[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "1 d4 Nf6 2 Nf3 e6: Torre,"] [Black "London and Colle Systems"] [Result "*"] [ECO "A46/01"] [PlyCount "87"] {[%evp 0,87,26,25,30,16,16,13,7,22,17,2,16,-4,-9,-13,-6,-9,17,10,10,3,3,12,-10, 11,-8,-7,-16,-11,-13,-24,9,-18,21,20,-8,20,33,9,9,14,14,3,25,-12,-10,-16,0,-20, -18,-3,-3,0,-2,-15,-18,-13,7,2,29,4,7,7,7,7,29,0,8,0,12,7,12,14,12,15,58,48,6, 6,6,1,58,64,69,20,20,30,6,47]} 1. d4 Nf6 (1... d6 2. Nf3 Nf6 3. g3 (3. Bf4 Bg4 (3... c5 4. e3 (4. c3 Nc6 5. dxc5 dxc5 6. Qxd8+ Nxd8 7. Nbd2 Nc6 8. e4 h6 9. Ne5 Nxe5 10. Bxe5 Bd7 11. f3 g6 12. a4 Bg7 13. Bb5 Rd8 14. Nc4 O-O 15. O-O-O { Richards,H-Malek,S ICCF 2014 1-0 (29)}) (4. dxc5 Qa5+ 5. Nc3 e5 6. Bd2 Qxc5 7. e4 Be7 8. Bd3 O-O 9. O-O Be6 10. h3 h6 11. Re1 Qc7 12. Na4 Nbd7 13. Qe2 Rac8 14. b3 d5 15. exd5 Nxd5 {Pfefferkorn,J-Blittkowsky,R (2104) ICCF 2021 1/2-1/2 (37)}) 4... cxd4 (4... h6 5. h3 Qb6 (5... g5 6. Bh2 Nc6 7. d5 Na5 8. c4 Qb6 9. b3 Bg7 10. Nbd2 Bf5 11. Be2 Ne4 12. Nxe4 Bxe4 13. O-O Bxa1 14. Qxa1 O-O-O 15. Nd2 Bg6 {Gali,A-Sousa,C (2001) ICCF 2020 (41)}) 6. Bd3 Nc6 7. dxc5 Qxb2 8. Nbd2 Qc3 9. O-O e5 10. Bh2 Qxc5 11. Nb3 Qb6 12. Nfd2 Be7 13. Rb1 Qc7 14. f4 O-O 15. f5 Nb4 16. e4 {Ryan,R (1712)-Douglass,P (1952) ICCF 2018 0-1 (28)}) (4... Qb6 5. Nbd2 Nh5 6. Nc4 Qc7 7. Bg3 Nd7 8. Be2 Nxg3 9. hxg3 g6 10. c3 Bg7 11. Ncd2 O-O 12. g4 d5 13. g5 a6 14. Kf1 b6 15. g3 Bb7 16. Kg1 {Chaviano Silveira, J-Cruz Carmona,G ICCF 2020 0-1 (42)}) 5. exd4 g6 6. c3 Bg7 7. Nbd2 O-O 8. Qc2 Bf5 9. Qb3 {1-0 (9) Pereyra,D (1895)-Juarez,G (2049) ICCF 2016}) (3... c6 4. Nbd2 (4. h3 Nbd7 5. e3 Qc7 6. c4 e5 7. Bh2 Be7 8. Nc3 h6 9. Bd3 O-O 10. O-O b6 11. Re1 Re8 12. Qc2 Bb7 13. Rad1 Bf8 14. a3 exd4 15. exd4 Rad8 {Owens,J (1300) -Lewis,J (1672) ICCF 2011 1-0 (28)}) 4... Nh5 5. Bg3 Nxg3 6. hxg3 g6 7. e4 Nd7 8. c4 Bg7 9. Nb3 Qb6 10. Qc2 O-O 11. Bd3 a5 12. O-O a4 13. Nbd2 Bxd4 14. Nxd4 Qxd4 15. Nf3 {Humbert,P (1058)-Almarza Mato,C (2169) ICCF 2020 0-1 (34)}) (3... b6 4. h3 Bb7 5. e3 Nh5 6. Bh2 Nd7 7. Be2 Nhf6 8. Nc3 a6 9. O-O e6 10. Nd2 Be7 11. e4 c5 12. e5 dxe5 13. dxe5 Nd5 14. Nce4 Bc6 15. Nc4 {Schönwetter,K (1874) -Kaytazki,L (2002) ICCF 2008 1-0 (28)}) (3... Nbd7 4. e3 (4. Nbd2 h6 5. e3 Nh5 6. Bg3 Nxg3 7. hxg3 e6 8. c4 Be7 9. Bd3 c6 10. b4 b6 11. a4 Bb7 12. Qb3 O-O 13. Be2 Qc7 14. Qc2 e5 15. Ne4 {Humbert,P (1180)-Dumont,G (1677) ICCF 2016 0-1 (42) }) 4... c6 (4... c5 5. c3 Nh5 6. Bc4 e6 7. Ng5 Nxf4 8. exf4 d5 9. Bd3 Bd6 10. O-O Bxf4 11. Nxe6 fxe6 12. Qh5+ Kf8 13. g3 Bd6 14. Nd2 Nf6 15. Qh4 Bd7 16. Nf3 {Enoksson,B (1574)-Kolkman,C (1869) ICCF 2016 0-1 (32)}) (4... g6 5. Bc4 e6 6. Nbd2 d5 7. Bd3 c5 8. b3 Bg7 9. O-O cxd4 10. exd4 O-O 11. Rc1 Nb6 12. c4 dxc4 13. bxc4 Bd7 14. c5 Nbd5 {Dunks,P (1999)-Tibbert,P (1657) ICCF 2019 1-0}) 5. Nc3 (5. c3 Nh5 6. Bg3 Qc7 7. Qc2 Nxg3 8. hxg3 g6 9. Nbd2 Bg7 10. O-O-O Nf6 11. Ne1 Ng4 12. Ndf3 Nf6 13. Nh2 Bf5 14. Qe2 Be6 15. Kb1 h5 16. e4 d5 {Pereyra,D (1895)-Gravelle,G ICCF 2016 1-0 (52)}) 5... Nh5 6. Bg5 Qb6 7. Bc4 h6 8. Na4 Qb4+ 9. Qd2 Qxc4 10. b3 Qa6 11. Bh4 g5 12. Nxg5 hxg5 13. Bxg5 Rg8 14. Bh4 b5 15. Nc3 {Sutherland,D-Moeykens,C (2049) ICCF 2009 0-1}) (3... e6 4. e3 Be7 5. Nc3 Nc6 (5... Nh5 6. Bg3 Nxg3 7. hxg3 Nc6 8. Qd3 g6 9. O-O-O Bf6 10. g4 a6 11. Ne4 Bg7 12. Qb3 O-O 13. g5 f5 14. gxf6 Bxf6 15. Bc4 d5 {Løvås,R (1680) -Nilssen,T (1574) ICCF 2017 1-0 (28)}) 6. Qe2 O-O 7. O-O-O b6 8. h4 Nh5 9. Bg3 a5 10. Ng5 Nxg3 11. fxg3 f6 12. Qh5 h6 13. Nh3 Bd7 14. Bd3 Be8 15. Qf3 { Pereyra,D (1895)-Gaitán,N (1916) ICCF 2016 0-1 (42)}) (3... Nh5 4. Bg3 Nxg3 5. hxg3 g6 6. e3 Bg7 7. c3 Nd7 8. Nbd2 e5 9. Qc2 O-O 10. O-O-O exd4 11. exd4 d5 12. Bd3 c5 13. dxc5 Nxc5 14. Rh2 Nxd3+ 15. Qxd3 {Pereyra,D (1584)-Evans,S (2045) ICCF 2017 0-1}) (3... h6 4. e3 (4. Nc3 Nbd7 (4... g5 5. Bg3 Nh5 6. e3 Nxg3 7. hxg3 Bg7 8. Bc4 c6 9. Bb3 Qa5 10. Qd2 b5 11. a3 Qb6 12. Qd3 a5 13. a4 b4 14. Ne2 d5 15. Ne5 e6 16. f4 {Deans,M (2162)-Wakeham,M (2128) ICCF 2018 1/ 2-1/2 (35)}) 5. e4 e6 6. Bd3 c5 7. d5 exd5 8. Nxd5 Nxd5 9. exd5 Be7 10. O-O O-O 11. Re1 Nf6 12. c4 Re8 13. Qb3 a5 14. a4 {Vasile,C (2056)-Secrieru,I (2082) ICCF 2011 1-0 (30)}) 4... g5 5. Bg3 e6 (5... Nh5 6. Nbd2 Nd7 7. c3 c6 8. Bd3 Ndf6 9. e4 Be6 10. e5 Nd5 11. Qc2 Ndf4 12. Bxf4 Nxf4 13. O-O g4 14. Ne1 dxe5 15. Nb3 Bg7 {Pates,C (1779)-Poletaev,V (2159) ICCF 2013 0-1}) 6. Nc3 Nc6 7. h3 Bg7 8. Bd3 Qe7 9. a3 e5 10. d5 e4 11. Bb5 exf3 12. dxc6 O-O 13. Qxf3 Rb8 14. O-O-O bxc6 15. Bxc6 {Arteaga Hernández,L (1817)-Pérez Torés,J ICCF 2013 1/ 2-1/2}) 4. e3 (4. Nbd2 Nbd7 5. h3 Bh5 6. g4 Bg6 7. Rg1 c5 8. h4 h6 9. h5 Bh7 10. c3 Rc8 11. Qb3 cxd4 12. cxd4 Rc7 13. Nh2 e5 14. dxe5 dxe5 15. Bg3 Bc2 { Pereyra,D (1601)-Arnold,E (1971) ICCF 2017 0-1}) 4... Nbd7 5. Be2 (5. h3 Bxf3 6. Qxf3 c6 7. Nd2 e5 8. Bh2 Qa5 9. c3 Be7 10. Nc4 Qc7 11. Be2 b5 12. dxe5 Nxe5 13. Nxe5 dxe5 14. Bxe5 Qxe5 15. Qxc6+ {1-0 (15) Hoffman,D (1863)-Evans,S (1717) ICCF 2015}) 5... g6 (5... c6 6. Nbd2 Qc7 7. h3 Bxf3 8. Bxf3 e5 9. dxe5 dxe5 10. Bh2 Be7 11. O-O O-O-O 12. Qe2 h5 13. Ne4 Nxe4 14. Bxe4 Bd6 15. Rfd1 {Smith,S (1896)-Bristol,M (2176) ICCF 2007 0-1}) 6. h3 Bf5 7. Nbd2 Bg7 8. O-O O-O 9. Nh4 Be4 10. Nxe4 Nxe4 11. Nf3 Ndf6 12. c3 d5 13. Ne5 Nd7 14. Nf3 c6 {Stuart, P-Thomas,G ICCF 2007 1/2-1/2 (38)}) (3. Bg5 Nbd7 (3... Bf5 4. e3 h6 5. Bh4 g5 6. Bg3 Bg7 7. Be2 O-O 8. c3 Nbd7 9. Nbd2 Nh5 10. Qb3 e5 11. dxe5 dxe5 12. Nxe5 Nxg3 13. Nxf7 Rxf7 14. hxg3 Nc5 15. Qc4 {Ong,A (1258)-Patchen,E ICCF 2021 0-1}) (3... e6 4. e4 h6 5. Bxf6 Qxf6 6. Nc3 (6. a4 Nc6 7. c3 g5 8. Bd3 h5 9. Na3 a6 10. b4 g4 11. Nd2 e5 12. b5 Ne7 13. bxa6 bxa6 14. Nc2 Bg7 15. O-O Ng6 16. Rb1 Bd7 17. Nb4 Nf4 {Babic,D (2478)-Nývlt,Z (2425) ICCF 2017 1/2-1/2 (37)}) 6... a6 (6... Qd8 7. Bc4 (7. Be2 Be7 8. Qd2 O-O 9. O-O-O Nd7 10. g4 e5 11. Rhg1 Bg5 12. Nxg5 Qxg5 13. Nb5 Qxd2+ 14. Kxd2 c6 15. Nxd6 exd4 16. g5 hxg5 17. Rxg5 g6 18. Bc4 Kg7 {Kuzaj,H (2296)-Harman,K (1635) ICCF 2017 1-0 (28)}) 7... Be7 8. O-O O-O 9. Qe2 c6 10. Rfe1 b6 11. Rad1 b5 12. Bd3 Qc7 13. a3 a5 14. d5 b4 15. Nb1 e5 16. c4 Na6 17. Nbd2 bxa3 18. bxa3 {Lam Choong Wai,E (1878)-Klimczak,J ICCF 2016 0-1 (38)}) 7. Be2 (7. Qd2 g5 8. e5 Qg7 9. O-O-O Nc6 10. Ne4 Be7 11. g4 Bd7 12. exd6 cxd6 13. Ng3 d5 14. Nh5 Qg8 15. Ne5 Nxe5 16. dxe5 O-O-O 17. Qd4 Qf8 18. Kb1 {Manarin,F (1935)-Lindegaard,P (1946) ICCF 2018 1/2-1/2}) (7. Qd3 Nd7 8. g3 Qd8 9. Bg2 Be7 10. a4 O-O 11. O-O c6 12. Nd1 b6 13. c3 a5 14. Re1 Qc7 15. Ne3 Ba6 16. Qc2 Rfe8 17. c4 Rac8 18. Rac1 Qd8 {Pastor Cutillas,A-Suárez Rodríguez,J (2233) ICCF 2018 1/2-1/2 (44)}) (7. a4 Nc6 8. Be2 g5 9. h3 Bg7 10. d5 Nb4 11. Rb1 Bd7 12. Qd2 exd5 13. Nxd5 Nxd5 14. exd5 Bxa4 15. c3 Bd7 16. O-O O-O-O 17. Ra1 Rde8 18. Rxa6 bxa6 {López-Neiger,M (1737)-Pino Munoz,F (2075) ICCF 2011 0-1}) 7... b5 8. O-O Bb7 9. e5 Qe7 (9... Qf5 10. Qd2 Nd7 11. Bd3 Qh5 12. Be4 Bxe4 13. Nxe4 d5 14. Ng3 Qg6 15. a4 b4 16. c3 bxc3 17. Qxc3 c5 18. dxc5 Nxc5 {Cooper,N (1964)-Oats,A (1981) ICCF 2015 1/2-1/2 (34)}) 10. Bd3 dxe5 11. dxe5 g5 12. Be4 Bxe4 13. Nxe4 Bg7 14. Qe2 Nc6 15. Nf6+ {Wipf,A (1859) -Schaffert III,W (1567) ICCF 2013 1-0 (29)}) (3... Ne4 4. Bh4 c5 (4... g6 5. Nbd2 Nxd2 6. Qxd2 Bg7 7. e4 O-O 8. O-O-O Bg4 9. Qf4 Be6 10. Kb1 f6 11. Qd2 Nd7 12. Qb4 b6 13. Bc4 Bxc4 14. Qxc4+ Kh8 15. Qc6 e5 16. dxe5 {Santos Etxepare,A (1498)-Brunclík,V (1667) ICCF 2008 1-0 (33)}) (4... d5 5. Nbd2 Nxd2 6. Qxd2 c6 7. e3 Nd7 8. Be2 h6 9. c4 dxc4 10. Bxc4 b5 11. Be2 Bb7 12. O-O Qc8 13. Rac1 e6 14. Bg3 Nf6 15. Bxb5 Be7 16. Bd3 {Rowley,M (1680)-West,M ICCF 2012 1-0 (39)}) 5. e3 Qa5+ 6. Nbd2 Bg4 7. Be2 Nc6 8. d5 Ne5 9. Nxe5 Nxd2 10. Qxd2 Qxd2+ 11. Kxd2 Bxe2 12. Nxf7 Kxf7 13. Kxe2 h5 14. f4 Rh6 15. Bg5 {Goellner,G-Towery,B (1595) ICCF 2019 0-1 (49)}) (3... g6 4. Bxf6 exf6 5. c4 f5 6. e3 h5 7. h4 Bh6 8. Qd2 Nd7 9. Bd3 Nf6 10. Nc3 Bd7 11. a4 a5 12. b3 O-O 13. Ng5 Ng4 14. e4 f6 15. f3 {Benc,C-Boakye,M (1853) ICCF 2015 1-0}) 4. Nbd2 (4. e3 c6 (4... h6 5. Bh4 g5 6. Bg3 Nh5 7. Nbd2 Bg7 8. Bd3 e6 9. c3 Qe7 10. Nf1 f5 11. N3d2 Ndf6 12. Be2 Qf7 13. Nc4 O-O 14. h3 Bd7 15. Bh2 Bc6 16. Rg1 {Paravic,Z (2335)-Cvetnic,V (2430) ICCF 2006 1/2-1/2 (59)}) (4... e5 5. Be2 Be7 6. dxe5 dxe5 7. O-O O-O 8. Nc3 c6 9. Bxf6 Bxf6 10. Ne4 Be7 11. c3 f5 12. Nd6 Kh8 13. Nxc8 Qxc8 14. Qc2 e4 15. Nd4 Nb6 16. a4 {Kmiecik,K (2271)-Sarakauskas,G ICCF 2005 1/2-1/2 (30)}) 5. Bd3 e5 6. Nbd2 Qa5 7. c3 Be7 8. O-O O-O 9. h3 Re8 10. Qc2 Qc7 11. Rfe1 h6 12. Bh4 d5 13. dxe5 Nxe5 14. Bg3 Bd6 15. Nxe5 Bxe5 {Jingco,J-Schoenwald,I ICCF 2021 0-1}) (4. Nc3 h6 5. Bf4 c5 6. e3 a6 7. Bc4 b5 8. Be2 Bb7 9. a4 b4 10. Nb1 g5 11. Bg3 Bg7 12. h4 g4 13. Nh2 h5 14. O-O Ne4 15. Nd2 Nxg3 {Medina,G (1514) -Núñez,A ICCF 2016 0-1 (64)}) 4... e5 (4... h6 5. Bxf6 Nxf6 6. e4 g6 7. Bd3 Bg7 8. Qe2 O-O 9. O-O c6 10. c3 Qc7 11. Nc4 b5 12. Ne3 a6 13. a4 Bd7 14. d5 bxa4 15. Rxa4 cxd5 16. Nxd5 {Angres,R (1958)-Irons,B ICCF 2018 0-1 (30)}) 5. dxe5 (5. e4 Be7 6. c3 exd4 7. cxd4 Nxe4 8. Nxe4 d5 9. Qe2 dxe4 10. Qxe4 h6 11. Bd2 Nf6 12. Qd3 Be6 13. Be2 O-O 14. O-O Re8 15. Rfe1 Bf8 16. Bd1 Rc8 { Gongora-Montes,B (2114)-Rivas Mozo,A (2260) ICCF 2019 1/2-1/2 (54)}) 5... Nxe5 6. Nxe5 dxe5 7. Nc4 Qe7 8. Qd2 Qc5 9. Bxf6 gxf6 10. O-O-O Bg4 11. Ne3 Bh6 12. h3 Be6 13. Kb1 Bxe3 14. Qxe3 Qxe3 {MacMillen,A (1551)-Aymard,M (2023) ICCF 2017 0-1 (36)}) (3. Nc3 d5 (3... Nbd7 4. Bf4 (4. e3 c6 5. Be2 Qc7 6. Bd2 e5 7. dxe5 dxe5 8. e4 Bb4 9. O-O O-O 10. Bd3 Re8 11. a3 Ba5 12. b4 Bb6 13. Na4 Nf8 14. Bc3 Bg4 15. Nxb6 axb6 {Burton,S (1632)-Ruffle,A (1490) ICCF 2021 1/2-1/2 (54)}) 4... c5 (4... g6 5. h3 Bg7 6. e3 O-O 7. Bd3 c6 8. O-O Qc7 9. Qe2 Ne8 10. Bg3 e5 11. dxe5 dxe5 12. Qd2 Qb6 13. Na4 Qd8 14. e4 Nc7 15. Rfd1 Ne6 16. Bh4 { Thys,H (1641)-Ruffle,A (1572) ICCF 2021 (26)}) (4... c6 5. Qd3 (5. e4 Qa5 6. Qd2 e5 7. Bg3 Be7 8. a3 O-O 9. h3 Re8 10. Be2 Nh5 11. b4 Qd8 12. Bh2 exd4 13. Nxd4 Bg5 14. f4 Bh4+ 15. Kf1 a5 16. Rd1 axb4 {Marci,B-Tunega,F (2139) ICCF 2009 0-1 (67)}) 5... Qa5 6. e4 e5 7. Bd2 Qb6 8. O-O-O Be7 9. h3 O-O 10. g4 Ne8 11. Kb1 a5 12. Be3 Qc7 13. a4 exd4 14. Nxd4 Nc5 15. Qd2 Qb6 16. g5 {Zelovic,V (2155)-Eilmes,D (2258) ICCF 2005 1-0 (52)}) 5. e3 h6 6. Be2 g5 7. Bg3 Qb6 8. Nd2 cxd4 9. Nc4 Qc6 10. exd4 Qxg2 11. Bf3 Qh3 12. Qe2 Qe6 13. Ne3 Bg7 14. Nb5 Kd8 15. d5 {Thompson,B (2362)-Bjørneboe,D (1826) ICCF 2016 1-0 (29)}) (3... Bf5 4. Bf4 (4. e3 g6 (4... d5 5. Bd3 e6 6. Bxf5 exf5 7. Qd3 Qc8 8. Bd2 Bd6 9. O-O O-O 10. Nb5 Nc6 11. Nxd6 cxd6 12. Rfc1 h6 13. a3 Re8 14. b4 Qd7 15. c4 dxc4 16. Rxc4 {Schönwetter,K (1890)-Curado,M (1800) ICCF 2010 0-1 (45)}) 5. Bd3 Bxd3 6. Qxd3 c6 7. O-O Bg7 8. e4 Qd7 9. e5 dxe5 10. Nxe5 Qf5 11. Qxf5 gxf5 12. Re1 Nd5 13. Nf3 e6 14. Nxd5 cxd5 15. c3 Kd7 {Hlavácek,L (1905)-Anonymous,P (1891) ICCF 2010 1/2-1/2 (41)}) (4. Nh4 Bd7 (4... Bg6 5. Nxg6 hxg6 6. e4 Nbd7 7. Qe2 e5 8. Be3 c6 9. O-O-O Qc7 10. d5 a6 11. h4 Be7 12. g4 cxd5 13. g5 d4 14. gxf6 Nxf6 15. Bxd4 exd4 16. Rxd4 {Arbis,F (2102)-Nunnally,R ICCF 2007 1/2-1/2 (34)}) 5. e4 e5 6. Nf3 exd4 7. Nxd4 Be7 8. Bc4 Nc6 9. O-O O-O 10. a3 Re8 11. Nxc6 Bxc6 12. Qf3 Qd7 13. Re1 b5 14. Ba2 Bb7 15. Qd3 a6 {Siikaluoma,A (2522) -Vandermeulen,B (2555) ICCF 2008 1/2-1/2 (46)}) 4... c6 5. e3 Qb6 6. h3 Qxb2 7. e4 Nxe4 8. Nxe4 Bxe4 9. Rb1 Qxa2 10. Rxb7 c5 11. Qb1 Qxb1+ 12. Rxb1 Bxf3 13. gxf3 cxd4 14. Bb5+ Kd8 15. Bd2 {Woodard,D (2326)-Bandl,W (2114) ICCF 2012 1/ 2-1/2 (36)}) (3... b6 4. e3 Bb7 5. Be2 g6 6. O-O Bg7 7. Bd3 O-O 8. e4 e5 9. d5 Nbd7 10. Bg5 a6 11. Nd2 Nc5 12. Be2 h6 13. Be3 Qd7 14. a4 Bc8 15. b4 { Zondervan,F-Nilssen,T (1633) ICCF 2013 1-0}) (3... e6 4. Bg5 Be7 5. e4 h6 6. Bxf6 Bxf6 7. Bc4 Nd7 8. O-O a6 9. Re1 b5 10. Bd3 e5 11. dxe5 dxe5 12. Nd5 c6 13. Nxf6+ Qxf6 14. a4 Bb7 15. axb5 {Michas,J (1579)-Laguerta,C ICCF 2016 1-0 (46)}) 4. Bf4 Bf5 (4... e6 5. e3 Bb4 (5... c6 6. Bd3 Bd6 7. Bxd6 Qxd6 8. Ne5 O-O 9. O-O Nbd7 10. f4 c5 11. b3 b6 12. Nb5 Qb8 13. Nc6 Qb7 14. Ne7+ Kh8 15. Nd6 {Puoli,H (2296)-Saccaro,R ICCF 2013 1-0}) 6. a3 Bxc3+ 7. bxc3 Ne4 8. c4 g5 9. Bg3 h5 10. h3 c5 11. Bd3 Qa5+ 12. Kf1 Nxg3+ 13. fxg3 Nc6 14. cxd5 exd5 15. dxc5 f6 16. c4 {Kovats,J-Lasley,M ICCF 2011 1-0 (28)}) 5. e3 c6 6. Bd3 e6 7. O-O Nbd7 8. h3 Be7 9. Bxf5 exf5 10. a4 O-O 11. Ne2 Re8 12. c3 Ne4 13. Qb3 g5 14. Bh2 g4 {Lamy,O (1477)-Rheindt,S (1537) ICCF 2019 1/2-1/2 (29)}) (3. e3 Nc6 (3... g6 4. Nbd2 (4. b3 Bg4 (4... Bg7 5. Be2 O-O 6. Nc3 Nbd7 7. Bb2 c6 8. Qd2 e5 9. dxe5 dxe5 10. O-O-O Ng4 11. Qe1 Qf6 12. h3 Nh6 13. Ne4 Qe7 14. g4 f5 15. gxf5 gxf5 16. Ned2 {Walters,B (1590)-Harris,S (1611) ICCF 2017 1-0 (70)}) 5. h3 Bd7 6. Bb2 Bg7 7. Nbd2 O-O 8. Be2 Bc6 9. c4 b6 10. d5 Bb7 11. O-O Nbd7 12. Qc2 Qe8 13. Bd3 Nc5 14. Be2 e6 15. dxe6 Nxe6 {Catania,D (1868)-Thomas,G ICCF 2007 1-0 (55)}) (4. Bb5+ c6 5. Be2 Bg7 6. O-O O-O 7. Bd2 Nbd7 8. Nc3 b6 9. Re1 Re8 10. Bd3 d5 11. e4 dxe4 12. Nxe4 Nxe4 13. Rxe4 Nf6 14. Rh4 Nd5 15. Bh6 Bb7 { Hardwick,M (1261)-Neil,C (1385) ICCF 2019 1-0 (31)}) 4... Bg7 5. b3 O-O 6. Bd3 c5 7. O-O cxd4 8. exd4 Nc6 9. Bb2 b6 10. h3 Bb7 11. c4 Rc8 12. Rc1 d5 13. Re1 e6 14. Bb1 dxc4 15. Nxc4 {Catania,D (1720)-Askvig,B (1795) ICCF 2013 1-0 (35)}) (3... Nbd7 4. Bd3 e5 5. Nbd2 Qe7 6. dxe5 Nxe5 7. Nxe5 Qxe5 8. Nf3 Qh5 9. O-O d5 10. c4 dxc4 11. Bxc4 Bd6 12. b3 Bg4 13. Be2 Bxf3 14. Bxf3 Qxh2# {0-1 (14) Gionfriddo,M (1858)-Nicotera,A ICCF 2011}) (3... c5 4. c3 b6 5. Bd3 Bb7 6. Nbd2 g6 7. O-O Bg7 8. Re1 O-O 9. e4 Na6 10. h3 Nc7 11. d5 b5 12. a4 a6 13. Nf1 Qd7 14. N1h2 c4 15. Bc2 {Hart,T-Scott,H (1810) ICCF 2008 1/2-1/2 (30)}) (3... e6 4. Bd3 Be7 (4... g6 5. O-O Bg7 6. c4 O-O 7. Nbd2 Nc6 8. Ne4 {1-0 (8) Rodríguez,J (1478)-Medina,G (1478) ICCF 2016}) 5. c4 O-O 6. Qc2 h6 7. Nc3 d5 8. c5 Re8 9. h3 Nc6 10. a3 a6 11. g4 g5 12. b4 b5 13. Bb2 Bf8 14. O-O-O Bd7 15. Ne5 { Arteaga Hernández,L-Arbelo Alvarado,J (1791) ICCF 2013 1-0}) 4. Nc3 (4. c3 e5 5. dxe5 Nxe5 6. Nxe5 dxe5 7. Qxd8+ Kxd8 8. Bc4 Ke8 9. b3 Bf5 10. f3 e4 11. Ba3 Bxa3 12. Nxa3 c6 13. O-O-O Ke7 14. Rd2 b5 15. Be2 Rhd8 {Carrillo Carrillo, M-Hernández Delgado,J (1900) ICCF 2015 0-1 (33)}) (4. d5 Nb8 5. c4 c6 6. Nc3 Nbd7 7. e4 g6 8. Be2 Bg7 9. a4 O-O 10. O-O cxd5 11. cxd5 Nc5 12. Qc2 Bd7 13. b4 Na6 14. Rb1 Nc7 15. Rd1 Rc8 {Liles,C (1619)-Harris,S (1593) ICCF 2016 0-1 (43)} ) 4... e6 5. b3 d5 6. Bd3 Bb4 7. Bd2 O-O 8. O-O a6 9. a3 Bd6 10. h3 Bd7 11. Qe2 e5 12. dxe5 Nxe5 13. Nxe5 Bxe5 14. f4 Bd6 {Walters,B (1586)-Harris,S (1593) ICCF 2016 1-0 (36)}) (3. h3 e6 (3... g6 4. e3 Bg7 5. Be2 O-O 6. O-O Nbd7 7. Nbd2 e5 8. e4 Re8 9. Re1 Nf8 10. Bd3 c6 11. dxe5 dxe5 12. Rb1 N6d7 13. Nc4 Nb6 14. Nxb6 Qxb6 15. Be3 {Hardwick,M (1278)-Höber,M (1622) ICCF 2020 0-1 (50)}) 4. Bf4 (4. g4 Nc6 5. a3 Bd7 6. Bg2 Be7 7. Nc3 a6 8. O-O d5 9. g5 Nh5 10. e3 Bxg5 11. Nxg5 Qxg5 12. f4 Qg6 13. Qg4 Ng3 14. Qxg6 hxg6 15. Rf3 Nf5 {Walters,B (1741)-Bordon,S ICCF 2020 0-1 (45)}) 4... Be7 5. e3 c5 6. dxc5 Qa5+ 7. Nbd2 Qxc5 8. Be2 e5 9. Bg5 e4 10. Nb3 Qf5 11. g4 Qg6 12. Bxf6 Qxf6 13. Nfd4 O-O 14. Qd2 a5 {Raluy López,M (1923)-Vajas,S (1943) ICCF 2018 0-1 (34)}) (3. Nbd2 Bf5 (3... c6 4. e3 Bg4 5. Be2 e6 6. O-O Be7 7. h3 Bf5 8. Nh4 Bg6 9. Nxg6 hxg6 10. e4 d5 11. e5 Ne4 12. Nxe4 {1-0 (12) Campani,P (1454)-Mironik,P (1564) ICCF 2018 }) (3... Bg4 4. h3 Bh5 5. g4 Bg6 6. Nh4 Be4 7. Nxe4 Nxe4 8. Bg2 d5 9. Nf3 e6 10. Nd2 Nxd2 11. Qxd2 Nd7 12. Qd3 c6 13. Bf4 Be7 14. c3 Bg5 15. Bh2 {Winter,M (1829)-McMahon,F (1968) ICCF 2014 1/2-1/2 (45)}) 4. e3 Nc6 5. Bd3 e6 6. e4 Bg6 7. c3 Be7 8. O-O O-O 9. Re1 h6 10. Nf1 a6 11. Ng3 Qd7 12. h3 Rad8 13. a4 Rfe8 14. b4 Ra8 {Jensen,K (2186)-Khrolenko,V (1984) ICCF 2015 1-0 (25)}) (3. c3 g6 4. e3 Bg7 5. Bd3 O-O 6. e4 b6 7. O-O Bb7 8. Re1 c5 9. d5 Nbd7 10. h3 Ne8 11. a4 e6 12. c4 exd5 13. exd5 Ne5 14. Nc3 Nxd3 {Oliveira,M-Nunnally,R ICCF 2007 1-0}) (3. Qd3 g6 4. e4 Bg7 5. h3 O-O 6. Nc3 c5 7. dxc5 dxc5 8. Be3 Qxd3 9. Bxd3 b6 10. e5 Nfd7 11. Be4 {1-0 (11) Banshchikov,V (2083)-Wilson,N (1515) ICCF 2015}) (3. d5 c6 4. Nc3 e6 5. dxc6 Nxc6 6. Bg5 Be7 7. e3 h6 8. Bh4 Qb6 9. Rb1 O-O 10. Nd4 d5 11. Nxc6 bxc6 12. Bd3 Ba6 13. O-O Rfd8 14. Bxa6 Qxa6 {Didara,R (1545) -Korman,J ICCF 2008 0-1 (41)}) 3... Nbd7 (3... c5 4. Bg2 cxd4 5. Nxd4 e5 6. Nb3 Be7 7. Bg5 Nc6 8. Nc3 Be6 9. Qd2 O-O 10. Rd1 Ne8 11. Bxe7 Qxe7 12. O-O f5 13. f4 e4 14. Nd4 Nxd4 15. Qxd4 {Bruce,R (1902)-Pareschi,R (1991) ICCF 2015 0-1 (53)}) (3... Bf5 4. Bg2 h6 5. O-O g5 6. Nbd2 Bg7 7. c3 Nbd7 8. Re1 Ne4 9. Qb3 Nb6 10. Nxe4 Bxe4 11. Nxg5 hxg5 12. Bxe4 d5 13. Bg2 e6 14. e4 c6 15. exd5 { Shannon,P (1934)-Thomas,G (1815) ICCF 2019 1-0 (36)}) (3... Bg4 4. Bg2 Nc6 5. d5 Nb8 6. O-O Nbd7 7. h3 Bh5 8. Nd4 Nc5 9. f4 e5 10. dxe6 fxe6 11. b4 e5 12. bxc5 exd4 13. Qxd4 c6 14. Nc3 Be7 15. Rb1 {Folk Gilsanz,J (2308)-García Sánchez,J (1807) ICCF 2011 1-0 (25)}) (3... b6 4. Bg2 Bb7 5. O-O Nbd7 6. c4 g6 7. Nc3 Bg7 8. Qc2 e6 9. e4 Qe7 10. Re1 e5 11. d5 O-O 12. b4 a5 13. Rb1 Kh8 14. a3 Ng8 15. Bd2 {Detrick,E-Cardenas,I (1367) ICCF 2016 0-1}) (3... g6 4. Bg2 e6 5. O-O Bg7 6. Re1 Bd7 7. e4 Nc6 8. Nc3 a6 9. e5 dxe5 10. Nxe5 Nxe5 11. Bxb7 Rb8 12. Bxa6 Nc6 13. d5 Ne7 14. dxe6 Bxe6 15. Qe2 {Unger,M (1809)-Winkler,E (1779) ICCF 2016 0-1 (33)}) (3... c6 4. Bg2 Bf5 5. c3 g6 6. Qb3 Qc7 7. O-O Bg7 8. Nh4 Be6 9. Qc2 Nbd7 10. e4 O-O-O 11. a4 a6 12. b4 Bc4 13. Re1 Nh5 14. Na3 Be6 15. b5 {MacMillen,A (1533)-Bishop,E (1570) ICCF 2020 1-0 (39)}) 4. Bg2 e5 (4... c6 5. O-O Qc7 6. c4 e5 7. Nc3 Be7 8. b3 h6 9. Bb2 O-O 10. Qc2 a6 11. Rfd1 Re8 { 0-1 (11) Piller,E-Shaw,D ICCF 2020}) 5. O-O (5. c4 c6 6. Nc3 g6 7. O-O Bg7 8. dxe5 Nxe5 9. Nxe5 dxe5 10. Qxd8+ Kxd8 11. Bd2 Be6 12. Rac1 Bxc4 13. Bg5 h6 14. Bxf6+ Bxf6 15. Ne4 Bxe2 16. Rfe1 Be7 {Krause,M (2043)-Nilsson,P (2111) ICCF 2009 1-0 (26)}) 5... Be7 6. dxe5 (6. e3 O-O 7. Nbd2 e4 8. Ne1 d5 9. c4 c6 10. cxd5 cxd5 11. Nb3 b6 12. Bd2 Ba6 13. Rc1 Bxf1 14. Kxf1 Qb8 15. Nc2 Rc8 16. Bc3 Qb7 17. Qd2 Qa6+ {Unger,M (1780)-Neelmeier,S (1716) ICCF 2017 0-1 (25)}) 6... dxe5 7. Bg5 c6 8. Nc3 Qc7 9. b4 Bxb4 10. Na4 O-O 11. e4 Nxe4 12. a3 Nxg5 13. Nxg5 Be7 14. Nxh7 Kxh7 15. Be4+ g6 16. h4 Nf6 17. h5 Nxe4 18. Nb2 Kg7 19. Nc4 Bf5 20. Ne3 Qc8 21. hxg6 fxg6 22. f3 Nxg3 23. Re1 Bh4 24. Nc4 Qe6 25. Na5 Nh5 26. Re3 Rad8 27. Qe1 Bxe1 28. Rexe1 Bxc2 29. Nxb7 Rd2 30. Nc5 Qh3 31. Nb7 Qg2# {0-1 (31) Anderson,L (912)-Sawyer,T ICCF 2019 1 d4 Nf6 2 Nf3 e6: Torre,-London and Colle Systems}) 2. Nf3 {[%csl Gb2,Gc3,Gd4,Ge3,Re7,Gf2,Gg7][%CAl Gd4c5, Gd4e5,Gf6g7,Gf6g5,Ge5f4,Gc1g5,Gf3e5,Gf3g5,Re5d6,Rd6e7]} e6 (2... c5 3. e3 (3. dxc5 e6 (3... Qa5+ 4. c3 (4. Qd2 Qxc5 5. Qc3 e6 6. Qxc5 Bxc5 7. a3 b6 8. Bg5 Be7 9. Nc3 Ba6 10. O-O-O Nc6 11. e4 Bxf1 12. Rhxf1 h6 13. Bh4 Rd8 14. e5 Nh7 15. Bxe7 Nxe7 {Hardwick,M (1168)-Fox,J (1567) ICCF 2018 0-1 (50)}) 4... Qxc5 5. Qc2 g6 6. e4 d6 7. Be3 Qc7 8. Nbd2 Bg7 9. Be2 O-O 10. O-O b6 11. a4 Bb7 12. a5 Nbd7 13. a6 Bc8 14. Nd4 Nc5 15. b4 {Faust,D (1829)-Fox,J (1506) ICCF 2020 1-0 (38)}) 4. b4 (4. a3 Bxc5 5. b4 (5. e3 d5 6. Bb5+ Nc6 7. O-O O-O 8. Ba4 a6 9. c3 Qc7 10. Bc2 e5 11. Ng5 e4 12. b4 Bb6 13. f3 h6 14. Nxe4 dxe4 15. fxe4 Ng4 16. g3 Bxe3+ {Hardwick,M (1343)-Meneghetti,J (1801) ICCF 2016 0-1}) 5... Be7 6. e3 O-O 7. Bb2 d5 8. Nbd2 Re8 9. Be2 Nc6 10. O-O Bd6 11. c4 Bc7 12. Qb3 Ne4 13. Rfd1 Ng5 14. Qc3 Nxf3+ 15. Nxf3 f6 {Lim,C-Norhisham,N ICCF 2015 1-0 (38)}) (4. Nc3 Bxc5 5. Bg5 (5. e3 d5 6. Bb5+ Nc6 7. O-O O-O 8. Ng5 e5 9. Bd2 h6 10. e4 hxg5 11. Bd3 dxe4 12. Nxe4 Nxe4 13. Bxe4 Be6 14. Qh5 f5 15. Bxg5 Qb6 16. Qh4 fxe4 {Meyer,M-Mislin,R (2352) ICCF 2014 0-1}) (5. h3 d5 6. e3 Nc6 7. Be2 O-O 8. O-O e5 9. a3 e4 10. Nd4 Bb6 11. Nb3 a6 12. Bd2 Qd6 13. Be1 Bc7 14. f4 exf3 15. Bxf3 Qh2+ 16. Kf2 Bxh3 {Heino,J (1607)-Seelig,J (2302) ICCF 2015 0-1}) 5... Qb6 6. e3 Qxb2 7. Na4 Bb4+ 8. c3 Bxc3+ 9. Nxc3 Qxc3+ 10. Nd2 Nc6 11. Be2 Ne4 { 0-1 (11) Clark,M (1625)-Bruce,R (1941) ICCF 2019}) (4. Be3 Na6 (4... Qc7 5. c4 Bxc5 6. Bxc5 Qxc5 7. e3 O-O 8. Be2 b6 9. O-O Rd8 10. Nc3 Bb7 11. Nb5 d6 12. b4 Qc6 13. c5 bxc5 14. bxc5 Nbd7 15. cxd6 a6 16. Rc1 {Sesko,M (2231)-Veroni,A (1927) ICCF 2010 1/2-1/2 (29)}) 5. Bd4 (5. g3 Bxc5 6. Bxc5 Nxc5 7. Qd4 b6 8. Bg2 Bb7 9. O-O O-O 10. Nc3 Rc8 11. Rfd1 Bxf3 12. exf3 d5 13. f4 Re8 14. Re1 Qc7 15. Rad1 a6 16. a4 h6 {Thompson,B (2348)-Suto,J (2388) ICCF 2007 1/2-1/2 (28)}) 5... Nxc5 6. e3 b6 7. Bxf6 Qxf6 8. Nc3 d5 9. Bb5+ Bd7 10. O-O Bd6 11. Bxd7+ Nxd7 12. e4 Ne5 13. exd5 Nxf3+ 14. Qxf3 Qxf3 15. gxf3 e5 {Lines,D (1718) -Godinez,D ICCF 2015 1/2-1/2 (30)}) (4. e3 Nc6 5. Be2 Bxc5 6. a3 d5 7. b4 Bd6 8. Nbd2 O-O 9. Bb2 e5 10. c4 e4 11. Ng5 Be5 12. Bxe5 Nxe5 13. cxd5 Bf5 14. O-O h6 15. f4 Ng6 {Magalhães,J (1729)-Fernández,J (2065) ICCF 2008 0-1 (34)}) (4. Bd2 Bxc5 5. a3 d5 6. e3 O-O 7. c4 Nc6 8. Qc2 d4 9. b4 dxe3 10. fxe3 Bd6 11. g3 a5 12. b5 Ne5 13. Nxe5 Bxe5 14. Bc3 Bc7 15. Qe2 e5 {Spiliopoulos,V (1535) -Louro,E (2020) ICCF 2017 0-1 (45)}) 4... a5 5. c3 axb4 6. cxb4 b6 7. Nbd2 (7. Be3 bxc5 8. Bxc5 Bxc5 9. bxc5 Na6 10. Qa4 Bb7 11. Qb5 Qc7 12. Nbd2 Nxc5 13. e3 O-O 14. Qb2 Rfb8 15. Be2 Bxf3 16. Nb3 Bxg2 17. Rg1 Qxh2 18. O-O-O Nxb3+ { Lansford,M (1568)-Chromczak,T ICCF 2013 0-1}) (7. e3 bxc5 8. b5 d5 9. Be2 Bd6 10. O-O O-O 11. Bb2 Nbd7 12. Nbd2 Bb7 13. Qc2 c4 14. a4 Re8 15. Rfd1 Bc7 16. Bc3 Ba5 17. h3 Qc7 18. Qb2 Rec8 {Tropf,P (2019)-Ozolins,A ICCF 2010 0-1 (69)}) 7... bxc5 8. bxc5 Bb7 9. Nb3 Nc6 10. g3 Bxc5 11. Nxc5 Qa5+ 12. Qd2 Qxc5 13. Bg2 Ne4 14. Qe3 Qxe3 {Reyes Cortés,R (1576)-Santamaría Quintana,I (1471) ICCF 2016 1-0 (41)}) (3. Bf4 cxd4 4. Nxd4 (4. Qxd4 Nc6 5. Qa4 e6 6. e3 Nd5 7. Bg3 Nb6 8. Qb3 d5 9. Nbd2 Be7 10. Be2 O-O 11. O-O Na5 12. Qb5 Nc6 13. c3 Bd7 14. Qb3 Rc8 15. Rfd1 Be8 {Grummitt,W (2053)-Farmer,M (1979) ICCF 2018 1/2-1/2 (44)} ) 4... e5 5. Bxe5 Qa5+ 6. Nc3 (6. c3 Qxe5 7. e3 a6 8. Bd3 d5 9. Nf3 Qh5 10. Nbd2 Nc6 11. Qc2 Bd6 12. b4 O-O 13. O-O {Theedom-Bridgeman,P (1226)-Gosling,B (1919) ICCF 2021}) 6... Qxe5 7. e3 Bb4 8. a3 Bxc3+ 9. bxc3 Qa5 10. Qd3 Nc6 11. Nf5 d5 12. Nxg7+ Kf8 13. Nf5 Bxf5 14. Qxf5 Qxc3+ {Pereyra,D (1601)-Pisani,C (2090) ICCF 2017 0-1}) (3. Bg5 Ne4 (3... cxd4 4. Bxf6 gxf6 5. Nxd4 d5 6. e3 Nc6 7. Nxc6 bxc6 8. c4 Rb8 9. b3 e5 10. cxd5 Bb4+ 11. Nd2 Qxd5 12. Bc4 Qxg2 13. Rf1 Bg4 14. f3 Rd8 {0-1 (14) Lines,D (1846)-Vukmirovic,N ICCF 2013}) (3... Qb6 4. Nc3 Nc6 5. d5 Nd4 6. Rb1 Nxf3+ 7. exf3 h6 8. Be3 d6 9. Bd3 Bd7 10. O-O g6 11. b4 Qc7 12. bxc5 dxc5 13. Nb5 Bxb5 14. Bxb5+ Nd7 15. Bxd7+ {Guaniezo,A-Masset,J (1907) ICCF 2013 (30)}) 4. Bf4 cxd4 (4... Qb6 5. Nc3 Nxc3 6. bxc3 g6 7. e4 Bg7 8. d5 Bxc3+ 9. Bd2 Bxa1 10. Qxa1 f6 11. Be2 d6 12. O-O O-O 13. h3 e5 14. Rb1 Qc7 15. a4 b6 16. Bb5 {Bieker,P-Wettering,G (1799) ICCF 2009 1/2-1/2 (28)}) 5. Qxd4 d5 6. Nc3 Nxc3 7. Qxc3 Nc6 8. O-O-O e6 9. e4 Bb4 10. Qxg7 Ke7 11. Bg5+ Kd7 12. Bxd8 Rxd8 13. Qxf7+ Be7 14. exd5 Rf8 {Weggen,R (1745)-Nad,R (1801) ICCF 2017 1-0}) (3. Nbd2 cxd4 4. Nxd4 e5 5. N4f3 e4 6. Ng5 d5 7. Nxf7 Kxf7 8. g3 Nc6 {0-1 (8) Cieslak,B (1738)-Chromczak,T ICCF 2013}) (3. b3 cxd4 4. Qxd4 Nc6 5. Qd1 d5 6. e3 e5 7. Bb2 Bb4+ 8. Nbd2 Ne4 9. Qc1 d4 10. a3 dxe3 11. axb4 Nxf2 12. Ne4 Nxh1 13. Qxe3 O-O 14. b5 Nb4 {DANJOUTIN,C-Gambit de MURET,C ICCF 2006 1-0 (26)}) 3... cxd4 (3... e6 4. Bd3 (4. b3 b6 5. c3 (5. c4 Bb7 6. Nc3 cxd4 7. Qxd4 Bb4 8. Bb2 d6 9. Be2 e5 10. Qd2 Ne4 11. Qc2 O-O 12. O-O Nxc3 13. Bxc3 Bxc3 14. Qxc3 f5 15. Rad1 Qe7 16. b4 Nd7 {Zdziech,M (2184)-Vodicka,M (2119) ICCF 2021 1/ 2-1/2}) 5... Bb7 6. Nbd2 Be7 7. Bb2 Nc6 8. Bd3 cxd4 9. cxd4 Rc8 10. a3 O-O 11. O-O d5 12. b4 Bd6 13. Qe2 Qe7 14. Rfc1 Nb8 15. Ne5 Ne4 {Mogstad,O (2097) -Davidson,J (2125) ICCF 2014 1-0 (63)}) (4. a3 d5 5. Bb5+ Bd7 6. Bxd7+ Nbxd7 7. Nc3 a6 8. O-O Bd6 9. Re1 O-O 10. e4 dxe4 11. Nxe4 Nxe4 12. Rxe4 Nf6 13. Re1 Qc7 14. dxc5 Bxc5 15. Be3 Rfd8 {Hardwick,M (1236)-Tymms,J (1869) ICCF 2019 0-1 (27) }) (4. c3 Ne4 (4... b6 5. Bd3 Bb7 6. O-O Be7 7. b3 O-O 8. Bb2 Ne4 9. Qc2 f5 10. Nbd2 d5 11. Ne5 Nd7 12. Ndf3 Rc8 13. c4 cxd4 14. Nxd7 Qxd7 15. Ne5 Qe8 16. exd4 {Green,P (2051)-Probola,R (2250) ICCF 2016 1/2-1/2 (71)}) 5. Bd3 Nf6 6. O-O h6 7. Nbd2 d5 8. b3 Bd7 9. a4 Be7 10. Ba3 cxd4 11. Bxe7 Qxe7 12. cxd4 Nc6 13. Bb5 a6 14. Bd3 Nb4 15. Be2 O-O {Shaffer,A-Metz,E ICCF 2015 0-1 (42)}) (4. Nc3 Nc6 5. Bb5 a6 6. Bxc6 dxc6 7. O-O Bd6 8. Ne5 Bxe5 9. dxc5 Qa5 10. Bd2 b5 11. Nd5 cxd5 12. Bc3 Bxc3 13. bxc3 Ne4 14. Qd4 Nd2 15. Qxd2 O-O {Wilding,A (1490) -Baron,M (1802) ICCF 2019 1-0 (40)}) 4... Nc6 (4... cxd4 5. Nxd4 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 b6 8. O-O Bb7 9. Bb5 O-O 10. Bd3 Qc7 11. Nc3 a6 12. Nf3 Ng4 13. Rfe1 Bxf3 14. g3 Bb7 15. Ne4 Qc6 16. Qe2 {Dingler,D (1542)-Fox,J (1618) ICCF 2015 0-1 (25)}) 5. b3 cxd4 (5... b6 6. Bb2 Bb7 7. Nbd2 cxd4 8. exd4 Nb4 9. Be2 Nbd5 10. c4 Nf4 {1-0 (10) Ong,A (1252)-Honig,P ICCF 2020}) 6. exd4 Bb4+ 7. c3 Ba5 8. Bg5 O-O 9. O-O h6 10. Bh4 Qe7 11. Qc2 g5 12. Bg3 d5 13. Nbd2 Bc7 14. Ne5 Kg7 15. h3 {Holt,F (1664)-Fox,J (1623) ICCF 2015 0-1 (47)}) (3... b6 4. Be2 Bb7 5. O-O e6 6. b3 (6. Nbd2 Be7 7. b3 O-O 8. Bb2 Qc7 9. c4 d6 10. Bd3 Nc6 11. a3 Rad8 12. Qc2 g6 13. Rfe1 cxd4 14. exd4 d5 15. Rac1 Rc8 16. b4 dxc4 17. Nxc4 Qf4 {Schönwetter,K (1911)-Beltins,G (2032) ICCF 2009 1/2-1/2 (62)}) 6... d5 7. c4 dxc4 8. Bxc4 cxd4 9. Nxd4 Nc6 10. Bb5 Rc8 11. Nxc6 Bxc6 12. Qxd8+ Kxd8 13. Bxc6 Rxc6 14. Ba3 Bxa3 15. Nxa3 {Manolis,G (1643)-Dziedzic,A (2026) ICCF 2011 0-1 (30)}) (3... Nc6 4. d5 Nb4 5. Nc3 d6 6. e4 e5 7. Nd2 Be7 8. Be2 O-O 9. O-O b6 10. Nc4 Bd7 11. a3 Na6 12. Nxd6 Nc7 13. Nc4 b5 14. Nxe5 Re8 15. d6 {Mengelkamp, B-Croker,B ICCF 2018 1-0}) (3... d6 4. b3 b6 5. Bb2 e6 6. Bd3 Bb7 7. O-O Nbd7 8. Re1 Be7 9. Nbd2 Qc7 10. c4 O-O {0-1 (10) Cockerill,M-Nixon,R (1754) ICCF 2012}) 4. exd4 (4. Nxd4 e5 5. Nb3 (5. Nb5 d5 6. Be2 Be6 7. a3 Qa5+ 8. Bd2 Qb6 9. a4 a6 10. a5 Qd8 11. N5c3 Nc6 12. O-O Bb4 13. Bc1 Bxa5 14. Re1 d4 15. exd4 exd4 16. Rxa5 Qxa5 {Hardwick,M (1261)-Fox,J (1448) ICCF 2019 0-1 (29)}) (5. Nf3 Nc6 6. Bb5 Qa5+ 7. Nfd2 Qxb5 8. Qe2 Qxe2+ 9. Kxe2 d5 10. Nc3 Bf5 11. Kd1 d4 12. Nb5 O-O-O 13. Nd6+ Bxd6 14. Nc4 Bc5 15. Bd2 dxe3 16. fxe3 Ne4 {Santamaría Quintana,I (1495)-Gomila Martí,S ICCF 2010 0-1}) 5... d5 6. Bb5+ Bd7 7. Bxd7+ Nbxd7 8. O-O Bd6 9. f4 e4 10. Nc3 Nb6 11. Nd4 Qd7 12. b3 Bb4 13. Bb2 Ng4 14. a3 Bxc3 15. Bxc3 Nxe3 {Kraut,M (1472)-Fox,J (1602) ICCF 2016 0-1 (38)}) 4... d6 ( 4... Nc6 5. Bd3 Nb4 6. Be2 d5 7. a3 Nc6 8. O-O Bf5 9. Nbd2 e6 10. Nh4 Nxd4 11. Nxf5 Nxf5 12. Nf3 Nd6 13. b4 Be7 14. Bb2 O-O 15. Rc1 a5 16. c3 {Gergelova, M-Cooper,R (1946) ICCF 2015 0-1}) 5. Bd3 (5. Bb5+ Bd7 6. Bxd7+ Nbxd7 7. O-O e6 8. a3 h6 9. Nbd2 Rc8 10. c4 Qc7 11. Qa4 a6 12. d5 e5 13. Re1 Be7 14. Qd1 O-O 15. Rb1 Ne8 16. Qc2 f5 {Hardwick,M (1214)-Ridout,P (1359) ICCF 2020 0-1 (72)}) 5... g6 6. O-O Bg7 7. c3 O-O 8. Bf4 (8. Bg5 Bd7 9. Re1 Re8 10. Nbd2 Bc6 11. Qb3 e6 12. Ne4 d5 13. Nxf6+ Bxf6 14. Bf4 Qe7 15. h3 Nd7 16. Re2 a5 17. a4 Rec8 18. Rae1 Bg7 19. Qc2 h6 {Koen,B (1786)-Thommen,J (1688) ICCF 2015 1-0 (35)}) 8... Nh5 9. Be3 Nc6 10. Re1 a6 11. Nbd2 f5 12. Nb3 e5 13. dxe5 dxe5 14. Bc4+ { Hardin,R-Blonna,M ICCF 2017 0-1 (25)}) (2... a6 3. g3 (3. Bf4 b5 (3... d5 4. e3 Bg4 5. Be2 c6 6. c3 Nbd7 7. Nbd2 c5 8. O-O Nh5 9. dxc5 Nxf4 10. exf4 Nxc5 11. Nd4 Bxe2 12. Qxe2 g6 13. Qe5 Rg8 14. Qe2 e6 15. Kh1 {Wilkes,A-Chiverton,B ICCF 2014 1-0 (27)}) 4. a4 b4 5. h3 e6 6. Nbd2 c5 7. e3 Nc6 8. Be2 Be7 9. O-O cxd4 10. exd4 Bb7 11. Bd3 Nxd4 12. Nxd4 O-O 13. Re1 Nd5 14. Bh2 Nf6 {Sedlácek,T (2214)-Laurent,C (2126) ICCF 2010 1-0 (31)}) (3. Nbd2 b5 4. Nb3 Bb7 5. e3 e6 6. Be2 Be7 7. O-O O-O 8. c4 bxc4 9. Nbd2 d5 10. b3 cxb3 11. Nxb3 a5 12. a4 Ne4 13. Bb2 Nd7 14. Nbd2 f5 {Santamaría Quintana,I (1284)-Puertas Covarrubias,F (1857) ICCF 2013 0-1 (37)}) (3. Bg5 e6 4. e4 h6 5. Bh4 g5 6. Bg3 Nxe4 7. Bd3 Nxg3 8. hxg3 Nc6 {0-1 (8) Potter,C (1674)-Dolganiuc,V (2091) ICCF 2011}) (3. e3 e6 4. Bd3 c5 5. c3 Nc6 6. O-O d5 7. Nbd2 Bd6 8. e4 cxd4 9. cxd4 Nb4 10. Bb1 dxe4 11. Nxe4 Nxe4 12. Bxe4 f5 13. Bb1 O-O 14. Re1 Nd5 {Nikolaev,A-Moore,R ICCF 2013 0-1 (32)}) (3. Nc3 Nc6 4. Bf4 d5 5. e4 e5 6. exd5 Nxd4 7. Nxd4 Bd6 8. Qe2 O-O 9. O-O-O c5 10. Bxe5 Bg4 11. f3 c4 12. fxg4 Nxd5 13. Nxd5 b5 14. Nf5 Qg5+ { Saitou,T-Oka,A ICCF 2012 1-0}) 3... b5 (3... d5 4. Bg2 c5 5. dxc5 e6 6. O-O Nc6 7. c4 Bxc5 8. cxd5 exd5 9. Bg5 O-O 10. Qc2 Ba7 11. Nc3 Be6 12. e4 dxe4 13. Nxe4 Bf5 14. Nfd2 Nd4 15. Qa4 {Rees,O-Howard,J (1995) ICCF 2020 1/2-1/2 (30)}) 4. Bg2 (4. Nbd2 Bb7 5. Bg2 e6 6. O-O Be7 7. Re1 O-O 8. e4 d6 9. Qe2 c5 10. dxc5 dxc5 11. e5 Nd5 12. a4 Nc6 13. Ne4 Qc7 14. axb5 axb5 15. Bg5 Nxe5 {Zdziech,M (2151)-Chatel,M (2175) ICCF 2020 1/2-1/2 (28)}) 4... Bb7 5. O-O (5. a4 b4 6. O-O e6 7. c4 Be7 8. Nbd2 d6 9. Re1 c5 10. e4 cxd4 11. Nxd4 Qc7 12. N2b3 Nbd7 13. Bd2 a5 14. Nb5 Qc6 15. Bf4 e5 16. N3d4 exd4 {Simplina,A (2204)-Morano,R (2222) ICCF 2021 1/2-1/2}) 5... e6 6. a4 (6. c3 d6 7. a4 Nbd7 8. Bg5 Be7 9. Na3 Bc6 10. Nd2 Bxg2 11. Kxg2 c6 12. e4 O-O 13. f4 h6 14. Bh4 c5 15. Nc2 Qc7 16. Qf3 bxa4 17. Rxa4 d5 {Vekelis,G (2345)-Anand,A (2138) ICCF 2016 1/2-1/2 (43)}) (6. Nc3 c5 7. dxc5 Bxc5 8. a3 O-O 9. Bg5 Be7 10. a4 b4 11. Nb1 h6 12. Bxf6 Bxf6 13. Nbd2 Bxb2 14. Rb1 Bc3 15. Nb3 Qc7 16. e4 Bxe4 17. Qe2 d5 {Anderson,L (761) -Hellström,A ICCF 2020 0-1 (35)}) 6... Be7 7. Bg5 b4 8. c3 O-O 9. Nbd2 c5 10. cxb4 cxb4 11. Nb3 d6 12. Bxf6 Bxf6 13. Qd3 Ra7 14. Rfc1 {Ellis,J (2250)-Cakars, J (1916) ICCF 2020 1-0 (37)}) (2... b5 3. Bg5 (3. e3 a6 4. Bd3 (4. c4 bxc4 5. Bxc4 e6 6. O-O Bb7 7. Nc3 d5 8. Be2 Nbd7 9. b4 Ne4 10. Nxe4 dxe4 11. Nd2 Bxb4 12. Rb1 a5 13. a3 Bxd2 14. Rxb7 Bxc1 15. Qxc1 O-O {Skarba,S (2366)-Trani,F (1872) ICCF 2006 1-0 (54)}) 4... Bb7 5. Nbd2 (5. O-O g6 6. b3 Bg7 7. Bb2 O-O 8. Nbd2 d6 9. Re1 Nbd7 10. c4 e5 11. d5 e4 12. Nxe4 Nxe4 13. Bxg7 Nxf2 14. Kxf2 Kxg7 15. Kg1 a5 16. cxb5 Bxd5 {Kraut,M (1405)-Dam,J (1624) ICCF 2017 0-1 (36)}) 5... d5 (5... g6 6. e4 Bg7 7. O-O O-O 8. Re1 d6 9. a4 b4 10. Nb3 a5 11. c3 bxc3 12. bxc3 Nbd7 13. Bf4 c5 14. Rb1 cxd4 15. cxd4 Bc6 16. Nbd2 Rc8 17. Bb5 { Roelofs,R (2148)-Meijer,W (2244) ICCF 2005 1/2-1/2}) (5... e6 6. Nb3 d6 7. a4 b4 8. Qe2 Be4 9. O-O Be7 10. Nfd2 Bxd3 11. cxd3 O-O 12. e4 Nbd7 13. Nc4 c5 14. Bf4 d5 15. Nca5 dxe4 16. dxe4 Qb6 17. Rac1 {Ovcharenko,L (2269)-Slivko,V (2259) ICCF 2013 0-1 (65)}) 6. O-O e6 7. Re1 Be7 8. b3 Nbd7 9. Bb2 O-O 10. Rc1 c5 11. c4 Ne4 12. Ne5 Nxe5 13. dxe5 Nxd2 14. Qxd2 dxc4 {McKinstry,J (1560)-Fermen,G (1687) ICCF 2014 0-1 (42)}) (3. Bf4 Bb7 4. e3 (4. Ne5 d6 5. Nd3 g6 6. c4 bxc4 7. Nb4 a5 8. Nc2 Nbd7 9. Nc3 Bg7 10. Na3 Nb6 11. f3 O-O 12. g4 Nxg4 13. h4 e5 14. dxe5 {Jokipii,G (1437)-Kemperman,H (1750) ICCF 2010 0-1}) 4... a6 5. c4 (5. Nbd2 e6 6. Bd3 c5 7. c3 Nc6 8. O-O Be7 9. h3 O-O 10. dxc5 Bxc5 11. Qe2 d5 12. e4 h6 13. b4 Be7 14. e5 Nd7 15. a4 bxa4 16. Rxa4 Qc7 {Jensen,K (2201)-Chomicki, H (1992) ICCF 2015 1-0}) (5. h3 e6 6. c4 c5 7. dxc5 Bxc5 8. Nc3 bxc4 9. Bxc4 O-O 10. O-O d5 11. Bd3 Nc6 12. Rc1 Qe7 13. Qb3 Rfc8 14. Rfd1 Na5 15. Qc2 h6 16. Qe2 Nc6 {Milanollo,M (2305)-Baum,H (2356) ICCF 2014 1/2-1/2}) 5... bxc4 (5... b4 6. Bd3 g6 7. Nbd2 Bg7 8. O-O O-O 9. Nb3 a5 10. a3 d6 11. axb4 axb4 12. Na5 Qc8 13. Nxb7 Rxa1 14. Qxa1 Qxb7 15. Qa4 Nbd7 16. Ra1 c5 17. Qa7 {Norman,N (2012)-Coope,D (1871) ICCF 2008 1-0 (60)}) 6. Bxc4 e6 7. O-O Be7 8. h3 d6 9. Nbd2 Nbd7 10. Qc2 c5 11. a3 cxd4 12. exd4 Rc8 13. Qb3 Qb6 14. Rac1 Qxb3 { Humbert,P (1374)-Blondel,F (1997) ICCF 2015 0-1 (26)}) (3. e4 Nxe4 4. Bxb5 Nd6 (4... e6 5. O-O Be7 (5... Bb7 6. Re1 Nf6 7. c4 Bb4 8. Nc3 O-O 9. Bg5 a5 10. Qd3 d6 11. d5 c6 12. dxe6 fxe6 13. Ba4 Na6 14. Bc2 Nc5 15. Qe3 Qc7 16. Rad1 e5 17. a3 {Rets,Y (2323)-Almarza Mato,C (2144) ICCF 2019 1-0 (25)}) 6. Nc3 Nxc3 7. bxc3 O-O 8. Rb1 d6 9. Bf4 Nd7 10. Bd3 Rb8 11. Rxb8 Nxb8 12. Qe2 Nd7 13. Rb1 c5 14. Qe4 Nf6 15. Qc6 Qa5 16. Rb8 {Glowinski,D (1741)-Korkus,M (2253) ICCF 2017 0-1 (41)}) 5. Bd3 e6 6. c4 Bb7 7. c5 Nf5 8. Bxf5 exf5 9. O-O Be7 10. Qb3 Be4 11. Nbd2 Nc6 12. Re1 Rb8 13. Qc4 Rb4 14. Qe2 Bxf3 {Avellán,G (2246)-Fonseca González,J (2132) ICCF 2010 1-0 (31)}) (3. c3 Bb7 4. Nbd2 (4. Bg5 Ne4 5. Bh4 f6 6. e3 d5 7. Bxb5+ c6 8. Bd3 Nd6 9. Nbd2 Qb6 10. Qc2 g5 11. Bg3 Bg7 12. Bxd6 exd6 13. Bxh7 Ba6 14. Bg6+ Ke7 15. O-O-O Qa5 {Echevarría González,R (1708) -Vaessen,J (1134) ICCF 2020 1-0 (28)}) 4... a6 5. g3 e6 6. Bg2 c5 7. O-O d6 8. dxc5 dxc5 9. Nb3 Qb6 10. Be3 Nbd7 11. Qc2 Be7 12. Rad1 O-O 13. Nc1 Be4 14. Qd2 Qb7 {Fariñas Lucas,J (1325)-Martínez Puigrós,R ICCF 2020 0-1}) (3. Nc3 b4 4. Nb5 a6 5. e3 axb5 6. Bxb5 Ba6 7. Bd3 Bxd3 8. cxd3 e6 9. O-O c5 10. dxc5 Bxc5 11. b3 Nc6 12. d4 Be7 13. Re1 O-O 14. Bb2 Qb6 {Peacock,J (1608)-Dabrowski,J ICCF 2018 0-1}) (3. Nbd2 Bb7 4. e4 a6 5. e5 Nd5 6. a4 bxa4 7. Bd3 e6 8. Rxa4 Bc6 9. Ra1 Nf4 10. Bf1 Be7 11. Nb3 Ng6 12. Bd3 Bd5 13. c4 Bb4+ 14. Kf1 Bb7 { Sadowski,M (2048)-Adam,M ICCF 2006 1-0 (38)}) 3... Bb7 (3... Ne4 4. Bh4 Bb7 5. Nbd2 f6 6. Nxe4 Bxe4 7. e3 c6 8. Bg3 a5 9. a4 b4 10. c4 e6 11. Bd3 Bxd3 12. Qxd3 Be7 13. h4 Na6 14. c5 d5 15. cxd6 {Alves,T (1848)-Wilshusen,H (1393) ICCF 2019 1-0 (25)}) (3... e6 4. e4 a6 5. Bd3 Be7 6. O-O d6 7. Nbd2 O-O 8. Qe2 d5 9. Ne5 Bb7 10. exd5 exd5 11. Rfe1 {1-0 (11) Allen,J (1720)-Miller,J ICCF 2013}) ( 3... h6 4. Bxf6 exf6 5. e4 b4 6. Bc4 Nc6 7. O-O a5 8. Nh4 Bd6 9. Qd3 O-O 10. f4 Kh8 11. Nd2 g6 12. g3 Bb7 13. e5 fxe5 14. fxe5 Nxe5 15. dxe5 {Krause,M (2131) -Almarza Mato,C (2083) ICCF 2010 1-0 (35)}) 4. Nbd2 (4. e3 a6 5. c4 Ne4 6. Bh4 c5 7. dxc5 g6 8. Nbd2 Nxc5 9. cxb5 Bg7 10. Rc1 Ne6 11. Qb3 axb5 12. Bxb5 Na6 13. O-O O-O 14. Qc2 Nb4 15. Qb3 Na6 {Buchmann,H (1927)-Traut,G (1998) ICCF 2015 1/2-1/2 (33)}) 4... a6 (4... c5 5. dxc5 Na6 6. e3 Nxc5 7. Bxb5 Qb6 8. Be2 Qxb2 9. O-O Bxf3 10. Bxf3 Rc8 11. Rb1 Qc3 12. Nb3 e6 13. Nxc5 Qxc5 14. Bf4 Be7 15. Bb7 Rd8 16. Qd4 {Landero Luna,V (2272)-Hernáez Fernández,C (2154) ICCF 2018 1/2-1/2 (39)}) (4... g6 5. e3 a6 6. c4 bxc4 7. Bxc4 d5 8. Bb3 Nbd7 9. O-O Bg7 10. Rc1 Rc8 11. Ba4 O-O 12. Qb3 Nb6 13. Bc6 Bxc6 14. Rxc6 Ne4 15. Nxe4 dxe4 16. Nd2 {Blittkowsky,R (2110)-Almarza Mato,C (2163) ICCF 2020 1-0 (48)}) 5. e3 (5. a4 b4 6. c4 d6 7. e3 Nbd7 8. Bd3 g6 9. O-O Bg7 10. Qc2 O-O 11. h3 c5 12. d5 h6 13. Bf4 Re8 14. Rfe1 e5 15. Bh2 a5 16. e4 Nh5 {Böhme,S-Szymanski,R ICCF 2008 1/2-1/2 (56)}) (5. c3 e6 6. e4 h6 7. Bxf6 Qxf6 8. Bd3 (8. b4 d6 9. a4 c6 10. Nb3 Qd8 11. Bd3 Nd7 12. O-O Be7 13. Na5 Qc7 14. Nxb7 Qxb7 15. d5 cxd5 16. exd5 Qxd5 17. axb5 axb5 18. Rxa8+ Qxa8 19. Bxb5 Qb7 {Pérez López,A (2409) -Freeman,M (2296) ICCF 2018 1-0 (31)}) 8... c5 9. e5 Qd8 10. Be4 Qb6 11. O-O cxd4 12. Nxd4 Be7 13. Qg4 O-O 14. Bxb7 Qxb7 15. Ne4 Nc6 16. Nxc6 Qxc6 { Haidenbauer,D (1813)-Pfaffel,T (2204) ICCF 2010 1/2-1/2}) 5... e6 (5... h6 6. Bxf6 gxf6 7. Bd3 e6 8. O-O c5 9. dxc5 Bxc5 10. a4 b4 11. Rc1 Nc6 12. Qe2 Rg8 13. Nb3 Ne5 14. e4 Bd6 15. g3 Nxf3+ 16. Qxf3 Be5 17. Qe3 {Thompson,B (2348) -Mori,A (2395) ICCF 2007 1/2-1/2 (31)}) 6. a4 b4 7. Bd3 c5 8. O-O h6 9. Bxf6 Qxf6 10. Re1 Qd8 11. c3 Be7 12. Nb3 bxc3 13. bxc3 cxd4 14. exd4 {Blondel,F (1985)-Almarza Mato,C (2121) ICCF 2019 0-1 (45)}) (2... g6 3. Bg5 (3. e3 d6 ( 3... e6 4. b3 (4. c3 Bg7 5. Bd3 d5 6. Nbd2 Nc6 7. Qc2 Qd6 8. c4 O-O 9. c5 Qe7 10. a3 Bd7 11. b4 e5 12. dxe5 Nxe5 13. Nxe5 Qxe5 14. Bb2 Qg5 15. g3 Qg4 { Zondervan,F (1410)-Schledorn,J ICCF 2020 1-0 (48)}) 4... Bg7 5. Be2 O-O 6. c4 d6 7. O-O Nbd7 8. Nc3 c6 9. Qc2 Re8 10. Bd2 Qc7 11. h3 d5 12. h4 b6 13. Ng5 h6 14. Nh3 Bb7 15. f3 {Walters,B (1586)-O'Neill,C (1517) ICCF 2016 1-0 (25)}) ( 3... c5 4. Bd3 Bg7 5. O-O cxd4 6. exd4 O-O 7. h3 (7. Re1 Nc6 8. Nc3 d6 9. Be3 Ng4 10. Qd2 Nxe3 11. fxe3 d5 12. Qf2 a6 13. a3 e5 14. dxe5 Nxe5 15. Nxe5 Bxe5 16. e4 dxe4 17. Bxe4 Bd4 {0-1 (17) Azzoug,S (1674)-Dumont,G (1777) ICCF 2008}) 7... Nc6 8. Re1 Nb4 9. Bf1 d5 10. c3 Nc6 11. Bf4 b6 12. a4 Bb7 13. Nbd2 e6 14. Nb3 Ne4 15. a5 {Debowski,S-Domaraczenko,K (1870) ICCF 2014 1-0 (73)}) (3... Bg7 4. g3 d6 5. Bg2 O-O 6. O-O Bg4 7. b3 Na6 8. Bb2 c5 9. h3 Bd7 10. Nbd2 Rc8 11. dxc5 Nxc5 12. Rb1 Qc7 13. Re1 Na6 14. c4 Nc5 15. Nf1 {Richards,M (1453) -Zigmond,A (1644) ICCF 2016 0-1 (39)}) 4. c3 (4. Bd3 c5 5. Nc3 cxd4 6. Nxd4 Bg7 7. O-O a6 8. e4 O-O 9. Bg5 Nbd7 10. Qd2 Nc5 11. Rac1 Qb6 12. Nb3 Nxd3 13. cxd3 Be6 14. Be3 Qd8 15. Nd4 Bd7 {Thys,H (1717)-Slavin,P (2065) ICCF 2010 1-0 (35)}) (4. b4 Bg7 5. Be2 O-O 6. O-O e5 7. c3 Nbd7 8. Bb2 a5 9. b5 Re8 10. Re1 Nb6 11. Na3 Bf5 12. Nc4 e4 13. Nfd2 Nfd5 14. Nxb6 Nxb6 15. c4 a4 {Schiendorfer, R-Tunega,F ICCF 2007 1-0 (35)}) (4. h3 Bg7 5. b3 c6 6. Bb2 O-O 7. Be2 Nbd7 8. Nbd2 Qc7 9. O-O a6 10. Rc1 b5 11. e4 c5 12. h4 Bb7 13. d5 Rfe8 14. Bxf6 Nxf6 15. c4 b4 {Malone,S-Harris,J ICCF 2020 0-1 (43)}) 4... Bg7 5. Be2 (5. Nbd2 O-O 6. Bd3 e5 7. dxe5 dxe5 8. Ne4 Nxe4 9. Bxe4 Qxd1+ 10. Kxd1 Nd7 11. b4 c5 12. a3 Nf6 13. Bc2 e4 14. Ng5 Nd5 15. Bb2 Nxc3+ 16. Bxc3 Bxc3 {Burattini,D-Manarin,F (1850) ICCF 2011 0-1}) 5... O-O 6. O-O Nc6 (6... Bf5 7. Nbd2 Nbd7 8. Re1 e5 9. dxe5 dxe5 10. Nb3 a5 11. a4 Qe7 12. g3 Rfd8 13. Bd2 Ne4 14. Qc1 Qf6 15. Bf1 Bg4 16. Nh4 Qxf2+ 17. Kh1 Ndc5 18. Nxc5 {Burton,S (1657)-Gallimore,C (2199) ICCF 2019 0-1}) 7. Nbd2 Re8 8. Qc2 e5 9. dxe5 dxe5 10. e4 Be6 11. Nc4 Nh5 12. Rd1 Qe7 13. Ne3 Nf4 14. Bc4 {1/2-1/2 (14) Gérard,A (1815)-Downs,D ICCF 2011}) (3. Nc3 d6 4. d5 Bg7 5. e3 c6 6. Bd3 cxd5 7. Bd2 e5 8. Bb5+ Bd7 9. a4 Nc6 10. h3 a6 11. Bxc6 bxc6 12. a5 O-O 13. g4 Ne4 14. Nxe4 dxe4 {Magill,R (1581)-Roy Laguens, A ICCF 2011 0-1}) 3... Bg7 4. Nbd2 c5 5. e3 cxd4 6. exd4 O-O 7. Bd3 Nc6 8. c3 d6 9. O-O h6 10. Bh4 (10. Bxf6 Bxf6 11. Re1 Bg7 (11... e5 12. dxe5 Nxe5 13. Nc4 Be6 14. Ncxe5 dxe5 15. Nxe5 Qb6 16. Qc2 Rad8 17. Nc4 Qa6 18. b3 b5 19. Nd2 Qd6 20. Ne4 Qxd3 21. Qxd3 Rxd3 22. Nxf6+ Kg7 23. Ne4 {Schiendorfer,R (2348) -Johansson,B (2305) ICCF 2009 1/2-1/2 (33)}) 12. Nc4 Qc7 13. h4 e5 14. dxe5 dxe5 15. Qe2 Rd8 16. Bc2 Bf5 17. h5 Bxc2 18. Qxc2 gxh5 19. Qe4 Rab8 20. Nh4 b5 21. Ne3 Ne7 {Polák,V-Kubaský,A (2257) ICCF 2008 1/2-1/2 (42)}) 10... e5 ( 10... Nh5 11. Re1 f5 12. d5 Ne5 13. Bc2 Qc7 14. h3 Kh7 15. Nb3 Rf7 16. Nbd4 Bd7 17. Nxe5 dxe5 18. Ne6 Bxe6 19. dxe6 Rd8 20. exf7 Rxd1 21. Bxd1 a6 22. g3 { Deneuville,C (2203)-Gunkel,W (2300) ICCF 2010 0-1 (51)}) 11. dxe5 dxe5 12. Qc2 Qc7 13. Nc4 Be6 14. Ne3 {Bendaña-Aragón,J (2309)-Vetter,G (2288) ICCF 2015 0-1 (49)}) (2... b6 3. Bg5 (3. e3 e6 4. Bd3 c5 5. Nc3 (5. O-O Nc6 6. Nc3 h6 7. dxc5 Bxc5 8. Ne4 Nb4 9. Nxc5 bxc5 10. Bc4 Bb7 11. Qd6 Ne4 12. Qe5 Nxc2 13. Rb1 Ng5 14. Nxg5 Qxg5 15. Qxg5 hxg5 16. b4 Nxb4 {Smith,J-Fritsch,J ICCF 2015 1-0 (41)}) 5... Nc6 6. dxc5 Bxc5 7. O-O O-O 8. a3 d5 9. e4 d4 10. Ne2 Bd6 11. e5 Nxe5 12. Nfxd4 Bb7 13. f3 Nxd3 14. Qxd3 Qc7 {Jezek,O-Stastný,P (2239) ICCF 2009 0-1 (70)}) 3... Bb7 4. Nbd2 e6 5. e4 Be7 6. Bd3 h6 (6... d5 7. e5 Ne4 8. Bxe7 Qxe7 9. Bb5+ Nc6 10. c3 O-O-O 11. Bxc6 Bxc6 12. Nxe4 dxe4 13. Ng1 Qg5 14. g3 e3 15. f3 f6 16. Qe2 fxe5 17. Rd1 exd4 18. cxd4 {Scavo,S (1605)-Esposito,L (1666) ICCF 2014 0-1 (26)}) 7. Bxf6 Bxf6 8. O-O O-O 9. c3 d6 10. Qe2 c6 11. Rad1 Nd7 12. Rfe1 e5 13. dxe5 Nxe5 14. Bc2 {Giacchetti,C (2330)-Giovannini,E ICCF 2013 1-0 (25)}) (2... Nc6 3. Nc3 (3. d5 Nb8 4. Nc3 g6 (4... c6 5. e4 d6 6. Bc4 b5 7. Bd3 b4 8. Ne2 cxd5 9. exd5 Bb7 10. c4 bxc3 11. Bb5+ Nbd7 12. Nxc3 g6 13. Nd4 Nxd5 14. Nxd5 Bxd5 15. O-O e6 16. Bf4 {Siikaluoma,A-Rauduve,M ICCF 2005 1-0 (54)}) 5. e4 d6 6. Bg5 Bg7 7. Qd2 O-O 8. h4 h5 9. Bh6 c6 10. Bxg7 Kxg7 11. O-O-O Nbd7 12. Be2 cxd5 13. exd5 Nc5 14. Kb1 Nce4 {Carradori,D-Ballarani,P (2371) ICCF 2012 1-0 (97)}) (3. g3 g6 4. Bg2 Bg7 5. Nbd2 d6 6. e4 Bg4 7. c3 O-O 8. O-O Qc8 9. Re1 Bh3 10. Bxh3 Qxh3 11. Ng5 Qg4 12. Qxg4 Nxg4 13. Nc4 h6 14. h3 Nf6 {Sanchez,D-Harrington,T (1522) ICCF 2012 1/2-1/2}) 3... d6 (3... e6 4. e4 Bb4 5. Bd2 Bxc3 6. Bxc3 d5 7. e5 Ne4 8. Bd3 Nxc3 9. Qd2 Ne4 10. Qe3 Bd7 11. c4 f5 12. O-O Nb4 13. b3 O-O 14. a3 f4 15. Qc1 {Miedema,H-Lafferty,B ICCF 2015 0-1 }) 4. d5 Nb4 5. a3 Na6 6. Nd4 {1-0 (6) Rivera,J (1442)-McKigney,T ICCF 2018}) ( 2... h6 3. e3 (3. g3 d6 4. b3 (4. Bg2 c6 5. O-O Bg4 6. c4 Qd7 7. Nbd2 Bh3 8. Bxh3 Qxh3 9. Qb3 Qc8 10. e4 g5 11. e5 dxe5 12. dxe5 Nfd7 13. e6 fxe6 14. Qe3 Nf6 15. Re1 Ng4 {Jernberg,K (1826)-Birkeland,O (1759) ICCF 2018 1-0}) 4... Nc6 5. Bg2 Bd7 6. O-O e5 7. Nc3 exd4 8. Nb5 a6 9. Nfxd4 axb5 10. Nxc6 bxc6 11. e4 Be7 12. Bb2 O-O 13. c4 b4 14. e5 Nh7 {Anderson,L (812)-Budeanu,P ICCF 2020 1-0} ) (3. Bf4 g5 4. Bg3 Bg7 5. e3 e6 6. Nc3 a6 7. Bd3 g4 8. Nd2 h5 9. Bh4 Nc6 10. h3 gxh3 11. gxh3 d5 12. Qf3 Bd7 13. Rg1 Rg8 14. Bxf6 Qc8 {Mospanov, A-Prabaswara,I ICCF 2016 1-0}) (3. c4 d6 4. Nc3 Bg4 5. e4 c6 6. Be2 Nbd7 7. h3 Bxf3 8. Bxf3 e5 {0-1 (8) Viaggi,S-Ellis,M ICCF 2012}) (3. h3 e6 4. Bf4 Ne4 5. e3 f6 6. Nh4 Bd6 7. Qh5+ Ke7 8. Ng6+ Kf7 9. Nxh8+ Kg8 10. Nf7 Qe8 11. Nxh6+ Kf8 12. Qxe8+ Kxe8 13. Bxd6 Nxd6 14. Ng4 Ne4 {Owens,J (1559)-Ramos,F ICCF 2014 1-0 (29)}) 3... a6 (3... d5 4. Bd3 e6 5. O-O Bd6 6. b3 Bd7 7. Bb2 Nc6 8. Nbd2 Nh5 9. Ne5 Nxe5 10. dxe5 Be7 11. Qxh5 Bc6 12. f4 Qd7 13. Rf3 O-O-O 14. Qxf7 Bh4 15. Qxd7+ {Kraut,M (1322)-Nichol,J (1310) ICCF 2020 0-1 (35)}) (3... g6 4. Bd3 d6 5. Nbd2 Bg7 6. O-O b6 7. e4 Bb7 8. Re1 O-O 9. e5 Nh5 10. Nb3 d5 11. c4 Qc8 12. cxd5 e6 13. dxe6 fxe6 14. Bxg6 Nf4 15. Bxf4 {Hardwick,M (1304)-Stiles,T ICCF 2020 1/2-1/2 (78)}) 4. Bc4 b5 5. Bb3 d5 6. O-O e6 7. h3 Bd6 8. a3 Nc6 9. Bd2 Ne4 10. Be1 O-O 11. Ne5 Ne7 12. f3 Nf6 13. Bb4 a5 14. Bxd6 {Benson, K-Martindale,R (1438) ICCF 2015 0-1 (35)}) (2... Ne4 3. c3 (3. e3 e6 4. Bd3 Bb4+ 5. c3 d5 6. cxb4 Nf6 7. O-O Nc6 8. b5 Ne7 9. Nc3 b6 10. a4 Ng4 11. h3 Nh6 12. b4 O-O 13. a5 f6 14. e4 Qd6 {Kocher,R (1495)-Heineccius,A (1459) ICCF 2017 1-0}) (3. Ng5 Nxg5 4. Bxg5 Nc6 5. e3 Nb4 6. Qg4 Nxc2+ {0-1 (6) Lyons,A-Fritsch, J ICCF 2015}) 3... d5 4. Bf4 f6 5. e3 Nd7 6. Nbd2 Nxd2 7. Qxd2 g5 8. Bg3 h5 9. Bd3 Nb6 10. Bg6+ Kd7 11. h3 e6 12. Bd3 Bd6 13. Bxd6 cxd6 14. O-O-O { Echevarría González,R (1623)-Feldt,K (1530) ICCF 2021}) (2... h5 3. h4 Na6 4. g3 b5 5. e3 c6 6. Bg2 Ne4 7. Ne5 f5 8. Bxe4 fxe4 9. O-O d5 10. Nc3 Qd6 11. Bd2 c5 12. Nxb5 Qb6 13. Ng6 Rg8 14. a4 {Anderson,L (1343)-Jokipii,G (1279) ICCF 2014 0-1}) 3. Bg5 (3. Bf4 c5 (3... Be7 4. e3 (4. Nbd2 O-O (4... Nh5 5. Bg3 O-O 6. Ne5 d6 7. Nd3 b6 8. e3 Nxg3 9. hxg3 Bb7 10. Qh5 h6 11. f4 Qe8 12. g4 c5 13. g5 Nc6 14. dxc5 bxc5 15. Qh3 f5 16. Be2 {Zelovic,V (2155)-Guzy,G (2032) ICCF 2005 1-0 (30)}) 5. e4 d5 (5... d6 6. Bd3 Nbd7 7. h3 b6 8. O-O Bb7 9. Re1 Nh5 10. Bh2 Nhf6 11. c4 c5 12. d5 e5 13. Kh1 Nh5 14. Nxe5 Nxe5 15. Bxe5 dxe5 16. Qxh5 Qd6 17. Re3 {Humbert,P (1343)-Rivollier,F (2000) ICCF 2015 1-0 (56)}) 6. Qe2 c5 7. O-O-O Nc6 8. dxc5 b6 9. exd5 exd5 10. cxb6 axb6 11. a3 Ba6 12. Qe1 b5 13. Ne5 Nxe5 14. Qxe5 b4 15. a4 Ng4 {Domenche Redondo,F (1768)-Hernández Delgado,J (1925) ICCF 2019 0-1 (30)}) (4. c4 b6 5. e3 O-O 6. Be2 Bb7 7. O-O Nh5 8. Nc3 Nxf4 9. exf4 c5 10. d5 d6 11. Bd3 Na6 12. Re1 Nc7 13. dxe6 fxe6 14. g3 Qe8 15. a4 Qh5 {Vrbica,L (2269)-Frica,S (2258) ICCF 2017 1-0 (62)}) (4. Nc3 Bb4 (4... O-O 5. e4 d5 6. e5 Ne4 7. Qd3 Bb4 8. Be2 b6 9. Qe3 c5 10. O-O Nxc3 11. bxc3 cxd4 12. cxd4 Qc7 13. a3 Bc3 14. Rab1 Ba6 15. Bxa6 {Piera i Arbat,J (1776) -Hernández Delgado,J (1802) ICCF 2009 1/2-1/2 (48)}) 5. e3 Nd5 6. Qd2 Bxc3 7. bxc3 Nxf4 8. exf4 O-O 9. Bd3 d5 10. O-O b6 11. a4 c5 12. dxc5 bxc5 13. c4 Nc6 14. Rfe1 Rb8 15. cxd5 exd5 {Hlavácek,L (1902)-Krett,V (1618) ICCF 2013 1-0 (33)}) (4. c3 O-O 5. e3 d6 6. Nbd2 Nh5 7. Bd3 Nxf4 8. exf4 Nd7 9. Qe2 c5 10. O-O cxd4 11. Nxd4 Nf6 12. Rfe1 Bd7 13. c4 d5 14. b3 Bb4 15. Rec1 Ba3 {Grandi,C (1400)-Braider,C ICCF 2018 0-1 (26)}) 4... Nh5 (4... O-O 5. Bd3 (5. h3 d6 6. c4 c5 7. dxc5 e5 8. Bg5 Qa5+ 9. Nc3 Qxc5 10. e4 Be6 11. Rc1 Qc6 12. Bd3 Nbd7 13. Qe2 h6 14. Bd2 Nc5 15. Bc2 a5 16. b3 Bd7 {Egger,R-Campani,P (1587) ICCF 2018 1-0 (62)}) 5... c5 6. c3 b6 7. Nbd2 cxd4 8. exd4 Ba6 9. Bxa6 Nxa6 10. O-O d6 11. h3 Nc7 12. Re1 Ncd5 13. Bg3 b5 14. Qb3 Qd7 15. Rac1 a5 16. Qc2 {Grummitt,W (1917)-Isea Fernández,G (2021) ICCF 2020 (64)}) (4... Nc6 5. Nbd2 (5. c4 O-O ( 5... b6 6. Nc3 O-O 7. a3 Nh5 8. Bg3 f5 9. d5 Nxg3 10. hxg3 Na5 11. e4 fxe4 12. Nxe4 h6 {0-1 (12) Lozano,C (1599)-Rivollier,F (1641) ICCF 2017}) 6. Nc3 d5 7. Rc1 Re8 8. a3 Bd6 9. Bg5 Be7 10. Qc2 a6 11. Bd3 h6 12. Bh4 b6 13. cxd5 exd5 14. O-O Bb7 15. b4 Nh5 16. Bxe7 Rxe7 {Sever,K-Magerl,Z ICCF 2015 1-0}) (5. h3 d6 6. a3 Nd7 7. c4 O-O 8. Bg3 e5 9. Nc3 f5 10. d5 Ncb8 11. Be2 Qe8 12. O-O g5 13. b4 f4 14. Bh2 h6 15. exf4 gxf4 16. Bd3 {Recasens Sánchez,J (2029)-Garcia,H (2290) ICCF 2007 1-0 (47)}) 5... b6 6. h3 O-O 7. Bd3 Bb7 8. c3 Nd5 9. Bh2 f5 10. Qc2 ( 10. O-O g5 11. Ne5 d6 12. Nxc6 Bxc6 13. Re1 Qd7 14. e4 fxe4 15. Bxe4 Bf6 16. Bf3 Rae8 17. Bg4 Bb7 18. Ne4 Bd8 19. Bh5 Re7 20. Nxg5 Rg7 21. Bg4 Rxg5 { Hayward,C-Pronovost,D (1741) ICCF 2015 1/2-1/2 (34)}) 10... Bg5 11. Nxg5 Qxg5 12. Rg1 Qh5 13. Nf3 Na5 14. O-O-O d6 15. Be2 Bc6 16. Ne5 {Nurmi,R (1651) -Lockwood,A (2205) ICCF 2009 1/2-1/2 (44)}) 5. Bg3 Nxg3 (5... O-O 6. Bd3 b6 ( 6... d5 7. c4 (7. Nc3 a6 8. Ne2 h6 9. Nf4 Nxg3 10. hxg3 Nd7 11. c3 c5 12. Bc2 b6 13. Ne5 Bd6 14. Ng4 Bxf4 15. gxf4 {Dunks,P (1902)-Radytia,A (1936) ICCF 2017 1/2-1/2 (30)}) 7... dxc4 8. Bxc4 a6 9. Qc2 h6 10. Nbd2 Nxg3 11. hxg3 c5 12. dxc5 Bxc5 13. O-O-O b5 14. Bd3 Qe7 {1/2-1/2 (14) Albrecht,M (1894) -Horváth,J (1880) ICCF 2020}) 7. Ng5 Bb4+ 8. c3 Qxg5 9. cxb4 Nxg3 10. hxg3 h6 11. Nd2 Bb7 12. Rc1 Rc8 13. g4 Qe7 14. f4 Qxb4 15. g5 Qxb2 16. Rc2 Qa3 17. Nc4 {Díaz Rubí,F (2177)-Holzer,J (2101) ICCF 2018 1/2-1/2 (44)}) 6. hxg3 c5 (6... O-O 7. Bd3 f5 8. Nc3 Nc6 9. g4 d5 10. Qd2 a6 11. O-O-O b5 12. Ne2 Qd6 13. Nf4 g5 14. Ne2 fxg4 15. Bxh7+ Kg7 16. Qd3 Rf6 17. Nxg5 Nb4 18. Qd2 {Owens,J (1300) -Weiner,J (2171) ICCF 2010 1-0 (32)}) 7. dxc5 Bxc5 8. Nbd2 d5 9. Nb3 (9. c4 Nc6 {0-1 (9) Owens,J (1300)-Weiner,J ICCF 2009}) 9... Be7 10. Bd3 Nc6 11. c3 e5 12. e4 Bg4 13. Qd2 d4 14. Bb5 Qb6 15. Nxe5 {Bapple,E-Ragan,A ICCF 2009 1-0 (30)}) ( 3... Nh5 4. Bg3 (4. Bg5 Be7 (4... Nf6 5. e3 Be7 6. Bd3 h6 7. Bf4 Nh5 8. Bg3 Nxg3 9. hxg3 O-O 10. Nbd2 d5 11. c3 c5 12. Qc2 c4 13. Bh7+ Kh8 14. O-O-O Nd7 15. Ne5 Nxe5 16. dxe5 {Mironik,P (1564)-Bourgault,J ICCF 2018 0-1}) 5. Bxe7 Qxe7 6. Nbd2 (6. c3 d6 7. e4 O-O 8. Bd3 Nf4 9. Bc2 Nxg2+ 10. Kf1 Nf4 11. e5 f6 12. exd6 cxd6 13. Rg1 e5 14. Rg3 e4 15. Ne1 d5 16. Kg1 Nc6 17. Ng2 Nh3+ { Clarke,P-Winter,M (1874) ICCF 2015 1/2-1/2 (62)}) 6... d5 7. e3 Nf6 8. Bd3 Nbd7 9. Ne5 Nxe5 10. dxe5 Nd7 11. f4 Nc5 12. Nb3 Nxd3+ 13. cxd3 b6 14. O-O c5 15. Qe2 Ba6 {Clarke,P-Winter,M (1874) ICCF 2015 1/2-1/2 (47)}) 4... Nxg3 5. hxg3 d6 6. e3 (6. e4 Nd7 7. Qd2 g6 8. Nc3 Bg7 9. g4 e5 10. dxe5 Nxe5 11. Nxe5 Bxe5 12. Be2 Be6 13. f4 Bg7 14. O-O-O Qe7 15. Qe3 c6 16. Kb1 b5 17. Qf3 O-O {Scott,P (2161)-Winter,M (1923) ICCF 2017 1-0 (37)}) 6... Nd7 7. Bd3 g6 8. c4 Bg7 9. Nc3 Nf6 10. Qc2 Bd7 11. O-O O-O 12. Rac1 Qe7 13. Rfe1 c5 14. dxc5 dxc5 15. Ne5 { Grummitt,W (1955)-Winter,M (1874) ICCF 2015 1/2-1/2}) (3... Nd5 4. Bg3 (4. Bg5 f6 5. Bh4 g5 6. Bg3 Nc6 7. e3 h5 8. h3 a6 9. c3 h4 10. Bh2 d6 11. Bd3 f5 12. g4 hxg3 13. fxg3 Rxh3 {0-1 (13) Mironik,P (1731)-Gugler,G ICCF 2016}) 4... f5 5. e3 b6 (5... Be7 6. c4 Nf6 7. Nc3 O-O 8. Bd3 c6 9. O-O Nh5 10. Qd2 Na6 11. a3 g5 12. c5 g4 13. Ne5 Nxg3 14. hxg3 d6 15. cxd6 Bxd6 16. Nc4 Bc7 17. b4 {Volf,M (1957)-Esen,C (1862) ICCF 2015 1-0 (61)}) 6. h4 Bb7 7. h5 Nc6 8. c4 Bb4+ 9. Nbd2 Nf6 10. h6 g6 11. a3 Bd6 12. d5 exd5 13. cxd5 Ne7 14. Bxd6 cxd6 15. Bc4 { Zittel,M-Gibson,T ICCF 2012 1/2-1/2 (51)}) (3... Bb4+ 4. c3 (4. Nbd2 O-O 5. c3 Be7 6. e4 d6 7. Bd3 b6 8. O-O Bb7 9. Qe2 Nbd7 10. Nc4 Re8 11. e5 {1-0 (11) Matos,B (1441)-Fletcher,A (1412) ICCF 2020}) 4... Be7 5. Nbd2 d5 6. e3 O-O 7. Bd3 Nbd7 8. Qe2 (8. Ne5 c5 9. h3 c4 10. Be2 Nxe5 11. Bxe5 Nd7 12. Bg3 b5 13. Bf3 Bb7 14. O-O Nf6 15. Qc2 Bd6 16. Bh4 Be7 17. Rfe1 Qd7 18. e4 Nxe4 19. Bxe7 Qxe7 {Tavadyan,T (1814)-Bellisario,C (1479) ICCF 2020 1-0 (40)}) 8... c5 9. O-O Nh5 10. Be5 f6 11. Bg3 e5 12. e4 dxe4 13. Qxe4 f5 14. Qd5+ Kh8 15. Bxe5 { Ford,S-Kocher,R ICCF 2016 1-0 (48)}) (3... Nc6 4. e3 (4. c4 Bb4+ 5. Nc3 Bxc3+ 6. bxc3 Qe7 7. Qc2 d6 8. e3 h6 9. Be2 a6 10. Bg3 O-O 11. e4 Nd7 12. O-O Re8 13. Rfe1 Qd8 14. e5 Nf8 15. Bd3 Bd7 {Picken,R (1743)-Smith,A (1543) ICCF 2019 1-0 (29)}) (4. Nbd2 Nh5 5. Bg5 Be7 6. Bxe7 Qxe7 7. c3 O-O 8. g4 Nf6 9. Bh3 e5 10. g5 Nd5 11. dxe5 Nf4 12. Bf1 Nxe5 13. Ne4 Nxf3+ 14. exf3 d5 15. Qd2 {Sesko, M-Rihtaric,I (1988) ICCF 2007 0-1 (29)}) 4... Nh5 (4... Bb4+ 5. c3 Ba5 6. Bd3 d5 7. O-O Bd7 8. Nbd2 h6 9. Qe2 g5 10. Be5 Nxe5 11. Nxe5 Qe7 12. a4 c6 13. b4 Bc7 14. Rfb1 g4 15. g3 h5 16. b5 {Stuart,P-Duncovich,M (1728) ICCF 2008 1-0 (48)}) (4... Bd6 5. Bxd6 cxd6 6. Nbd2 O-O 7. c3 d5 8. Bd3 d6 9. O-O e5 10. dxe5 dxe5 11. e4 Bg4 12. exd5 Qxd5 13. Qc2 Bxf3 14. Bc4 Be4 15. Nxe4 Qxc4 16. Nxf6+ {Davis,J (1293)-Colotti,C ICCF 2020 0-1}) (4... b6 5. Bb5 Bd6 6. Ne5 Bb7 7. Nc3 a6 8. Bxc6 Bxc6 9. Nxc6 dxc6 10. Bg5 h6 11. Bh4 Be7 12. Qf3 Nd5 13. Bg3 O-O 14. O-O Nxc3 15. bxc3 Qd7 16. e4 {Santamaría Navarro,F (1800)-Jardin Rentero,F ICCF 2012 0-1 (67)}) 5. Bg3 Nxg3 6. hxg3 d5 7. Nc3 Bb4 8. Qd3 f5 9. O-O-O Bd7 10. Be2 Qe7 11. Kb1 a6 {0-1 (11) Pereyra,D (1584)-Pasmov,A (1771) ICCF 2017}) ( 3... b6 4. Nc3 (4. g3 Bb7 5. Bg2 c5 (5... d5 6. c3 Be7 7. Nbd2 O-O 8. O-O c5 9. Ne5 Nc6 10. Nxc6 Bxc6 11. Nf3 Rc8 12. Ne5 Bb7 13. Rc1 Nd7 14. Qd2 Nxe5 15. Bxe5 {Maylott,P (2136)-Mather,R (2039) ICCF 2020 1/2-1/2 (41)}) 6. O-O cxd4 7. Nbd2 d6 8. c4 dxc3 9. bxc3 Qc7 10. Rb1 Nd5 11. Ne4 Nxf4 12. Nxd6+ Bxd6 13. e4 Nxg2 14. Qa4+ Qc6 15. Qd4 Qxe4 {Sutherland,D-Kovernikov,B (2331) ICCF 2009 0-1}) 4... Bb4 5. a3 Bxc3+ 6. bxc3 Ba6 7. e3 Bxf1 8. Rxf1 O-O 9. Qd3 d5 10. Bg5 c5 11. Ne5 Qd6 12. Bxf6 gxf6 13. Nf3 Rc8 14. g4 Nd7 15. h4 {Brodie,P (1786)-Mason, I (2194) ICCF 2017 0-1 (52)}) (3... d6 4. Nc3 (4. e3 h6 5. Bd3 Nc6 6. a3 d5 7. Nbd2 Bd6 8. Bxd6 Qxd6 9. c3 a6 10. e4 dxe4 11. Bxe4 Nxe4 12. Nxe4 Qe7 13. O-O O-O 14. h3 Rd8 15. Qc2 e5 {Arteaga Hernández,L (1857)-González Solé,F (1701) ICCF 2013 1/2-1/2 (31)}) 4... Nc6 5. e4 Be7 6. d5 exd5 7. exd5 Nb8 8. Be2 O-O 9. O-O Nbd7 10. Re1 a6 11. Nd4 Nb6 12. Bf3 Re8 13. b3 Bf8 14. Qd2 Bg4 15. h3 { Arteaga Hernández,L (1817)-González Solé,F (1701) ICCF 2013 1-0 (44)}) (3... h6 4. Nc3 (4. c4 b6 5. a3 g5 6. Bg3 Ne4 7. e3 Bg7 8. Bd3 Nxg3 9. hxg3 c5 10. Nc3 Bb7 11. d5 Bxc3+ 12. bxc3 Qf6 13. Qb3 Kf8 14. a4 d6 15. a5 Kg7 {Fuchs,J (2326)-Komar,M (2335) ICCF 2018 1/2-1/2 (34)}) (4. e3 Nh5 5. Bg3 Nxg3 6. hxg3 Be7 7. c4 O-O 8. Nc3 c5 9. dxc5 Na6 10. a3 Nxc5 11. b4 Na6 12. Bd3 Nc7 13. Bc2 d5 14. Qd3 f5 15. O-O a5 {Caron,S (1937)-Meller,E (1913) ICCF 2017 1-0 (46)}) ( 4. a3 c5 5. e3 Nc6 6. c4 cxd4 7. exd4 g5 8. Be3 Ng4 9. Bd2 Bg7 10. Nc3 d5 11. cxd5 exd5 12. Bd3 O-O 13. O-O Nxd4 14. Nxd4 Bxd4 15. h3 Nf6 {Nitschke,N (2029) -Veselinov,R (2077) ICCF 2019 1/2-1/2 (33)}) 4... Bb4 5. Qd3 b6 6. O-O-O O-O 7. Qc4 Qe7 8. a3 Bxc3 9. Qxc3 d6 10. e3 Nd5 11. Qd3 Nxf4 12. exf4 Bb7 13. f5 Nd7 14. fxe6 Qxe6 15. Re1 {Hamer,J (1872)-Maylott,P (1878) ICCF 2013 0-1 (29)}) ( 3... c6 4. e3 Qb6 5. b3 Be7 6. h3 c5 7. g4 d5 8. Nbd2 cxd4 9. exd4 Bb4 10. g5 Nh5 11. Ne5 Nxf4 12. Nef3 Nc6 13. a3 Bc3 14. Rb1 Nxd4 15. Nxd4 {Pereyra,D (1895)-Martínez Pinares,K ICCF 2016 0-1}) (3... Ng4 4. h3 Nxf2 5. Kxf2 Bb4 6. e3 d6 7. c3 Ba5 8. Nbd2 Bb6 9. Bd3 a6 10. Nc4 Nd7 11. Nxb6 Nxb6 12. Qc2 g6 13. Bh6 Bd7 14. c4 Qe7 15. a4 {Beavan,R (1890)-Williams,R (1721) ICCF 2011 1-0 (30) }) 4. e3 (4. c3 Nc6 (4... cxd4 5. cxd4 (5. Bxb8 Rxb8 6. Nxd4 d5 7. e3 a6 8. Nd2 e5 9. N4f3 Bd6 10. Be2 b5 11. Qc2 Qc7 12. Rc1 O-O 13. h3 Bd7 14. e4 dxe4 15. Nxe4 Nxe4 16. Qxe4 Bc6 {Karjalainen,J-Rhodes,L (1820) ICCF 2021 0-1 (32)}) (5. Nxd4 Nc6 6. e3 d5 7. Bd3 Bd6 8. Bxd6 Qxd6 9. Nd2 O-O 10. f4 e5 11. Nxc6 Qxc6 12. fxe5 Ng4 13. Nf3 Nxe3 14. Qd2 Qb6 15. Nd4 Ng4 16. a4 Nxe5 {Gérard,A (1908) -Morosi,D (2069) ICCF 2015 0-1 (38)}) 5... Qb6 (5... b5 6. e3 a6 7. a4 (7. Nbd2 Bb7 8. a4 (8. Rc1 Nc6 9. a3 Be7 10. h3 O-O 11. Bd3 d6 12. O-O e5 13. Bg3 exd4 14. exd4 Qd7 15. Ne4 Na5 16. Re1 Rfe8 17. Nfd2 Nxe4 18. Bxe4 Bg5 19. Bxb7 Qxb7 {Campani,P (2126)-Blittkowsky,R (2152) ICCF 2020 1/2-1/2 (33)}) 8... b4 9. h3 a5 10. Bd3 Be7 11. O-O O-O 12. Qe2 d5 13. Rfc1 Bd6 14. Ne5 Qb6 15. Bb5 Ba6 16. Nec4 dxc4 17. Nxc4 Bxb5 18. axb5 Qxb5 {Beyen,R-Diaconescu,P ICCF 1984 1-0 (25)} ) (7. Bd3 Bb7 8. O-O (8. Nbd2 Nc6 9. a3 Be7 10. h3 O-O 11. O-O Qb6 12. Rc1 Rac8 13. Qe2 h6 14. Rc2 Na5 15. Rfc1 Rxc2 16. Rxc2 {Colombo,F (2098)-Morosi,D (2239) ICCF 2007 1/2-1/2}) 8... Nc6 9. Nbd2 Be7 10. a3 Nh5 11. Bg3 Nxg3 12. fxg3 O-O 13. Ne4 d6 14. h4 Na5 15. Nfg5 Bxe4 16. Bxe4 Bxg5 17. hxg5 d5 18. Bd3 Qxg5 { Humphrey,C-Hauser,D ICCF 2008 0-1 (25)}) 7... b4 8. Nbd2 Nc6 9. h3 Bb7 10. Bd3 Be7 11. Qe2 O-O 12. O-O d5 13. Rfc1 h6 14. Nb3 Nd7 15. Rc2 Qb6 16. a5 Qa7 17. Nfd2 {Owens,J (1300)-Disque,P ICCF 2012 1-0 (30)}) (5... Bb4+ 6. Nc3 O-O 7. Qc2 Nd5 8. Bg5 Qb6 9. e4 Nxc3 10. bxc3 Ba5 11. Bd3 h6 12. Bd2 d5 13. O-O dxe4 14. Bxe4 Nd7 15. Rab1 Qc7 16. Rfc1 Nf6 17. Bd3 {McDyer,F (1525)-Higgins,B (1662) ICCF 2020 0-1 (27)}) (5... d6 6. e3 a6 7. Bd3 Be7 8. h3 O-O 9. Nbd2 Nc6 10. Qb3 b5 11. O-O Bb7 12. Rac1 Rc8 13. a4 Na5 14. Rxc8 Bxc8 15. Qc2 Bd7 16. axb5 Bxb5 17. Bxb5 {Patterson,H-Sierra Oca,J ICCF 2013 1-0 (44)}) 6. Qc2 Nc6 7. e3 Qa5+ ( 7... Bb4+ 8. Nbd2 d5 9. Bd3 Bd7 10. O-O Rc8 11. Qd1 Be7 12. b3 O-O 13. a3 h6 14. Qe2 Nh5 15. Ne5 Nxf4 16. exf4 Nxe5 17. dxe5 Rc3 18. b4 a6 19. Nf3 {Humbert, P (1343)-Tatinian,W ICCF 2015 0-1 (35)}) 8. Nc3 Nd5 9. Bg3 Bb4 10. Rc1 Qxa2 11. Bd3 Nxc3 12. bxc3 Qxc2 13. Rxc2 Ba3 14. e4 b6 15. Ke2 Bb7 16. Ra1 {Gérard,A (1866)-Rihtaric,I (2195) ICCF 2011 0-1 (38)}) (4... Be7 5. e3 (5. h3 cxd4 (5... O-O 6. e3 d5 (6... b6 7. Nbd2 cxd4 8. cxd4 d6 9. Rc1 Qd7 10. Be2 Ba6 11. Bxa6 Nxa6 12. O-O Rac8 13. a3 Nd5 14. Bg3 f5 15. Nc4 Nac7 16. Kh2 Nf6 {Nurmi, R-Thörnqvist,C ICCF 2007 0-1 (29)}) 7. Bd3 Bd6 8. Ne5 Nc6 9. Nd2 Qc7 10. Ndf3 h6 11. O-O Nd7 12. Nxc6 bxc6 13. Bxd6 Qxd6 14. Rc1 a5 15. c4 Ba6 16. Rc3 cxd4 17. exd4 {Selen,D (2465)-Bubir,A (2545) ICCF 2014 1/2-1/2 (60)}) 6. cxd4 Qb6 ( 6... O-O 7. e3 Qa5+ 8. Nbd2 b6 9. a3 Ba6 10. b4 Qd5 11. Bxa6 Nxa6 12. Qe2 Qb7 13. O-O Rfc8 14. Rfc1 Nc7 15. e4 h6 16. Qe3 a5 17. bxa5 Rxa5 18. Nc4 {Grice, J-Grabski,D ICCF 2021 0-1 (45)}) 7. Qb3 Qxb3 8. axb3 Nc6 9. Nc3 O-O 10. e4 Nb4 11. Rc1 d5 12. e5 Ne4 13. Be2 Bd7 14. O-O Rfc8 15. Nxe4 dxe4 16. Nd2 Rxc1 { Pitter,J (1873)-Hartl,H ICCF 2011 0-1}) 5... Nh5 (5... O-O 6. Nbd2 b6 7. Be2 Nc6 8. O-O Bb7 9. Rc1 Nh5 10. Be5 d6 11. Bg3 Nxg3 12. fxg3 Rc8 13. a3 a6 14. b4 d5 15. bxc5 bxc5 16. Rb1 Qc7 17. Qa4 {Hermansen,R-Stevens,M (1816) ICCF 2010 0-1}) 6. Bg3 d5 (6... Nxg3 7. hxg3 Nc6 (7... h6 8. Nbd2 cxd4 9. exd4 d6 10. Bd3 Nd7 11. Qe2 Nf6 12. Ne4 Nd5 13. O-O O-O 14. a3 Bd7 15. c4 Nf6 16. Nxf6+ Bxf6 17. Qe4 g6 18. Rad1 Bc6 19. Qf4 {Norman,N (2109)-Bell,I (2289) ICCF 2011 0-1 (52)}) 8. Bd3 d5 9. Nbd2 c4 10. Bc2 b5 11. Ne5 Nxe5 12. dxe5 b4 13. cxb4 Bxb4 14. Ba4+ Bd7 15. Bxd7+ Qxd7 16. O-O a5 17. Nf3 O-O 18. Nd4 {Eraclides,G (1960) -Schuster,P (1919) ICCF 2015 0-1 (40)}) (6... Nc6 7. Nbd2 cxd4 (7... f5 8. Bd3 d5 9. Be5 O-O 10. h3 f4 11. e4 cxd4 12. cxd4 Nxe5 13. dxe5 g6 {0-1 (13) Seymour,J-Ho,C ICCF 2012}) 8. cxd4 O-O 9. a3 d6 10. Bc4 Bd7 11. d5 exd5 12. Bxd5 Qa5 13. Qb3 Nf6 14. Bc4 Qc5 15. Be2 Be6 16. Qxb7 Rfb8 17. Qa6 Rxb2 18. O-O {Zelovic,V (2178)-Perina,G (2262) ICCF 2005 1-0 (56)}) 7. Nbd2 Nd7 8. Bd3 g6 9. O-O O-O 10. Qe2 Nxg3 11. hxg3 Kg7 12. a4 h5 13. Rfe1 Nf6 14. Ne5 Ng4 15. Ndf3 Bd6 16. e4 {Vidal Melendez,I-Barclay,A (2376) ICCF 2020 1/2-1/2}) (4... Qb6 5. Qb3 Qxb3 (5... Nc6 6. e3 Nd5 7. Qxb6 Nxb6 8. Nbd2 cxd4 9. exd4 Nd5 10. Bg3 f5 11. c4 Nf6 12. Bd3 Be7 13. a3 d5 14. b4 dxc4 15. Nxc4 O-O 16. Rd1 Rd8 17. Be2 { Alozy,F (1997)-Boittiaux,I ICCF 2010 0-1 (56)}) 6. axb3 Nc6 7. e3 b6 8. Nbd2 Bb7 9. dxc5 bxc5 10. Ba6 Nd8 11. Bc7 Bxa6 12. Rxa6 Be7 13. Nc4 Nd5 14. Bg3 Nc6 15. Ke2 f6 16. e4 {Nigro Monasterios,N (2068)-Suárez,R (2051) ICCF 2020}) ( 4... b5 5. a4 b4 6. e3 Bb7 7. Bd3 Nc6 8. O-O Be7 9. dxc5 Bxc5 10. Nbd2 O-O 11. Qc2 h6 12. a5 Rc8 13. Rfc1 Be7 14. a6 Ba8 15. e4 bxc3 16. bxc3 {Bandl,W (2131) -Deneuville,C (2184) ICCF 2011 0-1 (59)}) (4... b6 5. Nbd2 Ba6 6. Qa4 Qc8 7. c4 Bb7 8. e3 Bc6 9. Qb3 Qb7 10. h3 cxd4 11. exd4 Be7 12. Bd3 d5 13. O-O a5 14. Rac1 a4 15. Qc2 O-O 16. Rfe1 {Bohak,J (2243)-Rosso,P ICCF 2005 1/2-1/2}) (4... d6 5. dxc5 d5 6. Bxb8 Rxb8 7. b4 Bd7 8. e3 a5 9. Ne5 axb4 10. cxb4 b6 11. Nxd7 Nxd7 12. c6 Bxb4+ 13. Nd2 Ne5 14. Bb5 O-O 15. a3 Bc5 16. Nf3 {Moen,K (1714) -MacTilstra,I ICCF 2014 0-1}) 5. e3 (5. Nbd2 cxd4 6. cxd4 Qb6 7. Nc4 Bb4+ 8. Bd2 Bxd2+ 9. Qxd2 Qc7 10. Rc1 d5 11. Nce5 Ne4 12. Qb4 Nxb4 13. Rxc7 O-O 14. a3 Na6 15. Rc1 f6 16. Nd3 Bd7 {Frágola,H (1721)-Rolón,M ICCF 2020 0-1 (38)}) (5. h3 Qb6 6. Qc2 cxd4 7. c4 e5 8. Nxe5 Nxe5 9. Bxe5 Qa5+ 10. Nd2 Qxe5 11. a3 b6 12. Nf3 Qa5+ 13. b4 Bxb4+ 14. Kd1 Bc3 15. Ra2 Bb7 {Bray,P (1514)-Jones,P (2003) ICCF 2020 0-1 (28)}) 5... Nh5 (5... Be7 6. Be2 (6. Nbd2 cxd4 (6... Nh5 7. dxc5 (7. Bg3 cxd4 8. cxd4 O-O 9. Ne5 Nxg3 10. Nxc6 bxc6 11. hxg3 h6 12. Bd3 Rb8 13. Nb3 a5 14. O-O d6 15. Rb1 Qb6 16. Qf3 Rd8 17. Qe2 Bd7 18. Rfd1 a4 {Martín Lozano,M-García Ramírez,C (2233) ICCF 2017 1/2-1/2 (26)}) 7... Nxf4 8. exf4 Qc7 9. Ne4 Qxf4 10. Nd6+ Bxd6 11. Qxd6 Qxd6 12. cxd6 b6 13. Be2 Bb7 14. h4 f6 15. Rg1 g6 {Pascoal,J (2219)-Brotherton,T (2200) ICCF 2020 1/2-1/2 (30)}) (6... O-O 7. Bd3 b6 (7... d6 8. dxc5 d5 9. b4 Nd7 10. Bc2 Bf6 11. O-O Bxc3 12. Bxh7+ Kh8 13. b5 Bxa1 14. bxc6 bxc6 15. Bd3 Bc3 16. Nd4 Nf6 17. Bd6 Bxd2 18. Qxd2 Bd7 19. Nf3 {Burmeister,F (2249)-Arnold,E (1971) ICCF 2017 1-0 (42)}) (7... Nd5 8. Bg3 b6 9. e4 Nc7 10. O-O d5 11. Qe2 Bb7 12. e5 a5 13. h3 Qc8 14. Bh4 Bxh4 15. Nxh4 Ba6 16. Rfc1 a4 17. Nhf3 a3 18. b4 cxb4 19. Nf1 {Rodríguez Bogado,J (2049)-Bruce,R (1941) ICCF 2019 0-1 (54)}) 8. O-O Nh5 9. Qc2 h6 10. h3 Nxf4 11. exf4 cxd4 12. cxd4 Nb4 13. Qb3 Nxd3 14. Qxd3 Bb7 15. Rac1 Rc8 16. a3 Rxc1 17. Rxc1 Qb8 18. Ne5 {Dagklis,D-Molodiuc,V ICCF 2015 0-1 (31)}) 7. exd4 O-O 8. h3 d6 9. g4 (9. Bc4 Qc7 10. O-O Bd7 11. Bd3 a6 12. Re1 Nd5 13. Bg3 b5 14. Ne4 Rfc8 15. Rc1 Nd8 16. c4 bxc4 17. Bxc4 Qb6 18. Bxd5 Rxc1 19. Qxc1 exd5 20. Nc3 Be6 { Jung,B (2330)-Hens,B (2338) ICCF 2010 1-0 (65)}) 9... e5 10. Be3 Nd5 11. Qc2 Be6 12. Bd3 g6 13. Bh6 exd4 14. Bxf8 Bxf8 15. Nxd4 Nxd4 16. cxd4 Bh6 17. O-O-O Nb4 {Pereyra,D (1895)-Arambulo Urdaneta,H ICCF 2016 0-1}) (6. Bd3 Nh5 7. Bg3 cxd4 8. exd4 O-O 9. Nbd2 g6 10. Qe2 f5 11. h3 Nxg3 12. fxg3 Bd6 13. Ne5 Qg5 14. Ndf3 Qxg3+ 15. Qf2 Nxe5 16. dxe5 Bxe5 17. O-O Bc7 {Roberts,A (1836)-Neijhof,R (2073) ICCF 2010 0-1 (45)}) (6. Bg3 Ne4 7. Nbd2 Nxg3 8. hxg3 d5 9. Qc2 cxd4 10. exd4 h6 11. O-O-O a6 12. Bd3 b5 13. Ne1 Qb6 14. f4 b4 15. Qb3 Bd7 16. g4 Rb8 17. Nef3 Na5 {Pereyra,D (1530)-Haug,G (2158) ICCF 2017 0-1}) (6. h3 cxd4 7. exd4 d5 8. Nbd2 O-O (8... Bd6 9. Bxd6 Qxd6 10. Bb5 a6 11. Ba4 b5 12. Bc2 Bb7 13. Nb3 Nd7 14. O-O O-O 15. Qd3 g6 16. Rfe1 Kg7 17. Qe3 Qc7 18. h4 Nf6 19. Nc5 Bc8 20. b4 {Moisa,L (2278)-Ardelean,R (2029) ICCF 2016 1-0 (36)}) 9. Bd3 a6 10. a4 Re8 11. O-O Nh5 12. Bh2 Nf6 13. Ne5 Bd7 14. Qe2 Qb6 15. b4 Rec8 16. a5 Qd8 17. f4 Na7 {Pitter,J (1860)-Bryar,H (1871) ICCF 2014 0-1 (39)}) 6... O-O 7. Nbd2 d5 8. O-O a6 9. h3 Bd7 10. a4 {1-0 (10) Peralta,D-Guzmàn Figueroa,A (1490) ICCF 2020}) (5... Qb6 6. b3 (6. Qc2 Nh5 7. Bg3 cxd4 8. exd4 Nxg3 9. hxg3 f5 10. Nbd2 Be7 11. O-O-O d5 12. Ne1 Bd7 13. f4 Nxd4 14. cxd4 Rc8 15. Qxc8+ Bxc8 16. Nb3 Bd7 17. Nf3 a5 {Pereyra,D (1601)-Vercauteren,N (1672) ICCF 2017 0-1}) 6... d5 7. Bd3 Nh5 8. Be5 cxd4 9. Bxd4 Qc7 10. Nbd2 Bd7 11. Ng5 Nf6 12. Bxf6 gxf6 13. Nxh7 Be7 14. Rc1 f5 15. Qh5 Qe5 16. Qh6 Rg8 17. h4 {Wilson,G (1930)-Cooper,R (1947) ICCF 2015 0-1 (31)}) (5... d6 6. dxc5 e5 7. Bg3 e4 8. Nd4 dxc5 9. Nxc6 Qxd1+ 10. Kxd1 bxc6 11. Nd2 Be7 12. h4 Bg4+ 13. Be2 O-O-O 14. Bxg4+ Nxg4 15. Kc2 f5 16. Nc4 Rd3 17. Rad1 {Laine,E (1876)-Bonnaud,T ICCF 2021 1-0}) 6. Bg5 (6. Bg3 Nxg3 (6... d5 7. Bd3 (7. Nbd2 Be7 8. dxc5 Bxc5 9. Bh4 Be7 10. Bxe7 Qxe7 11. Bb5 O-O 12. O-O Bd7 13. e4 dxe4 14. Nxe4 Rad8 15. Qd6 Qxd6 16. Nxd6 a6 17. Be2 Nf4 18. Bd1 Na5 {Garcia,O-Ballow,J (2408) ICCF 2017 1/2-1/2 }) 7... Qb6 8. Qc2 cxd4 9. exd4 Bd7 10. Nbd2 Rc8 11. O-O Nb4 12. Qb1 Nxd3 13. Qxd3 Bb5 14. c4 Bxc4 15. Nxc4 dxc4 16. Qc2 Nxg3 17. hxg3 Be7 18. Qa4+ { Grummitt,W (1980)-Cooper,R (1973) ICCF 2015 1/2-1/2 (55)}) 7. hxg3 d5 8. a4 (8. Nbd2 Bd7 (8... cxd4 9. exd4 h5 10. g4 h4 11. Nb3 g5 12. Qd2 Rg8 13. O-O-O Qf6 14. Bb5 Bd7 15. Nc5 Bxc5 16. dxc5 Qe7 17. Qe3 O-O-O 18. g3 hxg3 19. fxg3 f6 20. Bxc6 {Miskimmin,C-Cooper,R (1973) ICCF 2015 1/2-1/2 (45)}) (8... Bd6 9. Bd3 h6 10. Qe2 O-O 11. Bc2 (11. O-O-O c4 12. Bc2 b5 13. e4 b4 14. cxb4 Nxb4 15. Kb1 Qa5 16. a3 c3 17. axb4 Qxb4 18. Nb3 cxb2 19. Ng5 Be7 20. f4 a5 21. Rxh6 Bxg5 22. fxg5 gxh6 {Humphreys,B-Molina,J ICCF 2021 0-1 (31)}) 11... f5 12. Nh4 Qf6 13. f4 c4 14. Nhf3 Qg6 15. O-O-O b5 16. Rdg1 Be7 17. g4 Qxg4 {McLeod,S (2087) -Nucci,L (2106) ICCF 2019 1-0 (37)}) 9. Qc2 (9. Be2 h6 10. O-O cxd4 11. exd4 Bd6 12. a3 O-O 13. Re1 Re8 14. Rc1 Rc8 15. b4 Qf6 16. Nf1 a5 17. b5 Ne7 18. a4 Rc7 19. Ne3 h5 20. c4 b6 {Perry,W (1972)-Rimkus,B (2136) ICCF 2016 1/2-1/2 (39) }) 9... h6 10. O-O-O cxd4 11. exd4 Be7 12. Ng1 Nxd4 13. Qd3 Nc6 14. f4 Qc7 15. Qf3 Rd8 16. g4 e5 17. Qxd5 Bxg4 18. Qb5 Bxd1 19. Kxd1 O-O {Pereyra,D (1530) -Orlando,E ICCF 2017 0-1}) (8. Qc2 Qb6 9. Nbd2 g6 10. O-O-O Bg7 11. Ng1 cxd4 { 0-1 (11) Pereyra,D (1584)-Khairullin,R (2295) ICCF 2017}) (8. Bd3 h6 9. Nbd2 Bd7 10. Ne5 Nxe5 11. dxe5 Qc7 12. f4 c4 13. Bc2 Qb6 14. Ke2 Qxb2 15. Rb1 Qxc3 16. Rf1 Bc5 17. Rf3 O-O-O 18. Rc1 g5 19. Bb1 Qa5 {Picken,R (1778)-Elwood,D (1908) ICCF 2019 0-1 (37)}) 8... g6 9. Nbd2 cxd4 10. exd4 Bg7 11. Be2 O-O 12. O-O f6 {0-1 (12) Höber,M (1659)-Beltins,G (2071) ICCF 2018}) (6. Be2 Nxf4 7. exf4 d5 8. O-O Bd6 9. g3 O-O 10. Nh4 cxd4 11. cxd4 Qb6 12. Qd2 Nxd4 13. Bd3 Be7 14. Nc3 Bxh4 15. Kg2 Bf6 16. Rab1 Bd7 17. h4 Rac8 {Humbert,P (1343)-Aymard,M (2077) ICCF 2015 0-1 (25)}) (6. g4 Nxf4 7. exf4 Qc7 8. Qd2 Bd6 9. f5 exf5 10. gxf5 O-O 11. Be2 cxd4 12. Nxd4 Bf4 13. Qd3 Nxd4 14. Qxd4 d5 15. Na3 Re8 16. Qd3 Qe5 17. Nc2 Bxf5 {Humbert,P (1343)-Laliga,O (2152) ICCF 2015 0-1}) 6... Qb6 ( 6... Be7 7. Bxe7 Qxe7 8. Nbd2 {1-0 (8) Tavadyan,T (1832)-Bu Lin,X ICCF 2019}) 7. Qc2 (7. Na3 d5 8. dxc5 Bxc5 9. b4 Be7 10. Bxe7 Nxe7 11. Qd4 O-O 12. Bd3 Bd7 13. O-O f6 14. Rfd1 g6 15. Be2 e5 16. Qd2 Ba4 17. Rdc1 a5 18. Rab1 axb4 { Bredenhof,B (2181)-Farias Magalhães Filho,M (2015) ICCF 2012 1-0 (30)}) (7. Qb3 h6 8. Qxb6 axb6 9. Bh4 g5 10. Bg3 Kd8 11. Nbd2 d5 12. Be2 Nxg3 13. hxg3 Bg7 14. O-O Kc7 15. Nb3 c4 16. Nbd2 b5 17. a3 g4 18. Nh2 h5 {Sarkkinen,H (2043) -Lehtinen,P (2362) ICCF 2009 0-1 (28)}) (7. Nbd2 h6 8. Nc4 Qc7 9. Bh4 d5 10. Nce5 (10. g4 g5 11. gxh5 gxh4 12. Nce5 c4 13. Nxc6 bxc6 14. Qc2 Bd6 15. Be2 c5 16. dxc5 Be7 17. O-O-O Rb8 18. Kb1 Qxc5 19. e4 dxe4 20. Qxe4 Bf6 21. Bxc4 Ke7 { Belák,S (2272)-Zavrazhnov,A (2219) ICCF 2017 1/2-1/2 (28)}) 10... cxd4 11. exd4 Bd6 12. Bb5 g5 13. Bg3 Nxg3 14. hxg3 f6 15. Ng4 Qg7 16. Qe2 a6 17. Bd3 { Geluk,P (2127)-Schulenberg,H (2334) ICCF 2019 0-1 (54)}) 7... d5 8. Nbd2 (8. Be2 h6 9. Bh4 Bd7 10. Ne5 (10. Nbd2 cxd4 11. Nxd4 Nxd4 12. cxd4 Nf6 13. Bxf6 Rc8 14. Qb3 gxf6 15. Qxb6 axb6 16. Bd3 Bd6 17. Ke2 b5 18. Rhc1 Ra8 19. a3 Ke7 20. g3 Rhd8 21. Rab1 b4 {Rooms,T (2367)-Zarnescu,M (2395) ICCF 2010 1/2-1/2 (34)}) 10... Nxe5 11. dxe5 g5 12. Bxh5 gxh4 13. Nd2 Rg8 14. Qh7 Rg7 15. Qxh6 Qxb2 16. Rb1 Qxc3 17. Qf4 O-O-O 18. Bf3 Be7 19. Rb3 Qa5 {Picken,R (1856)-James, A (2197) ICCF 2016 0-1}) 8... h6 9. dxc5 Bxc5 10. Bh4 Bd7 11. Nb3 Bd6 12. Be2 Ne7 13. Nfd4 Nf6 14. Bxf6 gxf6 15. O-O e5 {Pinzón,N-Lobo,A (1738) ICCF 2016 0-1 (62)}) (4. Nc3 cxd4 (4... Nc6 5. a3 (5. d5 Nxd5 6. Nxd5 exd5 7. Qxd5 d6 8. Qb3 Be7 9. e4 O-O 10. c3 Qc7 11. Be2 Be6 12. Qc2 Ne5 13. O-O Rad8 14. Rad1 Bf6 15. Rd2 Qa5 16. a3 Qb6 {Littke,H (2232)-Sukhonos,V ICCF 2009 1/2-1/2}) 5... cxd4 6. Nxd4 d5 7. e3 Bd6 8. Bxd6 Qxd6 9. Be2 O-O 10. O-O e5 11. Ndb5 Qd8 12. f4 a6 13. fxe5 Nxe5 14. Nd4 Re8 15. Qd2 Qb6 16. a4 {Köntges,M (2362) -Rattinger,T (2350) ICCF 2006 0-1 (49)}) (4... a6 5. d5 d6 6. e4 Be7 7. Bd3 exd5 8. exd5 b5 9. O-O O-O 10. Re1 Bg4 11. h3 Bh5 12. a4 b4 13. Ne4 Nxe4 14. Bxe4 Nd7 {Mikuz,S-Roncea,I (1806) ICCF 2008 1-0 (29)}) (4... Qa5 5. e3 Nd5 6. Qd2 Nxf4 7. exf4 cxd4 8. Nxd4 a6 9. O-O-O Bb4 10. Nb3 Qc7 11. g3 O-O 12. Bg2 a5 13. a3 Be7 14. Nd4 d5 15. Qe2 Bf6 16. f5 {Ardila Barrera,F-Assunçao,J ICCF 2008 1/2-1/2 (54)}) 5. Nxd4 (5. Qxd4 Be7 6. Bxb8 Rxb8 7. Qxa7 Qc7 8. a3 Bc5 9. Nb5 O-O 10. Nxc7 Bxa7 11. Nb5 Bc5 12. e3 Be7 13. Na7 Ra8 14. Nxc8 Rfxc8 15. Bd3 d5 16. O-O Ne4 {Schönwetter,K (1890)-Ovcharenko,L (2238) ICCF 2010 0-1 (49)}) 5... a6 6. Qd3 (6. e4 Bb4 7. Bd3 Bxc3+ 8. bxc3 d6 9. Bg5 h6 10. Be3 O-O 11. Qf3 e5 12. Nf5 Bxf5 13. Qxf5 Qc8 14. Qxc8 Rxc8 15. c4 Nc6 16. Rb1 b5 17. cxb5 axb5 {Ryska,J (2082)-Caliskan,I (2024) ICCF 2010 0-1 (60)}) 6... d5 7. O-O-O Nbd7 ( 7... Bd6 8. Bxd6 Qxd6 9. e4 dxe4 10. Qe3 O-O 11. Nxe4 Nxe4 12. Qxe4 Nd7 13. Nf3 Qc7 14. Bd3 Nf6 15. Qe5 Qxe5 16. Nxe5 b5 17. Rhe1 Bb7 18. f3 Rfd8 19. b3 { Woodard,D (2326)-Vertongen,W (2208) ICCF 2012 1/2-1/2 (37)}) 8. Nb3 Qb6 9. e4 d4 10. Ne2 e5 11. Bg3 a5 12. a4 Bb4 13. f4 Ng4 14. fxe5 Ne3 15. Nexd4 Nxd1 { Savoca,A (2361)-Van tricht,M (2302) ICCF 2009 1-0 (63)}) (4. Bxb8 Rxb8 5. Nc3 ( 5. e3 Qb6 6. Qc1 d5 7. c3 Bd6 8. Bd3 O-O 9. Nbd2 c4 10. Bc2 Qc7 11. e4 Nxe4 12. Nxe4 dxe4 13. Bxe4 f5 14. Bc2 b5 15. Qe3 Bb7 16. O-O-O Bf4 {Ford,S (1576) -Smith,A (1849) ICCF 2017 0-1}) 5... b5 6. a3 a6 7. e3 Be7 8. dxc5 Bxc5 9. Nd4 Bb7 10. Nb3 Be7 11. Be2 O-O 12. O-O Ne4 13. Nxe4 Bxe4 14. Bf3 Bg6 15. Bh5 Be4 { Pereyra,D-Döner,M ICCF 2014 0-1 (41)}) (4. c4 cxd4 (4... Qb6 5. e3 Qxb2 6. Nbd2 Na6 7. Nb3 Ne4 8. Qb1 Qxf2+ 9. Kd1 Nc3+ 10. Kc1 Nxb1 11. Nbd2 Nxd2 12. Nxd2 Qe1+ 13. Kc2 Qxa1 {0-1 (13) Sutherland,D-Taylor,B (1952) ICCF 2009}) 5. Qxd4 Nc6 6. Qd3 Qb6 7. b3 e5 8. Nxe5 Qa5+ 9. Nd2 Nxe5 10. Qf5 Nf3+ 11. gxf3 Qxf5 12. Bc7 d6 13. Bg2 Qg5 14. Bf1 Qc5 15. Bd8 Kxd8 {Fernandes,D-Adler,E ICCF 2013 0-1 (31)}) (4. h3 cxd4 (4... Qb6 5. Bc1 cxd4 6. Nxd4 (6. Qxd4 Bc5 7. Qh4 Nc6 8. c3 d5 9. Nbd2 Be7 10. Qa4 h6 11. e3 O-O 12. Be2 e5 13. O-O Be6 14. Re1 Bf5 15. Qb3 Qc7 16. Nf1 Be6 17. Qd1 Rac8 {Lindqvist,T (1848)-Laine,E (1926) ICCF 2013 0-1 (44)}) 6... e5 7. Nb3 d5 8. c3 Be6 9. Be3 Qc6 10. N1d2 Bd6 11. Bg5 Nbd7 12. e3 Qb6 13. Be2 O-O 14. O-O h6 15. Bxf6 Nxf6 16. Nf3 {Schönwetter, K (1848)-Narciso,M (2189) ICCF 2011 0-1 (26)}) 5. Qxd4 Nc6 6. Qd3 d5 7. Nbd2 Bd6 8. Bxd6 Qxd6 9. e3 Bd7 10. c3 O-O 11. Be2 e5 12. e4 Be6 13. Ng5 Rad8 14. Nxe6 Qxe6 15. Qe3 d4 {Schönwetter,K (1911)-Cowling,T (1998) ICCF 2009 1/2-1/2 (27)}) (4. dxc5 Bxc5 5. e3 O-O 6. Bd6 Bxd6 7. Qxd6 Ne4 8. Qa3 Nc6 9. Bd3 d5 10. O-O e5 11. Bxe4 dxe4 12. Nfd2 f5 13. Nc3 Be6 14. Rfd1 Qb6 15. Nb3 Nb4 { Swahnberg,L (2355)-Sánchez,M (2382) ICCF 2008 1/2-1/2}) 4... Nc6 (4... cxd4 5. exd4 (5. Nxd4 e5 6. Bxe5 Qa5+ 7. c3 Qxe5 {0-1 (7) Mironik,P-Zittel,M ICCF 2016} ) 5... b6 (5... Qb6 6. Qc1 (6. Nc3 Be7 (6... a6 7. Rb1 d5 8. Bd3 Bd6 9. Qd2 O-O 10. O-O Bxf4 11. Qxf4 Bd7 12. Rfe1 h6 13. h3 Rc8 14. a3 Bc6 15. Qe3 Nbd7 16. a4 {1/2-1/2 (16) Ugrinovskiy,G-Cloës,D ICCF 2014}) (6... Qxb2 7. Nb5 Nd5 8. Bd2 Na6 9. c4 Ndc7 10. Rb1 Qxa2 11. Be2 Nxb5 12. cxb5 Nc5 13. dxc5 Bxc5 14. O-O O-O 15. Rc1 Be7 16. Ra1 Qb2 17. Bf4 d6 18. Qd3 {Neuburger,E-Flor Trejo,R (2149) ICCF 2017 1-0 (45)}) 7. a3 O-O 8. h3 a6 9. Bd3 d6 10. O-O Bd7 11. Ne4 Nxe4 { 0-1 (11) Elias,H (2075)-Marrone,V (2103) ICCF 2011}) 6... Nc6 (6... Bd6 7. Bg5 Be7 8. Bd3 Nc6 9. c3 h6 10. Be3 Qc7 11. O-O b6 12. a4 Bb7 13. Na3 a6 14. Re1 Nd5 15. Bd2 f5 16. Bc4 Na7 17. Ne5 O-O 18. Bb3 {Borges,J (2302)-Kaupert,V (2244) ICCF 2016 0-1}) 7. c3 Nd5 (7... d5 8. Nbd2 Nh5 9. Be3 Bd6 10. Qc2 Qc7 11. Bd3 Nf4 12. Bxf4 Bxf4 13. g3 Bh6 14. O-O g6 15. Rfe1 O-O 16. Re2 f6 17. Qb3 Bd7 18. Rae1 Rad8 19. Kg2 {Kuhn,H (2302)-Bensiek,N (2360) ICCF 2008 0-1 (47)}) (7... Be7 8. Nbd2 d5 9. h3 Bd7 10. a4 Rc8 11. Bd3 Nb4 12. Bb1 Nc6 13. O-O O-O 14. Bc2 Nh5 15. Bh2 g6 16. Nb3 a5 17. Qe3 Qa7 18. g4 Nf6 19. Nc5 {Struzka,V (2059)-Ohera,D (1946) ICCF 2020 1-0 (30)}) (7... d6 8. Nbd2 Be7 9. Bd3 Nd5 10. Bg3 f5 11. O-O O-O 12. a4 Bd7 13. Nc4 Qc7 14. Re1 Rae8 15. Ne3 Nxe3 16. Qxe3 Bf6 17. Qe2 Kh8 18. Bc2 e5 19. dxe5 {Belanoff,S (1955)-Andrus,G ICCF 2010 1/ 2-1/2 (26)}) 8. Bg3 Be7 9. Bd3 (9. Nbd2 O-O 10. Nc4 Qd8 11. Bd3 f5 12. Ne3 Nb6 13. d5 Nxd5 14. Nxd5 exd5 15. O-O d6 16. Re1 g5 17. h3 f4 18. Bh2 Bf6 19. Qc2 Qc7 20. a4 Qf7 {Hermansen,R (1641)-Nordahl,N (2364) ICCF 2012 0-1 (60)}) 9... f5 (9... d6 10. O-O f5 11. Na3 O-O 12. Re1 Bd7 13. Qd2 Kh8 14. Nc4 Qc7 15. Ne3 Nxe3 16. Qxe3 Rae8 17. Rad1 Bf6 18. Bb5 a6 19. Ba4 b5 20. Bc2 Na5 21. Bd3 { Platero Manteca,J-Poletaev,V (2197) ICCF 2010 0-1 (57)}) 10. b4 O-O 11. Nbd2 Qd8 12. h3 a6 13. O-O d6 14. a4 Bd7 15. b5 axb5 16. axb5 Na5 17. c4 {Lagergren, H (2073)-Laine,E (1944) ICCF 2016 1/2-1/2 (75)}) (5... Nc6 6. Nbd2 (6. c3 d5 { 0-1 (6) Pereyra,D (1591)-Ginzbursky,L (2089) ICCF 2018} (6... Be7 7. Bd3 Nd5 ( 7... O-O 8. Nbd2 (8. O-O Nh5 9. Be3 Nf6 10. Nbd2 Nd5 11. Nc4 Nxe3 12. Nxe3 d5 13. Re1 Bd7 14. a3 Rc8 15. Qe2 a6 16. Rad1 Qc7 17. Bb1 g6 18. Ng4 {Jan,P (2197) -Wolczek,S (2169) ICCF 2010 1/2-1/2 (25)}) (8. h3 Nd5 9. Bh2 f5 10. c4 Qa5+ 11. Nbd2 Nf6 12. d5 exd5 13. O-O d6 14. Re1 Re8 15. cxd5 Nb4 16. Bf1 Qd8 17. Qb3 a5 18. a3 Na6 19. Rac1 Bf8 {Sesko,M (2228)-Pettersson,R ICCF 2012 1-0 (34)}) 8... Nd5 9. Bg3 f5 10. h3 Qe8 (10... f4 11. Bh2 a5 12. Qc2 g6 13. O-O b6 14. Rfe1 Bb7 15. a3 Ba6 16. c4 Nc7 17. d5 exd5 18. cxd5 {Sarkkinen,H (2129)-Laine,E (1894) ICCF 2007 1-0}) 11. Ne5 d6 12. Nxc6 Qxc6 13. Nf3 b5 14. O-O Bd7 15. Qe2 Rac8 16. Rfe1 Rfe8 17. Rad1 a5 18. Qd2 Qb6 19. Ng5 {Picken,R (1856)-Horton,J (2042) ICCF 2016 0-1 (48)}) (7... Nh5 8. Be3 b6 9. a4 O-O 10. Na3 Bb7 11. O-O Rc8 12. Nc4 Qc7 13. Nce5 Nxe5 14. Nxe5 Nf6 15. Qe2 d6 16. Ng4 Nxg4 17. Qxg4 f5 18. Qe2 f4 19. Bd2 {Mozelius,P (2262)-Filípek,J (2276) ICCF 2015 1/2-1/2 (32)} ) 8. Bc1 O-O 9. O-O b6 10. Re1 Bb7 11. a3 Bf6 12. Qc2 h6 13. Be4 Na5 14. Nbd2 Rc8 15. Nb3 Nc4 16. Bh7+ Kh8 17. Bd3 Qc7 18. Qe2 {Oats,A-Warzecha,H (2223) ICCF 2012 1/2-1/2 (26)}) (6... Ne7 7. Bd3 Ng6 8. Bg3 Nh5 9. Ne5 Nxg3 10. hxg3 Nxe5 11. dxe5 b5 12. Nd2 Bb7 13. Bxb5 Bxg2 14. Rh2 Rb8 15. Qa4 a6 16. Bxa6 Bc6 {Wilson,G (1894)-Tvrdon,P (1886) ICCF 2015 0-1 (34)}) (6... d6 7. h3 Be7 8. Bd3 b6 9. Nbd2 h6 10. Qe2 O-O 11. Ne4 Nh5 12. Bh2 Bb7 13. g4 Nf6 14. O-O-O Rc8 15. g5 hxg5 16. Kb1 Nxe4 17. Bxe4 Re8 18. h4 {Daatselaar,J (2164)-Glembek,B (2117) ICCF 2021 1-0 (27)})) (6. c4 Qb6 7. Nc3 Qxb2 8. Bd2 Qb6 9. Rb1 Qd8 10. d5 Na5 11. Bd3 Be7 12. O-O O-O 13. Ng5 h6 14. Nge4 d6 15. Nxf6+ Bxf6 16. Qa4 b6 17. Qd1 Nb7 {Kaytazki,L (1396)-Tsonev,B (1931) ICCF 2018 0-1 (47)}) (6. Be2 Qb6 7. Nc3 Qxb2 8. Nb5 Nd5 9. Bd2 a6 10. Rb1 Qxa2 11. Ra1 Qb2 12. c4 axb5 13. Rxa8 Nb6 14. Ra1 Nxc4 15. Bxc4 bxc4 16. Ra8 Kd8 17. O-O {Houston Smith,D (1917) -Schubert,S (2061) ICCF 2018 0-1 (39)}) 6... Nh5 (6... Be7 7. Be2 Nh5 8. Be3 O-O 9. O-O f5 (9... Nf6 10. c4 b6 11. a3 d5 12. Rc1 Bb7 13. Re1 Rc8 14. b4 dxc4 15. Nxc4 Nd5 16. Qd3 a6 17. Nce5 Nxe5 18. Nxe5 b5 19. Rxc8 Qxc8 20. Rc1 Qa8 21. Bf3 {Owens,J (1300)-Weiner,J (2111) ICCF 2011 1/2-1/2 (87)}) 10. Ne5 Nf6 11. c4 d6 12. Nd3 Bd7 13. Rc1 Qa5 14. f3 Rac8 15. Bf2 Rfe8 16. a3 Qc7 17. b4 e5 18. Nb3 {Lindqvist,T (2071)-Josefsson,K (2151) ICCF 2008 0-1 (35)}) 7. Be3 Nf6 8. c3 Ne7 9. Bf4 d6 10. Qb3 a6 11. a4 Nh5 12. Bg3 Qc7 13. Bc4 Nxg3 14. hxg3 d5 15. Bd3 g6 16. O-O Bg7 17. Rfe1 {Khairullin,R (2315)-Moegito,A (2252) ICCF 2020 1/ 2-1/2 (34)}) (5... Be7 6. Nbd2 (6. Bd3 O-O 7. c3 (7. O-O d6 8. c4 Nbd7 9. Nc3 a6 (9... b6 10. Nb5 Nb8 11. b4 a6 12. Nc3 a5 13. bxa5 Rxa5 14. Bd2 Bb7 15. Qe2 d5 16. cxd5 Nxd5 17. Qe4 g6 18. Nb5 Ra8 19. Bc4 Nc6 20. Qg4 Na5 21. Bd3 { Hjorth,J (1985)-Ferreira,L (1824) ICCF 2017 1-0 (46)}) 10. h3 b6 11. Qe2 { 1-0 (11) Gavrijski,D (2168)-Bas Fortuny,M (2162) ICCF 2015}) 7... Nh5 (7... Nd5 8. Bg3 f5 9. h3 a6 10. c4 Nb4 11. Be2 f4 12. Bh2 b5 13. a3 N4c6 14. d5 Na5 15. cxb5 axb5 16. Nc3 Nc4 17. O-O Nxb2 {Sesko,M (2228)-Flecher,J (2027) ICCF 2012 1-0 (43)}) 8. Be3 Qc7 9. Nbd2 Nc6 10. g3 b6 11. Qe2 f5 12. O-O g6 13. Bh6 Re8 14. Rae1 Bb7 15. Ne5 a6 16. a4 Nf6 17. f3 Nd8 {Kaytazki,L (1478)-Gavrilov,I (2305) ICCF 2020 1/2-1/2 (63)}) 6... O-O (6... Nh5 7. Be3 Nc6 8. c3 Nf6 9. Bd3 Qc7 10. Bg5 O-O 11. O-O b6 12. Re1 Bb7 13. Bh4 d5 14. Ne5 a6 15. Qf3 Rac8 16. Nxc6 Qxc6 17. Qh3 h6 18. Bg3 {Steiner,R (1778)-Hawkins,J (1927) ICCF 2014 1-0 (29)}) 7. Qe2 Nc6 8. O-O-O Nb4 9. Kb1 Qa5 10. a3 Nxc2 11. Kxc2 Qf5+ 12. Kb3 Qxf4 13. Ka2 Qb8 14. Ra1 a6 15. Kb1 b5 16. Kc1 Bb7 17. Kd1 {Pereyra,D (1584) -Kragten,J (2322) ICCF 2017 0-1}) 6. Be2 (6. h3 Be7 7. a4 O-O 8. c3 (8. Nbd2 d6 9. c3 Qc7 (9... Ba6 10. Bb5 Nd5 11. Bg3 Bxb5 12. axb5 Nc7 13. Qe2 Qd7 14. c4 a6 15. Ne4 axb5 16. Rxa8 Nxa8 17. cxb5 d5 18. Nc3 Bd6 19. Ne5 Qe7 20. O-O f6 21. Nd3 {Wunderlich,H (2583)-Tulfer,P (2522) ICCF 2020 1/2-1/2 (47)}) 10. Bh2 Bb7 11. Bd3 a6 12. Qe2 Nbd7 13. O-O Rfe8 14. a5 b5 15. c4 bxc4 16. Nxc4 Qb8 17. Rfc1 g6 18. Nfd2 Bf8 19. Nf1 e5 {Tauber,H (2516)-Percze,J (2508) ICCF 2019 1/ 2-1/2 (29)}) 8... Bb7 9. Na3 (9. Bd3 d6 10. O-O Nbd7 11. Re1 a6 12. Bg3 (12. Na3 Re8 13. Nc4 Qc7 14. Bg3 Nd5 15. Qb3 N7f6 16. Ncd2 Nh5 17. Bh2 a5 18. Rac1 Rec8 19. Qd1 Nhf4 20. Bf1 Ng6 21. Nb1 Qd7 22. Na3 Bc6 23. b3 Qd8 {Esposito,L (2452)-Ruggeri Laderchi,G (2438) ICCF 2018 1/2-1/2}) 12... Re8 13. Na3 Bf8 14. Nc2 Qc7 15. Be2 g6 16. Nd2 e5 17. Ne3 Rac8 18. Qb3 Bh6 19. Rad1 Bg5 20. Bc4 Re7 {Romm,M (2463)-Salzmann,S (2380) ICCF 2019 1-0 (54)}) 9... Be4 10. Nc4 d5 11. Ncd2 Bf5 12. g4 Be4 13. g5 Bxf3 14. Qxf3 Ne8 15. h4 Nc6 16. Qh3 Bd6 17. Be3 f5 {Koshmak,I (2461)-Scherbov,G (2351) ICCF 2019 1-0 (51)}) (6. Bd3 Be7 (6... Ba6 7. O-O Bxd3 8. Qxd3 Nc6 9. Nc3 Nb4 10. Qe2 Be7 11. a3 Nbd5 12. Nxd5 Nxd5 13. Bd2 Nf6 {1/2-1/2 (13) Palm,W (2318)-Keskowski,T (2374) ICCF 2012}) 7. O-O (7. h3 Ba6 8. O-O O-O 9. c3 (9. Bxa6 Nxa6 10. Qe2 Nb8 11. c3 Nc6 12. Nbd2 Rc8 13. Ne5 d6 14. Nxc6 Rxc6 15. Rad1 Qd7 16. Rfe1 {1/2-1/2 (16) Artamonov,R (1940) -Lindegaard,P (2025) ICCF 2019}) 9... Bxd3 10. Qxd3 Nc6 11. Nbd2 d5 12. Ne5 Nxe5 13. Bxe5 Ne8 14. Rfe1 Nd6 15. b3 Rc8 16. c4 Nf5 17. Nf3 Qd7 18. Red1 Rfd8 {Reis,L (2454)-Granski,M (2462) ICCF 2008 0-1 (76)}) 7... O-O (7... Bb7 8. Nc3 a6 (8... O-O 9. Qe2 d6 10. Rfe1 a6 11. h3 Nc6 12. a3 b5 13. a4 b4 14. Ne4 Na5 15. Nxf6+ Bxf6 16. c3 g6 17. Rab1 Qd7 18. Qe3 Bg7 19. cxb4 Nc6 20. Qd2 { Reinstadler,B (2158)-Zsifkovits,R (2226) ICCF 2013 1/2-1/2 (26)}) 9. Re1 O-O 10. Bg5 (10. Qe2 b5 11. Ne4 Nd5 12. Bg3 Qb6 13. c3 h6 14. h3 f5 15. Ned2 Bd6 16. Ne5 Bxe5 17. dxe5 Nc6 18. a4 Nce7 19. axb5 axb5 20. Rxa8 Rxa8 21. Nb3 Ng6 { Zelovic,V (2155)-Kucinskas,S (2239) ICCF 2005 1/2-1/2 (48)}) 10... d6 11. Bxf6 Bxf6 12. Ne4 Be7 13. c4 Nd7 14. Nc3 Nf6 15. d5 e5 16. a4 a5 17. Ng5 g6 18. Qd2 Nd7 19. f4 {Hjorth,J (2027)-Freeman,M (2220) ICCF 2017 0-1 (38)}) 8. a4 (8. c3 Bb7 9. Nbd2 d6 10. Re1 h6 (10... Nbd7 11. h3 Re8 12. Ne4 Nxe4 13. Bxe4 Bxe4 14. Rxe4 Nf6 15. Re1 Qc7 16. a4 h6 17. Rc1 {1/2-1/2 (17) Gérard,A (1866)-Sobry,S (2092) ICCF 2011}) 11. h3 Nc6 12. Rc1 Rc8 13. Ne4 Re8 14. Qe2 Na5 15. Nfd2 Nxe4 16. Nxe4 d5 17. Nd2 Bd6 18. Bxd6 Qxd6 19. Nf3 Qc7 {Gérard,A (1976)-Olano Aizpurua,J (2204) ICCF 2015 1/2-1/2 (27)}) (8. Qe2 Nd5 (8... Bb7 9. c4 Nc6 10. Nc3 d5 11. Rfd1 Nb4 12. Rac1 Nxd3 13. Qxd3 dxc4 14. Qxc4 Rc8 15. Qe2 Nd5 16. Bg3 Nxc3 17. bxc3 {Mataix Arbona,C (1892)-Lindegaard,P (1878) ICCF 2017 0-1 (27)}) 9. Bg3 Bb7 10. c3 Nc6 11. Nbd2 f5 12. h3 Rc8 13. Rfe1 Nc7 14. Rad1 f4 15. Bh2 Qe8 16. Ne5 d6 17. Nxc6 Bxc6 18. Qg4 Bd7 19. c4 b5 {Nielsen,P (1875) -Lindegaard,P (1855) ICCF 2015 1/2-1/2 (28)}) 8... Ba6 (8... Nh5 9. Be3 Nf6 10. Na3 Ba6 11. Nb5 Bb7 12. Bf4 d6 13. Re1 a6 14. Na3 Nbd7 15. h3 Nd5 16. Bd2 Rc8 17. c3 Re8 18. a5 b5 19. c4 bxc4 20. Bxc4 {Langer,R (2451)-Serner,A (2415) ICCF 2021 1/2-1/2 (41)}) 9. Bb5 d6 10. h3 Qc7 11. Qe2 Bb7 12. Bh2 Nbd7 13. c3 a6 14. Bd3 Rfe8 15. Nbd2 Nd5 16. Nc4 Bf8 17. Rfe1 N7f6 {Broniek,M (2474)-Dimov, D (2461) ICCF 2019 1/2-1/2 (28)}) (6. Nbd2 Be7 (6... Bb7 7. Bd3 d6 (7... Nh5 8. Bg5 Be7 9. Bxe7 Qxe7 10. O-O Nf4 11. Bc4 g5 12. Ne1 h5 13. c3 h4 14. Be2 Nc6 15. Nd3 Nxe2+ 16. Qxe2 h3 17. g3 f5 18. d5 {Norman,N (2047)-Haak,G (2175) ICCF 2010 1/2-1/2 (55)}) 8. Bg5 Be7 9. Bb5+ Nbd7 10. O-O O-O 11. Re1 a6 12. Bd3 Nd5 13. Bxe7 Qxe7 14. c3 N7f6 15. Qc2 Nf4 16. Bc4 d5 17. Bb3 Ne4 18. Nxe4 { Strelecky,R (1543)-Zarges,R (2184) ICCF 2019 0-1 (33)}) 7. h3 O-O 8. c3 (8. Bd3 Ba6 9. Bxa6 Nxa6 10. O-O b5 11. c3 Nc7 12. a4 Ncd5 13. Bh2 a6 14. Qb3 Qb6 15. Ra2 d6 16. Rfa1 Rab8 17. axb5 axb5 18. Ra6 Qd8 19. Ra7 Nc7 {Lyons,B-Benson,K ICCF 2017 1/2-1/2 (28)}) 8... Ba6 (8... d6 9. Bh2 Bb7 10. Be2 Qc7 11. O-O Nbd7 12. Re1 Rfc8 13. Qb3 a6 14. a4 Bc6 15. c4 Qd8 16. d5 Nc5 17. Qe3 exd5 {Houston Smith,D (1710)-Lindegaard,P (1855) ICCF 2015 1-0 (32)}) 9. Bxa6 Nxa6 10. Qe2 ( 10. O-O d6 11. a4 Qd7 12. Qe2 Qb7 13. Ne1 Rac8 14. g4 Nb8 15. Nd3 Nc6 16. Bh2 Rfe8 17. Rfe1 Bf8 18. g5 Nd7 19. Qg4 Rcd8 20. b4 Rc8 {1/2-1/2 (20) Wanders,M (2186)-Kersten,U (2255) ICCF 2017}) 10... Nc7 11. O-O Rc8 12. Rfe1 h6 13. Bh2 Re8 14. Nf1 d6 15. Ne3 Ncd5 16. Nxd5 Nxd5 17. Rac1 Qd7 {Borroni,E (2393) -Ruggeri Laderchi,G (2442) ICCF 2019 1/2-1/2 (43)}) (6. Nc3 Bb4 (6... Bb7 7. a3 Be7 8. Bd3 Nc6 9. O-O O-O 10. h3 d5 (10... Rc8 11. Re1 d5 12. Ne2 Ne4 13. c3 Bd6 14. Qc2 Ne7 15. Bxd6 Qxd6 16. a4 Nf5 17. a5 Qc7 18. Ra2 Nfd6 19. axb6 axb6 20. Rea1 Ra8 21. Rxa8 Rxa8 22. Rxa8+ {Mulder,J (2133)-Tellier,B (2070) ICCF 2013 1-0 (39)}) 11. Qd2 Na5 12. b3 a6 13. Rfe1 Rc8 14. Ne5 Nc6 15. Nxc6 Rxc6 16. Na4 Nh5 17. Be3 Nf6 {Brotherton,T (2108)-Hjorth,J (2120) ICCF 2013 0-1 (41) }) 7. Bd3 Bb7 8. O-O O-O 9. Qe2 Nc6 10. h3 Bxc3 11. bxc3 d6 12. Rae1 Rc8 13. Bg5 h6 14. Bh4 Rc7 15. Qd2 Kh8 16. Nh2 g5 17. Bg3 Rg8 {Grabarchuk,N (2134) -Shabaev,V (2180) ICCF 2012 1-0 (38)}) (6. c3 Nc6 7. Bd3 Nd5 8. Bg3 Be7 9. O-O Nf6 10. h3 O-O 11. Qe2 d5 12. Nbd2 Bb7 13. Rad1 Nh5 14. Bh2 h6 15. Ne5 Nf6 16. f4 Bd6 17. Bg3 Rc8 {Lund,S (1340)-Schober,A ICCF 2019 1-0 (47)}) 6... Bb7 7. O-O Be7 8. Nc3 O-O 9. Bd3 (9. Re1 a6 10. Qd2 d6 11. Rad1 b5 12. a3 Nbd7 13. Qd3 Rc8 14. Nd2 Nb6 15. Qg3 Kh8 16. Bd3 Nc4 17. Nxc4 bxc4 18. Be2 Qb6 19. Qe3 Nd5 20. Nxd5 Bxd5 {Raby,E (2023)-Mason,I (2220) ICCF 2014 1/2-1/2 (54)}) 9... d6 10. Re1 a6 11. Qe2 Nc6 12. a3 b5 13. Ne4 Re8 14. Nxf6+ Bxf6 15. Rad1 Qc7 16. c3 {Gardner,A-Mason,I (2168) ICCF 2008 1/2-1/2 (33)}) (4... Be7 5. Bd3 (5. dxc5 Bxc5 (5... Qa5+ 6. Nc3 Ne4 (6... Nd5 7. Be5 f6 8. Bd4 Nxc3 9. Bxc3 Qxc5 10. Bd3 b6 11. O-O Bb7 12. Nd2 O-O 13. Qg4 Na6 14. Rfd1 Qc7 15. Qh4 g6 16. Nb3 Nc5 { Steiner,R (1845)-Kolkman,C (1845) ICCF 2015 1/2-1/2 (26)}) 7. Be5 f6 8. Bd4 Nc6 9. a3 Nxc3 10. Bxc3 Qxc5 11. Bd3 d5 12. e4 dxe4 13. Bxe4 O-O 14. O-O Rd8 15. Qb1 g6 16. Qe1 a5 17. b4 {McNabb,M-Vliet,E (2236) ICCF 2019 1/2-1/2 (56)}) 6. a3 (6. Nc3 a6 7. Bd6 Bxd6 8. Qxd6 Qe7 9. Qg3 O-O 10. Bd3 Nc6 11. O-O-O d5 12. Qh4 Qb4 13. Qxb4 Nxb4 14. Be2 Nc6 15. Rhg1 b5 16. a3 Bb7 17. Nd4 Rac8 {Deans,M (2221)-Burridge,R (2118) ICCF 2016 1/2-1/2 (34)}) (6. Be2 d5 7. c4 O-O 8. O-O Nbd7 9. Nc3 dxc4 10. Bxc4 a6 11. Bd3 b5 12. a4 b4 13. Ne4 Bb7 14. Nxf6+ Nxf6 15. Qe2 a5 16. Rfd1 Qe7 17. Nd2 Rfd8 {Arnold,E (2076)-Bragesjö,T (2081) ICCF 2019 1/2-1/2}) 6... O-O 7. c4 d5 (7... Be7 8. Nc3 d6 9. Be2 Nh5 10. O-O Nxf4 11. exf4 Nd7 12. Qd3 Nc5 13. Qc2 a5 14. b4 Na6 15. Qd2 Bd7 16. Rab1 axb4 17. axb4 Qc7 18. Rfd1 d5 19. b5 {Nicholls,M (2060)-Sorokin,M ICCF 2013 1-0 (54)}) 8. Qc2 Nc6 9. cxd5 Qa5+ 10. Nbd2 Nxd5 11. Bg3 Re8 12. Bd3 Nf6 13. O-O Bf8 14. b4 Qh5 15. Be2 Rd8 16. Rac1 Bd7 {Belanoff,S (1955)-Sylvester,G ICCF 2010 1-0}) (5. Nbd2 Nh5 6. Bxb8 (6. Bg3 Nxg3 7. hxg3 d6 8. c3 Nd7 9. Bd3 h6 10. Qe2 Qc7 11. g4 b6 12. g5 Bb7 13. O-O-O O-O-O 14. gxh6 Rxh6 15. Rxh6 gxh6 16. Ba6 { Bieker,P (1989)-Klein,M (1948) ICCF 2013 1/2-1/2}) 6... Rxb8 7. dxc5 Qa5 8. c3 Qxc5 9. Ne4 Qc7 10. Nd4 Qe5 11. Bd3 {1/2-1/2 (11) Taras,I (2278)-Bredenhof,B (2175) ICCF 2007}) (5. Be2 Nh5 6. Bxb8 Rxb8 7. c4 O-O 8. O-O b6 9. d5 Qc7 10. Nc3 a6 11. Ne4 d6 12. Nc3 Nf6 13. dxe6 fxe6 14. Qc2 Qc6 15. Bd3 Qe8 16. a4 Qh5 {Thompson,B (2251)-Zavrazhnov,A ICCF 2013 0-1 (28)}) (5. h3 O-O 6. dxc5 Qa5+ 7. Nbd2 Qxc5 8. Nb3 Qb6 9. Bd3 d6 10. e4 Bd7 11. O-O Nc6 12. c3 a5 13. Qc2 Rfc8 14. a3 Qc7 15. Nbd2 b5 16. Bxb5 Nb4 {Gardner,A-Brotherton,T (1757) ICCF 2008 1/ 2-1/2 (45)}) 5... Nh5 6. Bxb8 Rxb8 7. Nbd2 (7. c3 Nf6 8. Nbd2 b6 9. O-O Bb7 10. Re1 O-O 11. e4 d6 12. Qe2 Qc7 13. Rad1 Nd7 14. e5 cxd4 15. exd6 Qxd6 16. Nxd4 Nc5 17. Bc2 Bf6 18. N2f3 Rbd8 {Stuart,P-Evans,S ICCF 2008 1-0 (28)}) 7... cxd4 8. Nxd4 Nf6 9. Qf3 O-O 10. g4 b6 11. Qg3 Bb7 12. Rg1 Rc8 13. g5 Nh5 14. Qg4 g6 15. f4 Ng7 16. c3 {MacMillen,A (1817)-Nutt,J ICCF 2012 0-1 (37)}) (4... Nd5 5. Bg3 Qb6 6. Nbd2 Qxb2 7. Rb1 Qa3 8. Rb3 Qa5 9. dxc5 Nc6 10. Bd3 Qxa2 11. O-O Nf6 12. Nc4 Bxc5 13. Nd4 d5 14. Nd6+ Bxd6 15. Bxd6 Nxd4 16. exd4 {Oppermann,P (2289)-Rutkus,R (2164) ICCF 2014 1-0 (25)}) (4... Nh5 5. Bg3 cxd4 6. Nxd4 Nxg3 7. hxg3 Qb6 8. b3 g6 9. Nd2 Nc6 10. Nxc6 bxc6 11. Nc4 Bb4+ 12. Ke2 Ba6 13. Qd3 Qc7 14. a3 Be7 15. Nd6+ Qxd6 16. Qxa6 {Gérard,A (1741)-Rossi,F (2088) ICCF 2020 0-1}) (4... h6 5. h3 Be7 6. dxc5 Bxc5 7. a3 Nc6 8. c4 Ne4 9. Bd3 Nf6 10. Qc2 b6 11. Nc3 a5 12. Rd1 Bb7 13. O-O O-O 14. Na4 Be7 15. e4 d6 16. e5 { Gil Zepeda,C-Estrada Gordillo,A ICCF 2019 0-1 (30)}) (4... Qb6 5. Na3 (5. Nc3 a6 (5... Nc6 6. Rb1 (6. Nb5 Nd5 7. dxc5 Bxc5 8. Bd6 a6 9. Bxc5 Qxc5 10. c4 axb5 11. cxd5 exd5 12. a3 b4 13. a4 O-O 14. Rc1 Qd6 15. Bb5 b6 16. Qd3 Bb7 17. O-O Na7 {Burghoff,M (2573)-Drake Díez de Rivera,P (2555) ICCF 2007 1/2-1/2}) (6. Nd2 cxd4 7. Nc4 Qd8 8. exd4 (8. Nb5 Nd5 9. Qf3 Bb4+ 10. c3 dxc3 11. bxc3 Nxc3 12. Nc7+ Kf8 13. a3 Nd5+ 14. axb4 Nxc7 15. Bd6+ Kg8 16. Be2 Ne8 17. Rd1 Nxd6 18. Nxd6 f6 19. O-O Nxb4 {Reinstadler,B (2212)-Pekand,B (2203) ICCF 2015 1-0 (28)}) 8... d5 9. Nb5 dxc4 10. Nc7+ Kd7 11. Nxa8 Qa5+ (11... Bd6 12. Bxd6 Qa5+ 13. c3 Kxd6 14. Bxc4 Bd7 15. O-O Rxa8 {0-1 (15) Vieito Ribelles,A (1819) -Shchebenyuk,N (2143) ICCF 2014}) 12. c3 Nd5 13. Bd2 b5 14. a4 Bb7 15. b4 Ncxb4 16. Be2 Bxa8 17. cxb4 Bxb4 {Lindberg,W (1755)-Kaltschmidt,A (1887) ICCF 2015 1/ 2-1/2 (50)}) 6... Be7 7. Bd3 (7. Be2 O-O 8. O-O d6 9. Re1 Bd7 10. a3 Rac8 11. dxc5 Qxc5 12. Bg5 Qb6 13. h3 Rfd8 14. Qd2 Ne5 15. Qd4 Qxd4 16. exd4 Nxf3+ 17. Bxf3 Bc6 18. Be2 h6 {Sztykiel,Z (2118)-Sikorsky,R (2248) ICCF 2007 1/2-1/2 (35) }) 7... cxd4 8. exd4 Nxd4 9. O-O Nxf3+ 10. Qxf3 Qc6 11. Qe3 a6 12. Rbd1 b5 13. Rfe1 Bb7 14. Qh3 h6 15. Ne2 Rc8 16. c3 b4 17. cxb4 {Arteaga Hernández,L (1726) -Veselinov,R (2077) ICCF 2014 1/2-1/2 (71)}) (5... cxd4 6. Qxd4 (6. exd4 Be7 7. Nb5 (7. Rb1 O-O 8. Be2 Nc6 9. O-O d5 10. h3 a6 11. a3 Ne4 12. Na4 Qd8 13. c4 dxc4 14. Bxc4 Bd6 15. Be3 Nf6 16. Bd3 Nd5 17. Rc1 Nxe3 18. fxe3 Ne7 {Jan,P (2197)-Izing,S (2271) ICCF 2010 0-1 (52)}) 7... Nd5 8. Bd2 a6 9. c4 axb5 10. cxd5 exd5 11. Qb3 O-O 12. Bxb5 Nc6 13. O-O d6 14. a4 Be6 15. Qd3 Bf6 16. Bg5 Bxg5 17. Nxg5 g6 {Gardner,A (2132)-Clark,S (2056) ICCF 2017 1-0 (34)}) 6... Qxd4 7. exd4 Bb4 8. Bd3 Nd5 9. Bd2 Nxc3 10. Bxc3 Bxc3+ 11. bxc3 d6 12. a4 Bd7 13. c4 Bc6 14. Ke2 Nd7 15. Ke3 Ke7 16. Be4 Bxe4 17. Kxe4 {Daudish,J-Young III, W ICCF 2007 0-1 (42)}) (5... Be7 6. dxc5 Bxc5 7. Na4 Qb4+ 8. c3 Qa5 9. b4 Bxb4 10. cxb4 Qxb4+ 11. Nd2 O-O 12. Rb1 Qa5 13. Bd6 Re8 14. Rb5 Qd8 15. Bd3 b6 16. Qf3 Nc6 17. Rg5 {Matveenko,B (2268)-Kaytazki,L (1519) ICCF 2009 1-0 (29)}) ( 5... Na6 6. a3 Be7 7. Ne5 O-O 8. Bb5 cxd4 9. exd4 d6 10. Nc4 Qd8 11. Ne3 Bd7 12. Bxd7 Qxd7 13. O-O Nc7 14. Ne2 Ne4 15. h3 d5 16. Ng3 Bd6 17. Bxd6 {Nurmi,R (1651)-Dedrick,R ICCF 2012 1-0 (38)}) 6. a3 (6. dxc5 Bxc5 (6... Qxc5 7. Be2 Nh5 8. Bxb8 Rxb8 9. O-O Nf6 10. a3 b5 11. Qd4 Qxd4 12. exd4 Bb7 13. Nd2 Be7 14. f4 Rc8 15. Bf3 d5 16. Rac1 Bxa3 17. Nxb5 Bxb2 18. Nd6+ {Swahnberg,L (2192) -Grodzensky,Y (2147) ICCF 2009 0-1 (27)}) 7. Rb1 (7. a3 d5 8. Bd3 Bd6 9. Bxd6 Qxd6 10. e4 Nc6 11. exd5 exd5 12. O-O O-O 13. Re1 Bg4 14. h3 Bxf3 15. Qxf3 Rfe8 16. Bf1 Re6 17. Rad1 Rxe1 18. Rxe1 h6 {Steenlandt,A (1659)-Viitala,A (2101) ICCF 2017 1/2-1/2 (39)}) (7. Qd2 Bb4 (7... Qxb2 8. Rb1 Qa3 9. Rb3 Qa5 10. Ne4 Qxd2+ 11. Nfxd2 Nxe4 12. Nxe4 Be7 13. Nd6+ Bxd6 14. Bxd6 b5 15. Be2 Nc6 16. O-O f6 17. Rd1 {Golubenko,A (2205)-Ovcharenko,L (2294) ICCF 2017 1/2-1/2 (31)}) 8. Bd3 d6 9. a3 Qa5 10. O-O Bxc3 11. Qxc3 Qxc3 12. bxc3 e5 13. Bg5 Nbd7 14. Nd2 h6 15. Bh4 g5 16. Bg3 Nh5 17. Rab1 Ke7 18. c4 Nc5 {Ghisi,S (1916)-Coyne,D (2274) ICCF 2013 0-1 (55)}) 7... O-O 8. Bd3 Nc6 9. Nd2 Be7 10. Bd6 Qd8 11. Nc4 b5 12. Bxe7 Qxe7 13. Nd6 Ne8 14. Nxe8 Rxe8 15. Qh5 f5 16. O-O Bb7 17. a3 Ne5 {Løvås, R (1875)-Sjøl,H (2311) ICCF 2010 0-1 (35)}) (6. Rb1 cxd4 (6... d6 7. Be2 Be7 8. O-O O-O 9. Bg5 h6 10. Bh4 Nc6 11. d5 Nxd5 12. Nxd5 exd5 13. Bxe7 Nxe7 14. Nh4 Qa5 15. Ra1 Qb4 {0-1 (15) Miller,S-Price,D (2001) ICCF 2009}) 7. exd4 Be7 8. a3 O-O 9. Bd3 d6 10. O-O Bd7 11. Re1 Bc6 12. Ng5 Re8 13. Bc4 d5 14. Bd3 Nbd7 15. h3 Rac8 16. Qd2 h6 17. Nf3 Bf8 {Gil Zepeda,C-Satskov,V ICCF 2019 1/2-1/2 (30)}) (6. Be2 cxd4 7. Qxd4 Qxb2 8. Nd5 Qxd4 9. Nc7+ Kd8 10. exd4 Ra7 11. Nxe6+ fxe6 12. Bxb8 Ra8 13. Bf4 Bb4+ 14. Bd2 Bxd2+ 15. Nxd2 b5 16. O-O Bb7 17. Rfe1 Ke7 {Moujan,P (1910)-Rogers,B (2056) ICCF 2018 1/2-1/2 (41)}) 6... d5 (6... cxd4 7. exd4 d5 (7... d6 8. Bd3 (8. Be2 Bd7 (8... Be7 9. O-O O-O 10. Na4 Qc7 11. c4 Nc6 12. Nc3 h6 13. Rc1 Re8 14. c5 Nh5 15. Bxd6 Bxd6 16. cxd6 Qxd6 17. Ne4 Qd5 18. Nc5 Nf4 19. Bc4 Qf5 20. Re1 {Oliveira,M-Roos,J (2406) ICCF 2008 1/ 2-1/2}) 9. Rb1 Bc6 10. O-O Be7 11. Re1 O-O 12. Qd3 Nbd7 13. Nd2 Rfd8 14. b4 Qc7 15. b5 axb5 16. Nxb5 Bxb5 17. Rxb5 Nd5 18. Bg3 Nc3 19. Rb3 Nxe2+ {Caldwell,J (2281)-Ward,R (2415) ICCF 2006 1/2-1/2 (59)}) 8... Bd7 9. O-O Bc6 10. Be3 d5 11. Ne5 Bd6 12. f4 Nbd7 13. Qd2 O-O 14. f5 Nxe5 15. dxe5 d4 16. Na4 Bxa4 17. Bf4 Be7 18. exf6 Bxf6 19. fxe6 {Humphrey,C-Young III,W (1976) ICCF 2008 1/2-1/ 2 (38)}) (7... Be7 8. Bd3 (8. Be2 O-O 9. O-O d5 10. h3 Bd7 11. Qd2 Rc8 12. Rab1 Bc6 13. Qe3 Nbd7 14. Bd3 Bd8 15. a4 Bc7 16. b3 Bxf4 17. Qxf4 Qa5 18. Qe3 Qc7 19. Rfe1 b6 {Cottegnie,F (2368)-Salvador Marques,C (2358) ICCF 2014 1/2-1/2 (68)}) 8... Nc6 9. Na4 (9. Be2 d5 10. O-O O-O 11. Qd3 Ne8 12. Rfe1 Nd6 13. Na4 Qd8 14. h3 Na5 15. b3 Bd7 16. Nc5 Bb5 17. Qd2 b6 18. Nd3 Ne4 19. Qe3 Rc8 20. Rec1 Rc3 {Sodomski,A (2006)-Isigkeit,H (2371) ICCF 2011 0-1 (34)}) 9... Qd8 10. c4 b5 11. Nc3 bxc4 12. Bxc4 d5 13. Bd3 Bd6 14. Bg3 O-O 15. O-O Bxg3 16. hxg3 a5 17. Rc1 Ba6 18. Bxa6 Rxa6 19. Qe2 {Palm,W (2318)-Kloster,S (2273) ICCF 2012 1/ 2-1/2 (33)}) 8. Bd3 (8. h3 Bd7 9. Rb1 Nc6 10. Be2 Ne7 11. O-O Ng6 12. Bg3 Nh5 13. Bh2 Bd6 14. Bxd6 Qxd6 15. Re1 Rd8 16. Bd3 Nhf4 17. Bf1 O-O 18. h4 Ne7 19. g3 Nfg6 {Turaga,M (2270)-Hegde,R ICCF 2017 1/2-1/2 (37)}) (8. Be2 Bd7 9. Rb1 Nh5 10. Be3 Bd6 11. Ne5 Nf6 12. Bd3 Qc7 13. O-O Bxe5 14. dxe5 Qxe5 15. Re1 Bc6 16. Qc1 Qd6 17. Bd4 Nbd7 18. Qg5 O-O 19. f4 h6 {Gardner,A (2142)-Akrill,R (2104) ICCF 2016 1/2-1/2 (46)}) 8... Nc6 (8... Bd6 9. Na4 (9. Bxd6 Qxd6 10. O-O Nc6 11. Qd2 Bd7 12. Rfe1 Rc8 13. Qg5 O-O 14. Qh4 h6 15. Re3 Be8 16. Rae1 Ne7 17. Ne5 Qb6 18. Rg3 Kh8 19. Rf3 Nfg8 20. Nd1 f6 {Bandl,W (2024)-Iacomi,S (2089) ICCF 2014 0-1 (27)}) 9... Qa5+ 10. b4 Qc7 11. Bxd6 Qxd6 12. Qe2 O-O 13. Ne5 Bd7 14. Nc5 b6 15. Nxa6 Nxa6 16. Bxa6 Bc8 17. Bd3 Rxa3 18. Rb1 Ra4 19. c3 Bb7 20. O-O {Palm,W (2318)-Morrow,W (2296) ICCF 2012 1/2-1/2 (32)}) (8... Bd7 9. O-O Qxb2 10. Qd2 Qb6 11. Rfb1 Qa7 12. a4 Nc6 13. a5 Be7 14. Ne2 O-O 15. Ng3 Bd8 16. h4 Re8 17. c3 {Busemann,S (2581)-Pessoa,F (2517) ICCF 2020 1/2-1/2 (60)}) 9. O-O Bd7 (9... Be7 10. Na4 Qd8 11. c3 b6 12. h3 Bb7 13. Re1 Na5 14. Ne5 O-O 15. Bg5 Rc8 16. Ng4 Nd7 17. Bxe7 Qxe7 18. Qc2 g6 19. Ne5 Nxe5 20. Rxe5 Qd8 21. Ree1 {Brotherton,T (2108)-Coyne,D (2274) ICCF 2013 0-1 (60)}) 10. Ne2 (10. Re1 Be7 11. Na4 Qa5 12. b3 O-O 13. Qd2 Qxd2 14. Bxd2 Bd6 15. Nb6 Rad8 16. Nxd7 Rxd7 17. g3 Rc8 18. Kg2 h6 19. h3 Kf8 20. Re2 a5 21. Ree1 Rdd8 {Trana,A (2357)-Kalchev, J (2498) ICCF 2005 1/2-1/2 (43)}) 10... Be7 11. b3 O-O 12. c4 dxc4 13. bxc4 Qd8 14. Nc3 Qa5 15. Qc2 b5 16. c5 h6 17. Rfd1 Ra7 18. Qd2 {Fleetwood,D (2583) -Dunlop,G (2535) ICCF 2018 1/2-1/2 (72)}) (6... Nc6 7. Be2 (7. h3 cxd4 8. exd4 d6 (8... d5 9. Be2 Be7 10. O-O O-O 11. b4 Ne4 12. Na4 Qd8 13. Rc1 Bd6 14. Bxd6 Nxd6 15. Re1 Bd7 16. Nc5 b6 17. Nxd7 Qxd7 18. c3 Rfc8 19. Bd3 Ne7 20. Ne5 { Chan,D (2210)-Fernández,J (2336) ICCF 2012 0-1 (78)}) 9. Bd3 Bd7 10. Na4 Qa7 11. c4 b5 12. cxb5 axb5 13. Nc3 Nxd4 14. Nxd4 Qxd4 15. Be3 Qe5 16. O-O Be7 17. Rc1 O-O 18. Re1 Rfc8 {Senzacqua,F (2119)-Lanzani,P (2126) ICCF 2013 1/2-1/2}) 7... Nh5 (7... Be7 8. O-O cxd4 9. exd4 d5 (9... O-O 10. Na4 Qa5 11. c4 b5 12. Bd2 Qc7 13. cxb5 axb5 14. Bxb5 {Geluk,P (2048)-Vlietstra,M ICCF 2013 1-0 (50)}) 10. Qd3 O-O 11. Rfd1 Bd7 12. h3 Na5 13. Ne5 Rfc8 14. Rab1 Be8 15. Qg3 Nc6 16. Be3 Qd8 17. Bd3 b5 18. Re1 b4 19. Nxc6 {Fernández,J (2336)-Stratta,R (2334) ICCF 2012 1/2-1/2 (34)}) 8. dxc5 (8. Bg5 h6 9. dxc5 Bxc5 10. Na4 Qa5+ 11. c3 Bf8 12. b4 Qc7 13. Bh4 g5 14. Nd4 gxh4 15. Bxh5 Ne5 16. f4 Nc4 17. Qe2 d5 18. e4 dxe4 19. Qxe4 Be7 {Welti,M (2077)-Jenal,J (2412) ICCF 2009 0-1 (37)}) 8... Bxc5 9. Na4 Qa5+ 10. c3 Nxf4 11. b4 Nxg2+ 12. Kf1 Qd8 13. bxc5 Nh4 14. Nb6 Rb8 15. Nxh4 Qxh4 16. Qd6 Qh3+ 17. Ke1 Qg2 18. Rf1 {Barber,P (2266)-Murray,J (1996) ICCF 2014 1-0 (50)}) 7. Be2 Bd7 8. O-O (8. Rb1 Be7 9. O-O O-O 10. Ne5 Rc8 11. g4 Be8 12. Re1 Qd8 13. g5 Nfd7 14. Nf3 Nc6 15. h4 Nf8 16. Qd2 cxd4 17. exd4 f6 18. Rbd1 b5 19. Kh2 Na5 {Fernández,J (2218)-Askelöf,P (2188) ICCF 2011 1/2-1/ 2 (40)}) 8... cxd4 9. Qxd4 Qxd4 10. Nxd4 Be7 11. Rad1 (11. Rfd1 Nc6 12. Nb3 Rc8 13. h3 Rg8 14. Rd2 g5 15. Bg3 h5 16. Rad1 Nd8 17. Be5 g4 18. hxg4 Nxg4 19. Bxg4 Rxg4 20. e4 f6 21. f3 Rg7 22. Bh2 Bxa3 {Belanoff,S (1941)-Sage,F (2353) ICCF 2010 1/2-1/2 (30)}) 11... O-O 12. g4 h6 13. h4 Nc6 14. Nb3 Rac8 15. Kg2 e5 16. g5 exf4 {Cottegnie,F (2368)-Nørrelykke,S (2331) ICCF 2014 1/2-1/2 (69)}) (5. Qc1 Nc6 (5... cxd4 6. exd4 Nc6 7. c3 d5 8. Nbd2 Be7 9. Bd3 O-O 10. Qc2 Bd7 11. a3 Nh5 12. Bxh7+ Kh8 13. Bg3 g6 14. Bxg6 fxg6 15. Qxg6 Be8 16. Qh6+ Kg8 17. Ng5 {Anonymous,P (1908)-Kruk,S (2110) ICCF 2009 0-1 (29)}) (5... d5 6. c3 Bd6 7. Bxd6 Qxd6 8. Bd3 Nbd7 9. Nbd2 O-O 10. O-O e5 11. dxe5 Nxe5 12. Nxe5 Qxe5 13. Nf3 Qe7 14. h3 Rd8 15. Rd1 b6 16. Qc2 Bb7 17. Qe2 {Nicotera,A (2133)-Holloway, J ICCF 2013 0-1 (53)}) 6. c3 (6. Bc4 cxd4 {0-1 (6) Pereyra,D (1591)-Narciso,M (2208) ICCF 2018}) 6... Nh5 7. Bg3 (7. Bg5 h6 8. Bh4 d5 (8... g5 9. Bg3 Nxg3 10. hxg3 Bg7 11. Nbd2 cxd4 12. Nxd4 d5 13. Bd3 O-O 14. a4 e5 15. Nf5 e4 16. Nxg7 exd3 17. Nh5 Ne5 18. a5 Qc6 19. f3 Bd7 20. Kf2 {Reis,L (2454)-Enescu,C (2297) ICCF 2008 0-1 (32)}) 9. Bd3 Bd7 10. Nbd2 cxd4 11. Nxd4 Nxd4 12. exd4 Nf4 {0-1 (12) Mironik,P-Meller,E (1855) ICCF 2016}) (7. Nbd2 Nxf4 8. Nc4 Nxg2+ 9. Bxg2 Qc7 10. Kd2 d5 11. Nce5 Bd6 12. Nxc6 bxc6 13. Qc2 cxd4 14. exd4 Bf4+ 15. Kd1 O-O 16. Bf1 f6 17. c4 c5 18. cxd5 Bb7 {Azzoug,S (1631)-Cheek,C (1974) ICCF 2015 0-1}) 7... Nxg3 (7... d5 8. Nbd2 Bd7 9. Be2 Rc8 10. O-O Nxg3 11. hxg3 cxd4 12. exd4 Bd6 13. Nb3 O-O 14. Qg5 a5 15. Rab1 a4 16. Na1 Ne7 17. Nc2 f6 18. Qd2 Qc7 19. Rfc1 {Prevenios,M (2164)-Alexa,J (2485) ICCF 2005 1/2-1/2 (35)}) (7... h6 8. Nbd2 d5 9. Bd3 Be7 10. O-O Nxg3 11. hxg3 O-O 12. a4 Rd8 13. Re1 Bd7 14. Bb5 Rac8 15. Qd1 a6 16. Bxc6 bxc6 17. Qc2 cxd4 18. exd4 c5 19. dxc5 {Menten,R (1989)-Maschietti,G (1988) ICCF 2021 0-1 (29)}) 8. hxg3 d5 9. Nbd2 (9. Qc2 g6 10. Nbd2 Bg7 11. O-O-O (11. Be2 O-O 12. Nb3 c4 13. Nbd2 Qc7 14. e4 b5 15. e5 Rb8 16. Nh2 b4 17. Ng4 Qb7 18. Rb1 Qe7 19. f4 Bd7 20. Kf2 h5 21. Ne3 Be8 22. Nf3 f6 {Ilyushchenko,Y (2372)-Novikov,S (2387) ICCF 2018 1/2-1/2 (33)}) 11... O-O {0-1 (11) Pereyra,D (1584)-Darmanto,H (2198) ICCF 2017}) (9. Bd3 Bd7 10. Nbd2 Be7 (10... cxd4 11. exd4 Bd6 12. Qc2 h6 13. O-O Rc8 14. a3 g5 15. Rab1 g4 16. Nh4 Nxd4 17. Qd1 Nc6 18. Qxg4 h5 19. Qg5 Qd8 20. Qe3 Ne5 21. Rfe1 Ng4 22. Qd4 {Bohak,J (2246)-Knostenbergs,J (2177) ICCF 2005 1-0 (69)}) 11. Qc2 cxd4 12. exd4 O-O-O 13. a4 Kb8 14. a5 Qc7 15. a6 b6 16. O-O-O h6 17. Kb1 Bd6 18. Rde1 f6 19. Bb5 e5 20. Qb3 Bf5+ {Prevenios,M (2164)-Ronczkowski,M (2513) ICCF 2005 0-1 (58)}) 9... cxd4 10. cxd4 (10. exd4 e5 11. dxe5 (11. Nb3 e4 12. Ne5 Nxe5 13. dxe5 a5 14. Qd2 a4 15. Nd4 Bd7 16. Be2 Rc8 17. a3 Bc5 18. O-O-O O-O 19. f4 Qg6 20. Qe1 Rfd8 21. Kb1 Re8 22. Ka1 h6 {Prevenios,M (2196)-Sánchez Ruiz,R ICCF 2008 1/2-1/2 (26)}) 11... Bc5 12. Kd1 Bxf2 13. Ng5 Bf5 14. a4 O-O 15. Be2 Rae8 16. g4 Bg6 17. b4 Nxe5 18. Ndf3 Nxg4 19. Nd4 Ne3+ 20. Kd2 Nc4+ 21. Kd1 Bxd4 { Ong,A (1670)-Brown,K ICCF 2016 1-0}) 10... Bd7 11. Nb1 Bb4+ 12. Nc3 O-O 13. Bd3 h6 14. O-O Rac8 15. Qd1 Bxc3 16. bxc3 Rc7 {Owens,J (2173)-Zaas,P (2348) ICCF 2017 1/2-1/2 (34)}) (5. b3 Nc6 (5... d5 6. Be2 Be7 7. O-O Nc6 8. c4 O-O 9. Bg3 Ne4 10. dxc5 Qxc5 11. Nd4 Bf6 12. f3 Nxg3 13. hxg3 Nxd4 14. exd4 Bxd4+ 15. Kh2 dxc4 16. Nd2 Qh5# {0-1 (16) Pereyra,D (1530)-González,M (2149) ICCF 2017}) ( 5... Nd5 6. Bg3 cxd4 7. Qxd4 Qa5+ 8. Nbd2 Nc6 9. Qb2 Bb4 10. Rc1 O-O 11. a4 Bc3 12. Qa3 e5 13. e4 Nd4 14. exd5 Nxf3+ 15. gxf3 Bxd2+ 16. Kd1 Bb4 17. Qb2 { Saba,N (1583)-Laven,G ICCF 2014 0-1}) 6. c3 (6. Nbd2 cxd4 7. exd4 Nxd4 (7... Bb4 8. Be3 Ng4 9. Bd3 Bc3 10. Rb1 d5 11. Ne5 Ncxe5 12. dxe5 Nxe3 13. fxe3 Qxe3+ 14. Be2 Bd7 15. a4 O-O 16. Rf1 f6 17. Rf3 Qg1+ 18. Bf1 fxe5 19. Qe2 {Metz, E-Glowatzky,T (2245) ICCF 2014 0-1}) 8. Nxd4 Qxd4 9. Be3 Qe5 10. Be2 Nd5 11. Nf1 Bb4+ 12. Nd2 Nxe3 13. fxe3 Qxe3 14. Rf1 Qd4 15. Rc1 O-O {0-1 (15) Pereyra, D (1584)-Bell,I (2344) ICCF 2017}) (6. Be2 cxd4 7. exd4 Nd5 8. Bg3 Bb4+ 9. Kf1 Nc3 10. Nxc3 Bxc3 11. Rb1 Nxd4 12. Nxd4 Bxd4 13. c4 O-O 14. f4 d5 15. b4 dxc4 16. Bxc4 e5 17. fxe5 Be6 {Pereyra,D (1530)-Suarez,M (2279) ICCF 2017 0-1}) 6... d5 (6... Be7 7. Bd3 O-O 8. Ne5 cxd4 9. exd4 Nd5 10. Bg3 f5 11. Nf3 h6 12. h3 d6 13. O-O Bd7 14. b4 Qc7 15. a3 f4 16. Bh2 Nb6 17. Nbd2 d5 18. Rc1 {Rodriguez, A-Kovats,J (1956) ICCF 2017 0-1 (36)}) 7. Nbd2 (7. Bd3 Nh5 8. Bg3 Nxg3 9. hxg3 g6 10. Nbd2 Bg7 11. O-O O-O 12. Re1 Bd7 13. Rc1 Rfe8 14. a4 cxd4 15. exd4 e5 16. dxe5 Nxe5 17. Nf1 Nxd3 18. Qxd3 Rxe1 {Janik,T-Satosuo,R (2077) ICCF 2011 0-1}) 7... Nh5 8. Bg3 Nxg3 9. hxg3 g6 (9... h6 10. c4 cxd4 11. exd4 Nxd4 12. Nxd4 Qxd4 13. Rh4 Qe5+ 14. Be2 g5 15. Rh5 Bc5 16. Nf3 Qf6 17. Rc1 g4 18. cxd5 gxf3 19. Bb5+ Kf8 20. Rxc5 fxg2 21. Ke2 {Pereyra,D (1530)-Rodríguez,L (2028) ICCF 2017 0-1 (25)}) 10. Qc2 cxd4 11. exd4 Bg7 12. O-O-O O-O 13. Bd3 Bd7 14. Rh2 a5 15. a4 Nb4 16. cxb4 Rfc8 {Pereyra,D (1601)-Copeland,S ICCF 2017 0-1 (26) }) 5... cxd4 (5... Qxb2 6. Nb5 Nd5 (6... cxd4 7. Nc7+ Kd8 8. Be2 Qc3+ 9. Kf1 Nd5 10. Nxa8 Nc6 11. Bg5+ f6 12. e4 fxg5 13. exd5 exd5 14. Nxg5 Ne5 15. Rb1 b6 16. Rb3 Qc5 17. Rb5 Qe7 18. h4 {Pranata,B-Setya Adhi,B (1671) ICCF 2018 1-0 (49)}) 7. Rb1 Qxa2 8. Ra1 (8. c4 Nxf4 9. Nc7+ Kd8 10. Nxa8 Ng6 11. d5 Na6 12. Bd3 Qa5+ 13. Kf1 Qc3 14. Ng5 Qf6 15. Ne4 Qe5 16. f4 Qb8 17. Ng5 Ke7 18. Qh5 Nb4 19. Nxf7 Kxf7 {Mujunen,M (1851)-Varonen,M (1982) ICCF 2018 0-1 (42)}) (8. Bc4 Qxc4 {0-1 (8) Lupienski,E (1970)-Sciarretta,R ICCF 2007}) 8... Qb2 9. Bc4 Qb4+ 10. Nd2 a6 (10... Na6 11. Rb1 Qa4 (11... Qa5 12. Bxd5 exd5 13. Qh5 d6 14. Nxd6+ Bxd6 15. Bxd6 Be6 16. Qg5 Kd7 17. Qe7+ {Gardner,A (2132)-Winter,M (1955) ICCF 2017 1-0}) 12. O-O Ndb4 13. Ne4 Qxc2 14. Qf3 d5 15. Nbd6+ Bxd6 16. Nxd6+ Kf8 17. e4 h5 18. Bh6 f5 19. Qxh5 Ke7 20. Bb5 Rf8 21. Bf4 {1-0 (21) Bullerkotte, F-Glowinski,D (1627) ICCF 2019}) 11. Rb1 (11. Nd6+ Bxd6 12. Bxd6 Nc3 13. Qg4 g6 14. O-O Nc6 15. Bxc5 Qb2 16. Bd3 d5 17. Qh4 b5 18. Qf6 Rg8 19. Nf3 Ra7 20. Ne5 Nxe5 21. Qxe5 Rb7 22. Rxa6 Na4 {Sedlácek,T (2211)-Cakl,M (2092) ICCF 2012 1-0} ) 11... axb5 12. Rxb4 Nc3 13. Qc1 cxb4 14. Bd3 d5 15. O-O Nc6 16. f3 Be7 17. Qe1 {Beavan,R (1833)-Owens,J (1300) ICCF 2010 1/2-1/2 (49)}) (5... d5 6. Nb5 Na6 7. a4 Be7 8. dxc5 Qxc5 9. Be5 Qb6 10. Be2 O-O 11. O-O Bd7 12. c4 Bc6 (12... Nb4 13. cxd5 Bxb5 14. axb5 Nbxd5 15. Qd4 Rfc8 16. Rfc1 h6 17. Rxc8+ Rxc8 18. Qxb6 axb6 19. g3 Nd7 20. Ra7 Rc1+ 21. Bf1 f6 22. Bc3 Nc5 23. Bd4 e5 24. Bxc5 { Daves,D-Ingersol,H (2417) ICCF 2014 1/2-1/2 (32)}) 13. Bd4 Bc5 14. b4 Bxd4 15. a5 Qd8 16. Nbxd4 Bd7 17. Qb3 {Dorer,M (2398)-Bruce,R (2002) ICCF 2019 1-0 (55)} ) 6. Nb5 (6. Nc4 Qb4+ 7. c3 dxc3 8. a3 (8. bxc3 Qxc3+ 9. Nfd2 Nc6 10. a3 Nd5 11. Rc1 Qf6 12. Bg3 Qg6 13. h4 f5 14. Be2 Qf6 15. Bh5+ g6 16. Bf3 {Gatterer,F (2393)-Mauro,L (2420) ICCF 2020}) 8... c2+ 9. axb4 cxd1=Q+ 10. Kxd1 Na6 11. b5 d5 12. bxa6 dxc4 13. Bxc4 bxa6 14. Ke2 Be7 (14... Bc5 15. Rhc1 O-O 16. Bxa6 Bxa6+ 17. Rxa6 Rfc8 18. Ra4 Bb6 19. Rac4 Rxc4 20. Rxc4 Rd8 21. e4 Ng4 22. Bg3 f6 23. h4 e5 24. Ne1 Nh6 25. f3 {1/2-1/2 (25) Stein,K (2522)-Iotov,V (2573) ICCF 2019}) 15. Nd4 (15. Rhd1 O-O 16. Nd4 Bc5 17. Bxa6 Bxa6+ 18. Rxa6 Rfc8 19. Nc6 Nd5 20. Be5 Nb4 21. Nxb4 Bxb4 22. f4 h5 23. Rd7 Rc2+ 24. Kf1 Rc1+ 25. Kf2 Rc2+ 26. Kf1 {1/2-1/2 (26) Dorer,M (2398)-James,A (2395) ICCF 2019}) 15... Nd5 16. Be5 Nb4 17. Bxg7 Rg8 {Andersen,J (2303)-Celestini,M (2340) ICCF 2019 1/2-1/ 2 (28)}) 6... Nd5 (6... Na6 7. exd4 d6 (7... Be7 8. c3 (8. Be2 O-O 9. O-O d6 10. c4 Bd7 11. a4 Bc6 12. Re1 Qd8 13. Qb3 Ne4 14. Nd2 Nxd2 15. Bxd2 d5 16. c5 b6 17. cxb6 axb6 18. Rec1 Qd7 19. Rc2 Rfc8 {Grummitt,W (1917)-Walsh,P (1923) ICCF 2020 1/2-1/2 (44)}) (8. c4 O-O (8... Bb4+ 9. Nd2 Qc6 10. c5 Ne4 11. a3 Bxd2+ 12. Bxd2 O-O 13. Bf4 b6 14. f3 Nf6 15. b4 bxc5 16. dxc5 d5 17. Nd4 { Daatselaar,J (2182)-Dijk,J (1810) ICCF 2020 1-0}) 9. a3 d6 10. b4 e5 11. dxe5 Ng4 12. Bg3 dxe5 13. Bd3 f5 14. h3 Qh6 15. O-O f4 16. Bh2 Nxh2 17. Nxh2 Rd8 18. c5 Qc6 19. Nf3 Rxd3 {Pietrobono,A (2253)-Martins Barriga,F (2231) ICCF 2016 1-0 (26)}) 8... O-O 9. a4 d6 10. Bd3 Nc7 11. O-O Ncd5 (11... Bd7 12. Qe2 Ncd5 13. Bd2 a6 14. a5 Qd8 15. Na3 Nh5 16. g3 Nhf6 17. c4 Nc7 18. Rfe1 Qb8 19. Nc2 Re8 20. Bc3 Qa7 21. Ne3 Bc6 22. Bc2 Rac8 23. d5 {Lund,S (1340)-Klein,M (1882) ICCF 2019 1-0 (25)}) 12. Bd2 a6 13. a5 Qc6 14. Na3 b5 15. axb6 Nxb6 16. Re1 Re8 17. b4 d5 18. Ne5 Qc7 19. Bf4 {Lund,S (1340)-Allenby,E (1768) ICCF 2019 1-0}) 8. a4 (8. Nd2 Qc6 (8... d5 9. Be2 Bd7 10. a4 Be7 11. c4 O-O 12. c5 Qa5 13. O-O {Manarin,F (1986)-Allenby,E (1714) ICCF 2020}) 9. Nc4 (9. c3 Nd5 10. Bg3 Nac7 11. a4 a6 12. Nxc7+ Qxc7 13. Be2 Be7 14. Qb3 O-O 15. Bf3 Nf6 16. O-O Rb8 17. c4 b6 18. Rfc1 Nd7 19. Qe3 Bb7 20. Bxb7 Qxb7 {Hackenberg,T (1988)-Bozic,D (1578) ICCF 2017 1-0 (28)}) 9... Qe4+ 10. Be3 Qc6 11. Nxa7 Rxa7 12. d5 Nxd5 13. Bxa7 b6 14. Na3 Nac7 15. Bb8 Be7 16. Qf3 O-O 17. Bxc7 Qxc7 18. Bd3 Bb7 19. O-O Nb4 { Rost,D (2461)-Lelenko,A (2463) ICCF 2013 1-0 (63)}) (8. c3 Bd7 {1/2-1/2 (8) Trana,A (2357)-Lorentzen,Ø (2446) ICCF 2005}) (8. c4 Bd7 9. a4 e5 10. a5 Qc6 11. Qe2 e4 12. Nd2 d5 13. cxd5 Qxd5 14. f3 Bb4 15. fxe4 Qc6 16. d5 Qc2 17. Nd6+ Ke7 18. Qf2 Qxb2 19. Rd1 Nc5 {Owens,J (1300)-Young III,W (2028) ICCF 2011 0-1 (60)}) 8... Nb4 (8... Be7 9. Be2 O-O 10. O-O Qd8 11. a5 (11. h3 b6 12. Nd2 Bb7 13. Nc4 d5 14. Bf3 Nb4 15. c3 Nc6 16. Ncd6 Ba6 17. Be2 Qd7 18. Re1 Rfd8 19. Bh2 Na5 20. Be5 Bxd6 21. Nxd6 Bxe2 22. Qxe2 Qe7 {Cañizares Cuadra,P (2220)-Silva Pereira,R (2386) ICCF 2007 1/2-1/2}) 11... Nc7 12. Nxc7 Qxc7 13. c4 Bd7 14. Bd3 Bc6 15. Re1 Rfe8 16. b4 a6 17. Rc1 Qd7 18. h3 h6 19. Qe2 Bf8 20. Be3 {Rogers,B (1999)-Mulder,C (1920) ICCF 2017 1/2-1/2 (35)}) 9. Nd2 Qd8 10. Nc4 Ne4 11. f3 a6 12. fxe4 axb5 13. Nd2 e5 14. Bg3 bxa4 15. c3 Nc6 16. d5 Nb8 17. Rxa4 Rxa4 18. Qxa4+ {Torrijos Alhambra,J (2124)-Bonay Toscas,S (2184) ICCF 2011 1-0 (62)} ) 7. Qxd4 Qxd4 8. Nfxd4 Nxf4 9. Nc7+ (9. exf4 Kd8 10. Nf3 f6 11. O-O-O a6 12. Nd6 Bxd6 13. Rxd6 b5 14. Be2 Bb7 15. Rd3 Bd5 16. Rhd1 Nc6 17. f5 Ke7 18. Re3 Kf7 19. Nd4 Rhc8 20. f4 Ra7 {Rogetzer,K (2529)-Dunlop,G (2535) ICCF 2018 1/2-1/ 2 (30)}) 9... Kd8 10. Nxa8 Nd5 (10... Ng6 11. Nb5 Nc6 12. a4 (12. O-O-O b6 13. Nxa7 Nxa7 14. Nxb6 Ne5 15. Nxc8 Nxc8 16. Be2 h5 17. h3 Kc7 18. g4 h4 19. f4 Nc6 20. c3 Nb6 21. Rhe1 Bc5 22. Bb5 Nd5 23. Rd3 Rb8 {Larsen,S (2441)-Burgarth,U (2466) ICCF 2013 0-1 (27)}) 12... b6 13. Nxa7 Nxa7 14. Nxb6 Bb7 15. Nc4 (15. c3 Ne5 16. b4 Kc7 17. a5 Bc6 18. Rb1 (18. Kd2 d5 19. f4 Nd7 20. Nxd7 Kxd7 21. Bd3 Bd6 22. Rhb1 Rb8 23. g3 h5 24. Ra2 Kc7 25. b5 Bxb5 26. Rab2 Kc6 27. c4 dxc4 28. Bxc4 Bc7 29. Bxb5+ Rxb5 {Gardner,A (2211)-Farmer,M (1918) ICCF 2018 1-0 (37)}) 18... Be7 (18... Nb5 19. Rb3 d5 20. Be2 Be7 21. O-O Rd8 22. c4 dxc4 23. Nxc4 Nxc4 24. Bxc4 Bd5 25. Bxd5 Rxd5 26. Rc1+ Kb7 27. Rb2 f5 28. h3 e5 29. g4 f4 30. Kg2 {Rost,D (2460)-Titzhoff,F (2316) ICCF 2014 1-0 (64)}) 19. Kd2 Nb5 20. f4 Ng4 21. Bxb5 Bxb5 22. c4 Bc6 23. Rhc1 Nf6 24. Ke2 Rg8 25. b5 Bxg2 26. c5 g5 { Shulman,B (2433)-Novikov,S (2397) ICCF 2018 1/2-1/2 (40)}) 15... Be7 16. c3 Kc7 17. b4 Ra8 18. a5 Bc6 19. Na3 d5 20. Be2 Nc8 21. O-O Nd6 22. Rfc1 {Cuccumini,V (2165)-Shabaev,V (2164) ICCF 2020 1/2-1/2 (25)}) 11. Nb5 (11. Be2 b6 12. Bf3 Ba6 13. O-O-O (13. a4 Nc6 14. Nb5 Bb7 15. Bxd5 exd5 16. Nac7 Nb4 17. Kd2 a6 18. c3 axb5 19. Nxb5 Nc6 20. Kc2 h5 21. h3 Rh6 22. Rhe1 h4 23. f3 Rg6 24. Re2 Ne7 { Olivas,C-MacTilstra,I ICCF 2014 0-1 (50)}) 13... Kc8 14. a4 (14. Rhg1 Nf6 15. a4 Bb7 16. Nxb6+ axb6 17. Bxb7+ Kxb7 18. Rge1 d5 19. Nb5 Be7 20. f3 Nc6 21. c3 h5 22. Kc2 h4 23. h3 Rc8 24. Re2 Nh5 25. Ree1 Bf8 {Woodard,D (2301)-Kloster,J (2326) ICCF 2012 0-1 (36)}) (14. Kb1 Nf6 15. Rhe1 g5 16. h3 h5 17. g3 Bc5 18. a3 d5 19. Bg2 Nbd7 20. b4 Bxd4 21. Rxd4 Bb7 22. h4 g4 23. Nxb6+ Nxb6 24. Kc1 Kc7 25. a4 Kd6 {Rakhimov,R-Manaenkov,V (2423) ICCF 2013 0-1 (41)}) 14... Bb7 15. Nb5 Bxa8 16. Nxa7+ Kd8 17. c3 Nc6 18. Bxd5 exd5 19. Nb5 Na5 20. Kc2 d4 21. b4 Be4+ 22. Kb2 Nc4+ {Keskowski,T (2374)-Kloster,S (2273) ICCF 2012 0-1 (50)}) (11. c4 Bb4+ 12. Ke2 Nf6 13. Nb5 Nc6 14. f3 Be7 (14... b6 15. a3 Be7 16. Nxa7 Nxa7 17. Nxb6 Bb7 18. Kf2 Bc6 19. b4 Kc7 20. c5 Nd5 21. Nxd5+ Bxd5 22. Rc1 Rb8 23. Bc4 Bc6 24. Rhd1 Ba4 25. Rd3 f5 26. Bb3 {Lund,S (1340)-Chinnici,C ICCF 2019 0-1 (63)}) 15. Kf2 b6 16. Nxa7 Nxa7 17. Nxb6 Bb7 18. Be2 Bc6 19. a4 Bb4 20. a5 d6 21. Rhc1 Kc7 22. c5 dxc5 {Turaga,M (2259)-Fekih,B (2292) ICCF 2017 1/ 2-1/2 (58)}) (11. Nf3 Be7 12. Bc4 b6 13. Bxd5 exd5 14. Ne5 Rf8 15. O-O-O Bb7 16. Nxb6 axb6 17. Nf3 h5 18. Nd4 Na6 19. Ne2 Nc5 20. f3 Ne6 21. Rhe1 g6 22. Nd4 Nxd4 {Ruvolo,L-Lackner,J (1969) ICCF 2017 0-1 (29)}) (11. e4 Nf6 12. Nb5 Nc6 13. e5 Nxe5 14. Nxa7 Bc5 15. Nb5 Neg4 16. f3 Ne3 17. Kd2 d5 18. c3 Bd7 19. a4 Nc4+ 20. Bxc4 dxc4 21. Na3 Ke7 22. Nc7 Rd8 {Savoca,A (2193)-Conato,L ICCF 2008 1/2-1/2 (54)}) 11... Nc6 12. a3 b6 13. c4 Nf6 14. Nxa7 Nxa7 15. Nxb6 Bb7 16. b4 Kc7 (16... Be7 17. f3 Nc6 18. c5 (18. O-O-O Kc7 19. Na4 d5 20. Kb2 Ra8 21. Kb3 Rb8 22. c5 d4 23. e4 Nd7 24. Bb5 Bf6 25. h4 h6 26. Rd2 Be5 27. Rhd1 Na5+ 28. Ka2 Bc6 29. Bxc6 Nxc6 {Muljadi,P (2107)-Hechl,G (2242) ICCF 2016 1/2-1/2 (60)}) 18... Nd5 19. Nc4 f5 20. b5 Na7 21. Rc1 Ba8 22. Nd6 Bxd6 23. cxd6 Nxe3 24. Be2 Nc8 25. Kf2 Nd5 26. a4 Nxd6 27. a5 Nf4 28. Bf1 {Ramirez,J (2374)-Reyes Maldonado,C (2414) ICCF 2020 1/2-1/2 (42)}) 17. Na4 Bd6 (17... Be7 18. f3 Ra8 19. Nc3 Nc6 (19... Nc8 20. O-O-O Bc6 21. Kb2 Nb6 22. Kb3 d5 23. Nb5+ Bxb5 24. cxb5 Ne8 25. Bd3 Nd6 26. e4 Kb7 27. exd5 exd5 {1/2-1/2 (27) Iotov,V (2573) -Biedermann,T (2485) ICCF 2019}) 20. O-O-O Ne5 21. Kb2 d5 22. Nb5+ Kb8 23. c5 Bc6 24. Kb3 g5 25. Be2 g4 26. Rhf1 Kb7 27. Ra1 gxf3 28. gxf3 Nc4 29. Bxc4 { Ramirez,J (2374)-Mauro,L (2420) ICCF 2020 1/2-1/2 (32)}) 18. Rb1 Ra8 19. f3 Nc8 20. Nc3 Bc6 21. Rb3 Be5 22. Bd3 Nb6 23. Ne2 Ba4 {1/2-1/2 (23) Turaga,M (2259) -Somani,S (2268) ICCF 2017 1 d4 Nf6 2 Nf3 e6: Torre,-London and Colle Systems}) 5. Nc3 (5. Nbd2 Be7 (5... h6 6. Bg3 d5 7. c3 Be7 8. Bd3 Nh5 9. Be5 Bd7 10. Bc2 Rc8 11. h3 Nxe5 12. dxe5 g6 13. O-O O-O 14. a4 Qc7 15. Re1 b6 16. Qe2 Bc6 17. b3 {Andini,D-Vega Palma,M (2306) ICCF 2021}) (5... d5 6. Bb5 Qb6 7. c4 Be7 8. dxc5 Bxc5 9. O-O O-O 10. Rc1 Bd7 11. Qe2 a6 12. Bxc6 Bxc6 13. Ne5 Rac8 14. Nb3 Be7 15. Nd4 Rfd8 16. Ndxc6 bxc6 {Oppermann,P (2289)-Binas,J (2121) ICCF 2014 1/ 2-1/2}) 6. dxc5 Bxc5 7. a3 d5 8. c4 O-O 9. Bd3 b6 10. O-O dxc4 11. Nxc4 Bb7 12. Rc1 Rc8 13. Qe2 Nh5 14. Bg5 Be7 15. Rfd1 Qc7 16. Nce5 Nf6 {Hoffman,D (1863) -Graupera,C ICCF 2015 1-0}) (5. dxc5 Bxc5 6. Ne5 d6 7. Bb5 Qa5+ 8. Nc3 dxe5 9. Bxe5 Bd7 10. O-O Nxe5 11. Bxd7+ Nexd7 12. Re1 Bb4 13. a3 Bxc3 14. bxc3 O-O-O 15. c4 Ne5 16. Qe2 Rd2 {Almeida,C-Earley,J ICCF 2021 0-1}) (5. Bb5 Qa5+ 6. Nc3 Nd5 7. Bxc6 Nxc3 8. bxc3 Qxc3+ 9. Kf1 dxc6 {0-1 (9) Pereyra,D (1584)-Packroff, H (2216) ICCF 2017}) (5. Be2 Qb6 6. b3 (6. O-O cxd4 7. Nxd4 Nd5 8. Nb3 Nxf4 9. exf4 d5 10. c4 dxc4 11. Bxc4 g6 12. Nc3 Bg7 13. Qd6 Qb4 14. Qxb4 Nxb4 15. Rfd1 Ke7 16. a3 Nc6 17. Bb5 Rd8 {Blondel,F (2029)-Luey,R (2280) ICCF 2018 0-1 (71)}) 6... cxd4 7. exd4 Nd5 8. Bg3 Qa5+ 9. Nfd2 Nxd4 10. O-O Nxe2+ 11. Kh1 Nxg3+ 12. fxg3 Ne3 {1-0 (12) Pereyra,D (1530)-Owens,J (2222) ICCF 2017}) (5. c4 Qb6 6. b3 (6. Qb3 cxd4 7. Qxb6 axb6 8. Nxd4 Bb4+ 9. Nc3 Ne4 10. Ndb5 Ra5 11. Bd3 Nxc3 12. Nxc3 Bxc3+ 13. bxc3 e5 14. Bg3 d6 15. f4 f5 16. e4 exf4 {Mujunen,M (1923) -Ilzig,G (2264) ICCF 2017 0-1 (40)}) 6... cxd4 7. exd4 Bb4+ 8. Bd2 Nxd4 9. Bd3 Nxf3+ 10. Qxf3 O-O 11. O-O Bxd2 12. Nxd2 d5 13. Qf4 Re8 14. cxd5 exd5 15. Rfe1 Rxe1+ 16. Rxe1 Be6 {Swahnberg,L (1624)-Snokowski,M ICCF 2011 0-1 (31)}) (5. Bd3 d5 6. dxc5 Bxc5 7. h3 Bd6 8. g3 e5 9. Bg5 e4 10. Bb5 exf3 11. Bxf6 Qxf6 12. Qxd5 O-O 13. c3 Bd7 14. Nd2 a6 15. Ba4 b5 16. Bb3 Ne5 {Metz,E-Perry,W ICCF 2015 0-1 (53)}) 5... cxd4 (5... Qa5 6. Nd2 cxd4 7. Nb3 (7. Nc4 Qd8 8. Nb5 Nd5 9. Bd6 (9. Qf3 Bb4+ 10. c3 dxc3 11. bxc3 Qf6 12. Ncd6+ Bxd6 13. Nxd6+ Kf8 14. Ne4 Qf5 15. Bd6+ Nde7 16. Qxf5 exf5 17. Ng5 b6 18. O-O-O Bb7 19. h4 Ke8 20. h5 Rc8 {Staniszewski,J (2483)-Ulusal,H ICCF 2011 1-0 (50)}) 9... Qf6 10. exd4 a6 11. Be5 Nxe5 12. dxe5 Qf4 13. Nbd6+ Bxd6 14. Nxd6+ Ke7 15. Qh5 g6 16. Qe2 f6 17. c4 Nb4 18. c5 Qxe5 {Løvås,R (1875)-Lilleeng,A (2111) ICCF 2010 0-1 (46)}) 7... Qb6 (7... Qd8 8. exd4 Be7 9. d5 Nxd5 10. Nxd5 exd5 11. Qxd5 O-O 12. Be2 a5 13. a4 d6 14. O-O Bf6 15. c3 Re8 16. Rae1 Be6 17. Qd1 {Sesko,M (2174)-Ryder,A (2220) ICCF 2013 1/2-1/2}) 8. exd4 a6 9. a3 d5 10. Bd3 Be7 11. O-O O-O 12. Qf3 Bd7 13. Rfe1 Rfc8 14. g4 g6 15. Bg5 Kg7 16. h3 h6 17. Bf4 {Lund,S (2283) -Bartsch,R (2299) ICCF 2020 1/2-1/2 (42)}) (5... Qb6 6. a3 Nh5 7. dxc5 (7. Be5 cxd4 8. Nb5 Nxe5 9. Nxe5 Nf6 10. Nc4 Qc6 11. Nxd4 Qc5 12. b4 Qc7 13. Nb5 Qb8 14. Nbd6+ Bxd6 15. Qxd6 Qxd6 16. Nxd6+ Ke7 17. O-O-O Ne8 18. Nxe8 {Neuburger, I-Williamson,D (1947) ICCF 2014 1/2-1/2 (31)}) 7... Bxc5 8. Na4 Qa5+ 9. c3 Nxf4 10. b4 Qc7 11. Nxc5 Nd5 12. Rc1 Nf6 13. c4 O-O 14. Na4 d6 15. Be2 Rd8 16. O-O b6 17. Nc3 {Steiger,W (2468)-Broniek,M (2450) ICCF 2019 1/2-1/2 (36)}) 6. exd4 (6. Nxd4 d5 7. Bb5 Bd7 8. O-O a6 9. Be2 Qb6 10. Nb3 Rc8 11. Bd3 Be7 12. a3 O-O 13. Na4 Qa7 14. Bg3 e5 15. Nc3 Be6 16. Bh4 Rfd8 17. Qe1 b5 {Lagergren,H (1969) -Stibal,G (1998) ICCF 2005 0-1 (54)}) 6... Bb4 (6... Be7 7. a3 (7. Bd3 O-O ( 7... a6 8. O-O Nb4 9. Be2 O-O 10. h3 b6 11. a3 Nfd5 12. Nxd5 Nxd5 13. Bh2 Nf6 14. c4 Bb7 15. b4 d6 16. Qd3 Qd7 17. Nd2 Rfc8 18. Rfc1 Bc6 19. Nb3 {Bauer,R (2571)-Bellmann,H (2462) ICCF 2019 1/2-1/2 (75)}) (7... Qb6 8. Na4 Qa5+ 9. c3 b5 (9... b6 10. O-O Bb7 11. Re1 Qh5 12. c4 g5 13. Nxg5 Nxd4 14. Be4 Qxd1 15. Raxd1 Nxe4 16. Nxe4 Nf5 17. Nac3 f6 18. Nd5 Bxd5 {1/2-1/2 (18) Woodard,D (2301) -Morrow,W (2301) ICCF 2012}) 10. Nc5 b4 11. Nb3 Qb6 12. c4 O-O 13. O-O a5 14. d5 a4 15. c5 Qa7 16. dxc6 axb3 17. axb3 Qxa1 18. Qxa1 Rxa1 19. Rxa1 {Dorer,M (2398)-Mashin,A (2302) ICCF 2019 1/2-1/2}) 8. O-O a6 (8... Nb4 9. Be2 b6 10. h3 Bb7 11. Bg3 d5 12. a3 Nc6 13. Bd3 Rc8 14. Bh2 Na5 15. Re1 Nc4 16. Qc1 Na5 17. Qb1 h6 18. Ne2 Ne4 19. Ng3 Bd6 20. a4 {Hackenberg,T (2045)-Arranja,A (2019) ICCF 2019 1-0}) (8... d5 9. a3 a6 10. Re1 Bd7 11. h3 Rc8 12. Ne2 Na5 13. c3 Bb5 14. Bc2 Bd6 15. Bg5 h6 16. Bh4 Nc4 17. Qc1 Be7 18. Nf4 Re8 19. Ne5 Qc7 20. a4 { Williams,S (2279)-Blake,M (2264) ICCF 2016 1/2-1/2 (49)}) 9. Re1 d6 10. Ne4 ( 10. a3 b5 11. Ne4 Bb7 12. c3 Nd5 (12... Nxe4 13. Bxe4 Na5 14. Bxb7 Nxb7 15. Re3 Re8 16. Qd3 Na5 17. Re2 Nc4 18. b3 Nb6 {Jácome Jiménez,A (2264)-Rivas Mozo,A (2260) ICCF 2019 1/2-1/2}) 13. Bc1 Qd7 14. h4 Na5 15. Ng3 Nf6 16. Ng5 h6 17. Nh3 e5 18. Bxh6 e4 19. Bxe4 Nxe4 20. Nxe4 gxh6 21. Qh5 Rae8 {Holroyd,K (2487) -Dunlop,G (2536) ICCF 2019 1/2-1/2 (43)}) 10... Nb4 11. Nxf6+ Bxf6 12. Be4 d5 13. Bd3 Nxd3 14. Qxd3 Be7 15. Re3 f6 16. c3 Bd7 17. Ne1 Qb6 18. Qd2 Rac8 { Dutra,A (2431)-Novikov,S (2397) ICCF 2018 1/2-1/2 (50)}) (7. h3 O-O 8. Qd2 d5 9. O-O-O a6 10. g4 b5 11. g5 Nh5 12. Be3 {0-1 (12) Pereyra,D (1584)-Packroff,H (2216) ICCF 2017}) (7. Be2 d5 8. Ne5 Nd7 9. Nf3 a6 10. O-O b5 11. Bd3 O-O 12. h3 Bb7 13. a4 b4 14. Ne2 Rc8 15. Rb1 Nb6 16. c3 Nc4 17. Re1 N6a5 18. Bc1 bxc3 { Beltins,G (1953)-Hlavácek,L (2005) ICCF 2014 1-0 (53)}) 7... O-O 8. Bd3 a6 9. O-O b5 (9... d6 10. Qd2 Bd7 11. Rfe1 Rc8 12. Bg5 d5 13. h3 Re8 14. Rab1 b5 15. Bh4 Na5 16. Ne5 Nc4 17. Bxc4 bxc4 18. Re3 Nh5 19. Bxe7 Rxe7 20. b4 Be8 21. Rbe1 {Niziolek,J (2016)-Hesselberg,L (1937) ICCF 2015 1/2-1/2 (27)}) 10. d5 exd5 11. Bf5 Bb7 (11... g6 12. Bh3 Bb7 13. Re1 Na5 14. Bg5 Rc8 15. Qd4 Rc4 16. Qd3 Re8 17. b3 Rc7 18. Qd2 h6 19. Bh4 Rc5 {1/2-1/2 (19) Mary,P (2476)-Galanov,S (2486) ICCF 2012}) 12. Nxd5 Nxd5 13. Qxd5 Na5 14. Qxd7 Qxd7 15. Bxd7 Nc4 16. b3 Nxa3 17. c3 Rfd8 18. Rfd1 {Vasile,C (2112)-Pepene,I ICCF 2016 1/2-1/2 (28)}) (6... a6 7. a3 (7. Bd3 b5 (7... Qb6 8. Na4 Qa7 9. c4 Bb4+ 10. Nc3 Nxd4 11. O-O Nxf3+ 12. Qxf3 b6 13. a3 Be7 14. Rad1 Bb7 15. Qh3 h5 16. b4 Bc6 17. Rfe1 Qb7 18. Re3 b5 19. c5 {Lagergren,H (1877)-Kueng,V ICCF 2020 0-1 (66)}) 8. Ne4 Nd5 9. Bg3 f5 10. Nd6+ {1-0 (10) Hackenberg,T (2045)-Brunori,V (2241) ICCF 2019}) (7. d5 exd5 8. a3 Be7 9. Nxd5 Qa5+ 10. Nc3 d5 11. Be2 O-O 12. O-O Re8 13. Re1 Be6 14. Bd3 Nh5 15. Bd2 Nf6 16. Nb5 Qb6 17. Be3 Qd8 18. Nbd4 {Reyes Maldonado,C (2406) -Graterol,S (2381) ICCF 2020 1/2-1/2 (36)}) 7... Be7 8. Qd2 {Ellis,L (2420) -Dijon,J (2459) ICCF 2021}) (6... d5 7. Nb5 Nh5 8. Bc7 Qd7 9. Ne5 Nxe5 10. Bxe5 Nf6 11. Nc7+ Kd8 12. Nxa8 Bd6 13. a4 Ke7 14. Bb5 Qd8 15. Qf3 Bd7 16. Bxd6+ Kxd6 17. Qa3# {1-0 (17) Lund,S (1340)-Azzi,R (1521) ICCF 2019}) 7. Bd3 Nd5 (7... d5 8. O-O O-O 9. Re1 Bd7 10. Rb1 Rc8 11. a3 Bxc3 12. bxc3 b6 13. Ba6 Ne4 14. Bxc8 Bxc8 15. Qd3 Na5 16. Ra1 Bb7 17. Ne5 Qf6 18. Be3 Rc8 19. f3 {Williams,S (2279) -Thurlow,K (2185) ICCF 2017 1/2-1/2 (32)}) 8. Bd2 Nxc3 9. bxc3 Be7 10. O-O (10. c4 b6 (10... Bf6 11. c3 (11. d5 exd5 12. cxd5 Qe7+ 13. Kf1 Nb4 14. Bxb4 Qxb4 15. Rb1 Qc5 16. c4 O-O 17. h4 b6 18. g3 g6 19. h5 Ba6 20. Rc1 Rac8 21. Kg2 Bb7 22. Qd2 b5 23. Rb1 Ba6 24. hxg6 fxg6 25. Qh6 Qe7 26. cxb5 Bb7 27. Be4 d6 28. Rb4 Rc5 29. Qe3 Qf7 30. a4 Bd8 31. Qe2 Rc3 32. Rc4 Rxc4 33. Qxc4 Bb6 34. Qe2 Bc8 35. a5 Bc5 36. Rh4 Qe8 37. Qd2 Rf6 38. Bd3 Qd7 39. Qh6 Qf7 40. Rf4 Rxf4 41. Qxf4 Qxf4 42. gxf4 Kf7 43. Ng5+ Kg7 44. Ne4 Bb4 45. a6 Ba5 46. Nxd6 Bd7 47. Ne4 Bf5 48. f3 Bb6 49. Bf1 Bd7 50. Nc3 Kf7 51. Kg3 Bc7 52. Ne4 h5 53. Bc4 Kg7 54. d6 Bb6 55. Nc3 Bc5 56. Bd5 Bf5 57. Bc6 h4+ 58. Kxh4 Bxd6 59. Nd5 Bc5 60. b6 { 1-0 (60) Mulligan,B (2397)-Luey,R (2238) ICCF 2017 1 d4 Nf6 2 Nf3 e6: Torre, -London and Colle Systems}) 11... b6 12. O-O Ba6 13. Be3 O-O 14. Qc2 h6 15. Rab1 Na5 16. c5 Bxd3 17. Qxd3 d5 18. cxd6 Qxd6 19. Nd2 Qc6 20. Rfe1 Rfd8 21. Bf4 Rac8 22. Ne4 {Deans,M (2221)-Ewan,R (2236) ICCF 2016 0-1 (60)}) 11. O-O O-O 12. Rb1 (12. d5 Nb4 13. dxe6 Nxd3 14. exf7+ Rxf7 15. cxd3 d6 16. Qe2 Bg4 17. Qe4 Bxf3 18. gxf3 Rc8 19. Rfe1 Rc5 20. Rac1 Bf8 21. d4 Rcf5 22. f4 d5 23. Qe2 dxc4 {Matozo,P (2176)-Reis,C (2363) ICCF 2017 1/2-1/2 (34)}) 12... Ba6 13. Qe2 Qc7 14. d5 Na5 15. Bxa5 bxa5 16. Nd4 Bd6 17. h3 Rac8 18. Nb5 Bxb5 19. cxb5 e5 20. g4 g6 21. Kh1 Qd8 {Hjorth,J (2072)-Cleto Jr.,D (2258) ICCF 2015 1/2-1/2 (44)}) (10. Qe2 d5 11. Rb1 O-O 12. O-O b6 13. Rbe1 Bb7 14. h4 Bxh4 15. g4 Be7 16. Kg2 Qd6 17. Rh1 g6 18. Qe3 f5 19. Qh6 Rf7 20. Bf4 Qd7 21. Bb5 Bf8 {Gulbis, H (2195)-Ward,R (2168) ICCF 2018 1-0 (27)}) 10... d5 11. Re1 b6 12. Rb1 O-O 13. a4 (13. g3 h6 14. Ne5 Nxe5 15. Rxe5 Bd6 16. Rh5 f5 17. g4 Qe8 18. g5 Bd7 19. gxh6 g6 20. h7+ Kh8 21. Rh6 e5 22. dxe5 Bxe5 23. Be3 Rf6 24. Qf3 Re6 {Betker,J (2440)-Salzmann,S (2347) ICCF 2017 1/2-1/2 (48)}) 13... Bf6 (13... Bd7 14. Qe2 Bf6 15. Ra1 Na5 16. Ne5 Bxe5 17. Qh5 f5 18. Rxe5 Rc8 19. Re3 Qe8 20. Qxe8 Rfxe8 21. Ba6 Rc7 22. Rg3 Nc4 23. Bf4 e5 24. dxe5 Bc8 25. e6 {Ellis,L (2391)-Jensen, C (2396) ICCF 2019 1/2-1/2 (48)}) 14. Bf4 Bb7 {Gray,G (2333)-Nutt,J (2254) ICCF 2019 1-0 (74)}) (3. g3 c5 (3... b5 4. Nbd2 (4. e4 Nxe4 5. Bxb5 Bb7 (5... Be7 6. O-O O-O 7. Nc3 Nxc3 8. bxc3 d6 9. Rb1 Nd7 10. Be3 Rb8 11. Rb3 Nf6 12. Qe2 Bb7 13. Rfb1 Ba8 14. Bd3 Rxb3 15. axb3 Qd7 16. Ne1 Qc6 17. f3 {Straka,J (2203)-Bürger,A (2172) ICCF 2011 1/2-1/2 (29)}) 6. O-O c5 (6... Be7 7. Nc3 Nxc3 8. bxc3 O-O 9. Rb1 Nc6 10. Re1 Rb8 11. Qd3 Bd6 12. Bd2 Ne7 13. Ba4 h6 14. c4 Nf5 15. c3 c5 16. d5 Qc7 17. Bc2 h5 18. Nh4 {Straka,J (2154)-Nika,O (2018) ICCF 2011 1-0 (47)}) 7. c3 cxd4 8. cxd4 Qb6 9. Be2 Be7 10. Nc3 O-O 11. Qc2 Rc8 12. Be3 Qa5 13. Qb3 Nxc3 14. bxc3 Be4 15. Rfc1 Ba3 {Humbert,P (1387)-Beck,G (1979) ICCF 2014 0-1 (29)}) (4. c3 Bb7 5. Bg2 Be7 (5... c5 6. Bg5 Be7 (6... cxd4 7. Bxf6 gxf6 8. cxd4 d5 9. O-O Nd7 10. Nbd2 Qb6 11. e3 Bd6 12. Qe2 b4 13. Rfc1 f5 14. Bf1 a5 15. Qb5 Ke7 16. Qa4 Nf6 17. Rc2 Rhc8 18. Rac1 {Lipecki,A (2352)-Gazi,M (2382) ICCF 2018 1/2-1/2 (52)}) 7. dxc5 Bxc5 8. O-O O-O 9. Qb3 a6 10. a4 Qb6 11. Bxf6 gxf6 12. Ne1 Nc6 13. Nd3 Be7 14. Nd2 Na5 15. Qd1 Bxg2 16. Kxg2 Nc4 17. Kg1 {Schieferdecker,M (2348)-Iacomi,S (2343) ICCF 2021 1/2-1/2}) 6. Bg5 a5 7. Qd3 b4 8. O-O c5 9. Rc1 O-O 10. cxb4 cxb4 11. Bxf6 Bxf6 12. e3 d5 13. a4 Qb6 14. Nbd2 Nd7 15. Nb3 Ba6 {Reichelt,H (2305)-Adams,M (2329) ICCF 2021 1/2-1/2 (45)}) (4. Qd3 a6 (4... Ba6 5. a3 (5. Bg2 c5 6. O-O d5 7. dxc5 b4 8. Qd1 Bxc5 9. a3 bxa3 10. b3 O-O 11. c4 Nc6 12. Bxa3 Bxa3 13. Rxa3 Bb7 14. Nd4 Nb4 15. Qd2 a5 16. Nc3 Rb8 {Dedina,M (2262)-Mende,I (2352) ICCF 2014 1/2-1/2 (27)}) (5. Be3 b4 6. Qd2 Bb7 7. Bg2 Be7 8. O-O a5 9. a3 O-O 10. axb4 axb4 11. Rxa8 Bxa8 12. c4 bxc3 13. bxc3 c5 14. Qa2 cxd4 15. cxd4 Nc6 16. Bg5 Ne4 { Ogier,A-Weinstein,M ICCF 2020 0-1 (49)}) 5... c5 6. dxc5 Bxc5 7. b4 Be7 8. Bg2 d5 9. Nd4 Qc8 10. Bb2 Nbd7 11. Nd2 O-O 12. O-O Nb6 13. N4b3 Nc4 14. Bd4 Bb7 15. Qc3 Nd6 16. Nc5 {Pawlowski,W (2192)-Eliseev,V (2209) ICCF 2016 1/2-1/2 (45)}) ( 4... b4 5. Bg2 Bb7 6. c4 c5 7. Bg5 cxd4 8. Qxd4 Nc6 9. Qf4 Be7 10. Nbd2 O-O 11. O-O h6 12. Bxf6 Bxf6 13. Ne4 Bxb2 14. Rab1 Bf6 15. Nxf6+ Qxf6 16. Qxf6 { Fernández,J (2042)-Mende,I (2261) ICCF 2007 1/2-1/2 (27)}) 5. a4 (5. e4 Bb7 6. e5 Nd5 7. Bg2 c5 8. dxc5 (8. O-O Nc6 9. dxc5 Bxc5 10. a4 Ncb4 11. Qe2 O-O 12. c3 Nc6 13. Nbd2 Qb6 14. Ne4 Be7 15. Rd1 Qc7 16. Bf4 Nxf4 17. gxf4 Na5 18. Nd4 f5 19. exf6 Bxf6 {Szymanski,R (2325)-Palmateer,C (2065) ICCF 2010 1/2-1/2 (43)} ) 8... Bxc5 9. O-O d6 10. exd6 Bxd6 11. Na3 Be7 12. Rd1 O-O 13. c4 bxc4 14. Nxc4 Nc6 15. Qb3 Qc7 16. Bg5 Bc5 {Dedina,M (2262)-Höppenstein,M (2282) ICCF 2014 1/2-1/2 (28)}) 5... b4 6. e4 Bb7 7. e5 Nd5 8. Bg2 c5 9. dxc5 Bxc5 10. O-O d6 11. Bg5 Qc7 12. exd6 Bxd6 13. c4 Nf6 14. Rd1 Be7 15. Bf4 Qc6 {Yakushev,V (2454)-Trivedi,K ICCF 2006 1-0}) (4. Bg5 Bb7 5. Nbd2 Be7 6. Bg2 (6. e3 a6 7. c3 c5 8. Bd3 d6 9. a4 c4 10. Be2 Nbd7 11. O-O O-O 12. b3 d5 13. Qb1 Bc6 14. axb5 axb5 15. Rxa8 Bxa8 16. bxc4 bxc4 17. Qc2 h6 {Löschnauer,R (2460)-Ménétrier, M (2576) ICCF 2017 1/2-1/2 (25)}) 6... c5 7. dxc5 Na6 8. e4 h6 9. Be3 O-O 10. e5 Nd5 11. Bd4 Nxc5 12. O-O Rc8 13. Re1 Qc7 14. Rc1 a5 15. a3 Rfd8 {Kaliev,K (2222)-Walczak,T (2153) ICCF 2016 1/2-1/2 (62)}) (4. a3 a6 5. Bg2 Bb7 6. O-O Nc6 7. Ne5 d5 8. c4 bxc4 9. Qa4 Bd6 10. Nxc4 O-O 11. Nxd6 cxd6 12. Nc3 Qb6 13. Bf4 Rfd8 14. Rfd1 h6 15. Rd3 Rac8 {Michiels,A (1869)-Souply,Y (1808) ICCF 2012 1/2-1/2 (28)}) (4. e3 a6 5. Bg2 Bb7 6. O-O d5 7. a4 Nbd7 8. Nbd2 c5 9. Ne5 Nxe5 10. dxe5 Nd7 11. b3 Be7 12. c4 O-O 13. cxd5 Bxd5 {1/2-1/2 (13) Jones,B (2342) -Schmitz,A (2363) ICCF 2017}) (4. Bg2 Bb7 5. O-O (5. Bg5 c5 (5... d5 6. Nbd2 ( 6. O-O Nbd7 7. Nbd2 c5 8. c3 Be7 9. a4 b4 10. cxb4 cxb4 11. Nb3 O-O 12. Ne5 h6 13. Nxd7 Nxd7 14. Bxe7 Qxe7 15. Qd2 Rfc8 16. Rfc1 Qd6 17. e3 Ba6 {Gunkel,W (2349)-Rimkus,B (2103) ICCF 2017 1/2-1/2 (34)}) (6. a3 Nbd7 7. O-O c5 8. c3 Bd6 9. e3 O-O 10. Nbd2 h6 11. Bxf6 Nxf6 12. b4 c4 13. a4 a5 14. bxa5 Qxa5 15. axb5 Qxc3 16. Qc1 Bb4 17. Rb1 {Korab,B (1742)-Culbert,J (1945) ICCF 2017 0-1 (28)}) 6... Be7 7. O-O Nbd7 8. c3 (8. Re1 c5 9. Rc1 O-O 10. c3 h6 11. Bxf6 Nxf6 12. Qc2 Qb6 13. dxc5 Bxc5 14. e3 Rfe8 15. Nb3 Bd6 16. Red1 Rac8 17. a3 e5 {Lopes, D-Kawagoe,T ICCF 2010 0-1 (64)}) 8... a5 9. a3 (9. a4 b4 10. cxb4 Bxb4 11. Ne5 h6 12. Bf4 Nxe5 13. Bxe5 O-O 14. Rc1 c6 15. Bxf6 Qxf6 16. Nb3 e5 17. Nc5 Bxc5 18. Rxc5 {Gmür,A (2406)-Mokrys,C (2527) ICCF 2008 0-1 (27)}) 9... c5 10. Ne5 O-O 11. Nxd7 Nxd7 12. Bxe7 Qxe7 13. Re1 Rfd8 14. Nb3 cxd4 15. cxd4 a4 16. Nc1 Nb6 17. Nd3 {Silva,M (2258)-Voiculescu,C (2422) ICCF 2021}) 6. c3 (6. e3 cxd4 7. exd4 Be7 8. O-O h6 9. Bf4 O-O 10. Nbd2 d6 11. c3 Nd5 12. Be3 Nd7 13. Re1 N7b6 14. Qe2 Qd7 15. Nf1 a5 16. a3 Rfc8 17. h3 b4 {Carrillo Carrillo,M (1772) -Pérez López,A (2266) ICCF 2016 0-1 (29)}) 6... cxd4 7. Bxf6 gxf6 8. cxd4 d5 9. O-O Nd7 10. Qd3 (10. Nbd2 Qb6 11. Nb3 a5 12. Nc1 Bd6 13. a3 O-O 14. Nd3 Rfc8 15. Qd2 b4 16. axb4 Bxb4 17. Nxb4 Qxb4 18. Rfc1 Qxd2 19. Nxd2 Ba6 20. Bf1 Rxc1 21. Rxc1 a4 {Shustov,B (2325)-Romm,M (2465) ICCF 2016 1/2-1/2 (27)}) 10... Qb6 11. Nbd2 Be7 12. Rac1 O-O 13. Rc2 Rac8 14. Rfc1 Rxc2 15. Rxc2 Rc8 16. Rxc8+ Bxc8 {Sterud,E-Nesis,G ICCF 1984 1/2-1/2}) (5. a3 a6 (5... Nc6 6. Nc3 a6 7. Bf4 d5 8. b4 Bd6 9. Ne5 O-O 10. Qd2 Bxe5 11. dxe5 Ng4 12. O-O Ngxe5 13. Bxe5 Nxe5 14. f4 Nc4 15. Qd4 Qd6 16. Rfd1 Rfd8 17. h4 {Giessing,K (1513)-Zuna,A (1731) ICCF 2014 0-1 (26)}) 6. Nc3 c5 7. e3 Be7 8. O-O Ne4 9. Bd2 c4 10. Ne1 Nxd2 11. Bxb7 Ra7 12. Qxd2 Rxb7 13. f4 O-O 14. Nf3 b4 15. axb4 Bxb4 16. b3 d5 {Giessing, K (1520)-Räisänen,T (1428) ICCF 2016 1/2-1/2 (87)}) (5. Qd3 a6 6. Nbd2 c5 7. c3 d5 8. O-O Nbd7 9. a4 Bd6 10. Qc2 O-O 11. axb5 axb5 12. Rxa8 Qxa8 13. dxc5 Nxc5 14. Nd4 Qa6 15. N2b3 Rc8 16. Nxc5 Bxc5 {Kozlov,A (2260)-Mamrukov,D (2201) ICCF 2013 1/2-1/2 (38)}) (5. Nc3 a6 6. O-O Be7 7. a3 d6 8. Bg5 Nbd7 9. e3 c5 10. Ne2 O-O 11. c3 a5 12. Nf4 h6 13. Bxf6 Nxf6 14. dxc5 dxc5 15. Ne5 Bxg2 16. Kxg2 Qc7 {Galmés Diaz-Plaja,A-McNamara,G ICCF 2012 0-1 (36)}) 5... c5 (5... d5 6. c3 (6. a4 b4 7. c4 (7. a5 c5 8. c3 a6 (8... Na6 9. Ne5 (9. cxb4 Nxb4 10. Bd2 Na6 11. dxc5 Bxc5 12. b4 Be7 13. Qa4+ Qd7 14. Qxd7+ Nxd7 15. Na3 O-O 16. b5 Nac5 17. a6 Bc8 18. Nd4 Re8 19. Nc6 Bf8 20. Rfb1 Nf6 {Blondel,F (1776)-Harding, T (2356) ICCF 2017 1/2-1/2 (52)}) 9... Rc8 10. Bg5 Be7 11. cxb4 Nxb4 12. Qa4+ Nc6 13. dxc5 Bxc5 14. Rc1 O-O 15. Rxc5 Nxe5 16. Rxc8 Qxc8 17. a6 Ba8 18. Na3 Qb8 19. Qb5 Nc6 20. Bf4 {De Toledo,C (2296)-Vecek,M (2164) ICCF 2010 1-0 (25)}) 9. dxc5 Bxc5 10. cxb4 Bd6 11. Qa4+ (11. Bd2 O-O 12. Qb3 Ne4 13. Bc3 Nc6 14. Ne1 Rb8 15. Bxe4 dxe4 16. Nc2 Ne7 17. Rd1 Bd5 18. Qa4 f5 19. Be1 f4 20. Nc3 e3 21. Qa3 Qe8 22. f3 fxg3 {Pichushkin,V (2261)-Pecis,G (2351) ICCF 2015 0-1 (55)}) 11... Nc6 12. Bd2 O-O 13. Rc1 Na7 14. Nd4 Rb8 15. Qb3 Qd7 16. Nc3 e5 17. Nc2 d4 18. Nd5 Bxd5 {Kasparavicius,L (2125)-Kucinskas,S (2272) ICCF 2009 0-1 (31)}) ( 7. Ne5 Nbd7 8. c4 bxc3 9. Nxc3 Nxe5 10. dxe5 Nd7 11. e4 c6 12. exd5 cxd5 13. Nb5 Nxe5 14. Bf4 a6 15. Bxe5 axb5 16. axb5 f6 17. Rxa8 Bxa8 18. Bh3 Kf7 { Chazalette,J (2316)-Palm,W (2318) ICCF 2012 1-0 (47)}) 7... bxc3 (7... c5 8. Bg5 (8. Nbd2 Nbd7 9. Re1 (9. cxd5 Bxd5 10. Re1 cxd4 11. Nxd4 Bxg2 12. Kxg2 Rc8 13. a5 Nc5 14. N2b3 Qd7 15. Bd2 e5 16. Nxc5 Bxc5 17. Nb3 Bxf2 18. Kxf2 Qh3 19. Rh1 O-O 20. Rc1 h5 {Ilzig,G (2298)-Davidov,D (2253) ICCF 2019 1/2-1/2 (30)}) 9... cxd4 10. Nxd4 Nc5 11. a5 Rc8 12. a6 Ba8 13. cxd5 Bxd5 (13... Nxd5 14. N2b3 Be7 15. e4 Nf6 16. e5 Nd5 17. Qg4 Kf8 18. Nxc5 Rxc5 19. Rd1 Qb6 (19... Qc8 20. Bg5 Bxg5 21. Qxg5 h6 22. Qd2 Ke7 23. Rac1 Rd8 24. Nb5 Rxc1 25. Qxc1 f6 26. exf6+ Kxf6 27. Re1 Qxc1 28. Rxc1 b3 29. Rc4 Nb6 30. Rf4+ Ke7 31. Bb7 {Moegito, A-Garau,B (2311) ICCF 2017 1-0 (59)}) 20. Nb3 Rc2 21. Bd2 Rxb2 22. Na5 h5 23. Qe4 Rxd2 24. Rxd2 g6 25. Nb7 {Díaz Rubí,F (2296)-Titzhoff,F (2281) ICCF 2020 1-0 (42)}) 14. e4 Ba8 15. Nc4 Be7 16. Nb5 Qxd1 17. Rxd1 Ncxe4 18. b3 O-O (18... Rc5 19. Nxa7 Ng4 20. Nb6 Nexf2 21. Rd2 Ne4 22. Bxe4 Bxe4 23. Nac8 Rf5 24. Nxe7 Kxe7 25. Rd7+ Kf6 26. Rd4 Nf2 27. h4 Nh3+ 28. Kh2 Nf2 29. a7 Kg6 30. Bf4 { Gauna,J (2206)-de Paz González,Y (2152) ICCF 2020 1/2-1/2 (34)}) 19. Be3 Nc3 { Reed,A (2238)-Mansson,J (2235) ICCF 2019 1/2-1/2 (69)}) 8... Nbd7 9. Ne5 Be7 10. cxd5 (10. Nxd7 Qxd7 (10... Nxd7 11. Bxe7 Qxe7 12. Nd2 Rd8 13. cxd5 Bxd5 14. Bxd5 exd5 15. dxc5 Nxc5 16. Nb3 Nxb3 17. Qxb3 O-O 18. Rfd1 Qxe2 19. Qxb4 Rb8 20. Qd2 Rxb2 21. Qxe2 Rxe2 22. Rxd5 {Silva,M (2360)-Hunger,H (2434) ICCF 2011 1/2-1/2}) 11. dxc5 Rc8 12. Nd2 Rxc5 13. cxd5 Bxd5 14. e4 Ba8 15. Bxf6 Bxf6 16. e5 Bxg2 17. exf6 Bb7 18. fxg7 Rg8 19. a5 Rxg7 20. a6 Ba8 21. Nb3 Qc6 {Borisovs, L (2368)-Mielczarek,D (2311) ICCF 2011 1/2-1/2}) 10... Bxd5 11. Bxd5 Nxd5 12. Nc6 Qb6 13. Nxe7 Nxe7 14. dxc5 Qxc5 15. Be3 Qh5 (15... Qc6 16. Qd3 Qd5 17. Nd2 Qxd3 18. exd3 Nd5 19. Bd4 O-O 20. f4 Rfd8 21. Kf2 f6 22. Ke2 a5 23. Nb3 Kf7 24. Rac1 h5 25. Rc6 Rdc8 26. Rxc8 Rxc8 27. Kd2 {Neumann,E (1887)-Dimitrios,E (2227) ICCF 2021 1/2-1/2 (31)}) 16. f3 a5 (16... Ne5 17. Qb3 a5 18. Nd2 O-O 19. Rac1 Rfc8 20. Rfd1 h6 21. Ne4 Nd5 22. Rxc8+ Rxc8 23. Bd4 Nd7 24. Qd3 N5f6 25. Qb5 Qxb5 26. Nxf6+ gxf6 27. axb5 Rb8 28. Ba7 {Manarin,F (1986)-Macs,O (2107) ICCF 2020 1/2-1/2 (31)}) (16... Nd5 17. Bf2 O-O 18. Nd2 Ne5 19. Qb3 a5 20. Rfd1 Rac8 21. Rac1 f5 22. Bd4 Nc6 23. Bc5 Rfd8 24. Nc4 Qg5 25. Ne3 f4 26. Nxd5 Rxd5 27. Kg2 fxg3 28. Be3 {Zuñiga,I (2200)-Carlsen,T (1907) ICCF 2017 1-0 (31)}) 17. Nd2 O-O 18. Rc1 Rfd8 19. Qb3 h6 20. Nc4 Rac8 21. Bf2 Rc7 22. Rfd1 Rdc8 23. g4 Qg5 24. Bg3 Nc5 25. Qc2 b3 26. Qd2 Qxd2 27. Rxd2 Rd7 28. Rd6 Rxd6 29. Nxd6 Rc6 30. Rc4 f6 31. Nb5 Na6 32. Na3 Kf7 33. Bf2 Rd6 34. Rd4 Rc6 35. Rc4 Rd6 36. Rd4 Rc6 37. Rc4 Rd6 {1/2-1/2 (37) Copsey,A (2264)-Moujan,P (2259) ICCF 2020 1 d4 Nf6 2 Nf3 e6: Torre,-London and Colle Systems}) 8. Nxc3 a5 (8... Nc6 9. Bf4 (9. a5 Rb8 10. Ne5 Ba8 11. Bf4 Nxe5 12. Bxe5 (12. dxe5 Nd7 13. e4 c6 14. Na4 Qxa5 15. Be3 Qd8 16. Bxa7 Rb7 17. Be3 Rb8 18. Qc2 Be7 19. Nc5 O-O 20. Nxd7 Qxd7 21. Ra7 Rb7 22. Ra4 Rfb8 23. Rfa1 Qe8 {Gullotto,V (2298)-Matsukevich,V (2273) ICCF 2020 1/2-1/2 (35)}) 12... Rxb2 13. Qa4+ c6 14. Rfb1 Rxb1+ 15. Rxb1 Bd6 16. Bxd6 Qxd6 17. e4 dxe4 18. Nxe4 Nxe4 19. Bxe4 O-O 20. Qc4 g6 {Au Cardero,R (2350) -Frotscher,T (2376) ICCF 2019 1/2-1/2 (50)}) (9. Ne5 Rb8 10. Bf4 Nxe5 11. dxe5 Nd7 12. e4 c6 13. exd5 cxd5 14. Re1 Be7 15. Nb5 O-O 16. Nxa7 Bb4 17. Bd2 Qa5 18. Bxb4 Qxb4 19. b3 Nc5 20. Rb1 Qb6 {Sperhake,K (2495)-Bücker,J (2542) ICCF 2014 1/2-1/2 (28)}) 9... Bd6 10. Bg5 Be7 11. a5 Rb8 12. Qd2 O-O 13. Rfc1 Bd6 14. Bxf6 Qxf6 15. Na4 e5 16. Nxe5 Nxe5 17. dxe5 Bxe5 18. Ra3 Ba6 19. Bxd5 Rbd8 20. Rf3 {Bokar,J (2522)-Biedermann,T (2486) ICCF 2021 1/2-1/2 (33)}) (8... Be7 9. Bf4 O-O 10. Qb3 Qc8 11. Nb5 Ne8 12. Rac1 c6 13. Rfd1 Nd7 14. e4 dxe4 15. Nd2 Ndf6 16. Nc3 Bd6 17. Be3 Nd5 18. Ncxe4 Be7 19. Nc4 Rb8 20. Qc2 {Uryupin,I (2201)-Bratholm,P (2154) ICCF 2017 1-0 (51)}) (8... Bd6 9. Nb5 Nc6 10. Bd2 Ne4 11. Nxd6+ cxd6 12. b4 a6 13. Qc2 Qb6 14. Rfc1 O-O 15. Be1 Rfb8 16. Rab1 Nxd4 17. Nxd4 Qxd4 18. Qc7 h6 19. Qd7 Qf6 20. f3 {Leenders,C (2262)-Gromotka,H (2358) ICCF 2017 1/2-1/2 (48)}) 9. Ne5 Be7 10. Qb3 Ba6 11. Re1 O-O 12. e4 c6 13. exd5 cxd5 (13... Nxd5 14. Bd2 Ra7 15. Ne4 Rb7 16. Qd1 Qb6 17. Nc5 Bxc5 18. dxc5 Qxc5 19. Rc1 {Straka,Z (2569)-Freeman,M (2530) ICCF 2017 1/2-1/2 (35)} ( 19. Rb1 Nb4 20. Qg4 Qe7 21. b3 Rc8 22. Bc3 Qf8 23. Red1 h6 24. h4 Rbc7 25. Rb2 Rb7 26. Rbb1 Rbc7 27. Rd2 Rb7 28. Qf3 Nd5 29. Bxa5 Nd7 30. Nxd7 Rxd7 {Williams, T (2442)-Reinhart,K (2478) ICCF 2018 1/2-1/2 (83)})) 14. Be3 Ra7 15. Nb5 Rb7 16. Rec1 Bb4 17. Bf1 Ne4 {Szczepanski,Z (2473)-Kloster,J (2456) ICCF 2017 1/ 2-1/2 (50)}) (6. b3 c5 7. c4 bxc4 8. Ba3 (8. bxc4 dxc4 9. Bb2 (9. Nc3 Nbd7 10. Rb1 Bc6 11. Be3 Qa5 12. Qc2 Rc8 13. Rfd1 cxd4 14. Nxd4 Bxg2 15. Kxg2 Bc5 16. Ndb5 O-O 17. Bxc5 Rxc5 18. Nd6 Qa6 19. a4 Rc6 20. Ncb5 Nb6 {Kolarík,J (2227) -Kosar,Z ICCF 2009 1/2-1/2 (66)}) 9... cxd4 10. Bxd4 (10. Qa4+ Nbd7 11. Bxd4 Rc8 12. Rd1 Bc6 13. Qa6 Be7 14. Nc3 O-O 15. Rac1 Rc7 16. Nb5 Bxb5 17. Qxb5 Qc8 18. Ne5 Nxe5 19. Bxe5 Rc5 20. Qb2 Qa6 21. Bc3 Rb5 {Deforel,J (2348)-Córdoba,H (2568) ICCF 2005 0-1 (41)}) 10... Nbd7 11. Nbd2 Rc8 12. Rc1 Bc5 13. Nxc4 O-O 14. Nce5 Bxd4 15. Qxd4 Nxe5 16. Qxe5 Qb6 17. Rb1 Qa6 {Mogstad,O (2190) -Gramstad,R (2464) ICCF 2021}) 8... cxd4 9. Bxf8 Rxf8 10. Nxd4 Qb6 11. Nc3 Nbd7 12. bxc4 Nc5 13. Na4 Nxa4 14. Qxa4+ Ke7 15. Rab1 Qa6 16. Qb4+ {1-0 (16) Stensen,L (2159)-Løvås,R (1661) ICCF 2015}) (6. Nc3 b4 7. Na4 Nbd7 8. a3 (8. Bf4 c5 9. c3 bxc3 10. Nxc3 Rc8 11. Rc1 Be7 12. dxc5 Nxc5 13. b4 Ncd7 14. Qb3 O-O 15. Na4 h6 16. Be3 Rxc1 17. Rxc1 Qb8 18. Nc5 Rc8 19. Qa3 a6 {Lungu,I-Pekin, T (2238) ICCF 2017 1/2-1/2 (37)}) 8... a5 9. axb4 (9. Ne1 Bc6 10. c4 bxc3 11. Nxc3 Bd6 12. Nd3 O-O 13. Bg5 h6 14. Bd2 Bb7 15. Qc2 Ba6 16. Rfc1 Qb8 17. b4 Bxd3 18. Qxd3 axb4 19. axb4 Rxa1 20. Rxa1 Nb6 {Silva,M (2276)-Brock,W (2235) ICCF 2018 1/2-1/2 (25)}) 9... axb4 10. Be3 Bd6 11. Nc5 Bc6 12. Nd3 O-O 13. Nfe5 Bb5 14. Qd2 Ne4 15. Qe1 Rxa1 16. Qxa1 Qa8 17. Nxd7 Bxd7 {Maslakov,G (2285) -Pinchon,F (2325) ICCF 2015 1/2-1/2}) (6. Qd3 a6 (6... c6 7. Nbd2 Be7 8. e4 O-O 9. Re1 b4 10. c4 bxc3 11. bxc3 c5 12. exd5 Qxd5 13. c4 Qd6 14. Rb1 Bc6 15. Ba3 Qc7 16. Nb3 cxd4 17. Nbxd4 Bxa3 18. Qxa3 {Kappel,R (1820)-Moujan,P (1768) ICCF 2018 1-0 (55)}) 7. a4 (7. Bg5 Nbd7 (7... c5 8. a4 c4 9. Qe3 b4 10. Ne5 Ra7 11. f4 Be7 12. Nd2 O-O 13. Bh3 Nbd7 14. Ndf3 Ne4 15. c3 Nxg5 16. fxg5 Nxe5 17. dxe5 bxc3 18. bxc3 Ra8 19. Bg4 {Deforel,J (2228)-Rutkus,R (2201) ICCF 2015 0-1 (71)} ) 8. Ne5 Be7 9. Nxd7 Qxd7 10. Nd2 c5 11. dxc5 Bxc5 12. Bxf6 gxf6 13. Rfd1 Qc7 14. a4 Qb6 15. e3 O-O 16. Qe2 Be7 17. Qh5 bxa4 18. Nf3 a3 {Markic,V (2131) -Petcu,D ICCF 2007 1-0}) (7. b3 Nbd7 8. c4 c5 9. cxd5 Bxd5 10. Nc3 Bb7 11. Be3 cxd4 12. Bxd4 Ba3 13. Nb1 Be7 14. a4 bxa4 15. Rxa4 O-O 16. Nbd2 h6 17. Qb1 Qb8 18. Qb2 Bc6 {Dam,J (2118)-Dimitrios,E (2125) ICCF 2020 1/2-1/2 (31)}) 7... c5 ( 7... b4 8. c4 (8. Bf4 Bd6 9. Ne5 Nbd7 10. Qb3 O-O 11. c3 a5 12. cxb4 axb4 13. a5 Be7 14. Nd2 Nxe5 15. Bxe5 Ng4 16. Nf3 Nxe5 17. Nxe5 c5 18. dxc5 Bxc5 19. Qa4 Qe7 {Frost,E (1963)-Beltins,G (2032) ICCF 2009 0-1 (37)}) 8... bxc3 9. bxc3 c5 10. Bg5 Nbd7 11. Nbd2 Be7 12. Rfb1 Ra7 13. Ne5 O-O 14. Ndf3 h6 15. Bf4 a5 16. Ra2 Ba6 17. Qd2 Qc8 18. Qc2 Rb7 19. Rxb7 {Deforel,J (2192)-Mesquita Jr.,F (2308) ICCF 2016 0-1 (57)}) 8. dxc5 b4 9. c4 (9. Be3 Nbd7 10. Nbd2 Nxc5 11. Qd4 a5 12. c3 bxc3 13. Qxc3 Ba6 14. Bxc5 Rc8 15. Nb3 Ne4 16. Qe5 Nxc5 17. Nxc5 Rxc5 18. Rac1 Qd6 19. Rxc5 Qxe5 20. Nxe5 Bxc5 {Torgersen,T (1986)-Burgarth,U (2474) ICCF 2008 1/2-1/2}) 9... Nbd7 10. c6 Bxc6 11. Be3 Nc5 12. Bxc5 Bxc5 13. Ne5 Bb7 14. cxd5 exd5 15. Nd2 O-O 16. Nb3 Bb6 17. a5 Ba7 {Kirppo,R-Lokander,M (1747) ICCF 2014 1/2-1/2 (32)}) (6. Bf4 Be7 7. Qd3 O-O 8. a3 a6 9. c3 c5 10. Nbd2 Nbd7 11. h4 Rc8 12. Ne5 Nxe5 13. Bxe5 Nd7 14. Bf4 h6 15. Nf3 c4 16. Qc2 Nf6 17. Ne5 a5 {Percze,J (2515)-Gramstad,R (2468) ICCF 2020 1/2-1/2 (45)}) (6. a3 Bd6 7. Re1 {1-0 (7) Ellis,R-Bagur Cantallops,A ICCF 2009}) (6. Nbd2 a5 7. e3 Be7 8. Ne5 O-O 9. c4 bxc4 10. Ndxc4 c5 11. b3 Qc7 12. Nb2 Rc8 13. Na4 cxd4 14. exd4 Nc6 15. Bf4 Qd8 16. Rc1 Ba3 17. Nxc6 Bxc6 {Horie,T (1790)-Walsh,P (1550) ICCF 2017 0-1 (45)}) 6... Nbd7 (6... Bd6 7. a4 bxa4 8. Qxa4+ Nbd7 9. Nbd2 O-O 10. Nb3 Qc8 11. Na5 Ba6 12. Re1 Nb6 13. Qc2 c5 14. dxc5 Bxc5 15. Nb3 Bd6 16. Nbd4 Bb7 17. Bf4 Bxf4 18. gxf4 {Jensen,B (2203)-Chunga,J (2061) ICCF 2008 1/2-1/2 (26)}) 7. a4 (7. Nbd2 a5 (7... c5 8. a4 b4 9. cxb4 cxb4 10. b3 Rc8 11. Bb2 Bd6 12. Rc1 O-O 13. Rxc8 Qxc8 14. Qb1 Qb8 15. Rc1 Rc8 16. Rxc8+ Qxc8 17. Ne5 a5 18. Qc1 Qxc1+ 19. Bxc1 {Shannon,P (1934)-Walton,J (2090) ICCF 2019 1-0}) 8. a4 b4 9. cxb4 Bxb4 10. Nb3 Ne4 11. Be3 c5 12. Nxc5 Ndxc5 13. dxc5 Nxc5 14. Nd4 O-O 15. Nc2 Rc8 16. Nxb4 axb4 17. Rc1 Qa5 18. b3 Ba6 {Dam,J (2070)-Dalen,M ICCF 2019 1/2-1/2}) (7. Bf4 c5 8. Nbd2 (8. a4 b4 9. cxb4 cxb4 10. Qd3 Be7 11. Rc1 Rc8 12. Nbd2 a6 13. Nb3 O-O 14. Rxc8 Qxc8 15. Na5 Qa8 16. Rc1 Rc8 17. Qd1 { 1/2-1/2 (17) Dam,J (2070)-Bredenhof,B (2059) ICCF 2019}) 8... a5 (8... Be7 9. a4 (9. Ne5 O-O 10. Nxd7 Nxd7 11. Rc1 Rc8 12. e4 dxe4 13. Bxe4 Qb6 14. Bxb7 Qxb7 15. dxc5 Nxc5 16. Nb3 Na4 17. Qe2 Rfd8 18. Rfd1 a6 19. Rxd8+ Rxd8 20. Be3 Bf6 { Turner,L (1872)-Löschnauer,E (2380) ICCF 2016 1/2-1/2 (40)}) 9... b4 10. cxb4 cxb4 11. Rc1 Rc8 12. Rxc8 Qxc8 13. Qb1 O-O 14. Rc1 Qa8 15. Rc2 Rc8 16. Qc1 h6 17. h4 Rxc2 18. Qxc2 Qd8 19. Nb3 Ne4 20. Ne5 {Mego,P (2311)-Miciak,E (2367) ICCF 2009 1/2-1/2 (31)}) 9. Ne5 Be7 10. Nxd7 Qxd7 (10... Nxd7 11. e4 cxd4 12. exd5 dxc3 13. dxe6 Bxg2 14. exd7+ Qxd7 15. Kxg2 cxd2 16. Qf3 Rd8 17. Rfd1 O-O 18. Rxd2 Qc8 19. Re2 Qd7 20. h4 Bf6 21. Rc1 Qd5 22. b3 {Köntges,M (2301) -Pinho,J (2386) ICCF 2012 1-0 (41)}) 11. Nb3 c4 12. Nc5 Bxc5 (12... Qc8 13. Nxb7 Qxb7 14. f3 O-O 15. e4 b4 16. Qa4 Ra6 17. Rae1 Rb6 18. Re2 Rb5 19. Rfe1 h6 20. Rc1 {1/2-1/2 (20) Köntges,M (2324)-Oliynyk,V (2228) ICCF 2014}) 13. dxc5 O-O 14. b3 cxb3 15. axb3 a4 16. b4 Bc6 17. Qd4 Qb7 18. Rfe1 {1/2-1/2 (18) Hernandez Fernandez,N (2303)-Bus,T (2253) ICCF 2017}) (7. Bg5 h6 (7... c5 8. Nbd2 (8. a4 b4 9. a5 Ba6 10. Re1 Be7 11. Bxf6 Bxf6 12. cxb4 cxb4 13. Qa4 Rb8 14. e3 O-O 15. Nbd2 e5 16. Rec1 e4 17. Ne1 Be7 18. Qc6 Bb7 19. Qc7 a6 { Schiller,W (2249)-Hauser,J (2303) ICCF 2008 1-0 (28)}) 8... Be7 9. a4 b4 10. cxb4 cxb4 11. Nb3 h6 12. Bxf6 Bxf6 13. Qd3 a5 14. Rfc1 Qb6 15. Qb5 Qxb5 16. axb5 a4 17. Rc7 Bc8 18. Nc1 Kd8 19. Rc2 {Köhler,J (2161)-Vozda,J (2451) ICCF 2011 0-1 (31)}) 8. Bxf6 Nxf6 9. Qd3 a6 10. b4 Nd7 11. a4 bxa4 12. Rxa4 c6 13. Ra5 Bd6 14. Nbd2 Bc7 15. Ra2 a5 16. Nb3 axb4 17. Rxa8 Bxa8 18. cxb4 O-O { Hladecek,M (2416)-Bucek,J (2412) ICCF 2010 1/2-1/2 (46)}) 7... b4 8. Bf4 (8. cxb4 Bxb4 9. Bd2 Bd6 (9... c5 10. Bxb4 cxb4 11. Qd3 O-O 12. Nbd2 a5 13. Rfc1 Ba6 14. Qe3 Rc8 15. Nb3 Qb6 16. Nc5 Qa7 17. Rc2 Rc7 18. Rac1 Rfc8 19. Ne5 Nxe5 20. Qxe5 Nd7 21. Qd6 {Myakonikikh,D (2321)-Chamaev,A (2126) ICCF 2011 1/2-1/2 (39)}) 10. Nc3 a6 11. Rb1 c5 12. dxc5 Nxc5 13. Bg5 O-O 14. b4 Ncd7 15. b5 Qc7 ( 15... Rc8 16. bxa6 Bxa6 17. Nb5 Be7 18. Nfd4 Ne5 19. Qb3 Bc5 20. Rfd1 h6 21. Bd2 Bxb5 22. Nxb5 Nfg4 23. e3 Qf6 24. Be1 Nf3+ 25. Bxf3 Qxf3 26. Nd4 {1/2-1/2 (26) Gyger,T (2393)-Salzmann,S (2274) ICCF 2009}) 16. Qb3 Rfc8 17. Rfc1 Bc5 18. Bxf6 {1/2-1/2 (18) Deforel,J (2251)-Sánchez,M (2358) ICCF 2007}) 8... a5 (8... Ba6 9. Qc2 c5 10. cxb4 cxb4 11. Rc1 Be7 12. e3 O-O 13. Nbd2 Rc8 14. Bc7 Qe8 15. Qc6 Nb6 16. Ne5 Qxc6 17. Rxc6 Nfd7 18. Nxd7 Nxd7 19. Rac1 Nb6 20. b3 {Simeonov, L (2279)-Gavrijski,D (2033) ICCF 2017 1-0 (65)}) 9. Nbd2 c5 (9... Be7 10. Nb3 bxc3 (10... c6 11. cxb4 Bxb4 12. Rc1 O-O 13. Ne1 Qb6 14. Nd3 Be7 15. Nbc5 Rfc8 16. Qc2 Ba6 17. Rfd1 Nxc5 18. Nxc5 Bc4 19. e4 Bxc5 20. dxc5 Qb3 21. Rd4 { Deforel,J (2038)-Milto,G ICCF 2017 0-1 (52)}) 11. bxc3 O-O 12. Qc2 c5 13. Rab1 Ba6 14. Ne5 Rc8 15. Nxd7 Nxd7 16. Qa2 Bc4 17. Qc2 h6 18. Bf3 cxd4 19. cxd4 Bb4 20. Rfc1 Re8 21. Qd1 {Deforel,J (2038)-Barclay,A (2132) ICCF 2017 0-1 (65)}) ( 9... bxc3 10. bxc3 Be7 (10... Bd6 11. Qb3 Rb8 12. Ne5 O-O 13. Qc2 Bxe5 14. dxe5 Nh5 15. Rfb1 Nxf4 16. gxf4 Ba6 17. Rxb8 Nxb8 18. c4 Nc6 19. Qd1 Qh4 20. cxd5 exd5 21. Nf3 Qxf4 22. Qxd5 {Emrich,E (2347)-Gabel,A (2344) ICCF 2018 1/2-1/2 (31)}) 11. Rb1 Ba6 12. Re1 O-O 13. e4 Bd3 14. exd5 Nxd5 15. Rb3 Ra6 16. Ne5 Nxf4 17. gxf4 Nxe5 18. fxe5 Qd7 19. Ne4 Bc4 20. Rb7 Bd5 21. Rb5 {Dam,J (2118) -Gray,G (2162) ICCF 2020 1-0 (27)}) 10. cxb4 (10. Rc1 Be7 11. dxc5 {1-0 (11) Lagergren,H (1521)-Chlewicki,G (1886) ICCF 2013} (11. Nb3 c4 12. Nbd2 Nh5 13. Be3 b3 14. Ra1 Qc7 15. Bg5 Nhf6 16. Bf4 Qc8 17. Bg5 h6 18. Bxf6 gxf6 19. e3 Nb6 20. Qe2 Bc6 21. e4 dxe4 22. Nxe4 f5 {Steinman,A-Szwaj,J ICCF 2007 0-1 (72)})) ( 10. Ne5 Be7 11. cxb4 axb4 12. Nxd7 Nxd7 13. e4 O-O 14. Rc1 Re8 15. Re1 h6 16. exd5 Bxd5 17. Bxd5 exd5 18. Qf3 Bf6 19. Qxd5 Bxd4 20. Nf3 Nf8 21. Qxd8 Rexd8 { Korabliov,A (2414)-Kurylo,R (2248) ICCF 2011 1/2-1/2 (50)}) 10... axb4 11. Rc1 Be7 (11... Rc8 12. dxc5 Rxc5 13. Ne5 Be7 14. Nb3 Rxc1 15. Qxc1 Nxe5 16. Bxe5 O-O 17. Nc5 Ba8 18. Nd3 Qd7 19. b3 Ne4 20. Bd4 Rc8 21. Qe3 Rc7 {Taksrud,V (2092)-Sikorski,R ICCF 2017 1/2-1/2 (57)}) 12. dxc5 Nxc5 13. Nb3 Nxa4 14. Rc7 Bc8 15. Qc2 O-O 16. Nbd4 b3 17. Qxb3 {Leiner,R (2349)-Kostanjsek,Z (2311) ICCF 2017 1/2-1/2 (25)}) (5... Be7 6. Bg5 (6. a4 b4 7. c4 a5 8. Nbd2 O-O 9. Qc2 c5 10. e3 d5 11. b3 Na6 12. Bb2 dxc4 13. Nxc4 Bd5 14. Rfd1 Bxc4 15. Qxc4 Qd5 16. Ne5 Qxc4 17. Nxc4 Nd5 {Shannon,P (1934)-Thomas,G (1867) ICCF 2017 1-0 (31)}) ( 6. Nc3 b4 7. Na4 d6 8. a3 a5 9. c4 O-O 10. Qb3 Na6 11. Bg5 Ne4 12. Be3 Qe8 13. axb4 axb4 14. Nc3 Nf6 15. Na2 Be4 16. Nc1 Qd7 17. Nd3 c5 {Peñafiel López,J (2290)-Santamaría Pérez,T (2303) ICCF 2005 1-0 (57)}) (6. c3 O-O 7. a4 b4 8. Nbd2 Na6 9. Ne5 Bxg2 10. Kxg2 Qc8 11. Ndf3 Qb7 12. Bg5 d6 13. Bxf6 Bxf6 14. Nd7 Rfe8 15. Nxf6+ gxf6 16. Qd3 Rad8 17. Rfd1 d5 {Thorn Leeson,J (2143)-Etmans,M (1960) ICCF 2008 1-0 (27)}) (6. Ne5 Bxg2 7. Kxg2 d6 8. Nd3 c5 9. dxc5 dxc5 10. f3 Nc6 11. Be3 Nd4 12. Bxd4 cxd4 13. Nd2 Nd5 14. Qe1 Ne3+ 15. Kh1 Nxf1 16. Qxf1 Rc8 17. Rc1 a5 {Dumont,G (1460)-Nguyen,M (1865) ICCF 2020 0-1 (25)}) 6... O-O ( 6... d5 7. Qd3 c6 (7... O-O 8. Nbd2 (8. Qxb5 Ba6 9. Qa4 Bxe2 10. Re1 Bxf3 11. Bxf3 Nbd7 12. Nd2 c5 13. c3 cxd4 14. cxd4 h6 15. Bf4 Qb6 16. Nb3 Rfc8 17. Rec1 Nf8 18. Qa5 Ng6 19. Rxc8+ Rxc8 {Krause,M (2129)-Kraujûnas,V (1973) ICCF 2011 1-0 (60)}) 8... h6 9. Bxf6 Bxf6 10. Nb3 c6 11. Nc5 Qc7 12. a4 Nd7 13. Nxb7 Qxb7 14. axb5 Qxb5 15. Qxb5 cxb5 16. Ra5 Rfc8 17. c3 a6 18. Rfa1 b4 19. cxb4 { Dam,J (2118)-Rogers,B (2065) ICCF 2020 1/2-1/2}) (7... a6 8. a4 b4 9. Nbd2 c5 10. c4 bxc3 11. bxc3 O-O 12. Ne5 h6 13. Rab1 Ra7 14. Be3 c4 15. Qc2 Ba8 16. f4 Nbd7 17. f5 exf5 18. Qxf5 Nb6 19. Qc2 {Fiesel,H (1724)-Ottesen,S (2354) ICCF 2017 1/2-1/2 (32)}) 8. Nbd2 O-O 9. Ne5 h6 10. Be3 a5 11. Ndf3 Nbd7 12. a4 b4 13. Rfc1 c5 14. c4 bxc3 15. bxc3 Ba6 16. Qd1 Rc8 17. Bf4 Ne4 18. Nxd7 {Deforel, J (2038)-Desmarais,S (2193) ICCF 2017 0-1 (48)}) (6... a6 7. a4 b4 8. c3 O-O 9. Nbd2 bxc3 (9... Nc6 10. Ne1 Rb8 11. Nd3 a5 12. Qc2 h6 13. Bxf6 Bxf6 14. Nb3 bxc3 15. bxc3 d6 16. Rfb1 Qe8 17. Nd2 Qd7 18. Ra3 Ba6 19. Ne4 Rxb1+ 20. Qxb1 Be7 21. Nd2 {Palladino,M (2148)-Haller,P (2102) ICCF 2012 0-1 (59)}) 10. bxc3 Ra7 11. Qc2 c5 12. Rfc1 h6 13. Bxf6 Bxf6 14. Ne4 Be7 15. Rab1 Qc7 16. Nxc5 Bxf3 17. Bxf3 Bxc5 18. dxc5 {Ellis,J (2230)-Simal Moreira,L (2417) ICCF 2020 1/2-1/ 2 (33)}) (6... d6 7. Qd3 a6 8. Nbd2 Nbd7 9. e4 h6 10. Bxf6 Bxf6 11. a4 c6 12. Rfe1 Qc7 13. axb5 axb5 14. Rxa8+ Bxa8 15. e5 dxe5 16. Nxe5 O-O 17. Ng4 c5 18. Bxa8 {Taksrud,V (2139)-Raijmaekers,C (2283) ICCF 2019 1/2-1/2}) 7. Qd3 (7. c3 a6 8. Nbd2 d6 9. Bxf6 Bxf6 10. Qc2 Nc6 11. b4 g6 12. a4 Qd7 13. e3 Rab8 14. axb5 axb5 15. Nb3 Bg7 16. Rfe1 f5 17. Nfd2 Ne7 18. Bxb7 Rxb7 {Jones,B (2119) -Araboga,M (2101) ICCF 2009 1/2-1/2}) 7... Be4 (7... a6 8. Nbd2 Nc6 (8... d6 9. a4 b4 10. Bxf6 Bxf6 11. Ng5 Bxg5 12. Bxb7 Ra7 13. Bg2 Bxd2 14. Qxd2 c5 15. Rfd1 cxd4 16. Qxb4 d5 17. Qxd4 Rc7 18. e4 Rc4 19. Qd3 Qc7 20. exd5 {Crump,J-Rough,R (1893) ICCF 2010 1-0}) 9. Bxf6 Bxf6 10. a4 b4 11. Ne4 Be7 12. Nc5 Bxc5 13. dxc5 Qe7 14. Qe3 Qf6 15. Rad1 Rfd8 16. Nd4 Rac8 17. Nxc6 Bxc6 18. Rd4 a5 19. c3 { Bucsa,I-Vieito Soria,L (2058) ICCF 2008 1-0 (45)}) 8. Qe3 d5 (8... Bc6 9. Bxf6 Bxf6 10. Nbd2 d6 11. Qd3 Re8 12. c4 bxc4 13. Qxc4 Bb7 14. Rfc1 Ba6 15. Qc2 c6 16. e4 Qb6 17. e5 dxe5 18. dxe5 Be7 19. Ne4 Rd8 20. Nc5 {Gmür,A (2409) -Kucinskas,S (2190) ICCF 2008 1-0 (83)}) 9. Nbd2 Bxc2 10. Rfc1 Bf5 11. Nh4 Bg4 12. h3 Bh5 13. Qd3 c6 14. g4 Nfd7 15. Bxe7 Qxe7 16. Ndf3 Bg6 17. Nxg6 {Hechl,G (2218)-Kucinskas,S (2292) ICCF 2010 1/2-1/2 (33)}) 6. a4 (6. Bg5 cxd4 (6... Be7 7. dxc5 Bxc5 (7... Na6 8. Nc3 Nxc5 9. Nxb5 Qb6 10. a4 a6 11. Na3 d5 12. Qd4 Rc8 13. Be3 Qc7 14. Bf4 Qd8 15. Ne5 O-O 16. Rfd1 Ba8 17. Be3 h6 18. Nd3 Qd7 19. b3 {Scheffknecht,P (2029)-Vegjeleki,A (2252) ICCF 2013 0-1 (49)}) (7... O-O 8. Qd4 a6 9. c3 Nc6 10. Qe3 Nd5 11. Qd2 f6 12. Be3 Qc8 13. Bd4 Rd8 14. e4 Nc7 15. Qe2 a5 16. Na3 e5 17. Be3 Ba6 18. Rfc1 Kh8 19. Bh3 {Stensen,L (2105)-Broadway,D (2066) ICCF 2020 1/2-1/2 (45)}) 8. Qd3 a6 9. c4 (9. a4 b4 10. Nbd2 d5 11. c4 bxc3 12. bxc3 h6 13. Bxf6 Qxf6 14. Rab1 Qe7 15. c4 O-O 16. Rfc1 dxc4 17. Qxc4 Rc8 18. Qh4 Qxh4 19. gxh4 Ra7 20. Ne1 Bxg2 {Muñoz Portugal,G (2248)-Moreno,A (2259) ICCF 2007 1/2-1/2 (62)}) 9... bxc4 (9... Bc6 10. Nbd2 O-O 11. cxb5 axb5 12. Qc2 Be7 13. Bxf6 Bxf6 14. Ng5 Bxg5 15. e3 Qb6 16. Rfc1 Bxg2 17. Kxg2 Qb7+ 18. Nf3 Ra4 19. Qd3 Bf6 20. Rc5 b4 21. Qb3 {Tucci,A (2426)-Janisch,M (2447) ICCF 2020 0-1 (26)}) 10. Qxc4 Be7 (10... d6 11. b4 Bb6 12. Qf4 Nc6 13. Nc3 h6 14. Bh4 d5 15. Rab1 Ba7 16. b5 axb5 17. Nxb5 O-O 18. Nxa7 Rxa7 19. Rfc1 Ba8 20. Rb2 Qc7 21. Qxc7 Rxc7 22. Bxf6 {Gates,J (2278)-Gonzalez-Gigato,J (2237) ICCF 2020 1/2-1/2 (51)}) 11. Nc3 O-O 12. Rfd1 h6 13. Qb3 Bc6 14. Bf4 d6 15. Rac1 Ra7 16. Ne1 Rb7 17. Qc2 Bxg2 18. Kxg2 {Whaley,M (2383)-de la Rosa Solórzano,J (2399) ICCF 2020 1/2-1/2 (46)}) (6... Na6 7. a3 (7. Na3 Nc7 8. c4 b4 9. Nc2 h6 10. Bxf6 Qxf6 11. Ne5 Bxg2 12. Kxg2 a5 13. a3 b3 14. Ne3 a4 15. Qd3 cxd4 16. Qxd4 d6 17. N3g4 Qd8 18. Rad1 Qc8 {Baron,M (1971)-Putman,M ICCF 2007 1/2-1/2 (34)}) (7. e4 Qb6 8. Bxf6 gxf6 9. d5 Nc7 10. Re1 O-O-O 11. a4 b4 12. c3 a5 13. Nfd2 Ba6 14. Qb3 f5 15. cxb4 Qxb4 16. Qc2 h5 17. Ra3 fxe4 18. Rxe4 Qb6 { Deforel,J (2217)-Mashal,R ICCF 2016 1-0 (80)}) 7... Be7 8. Nc3 Qb6 9. dxc5 Nxc5 10. Be3 Qa6 11. Bxc5 Bxc5 12. Qd3 O-O 13. b4 Be7 14. e4 Rac8 15. Nd4 Qb6 16. Ncxb5 Ng4 17. f4 e5 18. Bh3 {Louro,E (2127)-Esen,N (2420) ICCF 2010 0-1 (32)}) (6... d5 7. Nc3 (7. c3 Nbd7 8. a4 (8. Ne5 Be7 9. Nxd7 Nxd7 10. Bxe7 Qxe7 11. Qd3 a6 12. a4 O-O 13. axb5 c4 14. Qf3 axb5 15. Na3 Bc6 16. Qf4 Nf6 17. Nc2 Nh5 {1/2-1/2 (17) Palladino,M (2148)-Hauser,J (2364) ICCF 2012}) 8... a6 9. Na3 b4 10. cxb4 cxb4 11. Nc2 a5 12. Rc1 Bd6 13. Nce1 O-O 14. Nd3 Qb6 15. Nfe5 Rac8 16. Qd2 Ba6 17. Bf4 Bc4 18. Nxc4 Rxc4 {Gyger,T-Jong,J ICCF 2006 1/2-1/2 (34)}) (7. Bxf6 gxf6 8. c3 Nd7 9. a4 b4 10. cxb4 cxb4 11. Qd3 f5 12. Rc1 a5 13. Nbd2 Ba6 14. Qe3 h5 15. h4 Nf6 16. Nb3 Bh6 17. Ng5 Ne4 18. f4 O-O {Kayser,P (2198) -Ondrás,M ICCF 2013 1-0 (25)}) 7... b4 8. Na4 cxd4 9. Nxd4 Nbd7 10. Rc1 Be7 11. c3 bxc3 12. Rxc3 O-O 13. Qc2 Qa5 14. Rc1 Bb4 15. Rc7 Rfc8 16. a3 Bd6 17. Rxc8+ Rxc8 18. Qd1 {Dunn,P (2030)-Lukyanenko,V (2119) ICCF 2016 0-1 (42)}) 7. Bxf6 (7. Nxd4 Bxg2 8. Kxg2 a6 (8... Qb6 9. Bxf6 gxf6 10. Nc3 (10. Qd3 Nc6 11. c3 Ne5 12. Qxb5 Qxb5 13. Nxb5 Rb8 14. a4 a6 15. Nc7+ Kd8 16. Nxa6 Rxb2 17. Rd1 Rxe2 18. Rd2 Re1 19. Rda2 Rc1 20. a5 d5 21. Nb4 Bc5 {Deforel,J (2251) -Magalhães,L ICCF 2007 0-1 (52)}) 10... a6 11. e4 Nc6 12. Nf3 Rc8 13. Qd2 Na5 14. Rad1 Qb7 15. Qd4 Bg7 16. Rfe1 O-O 17. Qxd7 Qa8 18. Qe7 Nc4 19. Rd7 Nxb2 20. Ra7 {Ebert,J (2304)-Gradwohl,J (2252) ICCF 2010 0-1 (47)}) 9. a4 (9. e4 h6 10. Bxf6 Qxf6 11. f4 Nc6 12. e5 Qg6 13. Nxc6 Qe4+ 14. Qf3 Qxc2+ 15. Nd2 Qxd2+ 16. Rf2 Qd5 17. Qxd5 exd5 18. Nd4 Bc5 19. Rd1 d6 20. Re2 Bxd4 {Smirnov,B (2267) -Lavrentyev,Y (2277) ICCF 2018 1/2-1/2}) 9... b4 10. c3 h6 (10... Be7 11. cxb4 h6 12. Bd2 Qb6 13. e3 Bxb4 14. a5 Qb7+ 15. Qf3 Ra7 16. Rc1 O-O 17. Qxb7 Rxb7 18. Bxb4 Rxb4 19. Rc2 e5 20. Nf5 Nc6 21. Nd2 Re8 22. Nc4 {Sciallero,V (2269) -Hameister,R (2418) ICCF 2018 1/2-1/2 (34)}) 11. Bf4 Qb6 12. Qc2 Be7 13. e4 O-O 14. h3 Nc6 15. Be3 Qb7 16. Nxc6 Qxc6 17. f3 d5 18. Nd2 dxe4 {Wilshusen,H (1473) -Portych,V (2141) ICCF 2018 0-1}) 7... Qxf6 (7... gxf6 8. Nxd4 Qb6 9. Bxb7 Qxb7 10. Qd3 Nc6 11. Nxc6 dxc6 12. Rd1 Be7 13. Nc3 Rd8 14. Qf3 O-O 15. e4 Rxd1+ 16. Nxd1 Rd8 17. Ne3 c5 18. a4 bxa4 19. Rxa4 {Groffen,J (2184)-Kubaský,A (2247) ICCF 2020 1/2-1/2 (25)}) 8. Nxd4 Bxg2 9. Kxg2 a6 (9... Nc6 10. Nxc6 dxc6 11. c3 Be7 12. Nd2 Qe5 13. Nf3 Qc7 14. Qd4 O-O 15. Qe5 Qb6 16. Qe4 Rad8 17. h4 h6 18. g4 c5 19. g5 f5 20. Qf4 Kh7 21. Rg1 {Reichelt,H (2305)-Iacomi,S (2343) ICCF 2021 1/2-1/2 (25)}) 10. c3 Bc5 11. Qd3 (11. e3 O-O 12. Nd2 Qd8 13. Qf3 Ra7 14. Rfc1 d5 15. a4 bxa4 16. Rxa4 Qd7 17. Rca1 Rb7 18. N4b3 Be7 19. e4 dxe4 20. Qxe4 Rb5 21. Ra5 h6 22. Rxb5 Qxb5 {Trofimov,V (2438)-Kazantsev,R (2419) ICCF 2020 1/ 2-1/2 (49)}) (11. e4 Bxd4 12. Qxd4 Qxd4 13. cxd4 Ke7 14. Nc3 Nc6 15. Rfd1 Rac8 16. h4 Rhd8 17. Rac1 d5 18. exd5 exd5 19. Ne2 Nb4 20. a3 Rxc1 21. Rxc1 Nd3 22. Rb1 Kd6 {Moujan,P (2253)-Hernández Delgado,J (1982) ICCF 2020 1/2-1/2 (45)}) 11... O-O (11... d5 12. Nb3 (12. Nd2 Nd7 13. e4 Ne5 14. Qe2 O-O 15. N4b3 Bb6 16. a4 bxa4 17. Rxa4 a5 18. Rfa1 Qd8 19. c4 dxc4 20. Nxc4 Nxc4 21. Rxc4 h6 22. Rac1 {1/2-1/2 (22) Andersen,J (2276)-Hrzina,B (2330) ICCF 2020}) 12... Nd7 13. e4 Ne5 14. Qe2 Bb6 15. exd5 O-O 16. N1d2 exd5 17. Rfe1 Nc4 18. Nf3 g6 19. h4 h5 20. Rad1 Kg7 21. Nbd4 b4 22. cxb4 Rfe8 23. Qxe8 {Kutlu,H (2245)-Emourlov,E (2234) ICCF 2020 1/2-1/2 (26)}) (11... Qg6 12. Qf3 d5 13. a4 bxa4 14. Rxa4 O-O 15. Nb3 Nd7 16. N1d2 Rfb8 17. Ra2 Ne5 18. Qf4 Bd6 19. Qd4 h6 20. Rfa1 Qc2 21. Rc1 Qg6 22. Na5 Rc8 23. Rca1 {Wegelin,R (2328)-Wedel,L (2303) ICCF 2021 1/2-1/ 2 (29)}) 12. Nd2 d5 13. b4 Bxd4 14. cxd4 Nc6 15. Nf3 Nxb4 (15... Rac8 16. a3 g5 17. h3 h5 18. Rad1 Kg7 19. Qe3 Kg6 20. h4 g4 21. Ne1 Kh7 22. f3 Qh6 23. Qxh6+ Kxh6 24. fxg4 hxg4 25. Rf6+ Kg7 26. Rf4 f5 27. Nd3 {Galjé,H (2237)-Salzmann,S (2351) ICCF 2021 1/2-1/2 (28)}) (15... Rfc8 16. a3 Qg6 17. Qxg6 hxg6 18. h4 { 1/2-1/2 (18) Ellis,J (2230)-Reis,C (2354) ICCF 2020}) 16. Qc3 a5 17. Rfc1 Qd8 { Kutlu,H (2218)-Pommrich,R (2210) ICCF 2019 1/2-1/2 (40)} 18. Qb3 Rb8 19. Rc5 Qd7 {1/2-1/2 (19) Ellis,J (2230)-Seidl,A (2240) ICCF 2020}) (6. Na3 a6 (6... b4 7. Nc4 cxd4 (7... d5 8. Nce5 Ne4 9. dxc5 Bxc5 10. Nd3 Be7 11. Nd4 Nd7 12. Kh1 Qb6 13. Be3 Bf6 14. Nb3 d4 15. Bc1 O-O 16. e3 dxe3 17. Bxe3 Qb5 18. Kg1 Rfd8 19. a4 {Deforel,J (2327)-Pietrobono,A (2213) ICCF 2006 0-1 (44)}) 8. Qxd4 d5 9. Nce5 Nbd7 (9... Ne4 10. c4 bxc3 11. bxc3 f6 12. Rb1 Nc6 13. Nxc6 Bxc6 14. Qd3 Qd7 15. Nd4 Rc8 16. Bh3 f5 17. f3 Nd6 18. Bf4 Kf7 19. Be5 Nc4 20. f4 Bc5 21. g4 {Deforel,J (2303)-Reinoso,A ICCF 2007 1-0 (36)}) 10. Nxd7 Nxd7 11. a3 bxa3 12. b3 Be7 13. Ra2 O-O 14. Bxa3 Bf6 15. Qd2 Re8 16. Bb2 Bxb2 17. Rxb2 Nc5 18. Qd4 { Lacoste,A (2273)-Novikovas,A (2358) ICCF 2004 1/2-1/2 (65)}) (6... Qb6 7. c4 ( 7. dxc5 Bxc5 8. b4 Bxb4 9. Rb1 Nc6 10. Be3 Qa5 11. Nxb5 Qxb5 12. a3 a5 13. axb4 axb4 14. c3 O-O 15. cxb4 d5 16. Nd4 Nxd4 17. Bxd4 Ne4 18. f3 Nd6 {Sarakauskas, G-Knoll,H (2643) ICCF 2006 0-1 (40)}) 7... b4 (7... bxc4 8. Nxc4 Qa6 9. b3 cxd4 10. Bb2 Be7 11. Rc1 O-O 12. Nxd4 d5 13. Ne5 Nbd7 14. Ndc6 Bd6 15. Qd2 Nxe5 16. Nxe5 Rfc8 17. Nc4 dxc4 18. Bxb7 Qxb7 19. Qxd6 {Deforel,J (2228)-de la Rosa Solórzano,J (2229) ICCF 2015 1/2-1/2}) 8. Nc2 Na6 9. b3 Be7 10. a3 O-O 11. axb4 {1-0 (11) Davidavicius,R (2191)-Macenis,A (1975) ICCF 2012}) 7. c4 cxd4 ( 7... Qb6 8. Be3 b4 9. Nc2 a5 10. Qd2 (10. dxc5 Bxc5 11. Bxc5 Qxc5 12. Qd4 Qxd4 13. Ncxd4 Ke7 14. Rfd1 Rc8 15. Rac1 Be4 16. Nb5 Rc5 17. Nd6 Bc6 18. Nb5 Bxf3 19. Bxf3 Nc6 20. Nd6 Rb8 21. b3 {1/2-1/2 (21) Liushnin,K (2307)-Maldonado Pacheco,J (2270) ICCF 2013}) 10... Na6 11. Rfd1 Be7 12. Nce1 O-O 13. Nd3 Rac8 14. Rac1 d6 15. dxc5 dxc5 16. Qc2 Nb8 17. h3 Nbd7 18. Bf4 Rfd8 19. Kh2 { Deforel,J (2146)-Cillóniz Razzeto,A (2441) ICCF 2008 0-1 (70)}) (7... b4 8. Nc2 cxd4 9. Nfxd4 (9. Ncxd4 Be7 10. Bf4 O-O 11. Re1 d6 12. Bd2 a5 13. a3 Na6 14. axb4 axb4 15. Qa4 Qc7 16. Rec1 Rfb8 17. Nb5 Qc5 18. Be3 {1/2-1/2 (18) Sadowski,M (2235)-Preziuso,T (2344) ICCF 2007}) 9... Bxg2 (9... Qb6 10. Bxb7 Qxb7 11. Qd3 Be7 12. Rd1 O-O 13. a3 bxa3 14. b3 d6 15. Bxa3 Nbd7 16. Ne3 Rab8 17. Ra2 Ne5 18. Qd2 Rfc8 19. f3 h5 20. Bb2 Nfd7 21. Bc3 {Deforel,J (2038) -Corujedo Hernández,R (2212) ICCF 2017 0-1 (42)}) 10. Kxg2 Qc7 11. b3 Nc6 12. Bb2 Be7 13. Nxc6 Qxc6+ 14. f3 O-O 15. e4 Rfd8 16. Qd2 a5 17. Rad1 d6 18. Qe3 Nd7 19. Rf2 {Heimonen,A (2108)-Kauppinen,M (2306) ICCF 2008 0-1 (60)}) 8. cxb5 Bxa3 9. bxa3 axb5 10. Nxd4 Bxg2 11. Kxg2 O-O (11... Qc8 12. Rb1 O-O 13. Nxb5 d5 14. Bf4 Nc6 15. Qd3 Qd7 16. Rfc1 e5 17. Bg5 Ne4 18. Be3 Rfb8 19. f3 Nf6 20. Bg5 h6 21. Bxf6 gxf6 22. Rc4 e4 23. Qd2 {Deforel,J (2038)-Marturano,M (1994) ICCF 2017 1/2-1/2 (55)}) 12. Nxb5 d5 13. Bb2 (13. Bf4 Nc6 14. Rc1 Na5 15. Qd4 Nc4 16. e4 Qd7 17. exd5 Qxb5 18. Rxc4 Qxd5+ 19. Qxd5 Nxd5 20. a4 Rac8 21. Rxc8 Nxf4+ 22. Kf3 Rxc8 23. Kxf4 Rc4+ {1/2-1/2 (23) Scheiba,M (2346)-Coyne,D (2350) ICCF 2015}) 13... Nbd7 14. Rc1 Qb6 15. Qb3 Rfb8 16. Nc7 Ra5 17. Qxb6 Nxb6 { Deforel,J (2038)-Duszynski,J (2230) ICCF 2017 0-1 (50)}) (6. c3 Be7 (6... cxd4 7. Nxd4 (7. cxd4 Be7 8. Bg5 (8. Nbd2 O-O 9. Nb3 d6 10. Bg5 Qb6 11. Be3 Bd5 12. Nc1 Nc6 13. h3 Qb7 14. Nd3 Rac8 15. Nf4 Be4 16. Ng5 Bxg2 17. Nxg2 Nb4 18. Ne1 e5 19. Bd2 Nc6 {Pajukari,S (2042)-Illetsko,J (2253) ICCF 2008 0-1 (33)}) 8... O-O (8... a6 9. a4 O-O 10. Qd3 Nc6 11. Bxf6 Bxf6 12. axb5 axb5 13. Nc3 Nb4 14. Rxa8 Qxa8 15. Qxb5 Nc6 16. d5 Ne7 17. dxe6 dxe6 18. Rd1 {1/2-1/2 (18) Falandt, J (2155)-Campani,P (2176) ICCF 2020}) (8... Nc6 9. e3 O-O 10. Nbd2 Rc8 11. Qe2 Qb6 12. Rfc1 d6 13. Bf1 a6 14. h4 h6 15. Bxf6 Bxf6 16. Nb3 Na5 17. Nfd2 e5 18. Nxa5 Qxa5 19. Nb3 Qa4 20. dxe5 {Kverndal,L (2029)-Johansen,K ICCF 2007 0-1}) 9. Qd3 (9. Nbd2 d6 10. Qb3 a6 11. a4 Bc6 12. axb5 Bxb5 13. Rfe1 Nbd7 14. e4 Rb8 15. Bf4 e5 16. Bg5 h6 17. Be3 Ng4 18. Nc4 Re8 19. Rac1 Nxe3 20. Qxe3 Bxc4 { Deforel,J (2228)-Trivedi,K (2115) ICCF 2015 0-1 (50)}) 9... a6 (9... d5 10. Rc1 h6 11. Bxf6 Bxf6 12. e3 b4 13. Nbd2 a5 14. Bf1 Ba6 15. Qc2 Bxf1 16. Kxf1 Qb6 17. Kg2 a4 18. h4 Ra7 19. Qd1 Nc6 20. Rc2 Rc8 21. Rac1 {Jacobs,R (2377) -Paulík,V (2371) ICCF 2016 1/2-1/2 (30)}) (9... Qb6 10. Nc3 b4 11. Na4 Qa6 12. Nc5 Qxd3 13. Nxd3 a5 14. Rfc1 Ba6 15. Nfe5 d5 16. Rc2 Bb5 17. Rac1 Na6 18. Nc6 Bd6 19. Nxa5 Bxd3 20. exd3 b3 21. Nxb3 {Jones,B (2189)-Flynn,P (2234) ICCF 2006 1/2-1/2 (44)}) 10. Nbd2 (10. Bxf6 Bxf6 11. Ng5 Bxg5 12. Bxb7 {1/2-1/2 (12) Jeute,V (2229)-Murin,P (2343) ICCF 2015}) 10... Qb6 (10... Nc6 11. a3 h6 12. Bxf6 Bxf6 13. Rfd1 d5 14. b4 Ra7 15. Nb3 a5 16. Nc5 Ba8 17. Qd2 Qb6 18. e3 Rd8 19. Qc3 Qb8 20. Rac1 e5 21. Nxe5 Nxe5 22. dxe5 {Jónasson,J (2337)-Hausdorf,H (2285) ICCF 2008 1-0 (60)}) 11. Bxf6 Bxf6 12. Rac1 h6 13. e3 Be7 14. Rc2 Nc6 15. a3 Rfc8 16. Rfc1 Rc7 17. Nb3 Rac8 18. Nc5 Ba8 {Falandt,J (2142)-Kuijpers,J ICCF 2020 1/2-1/2 (58)}) 7... Bxg2 8. Kxg2 Qb6 9. Nd2 (9. Qd3 a6 10. Bg5 Be7 11. a4 b4 12. cxb4 Nc6 13. Nxc6 Qxc6+ 14. f3 Qd5 15. Qd2 Bxb4 16. Qxb4 Qxg5 17. Nc3 Qe5 18. Rfd1 Rb8 19. Qd6 Qxd6 20. Rxd6 Ke7 {Salzmann,S (2210)-Behling,H (2227) ICCF 2014 1/2-1/2}) 9... Nc6 10. N2f3 Nxd4 (10... Bc5 11. Nb3 O-O 12. Nxc5 Qxc5 13. Bg5 Ne4 14. Be3 Qe7 15. Qd3 f5 16. Rfd1 Rfd8 17. b4 Qf6 18. a4 Qxc3 19. Rdc1 Qf6 20. axb5 Nxb4 21. Qb3 a5 22. Bd4 {Brodt,A (2398)-Pisani,C (2130) ICCF 2013 1-0 (53)}) 11. Qxd4 {1-0 (11) Iñiguez,M (2345)-Wedrychowski, L ICCF 2012}) (6... Na6 7. Qd3 (7. Re1 Be7 8. Nbd2 d5 9. e4 dxe4 10. Ne5 O-O 11. Nxe4 Nxe4 12. Bxe4 Bxe4 13. Rxe4 Qd5 14. Qe2 f5 15. Re3 cxd4 16. cxd4 Bd6 17. Rc3 Nb4 18. a3 Na2 {Kurpnieks,V (2155)-Grasis,J (2106) ICCF 2011 1-0 (40)}) (7. Bf4 Be7 8. Na3 Qb6 9. Qb3 Bc6 10. c4 b4 11. Nc2 O-O 12. a3 cxd4 13. Ncxd4 Be4 14. axb4 Nxb4 15. Rfd1 Bc5 16. Qc3 Rfc8 17. Be5 Ne8 18. Bf4 d5 {Lagergren, H (1723)-Storkebaum,K (2290) ICCF 2013 0-1 (74)}) 7... Qb6 8. Nbd2 cxd4 9. Nxd4 Bxg2 10. Kxg2 b4 11. e4 Rc8 12. e5 bxc3 13. bxc3 Qb7+ 14. Qf3 Qxf3+ 15. N4xf3 Nd5 16. Bb2 Be7 17. c4 Nb6 18. a4 {Pawlowski,W (2122)-Bulgarini Torres,M (2128) ICCF 2012 1/2-1/2 (39)}) (6... Nc6 7. Be3 c4 8. a4 a6 9. Bg5 Be7 10. Nfd2 d5 11. e4 Nxe4 12. Bxe7 Nxe7 13. Nxe4 dxe4 14. Qe2 f5 15. f3 exf3 16. Bxf3 Bxf3 17. Qxf3 O-O 18. Re1 {Lagergren,H (2063)-Beltins,G (1941) ICCF 2016 0-1 (56)}) 7. Bg5 (7. dxc5 Bxc5 8. b4 (8. Nbd2 O-O 9. Nb3 Be7 10. Be3 (10. Bg5 h6 11. Bxf6 Bxf6 12. Nc5 Bc6 13. Qd3 Qb6 14. Ne4 Bxe4 15. Qxe4 d5 16. Qg4 Nc6 17. a3 Rac8 18. Rfd1 a5 19. Rab1 b4 20. cxb4 axb4 21. axb4 Nxb4 {Leben,D (2392)-Mori,A (2315) ICCF 2005 1/2-1/2 (39)}) 10... a5 (10... Qc7 11. Nbd4 a6 12. a4 bxa4 13. Qxa4 d6 14. Nb3 Nbd7 15. Na5 Be4 16. Nd4 Nc5 17. Qd1 Bxg2 18. Kxg2 Nd5 19. Bc1 Bf6 20. Qc2 Ne7 21. Rd1 d5 22. f3 {Kozlov,V (2403)-Blau,D (2233) ICCF 2013 1/ 2-1/2 (50)}) (10... Nd5 11. Bd4 Qc7 12. Qd3 a6 13. e4 Nf6 14. Rfe1 Nc6 15. e5 Nxd4 16. Nfxd4 Ne8 17. Bxb7 Qxb7 18. a4 Nc7 19. Red1 Rfc8 20. Nd2 f6 21. exf6 Bxf6 22. Ne4 {Bancevich,S (2358)-Tolstik,A (2358) ICCF 2012 1-0 (64)}) 11. a4 bxa4 12. Rxa4 Qc7 13. Qc2 Bc6 14. Rh4 Rc8 15. Nbd4 Bd5 16. Nb5 Qb7 17. Bg5 Qxb5 18. Nd4 Qc5 19. Bxf6 Bxf6 {Folk Gilsanz,J (2069)-Magallanes,F (2504) ICCF 2010 1/2-1/2 (31)}) (8. Qd3 a6 9. Nbd2 (9. Bg5 O-O 10. Nbd2 d5 11. Nb3 Bb6 12. a4 bxa4 13. Rxa4 Nbd7 14. Qc2 Qc7 15. Nfd4 Rae8 16. Rd1 Ng4 17. Bh3 f5 18. Rf1 g6 19. f3 Nge5 20. Bf4 Qd8 {Dunn,P (2049)-Olsen,S (1617) ICCF 2018 1-0 (55)}) 9... O-O 10. b4 Be7 11. a4 bxa4 12. Rxa4 Qc7 13. Bb2 Nc6 14. e4 d5 15. exd5 exd5 16. Re1 Rfe8 17. Nf1 d4 18. b5 axb5 19. Rxa8 {1/2-1/2 (19) Nikolenko,S-Steinman,A (1911) ICCF 2010}) (8. Bg5 Be7 (8... h6 9. Bxf6 Qxf6 10. Qd3 a6 11. b4 Bb6 12. a4 bxa4 13. Qd6 Qd8 14. c4 Bc7 15. Qd2 Nc6 16. Rxa4 O-O 17. Nc3 Qc8 18. Rc1 Ne7 19. e3 {1/2-1/2 (19) Kouba,P (2411)-Fischer,W (2460) ICCF 2016}) 9. a4 bxa4 10. Qxa4 O-O 11. Rd1 a5 12. Qb3 Bc6 13. c4 h6 14. Bf4 a4 15. Qc2 Qb6 16. Nc3 Ng4 17. e3 Qb7 18. h3 Nf6 19. Qe2 Ra5 {Neborak,Y (2300)-Kazantsev,R (2421) ICCF 2019 1/2-1/2 (38)}) (8. Bf4 O-O 9. b4 Be7 10. a4 bxa4 11. Qxa4 a5 12. b5 d6 13. c4 Nbd7 14. Nd4 d5 15. Nc6 Bxc6 16. bxc6 Nb6 17. Qc2 Nxc4 18. e4 Rc8 19. exd5 exd5 {Folk Gilsanz,J (2369)-Wukits,R (2356) ICCF 2014 1/2-1/2 (25)}) 8... Be7 9. a4 bxa4 10. Qxa4 O-O 11. Nbd2 a6 (11... Qc8 12. Ba3 d5 13. Rfc1 Nbd7 14. Qb3 Nb6 15. c4 dxc4 {1/2-1/2 (15) Volek,S (2370)-Hostinský,J (2386) ICCF 2019}) 12. Bb2 Bc6 13. Qb3 Qb6 14. Nc4 Qc7 15. Na5 Be4 16. Nd4 Bxg2 17. Kxg2 Qb6 18. Ra4 Nc6 {Ingersol,H (2443)-Harris,T (2056) ICCF 2020 1/2-1/2 (38)}) (7. a4 b4 8. Bf4 (8. dxc5 Bxc5 9. Bf4 d5 10. cxb4 Bxb4 11. Qb3 a5 12. Na3 O-O 13. Nc2 Nc6 14. Nxb4 Qb6 15. Be3 Qxb4 16. Qxb4 axb4 17. Nd4 Nxd4 18. Bxd4 Rfc8 19. a5 Ba6 { Peñafiel López,J (2308)-Pérez Fernández,J (2178) ICCF 2006 1/2-1/2 (25)}) 8... cxd4 9. cxd4 O-O 10. Nbd2 Nc6 11. Ne5 Nd5 12. Bxd5 exd5 13. Ndf3 Rc8 14. Nd3 Re8 15. Nc5 Bxc5 16. dxc5 Qe7 17. Be3 Nd8 18. Nd4 Ne6 {Shannon,P (1955) -Bapple,E ICCF 2013 1/2-1/2 (58)}) (7. Re1 O-O 8. b3 d5 9. Bb2 Nc6 10. e3 Ne4 11. Nbd2 Rc8 12. Rc1 Qb6 13. Nxe4 dxe4 14. Nd2 f5 15. a3 cxd4 16. cxd4 a5 17. Nb1 Nb8 18. Qd2 Bd5 {Setyoko,U-Drescher,A (1769) ICCF 2017 0-1 (32)}) 7... Na6 (7... h6 8. Bxf6 Bxf6 9. dxc5 Na6 10. Na3 Nxc5 11. Nxb5 d5 12. Nd2 Qd7 13. Nd4 O-O 14. N2b3 Na4 15. Qc2 a5 16. Rfe1 Rfc8 {1/2-1/2 (16) Wood,B (1976)-Campani, P (2227) ICCF 2020}) (7... Qb6 8. a4 bxa4 9. Nbd2 cxd4 10. Nc4 Qc7 11. Rxa4 O-O 12. Qxd4 d5 13. Bf4 Qc8 14. Na5 Nc6 15. Nxc6 Qxc6 16. Ne5 Qb5 17. Rfa1 Rfc8 18. Qd3 a6 19. Be3 {Keller,G-Rassack,J ICCF 2020 0-1 (68)}) 8. e3 (8. a4 b4 9. cxb4 Nxb4 10. dxc5 Rc8 11. Nc3 Bxc5 12. Nb5 Qb6 13. Ne5 Bxg2 14. Kxg2 Nbd5 15. Nc4 Qc6 16. f3 a6 17. Ncd6+ Bxd6 18. Na7 Qb7 19. Nxc8 Qxc8 {De la Calle,I (2272) -Rudykh,S ICCF 2008 1/2-1/2 (47)}) (8. Na3 Qb6 9. c4 b4 10. Nb5 O-O 11. b3 d5 12. a3 cxd4 13. axb4 Nxb4 14. Qxd4 Bc5 15. Qh4 Ne4 16. Be7 Bxf2+ 17. Kh1 Nc2 18. Bxf8 Rxf8 19. Rxa7 Bc6 {Folk Gilsanz,J (2069)-Pawlowski,W ICCF 2010 1/2-1/ 2 (25)}) (8. Nbd2 O-O 9. Ne5 (9. Re1 h6 10. Bxf6 Bxf6 11. e4 cxd4 12. cxd4 Qb6 13. Nb3 d5 14. e5 Be7 15. Rc1 Rac8 16. a3 Rc7 17. Qd3 Rfc8 18. Bf1 b4 19. a4 Rxc1 20. Rxc1 Rxc1 {Gawne,M (1668)-Dudeney,K (1818) ICCF 2014 0-1 (31)}) 9... Bxg2 10. Kxg2 Qc7 11. Ndf3 d6 12. Bxf6 Bxf6 13. Ng4 Be7 14. Ne3 d5 15. a3 Qb7 16. Qd2 Nc7 17. a4 Rfb8 18. Qc2 b4 19. Rfd1 Ne8 {De la Calle,I (2272)-Morley,P (2277) ICCF 2008 0-1 (47)}) (8. b3 h6 9. Bf4 O-O 10. Nbd2 Nd5 11. Qc2 Rc8 12. Qb2 d6 13. Rac1 g5 14. Be3 f5 15. Nb1 Nxe3 16. fxe3 Qc7 17. Nbd2 g4 18. Ne1 Bg5 19. Nc2 Bxg2 {Yetman III,E (2166)-Marchant,M (2265) ICCF 2008 0-1 (29)}) 8... O-O 9. Nbd2 h6 10. Bxf6 Bxf6 11. Qe2 Qb6 (11... Rb8 12. Ne5 (12. a3 Qb6 13. Rfc1 d6 14. b4 Nc7 15. bxc5 dxc5 16. Rab1 a5 17. c4 b4 18. dxc5 Qxc5 19. axb4 axb4 20. Nb3 Qh5 21. Nfd4 Qxe2 22. Nxe2 Bxg2 23. Kxg2 Rfc8 {Hernáez Fernández,C (2242)-Yoshida,A (2266) ICCF 2019 1/2-1/2 (35)}) 12... d6 13. Nc6 Bxc6 14. Bxc6 Qb6 15. Bf3 d5 16. Rfe1 b4 17. c4 Rfd8 18. cxd5 exd5 19. dxc5 Nxc5 20. Nb3 Nxb3 21. axb3 Rd6 22. Kg2 Rbd8 23. Ra4 {Pekin,T (2191)-Satici,A (2354) ICCF 2007 1/2-1/2 (32)}) 12. Rfc1 (12. Ne5 Bxg2 13. Kxg2 Qb7+ 14. Kg1 d6 15. Ng4 Bd8 16. f4 b4 17. c4 Bb6 18. Nb3 Rac8 19. Rac1 Rfe8 20. Rfd1 Rcd8 21. Rd2 Re7 22. h3 Rc7 23. Kh2 Qc8 {Jedrzejowski,M (2475)-Romm,M (2489) ICCF 2012 1-0 (65)}) (12. Rfd1 cxd4 13. cxd4 Rfc8 14. Rac1 d6 15. Ne1 Nc7 16. Bxb7 Qxb7 17. Qf3 Nd5 18. e4 Nb6 19. e5 Qxf3 20. Nexf3 Be7 21. Ne4 {1/2-1/2 (21) Jensen, B (2301)-Galiano Martínez,A (2326) ICCF 2019}) (12. a4 b4 13. Rfc1 d5 14. a5 Qd8 15. cxb4 cxd4 16. exd4 Nxb4 17. Nb3 Rb8 18. Nc5 Qe7 19. Qd2 Ba8 20. Ra3 Nc6 21. Na6 Rbc8 22. Rac3 Qd6 23. b4 Rce8 {Prystenski,A (2232)-Hosea,S (2015) ICCF 2011 1/2-1/2 (59)}) 12... d5 13. a3 c4 14. e4 Nc7 15. e5 Be7 16. Ne1 a5 17. b4 Ra7 {Silva,M (2321)-Reis,C (2399) ICCF 2012 0-1}) (6. Be3 cxd4 (6... Qc7 7. c3 cxd4 8. cxd4 Nc6 9. Qd3 a6 10. Rc1 Be7 11. Ne5 Qd6 12. Nxc6 Bxc6 13. Bf4 Qb4 14. a3 Qa5 15. Bxc6 dxc6 16. Rxc6 b4 17. Qc4 O-O 18. a4 {Sadowski,M (2235) -Satici,A (2335) ICCF 2007 1-0 (35)}) (6... Nd5 7. Bg5 f6 8. e4 Nb4 9. Bf4 Bxe4 10. Nc3 Bxc2 11. Qd2 g5 12. Nxg5 N8c6 13. a3 cxd4 14. axb4 fxg5 15. Bxc6 dxc3 16. Qxc2 dxc6 17. Be5 Qd2 18. Qe4 {Moskvichev,V-Ylönen,O ICCF 2009 1-0 (41)}) 7. Nxd4 (7. Qxd4 Nc6 (7... Be7 8. Qd3 a6 9. a4 b4 10. a5 O-O 11. Bb6 Qe8 12. Nbd2 d5 13. c4 bxc3 14. bxc3 Nbd7 15. Bd4 Bd6 16. Rab1 Qc8 17. c4 e5 18. Qb3 Bc6 19. Bb6 {Hladecek,M (2422)-Blecha,M (2387) ICCF 2009 1/2-1/2 (49)}) 8. Qd3 Nb4 (8... a6 9. c3 Be7 10. Nbd2 O-O 11. b4 d5 12. Nb3 Qd7 13. Bc5 Ne4 14. Bxe7 Qxe7 15. Rfc1 Rfc8 16. a4 bxa4 17. Rxa4 Qf6 18. Raa1 h6 19. Nbd2 Ne7 20. c4 { Mudra,O (2351)-Gliga,R ICCF 2020 1/2-1/2 (27)}) 9. Qd2 Nbd5 10. Bd4 Qc7 11. a4 b4 12. Rc1 Ne4 13. Qd1 Bc5 14. Nbd2 Ndf6 15. Nxe4 Nxe4 16. Ne1 O-O 17. c3 Bxd4 18. cxd4 Qd8 {Hladecek,M (2422)-Jandovský,V (2347) ICCF 2009 1-0 (32)}) 7... Bxg2 8. Kxg2 a6 (8... Qb6 9. Qd3 Bc5 10. Nc3 (10. Nd2 Nc6 11. Nxb5 Nd5 12. Nd6+ {1-0 (12) Glauser,P (2097)-Brunner,R (2194) ICCF 2012}) 10... Nc6 11. Rad1 Nxd4 12. Bxd4 Bxd4 13. Qxd4 b4 14. Ne4 Qxd4 15. Rxd4 Nxe4 16. Rxe4 a5 17. Rc1 Ke7 18. c4 Rhc8 19. Rd4 d6 20. e4 {Steinman,A-Brailsford,J (2247) ICCF 2008 1/2-1/2 }) (8... Qc7 9. Nd2 Be7 10. N2f3 b4 11. Nb3 a5 12. Rc1 a4 13. Nbd4 Qb7 14. c3 O-O 15. cxb4 Qxb4 16. Qc2 Qb7 17. Bd2 Ra6 18. Qc7 Qa8 19. Kg1 Ne4 20. Rfd1 { Clark,S (1877)-Reulink,F ICCF 2020 0-1 (32)}) 9. Nd2 Nd5 10. a4 b4 11. Nc4 (11. N2f3 Nxe3+ 12. fxe3 Be7 13. e4 O-O 14. Qd3 Qb6 15. Rad1 Ra7 16. Nd2 Rc7 17. Nc4 Qb7 18. Rf3 Rfc8 19. b3 d6 20. Rdf1 Rxc4 21. bxc4 Nd7 22. Rxf7 Ne5 {Müller,S (1999)-Robert,G (2268) ICCF 2012 0-1 (42)}) 11... Nxe3+ 12. Nxe3 Bc5 13. Qd2 O-O 14. c4 bxc3 15. Qxc3 Qb6 16. Rfd1 Bb4 17. Qb3 Nc6 {Rúnarsson,G (2142) -Lehnhoff,H (2275) ICCF 2017 1/2-1/2 (34)}) (6. Nc3 a6 7. a4 (7. dxc5 Bxc5 8. a4 (8. Ne5 Bxg2 9. Kxg2 Be7 10. Kg1 Qc7 11. Bf4 Qb7 12. a4 b4 13. Na2 O-O 14. c3 bxc3 15. Nxc3 d6 16. Rb1 dxe5 17. Bg5 Rd8 18. Qc2 Nc6 19. Ne4 Nxe4 { Anderson,L (1253)-Ramsden,J (2016) ICCF 2015 0-1}) 8... b4 9. Na2 O-O 10. c3 bxc3 11. bxc3 Qc7 12. Bf4 d6 13. Bg5 Ne4 14. Bf4 Nd7 15. e3 e5 16. Bh6 gxh6 17. Nh4 Ndf6 18. Nf5 Qd7 {Anderson,L (899)-Castle Jr.,T ICCF 2018 0-1 (26)}) 7... cxd4 8. Na2 Bxf3 9. Bxf3 Nc6 10. axb5 axb5 11. Bg5 Bc5 12. c3 O-O 13. b4 Bb6 14. Bxf6 Qxf6 15. cxd4 Bxd4 16. Rc1 Rxa2 17. Bxc6 dxc6 {Anderson,L (1212) -Mukherjee,S ICCF 2016 0-1}) (6. b3 cxd4 7. Bb2 (7. Nxd4 Bxg2 8. Kxg2 a6 9. Bb2 Nc6 10. Nd2 Nxd4 11. Bxd4 d5 12. Nf3 Be7 13. a4 Ne4 14. axb5 axb5 15. Qd3 Bf6 16. Qxb5+ Qd7 17. Rxa8+ Bd8 18. Qxd7+ Kxd7 {Arias Castañedo,J (1625) -Santamaría Quintana,I (1082) ICCF 2019 1-0}) 7... Be7 8. Qxd4 O-O 9. Rc1 Nc6 10. Qd1 Qb6 11. Nbd2 d5 12. e3 Rac8 13. a4 b4 14. c4 bxc3 15. Bxc3 Bb4 16. Bb2 Qa5 17. Rc2 Rfd8 {Mogstad,O (2190)-Sjøl,H (2301) ICCF 2021}) (6. Bf4 Nc6 (6... cxd4 7. c3 (7. Nxd4 Bxg2 8. Kxg2 Qb6 9. Qd3 a6 10. Nf3 Qc6 11. Nbd2 Be7 12. c4 b4 13. e4 d6 14. a3 bxa3 15. Rxa3 O-O 16. b4 Qd7 17. Rb1 Ra7 18. Be3 Rb7 { Lagergren,H (1998)-Dorn,M (2168) ICCF 2016 1/2-1/2 (41)}) 7... dxc3 8. Nxc3 a6 9. b4 Bxb4 10. Bxb8 Rxb8 11. Ne5 Bxc3 12. Rc1 Bxe5 13. Bxb7 Rxb7 14. Qd3 O-O 15. Qf3 d5 16. Rb1 Ne4 17. Qh5 Bf6 18. f3 {Anderson,L (912)-Staak,E (2180) ICCF 2019 0-1 (29)}) (6... Nd5 7. Na3 Nxf4 8. gxf4 a6 9. c4 cxd4 10. cxb5 Bxa3 11. bxa3 axb5 12. Qxd4 O-O 13. Qd3 Bxf3 14. Bxf3 d5 15. Qxb5 Qh4 16. Qb7 Na6 17. e3 Rfb8 18. Qc6 {Jurgens,J-Saxena,A (2208) ICCF 2009 1/2-1/2 (50)}) 7. Nc3 Qb6 8. dxc5 Bxc5 9. a3 a6 10. e4 O-O 11. e5 Ng4 12. Ne4 Be7 13. Nd6 f6 14. Nxb7 Qxb7 15. h3 fxe5 16. Nxe5 Ngxe5 17. Bxe5 Rad8 {Lucas,K (1792)-Smyth,S (1826) ICCF 2010 1/2-1/2 (40)}) (6. Nbd2 cxd4 7. Nb3 Be7 8. Nbxd4 a6 9. c3 O-O 10. a4 bxa4 11. Qxa4 Qc7 12. Qa5 Qxa5 13. Rxa5 d5 14. Bf4 Nbd7 15. Nb3 Rfd8 16. Rd1 Rac8 17. Ne5 Nxe5 {Utzinger,K (2357)-Höglund,J (2335) ICCF 2009 1/2-1/2 (28)}) (6. e3 d5 7. b3 Nbd7 8. Bb2 Be7 9. Nbd2 O-O 10. c4 (10. dxc5 Nxc5 11. Nd4 a6 12. h4 h6 13. Qe2 Qc7 14. Rac1 Rfd8 15. N2f3 Bf8 16. c4 dxc4 17. bxc4 b4 18. Rfd1 Be4 19. Ne1 Bxg2 20. Kxg2 Na4 21. Ba1 Ne4 {Horie,T (1790)-Portych,V (2098) ICCF 2017 0-1 (31)}) 10... bxc4 11. bxc4 Rb8 12. Qc2 Qc7 13. cxd5 Bxd5 14. Rfb1 Rfc8 15. e4 Bb7 16. Re1 Qd8 17. d5 exd5 {Rogers,B-Fillion,S (2045) ICCF 2013 0-1 (73)}) (6. e4 cxd4 7. e5 Nd5 8. Nxd4 Qb6 9. a4 Nc7 10. axb5 Nxb5 11. Nf3 d5 12. exd6 Nxd6 13. Be3 Qxb2 14. Ra3 Nd7 15. Bf4 Qb6 16. Rb3 Qa6 17. Bxd6 Bxd6 { Ohtake,S (2544)-Leung,H (2371) ICCF 2006 1-0 (37)}) (6. dxc5 Bxc5 7. a3 (7. Qd3 a6 8. Be3 Bxe3 9. Qxe3 O-O 10. a4 b4 11. Nbd2 d6 12. c3 bxc3 13. Qxc3 Nc6 14. h3 a5 15. Nd4 Nxd4 16. Qxd4 e5 17. Qe3 Bxg2 18. Kxg2 Qd7 {Waltmans,F (2328) -Eshuis,H (2087) ICCF 2015 0-1 (30)}) (7. b3 O-O 8. Bb2 a6 9. Nbd2 d6 10. c4 b4 11. a3 a5 12. axb4 Bxb4 13. Ba3 Qb6 14. Bxb4 Qxb4 15. Qc2 Nbd7 16. Ra4 Qb6 17. Rfa1 Nc5 {0-1 (17) Baars,J (1673)-MacMillen,A (1704) ICCF 2017}) 7... O-O 8. b4 Be7 9. Bb2 d5 10. Qd3 a6 11. Nbd2 Nbd7 12. c3 Nb6 13. Nd4 Rc8 14. Rac1 Qc7 15. f4 Nc4 16. Ba1 Nxa3 17. e3 a5 {Jaszczowski,Z (1751)-Coyne,D (2350) ICCF 2015 0-1 (37)}) 6... b4 7. Nbd2 (7. Be3 cxd4 8. Nxd4 Bxg2 9. Kxg2 a6 10. c4 Qc7 11. Nd2 Be7 12. f3 d6 13. a5 O-O 14. Qb3 Qb7 15. Ra4 d5 16. Bf2 Nbd7 17. Nc2 Rac8 18. Rc1 dxc4 {Nguyen,M (1904)-Almarza Mato,C (2169) ICCF 2020 0-1 (28)}) (7. c3 cxd4 8. cxd4 Be7 9. Bg5 O-O 10. Nbd2 h6 11. Bxf6 Bxf6 12. a5 Ba6 13. Re1 Nc6 14. e3 Bb5 15. Ne4 Rb8 16. b3 a6 17. Nxf6+ Qxf6 18. Qd2 Rfc8 {Roy Laguens,A (2404)-Ruiz-Jarabo,F (2301) ICCF 2019 1/2-1/2 (43)}) 7... cxd4 8. Nb3 Be7 9. Nbxd4 O-O 10. Bf4 d6 11. Bd2 a5 12. Nb5 Na6 13. Bf4 Bd5 14. Nfd4 Bxg2 15. Kxg2 Rc8 16. Nb3 Qb6 17. Qd3 d5 18. N5d4 Nc5 19. Qb5 Bd8 20. Nxc5 Rxc5 21. Qxb6 Bxb6 22. Bd6 Rcc8 23. Bxf8 Bxd4 24. Be7 Bxb2 25. Ra2 Bc3 (25... Be5 26. f4 Bc3 27. Bxf6 Bxf6 28. Rd1 Kf8 29. Kf3 Ke7 30. Rd3 Rc4 31. e3 g6 32. Ke2 {1/2-1/2 (32) Sidenko,A (2245)-Burri,P (2066) ICCF 2009}) 26. f3 Ne8 27. Bg5 Nd6 28. Rd1 Nc4 29. Kf2 Bb2 30. e4 f6 31. Bc1 Bxc1 32. Rxc1 d4 33. Ke2 e5 34. Rb1 Ne3 35. Kd2 Kf7 36. Rb3 g5 37. Rb1 g4 38. f4 Nc4+ 39. Kd3 Ke6 40. Re1 Ne3 41. Kd2 exf4 42. gxf4 Rc3 43. Re2 Nc4+ 44. Ke1 Ra3 45. Rxa3 bxa3 46. c3 d3 47. Ra2 h5 48. Kd1 h4 49. Ke1 g3 50. hxg3 hxg3 51. Ra1 g2 52. Kf2 d2 53. Ke2 a2 54. Rg1 Na3 55. Kxd2 Nb1+ {0-1 (55) Frenzel,L (2006)-Sidenko,A (2245) ICCF 2009 1 d4 Nf6 2 Nf3 e6: Torre,-London and Colle Systems}) 4... Bb7 5. Nb3 (5. Bg2 c5 6. c4 (6. O-O cxd4 7. Nxd4 Bxg2 8. Kxg2 Qb6 9. N2f3 Be7 10. Qd3 b4 11. a3 Na6 12. Qb5 bxa3 13. b3 Nc7 14. Qd3 a2 15. Rxa2 O-O 16. e4 d5 17. e5 Ne4 {Oppermann,P (2285)-Wharrier, J (2408) ICCF 2017 1/2-1/2 (46)}) 6... bxc4 7. Nxc4 cxd4 8. Qxd4 d5 9. Nce5 Bd6 10. O-O O-O 11. Be3 Nc6 12. Nxc6 Bxc6 13. Rfc1 Bb5 14. Qd2 a5 15. a4 Be8 16. Bd4 Ne4 {Kuhne,D (2443)-Enin,A (2365) ICCF 2020 1/2-1/2 (37)}) 5... Be7 6. Bg2 d6 (6... O-O 7. O-O a5 8. a4 b4 9. Bg5 h6 10. Bxf6 Bxf6 11. Qd3 c6 12. Nc5 Bc8 13. e4 d6 14. e5 dxc5 15. exf6 Ba6 16. Qe4 Bxf1 17. fxg7 Kxg7 18. Rxf1 { Kiupel,H (2268)-Kollowa,K (2188) ICCF 2017 0-1 (31)}) 7. O-O O-O 8. Bg5 Nbd7 9. Na5 Be4 10. Ne1 Bxg2 11. Nxg2 h6 12. Nc6 Qe8 13. Be3 Nb6 14. Nxe7+ Qxe7 15. Qd3 {Silva,M (2261)-Silva Filho,A (2164) ICCF 2020 1/2-1/2 (65)}) (3... Bb4+ 4. c3 Ba5 (4... Be7 5. Bg2 O-O 6. O-O d5 7. Nbd2 b6 8. c4 Bb7 9. cxd5 Bxd5 10. e3 c5 11. Kh1 Nbd7 12. b3 Qc7 13. dxc5 Nxc5 14. b4 Nce4 15. Nxe4 Nxe4 16. Nd2 { Konovalenko,A (2110)-Kotyurgin,I (2279) ICCF 2021 1-0 (83)}) 5. Qa4 Bb6 6. Nbd2 O-O 7. Nc4 Nc6 8. Nxb6 cxb6 9. Bg2 d5 10. O-O Bd7 11. Qc2 Ne7 12. Ne5 Nc6 13. Bg5 h6 14. Bxf6 gxf6 15. Nxd7 {Gurgui,D (1769)-Botescu,A ICCF 2014 1-0 (65)}) ( 3... d6 4. Bg2 Nbd7 5. c4 c5 6. O-O Be7 7. Nc3 cxd4 8. Nxd4 a6 9. b3 O-O 10. Bb2 Nc5 11. e4 Bd7 12. b4 Qb6 13. a3 Be8 14. Kh1 Ncd7 15. f4 {Deforel,J (1915) -Varela,A (2063) ICCF 2018 1-0}) (3... Be7 4. Bf4 O-O 5. Bg2 d5 6. O-O Nbd7 7. c4 dxc4 8. Nc3 Nd5 9. Ne5 Nxe5 10. Bxe5 c6 11. Bxd5 exd5 12. b3 b5 13. e4 b4 14. Ne2 f6 15. Bf4 {Anderson,L (887)-Roy,R ICCF 2019 0-1}) 4. Bg2 (4. Be3 Nc6 5. dxc5 Ng4 6. Qd2 Nxe3 7. Qxe3 Qa5+ 8. Qd2 Qxc5 9. Nc3 Be7 10. Bg2 d5 11. O-O O-O 12. e4 d4 13. Ne2 Rd8 14. c3 dxc3 15. Qxc3 Qb5 {Kalinaj,J (1858)-Majercák, J ICCF 2011 0-1 (51)}) (4. Bf4 cxd4 5. Nxd4 e5 6. Bxe5 Qa5+ 7. c3 Qxe5 8. Bg2 Nc6 9. O-O d5 10. f4 Qe3+ 11. Rf2 Ng4 12. Qf1 Nxf2 13. Nc2 Nh3+ 14. Kh1 Qb6 15. Nba3 Nf2+ {Anderson,L (781)-Tagoc,C ICCF 2020 0-1 (44)}) (4. c3 Nc6 (4... b6 5. Bg5 Bb7 6. Bg2 Be7 7. Bxf6 Bxf6 8. O-O h6 9. dxc5 bxc5 10. Qb3 Qc8 11. Na3 d5 12. Nd2 O-O 13. c4 Rd8 14. cxd5 {1-0 (14) Reyes Cortés,R (1590)-Roig García, J (1730) ICCF 2020}) 5. Bg2 Be7 6. O-O O-O 7. Bg5 d5 8. e3 h6 9. Bxf6 Bxf6 10. Nbd2 Qb6 11. Qc2 cxd4 12. cxd4 Bd7 13. a3 Rac8 14. Qd3 Rfd8 15. Nb3 Be8 { Yetman III,E (1985)-Boyd,J (2105) ICCF 2021}) (4. dxc5 Bxc5 5. Bg2 O-O 6. c4 Nc6 7. O-O h6 8. a3 a5 9. b3 Qe7 10. e3 d5 11. Bb2 dxc4 12. bxc4 e5 13. Nc3 Rd8 14. Nd5 Nxd5 15. cxd5 e4 {Szymanski,R (2442)-Moskvichev,V (2420) ICCF 2014 1/ 2-1/2 (39)}) (4. Bh3 Nc6 5. O-O d5 6. c3 b6 7. a3 Bb7 8. b4 Be7 9. Bf4 Ne4 10. Nbd2 Nxc3 11. Qe1 Nxd4 12. Nxd4 cxd4 13. Nf3 Bf6 14. e3 dxe3 15. Qxe3 O-O { Nichol,J-Dunks,P (1896) ICCF 2017 0-1 (36)}) 4... Nc6 (4... cxd4 5. O-O (5. Nxd4 a6 (5... d5 6. Nc3 (6. c3 e5 7. Nb3 Nc6 8. Bg5 Be6 9. N1d2 Be7 10. Nf3 O-O 11. O-O Qc7 12. e3 Ne4 13. Bxe7 Nxe7 14. Nfd2 Nd6 15. Qe2 a5 16. a4 Qb6 17. Rfb1 Bf5 {Wilshusen,H (1473)-Cacko,J (2142) ICCF 2018 0-1 (33)}) (6. Nb3 Nc6 7. O-O Be7 8. Nc3 O-O 9. e4 d4 10. Ne2 e5 11. f4 Ng4 12. fxe5 d3 13. Qxd3 Qb6+ 14. Ned4 Ngxe5 15. Qb5 Nxd4 16. Qxb6 Ne2+ 17. Kf2 axb6 {Pawlowski,W (2153) -Panyushkin,B (2251) ICCF 2014 0-1 (60)}) 6... Bb4 7. O-O O-O 8. Bd2 (8. Bf4 Nbd7 9. Ndb5 a6 10. a3 Ba5 11. Nd6 Bc7 12. Nxc8 Bxf4 13. gxf4 Rxc8 14. e3 Qe7 15. Ne2 Ne4 16. Nd4 Nd6 17. Qe2 g6 18. Rfe1 Nc5 19. a4 Qd7 {Khrolenko,V (1984) -Shubin,V (2076) ICCF 2015 0-1 (98)}) 8... Nc6 9. Nxc6 bxc6 10. e4 Be7 11. Be3 Rb8 12. Rb1 Ba6 13. Re1 Rb7 14. a3 Qc7 15. b4 Rd8 16. exd5 cxd5 17. Bd4 { Deforel,J (2268)-Mary,P (2384) ICCF 2014 1/2-1/2}) (5... Bc5 6. Nb3 Be7 7. O-O O-O 8. e4 d6 9. Nc3 Nc6 10. Qe2 a6 11. a4 Bd7 12. Be3 Na5 13. Rfd1 Rc8 14. Nxa5 Qxa5 15. Qd2 Qh5 16. f3 Qg6 17. a5 {Jánosi,E (2338)-Siikaluoma,A (2551) ICCF 2009 0-1 (32)}) (5... Qc7 6. Nb5 Qb6 7. N1c3 Ng4 8. O-O a6 9. Na3 Ne5 10. Na4 Qa5 11. b3 Qc7 12. Nc4 Nxc4 13. bxc4 Nc6 14. Rb1 b5 15. Nc5 Bxc5 {0-1 (15) Leupold,V (2439)-Grayland,S (2404) ICCF 2012}) 6. O-O (6. c4 d5 7. cxd5 exd5 8. O-O Be7 9. Nc3 Nc6 10. Qa4 Bd7 11. Nxd5 Nxd5 12. Bxd5 Nb4 13. Qb3 Nxd5 14. Qxd5 Bc8 15. Qxd8+ Bxd8 16. e4 O-O 17. Kg2 Re8 {Folk Gilsanz,J (2069)-Van Wyk,A (2084) ICCF 2010 1-0 (46)}) 6... Qc7 7. b3 (7. Nb3 Be7 8. Bf4 d6 9. c4 Nbd7 10. Na3 e5 (10... Nh5 11. Bd2 Rb8 12. Rc1 b6 13. g4 Nhf6 14. g5 Nh5 15. e3 g6 16. f4 Bb7 17. Bc3 Bxg2 18. Kxg2 O-O 19. Qf3 Ng7 20. h4 f6 21. Rh1 Rf7 22. Nc2 { Sladek,V (1917)-Davidson,J (2049) ICCF 2020 (34)}) 11. Bd2 Rb8 12. Rc1 Nc5 13. Bg5 O-O 14. Nd2 Ne6 15. Bxf6 Bxf6 16. Ne4 Be7 17. Nc3 Qa5 18. Nc2 Nc7 {Deforel, J (2327)-Lehtosaari,J (2354) ICCF 2006 1/2-1/2 (42)}) (7. Bg5 Be7 8. Nc3 h6 9. Bxf6 Bxf6 10. Ne4 Be7 11. c3 O-O 12. f4 d5 13. Nf2 Nc6 14. e3 Bd7 15. Nd3 Rac8 16. a4 Qb6 17. Qb3 Qa7 18. Rfe1 Na5 {Lucas,K-Souply,Y (1873) ICCF 2010 0-1 (42) }) (7. e4 Nc6 (7... g6 8. Nc3 Bg7 9. e5 Qxe5 10. Bf4 Qa5 11. Bd6 Qb6 12. Nb3 Nc6 13. Na4 Qb5 14. Nbc5 b6 15. c4 Qa5 16. Bxc6 bxc5 17. Bxa8 Bf8 18. Re1 Bxd6 19. Qxd6 {Malmström,J (1834)-Bozic,D (1578) ICCF 2017 1-0}) 8. Re1 (8. Nxc6 dxc6 9. a4 a5 10. Nd2 e5 11. Nc4 Be6 12. Qe2 Bc5 13. Bd2 O-O 14. Nxa5 Rxa5 15. b4 Bxf2+ 16. Rxf2 Raa8 17. a5 c5 18. b5 c4 19. Bb4 Rfd8 {Ferre Pérez,A (2056) -Guevara i Pijoan,J (2155) ICCF 2006 1/2-1/2 (26)}) (8. Be3 Be7 9. f4 d6 10. Nxc6 bxc6 11. e5 dxe5 12. fxe5 Qxe5 13. Bxc6+ Bd7 14. Bxa8 Qxe3+ 15. Kh1 O-O 16. Bg2 Bb5 17. Re1 Ng4 18. Rxe3 Nf2+ 19. Kg1 Nxd1 {Lagergren,H (2073) -Schiendorfer,R ICCF 2005 1/2-1/2 (29)}) 8... Nxd4 9. Qxd4 Bc5 10. Qc3 e5 11. b4 Bb6 12. Qxc7 Bxc7 13. c4 d6 14. Nc3 Be6 15. Nd5 Bxd5 16. exd5 a5 17. bxa5 Rxa5 18. Bd2 Ra7 {Tsirakovsky,S (2256)-Horwitz,D (2291) ICCF 2017 1/2-1/2}) (7. Nc3 Nc6 8. Be3 b5 9. Nxc6 dxc6 10. Bf4 Qa7 11. Bxc6+ Bd7 12. Bxd7+ Nxd7 13. Be3 Bc5 14. Bxc5 Qxc5 15. Ne4 Qc6 16. Rc1 Qxe4 17. f3 Qb7 18. e3 O-O {Anderson,L (899)-White,C (1726) ICCF 2018 0-1 (32)}) 7... d5 8. c4 dxc4 9. Bb2 Bd7 10. Qc2 Nc6 11. Qxc4 Rc8 12. Nd2 b5 13. Qd3 Ne5 14. Qe3 Neg4 15. Qf3 Qb6 16. Ne4 Be7 { Ellis,J (2250)-Silva Filho,A (2164) ICCF 2020 1-0 (60)}) 5... Nc6 (5... d5 6. Bg5 (6. Ne5 Bc5 7. a3 Nc6 8. Bg5 Nxe5 9. c3 dxc3 10. Nxc3 O-O 11. e4 d4 12. Bf4 Ng6 13. Nb5 e5 14. Bg5 a6 15. Bxf6 gxf6 16. Nc3 dxc3 17. bxc3 Qxd1 {Anderson,L (747)-Kapila,H ICCF 2021 0-1 (28)}) 6... Be7 7. c3 dxc3 8. Nxc3 O-O 9. Nd4 h6 10. Bf4 g5 11. Ndb5 gxf4 12. gxf4 Bd7 13. Qd4 a6 14. Na3 Nc6 15. Qd1 d4 16. Ne4 Nd5 17. Nc4 {Anderson,L (899)-Vieito Soria,L (1768) ICCF 2018 0-1 (26)}) (5... a6 6. Qxd4 Nc6 7. Qd3 d5 8. c4 e5 9. cxd5 e4 10. Qe3 Nb4 11. Ne1 Bf5 12. Qb3 Qxd5 13. Nc3 Qxb3 14. axb3 Rd8 15. Bg5 Be7 16. Bxf6 Bxf6 17. Nxe4 {Hladecek,M (2422)-Volek,S (2308) ICCF 2009 1-0 (71)}) 6. Nxd4 Qb6 (6... Bc5 7. Nb3 Be7 8. e4 d6 9. Be3 h5 10. h3 h4 11. g4 Nd7 12. f4 Rb8 13. Nc3 a6 14. a4 g5 15. Ne2 Rg8 16. a5 gxf4 17. Nxf4 b6 18. axb6 {Köntges,M (2351)-Warzecha,H (2249) ICCF 2015 1-0 (30)}) 7. Nb3 (7. Nxc6 bxc6 8. b3 Be7 9. c4 O-O 10. Qc2 Rd8 11. Nc3 Ba6 12. Na4 Qc7 13. Bf4 e5 14. Bg5 d6 15. Rad1 Rab8 16. Rd2 h6 17. Bxf6 Bxf6 18. Rfd1 Bg5 {Altrichter,U (2457)-Staniszewski,J (2509) ICCF 2012 1-0 (89)}) 7... d5 (7... Be7 8. Be3 (8. e4 O-O 9. Nc3 d6 10. Be3 Qc7 11. f4 a6 12. a4 b6 13. g4 Bb7 14. Qe2 Nd7 15. g5 Rfe8 16. Rf3 Nb4 17. Rh3 d5 18. a5 Bc5 19. Bf2 Rac8 {Osintsev,A-Galanov,S (2376) ICCF 2009 1/2-1/2}) (8. c4 Qa6 9. Na3 Bxa3 10. bxa3 Qxc4 11. Bb2 e5 12. f4 Qe6 13. fxe5 Ng4 14. Bh3 Qg6 15. Qd6 Qxd6 16. exd6 Nge5 17. Rac1 f6 18. Bxe5 Nxe5 19. Rc7 Kd8 {Kurylo,R (2227)-Voveris,G (2206) ICCF 2012 1-0 (55)}) 8... Qa6 (8... Qd8 9. c4 {1-0 (9) Radhey Derling, D-Parrales,C ICCF 2012}) 9. Nc3 d5 10. a4 Qc4 11. Nb5 O-O 12. c3 Qg4 13. h3 Qh5 14. Bc5 Qe5 15. a5 Bd7 16. Qd3 a6 17. N5d4 Bxc5 18. Nxc5 Qc7 19. b4 {Hladecek, M (2416)-Calugaru,V (2390) ICCF 2010 1/2-1/2 (34)}) 8. Nc3 (8. Be3 Qc7 9. Nc3 Be7 10. Nb5 Qb8 11. c4 dxc4 12. Nd2 (12. N3d4 Bd7 13. Nxc6 bxc6 14. Na3 c3 15. Nc4 cxb2 16. Rb1 O-O 17. Rxb2 Qc8 18. Qc2 Nd5 19. Rfb1 Nxe3 20. Nxe3 Bf6 21. Rb3 Rd8 22. Ng4 Bd4 23. e3 Bb6 {Alf,H (2340)-Liushnin,K (2312) ICCF 2011 1/2-1/ 2 (81)}) 12... O-O 13. Nxc4 e5 14. Nc3 Be6 15. Qa4 Bb4 16. Na3 Rc8 17. Rad1 a6 18. Nd5 Bxd5 19. Bxd5 Nxd5 {Jotov,H-Yordanova,S (2300) ICCF 2009 1/2-1/2}) (8. a4 Be7 9. a5 Qd8 10. Nc3 O-O 11. a6 bxa6 12. e4 Nxe4 13. Nxe4 dxe4 14. Bxe4 Bb7 15. Be3 Qc7 16. Nc5 Bxc5 17. Bxc5 Rfd8 18. Qe1 Rd7 19. Qc3 Rc8 {Maslakov,G (2281)-Lyamtsev,V (2275) ICCF 2016 1/2-1/2 (25)}) 8... Be7 9. e4 d4 10. Ne2 e5 11. c3 Bg4 (11... d3 12. Qxd3 O-O 13. Be3 Qc7 14. h3 Be6 15. Nc5 Bxc5 16. Bxc5 Rfd8 17. Qc2 b6 18. Be3 Nb4 19. Qb1 Bc4 20. cxb4 Bxe2 21. Rc1 Qd6 22. Rc3 Bd3 23. Qd1 {Dresher,K (1850)-Freire,D (1856) ICCF 2020 1/2-1/2 (34)}) 12. cxd4 exd4 13. Nbxd4 Nxd4 {0-1 (13) Dresher,K (1850)-Stevenson,G ICCF 2020}) (4... Be7 5. O-O cxd4 (5... O-O 6. dxc5 Bxc5 7. c4 Nc6 8. a3 a5 9. Nc3 h6 10. b3 d5 11. cxd5 exd5 12. Bb2 d4 13. Nb5 Qb6 14. Kh1 Qxb5 15. b4 Bb6 16. Nxd4 Bxd4 17. Bxd4 {Konovalenko,A (2110)-Chernov,I (2075) ICCF 2021 0-1}) 6. Nxd4 O-O 7. c4 Qc7 (7... e5 8. Nf5 Bc5 9. Nc3 d5 10. Qc2 d4 11. Nd5 Nxd5 12. cxd5 Na6 13. a3 Re8 14. b4 Bf8 15. e3 g6 16. Nh4 Bg7 17. exd4 exd4 18. Bb2 Nc7 19. Qc4 { Tanner,G (1608)-Jaszczowski,Z (1686) ICCF 2020 0-1 (27)}) 8. b3 d5 9. Nb5 Qd7 10. Bf4 Nc6 11. Kh1 d4 12. a4 e5 13. Bg5 h6 14. Bxf6 Bxf6 15. Nd2 Be7 16. f4 { Merzliakov,A-Nekhaev,A (2476) ICCF 2021 1/2-1/2 (36)}) (4... b5 5. Nc3 Bb7 6. Nxb5 Qa5+ 7. Nc3 cxd4 8. Qxd4 Nc6 9. Qd1 Ne4 10. Bd2 Nxd2 11. Qxd2 d5 12. O-O Bb4 13. Rfd1 Rd8 14. a3 Bxc3 15. bxc3 O-O 16. Rab1 {Deforel,J (2245)-Silin,V (2070) ICCF 2015 1/2-1/2 (27)}) (4... Qa5+ 5. c3 (5. Nbd2 cxd4 6. O-O Nc6 7. Nb3 Qc7 8. Nbxd4 a6 9. Nxc6 bxc6 10. c4 d5 11. Qc2 Bb7 12. cxd5 exd5 13. Nd4 Qb6 14. Nf5 Bc8 15. Bg5 Bxf5 16. Qxf5 Be7 {Migicovsky,M (2088)-Marconi,R (2100) ICCF 2008 1-0}) 5... cxd4 6. Nxd4 d5 7. O-O Be7 8. c4 dxc4 9. Qc2 O-O 10. Qxc4 Qh5 11. Nc3 e5 12. Ndb5 Be6 13. Qa4 Na6 14. Qh4 Qxh4 15. gxh4 Nc5 16. Be3 { Groffen,J (2184)-Kaczmarek,R (2163) ICCF 2020 1/2-1/2}) (4... h6 5. c4 (5. O-O d5 6. Nc3 c4 7. Ne5 Bd6 8. Nxf7 Kxf7 9. Nb5 Nc6 10. b3 a6 11. Nxd6+ Qxd6 12. bxc4 h5 13. cxd5 Nxd5 14. c4 Nf6 15. d5 exd5 16. cxd5 Rd8 {Anderson,L (832) -Treeby,M (1482) ICCF 2018 0-1 (35)}) 5... Be7 6. O-O cxd4 7. Nxd4 Nc6 8. e4 O-O 9. Nc3 Bb4 10. Nde2 d6 11. b3 a6 12. Bb2 e5 13. a3 Bc5 14. Qd3 Re8 15. Rad1 Nd4 16. Nxd4 {Mogstad,O (2152)-Buczinski,H (2025) ICCF 2019 1/2-1/2 (32)}) 5. c4 (5. O-O b6 (5... Qb6 6. dxc5 Bxc5 7. Nc3 (7. c4 Qa6 (7... Ng4 8. e3 h6 9. Nc3 a6 10. Na4 Qa7 11. Nxc5 Qxc5 12. b3 b5 13. Bb2 Rg8 14. Rc1 Rb8 15. h3 Nge5 16. cxb5 Qxb5 17. Qd6 Nxf3+ 18. Bxf3 Rb6 19. Ba3 {Giménez,J (1524)-Safari Nejad,R (1619) ICCF 2020 1-0 (30)}) 8. b3 d5 9. cxd5 Nxd5 10. Bb2 O-O 11. a3 Rd8 12. Qc2 Be7 13. Nc3 Nxc3 14. Bxc3 Bd7 15. b4 {1/2-1/2 (15) Lauritsen,N (2447)-Bulla,J (2443) ICCF 1999}) 7... Be7 8. a3 O-O 9. Be3 Qd8 10. Qd3 d5 11. Rad1 a6 12. Bf4 h6 13. b4 b5 14. e4 dxe4 15. Nxe4 Nd5 16. Qb3 Qb6 17. Ne5 { Carvalho,L (2185)-Flude,D (2134) ICCF 2009 1/2-1/2 (30)}) 6. c4 cxd4 7. Nxd4 Bb7 8. Nb5 Rc8 9. Nxa7 Nxa7 10. Bxb7 Rxc4 11. Nc3 d5 12. Ba6 Rc5 13. Bd3 Be7 14. Qa4+ Qd7 15. Be4 Nxe4 16. Qxd7+ Kxd7 {Baron,M (1835)-Rudd,J ICCF 2016 0-1 (29)}) 5... cxd4 6. Nxd4 Ne5 7. Nd2 Bc5 8. N4b3 Be7 9. O-O d5 (9... O-O 10. Nd4 d5 11. cxd5 Nxd5 12. N2b3 Bd7 13. e4 Nb6 14. f4 Nec4 15. e5 a5 16. Nc2 Na4 17. Rb1 Bb5 18. Qxd8 Rfxd8 19. Bxb7 Rab8 20. Bg2 Ncxb2 21. Bxb2 {Gottwald,B (2049) -Lautenbach,A (2230) ICCF 2010 0-1 (25)}) 10. cxd5 Nxd5 11. e4 Nb4 12. Qh5 Nbd3 13. f4 Nc6 14. Nc4 e5 {Torgersen,T (2049)-Fagerbekk,E ICCF 2007 1/2-1/2 (31)}) (3. Nc3 Bb4 (3... b6 4. Bg5 (4. e3 Bb7 5. Ne5 Be7 6. Bd3 O-O 7. f3 d6 8. Ng4 Nxg4 9. fxg4 Bxg2 10. Rg1 Bh4+ 11. Kd2 Bb7 12. Qf3 Bxf3 13. g5 c5 14. Ne4 Nc6 15. Nc3 cxd4 {Magill,R (1343)-Groenhout,R (1853) ICCF 2016 0-1}) (4. g3 Bb7 5. Bf4 Bb4 6. Bg2 Ne4 7. O-O Nxc3 8. bxc3 Bxc3 9. Rb1 O-O 10. Qd3 Ba5 11. h4 Nc6 12. Ng5 g6 13. h5 Nb4 14. Qe3 Bxg2 15. Kxg2 f6 {Anderson,L (761)-Bellisario,C (1426) ICCF 2020 0-1 (30)}) (4. e4 Bb4 5. Bg5 Bxc3+ 6. bxc3 h6 7. Bh4 g5 8. Nxg5 hxg5 9. Bxg5 d6 10. e5 dxe5 11. dxe5 Qxd1+ 12. Rxd1 Nd5 13. g3 Nxc3 14. Rd8# {1-0 (14) Lines,D (1626)-Smith,D ICCF 2018}) 4... Be7 5. e3 Bb7 6. Bb5 c6 7. Bxf6 Bxf6 8. Be2 O-O 9. Bd3 d5 10. Qe2 Nd7 11. Na4 b5 12. Nc5 Be7 13. c3 Nxc5 14. Ne5 Nxd3+ 15. Qxd3 {Magill,R (1178)-Harris,S (1533) ICCF 2018 0-1 (35) }) (3... a6 4. e4 Bb4 (4... d6 5. Bc4 b5 6. Bd3 h6 7. b3 Nc6 8. O-O g6 9. Re1 Bg7 10. Ne2 Nb4 11. Ba3 Nxd3 12. Qxd3 Bb7 13. b4 Bxe4 14. Qc3 Rc8 15. Ng3 Bxf3 16. Qxf3 {Van Camp,K-Williams,R ICCF 2010 0-1 (54)}) 5. Bd3 b5 6. e5 Bxc3+ 7. bxc3 Nd5 8. Bg5 Ne7 9. O-O Bb7 10. Nd2 O-O 11. Qh5 g6 12. Qh4 d6 13. Bxe7 Qe8 14. Bf6 Nd7 15. Qh6 {Kokorin,V (2231)-Williams,R (1630) ICCF 2011 1-0}) (3... c5 4. Ne5 d6 5. Nc4 cxd4 6. e3 dxc3 7. bxc3 Nc6 8. Na3 a6 9. Nc4 Be7 10. f3 b5 11. g3 bxc4 12. g4 O-O 13. g5 Nd7 14. Bxc4 Bxg5 15. Qd3 {Magill,R (1308) -Wilson,N (1570) ICCF 2017 0-1}) (3... Be7 4. e4 d5 5. e5 Nh5 6. Be2 g6 7. O-O O-O 8. Nd2 Nc6 9. Nb3 Re8 10. Bxh5 gxh5 11. Qxh5 Bf8 12. Qg4+ Kh8 13. Bg5 Be7 14. f4 Rg8 15. Qh5 {Brito,A-Lima,J ICCF 2009 1-0}) (3... h6 4. g4 Nxg4 5. Ne5 Qh4 6. Ne4 Nxe5 7. Be3 Qxe4 8. Rg1 Nc4 9. a3 Nxb2 10. Qc1 Nc4 11. Rg3 Bd6 12. Rb1 Bxg3 13. hxg3 Nxe3 14. fxe3 d5 15. Kd1 {Whittle,P (1410)-Pettigrew,S (1485) ICCF 2017 0-1 (33)}) 4. g3 (4. Bd2 c5 (4... d5 5. a3 Nc6 (5... Be7 6. e3 O-O 7. Ne5 c5 8. dxc5 Bxc5 9. Ng4 Nfd7 10. h4 f5 11. Nh2 Qxh4 12. g3 Qd8 13. Nf3 Nc6 14. Nb5 Nf6 15. Bc3 Ne4 16. Bd3 a6 17. Nbd4 {Gradisar,M-Kovac,S ICCF 2005 0-1 (34)}) 6. axb4 O-O 7. Na4 Ne4 8. Nc5 Nxc5 9. bxc5 Re8 10. Bg5 f6 11. Bh4 h6 12. e3 e5 13. dxe5 Nxe5 14. Nd4 c6 15. Bd3 Qe7 16. O-O {Mottinger,H (1317)-Skoumal, R ICCF 2021 1/2-1/2}) (4... b6 5. e3 O-O 6. Be2 Nc6 7. O-O Bb7 8. Bb5 a6 9. Bxc6 Bxc6 10. Ne5 Bb7 11. a3 Be7 12. b4 d6 13. Nd3 c5 14. bxc5 dxc5 15. dxc5 bxc5 16. Na4 {Adabbo,G-Piscopia,C ICCF 2011 0-1}) (4... Qe7 5. e3 d6 6. a3 Bxc3 7. Bxc3 Ne4 8. Qd3 f5 9. Nd2 Nxc3 10. Qxc3 O-O 11. Be2 b6 12. O-O-O Bb7 13. Rhg1 c5 14. dxc5 bxc5 15. Nc4 d5 16. Ne5 {Qweitin,E-Elisei,B (1889) ICCF 2018 1/2-1/2}) (4... O-O 5. a3 Bd6 (5... Bxc3 6. Bxc3 Ne4 7. e3 b6 8. Qe2 f5 9. Qb5 Bb7 10. Bb4 d6 11. Bd3 Bc6 12. Qc4 Bd5 13. Bxe4 Bxc4 14. Bxa8 c6 15. Bb7 a5 16. b3 Bd5 17. Bxc6 {Tan,A-Rogers,D (1779) ICCF 2015 0-1 (31)}) 6. e3 Nc6 7. Bd3 Ng4 8. Be2 Qf6 9. h3 Qh6 10. Bd3 b6 11. e4 Bf4 12. Qe2 Bxd2+ 13. Qxd2 Qxd2+ 14. Nxd2 Nf6 15. d5 exd5 16. g4 {Magill,R (1374)-Ramsay,W (1508) ICCF 2016 1-0 (33) }) 5. e3 Nc6 6. Bb5 a6 7. Bxc6 dxc6 8. a3 Bxc3 9. Bxc3 Ne4 10. Qd3 Nxc3 11. Qxc3 cxd4 12. Qxd4 Qxd4 13. Nxd4 e5 14. Nb3 b6 15. O-O Be6 {Lines,D (1689) -Rodman,J ICCF 2015 0-1 (36)}) (4. a3 Bxc3+ 5. bxc3 O-O 6. Bg5 h6 7. Bh4 b6 8. e4 d6 9. e5 dxe5 10. Nxe5 Bb7 11. f3 Nbd7 12. f4 Qe8 13. Rg1 Nd5 14. Qd2 Nxe5 15. fxe5 c5 {Bishop,E (1546)-Dunks,P (2015) ICCF 2019 0-1 (47)}) (4. Bg5 h6 5. Bxf6 Bxc3+ 6. bxc3 Qxf6 7. Qd3 O-O 8. O-O-O Nc6 9. Rg1 b6 10. e4 d5 11. exd5 exd5 12. Be2 Bf5 13. Qe3 Rfe8 14. Qd2 a6 15. g4 Bg6 {Ziman,S-Kormanovic,J ICCF 2008 0-1 (39)}) (4. Qd3 O-O 5. Bd2 Nc6 6. Ne5 Nxe5 7. dxe5 Ng4 8. Qd4 Bxc3 9. Bxc3 Nh6 10. h3 Nf5 11. Qe4 Rb8 12. e3 b6 13. Qf4 Bb7 14. e4 Ne7 15. Rd1 Ng6 { Ridout,P (1500)-de Wit,W (1630) ICCF 2018 1-0 (44)}) (4. e3 O-O 5. Bd2 d5 6. Bd3 a6 7. O-O Nc6 8. Ne2 Bxd2 9. Qxd2 h6 10. Ng3 Qd6 11. a3 e5 12. b4 e4 13. b5 axb5 14. Bxb5 exf3 15. gxf3 Rxa3 {Hoffmeister,S-Dogan,M ICCF 2012 1-0}) 4... O-O (4... Ne4 5. Qd3 d5 6. Bg2 Bxc3+ 7. bxc3 O-O 8. c4 Nc6 9. Ba3 Re8 10. O-O Na5 11. Ne5 Nf6 12. cxd5 exd5 13. Qc3 b6 14. Bb4 Nb7 15. Qd3 c5 16. Ba3 { Theis,B (1714)-Phillips,P (1997) ICCF 2017 1-0 (34)}) (4... b6 5. Bg2 Bxc3+ 6. bxc3 Bb7 7. O-O O-O 8. Re1 d6 9. c4 Nbd7 10. a4 h6 11. a5 bxa5 12. Bf4 Re8 13. Rxa5 c5 14. Rb5 Bc6 15. Rb3 e5 16. dxe5 {Carapinha,F (1865)-Cardenas,I (1708) ICCF 2010 1-0 (31)}) 5. Bg2 d5 6. O-O Nbd7 (6... c5 7. a3 Bxc3 8. bxc3 { 1-0 (8) Pino Munoz,F (1930)-Tobella Torras,J (1994) ICCF 2009}) 7. Qd3 c5 8. a3 Ba5 9. Bg5 cxd4 10. Qxd4 Bb6 11. Qd3 h6 12. Be3 Bxe3 13. Qxe3 b6 14. Rfd1 Qc7 { Skripko,R (2173)-Talos,D (2329) ICCF 2006 1/2-1/2 (77)}) (3. Nbd2 c5 (3... Bb4 4. c3 Bd6 5. e4 Bf4 6. Bd3 O-O 7. O-O Ng4 8. Re1 Nc6 9. Nf1 e5 10. h3 Nf6 11. d5 Ne7 12. Bxf4 exf4 13. Bc2 d6 14. Qd3 Ng6 15. e5 {Wilson,N (1615)-Safari Nejad,R ICCF 2014 0-1 (41)}) 4. e4 (4. e3 b6 5. e4 (5. g3 Bb7 6. Bg2 Be7 7. O-O O-O 8. c4 Nc6 9. b3 d5 10. dxc5 bxc5 11. Bb2 Qc7 12. cxd5 exd5 13. a3 Rfd8 14. Rc1 Nd7 15. Qc2 Nf8 16. Rfd1 a5 {Weber-Widmer,D (2341)-De Bari,V (2466) ICCF 2020 1/2-1/2 (29)}) 5... d5 6. Bb5+ Bd7 7. Bxd7+ Qxd7 8. exd5 cxd4 9. Nb3 Qxd5 10. Nbxd4 Nc6 11. Be3 Bd6 12. O-O Ne5 13. Nxe5 Bxe5 14. c3 O-O 15. Nf3 Rfd8 { Zazzeri,M-Macchia,G (1834) ICCF 2013 1/2-1/2 (39)}) 4... cxd4 5. e5 Nd5 6. Nxd4 d6 (6... Qc7 7. N2f3 a6 8. Be2 b5 9. O-O Bb7 10. c3 Nc6 11. Re1 Nxd4 12. Nxd4 d6 13. exd6 Bxd6 14. h3 O-O 15. Bf3 Rfd8 16. Bg5 Rd7 17. Qe2 h6 18. Bd2 { Benson,K-Buganza,N ICCF 2019 0-1 (26)}) 7. Nc4 dxe5 8. Nxe5 Bb4+ 9. Bd2 O-O 10. c4 Qb6 11. Nb3 Qc7 12. Ng4 Bxd2+ 13. Qxd2 Nd7 14. cxd5 exd5 {Schneider,K (2320) -Wächtler,S (2447) ICCF 2007 1-0 (33)}) (3. c3 b6 (3... Be7 4. Nbd2 O-O 5. e4 d5 6. e5 Nfd7 7. Nb3 c5 8. Be3 c4 9. Nbd2 Nc6 10. Qc2 f6 11. exf6 Nxf6 12. h3 b5 13. Be2 a5 14. O-O Qc7 15. Rfe1 {Zondervan,F (1560)-Campani,P (1587) ICCF 2018 0-1 (27)}) 4. Bg5 (4. c4 Bb7 5. Nc3 Bb4 6. Bd2 O-O 7. e3 Bxc3 8. Bxc3 Ne4 9. Bd3 Nxc3 10. bxc3 h6 11. O-O d6 12. Bc2 Nd7 13. Qd3 f5 14. Qe2 Nf6 15. Nd2 Qd7 {Freire,D (1931)-Gross,M (2203) ICCF 2017 0-1 (59)}) (4. h3 Bb7 5. Bg5 Be7 6. Nbd2 O-O 7. e3 c5 8. dxc5 bxc5 9. Be2 d5 10. O-O Nbd7 11. Bxf6 Bxf6 12. Nh2 Be5 13. Qc2 Qc7 14. Ng4 Bd6 15. Bd3 h5 {Toye,D (1632)-Carey,G ICCF 2019 0-1 (27)}) (4. g3 Bb7 5. Bg2 d6 (5... Be7 6. O-O d5 7. Ng5 O-O 8. Qd3 Nbd7 9. c4 dxc4 10. Qxc4 Nd5 11. e4 Nb4 12. Bd2 Ba6 13. Bxb4 Bxc4 14. e5 Bxf1 15. Bxe7 Qxe7 16. Bxf1 Qxg5 17. Bg2 {Anderson,L (873)-Lamy,O (1585) ICCF 2020 0-1}) 6. O-O h6 7. Nbd2 Be7 8. c4 O-O 9. d5 e5 10. Nh4 a5 11. Nf5 Bc8 12. Nb3 Bxf5 13. c5 bxc5 14. Bd2 c6 15. Bxa5 Rxa5 {Anderson,L (1283)-Olsen,S (1649) ICCF 2015 0-1 (30)}) 4... Bb7 (4... h6 5. Bxf6 Qxf6 6. e4 Bb7 7. Bd3 d6 8. Nbd2 Nd7 9. Qc2 g5 10. h3 h5 11. O-O-O O-O-O 12. Kb1 g4 13. Ne1 Kb8 14. Nc4 c5 15. hxg4 hxg4 16. Rxh8 {Brown,F-Skorna,U (2378) ICCF 2006 0-1}) 5. Nbd2 Be7 6. Bxf6 (6. h4 d6 7. e3 Nbd7 8. Bd3 c5 9. e4 Qc7 10. Qe2 h6 11. Bf4 cxd4 12. cxd4 Rc8 13. O-O O-O 14. a4 a5 15. Rfe1 Rfd8 16. Bh2 Nf8 17. Nb1 Ng6 {Brotherton,T (1793) -Ward,R (2126) ICCF 2010 1-0 (64)}) 6... Bxf6 7. e4 O-O 8. e5 Be7 9. Bd3 d5 10. h4 h6 11. Rc1 Nd7 12. Nh2 Rb8 13. Ng4 f5 14. exf6 Nxf6 {Lehtinen,P (2229) -Doderer,H (2233) ICCF 2014 1/2-1/2 (58)}) (3. Bd2 c5 (3... d5 4. g3 Be7 5. Bg2 O-O 6. O-O c5 7. Nc3 c4 8. Bf4 a6 9. Ne5 Nfd7 10. b3 b5 11. e4 f6 12. exd5 fxe5 13. dxe6 Ra7 14. Bxe5 Nxe5 15. dxe5 {Anderson,L (1193)-Liles,C (1617) ICCF 2016 0-1 (37)}) 4. g3 (4. e3 d5 5. dxc5 Bxc5 6. Be2 O-O 7. O-O Qe7 8. a3 Nc6 9. Nc3 e5 10. h3 a5 11. b4 axb4 12. axb4 Rxa1 13. Qxa1 Bxb4 14. Qa2 e4 15. Nd4 Nxd4 {Selby,R (1368)-Karayilan,N ICCF 2013 0-1 (28)}) 4... Nc6 (4... d5 5. Bg2 Nc6 6. O-O cxd4 7. Bf4 Qb6 8. b3 Be7 9. Ne5 Nd7 10. e3 Ndxe5 11. exd4 Ng6 12. Bd2 Qxd4 13. c3 Qf6 14. Na3 Bxa3 15. Bc1 Bb4 16. Bb2 {Anderson,L (1193)-Mazza, S ICCF 2016 0-1 (27)}) 5. c3 d5 6. Bg5 h6 7. Bf4 Qb6 8. b3 cxd4 9. Bd2 Ne4 10. Bf4 dxc3 11. Bg2 Qxf2# {0-1 (11) Chugg,M (1397)-Wilkinson,J (2210) ICCF 2015}) (3. e4 Nxe4 4. Bd3 d5 (4... Nf6 5. O-O c5 6. Nc3 d5 7. Bg5 Nc6 8. Bb5 cxd4 9. Qxd4 Be7 10. Qd3 h6 11. Bxf6 Bxf6 12. Rad1 O-O 13. a4 Qc7 14. Qd2 Ne7 15. Rfe1 a6 16. Bd3 {Sheridan,N (1535)-Simons,K ICCF 2019 0-1 (39)}) 5. O-O Bd6 6. Re1 Nf6 7. c4 dxc4 8. Bxc4 O-O 9. Nc3 a6 10. Bg5 h6 11. Bxf6 Qxf6 12. Ne4 Qe7 13. Nxd6 cxd6 14. a4 Nd7 {Dewald,H (1869)-Bulgarini Torres,M (2234) ICCF 2015 0-1 (47)}) (3. b3 b6 (3... Nc6 4. Bb2 d5 5. Nc3 Bd6 6. e3 O-O 7. Qd3 e5 8. dxe5 Nxe5 9. Nxe5 Bxe5 10. f4 Bd6 11. O-O-O c6 12. h3 Qe7 13. g4 Re8 14. Re1 Bxf4 15. Bg2 {Rixon,A (1551)-Cassell,R (1695) ICCF 2017 0-1 (48)}) 4. c4 Bb7 5. Bb2 Bb4+ 6. Bc3 Be7 7. e3 d5 8. Be2 c5 9. Ne5 O-O 10. O-O dxc4 11. Bxc4 Qc7 12. dxc5 Bxc5 13. Nd2 Rd8 14. Qe2 Nbd7 {Silva,F (2172)-Silva Filho,A (2146) ICCF 2020 1/2-1/2 (60)}) (3. Ne5 d6 (3... Be7 4. f4 O-O 5. e3 d6 6. Nc4 c5 7. Bd3 b5 8. Qf3 bxc4 9. Qxa8 Qa5+ 10. Nc3 Bd7 11. Qf3 cxd3 12. cxd3 cxd4 13. exd4 Nc6 14. Be3 Rb8 15. Qf2 {Melman,N-Nita,C ICCF 2009 0-1}) (3... Qe7 4. Nc3 d6 5. Nf3 Bd7 6. e4 Nc6 7. Nb5 O-O-O 8. Bd3 Nxe4 9. Nxa7+ Nxa7 10. Bxe4 h6 11. c3 Nc6 12. O-O Kb8 13. Bd3 e5 14. d5 Na7 15. Be3 {Nekhaev,A (2453)-Alifanov,O (2304) ICCF 2020 1-0 (32)}) 4. Nf3 c5 5. c3 d5 6. Ne5 Nc6 7. Nd2 cxd4 8. f4 dxc3 9. Nxc6 cxd2+ 10. Qxd2 bxc6 11. Qc2 Bb4+ 12. Bd2 Bxd2+ 13. Qxd2 Ne4 14. Qd4 c5 { Magill,R (1308)-Thakur,A (2247) ICCF 2017 0-1}) (3. h3 b6 (3... c5 4. e3 d5 5. dxc5 Bxc5 6. Nbd2 Nc6 7. a3 a5 8. c4 O-O 9. Qc2 Qe7 10. Be2 b6 11. O-O Bb7 12. b3 d4 13. exd4 Bxd4 14. Bb2 Bxb2 15. Qxb2 {Poletaev,V (2075)-Polyakov,D (2299) ICCF 2015 0-1 (44)}) 4. Bf4 d5 5. e3 (5. Nbd2 Ba6 6. c3 Bd6 7. Bg5 Bb7 8. Qc2 O-O 9. e3 c5 10. Be2 h6 11. Bh4 Nbd7 12. g4 g5 13. Bg3 Bxg3 14. fxg3 Qe7 15. O-O-O e5 {Velazquez Betancourt,A-Amezcua Luria,J ICCF 2018 1-0}) 5... Bd6 6. Bxd6 Qxd6 7. c3 O-O 8. Nbd2 Nbd7 9. Bd3 e5 10. dxe5 Nxe5 11. Nxe5 Qxe5 12. Nf3 Qe7 13. O-O c5 14. Qc2 Bb7 {Johnson,S-Ali,A ICCF 2021 0-1 (45)}) (3. Be3 d5 4. Nc3 Nbd7 5. g3 Bb4 6. Bg2 Ne4 7. Bd2 Bxc3 8. bxc3 O-O 9. Bf4 c5 10. O-O Nxc3 11. Qd3 cxd4 12. Nxd4 Na4 13. Qb5 Ndb6 14. Qb3 Bd7 {Vries,W (1703)-Knigge,M ICCF 2016 0-1 (47)}) (3. h4 g6 4. c3 d5 5. b4 Ne4 6. e3 Bg7 7. Qa4+ Qd7 { 0-1 (7) Piddington,M-Pursehouse,G ICCF 2006}) (3. a3 d5 (3... Be7 4. e3 (4. Nc3 d5 (4... O-O 5. e4 d5 6. e5 Ne4 7. Be2 Bd7 8. O-O Nxc3 9. bxc3 h6 10. c4 c6 11. cxd5 cxd5 12. c4 Bc6 13. cxd5 Bxd5 14. Qd2 g5 15. Bd1 Nc6 16. Bc2 {Hardwick,M (1122)-Campani,P (1450) ICCF 2018 0-1 (53)}) 5. h3 Nbd7 6. Bf4 c6 7. e3 Nf8 8. Bd3 Ng6 9. Bg5 Nd7 10. h4 O-O 11. Bxe7 Nxe7 12. g4 Qc7 13. h5 e5 14. dxe5 Nxe5 15. Nxe5 Qxe5 {Marturano,M (1953)-Gérard,A (1917) ICCF 2014 1/2-1/2 (26)}) (4. Bg5 O-O 5. e3 h6 6. Bxh6 gxh6 7. Nc3 Kh8 8. Be2 Rg8 9. Ne5 Rg7 10. O-O d6 11. Nf3 b6 12. Re1 Bb7 13. Bd3 Nbd7 14. e4 c5 15. e5 Nh5 {Hardwick,M (1236)-Graham, S ICCF 2019 0-1}) (4. c4 d5 5. cxd5 exd5 6. e3 c6 7. Be2 O-O 8. O-O Re8 9. Nc3 Bf5 10. Bd3 Bxd3 11. Qxd3 Nbd7 12. Bd2 Bd6 13. Rfe1 Ne4 14. Re2 Qf6 15. b4 Qg6 {Rylner,L (1958)-Nágel,J (1963) ICCF 2015 0-1 (33)}) 4... O-O 5. Bd3 d5 6. O-O b6 7. Nc3 (7. c4 Nbd7 8. cxd5 exd5 9. Bc2 Bd6 10. Qd3 a5 11. Ng5 Ba6 12. Qd1 Bxf1 13. Kxf1 h6 14. Nf3 c6 15. Nc3 Re8 16. e4 dxe4 17. Nxe4 Nxe4 18. Rb1 Ndf6 {Hardwick,M (1122)-Kudrya,A ICCF 2018 0-1 (29)}) 7... Bb7 8. Re1 c5 9. Be2 Nbd7 10. Bb5 Qc7 11. e4 dxe4 12. Ne5 Nxe5 13. dxe5 Rad8 14. Qe2 Qxe5 15. Ba6 { Hardwick,M (1234)-Gunn,T (2155) ICCF 2020 0-1}) (3... b6 4. Nc3 (4. Bg5 Bb7 ( 4... Be7 5. e3 (5. Nc3 Bb7 6. e4 Nxe4 7. Bxe7 Qxe7 8. Nxe4 Bxe4 9. Be2 O-O 10. O-O Nc6 11. Re1 d5 12. Bd3 Bxd3 13. Qxd3 a5 14. Qc3 Qd6 15. Ne5 Nxe5 16. dxe5 Qd7 {Hardwick,M (1236)-Schilleci,C (1829) ICCF 2019 0-1 (35)}) 5... Bb7 (5... O-O 6. Bxf6 Bxf6 7. Nbd2 c5 8. Be2 d5 9. c3 Nd7 10. Ne5 Bxe5 11. dxe5 Nxe5 12. Nf3 Ng4 13. O-O Nf6 14. Rb1 c4 15. b3 Ne4 16. Qc2 cxb3 17. Rxb3 {Hardwick,M (1161)-Roy,R ICCF 2019 0-1 (45)}) 6. Be2 h6 7. Bxf6 Bxf6 8. O-O Nc6 9. Nbd2 O-O 10. Rb1 a5 11. Re1 Ne7 12. c4 g5 13. Bd3 Bg7 14. Be4 Bxe4 15. Nxe4 f5 16. Nexg5 {Hardwick,M (1214)-Bartsch,R (2323) ICCF 2020 0-1 (29)}) (4... h6 5. Bxf6 Qxf6 6. e3 Bb7 7. Nbd2 g5 8. h3 h5 9. c4 Qg7 10. Qa4 g4 11. Ng1 c5 12. Ne2 cxd4 13. Nxd4 g3 14. f3 Nc6 15. Nxc6 Qxb2 16. Rb1 {Hardwick,M (1345)-Hendrich,T (1826) ICCF 2013 0-1}) 5. Nbd2 d5 (5... Be7 6. e3 O-O 7. Be2 d6 8. c4 Nbd7 9. Bd3 c5 10. O-O h6 11. Bxf6 Bxf6 12. Bb1 cxd4 13. exd4 g6 14. Be4 Qc7 15. Bxb7 Qxb7 16. Qc2 Rac8 17. Rfc1 {Hardwick,M (1343)-Fletcher,A (1445) ICCF 2016 0-1 (45)}) 6. e3 Be7 7. Be2 Nbd7 8. Bb5 O-O 9. Bd3 c5 10. c4 Ne4 11. Bxe7 Qxe7 12. Ne5 Nxe5 13. dxe5 Qg5 14. Qf3 Qxe5 15. Nxe4 dxe4 {Hardwick,M (1284)-Cox,R (1760) ICCF 2017 0-1}) (4. h3 d5 5. Nc3 (5. c4 dxc4 6. Nc3 c5 7. Bf4 cxd4 8. Na2 Nc6 9. Ne5 Bb7 10. Qa4 Qd5 11. e3 b5 12. Qd1 Nxe5 13. Nc3 dxc3 14. Qxd5 Nxd5 15. Bxe5 cxb2 16. Rb1 Bxa3 {Arvidsson,D-Pardoe,I (1687) ICCF 2018 0-1}) 5... Be7 6. Bf4 Ba6 7. e3 Bxf1 8. Rxf1 O-O 9. Be5 Nbd7 10. Qd3 c5 11. Ng5 c4 12. Qe2 Nxe5 13. dxe5 Nd7 14. f4 Bxg5 15. fxg5 Qxg5 {Turan,C-Noble,M (2301) ICCF 2006 0-1}) (4. e3 Bb7 5. Be2 d5 6. Nc3 c5 7. Bb5+ Nbd7 8. Ne5 a6 9. Bxd7+ Nxd7 10. Qf3 Nxe5 11. dxe5 Be7 12. Ne2 Qc7 13. Qf4 g5 14. Qg3 O-O-O 15. Bd2 h5 {Hardwick,M (1181) -Kuznetsov,A ICCF 2019 0-1}) (4. g3 Bb7 5. Bg2 d5 6. O-O Be7 7. e3 O-O 8. c3 c5 9. Re1 Nc6 10. Nbd2 Rc8 11. b4 cxd4 12. cxd4 Nd7 13. Bb2 f5 14. Rc1 Rf6 15. b5 Na5 {Burgoyne,D-Reynolds,R ICCF 2012 0-1 (31)}) (4. Bf4 Bb7 5. Nbd2 d5 6. e3 Bd6 7. Bxd6 Qxd6 8. Be2 O-O 9. O-O Nbd7 10. c4 c5 11. cxd5 Nxd5 12. Ne4 Qe7 13. dxc5 Nxc5 14. Nxc5 Qxc5 15. Qc1 Rac8 {Hardwick,M (1465)-Cranmer,S (2065) ICCF 2014 0-1 (37)}) 4... Bb7 5. e3 (5. Bf4 Bd6 6. Bxd6 cxd6 7. Qd2 O-O 8. Qf4 d5 9. e3 Ne4 10. Nxe4 dxe4 11. Nd2 d5 12. Bb5 Nc6 13. O-O Ne7 14. c3 f5 15. Qh4 a6 16. Be2 Rc8 {Gauna,J (2180)-Reyes Maldonado,C (2263) ICCF 2014 1/2-1/2 (40)}) ( 5. e4 Nxe4 6. Nxe4 Bxe4 7. Be2 Bb7 8. O-O Be7 9. Re1 O-O 10. Bd3 c5 11. d5 Bxd5 12. c4 Bb7 13. Be4 Bxe4 14. Rxe4 Nc6 15. Rg4 d6 16. Bh6 Bf6 {Hardwick,M (1168) -Neil,C (1342) ICCF 2018 1-0}) 5... d5 6. Bb5+ (6. Ne5 Be7 7. Bb5+ c6 8. Nxc6 Nxc6 9. Qe2 O-O 10. Ba6 Bxa6 11. Qxa6 Rc8 {0-1 (11) Hardwick,M (1214)-Daróczy, S (2154) ICCF 2020}) 6... Nbd7 7. Ne5 a6 8. Bxd7+ Nxd7 9. Qf3 Nxe5 10. dxe5 c5 11. Ne2 Qg5 12. Qf4 Qxg2 13. Rf1 Qg6 14. Kd1 Qh5 15. Qa4+ {Hardwick,M (1236) -Kuznetsov,A ICCF 2019 0-1 (31)}) (3... Nc6 4. Nc3 (4. Bg5 Be7 5. e3 O-O 6. Bxf6 Bxf6 7. Bd3 b6 8. Nbd2 Bb7 9. e4 Re8 10. e5 Be7 11. Qe2 d6 12. O-O dxe5 13. dxe5 Nd4 14. Nxd4 Qxd4 15. Nf3 Qxb2 {Hardwick,M (1122)-Fletcher,A (1466) ICCF 2018 1-0}) 4... d5 5. e3 a6 (5... Bd6 6. Be2 O-O 7. O-O a6 8. Bd3 Re8 9. e4 dxe4 10. Nxe4 h6 11. Nxf6+ Qxf6 12. Be2 e5 13. dxe5 Nxe5 14. Nxe5 Qxe5 15. g3 Qxe2 16. Qxe2 Rxe2 17. Rd1 {Hardwick,M (1168)-Gilbert,R (1760) ICCF 2018 0-1 (29)}) 6. Bd3 Bd6 7. e4 dxe4 8. Nxe4 Be7 9. Nxf6+ Bxf6 10. Be3 Nxd4 11. Bxd4 Bxd4 12. Nxd4 Qxd4 13. Rb1 Qd5 14. O-O Bd7 15. Be2 {Hardwick,M (1168) -Gilbert,R (1760) ICCF 2018 0-1 (51)}) (3... c5 4. e3 (4. Bg5 cxd4 (4... Nc6 5. e3 cxd4 6. exd4 h6 7. Bxf6 Qxf6 8. Be2 d5 9. Nc3 Bd6 10. O-O O-O 11. Rb1 a6 12. Re1 b5 13. b4 Bb7 14. Qd3 Bc7 15. Na2 Bb6 16. c3 {Hardwick,M (1207)-Raby,E (2013) ICCF 2017 0-1 (34)}) 5. Qxd4 (5. Nxd4 Nc6 6. Nxc6 bxc6 7. e3 Qa5+ 8. Qd2 Qxg5 9. Nc3 d5 10. Rd1 Bd6 11. e4 Qxd2+ 12. Rxd2 O-O 13. exd5 exd5 14. Be2 Rb8 15. Na4 Re8 16. O-O Ne4 {Hardwick,M (1214)-Messinger,B ICCF 2020 0-1 (38)}) 5... Nc6 6. Qc3 d5 7. e3 Be7 8. Bb5 O-O 9. Bxc6 bxc6 10. Nbd2 c5 11. O-O Ba6 12. Rfe1 Rc8 13. Ne5 Qc7 14. Ndf3 Ne4 15. Qb3 Nxg5 {Hardwick,M (1214)-Anderton, M ICCF 2020 0-1 (29)}) (4. Bf4 cxd4 5. Nxd4 e5 6. Bxe5 Qa5+ 7. c3 Qxe5 8. e3 Bc5 9. Bc4 Nc6 10. Nf3 Qe7 11. b4 Bb6 12. Qd3 d6 13. h3 O-O 14. O-O Ne5 15. Qc2 Nxf3+ {Turan,C-Rozenblum,J ICCF 2006 0-1}) (4. Qd2 cxd4 5. Qxd4 d5 6. Bg5 Be7 7. Nc3 Nc6 8. Qa4 Bd7 9. Ne5 Nxe5 10. Qf4 Nc4 11. Rb1 h6 12. Bxf6 Bxf6 13. e3 Nxa3 14. bxa3 Bxc3+ 15. Kd1 e5 {Hardwick,M (1278)-Reshef,D (1978) ICCF 2020 0-1 }) (4. dxc5 Bxc5 5. Bg5 Qb6 6. Be3 Bxe3 7. fxe3 Ne4 8. b3 Qxe3 9. Qd3 Qf2+ 10. Kd1 d5 11. Nc3 Qb6 12. Ke1 Nf2 13. Qd4 Qxd4 14. Rd1 Qxc3+ 15. Rd2 Ne4 {Lyons, B-Latta,R ICCF 2015 0-1}) 4... d5 (4... g6 5. Be2 Bg7 6. O-O O-O 7. Nbd2 d5 8. c4 cxd4 9. exd4 Nc6 10. cxd5 Nxd5 11. Ne4 Qb6 12. Nc5 Nxd4 13. Nxd4 Qxc5 14. Nf3 Bd7 15. Rb1 Rac8 16. Be3 {Hardwick,M (1214)-Kristiansen,E (1492) ICCF 2020 1/2-1/2 (38)}) 5. Bb5+ (5. Nc3 Nbd7 6. Be2 a6 7. O-O Qc7 8. Re1 Bd6 9. g3 O-O 10. dxc5 Nxc5 11. Nd4 e5 12. Nf3 Be6 13. b4 Ncd7 14. Bb2 Nb6 15. Qd2 Bg4 16. Rad1 Bxf3 {Burton,S (2141)-Nettles,P ICCF 2014 0-1 (35)}) (5. c3 Nc6 6. Be2 b6 7. O-O Bd6 8. Bb5 Bd7 9. Re1 O-O 10. Bd3 Qc7 11. dxc5 Bxc5 12. b4 Bd6 13. g3 e5 14. b5 Na5 15. Bb2 e4 16. Be2 exf3 {Hulst,B (1611)-Thommen,J (1628) ICCF 2020 0-1 (33)}) 5... Nbd7 (5... Bd7 6. Bxd7+ Nbxd7 7. Nc3 (7. O-O Bd6 8. Bd2 O-O 9. c3 e5 10. dxe5 Nxe5 11. Nxe5 Bxe5 12. Qf3 Ne4 13. Be1 Qb6 14. b4 Qa6 15. Qf5 Bxh2+ 16. Kxh2 Qxf1 17. Bd2 Nxf2 18. Qxf2 Qxf2 {Hardwick,M (1343)-Cook,D (2269) ICCF 2017 0-1}) 7... Rc8 8. O-O Bd6 9. Re1 O-O 10. e4 cxd4 11. Nxd4 Rxc3 12. bxc3 Nxe4 13. Bb2 Nb6 14. Rb1 Nc4 15. Nf3 Qb6 16. Qd4 Bc5 17. Qd3 {Hardwick,M (1122)-TeVrucht,R ICCF 2018 0-1 (25)}) 6. O-O (6. c4 a6 7. Bxd7+ Bxd7 8. O-O Bd6 9. Nc3 Bc6 10. Re1 dxc4 11. dxc5 Bxc5 12. Qxd8+ Rxd8 13. Bd2 Bxf3 14. gxf3 Rxd2 15. Rab1 O-O 16. Red1 Rfd8 17. Rxd2 Rxd2 {Hardwick,M (1161)-Cabrera Trujillo,C (1659) ICCF 2019 0-1 (25)}) 6... a6 7. Bxd7+ Qxd7 8. Ne5 Qc7 9. c4 b5 10. cxb5 axb5 11. Qc2 Bd6 12. Nd2 c4 13. Ndf3 b4 14. Bd2 b3 15. Qc1 { Hardwick,M (1343)-Kocher,R ICCF 2016 0-1 (34)}) 4. Bg5 (4. e3 Be7 5. c4 (5. Bb5+ c6 6. Be2 Ne4 7. O-O Nd7 8. Nc3 f5 9. Bd2 Bd6 10. Ne5 Nxe5 11. dxe5 Bxe5 12. Bh5+ g6 13. Bf3 O-O 14. Rb1 Qd6 15. Nxe4 fxe4 16. Be2 Bxh2+ {Hardwick,M (1343)-Bicknell,G (1804) ICCF 2017 0-1 (33)}) (5. Be2 Nbd7 6. Nbd2 b6 7. O-O Bb7 8. Bd3 Bd6 9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 Bxe4 12. Re1 Bb7 13. c4 O-O 14. c5 bxc5 15. dxc5 Nxc5 16. Qc2 Bxf3 {Hardwick,M (1122)-Taffijn,M (1844) ICCF 2018 0-1 (29)}) 5... c5 6. dxc5 Bxc5 7. b4 Be7 8. Bb2 O-O 9. Nc3 Nbd7 10. cxd5 exd5 11. Nxd5 Nxd5 12. Qxd5 Nb6 13. Qe4 Rb8 14. Bd3 g6 15. Qe5 f6 { Kurpnieks,V (2173)-Hardwick,M (1480) ICCF 2015 1-0 (27)}) (4. Bf4 b6 (4... c5 5. e3 Nc6 6. Bb5 (6. Nc3 a6 7. h3 h6 8. Be2 b5 9. O-O Bb7 10. Qb1 cxd4 11. exd4 Bd6 12. Qc1 Qc7 13. Bxd6 Qxd6 14. Bd3 O-O 15. Re1 Rfc8 16. Ne2 Na5 17. Ra2 Ne4 {Krecak,Z (2314)-Morokova,L (2309) ICCF 2012 1/2-1/2 (54)}) 6... Qa5+ 7. Nc3 Ne4 8. Bxc6+ bxc6 9. O-O Nxc3 10. bxc3 Qxc3 11. Qd2 Qxd2 12. Nxd2 cxd4 13. exd4 c5 14. Nf3 cxd4 15. Rfd1 f6 16. Bd2 {Hardwick,M (1345)-Taylor,J ICCF 2013 0-1 (34)}) (4... Bd6 5. Bxd6 cxd6 6. e3 Qc7 7. Nbd2 e5 8. dxe5 dxe5 9. Bb5+ Bd7 10. Bxd7+ Nbxd7 11. O-O O-O 12. g3 Rfe8 13. Nh4 Nc5 14. Ndf3 Qd7 15. b4 Nce4 16. Qd3 {Hardwick,M (1424)-Ovcjak,L ICCF 2013 0-1}) 5. e3 Bb7 6. Ne5 Nbd7 7. Nd2 Nxe5 8. dxe5 Nd7 9. Qg4 g6 10. h4 Bg7 11. Nf3 h6 12. Bb5 a6 13. Bxd7+ Qxd7 14. a4 c5 15. O-O Qc7 {Stapinski,R (1840)-Demchenko,I (2139) ICCF 2018 0-1 (34)}) 4... c5 (4... Be7 5. e3 O-O (5... h6 6. Bxf6 Bxf6 7. Bd3 (7. Be2 c5 8. c3 Nd7 9. Qa4 e5 10. Nbd2 e4 11. Ne5 Bxe5 12. dxe5 Qg5 13. O-O O-O 14. f3 Qxe3+ 15. Kh1 Qxe2 16. Qd1 Qxd1 17. Raxd1 e3 18. Nb3 e2 {Hardwick,M (1345)-Beltins,G (1873) ICCF 2013 0-1}) 7... c5 8. Bb5+ Bd7 9. Bxd7+ Nxd7 10. Nbd2 Qb6 11. Rb1 cxd4 12. Nxd4 Bxd4 13. exd4 Qxd4 14. Nf3 Qe4+ 15. Qe2 Rc8 16. Qxe4 dxe4 17. Nd4 {Hardwick,M (1343)-Cooper,R (2009) ICCF 2016 0-1 (32)}) (5... a6 6. Be2 Ne4 7. Bxe7 Qxe7 8. O-O Nc6 9. Nbd2 b5 10. Ne5 Nxe5 11. dxe5 Bb7 12. Nxe4 dxe4 13. Qd4 O-O 14. Qb4 Qxb4 15. axb4 Rfd8 16. Rad1 Rxd1 17. Rxd1 {Hardwick,M (1343) -Williams,R (1292) ICCF 2016 1/2-1/2 (26)}) (5... c5 6. Bb5+ Bd7 7. Qe2 c4 8. Bxd7+ Nbxd7 9. O-O O-O 10. Nbd2 b5 11. b3 Rc8 12. bxc4 bxc4 13. c3 Ne4 14. Bxe7 Qxe7 15. Rfb1 e5 16. Rb7 a6 17. Ra7 {Hardwick,M (1168)-Britnell,C ICCF 2018 0-1 (48)}) 6. Bxf6 (6. Nc3 Nbd7 7. Bd3 c5 8. O-O b6 9. dxc5 bxc5 10. Bb5 Bb7 11. Bxd7 Qxd7 12. Ne5 Qc7 13. Nf3 Rfd8 14. Nb5 Qc6 15. Nc3 d4 16. exd4 Rxd4 17. Qe2 Rg4 {Hardwick,M (1261)-Kiddell,T (1956) ICCF 2019 0-1}) (6. Be2 h6 (6... Nbd7 7. Ne5 Nxe5 8. dxe5 Nd7 9. Bxe7 Qxe7 10. Nd2 Nxe5 11. Nf3 Nxf3+ 12. Bxf3 b6 13. O-O Bb7 14. Re1 Rad8 15. Qe2 c5 16. c3 c4 17. Rad1 f5 18. Rd4 {Hardwick, M (1495)-Holt,F (1644) ICCF 2015 0-1 (45)}) 7. Bxf6 Bxf6 8. O-O c5 9. c3 Nc6 10. Nbd2 b6 11. dxc5 bxc5 12. Qa4 Bd7 13. Bb5 Qc7 14. Nb3 a6 15. Bxc6 Bxc6 16. Qf4 e5 17. Qg3 Qb6 {Hardwick,M (1161)-Bourgault,J (1850) ICCF 2019 0-1 (27)}) 6... Bxf6 7. Qd3 (7. Be2 c5 8. O-O b6 9. Nbd2 Bb7 10. c4 cxd4 11. Nxd4 Bxd4 12. exd4 Nc6 13. Nf3 dxc4 14. Bxc4 Qf6 15. Be2 Rad8 16. Rc1 Nxd4 17. Nxd4 Rxd4 18. Qc2 Qg5 {Hardwick,M (1168)-Salzmann,S (2336) ICCF 2018 0-1 (28)}) 7... c5 8. c3 Qd6 9. c4 Qb6 10. Be2 Qxb2 11. Qc3 Qb6 12. O-O Nc6 13. Nbd2 cxd4 14. exd4 Nxd4 15. Nxd4 Bxd4 16. Qb4 {Hardwick,M (1214)-Glowinski,D (1755) ICCF 2020 0-1 (30)} ) (4... Nbd7 5. e3 a6 (5... h6 6. Bxf6 Nxf6 7. Bb5+ c6 8. Be2 b6 9. O-O Bd6 10. Nbd2 O-O 11. Bd3 c5 12. c4 Bb7 13. e4 dxe4 14. Nxe4 Nxe4 15. d5 exd5 16. cxd5 Bxd5 17. Re1 {Hardwick,M (1122)-Anfruns Garcia,S ICCF 2018 0-1 (34)}) 6. Nc3 b6 7. Bd3 Bb7 8. e4 h6 9. e5 hxg5 10. Nxg5 Ng8 11. Qd2 c5 12. O-O cxd4 13. Ne2 Nxe5 14. Nxd4 Nxd3 15. cxd3 Qf6 16. Ndf3 {Hardwick,M (1278)-Faust,D (1829) ICCF 2020 0-1}) (4... Nc6 5. e3 Be7 6. Be2 O-O 7. O-O Ne4 8. Bxe7 Qxe7 9. Nbd2 Nf6 10. Bd3 e5 11. Nxe5 Nxe5 12. dxe5 Qxe5 13. Nf3 Qxb2 14. Qb1 Qxb1 15. Rfxb1 b6 16. a4 {Hardwick,M (1234)-Croker,B (1577) ICCF 2020 0-1 (43)}) 5. e3 Nc6 ( 5... Nbd7 6. Bb5 Qa5+ (6... a6 7. Bxd7+ Bxd7 8. O-O cxd4 9. Qxd4 Be7 10. Rd1 O-O 11. c4 Re8 12. cxd5 Nxd5 13. Bxe7 Qxe7 14. Nc3 Bc6 15. Rac1 Rad8 16. Nxd5 Bxd5 17. e4 Bb3 18. Qc3 {Hardwick,M (1207)-Holt,F (1553) ICCF 2017 0-1 (34)}) 7. Nc3 Ne4 8. Bxd7+ Bxd7 9. O-O Nxc3 10. bxc3 f6 (10... Qxc3 11. Qd2 Qxd2 12. Nxd2 cxd4 13. exd4 Rc8 14. Rfc1 Ba4 15. c3 f6 16. Be3 Bd6 17. g3 O-O 18. Nf3 Rc4 19. Nd2 Rc6 20. Bf4 e5 21. dxe5 fxe5 22. Be3 {Hardwick,M (1214)-Robinson,A ICCF 2020 0-1 (49)}) 11. Bf4 (11. Bh4 Qxc3 12. Qd2 cxd4 13. Qxc3 dxc3 14. Bg3 e5 15. Rfd1 Bc6 16. Rab1 Bxa3 17. h3 Bb2 18. Ne1 e4 19. f3 Ke7 20. fxe4 dxe4 21. Bf2 a5 22. g3 a4 {Hardwick,M (1343)-James,A ICCF 2016 0-1 (35)}) 11... Qxc3 12. Qd2 Qxd2 13. Nxd2 g5 14. Bg3 h5 15. f3 cxd4 16. exd4 Rc8 17. Rfc1 { Hardwick,M (1284)-Richardt,M (2244) ICCF 2016 0-1 (27)}) (5... cxd4 6. Nxd4 (6. exd4 Nc6 7. Bb5 Qb6 8. Nc3 Bd7 9. Bxf6 gxf6 10. Rb1 O-O-O 11. O-O h5 12. Be2 Ne7 13. Nd2 Qxd4 14. Bxh5 Qe5 15. Bxf7 Qxh2# {0-1 (15) Hardwick,M (1181)-Thys, H (1773) ICCF 2019}) 6... Qb6 (6... Be7 7. Be2 Qb6 8. Nd2 e5 9. Bb5+ Kf8 10. N2f3 exd4 11. Nxd4 h6 12. Bxf6 Bxf6 13. O-O Bxd4 14. Qxd4 Qxb5 15. Qb4+ Qxb4 16. axb4 g6 17. Rfd1 Be6 18. c4 {Hardwick,M (1214)-Wölfelschneider,P (2384) ICCF 2020 0-1 (36)}) 7. Bb5+ Bd7 8. Bxd7+ Nbxd7 9. Nd2 Qxb2 10. Qb1 Qc3 11. Qd1 Ne4 12. N4b3 Nxg5 13. Qg4 Ne4 14. Qd1 Rc8 15. Rc1 Nxd2 16. Qxd2 Qxd2+ 17. Kxd2 {Hardwick,M (1278)-Dostál,S (1651) ICCF 2020 0-1 (42)}) (5... Qb6 6. Nbd2 cxd4 7. exd4 Qxb2 8. Qb1 Qxb1+ 9. Rxb1 Bxa3 10. Bb5+ Nc6 11. Bxc6+ bxc6 12. Bxf6 gxf6 13. O-O Bd6 14. c4 a5 15. c5 Bc7 16. Ra1 Ba6 17. Rfc1 {Hardwick,M (1214) -Fremmegaard,J (2193) ICCF 2020 0-1 (30)}) 6. Bb5 (6. Ne5 Qb6 7. Bxf6 gxf6 8. Nxc6 Qxb2 9. Nd2 bxc6 10. Qb1 Qxb1+ 11. Rxb1 cxd4 12. exd4 Bxa3 13. Bd3 a5 14. O-O Bb4 15. Nf3 Kd7 16. Rb3 Bd6 17. Ra1 a4 {Hardwick,M (1304)-Ward,R (2190) ICCF 2020 0-1 (28)}) 6... Qa5+ 7. Nc3 Ne4 8. Bxc6+ bxc6 9. O-O Nxc3 10. bxc3 Qxc3 (10... f6 11. Bh4 Qxc3 12. Qd2 Qc4 13. Qd3 Qxd3 14. cxd3 Ba6 15. Rfd1 g5 16. Bg3 g4 17. Ne1 cxd4 18. exd4 h5 19. f3 Rc8 20. fxg4 hxg4 21. Nc2 Rh7 22. Ne3 {Hardwick,M (1168)-Popov,V (2120) ICCF 2018 0-1 (34)}) 11. Qd2 Qxd2 12. Nxd2 f6 13. Bh4 cxd4 (13... h5 14. f3 cxd4 15. exd4 g5 16. Bf2 Rb8 17. Rab1 Rxb1 18. Rxb1 Bxa3 19. Rb3 Bd6 20. Be1 a5 21. Rb1 a4 22. Nf1 Rh7 23. Bb4 Rb7 24. c3 e5 25. Nd2 {Hardwick,M (1234)-Nair,D ICCF 2020 0-1 (30)}) 14. exd4 c5 15. dxc5 (15. c3 h5 16. Rfe1 g5 17. Bg3 h4 18. Bc7 Rh7 19. Ba5 cxd4 20. cxd4 Rb7 21. Reb1 Rxb1+ 22. Nxb1 Rb8 23. Nc3 Rb3 24. Kf1 Bxa3 25. Rb1 Rxb1+ 26. Nxb1 Bd6 {Hardwick,M (1304)-Ackley,P (2038) ICCF 2020 0-1 (34)}) 15... Bxc5 16. Nb3 Bb6 17. a4 a5 18. c3 e5 19. Rfc1 h5 20. c4 g5 21. Bxg5 fxg5 22. c5 Bc7 23. c6 Rb8 24. Rab1 Bf5 25. Rb2 Kf7 26. Rc3 d4 27. Rc5 Rb4 28. Rb5 Rb8 29. Rxb8 Rxb8 30. Kf1 Be6 31. Ke2 Rxb3 32. Rc2 d3+ 33. Kd2 e4 34. g3 dxc2 35. Kxc2 Rd3 { 0-1 (35) Hardwick,M (1181)-Lund,S (1340) ICCF 2019 1 d4 Nf6 2 Nf3 e6: Torre, -London and Colle Systems}) (3. e3 Bb4+ (3... g6 4. Bd3 (4. Nbd2 Bg7 5. Bc4 O-O 6. b3 d5 7. Bd3 Nc6 8. Nh4 Bd7 9. Qf3 e5 10. dxe5 Nxe5 11. Qe2 Nxd3+ 12. cxd3 c5 13. O-O Ng4 14. d4 cxd4 15. exd4 Bxd4 {Greenhill,C-Carrington,A (1611) ICCF 2014 0-1}) (4. c4 Bg7 5. Nc3 O-O 6. Bd3 d5 7. O-O b6 8. cxd5 exd5 9. b4 c6 10. Re1 Bb7 11. e4 dxe4 12. Nxe4 a5 13. bxa5 Rxa5 14. Nxf6+ Bxf6 15. Bd2 Ra7 { Markic,V (2291)-Hauser,J (2417) ICCF 2014 1-0 (40)}) (4. g3 Bg7 5. Bg2 O-O 6. O-O d5 7. c3 Nc6 8. a4 a6 9. Nbd2 Rb8 10. b4 b5 11. Nb3 Qd6 12. axb5 axb5 13. Bb2 Re8 14. Qe2 e5 15. dxe5 Nxe5 {Boege,H-Opitz,P (2209) ICCF 2010 1/2-1/2 (59) }) 4... Bg7 (4... c5 5. O-O Bg7 6. dxc5 Qc7 7. Nc3 Qxc5 8. e4 Nc6 9. Be3 Qa5 10. Bd2 O-O 11. Nd5 Qd8 12. Nxf6+ Bxf6 13. c3 Qc7 14. Be3 b6 15. Qa4 Bb7 16. Rad1 {Saunders,R-Ewan,R (2236) ICCF 2016 1/2-1/2 (33)}) 5. O-O (5. Nbd2 O-O ( 5... d5 6. O-O O-O 7. b3 b6 8. Ne5 Ne4 9. Nxe4 dxe4 10. Bxe4 Ba6 11. Bxa8 Bxf1 12. Qxf1 Nd7 13. Nxd7 Qxd7 14. Bf3 c5 15. Bb2 Qe7 16. c4 Rd8 17. Rd1 {Prati,A (1688)-Blanchard,A ICCF 2013 1-0 (28)}) (5... d6 6. O-O c6 7. c3 O-O 8. h3 Na6 9. Qc2 Nc7 10. e4 Rb8 11. Re1 b5 12. a3 Re8 13. e5 dxe5 14. Nxe5 Nfd5 15. Nxc6 Qd6 16. Nxb8 e5 17. c4 {MacMillen,A (1829)-Petrie,A (1535) ICCF 2014 1-0}) 6. O-O (6. e4 b6 7. O-O d5 8. exd5 Qxd5 9. c4 Qd6 10. b3 Bb7 11. Bb2 Ng4 12. g3 Nc6 13. c5 bxc5 14. h3 Nxf2 15. Rxf2 cxd4 16. Ne4 Qd8 17. Qd2 f5 {Conroy, J-Yeadon,G ICCF 2011 0-1 (82)}) 6... a6 7. c3 d5 8. Re1 Nc6 9. e4 dxe4 10. Nxe4 Ne7 11. b4 b5 12. Bb2 Nxe4 13. Bxe4 Rb8 14. Bc2 f5 15. Bb3 Nd5 16. Rc1 c6 { Davis,J (1603)-Acosta,E (1585) ICCF 2015 0-1 (29)}) 5... O-O 6. e4 d6 7. Nc3 ( 7. Qe2 Nc6 8. c3 e5 9. h3 Nh5 10. Be3 f5 11. exf5 Bxf5 12. Bxf5 Rxf5 13. dxe5 Nxe5 14. Nbd2 Qd7 15. Qd1 Nxf3+ 16. Nxf3 c6 17. g4 Rd5 18. Qb3 Nf6 { Stanishevski,A (2090)-Rozier,D (2106) ICCF 2014 1/2-1/2 (33)}) (7. Re1 c5 8. dxc5 dxc5 9. e5 Nd5 10. Bg5 Qc7 11. c4 Nb4 12. Nc3 N8c6 13. Nb5 Qd7 14. Be4 a6 15. Qxd7 Bxd7 16. Nd6 Nd4 17. Nxd4 cxd4 18. Be7 Rfb8 {Reichelt,H (2086)-Luey,R (2187) ICCF 2015 1-0 (37)}) 7... Nc6 (7... Nbd7 8. Bf4 b6 9. Re1 Bb7 10. Qd2 Re8 11. e5 Nd5 12. Nxd5 Bxd5 13. exd6 cxd6 14. Bxd6 Bxf3 15. gxf3 e5 16. f4 Qh4 17. Qe3 exd4 18. Qxe8+ Rxe8 19. Rxe8+ {Kappes,D (2194)-Jankowiak,A (2200) ICCF 2009 1/2-1/2}) 8. Bg5 h6 9. Be3 Ng4 10. Bd2 e5 11. d5 Nd4 12. h3 Nf6 13. Be3 Nh5 14. Bc4 Nxf3+ 15. Qxf3 {Vasile,C (2172)-Borwell,A (2251) ICCF 2013 0-1 (32) }) (3... c5 4. Bd3 (4. b3 b6 (4... Nc6 5. g3 Qa5+ 6. Bd2 Qb6 7. Bc3 Be7 8. Bg2 d5 9. O-O O-O 10. dxc5 Qxc5 11. Bd4 Nxd4 12. exd4 Qc7 13. a4 Rd8 14. c3 Ne4 15. Qc2 Bf6 16. c4 {Uxa,T-Laurenc,R ICCF 2012 0-1 (38)}) (4... g6 5. Bd3 d5 6. O-O h5 7. Bb2 h4 8. h3 Qc7 9. Nbd2 Nc6 10. a3 Bd6 11. dxc5 Bxc5 12. Bxf6 Rh5 13. Nxh4 d4 14. Ne4 Be7 15. Bxe7 Kxe7 16. Qf3 {Kocher,R (1495)-Treeby,M ICCF 2017 1-0}) 5. Bb2 Bb7 6. Nbd2 (6. c3 d5 7. Bd3 Nc6 8. Nbd2 Bd6 9. O-O O-O 10. Re1 Re8 11. h3 h6 12. c4 cxd4 13. exd4 Re7 14. Ne5 Rc7 15. f4 dxc4 16. Bxc4 Nb4 17. a3 Nbd5 {Gideon,D-Egan,M (2270) ICCF 2020 0-1 (34)}) (6. Be2 Be7 7. O-O cxd4 ( 7... O-O 8. Nbd2 cxd4 9. Nxd4 Qc8 10. Bf3 d5 11. c4 e5 12. Nb5 a6 13. Nc3 e4 14. Be2 dxc4 15. Nxc4 Qe6 16. Rc1 Nc6 17. a4 Rfd8 18. Qc2 Nb4 19. Qb1 { Pingitzer,H-Nemchenko,V (2129) ICCF 2010 0-1 (30)}) 8. exd4 O-O 9. c3 d5 10. Nbd2 Nbd7 11. Ne5 Nxe5 12. dxe5 Nd7 13. Nf3 Qc7 14. c4 dxc4 15. Bxc4 Bxf3 16. Qxf3 Nxe5 17. Bxe5 Qxe5 {Reyes Cortés,R (1653)-Ruiz,M ICCF 2016 0-1 (36)}) 6... cxd4 7. exd4 Nc6 8. a3 d5 9. Bd3 g6 10. O-O Bg7 11. Re1 O-O 12. Qe2 Nd7 13. Rad1 Rc8 14. c4 Ne7 15. Ne5 Nf5 {Ismailov,R-Elias,H (1880) ICCF 2016 0-1 (53)}) (4. c3 cxd4 (4... b6 5. Nbd2 Bb7 6. b3 Nc6 7. Bb2 d5 8. Be2 Bd6 9. O-O O-O 10. g3 Qe7 11. Nh4 Qd7 12. f4 Ne7 13. a4 Nf5 14. Ng2 Rac8 15. Bb5 Qc7 16. Qe2 {Mogstad,O (2170)-Sjøl,H (2246) ICCF 2016 1-0 (51)}) (4... d5 5. c4 Nc6 6. Nc3 a6 7. cxd5 exd5 8. Be2 Bf5 9. O-O c4 10. Ne5 Qc7 11. f4 b5 12. Bf3 Rd8 13. g4 Be4 14. g5 Bxf3 15. Qxf3 b4 16. gxf6 {Glover,S (2067)-Liloni,F ICCF 2021 1-0 (27)}) 5. cxd4 Nc6 (5... d5 6. Bd3 Nc6 7. Nbd2 Bd6 8. O-O e5 9. e4 Nxd4 10. Nxd4 exd4 11. exd5 O-O 12. Bc4 Bf5 13. Nf3 Bc5 14. Qb3 b6 15. Bg5 Qd6 16. Rae1 h6 17. Bh4 {Liles,C-Wilson,N (1578) ICCF 2015 0-1 (28)}) 6. Nc3 a6 7. Bc4 b5 8. Bd3 Bb7 9. Qc2 Rc8 10. Ng5 Nb4 11. Qd2 Nxd3+ 12. Qxd3 Bb4 13. O-O h6 14. Nd1 hxg5 15. a3 Bd6 {Miedema,H (887)-Dunn,J (1529) ICCF 2019 0-1}) (4. Be2 b6 (4... cxd4 5. exd4 d5 6. O-O Bd6 7. Re1 O-O 8. c3 Qc7 9. Bd3 Nc6 10. Qe2 a6 11. Ne5 Nd7 12. Bf4 Ndxe5 13. dxe5 Bc5 14. Qh5 g6 15. Qh4 Qb6 16. b3 {Sánchez Fernández,F (1965)-Pérez López,A (2028) ICCF 2014 1/2-1/2 (48)}) 5. O-O (5. Nc3 Bb7 6. O-O Be7 7. h3 O-O 8. Nh2 d5 9. Ng4 Nbd7 10. Nxf6+ Nxf6 11. a3 Rc8 12. Na2 Qc7 13. c3 e5 14. b4 cxd4 15. cxd4 Ne4 16. Bb2 Qc2 {Saint Louis,P (1644)-Scaramuzzo,G (2078) ICCF 2013 0-1}) 5... Bb7 6. Nbd2 Nc6 7. c3 d5 8. Qb3 Qc7 9. Rd1 Bd6 10. dxc5 Bxc5 11. Qc2 O-O 12. Bd3 Rac8 13. Ng5 h6 14. Ngf3 e5 15. Bf5 Rcd8 {Jezek,O (1732)-Köhler,J (2172) ICCF 2010 0-1 (71)}) (4. Nc3 Nc6 5. Be2 d5 6. O-O Be7 7. Re1 O-O 8. dxc5 Bxc5 9. Nd4 Bxd4 10. exd4 Qb6 11. b3 Qxd4 12. Bb2 Qxd1 13. Nxd1 Bd7 14. Bf3 Nb4 15. Re2 Rac8 {Burton,S (1883)-Dunks, P (1820) ICCF 2016 0-1 (40)}) (4. Nbd2 cxd4 5. exd4 Nc6 (5... d5 6. Bd3 Bb4 7. c3 Ba5 8. Ne5 O-O 9. O-O Nbd7 10. f4 Nxe5 11. fxe5 Nd7 12. Nf3 f6 13. exf6 Nxf6 14. Ne5 Bc7 15. Bg5 Bxe5 16. dxe5 Qb6+ 17. Kh1 {Gordon-Davis,P-Roberts,R (1529) ICCF 2018 1-0}) 6. Bd3 Nb4 7. Be2 Be7 8. O-O O-O 9. a3 Nbd5 10. Re1 Qc7 11. c4 Nf4 12. Bf1 b6 13. g3 Ng6 14. b3 Bb7 15. Bg2 d5 {MacMillen,A (1833)-Lindsalu,I (2194) ICCF 2005 0-1 (50)}) (4. dxc5 Bxc5 5. b3 d5 6. Bb5+ Bd7 7. Bxd7+ Nbxd7 8. Ba3 Bxa3 9. Qd4 Qb6 10. Qxb6 axb6 11. Nxa3 Rxa3 12. O-O O-O 13. Nd4 Rfa8 14. c4 dxc4 15. bxc4 Rxa2 {Randall,A-Glanvile,N ICCF 2020 0-1}) (4. Ne5 d5 5. Nc3 a6 6. Be2 Bd6 7. O-O O-O 8. f4 b5 9. g3 Bb7 10. a3 Nbd7 11. Bd3 Nb6 12. g4 Ne4 13. Bxe4 dxe4 14. dxc5 Bxc5 15. g5 Qc7 {Brown,S (1799)-Dunks,P (1868) ICCF 2016 0-1 (34)}) (4. g3 d5 5. Bg2 Be7 6. Ne5 Nc6 7. O-O O-O 8. Nc3 Qd6 9. Nb5 Qb8 10. Bd2 Nxe5 11. e4 cxd4 12. Bf4 dxe4 13. Bxe5 Qxe5 14. Na3 Bxa3 15. bxa3 b6 {Anderson,L (1343)-Broadway,D ICCF 2014 0-1 (25)}) 4... Nc6 (4... cxd4 5. exd4 Be7 6. O-O O-O 7. Nc3 (7. b3 d5 8. Nbd2 Nc6 9. a3 b6 10. Bb2 Qc7 11. Qe2 Bb7 12. Rfe1 Qf4 13. Rad1 Rac8 14. b4 g6 15. Rc1 Rfd8 16. c3 Qh6 17. Rc2 Rc7 18. c4 dxc4 {Gray,G (2055)-Juárez de Vena,A (2001) ICCF 2017 1-0 (44)}) 7... d5 8. Re1 Nc6 9. Bf4 Bd7 10. a3 Rc8 11. Ne2 (11. Rb1 Nh5 12. Be3 f5 13. Ne2 Qc7 14. c4 Nf6 15. c5 Ne4 16. b4 Bf6 17. b5 Ne7 18. Qc1 {Savoca,A-Junge,W (2327) ICCF 2006 1-0 (46)}) 11... Qb6 12. b3 Na5 13. Ne5 Bb5 14. Bxb5 Qxb5 15. a4 Qb6 16. Bg5 {Scott,R (1619)-Caressa,M (2106) ICCF 2008 0-1 (41)}) (4... b6 5. dxc5 (5. e4 cxd4 6. e5 Nd5 7. O-O Nc6 8. Re1 Bb7 9. Be4 Bb4 10. c3 dxc3 11. Bxd5 cxb2 12. Bxb2 Bxe1 13. Bxc6 Bxf2+ 14. Kxf2 dxc6 15. Qc2 c5 16. Nc3 O-O { Pirhot,T-Lima,J ICCF 2019 0-1 (37)}) 5... Bxc5 6. O-O O-O 7. Nc3 Bb7 8. e4 d5 9. e5 Ne4 10. Nb5 Nd7 11. c3 a6 12. Nbd4 Qc7 13. Bf4 h6 14. h3 b5 15. Qc1 Rac8 16. a3 {Margrave,A (1787)-Truelove,C (2004) ICCF 2015 0-1 (33)}) 5. O-O (5. b3 Be7 6. O-O (6. Bb2 O-O 7. Ne5 cxd4 8. exd4 d6 9. f4 dxe5 10. fxe5 Nd5 11. O-O f5 12. Rf3 g5 13. h3 Nf4 14. Bc4 Nxe5 15. Re3 Nxc4 16. bxc4 Bf6 17. Qf3 Bxd4 { Rasmussen,B-Graupera,C ICCF 2015 0-1}) 6... O-O 7. dxc5 Bxc5 8. Bb2 d5 9. a3 a6 10. Nbd2 b5 11. Qb1 Rb8 12. c4 bxc4 13. bxc4 d4 14. Ne4 Nxe4 15. Ne5 Nxe5 16. Bxe4 f5 {Nicholls,M (2237)-Boreika,V (2275) ICCF 2011 0-1}) (5. a3 b6 6. b3 Bb7 7. Bb2 cxd4 8. exd4 Be7 9. O-O O-O 10. Re1 Rc8 11. Nbd2 Re8 12. b4 d5 13. b5 Na5 14. Ne5 Bd6 15. Qe2 Qc7 16. f3 Nd7 {Bravo González,R (2117)-Morley,P (2245) ICCF 2010 0-1 (50)}) 5... a6 (5... d5 6. c4 dxc4 7. Bxc4 a6 8. Qa4 Bd7 9. Qb3 Na5 10. Qd3 b5 11. Nbd2 bxc4 12. Nxc4 Nxc4 13. b3 Nd6 14. dxc5 Bb5 { 0-1 (14) Cicman,J-Maqueda Guijarro,B ICCF 2013}) (5... Be7 6. dxc5 Bxc5 7. a3 d5 8. b4 Bd6 9. c4 Ne5 10. c5 Nxf3+ 11. Qxf3 Be5 12. Ra2 O-O 13. Bb2 Bxb2 14. Rxb2 a5 15. b5 e5 16. Qg3 Re8 17. Rc1 {Demian,V (2362)-Anderson,B (2470) ICCF 2013 1-0 (46)}) 6. Nbd2 b6 (6... d5 7. b3 b5 8. Bb2 c4 9. Be2 Bb7 10. c3 Be7 11. Qc2 Nd7 12. a4 O-O 13. Rfb1 h6 14. Ba3 Qc7 15. Ne1 Bxa3 16. Rxa3 Ne7 17. Ndf3 Nf5 18. axb5 {Malbasic,L (1874)-Zunkovic,S (2286) ICCF 2017 0-1 (54)}) 7. c3 (7. Re1 Bb7 8. c3 d5 9. b3 Bd6 10. Bb2 O-O 11. a3 b5 12. dxc5 Bxc5 13. a4 b4 14. c4 d4 15. exd4 Nxd4 16. Ne4 Nxe4 17. Bxe4 Bxe4 18. Rxe4 Nf5 {Sanner,Z (2331)-Novikov,S (2397) ICCF 2018 1/2-1/2 (34)}) 7... d5 8. a3 Bb7 9. Re1 Be7 10. dxc5 bxc5 11. e4 O-O 12. exd5 exd5 13. Nf1 Re8 14. Bf4 h6 15. h3 {Sadowski, M (2484)-Dhanish,P (2603) ICCF 2015 0-1 (76)}) (3... Be7 4. Bd3 (4. Be2 O-O 5. O-O b6 6. Nbd2 d5 7. Ne5 Bb7 8. Bb5 Nbd7 9. Nc6 Bxc6 10. Bxc6 {1-0 (10) Weggen, R (1747)-Pirttimäki,M (1713) ICCF 2015}) (4. b3 d5 5. Be2 O-O 6. Nc3 Bd7 7. Bd2 c5 8. O-O Nc6 9. Nb5 a6 10. Nc3 Rc8 11. a4 Nb4 12. Ra3 cxd4 13. Nxd4 Nc6 14. a5 Bxa3 15. Qa1 Bb4 {Miedema,H (887)-Cage,S (1517) ICCF 2019 0-1 (29)}) 4... Nc6 (4... d5 5. Nc3 c5 6. O-O c4 7. Be2 a6 8. b3 b5 9. bxc4 bxc4 10. Ne5 O-O 11. Rb1 Nfd7 12. Nxd7 Nxd7 13. e4 Nf6 14. Bf3 dxe4 15. Nxe4 Nd5 16. Bd2 { Jarmuz,F (1814)-Vaughan,J ICCF 2015 1/2-1/2 (41)}) (4... O-O 5. e4 d6 6. O-O b6 7. Nc3 a6 8. e5 Nfd7 9. Qe2 d5 10. Nd1 c5 11. c3 Nc6 12. Bd2 Qc7 13. Re1 Bb7 14. Bg5 h6 15. Bxe7 Nxe7 {0-1 (15) Bugay,A-Demchenko,I (2198) ICCF 2013}) 5. c3 (5. O-O O-O 6. a3 d5 7. b3 Bd6 8. Bb2 Ng4 9. c4 dxc4 10. bxc4 f5 11. c5 Be7 12. Nc3 b6 13. h3 Nf6 14. Qa4 Bd7 15. Qc4 Kh8 16. cxb6 axb6 {Bourgoin,C (1950) -Gulbis,H (1917) ICCF 2006 1-0 (51)}) 5... d5 6. Nbd2 (6. O-O Ne4 7. b4 a6 8. Qc2 f5 9. a3 O-O 10. c4 Bf6 11. Bb2 dxc4 12. Bxc4 Qd6 13. Rd1 Ne7 14. Bd3 Ng5 15. Nxg5 Bxg5 16. Nd2 Nd5 17. Nc4 Qc6 {Bourgoin,C (1828)-Cáceres,A ICCF 2009 1-0 (46)}) 6... Bd6 7. e4 dxe4 8. Nxe4 Nxe4 9. Bxe4 e5 10. d5 Ne7 11. O-O f6 12. Nh4 Qd7 13. Qh5+ Kd8 14. Be3 g5 15. Nf3 {Prochera,J-Ozdemir,Z ICCF 2004 1-0 (80)}) (3... Nc6 4. b3 (4. Bd3 h6 5. c3 d5 6. Nbd2 Be7 7. O-O O-O 8. Re1 a6 9. Ne5 Qd6 10. f4 Nh7 11. Qc2 f5 12. Ng6 Rf6 13. Nxe7+ Qxe7 14. Nf3 Bd7 15. Kh1 g5 {McLaughlin,E (1441)-Cadarett,J ICCF 2017 0-1 (60)}) 4... d5 (4... Bb4+ 5. c3 Be7 6. Bd3 b6 7. h3 Bb7 8. a3 O-O 9. O-O d5 10. Nbd2 a5 11. c4 Ba6 12. Qe2 Qd7 13. e4 Nd8 14. e5 Ne8 15. Bb1 c5 16. Qd3 {Walters,B (1560)-Harris,S (1605) ICCF 2016 0-1 (41)}) 5. Bb2 Bd6 6. Nbd2 Ng4 7. Bd3 e5 8. e4 dxe4 9. Bxe4 Nxd4 10. h3 Nf6 11. Nxd4 exd4 12. O-O c5 13. Re1 O-O 14. Qf3 Nxe4 15. Rxe4 {Pickles, S (1577)-Marchello,M ICCF 2013 0-1}) (3... c6 4. Bd3 h6 5. O-O Bd6 6. Nbd2 O-O 7. e4 Bc7 8. e5 Nh7 9. Bxh7+ Kxh7 10. Ne4 d6 11. Nfg5+ Kg8 12. Qh5 dxe5 13. Nf3 f5 14. Bxh6 fxe4 15. Qg4 {Accola,B (1677)-Kruse,P (1571) ICCF 2020 0-1}) (3... Bd6 4. Bd3 Nc6 5. a3 O-O 6. O-O Re8 7. c4 g6 8. c5 Be7 9. b4 Ng4 10. h3 Nf6 11. Nbd2 d5 12. Bb2 a6 13. Ne5 Nxe5 14. dxe5 Nd7 15. Qg4 {Enoksson,B (1320) -Lankinen,T (1475) ICCF 2020 1/2-1/2 (25)}) (3... a6 4. Bd3 d5 5. O-O Be7 6. b3 Nc6 7. a4 Nb4 8. Be2 O-O 9. Ba3 a5 10. c3 Na6 11. Bd3 Bxa3 12. Nxa3 c6 13. Bxa6 bxa6 14. Rb1 Rb8 15. c4 {Willis,J-Williams,R (1432) ICCF 2013 1-0 (36)}) (3... d6 4. Bd3 g6 5. c3 Bg7 6. e4 b6 7. O-O O-O 8. Re1 Bb7 9. h3 Nc6 10. Nbd2 e5 11. Bc2 Nd7 12. Nf1 exd4 13. cxd4 h6 14. Ne3 Nb4 15. Bb3 {Gideon,D-Parisi,C ICCF 2020 1-0}) 4. c3 (4. Bd2 Qe7 5. a3 Bxd2+ 6. Qxd2 O-O 7. Nc3 Nc6 8. O-O-O d5 9. h4 h6 10. Kb1 Bd7 11. Rg1 a6 12. g4 Ne4 13. Qe1 b5 14. g5 Nxc3+ 15. Qxc3 h5 { Rivas Terán,R-Moir,P (1620) ICCF 2014 1-0 (31)}) 4... Be7 (4... Ba5 5. Bd3 d5 6. O-O O-O 7. Nbd2 Nbd7 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4 Nf6 11. Bc2 b5 12. Bg5 h6 13. Bxf6 Qxf6 14. Qd3 g6 15. Qxb5 Bb6 16. Be4 {Kononenko,S-Grinsteinner,R (1525) ICCF 2017 1-0}) 5. Bd3 d5 6. Nbd2 O-O (6... Bd7 7. e4 dxe4 8. Nxe4 Bc6 9. Nxf6+ Bxf6 10. O-O O-O 11. Qe2 Qd5 12. Bf4 Rc8 13. Rfe1 Nd7 14. b4 {1-0 (14) Gionfriddo,M (1858)-Pili,G ICCF 2011}) 7. O-O c5 8. dxc5 (8. Qe2 b6 9. e4 Ba6 10. Bxa6 Nxa6 11. Qxa6 {1-0 (11) Doherty,T-MacGregor,C (1941) ICCF 2007}) (8. Ne5 Nfd7 9. f4 f5 10. b3 Nxe5 11. dxe5 Nc6 12. Qe2 Bd7 13. Bb2 a6 14. Kh1 b5 15. g4 g6 16. Rg1 Kh8 17. Nf3 Rb8 18. Rg3 c4 19. Bc2 Rg8 {Lesko,A-Pohjosmäki, R (2249) ICCF 2011 1/2-1/2 (39)}) 8... Bxc5 9. h3 a6 10. e4 Nxe4 11. Nxe4 dxe4 12. Bxe4 Qb6 13. Qe2 f5 14. Bc2 Re8 15. Bb3 Nd7 16. Re1 Nf8 17. Be3 h6 18. Nh4 Kh8 19. Rad1 Qc7 20. Bxc5 Qxc5 21. Qh5 Bd7 22. Ng6+ Kh7 23. Ne5 Re7 24. Nf3 Be8 25. Qh4 Ng6 26. Qg3 f4 27. Qg4 Kh8 28. Rxe6 h5 29. Qg5 Qxg5 30. Nxg5 Rxe6 31. Bxe6 Nf8 32. Bb3 Bc6 33. Nf7+ Kh7 34. Ne5 Be4 35. f3 Bg6 36. Nxg6 Kxg6 37. Rd6+ Kf5 38. Rb6 Rb8 39. Bd5 Ke5 40. Be4 g5 41. Rxb7 Rxb7 42. Bxb7 a5 43. Kf1 Nd7 44. Ke2 Nc5 45. Bc6 Kd6 46. Bb5 a4 47. Bc4 Ke5 48. b3 h4 49. b4 Nb7 50. Kd3 Nd6 51. a3 Nb7 52. Bb5 Kd5 53. Bxa4 Nd6 54. Bb3+ Kc6 55. a4 Nf5 56. Kc4 Ne3+ 57. Kd4 Kd6 58. a5 Nxg2 59. Bd5 Ne3 60. Be4 Kc7 61. Kc5 Kb8 62. a6 Ka7 63. b5 Nd1 64. c4 Nc3 65. Bb7 Na4+ 66. Kc6 g4 67. fxg4 f3 68. Kd6 f2 69. Bg2 Nc3 70. Kc6 Na4 71. g5 Nb6 72. c5 Nc8 73. Kc7 Ne7 74. b6+ Kxa6 75. Bf1+ Ka5 76. b7 Nd5+ 77. Kd8 Ne3 78. Be2 Kb4 79. b8=Q+ Kc3 80. Qe5+ Kd2 81. Ba6 Ke1 82. Qxe3+ Kd1 83. Qxf2 {1-0 (83) Wood,B-Sanchez Villacanas,J ICCF 2006 1 d4 Nf6 2 Nf3 e6: Torre, -London and Colle Systems}) 3... c5 (3... h6 4. Bh4 (4. Bf4 b6 (4... c5 5. e3 Qb6 (5... Nc6 6. Nc3 (6. c3 Nh5 7. Bg3 Nxg3 8. hxg3 d5 9. Be2 Bd6 10. dxc5 Bxc5 11. Nbd2 O-O 12. Kf1 Qf6 13. e4 Rd8 14. Qe1 Qe7 15. exd5 exd5 16. Nb3 Bb6 17. Qd2 Bf5 {Volkov,A (1831)-Künzel,U (2198) ICCF 2018 0-1 (39)}) 6... Qa5 7. Nd2 cxd4 8. Nc4 Qd8 9. exd4 d5 10. Nb5 dxc4 11. Nc7+ Ke7 12. Nxa8 Nd5 13. Bxc4 Nxf4 14. Bf1 Bd7 15. Qd2 Ng6 16. Qe3 Qxa8 17. d5 {Dojcinovic,M (1786)-Frica,S ICCF 2013 0-1 (54)}) (5... b6 6. Nc3 a6 7. d5 d6 8. a4 Be7 9. e4 Nh5 10. Be3 { 1-0 (10) García Gil,J (2307)-Suárez Rodríguez,J (1972) ICCF 2007}) 6. b3 (6. Qc1 Nc6 7. c3 Nh5 8. Be5 d6 9. dxc5 Qxc5 10. Bd4 Nxd4 11. Nxd4 Bd7 12. Nd2 Nf6 13. Bd3 d5 14. O-O e5 15. N4b3 Qd6 16. Qc2 e4 17. Be2 {Espinoza,J (2242)-Ward, B (2309) ICCF 2008 1-0 (29)}) (6. Nc3 a6 7. dxc5 Bxc5 8. a3 Be7 9. Be2 d6 10. e4 O-O 11. O-O Nc6 12. Qd3 Rd8 13. Be3 Qc7 14. Na4 Nd7 15. c4 Nc5 16. Qc2 Bd7 17. Nc3 Bf6 {Brusila,H (2237)-Vornanen,A (2349) ICCF 2007 1/2-1/2 (32)}) 6... Nc6 7. c3 Nh5 8. Bg3 Nxg3 9. hxg3 d5 10. Nbd2 cxd4 11. exd4 Be7 12. Bd3 Bd7 13. a3 O-O 14. b4 Bf6 15. g4 Qd8 16. Qc2 {Holt,F-Cook,D ICCF 2012 0-1 (27)}) 5. Nbd2 (5. Nc3 Bb4 6. Qd2 O-O 7. O-O-O Bb7 8. g3 Ne4 9. Qe1 g5 10. Be3 g4 11. Ne5 Nxc3 12. bxc3 Ba3+ 13. Kb1 Bxh1 14. Bxh6 f5 15. e3 Nc6 16. Nd3 Rf7 {Silva, N-Pessoa,F (2536) ICCF 2012 0-1 (27)}) (5. e3 Bb7 6. Bb5 Be7 7. Ne5 O-O 8. O-O c6 9. Bd3 d6 10. Ng4 Kh8 11. Nc3 c5 12. f3 cxd4 13. exd4 Nc6 14. Qd2 Nxg4 15. fxg4 Bg5 16. Nb5 e5 {Kuriappilly Leenson,S-Soares,R ICCF 2021 0-1 (43)}) 5... Bb7 6. e3 Nh5 7. Bg3 Be7 8. Bd3 O-O 9. Qe2 d6 10. O-O-O c5 11. Kb1 a6 12. Nh4 Nxg3 13. hxg3 d5 14. c3 Nd7 15. Qg4 Nf6 {Foreman,A-Edney,D (1988) ICCF 2016 0-1 }) (4. Bxf6 gxf6 (4... Qxf6 5. e4 (5. e3 b6 (5... c5 6. Nc3 (6. Nbd2 b6 (6... cxd4 7. exd4 Nc6 8. c3 d5 9. Bd3 Bd6 10. O-O O-O 11. Re1 Re8 12. Qb3 (12. Nf1 Bd7 13. Ne3 h5 14. g3 Rac8 15. a4 g6 16. Nd2 Qd8 17. f4 h4 18. Nf3 Kg7 19. Kg2 Rh8 20. Qe2 Qc7 21. Nxh4 Bxf4 22. Nxg6 fxg6 23. Qg4 g5 {Jacquin,R (2499)-Geist, H (2576) ICCF 2007 1/2-1/2 (28)}) 12... b6 13. Bb5 Bd7 14. Rac1 Rec8 15. Bxc6 Bxc6 16. Ne5 Be8 {Kovats,J-Steinman,A (1868) ICCF 2010 0-1 (41)}) 7. c4 Nc6 8. Be2 cxd4 9. exd4 Nxd4 10. Nxd4 Qxd4 11. Nf3 Qxb2 12. O-O Bc5 13. Qd2 Qxd2 14. Nxd2 Ba6 15. Ne4 Rc8 16. Nc3 Bd4 17. Rac1 Ke7 {Hardwick,M (1491)-Verenzuela,J ICCF 2013 0-1 (35)}) (6. Be2 Nc6 (6... cxd4 7. exd4 d5 8. O-O Nc6 9. Bb5 Bd7 10. c4 dxc4 11. Nc3 Bb4 12. Bxc4 O-O 13. a3 Bxc3 14. bxc3 Rac8 15. Re1 Rfd8 16. Bd3 b6 17. Rc1 Ne7 {Just,J (2207)-Langer,R (2406) ICCF 2017 1/2-1/2}) (6... d5 7. c4 dxc4 8. Nc3 cxd4 9. Nxd4 Bb4 10. Rc1 O-O 11. Bxc4 Rd8 12. Qb3 Bxc3+ 13. Qxc3 e5 14. Ne2 Nc6 15. O-O Be6 16. Rfd1 {1/2-1/2 (16) Campbell,E (2000)-Lukas, N (2175) ICCF 2014}) 7. O-O Be7 8. c4 O-O 9. Nc3 cxd4 10. exd4 b6 11. d5 Ne5 12. Re1 Rb8 13. Nxe5 Qxe5 14. Bf3 Qc7 15. Qd3 Ba6 16. b3 Bd6 17. g3 e5 { Simeonov,L (2257)-Gavrijski,D (2046) ICCF 2014 1/2-1/2 (39)}) 6... cxd4 7. Qxd4 (7. exd4 Bb4 8. Bd3 Nc6 (8... O-O 9. O-O d5 10. Ne2 Bd6 11. Ng3 g6 12. Re1 Nc6 13. c3 Re8 14. b4 a6 15. a4 b6 16. b5 axb5 17. axb5 Rxa1 18. Qxa1 Na5 {Tvrdon, P (1886)-Englund,J (1868) ICCF 2015 1/2-1/2 (27)}) 9. Bb5 O-O 10. O-O Bxc3 11. bxc3 Na5 12. Qe2 b6 13. Ne5 Qe7 14. f4 d6 15. Nc4 Nxc4 16. Bxc4 Qf6 17. a4 Bb7 18. a5 Rfc8 {Olsen,S (2457)-Pakènas,P (2476) ICCF 2008 1/2-1/2 (40)}) 7... Qxd4 8. Nxd4 (8. exd4 Bb4 9. O-O-O O-O 10. a3 Bxc3 11. bxc3 b6 12. Kb2 Bb7 13. Nd2 Nc6 14. Nc4 Rab8 15. Nd6 Ne7 16. a4 Rfd8 17. Kb3 g6 {Curado,M (1951) -Päßler,H (2259) ICCF 2012 0-1 (57)}) 8... a6 9. a3 b5 10. Bd3 Bb7 11. O-O Nc6 12. Nxc6 dxc6 13. Be4 O-O-O 14. Rfd1 Be7 15. Rd3 f5 16. Bf3 Bf6 17. Rad1 { Spagnoli,E-Tischenko,K ICCF 2012 1-0 (31)}) (5... Nc6 6. Be2 d5 7. O-O Bb4 8. Bb5 O-O 9. c4 dxc4 10. Bxc4 e5 11. a3 Bd6 12. Nc3 exd4 13. Nxd4 Nxd4 14. exd4 Bd7 15. g3 Rae8 16. Bd5 c6 17. Bg2 {Roncea,I (1758)-Ilascu C.,I (1885) ICCF 2017 1/2-1/2 (99)}) (5... d6 6. Bd3 g6 7. Nbd2 Bg7 8. c3 Nd7 9. O-O O-O 10. e4 b6 11. Qa4 Bb7 12. Qxd7 Qd8 13. Qxd8 Raxd8 14. Rfe1 e5 15. Rad1 {1-0 (15) Allen,J (1720)-Bonilla,R ICCF 2013}) 6. Bd3 (6. Nc3 Bb4 7. Nd2 Bxc3 8. bxc3 Bb7 9. Qg4 Qg5 10. Qxg5 hxg5 11. Rd1 d6 12. e4 Nd7 13. Bd3 g4 14. Rb1 Ke7 15. c4 Rh6 16. Kf1 Rah8 17. Kg1 Rh5 {Brito,A (1845)-Kudr,R (2224) ICCF 2011 0-1 (68)}) 6... Bb7 7. Nbd2 Be7 (7... g5 8. h3 Nc6 9. c3 Be7 10. Qa4 h5 11. O-O-O g4 12. hxg4 hxg4 13. Rxh8+ Qxh8 14. Ne1 Qh4 15. f3 O-O-O 16. Bf1 Rh8 17. e4 Bg5 18. Nd3 gxf3 19. gxf3 {Bugmann,W-Salzmann,S (2292) ICCF 2007 0-1 (29)}) 8. c3 c5 9. O-O O-O 10. Qe2 d5 11. Ne5 Bd6 12. f4 Qe7 13. Rf3 Nd7 14. Rg3 Nf6 15. Rh3 Ne4 16. Rf1 Rac8 {Stuart,P-Bapple,E ICCF 2010 0-1 (30)}) (5. Nc3 d6 (5... d5 6. e4 Bb4 7. e5 Qd8 8. a3 Be7 9. Bd3 b6 10. Ne2 Bb7 11. O-O c5 12. c3 c4 13. Bc2 Nc6 14. Nf4 Qc7 15. Nd2 O-O-O 16. Qf3 Kb8 17. Rfe1 {Cerqueira Filho,R (2428) -Fenwick,C (2535) ICCF 2006 0-1 (63)}) (5... Bb4 6. Qd2 d5 7. a3 Ba5 8. b4 Bb6 9. e4 a5 10. b5 c6 11. Be2 O-O 12. O-O a4 13. Rfb1 Ba5 14. e5 Qg6 15. Ra2 Nd7 16. Qe3 f6 17. Nxa4 {Owens,J (1300)-Caliguire,J (2085) ICCF 2012 1/2-1/2 (42)}) 6. e3 Nd7 (6... g6 7. Bb5+ Nd7 8. O-O Bg7 9. Be2 O-O 10. a4 Qe7 11. Qd2 e5 12. dxe5 Nxe5 13. Nd4 c6 14. e4 Nd7 15. Rfd1 Nc5 16. f3 a5 17. Bc4 Kh7 18. Re1 { Manarin,F (1958)-Gromark,P (2304) ICCF 2011 0-1 (35)}) 7. Bd3 a6 8. O-O g6 9. a4 Bg7 10. Ne4 Qe7 11. h3 O-O 12. Ned2 b6 13. e4 e5 14. d5 f5 15. Qe2 Qf7 16. Nh4 Nf6 {Lagergren,H (1961)-Ossig,R ICCF 2009 0-1 (54)}) (5. a3 d5 (5... d6 6. e4 Nc6 7. Qd2 g5 8. h3 Bg7 9. Bb5 Bd7 10. c3 a6 11. Bxc6 Bxc6 12. Qd3 h5 13. Nbd2 O-O-O 14. O-O-O g4 15. Nh2 gxh3 16. gxh3 Bh6 17. Nhf3 {Lanca,L (1627) -Chlubna,J (1664) ICCF 2012 0-1}) 6. e3 a6 7. Nc3 c5 8. e4 cxd4 9. Qxd4 Qxd4 10. Nxd4 Nc6 11. Nxc6 bxc6 12. exd5 cxd5 13. Rd1 Rb8 14. Rb1 d4 15. Ne4 Bxa3 16. Bd3 Rxb2 {Hardwick,M (1236)-Winter,M (1961) ICCF 2019 0-1 (39)}) (5. c3 d6 6. c4 Nc6 7. e3 e5 8. Nc3 exd4 9. Nxd4 Qd8 10. Bd3 Bd7 11. Nxc6 bxc6 12. O-O Be7 13. Qc2 Rb8 14. Rab1 Bf6 {0-1 (14) Lines,D-Dziedzic,A (2042) ICCF 2013}) 5... d6 (5... Nc6 6. Nc3 (6. c3 d5 (6... Qg6 7. Nbd2 Be7 8. Bd3 d6 9. Nc4 O-O 10. Ne3 e5 11. O-O a6 12. Re1 Bf6 13. Bc2 Re8 14. Ba4 exd4 15. Nxd4 Bd7 16. Bc2 Bxd4 17. cxd4 Nb4 18. Bb1 {Höppenstein,M (2282)-Lukasiewicz,P (1909) ICCF 2014 1-0 (37)}) 7. Nbd2 Bd7 8. Bd3 O-O-O 9. e5 Qe7 10. b4 g5 11. g3 g4 12. Nh4 h5 13. Nb3 Bh6 14. O-O Nb8 15. Nc5 Bg5 16. Ng2 f6 17. f4 gxf3 {Koc,Z (2235) -Glaser,K (2256) ICCF 2010 1/2-1/2 (26)}) (6. e5 Qf4 (6... Qe7 7. Nc3 d5 (7... d6 8. Bb5 d5 9. Qd2 Bd7 10. O-O-O a6 11. Bxc6 Bxc6 12. h4 O-O-O 13. Ne1 Qb4 14. Qf4 Be8 15. Nd3 Qc4 16. Kb1 Be7 17. Ne2 Qb5 {Neborak,Y (2289)-Parsons,L ICCF 2009 1/2-1/2 (55)}) 8. Na4 f6 9. Bd3 fxe5 10. Bg6+ Kd8 11. dxe5 Qb4+ 12. Nc3 Qxb2 13. Nxd5 Nxe5 14. Nb6+ Bd6 15. Nxa8 Qb4+ 16. Nd2 Nxg6 17. O-O b6 18. c3 { Vasile,C (2234)-Ciesielski,S (2218) ICCF 2008 0-1}) 7. Qd2 Qxd2+ 8. Nbxd2 Nb4 9. Kd1 Be7 10. a3 Nc6 11. Bd3 d5 12. b4 Bd7 13. c4 a6 14. cxd5 exd5 15. h3 a5 16. b5 Na7 17. a4 c6 {Chevrier,J-Sandel,F ICCF 2007 1/2-1/2 (102)}) 6... Bb4 ( 6... a6 7. e5 (7. a3 g5 8. e5 Qg7 9. Ne4 Be7 10. c3 d6 11. exd6 cxd6 12. Nfd2 d5 13. Ng3 g4 14. Bd3 h5 15. Qc2 Bd7 16. Ngf1 Rc8 17. Qb3 e5 18. Qxd5 Be6 { De Vito,G-Sabbatini,G (1894) ICCF 2013 0-1 (38)}) 7... Qg6 8. h3 (8. Qd2 d5 9. O-O-O Be7 10. h4 Bd7 11. h5 Qh7 12. Bd3 Qg8 13. Kb1 O-O-O 14. a3 Kb8 15. Ne2 Qf8 16. Rh3 Na7 17. Qf4 c5 18. dxc5 {Allerberger,P (2165)-Galvin,J (2048) ICCF 2013 1-0 (48)}) 8... Nb4 9. Rc1 c5 10. d5 b5 (10... Be7 11. dxe6 Qxe6 12. a3 Nc6 13. Nd5 Bd8 14. Bc4 Qg6 15. Bd3 Qe6 16. Nf4 Qe7 17. O-O O-O 18. Re1 Kh8 19. c3 Re8 20. Bb1 Qf8 21. Qd5 Be7 22. Nd2 {Laine,J (2118)-Popov,V (2213) ICCF 2013 1-0 (37)}) 11. dxe6 Qxe6 12. a3 Nc6 13. Bd3 d5 14. O-O Be7 15. Re1 Bb7 16. Ne2 Bg5 17. Nxg5 hxg5 18. Ng3 {Markoja,J (1777)-Reinstadler,B ICCF 2010 1/2-1/ 2 (41)}) 7. e5 (7. Bb5 O-O (7... a6 8. e5 Qe7 9. Bxc6 Bxc3+ 10. bxc3 dxc6 11. Nd2 c5 12. Qg4 Bd7 13. O-O O-O-O 14. Nb3 cxd4 15. cxd4 Bb5 16. Rfe1 Qg5 17. Qxg5 hxg5 {Palladino,M (2099)-Fels,B (2145) ICCF 2011 1/2-1/2}) 8. O-O d6 9. Ne2 Ba5 10. c4 Bb6 11. e5 Qe7 12. a3 Bd7 13. Ba4 Rad8 14. Qc2 a6 15. b4 Qe8 16. c5 Nxd4 17. Bxd7 Nxc2 18. Bxe8 Nxa1 {Dreisch,J (1996)-Veretennikov,V ICCF 2017 1/2-1/2 (60)}) 7... Qf4 8. Qd3 d6 9. a3 Bxc3+ 10. Qxc3 Bd7 11. Be2 dxe5 12. dxe5 g5 13. g3 Qe4 14. h3 Ne7 15. Rd1 O-O-O 16. Rd4 Qc6 17. Rc4 {Hoch,D (2175) -Cijs,P (2376) ICCF 2007 1/2-1/2 (74)}) (5... d5 6. Nbd2 (6. e5 Qd8 7. Bd3 c5 8. c3 Qb6 9. Qc2 (9. Qb3 Qc7 10. Qc2 Bd7 11. Nbd2 Nc6 12. O-O Be7 13. Ne1 cxd4 14. cxd4 Rc8 15. Qa4 Nxe5 16. Bb5 Nc6 17. Nd3 a6 {Shtrikman,R (1724)-Gosling,B (1927) ICCF 2019 0-1 (41)}) 9... cxd4 10. cxd4 Nc6 11. O-O Bd7 12. Nc3 Nb4 13. Qd2 Nxd3 14. Qxd3 Rc8 15. Rab1 Be7 16. a3 O-O 17. h3 a5 {Che,T (1580)-Clancey, J (1875) ICCF 2016 0-1 (31)}) 6... dxe4 (6... Qd8 7. Bd3 Be7 8. O-O O-O 9. c4 dxe4 10. Nxe4 Nd7 11. Bc2 Nf6 12. Qd3 Nxe4 13. Qxe4 f5 14. Qe3 b6 15. Rfe1 Bd7 16. Ne5 Be8 17. Rad1 Bh5 18. f3 {Grinsteinner,R (1552)-Stone,D (1699) ICCF 2016 1-0 (56)}) (6... g6 7. Bd3 Bg7 8. c3 O-O 9. e5 (9. O-O Nd7 10. Re1 dxe4 11. Nxe4 Qe7 12. Qe2 c5 13. h4 Rd8 14. h5 g5 15. Rad1 cxd4 16. Nxd4 Ne5 17. Bb1 Bd7 18. Ng3 {Neborak,Y (2323)-Binas,J (2301) ICCF 2017 1/2-1/2 (48)}) 9... Qe7 10. O-O c5 11. Re1 a5 12. Qe2 a4 13. Qe3 cxd4 14. Nxd4 Nc6 15. N2f3 Bd7 16. Rac1 f5 17. exf6 Qxf6 18. Nxc6 {Gmür,A (2485)-Václav,J (2489) ICCF 2005 0-1 (59)}) (6... c5 7. Bb5+ Nc6 8. c4 Bd7 9. O-O Nxd4 10. Bxd7+ Kxd7 11. e5 Nxf3+ 12. Nxf3 Qd8 13. cxd5 Qa5 14. dxe6+ Kxe6 15. Qb3+ {1-0 (15) Monakhov,A (2014) -Sheward,A ICCF 2014}) (6... Bd7 7. Bd3 c5 8. O-O (8. exd5 exd5 9. c4 dxc4 10. Nxc4 cxd4 11. O-O Nc6 12. Nce5 O-O-O 13. Rc1 Bd6 14. Nxd7 Rxd7 15. Bb5 Kb8 16. Bxc6 bxc6 17. Qa4 d3 18. Rfd1 Rhd8 19. Qxc6 {1/2-1/2 (19) Sesko,M (2231) -Goebel,K (2215) ICCF 2010}) (8. e5 Qd8 9. dxc5 Bxc5 10. c4 dxc4 11. Bxc4 Bc6 12. O-O O-O 13. Qe2 Qb6 14. b3 Rd8 15. Rfd1 Nd7 16. Bd3 Rac8 17. Rac1 Be7 18. Nc4 Qc7 19. Nd4 Bd5 {Vasseur,O (2129)-Roblette,Y (1909) ICCF 2017 0-1 (42)}) 8... cxd4 9. Re1 dxe4 10. Nxe4 Qd8 11. Nxd4 Be7 12. Qg4 O-O 13. Ng3 Nc6 14. Nh5 Bg5 15. Nxc6 Bxc6 16. Rad1 Qe7 17. Qd4 {Szaro,M-Manarin,F (1915) ICCF 2015 1/ 2-1/2 (34)}) 7. Nxe4 Qf5 8. Bd3 Be7 9. Nd6+ Bxd6 10. Bxf5 exf5 11. Qe2+ Be6 12. d5 Nc6 13. O-O-O O-O 14. dxe6 fxe6 15. Qxe6+ Kh7 16. Rhe1 Bb4 17. Rd7 { Hendricks,R-Drescher,A ICCF 2017 1-0 (25)}) (5... b6 6. e5 Qg6 7. Qd3 f5 8. Nbd2 Be7 9. O-O-O Nc6 10. h4 Bb7 11. a3 O-O-O 12. Qc3 Qg4 13. Rh2 Nb8 14. g3 Qh5 15. Be2 Qf7 16. h5 Rdg8 17. Bc4 {Harrington,T (1522)-Burrus,M (1596) ICCF 2013 1-0 (35)}) (5... Bb4+ 6. c3 Ba5 7. a4 (7. Nbd2 O-O 8. Bd3 d6 9. O-O c6 10. Re1 Nd7 11. e5 dxe5 12. Nxe5 Nxe5 13. Rxe5 Bc7 14. Re3 Re8 15. Rf3 Qh4 16. h3 e5 17. Ne4 {Graupera,C (1526)-O'Neill,C (1517) ICCF 2016 1-0 (48)}) (7. e5 Qe7 8. Nbd2 O-O 9. Bd3 Nc6 10. b4 Bb6 11. Nc4 d5 12. exd6 cxd6 13. Nxb6 axb6 14. b5 Na5 15. O-O Bd7 16. Qe2 Rfc8 17. Rac1 Rc7 18. Qe4 f5 {Tafner,E (1663)-Hofer,S ICCF 2013 1-0 (41)}) 7... c6 8. e5 Qe7 9. b4 Bc7 10. a5 b5 11. axb6 Bxb6 12. Bd3 Ba6 13. Bxa6 {1-0 (13) Poelvoorde,H-Davis,J (1300) ICCF 2020}) (5... g6 6. Nc3 (6. c3 Bg7 7. Nbd2 O-O 8. Bd3 d6 9. Nc4 Qe7 10. O-O b6 11. Re1 Bb7 12. a4 a5 13. Qe2 e5 14. dxe5 dxe5 15. Ne3 Nd7 16. Nd5 Qd8 17. Red1 c6 {Ybarra,M (2136)-Beltins,G (2144) ICCF 2019 1/2-1/2}) 6... Bg7 7. Bd3 Nc6 8. Nb5 Qd8 9. c3 O-O 10. O-O d6 11. Na3 e5 12. d5 Nb8 13. Nc4 Nd7 14. Qc2 Nf6 15. Ne3 c6 16. c4 Ng4 {1/2-1/2 (16) Pino Muñoz,F (2262)-Klausen,T (2464) ICCF 2012}) 6. Nc3 ( 6. Nbd2 Nd7 7. c3 g6 (7... g5 8. g3 Be7 9. Nc4 h5 10. h4 g4 11. Ng1 d5 12. exd5 exd5 13. Ne3 Nb6 14. a4 Bd7 15. Ne2 c6 16. b3 Bf8 17. Bg2 Bh6 18. O-O O-O 19. a5 {Just,J (2201)-Tödter,H (2182) ICCF 2020 1-0 (47)}) 8. Bd3 (8. Bc4 Bg7 9. O-O O-O 10. Re1 e5 11. dxe5 dxe5 12. Qc2 Nb6 13. Be2 Rd8 14. a4 a5 15. Nc4 Nxc4 16. Bxc4 Bg4 17. Re3 Rd6 18. h3 Be6 19. Bxe6 Qxe6 {Greiner,T (2320)-Mason,I (2237) ICCF 2007 1/2-1/2}) (8. a4 Bg7 9. a5 O-O 10. Bc4 Qe7 11. O-O a6 12. Re1 e5 13. Nf1 Nf6 14. h3 Bd7 15. Ne3 c6 16. dxe5 dxe5 17. Qc2 Rad8 18. Rad1 Nh5 19. Rd2 Bc8 {Helman,B (2099)-Sciarretta,R (2125) ICCF 2013 1/2-1/2 (43)}) (8. Nc4 Bg7 9. Ne3 O-O 10. Bd3 e5 11. O-O exd4 12. Nxd4 Nc5 13. f4 Bd7 14. Nb3 Nxd3 15. Nd5 Qd8 16. Qxd3 c6 17. Ne3 Re8 18. Rf3 Qe7 {Tyulenko,Y (2445)-Dessaules,P (2328) ICCF 2014 1/2-1/2 (43)}) 8... Bg7 9. a4 (9. Qc2 O-O 10. h4 e5 11. dxe5 dxe5 12. Nc4 Nc5 13. Nfxe5 b5 14. Ne3 Qxe5 15. Bxb5 Bb7 16. f3 Nxe4 17. fxe4 Qxb5 18. Rd1 Rae8 {0-1 (18) Rowley,M (1728)-Pérez López,A (2127) ICCF 2015}) (9. Qe2 e5 10. O-O (10. d5 O-O 11. O-O Nc5 12. Bc2 a5 13. b4 axb4 14. cxb4 Na4 15. Bxa4 Rxa4 16. Qc4 Qd8 17. Rfc1 f5 18. Qxc7 Rxb4 19. a3 Ra4 20. Qxd8 Rxd8 { Geluk,P (2095)-Limbert,N (2065) ICCF 2009 0-1 (39)}) 10... O-O 11. Nc4 exd4 12. cxd4 Nb6 13. h3 Re8 14. Rac1 Nd5 {0-1 (14) Zarubin,D-Ylönen,A (2051) ICCF 2008 }) (9. O-O O-O 10. Re1 (10. h3 Qe7 11. Re1 e5 12. Nc4 Nb6 (12... b6 13. Ne3 Bb7 14. d5 f5 15. Bc2 f4 16. Nf1 g5 17. a4 h5 18. a5 Bh6 19. N3h2 Nf6 20. Bd3 Bc8 21. axb6 cxb6 22. Be2 Qf7 23. Ba6 Bd7 24. Bb7 {Packroff,H (2251)-Hansen,L (2213) ICCF 2017 0-1 (44)}) 13. a4 Be6 14. Ne3 a5 15. d5 Bd7 16. Qc2 c6 17. Qb3 Qd8 18. Nc4 Nxc4 19. Bxc4 Rb8 20. dxc6 bxc6 21. Qa3 c5 {Lagergren,H (1899) -Castilla,L (1808) ICCF 2020 1/2-1/2 (49)}) 10... e5 (10... Qe7 11. a4 e5 12. Bc4 (12. Nc4 exd4 13. cxd4 c5 14. e5 dxe5 15. dxe5 Nb6 16. Nxb6 axb6 17. Qb3 Rd8 18. Ra3 Qc7 19. Bb5 Be6 20. Qc2 Bf5 21. Qc4 {1/2-1/2 (21) Zakharov,V (2512) -Nogga,U (2472) ICCF 2015}) 12... c6 13. a5 Nf6 14. Bf1 Qc7 15. b4 Rd8 16. Qc2 Be6 17. dxe5 {1/2-1/2 (17) Ramos,E (2262)-Reitner,A (2270) ICCF 2016}) (10... Qd8 11. a4 a5 12. Qc2 b6 13. Rad1 Bb7 14. Nc4 Nf6 15. Ne3 Qd7 16. Nd2 Rad8 17. Be2 h5 {Sanchez,J (2111)-Zhorov,B (2269) ICCF 2019 1/2-1/2 (52)}) 11. Nc4 (11. Qc2 Re8 12. Rad1 Nb6 13. a4 a5 14. Nc4 Nd7 15. b3 Nf8 16. Ne3 c6 17. d5 Nd7 18. b4 Qe7 19. Nd2 Nf6 20. Ndc4 cxd5 21. Nb6 d4 22. Nxa8 {Lagergren,H (1775)-Gross, M ICCF 2020 1-0 (33)}) 11... Rd8 (11... Re8 12. dxe5 (12. Qc2 h5 13. Rad1 Nf8 14. Ne3 exd4 15. cxd4 c6 16. h4 Qe7 17. Bc4 Nh7 18. e5 d5 19. Be2 Bh6 20. Qc1 Kg7 21. Qc3 Nf8 22. g3 Ne6 {Cooper,N (2185)-Chipkin,L (2181) ICCF 2020 1/2-1/2 (47)}) 12... dxe5 13. b4 Nb6 14. Na5 Qe7 15. Qc2 c5 16. a3 Qc7 17. c4 Be6 18. b5 Red8 19. a4 Rd7 20. Red1 Rad8 21. Be2 Nc8 22. Nb3 Rxd1+ 23. Rxd1 {Welti,M (2073)-Haller,P (2041) ICCF 2010 1/2-1/2 (27)}) 12. Ne3 (12. h3 Qe7 13. Qb3 Nf8 14. Rad1 Ne6 15. Bf1 exd4 16. cxd4 a6 17. g3 a5 18. h4 a4 19. Qc2 h5 20. Ne3 Qf8 21. Nd5 Bd7 22. Rd2 Rac8 23. Qd1 Rb8 {Ludgate,A (2482)-Verde,P (2482) ICCF 2018 1/2-1/2 (46)}) 12... Nb6 13. Qb3 c6 14. a4 exd4 15. cxd4 c5 16. e5 dxe5 17. dxe5 Be6 18. Qc2 Qe7 19. a5 Nd5 20. Bc4 Nxe3 {Welti,M (1931)-Vieito Ribelles,A (1944) ICCF 2008 1/2-1/2 (53)}) (9. Nc4 b6 (9... e5 10. Qc2 O-O 11. O-O exd4 12. cxd4 c6 13. a4 Nb6 14. Ne3 a5 15. Rab1 Be6 16. h4 c5 17. e5 Qf4 18. Qe2 c4 19. Bc2 Bg4 20. Nxg4 Qxg4 {Zhdanenia,K (2293)-Mason,I (2236) ICCF 2015 1/2-1/2 (58)}) 10. Qe2 Bb7 11. O-O O-O 12. Rad1 Rad8 13. Rfe1 Qe7 14. h3 c5 15. Na3 Nf6 16. Qe3 a6 17. Nb1 b5 18. Nbd2 cxd4 19. Nxd4 Rc8 20. N2b3 Qc7 { Mogstad,O (1976)-Atuán,J (2102) ICCF 2009 1/2-1/2 (61)}) 9... a5 10. Qe2 (10. O-O O-O 11. Re1 e5 12. h3 Re8 13. Rc1 Qe7 14. Qb3 Nf6 15. Rcd1 Nh5 16. Bb5 Rd8 17. Bf1 b6 18. g3 Bd7 19. Qc2 Bc6 20. Nc4 Rab8 21. d5 Bd7 {Cattani,M (2458) -Blecha,M (2379) ICCF 2010 1/2-1/2 (25)}) 10... O-O 11. O-O e5 12. Nc4 exd4 13. cxd4 Nb8 14. e5 Qd8 15. exd6 cxd6 16. Qd2 Nc6 17. Qf4 Nb4 {Lanin,D-Zebre,P (2331) ICCF 2005 0-1 (28)}) (6. e5 dxe5 7. dxe5 Qf4 (7... Qe7 8. Nc3 Bd7 9. Qd2 Nc6 10. O-O-O O-O-O 11. Bb5 g5 12. Ne4 Bg7 13. Qe3 Qb4 14. Nc3 a6 15. a3 Qa5 16. Bxc6 Bxc6 17. Rxd8+ Rxd8 18. Re1 Bf8 19. Rd1 {Bristol,M (2176)-Cote,J (2636) ICCF 2006 0-1 (31)}) 8. Nbd2 Nd7 9. Qe2 (9. g3 Qb4 10. Rb1 Qa5 11. a3 Nxe5 12. b4 Nxf3+ 13. Qxf3 Qd5 14. Bg2 Qxf3 15. Bxf3 g6 16. Ne4 a5 17. c4 axb4 18. axb4 Ra3 19. Bg2 f5 20. Nd2 Bg7 {Robertson,J-Cairney,J (2035) ICCF 2010 0-1 (42)}) 9... Qa4 10. Nc4 Be7 11. Qd2 O-O 12. b3 Qc6 13. Bd3 Nc5 14. Ne3 Nxd3+ 15. cxd3 b6 16. O-O Bb7 17. Rac1 Qd7 {Bristol,M (2176)-Sladek,V (2080) ICCF 2007 0-1 (28)}) (6. c3 Nc6 (6... Nd7 7. Bd3 (7. a4 g6 8. a5 (8. Nbd2 Bg7 9. Bc4 O-O 10. O-O a5 11. Qc2 Nb6 12. e5 Qe7 13. Bd3 dxe5 14. dxe5 Bd7 15. Be4 Rab8 16. b3 Rfd8 17. Rfe1 Be8 18. Rab1 c6 19. Re3 Qc7 {Zdziech,M-Simons,K ICCF 2019 1/2-1/2}) 8... Bg7 9. Bc4 e5 10. b4 O-O 11. O-O Qe7 12. Re1 Nf6 13. a6 bxa6 14. d5 Rb8 15. Bxa6 c6 16. dxc6 Rb6 17. Qd3 Rxc6 18. Bc4 Rd8 {Zordick,M (2187)-Shabaev,V (2125) ICCF 2017 1-0 (54)}) 7... Be7 (7... g5 8. Na3 (8. O-O g4 9. Nfd2 h5 10. f4 Qg7 11. Na3 a6 12. e5 d5 13. c4 Nb6 14. c5 Nd7 15. b4 Be7 16. Nb3 f5 17. c6 bxc6 18. Qc1 Nb8 19. Qc3 {Carradori,D (2126)-Cavalcanti,B ICCF 2014 1/2-1/2 (69)}) 8... g4 9. Nd2 h5 10. Qe2 a6 11. Nc2 Nb6 12. a4 a5 13. O-O Bd7 14. Bb5 c6 15. Bd3 e5 16. f3 Qg5 17. dxe5 dxe5 18. Qf2 Nc8 19. fxg4 { Popov,A (2461)-Kopeikin,V (2399) ICCF 2008 1/2-1/2 (42)}) (7... e5 8. Na3 Be7 9. O-O Nb6 10. Re1 O-O 11. Nc2 Bg4 12. Be2 Be6 13. Ne3 c6 14. Qc2 a5 15. a4 Rfe8 16. Rad1 g6 17. h4 exd4 18. cxd4 Bf8 19. h5 {Carradori,D-Viviani,E ICCF 2013 1-0 (45)}) 8. Nbd2 O-O 9. O-O e5 10. Nc4 Bd8 (10... Re8 11. Qe2 c6 12. Rac1 Bf8 13. Ne3 Nb6 14. Bc2 Be6 15. Qd3 Qf4 16. d5 Bxd5 17. exd5 e4 18. Qd1 exf3 19. g3 {Barbosa,L (2103)-Caglia,G ICCF 2006 1-0 (30)}) 11. a4 c6 12. Re1 a5 13. Qb3 Bc7 14. Rad1 Re8 15. h3 Nf8 16. Re3 Rb8 17. Nb6 exd4 18. cxd4 { Kmiecik,K (2204)-Oliveira,M (2565) ICCF 2010 1/2-1/2 (45)}) (6... a6 7. Bd3 Nc6 8. Nbd2 e5 9. d5 Nb8 10. O-O Nd7 11. Qe2 g6 12. Nc4 Bg7 13. a4 O-O 14. Ne3 Nc5 15. Bc2 a5 16. b4 Na6 17. Rfb1 Qe7 18. h3 {Toledo,R (2116)-Pisani,C (2048) ICCF 2011 0-1 (74)}) (6... g6 7. Nbd2 (7. g3 Bd7 8. Bg2 Nc6 9. a4 Bg7 10. Nbd2 e5 11. d5 Ne7 12. h4 g5 13. Qb3 O-O-O 14. h5 g4 15. Nh4 Kb8 16. Bf1 Qg5 17. a5 Ka8 18. Bb5 Bc8 {Zhdanenia,K (2305)-Dailido,S (2324) ICCF 2018 1-0 (63)}) 7... Bg7 8. Bd3 (8. h4 Nc6 9. Qc2 e5 10. d5 Ne7 11. Nc4 h5 12. Ne3 Bd7 13. Be2 Bh6 14. c4 O-O 15. O-O Qg7 16. c5 f5 17. Ng5 Bxg5 18. hxg5 fxe4 19. cxd6 cxd6 { Owens,J (2113)-Hansen,L (2239) ICCF 2016 1/2-1/2 (33)}) 8... e5 9. O-O O-O 10. Rc1 (10. Qb3 a5 11. a4 Na6 12. Bxa6 Rxa6 13. Rfe1 Qe6 14. Qc2 b6 15. b4 Ra8 16. b5 Bb7 17. Re3 Rab8 18. Rae1 Qd7 19. Qd3 Rbd8 20. h3 f5 21. d5 f4 {Dunks,P (1995)-Truelove,C (2196) ICCF 2020 1/2-1/2 (51)}) 10... exd4 (10... Qe7 11. Qe2 Nd7 12. Nc4 c6 13. h3 Rd8 14. Rfd1 Nf8 15. dxe5 dxe5 16. Bc2 Be6 17. Ncxe5 Bxa2 18. Nc4 Rxd1+ 19. Rxd1 a5 20. Nb6 Re8 21. Qd2 {1/2-1/2 (21) Lagergren,H (1916) -Schleef,H (1966) ICCF 2020}) 11. cxd4 Nc6 12. d5 Nb4 13. Bc4 c6 14. a3 cxd5 15. exd5 Na6 16. Bxa6 bxa6 17. b4 Re8 18. Re1 {Langer,R (2170)-Packroff,H (2244) ICCF 2014 1/2-1/2 (31)}) 7. Nbd2 (7. Bd3 Be7 (7... Bd7 8. Na3 O-O-O 9. O-O g5 10. b4 g4 11. Nd2 h5 12. Nc2 Qg6 13. b5 Ne7 14. f4 Bh6 15. a4 Nd5 16. f5 Qg5 17. exd5 Qxd2 18. dxe6 fxe6 {Lelgemann,L (2098)-Gebhardt,U (2105) ICCF 2018 1/2-1/2 (30)}) (7... g6 8. Nbd2 Bg7 9. Qe2 Bd7 10. O-O-O O-O 11. h3 a5 12. Ne1 a4 13. Nc2 e5 14. d5 Ne7 15. Qf3 Qxf3 16. gxf3 g5 17. Ne3 Ng6 18. Nf5 a3 19. b3 {Zambrano Müller,J-Hernández,J ICCF 2007 0-1 (41)}) 8. O-O e5 9. Na3 O-O 10. Nc2 exd4 11. Nfxd4 Nxd4 12. Nxd4 Qf4 13. Bc2 Bd7 14. Qd3 g6 15. g3 Qf6 16. f4 Qg7 17. Rf2 c6 18. f5 Bf6 {Velilla Velasco,F (2547)-Makowski,T (2488) ICCF 2008 1-0 (48)}) (7. Na3 Bd7 8. Bb5 d5 9. Qe2 Bxa3 10. bxa3 O-O 11. O-O Qf4 12. Bd3 Qd6 13. a4 Ne7 14. Bc2 c5 15. Rab1 b6 16. e5 Qc7 17. Rfc1 Rfc8 18. Qd3 Ng6 {Owens,J (2113)-Broadway,D (2271) ICCF 2016 1/2-1/2 (40)}) 7... Bd7 (7... e5 8. d5 Nb8 9. Qc2 Be7 10. h3 Bd7 11. Qb3 b6 12. Bb5 O-O 13. Bxd7 Nxd7 14. O-O Rfc8 15. Qb5 Nb8 16. Rad1 a6 17. Qe2 Nd7 18. Nc4 b5 19. Na5 {Wittenstein, S-Braider,C ICCF 2015 1-0 (43)}) (7... Be7 8. h3 (8. g3 Bd7 9. Nc4 O-O 10. a4 e5 11. d5 Nb8 12. Ne3 Qg6 13. Qc2 a5 14. h4 Na6 15. h5 Qf6 16. Nh4 Rfc8 17. Bh3 Bxh3 18. Rxh3 Nc5 19. Kf1 Bf8 {Morozov,N (2057)-Portych,V (2184) ICCF 2013 1/ 2-1/2 (31)}) 8... O-O 9. Bd3 e5 10. d5 Nb8 11. Qe2 Nd7 12. Nb3 a5 13. a4 c6 14. c4 Re8 15. Qd2 Bd8 16. Rc1 Bb6 17. O-O Nc5 18. Nxc5 Bxc5 19. Kh1 {Anderson,J (1583)-Martinez Galiano,M (2039) ICCF 2007 0-1 (31)}) (7... g5 8. d5 Nb8 9. Nd4 exd5 10. exd5 Nd7 11. Bd3 Qe5+ 12. Be4 Nf6 13. N4f3 Qf4 14. g3 Qg4 15. Qe2 Be7 16. O-O-O Nxe4 17. Nxe4 O-O 18. h3 Qf5 19. g4 {Friesenhahn,H (2325)-Kastner,W (2274) ICCF 2006 1-0 (40)}) 8. Bd3 (8. b4 g5 9. Nc4 g4 10. Nfd2 e5 11. d5 Ne7 12. Na5 h5 13. Nxb7 h4 14. g3 Qg6 15. Bc4 hxg3 16. fxg3 Bh6 17. Qe2 f5 18. Bd3 O-O 19. Na5 f4 {Schiendorfer,R (2395)-Hervet,G (2370) ICCF 2015 1/2-1/2 (25)}) 8... O-O-O (8... g5 9. Nc4 g4 (9... O-O-O 10. Ne3 (10. O-O g4 11. Nfd2 h5 12. b4 e5 13. d5 Ne7 14. a4 h4 15. a5 Qg6 16. a6 b6 {0-1 (16) Sladek,V (1799) -Douziech,R (2292) ICCF 2011}) 10... Kb8 11. Qe2 Ne7 12. e5 Qg7 13. exd6 cxd6 14. O-O-O Nc6 15. h4 g4 16. Nd2 h5 17. Kb1 d5 18. Nb3 Bd6 19. g3 b6 20. Qd2 Qf6 21. Rdf1 {Lanin,B (2094)-Markovich,M (2384) ICCF 2010 1/2-1/2 (30)}) 10. Nfd2 h5 11. Qe2 O-O-O 12. O-O-O b5 13. Ne3 a6 14. a4 Nxd4 15. cxd4 Qxd4 16. axb5 axb5 17. Bxb5 Qc5+ 18. Bc4 Ba4 19. b3 Bc6 20. Nc2 {Jarabinský,M (2246)-Fels,B (2213) ICCF 2014 1-0 (44)}) 9. h3 Kb8 10. Qe2 g5 11. O-O-O e5 12. d5 Ne7 13. Kb1 Ng6 14. g3 h5 15. Rdf1 h4 16. Ne1 Qe7 17. Bb5 Bc8 {Jarabinský,M (2246) -Vachtfeidl,P (2299) ICCF 2014 0-1}) (6. Bd3 e5 (6... Bd7 7. Nc3 (7. Qe2 Nc6 8. c3 g5 9. a4 h5 10. O-O g4 11. Ne1 e5 12. d5 Ne7 13. Ra3 h4 14. Rb3 Bc8 15. a5 a6 16. Nc2 Ng6 17. g3 Bh6 18. Ne3 hxg3 {Lagergren,H (1916)-Blair,D (2057) ICCF 2020 0-1 (34)}) 7... Nc6 8. Nb5 (8. d5 Ne5 9. Nxe5 dxe5 10. O-O O-O-O 11. Qe2 exd5 12. Nxd5 Qg5 13. f4 exf4 14. Nxf4 Bd6 15. Nd5 Be6 16. c4 c6 17. Nc3 Qe5 18. g3 h5 19. Qf3 Bg4 {Gillard,J-Thys,H (1795) ICCF 2013 0-1}) 8... Qd8 9. c3 a6 10. Na3 Be7 11. O-O O-O 12. e5 dxe5 13. dxe5 b5 14. Nc2 Bc5 15. Be4 Rb8 16. Ncd4 Nxd4 17. cxd4 Bb6 {White,R (1640)-Sommeling,G (1707) ICCF 2020 1-0}) 7. c3 (7. dxe5 dxe5 8. h3 Nc6 9. O-O Bd7 10. Nc3 O-O-O 11. Qe2 Qg6 12. Kh2 Be7 13. Nd5 Bd6 14. Kh1 Nd4 15. Nxd4 exd4 16. e5 Qe6 17. exd6 Qxd5 18. Be4 Qxd6 { Stuart,P-Anderson,J ICCF 2009 0-1 (38)}) (7. Na3 Be7 8. dxe5 dxe5 9. Nc4 Nc6 10. Ne3 Nd4 11. Nxd4 exd4 12. Nd5 Qd6 13. Bc4 c6 14. Nxe7 Qb4+ 15. c3 dxc3 16. Nxc6 bxc6 17. b3 Be6 18. Bxe6 {Jarabinský,M (2092)-Mut Company,G (2229) ICCF 2011 1/2-1/2 (31)}) 7... Be7 8. O-O O-O 9. Nbd2 Nc6 10. d5 Nb8 11. Nc4 Nd7 12. Ne3 a5 13. Re1 g6 14. a4 Qg7 15. b4 Nb6 16. Qc2 Qh7 17. Nd2 f5 {Morales Viscaya,J-de los Santos Coello,J ICCF 2019 1/2-1/2 (32)}) (6. c4 g5 7. Na3 a6 8. Bd3 g4 9. e5 Qg7 10. Nd2 dxe5 11. Nc2 exd4 12. Qe2 Nc6 13. a3 Bd7 14. g3 O-O-O 15. O-O-O f5 16. f3 gxf3 17. Qxf3 Be7 {Ridout,P (1360)-Pirhot,T ICCF 2019 0-1 (28)}) (6. Qd2 g5 (6... Nc6 7. Nc3 g5 8. d5 g4 9. dxc6 gxf3 10. Bb5 Ke7 11. gxf3 a6 12. Be2 h5 13. cxb7 Bxb7 14. Nd1 Bh6 15. Qb4 Rab8 16. Qa5 Rhc8 17. Qa3 Rg8 {Middendorf,R-Wemhöner,W (2092) ICCF 2007 0-1 (36)}) 7. h3 Nc6 8. Nc3 Bd7 9. O-O-O O-O-O 10. Kb1 a6 11. Be2 Kb8 12. Rhe1 Bg7 13. Bf1 Bc8 14. Qe3 Qg6 15. e5 f5 16. exf6 Qxf6 17. Ne4 Qf5 {Lanin,B (2094)-Sychov,A (2279) ICCF 2012 0-1 (58)}) 6... Nd7 (6... g6 7. Qd2 (7. a4 a6 8. Bd3 Bg7 9. O-O O-O 10. a5 Nc6 11. Ne2 Nb4 12. Bc4 d5 13. e5 Qe7 14. Bd3 Bd7 15. c3 Nxd3 16. Qxd3 Bb5 17. Qe3 Bxe2 18. Qxe2 c5 {Carrera O.,A (2222)-González Lamigueiro,J (2236) ICCF 2019 1/2-1/2 (40)}) (7. Qd3 Bg7 8. O-O-O O-O 9. Kb1 Qe7 10. g4 Nd7 11. Rg1 Rb8 12. g5 h5 13. Nh4 c5 14. Ne2 cxd4 15. Nxd4 d5 16. exd5 exd5 17. Qe2 Qd8 18. f3 Nc5 {Bruce,R (1991)-Tepe Gastulo,R (1980) ICCF 2018 0-1 (51)}) (7. e5 Qe7 8. Qe2 Bg7 9. Qe3 O-O 10. Bd3 Nc6 11. a3 a6 12. O-O b5 13. Ne2 Bb7 14. Be4 Rab8 15. Rfe1 Na5 16. Bxb7 Nxb7 17. b4 Rfd8 18. Ng3 c5 {Owens,J (1355)-Higgins,B (1666) ICCF 2014 1-0 (55)}) (7. Bb5+ Bd7 8. O-O a6 9. Bxd7+ Nxd7 10. Qd3 Bg7 11. Ne2 e5 12. c3 O-O 13. d5 Qe7 14. c4 Nc5 15. Qc2 a5 16. Nc3 f5 17. h3 Qd7 18. Nd2 f4 {Palladino,M (2099)-Lecha González,J (2113) ICCF 2011 0-1 (71)}) ( 7. Bd3 Nc6 (7... Bg7 8. O-O O-O 9. e5 Qe7 10. Re1 dxe5 11. dxe5 Bd7 12. Qd2 Bc6 13. Be4 Bxe4 14. Nxe4 Nc6 15. Qf4 Rad8 16. h4 Rd5 17. Nf6+ Bxf6 18. exf6 Qd8 19. c3 {Owens,J (2122)-Valderas Viejo,J (2195) ICCF 2016 1/2-1/2 (37)}) 8. O-O Bg7 9. Ne2 O-O 10. Re1 h5 11. a3 e5 12. d5 Ne7 13. c4 g5 14. Nd2 g4 15. Nc3 Bd7 16. b4 Ng6 17. c5 Nf4 18. Bf1 Qg6 {Siigur,J (2440)-o/oorsteinsson,o (2469) ICCF 2017 1/2-1/2 (50)}) 7... Bg7 8. O-O-O (8. Bc4 O-O 9. O-O b6 10. d5 Bb7 11. Rad1 e5 12. b4 Qd8 13. a4 f5 14. Qe2 a6 15. Nd2 Nd7 16. Bd3 Bc8 17. a5 bxa5 18. bxa5 Nc5 19. Rb1 Qg5 {Sikorsky,R (2432)-Ísólfsson,E (2468) ICCF 2018 1/2-1/2} ) 8... a6 (8... Qe7 9. Bd3 (9. Kb1 a6 (9... O-O 10. g4 c5 11. dxc5 dxc5 12. g5 {1-0 (12) Maldonado Pacheco,J (1989)-Díaz Félez,F ICCF 2007}) 10. h4 (10. Ne1 b5 11. f4 Bb7 12. Bd3 Nd7 13. e5 dxe5 14. dxe5 O-O-O 15. Qe3 f5 16. Be2 Nc5 17. Nd3 Nxd3 18. cxd3 c5 19. Bf3 Bxf3 20. gxf3 Kb7 21. a4 b4 {Hoynck van Papendrecht,F (2183)-Nieuweboer,M (2071) ICCF 2013 1/2-1/2 (29)}) 10... b5 11. d5 Nd7 (11... O-O 12. Bd3 b4 13. Ne2 a5 14. Bb5 Bd7 15. Ned4 exd5 16. exd5 Qf6 17. Qd3 Bg4 18. Qe4 h5 19. Rhe1 a4 20. Qe2 a3 21. b3 Ra7 22. Qc4 Rb7 { Vachtfeidl,P (2299)-Klausen,T (2456) ICCF 2014 0-1 (57)}) 12. h5 g5 13. Nd4 Qf6 14. Qe1 O-O 15. Rh3 Bb7 16. Rf3 Qe7 17. Re3 Nb6 18. a3 Rae8 19. Be2 Be5 20. g3 Qf6 {Owens,J (1300)-Hammerschmidt,V (1980) ICCF 2013 1/2-1/2 (62)}) (9. h4 a6 10. g3 b5 11. h5 g5 12. Bg2 b4 13. Ne2 a5 14. Kb1 Nd7 15. Ne1 Ba6 16. f4 Rc8 17. Nc1 c5 18. dxc5 dxc5 19. e5 c4 20. Qe3 Qc5 {Laine,J (2226)-Rost,D (2460) ICCF 2014 0-1 (33)}) (9. a3 O-O 10. Kb1 a6 11. h4 Nd7 12. g4 b5 13. g5 h5 14. d5 Bb7 15. Bg2 Rac8 16. Nd4 Nb6 17. f4 c5 18. dxc6 Bxc6 19. Qc1 Qb7 20. Nxc6 { Lelgemann,L (2098)-Traut,W (2358) ICCF 2018 0-1 (38)}) (9. g3 a6 10. Bg2 O-O ( 10... b5 11. h4 Bb7 12. Ne1 b4 13. Na4 Nc6 14. d5 Ne5 15. Qxb4 Rb8 16. Nd3 c5 17. Qc3 O-O 18. Nxe5 Bxe5 19. Qd2 exd5 20. exd5 Bc8 21. Rde1 Bf5 22. h5 { Zhdanenia,K (2257)-Alonso Cano,M (2171) ICCF 2014 1/2-1/2 (29)}) 11. h4 b5 12. Ne1 Bb7 13. f4 Nc6 14. e5 b4 15. Ne4 h5 16. g4 Rfd8 17. Nd3 hxg4 18. h5 Rab8 19. hxg6 Nxd4 20. Nf6+ Bxf6 {Zhdanenia,K (2219)-Fagerström,M (2174) ICCF 2013 1-0 (25)}) 9... a6 10. h4 Nd7 11. Ne2 O-O 12. h5 g5 13. Nh2 c5 14. c3 b5 15. Ng4 b4 16. cxb4 cxd4 17. Kb1 Ne5 18. Nxe5 dxe5 19. a3 Bd7 20. Nc1 {Laine,J (2267)-Wilkinson,J (2184) ICCF 2015 1/2-1/2 (42)}) (8... Nc6 9. e5 Qe7 10. exd6 cxd6 11. d5 exd5 12. Nxd5 Qd8 13. h4 O-O 14. Ne3 Qb6 15. c3 Be6 16. Bc4 Bxc4 17. Nxc4 Qa6 18. Na3 b5 19. Qe2 Rab8 20. h5 {Ruhle,E (2223)-Quattrocchi,G (2294) ICCF 2007 0-1 (56)}) 9. h4 (9. e5 Qe7 10. Qf4 (10. h4 Nd7 11. Qf4 b5 12. Ne4 d5 13. Ned2 c5 14. c3 c4 15. Be2 Rb8 16. Kc2 b4 17. Rb1 O-O 18. g4 bxc3 19. bxc3 Qa3 20. Rxb8 Nxb8 21. Rb1 Bd7 {Scaramuzzo,G (2078)-Usbeck,K (2226) ICCF 2013 0-1 (30)}) (10. Bd3 Nd7 11. Rhe1 O-O 12. h4 b5 13. h5 g5 14. Ne4 Bb7 15. Nexg5 hxg5 16. h6 Bxh6 17. Rh1 Kg7 18. Rxh6 {Barría Valdés,B (2013)-Sanjur,R (1887) ICCF 2017 1-0 (30)}) 10... d5 11. Bd3 b6 12. h4 c5 13. Na4 Nd7 14. c3 c4 15. Bc2 b5 16. Nc5 Nxc5 17. dxc5 Qxc5 18. h5 g5 19. Qd4 Qxd4 20. cxd4 Rf8 { Laudati,L (1729)-Gulbis,H (1833) ICCF 2016 0-1 (40)}) 9... b5 10. Kb1 (10. e5 Qe7 11. exd6 (11. Bd3 Bb7 12. Ne4 Nd7 13. Qf4 d5 14. Ned2 O-O 15. Kb1 b4 16. Nf1 c5 17. dxc5 a5 18. Ne3 a4 19. h5 g5 20. Qxb4 Rfb8 {Salminen,J (1984) -Rallabandi,P ICCF 2016 0-1}) 11... cxd6 12. Kb1 O-O 13. d5 e5 14. Qe3 Re8 15. Nd2 Nd7 16. f3 e4 17. Re1 Nc5 18. h5 g5 19. fxe4 Qc7 20. Nd1 Bd7 21. Bd3 a5 { Moujan,P (1905)-Kiddell,T (1868) ICCF 2019 0-1 (53)}) 10... Bb7 11. e5 Qe7 12. exd6 cxd6 13. d5 b4 (13... e5 14. h5 g5 15. a4 bxa4 16. Nxa4 Nd7 17. Re1 O-O 18. Nd4 Qf6 19. Nc6 {Lagergren,H (1942)-Mroczek,J (2052) ICCF 2008 0-1 (64)}) 14. dxe6 bxc3 15. exf7+ Kf8 16. Qxd6 Qxd6 17. Rxd6 Nc6 18. Bc4 {Owens,J (1927) -McCann,D ICCF 2015 1/2-1/2 (51)}) (6... a6 7. e5 Qd8 (7... dxe5 8. dxe5 Qe7 9. Qe2 Qc5 10. g3 {1/2-1/2 (10) Naniwadekar,M (2118)-Smit,F (1919) ICCF 2021}) 8. Bd3 d5 9. Ne2 c5 10. c3 Qb6 (10... Nc6 11. O-O Bd7 12. dxc5 Bxc5 13. Nf4 Be7 14. Qe2 Qc7 15. h3 Rc8 16. Rfe1 h5 17. h4 Kf8 18. c4 dxc4 19. Bxc4 Nd4 20. Nxd4 Qxc4 21. Qe3 Bc5 22. Red1 {Ketelhöhn,B (2346)-Vivante-Sowter,J (2350) ICCF 2007 1-0 (64)}) 11. Qd2 Bd7 12. O-O Nc6 13. dxc5 Bxc5 14. b4 Be7 15. Qf4 g5 16. Qg3 h5 17. Nxg5 Rg8 18. h4 {Ott,P (2191)-Eremin,N (2164) ICCF 2007 1/2-1/2}) ( 6... Bd7 7. Nb5 (7. Qd2 Nc6 8. O-O-O O-O-O 9. Qe3 (9. d5 Ne5 10. Nd4 g5 11. Bb5 Bxb5 12. Ncxb5 a6 13. Nc3 h5 14. a3 Bg7 15. Kb1 Kb8 16. Rhf1 Rde8 17. Qe2 h4 18. f3 {Deneuville,C (2184)-Barth,H (2010) ICCF 2011 0-1 (25)}) (9. Bb5 a6 10. Be2 g5 11. h3 Bg7 12. d5 exd5 13. exd5 Ne7 14. Qd4 Qxd4 15. Nxd4 Ng6 16. Bg4 Rde8 17. Bxd7+ Kxd7 18. Rd2 Bf6 19. Kd1 Re5 20. g3 Ne7 {Mataix Arbona,C (1902) -Flecher,J (1980) ICCF 2016 0-1 (41)}) 9... Kb8 10. Bb5 a6 11. d5 axb5 12. Nxb5 exd5 13. exd5 b6 14. dxc6 Bxc6 15. Nfd4 Bxb5 16. Nxb5 Kb7 17. c4 Qg5 18. Rhe1 Qxe3+ {Lagergren,H (2052)-Flecher,J (1980) ICCF 2016 1/2-1/2 (47)}) (7. Bb5 a6 8. Bc4 Nc6 9. Qd2 g5 10. h3 Bg7 11. O-O-O O-O-O 12. Kb1 Kb8 13. Rhe1 Rhe8 14. e5 dxe5 15. dxe5 Qe7 16. Qe3 Bc8 17. a3 Rxd1+ 18. Rxd1 Rd8 {Schieweck, G-Müller,S (2098) ICCF 2011 1/2-1/2 (28)}) 7... Qd8 8. Be2 a6 9. Nc3 g5 10. d5 Bg7 11. Qd3 O-O 12. O-O Bc8 13. Rad1 Nd7 14. Nd4 Ne5 15. Qe3 Bd7 16. a4 Rc8 17. h3 Qf6 18. Nb3 {Dailido,S (2326)-Malashenkov,A (2337) ICCF 2013 0-1 (70)}) ( 6... Be7 7. Bd3 g5 8. O-O Nd7 9. a4 c6 10. Ne2 e5 11. d5 cxd5 12. exd5 O-O 13. c3 Nc5 14. Bc2 Qg7 15. b4 Na6 16. Nd2 f5 17. f3 Bd7 18. a5 {Ardila Barrera, F-Godoy,M (2079) ICCF 2008 1/2-1/2 (47)}) (6... g5 7. e5 Qe7 8. Bb5+ Nd7 9. exd6 cxd6 10. O-O Bg7 11. Re1 (11. Nd5 Qd8 12. Ne3 O-O 13. c3 a6 14. Bd3 Nf6 15. Qe2 Bd7 16. Nd2 Re8 17. f4 gxf4 18. Rxf4 {Pastor Cutillas,A-Rodríguez Bogado,J ICCF 2018 1-0 (48)}) 11... O-O 12. a4 Nf6 13. a5 Qc7 14. h4 g4 15. Nd2 d5 16. Re3 h5 17. g3 Qd6 18. Nb3 {Santos,M (2420)-Satici,A (2354) ICCF 2007 1/ 2-1/2 (34)}) 7. Qd2 (7. Be2 a6 (7... Be7 8. a4 O-O 9. a5 c5 10. O-O cxd4 11. Nxd4 Ne5 12. f4 Nc6 13. Nb3 Rd8 14. a6 Rb8 15. axb7 Bxb7 16. Ba6 Ba8 17. Bb5 Nb4 18. Rxa7 d5 19. e5 {Brião,P (2117)-Salzmann,S (2240) ICCF 2011 0-1 (27)}) 8. Qd3 (8. O-O g6 (8... g5 9. Qd3 (9. Re1 Bg7 10. e5 Qe7 11. exd6 cxd6 12. Ne4 O-O 13. c3 Rb8 14. Ng3 b5 15. Bd3 Nb6 16. Nf5 Qc7 17. Nxg7 Kxg7 18. b3 Nd5 19. c4 Nb4 20. Bf1 bxc4 {Owens,J (2189)-Debowski,S (2355) ICCF 2016 1-0 (56)}) 9... Bg7 10. Rfd1 b5 11. a4 b4 12. Na2 Rb8 13. e5 Qe7 {1/2-1/2 (13) Manarin,F (1935) -Vieito Soria,L (1841) ICCF 2018}) 9. Qd2 (9. a4 Bg7 10. a5 O-O 11. Qd2 e5 ( 11... Re8 12. Rfd1 Rb8 (12... e5 13. d5 Qd8 14. Qe3 Nf6 15. Nd2 Kh7 16. Nc4 h5 17. h3 Bd7 18. Qd3 Bh6 19. Rdb1 Rf8 20. b4 Kg7 21. Ra3 Ne8 22. b5 axb5 23. Nxb5 f5 24. Nc3 {Walters,G (2437)-Nývlt,Z (2426) ICCF 2011 0-1 (38)}) 13. Qe3 Qe7 14. h3 c5 15. dxc5 Nxc5 16. e5 d5 17. Nd4 Bd7 18. f4 b5 19. axb6 Rxb6 { Lelgemann,L (2198)-Fischer,W (2449) ICCF 2016 0-1 (56)}) 12. Nd5 Qd8 13. dxe5 Nxe5 14. Nxe5 dxe5 15. Rfd1 Be6 16. Qb4 Bxd5 17. Rxd5 Qg5 18. Qxb7 Qh4 19. Rd7 Rad8 20. g3 {1-0 (20) Owens,J (1300)-Tilley,W (1612) ICCF 2013}) 9... Bg7 10. Rad1 O-O 11. Rfe1 b6 12. e5 dxe5 13. Nxe5 Nxe5 14. dxe5 Qe7 15. Bf3 Ra7 16. Qd4 c5 17. Qe3 Rd7 18. Rxd7 Qxd7 19. Ba8 Rd8 {Angres,R (1958)-Gitananda,R (1910) ICCF 2017 0-1 (45)}) 8... g6 9. a4 b6 10. Qc4 Qd8 11. d5 e5 12. O-O Bg7 13. a5 b5 14. Qb4 f5 15. Nd1 Nc5 16. Nd2 Qg5 17. c4 bxc4 18. Ne3 Bd7 {Maestro Hernández,J (2134)-Marturano,M (2101) ICCF 2020 1-0 (63)}) (7. Bd3 c6 (7... a6 8. O-O g5 9. Re1 g4 10. Nd2 {1-0 (10) Shtrikman,R (1794)-Akinal,E (2323) ICCF 2012}) (7... Qd8 8. O-O (8. a4 g6 9. O-O Bg7 10. Qd2 O-O 11. a5 a6 12. Rfe1 Rb8 13. Na4 c5 14. c3 b5 15. axb6 Nxb6 16. dxc5 Nxa4 17. Rxa4 dxc5 18. Qe2 Qb6 19. Nd2 Qc7 {Owens,J (2113)-Kuna,H (2190) ICCF 2016 1/2-1/2 (38)}) 8... a6 9. Qe2 Be7 10. e5 d5 11. Nd1 b5 12. Ne3 c5 13. c3 O-O 14. b3 Bb7 15. Nd2 cxd4 16. cxd4 f6 17. f4 Qb6 18. Nc2 f5 19. g4 {Graupera,C (1526)-Taylor,B ICCF 2016 1/2-1/2 (25)}) (7... g6 8. Qd2 Bg7 9. O-O O-O 10. a4 e5 11. Nd5 Qd8 12. dxe5 c6 13. Ne3 Nxe5 14. Nxe5 dxe5 15. Rad1 Be6 16. Bc4 Qxd2 17. Rxd2 Bxc4 18. Nxc4 Rfd8 19. Rfd1 {Jefferson,N (2108)-Clark,S (2040) ICCF 2017 1-0 (44)}) 8. Ne2 (8. O-O e5 9. d5 Be7 10. Nd2 O-O 11. Nc4 Qg5 12. a4 Nf6 13. a5 cxd5 14. exd5 Bd7 15. g3 h5 16. Qe2 Bh3 17. Rfe1 h4 18. Qe3 Qg4 19. a6 b6 {Owens,J (2122)-Bredenhof,B (2234) ICCF 2016 1/2-1/2 (30)}) 8... e5 (8... g6 9. c3 Bg7 10. a4 Qe7 11. O-O e5 12. h3 O-O 13. a5 Nf6 14. Nd2 Bd7 15. Qb3 Be6 16. Qa3 Rfe8 17. f4 Nh5 18. dxe5 dxe5 19. Qxe7 {Bobel,P (2299)-Benetti,P (2122) ICCF 2016 1-0 (44)}) 9. c3 Nb6 10. O-O Be7 11. Nd2 Bg4 12. f3 Bh5 13. a4 O-O 14. a5 Nd7 15. Nc4 Qg5 16. Qc2 Bg6 17. f4 Qh4 18. Rf3 Rfe8 {Owens,J (1355)-Thys,H (1697) ICCF 2014 1-0 (33)}) (7. Qe2 c6 (7... a6 8. Qd3 b5 9. e5 dxe5 10. Qe4 Rb8 11. dxe5 Qe7 12. O-O-O Bb7 13. Qf4 g5 14. Qd4 Bg7 15. Kb1 c5 16. Qg4 Nxe5 17. Nxe5 Bxe5 18. h4 Rd8 {Buchmann,H (1927)-Lukas,M (1997) ICCF 2015 0-1 (29)}) 8. e5 Qd8 9. exd6 Bxd6 10. Ne4 (10. O-O-O O-O 11. g4 a5 12. h4 a4 13. g5 a3 14. b3 Bf4+ 15. Kb1 Qa5 16. Qe1 h5 17. Bd3 g6 18. Ne2 Bc7 19. Ng3 {Iriarte Gómez,E (2249)-Mignon, F (2081) ICCF 2006 0-1 (46)}) 10... Be7 11. O-O-O Qa5 12. Kb1 Qc7 13. Qe3 b6 14. Be2 Bb7 15. Ne5 Nxe5 16. dxe5 Qxe5 17. f4 Qc7 18. f5 exf5 {Del Vivo, M-Sardella,A (2208) ICCF 2012 1-0 (48)}) 7... a6 (7... c6 8. O-O-O Be7 (8... e5 9. dxe5 Nxe5 10. Nxe5 Qxe5 11. f4 Qa5 12. Kb1 Be7 13. Be2 b5 (13... Be6 14. h4 b5 15. f5 Bc8 16. Bf3 b4 17. Ne2 Ba6 18. Nd4 Rc8 19. e5 dxe5 20. Ne6 fxe6 21. Qd7+ Kf8 22. Bh5 Qc5 23. b3 g6 24. Bxg6 Rg8 25. Qxe6 {Engels,J-Cerne,P (1839) ICCF 2018 1-0 (44)}) 14. Bf3 b4 (14... Rb8 15. Rhe1 b4 16. Ne2 O-O 17. Nd4 Rb6 18. Qd3 c5 19. Nf5 {Pérez Ferrís,M (2190)-Aykent,S (2135) ICCF 2011 1/2-1/2 (40)}) 15. Ne2 Be6 16. Nc1 Rb8 17. g4 Rb6 18. Be2 Qc5 19. f5 Bc8 20. h4 { Belanoff,S (2214)-Marconi,R (1986) ICCF 2017 1-0 (39)}) 9. Kb1 (9. Qe3 e5 10. h4 Nb6 11. a4 Bg4 12. a5 Nd7 13. Be2 Bxf3 14. gxf3 O-O 15. d5 a6 16. Qd2 Qf4 17. dxc6 Qxd2+ 18. Rxd2 bxc6 19. Nd1 g6 20. h5 Kg7 {Fernández Medina,E (2293) -Portych,V (1987) ICCF 2011 1/2-1/2}) 9... e5 10. Be2 O-O 11. Qe3 b5 12. d5 b4 13. dxc6 bxc3 14. cxd7 Bxd7 15. Qxc3 Rfc8 16. Qe3 Rab8 17. Rhg1 a5 18. g4 a4 19. b3 {Velilla Velasco,F (2547)-Benzoni,A (2350) ICCF 2008 1/2-1/2 (34)}) ( 7... e5 8. Nd5 Qd8 9. Qa5 Nb6 10. Nxb6 cxb6 11. Qd5 Qc7 12. dxe5 dxe5 13. O-O-O Bc5 14. Qxe5+ Qxe5 15. Nxe5 Bxf2 16. Bc4 Rf8 17. Rhf1 Be3+ 18. Kb1 Be6 19. Bxe6 {Lelgemann,L (2198)-Packroff,H (2251) ICCF 2016 1-0 (39)}) 8. O-O-O (8. Bd3 c5 (8... b5 9. a3 Bb7 10. O-O g6 11. Rfe1 Bg7 12. Rac1 O-O 13. Ne2 c5 14. c3 Qe7 15. Ng3 Rac8 16. Qe3 Rfd8 17. h3 Nb6 18. b3 d5 19. e5 c4 {Capuzzi,G (1820) -Shannon,P (1934) ICCF 2014 0-1 (35)}) 9. e5 (9. Qe3 cxd4 10. Nxd4 b6 11. f4 Bb7 12. O-O Be7 13. Rad1 O-O 14. a4 Rac8 15. Be2 Kh8 16. Rf3 Rfd8 17. Rdf1 g6 18. Rh3 Bf8 {Blessing,R (2324)-Sörenfors,P (2292) ICCF 2007}) 9... dxe5 10. Ne4 Qf4 11. dxe5 Qxd2+ 12. Kxd2 b5 13. a4 (13. c4 Bb7 14. Rhe1 bxc4 15. Bxc4 Nb6 16. Rac1 Be7 17. Ke3 O-O 18. Red1 a5 19. Nd6 Bc6 20. g3 Rfd8 21. Bd3 f6 22. Be4 Nd5+ 23. Ke2 Rab8 24. Rd2 fxe5 {Kmiecik,K (2204)-Vohl,G (2446) ICCF 2010 0-1 (45)}) 13... c4 14. Be2 Bb7 15. Nd6+ Bxd6 16. exd6 O-O 17. Rhd1 Nc5 18. axb5 axb5 {1/2-1/2 (18) Jiricek,S-Trembeckí,L (2323) ICCF 2008}) (8. a4 b6 ( 8... Be7 9. Be2 O-O 10. O-O c6 11. a5 e5 12. Rfd1 Re8 13. d5 Qg6 14. Qe3 Nf6 15. dxc6 bxc6 16. Qb6 Bh3 17. Ne1 Bd7 18. Bxa6 Reb8 19. Qc7 Qg4 20. Be2 { Lelgemann,L (2198)-Köstner,W (2277) ICCF 2016 1/2-1/2 (47)}) (8... g5 9. h3 Bg7 10. a5 h5 11. Be2 g4 12. hxg4 hxg4 13. Rxh8+ Bxh8 14. e5 Qg6 15. Ng5 dxe5 16. d5 Bf6 17. Nge4 exd5 18. Nxd5 Bd8 19. Ng3 f5 20. Bd3 {Ballow,J (2417) -Brookes,J (2468) ICCF 2016 1/2-1/2 (29)}) 9. Bc4 (9. Be2 Bb7 10. d5 g6 11. O-O Bg7 12. Bc4 O-O 13. Rfe1 exd5 14. Nxd5 Qd8 15. c3 Re8 16. Bb3 Nc5 17. Bc2 a5 18. Nd4 c6 19. Nf4 h5 20. Rad1 Bh6 {Welti,M (1996)-Germann,J (2229) ICCF 2012 0-1 (37)}) (9. O-O-O Bb7 (9... Qd8 10. Kb1 Be7 11. Qe3 Bb7 12. h4 b5 13. axb5 axb5 14. Bxb5 c6 15. Be2 O-O 16. g4 Qa5 17. Kc1 c5 18. g5 cxd4 19. Nxd4 Nc5 20. gxh6 g6 21. h5 {Lelgemann,L (2225)-Martins,S (2117) ICCF 2015 1/2-1/2 (46)}) 10. Kb1 g6 11. Bc4 Bg7 12. Rhe1 b5 13. axb5 O-O 14. bxa6 Bxa6 15. Bb3 Bb7 16. h4 Rfb8 17. h5 g5 18. e5 Qf5 19. Qd3 Qg4 20. Nd2 {Lelgemann,L (2198)-Hempel,R (2215) ICCF 2016 0-1 (28)}) (9. Bd3 Bb7 10. h3 g6 11. O-O Bg7 12. Rfe1 O-O 13. Rad1 Qd8 14. Qf4 Qe7 15. Qd2 Rfe8 16. Bc4 Kh7 17. Re3 c6 18. Ba2 Red8 19. Rd3 b5 20. e5 d5 {Lelgemann,L (2198)-Koch,H (2310) ICCF 2016 0-1 (45)}) 9... Bb7 10. O-O g6 (10... Be7 11. Rfe1 h5 12. d5 e5 13. Na2 g5 14. Qe2 {1/2-1/2 (14) Manarin,F (1935)-Senzacqua,F (2076) ICCF 2018}) 11. Rad1 Qd8 12. Ne1 Bg7 13. f4 O-O 14. Nf3 c6 15. e5 d5 16. Bd3 c5 17. Ra1 Re8 18. Nd1 cxd4 19. Nf2 Nb8 { Meißner,R (2217)-Castilho,M (2183) ICCF 2019 1/2-1/2 (48)}) (8. Be2 Qd8 9. a4 b6 10. O-O Be7 11. d5 e5 12. h3 O-O 13. Rfe1 a5 14. Bd3 Nc5 15. Qe3 Bb7 16. Qe2 Qc8 17. Rad1 Bf6 18. b3 Be7 19. Qe3 Bf6 {Gauna,J (2238)-Vélez,R (2199) ICCF 2016 0-1 (37)}) (8. h4 g6 9. a4 Bg7 10. Be2 b6 11. O-O-O Bb7 12. Qe3 O-O 13. Kb1 Qe7 14. Nd2 (14. g4 b5 15. axb5 axb5 16. Bxb5 c6 17. Bc4 Ra5 18. Nd2 c5 19. Nb3 cxd4 20. Rxd4 Raa8 21. g5 h5 22. Rhd1 Bxd4 23. Qxd4 Nc5 24. f4 Rfc8 25. f5 Ba6 {Mataix Arbona,C (1903)-Santamaría Navarro,F (1992) ICCF 2015 0-1 (36)}) 14... b5 15. axb5 axb5 16. Nxb5 c5 17. h5 g5 18. d5 Ba6 19. dxe6 fxe6 { Diotallevi,M (2093)-Catozzi,M (2237) ICCF 2013 0-1}) 8... Qd8 (8... Be7 9. Bd3 (9. Be2 g5 10. d5 e5 11. Kb1 Nc5 12. h4 g4 13. Nh2 h5 14. b4 Nd7 15. f3 a5 16. a3 axb4 17. Nb5 Ra4 18. axb4 c6 19. dxc6 bxc6 20. Nxd6+ Bxd6 {Mathe,I (2410) -Florea,M (2167) ICCF 2007 0-1 (31)}) 9... b5 10. Rhe1 h5 11. Kb1 Qh6 12. Qe2 O-O 13. g3 Bb7 14. e5 b4 15. Ne4 d5 16. Ned2 c5 17. dxc5 Nxc5 18. Nd4 a5 19. f4 a4 20. N2f3 {Lanin,B (2094)-Zuev,D (2200) ICCF 2010 0-1 (39)}) (8... b5 9. e5 Qd8 (9... Qe7 10. h4 (10. Kb1 Bb7 11. Bd3 b4 12. Ne2 d5 13. h4 c5 14. dxc5 Qxc5 15. Qf4 Qb6 16. Rhe1 Nc5 17. Nfd4 g6 18. h5 g5 19. Qg4 O-O-O 20. f4 gxf4 21. Qxf4 Rd7 {Murden,C (2445)-Anderson,B (2470) ICCF 2013 1/2-1/2}) 10... d5 11. g4 c5 12. dxc5 Qxc5 13. Bd3 g6 14. Kb1 Bg7 15. Ne2 Rb8 16. Rde1 Nb6 17. Nfd4 Bxe5 18. f4 Bg7 19. h5 gxh5 20. Rxh5 {Bobel,P (2299)-Walczak,T (2153) ICCF 2016 1/ 2-1/2 (47)}) 10. Qf4 Be7 11. h4 Bb7 12. Rh3 O-O 13. Bd3 f5 14. Rg3 Kh8 15. Rg6 Rf7 16. Rxe6 b4 17. Ne2 Nf8 18. Rxe7 Qxe7 19. Qg3 Ne6 20. Bc4 {Freire,D (2043) -Satosuo,R (2015) ICCF 2014 1-0 (63)}) (8... Rb8 9. h4 b5 10. Kb1 Qd8 11. g4 c5 12. Bh3 g6 13. g5 hxg5 14. Nxg5 cxd4 15. Qxd4 Rxh4 16. Nxf7 Kxf7 17. Bxe6+ Ke8 18. Nd5 Ne5 19. Bxc8 Rxc8 20. f4 {Lara Ruiz,J (2291)-Rasmussen,E (2271) ICCF 2017 1/2-1/2 (36)}) (8... g5 9. e5 dxe5 (9... Qg7 10. exd6 Bxd6 11. Kb1 b5 12. Bd3 g4 13. Be4 Rb8 14. Ne1 O-O 15. h3 Nf6 16. Bd3 g3 17. fxg3 b4 18. Ne4 Nxe4 19. Bxe4 f5 20. Bd3 Qxd4 21. Qxh6 {Fels,B (2162)-Soulas,P (1985) ICCF 2009 1-0 (64)}) 10. dxe5 (10. Nxe5 Bg7 11. g3 O-O 12. f4 Qe7 13. h4 Rd8 14. Bd3 gxh4 15. Rxh4 f5 16. Qh2 Nxe5 17. dxe5 Kf7 18. g4 Rh8 19. Qh3 fxg4 20. Rxg4 {Pastor Cutillas,A-Legotin,A ICCF 2018 1-0}) 10... Qe7 11. h3 Qb4 12. a3 Qa5 13. Bd3 Bxa3 14. bxa3 Qxa3+ 15. Kb1 Qb4+ 16. Ka1 Nxe5 17. Nxe5 Qa5+ 18. Kb1 Qxe5 19. h4 gxh4 20. Bb5+ {Lagergren,H (1949)-Honn,J (2087) ICCF 2006 1-0}) (8... Qe7 9. d5 e5 10. Kb1 g6 11. h4 h5 12. Qe2 Nf6 13. Nd2 Bh6 14. Nc4 O-O 15. f3 Bd7 16. Qe1 Rfb8 17. Bd3 Qd8 18. Qf2 Bf8 19. g4 c5 20. dxc6 {Bucsa,I (2279)-Gullotto,V (2293) ICCF 2017 1/2-1/2 (75)}) 9. h4 (9. Kb1 b5 (9... c5 10. dxc5 Nxc5 11. e5 d5 12. Nd4 b5 13. g4 Bd7 14. Bg2 Be7 15. f4 Rc8 16. h4 Qa5 17. Qc1 b4 18. Nce2 Bb5 19. Qd2 Na4 20. Nb3 Qb6 21. Ned4 {Kreindl,H (2350)-LeBled,P (2411) ICCF 2015 1-0 (52)}) 10. h4 (10. Qe3 b4 (10... c5 11. dxc5 Nxc5 12. e5 d5 13. Nd4 b4 14. Nce2 Bd7 15. f4 g6 16. h3 h5 17. g3 Qc7 18. Bg2 Bg7 19. g4 g5 20. Rhe1 hxg4 {Zhdanenia,K (2018)-Markoja,J (2076) ICCF 2012 1-0 (36)}) (10... Be7 11. e5 O-O 12. Rg1 Bb7 13. Bd3 b4 14. Ne4 d5 15. Nf6+ Nxf6 16. exf6 Bxf6 17. g4 Re8 18. h4 e5 19. Nxe5 Bxe5 20. dxe5 Qxh4 21. g5 hxg5 22. Rxg5 {Zhdanenia,K (2018) -Deforel,J (2187) ICCF 2012 1-0 (38)}) 11. Ne2 c5 12. e5 d5 13. dxc5 Bxc5 14. Ned4 a5 15. h4 a4 16. Rh3 Qb6 17. Rg3 g6 18. h5 g5 19. Nh2 b3 20. cxb3 axb3 21. a3 Ba6 {Leupold,V (2439)-Pierzak,R (2494) ICCF 2012 1/2-1/2 (49)}) 10... c5 ( 10... Bb7 11. d5 (11. a3 c6 12. Qe3 c5 13. dxc5 Nxc5 14. e5 d5 15. Nd4 h5 16. Be2 Qc7 17. f4 Ne4 18. Rd3 Bc5 19. Rhd1 Bb6 20. Bf3 Nc5 21. R3d2 g6 {Ribés Colom,J (2174)-Gómez-Galán Arense,J (2163) ICCF 2012 1/2-1/2 (51)}) 11... e5 12. a3 Be7 13. Qe3 (13. g3 c5 14. dxc6 Bxc6 15. Nd5 Bxd5 16. Qxd5 O-O 17. Bh3 Nf6 18. Qb3 Qc7 19. Bf5 h5 20. Ng5 Qc4 21. Rhe1 Qxb3 {Fels,B (2108) -Lukasevicius,R (2105) ICCF 2012 1/2-1/2}) 13... c6 14. dxc6 Bxc6 15. Nd5 Bxd5 16. Rxd5 Qc7 17. Rd1 Nc5 18. g4 Qb7 19. Nd2 Ne6 20. Nb3 Rc8 21. Bd3 Nf4 22. Nc1 {Maccapan,F (2165)-Mastronardi,D (2062) ICCF 2011 0-1 (36)}) (10... Be7 11. e5 O-O 12. Bd3 d5 13. Ne2 c5 14. Nf4 c4 15. Be2 b4 16. Rh3 Bb7 17. Nh5 Kh7 18. Qf4 Qb8 19. Rg3 Rg8 20. Qxf7 Qf8 21. Qg6+ Kh8 22. Ng5 {Rogemont,A (2248)-Schunken, R (1991) ICCF 2010 1-0 (26)}) 11. e5 (11. dxc5 Nxc5 12. a3 (12. e5 d5 13. Nd4 Qc7 14. Qe3 h5 15. Nce2 g6 16. Ng1 Nd7 17. f4 Nb6 18. b3 Bd7 19. Ngf3 Rb8 20. Ng5 Bc5 21. Rh3 Nc4 22. bxc4 bxc4+ 23. Kc1 O-O {Lelgemann,L (2180)-Boos,M (2376) ICCF 2017 0-1 (53)}) 12... Be7 13. Rh3 Bb7 14. Qe3 Qb6 15. g4 Na4 16. Nxa4 Qxe3 17. fxe3 bxa4 18. Rd4 Bc6 19. e5 Bxf3 20. Rxf3 dxe5 21. Rxa4 Bxh4 22. Rh3 {Lelgemann,L (2180)-Höppenstein,M (2341) ICCF 2017 0-1 (69)}) 11... d5 12. g4 b4 13. Ne2 c4 14. g5 c3 15. Qe3 Nb6 16. b3 Qd7 17. g6 a5 18. gxf7+ Kxf7 19. Nc1 a4 20. Bd3 Qa7 {Tramacere,S (2252)-Walther,J (2204) ICCF 2020 1-0 (46)}) ( 9. Qf4 b5 10. a3 (10. Kb1 b4 (10... c5 11. dxc5 Nxc5 12. e5 d5 13. h4 Qb6 14. g4 b4 15. Ne2 a5 16. Ned4 Bd7 17. Bd3 g6 18. Qf6 Rg8 19. Qf4 a4 20. Qe3 Rb8 21. Rc1 Rh8 {Lelgemann,L (2180)-Langer,R (2420) ICCF 2017 0-1 (47)}) 11. Ne2 g6 12. Qd2 a5 13. h4 Bg7 14. g4 Bb7 15. Ng3 O-O 16. Qf4 a4 17. Bg2 c5 18. Qxd6 Ra6 19. Qf4 cxd4 20. g5 h5 21. Qd2 b3 {Geus,A (2079)-Laan,A (2162) ICCF 2016 0-1 (25)}) 10... g6 11. e5 d5 12. Bd3 c5 13. dxc5 Nxc5 14. h4 Bg7 15. Ne2 Qc7 16. Qe3 Rb8 17. Ned4 b4 18. axb4 Rxb4 19. c3 Rb6 20. Bc2 a5 {Vorontsov,G (1941)-Alifanov,O (2265) ICCF 2018 0-1 (50)}) (9. Bc4 b5 10. Be2 c5 11. dxc5 Nxc5 12. Qd4 Bb7 13. a3 Be7 14. e5 d5 15. Qg4 O-O 16. Nd4 Qb6 17. f4 b4 18. axb4 Qxb4 19. f5 Bg5+ 20. Kb1 Rab8 {Gülker,L-Josefsson,K (2301) ICCF 2006 0-1 (37)}) (9. Bd3 c5 ( 9... Be7 10. h4 (10. Ne2 b5 11. d5 e5 12. Kb1 O-O 13. g4 Nc5 14. Rhg1 Bg5 15. Nxg5 Qxg5 16. Qxg5 hxg5 17. f3 Bd7 18. Rh1 Kh7 19. h4 Rh8 20. h5 a5 21. c3 Rhb8 {Middendorf,R-Freytag,W (2006) ICCF 2007 1/2-1/2 (30)}) 10... c5 11. dxc5 Nxc5 12. e5 dxe5 13. Nxe5 Qc7 14. f4 O-O 15. g4 b5 16. g5 Bb7 17. Rhg1 Nxd3+ 18. Qxd3 Rad8 19. Qh3 Rxd1+ 20. Rxd1 hxg5 {De Ridder,M-Moens,A (2153) ICCF 2010 1/ 2-1/2 (33)}) 10. Kb1 Be7 11. dxc5 Nxc5 12. e5 d5 13. Nd4 Qc7 14. f4 Bd7 15. Qe3 O-O-O 16. f5 Kb8 17. Rhf1 Nxd3 18. Rxd3 g6 19. fxg6 fxg6 20. Rf7 Rde8 { Petrillo,M (2337)-Vegjeleki,A (2224) ICCF 2010 1/2-1/2}) (9. d5 e5 10. g3 Be7 11. h4 c5 12. dxc6 bxc6 13. Bh3 Rb8 14. b3 Nb6 15. Bxc8 Qxc8 16. Qe3 O-O 17. Nh2 a5 18. g4 d5 19. exd5 cxd5 20. Nxd5 Nxd5 {Lelgemann,L (2072)-Papenfuß,I (2480) ICCF 2019 0-1 (25)}) 9... b5 (9... c5 10. dxc5 Nxc5 11. e5 d5 12. Kb1 Qc7 13. Nd4 Bd7 14. f4 O-O-O 15. Qe3 Kb8 16. g4 Rc8 17. Bg2 Na4 18. Nxa4 Bxa4 19. Rd2 Bc5 20. c3 Be7 {1/2-1/2 (20) Mayr,F (2280)-Pino Munoz,F (2075) ICCF 2011}) 10. g4 (10. e5 b4 (10... d5 11. Ne2 (11. Rh3 c5 12. dxc5 Nxc5 (12... Bxc5 13. Rg3 Qb6 (13... g6 14. Nxd5 exd5 15. Qxd5 Bxf2 16. Rg4 Qc7 17. Qxa8 Be3+ 18. Nd2 Nb6 19. Qf3 Bxg4 20. Qxg4 Qxe5 21. Kb1 O-O 22. Nf3 Qc5 23. h5 { 1/2-1/2 (23) De Carlos Arregui,I (2343)-Beilin,S (2396) ICCF 2015}) 14. Rxg7 Kf8 15. Rg4 Bxf2 16. Kb1 h5 17. Rg5 Be3 18. Qe1 Ra7 19. Bd3 Bxg5 20. hxg5 Kg8 21. Qg3 h4 22. Qg4 b4 23. Na4 Qc7 24. g6 {Wunderlich,H (2611)-Velilla Velasco, F (2579) ICCF 2009 1-0 (62)}) 13. a3 Bb7 14. Nd4 h5 15. Be2 (15. Kb1 Be7 16. Be2 Qc7 17. f4 Rd8 18. g4 Ne4 19. Nxe4 dxe4 20. gxh5 Kf8 21. Qe3 Kg8 22. Rg3 Rh7 23. Rdg1 Bf8 24. h6 Qb6 25. hxg7 Bc5 26. c3 b4 27. axb4 Bxd4 28. cxd4 Qxb4 29. h5 Bd5 30. Qc3 Qa4 31. b3 Rb8 32. Bd1 Qb5 33. Qc1 a5 34. Rc3 Qd7 35. h6 Rxh6 36. f5 Rh4 37. f6 e3 38. Bc2 a4 39. Rc7 Qxc7 40. Bh7+ Kxh7 41. Qxc7 { 1-0 (41) Schäfer,U (2383)-Bürger,A (2331) ICCF 2015 1 d4 Nf6 2 Nf3 e6: Torre, -London and Colle Systems}) 15... g6 16. f4 (16. Kb1 Qb6 17. g4 hxg4 18. Bxg4 O-O-O 19. h5 gxh5 20. Rxh5 Rxh5 21. Bxh5 f6 22. f4 fxe5 23. fxe5 Ne4 24. Nxe4 dxe4 25. Bg4 Be7 26. Bxe6+ Kb8 {Velilla Velasco,F (2563)-Stalmach,K (2565) ICCF 2011 1/2-1/2 (54)}) 16... Nd7 (16... Be7 17. g4 hxg4 18. Bxg4 Rxh4 19. Rxh4 Bxh4 20. b4 Ne4 21. Nxe4 dxe4 22. Bxe6 Bg3 23. Bb3 g5 24. Qe2 Bxf4+ 25. Kb1 Qc7 26. Nf5 Qxe5 {De Carlos Arregui,I (2336)-Rizzo,R (2331) ICCF 2014 1-0 (35)}) 17. g4 hxg4 18. Bxg4 Nxe5 19. fxe5 Bh6 20. Re3 Qxh4 21. Rg1 Qh2 22. Qxh2 Bxe3+ {Iacomi,S (2307)-Jenkins,R (2311) ICCF 2019 1/2-1/2 (39)}) 11... c5 12. g4 c4 (12... Qc7 13. Qf4 g6 14. Kb1 Bg7 15. Re1 Bb7 16. c3 c4 17. Ka1 b4 18. cxb4 Qb6 19. a3 a5 20. bxa5 Rxa5 21. Rh3 O-O 22. Nc3 Rfa8 23. Nb1 Bf8 24. Nh2 { Laine,J (2267)-Pallett,R (2029) ICCF 2015 0-1 (39)}) 13. g5 hxg5 14. Nxg5 Nb6 15. Qf4 Ra7 16. Kb1 b4 17. Qg4 Qd7 18. Rh3 Rh6 19. Rf3 f5 20. Qh3 Qb7 21. Ka1 Qc6 22. Qg3 {Velilla Velasco,F (2550)-Rodríguez Rey,J (2352) ICCF 2008 1/2-1/ 2 (52)}) 11. Ne2 d5 12. Kb1 (12. g4 c5 13. g5 hxg5 14. Nxg5 c4 15. Qf4 Qe7 16. Qg4 c3 17. b3 a5 18. a4 bxa3 19. Nxc3 Ba6 20. Bb5 Rc8 21. Qf3 Bb7 22. Kb1 g6 23. Rdg1 Rc7 {McCann,D-Romanov,L (2011) ICCF 2013 1-0 (38)}) 12... c5 13. dxc5 Bxc5 14. Ned4 Qc7 15. Re1 Bb6 16. g4 Nc5 17. Qe3 Ne4 18. Bd3 g6 19. Rd1 Bb7 20. Rhf1 Rb8 21. Qf4 Qe7 {Belanoff,S (2185)-Latas,P (2163) ICCF 2014 1/2-1/2}) (10. Qf4 b4 (10... c5 11. e5 d5 12. Ne2 c4 13. Kb1 a5 14. g4 b4 15. g5 a4 16. gxh6 gxh6 17. Rh3 Ba6 18. Nh2 c3 19. bxc3 Qc7 20. Qc1 Rb8 21. c4 Bxc4 {Pérez Ferrís,M (2208)-Lopes,R (2159) ICCF 2011 0-1 (25)}) 11. Ne2 Bb7 12. Ng3 c5 13. d5 e5 14. Qd2 Nf6 15. Be2 Qa5 16. Kb1 Be7 17. Qd3 Qc7 18. Nd2 h5 19. Rdf1 g6 20. f4 exf4 21. Rxf4 Nd7 {Kaupat,T (1678)-Bañón Cifuentes,E ICCF 2012 1/2-1/ 2 (40)}) (10. Bd3 c5 (10... Bb7 11. d5 e5 12. h5 Be7 13. Ne2 Nc5 14. Ng3 O-O 15. Nf5 Re8 16. Rh3 Bf8 17. Rg3 Kh8 18. Qe3 c6 19. dxc6 Bxc6 20. Kb1 Qf6 21. Nh2 Qe6 {Casella,S (2113)-Innorta,G ICCF 2008 0-1 (33)}) (10... Be7 11. e5 Bb7 12. Qf4 b4 13. Ne2 O-O 14. Rh3 Qe8 15. Rg3 Kh8 16. Kb1 dxe5 17. dxe5 a5 18. Nfd4 Nc5 19. Qg4 Rg8 20. Bb5 c6 21. Bc4 Rd8 22. h5 {Casella,S (2113)-Van Arsdale,P ICCF 2007 0-1 (61)}) 11. dxc5 Nxc5 12. e5 d5 13. Ne2 Qc7 14. Ned4 Bb7 15. Qf4 Rc8 16. Kb1 Be7 17. g4 g6 18. a3 Qb6 19. h5 g5 20. Qe3 b4 21. axb4 Qxb4 {Gavrijski,D (1993)-Andéer,S (2443) ICCF 2010 0-1 (48)}) (10. a3 c5 (10... Be7 11. Kb1 c5 12. e5 dxe5 13. dxe5 Bb7 14. Nxb5 axb5 15. Bxb5 Bc8 16. g4 Qc7 17. g5 Rb8 18. a4 h5 19. g6 O-O 20. gxf7+ Rxf7 21. Ng5 Bxg5 22. hxg5 {Soler Nadal, J (2123)-Marquardt,G (2337) ICCF 2011 0-1 (30)}) 11. dxc5 dxc5 12. e5 Bb7 13. Qf4 b4 14. axb4 cxb4 15. Ne4 Rc8 16. Kb1 Qc7 17. Bd3 Bxe4 18. Qxe4 Nc5 19. Qxb4 Be7 20. Be2 O-O 21. Rd4 Rb8 {Vasile,C (2046)-Galjé,H (2179) ICCF 2020 0-1 (43) }) (10. d5 e5 11. a3 (11. Kb1 Be7 12. Bd3 Nc5 13. Rdg1 b4 14. Nd1 a5 15. g4 Rb8 16. Ne3 a4 17. g5 h5 18. g6 O-O 19. gxf7+ Rxf7 20. Ng5 Bxg5 21. Rxg5 Qf6 22. Nf5 Bxf5 {Oker,B (1778)-Evans,D ICCF 2010 1/2-1/2}) 11... Nf6 (11... h5 12. Kb1 Nf6 13. Ng5 Bd7 14. f4 Be7 15. Be2 Qb8 16. fxe5 dxe5 17. d6 cxd6 18. Nd5 Nxd5 19. Qxd5 Bxg5 20. hxg5 Ke7 21. g6 Be6 22. Qd2 f6 23. g4 {Anand,A (2191)-Hegde, R ICCF 2017 1/2-1/2 (49)}) (11... Be7 12. Be2 Rb8 13. g4 b4 14. axb4 Rxb4 15. Qe3 Nf8 16. g5 Ng6 17. Rdg1 Bd7 18. h5 Nf4 19. gxh6 gxh6 20. Rg3 Qb8 21. b3 a5 22. Na2 Rb6 23. Nc3 {Deneuville,C (2328)-Fillon,D (2304) ICCF 2007 1/2-1/2 (35) }) 12. Ne1 Bd7 13. f3 h5 14. g3 g6 15. Kb1 Bh6 16. Qh2 O-O 17. Bh3 a5 18. Nd3 b4 19. Bxd7 Nxd7 20. axb4 axb4 21. Nxb4 Qb8 {Lelgemann,L (2189)-Bösenberg,E (2457) ICCF 2017 0-1 (27)}) 10... c5 (10... Bb7 11. d5 e5 (11... g6 12. Nd4 Qe7 13. Nb3 Bg7 14. Na5 Rb8 15. f4 Ba8 16. Re1 Qf6 17. Rh3 O-O 18. g5 Qd4 19. Rd3 Qb6 20. b4 Rbe8 21. Bg2 h5 22. Rf1 Qa7 23. Ne2 {Laine,J (2267)-Dufour,M (2277) ICCF 2015 1/2-1/2 (36)}) 12. Kb1 Be7 (12... Nc5 13. Qe3 Bc8 14. Rg1 Bd7 15. b4 Na4 16. Nxa4 bxa4 17. a3 Qb8 18. c4 Qb6 19. c5 dxc5 20. Nxe5 cxb4 21. Qxb6 cxb6 22. d6 b5 23. axb4 g5 24. Nxd7 {Windhausen,G (2510)-Jensen,E (2491) ICCF 2014 1-0 (42)}) 13. Ne2 (13. Bd3 Nc5 14. g5 c6 (14... b4 15. Ne2 c6 16. Bc4 Qb6 17. Ng3 h5 18. Ne1 g6 19. f4 exf4 20. Qxf4 O-O 21. Nf3 Nd7 22. Rhg1 cxd5 23. exd5 Qc7 24. Nxh5 {1-0 (24) Laine,J (2265)-Weiss,L (2076) ICCF 2014}) (14... Qd7 15. Rdg1 h5 16. a3 g6 17. Bf1 c6 18. Ne1 a5 19. Nd3 Nxd3 20. Qxd3 b4 21. Bh3 Qd8 22. dxc6 Bxc6 {Pérez Ferrís,M (2162)-Corral García,P ICCF 2011 0-1 (40)}) 15. dxc6 Bxc6 16. Nd5 {1/2-1/2 (16) Bendaña Guerrero,G (2434)-Freeman,M (2517) ICCF 2011}) 13... c6 14. dxc6 Bxc6 15. Ng3 Qb6 16. Bg2 Nc5 17. Ne1 g6 18. f4 O-O-O 19. h5 Qb7 20. hxg6 fxg6 21. f5 Bg5 22. Qe2 {Laine,J (2223)-Caporali,D (2124) ICCF 2014 1/2-1/2 (52)}) (10... g6 11. Kb1 (11. Bg2 Bg7 12. a3 Rb8 13. Kb1 a5 14. Qe3 b4 15. axb4 axb4 16. Ne2 c5 17. Nd2 Ra8 18. e5 d5 19. f4 Qa5 20. c4 bxc3 21. Qxc3 Qa7 22. dxc5 Nxc5 {Szaro,M-Pérez López,A (2082) ICCF 2015 0-1 (38)}) 11... Bg7 12. Bg2 Bb7 13. d5 Nb6 14. Nd4 exd5 15. exd5 O-O 16. g5 h5 {0-1 (16) Galué,M (2119)-Röhl Montes,J (2331) ICCF 2016}) 11. Bh3 (11. Kb1 Qc7 12. Rg1 Bb7 13. d5 O-O-O 14. g5 Kb8 15. gxh6 Rxh6 16. dxe6 fxe6 17. Ng5 Nb6 18. Qe3 b4 19. Ne2 d5 20. Nf4 Bc8 21. exd5 e5 {González,M (2182)-Pascoal,J (2170) ICCF 2016 1/2-1/2 (27)}) (11. Bg2 Bb7 12. d5 e5 13. g5 Nb6 14. Rdg1 Bc8 15. Bf1 Kd7 16. Bh3+ Kc7 17. Bxc8 Rxc8 18. h5 Kb7 19. Kb1 Be7 20. gxh6 gxh6 21. Qe2 Qd7 22. Nd1 a5 {Lelgemann,L (2183)-Just,J (2208) ICCF 2016 0-1 (60)}) 11... Qa5 (11... cxd4 12. Nxd4 b4 13. Nce2 Nc5 14. Bg2 Qb6 15. f4 Bb7 16. Ng3 a5 17. e5 dxe5 18. fxe5 Be7 19. Nh5 O-O 20. g5 b3 21. Nxb3 Nxb3+ 22. axb3 a4 23. Bxb7 {Pritchard,O (2140)-Egner,M (2159) ICCF 2016 0-1 (36)}) 12. Kb1 b4 (12... cxd4 13. Nxd4 Bb7 14. g5 b4 15. Nce2 Bxe4 16. g6 Bxg6 17. Nf4 Bh7 18. Nfxe6 fxe6 19. Nxe6 Bg8 20. Rhe1 Ne5 21. f4 Bxe6 22. Bxe6 {1-0 (22) Marten,G-Walsh,P (1674) ICCF 2016}) (12... Nb6 13. dxc5 Nc4 14. Qd3 Qb4 15. b3 Na3+ 16. Kb2 Qxc5 17. g5 hxg5 18. hxg5 Bb7 19. g6 f5 20. Ng5 b4 21. Na4 Qe5+ 22. c3 Nb5 {Driessen,B (1956)-Taylor,B (1946) ICCF 2019 0-1 (54)}) 13. Ne2 c4 14. g5 c3 15. bxc3 (15. Qd3 Be7 (15... Bb7 16. Nf4 g6 17. d5 e5 18. Bxd7+ Kxd7 19. Ng2 cxb2 20. h5 Be7 21. hxg6 fxg6 22. gxh6 Qc5 23. h7 a5 24. Rdg1 Ba6 25. Qe3 Qxe3 26. Nxe3 Be2 27. Nh4 {Poelvoorde,H-Steyn,G ICCF 2020 1-0 (52)}) 16. g6 f5 17. exf5 Nb6 18. f6 Bxf6 19. Nf4 cxb2 20. Nxe6 Na4 21. Qb3 Nc3+ 22. Kxb2 Nxd1+ 23. Rxd1 Qa3+ 24. Qxa3 bxa3+ 25. Kc1 Bxe6 26. Bxe6 Ke7 {Lara Ruiz,J (2291)-Brotherton,T (2100) ICCF 2017 1/2-1/2 (27)}) 15... bxc3 16. Qxc3 Rb8+ 17. Ka1 Qxc3+ 18. Nxc3 g6 19. Bg2 Bg7 20. Rb1 Rxb1+ {1/2-1/2 (20) Iacomi,S (2307)-Galiano Martínez,A (2326) ICCF 2019 1 d4 Nf6 2 Nf3 e6: Torre,-London and Colle Systems}) 5. c4 (5. e4 d5 6. Nbd2 Be7 7. c3 c6 8. Qc2 Nd7 9. a4 Nf8 10. Bd3 Qc7 11. Nf1 Bd7 12. Ng3 Ng6 13. Ne2 O-O-O 14. exd5 f5 15. dxe6 fxe6 16. O-O-O Rdf8 {Dixon,R (1945)-Smith,A (1559) ICCF 2020 1/2-1/2 (27)}) 5... b6 6. Nc3 Bb7 7. e3 Nc6 8. Be2 Qe7 9. O-O Rg8 10. d5 Ne5 11. Nb5 d6 12. Qa4 Kd8 13. Rad1 a6 14. Nbd4 Qd7 15. Qb3 Nxf3+ { Manarin,F (1958)-Frydendal,O (1826) ICCF 2011 1-0 (25)}) 4... c5 (4... d6 5. e3 (5. Nbd2 g5 (5... Nbd7 6. e4 g5 7. Bg3 Nh5 8. Be2 Bg7 9. c3 Qe7 10. Qc2 a6 11. O-O-O b6 12. Rhe1 Nxg3 13. hxg3 Bb7 14. Nc4 O-O-O 15. Ne3 Nf6 16. d5 Nd7 17. Nd4 {Robertson,J (1902)-Murray,J (1959) ICCF 2011 0-1}) 6. Bg3 Nh5 7. e4 (7. e3 Bg7 8. c3 (8. Bd3 Nc6 (8... Nxg3 9. hxg3 g4 10. Nh4 h5 11. c3 Bd7 12. Qb3 Bc6 13. O-O-O Qd7 14. e4 b6 15. Qa3 Bb5 16. c4 Ba4 17. b3 Bc6 18. d5 Bb7 19. dxe6 Qxe6 20. Nf5 {Casella,S (1657)-Schilleci,C ICCF 2019 0-1}) 9. c3 Qe7 10. Qe2 Bd7 11. b4 Nxg3 12. hxg3 a6 13. O-O O-O 14. g4 f5 15. gxf5 exf5 16. a4 Rae8 17. b5 axb5 18. axb5 Nd8 19. Qd1 h5 {Sepers,G (1984)-Hamilton,D (2016) ICCF 2015 1/ 2-1/2 (29)}) 8... Nd7 (8... Bd7 9. Qb3 Nc6 10. Be2 O-O 11. O-O Qe7 12. Ne1 Na5 13. Qc2 Nxg3 14. hxg3 c5 15. b4 cxb4 16. cxb4 Rac8 17. Qb1 Nc6 18. Qb3 d5 19. b5 Na5 20. Qa4 {Jacquin,R (2495)-Santos,M (2420) ICCF 2007 1-0 (44)}) (8... O-O 9. Be2 f5 10. a4 Nc6 11. a5 Kh8 12. O-O Qe8 13. Ne1 Nf6 14. Nd3 Bd7 15. f3 Qg6 16. Re1 {1/2-1/2 (16) Meißner,R (2272)-Speisser,P (2256) ICCF 2021}) 9. Bd3 Qe7 10. O-O (10. Nf1 Ndf6 11. h3 Nxg3 12. Nxg3 Bd7 13. e4 O-O-O 14. Qc2 Kb8 15. a4 Rdg8 16. a5 h5 17. Qb3 g4 18. Ba6 b6 19. Nd2 gxh3 20. Rxh3 h4 21. Ne2 Qd8 { Savchur,F (2479)-Karacsony,E (2337) ICCF 2007 1/2-1/2 (32)}) (10. e4 O-O 11. Qc2 Rb8 12. O-O-O b5 13. h4 Nxg3 14. fxg3 g4 15. Nh2 h5 16. Nb3 c5 17. dxc5 dxc5 18. Be2 b4 19. c4 Nb6 20. Na1 Qc7 21. Qb3 Bd7 {Barbosa,L-Brooks,P ICCF 2020 0-1}) 10... O-O (10... Nxg3 11. hxg3 b6 12. a4 a5 13. b4 axb4 14. cxb4 O-O 15. b5 Bb7 16. Qc2 Rfc8 17. Rfc1 g4 18. Ne1 e5 19. dxe5 Bxe5 20. Rab1 Nc5 21. Bh7+ Kg7 22. Nd3 {Landero Luna,V (2373)-Reich,Y (2432) ICCF 2008 1/2-1/2 (44)}) 11. a4 f5 12. a5 Ndf6 13. a6 b6 14. e4 f4 15. e5 Nd5 16. Qe2 Rb8 17. Bh4 gxh4 18. Bg6 Nhf6 {Jacquin,R (2495)-Knoll,H (2628) ICCF 2007 1/2-1/2 (60)}) 7... Bg7 8. c3 Nd7 (8... O-O 9. Qc2 Nc6 10. Bd3 a5 11. O-O a4 12. Rae1 e5 13. dxe5 Nxe5 14. Be2 Nxg3 15. hxg3 g4 16. Nxe5 dxe5 17. Rd1 Qf6 18. Bb5 a3 19. b4 h5 20. Nb3 {Maslov,D-Zhorov,B (2249) ICCF 2020 1/2-1/2 (40)}) (8... Nxg3 9. hxg3 Nd7 10. Bd3 e5 11. Qe2 exd4 12. Nxd4 Ne5 13. O-O-O Nxd3+ 14. Qxd3 Qf6 15. f3 Bd7 16. Kb1 O-O-O 17. g4 Kb8 18. Nf1 Qg6 19. Ng3 Be5 20. Ndf5 {Selen,D (2210)-Selen,C ICCF 2007 1-0 (38)}) 9. Bd3 O-O 10. Qc2 (10. Qe2 f5 11. O-O-O Ndf6 12. Ne1 Qe8 13. f3 Bd7 14. Bc2 a5 15. Nd3 Nxg3 16. hxg3 b5 17. Rde1 Qc8 18. g4 b4 19. f4 bxc3 20. bxc3 fxe4 21. Nxe4 Qb7 {Powers Roibal,F-Perrin,R (2069) ICCF 2018 1-0 (38)}) (10. Qb3 Kh8 11. Qc2 g4 12. Ng1 f5 13. f3 fxe4 14. Bxe4 e5 15. Ne2 exd4 16. cxd4 Nxg3 17. hxg3 Nf6 18. Nf4 Nxe4 19. fxe4 Kh7 20. O-O-O Bxd4 21. Nc4 Bg7 {Bristol,M (2176)-Egan,M (2019) ICCF 2006 1/2-1/2 (37)}) 10... g4 11. Bh4 (11. Ng1 Nxg3 12. hxg3 c5 13. Ne2 Rb8 14. a4 a6 15. Nf1 b5 16. Qd2 e5 17. Ne3 Nf6 18. axb5 axb5 19. d5 Qc7 20. c4 b4 21. O-O Bd7 22. Nc1 h5 {Cvetnic,V (2316) -Magallanes,F (2503) ICCF 2012 1/2-1/2}) 11... Qe8 12. Ng1 Nf4 13. O-O-O e5 14. Ne2 Nxd3+ 15. Qxd3 exd4 16. cxd4 f5 {McCartney,P (1959)-Rogers,B (2050) ICCF 2019 0-1 (51)}) (5. c3 b6 6. Bxf6 Qxf6 7. e4 Qd8 8. Nbd2 Be7 9. d5 O-O 10. dxe6 fxe6 11. Bc4 d5 12. Bd3 Ba6 13. Bxa6 Nxa6 14. O-O Nc5 15. Qc2 dxe4 16. Nxe4 Qd3 {Klausen,T (2466)-Fichaud,A (2365) ICCF 2016 1/2-1/2}) (5. c4 g5 6. Bg3 Ne4 7. Nc3 Nxc3 8. bxc3 h5 (8... Bg7 9. e3 b6 10. Be2 Bb7 11. O-O Nd7 12. Nd2 O-O 13. f4 f5 14. Bf3 Bxf3 15. Qxf3 g4 16. Qc6 Qe8 17. Qxc7 Nc5 18. Bh4 Rf7 19. Qxd6 Rc8 20. dxc5 {Elwood,D (1763)-James,A ICCF 2016 0-1 (51)}) 9. h3 b6 10. e3 Nd7 11. Bd3 Ba6 12. Qa4 Bb7 13. Qc2 f5 14. O-O g4 15. hxg4 hxg4 16. Bh4 Be7 { Richards,M (1436)-Walsh,P (1548) ICCF 2017 0-1}) (5. h3 Nbd7 6. Nbd2 Be7 7. e3 O-O 8. Bd3 b6 9. Bg3 Bb7 10. O-O Re8 11. e4 e5 12. c3 exd4 13. cxd4 d5 14. Re1 dxe4 15. Nxe4 Nxe4 16. Bxe4 Bxe4 {Rinaldi,C (2118)-Fernández,J (2397) ICCF 2016 1/2-1/2 (49)}) 5... Nbd7 (5... g5 6. Bg3 Nh5 (6... Bg7 7. Nc3 Qe7 8. Bd3 Nc6 9. Bb5 Bd7 10. Qe2 a6 11. Bc4 h5 12. h3 b5 13. Bd3 h4 14. Bh2 g4 15. hxg4 Nxg4 16. Bf4 f5 17. Bg5 Bf6 18. Bxf6 {Torgersen,T (2064)-Frydendal,O (1929) ICCF 2006 1-0}) 7. Bd3 (7. Nfd2 Nxg3 8. hxg3 Bg7 9. Nc3 Nd7 10. g4 O-O 11. Nb3 Nf6 12. Bd3 e5 13. Bf5 exd4 14. Nxd4 c5 15. Nb3 Re8 16. Qf3 Bxf5 17. gxf5 b5 18. Rd1 b4 {Vasile,C (2167)-Krüger,H (2336) ICCF 2013 0-1 (35)}) 7... Nxg3 8. hxg3 Bg7 9. c3 Nd7 10. Nbd2 Qe7 11. Qe2 Nb6 12. e4 Bd7 13. Nh2 h5 14. Nhf1 h4 15. gxh4 gxh4 16. Ne3 O-O-O 17. O-O-O {Landero Luna,V (2272)-Gutiérrez Dopino, J (2255) ICCF 2018 1/2-1/2 (49)}) 6. c4 (6. Bd3 g5 7. Bg3 Nh5 8. c3 (8. O-O Bg7 9. c4 O-O 10. Nc3 f5 11. h3 Nxg3 12. fxg3 e5 {0-1 (12) Cali,M-Fraser,B ICCF 2015}) 8... b6 9. Be4 d5 10. Bd3 g4 11. Bh4 Be7 12. Bxe7 Qxe7 13. Nfd2 Nhf6 14. Na3 Bb7 15. Nb5 Kd8 16. a4 a6 17. Na3 Rg8 {Lukesova,M (2400)-Andersen,J (2312) ICCF 2010 1/2-1/2 (55)}) (6. Nc3 Be7 7. e4 O-O 8. Be2 b6 9. e5 Nd5 10. Bxe7 Nxe7 11. Qd2 Bb7 12. O-O-O Nd5 13. Rhg1 dxe5 14. dxe5 Qe7 15. g4 f6 16. exf6 Qxf6 17. Nxd5 Bxd5 {Lew,T (2373)-Borisovs,L (2270) ICCF 2007 0-1 (36)}) 6... g5 (6... b6 7. Nc3 Bb7 8. Qc2 Be7 9. Be2 c5 10. O-O O-O 11. Rad1 (11. Rfd1 a6 12. Rac1 Rc8 13. dxc5 bxc5 14. Rd2 Qc7 15. h3 Rfd8 16. Bg3 Nb8 17. a3 Nc6 {Owens,J (1410)-Gromotka,H (2268) ICCF 2014 1/2-1/2 (71)}) 11... a6 12. dxc5 bxc5 13. Bg3 Qc7 14. h3 Rfd8 15. Rd2 Nf8 16. Rfd1 Rab8 17. Ne1 Qb6 18. f3 {Muukkonen,K (2373)-Silva,M (2319) ICCF 2009 1/2-1/2 (47)}) 7. Bg3 Nh5 8. Nc3 Bg7 9. Be2 (9. Qc2 Qe7 10. O-O-O (10. Bd3 a6 11. O-O-O Nxg3 12. hxg3 Nf6 13. Nd2 Bd7 14. a4 O-O-O 15. b4 c5 16. b5 Ng4 17. Nb3 Kb8 18. Rhe1 h5 19. Rd2 f5 20. bxa6 bxa6 21. f3 Nh6 {Kain,T (2269)-Ferreira,J (2188) ICCF 2011 1-0 (29)}) 10... Ndf6 { Toro Solís de Ovando,G (2579)-Hall,R (2619) ICCF 2009}) 9... Qe7 10. Qc2 (10. Nd2 Nxg3 11. hxg3 Nf6 (11... c5 12. Nb3 O-O 13. dxc5 dxc5 14. Qc2 Rd8 15. O-O-O b6 16. f4 Bb7 17. Bf3 Nf8 18. Nd2 Ng6 19. Kb1 Bxf3 20. gxf3 Rd7 21. fxg5 hxg5 22. Nde4 Rxd1+ {1/2-1/2 (22) Witzschel,P (2372)-Leemans,R (2353) ICCF 2009}) 12. Qb3 O-O 13. O-O-O e5 14. dxe5 dxe5 15. Nde4 Nxe4 16. Nxe4 b6 17. g4 a5 18. Qc2 Be6 19. Ng3 Rfd8 20. Qe4 b5 21. cxb5 Bxa2 {Kolek,P (2236)-Caporali,D (2124) ICCF 2014 1-0 (65)}) 10... Ndf6 11. O-O Bd7 12. Rfd1 O-O 13. d5 Nxg3 14. hxg3 c5 15. dxe6 Bxe6 16. Rd2 {Popov,A (2160)-Haag,R (2005) ICCF 2011 1/2-1/2 (64)}) (4... b6 5. e3 (5. a4 c5 6. e3 Bb7 7. Bg3 Nc6 8. c3 cxd4 9. exd4 Ne4 10. Bd3 Nxg3 11. hxg3 Qc7 12. Qe2 Be7 13. Nbd2 Rc8 14. Rd1 O-O 15. Kf1 d5 16. Re1 Rfe8 {Nozicka,V (1978)-Robertshaw,A (1972) ICCF 2015 1-0 (51)}) (5. Nbd2 Bb7 6. e4 ( 6. h3 c5 7. e3 Nc6 8. c3 Be7 9. Bd3 O-O 10. O-O d5 11. Re1 Rc8 12. Qe2 Ne4 13. Bxe7 Nxe7 14. a4 Qc7 15. Bc2 a5 16. Rac1 f6 17. Red1 c4 {Zelovic,V (2391)-Bush, F (2339) ICCF 2007 1/2-1/2 (46)}) 6... g5 7. Bg3 Bxe4 8. Nxe4 Nxe4 9. Bd3 Nxg3 10. hxg3 Bg7 11. Qe2 O-O 12. Qe4 {1-0 (12) Metelmann,K (2296)-Bredenhof,B (2101) ICCF 2007}) (5. e4 g5 6. Nxg5 hxg5 7. Bxg5 Be7 8. Bxf6 Bxf6 9. e5 Bg5 10. Be2 Bb7 11. Bf3 Nc6 12. c3 d6 13. exd6 Qxd6 14. h3 O-O-O 15. Na3 e5 16. Nb5 Qf6 {Plums,U (2089)-Sage,F (2353) ICCF 2010 0-1 (27)}) 5... Bb7 6. Nbd2 (6. Bd3 g5 7. Bg3 g4 8. Nfd2 (8. Ne5 h5 9. Rg1 d6 10. Nc4 Qd7 11. c3 Nc6 12. Nbd2 h4 13. Bf4 Rg8 14. e4 O-O-O 15. Qc2 e5 16. dxe5 Nxe5 17. O-O-O Nxd3+ 18. Qxd3 d5 19. exd5 Nxd5 {Frágola,H (1810)-Pisani,C (2099) ICCF 2012 0-1 (35)}) (8. Nh4 Rg8 9. Nc3 Be7 10. h3 Nh5 11. hxg4 Nxg3 12. fxg3 Bd6 13. Nf3 Bxg3+ 14. Kd2 c5 15. Rxh6 cxd4 16. Nxd4 Qg5 17. Rh7 Be5 18. Rh5 Qg7 19. Qe2 Bxd4 {Berthelsen,R (2126)-Haug,K (2195) ICCF 2005 1/2-1/2 (46)}) 8... Bxg2 9. Rg1 Bb7 10. f3 h5 11. Nc3 a6 12. Bh4 Be7 13. Qe2 Ne4 14. Bxe7 Nxc3 15. Bxd8 Nxe2 16. Kxe2 Kxd8 17. Kf2 Ke7 {Arteaga Hernández,L (1877)-Ruiz-Jarabo,F (2253) ICCF 2014 0-1 (38)}) (6. Bb5 g5 7. Bg3 g4 8. Ne5 h5 9. Nc3 Bxg2 10. Rg1 Bb7 11. Qd2 a6 12. Ba4 b5 13. Bb3 d6 14. Nd3 c5 {0-1 (14) Silva,N-Pinho,M (1962) ICCF 2012}) 6... Be7 (6... d6 7. a4 (7. Bd3 g5 8. Bg3 Nh5 (8... g4 9. Nh4 Rg8 10. f3 Be7 11. Qe2 Nh5 12. fxg4 Bxh4 13. gxh5 Bxg3+ 14. hxg3 Rxg3 15. Ne4 Rg7 16. Qf3 Bxe4 17. Qxe4 d5 18. Qf3 Nd7 19. c4 Qf6 20. Be2 {Landero Luna,V (2305)-Feldborg,B (2328) ICCF 2020 1/2-1/2 (50)}) 9. O-O Bg7 10. c3 Nd7 11. e4 Qe7 12. Qe2 O-O 13. Ba6 Bxa6 14. Qxa6 Nxg3 15. fxg3 c5 16. Nb3 cxd4 17. cxd4 f5 18. exf5 Rxf5 {García Gil,J (2340)-Schein,K (2285) ICCF 2006 1-0 (30)}) (7. c3 Nbd7 8. Bd3 g5 9. Bg3 Nh5 10. Be4 Bxe4 11. Nxe4 Bg7 12. Nfd2 Nxg3 13. Nxg3 Nf6 14. Nh5 Nxh5 15. Qxh5 c5 16. h4 cxd4 17. exd4 Qf6 18. a4 Ke7 {Lipecki,A (2105)-Koskinen,P (2202) ICCF 2013 1-0 (44)}) 7... g5 8. Bg3 Nh5 9. e4 Bg7 10. e5 Nxg3 11. hxg3 dxe5 12. dxe5 g4 13. Nh4 Qg5 14. f4 gxf3 15. Ndxf3 Qxg3+ 16. Kd2 Qf4+ 17. Kc3 Nc6 { 0-1 (17) Bongo Akanga Ndjila,B (1820)-Dirgantara,D (1940) ICCF 2021}) 7. Bd3 ( 7. c3 d6 8. h3 Nbd7 9. Bg3 O-O 10. Bd3 d5 11. O-O Ne4 12. Bf4 Bd6 13. Qc2 f5 14. Rfd1 Bxf4 15. exf4 Rc8 16. a4 c5 17. Bb5 Nb8 18. a5 Bc6 {Kratochvíl,J (2017)-Florea,M (2363) ICCF 2008 1/2-1/2 (34)}) (7. h3 c5 8. c3 O-O 9. Bd3 d6 10. O-O Nbd7 11. Bg3 Rc8 12. e4 cxd4 13. cxd4 e5 14. Re1 exd4 15. Nxd4 Nc5 16. Bc2 d5 17. Nf5 dxe4 18. Nc4 Ba6 {Giacchetti,C (2212)-Murlasits,M (2234) ICCF 2007 1-0 (47)}) 7... c5 (7... g5 8. Bg3 g4 9. Ne5 (9. Nh4 Rg8 10. O-O Nh5 11. Bh7 Rg7 12. Be5 Bf6 13. g3 Bxe5 14. dxe5 Rxh7 15. Qxg4 Qg5 16. Qd4 Nc6 17. Qc3 Qxe5 18. Qd3 Rg7 19. c3 Nxg3 20. fxg3 Rxg3+ {Overturf,S-Bennett,M ICCF 2014 0-1 }) 9... h5 10. f3 (10. e4 d6 11. Nec4 d5 12. exd5 Qxd5 13. Qe2 Qxg2 14. O-O-O Qd5 15. Bxc7 Nc6 16. Be5 O-O-O 17. c3 b5 18. Bxf6 Bxf6 19. Be4 Qd7 20. Ne3 Kb8 21. Qxb5 Nxd4 {Arcenegui Rodrigo,J (2249)-Cañizares Cuadra,P (2234) ICCF 2008 1/2-1/2 (66)}) (10. O-O d6 11. Nec4 Nc6 12. c3 h4 13. Bf4 Qd7 14. Bg5 Nh5 15. Bxe7 Nxe7 16. a4 f5 17. Be2 Nf6 18. f3 gxf3 19. Bxf3 O-O-O 20. Na3 Rdg8 21. a5 b5 {Zelovic,V (2389)-Manole,G (2306) ICCF 2006 1/2-1/2 (54)}) 10... d6 11. Nec4 h4 12. Bf2 gxf3 13. Nxf3 Ne4 14. Qe2 f5 15. O-O-O Nd7 16. g4 fxg4 17. Nfe5 Bg5 18. Bxe4 Bxe4 19. Qxg4 {Williams,S (2277)-Sherwood,H (2337) ICCF 2019 1/2-1/2 (33)}) (7... d6 8. Qe2 Nbd7 9. c3 O-O 10. O-O e5 11. Bxf6 Bxf6 12. Ba6 Bc6 13. e4 exd4 14. Nxd4 Bxd4 15. cxd4 Re8 16. Rac1 Bxe4 17. Nxe4 d5 18. f3 dxe4 19. fxe4 {Ormsby,A (1737)-Cardenas,I ICCF 2009 1/2-1/2 (28)}) 8. c3 (8. O-O Nc6 9. c3 d6 (9... g5 10. Bg3 d6 11. dxc5 dxc5 12. Bb5 a6 13. Bxc6+ Bxc6 14. Qc2 Qd5 15. c4 Qf5 16. Qc3 O-O-O 17. Ne5 Be8 18. Rfd1 Nh5 19. Nf1 f6 20. Rxd8+ Bxd8 21. Nd3 {Romualdi,R-Stibal,G (2222) ICCF 2006 0-1 (34)}) (9... d5 10. Ne5 Nxe5 11. dxe5 Nd7 12. Bxe7 Qxe7 13. f4 O-O-O 14. a4 a5 15. Bb5 g5 16. b4 axb4 17. cxb4 gxf4 18. exf4 cxb4 19. Rb1 Kb8 20. Nf3 Nc5 21. Qd4 {Bröker,C (2422)-LeBled,P (2395) ICCF 2007 1/2-1/2 (41)}) 10. Qe2 Rc8 11. Rac1 O-O 12. Rfd1 Nh5 13. Bxe7 Qxe7 14. Bb1 Rfd8 15. a3 Nf6 16. b4 e5 17. bxc5 dxc5 18. Bf5 Rc7 19. dxe5 Nxe5 {Bratholm,P (1945)-Carrettoni,A (2179) ICCF 2010 1/2-1/2 (60)}) 8... cxd4 (8... Nc6 9. a3 O-O 10. O-O d6 (10... d5 11. b4 (11. Qe2 Ne4 (11... Re8 12. b4 Ne4 13. Bxe7 Nxe7 14. Rfc1 cxd4 15. cxd4 Rc8 16. Qd1 f6 17. Rxc8 Qxc8 18. Rc1 Qd7 19. Nb1 Rc8 20. Nfd2 Nd6 21. Nc3 Kh8 22. h3 e5 23. Nb3 {Landero Luna,V (2361) -Lecha González,J (2213) ICCF 2012 1-0 (74)}) (11... Nd7 12. Bg3 c4 13. Bc2 f5 14. h3 Qe8 15. Rfe1 Rc8 16. Ne5 Ncxe5 17. Bxe5 Nxe5 18. dxe5 b5 19. Nf3 Bc6 20. Nd4 Bc5 21. f4 g6 22. g4 Qf7 23. Kh1 {Popov,A (2324)-Lyukmanov,V (2411) ICCF 2010 1-0 (55)}) (11... Rc8 12. Rad1 Ne4 13. Bg3 Nxg3 14. hxg3 Qd7 15. Bb1 f5 16. g4 Rcd8 17. Ne5 Nxe5 18. dxe5 Qa4 19. gxf5 exf5 20. f4 d4 21. b3 Qc6 22. cxd4 cxd4 23. exd4 {Muukkonen,K (2373)-Secchi,D (2292) ICCF 2009 1/2-1/2 (30)}) 12. Bxe7 Nxe7 13. Rac1 Rc8 14. Rfd1 Ng6 15. Bb1 f5 16. Ne5 Nxe5 17. dxe5 Qc7 18. f4 g5 19. Bxe4 fxe4 20. Qg4 Rce8 21. Nf1 Qg7 22. Ng3 gxf4 {Wallinger,M (2364)-Plas,R (2265) ICCF 2015 0-1 (31)}) (11. Bg3 Nh5 12. Be5 f6 13. Bf4 Qe8 14. Qc2 Nxf4 15. exf4 Bd6 16. Rfe1 Bxf4 17. Bh7+ Kh8 18. Nh4 e5 19. Ndf3 e4 20. Bg6 Qd8 21. Bxe4 dxe4 22. Qxe4 {1/2-1/2 (22) Pino Muñoz,F (2262)-Salzmann,S (2231) ICCF 2012}) (11. Ne5 Nxe5 12. dxe5 Ne4 13. Bxe7 Qxe7 14. f4 Rad8 15. Qe2 Nxd2 16. Qxd2 f6 17. exf6 Qxf6 18. Rf2 e5 19. fxe5 Qxf2+ 20. Qxf2 Rxf2 21. Kxf2 Re8 22. a4 Rxe5 {García Camejo,G (2214)-Cremerius,A (2229) ICCF 2020 1/2-1/2 (27)}) 11... Ne4 12. Bxe7 Nxe7 13. Rc1 (13. Qc2 cxd4 14. cxd4 Rc8 15. Qb1 Nd6 16. b5 f6 17. Qb4 Qd7 18. a4 Rc7 19. Rfc1 Rfc8 20. Rxc7 Rxc7 21. a5 Nef5 22. Qa4 Rc3 23. Ne1 Ne4 24. Qb4 Qc7 {Savchur,F (2499)-Rodríguez Landa,M (2457) ICCF 2013 1-0 (54)}) 13... Rc8 14. Re1 cxd4 15. cxd4 Qd7 16. Ne5 Rxc1 17. Qxc1 Qd6 18. Qb2 Rc8 19. Rc1 Rxc1+ 20. Qxc1 f6 21. Nef3 Qc6 22. Qxc6 {Marjamäki,M (2159)-Tikas,V (2306) ICCF 2006 1/2-1/2 (28)}) 11. Qe2 Qc7 (11... Nh5 12. Bxe7 Nxe7 13. Rfd1 Nf6 14. e4 Rc8 15. Rac1 cxd4 16. cxd4 Rxc1 17. Rxc1 Qb8 18. h3 Ng6 19. g3 Ne7 20. Qd1 Rd8 21. b4 b5 22. Qb3 a6 23. Qb1 {Sladek,V (2029) -Douziech,R (2270) ICCF 2013 1/2-1/2 (42)}) 12. Rac1 Nh5 13. b4 Bxh4 14. Nxh4 Nf6 15. f4 Rac8 16. g4 Nd5 17. c4 Nde7 18. b5 Na5 19. g5 hxg5 20. Qh5 {Jacquin, R (2495)-Santana Peñate,G (2600) ICCF 2007 1-0 (38)}) (8... O-O 9. O-O (9. Qe2 d5 10. Ne5 Nc6 11. Bxf6 (11. f4 a6 12. O-O Qc7 13. Bxf6 Bxf6 14. Qh5 c4 15. Bc2 Nxe5 16. fxe5 Bg5 17. Rf3 Qe7 18. Raf1 Rad8 19. g3 g6 20. Qh3 Kg7 21. Qg2 Qe8 22. h4 Be7 {Knöppel,B (2030)-Duffy,A (1983) ICCF 2006 1-0 (47)}) 11... Bxf6 12. Nxc6 (12. f4 Nxe5 (12... a5 13. Ndf3 Nxe5 14. fxe5 Be7 15. h4 Qc8 16. g4 Ba6 17. g5 Bxd3 18. Qxd3 h5 19. O-O Qe8 20. Rf2 b5 21. Raf1 b4 22. Ne1 Rb8 23. Ng2 g6 24. Nf4 {Landero Luna,V (2278)-Cañizares Cuadra,P (2292) ICCF 2017 1-0 (81)}) 13. fxe5 Bh4+ 14. g3 Be7 15. h4 c4 16. Bc2 b5 17. O-O b4 18. cxb4 Bc6 19. Rf2 Rb8 20. Raf1 Rxb4 21. Nf3 Rb7 22. Bb1 Be8 23. Qc2 g6 {Landero Luna,V (2316)-Borisovs,L (2331) ICCF 2021 1/2-1/2 (29)}) 12... Bxc6 13. f4 Rb8 14. O-O a5 15. Rae1 b5 16. Nf3 b4 17. Ne5 Be8 18. Rb1 Be7 19. e4 cxd4 20. cxd4 Qb6 { Schiendorfer,R (2360)-Vlasveld,W (2497) ICCF 2010 1/2-1/2 (37)}) 9... d6 (9... Nc6 10. Nc4 (10. Qe2 d5 (10... cxd4 11. Nxd4 (11. Bxf6 Bxf6 12. exd4 Re8 13. Rfe1 Qc7 14. Ne4 Be7 15. Ng3 Qf4 16. Rad1 g6 17. Qc2 Qf6 18. Ne5 Red8 19. Re3 Nxe5 20. dxe5 Qg5 21. Be4 Bc6 22. Ne2 Rac8 {Landero Luna,V (2341)-Schreiner,R (2210) ICCF 2009 1-0 (51)}) 11... d5 12. Nxc6 Bxc6 13. Rfd1 Ne4 14. Bxe7 Qxe7 15. Nxe4 dxe4 16. Bc2 Rfd8 17. Rxd8+ Rxd8 18. Rd1 Rxd1+ 19. Qxd1 f5 20. Bb3 Kf7 21. Qd4 Qc5 22. Qxc5 {Wallinger,M (2364)-Frica,S (2191) ICCF 2015 1/2-1/2 (30)} ) (10... Rc8 11. e4 cxd4 12. Nxd4 Nxd4 13. cxd4 Nd5 14. Bxe7 Nxe7 15. f4 Nc6 16. Nb3 Nb4 17. Qd2 Nxd3 18. Qxd3 f5 19. e5 d6 20. Qe3 Qd7 21. Rac1 dxe5 22. dxe5 {Taylor,B (2009)-Thompson,E (1896) ICCF 2011 0-1 (31)}) 11. a4 Nd7 12. Bg3 Bf6 13. Rfe1 Re8 14. Rad1 g6 15. dxc5 Nxc5 16. e4 Nxa4 17. Nb3 a6 18. h4 h5 19. e5 Bg7 20. Ng5 Qc7 21. Bb1 Nc5 {Muukkonen,K (2477)-Guðmundsson,E (2475) ICCF 2017 1/2-1/2 (48)}) (10. e4 d6 11. Re1 (11. h3 Rc8 12. Re1 cxd4 13. cxd4 Nh5 14. Bxe7 Qxe7 15. g3 Nf6 16. a3 Rc7 17. Qe2 Rd8 18. Rad1 Qd7 19. Bb1 e5 20. Kh2 exd4 21. Nb3 Re8 22. Nfxd4 Nxd4 {Volkov,A (1831)-Packroff,H (2196) ICCF 2018 1/ 2-1/2 (35)}) 11... cxd4 12. Nxd4 a6 13. Nxc6 Bxc6 14. Nb3 Nd7 15. Bg3 Qc7 16. Nd4 Bb7 17. a4 Rfe8 18. Bb1 Rad8 19. f4 Bf8 20. Bh4 Rc8 21. Qg4 Kh8 {Powers Roibal,F (2395)-Bell,A (2409) ICCF 2018 1/2-1/2 (41)}) 10... d5 11. Nce5 Nd7 12. Bg3 Ndxe5 13. Nxe5 Nxe5 14. Bxe5 Bd6 (14... f6 15. Bf4 f5 16. Qf3 Bc6 17. h3 Qe8 18. b3 Bb5 19. c4 dxc4 20. bxc4 Ba6 21. Be5 Rd8 22. a4 cxd4 23. exd4 Bd6 24. Qg3 Bxe5 25. Qxe5 Qc6 26. Rfe1 {Tosi,F (2218)-Korman,J (1856) ICCF 2011 1-0 (74)}) 15. f4 c4 16. Bc2 f5 17. Qh5 Bxe5 18. fxe5 Kh7 19. Qh3 g6 20. Kh1 Qg5 21. Rf3 {Vasile,C (2172)-Evstigneev,S (2316) ICCF 2013 1/2-1/2 (25)}) 10. Re1 (10. Qe2 Nbd7 11. h3 Re8 (11... Nh5 12. Bxe7 Qxe7 13. a4 a6 14. Rfd1 Rfc8 15. Rac1 f5 16. Bb1 Nhf6 17. e4 fxe4 18. Nxe4 c4 19. Re1 Nd5 20. g3 { Staniszewski,J (2420)-Trusewicz,J (2489) ICCF 2008 1/2-1/2 (52)}) 12. Rfe1 Qc7 13. e4 cxd4 14. cxd4 Rac8 15. Bg3 Qb8 16. a3 Red8 17. a4 Qa8 18. a5 bxa5 19. Rxa5 d5 20. exd5 Nxd5 21. Rea1 a6 {Manaenkov,V-Kleiser,G (2217) ICCF 2009 1/ 2-1/2 (33)}) 10... Nbd7 (10... Nc6 11. Qe2 Nh5 12. Bxe7 Nxe7 13. g3 Qc7 14. e4 Nf6 15. e5 dxe5 16. dxe5 Nd7 17. Nh4 a6 18. a4 b5 19. axb5 axb5 20. Rxa8 Bxa8 21. f4 c4 {De Blois Figueredo,A (2104)-De Bari,V (2326) ICCF 2006 0-1 (39)}) 11. e4 Nh5 12. Bxe7 Qxe7 13. a4 a6 14. d5 Nf4 15. Bf1 exd5 16. exd5 Qd8 17. c4 Nf6 18. g3 Ng6 19. Bd3 Re8 20. Bxg6 {Powers Jr.,K (2387)-Enricci,J (2387) ICCF 2020 1/2-1/2 (28)}) (8... g5 9. Bg3 g4 10. Ne5 h5 (10... cxd4 11. exd4 h5 12. Nec4 d6 13. Ne3 h4 14. Bf4 Nbd7 15. Nxg4 Bxg2 16. Nxf6+ Nxf6 17. Bb5+ Kf8 18. Rg1 h3 19. Bf1 Nd5 20. Bxg2 hxg2 21. Bg3 Rc8 22. Rxg2 {Reyes Maldonado,C (2349) -Silva,F (2311) ICCF 2016 1-0 (70)}) 11. dxc5 (11. e4 d6 12. Nec4 cxd4 13. h3 dxc3 14. bxc3 d5 15. Ne5 Nbd7 16. hxg4 dxe4 17. Bb5 a6 18. Nc6 Qc8 19. Nxe7 Kxe7 20. Bxd7 Nxd7 21. Bh4+ Ke8 22. Rh3 hxg4 {Jacquin,R (2495)-Cerqueira Filho, R (2428) ICCF 2007 1/2-1/2 (47)}) (11. f3 d6 12. Bb5+ Kf8 13. Nd3 a6 14. Ba4 c4 15. Nf2 h4 16. Bf4 Nd5 17. Qe2 Qc7 18. Nxg4 b5 19. Bc2 f5 20. Nf2 e5 21. Nh3 exf4 22. e4 Nb6 {Campos Parejo,A (1938)-Shitrit,K (2154) ICCF 2008 1-0 (37)}) 11... Bxg2 (11... Bxc5 12. Nec4 (12. O-O h4 13. Bf4 Rg8 14. Nb3 Bf8 15. e4 Nxe4 16. Re1 Nf6 17. Nd4 Bc5 18. Nc4 g3 19. hxg3 hxg3 20. Bxg3 Rxg3 21. fxg3 Qc7 { 0-1 (21) Savchur,F (2577)-Söderberg,P (2499) ICCF 2005}) 12... Bxg2 13. Rg1 Bc6 14. Nd6+ Ke7 15. N2e4 Bxe4 16. Bxe4 Nxe4 17. Nxe4 Ke8 18. Qa4 Nc6 19. O-O-O Be7 20. Bd6 f5 21. Bxe7 Qxe7 22. Nd6+ Kf8 23. h3 {Jacquin,R (2483)-Robledo,N (2295) ICCF 2006 1-0 (33)}) 12. Rg1 Bb7 13. Qa4 (13. Nec4 Bxc5 (13... bxc5 14. Nd6+ Bxd6 15. Bxd6 Nc6 16. Qa4 Ne7 17. Qf4 {Azmitia Pardo,L-Sladek,V (2105) ICCF 2006 1-0 (33)}) 14. Nb3 Be7 15. Nd6+ Bxd6 16. Bxd6 Nc6 17. Qe2 a5 18. e4 a4 19. Nd2 a3 20. b4 Ne7 21. Qe3 Nc8 22. Bf4 Rg8 23. Bg3 Rg6 24. O-O-O Na7 { Mut Company,G-Andersen,J (2284) ICCF 2010 1-0 (35)}) 13... bxc5 14. O-O-O Nc6 15. Ndc4 Nxe5 16. Nxe5 Kf8 17. Bc2 d6 18. Nc6 Bxc6 19. Qxc6 d5 20. Be5 { Baklanov,V (2475)-Romanov,S (2535) ICCF 2009 1/2-1/2 (49)}) 9. cxd4 O-O 10. O-O Nc6 11. a3 d6 12. Rc1 Qd7 13. Bxf6 Bxf6 14. Ne4 Be7 15. Nc3 d5 16. b4 {Markic, V (2115)-Kovac,S (2141) ICCF 2006 1/2-1/2}) (4... g5 5. Bg3 Bb4+ (5... Ne4 6. Nbd2 Nxg3 7. hxg3 Bg7 8. c3 Nc6 9. e4 d6 10. Nc4 g4 11. Nfd2 Qg5 12. Qb3 a6 13. Be2 h5 14. O-O-O b5 15. Ne3 Ne7 16. Qc2 Bb7 17. Kb1 {Bares,J (2216)-Glembek,B (2219) ICCF 2010 1/2-1/2 (61)}) 6. Nbd2 d6 7. a3 Ba5 8. b4 Bb6 9. a4 c6 10. a5 Bc7 11. h3 Qe7 12. e4 Bd7 13. Bd3 Nh5 14. Bh2 Nf4 15. Bxf4 gxf4 16. Rb1 { Johnson,V-Duncovich,M (1728) ICCF 2010 0-1 (40)}) (4... Be7 5. Nc3 d5 (5... O-O 6. e4 d5 7. e5 Nfd7 8. Bxe7 Qxe7 9. Bd3 c5 10. dxc5 Nc6 11. Qe2 Qxc5 12. O-O-O Rd8 13. Rhe1 a6 14. Kb1 Qa5 15. Qe3 Qc5 16. Qf4 Qb4 17. Qxb4 {Ryska,J (2174) -Glaser,K (2257) ICCF 2009 1/2-1/2 (40)}) 6. Ne5 O-O 7. f4 Ne4 8. Bxe7 Qxe7 9. Qd3 Nd6 10. g3 Nc6 11. a3 Nf5 12. Nxc6 bxc6 13. e4 dxe4 14. Nxe4 Rd8 15. c3 Bb7 16. Nc5 {Cunningham,J-Leite,H ICCF 2018 1-0 (42)}) (4... d5 5. Nbd2 c5 6. e3 Nbd7 7. c3 Bd6 8. Bd3 Qc7 9. O-O c4 10. Bc2 b5 11. e4 dxe4 12. Nxe4 Nxe4 13. Bxe4 Rb8 14. Qe2 a5 15. Rae1 O-O 16. Bb1 {Gongora-Montes,B (2114)-Saenz Ramos, J (2108) ICCF 2019 1-0 (25)}) 5. e3 (5. c3 Nc6 (5... cxd4 6. cxd4 Qa5+ (6... Qb6 7. Qc2 Nc6 8. e3 (8. Bxf6 gxf6 9. e3 Qa5+ 10. Nc3 Nb4 11. Qd2 Nd5 12. Nxd5 Qxd5 13. Be2 b6 14. O-O Rg8 15. Ne1 Qa5 16. Qd1 Bd6 17. f4 Bb7 18. Bf3 O-O-O 19. a3 Kb8 {Munro,P-Ryazantsev,O ICCF 2017 1/2-1/2 (55)}) 8... d5 (8... Qa5+ 9. Nbd2 d5 10. Bxf6 gxf6 11. Be2 Bd7 12. O-O Rc8 13. Nb3 Qa4 14. Qb1 b6 15. Rc1 Bd6 16. Nbd2 O-O 17. a3 Ne7 18. Qd3 Rfd8 19. Nf1 Rxc1 20. Rxc1 {Mair,E (2387) -Borisovs,L (2396) ICCF 2010 1/2-1/2}) 9. Nc3 Bd7 10. a3 Rc8 11. Bxf6 gxf6 12. Rc1 Rg8 13. Qd2 Bd6 14. g3 Ke7 15. Bg2 f5 16. O-O Na5 17. Rb1 Nc4 18. Qc2 { Humbert,P (1437)-Comien,R ICCF 2014 0-1 (26)}) 7. Nbd2 (7. Nfd2 Nc6 8. e3 Be7 9. Bd3 O-O 10. O-O d5 11. a3 Bd7 12. Nc3 Ne8 13. Bg3 Bd6 14. f4 Qd8 15. Nf3 Be7 16. Be1 Rc8 17. g4 Nd6 18. Kh1 f5 {Straka,Z (2569)-Dunlop,G (2511) ICCF 2017 1/ 2-1/2 (73)}) 7... Nc6 8. e3 d5 (8... Be7 9. a3 d5 10. Bd3 O-O 11. O-O Qd8 12. Rc1 Bd7 13. Re1 Rc8 14. b4 a6 15. Nb3 Ne4 16. Bxe7 Qxe7 17. Bxe4 dxe4 18. Nfd2 f5 19. Nc4 Nb8 20. Nc5 {Maldonado Pacheco,J (2356)-Salzmann,S (2320) ICCF 2018 1-0 (75)}) 9. a3 Bd6 10. Bd3 a6 11. b4 Qc7 12. Rc1 O-O 13. Bxf6 gxf6 14. Nh4 Bd7 15. Qg4+ Kh8 16. Qh5 Kg7 17. f4 {Savchur,F (2577)-Aldrete Lobo,J (2514) ICCF 2005 0-1 (26)}) (5... Qb6 6. Qc2 Be7 7. Nbd2 d5 8. e3 Nbd7 9. Bd3 c4 10. Be2 O-O 11. e4 Re8 12. O-O Qc6 13. e5 Nh7 14. b3 Bxh4 15. Nxh4 cxb3 16. axb3 Nb6 17. Bd3 {McLaughlin,E (1681)-Kircher,C ICCF 2011 0-1 (50)}) 6. e3 (6. Nbd2 cxd4 7. cxd4 Qb6 8. e3 Qxb2 9. Bd3 (9. Nc4 Bb4+ 10. Nfd2 Bxd2+ 11. Nxd2 b6 12. Bxf6 gxf6 13. Be2 Na5 14. Rb1 Qa3 15. d5 f5 16. O-O Bb7 17. e4 O-O-O 18. exf5 Bxd5 19. Nb3 Kb8 20. Bf3 Nxb3 {Waite,D (2102)-Mills,H (2101) ICCF 2015 1/2-1/2 (59)}) 9... Nb4 10. Ne5 Ng4 11. Rb1 Nxe5 12. Rxb2 Nexd3+ 13. Ke2 Nxb2 14. Qb3 g5 15. Bg3 b6 16. Qxb2 Ba6+ 17. Kf3 f6 {Puleston,T (1807)-Szymanski,R (2325) ICCF 2010 0-1}) 6... Qb6 (6... d5 7. Bd3 c4 8. Be2 Be7 9. O-O O-O 10. Nbd2 Nd7 11. Bxe7 Qxe7 12. Re1 b5 13. e4 Qd6 14. Qc2 a5 15. a3 a4 16. Bf1 dxe4 17. Nxe4 Qc7 18. g3 {Maisonneuve,L (1591)-Beck,G (1964) ICCF 2016 0-1 (41)}) 7. Qc2 (7. Qb3 d5 8. Nbd2 Nh5 9. Be2 g5 10. Ne5 cxd4 11. Qxb6 axb6 12. cxd4 Nxe5 13. dxe5 Ng7 14. Bg3 Bd7 15. h4 Nf5 16. hxg5 Nxg3 17. fxg3 {Domenche Redondo,F (1910) -Pérez López,A (1978) ICCF 2014 0-1 (39)}) 7... d5 8. Nbd2 (8. Be2 Ne4 9. Nbd2 g5 10. Bg3 Nxg3 11. dxc5 Bxc5 12. hxg3 Be7 13. e4 g4 14. Nh4 h5 15. Rd1 Bd7 16. exd5 exd5 17. Nb3 Be6 18. Nf5 Bf6 19. Bb5 O-O-O {Galytskyi,V (2413) -Komarica,B (2407) ICCF 2020 1/2-1/2 (30)}) 8... cxd4 9. Nxd4 Be7 10. Be2 Bd7 11. Bg3 O-O 12. a4 Rfc8 13. Qb1 a6 14. O-O Nxd4 15. exd4 Qd8 16. Be5 Bc6 { Armién,B (2325)-Salzmann,S (2344) ICCF 2021 1/2-1/2 (25)}) (5. Nc3 cxd4 (5... d5 6. e3 Bd7 7. Bd3 cxd4 8. Nxd4 Nc6 9. Nxc6 Bxc6 10. O-O Be7 11. Nb5 e5 12. f4 exf4 13. exf4 O-O 14. Bf2 Bxb5 15. Bxb5 Qc7 16. Kh1 Qxf4 17. Bc5 {Lagergren,H (1949)-Kuosa,N ICCF 2007 0-1 (37)}) 6. Bxf6 Qxf6 7. Qxd4 Qxd4 8. Nxd4 a6 9. e3 b5 10. Be2 Bb7 11. Bf3 d5 12. O-O-O Nd7 13. h4 b4 14. Nce2 Be7 15. Nf4 O-O 16. Kb1 a5 {Justesen,A (1922)-Mut Company,G (2229) ICCF 2011 0-1 (31)}) (5. dxc5 Bxc5 6. Nc3 d5 7. Bxf6 Qxf6 8. e3 Bb4 9. Bb5+ Nc6 10. a3 Bxc3+ 11. bxc3 Qxc3+ 12. Kf1 Bd7 13. Ne5 Qxe5 14. h4 a6 15. Bd3 Rc8 16. Rh3 Ne7 {Mansfield, J-Hipwell,C (1650) ICCF 2017 0-1}) 5... cxd4 (5... Qb6 6. Nbd2 (6. b3 Nc6 (6... g5 7. Bg3 Ne4 (7... Nc6 8. c3 Ne4 9. Bd3 Nxg3 10. hxg3 g4 11. Ne5 cxd4 12. Nc4 Qc7 13. exd4 h5 14. Ne3 Bg7 15. Na3 d5 16. Qc2 Nxd4 17. cxd4 Qa5+ {Ybarra, M-Bellegotti,G (2415) ICCF 2016 0-1 (32)}) 8. dxc5 Qxc5 9. Be5 Rg8 10. Be2 g4 11. Bd4 Qf5 12. Bd3 gxf3 13. Qxf3 Qa5+ 14. c3 d5 15. Bxe4 dxe4 16. Qxe4 Nc6 17. O-O Qh5 18. f4 {Casella,S (1919)-Pasmov,A ICCF 2016 0-1}) 7. Be2 g5 8. Bg3 Ne4 9. c3 d5 10. Qc2 cxd4 11. exd4 Bg7 12. Bd3 Nxg3 13. hxg3 g4 14. Ne5 Nxd4 15. cxd4 Qxd4 16. Bb5+ Kf8 17. Ng6+ fxg6 {Arteaga Hernández,L (1817)-Colina,A ICCF 2013 0-1 (32)}) (6. Nc3 cxd4 (6... Be7 7. Rb1 d5 8. Bd3 cxd4 9. exd4 Nc6 10. O-O O-O 11. a3 Bd7 12. h3 Rac8 13. Re1 a6 14. Ne2 Rfe8 15. c3 Ne4 16. c4 Bxh4 17. Nxh4 Nxd4 {Pietrobono,A (2214)-Gromotka,H (2247) ICCF 2014 0-1 (52)}) 7. Qxd4 Qxb2 8. Rb1 Qa3 9. Bxf6 gxf6 10. Qxf6 Rg8 11. Ne4 Nc6 12. Qf4 Rg6 13. Bb5 f5 14. Bxc6 Qa5+ 15. c3 bxc6 16. Ne5 Rxg2 17. Rd1 Be7 {Kopsa,P (2289) -Kuosmanen,K (2205) ICCF 2021 1/2-1/2}) (6. Qc1 g5 (6... cxd4 7. Nxd4 Nc6 8. c3 Be7 9. Nd2 d5 10. Bd3 O-O 11. f4 e5 12. Nxc6 Qxe3+ 13. Be2 bxc6 14. Nf3 Qxf4 15. Qxf4 exf4 16. O-O g5 17. Bf2 Ne4 18. Nd4 {Zondervan,F-Roggeveen,P ICCF 2013 0-1 (26)}) 7. Bg3 cxd4 8. Nxd4 Ne4 9. c3 Nxg3 10. hxg3 d5 11. Qc2 Bd7 12. Nd2 Bg7 13. O-O-O Na6 14. Be2 Nc5 15. Kb1 Ba4 16. b3 Bd7 17. c4 Rc8 {Marx,P (1927)-Rallabandi,P (2186) ICCF 2017 0-1 (35)}) 6... Qxb2 7. Bxf6 (7. Be2 Be7 8. O-O Qb6 9. Rb1 Qc7 10. dxc5 Qxc5 11. c4 O-O 12. Bxf6 Bxf6 13. Ne4 Qe7 14. c5 Nc6 15. Qc2 Qd8 16. Rfd1 Be7 17. Bb5 Qc7 18. Qa4 b6 {Demakov,V (2445)-Enescu,C (2412) ICCF 2017 1/2-1/2 (27)}) (7. Bd3 Be7 (7... d5 8. Bxf6 gxf6 9. c4 Qa3 10. Be2 Nc6 11. cxd5 exd5 12. O-O Be6 13. Rb1 c4 14. e4 dxe4 15. d5 Bxd5 16. Nxc4 Qc5 17. Rb5 Qxb5 18. Nd6+ Bxd6 19. Bxb5 {Landero Luna,V (2305)-Lecha González, J (2207) ICCF 2020 1-0 (52)}) 8. Rb1 (8. O-O d5 9. c4 Qa3 10. Qe2 cxd4 11. Nxd4 O-O 12. cxd5 exd5 13. Rfc1 Bg4 14. f3 Bd7 15. Rc7 Bc6 16. Rxe7 Qxe7 17. Nf5 Qe5 18. Nb3 Bb5 19. Nxh6+ gxh6 {Powers Jr.,K (2345)-Marchisotti,M (2355) ICCF 2020 1/2-1/2 (48)}) 8... Qxa2 (8... Qa3 9. Bxf6 gxf6 10. d5 exd5 11. O-O Nc6 12. Re1 c4 13. Bf5 Qc5 14. c3 h5 15. e4 Kf8 16. exd5 Qxd5 17. Qc2 Ne5 18. Re2 Bc5 19. h3 Rb8 20. Be4 {Landero Luna,V (2272)-Zenner,C (2287) ICCF 2019 1-0 (42)}) 9. Bxf6 Bxf6 10. Nc4 Qa4 11. Nd6+ Ke7 12. dxc5 Qa5+ 13. Nd2 Qxc5 14. N2c4 a6 15. Rb6 Bc3+ 16. Kf1 Be5 17. Ne4 {Powers Jr.,K (2387)-Sirk,M (2372) ICCF 2020 1/ 2-1/2}) (7. Rb1 Qxa2 8. Be2 Nc6 9. O-O d5 10. c4 cxd4 11. Ra1 Qb2 12. Bxf6 gxf6 13. cxd5 exd5 14. Rb1 Qa3 15. Nxd4 Nxd4 16. exd4 Bb4 17. Nf3 Bd7 18. Ra1 Qb2 { Ybarra,M (2136)-Devine,G (2141) ICCF 2019 1-0 (46)}) 7... gxf6 8. Bd3 (8. Be2 cxd4 9. exd4 Bg7 10. O-O O-O 11. Rb1 Qxa2 12. Nc4 Qa4 13. d5 Na6 14. Nd4 f5 15. Qd2 d6 16. Rfd1 Nc5 17. Ra1 Qe8 18. Nb6 Rb8 {Casás,E (2322)-Simal Moreira,L (2359) ICCF 2017 0-1 (60)}) 8... Nc6 9. O-O cxd4 10. Rb1 Qxa2 11. exd4 Qa5 ( 11... d5 12. c4 Be7 13. Re1 (13. Ra1 Qb2 14. cxd5 exd5 15. Nb3 Kf8 16. Re1 h5 17. Re3 Bd6 {1/2-1/2 (17) Goncharenko,G (2495)-Moreto Quintana,A (2448) ICCF 2018}) 13... Qa5 14. Rb5 Qc7 15. cxd5 a6 16. Rb3 exd5 17. Nf1 a5 18. Ne3 Be6 19. Rb5 Rd8 20. Nf5 Bb4 21. Ng7+ Kd7 22. Qb3 Rdg8 23. Nf5 {Landero Luna,V (2307)-Valderas Viejo,J (2230) ICCF 2020 1/2-1/2 (48)}) 12. c3 (12. Ne4 Be7 13. Rb5 Qc7 14. d5 a6 15. Rb3 (15. Qa1 Ne5 16. Nxe5 Qxe5 (16... fxe5 17. d6 Bxd6 18. Nxd6+ Qxd6 19. Rxe5 Rg8 20. Rd1 Qe7 21. Be4 d6 22. Rh5 e5 23. Rxh6 Be6 24. g3 O-O-O 25. Rb1 Rd7 26. c4 {1/2-1/2 (26) Jacquin,R (2560)-Kunzelmann,F (2464) ICCF 2009 1 d4 Nf6 2 Nf3 e6: Torre,-London and Colle Systems}) 17. dxe6 Qxa1 18. exf7+ Kxf7 19. Rxa1 Rd8 20. Rh5 d5 21. Nc3 f5 22. Rxh6 Bf6 23. Ra3 Be6 24. Rh3 Be5 25. Rh7+ Bg7 26. Ne2 Rh8 {Kozlov,V (2409)-de la Rosa Solórzano,J (2407) ICCF 2020 1/2-1/2 (28)}) (15. d6 Bxd6 16. Nxf6+ Kd8 17. Rh5 Bf8 18. Ng5 d5 19. c4 Bg7 20. Ngh7 dxc4 21. Bxc4+ Ke7 22. Qf3 Nd4 23. Qe3 Bxf6 24. Nxf6 Qxc4 25. Nd5+ Kf8 26. Qa3+ Kg8 {Landero Luna,V (2337)-Salewski,B (2308) ICCF 2014 1/2-1/2 (29)}) 15... Ne5 16. Be2 d6 17. Nd4 exd5 18. Nc3 Bd8 19. Nxd5 Qc5 20. Ne3 Kf8 21. Qa1 Rg8 22. c4 Nc6 23. Rd1 Nxd4 {Tyulenko,Y (2411)-Trofimov,N (2306) ICCF 2017 1/2-1/2 (47)}) 12... d5 13. c4 Nb4 14. Nb3 Qd8 15. cxd5 Nxd5 16. Rc1 b6 17. Bb5+ {Bratholm,P (2047)-Uifelean,A (1860) ICCF 2009 0-1 (39)}) ( 5... b6 6. Bd3 (6. Nbd2 Bb7 7. c3 Be7 8. Qb3 (8. Be2 d6 (8... O-O 9. O-O d6 10. h3 Nbd7 11. Rc1 Ne4 12. Bxe7 Qxe7 13. Nxe4 Bxe4 14. Nd2 Bb7 15. Qa4 a6 16. Rfd1 b5 17. Qc2 cxd4 18. cxd4 Rfc8 19. Qd3 Nb6 20. Bf3 {Winter,M-Sarakenidis,N ICCF 2013 1/2-1/2 (32)}) 9. Bb5+ Nc6 10. O-O O-O 11. Qe2 a6 12. Bd3 b5 13. Bc2 cxd4 14. Qd3 g6 15. exd4 Rc8 16. a4 Nd5 17. axb5 Ncb4 18. cxb4 Nxb4 19. Bxe7 Qxe7 { Seker,M-Heilmann,U (1757) ICCF 2014 1/2-1/2 (27)}) 8... Ne4 9. Bxe7 Qxe7 10. Nxe4 Bxe4 11. Be2 Nc6 12. O-O O-O 13. Nd2 Bg6 14. Bf3 d5 15. Rfe1 Rac8 16. Rad1 f5 17. Be2 f4 {Campos Parejo,A (1938)-Shabaev,V ICCF 2008 1/2-1/2 (34)}) (6. d5 g5 7. Bg3 Nxd5 8. Ne5 Bb7 9. c4 Nf6 10. Nc3 d6 11. Ng4 Nxg4 12. Qxg4 h5 13. Qd1 h4 14. Bxd6 Qxd6 15. Qc2 h3 16. Ne4 Qe5 17. f3 f5 {Acacio,A-García Rosales,J (1848) ICCF 2013 0-1}) (6. Be2 Be7 7. O-O O-O 8. c4 Bb7 9. Nc3 cxd4 10. Nxd4 a6 11. b3 d6 12. Bf3 Ra7 13. Bxb7 Rxb7 14. Rc1 Rc7 15. f4 Nbd7 16. Qf3 Qa8 17. Qxa8 Rxa8 {Wicklund-Hansen,G (2183)-Boschma,B (2357) ICCF 2004 1/2-1/2}) (6. c4 cxd4 7. Nxd4 Bb7 8. Nc3 a6 9. f3 Nc6 10. Be2 Bc5 11. O-O Nxd4 12. exd4 Be7 13. Qb3 O-O 14. Bf2 Rb8 15. Bg3 d6 16. Rae1 Nh5 17. Bf2 Nf4 {Naeter,B (2169)-Král, Z (2111) ICCF 2016 1-0 (28)}) 6... Bb7 7. O-O Be7 8. c4 cxd4 9. Nxd4 O-O 10. Nc3 Nc6 (10... d6 11. Rc1 Nbd7 12. f3 Rc8 13. Bf2 Ne5 14. b3 Nxd3 15. Qxd3 Nd7 16. e4 Ne5 17. Qe2 Ng6 18. Rfd1 a6 19. Be3 Ne5 20. Nc2 Qc7 21. Na4 Nd7 22. Nc3 {Turner,L (1775)-Sutton,J (2072) ICCF 2013 0-1 (44)}) 11. Nxc6 Bxc6 12. Qe2 Ne4 13. Bxe7 Nxc3 14. Bxd8 Nxe2+ 15. Bxe2 Rfxd8 16. Rfd1 Rac8 17. Rd4 {Whaley,M (2328)-Sýkora,J (2380) ICCF 2012 1/2-1/2 (49)}) (5... a6 6. c3 Nc6 7. Bd3 cxd4 8. cxd4 b5 9. O-O Bb7 10. Nc3 Rc8 11. Rc1 Be7 12. Bb1 Na5 13. Qe2 Bxf3 14. Qxf3 d5 15. Qe2 Qd7 16. Bxf6 gxf6 17. e4 {Skorna,U (2265)-Popov,V (2213) ICCF 2013 1-0 (85)}) (5... Be7 6. Be2 (6. c3 cxd4 7. cxd4 Qb6 8. Qc2 O-O 9. Nc3 d6 10. Bd3 Bd7 11. O-O Nc6 12. a3 Rac8 13. Rac1 a6 14. Qb1 Rc7 15. Nd2 Rfc8 16. Bxf6 gxf6 17. Rc2 {Guzy,G (2471)-Sheppard,B (2038) ICCF 2006 1/2-1/2}) 6... Qb6 7. b3 Nc6 8. O-O d5 9. Nc3 cxd4 10. exd4 Bd7 11. Qd3 Rc8 12. Rfe1 Nb4 13. Qd2 g5 14. Bg3 Qc6 15. Bb5 Qxc3 16. Bxd7+ Nxd7 17. Red1 {Weggen,R (1892)-Haller,P (2028) ICCF 2009 0-1}) 6. exd4 (6. Nxd4 d5 (6... a6 7. Bd3 Be7 8. Nd2 d5 9. a3 e5 10. Nf5 Bxf5 11. Bxf5 g6 12. Bh3 Nc6 13. Qe2 g5 14. Bg3 g4 15. Bxg4 h5 16. Bf5 h4 17. Bxe5 Nxe5 18. h3 {Naumov,Y-Shabaev,V (2073) ICCF 2015 0-1 (26)}) 7. Bb5+ (7. Bd3 Be7 8. Nd2 Nc6 {0-1 (8) Cieslak,B-Buice,R ICCF 2011}) 7... Bd7 8. Qd3 Qa5+ 9. Nd2 Ne4 10. c3 Nxd2 11. Bxd7+ Nxd7 12. Qxd2 Rc8 13. O-O Bd6 14. Rfe1 O-O 15. a3 Rfe8 16. Qd3 Ne5 17. Qb5 Qc7 {McLaughlin,E (1539)-Avery,B (1631) ICCF 2021 0-1}) 6... Qb6 (6... b6 7. c4 (7. h3 Be7 8. Bd3 Nc6 9. c3 Nh5 10. Bxe7 Nxe7 11. Be4 Rb8 12. Ne5 Nf6 13. Nd2 O-O 14. Qc2 Nxe4 15. Nxe4 d6 16. Nf3 Ba6 17. Ng3 Ng6 18. Nh5 Rc8 {White,R (1756)-Rózanski,R (2107) ICCF 2016 0-1 (25)}) (7. Bd3 Bb7 8. O-O Be7 9. Nbd2 (9. c4 Bxf3 10. Qxf3 Nc6 11. Qh3 Nxd4 12. Nc3 Rc8 13. Rad1 Qc7 14. Rfe1 O-O 15. Ne4 Qd8 16. Bxf6 Bxf6 17. Bb1 g6 18. Nxf6+ Qxf6 19. b3 Rfd8 20. Qe3 Nf5 {Pyrich,G (2193)-Cretu,S (2234) ICCF 2012 1/ 2-1/2}) 9... O-O 10. Re1 (10. c3 d6 11. Qc2 Nbd7 12. Rfe1 Rc8 13. Ne4 Nxe4 14. Bxe7 Qxe7 15. Bxe4 Nf6 16. Bxb7 Qxb7 17. h3 b5 18. Rac1 Rc7 19. a3 Rfc8 20. Qd3 Qb6 21. Re2 a5 {Maisonneuve,L (1608)-Teyssier,A (2109) ICCF 2017 0-1 (27)}) ( 10. Qe2 d6 11. Rfe1 Nbd7 12. c3 Re8 13. Nc4 Qc7 14. Rac1 Nh5 15. Bxe7 Rxe7 16. Qe3 Ndf6 17. g3 Rae8 18. Ncd2 a6 19. Bb1 e5 20. dxe5 dxe5 21. Ne4 Nd5 {Budin,F (1951)-Ghiani,B ICCF 2007 0-1 (29)}) 10... d6 11. Bxf6 (11. c3 Nbd7 (11... Nh5 12. Be4 Bxe4 13. Bxe7 Qxe7 14. Nxe4 Nf6 15. Nxf6+ Qxf6 16. Qd3 Nd7 17. Re2 Rac8 18. Rae1 Qd8 19. a3 Nf6 20. Nd2 a5 21. Ne4 {1/2-1/2 (21) Zimmermann,F (2169) -Toma,R (2219) ICCF 2019}) 12. Rc1 Re8 13. Nc4 Qc7 14. Ne3 Rac8 15. Nd2 Nd5 16. Bg3 Nxe3 17. Rxe3 Nf6 18. a3 Qc6 19. Qf1 Qd7 20. h3 Bc6 21. Nf3 b5 22. b3 Nd5 { Ruimy,M (2380)-Bozyavkin,A (2362) ICCF 2007 0-1 (61)}) (11. h3 Nbd7 12. Bg3 a6 13. Rc1 Re8 14. a3 Ra7 15. Qe2 Qa8 16. c4 d5 17. Rc2 Rc8 18. Bh2 dxc4 19. Rxc4 b5 20. Rxc8+ Qxc8 21. Nb3 Bd5 22. Rc1 Qf8 {Bendaña Guerrero,G (2382)-Soza de la Carrera,J (2455) ICCF 2005 1/2-1/2 (29)}) 11... Bxf6 12. Be4 d5 13. Bd3 Nd7 14. c3 Qc7 15. Qe2 Rfe8 16. Ne5 Nxe5 17. dxe5 Be7 18. Nb3 {Bratholm,P (2047) -Schaller,T ICCF 2008 1/2-1/2}) 7... Be7 8. Nc3 Bb7 9. Be2 O-O 10. O-O d5 11. Bxf6 Bxf6 12. cxd5 exd5 13. Ne5 Bxe5 14. dxe5 d4 15. Nb5 Qg5 16. Bf3 Bxf3 17. Qxf3 Nd7 18. Nxd4 {Nowakowski,M (2407)-Bortnik,E (2108) ICCF 2007 1/2-1/2 (30)} ) (6... Be7 7. Bd3 (7. Nbd2 b6 8. Bd3 Bb7 (8... Ba6 9. Bxa6 Nxa6 10. c3 O-O 11. O-O Nc7 12. Re1 d6 13. Nf1 Nfd5 14. Bxe7 Nxe7 15. Qd3 b5 16. a4 a6 17. Ra2 Qd7 18. Rea1 Rfb8 19. Ne3 Qc6 20. Ne1 {Matlak,J (2565)-Müller,G (2589) ICCF 2007 0-1 (83)}) 9. Qe2 (9. c3 d6 10. Qe2 (10. O-O Nbd7 11. h3 O-O 12. Bg3 a6 13. Qe2 Qc7 14. Rfe1 Rfe8 15. Nf1 Nd5 16. Ne3 Nxe3 17. fxe3 e5 18. e4 b5 19. Rad1 Bf6 20. Bb1 Nf8 21. Nh2 Ng6 {Kögler,K (2552)-Dunlop,G (2536) ICCF 2019 1/2-1/2 (43)}) 10... Nh5 (10... O-O 11. O-O Nbd7 12. c4 (12. Rae1 a6 13. a4 Re8 14. Bc2 Qc7 15. Rc1 e5 16. Bg3 Nh5 17. Rfe1 Nxg3 18. hxg3 Rad8 19. Rcd1 Nf6 20. Qc4 Qxc4 21. Nxc4 e4 22. Nfd2 d5 23. Nxb6 a5 {Trana,A (2375)-Lindhom,E (2243) ICCF 2006 1/2-1/2 (33)}) 12... Rc8 13. a4 Re8 14. Rfe1 d5 15. Rac1 dxc4 16. Nxc4 Nd5 17. Nd6 Rxc1 18. Rxc1 Bxh4 19. Nxb7 Qb8 20. Bb5 Qxb7 21. Nxh4 Rc8 22. Rxc8+ { García Gil,J (2317)-Flores Ramos,J (2353) ICCF 2007 1/2-1/2 (26)}) 11. Bxe7 Qxe7 12. g3 Nf6 13. O-O-O Nbd7 14. Rhe1 O-O 15. Kb1 a6 16. Nh4 Qd8 17. f4 Re8 18. h3 b5 19. Qf2 Rc8 20. g4 Nd5 {Bronnikov,A (2192)-Almarza Mato,C (1977) ICCF 2010 1-0 (31)}) (9. Bxf6 Bxf6 (9... gxf6 10. Qe2 Nc6 11. c3 Rg8 12. g3 Qc7 13. a3 O-O-O 14. O-O-O d5 15. Kb1 Kb8 16. Ne1 f5 17. Nc2 Bd6 18. Nb4 Nxb4 19. axb4 f4 20. Rhe1 a5 21. bxa5 {Landero Luna,V (2341)-Walther,J (2242) ICCF 2009 1-0 (52)}) 10. Qe2 Qc7 11. c3 Nc6 12. O-O O-O 13. Rfe1 g6 14. Ne5 Bg7 15. Rad1 Ne7 16. Be4 d6 17. Bxb7 Qxb7 18. Nd3 Rfc8 19. Ne4 Qc7 20. Qf3 f5 {Landero Luna, V (2446)-Armengol Comas,J ICCF 2005 1/2-1/2 (63)}) 9... Nd5 10. Bxe7 Qxe7 11. Qe5 (11. O-O d6 (11... Nc6 12. Bc4 Nf4 13. Qe3 g5 14. Rfc1 Rc8 15. c3 O-O 16. Bf1 f5 17. g3 Ng6 18. Nc4 Kg7 19. Qe2 h5 20. Re1 f4 21. Qd1 d6 22. Nxd6 Qxd6 23. Nxg5 {Landero Luna,V (2337)-Kriksciunas,B (2275) ICCF 2014 0-1 (62)}) 12. Be4 O-O 13. Rfe1 Nf6 14. Bd3 Rc8 15. c3 Qc7 16. Qe3 Nbd7 17. Rad1 a6 18. Qf4 b5 19. Qh4 Bd5 20. g4 Qc6 21. Re3 g6 22. b3 Bxf3 {Landero Luna,V (2408)-Paredes Prats,J (2164) ICCF 2007 1/2-1/2 (38)}) 11... Nc6 12. Qg3 Ncb4 13. Be4 f5 14. Qg6+ Qf7 15. Qxf7+ Kxf7 16. Bxd5 Bxd5 17. Kd1 Rac8 18. a3 {Taras,I (2286) -Dorer,M (2235) ICCF 2007 1/2-1/2 (50)}) 7... O-O (7... b6 8. Qe2 Bb7 9. c3 O-O 10. Nbd2 Nc6 11. Bxf6 Bxf6 12. Ne4 Be7 13. O-O-O a5 14. Kb1 d5 15. Ng3 a4 16. Nh5 a3 17. b3 Qc7 18. g4 b5 19. g5 {Schiendorfer,R (2327)-Klimakovs,S (2253) ICCF 2008 1-0}) (7... Qb6 8. b3 O-O 9. c3 d6 10. O-O Bd7 11. Re1 Rc8 12. h3 Bc6 13. Nbd2 Nbd7 14. c4 Re8 15. Qc2 Rac8 16. Bg3 a6 17. a3 Qa7 18. b4 Nb6 { Jacquin,R (2499)-Carlsen,T (2641) ICCF 2007 1-0 (58)}) 8. O-O (8. Nbd2 b6 (8... Nc6 9. c3 Nh5 10. Bxe7 Nxe7 11. O-O Nf4 12. Bc2 b6 13. g3 Nfd5 14. Re1 Bb7 15. Ne4 Qc7 16. Rc1 Rac8 17. a3 Nf5 18. Qd3 Rfe8 19. Bb1 Qd8 20. Rcd1 {Rost,D (2445)-Kilichenko,A (2375) ICCF 2015 1/2-1/2 (27)}) 9. c4 Bb7 10. O-O Nc6 11. Re1 d5 12. a3 Rc8 13. b4 dxc4 14. Nxc4 Nd5 15. Bxe7 Ncxe7 16. Rc1 Nf4 17. Bf1 Nf5 18. Nce5 f6 19. Rxc8 Qxc8 {Oker,B (1778)-Kiddell,T ICCF 2010 0-1 (41)}) 8... b6 9. c4 Bb7 10. Nc3 Nc6 11. Rc1 (11. Bc2 d5 12. Bxf6 Bxf6 13. cxd5 Nb4 14. dxe6 Nxc2 15. Qxc2 Bxf3 16. gxf3 fxe6 17. Qb3 Qxd4 18. Rae1 Kh8 19. Rxe6 { Pritchard,O (2140)-Santamaría Pérez,T (2343) ICCF 2016 1/2-1/2 (62)}) 11... d5 12. cxd5 Nxd5 13. Nxd5 Bxh4 14. Ne3 Bf6 15. Be4 Rc8 16. Ng4 Nxd4 17. Rxc8 Nxf3+ 18. Qxf3 {Schmidt,T (2538)-Teichmann,C (2425) ICCF 2007 1/2-1/2 (29)}) ( 6... d5 7. Nbd2 Bd6 8. Ne5 Qb6 9. Nb3 Bxe5 10. dxe5 Qb4+ 11. c3 Qxh4 12. exf6 Qxf6 13. Be2 Nc6 14. O-O O-O 15. Bf3 b6 16. Be2 Bb7 17. f4 Rad8 18. Bb5 { Koch,M-Scott,A ICCF 2007 1/2-1/2 (27)}) 7. b3 (7. Qc1 Nc6 8. c3 d5 (8... g5 9. Bg3 d5 10. Bd3 Ne4 11. Bxe4 dxe4 12. Ne5 Be7 13. O-O Nxe5 14. Bxe5 f6 15. Bg3 O-O 16. Nd2 e5 17. Qb1 Rf7 18. Qxe4 f5 19. Qc2 f4 20. Nc4 {Raby,E (1886) -Wilkinson,C ICCF 2021 0-1 (63)}) 9. Nbd2 (9. Bd3 Bd7 (9... Ne4 10. Nbd2 g5 11. Bg3 Nxg3 12. hxg3 g4 13. Nh4 Bd7 14. O-O Be7 (14... Qd8 15. Nb3 Qg5 16. Qd1 Bd6 17. Re1 O-O 18. Nc5 Bxc5 19. dxc5 Rfd8 20. Bc2 b6 {Morelli,A (2261)-Mary,P (2457) ICCF 2013 1/2-1/2 (34)}) 15. Nb3 O-O-O 16. Qf4 {1/2-1/2 (16) Schiendorfer,R (2360)-Laine,P (2407) ICCF 2010}) 10. O-O (10. Bg3 Nh5 11. a4 Nxg3 12. hxg3 Bd6 13. Nbd2 Rc8 14. O-O Kf8 15. Nb3 a6 16. a5 Qc7 17. Re1 h5 18. Qe3 Re8 19. Ne5 Re7 20. Bc2 Be8 21. f4 {Santos,M (2436)-Ünalmis,H (2553) ICCF 2016 1/2-1/2 (54)}) 10... Nh5 11. Bg3 Nxg3 12. hxg3 g5 13. a4 g4 14. Nh4 h5 15. Na3 Bh6 16. Qe1 a6 17. Nc2 Rg8 18. Ra2 Ne7 19. Na1 a5 20. Bh7 {1/2-1/2 (20) Gray,G (2373)-Krzyzanowski,A (2353) ICCF 2021}) (9. Be2 g5 10. Bg3 Nh5 11. Nbd2 g4 12. Ne5 Nxg3 13. hxg3 Nxe5 14. dxe5 h5 15. Nb3 Bh6 16. Rxh5 Bxc1 17. Rxh8+ Ke7 18. Rxc1 Qc7 19. Rh5 Bd7 20. Nd4 b5 {Moraes,F (1960)-Maia,V (2347) ICCF 2017 0-1 (62)}) 9... Nh5 (9... Bd6 10. Bd3 Nh5 11. Bg3 Nxg3 12. hxg3 Bd7 (12... e5 13. dxe5 Bxe5 14. Nxe5 Nxe5 15. Be2 Bg4 16. Nf3 O-O 17. O-O Rae8 18. Qd2 Nc4 19. Bxc4 dxc4 20. Nd4 Bh5 21. f3 {1/2-1/2 (21) Vivante-Sowter,J (2123) -Kaczmarek,R (2178) ICCF 2021}) 13. a3 e5 14. dxe5 Nxe5 15. Nxe5 Bxe5 16. Nf3 Bf6 17. Qd2 O-O 18. O-O-O Rfd8 19. Nd4 Kf8 20. Bc2 Bg4 21. f3 {Marturano,M (1948)-Glaser,K (2238) ICCF 2014 1/2-1/2 (57)}) 10. g4 (10. Qc2 Bd7 11. Bd3 g5 12. Bg3 Nxg3 13. hxg3 g4 14. Nh2 f5 15. Nb3 O-O-O 16. Qe2 Re8 17. O-O-O e5 18. Qc2 e4 {Gongora-Montes,B (2114)-Suarez,M (2342) ICCF 2019 0-1 (66)}) 10... g5 ( 10... Nf4 11. Bg3 Bd6 12. Nb3 Qc7 13. Qd2 O-O 14. O-O-O a5 15. Kb1 a4 16. Nc1 a3 17. b3 f6 18. Ne2 Ng6 19. Ne1 Bd7 20. Bxd6 Qxd6 21. f4 Nge7 22. Ng3 { Kamanel Zamora,J (2291)-Gadzinskiy,Y (1962) ICCF 2018 1-0 (75)}) (10... Nf6 11. h3 Bd6 12. Qc2 Bd7 13. O-O-O a5 14. Kb1 a4 15. Rg1 a3 16. b3 Rc8 17. Qd3 Qa5 18. Rc1 Ne7 19. Bg3 Ne4 20. Bxd6 Nxd6 21. Qe3 Ne4 {Powers Roibal,F-Medina Jimenez,A ICCF 2018 1/2-1/2 (49)}) 11. gxh5 gxh4 12. Qc2 Qd8 13. Bb5 Bd7 14. Bxc6 Bxc6 15. Ne5 Qg5 16. O-O-O Bd6 17. Rhg1 Qxh5 18. Ndf3 O-O-O {Powers Roibal,F-Camps,J (1949) ICCF 2017 1-0 (59)}) (7. Nbd2 Qxb2 (7... d5 8. Rb1 Bd7 9. Be2 (9. c3 Bb5 10. Bxb5+ Qxb5 11. Bxf6 gxf6 12. a4 Qd3 13. Qb3 b6 14. Ra1 Rg8 15. g3 Na6 16. Kd1 Nc7 17. Re1 Bd6 18. Re3 Qg6 19. Nh4 Qg4+ 20. Kc2 Kf8 { Polishchuk,A (2159)-Hansen,K (2223) ICCF 2008 1/2-1/2 (34)}) 9... Nc6 10. c3 Nh5 11. O-O Nf4 12. Re1 Nxe2+ 13. Qxe2 Bd6 14. Bg3 Ne7 15. Bxd6 Qxd6 16. Qe5 Qxe5 17. dxe5 a5 18. Nd4 Nc6 19. f4 {Ludgate,A (2482)-Ísólfsson,E (2468) ICCF 2018 1/2-1/2}) 8. Bxf6 (8. Bd3 Be7 9. Rb1 (9. O-O d5 (9... Qb6 10. c4 O-O 11. Re1 Qd8 12. Rc1 Nc6 13. d5 Nb4 14. Bb1 Nfxd5 15. cxd5 Bxh4 16. Nxh4 Qxh4 17. Re4 Qe7 18. Nf1 Na6 19. Ng3 f5 20. Re3 Qf7 21. Nh5 {Landero Luna,V (2272) -Cañamas Soler,J (2375) ICCF 2019 1-0 (35)}) 10. c4 (10. Rb1 Qxa2 11. Ne5 O-O 12. Nb3 Qa3 13. Nc5 Qa5 14. Nxb7 Qc7 15. Nc5 Nc6 16. Nxc6 Qxc6 17. Re1 a5 18. Re3 Qc7 19. c3 Ra7 20. Bc2 Ba6 21. Rg3 Bc4 {Landero Luna,V (2309)-Viver Ruiz,J (2086) ICCF 2020 1/2-1/2 (43)}) (10. Re1 Nc6 11. Rb1 Qxa2 12. Bb5 O-O 13. Bxc6 bxc6 14. c4 Qa6 15. Ne5 dxc4 16. Ndxc4 Bd7 17. Bxf6 Bxf6 18. Nxd7 Qxc4 19. Rc1 Qb5 20. Rc5 Qb4 21. Nxf8 Bxd4 {Ralls,R (2085)-Ernst,C (2113) ICCF 2015 1/2-1/2} ) 10... Qa3 (10... O-O 11. cxd5 exd5 12. Re1 Nc6 13. h3 (13. Nb3 Ne4 14. Re2 Qa3 15. Bxe4 dxe4 16. Rxe4 Bxh4 17. Nxh4 Qd6 18. Qd2 Rd8 19. Rd1 Qd5 20. Qe2 b6 21. Re3 Be6 22. Rg3 a5 23. Nf3 Rac8 24. Qd2 Ne7 {Wittenstein,S-Bichik,A ICCF 2016 0-1 (33)}) (13. Re3 Qb4 14. Rb1 Qd6 15. Bg3 Qd8 16. h3 Re8 17. Qb3 Bf8 18. Rxe8 Qxe8 19. Re1 Qd8 20. Bb1 Qb6 21. Qd3 g6 22. Qe3 Bd7 23. Nb3 Re8 24. Ne5 Nxe5 {Grabove,M-Marcu,V ICCF 2014 0-1 (36)}) 13... Qa3 14. Re3 Qd6 15. Rc1 Be6 16. Bg3 Qd8 17. Ba6 Na5 18. Bc7 Qe8 19. Bxa5 bxa6 {Powers Roibal,F (2387)-De Filippis,F (2408) ICCF 2019 1/2-1/2 (25)}) 11. Qe2 O-O 12. cxd5 exd5 13. Ne5 Nbd7 14. Rac1 Re8 15. Rc2 Qb4 16. Ndf3 Ne4 17. Bxe7 Rxe7 18. Rfc1 Nb6 19. h3 Bf5 20. Qe3 Rae8 {Bronnikov,A (2186)-Susedenko,V (2237) ICCF 2011 0-1 (100)}) 9... Qc3 10. O-O d5 11. Rb3 Qc7 12. c4 (12. Ne5 Nc6 13. Nxc6 bxc6 14. Bg3 (14. c4 Bd6 15. Kh1 Rb8 16. c5 Bf4 17. Ra3 e5 18. dxe5 Nd7 19. e6 Nxc5 20. exf7+ Qxf7 21. Re1+ Ne6 22. Nf3 O-O 23. Bc2 Rb4 24. Bg3 Nc5 25. Ne5 Bxe5 {Powers Roibal,F (2387)-Dessaules,P (2373) ICCF 2019 1/2-1/2 (30)}) 14... Bd6 15. Bxd6 Qxd6 16. c4 O-O 17. c5 Qc7 18. f4 Rb8 19. Qe2 Rxb3 20. axb3 Re8 {Iacomi,S (2307)-Doderer,H (2336) ICCF 2019 1/2-1/2 (37)}) 12... Nc6 13. cxd5 (13. c5 O-O 14. Bb1 Bd7 15. Qc2 Rfd8 16. Re1 Kf8 17. Bg3 Qc8 18. Qb2 b6 19. Rc1 Qb7 20. Ne5 Na5 21. Rb4 Rac8 22. h3 Be8 23. Nb3 Nc4 {Landero Luna,V (2272)-Sardella,A (2263) ICCF 2019 1/2-1/2 (32)}) 13... Nxd5 14. Bg3 Bd6 15. Bxd6 Qxd6 16. Nc4 Qc7 17. Nce5 O-O 18. Nxc6 Qxc6 19. Be4 Qd6 {Petrigin,O (2072)-Sirotkin,V (2122) ICCF 2013 1/2-1/2 (38)}) (8. Rb1 Qc3 9. Bxf6 gxf6 10. Bd3 b6 11. O-O Qc7 12. Re1 Bb7 13. c4 Bg7 14. d5 O-O 15. Ne4 Na6 16. Ng3 Nc5 17. Nh5 Nxd3 18. Qxd3 f5 19. Nd4 Rfc8 {Muñoz Moreno,F (2562)-Poljak,D (2415) ICCF 2012 1-0 (49)}) 8... gxf6 9. Bd3 Nc6 10. Rb1 (10. O-O Nxd4 11. Rb1 Nxf3+ 12. Qxf3 Qd4 13. c3 Qh4 ( 13... Qd5 14. Qxd5 exd5 15. Rfe1+ Kd8 16. Rb5 b6 17. Rxd5 Bb7 18. Rd4 Bc5 19. Rf4 Re8 20. Rd1 Re6 21. Be4 Bxe4 22. Nxe4 Be7 23. f3 Rb8 24. Kf2 b5 25. Rf5 { Landero Luna,V (2357)-Morrow,W (2364) ICCF 2013 1/2-1/2 (38)}) 14. g3 Rg8 15. Ba6 Rb8 16. Bxb7 Qg4 (16... f5 17. Bxc8 Rxc8 18. Rfe1 Qf6 19. Re3 Rg5 20. Ne4 Qg7 21. Nxg5 Qxg5 {Wojtyra,S (2330)-Schüppel,R (2407) ICCF 2015 1-0 (37)}) 17. Bxc8 Qxf3 18. Bxd7+ Kxd7 19. Nxf3 Bd6 20. Nd2 Be5 21. Kg2 Rgc8 {Sedlácek,T (2218)-Eschert,U (2270) ICCF 2014 1/2-1/2}) (10. d5 Nb4 11. dxe6 Nxd3+ 12. cxd3 dxe6 13. O-O Qa3 14. Nc4 Qa6 15. a4 Rg8 16. g3 e5 17. Qe2 Be6 18. Rab1 Bc5 19. Rfe1 Rd8 20. Rb5 b6 21. d4 exd4 {Laine,J (2226)-Salcedo Mederos,P (2333) ICCF 2014 0-1 (60)}) 10... Qa3 11. O-O d5 12. Re1 Be7 (12... a6 13. Rb3 Qxa2 14. c4 Nb4 15. cxd5 Nxd3 (15... Nxd5 16. Be4 Nb4 17. Nc4 Bd7 18. Bb1 Qa4 19. Nb6 Qc6 20. Nxa8 {1-0 (20) Weil,T (2023)-Walther,J (2243) ICCF 2016}) 16. Rxd3 Qxd5 17. Ne4 Bg7 18. Qd2 Bd7 19. Qf4 f5 20. Nd6+ Kf8 21. Rc3 Bc6 22. Rc5 Qb3 23. Rec1 Kg8 24. Ne5 {Muukkonen,K (2356)-Slawinski,T (2384) ICCF 2009 1/2-1/2 (32)}) 13. Re3 Qa5 14. Bf1 Kf8 15. c4 h5 16. cxd5 Qxd5 17. Ne4 b6 18. Nc3 Qd6 {Landero Luna,V (2316)-Cardoso García,S (2319) ICCF 2021 1/2-1/2 (33)}) 7... g5 (7... Nc6 8. c3 (8. Bxf6 gxf6 9. Be2 e5 10. O-O e4 11. Nfd2 d5 12. c4 f5 13. Nc3 Bg7 14. Nxd5 Qd8 15. Nb1 Be6 16. Nbc3 Nxd4 17. Rc1 O-O 18. f3 Rc8 19. Kh1 Bxd5 { Malkov,A (2229)-Osipov,A (2223) ICCF 2015 1/2-1/2 (28)}) 8... d5 9. Bd3 Nh5 ( 9... Be7 10. O-O g5 11. Bg3 Nd7 12. Nbd2 h5 13. h4 gxh4 14. Bxh4 Qd8 15. Bxe7 Qxe7 16. c4 Kf8 17. cxd5 exd5 18. Re1 Qf6 19. Qe2 h4 20. Qe3 Nb4 21. Rac1 { Kmiecik,K (2219)-Arancibia Morales,I ICCF 2008 1/2-1/2 (40)}) 10. O-O (10. Bg3 Nxg3 11. hxg3 Bd6 12. Qe2 O-O 13. Ng5 Nxd4 14. Qh5 Nf5 15. g4 Ng3 16. fxg3 Qe3+ 17. Be2 Qc1+ 18. Bd1 Bxg3+ 19. Ke2 {Arteaga Hernández,L-Peczkowski,P ICCF 2013 0-1}) 10... Bd7 (10... Bd6 11. Re1 O-O 12. g3 Qc7 13. Nfd2 g6 14. f4 Ne7 15. Bxe7 Qxe7 16. Nf3 b6 17. Ne5 Nf6 18. Qe2 Bb7 19. a4 Rfc8 20. a5 bxa5 21. Rxa5 Qc7 22. Qa2 {Giacchetti,C (2212)-Campbell,J (2245) ICCF 2007 1/2-1/2 (45)} ) (10... g5 11. Bg3 g4 12. Nh4 Rg8 13. Qd2 Rg5 14. b4 Nxg3 15. hxg3 e5 16. dxe5 Bg7 17. Na3 Bxe5 18. Rfe1 Kf8 19. b5 Ne7 20. Nf5 Bxc3 21. Qxc3 Bxf5 22. Nc2 { Zamora,C-Badolati,S (2459) ICCF 2007 1/2-1/2 (49)}) 11. a4 (11. Nbd2 Rc8 (11... Bd6 12. Ne5 Bxe5 13. dxe5 Nxe5 14. Bc2 g6 15. Re1 Nc6 16. Rc1 O-O 17. Nf3 Qc7 18. c4 Rac8 19. Bb1 Qd6 20. Rc3 Rfe8 21. Rd3 Qf4 {Beckmann,M-Herrera Herrera,B (2083) ICCF 2017 1-0}) 12. Bg3 Ba3 13. Rb1 a5 14. Be5 Nxe5 15. Nxe5 Nf6 16. Qc2 O-O 17. f4 Be8 18. Ndf3 Nd7 19. Nxd7 Bxd7 20. c4 Qc7 21. Kh1 Rcd8 22. Qd2 Bb4 { Ybarra,M (2075)-Vera,M ICCF 2017 1/2-1/2 (57)}) (11. Re1 g5 (11... Nf4 12. Bc2 Rg8 13. a4 g5 14. Bg3 Bd6 15. Na3 Kf8 16. Qd2 Rc8 17. b4 f6 18. Rab1 Ne7 19. c4 dxc4 20. Ne5 fxe5 21. dxe5 Nf5 22. exd6 Qxd6 23. Qxd6+ {Wallinger,M (2354) -Schuster,U (2371) ICCF 2015 1/2-1/2 (36)}) 12. Ne5 Nxe5 13. Rxe5 Bd6 14. Re1 Nf4 (14... Qc7 15. Qxh5 Bxh2+ 16. Kh1 gxh4 17. Qxh4 Bd6 18. a4 h5 19. Qf6 Rg8 20. Bb5 Be7 21. Qf3 Rg5 22. Bxd7+ Kxd7 23. Qxf7 Qd6 24. Qf3 Rag8 25. Nd2 Rxg2 26. Re5 {Arancibia Guzmán,E-Arancibia Morales,I ICCF 2007 1/2-1/2 (41)}) 15. Bg3 h5 16. a4 Qc7 17. Bb5 O-O-O 18. Bxd7+ Rxd7 19. b4 h4 20. Bxf4 Bxf4 21. h3 Rg8 22. Ra2 Kb8 {Savchur,F (2473)-Iotov,V (2518) ICCF 2010 0-1 (43)}) 11... Qc7 12. Bb5 Bd6 13. c4 g5 14. Bg3 Nxg3 15. hxg3 a6 16. Bxc6 bxc6 17. a5 f6 18. Nc3 Kf7 19. c5 {Goretov,A (2364)-Lubas,J (2316) ICCF 2019 1/2-1/2 (36)}) (7... Be7 8. c3 d6 9. h3 Nc6 10. Bg3 e5 11. dxe5 Ne4 12. exd6 Nxg3 13. fxg3 Bf6 14. Be2 Be6 15. Qd3 O-O-O 16. Na3 Nb4 17. cxb4 Bxa1 18. Nc4 Qxb4+ 19. Kf2 {Bruce,R (1911)-Broadway,D (2289) ICCF 2017 0-1 (47)}) 8. Bg3 Nc6 9. c3 Ne4 10. Bd3 Nxg3 11. hxg3 g4 (11... Bg7 12. O-O (12. Nbd2 d6 13. Nc4 Qc7 14. Rc1 Ne7 15. Nfd2 d5 16. Ne3 Bd7 17. b4 O-O-O 18. Nb3 Ba4 19. Qd2 Bxb3 20. axb3 Kb8 21. b5 f5 22. Kf1 Nc8 23. g4 fxg4 {Kain,T (2404)-Neubauer,R (2320) ICCF 2013 0-1 (30)}) 12... O-O 13. Re1 g4 14. Nh4 (14. Nh2 h5 15. Qd2 d5 16. Nf1 e5 17. dxe5 Nxe5 18. Bc2 Re8 {Yui Pineda,G (2268)-Cusicanqui,M ICCF 2007 1/2-1/2 (53)}) 14... Nxd4 15. Nd2 Nb5 16. Bxb5 Qxb5 17. Qxg4 Qg5 18. Qd1 d6 19. Nhf3 Qe7 20. Rc1 b6 21. Nd4 { 1-0 (21) Tkachenko,O-Popenkov,P ICCF 2013}) 12. Nfd2 (12. Nh4 h5 13. O-O d5 14. Qe2 Bg7 (14... Qc7 15. a4 Bd7 16. b4 Ne7 17. b5 Rc8 18. a5 Bh6 19. Re1 Bg5 20. Qb2 O-O 21. b6 axb6 22. axb6 Qc6 23. Ra5 {Ybarra,M-Mukherjee,S ICCF 2015 0-1 (47)}) (14... Bd7 15. b4 Qc7 16. Nd2 a5 17. b5 Ne7 18. c4 Bg7 19. cxd5 Bxd4 20. Rae1 Nxd5 21. Qe4 Bc3 22. Qxd5 Bxd2 23. Re2 Bb4 24. Qe4 Kf8 25. Rd1 Bc5 26. Bc4 {Belanoff,S (2214)-Weiner,J (2157) ICCF 2017 1-0 (40)}) 15. Nd2 Ne7 16. b4 a5 17. b5 a4 18. Rab1 Bd7 19. Rb4 O-O 20. Bc2 Rfc8 21. Qd3 Kf8 22. Re1 Rc7 23. Qe3 Rac8 {Enricci,J (2388)-Hill,G (2434) ICCF 2018 0-1 (68)}) (12. Ng1 Nxd4 13. Qxg4 Nc6 14. Nd2 d5 15. Ndf3 Bc5 16. Nh3 Bd7 17. O-O O-O-O 18. Qf4 Qc7 19. b4 Qxf4 20. Nxf4 Bd6 21. b5 Ne5 22. Nxe5 Bxe5 23. Rae1 Bf6 {Rocco Ruiz,J (2276) -Roy Laguens,A (2326) ICCF 2014 1/2-1/2 (50)}) 12... Rg8 13. Nc4 Qd8 14. Ne3 Qg5 15. Be2 {Metelmann,K (2296)-Kellam,J ICCF 2007 1-0 (49)}) (3... Be7 4. e3 ( 4. Nbd2 O-O (4... h6 5. Bxf6 Bxf6 6. e3 (6. e4 d6 7. e5 (7. Bd3 d5 8. e5 Be7 9. c3 c6 10. O-O O-O 11. h3 f6 12. Bg6 f5 13. Nh2 Rf6 14. exf6 Bxf6 15. Re1 Nd7 16. Rxe6 Nf8 17. Rxf6 Qxf6 18. Bh5 g6 {Algeri,B (2077)-Jimenez,J ICCF 2021 1-0 (44)}) 7... Be7 8. Bd3 b6 9. O-O Bb7 10. Qe2 O-O 11. c3 d5 12. Bc2 Ba6 13. Bd3 Bxd3 14. Qxd3 c5 15. dxc5 bxc5 16. Rfd1 Nc6 17. b3 Rb8 {Hilzinger,R-Avellán,G (2268) ICCF 2012 0-1}) 6... d5 7. c4 O-O 8. Qc2 g6 9. a3 b6 10. Bd3 Kg7 11. g4 Rg8 12. h4 Kf8 13. g5 Bg7 14. h5 gxh5 15. g6 fxg6 16. Bxg6 {Poelvoorde, H-Takahashi,Y (1478) ICCF 2019 1-0 (29)}) (4... d6 5. e4 Nbd7 (5... h6 6. Be3 O-O 7. h3 Nbd7 8. Bd3 c5 9. c3 b6 10. O-O Bb7 11. Bf4 cxd4 12. cxd4 e5 13. Bh2 Rc8 14. Rc1 Rxc1 15. Qxc1 exd4 16. Nxd4 Nc5 17. Qb1 {Platero Manteca,J (1867) -Piqueras Jiménez,M (1786) ICCF 2019 1/2-1/2 (43)}) 6. Bd3 O-O 7. Qe2 e5 8. c3 b6 9. O-O Bb7 10. Rfe1 Re8 11. Bxf6 Bxf6 12. d5 c6 13. dxc6 Bxc6 14. Nf1 Nc5 15. Rad1 Qd7 16. Ng3 {Laine,J (2254)-Mantu,E (1861) ICCF 2015 1/2-1/2 (40)}) ( 4... b6 5. e4 h6 6. Be3 O-O 7. h3 c5 8. c3 Nc6 9. Bd3 Bb7 10. O-O Qc7 11. Rc1 Rac8 12. Qe2 Rfd8 13. Rfe1 d6 14. Nh2 Nb8 15. Rcd1 Nbd7 16. Nhf1 {Illingworth, J (1773)-Ilascu C.,I (1840) ICCF 2019 1-0 (31)}) (4... Nc6 5. e3 (5. e4 h6 6. Be3 d6 7. h3 O-O 8. c3 Bd7 9. Bd3 a6 10. O-O Qc8 11. b4 b5 12. a4 Qb7 13. Qc2 Rfb8 14. Rfe1 e5 15. axb5 axb5 16. Nb3 exd4 {Santos,M (2420)-Maia,V (2402) ICCF 2007 1/2-1/2 (33)}) 5... h6 6. Bxf6 Bxf6 7. c3 O-O 8. Bd3 b6 9. Qc2 Bb7 10. O-O Re8 11. Rad1 Qe7 12. e4 Rad8 13. e5 Bg5 14. Ne4 d6 15. Rfe1 dxe5 16. Nexg5 {Rowley,M (1709)-Gaughan,J (1499) ICCF 2016 1-0 (25)}) (4... c5 5. dxc5 ( 5. e4 cxd4 6. e5 Ne4 7. Bxe7 Qxe7 8. Nxe4 Nc6 9. Nd6+ {1-0 (9) Walther,J (2238) -Schiebener,H (2028) ICCF 2010}) 5... Bxc5 6. e4 Be7 7. e5 Nd5 8. Bxe7 Qxe7 9. c4 Nf4 10. h4 Ng6 11. h5 Nf8 12. c5 d6 13. Ne4 d5 14. Nd6+ Kd8 15. Qa4 Nc6 16. Bb5 {Dreisch,J (2093)-Pooley,M (1916) ICCF 2016 1-0}) (4... Nd5 5. Bxe7 Qxe7 6. e4 Nb6 7. Bd3 O-O 8. O-O d5 9. e5 Bd7 10. Rc1 f6 11. Re1 f5 12. c4 Nxc4 13. Nxc4 dxc4 14. Bxc4 b5 15. Be2 c6 16. Nd2 {Johnson,V-Lain,F ICCF 2007 1-0 (31)}) 5. e3 (5. e4 d6 6. Bd3 Nfd7 7. O-O Bxg5 8. Nxg5 Qxg5 9. f4 Qe7 10. e5 dxe5 11. fxe5 c5 12. Bxh7+ Kxh7 13. Qh5+ Kg8 14. Rf3 f5 15. Rh3 Nf6 16. exf6 Qxf6 { Dunks,P (1868)-Wakeham,M (1532) ICCF 2016 0-1 (27)}) 5... h6 (5... d6 6. Bd3 Nbd7 7. O-O c5 8. c3 a6 9. a4 h6 10. Bh4 Rb8 11. Qe2 d5 12. Bg3 Ra8 13. h3 c4 14. Bc2 b6 15. e4 Bb7 16. e5 Nh7 17. Nh2 {Darnoko,D-Nuramni,S ICCF 2019 1-0 (41)}) 6. Bh4 a6 7. Bd3 Nc6 8. c3 d6 9. O-O e5 (9... Nd5 10. Bxe7 Qxe7 11. Rc1 e5 12. e4 Nf6 13. Re1 exd4 14. cxd4 Nb4 15. Bb1 b5 16. a3 a5 17. axb4 axb4 18. Qc2 g6 19. Qxc7 Qxc7 20. Rxc7 Rb8 21. Rec1 {Allen,J (1720)-Stone,D (1685) ICCF 2013 1-0 (32)}) 10. Bg3 Bg4 11. h3 Bxf3 12. Qxf3 Re8 13. Bc2 exd4 14. exd4 d5 15. Rfe1 Nb8 {Marten,G-Dumitrica,N ICCF 2016 1-0 (33)}) (4. Nc3 c5 5. e4 d5 6. e5 Nfd7 7. Bxe7 Qxe7 8. Nb5 Qd8 9. Nd6+ Kf8 10. Bb5 Qc7 11. O-O cxd4 12. Nxd4 Nxe5 13. Nxc8 Qxc8 14. Re1 Qc7 15. Nxe6+ fxe6 {Puusaari,A (1592)-Ruokamo,V ICCF 2011 0-1 (28)}) (4. a3 Nc6 5. e3 d6 6. Nc3 O-O 7. Be2 e5 8. dxe5 Nxe5 9. Nxe5 dxe5 10. Qxd8 Rxd8 11. O-O Bf5 12. Rfd1 Bxc2 13. Rxd8+ Rxd8 14. Rc1 Bb3 15. e4 h6 {Hardwick,M (1278)-Fletcher,A (1405) ICCF 2020 0-1 (44)}) (4. c3 h6 ( 4... Ne4 5. Bxe7 Qxe7 6. Nbd2 f5 7. e3 O-O 8. Bd3 d5 9. Qe2 b6 10. O-O a5 11. Rac1 Bb7 12. c4 c5 13. cxd5 exd5 14. Bb5 Na6 15. Ne5 Nc7 16. Nxe4 {Winter, M-Cheek,C ICCF 2014 1/2-1/2 (50)}) 5. Bxf6 Bxf6 6. g3 d5 7. e3 c5 8. Bd3 O-O 9. Bc2 Qb6 10. Qd3 g6 11. b3 Bd7 12. a4 Nc6 13. h4 cxd4 14. h5 dxc3 15. hxg6 Nb4 { Treeby,M (1485)-Lasaki,H ICCF 2020 0-1 (25)}) (4. Bxf6 Bxf6 5. c3 d5 6. e3 Nd7 7. Bd3 O-O 8. O-O g6 9. Nbd2 Bg7 10. Qc2 Nf6 11. Rfe1 b6 12. e4 dxe4 13. Nxe4 Bb7 14. Nxf6+ Qxf6 15. Be4 Bxe4 {Cunningham,B (1597)-Morton,P (1574) ICCF 2018 1/2-1/2}) (4. g3 c5 5. e3 Qb6 6. Bd3 cxd4 7. O-O dxe3 8. Nc3 exf2+ 9. Rxf2 Ng4 10. Ne4 Nxf2 11. Nxf2 Bc5 12. Ne5 Bxf2+ 13. Kh1 d6 14. Qf1 dxe5 15. Bb5+ Bd7 { Anderson,L (747)-Klimczak,J (2346) ICCF 2021}) 4... O-O (4... b6 5. c4 (5. Bd3 Bb7 (5... Ba6 6. c4 d5 7. Nbd2 Nbd7 8. Qe2 O-O 9. h4 dxc4 10. Nxc4 Bxc4 11. Bxc4 Bb4+ 12. Nd2 Qe8 13. Bd3 e5 14. O-O exd4 15. Nc4 dxe3 16. Nxe3 Bd6 17. Rae1 {Ong,A (1252)-Enoksson,B (1320) ICCF 2020 1/2-1/2 (65)}) 6. O-O (6. c4 h6 7. Bh4 g5 8. Bg3 g4 9. Ne5 h5 10. Bf1 h4 11. Bf4 d6 12. Nxg4 Nh5 13. f3 Nd7 14. h3 f5 15. Nf2 e5 16. Bh2 Bg5 17. Qe2 exd4 {Blair,D (2038)-Martinson,R ICCF 2008 0-1 (34)}) 6... c5 7. Nbd2 O-O 8. c3 Nc6 9. Re1 h6 10. Bh4 d5 11. Qe2 (11. Ne5 Nxe5 12. dxe5 Ne4 13. Bxe7 Qxe7 14. f4 Nxd2 15. Qxd2 f6 16. exf6 Rxf6 17. e4 Raf8 18. exd5 Bxd5 19. Be4 Qf7 20. g3 Bxe4 21. Rxe4 g5 22. Rae1 gxf4 { Simpson,W-Lambert,M (1932) ICCF 2019 1/2-1/2 (33)}) 11... Rc8 (11... g5 12. Bg3 Nh5 13. Ne5 Nxg3 14. hxg3 Nxe5 15. dxe5 Qe8 16. Bb5 Bc6 17. a4 Bxb5 {Marx,P (1927)-Fernández Díez,L (1911) ICCF 2017 1-0 (51)}) 12. Rad1 Ne4 (12... Nd7 13. Bxe7 Qxe7 14. e4 dxe4 15. Nxe4 cxd4 16. Nxd4 Nxd4 17. cxd4 Rfd8 18. Bb1 Bxe4 19. Bxe4 Nf6 20. Bf3 Qb4 21. a3 Qa4 22. Qe3 Rc2 23. b4 {Durandal,J (2030) -Aymard,M (2197) ICCF 2009 0-1 (44)}) 13. Bxe7 Nxe7 14. Bc2 Nxd2 15. Rxd2 c4 16. e4 b5 {Whaley,M (2328)-Bucur,M (2424) ICCF 2012 0-1 (69)}) (5. h4 h6 6. Bf4 Bb7 7. Nbd2 O-O 8. h5 c5 9. Be2 d6 10. c3 Qc7 11. Bg3 cxd4 12. exd4 Nbd7 13. Bd3 a6 14. Qe2 b5 15. Kf1 e5 16. Bf5 Rfe8 {Volkov,A (1831)-Broadway,D (2306) ICCF 2018 0-1 (41)}) 5... Bb7 (5... O-O 6. Nc3 h6 7. Bf4 Bb4 8. Bd3 Bb7 9. Nd2 d5 10. O-O c5 11. a3 Bxc3 12. bxc3 Qe7 13. Qc2 Rc8 14. Bg3 Nh5 15. cxd5 Nxg3 16. hxg3 Bxd5 17. Rfe1 {Manarin,F (1971)-Suihko,K (1980) ICCF 2019 1-0 (43)}) 6. a3 d6 7. Bd3 Nbd7 8. Nbd2 a5 9. Qc2 h6 10. Bxf6 Bxf6 11. O-O Qe7 12. Be4 Bxe4 13. Nxe4 O-O 14. Rfd1 g6 15. Rac1 Bg7 16. Ng3 {Ridout,P (1399)-Wilshusen, H (1355) ICCF 2020 0-1 (45)}) (4... h6 5. Bh4 (5. Bxf6 Bxf6 6. c4 c5 7. Nc3 cxd4 8. exd4 O-O 9. Bd3 Nc6 10. Be2 Qb6 11. Na4 Qd8 12. O-O a6 13. c5 Re8 14. Nb6 Rb8 15. Re1 d5 16. a3 Bd7 {Rowley,M (1752)-Reed,J (1557) ICCF 2015 1-0 (35) }) 5... Ne4 6. Bxe7 Qxe7 7. Nbd2 Nxd2 8. Nxd2 d5 9. Bd3 Nc6 10. c4 dxc4 11. Bxc4 O-O 12. O-O a6 13. Rc1 b5 14. Be2 Bb7 15. Bf3 Na5 16. Rc5 {Malbasic,L (1860)-Nilssen,T (1443) ICCF 2020 1-0 (41)}) 5. Bd3 (5. c4 c5 6. Nc3 cxd4 7. Nxd4 Qa5 8. Bh4 Nc6 9. Nb3 Qd8 10. Rc1 d6 11. Be2 e5 12. O-O Be6 13. Nd2 Qd7 14. Bxf6 Bxf6 15. Nde4 Be7 16. Nd5 Rad8 {Döner,M-Malbasic,L ICCF 2014 1-0 (41) }) (5. Be2 h6 (5... b6 6. c4 Bb7 7. h3 d5 8. Nc3 dxc4 9. Bxc4 Nbd7 10. O-O Ne4 11. Nxe4 Bxe4 12. Bf4 c5 13. Qe2 Bf6 14. Rad1 Bd5 15. Bxd5 exd5 16. Bd6 Re8 17. dxc5 {Cooper,R-Wakeham,M (1840) ICCF 2011 1-0 (35)}) 6. Bxh6 gxh6 7. O-O c5 8. a3 b6 9. dxc5 bxc5 10. Nc3 d5 11. Na2 Qb6 12. Nc1 Qxb2 13. Nd3 Qc3 14. Qc1 c4 15. Nf4 e5 16. Nh3 Rd8 {Hardwick,M (1161)-Roy,R ICCF 2019 0-1 (47)}) 5... h6 ( 5... d6 6. O-O b6 7. c3 Bb7 8. Nbd2 Nbd7 9. Qc2 h6 10. Bh4 Bxf3 11. Nxf3 g6 12. Rad1 Nh7 13. Bxe7 Qxe7 14. h3 f5 15. Rfe1 Nhf6 16. e4 Qf7 17. exf5 { Maisonneuve,L (1591)-Rivollier,F (1622) ICCF 2016 1-0 (38)}) (5... Nc6 6. O-O b6 7. c3 Bb7 8. Nbd2 d6 9. Qc2 h6 10. Bh4 Qd7 11. e4 Rac8 12. e5 dxe5 13. dxe5 Nd5 14. Bxe7 Qxe7 15. Rad1 Rfd8 16. g3 a6 17. Be4 {Arteaga Hernández,L (1817) -Planella Zabala,I ICCF 2013 1-0}) 6. Bxf6 Bxf6 7. O-O c5 8. Nbd2 d5 9. c3 Nd7 10. h3 (10. Rc1 b6 11. Re1 Bb7 12. Bb1 Rc8 13. Nf1 Qc7 14. Qd3 g6 15. Ng3 Rfd8 16. h4 h5 17. Nxh5 gxh5 18. Qh7+ Kf8 19. Ng5 Bxg5 20. hxg5 Ke7 21. g6 Rf8 { Zaitsev,V-Kolek,P (2205) ICCF 2017 0-1 (29)}) 10... Qb6 11. Qc2 Rb8 12. Kh1 Qc7 13. a4 Rd8 14. a5 Be7 15. Kg1 {Matyukhin,S (2495)-Konovalenko,A (2110) ICCF 2021 (34)}) (3... b6 4. e4 (4. e3 Bb7 5. c3 Be7 6. Nbd2 O-O 7. Qc2 (7. Bd3 d5 8. O-O Ne4 9. Bxe7 Qxe7 10. Qc2 f5 11. a4 a5 12. Ne5 Nxd2 13. Qxd2 Nd7 14. Nf3 c5 15. Bb5 Nf6 16. Qe2 c4 17. b3 cxb3 18. Rfb1 Ne4 {Burg,J-Schulz,B (1923) ICCF 2012 1-0 (25)}) 7... d5 8. Ne5 Ne4 9. Bxe7 Qxe7 10. Bd3 f5 11. Ndf3 Nd7 12. Nxd7 Qxd7 13. Ne5 Qe7 14. Bb5 c5 15. O-O a6 {Rowley,M (1709)-Guy,D (1726) ICCF 2016 1/2-1/2 (29)}) 4... h6 5. Bxf6 Qxf6 6. Nbd2 (6. Bd3 Bb7 7. Qe2 (7. Nc3 Bb4 8. Qd2 c5 9. dxc5 Bxc3 10. bxc3 O-O 11. O-O Rc8 12. cxb6 axb6 13. Rfb1 Qd8 14. Qf4 d6 15. e5 Rxc3 16. a4 Ra5 17. exd6 Nd7 18. Rb5 Rc5 {Zupec, J-Debevec,B ICCF 2005 0-1}) (7. O-O c5 (7... d5 8. Nbd2 c5 9. Bb5+ Nd7 10. Ne5 Bc8 11. exd5 exd5 12. Qg4 Qe7 13. Rfe1 h5 14. Qf5 g6 15. Nxg6 fxg6 16. Rxe7+ Bxe7 17. Qxd5 Rb8 {Palladino,M (2066)-Di Pietro,R (1612) ICCF 2014 1-0}) 8. d5 exd5 9. exd5 Bxd5 10. Re1+ Be6 11. Nc3 Nc6 12. Be4 Rc8 13. Rb1 Qd8 14. Bxc6 Rxc6 15. Ne5 Rc8 16. f4 g6 17. Qf3 Bg7 18. Nb5 O-O {Manarin,F (1971)-Dam,J (2070) ICCF 2019 1/2-1/2}) 7... c5 (7... d6 8. O-O Nd7 9. Ba6 Bxa6 10. Qxa6 Qd8 11. Qc4 Be7 12. Nc3 O-O 13. d5 e5 14. h3 a6 15. a4 g6 16. Rfd1 Kg7 17. Ne1 Nc5 18. Nd3 Qc8 19. Rab1 {Deforel,J (2059)-Dam,J (1683) ICCF 2017 1/2-1/2 (44)}) 8. c3 cxd4 9. Nxd4 Bc5 10. Nb3 Be7 11. e5 Qg5 12. g3 h5 13. Rf1 Nc6 14. f4 Qg4 15. Qg2 h4 16. Be2 Qf5 17. Nd4 Qg6 {Bruce,R (1941)-Schulz,B (1860) ICCF 2019 0-1 (46)}) (6. a3 Bb7 7. Nc3 Nc6 8. Qd2 O-O-O 9. O-O-O g5 10. h3 Be7 11. Bc4 h5 12. d5 g4 13. hxg4 hxg4 14. dxc6 dxc6 15. e5 Qg7 16. Rxh8 Qxh8 17. Qe3 {Brisson,P (2043)-Roblette,Y ICCF 2016 1/2-1/2}) 6... Bb7 7. e5 Qg6 8. g3 Bb4 9. c3 Be7 10. Bg2 Nc6 11. O-O O-O-O 12. Nc4 h5 13. Qa4 h4 14. Nfd2 a6 15. Qd1 {Leiva Antúnez,H-Schilleci,C (1751) ICCF 2020 0-1 (27)}) (3... Bb4+ 4. c3 (4. Nbd2 Nc6 5. c3 Be7 6. e4 Nxe4 7. Bxe7 Qxe7 8. Nxe4 O-O 9. Bd3 d5 10. Ng3 {1-0 (10) Poelvoorde,H-Stark,P ICCF 2020}) 4... Be7 (4... Ba5 5. e3 d5 6. Nbd2 O-O 7. Bd3 Nbd7 (7... Nc6 8. Ne5 Nb8 9. f4 Nbd7 10. Nxd7 Bxd7 11. e4 dxe4 {0-1 (11) Anil, A (2090)-Scott,R (1633) ICCF 2012}) 8. O-O c5 9. Ne5 c4 10. Bc2 Qc7 11. f4 h6 12. Bh4 b5 13. a3 Ne8 14. Be7 Nxe5 15. Bxf8 Kxf8 16. fxe5 {Hailparn,M (1984) -Scott,R (1548) ICCF 2009 1-0 (35)}) 5. Nbd2 (5. e3 h6 6. Bh4 d6 7. Qc2 g5 8. Bg3 g4 9. Nfd2 h5 10. Bh4 Nc6 11. Nb3 Bd7 12. N1d2 Nd5 13. Bxe7 Qxe7 14. a3 O-O-O 15. c4 Nf6 16. Bd3 h4 {Arteaga Hernández,L-Marchello,M ICCF 2013 0-1 (36)}) 5... d5 6. e3 O-O 7. Bd3 Ng4 8. Bxe7 Qxe7 9. h3 Nf6 10. O-O Nc6 11. Re1 e5 12. dxe5 Nxe5 13. Nxe5 Qxe5 14. Nf3 Qd6 15. Rc1 {Davis,J (1497)-Gibson,C ICCF 2013 1-0 (46)}) (3... Nc6 4. e4 (4. e3 h6 5. Bh4 Be7 6. Nc3 O-O 7. a3 Nd5 8. Nxd5 exd5 9. Bg3 d6 10. Bd3 Bf6 11. O-O Ne7 12. Bh4 g5 13. Bg3 c6 14. h3 Bf5 15. c4 dxc4 {Vasile,C (2383)-Rihtaric,I (2007) ICCF 2008 1-0 (66)}) 4... h6 5. Bxf6 Qxf6 6. Bc4 g5 7. Nc3 g4 8. e5 Qe7 9. Ng1 Qb4 10. Qd3 b5 11. Bxb5 Nxd4 { 0-1 (11) Bravo Abolafia,L-Calonge González,A ICCF 2008}) (3... g6 4. Nbd2 Bg7 5. Ne4 d5 6. Nxf6+ Bxf6 7. Bxf6 Qxf6 8. e3 O-O 9. c3 Nd7 10. Be2 c6 11. h4 Re8 12. g4 e5 13. g5 Qe7 14. dxe5 Nxe5 15. Qd4 {Santamaría Navarro,F (2030) -Sifré Calafat,F (1778) ICCF 2005 1/2-1/2 (43)}) 4. e3 (4. e4 cxd4 (4... Qb6 5. Nbd2 (5. b3 Nxe4 6. Be3 d5 7. Be2 Bd6 8. O-O O-O 9. Nbd2 Nxd2 10. Qxd2 cxd4 11. Bxd4 Qc7 12. a3 Nc6 13. Bc3 Bd7 14. Rfe1 Rac8 15. Qg5 e5 16. h4 h6 { Vazquez Gallardo,M (1717)-Martínez Camacho,V (1448) ICCF 2019 0-1}) 5... cxd4 6. e5 Nd5 7. Nc4 Qb4+ 8. Bd2 Qc5 9. Bd3 Nc6 10. a3 b5 11. b4 Nc3 12. Bxc3 Qd5 13. Qe2 Bb7 14. Bd2 f6 15. h3 Rc8 16. Nd6+ {Aulino,G-Caliò,M ICCF 2011 1/2-1/ 2 (50)}) (4... h6 5. Bxf6 (5. Bh4 Be7 6. Nc3 O-O 7. Be2 d5 8. dxc5 Nxe4 9. Nxe4 Bxh4 10. Nxh4 Qxh4 11. Ng3 Qb4+ 12. c3 Qxc5 13. O-O Nc6 14. Qd2 b5 15. Qf4 e5 16. Qh4 Be6 {Hughes,D (1693)-Harris,S ICCF 2015 1-0}) 5... Qxf6 6. e5 Qd8 7. d5 exd5 (7... Qb6 8. Nc3 Qxb2 9. Nb5 Qb4+ 10. Nd2 Kd8 11. Bc4 a6 12. Rb1 Qa5 13. Nd6 Bxd6 14. exd6 b5 15. O-O Bb7 16. Ne4 Kc8 17. Nxc5 {Zhdanenia,K (2166) -Becker,C (2168) ICCF 2013 1-0 (44)}) (7... d6 8. Nc3 dxe5 9. Bb5+ Bd7 10. dxe6 {1-0 (10) Arteaga Hernández,L (1839)-Priest,S (1845) ICCF 2014}) 8. Qxd5 Be7 ( 8... Qb6 9. Nbd2 Be7 10. O-O-O O-O 11. Ne4 Qc6 12. Nd6 Bxd6 13. Qxd6 b6 14. Bc4 Qxd6 15. Rxd6 Nc6 16. Rhd1 Rb8 17. Bb5 Re8 18. e6 fxe6 19. Bxc6 {Nestianu,R (2186)-Secrieru,I (1879) ICCF 2012 1-0 (29)}) 9. Nc3 O-O 10. O-O-O Nc6 11. Qe4 d6 12. Bc4 Na5 13. Bd3 g6 14. h4 h5 15. Qf4 Kg7 16. Be2 {Nüesch,G-Haller,P ICCF 2007 1-0 (41)}) 5. e5 (5. Qxd4 Nc6 6. Qe3 (6. Qa4 Bc5 7. Qb5 d6 8. Nbd2 a6 9. Qe2 O-O 10. Nb3 Ba7 11. Rd1 h6 12. Bh4 e5 13. c3 Be6 14. Nfd2 Qe7 15. Bxf6 Qxf6 16. Qf3 Qh4 17. g3 Qe7 {Banks,G-Geana,D (2165) ICCF 2016 0-1}) (6. Qd3 h6 7. Bh4 Qb6 8. Bxf6 gxf6 9. Qb3 Bc5 10. Qxb6 Bxb6 11. c3 d5 12. exd5 exd5 13. Bb5 a6 14. Ba4 Kf8 15. O-O Ne5 16. Nxe5 fxe5 17. Na3 Be6 {Littke,H (2283) -Johansson,B (2329) ICCF 2013 0-1 (41)}) 6... d5 7. e5 Qa5+ (7... h6 8. Bxf6 gxf6 9. Bb5 Rg8 10. Nc3 Rxg2 11. O-O-O Bd7 {0-1 (11) Arteaga Hernández,L (2002)-Sifré Calafat,F (1966) ICCF 2015}) 8. c3 Ng4 9. Qe2 Qc7 10. Nbd2 Bc5 11. Bh4 Ngxe5 12. Bg3 Bd6 13. Nxe5 Nxe5 14. Nf3 Nc6 15. Qc2 e5 16. Bb5 f6 { Romero Díaz,C-Jácome Jiménez,A ICCF 2018 0-1}) (5. Bxf6 Qxf6 6. Qxd4 Qxd4 7. Nxd4 Nc6 8. c3 Nxd4 9. cxd4 Bb4+ 10. Nc3 O-O 11. a3 Ba5 12. Rd1 d6 13. d5 e5 14. Bd3 a6 15. Rc1 Bd7 16. Ke2 g6 {Becker,C (2136)-Hagen,T (2423) ICCF 2012 1/ 2-1/2 (43)}) 5... h6 6. Bh4 (6. Bc1 Nd5 7. Nxd4 Qc7 8. f4 a6 9. c4 Nb6 10. Nc3 d6 11. Qe2 dxe5 12. Qxe5 Qxe5+ 13. fxe5 Bb4 14. Bd2 N6d7 15. a3 Ba5 16. Be2 Nxe5 17. b4 Bc7 {Becker,C (2136)-Rolle,H (2207) ICCF 2012 1/2-1/2 (44)}) (6. exf6 hxg5 7. Nxg5 Qa5+ 8. Qd2 Qe5+ 9. Be2 Nc6 10. O-O Qxh2# {0-1 (10) Dunham, D-Jamison,L (1767) ICCF 2016}) 6... g5 7. exf6 (7. Bg3 Nh5 8. Qxd4 Nc6 9. Qe4 Qb6 10. Nbd2 Qxb2 11. Rb1 Qxa2 12. Bb5 Qd5 13. O-O Nxg3 14. fxg3 Bg7 15. Bxc6 Qxc6 16. Qe3 d5 17. exd6 Qxd6 18. Ne4 Qe7 {Lagergren,H (1969)-Antonone,R ICCF 2005 0-1 (50)}) 7... gxh4 8. Qxd4 Nc6 9. Qxh4 Qb6 10. b3 Rg8 11. Nbd2 (11. c3 d5 12. h3 e5 13. Nbd2 Be6 14. Rc1 O-O-O 15. g4 e4 16. Nd4 Nxd4 17. cxd4+ Kb8 18. Qg3+ Bd6 19. Qe3 Rc8 20. Rxc8+ Rxc8 21. Be2 Qc7 22. Bd1 Bf4 {Rumyantsev,V (2019)-Rosenheim,K (2410) ICCF 2012 0-1 (42)}) 11... d5 12. c4 Bd7 (12... Bc5 13. Rc1 (13. a3 a5 14. Ra2 Bd7 15. h3 O-O-O 16. g4 h5 17. g5 dxc4 18. Bxc4 Nd4 19. O-O Bc6 20. Ne5 Nf5 {0-1 (20) Sindelár,F (1891)-Daróczy,S (2082) ICCF 2017}) 13... Bd7 14. g4 Bb4 15. Be2 Qa5 16. h3 e5 17. cxd5 Nd4 18. Qxh6 Qxd5 19. Kf1 Nxe2 20. Kxe2 Bb5+ 21. Nc4 Bc5 22. Qh7 Rg6 23. Ng5 Rxg5 24. Rhd1 { Marturano,M (2011)-Perini,G (2261) ICCF 2015 0-1 (55)}) 13. a3 Qa5 14. g3 Nb4 15. Ke2 dxc4 {Greninger,H-Fees,D (2196) ICCF 2016 1/2-1/2 (51)}) (4. c3 h6 ( 4... cxd4 5. cxd4 (5. Qxd4 Nc6 6. Qd1 d5 7. e3 Be7 8. Bd3 e5 9. Bxf6 Bxf6 10. Bb5 a6 11. Be2 O-O 12. O-O Be6 13. Nbd2 Qb6 14. Qb3 Qc7 15. Qc2 e4 16. Ne1 Be5 {Stuart,P-Ragan,A ICCF 2009 0-1 (33)}) 5... Qb6 (5... Be7 6. e3 b6 (6... Ne4 7. Bxe7 Qxe7 8. Bd3 Qb4+ 9. Nbd2 Nxd2 10. Qxd2 Nc6 11. O-O d5 12. Rac1 O-O 13. Rc3 Bd7 14. Qc2 h6 15. a3 Qd6 16. e4 dxe4 17. Bxe4 Nxd4 18. Nxd4 {Flew,B (1660) -Ellison,C ICCF 2014 1-0 (58)}) 7. Bd3 Ba6 8. Bxf6 Bxf6 9. Nc3 O-O 10. Qc2 Bxd3 11. Qxd3 d6 12. O-O Nd7 13. Rac1 Rc8 14. Nb5 Rxc1 15. Rxc1 Qb8 16. Qa3 Be7 17. Qxa7 {Perelyakhin,M-Davis,J (1204) ICCF 2019 1-0}) 6. Nc3 (6. Qc2 Nc6 7. Bxf6 gxf6 8. e3 Qa5+ 9. Nfd2 f5 10. Nc3 a6 11. Nb3 Qc7 12. Rc1 d5 13. Be2 Bd7 14. Qd1 Bd6 15. g3 O-O 16. O-O Rfc8 17. a3 Be8 {Tosi,F (2306)-Mut Company,G ICCF 2010 1/2-1/2 (75)}) 6... Nc6 7. Rb1 d5 8. e3 Bd7 9. Bd3 Nb4 10. Be2 Nc6 11. O-O Bd6 12. b4 O-O 13. b5 Ne7 14. Na4 Qd8 15. Bd3 Rc8 16. Qb3 {Tosi,F (2411) -Önder,E ICCF 2006 1/2-1/2 (36)}) (4... Nc6 5. Nbd2 cxd4 6. cxd4 Qb6 7. e3 Qxb2 8. Be2 Nd5 9. O-O Nc3 10. Qe1 f6 11. Bf4 d5 12. a4 Nxe2+ 13. Qxe2 Qb4 14. Rfc1 Qe7 15. Bg3 Qd7 16. Qb5 {Domenche Redondo,F (1884)-García Castilla,M ICCF 2016 0-1 (45)}) (4... Qb6 5. Nbd2 (5. Qc2 Nc6 6. e3 Be7 7. Nbd2 d5 8. Bd3 (8. dxc5 Bxc5 9. Bxf6 gxf6 10. Be2 Bd7 11. O-O f5 12. a3 Be7 13. b4 Bf6 14. Rac1 O-O 15. c4 Ne7 16. cxd5 Nxd5 17. e4 Nf4 18. Nc4 Qa6 19. Rfe1 Ba4 {Kolanek, R (2508)-Kozlowski,W (2470) ICCF 2006 1/2-1/2 (46)}) 8... Bd7 9. O-O c4 10. Be2 h6 11. Bh4 Rc8 12. b3 cxb3 13. axb3 a6 14. c4 dxc4 15. bxc4 Nd8 16. Ne5 Bc6 { Schmoll,F-Nossein,F (1705) ICCF 2010 1-0 (29)}) (5. Qb3 Nc6 6. Bxf6 (6. Qxb6 axb6 7. Bxf6 gxf6 8. Nbd2 d5 9. e3 Rg8 10. a3 f5 11. Rb1 c4 12. g3 f6 13. Bg2 Bd6 14. Ng1 Ne7 15. Nh3 Bd7 16. Nf4 Kf7 17. h3 Bc6 {Tavinski,S (2127)-Horchler, P (2120) ICCF 2008 0-1 (63)}) 6... gxf6 7. e3 Qxb3 8. axb3 Rg8 9. g3 d5 10. Bd3 e5 11. Bxh7 Rh8 12. Bc2 Bh3 13. Nbd2 cxd4 14. exd4 Rc8 15. dxe5 fxe5 16. b4 a6 {Darnoko,D-Taylor,K (1951) ICCF 2019 1/2-1/2 (37)}) 5... Qxb2 6. Nc4 Qb5 7. e4 Qc6 8. d5 Qc7 9. d6 Qc6 10. e5 Nd5 11. Bd2 b6 12. Na3 g6 13. h4 h5 14. c4 Nb4 15. Nb5 Qe4+ 16. Be2 {Kurbasov,S (2288)-Rudykh,S (2079) ICCF 2009 1/2-1/2 (74)} ) (4... d5 5. Bf4 (5. Nbd2 cxd4 6. Nxd4 (6. cxd4 Be7 7. e3 Nc6 8. Bd3 h6 9. Bh4 O-O 10. O-O Bd7 11. a3 a6 12. Rc1 Rc8 13. Qb3 g5 14. Bg3 Nh5 15. Rfd1 f5 16. Be5 g4 17. Ne1 Nxe5 {Bailey,K (2238)-Askelöf,P (2200) ICCF 2013 1/2-1/2 (30)}) 6... Be7 7. e3 O-O 8. N2f3 Nc6 9. Bd3 Ne4 10. Bxe7 Qxe7 11. Nxc6 bxc6 12. Qc2 f5 13. Ne5 Qd6 14. f4 Qc5 15. Qe2 Nxc3 16. Rc1 Nxe2 {Zondervan,F (1401) -Enoksson,B (1320) ICCF 2020 1-0 (29)}) 5... cxd4 6. cxd4 Qb6 7. Qc2 Bd7 8. e3 Bb4+ 9. Nc3 Bb5 10. Bxb5+ Qxb5 11. Qe2 Bxc3+ 12. bxc3 Qxe2+ 13. Kxe2 Nc6 14. Rhc1 Na5 15. Nd2 Rc8 16. Kd3 {Dutra,A (2465)-Mootamri,S (2317) ICCF 2013 1-0 (75)}) 5. Bxf6 Qxf6 (5... gxf6 6. e3 Qb6 7. Qb3 Nc6 8. Nbd2 d5 9. Qxb6 axb6 10. Bb5 Bd6 11. O-O Ke7 12. e4 cxd4 13. cxd4 Bf4 14. exd5 exd5 15. Nb3 Bg4 16. Ne1 h5 17. g3 {Winter,M-Beveridge,C (2016) ICCF 2013 0-1 (34)}) 6. e4 (6. e3 d5 7. Bb5+ Bd7 8. Bxd7+ Nxd7 9. Nbd2 Bd6 10. Qc2 O-O 11. O-O Rfc8 12. Rac1 cxd4 13. Nxd4 e5 14. Nf5 Bf8 15. Ng3 Rc7 16. Qf5 Qa6 17. a3 Rd8 {Shtrikman,R (1547) -Salzmann,S (2344) ICCF 2021 0-1 (29)}) 6... cxd4 (6... Nc6 7. d5 (7. e5 Qd8 8. Nbd2 (8. Be2 d5 9. exd6 cxd4 10. Nxd4 Qxd6 11. O-O Bd7 12. Na3 a6 13. Nxc6 Bxc6 14. Nc2 O-O-O 15. Nd4 Qc7 16. Bf3 Bd7 17. Re1 Kb8 18. Qb3 g5 {Ramos Verdú,J (1994)-Spicer,C ICCF 2011 0-1 (39)}) 8... cxd4 9. cxd4 d5 10. a3 Qb6 11. Qb3 Nxd4 12. Nxd4 Qxd4 13. Bb5+ Kd8 14. Nf3 Qb6 15. Qa4 a6 16. Bd3 Qxb2 17. O-O Bd7 18. Qd1 Qc3 {Brotherton,T (1793)-Bennett,P (2172) ICCF 2010 0-1 (33)}) 7... Ne5 8. Be2 Nxf3+ (8... Bd6 9. dxe6 Qxe6 10. Nxe5 Qxe5 11. Nd2 Bc7 12. Bc4 b5 13. Bd5 Rb8 14. g3 O-O 15. f4 Qf6 16. O-O d6 17. a4 b4 18. Rc1 bxc3 19. bxc3 Bh3 20. Re1 {Starodubtsev,V (2236)-Skirka,V (1985) ICCF 2017 1-0 (61)}) (8... Ng6 9. Na3 exd5 10. exd5 Bd6 11. Nd2 Bb8 12. Ne4 Qe5 13. Nxc5 O-O 14. Nc4 Qg5 15. g3 d6 16. Nb3 Bh3 17. Qd2 Qxd2+ 18. Kxd2 Bg2 19. Rhe1 Bxd5 20. Nd4 {Rodi Maletich,L (2158)-Pietrobono,A (2213) ICCF 2006 1/2-1/2 (45)}) 9. Bxf3 exd5 ( 9... d6 10. O-O Be7 11. Qc2 O-O 12. Nd2 Bd7 13. Bg4 Qg6 14. Bh3 h5 15. f4 Qh6 16. a4 b5 17. axb5 {Galvany Vilá,J (1751)-Domenche Redondo,F (1722) ICCF 2018 1/2-1/2}) (9... e5 10. O-O Be7 11. Nd2 O-O 12. a4 d6 13. Bg4 {1-0 (13) Hrdý,R (2333)-Ertl,L (2308) ICCF 2011}) 10. Qxd5 d6 11. Na3 Be7 12. O-O O-O 13. Nc2 Rb8 14. Ne3 b5 15. Qd3 Be6 16. Nd5 Qg5 17. a3 Bd8 18. Rfd1 {Winter,M-Chekmasov, S (2380) ICCF 2013 0-1 (38)}) (6... a6 7. Be2 d6 8. dxc5 dxc5 9. Nbd2 Nd7 10. O-O Qf4 11. a4 Be7 12. a5 O-O 13. Bd3 Rd8 14. Qe2 Qb8 15. Nc4 b5 16. axb6 Nxb6 17. Na5 Qc7 18. e5 {Poletaev,V (2016)-Shchebenyuk,R (2028) ICCF 2021 1/2-1/2 (34)}) (6... d5 7. Bb5+ (7. Bd3 cxd4 8. cxd4 dxe4 9. Bxe4 Bd6 10. O-O O-O 11. Nbd2 Nc6 12. Bxc6 bxc6 13. Ne4 Qe7 14. Rc1 Rb8 15. Qc2 Bf4 16. Rcd1 e5 17. Nxe5 Bf5 18. Rfe1 Bxe5 {Hrdý,R (2333)-Canibal,J (2293) ICCF 2011 1/2-1/2}) 7... Bd7 8. Qa4 a6 9. Bxd7+ Nxd7 10. exd5 exd5 11. O-O O-O-O 12. b4 Nb6 13. Qc2 cxb4 14. cxb4+ Kb8 15. Qb3 Bd6 16. Nc3 g5 17. Rae1 Qf5 18. Nd1 {Pérez Ferrís,M-Glaser, K (2256) ICCF 2010 1/2-1/2 (48)}) (6... Qg6 7. Qd3 (7. Bd3 Qf6 8. O-O Qd8 9. Qe2 cxd4 10. cxd4 Be7 11. Nc3 d6 12. Rfd1 a6 13. Rac1 Nd7 14. e5 d5 15. Ne1 Bg5 16. Rc2 Nb8 17. Qg4 h5 18. Qg3 Nc6 {Illingworth,J (1905)-Muljadi,P (2409) ICCF 2020 (50)}) 7... cxd4 8. Nxd4 Be7 9. Nb5 Na6 10. Nd2 Nc5 11. Qc2 O-O 12. b4 Na6 13. O-O-O Qf6 14. Kb1 d5 15. Nf3 g6 16. exd5 exd5 17. Qd2 Bd7 18. Nbd4 { Batchelor,P (2182)-Thompson,B (2292) ICCF 2014 0-1 (35)}) 7. cxd4 Bb4+ (7... d6 8. Nc3 (8. b4 Qd8 9. Bc4 Nd7 10. d5 e5 11. Nbd2 Be7 12. O-O O-O 13. Ne1 Bf6 14. a4 a5 15. b5 Nc5 16. h3 Bd7 17. f3 Bg5 18. Nb3 Be3+ 19. Kh2 Rc8 {Ridout,P (1314)-Soar,T (1610) ICCF 2021 0-1 (34)}) 8... Qd8 9. Bd3 Be7 10. Qe2 O-O 11. Rd1 Nd7 12. O-O a6 13. e5 d5 14. g4 b5 15. Ne4 Bb7 16. Ng3 b4 17. Kh1 Rc8 18. g5 hxg5 19. Nh5 {Wharrier,J (2434)-Starodubtsev,V (2346) ICCF 2019 1-0 (34)}) 8. Nc3 Bxc3+ (8... O-O 9. Rc1 (9. Bd3 Nc6 (9... d6 10. e5 dxe5 11. dxe5 Qe7 12. O-O Bxc3 13. bxc3 b6 14. Qe2 Bb7 15. Rad1 Nd7 16. Be4 Bxe4 17. Qxe4 Nc5 18. Qb4 Rfd8 19. Rd4 Qc7 20. Rfd1 Rxd4 {Mataix Arbona,C (1807)-Silin,V (2303) ICCF 2013 1/2-1/2 (58)}) 10. e5 Qe7 11. O-O d6 12. Qe2 d5 13. Bc2 f5 14. exf6 gxf6 15. Rad1 Qg7 16. Rd3 f5 17. Re1 Rf6 18. Ba4 Rg6 19. g3 f4 20. Kh1 fxg3 { Santos Etxepare,A (1557)-Wesche,T (1868) ICCF 2008 1/2-1/2 (42)}) 9... d6 (9... Qg6 10. Bd3 Qxg2 11. Rg1 Qh3 12. a3 Bxc3+ 13. Rxc3 Nc6 14. Qd2 d5 15. Bc2 Qh5 16. Ne5 Nxe5 17. dxe5 dxe4 18. Rcg3 g6 19. Qf4 Kh7 20. Rg4 b6 21. Rh4 {Garau,B (2288)-Kravetsky,B (2091) ICCF 2014 1-0 (27)}) 10. Be2 (10. a3 Ba5 11. e5 dxe5 12. dxe5 Qe7 13. Qa4 Bxc3+ 14. Rxc3 Bd7 15. Qf4 Rd8 16. Be2 Bc6 17. O-O Bd5 18. Rfc1 Nc6 19. Qe3 a5 20. Ne1 Rab8 21. f4 Rdc8 {Wojtyra,S (2366)-Terreaux,G (2410) ICCF 2013 1/2-1/2 (28)}) (10. e5 Qe7 11. Bd3 dxe5 12. dxe5 Bd7 13. O-O Rd8 14. Qe2 Bc6 15. a3 Ba5 16. b4 Bb6 17. Be4 Bxe4 18. Nxe4 {Salminen,J (2020) -Reynolds,C (1967) ICCF 2017 1/2-1/2 (33)}) 10... Nc6 11. O-O Ba5 12. Bb5 Bb6 13. Bxc6 bxc6 14. e5 Qd8 15. exd6 Qxd6 16. Na4 Ba6 17. Re1 Rfd8 18. Nc5 Bxc5 19. Rxc5 Qxc5 20. dxc5 {Costa Trillo,V (2279)-Liushnin,K (2313) ICCF 2015 1/ 2-1/2}) (8... Nc6 9. Rc1 (9. e5 Qd8 10. Bd3 d6 11. exd6 Qxd6 12. O-O O-O 13. a3 Ba5 14. b4 Bb6 15. d5 Nd4 16. dxe6 Bxe6 17. Rc1 Rad8 18. Nxd4 Qxd4 19. Bb1 Bc4 20. Qxd4 Rxd4 {Nurmi,R (1759)-Howard,C ICCF 2015 0-1 (38)}) 9... O-O 10. a3 Ba5 11. Be2 d6 12. O-O a6 13. Re1 Bd7 14. b4 Bb6 15. d5 Nd4 16. Na4 Bxa4 17. Qxa4 Rac8 18. Qd1 Nxf3+ 19. Bxf3 Qb2 20. Rxc8 {Hall,G-Shannon,P (1934) ICCF 2017 1/ 2-1/2 (27)}) 9. bxc3 d6 10. e5 Qe7 11. exd6 Qxd6 12. Bd3 O-O 13. O-O Bd7 14. Ne5 Nc6 15. f4 Ne7 {Maccapan,F (2165)-Viviani,E ICCF 2011 0-1 (42)}) (4. Nc3 cxd4 (4... Qb6 5. Rb1 d5 6. e3 Nc6 7. dxc5 Bxc5 8. Bd3 Be7 9. O-O O-O 10. Qe2 h6 11. Bh4 Rd8 12. h3 Bd7 13. a3 Rac8 14. Bg3 a6 15. e4 d4 16. Na2 {Ryska,J (2174)-Splíchal,S (2197) ICCF 2009 1/2-1/2}) 5. Qxd4 (5. Nxd4 h6 (5... d5 6. e4 Bb4 (6... dxe4 7. Ndb5 Be7 8. Qxd8+ Kxd8 9. O-O-O+ Bd7 10. Bxf6 gxf6 11. Nxe4 a6 12. Ned6 axb5 13. Nxf7+ Ke8 14. Nxh8 Kf8 15. Kb1 Kg7 16. Bd3 Kxh8 17. Rhe1 Ra6 18. Be4 {Kokorin,V (2179)-Rauduvè,A (2323) ICCF 2014 0-1 (75)}) 7. e5 h6 8. Bd2 Bxc3 9. Bxc3 Ne4 10. Qg4 O-O 11. Bb4 Re8 12. c3 Qb6 13. f3 Nc6 14. fxe4 Nxb4 15. Qf4 Re7 16. g4 dxe4 17. Qxe4 {Buchaillot,L (2218)-Magallanes,F ICCF 2005 0-1 (77)}) (5... Bb4 6. Qd2 d5 7. e3 h6 8. Bf4 Ne4 9. Qd3 Qe7 10. Nde2 e5 11. Bg3 Bf5 12. Qb5+ Nc6 13. O-O-O a6 14. Qb6 Ba5 15. Qxb7 Qxb7 16. Nxe4 Bxe4 17. f3 {Weggen,R (1745)-Faber,K (2114) ICCF 2016 0-1}) 6. Bxf6 (6. Bh4 Qb6 (6... Be7 7. Ndb5 d5 8. Bg3 O-O 9. Nc7 d4 10. Nxa8 dxc3 11. Qxd8 Rxd8 12. bxc3 Ne4 13. Rd1 Nxg3 14. Rxd8+ Bxd8 15. hxg3 b6 16. f3 Bb7 17. Nxb6 Bxb6 18. e4 {Bruce,R (2007)-Jefferson,N (2211) ICCF 2018 0-1 (59)}) 7. Qd2 (7. Bxf6 gxf6 8. Nb3 f5 9. e3 Nc6 10. Qh5 d5 11. Be2 Bd7 12. O-O-O Rg8 13. Rhg1 Rc8 14. g4 Rg5 15. Qh4 Ne7 16. Nd4 Ng6 17. Qh3 f4 18. Bd3 Rxc3 {De la Calle,I (2383) -Sosa Patino,C (2430) ICCF 2011 0-1 (51)}) 7... Be7 8. Na4 Qd8 9. e3 O-O 10. Bd3 d5 11. O-O Bd7 12. Nc3 Nc6 13. f3 Qb6 14. Na4 Qb4 15. Qxb4 Nxb4 16. Bxf6 gxf6 17. Nc3 Rac8 {Sesko,M-Ravnik,I ICCF 2006 0-1 (55)}) (6. Bf4 d6 7. Bg3 a6 8. e3 Qc7 9. Bd3 Nbd7 10. O-O Be7 11. Ne4 Nxe4 12. Bxe4 h5 13. h4 e5 14. Nf5 Bf8 15. Qd5 Nf6 16. Qb3 Nxe4 17. Qa4+ Qc6 {Weggen,R (1745)-Hooft,D ICCF 2016 0-1 (31)}) 6... Qxf6 7. e3 (7. g3 d5 8. Bg2 Bc5 9. e3 Nc6 10. Ncb5 O-O 11. Nxc6 bxc6 12. Nd4 Rb8 13. Nb3 Qxb2 14. O-O Be7 15. c4 Ba6 16. Qc1 Qf6 17. Rd1 Bxc4 18. Na5 Rb2 {Schramm,L (1872)-Bolz,B ICCF 2010 0-1}) 7... Nc6 (7... d5 8. Bb5+ Bd7 9. Qd3 a6 10. Bxd7+ Nxd7 11. f4 Bb4 12. Nb3 Rc8 13. Kd2 O-O 14. a3 Bxc3+ 15. bxc3 Rc4 16. g4 Rfc8 17. g5 hxg5 18. fxg5 Qxg5 19. Rhg1 {Mayes,F-Cook,P (1816) ICCF 2010 0-1 (27)}) 8. Ndb5 Qe5 9. Be2 a6 10. Nd4 Rb8 11. Qd2 Be7 12. O-O O-O 13. f4 Qc7 14. Ne4 b5 15. Nxc6 Qxc6 16. Nf2 b4 {Bernhardsson,S (2336) -Relyea,A (2340) ICCF 2018 0-1 (40)}) (5. Bxf6 Qxf6 6. Nxd4 Nc6 7. e3 d5 8. Bb5 Bd7 9. O-O Bd6 10. a3 O-O 11. Rb1 Qd8 12. b4 Nxd4 13. exd4 Rc8 14. Rb3 Rxc3 15. Rxc3 Bxb5 16. Re1 a5 {Ridout,P-Gross,M (2203) ICCF 2017 0-1 (25)}) 5... Be7 ( 5... Nc6 6. Qh4 (6. Qd2 Bb4 7. a3 Qa5 8. a4 Ne4 9. Qd3 Bxc3+ 10. Bd2 Nxd2 11. bxc3 Nxf1 12. Kxf1 O-O 13. Nd2 d5 14. Nb3 Qc7 15. Nd4 Nxd4 16. cxd4 Bd7 17. f3 Rac8 {Puusaari,A (1676)-Ylönen,O (1681) ICCF 2010 0-1}) 6... h6 (6... Bb4 7. O-O-O (7. e4 e5 8. Rd1 Qa5 9. Bxf6 Bxc3+ 10. bxc3 Qxc3+ 11. Nd2 gxf6 12. Qxf6 Rf8 13. Bc4 b6 14. O-O Na5 15. Bd5 Bb7 16. Nf3 {1-0 (16) Rausch,W (1814) -Teslenko,D (1749) ICCF 2018}) 7... Bxc3 8. bxc3 h6 9. Nd2 Rg8 10. Bxf6 Qxf6 11. Qg3 Ke7 12. Ne4 Qe5 13. Nd6 Qxg3 14. hxg3 Rb8 15. e4 b6 16. Bb5 Bb7 17. Kb2 Na5 18. Rd4 {Vorontsov,G (1938)-Abolins-Abols,D (2137) ICCF 2018 1/2-1/2 (46)}) 7. e4 (7. O-O-O Be7 8. Ne4 Nxe4 9. Bxe7 Qxe7 10. Qxe4 d5 11. Qa4 O-O 12. e4 Qc5 13. Rd2 a6 14. exd5 exd5 15. Qf4 Re8 16. Bd3 Nb4 17. Kb1 Nxd3 18. cxd3 Bd7 { Dunne,A (2284)-Ellis,J (2086) ICCF 2017 0-1 (71)}) 7... Bb4 (7... Rg8 8. Bxf6 gxf6 9. O-O-O a6 10. Nd2 Qc7 11. Kb1 b5 12. Nd5 exd5 13. exd5 Ne5 14. Ne4 Bg7 15. f4 Ng6 16. Qe1 Kf8 17. Qb4+ d6 18. Nxd6 a5 19. Nxb5+ {Hrzina,B (2165) -Packroff,H (2216) ICCF 2017 1-0 (52)}) 8. Bd2 d5 9. e5 Bxc3 10. Bxc3 Ne4 11. Qxd8+ Kxd8 12. Bd4 Ng5 13. Nxg5 hxg5 14. Bc3 Bd7 15. O-O-O Ke7 16. b3 Rad8 17. f3 {Carlier,E (2351)-Depasse,J (2284) ICCF 2012 1/2-1/2}) 6. e4 (6. Qh4 h6 7. e4 O-O 8. Bxh6 gxh6 9. e5 Nh7 10. Qxh6 f6 11. Qg6+ Kh8 12. Bd3 f5 13. g4 Rg8 14. Qh5 Rxg4 15. O-O-O b6 16. h3 Rg8 17. Rhg1 Bb7 {Kobryn,D (1969)-Frydendal,O (1899) ICCF 2010 0-1 (35)}) (6. O-O-O h6 7. Bh4 O-O 8. e4 Nc6 9. Qd2 Nxe4 10. Bxe7 Nxd2 11. Bxd8 Nxf3 12. gxf3 Rxd8 13. Rd6 b6 14. Bb5 Na5 15. Rhd1 Nb7 16. R6d4 d5 17. Bc6 Rb8 {Mora Collao,F (1306)-Legrand,P (1838) ICCF 2020 0-1 (40)}) (6. e3 h6 7. Be2 hxg5 8. O-O-O Nc6 9. Qa4 g4 10. Nd4 a6 11. Nxc6 bxc6 12. Bxg4 Rb8 13. Qf4 Rb4 14. Rd4 c5 15. Rxb4 cxb4 16. Ne2 Rh4 17. f3 Bb7 {Weggen,R (1747)-Hrzina,B ICCF 2015 0-1 (33)}) 6... Nc6 7. Qa4 a6 (7... Qc7 8. Nb5 Qb8 9. Bd3 h6 10. Bh4 d6 11. O-O Bd7 12. Qb3 a6 13. Nbd4 Nxe4 14. Bxe4 Nxd4 15. Nxd4 Bxh4 16. Bxb7 Ra7 17. Bc6 O-O 18. Qa4 Qc7 19. Rad1 {Vorontsov,G (2037)-Shadrin, O (2373) ICCF 2016 1/2-1/2 (49)}) (7... O-O 8. e5 Nd5 9. Bxe7 Ndxe7 10. Bd3 f6 11. exf6 Rxf6 12. Qh4 Rh6 13. Qg3 Nb4 14. O-O-O Nxd3+ 15. Rxd3 d5 16. Ne5 Bd7 17. Re1 Be8 18. f4 Qb6 19. Qg5 {Vorontsov,G (2065)-Popov,V (2110) ICCF 2014 1/ 2-1/2 (43)}) 8. e5 Nd5 9. Bxe7 Nxc3 10. Qxc6 {1-0 (10) Lehtinen,P (2270)-Laine, E (1871) ICCF 2007}) (4. d5 Qa5+ (4... exd5 5. e3 Qa5+ 6. Nc3 Be7 7. Qd2 Nc6 8. Bxf6 Bxf6 9. Nxd5 Qxd2+ 10. Kxd2 Bd8 11. Rd1 d6 12. Kc1 Be6 13. Nf4 Be7 14. g3 Rd8 15. h4 Bg4 16. Be2 {Lins,T (2440)-Packroff,H (2276) ICCF 2017 1-0 (42)}) 5. Bd2 Qb6 6. dxe6 dxe6 7. Bc3 Nc6 8. a4 Nd5 9. Qd2 Nxc3 10. Qxc3 f6 11. e3 Be7 12. Bc4 Qb4 13. Qxb4 cxb4 14. Nbd2 Kf7 15. O-O-O Bd7 {Bultman,M (2281)-Valák, A (2379) ICCF 2012 0-1 (54)}) (4. b4 cxd4 5. Nxd4 Bxb4+ 6. Nd2 e5 7. N4f3 Bc3 8. Nxe5 Bxe5 9. Ne4 Nxe4 10. e3 Qa5+ 11. Ke2 Nc3+ 12. Kd2 Nxd1+ 13. Kxd1 Bxa1 14. f4 h6 15. Be2 Qd5+ {Henriques,K (1423)-Rimkus,B (2103) ICCF 2017 0-1}) (4. dxc5 Bxc5 5. e3 Qb6 6. Bxf6 gxf6 7. b3 Rg8 8. Qd3 f5 9. Nc3 Be7 10. Be2 Rxg2 11. Kf1 Rg8 12. Rg1 Rxg1+ 13. Kxg1 Bf6 14. Rc1 d5 15. Na4 Qc7 {Weggen,R (1745) -Faber,K (2098) ICCF 2017 0-1 (37)}) (4. Ne5 Nc6 5. e3 cxd4 6. Bc4 (6. f4 dxe3 7. Bxf6 Qxf6 8. g3 Nxe5 9. fxe5 Qf2# {0-1 (9) Magill,R (1185)-Stewart,S ICCF 2020}) 6... Nxe5 7. Na3 Bxa3 8. Bf4 Bb4+ 9. c3 dxc3 10. Bxe5 c2+ 11. Ke2 cxd1=Q+ 12. Rhxd1 O-O 13. a3 Be7 {0-1 (13) Henriques,K (1303)-Hatigoran,S ICCF 2018}) (4. g3 cxd4 5. Qxd4 Nc6 6. Qe3 Be7 7. Bg2 d5 8. O-O O-O 9. Nc3 d4 10. Nxd4 Qxd4 11. Bxc6 Qxe3 12. Bxe3 bxc6 13. b3 Ba6 14. Rfe1 Bb4 15. Bd2 Rfd8 { Matos,B (1645)-Price,B (2064) ICCF 2019 0-1 (33)}) 4... Qb6 (4... Be7 5. dxc5 ( 5. Nbd2 b6 (5... cxd4 6. exd4 Nc6 (6... d6 7. c3 O-O 8. Bd3 (8. Bh4 Nc6 9. Bd3 Bd7 10. O-O Rc8 11. Nc4 Ne8 {1/2-1/2 (11) Pino Muñoz,F (2262)-Marrone,V (2230) ICCF 2012}) 8... h6 9. Bf4 Nc6 10. O-O e5 11. Bg3 exd4 12. Nxd4 Nxd4 13. cxd4 Be6 14. Re1 Rc8 15. Qe2 a6 16. Nf3 Re8 17. Qd2 Bd5 18. a3 {Fermen,G (1721) -Beck,G (1964) ICCF 2016 1/2-1/2 (32)}) 7. Bd3 O-O 8. O-O h6 9. Bxf6 Bxf6 10. c3 Qc7 11. Re1 d5 12. Nf1 g6 13. Ne3 h5 14. g3 Bd7 15. Ng2 Bg7 16. Nf4 Bh6 17. Ng2 {Alexa,J (2355)-Kýhos,A (2274) ICCF 2014 1-0 (28)}) (5... d6 6. dxc5 dxc5 7. Bc4 h6 8. Bf4 Bd7 9. O-O Bc6 10. Qe2 Qb6 11. Ne5 O-O 12. Bb3 Nbd7 13. Ndc4 Qa6 14. Nxc6 Qxc6 15. a4 b6 16. Rfd1 Rfd8 17. c3 {Weggen,R (1819)-Dlugolecki,G (2088) ICCF 2014 0-1 (32)}) 6. Bd3 (6. c3 O-O (6... Bb7 7. Be2 O-O 8. O-O h6 9. Bf4 Nh5 10. Bxb8 Rxb8 11. Ne5 Nf6 12. Bf3 Qc7 13. Bxb7 Qxb7 14. Qf3 Rfc8 15. Rfc1 d5 16. Qd1 Bd6 17. a4 Bxe5 18. dxe5 {Winter,M-Volosov,P ICCF 2013 0-1 (54) }) 7. Be2 h6 8. Bxf6 Bxf6 9. O-O Bb7 10. Bd3 d5 11. Ne5 Bxe5 12. dxe5 c4 13. Bc2 b5 14. b4 Nc6 15. f4 f5 16. a4 a6 17. Qf3 d4 {Crooks,T-Olsen,S (1644) ICCF 2017 1/2-1/2 (25)}) 6... cxd4 (6... O-O 7. Qe2 h6 8. h4 cxd4 9. exd4 Bb7 10. Bxf6 Bxf6 11. c3 g6 12. O-O-O Bg7 13. Ne5 Nc6 14. f4 Nxe5 15. dxe5 d6 16. Be4 Bd5 17. Nf3 dxe5 18. fxe5 {Landero Luna,V (2321)-David-Bordier,C (2313) ICCF 2016 1/2-1/2}) 7. exd4 Ba6 8. Bxa6 (8. Bxf6 Bxf6 9. Ne4 Be7 10. d5 f5 11. Ng3 Bf6 12. c3 O-O 13. O-O g6 14. Re1 Re8 15. Bxa6 Nxa6 16. Qd2 e5 17. d6 Kh8 18. h4 Nc5 19. b4 e4 {Breuer,E (2243)-Viitala,A (2170) ICCF 2005 1-0 (34)}) 8... Nxa6 9. O-O O-O 10. c3 Nc7 11. Re1 Ncd5 12. c4 Nc7 13. Rc1 d5 14. c5 bxc5 15. dxc5 Na6 16. c6 Rc8 {Kovats,J (1959)-Johnson,K (1798) ICCF 2014 1-0 (32)}) (5. Bd3 O-O (5... h6 6. Bf4 Qb6 7. Nc3 Nc6 8. Qd2 cxd4 9. exd4 Nb4 10. O-O Nxd3 11. Qxd3 d6 12. d5 e5 13. Be3 Qa6 14. Nb5 O-O 15. Nc7 Qxd3 16. cxd3 Bf5 17. Nxa8 { Pisani,C (2170)-Toledo,R (2081) ICCF 2016 1/2-1/2 (34)}) 6. O-O b6 (6... h6 7. Bh4 Nc6 8. a3 cxd4 9. exd4 d6 10. c3 Bd7 11. Qc2 g5 12. Bg3 Nh5 13. Nbd2 g4 14. Ne1 f5 15. Nc4 f4 16. Bh7+ Kh8 17. Qg6 Ng7 18. Nd3 {Arteaga Hernández, L-Hernández Delgado,J (1830) ICCF 2013 0-1 (31)}) 7. a4 d5 8. Ne5 Bb7 9. f4 c4 10. Be2 Nfd7 11. Bxe7 Qxe7 12. Rf3 Nc6 13. Rh3 Ncxe5 14. fxe5 f6 15. exf6 Rxf6 16. b3 cxb3 {Lima,A (1963)-Seidl,A (1860) ICCF 2015 0-1 (29)}) (5. c3 b6 (5... Qb6 6. Qc2 d5 7. Nbd2 h6 8. Bf4 O-O 9. Be2 c4 10. h3 Nc6 11. Ne5 Nxe5 12. Bxe5 Qc6 13. Nf3 b5 14. a3 Nd7 15. Bg3 Bd6 16. Bxd6 Qxd6 17. g4 {Neil,C (1549) -Lawrence,S (1839) ICCF 2015 0-1 (38)}) 6. Bxf6 (6. a4 O-O 7. Nbd2 h6 8. Bh4 d5 9. Bd3 Bb7 10. O-O Nbd7 11. Qb1 Bd6 12. Bg3 Bxg3 13. hxg3 a6 14. b4 c4 15. Bc2 Qc7 16. Qb2 Rfe8 17. a5 b5 {Runyon,M-Owens,S (2051) ICCF 2010 0-1 (56)}) 6... Bxf6 7. Bd3 (7. h4 Bb7 8. h5 d6 9. h6 g6 10. Bd3 Nd7 11. Nbd2 Be7 12. Qc2 Qc7 13. O-O-O a6 14. e4 b5 15. e5 c4 16. Be4 d5 17. Bxd5 Bxd5 18. Rde1 Rb8 { Che,T (1582)-Pheby,I (2310) ICCF 2016 0-1 (25)}) 7... Nc6 8. dxc5 bxc5 9. O-O Rb8 10. Qc2 g6 11. Nbd2 O-O 12. Ne4 Be7 13. a3 d5 14. Ng3 c4 15. Be2 Na5 16. Nd4 Qb6 {Che,T (1622)-Zaas,J ICCF 2015 0-1 (33)}) (5. c4 cxd4 6. Nxd4 Qa5+ 7. Nc3 Qxg5 8. Nf3 Qh6 9. Qa4 Na6 10. a3 Nc5 11. Qc2 Qg6 12. Qxg6 hxg6 13. b4 Nce4 14. Nb5 Kf8 15. c5 a6 16. Nbd4 a5 {Richards,M (1493)-Knigge,M ICCF 2016 0-1 (28)}) (5. Bxf6 Bxf6 6. c3 cxd4 7. exd4 d6 8. Bd3 O-O 9. O-O Bd7 10. Nbd2 Nc6 11. Qc2 Kh8 12. Rfe1 Rc8 13. Nc4 Qc7 14. Rac1 b5 15. Ne3 a6 16. Bxh7 g6 { Engels,J-Kalapos,K (1774) ICCF 2017 1-0 (29)}) 5... Qa5+ (5... Bxc5 6. Bd3 (6. c4 Bb4+ 7. Nbd2 b6 8. Bd3 Nc6 9. O-O Be7 10. Nb3 {1-0 (10) Arcenegui Rodrigo,J (2223)-Barnola Espelt,J (2096) ICCF 2008}) 6... O-O 7. O-O d5 8. c4 h6 9. Bh4 dxc4 10. Bxc4 Be7 11. Nc3 Nc6 12. h3 Qb6 13. Qb3 Qxb3 14. Bxb3 b6 15. Bg3 Bb7 16. Rfd1 Rfd8 17. Ne5 {Casella,S (1660)-Bosetti,R (1811) ICCF 2020 1/2-1/2}) ( 5... O-O 6. Bd3 Na6 7. Bxa6 bxa6 8. Qd4 Bb7 9. Nbd2 Rc8 10. Nb3 h6 11. Bh4 Ne4 12. Bxe7 Qxe7 13. Na5 Nxc5 14. Nxb7 Nxb7 15. c3 Nc5 16. O-O Rfd8 17. Rfd1 { Gruber,G (1984)-Vegjeleki,A (2239) ICCF 2012 1/2-1/2 (41)}) 6. Nbd2 (6. Qd2 Qxc5 7. Nc3 (7. c4 b6 8. Nc3 Bb7 9. Be2 O-O 10. O-O d6 11. Bh4 Nbd7 12. Nd4 Rac8 13. Rac1 a6 14. Rfd1 Qc7 15. Bg3 Rfd8 16. f3 Ne5 17. e4 h6 18. Bf2 Qb8 { Dutra,A (2419)-Diaz,S (2528) ICCF 2011 0-1 (77)}) 7... d5 8. Bd3 O-O 9. a3 h6 10. b4 Qb6 11. Bh4 Bd7 12. O-O a5 13. b5 a4 14. Bg3 Rc8 15. Be5 Be8 16. e4 dxe4 17. Nxe4 Nxe4 {Curado,M (1951)-Evstigneev,S (2291) ICCF 2012 0-1 (52)}) (6. c3 Qxc5 7. Nbd2 d5 8. Bd3 Nbd7 9. O-O O-O 10. Qc2 h6 11. Bh4 Bd6 (11... e5 12. Bxf6 Bxf6 13. e4 Nb6 14. Rfe1 Be6 15. exd5 Nxd5 16. Nxe5 Nf4 17. Ndf3 Nxd3 18. Nxd3 Qf5 19. Nb4 Rad8 20. Qxf5 Bxf5 21. Rad1 Be6 22. a3 Bb3 23. Rd2 {Ryska,J (2174)-Portych,V (2157) ICCF 2009 1/2-1/2 (30)}) 12. Rfe1 Qc7 13. c4 g5 14. Bg3 Bxg3 15. hxg3 dxc4 16. Nd4 Ne5 17. Nxc4 Nxc4 {Santos,M (2420)-Soza de la Carrera,J (2454) ICCF 2007 1/2-1/2 (29)}) (6. Nc3 Qxc5 7. e4 {1-0 (7) Owens,J (1728)-Król,P (1821) ICCF 2015}) 6... Qxc5 7. Bd3 h6 (7... b6 8. O-O Bb7 9. c3 d6 10. Bxf6 gxf6 11. Nd4 a6 12. Ne4 Qc8 13. Qh5 Nc6 14. Nd2 Ne5 15. Bc2 f5 16. e4 Rg8 17. Rae1 f4 18. Qxh7 Kd7 19. Qh6 {Ockeloen,B (2155)-Borwell,A (2207) ICCF 2006 0-1}) 8. Bh4 d6 9. O-O Nbd7 (9... g5 10. Bg3 h5 11. b4 Qc7 12. h4 gxh4 13. Bxh4 Rg8 14. c4 Nbd7 15. Nb3 b6 16. Nbd4 Bb7 17. Ng5 Ng4 18. Ngxe6 fxe6 19. Bh7 Kf7 20. Bxg8+ Rxg8 21. Qc2 {Oinonen,A (1845)-Dimitrov,D ICCF 2007 0-1 (34)}) 10. Nd4 O-O 11. c4 (11. Qe2 Qc7 12. c4 a6 13. f4 b6 14. b4 Bb7 15. a3 Rfe8 16. Bg3 e5 17. fxe5 dxe5 18. Bc2 Bf8 19. Rab1 Qc8 20. N4f3 a5 21. Rb2 axb4 22. axb4 e4 {Baklanov,V (2475)-Keuter,K (2484) ICCF 2009 1/2-1/2 (35)}) 11... a6 12. Be2 Qc7 13. a4 b6 14. b4 Bb7 15. a5 bxa5 16. Rxa5 {Shulman,B (2411)-Jedinger,A (2236) ICCF 2015 1/2-1/2 (44)}) (4... cxd4 5. exd4 (5. Nxd4 Qa5+ 6. Qd2 Qxg5 7. Qc3 Nc6 8. a3 Nxd4 9. Qxd4 Bc5 10. Qd2 Ne4 11. h4 Qf6 12. Qe2 Qxb2 13. Qd3 Qxa1 14. Qxe4 Qxb1+ 15. Ke2 d5 16. Qd3 Bd7 {Enoksson,B (1266) -Kruk,S (1725) ICCF 2021 0-1 (25)}) 5... b6 (5... Nc6 6. c3 Be7 (6... h6 7. Bh4 Qb6 8. Qb3 Nd5 9. Bg3 f5 10. Bd3 Be7 11. O-O O-O 12. h3 d6 13. Qc2 Bd7 14. Nbd2 Rf6 15. Rac1 Rc8 16. a3 a6 17. Qd1 Rg6 18. Re1 {Eilmes,D (2265)-Curado,M (1967) ICCF 2011 1-0 (52)}) 7. Bd3 h6 8. Bh4 Nh5 9. Bxe7 Nxe7 10. Ne5 Nf4 11. O-O Nxd3 12. Qxd3 O-O 13. Nd2 b6 14. a4 d6 15. Ng4 Bb7 16. Ne3 Qc7 17. a5 {Arteaga Hernández,L (1877)-Pérez López,A (2028) ICCF 2014 0-1 (53)}) (5... Qb6 6. Nc3 Nc6 7. d5 Qxb2 8. Nb5 Nb4 9. Nfd4 a6 10. Nc7+ Kd8 11. Nxa8 Qc3+ 12. Ke2 Bc5 13. Nf3 h6 14. Bxf6+ Qxf6 15. c3 Nxd5 16. Qb3 b5 17. Rc1 {Zupancic,J-Sesko,M (1948) ICCF 2009 0-1}) 6. Bd3 Bb7 (6... Be7 7. O-O O-O 8. a4 (8. c4 d5 9. Bxf6 Bxf6 10. cxd5 exd5 11. Ne5 Bb7 12. Nd2 Qd6 13. Ndf3 Nc6 14. Ng4 Bxd4 15. Nxd4 Nxd4 16. Bxh7+ Kxh7 17. Qxd4 Kg8 18. Ne3 f5 19. Rad1 Rae8 {Ralls,R (2085) -Plankert,H (2034) ICCF 2015 1-0 (70)}) 8... h6 9. Bh4 Nc6 10. c3 Nh5 11. Bxe7 Nxe7 12. Re1 Bb7 13. Nbd2 Nf4 14. Bf1 Qc7 15. a5 bxa5 16. Qa4 Bxf3 17. Nxf3 Rfb8 18. Ra2 {Powers Roibal,F-Herzog,K (2088) ICCF 2018 1/2-1/2 (38)}) 7. O-O Be7 8. c4 Bxf3 9. Qxf3 Nc6 10. Qe3 (10. Qh3 Nxd4 11. Nc3 Rc8 12. Rae1 Rc5 13. f4 h6 14. b4 Rc8 15. f5 Bxb4 16. Nd5 Be7 17. Bxf6 gxf6 18. Qh4 e5 19. Re4 Nc6 20. Rb1 a5 21. Bf1 Nb4 {Bruce,R (2100)-Relyea,A (2273) ICCF 2020 0-1 (47)}) ( 10. Be3 Nb4 11. Qd1 Nxd3 12. Qxd3 d5 13. b3 O-O 14. Nd2 Ng4 15. Bf4 Bd6 16. Bxd6 Qxd6 17. Nf3 Rac8 18. a4 Nh6 19. h3 Nf5 20. a5 Rfd8 21. Rfd1 h6 {Durandal, J (2048)-Burmeister,F (2206) ICCF 2019 1/2-1/2 (27)}) 10... Nb4 (10... h6 11. Bf4 Nb4 12. Nc3 Nxd3 13. Qxd3 d5 14. cxd5 Nxd5 15. Qb5+ Qd7 16. Nxd5 exd5 17. Qb3 O-O 18. Qg3 Bf6 19. Rad1 Rfe8 20. Be5 Bxe5 21. dxe5 Rac8 22. f4 {Mason,I (2287)-Rawlings,A (2389) ICCF 2018 1/2-1/2 (35)}) 11. Bxf6 Bxf6 12. Nc3 O-O 13. Rac1 d5 14. cxd5 Nxd5 15. Nxd5 exd5 16. Rfe1 {Ellis,L (2297)-Brzezinski,B (1935) ICCF 2013 1/2-1/2 (40)}) (4... b6 5. d5 exd5 (5... h6 6. Bxf6 Qxf6 7. Nc3 a6 8. Nd2 b5 9. Be2 Bb7 10. Bf3 Ra7 11. O-O Qd8 12. a4 b4 13. Ne2 Bd6 14. c3 O-O 15. cxb4 Qh4 16. g3 Qxb4 17. Nc3 {Panman,H (2305)-Kozlov,V (2412) ICCF 2014 1/2-1/2 (37)}) 6. Nc3 Be7 7. Nxd5 Bb7 8. Bxf6 Bxf6 9. c3 O-O 10. Bc4 Na6 11. Bxa6 Bxa6 12. Qa4 Bb7 13. O-O-O Bd4 14. Qb3 Bf6 15. h4 Re8 16. g4 { Hendricks,R-Scott,Z ICCF 2017 1-0 (47)}) (4... Nc6 5. Nc3 (5. Nbd2 h6 (5... cxd4 6. exd4 d5 7. c3 Bd6 8. Bb5 Qb6 9. Qb3 Bd7 10. a4 h6 11. Bxf6 gxf6 12. O-O O-O-O 13. Qa2 Rhg8 14. g3 f5 15. b4 f4 16. Nb3 fxg3 17. fxg3 {Abolins-Abols,D (1980)-Prieckaerts,P (1975) ICCF 2016 1-0 (53)}) 6. Bxf6 gxf6 7. Bd3 Qb6 8. d5 exd5 9. e4 d4 10. O-O Bg7 11. Re1 Ne5 12. Nc4 Qc6 13. a4 O-O 14. c3 Nxd3 15. Qxd3 Rd8 16. cxd4 d5 {Gongora-Montes,B (2114)-Carrillo Pujol,J (2060) ICCF 2020 1/2-1/2 (42)}) (5. c3 b6 6. Nbd2 Be7 (6... Bb7 7. dxc5 bxc5 8. Bb5 Be7 9. e4 O-O 10. O-O d6 11. Re1 Rb8 12. Bf4 Qc7 13. Qc2 h6 14. h3 e5 15. Bh2 Na5 16. Be2 Bc6 17. b3 Qb7 18. Bf1 {Ybarra,M-Cros Goma,A (2108) ICCF 2016 1-0 (40)}) 7. Be2 O-O 8. O-O Bb7 9. Re1 d5 10. Bd3 h6 11. Bh4 Rc8 12. Qe2 Ne4 13. Bxe7 Nxe7 14. Ba6 Qc7 15. Bxb7 Qxb7 16. Rad1 Nxd2 {Tibbert,P (1784)-Norman,N (2145) ICCF 2012 0-1 (46)}) 5... d5 6. Bb5 cxd4 7. exd4 Be7 8. O-O O-O 9. Ne5 Nxe5 10. dxe5 Nd7 11. Bxe7 Qxe7 12. Qd4 Qc5 13. Qxc5 Nxc5 14. Rad1 Bd7 15. Be2 g6 16. f4 { Curado,M (1951)-Rimkus,B (2258) ICCF 2012 0-1 (55)}) (4... e5 5. dxe5 h6 6. Bh4 g5 7. Bg3 Nh5 8. Nc3 Nc6 9. Qd5 Bg7 10. O-O-O Qe7 11. Qe4 Kd8 12. Nb5 Nxg3 13. hxg3 f5 14. Qd5 g4 15. Nh4 Qxe5 16. Qxe5 {Pietrobono,A (2214)-Risdon,A (1887) ICCF 2014 1-0 (59)}) 5. Qc1 (5. Nc3 Qxb2 (5... d5 6. Be2 Nc6 7. O-O cxd4 8. exd4 Be7 9. a3 Bd7 (9... h6 10. Bf4 a6 11. h3 O-O 12. Bd3 Nh5 13. Bh2 Bd7 14. Re1 (14. Na4 Qa7 15. b4 b6 16. Nb2 Nf6 {Sánchez,M (2399)-Silva Filho,A (2333) ICCF 2013 1/2-1/2 (34)}) 14... Nf6 15. Rb1 Rac8 16. Ne2 Ne4 17. c4 Ng5 18. Nxg5 dxc4 19. Bh7+ Kh8 20. Nxf7+ Rxf7 21. Bg6 {Greninger,H (2201)-Camps,J (2102) ICCF 2018 1/2-1/2 (36)}) 10. Qd3 O-O 11. Rab1 h6 12. Bf4 Rac8 13. h3 a6 14. Qe3 Ne8 15. Bd3 g5 16. Bh2 f5 17. Rfe1 {Pietrobono,A (2214)-Potrata,J (2294) ICCF 2014 1/2-1/2 (39)}) (5... a6 6. Rb1 d5 7. Bd3 Be7 8. O-O c4 9. Be2 Nbd7 10. Ne5 Qc7 11. f4 b5 12. a3 h6 13. Bh4 O-O 14. Qe1 Bb7 15. g4 Nxe5 16. fxe5 Nh7 17. Bxe7 {Bertaggia,M (1805)-Lang,F (1902) ICCF 2018 1/2-1/2 (34)}) 6. Nb5 Qb4+ 7. Nd2 (7. Qd2 Qxd2+ {Gonzalez,P-Schaffarth,P (1840) ICCF 2021}) 7... Qa5 8. dxc5 (8. c3 a6 9. Nc4 Qxb5 10. Nd6+ Bxd6 11. Bxb5 axb5 12. Bxf6 gxf6 13. Qg4 Bf8 14. O-O Nc6 15. dxc5 f5 16. Qg3 h5 17. Rab1 h4 18. Qg5 Ra4 19. h3 Bxc5 {Weggen,R (1848)-Carter,M (1749) ICCF 2013 0-1 (41)}) (8. Bf4 Nd5 9. Qg4 cxd4 10. Nd6+ Bxd6 11. Qxg7 Bf8 12. Qxh8 Qc3 13. Rc1 dxe3 14. Qxc3 exf2+ 15. Kxf2 Nxc3 16. Bd3 Nd5 17. Bg3 Bc5+ 18. Kf3 f5 19. Nb3 Be7 {Tvrdon,P-Hajník,J (2024) ICCF 2012 0-1 (33)}) 8... a6 9. Nd6+ Bxd6 10. Bxf6 Bf8 11. Bb2 Qxc5 (11... Nc6 12. Bd3 Qxc5 13. O-O Nb4 14. e4 d6 (14... h5 15. a3 (15. Nf3 d6 16. Rb1 Nc6 17. Qe2 Ne5 18. Nxe5 dxe5 19. Qd2 f6 20. Rfd1 Kf7 21. Be2 Qc6 22. Qd3 b6 23. Qf3 Bd6 24. Ba3 Bxa3 25. Qxa3 Ra7 26. Qe3 Rc7 {Romanov,E-Delaney,A ICCF 2013 1/2-1/2 (41)}) 15... Nc6 16. Nb3 Qb6 17. Kh1 Qc7 18. f4 b6 19. Rb1 Bb7 20. Qe2 f6 21. Rbd1 Be7 22. Nd2 b5 23. f5 Rd8 24. h3 Ne5 25. Bxe5 Qxe5 26. c4 {Kain,T (2269) -Wettstein,K (2238) ICCF 2011 1/2-1/2 (27)}) 15. Nc4 b5 16. Ne3 Nxd3 17. cxd3 Bd7 18. Qe2 Qb6 19. Kh1 f6 20. f4 Be7 21. Qh5+ g6 22. Qf3 O-O 23. f5 {Panman,H (2303)-Arnold,H (2304) ICCF 2014 1/2-1/2 (42)}) 12. Bd3 d6 13. O-O Nd7 14. c4 Qc7 15. f4 Nc5 16. Bc2 h5 {Schiendorfer,R (2395)-Hauenstein,H (2411) ICCF 2015 1/2-1/2 (52)}) (5. Nbd2 Qxb2 (5... cxd4 6. Nxd4 (6. exd4 Qxb2 7. Bd3 d5 8. O-O Be7 9. Rb1 Qc3 10. Re1 Qc7 11. Ne5 Nc6 12. Bf4 Nxe5 13. Bxe5 Qd8 14. Qf3 b6 15. Qg3 Kf8 16. a4 h5 17. h4 Kg8 {Landero Luna,V (2275)-Voveris,G (2415) ICCF 2018 1/2-1/2 (30)}) 6... d5 (6... Be7 7. Nc4 Qc5 8. Bxf6 Bxf6 9. Nb3 Qc6 10. Nba5 Qc5 11. Nb3 Qc7 12. Nd6+ Ke7 13. Nc4 d5 14. Ncd2 Bxb2 15. Rb1 Bc3 16. Bd3 Nd7 17. O-O a6 18. Nd4 {Casella,S (1657)-Bartsch,R (2251) ICCF 2019 0-1 (29)}) 7. Bxf6 gxf6 8. Bb5+ Bd7 9. Bxd7+ Nxd7 10. c4 dxc4 11. O-O Rc8 12. Qe2 Qa6 13. Rfc1 Nb6 14. a4 Bg7 15. a5 Nd5 16. Nxc4 O-O 17. Rab1 {Owens,J (1410)-Kogan,B ICCF 2014 0-1 (42)}) 6. Bd3 (6. Bxf6 gxf6 7. Be2 (7. Bd3 Nc6 8. O-O cxd4 9. Nc4 Qc3 10. Rb1 Na5 11. Nxa5 Qxa5 12. Nxd4 a6 13. c4 Qc7 14. Qh5 Rb8 15. Rfd1 h6 16. Qf3 f5 17. e4 Bg7 18. Be2 fxe4 {Bronnikov,A (2186)-Tkachenko,I (2177) ICCF 2011 1/2-1/2 (73)}) 7... Qb6 (7... Nc6 8. O-O cxd4 9. Nc4 Qc3 10. Rb1 Na5 11. Nxa5 Qxa5 12. Qxd4 Be7 13. Rfd1 Qc7 14. Nd2 b6 15. Ne4 Qe5 16. Qa4 f5 17. Ng3 Qc7 18. Nh5 Rg8 19. g3 {Issler,C (2587)-Wunderlich,H (2611) ICCF 2009 0-1 (42)} ) 8. O-O cxd4 9. exd4 Bg7 10. c4 Qc7 11. c5 d5 12. cxd6 Qxd6 13. Ne4 Qe7 14. d5 exd5 15. Qxd5 O-O 16. Ng3 f5 17. Rae1 Nc6 {Vicoli,G (2239)-Storkebaum,K (2247) ICCF 2019 1/2-1/2 (25)}) (6. Rb1 Qxa2 7. Nc4 Qa4 8. Bd3 b5 9. Rxb5 Ba6 10. Nb2 Qa3 11. Rb3 Qa5+ 12. c3 d5 13. dxc5 Nbd7 14. Qe2 Nxc5 15. Bxa6 Qa1+ 16. Nd1 Qxa6 17. Qxa6 Nxa6 {Polishchuk,A (2159)-Bychkov,M (2249) ICCF 2007 0-1 (37)}) ( 6. Be2 Be7 7. O-O d5 8. c4 O-O 9. cxd5 exd5 10. dxc5 h6 11. Bf4 Nbd7 12. Rb1 Qa3 13. Nd4 Nxc5 14. Nb5 Qxa2 15. Ra1 Qb2 16. Rb1 Qa2 17. Ra1 Qb2 { Gongora-Montes,B (2072)-Schmidt,P (2094) ICCF 2018 1/2-1/2}) 6... Qa3 (6... d5 7. Bxf6 (7. c4 Qa3 8. Qb1 dxc4 9. Nxc4 Qb4+ 10. Qxb4 cxb4 11. O-O Be7 12. a3 bxa3 13. Nxa3 O-O 14. Nc4 Nbd7 15. Rfb1 a6 16. Nfe5 h6 17. Nxd7 Bxd7 18. Bxf6 Bxf6 {Poelvoorde,H-Naniwadekar,M (1749) ICCF 2020 1/2-1/2}) 7... gxf6 8. c4 Qa3 (8... Qc3 9. Be2 Nc6 10. dxc5 dxc4 11. O-O Qa5 12. Nxc4 Qxc5 13. Rb1 Rb8 14. Qd2 e5 15. Rfc1 Qe7 16. Ncxe5 fxe5 17. Rxc6 Bg7 18. Qc2 O-O 19. Rc7 Qd8 20. Bd3 {Kmiecik,K (2176)-Nisula,T (2246) ICCF 2011 1-0 (35)}) 9. Be2 Nc6 10. cxd5 (10. O-O cxd4 11. cxd5 exd5 12. Nxd4 Nxd4 13. exd4 Bb4 14. Nb3 Be6 15. Rc1 Rc8 16. Rxc8+ Bxc8 17. Bb5+ Ke7 18. Qe2+ {1/2-1/2 (18) Sedlácek,T (2218)-Pierron,P (2244) ICCF 2014}) 10... exd5 11. dxc5 Bxc5 12. O-O Be6 13. Nb3 Bb6 14. Nfd4 Rg8 15. Qb1 Rg7 16. Rc1 Nxd4 17. Nxd4 Kf8 18. Nb5 {Landero Luna,V (2337)-Ellis, L (2287) ICCF 2014 1/2-1/2 (39)}) (6... Qc3 7. dxc5 (7. O-O d5 8. Re1 c4 9. Bf1 Nc6 10. e4 Nxd4 11. Re3 Nxf3+ 12. Nxf3 Qa5 13. Bxf6 gxf6 14. exd5 Bc5 15. Re4 O-O 16. Bxc4 exd5 17. Bxd5 Bf5 18. Rf4 Bg6 {Koc,Z-Lindqvist,B (2378) ICCF 2008 1/2-1/2 (41)}) 7... Bxc5 8. O-O d5 9. Nd4 Nbd7 10. Nb5 Qa5 11. Nb3 Qb6 12. a4 Be7 13. a5 Qd8 14. f4 a6 15. N5d4 Qc7 16. Qe2 Qc3 17. Rab1 O-O 18. Bh4 { Aupí Royo,J (2057)-Grifoll Miró,J (2240) ICCF 2006 0-1 (64)}) (6... Nd5 7. O-O (7. Rb1 Qxa2 8. Ra1 Qb2 9. Rb1 Qa2 10. Ra1 Qb2 11. Rb1 Qc3 12. O-O h6 13. Bh4 Nc6 14. Nc4 cxd4 15. Nfd2 dxe3 16. fxe3 Nxe3 17. Nxe3 d5 18. Qf3 Ne5 { Kmiecik,K (2219)-Foust,M (2265) ICCF 2008 1-0 (27)}) 7... Nc3 8. Qe1 d5 9. dxc5 Bxc5 10. Nb3 Nd7 11. Nfd2 O-O 12. e4 h6 13. Nc4 dxc4 14. Bc1 Ne2+ 15. Bxe2 Qxc2 16. Nxc5 Nxc5 17. Ba3 b6 18. Qd1 {Fegan,C (1888)-Di Marino,M (2098) ICCF 2004 0-1 (35)}) 7. O-O (7. Rb1 d5 8. Bxf6 gxf6 9. Rb3 Qxa2 10. c4 Na6 11. O-O Be7 12. e4 cxd4 13. exd5 Nc5 14. Nxd4 Kf8 15. Bb1 Qa4 16. d6 Bxd6 17. Ne4 Be7 18. Nxc5 Bxc5 {Muukkonen,K (2410)-Kuosmanen,K (2224) ICCF 2012 1/2-1/2 (42)}) 7... d5 (7... Nc6 8. Bb5 cxd4 9. exd4 Qa5 10. c4 Be7 11. Bxf6 gxf6 12. d5 a6 13. Ba4 Nb4 14. Ne4 b5 15. Qd4 O-O 16. Nxf6+ Bxf6 17. Qxf6 bxc4 18. Rfd1 Nd3 19. Bc2 { Hendricks,R-Meller,E (1868) ICCF 2017 1/2-1/2 (54)}) 8. Bxf6 gxf6 9. dxc5 Bxc5 (9... Nc6 10. e4 Qxc5 11. Rb1 Qd6 12. Qc1 Bg7 13. exd5 Qxd5 14. Ne4 f5 15. Ng3 O-O 16. Nh5 f6 17. Rd1 Qd7 18. Bc4 Qf7 19. Nxg7 Kxg7 20. Nd4 Nxd4 {1/2-1/2 (20) Majer,D-Frigge,P ICCF 2013}) 10. Rb1 (10. e4 Nc6 11. exd5 exd5 12. Re1+ Kf8 13. Nb3 Bb6 14. Qd2 Kg7 15. Qf4 Ne7 16. Nfd4 Ng6 17. Qg3 Rd8 18. Nb5 Qb4 19. Nc7 Bxc7 20. Qxc7 Bd7 21. Qc5 Qxc5 {Kmiecik,K (2218)-Noble,M (2437) ICCF 2006 0-1 (63)}) 10... Nc6 11. e4 Kf8 12. exd5 exd5 13. Rb5 b6 14. Nb1 Qa4 15. Nc3 Qg4 16. Nxd5 Rg8 {Schwarte,J (2331)-Grabner,H (2306) ICCF 2013 1/2-1/2 (40)}) (5. b3 Ne4 (5... Nc6 6. Bxf6 gxf6 7. dxc5 Bxc5 8. Bd3 d5 9. a3 e5 10. b4 Bd6 11. e4 d4 12. O-O Rg8 13. Nbd2 Be6 14. Nh4 Rg4 15. Nf5 Bxf5 16. exf5 Rg7 17. Ne4 { Lines,D-Sanchez,D ICCF 2012 1-0}) 6. Bf4 cxd4 (6... d5 7. Bd3 Nc6 8. dxc5 Bxc5 9. O-O Be7 10. Bxe4 dxe4 11. Nfd2 f5 12. Nc4 Qd8 13. a3 O-O 14. Ra2 b6 15. c3 Ba6 16. Rd2 Qc8 17. Nd6 Bxd6 18. Bxd6 {Neubauer,O (1933)-Cassel,J (1842) ICCF 2015 0-1 (31)}) 7. Nxd4 Bb4+ 8. c3 Nxc3 9. Nxc3 Bxc3+ 10. Ke2 Bxa1 11. Qxa1 f6 12. g3 e5 13. Qc1 Nc6 14. Bg2 Qa6+ 15. Kf3 Qd3 16. Nxc6 e4+ {Williams,R (1316) -Zakharov,O (2290) ICCF 2016 0-1}) 5... Nc6 (5... cxd4 6. exd4 Nc6 7. c3 (7. Be3 d5 8. Be2 Be7 9. O-O O-O 10. h3 Bd7 11. c4 Qa5 12. Nc3 dxc4 13. Bxc4 Rac8 14. Qd2 Rfd8 15. a3 Qh5 16. Be2 h6 17. Ne5 Qf5 18. Bd3 Qh5 {Tavinski,S (1964) -Taner,H (2061) ICCF 2010 0-1 (71)}) 7... d5 8. Bd3 h6 9. Be3 (9. Bxf6 gxf6 10. O-O Bg7 11. Nbd2 e5 12. c4 Nb4 13. Qc3 e4 14. c5 Qa5 15. Bxe4 dxe4 16. Nxe4 O-O 17. Nd6 Nc6 18. Qxa5 Nxa5 19. d5 Rd8 20. Rac1 b6 {Budin,F (2026)-Comien,R (2066) ICCF 2015 1/2-1/2 (63)}) 9... Bd6 10. O-O Qc7 11. Re1 b6 12. a4 Bb7 13. Na3 a6 14. g3 Rd8 15. Qd2 Ra8 16. Nb1 Ne4 17. Qe2 {Caliò,M (2361)-Trent,B (2380) ICCF 2018 1/2-1/2 (32)}) (5... Ne4 6. Bf4 (6. Bh4 d5 7. c3 Bd7 8. Bd3 cxd4 9. exd4 Bb5 10. Bxb5+ Qxb5 11. Qc2 Nc6 12. a4 Qc4 13. Qe2 Qxe2+ 14. Kxe2 h5 15. Nbd2 f6 16. Nxe4 dxe4 17. Nd2 g5 {Plums,U (1722)-Brodt,A (2401) ICCF 2014 0-1 (39)}) 6... d5 (6... Be7 7. h3 d5 8. Be2 O-O 9. O-O Bd7 10. Nbd2 Nxd2 11. Qxd2 Bb5 12. c3 Bxe2 13. Qxe2 Nd7 14. a4 a5 15. Ne5 Nxe5 16. Bxe5 cxd4 17. exd4 Rfc8 18. h4 {Ramos,E (2262)-Bergmanolson,M (2284) ICCF 2016 1/2-1/2 (30)}) 7. c3 Bd7 (7... Bd6 8. Bxd6 Qxd6 (8... Nxd6 9. Bd3 (9. Nbd2 O-O 10. Bd3 Nd7 11. O-O Qc7 12. Qc2 g6 13. Rac1 c4 14. Be2 b5 15. e4 f6 16. exd5 exd5 17. Rfe1 Nb6 18. h3 Bf5 19. Qd1 Na4 20. Rb1 Bxb1 {Maisonneuve,L (1615)-Audie,A (2239) ICCF 2018 0-1}) 9... Bd7 10. O-O O-O 11. b3 h6 12. c4 dxc4 13. bxc4 Bc6 14. Nbd2 Nd7 15. Qa3 Ne8 16. Be2 Nef6 17. Rfd1 Qc7 18. Nb3 Be4 19. Nxc5 Nxc5 20. Qxc5 { Sodomski,A (2228)-Packroff,H (2201) ICCF 2013 1/2-1/2}) 9. Nbd2 O-O 10. Nxe4 dxe4 11. Nd2 f5 12. Nc4 Qc7 13. dxc5 b6 14. cxb6 axb6 15. Qd1 Rd8 16. Qb3 Nd7 17. Qb4 Bb7 18. Qd6 Qxd6 19. Nxd6 {Sepers,G (1984)-Warzecha,H (2249) ICCF 2015 1/2-1/2 (26)}) 8. Nbd2 Nxd2 9. Qxd2 Bb5 (9... cxd4 10. exd4 Bb5 11. Bxb5+ Qxb5 12. a4 Qa6 13. a5 Bd6 14. Bxd6 Qxd6 15. O-O Nc6 16. Ne1 O-O 17. Nd3 Qc7 18. a6 b6 19. Rfe1 Rac8 20. Qg5 Ne7 21. Re3 {Jacquin,R (2477)-Bendaña Guerrero,G (2382) ICCF 2005 1-0 (91)}) 10. Bxb5+ Qxb5 11. a4 Qa6 12. Bg3 Nd7 13. Qe2 Qxe2+ 14. Kxe2 Be7 15. a5 Rc8 16. b4 cxd4 17. a6 {Hitzegrad,J (2346)-Kapustin,A (1984) ICCF 2013 1-0 (57)}) (5... d5 6. Bxf6 gxf6 7. c4 dxc4 8. Bxc4 cxd4 9. exd4 Bg7 10. O-O O-O 11. Nc3 f5 12. Re1 Nc6 13. d5 Nd4 14. Nxd4 Qxd4 15. Bb3 e5 16. Qg5 Qb6 17. Rad1 {Versteeg,A-Mandaji,M ICCF 2020 1/2-1/2 (44)}) (5... Nd5 6. c4 h6 7. cxd5 hxg5 8. Nc3 cxd4 9. Nxd4 Na6 10. Be2 Nc7 11. O-O Bd6 12. h3 Nxd5 13. Nxd5 exd5 14. Qd2 Be5 15. Nf3 Bf6 16. Qxd5 g4 17. Ng5 {Bronnikov,A (2219)-Larsen,S (2449) ICCF 2013 1-0}) (5... Be7 6. dxc5 Qxc5 7. Be2 h6 8. Bh4 Nc6 9. Nbd2 d5 10. O-O O-O 11. c4 Qb6 12. Qc2 Bd7 13. a3 a5 14. b3 Rfd8 15. Rfc1 Be8 16. c5 Qa7 17. Nd4 {Folk Gilsanz,J (2367)-Sirobaba,F (2372) ICCF 2015 1/2-1/2 (83)}) 6. c3 (6. Nc3 cxd4 7. exd4 Nxd4 8. Nxd4 Qxd4 9. Be3 Qb4 10. a3 Qd6 11. Bd3 Be7 12. O-O O-O 13. h3 Qb8 14. Bf4 d6 15. Qe3 a6 16. Ne4 Nd5 17. Qg3 Nxf4 {Mora Collao,F-Popov,V (2039) ICCF 2020 0-1 (41)}) (6. dxc5 Bxc5 7. Bd3 Nh5 (7... d5 8. O-O Ne4 9. Bh4 f5 10. c4 O-O 11. cxd5 Nb4 12. Bc4 Nxd5 13. Nbd2 Bd6 14. Nxe4 fxe4 15. Nd2 Qc7 16. Kh1 Be5 17. Rd1 Bxh2 18. Nxe4 Be5 19. Bxd5 {Tavadyan,T-Bedard,E (1676) ICCF 2016 1-0 (49)}) 8. Nc3 h6 9. Bh4 g5 10. Bg3 Be7 11. Be5 Nxe5 12. Nxe5 Nf6 13. O-O a6 14. a4 Qc7 15. Nf3 g4 16. Nd4 h5 17. Qd2 h4 {Zawadka,Z (2218)-Sanna,P (2324) ICCF 2011 0-1 (62)}) 6... d5 7. Be2 Ne4 8. Bf4 cxd4 9. exd4 Bd6 10. Bxd6 Nxd6 11. O-O f6 12. Nbd2 O-O 13. a4 (13. Re1 Kh8 14. b3 Bd7 15. Qa3 Nb5 16. Qb2 Nd6 17. Rad1 a5 18. Bd3 a4 19. Bb1 axb3 20. axb3 Rfc8 21. Rc1 Ne7 22. Nf1 Rc6 23. Ng3 Qc7 24. Ne2 Rc8 {Greninger,H (2221)-Staak,E (2228) ICCF 2020 1/2-1/2 (28)}) 13... Nf7 14. b4 e5 15. a5 Qd8 16. a6 b6 17. dxe5 fxe5 18. b5 Ne7 19. c4 Be6 20. cxd5 Nxd5 21. Re1 Rc8 22. Qa3 Nc3 23. Bf1 Rc5 24. Qb4 Ng5 25. Nxg5 Qxg5 26. Ne4 Nxe4 27. Rxe4 Bd5 28. Re2 h6 29. Rae1 Qf5 30. Rd2 e4 31. Qd4 Rf7 32. h3 Qg5 33. g3 Qf5 34. h4 Kh8 35. Qe3 Qe5 36. Rd4 Rc2 37. Re2 Rxe2 38. Bxe2 Rc7 39. Bf1 Rc5 40. Kh2 g5 41. hxg5 hxg5 42. Rd1 Kh7 43. Qe2 Kg6 44. Bg2 {1/2-1/2 (44) Latronico,N (2428)-Caliò,M (2352) ICCF 2017} *
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