12. Ng5 Ne6 13. Qa4+ c6 14. b5 {Etmans,M (2029)-Boschma,B (2318) ICCF 2005 1/2}) (2... Nf6 3. d3 d5 (3... a5 4. b5 Bc5 5. e3 O-O 6. Be2 d5 { 0-1 (6) Strobehn,A (1525)-Lucas,K (1898) ICCF 2013}) 4. Bb2 (4. Nf3 a5 (4... Nbd7 5. Nbd2 c5 (5... a5 6. b5 Bd6 7. g3 Nb6 8. Bg2 e4 9. Nd4 Qe7 10. e3 Bg4 11. f3 exd3 12. cxd3 Bd7 13. e4 O-O-O 14. Qc2 h5 15. Nf1 h4 16. Ne3 g6 17. f4 { Coope,D (1709)-Carrettoni,A (2232) ICCF 2006 0-1 (29)}) 6. bxc5 Bxc5 7. e3 O-O 8. Bb2 Re8 9. c4 d4 10. exd4 exd4+ 11. Be2 Nh5 12. g3 Ne5 13. Nxe5 Rxe5 14. O-O Nf6 15. Nb3 Qb6 16. Bf3 {Coope,D (1709)-Torgersen,T (2064) ICCF 2006 1/2 (47)}) 5. Nxe5 axb4 6. Bb2 d4 (6... Bd6 7. axb4 Rxa1 8. Bxa1 Bxb4+ 9. Nd2 d4 10. Qc1 O-O 11. c3 dxc3 12. Bxc3 Na6 13. e3 Nd5 14. Bxb4 Ndxb4 15. d4 c5 16. Bxa6 Nxa6 17. Qb2 cxd4 18. exd4 {Coope,D (1709)-Leite,D (2120) ICCF 2006 1/2 (70)}) 7. axb4 Bxb4+ 8. c3 dxc3 9. Nxc3 Rxa1 10. Qxa1 O-O 11. e3 Re8 12. d4 Ne4 13. Nd3 Qf6 14. Be2 c5 {Coope,D (1709)-Vozda,J (2458) ICCF 2006 0-1 (48)}) 4... Nc6 ( 4... Bd6 5. c4 a5 6. c5 Be7 7. Nf3 e4 8. dxe4 dxe4 9. Qxd8+ Kxd8 10. Ne5 Be6 11. b5 Nfd7 12. Nxd7 Nxd7 13. c6 bxc6 14. bxc6 Nc5 15. Nd2 {Stapinski,R (1748) -Lambert,M (1932) ICCF 2019 0-1 (39)}) 5. Nf3 a6 6. Nxe5 Bd6 7. Nxc6 bxc6 8. h3 O-O 9. e3 Re8 10. Be2 a5 11. Qd2 Bf5 12. O-O Qd7 13. Bxf6 gxf6 14. bxa5 { Jatkowski,S-Dalen,M ICCF 2018 0-1 (33)}) (2... a6 3. d3 d5 4. Nf3 f6 5. Nbd2 c5 6. c4 dxc4 7. bxc5 cxd3 8. Bb2 dxe2 9. Bxe2 Bxc5 10. Rc1 b6 11. Bc4 Ne7 12. O-O Bb7 13. Qe2 Bd5 14. Rfd1 {Domenche Redondo,F (1712)-Calvo Muro,R (1580) ICCF 2019 1-0 (33)}) (2... c5 3. b5 (3. Bb2 Nc6 4. b5 Qb6 5. Nc3 Nce7 6. e4 Qe6 7. Nf3 d6 8. b6 a6 9. Bb5+ Bd7 10. Bxd7+ Qxd7 11. a4 Nf6 12. d3 Nc6 13. O-O Be7 14. a5 {Michas,J (1698)-Johnston,P (1741) ICCF 2016 0-1 (73)}) 3... d5 4. e3 Nf6 5. Bb2 Bd6 6. c4 d4 7. Ne2 O-O 8. Ng3 e4 9. d3 dxe3 10. fxe3 Ng4 11. Nxe4 Nxe3 12. Qe2 Bf4 13. g3 Bh6 14. Bg2 {Dolejs,D (1967)-Goffin,P (2319) ICCF 2015 0-1}) 3. Bb2 (3. e3 Nf6 (3... c6 4. d3 Nf6 5. Bb2 Bd6 6. Be2 a5 7. bxa5 Qxa5+ 8. Nd2 O-O 9. Ngf3 Nbd7 10. O-O Re8 11. h3 Nc5 12. Nh2 Bf5 13. Ng4 Nxg4 14. Nb3 Nxb3 15. cxb3 {Strobehn,A (1530)-Penney,F ICCF 2012 0-1}) 4. c4 (4. d3 a5 5. bxa5 Bd6 6. h3 O-O 7. Nf3 Re8 8. Be2 Nbd7 9. O-O Rxa5 10. Bd2 Ra8 11. a4 c6 12. Bc3 e4 13. dxe4 Nxe4 14. Bd3 Nxc3 15. Nxc3 Ne5 {Jatkowski,S-Probola,M ICCF 2019 0-1 (26)}) (4. Nf3 e4 5. Nd4 c5 6. bxc5 Bxc5 7. Bb5+ Bd7 8. Bxd7+ Qxd7 9. Bb2 O-O 10. O-O Nc6 11. Nxc6 Qxc6 12. f3 Rad8 13. fxe4 d4 14. exd4 Rxd4 15. Kh1 Nxe4 {Strobehn,A (1380)-Barkov,K ICCF 2015 0-1}) (4. d4 e4 5. g3 Bd6 6. Bh3 Bxh3 7. Nxh3 Nbd7 8. Nd2 O-O 9. Nf4 c6 10. Nb3 b6 11. c3 Re8 12. h4 Nf8 13. g4 Qd7 14. g5 Ng4 15. O-O Ng6 {Stevens,D-Cacas,A ICCF 2010 0-1}) 4... a5 5. b5 d4 6. Bb2 c5 7. d3 Nbd7 8. Be2 g6 9. Nd2 dxe3 10. fxe3 Bh6 11. e4 O-O 12. Ngf3 Ng4 13. g3 Be3 14. Qb1 Nb6 {Moeckel,J (2020)-Gil,M (1770) ICCF 2008 0-1 (34)}) (3. d4 exd4 4. Nf3 Nf6 5. Qxd4 c5 6. bxc5 Nc6 7. Qd3 Bxc5 8. Nbd2 O-O 9. e3 d4 10. Nb3 dxe3 11. Qxd8 exf2+ 12. Ke2 Rxd8 13. Nxc5 Ng4 14. h3 Re8+ {Wallner,J (2333) -Walker,J (1968) ICCF 2006 1/2 (58)}) 3... Bd6 (3... a5 4. Bxe5 (4. e3 Nf6 5. Bxe5 axb4 (5... Nbd7 6. Bb2 axb4 7. Nf3 c6 8. Be2 b5 9. axb4 (9. O-O Bb7 10. Qc1 Qc7 11. d3 bxa3 12. Bxa3 c5 13. c3 Bd6 14. d4 b4 15. dxc5 Bxh2+ 16. Nxh2 { Jiménez Ariza,J (2398)-Hernáez Fernández,C (2289) ICCF 2017 1/2 (28)}) 9... Rxa1 10. Bxa1 Bxb4 11. O-O O-O 12. d3 Nb6 13. c3 Bd6 14. Nbd2 Re8 15. c4 dxc4 16. dxc4 b4 17. c5 {Mosshammer,M (1928)-Kulakiewicz,M (1901) ICCF 2013 1/2}) 6. Nf3 Nc6 7. axb4 Rxa1 8. Bxa1 Bxb4 9. c4 dxc4 10. Bxc4 O-O 11. Qc2 Bd6 12. Nc3 Nb4 13. Qb1 Be7 14. Ne4 Nfd5 15. O-O c6 {Luzuriaga,N (2354)-Gavrijski,D (2173) ICCF 2008 1-0 (51)}) (4. c4 dxc4 5. e3 axb4 6. Bxc4 Nc6 7. axb4 Rxa1 8. Bxa1 Bxb4 9. f4 Nge7 10. Bxe5 O-O 11. Nf3 Ng6 12. Bc3 Nh4 13. Bxb4 Nxb4 14. O-O Bg4 15. Be2 Nxf3+ {O'Brien,P-McDermott,F ICCF 2014 0-1 (47)}) 4... Nc6 5. Bb2 axb4 6. e3 Nf6 7. Nf3 Bf5 (7... Bd6 8. axb4 Rxa1 9. Bxa1 Nxb4 10. Be2 Bf5 11. Nd4 Bg6 12. Bc3 O-O 13. O-O Qd7 14. d3 Ra8 15. Qd2 Na2 16. Bb2 h6 17. f4 Qe7 18. Bd1 Re8 19. Kf2 {Malfait,A (2055)-Manarin,F (1915) ICCF 2015 0-1 (35)}) (7... Be7 8. Be2 O-O 9. Ne5 Nxe5 10. Bxe5 bxa3 11. Bb2 Bh3 12. Nxa3 Bxg2 13. Rg1 Bh3 {Michas,J (1813)-Freire,D (1877) ICCF 2018 0-1 (40)}) 8. Bd3 Be6 9. c3 bxc3 10. Nxc3 Be7 11. Nb5 O-O 12. Qc2 Ne4 13. O-O Bf5 14. Rab1 Qd7 15. Nc3 {Taulien,H (2380)-Linnichenko,M (2148) ICCF 2011 1/2 (62)}) (3... Nd7 4. c4 (4. e3 c6 ( 4... Ngf6 5. c4 (5. d4 Bd6 6. c4 dxc4 7. Bxc4 O-O 8. Nf3 e4 9. Ng5 Nb6 10. Bxf7+ Rxf7 11. Nxf7 Kxf7 12. Nc3 Qe8 13. Qe2 Be6 14. O-O-O Bb3 15. Rde1 { 1-0 (15) Martínez Muñoz,J-Rinkleff,A ICCF 2012}) (5. Nf3 e4 (5... Bd6 6. Be2 O-O 7. O-O a5 8. Nc3 c6 9. b5 Qc7 10. h3 Nb6 11. bxc6 bxc6 12. d3 Rb8 13. Rb1 Rb7 14. d4 e4 15. Nd2 Bf5 16. Nb3 Ra7 17. Nc5 {Luzuriaga,N (2378)-Wallner,J (2333) ICCF 2006 0-1 (46)}) 6. Nd4 a5 7. bxa5 (7. b5 Nb6 8. a4 Bd6 9. Be2 O-O 10. O-O Re8 11. d3 Qe7 12. Nd2 Qe5 13. g3 h5 14. Ra2 Bh3 15. Re1 Qg5 16. c4 h4 17. Nf1 exd3 18. Bxd3 dxc4 {Flewelling,H (1788)-Mayers,R (1820) ICCF 2016 0-1}) 7... Nc5 8. a6 Nxa6 9. d3 Be7 10. Be2 Nc5 11. Nc3 c6 12. O-O O-O 13. Nb3 Qc7 14. d4 Nxb3 15. cxb3 Bd6 {Daatselaar,J (2233)-Wallner,J (2333) ICCF 2006 0-1 (47)}) 5... a5 (5... dxc4 6. Bxc4 Nb6 7. Bb3 (7. Be2 Bd6 8. d4 e4 9. Nc3 c6 10. h3 O-O 11. Qc2 Re8 12. g4 Qe7 13. Bf1 Nfd5 14. Nge2 Qh4 15. Nxe4 Nxe3 16. Qd3 Bf5 17. N2c3 {Bonatti,A (1761)-Rutkus,R (1839) ICCF 2010 0-1}) 7... Bd6 8. d3 a5 9. Nf3 axb4 10. Nxe5 O-O 11. axb4 Rxa1 12. Bxa1 Qe7 13. Nf3 Bxb4+ 14. Nbd2 Rd8 15. d4 Bf5 16. Qe2 Be6 17. O-O {Szabo,A (2307)-Radosztics,G (2235) ICCF 2005 1/2 (41)}) 6. c5 (6. b5 Bd6 7. Nf3 e4 8. Nd4 O-O 9. Nc3 dxc4 10. Bxc4 Nc5 11. Qc2 Re8 12. f3 Be5 13. Nce2 (13. Nb3 Nd3+ 14. Bxd3 exd3 15. Qb1 {Thomsen, J-Rúnarsson,G (2149) ICCF 2012 0-1}) 13... exf3 14. gxf3 Ne6 15. O-O-O Nxd4 16. Nxd4 Bxd4 17. Bxd4 Be6 {Fagerbekk,E (2193)-Johansen,O (2306) ICCF 2013 1-0 (39) }) 6... axb4 (6... Be7 7. Nf3 e4 8. Nd4 O-O 9. Nc3 Ne5 10. h3 c6 11. Na4 Nfd7 12. Be2 axb4 13. axb4 b6 14. cxb6 Nxb6 15. Bc3 Nbc4 16. Bxc4 dxc4 {Fels,B (2144)-Stock,G (2134) ICCF 2012 1-0 (53)}) 7. axb4 Rxa1 8. Bxa1 Be7 9. d3 b6 10. d4 exd4 11. exd4 O-O 12. Nf3 Re8 13. Be2 Ne4 14. O-O Bf6 15. c6 Nf8 16. Nc3 {Etmans,M (2013)-Hoeven,J (1975) ICCF 2006 0-1}) 5. c4 (5. d4 e4 6. c4 Ndf6 7. Nd2 Bd6 8. Ne2 Nh6 9. Nc3 O-O 10. Be2 Be6 11. Rc1 Nfg4 12. g3 Rc8 13. Qa4 a6 14. Qd1 b5 15. c5 Bc7 16. Qc2 f5 {Louro,E (1757)-Kaczmarek,R (2163) ICCF 2020 0-1}) 5... Ngf6 6. d4 (6. cxd5 cxd5 7. Nc3 Bd6 8. Nf3 O-O {0-1 (8) Rees, N-Bhaskar,A ICCF 2020}) 6... e4 7. Nd2 Bd6 (7... dxc4 8. Bxc4 Nb6 9. Bb3 Bd6 10. Bc2 Bf5 11. Ne2 O-O 12. Ng3 Bxg3 13. hxg3 Re8 14. Kf1 h5 15. Rh4 g6 16. Kg1 Rc8 17. a4 Nbd5 18. Ba3 a6 19. Qe1 {Lemke,B (2162)-Tauscher,K (2292) ICCF 2018 0-1 (33)}) 8. Ne2 O-O 9. Nc3 Re8 10. Be2 Nf8 11. b5 Ng6 12. a4 h5 13. Qb3 Bc7 14. a5 Bg4 15. Bxg4 hxg4 {Lemke,B (2162)-Hale,A (2172) ICCF 2018 0-1 (36)}) (4. d4 exd4 5. Qxd4 Ngf6 6. Nd2 c5 7. Qf4 Qb6 8. c3 c4 9. e4 Bd6 10. Qh4 Ne5 11. exd5 O-O 12. Nxc4 Nxc4 13. Qxc4 Re8+ 14. Ne2 Ne4 15. Qd4 Bc5 {Dijk,J (1822) -Knigge,M (1794) ICCF 2020 1-0 (58)}) 4... dxc4 5. e3 b5 6. Nc3 (6. Nf3 a5 7. bxa5 f6 8. d4 Rxa5 9. Nbd2 c6 10. Be2 Qc7 11. dxe5 Nxe5 12. Nxe5 fxe5 13. Ne4 Bf5 14. Bh5+ g6 15. Bg4 Nh6 16. Bxf5 Nxf5 17. g4 Nh4 {Taulien,H (2380) -Sospedra Sebastián,J (2234) ICCF 2011 1/2 (36)}) 6... a6 7. d3 cxd3 8. Bxd3 Ngf6 9. Qf3 Rb8 10. Rd1 c5 11. bxc5 Bxc5 12. Nh3 Qe7 13. O-O Bxa3 14. Bxa3 Qxa3 15. Ne4 {Dijk,J-Alascio Ruiz,J ICCF 2016 0-1 (32)}) (3... Nc6 4. b5 Nd4 5. e3 Nf5 6. Bxe5 f6 7. Bb2 Bd6 8. c4 Be6 9. cxd5 Bxd5 10. Nc3 Nge7 11. e4 Bb3 12. Qxb3 Nd4 13. Qa4 Bc5 14. Rc1 O-O 15. Qc4+ {O'Brien,P-Sheriff,J ICCF 2013 1-0}) (3... Nf6 4. Bxe5 Ne4 (4... Be7 5. Nf3 Nc6 6. Bb2 (6. e3 O-O 7. Be2 Ne4 8. d3 Ng5 9. O-O b6 10. Nbd2 Nxf3+ 11. Nxf3 Bg4 12. Bg3 Bf6 13. d4 Bxf3 14. Bxf3 g6 15. Bf4 Ne7 16. Bh6 Bg7 17. Bg5 f6 {Bray,P (1594)-Burrows,D (1705) ICCF 2018 1/ 2 (71)}) 6... Bf5 7. e3 O-O 8. d4 a5 9. b5 Na7 10. a4 Nc8 11. c4 dxc4 12. Bxc4 Bb4+ 13. Bc3 Nd6 14. Bd3 Bg4 15. h3 Be6 16. O-O {Plume,G-Krauze,M ICCF 2005 1-0 }) 5. Nf3 Nc6 6. Bb2 Bd6 7. Bxg7 Rg8 8. Bb2 Bf5 9. d3 a5 10. b5 Ne5 11. dxe4 dxe4 12. Nxe5 f6 13. Nc4 Qe7 14. Qd5 O-O-O 15. Qxf5+ {O'Brien,P-Mair,J ICCF 2013 1-0 (29)}) 4. e3 (4. Nf3 Nd7 (4... Qe7 5. c4 (5. e3 Nf6 6. c4 (6. d3 O-O 7. Be2 Nbd7 8. c4 dxc4 {0-1 (8) Lilleeng,A (2148)-Nowak,I (2294) ICCF 2012}) 6... dxc4 7. Bxc4 e4 8. Nd4 O-O 9. Nc3 Be5 (9... a5 10. b5 c5 11. bxc6 Nxc6 12. Ncb5 Nxd4 13. Nxd6 Bg4 14. Qb1 Qxd6 15. Bxd4 Rac8 16. d3 Bf5 17. h3 Nd5 18. Qb5 Ne7 19. Rd1 exd3 20. Bxd3 Bxd3 21. Qxd3 {Straka,J-Giffen,G ICCF 2009 1/2 (25)}) 10. Qb3 Nbd7 11. Na4 c6 12. Be2 Bc7 13. O-O Ne5 14. Qc2 Re8 15. Nc5 Qd6 16. g3 Bb6 {Luzuriaga,N (2378)-Walker,J (1968) ICCF 2006 1-0 (45)}) (5. Nc3 Nf6 6. Nb5 Nc6 7. Nxd6+ cxd6 8. e3 a6 9. Be2 O-O 10. O-O Bg4 11. Nxe5 Nxe5 12. Bxe5 Bxe2 13. Bxf6 Qxf6 14. Qxe2 Rfe8 15. Qd3 Qe6 16. a4 b6 {O'Brien,P-Dudeney,K (1861) ICCF 2014 1-0}) (5. g3 Nf6 6. Bg2 O-O 7. O-O e4 8. Nd4 Nc6 9. Nxc6 bxc6 10. Qc1 a5 11. bxa5 Rxa5 12. d3 Bf5 13. Qg5 Bg6 14. dxe4 Nxe4 15. Qxe7 Bxe7 16. c4 { Coope,D (1748)-Glukhovtsev,S (2151) ICCF 2007 0-1 (52)}) (5. d3 Nf6 6. g3 O-O 7. Bg2 a5 8. b5 c6 9. bxc6 Nxc6 10. O-O e4 11. Nd4 Nxd4 12. Bxd4 Be5 13. c3 Bf5 14. dxe4 Nxe4 15. Ra2 b5 16. Qb3 Nf6 {Coope,D (1748)-Raijmaekers,C (2077) ICCF 2007 0-1 (37)}) 5... dxc4 6. e3 (6. e4 b5 7. a4 c6 8. Nc3 Bxb4 9. axb5 Bd7 10. Bxc4 Bxc3 11. dxc3 cxb5 12. Ba3 Qf6 13. Qd5 Nc6 14. Rd1 O-O-O 15. Qxb5 Nd4 16. Qc5+ Nc6 17. Rb1 Re8 {Veroni,A (1953)-Brien,A ICCF 2007 1-0}) 6... Nd7 7. Bxc4 Ngf6 8. d3 O-O 9. O-O c6 10. Nbd2 b5 11. Bb3 Bb7 12. Bc2 a5 13. bxa5 Bc7 14. a4 b4 15. Nc4 Rfd8 16. e4 {Kural,A (2345)-Musitani,C (2354) ICCF 2015 1/2}) (4... f6 5. Nc3 c6 6. e4 d4 7. Nb1 Be6 8. c3 dxc3 9. Nxc3 Ne7 10. d4 exd4 11. Nxd4 Bf7 12. Qg4 Be5 13. Nf3 O-O 14. Nxe5 fxe5 15. Rd1 Qc7 16. h4 {O'Brien, P-Tibbert,P (1738) ICCF 2014 1-0}) 5. e3 (5. c4 c6 6. cxd5 cxd5 7. Nc3 Ngf6 8. Nb5 Bb8 9. Rc1 O-O 10. Qc2 e4 11. Nfd4 Ne5 12. Nc7 Bxc7 13. Qxc7 Nc4 14. Qxd8 Rxd8 15. Bc3 Nxa3 16. e3 Nc4 {Luzuriaga,N (2354)-Cottarelli,F (2106) ICCF 2008 1-0 (54)}) (5. d3 a5 6. Nbd2 Ngf6 7. e3 O-O 8. Be2 Re8 9. c3 e4 10. dxe4 Nxe4 11. Nxe4 dxe4 12. Nd2 Qg5 13. g3 Nf6 14. Nc4 Bh3 15. Nxa5 Ng4 16. Nxb7 Bf8 { Dijk,J (1805)-Brennan,S ICCF 2019 0-1 (26)}) (5. Nc3 c6 6. e4 d4 7. Ne2 Ngf6 8. d3 a5 9. Qd2 axb4 10. axb4 Rxa1+ 11. Bxa1 b6 12. Ng3 O-O 13. c4 Nb8 14. Bb2 Na6 15. Ba3 Qe7 {Michas,J (1755)-Kok,H (1739) ICCF 2020 (30)}) 5... Ngf6 (5... Ne7 6. c4 c6 7. Nc3 a6 8. Be2 O-O 9. O-O f6 10. Qb3 e4 11. Nd4 Qe8 12. cxd5 f5 13. dxc6+ Qf7 14. Bc4 Qxc4 15. Qxc4+ Kh8 16. cxd7 Bxd7 17. Ne6 {Jean,L (1909) -Loison,F (1544) ICCF 2018 1-0 (28)}) 6. d4 (6. c4 e4 7. Nd4 dxc4 8. Bxc4 Ne5 9. Be2 O-O 10. O-O a5 11. b5 Nfg4 12. h3 Qh4 13. Nc3 Nf6 14. Qe1 Qg5 15. f4 exf3 16. Nxf3 Nxf3+ 17. Rxf3 Qe5 {Cottarelli,F (2143)-Cherkashov,M ICCF 2007 0-1 (65)}) 6... e4 7. Nfd2 (7. Ne5 Qe7 8. c4 Nxe5 9. dxe5 Bxe5 10. Bxe5 Qxe5 11. Nd2 d4 12. f4 exf3 13. Nxf3 Qxe3+ 14. Qe2 O-O 15. Qxe3 dxe3 16. Bd3 Re8 17. O-O-O Bd7 18. g4 Bxg4 {Yokoyama,T-Tago,S (1678) ICCF 2016 0-1}) 7... Nb6 (7... O-O 8. c4 dxc4 9. Nxc4 Nb6 10. Nbd2 Bd7 11. Be2 Qe7 12. O-O Nfd5 13. Ne5 Ba4 14. Qb1 f5 15. Ndc4 Nxc4 16. Bxc4 c6 17. Rc1 Qe6 18. Bc3 Rad8 19. h3 { Luzuriaga,N (2336)-Gavrijski,D (2143) ICCF 2009 1-0 (52)}) 8. c4 dxc4 9. Nxe4 Nxe4 10. Nd2 Nxd2 11. Qxd2 Qg5 12. g3 Qd5 13. f3 Qxf3 14. Bg2 Qh5 15. e4 O-O { Luzuriaga,N (2336)-Vegjeleki,A (2195) ICCF 2009 0-1 (40)}) (4. f3 Nf6 5. e3 O-O 6. h4 a6 7. Nc3 c5 8. b5 d4 9. exd4 exd4 10. Na4 Bg3+ 11. Ke2 Qe8+ 12. Kd3 Bf5+ 13. Kc4 Qxb5# {0-1 (13) Limoli,P (1688)-Parente,M (1566) ICCF 2015}) (4. f4 exf4 5. Bxg7 Qh4+ 6. g3 fxg3 7. Bg2 gxh2+ 8. Kf1 Nf6 (8... hxg1=Q+ 9. Kxg1 Qg5 10. Bxh8 h5 11. Qe1 Bg3 12. Qf1 h4 13. Qf3 Be6 14. c4 h3 15. Bxh3 Be5+ 16. Qg2 Qxg2+ 17. Bxg2 Bxa1 18. Bxa1 a5 19. Rh8 Kf8 20. cxd5 {Michas,J (1803)-Harman,K (1685) ICCF 2017 1-0 (37)}) 9. Nf3 Qg3 10. Bxf6 Rg8 11. Rxh2 Qg6 12. Be5 Bxe5 13. Nxe5 Qf6+ {Michas,J (1803)-Geluk,P (2109) ICCF 2017 0-1 (40)} 14. Kg1 Qxe5 15. Nc3 d4 {Dolejs,D-Davis,J (2224) ICCF 2013 0-1 (28)}) (4. g3 Nf6 5. Bg2 O-O 6. d3 a5 7. Nf3 axb4 8. O-O e4 9. dxe4 dxe4 10. Nd4 Qe7 11. e3 bxa3 12. Nxa3 Bxa3 13. Qc1 Bxb2 14. Qxb2 Rxa1 15. Qxa1 Nbd7 {Bernardara,E (1315)-Boho,A ICCF 2019 0-1 (25)}) (4. d3 Be6 5. Nf3 f6 6. Nbd2 Ne7 7. g3 O-O 8. Bg2 Nd7 9. O-O c6 10. Rc1 a5 11. c3 a4 12. c4 h6 13. Nh4 g5 14. Nhf3 b5 15. Ne1 f5 {Coope,D (1748)-Nagy,Z (1772) ICCF 2007 1-0 (34)}) 4... Nf6 (4... Be6 5. Nf3 (5. d4 e4 6. Nd2 (6. c4 c6 7. Nc3 Nf6 8. c5 Bc7 9. Nge2 Ng4 10. Nf4 Qf6 11. Qd2 O-O 12. h3 Qh6 13. g3 a6 14. Be2 Nf6 15. O-O-O g5 16. Nxe6 fxe6 17. g4 Nbd7 {Szabo,A (2307)-Trumpf,W (2429) ICCF 2005 1/2 (67)}) 6... Nf6 7. c4 c6 8. c5 Bc7 9. h3 O-O 10. Ne2 Nbd7 11. Nc3 Ne8 12. b5 Qg5 13. Qa4 cxb5 14. Nxb5 Bb8 15. Nc3 Bc7 16. Nb5 Bd8 {León Ayllon,F-Barnola Espelt,J (2186) ICCF 2005 1/2 (63)}) 5... Nd7 6. d3 (6. d4 e4 7. Nfd2 Qg5 8. c4 c6 9. cxd5 cxd5 10. Nc3 f5 11. Nb3 a6 12. Nc5 Bxc5 13. dxc5 Ngf6 14. Ne2 O-O 15. Rc1 Rfc8 16. Nf4 Bf7 17. g3 Rc7 { Louro,E (1757)-Holliday,J ICCF 2020 1-0 (32)}) 6... Ngf6 7. c4 c5 8. bxc5 Nxc5 9. cxd5 Bxd5 10. Nbd2 O-O 11. Be2 Re8 12. O-O Qd7 13. Rb1 Rac8 14. e4 Bc6 15. Nc4 Ba4 16. Qd2 {Visser,A (1987)-Spasov,S (2200) ICCF 2012 1-0 (42)}) (4... Nd7 5. c4 c6 6. cxd5 cxd5 7. Nc3 Ne7 8. Nf3 O-O 9. Qb3 Nb6 {Louro,E (2122)-Claus,A (2182) ICCF 2011}) (4... c6 5. Nf3 Nd7 6. d4 e4 7. Nfd2 Ne7 8. c4 O-O 9. Nc3 Nf6 10. Be2 a5 11. b5 Qd7 12. c5 Bb8 13. Na4 Bc7 14. h3 cxb5 15. Nc3 b6 16. Nxb5 {Louro,E (1758)-Bruno,G (1270) ICCF 2020 1-0 (30)}) 5. c4 (5. Ne2 Bg4 ( 5... O-O 6. Ng3 Be6 7. Be2 a5 8. Nc3 c6 9. b5 Nbd7 10. O-O Nb6 11. d4 e4 12. a4 Re8 13. Nb1 cxb5 14. axb5 Qc7 15. Ba3 Nc4 16. Bxd6 Nxd6 17. Ra4 {Müller,K (1847)-Figlio,G (2445) ICCF 2006 0-1}) 6. f3 Be6 7. Ng3 Nbd7 8. Be2 O-O 9. O-O Re8 10. Nc3 c6 11. Bd3 a5 12. b5 Nb6 13. Rb1 e4 14. fxe4 Ng4 {0-1 (14) Müller, K (1847)-Iriarte Gómez,E (2237) ICCF 2006}) (5. h3 Be6 6. Bb5+ c6 7. Ba4 Nbd7 8. d3 b5 9. Bb3 O-O 10. Ne2 a5 11. bxa5 Qxa5+ 12. Bc3 Qb6 13. O-O Nc5 14. d4 Nxb3 15. cxb3 exd4 16. Bxd4 c5 {Jatkowski,S-Singh,P ICCF 2019 0-1 (26)}) (5. Nf3 Bg4 (5... e4 6. Nd4 a5 7. b5 O-O 8. d3 Nbd7 9. Nf5 Be5 10. d4 Bd6 11. Nxd6 cxd6 12. a4 Nb6 13. Na3 Nxa4 14. Bc1 Bg4 15. Qd2 Qc7 16. Nb1 Nb6 {Michas,J (1803)-Boulanger,M ICCF 2017 0-1 (56)}) 6. Be2 Nbd7 7. O-O O-O 8. h3 Bxf3 9. Bxf3 a5 10. c3 axb4 11. cxb4 Nb6 12. d3 c6 13. Nc3 Qe7 14. Qb3 Nfd7 15. Bg4 f5 16. Bf3 Kh8 {Dolejs,D (1844)-Hegde,G ICCF 2017 0-1 (35)}) 5... c6 (5... dxc4 6. Bxc4 O-O 7. d3 (7. Nc3 a5 8. b5 Nbd7 9. d3 Nb6 10. Ba2 Qe7 11. Nf3 h6 (11... Be6 12. Bxe6 Qxe6 13. O-O a4 14. Qc2 Nfd7 15. Rab1 Qb3 16. Qc1 Nc5 17. Rd1 f5 18. Ng5 Kh8 19. Ba1 Qg8 20. Qc2 {Buczinski,H (2261)-Karg,H (2372) ICCF 2010 0-1 (49)}) 12. O-O Rd8 13. Qc2 Bg4 14. Qe2 a4 15. Rfd1 Bh5 16. h3 Ra5 17. g4 Bg6 18. d4 exd4 {Hering,H-Bredenhof,B (2095) ICCF 2011 1/2}) 7... Nbd7 8. Nf3 a6 9. O-O b5 10. Bb3 Bb7 11. d4 exd4 12. exd4 Nb6 13. Nc3 Nfd7 14. d5 Re8 15. Re1 Rxe1+ 16. Qxe1 Qf8 17. Rd1 {Sanjur,R (1914)-Rodriguez,L (2061) ICCF 2016 0-1 (70)}) 6. Nf3 (6. d3 O-O (6... Nbd7 7. Nd2 a5 8. c5 Bb8 9. Ngf3 O-O 10. Be2 b6 11. b5 Qc7 12. cxb6 Qxb6 13. a4 cxb5 14. axb5 Qxb5 15. Ba3 Re8 16. O-O Ba6 17. Re1 a4 {Visser,A (1987)-Khorunzhy,M (2221) ICCF 2012 0-1 (34)}) 7. Nd2 Re8 8. Be2 Nbd7 (8... d4 9. c5 dxe3 10. fxe3 Bc7 11. e4 b6 12. Ngf3 bxc5 13. O-O Ba6 14. Qc2 Ng4 15. Qb3 Nd7 16. Ne1 Ngf6 17. Nc4 Rb8 18. Nc2 Nb6 19. Nd2 Bb5 20. a4 {Visser,A (1987)-Díaz Castañet,J (2135) ICCF 2012 0-1 (31)}) 9. Ngf3 a5 10. c5 Bb8 11. O-O b6 12. Qc2 bxc5 13. bxc5 Ba6 14. Rfe1 Qe7 15. Rac1 a4 16. e4 d4 17. Nh4 Ba7 {Visser,A (1987)-Bars,J (2326) ICCF 2012 0-1 (49)} (17... g6 18. f4 Nh5 19. Nf5 Qxc5 20. Qxc5 Nxc5 21. Rxc5 Nxf4 22. Ng3 Nxe2+ 23. Nxe2 Bxd3 24. Rxc6 Bb5 25. Rcc1 Bd6 26. Nc4 Bf8 27. Nb6 Ra6 28. Nd5 d3 29. Nec3 {Frenzel,L (2023)-Zylla,J (2376) ICCF 2014 0-1 (56)})) (6. cxd5 cxd5 7. Nf3 Bg4 8. Be2 Nbd7 9. h3 Bxf3 10. Bxf3 O-O 11. Nc3 e4 12. Be2 a6 13. O-O Qe7 14. f4 Qe6 15. d3 Rac8 16. dxe4 dxe4 17. Qd4 Rfd8 {Szabo,A (2310)-Cotos,V (2347) ICCF 2006 1/ 2 (36)}) (6. Nc3 d4 7. exd4 (7. Nce2 c5 8. bxc5 Bxc5 9. Ng3 O-O 10. Qc2 Qd6 11. Nf3 Rd8 12. exd4 exd4 13. d3 Nc6 14. Be2 b6 15. O-O Re8 16. Qd2 {Hering,H (2193)-Vlasov,A ICCF 2012 1/2 (38)}) (7. Na4 O-O 8. exd4 exd4 9. Bxd4 Bxh2 10. Nf3 Bg4 11. Be3 Bc7 12. Be2 Nbd7 13. Nc3 Re8 14. Kf1 Nf8 {Nento,R-Eife,G (1815) ICCF 2018 1-0}) 7... exd4 8. Na4 a5 9. c5 Bc7 10. Nf3 O-O 11. Bxd4 axb4 12. axb4 Bg4 13. Be3 Bxf3 14. Qxf3 Nd5 15. Be2 Qh4 16. Qg4 Qxg4 17. Bxg4 f5 { Mosshammer,M (1928)-Prokopenko,A ICCF 2013 1/2 (41)}) (6. d4 e4 7. Nd2 O-O 8. Ne2 (8. h3 a5 9. b5 cxb5 10. c5 Be7 11. Bxb5 b6 12. c6 Qd6 13. Rc1 Ba6 14. c7 Bxb5 15. c8=Q Rxc8 16. Rxc8+ Bd8 17. Rc1 Nc6 18. Ne2 a4 19. Nc3 Bd3 {Louro,E (1758)-Geryk,M (2000) ICCF 2020 0-1 (32)}) 8... Ng4 9. h3 Nh2 10. Nc3 Nxf1 11. Kxf1 Be6 12. c5 Bc7 13. b5 f5 14. g3 Qe8 15. bxc6 bxc6 16. Rb1 g5 17. Ne2 Nd7 { Louro,E (1819)-Packroff,H (2241) ICCF 2019 0-1 (29)}) (6. c5 Bc7 7. Nf3 e4 8. Nd4 Nbd7 9. Be2 Ne5 10. O-O O-O 11. d3 Nxd3 12. Bxd3 Bxh2+ 13. Kxh2 Ng4+ 14. Kg3 Qg5 15. f4 Qg6 16. f5 Bxf5 17. Nxf5 Nxe3+ {Moeckel,J (2020)-Sogin,D (2160) ICCF 2008 0-1}) 6... Qe7 (6... e4 7. c5 (7. Nd4 dxc4 8. Nc3 O-O (8... a5 9. Bxc4 axb4 10. axb4 Rxa1 11. Qxa1 Bxb4 12. Qb1 Qe7 13. O-O O-O 14. f3 exf3 15. Rxf3 Bd6 16. Nce2 b5 17. Bd3 Be5 18. Bc3 Qc7 19. Ng3 Nbd7 20. Bb4 {Frenzel,L (1924)-Cillóniz Razzeto,A (2449) ICCF 2010 0-1 (57)}) 9. Bxc4 a5 10. b5 Nbd7 11. bxc6 bxc6 12. Nxc6 Qc7 13. Bb5 Nc5 14. Na4 Qb7 (14... Nfd7 15. Bc3 Ba6 16. Nxc5 Nxc5 17. a4 Nd3+ 18. Kf1 Bb4 19. Kg1 Bxb5 20. axb5 Qb6 21. Qh5 f5 22. h4 Bxc3 23. dxc3 a4 24. g3 Qc5 25. Kg2 Kh8 26. Nd4 {Mosshammer,M (1910) -Hopfgartner,A ICCF 2012 1-0 (42)}) 15. Nd4 Nd3+ 16. Bxd3 exd3 17. O-O Bd7 18. Rb1 Rfb8 {Taulien,H (2380)-Jarabinský,M (2104) ICCF 2011 1/2 (39)}) 7... exf3 8. cxd6 fxg2 9. Bxg2 Qxd6 10. Qf3 Nbd7 11. Qg3 Qxg3 12. hxg3 O-O 13. d3 Re8 14. Nd2 Ne5 15. Ke2 Bf5 16. Bxe5 Rxe5 17. Nf3 Bg4 18. Bh3 {Frenzel,L (2044) -Genzmann,M (2496) ICCF 2007 1-0}) (6... Nbd7 7. d3 (7. d4 e4 8. Nfd2 O-O 9. Be2 dxc4 10. Nxc4 Bc7 11. Nbd2 Re8 12. O-O Nd5 13. Qc2 Qe7 14. g3 N7f6 15. Ne5 Bf5 16. Rac1 Rac8 17. Qb3 Be6 18. Qc2 Bf5 {Lemke,B (2162)-Rattray,T (2180) ICCF 2018 1/2}) 7... O-O 8. Be2 Re8 (8... Qe7 9. O-O dxc4 10. dxc4 c5 11. b5 e4 12. Nfd2 Ne5 13. Nc3 Bf5 14. Qb1 Rae8 15. Rd1 Bb8 16. a4 Nfg4 17. Nf1 Qg5 18. Rd5 Nf6 19. Rxc5 Bd6 20. Rxe5 {Louro,E (1866)-Rozumek,K (1764) ICCF 2019 1/2 (49)}) 9. O-O Nf8 10. Nbd2 Ng6 11. Qc2 Bf5 12. Rfe1 a5 13. Bc3 e4 14. dxe4 Nxe4 15. cxd5 Nh4 16. Qb2 Nxf3+ 17. Nxf3 Nxc3 18. Qxc3 {Lemke,B (2162)-Plas,R (2332) ICCF 2018 1/2 (32)}) 7. d4 (7. Nc3 O-O (7... d4 8. Ne2 (8. c5 Bc7 9. Ne2 O-O 10. Ng3 (10. exd4 Nbd7 11. Ng3 exd4+ 12. Qe2 Re8 13. Bxd4 Qd8 14. Be3 Nd5 15. Qd3 Qf6 16. Nd4 b6 17. Be2 bxc5 {0-1 (17) Müller,K (1847)-Bennett,P (1969) ICCF 2006}) 10... b6 11. cxb6 axb6 12. Bc4 (12. Qc2 c5 13. Rc1 Na6 14. b5 Nb8 15. Bd3 Nbd7 16. O-O Bb7 17. Ng5 h6 18. N5e4 Nxe4 19. Bxe4 Bxe4 20. Qxe4 Nf6 21. Qc6 Qd8 22. Rfe1 Nd5 23. f3 Rb8 {Louro,E (2127)-Smirnovs,A (2268) ICCF 2010 0-1 (25)}) 12... Bg4 13. h3 Be6 14. Bxe6 Qxe6 15. O-O c5 16. Qc2 Qd5 17. exd4 exd4 18. Bxd4 Bxg3 19. Bxf6 Bxf2+ {Jean,L (1909)-Guinefolleau,M (1956) ICCF 2018 1-0 (34)}) 8... Bg4 (8... dxe3 9. dxe3 O-O 10. Ng3 Rd8 11. Qc2 c5 12. b5 a6 13. Bd3 axb5 14. cxb5 g6 15. O-O Nbd7 16. Rfd1 Kg7 17. a4 b6 18. Bc4 Bc7 19. Rd2 Bb7 20. e4 {Szabo,A (2307)-Einarsson,o^ (2274) ICCF 2005 1-0 (34)}) 9. exd4 Bxf3 10. gxf3 exd4 11. Bxd4 O-O 12. Bg2 a5 13. O-O axb4 14. axb4 Rxa1 15. Bxa1 Bxb4 16. d4 Bd6 17. Ng3 Qc7 18. Kh1 Nbd7 19. Bh3 {Szabo,A (2307)-Raffaele, E (2420) ICCF 2005 1/2 (48)}) 8. cxd5 Nxd5 9. Nxd5 (9. Ne4 Bc7 10. Bc4 Nd7 11. O-O f5 12. Nc3 N7b6 13. Bb3 Be6 14. Ne2 Bf7 15. Ng3 Bg6 16. d3 Kh8 17. e4 Nf4 18. Qc2 Rad8 19. Rad1 Nd7 20. Kh1 Qf6 {Szabo,A (2307)-Limontas,M (2328) ICCF 2006 1/2 (67)}) 9... cxd5 10. Qb3 d4 11. Be2 Be6 12. Bc4 Bxc4 13. Qxc4 Nd7 14. O-O Rfc8 15. Qb3 dxe3 16. Qxe3 a5 17. bxa5 Rxa5 18. Rfe1 Rb5 {Szabo,A (2307) -Gertners,G (2253) ICCF 2005 1/2 (75)}) (7. cxd5 cxd5 8. Nc3 Nc6 9. d3 (9. b5 Nb8 (9... Na5 10. Qa4 b6 11. Be2 O-O 12. O-O Bd7 13. Rac1 Rfc8 14. Rfe1 Qe8 15. Qc2 Rc7 16. Qd1 Rac8 17. d3 Qe7 18. Qa4 a6 19. d4 axb5 20. Nxb5 Rxc1 21. Rxc1 { Szabo,A (2310)-Necula,I (2241) ICCF 2006 0-1 (70)}) 10. Be2 O-O 11. Qb3 Be6 12. d4 Nbd7 13. dxe5 Nxe5 14. Nd4 Rfc8 15. O-O Nc4 16. Bxc4 Rxc4 17. Rac1 Rac8 18. Nce2 Ne4 19. Rxc4 dxc4 20. Qc2 Bd7 {Farguell Baró,J (1990)-Paredes Prats,J (2292) ICCF 2005 1/2 (29)}) 9... O-O 10. b5 Na5 11. Be2 Be6 12. h3 Rac8 13. O-O Nb3 14. Rb1 d4 15. exd4 exd4 16. Ne4 Nxe4 17. dxe4 Rfd8 18. a4 Ba3 {Fournier,F (2098)-Schaub,M (1881) ICCF 2009 0-1 (32)}) 7... e4 8. Nfd2 O-O 9. Nc3 a6 10. Be2 (10. h3 Bc7 11. a4 Qxb4 12. Qb1 Qe7 13. Ba3 Bd6 14. Bxd6 Qxd6 15. a5 Nbd7 16. Be2 c5 17. dxc5 Qe5 18. Nxd5 Nxc5 19. Nb6 Rb8 20. O-O Qc3 21. Rd1 Be6 { Taulien,H (2380)-Kuhne,D (2268) ICCF 2011 1/2 (41)}) (10. c5 Bc7 11. h3 Nbd7 12. Be2 Re8 13. a4 b6 14. Nb3 bxc5 15. bxc5 a5 16. Nb5 cxb5 17. axb5 a4 18. Nd2 Nxc5 19. dxc5 Qxc5 20. Rxa4 Rxa4 21. Qxa4 Bd7 {Lemke,B (2162)-Camps,J (2123) ICCF 2018 1/2 (33)}) 10... Be6 11. Rc1 Nbd7 12. O-O h6 13. cxd5 cxd5 {Taulien, H (2380)-LePage,C (2352) ICCF 2011 1/2 (42)}) (2. b5 a6 (2... d5 3. Bb2 (3. d4 Bd6 4. Nf3 e4 5. Ne5 Nf6 6. Bb2 O-O 7. e3 Re8 8. c4 c6 9. Nc3 a6 10. cxd5 cxd5 11. bxa6 Nxa6 12. Rc1 Bxe5 13. dxe5 Rxe5 14. Qd2 Re8 {Domenche Redondo,F (1598) -Aguilar Medina,J (1575) ICCF 2016 1/2 (34)}) 3... Bd6 (3... Nd7 4. e3 Ngf6 5. Nf3 (5. c4 Bd6 6. a4 O-O 7. cxd5 Nxd5 8. Nf3 Re8 9. d3 c6 10. bxc6 bxc6 11. Na3 Qa5+ 12. Nd2 Ba6 {0-1 (12) Giachè,G-Yeung,C (1740) ICCF 2006}) 5... e4 (5... Bd6 6. c4 (6. d4 exd4 7. Bxd4 O-O 8. c4 a6 9. a4 axb5 10. axb5 Rxa1 11. Bxa1 Bb4+ 12. Bc3 Qe7 13. Qb3 Bxc3+ 14. Nxc3 Nc5 15. Qb2 Rd8 16. cxd5 Bf5 17. Nd4 Be4 {Baumann,W (1970)-Parente,A (2032) ICCF 2017 0-1 (54)}) 6... e4 7. Nd4 O-O 8. Nc3 dxc4 9. Bxc4 Nb6 10. Be2 Re8 11. d3 exd3 12. Qxd3 Ng4 13. Ne4 Bb4+ 14. Bc3 a5 15. a3 Bxc3+ 16. Nxc3 Qh4 17. Bxg4 {Braak,J (1955)-Bjørneboe,D (1818) ICCF 2012 1-0 (45)}) 6. Nd4 Nc5 7. Nb3 Ne6 8. c4 dxc4 9. Bxc4 Nd5 10. Nc3 Nxc3 11. Bxc3 Qg5 12. g3 Bd7 13. h4 Qg6 14. a4 c6 15. h5 {Baumann,W (2080)-Niziolek, J (2041) ICCF 2015 1-0 (36)}) (3... d4 4. Nf3 f6 5. e3 dxe3 6. fxe3 Be6 7. Nc3 Bb4 8. Bd3 Nd7 9. O-O Ne7 10. a3 Bxc3 11. Bxc3 O-O 12. Bb4 Re8 13. Nh4 g6 14. Qf3 Rb8 15. Qg3 {Feldborg,B (2211)-Carapinha,H ICCF 2011 1-0 (42)}) 4. e3 (4. Nf3 Qe7 (4... Nd7 5. c4 (5. g3 Ngf6 6. Bg2 O-O 7. O-O Re8 8. d3 Qe7 9. a4 e4 10. Nd4 Ne5 11. Nc3 Qd7 12. e3 c5 13. Nde2 Qe7 14. h3 Nf3+ 15. Kh1 Bf5 16. dxe4 dxe4 {Fernández Fornés,J (2301)-Carbajal,C (2460) ICCF 2008 0-1 (50)}) 5... Ngf6 6. cxd5 e4 7. Nd4 O-O 8. e3 Nxd5 9. Nc3 Nxc3 10. Bxc3 Nc5 11. Qh5 Na4 12. Bc4 g6 13. Qh6 Nxc3 14. dxc3 Be5 15. O-O Qe7 16. Rad1 {Baumann,W (2058) -Jamka-Pietron,B ICCF 2016 0-1 (38)}) 5. e3 (5. c4 d4 6. e3 c5 7. d3 Nf6 8. Be2 O-O 9. O-O Nbd7 10. e4 Rd8 11. Nbd2 Nf8 12. Nh4 Nxe4 13. Nxe4 Qxh4 14. Qd2 f5 15. g3 Qe7 16. Nxd6 Rxd6 {Domenche Redondo,F (1884)-García Burguillo,J (1862) ICCF 2016 0-1 (31)}) 5... Nf6 6. Be2 Nbd7 (6... Bf5 7. d4 e4 8. Nfd2 O-O 9. c4 c5 10. g4 Be6 11. cxd5 Bxd5 12. g5 Nfd7 13. Nc3 Nb6 14. Nxd5 Nxd5 15. Qb3 Nc7 16. dxc5 Be5 17. Bxe5 Qxe5 18. Rc1 {Taulien,H-Kazmierczuk,Z (1913) ICCF 2006 1-0 (57)}) (6... O-O 7. d4 e4 8. Nfd2 a6 9. a4 axb5 10. axb5 Rxa1 11. Bxa1 c6 12. bxc6 Nxc6 13. c4 dxc4 14. Nxc4 Bb4+ 15. Bc3 b5 16. Ncd2 Nd5 17. Bxb4 Ncxb4 18. O-O {Baumann,W (1864)-Demirci,U ICCF 2011 1-0 (28)}) 7. d4 e4 8. Nfd2 a6 9. c4 dxc4 10. bxa6 b6 11. Nxc4 Bb4+ 12. Bc3 Bxa6 13. Qa4 Bxc3+ 14. Nxc3 O-O 15. O-O Bb7 {Kural,A (2001)-LeSavouroux,H ICCF 2007 1/2}) (4. c4 c6 5. bxc6 bxc6 6. d4 e4 7. e3 Nf6 8. Qa4 O-O 9. Ba3 Be6 10. Ne2 Bxa3 11. Qxa3 a5 12. Nf4 Bf5 13. Nc3 Na6 14. Qa4 g5 15. Nfe2 Nb4 {Mai,W (2025)-Samir,M ICCF 2012 1-0}) 4... Nf6 (4... Ne7 5. Ne2 (5. Nf3 f6 6. Be2 Be6 7. O-O (7. d4 O-O 8. dxe5 fxe5 9. Nxe5 Nd7 10. Nxd7 Qxd7 11. Nd2 c5 12. e4 c4 13. Bd4 Qxb5 14. O-O Qc6 15. Bg4 Bf7 16. e5 Bc5 17. Nf3 b6 18. c3 Qg6 {Balañá Romero,R (1824)-Calvo Muro,R (1530) ICCF 2018 1-0 (37)}) 7... c6 8. Nc3 Qc7 9. g3 O-O 10. a4 Nd7 11. d4 e4 12. Nd2 a6 13. Nb3 cxb5 14. axb5 Bh3 15. Re1 Bb4 16. Qd2 Rfc8 {Bernardara,E (1290) -Mujunen,M (1922) ICCF 2020 0-1 (28)}) (5. c4 O-O 6. h3 d4 7. Nf3 c5 8. d3 dxe3 9. fxe3 e4 10. dxe4 Bg3+ 11. Ke2 Nd7 12. Nc3 f5 13. Bc1 Qe8 14. Kd2 Nf6 15. Bd3 fxe4 16. Nxe4 Nxe4+ {Andersson,L-Hermansen,R (2052) ICCF 2018 0-1}) 5... Bg4 6. Qc1 O-O 7. Ng3 c6 8. a4 Nd7 9. c4 Rc8 10. Be2 Bxe2 11. Nxe2 cxb5 12. axb5 Rxc4 13. Qd1 Qb6 14. Ba3 Bxa3 15. Nxa3 Rc7 16. O-O {Karpoff,K (1827)-Ferdinand,J ICCF 2012 0-1 (31)}) (4... c5 5. d4 cxd4 6. exd4 e4 7. c3 Qe7 8. Qe2 f5 9. a4 Nf6 10. Ba3 O-O 11. c4 dxc4 12. Qa2 Be6 13. Bxc4 Bxc4 14. Qxc4+ Kh8 15. Ne2 Nbd7 16. O-O {Karpoff,K (1827)-Kadonas,K (1595) ICCF 2012 0-1 (32)}) (4... c6 5. Nf3 Bg4 6. h3 Bxf3 {0-1 (6) Saatci,F-Martin,A (1841) ICCF 2012}) (4... Be6 5. Nf3 Nd7 6. d3 Qf6 7. c4 dxc4 8. dxc4 Qg6 9. Nbd2 Ngf6 10. Rc1 e4 11. Nd4 Nc5 12. Nxe6 fxe6 13. Bxf6 gxf6 14. g3 O-O-O 15. Be2 h5 16. Qc2 {Louro,E (2193) -Dalar,A ICCF 2006 0-1}) 5. Nf3 (5. d4 e4 6. a4 (6. Nd2 Ng4 7. Be2 Qg5 8. Nh3 Qh4 9. Nf1 Nf6 10. Nf4 g5 11. g3 Qh6 12. Nh5 Nxh5 13. Bxh5 Bh3 14. Rg1 c6 15. Be2 cxb5 16. Bxb5+ Nd7 17. Nd2 a6 {Haznedaroglu,K (1990)-Aymard,M (2010) ICCF 2006 0-1 (31)}) (6. Qd2 a6 7. Ba3 axb5 8. Bxb5+ c6 9. Bxd6 Qxd6 10. Be2 b5 11. Qc3 O-O 12. Nd2 Be6 13. Nb3 Nbd7 14. h4 Ra3 15. Nh3 Bxh3 16. Rxh3 Rfa8 { Haznedaroglu,K (1990)-Ling,A (2062) ICCF 2006 0-1 (30)}) 6... O-O 7. Ba3 a6 8. Bxd6 Qxd6 9. Nd2 Bg4 10. Be2 Be6 11. h4 axb5 12. axb5 Nbd7 13. Nh3 Nb6 14. Nf4 Na4 15. Qc1 Nc3 16. Rxa8 Rxa8 {Haznedaroglu,K (1990)-Cottarelli,F (2185) ICCF 2006 1/2 (74)}) (5. c4 a6 (5... c6 6. a4 O-O 7. Qc2 Qe7 8. Nf3 Be6 9. Nxe5 Bxe5 10. Bxe5 dxc4 11. Bb2 Rd8 12. Bxc4 Bxc4 13. Qxc4 cxb5 14. axb5 Nbd7 15. O-O Nb6 16. Qe2 Rac8 17. Ba3 {Andersson,L (1701)-Clayton,G (1620) ICCF 2019 1-0 (44)}) (5... O-O 6. cxd5 (6. a4 Re8 7. cxd5 Nxd5 8. Nc3 Nb4 9. Qb1 Be6 10. Nf3 a5 11. Be2 Bb3 12. O-O Bc2 13. Qc1 Nd7 14. d4 h6 15. Ba3 Bg6 16. Rd1 exd4 17. Nxd4 Nc5 {Braak,J (1983)-Jaeger,F (2041) ICCF 2017 1/2 (40)}) 6... Nxd5 7. Qb3 (7. e4 Nf4 8. Qf3 a6 9. bxa6 Nxa6 10. g3 Ne6 11. Qc3 Nd4 12. Qc1 Nb4 13. Bxd4 exd4 { 0-1 (13) Stasiak,W-Juan Rodríguez,F ICCF 2008}) 7... Be6 8. Bc4 c6 9. bxc6 bxc6 10. e4 Nf4 11. Bxe6 Nxe6 12. Nf3 Na6 13. O-O Rb8 14. Qc3 Nf4 15. Kh1 Nc5 16. Ba3 Nxe4 17. Qxc6 {Böhnke,H (2164)-Malyshev,V (2278) ICCF 2005 0-1 (31)}) (5... dxc4 6. Bxc4 a6 7. a4 O-O 8. Qc2 Nc6 9. bxc6 bxc6 10. Nc3 g6 11. Nge2 Bb7 12. O-O c5 13. f4 e4 14. Ng3 Qe7 15. Nd1 h5 16. Qc3 Kg7 17. Nf2 {Giachè,G-Aannevik, B (1568) ICCF 2006 1-0}) 6. a4 O-O 7. cxd5 (7. h3 axb5 8. cxd5 b4 9. Bc4 Ra5 10. Qb3 Nbd7 11. d4 e4 12. Nd2 Nb6 13. Ne2 Bd7 14. Bb5 Bxb5 15. axb5 Rxa1+ 16. Bxa1 Qd7 17. Nc4 Qxb5 18. Nxd6 cxd6 {Andersson,L-Franzén,T (2295) ICCF 2018 0-1 (26)}) (7. Nf3 Nbd7 8. cxd5 axb5 9. axb5 Rxa1 10. Bxa1 Nxd5 11. Nc3 Nxc3 12. Bxc3 e4 13. Nd4 Qg5 14. h4 Qg6 15. h5 Qg5 {Braak,J (1983)-Falandt,J (2104) ICCF 2017 1/2 (33)}) 7... Nxd5 8. Nc3 Nb4 9. Bc4 Bf5 10. e4 Be6 11. Be2 Nd7 12. Ba3 a5 13. Nd5 f5 14. Nxb4 axb4 15. Bb2 fxe4 16. f3 Nc5 {Andersson,L-Tatundu,A ICCF 2018 0-1}) (5. Ne2 O-O 6. a4 a6 7. Ng3 axb5 8. axb5 Rxa1 9. Bxa1 Be6 10. Be2 Nbd7 11. O-O Qe7 12. d3 Ra8 13. Bb2 Nb6 14. Nd2 Na4 15. Ba1 Nc5 16. c4 c6 { Karpoff,K (1720)-Varonen,H (2043) ICCF 2014 0-1 (42)}) (5. h3 O-O 6. c4 c6 7. a4 dxc4 8. Bxc4 cxb5 9. axb5 Nbd7 10. Ne2 b6 11. O-O Bb7 12. Nbc3 Nc5 13. d4 exd4 14. Nxd4 Nfe4 15. Nxe4 Nxe4 16. Nc6 Bxc6 {Andersson,L-Koski,P (1529) ICCF 2017 1-0}) (5. Be2 e4 6. d3 O-O 7. dxe4 dxe4 8. Nd2 Nbd7 9. Nh3 Nc5 10. Nf4 Bxf4 11. exf4 Nd5 12. Be5 f6 13. Bd4 Ne6 14. Bc4 Kh8 15. Be3 Nexf4 16. O-O f5 { Gavrijski,D (2089)-Vysniauskas,V ICCF 2007 1/2 (47)}) 5... e4 6. Nd4 c5 (6... O-O 7. c4 c5 (7... a6 8. a4 c5 9. bxc6 bxc6 10. cxd5 cxd5 11. Be2 Qc7 12. h3 Nbd7 13. O-O Nc5 14. Ba3 Bd7 15. Nc3 Rfc8 16. Qb1 Bh2+ 17. Kh1 {Braak,J (1983) -Lobo,A (2068) ICCF 2017 1/2 (34)}) 8. bxc6 Nxc6 9. cxd5 Nxd5 10. Nxc6 bxc6 11. Nc3 Rb8 12. Qc1 f5 13. Bc4 Be6 14. Nxd5 cxd5 15. Bb3 f4 16. exf4 Bxf4 17. Qc3 Rf7 18. g3 {Champion,W (1842)-Steinman,A ICCF 2007 0-1}) 7. Nb3 (7. bxc6 Nxc6 8. Be2 O-O 9. c4 dxc4 10. Bxc4 Ng4 11. h3 Qh4 12. Qe2 Nxf2 13. Rf1 Nd3+ 14. Kd1 Nxb2+ {0-1 (14) Thomsen,J-Garau,B ICCF 2012}) 7... O-O 8. Nc3 Nbd7 9. Be2 Ne5 10. d3 c4 11. Nd4 exd3 12. cxd3 Bg4 13. O-O Bxe2 14. Qxe2 {Domenche Redondo,F (1884)-Rodríguez Pérez,R (1979) ICCF 2016 0-1 (27)}) (2... Nf6 3. Bb2 Bc5 (3... a6 4. a4 a5 5. Bxe5 d6 6. Bb2 Bg4 7. Nf3 g6 8. h3 Bxf3 9. exf3 Bg7 10. Qe2+ Kf8 11. Qe3 b6 12. Bc4 c5 13. O-O Qd7 14. Re1 d5 15. Bb3 {Szymanski,P-Blanchard,A (1358) ICCF 2014 1-0 (37)}) (3... c6 4. a4 d6 5. e3 Bd7 6. c4 Be7 7. Be2 O-O 8. Nf3 e4 9. Nd4 Qc8 10. bxc6 bxc6 11. O-O d5 12. Ba3 Re8 13. cxd5 cxd5 14. Nc3 Nc6 15. Nxc6 {Martínez Muñoz,J (1647)-Bilbao,J ICCF 2013 1-0}) (3... Be7 4. Bxe5 O-O 5. e3 d6 6. Bb2 a6 7. bxa6 bxa6 8. d4 d5 9. Nf3 Nc6 10. c4 dxc4 11. Bxc4 Bg4 12. h3 Bh5 13. Nbd2 Bb4 14. O-O Rb8 15. Qc2 {Tago,S (1608)-Saitou,T (1538) ICCF 2015 1-0 (25)}) 4. e3 d6 5. Nf3 (5. d4 exd4 6. exd4 Bb6 7. Bd3 O-O 8. Ne2 a6 9. a4 axb5 10. axb5 Rxa1 11. Bxa1 d5 12. Nd2 c6 13. O-O cxb5 14. Bxb5 Nc6 15. c3 Re8 16. Bd3 Bc7 {Uecker,D (2315)-Ferreira,L (1820) ICCF 2015 1-0 (40)}) 5... O-O 6. Be2 a6 (6... e4 7. Nd4 d5 8. O-O Nbd7 9. f4 exf3 10. Nxf3 a6 11. a4 axb5 12. axb5 Rxa1 13. Bxa1 Qe7 14. c4 dxc4 15. Bxc4 Nb6 16. Bb3 Bd7 17. Nc3 Ra8 18. Qc2 {Kural,A (2001)-Kloeg,J ICCF 2007 1/2 (29)}) 7. d4 exd4 8. exd4 Bb6 9. O-O (9. c4 axb5 10. cxb5 Ba5+ 11. Bc3 Re8 12. O-O Bf5 13. Bxa5 Rxa5 14. Re1 Ng4 15. h3 Nf6 16. Nc3 Nbd7 17. a4 Nb6 18. Qd2 Qa8 19. Bd1 Nc4 20. Qf4 Rxe1+ {Bernardara,E (1290)-Schilleci,C (1751) ICCF 2020 0-1 (40)}) 9... axb5 10. Bxb5 Bg4 11. Re1 Nc6 12. c3 Nd5 13. Nbd2 Nf4 14. h3 {Haznedaroglu,K (1990) -Krüger,J ICCF 2006 0-1 (33)}) (2... Bc5 3. Bb2 Qf6 4. Nf3 d5 5. Bxe5 Qb6 6. e3 Nf6 7. Nc3 Qe6 8. Bxc7 d4 9. Na4 dxe3 10. Nxc5 exd2+ 11. Kxd2 Qd5+ 12. Ke1 Qxd1+ 13. Rxd1 Nbd7 14. Ne5 {Mai,W (2040)-Graça,J (1611) ICCF 2011 1-0 (38)}) ( 2... b6 3. Nc3 (3. Bb2 d6 4. e4 Nf6 5. d3 Be7 6. Nf3 O-O 7. Be2 Bb7 8. O-O c6 9. a4 Nbd7 10. c4 Re8 11. Nbd2 Bf8 12. Re1 c5 13. Nf1 a6 14. Ng3 axb5 {Karpoff, K (1720)-Käyhkö,R (1923) ICCF 2014 1/2 (29)}) 3... Bb7 4. Nf3 d6 5. d3 h6 6. e4 Nf6 7. d4 exd4 8. Qxd4 Be7 9. Bd3 O-O 10. O-O c5 11. Qc4 d5 12. exd5 Nxd5 13. Qe4 f5 14. Qe6+ {Domenche Redondo,F (1763)-Cerdan,C ICCF 2017 1-0}) (2... f6 3. c4 (3. e4 a6 4. Nc3 axb5 5. Nf3 b4 6. Nd5 c6 7. Ne3 d5 8. exd5 cxd5 9. Bb5+ Nc6 10. O-O Be6 11. Bb2 Bd6 12. c4 bxc3 13. dxc3 Nge7 14. Qb3 O-O {Domenche Redondo,F (1627)-Trs,J (2164) ICCF 2016 0-1 (36)}) 3... Bb4 4. Qb3 Bc5 5. Bb2 d6 6. e3 Ne7 7. d4 Bb6 8. Nf3 Bg4 9. Bd3 Bxf3 10. gxf3 Nf5 11. Bxf5 Nd7 12. O-O Qe7 13. a4 Ba5 14. Bc3 {Haznedaroglu,K (1990)-Hanamitsu,I (1811) ICCF 2006 1-0 (28)}) (2... d6 3. e4 Nf6 4. Nc3 Nbd7 5. a4 b6 6. Nf3 Bb7 7. d3 Be7 8. g3 O-O 9. Bg2 Rc8 10. O-O c5 11. Bb2 Re8 12. Ne2 Nf8 13. c4 Rc7 14. Nc3 {Bernardara, E-Davis,J (1204) ICCF 2019 1-0 (32)}) (2... Be7 3. Bb2 Bf6 4. e4 d6 5. Nf3 Ne7 6. Be2 O-O 7. O-O b6 8. c4 Ng6 9. d3 Bg4 10. a4 Nd7 11. Nbd2 Nf4 12. Re1 Nxe2+ 13. Qxe2 Nc5 14. h3 {Karpoff,K (1703)-Wakeham,M (1530) ICCF 2015 0-1 (46)}) 3. e3 (3. Bb2 axb5 (3... Bd6 4. a4 b6 5. e3 Bb7 6. c4 Qh4 7. Nf3 Qh5 8. d3 Nf6 9. e4 Ng4 10. Qd2 Bc5 11. d4 Bxd4 12. Bxd4 exd4 13. Bd3 O-O 14. Qg5 Qxg5 15. Nxg5 {Karpoff,K (1703)-Byrne,V (1545) ICCF 2015 1-0 (48)}) 4. Bxe5 d5 5. e3 Nd7 6. Bg3 (6. Bb2 c6 7. Nf3 Ngf6 8. Bd3 Nc5 9. Be2 Bd6 10. Ba3 O-O 11. O-O Bg4 12. d4 Na4 13. Bxd6 Qxd6 14. Qe1 Ne4 15. Ne5 Bxe2 16. Qxe2 Rfe8 17. Qh5 g6 {Mai,W (2025)-Peled,S (1974) ICCF 2012 0-1 (56)}) 6... c6 7. Nf3 Nc5 8. Be2 Ne7 9. O-O Nf5 10. Be5 f6 11. Bb2 Na4 12. Bc1 Bd6 13. d3 Be6 14. Bd2 O-O {Sartain,K-Frith, S (2104) ICCF 2014 0-1 (28)}) (3. c4 axb5 (3... Bc5 4. Bb2 axb5 5. cxb5 Nf6 6. e3 e4 7. Ne2 d5 8. Ng3 h5 9. Ne2 c6 10. a4 Bg4 11. Qc1 Nbd7 12. Nd4 Bxd4 13. Bxd4 c5 14. Bb2 d4 15. h3 {Karpoff,K (1827)-Tanase,M ICCF 2012 0-1 (37)}) 4. Nc3 bxc4 5. Nf3 d5 6. e4 d4 7. Bxc4 dxc3 8. Nxe5 Qd4 9. Bxf7+ Ke7 10. f4 Qxe4+ 11. Qe2 Qxe2+ 12. Kxe2 Nc6 13. Nxc6+ Kxf7 14. Ne5+ Kf6 {Domenche Redondo,F (1717)-Baron,M (2013) ICCF 2017 0-1}) (3. e4 axb5 4. Bxb5 c6 5. Be2 Nf6 6. Nc3 Bc5 7. Nf3 d5 8. exd5 e4 9. dxc6 Nxc6 10. Ng5 Qd4 11. Rf1 O-O 12. f3 e3 13. Bb2 Qh4+ 14. g3 Qxg5 {Jirka,J (1724)-Hoogkamer,M (1767) ICCF 2015 0-1}) 3... axb5 4. Bxb5 (4. Bb2 f6 (4... Qe7 5. Nf3 e4 6. Nd4 c6 7. g3 d5 8. Bg2 Nd7 9. d3 Ngf6 10. O-O Ne5 11. h3 Qc7 12. Nc3 h5 13. f4 exf3 14. Nxf3 Nxf3+ 15. Qxf3 Ba3 16. Bxa3 {Niewold,J (1888)-Gavrijski,D (2046) ICCF 2014 0-1 (40)}) 5. Bxb5 c6 6. Be2 Qb6 7. Qc1 d5 8. Nf3 Bd6 9. c4 Ne7 10. d4 exd4 11. Bxd4 c5 12. Bb2 O-O 13. cxd5 Nxd5 14. O-O Be6 15. Rd1 Nd7 {Bäckström,M (2258)-Cottarelli,F (2106) ICCF 2008 1/2 (26)}) 4... c6 5. Be2 d5 6. c4 Nf6 7. Bb2 dxc4 (7... d4 8. Qc2 Na6 9. exd4 exd4 10. a3 Nc5 11. d3 Na4 12. Nd2 c5 13. Bf3 Bd6 14. Bc1 Ng4 15. h3 Ne5 16. Ne2 Nxf3+ 17. Nxf3 b6 18. O-O Bb7 19. Ng3 {Mai,W (2025)-Yelken,A ICCF 2012 0-1 (50)}) 8. Bxe5 Nbd7 9. Bd4 b5 10. Nf3 Nc5 11. Nc3 Bd6 12. Qc2 Qe7 13. O-O O-O {Mai,W (2025)-Dirim,O (1961) ICCF 2012 1-0}) (2. e4 Bxb4 3. c3 (3. Nf3 d5 4. Nc3 dxe4 5. Nxe4 f5 6. Ng3 e4 7. Bb5+ c6 8. Bc4 b5 9. O-O bxc4 10. Re1 Nf6 11. Bb2 O-O 12. Qe2 exf3 13. Qxf3 Qd5 14. Qe3 Bxd2 {Scragg,C-Jenkins,R (1843) ICCF 2012 0-1}) 3... Be7 4. d4 Nf6 5. Nf3 Nxe4 6. Qe2 d5 7. Nxe5 Nd7 8. Nd2 Nxc3 9. Qf3 Nxe5 10. Qxc3 Ng6 11. Bd3 Nf4 12. O-O Bf5 13. Bb5+ c6 {Domenche Redondo,F (1677)-Balas,M ICCF 2020 0-1}) (2. Nf3 e4 3. Ne5 d6 4. Nc4 d5 5. Ne5 Bd6 6. f4 f6 7. Nc3 fxe5 8. e3 Nf6 9. Rb1 exf4 10. d3 fxe3 11. Bxe3 Ng4 12. Qe2 O-O 13. Nxd5 Bxh2 {Dijk,J (1802)-Macs,O (1928) ICCF 2018 0-1}) (2. c3 Bd6 3. d4 e4 4. f3 Nf6 5. fxe4 Nxe4 6. Nd2 Nxc3 7. Qb3 Qh4+ 8. g3 Bxg3+ 9. hxg3 Qxg3# { 0-1 (9) Kostová,M-Cviková,K ICCF 2009}) (2. d4 exd4 3. Qxd4 d5 4. e3 Nc6 5. Bb5 Be7 6. Bxc6+ bxc6 7. Nf3 Bf6 8. Ne5 Ne7 9. Bb2 Qd6 10. Qf4 Ng6 11. Nxg6 Qxf4 12. Nxf4 Bxb2 13. Ke2 Bxa1 {Rodríguez Padilla,N-León Benitez,M ICCF 2013 0-1 (27)}) (2. e3 Bxb4 3. Bc4 d5 4. Bb5+ c6 5. Ba4 Nf6 6. Nf3 Nbd7 7. O-O e4 8. Nd4 O-O 9. c3 Bd6 10. f3 Ne5 11. f4 Nd3 12. Ba3 Bg4 13. Qb3 c5 {Nelson,J (1816) -Rogers,D (1779) ICCF 2015 0-1}) (2. f4 exf4 3. Nf3 Bxb4 4. Bb2 Nf6 5. c3 Bd6 6. c4 O-O 7. Nc3 Nc6 8. Qc2 a6 9. g3 fxg3 10. hxg3 Re8 11. Nd5 Bxg3+ 12. Kd1 Ne4 13. Rg1 d6 {Braak,J (1878)-Jongman,R (2185) ICCF 2009 1/2 (36)}) 2... Bxb4 (2... f6 3. e4 (3. b5 d5 (3... a6 4. e4 axb5 5. Bxb5 c6 6. Bc4 d5 7. exd5 cxd5 8. Bb3 Ne7 9. Ne2 Nbc6 10. O-O Be6 11. Ng3 Ng6 12. Ne2 Bb4 13. Nbc3 O-O 14. Ne4 Na5 15. N4c3 {Balañá Romero,R (1859)-Santamaría Quintana,I (1372) ICCF 2015 1-0 (30)}) (3... Bc5 4. e3 d6 5. d4 exd4 6. exd4 Bb6 7. a4 c6 8. Bd3 Ne7 9. Nf3 a6 10. Nc3 Bg4 11. O-O Bxd4 12. h3 Bxf3 13. Qxf3 Be5 {0-1 (13) Enachi,M (2159) -Arsene,M ICCF 2014}) (3... Ne7 4. c4 d6 5. e3 Nd7 6. Nf3 Nc5 7. d4 Ne6 8. Be2 Ng6 9. Nc3 b6 10. O-O Bb7 11. c5 dxc5 12. d5 e4 13. Ne1 Ng5 14. f4 Nf7 15. g4 { Jamieson,I (1987)-Pomeroy,R (2088) ICCF 2011 1-0 (44)}) 4. e3 (4. Nc3 d4 5. Ne4 Bf5 6. Ng3 Bd7 7. a4 Bd6 8. e3 dxe3 9. dxe3 Ne7 10. c4 Nf5 11. Ba3 Nxg3 12. hxg3 Bxa3 13. Rxa3 O-O 14. Rd3 Be6 15. Rxd8 c6 {Bray,P-Jones,P ICCF 2017 1-0}) (4. g3 Bd7 5. a4 a6 6. e3 axb5 7. axb5 Rxa1 8. Bxa1 Ne7 9. h3 Nf5 10. Nf3 e4 11. Nd4 Nxd4 12. exd4 Be6 13. Nc3 Be7 14. Bg2 O-O 15. O-O Nd7 {Bernardara,E (1290)-Linden,W (1663) ICCF 2020 0-1 (42)}) 4... Be6 (4... a6 5. a4 (5. Bd3 e4 6. Bf1 axb5 7. Bxb5+ c6 8. Be2 Nd7 9. d3 Nc5 10. Nd2 Na4 11. Qc1 Nxb2 12. Qxb2 Ba3 13. Qc3 Bd6 14. Rb1 exd3 15. Bxd3 Rxa2 16. Ngf3 Ne7 {Walker,J (1932)-Beth, N (2096) ICCF 2011 0-1 (53)}) (5. h4 Be6 6. a4 Bd6 7. Nc3 c6 8. Qh5+ Bf7 9. Qg4 Bf8 10. Be2 Nh6 11. Qh3 Bb4 12. Nf3 O-O 13. O-O Re8 14. Na2 Be6 15. Qh1 Bf8 16. Nc3 Qc7 {Coope,D (1870)-Evans,C ICCF 2017 0-1 (66)}) 5... axb5 (5... c6 6. c4 Be6 7. cxd5 cxd5 8. Nc3 Bb4 9. Nf3 Ne7 10. Be2 O-O 11. O-O axb5 12. axb5 Rxa1 13. Qxa1 Nd7 14. d4 e4 15. Nd2 Nb6 16. Ba3 Bxa3 17. Qxa3 {Braak,J (1945) -Roldán,C (1813) ICCF 2011 1-0 (32)}) (5... Bb4 6. c4 d4 7. exd4 exd4 8. Bd3 Qe7+ 9. Qe2 c5 10. Na3 Be6 11. Be4 Kf7 12. Nf3 Nh6 13. O-O Re8 14. Nc2 Ba5 15. Rfe1 Bf5 16. Bd5+ Kf8 17. Qxe7+ {Frydendal,O (1843)-Jørgensen,B (1950) ICCF 2010 1-0 (40)}) 6. axb5 Rxa1 7. Bxa1 c5 (7... Be6 8. d4 (8. Nf3 Nd7 9. Be2 Bd6 10. d3 Ne7 11. c4 dxc4 12. dxc4 O-O 13. Nc3 Nc5 14. Nd2 f5 15. O-O Ng6 16. Nb3 Nxb3 17. Qxb3 e4 18. Rd1 Qh4 19. g3 Qh3 {Welti,M (2042)-Lumsdon,A (1740) ICCF 2014 1-0 (49)}) 8... exd4 (8... Nd7 9. dxe5 fxe5 10. Nf3 Bd6 11. c4 Bb4+ 12. Nbd2 dxc4 13. Qc1 Nb6 14. Bc3 Qe7 15. Be2 Nf6 16. O-O Qc5 17. Bxe5 O-O 18. Rd1 Kh8 19. Qb1 Bg8 20. Bxc7 {Ilzig,G-Kolanowski,M (2107) ICCF 2016 1/2 (67)}) 9. Bxd4 Bd6 10. Nf3 Ne7 11. Be2 O-O 12. O-O c5 13. bxc6 bxc6 14. c4 c5 15. Bb2 Nbc6 16. Na3 Nb4 17. Nb5 Bb8 18. cxd5 Nexd5 19. Qb1 {Muri,H (2378)-Jenkinson,S (2143) ICCF 2011 1-0 (48)}) 8. c4 (8. d4 cxd4 9. exd4 Qa5+ 10. Bc3 Bb4 11. Qd2 Qa2 12. Qc1 Bxc3+ 13. Nxc3 Qa5 14. Qd2 Be6 15. Nd1 Qxd2+ 16. Kxd2 Nd7 17. Ne2 Nh6 18. f4 e4 19. Ne3 Nb6 {Belov,P (2142)-Gusynin,I ICCF 2012 1/2}) 8... d4 9. Bb2 (9. Bd3 f5 10. exd4 exd4 11. Nf3 Nh6 12. O-O Be7 13. Re1 O-O 14. Bf1 Nf7 15. d3 g5 16. g3 Nd7 17. Bb2 h5 18. Bc1 g4 19. Nfd2 h4 20. f4 h3 {Muri,H (2309) -Mislin,R (2339) ICCF 2013 0-1 (39)}) (9. Qc2 g6 10. exd4 exd4 11. Nf3 Bd6 12. Be2 Nd7 13. O-O Ne5 14. d3 Qc7 15. Nbd2 Nxf3+ 16. Nxf3 b6 17. Bb2 Bb7 18. Re1 Ne7 19. g3 Kf7 20. Nd2 Ra8 {Frydendal,O (1834)-Nilssen,T (1808) ICCF 2011 1-0 (40)}) 9... g6 10. d3 Nh6 11. exd4 cxd4 12. Be2 Nd7 13. Nf3 Qc7 14. O-O Kf7 15. Nbd2 Nc5 16. Qc2 {Achermann,J (2156)-Haller,P (2180) ICCF 2018 1/2 (39)}) (4... Bd6 5. c4 c6 6. Qb3 Ne7 7. Nc3 Be6 8. bxc6 bxc6 9. cxd5 Nxd5 10. Bc4 Qb6 11. Bxd5 cxd5 12. Qxb6 axb6 13. Nb5 Kd7 14. Nxd6 Kxd6 15. Ne2 Na6 16. Ba3+ { Schulz,B (1920)-Devaux,V (1686) ICCF 2013 1-0 (27)}) (4... c5 5. a4 (5. c4 d4 6. d3 a6 7. exd4 cxd4 8. a4 axb5 9. cxb5 Bb4+ 10. Nd2 Ne7 11. Ngf3 Nd5 12. Ba3 Nc3 13. Qb3 Rxa4 14. Bb2 Rxa1+ 15. Bxa1 Qa5 16. Bb2 Qxb5 {Yeung,C (1740) -Selschotter,J ICCF 2006 0-1 (30)}) (5. d4 cxd4 6. exd4 e4 7. c4 Bb4+ 8. Bc3 Qa5 9. Bxb4 Qxb4+ 10. Qd2 Qxd2+ 11. Nxd2 Be6 12. cxd5 Bxd5 13. a4 b6 14. Bc4 Bxc4 15. Nxc4 Ne7 16. Nd6+ Kf8 {Martínez Muñoz,J-Toht,T (1986) ICCF 2012 1-0}) 5... Be6 6. c4 Ne7 7. Nf3 a6 8. d4 exd4 9. exd4 Nd7 10. Nc3 dxc4 11. d5 Bf7 12. Qe2 Nb6 13. O-O-O Bxd5 14. a5 Qd6 15. axb6 Qf4+ 16. Nd2 {Ringsborg,A (2280) -Ferreira,L (1892) ICCF 2020 1-0}) (4... Bd7 5. Nf3 c6 6. a4 c5 7. d3 a6 8. c4 d4 9. exd4 cxd4 10. Be2 Bb4+ 11. Nbd2 Bc3 12. Bxc3 dxc3 13. Ne4 Qa5 14. Qc2 axb5 15. Nd6+ Ke7 16. Nxb5 {Bray,P (1597)-Jones,S (1326) ICCF 2019 1/2 (55)}) ( 4... Nd7 5. a4 b6 6. Nf3 Bb7 7. d4 e4 8. Nfd2 Bd6 9. c4 Ne7 10. Nc3 f5 11. Be2 O-O 12. O-O Nf6 13. cxd5 Nexd5 14. Bc4 Kh8 15. Nxd5 Nxd5 16. Qb3 {Flewelling, H-Morgan,F (1716) ICCF 2013 1/2 (34)}) (4... c6 5. c4 Ne7 6. Bxe5 fxe5 7. cxd5 cxd5 8. Nc3 g6 9. h4 h6 10. Rc1 Bg7 11. h5 g5 12. Nf3 e4 13. Nd4 O-O 14. Be2 Bxd4 15. exd4 Qb6 16. Qa4 {Walker,J (1796)-Richardson,D (1702) ICCF 2016 1/2 (40)}) (4... e4 5. c4 Be6 6. cxd5 Qxd5 7. Nc3 Qd7 8. Nxe4 Ne7 9. Nc5 Qd5 10. Nxe6 Qxe6 11. Nf3 c6 12. bxc6 Nbxc6 13. Nd4 Nxd4 14. Bxd4 Nf5 15. Qa4+ Kd8 16. Bc4 {Wright,D (1618)-Dunham,D ICCF 2016 1-0}) 5. d4 (5. c4 dxc4 (5... c6 6. bxc6 (6. Qb3 Nd7 7. d4 Bd6 8. Nf3 Ne7 9. Nc3 O-O 10. Be2 Qe8 (10... Bf7 11. O-O exd4 12. exd4 dxc4 13. Bxc4 Nb6 14. Bxf7+ Rxf7 15. a4 Nbd5 16. bxc6 bxc6 17. Ne4 Rb8 18. Qc2 Bb4 19. Ba3 Bxa3 20. Rxa3 Nb4 21. Qd2 Ned5 22. Nc5 {Zhuravlev, K (2158)-Polubabin,V (2028) ICCF 2019 1/2 (36)}) 11. Ba3 Bxa3 12. Qxa3 e4 13. Nd2 f5 14. g3 g5 15. h4 g4 16. bxc6 bxc6 17. Rb1 dxc4 {Jamieson,I-Borwell,A (2207) ICCF 2007 1/2 (28)}) 6... Nxc6 7. cxd5 Qxd5 8. Nc3 Qd7 9. Nf3 Rd8 10. Rc1 Nge7 11. Be2 Nd5 12. O-O Nxc3 13. Bxc3 Bxa2 14. d4 e4 15. Nd2 Bd5 16. Qc2 Qe6 17. f3 {Morley,P (2241)-Niziolek,J (2117) ICCF 2007 1-0 (46)}) 6. Qc2 a6 ( 6... Nd7 7. Bxc4 Bxc4 8. Qxc4 Bc5 9. Nf3 Ne7 10. O-O c6 11. d4 cxb5 12. Qxb5 exd4 13. exd4 Bb6 14. Nbd2 O-O 15. Nc4 Rc8 16. Nd6 Rc7 17. Qb3+ Kh8 18. Nf7+ { Jamieson,I-Newton,A ICCF 2008 1-0 (41)}) (6... Ne7 7. Bxc4 Bxc4 8. Qxc4 Qd5 9. Qf1 Nd7 10. Nf3 Nc5 11. d4 Na4 12. Nc3 Nxc3 13. Bxc3 exd4 14. Rd1 Nf5 15. Qd3 Nd6 16. O-O Qxb5 17. Qxd4 Qc4 18. Qd2 {Taulien,H (2398)-Cijs,P (2365) ICCF 2009 }) 7. Bxc4 Bxc4 8. Qxc4 axb5 9. Qxb5+ Nd7 10. Nc3 c6 11. Qc4 Qe7 12. Nge2 Qb4 13. Qxb4 Bxb4 14. O-O Ne7 15. d4 exd4 16. Nxd4 Nc5 {Wilshusen,H (1799) -Compagnone,G (2195) ICCF 2010 0-1 (25)}) (5. Nf3 Bd6 (5... Nd7 6. a4 Bd6 7. d3 Ne7 8. c4 O-O 9. Be2 a6 10. Nc3 dxc4 11. dxc4 axb5 12. axb5 Rxa1 13. Qxa1 Qe8 14. O-O Nb6 15. Rc1 Nxc4 16. Bxc4 Bxc4 17. Nd2 {Thomsen,J-Malak,J (1901) ICCF 2012 0-1 (25)}) 6. c4 (6. d4 e4 7. Nfd2 f5 8. c4 c6 9. c5 Bc7 10. Qb3 Nd7 11. Nc3 Ndf6 12. Be2 Ne7 13. O-O O-O 14. Rfb1 Rb8 15. a4 Qd7 16. a5 b6 17. bxc6 Nxc6 {Bedbur,H (1879)-Himpel,R (1914) ICCF 2016 1-0}) 6... c6 7. bxc6 bxc6 8. Qa4 Ne7 9. cxd5 Nxd5 10. Na3 O-O 11. Nc4 c5 12. a3 Bc7 13. Qc2 Nc6 14. d3 Nb6 15. Ncd2 Qe7 16. Rc1 Nd7 {Nicotera,A-Di Pietro,R (1667) ICCF 2011 1-0 (34)}) 5... Nd7 (5... e4 6. Nd2 (6. c4 dxc4 (6... c6 7. Nc3 Bb4 8. Qb3 Ba5 9. bxc6 Nxc6 10. Nh3 Bxh3 11. gxh3 Nge7 12. cxd5 Nxd5 13. Bc4 Nxc3 14. Bxc3 Bxc3+ 15. Qxc3 Qd7 16. Qc2 f5 17. O-O Na5 18. Rac1 {Blechar,M (2230)-Johansson,C (2188) ICCF 2007 1-0 (49)}) 7. Qc2 (7. Nd2 Bb4 8. Rc1 a6 9. Bxc4 Bxc4 10. Rxc4 Bxd2+ 11. Kxd2 Ne7 12. a4 axb5 13. Qh5+ Kd7 14. Qxb5+ Nbc6 15. Nh3 Kc8 16. Rb1 Ra6 17. Ke1 Kb8 18. Nf4 Rb6 {Blechar,M (2230)-Merrow,C ICCF 2007 0-1 (28)}) 7... Ne7 8. Qxe4 (8. Bxc4 Bxc4 9. Qxc4 Qd5 10. Qa4 Nd7 11. Nc3 Qg5 12. g3 Nd5 13. Nge2 N7b6 14. Qc2 Qg6 15. Qxe4+ Qxe4 16. Nxe4 a6 17. bxa6 Rxa6 18. O-O Nc4 19. Rfb1 b6 {Degterev,P (2530)-Podvoysky,E ICCF 2007 1/2 (48)}) 8... Bf5 9. Qxb7 Nbc6 10. Bc3 Rb8 11. Qa6 Rb6 12. Qa4 Nd5 13. Bxc4 Bxb1 14. Ne2 Be4 15. O-O Nce7 16. Ba5 Qd7 17. Ng3 Bg6 {Marquardt,G (2198)-Walther,J (2189) ICCF 2018 1-0}) ( 6. Be2 Bd6 7. Nd2 Ne7 8. Bg4 Bxg4 9. Qxg4 O-O 10. Qe6+ Kh8 11. Ne2 Nd7 12. c4 c6 13. Qxd6 Nc8 14. Qb4 Re8 15. a4 Ne7 16. O-O Ng6 17. Ng3 a5 {Tago,S (1608) -Kanesaka,R (1666) ICCF 2015 1-0 (35)}) 6... c6 (6... f5 7. c4 a6 (7... dxc4 8. Bxc4 Bxc4 9. Nxc4 Bb4+ 10. Kf1 Nf6 11. Qb3 Nd5 12. Nh3 a5 13. Ne5 a4 14. Qc4 Rf8 15. Nf4 Nxf4 16. exf4 a3 17. Qxb4 axb2 18. Qxb2 Qd5 19. Ke2 {Haznedaroglu, K (1990)-Gavrijski,D (2010) ICCF 2006 1-0 (47)}) 8. Nh3 Nf6 9. Qb3 axb5 10. Qxb5+ Nc6 11. Bc3 Bd7 12. Qb2 b6 13. Nf4 Ba3 14. Qb3 Ne7 15. cxd5 Bd6 16. Ne6 Bxe6 17. dxe6 c6 18. Nc4 {Kural,A (2001)-Karg,H (2462) ICCF 2007 0-1 (31)}) ( 6... Bd6 7. c4 c6 8. Qb3 Qd7 9. bxc6 bxc6 10. Rb1 Nh6 11. cxd5 cxd5 12. Bb5 Nc6 13. Rc1 Rc8 14. Qa4 O-O 15. Bxc6 Rxc6 16. Qxc6 Rc8 17. Qxc8+ Qxc8 18. Rxc8+ { Mai,W (2025)-Kayaalp,B (1727) ICCF 2012 1-0}) 7. a4 (7. Ne2 Bd6 8. c4 Ne7 9. Nc3 O-O 10. Be2 (10. Qb3 f5 11. Be2 Rf6 12. g3 Nd7 13. O-O Rh6 14. f4 Nf6 15. c5 Bc7 16. Rfb1 Bf7 17. Nf1 Bh5 18. Bxh5 Rxh5 19. bxc6 bxc6 20. Qa4 a5 21. Nd1 Qc8 {Rudbeck,J (2407)-Hauser,S (2356) ICCF 2005 1-0 (71)}) 10... Nd7 11. Qb3 f5 12. O-O Nf6 13. a4 dxc4 14. Nxc4 Bb8 15. Ba3 Qc7 16. g3 Rc8 17. Rfc1 Qd7 18. Qb2 Ned5 {Feldborg,B (2185)-Laursen,B (2141) ICCF 2010 1-0 (47)}) 7... Bd6 8. c4 Nd7 (8... f5 9. Ba3 (9. Nh3 Nf6 10. Ba3 Bxa3 11. Rxa3 O-O 12. c5 a6 13. b6 Nbd7 14. Nf4 Bf7 15. h4 Re8 16. Be2 Nf8 17. Nf1 Ne6 18. Ng3 Nxf4 19. exf4 Be6 20. h5 h6 {Wantoch-Rekowski,J (2246)-Mitrescu,M ICCF 2008 1/2 (36)}) 9... Nf6 10. Bxd6 Qxd6 11. c5 Qc7 12. Nh3 O-O 13. Be2 Nbd7 14. O-O Ng4 15. Bxg4 fxg4 16. Nf4 Bf5 17. Qb3 Nf6 18. a5 a6 19. bxc6 bxc6 20. Rfb1 {Wantoch-Rekowski,J (2322) -Acedanski,J (2375) ICCF 2007 1/2 (29)}) (8... Ne7 9. Qb3 Bf7 10. c5 Bc7 11. Ne2 Nd7 12. Qc2 O-O 13. Nb3 f5 14. Bc3 g5 15. O-O-O f4 16. g4 Ng6 17. Bd2 Be6 18. h3 cxb5 19. axb5 b6 20. Bb4 {Blake,N-Ruthen,S (2083) ICCF 2015 1/2 (30)}) 9. a5 (9. c5 Bc7 10. Ne2 f5 11. Nf4 Bf7 12. g3 Rb8 13. Be2 Ne7 14. h4 O-O 15. Bc3 Kh8 16. Rb1 Nf6 17. h5 Neg8 18. a5 Bxf4 19. gxf4 cxb5 20. Rxb5 Be8 { Muri,H (2378)-Compagnone,G (2203) ICCF 2011 0-1 (79)}) 9... Ne7 10. a6 Qc8 11. Qb3 bxa6 12. bxc6 Qxc6 13. c5 Rb8 14. Qc2 O-O 15. Nb3 Bc7 16. Rxa6 Qb7 17. Rxe6 {Muri,H (2335)-Compagnone,G (2289) ICCF 2013 1-0 (52)}) (5... exd4 6. exd4 (6. Bxd4 a6 7. a4 Bb4+ 8. Nd2 Ne7 9. Ngf3 c5 10. c3 cxd4 11. Nxd4 Bxc3 12. Nxe6 Qa5 13. Rc1 Nd7 14. Rc2 Kf7 15. Nf4 Rhc8 16. Qh5+ Kg8 17. Nxd5 Bxd2+ {Zhuravlev,K (2189)-Istomin,A (2194) ICCF 2017 1/2}) (6. Qxd4 a6 7. Ne2 axb5 8. Nf4 Bf7 9. Bxb5+ c6 10. Be2 Nh6 11. O-O Bd6 12. Qd1 O-O 13. Nd2 Re8 14. g3 b5 15. c3 Qb6 16. Nd3 Ra4 17. Nf4 Rd8 {Recasens Sánchez,J (2124)-Aguiar García,J ICCF 2008 0-1 (27)}) 6... a6 (6... Bd6 7. Nf3 Ne7 8. Nbd2 a6 9. a4 O-O 10. c4 dxc4 11. Bxc4 Bxc4 12. Nxc4 Bb4+ 13. Ncd2 axb5 14. axb5 Rxa1 15. Bxa1 Qd5 16. O-O Qxb5 17. Qb3+ Nd5 18. Bc3 {Ramos Mora,J (1749)-Huguet Reina,C (1911) ICCF 2019 0-1 (40)}) 7. Nd2 axb5 8. Bxb5+ c6 9. Bd3 Bd6 10. Ngf3 Ne7 11. O-O O-O 12. c4 Qd7 13. c5 Bf4 14. Re1 Na6 15. Qb1 g6 16. Bc1 Bf5 17. Nf1 {Nicotera,A-Zazzeri,M ICCF 2011 1-0 (78)}) (5... Bb4+ 6. c3 Bd6 7. dxe5 fxe5 8. Nf3 Nf6 9. Be2 O-O 10. O-O h6 11. c4 Nbd7 12. cxd5 Nxd5 13. Nbd2 N5b6 14. a4 a5 15. bxa6 bxa6 16. a5 Nd5 17. Nc4 {Daatselaar,J (2233)-Bonatti,A (2024) ICCF 2006 1-0 (33)}) (5... Bd6 6. dxe5 fxe5 7. Bxe5 Bxe5 8. Qh5+ g6 9. Qxe5 Qf6 10. Nf3 Qxe5 11. Nxe5 Nf6 12. Nd2 Bf5 13. Bd3 Bxd3 14. cxd3 Nbd7 15. Nef3 Nc5 16. Ke2 O-O-O 17. Nb3 { Reinhart,K (2471)-Hanamitsu,I (1811) ICCF 2006 1-0 (35)}) 6. dxe5 (6. Nd2 c6 ( 6... Bd6 7. c4 c6 (7... Bb4 8. cxd5 Bxd5 9. a3 Ba5 10. Ne2 Ne7 11. Nc3 Bxc3 12. Bxc3 exd4 13. Bxd4 O-O 14. Bd3 Bxg2 15. Rg1 c5 16. Rxg2 cxd4 17. Qg4 g6 18. Qxd4 Kh8 19. Be4 {Wantoch-Rekowski,J (2288)-Jína,J (2113) ICCF 2006 1/2 (61)}) 8. a4 Ne7 9. c5 Bc7 10. Ne2 O-O 11. Nc3 f5 12. Ne2 f4 13. exf4 exf4 14. Nf3 Ng6 15. Qd2 Ba5 16. Bc3 Bxc3 17. Nxc3 Bg4 18. Be2 {Vysniauskas,V-Davidavicius,R (2206) ICCF 2005 0-1 (32)}) 7. dxe5 fxe5 8. Ngf3 Bd6 9. Nc4 Qc7 10. Ng5 Bf5 11. e4 dxc4 12. exf5 Ngf6 13. Bxc4 cxb5 14. Bb3 Qa5+ 15. Kf1 Qb6 16. Qe2 Rc8 17. Nf7 Rf8 {Balañá Romero,R (1772)-González Solé,F (1752) ICCF 2012 1-0 (26)}) (6. Nc3 Bb4 7. a3 Ba5 8. Nf3 e4 9. Nd2 c6 10. Nb3 Bc7 11. Na4 Qc8 12. bxc6 bxc6 13. Nac5 Nxc5 14. Nxc5 a5 15. c4 Ne7 16. cxd5 Bxd5 17. Qh5+ g6 {Walker,J (1932) -Glanville,C (2096) ICCF 2011 1/2 (35)}) (6. Be2 Bd6 (6... e4 7. a4 Bd6 8. Nd2 c6 9. c4 Bb4 10. Qc2 Ne7 11. c5 Qa5 12. Bd1 b6 13. bxc6 Nxc6 14. cxb6 Nxb6 15. Ne2 Rc8 16. Nc3 Nxd4 17. exd4 Bxc3 18. Bxc3 {Tago,S (1692)-Saitou,A (2224) ICCF 2016 0-1 (30)}) 7. c4 dxc4 8. Nf3 Bb4+ 9. Nc3 {1-0 (9) Vegjeleki,A (2313) -Akman,O ICCF 2006}) (6. Ne2 c5 7. Nec3 cxd4 8. exd4 e4 9. Be2 f5 10. Qd2 Ngf6 11. h4 Bb4 12. Kf1 O-O 13. Ba3 Bxa3 14. Nxa3 f4 15. Kg1 Qe7 16. Nab1 Qd6 17. a3 Rae8 {Balañá Romero,R (1900)-Riquelme Pereira,C ICCF 2016 0-1 (30)}) (6. Nf3 e4 7. Nfd2 f5 8. c4 Ngf6 (8... c6 9. Be2 Ngf6 10. O-O Be7 11. f3 O-O 12. a4 exf3 13. Rxf3 Qc7 14. Rf1 Bd6 15. Nf3 Ng4 16. Ne5 Nxe3 17. Qe1 Nc2 18. Qg3 Nxa1 19. Bxa1 dxc4 20. Nc3 {Tago,S-Hasidume,S (1868) ICCF 2008 0-1 (27)}) 9. g3 Be7 10. Nc3 O-O 11. c5 c6 12. a4 b6 13. cxb6 Qxb6 14. a5 Qc7 15. bxc6 Qxc6 16. Ba3 Bxa3 17. Rxa3 Rab8 {Frydendal,O (1848)-Daróczy,S (2044) ICCF 2010 0-1 (30)}) 6... fxe5 7. Nf3 (7. Be2 Ngf6 8. Nf3 Bd6 9. c4 Qe7 10. O-O O-O-O 11. Nbd2 Bf7 12. a4 h5 13. Ng5 Bg8 14. cxd5 e4 15. h4 Bxd5 16. Qc2 Nc5 17. Bd4 Ne6 18. Nxe6 Qxe6 { Kural,A (2194)-Önem,C (1994) ICCF 2010 1-0}) 7... Bd6 8. Nbd2 Ngf6 9. c4 c6 ( 9... O-O 10. cxd5 Bxd5 11. Bc4 Bxc4 12. Nxc4 Bb4+ 13. Ncd2 Kh8 14. O-O a6 15. a4 Qe7 16. Qc2 e4 17. Nd4 Nc5 18. Nf5 Qd7 19. Nd4 Qd5 20. Bc3 Bxc3 21. Qxc3 { Welti,M (2042)-Tassone,R (2196) ICCF 2014 1/2 (60)}) 10. Be2 O-O 11. Ng5 (11. O-O Qe7 12. Rc1 cxb5 13. cxd5 Bxd5 14. Bxb5 e4 15. Nd4 Qe5 16. g3 Bc5 17. Bc4 Rf7 18. Qb3 Bxc4 19. Nxc4 Qh5 20. h4 Re8 21. Nb5 Re6 22. Rcd1 Bf8 {Muri,H (2405)-Destruels Moreno,V (2405) ICCF 2008 1-0 (34)}) 11... Qe7 (11... Bf5 12. cxd5 Nxd5 13. h4 Nc5 14. e4 Bg4 15. O-O Bxe2 16. Qxe2 Nf4 17. Qc4+ Kh8 18. g3 Nfd3 19. Ba3 cxb5 20. Nf7+ Rxf7 21. Qxf7 b4 22. Bc1 Rc8 23. a3 {Cottarelli,F (2143)-Rawlings,A (2210) ICCF 2007 1/2 (37)}) 12. Nxe6 Qxe6 13. O-O Nc5 14. Rc1 Rac8 {Brisson,P (2102)-Blondel,F (1963) ICCF 2011 1/2 (28)}) (3. a3 d5 (3... c5 4. Nc3 (4. c3 d6 5. e4 Bd7 6. bxc5 dxc5 7. Bc4 Bc6 8. d3 Nh6 9. a4 f5 10. f3 f4 11. Ne2 Qa5 12. O-O Be7 13. d4 Qb6 14. Qd2 Bf6 15. d5 Bd7 {Bray,P (1619)-Jones, S (1400) ICCF 2019 0-1 (117)}) 4... cxb4 5. axb4 Bxb4 6. e4 Bxc3 7. Bxc3 { 1-0 (7) Hasidume,S (2207)-Secer,A ICCF 2007}) (3... Nc6 4. c4 d6 5. e3 Bd7 6. Nc3 g6 7. Nf3 Qe7 8. Nh4 O-O-O 9. b5 Na5 10. Qa4 b6 11. Nd5 Qe6 12. Bc3 c6 13. Bxa5 cxb5 14. Qb4 Kb7 15. a4 {Walker,J (1761)-White,C (1793) ICCF 2015 1-0}) ( 3... d6 4. e3 Be6 5. d4 c6 6. Nd2 Nd7 7. Ngf3 d5 8. dxe5 fxe5 9. Nxe5 Nxe5 10. Bxe5 Nf6 11. c4 Bd6 12. Bd4 O-O 13. c5 Be7 14. Bd3 Qc7 15. Qc2 {Aymard,M (2010) -Hanamitsu,I (1811) ICCF 2006 1-0 (25)}) 4. e3 (4. d3 Nh6 5. Nd2 a5 6. c3 Bd6 7. Ngf3 O-O 8. g3 Be6 9. Bg2 Nd7 10. O-O c6 11. Qc2 Nf7 12. e4 b5 13. Rfd1 Nb6 14. Nb3 axb4 15. axb4 dxe4 {Coope,D (1921)-Trs,J (2155) ICCF 2017 1/2 (59)}) ( 4. d4 Bd6 5. dxe5 fxe5 6. Nf3 Be6 7. Bxe5 Bxe5 8. Nxe5 Nd7 9. Nf3 Ngf6 10. Nc3 Ne4 11. Nxd5 c6 12. Ne3 Qf6 13. Qd4 Qxd4 14. Nxd4 Bd5 15. c4 Bf7 {Ling,A (2062) -Hanamitsu,I (1811) ICCF 2006 1-0}) 4... Be6 (4... Bd6 5. c4 Be6 (5... c6 6. Be2 (6. cxd5 cxd5 7. Nc3 Ne7 8. Qh5+ Kf8 9. Nb5 g6 10. Qd1 Kg7 11. Nf3 a5 12. Nxd6 Qxd6 13. b5 Bg4 14. Be2 e4 15. Nd4 Bxe2 16. Nxe2 Nd7 17. O-O Ne5 {Szabo,A (2310)-Dumitrica,S ICCF 2006 1-0 (54)}) 6... Ne7 7. Nf3 Be6 8. Nc3 O-O 9. O-O Nd7 10. Qb3 Bf7 11. d3 a5 12. d4 e4 13. Nd2 f5 14. g3 Ng6 15. cxd5 axb4 16. axb4 cxd5 17. Rxa8 {Fagerbekk,E (2215)-Hamilton,D (2077) ICCF 2013 1-0 (34)}) ( 5... dxc4 6. Bxc4 Ne7 7. Nc3 Bf5 8. Nf3 Nd7 9. Nh4 Bg6 10. Nxg6 hxg6 11. Ba2 a5 12. Qb3 Rf8 13. Ne4 Nb6 14. O-O a4 15. Qc2 Nf5 16. d4 exd4 17. Bxd4 {Bjazevic, P (2245)-Yeung,C (1642) ICCF 2008 1-0}) 6. cxd5 (6. Qc2 Nc6 7. c5 Be7 8. Ne2 Nh6 9. d3 O-O 10. Nd2 a6 11. h3 Qd7 12. d4 Rae8 13. Nf3 Nf7 14. Ng3 e4 15. Nd2 a5 16. b5 Na7 17. a4 b6 {Haznedaroglu,K (2293)-Yeung,C (1642) ICCF 2008 1/2}) 6... Bxd5 7. Nc3 Be6 8. Nf3 Nh6 9. d4 Nd7 10. Bd3 O-O 11. Nb5 Qe7 12. Qc2 g6 13. O-O Bg4 14. Rac1 Rad8 15. Nxd6 cxd6 16. Qc7 {Hoch,H (2210)-Roberts,D ICCF 2006 1-0}) (4... Bf5 5. Nf3 Nd7 (5... Bd6 6. c4 c6 7. cxd5 cxd5 8. Nc3 Ne7 9. d4 e4 10. Nd2 a6 11. Qb3 Bc7 12. Rc1 Bg6 13. b5 Bf7 14. a4 O-O 15. Ba3 Bd6 16. Be2 Bxa3 17. Qxa3 {Williams,B-Lindberg,W (1591) ICCF 2004 1-0 (45)}) 6. Nc3 c6 7. Bd3 e4 8. Nd4 Nh6 9. Be2 Qb6 10. g4 Bg6 11. Ne6 Bf7 12. Na4 Qb5 13. Nc7+ Kd8 14. Nxb5 cxb5 15. Bxb5 Ne5 16. Bxe5 {Domenche Redondo,F (1789)-Sanchez Aguirregomezcorta,X (1297) ICCF 2017 1-0 (32)}) (4... a5 5. b5 Be6 6. d4 Nd7 7. Nd2 exd4 8. exd4 Qe7 9. Be2 a4 10. Ngf3 Qf7 11. Bd3 Bd6 12. c4 dxc4 13. Nxc4 Bxc4 14. Qe2+ Qe7 15. Bxc4 Qxe2+ 16. Bxe2 {Hoch,H (2210)-Barnett,C (2328) ICCF 2006 0-1 (66)}) (4... c5 5. d4 (5. bxc5 Bxc5 6. d4 exd4 7. exd4 Qb6 8. Ra2 Qe6+ 9. Be2 Bd6 10. Nf3 Ne7 11. O-O O-O 12. c4 dxc4 13. Nbd2 b5 14. Re1 Qf7 15. Ne4 Rd8 16. Nxd6 Rxd6 {León Ayllon,F-González Barcina,F (2036) ICCF 2005 0-1 (34)}) 5... exd4 6. exd4 Qe7+ {0-1 (6) Akman,O-Yeung,C (1740) ICCF 2006}) (4... Ne7 5. Nf3 a5 6. b5 Be6 7. d4 e4 8. Nfd2 g6 9. c4 f5 10. Nc3 Bg7 11. cxd5 Nxd5 12. Qb3 Nf4 13. Qc2 Nd5 14. Bc4 c6 15. Qb3 Qd7 16. a4 {Stapinski,R (1744)-Gérard,A (1741) ICCF 2020 1-0 (25)}) 5. d4 (5. Nf3 Nd7 (5... c6 6. Be2 Bd6 7. d3 a5 8. c3 Ne7 9. Nbd2 O-O 10. O-O Nd7 11. Ne1 b5 12. bxa5 Qxa5 13. Nc2 Nc5 14. c4 bxc4 15. dxc4 Rfb8 16. Nb4 Na4 17. Bc1 {Dolejs,D (1851)-Williams,J (1833) ICCF 2016 0-1 (27)}) (5... Bd6 6. d3 (6. d4 e4 7. Nfd2 f5 8. c4 c6 9. Nc3 Nf6 10. cxd5 Nxd5 11. Bc4 Qg5 12. O-O Qh4 13. g3 Qg5 14. Qb3 Nxe3 15. fxe3 Bxg3 16. Bxe6 Qxe3+ 17. Kg2 Qxd2+ {Gallach Pérez,Y-Darias Mateos,A ICCF 2006 1-0}) 6... c6 7. c4 Ne7 8. Nc3 O-O 9. Be2 Qe8 10. O-O Nd7 11. Nd2 Qg6 12. cxd5 Nxd5 13. Nce4 Bc7 14. Nb3 f5 15. Nec5 Nxc5 16. Nxc5 Bc8 17. Rc1 {Sowden,E (2297)-Morris,G (2166) ICCF 2005 1-0 (58)}) 6. d4 (6. Be2 Bd6 7. O-O a5 8. b5 Ne7 9. Nc3 O-O 10. a4 Nb6 11. d4 e4 12. Nd2 Qe8 13. f3 Nf5 14. fxe4 Nxe3 15. Qc1 Nxf1 16. Nxf1 dxe4 17. Nxe4 Bd5 {Neumann,F (1571)-González Sánchez,F ICCF 2008 0-1 (30)}) 6... e4 7. Nfd2 f5 8. c4 Ngf6 9. Be2 c6 10. cxd5 Nxd5 11. Nc3 Bd6 12. Nxd5 cxd5 13. Nb3 b6 14. Rc1 O-O 15. Rc6 Nf6 16. O-O Qd7 {Flewelling,H (1760)-Dimitrov,G ICCF 2018 0-1 (27)}) (5. d3 Bd6 6. g3 Nh6 7. Bg2 c6 8. Nd2 O-O 9. Ne2 a5 10. bxa5 Qxa5 11. O-O Qb6 12. Qc1 Nd7 13. c4 Nc5 14. Qc2 Qa6 15. d4 Bf5 16. e4 Nxe4 { Haznedaroglu,K (2293)-Zylla,J (2267) ICCF 2008 0-1}) (5. c4 dxc4 6. Qc2 b5 7. d3 Bf5 8. e4 cxd3 9. Bxd3 Bd7 10. Nf3 Bd6 11. O-O Ne7 12. Rd1 O-O 13. a4 bxa4 14. b5 Bg4 15. Be2 Qe8 16. Nc3 Nd7 {Degterev,P (2346)-Leontiev,G (2391) ICCF 2006 1-0 (71)}) 5... Nd7 (5... exd4 6. exd4 a5 7. b5 Bd6 8. Nd2 Nd7 9. c4 Qe7 10. c5 Bf4 11. g3 Bh6 12. Bg2 Bg4+ 13. Ne2 f5 14. Nf3 Ngf6 15. Bc1 Bxc1 16. Rxc1 O-O 17. O-O {Avchinikov,V-Dijk,E (2207) ICCF 2014 1-0 (46)}) (5... e4 6. c4 (6. Nd2 Bd6 7. c4 c6 8. c5 Bc7 9. b5 Ne7 10. Qb3 Bf7 11. a4 O-O 12. Be2 Re8 13. Nh3 Nd7 14. O-O Qb8 15. g3 b6 16. cxb6 axb6 17. bxc6 Nxc6 {León Ayllon, F-Bernad Suárez,A (2035) ICCF 2005 0-1 (49)}) 6... c6 7. Ne2 f5 8. Nf4 Bf7 9. c5 Nf6 10. Nc3 Be7 11. Be2 O-O 12. h4 Qc8 13. a4 Bd8 14. b5 Bc7 15. Nh3 Ba5 16. Ng5 Be8 17. Ra3 {Stapinski,R (2035)-Wegiel,I ICCF 2008 1/2 (28)}) 6. dxe5 (6. Nd2 Bd6 7. c4 c6 8. dxe5 Bxe5 9. Qb1 Ne7 10. Ngf3 Bf5 11. Qc1 Rc8 12. Be2 O-O 13. O-O Qe8 14. Rd1 Qf7 15. Bd4 Bb8 16. Qb2 Ng6 17. Rac1 Nde5 {Avchinikov, V-Garau,B (2288) ICCF 2014 1/2 (53)}) 6... Nxe5 7. Nd2 a5 (7... Bd6 8. Ngf3 Ne7 9. c4 Nxf3+ 10. Nxf3 dxc4 11. Rc1 c3 12. Bxc3 O-O 13. Bd3 Qd7 14. Qc2 g6 15. Nd4 Bf7 16. Nb5 Nd5 17. Nxd6 Qxd6 18. Bb2 Rfd8 19. Bc4 {Müller,D (2366) -Pontoppidan,E (1896) ICCF 2016 1-0 (43)}) 8. Bxe5 fxe5 9. Qh5+ g6 10. Qxe5 Qf6 11. Qxf6 Nxf6 12. b5 Bg7 13. Ne2 Ng4 14. Rd1 O-O {Nigiel,P (2216)-Borwell,A (2221) ICCF 2012 1-0 (45)}) (3. e3 Bxb4 4. Bxe5 (4. Bd3 d5 5. Ne2 e4 6. Bb5+ c6 7. Ba4 Ne7 8. O-O O-O 9. Ng3 Nd7 10. Bb3 Nc5 11. a3 Nxb3 12. cxb3 Bd6 13. Nh5 Qe8 14. Bxf6 gxf6 15. f4 Qg6 {Nelson,J (1590)-Carrettoni,A (2151) ICCF 2016 0-1 (25)}) (4. Nf3 d5 5. c4 Nc6 6. a3 Ba5 7. Qa4 Bd7 8. cxd5 {1-0 (8) Bonatti, A (1736)-Radzinski,S (1744) ICCF 2017}) 4... fxe5 5. Qh5+ Kf8 6. Qxe5 Qf6 7. Nf3 Nc6 8. Qxf6+ Nxf6 9. Be2 d5 10. O-O g6 11. a3 Bd6 12. d4 Be6 13. Nbd2 Ne5 14. Rfb1 b6 {Bedbur,H (1879)-Neelmeier,S (1721) ICCF 2016 0-1 (31)}) 3... Bxb4 (3... d5 4. exd5 (4. f4 exf4 5. Qh5+ g6 6. Qxd5 Qxd5 7. exd5 Bxb4 8. Bc4 Nd7 9. Ne2 Ne5 10. Bb3 f3 11. gxf3 Nxf3+ 12. Kf2 Nxd2 13. Nxd2 Bxd2 14. Kg2 Bb4 15. Ng3 h5 {Cooper,R (2046)-Cacko,J (2162) ICCF 2013 0-1 (31)}) 4... Bxb4 5. c4 c6 6. a3 Ba5 7. Bd3 Ne7 8. Qb3 Na6 9. Ne2 Nc5 10. Qc2 cxd5 11. O-O e4 12. cxd5 Nxd3 13. Bc3 Bb6 14. Qa4+ Kf7 15. Qxe4 {Meara,P-Korchut,A (2059) ICCF 2014 0-1 (28)}) 4. Bc4 (4. a3 Bc5 5. Nf3 Ne7 6. Bc4 c6 7. d4 d5 8. exd5 exd4 9. dxc6 Nbxc6 10. Nbd2 Bg4 11. O-O Qc7 12. h3 Bh5 13. Be6 Rd8 14. Qe2 Ne5 15. Bb3 N7c6 {Taulien,H (2391)-Schulz,K ICCF 2008 0-1 (31)}) (4. f4 Nh6 5. Bc4 Qe7 6. Qh5+ Kd8 7. fxe5 d6 8. Qe2 Bg4 9. exf6 gxf6 10. Nf3 Nc6 11. Bd5 Nd4 12. Bxd4 c6 13. h3 Bxf3 14. Qxf3 Rf8 15. Bb3 Kc7 {Dam,J (1639)-Kloos-Kämink,M ICCF 2017 1-0}) 4... Ne7 (4... Nc6 5. f4 (5. a3 Ba5 6. f4 Qe7 7. Nc3 exf4 8. Qe2 Bxc3 9. Bxc3 d6 10. Rb1 Ne5 11. Bb3 Nh6 12. Nf3 b6 13. d4 Nxf3+ 14. Qxf3 Be6 15. Ba4+ Bd7 16. Bb3 O-O-O {Kural,A (2380)-Vasilev,V (2485) ICCF 2016 1/2}) (5. c3 Be7 6. d4 Na5 7. Bxg8 Rxg8 8. dxe5 Kf8 9. Nf3 Nc6 10. c4 Bb4+ 11. Nbd2 d6 12. exd6 Bxd6 13. O-O Kf7 14. e5 Nxe5 15. Nxe5+ fxe5 16. c5 Bxc5 {Cooper,R (2118)-Colebrook, M (1815) ICCF 2017 1-0}) 5... Qe7 (5... d6 6. c3 (6. Qh5+ g6 7. Qh4 Qe7 8. Nc3 Bxc3 9. Bxc3 Be6 10. Bxe6 Qxe6 11. d3 O-O-O 12. Nf3 h6 13. O-O Nge7 14. Qf2 g5 15. f5 Qf7 16. Rab1 g4 17. Nd2 h5 {Skerlík,S (2352)-Destruels Moreno,V (2408) ICCF 2007 1-0}) (6. f5 g6 7. Qf3 Qd7 8. g4 Qg7 9. Ne2 Bd7 10. Nbc3 Nge7 11. O-O-O h5 12. h3 O-O-O 13. a3 Bc5 14. Na4 Bb6 15. Nxb6+ axb6 16. Bc3 Kb8 17. Kb2 Rh7 {Skerlík,S (2332)-Leben,D (2353) ICCF 2008 0-1 (60)}) 6... Bc5 7. d4 exd4 8. cxd4 Bb4+ 9. Kf1 Nge7 10. d5 Na5 11. Qa4+ Bd7 12. Qxb4 Nxc4 13. Qxc4 O-O 14. Nf3 f5 15. e5 b5 16. Qd4 Ng6 17. e6 {Bjazevic,P-Hanamitsu,I (1811) ICCF 2006 1-0}) 6. f5 Nh6 (6... g6 7. Ne2 Na5 8. Bd5 c6 9. a3 Bc5 10. Ba2 d5 11. exd5 Bxf5 12. Nbc3 O-O-O 13. Ng3 Nh6 14. dxc6 Nxc6 15. Nge4 Nd4 16. d3 Bxe4 17. Nxe4 f5 18. Nxc5 {Jean,L (1868)-Simonet,D (1745) ICCF 2014 0-1 (33)}) 7. Nc3 (7. Qh5+ Nf7 8. a3 Ba5 9. Nc3 O-O 10. Nd5 Qc5 11. Bb3 b6 12. Nf3 Ba6 13. O-O-O Bc4 14. Bxc4 Qxc4 15. d3 Qc5 16. g4 b5 17. Rdg1 b4 18. g5 Nxg5 {Buczinski,H (2208) -Rotaru,I (2206) ICCF 2012 1-0 (34)}) 7... Bxc3 8. Bxc3 b6 9. d3 Nf7 10. Ne2 g6 11. Bd5 gxf5 12. Ng3 f4 13. Nf5 Qc5 14. Qd2 Nd6 15. Nxd6+ Qxd6 16. O-O-O { Nicklich,W (2242)-Sienkiewicz,W (2154) ICCF 2011 0-1 (54)}) (4... Qe7 5. Ne2 d6 (5... Nh6 6. O-O Nf7 7. c3 Bc5 8. d4 Bb6 9. Ng3 d6 10. a4 c6 11. f4 exf4 12. Rxf4 O-O 13. Nd2 g6 14. Rf2 Kg7 15. Qc2 Be6 16. Bxe6 Qxe6 17. Ne2 {Kural,A (2178)-Önem,C (2015) ICCF 2010 1-0 (33)}) 6. c3 (6. O-O Be6 7. Bxe6 Qxe6 8. d4 Ba5 9. Qd3 Nd7 10. Na3 Ne7 11. Nc4 Bb6 12. Nxb6 axb6 13. Qc3 c6 14. Qb3 Qxb3 15. axb3 Kf7 16. c4 exd4 17. Nxd4 Nc5 {Daatselaar,J (2203)-Wegman,W (2167) ICCF 2007 1/2 (52)}) 6... Bc5 7. Qb3 Nh6 8. d4 Bb6 9. a4 a6 10. a5 Ba7 11. Nd2 Nf7 12. O-O Nc6 13. Kh1 O-O 14. f4 Kh8 15. f5 Rb8 16. Qc2 {Morley,P (2270) -Bonoldi,F (1993) ICCF 2008 1-0 (44)}) (4... d6 5. c3 (5. Qh5+ g6 6. Qf3 Nc6 7. a3 Bc5 8. Ne2 f5 9. Nbc3 Nf6 10. exf5 Bxf5 11. Na4 Bb6 12. O-O Bxc2 13. Nxb6 axb6 14. d4 Be4 15. Qc3 Qe7 16. dxe5 dxe5 {Reinhart,K (2471)-Aymard,M (2010) ICCF 2006 1-0 (60)}) 5... Ba5 6. d4 Ne7 7. Nf3 Nbc6 8. O-O Bb6 9. Nbd2 Na5 10. a4 Qd7 11. Ba2 Qg4 12. Nc4 Qg6 13. Nfd2 Bh3 14. Qf3 Bg4 15. Qe3 Bd7 16. Nxa5 { Bjazevic,P-Aymard,M (2010) ICCF 2006 1-0 (60)}) 5. Qh5+ g6 (5... Ng6 6. f4 (6. Nf3 c6 7. Nh4 Ke7 8. Nxg6+ hxg6 9. Qxg6 Qf8 10. c3 Rh6 11. Qg3 Bc5 12. O-O b5 13. Bb3 Bd6 14. d3 Na6 15. Nd2 Nc5 16. Ba3 Nxb3 17. Bxd6+ Kxd6 {Richardson,D (1698)-Cochrane,R ICCF 2014 1/2 (38)}) 6... exf4 7. a3 (7. Nf3 Nc6 (7... Qe7 8. O-O Qc5+ 9. Qxc5 Bxc5+ 10. Kh1 d5 11. Bxd5 Bd6 12. Nc3 c6 13. Bb3 Na6 14. d4 Bg4 15. Rae1 Bxf3 16. gxf3 O-O-O 17. Ne2 Rhe8 18. a3 Re7 19. c4 {Boer,J (1792) -Verstraten,R (2020) ICCF 2017 1/2 (39)}) 8. Nc3 Qe7 9. d3 Qc5 10. Qxc5 Bxc5 11. Nd5 Bd6 12. O-O Nce5 13. Nxe5 fxe5 14. Rab1 c6 15. Nc3 b5 16. Bb3 Bc5+ 17. Kh1 d6 18. a4 b4 {Di Pietro,R (1665)-Rinaldi,M ICCF 2009 0-1 (33)}) 7... Bd6 ( 7... Bf8 8. Nf3 Qe7 9. Nc3 Qc5 10. Bd5 Kd8 11. d4 Qb6 12. Rb1 Qa5 13. Nd2 Nc6 14. Ne2 b6 15. Bc3 Qa4 16. Qh3 Ba6 17. Bb3 Qb5 18. Bc4 {1/2 (18) Böhnke,H (2136)-Herzog,K (2022) ICCF 2008}) (7... Qe7 8. axb4 Qxb4 9. Bb3 Qxe4+ 10. Ne2 d6 11. O-O Kd8 12. Na3 Nc6 13. Rae1 Qf5 14. Nxf4 Nxf4 15. Qxf5 Bxf5 16. Rxf4 Bg6 17. Rxf6 Re8 18. Rxe8+ Kxe8 19. Rf4 {Böhnke,H (2096)-Cencetti,A (1784) ICCF 2008 1-0 (31)}) 8. Ne2 (8. Nf3 Nc6 (8... Qe7 9. O-O Kd8 10. d4 c6 11. Bd3 Qe8 12. e5 fxe5 13. Nbd2 exd4 14. Bxd4 Qf7 15. Bc4 Qf8 16. Ng5 b5 17. Nf7+ Kc7 18. a4 Ba6 19. axb5 cxb5 20. Rxa6 {Zylla,J (2267)-Yeung,C (1642) ICCF 2008 1-0} ) 9. Nh4 Qe7 10. Nc3 Qe5 11. Nf5 Kf8 12. O-O-O Qc5 13. Be2 Be5 14. g3 d6 15. Rdf1 b5 16. gxf4 Nxf4 17. Rxf4 Bxf4 18. Qg4 Bh6 19. Nd5 b4 {Wilshusen,H (1656) -Cosentino,A (1978) ICCF 2015 0-1}) 8... Qe7 9. O-O Nc6 10. d4 Qxe4 11. Bd3 Qe3+ 12. Kh1 Nce7 13. Nd2 f5 14. Nf3 Qe6 15. c4 c6 16. d5 Qg8 17. Ned4 { Jiménez Ariza,J-Torrelles Hornos,R (1923) ICCF 2011 1-0 (27)}) 6. Qh4 (6. Qf3 Nec6 7. a3 Bc5 8. Ne2 d6 9. O-O Nd7 10. Ba2 Nd4 (10... Nb6 11. Nbc3 Kf8 12. Nd5 Kg7 13. c3 Nxd5 14. exd5 Nb8 15. Rae1 Re8 16. d4 Bb6 17. c4 Ba5 18. dxe5 fxe5 19. Bc3 Bb6 20. Qg3 Nd7 21. Bb1 Nf6 22. Nf4 {Kural,A (2194)-Jenkinson,S (2056) ICCF 2010 1-0 (65)}) 11. Nxd4 exd4 12. Qb3 Qe7 13. d3 c6 14. c3 dxc3 15. Bxc3 Bb6 16. d4 c5 17. e5 dxe5 {Kural,A (2194)-Hasidume,S (1916) ICCF 2010 1-0 (31)} ) 6... d5 (6... g5 7. Qh5+ Ng6 8. h4 g4 9. Nc3 c6 10. O-O-O b5 11. Bb3 a5 12. a3 Bc5 13. Rf1 a4 14. Ba2 Qe7 15. Qxg4 Bxa3 16. h5 Bxb2+ 17. Kxb2 Nf4 18. Nge2 {Richardson,D (1721)-Tymms,J (1719) ICCF 2014 0-1}) 7. exd5 Nxd5 (7... Nd7 8. Ne2 Nf5 9. Qe4 (9. Qh3 Nc5 10. O-O Nd6 11. Qh4 O-O 12. a3 Ba5 13. Ba2 Qe8 14. Nbc3 g5 15. Qg3 Nf5 16. Qf3 e4 17. Qh3 h5 18. g4 hxg4 19. Qxg4 Na4 20. Nxa4 Nd4 {Reed,A (2101)-Pheby,I (2246) ICCF 2016 0-1 (32)}) 9... Nd6 10. Qh4 Nxc4 11. Qxc4 Bd6 12. O-O Nb6 13. Qb3 Bf5 14. Nbc3 a6 15. Rae1 Kf7 16. Ng3 c5 17. d3 Rc8 18. Na4 Nxa4 19. Qxa4 {Boer,J-Verstraten,R (2029) ICCF 2013 0-1 (40)}) 8. Bxd5 Qxd5 9. Qxf6 Rf8 10. Qxe5+ Qxe5+ 11. Bxe5 Nc6 12. Bb2 (12. Bc3 Bc5 13. f3 Bf5 14. d3 Nb4 15. Bxb4 Bxb4+ 16. Kd1 O-O-O 17. Ne2 h5 18. a3 Ba5 19. Nc1 c6 20. Nd2 h4 21. h3 Rfe8 22. Re1 Rxe1+ 23. Kxe1 Bc3 {Skerlík,S (2352)-Eilmes,D (2342) ICCF 2007 1/2 (41)}) 12... Bc5 13. f3 Bf5 14. Kd1 {Zylla,J (2129)-Vegjeleki,A (2195) ICCF 2009 1/2 (34)}) (2... d5 3. Bxe5 (3. c4 Nf6 4. cxd5 Nxd5 5. a3 Bd6 6. g3 Nb6 7. Nc3 a5 8. b5 N8d7 9. Nf3 O-O 10. Bg2 Nc5 11. Qc2 Re8 12. d3 Be6 13. O-O a4 14. Rab1 Qe7 {Coope,D (1870)-Varonen,M (1958) ICCF 2017 0-1 (75)}) 3... Nc6 (3... f6 4. Bc3 (4. Bb2 Bxb4 5. Nf3 Nh6 6. e3 O-O 7. c3 Bc5 8. d4 Bb6 9. Bd3 Re8 10. O-O Bg4 11. Nbd2 Nc6 12. Qc2 Bf5 13. Bxf5 Ne7 14. Bxh7+ Kf8 15. Ba3 g5 {Groenhout,R (1853)-Anderson,L (1193) ICCF 2016 1-0 (26)}) 4... Nc6 5. e3 Bxb4 6. Bb5 Bd7 7. Nf3 Bxc3 8. Nxc3 Nb4 9. a3 Bxb5 10. Nxb5 Nc6 11. O-O a6 12. Nbd4 Nxd4 13. Nxd4 Nh6 14. Qh5+ Nf7 15. Ne6 {Bray,P (1594)-Jones,S (1457) ICCF 2018 1-0 (27)}) 4. Bb2 (4. b5 Nxe5 5. e3 d4 6. exd4 Qxd4 7. c3 Qe4+ 8. Qe2 Nd3+ 9. Kd1 Qxe2+ 10. Bxe2 Nxf2+ 11. Ke1 Nxh1 12. Nf3 Nf6 13. Kf1 Ne4 14. Kg1 Nhf2 15. d3 Nxd3 {Neumann,F (1516)-Korshunov,S (2353) ICCF 2020 0-1}) 4... Nxb4 (4... Nf6 5. b5 Na5 6. e3 Be7 7. Nf3 O-O 8. Be2 Bg4 9. O-O Bxf3 10. Bxf3 a6 11. bxa6 Rxa6 12. d3 Nc6 13. Nd2 Qd6 14. c4 dxc4 15. Nxc4 Qe6 16. Qb3 {Skerlík,S (2240)-Arranja,A ICCF 2017 1-0 (29)}) 5. a3 (5. Nf3 Bf5 (5... Nc6 6. g3 Nf6 7. Bg2 Bd6 8. O-O O-O 9. d3 Bg4 10. Nbd2 Ne7 11. c4 dxc4 12. Nxc4 h6 13. Qd2 Ned5 14. e4 Bb4 15. Qc1 Nb6 16. Qf4 Bxf3 17. Bxf3 {Yeung,C (1740)-Aannevik,B (1568) ICCF 2006 1-0}) (5... c5 6. e3 a6 7. a3 Nc6 8. c4 d4 9. exd4 cxd4 10. d3 Nf6 11. Be2 Qb6 12. Qc2 Bc5 13. h3 O-O 14. O-O Re8 15. Re1 a5 16. Nbd2 a4 17. Rab1 {Frydendal,O (1848)-Dunlop,G ICCF 2010 0-1 (35)}) (5... Nf6 6. g3 Bd6 7. Bg2 O-O 8. O-O c5 9. d3 Bf5 10. Nbd2 Re8 11. c3 Nc6 12. Re1 Re6 13. h3 Qb6 14. Qb3 Qxb3 15. axb3 Rae8 16. Kf1 b5 17. Nh4 {Bäckström,M (2298)-Aannevik,B (1568) ICCF 2006 1-0 (34)}) 6. d3 (6. Nd4 Bd7 7. e3 c5 8. a3 Nc6 9. Nf3 Nf6 10. Bxf6 Qxf6 11. Nc3 Be6 12. Rb1 Rb8 13. Bb5 Bd6 14. e4 d4 15. e5 Bxe5 16. Ne4 Qf4 17. Nxc5 Bd5 {Braak,J (1980)-DiJoseph,J ICCF 2013 1-0 (56)}) 6... Nf6 7. a3 (7. e3 c5 8. Nbd2 Bd6 9. a3 Nc6 10. c4 dxc4 11. Nxc4 Bc7 12. Rc1 O-O 13. Ncd2 Qd6 14. Bxf6 Qxf6 15. Rxc5 Rac8 16. d4 Bd6 17. Rb5 Bxa3 18. Qb3 Be7 {Gardner,A-Withey, R (2244) ICCF 2006 0-1 (39)}) 7... Na6 8. g3 Bd6 9. Qd2 O-O 10. Qg5 Bg4 11. Bxf6 Qxf6 12. Qxf6 gxf6 13. Bg2 c6 14. e3 Rae8 15. Nc3 Nc5 16. Ne2 Na4 { Belov,P (2142)-Doroshenko,A (2362) ICCF 2012 1/2 (47)}) (5. e3 Bf5 6. d3 Nf6 7. Be2 c5 8. a3 Nc6 9. Nd2 Bd6 10. g4 Be6 11. g5 Nd7 12. Bxg7 Rg8 13. Bh6 Qa5 14. Ngf3 O-O-O 15. Rb1 Nb6 16. O-O Na4 {Wantoch-Rekowski,J (2246)-Gacnik,L (2015) ICCF 2008 0-1 (79)}) 5... Nc6 (5... Na6 6. e3 Nc5 7. c4 (7. d4 Ne4 8. c4 Ngf6 9. cxd5 Qxd5 10. f3 Nd6 11. e4 Qe6 12. d5 Qe7 13. Ne2 Nd7 14. Nd2 Qg5 15. Qc2 Nb6 {Coope,D (1816)-Hjorth,J (1778) ICCF 2019}) (7. Nf3 c6 8. d4 Ne4 9. Bd3 Ngf6 10. O-O Bd6 11. Ne5 Qb6 12. Qc1 Qc7 13. Nd2 Nxd2 14. Qxd2 Ne4 15. Qe2 O-O 16. c4 f6 17. f3 Nc5 18. dxc5 Bxe5 {Heß,H (2315)-Yordanova,S (2308) ICCF 2018 1/2 (25)}) 7... c6 (7... Nf6 8. Bxf6 Qxf6 9. d4 Be6 10. Nd2 dxc4 11. Bxc4 Bxc4 12. Nxc4 Qa6 13. Qc2 Nd7 14. f4 Nf6 15. Qb3 Be7 16. Nf3 O-O 17. O-O c5 18. a4 cxd4 19. Nxd4 {Stapinski,R (1840)-Hjorth,J (2008) ICCF 2018 1/2 (38)}) 8. d4 Qa5+ 9. Bc3 Qa4 10. dxc5 Qxd1+ 11. Kxd1 dxc4 12. Bxc4 Nf6 13. Bd4 Ne4 14. Ke2 Nxc5 15. Nf3 f6 16. Rc1 Kd8 17. a4 {Ilzig,G (2264)-Hjorth,J (1936) ICCF 2017 1-0}) 6. e3 Nf6 (6... a6 7. Nf3 Bg4 8. c4 Nf6 9. cxd5 Nxd5 10. Be2 Bxf3 11. Bxf3 f6 12. O-O Qd7 13. Qb3 Nb6 14. Bh5+ Kd8 15. d4 Qd5 16. Qd1 g6 17. Be2 Nc4 18. e4 {Vegjeleki,A (2313)-Aannevik,B (1568) ICCF 2006 1-0 (28)}) 7. Nf3 Bd6 ( 7... Be7 8. c4 O-O (8... Bf5 9. cxd5 Qxd5 10. Nc3 Qd7 11. d4 O-O 12. Rc1 h6 13. Ne2 Rad8 14. Ng3 Bg6 15. Bc4 Bd6 16. Qe2 Bh7 17. d5 Na5 18. Bxf6 gxf6 19. O-O Bg6 20. Ba2 {Kural,A (2140)-Bagdzius,G ICCF 2009 1-0 (36)}) (8... Bg4 9. d4 O-O 10. h3 Be6 11. Nbd2 dxc4 12. Bxc4 Bxc4 13. Nxc4 Qd5 14. Rc1 Ne4 15. O-O f5 16. Nce5 Nxe5 17. dxe5 Qxd1 18. Rfxd1 Rad8 19. Nd4 Nc5 20. f4 {Skerlík,S (2306) -Guedes Jr.,D (2348) ICCF 2011 1-0 (46)}) 9. cxd5 (9. Qc2 Na5 (9... Bg4 10. d4 Bxf3 11. gxf3 dxc4 12. Bxc4 Qd7 13. Nd2 Rae8 14. O-O-O Na5 15. Ba2 Nd5 16. Rhg1 Kh8 17. f4 f5 18. Nf3 Qe6 19. Ne5 Rd8 20. e4 fxe4 21. Qxe4 {Daatselaar,J (2233) -Michael,D (2008) ICCF 2006 1-0 (36)}) 10. cxd5 Qxd5 11. Qxc7 Nc6 12. Nc3 Qb3 13. Nd1 Rd8 14. Qf4 Be6 15. Rc1 Nh5 16. Qe4 Bxa3 17. Bc4 Bxc4 18. Qxc4 Qxc4 19. Rxc4 Be7 20. Ke2 a5 {Heß,H (2316)-Ryder,A (2197) ICCF 2011 1-0 (61)}) 9... Nxd5 10. Be2 Bf5 11. O-O Qd6 12. d4 Qg6 13. Nc3 Rad8 14. Nxd5 Rxd5 15. Ne1 Rfd8 16. Rc1 a6 17. Qb3 Na5 18. Qc3 Nc6 19. Nd3 {Frydendal,O (1834)-Andreassen,E (2204) ICCF 2011 1/2 (33)}) (7... Be6 8. c4 (8. d4 Ne4 9. Nbd2 f5 10. c4 Nxd2 11. Nxd2 dxc4 12. Nxc4 Bd5 13. Qc2 Qg5 14. h4 Qg6 15. h5 Qf7 16. Ne5 Nxe5 17. dxe5 O-O-O 18. Rc1 Rg8 19. Bd3 g6 {Skerlík,S (2306)-Anokhin,Y (2311) ICCF 2011 0-1 (55)}) (8. Nc3 Be7 9. Bd3 Bg4 10. h3 Bh5 11. Be2 O-O 12. O-O Qd7 13. d3 a6 14. Nh4 Bxe2 15. Nxe2 Nh5 16. Nf3 g6 17. Qc1 b5 18. c4 dxc4 19. dxc4 Rfd8 {Degterev,P (2475)-Carapinha,F (1865) ICCF 2010 1/2 (52)}) 8... dxc4 9. Qa4 a6 10. Qc2 Qd5 11. Nc3 Qd6 12. Be2 O-O-O 13. O-O Be7 14. Rfd1 Ne5 15. Nxe5 Qxe5 16. Na4 Qf5 17. d3 Ng4 18. Bxg4 Qxg4 19. d4 {Frydendal,O (1623)-Cipolla,A ICCF 2015 0-1 (25)}) (7... Bg4 8. Be2 Bd6 9. O-O O-O 10. d3 Rb8 11. Nbd2 b5 12. Nb3 Re8 13. h3 Be6 14. Nfd4 Nxd4 15. Bxd4 Nd7 16. Na5 c5 17. Nc6 Qh4 18. Nxb8 Bxb8 19. Bc3 {Thau,O (1771)-Hjorth,J (1913) ICCF 2019 0-1 (29)}) 8. c4 (8. Be2 O-O 9. d4 Na5 10. Nbd2 b5 11. O-O Nc4 12. Qc1 Bg4 13. h3 Bf5 14. a4 c6 15. Ne5 Qc7 16. Bd3 Be6 17. axb5 cxb5 18. Ra6 Rfd8 19. Nb3 Bc8 {Visser,A (1849)-Hjorth,J (1778) ICCF 2019 0-1 (34)}) 8... O-O 9. Nc3 (9. cxd5 Nxd5 10. Bc4 Nb6 11. Be2 Bf5 12. d3 Qe7 13. O-O Rad8 14. Nbd2 Rfe8 15. Re1 Qe6 16. Qc2 h6 17. e4 Bh7 18. Rab1 Qe7 19. Qc3 Qf8 20. Bd1 Ne5 {Wantoch-Rekowski,J (2245)-Sparnacini,S (2214) ICCF 2008 1-0 (55)}) (9. Qc2 Qe7 10. d4 dxc4 11. Bxc4 Be6 12. Nbd2 {1-0 (12) Puoli,H (2332)-Magalhães,J (2114) ICCF 2007}) 9... dxc4 10. Bxc4 Bg4 11. Qc2 Bxf3 12. gxf3 Re8 13. Be2 Rc8 14. h4 {Fagerbekk,E (2220)-Løvås,R (1875) ICCF 2010 1-0 (36)}) (2... Nc6 3. b5 Nd4 (3... Na5 4. Bxe5 Nc4 5. Bc3 (5. Bd4 d5 6. Nf3 Ne7 7. e3 a6 8. Bxc4 dxc4 9. a4 Bg4 10. h3 Bh5 11. O-O Nf5 12. Be5 Nh4 13. g4 Qd5 14. Nxh4 Qxe5 15. Nc3 Qf6 16. Ng2 Bg6 {Morley,P (2277)-Morcillo Holgado, M (1937) ICCF 2008 1-0}) 5... d5 6. e3 Nf6 7. Nf3 Be7 8. Be2 O-O 9. d3 Nd6 10. a4 a6 11. bxa6 Rxa6 12. Nbd2 Bd7 13. a5 Nb5 14. Bb2 Bb4 15. c4 {Frydendal,O (1834)-Øvergaard,J (2018) ICCF 2011 1-0 (59)}) (3... Nce7 4. Bxe5 Ng6 (4... d6 5. Bb2 Nf6 6. Nf3 c6 7. Bxf6 gxf6 8. e3 Bg4 9. Nc3 {1-0 (9) Cottarelli,F (1891) -Bevan,S ICCF 2013}) 5. Bb2 (5. Bd4 a6 6. bxa6 c5 7. axb7 Bxb7 8. Bc3 Nf6 9. Nf3 Bd6 10. e3 O-O 11. Be2 Ne4 12. a4 Bc7 13. O-O Qe7 14. Bb2 Bc6 15. Bb5 Rab8 16. d3 Ng5 {Morley,P (2277)-Shitrit,K (2154) ICCF 2008 1-0}) 5... d5 6. d4 Bb4+ 7. Nd2 Nf6 8. e3 Ne4 9. Ngf3 Bg4 10. c3 Bxc3 11. Bxc3 Nxc3 12. Qc2 Ne4 13. Be2 Qe7 14. Rc1 Rc8 15. h3 {Tago,S (1635)-Hayashi,K (1727) ICCF 2009 1-0 (40)}) 4. e3 Ne6 (4... Nxb5 5. Bxb5 a6 (5... e4 6. Nc3 Nf6 7. d3 c6 8. Ba4 exd3 9. cxd3 d5 10. Nf3 Bd6 11. O-O Bc5 12. d4 Bd6 13. Re1 O-O 14. e4 dxe4 15. Nxe4 Nxe4 16. Rxe4 Bd7 17. Bb3 {Meara,P-Selby,R (1335) ICCF 2014 1-0 (46)}) (5... Bd6 6. d4 e4 7. Nd2 Nf6 8. c4 {1-0 (8) Tago,S (1608)-Sugimura,K (1664) ICCF 2015}) 6. Be2 d6 7. Nf3 c6 8. O-O e4 9. Ne1 d5 10. d3 Qg5 11. g3 Bb4 12. c3 Bd6 13. dxe4 Qe5 14. exd5 cxd5 15. Nd2 {1-0 (15) Flewelling,H-Pye,J (1600) ICCF 2011}) 5. Bxe5 d6 (5... d5 6. Nf3 Bd6 7. Be2 a6 8. Nc3 Ne7 9. a4 Bxe5 10. Nxe5 d4 11. exd4 Qxd4 12. Nf3 Qg4 13. O-O Nf4 14. g3 axb5 15. axb5 Rxa1 16. Qxa1 Nxe2+ 17. Nxe2 {Hofer,S (1599)-Pennella,D ICCF 2017 0-1}) (5... Qg5 6. d4 f6 7. Bg3 Bb4+ 8. c3 Bd6 9. Bxd6 cxd6 10. c4 b6 11. Nh3 Qg6 12. Be2 Bb7 13. Bh5 Qxh5 14. Qxh5+ g6 15. Qh4 Bxg2 16. Rg1 g5 17. Qh5+ {Jäger,E-Beeman,B ICCF 2007 1-0 (27)}) (5... Nf6 6. a4 d6 7. Bb2 Be7 8. Nf3 {1-0 (8) Zdziech,M-Raj,A ICCF 2019}) 6. Bb2 (6. Bg3 a6 7. a4 axb5 8. Bxb5+ c6 9. Bc4 d5 10. Bb3 Nf6 11. Ne2 Ne4 12. O-O Bc5 13. d4 Bb6 14. Nd2 N4g5 15. Bh4 O-O 16. f4 Nh3+ 17. gxh3 Qxh4 {Bray,P-Jones,S ICCF 2017 1-0 (35)}) 6... Nf6 7. Be2 (7. Nf3) 7... c6 (7... Be7 8. Nf3 O-O 9. O-O a6 10. bxa6 b6 11. d4 d5 12. Nbd2 Bxa6 13. c4 c5 14. Qc2 cxd4 15. Nxd4 Rc8 16. Nxe6 fxe6 17. Qb3 Nd7 18. f4 Nc5 19. Qc2 {Stapinski,R (1916)-Lahdenmäki,L (1988) ICCF 2016 0-1 (37)}) 8. c4 d5 9. Nf3 Be7 10. cxd5 cxd5 11. O-O O-O 12. d4 a6 13. bxa6 bxa6 14. Ne5 {Baumann,W (2013)-Ylönen,O ICCF 2009 1-0 (32)}) ( 2... Nf6 3. a3 (3. Bxe5 Nc6 4. Bc3 a6 5. e3 Bxb4 6. Bb2 O-O 7. Ne2 Re8 8. Nbc3 d5 9. d4 Na7 10. a3 Ba5 11. Nf4 c6 12. Bd3 Bg4 13. Qc1 Bb6 14. h3 Be6 {Bray, P-Jones,P ICCF 2017 1-0 (38)}) 3... d6 (3... a5 4. b5 d6 (4... Bc5 5. e3 Qe7 6. Bxe5 Qxe5 7. d4 Qe7 8. dxc5 Qxc5 9. Nf3 (9. Qd4 Qxd4 10. exd4 d5 11. c4 dxc4 12. Bxc4 Nbd7 13. Ne2 Nb6 14. Bd3 Be6 15. Nd2 O-O-O 16. Rc1 Kb8 17. f3 Rhe8 18. Kf2 Re7 19. Rhe1 {1-0 (19) Visser,A (1997)-Ostermann,M (1997) ICCF 2012}) 9... d6 10. Nbd2 O-O 11. Bd3 Re8 12. O-O Nbd7 13. Nb3 Qc3 14. Qd2 Qxd2 15. Nfxd2 g6 16. a4 {Stapinski,R (1846)-Fua,N (2019) ICCF 2010 0-1 (28)}) 5. e3 (5. Nc3 d5 6. e3 Bd6 7. Nf3 Nbd7 8. Na4 e4 9. Nd4 Ne5 10. Be2 O-O 11. O-O Nfg4 12. h3 Nh6 13. f4 exf3 14. Bxf3 Qg5 15. Bxd5 Bxh3 16. Bxb7 Rab8 {Walker,J (1761)-Látal,F (2152) ICCF 2015 0-1 (54)}) 5... Be7 6. Nc3 (6. d4 O-O 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bxe5 Bf5 10. Nd2 Nbd7 11. Bxc7 Rdc8 12. Bg3 Rxc2 13. Ne2 Rac8 14. Nd4 Rc1+ 15. Rxc1 Rxc1+ 16. Ke2 Bg6 17. N2b3 Rc3 {Wantoch-Rekowski,J (2305) -Kolanek,R (2508) ICCF 2006 0-1 (42)}) 6... O-O 7. Nf3 Nbd7 8. Be2 Nb6 9. O-O Re8 10. h3 Bf8 11. d3 d5 12. a4 Bf5 13. Nb1 Bd6 14. Nbd2 c6 15. bxc6 {O'Brien, P-Richardt,M (2125) ICCF 2014 0-1 (60)}) 4. e3 (4. c4 g6 (4... b6 5. Nc3 Bb7 6. d3 Be7 7. e4 Nbd7 8. Nf3 O-O 9. Be2 a5 10. O-O Re8 11. Qd2 h6 12. h3 Nf8 13. Nd5 Nxd5 14. cxd5 Nh7 15. Rfc1 axb4 16. axb4 {Richardson,D (1698)-White,R (1750) ICCF 2014 0-1 (39)}) 5. e3 (5. Nc3 b6 6. e4 Bg7 7. Bd3 O-O 8. Nf3 Bb7 9. O-O Nbd7 10. Re1 c5 11. Nd5 Re8 12. b5 a6 13. a4 axb5 14. axb5 Rxa1 15. Qxa1 Qb8 16. Qa2 Qa8 {Richardson,D (1721)-Selby,R (1335) ICCF 2014 1-0 (40)}) (5. g3 Bg7 6. Bg2 c6 7. d3 O-O 8. Nf3 h6 9. O-O Nbd7 10. Nc3 a6 11. Qc2 Nb6 12. a4 Be6 13. a5 Nbd7 14. b5 c5 15. b6 Rc8 16. Nd2 Rb8 {Wright,D (1613)-Acosta,E (1630) ICCF 2013 1-0 (62)}) 5... Bg7 6. Be2 (6. Nf3 O-O 7. Nc3 b6 8. g3 Bb7 9. d3 g5 10. e4 h6 11. g4 Nxg4 12. h4 gxh4 13. Nxh4 Nf6 14. Nf5 Kh7 15. Bc1 Rh8 16. Nxh6 Qf8 17. Qf3 Bc8 {Michas,J (1755)-Kruse,P (1622) ICCF 2020 1-0}) 6... O-O 7. d3 Nc6 8. Nd2 b6 9. Bf3 Bb7 10. Ne2 Qd7 11. O-O Nd8 12. Bxb7 Nxb7 13. Qc2 Nd8 14. h3 Re8 15. d4 exd4 {Fagerbekk,E (2193)-Bekkesletten,C (2379) ICCF 2013 1/2}) ( 4. d3 g6 5. e4 Bg7 6. Nf3 O-O 7. Be2 Bg4 8. O-O Nh5 9. Nbd2 Nf4 10. Re1 Nc6 11. b5 Ne7 12. Bf1 c6 13. a4 d5 14. h3 Bxh3 15. gxh3 Qd7 {Flewelling,H (1760) -Anderson,L (890) ICCF 2018 1-0 (30)}) (4. Nf3 Be7 5. e3 Bg4 6. Be2 Nbd7 7. c4 O-O {0-1 (7) Thomsen,J-Linden,W (1942) ICCF 2012}) (4. d4 exd4 5. Qxd4 Bf5 6. Qe3+ Be7 7. c4 Nbd7 8. Nd2 O-O 9. Bxf6 Bxf6 10. Rd1 Ne5 11. g3 Bc2 12. Rc1 Bg6 13. Bh3 Re8 14. Qb3 {Medina,G-Vémola,S ICCF 2014 0-1 (44)}) 4... Be7 (4... g6 5. Nf3 Bg7 6. Be2 O-O 7. O-O Nc6 8. d3 Bd7 9. b5 Ne7 10. a4 a6 11. c4 axb5 12. axb5 e4 13. dxe4 Nxe4 14. Rxa8 Qxa8 15. Bxg7 Kxg7 16. Qd4+ {Cacas,A (1646) -Linden,W (1783) ICCF 2018 1/2 (50)}) 5. c4 O-O 6. Nc3 Bf5 (6... c6 7. d3 d5 8. cxd5 a5 9. b5 Nxd5 10. Nxd5 Qxd5 11. bxc6 Nxc6 12. Ne2 Rd8 13. Nc3 Qe6 14. Rb1 b5 15. Nxb5 Rb8 16. Nc3 Nd4 17. Bc1 Rxb1 18. Nxb1 {Ringsborg,A (2383)-Hansen,L (2129) ICCF 2014 0-1 (31)}) (6... Re8 7. Qc2 (7. Nf3 c6 (7... a5 8. b5 Nbd7 9. d4 exd4 10. Nxd4 Nc5 11. Be2 Nfe4 12. Nd5 Nf6 13. Nf4 Nfd7 14. Qc2 g6 15. Nd5 Nf6 16. Nxe7+ Qxe7 17. O-O Bg4 18. Rad1 a4 19. Ba1 {Wantoch-Rekowski,J (2305) -Kmiecik,K (2218) ICCF 2006 1/2 (50)}) 8. d4 e4 9. Nd2 d5 10. Be2 a6 11. O-O Bd6 12. b5 cxb5 13. cxb5 a5 14. Qb3 Be6 15. Rfc1 Nbd7 16. Na4 h5 17. Nc5 Qb6 18. Na4 Qd8 {Kappelhof,W (2338)-Leijen,P (2158) ICCF 2020 1-0 (39)}) 7... c5 8. Nf3 cxb4 9. axb4 Na6 10. Ba3 h6 11. Be2 d5 12. c5 d4 13. Ne4 Nxe4 14. Qxe4 f5 15. Qc2 dxe3 16. Bc4+ Kh7 17. dxe3 e4 18. Rd1 {Marconi,R (2100)-Woldmo,A (2085) ICCF 2008 1-0 (25)}) 7. Be2 a5 (7... c6 8. Nf3 h6 9. O-O Bh7 10. d4 Nbd7 11. Qb3 exd4 12. exd4 Re8 13. Rfe1 a5 14. d5 axb4 15. axb4 Rxa1 16. Bxa1 cxd5 17. cxd5 Ne4 18. Nb5 Bf6 19. Bxf6 {Schmidt,K (2171)-Shishkov,V (2075) ICCF 2015 1/ 2 (27)}) 8. b5 Nbd7 9. Nf3 c6 (9... Ne4 10. d3 Nxc3 11. Bxc3 Nc5 12. O-O Bf6 13. d4 exd4 14. Nxd4 Be4 15. Qd2 Re8 16. Rad1 Be5 17. g3 Qc8 18. Rfe1 Qh3 19. Bf1 Qh5 20. Bg2 Bxg2 21. Kxg2 {Baumann,W (1849)-Niziolek,J (1958) ICCF 2011 1/ 2 (33)}) 10. d4 h6 11. O-O Qc7 12. h3 Rfe8 13. Rc1 Bg6 14. Re1 {Fagerbekk,E (2189)-Kuteneva,G (2179) ICCF 2013 1-0 (52)}) (2... e4 3. c4 (3. e3 Nf6 (3... d5 4. c4 Nf6 5. cxd5 Qxd5 6. Bxf6 gxf6 7. Nc3 Qe6 8. Nge2 Bd7 9. Nd4 Qe5 10. f4 exf3 11. Nxf3 Qh5 12. Qb1 Rg8 13. Qe4+ Kd8 14. b5 c6 15. Rb1 {Torgersen,T (2077)-Bu,K ICCF 2014 1-0 (56)}) 4. b5 (4. a3 a5 (4... d5 5. c4 a5 (5... c6 6. Nc3 a5 7. b5 Be7 8. Qb3 O-O 9. cxd5 cxd5 10. Nge2 Nbd7 11. Nd4 Nc5 12. Qc2 Qc7 13. Be2 Bd6 14. g3 Bh3 15. Rc1 a4 16. Qb1 Qd7 17. Rg1 {Richardson,D (1787) -Dudeney,P ICCF 2012 0-1 (32)}) 6. cxd5 axb4 7. axb4 Rxa1 8. Bxa1 Nxd5 9. Nc3 Nf6 10. Qb1 Qe7 11. Na2 Nd5 12. Bc4 {1-0 (12) Müller,D (2303)-Hamblok,R ICCF 2017}) 5. b5 d5 (5... Be7 6. Be2 d5 7. c4 O-O 8. d3 dxc4 9. dxc4 Nbd7 10. Nc3 Nc5 11. Qc2 Nd3+ 12. Bxd3 exd3 13. Qd2 Be6 14. Nf3 Bxc4 15. O-O Qd6 16. a4 Qe6 17. h3 {Zanin,A-Barbalic,Z (2022) ICCF 2019 0-1 (26)}) 6. d4 Be7 7. c4 c6 8. Nc3 O-O 9. a4 Bb4 10. Qc2 cxb5 11. c5 bxa4 12. Bb5 b6 13. cxb6 Qxb6 14. Bxa4 Ba6 15. Nge2 Rc8 {Wilshusen,H (1359)-Barbalic,Z (2022) ICCF 2019 0-1}) 4... d5 5. c4 (5. a4 c6 (5... Be6 6. c4 Nbd7 7. cxd5 Nxd5 8. Nc3 Nc5 9. Qc2 Nb4 10. Qd1 Bb3 11. Ba3 Ncd3+ 12. Bxd3 Nxd3+ 13. Ke2 Bxd1+ 14. Nxd1 Bxa3 15. Rxa3 O-O 16. Nh3 Nc1+ 17. Ke1 {Odermatt,C-Serovey,M (1842) ICCF 2013 0-1}) 6. c4 Be7 7. d4 O-O 8. Ne2 a6 9. Nd2 axb5 10. axb5 Rxa1 11. Qxa1 cxb5 12. cxb5 Nbd7 13. Nc3 Nb6 14. Ba3 Bf5 15. Bc5 Qc7 16. Nb3 Rc8 {Welti,M (2030)-Latta,H (2060) ICCF 2011 1/ 2 (54)}) (5. d4 a6 6. a4 axb5 7. axb5 Rxa1 8. Bxa1 Bd6 9. c4 dxc4 10. Bxc4 O-O 11. Ne2 Nbd7 12. Ng3 Nb6 13. Be2 Be6 14. O-O Bxg3 15. hxg3 Qd7 16. Qc2 Ra8 { Haznedaroglu,K (1990)-Bjazevic,P ICCF 2006 0-1 (47)}) 5... Nbd7 (5... Be6 6. cxd5 Nxd5 7. Nc3 Nxc3 8. Bxc3 Nd7 9. Ne2 Bc4 10. Ng3 Bxf1 11. Rxf1 Nc5 12. f3 Qh4 13. Rh1 Bd6 14. f4 Nd3+ 15. Kf1 Bxf4 16. Nxe4 Bh6 17. Qa4 {Osuna Osuna,F (1658)-Lewis,J (1584) ICCF 2011 0-1 (28)}) 6. Nc3 (6. d4 exd3 7. Bxd3 Bb4+ 8. Bc3 Qe7 9. Nf3 Bxc3+ 10. Nxc3 Qb4 11. Qb3 Nc5 12. Qc2 dxc4 {0-1 (12) Frydendal, O (1788)-Klausner,H (2207) ICCF 2011}) (6. Nh3 Bd6 7. cxd5 O-O 8. Nc3 Nc5 9. d4 exd3 10. Bxd3 a6 11. Ng5 Be5 12. O-O Bxc3 13. Bxc3 Nxd3 14. Qxd3 Qxd5 15. Qxd5 Nxd5 16. Bb2 axb5 17. Rfd1 Nb6 {Fernández Fornés,J (2302)-Silva,F (2341) ICCF 2012 0-1 (44)}) 6... dxc4 7. Rc1 Bd6 8. Bxc4 Ne5 9. Be2 O-O 10. f4 Ng6 11. g3 Re8 12. h4 Ne7 13. g4 Ned5 14. Nh3 Nxc3 {Buczinski,H (1994)-Miciak,E (2279) ICCF 2017 0-1 (53)}) (3. a3 a5 (3... d5 4. e3 a6 5. c4 c6 6. Nc3 Nf6 7. cxd5 cxd5 8. Nge2 Ng4 9. h3 Ne5 10. Nd4 Be7 11. d3 Nbd7 12. dxe4 dxe4 13. Nxe4 O-O 14. Nf5 h6 15. Bxe5 {Flewelling,H-Gosling,D ICCF 2011 1-0 (28)}) 4. b5 d5 5. d3 Nd7 6. c4 c6 7. bxc6 bxc6 8. cxd5 Qb6 9. Qc2 cxd5 10. e3 Ba6 11. Bd4 Nc5 12. dxe4 Qb3 13. Ra2 Qxc2 14. Rxc2 Nd3+ {Coope,D (1921)-Lumsdon,A (2081) ICCF 2017 1/2 (47)}) 3... Nf6 4. a3 a5 5. b5 d5 (5... Be7 6. Nc3 (6. e3 O-O 7. d4 c6 8. d5 cxd5 9. Nc3 d6 10. Nxd5 Nxd5 11. Qxd5 Bf6 12. Rb1 Bxb2 13. Rxb2 Qf6 14. Qd4 Be6 15. Qxf6 gxf6 16. Rd2 Nd7 17. Ne2 Rac8 {Kural,A (2397)-Jensen,J (2338) ICCF 2018 1/2}) 6... O-O 7. e3 c6 8. d3 d5 9. cxd5 cxd5 10. dxe4 dxe4 11. Nge2 Bf5 (11... Nbd7 12. Na4 Nb6 13. Qxd8 Bxd8 14. Nxb6 Bxb6 15. Ng3 a4 16. Bxf6 Ba5+ 17. Ke2 gxf6 18. Nxe4 f5 19. Nf6+ Kh8 20. Nh5 Bc3 21. Rd1 Be6 22. Kf3 Bb2 23. Bd3 {Nicklich,W (2242)-Tsygankov,E (2220) ICCF 2011 0-1 (54)}) 12. Ng3 Bg6 13. Nce2 a4 14. Nf4 Qa5+ 15. Qd2 Qxd2+ 16. Kxd2 Rd8+ 17. Ke1 {Bonetti,S-Marko, M (2225) ICCF 2007 1/2 (33)}) 6. cxd5 (6. e3 Nbd7 7. cxd5 (7. d4 exd3 8. Bxd3 Nc5 9. Nc3 Be6 10. cxd5 Nxd5 11. Bc2 Nxc3 12. Bxc3 a4 13. Ne2 Bc4 14. Qxd8+ Rxd8 15. Nd4 Nb3 16. Bxb3 axb3 17. Bb4 Be7 18. Bxe7 Kxe7 {Skerlík,S (2306) -Marko,M (2328) ICCF 2011 1/2}) 7... Nxd5 8. d3 (8. Nc3 Nxc3 9. Bxc3 Nc5 10. Qh5 Be6 11. Nh3 Qd7 12. Nf4 O-O-O 13. Be2 Kb8 14. O-O b6 15. Nxe6 Qxe6 16. Bg4 Qg6 17. g3 f6 18. Ra2 Qxh5 19. Bxh5 Be7 {Schmidt,K (2132)-Gunkel,W (2300) ICCF 2010 1/2 (38)}) 8... exd3 9. Bxd3 Nc5 10. Bc2 Qd7 11. Qe2 Bd6 (11... Qg4 12. Nf3 Qxg2 13. Rg1 Qh3 14. Rg3 Qh5 15. Rg5 {1-0 (15) Yarmolyuk,Y (2313)-Tatarska, V (2093) ICCF 2019}) 12. Nd2 O-O 13. Rd1 Nb6 14. Ngf3 Qe7 15. h3 Be6 16. Nd4 Bd7 17. O-O Rfe8 {Kural,A (2380)-Selen,D (2435) ICCF 2016 1/2 (40)}) 6... Nbd7 7. Nc3 (7. d3 e3 8. fxe3 Nxd5 9. Qd2 Bd6 10. Nf3 O-O 11. Nc3 N5f6 12. e4 Ng4 13. h3 Bg3+ {0-1 (13) Stapinski,R (1997)-Oleksak,A (1963) ICCF 2009}) 7... Nc5 8. e3 Bf5 9. Bc4 Nfd7 10. Na4 Qg5 11. Kf1 h5 12. Nxc5 Bxc5 13. Qc2 Nb6 14. h4 { Muri,H (2355)-Tsygankov,E (2313) ICCF 2012 1/2 (28)}) (2... Bd6 3. Nf3 (3. c4 c5 4. b5 a6 5. Nc3 axb5 6. Nxb5 Bc7 7. Nf3 Nc6 8. e4 d6 9. a3 Bb8 10. Be2 Nf6 11. d3 O-O 12. O-O Bd7 13. h3 Nd4 14. Nbxd4 cxd4 {Yeung,C (1664)-Lau,K (1695) ICCF 2011 1/2 (60)}) 3... Qe7 (3... f6 4. a3 e4 5. Nd4 Be5 6. e3 Ne7 7. d3 exd3 8. Bxd3 O-O 9. Nd2 d5 10. O-O Nbc6 11. N2b3 Nxd4 12. exd4 Bd6 13. c4 dxc4 14. Bxc4+ Kh8 15. Re1 {Recasens Sánchez,J (2124)-Gimeno Díaz,F ICCF 2008 1-0 (33)}) 4. c4 (4. g3 b6 5. Bg2 Bb7 6. O-O Nf6 7. b5 O-O 8. a4 a6 9. bxa6 Nxa6 10. d4 exd4 11. Bxd4 Rfe8 12. Re1 c5 13. Bb2 Nc7 14. c4 Ne6 15. Nc3 h6 {Yeung,C (1592) -Lau,K ICCF 2007 1-0 (27)}) 4... c6 5. e3 Nf6 6. a3 O-O 7. Be2 e4 8. Nd4 Be5 9. O-O a5 10. Nc3 d5 11. cxd5 cxd5 12. bxa5 Nc6 13. Ncb5 Bd7 14. Bc3 {Degterev,P (2475)-Dahlström,R (2479) ICCF 2009 1/2 (34)}) 3. Bxe5 (3. f4 d6 (3... exf4 4. Bxg7 Qh4+ 5. g3 fxg3 6. Bg2 gxh2+ 7. Kf1 hxg1=Q+ 8. Kxg1 Qg5 9. Bxh8 f6 (9... Nf6 10. Bxf6 Qxf6 11. Nc3 c6 12. Rxh7 d5 13. Qf1 Qg6 14. Rh8+ Bf8 15. Qf4 Qg7 16. Qh4 Nd7 17. Rf1 Ne5 18. Rh7 Qg8 19. Rh5 Qg7 20. d4 Ng6 21. Qf2 {Zylla,J (2226)-Haznedaroglu,K (1990) ICCF 2006 1/2}) (9... d5 10. Rxh7 Bf5 11. Rg7 Bc5+ 12. e3 Bxe3+ 13. dxe3 Qxe3+ 14. Kf1 Qf4+ 15. Qf3 Qc1+ 16. Kf2 Qxc2+ 17. Qe2+ Qxe2+ 18. Kxe2 Ne7 19. Nc3 c6 20. Rg5 Bg6 21. Rh1 {Zylla,J (2226)-Krüger,J ICCF 2006 1-0 (27)}) 10. Rxh7 Ne7 11. Bxf6 Qxf6 12. c3 Bd6 13. e4 Nbc6 14. Qh5+ Ng6 15. Na3 {Braak,J (1878)-Lonnee,G (1733) ICCF 2009 1-0 (26)}) (3... Nc6 4. fxe5 Nh6 5. Nf3 Ng4 6. Nc3 (6. e4 O-O 7. c3 Be7 8. d4 d6 9. exd6 Bxd6 10. Qd3 Bf4 11. g3 Bh6 12. Be2 f5 13. e5 Be6 14. Nbd2 Qe8 15. c4 Rd8 16. d5 b5 17. Qc3 b4 {Vlak,J (2310)-Mostowik,D (2206) ICCF 2008 0-1 (27)}) 6... O-O 7. e3 Ngxe5 8. Be2 d5 9. O-O Nc4 10. Bxc4 dxc4 11. Qe2 Be6 12. Rab1 a6 13. Ba1 Ra7 14. Nd4 Nxd4 15. exd4 {Skaug,T (2130)-Ekelund Time,J ICCF 2013 0-1}) (3... Nf6 4. fxe5 Ng4 5. c3 Be7 6. Nf3 d6 (6... O-O 7. e3 d6 8. e6 Bxe6 9. Be2 d5 10. O-O c5 11. h3 Nf6 12. c4 Nc6 13. cxd5 Nxd5 14. Nc3 a6 15. Qc2 Ndb4 16. Qb1 c4 17. a4 f5 18. a5 {Benassi,A (2293)-Meiners,E (2343) ICCF 2012 0-1 (53)}) 7. exd6 Bxd6 8. Qa4+ Nc6 9. e3 O-O 10. Ba3 Nce5 11. Bxd6 Qxd6 12. Qd4 Qf6 13. Be2 Nxf3+ 14. Bxf3 Qh4+ 15. g3 {Benassi,A (2293)-Räßler,A (2246) ICCF 2012 0-1 (37)}) 4. fxe5 (4. Nf3 Nc6 (4... Nd7 5. a3 (5. e3 Ngf6 6. a3 Ba5 7. fxe5 dxe5 8. Nxe5 Nxe5 9. Bxe5 Ne4 10. Bd3 Qg5 11. Qf3 Nxd2 12. Nxd2 Bxd2+ 13. Kxd2 Qxe5 14. Qe4 Qxe4 15. Bxe4 c6 16. Kc3 Bd7 {Braak,J (1945)-Mäuer,K (1961) ICCF 2011 0-1 (41)}) 5... Bc5 6. fxe5 dxe5 7. Nxe5 Nxe5 8. Bxe5 Nh6 9. e3 O-O 10. Nc3 Re8 11. Bf4 Bd4 12. Nb5 Bg4 13. Qb1 Bxe3 14. dxe3 g5 15. Bg3 Rxe3+ 16. Kf2 {Braak,J (1975) -Spierenburg,P (2039) ICCF 2015 1/2 (52)}) (4... f6 5. c3 (5. e3 Nc6 6. Nh4 Nh6 7. f5 O-O 8. Bd3 d5 9. O-O Ne7 10. a3 Bc5 11. c4 e4 12. Bc2 Nhxf5 13. Nxf5 Bxf5 14. cxd5 Bg6 15. Nc3 f5 16. Bb3 Kh8 {Zylla,J (2226)-Cottarelli,F (2185) ICCF 2006 1-0 (28)}) (5. e4 Be6 6. f5 Bf7 7. Nc3 Ne7 8. a3 Ba5 9. d4 Nbc6 10. d5 Nb8 11. Bd3 c6 12. dxc6 bxc6 13. Nd2 Nd7 14. Rb1 Rb8 15. Nb3 Nc5 16. Nxa5 Qxa5 { Braak,J (1878)-Ruiter,T (2172) ICCF 2009 0-1 (31)}) 5... Ba5 6. e3 Ne7 7. fxe5 fxe5 8. Be2 Nd7 9. O-O O-O 10. Qb3+ d5 11. c4 e4 12. Ne5 Rxf1+ 13. Bxf1 Nc5 14. Qa3 Bb6 15. Bd4 Qd6 16. cxd5 {Braak,J (1914)-Látal,F (1952) ICCF 2010 1-0 (48)} ) (4... Nf6 5. fxe5 dxe5 6. Nxe5 Nc6 7. Nxc6 bxc6 8. e3 Ne4 9. g3 O-O 10. Bg2 Qe7 11. O-O Rb8 12. Qe2 Bc5 13. Bc1 Rb6 14. Rf4 Ba6 15. Qf3 Ng5 16. Qf2 { Zylla,J (2129)-Gavrijski,D (2143) ICCF 2009 0-1 (46)}) 5. e3 Bg4 (5... Nf6 6. fxe5 Nxe5 7. Nxe5 dxe5 8. Bxe5 O-O 9. a3 Be7 10. Be2 Qd5 11. Bxc7 Qxg2 12. Bf3 Qg6 13. Nc3 Bg4 14. h3 Bf5 15. h4 Bxc2 16. Qe2 Rac8 17. Bf4 {Skaug,T (2130) -Torgersen,T (1959) ICCF 2013 0-1 (36)}) 6. Be2 Bxf3 7. Bxf3 Nge7 8. O-O O-O 9. c3 Ba5 10. d4 Bb6 11. fxe5 dxe5 12. Nd2 exd4 13. cxd4 a6 14. Nc4 Ba7 15. Ba3 Re8 {Braak,J (1945)-Prieckaerts,P ICCF 2011 1-0 (25)}) 4... dxe5 5. Bxe5 Nf6 6. Nf3 (6. a3 Nc6 7. axb4 Nxe5 8. Nc3 Bg4 9. Nf3 Bxf3 10. exf3 O-O 11. Be2 Qd4 12. Nb5 Qxb4 13. O-O Qe7 14. c3 a6 15. Nd4 c5 16. Nf5 Qd7 17. Qc2 Rfd8 {Stapinski, R (1953)-Aarnos,M ICCF 2013 0-1 (37)}) 6... Nc6 (6... O-O 7. e3 Re8 8. Bc3 Bd6 9. Bd3 Bg4 10. O-O Nc6 11. a4 Ne4 12. Qe1 Nxc3 13. Nxc3 Nb4 14. Bc4 Nxc2 15. Qb1 Nxa1 16. Bxf7+ Kh8 17. Bxe8 Qxe8 18. Qxa1 {Braak,J (2010)-Heijnens,R (2291) ICCF 2020 1/2}) 7. Bb2 (7. Bc3 Bg4 8. e3 Ne4 9. Be2 Nxc3 10. Nxc3 Bxc3 11. dxc3 Qe7 12. Rb1 Rd8 13. Qc1 b6 14. O-O O-O 15. h3 Be6 16. Nd4 Ne5 17. a3 Rfe8 18. e4 c5 {Cornacchini,G (1772)-Lafrana,A ICCF 2007 1-0}) 7... O-O (7... Qe7 8. c3 (8. e3 Qxe3+ 9. Be2 Qe7 10. O-O O-O 11. Re1 Bc5+ 12. Kh1 Ng4 13. Rf1 Nf2+ 14. Rxf2 Bxf2 15. d3 Re8 16. Nc3 Bf5 17. Qf1 Bb6 18. Re1 Rad8 19. Bd1 Qb4 {Hasler, U (1683)-Douglas,S ICCF 2005 0-1 (28)}) 8... Bd6 9. Qa4 Bd7 10. e3 Ne5 11. Qb3 Nfg4 12. Nxe5 Bxe5 13. Qxb7 O-O 14. Ba3 Qh4+ 15. g3 Bxg3+ 16. Kd1 Rab8 { 0-1 (16) Spierings,J-Southwell,H (2394) ICCF 2005}) (7... Bg4 8. h3 Bd6 9. Qc1 Ne4 10. hxg4 Bg3+ {0-1 (10) Hasler,U (1683)-Kaltschmidt,A (2075) ICCF 2005}) ( 7... Ng4 8. Nc3 Bf5 9. e3 Qf6 10. Qe2 O-O 11. O-O-O Qe7 12. Nd4 Nxd4 13. exd4 Qd6 14. h3 Bxc3 15. Bxc3 Rfe8 16. Qf3 Qa3+ 17. Kb1 Ne3 18. dxe3 Be4 19. Qf2 { Braak,J (2010)-Barendswaard,W (2111) ICCF 2020 0-1 (54)}) 8. e3 Ng4 (8... Re8 9. Nc3 Bg4 10. Bd3 Ne5 11. Be2 Bxf3 12. gxf3 Bxc3 13. Bxc3 Nd5 14. Bxe5 Rxe5 15. O-O Qh4 16. f4 Re6 17. Bd3 Rh6 18. Rf2 Rd8 19. Qf3 Rb6 20. a3 {Benassi,A (2293)-Plyusnin,A (1977) ICCF 2012 1-0 (31)}) 9. Nc3 (9. Be2 Nxe3 10. Qc1 Nxg2+ 11. Kd1 Qe7 12. c3 Re8 13. Bf1 Qe4 14. cxb4 Qxf3+ {0-1 (14) Hasler,U (1683) -Blumbergs,J ICCF 2005}) 9... Qd6 (9... Qf6 10. Qe2 Re8 11. O-O-O Qd6 12. h3 Bxc3 13. Bxc3 Nf6 14. Bxf6 (14. Qb5 Ne4 15. Bd3 Nxc3 16. dxc3 Qa3+ 17. Qb2 Qxb2+ 18. Kxb2 Rxe3 19. Rde1 Rxe1 20. Rxe1 Bd7 21. Rd1 Be8 22. Be4 Ne7 23. Ne5 f6 24. Nd7 c6 25. Nc5 f5 {Stapinski,R (1997)-Bieszk,S ICCF 2009 1/2 (46)}) 14... Qxf6 15. Kb1 Re4 16. d4 Qe7 17. Re1 Bd7 18. Qf2 Qb4+ 19. Ka1 Qc3+ 20. Kb1 Qb4+ 21. Ka1 {Spierings,J-Santamaría Navarro,F (2027) ICCF 2005 0-1 (45)}) ( 9... Bf5 10. Be2 Qf6 11. Qb1 Nxe3 12. dxe3 Bxc3+ 13. Bxc3 Qxc3+ 14. Kf2 Rfe8 15. Bd3 Bxd3 16. cxd3 Nb4 17. Ne1 Qd2+ 18. Kf1 Nd5 19. Qc1 Nxe3+ {0-1 (19) Hasler,U (1683)-Salão,A ICCF 2004}) (9... Re8 10. Bb5 Qe7 11. Bd3 Qc5 12. O-O Nxe3 13. dxe3 Rxe3 14. Nd4 Nxd4 15. Na4 Nf3+ 16. Kh1 Qa5 17. gxf3 Qxa4 18. Rg1 Bf8 19. Bxg7 Bxg7 20. Rxg7+ Kxg7 21. Qg1+ {Rooijen,P-Solsona Manonelles,J (2162) ICCF 2006 0-1}) 10. a3 Ba5 11. Bd3 Nce5 12. Nxe5 Nxe5 13. Bxh7+ Kxh7 14. Qh5+ Kg8 {Zylla,J (2267)-Bjazevic,P (2245) ICCF 2008 1/2 (43)}) (3. c3 Be7 ( 3... Bc5 4. Nf3 Nc6 5. Qc2 Nf6 6. e3 a6 7. Bd3 d6 8. O-O O-O 9. Na3 b5 10. Qb3 Be6 11. Rab1 Bxb3 12. axb3 Rb8 13. b4 Ba7 14. Rbc1 Re8 15. Ra1 {Knight, D-Williams,R (1517) ICCF 2012 0-1 (30)}) 4. e4 (4. g3 c6 5. Nf3 e4 6. Nd4 d5 7. Bg2 Nf6 8. O-O O-O 9. d3 exd3 10. Qxd3 Nbd7 11. Nd2 Ne5 12. Qc2 Ng6 13. c4 c5 14. Nb5 a6 15. Nc3 d4 {Anderson,L (1193)-Williams,J (1740) ICCF 2016 0-1 (28)}) 4... Nf6 5. c4 Nxe4 6. Qe2 d5 7. Bxe5 O-O 8. f3 Bf6 9. Bxf6 Qxf6 10. fxe4 Qxa1 11. Qd1 Qe5 12. cxd5 Qxe4+ 13. Qe2 Qxb1+ 14. Qd1 Qxa2 {Vaessen,J (1143) -Heijnens,R (2291) ICCF 2020 0-1}) (3. a3 Bd6 4. e3 Nf6 5. Nc3 c6 6. Nf3 Bc7 7. Be2 d5 8. O-O O-O 9. Rb1 Re8 10. d3 b5 11. h3 a5 12. d4 Nbd7 13. dxe5 Nxe5 14. Nd4 b4 {Domenche Redondo,F (1627)-Piera i Arbat,J (1937) ICCF 2016 0-1}) (3. c4 Nc6 4. Nf3 d6 5. a3 (5. a4 Nf6 6. g3 O-O 7. Bg2 e4 8. O-O exf3 9. exf3 Bf5 10. d3 h6 11. h4 Re8 12. Bxf6 Qxf6 13. Ra2 Rad8 14. f4 Bc5 15. Bxc6 bxc6 16. Nd2 Bxd3 {Rodríguez Padilla,N-Guaniezo,A ICCF 2013 0-1}) 5... Ba5 6. e3 Nf6 7. Be2 O-O 8. Qc2 e4 9. Nd4 Nxd4 10. Bxd4 Bf5 11. Qb2 Bb6 12. Bxf6 Qxf6 13. Qxf6 gxf6 14. Nc3 c6 {Gierth,K (2204)-Martos Crespo,A ICCF 2010 1/2 (56)}) 3... Nf6 (3... f6 4. Bb2 (4. Bc3 Bxc3 5. Nxc3 d6 6. e4 Be6 7. Qh5+ g6 8. Qb5+ Nd7 9. Qxb7 Nc5 10. Qb5+ Qd7 11. d4 Nxe4 12. Nxe4 f5 13. Ng5 Ke7 14. N1h3 Nf6 15. Qe2 h6 { Buczinski,H (2201)-Reed,J ICCF 2011 1-0 (34)}) (4. Bg3 Ne7 5. c3 Ba5 6. e4 O-O 7. Bc4+ d5 8. Bb3 Kh8 9. exd5 Nxd5 10. Ne2 f5 11. Bxd5 Qxd5 12. O-O g5 13. f4 g4 14. Bf2 b6 15. Qb3 Bb7 {Dam,J (2118)-Hospers,B (1993) ICCF 2020 (38)}) 4... d6 5. e3 Qe7 6. Nf3 Nc6 7. Be2 Bf5 8. O-O O-O-O 9. d4 Qe8 10. c4 Bxb1 11. Rxb1 d5 12. cxd5 Rxd5 13. Qb3 Nge7 14. e4 Rd8 15. d5 {Silfver,T (1730)-Vanícek,J (1668) ICCF 2015 1-0}) (3... Nc6 4. Bxg7 d5 5. Bxh8 Be6 6. Bc3 Bxc3 7. Nxc3 d4 8. Na4 Qe7 9. Nb2 Bd5 10. Nf3 Bxf3 11. gxf3 O-O-O 12. Nd3 Nf6 13. Qb1 Nd5 14. Qb2 b6 15. Rg1 {Kirk,T (1513)-Gomez,P (1693) ICCF 2019 1-0}) 4. c4 (4. Nc3 Ba5 (4... Nc6 5. Bxf6 Qxf6 6. Nd5 Qd6 (6... Qd8 7. Nxb4 Nxb4 8. a3 (8. e3 O-O 9. c3 Nd5 10. Bd3 Nf6 11. Ne2 h6 12. f3 d5 13. O-O Re8 14. a4 c5 15. a5 Bd7 16. Qc1 Bc6 17. Qa3 Qe7 18. Rab1 Nd7 19. f4 Nf6 {Walker,J (1789)-Ewan,R (2236) ICCF 2016 0-1 (53)}) 8... Nd5 9. e3 O-O 10. Nf3 Re8 11. c4 Nf6 12. Qc2 b6 13. Be2 Bb7 14. h4 c5 15. a4 d5 16. a5 d4 17. O-O Qd6 18. Nh2 {Walker,J (1808) -Woodhouse,S (1636) ICCF 2017 1/2 (30)}) 7. Nxb4 Qxb4 (7... Nxb4 8. a3 (8. c3 Nc6 9. e3 O-O 10. d4 b6 11. Nf3 Bb7 12. Bd3 f5 13. O-O Na5 14. Qe2 Qf6 15. Rac1 Rae8 16. c4 Re7 17. c5 d6 18. cxd6 cxd6 19. Rc3 g6 {Walker,J (1824)-Kappel,R (1808) ICCF 2017 1/2 (35)}) 8... Nc6 9. e3 O-O 10. Qh5 Qf6 11. Rb1 Re8 12. Nf3 d6 13. Be2 Rb8 14. O-O Bf5 15. Rfc1 g6 16. Qh6 Qg7 17. Qg5 h6 {0-1 (17) Moser, M (1914)-Motúzová,M (1993) ICCF 2014}) 8. Nf3 (8. e3 O-O 9. c3 Qc5 10. Qc2 Re8 11. Bd3 g6 12. Nf3 d5 13. Rb1 b6 14. O-O Bd7 15. Be2 Qd6 16. d4 Bf5 17. Bd3 Bxd3 18. Qxd3 Na5 19. Nd2 Rac8 {Carradori,D-Francescone,G ICCF 2010 1/2 (49)}) 8... O-O 9. e3 d5 (9... d6 10. Be2 Bf5 11. O-O Qa4 12. c4 Qxd1 13. Rfxd1 Rfe8 14. d4 Kf8 15. Rac1 h6 16. h3 Be4 17. Nd2 Bg6 18. Bf3 Nb4 19. Rc3 Rab8 20. c5 Nxa2 21. Ra3 {Heß,H (2339)-Shitrit,K (2195) ICCF 2009 1-0 (34)}) 10. Be2 (10. Bd3 Bg4 (10... Rb8 11. Rb1 Qd6 12. O-O Nb4 {0-1 (12) Walker,J (1943)-Yeung,C (1642) ICCF 2008}) 11. Rb1 Bxf3 12. gxf3 Qa3 13. f4 Rfd8 14. Rxb7 Rab8 15. Rxc7 Qd6 16. Bxh7+ Kf8 17. Rxc6 Qxc6 18. Bd3 Rb2 19. a4 Qxa4 20. O-O Rb6 21. Qh5 Rh6 {Walker,J (1968)-Daatselaar,J (2233) ICCF 2006 1-0 (57)}) 10... Bf5 11. O-O Rab8 12. d4 Rfe8 13. h3 f6 14. Bd3 Be4 15. Nd2 Bxd3 16. cxd3 {Richter,W (2200) -Maes,J (2300) ICCF 2014 1-0 (45)}) (4... c6 5. Rb1 (5. a3 Be7 6. h3 d5 7. e3 Nbd7 8. Bf4 Ne4 9. Bd3 Nxc3 10. dxc3 O-O 11. Ne2 Qa5 12. O-O Nc5 13. c4 Nxd3 14. cxd3 dxc4 15. dxc4 Bf6 16. Rc1 Rd8 {Böhnke,H (2049)-Besozzi,F ICCF 2009 1/ 2 (65)}) (5. Nf3 d5 6. Rb1 Bd6 7. d4 O-O 8. e3 Re8 9. Bd3 b5 10. a4 b4 11. Bxd6 Qxd6 12. Na2 a5 13. c3 bxc3 14. O-O Bg4 15. Nxc3 Nbd7 16. Qc2 Bxf3 {Walker,J (1968)-Haavisto,P ICCF 2006 0-1 (60)}) 5... a5 (5... Be7 6. Nf3 (6. e3 d5 7. Bf4 Nbd7 8. h3 O-O 9. Nf3 Re8 10. Bd3 a6 11. O-O Nc5 12. Be2 Nce4 13. Nxe4 dxe4 14. Nd4 c5 15. Nb3 b5 16. Qc1 Bd7 17. c4 b4 {Walker,J (1789)-Rallabandi,P (2021) ICCF 2016 0-1 (49)}) 6... d5 7. e3 (7. Bxf6 Bxf6 8. d4 O-O 9. e3 Qc7 10. Bd3 Bg4 11. h3 Be6 12. Ne2 c5 13. c3 Nc6 14. dxc5 Nb8 15. Rb2 Nd7 16. Qb1 g6 17. Rxb7 Qc8 18. Rb4 Nxc5 {Gardner,A-Lloyd,G (2258) ICCF 2006 1/2 (41)}) 7... Nbd7 8. Bg3 O-O 9. Bd3 Nc5 10. Be2 Qa5 11. O-O Nfe4 12. Nxe4 Nxe4 13. c4 Nxg3 14. fxg3 Qxa2 15. Ra1 Qb2 16. cxd5 cxd5 17. Nd4 {Walker,J (1932)-Behling,H (2167) ICCF 2011 0-1 (38)}) (5... Ba5 6. Bd6 Bc7 7. Bxc7 Qxc7 8. e3 O-O 9. Qf3 d5 10. Qg3 Qe7 11. Nf3 Re8 12. Qf4 Nbd7 13. Be2 Nc5 14. O-O Nce4 15. Nxe4 Nxe4 16. h4 h6 17. h5 {Taulien,H (2350)-Leone,F (2319) ICCF 2012 1/2 (37)}) (5... Qa5 6. e3 Qxe5 7. Rxb4 Qe7 8. Rb1 d5 9. d4 O-O 10. Nf3 Nbd7 11. Bd3 Ne4 12. Ne2 b5 13. c3 a5 14. O-O Ba6 15. Rc1 f5 16. Re1 c5 17. dxc5 {Taulien,H (2398) -Gronemann,J (2222) ICCF 2009 (26)}) 6. e3 (6. Na4 b5 7. c3 Be7 8. Bd4 Bb7 9. Nf3 {Taulien,H (2398)-Bösenberg,E (2488) ICCF 2009}) 6... d5 7. Bd3 (7. Nf3 Nbd7 8. Bf4 Bxc3 9. dxc3 O-O 10. Qd4 b5 11. Be2 Re8 12. O-O Ne4 13. Nd2 g5 14. Bg3 Ndc5 15. Nxe4 Nxe4 16. f3 Nxg3 17. hxg3 Qe7 18. Kf2 Bf5 {Taulien,H (2391) -Neumann,B (2391) ICCF 2008 0-1 (27)}) 7... Nbd7 (7... O-O 8. Bxf6 Qxf6 9. Nce2 Nd7 10. c3 Bd6 11. Bc2 Ne5 12. Ng3 b5 13. d4 Nc4 14. Qh5 g6 15. Qh6 Qe7 16. Bd3 f5 17. Bxc4 bxc4 18. Nf3 f4 19. Ne2 {Ott,P-Schmidt,P ICCF 2017 0-1 (31)}) 8. Bd4 O-O 9. Nf3 Re8 10. O-O c5 11. Bxf6 Nxf6 12. Nb5 c4 13. Be2 Bd7 14. Nbd4 Ne4 15. c3 Bc5 16. Rxb7 {Walker,J (1932)-Dempster,D (1849) ICCF 2011 1-0 (44)}) ( 4... Be7 5. e3 (5. Rb1 O-O 6. Bxf6 Bxf6 7. Nd5 d6 8. e3 Nd7 9. Nf3 Nb6 10. Nxf6+ Qxf6 11. Bd3 Be6 12. a3 c5 13. c3 Rfe8 14. O-O h6 15. Re1 Rad8 16. h3 Ba2 {Belov,P-Sychov,A (2232) ICCF 2010 1/2 (39)}) 5... O-O (5... Nc6 6. Bxf6 Bxf6 7. d4 d5 8. Rb1 Ne7 9. Bd3 c5 10. Nf3 Bg4 11. O-O cxd4 12. exd4 Rc8 13. Rb3 O-O 14. h3 Be6 15. Qd2 b6 16. Re1 Nc6 17. Ne2 {Heß,H (2355)-Kapfenstein,A (1839) ICCF 2006 1/2 (28)}) 6. Rb1 (6. Nf3 c5 7. Bc4 d6 8. Bxf6 Bxf6 9. O-O Nd7 10. d4 Nb6 11. Bd5 Re8 12. Qd3 g6 13. Rfe1 Bg7 14. e4 cxd4 15. Nxd4 Nxd5 16. Nxd5 Be6 17. Nf4 Bd7 {Belov,P-Ilyasov,A (2319) ICCF 2010 1/2 (45)}) 6... d5 7. Bd3 (7. Nf3 c5 8. Bg3 (8. Be2 Nc6 9. Bg3 a6 10. O-O b5 11. d4 Qa5 12. Ne5 Nxe5 13. dxe5 Qxc3 14. exf6 Bxf6 15. Bd6 Rd8 16. Rb3 Rxd6 17. Rxc3 Bxc3 18. Qd3 b4 { Fagerbekk,E (2215)-Colucci,P (2216) ICCF 2013 0-1 (71)}) 8... d4 9. exd4 cxd4 10. Nb5 Nc6 11. Nc7 Rb8 12. Na6 bxa6 13. Bxb8 Bf5 14. Bg3 Nb4 15. Rxb4 Bxb4 16. Be2 d3 17. cxd3 Qa5 18. a4 Re8 {Heß,H (2321)-Berza,S (2361) ICCF 2010 0-1 (56)} ) 7... Nbd7 8. Bf4 Nc5 9. Nge2 Nxd3+ (9... c6 10. O-O Nh5 11. Be5 f6 12. Bg3 Nxg3 13. fxg3 Bg4 14. a4 Qd7 15. h3 Be6 16. Nd4 Bf7 {Reed,A (2256)-Gardner,A (2271) ICCF 2020 1/2 (60)}) 10. cxd3 b6 11. Nb5 c5 12. Nc7 Rb8 13. Nxd5 Nxd5 14. Bxb8 Ba6 15. Be5 Bxd3 16. Rc1 {Millstone,M (2447)-Figlio,G (2483) ICCF 2008 1/2 (36)}) (4... O-O 5. Bxf6 Qxf6 6. Nd5 Qd4 7. Nxb4 Qxb4 8. e3 d5 9. Nf3 Nd7 10. Be2 Nf6 11. O-O b6 12. h3 Re8 13. a4 Ne4 14. a5 Bd7 15. Qb1 Qd6 16. axb6 {Heß,H (2328)-Senzacqua,F (2114) ICCF 2013 1-0 (92)}) (4... Bxc3 5. Bxc3 d5 6. e3 O-O 7. Nf3 Ne4 8. Bb2 c5 9. Be2 Qb6 10. Rb1 Qe6 11. O-O b6 12. Ne5 Bb7 13. Nd3 Rd8 14. Nf4 Qd6 15. d3 Ng5 16. Nh5 {Böhnke,H (2225)-Benton,C ICCF 2013 1-0 (44)}) 5. e3 (5. Nf3 d6 (5... O-O 6. e3 Re8 (6... Nc6 7. Bxf6 (7. Bc4 d6 8. Bg3 Bg4 9. O-O Bxc3 10. dxc3 Ne4 11. Bh4 Bxf3 12. Bxd8 Bxd1 13. Raxd1 Raxd8 14. Rd3 Ne5 15. Rd4 Nxc3 16. Re1 c5 17. Rf4 g5 18. Rf5 Nxc4 {Hanamitsu,I (1811) -Haznedaroglu,K (1990) ICCF 2006 0-1 (26)}) 7... Qxf6 8. Nd5 Qd6 9. c4 (9. Nf4 Re8 10. Be2 Ne5 11. Nxe5 Qxe5 12. O-O c6 13. d4 Qg5 14. c4 Bc7 15. Re1 Ba5 16. Rf1 Bc7 {Aymard,M (2010)-Haznedaroglu,K (1990) ICCF 2006 1/2}) 9... b6 10. Be2 Bb7 11. O-O Rad8 (11... Rae8 12. Qa4 Ne7 13. Nf4 Ng6 14. Nxg6 Bc6 15. Qd1 Qxg6 16. g3 Be4 17. Nd4 {Böhnke,H (2136)-Gavrijski,D (2238) ICCF 2008 1/2 (58)}) 12. d4 Ne7 13. Nxe7+ Qxe7 14. Nd2 c5 15. d5 Bc3 16. Rb1 g6 17. Qc2 Bg7 18. a4 { Grosse,M (1687)-Fajs,B ICCF 2006 0-1}) 7. Bd3 (7. Be2 c6 8. Bf4 d5 9. O-O h6 10. h3 a6 11. Nd4 c5 12. Nb3 Bxc3 13. dxc3 c4 14. Nd4 Ne4 15. Bf3 Nxc3 16. Qd2 Ne4 17. Bxe4 Rxe4 18. Rfd1 {McAtear,A-Herriot,B (2199) ICCF 2019 1/2 (50)}) 7... d6 8. Bxf6 (8. Bg3 Bxc3 9. dxc3 Nbd7 10. Bh4 Nc5 11. Nd4 h6 12. O-O Bd7 13. c4 a6 14. Re1 g5 15. Bg3 Nfe4 16. f3 Nxg3 17. hxg3 Qf6 18. g4 Re5 19. Qd2 Rae8 {Taulien,H (2398)-Shpakovsky,A (2350) ICCF 2009}) 8... Qxf6 9. Nd5 (9. Ne4 Qe7 10. Ng3 Nd7 11. c3 d5 12. O-O c6 13. e4 Nc5 14. Bc2 dxe4 15. Nxe4 Nxe4 16. Bxe4 Be6 17. Re1 g6 18. Qa4 Qc7 19. Ng5 b5 20. Qa3 Bd7 {Soyek,R (2184)-Albano, A (2240) ICCF 2011 1/2 (47)}) 9... Qh6 10. O-O c6 11. Nf4 Nd7 12. c4 Rb8 13. Rc1 Ne5 14. Be2 Ng6 15. Nxg6 Qxg6 16. Qa4 Bb6 17. Qa3 {Millstone,M (2447) -Boger,R (2623) ICCF 2008 1/2}) (5... Nc6 6. Bxf6 Qxf6 7. Nd5 Qd6 8. e4 O-O 9. Bd3 Ne5 10. Nxe5 Qxe5 11. O-O c6 12. Ne3 d5 13. exd5 cxd5 14. Rb1 Bc7 15. g3 b6 16. c3 Bh3 17. f4 {Rodrigues,P-Gomes,E (1744) ICCF 2010 1-0 (50)}) 6. Bxf6 Qxf6 7. Nd5 (7. Ne4 Qe7 8. Ng3 f5 9. c3 O-O 10. e3 f4 11. Ne2 fxe3 12. fxe3 d5 13. Ng3 c5 14. Be2 Nc6 15. O-O Be6 16. Rb1 a6 17. Qc2 c4 18. d3 Rae8 {Mujunen,M (2245)-Ruokokoski,H (2188) ICCF 2015 0-1 (66)}) 7... Qh6 (7... Qd8 8. e3 O-O 9. Be2 c6 10. Nf4 Nd7 11. O-O Nf6 12. c4 Rb8 13. d4 Re8 14. Qc2 Qe7 15. Bd3 Bg4 16. Nd2 g6 17. h3 Bd7 18. Rfd1 Bc7 19. Nf3 {Torgersen,T (2077)-Abdulmanov,E (2257) ICCF 2014 1/2 (44)}) 8. c3 (8. e3 c6 9. c4 (9. Nf4 O-O 10. Nd4 d5 11. Be2 Bc7 12. Nd3 Nd7 13. f4 c5 14. Nf3 c4 15. Nf2 Nc5 16. O-O Bd7 17. Rb1 a6 18. d4 Na4 19. Qd2 Bb5 20. c3 Ba5 {Walker,J (1789)-Rawlings,A (2346) ICCF 2016 0-1 (38)}) 9... Bd7 10. Qa4 Bxd2+ 11. Nxd2 cxd5 12. Qa3 d4 13. Ne4 O-O 14. Qxd6 Qxd6 15. Nxd6 dxe3 16. fxe3 b6 17. Be2 Na6 18. Rd1 Nc5 19. O-O Rad8 {Marquardt, G (2198)-Kratochvíl,V (2245) ICCF 2018 1/2 (47)}) (8. g3 c6 9. Nf4 O-O 10. Bg2 Nd7 11. Rb1 Ne5 12. c3 Bb6 13. h4 Ng6 14. Nxg6 Qxg6 15. h5 Qh6 16. Nd4 Re8 17. Kf1 d5 18. e3 c5 19. Ne2 Qd6 {Taulien,H (2398)-Weber,K (2249) ICCF 2009}) 8... c6 9. Qa4 (9. Ne3 O-O 10. g3 f5 11. Ng2 Nd7 12. e3 Nc5 13. Be2 Bd7 14. O-O b5 15. Qc2 a6 16. Nd4 d5 17. Nb3 Bb6 18. Nxc5 Bxc5 19. a4 Qf6 20. h4 g6 {Taulien, H (2391)-Pirs,M (2309) ICCF 2008 1/2 (40)}) (9. Nd4 cxd5 10. Qa4+ Nc6 11. Nxc6 Bxc3 12. Nb8+ Ke7 13. dxc3 Be6 14. Na6 bxa6 15. g3 Qf6 16. Rc1 Rac8 17. Bg2 Rxc3 18. O-O Rhc8 19. Rb1 Qe5 20. Qxa6 Kf8 {Walker,J (1789)-Sutton,A (2166) ICCF 2016 0-1 (37)}) 9... Bd8 10. Qe4+ (10. Ne3 O-O 11. g3 d5 (11... Nd7 12. Qc2 Ne5 13. Nd4 d5 14. Bg2 Re8 15. O-O Rb8 16. Rab1 Bd7 17. f4 Ng4 18. Nxg4 Bxg4 19. e3 Bb6 20. a4 Bd7 21. Rb2 Qf6 22. Ra1 h5 23. a5 {Reed,A (2094)-Norman, N (2180) ICCF 2016 1/2 (29)}) 12. Bg2 f5 13. Ne5 f4 14. Nxd5 Qe6 15. Qb3 Kh8 16. gxf4 cxd5 17. Bxd5 Qe7 18. Qb4 Qxb4 19. cxb4 Bf6 20. Rc1 Bxe5 21. fxe5 Nc6 {Schmidt,K (2112)-Gongora-Montes,B (2072) ICCF 2018 1/2 (48)}) 10... Qe6 11. Qxe6+ fxe6 12. Ne3 e5 13. h4 Na6 14. g3 Nc5 15. Bg2 O-O 16. O-O g6 {Heß,H (2319)-Johansen,A (2383) ICCF 2017 1/2 (41)}) 5... d6 (5... Nc6 6. Bxf6 (6. Bg3 d5 (6... O-O 7. Nf3 Qe8 8. Bd3 d6 9. O-O Bxc3 10. dxc3 Ne4 11. Bxe4 Qxe4 12. Qd3 Bf5 13. Qxe4 Bxe4 14. Nd4 f5 15. f3 Bd5 16. Rfb1 b6 17. Rb5 Nxd4 18. cxd4 { Walczak,A (2369)-Sadowski,M (2152) ICCF 2006 1/2 (39)}) 7. Nf3 Ne4 8. Nxe4 dxe4 9. Ne5 Nxe5 10. Bxe5 O-O 11. Rb1 Qd5 12. Rb5 Qxa2 13. Qa1 Qxa1+ 14. Bxa1 b6 15. Rg5 f6 16. Bc4+ Kh8 17. Rd5 Bb7 {Walker,J (1932)-Siigur,J (2478) ICCF 2011 0-1 (37)}) (6. Qf3 Nxe5 7. Qg3 Qe7 8. Qxg7 Rg8 9. Qh6 Bxc3 10. dxc3 b6 11. Ne2 Bb7 12. Qh3 O-O-O 13. f3 Nd5 14. e4 Ne3 15. Nd4 Qa3 16. Kd2 Nxf1+ 17. Raxf1 Nc4+ { Walker,J (1932)-Peczkowski,M (2278) ICCF 2011 0-1}) 6... Qxf6 7. Nd5 Qd6 8. c4 (8. Nf4 Ne5 (8... O-O 9. c3 Re8 10. Ngh3 Qf6 11. Nd5 Qh4 12. Nhf4 d6 13. Bb5 Bd7 14. Qa4 Bb6 15. Rb1 Rad8 16. O-O Ne5 17. Bxd7 Nxd7 18. d4 c6 19. Nxb6 axb6 20. Qa7 {Ling,A (2062)-Haznedaroglu,K (1990) ICCF 2006 1/2 (27)}) 9. Nd3 c6 10. Nf3 Nxf3+ 11. Qxf3 O-O 12. Qh5 f5 13. Be2 b6 14. c3 Ba6 15. Nf4 Bxe2 16. Nxe2 c5 17. Qf3 Rae8 18. Nf4 Re4 19. Rc1 Rfe8 {Aymard,M (2010)-Bjazevic,P ICCF 2006 0-1 (71)}) 8... Ne5 9. Qb3 (9. f4 Ng6 10. Qa4 b6 11. Qc2 O-O 12. Bd3 Re8 13. Ne2 Bb7 14. O-O b5 15. Ndc3 Qc6 16. Nd5 Qc5 17. Ndc3 bxc4 18. Bxg6 fxg6 19. Nd4 Rab8 20. Rab1 a6 {Ling,A (2062)-Bjazevic,P ICCF 2006 0-1 (51)}) 9... O-O 10. f4 Ng6 11. Ne2 c6 12. Ndc3 Re8 13. g3 b6 14. Bg2 Ba6 15. Rc1 Rab8 16. Qc2 Qc5 17. f5 {Gardner,A-Guffogg,C ICCF 2006 1-0 (42)}) 6. Bxf6 Qxf6 7. Nd5 Qh6 8. Be2 c6 9. Nf4 O-O 10. c3 (10. Nf3 d5 11. O-O Nd7 12. Rc1 Bc7 13. g3 Re8 14. c4 dxc4 15. Bxc4 Nb6 16. Bb3 Bxf4 17. exf4 Bg4 18. Rc5 Rad8 19. Rg5 Bxf3 20. Qxf3 Qf6 21. Rd1 Rd7 {Belov,P-Silin,V (2289) ICCF 2010 1/2 (40)}) 10... Bc7 11. Nf3 d5 12. g3 Re8 13. O-O Nd7 14. Nd4 Ne5 15. Rb1 a6 {O'Brien,P-Nettles,P ICCF 2014 1/ 2 (30)}) (4. c3 Be7 (4... Ba5 5. e3 O-O (5... Nc6 6. Bg3 d5 7. d4 Ne4 8. Qc2 h5 9. f3 Nxg3 10. hxg3 h4 11. Ne2 Qg5 12. f4 Qe7 13. Qd3 g6 14. Nd2 Bf5 15. Qb5 O-O-O 16. g4 Bxc3 17. Nxc3 {Martínez Muñoz,J (1720)-Bussqvist,Å (1891) ICCF 2013 0-1}) 6. Qf3 (6. Nf3 d5 7. d4 Ne4 8. Qb3 Nc6 9. Bg3 Nxg3 10. hxg3 Ne7 11. Bd3 h6 12. Nbd2 c6 13. Qc2 Ng6 14. O-O Bc7 15. e4 b6 16. e5 c5 17. Rfe1 Ne7 { Champion,W (1842)-Duncovich,M (1757) ICCF 2007 1-0 (62)}) 6... Ne8 7. Bd3 (7. c4 c5 (7... d6 8. Bc3 Nc6 9. Bxa5 Nxa5 10. Nc3 Be6 11. Qf4 Qf6 12. Qxf6 Nxf6 13. d3 a6 14. Rb1 c6 15. a4 Rfe8 16. Nge2 Rad8 17. Nd4 Bc8 18. Nb3 Nxb3 19. Rxb3 {Taulien,H-Dyda,T ICCF 2007 1-0 (64)}) 8. Bc3 Nc6 9. Nh3 Bc7 10. Nf4 Bxf4 11. Qxf4 d5 12. cxd5 Qxd5 13. f3 Be6 14. Be2 Qd6 15. Qxd6 Nxd6 16. a4 b6 { Taulien,H-Manole,G (2380) ICCF 2007 1/2 (35)}) 7... d5 8. Ne2 c5 9. O-O Nc6 10. Bf4 Nf6 11. h3 Be6 12. Bc2 Qd7 13. Rc1 Rac8 14. Na3 a6 15. Ng3 b5 16. Bg5 { Stefanov,P (2429)-Perry,D (2456) ICCF 2008 0-1 (62)}) 5. d4 (5. e4 O-O 6. Qc2 ( 6. d4 Nxe4 7. Qg4 Ng5 8. h4 d6 9. Qg3 Ne6 10. Bf4 Nxf4 11. Qxf4 Re8 12. Kd2 Nd7 13. Bc4 d5 14. Bxd5 Nf6 15. Bb3 Bd6 16. Qf3 Bg4 17. Qd3 Ne4+ {Martínez Muñoz, J-Polikarpov,Y ICCF 2013 0-1}) 6... d5 7. exd5 Qxd5 8. d4 (8. Bxc7 Re8 9. Ne2 Na6 10. Bg3 Nc5 11. Nf4 Bd6+ 12. Be2 Bxf4 13. Bxf4 Qxg2 14. Rf1 Rxe2+ 15. Kxe2 Bg4+ 16. Ke3 Re8+ 17. Kd4 Qd5# {0-1 (17) Martínez Muñoz,J-Vodicka,M (2245) ICCF 2013}) 8... Nbd7 9. Bxc7 Re8 10. Ne2 Qc6 11. Bg3 Nd5 12. Qd2 N7b6 13. f3 Nc4 14. Qc1 Nce3 15. Kf2 Bf5 16. c4 Bg5 {Balañá Romero,R (1857)-Urban,M (2253) ICCF 2014 0-1}) (5. e3 d5 (5... O-O 6. Nf3 (6. d4 d5 7. Bd3 Nbd7 8. Bf4 Re8 9. Ne2 Nf8 10. h3 c5 11. O-O c4 12. Bc2 Ng6 13. Bh2 Bd6 14. Bxd6 Qxd6 15. Nd2 b5 16. Ng3 Bd7 17. e4 dxe4 {Blechar,M (2230)-Weiss,L (2036) ICCF 2007 0-1 (45)}) ( 6. Bxf6 Bxf6 7. d4 d5 8. Bd3 c5 9. Nd2 (9. Nf3 Nc6 10. O-O Qa5 11. Qc2 g6 12. Nbd2 c4 13. Be2 Bf5 14. Qc1 b5 15. a4 b4 16. cxb4 Nxb4 17. Qc3 Rfc8 18. Ne1 Nc6 19. Ra3 Be7 {0-1 (19) Champion,W (1852)-Buchaillot,L (2098) ICCF 2008}) (9. Ne2 Nc6 10. h3 c4 11. Bc2 b5 12. a3 Bg5 13. Nd2 f5 14. O-O Qd6 15. f4 Be7 16. Nf3 a5 {Nicklich,W (2242)-Zakharov,O (2247) ICCF 2011 1/2 (47)}) 9... Re8 10. Ne2 Nc6 11. dxc5 Ne5 12. Nb3 Nxd3+ 13. Qxd3 Re5 14. Nf4 Bf5 15. Qb5 b6 16. O-O bxc5 17. Qxc5 a6 {Taulien,H-Heimonen,A (2077) ICCF 2006 1-0 (39)}) 6... Nc6 (6... c5 7. d4 d6 8. Bg3 Nc6 9. Bb5 a6 10. Ba4 b5 11. Bc2 Be6 12. O-O Rc8 13. Bh4 cxd4 14. exd4 Nd5 15. Qd3 g6 16. Bxe7 Ncxe7 17. Ng5 b4 18. Nxe6 {Martínez Muñoz, J-Cotura Vidal,L (1883) ICCF 2012 0-1 (29)}) 7. d4 Nxe5 8. Nxe5 d6 9. Nd3 c5 10. Nd2 Qa5 11. Qc2 Bf5 12. Qb3 Ne4 13. Nxe4 Bxe4 14. f3 Bd5 15. Qb2 Bh4+ 16. Kd1 f5 17. c4 {Peardon,M-Abolina,M (2051) ICCF 2005 0-1}) (5... Nc6 6. Bg3 O-O 7. d4 d5 8. Nf3 Ne4 9. Bd3 h5 10. h4 Nxg3 11. fxg3 Bd6 12. Ne5 g6 13. Nxg6 Bxg3+ 14. Kd2 fxg6 15. Bxg6 Bg4 16. Qb3 Na5 17. Qb5 {Martínez Muñoz, J-Hrynovets,I ICCF 2012 0-1}) 6. d4 (6. Bb5+ Bd7 7. c4 Bxb5 8. cxb5 O-O 9. Nf3 Nbd7 10. Bc3 Nc5 11. d3 Qd7 12. a4 b6 13. Nbd2 Nxd3+ 14. Ke2 Nc5 15. h3 Nfe4 16. Nxe4 dxe4 17. Ne5 Qe6 {Bray,P (1594)-Jones,P (1691) ICCF 2018 0-1 (34)}) 6... c5 7. Bxf6 (7. Bb5+ Nc6 8. Qa4 Bd7 9. Bxf6 Bxf6 10. dxc5 d4 11. exd4 a6 12. Bd3 Nxd4 13. Qb4 Bc6 14. Nf3 Nxf3+ 15. gxf3 Qxd3 16. Rg1 Rd8 17. Na3 Bxf3 { 0-1 (17) Martínez Muñoz,J-Da-Riva Alonso,J (2233) ICCF 2012}) (7. Nf3 Nc6 8. Bb5 Ne4 9. O-O O-O 10. Qd3 Bf5 11. Qe2 f6 12. Bg3 c4 13. Nh4 Nxg3 14. fxg3 Bd3 15. Qg4 f5 16. Nxf5 g6 17. Nxe7+ Qxe7 18. Rxf8+ Rxf8 {Martínez Muñoz,J (1720) -Steel,A ICCF 2013 0-1 (25)}) 7... Bxf6 8. dxc5 O-O 9. Bd3 Nd7 10. Qh5 h6 11. Qxd5 Qa5 12. Qe4 g6 13. Qc4 Nxc5 14. Bxg6 Be6 15. Qf4 fxg6 16. Ke2 Bxc3 { Martínez Muñoz,J (1720)-Ralls,R ICCF 2013 0-1}) (5. Nf3 d5 6. e3 (6. g3 O-O 7. Bg2 Re8 8. O-O c5 9. d4 Nc6 10. Nbd2 Ng4 11. Bh3 Ngxe5 12. dxe5 Bxh3 13. Re1 g5 14. Nb3 g4 15. Nfd2 Nxe5 16. f4 gxf3 17. Nxf3 Bf6 {Pandel,B-Malmström,J (1834) ICCF 2017 0-1}) 6... Nbd7 (6... O-O 7. Be2 Nbd7 8. O-O Nxe5 9. Nxe5 c5 10. f4 c4 11. Qc2 Re8 12. d4 cxd3 13. Qxd3 Bd6 14. Nd2 Bxe5 15. fxe5 Rxe5 16. Nf3 Bf5 {Slupski,M-Reed,A (1985) ICCF 2011 0-1 (34)}) 7. Bxf6 Nxf6 8. d4 O-O 9. Bd3 c5 10. O-O c4 11. Bc2 Bd6 12. Nbd2 Qa5 13. Nb1 Re8 14. Qc1 Ne4 15. Bxe4 dxe4 16. Nfd2 Qh5 {Peardon,D (1802)-Kolodziejski,M (1896) ICCF 2007 0-1}) (5. Bxf6 Bxf6 6. d4 d5 7. Nf3 c5 8. Na3 (8. e3 c4 9. e4 dxe4 10. Nfd2 Nc6 11. Bxc4 Bf5 12. O-O O-O 13. Na3 Bg6 14. Be2 Ne7 15. Qb3 b5 16. Nxb5 a6 17. Na3 Rb8 {Cottle,N (1731)-Rovatti,R ICCF 2016 0-1}) 8... cxd4 9. Nxd4 Qa5 10. Nb1 Nc6 11. Qd2 Nxd4 12. cxd4 Qxd2+ 13. Nxd2 Bxd4 14. Rd1 Bf5 15. Rc1 Kd7 16. e3 Bb2 {Vaessen,J (1815)-Koopmans,P (1879) ICCF 2016 0-1 (25)}) (5. h3 Nc6 6. Bh2 d5 7. Nf3 O-O 8. e3 Re8 9. Bb5 a6 10. Ba4 Bf5 11. Bxc6 bxc6 12. Nd4 Bd7 13. O-O c5 14. Nb3 c4 15. Nd4 c5 16. Ne2 Bf5 {Plume,G-Lelis,E ICCF 2005 1-0}) 5... Nc6 (5... O-O 6. Nf3 d5 (6... d6 7. Bxf6 Bxf6 8. e3 c5 9. Be2 Qe7 10. O-O d5 11. dxc5 Qxc5 12. Nd4 Nc6 13. Qb3 Na5 14. Qa3 b6 15. Qxc5 bxc5 16. Nb3 Nxb3 17. axb3 Rb8 18. Rxa7 {Gaspar,F (1588)-Larson,M ICCF 2016 1-0}) 7. e3 Nbd7 8. Bd3 (8. Bg3 Ne4 9. Bd3 c5 10. O-O Nxg3 11. hxg3 c4 12. Bf5 b5 13. Qc2 Nf6 14. Bxc8 Rxc8 15. Nbd2 b4 16. Ne5 a5 17. Ndf3 Ne4 {Eraclides,G (1819)-Murillo Subía,A (1760) ICCF 2016 0-1 (26)}) 8... Nxe5 9. dxe5 Ne4 10. Qc2 f5 11. O-O Nc5 12. Rd1 Bd7 13. Nbd2 Qe8 14. Nb3 Nxd3 15. Qxd3 c6 16. Nbd4 Rd8 17. a4 {Stefanov,P (2429)-Mlynarcík, S (2419) ICCF 2008 0-1 (36)}) 6. Bxf6 Bxf6 7. e3 O-O 8. Bd3 d5 9. Nd2 (9. Ne2 Re8 10. O-O g6 (10... Ne7 11. Qc2 g6 12. Nd2 Bg7 13. Rab1 b6 14. Ng3 Be6 15. f4 f5 16. Nf3 c5 17. Bb5 Rf8 18. dxc5 bxc5 19. Rfd1 Qc7 20. c4 d4 21. exd4 cxd4 22. Nxd4 {Blechar,M (2230)-Cencetti,A ICCF 2007 1/2 (33)}) (10... Bg5 11. h3 Qd6 12. Qc2 g6 13. Nd2 b6 14. e4 dxe4 15. Nxe4 Qe7 16. Nxg5 Qxg5 17. f4 Qe7 18. Rae1 f5 19. Nc1 Be6 20. Bb5 Qd6 21. Qa4 Bd7 22. Nd3 {Stefanov,P (2429) -Mrkvicka,J (2484) ICCF 2008 1/2 (34)}) 11. Nd2 Ne7 12. Nf4 c6 13. Rb1 Qc7 14. Qf3 Bg5 15. Rfc1 Bxf4 16. exf4 Bf5 17. g3 Bxd3 18. Qxd3 Nf5 19. Re1 Qd7 20. Nf1 Nd6 {Blechar,M (2230)-Cross,G (2024) ICCF 2007 1/2}) 9... Ne7 (9... Re8 10. Ngf3 Na5 11. c4 c5 12. O-O dxc4 13. Nxc4 Bg4 14. Qc2 Nxc4 15. Bxc4 Bxf3 16. gxf3 cxd4 17. Rad1 Rc8 18. Qb3 Re7 19. Rfe1 a6 20. exd4 b5 21. Bf1 {Hansen, R-Thys,H (1729) ICCF 2014 0-1 (27)}) 10. Ne2 g6 11. Rb1 c5 12. O-O Qc7 13. Re1 Rd8 14. e4 cxd4 15. cxd4 dxe4 {Stefanov,P (2409)-Parushev,A (2350) ICCF 2008 1/ 2 (47)}) (4. a3 Be7 (4... Ba5 5. e3 (5. Nf3 d5 (5... O-O 6. Nc3 (6. g3 Nc6 7. Bb2 d5 8. Bg2 {1-0 (8) Slupski,M-Li,J ICCF 2011}) 6... c6 7. g3 d5 8. Bg2 Nbd7 9. Bf4 Bxc3 10. dxc3 Ne4 11. O-O Nxc3 12. Qd3 Na4 13. Qd2 Re8 14. Nd4 Ndc5 15. Rab1 Qf6 16. Rfd1 Bd7 17. Bg5 {Coope,D (1870)-Stefanov,V ICCF 2017 0-1 (57)}) 6. e3 (6. Bc3 c5 7. Bxa5 Qxa5 8. g3 O-O 9. Bg2 Re8 10. O-O Nc6 11. d3 (11. e3 d4 12. exd4 Nxd4 13. Nxd4 cxd4 14. d3 Bg4 15. f3 Bd7 16. Nd2 Nd5 17. Nc4 Qc5 18. Qd2 b5 19. Na5 Ne3 20. Rfe1 Qxc2 21. Red1 Nxd1 22. Qxc2 Re1+ {Humbert,P (1525)-Dard,M ICCF 2013 0-1 (33)}) 11... Bg4 12. Nbd2 Rad8 13. Nb3 Qb5 14. Rb1 c4 15. Nbd4 Qa6 16. Nxc6 bxc6 17. Re1 h6 {Coope,D (1921)-Pope,P (1519) ICCF 2017 1-0 (65)}) 6... O-O (6... c5 7. Bb5+ Nc6 8. O-O O-O 9. Bf4 Nh5 10. Bg5 f6 11. Bh4 g5 12. Ne1 Ng7 13. Bg3 Ne7 14. Be2 Be6 15. c3 Nef5 16. d4 c4 17. Nc2 Rc8 18. Nb4 {Vornanen,A (2342)-Satosuo,R (2024) ICCF 2006 1/2 (69)}) 7. Bd3 c5 (7... Re8 8. h3 (8. O-O c5 9. Bb5 Nc6 10. Bxc6 bxc6 11. h3 Ba6 12. d3 c4 13. Bc3 Bc7 14. Re1 Qd6 15. Ra2 Re6 16. Rb2 Rae8 17. a4 {Stapinski,R (1935)-Tripp, G (1828) ICCF 2013 0-1 (56)}) 8... c5 9. c4 Nc6 10. Bc3 d4 11. Bxa5 Qxa5 12. O-O Bd7 13. Qb3 Rad8 14. Qb5 Qc7 15. Qxc5 dxe3 16. dxe3 Bxh3 17. Rd1 Ne4 { Pavlícek,M (2049)-Karasová,E (2010) ICCF 2008 0-1 (30)}) 8. Nc3 Nbd7 9. Bf4 a6 10. O-O Bc7 11. Bg5 Ne5 12. Bxf6 gxf6 13. Nxe5 fxe5 14. e4 c4 15. Be2 Be6 16. exd5 Bxd5 {Coope,D (1854)-McGirr,J (1850) ICCF 2017 1-0}) (5. Bb2 O-O 6. Nc3 d5 7. d4 Ne4 8. Qd3 Qf6 9. Qe3 Qc6 10. O-O-O Bxc3 11. f3 Bxb2+ 12. Kxb2 Nd6 13. Ra1 Nc4+ 14. Kb1 Nxe3 15. Ra2 Bf5 {0-1 (15) Omar,G (1767)-Parkes,R (2038) ICCF 2007}) 5... Nc6 (5... d5 6. Bb2 c5 7. Bc3 Nc6 8. Bb5 Bc7 9. Bxc6+ bxc6 10. Ne2 O-O 11. h3 Re8 12. O-O d4 13. exd4 Nh5 14. dxc5 Qh4 15. Ng3 Nxg3 16. fxg3 Qxg3 17. Qf3 {Odermatt,C (1688)-Schmid,P (2331) ICCF 2016 0-1}) (5... d6 6. Bxf6 Qxf6 7. c3 Bd7 8. Nf3 O-O 9. Qb3 Bc6 10. Be2 Bb6 11. O-O Qe6 12. Bc4 d5 13. Bd3 Nd7 14. Ng5 Qe7 15. Nxh7 Rfe8 16. Re1 g6 17. c4 {Martínez Muñoz,J-González Solé,F (1726) ICCF 2012 0-1 (35)}) 6. Bb2 (6. Bc3 Bxc3 7. Nxc3 d5 8. d4 Bf5 9. Bd3 Qd7 10. Nge2 O-O 11. Nf4 Ne7 12. O-O a6 13. Bxf5 Qxf5 14. Rb1 b5 15. a4 c6 16. Qc1 Ng6 17. Nd3 Rfe8 {Bray,P-Ricketts,M ICCF 2017 1/2 (26)}) 6... O-O 7. Be2 d5 8. Nf3 Qd6 (8... Ne4 9. O-O Bf5 10. d3 Nc5 11. Bc3 Bb6 12. Re1 Qd6 13. Qd2 Qh6 14. a4 a5 15. Bb2 Rad8 16. Nc3 d4 17. Nd1 Ne6 18. e4 Qxd2 {Moeckel,J (1845)-Ciesielski,S (2256) ICCF 2010 0-1 (37)}) 9. O-O a6 (9... Re8 10. c4 dxc4 11. Bxc4 Be6 12. Bxe6 Rxe6 13. Qc2 Ne4 14. d3 Nc5 15. Rd1 Qd5 16. Nc3 Bxc3 17. Qxc3 {Jacewicz,G (2276)-Rivas Terán,R ICCF 2014 1-0 (30)}) 10. d3 b5 11. c4 bxc4 12. dxc4 Rb8 13. Qc1 Bf5 14. Rd1 Rfd8 15. Nc3 Ne7 16. Nxd5 {Walczak,A (2369)-Kukula,P (2063) ICCF 2006 1/2 (44)}) 5. Nf3 (5. e3 O-O (5... Nc6 6. Bb2 d5 7. d4 O-O 8. Nf3 Bf5 (8... a6 9. Bd3 {1-0 (9) Edney,D (1991)-den Drijver,D (2052) ICCF 2017}) (8... Na5 9. Nbd2 b5 10. Bc3 Nc4 11. Nxc4 bxc4 12. Be2 a5 13. O-O Ne4 14. Qe1 c6 15. Bb2 Bd6 16. a4 Rb8 17. Ba3 Bb4 18. Bxb4 axb4 19. Nd2 Nc3 20. Nb1 {Jamieson,I-Mackintosh,I (2450) ICCF 2007 0-1 (28)}) 9. Bd3 Ne4 10. Nfd2 Qd6 11. Bxe4 dxe4 12. Nc3 Rad8 13. Ncxe4 Qg6 14. Qf3 Rfe8 15. h3 Bf8 16. d5 Ne5 17. Qg3 {Martínez Muñoz,J (1700)-Paul,J ICCF 2013 0-1 (35)}) (5... d5 6. Bxf6 (6. Nf3 c5 7. c4 Nc6 8. cxd5 Nxe5 9. Nxe5 O-O 10. Bc4 Qd6 11. f4 Nxd5 12. Nc3 Nxc3 13. dxc3 Be6 14. Qxd6 Bxd6 15. Bxe6 Bxe5 16. fxe5 fxe6 17. Rf1 { 1/2 (17) Fagerbekk,E (2189)-Kirkov,T (2232) ICCF 2013}) 6... Bxf6 7. Ra2 c5 8. Nf3 O-O 9. c4 Be6 10. Qb3 Nc6 11. cxd5 Bxd5 12. Bc4 Na5 13. Bxd5 Nxb3 14. Bxb3 Qd3 15. Bc2 Qc4 {0-1 (15) Odermatt,C-Díaz Castañet,J (2139) ICCF 2013}) 6. Nf3 (6. Bc4 d5 7. Ba2 Bg4 8. Ne2 Nbd7 9. Bb2 c6 10. O-O Qb6 11. Bb3 Nc5 12. Bd4 Qc7 13. d3 Nxb3 14. cxb3 c5 15. Bb2 Rfe8 16. h3 Bf5 17. Nbc3 Rac8 {León Ayllon, F-Diaz Vichi,F ICCF 2005 0-1 (29)}) 6... d5 (6... c5 7. c4 Nc6 8. Bb2 d5 9. d4 (9. cxd5 Nxd5 10. Qc2 Bf6 (10... a6 11. Nc3 b5 12. Be2 Be6 13. O-O Nxc3 14. Qxc3 Bf6 15. Qxc5 Bxb2 16. Rab1 Qf6 17. Qxc6 Bxa3 18. Nd4 Rfc8 19. Qb7 g6 20. h3 Rd8 21. Qb6 Be7 22. Nxe6 {Muri,H (2410)-Sukhov,N (2442) ICCF 2008 1/2 (28)}) 11. Bc4 (11. Nc3 Nxc3 12. dxc3 Be6 13. Be2 Qb6 14. Nd2 Na5 15. Rd1 Rad8 16. O-O c4 17. a4 Be7 18. Nf3 Bd5 19. Rd2 Bxf3 20. Rxd8 Rxd8 21. Bxf3 Qb3 22. Rc1 g6 { Jiménez Ariza,J (2398)-Moreno Carretero,C (2382) ICCF 2017 1/2 (30)}) (11. Be2 Nd4 12. Nxd4 cxd4 13. O-O Bd7 14. Bxd4 Bxd4 15. exd4 Nf4 16. Bf3 Bc6 17. Bxc6 Ne2+ {Skerlík,S (2241)-Garau,B (2362) ICCF 2017 1/2 (32)}) 11... Be6 (11... Bg4 12. Nc3 Nxc3 13. Bxc3 Rc8 14. O-O Bxc3 15. dxc3 Bxf3 16. gxf3 Qh4 17. Be2 Rce8 18. f4 g5 19. fxg5 Qxg5+ 20. Kh1 Qd5+ 21. f3 Rxe3 22. Rad1 Qe5 23. Bd3 { Ringsborg,A (2273)-Sardella,A (2276) ICCF 2020 1/2 (31)}) 12. Be2 Nd4 13. exd4 Nf4 14. dxc5 Re8 15. Nc3 Bg4 16. h4 Nxg2+ 17. Kf1 Nf4 18. Ng1 Nxe2 19. Ngxe2 Bxe2+ 20. Nxe2 Bxb2 {Ilzig,G (2128)-Köstner,W (2262) ICCF 2017 1/2 (44)}) 9... Qb6 10. Qc2 Bf5 11. Bd3 Bxd3 12. Qxd3 Qxb2 {0-1 (12) Odermatt,C (1688)-Klaus,E (2163) ICCF 2016}) 7. c4 (7. d4 c5 8. c4 Nc6 9. Nc3 cxd4 10. exd4 Qa5 11. Qb3 Ne4 12. Rc1 Qxa3 13. Qxa3 Bxa3 14. Nxe4 dxe4 15. Rc3 Bb4 16. d5 Nxe5 17. Nxe5 Bxc3+ 18. Ke2 Bxe5 {Martínez Muñoz,J-Ruiz Romero,Z (2318) ICCF 2012 0-1}) (7. Nc3 c5 8. Bd3 a6 9. Bg3 b5 10. Ne5 Bb7 11. O-O Ne4 12. Qg4 f5 13. Qh5 Nd7 14. Bxe4 dxe4 15. Rfd1 Bf6 16. Qxf5 Bxe5 17. Qe6+ Kh8 18. Bxe5 Re8 {Coope,D (1870) -Pérez Fernández,J (2403) ICCF 2017 0-1 (58)}) (7. Be2 c5 8. O-O Nc6 9. Bb2 Re8 10. d4 (10. d3 d4 11. Nbd2 dxe3 12. fxe3 Ng4 13. Nc4 b5 14. Nfe5 Ncxe5 15. Bxe5 h5 16. h3 Bg5 17. Bf4 Bxf4 18. Rxf4 Nf6 {Walczak,A (2369)-Oleksy,J (2261) ICCF 2006 0-1 (30)}) (10. Re1 Bf5 11. d3 b5 12. c4 bxc4 13. dxc4 Rb8 14. Bc3 Bd6 15. Bd3 Bg4 16. h3 Bh5 17. g4 dxc4 18. Bc2 Bg6 19. Bxg6 hxg6 20. Nbd2 Qe7 21. Nxc4 Ne4 {Böhnke,H (2164)-Larsen,S (2351) ICCF 2005 1/2 (32)}) 10... c4 11. Ne5 Bd6 12. f4 Ne7 13. Nc3 Nf5 14. Qd2 Bc7 15. g4 Nd6 16. Bf3 Ba5 17. Qg2 Bxc3 18. Bxc3 Nfe4 {Walczak,A (2369)-Szulc,S (2266) ICCF 2006 1-0 (56)}) (7. Bxf6 Bxf6 8. d4 c5 9. c3 Nc6 10. Be2 Bf5 11. O-O c4 12. Nbd2 Re8 13. h3 Qd6 14. Re1 Rac8 15. Nh2 Rb8 16. Bg4 Bd3 17. Be2 Bg6 18. Bh5 Bd3 {Odermatt,C (1694)-Lonnee,G (1773) ICCF 2014 0-1 (30)}) 7... Nbd7 (7... Bg4 8. cxd5 Nxd5 9. Be2 c5 10. O-O Nc6 11. Bb2 Qd7 12. Nc3 Nf6 13. h3 Bf5 14. Rc1 Rad8 15. Re1 Bd3 16. Qb3 b6 17. Bxd3 Qxd3 18. Qa4 Na5 19. Rb1 {Fagerbekk,E (2189)-Calvo,R (2200) ICCF 2013 1/2 (32)} ) (7... dxc4 8. Bxc4 c5 9. O-O Nc6 10. Bb2 Bf5 11. h3 Bd3 12. Bxd3 Qxd3 13. Nc3 Rfd8 14. Bc1 b5 15. Qe2 a6 16. Qxd3 Rxd3 17. Bb2 Rad8 18. Rfd1 Na5 19. Rac1 { Bernardara,E (1290)-Bosetti,R (1811) ICCF 2020 0-1}) (7... c5 8. cxd5 Nxd5 9. Bb2 Bf5 10. Nc3 (10. Be2 Qb6 11. Qc1 Nc6 12. Nc3 Nf6 13. Nh4 Be6 14. O-O Na5 15. Rb1 Rfd8 16. Qc2 Bb3 17. Qc1 Be6 18. d3 c4 19. Rd1 Nb3 {Skerlík,S (2234) -Kulakiewicz,M (2301) ICCF 2019 1/2 (51)}) 10... Nc6 11. Be2 a6 12. O-O Rc8 13. d4 Bf6 14. Rc1 cxd4 15. Nxd5 Qxd5 16. exd4 Rfd8 17. Bc4 Qd7 18. h3 Nxd4 19. Nxd4 {Ilzig,G (2128)-Molzahn,N (2298) ICCF 2017 0-1 (53)}) 8. Bb2 Nc5 (8... dxc4 9. Bxc4 b5 10. Be2 a6 11. a4 b4 12. d4 Bb7 13. O-O Nd5 14. Nbd2 Rc8 15. e4 Nf4 16. Re1 c5 17. Bf1 cxd4 18. Nxd4 Nc5 19. Qg4 Bf6 20. e5 {Ilzig,G (2103) -Graham,O (2122) ICCF 2016 1/2 (79)}) 9. d4 Nce4 10. Nbd2 Nxd2 (10... Bf5 11. cxd5 (11. Be2 c6 12. Nxe4 Nxe4 13. O-O Bd6 14. Rc1 Re8 15. Ne5 Qg5 16. cxd5 cxd5 17. Bd3 Rad8 18. Qe2 {Fagerbekk,E (2215)-Stone,G (2260) ICCF 2013 1/2}) 11... Nxd2 12. Nxd2 Qxd5 13. f3 Qa5 14. Be2 Be6 15. e4 Nh5 16. g3 Nf4 17. O-O Nxe2+ 18. Qxe2 Rad8 19. Rac1 c6 20. f4 f6 21. Nc4 Qb5 22. Rfe1 {Ilzig, G-Razumikhin,A (2345) ICCF 2016 0-1 (60)}) 11. Qxd2 c6 12. Bd3 Be6 13. c5 Ne4 14. Qc2 Qa5+ 15. Nd2 f5 16. f3 Bh4+ {Stapinski,R (1846)-Ibragimov,V (2248) ICCF 2010 0-1 (43)}) (5. Nc3 Nc6 (5... d6 6. Bg3 Bd7 7. Rb1 Na6 8. Rxb7 Nc5 9. Rb1 O-O 10. Nf3 c6 11. e3 Qa5 12. Nd4 Qxa3 13. Be2 Nce4 14. Rb3 Qa5 15. Nxe4 Nxe4 16. Rb7 Nxg3 17. fxg3 {Walker,J (1771)-Huff,D (1872) ICCF 2016 1-0 (27)}) (5... O-O 6. Nf3 {0-1 (6) Pandel,B-Roth Jr.,P (1786) ICCF 2017}) 6. Bxf6 Bxf6 7. e3 O-O 8. d4 Re8 9. Bb5 Nxd4 10. Rc1 Nxb5 11. Nxb5 d5 12. Nf3 a6 13. Nbd4 c5 14. Nb3 Bg4 15. O-O Rc8 16. c4 dxc4 {Noth,A-Pala,G ICCF 2008 0-1}) (5. d3 Nc6 6. e3 Nxe5 7. Nf3 Nxf3+ 8. Qxf3 O-O 9. Be2 d5 10. Nd2 c5 11. h3 Qa5 12. Bd1 Bd6 13. Qe2 Be5 14. d4 cxd4 15. O-O d3 16. Qxd3 Bxa1 {Bray,P-Wakeham,M (1911) ICCF 2017 0-1 (38)}) 5... d5 (5... c5 6. Nc3 (6. c4 Nc6 7. Bc3 O-O 8. e3 d5 9. d4 cxd4 10. Nxd4 Ne4 11. Qc2 Bh4 12. g3 Bf6 13. Nd2 Nxc3 14. Qxc3 Nxd4 15. exd4 Re8+ 16. Be2 dxc4 17. Nf3 Qd5 {Odermatt,C (1672)-Klowski,B ICCF 2014 0-1}) 6... O-O 7. Rb1 (7. e4 d5 8. exd5 Nxd5 9. Bd3 Nc6 10. O-O Nxe5 11. Nxe5 Nxc3 12. dxc3 Qc7 13. Re1 Bf6 14. f4 c4 15. Be4 Rb8 16. Rb1 b5 17. Qd5 Bb7 18. Qd4 Bxe4 {Coope,D (1870)-Schaub,M (2278) ICCF 2017 0-1 (63)}) (7. g3 d5 8. Bg2 Nc6 9. Rb1 Ng4 10. Bf4 d4 11. h3 Nf6 12. Na4 Nd5 13. e3 g5 14. Nxg5 Bxg5 15. Qh5 Bxf4 16. gxf4 Nf6 17. Qh4 c4 18. Nc5 Kh8 {Coope,D (1870)-Gnilka,T (2291) ICCF 2017 0-1 (47)}) 7... d5 8. g3 Ne4 9. d3 Nxc3 10. Bxc3 Re8 11. Bg2 Nc6 12. O-O b6 13. Re1 Bg4 14. h3 Be6 15. Ne5 Nxe5 16. Bxe5 Rc8 17. e3 {Coope,D (1921)-Alascio López,J ICCF 2017 0-1 (71)}) (5... O-O 6. g3 b5 7. Bg2 Bb7 8. Nc3 a6 9. O-O d5 10. Nd4 Nbd7 11. Bf4 Re8 12. Nf5 Bf8 13. d3 Rc8 14. Qd2 Nc5 15. Nd4 h6 16. Rfb1 g5 17. Be3 {Coope,D (1870)-Morales,O (2165) ICCF 2017 0-1 (43)}) (5... d6 6. Bxf6 Bxf6 7. d4 c5 8. e3 cxd4 9. Nxd4 Nc6 10. c3 Qa5 11. Bd3 Nxd4 12. exd4 Bxd4 13. Qe2+ Be6 14. O-O Bf6 15. Qb2 Rb8 16. Bb5+ Kf8 17. Rc1 {Moeckel,J (1661) -Williamson,D (1947) ICCF 2014 0-1 (47)}) 6. Bb2 c5 7. g3 O-O (7... Nc6 8. Bg2 Be6 9. O-O O-O 10. d3 Re8 11. Nbd2 d4 12. c3 dxc3 13. Bxc3 Nd5 14. Bb2 Rc8 15. Rc1 b5 16. Ne4 Na5 17. Qc2 a6 18. Rfd1 h6 19. Ba1 {Coope,D (1921)-Cvak,R (2292) ICCF 2017 0-1 (60)}) 8. d3 Nc6 (8... Qb6 9. Qc1 Qa5+ 10. Bc3 Qc7 11. Bg2 Nc6 12. O-O Bf5 13. a4 Rad8 14. Bb2 Rfe8 15. Re1 h6 16. Nbd2 b6 17. e4 dxe4 18. Nxe4 Nxe4 19. dxe4 Bg4 20. Qe3 {Coope,D (1921)-Vahvaselkä,J (2006) ICCF 2017 0-1 (62)}) 9. Nbd2 Qc7 (9... Bg4 10. Bg2 Qd7 11. O-O Rfe8 12. Re1 Rad8 13. Rb1 b6 14. Qc1 Bh3 15. Ba1 Bxg2 16. Kxg2 Nh5 17. Qb2 Bf6 18. Qb5 Bxa1 19. Rxa1 Ne5 20. Qxd7 Rxd7 21. Nxe5 {Coope,D (1921)-Woodhouse,S (1646) ICCF 2017 1-0 (33)}) (9... h6 10. Bg2 Qc7 11. Rb1 Re8 12. O-O Bd6 13. Bxf6 gxf6 14. e4 dxe4 15. Nxe4 Be7 16. Qd2 Kg7 17. Rfe1 Be6 18. Qc3 b6 19. d4 Red8 20. dxc5 {1-0 (20) Coope,D (1870)-Fister,B (2141) ICCF 2017}) 10. Bg2 Be6 11. O-O Rad8 12. Re1 h6 13. Rb1 a6 14. Nh4 b5 15. Nb3 Qb6 {Coope,D (1921)-Szopa,J (1933) ICCF 2017 0-1 (63)}) ( 4. g3 O-O (4... Nc6 5. Bb2 d5 6. Bg2 O-O 7. Nf3 Bg4 8. O-O Qe7 9. d3 Rfe8 10. e3 Ne5 11. Bxe5 Bxf3 12. Bxf3 Qxe5 13. d4 Qf5 14. c4 c5 15. a3 Ba5 16. cxd5 { Haznedaroglu,K (2293)-Bjazevic,P (2245) ICCF 2008 0-1}) 5. Bg2 (5. Nf3 d5 (5... Nc6 6. Bf4 d5 7. Bg2 Re8 8. O-O Bf5 9. Nc3 Bxc3 10. dxc3 Ne4 11. Qd3 Nxg3 { 0-1 (11) Hanamitsu,I (1811)-Bjazevic,P ICCF 2006}) 6. Bb2 c5 7. Bxf6 Qxf6 8. c3 Nc6 9. Bg2 Re8 10. Qb3 Rxe2+ 11. Kxe2 Bh3 12. Bxh3 Re8+ 13. Kd1 Qxf3+ 14. Kc2 Qxh1 15. Bd7 Qe4+ 16. Kb2 Ne5 {Brião,P (1863)-Carrillo Pujol,J ICCF 2019 0-1 (25)}) 5... Re8 6. Nf3 d5 (6... Nc6 7. Bb2 Qe7 8. e3 d5 9. a3 Ba5 10. O-O Bg4 11. h3 Be6 12. Nc3 Rad8 13. Ne2 Ne4 14. d3 Ng5 15. Nxg5 Qxg5 16. Nf4 Bb6 17. Rb1 {Fels,B (2205)-Cottarelli,F (1883) ICCF 2014 1-0}) 7. O-O Bg4 8. Bb2 c5 9. d3 Nc6 10. a3 Bf5 11. axb4 Nxb4 12. Qd2 a5 13. Na3 Ra6 14. Rab1 Re7 15. Rfe1 h6 {Rosén,L (2358)-Moroz,P ICCF 2010 1-0 (31)}) (4. Bb2 d5 (4... O-O 5. c3 Be7 6. d4 d5 7. Nf3 Ne4 8. Qd2 Nxd2 9. Nbxd2 Bf5 10. O-O-O Qe8 11. e3 Qa4 12. a3 Qc2# {0-1 (12) Kissick,P (1548)-Winges,M (1999) ICCF 2006}) 5. e3 (5. Nf3 O-O 6. e3 c5 7. Be2 Nc6 8. O-O Re8 (8... Ba5 9. d3 (9. c4 d4 10. exd4 cxd4 11. d3 Re8 12. Nbd2 Bc3 13. Bxc3 dxc3 14. Nb3 a5 15. Rc1 a4 16. Na1 Nh5 17. g3 Qe7 18. Re1 Bg4 19. Nc2 Nf6 20. Nfd4 Nxd4 {Balañá Romero,R (1855)-Huff,D (1854) ICCF 2016 1-0 (59)}) 9... d4 10. e4 (10. Nfd2 Bc7 11. e4 a6 12. f4 b5 13. a4 Be6 14. axb5 axb5 15. Rxa8 Qxa8 16. Na3 Qa6 17. g4 Nd7 18. f5 Ba2 19. g5 Ra8 20. Bg4 c4 21. Nf3 Nde5 {Wilshusen,H (1359)-Krüger,H (2294) ICCF 2019 0-1 (31)}) 10... Bc7 ( 10... Be6 11. Nbd2 Qe7 (11... b5 12. Ng5 Bd7 {1/2 (12) Skerlík,S (2240) -Campbell,E (2164) ICCF 2017}) (11... Nd7 12. Nb3 Bc7 13. c3 dxc3 14. Bxc3 Qe7 15. d4 Bxb3 16. axb3 Nf6 17. Bc4 cxd4 18. Nxd4 Nxe4 19. Nxc6 bxc6 20. Bb2 Qg5 21. Qd7 Bb6 22. Ba3 Rad8 23. Qxc6 {Fagerbekk,E (2215)-David-Bordier,C (2203) ICCF 2013 1-0}) 12. Ba3 (12. Nb3 Bc7 13. c3 dxc3 14. Bxc3 Rad8 15. Qc2 Bg4 16. Nbd2 Rfe8 17. Rfd1 Be5 18. Bxe5 Nxe5 19. h3 Bxf3 20. Nxf3 Nc6 21. Rac1 b6 22. Qb2 Rd6 23. Rd2 {Skerlík,S (2300)-Novikov,S (2182) ICCF 2012 1/2 (26)}) 12... Bc3 13. Rb1 Bxa2 14. Rb5 b6 15. Nb1 Bb4 16. Bxb4 Nxb4 17. c4 dxc3 18. Nxc3 Be6 {0-1 (18) Cottarelli,F (1883)-Fels,B (2205) ICCF 2014}) (10... Qe7 11. Nfd2 Be6 12. f4 b5 13. a4 a6 14. Rf2 Bb6 15. Bf3 c4 16. f5 Bd7 17. Ba3 Bc5 18. Bxc5 Qxc5 19. dxc4 bxc4 20. Na3 Ne5 21. Kh1 Rab8 22. Qg1 {Zhuravlev,K (2179)-Neale,M (2031) ICCF 2015 0-1}) 11. Nbd2 Be6 12. Ng5 Bd7 13. Ngf3 Qe7 14. c3 dxc3 15. Bxc3 b6 16. Qc2 Rfe8 17. Qb2 b5 18. Bxf6 gxf6 19. Rac1 Bd6 20. d4 {Szabo,A (2304)-Calugaru,V (2329) ICCF 2005 0-1 (62)}) (8... Bf5 9. d3 Re8 10. a3 Ba5 11. Nbd2 Qe7 12. Nb3 Bb6 13. Re1 Qd6 14. Qd2 Bc7 15. Rab1 Rad8 16. h3 Nd7 17. Qc3 f6 18. a4 b6 19. Nbd2 Nde5 20. Nxe5 {Walker,J (1943)-Sueess,F ICCF 2007 0-1 (46)}) (8... a6 9. c4 dxc4 10. Bxc4 b5 11. Be2 Bf5 12. Nc3 c4 13. Ne1 Qc7 14. h3 h6 15. a3 Bd6 16. d4 Na5 17. Bf3 Rad8 18. e4 Bg6 19. Qe2 Nb3 20. Rd1 { Wilshusen,H (1317)-Carnemolla,G (1926) ICCF 2019 0-1 (39)}) (8... Be6 9. c3 (9. d3 Re8 10. c3 Ba5 11. Nbd2 Bg4 12. h3 Bh5 13. Rb1 Qe7 14. c4 d4 15. e4 Rad8 16. Bc1 Nb4 17. Qb3 b6 18. a3 Nc6 19. Qd1 h6 20. Nh2 Bg6 {Mehlhorn,U (2353) -Lyashenko,S (1965) ICCF 2017 1/2 (56)}) 9... Ba5 10. d3 Qd6 11. Nbd2 Bc7 12. c4 d4 13. exd4 Nxd4 14. Bxd4 cxd4 15. Nb3 Bb6 16. a4 a6 17. Qc1 Rfe8 18. Re1 Rac8 19. Qa3 Qxa3 20. Rxa3 {Skerlík,S (2300)-Pietrobono,A (2198) ICCF 2012 1-0 (54)}) 9. d3 (9. a3 Ba5 10. d3 (10. c4 d4 11. Qb3 Bc7 12. Re1 Bg4 13. d3 dxe3 14. fxe3 Rxe3 15. Nbd2 Bxf3 16. Nxf3 Qd6 17. Bxf6 gxf6 18. Bf1 Rxf3 {0-1 (18) Wilshusen,H (1799)-Roubaud,D (2167) ICCF 2010}) (10. d4 c4 11. Bc3 Bc7 12. Be1 Qd6 13. Nc3 a6 14. Kh1 b5 15. Rg1 Bg4 16. g3 Qe7 17. Bf1 Qd7 18. Bg2 Rad8 19. Qc1 Qe6 20. Ne2 Ne4 21. Rf1 Bh3 {Haznedaroglu,K (2293)-Vegjeleki,A (2145) ICCF 2008 0-1 (33)}) 10... d4 11. e4 c4 12. Bc1 (12. dxc4 Nxe4 13. Nxd4 Qg5 14. Nf3 Qg6 15. Nh4 Qh6 16. Nf3 Bg4 17. Qd3 Rad8 18. Qe3 Ng3 19. Qxh6 Nxe2+ 20. Kh1 gxh6 21. h3 Bxf3 22. gxf3 Ne5 23. Kg2 Nxc4 {Zanin,A-Setyo Adi,N ICCF 2019 0-1 (30)}) 12... c3 13. Bg5 (13. a4 Bc7 14. Bg5 Be6 15. Na3 h6 16. Bh4 a6 17. Ne1 Bf4 18. Bg3 Bxg3 19. hxg3 Qb6 20. f4 Nxe4 {Silfver,T (1732)-Guðmundsson,Ó ICCF 2015 0-1 (64)}) 13... b5 14. Re1 Bc7 15. Bh4 a5 16. Bg3 Bxg3 17. hxg3 Rb8 18. Nh4 b4 19. f4 Qe7 20. Nf3 Ng4 {Rouse,L-Atkins,A (1446) ICCF 2020 0-1 (26)}) (9. c3 Ba5 10. d4 c4 11. Nbd2 Bg4 12. a4 a6 13. Ng5 Bf5 14. Re1 b5 15. axb5 axb5 16. Qc1 b4 17. h3 Bg6 18. Bf1 b3 19. g3 Qd7 20. Bg2 h6 {Godoy,M-Mlynarcík,S (2002) ICCF 2005 0-1 (37)}) (9. c4 d4 10. exd4 cxd4 11. Qb3 Rxe2 12. Nxd4 Nxd4 13. Qd3 Re4 14. a3 Ne2+ {0-1 (14) Neumann,F (1516)-Salzmann,S (2358) ICCF 2020} ) (9. h3 Ba5 10. d3 d4 11. e4 b5 12. a4 b4 13. Nbd2 Bc7 14. Nb3 Qe7 15. Bc1 c4 16. Nbd2 c3 17. Nb3 Qd6 18. Bg5 h6 19. Bxf6 Qxf6 20. Re1 Be6 {Diener,R (1946) -Vasseur,O (1990) ICCF 2017 0-1 (31)}) 9... Ba5 (9... Qe7 10. c3 (10. Nbd2 d4 11. e4 Bd7 (11... Be6 12. Ng5 (12. a3 Ba5 13. Nb3 Bc7 14. Re1 (14. Ng5 Bd7 15. f4 h6 16. Nh3 c4 17. dxc4 Qxe4 18. Bf3 Qg6 19. Kh1 Ng4 20. Bxd4 Nxd4 21. Qxd4 Rad8 22. Qc3 Ne3 23. Rg1 Nxc2 {Wilshusen,H (1393)-Rawlings,A (2361) ICCF 2019 0-1 (30)}) (14. c4 dxc3 15. Bxc3 Rad8 16. Qc2 b6 17. Nbd2 Ng4 18. Qb2 Bc8 19. Rad1 Ba6 20. Qc2 Nge5 21. Nxe5 Bxe5 22. Bxe5 Nxe5 23. Nb3 Nc6 24. f4 Bb5 25. Qb2 Ba4 {Bonetti,S-Taulien,H ICCF 2007 1/2 (66)}) 14... b6 15. Nbd2 Rad8 16. g3 Nd7 17. Nh4 a6 18. Ng2 b5 19. Nf4 Bxf4 20. gxf4 Nb6 21. f5 Bd7 22. Nf3 Na4 23. Bc1 Nc3 {Kirk,T-Andersson,S (1887) ICCF 2018 0-1 (37)}) (12. Nb3 Rad8 (12... Nd7 13. a3 Bc3 14. Qc1 b5 15. Nfd2 a5 16. a4 bxa4 17. Rxa4 Nb6 18. Ra3 a4 19. Nxc5 Qxc5 20. Bxc3 dxc3 21. Nb1 Nd4 22. Bd1 Nb5 23. Ra1 a3 24. Nxa3 {Wilshusen, H (1393)-Merkuriev,V (2286) ICCF 2019 0-1 (25)}) 13. a3 (13. Nfd2 Bc3 14. Bxc3 dxc3 15. Nb1 c4 16. Nc1 Nxe4 17. Qe1 Ng5 18. Qxc3 Nd4 19. Nd2 b5 20. a3 Bh3 21. Bd1 Qb7 22. f3 Qb6 23. Kh1 Nf5 24. Ne4 Bxg2+ {Wilshusen,H (1393)-Percze,J (2508) ICCF 2019 0-1 (30)}) 13... Bc3 14. Bxc3 dxc3 15. Nc1 Nxe4 16. Qe1 Ng5 17. Qxc3 Bd5 18. Nxg5 Qxg5 19. f3 Nd4 20. Bd1 Rd6 21. Qd2 {Wilshusen,H (1393) -Macs,O (1993) ICCF 2019 0-1}) 12... Bd7 13. a3 Ba5 14. Rb1 b5 15. Nb3 Bc7 16. Bh5 Nxh5 17. Qxh5 h6 18. Nf3 Bd6 19. Rfe1 Be6 20. Nbd2 Rab8 21. Bc1 c4 22. Ra1 Qd7 23. h3 {Cottarelli,F (1894)-Lloyd,G (2257) ICCF 2010 0-1 (38)}) 12. a3 Ba5 13. Nc4 Bc7 14. c3 Be6 15. Ncd2 dxc3 16. Bxc3 Rad8 17. Qc2 b6 18. Qb2 Bc8 19. Rfd1 Ba6 20. Nf1 Ng4 21. h3 Nge5 {Frydendal,O (1899)-Collobiano,A (2044) ICCF 2010 0-1 (28)}) (10. c4 d4 11. e4 Ba5 12. Nfd2 g5 13. Bc1 Bc7 14. Nb3 Nd7 15. f4 f5 16. Bh5 Rf8 17. exf5 gxf4 18. N1d2 Kh8 19. Bf3 Nde5 20. Bxc6 Nxc6 21. f6 Rxf6 {Malmström,J (1931)-McKenzie,C (2377) ICCF 2018 0-1 (28)}) 10... Ba5 11. Nbd2 (11. Ba3 Bc7 (11... Rb8 12. Qc1 Bc7 13. Nbd2 b6 14. d4 Qe6 15. dxc5 bxc5 16. Bxc5 Ne4 17. Bd4 Qh6 18. Rd1 Bg4 19. Nf1 Ne5 20. Ng3 Bxf3 21. Bxe5 Bxe5 22. Bxf3 Nxc3 {Nicklich,W (2242)-Querci,A (2216) ICCF 2011 0-1 (53)}) 12. Nbd2 b6 13. d4 Ne4 14. Rc1 Qd6 15. g3 Bh3 16. Re1 Rad8 17. Nxe4 dxe4 18. Nh4 Qh6 19. Bg4 Bxg4 20. Qxg4 Qe6 21. Qxe6 fxe6 22. Red1 Rd7 {Wolf,W (2303)-Wurtinger,R (2292) ICCF 2016 1/2 (46)}) 11... a6 (11... Bf5 12. Rc1 (12. Re1 Rad8 13. Rc1 Bc7 14. g3 b6 15. Qb3 Na5 16. Qa3 Bd6 17. c4 dxc4 18. dxc4 Nc6 19. e4 Bg4 20. Bd1 Be5 21. Ba4 Bxb2 22. Qxb2 Qc7 23. Nh4 Rd3 {Braakhuis,W (2346)-Kopsa,P ICCF 2007 0-1 (54)}) (12. c4 d4 13. e4 Bc7 (13... h6 14. Nb3 Bc7 15. Nfd2 g5 16. Bc1 b6 17. Re1 Be6 18. Nf1 a6 19. a4 Bd6 20. Bd2 Qc7 21. Ng3 {1-0 (21) Bonetti, S-Gómez Celdrán,F (2263) ICCF 2007}) 14. Re1 Bd7 15. Rb1 a6 16. Ba3 b5 17. Qc2 b4 18. Bb2 {1-0 (18) Flewelling,H (1754)-Ooka,K (1747) ICCF 2017}) (12. a4 Bc7 13. h3 Rad8 14. Ba3 Ne4 15. Rc1 Nxd2 16. Qxd2 b6 17. d4 Be4 18. Rfd1 Rd6 19. Kf1 Rf6 20. Qb2 Na5 21. dxc5 bxc5 22. Qb5 Rc6 23. Nd4 {Walker,J (1761) -Guerrero Morales,C ICCF 2015 0-1 (34)}) 12... Bc7 13. Ba3 Ng4 14. d4 Qe6 15. Bxc5 Qh6 16. g3 Qh3 17. Re1 Rxe3 18. Bf1 Rxe1 19. Qxe1 Qh6 20. Qe2 Nf6 21. Re1 a6 22. Qd1 Bg4 23. Qc2 {Ringsborg,A (2383)-Hjorth,J (2119) ICCF 2014 1-0 (47)}) (11... Bg4 12. c4 (12. Qc2 Rac8 13. Rab1 Bc7 14. Rfe1 b6 15. a3 Qd6 16. Qa4 Bd7 17. Qb3 Ng4 18. h3 Nge5 19. c4 d4 20. exd4 cxd4 21. Bf1 Rcd8 22. Rbd1 Bc8 23. g3 Qh6 {León Ayllon,F-Martín Molinero,R (2391) ICCF 2005 0-1 (31)}) (12. h3 Bf5 13. Re1 Rad8 14. Qa4 b5 15. Qxb5 Rb8 16. Qxc6 Rxb2 17. Reb1 Bxc3 18. Rxb2 Bxb2 19. Rb1 Rb8 20. Nb3 {1/2 (20) Skerlík,S (2315)-Rak,P (2350) ICCF 2012}) 12... d4 13. e4 Bd7 14. Ne1 (14. Nb3 Bc7 15. Ne1 b6 16. Bc1 Ne5 17. f4 Nxc4 18. dxc4 Nxe4 19. Bd3 g6 20. Qc2 Nc3 21. Bd2 Ne2+ 22. Bxe2 Qxe2 23. Nc1 Qg4 24. a4 a5 25. h3 Qf5 {Skerlík,S (2315)-Samerdokas,A (2344) ICCF 2012 1/2 (28)}) 14... Bc7 (14... a6 15. a4 Rab8 16. Nb3 Bc3 17. Bxc3 dxc3 18. Qc1 Nd4 19. Nxd4 cxd4 20. Nc2 Qc5 21. Qa3 Qxa3 22. Rxa3 Rbd8 23. Nxd4 Nxe4 24. dxe4 Rxe4 25. Bf3 Rxd4 26. Rxc3 {Skerlík,S (2315)-Roques,P (2300) ICCF 2012 1/2 (28)}) 15. f4 a6 16. Rf2 Kh8 17. a4 Na5 18. Bc1 Bc6 19. g3 Rab8 20. Ng2 b6 21. e5 Ng8 {Bonetti, S-Wojtkowiak,R (2390) ICCF 2007 1/2 (48)}) (11... b5 12. a4 b4 13. Nb3 Bc7 14. Re1 Be6 15. cxb4 Nxb4 16. Bxf6 gxf6 17. Bf1 Rab8 18. Rc1 Bd6 19. Nbd2 Bg4 20. e4 d4 21. h3 Bh5 22. Rb1 Na2 23. Rxb8 {Skerlík,S (2279)-Conde Poderoso,A (2157) ICCF 2015 0-1 (78)}) (11... Bc7 12. Re1 Bf5 13. Qb3 Na5 14. Qd1 Rad8 15. Ba3 b6 16. Qa4 Qe6 17. Rad1 a6 18. Bb2 b5 19. Qh4 Qc8 20. c4 dxc4 21. dxc4 Ne4 22. Nxe4 Rxe4 23. Qg5 {Hoch,H (2106)-Siegel,W ICCF 2008 1/2 (40)}) 12. d4 c4 13. a4 b5 14. axb5 axb5 15. Qb1 Bg4 16. Bd1 Reb8 17. Bc2 b4 {Heijnens,R (2291) -Barendswaard,W (2111) ICCF 2020 0-1 (36)}) (9... h6 10. Nbd2 (10. c3 Ba5 11. Nbd2 Qe7 12. Qc2 Bf5 13. Ba3 Bc7 14. Nd4 Bd7 15. Nxc6 Bxc6 16. d4 b6 17. Bf3 Rad8 18. Rfd1 Bd6 19. Rac1 c4 20. Bxd6 Qxd6 21. a4 g6 {Walker,J (1761)-Mujunen, M (2250) ICCF 2015 0-1 (68)}) (10. h3 Ba5 11. Nbd2 d4 12. Nb3 Bb6 13. e4 Be6 14. a4 Qd6 15. Nfd2 g5 16. c3 Bc7 17. f4 dxc3 18. Bxc3 Bxb3 19. Nxb3 Rad8 20. Nd2 c4 21. Bxf6 {Feldborg,B (2216)-Geiser,A (2121) ICCF 2012 1/2 (29)}) 10... d4 11. e4 Be6 (11... Qc7 12. a3 Bc3 13. Bxc3 dxc3 14. Nc4 Rd8 15. Qe1 b5 16. Ne3 b4 17. axb4 cxb4 18. Qb1 a5 19. Re1 Be6 20. h3 a4 21. e5 Nd7 22. d4 Nb6 23. Rd1 {Wilshusen,H (1527)-Martínez Muñoz,J (1508) ICCF 2017 0-1 (58)}) 12. a3 Bc3 13. Bxc3 dxc3 14. Nb1 Qa5 15. Qe1 Nd4 16. Bd1 Nb5 17. a4 Bd7 18. Be2 Nd4 19. Bd1 Nd5 20. Na3 Bxa4 21. Nc4 {Flewelling,H (1760)-Thys,H (1758) ICCF 2018 0-1 (31)}) (9... Bg4 10. c3 (10. Nbd2 d4 11. e4 b6 12. a3 Bxd2 13. Nxd2 Bxe2 14. Qxe2 a6 15. Rfb1 Ra7 16. Bc1 Nd5 17. Qh5 Nc3 18. Rb2 Rb7 19. Nf1 g6 20. Qf3 Ne5 21. Qh3 Ne2+ {Flewelling,H (1760)-Pardoe,I (1648) ICCF 2018 1/2 (28)}) (10. a3 Ba5 11. Nbd2 Qd6 (11... Qe7 12. Nb3 Bc7 13. Ne1 Bd7 14. Bxf6 Qxf6 15. Nxc5 Qd6 16. g3 Qxc5 17. d4 Qd6 18. c4 dxc4 19. Bxc4 Na5 20. Be2 Bh3 21. Ng2 {Wilshusen, H (1359)-Parushev,A (2315) ICCF 2019 0-1 (36)}) 12. Rb1 Bc7 13. h3 Bxf3 14. Nxf3 d4 15. e4 Nh5 16. Bc1 Rab8 17. Bd2 Nf4 18. Bxf4 Qxf4 19. g3 Qd6 20. Nh4 Ne7 21. Qd2 b5 {Stapinski,R (1993)-Velikanov,I ICCF 2006 0-1 (45)}) 10... Ba5 11. Nbd2 Qd6 12. h3 Bxf3 (12... Bh5 13. Re1 b5 14. a4 b4 15. c4 d4 16. exd4 Bxf3 17. Nxf3 cxd4 18. Nd2 Rad8 19. Bf3 Rxe1+ 20. Qxe1 Ne5 21. Be2 Re8 22. Qf1 h5 23. h4 {Skerlík,S (2279)-Steel,A (2024) ICCF 2015 1/2 (41)}) 13. Nxf3 Bc7 14. d4 c4 15. a4 Ne4 16. Qc2 Na5 17. Ba3 Qc6 18. Bb4 Nb3 19. Ra2 a5 20. Ba3 Qxa4 21. Bd6 {Flewelling,H (1760)-Jones,C (1910) ICCF 2018 0-1 (26)}) 10. Nbd2 (10. c3 Qd6 (10... b5 11. Nbd2 c4 12. a4 a6 13. axb5 axb5 14. Qc2 Bf5 15. Nh4 Bd7 16. Nhf3 h6 17. dxc4 bxc4 18. Ra2 Bc7 19. Rfa1 Rb8 20. Ba3 Rb5 21. Bd1 Qc8 22. Qc1 {Skerlík,S (2279)-Geier,T (2183) ICCF 2015 0-1 (58)}) (10... Bf5 11. Nbd2 Bc7 12. Re1 h6 13. Qb3 Na5 14. Qd1 Qd6 15. Ba3 b6 16. Nb3 Nb7 17. h3 Nh7 18. Nbd2 Ng5 19. Nf1 Qf6 20. Rc1 Rad8 21. Nxg5 Qxg5 22. Bg4 {Semenov,V (2250) -Quattrocchi,G (2335) ICCF 2010 0-1 (32)}) 11. Nbd2 Bc7 12. Re1 Bf5 (12... Bg4 13. g3 (13. h3 Bd7 (13... Bxf3 14. Nxf3 Ne5 15. g3 Rad8 16. c4 Nxc4 17. dxc4 Ne4 18. Ne5 Rxe5 19. Bxe5 Qxe5 20. Bf3 Nxf2 21. Kxf2 Qxg3+ 22. Ke2 dxc4 23. Qa4 Qh2+ {1/2 (23) Skerlík,S (2279)-Kolodziejski,M (2191) ICCF 2015}) 14. Qc2 Rad8 15. c4 d4 16. exd4 Nxd4 17. Bxd4 cxd4 18. Nb3 Nh5 19. Bf1 Nf4 20. h4 Ne6 21. g3 a5 {Skerlík,S (2279)-Iacomi,S (2106) ICCF 2015 1/2 (25)}) 13... Rad8 14. Qb3 Ba5 15. Qc2 Qd7 16. Rad1 b5 17. e4 a6 18. a4 bxa4 19. Qxa4 Rb8 20. Qc2 d4 21. Rc1 Rb5 22. cxd4 Bxf3 23. Bxf3 Reb8 24. Bc3 {Rudbeck,J (2407)-Nowak,I (2341) ICCF 2005 0-1 (42)}) 13. c4 dxc4 14. Nxc4 Qe7 15. Rc1 Rad8 16. Qb3 b6 17. a3 Nd5 18. g3 Nf6 19. d4 Ne4 20. d5 Rxd5 21. Nxb6 Rd6 {Rudbeck,J (2407)-Legemaat, G (2391) ICCF 2005 1/2 (38)}) 10... d4 (10... Qe7 11. c4 d4 12. e4 Bc7 13. Rb1 b6 14. g3 Rb8 15. Ne1 Qe6 16. f4 Qh3 17. Bf3 Ng4 18. Bxg4 Bxg4 19. Nef3 a6 20. a3 Qh5 21. Qc2 Re6 22. Rf2 {Frydendal,O (1788)-Brusiani,A (1897) ICCF 2011 0-1} ) (10... Bc7 11. c4 d4 12. exd4 cxd4 13. Nb3 Bg4 14. Nfxd4 Bxe2 15. Nxe2 Ng4 16. g3 Qg5 17. Ned4 Qh5 18. Nf3 Rad8 19. Nh4 g5 20. Nf3 Re6 21. Qd2 Nxh2 22. Qxg5+ {Skerlík,S (2352)-Rývová,M (2310) ICCF 2007 1/2}) 11. Nb3 (11. e4 Bc3 ( 11... Qe7 12. a4 (12. Nb3 Bc7 13. Nfd2 h6 14. f4 Be6 15. a4 Rad8 16. Bc1 b6 17. Rf2 a6 18. Nf1 b5 19. axb5 axb5 20. f5 Bxb3 21. cxb3 c4 22. bxc4 bxc4 23. Ng3 { Wilshusen,H (1393)-Dushkin,D (2227) ICCF 2019 0-1 (27)}) (12. Qc1 Be6 13. Nb3 Bc7 14. Re1 Rad8 15. c3 dxc3 16. Qxc3 b6 17. h3 Rc8 18. Bf1 Bf4 19. Rad1 Red8 20. Ba1 h6 21. Qb2 Bb8 22. d4 Nxd4 23. Nfxd4 {Mercky,G (2574)-Rhodes,J (2452) ICCF 2010 1/2 (35)}) 12... Bb4 13. Nc4 Rb8 14. Qc1 b6 15. Ba3 Bc3 16. Bb2 Ba6 17. Nfd2 Nb4 18. Bf3 Rbd8 19. Qb1 Nd7 20. Bg4 Ne5 21. Nxe5 Qxe5 22. Nf3 Qf4 23. Bh3 {Bristol,M (2138)-Morley,P (2327) ICCF 2012 0-1 (44)}) 12. Bxc3 (12. Rb1 Rb8 13. a3 h6 14. Bxc3 dxc3 15. Nc4 b5 16. Ne3 a5 17. Re1 Be6 18. Qc1 a4 19. Ra1 Qa5 20. Bf1 b4 21. axb4 cxb4 22. e5 Ng4 23. d4 Nxe3 {Cottarelli,F (1894) -Michael,D (2298) ICCF 2010 0-1 (28)}) (12. Qc1 Bxb2 13. Qxb2 b6 14. Rfe1 h6 15. a3 (15. c3 dxc3 16. Qxc3 Ng4 17. Rac1 Nge5 18. Nxe5 Rxe5 19. Bd1 Re7 20. Re3 Be6 21. Ba4 Nb4 22. Rg3 Qd4 23. Qxd4 cxd4 24. a3 Na2 25. Re1 Rc8 26. Nf3 Nc3 {Skerlík,S (2300)-Köhl,R (2294) ICCF 2012 0-1 (67)}) 15... Qe7 16. Nf1 Be6 17. Ng3 g6 {Skerlík,S (2295)-Latas,P (2163) ICCF 2014 1/2 (30)}) 12... dxc3 13. Nc4 (13. Nb1 Qa5 14. a4 b5 15. e5 Nd7 (15... Nd5 16. Nbd2 cxd2 17. axb5 Qxb5 { Rudbeck,J (2407)-Orellana,C (2123) ICCF 2005 0-1 (52)}) 16. e6 Rxe6 17. Ng5 Rg6 18. Bf3 Nde5 19. Be4 Rxg5 20. f4 b4 21. fxg5 Be6 22. Qe1 Re8 23. Qg3 Qd8 { Skerlík,S (2315)-Andersson,M (2296) ICCF 2012 0-1 (59)}) 13... b5 14. Ne3 Rb8 15. Ng5 h6 16. Nf3 a5 17. a3 Qc7 18. Re1 Nd4 19. Bf1 Be6 20. g3 b4 21. Bg2 { Cottarelli,F (2070)-Van Enk,S (2301) ICCF 2008 0-1 (31)}) (11. Nc4 Bc7 12. a4 Nd5 13. exd4 Nf4 14. Re1 Bg4 15. dxc5 Rxe2 16. Rxe2 Bxf3 17. gxf3 Qh4 18. Kf1 Na5 19. Nxa5 Bxa5 20. c3 Qxh2 21. Ke1 Nxe2 22. Qxe2 h5 {Welti,M (1931) -Burgarth,U (2474) ICCF 2008 0-1 (46)}) 11... dxe3 12. Nxa5 Nxa5 13. fxe3 Ng4 14. Re1 Nxe3 15. Qd2 Nc6 (15... Nac4 16. dxc4 Qxd2 17. Nxd2 Nxc2 18. Kf2 Nxe1 19. Rxe1 Bf5 20. Bc3 Re6 21. Rc1 Rae8 22. Bf3 b6 {Welti,M (1991)-Haidenbauer,D (1942) ICCF 2013 1/2 (27)}) 16. Bf1 Nf5 {Hansen,R (1530)-Veselinov,R (2073) ICCF 2015 1/2 (45)} 17. Rxe8+ Qxe8 18. Re1 Be6 19. Ng5 Qd7 20. Qf4 Re8 21. Ne4 Qe7 22. c3 b6 {Fernández Ballón,A (2450)-Arreaga,A (2316) ICCF 2008 1/2 (51)}) 5... O-O 6. a3 Be7 7. d4 c5 8. c4 cxd4 9. Bxd4 Nc6 10. c5 Nxd4 11. exd4 Re8 12. Nf3 Qa5+ 13. Qd2 Bxc5+ 14. Be2 Bb6 15. Qxa5 Bxa5+ {Odermatt,C (1688)-Salzmann, S (2233) ICCF 2016 0-1}) (4. e4 O-O (4... Nc6 5. Nf3 Nxe5 6. Nxe5 Qe7 7. f4 d6 8. Bb5+ Kd8 9. O-O dxe5 10. f5 Qc5+ 11. d4 Qxb5 12. dxe5+ Nd7 13. e6 fxe6 14. fxe6 Qb6+ 15. Kh1 Qxe6 16. c3 {Nelson,J (1557)-Merkuriev,V ICCF 2017 0-1 (28)}) 5. a3 d6 6. Bb2 Bc5 7. d4 Bb6 8. Bd3 Qe7 9. Nd2 Nc6 10. Ngf3 Bg4 11. c3 Rfe8 12. O-O Nh5 13. Qb3 Nf4 14. Bc2 Qf6 15. a4 Qg6 {Monteiro,A-Gomes,E ICCF 2009 0-1 (40)}) (4. Bc3 Nc6 5. Bxb4 Nxb4 6. c3 Nc6 7. d4 d5 8. Nd2 O-O 9. Qc2 Ne4 10. Nxe4 Bf5 11. Qb3 Bxe4 12. Qxb7 Na5 13. Qb2 Rb8 14. Qc1 Nc4 15. e3 Qh4 { Schalkwijk,P (2015)-Glaser,K (2167) ICCF 2006 0-1 (28)}) (4. f4 O-O 5. e3 Nc6 6. Bd3 {1-0 (6) Nelson,J (1590)-Logozar,E ICCF 2016}) 4... O-O (4... Nc6 5. Bb2 (5. Nf3 Nxe5 6. Nxe5 O-O (6... Ne4 7. Nc3 Nxc3 8. Qb3 Ba5 9. dxc3 Qf6 10. f4 Qxf4 11. Nd3 Qe3 12. Rc1 O-O 13. Qb5 Bb6 14. c5 c6 15. Qb4 Re8 16. cxb6 Qxd3 17. bxa7 Rxa7 18. Qd4 {Walker,J (1916)-Vasile,C (1922) ICCF 2012 0-1 (46)}) 7. Qb3 Bc5 8. Nc3 d6 9. Nf3 Be6 10. e3 Bb6 11. Bd3 d5 12. O-O dxc4 13. Bxc4 Bxc4 14. Qxc4 c6 15. d4 Bc7 16. Rab1 Rb8 {Domenche Redondo,F (1776)-Balañá Romero,R (1859) ICCF 2015 1-0 (65)}) (5. Bc3 d5 6. Bxb4 Nxb4 7. Qa4+ Nc6 8. cxd5 Nxd5 9. Nc3 Nxc3 10. dxc3 O-O 11. Nf3 Qf6 {0-1 (11) Enachi,M (2159)-Afloarei,J (1838) ICCF 2014}) 5... O-O (5... d5 6. cxd5 (6. e3 d4 7. Nf3 (7. exd4 Nxd4 8. Bc3 Bf5 9. d3 Qe7+ 10. Be2 O-O-O 11. h3 Bxd3 12. Bxb4 Qxb4+ 13. Qd2 Bxe2 {0-1 (13) Odermatt,C-Mayer,R (2469) ICCF 2013}) 7... Bg4 (7... Bc5 8. Nxd4 Nxd4 9. exd4 Bxd4 10. Bxd4 Qxd4 11. Nc3 Bg4 12. Be2 O-O-O 13. Bxg4+ Nxg4 14. O-O Qf4 15. g3 Qxc4 16. Qf3 Ne5 17. Qf5+ Qe6 18. Qxe6+ fxe6 19. Ne4 {Kirk,T (1527)-Irons,B (1866) ICCF 2018 0-1 (36)}) 8. h3 Bxf3 9. Qxf3 O-O 10. Be2 (10. Ba3 Qd6 (10... Re8 11. Bxb4 Nxb4 12. Na3 Ne4 13. d3 dxe3 14. fxe3 Nxd3+ 15. Bxd3 Qxd3 16. Rd1 Qc3+ 17. Ke2 Qxa3 18. Rhf1 Qb2+ 19. Ke1 Qc3+ 20. Ke2 Qxc4+ 21. Ke1 Rad8 { 0-1 (21) Meara,P-Cannon,D ICCF 2014}) 11. Bb2 Rfe8 12. Be2 Ne5 13. Qg3 Ne4 14. Qf4 Nxd2 15. Nxd2 Nd3+ 16. Bxd3 Qxf4 {0-1 (16) Flewelling,H (1796)-Chen,F ICCF 2015}) 10... Qd6 11. O-O Rfe8 12. Qf5 Bc5 (12... Rad8 13. a3 Bc5 14. a4 Ne4 15. Qg4 Re6 16. Bf3 Nxf2 17. Rxf2 Ne5 18. Qg3 dxe3 19. dxe3 Bxe3 20. Bxe5 Bxf2+ 21. Qxf2 Qxe5 22. Ra2 Qe1+ 23. Qf1 Qb4 24. Re2 {Wantoch-Rekowski,J (2245)-Martynov, A ICCF 2008 0-1 (42)}) 13. a4 a6 14. Bf3 Ne5 15. Na3 c6 16. Be2 Rad8 17. Rfd1 d3 {Stapinski,R (1902)-Eliseev,N (1971) ICCF 2017 0-1 (39)}) (6. a3 Be7 7. cxd5 Qxd5 8. Nc3 Qa5 9. e3 O-O 10. Be2 Rd8 11. Nf3 Ne5 12. Nxe5 Qxe5 13. d4 Qg5 14. O-O Qh4 15. g3 Qh3 16. f3 c5 17. d5 Bd6 {Recasens Sánchez,J (2124)-Barón González,A (2105) ICCF 2008 1/2 (60)}) 6... Qxd5 7. Nc3 (7. a3 Ba5 8. Nc3 (8. e3 Bg4 9. f3 Bf5 10. e4 Bxe4 11. fxe4 Nxe4 12. Nc3 Bxc3 13. dxc3 Qc5 14. Nh3 Rd8 15. Qf3 O-O 16. Be2 f5 17. Bc1 Rfe8 18. Bf4 Nxc3 19. Rc1 Nd4 { Wantoch-Rekowski,J (2173)-Shishkov,P (2282) ICCF 2010 0-1 (34)}) (8. Nf3 Bg4 9. e3 Bxf3 10. gxf3 O-O-O 11. Be2 Rhe8 12. Rg1 Qe6 (12... Ne5 13. Bc3 Ng6 14. Qc2 Rd7 15. h3 c6 16. Bxa5 Qxa5 17. Nc3 Red8 18. d4 c5 19. Kf1 Kb8 20. dxc5 Qxc5 21. Rc1 Rd2 22. Qb3 Qc7 23. Rb1 R8d7 24. Rg3 {Skerlík,S (2332)-Jankowicz,R (2387) ICCF 2008 0-1 (61)}) 13. Qa4 Nd5 14. Bc3 Nxc3 15. Nxc3 Qd6 16. Rd1 Qxh2 17. Qg4+ Kb8 18. Qxg7 a6 19. Ne4 f5 {Degterev,P (2475)-Kunzelmann,F (2476) ICCF 2010 0-1 (48)}) 8... Qh5 (8... Qd6 9. e3 (9. Nf3 Bg4 10. e3 Rd8 11. Be2 O-O 12. O-O Bxc3 13. Bxc3 Ne4 14. Qb1 Nxc3 15. dxc3 Bc8 16. Nd4 b6 17. Rd1 Qf6 18. Qc2 Ne5 19. Nb5 a6 20. Nd4 Bb7 {Feldborg,B (2211)-Demchenko,I ICCF 2011 0-1 (48)}) 9... O-O 10. Nf3 Ne5 (10... Bd7 11. Be2 Ne5 12. Nxe5 Qxe5 13. O-O Rfe8 14. d4 Qg5 15. Bf3 c6 16. Rb1 Bf5 17. Rc1 Bc7 18. g3 Rad8 19. Qb3 Bb6 20. h4 Qg6 21. Bg2 Ne4 22. Nxe4 {Ladeira,P-Wagle,D (1869) ICCF 2013 0-1}) 11. Nxe5 Qxe5 12. Be2 Rd8 (12... c6 13. O-O Bf5 14. d4 Qd6 15. Bf3 Rfe8 16. Rc1 Rad8 { 0-1 (16) Ladeira,P-Munoz,L (2072) ICCF 2013}) 13. O-O c6 (13... Qg5 14. Qc2 ( 14. Rc1 c6 15. d4 Bf5 16. Bf3 Bc7 17. g3 h5 18. e4 Bg4 19. Bxg4 hxg4 20. Re1 Bb6 21. Na4 Qg6 22. e5 Nh7 23. Nc5 Rd5 24. Nxb7 Rb8 25. Nd6 Qe6 {Belov,P (2142) -Boldysh,K (2346) ICCF 2012 1/2 (60)}) 14... c6 15. d4 Bf5 16. Bd3 Bxd3 17. Qxd3 Bc7 18. h3 Re8 19. a4 Rad8 20. Rad1 h5 21. Rfe1 a6 22. Ba3 Ba5 23. Re2 b5 24. Bb2 Bb4 25. axb5 {Muliuolis,V (1933)-Sherwood,A (2356) ICCF 2020 (30)}) 14. d4 Qg5 15. Bf3 Bc7 16. g3 Bh3 17. Re1 h5 18. Ne4 Nxe4 19. Bxe4 Rd6 20. Rc1 { Hernandez Martinez,J-Schumacher,U ICCF 2018 1/2 (41)}) (8... Qf5 9. e3 O-O 10. Nf3 Qg6 11. Rc1 Rd8 (11... Re8 12. Be2 Ne5 13. O-O c6 14. d4 Nxf3+ 15. Bxf3 Bf5 16. Ne2 Bc7 17. Ng3 Bxg3 18. hxg3 Be4 19. Rc5 Bxf3 {1/2 (19) Kural,A (2249) -Kosic,B (2152) ICCF 2010}) 12. Be2 Bxc3 13. Bxc3 Ne4 14. O-O Bh3 15. Ne1 Bf5 16. d4 Ne7 17. Nd3 Nxc3 18. Rxc3 Nd5 19. Rc1 c6 20. Ne5 {Muri,H (2355)-Miciak, E (2381) ICCF 2012 1/2 (43)}) (8... Bxc3 9. Bxc3 Bf5 10. e3 O-O-O 11. Ne2 Rhe8 12. Ng3 Ne4 13. Nxe4 Bxe4 14. f3 Bd3 15. Bxd3 Qxd3 16. Qe2 Ne5 17. Qxd3 Nxd3+ 18. Ke2 f6 19. g3 c5 20. a4 {Muri,H (2374)-Romanov,R (2393) ICCF 2011 1/2 (26)} ) 9. e3 Bg4 10. Be2 O-O 11. Bxg4 (11. Nf3 Rad8 12. O-O Rd6 13. Qb3 Qg6 14. Rfd1 Be6 15. Qa4 a6 16. d3 Rfd8 17. Qh4 Bf5 18. d4 Re8 19. Rac1 h6 20. Qg3 Qh7 21. Nh4 Bc2 22. Rd2 Be4 {Degterev,P (2475)-Champion,C (2398) ICCF 2010 1/2 (45)}) 11... Nxg4 12. Nf3 Rfe8 13. Rb1 Rad8 14. O-O Bb6 {1/2 (14) Muri,H (2355)-Bravo, W (2349) ICCF 2012}) (7. Nf3 Bg4 8. Nc3 Bxc3 9. Bxc3 O-O-O 10. Bxf6 gxf6 11. e3 Bxf3 12. gxf3 Rhe8 13. Be2 f5 14. Qc2 Nd4 15. Qd1 Re6 16. Rc1 f4 17. Rg1 fxe3 18. fxe3 Nxe2 {Bonatti,A (1754)-Donadio,A ICCF 2009 0-1 (33)}) (7. e3 Bg4 8. Nf3 Bxf3 9. Qxf3 (9. gxf3 O-O-O 10. Nc3 Qf5 11. Be2 Rd6 12. Rc1 Rhd8 13. Rc2 Ba5 14. a3 Ne5 15. Rg1 g5 16. Kf1 Nd3 17. Ba1 g4 18. f4 h5 19. Rg2 Kb8 20. Qb1 Bxc3 {Andreoli,A-Bellegotti,G ICCF 2012 0-1 (31)}) 9... Ne4 10. Bb5 Bxd2+ 11. Nxd2 Qxd2+ 12. Kf1 Qb4 13. Bxc6+ bxc6 14. Bc1 Rd8 15. g3 Rd2 16. Kg2 Rxf2+ 17. Qxf2 Nxf2 18. Kxf2 Qc3 {Wilshusen,H (1799)-Akkalyoncu,S ICCF 2010 0-1}) (7. Bxf6 gxf6 8. a3 Ba5 9. e3 Qc5 (9... Bf5 10. Nc3 Qc5 11. Rc1 O-O-O 12. Qb3 Ne5 13. Nf3 Be6 14. Qb2 Nxf3+ 15. gxf3 Rhg8 16. h4 f5 17. Rc2 Qe7 18. f4 Bd7 19. Bb5 a6 20. Bxd7+ Qxd7 21. h5 {Wantoch-Rekowski,J (2245)-Kolanek,R (2098) ICCF 2009 0-1 (51)}) 10. Nf3 Bf5 11. Be2 Rg8 12. O-O Bh3 13. Ne1 O-O-O 14. f4 Qb6 15. Bh5 Bf5 16. Qc1 Nd4 17. Bd1 Kb8 18. Rf2 Nb3 {Puoli,H (2332)-Au Cardero,R (2307) ICCF 2007 1/2 (53)}) 7... Qf5 (7... Bxc3 8. Bxc3 Be6 (8... O-O 9. e3 Ne4 10. Ne2 Qf5 11. f3 Nxc3 12. Nxc3 Nb4 13. Ne4 c5 14. a3 Nd5 15. Qb3 b6 16. Bc4 Be6 17. O-O Rfd8 18. Rfd1 h6 19. Rac1 Rab8 20. a4 {Ilzig,G (2264)-Hild,H (2155) ICCF 2017 1/2 (45)}) 9. e3 O-O-O 10. Nf3 Bg4 (10... Ne4 11. Qc2 Rhe8 12. Be2 Bf5 13. Qb3 Nxc3 14. Qxc3 g5 15. a4 g4 16. Nh4 Be4 17. O-O Qxd2 18. Qxd2 Rxd2 19. Bxg4+ Kb8 20. g3 Red8 21. Bf5 Bxf5 22. Nxf5 {Jacewicz,G (2269)-Kolanek,R (2236) ICCF 2020 1/2 (34)}) 11. Rc1 Qxa2 12. Bb5 Qd5 13. Bxc6 Qxc6 14. Be5 Bxf3 15. gxf3 Qe6 16. Rxc7+ Kb8 17. Re7+ Qxe5 18. Rxe5 Nd5 19. Qb3 {Kural,A (2178) -Tuncil,V ICCF 2010 1-0}) (7... Qd6 8. e3 O-O 9. Nf3 Bf5 10. Nb5 Qe7 11. Be2 a6 12. Nbd4 Nxd4 13. Nxd4 Bg6 14. O-O Rad8 15. a3 Bd6 16. Nf3 Rfe8 17. d4 Ne4 18. Qb3 Bh5 19. Rfd1 {Negroni,G-Taras,I (1764) ICCF 2012 0-1}) 8. Nf3 O-O 9. e3 Ne5 (9... Rd8 10. a3 Ba5 11. Be2 Qg6 12. Qa4 a6 13. Rc1 Rd6 14. Qf4 h6 15. O-O Bg4 16. Nb1 Rad8 17. Bxf6 Bxf3 18. Bxf3 {1/2 (18) Taulien,H (2350)-Rivas Maceda,J (2349) ICCF 2012}) 10. Nxe5 Qxe5 11. Be2 c6 (11... Re8 12. Qb3 a5 13. a3 Bf8 14. O-O c6 15. Nb5 Qd5 16. Bc4 Qd7 17. Bxf6 gxf6 18. Nd4 a4 19. Qb2 Qd6 20. Ba2 Bd7 21. Bb1 c5 22. Nf5 Qd5 23. Qc2 {Heß,H (2318)-Rodríguez López,R (2294) ICCF 2019 1/2 (26)}) 12. O-O Bf5 13. d4 Qa5 14. Qb3 Rad8 15. Bf3 Rfe8 16. Rac1 Be6 17. Qc2 {Ilzig,G (2264)-Cuccumini,V (2038) ICCF 2017 1-0 (50)}) 6. e3 d5 (6... Be7 7. Nc3 (7. Nf3 d6 8. d4 Bg4 9. Be2 d5 10. Nbd2 dxc4 11. Bxc4 Na5 12. Be2 c5 13. O-O Rc8 14. Ba3 Nd5 15. Ne4 c4 16. Qc1 b5 17. Bxe7 Qxe7 18. Nc5 Nb7 { Ramos Mora,J (1813)-Dzenis,J (2099) ICCF 2016 0-1 (28)}) 7... d5 8. cxd5 Nxd5 9. Nf3 Bg4 10. Be2 Ndb4 11. d4 Nd5 12. O-O Nxc3 13. Bxc3 Qd5 14. Nd2 Bxe2 15. Qxe2 Rfe8 16. Rfb1 Bf6 17. Qf3 Qxf3 18. Nxf3 {Ramos Mora,J (1749)-Balañá Romero,R (1872) ICCF 2019 1/2 (55)}) 7. cxd5 (7. Nc3 d4 8. exd4 Nxd4 9. Be2 (9. Nf3 Bxc3 10. Bxc3 Re8+ 11. Be2 Nxe2 12. Be5 Nd4 13. O-O Nxf3+ 14. Qxf3 Rxe5 15. d3 c6 16. Rab1 Bf5 17. Rxb7 {Tago,S (1769)-Grabowski,B (2053) ICCF 2013 0-1}) 9... Re8 10. a3 Bc5 11. Nf3 Ng4 12. O-O Qd6 13. g3 Qh6 14. Nh4 Nxe2+ 15. Nxe2 Qb6 16. Bc3 Nxf2 17. Rxf2 Bxf2+ 18. Kg2 Bg4 {Richardson,D (1787)-Hughes,G (1791) ICCF 2012 0-1}) 7... Nxd5 (7... Qxd5 8. Bxf6 (8. Nf3 Qf5 9. a3 Ba5 10. Be2 Qg6 (10... Ne4 11. Nc3 Bxc3 12. Bxc3 Nxc3 13. dxc3 Qa5 14. Qc1 b6 15. O-O Bb7 16. Qc2 Rad8 17. a4 Ne5 18. Nd4 a6 19. c4 Nd7 20. Bd3 Nf6 21. Rfd1 Rfe8 22. h3 {Frydendal,O (1913)-Hegelund,O ICCF 2009 0-1 (28)}) 11. Nh4 Qh6 (11... Qe4 12. Bxf6 gxf6 13. Nf3 Qg6 14. Nc3 Rd8 15. Rc1 Kh8 16. O-O Rg8 17. g3 {1-0 (17) Daatselaar,J (2074)-Walker,J (1943) ICCF 2008}) 12. Nf3 Bf5 13. O-O Rad8 14. Nc3 Rfe8 15. Qb3 Ne4 16. Nxe4 Bxe4 17. d3 Bd5 18. Qc2 Bb6 19. Rad1 Na5 { Wantoch-Rekowski,J (2245)-Ciesielski,S (2213) ICCF 2008 0-1 (75)}) 8... gxf6 9. Ne2 (9. Nf3 Kh8 (9... Rd8 10. a3 Ba5 11. Be2 Ne5 12. O-O c5 13. Nc3 Bxc3 14. dxc3 Bf5 15. Qxd5 Rxd5 16. Rfd1 Rad8 17. Rxd5 Rxd5 18. a4 b6 19. a5 Nxf3+ 20. gxf3 Rd2 21. axb6 {Joseph,F (2384)-Hannecart,M (2285) ICCF 2008 1/2 (34)}) ( 9... Be6 10. a3 Ba5 11. Be2 Rad8 12. O-O Kh8 13. Nc3 Bxc3 14. dxc3 Rg8 15. g3 Ne5 16. Qxd5 Bxd5 17. Nxe5 fxe5 18. f4 Be6 19. Rad1 b6 20. Kf2 f6 21. e4 { Kokorin,V (2325)-Gacnik,L (2165) ICCF 2011 1/2 (32)}) 10. Nc3 (10. Qb3 Qxb3 11. axb3 Na5 12. Bc4 c6 13. Nd4 c5 14. Nc2 Nxc4 15. Nxb4 cxb4 16. bxc4 Be6 17. d3 a5 18. Nd2 b5 19. cxb5 a4 20. Nc4 Rfb8 21. Kd2 Rxb5 {Ramos Mora,J (1792) -Ruiz-Jarabo,F (2308) ICCF 2018 0-1 (34)}) (10. Qc1 Ne5 11. Nxe5 Qxe5 12. Nc3 Bf5 13. Qb2 c5 14. Rc1 Rad8 15. Be2 Rg8 16. g3 Bh3 17. f4 Qd6 18. Rg1 Rge8 19. Rd1 Bf5 20. Kf2 Qe6 21. g4 Bd3 {Fels,B (2142)-Dolya,A ICCF 2011 0-1 (46)}) 10... Bxc3 11. dxc3 Qc5 12. Qd2 Bf5 13. Nd4 Rad8 14. Be2 Rg8 15. g3 Bh3 16. O-O-O Rd6 17. Qc2 Na5 18. Nb3 Nxb3+ 19. axb3 Rc6 20. Kb2 Be6 {Gavrijski,D (1993)-Efimov,A (1937) ICCF 2010 1/2 (64)}) 9... Qe5 (9... Rd8 10. Nec3 Qg5 11. g3 Bg4 12. Be2 Bh3 13. a3 Ba5 14. f4 Qh6 15. Bf1 Rd6 16. Qf3 Rad8 17. Bxh3 Qxh3 18. Ra2 Rd3 19. Rb2 Nd4 20. Qxb7 c6 {0-1 (20) Böhnke,H (2037)-Wister,F (2280) ICCF 2009}) 10. Nbc3 Bf5 11. a3 Ba5 12. Rc1 Rfd8 13. Ng3 Bg6 14. h4 Rd7 15. h5 Bxc3 16. Rxc3 Rad8 17. hxg6 Qxc3 18. gxf7+ Kf8 19. Rxh7 {Jiménez Ariza, J-Piqueras Jiménez,M (1834) ICCF 2011 1-0 (42)}) 8. Nf3 (8. Be2 Qg5 9. Nf3 Qg6 10. h4 Bg4 11. Qb3 Be6 12. h5 Qf5 13. Bd3 Qg4 14. Qc2 h6 15. a3 Be7 16. Rh3 Nf6 17. Kf1 Nxh5 18. Bh7+ Kh8 19. Be4 Na5 {Schreuders,A (2335)-Hospers,B (1993) ICCF 2020 1-0 (47)}) 8... Qd6 (8... Bg4 9. Be2 (9. a3 Be7 10. Be2 (10. Nc3 Ne5 11. Nxd5 Qxd5 12. Bxe5 Bxf3 13. Qxf3 {1-0 (13) Balazs,C (2106)-Lozano Díaz,A (2182) ICCF 2006}) 10... Re8 11. O-O Qd6 12. Nc3 Rad8 13. d4 Nb6 14. Ne4 Qg6 15. Ng3 Bd6 16. Bd3 Qh6 17. h3 Be6 18. Nf5 Bxf5 19. Bxf5 Ne7 20. Bd3 Ned5 { Jäger,E-Steinman,A ICCF 2007 1-0 (31)}) 9... Qe7 (9... Re8 10. O-O (10. a3 Bd6 11. Qc2 Rb8 12. h3 Bh5 13. Qf5 Bxf3 14. Qxf3 Nb6 15. d4 Na4 16. Ra2 Re6 17. d5 Ne5 18. Qe4 Nc5 19. Qc2 Re8 20. O-O c6 21. dxc6 Nxc6 {Wantoch-Rekowski,J (2305) -Królik,Z (2336) ICCF 2006 1/2 (55)}) 10... Qe7 (10... Qd7 11. a3 Be7 (11... Bd6 12. Nc3 Nxc3 (12... Nb6 13. Nb5 Be7 14. h3 Bh5 15. Qc2 Bg6 16. d3 a6 17. Nbd4 Bf6 18. Rab1 Nxd4 19. Nxd4 Na4 20. Bg4 Bxd3 21. Qxd3 Nxb2 22. Rxb2 Qd8 23. Rxb7 c5 24. Rd7 {Buczinski,H (2182)-Ensor,T ICCF 2011 1-0}) 13. Bxc3 Rad8 14. d4 Ne7 15. Bb4 Nd5 16. Qc2 Nxb4 17. axb4 a6 18. Rfb1 c6 19. Ne1 h5 20. Bd3 Qe7 21. h3 Be6 22. Qe2 g6 23. Bc4 {Ramos Mora,J (1792)-Llompart Flexas,G (2146) ICCF 2018 0-1 (41)}) (11... Ba5 12. d4 Qe6 13. Qb3 Rad8 14. h3 Bf5 15. Nbd2 Bxd2 16. Nxd2 Bxh3 {1/2 (16) Kural,A (2397)-Maia,V (2329) ICCF 2018}) 12. d4 a6 13. Nbd2 Rad8 14. Bd3 Bh5 15. h3 Bg6 16. Bxg6 hxg6 17. Rb1 Nb6 18. Qc2 Na5 19. Rfc1 Nc6 20. e4 Rc8 21. Qb3 Na5 22. Qc3 {Ilzig,G-MacMillen,A (1714) ICCF 2016 1-0 (39)}) (10... a6 11. a3 Be7 (11... Bd6 12. Nc3 Nxc3 13. Bxc3 b5 14. Re1 Ne7 15. e4 c5 16. h3 Bh5 17. d4 Bg6 18. Bf1 Nc6 19. d5 Ne5 20. Nxe5 Bxe5 21. Bxe5 Rxe5 22. a4 Rb8 23. Qd3 {Degterev,P (2530)-Kýhos,A (1701) ICCF 2007 1-0 (40)}) 12. d4 Rb8 13. Nbd2 Bd6 14. Qc2 Qd7 15. Bc4 Nb6 16. Bd3 h6 17. h3 Bxf3 18. Nxf3 Rbd8 19. Bf5 Qe7 20. Bh7+ Kf8 21. Bd3 Qd7 22. Rfd1 {Jiménez Ariza,J (2373) -Balañá Romero,R (1858) ICCF 2014 1-0 (48)}) 11. a3 (11. d4 Rad8 12. a3 (12. Kh1 a6 13. a3 Ba5 14. h3 Bf5 15. Bd3 Bxd3 16. Qxd3 Rd6 17. Nbd2 Bxd2 18. Nxd2 Qd7 19. Ne4 Rh6 20. Kh2 Qf5 21. Nc5 Qxd3 22. Nxd3 f5 23. Rab1 b6 {Rajala,O (1861)-Salminen,K ICCF 2007 1-0 (54)}) 12... Ba5 13. Qb3 Bb6 (13... Nf4 14. Bd1 Nxg2 15. Kxg2 Qe4 16. Bc3 Ne5 17. Nbd2 Bxf3+ 18. Bxf3 Qg6+ 19. Kh1 Nxf3 20. Bxa5 Qh5 21. Nxf3 Qxf3+ 22. Kg1 b6 23. Qd1 {Kural,A (2305)-Spasov,S (2166) ICCF 2011 1/2 (47)}) 14. Nc3 Be6 15. Qc2 Nxc3 16. Bxc3 Bd5 17. Bb2 Rd6 18. Bd3 Bxf3 19. g3 Rh6 20. Be2 Nxd4 21. Bxd4 Bxd4 22. Ra2 Bd5 {Di Pietro,R (1665) -Lanzani,P (1891) ICCF 2008 0-1}) (11. Qc2 Rad8 12. h3 Bh5 13. Nc3 Bxc3 14. Bxc3 Nxc3 (14... Nf4 15. Bd1 Nd3 16. Qb3 b6 17. Qb5 Bxf3 18. Bxf3 Nce5 19. Be2 c6 20. Qa4 Nc5 21. Qc2 Ned3 22. Bd4 Qe4 23. Bf3 Qg6 24. Bxc5 bxc5 25. Qc3 Qd6 26. a3 {Buczinski,H (2261)-Bernal Caamaño,J (1859) ICCF 2010 1-0 (51)}) 15. Qxc3 Ne5 16. g4 Nxf3+ 17. Bxf3 Bg6 18. Bxb7 Rd3 19. Qa5 Ra3 20. Qd5 Rd8 21. Qf3 c5 22. Rfd1 h6 {Buczinski,H (2261)-Chukanov,I (2249) ICCF 2010 1/2 (28)}) 11... Ba5 (11... Bd6 12. Re1 (12. h3 Bh5 (12... Bf5 13. Re1 (13. Nc3 Nxc3 14. Bxc3 Bxa3 15. Bb5 a5 16. Ne5 Nxe5 17. Bxe8 Rxe8 18. Bxe5 b5 19. Bxc7 a4 20. Qe2 b4 21. Bg3 Rd8 22. d4 Bd7 23. Qa2 Bc6 24. Rfe1 Bd5 {Vasile,C (2139)-Fengier,D (2107) ICCF 2014 0-1 (42)}) (13. Bb5 a6 14. Bc4 Nb6 15. Be2 Rad8 16. d4 Qe6 17. Nc3 Na5 18. e4 Bg6 19. Re1 Qb3 20. Qc1 Nac4 21. Ra2 Nxb2 22. Rxb2 Qxa3 { Schmidt,K (2151)-Radu,V (2243) ICCF 2017 0-1 (42)}) 13... Rad8 14. Nc3 Nxc3 15. Bxc3 a6 16. Qb3 b5 17. Qb2 f6 18. d4 Qf7 19. Nd2 Qg6 20. Bf3 Ne7 21. a4 bxa4 22. Rxa4 Bxh3 23. Bb4 Bc8 24. Rc1 {Buczinski,H (2201)-Øvergaard,J (1951) ICCF 2011 1-0 (50)}) 13. Qb3 Nb6 14. d3 (14. Rc1 Bg6 15. d4 a6 16. Nbd2 Na5 17. Qc3 Na4 18. Qxa5 Nxb2 19. Ne5 Bxe5 20. Qxe5 Qxe5 21. dxe5 c6 22. Ra2 Nd3 23. Bxd3 Bxd3 {Kural,A (2375)-Bars,J (2367) ICCF 2016 1/2 (46)}) 14... Ne5 15. Bxe5 Bxe5 16. d4 Bd6 17. Nc3 c6 18. a4 Rab8 19. a5 Nd7 20. Nd2 Bxe2 21. Nxe2 Nf6 22. Rfc1 h6 23. a6 c5 {Degterev,P (2545)-Andriuschenko,N (2491) ICCF 2007 1/2 (42)}) ( 12. Nc3 Nxc3 13. Bxc3 Bxa3 14. h3 Bh5 15. Qa4 (15. d4 Bb4 16. Qb3 a5 17. Rfc1 Red8 18. Qc4 Bxc3 19. Qxc3 Qb4 20. Qc2 Bg6 21. Bd3 Bxd3 22. Qxd3 Qd6 23. Qb5 Ra6 24. Rc5 Rb6 {Kural,A (2325)-Davis,J (2234) ICCF 2012 1/2 (33)}) 15... Bb4 16. Rfc1 Bxc3 17. Rxc3 Qb4 18. Qxb4 Nxb4 19. Rxc7 a5 20. Rxb7 Nc2 21. Ra4 { 1-0 (21) Nicotera,A-Cavezzana,D ICCF 2011}) 12... Rad8 (12... Nf4 13. Bf1 Ne6 14. h3 (14. Be2 Rad8 15. Nc3 Qf6 16. d4 Ng5 17. Nxg5 Bxe2 18. Qxe2 Qxg5 19. Nb5 Ne7 20. Nxd6 Rxd6 21. e4 Ng6 22. g3 {Kural,A (2324)-Kahl,F (2470) ICCF 2013 1/ 2 (40)}) 14... Bh5 15. Be2 Nc5 16. d4 Ne4 17. Bd3 Rad8 18. Bxe4 Qxe4 19. Nbd2 Qd3 20. Qb1 Qxb1 21. Raxb1 Bg6 22. Rbc1 f6 23. Nb3 Bf8 24. Nbd2 {Morley,P (2277)-Lundberg,E (1965) ICCF 2008 1/2 (29)}) 13. d4 Nxe3 14. fxe3 Qxe3+ 15. Kf1 Qh6 16. Nbd2 Bxh2 17. Nxh2 Qxh2 18. Bxg4 {1-0 (18) Daatselaar,J (2203) -Luca,A (2203) ICCF 2006}) 12. Qa4 (12. Qb3 Rad8 13. h3 (13. Qxb7 Rd6 14. Qb3 Nf4 15. exf4 Qxe2 16. Nc3 Qd3 17. Rae1 Rde6 18. Rxe6 fxe6 19. Qa4 Bxf3 20. gxf3 Bxc3 21. Bxc3 Qg6+ {1/2 (21) Böhnke,H (2096)-Grabner,H (2350) ICCF 2008}) 13... Bf5 14. Nc3 Nxc3 15. Bxc3 Be4 16. d4 Bd5 17. Qc2 Bxc3 18. Qxc3 Rd6 19. Rfc1 Rg6 20. Rab1 Qf6 21. Kf1 a6 22. Bd1 b5 23. Bc2 Rh6 {Daatselaar,J (2233)-Seeger,M ICCF 2006 1/2 (37)}) 12... Qe4 (12... Qd7 13. Rd1 (13. h3 Bf5 14. Nc3 (14. Bb5 a6 15. Bxc6 Qxc6 16. Qxc6 bxc6 17. Nd4 Rab8 18. Nxc6 Rxb2 19. Nxa5 Reb8 20. Nc3 Nxc3 21. dxc3 R8b5 22. Nc6 Be4 23. Nb4 Rg5 24. g3 a5 25. Na6 Rh5 {Destruels Moreno,V (2368)-Florea,M (2446) ICCF 2013 1/2 (46)}) 14... Nxc3 15. dxc3 Qe7 16. c4 Bb6 17. Rad1 Rad8 18. Qb3 Na5 19. Qc3 f6 20. Nd4 Bg6 21. Bg4 c5 22. Nf5 Qf8 23. Rd5 Rxd5 24. cxd5 h5 {Fagerbekk,E (2178)-Pawlowski,W (2154) ICCF 2011 1/2 (30)}) 13... Rad8 14. Nc3 Bxf3 15. Bxf3 Bxc3 16. Bxc3 Ne5 17. Qe4 Nxf3+ 18. Qxf3 c5 19. Bb2 Qb5 20. Rab1 Qd3 21. Rbc1 Rc8 22. Qg4 f6 23. Qa4 Re7 24. g3 { Muri,H (2405)-Cimicki,D (2388) ICCF 2008 1/2 (38)}) (12... Bf5 13. Rc1 Bb6 14. h3 Rad8 15. Nc3 h6 16. Bb5 Nxc3 17. Bxc3 Rd5 18. Bc4 Rd6 19. Bb3 Qd7 20. Bc2 Bxc2 21. Qxc2 Rg6 22. Kh1 Qd5 23. a4 a6 24. Qa2 {Buczinski,H (2201)-Kokorin,V (2231) ICCF 2011 1/2 (61)}) 13. Qxe4 Rxe4 14. h3 (14. Nc3 Nxc3 15. Bxc3 Bxc3 16. dxc3 Re6 17. h3 Bxf3 18. Bxf3 Rd8 19. Rfd1 Red6 20. Kf1 Kf8 21. Ke2 Ke7 22. Rxd6 Rxd6 23. Rd1 Rxd1 24. Kxd1 Kd6 25. Kc2 Kc5 {Bäckström,M (2228)-Gavrijski, D (2143) ICCF 2009 1/2 (50)}) 14... Bh5 15. Nc3 Bxc3 16. Bxc3 Nxc3 17. dxc3 Bxf3 18. Bxf3 Rc4 19. Rab1 {1/2 (19) Daatselaar,J (2177)-Gavrijski,D (2143) ICCF 2009}) (9... Qd7 10. O-O Rad8 11. a3 Ba5 12. d4 Rfe8 13. Nbd2 Bc3 (13... Qe6 14. Ng5 Bxe2 15. Nxe6 Bxd1 16. Nxd8 Be2 17. Rfe1 Bh5 18. Nxc6 Bxd2 19. Nb4 Nxb4 20. axb4 Bxe1 21. Rxe1 f6 22. f3 c6 23. Kf2 Bf7 24. Ra1 a6 25. e4 { Muri,H (2304)-Rosén,L (2355) ICCF 2014 1/2 (26)}) 14. Qc2 Bxb2 15. Qxb2 Nf4 16. Bd1 Nd5 17. Qxb7 Rb8 18. Qa6 Rb6 19. Qc4 Reb8 20. Rc1 Be6 21. Qa4 {Kural,A (2178)-Mendelsohn,D (1842) ICCF 2010 1-0 (44)}) 10. O-O (10. a3 Bd6 11. Qc2 Ne5 12. Nc3 Nf6 13. Nh4 Bxe2 14. Nxe2 Rad8 15. Nf5 Qe6 16. O-O Rfe8 17. Rab1 b6 18. Rbc1 {1-0 (18) Wantoch-Rekowski,J (2246)-Puleston,T (1889) ICCF 2008}) 10... Rad8 11. a3 (11. Nd4 Bxe2 12. Nxe2 Rfe8 13. Ng3 Qe6 14. Qf3 Ne5 15. Bxe5 Qxe5 16. d4 Qd6 17. a3 Ba5 18. Ra2 g6 19. Rb2 f5 20. Ne2 Qa6 21. Rc1 Re6 22. Nf4 Rc6 {Wantoch-Rekowski,J (2173)-Schulz,R (2221) ICCF 2010 1/2 (28)}) 11... Ba5 12. Qa4 (12. h3 Bf5 13. d4 Rd6 14. Nbd2 Rg6 15. Kh1 Rh6 16. Ng1 Qe6 17. Nb3 Bc3 18. Ra2 Bxb2 19. Rxb2 Nc3 20. Qe1 Na4 21. Nc5 Nxc5 22. dxc5 b6 23. Qc3 Rd8 { Fagerbekk,E (2220)-Keber,E (1590) ICCF 2010 1/2 (35)}) 12... Bh5 13. Rc1 Nb6 14. Qb5 Rd5 15. Qb3 Qe6 16. Bc3 Rd6 17. Qxe6 fxe6 18. Bxa5 Nxa5 19. Rxc7 Nd5 20. Rc2 {Roig García,J (1781)-Puertas Covarrubias,F (1944) ICCF 2018 0-1 (29)}) (8... Bf5 9. a3 (9. Be2 Qd7 (9... Nb6 10. a3 Ba5 11. O-O Bd3 12. Nd4 Bxe2 13. Qxe2 Nxd4 14. Bxd4 c6 15. Rc1 Nd5 16. Qg4 f6 17. Nc3 Bxc3 18. dxc3 Qc8 19. Qxc8 Rfxc8 20. c4 Nc7 {1/2 (20) Daatselaar,J (2074)-Bjazevic,P (2245) ICCF 2008}) ( 9... Qe7 10. a3 (10. O-O Rfd8 (10... Rad8 11. Bc4 Rd6 12. d4 Rfd8 13. Nbd2 Nb6 14. a3 Bxd2 15. Nxd2 Nxc4 16. Nxc4 Rh6 17. Nd2 Qh4 18. Nf3 Qh5 19. Re1 Be4 20. Qe2 Rd5 21. Kf1 Rg6 {0-1 (21) Ramos Mora,J (1964)-Jimena Bonillo,S (1817) ICCF 2013}) 11. a3 Ba5 12. Qb3 Rd6 13. Nc3 Be6 (13... Nxc3 14. Bxc3 Be4 15. d3 Bd5 16. Qb2 Bxc3 17. Qxc3 {1/2 (17) Schmidt,K (2148)-Shchebenyuk,M (2181) ICCF 2014 }) 14. Nxd5 Bxd5 15. Qa4 Bb6 16. Rac1 Rad8 17. d3 Rg6 18. Qf4 a6 19. Rfe1 h6 20. e4 Be6 21. Nh4 Rg5 {Morley,P (2201)-Harris,T ICCF 2007 1/2 (34)}) 10... Bd6 11. Qb3 Nb6 12. O-O Rad8 13. Qc3 f6 14. d4 Qe6 15. Nbd2 Nd5 16. Qb3 Na5 17. Qa4 b6 18. Rfe1 Qe8 19. Qxe8 Rfxe8 20. Bf1 Bg4 21. e4 {Wantoch-Rekowski,J (2245) -Wójcik,W (2261) ICCF 2009 1/2 (89)}) (9... Be7 10. O-O Ndb4 11. Nc3 Nd3 12. Qb3 Nc5 13. Qd1 Nd3 14. Qb3 Be6 15. Qb5 Ncb4 16. a3 a6 17. Qxb7 Rb8 18. Qe4 Nc5 19. Qd4 Nc6 20. Qxd8 Rfxd8 21. Bc1 {Fagerbekk,E (2296)-Duchardt,A (2290) ICCF 2015 1/2 (38)}) 10. a3 Be7 11. d3 Rad8 12. Nbd2 Rfe8 13. O-O Qe6 14. Re1 Qg6 15. Qc2 Nb6 16. e4 Bh3 17. Bf1 Bg4 18. Rac1 Bf6 19. h3 Bc8 20. Re3 Be6 { Tyutyunnik,R (2286)-Kovalsky,S (2238) ICCF 2015 1-0 (66)}) 9... Ba5 10. Be2 Qd6 (10... Qe7 11. O-O Rad8 12. Qa4 (12. Qb3 Qe6 (12... Nf4 13. Bc4 (13. Nc3 Bxc3 14. exf4 Bxb2 15. Qxb2 Qxe2 16. Qxb7 Be4 17. Rfe1 Qd3 18. Ne5 Nxe5 19. Qxe4 Qxe4 20. Rxe4 Nd3 21. g3 Rfe8 22. Re3 Rxe3 23. fxe3 Rb8 24. Kf1 c5 {Muri,H (2335)-Peczkowski,M (2300) ICCF 2013 0-1 (30)}) 13... Nd3 14. Bd4 Qe4 15. Nc3 Qg4 16. h3 Qg6 17. Ne2 Bxh3 18. Ng3 Nxd4 19. Nxd4 Nxf2 20. Kxf2 Bc8 21. Rad1 c5 22. Nf3 Bc7 23. Ne2 a6 24. a4 {Reinhart,K (2471)-Haznedaroglu,K (1990) ICCF 2006 1-0 (28)}) (12... Rd6 13. Nc3 Nxc3 14. Bxc3 Bxc3 15. Qxc3 Rfd8 16. d4 Be4 (16... Rg6 17. g3 Rh6 18. Rfc1 Qd7 19. Nd2 Bg4 20. f3 Bh3 21. Ne4 Bf5 22. Bd3 Qe7 23. Qc5 Qd7 24. g4 Bxe4 25. Bxe4 Re8 26. Kh1 Re7 27. Ra2 Qe8 28. Qf5 { Degterev,P (2460)-Buczinski,H (2312) ICCF 2006 1-0 (64)}) 17. Nd2 Bd5 18. Bd3 f5 19. Bxf5 Bxg2 20. Bxh7+ Kxh7 21. Kxg2 Ne5 22. Ne4 Rg6+ 23. Ng3 Ng4 24. h3 { Heß,H (2355)-Stocker,N ICCF 2007 1/2 (49)}) 13. d4 Bb6 14. Nbd2 Na5 15. Qd1 c5 16. e4 Nf4 17. d5 Rxd5 18. exd5 Qxe2 19. Qa4 c4 20. Be5 Nxd5 21. Rac1 f6 22. Bd4 Qe8 23. Qxe8 Rxe8 {Kapustin,A (2018)-Ivanov,V (2176) ICCF 2013 0-1 (52)}) ( 12. d4 Rfe8 13. Qb3 Nf4 14. Bd1 Bd3 15. Nbd2 Bxf1 16. Nxf1 Nd5 17. Ng3 Bb6 18. Be2 g6 19. Rd1 Na5 20. Qc2 f5 21. Ne5 c5 22. Bb5 Rf8 23. dxc5 Nxe3 {Daatselaar, J (2203)-Chripko,L (2071) ICCF 2006 0-1 (60)}) 12... Nb6 13. Qb3 Qe6 (13... Rfe8 14. d4 g5 15. Bb5 (15. g3 h6 16. Rc1 Qe6 17. Nfd2 Qxb3 18. Nxb3 Na4 19. Bc3 Bb6 20. Bb5 {1-0 (20) Fagerbekk,E (2187)-Holec,M (2302) ICCF 2013}) 15... g4 16. Nfd2 Qh4 17. Rc1 Rd6 18. Bxc6 bxc6 19. Rc5 Be6 20. Qc2 Bxd2 21. Nxd2 Bd5 22. Bc3 Rh6 23. Nf1 Be4 24. Qd2 Nd5 25. Bb4 {Wantoch-Rekowski,J (2322)-Oprisor, R (2356) ICCF 2007 0-1 (56)}) 14. Qxe6 fxe6 15. d4 (15. Bc3 e5 16. Bxa5 Nxa5 17. Nxe5 Bxb1 18. Rfxb1 Rxd2 19. Kf1 {Mehlhorn,U (2376)-Hamann,H (2313) ICCF 2018 1/2 (38)}) 15... Na4 16. Ra2 Be4 17. Ba1 Bd5 18. Rc2 Be4 19. Rcc1 Bxf3 20. Bxf3 Rd6 21. Rfd1 h6 22. Kf1 {Wantoch-Rekowski,J (2305)-Ruhmke,S ICCF 2006 1/2 (57)}) (10... Qd7 11. Nc3 Nxc3 12. dxc3 Qe6 13. O-O Rfd8 14. Nd4 Nxd4 15. cxd4 Qb6 16. Qa4 c5 17. Qb5 Qxb5 18. Bxb5 a6 19. Be2 Rac8 {Schmidt,K (2157)-Robert, G (2136) ICCF 2011 0-1 (36)}) 11. O-O Rad8 12. Qb3 Rfe8 13. Rc1 (13. d4 Re6 14. Bc4 Be4 15. Ng5 Rh6 16. f4 Qg6 17. Nxe4 Qxe4 18. Rf3 Rg6 19. Kh1 Rh6 {1/2 (19) Wantoch-Rekowski,J (2288)-Lisov,S ICCF 2006}) 13... Bb6 14. Nc3 Nf6 (14... Nxc3 15. Bxc3 Be4 16. Qb5 Qh6 17. Qg5 Qxg5 18. Nxg5 Bd3 19. Bxd3 Rxd3 20. a4 f6 21. Nf3 a5 22. Ne1 Rd5 23. d4 Kf7 24. Rab1 Ne7 25. h3 Nf5 26. Bb2 {Ilzig,G (2265) -Senzacqua,F (2168) ICCF 2017 1-0 (55)}) 15. Na4 Ne4 16. Nxb6 axb6 17. d3 Nc5 18. Qc3 Qh6 19. Rd1 Na4 20. Qc2 {Jacewicz,G (2253)-Gromov,S (2248) ICCF 2016 1/ 2 (57)}) 9. a3 (9. Nc3 Bxc3 (9... Rd8 10. Qc2 Bg4 11. Be2 Nxc3 12. Bxc3 Bxc3 13. Qxc3 Nb4 14. O-O c5 15. h3 Bf5 16. d4 Rac8 17. Qb3 Bc2 18. Qb2 Be4 19. a3 Nc2 20. dxc5 Qxc5 21. Rad1 {Degterev,P (2545)-Sukhov,N (2437) ICCF 2008 1/2 (48)}) 10. dxc3 Rd8 11. Bc4 Bg4 12. Qc2 Bxf3 13. gxf3 Ne5 14. Be2 Nb6 15. Rd1 Qc6 16. Qe4 Rxd1+ 17. Kxd1 Rd8+ 18. Kc2 Nbc4 19. Qxc6 Rd2+ 20. Kc1 bxc6 { Wilshusen,H (1799)-Mislin,R ICCF 2010 0-1 (30)}) (9. Qc2 Bg4 10. a3 (10. Be2 Rfe8 11. Ng5 Qh6 12. Bxg4 Nxe3 13. fxe3 Qxg5 14. Bf3 Rxe3+ 15. Kd1 Rd8 16. Bxc6 Red3 {Stapinski,R (1993)-Carpenito,M ICCF 2006 0-1}) 10... Bxf3 11. gxf3 Ba5 12. Bd3 Nf6 13. Nc3 Rad8 14. Be2 Rfe8 15. Rd1 (15. O-O-O Qe6 16. Na4 Bb6 17. Bc4 Qd6 18. Rhg1 Ne5 19. Be2 Ng6 20. Kb1 a6 21. h4 Nxh4 22. f4 Ng6 23. f5 Nf4 24. Bc4 N4h5 25. d3 Rd7 26. Nxb6 cxb6 {Buss,M (2197)-Sereni,V (1868) ICCF 2019 1-0 (40)}) 15... Re6 16. Kf1 Qd7 17. h4 Rd6 18. d4 Bxc3 19. Qxc3 h6 20. Rc1 Rc8 {Puoli,H (2305)-Carlsen,T (2132) ICCF 2016 1-0 (37)}) 9... Ba5 10. Qc2 (10. Be2 Qg6 (10... Re8 11. O-O Qg6 12. Kh1 (12. Nc3 Nxc3 13. Bxc3 Bxc3 14. dxc3 Bh3 15. Ne1 Bf5 16. Qb3 b6 17. Rd1 Be4 18. f3 Na5 19. Qb2 Bf5 20. e4 Be6 21. Nc2 { 1/2 (21) Schmidt,K (2148)-Tieken,F (2111) ICCF 2014}) 12... Bg4 (12... a6 13. d4 Bg4 14. Nbd2 Rad8 (14... Qh5 15. Rc1 Rad8 16. Nb3 Rd6 17. Ng1 Bxe2 18. Qxe2 Qxe2 19. Nxe2 f5 20. g3 b5 21. Nc3 Nb6 22. Nb1 Nc4 23. Bc3 Bxc3 24. Rxc3 g5 25. N1d2 Nxd2 26. Nxd2 {Fagerström,M (2298)-Dullemond,H (2297) ICCF 2019 1/2 (45)}) 15. Nb3 Bb6 16. Rc1 Qh5 17. Qc2 Bf5 18. Bd3 Bg4 19. Ng1 Re6 20. h3 Rh6 21. Nc5 {Kural,A (2375)-Tiemann,H (2361) ICCF 2016 1-0 (48)}) 13. Qa4 (13. h3 Qh6 14. Qa4 Bd7 (14... Bf5 15. Qh4 Qd6 16. Bc4 Bg6 17. Rc1 h6 18. Bxd5 Qxd5 19. Nc3 Qb3 20. Na4 Rad8 21. Bc3 Bxc3 22. Rxc3 Qd5 23. Nc5 Ne5 24. Nxe5 {1/2 (24) Kural,A (2351)-Fister,B (2305) ICCF 2014}) 15. Rc1 Bb6 16. Nc3 Nf6 17. Qh4 Qxh4 18. Nxh4 Na5 19. Rab1 c5 20. d3 Rac8 21. Ba1 c4 22. dxc4 Nxc4 23. Nd5 Nxd5 24. Rxc4 Ne7 {Wolf,W (2310)-Traut,G (2108) ICCF 2019 1/2 (39)}) 13... Nb6 14. Qf4 Re4 ( 14... Nd5 15. Qg3 Bh5 16. Rc1 Qxg3 17. hxg3 Rad8 18. Nc3 Nce7 19. Rab1 c6 20. Kg1 Nxc3 21. Bxc3 Bxc3 22. Rxc3 b6 23. d4 f6 24. a4 {Kural,A (2354)-Buker,M (1900) ICCF 2014 1-0 (55)}) 15. Qg3 Na4 16. d3 Re6 17. Ra2 Rd6 18. Ba1 Be6 19. Qxg6 hxg6 20. Rc2 Bf5 21. e4 Bg4 22. e5 {Stapinski,R (1744)-Mallmann,B ICCF 2020 1/2}) 11. Nh4 (11. g3 Bg4 12. Nh4 Bxe2 13. Qxe2 Qc2 14. Bc3 Nxc3 15. Nxc3 Bxc3 16. dxc3 Qxc3+ {0-1 (16) Odermatt,C-Gacnik,L (2184) ICCF 2013}) 11... Qe4 12. Nf3 Qg6 (12... Re8 13. O-O Nf4 14. Bb5 Nd3 15. Bc3 Bb6 16. Ne1 Nxe1 17. Rxe1 Re6 18. d4 Rg6 19. Bf1 Bh3 20. f3 Qh4 21. Nd2 Ne7 22. Nc4 Nd5 23. Bb2 Be6 24. Qd2 {Fagerbekk,E (2178)-Andersen,J (2168) ICCF 2011 1-0 (40)}) 13. Nh4 Qe4 14. Nf3 Qg6 15. Nh4 Qe4 16. Nf3 Qg6 17. Nh4 Qe4 18. Nf3 Qg6 19. Nh4 Qe4 20. Nf3 {1/2 (20) Belov,P (2142)-Pereboev,K ICCF 2012}) 10... Bg4 (10... Re8 11. Bd3 h6 12. O-O Bg4 13. Bh7+ Kh8 14. Nh4 Nce7 15. Be4 Rad8 16. Nf3 Ng6 17. h3 Bxf3 18. Bxf3 Nh4 19. Bh5 Nf6 20. Bxf7 Re7 21. Bb3 c5 22. Ba4 {Daatselaar,J (2203) -Borisovs,L (2257) ICCF 2006 0-1 (40)}) 11. Be2 (11. Bb5 Nce7 12. Be2 Bf5 13. Qa4 Bb6 14. O-O Rad8 15. Qc4 Qc6 16. Qxc6 Nxc6 17. d4 Rfe8 18. Bb5 Re6 19. Nbd2 Bg6 20. Ng5 Re7 21. Bxc6 bxc6 22. Rac1 f6 {Baumann,W (2054)-Davidson,J (2096) ICCF 2009 0-1 (85)}) 11... Rfe8 (11... Rae8 12. Ng5 Qh6 13. Bxg4 Qxg5 (13... Nxe3 14. fxe3 Qxg5 15. h3 {1-0 (15) Wantoch-Rekowski,J (2246)-Abdelmoumen,A (2222) ICCF 2008} h5 16. Bf3 Rxe3+ {Moser,M-Lakudas,A ICCF 2010 1/2 (40)}) 14. Bf3 Re6 (14... Nxe3 15. fxe3 Rxe3+ 16. Kd1 Rd8 17. Ra2 Re6 18. Kc1 a6 19. Ba1 ( 19. h4 Qf4 20. h5 Nd4 21. Bxd4 Rxd4 22. Qb3 Rb6 23. Re1 Kf8 24. Qe3 Rc4+ 25. Rc2 Rxc2+ 26. Kxc2 Qa4+ 27. Kc1 Qc4+ 28. Nc3 Re6 29. Bxb7 Bxc3 30. Qxc3 Rxe1+ { Bäckström,M (2228)-Vegjeleki,A (2195) ICCF 2009 0-1 (40)}) 19... h6 20. Rf1 ( 20. Rd1 g6 21. Qa4 Ne5 22. Bxe5 Qxe5 23. Rb2 Rd4 24. Qc2 b5 25. Rb3 Red6 26. h3 Rc4 27. Nc3 c5 28. Kb1 b4 29. d4 Qe6 30. Bg4 f5 31. Be2 Rxc3 {Heijnens,R (2291) -Groot,P (2290) ICCF 2020 0-1 (45)}) 20... Ne5 21. Be4 Qh4 22. g3 Qxh2 23. Bxe5 Rxe5 24. Qc4 Qh5 25. g4 Rc5 26. gxh5 {Rooms,T (2343)-Balshaw,A (2275) ICCF 2011 1/2 (28)}) 15. O-O Rd8 16. Nc3 Bxc3 17. dxc3 Nb6 18. c4 Na5 19. c5 Nd7 20. Rad1 Nc6 21. Be4 Rh6 22. Qc3 Rf6 23. f4 {Daatselaar,J (2233)-Walker,J (1968) ICCF 2006 1-0 (61)}) 12. Ng5 (12. Qc4 Bf5 (12... Bh5 13. O-O Rad8 14. Rc1 Re6 15. Nc3 Bxf3 16. Bxf3 Nb6 17. Qb5 a6 18. Qb3 Ne5 19. Bxb7 Ng4 20. g3 Qd3 21. Rf1 Nc4 22. Qa4 Bb6 {1/2 (22) Böhnke,H (2049)-Kuula,R ICCF 2009}) 13. O-O a6 ( 13... b5 14. Qh4 a6 15. Nc3 Nb6 16. Rfc1 h6 17. Qg3 Qxg3 18. hxg3 Ne7 19. d4 Rac8 20. Nd2 Be6 21. Nde4 Nc4 22. Nd1 Bb6 23. Bc3 Nc6 24. Nd2 N6a5 25. Bxa5 { Böhnke,H (2038)-Karlsson,L (2390) ICCF 2010 1/2 (34)}) 14. Nd4 Nxd4 15. Qxd4 f6 16. Bf3 c6 17. Nc3 Rad8 18. Nxd5 cxd5 19. Qa4 Bc7 20. g3 b5 21. Qb4 Be4 22. Bg4 Bd3 23. Rfc1 Bb6 {Böhnke,H (2144)-Kinchant,K (2273) ICCF 2011 1/2}) 12... Qh6 13. Bxg4 Nxe3 (13... Qxg5 14. Qf5 Qxf5 15. Bxf5 Ne5 (15... Rad8 16. O-O g6 17. Bc2 Ne5 18. Ra2 c5 19. d4 cxd4 20. Bxd4 Nc6 21. Ba1 Bc7 22. Ba4 Be5 23. Bxc6 bxc6 24. Nd2 Nb6 25. Nf3 Bxa1 {1/2 (25) Wantoch-Rekowski,J (2305)-Woznica,M (2320) ICCF 2006}) 16. Ra2 g6 17. Be4 Rad8 18. O-O f5 19. Bc2 Kf8 20. d4 Ng4 21. Ba1 Rd7 22. Bd3 Ngf6 23. g3 Ne4 24. Re2 c6 25. Bb2 {Wantoch-Rekowski,J (2224)-Jong,J (2163) ICCF 2009 1/2 (34)}) 14. fxe3 Qxg5 15. h3 (15. Bf3 Qxe3+ 16. Kd1 Rad8 17. Kc1 Qg5 18. Ra2 Re6 19. Rf1 Bb6 20. Bc3 Qb5 21. Rh1 Ne5 22. Bxe5 Qxe5 23. Bxb7 Bd4 24. Bf3 Rb8 25. Nc3 Reb6 26. Nd5 Rb5 {Daatselaar,J (2074)-Vegjeleki,A (2145) ICCF 2008 1-0 (43)}) 15... Qxe3+ 16. Kd1 { Wantoch-Rekowski,J (2173)-Kabanevsky,A (1933) ICCF 2010 1/2 (43)} Rad8 17. Kc1 Qf4 18. Ra2 Rd6 19. Bf3 a6 20. Rd1 h6 21. Ba1 Ree6 22. Rf1 Nd4 23. Bxd4 Rxd4 24. g3 Qg5 25. Rb2 b5 26. Rb3 Re5 27. h4 Qd8 28. Bd1 {Morley,P (2270)-Mostowik, D (2210) ICCF 2008 1-0 (48)}) (4... d5 5. cxd5 (5. e3 Nc6 (5... Be6 6. Nf3 Nc6 (6... dxc4 7. Qc2 Nc6 8. Bxc4 Nxe5 9. Nxe5 Bd6 10. Nf3 Bxc4 11. Qxc4 c6 12. O-O O-O 13. Nc3 Qd7 14. a4 a5 15. Rfd1 Rfd8 16. d4 Bb4 17. h3 {Fagerbekk,E (2296) -Cardoso García,S (2278) ICCF 2017 1/2}) 7. Bb2 dxc4 8. Qc2 Qd5 9. a3 Bd6 10. Nc3 Qh5 11. Be2 O-O 12. Ne4 Nxe4 13. Qxe4 Bd5 14. Qb1 Rfe8 15. Bc3 a6 16. a4 Rab8 17. a5 {Frydendal,O (1843)-Sartori,D (1936) ICCF 2010 0-1}) (5... Bg4 6. Qa4+ Nc6 7. a3 Be7 8. cxd5 Qxd5 9. Bxc7 O-O 10. Nc3 Qd7 11. h3 Bh5 12. g4 Bg6 13. Bg3 Rfd8 14. Nf3 a6 {1/2 (14) Achermann,J (2149)-Peiro Fernández,J (2175) ICCF 2018}) (5... Kf8 6. Nf3 Nbd7 7. Bb2 c6 8. cxd5 Nxd5 9. a3 Bd6 10. Bxg7+ Kxg7 11. Be2 Qf6 12. Ra2 Nc5 13. O-O Rg8 14. a4 Ne4 15. g3 Bh3 16. Re1 Kf8 { Neumann,F (1522)-Serrano Zaldivar,A ICCF 2020 0-1}) 6. Bc3 Bxc3 7. Nxc3 d4 8. exd4 Nxd4 9. Nf3 Qe7+ 10. Be2 Nxf3+ 11. gxf3 Be6 12. O-O O-O-O 13. d4 Bh3 14. Re1 Nd5 15. Ne4 Nf4 16. Qd2 Qh4 {Stasiak,W (1582)-Wydornik,R (2181) ICCF 2019 0-1}) (5. Qa4+ Nc6 6. cxd5 Qxd5 7. Bxf6 gxf6 8. Nc3 Bxc3 9. dxc3 Be6 10. e3 O-O-O 11. Nf3 Rhg8 12. c4 Qe4 13. Nd2 Rxd2 14. Kxd2 Rd8+ 15. Kc1 Qe5 16. Rb1 Qc3+ {Walker,J (1932)-Moskvichev,V (2199) ICCF 2011 0-1 (26)}) (5. Bg3 d4 6. a3 Ba5 7. Qa4+ Nc6 8. Nf3 Bd7 9. Ne5 Bb6 10. c5 Bxc5 11. Nxf7 Kxf7 12. Qc4+ Kg6 13. Qxc5 Bf5 14. f3 Re8 15. Kf2 Re6 16. e4 Bxe4 {Degterev,P (2545)-Saenko,O (2508) ICCF 2008 0-1 (51)}) 5... Qxd5 (5... O-O 6. a3 Bd6 (6... Nbd7 7. Bb2 Ba5 8. Qc2 b6 9. e3 Bb7 10. Nf3 Bxd5 11. Nc3 Bb7 12. Be2 c5 13. O-O a6 14. a4 Qe7 15. Rfd1 Rfe8 16. d4 cxd4 17. Rxd4 Bb4 18. Bc4 {Ilzig,G (2265)-Andersen,J (2221) ICCF 2017 1/2 (30)}) 7. Bxf6 Qxf6 8. Nc3 Re8 9. e3 Nd7 10. d4 Qe7 11. Bd3 Bxa3 12. Qc2 Nf6 13. Nge2 Bb4 14. O-O Bg4 15. Na2 Bxe2 16. Qxe2 Nxd5 17. Qc2 {Wantoch-Rekowski,J (2305)-Nenciulescu,S (2166) ICCF 2006 1-0 (35)}) 6. Bxf6 gxf6 7. a3 Ba5 8. Nc3 (8. e3 Nc6 9. Nc3 Bxc3 10. dxc3 Qc5 11. Ne2 Bf5 12. Qd2 Ne5 13. Nf4 Rd8 14. Qb2 O-O 15. Be2 Nd3+ 16. Bxd3 Bxd3 17. O-O-O Be4 18. Qb3 b6 19. Rxd8 Rxd8 {Nicotera,A-Sartori,D (1956) ICCF 2011 1/2 (43)}) 8... Qc5 9. Rc1 Nc6 10. e3 Bf5 11. Nb5 Qd5 12. Nc3 Qd6 13. Nb5 Qd7 14. Nf3 O-O-O 15. Nfd4 Nxd4 16. Nxd4 {Degterev,P (2475)-Mirás García,E (2484) ICCF 2009 1/2 (37)} ) (4... d6 5. Bb2 Nc6 6. e3 O-O 7. Nf3 Bg4 (7... Bf5 8. Be2 Qe7 9. O-O Ne5 10. Nd4 Bg4 11. Bxg4 Nfxg4 12. f4 Nd3 13. Nf5 Qe6 14. Qxg4 g6 15. Nh6# {1-0 (15) Achermann,J (2156)-Allmen,C ICCF 2018}) (7... d5 8. cxd5 Nxd5 9. a3 Ba5 10. Be2 Nf6 11. Qc2 {1-0 (11) Fagerbekk,E (2220)-Kayaalp,L (1826) ICCF 2010}) (7... Ne4 8. Be2 Be6 9. O-O Ne5 10. Nxe5 dxe5 11. d3 Ng5 12. Bxe5 Qe8 13. Bxc7 Qc6 14. Bf4 Nh3+ 15. gxh3 Bxh3 16. Bf3 Qg6+ 17. Bg3 {Jastrzebska,K-Räisänen,T (1566) ICCF 2012 1/2 (59)}) (7... Ba5 8. Be2 Qe7 9. O-O Be6 10. d4 {1-0 (10) Bedbur,H (1879)-Moen,K (1733) ICCF 2016}) 8. Be2 Re8 9. O-O Qe7 (9... Ne4 10. a3 Ba5 11. d3 Ng5 12. Nbd2 Nxf3+ 13. Nxf3 Ne5 14. h3 Nxf3+ 15. Bxf3 Bxf3 16. Qxf3 c6 17. Qg3 f6 18. d4 d5 19. Rac1 Bc7 20. Qf3 Qd6 21. Rfd1 {Frydendal,O (1603)-Moen,K (1671) ICCF 2015 1/2 (32)}) 10. d3 (10. Ne1 Bxe2 11. Qxe2 Rad8 12. Nd3 Ba5 13. Bc3 d5 14. cxd5 Nxd5 15. Bxa5 Nxa5 16. Nc3 Nxc3 17. dxc3 Qf6 18. Rfd1 Rd6 19. Rac1 b6 20. Nb2 Rxd1+ 21. Qxd1 h6 {Jamieson,I (1987)-Cumming,D (2288) ICCF 2011 0-1 (36)}) 10... Rad8 11. a3 Ba5 12. Nbd2 a6 13. Nb3 Bb6 14. Nfd4 Bxe2 15. Qxe2 Ne5 16. Nf5 {Cornacchini,G (1796)-Fernandez Gonzales,G (1890) ICCF 2011 0-1}) (4... b6 5. Nf3 O-O 6. a3 Be7 7. e3 Bb7 8. Be2 d5 9. Qc2 c5 10. cxd5 Qxd5 11. Nc3 Qd7 12. Ng5 g6 13. Bf3 Nc6 14. Bf4 h6 15. Nge4 Nxe4 16. Bxe4 {Waud,D (1965)-Wakeham,M (2130) ICCF 2019 0-1 (36)}) 5. Nf3 (5. a3 Ba5 (5... Be7 6. e3 (6. Nf3 d5 7. cxd5 Nxd5 8. e3 Bf5 9. Nc3 (9. Be2 c5 10. Qb3 Nc6 11. Nc3 Nxe5 12. Nxd5 Bd6 13. Qxb7 Rb8 14. Qa6 Re8 15. Nc3 Rb2 16. Rd1 Bc2 17. Na4 Rb8 18. Rc1 Re6 19. Nc3 Rb6 20. Qxa7 Nd3+ {Muri,H (2355)-Gudzovaty,Y ICCF 2012 0-1 (42) }) 9... Nc6 10. Nxd5 Qxd5 11. Bc3 Rad8 12. Be2 Rd6 13. O-O Rh6 14. Re1 Rd8 15. d4 Be4 16. Bd3 Rg6 17. Bxe4 Qxe4 {Böhnke,H (2034)-Siemes,R (2308) ICCF 2010 1/ 2 (34)}) 6... d5 7. cxd5 Nxd5 8. Qc2 (8. Bb2 b6 9. Qc2 Bf6 10. Be2 Bb7 11. Nf3 c5 12. O-O Nc6 13. d3 Re8 14. Re1 Rc8 15. Nbd2 Bxb2 16. Qxb2 Qf6 {Lykke,H (2443)-Slawinski,T (2404) ICCF 2019 1/2}) 8... c5 (8... Bf6 9. Nf3 Nc6 10. Bb2 Bf5 11. Qxf5 Bxb2 12. Ra2 g6 13. Qc2 Bg7 14. Be2 Rc8 15. Qc5 Qd6 16. Rc2 Qxc5 17. Rxc5 Rfd8 18. O-O Bf8 19. Rc2 Na5 20. Nc3 {Degterev,P (2475)-Lubas,J (2437) ICCF 2009 1/2}) 9. Bb2 Nc6 10. Nc3 Bf6 11. Nxd5 Bxb2 12. Qxb2 Qxd5 13. Nf3 b6 14. Be2 Bb7 15. O-O Rad8 16. Rac1 Rd6 17. Rfd1 {Degterev,P (2475)-Goncharenko, G (2491) ICCF 2009 0-1 (80)}) (5... Nc6 6. Bb2 Be7 (6... Ba5 7. Nc3 d5 8. cxd5 Nxd5 9. Nf3 Nxc3 10. Bxc3 Bxc3 11. dxc3 Qf6 12. Qc2 Bf5 13. Qb2 Rad8 14. e3 Ne5 15. Nxe5 Qxe5 16. Be2 Rd6 17. O-O Rh6 18. g3 {Bonatti,A (2024)-Walker,J (1968) ICCF 2006 0-1 (41)}) 7. Nf3 d5 8. e3 Na5 (8... dxc4 9. Bxc4 Na5 10. Ba2 (10. Be2 c5 11. O-O Be6 12. Nc3 a6 13. a4 Rc8 (13... h6 14. Qc2 Rc8 15. d3 Nb3 16. Rab1 Re8 17. Ne4 {Müller,D (2375)-Vaughan,J (2115) ICCF 2016 1/2 (54)}) 14. d3 Qc7 15. Qc2 Rfd8 16. h3 b6 17. Ba3 Nd5 18. Nxd5 Bxd5 19. Bb2 c4 20. dxc4 Nxc4 21. Bd4 Qb7 {Muri,H (2400)-Hauenstein,H (2437) ICCF 2009 1/2 (39)}) 10... c5 11. Qc2 (11. O-O Bf5 12. d4 c4 13. Ne5 b5 14. Nc3 h6 15. Qf3 Bh7 16. Rfe1 a6 17. h3 Qb6 18. Rad1 Rae8 19. e4 Qc7 20. Bb1 Nb3 21. Ng4 Nxg4 22. Qxg4 Qc8 { Ilzig,G (2264)-Narciso,M (2203) ICCF 2017 1-0 (41)}) 11... b6 12. Nc3 Ba6 13. Ne2 Rc8 14. Nf4 Bd6 15. Ne2 c4 16. Bb1 Re8 17. Bxf6 Qxf6 18. Qxh7+ Kf8 19. Ra2 g6 20. h4 {Fagerbekk,E (2189)-Moskalyov,V (2243) ICCF 2013 1/2}) (8... Bg4 9. cxd5 Qxd5 10. Be2 (10. Nc3 Qe6 11. Be2 Rfd8 12. O-O a6 13. d4 Bxf3 14. Bxf3 Nd5 15. Nxd5 {1-0 (15) Schmidt,K (2132)-Gronemann,J (2203) ICCF 2010}) 10... Rad8 11. O-O (11. d4 Ne4 12. Nc3 Nxc3 13. Bxc3 Rd6 14. Rb1 b6 15. Rb5 Qe6 16. O-O Rfd8 17. Qc2 a6 18. Rbb1 Qd5 19. h3 {Kural,A (2194)-Taner,H (2061) ICCF 2010 1/ 2}) 11... Rfe8 (11... Na5 12. h3 Be6 13. Nd4 Nc4 14. Qc2 Nxb2 15. Qxb2 Bc8 16. Nf3 Ne4 17. Nc3 Nxc3 18. Qxc3 Qc5 19. Qxc5 Bxc5 20. d4 Bd6 21. a4 {1/2 (21) Böhnke,H (2089)-Pareschi,R (2016) ICCF 2009}) 12. h3 Bh5 13. d4 Na5 14. Nbd2 c5 15. Qa4 cxd4 16. Bxd4 Nc6 17. Bc4 Qd7 18. Bb5 a6 19. Bxc6 Qxc6 20. Qxc6 { Degterev,P (2545)-Herasymchuk,Y (2279) ICCF 2008 1/2 (61)}) 9. cxd5 Qxd5 10. Be2 Be6 11. Nc3 Qd7 12. O-O c5 13. d3 Rfd8 14. Qe1 Nc6 15. Rd1 Qc7 16. h3 Rd7 17. Nd2 {Degterev,P (2475)-Viard,D (2403) ICCF 2010 1/2 (27)}) 6. e3 (6. Nf3 Nc6 (6... d5 7. cxd5 Nxd5 8. e3 a6 (8... Bf5 9. Qb3 Nc6 (9... c6 10. Bd4 (10. Qb2 f6 11. Bg3 Qb6 12. Qa2 Nd7 13. Bc4 Nc5 14. O-O Kh8 15. Nd4 Bg6 16. Bd6 Rfc8 17. Bxc5 Qxc5 18. Rc1 Qd6 19. Nb3 Bd8 20. d4 a5 21. g3 Be7 {Kural,A (2397) -Hassim,U (2338) ICCF 2018 1/2 (29)}) 10... Nd7 11. Be2 Re8 12. O-O Nf4 13. exf4 Rxe2 14. Be3 Rxe3 15. dxe3 Nc5 16. Qa2 Qf6 17. Nd4 Bg6 18. Nd2 Bc3 19. Rad1 {Stapinski,R (1731)-Haase,F (1798) ICCF 2020 1-0 (90)}) (9... Re8 10. Nc3 Nd7 11. Qxd5 c6 12. Bc7 cxd5 13. Bxd8 Bxc3 14. dxc3 Raxd8 15. Nd4 Be4 16. f3 Bg6 17. Kd2 Nc5 18. a4 a5 19. Ra2 Re7 20. Be2 h5 21. Rd1 {Buczinski,H (2041) -Carrillo Pujol,J (1954) ICCF 2020 1/2 (45)}) 10. Bb2 (10. Bg3 Bb6 11. Nc3 Nxc3 12. Qxc3 Re8 13. Be2 Qd7 14. Rc1 Rad8 15. O-O Ne7 16. Rfd1 Nd5 17. Qb3 Be6 18. Qb2 f6 19. d4 c6 20. e4 Ne7 21. a4 Kh8 {Jones,I (2083)-Jones,B (2157) ICCF 2015 1-0 (32)}) 10... Qd7 11. Be2 Rfe8 12. Nc3 Be6 13. Qa4 Nxc3 14. dxc3 Bb6 15. Rd1 Qe7 16. O-O Rad8 17. c4 f6 18. Qc2 Kh8 19. Bd3 Bg8 20. Rfe1 {Ilzig,G (2103)-Hrdý,T (2084) ICCF 2016 1/2 (35)}) 9. Qc2 Nd7 10. Bb2 Qe7 11. Bc4 N7f6 12. O-O b5 13. Be2 Bb7 14. a4 b4 15. d4 Rfd8 16. Ne5 Bb6 17. Nd2 c5 18. Ndc4 { Ilzig,G (2265)-Marquardt,G (2201) ICCF 2017 1/2 (44)}) (6... c6 7. e3 Re8 8. Be2 d5 9. cxd5 cxd5 10. O-O Nc6 11. Bb2 Bf5 12. d3 Rc8 13. Nbd2 Qd6 14. Rc1 Bb6 15. h3 Nd7 16. d4 h6 17. Qb3 Rc7 18. Rfd1 {Ilzig,G-Gavrijski,D (2134) ICCF 2016 1-0 (55)}) 7. Bb2 Ne4 8. e3 d5 9. cxd5 (9. Qc2 Re8 (9... Bf5 10. Bd3 Re8 11. O-O dxc4 12. Bxc4 Nd6 13. Bd3 Bxd3 14. Qxd3 Qd7 15. Qc2 Re6 16. d4 Rg6 17. Nbd2 Re8 18. Bc3 Qg4 19. g3 Bxc3 20. Qxc3 h5 21. Qd3 {Muri,H (2355)-Cottegnie, F (2415) ICCF 2012 1/2 (32)}) 10. cxd5 Qxd5 11. Nc3 Bxc3 12. Bxc3 Nxc3 13. Qxc3 Bg4 14. Be2 Ne5 15. Nxe5 Bxe2 16. Kxe2 Rxe5 17. Rab1 Rf5 18. f3 Rg5 19. Kf2 b6 20. d4 Qd6 {Muri,H (2355)-Bondi,A (2349) ICCF 2012 1/2 (30)}) (9. Nc3 Nxc3 10. Bxc3 Bxc3 11. dxc3 Qf6 12. Qb3 Be6 13. Nd4 dxc4 14. Qxb7 Nxd4 15. cxd4 c5 16. Be2 cxd4 17. exd4 Qxd4 18. O-O Rab8 19. Qf3 Rb3 20. Qh5 g6 {Vlak,J (2310) -Sheppard,B (2271) ICCF 2008 0-1 (28)}) (9. Be2 dxc4 10. Bxc4 Bg4 (10... Be6 11. Bxe6 fxe6 12. O-O Qd5 13. Bc3 (13. Nc3 Bxc3 14. Bxc3 Rad8 15. Rb1 b6 (15... Rd7 16. Qe2 b6 17. Rbc1 Rdf7 18. Kh1 Rd8 19. d4 e5 20. dxe5 Nxc3 21. Rxc3 Nxe5 22. Ng5 Rfd7 23. Qc2 Nd3 24. f4 h6 25. e4 Qd4 26. Ne6 Nf2+ 27. Kg1 {Muri,H (2400)-Hirr,R (2465) ICCF 2009 1/2 (43)}) 16. Rc1 e5 17. Bb4 Rf6 18. d3 Qxd3 19. Qxd3 Rxd3 20. Rc4 a5 21. Rxe4 axb4 22. axb4 Rb3 23. Ra1 h6 {1/2 (23) Muri, H (2400)-Jensen,E (2402) ICCF 2009}) (13. d4 Rad8 14. Nbd2 Nxd2 15. Nxd2 e5 16. Nf3 e4 17. Nd2 Bxd2 18. Qxd2 Ne5 19. Qc2 Nd3 20. Bc3 Rd6 21. Qa2 Qxa2 22. Rxa2 Rc6 23. Ba1 Rf5 24. h3 h5 {Muri,H (2335)-Antas,A (2358) ICCF 2014 1/2 (37)}) 13... Rad8 14. Bxa5 Nxa5 15. Nc3 Nxc3 16. dxc3 Nb3 17. Rb1 Nc5 18. Qxd5 exd5 19. Rfc1 b6 20. Rc2 a6 21. Rd1 b5 22. Ne5 {Muri,H (2410)-Santos Crespo,I (2448) ICCF 2008 1/2 (65)}) 11. O-O Ng5 12. Kh1 Nxf3 13. gxf3 Be6 14. Rg1 g6 15. Qc2 Bxc4 16. Qxc4 Re8 17. d4 Qf6 18. Rg3 Ne7 19. Bc3 Bxc3 20. Nxc3 Nf5 {Muri,H (2398)-Mayer,R (2477) ICCF 2009 1/2 (65)}) 9... Qxd5 10. Be2 Be6 (10... Bg4 11. O-O Rad8 12. h3 Be6 (12... Bc8 13. Qc2 (13. Nc3 Bxc3 14. Bxc3 Rd6 15. Qc2 Rg6 16. Nh4 Rh6 17. Bf3 Rxh4 18. d3 Nxc3 19. Bxd5 Nxd5 {Fagerbekk,E (2189)-Doren,D (2238) ICCF 2013 1/2 (27)}) 13... Ng5 14. Rc1 Bxh3 15. Nc3 Qf5 16. Qxf5 Bxf5 17. d4 Nxf3+ 18. Bxf3 Ne7 19. Na4 c6 20. Nc5 Bc8 21. a4 b6 22. Nd3 c5 23. Ba3 Rfe8 24. Ne5 {Ilzig,G-De Smet,K (2208) ICCF 2016 1/2 (44)}) 13. d4 Rd6 14. Kh2 Bf5 {1/2 (14) Muri,H (2355)-Harvey,D (2353) ICCF 2012}) (10... Nc5 11. O-O Bf5 12. Nc3 Qb3 13. Qxb3 Nxb3 14. Rad1 (14. Rae1 Nc5 15. Ba1 Bd3 16. Bxd3 Nxd3 17. Rb1 Bxc3 18. Bxc3 {1/2 (18) Fagerbekk,E (2215)-Jimena Bonillo,S (1905) ICCF 2013}) 14... Bc2 15. d4 Ne7 16. Rde1 c5 17. dxc5 Rfd8 18. Nd4 Nxd4 19. exd4 Rxd4 20. Bf3 Nc6 21. Re3 Rd2 22. Nd5 {Böhnke,H (2164)-Kögeler,A (2102) ICCF 2011 1-0 (64)}) 11. O-O Rad8 12. d4 f5 13. Qc2 Qd6 14. Nbd2 Nxd2 15. Nxd2 Bd5 16. Bc3 Rf7 17. Bc4 b6 {Ilzig,G (2265)-Popov,V (2075) ICCF 2017 1-0 (54)}) 6... Nc6 (6... d5 7. Nf3 (7. Qc2 Nc6 8. Bb2 d4 9. Nf3 Re8 10. Be2 dxe3 11. fxe3 Rxe3 12. O-O Rxe2 13. Nc3 Nd4 14. Nxd4 Qxd4+ 15. Kh1 Qxc4 16. Rae1 Rxe1 17. Rxe1 Bd7 {Wilshusen,H (1359)-Rawlings,A (2375) ICCF 2019 0-1}) 7... Nc6 8. Bc3 Bxc3 9. Nxc3 d4 10. Nxd4 Nxd4 11. exd4 Qxd4 12. Be2 Bf5 13. O-O c6 14. Qb3 Rfe8 15. d3 Nd7 16. Ne4 Bxe4 17. dxe4 Nc5 18. Qc2 {Slupski,M-Balshaw,A (2275) ICCF 2011 0-1 (35)}) 7. Bb2 d5 8. cxd5 (8. Nf3 Qd6 9. Bc3 (9. Nc3 Rd8 10. Qc2 dxc4 11. Bxc4 Bg4 12. Be2 Bxf3 13. gxf3 Ne5 14. d4 Ng6 15. O-O c5 16. Ne4 Nxe4 17. Qxe4 Bc7 18. f4 cxd4 19. Rad1 {Benassi,A (2293)-Jurco,J (2148) ICCF 2012 1/2 (26)}) 9... Bf5 10. Bxa5 Nxa5 11. cxd5 Nxd5 12. d3 Rfe8 13. d4 c5 14. Bb5 Nxe3 15. fxe3 Rxe3+ 16. Kf2 cxd4 17. Nbd2 Qb6 18. a4 d3 19. Nc4 Re2+ {Di Pietro,R (1665) -Fedeli,L (2137) ICCF 2009 0-1}) 8... Qxd5 9. Bxf6 gxf6 10. Nf3 Kh8 11. Nc3 Bxc3 12. dxc3 Qa5 (12... Qc5 13. Qd2 Rg8 14. c4 Be6 15. Qc3 Qa5 16. Rc1 Rad8 17. Nd2 Qxc3 18. Rxc3 Ne5 19. f4 Nd7 20. Nb3 b6 21. Rg1 c5 22. Nd2 f5 23. Bd3 Nf6 24. Bc2 {Degterev,P (2475)-Mateka,P (2495) ICCF 2010 1/2 (45)}) 13. Qb3 ( 13. Qd2 Be6 14. c4 Rfd8 15. Qxa5 Nxa5 16. Rc1 c5 17. Nd2 f5 18. Be2 Rd6 19. f4 Rad8 20. Rc2 Kg7 21. Rg1 Kf8 22. h3 b6 23. g4 Bd7 24. g5 Bc6 {Wantoch-Rekowski, J (2224)-Williams,T (2155) ICCF 2009 0-1 (71)}) 13... Rg8 14. Rd1 Be6 15. Qb2 Bd5 16. h4 Rad8 {Degterev,P (2475)-Jandek,S (2484) ICCF 2009 0-1 (76)}) (5. e3 d5 (5... d6 6. Bb2 Nbd7 7. Nf3 c6 (7... Nc5 8. Be2 Bf5 9. O-O c6 10. Nc3 Rb8 11. Na4 Ncd7 12. Rc1 Re8 13. a3 Ba5 14. Nh4 Be6 15. Nf3 b5 16. cxb5 cxb5 17. Nc3 Ne5 18. Nd4 Bd7 19. Ba1 {Daatselaar,J (2200)-Hospers,B (1993) ICCF 2020 1/ 2 (41)}) 8. a3 Ba5 9. Be2 Re8 10. O-O Ne5 11. d3 Nxf3+ 12. Bxf3 Nd7 13. d4 Nb6 14. Qc2 Be6 15. Be2 d5 16. cxd5 Nxd5 17. Bd3 {Böhnke,H (2137)-Aymard,M (1904) ICCF 2006 1/2 (68)}) (5... Re8 6. Bb2 d5 7. Be2 dxc4 8. Bxc4 c5 9. Nf3 Bg4 10. Qb3 Qe7 11. Ne5 Be6 12. a3 Ba5 13. Bxe6 Qxe6 14. Qxb7 Nbd7 15. Nxd7 Nxd7 16. Bc3 Rab8 17. Qf3 {Ringsborg,A (2280)-Vang,F ICCF 2020 1/2}) 6. cxd5 (6. Bb2 Be6 (6... Bf5 7. Nf3 Nbd7 8. Be2 dxc4 9. Bxc4 Nb6 10. Be2 c5 11. O-O Rc8 12. Qb3 Re8 13. Rc1 (13. a3 Ba5 14. Bc3 Bxc3 15. Nxc3 Ne4 16. Nxe4 Bxe4 17. a4 Bd5 18. Qc3 Nd7 19. Rfb1 {Benassi,A (2293)-Bobârnac,D (2265) ICCF 2012 1/2 (25)}) 13... a6 14. a4 h6 15. Na3 Ne4 16. d3 Be6 17. Qc2 Nd6 18. Rd1 {Degterev,P (2530)-Cid Gallego,S (2074) ICCF 2007 0-1 (55)}) 7. a3 Ba5 8. Nf3 c5 9. Be2 dxc4 10. O-O b5 11. Qc2 Nbd7 12. Nc3 a6 13. Ne4 Nxe4 14. d3 c3 15. dxe4 cxb2 16. Qxb2 Qf6 { 0-1 (16) Frydendal,O (1554)-Pardoe,I (1687) ICCF 2018}) (6. Nc3 Nbd7 7. Bg3 dxc4 8. Bxc4 Nb6 9. Bb3 Re8 10. Nge2 Bg4 11. Qc2 a5 12. a3 Bd6 13. f3 Be6 14. O-O Bxg3 15. Nxg3 Bxb3 16. Qxb3 Qxd2 17. Nce4 Nxe4 {Krüger,J-Cottarelli,F (2185) ICCF 2006 1/2 (33)}) (6. Bc3 Bxc3 7. Nxc3 d4 8. exd4 Nc6 9. d5 Re8+ 10. Nge2 Ne5 11. d3 Bf5 12. f4 Nxd3+ 13. Kd2 Nf2 14. Qe1 Nxh1 15. g3 Qe7 16. Bg2 Qe3+ 17. Kd1 Nf2+ {Stasiak,W (1543)-Szulc,S (2078) ICCF 2020 0-1}) 6... Nxd5 7. Nf3 (7. Be2 Re8 8. Bb2 Bf5 9. Nf3 Nd7 10. O-O c6 (10... Nc5 11. a3 (11. d4 Ne4 12. Qb3 c6 13. Ba3 a5 14. Bxb4 axb4 15. Bc4 Qd6 16. Rc1 Nxf2 17. Kxf2 Rxe3 18. Qd1 Qf4 19. Bxd5 Rd3 20. Bxf7+ Kxf7 21. Nbd2 Qe3+ 22. Kg3 Qxd4 {Labbe,R (2134) -Willigen,J (2398) ICCF 2005 1-0 (53)}) (11. Nd4 Bg6 12. a3 Ba5 13. Nb3 Nxb3 14. Qxb3 c6 15. d4 Qh4 16. Bf3 Rad8 17. Bc1 Bf5 18. Bd2 Bb6 19. Nc3 Nxc3 20. Bxc3 Rd6 21. g3 Qh3 22. Bg2 Qh5 {Cooper,R (2036)-Jefferson,N (2128) ICCF 2013 0-1 (49)}) 11... Ba5 12. Ne5 (12. Bd4 Ne6 13. Bb2 c6 14. d4 Rc8 15. Nbd2 Nef4 16. Bc4 b5 17. Bxd5 Nxd5 18. Nb3 Bc7 19. Nc5 Bg4 20. h3 Bh5 21. g4 Bg6 22. Ne5 Qe7 23. Nxg6 fxg6 {Akrill,R (2064)-Sherwood,A (2337) ICCF 2019 0-1 (34)}) 12... c6 13. d4 Nd7 14. Bd3 (14. Nc4 Bc7 15. Nc3 Nxc3 16. Bxc3 Qg5 17. Rc1 Rad8 18. f4 Qe7 {Fagerbekk,E (2215)-Legemaat,G (2233) ICCF 2013 1/2 (25)} 19. Qb3 Nb6 20. Bb4 Qe6 21. Ba5 Be4 22. Bf3 Bd5 23. Bxd5 Rxd5 24. Bxb6 axb6 25. a4 h6 26. Rfe1 b5 27. axb5 Rxb5 28. Qc3 Qe4 29. Nd2 Qe6 30. Nc4 c5 {Schmidt,K (2088) -Mikhailov,V (2351) ICCF 2019 1/2 (58)}) 14... Bxd3 15. Nxd3 Qg5 16. Qe2 Re6 17. Nd2 Bc7 18. Nf3 Qh5 19. Rfe1 Rae8 20. h3 N7f6 21. Nfe5 Qxe2 22. Rxe2 { Heß,H (2316)-Depasse,J (2321) ICCF 2014 1/2 (42)}) (10... N7b6 11. Nc3 c6 12. Nd4 Bg6 13. a3 Nxc3 14. dxc3 Bd6 15. Nf3 Be4 16. Qd4 c5 17. Qd1 Qf6 18. Bd3 Rad8 19. Bxe4 Bxh2+ 20. Nxh2 Rxd1 21. Rfxd1 Rxe4 22. Nf3 {Yeung,C (1642) -Vegjeleki,A (2145) ICCF 2008 0-1 (25)}) 11. a3 (11. d4 Qe7 12. a3 Ba5 13. Qa4 Bc7 14. Nc3 Nxc3 15. Bxc3 Nb6 16. Qb3 Nd5 17. Bb2 a5 18. Ne5 f6 19. Nd3 Kh8 20. Bc1 a4 21. Qb2 Qf7 22. Rd1 Qg6 {Fagerbekk,E (2220)-Vecek,M (2163) ICCF 2010 0-1 (62)}) (11. Na3 Qc7 (11... a5 12. Nc2 Bf8 13. Ncd4 Bg6 14. d3 a4 15. a3 h6 16. Re1 {1/2 (16) Skerlík,S (2234)-Goins,D (2221) ICCF 2019}) (11... Rc8 12. Nc4 a6 13. Nd4 Bg6 14. f4 f6 15. a3 Bc5 16. a4 b5 17. Na3 Bf7 18. Nac2 N7b6 { Heß,H (2314)-Weldon,D (2373) ICCF 2016 1/2 (40)}) 12. Rc1 h6 13. Nb5 Qa5 14. Nbd4 Bh7 15. a3 {1/2 (15) Dam,J (2052)-Taylor,B (2001) ICCF 2020}) (11. Nd4 Bg6 12. a3 (12. f4 Be4 13. a3 Ba5 14. Nb3 Qb6 15. Bc4 Bxd2 16. N1xd2 Nxe3 17. Bd4 Nxd1 18. Bxb6 Nxb6 19. Rfxd1 Nxc4 20. Nxc4 Bc2 21. Nbd2 Bxd1 22. Rxd1 Rad8 { Tagoc,C-Souissi,N ICCF 2020 0-1 (37)}) 12... Bd6 13. Nc3 N7f6 14. Nxd5 Nxd5 15. Qb3 a5 16. a4 Nb4 17. h3 Be5 18. Bc4 Rb8 19. Rac1 Bf6 20. f4 b5 21. axb5 cxb5 22. Be2 Be4 {Muliuolis,V (1933)-Dzenis,J (2255) ICCF 2020 0-1 (60)}) (11. Nc3 Nxc3 12. dxc3 Bf8 13. c4 Nc5 14. Nd4 Be4 15. Bf3 Qg5 16. Bxe4 Nxe4 17. Qc2 Bd6 18. Rad1 Rad8 19. Nf3 Qe7 20. Rd4 b6 21. Rfd1 a6 22. R4d3 f6 {Heß,H (2358) -Belmar Juaranz,C (2151) ICCF 2005 1/2 (40)}) (11. d3 Nc5 12. Nd4 Bg6 13. a3 Ba5 14. Qc2 Nxe3 15. fxe3 Rxe3 16. Nf5 Bxf5 17. Rxf5 Nxd3 18. Bxd3 Rxd3 19. Rf1 Qd6 20. Qc4 Qg6 21. Ra2 b5 22. Qf4 Re8 {Cottarelli,F (1891)-Weldon,D ICCF 2013 0-1}) 11... Bd6 (11... Ba5 12. Nc3 Nxc3 13. Bxc3 Bc7 14. d4 Nb6 15. Bd3 Bxd3 16. Qxd3 Qd5 17. a4 Nc4 18. Rfe1 Nd6 19. Nd2 {Gosling,B-Law,S (1920) ICCF 2017 1-0 (43)}) 12. Nc3 Nxc3 13. Bxc3 Qc7 14. h3 h6 15. d4 a5 16. a4 Nf6 17. Bd3 Bxd3 18. Qxd3 b5 {Heß,H (2319)-Grabner,H (2329) ICCF 2019 1/2 (32)}) 7... Re8 ( 7... Be7 8. Be2 c5 9. O-O (9. Nc3 Nc6 10. Nxd5 Qxd5 11. Bc3 Nb4 12. Bxb4 cxb4 13. O-O Bf5 14. Nd4 Be4 15. f3 Bg6 16. Qb3 Qd7 17. f4 Be4 18. Bf3 Bxf3 19. Nxf3 a5 20. Rac1 a4 {Heß,H (2317)-Berza,S (2341) ICCF 2018 0-1 (63)}) 9... Nc6 10. Bb2 Bf5 (10... Bf6 11. d4 cxd4 12. Nxd4 Qb6 13. Qd2 Nxd4 14. Bxd4 Bxd4 15. exd4 Be6 16. Na3 Rac8 17. Nc4 Qc7 18. Rfc1 Qf4 19. Ne3 b6 20. Rxc8 Rxc8 21. Bf3 h6 22. Re1 {Böhnke,H (2137)-Pekand,B ICCF 2006 1-0 (25)}) 11. Nc3 (11. a3 Qb6 12. Qc1 Na5 13. Bd1 Be4 14. Nc3 Nxc3 15. Bxc3 Nb3 16. Bxb3 Qxb3 17. Ne5 b6 18. f3 Bb7 19. e4 Rad8 20. Ng4 Bg5 21. Rb1 Qa2 22. Rf2 h5 {Waud,D (1934)-Almarza Mato, C (2169) ICCF 2020 0-1 (30)}) (11. d4 Bf6 (11... Qb6 12. Qb3 Bf6 13. Nc3 Nxc3 14. Bxc3 Rfd8 15. Qxb6 axb6 16. Rfd1 {Skerlík,S (2234)-Doronkin,S (2201) ICCF 2019 1/2 (30)}) (11... cxd4 12. Nxd4 Nxd4 13. Bxd4 Rc8 14. Bg4 Bxg4 15. Qxg4 Bf6 16. Bxf6 Qxf6 17. Nd2 b6 18. Rfd1 b5 19. Qf3 {1/2 (19) Skerlík,S (2241) -Romero,P (2133) ICCF 2017}) 12. Nc3 Nxc3 13. Bxc3 Rc8 14. Re1 Be4 15. Qa4 cxd4 16. Nxd4 Nxd4 17. Bxd4 Bxd4 18. Qxd4 Qxd4 19. exd4 Bd5 20. a4 Rfd8 21. a5 Kf8 22. h3 h6 {Wantoch-Rekowski,J (2246)-Buhmann,T (2219) ICCF 2008 1/2 (35)}) 11... Bf6 (11... Ndb4 12. e4 Be6 13. d3 Bf6 14. Qd2 Nd4 15. Nxd4 Bxd4 16. Rab1 Qd7 17. a3 Nc6 18. Kh1 Rad8 19. f4 f6 20. Rfd1 Bb3 21. Rf1 Bf7 22. Bf3 Rfe8 23. Rfd1 {Heß,H (2328)-Kahl,F (2470) ICCF 2013 0-1 (75)}) 12. a3 Re8 13. Qb3 Nb6 14. Na4 Be6 15. Bxf6 Qxf6 16. Qc2 Nxa4 17. Qxa4 Bd5 18. Rac1 b6 19. d3 { Schulz,B (1756)-Brisson,P (2090) ICCF 2013 0-1 (31)}) (7... c5 8. Be2 (8. Bc4 Nc6 9. O-O Nxe5 10. Nxe5 Be6 11. Qc2 Qd6 12. f4 Nxf4 13. Nxf7 Rxf7 14. Rxf4 Rxf4 15. Bxe6+ Qxe6 16. a3 Raf8 17. Nc3 Bxc3 18. Qxc3 Rf2 {Thomsen,J (1531) -Bourgault,J (1850) ICCF 2019 0-1}) 8... Nc6 9. Bb2 (9. O-O Nxe5 10. Nxe5 Qe7 11. f4 Be6 12. Kh1 Rfd8 13. Qc2 Rac8 14. f5 Bd7 15. Nxd7 Rxd7 16. a3 Ba5 17. Qa4 Qd8 18. e4 Nf6 19. e5 Rd4 20. Qe8+ Nxe8 {Ylönen,O (2452)-Ivanov,V (2255) ICCF 2020 1-0}) 9... Bf5 10. O-O (10. Nc3 Bxc3 (10... Nxc3 11. dxc3 Ba5 12. O-O Qe7 (12... Bc7 13. Qb3 Qe7 14. Rad1 Rad8 15. c4 Rfe8 16. g3 Na5 17. Qa3 Be6 18. Qa4 Bd7 19. Qc2 Nc6 20. Bc3 Ba5 21. Bb2 f6 22. a3 Qf7 23. Bd3 Qh5 24. Be4 { Gavrijski,D (2173)-Cottarelli,F (2106) ICCF 2008 1/2 (39)}) 13. Qb3 Rad8 14. Rfd1 Bc7 15. c4 Na5 16. Qa4 h6 17. Bc3 Nc6 18. Qb5 a6 19. Qb2 f6 20. Rac1 Rxd1+ 21. Rxd1 Rd8 22. Rd2 {Degterev,P (2545)-Tinture,L (2455) ICCF 2007 1/2 (39)}) 11. dxc3 Nf6 12. O-O Ne4 13. Qb3 Na5 14. Qa3 b6 15. Rfd1 Qe7 16. c4 Rad8 17. Bc3 Nxc3 18. Qxc3 Be6 19. Rac1 Rxd1+ 20. Rxd1 f6 21. h3 Qf7 {Jiménez Ariza,J (2365)-Menéndez Rodríguez,G (2374) ICCF 2020 1/2 (32)}) 10... Qe7 11. Nc3 (11. a3 Ba5 12. Qa4 (12. Qb3 Rfd8 (12... Rad8 13. Nc3 Nb6 14. Rfd1 Rd7 15. Rac1 Rfd8 16. h3 Bd3 (16... h6 17. Nb1 Bd3 18. Bxd3 Rxd3 19. Qc2 c4 20. Ne1 R3d6 21. Nc3 Qd7 22. Ne4 Rd5 23. Nf3 Qe7 24. Rb1 Rd3 25. Ng3 Qd7 26. Ne2 Bxd2 27. Ned4 Ba5 28. Rxd3 {Skerlík,S (2234)-Bevan,P (2142) ICCF 2019 1/2 (34)}) 17. Bxd3 Rxd3 18. Ba1 a6 {Skerlík,S (2234)-Speisser,P (2192) ICCF 2019 1/2}) 13. Nc3 (13. Rc1 Rac8 14. Qb5 b6 15. Nc3 Nxc3 16. Bxc3 Bxc3 17. Rxc3 Ne5 18. Nxe5 Qxe5 19. d4 Qf6 20. Rd1 g6 21. h3 Kg7 22. Qa4 cxd4 23. Rxc8 {1/2 (23) Fagerbekk,E (2193) -Glørstad,T (2388) ICCF 2013}) 13... Nb6 (13... Bxc3 14. Bxc3 Nxc3 15. Qxc3 b6 16. Rad1 (16. Rfd1 Rac8 17. Rac1 h6 18. Bb5 Na5 {Skerlík,S (2245)-Yarovoy,A (2288) ICCF 2020 1/2 (46)}) 16... Rd6 17. d4 Qf6 18. Rfe1 h6 19. Ne5 Rad8 20. Nxc6 Rxc6 21. Rc1 Be4 22. dxc5 Qg6 23. g3 Rxc5 24. Qb2 Rdc8 25. Rxc5 {Skerlík, S (2234)-Bruns,C (2239) ICCF 2019 1/2 (30)}) 14. Rfd1 Rac8 15. Rac1 c4 (15... Be6 16. Qc2 Nd4 17. exd4 cxd4 18. Qe4 dxc3 19. Bxc3 Bxc3 20. dxc3 Rxd1+ 21. Rxd1 g6 22. Bf1 {1/2 (22) Skerlík,S (2234)-Sneddon,I (2238) ICCF 2018}) 16. Qa2 a6 17. h3 Rc7 18. Qa1 f6 19. Bf1 Qf7 20. d4 cxd3 {Skerlík,S (2241)-Wimmer,R (2030) ICCF 2017 1/2 (45)}) (12. d4 Rfd8 13. Bd3 Nxe3 14. Qe2 Bxd3 15. Qxd3 Nxf1 16. Kxf1 Nxd4 {0-1 (16) Wilshusen,H (1317)-Andersson,S (1985) ICCF 2020}) 12... Rfd8 13. Rc1 Bc7 14. Qh4 Rac8 15. Qxe7 Ndxe7 16. g4 Bg6 17. Nh4 Bxb1 18. Raxb1 Rxd2 19. Kf1 b6 20. Nf3 Rdd8 21. h4 h6 22. Rd1 Kf8 {Wantoch-Rekowski,J (2305)-Staniszewski,J (2350) ICCF 2006 1/2 (45)}) (11. Bb5 Rfd8 12. Bxc6 bxc6 13. Ne5 Qe6 14. Qf3 f6 15. Nxc6 Re8 16. Nxb4 cxb4 17. a3 b3 18. Nc3 Nxc3 19. Bxc3 {1-0 (19) Wantoch-Rekowski,J (2224)-Basargan,U (2196) ICCF 2009}) 11... Rad8 (11... Bxc3 12. dxc3 Rad8 13. Qb3 Nf6 14. Rad1 Ne4 15. c4 Na5 16. Qa4 b6 17. Rfe1 Qe8 18. Qc2 Nd6 19. Qc1 f6 20. Bc3 Nc6 21. Rd2 h6 22. Red1 Qe7 { Mehlhorn,U (2376)-Filin,E (2359) ICCF 2018 1/2 (27)}) 12. Nxd5 Rxd5 13. a3 Ba5 14. d4 Rfd8 15. Qa4 cxd4 16. Nxd4 Nxd4 (16... Bd7 17. Qc2 Rc8 18. Qd1 Rd6 19. Bd3 Ne5 20. Bb5 Nc4 21. Bxc4 Rxc4 22. Qf3 Rb6 23. Rab1 h6 24. Rfd1 Rc5 25. Ba1 Ba4 26. Rf1 Rxb1 27. Rxb1 Qc7 28. Rf1 {Wantoch-Rekowski,J (2305)-Falatowicz,P (2213) ICCF 2006 1/2 (39)}) 17. Bxd4 Bc7 18. Bc4 R5d7 19. Qb5 { Wantoch-Rekowski,J (2305)-Kasperek,R (2284) ICCF 2006 1/2 (62)}) (7... Bf5 8. Nc3 (8. Bc4 Nc6 9. Bc3 a6 (9... Nxc3 10. Nxc3 Bxc3 11. dxc3 Qf6 12. Qb3 Na5 13. Qb4 b6 14. O-O-O c5 15. Bxf7+ Rxf7 16. Qb2 Nc4 17. Qb3 b5 18. Rd5 Bh3 19. Rxc5 Bxg2 20. Ne5 Qxf2 {0-1 (21) Di Pietro,R (1665)-Casella,S (1807) ICCF 2009}) 10. a3 Be7 11. d4 Nxc3 12. Nxc3 Na5 13. Bd3 Bxd3 14. Qxd3 c5 15. O-O b5 16. Rfd1 c4 17. Qf5 Qd6 18. Qd5 Rad8 19. Qxd6 Bxd6 {Di Pietro,R (1665)-Quattrocchi,G (2278) ICCF 2009 0-1 (26)}) (8. Be2 Nd7 9. Bb2 c6 (9... Qe7 10. O-O Rfe8 11. a3 Bd6 12. Nc3 Nxc3 13. Bxc3 c6 14. Nd4 Be4 15. f3 Bg6 16. f4 h6 17. a4 Nf6 18. Bc4 Rad8 19. a5 a6 20. Ra4 Bc7 21. Nf3 {Stapinski,R (1748)-Moujan,P (2119) ICCF 2019 1/2 (53)}) 10. O-O Qe7 11. Nd4 (11. a3 Ba5 12. Nd4 Bg6 13. f4 h6 14. f5 Bh7 15. Bf3 N5f6 16. Qc2 Rfe8 17. a4 Rad8 18. Ba3 Qe5 19. Bb2 Qd6 20. Ba3 Qc7 21. Nc3 Qe5 22. Rab1 {Fagerbekk,E (2191)-Ziegler,P (2194) ICCF 2012 0-1 (42)}) 11... Bg6 12. Nc2 Rfd8 13. d4 Ba5 14. Bd3 Qe6 15. Ne1 c5 16. Bxg6 Qxg6 17. Qb3 Qc6 18. Na3 b5 {Dzieniszewski,A (2251)-Egoshin,G (2289) ICCF 2012 0-1 (49)}) 8... Nc6 9. Nxd5 Qxd5 10. Bxc7 Rac8 11. Bf4 Ba3 12. Qb3 Nb4 13. Qxd5 Nxd5 14. Be5 f6 15. Bd4 Nb4 16. Bb5 Nc2+ 17. Ke2 Nxa1 18. Rxa1 a6 19. Ba4 {Schmidt,K (2125)-Petrov,Y (2291) ICCF 2010 0-1 (46)}) 8. Bb2 (8. a3 Ba5 (8... Be7 9. Be2 c5 10. Qc2 Nc6 11. Bb2 Bf6 12. Nc3 Nxc3 13. dxc3 g6 14. Rd1 Qb6 15. Nd2 Na5 16. O-O Be6 17. a4 Rad8 18. Bb5 Bf5 19. e4 Bd7 20. Bxd7 {Wantoch-Rekowski,J (2173) -Opitz,P (2232) ICCF 2010 0-1 (49)}) (8... Bf8 9. Be2 c5 10. O-O Nc6 11. Bg3 Qf6 12. Ra2 a6 13. d3 b5 14. Rc2 Bb7 15. Qc1 Rac8 16. Nbd2 Na5 17. Ne4 Qd8 18. Nfd2 f5 {Kural,A (2389)-Mackintosh,I (2363) ICCF 2017 0-1 (50)}) 9. Bb2 (9. Qb3 Nc6 10. Bb2 Be6 11. Qc2 Bg4 12. Be2 Qd7 13. O-O Nf4 14. Bb5 Bxf3 15. gxf3 Re6 16. exf4 Rg6+ 17. Qxg6 hxg6 18. Bc3 Bb6 19. a4 a6 20. Bxc6 Qxc6 {Yeung,C (1806) -Helman,B ICCF 2005 0-1 (29)}) (9. Be2 Rxe5 10. Nxe5 Qf6 11. Nc4 Qxa1 12. Nxa5 Qe5 13. d4 Qg5 14. O-O b6 15. Nc4 Nd7 16. Qa4 N7f6 17. Ne5 Bb7 18. Bf3 c5 19. Nd2 a6 20. Ndc4 cxd4 {Ziemak,K-Quirk,M (1968) ICCF 2017 1-0 (47)}) 9... Bf5 10. Nc3 (10. Bc4 Nb6 11. Be2 c5 12. O-O Nc6 13. d4 cxd4 14. Nxd4 Nxd4 15. Qxd4 Qxd4 16. Bxd4 Rac8 17. a4 Re7 18. Rd1 Rec7 19. Bxb6 Bxb6 20. a5 Bc5 21. Nc3 Bc2 { Degterev,P (2545)-Jaulneau,C (2553) ICCF 2007 1/2}) 10... Nxc3 11. dxc3 Qf6 12. Qd4 Nd7 13. Qxf6 Nxf6 14. Nd4 Be4 15. f3 Bd5 16. O-O-O c5 17. Nc2 Bc6 18. e4 Ba4 19. Be2 Nd7 {Schmidt,K (2125)-Hughes,S ICCF 2010 0-1 (62)}) (8. Qb3 Nc6 9. Bb2 Be6 10. Bc4 Na5 11. Qc2 Nxc4 12. Qxc4 Nxe3 13. Qc1 Nxg2+ 14. Kf1 Qd3+ { 0-1 (14) Baumann,W (2052)-Böhnke,H (2089) ICCF 2009}) (8. Bc4 Bg4 9. Bb2 Nxe3 10. fxe3 Rxe3+ {1/2 (10) Bedbur,H (1937)-Ksenzov,P (1823) ICCF 2017}) (8. Be2 Rxe5 9. Nxe5 Qf6 10. O-O Qxe5 11. d4 Qg5 12. a3 (12. Bf3 c6 13. Qd3 Be6 14. a3 Ba5 15. Nd2 Nd7 16. Rab1 b5 17. Rbc1 Rc8 18. Ne4 Qd8 19. Rfd1 h6 20. h3 Bf5 21. Qb3 Be6 22. Qb1 Qc7 23. Be2 Qb8 {Muliuolis,V (1933)-Vecek,M (2387) ICCF 2020 0-1 (44)}) 12... Bd6 13. Bf3 Nc6 14. Nd2 Nxe3 15. fxe3 Qxe3+ 16. Kh1 Qf4 17. g3 Qxd4 18. Qc2 Bh3 19. Rfd1 Bg4 {Jean,L-Lugli,A ICCF 2013 1/2 (27)}) 8... Nc6 ( 8... Nf4 9. a3 (9. Qb3 Nc6 10. Qc4 Bd6 11. Qc3 Ne5 12. Nxe5 Bxe5 13. d4 Bf6 14. Nd2 Bg4 15. Rc1 c5 16. Qxc5 Rc8 17. Qxa7 Rxc1+ 18. Bxc1 Bxd4 19. Qa3 Nd5 20. Nc4 Nb4 {Kapustin,A (2018)-Panov,S ICCF 2013 0-1}) (9. Ne5 Qd5 10. exf4 Nc6 11. Be2 Qxg2 12. Bf3 Qh3 13. Qb3 Be6 14. Qe3 f6 15. Rg1 fxe5 16. Bxc6 bxc6 17. Rxg7+ Kf8 18. Bxe5 Qxh2 19. Qe4 Bd6 20. Rxh7 Qg1+ {Morley,P (2234)-Eschert,U (1807) ICCF 2009 1/2 (84)}) 9... Bd6 10. Qc2 (10. d4 Bf5 11. Nc3 Nc6 (11... c6 12. Ne5 Bxe5 13. dxe5 Qxd1+ 14. Rxd1 Ng6 15. f4 Nd7 16. Be2 Nb6 17. O-O Rad8 18. e4 Bc8 19. Rd6 Nf8 {Marconi,R (2063)-Heyland,P ICCF 2011 1-0}) 12. g3 Nh3 13. Be2 Qf6 14. Rf1 Bg4 15. Nb5 Rad8 16. Rb1 Bf5 17. Rc1 a6 18. Nxd6 Rxd6 19. Nh4 Be6 20. Qc2 Bd5 21. Nf5 Rde6 {Rajala,O (1861)-Laine,J (1861) ICCF 2007 0-1 (58)}) 10... Nc6 11. Nc3 (11. g3 Nh3 12. d4 Qf6 13. Nbd2 Bg4 14. Bg2 Rad8 15. Qd3 a6 16. Rc1 h6 17. Rc2 Bf8 18. Kf1 Rd5 19. e4 Rb5 20. Nc4 Ng5 21. Nfe5 Nxe5 22. dxe5 Qd8 {Wantoch-Rekowski,J (2245)-Kolanowski,M (2137) ICCF 2009 0-1 (51)} ) 11... Ne5 (11... Bg4 12. Ne2 (12. O-O-O Nh3 13. d4 Qe7 14. Nd5 Qe6 15. Nc3 Ne7 16. Rd3 Bxf3 17. gxf3 Nd5 18. Kb1 c6 19. Ne4 Be7 20. Nc5 Qc8 21. Rd2 Rb8 22. Bd3 g6 23. e4 Ndf4 {Wantoch-Rekowski,J (2224)-Rau,M (2267) ICCF 2009 1/2 (52)}) 12... Ne6 13. Ned4 Nexd4 14. Nxd4 Nxd4 15. Bxd4 Be6 16. Bd3 Qh4 17. Be4 c5 18. Bc3 Rab8 19. Qd3 Bc7 20. g3 Qh3 21. a4 f6 22. Qf1 Qh5 23. Qe2 { Fernández Fornés,J (2297)-Arias Duval,G (2281) ICCF 2012 1/2 (74)}) 12. Nxe5 Bxe5 13. g3 Nh3 14. Bg2 c6 15. Rf1 Bf6 16. O-O-O Be7 17. d4 Qa5 18. Qa4 Qxa4 19. Nxa4 Ng5 20. Nc3 {Jiménez Ariza,J (2373)-Balagué Canadell,J (2053) ICCF 2014 1/2 (45)}) (8... Be7 9. d4 c5 (9... Bb4+ 10. Nbd2 Bg4 11. h3 Bxf3 12. Qxf3 Bxd2+ 13. Kxd2 Qd6 14. Bd3 Nd7 15. a3 Re6 16. g3 Rae8 17. Rac1 {1/2 (17) Daatselaar,J (2173)-Glaubitz,F (2056) ICCF 2007}) 10. dxc5 Bxc5 11. Qc2 Bxe3 12. fxe3 Nxe3 13. Qb3 Nxg2+ 14. Kf2 Ne3 15. Nbd2 Nc6 16. Nc4 Ng4+ 17. Kg1 Qc7 18. Qc3 f6 19. Rd1 Be6 20. Ba3 {Daatselaar,J (2290)-Sharpe,S ICCF 2005 1/2 (29) }) (8... c5 9. a3 (9. Qc2 Nc6 (9... Qe7 10. Bd3 h6 11. O-O (11. h3 Nc6 12. O-O Be6 13. Bh7+ Kh8 14. a3 Ba5 15. Rc1 Rac8 16. Bd3 a6 17. Bf1 Bc7 18. d3 Na5 { Lykke,H (2442)-Wilhelmi,D (2426) ICCF 2017 1/2 (32)}) 11... Be6 12. Na3 (12. Rc1 Nd7 13. Be2 Rac8 14. a4 Red8 15. Na3 Nb8 16. Nc4 Nc6 17. Rd1 Qe8 18. Qe4 Nde7 19. Rac1 b6 20. h4 Qd7 21. h5 {Selen,D (2439)-Köhl,R (2200) ICCF 2017 1/2 (37)}) 12... Nd7 13. Nc4 b5 14. Nce5 Nxe5 15. Nxe5 c4 16. Nc6 Qb7 17. Bh7+ Kh8 18. Nd4 Bxd2 19. Be4 c3 20. Nxe6 Rxe6 21. Bxd5 {Jiménez Ariza,J (2404) -Schreiner,R (2273) ICCF 2017 1/2 (30)}) 10. Bd3 (10. a3 Ba5 11. Bd3 h6 12. O-O Bg4 (12... Be6 13. Bh7+ Kh8 14. Bf5 Bxf5 15. Qxf5 Kg8 16. a4 Ncb4 17. Nc3 Qf6 18. Qb1 Qe6 19. h3 Rac8 20. Rc1 Nf6 21. Ba3 Qe7 22. d4 {Müller,D (2309) -Sirotti,C (2144) ICCF 2017 1/2 (37)}) 13. Bh7+ Kh8 14. Be4 f5 15. Bxd5 Qxd5 16. Nh4 Ne7 17. Nc3 Qe6 18. h3 Bh5 19. e4 Rad8 20. Nxf5 c4 21. Ng3 Bg6 { Buczinski,H (2208)-McKenzie,C (2276) ICCF 2012 1/2 (44)}) 10... h6 (10... g6 11. O-O Bg4 12. Be4 Rc8 13. d3 Nf6 14. Bxc6 Rxc6 15. Ne5 Rce6 16. Nxg4 Nxg4 17. a3 Qc7 18. g3 Ba5 {Zdziech,M (1938)-Adamson,T (1707) ICCF 2020 1/2}) 11. O-O Ba5 12. Be2 Nf4 13. Bb5 Ne6 14. Nc3 Nb4 15. Qb1 Bd7 16. Bxd7 Qxd7 17. Ne5 Qe7 18. a3 Nc6 19. Nxc6 bxc6 20. Qc2 Rad8 {Ilzig,G-Perrin,R (2020) ICCF 2016 1-0 (49)}) (9. Bb5 Bd7 10. Bxd7 Nxd7 11. O-O N7b6 12. d3 c4 13. Bd4 Rc8 14. a4 c3 15. Na3 a5 16. Qb3 Bxa3 17. Rxa3 c2 18. Bxb6 Qxb6 19. Qxb6 Nxb6 20. Rc1 Nd5 { Wantoch-Rekowski,J (2224)-Morley,P (2205) ICCF 2009 1/2 (31)}) 9... Ba5 10. Bc4 Nc6 11. O-O Be6 12. Qc2 Qe7 13. d3 a6 (13... Rad8 14. Nbd2 a6 15. Rac1 b5 16. Bb3 Bb6 17. Rfe1 Na5 18. Ba2 Rc8 19. Qb1 Red8 20. Ne4 b4 21. axb4 cxb4 22. Qa1 b3 23. Bb1 f6 24. Nfd2 f5 25. Ba3 {Frydendal,O (1848)-Dempster,D (1743) ICCF 2010 1-0 (62)}) 14. Nbd2 b5 15. Ba2 Rad8 16. Nb3 Bb6 17. Rac1 Nf6 18. Bxf6 gxf6 19. Bb1 Rd5 20. d4 {Meara,P (1684)-McMahon,F (1955) ICCF 2016 1/2 (54)}) (8... Nd7 9. Be2 Nc5 (9... Qe7 10. O-O N7f6 11. Ne5 Bf5 12. Bc4 c6 13. Qf3 g6 14. d4 Rad8 15. a3 {Wantoch-Rekowski,J (2305)-Kubicki,T (2312) ICCF 2006 0-1 (50)}) 10. a3 Ba5 11. Qc2 Qd6 12. O-O Bd7 13. d4 Na4 14. Ne5 Rad8 15. Rc1 Nxb2 16. Qxb2 Qb6 17. Ra2 Qxb2 18. Rxb2 Bb6 19. Nc4 Bc6 20. Bf3 {Recasens Sánchez,J (2124)-Durán Rubíes,J (1950) ICCF 2008 1-0 (65)}) 9. a3 (9. Be2 Bf5 (9... Be6 10. O-O Bf5 (10... Qe7 11. a3 Bd6 12. Qc2 Rad8 13. d4 Bg4 14. Nbd2 Nxe3 15. fxe3 Qxe3+ 16. Rf2 Bxh2+ 17. Nxh2 Bxe2 18. Nhf3 Qd3 19. Qc5 Qb5 20. Qc3 Qd3 21. Rxe2 Qxe2 22. d5 {Zhuravlev,K (2180)-Malbasic,L (1865) ICCF 2015 1/2 (36)}) 11. d4 (11. a3 Ba5 12. d4 Qf6 13. Nbd2 a6 14. Rc1 Rad8 15. Nc4 Qh6 16. Nxa5 Nxa5 17. Bc3 Nc6 18. Re1 Be4 19. Bb2 Qg6 20. g3 Nf6 21. Nh4 Qh6 22. Bf1 Nd5 { Jung,R (2272)-Marshall,I (2117) ICCF 2016 1-0 (51)}) 11... Qf6 12. Ne5 Rad8 13. Bf3 Nxe5 14. dxe5 Qg6 15. Qc1 Bg4 16. Bxg4 Qxg4 17. Nc3 Bxc3 18. Bxc3 Re6 19. Qd2 Rh6 20. Rfd1 Rg6 21. g3 {Ramos Mora,J (1964)-Piera i Arbat,J (1858) ICCF 2013 0-1 (42)}) (9... Rxe3 10. fxe3 Nxe3 11. Qb3 Nxg2+ (11... Qe7 12. a3 Nxg2+ 13. Kd1 Be6 14. Bc4 Bxc4 15. Qxc4 Rd8 16. Kc1 Ne3 17. Qh4 Qc5+ 18. Nc3 Bxc3 19. Bxc3 Rd3 20. Qe1 h6 21. Rg1 Nf5 22. Rf1 Ne3 23. Rf2 {Fagerbekk,E (2178) -McCartney,P (2104) ICCF 2011 1-0 (43)}) 12. Kd1 Be6 13. Qd3 Qe7 (13... Qxd3 14. Bxd3 Bg4 15. Be2 Nf4 16. Re1 (16. Rf1 Nxe2 17. Kxe2 Bc5 18. Kd3 Rd8+ 19. Kc4 Bh3 20. Na3 Bxf1+ 21. Rxf1 {Hering,H-Girard,E (2403) ICCF 2011 1/2 (28)}) 16... Re8 17. Ng1 Nxe2 18. Rxe2 Bc5 19. Ke1 Bxe2 20. Nxe2 Bd6 21. h3 Nb4 22. Kd1 Nd3 23. Bd4 f5 24. Nbc3 c5 25. Bg1 {Boer,J-Faber,B (2168) ICCF 2013 0-1 (30)}) 14. Rg1 Rd8 15. Rxg2 Rxd3 16. Rxg7+ Kf8 17. Bxd3 Qd7 18. Ne1 h5 19. Kc1 Ne5 20. Bxe5 {1-0 (20) Gavrijski,D (2010)-Cottarelli,F (2185) ICCF 2006}) (9... Qd6 10. O-O Qg6 11. a3 Bd6 12. g3 Bg4 13. d4 h6 14. Nbd2 Rad8 15. Re1 Na5 16. Nh4 Bxe2 17. Qxe2 Qc2 18. Rab1 c6 19. Rec1 Qh7 20. e4 b5 21. Qd3 {Frydendal,O (1834)-Johansen,O (2247) ICCF 2011 1/2 (35)}) 10. O-O (10. a3 Be7 (10... Ba5 11. O-O h6 (11... Qd7 12. Nc3 Nxc3 13. dxc3 Qe6 14. Qa4 Bb6 15. Rad1 Rad8 16. Bb5 Qa2 17. Bc1 Rxd1 18. Qxd1 a6 19. Bxc6 bxc6 20. Nd4 Bd7 21. Qa4 Qd5 22. c4 c5 23. Qb3 {Wantoch-Rekowski,J (2246)-Weiner,J ICCF 2008 1/2 (46)}) (11... g5 12. Bb5 Nb6 13. Bxc6 bxc6 14. Ne5 Qd5 15. f4 gxf4 16. Ng4 Nd7 17. Nh6+ Kf8 18. Nxf5 Qxf5 19. Rxf4 Qg6 20. Qa4 Rab8 21. Rg4 Qd3 22. Bg7+ Kg8 23. Nc3 { Wantoch-Rekowski,J (2173)-Martínez Montoya,M (1778) ICCF 2010 1-0 (26)}) (11... Nce7 12. d3 (12. Nh4 Be6 13. Qc2 c6 14. Nc3 Nxc3 15. dxc3 Ng6 16. Nf3 Bc7 17. c4 c5 18. Bd3 Qe7 19. Be4 Rad8 20. Rad1 {1/2 (20) Bartsch,A (2213)-Pecis,G (2382) ICCF 2010}) 12... Nc6 (12... Ng6 13. Nd4 Bd7 14. Bf3 Qg5 15. Be4 Bg4 16. Nf3 Bxf3 17. Qxf3 Rad8 18. Qh3 c5 19. Ra2 h6 20. Ba1 c4 21. Bxg6 fxg6 22. Rb2 c3 23. Re2 Kh7 24. d4 {Wantoch-Rekowski,J (2305)-Hofstetter,H (2443) ICCF 2006 0-1 (43)}) 13. Qc2 Bb6 14. Nc3 Rxe3 15. fxe3 Nxe3 16. Qb1 Nxf1+ 17. Kxf1 Nd4 18. Ne4 Nxe2 19. Kxe2 Qd5 20. Qc2 Re8 21. Kf1 Rd8 22. a4 Qxd3+ 23. Qxd3 { Gosling,B-Coleby,R (2055) ICCF 2017 1/2 (45)}) 12. Qb3 (12. d4 Qf6 13. Ne5 Nxe5 14. dxe5 Qe6 15. Qb3 Rad8 16. Bc4 Qg6 17. Kh1 Bc2 18. Qa2 Be4 19. Rg1 b5 20. Bb3 c5 21. f3 c4 22. fxe4 Nxe3 23. Bxc4 bxc4 {Eraclides,G (1987)-Carrión Lava, J (1988) ICCF 2013 1-0 (26)}) 12... Qd6 13. d4 a6 14. Rc1 Bb6 15. Nc3 Nxd4 16. Nxd4 Bxd4 17. Nxd5 Bxb2 18. Qxb2 Qxd5 19. Rxc7 b5 20. Bh5 Be6 21. Bf3 Qd8 22. Rac1 {Gavrijski,D (2010)-Krüger,J ICCF 2006 1/2 (43)}) 11. O-O Qd6 12. Nc3 a6 13. Nxd5 Qxd5 14. d3 Qe6 15. Rc1 Rad8 16. Qc2 Qg6 17. Rfd1 Rd5 18. e4 Rc5 19. Bc3 Bh3 20. g3 Bf6 21. d4 Rxc3 {Gierth,K (2204)-Wimmer,R (2025) ICCF 2010 1-0 (50)}) 10... Qe7 (10... Bf8 11. Qb3 (11. Nc3 a6 (11... a5 12. Qb3 Ndb4 13. d4 a4 14. Qc4 a3 15. Bc1 Be6 16. d5 Nxd5 17. Nxd5 Bxd5 18. Qc2 Nb4 19. Qc3 Nxa2 20. Qd4 Nxc1 21. Rfxc1 c6 22. Bc4 {Yeung,C (1725)-Gasanov,E ICCF 2009 0-1 (31)} ) 12. d3 (12. d4 h6 13. Bd3 Bxd3 14. Qxd3 Qd7 15. Rfc1 Rad8 16. Nxd5 Qxd5 17. Ba3 Bd6 18. Rab1 b5 19. Bxd6 cxd6 20. a4 Rb8 21. Nd2 Rb6 22. Qc3 b4 23. Qb3 Ne7 {Morley,P (2241)-Hamblin,D ICCF 2007 1/2 (53)}) 12... Nb6 13. a3 Qd7 14. Qc2 Rad8 15. Ne4 h6 16. Rfd1 Qe7 17. Ng3 Bg6 18. Rab1 Nd7 19. Nd2 Nc5 20. Nb3 Rd5 21. Nxc5 Rxc5 22. Qd2 Rd8 {Wantoch-Rekowski,J (2246)-Abramov,S (2219) ICCF 2008 1/2 (36)}) (11. a3 a6 (11... Qd7 12. d4 a6 13. Nbd2 h6 14. Rc1 Rad8 15. Nb3 Nb6 16. Nc5 Bxc5 17. Rxc5 Qe6 18. Nd2 Qg6 19. Bf3 Bd3 20. Re1 Bb5 21. Ba1 Qe6 22. Ne4 Qe7 23. Qc1 {Kural,A (2140)-Sobry,S (2019) ICCF 2009 1-0 (46)}) ( 11... Na5 12. d4 c6 13. Bd3 Bg6 14. Bxg6 hxg6 15. Nbd2 b5 16. Qb1 Rc8 17. Rc1 Rc7 18. h3 a6 19. Qa2 Bd6 {Bellmann,H (2453)-Müller,D (2366) ICCF 2016 1/2 (50) }) 12. d4 (12. d3 Qd7 13. Re1 Nb6 14. Qc2 Rad8 15. e4 Bg6 16. Nbd2 Be7 17. Rac1 Bd6 18. g3 h6 19. d4 Nb8 20. Bd1 Bh7 21. Qc3 Nc6 22. Bb3 Kh8 23. Nc4 Nxc4 { Jiménez Ariza,J (2373)-Juárez de Vena,A (2020) ICCF 2014 1-0 (31)}) 12... h6 13. Bd3 Qd7 14. Re1 Bxd3 15. Qxd3 Bd6 16. Nbd2 Na5 17. e4 Nf4 18. Qc2 c5 19. e5 Bf8 20. Qe4 Nd5 21. dxc5 Bxc5 22. Qh4 Rac8 {Wantoch-Rekowski,J (2245) -Kolodziejski,M (2067) ICCF 2009 1/2 (29)}) 11... Ndb4 {0-1 (11) Anguís,M (1607)-Cherner,L (1795) ICCF 2007}) (10... a6 11. a3 Bd6 12. d4 (12. d3 Qe7 13. Re1 Rad8 (13... Ne5 14. Bxe5 Bxe5 15. Nxe5 Qxe5 16. d4 Qe7 17. Bf3 Be4 18. Nd2 Bxf3 19. Nxf3 Nf6 20. Qc2 c5 21. Qxc5 Qxc5 22. dxc5 Ne4 23. a4 Nxc5 24. a5 Rad8 25. Reb1 {Waite,D (2096)-Beavan,R (1950) ICCF 2014 1-0 (42)}) 14. Nbd2 Nf6 15. Nc4 Bc5 16. Qc2 h6 17. Rac1 Qe6 18. Bf1 Re7 19. Qb1 b6 20. h3 Ree8 21. Ncd2 Bg6 22. Qa1 Be7 23. e4 b5 {Barendswaard,W (2111)-Heijnens,R (2291) ICCF 2020 1-0 (34)}) 12... b5 13. a4 Rb8 14. axb5 axb5 15. Bd3 Qd7 16. Bxf5 Qxf5 17. Qb3 Ncb4 18. Nc3 Nxc3 19. Bxc3 Nd5 20. Bd2 h6 21. Ra5 c6 22. Rc1 {Muri,H (2388) -Preziuso,T (2352) ICCF 2006 1/2 (50)}) 11. a3 (11. Qb3 Be6 (11... Rad8 12. a3 Ba5 13. Qxb7 (13. Nc3 Nxc3 14. Bxc3 Be4 15. Rfc1 Bd5 16. Qd1 a6 17. Bxa5 Nxa5 18. Rab1 {1-0 (18) Frydendal,O (1913)-Johansen,A (1687) ICCF 2009}) 13... Rd6 14. Qa6 Nd4 15. Qxa5 Nxe2+ 16. Kh1 Be4 17. Nc3 Ndxc3 18. Bxc3 Qd7 19. Ne1 Rh6 20. Qg5 f6 21. Qc5 Qh3 {0-1 (21) Vlak,J (2310)-Hamann,H (2287) ICCF 2008}) 12. Qc2 Bd6 13. Nc3 a6 14. d4 Ncb4 15. Qb1 Nxc3 16. Bxc3 Nd5 17. Bd2 Nb6 18. Rc1 Bd5 {0-1 (18) Engle,L-Menten,R (2003) ICCF 2007}) (11. Bc4 Rad8 12. Qc1 Bg4 13. Nc3 Bxf3 14. gxf3 Bxc3 15. Bxc3 Qh4 16. f4 Rd6 17. f3 Rg6+ 18. Kh1 Rh6 { 0-1 (18) Ramos Mora,J (1749)-Domenche Redondo,F (1778) ICCF 2019}) 11... Bd6 12. d4 (12. Re1 Ne5 (12... Qe6 13. Nh4 Qh6 14. g3 Bd7 15. Nc3 Nxc3 16. Bxc3 Be7 17. Ng2 Rad8 18. d4 a6 19. Qb3 b5 20. Qc2 Rc8 21. e4 Nd8 22. e5 Ne6 23. d5 Ng5 24. Nf4 {Fels,B (2104)-Platero Manteca,J ICCF 2010 1-0 (40)}) (12... Rad8 13. Nc3 Nxc3 14. Bxc3 Bxa3 15. Qb3 Bb4 16. Bxb4 Nxb4 17. Rxa7 Be4 18. d4 Nc6 19. Raa1 Bxf3 20. gxf3 b6 21. Bb5 Qg5+ 22. Kh1 Re6 23. Rg1 Qh5 24. Rg3 {Cooper,R (2038)-Dudeney,K (1874) ICCF 2013 1/2 (47)}) 13. Bxe5 Bxe5 14. Nxe5 Qxe5 15. d4 Qe7 16. Qb3 c6 17. Nd2 Be6 18. Qb2 Rac8 19. g3 Red8 20. e4 Nc7 21. Rac1 Qd6 22. Nf3 Rb8 23. Qc3 Bg4 {Barendswaard,W (2111)-Groot,P (2290) ICCF 2020 1/2 (32)}) (12. Qb3 Nf4 13. Bb5 (13. Bc4 Ne6 14. Be2 Nc5 15. Qc3 Qf8 16. d4 Na4 17. Qb3 Nxb2 18. Qxb2 Rab8 19. Nbd2 a6 20. Rfc1 Qe7 21. Nc4 Qd7 22. Nxd6 cxd6 23. Qb6 Ne7 24. Nd2 Nd5 {Morley,P (2234)-Liso,H ICCF 2009 1-0 (75)}) 13... Nxg2 14. Bxc6 bxc6 15. Qc3 f6 16. d3 Qe6 17. Nbd2 Nxe3 18. fxe3 Qxe3+ 19. Kh1 Qxd3 20. Qxc6 Rab8 21. Bd4 Re2 22. Rab1 Rd8 23. Rb3 Qc2 {Cottarelli,F (1856)-Tymms,J (1729) ICCF 2014 1/2}) (12. Nc3 Nxc3 13. Bxc3 Bxa3 14. Qb3 Bb4 15. d4 Be6 16. Qb2 Bd5 17. Nd2 a5 18. Bd3 Bxc3 19. Qxc3 Nb4 20. e4 Nxd3 21. Qxd3 Bxe4 22. Nxe4 Qxe4 23. Qc3 c6 {Baumann,W (2052)-Grego,L (1935) ICCF 2009 0-1 (26)}) 12... Na5 (12... Qe6 13. Nbd2 (13. Nc3 Nxc3 14. Bxc3 Ne7 15. Bb4 Nd5 16. Bc4 c6 17. Bxd6 {1/2 (17) Bartsch,A (2256)-Mantu,E ICCF 2008}) 13... a6 (13... Nf6 14. Bc4 Qd7 15. Nh4 Be6 16. Bd3 Rad8 17. Qc2 Qe7 18. g3 Bh3 19. Rfb1 Qd7 20. Ndf3 h6 21. e4 Be7 22. d5 Nb8 23. Ne5 Qc8 24. Bc4 Bd6 25. Nxf7 {Ilzig,G-Hjorth-Gravesen,J (1806) ICCF 2016 1-0 (30)}) (13... Rad8 14. Bc4 Na5 15. Ba2 c6 16. Re1 Qg6 17. Nh4 Qh6 18. g3 Be6 19. e4 Ne7 20. Bc3 Bc7 21. Bxe6 {Kural,A (2351)-Whaley,M (2317) ICCF 2014 1/2 (45)}) 14. Bc4 b5 15. Ba2 Nce7 16. g3 Bd3 17. Re1 f5 18. Qb3 Be4 19. Ng5 Qg6 20. Ngxe4 fxe4 21. Bb1 Qh5 22. Bxe4 Rf8 23. f4 {1-0 (23) Ilzig,G-Linden,M ICCF 2016}) (12... Rad8 13. Nbd2 (13. Nc3 Nxc3 14. Bxc3 a5 15. Qb3 b6 16. Rfe1 Qe4 17. Bc4 Be6 18. d5 a4 19. Qa2 b5 20. Nd2 Qf5 {Schmidt,K (2148)-Marchant,A ICCF 2014 1-0 (46)}) 13... a6 14. Re1 Qf6 (14... Nf6 15. Nc4 Be4 16. Nfd2 Bd5 17. Nxd6 Qxd6 18. Bd3 Ne4 19. f3 Nxd2 20. Qxd2 Qh6 21. Qc3 f6 22. Rab1 Qg5 23. e4 Bf7 24. d5 Ne5 25. Be2 b5 26. Qxc7 {Brisson,P (2066) -Wilson,M ICCF 2015 1-0 (35)}) 15. g3 Nb6 16. Nh4 Bd7 17. Bd3 Bf8 18. Qc2 Qh6 19. Nhf3 Bg4 20. e4 Nd7 21. h4 Qh5 22. Nh2 Bh3 23. Ndf3 Nb6 24. d5 {Ilzig, G-Hughes,G (1705) ICCF 2016 1-0 (31)}) 13. Re1 c6 14. Nbd2 Qc7 15. Bf1 Qb6 16. Nh4 Qxb2 17. Nxf5 Bxa3 18. Rb1 Qa2 19. e4 Bb4 20. exd5 Qxd2 {Rooms,T (2345) -Palm,W (2319) ICCF 2011 1-0 (42)}) (9. Bc4 Nb6 10. Be2 Bf5 11. Qb3 a5 12. a4 Nd7 13. Bd4 Nxd4 14. Nxd4 Nc5 15. Qc4 Bxb1 16. Rxb1 Nxa4 17. O-O Nb6 18. Qc2 c6 19. Bd3 g6 20. f4 c5 {Andersen,H-Lindegaard,P (1855) ICCF 2015 0-1}) 9... Ba5 ( 9... Bd6 10. d4 (10. Be2 Nce7 11. O-O c5 12. d3 b6 13. Nbd2 Nc6 14. Rc1 Bb7 15. Ne4 Bf8 16. Ng3 g6 17. Qd2 Rc8 18. Bd1 Nf6 19. Bb3 Na5 20. Ba2 Bg7 21. Bc3 Bxf3 {Buczinski,H (2200)-Sifré Calafat,F (1823) ICCF 2011 1-0 (39)}) 10... Nf4 11. g3 Nd5 12. Bg2 Nb6 13. Nbd2 Bf5 14. O-O Bd3 15. Re1 Na5 16. Bc3 Nac4 17. a4 Nd5 18. Nxc4 Bxc4 19. Ba5 Nb6 20. Qc2 Be6 21. e4 {Daatselaar,J (2203)-Gool,J (2032) ICCF 2007 1/2 (33)}) (9... Be7 10. Bb5 (10. Be2 Bf6 11. d4 Bf5 12. O-O Qd7 13. Nc3 Nxc3 14. Bxc3 Rad8 15. Qb3 Qc8 16. Bc4 Bg6 17. Rfd1 a6 18. h4 b5 19. Bd3 Bxd3 20. Rxd3 Qf5 21. Rd2 Qg4 {Ladeira,P-Slavin,P (1878) ICCF 2013 0-1}) 10... Qd6 11. d4 Qg6 12. O-O Bh3 13. Ne1 Bg4 14. Be2 Bf5 15. Bf3 Rad8 16. Nd2 Nb6 17. Rc1 Bd6 18. g3 Qg5 19. Bg2 Bg4 20. Nef3 Qh5 21. e4 {Wantoch-Rekowski,J (2288) -Balabaev,F (2080) ICCF 2006 1/2 (28)}) 10. Be2 Bg4 (10... Nce7 11. O-O c6 12. Qc2 Bc7 (12... Bf5 13. d3 Bg4 14. Nc3 Nxc3 15. Bxc3 Bxc3 16. Qxc3 Nd5 17. Qb3 Re7 18. d4 Bh5 19. Rab1 Qd6 20. Rb2 a5 21. a4 Qb4 22. h3 Nc3 23. Bc4 Qxb3 { 1/2 (23) Böhnke,H (2034)-Kürten,D (2101) ICCF 2010}) 13. Re1 Bg4 14. h3 Bh5 15. d4 Ng6 16. g4 Qd7 17. gxh5 Qxh3 18. hxg6 Qg4+ 19. Kf1 {1/2 (19) Wantoch-Rekowski,J (2305)-Peczkowski,M (2327) ICCF 2006}) (10... Rxe3 11. fxe3 Nxe3 12. Qa4 (12. Qb3 Nxg2+ 13. Kd1 Be6 14. Qd3 Bb6 15. Qxd8+ Rxd8 16. Nc3 Na5 17. Rb1 Ne3+ {1/2 (17) Böhnke,H (2164)-Hoynck van Papendrecht,F (2226) ICCF 2011}) 12... Nxg2+ 13. Kd1 Bb6 14. Kc1 Be6 15. Nc3 Na5 16. Bd1 Qd6 17. Ne2 Rd8 18. Bc3 Nc4 19. Ned4 Nf4 20. Nxe6 Qxe6 21. Kb1 Nd5 22. Qxc4 {Roig García,J (1742)-Guirado Martínez,D (1767) ICCF 2018 1-0}) 11. O-O Qd6 12. Qb3 (12. Nc3 Nxc3 13. Bxc3 Bxc3 14. dxc3 Qf6 15. h3 Bf5 16. Qb3 b6 17. Rad1 a6 18. Rd2 Na5 19. Qb4 Re4 20. Qb2 Nc4 21. Bxc4 Rxc4 22. Nd4 Be4 23. f3 Bb7 {Degterev,P (2460) -Geißler,W (2323) ICCF 2006 1/2 (29)}) (12. h3 Bf5 (12... Bh5 13. d4 Qg6 14. Qd3 Qh6 15. Bd1 Rad8 16. Nbd2 Bg6 17. Qb3 Bf5 18. Nc4 {Müller,D (2362)-Hempel, R (2229) ICCF 2015 0-1 (72)}) 13. Qb3 Rad8 14. Rc1 Bb6 15. Nc3 Nxc3 16. Bxc3 Be4 17. d4 Qg6 18. Bd1 Bd5 19. Qb1 Be4 20. Bc2 f5 21. Bxe4 fxe4 22. Qa2+ Kh8 23. Ne5 Nxe5 {Böhnke,H (2144)-Ellis,J (2075) ICCF 2011 1-0 (36)}) (12. Qa4 Bh5 13. Bd1 Rad8 14. d4 a6 15. Nbd2 b5 16. Qc2 Bg6 17. Qc1 Nb6 18. Bc3 Rc8 19. a4 Bxc3 20. Qxc3 b4 21. Qb2 Nd5 22. Be2 {Kural,A (2351)-Thierry,R (2308) ICCF 2014 1/2 (35)}) 12... Rad8 13. Nc3 Bxc3 (13... Be6 14. Qc2 Nxc3 15. Bxc3 Bxc3 16. dxc3 h6 17. Rfd1 Qc5 18. Qb2 b6 19. Nd4 Bc4 20. Nxc6 Qxc6 21. Bxc4 Qxc4 22. Rd4 Qc6 23. Rad1 {1/2 (23) Bäckström,M (2258)-Gavrijski,D (2173) ICCF 2008}) 14. Bxc3 Nxc3 15. dxc3 b6 16. Rad1 Qf6 {Wantoch-Rekowski,J (2305)-Oleksy,J (2261) ICCF 2006 1/2}) (5. Nc3 Ng4 (5... Ba5 6. Nf3 d6 (6... Re8 7. e3 Ng4 8. Bf4 Bxc3 9. dxc3 Qf6 10. Be2 Qxc3+ 11. Nd2 Ne5 12. O-O d6 13. Ne4 Qa5 14. c5 Ng6 15. Qc2 Nxf4 16. exf4 d5 17. Ng5 g6 18. Rad1 {Domenche Redondo,F (1789) -Arteaga Hernández,L (1891) ICCF 2017 0-1 (34)}) 7. Bxf6 Qxf6 8. Nd5 Qd8 9. Qb3 c6 10. Nb4 Nd7 11. e3 Nc5 12. Qb2 Bg4 13. a3 Re8 14. Be2 Bxf3 15. gxf3 Qh4 16. Rg1 g6 17. Rg2 {Bonatti,A (1754)-Brancaleone,S (1868) ICCF 2009 0-1 (35)}) ( 5... c6 6. Qb3 Na6 7. Nf3 d6 8. Bd4 Nd7 9. Na4 Ne5 10. e3 Qa5 11. Qc2 f6 12. Be2 Nxf3+ 13. Bxf3 Bf5 14. e4 Bg6 15. Nc3 Nc5 16. O-O Ne6 17. Be3 {Degterev,P (2346)-Southwell,H (2393) ICCF 2006 1/2 (35)}) 6. Bg3 Bxc3 7. dxc3 Na6 (7... d6 8. c5 Qf6 9. Qd4 dxc5 10. Qxf6 Nxf6 11. Bxc7 Be6 12. e3 Ne4 13. Ne2 Na6 14. Bg3 Rad8 15. Bh4 g5 16. f3 gxh4 17. fxe4 Rd3 18. Rb1 Bc8 19. Kf2 {Walker,J (1932) -Cade,S (2141) ICCF 2011 0-1 (39)}) 8. e3 d6 9. Be2 Ne5 10. Nf3 Qe7 11. Nxe5 dxe5 12. Qd5 Re8 13. Rd1 Nc5 14. Qxe5 Qxe5 15. Bxe5 c6 16. Bd4 Nd7 {Walker,J (1932)-Wood,B (2036) ICCF 2011 0-1 (29)}) (5. Qc2 Nc6 6. Bb2 d5 (6... d6 7. f3 d5 8. cxd5 Nxd5 9. Kf2 Qg5 10. h4 Qh6 11. e4 Nf4 12. g3 Ne6 13. Ne2 Bc5+ 14. Kg2 Rd8 15. a3 b6 16. f4 Qh5 17. Qd1 Nxf4+ 18. gxf4 {Kubácek,J-Haznedaroglu,K (1990) ICCF 2006 0-1}) 7. cxd5 Nxd5 8. Kd1 Re8 (8... Bg4 9. Nf3 Ba5 10. d4 Bxf3 11. exf3 Nxd4 12. Bxd4 Bb6 13. Nd2 Bxd4 14. Rb1 Nc3+ 15. Kc1 Nxb1 16. Qxb1 Bxf2 17. Bd3 Qd6 18. Bxh7+ Kh8 19. Be4 Be3 20. Qd3 {Kubácek,J-Krüger,J ICCF 2006 0-1 (27)}) 9. Nf3 Qe7 10. d4 Bd6 11. e3 Ncb4 12. Qb3 Bf5 13. Na3 a5 14. Rc1 a4 15. Qc4 Be6 16. Qe2 Nxa2 {Kubácek,J-Cottarelli,F (2185) ICCF 2006 0-1}) 5... d5 (5... Nc6 6. Bb2 (6. e3 Nxe5 7. Nxe5 Ne4 (7... Re8 8. Nf3 d5 9. a3 Ba5 10. Nc3 d4 11. Nxd4 Qxd4 12. Be2 Qh4 13. O-O Bd7 14. Qc2 c6 15. d4 Bc7 16. h3 Rad8 17. Bf3 Bxh3 18. Ne2 Bxg2 {0-1 (18) Tago,S-Cuaycong,V ICCF 2009}) 8. Qc2 Nxf2 9. Kxf2 Qf6+ 10. Nf3 Qxa1 11. Nc3 Ba3 12. Bd3 Qb2 13. Bxh7+ Kh8 14. Qe4 Qb6 15. Bf5 a6 16. Nd5 Qh6 17. g4 d6 {Piriyev,M-Jordaan,W (2191) ICCF 2012 0-1}) (6. Bc3 d5 7. cxd5 Nxd5 8. e4 Re8 9. Bb5 Rxe4+ 10. Be2 Nf4 11. O-O Nxe2+ 12. Kh1 Bg4 13. d3 Bxf3 14. dxe4 Ng3+ 15. fxg3 Bxd1 16. Bxb4 Be2 17. Re1 Nxb4 {Slupski, M-Gardner,A ICCF 2011 0-1}) 6... d5 (6... Ne4 7. a3 Bc5 8. e3 d5 9. d3 Ng5 10. d4 Bb6 11. c5 Ba5+ 12. Bc3 Bg4 13. Be2 Ne4 14. Bxa5 Nxa5 15. Qa4 b6 16. O-O Re8 17. Ra2 c6 18. cxb6 {Gallach Pérez,Y-Hernández Delgado,J ICCF 2006 1/2 (37)}) 7. e3 (7. cxd5 Qxd5 8. Nc3 Bxc3 9. Bxc3 Ne4 10. Qb3 Nxc3 11. Qxc3 Bg4 12. Qb3 Qxb3 13. axb3 Bxf3 14. gxf3 Nd4 15. Rc1 Rfd8 16. Bg2 Nxb3 17. Rc2 a5 18. d3 a4 {Meara,P (1708)-McNamara,S (1843) ICCF 2015 0-1 (37)}) 7... Re8 (7... Be6 8. cxd5 (8. a3 Ba5 (8... Be7 9. Qc2 (9. d4 dxc4 10. Be2 Nd5 11. Nc3 Na5 12. O-O c6 13. Qc2 Nb3 14. Rab1 b5 15. Ne4 Qc8 16. Nfg5 Bf5 17. Qd1 h6 {0-1 (17) Tago,S (1601)-Beyer Lecaros,A (1996) ICCF 2015}) (9. cxd5 Qxd5 10. Nc3 Qh5 (10... Qd7 11. Bb5 a6 12. Ne5 Qd6 13. Bxc6 bxc6 14. d4 c5 15. Ne2 Rab8 16. Bc3 cxd4 17. exd4 Nd5 18. Bd2 c5 19. Nc4 Qc7 20. Rc1 Bf6 21. Na5 Rb5 22. Nb3 {Bonatti,A (2024)-Daatselaar,J (2233) ICCF 2006 0-1 (28)}) 11. Ne2 Qa5 12. Ng3 Qb6 13. Qc2 Bb3 14. Qc3 Rfe8 15. Be2 a5 16. O-O a4 17. Nf5 Bd8 18. Rac1 Ra5 19. Ng3 Ne5 20. Nxe5 {Fagerbekk,E (2220)-Nigul,U (2234) ICCF 2010 1/2 (75)}) 9... a6 10. d4 Na5 11. c5 Ne4 12. Nc3 f5 13. Ne2 Bf6 14. Nf4 Qe7 15. Be2 b6 16. O-O Bf7 17. c6 b5 18. Ne5 Rfd8 19. Rfe1 Nc4 20. Bxc4 {Wantoch-Rekowski,J (2305)-Sadowski,M (2152) ICCF 2006 0-1 (52)}) 9. Qc2 Re8 10. Ng5 d4 11. Bd3 Bg4 12. O-O h6 13. Ne4 Rb8 14. Nxf6+ Qxf6 15. f3 Bh5 16. Bh7+ Kh8 17. Be4 Bg6 18. d3 Qe5 19. Kh1 Bxe4 { Sodomski,A (1934)-Kobryn,T ICCF 2008 0-1 (45)}) 8... Bxd5 (8... Nxd5 9. Be2 (9. a3 Bd6 10. Qc2 Nb6 11. Bb5 Bd7 12. Bd3 f5 13. O-O Be6 14. Bb5 Qe8 15. d3 { Reinhart,K (2471)-Ling,A (2062) ICCF 2006 1-0 (51)}) 9... Qe7 (9... f6 10. O-O Qe8 11. Qc2 Rd8 12. Rc1 Bd6 13. Nc3 Qf7 14. Qb1 Rfe8 15. Bd3 Qh5 16. Ne4 Ndb4 17. Bf1 Bf5 18. d3 Bxe4 19. dxe4 Na5 {1/2 (19) Kural,A (2178)-Kudr,R (2222) ICCF 2010}) 10. O-O Rad8 (10... a5 11. d4 a4 12. a3 Bd6 13. Nbd2 Bf5 14. Bc4 Nf6 15. Rc1 Bxa3 16. Bxa3 Qxa3 17. Ne5 Qd6 18. Ndf3 Be4 19. Bb5 a3 {Tago,S (1769)-Brown,H (1811) ICCF 2013 0-1 (25)}) 11. Qc2 Rfe8 12. a3 Ba5 13. Nc3 Nxc3 14. Bxc3 Bxc3 15. Qxc3 Bd5 16. d3 Ne5 17. Nxe5 Qxe5 18. Rfc1 Qg5 (18... Qxc3 19. Rxc3 Re7 20. Rac1 c6 21. g4 f6 22. h4 g6 23. Kh2 Bf7 24. Kg3 Rd5 25. d4 Ra5 26. Rb1 Kf8 27. Bf3 Rd7 28. Rb4 Ke7 29. Be2 h6 30. e4 {Fernández Fornés,J (2257)-Álvarez Villar,H (2327) ICCF 2014 1/2 (41)}) 19. e4 Bc6 20. g3 { Fernández Fornés,J (2240)-Budding,A ICCF 2015 1/2 (45)}) 9. Be2 (9. Nc3 Bxc3 10. Bxc3 Ne4 11. Bb2 Ng5 12. Nxg5 Qxg5 13. h4 Qe7 14. Qg4 f6 15. Bc4 Qf7 16. Rc1 Rad8 17. h5 h6 18. a4 Ne5 19. Bxe5 fxe5 20. f3 Rd6 {Recasens Sánchez,J (2124)-Santos Etxepare,A (1968) ICCF 2008 1/2 (30)}) 9... Qd6 (9... Qe7 10. O-O Rfe8 11. d3 Rad8 12. a3 Bd6 13. Nbd2 Ne5 14. Nd4 Bc5 15. Qc2 Bxd4 16. Bxd4 b6 17. Bb2 Bb7 18. Rfd1 Nfg4 19. e4 c5 20. Nf1 Qg5 21. g3 {Fagerbekk,E (2292) -Taksrud,V (2062) ICCF 2015 1-0 (53)}) 10. a3 (10. Nc3 Bxc3 11. Bxc3 Ne4 12. Qc1 a5 13. O-O f6 14. d3 Nc5 15. d4 Ne4 16. Bb2 Nb4 17. Qb1 Qe6 18. a3 Nc6 19. Qd3 Nd6 20. Rac1 Be4 21. Qd2 a4 {Kural,A (2140)-Bucsa,I (2270) ICCF 2009 1-0 (88)}) (10. O-O Rad8 11. Nc3 Bxf3 12. Bxf3 Ne5 13. Rb1 (13. d4 Nxf3+ 14. Qxf3 Bxc3 15. Bxc3 Nd5 16. Bd2 f5 17. Qd1 c6 18. Qa4 a6 19. Rab1 Rf7 20. Rb2 f4 21. e4 f3 22. exd5 Qg6 23. g3 Qg4 24. Rb3 Qh3 {Wassilieff,H (2235)-Wolf,W (2303) ICCF 2016 1/2 (31)}) 13... c6 14. Be2 Qxd2 15. Na4 Ng6 16. Qxd2 Rxd2 17. Bxf6 gxf6 18. Rxb4 Rxe2 19. Rxb7 Rxa2 20. Nc3 Ra3 {1/2 (20) Avchinikov,V-Halme,O (2256) ICCF 2014}) 10... Ba5 11. Nc3 (11. h3 Rad8 12. O-O Ne4 13. d3 Nc5 14. d4 Ne4 (14... Nb3 15. e4 Be6 16. d5 Nxa1 17. Bxa1 Bxh3 18. gxh3 Qg6+ 19. Kh2 Qxe4 20. Rg1 {Kural,A (2354)-Yüzak,B (1873) ICCF 2014 1-0 (50)}) 15. Nfd2 Qg6 16. Bh5 Qh6 17. Nxe4 Bxe4 18. Bf3 Bxf3 19. Qxf3 f5 20. Rd1 Bb6 21. d5 Na5 22. Be5 Nc4 {Reinhart,K (2471)-Bjazevic,P ICCF 2006 1/2 (31)}) (11. O-O Rfd8 12. Nc3 Bxf3 13. Bxf3 Ne5 14. Rb1 c6 15. d4 Nxf3+ 16. Qxf3 Qe7 17. Rfc1 Rd7 18. Rc2 Re8 19. Na4 {Fagerbekk,E (2207)-Abramov,G (2189) ICCF 2012 1/2 (31)}) 11... Bxf3 ( 11... Bxc3 12. Bxc3 Ne4 13. Bb2 Qg6 14. O-O Rfd8 15. d3 Nc5 16. Nh4 Qg5 17. g3 Bb3 18. Qb1 Rab8 19. a4 {Kural,A (2324)-Almeida,R (2356) ICCF 2013 1-0 (47)}) 12. Bxf3 Ne5 13. O-O c6 14. Be2 Nd3 15. Qc2 Rad8 16. Rad1 Rd7 17. Bxd3 Qxd3 18. Qa4 Bb6 19. Na2 {Braak,J (1906)-Zielinski,M (1994) ICCF 2005 0-1 (57)}) (7... Ne4 8. cxd5 (8. Nc3 Bxc3 9. dxc3 dxc4 10. Bxc4 Qf6 11. Bd3 (11. Qa4 Ne5 12. Be2 Nc5 13. Qb5 Nxf3+ 14. Bxf3 Qb6 15. Qxb6 axb6 16. O-O Be6 17. a3 c6 18. Rfd1 b5 19. e4 Na4 20. Rd2 Rfd8 21. Rxd8+ Rxd8 22. Bc1 Nxc3 {Stapinski,R (1929) -Cernovský,K ICCF 2009 0-1 (49)}) 11... Nc5 12. Bc2 b6 13. Qb1 g6 14. O-O Bb7 15. c4 Qe6 16. Ng5 Qe7 17. Ne4 Ne5 18. Bxe5 Qxe5 19. Nxc5 Qxc5 {Böhnke,H (2037) -Turko,S (2121) ICCF 2009 0-1 (41)}) (8. Qc2 Bf5 (8... Re8 9. Be2 Bf5 10. Qc1 Nc5 11. Ba3 Nd3+ 12. Bxd3 Bxd3 {0-1 (12) Gaspar,F (1587)-Gudok,V (2354) ICCF 2013}) 9. cxd5 Qxd5 10. Qc4 Rad8 11. Qxd5 Rxd5 12. Nc3 Rd6 13. Bb5 Rfd8 14. Bxc6 Rxc6 15. Nd4 Rc4 16. a3 Ba5 17. Rd1 Bxc3 18. Bxc3 Nxc3 19. dxc3 Bg6 { Cottarelli,F (1856)-Gierden,H ICCF 2014 0-1 (33)}) (8. Be2 dxc4 9. Bxc4 Be6 ( 9... Ng5 10. Nxg5 Qxg5 11. O-O Qg6 12. Be2 Rd8 13. Bh5 Qh6 14. d4 Bd6 15. g3 Bh3 16. Re1 Ne5 17. Bc3 Nc4 18. a4 c6 19. Bf3 Nb6 20. a5 Nd5 21. Bd2 {Ziemak, K-Weiner,J (2157) ICCF 2017 1-0 (63)}) 10. Bxe6 fxe6 11. O-O Qd5 12. d3 Rad8 13. Nd4 Nf6 14. Nc3 Bxc3 15. Nxc6 Qxc6 16. Rc1 Qb5 17. Bxc3 Qxd3 18. Qxd3 Rxd3 19. Bxf6 gxf6 {Buczinski,H (2261)-Moskvichev,V ICCF 2010 1/2 (47)}) 8... Qxd5 9. Be2 Rd8 (9... Bg4 10. h3 Be6 11. O-O Rad8 12. d3 Ng5 13. a3 Bd6 14. Nbd2 Nxh3+ 15. gxh3 Bxh3 16. Qa4 Nb4 17. Ne4 Qh5 18. Ng3 Bxg3 19. Qxb4 Qg6 20. Kh1 Bd6 21. Rg1 {Muri,H (2410)-Pessoa,F (2434) ICCF 2008 1/2 (28)}) 10. a3 (10. O-O Nxd2 11. Nbxd2 Bxd2 12. e4 Qa5 13. Bc4 Bf4 14. Qb3 Qh5 15. Qc3 Qg6 16. g3 Bd6 17. Nh4 Be5 18. Nxg6 Bxc3 19. Bxc3 hxg6 20. Rab1 b6 21. Rfc1 Bb7 {Degterev,P (2545)-Sukhodolsky,A (2468) ICCF 2007 1/2 (34)}) 10... Ba5 11. O-O Rd6 (11... Bxd2 12. Qc2 Bf5 13. Nbxd2 Nxd2 14. Qc3 Nxf3+ 15. Bxf3 Qe5 16. Qxe5 Nxe5 17. Bxe5 c6 18. Rfd1 f6 19. Bd4 Rd7 20. Bc5 Rad8 21. Bxa7 Bc2 22. Rd4 Rxd4 23. exd4 {Daatselaar,J (2074)-Yeung,C (1642) ICCF 2008 1-0}) 12. d3 (12. Qc2 Ng5 13. Nh4 Qe4 14. Qxe4 Nxe4 15. d4 Be6 16. Rc1 Ne7 17. Nc3 Nd2 18. Rc2 Rc6 19. Rxd2 Rxc3 {Fagerbekk,E (2189)-Kolanek,R (2166) ICCF 2013 1/2}) 12... Nc5 13. Nc3 Bxc3 14. Bxc3 Nxd3 15. Qb1 Nc5 16. Rd1 Qf5 17. Nd4 Qxb1 18. Raxb1 Nxd4 19. Bxd4 { Belov,P (2142)-Galanov,S (2519) ICCF 2012 1/2}) (7... Bf5 8. a3 (8. Qb3 a5 9. a3 a4 10. Qa2 Be7 11. d4 Na5 12. Nbd2 dxc4 13. Bxc4 Nxc4 14. Qxc4 Ra6 15. O-O Ne4 16. Nxe4 Bxe4 17. Ne5 Bd5 18. Qe2 Rb6 19. f3 c6 {Krüger,J-Haznedaroglu,K (1990) ICCF 2006 0-1 (54)}) (8. Be2 Ne4 (8... dxc4 9. Bxc4 Be7 (9... Qd6 10. Nc3 Qc5 11. Bb3 Bd3 12. Bc2 Ba6 13. Rc1 Qe7 14. Ne2 Bd6 15. O-O Nb4 16. Bb3 Ne4 17. Re1 Nxf2 18. Kxf2 Nd3+ 19. Kg1 Nxb2 {Thomsen,J (1531)-Rihtaric,I (2020) ICCF 2018 0-1 (38)}) (9... Ng4 10. O-O Qd6 11. Nc3 Qh6 12. Be2 a6 13. h3 Nf6 14. Qb3 Bd6 15. Ba3 b5 16. Bxd6 cxd6 17. Nd5 Be6 18. Nxf6+ Qxf6 19. Qc3 Qxc3 20. dxc3 Rfc8 21. a4 {Stapinski,R (2035)-Dymek,W (1867) ICCF 2008 1/2 (28)}) 10. O-O Nb4 11. Ne5 Nd3 12. Qb3 Nxe5 13. Bxe5 Rb8 14. a4 Nd7 15. f4 Nxe5 16. fxe5 Bg6 17. d4 a6 18. a5 b5 19. axb6 Rxb6 20. Qc3 {Uecker,D (2315)-Kutlu,H (2105) ICCF 2015 1/2 (39)}) 9. O-O dxc4 10. Bxc4 Qe7 11. a3 Ba5 12. h3 Rad8 13. d4 Be6 14. Qb3 Bxc4 15. Qxc4 Rfe8 16. Qc2 Qe6 17. Nc3 Bxc3 18. Bxc3 Qd5 19. Rab1 Rd6 {Frydendal,O (1839)-Raan,J (1968) ICCF 2010 1/2}) 8... Be7 (8... Ba5 9. Qb3 d4 10. Bxd4 Nxd4 11. Nxd4 Bxb1 12. Qxb1 Bxd2+ 13. Kxd2 c5 14. Qb2 cxd4 15. exd4 Ne4+ 16. Kc2 Nxf2 17. Rg1 Re8 18. Rc1 Re3 19. Kb1 Ne4 20. Rc2 { Böhnke,H (2136)-Zundel,W (2303) ICCF 2008 0-1}) (8... Bd6 9. cxd5 Nxd5 10. Nc3 (10. Be2 Re8 11. O-O Rb8 12. d4 Na5 13. Nbd2 c6 14. Re1 b5 15. Bf1 Nb6 16. e4 Be6 17. Bc3 Nac4 18. Bxc4 Nxc4 19. d5 {Kural,A (2380)-Sferle,M (2515) ICCF 2016 1/2}) 10... Nxc3 11. Bxc3 Re8 12. Bc4 Rb8 13. d4 Be4 14. O-O b5 15. Bd3 Qe7 16. Bxe4 Qxe4 17. Qb3 a5 18. Rfc1 a4 19. Qb1 Qxb1 20. Rcxb1 {Muri,H (2355) -Shetko,L (2375) ICCF 2012 0-1 (59)}) 9. cxd5 (9. d4 Na5 10. cxd5 Qxd5 11. Bd3 Bxd3 12. Qxd3 c5 13. O-O Rac8 14. Nc3 Qc4 15. Qc2 Rfd8 16. Rad1 Nb3 17. d5 Bd6 18. Qf5 Re8 19. Rd3 Rcd8 20. Rfd1 h6 {Stapinski,R (1929)-Booij,R ICCF 2009 0-1 (35)}) 9... Qxd5 (9... Nxd5 10. Be2 (10. Nc3 Qd6 (10... Re8 11. Be2 Qd6 12. Nxd5 Qxd5 13. O-O Bd3 14. Bxd3 Qxd3 15. Qb1 Rad8 16. Bc3 Rd6 17. Rc1 Qa6 18. d4 Bf6 19. a4 Ne7 20. Qb5 Qxb5 21. axb5 Nc8 22. Bb4 {Buczinski,H (2182)-Gérard,A (1815) ICCF 2011 1-0 (31)}) (10... Qd7 11. Be2 Rfe8 12. O-O Rad8 13. Rc1 (13. d4 h6 14. Re1 a6 15. Nxd5 Qxd5 16. Nd2 Qa5 17. Rc1 Be6 18. h3 Bf8 19. Bf1 Qb6 20. Qc2 Na5 21. Red1 Nc6 22. Nc4 Qa7 23. Bd3 Qb8 24. Nd2 Qc8 {Nicotera, A-Branchi,M ICCF 2011 1-0 (54)}) 13... Nxc3 14. Rxc3 Qe6 15. Re1 a6 16. d4 Na5 17. Qa4 Qb6 18. Ba1 c5 19. h3 h6 20. Rd1 Bd6 21. dxc5 Bxc5 22. Bd3 {Muri,H (2405)-Teichmann,C (2432) ICCF 2008 1/2}) (10... Nb6 11. d4 Na5 12. Bd3 Bxd3 13. Qxd3 Nbc4 14. Qc2 a6 15. O-O b5 16. e4 Re8 17. Nd5 Nxb2 18. Qxb2 Bd6 19. Qb1 c6 20. Ne3 c5 21. Rd1 cxd4 22. Rxd4 {Degterev,P (2530)-Mateka,P (2211) ICCF 2007 1/2 (34)}) (10... Bf6 11. d4 Re8 12. Be2 Nxc3 13. Bxc3 Ne7 14. O-O Nd5 15. Bb2 c6 16. Bd3 Qd7 17. Re1 Bxd3 18. Qxd3 Qe6 19. g3 Nb6 20. e4 Qc4 21. Qd2 Qa4 22. Qc3 {Degterev,P (2460)-Pupke,P ICCF 2006 1/2 (43)}) 11. d4 Rad8 12. Bd3 Qg6 13. Bxf5 Qxf5 14. Qb1 Qh5 15. Nxd5 Rxd5 16. e4 Rd6 17. d5 Nb8 18. Be5 Rg6 19. Bg3 Bf6 20. Ra2 Bc3+ 21. Nd2 Nd7 {Gavrijski,D (2010)-Haznedaroglu,K (1990) ICCF 2006 1/2 (25)}) (10. d4 Na5 11. Bd3 Bxd3 12. Qxd3 Rc8 13. Nbd2 Bf6 14. Ne4 c5 15. Nxc5 Nxe3 16. fxe3 Rxc5 17. O-O Nc4 18. Bc3 Rc8 19. a4 h6 20. e4 Re8 {Lykke,H (2442)-Schakel,C (2416) ICCF 2017 1/2 (43)}) 10... Qd6 (10... Nb6 11. Nc3 (11. d4 Qd6 12. Nbd2 Qg6 13. O-O Be6 14. Rc1 Bd5 15. g3 {Sánchez Bermúdez,R-Garcia Parra,J ICCF 2017 1-0 (34)}) 11... Bd3 12. Nb5 a6 13. Nbd4 Bxe2 14. Nxe2 Qd3 15. Nf4 Qf5 16. O-O Bd6 17. Nh4 Qd7 18. Nh5 f6 19. f4 Nc4 20. Bc3 b5 21. Rf3 Rf7 22. Rg3 {Böhnke,H (2037)-Pavlícek,M (2163) ICCF 2009 1/2 (56)}) (10... Na5 11. Nc3 Bf6 12. d4 c5 13. Rc1 (13. O-O Rc8 14. Rc1 a6 15. Ba1 c4 16. Nd2 Nxc3 17. Bxc3 b5 18. Re1 Bg6 19. Bg4 Rb8 20. Bh5 {Kural,A (2264) -Van tricht,M (2299) ICCF 2011 1/2 (46)}) 13... Nf4 14. exf4 cxd4 15. Nb5 d3 16. Bxf6 gxf6 17. Nh4 Nb3 18. Rc3 Re8 19. Qxb3 Rxe2+ 20. Kd1 Be6 21. Qb1 Qb6 22. f5 {Marshall,I (2137)-Mirbach,T (2232) ICCF 2016 0-1 (49)}) 11. O-O Qg6 12. Ne1 Nb6 13. Nc3 Rad8 14. Rc1 Na5 15. Nb5 c5 16. Nxa7 c4 17. Nb5 Nb3 18. Bh5 Qh6 19. Nd4 Rxd4 20. Bxd4 Nxc1 21. Qxc1 {Vlak,J (2310)-Gacnik,L (2015) ICCF 2008 0-1 (41)}) 10. Be2 (10. Nc3 Qe6 11. Be2 (11. Ne2 Rad8 12. Ng3 Bg6 13. Be2 Nd7 14. Bc3 Nc5 15. O-O Nb3 16. Rb1 Bxb1 17. Qxb1 g6 18. Qc2 b6 19. h4 Nca5 20. Rb1 c5 21. d3 {Kural,A (2389)-Torgersen,T (2183) ICCF 2017 1/2 (50)}) 11... Rad8 12. O-O a6 (12... Ne4 13. Rc1 Nc5 14. d4 Qg6 15. Bc4 Bd3 16. Ne2 Bxc4 17. Rxc4 Nd7 18. Nf4 Qf5 19. Qc2 Qxc2 20. Rxc2 Nb6 21. Rb1 Rfe8 22. Nd3 f6 23. g4 Rd7 24. Bc1 {Fagerbekk,E (2220)-Lilleeng,A (2111) ICCF 2010 1-0 (60)}) 13. d4 Na5 14. Nh4 Bg4 15. Bxg4 Nxg4 16. Nf3 b5 17. h3 Nf6 18. Qc2 Nc4 19. e4 h6 20. Rfe1 Rfe8 21. Bc1 Bf8 {Muri,H (2410)-Latronico,N (2499) ICCF 2009 1/2 (60)}) 10... Rad8 11. O-O Ne4 12. d4 Rd6 13. Nc3 Nxc3 14. Bxc3 Be4 15. Bd3 Rg6 16. Bxe4 Qxe4 17. h3 Rd8 18. Qb1 Qe6 19. Rc1 {Rooms,T (2343)-Evans,G (2397) ICCF 2011 1/2 (29)}) (7... Bg4 8. cxd5 (8. Be2 dxc4 9. Bxc4 Ne4 10. O-O Ng5 (10... Qe7 11. Be2 (11. a3 Ba5 12. Qc2 Rad8 13. Ne5 Nxe5 14. Qxe4 Rde8 15. Bxe5 Qxe5 16. Qxe5 Rxe5 17. d4 Re7 18. Rc1 c6 {Kural,A (2325)-Chocenka,D (2377) ICCF 2012 1/2 (34) }) 11... Rad8 12. d4 Rfe8 13. a3 (13. Qc2 Rd6 14. a3 Ba5 15. Bc3 Bb6 16. Nbd2 Nxc3 17. Qxc3 Nxd4 18. exd4 Bxf3 19. Bxf3 Bxd4 20. Qc2 Bxa1 21. Rxa1 c5 { 1-0 (21) Kural,A (2264)-Nierobisz,J (2353) ICCF 2011}) 13... Ba5 14. Qc2 Nxf2 15. Rxf2 Qxe3 16. Qd3 Bxf3 17. Qxe3 Rxe3 18. Bxf3 Nxd4 19. Bxd4 Rxd4 20. Rb2 Bb6 21. Kf2 Rd1 22. Bxd1 {Stapinski,R (1929)-Pascoal,J (2103) ICCF 2009 0-1 (44)}) (10... Bxf3 11. Qxf3 Nxd2 12. Qg4 g6 13. Nxd2 Qxd2 14. Rab1 Bd6 15. Rfd1 Qc2 16. Bb3 Qf5 17. Qxf5 gxf5 18. Bc2 b6 19. Bxf5 Rad8 20. Kf1 Ne7 21. Rd4 f6 22. Be6+ {Guevara i Pijoan,J (2290)-Fels,B (2205) ICCF 2014 1-0 (42)}) 11. Be2 Qd5 12. Nc3 Bxc3 13. Bxc3 Nxf3+ 14. Bxf3 Bxf3 15. Qxf3 Qxf3 16. gxf3 Rfd8 17. Rab1 b6 18. d4 Rd6 19. Rfc1 Rad8 {Yarmolyuk,Y (2357)-Zakharov,O (2359) ICCF 2008 1/2 (46)}) (8. Qc2 Bxf3 9. gxf3 d4 10. Qd3 Re8 11. Be2 dxe3 12. fxe3 Qxd3 13. Bxd3 Rxe3+ 14. Be2 Rae8 {0-1 (14) Waud,D (1965)-Pope,P (1892) ICCF 2019}) 8... Qxd5 9. Be2 Rad8 10. Bxf6 gxf6 11. a3 Ba5 12. O-O Qh5 (12... Ne5 13. Nxe5 Bxe2 14. Qxe2 fxe5 15. Nc3 Qc6 16. Qg4+ Qg6 17. Qa4 b6 18. Rac1 Kh8 19. d4 { Müller,D (2375)-Owen,C ICCF 2016 1-0 (50)}) 13. h3 Bc8 14. Nd4 Qg5 15. f4 Qg7 16. Nxc6 bxc6 17. f5 Qg5 18. h4 Qg3 19. Rf3 {Degterev,P (2460)-Diele,R ICCF 2006 0-1 (52)}) (7... Qd6) (7... dxc4 8. Bxc4 Bg4 (8... Bf5 9. O-O Qd6 10. a3 Bc5 11. d4 Rfd8 12. Qb3 Bb6 13. Bxf7+ Kh8 14. Nbd2 Rf8 15. Ne5 Nxe5 16. dxe5 Qxd2 17. exf6 g6 18. Bc3 {Stapinski,R (1910)-Niewold,J (1930) ICCF 2016 1-0}) 9. O-O Nd5 10. d4 Re8 11. a3 Bf8 12. Nbd2 Nb6 13. Bd3 Re6 14. Qc2 h6 15. e4 Nb8 16. Rfc1 c6 17. a4 a5 18. Ne5 Bh5 19. Qb3 {Bedbur,H (1839)-Burridge,R (2054) ICCF 2014 0-1 (32)}) (7... Be7 8. d4 (8. Nc3 d4 9. exd4 Re8 10. Be2 Nxd4 11. Nxd4 Qxd4 12. Qc2 Qf4 13. O-O-O Bf5 14. Bd3 Bxd3 15. Qxd3 Rad8 {1/2 (15) Kirk, T-Langgood,S ICCF 2018}) (8. cxd5 Nxd5 (8... Qxd5 9. Nc3 Qh5 10. Be2 Qg6 11. O-O a6 12. d4 Bh3 13. Ne1 Rfe8 14. Kh1 Bf5 15. Bd3 Bd6 16. Bxf5 Qxf5 17. Qf3 Qg6 18. h3 {Bäckström,M (2298)-Vegjeleki,A (2313) ICCF 2006 0-1 (25)}) 9. d4 Re8 10. Be2 Bf5 11. a3 Na5 12. Nbd2 c6 13. O-O Qb6 14. Ra2 Bf6 15. Ba1 Rad8 16. Re1 c5 17. dxc5 Qxc5 18. Nb3 Nxb3 19. Qxb3 {Fagerbekk,E (2302)-Lubas,J (2212) ICCF 2017 1/2 (25)}) 8... Be6 9. Nbd2 Bb4 10. cxd5 Bxd2+ 11. Qxd2 Qxd5 12. Be2 Ne4 13. Qc1 Qa5+ 14. Nd2 Rad8 15. f3 Nxd2 16. Qxd2 Qxd2+ 17. Kxd2 f5 18. Ba3 Rfe8 19. g3 {Kural,A (2138)-Wellen,L (1967) ICCF 2009 1/2 (63)}) 8. a3 (8. Be2 Bg4 (8... dxc4 9. Bxc4 Qe7 (9... Bg4 10. O-O Ne4 (10... Qe7 11. h3 (11. d4 Ne4 12. h3 Bh5 13. a3 Bd6 14. Nbd2 Nxd2 15. Qxd2 Bxf3 16. gxf3 Qg5+ 17. Kh1 Qf5 18. Kg2 Ne7 19. e4 Qg6+ 20. Kh1 Qh5 21. e5 Qxh3+ 22. Kg1 Ng6 {Dagis,M-Siikaluoma,A ICCF 2005 0-1 (27)}) 11... Bh5 12. Be2 a6 13. d4 Nd5 14. Qb3 Rad8 15. Nc3 Nb6 16. Rad1 Na5 17. Qc2 Nac4 18. Ba1 a5 19. Qb3 Ra8 20. Bxc4 a4 21. Bxf7+ Bxf7 22. Qc2 {Fernández Fornés,J (2297)-Kermer,W (2283) ICCF 2010 1/2 (67)}) 11. Be2 f6 12. d3 Nc5 13. d4 Ne4 14. d5 Ne5 15. Nxe5 f5 16. Nxg4 fxg4 17. Bxg4 Nf6 18. Be6+ Kf8 19. Qf3 c6 20. Rd1 Qe7 21. Nc3 {Brisson,P (2010)-Loison,F (1468) ICCF 2020 1-0 (28)}) (9... Be6 10. Bxe6 (10. Be2 Ne4 11. O-O Qe7 12. d3 Rad8 13. a3 Ba5 14. Qc2 Qc5 15. Qc1 Qxc1 16. Rxc1 Nd6 17. Nc3 f6 18. Rab1 Re7 19. Ba1 Bf7 20. Na4 Bb6 21. g3 Ba2 {Uecker,D (2315)-González Barcina,F (2168) ICCF 2015 1-0 (75)}) (10. Qc2 Bxc4 11. Qxc4 Qd5 12. Qxd5 Nxd5 13. O-O Rad8 14. Rc1 a6 15. a3 Be7 16. d4 f5 17. Nbd2 Bf6 18. Rab1 Re6 19. g3 Be7 20. Rc2 {1/2 (20) Kural, A (2264)-Saitou,A (2153) ICCF 2011}) 10... Rxe6 11. O-O Qd3 12. Ne1 Qd6 (12... Qg6 13. Bxf6 Rxf6 14. d4 Rd8 15. a3 Be7 16. Nf3 Qh5 17. Nbd2 Re6 18. Qc2 Rg6 19. Rfb1 b6 20. Rc1 Qg4 21. g3 h5 22. h4 Rdd6 23. Qa4 Qd7 24. Kg2 {Ziemak, K-Marconi,R (1986) ICCF 2017 1-0 (53)}) 13. d4 Nd5 14. a3 Ba5 15. Nd2 Bxd2 16. Qxd2 Rae8 17. Nf3 Rh6 18. Rfe1 Nf6 19. Qd3 Qd5 20. Nd2 Rg6 21. f3 {Richardson, D (1698)-Ikonomopoulos,I ICCF 2014 1/2 (61)}) (9... Na5 10. Be2 a6 (10... b6 11. O-O Bb7 12. d3 Qe7 13. a3 Bd6 14. Nbd2 c5 {1/2 (14) Schmidt,K (2088)-Sabin, F (2119) ICCF 2019}) 11. Qc2 Bd7 12. O-O Rc8 13. Nc3 Bf8 14. Bd3 h6 15. Ne4 Nd5 16. Ng3 Nb4 17. Bh7+ Kh8 18. Qb1 Nc4 19. a3 Nxb2 20. axb4 {Kural,A (2397)-Jean, P (2327) ICCF 2018 1/2 (39)}) 10. a3 Bd6 11. O-O Bg4 12. d4 Ne4 13. Be2 (13. Re1 Na5 14. Bd3 Bxh2+ 15. Kxh2 Nxf2 16. Qd2 Nxd3 17. Qxa5 Bxf3 18. Rf1 Qh4+ 19. Kg1 Bxg2 20. Kxg2 Rxe3 {Boer,J (1792)-Faber,B (2211) ICCF 2017 0-1}) 13... Qf6 (13... Rad8 14. Nc3 Ng5 15. Nd5 Nxf3+ 16. Bxf3 Qh4 17. g3 Bxf3 18. Qxf3 Qe4 19. Qxe4 Rxe4 20. Rfc1 Na5 21. Rab1 c6 22. Nb4 Re7 23. Bc3 Nc4 24. a4 Red7 { Gierth,K (2200)-Ryder,A (2003) ICCF 2010 1-0 (50)}) 14. Nc3 Nxc3 15. Bxc3 Qh6 16. g3 Qh5 17. Rb1 Ne7 18. e4 b6 19. Re1 Ng6 20. Rb5 {Achermann,J (2143) -Zumbado,M (2022) ICCF 2018 1/2 (30)}) (8... Bf5 9. O-O dxc4 10. Bxc4 Qe7 ( 10... a6 11. a3 Bd6 12. d4 Qd7 (12... b5 13. Ba2 Qd7 14. Nbd2 h6 15. Re1 Rad8 16. Rc1 Na5 17. Bc3 Nc6 18. d5 Ne5 19. e4 Bg6 20. Nxe5 Bxe5 21. Bxe5 Rxe5 22. f3 c5 23. dxc6 Qa7+ 24. Kf1 {Fagerbekk,E (2215)-Sychov,A (2270) ICCF 2013 1-0 (40)}) 13. Nbd2 h6 14. Re1 Re7 15. Rc1 Rae8 16. Ba2 {Fagerbekk,E (2215) -Joachimsthaler,K (2115) ICCF 2013 1-0 (34)}) 11. Bb5 a6 12. Bxc6 bxc6 13. a3 Bd6 14. d3 Rab8 15. Bc3 Nd5 16. Qc2 Qe6 17. e4 Nxc3 18. Qxc3 Bxe4 19. dxe4 Rb3 20. Qc2 {Stapinski,R (1929)-Bolda,G (2252) ICCF 2009 0-1 (34)}) 9. O-O dxc4 10. h3 Be6 11. a3 Ba5 12. Nc3 a6 13. d3 cxd3 14. Qxd3 Qxd3 15. Bxd3 Rad8 16. Rfd1 Bb3 17. Rd2 Nd5 18. Rc1 g6 19. Nd4 Ne5 {Bernardara,E (1290)-Maunu,J ICCF 2020 1-0 (25)}) 8... Ba5 (8... Bd6 9. Qc2 (9. d4 dxc4 10. Bxc4 Na5 11. Ba2 Be6 12. Bxe6 Rxe6 13. Nbd2 Nd5 14. g3 Qd7 15. O-O Rh6 16. e4 Nb6 17. Bc3 Nac4 18. a4 Nxd2 19. Bxd2 Re6 20. Qc2 {Stapinski,R (1916)-Neri,E (1789) ICCF 2016 1-0 (31)} ) 9... Bg4 10. cxd5 Bxf3 11. gxf3 Nxd5 12. Bd3 g6 13. Be4 Qg5 14. Qb3 Qg2 15. Rf1 Nb6 16. d3 Qh3 17. Nd2 Rad8 18. Rc1 a5 19. Bxc6 bxc6 20. Rxc6 {Schmidt,K (2125)-Simoncic,L (2212) ICCF 2010 1/2}) (8... Bf8 9. cxd5 Nxd5 10. Be2 g6 11. O-O Bg7 12. Bxg7 Kxg7 13. Qa4 Rb8 14. Rc1 f6 15. d4 Qe7 16. Nbd2 Nb6 17. Qc2 Bf5 18. Qc3 g5 19. Bb5 Nd5 20. Qb3 {Jacewicz,G (2216)-Carlier,P (1473) ICCF 2017 1-0 (45)}) (8... Be7 9. cxd5 Qxd5 10. Nc3 Qf5 11. Be2 Qg6 12. Nh4 Qg5 13. Nf3 Qxg2 14. Rg1 Qh3 15. Qb3 Qh6 16. Bc4 Rf8 17. Nd5 Bd8 18. Rc1 Na5 19. Qc3 Nxc4 20. Nxf6+ {Schmidt,K (2148)-Randolph,D (1895) ICCF 2014 1-0 (29)}) 9. Be2 dxc4 10. Bxc4 Be6 (10... Bg4 11. Be2 (11. O-O Qe7 12. h3 Bh5 13. Be2 Ne4 14. Nc3 (14. Nd4 Bxe2 (14... Bg6 15. Bb5 Nxd4 16. Bxe8 Nf5 17. Ba4 Rd8 18. Qg4 c6 19. Bc2 Nh6 20. Qe2 Nxd2 21. Rc1 Bxc2 22. Rxc2 Nb3 23. Ra2 Qd6 24. Bc3 Bc7 25. g3 Qd1+ 26. Qf1 {Buczinski,H (2041)-Kellner,R ICCF 2020 1/2 (52)}) 15. Nxe2 Rad8 16. d4 Rd6 (16... Qe6 17. Nbc3 Bxc3 18. Nxc3 Ne7 19. Qc2 Nxc3 20. Bxc3 Nd5 21. Rfe1 {Kural,A (2264)-Aninis,T (2335) ICCF 2011 1/2 (32)}) 17. Nbc3 Bxc3 18. Nxc3 Ng5 19. Qg4 f5 20. Qf4 Nd8 21. Kh2 Ndf7 22. Qxf5 Nh6 23. Qb5 c6 24. Qb3+ Kh8 25. Ne2 Ng4+ {Muri,H (2335)-Gullotto,V (2306) ICCF 2013 1-0 (39)}) 14... Bxc3 15. Bxc3 Nxc3 16. dxc3 Qf6 17. Qc2 Bg6 18. Bd3 Bxd3 19. Qxd3 Red8 20. Qc2 Rd6 21. Rab1 b6 22. c4 h6 {Buczinski,H (2182)-Ottesen,S (2410) ICCF 2011 1/2 (35)}) 11... Ne4 (11... Qd6 12. O-O Rad8 13. d4 Ne4 14. h3 Bh5 15. Qc2 Bg6 16. Bd3 Qe7 17. Nbd2 Nxd2 18. Nxd2 Bxd3 19. Qxd3 Ne5 20. Qc2 Bxd2 21. Qxd2 Qg5 22. Qe2 Ng6 23. Rac1 {Stapinski,R (1850)-Maikov,E ICCF 2018 1/2 (75)}) 12. O-O Qe7 13. Nd4 Bxe2 14. Nxc6 Bxd1 15. Nxe7+ Rxe7 16. Rxd1 f5 17. a4 Rd8 18. d4 f4 19. exf4 Red7 20. Kf1 Nc5 21. Ra2 Rd5 22. g3 {Muri,H (2376)-Blank,W (2506) ICCF 2007 1/2 (28)}) 11. Bxe6 (11. O-O Bxc4 12. Re1 Ne4 13. Nc3 Nxc3 14. Bxc3 Bxc3 15. dxc3 Qxd1 16. Rexd1 Rad8 17. h4 Na5 18. Nd4 c5 {0-1 (18) Stapinski,R (1929) -Dorer,M (2390) ICCF 2009}) (11. Be2 Ne4 12. O-O Nc5 13. Nc3 Nd3 14. Rb1 (14. Qc2 Bf5 15. Rad1 Bg6 16. Qb3 Bb6 17. Na4 Qd7 18. Qc3 f6 19. Nh4 Be4 20. Ba1 h6 21. f3 Bh7 22. f4 Rad8 23. f5 {1/2 (23) Kural,A (2140)-Murlasits,M (2200) ICCF 2009}) 14... a6 15. Ba1 b5 (15... Bf5 16. Rxb7 Bb6 17. Na4 Na5 18. Rxb6 cxb6 19. Nd4 Bg6 20. f4 Be4 21. Nc3 Nc5 22. Nxe4 Nxe4 23. d3 Nf6 24. Nf5 b5 25. g4 Re6 26. Nxg7 Rxe3 27. Nf5 {Böhnke,H (2089)-Rozumek,K (1841) ICCF 2009 1-0 (42)} ) 16. a4 Bxc3 17. Bxc3 Bc4 18. Ne1 Nce5 19. f4 Nxe1 20. Qxe1 Nd3 21. Qg3 f6 22. Qg4 Qe7 {Buczinski,H (2201)-Kinchant,K (2292) ICCF 2011 1/2 (36)}) 11... Rxe6 12. Qc2 Ne4 (12... Ng4 13. O-O Nge5 14. Nxe5 Nxe5 15. Bxe5 Rxe5 16. d4 Rh5 17. Nd2 c5 18. Nf3 Qe7 19. Rfd1 Bc7 20. g3 b6 21. Rac1 Bd6 22. a4 Re8 23. dxc5 Rxc5 24. Qd3 {Muri,H (2376)-Savegren,K (2435) ICCF 2007 1/2 (39)}) 13. O-O Qd5 14. d3 Nc5 15. d4 Ne4 16. Nbd2 Bxd2 (16... Nxd2 17. Nxd2 Bxd2 18. Qxd2 Na5 19. Qe2 Nc4 (19... c6 20. Rac1 Nb3 21. Rc2 Rd8 22. Qd3 f5 23. Rc3 Nc5 24. Qb1 Ne4 25. Rc2 Ng5 26. Qd1 b6 27. f3 Rde8 28. Rc3 Nf7 29. Bc1 Nd6 30. Qd3 Nb5 31. Rc2 { Muri,H (2410)-Akdag,M (2413) ICCF 2008 1/2 (85)}) 20. Rfc1 b5 21. a4 c6 22. Bc3 f5 23. Qf3 a5 24. axb5 Qxf3 25. gxf3 cxb5 26. Kf1 Rc6 27. Rcb1 Nxe3+ 28. fxe3 { Muri,H (2376)-Rattinger,T (2456) ICCF 2007 1/2 (53)}) 17. Nxd2 {Muri,H (2410) -Mendl,M (2480) ICCF 2008 1/2}) (5... Re8 6. e3 (6. Nc3 c6 (6... d6 7. Bxf6 Qxf6 8. Nd5 Qd8 9. Nxb4 a5 10. Nd5 c6 11. Nc3 Be6 12. d3 Nd7 13. e3 Ne5 14. Be2 Nxf3+ 15. Bxf3 Qf6 16. Qd2 d5 17. cxd5 Bxd5 {Vegjeleki,A (2313)-Yeung,C (1740) ICCF 2006 1-0}) 7. a3 (7. Qb3 Na6 8. a3 Ba5 9. e3 d6 10. Bd4 Bf5 11. Be2 Nc5 12. Bxc5 dxc5 13. O-O Qb6 14. Qxb6 axb6 15. Rac1 h6 16. d3 Ra7 17. Rfd1 Rea8 18. Nb1 g6 {Walker,J (1932)-Pallett,R (2070) ICCF 2011 1/2 (27)}) 7... Ba5 8. e3 d6 9. Bxf6 Qxf6 10. Rc1 Na6 11. Be2 Nc5 12. O-O Bf5 13. Nd4 Bd3 14. Nb3 Bxc3 15. Bxd3 Bxd2 16. Bxh7+ Kxh7 17. Qxd2 Ne4 {Fels,B (2127)-Nieuweboer,M (1979) ICCF 2010 0-1 (41)}) (6. a3 Bf8 (6... Ba5 7. e3 d6 8. Bb2 Nbd7 9. Be2 Nc5 10. O-O h6 11. Qc2 Qe7 12. d3 c6 13. Nbd2 Bf5 14. h3 Bg6 15. Rfd1 Rac8 16. Nb3 Nxb3 17. Qxb3 {Kural,A (2194)-Dlugolecki,G (2093) ICCF 2010 1-0 (66)}) (6... Be7 7. e3 c5 8. Nc3 Nc6 9. Bg3 b6 10. Be2 Bb7 11. O-O d5 12. cxd5 Nxd5 13. Qc2 Nxc3 14. dxc3 Qc8 15. Rad1 Qe6 16. Rfe1 Rad8 17. Bb5 h6 18. h3 {Yarmolyuk,Y (2318) -Moskalenko,E (2242) ICCF 2020 1/2}) 7. Nc3 Nc6 8. Bxf6 (8. Bf4 Nh5 9. Be3 b6 10. Bg5 f6 11. Be3 Ne5 12. Nxe5 fxe5 13. g3 Bb7 14. f3 Nf6 15. Bh3 e4 16. fxe4 Nxe4 17. Nxe4 Bxe4 18. O-O {Kural,A (2194)-Tsang,H (2242) ICCF 2010 1/2 (50)}) 8... Qxf6 9. d4 g6 10. e3 Bg7 11. Be2 b6 12. O-O Bb7 13. Rc1 Rac8 14. Qa4 d6 15. Nd2 Na5 16. Bf3 Bxf3 17. Nxf3 c6 {Rooms,T (2343)-Anderson,J (2273) ICCF 2011 1-0 (41)}) (6. g3 Nc6 7. Bc3 Bxc3 8. Nxc3 d5 9. cxd5 Nxd5 10. Nxd5 Qxd5 11. Qb3 Qxb3 12. axb3 Nb4 13. O-O-O Be6 14. Kb2 Bd5 15. Rc1 c6 {1/2 (15) Bäckström,M (2298)-Yeung,C (1740) ICCF 2006}) 6... Bf8 (6... Nc6 7. Bb2 d6 8. Be2 Bf5 9. a3 Ba5 10. O-O {Degterev,P (2419)-Berger,G (1939) ICCF 2013}) (6... c5 7. Nc3 Ng4 8. Bg3 Bxc3 9. dxc3 Nc6 10. Bd3 Nge5 11. Nxe5 Nxe5 12. Be2 d6 13. O-O Bf5 14. f3 Qe7 15. e4 Bd7 16. f4 Nc6 17. Bd3 {Kural,A (2403)-Cavajda,I (2470) ICCF 2018 1-0 (52)}) 7. Be2 (7. Nc3 Nc6 8. Bg3 (8. Bxf6 Qxf6 9. d4 b6 10. a3 Bb7 11. Be2 Na5 12. O-O c5 13. Nd5 Qh6 14. dxc5 Bxc5 15. Qc2 Rac8 16. Rfd1 d6 17. Qd3 Nc6 18. Qb3 Ne5 19. Rac1 Ng4 {Marshall,I (2137)-Schulze,P (2045) ICCF 2016 1/2 (36)}) 8... d5 9. cxd5 Nxd5 10. Bc4 Nxc3 11. dxc3 Bd6 12. Qb3 Be6 13. Bxe6 Rxe6 14. Rd1 b6 15. O-O Qe7 16. Bxd6 Rxd6 17. Rxd6 Qxd6 18. Rd1 Qf6 {Degterev,P (2545)-Korzh,L (2304) ICCF 2008 1/2 (28)}) 7... g6 8. Nc3 ( 8. O-O Bg7 9. Nc3 d6 10. Bg3 h6 11. h3 Nh5 12. Bh2 Bxc3 13. dxc3 Nd7 14. Nd4 Nhf6 15. f3 Nc5 16. e4 (16. Qd2 Nh5 17. Nb3 Ne6 18. g4 Nhg7 19. e4 h5 20. Kg2 b6 21. Nd4 Bb7 22. Bd3 Nc5 23. Bc2 Ba6 24. Bb3 Bb7 25. Rfe1 Qd7 26. Bc2 f6 27. Rad1 hxg4 {Muri,H (2398)-Fessler,S (2331) ICCF 2009 0-1 (58)}) 16... b6 17. Qd2 Kg7 18. Nc6 Qd7 19. Nb4 Ng8 {Valinová,M-Craciun,G (2180) ICCF 2007 1-0 (42)}) 8... d6 9. Bg3 Bg7 10. d4 c5 11. O-O Nc6 12. Rb1 cxd4 13. Nxd4 Nxd4 14. exd4 Ne4 15. Nxe4 Rxe4 16. d5 b6 17. Bd3 {Marshall,I (2137)-Rautenberg,H (2176) ICCF 2016 1/2 (27)}) (5... c5 6. Nc3 Bxc3 7. Bxc3 Re8 8. e3 Nc6 9. Be2 Ne4 10. Bb2 d5 11. cxd5 Qxd5 12. Qa4 Nd6 13. Rc1 b5 14. Qc2 Qxa2 15. Qc3 f6 16. O-O Ne4 17. Qa3 {Böhnke,H (2096)-Casella,S (1983) ICCF 2008 0-1 (30)}) (5... d6 6. Bb2 Bf5 7. e3 Nbd7 8. Be2 Re8 9. O-O Nc5 10. d3 h6 11. Nc3 c6 12. Rb1 Rb8 13. Na4 Na6 14. Nd4 Bh7 15. Nb3 d5 16. c5 b5 17. cxb6 {Jean,L-Pinchon,F ICCF 2013 0-1 (42)}) (5... Ne4 6. Qc2 f5 7. e3 Nc6 8. Bb2 d6 9. Be2 Qe7 10. a3 Ba5 11. O-O f4 12. Bd3 Bf5 13. exf4 Qe6 14. Nh4 Rae8 15. c5 g6 16. cxd6 cxd6 17. Nxf5 { Recasens Sánchez,J (2124)-Duveau,A ICCF 2008 1-0 (27)}) (5... Ng4 6. Bb2 Nc6 7. Nc3 d6 8. e3 Be6 9. Be2 Nf6 10. Qc2 d5 11. a3 Bxc3 12. Bxc3 Ne4 13. Bb2 Nd6 14. Qc3 Ne8 15. c5 Nf6 16. g4 Qd7 17. Rg1 {Zhuravlev,K (2160)-Bas Fortuny,M (2143) ICCF 2015 1-0 (32)}) (5... c6 6. Bxb8 Rxb8 7. Qa4 Be7 8. Qxa7 Qc7 9. Nc3 d5 10. c5 Ne4 11. Nxe4 dxe4 12. Nd4 Qe5 13. Nb3 Be6 14. Rb1 Bxb3 15. axb3 Ra8 16. Qxb7 Ra1 17. Rd1 {Flewelling,H (1786)-Nemec,Z (2148) ICCF 2016 0-1}) 6. e3 (6. a3 Bd6 7. Bxd6 cxd6 8. e3 Be6 9. cxd5 Nxd5 10. a4 Nc6 11. Be2 Rc8 12. O-O Qe7 13. Na3 Ndb4 14. d3 h6 15. Qd2 a5 16. Rfc1 Rfe8 17. d4 Na7 {Muri,H (2355) -Teichmann,C (2380) ICCF 2012 1/2}) 6... Re8 (6... c5 7. a3 (7. Be2 Nc6 8. Bb2 d4 9. exd4 (9. Qc2 Bg4 10. O-O Re8 11. Kh1 Ne5 12. exd4 Nxf3 13. Bxf3 Bxf3 14. gxf3 cxd4 15. Qf5 Qd6 16. d3 Rad8 17. Rg1 Re2 18. Bc1 Rxf2 19. Bf4 Qc6 20. Nd2 Bxd2 {Rajala,O (1861)-Kuosa,N ICCF 2007 0-1 (30)}) 9... cxd4 10. Qb3 Re8 11. Kf1 (11. Qd3 Bc5 (11... Nd7 12. O-O Nc5 13. Qc2 Rxe2 14. Na3 d3 15. Qd1 Ne4 { 0-1 (15) Tago,S-Petruzzelli,R (2005) ICCF 2009}) 12. h3 h6 13. Ba3 b6 14. O-O Nh5 15. Bd1 Nf4 16. Qc2 d3 17. Qb2 Nd4 18. Bxc5 bxc5 19. Nc3 Nxh3+ 20. Kh2 Nxf3+ 21. Bxf3 Qd6+ 22. g3 Rb8 {Flewelling,H (1796)-Brown,P (1679) ICCF 2015 1-0 (35)}) 11... Ne4 12. d3 Nc5 13. Qc2 Bf5 14. Kg1 Ne5 15. Nbd2 Nexd3 16. Bxd3 Bxd3 17. Qd1 Be2 18. Qc1 Nd3 {Andreoli,A-Caponi,S ICCF 2012 0-1 (28)}) (7. Bxb8 Rxb8 8. a3 Ba5 9. Be2 d4 10. Qb3 Bf5 11. O-O d3 12. Bd1 Ne4 13. Ne1 Qf6 14. Ra2 b5 15. cxb5 Be6 16. Qb2 Bxa2 17. Qxf6 gxf6 18. f3 Bxb1 {Moeckel,J (1757) -Moyseenko,T ICCF 2010 0-1 (35)}) 7... Ba5 8. cxd5 (8. Qc2 d4 9. Bd3 Nc6 10. Bg3 Bg4 11. Ng5 h6 12. Ne4 dxe3 13. fxe3 Re8 14. O-O Nxe4 15. Bxe4 Nd4 16. exd4 Qxd4+ 17. Bf2 Qxe4 18. Qxe4 Rxe4 19. Bxc5 Rxc4 {Cottarelli,F (1856)-Drenthen,A ICCF 2014 0-1 (26)}) (8. h3 d4 9. Bxf6 Qxf6 10. Be2 d3 {0-1 (10) Odermatt, C-Lang,F ICCF 2013}) (8. Bc3 d4 9. exd4 Re8+ 10. Be2 Bg4 11. O-O cxd4 12. Bxa5 Qxa5 13. d3 Nc6 14. h3 Bh5 15. Nbd2 Rad8 16. Nb3 Qc7 17. Qc2 Qd6 18. c5 Qd5 19. Rfe1 Rxe2 {Slupski,M-Sutton,A (2215) ICCF 2011 0-1 (30)}) 8... Nxd5 9. Qc2 (9. Be2 Nc6 10. Bb2 Bf5 11. O-O h6 (11... a6 12. d3 (12. Qc1 Rc8 13. Nc3 Nf6 14. Na4 Nd7 15. d3 Re8 16. Rd1 Bg4 17. h3 Bh5 18. Kf1 b5 19. g4 Bg6 20. Nxc5 Ne7 21. d4 Nd5 22. a4 Bb4 23. Ra2 Nxc5 {Waite,D (2099)-Hansson,O ICCF 2013 0-1 (36) }) 12... Re8 13. Nbd2 Bc3 14. Qc2 Qf6 15. Bxc3 Nxc3 16. Nb3 c4 17. Nbd4 Nxe2+ 18. Qxe2 Nxd4 {0-1 (18) Thau,O (1771)-Gutkind,K ICCF 2019}) 12. Qb3 Re8 13. Nc3 Nxc3 14. Bxc3 Bxc3 15. Qxc3 b6 16. Bb5 Be4 17. Kh1 Re6 18. Rad1 Bxf3 19. gxf3 Qd5 20. e4 Qd4 {Negroni,G-Volkov,E (2059) ICCF 2012 0-1 (26)}) 9... Nc6 (9... Nd7 10. Bb2 N5f6 11. Be2 Bc7 12. Nc3 b6 13. O-O Bb7 14. a4 a6 15. d4 cxd4 16. Nxd4 Rc8 17. Rfd1 Qe7 18. g3 Rfe8 19. Ba3 Qe5 20. Qb3 (20. Rac1 Bd6 21. Bxd6 Qxd6 22. Qb2 Qe5 23. Bf3 Bxf3 24. Nxf3 Qb8 25. Nd5 Nxd5 26. Rxd5 Nc5 27. a5 Qa8 28. Qd4 Ne6 29. Rxc8 Rxc8 30. Qd1 b5 31. Rd6 {1/2 (32) Ilzig,G (2103) -Bieliauskas,M (2128) ICCF 2016}) 20... Bd8 21. Rac1 {Muri,H (2410)-Kameneckas, K (2427) ICCF 2008 1/2 (39)}) (9... Be6 10. Be2 (10. Qb2 g6 11. Be2 Nd7 12. Bg7 (12. Bc3 Nxc3 13. Nxc3 Rb8 14. a4 Qf6 15. O-O a6 16. d4 Qe7 17. Rfc1 Rfc8 18. h3 Nf6 19. Nd1 Ne4 20. dxc5 Nxc5 21. Nd4 {Ringsborg,A (2280)-José Queraltó,D ICCF 2020 1/2 (39)}) 12... Re8 13. O-O a6 14. a4 Rc8 15. Nc3 Nf4 16. exf4 Kxg7 17. Ne4+ Nf6 18. Nxf6 Qxf6 19. Qxb7 c4 20. Qxa6 Qd8 21. Ne5 Bd5 {Kural,A (2401) -Chamaev,A (2419) ICCF 2017 1/2 (76)}) 10... Nd7 11. Bb2 a6 12. O-O b5 (12... Qe7 13. Nc3 b5 (13... Nxc3 14. dxc3 Bd5 15. Rfd1 Bc6 16. c4 f5 17. Bd3 g6 18. Rab1 Rae8 19. Ba1 Bc7 20. Qb2 Nf6 21. h3 h6 {Schmidt,K (2088)-Päßler,H (2054) ICCF 2019 0-1 (49)}) 14. a4 b4 15. Nxd5 Bxd5 16. Bc4 Bxc4 17. Qxc4 Nb6 18. Qg4 f5 19. Qf4 c4 20. Nd4 Qd7 21. Qe5 c3 22. Qxa5 cxb2 23. Rab1 Nxa4 24. Qxb4 { Buczinski,H (1988)-Zawadka,Z (2187) ICCF 2018 0-1 (40)}) 13. Rc1 Re8 14. a4 Nb4 15. Qe4 Na2 16. Rf1 b4 17. Bc4 b3 18. Bxe6 Rxe6 19. Qf5 Qe7 20. d4 Rc8 21. dxc5 {Kural,A (2375)-Tiemann,C (2378) ICCF 2016 1/2 (33)}) (9... Qe7 10. Qb2 f6 11. Bg3 Nc6 12. Be2 Be6 13. O-O Rfd8 14. Rc1 Rac8 15. d3 Bf7 16. Nbd2 Nd4 17. Bd1 Bxd2 18. Nxd2 Nf5 19. Nf1 b6 20. Bg4 Nxg3 21. Nxg3 {Kural,A (2351)-Vera-Cruz Jr,A (2332) ICCF 2014 1/2 (25)}) 10. Bb2 Qe7 (10... Bg4 11. Qxc5 (11. Be2 Re8 ( 11... Rc8 12. h3 Bh5 13. O-O a6 14. Rc1 {1/2 (14) Kural,A (2403)-Janisch,M (2424) ICCF 2018} Bg6 15. Qb3 Qd6 16. a4 Bc7 17. d4 cxd4 18. Ba3 Ndb4 19. Rxc6 Qxc6 20. Bxb4 Qc1+ 21. Bf1 dxe3 22. Qxe3 Qxe3 23. fxe3 {Kural,A (2380)-Pessoa, F (2520) ICCF 2016 1/2 (69)}) 12. O-O (12. h3 Bh5 13. O-O Rc8 14. Rc1 (14. Nc3 Bg6 15. Qb3 Nb6 16. Rac1 c4 17. Qa2 a6 18. Rfd1 Rc7 19. Ba1 Kh8 20. Nb1 f6 21. Bc3 Bf7 22. Qa1 Rd7 23. a4 h6 24. Bf1 Bh5 25. Be2 f5 {Kural,A (2400)-Muñiz Pardiño,A (2381) ICCF 2018 1/2 (32)}) 14... a6 (14... b6 15. Qd1 (15. Qa4 Qd6 16. Nc3 Nxc3 17. Bxc3 Bxc3 18. Rxc3 Bxf3 19. Bxf3 Qxd2 20. Rc2 Qd6 21. Rd1 Qc7 22. Bxc6 Qxc6 23. Qxa7 Ra8 24. Qd7 {1/2 (24) Kural,A (2404)-Ilyin,P (2415) ICCF 2018}) 15... h6 16. Nc3 Nxc3 17. Bxc3 Bxc3 18. Rxc3 Qf6 19. Rac1 Rcd8 20. d3 Ne5 21. Nxe5 Bxe2 22. Qxe2 Rxe5 23. a4 a5 24. Rc4 Rg5 25. Rd1 Qc6 26. g3 { Kural,A (2389)-Samerdokas,A (2453) ICCF 2017 1/2 (28)}) 15. Qb3 Qd6 16. Qc4 Qe6 17. Nc3 Nxc3 18. Bxc3 Qxc4 19. Bxc4 Bxc3 20. Rxc3 {1/2 (20) Kural,A (2389) -Betker,J (2438) ICCF 2017}) 12... Rc8 13. Nc3 Nf6 (13... Nxc3 14. Bxc3 Bxc3 15. dxc3 Qf6 {1/2 (15) Skerlík,S (2241)-Kibalnichenko,S (2153) ICCF 2017}) 14. h3 Bh5 15. Rac1 Nb4 16. axb4 cxb4 17. Bb5 Re7 18. Rfd1 Bxf3 19. gxf3 Re5 20. Bf1 Rg5+ 21. Bg2 b5 22. f4 Rgc5 {Degterev,P (2346)-Berza,S (2385) ICCF 2006 1/ 2 (67)}) (11. Bd3 h6 12. Bh7+ Kh8 13. Bf5 Bxf3 14. gxf3 Re8 15. Rg1 Nd4 16. Kf1 Qb6 17. Ra2 Qa6+ 18. Bd3 Qe6 19. Rg3 Bc7 20. Qxc5 Bxg3 21. Qxd4 Nf6 {0-1 (21) Buczinski,H (1988)-Ermakov,V (2300) ICCF 2018}) 11... Rc8 12. Qb5 a6 13. Qb3 Nf4 14. Qa4 g5 15. Bc3 Bxf3 16. gxf3 Bxc3 17. Nxc3 Ne5 18. Qd1 Rxc3 19. dxc3 Qc8 20. Be2 Ng2+ 21. Kf1 Qh3 22. Qd6 {Böhnke,H (2150)-Kochemasov,A (2341) ICCF 2007 0-1 (25)}) (10... Qd6 11. Be2 Nde7 12. O-O Bf5 13. d3 Rfd8 14. Rd1 Rac8 15. Nbd2 Bxd3 16. Bxd3 Qxd3 17. Qxc5 Rd5 18. Qc4 Rcd8 19. Nd4 Qxc4 {1/2 (19) Böhnke,H (2137)-Hansen,K (2232) ICCF 2006}) 11. Bd3 (11. Be2 Bg4 (11... g6 12. O-O Bf5 13. Bd3 Bxd3 14. Qxd3 Rfd8 15. Qc2 Rac8 16. Rc1 (16. d3 Bc7 17. Nbd2 b5 (17... a6 18. Rac1 Ne5 19. Ba1 b5 20. Qb2 f6 21. Qa2 Nxf3+ (21... Kg7 22. Nxe5 Bxe5 {Müller,D (2303)-Fister,B (2148) ICCF 2017 1/2 (35)}) 22. Nxf3 Qe6 (22... Kg7 23. Rfd1 Bd6 24. Re1 Nb6 25. h3 Nd7 26. Ng5 Re8 27. a4 b4 28. f4 h6 29. Ne4 Bb8 30. a5 Kh7 31. Qd5 f5 32. Nd2 Qe6 33. Qf3 Qf7 34. Nc4 {Kural,A (2400) -Grayland,S (2393) ICCF 2018 1-0 (63)}) 23. Rfd1 Kf7 24. Qd2 (24. Qb1 Bd6 25. h3 Nb6 26. Re1 Kg8 27. e4 Nd7 28. d4 c4 29. Rc3 Bf4 30. Rc2 Re8 31. Bc3 Nb6 32. d5 Qf7 33. Nd4 Be5 34. Ne6 Bxc3 35. Rxc3 Nd7 {Kural,A (2400)-Mercader Martínez, J (2403) ICCF 2018 1/2 (36)}) 24... Nb6 25. h4 {1/2 (25) Kural,A (2400) -Harabor,M (2373) ICCF 2018}) 18. Rac1 (18. Rab1 a6 19. a4 Ncb4 (19... b4 20. Nc4 Nf6 21. Rfc1 Ng4 22. a5 Nge5 23. Ncxe5 Nxe5 24. Nxe5 Bxe5 25. Bxe5 Qxe5 26. d4 {1/2 (26) Kural,A (2380)-Ergenekon,M (2419) ICCF 2016}) 20. Qb3 bxa4 21. Qxa4 Nxd3 22. Qxa6 Nxb2 23. Rxb2 Ra8 24. Qc4 Ba5 25. Ra2 Nb6 26. Qb5 Bxd2 27. Rxd2 {Kural,A (2404)-Jasinski,M (2419) ICCF 2018 1/2 (39)}) 18... Ne5 19. Nxe5 Bxe5 20. Bxe5 Qxe5 21. Ne4 c4 22. d4 Qe7 23. Qb1 Rb8 24. Nc5 Rb6 25. Rfe1 a6 26. Qb2 h5 27. Qd2 Qg5 {Destruels Moreno,V (2368)-Peñafiel López,J (2424) ICCF 2013 1/2 (42)}) 16... b6 (16... a6 17. a4 Bc7 (17... Ncb4 18. Qc4 Nf6 19. Qh4 Nfd5 20. Qc4 Rc6 21. Na3 Nb6 22. Qc3 f6 23. Qb3+ Qf7 24. Qxf7+ Kxf7 25. Bc3 g5 26. g4 Rd7 27. Kg2 Re6 28. h4 gxh4 29. Rh1 {Kural,A (2401)-Dutra,A (2419) ICCF 2017 1/2 (40)}) 18. Na3 Ncb4 19. Qb3 Qe4 20. Rc4 (20. Rab1 Qd3 21. Ba1 b6 22. Qb2 f6 23. h3 Bd6 24. Ne1 Qf5 25. Qb3 Kg7 26. d3 Qe6 27. d4 Be7 28. Nf3 Nc7 29. e4 Qxb3 30. Rxb3 b5 31. axb5 axb5 {Kural,A (2380)-Grigoryev,V (2497) ICCF 2016 1/2 (51)}) 20... Qd3 21. Qd1 Re8 22. h3 {Kural,A (2401)-Schmidt,T (2414) ICCF 2017 1/2}) 17. d3 Nxe3 18. fxe3 Qxe3+ 19. Qf2 Rxd3 20. Qxe3 Rxe3 21. Kf2 Rd3 { 0-1 (21) Ladeira,P-Weiss,L (2043) ICCF 2013}) 12. O-O Rfd8 (12... Rad8 13. Nc3 (13. h3 Bh5 14. Nc3 Bxc3 (14... Nxc3 15. Bxc3 Bxc3 16. Qxc3 Ne5 17. Nxe5 Bxe2 18. Rfe1 Ba6 19. d4 Rfe8 (19... cxd4 20. exd4 Qd6 21. Rad1 {1/2 (21) Schmidt,K (2151)-Klewe,W (2191) ICCF 2017}) 20. Rad1 cxd4 21. exd4 Qd6 22. Re3 Re7 23. Ng4 Rc7 24. Qa5 Rdc8 25. Ree1 h6 26. Ne3 {Kural,A (2349)-Grinev,V ICCF 2014 1/ 2 (34)}) (14... Nc7 15. Rac1 Ne6 16. Rfd1 a6 17. a4 Bg6 18. Qb3 Rd7 19. d4 cxd4 20. Ba3 Bb4 21. Bxb4 Qxb4 22. Qxb4 Nxb4 {1/2 (22) Kural,A (2403)-Beecham,C (2468) ICCF 2018}) 15. Bxc3 b6 16. Rac1 (16. Rfd1 Nxc3 17. Qxc3 Rd6 18. d3 Rfd8 19. Rd2 Bxf3 20. Bxf3 Ne5 21. Be2 Qf6 22. Rc1 g6 23. Qc2 h5 24. Rcd1 Nc6 25. Bf3 Na5 26. a4 Qe6 27. d4 Qc4 {Kural,A (2400)-Reyes Maldonado,C (2355) ICCF 2018 1/2 (34)}) (16. Rad1) (16. Rfe1 Bg6 17. d3 Nxc3 18. Qxc3 Rd6 19. Rad1 Rfd8 20. d4 Qf6 21. Bb5 Be4 22. Nd2 Bf5 23. e4 Nxd4 24. e5 {Fagerbekk,E (2302) -Lemke,B (2121) ICCF 2017 1/2 (34)}) 16... Nxc3 (16... h6 17. Rfd1 Nxc3 18. Qxc3 Rd6 19. g4 Bg6 20. d4 cxd4 21. Nxd4 Nxd4 22. Rxd4 Rxd4 23. Qxd4 Qxa3 24. Rc7 a5 25. Bf1 Qa2 26. Rc6 Qb1 27. Rxb6 Qc1 {Fagerbekk,E (2296)-Davidov,A (2331) ICCF 2015 1/2 (52)}) 17. Qxc3 Rd6 18. Rfe1 Bxf3 (18... Re6 19. Qb2 Bxf3 20. Bxf3 Ne5 21. Be4 Ng6 22. Bf5 Rd6 23. d4 Qf6 24. Bxg6 hxg6 25. Red1 Rfd8 26. Rc4 Rd5 27. Qc3 Qd6 28. a4 Rd7 29. Rd2 Qf6 30. Rd1 {Kural,A (2324)-Lyukmanov,V (2387) ICCF 2013 1/2 (53)}) 19. Bxf3 Ne5 20. Be4 Ng6 (20... Qf6 21. Red1 Rfd8 22. f4 Nd7 23. Bf3 Qe7 24. d4 cxd4 25. Rxd4 {1/2 (25) Kural,A (2400)-Kulick,N (2389) ICCF 2018}) 21. Bxg6 hxg6 (21... Rxg6 22. d4 Qd7 23. Kh1 (23. Kh2 Qd5 24. Rg1 cxd4 25. Qxd4 Qa2 26. e4 Qxa3 27. Rc7 Rd6 28. Rxa7 Rxd4 29. Rxa3 Rxe4 30. Rb1 Re6 31. Ra6 Rb8 32. Rb5 Kf8 33. g4 Rb7 34. Ra8+ Re8 {Schmidt,K (2151) -Varkentin,W (2311) ICCF 2017 0-1 (70)}) 23... Qd5 24. f3 cxd4 25. exd4 Rd8 26. Rcd1 Rc6 27. Qd3 g6 {1/2 (27) Kural,A (2394)-Rodríguez Fraga,Y (2440) ICCF 2019 }) 22. d4 cxd4 23. exd4 Qd7 24. Re4 Rd8 25. Rd1 f5 26. Rf4 Rd5 27. Qb3 b5 28. Re1 a5 29. Re5 a4 30. Qg3 Rxe5 31. dxe5 Qd2 32. Rf3 Qe1+ 33. Kh2 Rd1 34. Qxg6 { 1/2 (34) Kural,A (2409)-Jónsson,K (2346) ICCF 2020 Irregular Openings}) 13... Nxc3 14. Bxc3 Bxc3 15. Qxc3 Rd7 16. Rfd1 Rfd8 17. d3 b6 18. h3 Bf5 19. Ra2 Rd6 20. Rad2 Be6 21. d4 Qf6 22. Qc2 cxd4 23. Qa4 Qg6 24. Nxd4 {Muliuolis,V (1933) -Debnár,I (2042) ICCF 2020 1/2 (31)}) 13. h3 Bh5 14. Nc3 (14. Rc1 b6 15. Nc3 ( 15. Qf5 Bg6 16. Qg4 Nf6 17. Qh4 Bd3 18. Bxd3 Rxd3 19. Qa4 Rc8 20. Qc2 Qd7 ( 20... Rd5 21. Nc3 Bxc3 22. Qxc3 Qe6 23. Qc2 Ne4 24. d4 h6 25. dxc5 bxc5 { Müller,D (2303)-Salnaitis,A (2114) ICCF 2017 1/2 (50)}) 21. Nc3 Bxc3 22. Bxc3 Ne4 23. Ne1 Nxc3 24. Qxd3 {1/2 (24) Kural,A (2401)-Hengl,C (2420) ICCF 2017}) 15... Bxc3 16. Bxc3 Nxc3 17. Qxc3 Rac8 18. Ra2 Qd6 19. Rac2 h6 20. Qb3 Rc7 21. Rc3 Qf6 22. d3 Bxf3 23. Bxf3 Ne5 24. Be4 Rcd7 25. a4 Rd6 {Ilzig,G (2264) -Alascio Ruiz,J (2270) ICCF 2017 1/2 (34)}) 14... Nxc3 (14... Bxc3 15. Bxc3 Nxc3 16. Qxc3 Rac8 17. Rfe1 b6 18. d3 {Müller,D (2309)-Knöppel,B (2043) ICCF 2017 1/2 (32)} (18. Rac1 Bxf3 (18... h6 19. d3 Qd6 20. Red1 Ne5 21. g4 Nxf3+ 22. Bxf3 Bg6 23. d4 c4 24. e4 Qf4 25. Re1 b5 26. d5 f6 27. Rcd1 a6 28. Re3 { 1/2 (28) Kural,A (2400)-Volodarsky,Y (2379) ICCF 2018}) 19. Bxf3 Ne5 20. Be2 g6 21. Red1 Rc6 22. d3 Rcd6 23. Rc2 h5 24. Rcd2 Nc6 25. Qb2 Qe6 26. Qc3 Qe7 27. Qb2 Qe6 28. Qc3 Ne7 29. Bf3 Nd5 {Kural,A (2404)-Williams,T (2447) ICCF 2018 1/ 2 (33)}) 18... Qd6 19. Rad1 b5 20. d4 cxd4 21. exd4 b4 22. Qa1 b3 23. d5 { Kural,A (2419)-Horvat,M (2459) ICCF 2020 1/2 (27)}) (14... Nb6 15. Rfd1 Bg6 16. Qb3 Rac8 17. d3 Kh8 18. Na4 {1/2 (18) Kural,A (2375)-Kurgansky,V (2374) ICCF 2016}) 15. Bxc3 Bxc3 16. dxc3 Bg6 17. Qb2 b6 18. Rfd1 (18. Rad1 h6 19. Rxd8+ Rxd8 20. Rd1 Rxd1+ 21. Bxd1 Na5 22. Be2 Nb7 23. Nd2 Nd6 {1/2 (23) Schmidt,K (2088)-Huzita,S (2288) ICCF 2019}) 18... Na5 19. c4 f6 20. Qc3 Rab8 21. Rac1 Bf7 22. Qc2 Rxd1+ {Destruels Moreno,V (2368)-De Carlos Arregui,I (2334) ICCF 2013 1/2 (29)}) (11. Bb5 Bg4 (11... Rd8 12. Bxc6 bxc6 13. O-O Bc7 14. d3 Rb8 15. Nbd2 Ba6 16. Rfc1 Bxd3 17. Qxd3 Rxb2 18. Rab1 Nb6 19. Qxd8+ Bxd8 20. Rxb2 Qc7 21. h3 h6 22. Rbc2 Be7 23. Rc3 {Zdziech,M (2151)-Block,B (2046) ICCF 2020 1/2 (35)}) 12. Bxc6 Bxf3 (12... bxc6 13. Ne5 Bh5 14. O-O Bc7 15. Qf5 Rab8 16. Qxh5 Rxb2 17. Nf3 g6 18. Qg4 Be5 19. Qc4 Rfb8 20. Nxe5 Qxe5 21. Qxc5 R2b5 22. Qd4 {Lykke,H (2442)-Szczepanski,Z (2471) ICCF 2017 1/2 (39)}) 13. gxf3 bxc6 14. Rg1 g6 15. Kf1 Rfd8 16. Nc3 Bxc3 17. Bxc3 Nxc3 18. Qxc3 Rd5 19. Rc1 Rad8 20. Rg4 Rxd2 21. Qxc5 Qc7 22. Rg3 Qb7 {Böhnke,H (2150)-Eiben,P (2521) ICCF 2007 0-1 (43)}) 11... h6 (11... g6 12. Qxc5 (12. O-O Rd8 13. h3 Be6 14. Rc1 Rac8 15. Bf1 Nb6 16. d3 Bd5 17. Nbd2 Nd7 18. Nb3 Bb6 19. a4 Nb4 20. Qc3 f6 21. e4 Bf7 22. a5 Bc7 23. Nxc5 Na2 {Graham,S (2178)-Lahdenmäki,L (2072) ICCF 2009 1/2 (59) }) 12... Qxc5 {0-1 (12) Cooper,R (2038)-Smyth,S (1872) ICCF 2013}) 12. O-O (12. Bh7+ Kh8 13. Bf5 Rd8 14. O-O Bxf5 15. Qxf5 b6 16. Rc1 Rd6 17. Nc3 Bxc3 18. Bxc3 Nxc3 19. Rxc3 Rad8 20. h3 Rf6 21. Qc2 Rxf3 22. gxf3 Ne5 23. Qe4 Qg5+ { Muliuolis,V (1933)-Grenard,G ICCF 2020 0-1 (84)}) (12. Be2 Bg4 13. h3 Bxf3 14. Bxf3 Nd4 15. Bxd4 cxd4 16. O-O Rad8 17. a4 Bc7 18. Ra3 Nb4 19. Qe4 Be5 20. Rb3 a5 21. Qxb7 Qe6 22. Bd1 Rd7 23. Qf3 d3 {Lemke,B (1969)-Burri,P (2085) ICCF 2017 1/2 (34)}) (12. Be4 Be6 13. O-O Rad8 14. Rc1 f5 15. Bd3 f4 16. Be2 Qe8 17. e4 Nf6 18. d3 b6 19. h3 Qg6 20. Kh2 Nh7 21. Qa4 Qe8 22. Rd1 Rc8 23. Qb5 a6 { Kural,A (2305)-Jónsson,D ICCF 2011 0-1 (26)}) 12... Bg4 13. Be2 (13. Nc3 Nxc3 14. Bxc3 Bxc3 15. dxc3 Bxf3 (15... Rad8 16. Rfd1 Ne5 17. Be2 Nxf3+ 18. Bxf3 Bxf3 19. gxf3 Qf6 20. f4 c4 21. Rd4 Rxd4 22. cxd4 Qc6 23. a4 Rc8 24. Rb1 b6 25. f5 c3 26. e4 Qd6 27. d5 {Cottle,N (1731)-Dyshkant,F ICCF 2016 0-1 (27)}) 16. gxf3 Ne5 17. Be2 Rad8 18. Rfd1 Qg5+ 19. Kf1 Qh5 20. Kg2 Qg5+ 21. Kf1 Qf6 22. Rxd8 Rxd8 23. Rd1 Rxd1+ 24. Qxd1 Qc6 {Waite,D (2096)-Fellman,M ICCF 2014 1-0 (55)}) (13. Bh7+ Kh8 14. Bf5 Bxf3 15. gxf3 Bc7 16. f4 Rfe8 17. Nc3 Nxf4 18. exf4 Nd4 19. Nd5 Nxc2 20. Nxe7 Nxa1 21. Nd5 Ba5 22. Bxa1 Rad8 23. Nc3 Bc7 24. Be4 b6 {Böhnke,H (2037)-Bachmann,W (2383) ICCF 2009 0-1 (32)}) (13. Be4 Rad8 14. h3 Bh5 15. Nc3 Nxc3 16. Bxc3 Bxc3 17. dxc3 Rfe8 18. Bxc6 bxc6 19. Qf5 Rd5 20. Qf4 Qe6 21. g4 Bg6 22. c4 Rd7 23. Rfd1 Rxd1+ 24. Rxd1 Be4 {Fagerbekk,E (2220)-Sjøl,H (2311) ICCF 2010 0-1 (68)}) 13... Nf4 (13... Rfd8 14. Nc3 (14. h3 Bh5 15. Nc3 Nxc3 16. Bxc3 Bxc3 17. Qxc3 b6 18. Rfe1 (18. Rfc1 Rac8 19. d3 Ne5 20. Qxe5 Qxe5 21. Nxe5 Bxe2 22. Rc3 Bh5 23. Rac1 f6 24. Nc4 Rc7 25. a4 Be8 26. Nb2 Rb7 27. R1c2 Rdb8 28. Kf1 Kf8 29. Ke2 Ke7 {Muri,H (2378)-Grabner,H (2266) ICCF 2011 0-1 (54)}) 18... Rac8 19. Rac1 Qd6 20. Red1 Bxf3 21. Bxf3 Ne5 22. Be2 Nd3 23. Bxd3 Qxd3 24. a4 Qd7 25. Qc4 Rc6 {Muri,H (2335)-Johnson,B (2413) ICCF 2013 1/2 (34)}) 14... Nxc3 15. Bxc3 Bxc3 16. dxc3 (16. Qxc3 b6 17. h3 Bf5 18. Rad1 Rd6 19. d4 Qf6 20. Qc4 cxd4 21. Nxd4 Nxd4 22. Rxd4 Rxd4 {Deneuville,C (2247)-Brown,H (1869) ICCF 2013 1/2}) 16... g6 17. Qb2 b6 18. c4 Rd7 19. h3 Be6 20. Rfd1 Rad8 21. Rxd7 Rxd7 22. Qc3 Qf8 23. Rd1 Rxd1+ 24. Bxd1 Qg7 25. Qc1 { Muri,H (2335)-Schwichow,P (2367) ICCF 2014 1/2 (44)}) (13... Rad8 14. h3 Bh5 15. Nc3 (15. Qf5 Bg6 16. Qg4 Bc7 17. Nh4 Ne5 18. Nxg6 Nxg6 19. Rc1 b5 20. Bf1 a6 21. Qf5 Rfe8 22. Nc3 Nb6 {Kural,A (2330)-Rosa Ramírez,V (2421) ICCF 2011 1/ 2 (41)}) 15... Bxc3 16. Bxc3 b6 17. d3 Nxc3 18. Qxc3 Rd6 19. Ra2 Rfd8 20. Rd2 Qf6 21. Qxf6 Rxf6 {1/2 (21) Muri,H (2378)-Ponelis,A (2287) ICCF 2011}) 14. Bd1 Ne6 15. Nc3 (15. h3 Bh5 16. Ne5 Bxd1 17. Rxd1 Nxe5 18. Bxe5 Rfd8 19. Qa4 Bc7 20. Bxc7 Qxc7 21. Nc3 a6 22. Qc2 b5 23. d3 Rac8 24. Rac1 Qd7 25. Qb3 Rc7 26. Ne4 Kh8 {Achermann,J (2156)-Mislin,R (2322) ICCF 2018 1/2 (38)}) 15... Rad8 ( 15... Bh5 16. Rc1 Rfd8 17. Qb1 Bg6 18. Bc2 Bxc2 19. Qxc2 Bxc3 20. Qxc3 Qd6 21. Qc4 a6 22. Qg4 b5 23. h3 c4 24. Rb1 Qd5 25. Rfe1 {Kural,A (2330)-Jensen,E (2504) ICCF 2011 1/2 (79)}) 16. Ne1 Bxd1 17. Rxd1 Rfe8 18. Nf3 {Muri,H (2335) -Weber,K (2312) ICCF 2014 1/2 (34)}) (6... Nbd7 7. Bb2 Nc5 (7... Nb6 8. cxd5 Nbxd5 9. Bc4 a6 10. O-O b5 11. Be2 Bd6 12. a4 b4 13. a5 Bb7 14. Bc4 Qe7 15. Re1 c5 16. g3 Ng4 17. e4 Ndf6 18. d3 {Kural,A (2349)-Cumming,D (2291) ICCF 2014 1/ 2 (27)}) 8. Qc2 (8. Nc3 dxc4 9. Bxc4 Nd3+ (9... Be6 10. Bxe6 Nd3+ 11. Ke2 Nxb2 12. Qb1 Bxc3 13. dxc3 Na4 14. Qb4 Ne4 15. Rhc1 Naxc3+ 16. Rxc3 Nxc3+ 17. Qxc3 fxe6 18. Rd1 Qe7 19. Ne5 {Thomsen,J (1524)-Rozumek,K (1764) ICCF 2019 0-1 (30)} ) 10. Bxd3 Qxd3 11. Qb3 c5 12. a3 Be6 13. Qd1 Bxc3 14. Bxc3 Ne4 15. Ne5 Qd5 16. Bb2 f6 17. Nf3 Rad8 18. d4 c4 {0-1 (18) Frydendal,O (1606)-Hegelund,O (2012) ICCF 2014}) 8... Qe7 (8... Nfe4 9. cxd5 Qxd5 10. Bxg7 Nxd2 11. Nfxd2 Bxd2+ 12. Nxd2 Kxg7 13. Be2 Qe5 14. O-O Bf5 15. Qc4 b6 16. Nf3 Qf6 17. Nd4 Rad8 18. Nxf5+ Qxf5 19. Rad1 Qe4 20. Qc3+ {Wantoch-Rekowski,J (2305)-Kukula,P (2063) ICCF 2006 1/2 (37)}) 9. cxd5 (9. a3 Ba5 10. cxd5 (10. Bc3 Bxc3 11. Nxc3 dxc4 12. Bxc4 Be6 13. Bxe6 Nxe6 14. O-O Rfd8 15. a4 Nd5 16. a5 Nb4 17. Qe4 c5 18. d4 { Müller,D (2366)-Dushkin,D (2285) ICCF 2016 1/2 (38)}) 10... Nxd5 11. Be2 Rd8 12. O-O Bg4 13. h3 Bh5 14. Nd4 Bxe2 15. Nxe2 c6 16. Rc1 Ne4 17. Nd4 f6 18. Nf3 Re8 19. Bd4 Bb6 {Avchinikov,V-Tassone,R (2164) ICCF 2014 1-0 (52)}) 9... Nxd5 10. Be2 Bg4 11. h3 Bd7 12. O-O Na4 13. Be5 Rac8 14. Qb3 Ndb6 15. Nc3 c5 16. Nxa4 Bxa4 17. Qb2 f6 18. Bc3 {Zhuravlev,K (2179)-Portych,V (2109) ICCF 2015 1/ 2 (52)}) (6... Bf5 7. a3 (7. Nc3 Nbd7 8. Bf4 (8. Bxf6 Nxf6 9. Qb3 Bxc3 10. Qxc3 c5 11. cxd5 Rc8 12. Bc4 Be4 13. Qb3 Nxd5 14. Qxb7 Rb8 15. Qc6 Qe7 16. Bxd5 Rb6 17. Bxf7+ Rxf7 18. Qc8+ Rf8 {Stapinski,R (1913)-Allerberger,P ICCF 2011 0-1}) 8... Bxc3 9. dxc3 c6 10. Bd3 Bxd3 11. Qxd3 Nc5 12. Qe2 Qa5 13. O-O Rfe8 14. Be5 Nfd7 15. Bd4 Ne4 16. cxd5 c5 17. Bxg7 Kxg7 18. c4 Qa6 {Yeung,C (1642)-Bjazevic, P (2245) ICCF 2008 0-1 (25)}) (7. Be2 dxc4 8. Bxc4 c5 9. O-O Nc6 10. Bb2 Qd6 11. Nc3 Rad8 12. a3 Ba5 13. Re1 a6 14. h3 {1/2 (14) Richardson,D (1721) -Eansworth,K (1985) ICCF 2014}) 7... Bd6 (7... Be7 8. Nc3 dxc4 9. Bxc4 c5 10. Ne2 (10. O-O Nc6 11. h3 Rc8 12. d3 Na5 13. Re1 Nxc4 14. dxc4 Qxd1 15. Raxd1 Ne4 16. Nd5 Bd8 17. Re2 f6 18. Bb2 Re8 19. Nf4 Bc7 20. Nh4 Be6 21. Nxe6 Rxe6 { Skerlík,S (2241)-Rallabandi,P (2186) ICCF 2017 0-1 (99)}) (10. a4 Nc6 11. O-O Rc8 12. h3 (12. Rc1 Nd7 13. Bg3 Nb6 14. Be2 c4 15. e4 Bg6 16. Ne5 Nxe5 17. Bxe5 Bb4 18. f3 f5 19. Bf4 a5 20. Be3 h6 21. Kh1 Rc6 22. exf5 Bxf5 23. Nb5 Bd3 { Mehlhorn,U (2376)-Volek,S (2361) ICCF 2018 0-1 (43)}) 12... Na5 13. Bb3 Bd3 14. Re1 Nc6 15. Bc2 Nb4 16. Bxd3 Nxd3 17. Rf1 Nd5 18. Nxd5 Qxd5 19. Bc3 {Lykke,H (2443)-Sitorus,Y (2428) ICCF 2019 1/2 (47)}) 10... Nc6 11. Bb2 a6 (11... Rb8 12. Ng3 Bg6 13. a4 Ne4 14. O-O Bf6 15. d4 a6 16. Bd3 Nxg3 17. hxg3 Bxd3 18. Qxd3 b5 19. axb5 axb5 20. Qe2 c4 21. e4 Re8 22. Rfd1 Nb4 23. Ne1 {Kural,A (2403)-Schmelz,T (2488) ICCF 2018 1/2 (35)}) 12. Ng3 Bg6 13. a4 Na5 14. Be2 Qb6 15. Be5 Nd5 16. e4 Nb4 17. O-O Qe6 18. Re1 Nac6 19. Bc3 {Kural,A (2400) -Voveris,S (2405) ICCF 2018 1/2}) (7... Ba5 8. Be2 (8. cxd5 Nxd5 9. Qb3 Nc6 10. Bb2 Nde7 11. Be2 Qd5 12. Qxd5 Nxd5 13. O-O Rad8 14. d4 Rfe8 15. Bb5 Re6 16. Rc1 Nce7 17. a4 c6 18. Bc4 Nc8 19. Nbd2 Bb4 {Skerlík,S (2240)-Kjeldsen,K (2106) ICCF 2017 1/2}) 8... dxc4 9. Bxc4 c5 10. O-O {1-0 (10) Skerlík,S (2240)-Rauf,A ICCF 2017}) 8. Bb2 (8. Bxd6 Qxd6 9. Nc3 c5 10. cxd5 Nxd5 11. Rc1 (11. Nxd5 Qxd5 12. Rc1 Nc6 13. Bc4 Qd6 14. O-O a6 15. a4 Rab8 16. Qe2 Rfd8 17. h3 h6 {1/2 (17) Kural,A (2403)-Wilhelmi,D (2421) ICCF 2018}) 11... Nxc3 12. Rxc3 Nc6 13. Bb5 Rad8 14. O-O Ne5 15. Nxe5 Qxe5 16. a4 b6 17. Qe2 Rd6 18. Rfc1 Rfd8 19. d3 a5 { Muri,H (2309)-Oesch,H (2337) ICCF 2013 1/2 (46)}) (8. Bxf6 Qxf6 9. Nc3 dxc4 10. Bxc4 c5 11. Qb3 Nd7 12. O-O b6 13. Nb5 a6 14. Nxd6 Qxd6 15. a4 Bg4 16. Bd5 Rab8 17. h3 Bh5 18. d3 Rfd8 19. Ng5 Qe7 {Muri,H (2326)-Davidov,A (2334) ICCF 2014 1/ 2 (32)}) 8... c5 (8... Nbd7 9. cxd5 (9. Nc3 dxc4 10. Bxc4 c5 (10... c6 11. d4 Qb6 12. Qb3 h6 13. O-O Qc7 14. a4 Bg4 15. Be2 Bxf3 16. Bxf3 Bxh2+ 17. Kh1 Bd6 18. e4 {Schmidt,K (2155)-Popov,V (2157) ICCF 2015 1-0 (52)}) 11. O-O Ne5 12. Nxe5 Bxe5 13. f4 Bxc3 14. Bxc3 Ne4 15. Rc1 Rc8 16. d3 Nxc3 17. Rxc3 a6 18. a4 Bd7 19. Bd5 b5 20. Qc1 b4 {Schmidt,K (2155)-Feletar,D ICCF 2015 0-1 (59)}) 9... Nxd5 10. Be2 c6 11. d4 (11. O-O Qb6 12. Bd4 c5 13. Nc3 cxd4 14. Nxd5 Qc5 15. Nb4 dxe3 16. dxe3 Rfd8 17. Rc1 Qb6 18. Nd4 {1/2 (18) Skerlík,S (2234)-Popov,V (2230) ICCF 2018}) 11... Re8 12. Nc3 N7f6 13. O-O Qb6 14. Na4 Qa5 15. Qb3 Rad8 16. Nc3 Qb6 17. Bc4 Qxb3 18. Bxb3 Nxc3 19. Bxc3 Nd5 20. Bb2 {Avchinikov, V-Schoch,T (2186) ICCF 2014 1/2 (40)}) (8... c6 9. cxd5 Nxd5 10. Bc4 Nd7 11. Nc3 Qb6 12. Ra2 Qc5 13. Be2 Rfe8 14. O-O Rad8 15. Ra1 h6 16. Qc1 N5f6 17. d4 Qa5 18. Rd1 Qc7 19. a4 a5 20. Ba3 {Kural,A (2264)-Osipov,S (2450) ICCF 2011 1/2 }) (8... dxc4 9. Bxc4 c5 10. d4 (10. d3 Nc6 11. Nbd2 a6 12. a4 Rb8 13. e4 Bg6 14. O-O b5 15. axb5 axb5 16. Ba2 Re8 17. Re1 Nd7 18. Qc2 Nb4 19. Qb3 Nb6 20. Bb1 {Schmidt,K (2171)-Popescu-Rusavat,I (2244) ICCF 2015 0-1 (39)}) 10... Nc6 11. dxc5 Bxc5 12. Nbd2 Qe7 13. O-O Rfd8 14. Qa4 Nd7 15. Qb3 Bb6 16. a4 Rac8 17. Qc3 Nf6 18. a5 Bc5 19. Ba3 Bxa3 20. Qxa3 {Kural,A (2380)-Özmen,H (2425) ICCF 2016 1/2}) 9. cxd5 Nxd5 10. Nc3 (10. Be2 Nc6 11. O-O (11. Nc3 Nf6 {1/2 (11) Skerlík,S (2234)-Höxter,H (2211) ICCF 2019} (11... Be7 12. O-O Rc8 13. d3 Nxc3 14. Bxc3 Qd6 15. Qb3 Rfd8 16. Rfd1 Qg6 17. Qxb7 Rb8 18. Qa6 Nd4 19. Qxg6 Nxe2+ 20. Kf1 Bxg6 21. Kxe2 Rb3 22. Rac1 f6 23. a4 {Fagerbekk,E (2302)-Darmanto,H (2154) ICCF 2017 1/2 (34)})) 11... Qb6 12. Ra2 Rfd8 13. Ba1 Bf8 (13... Qc7 14. d3 Nb6 15. Rd2 Bf8 16. h3 h6 17. Nc3 a6 18. Qb3 Na5 19. Qa2 Rac8 20. a4 Nc6 21. Rfd1 Be6 22. Qb2 Na5 23. Rb1 Bb3 24. Bd1 c4 25. Nd4 {Skerlík,S (2234)-González Lamigueiro,J (2249) ICCF 2019 1/2 (30)}) 14. Nc3 Qc7 15. Nxd5 Rxd5 16. Bc3 a6 17. Bc4 Rd7 18. a4 Nb4 19. Ra1 Re8 20. a5 h6 21. Qb3 Be4 {Fagerbekk,E (2193) -Hagen,T (2412) ICCF 2013 0-1 (88)}) 10... Nxc3 (10... Be7 11. Be2 Nc6 12. O-O Rc8 13. d3 Nxc3 14. Bxc3 Bf6 15. Rc1 b6 16. Qa4 Bxc3 17. Rxc3 Bd7 18. Qf4 Ne7 19. Rcc1 Ng6 20. Qc4 Re8 21. Qa6 Nf4 22. exf4 {Skerlík,S (2241)-Duchardt,A (2317) ICCF 2017 1/2 (30)}) 11. Bxc3 Nc6 (11... Be4 12. Be2 Qe7 13. O-O Nd7 14. d3 Bc6 15. d4 Nf6 {1/2 (15) Skerlík,S (2234)-Roels,F (2207) ICCF 2019}) 12. Be2 (12. Qb3 Rb8 13. Qb2 f6 14. a4 Qd7 15. Bc4+ Kh8 16. O-O Be4 17. Be2 b6 18. Rfd1 Rfd8 19. d3 Bd5 20. h4 h6 21. e4 Bg8 22. d4 cxd4 23. Nxd4 Nxd4 {Kural,A (2404) -Bücker,J (2525) ICCF 2018 1/2 (35)}) 12... Qe7 (12... a6 13. O-O Qe7 14. d4 Rad8 15. Qb3 cxd4 16. Nxd4 Be4 (16... Nxd4 17. Bxd4 Rc8 18. a4 {Fagerbekk,E (2296)-Nouveau,L (2284) ICCF 2015 1/2 (27)}) 17. Nf3 Ne5 18. Nxe5 {Kural,A (2351)-Kragten,J (2278) ICCF 2014 1/2 (28)}) (12... Rc8 13. Qb3 Qe7 14. O-O b6 15. Qb2 f6 16. Rfd1 Rfd8 17. h3 (17. a4 Rb8 18. Bb5 Be4 19. d3 Bxf3 20. gxf3 Ne5 21. f4 Nf3+ 22. Kg2 Qb7 23. e4 Nd4 24. Bxd4 cxd4 25. f5 {Fagerbekk,E (2302) -Rulfs,E (2244) ICCF 2017 1/2 (44)}) 17... Kh8 18. d4 cxd4 19. Nxd4 Nxd4 20. Rxd4 {1/2 (20) Kural,A (2375)-Heinke,R (2357) ICCF 2016}) 13. O-O Rad8 14. Qb3 Ne5 15. d4 cxd4 16. Nxd4 Be4 17. Bb4 a6 18. Rfd1 {Spartinos,P (2348)-Buczinski, H (1994) ICCF 2017 1/2 (67)}) (6... Be7 7. Nc3 (7. Bb2 Be6 8. cxd5 Qxd5 9. Be2 c5 10. O-O Nc6 11. Nc3 Qh5 12. d4 Rad8 13. Qa4 cxd4 14. Nxd4 Bg4 15. Nxc6 bxc6 16. Bxg4 Nxg4 17. h3 Ne5 18. Rad1 Nd3 {Sodomski,A (1934)-Kobus,B (1957) ICCF 2008 1-0}) (7. Be2 c6 8. O-O Bd6 9. d4 Qe7 10. Qc2 Nbd7 11. Nbd2 Nxe5 12. Nxe5 Bxe5 13. dxe5 Qxe5 14. Nf3 Qe7 15. cxd5 Nxd5 16. Rab1 Bg4 17. Rfd1 Rad8 18. Qb2 {Stapinski,R (1840)-Korepanov,P (1716) ICCF 2018 1/2 (67)}) 7... Nbd7 (7... Be6 8. Qb3 b6 9. cxd5 Bg4 10. Be2 Nbd7 11. Bg3 Bxf3 12. Bxf3 Bd6 13. d4 Re8 14. Bxd6 cxd6 15. O-O a6 16. e4 b5 17. Rfe1 Qa5 18. a3 Rac8 19. Rac1 {Stasiak,W (1610)-Ott,P ICCF 2017 0-1 (56)}) 8. Bxf6 (8. Bg3 Nc5 9. Be2 (9. Nb5 Ne6 10. Qc2 c6 11. Nbd4 Ne4 12. Nxe6 Bxe6 13. a3 Re8 14. Bd3 Bf6 15. Rc1 Bf5 16. cxd5 Qxd5 17. Bc4 Qa5 18. Qa2 Bg6 19. O-O b5 20. Be2 c5 {Frydendal,O (1788)-Laurent, C (2129) ICCF 2011 0-1}) 9... dxc4 10. Bxc4 Nd3+ 11. Ke2 Nb2 12. Qb3 Nxc4 13. Qxc4 c6 14. Rhd1 Be6 15. Qd3 Qxd3+ 16. Kxd3 b5 17. Rdc1 Ba3 18. Rc2 Bc4+ 19. Kd4 Rfe8 {Flewelling,H (1786)-Dyshkant,F ICCF 2016 0-1}) 8... Nxf6 9. Qb3 dxc4 (9... c6 10. cxd5 Nxd5 11. Nxd5 Qxd5 12. Qxd5 cxd5 13. Rb1 a6 14. a4 Rb8 15. Bd3 Bd7 16. a5 Rfc8 17. Ke2 Rc5 18. Bxa6 {González Sánchez,F (2284)-Walsh,P (1550) ICCF 2017 1-0 (47)}) 10. Bxc4 c6 11. Ne5 (11. a4 Qb6 12. a5 Qxb3 13. Bxb3 Bf5 14. Ke2 Rad8 15. d4 Bd6 16. Na4 Rfe8 17. Rhc1 Re7 18. h3 Kf8 {Lykke,H (2442)-Schuller,J (2425) ICCF 2017 1/2 (71)}) 11... Qe8 12. a4 Bd6 13. Nf3 Rb8 14. O-O Bg4 15. Nd4 Qd7 16. f4 Qe7 17. h3 Bd7 18. Nf3 {Degterev,P (2346) -Gerbich,V (2468) ICCF 2006 1/2 (40)}) (6... Nc6 7. Qc2 dxc4 8. Bxc4 Bg4 9. Bc3 Bxc3 10. Nxc3 Bxf3 11. gxf3 Ne5 12. Be2 c6 13. f4 Ng6 14. Rg1 Re8 15. Rb1 b6 16. Kf1 Rc8 17. Bd3 Rc7 {Thomsen,J (1531)-Brown,P (1565) ICCF 2019 0-1 (25)}) ( 6... Be6 7. cxd5 (7. a3 Be7 8. cxd5 Nxd5 9. Nd4 (9. Be2 Nc6 (9... c5 10. O-O Nc6 11. Bb2 a6 12. Nc3 Rc8 13. Ne4 b5 14. Qc2 Bf5 15. Rab1 c4 16. Nf6+ Bxf6 17. Qxf5 Bxb2 18. Rxb2 Nb6 19. Rc1 Qd6 20. Ng5 g6 21. Qh3 {Stapinski,R (1840) -Glembek,B (2175) ICCF 2018 0-1 (46)}) 10. Bb2 Na5 11. Nd4 Bd7 12. Nc3 Nb6 13. Qc2 Re8 14. Nf5 Bf8 15. Ng3 Nbc4 16. Bc1 c5 17. O-O b5 18. Nd5 Bc6 19. Nf4 { Stapinski,R (1731)-Wolf,M (1905) ICCF 2020 1/2 (35)}) 9... Bc8 10. Qf3 c5 11. Qg3 f6 12. Bxb8 cxd4 13. Bf4 Be6 14. Be2 Qb6 15. Bh6 Rf7 16. Bh5 g6 17. e4 Bd6 18. e5 Bxe5 {Cottarelli,F (1766)-Norlund,L (1660) ICCF 2014 0-1}) 7... Nxd5 8. Be2 Be7 9. O-O c5 10. Bb2 Nc6 11. Nc3 Rc8 12. Qb1 Qb6 13. Nxd5 Bxd5 14. Bc3 Qxb1 15. Raxb1 (15. Rfxb1 b6 16. a4 Nb4 17. a5 Rfd8 18. Rb2 {Müller,D (2375) -Johansen,A (2214) ICCF 2016 1/2 (55)}) 15... Rc7 16. a3 f6 17. Rb2 Rd8 18. Rd1 {Skerlík,S (2234)-Stukalov,M (2170) ICCF 2019 1/2}) (6... Bg4 7. cxd5 Nbd7 8. Bb2 Nxd5 9. Be2 Re8 10. O-O c6 11. Qc2 N7f6 12. h3 Bh5 13. d3 a6 14. a3 Ba5 15. Rc1 Bb6 16. Kh1 Bxe3 17. fxe3 Nxe3 18. Qd2 {Ringsborg,A (2383)-Pedersen,S (2097) ICCF 2014 1/2 (65)}) 7. a3 (7. Bb2 c5 (7... Bf5 8. Be2 c5 (8... dxc4 9. Bxc4 c5 10. Qb3 Qe7 11. O-O Nc6 12. a3 Ba5 13. Nc3 Rad8 14. Rac1 Bg4 (14... Bb6 15. Nd5 Nxd5 16. Bxd5 Rd6 17. Rfe1 Red8 18. e4 Be6 19. a4 Qf8 {Kural,A (2375) -Broniek,M (2409) ICCF 2016 1/2 (29)}) 15. Nd5 Nxd5 16. Bxd5 Bxf3 17. Bxf3 Rxd2 18. Rfd1 Red8 19. Rxd2 Rxd2 20. Ba1 {Jacewicz,G (2239)-Latas,P (2225) ICCF 2016 1/2}) 9. cxd5 Nxd5 10. O-O Nc6 11. Na3 (11. Nc3 Nxc3 12. dxc3 Ba5 13. Qb3 (13. Bc4 Be6 14. Bxe6 Rxe6 15. Qc2 Qe7 16. Rad1 Rd8 17. Ba3 Bc7 18. h3 Rxd1 19. Rxd1 Rd6 20. Rxd6 Qxd6 21. c4 b6 22. Bb2 f6 23. Bc3 Qe6 24. Qd3 a6 {Belov, P-Kirsanov,V (2212) ICCF 2010 1/2 (27)}) 13... Qe7 14. Rfd1 Rad8 15. Rxd8 (15. h3 Bc7 16. c4 f6 17. Rxd8 Rxd8 18. Rd1 Rxd1+ 19. Qxd1 Qe6 20. Kf1 Bg6 21. Bc3 Qd6 22. Qxd6 Bxd6 23. a3 Kf7 {1/2 (23) Mehlhorn,U (2376)-Salzmann,S (2320) ICCF 2018}) 15... Rxd8 16. Rd1 Rxd1+ 17. Qxd1 Bc7 18. a3 Be4 (18... h6 19. c4 b6 20. h3 Kf8 {Schmidt,K (2151)-Kutlu,H (2146) ICCF 2017 1/2} 21. Qd5 Be4 22. Qd1 Qe6 23. Nd2 Bf5 24. g4 Bg6 25. Nf1 Na5 26. Bc3 Nb7 27. Qa4 Bb8 28. Bf3 Nd6 29. Nd2 f6 30. Bd5 {Morley,P (2201)-Lo Nigro,F (2259) ICCF 2007 1/2 (42)}) 19. c4 b6 20. Bc3 h6 21. g3 Ne5 22. Nxe5 Bxe5 {Ilzig,G-Grau Ribas,J (1849) ICCF 2016 1/2 (25)}) 11... Nb6 (11... a6 12. Nc4 b5 13. a3 Ba5 14. Nxa5 Nxa5 15. Rc1 Qe7 16. h3 (16. a4 Rec8 17. Re1 Be6 18. axb5 axb5 19. h3 h6 20. d4 c4 21. e4 Nf4 22. Bf1 b4 {Mehlhorn,U (2376)-Ilyasov,A (2395) ICCF 2018 1/2 (25)}) 16... c4 17. Re1 Nb3 18. Rxc4 bxc4 19. Bxc4 Nc5 {Slyusar,V (2287)-Tritt,M (2109) ICCF 2018 1/2 (27)}) 12. Rc1 Bd3 13. Nb5 (13. Nc2 Ba5 14. Nce1 Bxe2 15. Qxe2 Qd6 16. Qd3 Rad8 17. Qxd6 Rxd6 18. Rxc5 Bxd2 19. Rb5 (19. Ba1 Bb4 20. Rb5 Rd7 21. Nc2 Bf8 22. Ncd4 Nc4 23. Rc1 Nxd4 24. Bxd4 Rc8 25. Ne5 Ba3 26. Rxc4 Rxc4 27. Nxc4 Be7 28. Kf1 Rc7 29. Nd2 b6 30. a4 Rc1+ {Avchinikov,V-Wiesinger,J (2117) ICCF 2014 1-0 (50)}) 19... Ba5 20. g3 Re4 21. Rb3 Nc4 22. Nc2 Nxb2 23. Rxb2 {Benassi,A (2293)-Connelly,K (2217) ICCF 2012 1/2 (35)}) 13... Bxe2 14. Qxe2 a6 15. Nc3 Qd7 16. a3 Bxc3 17. Bxc3 Na4 18. Ba1 b5 19. d3 {Kazmierczuk,Z (2074)-Wenzel,S ICCF 2013 0-1 (61)}) (7... c6 8. Be2 Nbd7 9. O-O (9. cxd5 Nxd5 10. O-O Nf8 11. a3 Bd6 12. Qc2 Bg4 13. Nc3 Nf6 14. h3 Bh5 15. Nh4 Bxe2 16. Nxe2 Ne6 17. Nf5 Bf8 18. Rab1 Nc5 19. a4 {Kural,A (2354)-Kayis,C (2247) ICCF 2014 1-0 (58)}) 9... dxc4 10. Bxc4 Nb6 11. Be2 Qe7 12. a3 Bd6 13. d3 Nbd5 14. Nbd2 Ng4 15. Ne4 Bc7 16. Qc1 f5 17. Nc3 Be6 18. h3 Ngf6 19. Re1 {Wantoch-Rekowski,J (2239)-Fischer,W (2435) ICCF 2006 1/2 (52)}) (7... Bg4 8. cxd5 Nxd5 9. Be2 c6 10. O-O Qe7 11. a3 Bd6 12. Qb3 Nd7 13. d4 N5f6 14. Nbd2 Be6 15. Qc2 Rac8 16. a4 Bd5 17. Bd3 h6 18. Rfe1 c5 19. Rac1 {Achermann,J (2133)-Groffen,J ICCF 2018 1/ 2 (29)}) (7... Na6 8. a3 Bf8 9. Be2 c5 10. O-O Nc7 11. d4 Ne6 12. Nc3 dxc4 13. d5 Nc7 14. Bxc4 Bd6 15. Qd3 a6 16. a4 Bg4 17. e4 Nd7 18. a5 Rb8 19. h3 { Zhuravlev,K (2139)-Niewold,J (1656) ICCF 2013 1-0 (42)}) (7... Nbd7 8. Qc2 Nb6 9. cxd5 Nbxd5 10. Bc4 Bg4 11. Bxf6 Nxf6 12. Bxf7+ Kxf7 13. Qc4+ Qd5 14. Qxb4 c5 15. Qf4 Rad8 16. O-O Bxf3 17. Qxf3 Qxf3 18. gxf3 Re6 19. a4 {Kural,A (2330) -Hunger,H (2434) ICCF 2011 1-0 (71)}) 8. Be2 (8. a3 Ba5 9. cxd5 (9. Be2 d4 10. O-O d3 11. Nc3 Nc6 {0-1 (11) Frydendal,O (1554)-Ovcinkins,A ICCF 2018}) 9... a6 10. Qc2 Nbd7 11. Nc3 b5 12. Be2 Qe7 13. O-O Bb7 14. Rfc1 Nb6 15. d3 Rac8 16. e4 c4 17. dxc4 Bxc3 18. Qxc3 Nxc4 19. Bxc4 Rxc4 {Kazmierczuk,Z (2074)-Brasier,J (2050) ICCF 2013 0-1 (71)}) 8... Nc6 9. a3 Ba5 10. cxd5 Nxd5 11. Qc2 Nd4 12. Nxd4 cxd4 13. O-O dxe3 (13... Bb6 14. Bf3 g6 15. Bxd4 Bxd4 16. exd4 Nf4 17. Nc3 Qxd4 18. Nb5 Qe5 19. Nc3 Bf5 20. Qd1 Rad8 21. Bxb7 Qb8 22. Bf3 {Frydendal,O (1848)-McGregor,S ICCF 2010 0-1 (33)}) 14. dxe3 Be6 15. Bf3 Rc8 16. Qd3 Re7 17. Qd4 f6 18. a4 Rd7 {Ringsborg,A (2280)-Hansen,K (2123) ICCF 2020 1/2}) (7. Be2 c5 (7... Nbd7 8. Bb2 dxc4 9. Bxc4 Nb6 (9... Qe7 10. O-O a6 11. Ng5 Rf8 12. a4 h6 13. Nf3 Rd8 14. Qc2 Nb6 15. Be2 a5 16. h3 Be6 17. Rd1 Ne8 18. d4 Nd6 19. Ne5 Rac8 20. e4 f6 21. Nd3 {Skerlík,S (2245)-Leisner,J (2227) ICCF 2020 1/2 (43)}) 10. Be2 Bf5 11. O-O c5 (11... Qe7 12. Qb3 Bd6 13. Nd4 Bd7 14. Nb5 c5 15. Nxd6 Qxd6 16. a4 Rad8 17. a5 Be6 18. Qc2 Nbd5 19. d4 Ng4 20. Bxg4 Bxg4 21. dxc5 Qe6 22. Nd2 Bf5 23. Qb3 {Uecker,D (2315)-Broadway,D (2157) ICCF 2015 1/2 (79)}) ( 11... c6 12. Qb3 Bf8 (12... Nbd5 13. Nc3 Bf8 14. Nxd5 Nxd5 15. Bd4 Bd6 16. Qb2 f6 17. Rfc1 Qe7 18. a4 Kh8 19. Bc4 Nb4 20. Nh4 Bd7 21. Qb1 c5 22. Bb2 Rad8 23. d4 cxd4 24. Bxd4 {Müller,D (2309)-Schneider,H (2231) ICCF 2017 1-0 (66)}) 13. d4 Be6 14. Qc2 Rc8 15. Nbd2 c5 16. dxc5 Rxc5 17. Qd3 Qxd3 18. Bxd3 Nbd7 19. Rfb1 {Müller,D (2366)-Halliwell,T (2324) ICCF 2016 1/2 (51)}) 12. Qb3 a5 13. a3 a4 14. Qd1 Ba5 15. Nc3 c4 16. Rc1 Qd7 17. Nb1 Qe7 18. d3 Rad8 19. Bd4 { Achermann,J (2143)-Alves,T (1816) ICCF 2018 1-0 (75)}) (7... Bg4 8. a3 (8. Bb2 dxc4 9. Bxc4 Qe7 10. O-O Nbd7 (10... c5 11. a3 Ba5 12. Qa4 Bxf3 13. Bxf6 Qd7 14. Qxd7 Nxd7 15. Bc3 Bxc3 16. Nxc3 Bc6 17. Rfd1 {1/2 (17) Kural,A (2397) -Leite,D (2341) ICCF 2018}) 11. Be2 Rad8 12. Qc2 c6 13. h3 Bh5 14. d4 Nd5 15. Nbd2 Bg6 16. Qb3 a5 17. a4 N7f6 18. Bd3 Bxd3 19. Qxd3 {Kural,A (2394)-Enricci, J (2369) ICCF 2019 1/2 (34)}) (8. Bc3 a5 9. cxd5 Nxd5 10. Bb2 c6 11. O-O Nd7 12. a3 Bf8 13. Nc3 Nxc3 14. Bxc3 a4 15. d4 Nf6 16. Qc2 Bd6 17. h3 Bh5 18. Bd2 Qd7 19. Rfc1 h6 {Kural,A (2394)-Mesquita Jr.,F (2403) ICCF 2019 1-0 (57)}) 8... Ba5 9. Bc3 Bxc3 10. Nxc3 dxc4 11. Rb1 b6 12. Bxc4 c5 13. Qb3 Qd7 14. Ng5 Bh5 15. O-O h6 16. Nh3 Bg6 17. Bb5 Nc6 18. d3 Qd6 19. Nf4 {Joppich,U (2479)-Jansen, J (2402) ICCF 2015 1/2 (47)}) (7... dxc4 8. Bxc4 Nc6 9. Bc3 Qe7 10. O-O Bg4 11. a3 Bd6 12. d4 Ne4 13. Bd3 Rad8 14. h3 Bh5 15. Bxe4 Qxe4 16. Nbd2 Qd3 17. Qb3 b6 18. Rfe1 a5 19. Rab1 {Kural,A (2375)-Lakatos,S (2399) ICCF 2016 1/2}) 8. Nc3 Nbd7 9. Bxf6 Nxf6 10. Nxd5 Nxd5 11. cxd5 Qxd5 (11... Bf5 12. O-O Qxd5 13. a3 Ba5 14. Qa4 Bc7 15. Rfc1 {1/2 (15) Kural,A (2375)-Brasier,J (2396) ICCF 2016}) 12. a3 Ba5 13. O-O (13. Qa4 Qd8 14. Rc1 (14. O-O Bd7 (14... Bf5 15. d4 Bb6 16. Bb5 Rf8 17. Rfd1 Qe7 18. dxc5 Bxc5 19. Qf4 g6 20. Nd4 Bxd4 21. Rxd4 Rfd8 22. a4 a6 23. Bc4 Rxd4 24. Qxd4 Rc8 25. Bd5 Be6 26. Rd1 {Giesel,M (2253)-Díaz,H (2237) ICCF 2018 1/2 (27)}) 15. Bb5 Re7 16. Bxd7 Rxd7 17. Rfd1 a6 18. Qc4 Qe7 19. Rac1 Rc8 20. a4 Bb4 21. d4 Rcd8 22. Qb3 cxd4 23. Rxd4 Bc5 24. Rxd7 Rxd7 25. g3 h6 { Fagerström,M (2328)-Koskinen,E (2313) ICCF 2019 1/2 (33)}) 14... Bb6 15. O-O Bf5 16. Qf4 Bd7 17. Bc4 Re7 18. d4 {Kural,A (2409)-Asquith,J (2399) ICCF 2020 1/2 (51)}) 13... Bd7 14. d4 Rac8 15. Rc1 cxd4 {1/2 (15) Hernáez Fernández,C (2289)-Murin,P (2310) ICCF 2017} 16. Nxd4 Rxc1 17. Qxc1 Qe5 18. Rd1 Bb6 { Cooper,R (2118)-Cheek,C (2126) ICCF 2017 1/2}) (7. Nc3 Nc6 (7... dxc4 8. Bxf6 Qxf6 9. Nd5 Qd6 10. Nxb4 Qxb4 11. Rb1 Qc5 12. Qa4 c6 13. Qxc4 Qxc4 14. Bxc4 Nd7 15. Rb2 Nc5 16. Ke2 Ne4 17. Rc1 Nd6 18. Bb3 Be6 19. Bxe6 {Jäger,E-Zageris,A ICCF 2007 (42)}) (7... Nbd7 8. Bg3 Nc5 9. Nxd5 Nxd5 10. cxd5 Qxd5 11. Be2 Nd3+ 12. Bxd3 Qxd3 13. Bxc7 Be6 14. Qe2 Qc2 15. Be5 Bc4 16. Qd1 Qd3 17. Rb1 a5 18. Bf4 Rac8 {Flewelling,H (1786)-Strebel,P (2239) ICCF 2016 0-1}) 8. Bxf6 Qxf6 9. Nxd5 Qd8 10. Be2 Bf8 11. O-O Ne5 12. Nxe5 Rxe5 13. Rb1 c6 14. d4 Re8 15. Nc3 Qa5 16. Qc2 c5 17. Rb5 Qd8 18. Rd1 a6 {Domenche Redondo,F (1884)-Luk,L (1869) ICCF 2016 1-0 (38)}) (7. Qa4) 7... Ba5 (7... Bf8 8. Nc3 Nbd7 9. Bg3 Nc5 10. d4 Nce4 11. Nxe4 Nxe4 12. Bd3 dxc4 13. Bxc4 Be6 14. Bxe6 Rxe6 15. O-O b5 16. d5 Rb6 17. Qd3 Nxg3 18. hxg3 c6 19. e4 {Stapinski,R (1774)-Díaz Castañet,J (1944) ICCF 2020 0-1 (47)}) 8. Be2 (8. Bb2 Bf5 9. Be2 c5 10. cxd5 Nxd5 11. O-O a6 12. Qc1 Nd7 13. Nc3 N5b6 14. Qd1 Rc8 15. Rc1 c4 16. d4 Qe7 17. Nd2 Nf6 18. Ncb1 Qd6 19. Ba1 Rc7 {Muri,H (2355)-Schilcher,A (2461) ICCF 2012 0-1 (43)}) 8... c5 ( 8... dxc4 9. Bxc4 Nbd7 10. Bb2 Nb6 11. Be2 Bf5 12. O-O Qe7 13. d4 Rad8 14. Bc3 Bxc3 15. Nxc3 Ne4 16. Nxe4 Bxe4 17. Bd3 f5 18. Bxe4 fxe4 19. Nd2 Qe6 20. Rc1 { Muri,H (2387)-Remis Fernández,J (2322) ICCF 2005 1/2 (47)}) 9. cxd5 (9. O-O Nc6 10. Bxf6 (10. Bc3 d4 11. Bxa5 Qxa5 12. Qc2 Bg4 13. h3 Bh5 14. g4 Bg6 15. Qb2 Qd8 16. Qxb7 Qd6 17. Qb3 Rab8 {Thomsen,J (1587)-Muljadi,P ICCF 2014 0-1}) 10... Qxf6 11. Nc3 dxc4 12. Qa4 Bg4 13. Qxc4 Bxf3 14. gxf3 Ne5 15. Qe4 b6 16. Nd5 Qd8 17. f4 Ng6 18. Qd3 Rc8 19. Nc3 Qf6 20. Ne4 Qc6 {Skerlík,S (2306)-Kappes,D (2301) ICCF 2011 0-1 (57)}) (9. Nc3 dxc4 10. Bxc4 Nc6 11. Bf4 Be6 12. Bxe6 Rxe6 13. O-O Bxc3 14. dxc3 Ne4 15. c4 Qf6 16. Qc2 Qc3 17. Qa4 Re7 18. h4 h6 19. Rac1 Qb2 20. Rb1 Qf6 {Stapinski,R (1852)-Seidl,A (2036) ICCF 2017 0-1 (32)}) 9... Nxd5 10. O-O Nc6 11. Bb2 (11. Bg3 h6 12. Qc2 Qf6 13. Ra2 b6 14. Qb2 Bf5 15. Bb5 Qe6 16. d3 Nxe3 17. fxe3 Bxd3 18. Bxd3 Qxe3+ 19. Qf2 Qxd3 20. Nh4 Qd7 21. Nf5 Nd4 22. a4 Re4 {Jiménez Ariza,J (2273)-Ugrinovsky,A (2170) ICCF 2012 1-0 (82)}) 11... Bf5 (11... Bg4) (11... Be6 12. Qc2 Rc8 13. Nc3 Nxc3 14. Bxc3 Bxc3 15. dxc3 Qe7 16. Rfd1 g6 17. Bb5 Kg7 18. h3 Bf5 19. Bd3 Bxd3 20. Rxd3 Rcd8 21. Rxd8 Rxd8 22. Rd1 Rxd1+ 23. Qxd1 {Ziemak,K-Deskin,G (2189) ICCF 2017 1/2 (43)}) 12. Qb3 (12. Nc3 Nxc3 13. Bxc3 Bxc3 14. dxc3 Qf6 (14... a6 15. Qa4 Be4 16. Rfd1 Qf6 17. Nd2 Bg6 18. Bf3 Rad8 19. Nc4 h6 20. h3 Kh7 21. Rxd8 Rxd8 22. Rc1 Rd3 23. Bxc6 bxc6 24. Nb6 Qd8 25. Nc4 Qe7 26. Qxa6 {Degterev,P (2460)-Ivanoff,G (2029) ICCF 2006 1-0 (42)}) 15. Qb3 (15. Qa4 Rad8 16. Qc4 b6 17. Qf4 Bd3 18. Qxf6 gxf6 19. Rfe1 Bxe2 20. Rxe2 Rd3 21. Rc2 Red8 22. Kf1 Rd1+ 23. Rxd1 Rxd1+ {Müller,D (2366)-Boos,M (2362) ICCF 2016 1/2 (32)}) 15... Na5 16. Qa4 b6 17. Qf4 Re4 18. Qc7 Re7 19. Qf4 g6 20. Bd3 Rd8 21. Bxf5 Qxf5 22. Qxf5 gxf5 23. Rfd1 Red7 { Muri,H (2410)-Olofsson,D (2523) ICCF 2009 1/2 (64)}) 12... Qb6 (12... a6 13. Nc3 (13. Rc1 Nf4 14. Bf1 Ne6 15. d3 Rb8 (15... Rc8 16. a4 (16. Qxb7 Bxd3 17. Nbd2 Bxd2 18. Nxd2 Na5 19. Qf3 c4 20. Bxd3 Qxd3 21. Ne4 Nb3 22. Rd1 Qc2 23. Rab1 c3 24. Bxc3 Rxc3 25. Nxc3 Qxc3 26. Qb7 Nbc5 27. Qb2 Ne4 {Muliuolis,V (1933)-Babasyan,A (2348) ICCF 2020 1/2 (28)}) 16... Bb4 (16... Ng5 17. Nbd2 Be6 18. Qd1 Nxf3+ 19. Nxf3 Bb4 20. Bc3 h6 21. Qc2 Bd5 22. Nd2 b6 23. Qb2 Bxc3 24. Rxc3 a5 25. Rb1 Rb8 26. Nc4 Nb4 27. Rd1 Rc8 28. d4 {Müller,D (2379)-Horwitz,D (2309) ICCF 2016 1/2 (55)}) 17. Nbd2 (17. Ba3 Qe7 (17... Ng5 18. Nbd2 Nxf3+ 19. Nxf3 Bg4 20. Ne1 Qe7 21. Bxb4 cxb4 22. d4 Na5 23. Qb2 Bf5 24. Rxc8 Rxc8 25. Rc1 Rxc1 26. Qxc1 g6 27. Nd3 Qd6 28. Qb2 b3 {1/2 (28) Müller,D (2375)-Sherwood,A (2187) ICCF 2016 Irregular Openings}) (17... h6 18. Nbd2 Bxa3 19. Rxa3 b6 20. Qb2 a5 21. Nc4 Nb4 22. Rd1 Be4 23. Be2 Bb7 24. Nfe5 Qc7 25. Bh5 Re7 26. Rc3 Rd8 27. Bf3 Bxf3 28. Nxf3 Rd5 29. Qb1 {Müller,D (2366)-Van Damme,L (2217) ICCF 2016 1/2 (60)}) 18. Nbd2 Red8 19. Nc4 Bxa3 20. Rxa3 Nb4 21. Nce5 h6 22. e4 Bh7 23. a5 Nc7 24. Rxc5 Qxc5 25. Nxf7 Rf8 26. Nd6+ Kh8 27. Nxc8 {1/2 (27) Ilzig,G (2103)-Palladino,M (2221) ICCF 2016}) 17... Na5 18. Qc2 c4 19. e4 Bg6 20. dxc4 Nc5 21. Ba3 Bxa3 22. Rxa3 Nc6 23. Re3 Nb4 24. Qb1 a5 25. Rce1 Nxa4 26. Nb3 b6 27. Nfd4 {Muri,H (2400)-Eitel,P (2419) ICCF 2009 1/2 (37)}) 16. a4 (16. Nbd2 b5 17. Rd1 Qd6 18. Nh4 (18. Rac1 Red8 19. Qa2 h6 20. Be2 Rbc8 21. Nf1 Qe7 22. Ng3 Bg6 23. Ne5 Nxe5 24. Bxe5 h5 25. a4 Bb4 26. h3 h4 27. Nf1 {Skerlík,S (2234) -Egger,R (2064) ICCF 2019 1/2 (30)}) 18... Bg4 19. Nhf3 Bxd2 20. Rxd2 Bxf3 21. gxf3 Ne5 22. Qd1 Rbd8 23. Bxe5 Qxe5 24. f4 Qf6 25. Rc1 Rd6 26. a4 b4 27. Bg2 Red8 {Muri,H (2335)-Rawlings,A (2352) ICCF 2016 0-1 (78)}) 16... Bc7 (16... Bb4 17. Ba3 Qe7 18. Bxb4 Nxb4 19. a5 Red8 20. Ne1 Rd7 21. Nd2 Rbd8 22. Ra3 Nc7 23. Ne4 Bxe4 24. dxe4 Nb5 25. Ra4 g5 26. h3 h5 27. g3 g4 {1/2 (27) Kural,A (2349) -Becsenescu,F (2448) ICCF 2014}) 17. Nbd2 b5 18. axb5 axb5 19. g3 (19. Rd1 Bd6 (19... h6 20. Ne4 Bxe4 21. dxe4 Qc8 22. Qc2 Bd8 23. Rab1 Be7 24. Ba1 Nb4 25. Qe2 c4 26. Ne5 Ng5 27. Qh5 c3 28. h4 Qc5 29. hxg5 Qxe5 30. Qg4 h5 31. Qxh5 { Kural,A (2404)-Forslöf,L (2468) ICCF 2018 1/2 (37)}) 20. Qc3 Rc8 21. Ne4 Bf8 22. Qb3 Nc7 23. Ng3 Bg6 24. Rd2 {Kural,A (2404)-Reichert,T (2356) ICCF 2018 1/ 2 (63)}) 19... Ba5 20. Nb1 c4 21. dxc4 Nc5 22. Qa2 b4 23. Bd4 b3 24. Qb2 Ne6 { Muri,H (2329)-Ciciotti,A (2396) ICCF 2016 0-1 (74)}) (13. d4 cxd4 14. Bxd4 b5 15. Bb2 Be6 16. Qd3 Nb6 (16... Qe7 17. Rc1 Rac8 18. Bd1 Red8 19. Qe2 Qd7 20. Nc3 Nb6 21. Ng5 h6 22. Nxe6 Qxe6 23. Qg4 f5 24. Qg3 Nc4 25. Bb3 Bc7 26. f4 g5 27. Re1 Rd3 28. Rad1 {Ilzig,G (2264)-Baroin,B (2209) ICCF 2017 1/2 (60)}) 17. Bc3 Rc8 18. Bxa5 Nxa5 19. Nbd2 Nac4 20. Nxc4 Bxc4 21. Qc2 Nd5 22. Rfc1 Bxe2 23. Qxe2 Nc3 24. Qb2 Qd3 {Ilzig,G (2128)-Werner,J (2401) ICCF 2017 1/2 (70)}) 13... Bxc3 14. Bxc3 b5 15. Rfe1 Nxc3 16. dxc3 Na5 17. Qa2 Be6 18. Qb2 (18. Qc2 Qf6 19. Nd2 Rad8 20. Rad1 Bf5 21. e4 Bd7 22. Bf1 h6 23. Nb3 Nxb3 24. Qxb3 Be6 25. Qc2 Rxd1 26. Rxd1 Rd8 27. Rd2 c4 28. Rxd8+ Qxd8 29. g3 Qd6 {Muri,H (2374)-De Carlos Arregui,I (2367) ICCF 2011 0-1 (45)}) 18... Qf6 19. e4 Rad8 20. a4 Nb3 21. e5 Qf4 22. g3 Qf5 23. Ra3 c4 24. Qb1 {Muri,H (2398)-Scherer,R (2593) ICCF 2009 0-1 (46)}) (12... Rb8 13. Qc4 (13. Nc3 Nxc3 14. dxc3 Qe7 15. c4 Red8 16. Rad1 Be6 17. Qc2 Rd7 18. Rxd7 Qxd7 19. Rd1 Qe7 20. Bd3 h6 21. Bh7+ Kh8 22. Be4 Qc7 23. Bd5 Bg4 24. Qe4 {Gosling,B-Robinson,B (1716) ICCF 2017 1-0 (25)}) 13... Qb6 14. Nc3 Nxc3 15. Bxc3 Be6 16. Qb5 Qxb5 17. Bxb5 Bxc3 18. dxc3 Bd5 19. Rfd1 Red8 20. Be2 Na5 21. Rab1 Kf8 22. Kf1 Ke7 23. Ke1 b6 24. g4 {Wantoch-Rekowski, J (2322)-Polakovic,P (2452) ICCF 2007 1/2 (48)}) (12... Qd6 13. Nc3 Bxc3 14. Bxc3 Nxc3 15. Qxc3 b6 16. Rfd1 Rac8 17. Rac1 Red8 18. Qb2 Qe7 19. d4 cxd4 20. exd4 Qd6 21. Ba6 Rc7 22. h3 h6 23. Bf1 Ne7 24. Rxc7 {Kural,A (2354)-Koseoglu,O (1969) ICCF 2014 1/2 (38)}) 13. Bc4 (13. Qxb6 axb6 14. Nh4 (14. g3 Rad8 15. Nc3 Nc7 16. Rac1 h6 17. Kg2 Re7 18. Rfd1 Red7 19. d4 cxd4 20. Nxd4 Nxd4 21. Rxd4 Rxd4 22. exd4 Rxd4 23. Bf3 Rd7 24. Ne4 Be6 25. Nd6 Bd2 {Muri,H (2335)-Brömme,S (2402) ICCF 2013 1/2 (54)}) 14... Bxb1 15. Raxb1 Bxd2 16. Rfd1 Nc3 17. Bxc3 Bxc3 18. Rxb6 Bf6 19. Nf3 Rxa3 20. Rxb7 Rd8 21. Rc1 Na5 22. Rc7 Ra2 23. Bf1 Nb3 24. Rb1 Nd2 {Groot,P (2290)-Heijnens,R (2291) ICCF 2020 1-0 (42)}) 13... Qxb3 14. Bxb3 Rad8 (14... Nde7 15. Rc1 b6 16. d4 cxd4 17. exd4 Rad8 18. Ba4 Bd7 19. Bb3 Bg4 20. d5 Bxf3 21. gxf3 Nb8 22. Rd1 Nd7 23. Nc3 Nc5 24. Bc4 Nf5 25. Rac1 Nh4 26. f4 {Muri,H (2378)-Rawlings,A (2394) ICCF 2011 1/2 (60)}) 15. Rc1 Bb6 16. Nc3 Nxc3 17. Bxc3 Bd3 18. Ba4 (18. Bc2 c4 (18... Bc7 {Kural,A (2325) -Tomecek,J (2410) ICCF 2012 1/2 (44)}) 19. Bxd3 Rxd3 20. Rab1 Red8 21. Rb5 R3d5 22. a4 f6 23. Kf1 Kf7 24. Rcb1 Ke6 25. e4 Rxb5 26. Rxb5 Rd7 27. Ke2 Kd6 28. Rh5 Re7 29. Rd5+ Kc7 {Daatselaar,J (2177)-Zylla,J (2129) ICCF 2009 1/2 (32)}) (18. Ne1 Be4 19. Bc2 Bxc2 20. Rxc2 Ba5 21. Nf3 Rd3 22. Bb2 Rd5 23. d4 Bb6 {1/2 (23) Muri,H (2395)-Trana,A (2354) ICCF 2010}) (18. h3 Bc7 19. Bc2 b6 20. Bxd3 Rxd3 21. a4 f6 22. Kf1 Kf7 23. Ke2 Rd7 {1/2 (23) Müller,D (2379)-Walka,W (2256) ICCF 2016}) 18... Be4 (18... f6 19. Bxc6 bxc6 20. Ne1 Ba6 21. f3 Kf7 22. g3 Rd7 23. a4 g5 24. Rab1 h5 25. Kf2 Bc7 26. Rb2 h4 27. gxh4 Rh8 28. Bxf6 Kxf6 29. Rxc5 Bb6 30. Rxc6+ {Muri,H (2355)-Kappes,D (2296) ICCF 2012 1/2 (38)}) 19. Ng5 (19. Bc2 Bxc2 20. Rxc2 Rd3 21. Rb2 Rd7 {1/2 (21) Muri,H (2329)-Mignon,F (2429) ICCF 2016}) 19... Bd5 20. Nh3 Bc7 21. Rab1 Rb8 (21... Re7 22. f3 Nb8 23. Kf2 a6 24. Bc2 b5 25. Ng5 f6 26. Ne4 Bb6 27. a4 b4 28. Nxf6+ gxf6 29. Bxf6 Kf7 30. Bxe7 Kxe7 31. Bxh7 a5 32. d3 Nd7 33. Bf5 {Muri,H (2355)-Bucur,M (2419) ICCF 2012 0-1 (70)}) 22. f3 Red8 23. Kf2 f6 24. d4 cxd4 25. Bxd4 Bd6 26. Bc5 Bxh2 27. f4 g5 28. Rh1 b6 29. Bb4 Nxb4 30. Rxb4 g4 31. Rxh2 gxh3 32. Rxh3 Rbc8 33. Rh1 f5 34. Rd4 Be4 35. Rhd1 Rxd4 36. Rxd4 Rc3 {1/2 (36) Muri,H (2317)-Sýkora,J (2329) ICCF 2015} *
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