[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Unusual replies to"] [Black "1 d4"] [Result "*"] [ECO "A40/01"] [Annotator "Iccf GM Matjaz Pirs,3700X"] [PlyCount "102"] {[%evp 0,102,16,20,28,-20,20,13,13,12,47,21,52,35,54,54,45,45,45,15,7,7,6,-53, 48,64,38,28,23,19,11,11,12,6,6,9,21,15,12,12,30,-28,-13,-2,20,30,30,23,39,39, 36,50,33,28,44,-24,45,45,105,85,100,114,87,76,80,80,75,75,76,88,74,79,87,98, 110,110,98,54,72,67,86,101,110,112,101,118,99,110,123,105,121,105,121,121,134, 132,136,132,138,130,161,160,176,176,176]} 1. d4 {[%csl Gb2,Gc3,Gd4,Ge3,Gf2,Gg7] [%CAl Gd4e5,Gf6g7,Gf6g5,Ge5f4,Gc1g5]} e6 (1... e5 2. dxe5 (2. d5 Bc5 3. e4 (3. Nc3 d6 (3... Nf6 4. Bg5 Bxf2+ 5. Kd2 h6 6. Nh3 Bc5 7. Bxf6 Qxf6 8. Ne4 Qb6 9. Nxc5 Qxc5 10. Kc1 O-O 11. Qd2 d6 12. e3 f5 13. a4 a5 14. Ra3 Nd7 15. Rb3 { Robertson,J-Noble,R ICCF 2010 0-1}) 4. Nf3 Nd7 5. e4 Ngf6 6. Bg5 h6 7. Bh4 g5 8. Nxg5 hxg5 9. Bxg5 Rg8 10. h4 Nf8 11. Bb5+ Bd7 12. Qf3 Bxb5 13. Bxf6 Qd7 14. O-O-O Bd4 {Azzoug,S (1672)-Zimmermann,J (1610) ICCF 2012 1/2-1/2 (40)}) (3. e3 d6 (3... f5 4. Be2 d6 5. Nf3 Nf6 6. c4 Qe7 7. O-O a5 8. Nc3 O-O 9. Bd2 Ne4 { 0-1 (9) Miranda,I (2135)-Yatsenko,N (1982) ICCF 2011}) (3... Nf6 4. Ne2 d6 5. Ng3 O-O 6. Be2 Re8 7. O-O Nbd7 8. a3 a6 9. b4 Bb6 10. c4 Nf8 11. Bb2 Ng6 12. Nc3 Qe7 13. Rc1 Bd7 14. Bd3 c6 15. Nf5 {Davis,R-Shannon,P (1934) ICCF 2017 1/ 2-1/2 (39)}) 4. Bc4 Ne7 5. Bd2 O-O 6. Nf3 f5 7. b4 Bb6 8. Bc3 Bd7 9. b5 Ng6 10. O-O e4 11. Nd4 Ne5 12. Ne6 Bxe6 13. Bxe5 dxe5 14. dxe6 Qe7 {Larsson, B-Arvidsson,D (1208) ICCF 2021 1-0 (30)}) 3... h6 (3... d6 4. Nf3 f5 5. Bg5 Nf6 6. Nc3 O-O 7. Bd3 Bb4 8. O-O Bxc3 9. bxc3 Qe8 10. Bxf6 Rxf6 11. Re1 Nd7 12. exf5 Nb6 13. c4 Bxf5 14. Bxf5 Rxf5 15. Nd4 {Catania,D (1868)-Holmes,R ICCF 2008 0-1 (25)}) 4. Nf3 d6 5. c4 (5. Bd3 Nf6 6. O-O O-O 7. h3 Nbd7 8. Qe2 Nb6 9. a3 Nh5 10. b4 Ng3 11. Qe1 Bd4 12. c3 Nxf1 13. cxd4 f5 14. dxe5 fxe4 15. Bxe4 dxe5 16. Nc3 Bf5 {Catania,D (1815)-Holmes,R ICCF 2008 0-1 (48)}) 5... Nf6 6. Nc3 Ng4 7. Be3 Nxe3 8. fxe3 Bxe3 9. Bd3 Bg4 10. Qe2 Bc5 11. h3 Bxf3 12. Qxf3 c6 13. a3 a5 {Catania,D (1815)-Holmes,R ICCF 2008 0-1 (31)}) (2. b3 Nc6 3. Bb2 exd4 4. Nf3 Nf6 5. Nxd4 Bb4+ 6. Nd2 Ne4 7. N4f3 d5 8. Bxg7 Rg8 9. c3 Nxc3 10. Bxc3 Bxc3 11. e3 Qf6 12. Rc1 Bf5 13. Bb5 Rxg2 {Ramdani,D-Tautho,D ICCF 2020 0-1 }) 2... Nc6 (2... d6 3. Nf3 (3. exd6 cxd6 4. Nf3 Qa5+ 5. Nc3 Qe5 6. Nxe5 dxe5 7. Bg5 Bc5 8. Qd8# {1-0 (8) Manca,M-Frate,R ICCF 2018}) 3... Bg4 (3... dxe5 4. Qxd8+ Kxd8 5. Nxe5 Bb4+ 6. c3 Ba5 7. Nxf7+ Ke8 8. Nxh8 Bf5 9. Bf4 Nc6 10. Nd2 Kd7 11. Nf7 Rf8 12. Ne5+ Ke6 13. e3 Nxe5 14. Bxe5 Kxe5 15. Nc4+ {Miller, A-Howard,J ICCF 2014 1-0 (44)}) (3... f6 4. exd6 Bxd6 5. Nc3 Nc6 6. e4 Qe7 7. Bd3 Be6 8. O-O O-O-O 9. Nd5 Qd7 10. c4 Nh6 11. Bxh6 gxh6 12. Nxf6 Qf7 13. Nd5 Rhg8 14. g3 Bg4 15. Be2 {Sandora,J-Acosta,E (1563) ICCF 2021 1-0}) 4. Bg5 (4. Nc3 Nc6 5. Bg5 Be7 6. Bf4 f6 7. exd6 Bxd6 8. Bxd6 Qxd6 9. Qxd6 cxd6 10. O-O-O O-O-O 11. Nd4 Nh6 12. h3 Nxd4 13. Rxd4 Be6 14. e4 Rhe8 15. Nb5 d5 {Dessaules,P (2310)-Nicholls,M (2202) ICCF 2011 1-0}) 4... Qd7 (4... Be7 5. Bxe7 Nxe7 6. exd6 Qxd6 7. Qxd6 cxd6 8. Nc3 O-O 9. O-O-O Rd8 10. Nb5 Nbc6 11. Rxd6 Be6 12. a3 a6 13. Rxd8+ Rxd8 14. Nc3 {1-0 (14) Oppermann,P (2259)-Nicholls,M (2202) ICCF 2011}) 5. Nc3 Nc6 6. exd6 Bxd6 7. Ne4 Bf8 8. e3 Qe6 9. Ned2 h6 10. Bc4 Qg6 11. Bh4 Be7 12. h3 Bxf3 13. Nxf3 Rd8 14. Bd3 {Aralkova,M-Hellström,A ICCF 2020 1-0 (54)}) (2... f6 3. exf6 (3. e4 Nc6 (3... Qe7 4. Nf3 fxe5 5. Nc3 Nc6 6. Nd5 Qd8 7. Ng5 Nf6 8. Bc4 Be7 9. O-O b5 10. Bb3 Nd4 11. f4 Nxb3 12. fxe5 Bc5+ 13. Kh1 Nxc1 14. Nxf6+ Ke7 15. Qd5 {Bevan,P (1990)-Ruffle,A ICCF 2016 1-0}) 4. exf6 Nxf6 5. Bg5 Be7 6. Nc3 Nxe4 7. Nxe4 Bxg5 8. Qh5+ g6 9. Qxg5 Qxg5 10. Nxg5 O-O 11. Bc4+ Kg7 12. Ne2 Re8 13. O-O-O d5 14. Bb5 a6 {Schilleci,C-Fernandez,Q (1455) ICCF 2019 1-0 (30)}) 3... Nxf6 4. e3 (4. Nf3 d5 5. Bg5 Be7 6. Nc3 O-O 7. Bxf6 Bxf6 8. Qxd5+ Qxd5 9. Nxd5 Bxb2 10. Rb1 Na6 11. Rxb2 Rf7 12. e4 c6 13. Ne3 b5 14. a4 bxa4 15. Bc4 a3 {Peletier Bougnon,M-Rouillard,S ICCF 2007 1-0}) 4... d5 5. Nf3 Bg4 6. Be2 Ne4 7. O-O Qf6 8. Qxd5 Nd6 9. Nc3 c6 10. Qd4 Qxd4 11. exd4 Nd7 12. h3 Bxf3 13. Bxf3 O-O-O 14. Bg5 {Jarmuz,F (1868)-Fernandez,Q ICCF 2015 1-0 (37)}) (2... d5 3. e3 (3. e4 Nc6 4. exd5 Nxe5 5. Qe2 Qxd5 6. f4 Ne7 7. Nc3 Qe6 8. Qxe5 Qxe5+ 9. fxe5 Nf5 10. Nd5 Kd8 11. Bg5+ Ke8 12. Nxc7+ Kd7 13. Nxa8 h6 14. Bb5+ Ke6 {Rohleder,M-Dahlstrom,B ICCF 2008 1-0}) (3. Nf3 f6 4. Bf4 g6 5. e3 fxe5 6. Bxe5 c5 7. Bxh8 g5 8. Ne5 b5 9. Bxb5+ Ke7 10. Nc6+ Nxc6 11. Bxc6 Qd6 12. Bxa8 Ke6 13. Qg4+ Kf7 14. Qh5+ Ke6 {Vallens,J-Robledo,R ICCF 2021 0-1}) 3... Bb4+ 4. Bd2 Qe7 5. f4 Nh6 6. Nf3 b6 7. c3 O-O 8. cxb4 Na6 9. Qa4 b5 10. Bxb5 Qe6 11. Nc3 Bb7 12. Nd4 Qg6 13. Bc6 Qxg2 14. O-O-O {Howard,J (1994)-Haws, A (1287) ICCF 2020 1-0}) (2... Qh4 3. Qd3 Nc6 4. Kd1 Nxe5 5. Qe3 Qe7 6. Nf3 Nxf3 7. exf3 Kd8 8. c4 Nf6 9. Nc3 Qb4 10. Bd3 Bc5 11. Qg5 h6 12. Qxg7 Rg8 13. Qxf6+ {Gurevskoi,D-Larin,I (2371) ICCF 2018}) (2... Bb4+ 3. Bd2 Bxd2+ 4. Qxd2 Qe7 5. Nf3 Nc6 6. e3 Nxe5 7. Nxe5 Qxe5 8. Qd4 Qxd4 9. exd4 d5 10. Nc3 Nf6 11. Bd3 O-O 12. O-O Be6 13. Be2 Rad8 14. Nb5 {Lyons,A-Cangelosi,D (1845) ICCF 2019 0-1}) (2... Bc5 3. a3 a5 4. Nf3 Nc6 5. Nc3 f6 6. e4 fxe5 7. Bc4 Nf6 8. Ng5 Rf8 9. O-O d6 10. Nxh7 Nxh7 11. Qh5+ Kd7 12. Qg4+ Ke8 13. Qg6+ Ke7 14. Qxg7+ { Quintero,D-Sanchez Aguirregomezcorta,X (1297) ICCF 2017 1-0}) (2... h6 3. f4 Bc5 4. Nf3 Nc6 5. Nc3 a6 6. e4 d6 7. exd6 cxd6 8. Bc4 Nf6 9. Qd3 O-O 10. a3 b5 11. Bd5 Nxd5 12. Nxd5 f5 13. Ne3 fxe4 14. Qd5+ {Steenlandt,A (1684)-Zdziech,M ICCF 2019 0-1}) 3. Nf3 (3. Bf4 d6 4. exd6 cxd6 5. c4 Nf6 6. Nc3 Be7 7. e4 O-O 8. Bd3 Nd4 9. h3 b6 10. Be3 b5 11. Bxd4 d5 12. cxd5 b4 13. Nce2 a5 14. Nf3 a4 { Kolkman,C (1877)-Chavez,A ICCF 2017 1-0 (25)}) (3. Qd5 d6 4. exd6 Nf6 5. Qd1 Bxd6 6. Nc3 Bf5 7. Nf3 Bc5 8. Bg5 Nb4 9. Rc1 Qxd1+ 10. Kxd1 O-O-O+ 11. Ke1 Nxc2+ 12. Rxc2 Bxc2 13. Bxf6 gxf6 14. e3 Bb4 {Pickles,S (1688)-Berna,S (1732) ICCF 2012 0-1}) (3. e4 Qe7 4. Nf3 Nxe5 5. Nc3 Nf6 6. Be2 c6 7. Bg5 d6 8. O-O Nxf3+ 9. Bxf3 Qe6 10. Re1 Be7 11. Qd3 O-O 12. Rad1 h6 13. Bh4 g5 14. Bg3 Rd8 { Moore,J (1668)-Beckett,P (1850) ICCF 2020 1/2-1/2}) 3... Nge7 (3... d6 4. Bg5 ( 4. exd6 Bxd6 (4... Qxd6 5. Qxd6 Bxd6 6. e3 Bd7 7. b3 Nb4 8. Na3 Nf6 9. Bb2 Nbd5 10. O-O-O Bxa3 11. Bxa3 Nc3 12. Rd3 Nb5 13. Bb2 Ne4 14. Rxd7 Kxd7 15. Bxb5+ c6 16. Bd3 {Evans,D (1714)-Drury,P (1433) ICCF 2020 1-0 (29)}) 5. Nc3 (5. e3 a6 ( 5... Bg4 6. Be2 Nf6 7. O-O Bxf3 8. Bxf3 O-O 9. c4 Qd7 10. Nc3 {1-0 (10) Martínez Muñoz,J (1620)-Pfluegl Hernáez,A ICCF 2017}) 6. a3 Nf6 7. Be2 O-O 8. O-O Re8 9. b3 b5 10. Bb2 Bb7 11. h3 Ne5 12. Nxe5 Rxe5 13. Bxe5 Bxe5 14. Ra2 Qd6 15. Qxd6 cxd6 16. c3 Ne4 {Reyes Cortés,R (1626)-Sanchez Aguirregomezcorta,X (1297) ICCF 2017 1-0 (31)}) 5... Nf6 (5... a6 6. g3 Nf6 7. Bg2 O-O 8. O-O h6 9. Nd5 Nxd5 10. Qxd5 Be6 11. Qd1 Qf6 12. c3 Rfd8 13. Re1 Bxg3 14. Qc2 Bd6 15. e4 Qg6 16. Qe2 Bg4 17. e5 {Procházková,M (1711)-Nilsson,E (1764) ICCF 2015 0-1 (29)}) 6. Nb5 (6. Bg5 Be6 7. Nb5 h6 8. Nxd6+ cxd6 9. Bxf6 Qxf6 10. c3 O-O 11. e3 Rfe8 12. Be2 Rad8 13. O-O Bf5 14. Re1 d5 15. Qb3 Qe7 16. Rad1 a6 17. Nd4 Bh7 {Tornaboni,C (2024)-Carrettoni,A (2017) ICCF 2020 1-0 (59)}) 6... Bb4+ (6... O-O 7. Nxd6 cxd6 8. Bg5 h6 9. Bh4 g5 10. Bg3 Qb6 11. Qc1 Bf5 12. c3 Rfe8 13. Nxg5 Nd4 14. Nf3 Nc2+ 15. Kd1 Ng4 16. Nd4 Nxd4 17. cxd4 Rac8 18. Qd2 {Verdier, P (2093)-Sossai,S ICCF 2009 0-1}) 7. c3 Qxd1+ 8. Kxd1 Ba5 9. Bf4 Nd5 10. Bg3 Bf5 11. e3 O-O-O 12. Nbd4 Rhe8 13. Bb5 Nxd4 14. cxd4 Re6 15. Ba4 c6 {Stefanov, P (2297)-Kaytazki,L (1548) ICCF 2021 1-0}) (4. Bf4 Bg4 (4... dxe5 5. Qxd8+ Nxd8 6. Bxe5 Ne6 7. Nc3 Bb4 8. a3 Bxc3+ 9. Bxc3 {1-0 (9) Demesa Maus,E-Benabdallah, A ICCF 2011}) 5. Nc3 Bxf3 6. exf3 dxe5 7. Qe2 Bd6 8. Be3 Nge7 9. O-O-O O-O 10. g4 Ng6 11. h4 Nd4 12. Bxd4 exd4 13. Rxd4 Bf4+ 14. Rxf4 Nxf4 15. Qe3 Nd5 { Stock,G (1975)-Lanier,N ICCF 2008 1-0 (43)}) 4... Be7 (4... Qd7 5. exd6 Bxd6 6. Nc3 (6. Nbd2 f6 7. Be3 Nge7 8. Ne4 Nd5 9. Bc1 Be7 10. e3 Nb6 11. Qxd7+ Bxd7 12. a3 f5 13. Nc3 Be6 14. Bb5 O-O-O 15. b3 Bf6 16. Bb2 f4 17. e4 Bg4 {Koch,H (2336) -Baroin,B (2204) ICCF 2012 1/2-1/2 (63)}) 6... f6 (6... h6 7. Bh4 Nge7 8. Bg3 Nf5 9. Qd2 Nxg3 10. hxg3 O-O 11. O-O-O a6 12. Kb1 b5 13. Ne4 Qe6 14. Nxd6 Rd8 15. e4 Rxd6 16. Bd3 Bb7 17. Qc3 Rad8 18. Rde1 {Tudor,V (2279)-Pavlicu,S (2108) ICCF 2015 1-0 (42)}) 7. Bh4 Nge7 8. e4 O-O 9. Bc4+ Kh8 10. Bg3 Qg4 11. O-O Rd8 12. Bxd6 Rxd6 13. Qe2 Ng6 14. h3 Qh5 15. Qe3 Bxh3 {0-1 (15) Manchenko, I-Bautista,E (1524) ICCF 2020}) 5. Bxe7 Ngxe7 6. exd6 cxd6 7. Nc3 Qb6 8. Rb1 O-O 9. e3 d5 (9... Bf5 10. Bd3 Bxd3 11. cxd3 Rac8 12. O-O Ne5 13. d4 Nxf3+ 14. Qxf3 Rc4 15. Rfd1 Rd8 16. Qe4 Rc7 17. Qh4 d5 18. a3 h6 19. h3 Qb3 20. Rdc1 Rdc8 21. Qg4 {Carbajal,C (2316)-Traxler,A ICCF 2007 1-0 (42)}) 10. Bd3 g6 11. O-O Rd8 12. h3 d4 13. exd4 Nxd4 14. Nxd4 Rxd4 15. Re1 {Iñiguez,M (2342)-Carvaga,R (2105) ICCF 2009 1-0 (45)}) (3... g6 4. e4 Bg7 5. Bg5 f6 (5... Nge7 6. Nc3 b6 7. Bf6 O-O 8. Qd2 d6 9. O-O-O Bb7 10. Bxg7 Kxg7 11. exd6 Ng8 12. Nb5 Qd7 13. Nxc7 Rad8 14. e5 Nh6 15. Qc3 Kg8 16. Nd5 Nf5 17. Nf6+ {Bas Fortuny,M (1915) -Wiesbrock,H ICCF 2017 1-0 (25)}) 6. exf6 Bxf6 7. Qd2 h6 8. Bxf6 Qxf6 9. Nc3 d6 10. O-O-O Be6 11. Nd5 Bxd5 12. exd5 Nce7 13. Bb5+ Kd8 14. Rhe1 a6 15. Re6 { Barrera González,N-Rodriguez,E ICCF 2016 1-0}) (3... h6 4. Nc3 g5 5. e4 Bg7 ( 5... g4 6. Nd4 Nxe5 7. Bf4 d6 8. Qd2 a6 9. O-O-O Ng6 10. Be3 Bg7 11. h3 N8e7 12. Be2 c5 13. Nb3 gxh3 14. gxh3 b6 15. Qxd6 Bb7 16. Na4 Qxd6 17. Rxd6 { Niziolek,J (2005)-Meneghetti,J (1951) ICCF 2020 1/2-1/2}) 6. Be3 g4 7. Nd4 h5 8. h3 Nxe5 9. Nf5 Bf6 10. Nd5 c6 11. Bc5 Ng6 12. Nd6+ Kf8 13. Nxb7+ Kg7 14. Nxd8 Bxb2 15. Bd4+ {Hulst,B (1583)-Vaessen,J (1143) ICCF 2020 1-0}) (3... Bb4+ 4. c3 Bc5 (4... Be7 5. e4 f6 6. Bc4 Nh6 7. Bxh6 gxh6 8. Ng5 hxg5 9. Qh5+ Kf8 10. Qf7# {1-0 (10) Fischer,R-Whittle,P (1219) ICCF 2019}) 5. Bg5 f6 6. exf6 gxf6 7. Bh4 h5 8. e3 d5 9. Nbd2 Qd6 10. Be2 Rh6 11. Qc2 b5 12. Bxb5 f5 13. O-O-O Re6 14. Qxf5 Re5 15. Qxe5+ {Hurn,R (1974)-Elksnis,O ICCF 2020 1-0}) (3... d5 4. Bf4 Bg4 (4... f6 5. e3 fxe5 6. Nxe5 Nxe5 7. Bxe5 Nf6 8. c4 Bb4+ 9. Nc3 O-O 10. cxd5 Qxd5 11. Qxd5+ Nxd5 12. Bc4 Be6 13. O-O-O Nf4 14. Bxf4 Bxc4 15. Rd4 Bxc3 16. Rxc4 {Langgood,S-Zdziech,M ICCF 2019 1-0 (50)}) (4... Nge7 5. Nc3 d4 6. Nb5 Nd5 7. Bd2 Bc5 8. c3 dxc3 9. Nxc3 O-O 10. e3 Nxc3 11. bxc3 Bg4 12. Be2 Bxf3 13. gxf3 Nxe5 14. Qc2 Qh4 15. O-O Qg5+ 16. Kh1 {Cox,R (1731)-Lawrence, S (1971) ICCF 2019 1-0 (42)}) 5. e3 g6 6. h3 Bxf3 7. Qxf3 Bg7 8. Nc3 Nge7 9. O-O-O Nxe5 10. Bxe5 Bxe5 11. Nxd5 Nxd5 12. Rxd5 Qe7 13. Bc4 {1/2-1/2 (13) Freire,D (1856)-Simplina,R ICCF 2020}) (3... Bc5 4. Nc3 (4. b3 Nge7 5. Bb2 O-O 6. e3 Ng6 7. Bd3 d6 8. exd6 cxd6 9. O-O {1-0 (9) Reyes Cortés,R (1626)-Pfluegl Hernáez,A ICCF 2017}) 4... f6 (4... Nge7 5. Bg5 O-O 6. e3 f6 7. Bc4+ d5 8. exd6+ Kh8 9. dxe7 Qxe7 10. Bf4 Bg4 11. h3 Bxf3 12. Qxf3 b5 13. Qxc6 Bb4 14. Bxb5 g5 15. O-O-O Rad8 16. Bxc7 {Stefanov,V-Chavez,A ICCF 2017 1-0}) 5. Bf4 d6 6. exd6 cxd6 7. e3 Nge7 8. Ne4 Nf5 9. Nxc5 Qa5+ 10. c3 Qxc5 11. e4 Nfe7 12. Bxd6 Qb6 13. Bc4 Bg4 14. h3 Bh5 15. g4 {Weggen,R (1839)-Knouse,C ICCF 2013 1-0 (25)}) (3... b6 4. e4 Bb7 5. Nc3 Bb4 6. Bd2 h6 7. Bd3 Qe7 8. O-O Nxe5 9. Nxe5 Qxe5 10. Re1 O-O-O 11. Qf3 f6 12. Re2 Bd6 13. g3 Ne7 14. Bf4 Qe6 15. Nb5 { Thistlewood,A (1636)-Drury,P (1435) ICCF 2020 0-1 (30)}) (3... Qe7 4. Bf4 (4. Nc3 Nxe5 5. e4 (5. Nxe5 Qxe5 6. g3 (6. Qd5 Qxd5 (6... f6 7. Qxe5+ fxe5 8. Nd5 Bd6 9. Bg5 c6 10. Nc3 Bb4 11. Bd2 Nf6 12. f3 d5 13. a3 Bc5 14. O-O-O O-O 15. Na4 Bd6 16. e3 b5 17. Nc3 b4 18. axb4 {Perry,W (2279)-Shannon,P (1934) ICCF 2018 1/2-1/2 (48)}) (6... Bd6 7. e4 Nf6 8. Qc4 g5 9. g3 c6 10. Bg2 b5 11. Qe2 b4 12. f4 gxf4 13. gxf4 Qh5 14. Qxh5 Nxh5 15. Ne2 Ba6 16. e5 Be7 17. Be3 Bh4+ 18. Kd2 {Khokhlova,G (1944)-Lysovsky,V (2016) ICCF 2016 0-1 (50)}) 7. Nxd5 Bd6 8. Bd2 Ne7 9. Nxe7 Bxe7 10. Bc3 O-O 11. e3 a5 12. g3 Bb4 13. Bxb4 axb4 14. Bg2 c6 15. O-O b5 16. Rfd1 d5 17. Rd4 Bf5 {Lucena Cifré,R (1535)-Arvidsson,D (1257) ICCF 2019 0-1 (46)}) (6. Nd5 Nf6 7. Nxf6+ Qxf6 8. e3 Bb4+ 9. c3 Bc5 10. Be2 O-O 11. O-O d6 12. Qb3 Qg6 13. Bf3 Rb8 14. Qd5 Bg4 15. b4 Bb6 16. a4 c6 17. Qd1 f5 {McLaughlin,E (1681)-Lasley,M (1913) ICCF 2012 1-0 (48)}) 6... Bb4 7. Bd2 Nf6 8. Bg2 c6 9. O-O O-O 10. a3 Ba5 (10... Be7 11. Bf4 Qe6 12. Qd3 d5 13. Rad1 Rd8 14. Qf3 Ng4 15. e4 d4 16. Ne2 c5 17. h3 Ne5 18. Bxe5 Qxe5 19. c3 Be6 20. cxd4 cxd4 21. Nf4 Bc4 22. Nd3 {Avery,B (1835)-Holmes,R ICCF 2009 0-1 (34)}) 11. e3 d5 12. b4 Bb6 13. Na4 Bg4 14. Qe1 Ne4 15. h3 Nxd2 16. Qxd2 Bc8 {Gilbert,R (1682)-White,R (1640) ICCF 2020 0-1 (38)}) (5. Nd5 Nxf3+ 6. gxf3 Qd8 (6... Qc5 7. Nc3 Nf6 8. e4 Be7 9. Rg1 O-O 10. Bh6 {1-0 (10) Gillen,S (1707)-Bowling,E ICCF 2014}) 7. Bg5 (7. Bf4 d6 8. Qd2 Be6 9. e3 c6 10. Nc3 Qa5 11. a3 d5 12. b4 Qd8 13. Rd1 Nf6 14. e4 dxe4 15. Qxd8+ Rxd8 16. Rxd8+ Kxd8 17. fxe4 Be7 18. h4 Kd7 {Greco,T-Shannon,P (1934) ICCF 2018 1/2-1/2 (57)}) 7... Qxg5 (7... f6 8. Bf4 d6 9. e4 Ne7 10. Nxe7 Bxe7 11. Bc4 c6 12. Qd2 g5 13. Be3 b5 14. Bb3 f5 15. h4 f4 16. Bd4 Bf6 17. hxg5 Be5 18. Bxe5 dxe5 19. Qxd8+ {Antonov,V-Kaczmarek,S ICCF 2008 1-0 (26)}) 8. Nxc7+ Kd8 9. Nxa8 Nf6 10. c3 Qf4 11. Qb3 Bc5 12. Qb5 b6 13. Bg2 Re8 14. e3 Bb7 15. O-O-O Qg5 16. Qf1 Bxa8 {Lund,S-Holmes,R ICCF 2009 0-1 (37)}) (5. Bf4 d6 (5... Nxf3+ 6. gxf3 d6 7. e4 Be6 8. Qd2 g6 9. O-O-O Bg7 10. Kb1 a6 11. Nd5 Qd7 12. Qa5 Bxd5 13. Qxd5 Ne7 14. Qxb7 Rd8 15. Bxa6 O-O 16. Bb5 Qh3 17. Qxc7 {Taylor,K (2024)-Michas,J (1813) ICCF 2018 1-0 (45)}) 6. e4 Nf6 7. Qd4 Nxf3+ 8. gxf3 Nh5 9. Be3 c6 10. O-O-O Qh4 11. Kb1 Be7 12. Be2 Be6 13. Rhg1 Nf4 14. Qxg7 O-O-O 15. Bxa7 Bf6 16. Qg3 Qh6 {Steinman,A-Holmes,R ICCF 2009 0-1 (27)}) 5... c6 (5... Nxf3+ 6. Qxf3 Qf6 (6... c6 7. Bf4 {1-0 (7) Król, P (1660)-Krizanec,T ICCF 2017} (7. Bc4 b5 8. Bb3 b4 9. Nd1 Nf6 10. Bg5 Qe5 11. Bxf6 Qxf6 12. Qxf6 gxf6 13. O-O Ba6 14. Re1 Bd6 15. Ne3 Be5 16. Rab1 Bc8 17. Ng4 h5 18. Nxe5 fxe5 {Roberts,G (1751)-Michas,J (1579) ICCF 2016 0-1 (53)})) ( 6... d6 7. Bf4 f5 8. Bd3 fxe4 9. Qxe4 Nf6 10. Qxe7+ Bxe7 11. O-O-O Ng4 12. Rd2 Be6 13. Re1 O-O 14. Rxe6 Rae8 15. Nd5 Nxh2 16. Bxh2 Bg5 17. Rxe8 Rxe8 18. Nf4 { Greco,T-Cangelosi,D (1845) ICCF 2020 1-0}) (6... g6 7. Bc4 Bg7 8. O-O d6 9. Nd5 Qd8 10. Rb1 Be6 11. Bd2 c6 12. Rfe1 Ne7 13. Ne3 O-O 14. Bxe6 fxe6 15. Qh3 e5 16. Rbd1 Qb6 {0-1 (16) Henderson,F-Arvidsson,D (1285) ICCF 2019}) 7. Qxf6 Nxf6 8. e5 Ng4 9. Nd5 Rb8 (9... d6 10. Be2 dxe5 11. Bxg4 Bxg4 12. Nxc7+ {1-0 (12) Lyons,B-Shaffer,A ICCF 2017}) 10. Nxc7+ Kd8 11. Nd5 Nxe5 12. Bf4 d6 13. O-O-O f6 14. Be3 b6 15. f4 Nc6 16. Bb5 Bb7 17. Rhe1 {Lines,D-Zimmermann,J (1610) ICCF 2012 1-0 (28)}) (5... Nf6 6. Bg5 (6. Be2 d6 7. Bg5 (7. O-O Bd7 8. Bg5 Qd8 9. Qd2 Be7 10. Nxe5 dxe5 11. Rad1 c6 12. f4 h6 13. Bh4 Be6 14. fxe5 Qxd2 15. Rxd2 Nd7 16. Bg3 h5 17. h3 Bd8 18. Rfd1 h4 {Bystrický st.,K (1907)-Nicholls,M (2244) ICCF 2010 0-1 (61)}) 7... c6 8. O-O Bd7 9. Bxf6 gxf6 10. Re1 O-O-O 11. Nxe5 fxe5 {0-1 (11) Lavery,T-Lasley,M (1913) ICCF 2012}) (6. Bf4 Nxe4 7. Bxe5 Nxc3 8. Qd3 Nxa2 9. Rxa2 f6 10. Qe3 fxe5 11. Qxe5 d5 12. Qxe7+ Bxe7 13. Bd3 O-O 14. O-O g6 15. Re1 Bd6 16. Raa1 Kg7 17. h3 Bxh3 {Gómez Cortés,M-Krowicka,A ICCF 2018 1/2-1/2 (36)}) 6... c6 7. Be2 (7. Nxe5 Qxe5 8. f4 Qe6 9. Qf3 Bb4 10. O-O-O Bxc3 11. Qxc3 Qxa2 12. Bxf6 gxf6 13. Bc4 Qa4 14. Kb1 Ke7 15. Rhe1 b5 16. Bb3 Qa6 17. e5 f5 18. e6 {1-0 (18) Zorr,S (2349)-Zimmermann,J (1610) ICCF 2012} ) 7... h6 8. Bh4 g5 9. Bg3 Nxf3+ 10. Bxf3 d6 11. Qd4 c5 12. Qe3 Bg7 13. O-O-O O-O 14. Bxd6 Qd8 15. Bxc5 Qa5 16. Bxf8 Bxf8 17. e5 {Guerassimov,A-Gonet Boisson,G ICCF 2008 1-0}) (5... f5 6. Nd5 Qd6 7. Bf4 Nxf3+ 8. gxf3 Qc5 9. Nxc7+ Kf7 10. Nxa8 fxe4 11. c3 d5 12. fxe4 Nf6 13. e5 Ne4 14. Be3 {1-0 (14) Blondel, F-Gonet Boisson,G ICCF 2009}) 6. Be2 (6. Nxe5 Qxe5 7. f4 Qa5 8. Bd2 Bc5 9. Qf3 d6 10. Bd3 Ne7 11. f5 Qc7 12. f6 gxf6 13. Qxf6 Ng6 14. Rf1 Qe7 15. Bg5 Qxf6 16. Bxf6 Rg8 17. O-O-O Bg4 {Dee,J-Shannon,P (1934) ICCF 2017 0-1 (36)}) 6... Nxf3+ (6... Nf6 7. O-O (7. Nd4 g6 8. f4 Nc4 9. Bxc4 d5 10. Be2 dxe4 11. Be3 Bg7 12. O-O O-O 13. Qe1 Re8 14. Qh4 c5 15. Nb3 b6 16. Rad1 Be6 17. h3 h6 18. g4 Rad8 { Stallinga,H (1943)-Lasley,M ICCF 2010 1-0 (25)}) 7... d6 8. Re1 (8. Nd4 Ng6 9. Re1 Qc7 10. Nf5 Bxf5 11. exf5 Ne5 12. f4 Ned7 13. Bf3+ Kd8 14. Be3 d5 15. Qd2 Kc8 16. Rad1 Nb6 17. Bd4 Nc4 18. Qf2 Qxf4 19. Bxf6 Bd6 {Król,P (1660)-Nilsson, E (1788) ICCF 2017 1-0 (32)}) 8... Nxf3+ 9. Bxf3 Be6 (9... Nd7 10. Bg4 Nb6 11. Bxc8 Rxc8 12. Bf4 Qf6 13. Bg3 Nd7 14. Qd2 Be7 15. Re2 O-O 16. Rae1 Rcd8 17. a4 Ne5 18. b3 Qg5 19. Qxg5 Bxg5 20. f4 Be7 21. fxe5 {Roberts,G (1765)-Michas,J (1789) ICCF 2018 1-0 (25)}) 10. Nd5 Qd8 11. Bg5 Be7 12. Nxe7 Qxe7 13. Qd3 h6 14. Bh4 g5 15. Bg3 g4 16. Bxd6 Qd7 17. Be2 O-O-O 18. Be5 {Englund,J (1884) -Michas,J (1789) ICCF 2019 1-0 (31)}) (6... d6 7. Bf4 (7. O-O Qc7 8. Nd4 Nf6 9. f4 Ned7 10. Be3 Nc5 11. Bf3 Bd7 12. a3 Ne6 13. Qe2 c5 14. Ndb5 Qb6 15. a4 Bxb5 16. axb5 Be7 17. e5 dxe5 18. fxe5 Nd7 {Knöppel,B (2069)-Nilsson,E (1720) ICCF 2018 1-0 (27)}) 7... Be6 (7... Bd7 8. Qd4 f6 9. O-O-O g5 10. Be3 c5 11. Qd2 Bc6 12. Nxe5 Qxe5 13. Nb5 b6 14. h4 h6 15. hxg5 fxg5 16. f4 Qe6 17. Nc7+ {1-0 (17) Sesko,M (2235)-Zimmermann,J (1610) ICCF 2012}) 8. O-O Nxf3+ 9. Bxf3 O-O-O 10. Qd4 a6 11. Qa7 Qc7 12. Rfd1 Qb8 13. Qd4 h6 14. e5 d5 15. Nxd5 Ne7 16. Nb6+ Kc7 17. Nd7 Rxd7 18. Qxd7+ {Schmidt,H-Valverde López,M (2059) ICCF 2006 1-0}) 7. Bxf3 d6 (7... d5 8. O-O dxe4 9. Nxe4 Be6 10. Bf4 Rd8 11. Qe2 Nf6 12. Bg5 h6 13. Bxf6 gxf6 14. Rad1 f5 15. Rxd8+ Kxd8 16. Rd1+ Kc7 17. Nc3 Rg8 18. Qe5+ Kc8 19. Qa5 {Kok,H (1739)-Michas,J (1755) ICCF 2020 1/2-1/2 (44)}) (7... g6 8. Qd4 Qf6 9. e5 c5 10. Qe3 Qd8 11. Nd5 Nh6 12. Nf6+ Ke7 13. Qd3 d6 14. Bg5 Qa5+ 15. c3 Kd8 16. Nxh7+ {1-0 (16) Grube,F (2193)-Zimmermann,J (1610) ICCF 2012}) 8. O-O Qe5 9. Be3 (9. Re1 Ne7 10. g3 Ng6 11. Bg2 Be7 12. Be3 O-O 13. Bd4 Qa5 14. f4 f5 15. a3 fxe4 16. Bxe4 Bf5 17. b4 Qc7 18. Qd3 Bxe4 19. Nxe4 d5 20. Nc5 Bxc5 { Blumberg,D-Shannon,P (1934) ICCF 2020 1/2-1/2 (45)}) 9... Ne7 10. Be2 Ng6 11. f4 Qa5 12. Qd4 Bd7 (12... h5 13. h3 h4 14. Rad1 Qc7 15. a4 Bd7 16. b4 b6 17. b5 Rc8 18. Rc1 Qb7 19. bxc6 Bxc6 20. a5 Bd7 21. Rb1 Qc7 22. Nb5 Qb7 23. axb6 axb6 24. Nxd6+ {Sylvester,G-Holmes,R ICCF 2009 1-0 (35)}) 13. Rad1 c5 14. Qd2 Be7 15. e5 O-O {Kleine,L (1995)-Shannon,P (1934) ICCF 2018 1-0 (33)}) (4. Qd5 f6 ( 4... Nb4 5. Qb3 d5 (5... Qe6 6. Na3 Qg6 7. c3 Nc6 8. Nb5 Kd8 9. Bf4 Na5 10. Qa4 Nc6 11. h4 d6 12. h5 Qg4 13. Rd1 Bd7 14. exd6 Bxd6 15. Rh4 Qe6 16. Bxd6 cxd6 17. Nxd6 {Hermansen,R (2052)-Arvidsson,D (1412) ICCF 2018 1-0}) 6. a3 Nc6 7. Nc3 Nxe5 8. Nxd5 Nxf3+ 9. gxf3 Qd6 10. Bf4 Qg6 11. Nxc7+ Ke7 12. Qb4+ Kf6 13. Qd4+ Ke7 14. Rd1 {1-0 (14) Pawlowski,R-Arvidsson,D (1377) ICCF 2018}) (4... d6 5. exd6 cxd6 (5... Qxd6 6. Qxd6 Bxd6 7. e3 Nf6 8. Bb5 Bd7 9. O-O O-O 10. Bxc6 Bxc6 11. Nbd2 Ne4 12. Nd4 Nxd2 13. Bxd2 Bd7 14. Rfd1 Rfe8 15. a4 a6 16. c4 Rad8 17. Bc3 {Adamson,T (1589)-Nilsson,E (1788) ICCF 2017 1/2-1/2 (31)}) 6. Bg5 f6 7. Bh4 Bg4 8. Nc3 Bxf3 9. gxf3 a6 10. a3 Qe5 11. Qxe5+ dxe5 12. O-O-O Nd4 13. f4 Rc8 14. Bh3 Rc7 15. fxe5 Nc6 16. Nd5 {Echevarría González,R (1637) -Arvidsson,D (1267) ICCF 2020 1-0}) 5. exf6 Nxf6 6. Qb3 d5 (6... Qb4+ 7. Qxb4 ( 7. c3 Qxb3 8. axb3 d6 9. Na3 a6 10. Nb5 Kd8 11. Bf4 h6 12. e3 Rb8 13. Nbd4 Nxd4 14. Nxd4 Nh5 15. Bg3 Nxg3 16. hxg3 Be7 17. O-O-O c6 18. Bc4 Kc7 {Wittenstein,S (1696)-Nilsson,E (1720) ICCF 2018 1-0 (55)}) 7... Nxb4 8. Na3 c6 9. c3 Nbd5 10. Nc4 Bc5 11. Nce5 O-O 12. e3 d6 13. Nd3 Bb6 14. Be2 Bd7 15. O-O Rae8 16. c4 Ne7 17. Bd2 Ne4 18. Bb4 {Lewis,J (1616)-Lasley,M (1913) ICCF 2012 1-0 (50)}) (6... b6 7. Bf4 d5 8. e3 Bb7 9. Nc3 O-O-O 10. O-O-O Na5 11. Qa4 Qb4 12. Qxb4 Bxb4 13. Nb5 Ne4 14. Nxa7+ Kb8 15. Nb5 Rd7 16. Ne5 Re7 17. Nd3 Bc5 18. f3 {Andersson,S (2138)-Nilsson,E ICCF 2014 1-0 (44)}) (6... d6 7. Nc3 Qe6 8. e4 Qxb3 9. axb3 Nb4 10. Ra4 a5 11. Nb5 Kd8 12. c3 Nc6 13. Ng5 Rg8 14. Bc4 d5 15. Nf7+ Ke7 16. exd5 {1-0 (16) Fagerström,M-Heino,J (1837) ICCF 2007}) 7. Bg5 (7. Nc3 Bd7 (7... Qb4 8. Bd2 Qxb3 9. axb3 Bb4 10. Nb5 Bxd2+ 11. Nxd2 Kd8 12. e3 Bf5 13. c3 Kd7 14. Be2 a6 15. Na3 Rad8 16. O-O g5 17. Nf3 Rhg8 18. Nd4 Nxd4 19. exd4 { Cencetti,A (1763)-Holmes,R ICCF 2008 0-1 (38)}) 8. a3 (8. Qxb7 Rb8 9. Qxc7 Qc5 10. Qf4 Bd6 11. Qe3+ Qxe3 12. fxe3 O-O 13. a3 a5 14. g3 Bf5 15. Nd4 Nxd4 16. exd4 Bxc2 17. Bg2 Be4 18. Bxe4 dxe4 19. O-O Bc7 {Theis,B (1714)-Schulze,P (2030) ICCF 2017 0-1 (26)}) (8. Nxd5 Nxd5 9. Qxd5 Nb4 10. Qc4 Bf5 11. Nd4 Qe4 12. e3 O-O-O 13. Bd3 Nxd3+ 14. Qxd3 Rxd4 15. Qxd4 Qxg2 16. Rf1 Bh3 17. Qc4 Bb4+ 18. Bd2 Bxd2+ 19. Kxd2 Rd8+ {Fausey,V (1741)-Holmes,R ICCF 2009 0-1}) 8... Na5 9. Qa2 Be6 10. Nd4 Bg8 11. b4 Nc6 12. Nxc6 bxc6 13. Qb2 Be6 14. Bf4 a5 15. bxa5 Rxa5 16. e3 Rxa3 17. Bd3 Qb4 18. Qxa3 Qxa3 {Manaenkov,V (2323)-Nicholls,M (2198) ICCF 2010 1/2-1/2 (32)}) (7. a3 Nd8 8. Be3 c6 9. Nbd2 Ne6 10. h3 Qf7 11. g4 Nc5 12. Qc3 Nfe4 13. Qe5+ Be7 14. Ng5 Nxg5 15. Bxc5 h5 16. Rg1 hxg4 17. hxg4 b6 18. Qxe7+ Qxe7 {Hernáez Fernández,C (2242)-Nicholls,M (1993) ICCF 2008 1-0 (50)}) 7... d4 (7... Bd7 8. Nc3 (8. Nbd2 O-O-O 9. O-O-O Kb8 10. e3 h6 11. Bxf6 Qxf6 12. Be2 Be7 13. Kb1 Bf5 14. Bd3 Be6 15. a3 Rhf8 16. Rhe1 Bc5 17. Qa4 Bd7 18. Qb5 Qd6 19. Qb3 Bb6 {Marconi,R (2096)-Holmes,R ICCF 2010 1-0 (60)}) (8. c3 O-O-O 9. e3 h6 10. Bxf6 Qxf6 11. Qxd5 Be7 12. Qb3 Rhf8 13. Nbd2 g5 14. h3 h5 15. O-O-O g4 16. hxg4 hxg4 17. Ne4 Qg6 18. Nfd2 a6 19. f4 gxf3 {Engels,J (1914) -Faber,K (2019) ICCF 2020 1/2-1/2 (27)}) 8... Na5 9. Qa3 Qxa3 {0-1 (9) Eeckhout,J (1812)-Gonet Boisson,G ICCF 2008}) 8. Nbd2 Bd7 (8... h6 9. Bxf6 Qxf6 10. O-O-O Bd7 11. e3 O-O-O 12. Bb5 dxe3 13. Qxe3 Kb8 14. Ne4 Qf7 15. Bxc6 bxc6 16. Ne5 Qf5 17. Ng3 Qg5 18. f4 Qf6 19. Rxd7 {1-0 (19) Minte,D-Zimmermann,J (1618) ICCF 2012}) 9. O-O-O (9. e3 O-O-O 10. O-O-O Na5 11. Qd3 Qf7 12. Kb1 dxe3 13. Qxe3 Nc6 14. Bc4 Qh5 15. Bxf6 gxf6 16. h3 Bc5 17. Qe2 Rhe8 18. Qf1 Kb8 19. g4 Qg6 20. a3 Bb6 {Coburn,A (1597)-Potter,M ICCF 2014 1-0 (26)}) 9... O-O-O 10. e4 h6 (10... Na5 11. Qd3 Qd6 12. e5 Qe6 13. exf6 Qxa2 14. f7 Qa1+ 15. Nb1 Bb4 16. Bxd8 Rxd8 17. Qxd4 Nc6 18. Qxg7 Be6 19. Bb5 Ba2 20. Qg4+ Kb8 21. Rxd8+ Nxd8 22. Qxb4 {Nouveau,L (1902)-Gonet Boisson,G ICCF 2009 1-0}) 11. Bxf6 Qxf6 12. Bb5 (12. h3 Bd6 13. Kb1 Rhf8 14. a3 Bf4 15. Qa4 Kb8 16. Be2 Rfe8 17. Rhf1 a6 18. Ka1 h5 19. g3 Bh6 20. Ng1 Bxd2 21. Rxd2 Rxe4 22. Qb3 Re5 23. Nf3 Na5 { Watson,H-Holmes,R ICCF 2009 0-1 (34)}) (12. h4 Bd6 13. Kb1 Rhe8 14. Bc4 Na5 15. Qd3 Bg4 16. Bb3 Nxb3 17. Nxb3 c5 18. Rde1 b6 19. Nbd2 Bf4 20. Nf1 Qf7 21. b3 Kb8 22. N3h2 Be6 23. Qf3 c4 {Deskin,G-Holmes,R ICCF 2009 1-0 (55)}) 12... Bc5 13. Qc4 Bb6 14. Qe2 a6 15. Bc4 Rhe8 {Marconi,R (2100)-Holmes,R ICCF 2009 1-0 (53)}) (4. g3 Nxe5 5. Nxe5 (5. Bg2 Nf6 (5... Nxf3+ 6. Bxf3 c6 7. b3 Qf6 8. c3 d5 9. Bb2 Bh3 10. Nd2 Bd6 11. Qc2 Be5 12. O-O-O Ne7 13. e4 O-O 14. exd5 cxd5 15. Bxd5 Nxd5 16. Ne4 Qc6 17. Ng5 {Anderson,L (1021)-Nilsson,E (1772) ICCF 2017 0-1 (29)}) 6. O-O d5 7. Bg5 Nxf3+ 8. Bxf3 Bh3 9. Re1 O-O-O 10. Qd4 Qb4 11. Bxf6 Qxe1# {0-1 (11) Stuart,P-Holmes,R ICCF 2009}) 5... Qxe5 6. Bg2 (6. Bf4 Qxb2 7. Nd2 Qb6 8. e3 Nf6 9. Bg2 Bb4 10. O-O Bxd2 11. Qxd2 Nh5 12. Be5 d6 13. Bxg7 Nxg7 14. c4 Qc5 15. Qc3 O-O 16. Qd3 Rb8 17. Be4 f5 {Anderson,L (1021) -Arvidsson,D ICCF 2017 0-1 (30)}) 6... c6 7. O-O d5 8. Nc3 (8. e4 dxe4 9. Bxe4 Be7 10. Re1 Qc7 11. Bf4 Qb6 12. Bd3 Be6 13. Nd2 Nf6 14. Nc4 Qd8 15. Qe2 O-O 16. Rad1 Qe8 17. Nd6 Bxd6 18. Bxd6 Bg4 19. f3 Qxe2 {Young III,W (1976)-Holmes,R ICCF 2008 1-0 (29)}) 8... Nf6 9. e4 Bg4 (9... dxe4 10. Nxe4 Nxe4 11. Bxe4 Be6 12. Re1 Qa5 13. c3 Rd8 14. Qg4 h5 15. Qf5 Qc5 16. Qf3 Be7 17. Be3 Qa5 18. b4 Qa3 19. Bd4 Rxd4 20. cxd4 Qxf3 21. Bxf3 {Novak,L-Craciun,G (2150) ICCF 2006 1-0 (44)}) 10. Qd3 dxe4 11. Nxe4 Nxe4 12. Re1 Be6 13. Bxe4 Qd6 14. Qxd6 Bxd6 15. Bf5 Bc5 {Gliga,R-Beckett,P (1875) ICCF 2020 1-0 (38)}) (4. Bg5 Qc5 (4... Qb4+ 5. Nc3 Be7 (5... Nge7 6. e4 (6. Bd2 Nd4 7. e4 c6 8. Nb5 Qc5 9. Nd6+ Kd8 10. Nxd4 b6 11. Nxf7+ Ke8 12. Nd6+ Kd8 13. b4 Qxd4 14. c3 {1-0 (14) Horváth, J-Arvidsson,D (1223) ICCF 2019}) 6... Qxb2 7. Nb5 Kd8 8. Bd2 a6 9. Bc3 { 1-0 (9) Emourlov,E-Arvidsson,D (1285) ICCF 2019}) (5... Qa5 6. a3 Nxe5 7. Bf4 Nxf3+ 8. exf3 g6 9. Qd4 f6 10. O-O-O c5 11. Qe4+ Ne7 12. Bc4 h5 13. Nd5 f5 14. Nf6+ Kd8 15. Rxd7+ Bxd7 16. Qxb7 {1-0 (16) Kaupat,T (1563)-Arvidsson,D (1190) ICCF 2021}) (5... h6 6. Bd2 Qe7 7. e4 Nxe5 8. Nd5 Nxf3+ 9. Qxf3 Qd6 10. Bf4 { 1-0 (10) Lang,F (1845)-Arvidsson,D (1404) ICCF 2018}) 6. a3 Qa5 (6... Qxb2 7. Bd2 a6 8. e4 b5 9. Ra2 {1-0 (9) Gierden,H-Nilsson,E ICCF 2014}) 7. b4 Bxb4 8. axb4 Qxb4 9. Bd2 Qc5 10. e4 Nxe5 11. Nd5 Nxf3+ 12. gxf3 f5 13. Bb4 Qc6 14. Qd4 Nf6 15. Qe5+ {1-0 (15) Vilhelmsson,I (2123)-Arvidsson,D (1239) ICCF 2020}) ( 4... Qe6 5. Nc3 (5. e4 d6 6. Nc3 dxe5 7. Nb5 Bd6 8. Be3 Qe7 9. Nxd6+ cxd6 10. Bd3 f5 11. Bg5 Nf6 12. Qe2 fxe4 13. Bxe4 Be6 14. c4 Qf7 15. Bxc6+ bxc6 16. c5 Bc4 {Justesen,A (2284)-Nicholls,M (1993) ICCF 2008 0-1 (26)}) 5... Bb4 6. Bd2 d5 7. Nb5 Qe7 8. c3 Ba5 9. Bf4 Bd7 10. Qxd5 Be6 11. Qd3 Rd8 12. Nbd4 Nxd4 13. Nxd4 a6 14. Qe4 Bc8 15. e3 c5 16. Nf5 {Ganguli,T-Michas,J (1813) ICCF 2018 1-0 (50)}) (4... f6 5. exf6 Nxf6 6. Nc3 Ne5 7. Qd4 Nc6 8. Qh4 h6 9. O-O-O a6 10. e4 Ne5 11. Bxf6 Nxf3 12. Bxe7 Nxh4 13. Bxh4 g5 14. Bg3 d6 15. Nd5 Kd8 16. h4 { Lundberg,K (2203)-Arvidsson,D (1239) ICCF 2020 1-0}) 5. Be3 Qa5+ 6. Bd2 (6. Nc3 Nxe5 7. Nxe5 Qxe5 8. Bd4 Qa5 9. e4 d6 10. Bc4 Nf6 11. O-O Be7 12. Re1 (12. f4 Be6 13. Nd5 Bxd5 14. exd5 O-O 15. Re1 Rae8 16. c3 c5 17. dxc6 bxc6 18. Kh1 d5 19. Bd3 c5 20. Be5 g6 21. Be2 Rd8 22. Bf3 Ne4 23. Bxe4 dxe4 {Piqueras Jiménez, M (1908)-Hernández Delgado,J (2023) ICCF 2020 1/2-1/2 (45)}) 12... O-O 13. e5 Ne8 14. Nd5 Bd8 15. a4 Qxe1+ 16. Qxe1 c6 17. Nf4 dxe5 {Thys,H (1819)-Nilsson,E (1772) ICCF 2017 1-0}) 6... Qc5 7. Bc3 (7. e4 Nxe5 8. Nc3 Nxf3+ 9. Qxf3 Nf6 10. O-O-O d6 11. e5 Ng4 12. e6 Bxe6 13. Qxb7 Rc8 14. Re1 Kd8 15. Rxe6 fxe6 16. Ba6 Ke7 17. Qxc8 g6 18. Bb5 Nf6 {Campani,P (1587)-Nilsson,E (1724) ICCF 2018 1-0}) 7... Nge7 8. a3 Ng6 9. b4 Qe7 10. Qd5 Nf4 11. Qe4 Ng6 12. Nbd2 a5 13. b5 Nd8 14. g3 Ne6 15. h4 h5 {Mozelius,P (2296)-Nilsson,E (1720) ICCF 2018 1-0 (42)}) ( 4. e3 Nxe5 5. c4 (5. Nxe5 Qxe5 6. Qd4 Qxd4 7. exd4 b6 8. Bf4 d6 9. Nc3 Bb7 10. Bb5+ c6 11. Bd3 Nf6 12. O-O g6 13. Rfe1+ Kd7 14. Re2 Bg7 15. Rae1 Rhe8 16. Rxe8 Rxe8 {Cook,P (1679)-Wilshusen,H (1648) ICCF 2015 1/2-1/2}) 5... Nxf3+ 6. Qxf3 Nf6 7. Nc3 c6 8. Be2 g6 9. e4 Bg7 10. Be3 Qb4 11. Bd4 d5 12. Bxf6 Bg4 13. Qd3 Bxe2 14. Kxe2 Bxf6 15. Qc2 Qxc4+ {Rice,R (1361)-Arvidsson,D (1412) ICCF 2018 0-1 (56)}) (4. a3 Nxe5 5. Nxe5 Qxe5 6. Nc3 Nf6 7. Qd3 Bd6 8. Be3 O-O 9. Qd4 Qa5 10. Qa4 Qe5 11. Qd4 Qf5 12. Qd3 Qxd3 13. exd3 Re8 14. O-O-O Ng4 15. Be2 Nxe3 { Hardwick,M (1181)-Arvidsson,D (1285) ICCF 2019 0-1}) (4. c3 Nxe5 5. Nxe5 Qxe5 6. Nd2 Nf6 7. Nf3 Qa5 8. Bf4 d5 9. e3 Be7 10. Bd3 c5 11. O-O O-O 12. h3 Be6 13. Qe2 Qb6 14. Rad1 h6 15. Rfe1 a5 {Stuart,P-Holmes,R ICCF 2009 0-1 (32)}) (4. e4 Nxe5 5. Bf4 Qb4+ 6. Nbd2 Nxf3+ 7. gxf3 d6 8. a3 Qxb2 9. Nb3 Be6 10. Bc1 Qe5 11. Nd4 a6 12. f4 Qxe4+ 13. Ne2 Qxh1 14. Kd2 Qxh2 15. Bb2 Qxf2 {Anderson,L (1052) -Nilsson,E (1788) ICCF 2017 0-1}) 4... Qb4+ (4... d6 5. exd6 cxd6 (5... Qf6 6. Bg5 (6. Qc1 Bxd6 7. Bxd6 Qxd6 8. Qd2 Qe7 9. Nc3 Nf6 10. O-O-O O-O 11. Qf4 Be6 12. e3 Rfd8 13. Be2 h6 14. a3 a6 15. Ne5 Nd5 16. Nxd5 Bxd5 17. Nxc6 Bxc6 { Beavan,R (1833)-Holmes,R ICCF 2010 1/2-1/2 (35)}) 6... Qxb2 7. dxc7 f6 8. Bxf6 Nxf6 9. Nbd2 Nb4 10. Nc4 Nxc2+ 11. Qxc2 Qxc2 12. e3 Qc3+ 13. Nfd2 Qxa1+ 14. Ke2 Qxa2 15. g3 Be6 16. Ke1 Bxc4 17. Bxc4 {Paulus,K (1533)-Esposito,L (1559) ICCF 2018 0-1 (31)}) 6. e3 Nf6 7. Nc3 Bg4 8. Be2 O-O-O 9. h3 Bf5 10. a4 Nb4 11. Nd4 Be4 12. Nxe4 Qxe4 13. O-O h6 14. Bf3 Qe7 15. Qe2 g5 16. Qc4+ {Gibbons,A-White, R (1659) ICCF 2015 1-0 (28)}) 5. Bd2 (5. Nc3 Qxf4 6. Nd5 Qa4 (6... Qe4 7. Nxc7+ Kd8 8. Nxa8 Nb4 9. Rc1 Nxa2 10. Rb1 Nb4 11. c3 b6 12. cxb4 Bxb4+ 13. Nd2 Bb7 14. Nxb6 axb6 15. e3 Qxe5 16. Qa4 Qd6 17. Rd1 Nf6 18. Qc2 {Hrubý,T (2022) -Nicholls,M (2198) ICCF 2010 0-1 (29)}) 7. Nxc7+ Kd8 8. Nxa8 Nxe5 9. Nxe5 Qa5+ 10. c3 Qxe5 11. Qb3 Qb8 12. Qxf7 Nh6 13. Qd5 Qxa8 14. O-O-O Be7 15. e4 Qb8 16. Bb5 Qc7 {Primrose,J (1955)-Beckett,P (1875) ICCF 2020 1-0 (56)}) (5. Nbd2 Qxf4 6. e3 Qb4 7. Bd3 Qxb2 8. O-O Nxe5 9. Rb1 Nxf3+ 10. Nxf3 Qxa2 11. Ra1 Qd5 12. c4 Qc5 13. Qe1 Nf6 14. Ra5 Qc6 15. Re5+ Be7 16. Nd4 Qd6 {Anderson,L (1193)-Michas, J (1638) ICCF 2015 0-1 (26)}) 5... Qxb2 (5... Qe7 6. Nc3 Nxe5 7. Nd5 Nxf3+ 8. gxf3 Qd8 9. Ba5 b6 10. Bc3 c6 11. e4 Bb7 12. Ne3 Qc7 13. Qd3 O-O-O 14. O-O-O Kb8 15. e5 Ne7 16. Rg1 Ng6 17. Nc4 {Thys,H (1768)-Nilsson,E (1727) ICCF 2015 1/ 2-1/2 (52)}) 6. Nc3 (6. Bc3 Bb4 7. a3 (7. Qd3 Bxc3+ 8. Qxc3 Qc1# {0-1 (8) Drury,P (1433)-Beckett,P (1850) ICCF 2020}) (7. Nfd2 Bxc3 8. Nxc3 Qxc3 9. Rb1 Nxe5 10. Rb3 Qa5 11. e3 Qxa2 12. f4 Nc6 13. Bd3 d5 14. O-O Nge7 15. Qc1 Qa5 16. c4 Nb4 17. Qc3 c5 18. Qxg7 Rg8 {Thys,H (1819)-Michas,J (1803) ICCF 2017 1/2-1/ 2 (81)}) (7. Bxb4 Nxb4 8. Na3 Qxa3 9. Rc1 Nxa2 10. Rb1 Nc3 11. Ra1 Qb2 12. Qc1 Qxc1+ 13. Rxc1 a5 14. e3 Ne7 15. Bd3 b6 16. O-O Ba6 17. Rfe1 Ncd5 18. Be4 O-O { Takahashi,Y (1446)-Arvidsson,D (1223) ICCF 2019 1-0 (44)}) 7... Bxc3+ 8. Nxc3 Qxc3+ 9. Nd2 Nxe5 10. g3 (10. e4 Nf6 11. Bd3 Nxd3+ 12. cxd3 Qxd3 13. Qf3 Qxf3 14. gxf3 d5 15. O-O-O Be6 16. e5 Nh5 17. Nb3 c5 18. Nxc5 Rc8 19. Kb2 Rxc5 20. Rd3 Nf4 21. Rc3 Rxc3 {Hardwick,M (1214)-Perkins,K ICCF 2020 0-1 (39)}) 10... Nc4 11. Rb1 Nxa3 12. Rc1 a5 13. Bg2 Nc4 14. e3 Nf6 15. Ke2 Nb2 16. Nb1 Qc4+ 17. Ke1 Nxd1 {Walters,B (1571)-Michas,J (1579) ICCF 2016 0-1}) 6... Bb4 (6... Nb4 7. Nd4 c6 (7... Qa3 8. Ncb5 Qa5 9. a3 Qb6 10. axb4 c6 11. c4 cxb5 12. c5 Bxc5 13. bxc5 Qxc5 14. Nf5 Qxe5 15. Bb4 Qxf5 16. Qd6 Kd8 17. Qf8+ {1-0 (17) Rose, S-Arvidsson,D (1404) ICCF 2018}) (7... c5 8. Rb1 Qa3 9. Ndb5 Qa5 10. a3 (10. Nd5 Qxb5 11. Nc7+ {1-0 (11) Salmelin,A-Arvidsson,D (1404) ICCF 2018}) 10... a6 11. axb4 cxb4 12. Ra1 Qd8 13. Ne4 d5 14. exd6 Bf5 15. Nc7+ Kd7 16. Nc5+ Kxd6 17. Nxb7+ {1-0 (17) Emmons,A-Arvidsson,D (1270) ICCF 2020}) 8. Rb1 (8. e3 Qa3 9. Rb1 Qa5 10. f4 d5 11. exd6 Bxd6 12. Ne4 Be7 13. Bc4 Nf6 14. Nxf6+ gxf6 15. O-O h5 16. a3 Qc5 17. Bxf7+ Kxf7 18. Bxb4 Qc4 19. Bxe7 Kxe7 {Bester,A-Perkins, K ICCF 2020 1-0 (28)}) 8... Qa3 9. Rb3 (9. Ne4 a6 10. Rb3 Qa5 11. Nf5 Qxa2 12. Nfd6+ Bxd6 13. Nxd6+ Kd8 14. Bxb4 {1-0 (14) Thys,H (1720)-Arvidsson,D (1295) ICCF 2019}) 9... Qa5 10. a3 Na6 (10... Nd5 11. Ncb5 Qd8 12. e4 Nb6 13. Nd6+ Bxd6 14. exd6 Nf6 15. Nf5 O-O 16. Rg3 Nxe4 17. Rxg7+ Kh8 18. Rxh7+ Kxh7 19. Qh5+ Kg8 20. Bc3 f6 21. Qg6+ {1-0 (21) Cordes,T-Nilsson,E ICCF 2014}) 11. Ncb5 Qd8 12. Nd6+ Bxd6 13. exd6 Nc5 14. Re3+ (14. Rf3 Ne6 15. Bc3 f6 16. e4 Nh6 17. Nf5 Nf7 18. Nxg7+ Nxg7 19. Bxf6 Qa5+ 20. Bc3 Qg5 21. Rg3 {1-0 (21) Cusicanqui, M (2380)-Zimmermann,J (1610) ICCF 2012}) 14... Kf8 15. Nf5 Ne6 16. Bc3 Nf6 17. Qa1 Rg8 18. Rg3 {Lokander,M (1747)-Nilsson,E ICCF 2014 1-0 (26)}) (6... Qa3 7. Nb5 Qc5 8. Nxc7+ Kd8 9. Nxa8 Nb4 10. c3 Nd5 11. e4 Nxc3 12. Qc2 {1-0 (12) Kennedy,J-Arvidsson,D (1404) ICCF 2018}) (6... Bc5 7. Rb1 Qa3 8. Rb3 Qa5 9. Rb5 Qa3 10. Nb1 Nd4 11. Nxa3 Nxb5 12. Nxb5 {1-0 (12) Jakobsson,M (1948)-Arvidsson, D (1239) ICCF 2020}) 7. Rb1 (7. Nd5 Bxd2+ 8. Kxd2 Kd8 9. Qb1 Qa3 10. Qb3 Qa5+ 11. c3 Nge7 12. e4 Ng6 13. Ne3 Ncxe5 14. Qd5 Qxd5+ 15. exd5 d6 16. Ng5 c6 17. dxc6 bxc6 18. Be2 f6 {Thomas,G-Holmes,R ICCF 2008 0-1 (34)}) (7. Ne4 Bxd2+ 8. Nexd2 Nxe5 9. Nxe5 Qxe5 10. e3 d5 11. Bd3 Nf6 12. Nf3 Qd6 13. Nd4 c6 14. c4 Qb4+ 15. Ke2 dxc4 16. Bc2 O-O 17. a3 Qe7 18. h3 Rd8 {Jokipii,G (1333)-Berna,S (1732) ICCF 2012 0-1}) 7... Qa3 (7... Qxc3 8. Bxc3 Bxc3+ 9. Nd2 Bxe5 10. e3 Nf6 11. Be2 d5 12. O-O O-O 13. Nb3 Ne4 14. Qxd5 Nc3 15. Qf3 a5 16. Bd3 Bf6 17. Bf5 Bxf5 18. Qxf5 Rfd8 19. Rbe1 {Verbiest,J (1718)-Faber,K (1984) ICCF 2020 1-0 (50)}) 8. Nd5 (8. Rb3 Qa5 9. a3 Bxc3 10. Bxc3 Qc5 11. e3 Nge7 (11... a6 12. Bd3 Nge7 13. O-O Ng6 (13... h6 14. e6 f6 15. Nd2 dxe6 16. Ne4 Qd5 17. Bxf6 O-O 18. c4 Qd8 19. Bc3 e5 20. Qc2 Kh8 21. f4 b6 22. Ng3 Qd6 23. f5 Ng8 24. Be4 Bb7 25. Bd5 {Boschma,B (2383)-Nicholls,M (2237) ICCF 2011 1-0 (35)}) 14. e6 f6 15. exd7+ Bxd7 16. Bd4 Qd6 17. Nh4 Be6 18. Rxb7 Nxd4 19. exd4 O-O-O 20. Rb4 Nxh4 21. d5 Bxd5 22. Qg4+ f5 23. Qxh4 {Haak,G (2120)-Nicholls,M (1902) ICCF 2006 1-0 }) 12. Bd3 Ng6 13. O-O Ngxe5 14. Nxe5 Nxe5 15. Be2 d6 (15... f6 16. Bb4 Qb6 17. f4 Nf7 18. a4 c5 19. Ba3 Qd6 20. Bf3 Qxd1 21. Rxd1 d6 22. Bxb7 Bxb7 23. Rxb7 O-O 24. Rdb1 Rfe8 25. Kf2 a5 26. g4 h5 27. gxh5 {Pitkänen,J (1846)-Nicholls,M (2055) ICCF 2009 1/2-1/2 (47)}) 16. Bd4 Qa5 17. Rb5 Qxa3 18. Qd2 Qa2 19. Bxe5 dxe5 {Hatchett,P-Nilsson,E (1788) ICCF 2017 1-0}) 8... Ba5 (8... Bxd2+ 9. Qxd2 Kd8 (9... Qxa2 10. Rd1 Kd8 11. Ng5 Nh6 12. e6 f6 13. exd7 Bxd7 14. Nc3 Qa5 15. Qxd7# {1-0 (15) Seker,M-Michas,J ICCF 2013}) 10. Qg5+ (10. e4 Nge7 11. Ng5 (11. Bb5 Nxd5 12. Bxc6 bxc6 13. exd5 cxd5 14. Ng5 Re8 15. O-O Qc5 16. Qd3 a5 17. Rfe1 Ba6 18. Qxh7 Qf8 19. Qf5 Qe7 20. Nxf7+ Kc8 21. Qf3 Bc4 22. e6 dxe6 { Malyshev,V (2188)-Nicotera,A (1983) ICCF 2020 1-0 (29)}) 11... Rf8 12. Nxh7 Re8 13. Nc3 Nxe5 14. f4 Ng4 15. Be2 Nh6 16. e5 Qc5 17. Rb5 Qc6 18. O-O a6 19. Rb3 Rh8 20. Ng5 f6 21. Nge4 Nhf5 {Sisák,R (2286)-Nicotera,A (1983) ICCF 2020 1-0 (33)}) (10. Ng5 Nh6 11. e4 Qa5 12. c3 Nxe5 13. f4 Ng6 14. Ne3 Re8 15. Bc4 f6 16. Ne6+ Rxe6 17. Bxe6 Nxf4 18. Bf5 b6 19. Rd1 d6 20. O-O Ng6 21. Kh1 Nxf5 { Wildboar,M-Berlin,H ICCF 2012 0-1 (47)}) 10... Nge7 11. Nxe7 Nxe7 12. Qxg7 Qa5+ 13. Nd2 Rg8 14. Qxf7 Qxe5 15. g3 d5 16. Bg2 Be6 17. Qxh7 Bf5 18. Qh5 Rh8 19. Qg5 Rg8 20. Qe3 {Iriarte Gómez,E (2244)-Morales Pecino,B (2343) ICCF 2007 1-0 (51)}) (8... Qa5 9. Nxb4 Nxb4 10. Bxb4 Qxa2 11. e3 Ne7 12. Rb3 a5 13. Bxe7 Kxe7 14. Nd4 a4 15. Rc3 Qb2 16. Nf5+ Kd8 17. Qd4 Qb6 18. Qh4+ f6 19. Nxg7 Rf8 20. Bd3 {Hauser,D-Traxler,A (1905) ICCF 2008 1-0}) 9. Rb5 (9. e4 Nge7 10. Rb5 Nxd5 11. exd5 Bxd2+ 12. Qxd2 Ne7 13. d6 cxd6 14. exd6 Nc6 15. Bc4 O-O 16. O-O b6 17. Rg5 Qb2 18. Qf4 Nd8 19. Ne5 {1-0 (19) Hauser,D-Holmes,R ICCF 2008}) 9... Bxd2+ (9... Bb6 10. Rxb6 axb6 11. Nxc7+ Kd8 12. Nxa8 Qxa8 13. Qb1 Ke8 14. e4 Nge7 15. Bb5 Ng6 16. Qb2 Qb8 17. a4 Ngxe5 18. Bxc6 Nxf3+ 19. gxf3 bxc6 20. Qxg7 Rf8 21. Bh6 {Zordick,M-Crnilovic,G (1579) ICCF 2016 1-0 (28)}) 10. Qxd2 Kd8 11. e4 (11. Ng5 Nh6 12. f4 Qxa2 (12... a6 13. Rb3 Qxa2 14. Rc3 Ne7 15. Nxc7 Ra7 16. Kf2 b5 17. Qd6 Qa5 18. Nge6+ fxe6 19. Nxe6+ Ke8 20. Nxg7+ Kd8 21. Ra3 Ng4+ 22. Kg1 Qe1 23. Qb6+ Rc7 24. Rd3 {Stepanov,V (2332)-Nicotera,A (1983) ICCF 2020 1-0 (48)}) 13. e3 (13. Nc3 Qa3 14. e3 Re8 15. Bc4 Qe7 16. O-O a6 17. Nd5 Qf8 18. Rb3 Ra7 19. Rd1 a5 20. Rd3 Nxe5 21. fxe5 {1-0 (21) Ackley,P (2062)-Beckett,P (1875) ICCF 2020}) (13. e4 Qa1+ 14. Kf2 Qd4+ 15. Qxd4 Nxd4 16. Rc5 c6 17. Ne3 b6 18. Rc3 Ne6 19. Nh3 b5 20. g4 a5 21. g5 Ng8 22. f5 Nc7 23. Nf4 Ne7 24. Be2 h6 { Hey,B-Shannon,P (1934) ICCF 2019 0-1 (42)}) 13... Qa1+ 14. Kf2 Ng4+ (14... f6 15. Bc4 Qxh1 16. Ne6+ dxe6 17. Nxc7+ Ke7 18. Qd6+ Kf7 19. Bxe6+ Bxe6 20. Qxe6+ Kf8 21. exf6 Qa1 22. Qd6+ Kg8 23. Rg5 g6 24. Qe6+ Nf7 25. Nxa8 Qa3 26. Rd5 { Pilarska,L-Nicholls,M (2244) ICCF 2010 1-0 (33)}) 15. Kg1 Nh6 16. h3 a6 17. Rc5 Qa3 18. Rc3 Qa5 19. e4 (19. Kh2 Ra7 20. Be2 Ne7 21. e4 b6 22. Nxe7 Kxe7 23. Qd4 Rg8 24. Rd1 Ke8 25. Rc6 Ke7 26. f5 {1-0 (26) Pototschnig,M (1865)-Nicholls,M (2206) ICCF 2011}) 19... Ra7 20. Qf2 Ke8 21. Kh2 Ng8 22. Rc5 b5 {Cottegnie,F (2424)-Nicholls,M (2237) ICCF 2011 1-0 (28)}) 11... a6 (11... Qxa2 12. Qc3 a6 13. Bc4 Qa4 14. Rc5 b5 (14... b6 15. e6 (15. O-O bxc5 16. Ra1 Qxa1+ 17. Qxa1 h6 18. Nf4 Nge7 19. Bxf7 Rb8 20. g3 Rb4 21. e6 Rh7 22. exd7 Bxd7 23. Nd3 Rb5 24. Bc4 Ra5 25. Qc3 Ke8 26. Nfe5 g5 {Parmet,D-Nicholls,M (2206) ICCF 2011 1-0 (27)} ) 15... Nf6 16. exf7 bxc5 17. Nxf6 Ke7 18. Nd5+ Kf8 19. O-O Qa5 20. Qe3 Qa4 21. Bb3 Qa5 22. Qf4 c4 23. Bxc4 d6 24. Nd4 Nxd4 25. Qh4 Nc6 26. Nf4 {Offenborn,H (2371)-Nicholls,M (2237) ICCF 2011 1-0 (27)}) 15. O-O b4 16. Qd2 h6 17. Bb3 Qa3 18. Rxc6 Ne7 19. Nxe7 Kxe7 20. Rxc7 Qa5 21. Qd6+ Kd8 22. e6 fxe6 23. Nd4 { Cumming,D (2286)-Noble,R ICCF 2010 1-0 (26)}) (11... h6 12. Be2 a6 13. Rb3 Qa5 14. Rc3 Nge7 15. O-O Re8 16. Nd4 Nxd5 17. exd5 Qxd5 18. Rxc6 Rxe5 19. Bf3 Qxa2 20. Qf4 d6 21. Rc3 Rb8 22. Bc6 {1-0 (22) Billinger,W (2290)-Langheld,W (2170) ICCF 2020}) 12. Rb3 (12. Qg5+ Nge7 13. Nxe7 Nxe7 14. Rb3 Qxa2 15. Qxg7 Rg8 16. Qxh7 Qxc2 17. Rd3 Qc1+ 18. Rd1 Qc3+ 19. Rd2 Qc1+ 20. Ke2 Ke8 21. Nd4 Qc4+ 22. Ke1 Qc5 23. Nf5 Qxe5 {Mostowik,P (2047)-Nicholls,M (2055) ICCF 2009 0-1 (36)}) 12... Qxa2 13. Be2 (13. Qg5+ Nge7 14. Qxg7 Rg8 15. Qxh7 Qxc2 16. Rd3 Re8 17. Nf6 Qc1+ 18. Rd1 Qc3+ 19. Nd2 Rf8 20. Qg7 Ng6 21. Be2 Nd4 22. Nh7 Ne6 23. Qf6+ Ke8 24. Bh5 Rg8 {Steinbacher,T-Gall,B ICCF 2016 1-0 (36)}) 13... Qa1+ 14. Bd1 Qa5 15. Qxa5 Nxa5 16. Ng5 Nh6 17. Rh3 Rf8 18. Nxh7 Re8 (18... Rg8 19. g4 d6 20. exd6 cxd6 21. Rh5 Nc4 22. Nhf6 Rf8 23. Be2 b5 24. Bxc4 {1-0 (24) De la Calle,I (2302)-Valverde López,M (2059) ICCF 2006}) 19. f4 (19. Ng5 Rf8 20. f4 d6 21. Rd3 Rb8 22. Be2 Nc6 23. c3 dxe5 24. f5 Na7 25. f6 gxf6 26. Nxf6+ Ke7 27. Nd5+ Kd8 28. O-O c6 29. Rf6 cxd5 30. Rxd5+ Ke7 {Ivanov,V (2342)-Nicholls,M (2237) ICCF 2011 1-0 (65)}) 19... Nc4 20. Be2 b5 21. Rg3 Rg8 22. Bxc4 bxc4 23. O-O Bb7 24. Ra1 a5 25. Ng5 a4 26. Rga3 Bxd5 27. exd5 Ke7 28. Ne4 Rgb8 29. Rxa4 Rxa4 30. Rxa4 Rb2 31. h3 Rxc2 32. Ra7 Re2 33. Ng3 Rd2 34. Rxc7 Rxd5 35. Rxc4 d6 36. Rc7+ Kd8 37. exd6 Rxd6 38. Rc5 g6 39. Re5 Ra6 40. Re1 Ra4 41. Ne4 Nf5 42. Ng5 Nd6 43. g3 Ra2 44. Kf1 f6 45. Ne4 Nxe4 46. Rxe4 Kd7 47. Re2 Ra8 48. Kg2 Ra3 49. g4 Ra4 50. Kf3 Ra1 51. f5 {1/2-1/2 (51) Efremov,A (2171)-Nicholls,M (2055) ICCF 2009 Unusual replies to-1 d4}) 4. Nc3 Ng6 5. Bg5 Be7 6. Bxe7 Ncxe7 (6... Qxe7 7. Nd5 Qd8 8. Qd2 Rb8 (8... O-O 9. Qg5 d6 10. Qxd8 Rxd8 11. Nxc7 dxe5 12. Nxa8 Nb4 13. Rc1 Bf5 14. e4 Bxe4 15. Nd2 Nxa2 16. Ra1 Nb4 17. Rxa7 Nf4 18. Nb6 Nxc2+ 19. Kd1 Nb4 20. Ra8 {Mataix Arbona,C (1940)-Domenche Redondo,F (1804) ICCF 2019 1-0}) (8... h6 9. Qc3 O-O 10. O-O-O Re8 11. Rg1 a5 12. g4 b5 13. g5 h5 14. e3 b4 15. Qc5 b3 16. axb3 a4 17. b4 a3 18. bxa3 Rxa3 19. Kb2 Ra8 20. Bd3 { Schwarz,R-Dojcinovic,M (1778) ICCF 2012 1-0 (35)}) 9. Rd1 O-O 10. Qg5 Qxg5 11. Nxg5 Ncxe5 12. Nxc7 b5 13. Nf3 Bb7 14. Nxe5 Nxe5 15. Nd5 Rfe8 16. e3 Nc4 17. Bxc4 bxc4 18. b3 {Wicklund-Hansen,G (2059)-Andreassen,E (2314) ICCF 2006 1/2-1/ 2 (38)}) 7. h4 Nc6 8. Qd2 O-O 9. h5 Ngxe5 10. h6 d6 11. hxg7 Re8 12. O-O-O (12. Ng5 Nb4 13. O-O-O Ng4 14. Nxh7 Kxg7 15. Qd4+ Kg6 16. Qxb4 Rh8 17. e3 Ne5 18. f4 Nc6 19. Qc4 {1-0 (19) Corkum,T (2291)-Blomquist,G (2313) ICCF 2021}) 12... Ng4 13. e4 {Cousins,R (2328)-Blomquist,G (2313) ICCF 2021 1-0}) (1... Nc6 2. d5 (2. Bg5 f6 3. Bh4 d5 4. e3 (4. f4 Nh6 5. Nf3 Nf5 6. Bf2 e6 7. c3 Bd6 8. g3 Qe7 9. Nbd2 e5 10. fxe5 fxe5 11. dxe5 Nxe5 12. Nxe5 Bxe5 13. Bg2 c6 14. O-O O-O 15. e4 Nh6 {McLaughlin,E (1681)-Disque,P ICCF 2013 1-0 (60)}) 4... Nh6 5. c4 e6 6. Bg3 Bb4+ 7. Nc3 O-O 8. Nf3 Nf5 9. Qc2 Nce7 10. Bd3 dxc4 11. Bxc4 Nd5 12. a3 Bxc3+ 13. bxc3 c5 {Singeisen,H (2058)-Welti,M (1884) ICCF 2008 1-0 (37)}) (2. Nf3 g6 (2... e6 3. Bf4 (3. c3 Nh6 4. Bxh6 gxh6 5. e3 Qf6 6. Nbd2 Be7 7. Qc2 b6 8. Bd3 Rg8 9. g3 d5 10. O-O-O a5 11. e4 dxe4 12. Bxe4 Ba6 13. Bxc6+ Kf8 14. Bxa8 Be2 { Gionfriddo,M (1810)-Greenhill,C ICCF 2014 1-0}) 3... f6 4. e3 e5 5. Bg3 Nge7 6. d5 Nxd5 7. Be2 Bd6 8. Nbd2 O-O 9. Nf1 Bb4+ 10. c3 Ba5 11. Qxd5+ Rf7 12. O-O-O Kf8 {0-1 (12) Pereyra,D (1584)-Whittle,P (1349) ICCF 2017}) (2... Nf6 3. Bf4 ( 3. d5 Nb4 (3... e6 4. dxc6 bxc6 5. Nc3 d6 6. e4 Be7 7. Be2 Bd7 8. O-O e5 9. Qd3 Rb8 10. b3 d5 11. Nxe5 Be6 12. Nxc6 Qc8 13. Nxd5 Rb7 14. Ndxe7 Bd7 15. Nxc8 { Züger,A-Sweetland,D (1323) ICCF 2016 1-0 (30)}) 4. a3 Na6 (4... Nbxd5 5. c4 Nb6 6. c5 Nbd5 7. e4 Nxe4 8. Qxd5 Nf6 9. Qc4 e6 10. Be2 d5 11. cxd6 Bxd6 12. Nc3 O-O 13. Bg5 Be7 14. Rd1 Bd7 15. Ne5 Nd5 16. Nxd7 {Coles,J-Raj,A ICCF 2019 1-0 (34)}) 5. Nc3 (5. e3 d6 6. Bxa6 bxa6 7. Nc3 {1-0 (7) Zavaleta Cobián,J-Perez Nuñez,K ICCF 2019}) 5... d6 (5... e6 6. dxe6 dxe6 7. Qxd8+ Kxd8 8. e4 Nc5 9. Ne5 Ke7 10. f3 a6 11. Bf4 Ne8 12. Nc4 b5 13. Na5 f6 14. e5 Kf7 15. O-O-O Nd7 16. Nc6 fxe5 17. Bxe5 {Cipolla,A (2017)-Bassanini,M (1923) ICCF 2016 1-0 (61)}) 6. e4 Bg4 (6... Nc5 7. e5 dxe5 8. Nxe5 a6 9. Qd4 Ncd7 10. Bf4 g6 11. Be2 Nxe5 12. Bxe5 Bg7 13. O-O-O {Lonnee,G (1940)-Wedel,F (1725) ICCF 2018 1-0 (38)}) 7. Bb5+ Nd7 8. Bg5 h6 9. Be3 Bxf3 10. Qxf3 g6 11. Bd4 Rg8 12. e5 e6 13. dxe6 fxe6 14. Qxb7 Kf7 {Stracey,N-Chugg,M (1397) ICCF 2015 1-0}) 3... Nd5 4. Bg3 e6 5. a3 d6 6. e4 Nf6 7. Be2 Nxe4 8. Nbd2 Nxg3 9. fxg3 e5 10. Ng1 Nxd4 11. Bd3 h5 12. Ne2 Bg4 13. Nf3 Nxf3+ 14. gxf3 {Hardwick,M (1498)-Whittle,P (1416) ICCF 2015 1/ 2-1/2}) (2... a5 3. e3 d5 4. c3 Bf5 5. Qb3 b6 6. Bb5 a4 7. Bxc6+ Bd7 8. Qxd5 Ra5 9. Bxd7+ Qxd7 10. Qxd7+ Kxd7 11. e4 f6 12. Be3 e5 13. dxe5 {1-0 (13) Bristol,M (2170)-Johal,A ICCF 2006}) (2... b5 3. e4 a6 4. Be2 d6 5. O-O h5 6. h4 Nf6 7. d5 Nb4 8. a3 Nxc2 9. Qxc2 e5 10. Bg5 Bd7 11. b4 Be7 12. Nbd2 Bg4 13. Bxf6 Bxf6 14. g3 {Secondi,A (1517)-Limoli,P (1688) ICCF 2015 1-0 (35)}) (2... b6 3. c4 (3. e4 Bb7 4. d5 Nb4 5. a3 e6 6. dxe6 fxe6 7. axb4 Bxb4+ 8. c3 Bc5 9. Bd3 Nf6 10. Nbd2 Ng4 11. O-O Bxf2+ 12. Rxf2 Nxf2 13. Kxf2 Qf6 14. Kg1 O-O-O { Moegito,A-Anderson,L (1021) ICCF 2017 1-0}) 3... Bb7 4. Nc3 g6 5. d5 Na5 6. Qd4 f6 7. b4 Nxc4 8. Qxc4 d6 9. Nd4 a6 10. Ne6 Qc8 11. e4 Rb8 12. Be2 c6 13. Qb3 b5 14. Bg4 {Gilbert,R (1789)-Armstrong,J (1545) ICCF 2017 1-0 (38)}) (2... e5 3. d5 (3. Nxe5 Nxe5 4. dxe5 Qe7 5. Qd4 c5 6. Qd5 f6 7. f4 d6 8. exd6 Qxd6 9. Qxd6 Bxd6 10. e4 Bd7 11. Nc3 Ne7 12. Be3 O-O-O 13. Rd1 Bc6 14. h4 h5 {Steinman, A-Holmes,R ICCF 2008 1-0 (69)}) 3... Nb4 4. a3 Nf6 5. axb4 Bxb4+ 6. c3 Bc5 7. Nxe5 O-O 8. Nd3 Bb6 9. Nd2 Ng4 10. Nc4 c6 11. Qb3 cxd5 12. Nxb6 axb6 13. Rxa8 b5 14. Qxd5 {Lafferty,B-Chavez,A (1369) ICCF 2019 1-0}) (2... f5 3. d5 Nb8 4. e4 fxe4 5. Ng5 g6 6. Nc3 Bg7 7. Ncxe4 Nf6 8. Bd3 O-O 9. Nxf6+ Rxf6 10. h4 c6 11. h5 cxd5 12. Nxh7 Re6+ 13. Kf1 Qb6 14. hxg6 {Beckmann,M-Spiliopoulos,V (1535) ICCF 2017 1-0 (28)}) 3. d5 (3. Bf4 Bg7 4. e3 Nf6 5. c3 d5 6. Bd3 O-O 7. h3 Re8 8. O-O Nd7 9. Nbd2 e6 10. Re1 e5 11. Nxe5 Ndxe5 12. dxe5 Bxe5 13. Qf3 Qd6 14. Bc2 a6 {Gérard,A (1741)-Passarelli,S ICCF 2020 1-0 (41)}) (3. e3 h5 4. Bc4 d6 5. Ng5 d5 6. Bb3 e5 7. Nf3 e4 8. Nfd2 Bg4 9. f3 exf3 10. gxf3 Qh4+ 11. Ke2 Be6 12. Qf1 Nb4 13. c3 Na6 14. Ba4+ c6 {Miedema,H (987)-Vaessen,J (1461) ICCF 2018 0-1 (26)}) 3... Nb4 (3... Nb8 4. e4 d6 5. c4 e6 6. Nc3 Nf6 7. Bg5 Bg7 8. Bd3 c6 9. O-O Qb6 10. Qd2 Nbd7 11. dxe6 fxe6 12. e5 dxe5 13. Bh6 Bxh6 14. Qxh6 Qxb2 15. Bxg6+ {Aarnos,M-Feldberg,J ICCF 2013 1-0}) 4. c3 (4. a3 Na6 5. e4 b6 6. Bc4 Nc5 7. Nc3 Bg7 8. e5 d6 9. Bf4 Bg4 10. h3 Bxf3 11. Qxf3 Nd7 12. exd6 cxd6 13. O-O Ngf6 14. Rfe1 {MacMillen,A (1739)-Armstrong,J (1599) ICCF 2015 1-0 (26)}) 4... Na6 5. e4 Bg7 6. Bxa6 Nf6 7. Bd3 O-O 8. O-O Nh5 9. Re1 Nf4 10. Bxf4 {1-0 (10) Sgarito,C (2210)-Lorusso,L ICCF 2019}) (2. e3 e5 (2... a6 3. Bd3 d5 4. f4 Nf6 5. Nd2 Bg4 6. Ngf3 e6 7. O-O Be7 8. Qe1 O-O 9. Qg3 Bxf3 10. Rxf3 Nb4 11. e4 dxe4 12. Nxe4 Nxe4 13. Bxe4 Bh4 14. Qh3 {Cangelosi,D (1845)-Lines,D ICCF 2012 0-1}) (2... d6 3. Bb5 e6 4. Bxc6+ bxc6 5. Nf3 Nf6 6. O-O Be7 7. b3 O-O 8. Bb2 Ba6 9. Re1 Ne4 10. c4 Bf6 11. Qc2 Ng5 12. Nbd2 d5 13. Ne5 Qd6 14. c5 {Beck,A-Chugg,M (1495) ICCF 2015 1-0 (27)}) (2... h5 3. g3 e6 4. Bg2 Bb4+ 5. c3 Nxd4 6. Qxd4 f6 7. Qxb4 d6 8. Bxb7 Bxb7 9. Qxb7 Rh6 10. e4 Rg6 11. Nf3 Rg4 12. h3 Rxe4+ 13. Be3 a5 14. Qxe4 {Oles,A-Dahlberg,S ICCF 2018 1-0 (40)}) 3. c3 (3. dxe5 Nxe5 4. e4 Nf6 5. Nc3 Bb4 6. f4 Ng6 7. Qd3 Bxc3+ 8. Qxc3 Nxe4 9. Qf3 Qe7 10. Bd3 Ng3+ 11. Ne2 Nxh1 12. g4 Qh4+ 13. Kd1 Nf2+ 14. Ke1 Nxd3+ {Miedema, H-Niewold,J (1903) ICCF 2015 0-1}) (3. d5 Nce7 4. c4 Ng6 5. Nc3 Bb4 6. Nge2 Nf6 7. a3 Be7 8. h4 h5 9. Ng3 d6 10. Be2 Kf8 11. Nxh5 Nxh5 12. Bxh5 Nxh4 13. g3 Nf5 14. Bf3 Rxh1+ {Zaas,J-Evans,S (1697) ICCF 2015 1-0 (39)}) (3. Nf3 d6 4. Bb5 Bd7 5. Bxc6 Bxc6 6. dxe5 dxe5 7. Qxd8+ Rxd8 8. Nbd2 e4 9. Nd4 Bc5 10. c3 Nf6 11. Nxc6 bxc6 12. b4 Bd6 13. O-O O-O 14. Nc4 Rfe8 {Parodi,P-Ferrari,D ICCF 2014 0-1 (45)}) 3... d5 4. Bb5 e4 5. b3 Nf6 6. Ba3 Bxa3 7. Nxa3 O-O 8. c4 Nb4 9. cxd5 Nfxd5 10. Nc2 Nc3 11. Qd2 Nxc2+ 12. Qxc2 Nxb5 13. Qxe4 Re8 {Devaux,V (1686)-Masset,J (1868) ICCF 2013 0-1}) (2. Bf4 d6 3. e3 e5 4. Bg3 h5 5. h3 h4 6. Bh2 exd4 7. exd4 g5 8. Ne2 Bg7 9. Nbc3 Bf5 10. a3 Qe7 11. Nd5 Qd7 12. Ne3 O-O-O 13. d5 Nce7 {Hugo,T (2313)-Iacomi,S (2332) ICCF 2020 1/2-1/2 (30)}) (2. c3 b6 3. e4 Bb7 4. d5 Ne5 5. f4 e6 6. fxe5 exd5 7. exd5 Bxd5 8. Qxd5 c6 9. Qe4 d5 10. Qe2 Qe7 11. Nf3 f6 12. Nd4 c5 13. exf6 Qxe2+ {Ratzel,W-Latta,D ICCF 2012 1-0 (25)}) (2. e4 e6 3. d5 Ne5 4. Nc3 (4. dxe6 dxe6 (4... fxe6 5. Nc3 (5. Nf3 Nxf3+ 6. Qxf3 Qf6 7. Nc3 Qxf3 8. gxf3 Bc5 9. Bf4 d6 10. Nb5 Bb6 11. Be3 Ke7 12. Bxb6 cxb6 13. O-O-O Nf6 14. Nxd6 Rd8 15. e5 Ne8 16. Nxe8 Rxe8 {Águila Batista,J-Gravelle,G ICCF 2016 1-0 (31)}) 5... Nc6 (5... a6 6. f4 Nf7 7. Nf3 b5 8. Bd3 Bb7 9. e5 Bc5 10. Be4 Bxe4 11. Nxe4 Bb6 12. Qd3 Ne7 13. Bd2 Nd5 14. O-O-O Qe7 15. Kb1 Nh6 16. h3 O-O 17. Neg5 {Akkalyoncu,S-Thew,B (2244) ICCF 2010 1-0}) (5... b6 6. Nf3 Nf7 7. Bd3 Bb7 8. O-O Bb4 9. Qd2 Ne7 10. a3 Bd6 11. Nb5 Ng6 12. Nxd6+ Nxd6 13. Qe3 Qe7 14. a4 O-O 15. b4 e5 16. Bb2 Qf6 17. Rfd1 { Daatselaar,J (2107)-Hall,T (1958) ICCF 2016 1-0 (51)}) (5... Bc5 6. Qh5+ Kf8 7. Qxe5 d6 8. Bg5 Nf6 9. O-O-O Qe7 10. Qg3 h6 11. Bxf6 gxf6 12. Nf3 a6 13. Nh4 Qh7 14. Ng6+ Kf7 15. Nxh8+ Qxh8 16. Be2 Bd7 17. f4 {Morera Morera,J (1738)-Asi,E ICCF 2019 1-0 (26)}) (5... h6 6. f4 Nf7 7. Nf3 Bd6 8. Qd4 Nf6 9. e5 O-O 10. exf6 gxf6 11. Be3 c5 12. Qd3 a6 13. Qg6+ Kh8 14. Ne4 f5 15. Nf6 Qa5+ 16. Nd2 b5 17. Qh7# {Svenungson,J-Whittle,P (1452) ICCF 2014 1-0}) 6. Nf3 Bb4 (6... Nf6 7. Bd3 d5 8. O-O Be7 9. Re1 O-O 10. exd5 exd5 11. h3 Nb4 12. Bf1 c5 13. a3 Nc6 14. Bg5 d4 15. Bc4+ Kh8 16. Bxf6 Bxf6 17. Ne4 b6 18. Rb1 {Krygier,I (2314)-Bortkun, E (2180) ICCF 2008 1-0 (44)}) 7. Bd2 (7. Bg5 Nge7 8. Qd2 O-O 9. O-O-O Qe8 10. Nb5 Bxd2+ {0-1 (10) Vieito Soria,L (1796)-Höchli,M ICCF 2005}) (7. Bd3 Bxc3+ 8. bxc3 e5 9. O-O Nf6 10. h3 d6 11. a4 O-O 12. a5 a6 13. Be3 Kh8 14. c4 Qe7 15. Nd2 Be6 16. Qe2 Rad8 17. Nf3 Bc8 {1/2-1/2 (17) Hauff,A (2361)-Sedlácek,T (2218) ICCF 2014}) 7... d6 8. a3 (8. Bd3 Bxc3 9. Bxc3 e5 10. O-O Nf6 11. h3 O-O 12. Bd2 Qe8 13. c3 Kh8 14. Nh4 Nh5 15. Nf5 Nf4 16. Bc2 Qg6 17. Qg4 Qf6 18. Qh4 Be6 19. Qxf6 Rxf6 {Galjé,H (2196)-Sedlácek,T (2218) ICCF 2014 1/2-1/2}) 8... Bxc3 9. Bxc3 e5 10. Bb5 Nf6 11. Qd3 Qe7 12. O-O O-O 13. Bc4+ Kh8 14. Bd2 Nd8 15. Rfe1 Be6 16. Rad1 {Skula,J (2032)-Sedlácek,T (2216) ICCF 2013 1/2-1/2 (45)}) 5. Qxd8+ Kxd8 6. f4 (6. Nf3 Nxf3+ (6... f6 7. Nxe5 fxe5 8. Be3 Bb4+ 9. c3 Be7 10. Be2 Nf6 11. Nd2 Bd7 12. f3 h6 13. a4 a5 14. Bb5 c6 15. Bb6+ Kc8 16. Be2 Ra6 17. Bxa6 bxa6 18. Nc4 {Gitananda,R-Whittle,P (1416) ICCF 2015 1-0 (26)}) 7. gxf3 Bd7 (7... g6 8. Bd2 Bg7 9. Nc3 Bd7 10. O-O-O a6 11. Ne2 Ne7 12. h4 h5 13. Nf4 Kc8 14. Nh3 b6 15. f4 Rd8 16. Ng5 Be8 17. Bg2 Ra7 18. a4 a5 19. b3 {Balutescu, M (2329)-Canibal,J (2380) ICCF 2013 1/2-1/2 (66)}) (7... Ne7 8. Nc3 Ng6 9. Be3 Bd6 10. O-O-O Bd7 11. Bb5 a6 12. Bxd7 Kxd7 13. f4 f6 14. h4 Ke7 15. h5 Nxf4 16. Rxd6 cxd6 17. Bxf4 g5 18. Be3 b5 19. a3 {Straka,J (2023)-Rouse Pasara,C (2105) ICCF 2010 1-0 (36)}) (7... Nf6 8. Be3 e5 9. Nd2 Nh5 10. O-O-O Ke8 11. a3 a6 { 0-1 (11) Ling,A (1838)-Deneuville,C (2203) ICCF 2010}) 8. Be3 Ne7 9. Nc3 Ng6 10. f4 Bd6 11. e5 Bc6 12. Rg1 Bb4 13. O-O-O+ Ke7 14. Ne2 Rhd8 15. Rxd8 Kxd8 16. Nd4 Bd7 17. Nf3 Bc6 {Moreno,A (2259)-Alzola Tovar,P (2255) ICCF 2007 1-0 (68)}) (6. Nc3 Bd7 (6... c6 7. Be3 Kc7 8. O-O-O Nf6 9. Bf4 Bd6 10. Rxd6 Kxd6 11. Bxe5+ Kxe5 12. Nf3+ Kf4 13. Bd3 Kg4 14. Ne5+ Kh5 15. Be2+ Kh6 16. Nxf7+ Kg6 17. Nxh8+ Kh6 18. Nf7+ {Lagergren,H (1899)-Asi,E (1759) ICCF 2020 1-0}) (6... Nf6 7. f4 Ned7 8. e5 Nd5 9. Bd2 Nxc3 10. Bxc3 Nb6 11. O-O-O+ Bd7 12. Nf3 Nd5 13. Bd2 Bc5 14. Bd3 b5 15. Be4 Kc8 16. f5 c6 17. fxe6 Bxe6 18. Ng5 {Keijzer,R (2207) -Latypov,M (2184) ICCF 2018 1/2-1/2 (43)}) 7. Bf4 (7. f4 Ng6 8. Be3 Nf6 9. Nge2 c5 10. Ng3 h5 11. Be2 h4 12. Nf1 Bc6 13. O-O-O+ Kc7 14. f5 exf5 15. exf5 h3 16. fxg6 hxg2 17. Bf4+ Kb6 18. Rg1 gxf1=Q {Michael,D (2011)-Karásek,L (2106) ICCF 2007 1/2-1/2 (33)}) 7... Ng6 8. Bg3 Bd6 9. Bxd6 cxd6 10. Be2 a6 11. Nf3 Kc7 12. a4 h6 13. b4 Rc8 14. O-O N8e7 15. Rfd1 Rhd8 16. b5 a5 17. Rab1 b6 {Secondi,A (1375)-Asi,E (1759) ICCF 2020 1/2-1/2 (66)}) (6. Bf4 Ng6 7. Be3 Nf6 8. Nc3 Ng4 9. O-O-O+ Bd7 10. Nf3 Nxe3 11. fxe3 Bc5 12. Nd4 Ke7 13. g3 Rhd8 14. Bb5 Bxb5 15. Ncxb5 Rd7 16. a3 Ne5 17. b4 Bb6 {Secondi,A (1648)-Arnold,E ICCF 2013 0-1}) 6... Nc6 (6... Nd7 7. Nc3 (7. Be3 Ngf6 8. Nc3 Bb4 9. Bd2 Bxc3 10. Bxc3 Nxe4 11. Bxg7 Rg8 12. Bd4 c5 13. Be3 b6 14. g3 Bb7 15. Bg2 Ndf6 16. Bf3 Kc7 17. Ne2 Rad8 18. Nc3 Nxc3 {Nicolás Andreu,R (2050)-Latypov,M (2145) ICCF 2017 0-1 (45)}) 7... a6 8. Be2 b5 9. Nf3 Bb7 10. a3 Bc5 11. Bd3 Bb6 12. Ke2 Ngf6 13. Be3 Ke7 14. Rhd1 c5 15. e5 Nd5 16. Nxd5+ Bxd5 17. c3 c4 18. Bc2 {Schäfer,U (2293) -Fischer,D (2331) ICCF 2012 1-0 (30)}) (6... Ng6 7. Nf3 Bc5 8. Nc3 Bd7 9. Bd3 ( 9. Bd2 Nf6 10. O-O-O Ng4 11. f5 Nf8 12. Re1 Nf2 13. Ne5 Be8 14. Nd3 Nxd3+ 15. Bxd3 a5 16. Bc4 e5 17. Rd1 Kc8 18. h4 {1-0 (18) Wenardi,W (2216)-Syafrial,N (2105) ICCF 2020}) 9... Nf6 10. Rf1 Kc8 11. Bd2 a5 12. O-O-O Bc6 13. Ng5 Be8 14. e5 Ng4 15. Rde1 Nxh2 16. Rh1 Ng4 17. Bxg6 fxg6 18. Nxe6 {Hendricks, R-Przybyl,M ICCF 2017 1-0 (27)}) 7. Nf3 Nf6 8. Nc3 (8. e5 Nb4 9. Na3 Ne4 10. c3 Nd5 11. Bd3 Nc5 12. Bc2 Bd7 13. Ng5 Ke8 14. Nxh7 Be7 15. Ng5 Rd8 16. Nf3 Na4 17. Nc4 Bb5 18. Na5 Nc5 19. g3 b6 {Glushenkov,S (2168)-Belov,P ICCF 2010 1/2-1/ 2 (57)}) 8... Bc5 9. Bd2 (9. Bd3 Nb4 10. Ke2 b6 11. a3 Nxd3 12. cxd3 Bb7 13. b4 Be7 14. Be3 Nd7 15. Rhc1 h6 16. Nb5 c6 17. Nbd4 Rc8 18. Ra2 c5 19. bxc5 bxc5 20. Nb3 c4 {Hoekstra,I (1985)-Shyam,C ICCF 2016 1/2-1/2 (47)}) 9... Ke7 10. Bd3 Rd8 11. Ke2 Kf8 12. a3 Bd7 13. e5 Ng4 14. Ne4 Nd4+ 15. Nxd4 Bxd4 {Sánchez Ródenas,A (2325)-Kokorin,V (2177) ICCF 2013 1/2-1/2 (32)}) (4. Qd4 Ng6 (4... d6 5. f4 Nd7 6. dxe6 fxe6 7. Nf3 Ngf6 8. e5 dxe5 9. fxe5 Bc5 10. Qh4 Nd5 11. Bg5 Be7 12. Bd3 Nf8 13. Nc3 Bxg5 14. Nxg5 Ne3 15. Qg3 Qd4 16. Nb5 {Krawczyk, W-Reimer,R ICCF 2016 1-0 (37)}) 5. dxe6 (5. Nf3 exd5 6. exd5 Nf6 7. Bd3 Be7 8. Bxg6 hxg6 9. O-O d6 10. Re1 c5 11. dxc6 bxc6 12. c4 c5 13. Qd3 d5 14. cxd5 Qxd5 15. Qe2 Qb7 16. Bg5 a5 {Lagergren,H (2073)-Dreisch,J (2093) ICCF 2016 1-0 (56)} ) 5... dxe6 6. Qxd8+ Kxd8 7. a3 Nf6 8. Bg5 h6 9. Bxf6+ gxf6 10. Nf3 Bc5 11. h4 b6 12. Nbd2 Bb7 13. h5 Ne5 14. Nxe5 fxe5 15. f3 a5 {Krett,V (1798)-Nielsen,J (1998) ICCF 2014 1/2-1/2 (52)}) (4. Qe2 Nf6 5. f4 Ng6 6. dxe6 dxe6 7. g3 e5 8. f5 Ne7 9. Nf3 Nc6 10. Nc3 Bb4 11. Bd2 O-O 12. O-O-O Nd4 13. Qg2 Bxc3 14. Bxc3 Nxe4 15. g4 Qf6 {Budding,A (2163)-Gravelle,G (1814) ICCF 2019 1/2-1/2 (45)}) 4... Nf6 (4... Bc5 5. dxe6 (5. Nf3 Ng4 6. Bg5 Bxf2+ 7. Kd2 f6 8. Bf4 Bc5 9. Qe2 N4h6 10. a3 e5 11. Bg3 Nf7 12. Ne1 a6 13. Nd3 Ba7 14. Rd1 d6 15. Kc1 h5 16. h3 f5 {Smith,A (1662)-Toye,D (1655) ICCF 2017 1/2-1/2 (28)}) 5... dxe6 6. Qxd8+ Kxd8 7. Bf4 (7. Be2 Nf6 8. Nf3 Ng6 9. e5 Nd7 10. Ng5 Ke7 11. f4 Nh4 12. g3 Nf5 13. Bd3 h6 14. Nf3 Nd4 15. Be4 Rd8 16. Na4 Rb8 17. b3 Ke8 18. Rf1 Bb4+ { De Smet,K (2150)-Latypov,M (2184) ICCF 2018 1/2-1/2 (38)}) 7... Ng6 8. Bg3 (8. Rd1+ Bd7 9. Bg3 Nf6 10. h4 (10. f3 h5 11. Nb5 e5 12. h4 b6 13. Nc3 Kc8 14. Nh3 Kb7 15. Bc4 Rhf8 16. Ng5 Be8 17. Bf2 Be7 18. Ne2 Nd7 19. a3 c6 20. Ng3 Bxg5 21. hxg5 Nf4 {Jean,P-Dessert,C ICCF 2014 1-0}) 10... Nh5 11. Bh2 e5 12. Nf3 Bd6 13. Bb5 f6 14. Bxd7 Kxd7 15. g4 Nhf4 16. h5 Ne7 17. g5 fxg5 18. h6 gxh6 19. Nxe5+ Ke6 {Romanov,L (1923)-Masset,J (1898) ICCF 2012 1-0 (45)}) 8... Bd7 (8... Nf6 9. h4 Bd6 10. h5 Bxg3 11. hxg6 Be5 12. gxf7 Ke7 13. Nf3 Bxc3+ 14. bxc3 Bd7 15. Rh4 Raf8 16. e5 Nd5 17. c4 Nb6 18. Rb1 c5 19. Bd3 Bc6 20. Rg4 {Klaus,E (2230) -Hoekstra,I (2181) ICCF 2018 1/2-1/2 (55)}) (8... h5 9. h4 Bd6 10. Bxd6 cxd6 11. O-O-O Ke7 12. Nb5 Nf6 13. Nxd6 Rd8 14. Nxc8+ Raxc8 15. Rxd8 Rxd8 16. f3 Ne8 17. g3 Nd6 18. Be2 f5 19. Nh3 fxe4 20. Ng5 {Littke,H (2233)-Kokorin,V (2179) ICCF 2014 1/2-1/2 (52)}) 9. h4 h5 10. O-O-O Kc8 11. Nf3 Nf6 12. Rd2 Rd8 13. Bd3 Ng4 14. Rhd1 Be8 15. e5 Nf8 {Lelgemann,L (2180)-Bender,K (2321) ICCF 2017 1/ 2-1/2 (48)}) (4... exd5 5. Qxd5 d6 6. Be3 Nf6 7. Qd2 Nfg4 (7... Be7 8. f4 Neg4 9. O-O-O Nxe3 10. Qxe3 O-O 11. e5 Ne8 12. Nf3 c6 13. Bd3 Qb6 14. Qe2 d5 15. h4 Qb4 16. g3 Bg4 17. Bxh7+ Kh8 18. Bd3 Nc7 19. Qg2 {Caliguire,J (2157)-Gravelle, G (1881) ICCF 2020 1-0 (40)}) 8. Bf4 Ng6 9. Bg3 h5 10. h4 Be7 11. O-O-O c6 12. f3 N4e5 13. f4 Ng4 14. Nf3 Qc7 15. Be2 b5 16. Kb1 {Struzka,V (2075)-Sedlácek,T (2216) ICCF 2013 1/2-1/2 (51)}) 5. Qd4 (5. f4 Ng6 6. dxe6 dxe6 7. Qxd8+ Kxd8 8. a3 Bc5 9. Nf3 Bd7 10. g3 h5 11. h3 Bc6 12. Bd3 a5 13. Ke2 Nd7 14. Rb1 a4 15. b4 axb3 16. cxb3 {Abdulmanov,E (2165)-Latypov,M (2184) ICCF 2018 1/2-1/2 (70)}) 5... d6 6. f4 Ned7 7. Nf3 exd5 8. exd5 c5 9. dxc6 bxc6 10. Qe3+ Be7 11. Nd4 Nb8 12. Bd3 d5 13. O-O O-O {Garus,J (2049)-Bortkun,E (2180) ICCF 2008 0-1 (46)}) 2... Ne5 (2... Nb4 3. a3 (3. e4 c6 (3... e5 4. Nf3 Bd6 5. a3 Na6 6. Bxa6 bxa6 7. Qd3 Nf6 8. Nbd2 c6 9. Nc4 Qe7 10. Bg5 h6 11. Bh4 g5 12. Bg3 cxd5 13. Nxd6+ Qxd6 14. Bxe5 Qb6 15. Qd4 {Krett,V (1671)-Navara,E (1442) ICCF 2014 1-0}) (3... Nf6 4. a3 Na6 5. e5 Ne4 6. Bxa6 bxa6 7. Qf3 Nc5 8. Nh3 Bb7 9. Nc3 e6 10. b4 Bxd5 11. Nxd5 exd5 12. bxc5 Bxc5 13. Qxd5 O-O 14. Qxc5 Re8 15. O-O {Ohera,D (1938)-Navara,E (1442) ICCF 2014 1-0 (26)}) 4. c3 cxd5 5. cxb4 f5 6. exf5 g6 7. fxg6 hxg6 8. Bd3 b6 9. Bxg6# {1-0 (9) Gezer,E-Jimenez,V ICCF 2021}) (3. c4 d6 4. Qa4+ Bd7 5. Qxb4 c5 6. Qxb7 Nf6 7. Nf3 Rb8 8. Qa6 Rb6 9. Qxa7 Rb4 10. b3 Ne4 11. Nbd2 Nc3 12. Qa3 Bg4 13. Bb2 g6 14. Bxc3 Bg7 {Lambert,D (1583)-Gott,D ICCF 2021 1-0}) 3... Na6 (3... Nxd5 4. Qxd5 Nf6 5. Qd3 e5 6. e4 d5 7. exd5 Nxd5 8. c4 Nf4 9. Qxd8+ Kxd8 10. Nc3 Bc5 11. Nf3 Bf5 12. Nxe5 Re8 13. Bxf4 f6 14. O-O-O+ Bd6 15. Nf7+ {Cumming,D (2319)-Navara,E (1490) ICCF 2012 1-0 (29)}) 4. Nc3 e5 5. e4 d6 6. Bb5+ c6 7. dxc6 Nc7 8. cxb7+ Nxb5 9. bxa8=Q f5 10. Nxb5 Qa5+ 11. c3 Ne7 12. Nxd6+ Kd8 13. Nxc8+ Ke8 14. Nd6+ {Cleto,F (2512)-Pajuelo,J ICCF 2011 1-0}) (2... Na5 3. e4 c6 4. b4 cxd5 5. exd5 Nc6 6. dxc6 bxc6 7. Bb2 Nf6 8. Nd2 a5 9. bxa5 Rxa5 10. Bd3 e6 11. Ngf3 Bd6 12. Nc4 Rb5 13. Nxd6+ Ke7 14. Nxb5 {Moore,A-Rallmann,R ICCF 2014 1-0 (27)}) (2... Nb8 3. Nf3 Nf6 4. g3 (4. Nc3 d6 5. e4 e5 (5... g6 6. Bc4 Bg4 7. O-O Bg7 8. h3 Bxf3 9. Qxf3 Nbd7 10. Qe2 c6 11. Rb1 Rc8 12. dxc6 bxc6 13. Rd1 O-O 14. Bd2 Rb8 15. Qe1 Qc7 16. b3 Rbd8 17. Bf1 { Yáñez García,J (2319)-Jensen,J (2338) ICCF 2019 1/2-1/2 (59)}) 6. dxe6 Bxe6 7. Ng5 Nc6 8. Nxe6 fxe6 9. g3 Qe7 10. Be3 a6 11. Bg2 O-O-O 12. Qe2 g6 13. f4 Bg7 14. O-O-O e5 15. Kb1 {Zimmerman,I (2216)-Fonseca,P (2220) ICCF 2016 1-0 (40)}) 4... d6 5. Bg2 b6 6. Nc3 e6 7. dxe6 Bxe6 8. Bg5 Be7 9. O-O O-O 10. Nd4 Bg4 11. Bxa8 Na6 12. Bf3 Bh3 13. Re1 Qd7 14. Nc6 {Król,P (1825)-Blanchard,A (1334) ICCF 2014 1-0 (33)}) 3. f4 (3. Nc3 d6 (3... e6 4. dxe6 (4. Qd4 d6 5. f4 Nd7 6. dxe6 fxe6 7. Nf3 Ngf6 8. e4 e5 9. Qd1 c6 10. Ng5 exf4 11. Bxf4 Nb6 12. a4 a5 13. Qd4 Be7 14. Be3 h6 15. Nf3 c5 {Gerasimov,V (2479)-Belov,P (2142) ICCF 2012 1-0 (55)}) 4... dxe6 (4... fxe6 5. e4 Nc6 6. Bd3 Nf6 7. f4 d6 8. Be3 e5 9. f5 g6 10. Bg5 Be7 11. Nf3 h6 12. Bxf6 Bxf6 13. Nd5 g5 14. h3 Nb8 15. Nh2 h5 16. Be2 {Dedina,M (2265)-Sedlácek,T (2216) ICCF 2013 1-0}) 5. Qxd8+ Kxd8 6. Nf3 Nxf3+ 7. gxf3 Nf6 8. e4 Bd7 9. Rg1 g6 10. Bg5 Be7 11. O-O-O Nh5 12. Be3 Bd6 13. Kb1 Bxh2 14. Rg2 Bf4 15. Bd4 {Verslype,S (1677)-Latypov,M ICCF 2015 0-1 (36)}) (3... c5 4. f4 Ng4 5. e4 d6 6. Bb5+ Bd7 7. Qxg4 Nf6 8. Bxd7+ Nxd7 9. e5 dxe5 10. fxe5 Nxe5 11. Qe2 Qc7 12. Bf4 f6 13. Qb5+ Kd8 14. O-O-O g5 15. Bxe5 { Horváth,J (1880)-Haws,A (1264) ICCF 2020 1-0 (25)}) (3... f5 4. Nf3 Nxf3+ 5. exf3 c6 6. Bc4 cxd5 7. Qxd5 e6 8. Qe5 d6 9. Qb5+ Qd7 10. Bf4 Nf6 11. Qb3 Kd8 12. O-O-O Ne8 13. Rhe1 Nc7 14. Nb5 Nxb5 15. Bxb5 {Palladino,M (2099)-Romito,D (1706) ICCF 2011 1-0}) (3... Nf6 4. f4 Ng6 5. f5 Ne5 6. e4 e6 7. Bf4 Bd6 8. Nf3 Nd3+ 9. Qxd3 Bxf4 10. dxe6 dxe6 11. Qc4 Be3 12. Rd1 Qe7 13. e5 Nd7 14. Nb5 O-O 15. Nxc7 {Grochowski,M (2304)-Bortkun,E (2180) ICCF 2008 1-0 (66)}) 4. e4 c6 ( 4... e6 5. f4 Ng6 6. dxe6 fxe6 7. Nf3 d5 8. exd5 Bb4 9. Bb5+ Bd7 10. Qe2 Nf6 11. dxe6 Nxf4 12. exd7+ Kf8 13. Bxf4 c6 14. O-O-O cxb5 15. Qxb5 Nxd7 {Mol, G-Anderson,L (1309) ICCF 2014 1-0}) 5. f4 Nd7 (5... Ng6 6. Nf3 Qc7 7. f5 Ne5 8. Nxe5 dxe5 9. Bg5 Nf6 10. Qf3 h6 11. Be3 Bd7 12. dxc6 Bxc6 13. O-O-O a6 14. Bc4 Rc8 15. Bb3 b5 16. a3 a5 17. Qe2 {Karelin,E (1981)-Doorn,J (2223) ICCF 2007 1-0 (35)}) 6. Nf3 (6. Be3 Ngf6 7. Qf3 cxd5 8. exd5 g6 9. Bd4 Bg7 10. O-O-O Nc5 11. h3 Bd7 12. Kb1 Rb8 13. g4 b5 14. Nce2 a5 15. Ng3 {Lalics,A (2069)-Nielsen, J (1998) ICCF 2014 1-0 (28)}) 6... cxd5 (6... Ngf6 7. dxc6 bxc6 8. e5 dxe5 9. fxe5 Ng4 10. e6 fxe6 11. Ng5 h5 12. Qd3 Rh6 13. Nge4 Qb6 14. Bxh6 Nxh6 15. Be2 Ne5 16. Qg3 Neg4 {Dessaules,P (2156)-Gavrijski,D (1993) ICCF 2010 1-0 (56)}) 7. Qxd5 e6 8. Qd4 a6 9. Bd3 (9. Bc4 b5 10. Be2 Rb8 11. Be3 b4 12. Nd1 Ngf6 13. Bc4 Bb7 14. Bd3 d5 15. Be2 dxe4 16. Ne5 Nxe5 17. fxe5 Nd5 18. O-O {Brião,P (1803) -Lockwood,K ICCF 2020 0-1 (25)}) 9... Qc7 10. O-O Qc5 11. a4 Ne7 12. Qe3 Nc6 13. Nd1 Qxe3+ 14. Nxe3 Nc5 {Neale,M (2200)-Brotherton,T (2200) ICCF 2020 1/2-1/ 2 (25)}) (3. Bd2 Nf6 4. Nc3 e6 5. e4 Bc5 6. h3 exd5 7. exd5 O-O 8. Bg5 Re8 9. Be2 h6 10. Bxf6 Qxf6 11. Nf3 Nxf3+ 12. gxf3 Qxf3 13. Rf1 Bb4 14. Qd3 Bxc3+ { Flury,R-Welti,M (1884) ICCF 2008 0-1}) (3. Bf4 Ng6 4. Bg3 Nf6 5. c4 e5 6. Nf3 Bb4+ 7. Nbd2 Bxd2+ 8. Nxd2 d6 9. e4 O-O 10. f3 Nh5 11. Bf2 b6 12. Be2 Nhf4 13. g3 Nxe2 14. Qxe2 f5 {Kumar,K-Asi,E ICCF 2019 0-1 (49)}) 3... Ng6 (3... Nc4 4. e4 Ne3 5. Bxe3 Nf6 6. e5 Nh5 (6... Ne4 7. Bd3 Nc5 8. Bxc5 b6 9. Be3 d6 10. Be4 g6 11. Bd4 Bh6 12. e6 Rf8 13. f5 Ba6 14. Nd2 fxe6 15. dxe6 d5 16. Bd3 b5 17. fxg6 {Elwood,D (1668)-Sutcliffe,P (1553) ICCF 2018 1-0}) 7. Qxh5 g6 8. Qf3 b6 9. f5 gxf5 10. Nc3 Bg7 11. Qxf5 Bb7 12. e6 dxe6 13. dxe6 fxe6 14. Bb5+ c6 15. Qh5+ {Overlan,M-Spiliopoulos,V ICCF 2016 1-0}) 4. e4 (4. Nf3 e6 5. dxe6 dxe6 6. Qxd8+ Kxd8 7. Be3 Nf6 8. g3 b6 9. Nc3 Bb4 10. O-O-O+ Ke7 11. Nb5 c6 12. a3 cxb5 13. axb4 Bb7 14. Bh3 Rhc8 15. Rhf1 Nf8 {Goudriaan,E-Jensen,E (2495) ICCF 2014 1/2-1/2 (56)}) (4. Nc3 e6 5. dxe6 (5. e4 Bb4 6. Nge2 Qh4+ 7. g3 Qe7 8. a3 Ba5 9. Bg2 Nf6 10. dxe6 dxe6 11. e5 Ng4 12. Nd4 Qd8 13. Bf3 Nh6 14. Qd3 Ne7 15. Be3 Nd5 16. Bd2 O-O {Zowain,L (2086)-Belz,B ICCF 2015 1-0 (58)}) 5... fxe6 6. Nf3 d5 7. e3 Bd7 8. Bd3 Bc5 9. Bxg6+ hxg6 10. Qd3 Qf6 11. a3 O-O-O 12. b4 Bd6 13. Bb2 Kb8 14. Nd1 Qe7 15. Qxg6 Nf6 {Bultman,M (2281)-Sedlácek,T (2211) ICCF 2012 1/2-1/2 (34)}) 4... e5 5. dxe6 fxe6 (5... dxe6 6. Qxd8+ Kxd8 7. Nf3 (7. Nc3 Bc5 8. Nf3 Nf6 9. Bd3 a6 (9... Ng4 10. Na4 Bf2+ 11. Ke2 Bd7 12. h3 Bxa4 13. Ng5 Ke7 14. hxg4 Bg3 15. Kf3 Bh4 16. b3 Bc6 17. Bb2 Rag8 18. Nh3 h6 19. Ke3 Bg3 20. a4 Nh4 21. Ng1 {Cuccumini,V (2165)-Hoogkamer,M (1963) ICCF 2020 1-0 (46)}) 10. a3 Ng4 11. b4 Ba7 12. Rf1 Ne3 13. Bxe3 Bxe3 14. g3 Ke7 15. Nd1 Ba7 16. Kd2 Rd8 17. c4 Kf8 18. Nc3 Bd7 {Pawlowski,W (2155)-Latypov,M (2184) ICCF 2018 1/2-1/2 (35)} ) (7. g3 Bc5 8. Nf3 Nf6 9. Bd3 Ke7 10. f5 Nf8 11. Nc3 exf5 12. exf5 N8d7 13. Bf4 c6 14. O-O-O Re8 15. Na4 Bb6 16. Nxb6 axb6 17. Rhe1+ Kf8 18. g4 Rxe1 { Sukmaji,U (2187)-Syafrial,N (2095) ICCF 2020 1-0}) 7... Nf6 (7... Bb4+ 8. c3 Bc5 9. Nbd2 (9. Bd3 a5 10. g3 f6 11. Nbd2 e5 12. f5 Nf8 13. Nb3 Be7 14. a4 b6 15. g4 Bb7 16. Ke2 Nd7 17. Rg1 Bf8 18. Be3 Ne7 19. Nbd2 Nc8 20. g5 Nc5 { Romm,M (2457)-Glukhovtsev,S (2400) ICCF 2016 1-0 (68)}) 9... Nf6 10. e5 Nd5 11. Ne4 Bb6 12. c4 Nb4 13. Rb1 a5 14. a3 Nc2+ 15. Ke2 Nd4+ 16. Nxd4 Bxd4 17. h4 h5 18. Be3 Bxe3 19. Kxe3 {Majuwana Kankanamge,A-Latypov,M ICCF 2015 1/2-1/2 (48)}) 8. e5 (8. Bd3 Bb4+ 9. Ke2 Bd7 10. a3 Bc5 11. b4 Bb6 12. c4 a5 13. c5 Ba7 14. Nc3 Re8 15. e5 Nd5 16. Nxd5 exd5 17. Kf2 {Pontoppidan,E (1893)-Hoogkamer,M ICCF 2014 0-1 (34)}) 8... Nxe5 9. Nxe5 Ke8 10. Be2 Nd5 11. Bd2 f6 12. Nd3 b6 13. Nc3 Bb7 14. O-O Rd8 15. Nxd5 Bxd5 16. Bf3 Kf7 17. Bxd5 {Sánchez Arévalo, L-Hoggan,J ICCF 2020 1-0 (32)}) 6. Nf3 (6. h4 d5 7. h5 N6e7 8. Nf3 Nc6 (8... Nf6 9. e5 Ne4 10. Bd3 Bd7 11. Rh3 Nc5 12. Be2 Nf5 13. g4 Nh6 14. Nd4 Ne4 15. g5 Nf7 16. Nd2 Nxd2 17. Bxd2 c5 18. Nf3 Qc7 19. c4 O-O-O 20. Qc2 {Beltins,G (2144) -Arnold,E (2125) ICCF 2019 1-0 (42)}) 9. Nc3 Bb4 10. Bd2 Nf6 11. h6 dxe4 (11... g6 12. Bd3 O-O (12... Qe7 13. e5 Nd7 14. a3 Bxc3 15. Bxc3 O-O 16. Bd2 Nc5 17. b4 Nxd3+ 18. cxd3 a5 19. b5 Nd8 20. Rc1 b6 21. Qc2 Ra7 22. a4 Bd7 23. Nd4 Rb7 24. Qc3 {Torgersen,T (2260)-Gravelle,G (1881) ICCF 2020 1-0 (33)}) 13. e5 Ng4 14. Qe2 Bc5 15. Nd1 Be7 16. g3 d4 17. Be4 Nb4 18. Bxb4 Bxb4+ 19. c3 dxc3 20. bxc3 Be7 21. Nh4 Nxh6 22. Nxg6 hxg6 23. Rxh6 {Campani,P (2126)-Breuer,S (2153) ICCF 2020 1-0 (26)}) 12. hxg7 Rg8 13. Ne5 Rxg7 14. Nxc6 bxc6 15. Qe2 Qd6 16. O-O-O Rb8 17. b3 Rd7 {Vodicka,M (2061)-Gravelle,G (1814) ICCF 2019 1-0 (27)}) ( 6. g3 b6 7. Nf3 Bb7 8. Bd3 Bc5 9. Nc3 Nf6 10. Qe2 Qe7 11. a3 a5 12. Rf1 d5 13. e5 Nd7 14. Nb5 O-O 15. Nxc7 Rac8 16. Nb5 Qe8 17. Bd2 a4 {Denisov,T (2238) -Knöppel,B (2030) ICCF 2016 1-0 (44)}) (6. Qe2 Nf6 7. g3 Bc5 8. Nc3 O-O 9. Bd2 d5 (9... d6 10. O-O-O Qe8 11. h4 Ne7 12. Nh3 Bd7 13. e5 dxe5 14. fxe5 Nfd5 15. Ne4 Bd4 16. c4 Nb6 17. Bf4 c5 18. Nd6 Qd8 19. Ng5 h6 20. Bh3 hxg5 21. hxg5 { Steel,A (2158)-Sciupokas,A (2125) ICCF 2020 1-0 (41)}) 10. e5 Nd7 11. Nf3 Nb6 12. O-O-O Nc4 13. Kb1 Qe8 14. Bc1 b6 15. h4 Ne7 16. g4 Qc6 17. h5 a5 { Kotyurgin,I (2198)-Sciupokas,A (2130) ICCF 2018 1-0 (52)}) (6. Nc3 Bb4 7. h4 Nf6 8. h5 Ne7 9. h6 g6 10. Bd2 d5 11. a3 Ba5 12. Bd3 O-O 13. e5 Bxc3 14. Bxc3 Nd7 15. Nf3 Nc5 16. O-O Nxd3 17. Qxd3 c5 {Matsukevich,V (2269)-Sciupokas,A (2127) ICCF 2021}) (6. Bd3 Bc5 7. Nc3 d6 8. Nf3 Bd7 9. Qe2 N6e7 10. e5 d5 11. Ng5 g6 12. Bd2 a5 13. Qf3 h6 14. Qh3 Qc8 15. O-O-O Kf8 16. Nf3 a4 17. Nh4 Kg7 { Abdala,M (2205)-Pizzo,R ICCF 2006 0-1 (30)}) 6... d5 (6... Bb4+ 7. c3 (7. Nc3 Nf6 8. Bd3 O-O 9. O-O d5 10. e5 Bc5+ 11. Kh1 Ng4 12. g3 Nh6 13. Ne2 Bd7 14. c3 Be7 15. b4 a5 16. b5 c5 17. h4 Qe8 18. a4 Rd8 {Campbell,E (2110)-Jones,B (2108) ICCF 2014 1-0 (42)}) (7. Bd2 Bxd2+ 8. Qxd2 Qf6 9. Nc3 Qxf4 10. Qxf4 Nxf4 11. g3 Ng6 12. Nb5 Kd8 13. Ng5 Ne5 14. O-O-O d6 15. Bh3 Nf6 16. Nxe6+ Bxe6 17. Bxe6 Re8 18. Bh3 Nxe4 {Gavrijski,D (2046)-Jones,B (2108) ICCF 2014 1/2-1/2}) 7... Bc5 8. Qe2 (8. Nbd2 d5 9. g3 Nh6 (9... Nf6 10. Qe2 O-O 11. e5 Ng4 12. Nd4 Nh6 13. N2f3 Ne7 14. Ng5 Bxd4 15. cxd4 Nhf5 16. Qf2 Nc6 17. Bd3 h6 18. Nf3 b6 19. g4 Nfe7 20. Bd2 a5 21. O-O Nb4 22. Bxb4 axb4 23. Nh4 Rf7 24. f5 Ba6 25. Bxa6 Rxa6 26. f6 Nc6 27. Rac1 Qe8 28. Qd2 b3 29. g5 hxg5 30. Qxg5 Nxd4 31. Qh5 c5 32. Ng6 {1-0 (32) Rawlings,A (2393)-Tyutyunnik,R (2291) ICCF 2013 Unusual replies to-1 d4}) 10. b4 (10. Nb3 Bb6 11. e5 Ne7 12. Nbd4 Nef5 13. Bb5+ c6 14. Bd3 g6 15. Bd2 Bd7 16. Qe2 Qe7 17. Nc2 c5 18. O-O-O O-O-O 19. Be1 Ng7 20. b3 Kb8 21. Rf1 {Liedl,W (2352)-Zelovic,V (2357) ICCF 2013 1-0 (61)}) 10... Bb6 11. c4 a5 12. c5 Ba7 13. Bb2 O-O 14. a3 b6 15. c6 b5 16. Qb3 Ng4 17. Bxb5 Rb8 18. Be2 Bf2+ 19. Kf1 Bb6 {Timko,V (2434)-Dailido,S (2311) ICCF 2010 1/2-1/2 (96)}) 8... Qe7 9. g3 Nh6 10. Be3 Bxe3 11. Qxe3 O-O 12. Nbd2 d5 13. e5 Bd7 14. h4 Rfd8 15. Bh3 c5 16. h5 Nf8 17. Kf2 Rac8 18. g4 {Groenendijk,P (2129)-Sciupokas,A (2125) ICCF 2020 1-0 (42)}) (6... Bc5 7. Nc3 Qe7 (7... Nh6 8. Qe2 (8. f5 exf5 9. Bg5 Ne7 10. Bxh6 gxh6 11. Qd2 Bb4 12. Qd4 Bxc3+ 13. Qxc3 Rf8 14. exf5 d5 15. g4 Qd6 16. O-O-O Bd7 17. Qe3 c5 18. Re1 d4 19. Qe5 {Grammatica,A (2130) -Kokorin,V (2325) ICCF 2011 1-0 (33)}) 8... O-O 9. f5 Nh4 10. Bf4 Kh8 11. O-O-O exf5 12. Bg5 Be7 13. Bxh6 gxh6 14. e5 Ng6 15. Nd5 c6 16. Nxe7 Qxe7 17. Qe3 Re8 18. Qd4 Nxe5 19. Bc4 {Fernández Medina,E-Alzola Tovar,P (2255) ICCF 2007 1-0 (81)}) (7... d6 8. Na4 Bb4+ 9. c3 Ba5 10. b4 Bb6 11. Bd3 Nf6 12. Nxb6 axb6 13. e5 Nd5 14. Bxg6+ hxg6 15. O-O Bd7 16. Qd3 Ne7 17. Ng5 b5 18. exd6 cxd6 19. Qxd6 {Rudykh,S (2202)-Dreisch,J (2031) ICCF 2017 1-0 (47)}) 8. h4 d5 9. Qd3 Nf6 10. h5 Nf8 11. Be3 Ng4 (11... Bd7 12. Bxc5 Qxc5 13. Ne5 dxe4 14. Qg3 Rg8 15. O-O-O O-O-O 16. Bc4 Re8 17. a3 a6 18. Rhe1 {Gavrijski,D (2180)-Sciupokas,A (2125) ICCF 2020 1-0 (42)}) 12. Bxc5 Qxc5 13. Nd4 e5 14. fxe5 dxe4 15. Nxe4 Qa5+ 16. b4 Qxe5 17. O-O-O Ne6 18. Qb5+ {Kornyushin,N (2276)-Sciupokas,A (2125) ICCF 2020 1-0 (53)}) 7. h4 (7. Bd3 dxe4 8. Bxe4 Qxd1+ 9. Kxd1 Nf6 10. Bxg6+ hxg6 11. h3 Bd6 12. Nc3 O-O 13. g3 b6 14. Ng5 e5 15. Nb5 Bb7 16. Re1 Rad8 17. Nxd6 Rxd6+ 18. Ke2 Nd5 {Herbert,G (1952)-Brotherton,T (2117) ICCF 2014 1/2-1/2}) (7. e5 Nh6 8. g3 Bd7 9. Nc3 c5 10. Bh3 Be7 11. O-O Rf8 12. b4 Qb6 13. b5 a6 14. bxa6 Qxa6 15. a4 Nf5 16. Bd2 Rc8 17. Nb5 Bxb5 18. axb5 Qxb5 {Oren,A-Gravelle,G (1814) ICCF 2019 1-0 (49)}) (7. g3 Bd7 (7... Bc5 8. Qe2 Nf6 9. Qb5+ Nd7 10. Nc3 O-O 11. h4 c6 12. Qe2 b5 13. a3 Nh8 14. e5 a5 15. Nd1 Bb6 16. Be3 Bb7 17. c3 Re8 18. Qc2 c5 19. Ng5 {Rodriguez,L (2159)-Kruimer,W (2097) ICCF 2017 1-0 (35)} ) 8. Nc3 dxe4 9. Nxe4 Bc6 10. Bd3 Qd5 11. Bd2 O-O-O 12. Qe2 e5 13. f5 N6e7 14. Neg5 Nf6 15. Bc4 Qc5 16. Nf7 Bxf3 17. Be6+ Kb8 18. Qxf3 Nc6 {Volkov,A (1850) -Hoogkamer,M (1963) ICCF 2020 1-0 (46)}) 7... Bb4+ 8. c3 Bc5 9. e5 Nh6 10. h5 Ne7 11. Ng5 O-O (11... Nhf5 12. Rh3 h6 13. Nf3 O-O 14. Bd3 Nd6 15. exd6 cxd6 16. Nh4 e5 17. Rh1 Bd7 18. Rf1 Rc8 19. a4 e4 20. Be2 d4 21. cxd4 Bxd4 22. Nc3 Bf6 23. Rh1 {Poelvoorde,H (1980)-Dahm,W (2057) ICCF 2020 1-0 (36)}) 12. Bd3 Nef5 13. Rh3 {Barkov,K-Belanoff,S (2201) ICCF 2015 1-0 (41)}) (1... b5 2. e4 ( 2. Nf3 Bb7 (2... d5 3. Bf4 Nf6 4. e3 Bd7 5. Bd3 e6 6. Qe2 c5 7. Bxb5 Qb6 8. c4 Bxb5 9. cxb5 cxd4 10. Nxd4 Bb4+ 11. Nc3 Bxc3+ 12. bxc3 Nbd7 13. O-O e5 14. Nc6 {Fagherazzi,M-Babychuk,V (2300) ICCF 2009 0-1}) 3. e3 (3. g3 e6 4. b3 (4. Bg2 c5 5. c3 Na6 6. O-O Be7 7. Ne5 Bxg2 8. Kxg2 Nf6 9. Bg5 Qb6 10. Nf3 O-O 11. Nbd2 cxd4 12. cxd4 Nc7 13. Rc1 Rfc8 14. Re1 Ncd5 15. Qb3 a5 {Maisonneuve,L (1651) -Jean,L (1860) ICCF 2017 0-1 (33)}) 4... Nf6 5. Bg2 Be7 6. O-O O-O 7. Nbd2 a6 8. Bb2 d5 9. c4 dxc4 10. bxc4 bxc4 11. Nxc4 Nbd7 12. Na5 Rb8 13. d5 exd5 14. Qd2 c6 {Anderson,L (812)-Rouse,L ICCF 2020 0-1 (36)}) (3. a4 b4 4. c3 e6 5. Bf4 Nf6 6. e3 Be7 7. Nbd2 a5 8. Bd3 Nc6 9. O-O Nd5 10. c4 Nxf4 11. exf4 Bf6 12. Nb3 d6 13. c5 O-O 14. Rc1 Ne7 {Myers,R-Saunders,B ICCF 2012 1/2-1/2 (35)}) 3... a6 4. a3 (4. c4 c6 5. Nc3 Nf6 6. Bd3 e6 7. O-O d6 8. e4 h6 9. cxb5 cxb5 10. Qb3 Nbd7 11. a4 Qa5 12. Re1 g5 13. Bd2 Bg7 14. Nxb5 Qb6 15. a5 Qd8 {Altanoch,G (2137)-Brice Clausel,T ICCF 2020 1-0}) (4. Be2 Nf6 5. c4 bxc4 6. Bxc4 e6 7. a3 d5 8. Be2 a5 9. O-O Be7 10. Nbd2 O-O 11. Bd3 Nbd7 12. e4 dxe4 13. Nxe4 Bxe4 14. Bxe4 Nxe4 15. Re1 Nef6 {Hardwick,M (1480)-Traut,G (1986) ICCF 2015 0-1 (28)}) 4... e6 5. Be2 (5. c4 g6 6. cxb5 Qf6 7. bxa6 Bxa6 8. Bxa6 Nxa6 9. O-O Nb4 10. Nc3 Ne7 11. Bd2 Nd3 12. Qc2 Nxf2 13. Rxf2 c6 {Aiken,J-Fernandez,Q (1455) ICCF 2019 1-0 (28)}) 5... c5 6. c3 Nf6 7. Bd3 c4 8. Bc2 Ne4 9. O-O {1-0 (9) Williams,R (1045)-Miller,J (1560) ICCF 2019}) (2. Bg5 Bb7 3. Nd2 (3. Nf3 h6 4. Bh4 g5 5. Bg3 Nf6 6. Nbd2 g4 7. Ne5 d6 8. Nd3 Nbd7 9. e3 a6 10. c4 c5 11. dxc5 dxc5 12. Qb3 Qa5 13. O-O-O Bg7 14. Ne5 Nxe5 {Sladek,V (1817)-Stapinski,R (1850) ICCF 2018 0-1 (28)}) 3... h6 4. Bf4 Nf6 5. Ngf3 e6 6. e3 a6 7. Bd3 c5 8. dxc5 Bxc5 9. c3 O-O 10. O-O Be7 11. a4 d6 12. e4 Nbd7 13. axb5 Nc5 {Bas Fortuny,M (2041)-De Filippis,F (2420) ICCF 2011 0-1 (30)}) (2. Bf4 Bb7 (2... e6 3. e4 b4 4. a3 Nf6 5. axb4 Nxe4 6. Qf3 Bb7 7. c3 Bd5 8. Qe3 Bd6 9. Nh3 O-O 10. Bd3 f5 11. Bxe4 Bxf4 12. Nxf4 Bxe4 13. Nd2 Bb7 14. O-O {Bartel,R-Stasiak,W (1617) ICCF 2014 1-0 (32)}) 3. Nf3 e6 4. e3 a6 5. c4 bxc4 6. Bxc4 Nf6 7. Nc3 Nc6 8. O-O Bd6 9. Bg3 Bxg3 10. hxg3 O-O 11. Qc2 Nb4 12. Qb3 Rb8 13. Qxb4 Bxf3 { Løvås,R (1683)-Skaug,T (2130) ICCF 2013 0-1}) (2. e3 a6 3. c4 bxc4 4. Bxc4 d5 5. Bd3 e6 6. Nf3 Nf6 7. Nc3 c5 8. O-O Bb7 9. Ne5 Nbd7 10. f4 Bd6 11. Qf3 Rc8 12. Qe2 Qb6 13. Kh1 O-O {Anderson,J (1627)-Jamieson,I ICCF 2007 1/2-1/2}) (2. d5 Nf6 3. e3 b4 4. a3 bxa3 5. Nxa3 a5 6. Nf3 d6 7. Bb5+ c6 8. dxc6 e6 9. c7+ Nfd7 10. cxd8=Q+ Kxd8 11. Ng5 Nb6 12. Nxf7+ Kc7 13. Nxh8 Bb7 {Santamaría Quintana,I (1232)-Rodríguez Padilla,N ICCF 2014 1/2-1/2 (41)}) (2. f3 e5 3. d5 c6 4. e4 cxd5 5. Bxb5 Qa5+ 6. Nc3 d4 7. Nge2 dxc3 8. Nxc3 Nf6 9. Bc4 Bb4 10. O-O Qc5+ 11. Kh1 Qxc4 12. Rf2 Bxc3 13. Qd6 Bd4 {Miedema,H (1203)-Dam,J (1675) ICCF 2017 0-1}) 2... Bb7 (2... a6 3. Bd3 e6 4. Be3 Bb7 5. f3 Nc6 6. c3 Nf6 7. Nd2 h5 8. Nh3 Be7 9. O-O g6 10. Qc2 e5 11. d5 Na7 12. c4 c6 13. b3 Qa5 14. Qb2 {Varonen,H-Ylönen,O ICCF 2009 1-0 (52)}) (2... b4 3. f4 Bb7 4. Bd3 Nf6 5. Qe2 e6 6. c4 c5 7. d5 exd5 8. exd5+ Qe7 9. b3 Nxd5 10. cxd5 Bxd5 11. Kf2 Qxe2+ 12. Nxe2 Be7 13. Bb2 Bh4+ 14. Ng3 {Kilyk,B-Stasiak,W (1564) ICCF 2010 1-0 (36)}) ( 2... Ba6 3. Nc3 c6 4. b4 Nf6 5. Nf3 d6 6. g3 Nbd7 7. a4 Rc8 8. axb5 cxb5 9. Rxa6 g6 10. Bb2 Rc4 11. Bxc4 bxc4 12. Rxa7 e6 13. e5 Qb6 14. Ra8+ {Sousa, B-Whittle,P ICCF 2012 1-0}) (2... d5 3. exd5 Qxd5 4. Nc3 Qd8 5. Bxb5+ c6 6. Ba4 e5 7. Nf3 Nf6 8. Nxe5 Qc7 9. Bb3 Be6 10. Qe2 Nbd7 11. Nxf7 Ne5 12. Nxh8 Neg4 13. Bxe6 Qe7 14. O-O {Mrachek,S (2101)-Byrne,V (1545) ICCF 2015 1-0}) (2... e6 3. Bxb5 Bb7 4. Bd3 h5 5. Nc3 Nc6 6. Nf3 d5 7. exd5 exd5 8. O-O h4 9. Re1+ Be7 10. h3 Qd6 11. Nb5 Qd7 12. Bf4 O-O-O 13. Bxc7 Re8 14. Ne5 {Loik,G (1928)-Byrne, V (1634) ICCF 2014 1-0}) (2... g6 3. Bxb5 c6 4. Bd3 a5 5. Nf3 Nf6 6. e5 Nd5 7. c4 Nb6 8. Nc3 Bg7 9. O-O O-O 10. Re1 a4 11. Qe2 h6 12. Bf4 Ra5 13. Rac1 e6 14. Qe3 {Cañamas Soler,J (2265)-Rodríguez Padilla,N (1464) ICCF 2014 1-0}) 3. Bxb5 (3. Nd2 a6 4. Ngf3 (4. a4 Nf6 5. e5 Nd5 6. Ngf3 bxa4 7. Rxa4 (7. Bd3 e6 8. O-O Nb6 9. Ne4 h6 10. Re1 d5 11. exd6 cxd6 12. c4 d5 13. cxd5 Bxd5 14. Ne5 N8d7 15. Qf3 Nxe5 16. dxe5 Bb4 17. Rd1 Nd7 18. Qg4 Qb8 {Biedermann,T (2412)-De Filippis, F (2418) ICCF 2012 1-0 (35)}) 7... e6 8. Bd3 Nf4 9. Be4 Bc6 10. Bxc6 Nxc6 11. O-O Nd5 12. Ne4 Be7 13. Ra1 Nb6 14. Qe2 a5 15. c4 O-O {Blau,D (2207)-De Filippis,F (2420) ICCF 2011 1/2-1/2 (29)}) 4... e6 5. a4 (5. Bd3 c5 6. c3 (6. dxc5 Bxc5 7. Nb3 (7. a4 Nf6 8. e5 Ng4 9. O-O Qc7 10. Ne4 Nxe5 11. Bf4 d6 12. Nxe5 dxe5 13. Nxc5 Qxc5 14. Be3 Qc6 15. Qg4 g6 16. axb5 axb5 17. f3 Rxa1 18. Rxa1 O-O {Alberny,M (2089)-Jean,L (1813) ICCF 2015 1-0 (39)}) (7. O-O Nf6 8. e5 Nd5 9. a4 bxa4 10. Rxa4 O-O 11. Bxh7+ Kxh7 12. Ne4 Be7 13. Nfg5+ Bxg5 14. Nxg5+ {Arkefeldt,F (2021)-Williams,B ICCF 2020 1-0}) 7... Be7 8. O-O Nc6 9. a4 b4 10. Re1 d6 11. c3 Nf6 12. Bd2 d5 13. e5 Ne4 14. Bxe4 dxe4 15. Rxe4 Qd5 16. Re1 Rd8 17. Qc2 bxc3 {Brzoza,M (2254)-Stapinski,R (1993) ICCF 2007 1/2-1/2 (29)}) 6... cxd4 7. cxd4 d6 8. O-O Nf6 9. a4 Be7 10. axb5 axb5 11. Rxa8 Bxa8 12. Bxb5+ Nbd7 13. Qe2 O-O 14. b3 Qb6 15. e5 dxe5 16. dxe5 Bxf3 {Kim,V-Rouse,L (1449) ICCF 2021 1-0 (34)}) 5... b4 6. Bd3 d6 (6... c5 7. d5 (7. O-O Nf6 (7... cxd4 8. Nxd4 d6 (8... Nc6 9. Nxc6 Bxc6 10. a5 Nf6 11. Qe2 Qc7 12. Re1 Be7 13. e5 Nd5 14. Qg4 O-O 15. Nc4 f5 16. exf6 Bxf6 17. Qe4 g6 18. Bh6 Qa7 19. Rf1 Qc5 20. Bxf8 { Elwood,D (2021)-Lobley,J (2008) ICCF 2019 1/2-1/2 (30)}) 9. N2b3 Nf6 10. Qe2 Nbd7 11. Bd2 d5 12. exd5 Nxd5 13. Rfe1 Be7 14. Nxe6 fxe6 15. Qh5+ Kf8 16. Nd4 Qe8 17. Nxe6+ Kg8 18. Qh3 Nf8 19. Nxg7 {Orlovtsev,A (2256)-Stapinski,R (1852) ICCF 2017 1-0}) 8. e5 Nd5 9. Ne4 cxd4 10. Nxd4 Nc6 11. Nxc6 dxc6 12. Bg5 Qc7 13. Re1 h6 14. Bh4 Nf4 15. Qg4 Nd5 16. Nd6+ Bxd6 17. exd6 Qxd6 18. Qxg7 Rf8 { Hanssen,F (2271)-Dam,J (1744) ICCF 2015 1-0 (28)}) 7... exd5 8. O-O g6 9. Re1 dxe4 10. Nxe4 Be7 11. Nd6+ Kf8 12. Nxb7 Qc7 13. Bc4 Qxb7 14. Ne5 Nf6 15. Bh6+ Ke8 16. Nxf7 d5 17. Nd6+ {1-0 (17) Kanios,M (1874)-Stasiak,W (1599) ICCF 2012}) (6... Nf6 7. O-O Be7 8. e5 Nd5 9. Ne4 a5 10. c4 bxc3 11. bxc3 Ba6 12. Bb5 O-O 13. Qd3 c6 14. Bxa6 Nxa6 15. Ba3 Bxa3 16. Rxa3 c5 17. Rb1 cxd4 18. Qxd4 { Martínez Puigrós,R-Stapinski,R (1744) ICCF 2020 1/2-1/2 (32)}) 7. O-O (7. Nc4 Nf6 8. Bg5 d5 9. exd5 Bxd5 10. Qe2 Be7 11. O-O O-O 12. Rfd1 h6 13. Bf4 c5 14. a5 Nbd7 15. c3 bxc3 16. bxc3 cxd4 17. cxd4 Bb4 18. h3 Rc8 {Dessaules,P (2156) -De Filippis,F (2425) ICCF 2010 1/2-1/2 (32)}) 7... Nf6 8. Qe2 Be7 9. Nb3 a5 ( 9... c5 10. dxc5 dxc5 11. Bf4 O-O 12. Nfd2 Nc6 13. Nc4 Nd4 14. Nxd4 cxd4 15. e5 Nd7 16. Qg4 Re8 17. h4 Bd5 18. h5 Bxc4 19. Bxc4 Qc7 20. Qe2 Nc5 21. b3 { Kreindl,H (2312)-De Filippis,F (2418) ICCF 2012 1-0 (44)}) 10. c4 Nbd7 11. d5 e5 12. c5 c6 13. dxc6 Bxc6 14. cxd6 Bxd6 {Cattani,M (2426)-De Filippis,F (2455) ICCF 2009 1-0 (71)}) (3. Bd3 Nf6 (3... e6 4. Nf3 (4. Be3 f5 5. exf5 Bxg2 6. fxe6 Nf6 7. Nf3 Bxh1 8. Ng5 dxe6 9. Nxe6 Qd6 10. Bxb5+ c6 11. Bc4 Bd5 12. Bxd5 cxd5 13. Nxf8 Rxf8 14. Qe2 Kf7 15. Nd2 Nc6 {Alves,T (1737)-Wagner,K ICCF 2010 0-1 (25)}) 4... c5 5. Bxb5 (5. dxc5 Bxc5 6. O-O a6 7. a3 Nc6 8. Nbd2 Nge7 9. b4 Ba7 10. Bb2 O-O 11. c4 bxc4 12. Nxc4 d5 13. exd5 Nxd5 14. g3 Qe7 15. Rc1 Rad8 16. Qe2 Nf6 {Zlatariu,M (2388)-Korkus,M (2228) ICCF 2012 1/2-1/2 (53)}) (5. O-O c4 6. Re1 cxd3 7. Qxd3 Qb6 8. Be3 Nf6 9. d5 Bc5 10. Nc3 a6 11. Bxc5 Qxc5 12. Ne5 O-O 13. Re2 d6 14. Nf3 b4 15. Na4 Qb5 16. b3 exd5 {Humbert,P (1195)-Jean,L (1860) ICCF 2017 0-1 (28)}) 5... Qa5+ 6. Nc3 cxd4 7. Nxd4 Bxe4 8. O-O Bc5 9. Nxe4 Bxd4 10. Nd6+ Ke7 11. Qxd4 Qb6 12. Qxb6 axb6 13. Bf4 Nc6 14. a4 Nd4 15. c3 {Hodgkins,N-Simonson,J ICCF 2014 1-0 (33)}) (3... f5 4. f3 fxe4 5. fxe4 Nf6 6. e5 Bxg2 7. exf6 Bxh1 8. Qh5+ g6 9. Qxg6+ {1-0 (9) Schleef,H-Fernandez,Q (1455) ICCF 2019}) 4. Qe2 (4. Nd2 c5 (4... e6 5. c3 (5. Ngf3 a6 6. O-O Be7 7. e5 Nd5 8. c3 d6 9. Ne4 Nd7 10. Qe2 Rb8 11. exd6 cxd6 12. Nfg5 Nf8 13. Qh5 Ng6 14. g3 Qc7 15. Bd2 Bxg5 16. Nxg5 Nf6 {Agnäs,T (1800)-Dam,J ICCF 2014 1/2-1/2 (72)}) 5... c5 6. Ne2 a6 7. O-O Be7 8. e5 Nd5 9. Ne4 cxd4 10. Nxd4 Nc6 11. Qg4 Nxe5 12. Qxg7 Bf6 13. Qg3 Nxd3 14. Nd6+ Ke7 15. Nxb7 Qc7 16. Qxd3 {Svaton,F (1926) -Jean,L ICCF 2013 0-1}) 5. c3 (5. dxc5 Qc7 6. Ngf3 e6 7. b4 Nc6 8. Rb1 a5 9. a3 axb4 10. axb4 d6 11. e5 dxe5 12. Bxb5 {1-0 (12) Soltau,A (2621)-Tkaczyk,P (2508) ICCF 2002}) 5... c4 (5... cxd4 6. cxd4 Nc6 (6... e6 7. Ngf3 Nc6 (7... a6 8. O-O Be7 9. a4 Nc6 10. axb5 (10. Re1 Qb6 11. axb5 axb5 12. Rxa8+ Bxa8 13. Nb3 O-O 14. Bd2 Rc8 15. Qe2 Nb4 16. Bb1 Qa7 17. Qxb5 Rb8 18. Qe2 Na6 19. Qd3 Nb4 20. Qc3 d6 21. Bg5 h6 {Harding,A (2275)-Fernández,J (2426) ICCF 2020 1/2-1/2 (34)}) 10... Nb4 11. Be2 axb5 12. Rxa8 Qxa8 13. d5 Qb8 14. dxe6 fxe6 15. Bxb5 O-O 16. Qe2 Na2 17. Bd3 Qa8 18. Rd1 Rc8 19. Bc4 {Bailey,K (2176)-Lacrosse,M (2218) ICCF 2006 0-1}) 8. O-O Be7 9. Bxb5 Qb6 10. Qa4 O-O 11. Re1 a6 12. Be2 d5 13. e5 Ne4 {Sisák,R (2326)-Zdziech,M (2184) ICCF 2021}) 7. Ngf3 Qb6 8. d5 Nb4 9. Bb1 e6 10. O-O Rc8 11. a3 Na6 12. b4 Nc7 13. Qe2 exd5 14. e5 Nh5 15. Nb3 Ne6 16. Be3 d4 17. Nbxd4 {Datta,D (2268)-De Filippis,F (2443) ICCF 2010 1-0 (76)}) 6. Bc2 d6 7. Ngf3 e6 8. O-O Nbd7 9. a4 a6 10. Qe2 (10. Re1 Be7 11. axb5 axb5 12. Rxa8 Qxa8 13. b3 Qa1 14. bxc4 bxc4 15. Nxc4 Qxc3 16. Ncd2 O-O 17. Re3 Qc7 18. Bb2 Rb8 19. Rc3 {1/2-1/2 (19) Roelofs,R (2148)-Etmans,M (2029) ICCF 2005}) 10... Qc8 11. d5 e5 12. b3 cxb3 13. Nxb3 Qxc3 14. Be3 Be7 15. Rfc1 O-O { Campbell,E (2099)-Stapinski,R (1840) ICCF 2018 1-0 (38)}) 4... c5 5. dxc5 (5. c3 cxd4 6. Nf3 dxc3 7. Nxc3 b4 8. Nb5 a6 9. Nbd4 d6 10. O-O Nbd7 11. Rd1 g6 12. a3 bxa3 13. Rxa3 Bg7 14. Nb3 a5 15. e5 dxe5 16. Nxe5 Nxe5 {Silva Lopes,J (2073) -De Filippis,F (2425) ICCF 2010 0-1 (49)}) 5... Na6 6. c6 (6. Bxb5 Nxc5 7. f3 e6 8. Nc3 Be7 9. Nh3 O-O 10. O-O a6 11. Bc4 d5 12. exd5 Nxd5 13. Bd2 Bf6 14. Rab1 Qc7 15. Ne4 Nxe4 16. fxe4 Nb6 17. Bd3 Nd7 {Magalhães,L (2521)-De Filippis, F (2418) ICCF 2011 1-0 (60)}) 6... Bxc6 7. a4 Nc5 8. axb5 Nxd3+ (8... Bxe4 9. Bxe4 Ncxe4 10. Nf3 e6 11. O-O d5 12. Be3 Bc5 13. Nc3 Qc7 14. Nxe4 Nxe4 15. Rfc1 Bxe3 16. Qxe3 Qb7 17. c4 dxc4 18. Rxc4 Nd6 19. Rc6 Nxb5 20. Qc5 {Groot,P (2245) -Dijk,J (1797) ICCF 2019 1-0}) 9. cxd3 Bxb5 10. Nf3 e6 11. O-O Bc6 12. Na3 Be7 13. Bf4 O-O 14. Rfc1 Rc8 {Nemec,Z (2156)-Blittkowsky,R (2104) ICCF 2021 1/2-1/ 2 (37)}) (3. f3 a6 (3... c6 4. c4 bxc4 5. Bxc4 d5 6. exd5 cxd5 7. Bd3 Nf6 8. Qb3 Qd7 9. Ne2 e6 10. Nbc3 Be7 11. Be3 O-O 12. O-O Nc6 13. a3 Na5 14. Qd1 Nc4 15. Bxc4 {Davis,J (1481)-Pennella,D ICCF 2017 0-1 (36)}) 4. Be3 (4. a4 b4 5. a5 (5. Be3 e6 6. Nd2 Nf6 7. Bd3 d5 8. e5 Nfd7 9. f4 c5 10. Ngf3 Be7 11. O-O c4 12. Be2 Nc6 13. Qe1 O-O 14. Qg3 a5 15. Qh3 Nb6 16. f5 exf5 {Norman,N (2109)-De Filippis,F (2420) ICCF 2011 1/2-1/2 (28)}) 5... e6 6. c3 c5 7. Be3 cxd4 8. Bxd4 Nc6 9. Qa4 Nxd4 10. cxd4 Qh4+ 11. g3 Qg5 12. Qb3 Qc1+ 13. Kf2 Rc8 14. Ne2 Qc2 15. Qa2 b3 {Humbert,P (1124)-Jean,L (1881) ICCF 2017 0-1}) 4... e6 (4... Nf6 5. Nd2 d6 6. c4 c6 7. Bd3 g6 8. Ne2 Bg7 9. Qb3 O-O 10. O-O Nbd7 11. cxb5 cxb5 12. a4 Bc6 13. axb5 Bxb5 14. Bxb5 axb5 15. Rfc1 Qb8 16. Qb4 {Zande,H-Salmon,G ICCF 2019 1/2-1/2 (28)}) 5. Nd2 Ne7 (5... Nf6 6. c3 {1-0 (6) Frey Beckman,K (2612) -Tkaczyk,P (2508) ICCF 2002}) 6. Bd3 Nbc6 7. Ne2 Nb4 8. O-O Nxd3 9. cxd3 Ng6 10. Nb3 Be7 11. Nc5 Bxc5 12. dxc5 O-O 13. d4 c6 14. Rc1 d5 {Svoboda,J (1865) -Lucan,Z (1576) ICCF 2015 1-0}) (3. e5 e6 4. Nf3 a6 5. c4 bxc4 6. Bxc4 Bb4+ 7. Nc3 Nc6 8. O-O Nge7 9. a3 Na5 10. Bd3 Bxc3 11. bxc3 Bxf3 12. Qxf3 Nb3 13. Rb1 Nxc1 14. Rfxc1 O-O {Baumgartner,U (2395)-Jean,L ICCF 2013 1/2-1/2 (49)}) 3... Bxe4 4. Nf3 (4. Nc3 Bxg2 5. Bf4 Bxh1 6. Qe2 Bb7 7. O-O-O Nf6 8. Qc4 c6 9. Ba4 Ba6 10. Qc5 e6 11. Bd6 Bxd6 12. Qxd6 Qe7 13. Qxe7+ Kxe7 14. Nf3 d6 {0-1 (14) Mayo Murube,D-Dam,J (1639) ICCF 2017}) 4... Nf6 (4... e6 5. O-O c6 6. Ba4 Qa5 7. Nc3 Bg6 8. a3 Bd6 9. Bd2 Qb6 10. b4 Qc7 11. Ne5 Bxe5 12. dxe5 Qxe5 13. Be3 Nf6 14. Bd4 Qh5 15. Qxh5 Bxh5 16. Bc5 {Dewald,H (1859)-Dlugolecki,G (2064) ICCF 2013 0-1 (62)}) 5. O-O e6 (5... g6 6. c4 Bg7 7. Nc3 Bb7 8. Re1 O-O 9. Bg5 d6 10. Qe2 h6 11. Bh4 Nbd7 12. d5 a6 13. Ba4 Nc5 14. Bc2 e5 15. b4 Ncd7 16. Nd2 a5 17. b5 {Walton,J-Hebrard,J (1879) ICCF 2018 1/2-1/2 (34)}) 6. c4 (6. Re1 Bb7 7. c4 Bb4 8. Nbd2 O-O 9. Ba4 a5 10. a3 Be7 11. Qe2 h6 12. h3 d5 13. c5 Bc6 14. Bc2 Nbd7 15. Nb1 Ne4 16. Nc3 f5 17. Bf4 Bf6 {Roth,P (2062)-Freire,D (2024) ICCF 2015 1-0 (49)}) 6... Be7 (6... c6 7. Ba4 Be7 8. Nc3 Bg6 9. Ne5 O-O 10. Re1 (10. Qe2 Qc7 11. h3 d5 12. Bf4 Qb7 13. cxd5 cxd5 14. Rac1 Nfd7 15. Nxg6 hxg6 16. Nb5 {1-0 (16) Otspere,U (2235)-Binas,J (2164) ICCF 2014}) 10... Qc8 11. Bf4 d6 12. Nxg6 hxg6 13. Rc1 Nh5 14. Be3 Nd7 15. d5 exd5 16. cxd5 c5 17. b4 cxb4 18. Nb5 {Hughes,G (1693)-MacMillen,A (1704) ICCF 2017 1-0 (37)}) (6... Bc6 7. Nc3 Bxb5 8. Nxb5 a6 9. Nc3 Be7 10. Bf4 O-O 11. Re1 d5 12. cxd5 exd5 13. Rc1 Bd6 14. Bg5 c6 15. Ne5 h6 16. Bh4 Be7 17. Na4 g5 18. Bg3 {Davis,J (1603)-Wright,D (1618) ICCF 2015 1-0}) 7. Nc3 Bb7 8. Re1 (8. Ba4 O-O 9. Bc2 d6 10. b3 Nbd7 11. Re1 c5 12. Bb2 Bxf3 13. gxf3 Nh5 14. Ne2 cxd4 15. Bxd4 Rc8 16. Qd2 Nhf6 17. Kh1 Qc7 18. Rac1 Ne5 19. Qe3 Qb7 {Bianchin,R (2192)-De Filippis,F (2455) ICCF 2009 0-1 (63)}) (8. d5 O-O 9. Ba4 Bb4 10. Bg5 Bxc3 11. bxc3 h6 12. Bh4 Na6 13. Ne5 Nc5 14. Ng4 Nxa4 15. Qxa4 exd5 16. cxd5 h5 17. Nxf6+ gxf6 18. Rfe1 Re8 19. Qf4 Bxd5 {Soto Palomo,C-Darias Mateos,A ICCF 2006 1-0}) 8... O-O 9. Ba4 (9. h3 d6 10. Qe2 c6 11. Ba4 Nbd7 12. Bf4 Nb6 13. Bc2 d5 14. c5 Nbd7 15. b4 a6 16. a4 Qc8 17. a5 Re8 18. Na4 Qd8 19. Ra3 Ra7 20. Nb6 g6 {Hämmerle,D (2147)-Feldis,Y (2113) ICCF 2018 1-0 (31)}) 9... d6 (9... c6 10. Rb1 a5 11. a3 d6 12. b4 axb4 13. axb4 {Datler,W (2383)-Armengol Comas,J (2362) ICCF 2011 1-0 (34)}) (9... a5 10. h3 (10. a3 d6 11. d5 e5 12. c5 dxc5 13. Nxe5 Nxd5 14. Qb3 Nb6 15. Bf4 Bd5 16. Nxd5 Qxd5 17. Qc2 Nxa4 18. Rad1 Qb7 19. Qxa4 Ra6 20. Nd7 Nxd7 21. Rxe7 Rg6 {Schwenk,H (2177)-Kurpnieks,V (2149) ICCF 2017 1/2-1/2 (48)}) 10... Bb4 11. Bg5 Be7 12. Qe2 h6 13. Bd2 Bb4 14. a3 Bxc3 15. Bxc3 Ne4 16. Qd3 Nxc3 17. bxc3 Bxf3 18. Qxf3 Na6 19. Rab1 c6 20. Bc2 Rb8 21. Qd3 {Chronopoulos,A-Barroqueiro,S ICCF 2020 1-0 (29)}) 10. d5 e5 (10... exd5 11. Bg5 h6 12. Bh4 c5 13. cxd5 Ba6 14. Qd2 Nbd7 15. Qe3 Ne5 16. Nxe5 dxe5 17. Qxe5 Bd6 18. Qf5 Bc8 19. Qf3 g5 20. Bg3 Rb8 21. b3 Bg4 22. Qe3 {Scheijndel van,T-Chromczak,T (1964) ICCF 2021 1-0 (27)}) 11. Be3 (11. Qb3 Bc8 12. h3 Nfd7 13. Be3 Nb6 14. c5 Nxa4 15. Qxa4 f5 16. Nb5 f4 17. Bd2 Na6 18. cxd6 cxd6 19. Rac1 Kh8 20. Qa3 Qd7 21. Rxc8 Qxc8 22. Nxd6 Qc7 {Schuster,J (2355)-De Filippis,F (2425) ICCF 2010 1/2-1/2 (33)}) (11. b4 c6 12. Be3 cxd5 13. Nxd5 Nxd5 14. cxd5 f5 15. Qb3 f4 16. Bd2 Kh8 17. Rac1 Bc8 18. Qa3 a6 19. Qd3 Bf5 20. Qe2 Ra7 21. Bc2 {Kuznetsov,S (2448)-Rybák,M (2433) ICCF 2013 1/2-1/2 (58)}) (11. c5 Bc8 12. c6 a5 13. h3 (13. a3 Na6 14. Bc2 Rb8 15. Rb1 Re8 16. Nd2 Bg4 17. f3 Bh5 18. Nc4 e4 19. g4 Bg6 20. f4 h6 21. h3 Qc8 22. Rf1 Bh7 23. f5 Ra8 24. Nxa5 Nc5 {Gonzaga Grego,L (2405)-Bon Alonso, A ICCF 2017 1-0 (34)}) 13... Kh8 14. a3 Na6 15. Bc2 Ng8 16. Rb1 f5 17. b4 axb4 18. axb4 e4 19. Nd2 Bg5 20. Nc4 Bxc1 21. Qxc1 Rb8 22. b5 Nc5 {Barclay,A (2027) -Walther,J (2243) ICCF 2016 1/2-1/2 (42)}) 11... Ng4 12. Bd2 Nd7 13. h3 { Karacsony,Z (2470)-De Filippis,F (2418) ICCF 2012 1/2-1/2 (39)}) (1... g6 2. c4 (2. b3 Bg7 3. Bb2 (3. e3 e5 4. Nf3 d6 5. Bb2 e4 6. Ng5 Qxg5 7. Qd2 d5 8. Bb5+ c6 9. Bf1 Ne7 10. Be2 Qxg2 11. Rf1 Bh3 12. Kd1 Qxh2 13. Ba3 Nf5 14. Qb4 Bf6 { Miedema,H (862)-Gosling,D (1317) ICCF 2019 0-1}) 3... c5 4. Nf3 cxd4 5. Bxd4 Nf6 6. e3 (6. g4 Nc6 7. Bb2 Qb6 8. e3 O-O 9. g5 Ne4 10. Bxg7 Kxg7 11. Bc4 Qa5+ 12. Nbd2 Nc3 13. Qc1 d5 14. Qb2 e5 15. O-O dxc4 16. Nxc4 Ne2+ 17. Kh1 Qc3 { Lambert,D (1720)-Rhodes,L (1771) ICCF 2018 0-1}) 6... Nc6 7. Ng5 Qa5+ 8. c3 Qxg5 9. f4 Qa5 10. Be2 Nxd4 11. Qxd4 d5 12. O-O O-O 13. Rf3 Ne4 {Chugg,M (1413) -Thomas,T ICCF 2016 0-1}) (2. Bf4 Bg7 (2... b6 3. e4 Bb7 4. Nc3 Bg7 5. Nf3 a5 6. Bc4 h5 7. Qd2 Na6 8. O-O-O Nh6 9. h3 e6 10. d5 Nc5 11. Rhe1 a4 12. a3 f5 13. Bg5 Qc8 14. Nh4 {Kapila,H-Reid,W (1174) ICCF 2021 1-0 (26)}) (2... c5 3. e3 Bg7 4. c3 Qb6 5. Qb3 Qxb3 6. axb3 cxd4 7. exd4 a6 8. Nd2 d6 9. Nc4 Nd7 10. g3 b5 11. Na5 e5 12. Bg2 Ra7 13. dxe5 dxe5 14. Be3 {Kosic,B (2126)-Trofimov,V (2376) ICCF 2010 1/2-1/2 (48)}) 3. e3 (3. e4 e6 4. Nc3 Ne7 5. Nf3 c5 6. Nb5 Qa5+ 7. b4 Qxb4+ 8. Bd2 Qa4 9. Nd6+ Kf8 10. Bb5 Qxd4 11. Nxd4 Bxd4 12. Qf3 f5 13. Bh6+ Kg8 14. exf5 Nxf5 {Lorenz,B-Giessing,K (1450) ICCF 2017 1-0}) 3... e6 (3... d6 4. Bd3 (4. h3 c5 5. c3 Qb6 6. Qb3 Nf6 7. Nd2 cxd4 8. exd4 Qc7 9. Ngf3 O-O 10. Be2 Nc6 11. Bh2 Be6 12. Qa4 a6 13. O-O b5 14. Qc2 Na5 15. Rfe1 Rfc8 {Brehm, S-Hering,H (2193) ICCF 2012 1/2-1/2 (49)}) 4... Nd7 (4... e5 5. Bg3 exd4 6. exd4 Ne7 7. Nf3 O-O 8. O-O Nf5 9. c3 Nxg3 10. fxg3 Be6 11. Nbd2 Nd7 12. Ne4 Bh6 13. Qc2 f5 14. Nf2 Nf6 15. Rae1 Qd7 16. c4 {Morgans,J (1927)-Ricketts,M (1906) ICCF 2019 0-1 (37)}) 5. Nf3 e6 6. O-O Ne7 7. Re1 O-O 8. Nbd2 e5 9. dxe5 dxe5 10. Bg3 Nf5 11. Bxf5 gxf5 12. Qe2 Re8 13. e4 f4 14. Bh4 f6 15. Nb3 {Cofer,D (1986)-Hayward,C ICCF 2020 1-0 (53)}) (3... Nf6 4. Nc3 O-O 5. h4 (5. Nf3 d6 6. Bd3 Nc6 7. a3 a6 8. O-O Nh5 9. d5 Nxf4 10. exf4 Bg4 11. h3 Bxf3 12. Qxf3 Nd4 13. Qg4 e5 14. f5 Qd7 15. f4 Nxf5 16. Bxf5 gxf5 {Zuil Rebollo,C-De León López, A (1495) ICCF 2015 0-1}) 5... h5 6. Nf3 d5 7. Qd2 c5 8. Ne5 Bf5 9. f3 cxd4 10. exd4 Nc6 11. Nxc6 bxc6 12. O-O-O Qa5 13. Kb1 c5 14. Nb5 Qxd2 15. Rxd2 { Burmeister,F (2209)-Jarecki,M (2140) ICCF 2018 1-0}) 4. Nd2 Ne7 5. Ngf3 O-O 6. Bc4 (6. Bd3 f5 7. h3 Nd5 8. Bh2 Nc6 9. c4 Nf6 10. a3 d6 11. O-O e5 12. dxe5 dxe5 13. Nxe5 Nxe5 14. Bxe5 Qxd3 15. Bxc7 Be6 {0-1 (15) Fiesel,H (1544) -Gutovskyi,M (2183) ICCF 2012}) (6. Be2 Kh8 7. c3 Nf5 8. O-O b6 9. Ne5 Bb7 10. Bf3 Bxf3 11. Qxf3 Na6 12. Qb7 Qc8 13. Qxc8 Raxc8 14. Nxd7 Rfd8 15. Ne5 Bxe5 16. Bxe5+ Kg8 17. Ne4 Kf8 {Anderson,J (1613)-Armstrong,J (1661) ICCF 2008 1-0 (60)} ) 6... d5 7. Bb3 a5 8. c3 b5 9. O-O a4 10. Bc2 c6 11. Qe2 Nd7 12. e4 Ba6 13. Bd3 Nb6 {Price,D (2030)-Armstrong,J (1661) ICCF 2008 1-0 (32)}) (2. Nf3 Bg7 ( 2... c6 3. c4 Bg7 4. Bf4 d6 5. Nc3 Nf6 6. e3 Bg4 7. Be2 Nbd7 8. h3 Bf5 9. g4 Be4 10. Nxe4 Nxe4 11. O-O O-O 12. Nd2 Nef6 13. g5 Ne8 14. h4 {Overturf, S-Knouse,C ICCF 2014 1-0 (36)}) (2... a6 3. c4 Bg7 4. Nc3 e6 5. e4 d6 6. Be2 { 1-0 (6) Gérard,A (1845)-Ipekyilmaz,E ICCF 2012}) (2... b6 3. g3 Bb7 4. Bg2 Nc6 5. O-O Bg7 6. e3 e6 7. c3 Na5 8. b3 Rc8 9. Ba3 c5 10. dxc5 Bd5 11. Nd4 Ne7 12. Nb5 Bxg2 13. Nd6+ Kf8 14. Kxg2 {Enoksson,B (1266)-Symonds Patel,J ICCF 2021 1-0 }) 3. e3 (3. Bf4 c5 (3... f5 4. Nc3 Nf6 5. h3 O-O 6. e3 d6 7. Bc4+ e6 8. g4 Ne4 9. Nxe4 fxe4 10. Nd2 Bxd4 11. c3 Bg7 12. Qc2 a5 13. a3 d5 14. Ba2 Nd7 {Dumont, G (1733)-Eremin,N (2238) ICCF 2017 0-1 (26)}) 4. c3 (4. e3 Qb6 5. b3 Nc6 6. Nbd2 cxd4 7. exd4 Nxd4 8. Bd3 Nxf3+ 9. Nxf3 Bc3+ 10. Bd2 Qe6+ 11. Be2 Bxa1 12. Qxa1 Nf6 13. Bc3 O-O 14. Ng5 Qf5 15. Nf3 Qxc2 {Hardwick,M (1424)-Sosa Landa,H (1688) ICCF 2013 0-1 (52)}) 4... b6 (4... Qb6 5. Qc2 cxd4 6. cxd4 Nc6 7. e3 Nf6 8. Be2 O-O 9. a3 d6 10. h3 Bf5 11. Qc1 Na5 12. Bd1 Rac8 13. Nc3 Nd5 14. O-O Nxf4 15. exf4 Be4 16. Qe3 {Humbert,P (1058)-Morin,S (2251) ICCF 2020 0-1 (28)}) 5. e4 Bb7 6. Bd3 Qc8 7. e5 c4 8. Be2 e6 9. Na3 Bd5 10. Nd2 Bh6 11. Ndxc4 Bxc4 12. Nxc4 Kf8 13. Qd2 Bxf4 14. Qxf4 Qd8 {Gavrijski,D (1983)-Kaytazki,L (1434) ICCF 2017 1-0 (30)}) (3. Nc3 c5 (3... d5 4. e4 Nf6 5. e5 Ne4 6. Nxe4 dxe4 7. Ng5 c5 8. d5 Bxe5 9. Nxe4 O-O 10. c3 Nd7 11. Bh6 Re8 12. Bb5 a6 13. Bxd7 Qxd7 14. Qf3 b6 15. O-O-O {Haase,F (1854)-Anderson,C (1981) ICCF 2020 1/2-1/2 (45)}) (3... d6 4. e3 Nf6 5. Bd3 Nc6 6. h3 O-O 7. Bd2 e5 8. Qe2 exd4 9. exd4 Re8 10. Be3 Nh5 11. d5 Nf4 12. Qf1 Bxc3+ 13. bxc3 Nxd5 14. c4 Qf6 15. Rb1 {Mohammed,H (1756)-Moran,R (1832) ICCF 2015 0-1 (27)}) 4. Be3 (4. dxc5 Nc6 5. e4 e6 6. Nb5 Bf8 7. Bf4 Qa5+ 8. Nc3 Nf6 9. Be3 Nxe4 10. Bd2 Nxd2 11. Qxd2 a6 12. Ne4 Qxd2+ 13. Nfxd2 Nd4 14. O-O-O Be7 15. Nc4 f5 {Golemanov,B (1870)-Kaytazki,L (1482) ICCF 2015 1-0}) 4... cxd4 5. Nxd4 Nf6 6. Nf3 O-O 7. g3 Nc6 8. Bg2 d5 9. O-O e5 10. Bc5 Re8 11. Re1 d4 12. Bxd4 exd4 13. Nb5 Ne4 14. e3 Nxf2 {Mottinger, H-Hernández López,E ICCF 2019 0-1}) (3. c3 d5 (3... f5 4. Bf4 (4. Bg5 Nf6 5. Nbd2 d5 6. e3 Nbd7 7. Bd3 c6 8. Qb3 b5 9. Ne5 Qc7 10. Ndf3 Nxe5 {Rowley,M (1711)-White,C (1755) ICCF 2017}) 4... Nf6 5. e3 O-O 6. Bd3 d6 7. O-O Qe8 8. Bg3 e6 9. Nbd2 Nh5 10. e4 Nxg3 11. fxg3 d5 12. exd5 exd5 13. Re1 Qd8 14. a4 Nd7 15. Qb3 {Jacquin,R (2483)-Rinaldi,C (2401) ICCF 2006 1-0 (70)}) (3... h6 4. e4 e6 5. Bd3 d6 6. O-O a6 7. Qc2 b6 8. Be3 Bb7 9. Nbd2 Ne7 10. c4 Nd7 11. b4 O-O 12. Rab1 f5 13. exf5 gxf5 14. Rfc1 f4 15. Nh4 {Gilbert,R-Paulus,C ICCF 2013 0-1 (30)}) 4. Bf4 c5 5. e3 Qb6 6. Qb3 Nf6 7. Nbd2 O-O 8. Be2 Qxb3 9. axb3 cxd4 10. exd4 Bf5 11. h3 Nc6 12. O-O Ne4 13. Nxe4 Bxe4 14. Nd2 Bc2 {Winter,M-Duiven, G (1851) ICCF 2014 1/2-1/2 (39)}) (3. Nbd2 c5 4. d5 d6 5. c4 Nf6 6. e3 O-O 7. Bd3 e6 8. dxe6 fxe6 9. O-O Nc6 10. a3 b6 11. Qc2 Bb7 12. Ng5 Qd7 13. Ndf3 Ne7 14. e4 Nh5 {Flew,B (1688)-Dempster,D (1753) ICCF 2015 0-1 (25)}) (3. Bg5 c5 ( 3... f6 4. Bf4 d6 5. e3 e5 6. dxe5 fxe5 7. Bg3 e4 8. Bh4 Ne7 9. Nd4 c5 10. Bb5+ Kf7 11. Nc3 cxd4 12. exd4 Qa5 13. O-O Nf5 14. Bc4+ Be6 {MacMillen,A (1794) -Armstrong,J (1560) ICCF 2013 1-0 (89)}) 4. c3 d5 5. e3 b6 6. Bd3 Nc6 7. O-O c4 8. Bc2 b5 9. a4 b4 10. cxb4 Nxb4 11. b3 {1-0 (11) Weggen,R (1848)-Swartz,H ICCF 2013}) (3. g3 c5 (3... e6 4. Bg2 Ne7 5. c3 Nbc6 6. O-O O-O 7. e4 d5 8. Nbd2 h6 9. Re1 Kh7 10. b4 f5 11. exd5 exd5 12. b5 Na5 13. Ba3 Rf7 14. Ne5 Bxe5 15. Rxe5 {Gallimore,C (2121)-Amelkina,I ICCF 2014 1-0}) 4. c3 (4. d5 d6 (4... Nf6 5. Bg2 b5 6. d6 O-O 7. dxe7 Qxe7 8. Nd4 cxd4 9. Bxa8 d5 10. Qxd4 Na6 11. Bc6 Nb4 12. Qc3 d4 13. Qd2 Nxc6 14. O-O Bh3 15. Re1 Ne5 16. b3 {Giessing,K (1325)-Andersen,L (2005) ICCF 2021 0-1}) 5. c4 b5 6. cxb5 a6 7. e4 Nf6 8. Nc3 O-O 9. bxa6 Nbd7 10. Be2 Qa5 11. O-O Bxa6 12. a4 Rfb8 13. Ra3 Rb4 14. Bb5 Bxb5 15. axb5 Qd8 {Emrich,E (2183)-Trofimov,V (2412) ICCF 2012 1/2-1/2 (40)}) 4... Qa5 5. Bg2 cxd4 6. Nxd4 Nf6 7. O-O O-O 8. Nd2 d5 (8... d6 9. a4 Nbd7 10. N2b3 Qc7 11. a5 a6 12. Qd3 Ne5 13. Qc2 Bd7 14. h3 Nc4 15. e4 Rad8 {Lewis,J (1701) -Titzhoff,F (2233) ICCF 2012 0-1 (37)}) 9. N2b3 Qc7 10. Qd3 e5 11. Nb5 Qc6 12. Na3 Bf5 13. Qb5 a6 14. Qxc6 bxc6 {Guy,D (1549)-Jones,R ICCF 2020 0-1 (36)}) 3... d6 (3... c6 4. c3 (4. Be2 Nh6 (4... d5 5. O-O Nf6 6. Nc3 a6 7. Bd3 Bg4 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4 Bxf3 11. Bxf3 O-O 12. Be3 Nd7 13. Re1 Nb6 14. Be2 Nd5 15. Rb1 Qd6 16. Bf3 {Hardwick,M (1343)-Armstrong,J (1536) ICCF 2017 1/2-1/ 2 (52)}) 5. O-O O-O 6. c4 Kh8 7. Nc3 d6 8. Bd3 Bg4 9. e4 Nd7 10. Be2 Bxf3 11. Bxf3 Ng8 12. Re1 e6 13. Be3 Nb6 14. a3 e5 15. c5 dxc5 {Hardwick,M-Armstrong,J (1661) ICCF 2008 0-1 (72)}) 4... Qa5 5. Nbd2 d6 6. Bd3 Kf8 7. O-O Bd7 8. e4 Be8 9. Nc4 Qc7 10. Bf4 Nd7 11. e5 d5 12. Ne3 e6 13. c4 h6 14. Rc1 Ne7 15. cxd5 { Ross,D (1920)-Ipekyilmaz,E (1532) ICCF 2015 1-0 (68)}) (3... d5 4. b3 Nh6 5. Bb2 c5 6. Bd3 Nc6 7. O-O O-O 8. Nbd2 cxd4 9. Nxd4 e5 10. Nxc6 bxc6 11. h3 Qg5 { 0-1 (11) Ziegler,J-Putra,M ICCF 2017}) (3... b6 4. b3 Bb7 5. Be2 h5 6. h4 a5 7. a4 Nh6 8. Ng5 Bxg2 9. Rg1 Bb7 10. Nd2 Na6 11. Bc4 e6 12. c3 d5 13. Be2 Qd6 14. Ndf3 f6 15. Nh3 {Malone,S-Reid,W (1255) ICCF 2020 0-1 (35)}) (3... c5 4. dxc5 Qa5+ 5. Nfd2 Qxc5 6. Nb3 Qc7 7. Be2 Nc6 8. e4 d6 9. O-O Bd7 10. f3 Rc8 11. Nc3 Bxc3 12. bxc3 Nf6 13. Bh6 Rg8 14. Bg5 Nh5 15. Rb1 {Pleijsier,H (2117)-Mondry,M (2247) ICCF 2018 1/2-1/2 (28)}) (3... f5 4. Nbd2 a6 5. Be2 d6 6. O-O Be6 7. Ng5 Qd7 8. b3 {1-0 (8) MacMillen,A (1861)-Manarin,F (1655) ICCF 2006}) (3... e6 4. Be2 Nf6 5. Nc3 O-O 6. O-O d6 7. Bd3 Nbd7 8. Qe2 e5 9. Bd2 Re8 10. e4 exd4 11. Nxd4 Ne5 12. Bb5 Bd7 13. a4 a6 14. Bxd7 Nexd7 15. Bf4 {Lapham,F-Stephan,C ICCF 2008 0-1 (30)}) 4. Be2 (4. h3 Nd7 (4... c6 5. Be2 e5 6. dxe5 dxe5 7. Qxd8+ Kxd8 8. e4 Be6 9. Bg5+ f6 10. Bd2 Nh6 11. Nc3 Nd7 12. Rd1 Ke7 13. Be3 Nf7 14. O-O Rhd8 15. b3 Bh6 16. Bxh6 {Hardwick,M (1214)-Thau,O (1704) ICCF 2020 0-1 (32)}) (4... e6 5. Bb5+ Nd7 6. Nc3 a6 7. Bd3 b5 8. Ne4 Bb7 9. Neg5 Ne7 10. Be4 d5 11. Bd3 h6 12. Nxf7 Kxf7 13. Ne5+ Nxe5 14. dxe5 Bxe5 15. Qf3+ Kg7 16. O-O { Hardwick,M (1214)-Thau,O (1704) ICCF 2020 0-1 (33)}) 5. Bd3 e5 6. c3 Ngf6 7. Nbd2 O-O 8. O-O Re8 9. Re1 e4 10. Bc2 exf3 11. Qxf3 d5 12. e4 dxe4 13. Nxe4 Nxe4 14. Bxe4 Nf6 15. Bg5 c6 {Cabral,R (1902)-Peixinho,A ICCF 2010 1-0 (38)}) ( 4. b3 c5 5. Bb2 Nc6 (5... Nh6 6. Bb5+ Bd7 7. Bxd7+ Nxd7 8. O-O O-O 9. c4 e6 10. Qc2 Nf5 11. dxc5 Nxc5 12. Bxg7 Kxg7 13. Nc3 Nh4 {Schulz,B (1784)-Günther,R (1710) ICCF 2017 1-0 (48)}) 6. Bb5 (6. c3 cxd4 7. Nxd4 Nxd4 8. cxd4 Nf6 9. Na3 Qa5+ 10. Ke2 Ne4 11. Qd3 d5 12. Nb5 O-O 13. Kf3 Bf5 14. b4 Qb6 15. a4 Ng5+ 16. Ke2 Bxd3+ 17. Kxd3 Ne4 {Miedema,H (1073)-Armstrong,J (1511) ICCF 2017 0-1 (33)} ) 6... Qa5+ 7. Nc3 Bd7 8. Bc4 cxd4 9. exd4 Bg4 10. Bb5 Rc8 11. Qd3 Nf6 12. h3 Bxf3 13. Qxf3 O-O 14. Bxc6 Rxc6 15. O-O-O Rfc8 {Richards,M (1493)-Zoll,D (2275) ICCF 2016 0-1 (25)}) (4. Nbd2 Nd7 5. Bd3 e6 6. c3 Ne7 7. e4 a6 8. O-O b6 9. Re1 Bb7 10. Qe2 h6 11. Nc4 O-O 12. Bf4 g5 13. Bg3 Ng6 14. e5 d5 15. Ne3 c5 { Gionfriddo,M (1816)-Lachiche,D ICCF 2012 0-1 (55)}) (4. Bc4 Nf6 5. Ng5 O-O 6. c3 (6. Bxf7+ Rxf7 7. Nxf7 Kxf7 8. O-O b6 9. Qf3 d5 10. Nc3 Bb7 11. b3 Nbd7 12. e4 dxe4 13. Qe3 Kg8 14. Qh3 Nf8 15. Bg5 Qe8 16. Nb5 Qxb5 17. Qh4 Ne6 {Anderson, L (1052)-Morton,P (1581) ICCF 2017 0-1 (25)}) 6... d5 7. Bb3 c5 8. dxc5 Nbd7 9. Qd4 e5 10. Qb4 Qc7 11. Bc2 Nxc5 12. e4 h6 13. Nf3 dxe4 14. Nfd2 Nd5 15. Qc4 Be6 {Lankinen,T (1475)-Robbiani,S ICCF 2020 0-1 (40)}) (4. Bd3 Bg4 (4... e5 5. O-O Nd7 6. c3 Ngf6 7. e4 O-O 8. Re1 Re8 9. d5 c6 10. c4 cxd5 11. cxd5 Nc5 12. Bc2 a5 13. a4 b6 {Egan,M (2175)-Dubuc,S (2220) ICCF 2019 1/2-1/2 (30)}) 5. Nbd2 Nc6 6. c3 e5 7. O-O Nge7 8. Qb3 Qc8 9. Be2 O-O 10. Ne4 d5 11. Ng3 e4 12. Ne1 Be6 13. Nc2 f5 14. Nb4 a5 15. Nxc6 bxc6 {Liles,C-Kanagenthiran,P ICCF 2015 0-1 (27) }) 4... Nd7 (4... e6 5. e4 Ne7 6. O-O O-O 7. Bg5 Nd7 8. Nc3 b6 9. e5 Bb7 10. exd6 cxd6 11. Be3 a6 12. a4 Qc7 13. Re1 h6 14. Qd2 g5 15. h3 Nf5 16. Bxg5 { Hardwick,M (1261)-Law,K (1205) ICCF 2019 1-0 (28)}) 5. O-O Ngf6 6. Bd2 (6. Bc4 O-O 7. b3 a6 8. a4 e5 9. dxe5 Ng4 10. c3 Ndxe5 11. Nxe5 Nxe5 12. Be2 b6 13. e4 Be6 14. f4 Nc6 15. Bb2 Qd7 16. Nd2 d5 17. exd5 Bxd5 {Enoksson,B (1320) -Robbiani,S ICCF 2020 0-1 (51)}) 6... O-O 7. c4 e5 8. dxe5 dxe5 9. Bc3 Qe7 10. Nbd2 e4 11. Nd4 c5 12. Nc2 Rd8 13. b4 b6 {Flew,B (1623)-Ackley,P (1989) ICCF 2017 0-1}) (2. g3 Bg7 (2... d5 3. Bg2 Bf5 4. Nc3 e6 5. Nf3 Bb4 6. Bd2 Bxc3 7. O-O Bxd2 8. Nxd2 Nf6 9. c4 c6 10. c5 O-O 11. e4 Nxe4 12. Nc4 dxc4 13. f3 Nxg3 14. Qe1 {Anderson,L (761)-Larsson,B ICCF 2020 0-1 (25)}) 3. Bg2 (3. b3 c5 4. Bb2 cxd4 5. b4 Nc6 6. a3 a5 7. b5 Qb6 8. Nf3 Qxb5 9. Qc1 Nf6 10. c4 Qc5 11. Bh3 O-O 12. Qc2 b5 13. Nbd2 bxc4 14. Nxc4 d5 {Byrne,V (1634)-Manger,E (1802) ICCF 2014 0-1}) 3... c5 4. dxc5 (4. c3 cxd4 5. cxd4 Qb6 6. Nf3 d5 7. Nc3 Nf6 8. Ne5 Nc6 9. O-O Qxd4 10. Nd3 Qb6 11. Nxd5 Nxd5 12. Bxd5 O-O 13. Be3 Nd4 14. Rc1 Rd8 15. Bg2 Bf5 {Sosa Landa,H (1637)-Duiven,G (1851) ICCF 2014 0-1}) 4... Na6 5. e4 (5. Nf3 Nxc5 6. O-O (6. Nc3 d6 7. O-O Nf6 8. Ne1 Be6 9. Nd3 Nxd3 10. Qxd3 Qd7 11. Rd1 Rc8 12. a4 O-O 13. Qb5 {Bendig,F (2309)-Leite,D (2412) ICCF 2008 1/2-1/ 2 (32)}) 6... d6 7. Ng5 (7. c4 Bd7 8. Nd4 Nf6 9. Nc3 O-O 10. b3 Rc8 11. Bb2 Qb6 12. Qd2 a5 13. Rfd1 a4 14. Rab1 Qa6 15. b4 Ne6 16. Nd5 Nxd5 17. Bxd5 Nc7 { Doye,P (2317)-Poole,T ICCF 2013 1/2-1/2 (36)}) 7... Nf6 8. Nc3 O-O 9. Bf4 Qc7 10. Nb5 Qb6 11. c4 a6 12. b3 axb5 13. a3 Nh5 14. b4 Bxa1 15. Qxa1 Nxf4 16. gxf4 bxc4 {Anderson,L (761)-Robbiani,S ICCF 2020 0-1 (31)}) 5... Nxc5 6. Ne2 b6 7. Nbc3 Bb7 8. Be3 f5 9. Bxc5 bxc5 10. O-O fxe4 11. Bxe4 Rb8 12. Bxb7 Rxb7 13. b3 Nh6 {Sýkora,J (2367)-Szymanski,R (2385) ICCF 2013 0-1 (49)}) (2. e3 Bg7 3. Bd3 (3. Nd2 Nf6 (3... d6 4. c3 a6 5. h3 Nd7 6. Bd3 b5 7. Be4 Rb8 8. Ngf3 Ngf6 9. O-O Bb7 10. Bxb7 Rxb7 11. Re1 O-O 12. e4 c5 13. e5 dxe5 14. dxe5 Nd5 15. e6 { Strelecky,R-Klimushyn,C ICCF 2014 1-0 (40)}) 4. Bc4 O-O 5. f4 d5 6. Ngf3 dxc4 7. Nxc4 Ne4 8. O-O b5 9. Na3 b4 10. Nc4 Ba6 11. b3 Nc6 12. Re1 Bb5 13. Qd3 Nc5 14. Bb2 Nxd3 {Leber,D-Kraut,M ICCF 2009 0-1}) 3... d6 (3... b6 4. f3 Bb7 5. Ne2 e6 6. Nbc3 Ne7 7. Bd2 d6 8. f4 O-O 9. Be4 Bxe4 10. Nxe4 Nd7 11. N2g3 d5 12. Ng5 h6 13. c3 hxg5 14. fxg5 c5 15. h4 {Malori,M (1543)-Secondi,A (1385) ICCF 2018 0-1 (43)}) (3... c5 4. c3 d6 5. f4 Nf6 6. Nf3 cxd4 7. exd4 O-O 8. O-O Bf5 9. Bxf5 gxf5 10. Nbd2 Nbd7 11. Ng5 d5 12. Ndf3 Ne4 13. Nxe4 fxe4 14. Ne5 f5 15. Qb3 {Ong,A-Sosa Landa,H ICCF 2011 1-0}) (3... d5 4. f4 f5 5. Ne2 Nf6 6. O-O O-O 7. Rf3 Nc6 8. Rh3 Ne4 9. Bxe4 fxe4 10. Rg3 Bf6 11. Nbc3 Bh4 12. Rf3 b6 13. Rf1 Bf6 14. b3 Ba6 15. Ba3 {White,R (1554)-Richardson,D (1688) ICCF 2016 0-1 (59)}) (3... e6 4. c3 Nf6 5. Nd2 O-O 6. f4 d6 7. Ngf3 d5 8. Ne5 Nbd7 9. O-O Nxe5 10. fxe5 Nd7 11. e4 b6 12. exd5 exd5 13. Nf3 Kh8 14. Bg5 f6 15. exf6 {Petrie,A (1540)-Armstrong,J (1599) ICCF 2015 0-1 (39)}) 4. Nd2 (4. c3 e6 5. Nf3 Nd7 6. O-O Ne7 7. e4 b6 8. Bg5 Bb7 9. Qd2 h5 10. Qe3 c6 11. Bh6 Bxh6 12. Ng5 f6 13. Nxe6 Bxe3 14. Nxd8 Bxf2+ 15. Rxf2 Rxd8 {Drury,P (1437)-Law,K (1178) ICCF 2020 1/2-1/2 (43)}) 4... Nd7 5. f4 e6 6. Ngf3 Ne7 7. c3 b6 8. O-O Bb7 9. Be4 d5 10. Bc2 h6 11. Ne5 Nxe5 12. fxe5 O-O 13. Nf3 Qd7 {Drury,P (1461)-Law,K (1205) ICCF 2019 0-1 (36)}) (2. Nc3 Bg7 3. Bf4 (3. Be3 e6 4. g3 Ne7 5. Bh3 Nbc6 6. Nf3 b6 7. Qd3 Bb7 8. O-O-O Nb4 9. Qb5 Nbd5 10. Bg5 Nxc3 11. bxc3 a5 12. Ne5 f6 13. Bxe6 fxe5 14. dxe5 c6 {Haws,A (1454)-Giessing,K (1441) ICCF 2018 1-0}) 3... c5 (3... Nf6 4. e4 d5 5. Nb5 Na6 6. e5 Nd7 7. Nf3 O-O 8. Qd2 f6 9. Nc3 g5 10. Be3 {1-0 (10) Nurmi,R (1946)-Sheward,A (1956) ICCF 2018}) 4. e3 Nf6 5. Qd3 cxd4 6. Qxd4 Nh5 7. Be5 Nc6 8. Qh4 Bxe5 9. O-O-O Bxc3 10. bxc3 Qa5 11. Bc4 Qxc3 12. Ne2 Qa1+ 13. Kd2 Qf6 {Fabbiani,T-Robbiani,S ICCF 2020 0-1 (45)}) (2. Bg5 Bg7 (2... Bh6 3. Bh4 f5 4. e3 c6 5. c3 d6 6. Bc4 d5 7. Bd3 Nd7 8. f4 b5 9. a3 a5 10. Nf3 a4 11. Nbd2 Ngf6 12. Qe2 Ng4 13. h3 Ngf6 14. g4 {Anderson,J (1723)-Armstrong,J (1599) ICCF 2015 1-0 (37)}) 3. Nc3 (3. c3 h6 4. Bh4 Nf6 (4... d5 5. e3 Nf6 6. Nf3 O-O 7. Nbd2 b6 8. Be2 c5 9. h3 Bb7 10. O-O Nbd7 11. a4 Re8 12. a5 e5 13. Bb5 exd4 14. a6 Bc8 15. exd4 Re6 16. c4 {Neelmeier,S (1721)-Bedbur,H (1879) ICCF 2016 0-1}) 5. Nd2 d5 6. e3 Nc6 7. Ngf3 Bf5 8. h3 O-O 9. g4 Be6 10. Bd3 a5 11. a4 Ne8 12. Kf1 Nd6 13. Kg2 g5 14. Bg3 f5 {Ormsby,A (2007)-Vieth,M (1915) ICCF 2010 1/2-1/2 (28)}) (3. Qd2 Nc6 4. Nf3 h6 5. Bh4 d6 6. c3 g5 7. Bg3 g4 8. Nh4 Nf6 9. Qc2 a6 10. Nf5 Bxf5 11. Qxf5 e6 12. Qc2 Nh5 13. Qd3 d5 14. e3 Nf6 { Reyes Cortés,R (1657)-Santamaría Quintana,I (1133) ICCF 2019 1-0 (41)}) (3. e3 h6 4. Bh4 Nf6 5. Bd3 (5. Bxf6 Bxf6 6. g3 d5 7. Bg2 O-O 8. Ne2 c6 9. O-O e5 10. dxe5 Bxe5 11. c3 Qb6 12. Qc2 Bf5 13. Qd2 Nd7 14. Na3 Rad8 15. Nd4 Bxd4 16. exd4 Nf6 {Reyes Cortés,R (1590)-Carrillo Carrillo,M (1777) ICCF 2020 0-1 (31)}) 5... d6 6. Nd2 O-O 7. c3 e5 8. Qc2 Nc6 9. Ne2 a6 10. d5 Ne7 11. e4 c6 12. dxc6 bxc6 13. O-O g5 14. Bg3 Nh5 {Mozelius,P-Malinin,S ICCF 2004 1-0 (33)}) (3. e4 c5 4. Nf3 cxd4 5. Nxd4 Qb6 6. Be3 Qxb2 7. Nd2 Bxd4 8. Rb1 Qc3 9. Rb3 Qc5 10. Rb5 Bxe3 11. Rxc5 Bxc5 12. Qa1 Nf6 13. e5 Ng4 14. Ne4 Bb4+ {Sánchez Villacanas,J (1529) -Kaupat,T ICCF 2009 1/2-1/2 (31)}) 3... h6 4. Bh4 d5 5. e3 Nf6 6. h3 O-O 7. Bd3 a6 8. Nge2 b5 9. b4 a5 10. bxa5 c6 11. Bg3 Qxa5 12. O-O b4 13. Nb1 c5 {Reyes Cortés,R (1614)-Carrillo Carrillo,M (1749) ICCF 2019 0-1 (33)}) (2. h4 Nf6 ( 2... Bg7 3. h5 d5 4. h6 Bf6 5. Nc3 Nc6 6. e3 e5 7. dxe5 Nxe5 8. Qxd5 Qxd5 9. Nxd5 Kd8 10. Nxf6 Nxf6 11. b3 Re8 12. Bb2 Bd7 13. O-O-O Kc8 14. f3 {Alberts,J (1809)-Dahlstrom,B (1549) ICCF 2009 1-0}) 3. f3 (3. h5 Nxh5 4. Rxh5 gxh5 5. e4 c5 6. Qxh5 cxd4 7. Nf3 Qb6 8. Na3 Qg6 9. Qh4 a6 10. Nc4 Nc6 11. Bd2 d6 12. a3 Be6 13. Nb6 Rb8 14. Nd5 Bg7 {Alberts,J (1809)-Wiese,D ICCF 2009 0-1 (39)}) 3... d5 4. Nc3 Bg7 5. Bf4 Nh5 6. Qd2 Nxf4 7. Qxf4 Nc6 8. O-O-O e5 9. dxe5 Bxe5 10. Qd2 d4 11. Ne4 Be6 12. e3 dxe3 13. Qe1 Qe7 {Nixon,R (1754)-Ormsby,A (2074) ICCF 2012 0-1 (29)}) (2. d5 d6 3. e4 e5 4. Be2 Bg7 5. c4 c5 6. Nf3 Ne7 7. O-O O-O 8. a3 Nd7 9. b4 b6 10. b5 a5 11. a4 Nf6 12. Nbd2 Nh5 13. Nh4 Nf4 {Gosling, D (1501)-Kraut,M (1530) ICCF 2015 0-1 (48)}) (2. Nh3 Bg7 3. c3 d6 4. g3 a6 5. Bg2 c6 6. e4 Nd7 7. O-O e6 8. Be3 h6 9. Nd2 Ne7 10. Nc4 Qc7 11. Bf4 e5 12. dxe5 dxe5 13. Nd6+ Kf8 {Green,M (1992)-Woodard,B ICCF 2013 1-0}) 2... Bg7 (2... c5 3. d5 b5 (3... f5 4. h4 d6 5. h5 Bg7 6. Nc3 Bxc3+ 7. bxc3 Qa5 8. Qc2 (8. Bd2 gxh5 9. Nh3 Nf6 10. Nf4 Nbd7 11. e3 Ne5 12. Nxh5 Nxh5 13. Qxh5+ Kd8 14. Qg5 Bd7 15. Be2 Qa4 16. Qg7 {1/2-1/2 (16) Goldenberg,I-De la Fuente Gonzalez,F (2127) ICCF 2006}) (8. Qb3 gxh5 9. Nh3 Nd7 10. Nf4 Ne5 11. Nxh5 Bd7 12. Ng7+ Kf7 13. Nh5 Ba4 14. Qb1 Bd7 15. Qc2 Qa4 16. Qxa4 Bxa4 17. f3 Nf6 18. Bf4 Nxc4 19. e4 Ne5 {Vassia,E (2610)-Burghoff,A (2609) ICCF 2012 1/2-1/2 (40)}) 8... gxh5 9. Nh3 (9. Bg5 Nd7 10. e3 Ngf6 11. f3 Rg8 12. Nh3 b5 13. Bxf6 Nxf6 14. Nf4 b4 15. Kf2 bxc3 16. Bd3 Rb8 17. Rhb1 Rb6 18. Rxb6 axb6 19. Rb1 Bd7 {Anton,V (2610) -Goldenberg,R (2590) ICCF 1989 1/2-1/2 (27)}) (9. Nf3 Nd7 10. Rxh5 Nb6 11. Rh4 Qa4 12. Qb3 Nf6 13. Ng5 h5 14. f3 Qxb3 15. axb3 a5 16. Ne6 Kf7 17. Nc7 Ra7 18. b4 Nbd7 19. Rxa5 Rxa5 20. bxa5 Ne5 {Ferre Pérez,A (2185)-Yunusov,A (2452) ICCF 2018 1/2-1/2 (30)}) 9... Nd7 10. Nf4 Ngf6 11. Rb1 Nb6 12. e3 Bd7 13. Nxh5 Nxh5 14. Rxh5 Kd8 15. Bd3 {Horodyskyi,O-Klajnscak,B (1922) ICCF 2019 1/2-1/2 (33)} ( 15. Rb3 Ba4 16. Ra3 Bxc2 17. Rxa5 a6 18. Ra3 Kc7 19. Kd2 Ba4 20. Rxf5 Raf8 { Lau,W (2181)-Moza,M (2210) ICCF 2011 1/2-1/2 (33)})) 4. cxb5 (4. e3 d6 5. cxb5 Bg7 6. Nc3 Nf6 7. Bc4 O-O 8. Nge2 Nbd7 9. f4 Nb6 10. Qb3 a6 11. e4 Nxc4 12. Qxc4 Qa5 13. Ng3 Ne8 14. Nge2 f5 15. Bd2 axb5 {Cox,R (1760)-Pardoe,I (1648) ICCF 2018 1-0}) 4... f5 (4... a6 5. e4 axb5 6. Bxb5 Bg7 7. Ne2 Nf6 8. Nec3 O-O 9. O-O d6 10. a4 Na6 11. Na3 Nb4 12. Bg5 h6 13. Bd2 e6 14. Nc4 exd5 15. Nxd5 Nfxd5 16. exd5 {Reede,A (1993)-Mergard,H (2022) ICCF 2011 1/2-1/2 (43)}) 5. Nc3 Nf6 6. Qb3 Bg7 7. Nf3 O-O 8. g3 a6 9. b6 Bb7 10. Bg2 a5 11. Ng5 c4 12. Qb5 h6 13. Nf3 Ra6 14. Qxc4 {Nozicka,V (2108)-Whittaker,I (2117) ICCF 2020 0-1 (58)}) (2... e6 3. e4 (3. Nf3 Bh6 4. Nc3 a6 5. e4 Qf6 6. e5 Qg7 7. Bd3 Ne7 8. O-O O-O 9. Ne4 d6 10. Nf6+ Kh8 11. Ng5 Bxg5 12. Bxg5 Nf5 13. Qd2 h6 14. Bxf5 gxf5 { Sawyer,T-Kruse,P ICCF 2019 1-0}) 3... b6 (3... d5 4. exd5 exd5 5. Nc3 c6 6. Nf3 Bg7 7. cxd5 Ne7 8. Bg5 O-O 9. Bc4 h6 10. Bh4 cxd5 11. Bxe7 Qxe7+ 12. Be2 Nc6 13. O-O Qd6 14. h3 a6 15. Re1 {Bennewitz,B (1977)-Ruiz Bernal,I (1988) ICCF 2009 0-1 (43)}) (3... Bg7 4. f4 d5 5. e5 Ne7 6. Nf3 O-O 7. Nc3 c6 8. Be3 Bd7 9. Rc1 Nf5 10. Bf2 Na6 11. a3 Rb8 12. c5 Nc7 13. b4 a6 14. Bd3 b5 15. O-O { Perkins,K (2302)-Acosta,E (1563) ICCF 2021 1/2-1/2 (39)}) 4. Nf3 Nc6 5. d5 Na5 6. Qd4 Bb4+ 7. Nc3 f6 8. Be2 Ba6 9. b3 e5 10. Qd2 Ne7 11. Qc2 c6 12. dxc6 Nexc6 13. O-O O-O 14. Nd5 {Gallo,C (1970)-Hoogkamer,M ICCF 2014 1-0 (48)}) (2... Nc6 3. d5 Ne5 4. e4 d6 5. Bf4 Bg7 6. Nc3 c6 7. Bxe5 Bxe5 8. Nf3 Bg4 9. Be2 { 1-0 (9) Omahna,G-Pestotnik,R ICCF 2013}) (2... e5 3. dxe5 Nc6 4. Nf3 Bg7 5. Bg5 f6 6. exf6 Nxf6 7. Nc3 O-O 8. Nd5 d6 9. e3 Be6 10. Be2 Qd7 11. Nxf6+ Bxf6 12. Bxf6 Rxf6 13. O-O Rd8 14. Qc2 {Underwood,W (1784)-Alberts,J ICCF 2008 1-0 (55)} ) (2... b5 3. cxb5 a6 4. e4 axb5 5. Bxb5 Nf6 6. Nc3 c6 7. Bd3 d6 8. Nf3 Bg7 9. h3 O-O 10. Be3 Qb6 11. Qd2 Ba6 12. Rb1 Nbd7 13. O-O d5 14. Bxa6 {Vetter,G (2326)-Green,M (1992) ICCF 2013 1-0 (48)}) (2... f6 3. Nc3 Bg7 (3... Nh6 4. Nf3 d6 5. e3 Nf7 6. Be2 Bg7 7. O-O O-O 8. Bd2 e5 9. Re1 Nc6 10. h3 Kh8 11. a3 Bd7 12. b4 exd4 13. exd4 a6 14. Bf1 Ng5 15. b5 {Martínez Molina,J-Akrill,R ICCF 2014 0-1 (35)}) 4. e4 d6 5. Nf3 Nh6 6. Be2 Nf7 7. Be3 c6 8. O-O Nd7 9. b4 O-O 10. Qb3 b6 11. Rfd1 a5 12. a3 e6 13. d5 exd5 14. Nd4 {Wingo,M (2051)-Green,M (2012) ICCF 2015 0-1}) (2... h6 3. e4 Bg7 4. Nf3 d6 (4... a6 5. Nc3 c6 6. Be2 d6 7. Qc2 e6 8. Be3 Ne7 9. O-O Rg8 10. Rfd1 g5 11. d5 Ng6 12. c5 g4 13. Ne1 h5 14. Na4 Nd7 15. dxe6 {Bryg,S (2118)-Ipekyilmaz,E (1532) ICCF 2015 1-0 (47)}) 5. Nc3 c6 6. Bd3 Bg4 7. Be3 Nd7 8. h3 Bxf3 9. Qxf3 Qb6 10. O-O Qxb2 11. Rfc1 Qb6 12. Rab1 Qc7 13. c5 dxc5 14. Bc4 {Malisevschi,C (1988)-Green,M (1998) ICCF 2014 1-0 (62)}) 3. Nf3 (3. Nc3 c5 (3... e6 4. e4 (4. Nf3 Ne7 (4... b6 5. e3 (5. Bf4 d6 6. e4 Bb7 7. c5 dxc5 8. Qa4+ Nd7 9. dxc5 bxc5 10. Ne5 Bxe5 11. Bxe5 f6 12. Bf4 e5 13. Be3 c6 14. Qb3 Qb6 15. Qe6+ Ne7 16. O-O-O Bc8 {Cumming,D (2288) -Armstrong,J (1643) ICCF 2011 1-0 (29)}) (5. e4 Bb7 6. Bf4 Ne7 7. Nb5 d6 8. c5 bxc5 9. dxc5 Bxb2 10. cxd6 Bxa1 11. Nxc7+ Kd7 12. dxe7+ Kxe7 13. Qxa1 Nd7 14. Qc3 h6 15. Qb4+ Kf6 16. Qd4+ Ke7 {Mões Joaquim,C (1879)-Graça,J (1524) ICCF 2012 1-0}) 5... Bb7 6. Be2 d6 7. O-O Nd7 8. b3 c6 9. Ba3 Qc7 10. Rc1 O-O-O 11. Ng5 Ndf6 12. Bf3 h6 13. Nge4 Bf8 14. b4 Nxe4 15. Nxe4 f5 16. Nc3 {Analiev,D (1556)-Kaytazki,L (1525) ICCF 2020 0-1 (40)}) (4... d5 5. Bf4 Nf6 6. Rc1 a6 7. e3 O-O 8. Qb3 c6 9. Be2 Nh5 10. Be5 Bxe5 11. Nxe5 f6 12. Nd3 Ng7 13. h4 dxc4 14. Qxc4 Nd7 15. h5 Nb6 16. Qb3 {Shaw,J (2236)-Keene,J (1758) ICCF 2021 1-0}) 5. Bf4 (5. h4 h6 6. Bf4 (6. e4 d5 7. e5 c6 8. Qc2 Nf5 9. g4 Ne7 10. Be3 h5 11. gxh5 Rxh5 12. O-O-O {1-0 (12) Szabo,A (2398)-Donosa,M ICCF 2010}) 6... d6 7. e4 a6 8. Qd2 Nd7 9. O-O-O b6 10. Kb1 Bb7 11. Bd3 Nc6 12. Be3 Qe7 13. Be2 O-O-O 14. h5 g5 15. d5 Nce5 16. Nd4 c5 {Voveris,G (2270)-Lanzani,P (2171) ICCF 2015 1/ 2-1/2 (58)}) (5. Bg5 d6 6. e3 Nd7 7. Bd3 f6 8. Bf4 b6 9. Be4 Rb8 10. Nb5 Bb7 11. Bxb7 e5 12. dxe5 fxe5 13. Bg5 Rxb7 14. Qa4 h6 15. Bxe7 Qxe7 16. Nxa7 O-O { Martínez Muñoz,J (1508)-Giessing,K (1459) ICCF 2017 1-0 (36)}) 5... d6 (5... d5 6. e3 O-O 7. Rc1 c6 8. Bd3 b6 9. O-O Nd7 10. cxd5 exd5 11. Bd6 Nf6 12. Ba3 Re8 13. Ne5 a6 14. Bxe7 Qxe7 15. Nxc6 Qd6 16. Ne5 h5 17. Qb3 {Knee,J (1765)-Brooks, I (1617) ICCF 2020 1-0 (50)}) 6. Qd2 Nd7 7. Bh6 O-O 8. Bxg7 Kxg7 9. e4 b6 10. g4 Bb7 11. Bg2 Rb8 12. h4 d5 13. h5 Rh8 14. cxd5 exd5 15. e5 Kf8 {Haug,K (2133) -Giessing,K ICCF 2011 1-0 (33)}) (4. g3 Ne7 5. Bg2 O-O 6. Nf3 d5 7. O-O Nbc6 8. Re1 a6 9. cxd5 exd5 10. Bf4 Bg4 11. e3 Qd7 12. Qb3 b5 13. Rac1 b4 14. Ne2 Rab8 15. Qd3 a5 {Sanchez,D-Fullen,P ICCF 2018 1/2-1/2 (32)}) (4. h4 h5 5. e4 Ne7 6. Nf3 d6 7. Be3 (7. Bg5 Nd7 8. Qd2 f6 9. Be3 f5 10. Bd3 Rf8 11. O-O-O fxe4 12. Nxe4 Nf5 13. Rhe1 d5 14. cxd5 exd5 15. Bg5 Bf6 16. Nd6# {1-0 (16) Kamenskikh,A (1950)-Giessing,K (1385) ICCF 2019}) 7... a6 8. Qd2 Nd7 9. Bd3 b6 10. Rc1 Bb7 11. O-O f5 12. Rfe1 Nf6 13. Ng5 Qd7 14. exf5 exf5 15. d5 O-O {Bas Fortuny,M (1831)-Giessing,K (1432) ICCF 2018 1-0}) 4... Ne7 (4... b6 5. g3 (5. f3 d6 6. Be3 Ne7 7. Qd2 Bb7 8. Nge2 a6 9. h4 h5 10. g4 Nd7 11. Rg1 hxg4 12. fxg4 Nc6 13. g5 Qe7 14. O-O-O O-O-O 15. Qe1 f5 16. Nf4 {Sanchez,D-Algeri,B ICCF 2019 1-0}) ( 5. Be3 Ne7 6. Bd3 O-O 7. Nge2 h6 8. Qd2 Kh7 9. O-O Nbc6 10. Rae1 Bb7 11. a3 Ng8 12. b3 d6 13. d5 Ne5 14. Qc2 Nxd3 15. Qxd3 Nf6 16. f3 e5 {Pardoe,I (1648) -Kammen,A ICCF 2018 1-0 (31)}) 5... Bb7 (5... Ne7 6. h4 Bb7 7. Nge2 O-O 8. h5 d6 9. hxg6 fxg6 10. Nf4 Qd7 11. Bh3 c6 12. Bxe6+ Qxe6 13. Nxe6 Rf7 14. Nd8 Nd7 15. Nxf7 Kxf7 16. Qf3+ Kg8 {Bertaggia,A-Secondi,A (1385) ICCF 2018 1-0}) 6. Bg2 d6 7. Nge2 Nd7 8. O-O Ne7 9. Be3 O-O 10. Qd2 e5 11. d5 Nf6 12. Bh3 Bc8 13. Bxc8 Qxc8 14. f3 Qd7 15. Bg5 Ne8 16. Bxe7 {Eeckhout,J (1860)-Humbert,P ICCF 2008 1-0 (40)}) (4... Nc6 5. Nf3 Nge7 (5... d6 6. Be2 Nge7 7. O-O b6 8. d5 exd5 9. cxd5 Ne5 10. Nxe5 Bxe5 11. Bh6 Ng8 12. Be3 Bg7 13. f4 a6 14. Bd4 f6 15. Rc1 Nh6 16. Bd3 O-O 17. Ne2 {Podvoysky,E (2349)-Trofimov,V (2413) ICCF 2012 1-0 (50)}) 6. Bf4 (6. d5 Ne5 7. Nxe5 Bxe5 8. Bg5 f6 9. Bh6 c6 10. d6 Bxc3+ 11. bxc3 Qa5 12. Qd4 e5 13. Qd2 g5 14. dxe7 Kxe7 15. Rd1 Kf7 16. Be2 {Hoffman,D-Mirza,L ICCF 2015 1-0}) 6... O-O 7. Be2 b6 8. O-O Bb7 9. a3 Rc8 10. Rb1 Qe8 11. Re1 Nd8 12. d5 d6 13. Bg5 e5 14. b4 a6 15. b5 a5 16. Qd2 {Verslype,S (1692)-Armstrong, J (1588) ICCF 2014 1-0 (90)}) (4... d5 5. cxd5 (5. Nf3 dxe4 6. Nxe4 Nf6 7. Bg5 Qe7 8. Bd3 Qb4+ 9. Bd2 Qe7 10. O-O Nxe4 11. Bxe4 O-O 12. Qb3 c5 13. Rfe1 Nd7 14. Rad1 Re8 15. Bc3 cxd4 16. Bb4 Nc5 {Muljadi,P (2406)-Taffijn,M (2119) ICCF 2020 1-0 (26)}) 5... exd5 6. Nxd5 c6 7. Ne3 Qxd4 8. Qxd4 Bxd4 9. Nf3 Bc5 10. Bc4 Nd7 11. O-O Ngf6 12. e5 Nh5 13. a4 a5 14. Bb3 Nf4 15. Nc4 Ne2+ 16. Kh1 { Andersen,L (2112)-Jarecki,M (2140) ICCF 2018 1/2-1/2 (39)}) (4... c5 5. Nf3 cxd4 6. Nxd4 Nf6 7. e5 Ng8 8. Nf3 Nc6 9. Nb5 Nge7 10. Nd6+ Kf8 11. Bf4 Nf5 12. Nxf5 gxf5 13. Qd2 Qa5 14. Qxa5 Nxa5 15. Be2 Nc6 16. Rd1 {Bredenhof,B (2123) -Jarecki,M (2136) ICCF 2018 1/2-1/2 (29)}) 5. Nf3 (5. Bf4 d6 6. Nf3 O-O (6... Nd7 7. Be2 b6 8. Qc2 Bb7 9. Rd1 h6 10. h3 g5 11. Bc1 f5 12. O-O g4 13. Nh4 gxh3 14. exf5 hxg2 15. Bh5+ Kf8 16. Rfe1 Nf6 17. Rxe6 Nxh5 18. Qe2 {Plyusnin,A (1904)-Giessing,K (1336) ICCF 2020 1-0}) (6... b6 7. Be2 Bb7 8. O-O O-O 9. Rc1 Nd7 10. Qc2 Nc6 11. Bg5 Qc8 12. d5 Nb4 13. Qb1 a5 14. a3 Na6 15. Nb5 a4 16. Be7 Re8 17. Bxd6 cxd6 18. Nxd6 {Vinken,S (1748)-Manger,E (1869) ICCF 2019 0-1 (31)} ) 7. e5 (7. Qd2 Nbc6 8. Bh6 e5 9. Bxg7 Kxg7 10. dxe5 dxe5 11. Qxd8 Rxd8 12. Nd5 Nxd5 13. cxd5 Nb4 14. Rc1 f6 15. a3 Na6 16. Bxa6 bxa6 17. Rxc7+ Rd7 18. Rc5 Rb7 {Mões Joaquim,C (1790)-Barros,L ICCF 2011 1-0 (34)}) 7... dxe5 8. dxe5 Qxd1+ 9. Rxd1 Na6 10. Be2 Nc5 11. b4 Nd7 12. c5 Nc6 13. Nb5 Nxb4 14. Nxc7 Rb8 15. Nb5 a6 16. Nd6 Nxc5 {Gilbert,R (1760)-Armstrong,J (1484) ICCF 2018 1-0 (58)}) (5. Nge2 b6 6. Ng3 Bb7 7. Be2 d6 8. Bg5 Nd7 9. Qd2 h5 10. h4 f6 11. Be3 f5 12. Bg5 fxe4 13. Ngxe4 O-O 14. Bh6 Nf5 15. Bxg7 Kxg7 16. Ng5 Qf6 {Lucena Cifré,R (1547) -Giessing,K (1459) ICCF 2017 1-0 (43)}) (5. Bg5 b6 6. g3 Bb7 7. Bg2 O-O 8. Nf3 Qe8 9. O-O Nec6 10. Re1 f6 11. Be3 Rf7 12. d5 exd5 13. exd5 Ne5 14. Nxe5 fxe5 15. Ne4 Na6 16. a3 d6 {Gilbert,R (1760)-Armstrong,J (1484) ICCF 2018 1-0 (46)}) (5. h4 Nbc6 (5... d5 6. e5 c5 7. dxc5 Nbc6 8. f4 h5 9. Nf3 O-O 10. Be3 f6 11. Qd2 fxe5 12. fxe5 Nxe5 13. Nxe5 Bxe5 14. O-O-O Nf5 15. Bf4 Bd4 16. g4 hxg4 { Tomasa,I (2048)-Schelberg,M (1784) ICCF 2019 1-0}) 6. d5 Bxc3+ 7. bxc3 exd5 8. cxd5 Nb8 9. h5 d6 10. Bg5 O-O 11. hxg6 fxg6 12. Be2 c6 13. dxc6 Nbxc6 14. Bc4+ Be6 15. Bxe6+ Kg7 16. Rxh7+ Kxh7 {Schulenberg,H (2204)-Vaessen,J (1815) ICCF 2016 1-0}) (5. g3 d5 6. Nge2 dxe4 7. Nxe4 Nbc6 8. Bg2 h6 9. O-O O-O 10. Bf4 Nf5 11. d5 exd5 12. cxd5 Nb4 13. N2c3 c6 14. dxc6 bxc6 15. Nd6 g5 16. a3 Nd3 { Hollands,G (1958)-Recasens Sánchez,J (1956) ICCF 2019 1/2-1/2}) 5... O-O (5... d6 6. Be2 (6. h4 Nd7 (6... b6 7. h5 Bb7 8. Be3 f5 9. Ng5 Qd7 10. d5 e5 11. Ne6 Bf6 12. hxg6 hxg6 13. Rxh8+ Bxh8 14. Qf3 Na6 15. Qh3 Bf6 16. Bg5 Nxd5 17. Nxd5 Qxe6 {Gool,J (2031)-Barros,L ICCF 2011 1-0 (28)}) 7. h5 h6 8. hxg6 fxg6 9. Be2 b6 10. Qa4 Bb7 11. Be3 c5 12. Nb5 Qb8 13. dxc5 dxc5 14. O-O-O Bc6 15. Qc2 Bxb5 16. cxb5 Qb7 17. Nd2 O-O-O {Lauer,R-Giessing,K (1564) ICCF 2012 1-0 (27)}) (6. Bg5 h6 7. Be3 Nd7 8. Qd2 b6 9. O-O-O Bb7 10. Bd3 a6 11. Rhe1 Nc6 12. h4 Nb4 13. Bb1 Nc6 14. d5 Nce5 15. Nxe5 Nxe5 16. Qe2 Qxh4 17. f4 {Masset,J (2022) -Galatola,A ICCF 2020 1-0}) 6... O-O 7. Bg5 b6 8. O-O Bb7 9. Qd2 Nd7 10. Rac1 c5 11. d5 e5 12. h3 h6 13. Bxh6 Nf6 14. Bg5 Nh7 15. Be3 Qd7 16. Nh2 Ba6 17. b3 {Paulus,K (1531)-Secondi,A (1385) ICCF 2018 0-1 (49)}) (5... b6 6. Be3 (6. Be2 Bb7 7. O-O O-O 8. Bg5 (8. Bf4 d5 9. cxd5 exd5 10. e5 c6 11. Ng5 h6 12. Nf3 Na6 13. Qd2 Kh7 14. Rac1 Nc7 15. Rfe1 Bc8 16. h4 Bg4 17. Be3 Qd7 18. Nh2 Bxe2 19. Nxe2 Ne6 {Yunusov,A (2452)-Jarecki,M (2136) ICCF 2018 1-0 (61)}) (8. Be3 d5 9. cxd5 exd5 10. e5 Nd7 11. b4 Rc8 12. Rb1 f5 13. Ng5 Qe8 14. Ne6 Rf7 15. Qd2 Nc6 16. Nxg7 Kxg7 {Gould,I (2012)-Amelkina,I ICCF 2014 1-0 (27)}) 8... Nbc6 9. Rc1 h6 10. Bh4 g5 11. Bg3 f5 12. exf5 Nxf5 13. d5 Ncd4 14. Nxd4 Bxd4 15. Bf3 c5 16. dxe6 Nxg3 17. hxg3 Bxf3 {Vinken,S (1770)-Manger,E (1843) ICCF 2017 0-1 (34)}) ( 6. h4 Bb7 (6... h6 7. Bd3 Bb7 8. Be3 f5 9. exf5 Nxf5 10. g4 Ne7 11. Qe2 Nbc6 12. O-O-O O-O 13. Rh3 Nb4 14. Bb1 Bxf3 15. Rxf3 {1-0 (15) Green,P (2122) -Battaglia,H (1930) ICCF 2017}) 7. h5 c6 8. h6 Bf8 9. Bg5 b5 10. Bf6 Rg8 11. Ng5 b4 12. Nxh7 Bxh6 13. Na4 Bf8 14. Nc5 Qc8 15. Be5 Bg7 16. Bxg7 Rxg7 17. Nf6+ Kd8 {Copsey,A (2039)-Armstrong,A (1872) ICCF 2017 1-0}) 6... Bb7 (6... O-O 7. Bd3 Bb7 8. O-O d6 9. Qd2 c5 10. d5 Bxc3 11. Qxc3 e5 12. Bh6 Re8 13. Ng5 Nd7 14. f4 Ba6 15. fxe5 Nxe5 16. Rxf7 {1-0 (16) Mason,I (2250)-Andrianov,A ICCF 2012}) 7. Be2 d5 (7... d6 8. Qd2 h6 9. d5 e5 10. Nh4 Nd7 11. O-O g5 12. Nf5 Nxf5 13. exf5 a5 14. b3 Nf6 15. Rad1 Qe7 16. Rfe1 O-O 17. h4 Nh7 18. hxg5 Nxg5 19. Bd3 { Becker,M-Somogyi,J (2326) ICCF 2006 1/2-1/2 (43)}) 8. cxd5 exd5 9. e5 Nbc6 10. O-O Qd7 11. Nh4 h5 12. f4 Nf5 13. Nxf5 Qxf5 14. Bd3 Qe6 15. f5 gxf5 16. Bxf5 Qe7 17. Nxd5 {Król,P (1660)-Giessing,K (1450) ICCF 2017 1-0}) (5... d5 6. e5 ( 6. Bd3 dxe4 (6... Nbc6 7. Be3 O-O 8. e5 Nb4 9. Be2 dxc4 10. Bxc4 b6 11. O-O Bb7 12. Bg5 h6 13. Bxe7 Qxe7 14. a3 Nc6 15. Bd3 Rfd8 16. Be4 Rab8 17. Qa4 b5 18. Nxb5 {Lahdenmäki,L (2034)-Späh,J ICCF 2017 1/2-1/2 (44)}) 7. Bxe4 O-O 8. O-O c5 (8... Nd7 9. Bf4 a6 10. Qe2 Nf6 11. Rfe1 Nxe4 12. Qxe4 f6 13. h3 Rb8 14. b3 b6 15. Rad1 Re8 16. Qe2 Bd7 17. Qd3 Qc8 18. Bh2 Qb7 19. d5 e5 20. g4 {Smith,M (2119)-Hämmerle,D (2091) ICCF 2019 1-0 (34)}) 9. dxc5 f5 10. Bc2 Qxd1 11. Rxd1 Nec6 12. Nb5 Nb4 {0-1 (12) Marku,G (2020)-Paxton,W ICCF 2020}) 6... Nbc6 (6... c5 7. dxc5 O-O 8. Bf4 Nd7 9. Be2 Nxc5 10. O-O dxc4 11. Bxc4 a6 12. a4 b6 13. b4 Nd7 14. Re1 Bb7 15. Ne4 Bd5 16. Rc1 Rc8 17. Nd6 Rc7 18. Qe2 {Hassell,G (2041) -Recasens Sánchez,J (1956) ICCF 2019 1/2-1/2 (53)}) (6... O-O 7. Be2 (7. Bg5 dxc4 8. Bxc4 h6 9. Be3 Nf5 10. Qe2 c5 11. dxc5 b6 12. Rd1 Qe7 13. Bd3 Nxe3 14. Qxe3 bxc5 15. Be4 Bb7 16. O-O Nc6 17. Na4 Nd4 18. Nxc5 Nxf3+ {Evans,C (2300) -Burmeister,F (2270) ICCF 2017 1/2-1/2}) 7... dxc4 8. Bxc4 c5 9. dxc5 Qxd1+ 10. Nxd1 Nd7 11. Nc3 Nxc5 12. O-O a6 13. Rd1 Nd7 14. Bf4 h6 15. h4 Nc6 16. Re1 b5 17. Bf1 Bb7 18. Rad1 {Ciciotti,A (2399)-Nicholls,M (2244) ICCF 2010 1/2-1/2 (57)}) 7. h4 h6 8. Be3 b6 (8... Nf5 9. Qd2 Nxe3 10. fxe3 O-O 11. O-O-O b6 12. h5 g5 13. Be2 dxc4 14. Nh2 Nb4 15. Bxc4 Bb7 16. Ng4 c5 17. Kb1 Qc7 18. Qe2 cxd4 19. exd4 Bxg2 20. Rhg1 {Meißner,R (2255)-Anderson,C ICCF 2020 1-0 (63)}) 9. cxd5 Nxd5 10. Bb5 Bb7 11. Qa4 Nde7 12. Ba6 Bxa6 13. Qxa6 Nf5 14. O-O-O Qd7 15. a3 {Dimitrova,M (2155)-Nikolov,N ICCF 2015 1-0}) 6. Be2 (6. Bg5 h6 7. Be3 d5 8. Qd2 dxe4 9. Nxe4 Nf5 10. O-O-O b5 11. c5 Bb7 12. Qc2 Nc6 13. Ng3 Nb4 14. Qb3 a5 15. Bxb5 Rb8 16. Nxf5 gxf5 17. Bc4 {Volkov,A (1850)-Kabanevsky,A (2172) ICCF 2020 0-1}) (6. h4 d5 7. cxd5 exd5 8. h5 Nbc6 9. hxg6 hxg6 10. e5 Bg4 11. Be2 f6 12. exf6 Rxf6 13. Bg5 Re6 14. Kf1 Qd7 15. Rh4 Bh5 16. Rf4 Re8 17. a3 Nc8 { Demchenko,I (2152)-Kabanevsky,A (2172) ICCF 2020 1/2-1/2 (30)}) 6... d5 7. cxd5 (7. e5 dxc4 8. Bxc4 Nbc6 9. O-O b6 10. Re1 Bb7 11. Bf4 Na5 12. Be2 Nf5 13. Qd2 h6 14. g4 Nh4 15. Nxh4 Qxh4 16. Qe3 Rad8 17. Rad1 Rd7 18. g5 h5 {Loik,G (1928) -Manger,E (1802) ICCF 2014 1/2-1/2 (44)}) (7. O-O dxe4 8. Nxe4 Nbc6 9. Bg5 { 1-0 (9) Malbasic,L (1858)-Okroznik,G (1947) ICCF 2019}) 7... exd5 8. e5 f6 9. exf6 Bxf6 10. Bg5 Bxg5 11. Nxg5 Nf5 12. Nf3 Nc6 13. O-O a6 14. Re1 Qd6 15. Qd2 {Motúzová,M (1993)-Manger,E (1802) ICCF 2014 0-1 (27)}) (3... d5 4. cxd5 c6 5. dxc6 Bxd4 6. cxb7 Bxc3+ 7. bxc3 Qxd1+ 8. Kxd1 Bxb7 9. f3 f5 10. e3 Nf6 11. Rb1 Bd5 12. c4 Bf7 13. Nh3 h6 14. Bb2 O-O 15. Bxf6 {Linden,W (1920)-Cunha,E (2217) ICCF 2013 1-0 (37)}) (3... c6 4. e4 d5 (4... Qa5 5. Nf3 d6 6. Be2 Bg4 (6... Kf8 7. Rb1 (7. O-O Bd7 8. Qb3 Qb6 9. e5 Qxb3 10. axb3 dxe5 11. dxe5 c5 12. Rd1 e6 13. Be3 b6 14. b4 cxb4 15. Nb5 Bxb5 16. cxb5 Ke8 17. Bxb6 Nd7 18. Bc7 Ne7 { Steenhaut,D (1649)-Ipekyilmaz,E (1532) ICCF 2015 1-0 (55)}) 7... Bd7 8. b4 Qb6 9. c5 Qc7 10. O-O Be8 11. Bf4 Nd7 12. cxd6 exd6 13. Qc1 a6 14. b5 Ne7 15. Qa3 { Seelig,J (2323)-Ipekyilmaz,E (1532) ICCF 2015 1-0 (46)}) 7. O-O Bxf3 8. Bxf3 Na6 9. Rb1 Nb4 10. a3 Na6 11. b4 Qc7 12. b5 cxb5 13. e5 O-O-O 14. Nxb5 Qxc4 15. Nxa7+ Kb8 16. Rxb7+ {Hospers,B (2005)-Vaessen,J (1815) ICCF 2016 1-0}) (4... e5 5. dxe5 Bxe5 6. Nf3 Bg7 7. Be2 Ne7 8. Bg5 f6 9. Be3 O-O 10. Qd2 f5 11. e5 b6 12. O-O-O Qe8 13. h4 Bb7 14. h5 d5 15. Bh6 Rf7 16. e6 {Moran,R (1776)-Kalchev, S (1753) ICCF 2020 1-0}) (4... e6 5. Nf3 (5. Be3 Ne7 6. Qd2 O-O 7. Nf3 Kh8 8. c5 Kg8 9. h4 Kh8 10. h5 Kg8 11. Bh6 b6 12. hxg6 {1-0 (12) Tassone,R (2164) -Jones,S (1348) ICCF 2014}) 5... Ne7 (5... d5 6. e5 f6 7. exf6 Bxf6 8. Bd3 Ne7 9. O-O O-O 10. Bh6 Rf7 11. Ne5 Bxe5 12. dxe5 Nf5 13. Bxf5 Rxf5 14. f4 Qb6+ 15. Rf2 Nd7 16. Na4 {Whitted,D-Mayes,F (1549) ICCF 2015 1/2-1/2 (53)}) 6. Be3 d5 7. h4 dxe4 8. Nxe4 Nf5 9. Bg5 f6 10. Bf4 O-O 11. c5 e5 12. Bc4+ Kh8 13. dxe5 Qxd1+ 14. Rxd1 fxe5 15. Nxe5 Na6 16. h5 {Salmon,G-Mayes,F (1335) ICCF 2018 1-0}) ( 4... Nf6 5. e5 Ng8 6. Nf3 d6 7. Bf4 dxe5 8. Bxe5 f6 9. Bxb8 Rxb8 10. Qa4 a6 11. Rd1 Nh6 12. d5 O-O 13. dxc6 Qb6 14. Nd5 Qxb2 15. c7 Ra8 16. Qb3 {Cumming,D (2330)-Armstrong,J (1599) ICCF 2015 1-0 (54)}) (4... Qc7 5. Nf3 a6 6. Be2 d6 7. O-O Bg4 8. Be3 Nd7 9. h3 Bxf3 10. Bxf3 e6 11. Qd2 Ne7 12. Rfd1 c5 13. d5 Nb6 14. Be2 exd5 15. cxd5 O-O 16. Rac1 {Marcin,D (2080)-Truyens,A (2263) ICCF 2008 1/2-1/2 (57)}) 5. cxd5 cxd5 6. Nxd5 e6 {0-1 (6) Nowak,M (1912)-Wilshusen,H (1370) ICCF 2021} 7. Nc3 Bxd4 8. Qa4+ Nc6 9. Nf3 Bxc3+ 10. bxc3 Bd7 11. Be2 e5 12. Qc2 Qc7 13. Ba3 O-O-O 14. Rb1 Nf6 15. O-O h6 16. Rb2 Kb8 17. Rfb1 Bc8 18. Nd2 Na5 {Sobirey,M (2271)-Glembek,B (2236) ICCF 2015 1-0 (42)}) (3... b6 4. e3 (4. e4 d6 (4... Bb7 5. Be3 (5. Nf3 e6 (5... d6 6. d5 (6. Bd3 Nd7 7. Be3 e5 8. d5 a5 9. Qe2 Bh6 10. O-O Bxe3 11. Qxe3 Ngf6 12. b3 Qe7 13. h3 O-O 14. Bc2 Kg7 15. Nd2 {Raijmaekers,C (2287)-Robeille,J (2104) ICCF 2019 1-0 (65)}) 6... Nd7 7. Bd3 Ngf6 8. O-O O-O 9. Nd4 Nxd5 10. exd5 Bxd4 11. Bh6 Bxc3 12. Bxf8 Bxb2 13. Rb1 Qxf8 14. Rxb2 e5 15. f4 f5 16. g4 e4 17. Be2 {Devaraj,V-Reindel,O ICCF 2014 0-1 (27)}) 6. Bd3 (6. Bf4 Ne7 7. a3 O-O 8. Qd2 d5 9. cxd5 exd5 10. e5 Nf5 11. Bd3 Nh4 12. Nxh4 Qxh4 13. g3 Qh3 14. O-O-O Qe6 15. Nb5 Rc8 16. Kb1 a6 17. Nc3 c5 {Gomolka,E-Smith,J ICCF 2014 0-1 (40)}) 6... Ne7 7. O-O d5 8. exd5 exd5 9. Qe2 c5 10. Nxd5 Nbc6 11. Re1 O-O 12. Nxe7+ Nxe7 13. Qxe7 cxd4 14. Qxb7 Rb8 15. Qxa7 Qc8 16. Re7 Bf6 {Secrieru,I (1873)-Andrasiunas,K ICCF 2007 1-0 (34)}) 5... d6 6. Qd2 (6. Be2 e5 7. d5 a5 8. a3 Nd7 9. b4 Bh6 10. Bxh6 Nxh6 11. Qc1 axb4 12. Nb5 Ng8 13. axb4 Rxa1 14. Qxa1 Ngf6 15. f3 Ke7 16. Nh3 c5 17. dxc6 Bxc6 {Marcos Nozar,J (2112)-Spagnoli,E (2318) ICCF 2019 1/2-1/2 (37)}) 6... Nc6 7. a3 e5 8. d5 Nce7 9. Bg5 Nf6 10. Bxf6 Bxf6 11. Be2 O-O 12. Nf3 Bg7 13. O-O f5 14. exf5 Nxf5 15. Ng5 {Räisänen,T (1344)-Amelkina,I (1425) ICCF 2020 1-0 (43)}) 5. Nf3 Nd7 6. Qc2 (6. Be2 c5 7. O-O cxd4 8. Nxd4 Bb7 9. f3 Ngf6 10. Be3 O-O 11. Qd2 Re8 12. Rac1 Rc8 13. Rfd1 Ne5 14. Nd5 Qd7 15. b3 Nc6 16. Nb5 {Szymanski,R (2430)-Coope,D (2111) ICCF 2011 1-0 (40)}) 6... c5 7. d5 Ne5 8. Nxe5 Bxe5 9. Be2 Bg7 10. O-O Nf6 11. Bg5 O-O 12. Rae1 a6 13. Qd2 Bd7 14. a4 Kh8 15. f4 Ng8 { Grochowski,M (2274)-Coope,D (2111) ICCF 2011 1-0 (79)}) 4... a6 5. Nf3 h6 6. Be2 g5 7. h3 d6 8. Nh2 Bb7 9. O-O e6 10. e4 Ne7 11. f4 Nd7 12. fxg5 Ng6 13. Nf3 h5 14. Be3 Qe7 15. Qd2 {Analiev,D (1588)-Kaytazki,L (1506) ICCF 2020 0-1 (27)}) (3... a6 4. e4 Nc6 (4... b6 5. Nf3 Bb7 6. Be2 e6 7. Bf4 d6 8. O-O Ne7 9. Qd2 h6 10. Rad1 Nd7 11. e5 {1-0 (11) Taylor,B-Ipekyilmaz,E ICCF 2012}) (4... Nf6 5. e5 Ng8 6. Be3 d6 7. f4 Nh6 8. h3 O-O 9. g4 f6 10. exf6 exf6 11. Qd2 f5 12. g5 Nf7 13. h4 Re8 14. O-O-O b5 15. h5 c6 {Even,F (2464)-Truyens,A (2287) ICCF 2012 1/ 2-1/2 (48)}) 5. Nf3 e5 6. Bg5 f6 7. Be3 d6 8. Be2 Bg4 9. d5 Nce7 10. Qb3 b6 11. Ng5 Bd7 12. Ne6 Bxe6 13. dxe6 {1-0 (13) González Amaro,A (1839)-Thau,O (1771) ICCF 2019}) (3... Nc6 4. d5 Ne5 5. e4 Nf6 6. f4 Neg4 7. e5 d6 8. exf6 Nxf6 9. Nf3 Bf5 10. Bd3 Qd7 11. O-O O-O 12. Bxf5 Qxf5 13. Re1 Qh5 14. Rxe7 Rfe8 15. Rxc7 {Svaralová,M-Cviková,K (1684) ICCF 2010 1-0 (28)}) (3... e5 4. dxe5 Bxe5 5. Bd2 (5. Nf3 Bxc3+ 6. bxc3 Nf6 7. Bh6 Qe7 8. g3 b6 9. Bg2 Bb7 10. O-O Nc6 11. Nd4 Ne4 12. Bf4 Ne5 13. Nb5 d6 14. c5 Nxc5 15. Bxe5 dxe5 16. Bxb7 Nxb7 { Beltins,G (2075)-Vieth,M (2030) ICCF 2017 1/2-1/2}) 5... d6 6. Nf3 Bg7 7. h3 Ne7 8. e4 O-O 9. Be2 Nd7 10. O-O Nc5 11. b4 Ne6 12. Rb1 Nc6 13. Qc1 Ncd4 14. Bh6 Nxf3+ 15. Bxf3 {Stevens,M (1904)-McNeil,M (1918) ICCF 2016 1-0 (53)}) 4. d5 (4. e3 cxd4 (4... d6 5. dxc5 dxc5 6. Qxd8+ Kxd8 7. Nf3 Bxc3+ 8. bxc3 Nf6 9. Bd3 Nc6 10. Ng5 Ke8 11. O-O h6 12. Ne4 Nxe4 13. Bxe4 Na5 14. Bd5 e6 15. Bf3 Nxc4 16. Rb1 {Douglass,P (1821)-Kircher,C ICCF 2015 1-0 (39)}) (4... f5 5. Nf3 Nf6 6. Bd3 O-O 7. O-O Na6 8. a3 d6 9. Re1 Re8 10. Qc2 e5 11. dxe5 dxe5 12. e4 f4 13. h3 h6 14. Nd5 g5 15. Bd2 h5 16. Bc3 {Ximeris,D-Swiontek,S ICCF 2018 0-1 (25)}) 5. exd4 Nf6 6. d5 d6 7. Nf3 Nbd7 8. Be2 Qb6 9. O-O Nc5 10. Nd4 Nfe4 11. Nxe4 Nxe4 12. Nb3 O-O 13. Be3 Nc5 14. Rb1 Qc7 15. Nd4 a5 {Savegren,K (2427) -Wuttke,J (2263) ICCF 2010 1-0 (72)}) (4. dxc5 Na6 (4... Bxc3+ 5. bxc3 Nc6 6. Nf3 Qa5 7. Qc2 f5 8. Rb1 Qxc5 9. e3 b6 10. Rb5 Qd6 11. Qa4 Qc7 12. c5 Bb7 13. Bb2 Nf6 14. c4 O-O 15. Qb3 Na5 16. Qb4 {Bradney,R (1976)-Gardner,A (2109) ICCF 2014 0-1 (49)}) 5. Na4 Nxc5 6. e3 Qa5+ 7. Nc3 Bxc3+ 8. Bd2 Bxd2+ 9. Qxd2 Qxd2+ 10. Kxd2 Nf6 11. Rd1 d6 12. Kc1 Nfe4 13. Rd2 Nxd2 14. Kxd2 Be6 15. a3 O-O { Jones,S (1400)-Ricketts,M (1828) ICCF 2019 0-1 (33)}) 4... f5 5. e4 (5. Qc2 d6 6. g3 Nf6 7. Bg2 O-O (7... Nbd7 8. Nf3 a6 9. a4 O-O 10. O-O Rb8 11. Bg5 b6 12. Rae1 Ne5 13. Nxe5 dxe5 14. e4 Ne8 15. f4 Nd6 16. fxe5 Bxe5 17. Qe2 Bd4+ 18. Kh1 Re8 19. e5 {Maurya,S-Richter,F ICCF 2020 1-0 (31)}) 8. Nf3 Na6 9. O-O Bd7 (9... Rb8 10. Rd1 Qe8 11. Nb5 Bd7 12. Qb3 Bxb5 13. cxb5 Nc7 14. a4 h6 15. Nd2 e6 16. dxe6 d5 17. Nf1 Nxe6 18. Rxd5 Kh7 19. Re5 Nd4 20. Rxe8 Nxb3 21. Rxb8 {Sande,Ø (2149)-Evensen,C (1639) ICCF 2020 0-1 (53)}) 10. Bd2 Nc7 11. a4 e6 12. dxe6 Bc6 13. Ng5 Bxg2 14. Kxg2 Qe8 15. e4 h6 16. Nf3 fxe4 {Brodt,A (2400)-Szymanski,R (2325) ICCF 2010 1-0 (75)}) (5. g3 Bxc3+ (5... d6 6. Bg2 Bxc3+ 7. bxc3 Qa5 8. Qc2 Nd7 9. Nf3 Nb6 10. Nd2 Bd7 11. O-O Nf6 12. Qd3 Ng4 13. Nf3 Qa6 14. h3 Nf6 15. Nd2 h5 16. a4 h4 17. a5 {Nikel,B (1728)-Ottesen,S (2413) ICCF 2008 1/2-1/2 (49)}) 6. bxc3 Qa5 7. Qc2 (7. Qb3 d6 8. Qb5+ Qxb5 9. cxb5 Nd7 10. c4 Nb6 11. e3 Nf6 12. Bb2 a6 13. a4 axb5 14. axb5 Rxa1+ 15. Bxa1 Kf7 16. Nh3 h6 17. Nf4 Bd7 { Beck,G (2223)-Fermen,G (1804) ICCF 2011 0-1 (46)}) 7... d6 8. Rb1 Nd7 9. Nf3 Ngf6 10. Bh6 Rg8 11. Rb5 Qa3 12. e3 Ne4 13. Rb3 Qa4 14. Bd3 b5 15. cxb5 c4 16. Rb4 Qxc2 {Sande,Ø (2149)-Grabowski,E ICCF 2020 0-1 (57)}) (5. Nf3 d6 (5... Bxc3+ 6. bxc3 Nf6 (6... Qa5 7. Qc2 (7. Qb3 Nf6 (7... d6 8. g3 Nf6 (8... Nd7 9. Bg2 Nb6 10. e3 e5 11. dxe6 Bxe6 12. Ng5 Bxc4 13. Qa3 Qxa3 14. Bxa3 O-O-O 15. Bb2 Nf6 16. a4 Rhe8 17. Nf3 Ne4 18. Nd2 Nxd2 19. Kxd2 Kc7 20. Kc2 {Chripko,L (2071)-Sivic,K (2229) ICCF 2006 0-1 (71)}) 9. Bg2 Nbd7 10. O-O (10. Bh6 Ne4 ( 10... Rg8 11. O-O Nb6 12. h4 Bd7 13. Bf4 O-O-O 14. Nd2 Ba4 15. Qb1 Qxc3 16. Rc1 Qa3 17. Nb3 Ng4 18. Qd3 Kb8 19. Rab1 Rc8 20. Rc3 Bxb3 21. axb3 Qa5 22. Rc2 { Simeonov,L (2046)-Bochev,K (2171) ICCF 2008 1/2-1/2 (40)}) 11. Nh4 Nb6 12. Bxe4 fxe4 13. Ng2 Bh3 14. Ne3 O-O-O 15. g4 {1-0 (15) Fasser,W-Ackley,P (1926) ICCF 2010}) 10... Nb6 11. Bh6 Ne4 12. Nd2 Nxd2 13. Bxd2 Qa6 14. e4 Qxc4 15. Rfe1 Qxb3 16. axb3 fxe4 17. c4 Nd7 18. Rxe4 Nf6 19. Re2 {Repanic,F (2182)-Manarin,F (1694) ICCF 2009 1/2-1/2 (38)}) 8. Bh6 Rg8 9. h3 d6 10. Ng5 Nbd7 11. e3 b5 12. cxb5 Bb7 13. f3 Bxd5 14. Qc2 Ne5 15. a4 a6 16. Kf2 c4 17. Be2 axb5 18. axb5 Qxb5 {Stummerer,A (1895)-Niese,P (2333) ICCF 2010 0-1 (37)}) (7. Bd2 d6 8. Qc2 Nf6 9. e3 Nbd7 {0-1 (9) Liesenberg,M-Brun,J ICCF 2007} 10. Bd3 Nb6 11. O-O Qa6 12. Rfb1 Bd7 13. Rb2 Ba4 14. Qb1 Rb8 15. Qf1 Ne4 16. Rb3 g5 17. Bxe4 fxe4 18. Nxg5 Qxc4 19. Rb2 Qxd5 20. f4 Nc4 21. Rab1 Nxd2 {Cardwell,J-Whitehouse,G ICCF 2016 0-1}) 7... d6 8. Bf4 (8. e3 Nd7 9. Bd3 Nb6 10. O-O Qa4 11. Qe2 (11. Qb3 Nf6 12. Re1 Bd7 13. Rb1 Rg8 14. Ng5 h6 15. Ne6 Bxe6 {O'Keefe,M (1385)-Buss,M (2167) ICCF 2018 0-1 (56)}) 11... Nf6 12. Rb1 e5 13. dxe6 Bxe6 14. e4 fxe4 15. Ng5 O-O 16. Nxe4 Nxe4 17. Qxe4 Bf5 18. Qxb7 Bxd3 19. Bh6 Qd7 {Hall,T (2067) -Keber,E (1973) ICCF 2012 1/2-1/2}) (8. Rb1 Nd7 (8... Nf6 9. Bh6 Ne4 10. Rb3 Nd7 11. e3 Nb6 12. Bd3 Qa6 13. O-O Nxc4 14. Bxe4 fxe4 15. Qxe4 Bf5 16. Qh4 Bc2 17. Rxb7 Qxb7 18. Qxc4 Rb8 19. Ng5 Qb1 20. Qa6 {Linden,W (1952)-Gagliardi,V (2025) ICCF 2008 0-1 (54)}) 9. Bf4 Nb6 10. e3 Qa4 11. Qxa4+ Nxa4 12. Rb3 Nf6 13. Bd3 Bd7 14. Bg5 Ne4 15. Bh6 Rg8 16. Bxe4 fxe4 17. Ng5 Nb6 18. Ke2 Nxc4 19. Nxe4 Nb6 {Fasser,W-Moza,M (2216) ICCF 2010 0-1 (39)}) 8... Nf6 9. e3 Nbd7 (9... Ne4 10. Rc1 Nd7 11. Bd3 Ndf6 12. Nd2 Nxd2 13. Qxd2 O-O 14. O-O Qa6 15. Rb1 e5 16. Bh6 Rf7 17. f3 b6 18. Rb3 Bd7 19. Qc1 Kh8 20. Ra3 {1/2-1/2 (20) Bobel,P (2158)-De la Fuente Gonzalez,F (2127) ICCF 2006}) 10. Be2 (10. Nd2 b5 (10... Ne5 11. Be2 Bd7 12. O-O Qa4 13. Qb3 b6 14. Bxe5 dxe5 15. Nf3 e4 16. Ne5 Rd8 17. f4 exf3 18. Bxf3 O-O 19. Rfe1 Qa6 20. e4 f4 21. Qb2 Qc8 22. Nxd7 {Eichhorn, A-Moza,M (2227) ICCF 2011 1-0 (45)}) 11. cxb5 Nxd5 12. Bh6 Rg8 13. Rc1 Bb7 14. a4 a6 15. e4 fxe4 16. Nxe4 Nc7 17. bxa6 Bxa6 18. Be2 d5 19. Ng5 Bxe2 20. Qxe2 Qa6 21. c4 Qa5+ {Turczynski,M (2304)-Moza,M (2259) ICCF 2012 1/2-1/2 (46)}) ( 10. Bd3 b5 11. Rb1 bxc4 12. Bxc4 Nb6 13. Bb5+ Bd7 14. Bxd7+ Kxd7 15. O-O Nfxd5 16. Rfc1 Qa4 17. Qd2 Rhb8 18. Rb3 Kc6 19. h3 e5 20. Bg3 Nc4 21. Qc2 Rb6 { Turczynski,M (2257)-Szymanski,R (2166) ICCF 2009 0-1 (36)}) 10... b5 (10... Nb6 11. O-O Bd7 12. Nd2 O-O-O 13. Rab1 h6 14. Bg3 Rhe8 15. Rb2 e5 16. dxe6 Rxe6 17. Rfb1 Bc6 18. Bd3 Qa4 19. Qxa4 Nxa4 20. Rb3 d5 21. cxd5 Nxd5 22. Bc4 {Sutton,J (2260)-Lloyd,G (2278) ICCF 2005 0-1 (46)}) 11. Nd2 Nb6 12. Bh6 Kf7 13. cxb5 a6 14. O-O axb5 15. e4 Re8 16. f3 c4 17. Rfc1 Bd7 {Lumley,B (2410)-Lightowlers,O (2383) ICCF 2007 1/2-1/2 (31)}) 7. e3 (7. Bh6 Qa5 (7... d6 8. Qc2 (8. h3 Qa5 9. Qc2 Nbd7 10. Ng5 Ne5 11. e4 fxe4 12. Nxe4 Nxe4 13. Rc1 Bf5 14. Bd3 Nxd3+ 15. Qxd3 Nxf2 {0-1 (15) Thommen,J (1628)-Hayward,C ICCF 2020}) 8... e5 9. e3 (9. dxe6 Bxe6 10. e3 Nc6 11. Be2 Qe7 12. Rb1 O-O-O 13. O-O Ne4 14. Bd3 Ne5 15. Nxe5 dxe5 16. Bxe4 fxe4 17. Qa4 Rd6 18. Bg5 Qc7 19. Rfd1 Qd7 20. Qxd7+ Rxd7 { Hechl,G (2286)-Moza,M (2210) ICCF 2011 0-1 (40)}) 9... Nbd7 10. Be2 Qe7 11. O-O Ne4 12. Bd3 Ndf6 13. Qa4+ Bd7 14. Qb3 b6 15. h3 Ng8 16. Bxe4 Nxh6 17. Bc2 e4 18. Nd2 O-O 19. a4 {Kumar,V-Cooper,N (2068) ICCF 2017 0-1}) 8. Qc2 d6 (8... Ne4 9. Nd2 Qxc3 10. Qxc3 Nxc3 11. Bg7 Rg8 12. Bxc3 d6 13. e3 Nd7 14. Be2 Ne5 15. Rb1 g5 16. O-O b6 17. f4 Ng4 18. Rfe1 Nxe3 19. Bh5+ Kd7 20. Rxe3 {Solá, M-Eisert,J ICCF 2013 1-0}) 9. e3 (9. Nd2 Nbd7 10. e3 Ne5 11. Be2 Nf7 12. Bg7 Rg8 13. Bxf6 exf6 14. O-O Bd7 15. a4 Kf8 16. Rfb1 Rb8 17. Nb3 Qd8 18. a5 Qe8 19. a6 b6 20. Qb2 g5 {Saharinen,P (1892)-Vliet,E (1900) ICCF 2015 0-1 (27)}) 9... Nbd7 10. Be2 Ng4 (10... b5 11. cxb5 a6 12. O-O axb5 13. a4 bxa4 14. c4 Ne4 15. Bg7 Rg8 16. Bb2 Ndf6 17. Ra2 Bd7 18. Ba1 g5 19. Bd3 Qa6 20. Rb1 Kd8 21. Bxf6 exf6 22. h4 {Isigkeit,H (2381)-Szymanski,R (2377) ICCF 2017 1/2-1/2 (36)}) 11. Bf4 O-O 12. O-O Nge5 13. Nxe5 Nxe5 14. Bg5 Rf7 15. Rfe1 Kg7 16. Bf4 Bd7 17. e4 fxe4 18. Bxe5+ {Arnold,E (1964)-Manarin,F (1915) ICCF 2015 1/2-1/2 (41)}) ( 7. Qc2 Qa5 8. e3 d6 9. Bd3 Nbd7 10. O-O Nb6 (10... Ne5 11. Nxe5 dxe5 12. f3 Bd7 13. a4 O-O 14. Bd2 e6 15. Rfb1 Qc7 16. e4 f4 17. Be1 Rf7 18. Be2 Rg7 19. Kh1 Ne8 20. a5 Rd8 21. Qd2 Nd6 22. Rd1 {Zaas,J (2276)-Hale,A (2244) ICCF 2019 1/ 2-1/2 (30)}) 11. Re1 Qa4 12. Nd2 e5 13. Qxa4+ Nxa4 14. Nb1 Bd7 15. Bc2 e4 16. Bxa4 Bxa4 17. Nd2 O-O 18. Rb1 b6 {Cameron,S (1803)-Langenegger,T (1779) ICCF 2014 0-1 (31)}) (7. g3 Qa5 (7... O-O 8. Bg2 Qa5 9. Qd3 d6 10. O-O Nbd7 11. Bf4 Ne4 12. Rfc1 Qa4 13. Ng5 Nxg5 14. Bxg5 Re8 15. Qb1 {1/2-1/2 (15) Medeiros, S-Manarin,F (1655) ICCF 2008}) 8. Qc2 d6 9. Bg2 Nbd7 10. O-O Nb6 11. Ng5 (11. Nd2 Bd7 12. e4 O-O 13. Re1 fxe4 14. Nxe4 Nxc4 15. Bh6 Rfe8 16. Bg5 Kg7 17. Qb3 Qa4 18. f4 Ng8 19. Bf1 Qxb3 20. axb3 Nb6 21. c4 Nh6 22. Bxh6+ Kxh6 {Mason,I (2226)-Cook,D (2151) ICCF 2014 1/2-1/2 (27)}) 11... Qa4 12. Qxa4+ Nxa4 13. e4 h6 14. exf5 hxg5 15. fxg6 Rg8 16. Bxg5 Rxg6 17. h4 Bf5 18. Rfe1 Nb6 {Linden,W (1740)-Mataix Arbona,C (1906) ICCF 2019 0-1 (34)}) (7. Qa4 O-O 8. Bh6 Re8 9. e3 d6 10. Be2 Nbd7 11. O-O Ne4 12. Bd3 Ndf6 13. Qc2 e5 14. dxe6 Bxe6 15. Ng5 Nxg5 16. Bxg5 Kg7 17. Rab1 b6 18. e4 Qd7 {Arnold,E-Manarin,F (1860) ICCF 2013 1/2-1/ 2 (26)}) 7... O-O 8. Bd3 d6 9. O-O Nbd7 10. Re1 Ne4 11. Bb2 e5 12. Bc2 Qa5 13. a4 Ndf6 14. Qe2 Bd7 15. h3 b6 16. Ra3 Qa6 17. Nh2 {Purtell,B-Manarin,F (1694) ICCF 2009 0-1 (49)}) 6. g3 Na6 7. Bg2 Nc7 8. O-O Nh6 9. Qd3 O-O 10. a3 Nf7 11. Rb1 a5 12. b3 Bd7 13. Bd2 Rb8 14. Qc2 e5 15. h4 e4 16. Ng5 Ne5 {Smyth,S (1922) -Faust,D (1825) ICCF 2019 0-1 (44)}) 5... Bxc3+ (5... fxe4 6. Nxe4 Nf6 7. Bd3 Nxe4 8. Bxe4 Qb6 9. Nf3 Qb4+ 10. Nd2 d6 11. a3 Qa5 12. O-O Nd7 13. Nf3 Ne5 14. Ng5 O-O 15. h3 Rf6 16. Qc2 Qa6 17. b3 {Bouillod,Y-Dziedzic,A (2043) ICCF 2014 1-0 (60)}) 6. bxc3 fxe4 7. f3 (7. Qc2 e5 (7... Nf6 8. f3 O-O (8... e3 9. Bxe3 d6 10. Ne2 Nbd7 11. Ng3 Qa5 12. Bd2 Ne5 13. f4 Nf7 14. Bd3 Bd7 15. O-O O-O-O 16. Rfe1 Rde8 17. Re2 Bg4 18. Re3 Kb8 19. h3 Bc8 20. Ne4 {Schmidt,T (2572) -Mohrlok,D (2523) ICCF 2008 1/2-1/2}) 9. fxe4 d6 10. Nf3 Bg4 11. Bh6 Nbd7 12. Ng5 Ne5 13. h3 Bd7 14. Be2 Re8 15. O-O Qc7 16. Qd2 Qc8 17. Rf4 Qc7 18. Raf1 a6 19. Rh4 {Müller,H (1972)-Manarin,F (1915) ICCF 2015 1-0}) 8. Qxe4 d6 9. Ne2 Nf6 10. Qb1 Qb6 11. Ng3 Qxb1 12. Rxb1 Nbd7 13. Bh6 Kd8 14. f3 Kc7 15. Bd3 Rg8 16. Kd2 a6 17. h4 b5 18. Ne4 bxc4 {Hildebrand,G (2383)-Moza,M (2257) ICCF 2012 1/ 2-1/2}) 7... Qa5 (7... e5 8. Nh3 (8. Qc2 d6 9. fxe4 Qh4+ (9... Nd7 10. Nf3 h6 11. Be2 g5 12. Be3 Qe7 13. O-O Ngf6 14. Rab1 (14. Nd2 Nf8 15. Qa4+ Kf7 16. h4 gxh4 17. Bf2 N8h7 18. Bxh4 Ng5 19. Rf2 Kg7 20. Raf1 Ng4 21. Rf7+ Qxf7 22. Rxf7+ Kxf7 23. Qa5 b6 24. Qa4 Ke7 25. Nf3 Bd7 {Mroczek,J (2237)-Moza,M (2210) ICCF 2011 1/2-1/2 (26)}) 14... Kd8 15. Nd2 Nf8 16. g3 Ng6 17. Qa4 Nf4 18. Qa5+ b6 19. Rxb6 Nxe2+ 20. Kg2 axb6 21. Qxa8 {Flatz,H (2290)-Moza,M (2246) ICCF 2011 0-1 (34)}) (9... Nf6 10. Nf3 Bg4 (10... h6 11. Be2 Nbd7 12. Nh4 Nf8 13. O-O g5 14. Nf5 Bxf5 15. Rxf5 Qe7 16. Qa4+ Qd7 17. Qc2 N8h7 18. g3 O-O 19. Rb1 Kh8 20. h3 Qg7 21. a4 b6 22. Ra1 {Reed,A (2256)-Buss,M (2252) ICCF 2020 1/2-1/2 (26)}) 11. Be2 Bxf3 12. Bxf3 h5 13. O-O Nbd7 14. Bg5 O-O 15. Rf2 Qe7 16. Rb1 Nb6 17. a4 Qc7 18. a5 Nbd7 19. Bh6 Rf7 20. Rbf1 Rh7 21. Qc1 {Walczak,P (2469) -Zlotkowski,A (2452) ICCF 2009 1-0 (47)}) (9... Nh6 10. Nf3 (10. h4 Ng4 11. Bg5 Qc7 12. h5 gxh5 13. Rxh5 Qg7 14. Nf3 h6 15. Bd2 Nd7 16. Nh4 Ndf6 17. Nf5 Qh7 18. Be2 Nxh5 19. Nxd6+ Kd7 20. Bxg4+ Kxd6 21. Bxh5 Qg7 {Rodríguez Pardo, F-Sivic,K (2229) ICCF 2006 1/2-1/2 (34)}) 10... Nf7 11. Bd3 Nd7 12. O-O O-O 13. Qd2 h6 14. Qf2 Kh7 15. Qg3 Nf6 16. Nh4 Rg8 17. Qf2 Kg7 18. Be3 Ng5 19. Qd2 Ng4 20. Bxg5 Qxg5 21. Qxg5 {Lounek,J (2520)-Gavrilakis,N (2464) ICCF 2008 1/2-1/2 (33)}) 10. g3 Qe7 11. Bg2 (11. Nf3 Nd7 12. Bg2 h6 13. O-O Ngf6 14. a4 g5 15. Ra2 Nh5 16. Ne1 Ndf6 17. Nd3 O-O 18. Nf2 Bd7 19. Rb2 Rab8 20. a5 Qd8 21. Ra2 Qc7 22. Qe2 Rbd8 {Lins,T (2491)-Szymanski,R (2389) ICCF 2013 1/2-1/2 (30)}) 11... Qg7 12. Nf3 (12. Nh3 Nf6 13. O-O h6 14. Nf2 Nbd7 15. a4 O-O 16. Rb1 Rb8 17. Qd2 Kh7 18. Qe2 Ng8 19. Bd2 Ndf6 20. Rb2 Qc7 21. Ra1 Bd7 22. a5 Rf7 23. Be3 Rbf8 {Armani,G (2341)-Szymanski,R (2372) ICCF 2018 0-1 (44)}) 12... Nf6 13. O-O (13. Bd2 h6 14. O-O O-O 15. Nh4 Nbd7 16. a4 Rb8 17. h3 Nh5 18. Qd3 Ndf6 19. Kh2 Nh7 20. Rxf8+ Nxf8 21. Qf3 Nh7 22. Nf5 Bxf5 23. exf5 N5f6 24. Qd3 g5 {Anreiter, A (2197)-Niese,P (2296) ICCF 2012 1/2-1/2 (30)}) 13... h6 (13... O-O 14. a4 h6 15. Nh4 (15. Qd2 g5 16. Ne1 Nbd7 17. Qe2 Nh7 18. Nc2 Rxf1+ 19. Qxf1 Qf7 20. Qe2 Ndf6 21. a5 Kg7 22. h3 Ng8 23. Ne3 Ne7 24. Bd2 Nf6 25. Rb1 Rb8 26. Qf3 Qe8 { Evans,G (2408)-Schwarz,J (2253) ICCF 2011 1/2-1/2 (36)}) 15... Nbd7 16. Qd2 Kh7 17. a5 b6 18. Qd3 bxa5 19. Rxa5 Nb6 20. Rf2 Rb8 21. h3 Rb7 22. Raa2 Rbf7 23. Rf3 Ng8 24. Kh2 Rxf3 25. Nxf3 {Sileika,A (1678)-Knöppel,B (2063) ICCF 2017 1/ 2-1/2 (29)}) 14. a4 g5 15. Ra2 (15. Qe2 Bg4 16. Qd3 O-O 17. Ne1 Bh5 18. Nc2 Nbd7 19. Ne3 Bg6 20. Ra2 Qh7 21. Nf5 Bxf5 22. Rxf5 Nh5 23. Rxf8+ Rxf8 24. Bh3 Kh8 25. Bf5 Qe7 26. Rb2 Ndf6 {Brzoza,M (2271)-Szymanski,R (2456) ICCF 2015 1/ 2-1/2 (38)}) 15... Nbd7 16. a5 Nh7 17. Qd3 O-O 18. Be3 Ndf6 19. Ne1 Qg6 20. Nc2 Bd7 21. Rb2 Rab8 22. Ne1 Qh5 23. Nf3 Rfc8 24. h4 Ng4 25. hxg5 hxg5 26. Rfb1 Rc7 27. Qd2 Nhf6 28. Qd3 Bf5 29. exf5 e4 30. Qd2 exf3 31. Bxf3 Rg7 32. Bxc5 dxc5 33. Re1 Qh7 34. Qd3 Rf7 35. d6 Kg7 36. Re6 Qh3 37. Bxg4 Qxg4 38. Rbe2 b5 39. axb6 Rxb6 40. Kg2 Qh5 {0-1 (40) Hauff,A (2359)-Szymanski,R (2398) ICCF 2013 Unusual replies to-1 d4}) (8. dxe6 Nc6 9. Qc2 Qh4+ 10. g3 Qe7 11. Qxe4 d6 12. Bf4 Nf6 13. Qe3 Bxe6 14. O-O-O O-O-O 15. Nh3 Rhe8 16. Ng5 Kc7 17. Nxe6+ Qxe6 18. Qxe6 Rxe6 19. Kc2 Rf8 {Koch,H (2334)-Dreisch,J (1996) ICCF 2017 1/2-1/2 (25)}) (8. d6 Qf6 9. fxe4 Nh6 10. Nf3 Nf7 11. Be2 Nc6 12. Qd5 Qxd6 13. Ng5 Ncd8 14. O-O Qxd5 15. exd5 Nxg5 16. Bxg5 d6 17. Bxd8 Kxd8 18. Rf7 h5 19. Bd3 Bf5 { Bucsa,I (2372)-Keber,E (2288) ICCF 2021 1/2-1/2 (49)}) 8... Nf6 (8... d6 9. Nf2 Nd7 (9... Nf6 10. fxe4 Qe7 11. Be2 Qg7 (11... h6 12. O-O Nbd7 13. a4 (13. Bg4 Nxg4 14. Nxg4 Qg7 15. Qf3 g5 16. Bd2 Qg6 17. a4 a5 18. Rf2 Rf8 19. Qe2 Rxf2 20. Qxf2 Qxe4 21. Nf6+ Nxf6 22. Qxf6 Qh7 23. Rf1 Kd7 24. Qe6+ Kc7 {Lund,S (1340) -Lockett,J ICCF 2019 1-0 (29)}) (13. Rb1 Qg7 14. Be3 O-O 15. Qc1 g5 16. Nh1 Nh7 17. Re1 Rf7 18. Bh5 Re7 19. Ng3 Ndf6 20. Be2 Nf8 21. Nf5 Bxf5 22. exf5 Rb8 23. Rd1 e4 24. Re1 b6 {Demakov,V (2436)-Szymanski,R (2442) ICCF 2014 1/2-1/2 (32)}) 13... Qg7 14. a5 g5 15. Ra2 Nf8 16. Ng4 N8h7 17. Nxf6+ Nxf6 18. Bh5+ Ke7 19. Raf2 Rf8 20. Be3 b6 21. axb6 axb6 22. h4 Bd7 23. hxg5 {Bartsch,R (2260) -Szymanski,R (2372) ICCF 2018 1/2-1/2 (39)}) 12. Rb1 (12. a4 Nbd7 13. a5 h5 14. O-O (14. Rb1 Nf8 15. Qa4+ Qd7 16. Qc2 Qc7 17. O-O N8h7 18. Qa4+ Bd7 19. Qa1 O-O 20. Bh6 Rf7 21. Bd2 Re8 22. Qb2 Bc8 23. h3 Kh8 24. Qc2 Rg8 25. Qd3 g5 { Zolochevsky,V (2351)-Hrubcík,M (2393) ICCF 2018 1/2-1/2 (57)}) 14... Nf8 15. Rb1 Rb8 16. Be3 N8h7 17. h3 O-O 18. Rb2 Rf7 19. g3 Bd7 20. Bf3 Qf8 21. Bg2 g5 22. Qc1 Rg7 23. Bd2 Qc8 {Korshunov,S (2353)-Szymanski,R (2360) ICCF 2020 0-1 (66)}) (12. O-O Nbd7 13. a4 O-O 14. a5 Kh8 15. Be3 Ng8 16. h3 Ndf6 17. Bf3 Rb8 18. Qd2 h6 19. Nd3 g5 20. Nf2 Bd7 21. Rab1 Qg6 22. Qe2 h5 23. g4 hxg4 { Storkebaum,K (2260)-Mondry,M (2253) ICCF 2018 0-1 (39)}) (12. Be3 Nbd7 13. Qd2 h6 14. O-O g5 15. Qc2 Nf8 16. Bd2 Ng6 17. g3 O-O 18. a4 Qc7 19. Kg2 Bd7 20. a5 Rae8 21. Rfb1 Re7 22. Ra2 Ref7 23. Be3 Qc8 {Voigt,D (2207)-Cooper,N (2207) ICCF 2020 1/2-1/2 (27)}) 12... Nbd7 13. g4 h6 14. h4 Kd8 15. Be3 Kc7 16. Qb3 g5 17. hxg5 hxg5 18. Rxh8 Qxh8 19. Bxg5 Nb6 20. a4 {1/2-1/2 (20) Slyusar,V (2194) -Yunusov,A (2452) ICCF 2018}) (9... exf3 10. Qxf3 Bf5 (10... Nf6 11. Bg5 Nbd7 12. Bd3 O-O 13. O-O Qe8 14. Bh6 Rf7 15. Ne4 Nxe4 16. Qxe4 b6 17. Rxf7 Qxf7 18. Rf1 Qe8 19. h4 Rb8 20. h5 Ba6 21. Be2 b5 22. cxb5 {Vötter,H (2359)-Puertas Covarrubias,F (1973) ICCF 2018 1-0 (30)}) 11. g4 Bc8 12. Be2 Qc7 13. Ne4 Nd7 14. O-O Kd8 15. Bg5+ Ne7 16. Qf7 Re8 17. Qxh7 Nf8 18. Qg7 Ne6 19. dxe6 Bxe6 20. Rad1 d5 21. cxd5 {Prozorovsky,V (2331)-Pardoe,I (1684) ICCF 2016 1-0 (29)}) 10. Nxe4 (10. fxe4 Ndf6 11. Be2 Bd7 12. Rb1 Qc7 13. a4 O-O-O 14. Qb3 h6 15. a5 Ne7 16. O-O g5 17. Be3 Ng6 18. g3 Rhf8 19. Rb2 Kb8 20. Rfb1 Bc8 21. Qb5 Rf7 { Vetter,G (2288)-Titzhoff,F (2331) ICCF 2015 0-1 (48)}) 10... Ndf6 11. Ng3 (11. Nf2 Qc7 12. a4 Bf5 13. g4 Bd7 14. Bd3 O-O-O 15. Be3 Kb8 16. a5 Bc8 17. h3 Ne7 18. Qd2 Rdf8 19. Kd1 Rf7 20. Rf1 Re8 21. Kc2 Neg8 22. Nh1 Ref8 {Szerlak,A (2309)-Titzhoff,F (2330) ICCF 2017 1/2-1/2 (49)}) 11... Bf5 12. Bd3 Qd7 13. O-O O-O-O (13... Ne7 14. Bg5 O-O 15. f4 Bxd3 16. Qxd3 e4 17. Qc2 Nf5 18. Bxf6 Nxg3 19. hxg3 Rxf6 20. Rae1 Qg4 21. Re3 Re8 22. Qa4 Re7 23. Qxa7 h5 24. Qb8+ Kg7 25. Qd8 {Kleiser,G (2312)-Moza,M (2277) ICCF 2013 1/2-1/2 (48)}) 14. Nxf5 gxf5 15. Rb1 Ne7 16. Rf2 Kc7 17. Bg5 Rhf8 18. Rb5 b6 19. a4 Nc8 {Kleiser,G (2067) -Fahrner,K (2199) ICCF 2011 1-0}) 9. Nf2 d6 10. fxe4 Qe7 11. Be2 Qg7 12. Be3 h6 13. Qd2 g5 14. O-O Nbd7 15. Nh1 Nf8 16. Ng3 Ng6 17. Nh5 Nxh5 18. Bxh5 Bd7 19. Qb2 {Koistinen,K (2236)-Ilonen,I (2324) ICCF 2016 1/2-1/2 (30)}) (7... d6 8. fxe4 Nf6 9. Bd3 (9. Qc2 Nbd7 10. Nf3 (10. Be2 Ne5 11. Nf3 Nxf3+ 12. Bxf3 O-O 13. O-O Nd7 14. Bh6 Rf7 15. Be2 Ne5 16. Qd2 Rxf1+ 17. Rxf1 Nf7 18. Bg5 Bd7 19. h4 Nxg5 20. Qxg5 e6 21. Qg3 Qe7 {Morley,P (2384)-Schmidt,L (2388) ICCF 2014 1/ 2-1/2 (44)}) 10... Ng4 11. Be2 Nde5 (11... O-O 12. h3 Nge5 13. Bh6 Rf6 14. Bg5 Nxf3+ 15. Bxf3 Rf7 16. O-O Ne5 17. Be2 b6 18. Rxf7 Nxf7 19. Bh4 Bd7 20. Qd2 Qf8 21. a4 a5 22. Bg3 Qg7 23. Bf4 {Ilascu C.,I (2090)-Vasile,C (2183) ICCF 2015 1/ 2-1/2 (51)}) 12. h3 Nxf3+ 13. gxf3 Ne5 14. Bh6 Bd7 15. Bg7 Rg8 16. Bxe5 dxe5 17. Rg1 Qc7 18. Bf1 O-O-O 19. h4 Rdf8 20. Rg3 Rf4 {Pihlajamäki,J (1716) -Koskinen,E (2278) ICCF 2017 0-1 (31)}) 9... Nbd7 (9... O-O 10. Nf3 Bg4 11. O-O Nbd7 12. Bh6 Rf7 13. h3 Bxf3 14. gxf3 Qe8 15. f4 Kh8 16. Kh2 e5 17. dxe6 Qxe6 18. Qe2 Ng8 19. Bg5 h6 20. Bh4 Raf8 21. Bg3 {Laan,A (2177)-Vliet,E (1949) ICCF 2017 1/2-1/2 (35)}) 10. Nf3 Ne5 (10... Ng4 11. Bf4 O-O 12. Qd2 Nde5 13. Nxe5 Nxe5 14. O-O b6 (14... Rf6 15. Bh6 Nf7 16. Rxf6 exf6 17. Rf1 g5 18. e5 dxe5 19. Qc2 Nxh6 20. Bxh7+ Kh8 21. Qg6 Bf5 22. Qxh6 Bxh7 23. Rxf6 Qe7 24. Qxg5 Rg8 25. Qh4 Rg6 26. Rf4 {Redlinger,L (1785)-Cooper,N (2069) ICCF 2016 0-1 (52)}) 15. Be2 {1-0 (15) Hofmann,W (2127)-Koffler,D (2024) ICCF 2009}) 11. Nxe5 dxe5 12. O-O Qd6 13. Bh6 Bd7 14. Rb1 b6 15. Qe1 Ng4 16. Bd2 h6 17. Bc2 g5 18. a4 a5 19. Qe2 {Wærstad,L (2137)-Keber,E (2187) ICCF 2013 1/2-1/2}) (7... Nf6 8. fxe4 Qa5 9. Qb3 d6 10. Bd3 O-O 11. Nf3 Kg7 12. O-O Qc7 13. Rb1 e5 14. Rb2 Nh5 15. Rbf2 Nf4 16. Qc2 Qe7 17. Bxf4 exf4 18. Qd2 Nd7 19. Re1 {Sadler,C-Manarin,F (1655) ICCF 2008 1/2-1/2}) 8. Qc2 Nf6 (8... d6 9. fxe4 Nd7 10. Nf3 Ngf6 11. Bd3 Ne5 ( 11... Ng4 12. O-O Nde5 13. Nxe5 Nxe5 14. Bf4 (14. Bh6 Rg8 (14... Ng4 15. Bf4 Bd7 16. Be2 O-O-O 17. Bxg4 Bxg4 18. h3 Bd7 19. Bg5 Ba4 20. Qd2 Rd7 21. e5 dxe5 22. Rae1 Qc7 23. Re4 b6 24. Qe3 Qd8 25. Rxe5 Rf8 26. Re1 {Künzel,U (2129) -Brandl,A (2068) ICCF 2019 1-0 (28)}) 15. Bf4 Bd7 16. Bxe5 dxe5 17. Rab1 Qc7 18. Qd2 g5 19. Be2 O-O-O 20. Rf7 Qd6 21. Rbf1 h6 22. Qe3 g4 23. Rh7 Rh8 24. Rff7 Rxh7 25. Rxh7 Qb6 {Beer,D (2010)-Lanin,B (2069) ICCF 2020 1-0 (41)}) 14... Bd7 15. Rab1 O-O-O 16. Bxe5 dxe5 17. Rf7 Rde8 18. Rbf1 h6 19. Rg7 g5 20. Qb2 Kb8 21. Rff7 Rhf8 22. Bf1 Rxf7 23. Rxf7 {Bruce,R (1792)-Hanegby,A (2074) ICCF 2014 1/2-1/2 (37)}) 12. Nxe5 dxe5 13. O-O Bd7 14. d6 (14. Bg5 O-O 15. Qd2 Qc7 16. Rf2 Qd6 17. Bh6 Rf7 18. Raf1 Be8 19. Qg5 Rb8 20. Qh4 a6 21. Bg5 Bd7 22. Be2 b5 23. Bxf6 exf6 24. Rxf6 Qe7 25. g3 Rxf6 {Donnenfeld,P (2493)-Menéndez,D (2473) ICCF 2006 1-0 (42)}) 14... Rf8 15. dxe7 Kxe7 16. Bg5 Rf7 17. Rf3 { Lil',P-Avdeev,A (2167) ICCF 2012 1-0 (29)}) 9. fxe4 Nxe4 10. Bd3 Nf6 11. d6 Rg8 12. Bg5 Qa6 13. Rd1 {1-0 (13) Zolochevsky,V (2363)-Trofimov,V (2413) ICCF 2012} ) (3. g3 c5 (3... e6 4. Bg2 d6 5. Nc3 h6 6. e4 Ne7 7. Nf3 a6 8. O-O e5 9. Be3 f6 10. Qd2 f5 11. dxe5 dxe5 12. Qe2 Qd6 13. exf5 Bxf5 14. Rad1 Qf6 15. Nxe5 { Novikov,A (1935)-Ipekyilmaz,E (1523) ICCF 2013 1-0}) (3... d5 4. cxd5 Qxd5 5. Nf3 c6 6. Nc3 Qa5 7. Bg2 Nf6 8. O-O O-O 9. Qb3 Qb6 10. Qxb6 axb6 11. h3 e6 12. Bf4 Na6 13. e4 Rd8 14. Rfe1 Nb4 15. Rad1 {Schilleci,C (1829)-Zondervan,F (1476) ICCF 2019 1-0}) 4. d5 b5 (4... d6 5. Bg2 Qa5+ 6. Nd2 b5 7. cxb5 Qxb5 8. Ngf3 Ba6 9. O-O Qxe2 10. Qxe2 Bxe2 11. Re1 Ba6 12. Ne4 Kd8 13. Neg5 Nh6 14. Ne4 Bc4 15. Nxc5 Bxd5 16. Bxh6 {Bruce,R-Sosa Landa,H (1688) ICCF 2013 1-0 (30)}) (4... Qa5+ 5. Nd2 d6 6. Ngf3 b5 7. Bg2 Nf6 8. O-O Nbd7 9. b4 cxb4 10. Bb2 bxc4 11. Nxc4 Qa6 12. Ne3 O-O 13. Nd4 Re8 14. Nc6 Ng4 15. Bxg7 Nxe3 16. fxe3 {Rodolfo Masera,L (2260)-Roynet,S (2121) ICCF 2017 1/2-1/2}) 5. Qd2 (5. cxb5 Nf6 6. Nc3 d6 7. a4 a6 8. Bd2 O-O 9. Bg2 Nbd7 10. Nf3 Bb7 11. e4 Ng4 12. O-O axb5 13. axb5 Rxa1 14. Qxa1 Qb6 15. Bh3 Nge5 16. Qd1 Bc8 {Aupí Royo,J (2385)-Schmidt,L (2306) ICCF 2013 1/2-1/2 (36)}) 5... bxc4 6. Bg2 d6 7. Qc2 Na6 8. Qxc4 Rb8 9. Qc2 Qa5+ 10. Nc3 Nf6 11. e3 Nb4 12. Qd2 Ba6 13. Nge2 Nd3+ 14. Kf1 Ng4 {Fraser,W (1791) -Reindel,O ICCF 2015 0-1 (28)}) (3. f3 c5 (3... d6 4. e4 Nd7 5. Be3 e6 6. Nc3 Ne7 7. Nge2 O-O 8. Qd2 b6 9. g4 Bb7 10. h4 f5 11. g5 Rc8 12. Nd1 fxe4 13. f4 Nf5 14. h5 d5 15. h6 {Sampson,H (1331)-Taylor,R (1340) ICCF 2020 0-1 (41)}) 4. d5 d6 5. e4 e6 6. Nc3 exd5 7. cxd5 a6 8. a4 Nd7 9. Nh3 Qh4+ 10. Nf2 Bd4 11. g3 Qf6 12. Bg2 h5 13. O-O h4 14. g4 h3 {Pitkänen,J (1836)-Szymanski,R (2290) ICCF 2009 0-1 (35)}) (3. Bf4 c5 4. e3 cxd4 5. exd4 Nf6 6. Nf3 O-O 7. Nc3 d5 8. cxd5 Nxd5 9. Be5 Bh6 10. Bc4 Nxc3 11. bxc3 Bg4 12. O-O Nc6 13. Be2 Nxe5 14. Nxe5 Bxe2 {Bray,P (1619)-Ricketts,M (1828) ICCF 2019 0-1 (40)}) (3. e3 e6 4. a3 Nf6 5. Bd3 O-O 6. Nf3 b6 7. Nbd2 Bb7 8. Qc2 d6 9. Ne4 Nxe4 10. Bxe4 Bxe4 11. Qxe4 Nd7 12. Bd2 Nf6 13. Qh4 c5 14. Bc3 cxd4 {Hardwick,M (1417)-Sierra Oca,J (1660) ICCF 2014 0-1 (34)}) 3... c5 (3... Nc6 4. Nc3 (4. e4 d6 (4... e5 5. Bg5 (5. d5 Nd4 6. Nxd4 exd4 7. Nd2 (7. Bd3 d6 (7... c5 8. O-O d6 9. Nd2 Nf6 10. Nf3 Bg4 11. Bg5 h6 12. Bf4 Nh5 13. Bd2 Qf6 14. Qa4+ Bd7 15. Qc2 Nf4 16. Rae1 Nxd3 17. Qxd3 O-O 18. b4 Rfe8 19. bxc5 {Lewis,J (2067)-Anderson,C ICCF 2017 1-0 (41)}) 8. O-O Nf6 9. Bg5 c5 10. dxc6 bxc6 11. c5 h6 12. Bh4 g5 13. Bg3 dxc5 14. Nd2 Be6 15. Rc1 Qe7 16. Qc2 Nd7 17. b4 O-O 18. bxc5 Ne5 {Livie,G (2338)-Millstone, M (2447) ICCF 2008 1/2-1/2 (34)}) 7... c5 8. b4 b6 9. Bd3 d6 10. f4 Ne7 11. bxc5 bxc5 12. O-O f5 13. e5 dxe5 14. fxe5 Bxe5 15. Nf3 Bf6 16. Bh6 {1-0 (16) Mehlhorn,I (1842)-Thau,O (1771) ICCF 2019}) (5. dxe5 Nxe5 6. Nxe5 (6. Nc3 d6 7. c5 Nxf3+ 8. Qxf3 Be6 9. cxd6 Qxd6 10. Nb5 Qc6 11. Bf4 Bxb2 12. Rb1 Bc3+ 13. Nxc3 O-O-O 14. Rc1 Qb6 15. Nd5 Qa5+ 16. Bd2 Qxa2 17. Qg3 Rd7 {Perryn,J-White,C (1766) ICCF 2015 1-0}) 6... Bxe5 7. Be2 d6 (7... Qh4 8. Qd3 d6 9. Nc3 c6 (9... Nf6 10. Bd2 Bg4 11. g3 Bxe2 12. Qxe2 Qg4 13. f4 Qxe2+ 14. Kxe2 Bd4 15. Nb5 Bb6 16. Bc3 Ke7 17. Rhd1 Rhd8 18. Bxf6+ Kxf6 19. Nc3 c6 20. g4 a6 21. Kf3 { Despontin,L (2366)-Truyens,A (2312) ICCF 2019 1-0 (73)}) 10. Be3 f5 11. Bd4 { 1-0 (11) Kutlu,H (2146)-Nett,P (2215) ICCF 2017}) 8. O-O Bg7 (8... Nf6 9. f4 Bxf4 10. Bxf4 Nxe4 11. Qd4 Nf6 12. Bg5 c5 13. Qe3+ Kf8 14. Bxf6 {1-0 (14) Höppenstein,M (2355)-Pope,P (1574) ICCF 2016}) 9. Nc3 Ne7 10. Bg5 O-O 11. c5 Be6 12. cxd6 cxd6 13. Qd2 a6 14. Rfd1 Re8 15. Qxd6 Qxd6 16. Rxd6 Nc8 { Zavrazhnov,A (2233)-Baroin,B (2213) ICCF 2015 1/2-1/2 (58)}) (5. Be2 Nxd4 6. Nxd4 exd4 7. Bf4 d3 8. Qxd3 Bxb2 9. O-O Bxa1 10. Nd2 Bg7 11. Rb1 Ne7 12. Nb3 O-O 13. Bg5 f6 14. Be3 b6 15. Nd4 Bb7 16. Bf4 c5 {Grønbech,T (1731)-Pardoe,I (1484) ICCF 2018 0-1 (25)}) 5... f6 (5... Bf6 6. Be3 (6. Bxf6 Nxf6 7. d5 Nb8 8. Nc3 d6 9. Be2 Bg4 10. O-O Bxf3 11. Bxf3 O-O 12. Qb3 Qc8 13. Qc2 a5 14. Rfd1 Na6 15. a3 Kg7 16. h3 Qd7 17. Rab1 Rfd8 {Albesa,A (1937)-Keber,E (2187) ICCF 2013 0-1}) 6... exd4 7. Nxd4 d6 8. Nc3 Nge7 9. Be2 O-O 10. O-O Nxd4 11. Bxd4 Nc6 12. Bxf6 Qxf6 13. Nd5 (13. Qd2 Qd4 (13... Nd4 14. Nd5 Nxe2+ 15. Qxe2 Qd8 16. Rfd1 Be6 17. Rac1 Rc8 18. Qe3 a5 19. Qb3 b6 20. f3 Qg5 21. f4 Qh4 22. g3 Qd8 23. Qd3 Re8 {1/2-1/2 (23) Galjé,H (2287)-Serovey,M (1866) ICCF 2012}) 14. Rad1 Qxd2 15. Rxd2 Be6 16. f4 f5 17. exf5 Bxf5 18. Nb5 Rf7 19. c5 d5 20. Rxd5 Be6 21. Rd2 Bxa2 22. Ra1 Be6 23. Bf3 a6 24. g3 Kg7 {Williams,T (2372)-Schmidt,L (2389) ICCF 2014 1-0 (45)}) 13... Qxb2 14. Nxc7 Rb8 15. Re1 Rd8 16. Rb1 Qxa2 17. Nd5 { Cannon,A (2180)-Jefferson,N (2240) ICCF 2019 1/2-1/2 (28)}) (5... Nge7 6. dxe5 Nxe5 7. Nxe5 Bxe5 8. Nc3 h6 9. Be3 f5 10. c5 c6 11. Bd4 Qc7 12. Bxe5 Qxe5 13. Qd6 Qxd6 14. cxd6 Ng8 15. exf5 g5 16. Ne4 b5 17. f6 {Dolganiuc,V (2091) -Zimmermann,J (1575) ICCF 2011 1-0}) 6. Be3 d6 (6... exd4 7. Nxd4 Nh6 8. Nc3 O-O 9. c5 {1-0 (9) Krammel,J (1856)-Kourkoulos-Arditis,S ICCF 2016}) (6... Nh6 7. d5 Ne7 8. c5 d6 9. Bb5+ Bd7 10. Qb3 b6 11. cxd6 cxd6 12. Nc3 Nf7 13. Rc1 O-O 14. O-O Rc8 15. Qa4 Bxb5 16. Nxb5 Qd7 17. Nd2 f5 18. f3 {Schunck,F (2270) -Augustin,H (2329) ICCF 2015 1-0 (58)}) 7. d5 Nce7 8. Nc3 (8. c5 Bh6 9. Qd2 Bxe3 10. Qxe3 f5 11. Bb5+ Bd7 12. Qb3 Nf6 13. Nc3 Nxe4 14. Nxe4 fxe4 15. Ng5 O-O 16. Bxd7 Qxd7 17. O-O b6 18. c6 Qg4 19. Ne6 Rfc8 {Adam,C (2313)-Truyens,A (2264) ICCF 2007 1-0 (44)}) 8... f5 (8... Nh6 9. Bd3 Bg4 10. h3 Bxf3 11. Qxf3 O-O 12. h4 f5 13. h5 f4 14. Bd2 g5 15. O-O-O c6 16. Kb1 g4 17. Qe2 f3 18. gxf3 gxf3 19. Qe3 Ng4 20. Qe1 {Hoffman,D-Roberts,S ICCF 2015 1-0 (33)}) 9. c5 f4 ( 9... Nf6 10. Qa4+ Bd7 11. Qb3 Qc8 12. Rc1 Qb8 13. Bb5 f4 14. cxd6 cxd6 15. Bxd7+ Nxd7 16. Nb5 fxe3 17. Nc7+ Kf7 18. Ng5+ Kg8 19. fxe3 Qc8 20. O-O Rb8 21. Nf7 {Santus,U (1871)-Thau,O (1771) ICCF 2019 1-0}) 10. Bd2 dxc5 11. Bb5+ c6 12. dxc6 Nxc6 13. Qb3 Bd7 14. O-O Nd4 15. Nxd4 cxd4 16. Nd5 {Lindberg,W (1912) -Pardoe,I (1643) ICCF 2017 1-0 (25)}) 5. d5 (5. b3 Bg4 6. Be2 Bxf3 7. Bxf3 Bxd4 {0-1 (7) Kuosmanen,K (2239)-Koskinen,E (2283) ICCF 2017}) (5. h3 e5 6. Be3 (6. d5 Nd4 7. Be3 Nxf3+ 8. Qxf3 Ne7 9. Bg5 O-O 10. Qd3 h6 11. Bd2 f5 12. Nc3 c6 13. Be2 cxd5 14. cxd5 Bd7 15. O-O Rc8 16. Rfc1 a6 17. Qe3 b5 {Grabner,J (2154) -Arnold,H (2286) ICCF 2012 1/2-1/2 (29)}) 6... exd4 7. Nxd4 Nf6 8. Nc3 O-O 9. Bd3 Nd7 10. Nxc6 bxc6 11. Qd2 Nc5 12. Bxc5 dxc5 13. Rd1 Qe7 14. O-O a5 15. f4 Bd4+ 16. Kh2 a4 {Paesschesoone,S (1824)-Malisevschi,C (1933) ICCF 2012 1/2-1/2 (30)}) 5... Ne5 (5... Nb8 6. Be2 (6. h3 c5 7. Bd3 b5 8. cxb5 a6 9. Nc3 Nf6 10. O-O O-O 11. Bd2 axb5 12. Bxb5 Ba6 13. Re1 Nfd7 14. Qb3 Qc7 15. Bxa6 Nxa6 16. Nb5 Qb7 17. a4 Nc7 {Hansen,K (2141)-Larsen,A (2164) ICCF 2008 1/2-1/2}) 6... Na6 7. O-O Nf6 8. Nc3 O-O 9. Qc2 c6 10. h3 cxd5 11. cxd5 Bd7 12. Be3 Rc8 13. Bxa6 Qc7 14. Bd3 b5 15. Qb3 Qb7 16. Nd4 a6 17. a4 {Saint Arnaud,P (1985) -Santamaría Navarro,F (1807) ICCF 2013 1-0 (57)}) 6. Nxe5 (6. Nc3 Nxf3+ 7. Qxf3 e5 8. Bd3 Nf6 9. O-O O-O 10. Bg5 h6 11. Be3 a5 12. c5 Ng4 13. cxd6 cxd6 14. Bd2 f5 15. Rac1 a4 16. exf5 gxf5 17. Bb5 Bd7 {Glukhovtsev,S (2131)-Arnold,H (2357) ICCF 2006 1/2-1/2 (35)}) (6. Be2 Nxf3+ 7. Bxf3 Nf6 8. Nc3 O-O 9. Be3 b6 10. O-O Nd7 11. Rc1 Bb7 12. Qd2 a5 13. Rfe1 Nc5 14. h4 e5 15. Bd1 f5 16. h5 f4 17. Bxc5 dxc5 {Wharrier,J (2364)-Arnold,H (2291) ICCF 2014 1/2-1/2 (30)}) 6... Bxe5 7. Bd3 (7. Be2 c6 (7... c5 8. O-O Nf6 (8... e6 9. Nc3 h6 10. Rb1 a5 11. Be3 Ne7 12. Qd2 Bg7 13. dxe6 Bxe6 14. Rfd1 Bxc3 15. Qxc3 Rh7 16. Bxc5 Nc8 17. Bxd6 Nxd6 18. c5 Rc8 19. Rxd6 Qc7 20. Rbd1 {Blumberg,D-Hayward,C ICCF 2020 1-0 (34)}) 9. Qc2 O-O 10. Nd2 Nd7 11. Nf3 Bg7 12. Bd2 Re8 13. Rad1 e6 14. dxe6 Rxe6 15. Rfe1 b6 16. Bg5 Qc7 17. Bf4 Bf8 18. Nd2 Bb7 19. Bg4 {Melander,B (2264)-Mozelius,P (2250) ICCF 2014 0-1 (43)}) (7... Bg7 8. Nc3 Nf6 9. Be3 O-O 10. Qd2 e6 11. Rd1 e5 12. Bg5 Qe8 13. h3 Kh8 14. g4 Ng8 15. Be3 f5 16. f3 Nf6 17. O-O b6 18. Kg2 Bd7 19. b3 {Chaika,L (2356)-Keber,E (2288) ICCF 2021 1/2-1/2 (54)}) 8. O-O Nf6 9. Qd3 (9. Qc2 O-O 10. Bh6 Re8 11. Be3 Ng4 12. Bxg4 Bxg4 13. Qd2 Bd7 (13... cxd5 14. cxd5 Rc8 15. Bd4 Bxd4 16. Qxd4 Qa5 17. Nc3 b5 18. a3 Rc4 19. Qe3 Bd7 20. Rfe1 Qc7 21. Rec1 Rc8 22. f3 a5 23. Ne2 Qb7 24. h4 b4 25. h5 {Baklanov,V (2403)-Arnold,H (2256) ICCF 2011 1/2-1/2 (31)}) 14. Bd4 Bxd4 15. Qxd4 Qa5 16. dxc6 Bxc6 17. b3 b5 {1/2-1/2 (17) Fister,B (2370)-Enescu,C (2344) ICCF 2011}) ( 9. Nc3 O-O 10. Qd3 Nd7 11. Bh6 Re8 12. Qd2 a5 13. Rad1 a4 14. f4 Bf6 15. Kh1 Qc7 16. e5 dxe5 17. f5 Qa5 18. Qe3 a3 19. b3 Nc5 20. fxg6 hxg6 {Qwarfort, F-Mozelius,P (2250) ICCF 2014 1-0 (36)}) 9... Qb6 (9... Nd7 10. Qc2 (10. Nc3 Nc5 11. Qc2 f5 12. Bh6 Qb6 13. exf5 Bxf5 14. Qd2 cxd5 15. cxd5 Rc8 16. Rad1 Kf7 17. Be3 a5 18. f4 Bf6 19. g4 Bd7 20. Kh1 h5 21. g5 Bxc3 {Tseng,W (2415) -Schmidt,L (2388) ICCF 2014 1-0 (91)}) 10... Bg7 11. Bd2 (11. Nc3 Nc5 12. Be3 O-O 13. b4 Nd7 14. Rab1 a5 15. b5 cxd5 16. cxd5 b6 17. Na4 Nc5 18. Rbd1 Qc7 19. f4 Bb7 20. Qc4 Rad8 21. Bf3 Rfe8 22. Nxc5 dxc5 {Siigur,J (2440)-Arnold,H (2273) ICCF 2017 1-0 (45)}) 11... cxd5 12. exd5 O-O 13. Bc3 Nf6 14. Bd4 Bf5 15. Qb3 a5 16. Nc3 Re8 17. Rfe1 Nd7 18. Bxg7 Kxg7 19. Qd1 h5 20. Bf1 Qb6 21. b3 {Siigur,J (2416)-Arnold,H (2291) ICCF 2014 1-0 (46)}) 10. Nc3 (10. Nd2 Nd7 11. Nb3 O-O 12. Be3 Qc7 13. Rab1 Bg7 14. Bd4 Bxd4 15. Qxd4 a5 16. Rfd1 a4 17. Nd2 Qb6 { 1/2-1/2 (17) Samadara,Y (2205)-Dzugan,P (2203) ICCF 2019}) 10... O-O 11. Rb1 Qa6 12. dxc6 Bxc3 13. cxb7 Bxb7 14. Qxc3 Nxe4 15. Qc2 Qc6 16. Bf3 d5 17. Re1 f5 18. c5 {1-0 (18) Toma,R (2219)-Dzugan,P (2203) ICCF 2019 Unusual replies to-1 d4}) (7. f4 Bg7 8. Nc3 e5 9. dxe6 Bxe6 10. Bd3 Ne7 11. O-O f5 12. exf5 Bxf5 13. Bxf5 Nxf5 14. Re1+ Kd7 15. g4 Nd4 16. Be3 c5 17. Nd5 Re8 18. Kg2 Qh4 {O'Keefe, M (1385)-Anderson,C ICCF 2017 1-0 (38)}) 7... Bg7 (7... c6 8. O-O Bg7 9. Nc3 Nf6 10. Be3 O-O 11. h3 Nd7 12. Rc1 Nc5 13. b4 Nxd3 14. Qxd3 f5 15. Qd2 Rf7 16. Rfe1 Qf8 17. exf5 Bxf5 18. a3 Qc8 {Morley,P (2198)-Scharf,N (2066) ICCF 2010 1-0 (47)}) (7... Nf6 8. Bc2 (8. Nc3 O-O 9. O-O c6 10. h3 Nd7 11. Bh6 (11. Be3 Nc5 12. Bc2 Bg7 13. Bd4 e5 14. Be3 cxd5 15. Nxd5 Ne6 16. Qd2 Bd7 17. Rad1 Bc6 18. Nb4 Nd4 19. Bb1 Rc8 20. b3 a5 21. Nc2 Ne6 22. f3 Re8 {Ilyasov,A (2267) -Arnold,H (2262) ICCF 2011 1/2-1/2 (27)}) 11... Re8 12. Qd2 Nc5 13. Rad1 Bd7 14. f4 Bf6 15. Bb1 cxd5 16. Nxd5 Bc6 17. e5 Bg7 18. f5 dxe5 19. Qe3 Nd7 { Malisevschi,C (2229)-Arnold,H (2246) ICCF 2017 1-0 (40)}) 8... Nh5 9. Nc3 Bxc3+ 10. bxc3 e5 11. dxe6 Bxe6 12. Bh6 Qf6 13. Ba4+ Ke7 14. Qd2 Qe5 15. O-O Nf6 16. f3 Qa5 17. Bc2 Nd7 18. Rab1 Bxc4 19. Rfe1 {Kubaský,A (2247)-Roy,R (2161) ICCF 2020 1-0 (43)}) 8. O-O Nf6 9. Nc3 O-O 10. h3 Nd7 11. Be3 Nc5 12. Bc2 b6 13. Qd2 e6 14. Rae1 a5 15. b3 Bd7 {Hammarström,U-Mozelius,P (2195) ICCF 2011 1/2-1/2 (30)}) 4... Nf6 5. e3 a6 6. d5 Na7 7. a4 a5 8. Bd3 d6 9. h3 b6 10. O-O O-O 11. e4 c6 12. Qe2 c5 13. e5 Nd7 14. exd6 exd6 15. Bg5 {Santamaría Navarro,F (1762) -Santamaría Quintana,I (1578) ICCF 2009 1-0 (26)}) (3... e6 4. e3 Ne7 5. Bd3 O-O 6. O-O Nbc6 7. Nc3 b6 8. Re1 Bb7 9. a3 d5 10. cxd5 Nxd5 11. Bd2 Nxc3 12. bxc3 Na5 13. e4 c5 14. Rb1 Qe7 15. a4 {Kepinski,J (1966)-Ticleanu,S (1885) ICCF 2012 1-0 (52)}) (3... h6 4. Nc3 e6 5. e4 d6 6. Be3 b6 7. Be2 Bb7 8. O-O a6 (8... Nd7 9. Qc2 Ne7 10. Rad1 a6 11. Qc1 c6 12. Bf4 Nc8 13. h3 Rb8 14. e5 d5 15. Bd3 Ne7 16. Rfe1 Rc8 17. Qd2 Kf8 18. b4 {1-0 (18) Belchev,B (2152) -Kaytazki,L (1525) ICCF 2020}) 9. d5 Bxc3 10. bxc3 Nd7 11. Qa4 Ngf6 12. Nd2 Qe7 13. Rab1 O-O-O 14. Qc2 Nc5 15. f3 {Secondi,A (1555)-Paulus,C ICCF 2013 0-1 (29) }) (3... d5 4. cxd5 Qxd5 5. Nc3 Qd7 (5... Qa5 6. Bd2 c5 7. e4 Nf6 8. Bb5+ Bd7 9. Bxd7+ Nbxd7 10. e5 Nh5 11. Ne4 Qb6 12. Qa4 cxd4 13. Rc1 f5 14. Neg5 h6 15. e6 {Woznica,M (2307)-Beranek,E (2011) ICCF 2019 1-0}) 6. e4 Nc6 7. d5 Ne5 8. Bf4 Nxf3+ 9. Qxf3 a6 10. Be2 e6 11. dxe6 fxe6 12. Rd1 Qc6 13. Rc1 Qb6 14. O-O Nf6 15. Na4 {Ronderos,L-Lansford,M (1603) ICCF 2013 1-0 (29)}) 4. d5 (4. e3 cxd4 (4... b6 5. g3 Bb7 6. Bg2 d5 7. cxd5 cxd4 8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Nxd4 Nc5 11. O-O Nf6 12. Nc3 O-O 13. Nc6 Bxc6 14. dxc6 Rac8 15. Nd5 Nxd5 { Enoksson,B (1574)-Kaytazki,L (1438) ICCF 2016 0-1 (62)}) 5. exd4 b6 (5... Nf6 6. Bg5 O-O 7. Be2 d5 8. Nc3 Be6 9. Bxf6 Bxf6 10. O-O dxc4 11. h3 Qc7 12. b3 cxb3 13. Qc1 Rc8 14. Qb2 Qxc3 15. Qxc3 Rxc3 16. axb3 Rxb3 17. Rfc1 {Hardwick,M (1351)-Burrows,G ICCF 2014 0-1}) 6. Be3 Bb7 7. Nbd2 Nf6 8. Be2 O-O 9. h3 d5 10. O-O dxc4 11. Nxc4 Nc6 12. Rc1 Nd5 13. Qd2 Nxe3 14. fxe3 Rc8 15. d5 Nb8 { Mason,B (1749)-Wilson,G (1882) ICCF 2014 0-1 (45)}) 4... f5 (4... d6 5. e4 Nd7 (5... Bg4 6. Be2 Bxf3 7. Bxf3 Bd4 8. Nc3 (8. O-O Nd7 9. Na3 Ngf6 10. Nc2 Qb6 ( 10... Be5 11. Qd3 O-O 12. Be2 Ne8 13. Rb1 a6 14. b3 b5 15. f4 Bg7 16. Bd2 b4 17. Bf3 Qc7 {1/2-1/2 (17) Senzacqua,F (1980)-Lagergren,H (1980) ICCF 2019}) 11. Nxd4 cxd4 12. a4 a5 13. Ra3 Ne5 14. Rb3 Qc5 15. Be2 Qa7 16. c5 Qxc5 17. Bb5+ Kd8 18. Re1 Rc8 19. Bf1 d3 {Versteeg,A-Lagergren,H (1775) ICCF 2020 1-0 (53)}) 8... Nf6 {0-1 (8) Oraev,R-Turaga,M ICCF 2013}) (5... Qb6 6. Qc2 (6. Nc3 Bg4 7. Qa4+ Nd7 8. Ng1 Bh5 9. Qb3 h6 10. h4 Qxb3 11. axb3 Ne5 12. f3 f5 13. exf5 gxf5 14. Nh3 Kd7 15. Nf4 Bf7 16. h5 a6 17. Be3 {Zlotkowski,A (2368)-Szymanski,R (2385) ICCF 2013 1/2-1/2 (47)}) 6... f5 7. Bd3 Bd7 8. Nc3 e5 9. dxe6 Bxe6 10. exf5 gxf5 11. Bxf5 Bxf5 12. Qxf5 Ne7 13. Qe6 Qc6 14. Nb5 Be5 15. Bg5 Qe4+ 16. Kf1 Qd3+ 17. Kg1 {Georgiev,N (1901)-Kaytazki,L (1463) ICCF 2016 1-0}) (5... Nh6 6. Qc2 O-O 7. Nc3 Nd7 8. g3 a6 9. a4 f5 10. Bg2 fxe4 11. Nxe4 Nf5 12. O-O Nd4 13. Nxd4 Bxd4 14. Bh6 Re8 15. Ng5 Ne5 16. Ne6 Bxe6 17. dxe6 {Evans,N-Wilson,G (1882) ICCF 2015 0-1 (28)}) 6. Be2 (6. Bd2 Bxb2 7. Nc3 Bxa1 8. Qxa1 Ne5 9. Nxe5 dxe5 10. Be2 e6 11. Na4 Qc7 12. f4 Nf6 13. Nxc5 exd5 14. cxd5 Qxc5 15. Qxe5+ Qe7 16. Bc3 Qxe5 17. Bxe5 Nxd5 {Pronovost,D (1741)-Hayward,C ICCF 2015 1-0 (48) }) (6. Bd3 Ne5 (6... Qa5+ 7. Bd2 Qb6 8. Nc3 Qxb2 9. Rb1 Qa3 10. O-O Qa5 11. Qe1 Ngf6 12. e5 dxe5 13. Nxe5 Nxe5 14. Qxe5 Nh5 15. Qe1 O-O 16. h3 e5 17. Qe3 { Grabarchuk,N (2235)-Vieth,M (1967) ICCF 2011 1/2-1/2 (55)}) 7. Nxe5 Bxe5 8. O-O Nf6 9. Qb3 Qb6 10. Qxb6 axb6 11. f3 Bd4+ 12. Kh1 Nd7 13. f4 g5 14. Nc3 gxf4 15. Nb5 O-O {MacGregor,C (1747)-Pooley,M (1926) ICCF 2008 1/2-1/2 (48)}) 6... Ne5 7. Nxe5 Bxe5 8. f4 Bd4 9. Nc3 Bd7 10. Qb3 Qb6 11. Qxb6 axb6 12. Kd2 e5 { 1/2-1/2 (12) Mões Joaquim,C (1793)-Vieth,M (1967) ICCF 2011}) (4... Qa5+ 5. Bd2 Qb6 6. Nc3 f5 7. Na4 Qc7 8. g3 d6 9. Bg2 Nd7 10. Ng5 Nf8 11. Nc3 Bd7 12. O-O Nh6 13. a4 Ng4 14. Qc2 h6 15. Nf3 Nh7 16. Nh4 {Budin,F (1990)-Fermen,G (1804) ICCF 2011 1-0 (28)}) (4... b5 5. cxb5 a6 6. Qa4 f5 7. e3 Nf6 8. Nc3 O-O 9. Bd2 Qb6 10. Ne5 d6 11. Nc4 Qb7 12. Na5 axb5 13. Nxb5 Bd7 14. Qa3 Qc8 15. f3 Kh8 16. Qb3 {Sodomski,A (2006)-Hering,H ICCF 2011 0-1 (48)}) 5. g3 d6 6. Bg2 Qb6 7. Qc2 Qb4+ (7... Nf6 8. Nc3 O-O 9. O-O Na6 10. a3 Bd7 11. Rb1 Rac8 12. b3 Nc7 13. Bb2 Qa6 14. a4 Qa5 15. Ng5 Na6 16. e3 {Johansson,B (2332)-Mondry,M (2140) ICCF 2010 1-0 (36)}) 8. Nbd2 (8. Nfd2 Nd7 9. O-O Ngf6 10. a4 Ne5 11. a5 b5 12. axb6 Qxb6 13. Nc3 Rb8 14. b3 O-O 15. Bb2 a6 16. e3 e6 17. Rfe1 Re8 18. f4 Nf7 19. dxe6 Bxe6 {Kaufmann,P (2274)-Moza,M (2246) ICCF 2011 1/2-1/2 (32)}) 8... Nf6 9. O-O O-O 10. Ng5 Qb6 11. e4 Na6 12. Bh3 fxe4 13. Be6+ {Wukits,R (2313)-Moza,M (2246) ICCF 2011 1-0 (29)}) (1... f5 2. c4 (2. Bf4 e6 3. Nc3 (3. a3 Nf6 4. c4 Be7 5. e3 O-O 6. Nc3 b6 7. h4 Bb7 8. Nh3 d6 9. Ng5 Qd7 10. Bd3 h6 11. d5 e5 12. Ne6 exf4 13. Bxf5 fxe3 14. O-O Bc8 {Lund,S (2072)-Targonski,S (2007) ICCF 2019 1-0 (35)}) (3. h3 Nf6 4. Nd2 Be7 5. Ngf3 O-O 6. e3 d6 7. Bd3 a5 8. a3 Qe8 9. c4 Nbd7 10. b4 b6 11. O-O Bb7 12. Ng5 Bd8 13. Qc2 Qg6 14. g4 Nxg4 {Metz,E-Acosta, E (1585) ICCF 2015 0-1}) 3... Bb4 (3... Nf6 4. Nb5 d6 5. Nf3 Be7 6. g3 Nc6 7. Bg2 Ne4 8. d5 a6 9. Na3 exd5 10. Nd4 Bg5 11. Nxc6 bxc6 12. Bxg5 Qxg5 13. f3 Nc5 14. f4 Qf6 15. c3 {Giessing,K (1520)-Ooka,K (1510) ICCF 2016 0-1 (42)}) 4. Qd3 (4. e3 d6 5. Nge2 h6 6. a3 Bxc3+ 7. Nxc3 Nf6 8. Be2 Qe7 9. O-O g5 10. Bg3 a6 11. b4 h5 12. h4 g4 13. Qc1 b6 14. Qb1 Nbd7 15. Bc4 Bb7 {Ohera,D (1938)-Krett, V (1671) ICCF 2014 1/2-1/2 (45)}) 4... d5 5. Qg3 Bd6 6. Bxd6 g6 7. Bxc7 Qd7 8. Bxb8 Nf6 9. Be5 Qe7 10. Nf3 O-O 11. Bd6 {1-0 (11) Fazio,C-Micera,L ICCF 2018}) (2. f4 Nf6 3. e3 g6 4. Bd3 Bg7 5. Nf3 O-O 6. O-O d6 7. Nc3 Nbd7 8. Ng5 Nb6 9. b3 h6 10. Nh3 c6 11. Rf3 Nh5 12. Qe2 a5 13. a4 e5 {White,R (1564)-Ash,G (1772) ICCF 2016 0-1 (39)}) 2... Nf6 3. Nc3 e6 4. Qc2 (4. Bg5 Bb4 5. Qc2 b6 6. e3 Bb7 7. Nf3 O-O 8. Be2 d6 9. O-O Bxc3 10. bxc3 Nbd7 11. Rab1 Qe8 12. c5 Be4 13. Bd3 Bxf3 14. gxf3 Qg6 15. h4 h6 {Hardwick,M (1429)-Brotherton,T (2108) ICCF 2013 0-1}) 4... b6 5. e3 Bb7 6. f3 (6. Nf3 Ne4 (6... g6 7. b3 (7. Be2 Bg7 8. b4 O-O 9. Bb2 Nc6 10. a3 Qe7 11. O-O Nd8 12. Rfd1 Nf7 13. Ne5 Nxe5 14. dxe5 Ne4 15. Nxe4 Bxe4 16. Qb3 a5 17. b5 a4 18. Qc3 Rad8 {Löffler,W (2354)-Arnold,G (2254) ICCF 2016 1/2-1/2 (56)}) 7... Bg7 8. Bb2 O-O 9. Rd1 Qe7 10. Be2 Ne4 11. O-O d6 12. d5 Nxc3 13. Bxc3 Bxc3 14. Qxc3 e5 15. Nd2 Nd7 16. Nb1 Nf6 17. Qb2 h5 18. Nc3 {Jahn,P (2204)-Andersen,J (2303) ICCF 2016 1/2-1/2 (40)}) 7. a3 Nxc3 (7... Be7 8. Be2 O-O 9. O-O d6 (9... Bf6 10. Bd2 Qe7 11. Rad1 d6 12. d5 Nxc3 13. Bxc3 Bxc3 14. Qxc3 e5 15. Nd2 Nd7 16. e4 f4 {Cook,P (1555)-Gaujens,A (2222) ICCF 2011 0-1 (45)}) 10. Nd2 Nxc3 11. Qxc3 Nd7 12. Nf3 Bf6 13. Qb3 c5 14. Rd1 Qe7 15. h3 Rfd8 16. Bd2 Rac8 17. Bc3 d5 18. cxd5 Bxd5 19. Qc2 {Grönroos,J (1859) -Rånby,H (1859) ICCF 2017 0-1 (64)}) 8. Qxc3 Be7 9. Be2 a5 10. O-O a4 11. Bd2 O-O 12. Qc2 d6 13. Bc3 Qe8 14. b4 axb3 15. Qxb3 Nd7 16. a4 Rb8 17. Qc2 Be4 { Blake,M (2199)-Koval,V (2124) ICCF 2016 0-1 (53)}) 6... c5 (6... Bd6 7. Bd3 c5 8. a3 Nc6 9. Nge2 O-O 10. b3 Qb8 11. Bb2 cxd4 12. exd4 Ne7 13. h4 a6 14. h5 h6 15. Bc1 Bh2 16. Be3 Nxh5 17. Na4 Nc8 18. Qd2 {Hauff,A (2354)-Anikeev,V (2267) ICCF 2015 1/2-1/2 (61)}) 7. d5 Na6 (7... Bd6 8. Bd3 exd5 9. cxd5 Nxd5 10. Nxd5 Bxd5 11. Bxf5 Nc6 12. Bg6+ hxg6 13. Qxg6+ Ke7 14. e4 Bf7 15. Bg5+ Ke8 16. Qxg7 Rh7 17. Qxh7 Qxg5 18. Kf2 Nd4 19. Rd1 {Avery,B (1711)-Munoz,L (1956) ICCF 2018 0-1 (27)}) 8. a3 Nc7 9. e4 Bd6 10. Bg5 h6 11. Bh4 Qe7 12. O-O-O g5 13. Bg3 { Standke,W (2489)-Poljak,D (2439) ICCF 2016 1-0}) (1... c6 2. c4 (2. Bf4 Qb6 ( 2... Nf6 3. e3 d6 4. h3 Nbd7 5. Nf3 Qb6 6. Qc1 g6 7. Nbd2 Bg7 8. c3 O-O 9. Bd3 Qc7 10. O-O b6 11. Re1 Re8 12. Qc2 Bb7 13. Rac1 c5 14. Qb3 {Cipka,I (2369) -Kreutz,J (2206) ICCF 2010 0-1 (50)}) 3. Nf3 (3. b3 Nf6 4. e3 d5 5. Bd3 Bg4 6. Qd2 e6 7. f3 Bh5 8. Nc3 Bg6 9. Nge2 Nbd7 10. O-O Bb4 11. a3 Be7 12. Na4 Qd8 13. Bg3 O-O 14. c4 Re8 {Stubbs,M (2086)-Novosad,M (2012) ICCF 2021 1/2-1/2 (25)}) 3... Nf6 4. Nbd2 (4. Qc1 d6 5. a4 Bf5 6. a5 Qc7 7. h3 c5 8. g4 Bd7 9. dxc5 Qxc5 10. Bg2 h6 11. c4 Qc8 12. Be3 Na6 13. O-O g6 14. Ra3 Bg7 15. Nd4 Bc6 { Ackermann,E (2329)-Tkachenko,Y (2323) ICCF 2018 1-0 (62)}) 4... Nh5 5. Bg5 h6 6. Nc4 Qc7 7. Bd2 {1/2-1/2 (7) Dobroruka,V (1953)-Marks,D (1956) ICCF 2020}) ( 2. Nf3 h6 (2... b5 3. e4 a5 4. Bd3 Qc7 5. O-O Nf6 6. e5 g5 7. exf6 exf6 8. Re1+ Kd8 9. Nxg5 fxg5 10. Bxg5+ Be7 11. Bxe7+ Ke8 12. Bg5+ Kf8 13. Bh6+ Kg8 14. Re8# {Purwadijaya,N (1785)-Marpaung,N ICCF 2019 1-0}) (2... f6 3. e4 g5 (3... d5 4. e5 fxe5 5. Nxe5 Nf6 6. Be2 Qc7 7. Nc3 Na6 8. Bf4 Qb6 9. Na4 Qa5+ 10. Nc3 Nc7 11. O-O g6 12. Qd3 Bf5 13. Qe3 Bxc2 14. Ng4 Kd8 15. Qe5 {Cviková,K-Ziman,S ICCF 2009 0-1 (46)}) 4. Nxg5 h5 5. Be2 h4 6. Bh5+ Rxh5 7. Qxh5# {1-0 (7) Roy Laguens,A (1947)-Gorlevsky,A ICCF 2011}) 3. e4 d5 (3... d6 4. Nc3 e6 5. Bd3 g5 6. Be3 g4 7. Nd2 e5 8. O-O Be7 9. f4 exf4 10. Bxf4 Bg5 11. Qe2 Bxf4 12. Rxf4 h5 13. Raf1 Nh6 14. Bc4 Rh7 15. Rf6 {Ménétrier,M (2553)-Christmann,F ICCF 2014 1-0 (26)}) 4. e5 Bg4 5. Be2 e6 6. O-O Ne7 7. Nbd2 Ng6 8. h3 Bxf3 9. Nxf3 Be7 10. Bd3 Nh4 11. Nxh4 Bxh4 12. Qg4 g6 13. Bxg6 fxg6 {Orolin,J (1899)-Zibrita,P ICCF 2010 1-0 (26)}) (2. e3 b5 (2... Qc7 3. b3 g6 4. Bb2 h6 5. c4 h5 6. Bd3 Bh6 7. d5 Nf6 8. Qf3 d6 9. Bxf6 exf6 10. Qxf6 Rg8 11. Be4 Bg7 12. Qg5 Bxa1 13. Nf3 Qe7 14. Qxe7+ {Richards,M (1541)-Ipekyilmaz,E (1530) ICCF 2016 0-1 (33)}) (2... Nf6 3. Nc3 d5 4. Nf3 Bf5 5. Bd3 e6 6. Bxf5 exf5 7. a3 Bd6 8. Ne5 Bxe5 9. dxe5 Nfd7 10. O-O Nxe5 11. f4 Ng4 12. Re1 Nd7 13. h3 Ngf6 14. g3 {Santamaría Quintana,I (1481)-Costa Trillo,V (1643) ICCF 2010 0-1 (30)}) 3. c4 b4 4. a3 Qa5 5. Bd2 Qc7 6. Bxb4 a5 7. Bc3 d6 8. b4 a4 9. Bd3 Nf6 10. Nf3 Bg4 11. Nbd2 Bxf3 12. Qxf3 Nbd7 13. h3 e6 {Miedema,H (809)-Vaessen,J (1194) ICCF 2020 1/2-1/2}) ( 2. Nd2 d6 3. Ngf3 Nd7 4. e4 g6 5. Bd3 Bg7 6. O-O Qc7 7. Re1 e5 8. c3 Ne7 9. Nc4 f6 10. dxe5 Nxe5 11. Bf1 Nxc4 12. Bxc4 Bd7 13. Bf4 Nc8 {Blondel,F (1695) -Humbert,P (1058) ICCF 2020 1-0}) (2. Bd2 Nf6 3. Nf3 e6 4. e3 d5 5. h3 Nbd7 6. Bd3 c5 7. b3 b6 8. c4 dxc4 9. bxc4 Bb7 10. Nc3 Bd6 11. Qb3 cxd4 12. exd4 Bxf3 13. gxf3 O-O {Walters,B (1741)-Kikot,V ICCF 2020 0-1 (33)}) (2. Qd3 d5 3. e4 Qa5+ 4. Bd2 Qc7 5. exd5 cxd5 6. Nf3 g6 7. Nc3 Qb6 8. Qb5+ Qxb5 9. Bxb5+ Bd7 10. Bxd7+ Nxd7 11. Nxd5 Rc8 12. Bc3 e6 13. Nb4 f6 {Hardwick,M (1181)-Singh,A ICCF 2019 1-0 (32)}) 2... c5 (2... h6 3. Nc3 (3. e4 e6 4. Nc3 a5 5. Nf3 Bb4 6. Bd3 d5 7. a3 Bxc3+ 8. bxc3 dxe4 9. Bxe4 Nf6 10. Bd3 O-O 11. O-O a4 12. Bf4 Nbd7 13. h3 c5 14. Ne5 cxd4 {Rojas,Y-Reyes,S ICCF 2018 0-1}) 3... Nf6 (3... d6 4. Nf3 e6 5. e3 Be7 6. Bd3 g6 7. O-O Nf6 8. b4 O-O 9. a4 Nh5 10. c5 d5 11. Ne5 Bf6 12. Bxg6 Ng7 13. Bc2 Nf5 14. Qg4+ Bg5 15. f4 {Secondi,A (1582)-Ekelund,B ICCF 2017 1-0 (26)}) 4. e4 d6 5. Nf3 Bg4 6. Be3 e6 7. Be2 Be7 8. h3 Bh5 9. O-O Nbd7 10. e5 Nh7 11. exd6 Bxd6 12. d5 cxd5 13. cxd5 e5 14. Ne4 {Casás,E (2330)-Gallo,E ICCF 2009 1-0}) (2... Qa5+ 3. Nc3 Na6 4. Bd2 Nf6 5. Nf3 h5 6. e3 Rh6 7. e4 Rg6 8. e5 Ng4 9. h3 Nh6 10. Bd3 Rxg2 11. Kf1 Nb4 12. Kxg2 Nxd3 13. Qc2 Nb4 { 0-1 (13) Gesang,C-Marpaung,N ICCF 2019}) (2... g6 3. Nc3 b6 4. e4 e6 5. f4 h6 6. Nf3 d6 7. e5 f6 {0-1 (7) Joslin,K (1651)-Cottrell,J (1684) ICCF 2017}) 3. d5 e6 4. e4 exd5 5. cxd5 d6 6. Nc3 a6 (6... Nd7 7. Nf3 a6 8. a4 Ne5 9. Nxe5 dxe5 10. Bc4 Bd6 11. O-O Ne7 12. Bg5 h6 13. Bh4 Qc7 14. f3 b6 15. Bf2 Ng6 16. Qc2 Qe7 17. Ne2 Rb8 18. Qd3 {Davis,J (1481)-Ipekyilmaz,E (1764) ICCF 2017 0-1 (32)} ) 7. a4 Nf6 8. f4 Qe7 9. Qe2 h6 10. e5 Nh7 11. h4 Bf5 12. g4 Bc8 13. Bd2 { Pastor Cutillas,A-Ipekyilmaz,E (1686) ICCF 2018 1-0 (35)}) (1... Nf6 2. e3 (2. c4 e6 (2... d6 3. Nf3 g6 4. e3 Bg7 5. c5 (5. Bd3 Bg4 (5... e6 6. Nc3 O-O 7. Qc2 e5 8. d5 Bg4 9. Ne4 Nxe4 10. Bxe4 f5 11. h3 fxe4 12. Qxe4 Bf5 13. Qh4 Bf6 14. Qg3 e4 15. Nh4 Bxh4 16. Qh2 Nd7 17. Rb1 {Richards,M (1483)-Burmeister,F (2249) ICCF 2017 0-1 (25)}) (5... e5 6. dxe5 dxe5 7. e4 Nc6 8. O-O Bg4 9. h3 Bxf3 10. Qxf3 O-O 11. a3 Nh5 12. b4 Nf4 13. Bxf4 exf4 14. Ra2 Ne5 15. Qd1 Qxd3 16. Rd2 Qxe4 17. Re1 {Lanca,L (1501)-Jarecki,M (2173) ICCF 2018 0-1 (32)}) (5... Nbd7 6. O-O e5 7. dxe5 dxe5 8. Nfd2 O-O 9. b4 c5 10. Ba3 b6 11. b5 Bb7 12. Nc3 Qc7 13. Nce4 Nxe4 14. Nxe4 Nf6 15. Nxf6+ Bxf6 16. f3 e4 17. Rb1 {Roberts,R (1467) -Davis,J (1502) ICCF 2013 0-1 (44)}) 6. Nbd2 O-O 7. O-O Nc6 8. h3 Be6 9. d5 Nb4 10. dxe6 Nxd3 11. exf7+ Rxf7 12. Qe2 Nb4 13. Nb3 Ne4 14. Bd2 Bxb2 15. Rae1 Nxa2 16. Bc1 Bg7 {Benson,K-Leber,D (1511) ICCF 2016 1-0 (65)}) (5. h3 O-O 6. Bd3 (6. Be2 Nbd7 7. O-O e5 8. Nc3 Re8 9. Qc2 c6 10. dxe5 Nxe5 11. Nxe5 dxe5 12. Rd1 Qc7 13. b3 Bf8 14. e4 Nd7 15. Rb1 Nc5 16. Be3 Ne6 17. Qb2 Bc5 {Iñiguez,M (2309) -Arancibia Guzmán,E (2471) ICCF 2011 1/2-1/2}) 6... Nbd7 7. O-O e5 8. Nc3 Re8 9. Bc2 Nh5 10. e4 Nf4 11. d5 Nb6 12. b3 f5 13. Bxf4 exf4 14. Qd2 Qf6 15. Nb5 fxe4 16. Rae1 Bf5 {Galmés Diaz-Plaja,A-Ananian,A ICCF 2012 1/2-1/2}) 5... dxc5 6. Bc4 cxd4 7. Bxf7+ Kxf7 8. O-O c5 9. Ng5+ Kf8 10. Qb3 Qd5 11. e4 Qxb3 12. axb3 h6 13. e5 hxg5 14. Bxg5 {Towery,B (1673)-Guimera Manjon,A ICCF 2019 0-1}) 3. a3 (3. Nc3 Bb4 4. Bd2 a5 5. a3 (5. e4 d5 6. e5 Ne4 7. Qg4 Nxd2 8. Qxg7 Rf8 9. Kxd2 c5 10. a3 cxd4 11. axb4 dxc3+ 12. bxc3 dxc4+ 13. Kc1 b5 14. Nf3 Bb7 15. Nd4 Qb6 16. Qxh7 axb4 {Panugaling,R (1738)-Huff,D (1773) ICCF 2020 0-1 (26)}) 5... Bxc3 6. Bxc3 d5 7. e3 O-O 8. Nf3 b6 9. Bd3 Ba6 10. cxd5 Bxd3 11. Qxd3 exd5 12. Rc1 Qd6 13. O-O Ne4 14. Ne5 f6 {Lucena Cifré,R (1622)-Valencia Ciordia,J (1670) ICCF 2016 1/2-1/2 (61)}) (3. g3 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 O-O 6. Bg2 d6 7. Nf3 Nc6 8. Nc3 e5 9. d5 Nb8 10. O-O a5 11. e4 (11. Ne1 Re8 12. e4 Na6 13. Rd1 Nc5 14. b3 h6 15. f3 Qe7 16. Nc2 Bd7 17. Ne3 Nh7 18. h4 Qd8 19. Kh2 Qc8 20. Rde1 Nf6 21. Ncd1 b5 22. cxb5 Bxb5 {Pommrich,R (2265)-Milanollo,M (2305) ICCF 2014 1-0 (56)}) 11... Na6 12. Ne1 Nc5 13. Qe2 h5 14. Nd3 Nxd3 {Addis,E (2030) -Buchaillot,L (2152) ICCF 2015 0-1 (48)}) 3... b6 4. Nc3 Bb7 5. Bf4 (5. Bg5 Be7 (5... h6 6. Bxf6 Qxf6 7. e4 Qg6 8. f3 Be7 9. Nge2 O-O 10. g3 {1-0 (10) Bennewitz,B (1977)-Dinerchtein,V ICCF 2009}) 6. e3 (6. Bf4 O-O 7. h3 Ne4 8. Nxe4 Bxe4 9. e3 d6 10. Nf3 Nd7 11. Bd3 f5 12. O-O g5 13. Bg3 Qe8 14. Bxe4 fxe4 15. Nd2 Qg6 16. Qg4 Kg7 17. Nxe4 h5 {Pomeroy,R (1726)-Waud,D (2039) ICCF 2018 0-1 (39)}) (6. Bxf6 Bxf6 7. e4 d6 8. Nf3 O-O 9. Bd3 Nc6 10. d5 exd5 11. cxd5 Ne5 12. O-O Nxd3 13. Qxd3 Re8 14. Nd4 a5 15. Rae1 Bxd4 16. Qxd4 Ba6 17. Re3 Bxf1 {Gosling,D (1234)-Kent,C (1472) ICCF 2020 0-1 (59)}) 6... Ne4 (6... h6 7. Bh4 O-O 8. Nf3 d6 9. Bd3 Nbd7 10. O-O Nh5 11. Bxe7 Qxe7 12. Re1 c5 13. Qe2 Nhf6 14. Rad1 Rad8 15. Bc2 cxd4 16. Rxd4 {Blondel,F (1919)-Coope,D (2094) ICCF 2011 1/2-1/2 (44)}) 7. Bxe7 Qxe7 8. Qc2 Nxc3 9. Qxc3 Qg5 10. f3 d5 11. cxd5 Bxd5 12. O-O-O c6 13. Nh3 Qh6 14. Nf4 Nd7 15. Kb1 O-O 16. Nxd5 exd5 {Acebo,B-Ruswick,D ICCF 2009 1-0 (36)}) (5. e3 d6 (5... Be7 6. Bd3 Bxg2 7. f3 Bxh1 8. Qe2 d5 9. Nh3 Nbd7 10. Qf1 O-O 11. Qxh1 c5 12. Qg2 dxc4 13. Bxc4 Qc7 14. Bd2 cxd4 15. exd4 Qxc4 16. Bh6 Ne8 17. O-O-O {Gosling,D (1429)-Dixon,R (1958) ICCF 2017 0-1 (33)}) 6. Nf3 Nbd7 (6... Be7 7. Be2 O-O 8. d5 e5 9. Qc2 Nbd7 10. e4 a6 11. b4 Rb8 12. h3 Qc8 13. Bg5 h6 14. Bh4 Qd8 15. g4 Nh7 16. Bxe7 Qxe7 17. Qd2 Ng5 18. Nxg5 {González Solé,F (1701)-Reyes Cortés,R (1592) ICCF 2013 1/2-1/2}) 7. Be2 Be7 8. O-O c5 9. d5 O-O 10. e4 Ng4 11. h3 Nge5 12. Nh2 exd5 13. cxd5 f5 14. exf5 Rxf5 15. Ng4 a6 16. f4 Ng6 {Jatmiko,T-Prawira,B ICCF 2017 1/2-1/2 (39)}) ( 5. f3 d5 6. Bg5 Be7 7. e3 O-O 8. Bd3 dxc4 9. Bxc4 Ng4 10. Bf4 Bd6 11. Qd3 Bxf4 12. exf4 Qh4+ 13. g3 Qe7 14. Nh3 Nf6 15. Bb3 c5 16. O-O-O cxd4 {Yüzer,G-Anand, A (2025) ICCF 2010 0-1 (31)}) 5... a6 (5... Be7 6. e3 O-O 7. Bd3 c5 8. f3 Nh5 9. d5 Nxf4 10. exf4 exd5 11. Nxd5 b5 12. Be4 bxc4 13. Ne2 Nc6 14. O-O Rb8 15. Qa4 Bh4 16. Qxc4 Na5 17. Qc2 {Vera-Cruz,R-Lopes,D ICCF 2010 0-1 (36)}) (5... Nh5 6. Be3 Nf6 7. Nf3 d5 8. cxd5 Nxd5 9. Nxd5 Qxd5 10. Qa4+ Nc6 11. g3 O-O-O 12. Bg2 Qa5+ 13. Qxa5 Nxa5 14. O-O Nc4 15. Rfc1 Nxe3 16. fxe3 f6 17. Rc2 { Dreisch,J (2031)-Arufe Vázquez,J (1963) ICCF 2017 1-0}) (5... d5 6. e3 dxc4 7. Nf3 Nd5 8. Bxc4 Nxf4 9. exf4 Bd6 10. d5 exd5 11. Bxd5 Bxd5 12. Qxd5 Nd7 13. O-O O-O 14. g3 Nf6 15. Qc6 a6 16. Rfe1 Re8 {Ovcharenko,L-Jaeger,F (2094) ICCF 2009 1/2-1/2 (56)}) 6. e3 (6. f3 g6 7. e4 d6 8. Bd3 Bg7 9. Nge2 O-O 10. Qc2 Re8 11. e5 dxe5 12. Bxe5 Nbd7 13. Rd1 Nxe5 14. dxe5 Nd7 15. O-O Bxe5 16. Ne4 Nf6 17. b4 Qe7 {Vera-Cruz,R-Fortes,J ICCF 2010 1-0}) 6... Be7 7. Qc2 d6 8. Nge2 Nbd7 9. O-O-O O-O 10. f3 Re8 11. e4 e5 12. dxe5 dxe5 13. Bxe5 Nxe5 {Amuso,J-DuCharme,S ICCF 2012 1-0 (27)}) 2... g6 3. Nc3 Bg7 4. Bc4 O-O 5. Nf3 d6 6. O-O Nbd7 (6... d5 7. Bd3 Be6 8. Ne5 Nbd7 9. e4 Nxe5 10. dxe5 Nxe4 11. Nxe4 dxe4 12. Bxe4 c6 13. Bf4 Qc7 14. Qd4 Rfd8 15. Qc3 Rd7 16. b3 Rad8 17. a4 a5 18. Qe3 {Lankinen,T (1645)-Kokarev,A (1997) ICCF 2019 1/2-1/2 (31)}) (6... Bg4 7. Be2 c5 8. dxc5 dxc5 9. Qxd8 Rxd8 10. h3 Bf5 11. Rd1 Nc6 12. Rxd8+ Rxd8 13. a4 Nb4 14. a5 Nxc2 15. Ra4 Nb4 16. Bd2 Nc6 17. Be1 Nd5 18. Nxd5 {Wilding,A (1450)-Wakeham,M (1600) ICCF 2014 0-1 (45)}) 7. a4 (7. Re1 h6 8. Bd3 Re8 9. e4 e5 10. Bc4 a6 11. Be3 b5 12. Bd5 Nxd5 13. exd5 e4 14. Nd2 f5 15. f3 exf3 16. Nxf3 Bb7 17. Qd2 Kh7 18. Qd3 Nf6 {Mottinger,H-Sommeling,G (1779) ICCF 2018 0-1 (36)}) (7. e4 e5 8. Ng5 c6 9. Nf3 Qc7 10. Nb5 cxb5 11. Bxb5 a6 12. Bd3 b5 13. Be3 Bb7 14. a4 Nxe4 15. axb5 axb5 16. Ng5 Nxg5 17. Bxg5 Rxa1 18. Qxa1 e4 {Miedema,H (1221)-Wilson,N (1554) ICCF 2016 0-1 (35)}) (7. h3 a5 8. Re1 c5 9. d5 Nb6 10. Bb5 e6 11. e4 exd5 12. exd5 Bf5 13. Bg5 Qc7 14. Re2 a4 15. g4 Bd7 16. Bxd7 Qxd7 17. Bxf6 Bxf6 18. a3 Nc4 {Little,G (1499)-Ellis,A ICCF 2017 0-1 (30)}) 7... e5 8. dxe5 Nxe5 9. b3 Nxf3+ 10. Qxf3 d5 11. Be2 Ne4 12. Bb2 Nxc3 13. Bxc3 {Wilding,A (1490) -Hurn,R (2003) ICCF 2019 0-1 (27)}) (1... d6 2. Nf3 (2. c4 e6 3. Nc3 Nd7 (3... d5 4. e3 Nf6 5. Nf3 g6 6. cxd5 exd5 7. Bd3 Bg7 8. O-O O-O 9. b3 Nc6 10. Ba3 Re8 11. Qc2 a6 12. Rac1 b5 13. Ne2 Bb7 14. Ne5 Re6 15. Nf4 {Miller,A-Rasmussen,B ICCF 2014 1-0 (27)}) (3... Qe7 4. Nf3 c6 5. e4 Nd7 6. Bg5 {1-0 (6) Garcia, J-Pereyra,D (1591) ICCF 2018}) (3... Ne7 4. e4 c6 5. f4 Nd7 6. Nf3 f6 7. Bd3 e5 8. O-O exf4 9. Bxf4 Ng6 10. Be3 Be7 11. Qc2 b6 12. e5 dxe5 13. Bxg6+ hxg6 14. Qxg6+ Kf8 15. Ng5 {Richardt,M-Gomez,P ICCF 2012 1-0}) (3... c6 4. e4 Nd7 5. Nf3 Be7 6. Bf4 Nb8 7. Be2 Nd7 (7... b6 8. O-O Nf6 9. e5 a5 10. exf6 gxf6 11. a3 h5 12. b4 f5 13. Re1 axb4 14. axb4 Rxa1 15. Qxa1 Bb7 16. Qa7 O-O 17. Qxb7 Bf6 18. Ra1 Bg7 19. Ra8 {Lucena Cifré,R (1572)-Rodríguez Padilla,N ICCF 2014 1-0 (28)}) 8. O-O Ngf6 9. e5 Nh5 10. Bc1 O-O 11. g4 Nhf6 12. exf6 Bxf6 13. Bf4 b6 14. Bxd6 Re8 15. Ne5 {Sepers,G (1982)-Hulst,B (1636) ICCF 2015 1-0 (29)}) 4. e4 Ne7 5. f4 g6 6. Nf3 Bg7 7. Bd3 f5 (7... O-O 8. O-O c5 9. Be3 b6 10. d5 Nf6 11. h3 exd5 12. cxd5 a6 13. Rc1 b5 14. Qd2 b4 15. Ne2 a5 16. Ng3 Ba6 17. Bxa6 Rxa6 18. f5 Qa8 19. Bh6 {Tseng,W-Nunnally,R ICCF 2007 1-0 (27)}) 8. Ng5 Nf8 9. O-O Bxd4+ 10. Kh1 c6 11. exf5 Nxf5 12. Bxf5 Bxc3 13. Bxg6+ hxg6 {Troncoso Flores,A (1761) -Pereyra,D (1754) ICCF 2016 1-0}) (2. g3 g6 3. Bg2 Bg7 4. h4 (4. e3 f5 5. Nf3 Nf6 6. O-O O-O 7. c3 c6 8. Ng5 Qe8 9. Qb3+ e6 10. Nd2 d5 11. c4 Nbd7 12. cxd5 exd5 13. Re1 b6 14. a3 h6 15. Ngf3 Bb7 {Armstrong,J-Green,P (1882) ICCF 2005 1-0}) 4... Nf6 5. Nh3 Nbd7 6. b3 O-O 7. Bb2 Re8 8. c4 c6 9. Nd2 e5 10. Ng5 exd4 11. Bxd4 Ne5 12. O-O Nh5 13. a4 c5 {Kurpnieks,V (2134)-Roth Jr.,P (1786) ICCF 2017 0-1 (27)}) 2... g6 3. c4 (3. c3 Bg7 4. Bg5 h6 5. Bh4 Nf6 6. e3 O-O 7. Bc4 Nbd7 8. Nbd2 c6 9. O-O b5 10. Bd3 Rb8 11. Qe2 b4 12. cxb4 Rxb4 13. Rab1 { Schiendorfer,R-Guevara i Pijoan,J (2130) ICCF 2005 1-0 (38)}) 3... Bg7 4. Nc3 ( 4. e3 Nd7 5. Bd3 c5 6. O-O cxd4 7. exd4 Ngf6 8. Re1 O-O 9. b3 Re8 10. Bb2 Nf8 11. Nc3 Qa5 12. Qc2 Bg4 13. Qe2 Qh5 14. Nd1 Bxf3 15. Qxf3 Qxf3 {Lanca,L (1505) -Tibbert,P (1794) ICCF 2017 1/2-1/2 (42)}) 4... c5 5. d5 Bxc3+ (5... e6 6. Qa4+ Bd7 7. Qb3 Qb6 8. dxe6 Bxe6 9. Bf4 Nc6 10. e3 Qxb3 11. axb3 Rd8 12. Ne4 Bxb2 13. Ra2 Nf6 14. Nxd6+ Rxd6 15. Rxb2 Rd7 16. Be2 Ne4 17. Ng5 {Rawlings,A (2394) -Copsey,A (2264) ICCF 2020 1/2-1/2 (39)}) 6. bxc3 f5 7. g3 (7. Qa4+ Nd7 (7... Bd7 8. Qc2 Qa5 9. a4 Na6 10. h3 Nc7 11. Bf4 Nf6 12. Nd2 e5 13. Bg5 Ng8 14. e3 h6 15. Bh4 g5 16. Bg3 O-O-O 17. f3 Ne7 18. Bd3 Rdg8 {Hansen,J (1970)-Ilonen,I (2073) ICCF 2015 1-0 (59)}) 8. g4 b5 9. cxb5 Nb6 10. Qc2 fxg4 11. Ng5 Nf6 12. h3 g3 13. fxg3 O-O 14. a4 Nh5 15. g4 Ng3 16. a5 Nxh1 17. axb6 c4 18. Be3 Bb7 { Kratochvíl,J (2262)-Deforel,J (2192) ICCF 2016 1-0 (27)}) (7. Bf4 Nf6 8. e3 Qa5 9. Qb3 Ne4 10. Rc1 a6 11. Bd3 Nf6 12. O-O O-O 13. a4 Nbd7 14. Rfe1 Rb8 15. e4 fxe4 16. Bxe4 Nxe4 17. Rxe4 Nf6 18. Rxe7 {Torres Valdés,F (1853)-Bosboom,A ICCF 2013 1-0 (25)}) 7... Qa5 8. Qb3 (8. Qd3 Nd7 9. Bg2 Ngf6 10. O-O Nb6 11. Bh6 Rg8 12. a4 Qa6 13. a5 Nxc4 14. Bf4 Kf7 15. Rfb1 Kg7 16. e3 Ne4 17. Bf1 e5 18. Qxc4 Qxc4 {Khrolenko,V (2051)-Hanegby,A (2074) ICCF 2014 1/2-1/2 (55)}) 8... Nf6 9. Bg2 Nbd7 10. O-O Nb6 11. Ng5 (11. Bf4 h6 12. Nd2 g5 13. Be3 Rg8 14. f3 Bd7 15. Bf2 O-O-O 16. Rfe1 h5 17. a4 Rg7 18. e4 fxe4 19. Nxe4 Rf8 20. Nd2 Kb8 21. Bf1 h4 22. g4 Be8 {Limbert,N (2175)-Gardner,A ICCF 2011 1/2-1/2 (27)}) (11. Re1 Qa6 12. Nd2 Qa4 13. e4 fxe4 14. Nxe4 Nxe4 15. Rxe4 Bf5 16. Re1 h6 17. Bf1 g5 18. Bd2 Kd7 {Andersen,L (2022)-Nemec,Z (2170) ICCF 2020 1/2-1/2 (42)}) 11... Bd7 12. a4 Qa6 13. Ne6 {Vanícek,J (1610)-Loison,F (1544) ICCF 2019 0-1 (57)}) (1... b6 2. Bf4 (2. Nf3 Bb7 (2... c5 3. e3 Qc7 4. Nbd2 Qd6 5. Bd3 Qe6 6. O-O cxd4 7. exd4 h5 8. d5 Qxd5 9. Be4 Qe6 10. Bxa8 g6 11. Re1 Qf6 12. Ne4 Qg7 13. Bf4 Na6 14. Qd5 {Malori,M (1781)-Limoli,P (1688) ICCF 2015 1-0 (28)}) 3. e3 (3. b3 Bxf3 4. gxf3 d5 5. e4 c6 6. a4 e6 7. Qe2 Nf6 8. Bg5 h6 9. Bd2 a5 10. c3 g5 11. h4 Nh7 12. b4 Be7 13. c4 Bf6 14. hxg5 Bxd4 {Lima,J-Costa,H ICCF 2010 0-1 (46)}) (3. c4 g6 (3... Bxf3 4. gxf3 e6 5. Nc3 Bb4 6. Bd2 Ne7 7. a3 Bxc3 8. Bxc3 d5 9. e4 c6 10. Qd2 Nd7 11. h4 h5 12. O-O-O dxc4 13. Bxc4 b5 14. Ba2 { Goldschagg,F (2158)-Kumar,K ICCF 2019 1-0}) 4. g3 Bg7 5. Nc3 (5. d5 d6 6. Bg2 a5 7. O-O h5 8. Qd2 Nh6 9. Qd3 Na6 10. Ng5 O-O 11. Nd2 Nc5 12. Qf3 Nf5 13. e4 Nd4 {Nichol,J (1310)-Reid,W (1255) ICCF 2020 1-0 (28)}) 5... d6 6. Bg2 Nd7 7. O-O e5 (7... Ngf6 8. d5 O-O 9. Nd4 Qc8 10. Nc6 Bxc6 11. dxc6 Nc5 12. Rb1 Qe6 13. b3 a6 14. Bb2 a5 15. Nb5 Qc8 16. f4 Qd8 17. a3 Ne8 18. b4 Na6 19. Bxg7 { Duenas,A-Breederveld,H (2094) ICCF 2010 1-0 (62)}) 8. dxe5 dxe5 9. Qc2 Ngf6 10. Rd1 Qe7 11. Nxe5 Bxg2 12. Nxd7 Nxd7 13. Kxg2 O-O 14. Nd5 {1-0 (14) Kince,J (1790)-Nanni,M ICCF 2013}) (3. Nbd2 Nf6 4. b3 g6 5. Bb2 Bg7 6. g3 O-O 7. Bg2 d6 8. c4 e5 9. dxe5 Ne4 10. O-O Nxd2 11. Qxd2 dxe5 12. Qxd8 Rxd8 13. Rad1 Nd7 14. Rd2 f6 {Smith,J-Silverman,R ICCF 2020 1-0 (34)}) (3. d5 Nf6 4. c4 e6 5. Nc3 Bb4 6. Bd2 O-O 7. Qb3 Qe7 8. Bg5 Na6 9. O-O-O Nc5 10. Qc2 Bxc3 11. Qxc3 Nce4 12. Qd4 exd5 13. Nh4 Nxg5 14. Rd3 c5 {Pye,J-Costa,H ICCF 2010 0-1 (41)}) 3... e6 ( 3... g6 4. Bd3 Bg7 5. c3 Nf6 6. O-O O-O 7. b3 d6 8. Be2 Nbd7 9. b4 a5 10. Ba3 axb4 11. cxb4 Nd5 12. Qd2 c5 13. b5 N7f6 14. Nc3 Rxa3 15. Rac1 {Sutherland,D (1807)-Coope,D (2094) ICCF 2011 0-1 (27)}) 4. Nbd2 (4. Bd3 f5 5. b3 Nf6 6. Bb2 Bd6 7. O-O O-O 8. Nbd2 Qe8 9. Qe2 Nc6 10. c4 Nb4 11. Bb1 Qh5 12. Re1 Ne4 13. Ne5 Qh6 14. Nf1 Rad8 15. a3 Nc6 {Stuart,P-Catania,D (1787) ICCF 2009 1/2-1/2 (72)}) 4... a5 5. c3 Nf6 6. Bd3 Be7 7. e4 c5 8. O-O d5 9. exd5 Bxd5 10. dxc5 Bxc5 11. Nb3 Bd6 12. Bb5+ Nc6 13. c4 Be4 {Gionfriddo,M (1816)-Di Pietro,R (1667) ICCF 2011 1-0 (40)}) (2. Bg5 Bb7 3. Nc3 (3. c4 g6 4. Nc3 Bg7 5. e4 d6 6. f3 Nf6 7. Qd2 O-O 8. O-O-O Nbd7 9. Bh6 c5 10. d5 Bxh6 11. Qxh6 a6 12. h4 b5 13. g4 Ne5 14. cxb5 Qb6 {Plums,U (1826)-Coope,D (2041) ICCF 2012 0-1 (25)}) 3... h6 4. Bh4 g5 5. Bg3 Nf6 6. f3 d6 7. e4 Bg7 8. Bd3 c5 9. Nge2 O-O 10. Bf2 Nc6 11. Qd2 Nb4 12. h4 Nxd3+ 13. Qxd3 g4 {Sibbald,P (1975)-Breederveld,H (2034) ICCF 2013 1/2-1/2 (88)}) (2. c3 Bb7 3. f3 d5 4. g4 e5 (4... e6 5. Nh3 h6 6. Bg2 Nd7 7. Be3 Ngf6 8. Nf4 c5 9. h4 c4 10. Qc2 Qc7 11. h5 b5 12. Nxe6 fxe6 13. Bf4 Qb6 14. Qg6+ Ke7 15. g5 hxg5 16. Bxg5 {Byrne,V (1545)-Karpoff,K (1703) ICCF 2015 0-1 (38)}) 5. Bg2 Qh4+ 6. Kd2 exd4 7. Qa4+ Nc6 8. Nh3 h5 9. Kd3 hxg4 10. Bg5 Qh7+ 11. e4 gxf3 12. Bxf3 Qxh3 13. Nd2 dxe4+ {Vaessen,J (1789)-Kappelhof,W (2221) ICCF 2017 0-1}) 2... Bb7 3. e3 (3. Nf3 g6 4. e3 Bg7 5. Bd3 h5 6. h3 a5 7. c3 Nh6 8. Nbd2 Na6 9. Qe2 Nf5 10. O-O c5 11. Bxf5 d6 12. Bd3 Nc7 13. Nc4 Ne6 14. Bh2 b5 {Humphreys,B-Reid,W (1144) ICCF 2021 1-0 (34)}) 3... d6 4. Nf3 Nd7 ( 4... Nf6 5. c4 Nbd7 6. Nc3 e6 7. Bd3 Be7 8. O-O O-O 9. Re1 Nh5 10. d5 Nxf4 11. exf4 Nc5 12. Bc2 exd5 13. cxd5 Bf6 14. Ne4 Nxe4 15. Rxe4 Bxb2 16. Rb1 {Ong,A (1361)-Ainsborough,G (1580) ICCF 2018 0-1 (41)}) 5. a4 Ngf6 6. a5 bxa5 7. Na3 Nd5 8. Bg3 g6 9. Nc4 a4 10. Na5 Rb8 11. Bb5 Ba8 12. Nc6 Bxc6 13. Bxc6 {McLeod, S (2156)-Maynard,M ICCF 2020 1-0 (38)}) (1... Na6 2. e3 (2. e4 d6 (2... h6 3. Bc4 e6 4. Nc3 Be7 5. f4 b6 6. Nf3 Bb7 7. Qe2 Nb8 8. O-O c5 9. d5 exd5 10. exd5 d6 11. Re1 Nd7 12. Ne4 Qc7 13. Ng3 O-O-O 14. a4 {Guyard,B-Jokipii,G (1279) ICCF 2014 1-0}) 3. Nc3 e6 4. Nf3 Nf6 5. Bb5+ Bd7 6. Qe2 c6 7. Bxa6 bxa6 8. e5 Ng4 9. h3 Nh6 10. Bxh6 gxh6 11. Ne4 d5 12. Nf6+ Ke7 13. Qe3 Qa5+ {Renard,S (1978)-Spiliopoulos,V ICCF 2016 1-0}) 2... Nf6 3. Bxa6 bxa6 4. Ne2 (4. h3 Bb7 5. Nf3 e6 6. O-O c5 7. dxc5 Bxc5 8. a3 h5 9. b4 Bb6 10. Bb2 Qe7 11. Nc3 h4 12. Qd2 a5 13. Qe2 axb4 14. axb4 {1/2-1/2 (14) Jones,S-Jokipii,G (1279) ICCF 2014}) 4... c5 5. Nbc3 Bb7 6. O-O e6 7. Qd3 d5 8. b3 Rc8 9. a4 Nd7 10. Ba3 Bd6 11. f4 Qe7 12. Rf3 c4 13. Bxd6 {Koprek,J-Hullsiek,T ICCF 2007 0-1 (74)}) (1... f6 2. e4 (2. c4 e6 3. Nc3 (3. Nf3 Kf7 4. Nc3 Bb4 5. Qb3 Bxc3+ 6. Qxc3 Ne7 7. e4 d5 8. e5 c6 9. Bd3 dxc4 10. Bxc4 Nd5 11. Qb3 b5 12. Bd3 Nd7 13. a3 a6 14. Qc2 Qb6 { Himpel,R-Akrill,R ICCF 2014 0-1 (44)}) 3... Be7 4. Nf3 Nh6 5. Bxh6 Rg8 6. Bd2 g6 7. e4 f5 8. exf5 gxf5 9. Ne5 d6 10. Qh5+ Kf8 11. Qf7# {1-0 (11) Lucena Cifré,R (1694)-Delgado Cobo,J ICCF 2015}) 2... c6 (2... e6 3. Bd3 (3. f4 d5 ( 3... Ne7 4. Nf3 d5 5. Bd3 dxe4 6. Bxe4 g6 7. O-O Bg7 8. Nc3 c6 9. Be3 Nd5 10. Nxd5 exd5 11. Bd3 O-O 12. h3 Re8 13. Qd2 Nd7 14. f5 Nf8 15. fxg6 {Khokhlova,G (1829)-Beday,A (2012) ICCF 2018 1/2-1/2}) 4. Nc3 dxe4 5. Nxe4 Bb4+ 6. c3 Qd5 7. Bd3 f5 8. cxb4 fxe4 9. Be2 Nc6 10. b5 Nxd4 11. Be3 Nxe2 12. Qxd5 exd5 13. Nxe2 Bg4 14. Nd4 Ne7 {Koks,P-Akrill,R ICCF 2014 0-1 (26)}) (3. Nc3 Ne7 4. e5 fxe5 5. Qh5+ g6 6. Qxe5 Rg8 7. Nf3 Nbc6 8. Qf4 Nb4 9. Qd2 Bg7 10. Bd3 Nxd3+ 11. Qxd3 b6 12. O-O Bb7 13. Ne4 h6 14. Re1 d5 {Romero,P-Akrill,R ICCF 2015 1-0 (43)}) 3... Nc6 (3... c6 4. Nc3 Qa5 5. Nf3 Bb4 6. Bd2 g5 7. a3 Bd6 8. e5 fxe5 9. Ne4 Qc7 10. Nfxg5 exd4 11. Qh5+ Ke7 12. Nf6 Kxf6 13. Qf7+ Ke5 14. Be4 Qb6 15. f4# { Ketelaars,A (1687)-Vaessen,J (1091) ICCF 2020 1-0}) (3... Bd6 4. Nf3 Ne7 5. e5 fxe5 6. dxe5 Bc5 7. Ng5 O-O 8. Bxh7+ Kh8 9. Qh5 Rg8 10. Nf7# {1-0 (10) Franzén, T (2250)-Ekelund,B ICCF 2017}) (3... Ne7 4. Nf3 g6 5. Nc3 d5 6. h4 Nbc6 7. Bf4 a6 8. Qd2 dxe4 9. Nxe4 Nd5 10. Bg3 h5 11. Qe2 Kf7 12. O-O Bh6 13. Rfe1 Re8 14. c4 Nf4 15. Bxf4 {Hugo,T (2313)-Tunega,F (2313) ICCF 2020 1-0 (28)}) 4. Nf3 d5 5. exd5 exd5 6. O-O Be6 7. Re1 Qd7 8. Bf5 Nd8 9. Qe2 Kf7 10. Bd3 Bd6 11. c4 dxc4 12. Bxc4 Ne7 13. Nc3 c6 14. Bd3 {Mickevicius,J (2302)-Baroin,B (2320) ICCF 2020 (60)}) (2... g6 3. Bc4 (3. Nf3 e6 4. Nc3 Bd6 5. Bd3 Ne7 6. O-O O-O 7. e5 fxe5 8. dxe5 Bc5 9. Ne4 h6 10. Nxc5 b6 11. Ne4 Nbc6 12. Bxh6 Rf7 13. Nf6+ Kh8 14. Ng5 {1-0 (14) Hermansen,R (2001)-Ekelund,B ICCF 2017}) 3... e6 4. Nc3 Bd6 5. Nf3 h6 6. O-O g5 7. e5 Ne7 8. exd6 O-O 9. dxe7 Qxe7 10. d5 d6 11. dxe6 Nc6 12. Nd5 Qxe6 13. Ne3 d5 14. Bxd5 {Andersson,K (1900)-Ekelund,B ICCF 2017 1-0}) (2... d6 3. Nf3 Bg4 4. Bc4 Nc6 5. c3 a6 6. Qb3 e6 7. Bxe6 Bxe6 8. Qxe6+ Qe7 9. Qd5 O-O-O 10. O-O h5 11. b4 Qd7 12. a4 Nge7 13. Qa2 Na7 14. d5 {Klauner, T (2436)-Silva,N (1764) ICCF 2016 1-0}) 3. Nc3 b5 (3... e5 4. dxe5 fxe5 5. Qh5+ g6 6. Qxe5+ Kf7 7. Qxh8 Bc5 8. Qxh7+ Kf8 9. Bc4 d5 10. exd5 Qe7+ 11. Qxe7+ Nxe7 12. dxc6 Nbxc6 13. Nb5 Bg4 14. Nc7 Rc8 15. Bh6# {Bátora,V-Cviková,K ICCF 2009 1-0}) 4. Bd3 b4 5. Nce2 Bb7 6. Nf3 e6 7. O-O g5 8. Ng3 h5 9. e5 h4 10. Bg6+ Ke7 11. exf6+ Kxf6 12. Bxg5+ Kxg6 13. Ne5+ {Taffijn,M (2126)-Vaessen,J (1143) ICCF 2020 1-0}) (1... h5 2. e4 (2. Bf4 e6 3. Nf3 d6 4. e4 d5 5. exd5 Bb4+ 6. c3 Nf6 7. Qa4+ Bd7 8. Qxb4 Nxd5 9. Qxb7 Nxf4 10. Qxa8 Nd3+ 11. Bxd3 Bc6 12. Qxa7 g5 13. Ne5 Bxg2 {Martinez Segado,J-Dorn,P ICCF 2019 1-0}) (2. c4 e6 3. Nc3 d5 4. Nf3 Nc6 5. Bf4 Be7 6. c5 g5 7. Bd2 g4 8. Ng1 Nxd4 9. b4 Nc6 10. Qb3 Nf6 11. e3 a5 12. Bb5 axb4 13. Bxc6+ bxc6 {Bonatti,A (1755)-Gibson,T ICCF 2012 0-1}) (2. Nf3 d6 3. e4 Bg4 4. h3 Bd7 5. Nc3 e6 6. Bc4 Nc6 7. O-O Be7 8. d5 Ne5 9. Nxe5 dxe5 10. Qd3 a6 11. Qg3 Rh7 12. dxe6 Bc6 13. exf7+ {1-0 (13) Schwarz,R-Knouse, C ICCF 2013}) 2... e6 (2... c6 3. Nc3 d5 4. Nf3 dxe4 5. Nxe4 Bf5 6. Bd3 Bxe4 7. Bxe4 Nf6 8. Bd3 g6 9. O-O Nbd7 10. Re1 Bg7 11. Qe2 Nh7 12. Bd2 Bf6 13. Bc4 Nb6 14. Bb3 {Aymard,M (2030)-Meneghetti,J (1920) ICCF 2021 1-0 (32)}) (2... Nf6 3. Nc3 e6 4. Nf3 d5 5. e5 Ne4 6. Nxe4 dxe4 7. Ng5 f6 8. exf6 gxf6 9. Nxe4 f5 10. Ng5 a6 11. Be2 Rg8 12. Bxh5+ Ke7 13. O-O Bh6 14. Nf7 {Pettersson,R-Borisenko,D ICCF 2012 1-0}) (2... h4 3. Nc3 Nc6 4. Nf3 e6 5. d5 Be7 6. dxc6 Bb4 7. Qd4 Qe7 8. Bg5 Bxc3+ 9. Qxc3 f6 10. Bxh4 g5 11. Bg3 Qh7 12. O-O-O Qxe4 13. cxd7+ Bxd7 14. Rxd7 {Santamaría Navarro,F (1779)-Rodríguez Padilla,N ICCF 2013 1-0}) 3. Nf3 (3. Be2 g6 4. Nf3 f6 5. Nh4 Ne7 6. e5 f5 7. Nc3 d5 8. Bg5 Rg8 9. Nxg6 Qd7 10. Nxf8 Kxf8 11. h4 a6 12. Bxh5 Rh8 13. g4 b5 14. Qd2 b4 {Veiga Rodriguez, P-Borisenko,D ICCF 2012 1-0}) 3... Nc6 (3... d5 4. Nc3 Bb4 5. exd5 exd5 6. Bd3 Qe7+ 7. Ne5 Bxc3+ 8. bxc3 f6 9. Bg6+ Kd8 10. Ba3 Qe6 11. Bf7 Qa6 12. Ng6 Qxa3 13. Nxh8 Qxc3+ 14. Kf1 Ne7 15. Ng6 {Jones,B (2193)-Gibson,T ICCF 2012 1-0 (62)} ) (3... Be7 4. c4 Nf6 5. e5 Ne4 6. Bd3 d5 7. exd6 Nxd6 8. Nc3 O-O 9. Qe2 Nc6 10. Bf4 Nf5 11. Bxf5 exf5 12. O-O Nxd4 13. Nxd4 Qxd4 14. Nd5 Bd8 15. Rfe1 { Monov,A (2228)-Kaytazki,L (1506) ICCF 2020 1-0 (63)}) (3... f6 4. Be2 g5 5. Nxg5 Nh6 6. Bxh5+ Ke7 7. e5 Bg7 8. exf6+ Bxf6 9. Ne4 Ng8 10. d5 d6 11. Nbc3 Qf8 12. O-O Qg7 13. dxe6 Bxe6 14. Re1 {Siikaluoma,A (2216)-Erdogdu,T ICCF 2006 1-0 (26)}) 4. d5 Nce7 5. Nc3 exd5 6. exd5 d6 7. Bd3 c5 8. O-O h4 9. Bg5 f6 10. Bxh4 Bg4 11. Bg3 Bf5 12. Nb5 Nxd5 13. Bxf5 {Berna,S (1820)-Borisenko,D ICCF 2012 1-0 }) (1... h6 2. Nf3 (2. Bf4 g5 3. Be5 Nf6 4. Nc3 Bg7 5. Nd5 Nxd5 6. Bxg7 Rh7 7. Be5 f6 8. Qd3 Rg7 9. Bg3 c5 10. e4 Nb4 11. Qc4 Qa5 12. O-O-O Nxa2+ 13. Kb1 Nb4 {Ong,A (1369)-Fernandez,Q (1455) ICCF 2019 0-1}) 2... g5 3. e4 (3. e3 Nf6 4. Bd3 d6 5. O-O Bg4 6. Nbd2 Bg7 7. c3 Nbd7 8. Qb3 Nb6 9. e4 Bc8 10. a4 a5 11. Nc4 Nfd7 12. Ne3 Nf8 13. Re1 Ng6 14. e5 O-O {Price,D (2001)-Miller,S ICCF 2009 1-0} ) 3... Bg7 (3... g4 4. Ne5 d6 5. Nxg4 Bg7 6. Ne3 Bd7 7. Nc3 e5 8. Bc4 exd4 9. Qh5 Qf6 10. Ned5 Qg6 11. Qxg6 fxg6 12. Nxc7+ Kd8 13. N3d5 Ne7 14. Nxa8 Nxd5 15. Bxd5 {Grube,F (2047)-Baumann,W (1989) ICCF 2009 1-0 (27)}) 4. c3 d5 5. e5 e6 6. Bd3 Nd7 7. Qe2 Ne7 8. Na3 Ng6 9. h3 Qe7 10. Bd2 a6 11. O-O-O c5 12. g3 c4 13. Bxg6 {Dixon,R (1919)-Grant,P ICCF 2019 1-0}) (1... a6 2. Nf3 (2. Bf4 d5 (2... e6 3. e3 d5 4. Nf3 b5 5. Be2 Bd6 6. O-O Ne7 7. Nbd2 O-O 8. Nb3 Bd7 9. c3 Be8 10. Bd3 Ng6 11. Bg3 Qe7 12. Nbd2 f5 13. Re1 c5 14. dxc5 {Daatselaar,J (2164) -Green,M (2159) ICCF 2021 (35)}) 3. e3 Nf6 4. Nd2 e6 5. Bd3 c5 6. c3 b5 7. Ngf3 Nbd7 8. Bc2 Bb7 9. Ne5 Nxe5 10. Bxe5 Nd7 11. Bf4 Be7 12. h4 Bxh4 13. Nf3 Bf6 { Stack,R-Egger,R ICCF 2018 0-1 (37)}) (2. c4 d6 (2... g6 3. Nc3 d6 4. e4 Nd7 5. Nf3 e5 6. Be2 exd4 7. Nxd4 Bg7 8. Be3 Ngf6 9. Qd2 Nc5 10. f3 O-O 11. O-O-O Bd7 12. Bh6 Bxh6 13. Qxh6 Na4 14. Nxa4 {Campani,P (2126)-Green,M (2153) ICCF 2020 1/2-1/2}) 3. Nc3 Nf6 4. g3 g6 5. Bg2 Bg7 6. Nf3 O-O 7. O-O Bg4 8. Qc2 Re8 9. e4 Nc6 10. Be3 Qd7 11. a3 Bxf3 12. Bxf3 e5 13. d5 Ne7 {Cook,P (1716)-White,C (1743) ICCF 2016 1/2-1/2}) (2. g3 d5 (2... h5 3. Bg2 Nf6 4. e4 d6 5. Nc3 e5 6. Nf3 Nc6 7. d5 Ne7 8. O-O g6 9. a4 Bg7 10. Bg5 O-O 11. Qd2 Bd7 12. a5 b5 13. axb6 cxb6 14. Rfc1 {Joachimsthaler,K (2056)-Green,M (2102) ICCF 2019 1/2-1/2 (30)}) 3. Bg2 Nf6 4. c4 dxc4 5. Nc3 e6 6. Bg5 Nbd7 7. e4 h6 8. Bxf6 Nxf6 9. Nf3 b5 10. O-O Bb7 11. Re1 Bb4 12. a3 Ba5 13. Ne5 O-O {Wade,D (1838)-Egger,R ICCF 2018 0-1}) (2. Nc3 d6 3. e4 Nd7 4. Nf3 b5 5. d5 b4 6. Ne2 Ngf6 7. Ng3 Bb7 8. a3 bxa3 9. Rxa3 h5 10. h4 g6 11. c4 Bg7 12. Be3 c5 13. Bd2 Ng4 {Hackenberg,T (2106)-Green,M (2115) ICCF 2019 1/2-1/2 (40)}) 2... f5 (2... e6 3. Bg5 Be7 4. Bxe7 Qxe7 5. e4 Qb4+ 6. Nc3 Qxb2 7. Ke2 Nf6 8. Kd3 Ng4 9. Qe1 Nxf2+ 10. Qxf2 Qxa1 11. Qe1 Qxe1 12. Nxe1 b5 13. Ke3 b4 14. Nb1 {Hardwick,M (1122)-Pardoe,I (1648) ICCF 2018 0-1 (33)}) (2... h6 3. Bf4 Nf6 4. h3 d5 5. e3 Nc6 6. Be2 Bf5 7. c3 e6 8. Nbd2 Bd6 9. Rc1 Bxf4 10. exf4 O-O 11. g3 Qd6 12. Ne5 Ne7 13. g4 Bh7 14. Ndf3 {Humbert,P (1058)-Morin,S (2251) ICCF 2020 0-1 (32)}) 3. Bf4 (3. c4 Nf6 4. Nc3 g6 5. Bf4 Bg7 6. e3 d6 7. Be2 e6 8. O-O O-O 9. Qb3 b6 10. Rfd1 Nc6 11. Rac1 Ne4 12. Bd3 Nxc3 13. Qxc3 Bb7 14. Be2 Qe8 {Andersen,L (2072)-Green,M (2097) ICCF 2019 0-1 (65)}) 3... Nf6 4. h3 g6 5. e3 Bg7 6. Nbd2 Nc6 7. c4 O-O 8. a3 d6 9. Bd3 e5 10. dxe5 dxe5 11. Nxe5 Nxe5 12. Bxe5 Qxd3 13. Rc1 {Huneke, M-Green,M (2097) ICCF 2019 0-1}) (1... g5 2. Bxg5 Bg7 (2... d5 3. e3 f5 4. Qh5+ Kd7 5. Nf3 c5 6. Ne5+ Kc7 7. Nf7 {1-0 (7) Svaralová,M-Vánová,J ICCF 2010}) ( 2... h6 3. Bf4 Nf6 4. e3 Nc6 5. Nf3 a6 6. Nc3 d5 7. Bd3 Rg8 8. O-O Bh3 9. Nh4 Qd7 10. Na4 Bxg2 11. Nxg2 Qh3 12. Nc5 Qxg2# {0-1 (12) Anderson,L (978)-Ridout, P ICCF 2017}) 3. e3 (3. Nf3 c5 4. e3 Nc6 5. c3 Qb6 6. Qc2 f6 7. Bh4 d5 8. dxc5 Qxc5 9. Nbd2 e5 10. e4 Nge7 11. Bd3 Bg4 12. O-O O-O-O 13. h3 Bxf3 14. Nxf3 d4 { Lorenz,B-Chatel,M (1480) ICCF 2017 1-0 (41)}) 3... Bf6 4. Nf3 d5 5. Bd3 Bg4 6. Bf4 Nc6 7. h3 Bxf3 8. gxf3 {1-0 (8) Lucena Cifré,R (1551)-Aguilar Medina,J (1662) ICCF 2017}) (1... c5 2. d5 f5 3. c4 Nf6 4. Nc3 g6 5. g3 Bg7 6. Bg2 O-O 7. Nf3 b6 8. O-O Bb7 9. e4 Nxe4 10. Nxe4 fxe4 11. Ng5 e3 12. Bxe3 Bxb2 13. Rb1 {Bontems,C (1989)-Alozy,F (1941) ICCF 2011 1-0}) (1... a5 2. e4 (2. Nf3 d5 3. Bf4 Nf6 4. e3 Ng4 5. h3 Ra6 6. Bxa6 bxa6 7. hxg4 g6 8. c3 Bxg4 9. Nbd2 h5 10. Qa4+ Qd7 11. Qxa5 e5 12. Nxe5 Qb5 13. Qxb5+ axb5 {Smith,S-Johal,A ICCF 2006 1-0 }) 2... a4 3. Nf3 Ra5 4. Bd3 c5 5. Bd2 Ra7 6. Nc3 cxd4 7. Nxd4 a3 8. bxa3 Rxa3 9. Ncb5 Ra4 10. c3 Qa5 11. c4 Qxb5 12. Nxb5 {1-0 (12) Yatsenko,L-Jokipii,G (1395) ICCF 2016}) (1... Nh6 2. e4 e5 3. Nf3 exd4 4. Bxh6 gxh6 5. Qxd4 Rg8 6. Nc3 Nc6 7. Qe3 d6 8. O-O-O Bg7 9. Bb5 Be6 10. Rhe1 Qd7 11. e5 a6 12. Bxc6 Qxc6 13. Nd4 {Deforel,J (2038)-Carlier,P (1475) ICCF 2017 1-0 (65)}) 2. c4 (2. a3 f5 (2... d5 3. e3 (3. Bf4 c5 4. Nf3 cxd4 5. Nxd4 Nd7 6. Nf3 Ngf6 7. e3 Qb6 8. Nbd2 Qxb2 9. Qb1 Bxa3 10. Qxb2 Bxb2 11. Rb1 Bc3 12. Be2 Ne4 13. Rd1 a5 14. O-O Bxd2 {Hardwick,M (1498)-Gray,G ICCF 2015 0-1 (37)}) 3... c5 (3... Nf6 4. Nf3 Ne4 5. Nbd2 f5 6. Nxe4 fxe4 7. Ne5 Qf6 8. Be2 Nd7 9. Bh5+ g6 10. Be2 Nxe5 11. dxe5 Qf5 12. Qd4 b6 13. Bb5+ Bd7 14. Qa4 Bxb5 15. Qxb5+ {Hardwick,M (1161)-Dutt,B (1561) ICCF 2019 0-1 (30)}) 4. Bb5+ (4. Nf3 Nf6 5. Bb5+ Bd7 6. Bxd7+ Nbxd7 7. Nbd2 Qc7 8. c4 cxd4 9. exd4 dxc4 10. Qc2 Rc8 11. O-O Bd6 12. Ne4 Nxe4 13. Qxe4 Nf6 14. Qe2 O-O 15. Bg5 Nd5 {Hardwick,M (1343)-Baron,M (1887) ICCF 2017 0-1 (28)}) 4... Bd7 5. Bxd7+ Qxd7 6. Nf3 Nc6 7. O-O Nf6 8. Ne5 Qc7 9. Nd2 Nxe5 10. dxe5 Qxe5 11. Nf3 Qc7 12. Qd3 Bd6 13. Qb5+ Qd7 14. Qxd7+ {Hardwick,M (1236)-Picken,R (1743) ICCF 2019 0-1 (47)}) (2... b6 3. Nf3 Bb7 4. Bg5 Be7 5. Bxe7 Nxe7 6. e3 f5 7. Bd3 O-O 8. O-O c5 9. c4 Ng6 10. Nc3 d6 11. Re1 Nd7 12. Be2 Qe7 13. Nb5 a6 14. Nc3 {Hardwick,M (1343)-Picken,R (1856) ICCF 2016 0-1 (31)}) (2... Nc6 3. Nf3 Qf6 4. Bg5 Qg6 5. Qd3 Qxd3 6. exd3 h6 7. Bf4 d6 8. Be3 Nf6 9. h3 Nd5 10. Bd2 Be7 11. Nc3 Nxc3 12. Bxc3 O-O 13. Be2 Kh8 14. O-O {Hardwick,M (1345) -Armstrong,J (1560) ICCF 2013 0-1 (47)}) (2... Nf6 3. e3 g6 4. Be2 Bg7 5. Nf3 O-O 6. O-O d5 7. b4 c6 8. Bb2 Nbd7 9. Nc3 Qc7 10. Na4 a5 11. Nc5 b6 12. Nxd7 Bxd7 13. c3 axb4 14. axb4 {Jones,S-Secondi,A (1536) ICCF 2014 1/2-1/2}) 3. Nf3 Nf6 4. Bg5 (4. Nc3 d5 5. e3 Nbd7 6. Bb5 c6 7. Bd3 Bd6 8. b3 Ne4 9. Bb2 O-O 10. Qe2 Qf6 11. h3 e5 12. dxe5 Nxe5 13. Nd4 Bd7 14. g3 Rad8 15. Rg1 Nxc3 {Chandler, J (1680)-Llagaria Vidal,E (2189) ICCF 2011 0-1}) 4... Be7 5. e3 (5. Nbd2 d5 6. Ne5 c5 7. Ndf3 Qb6 8. Rb1 cxd4 9. Qxd4 Bc5 10. Qa4+ Nc6 11. Nxc6 Bxf2+ 12. Kd1 bxc6 13. Bh4 Ne4 14. Qb4 Bxh4 15. Nxh4 Nf2+ 16. Ke1 Nxh1 {Hardwick,M (1491) -Beurden,M ICCF 2013 0-1 (46)}) (5. Bxf6 Bxf6 6. e3 O-O 7. Nbd2 c5 8. Be2 cxd4 9. exd4 d6 10. Nb3 Qe7 11. O-O e5 12. Ne1 Be6 13. d5 Bf7 14. Bc4 Nd7 15. Nf3 Rac8 16. Bd3 e4 {Hardwick,M (1261)-Woodhouse,S (2060) ICCF 2019 0-1 (31)}) 5... O-O 6. Bd3 (6. Be2 b6 7. O-O Bb7 8. Nbd2 Ne4 9. Bxe7 Qxe7 10. c4 d6 11. c5 dxc5 12. dxc5 Nxc5 13. Qc2 Ne4 14. Rfc1 c5 15. Bd3 Nxd2 16. Qxd2 Nd7 17. Rd1 Rad8 { Hardwick,M (1495)-Woodhouse,S (1677) ICCF 2015 0-1 (44)}) 6... d6 7. O-O Nbd7 8. c4 h6 9. Nbd2 hxg5 10. Nxg5 Nb8 11. Rc1 Ng4 12. h4 Bxg5 13. hxg5 Qxg5 { Hardwick,M (1480)-Cranmer,S (2126) ICCF 2015 0-1}) (2. Bf4 c5 (2... Bb4+ 3. c3 Bd6 (3... Nc6 4. cxb4 Nxb4 5. Qb3 a5 6. Nf3 Nf6 7. e3 O-O 8. Nbd2 d5 9. Be2 Qd7 10. O-O Qc6 11. Rac1 Qb6 12. Bxc7 Qa7 13. Bd6 Rd8 14. Bxb4 axb4 15. Qxb4 { Glover,L-Lubinati,P ICCF 2019 0-1 (25)}) 4. Bxd6 cxd6 5. e4 a6 (5... e5 6. Nd2 Nf6 7. d5 O-O 8. b4 Qc7 9. Rc1 a6 10. Ngf3 h6 11. Bd3 a5 12. b5 b6 13. O-O a4 14. Nh4 g6 15. f4 Re8 16. Qf3 Qc5+ 17. Kh1 {McLeod,S-Morgan,J ICCF 2019 1-0}) 6. Nd2 b5 7. a4 Bb7 8. axb5 axb5 9. Rxa8 Bxa8 10. Bxb5 Qb6 11. Nc4 Qc7 12. Qd3 Ne7 13. Nf3 Bc6 14. Ne3 {Rough,R-Armstrong,J (1658) ICCF 2007 1-0 (46)}) (2... b6 3. e3 f5 4. Nc3 Nf6 5. Qf3 d5 6. O-O-O Bd6 7. h4 O-O 8. h5 a6 9. h6 g6 10. Nh3 c5 11. Be2 Ra7 12. Qg3 Bxf4 13. Nxf4 Nc6 14. a3 {Vasile,C (2140)-Cornea,A ICCF 2014 1/2-1/2 (58)}) (2... Nc6 3. c3 d5 4. e3 Nge7 5. Bg3 Nf5 6. Bd3 Nxg3 7. hxg3 Bd7 8. Nf3 f5 9. g4 fxg4 10. Nh4 Qg5 11. Ng6 Rg8 12. Rxh7 O-O-O 13. Nd2 e5 14. dxe5 {Müller-Töpler,M (1887)-Horváth,J (1880) ICCF 2020 1/2-1/2}) (2... f6 3. e3 d6 4. Nf3 g5 5. Bg3 Bg7 6. c4 f5 {0-1 (6) Owens,J (2263)-Green,M (2063) ICCF 2018}) (2... Bd6 3. Bxd6 cxd6 4. c4 Nc6 5. e3 Qb6 6. Qd2 Nf6 7. Nc3 O-O 8. a3 e5 9. d5 Na5 10. Qc2 Qb3 11. Rc1 Qxc2 12. Rxc2 Nb3 13. Nb5 Ne8 14. h4 {Lorenz,B-Sinijs,A ICCF 2017 1-0}) 3. e3 (3. c3 Qb6 4. Qb3 (4. Qc2 cxd4 5. cxd4 Nc6 6. e3 Nb4 7. Qb3 Qa5 8. Nd2 b6 9. a3 Ba6 10. Rc1 Bxf1 11. Kxf1 Qa6+ 12. Ne2 Nd3 13. Rc2 Nxf4 14. exf4 Be7 15. g3 Nf6 {Lecha González,J (2223)-Rodríguez Pérez,R (2198) ICCF 2020 1/2-1/2}) 4... Qxb3 5. axb3 cxd4 6. cxd4 Nc6 7. Nf3 Nf6 8. e3 Bb4+ 9. Nbd2 d5 10. Kd1 Bd7 11. Ne5 a6 12. Nd3 Be7 13. h3 O-O 14. Nb1 Nb4 {Daatselaar,J (2203)-Rodríguez Pérez,R (2223) ICCF 2020 1/2-1/2 (25)}) (3. Nc3 cxd4 4. Qxd4 Nc6 5. Qd1 e5 6. Bg3 Bb4 7. Qd3 Nf6 8. a3 Bxc3+ 9. Qxc3 d6 10. Qd3 Be6 11. e4 Qa5+ 12. c3 a6 13. Nf3 Qa4 14. b4 d5 {Sesko,M (2188)-Jaksa,C (1970) ICCF 2012 1/2-1/2 (57)}) (3. d5 Qb6 4. Be5 d6 5. Bc3 e5 6. e4 Nf6 7. Nd2 Be7 8. Ngf3 Bg4 9. Be2 O-O 10. O-O Nh5 11. h3 Bd7 12. Nxe5 dxe5 13. Bxh5 f6 14. Bg4 Bb5 {Nurmi,R (1936)-McLaughlin,E (1430) ICCF 2018 1/2-1/2}) (3. e4 cxd4 4. Qxd4 Nc6 5. Qd1 Qb6 6. Nc3 Qxb2 7. Nb5 Bb4+ 8. Ke2 Nf6 9. Qb1 Qxb1 10. Rxb1 Ba5 11. f3 d5 12. e5 Nd7 13. Nd6+ Ke7 14. Nxb7 Bb6 {Ainsborough,G (1458)-MacGilla tSamhais,P ICCF 2018 0-1}) 3... cxd4 (3... Qb6 4. Nc3 (4. b3 Nc6 5. Nf3 Nf6 6. c3 d5 (6... Be7 7. Bd3 cxd4 8. exd4 Nd5 9. Bg3 d6 10. O-O O-O 11. h3 f5 12. b4 a6 13. a3 g5 14. Re1 h6 15. c4 Nf4 16. d5 Bf6 17. Bxf5 Bxa1 {0-1 (17) Maylott, P (2063)-Davidson,J (2127) ICCF 2018}) 7. Bd3 Nh5 8. Bg5 h6 9. Bh4 cxd4 10. exd4 g5 11. Bg3 g4 12. Ng1 Nxg3 13. hxg3 h5 14. Ne2 e5 15. a4 Be6 {Fernández,J (2404)-Rotella,A (2259) ICCF 2017 1-0 (29)}) 4... a6 (4... Nf6 5. Rb1 Nc6 6. Nf3 Be7 7. Na4 Qa5+ 8. c3 b6 9. a3 c4 10. Bc7 d5 11. Be2 Ne4 12. O-O O-O 13. Nc5 Bxc5 14. dxc5 Qxc5 15. Bf4 f6 16. h3 {Anderson,J (1752)-Bell,A (2326) ICCF 2010 0-1 (26)}) 5. Rb1 (5. a3 d5 6. Nf3 Nf6 7. Be2 cxd4 8. exd4 Bd7 9. Rb1 Bd6 10. Ne5 Nc6 11. Nxd7 Kxd7 12. Bxd6 Kxd6 13. O-O Qxd4 14. Qxd4 Nxd4 15. Bd3 Rhc8 16. Rbd1 b5 {Eacker,B-Lund,S (1315) ICCF 2019 0-1}) 5... Nf6 6. Nf3 d6 7. Be2 Be7 8. O-O O-O 9. a3 cxd4 10. exd4 Qc7 11. Bd3 Nbd7 12. Re1 Re8 13. Rc1 b6 14. Ne4 Nxe4 15. Bxe4 {Engels,J (1914)-Ketelaars,A (1687) ICCF 2020 1/2-1/2 (32)}) (3... a6 4. c3 Nf6 5. Nf3 h6 6. Nbd2 d5 7. Bd3 c4 8. Bc2 Be7 9. O-O Nc6 10. Ne5 O-O 11. b3 cxb3 12. axb3 Nh5 13. Qxh5 Nxe5 14. Bxe5 b5 15. c4 {Bieker,P (1983) -Mendonça,P (1848) ICCF 2012 1-0}) (3... h6 4. Nc3 a6 5. Nf3 Nf6 6. Bd3 b5 7. Ne4 Nxe4 8. Bxe4 Ra7 9. Bxb8 d5 10. Bxa7 dxe4 11. Nd2 c4 12. Qh5 Qc7 13. Bc5 Bxc5 14. Qxc5 Qxc5 15. dxc5 {Gil Zepeda,C-Estrada Gordillo,A ICCF 2018 1-0 (25) }) 4. exd4 Qb6 5. b3 (5. Nc3 a6 (5... Nf6 6. a3 Be7 7. b4 O-O 8. Nf3 d6 9. Be2 Bd7 10. O-O Rc8 11. Bd2 Bc6 12. Be1 Bxf3 13. Bxf3 d5 14. Na4 Qc6 15. c3 Nbd7 16. Rc1 Nb6 17. Nxb6 {MacMillen,A (1725)-Laudati,L (1729) ICCF 2016 0-1 (46)}) 6. Rb1 d5 7. Bd3 Nc6 8. Nf3 Bd7 9. O-O Nf6 10. Ne2 Nh5 11. Be3 Nb4 12. Ne5 Nf6 13. Nf4 Nxd3 14. Nfxd3 Qc7 15. Rc1 Bd6 16. c4 dxc4 {Engels,J (1902)-Dahm,W (2070) ICCF 2019 1/2-1/2 (34)}) 5... Nf6 (5... d5 6. Nf3 Nf6 7. Bd3 Nc6 8. O-O Bd7 9. c3 Be7 10. h3 O-O 11. Nbd2 Rfc8 12. Rc1 a5 13. Ne5 Be8 14. Qe2 Nxe5 15. Bxe5 Nd7 16. Bf4 a4 17. b4 {Nielsen,J (1977)-Ross,D (1920) ICCF 2015 1-0 (31)}) 6. c3 (6. Bc4 Bd6 7. Bxd6 Qxd6 8. Nf3 b5 9. Be2 O-O 10. O-O a6 11. c4 Bb7 12. cxb5 axb5 13. Bxb5 Bxf3 14. Qxf3 Qxd4 15. Qxa8 Qxa1 16. Nd2 Qd4 17. Nf3 Qb6 { Bredenhof,B (2181)-Brusiani,A (1947) ICCF 2012 1/2-1/2 (28)}) 6... Nc6 7. Nf3 Be7 8. h3 Nd5 9. Bh2 O-O 10. Bd3 f5 11. O-O Nf6 12. Nbd2 d5 13. b4 Ne4 { Gavrijski,D (2032)-Tsonev,B (1986) ICCF 2017 1-0 (46)}) (2. d5 exd5 3. Qxd5 Nf6 4. Bg5 (4. Qe5+ Be7 5. Nc3 Nc6 6. Qe3 d5 7. Nb5 a6 8. Nc3 d4 9. Qg3 dxc3 10. a3 O-O 11. Bh6 Nh5 12. Qxc3 gxh6 13. Rd1 Qe8 14. g3 Bf6 15. Qc5 Ng7 {Goodhand, I-Brooks,I (1586) ICCF 2017 0-1 (54)}) 4... Nxd5 5. Bxd8 Kxd8 6. Nc3 Bb4 7. a3 Bxc3+ 8. bxc3 Nxc3 9. Kd2 Ne4+ 10. Ke1 Nc6 11. Nf3 d6 12. Rd1 Ke7 13. c4 Be6 { Melman,N-Lagarejos Gonzalez,E ICCF 2009 0-1 (44)}) (2. Nf3 Bb4+ (2... h6 3. Nc3 (3. e3 a6 4. Bd3 Nf6 5. Nbd2 Bb4 6. c3 Be7 7. O-O O-O 8. e4 d6 9. Qe2 Bd7 10. e5 dxe5 11. dxe5 Ne8 12. Rd1 Ba4 13. Nb3 Bxb3 14. Bh7+ Kxh7 {Anderson,J (1753) -Armstrong,J (1610) ICCF 2016 1-0 (34)}) 3... Bd6 4. a3 (4. g3 Nf6 5. Bf4 Bxf4 6. gxf4 b6 7. e4 Bb7 8. Bg2 Nh5 9. Ne5 Nxf4 10. Bf3 Nc6 11. O-O Nxe5 12. dxe5 Qg5+ 13. Bg4 h5 14. Qf3 hxg4 15. h4 gxf3+ {Magill,R (1185)-Kruse,P (1571) ICCF 2020 0-1 (30)}) 4... Nf6 5. e4 b6 6. e5 Be7 7. exf6 Bxf6 8. Ne4 Be7 9. Ne5 d6 10. Nxf7 Kxf7 11. Qf3+ Kg6 12. Bd3 Bf6 13. Nxd6# {1-0 (13) Brown,S (1616) -Kruse,P (1622) ICCF 2020}) (2... b6 3. e3 (3. Nc3 Bb7 (3... f5 4. g3 Nf6 5. Bg5 Bb7 6. Bg2 Be7 7. O-O O-O 8. Ne5 Bxg2 9. Kxg2 d6 10. Nd3 Qd7 11. f3 Nc6 12. Bxf6 Bxf6 13. e3 a5 14. Nf4 d5 {Moen,K (1735)-Gaujens,A (2265) ICCF 2013 0-1 (25)}) 4. e3 d5 (4... Bb4 5. Bd2 Nf6 6. g3 O-O 7. Bg2 d6 8. O-O Nbd7 9. a3 Bxc3 {0-1 (9) Boukadoum,M-Korab,B (1712) ICCF 2019}) 5. Bd3 Nf6 6. O-O Nbd7 7. a3 c5 8. Re1 c4 9. Be2 Bd6 10. b3 Ne4 11. Bb2 Nxc3 12. Bxc3 b5 13. b4 O-O 14. g3 f6 { Burton,S (2014)-Picken,R (1755) ICCF 2015 0-1 (40)}) (3. Bf4 Ba6 4. e3 Bxf1 5. Rxf1 Nf6 6. Qd3 d5 7. Nc3 Be7 8. Nb5 Na6 9. O-O-O O-O 10. Ng5 h6 11. Nf3 c5 12. Ne5 Nb4 13. Qe2 Nxa2+ 14. Kb1 a6 {Traxler,A-Enochs,J ICCF 2006 0-1}) (3. Bg5 f6 (3... Be7 4. Bxe7 Qxe7 5. e3 Bb7 6. Be2 Qb4+ 7. Nc3 Qxb2 8. Nb5 Qb4+ 9. c3 Qa5 10. Nxc7+ Kd8 11. Nxa8 Bxa8 12. O-O Nf6 13. Qb3 Qf5 14. Ne5 Nd5 15. e4 { Weggen,R (1848)-Mayes,F (1616) ICCF 2013 1-0 (25)}) 4. Bf4 Bb7 5. Nbd2 Ne7 6. e4 Ng6 7. Bg3 Be7 8. Bd3 O-O 9. O-O d6 10. c4 Nd7 11. Re1 e5 12. d5 a5 13. Nh4 Nxh4 14. Bxh4 Qe8 {Bapple,E-Catania,D (1747) ICCF 2009 1/2-1/2 (29)}) 3... f5 ( 3... Be7 4. Ne5 Bf6 5. Qf3 c6 6. Nc4 Qe7 7. Nc3 d5 8. Nd2 Qd6 9. Nb3 Ne7 10. Bd3 Nd7 11. Ne2 e5 12. Qg3 Qb8 13. c3 exd4 14. exd4 Qxg3 15. Nxg3 {Krucay, J-Klein,J (1550) ICCF 2013 1-0 (60)}) 4. Be2 Bb7 5. O-O Nf6 6. b3 g6 7. Bb2 Bg7 8. Nbd2 O-O 9. c4 Ne4 10. Qc2 d6 11. Rac1 Nd7 12. Ne1 Bh6 13. d5 Ndf6 14. Nxe4 {MacMillen,A (1861)-Wettering,G (1972) ICCF 2006 0-1 (34)}) (2... d6 3. c4 (3. Nc3 Nc6 4. e3 Be7 5. Bb5 Bd7 6. e4 Nb8 7. Bc4 Nf6 {0-1 (7) Hernáez Altuna, A-Moïse Hernáez,P ICCF 2011}) (3. Bf4 Nc6 4. e3 Nf6 5. c4 Ne4 6. Bd3 f5 7. Qc2 Nb4 8. Qa4+ Bd7 9. Qxb4 a5 10. Qxb7 Rb8 11. Qa7 Rxb2 12. Bxe4 fxe4 13. Nfd2 Be7 14. Nxe4 Rb4 {Morley,I (1380)-Sutcliffe,P (1458) ICCF 2019 1-0 (25)}) 3... b6 ( 3... h6 4. e4 a6 5. Nc3 Bd7 6. Be2 Be7 7. O-O Nf6 8. e5 dxe5 9. dxe5 Nh7 10. Be3 (10. Qb3 Bc6 11. Rd1 Qc8 12. Nd4 Bg5 13. Nd5 exd5 14. cxd5 Bd7 15. e6 fxe6 16. dxe6 Bc6 17. Bh5+ Ke7 18. Nxc6+ bxc6 19. Qb4+ Kf6 20. Qd4+ Ke7 21. Qxg7+ Kxe6 {Cumming,D (2313)-Armstrong,J (1588) ICCF 2014 1-0}) 10... O-O 11. Qc2 Re8 12. Rad1 Qc8 13. Qc1 Bc6 14. Nd4 Bg5 15. f4 {Blake,M (2199)-Armstrong,J (1610) ICCF 2016 1-0 (32)}) 4. Nc3 a6 5. e4 h6 6. Bd3 Nd7 7. Bf4 Ne7 8. O-O g6 9. e5 Bb7 10. exd6 cxd6 11. Bxd6 Nf5 12. Bxf8 Nxf8 13. Be4 Bxe4 14. Nxe4 {Poupinel,M (1882)-Soldano,G (2251) ICCF 2018 1-0 (46)}) (2... b5 3. a3 f5 4. Bd2 Nf6 5. Nc3 a6 6. e3 Bb7 7. b4 d6 8. Be2 Ne4 9. O-O Nd7 10. Bd3 e5 11. dxe5 dxe5 12. Ne1 Nxd2 13. Qxd2 Nf6 14. Qe2 {Burton,S (2014)-Illingworth,J ICCF 2015 0-1 (31) }) (2... g6 3. Bf4 (3. a3 Bg7 4. Bg5 Ne7 5. Nbd2 O-O 6. e3 Qe8 7. Bxe7 Qxe7 8. Be2 b6 9. O-O Bb7 10. c4 d6 11. Bd3 Nd7 12. Be4 Bxe4 13. Nxe4 d5 14. Ned2 Nf6 { Hardwick,M (1168)-Armstrong,J (1484) ICCF 2018 0-1 (67)}) (3. e3 b6 4. Bd3 Bb7 5. O-O Bg7 6. Nbd2 Nf6 7. b3 O-O 8. Bb2 d5 9. Qe2 Qc8 10. c4 dxc4 11. Nxc4 Ba6 12. Rac1 Nd5 13. Qd2 Nc6 14. e4 Nde7 {Price,D (2001)-Armstrong,J (1618) ICCF 2009 1-0 (42)}) (3. Bg5 Nf6 4. Nbd2 Bg7 5. e4 h6 6. Be3 Nc6 7. h3 O-O 8. c3 b6 9. Bd3 Bb7 10. O-O h5 11. Qc2 a5 12. e5 Nd5 13. Bg5 Qe8 14. Ne4 d6 {Roson Arellano,X-Santamaría Quintana,I (1408) ICCF 2012 1-0}) 3... Bg7 4. Nc3 (4. e3 Nf6 5. h3 O-O 6. Bd3 {1-0 (6) Chhangte,L-Vorster,A ICCF 2016}) 4... Nf6 5. Qd2 Nc6 6. Bh6 Bxh6 7. Qxh6 Rg8 8. e4 Ne7 9. Qd2 d6 10. Be2 b6 11. e5 dxe5 12. Nxe5 Bb7 13. f3 Nf5 14. O-O-O {Miller,S-Armstrong,J (1618) ICCF 2009 0-1 (35)}) ( 2... Na6 3. a3 h6 4. c4 c5 5. e3 b6 6. Nc3 d5 7. cxd5 exd5 8. Bxa6 Bxa6 9. Qa4+ b5 10. Qxa6 cxd4 11. Qc6+ Ke7 12. Nxd5+ Qxd5 13. Qxd5 Rd8 14. Qe5+ {Snokowski, M-Navara,E (1546) ICCF 2012 1-0 (28)}) (2... Be7 3. e4 Nf6 4. Bd3 a6 5. O-O Ng4 6. h3 Nf6 7. c4 O-O 8. Qc2 Bb4 9. e5 Ne8 10. Bxh7+ Kh8 11. Be4 g6 12. Nc3 c6 13. Qd2 g5 14. Nxg5 {Agnäs,T (1790)-Rodríguez Padilla,N ICCF 2013 1-0}) (2... f6 3. e4 e5 4. Nc3 Bd6 5. Bc4 Nc6 6. O-O exd4 7. Nxd4 Qe7 8. Be3 Qe5 9. f4 Qa5 10. Qe1 g5 11. Ncb5 Bb4 12. c3 Bd6 13. Nxd6+ {Ventaja Jiménez,M-Alichniewicz,J ICCF 2017 1-0}) 3. c3 Ba5 (3... Bd6 4. e3 (4. e4 Nf6 5. e5 O-O 6. exd6 cxd6 7. Bf4 Qe7 8. Nbd2 Nc6 9. Bg5 h6 10. Bh4 g5 11. Nxg5 hxg5 12. Bxg5 b6 13. Qf3 e5 14. Bxf6 Qe6 15. Qg3+ Kh7 {Wegelin,R (2160)-Britton,C ICCF 2005 1-0}) 4... Nc6 5. Bd3 Nf6 6. O-O b5 7. Nbd2 Ng4 8. Re1 a5 9. e4 b4 10. e5 f5 11. exd6 cxd6 12. Bxf5 Nf6 13. Nc4 O-O 14. Bc2 d5 15. Nce5 {Fraser,J-Chavez,A ICCF 2017 1-0}) ( 3... Be7 4. e4 d5 5. e5 Nc6 6. Bd3 h5 7. Nbd2 b6 8. O-O a5 9. Bb5 Bb7 10. Qa4 Qd7 11. Re1 g5 12. Nf1 g4 13. Ng5 h4 14. f4 gxf3 15. Nxf3 {Bapple,E-Owens,J (1300) ICCF 2009 1/2-1/2 (49)}) 4. Bg5 (4. e4 Nf6 5. Bd3 O-O 6. e5 Nd5 7. Bxh7+ Kxh7 8. Ng5+ Kg8 9. Qh5 Re8 10. Qxf7+ Kh8 11. Qh5+ Kg8 12. Qh7+ Kf8 13. Qh8+ Ke7 14. Qxg7# {1-0 (14) Ovalle,C-Law,L ICCF 2011}) 4... f6 5. Bf4 Nc6 6. e4 Qe7 7. Nbd2 d5 8. Bd3 dxe4 9. Bxe4 f5 10. Bxc6+ bxc6 11. Qa4 Qd7 12. Qxa5 Nf6 13. Qxc7 g5 {Bertaggia,M-Lucci,M ICCF 2016 1-0 (46)}) (2. Nc3 Bb4 (2... b6 3. Bf4 Bb7 4. e3 Nf6 5. f3 Bb4 6. Nge2 O-O 7. Qd3 d6 8. a3 Bxc3+ 9. Nxc3 Nbd7 10. Qd2 e5 11. dxe5 dxe5 12. Bg5 Qe8 13. e4 h6 14. Bh4 {Lewis,J (1672)-Catania,D (1747) ICCF 2011 0-1 (58)}) (2... c5 3. d5 exd5 4. Nxd5 Nf6 5. e4 Be7 6. Bf4 d6 7. Nxe7 Qxe7 8. Bxd6 Qxe4+ 9. Qe2 Be6 10. Bxc5 Qd5 11. Qb5+ Nbd7 12. Be3 Rc8 13. c3 O-O 14. Nf3 {Sitar,A (1942)-Jaksa,C (1970) ICCF 2012 1/2-1/2}) (2... Ne7 3. Nf3 Nf5 4. e4 Bb4 5. exf5 d5 6. fxe6 Bxc3+ 7. bxc3 fxe6 8. Bd3 O-O 9. O-O Nd7 10. c4 Nf6 11. h3 Qe7 12. Bb2 Nh5 13. Ne5 Qg5 14. Qg4 {Hiltunen,V-Johansson,R (1666) ICCF 2011 1-0 (56)}) 3. Bd2 f5 (3... Nf6 4. f3 d5 5. e4 Bxc3 6. Bxc3 dxe4 7. f4 Nd5 8. Bd2 f5 9. g4 Qh4+ 10. Ke2 Qxg4+ 11. Ke1 Qh4+ 12. Ke2 Nxf4+ 13. Bxf4 Qxf4 14. Nh3 Qf3+ 15. Kd2 {Tarrant,J (1657)-Moran,R (1797) ICCF 2019 0-1 (35)}) 4. e4 Bxc3 5. Bxc3 fxe4 6. Qh5+ g6 7. Qe5 Nf6 8. d5 O-O 9. O-O-O exd5 10. Rxd5 Nc6 11. Qg5 d6 12. Rd1 Be6 13. Bb5 a6 {Krumov,S-Krüger,J ICCF 2007 0-1}) (2. e3 Nc6 (2... a6 3. Bd3 b5 4. b3 Bb7 5. Nf3 f5 6. Nbd2 Nf6 7. Bb2 Be7 8. O-O O-O 9. Qe2 Ne4 10. c4 b4 11. Rac1 a5 12. d5 Nxd2 13. Qxd2 Na6 14. e4 {Domenche Redondo,F (1800)-Hernández Delgado,J (1889) ICCF 2015 0-1 (25)}) ( 2... Be7 3. Nf3 d5 4. c4 c6 5. Nc3 Bb4 6. Bd2 Nf6 7. cxd5 cxd5 8. a3 Be7 9. Bd3 O-O 10. O-O Nbd7 11. Re1 b6 12. Qc2 Bb7 13. Ng5 Ne4 14. Ngxe4 {Richards,M (1473)-Hardwick,M (1343) ICCF 2016 1-0 (57)}) (2... Nh6 3. Bd3 Nc6 4. Nf3 Nb4 5. e4 d6 6. Nc3 Be7 7. Bxh6 gxh6 8. Qd2 e5 9. O-O-O exd4 10. Nd5 Bf8 11. Qxb4 c6 12. Qxd4 Bg7 13. Qxg7 Rf8 14. Nf6+ {Ruggenenti,L-Fabbiani,T ICCF 2021 1-0}) (2... d6 3. Nf3 a6 4. Bd3 h6 5. O-O Nd7 6. c4 b6 7. Nc3 Ne7 8. Be4 c6 9. d5 cxd5 10. cxd5 e5 11. Nd2 Bb7 12. f4 g6 13. Nc4 Nc5 14. fxe5 {Jacon,M (1746) -Soldano,G (2251) ICCF 2018 1-0}) 3. Bd3 (3. a3 Nf6 4. Bd3 d5 5. Nc3 e5 6. dxe5 Nxe5 7. h3 c6 8. Nf3 Nxd3+ 9. cxd3 Bf5 10. O-O Be7 11. Ne5 Qc7 12. d4 O-O 13. b4 Bd6 14. f4 Ne4 {Gosling,D-Lloyd,G (2258) ICCF 2006 0-1 (32)}) (3. Nf3 Qf6 ( 3... d6 4. Bd3 g6 5. O-O Nge7 6. b3 Bg7 7. Bb2 O-O 8. Nbd2 b6 9. c4 Bb7 10. Rb1 a5 11. d5 Nb4 12. Qe2 Nxa2 13. Bxg7 Kxg7 14. dxe6 Nc3 15. Qe1 {Kraut,M (1523) -Cassell,R ICCF 2016 0-1}) 4. a3 Nh6 5. Bd3 d5 6. O-O Bd6 7. c4 g5 8. cxd5 exd5 9. g3 Bg4 10. Nbd2 Bxf3 11. Nxf3 g4 12. Nh4 O-O 13. Qb3 Na5 14. Qc2 c5 { Domingos Andrade,J-Rocha,F ICCF 2009 1-0}) (3. d5 Bb4+ 4. c3 Ba5 5. dxc6 dxc6 6. Qg4 Nf6 7. Qxg7 Rg8 8. Qh6 Qd6 9. Qxf6 Rg6 10. Qh8+ Qf8 11. Qxh7 Qg8 12. Qxg8+ {1-0 (12) Foddis,A-Rossini,S ICCF 2018}) 3... Nf6 4. f4 b6 5. Ne2 Bb4+ 6. c3 Be7 7. O-O g6 8. b4 d5 9. Nd2 Bd6 10. b5 Na5 11. Nb3 Nb7 12. a4 h6 13. Ba3 g5 {White,R (1554)-O'Hare,A (1601) ICCF 2016 1-0 (32)}) (2. g3 c5 (2... Ne7 3. c4 Nec6 4. Nf3 Qf6 5. Nc3 e5 6. Nd5 Qd8 7. dxe5 d6 8. Bg5 dxe5 9. Bxd8 Kxd8 10. Nb6+ Bd7 11. Nxa8 b6 12. Bh3 Na6 13. Qxd7# {1-0 (13) Orolin,J (1899)-Labák,T ICCF 2010}) (2... Nf6 3. c3 Nc6 4. f3 d5 5. a3 h6 6. Qc2 Bd6 7. a4 e5 8. dxe5 Nxe5 9. e3 Qe7 10. h3 Ng6 11. Qg2 Bd7 12. f4 Bc6 13. f5 Ne5 14. b3 {Cottrell,J (1567)-Chandar,M (1594) ICCF 2018 0-1 (37)}) 3. d5 (3. e4 cxd4 4. Na3 Bxa3 5. bxa3 Nc6 6. Ne2 Qa5+ 7. Qd2 Qxd2+ 8. Bxd2 b6 9. f3 Nge7 10. c3 d3 11. Nd4 Ba6 12. a4 Nxd4 13. cxd4 d5 14. Rc1 Kd7 {Clancey,J (1793)-Caliguire,J (2150) ICCF 2019 0-1}) 3... exd5 4. Qxd5 Nf6 5. Qd1 d5 6. Nf3 Nc6 7. Bg2 Be7 8. O-O O-O 9. e3 Bg4 10. Nbd2 Ne4 11. h3 Be6 12. Qe2 Qc8 13. Kh2 f5 {McLaughlin,E (1515) -Caliguire,J (2157) ICCF 2020 0-1 (31)}) (2. Nd2 c5 (2... f5 3. e4 fxe4 4. Nxe4 Nf6 5. Bd3 b6 6. Qf3 d5 7. Nxf6+ Qxf6 8. c3 Qxf3 9. Nxf3 Bd6 10. O-O O-O 11. Bd2 c5 12. Rfe1 Nc6 13. Rac1 Bd7 14. Ng5 {McLaughlin,E (1515)-Berger,B (1804) ICCF 2020 1/2-1/2 (41)}) (2... Bd6 3. e4 Nf6 4. e5 O-O 5. exf6 Qxf6 6. Ne4 Qh4 7. Nxd6 cxd6 8. Nf3 Qh5 9. Bd3 d5 10. O-O d6 11. Bf4 a5 12. Bxd6 Ra6 13. Bxb8 e5 14. Nxe5 {McLaughlin,E (1681)-Howard,J ICCF 2014 1-0 (31)}) 3. e3 cxd4 4. exd4 d5 5. f4 Nc6 6. Ngf3 Nf6 7. c3 Bd6 8. Ne5 O-O (8... Bxe5 9. fxe5 Ne4 10. Nxe4 dxe4 11. Qg4 g6 12. Qxe4 Bd7 13. Be2 Qc7 14. Bg5 Ne7 15. O-O Bc6 16. Qf4 Nd5 17. Qd2 a6 18. c4 Nb6 19. Rac1 h6 20. Bf6 {Zaas,P-Catania,D (1747) ICCF 2009 1-0}) 9. Bd3 Bd7 10. O-O Be8 11. g4 Nd7 12. Rf3 f6 13. Nxc6 bxc6 { McLaughlin,E (1681)-Verbera,M ICCF 2014 1-0}) (2. h4 c5 (2... g6 3. Bg5 f6 4. Bf4 g5 5. hxg5 Bb4+ 6. c3 Be7 7. gxf6 Bxf6 8. e3 d6 9. Bb5+ c6 10. Ba4 h6 11. Rh5 b5 12. Bc2 Bb7 13. Qg4 Qd7 14. Bg6+ {Atepor,E-Boison,R ICCF 2006 0-1}) 3. d5 exd5 4. Qxd5 Nf6 5. Qb3 d5 6. Bf4 Nc6 7. Nf3 c4 8. Qe3+ Be7 9. Qc1 Bg4 10. e3 O-O 11. Be2 Ne4 12. Nbd2 Nb4 13. O-O Qb6 {Green,M (2061)-Klajnscak,B ICCF 2016 1-0 (38)}) (2. b3 d5 3. g3 Nf6 4. Nf3 Nbd7 5. e3 b6 6. Nbd2 Bd6 7. Bb2 O-O 8. Bg2 c5 9. O-O Bb7 10. c4 cxd4 11. Nxd4 Rc8 12. Qe2 Ba6 13. Rac1 Qe7 { Korenman,M-Trasciatti,M (2203) ICCF 2018 0-1 (28)}) (2. Bd2 Nf6 3. Nf3 Nc6 4. Nc3 a6 5. e3 b5 6. e4 Bb4 7. a3 Ba5 8. b4 Bb6 9. d5 Ng4 10. h3 Nxf2 11. Qe2 Nxh1 12. O-O-O Nd4 13. Be3 Nxe2+ {Magill,R (1343)-Safari Nejad,R (1687) ICCF 2016 0-1 (32)}) (2. Qd3 Nc6 3. c3 Nf6 4. Nf3 b6 5. Bg5 Be7 6. Nbd2 Bb7 7. Bxf6 Bxf6 8. e4 d6 9. Be2 O-O 10. O-O Ne7 11. Qe3 c5 12. dxc5 bxc5 13. Nb3 Ng6 { Ziman,S (1660)-Procházková,M (1871) ICCF 2013 0-1 (59)}) (2. f3 c5 3. e4 cxd4 4. Qxd4 Nc6 5. Qf2 Nf6 6. a3 d5 7. exd5 exd5 8. Bd3 Bd6 9. Nc3 O-O 10. Bg5 h6 11. Bxf6 Qxf6 12. Nge2 Rd8 13. O-O-O Bc7 {Jarecki,M (2073)-Skorna,U (2246) ICCF 2014 0-1}) 2... b6 (2... Bb4+ 3. Nd2 (3. Nc3 c5 (3... Bxc3+ 4. bxc3 h6 5. Nf3 Nf6 6. e3 c6 7. Bd3 Qa5 8. Qc2 b6 9. O-O Bb7 10. Bb2 c5 11. Rfe1 Bxf3 12. gxf3 Nc6 13. e4 cxd4 14. cxd4 Nh5 {0-1 (14) Gesang,C-Kruse,P ICCF 2019}) 4. e3 (4. a3 Bxc3+ 5. bxc3 Nc6 6. Nf3 f5 7. d5 Na5 8. Qa4 Ke7 9. Bg5+ Nf6 10. e3 d6 11. Bd3 h6 12. Bxf6+ Kxf6 13. Qc2 Qe8 14. O-O e5 15. e4 f4 {Blankenship, J-Disque,P ICCF 2015 0-1}) (4. Qc2 cxd4 5. Bd2 dxc3 6. bxc3 Bc5 7. Nf3 Nf6 8. Bg5 h6 9. Bh4 Nc6 10. e3 b6 11. Be2 Bb7 12. h3 Bd6 13. Qd3 Qc7 14. Rd1 Ke7 15. Bxf6+ gxf6 {Paulus,K (1597)-Nyberg,W (2364) ICCF 2015 0-1}) 4... Nc6 5. Nf3 (5. Nge2 cxd4 (5... d5 6. cxd5 exd5 7. a3 Bxc3+ 8. Nxc3 cxd4 9. exd4 Nge7 10. Bd3 Nxd4 11. O-O h6 12. Re1 O-O 13. Be3 Ndf5 14. Bxf5 Bxf5 15. Bc5 Re8 16. Bxe7 Rxe7 17. Qxd5 {Herbert,G (1967)-Cheek,C (1992) ICCF 2015 1/2-1/2}) 6. exd4 d5 7. cxd5 exd5 8. a3 Ba5 9. Nf4 Nf6 10. Bd3 O-O 11. O-O Re8 12. Be3 Bxc3 13. bxc3 Na5 14. h3 Bd7 15. Qf3 Bc6 16. Nh5 Nxh5 {Herbert,G (1930)-Williams,R (2246) ICCF 2014 1/2-1/2 (27)}) (5. a3 Bxc3+ 6. bxc3 d6 7. Nf3 Nf6 8. d5 Ne7 9. Be2 O-O 10. O-O e5 11. Qb3 Ng6 12. Re1 e4 13. Nd2 Re8 14. Bb2 Bg4 15. Bxg4 Nxg4 16. h3 N4e5 {Dawkins,A (1516)-Copsey,A (1921) ICCF 2015 0-1}) (5. dxc5 Bxc3+ 6. bxc3 Nf6 7. Nf3 Ne4 8. Nd4 O-O 9. Bd3 Nxc5 10. Bxh7+ Kxh7 11. Qh5+ Kg8 12. Qxc5 d6 13. Qb5 Ne5 14. O-O Qc7 15. Rd1 b6 16. e4 Bb7 {Pettersson,R (2054)-Smit,F (2074) ICCF 2014 1/2-1/2 (59)}) (5. d5 Ne5 6. Bd2 Nf6 7. Nf3 d6 8. a3 Ba5 9. Nxe5 dxe5 10. Bd3 O-O 11. O-O exd5 12. Nxd5 Bxd2 13. Qxd2 Be6 14. e4 Bxd5 15. exd5 Re8 16. f3 Qd6 {Schleef,H (1915)-Brusiani,A (1968) ICCF 2019 1/2-1/2 (25)} ) 5... Bxc3+ 6. bxc3 d6 7. dxc5 (7. Bd3 e5 8. d5 Na5 9. e4 Bg4 10. h3 Bd7 11. Nd2 Ne7 12. Qe2 h6 13. Rb1 O-O 14. h4 Kh8 15. h5 Ng8 16. g4 Nf6 17. g5 hxg5 18. Nb3 Nh7 {Deforel,J (2207)-Feldis,Y (2055) ICCF 2019 1/2-1/2}) 7... dxc5 8. Qxd8+ Kxd8 9. e4 e5 10. Bg5+ Kc7 11. h3 b6 12. Be2 Be6 13. Bh4 f6 14. Bg3 Nge7 {Hardwick,M (1495)-Cumming,D (2330) ICCF 2015 0-1 (37)}) (3. Bd2 a5 (3... Bxd2+ 4. Qxd2 (4. Nxd2 d6 (4... Qf6 5. Ngf3 c6 6. c5 Qf4 7. Nc4 a5 8. Nb6 {1-0 (8) Saxena,A (2188)-De,S ICCF 2018}) (4... Nf6 5. e4 d6 6. Bd3 O-O 7. Ne2 c5 8. d5 Nbd7 9. f4 b5 10. cxb5 exd5 11. exd5 Nb6 12. Rc1 Nfxd5 13. Nc4 Re8 14. Nxb6 axb6 15. Bxh7+ Kxh7 16. Qxd5 {Ridout,P (1487)-O'Keefe,M (1461) ICCF 2018 0-1}) 5. e3 Nf6 6. f3 O-O 7. g4 c5 8. Ne2 cxd4 9. Nxd4 e5 10. Nf5 Bxf5 11. gxf5 Na6 12. e4 Nh5 13. Qe2 Nb4 14. Kd1 Qb6 15. Nb3 Rfd8 {Ridout,P (1500)-Sheward,A (1912) ICCF 2018 0-1 (26)}) 4... Nf6 (4... d5 5. Nc3 (5. cxd5 exd5 6. Nf3 Nf6 7. Nc3 O-O 8. e3 Ne4 9. Nxe4 dxe4 10. Ne5 Qf6 11. Bc4 Be6 12. Qc2 Nc6 13. Nxc6 bxc6 14. O-O Qg6 15. Bxe6 Qxe6 16. Rfc1 Rae8 {Osuna Osuna,F (1561)-Pedersen,H (1360) ICCF 2013 1-0 (39)}) 5... dxc4 6. e3 f6 7. Bxc4 b6 8. f3 Ne7 9. Nge2 O-O 10. O-O a6 11. Nf4 Qd6 12. Ne4 f5 13. Nxd6 cxd6 14. Bxe6+ Bxe6 15. Nxe6 Rf6 16. d5 {Troncoso Flores,A-Scarabeli Candido,R ICCF 2008 1-0 (25)}) (4... b6 5. Nf3 f6 6. g3 Bb7 7. Nc3 Ne7 8. Bg2 O-O 9. O-O Ng6 10. Rfe1 Na6 11. a3 c5 12. e3 Rc8 13. Qd3 d6 14. Nb5 Ra8 15. Rad1 Nc7 16. Qb3 {Taylor,D-Rixon,A (1360) ICCF 2019 1-0 (68)}) (4... c6 5. Nf3 Nf6 6. g3 O-O 7. Bg2 Qe7 8. O-O c5 9. Nc3 cxd4 10. Nxd4 d5 11. cxd5 exd5 12. Nxd5 Nxd5 13. Bxd5 Qc5 14. Bg2 Nc6 15. Nxc6 bxc6 16. Rac1 {Heiermann,L (2023)-Babugeon,J (1854) ICCF 2013 1-0 (27)}) (4... f5 5. g3 Nf6 6. Bg2 O-O 7. Nf3 d6 8. O-O Ne4 9. Qc2 Nd7 10. Nc3 Nxc3 11. Qxc3 Nf6 12. Nd2 Rb8 13. e4 fxe4 14. Nxe4 b5 15. c5 b4 16. Qe3 {Gibas,T (1982)-Greig,S (2049) ICCF 2014 1/2-1/2 (45)}) (4... h6 5. Nf3 Nf6 6. Nc3 O-O 7. e4 d6 8. O-O-O Nbd7 9. e5 dxe5 10. dxe5 Nh7 11. h4 h5 12. Bd3 g6 13. Qh6 b6 14. Ng5 Nxg5 15. hxg5 Nxe5 16. Rxh5 {González Barcina,F (1984)-Santamaría Quintana,I (1481) ICCF 2010 1-0}) 5. Nc3 (5. e3 b6 6. Bd3 Bb7 7. Nf3 c5 8. O-O Bxf3 9. gxf3 cxd4 10. exd4 Nc6 11. Nc3 Nxd4 12. Nb5 Nxf3+ 13. Kh1 Nxd2 14. Nd6+ Ke7 15. Rfd1 Qc7 16. Nb5 Qf4 {Anderson,L (978)-Sheward,A (1840) ICCF 2017 0-1}) 5... d5 (5... O-O 6. e4 (6. Rc1 b6 7. e4 d5 8. cxd5 exd5 9. e5 Ne4 10. Qe3 Bf5 11. Nf3 c5 12. Bd3 Nc6 13. O-O cxd4 14. Nxd4 Nxd4 15. Qxd4 Nxc3 16. Rxc3 Be6 17. f4 f5 { Tee,J-Carter,M (2109) ICCF 2017 1-0 (33)}) (6. e3 b6 7. Nf3 Bb7 8. Be2 d6 9. Qc2 Nbd7 10. O-O Re8 11. Rfd1 c6 12. Rd2 h6 13. a3 Qc7 14. h3 Rac8 15. b4 a6 16. Rad1 d5 17. c5 b5 {Haak,G (2071)-Dekker,G (1576) ICCF 2017 1-0 (33)}) 6... d5 (6... Nc6 7. e5 Ne8 8. O-O-O b6 9. Nf3 Bb7 10. d5 exd5 11. cxd5 Nb4 12. Bc4 Ba6 13. Bxa6 Nxa6 14. h4 Nc5 15. Nd4 d6 16. e6 fxe6 17. b4 Na6 18. Nxe6 { Hernández Delgado,J (1878)-Planella Zabala,I ICCF 2013 1-0 (28)}) 7. cxd5 (7. e5 Ne4 8. Nxe4 dxe4 9. O-O-O b5 10. Ne2 bxc4 11. Nc3 Ba6 12. Nxe4 Qd5 13. Be2 Nc6 14. Bf3 Qb5 15. Nc3 Qb6 16. Bxc6 Qxc6 17. d5 exd5 18. Nxd5 Kh8 {Andersson, H (2172)-Laine,J (2223) ICCF 2014 0-1}) 7... exd5 8. e5 Ne4 9. Nxe4 dxe4 10. Bc4 c5 11. dxc5 Qe7 12. Qd6 Qg5 13. Ne2 Nc6 14. e6 Bxe6 15. Bxe6 Ne5 16. O-O Rad8 17. Qc7 {Lattacher,W-Balzanelli,A ICCF 2009 0-1 (47)}) (5... d6 6. e4 O-O 7. f4 e5 8. dxe5 dxe5 9. Qxd8 Rxd8 10. fxe5 Ng4 11. Nf3 Nc6 12. Nd5 Rd7 13. Rd1 h6 14. Be2 Ngxe5 15. c5 a6 16. a4 Kf8 17. h3 {Friis,J (2238)-Cintins,I (2349) ICCF 2014 1/2-1/2 (30)}) 6. e3 (6. Rc1 O-O 7. Nf3 Qe7 8. a3 Rd8 9. e3 dxc4 10. Bxc4 c5 11. O-O Nc6 12. Rfd1 b6 13. Qe1 cxd4 14. exd4 Bb7 15. d5 exd5 16. Nxd5 Qxe1+ 17. Nxe1 Nxd5 {Bevans,P (1424)-Neumann,E ICCF 2016 1/2-1/2}) 6... O-O ( 6... Nbd7 7. cxd5 exd5 8. Bd3 b6 9. Nge2 Bb7 10. O-O O-O 11. Nf4 Re8 12. b4 c6 13. Be2 h6 14. Rfc1 g5 15. Nd3 Qe7 16. a3 a5 17. Qb2 Kg7 18. h3 {Gibbons,A (2113)-Carter,M (2109) ICCF 2017 1-0 (46)}) (6... dxc4 7. Bxc4 Nd5 8. Nf3 Nxc3 9. Qxc3 O-O 10. Bd3 {1-0 (10) Bueno,T (2269)-Scarabeli Candido,R ICCF 2008}) 7. cxd5 (7. Rc1 Qe7 8. cxd5 exd5 9. Bd3 b6 10. Nge2 Bb7 11. O-O Nbd7 12. Nf4 c6 13. f3 Rfe8 14. Rfe1 Rad8 15. g4 Nf8 16. g5 N6d7 17. h4 Ne6 18. Nxe6 Qxe6 { Sugonyak,D (2095)-Baufays,H (2335) ICCF 2017 1/2-1/2 (49)}) 7... exd5 8. Bd3 Re8 (8... Qe7 9. Nge2 b6 (9... Nc6 10. O-O Nb4 11. Bb1 c6 12. f3 Na6 13. a3 Nc7 14. e4 dxe4 15. fxe4 c5 16. Ba2 cxd4 17. Nxd4 Rd8 18. Qf2 Bg4 19. h3 Be6 20. Nxe6 fxe6 21. Rac1 {Lehr,M (2202)-Quirk,M (1989) ICCF 2016 1-0 (46)}) 10. Nf4 Bb7 11. O-O-O c6 12. f3 Na6 13. h4 Rae8 14. Rhe1 Rd8 15. g4 Ne8 16. h5 Nd6 17. h6 g6 18. e4 dxe4 19. fxe4 Ne8 20. e5 {Heyser,D-Lagergren,H (1820) ICCF 2021 1-0 (44)}) (8... Nc6 9. Nge2 Ne7 10. Qc2 c6 11. O-O Re8 12. b4 Qd6 13. Rfb1 g6 14. h3 Nf5 15. Rb3 a6 16. Qc1 Qe6 17. Na4 Nd6 18. Nb6 Rb8 19. a4 Nd7 20. Nxc8 Rbxc8 {Sodomski,A (2344)-Alfaro de Hombre,J (2340) ICCF 2020 1/2-1/2 (39)}) 9. Nge2 Nbd7 10. O-O c6 11. Rad1 (11. Rae1 Nf8 12. f3 Ne6 13. Kh1 c5 14. dxc5 Nxc5 15. Bb5 Bd7 16. Bxd7 Ncxd7 17. Nf4 Nb6 18. b3 Qe7 19. Nb5 a6 20. Nd4 Rac8 21. g4 g6 22. Kg2 Nfd7 {Ragnarsson,J (2045)-Kempen,L (2016) ICCF 2014 1/2-1/2 (59)} ) (11. f3 b5 (11... a5 12. a4 Nf8 13. e4 dxe4 14. fxe4 c5 15. e5 Ng4 16. Qf4 cxd4 17. Qxf7+ Kh8 18. Nb5 Bd7 19. Nd6 Qh4 20. h3 Nxe5 21. Qb3 Re6 22. Qxb7 Rd8 23. Qc7 {Ghosh,A (2102)-Greig,S (2164) ICCF 2014 1/2-1/2 (54)}) 12. Rac1 Nb6 13. b3 Qe7 14. Nd1 Bd7 15. Nf4 a5 16. Re1 a4 17. Bc2 Qa3 18. Nf2 h6 19. Bd1 axb3 20. axb3 Qd6 21. Bc2 Rac8 22. N2d3 Bf5 {Armani,G (1907)-Vahvaselkä,J (2075) ICCF 2016 1-0 (55)}) 11... b5 12. Qc2 Bb7 13. Rfe1 Qe7 14. h3 a5 15. Ng3 {Deforel,J (2059)-Vahvaselkä,J (2032) ICCF 2017 1-0 (31)}) (3... c5 4. Bxb4 (4. Nf3 Bxd2+ 5. Qxd2 cxd4 6. Nxd4 Nf6 7. Nc3 O-O 8. e4 d5 9. e5 Ne4 10. Nxe4 dxe4 11. Be2 Qc7 12. f4 exf3 13. Nxf3 Nc6 14. Qc3 b6 15. O-O Bb7 {Cacas,A (1648) -Pradeilles,G (1767) ICCF 2019 0-1 (40)}) 4... cxb4 5. Nd2 (5. e4 d5 6. Nd2 Nc6 7. Ngf3 dxe4 8. Nxe4 f5 9. Ng3 Nf6 10. Qd3 O-O 11. Be2 Qc7 12. Rd1 e5 13. dxe5 Nxe5 14. Nxe5 Qxe5 15. Qd4 Qxd4 16. Rxd4 Be6 {Andersson,K (1900)-Knöppel,B (1977) ICCF 2014 1/2-1/2}) (5. Nf3 Ne7 6. Nbd2 O-O 7. e3 d6 8. Bd3 h6 9. Rc1 Re8 10. O-O e5 11. Qa4 exd4 12. exd4 Na6 13. Qb3 Be6 14. Rfe1 Qb6 15. Qa4 Rac8 16. Ne4 Red8 {Tudor,V (1792)-Reimhagen,M (1774) ICCF 2011 1/2-1/2 (35)}) 5... Qb6 (5... Nf6 6. e4 d6 7. Qa4+ Nc6 8. d5 Qa5 9. Qxa5 Nxa5 10. Ngf3 b6 11. Bd3 O-O 12. a3 bxa3 13. b4 Nb7 14. Rxa3 a5 15. O-O Bd7 16. Rfa1 Rab8 17. Rb3 { Straka,J (2034)-Vahvaselkä,J (2006) ICCF 2017 1/2-1/2 (42)}) 6. c5 Qa5 7. Nc4 { 1-0 (7) Mai,W-Atepor,E ICCF 2006}) (3... Qe7 4. e4 (4. e3 b6 5. Qf3 (5. Qg4 f5 6. Qh5+ g6 7. Qf3 Nc6 8. Nc3 Bb7 9. a3 Bd6 10. Qd1 Nf6 11. b4 Qg7 12. Nb5 a6 13. Nxd6+ cxd6 14. Nf3 O-O 15. Rc1 Ne4 16. Be2 Rac8 {Knez,D-Gavrilovic,M ICCF 2005 0-1 (28)}) 5... Nc6 6. a3 Bxd2+ 7. Nxd2 f5 8. Qg3 d6 9. f4 e5 10. fxe5 dxe5 11. d5 f4 12. Qf2 fxe3 13. Qxe3 Nd4 14. Bd3 Nh6 15. Ngf3 Ng4 {Gavrilovic, M-Hrzica,R ICCF 2005 1-0 (35)}) (4. a3 Bxd2+ 5. Qxd2 f5 6. Nf3 Nf6 7. Nc3 O-O 8. g3 d6 9. Bg2 c6 10. O-O Nbd7 11. b4 e5 12. dxe5 Nxe5 13. Nxe5 dxe5 14. c5 Rd8 15. Qc2 e4 {Tibbert,P (1738)-Copsey,A (1823) ICCF 2014 0-1 (47)}) (4. Nc3 Nf6 5. e3 Nc6 6. Nf3 d5 7. a3 Bxc3 8. Bxc3 O-O 9. Rc1 Rd8 10. Qc2 a5 11. Be2 b6 12. cxd5 exd5 13. Bd2 Rd6 14. b4 axb4 15. axb4 Ne4 {Elwood,D (1706)-Miner,D ICCF 2018 1-0}) (4. Bxb4 Qxb4+ 5. Qd2 Nc6 6. Nf3 Qxd2+ 7. Nbxd2 Nb4 8. Kd1 Nf6 9. e3 Ng4 10. Ne4 f5 11. Ned2 Nxf2+ 12. Kc1 Nxh1 13. Ne1 Nf2 14. a3 Nc6 15. Ndf3 b6 {Hardwick,M (1524)-Copsey,A (1861) ICCF 2014 0-1 (38)}) 4... Nf6 (4... d5 5. a3 Bxd2+ 6. Nxd2 dxe4 7. Nxe4 Nf6 8. Bd3 Nc6 9. Nf3 O-O 10. Qc2 h6 11. O-O Rd8 12. Qc3 Nh5 13. Bc2 f5 14. Ng3 Nxg3 15. fxg3 Qf6 16. Rad1 {Lauer,R (1961)-Stubbs,M (2030) ICCF 2012 1-0 (35)}) (4... Nc6 5. Nf3 d5 6. e5 Bxd2+ 7. Qxd2 dxc4 8. Nc3 Nh6 (8... Na5 9. d5 b6 10. d6 cxd6 11. exd6 Qd8 12. Nb5 Kf8 13. Nc7 Rb8 14. Rd1 Nf6 15. Be2 Bb7 16. Qf4 Bxf3 17. Bxf3 Qd7 18. O-O h5 19. Rfe1 Rh6 {0-1 (19) Solari,A (2493)-Yui Pineda,G (2268) ICCF 2007}) 9. Bxc4 O-O 10. a3 b6 11. O-O Bb7 12. Rad1 Na5 13. Be2 Rad8 14. Qc2 Kh8 15. Rfe1 Bxf3 16. Bxf3 {Grego,L (2025)-Chemerys,R (1859) ICCF 2010 1-0 (31)}) 5. Bd3 (5. e5 Ne4 6. Nf3 b6 7. Bd3 Nxd2 8. Nbxd2 Bb7 9. O-O Bxd2 10. Nxd2 Nc6 11. Be4 O-O-O 12. Nf3 g5 13. Rc1 Kb8 14. Qd2 g4 15. Ne1 h5 16. Nc2 d6 {Tafner,E (1740)-Dopazo Vega,R ICCF 2016 0-1 (35)}) 5... Bxd2+ (5... Nc6 6. Nf3 a5 7. O-O O-O 8. e5 Bxd2 9. exf6 Qxf6 10. Qxd2 h6 11. Nc3 Nxd4 12. Nxd4 Kh8 13. Nf3 b6 14. Be4 d6 15. Bxa8 Ba6 16. Be4 Bxc4 17. Rfe1 {Caridi,N (1645)-Sánchez Villacanas,J ICCF 2007 1-0 (25)}) 6. Qxd2 d6 7. Nc3 O-O (7... e5 8. Nge2 O-O 9. O-O Nc6 10. dxe5 Nxe5 11. b3 Bg4 12. f3 Bd7 13. Bc2 Ng6 14. Rae1 Rae8 15. f4 Qd8 16. h3 a6 17. Ng3 b5 18. a3 bxc4 19. bxc4 {Debowski,S-Probola,R (2205) ICCF 2015 1-0 (31)}) 8. Nf3 e5 9. dxe5 dxe5 10. h3 Nbd7 11. Rd1 Re8 12. O-O a5 13. Nd5 Qd6 14. Qc3 Nc5 15. Rfe1 {Abdulmanov,E (2260)-Kolek,P (2236) ICCF 2014 1-0 (62)}) (3... Be7 4. Nc3 (4. e4 d5 5. cxd5 exd5 6. e5 c5 7. Bb5+ Bd7 8. Bxd7+ Qxd7 9. Ne2 Nc6 10. Bc3 f6 11. exf6 Nxf6 12. O-O c4 13. Nd2 b5 14. a3 O-O 15. Nf3 Bd6 {Snezhko, A-Saevich,Y (2159) ICCF 2019 0-1}) 4... d5 (4... Nf6 5. e3 O-O 6. Bd3 b6 7. Nf3 d6 8. d5 Bb7 9. e4 Nbd7 10. O-O Nc5 11. Bc2 c6 12. b4 Ncd7 13. Bf4 e5 14. Be3 Ng4 15. Bd2 Ndf6 16. h3 {Jatmiko,T-Rodriguez,E ICCF 2016 1-0 (30)}) 5. Qc2 (5. e3 Nf6 6. Be2 O-O 7. Nf3 b6 8. O-O Bb7 9. cxd5 exd5 10. Qb3 Nbd7 11. Ne5 c5 12. f4 Rc8 13. Rac1 a6 14. a4 Nb8 15. Bf3 cxd4 16. exd4 Nc6 {Urban,M (2274)-Benes, J (2057) ICCF 2016 1/2-1/2 (45)}) 5... Nf6 6. cxd5 exd5 7. Bf4 Nh5 8. Be5 Nc6 9. e3 Nxe5 10. dxe5 g6 11. Be2 Ng7 12. e4 d4 13. Nd5 Ne6 14. g3 c6 15. Nxe7 { Chazalette,J (2371)-Heilala,T (2299) ICCF 2018 1/2-1/2 (41)}) (3... Nc6 4. Bxb4 Nxb4 5. Nc3 Nf6 6. Nf3 O-O 7. e3 d5 8. cxd5 exd5 9. a3 Nc6 10. Be2 Bf5 11. O-O Ne4 12. Rc1 Qd6 13. Re1 Rae8 14. Qb3 Nxc3 15. Qxc3 {Segreto,T (1679)-Bruce,G ICCF 2016 1-0 (37)}) 4. Nf3 (4. Nc3 Nf6 (4... Bxc3 5. Bxc3 Nc6 6. d5 exd5 7. Bxg7 dxc4 8. Bxh8 f6 9. Qd5 Kf8 10. e3 Nce7 11. Qh5 h6 12. Bxc4 d5 13. Rd1 c6 14. Bd3 Qd6 15. h3 Qb4+ 16. Rd2 {Deforel,J (2247)-Pedersen,H (1353) ICCF 2014 1-0}) (4... f5 5. e3 Nf6 6. a3 Bxc3 7. Bxc3 O-O 8. Bd3 b6 9. Ne2 Qe8 10. O-O d6 11. b4 Nbd7 12. f3 Ba6 13. Qd2 Qe7 14. Ng3 g6 15. e4 fxe4 16. fxe4 {Yatsenko,L (2137)-Quanzaah,E (2081) ICCF 2020 1-0 (34)}) 5. e4 (5. Bg5 h6 6. Bh4 b6 7. Nf3 Bb7 8. e3 g5 9. Bg3 Ne4 10. Rc1 h5 11. h3 Nxg3 12. fxg3 Qf6 13. Nd2 Qg7 14. Qe2 f5 15. a3 Bd6 16. g4 hxg4 {Allport,A (1820)-Dudeney,P (2089) ICCF 2017 0-1}) ( 5. e3 O-O 6. a3 Bxc3 7. Bxc3 b6 {0-1 (7) Król,P (1821)-Schreurs,B ICCF 2015}) ( 5. g3 d5 6. Nf3 dxc4 7. Bg2 {1-0 (7) Straaten,M-Schafranietz,S ICCF 2015}) 5... d5 6. e5 Ne4 7. Nxe4 (7. cxd5 exd5 (7... Nxd2 8. Qxd2 exd5 9. a3 Bxc3 10. Qxc3 O-O 11. Rc1 c6 12. Bd3 Bg4 13. f3 Bh5 14. Ne2 Na6 15. Bxa6 Rxa6 16. O-O a4 17. Ng3 Bg6 18. f4 f5 19. Rc2 {Amico,R (2348)-Brusiani,A (1979) ICCF 2018 1-0 (47)} ) 8. Bd3 Nxd2 9. Qxd2 Nc6 (9... c5 10. a3 cxd4 11. axb4 dxc3 12. bxc3 O-O 13. f4 f6 14. exf6 Rxf6 15. Ne2 Qb6 16. Rxa5 Rxa5 17. bxa5 Qxa5 18. O-O Qc5+ 19. Kh1 Nc6 20. Nd4 Nxd4 21. cxd4 {Pheby,I (2278)-Cheek,C (2086) ICCF 2015 1/2-1/2 (32)}) 10. Nge2 f6 11. a3 Bxc3 12. Qxc3 fxe5 13. dxe5 d4 14. Qc4 Qe7 15. f4 Be6 16. Qb5 O-O-O 17. O-O Rd5 18. Qa4 Rhd8 {Ovalle,C (1997)-Peled,S (2040) ICCF 2015 1-0 (36)}) (7. a3 Qh4 8. Nh3 Nxd2 9. Qxd2 Bxc3 10. bxc3 Qe4+ 11. Qe3 Qxe3+ 12. fxe3 dxc4 13. Bxc4 O-O 14. Rf1 b6 15. g4 Nc6 16. Bd3 Ba6 17. Bxa6 Rxa6 18. a4 Raa8 {Holloway,J-Chromczak,T (1872) ICCF 2015 1-0 (93)}) (7. Nf3 O-O 8. a3 Bxc3 9. bxc3 b6 10. cxd5 exd5 11. Bd3 Ba6 12. Bxa6 Nxa6 13. O-O c6 14. Ne1 Nc7 15. f3 Nxd2 16. Qxd2 f6 17. Nd3 f5 18. a4 Ne6 {Bailey,M-Brusiani,A (1968) ICCF 2019 1-0 (57)}) 7... dxe4 8. a3 Bxd2+ 9. Qxd2 O-O (9... c5 10. d5 O-O 11. f4 f6 12. O-O-O fxe5 13. fxe5 Qc7 14. Qc3 Nd7 15. d6 Qd8 16. h4 Rf5 17. Be2 Rxe5 18. h5 Rf5 19. h6 Qf6 20. Qc2 Qe5 21. hxg7 {Gleichmann,M (2525)-Kögler,K (2527) ICCF 2013 1/2-1/2 (42)}) 10. Qe3 (10. O-O-O b5 11. cxb5 c6 12. Kb1 cxb5 13. Bxb5 Qb6 14. Ba4 Rd8 15. Ne2 Ba6 16. Bc2 Nc6 17. Bxe4 Rab8 18. Bxc6 Qxc6 19. Nc3 Qb7 20. Na4 Rbc8 21. Qxa5 Be2 {Campbell,E (2220)-Cheek,C (2086) ICCF 2015 1/2-1/2 (54)}) 10... f5 11. exf6 Qxf6 12. Ne2 Nc6 13. Rd1 Bd7 14. Rd2 Rad8 15. Ng3 Ne7 {Drenthen,A (1975)-Vahvaselkä,J (2068) ICCF 2015 1/2-1/2 (67)}) (4. a3 Bxd2+ 5. Qxd2 (5. Nxd2 d6 6. e3 Nf6 7. Bd3 O-O 8. Ne2 Nc6 9. h3 e5 10. O-O Re8 11. Re1 Bd7 12. Qc2 a4 13. Rab1 h6 14. Rbd1 Qe7 15. Qc1 Nh5 16. Bb1 f5 { Cannon,A (2166)-Dawson,A (2194) ICCF 2018 1/2-1/2 (49)}) 5... Nf6 (5... d6 6. Nc3 Nc6 7. Nf3 Nf6 8. Rd1 (8. e4 e5 9. dxe5 dxe5 10. Qxd8+ Kxd8 11. O-O-O+ Bd7 12. g4 h6 13. Rg1 Kc8 14. g5 hxg5 15. Rxg5 g6 16. Nxe5 Nh7 17. Nxg6 fxg6 18. Rxg6 Nf8 19. Rg7 Nb8 {Celestini,M (2123)-Relyea,A (2108) ICCF 2015 1/2-1/2 (41) }) 8... O-O 9. e3 Re8 10. Be2 Bd7 11. O-O e5 12. Qc2 Bg4 13. b3 exd4 14. Nxd4 Nxd4 15. Rxd4 Bxe2 16. Qxe2 h6 17. Rfd1 {Nouveau,L (2305)-Peled,S (2157) ICCF 2016 1/2-1/2 (63)}) (5... f5 6. Nc3 Nf6 7. e3 O-O 8. Bd3 b6 9. Nge2 Nc6 10. O-O Bb7 11. f3 Qe7 12. Rae1 Rac8 13. Nf4 Kh8 14. Rd1 g5 15. Nfe2 g4 16. f4 Qg7 17. d5 {Mary,P (2450)-Owen,K (2376) ICCF 2013 1/2-1/2 (29)}) 6. Nc3 d6 7. e3 (7. e4 e5 8. dxe5 dxe5 9. Qxd8+ Kxd8 10. Nf3 Nbd7 11. Rd1 Ke7 12. Nd5+ {1-0 (12) Joachimsthaler,K (2013)-Eklund,J (1983) ICCF 2016}) (7. Nf3 O-O 8. e4 Nc6 9. Rd1 Qe7 10. Bd3 (10. Be2 e5 11. dxe5 Nxe5 12. Nd4 Ng6 13. f3 Bd7 14. O-O Rfe8 15. g3 Qe5 16. Nd5 Nxd5 17. cxd5 c6 18. dxc6 bxc6 19. f4 Qf6 20. Rf2 Rab8 21. Bf1 Nf8 {Sukhanitskij,S (2169)-Dawson,A (2183) ICCF 2018 1/2-1/2 (28)}) 10... e5 11. dxe5 Nxe5 12. Nxe5 dxe5 13. Nd5 Nxd5 14. cxd5 c6 15. O-O cxd5 16. exd5 Qd6 17. Bb5 Bf5 18. h3 Rfc8 {Jean,P (1884)-Cintins,I (2349) ICCF 2014 1/2-1/2 (25)}) 7... O-O 8. Bd3 Nc6 (8... e5 9. Nge2 Nc6 10. O-O Re8 11. f3 (11. Rae1 Bd7 12. Bc2 Ne7 13. Ng3 exd4 14. exd4 c6 15. Qd3 Ng6 16. Rxe8+ Qxe8 17. Qd2 Qd8 18. Re1 Be6 19. d5 cxd5 20. cxd5 Bd7 21. h3 Ne5 22. Bf5 g6 {Williamson,D (2162) -Cheek,C (2086) ICCF 2015 1-0 (57)}) (11. d5 Ne7 12. Ng3 c6 13. Nge4 Nxe4 14. Bxe4 cxd5 15. Nxd5 Be6 16. Rfd1 Nxd5 17. Bxd5 Qb6 18. Bxe6 Rxe6 19. a4 Rc8 20. b3 Rg6 21. Qc2 Qc6 22. e4 Qe8 {Wimmer,R (2073)-Yüce,A (2071) ICCF 2015 1-0 (51) }) 11... Bd7 12. Rfe1 a4 13. Bc2 g6 14. Ng3 Na5 15. Qd3 Nb3 16. Rad1 Qe7 17. Nge4 Nxe4 18. Nxe4 Kg7 19. Nc3 Bc6 20. Bxb3 {Ramos Rodríguez,P (2101) -Vahvaselkä,J (2033) ICCF 2019 1-0 (41)}) (8... Re8 9. Nge2 e5 10. O-O b6 11. d5 Nbd7 12. Bc2 Ba6 13. b3 Qe7 14. Ng3 g6 15. Rae1 h5 16. f4 h4 17. Nh1 Qf8 18. f5 Qh6 19. Nf2 Rf8 20. Qe2 {Emourlov,E (2098)-Babecki,B (1968) ICCF 2019 1/2-1/ 2}) 9. Nge2 b6 10. O-O Bb7 11. Rad1 h6 12. Rfe1 a4 13. Qc1 Qd7 14. Bc2 Ne7 15. e4 Qc6 {Mirkowski,P (2369)-Andersen,J (2303) ICCF 2016 1/2-1/2 (79)}) (4. e4 d5 (4... d6 5. Nf3 Nf6 6. Bd3 e5 7. a3 Bxd2+ 8. Nbxd2 O-O 9. O-O Nh5 10. Re1 Nf4 11. Bf1 Qf6 12. d5 a4 13. Rc1 b6 14. Re3 Qg6 15. Nh4 Qg5 16. g3 {Mora Collao, F-Neumann,E (1780) ICCF 2020 1-0}) 5. a3 (5. cxd5 exd5 6. Qa4+ Bd7 7. Bb5 c6 8. Bd3 dxe4 9. Bxb4 exd3 10. Bd2 Qe7+ 11. Be3 Bf5 12. Nf3 Nf6 13. O-O O-O 14. Nc3 Nbd7 15. Qd1 h6 16. Ne1 Ng4 {Gutta,S-Mroczek,M ICCF 2013 0-1 (38)}) 5... Bxd2+ 6. Nxd2 dxe4 7. Nxe4 Nf6 8. Nc3 O-O 9. Nf3 b6 10. Be2 Bb7 11. O-O Nbd7 12. Re1 Ne4 13. Nxe4 Bxe4 14. Bd3 Bxd3 15. Qxd3 c6 {Perrin,R (1950)-Greig,S (2049) ICCF 2014 1/2-1/2}) (4. g3 d6 5. Bg2 e5 6. dxe5 dxe5 7. Nc3 Nf6 8. Nf3 Nc6 9. O-O O-O 10. a3 Bxc3 11. Bxc3 Qe7 12. b4 Rd8 13. Qc2 axb4 14. axb4 Rxa1 15. Rxa1 e4 {Serner,A (2441)-Vahvaselkä,J (2053) ICCF 2015 1-0 (49)}) 4... d6 (4... d5 5. a3 Be7 6. Nc3 Nf6 7. Bf4 O-O 8. e3 b6 9. Qc2 Ba6 10. Ne5 Qc8 11. Be2 dxc4 12. Nxc4 Nd5 13. Bg3 Nd7 14. O-O c5 15. dxc5 Qxc5 16. Ne4 {Wettstein,K (2304) -Depasse,J (2321) ICCF 2015 1/2-1/2 (28)}) 5. g3 Nc6 (5... b6 6. Bg2 Bb7 7. O-O Qe7 8. Nc3 Bxc3 9. Bxc3 Nf6 10. Nd2 Bxg2 11. Kxg2 c5 12. e4 e5 13. dxe5 dxe5 14. Nf3 Nc6 15. Qa4 Qd7 16. Qb5 Qb7 17. Nxe5 {Martín Hernández,V-Martínez Molina,J ICCF 2014 1-0 (40)}) 6. Bg2 (6. Nc3 Nf6 7. Qc2 (7. Bg2 e5 8. a3 Bxc3 9. Bxc3 Ne4 10. Nxe5 Nxc3 11. Nxc6 Nxd1 12. Nxd8 Nxb2 13. Nxb7 Ra7 14. O-O Nxc4 15. Rfc1 Bxb7 16. Rxc4 Bxg2 17. Kxg2 Rb7 18. Rc6 Kd7 {Freund,L (2238)-Peled,S (2052) ICCF 2014 1/2-1/2 (41)}) 7... O-O 8. Bg2 e5 9. dxe5 dxe5 10. Rd1 Qe7 11. Nd5 Nxd5 12. cxd5 Nd8 13. O-O Bd6 14. e4 c6 15. Rfe1 a4 16. a3 f6 17. Be3 cxd5 {Polyakov,D (2309)-Brusiani,A (2039) ICCF 2016 1-0 (65)}) (6. a3 Bxd2+ 7. Nbxd2 e5 8. d5 Nce7 9. b4 f5 10. Bg2 Nf6 11. O-O axb4 12. axb4 Rxa1 13. Qxa1 b5 14. cxb5 Nfxd5 15. Rc1 Qd7 16. Qa5 O-O 17. Nc4 Bb7 {Harman,K (1786)-Brusiani,A (2021) ICCF 2012 0-1 (29)}) 6... e5 (6... Bxd2+ 7. Qxd2 e5 8. Nc3 Bg4 9. dxe5 dxe5 10. Qe3 f6 11. Rd1 Qc8 12. Nd4 Nxd4 13. Rxd4 Nh6 14. Rd2 O-O 15. Nd5 Kh8 16. Qc3 Bh3 17. O-O Bxg2 18. Kxg2 {Hauenstein,H (2389)-Peled,S (2157) ICCF 2016 1/2-1/2 (30)}) 7. O-O (7. d5 Nce7 8. O-O Nf6 9. Nc3 O-O 10. Ne1 Bf5 11. Nc2 Qd7 12. a3 Bxc3 13. Bxc3 Ne4 14. Ne3 Nxc3 15. bxc3 Bh3 16. Qb3 b6 17. Qb5 Qc8 18. Bxh3 Qxh3 {Jarmuz,F (1874)-Greig,S (1984) ICCF 2013 0-1 (45)}) 7... exd4 8. Nxd4 Nxd4 9. Bxb4 axb4 10. Qxd4 Nf6 11. Rd1 (11. Qd2 c5 12. Rd1 Ra6 13. a4 (13. Qd3 Qe7 14. Nd2 Qe5 15. Rdb1 O-O 16. a3 Re8 17. e3 h6 18. axb4 Bf5 19. e4 Nxe4 20. Nxe4 Bxe4 21. Bxe4 Qxe4 22. Qxe4 Rxe4 23. bxc5 Rxc4 24. Rxa6 bxa6 { Corfield,J (2385)-Ellis,L (2297) ICCF 2013 1/2-1/2 (25)}) 13... O-O 14. b3 Re8 15. Qd3 Ng4 16. Nd2 Qe7 17. h3 Ne5 18. Qe4 Nc6 19. Qxe7 Rxe7 20. e3 Na5 21. Rab1 Bd7 22. Kh2 Ra8 {Blass,U (2602)-Kozlowski,W (2465) ICCF 2012 1/2-1/2 (50)} ) 11... Ra6 12. Nd2 (12. b3 O-O 13. a3 c5 14. Qb2 Qa5 15. a4 Re8 16. Qc2 Qc7 17. Re1 Bd7 18. Nd2 Bc6 19. e3 Bxg2 20. Kxg2 d5 21. Rac1 dxc4 22. Qxc4 Rd6 23. Qc2 Qc6+ {Baciak,M (2179)-Vahvaselkä,J (2006) ICCF 2017 1/2-1/2 (33)}) 12... Qe7 (12... O-O 13. Nf1 Nd7 14. Ne3 Nc5 15. b3 Re8 16. Qd2 Qg5 17. h4 Qe5 18. Qxb4 Be6 19. Qe1 Ne4 20. Bxe4 Qxe4 21. Qc3 Qg6 22. a4 Rc6 23. a5 Qh5 24. Qd3 { Rodolfo Masera,L (1814)-Brusiani,A (2017) ICCF 2015 1-0 (47)}) 13. Nf1 Qe5 14. Qd2 O-O 15. Ne3 h5 16. Bf3 g5 (16... g6 17. Rdb1 Rb6 18. a3 bxa3 19. Rxa3 Bf5 20. Nxf5 Qxf5 21. Rba1 Qc5 22. b3 Kg7 23. h4 Re8 24. e3 Ne4 25. Qc2 {1/2-1/2 (25) Bellmann,H (2483)-Löschnauer,R (2466) ICCF 2014}) 17. Rdb1 g4 18. Bg2 Bf5 19. Nxf5 Qxf5 20. Qxb4 Rxa2 21. Qxb7 Rfa8 22. Qxa8+ Rxa8 23. Rxa8+ Kg7 24. Raa1 Qc2 25. e3 Nh7 26. c5 Qxc5 27. Rc1 Qb6 28. Rc2 Ng5 29. Bd5 Nh3+ 30. Kg2 Kh6 31. Rac1 Qb5 32. Rd2 f5 33. Bc6 Qb4 34. Rc3 h4 35. Bd5 Qa5 36. Rd1 Qa4 37. Rcc1 Ng5 38. Rd4 Qb5 39. Rc2 h3+ 40. Kg1 Kg6 41. Rd1 Qa5 42. b3 Kf6 43. b4 Qa4 44. Rcc1 Ke5 45. Bh1 Ne4 46. Bxe4 Kxe4 47. Rd4+ Ke5 48. Rdc4 Ke6 49. e4 f4 50. Rxc7 Qxb4 51. R7c4 Qd2 52. gxf4 Qxf4 53. R4c3 Qd2 54. R3c2 Qb4 55. Kf1 Qd4 56. Rc3 { 1/2-1/2 (56) Dothan,Y (2594)-Peled,S (2052) ICCF 2014 Unusual replies to-1 d4}) 3... Nf6 (3... c5 4. dxc5 Nf6 5. a3 Bxc5 6. e3 b6 7. Ngf3 Be7 8. Bd3 O-O 9. O-O d5 10. b3 Bb7 11. Bb2 Nbd7 12. Qe2 dxc4 13. Bxc4 Ne8 14. e4 Nd6 15. Rfd1 { Wilkinson,J (2205)-Carter,M (2129) ICCF 2017 1/2-1/2 (48)}) 4. a3 (4. c5 d6 5. cxd6 cxd6 6. a3 Bxd2+ 7. Bxd2 Nbd7 8. e3 e5 9. Bb4 Qc7 10. dxe5 Nxe5 11. Bxd6 Qc6 12. Bxe5 Bg4 13. f3 Bf5 14. Rc1 Nd7 15. Rxc6 bxc6 {Bordon,S-Baron,M (1600) ICCF 2020 1-0}) 4... Be7 (4... Bxd2+ 5. Bxd2 (5. Qxd2 b6 6. f3 d5 7. e3 O-O 8. cxd5 exd5 9. Bd3 a5 10. Ne2 Bb7 11. O-O Nbd7 12. b3 Re8 13. Re1 Ba6 14. Bc2 c5 15. dxc5 bxc5 16. Nf4 d4 {Vugt,W (2233)-Etmans,M (2029) ICCF 2005 1-0 (33)}) 5... b6 6. Qc2 c5 (6... Bb7 7. f3 c5 8. O-O-O cxd4 9. Bb4 Nc6 10. Bd6 Rc8 11. Nh3 Nd5 12. Qa4 Na5 13. e4 Bc6 14. Qc2 Ne3 15. Qe2 Nxd1 16. Qxd1 Qf6 17. e5 Qh6+ 18. f4 {Monreal,E-Boucher,B (1763) ICCF 2020 0-1}) 7. dxc5 bxc5 8. Nf3 Bb7 9. e3 Ne4 10. b4 O-O 11. Bd3 f5 12. O-O Rf6 13. Bxe4 Bxe4 14. Qd1 a5 15. b5 Rg6 16. Ne1 {Höxter,H (2301)-Alfaro de Hombre,J (2340) ICCF 2020 1/2-1/2}) 5. e4 ( 5. e3 O-O 6. b4 d5 7. Bb2 a5 8. b5 c6 9. Ngf3 cxb5 10. cxb5 Nbd7 11. Bd3 b6 12. O-O Bb7 13. Rc1 Rc8 14. Qe2 Rxc1 15. Rxc1 Qb8 16. Qd1 g6 {Bonthuys,A-Sheward,A (1830) ICCF 2017 0-1 (31)}) 5... d5 (5... d6 6. Ne2 e5 7. d5 a5 8. Nc3 Nbd7 9. Rb1 Nc5 10. b4 Na6 11. Be2 Bd7 12. Qb3 O-O 13. O-O Re8 14. h3 axb4 15. axb4 c5 16. b5 Nb4 17. Re1 {Celsus,P-Sheward,A (1880) ICCF 2019 1-0 (51)}) 6. e5 Nfd7 7. Ngf3 (7. b4 a5 8. b5 c5 9. bxc6 Nxc6 10. Ngf3 f6 11. exf6 Bxf6 12. Bb2 O-O 13. h4 e5 14. cxd5 Nxd4 15. Ne4 Nxf3+ 16. gxf3 b6 17. Bc4 Nc5 18. Qe2 Na4 { Pavlícek,M (2292)-Baufays,H (2327) ICCF 2015 1-0 (33)}) 7... a5 8. cxd5 (8. Nb1 Nb6 9. c5 N6d7 10. Qc2 c6 11. Be3 b6 12. cxb6 Qxb6 13. Nc3 Ba6 14. Na4 Qb7 15. Bxa6 Qxa6 16. Rd1 Ra7 17. Rd3 c5 18. Nxc5 Nxc5 19. dxc5 a4 {Gonzalez Caraballo, Y-Dopazo Vega,R ICCF 2017 1/2-1/2}) 8... exd5 9. Nb1 c5 10. Nc3 Nc6 11. Nxd5 cxd4 12. e6 Nde5 13. exf7+ Nxf7 14. Bc4 {Ponjican,E (2242)-Westerman,H (2239) ICCF 2013 1/2-1/2 (25)}) (2... Nc6 3. Nc3 (3. a3 Nf6 4. Nc3 Be7 5. Bf4 a6 6. e4 O-O 7. e5 Ne8 8. Nf3 d5 9. h4 Na5 10. Bd3 f5 11. cxd5 exd5 12. b4 Nc6 13. Qc2 b5 14. Ne2 Bd7 {Pangaribuan,J (1793)-Krishna,P (1617) ICCF 2020 1-0 (27)}) (3. e3 Nh6 4. g3 Bb4+ 5. Bd2 Qf6 6. Bg2 Qg6 7. a3 Be7 8. d5 Ne5 9. dxe6 Nd3+ 10. Kf1 Nxb2 11. exd7+ Bxd7 12. Qb3 Bf6 13. Qxb7 O-O 14. e4 Nd1 {Calvo Muro, R-Tobella Torras,J ICCF 2007 1-0 (27)}) 3... Bb4 (3... a5 4. Nf3 Nf6 5. e4 Nxe4 6. Nxe4 d5 7. cxd5 Qxd5 8. Nc3 Bb4 9. Be3 e5 10. dxe5 Bxc3+ 11. bxc3 Be6 12. Qxd5 Bxd5 13. Be2 Bxf3 14. Bxf3 Nxe5 15. Bxb7 {Stone,S-Byrne,V ICCF 2008 1-0 (34)}) (3... Nxd4 4. Qxd4 f5 5. Nf3 d5 6. cxd5 c6 7. Bg5 Qd6 8. dxc6 bxc6 9. Rd1 Qxd4 10. Nxd4 Bb4 11. Nxc6 Bd6 12. Rxd6 a5 13. Rd8+ Kf7 14. Ne5# {1-0 (14) MacMillen,A (1725)-Spiliopoulos,V ICCF 2016}) 4. Nf3 (4. e3 b6 5. Bd2 Bb7 6. Nf3 Nce7 7. Bd3 f5 8. O-O Nf6 9. a3 Bxc3 10. Bxc3 O-O 11. Ng5 Ne4 12. Qh5 Nf6 13. Qh3 h6 14. Nf3 Ne4 15. Rac1 Qe8 {Santos Etxepare,A (2040)-Quattrocchi,G (2292) ICCF 2009 1/2-1/2 (42)}) 4... Bxc3+ (4... Na5 5. e4 Nf6 6. Bd3 c6 7. e5 Ng4 8. h3 f5 9. hxg4 {1-0 (9) Mba-Oyone,J (1842)-Cronjé,H (2199) ICCF 2020}) 5. bxc3 Nf6 6. Qc2 d6 7. e4 e5 8. Be2 O-O 9. dxe5 dxe5 10. Ba3 Re8 11. Rd1 Bd7 12. Nd2 b6 13. Nf1 Qc8 14. Ne3 {Uusitalo,J (2358)-Puzone,M (2407) ICCF 2013 1/2-1/ 2 (62)}) (2... b5 3. cxb5 Nf6 4. Nc3 (4. Nf3 Bb7 5. a3 a6 6. e3 Bd6 7. Nc3 O-O 8. Be2 Ne4 9. Bd2 Nxd2 10. Qxd2 axb5 11. Nxb5 Be7 12. O-O Bxf3 13. Bxf3 d5 14. Rfb1 c6 15. Nc3 Nd7 {Bucsa,I (2358)-Green,M (2070) ICCF 2018 1-0 (62)}) 4... d5 5. e3 Be7 6. Nf3 O-O 7. b3 c6 8. Bb2 Qa5 9. a3 cxb5 10. Bxb5 Ne4 11. Bd3 Ba6 12. b4 Nxc3 13. Bxc3 Qc7 14. Bb2 {Deforel,J (1915)-Green,M (2063) ICCF 2018 1/ 2-1/2 (73)}) (2... c6 3. Nc3 (3. Bf4 Na6 (3... Nf6 4. e3 Bb4+ 5. Nd2 Ne4 6. Ngf3 Qa5 7. a3 Bxd2+ 8. Nxd2 Nxd2 9. b4 Nf3+ 10. Qxf3 Qa4 11. Qg3 Rg8 12. Bd3 Na6 13. Bxh7 Qb3 14. O-O Qxc4 15. Bxg8 {Egelstaff,R (2087)-Safari Nejad,R (1687) ICCF 2016 1-0}) (3... a6 4. Nc3 b5 5. e4 g5 6. Be5 Nf6 7. Qf3 Bg7 8. c5 Bb7 9. Bd6 h5 10. h3 Bh6 11. e5 g4 12. Qxf6 Qxf6 13. exf6 a5 14. hxg4 Na6 15. Rxh5 {Klajnscak,B (1922)-Wójcik,L (1307) ICCF 2019 1-0}) 4. Nc3 d5 5. e3 Nf6 6. Nf3 Bb4 7. a3 Bxc3+ 8. bxc3 Ne4 9. Qc2 Qa5 10. Rc1 Qxa3 11. Bd3 O-O 12. c5 b6 13. O-O bxc5 14. Ra1 Qxc3 {Nozicka,V (1989)-Prikryl,V (1640) ICCF 2016 1-0 (54) }) (3. e4 d6 (3... Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 Qh4 6. e5 Nh6 7. Nc3 O-O 8. Nf3 Qg4 9. h3 Qg6 10. g4 f5 11. Nh4 Qf7 12. g5 Qe7 13. Qf4 Nf7 14. g6 hxg6 15. Nxg6 {Lisý,J (1854)-Klein,J (1672) ICCF 2011 1-0 (27)}) 4. Nf3 Be7 5. Nc3 b6 6. Bf4 Nf6 7. Be2 Bb7 8. O-O O-O 9. e5 Ne8 10. Bd3 d5 11. Qc2 g6 12. h3 Ng7 13. a3 Ba6 14. b3 Nd7 {Cumming,D (2294)-Longden,R (1719) ICCF 2012 1-0 (37)}) (3. Nf3 g6 4. e4 d6 5. Nc3 Nf6 6. Be2 e5 7. dxe5 Be7 8. exf6 Bxf6 9. Bh6 c5 10. Qd2 Qa5 11. Nd5 Qxd2+ 12. Nxd2 Bxb2 13. Rb1 Be5 14. Nc7+ Kd7 {Pradeilles,G-Whittle,P (1311) ICCF 2018 1-0}) 3... Qa5 (3... Bb4 4. e4 (4. Bd2 d6 5. Nf3 h6 6. g3 Nf6 7. Bg2 a6 8. O-O O-O 9. a3 Bxc3 10. Bxc3 Nbd7 11. Re1 Ne4 12. Rc1 Nb6 13. Ba5 c5 14. Qb3 Qf6 15. Qxb6 Qe7 {Procházková,M-Králiková,G ICCF 2010 1-0 (43)}) 4... Bxc3+ 5. bxc3 Qa5 6. Bd2 e5 7. Nf3 f6 8. Bd3 d6 9. h3 Ne7 10. O-O O-O 11. c5 dxc5 12. dxe5 fxe5 13. Nxe5 Ng6 14. Qb3+ Kh8 15. Nf7+ {Luk,L (1872)-Ozdemir, Z (1783) ICCF 2010 1-0}) 4. Bd2 (4. e3 Bb4 5. Bd2 Nf6 6. a3 Bd6 7. Nb5 Qxd2+ 8. Qxd2 cxb5 9. cxb5 Ne4 10. Qc2 Ng5 11. Qxc8+ Ke7 12. Qxh8 f5 13. Qxg7+ Nf7 14. Be2 h6 15. Bh5 Bc7 {Pihlajamäki,J (1574)-Sutcliffe,P (1505) ICCF 2018 1-0}) 4... Bb4 5. Qc2 Ne7 (5... Nf6 6. e3 O-O 7. Bd3 Qc7 8. a3 Bxc3 9. bxc3 e5 10. dxe5 Qxe5 11. Nf3 Qe8 12. Ng5 h6 13. Ne4 Nxe4 14. Bxe4 Qe6 15. Qd3 g6 16. Qd4 d6 17. Bf3 {Hardwick,M (1351)-Armstrong,J (1588) ICCF 2014 0-1 (51)}) 6. e3 O-O 7. Bd3 g6 8. Nf3 Na6 9. O-O Qc7 10. a3 Qb8 11. Qb3 Bd6 12. c5 Bc7 13. Bxa6 bxa6 14. Qxb8 {Hardwick,M (1351)-Armstrong,J (1588) ICCF 2014 0-1 (37)}) (2... h6 3. Nf3 (3. Nc3 b6 4. Nf3 Bb7 5. e4 d6 6. Bd3 Nd7 7. d5 e5 8. Qe2 Ngf6 9. Be3 Be7 10. O-O-O a5 11. Bc2 Nc5 12. g3 Bc8 13. h3 Bd7 14. Kb1 Qc8 {Grenard,G (2203) -Galatola,A ICCF 2021 (48)}) 3... c6 (3... d5 4. Nc3 (4. e3 Bb4+ 5. Bd2 Bxd2+ 6. Nbxd2 c6 7. Bd3 Nd7 8. Qb3 Qa5 9. O-O g5 10. Qc2 g4 11. Ne5 Nxe5 12. dxe5 Ne7 13. Rab1 h5 14. b4 Qc7 15. f4 h4 {Bátora,V-Sládek,J ICCF 2009 1-0 (29)}) 4... Bb4 5. Qb3 Nc6 6. e3 Nf6 7. cxd5 Bxc3+ 8. bxc3 Nxd5 9. Ba3 a6 10. c4 Nde7 11. Rd1 O-O 12. d5 exd5 13. cxd5 Nb8 14. Ne5 Nd7 15. Bxe7 {Fraga Vidal, R-Spínola,S (1626) ICCF 2012 1-0}) 4. e4 Nf6 5. e5 Ne4 6. Bd3 Qa5+ 7. Nbd2 Nxd2 8. Bxd2 Qb6 9. Rb1 Qd8 10. O-O g5 11. Bc3 g4 12. Nd2 h5 13. Ne4 d5 14. Nf6+ { Hasanagic,A (2114)-Silec,Z ICCF 2009 1-0 (28)}) (2... Ne7 3. d5 (3. Nf3 d5 4. Nc3 Bd7 5. e3 c6 6. Be2 Nf5 7. Qb3 b6 8. e4 dxe4 9. Nxe4 c5 10. d5 Bd6 11. Nxd6+ Nxd6 12. Bf4 Nb7 13. O-O-O O-O 14. dxe6 fxe6 {Smyth,S (1922)-Gosling,D (1429) ICCF 2017 1-0 (39)}) 3... e5 4. e3 c6 5. b4 a5 6. b5 c5 7. d6 Nf5 8. Nc3 Nxd6 9. Qh5 Qf6 10. Nd5 Qf5 11. Qxf5 Nxf5 12. Nc7+ Kd8 13. Nxa8 Be7 14. Bd2 { Joachimsthaler,K (2013)-Vaessen,J (1901) ICCF 2016 1-0 (37)}) (2... Qh4 3. e3 ( 3. Nc3 Bb4 4. e3 Nf6 5. Bd3 d5 6. Nf3 Qh5 7. O-O O-O 8. Bd2 Nc6 9. Nb5 Be7 10. Nxc7 Rb8 11. cxd5 exd5 12. h3 a6 13. Qb3 Na7 14. Ne5 h6 {Secondi,C (1813) -Lubinati,P ICCF 2019 1-0 (29)}) 3... Bb4+ 4. Bd2 Nc6 5. Nc3 Nf6 6. Be2 d5 7. cxd5 exd5 8. Rc1 Be6 9. g3 Qh6 10. e4 Qg6 11. exd5 Nxd4 12. dxe6 O-O-O 13. Qa4 Bc5 14. Qc4 {Heino,J (1521)-Jackson,M (1685) ICCF 2016 1-0 (34)}) (2... a5 3. Nc3 b6 4. e4 Bb7 5. Nf3 Nc6 6. a3 h6 7. Bd3 Bd6 8. e5 Be7 9. O-O Bg5 10. d5 Nxe5 11. Nxe5 Qf6 12. f4 O-O-O 13. Ne4 Qe7 14. d6 {Grineva,M-Byrne,V (1552) ICCF 2015 1-0 (26)}) (2... a6 3. Nc3 Bb4 4. Bd2 c6 5. Nf3 Nf6 6. a3 Bxc3 7. Bxc3 d5 8. e3 Nbd7 9. Bd3 c5 10. Qa4 O-O 11. h3 Nb6 12. Qb3 Bd7 13. Ba5 dxc4 14. Bxc4 {Yüzer,G-Aytas,B ICCF 2010 1-0}) (2... c5 3. Nc3 cxd4 4. Qxd4 Nc6 5. Qd3 Bb4 6. Nf3 Nf6 7. a3 Bxc3+ 8. Qxc3 h6 9. e3 d5 10. b4 {1-0 (10) Kince, J-Sládek,J ICCF 2009}) (2... Qe7 3. Nc3 Nc6 4. e4 f6 5. Be2 g6 6. Nf3 d6 7. O-O g5 8. d5 exd5 9. Nxd5 Qg7 10. Be3 Bg4 11. Nd4 Bxe2 12. Qxe2 Nxd4 13. Bxd4 c6 14. Qh5+ {Kalapos,K (1722)-Ziman,S (1660) ICCF 2013 1-0 (31)}) (2... Qf6 3. Nf3 Bb4+ 4. Nc3 b6 5. a3 Bxc3+ 6. bxc3 Ba6 7. e4 Nc6 8. Bg5 Qg6 9. Bd3 f6 10. Bf4 Qxg2 11. Rg1 Qh3 12. Rxg7 e5 13. Ng1 Qe6 14. d5 {Setya Adhi,B (1664)-Vaessen,J (1579) ICCF 2017 1-0}) (2... Be7 3. e4 Nf6 4. e5 Ne4 5. f3 Bb4+ 6. Ke2 Ng5 7. h4 Nxf3 {0-1 (7) Sawmynaden,R-Dutt,B (1514) ICCF 2016}) 3. e4 (3. a3 f5 (3... g6 4. Nc3 Bg7 5. Nf3 (5. e4 Ne7 6. Nf3 O-O 7. h4 d5 8. cxd5 exd5 9. h5 Nbc6 10. hxg6 hxg6 11. e5 Bg4 12. Be3 Nf5 13. Qd3 f6 14. Be2 fxe5 15. dxe5 Nxe3 16. fxe3 Bf5 {Orci,I (2299)-Barclay,A (2218) ICCF 2018 1/2-1/2 (34)}) 5... Bb7 (5... d6 6. e4 Ne7 7. Be3 O-O 8. h4 h5 9. Qc2 Nbc6 10. d5 Ne5 11. Nxe5 Bxe5 12. O-O-O exd5 13. cxd5 c5 14. dxc6 Nxc6 15. Bg5 Qe8 16. Bh6 Nd4 17. Qd3 {Kolarík,J (2360)-Baciak,M (2240) ICCF 2018 1-0 (60)}) (5... Ne7 6. h4 Nbc6 7. h5 Nf5 8. Bg5 f6 9. Bc1 Bb7 10. e4 Nd6 11. d5 Nb8 12. Bf4 e5 13. Be3 Na6 14. b4 f5 15. hxg6 hxg6 16. Bg5 Rxh1 17. Bxd8 {Henri,J (2357)-Davidson,J (2092) ICCF 2015 1-0 (41)}) 6. e4 Ne7 7. Bd3 (7. Be3 d6 8. h4 (8. Qd2 h6 9. O-O-O Nd7 10. Be2 Nf6 11. d5 e5 12. h3 Qd7 13. g4 O-O-O 14. g5 hxg5 15. Nxg5 Qe8 16. f4 Nh5 17. Bg4+ Kb8 18. fxe5 Bxe5 19. Rhf1 Nf6 {Masset,J (1868)-Clair,M (2168) ICCF 2013 1-0 (36)}) 8... d5 9. cxd5 exd5 10. e5 c5 11. dxc5 bxc5 12. Bxc5 Nd7 13. Bb5 O-O 14. Bd4 a6 15. Bxd7 Qxd7 16. O-O Qg4 17. Bc5 Rfe8 18. Bxe7 Rxe7 {Plas,R (2254)-Knöppel,B (2099) ICCF 2005 1-0 (50)}) (7. Be2 d6 (7... O-O 8. O-O d5 9. exd5 exd5 10. Bg5 f6 11. Bf4 g5 12. Bg3 g4 13. Nh4 f5 14. f3 f4 15. Bf2 g3 16. hxg3 fxg3 17. Bxg3 Nbc6 18. Bf2 Kh8 19. cxd5 {Cesetti,C (2467)-Burger,A (2483) ICCF 2006 1-0 (79)}) 8. O-O Nd7 9. Be3 O-O 10. Qc2 d5 11. cxd5 exd5 12. Bg5 dxe4 13. Nxe4 h6 14. Bh4 f5 15. Qc4+ Kh8 16. Nc3 Rc8 17. Rae1 g5 18. Bxg5 hxg5 {Reede,A (1942)-Deneuville,C (2250) ICCF 2009 1/2-1/2}) 7... d6 (7... O-O 8. O-O (8. d5 exd5 9. exd5 d6 10. Qc2 Nd7 11. h4 Nc5 12. h5 Nxd3+ 13. Qxd3 Nf5 14. hxg6 Re8+ 15. Ne4 fxg6 16. Bg5 Qd7 17. O-O-O Rf8 18. g4 Ne7 19. Bh6 Qxg4 { Wright,J (1844)-Catania,D (1720) ICCF 2015 0-1 (51)}) 8... d6 (8... f5 9. Re1 fxe4 10. Nxe4 Nf5 11. Bb1 Nc6 12. d5 Na5 13. Ba2 exd5 14. cxd5 d6 15. Neg5 Bc8 16. Rb1 Bf6 17. b4 Nb7 18. Ne6 Bxe6 19. dxe6 Qe7 20. g4 {Blankenship,J-Catania, D (1720) ICCF 2015 0-1}) 9. Bf4 Nd7 10. Qd2 Re8 11. Rfe1 a6 12. Qe3 e5 13. dxe5 Nxe5 14. Be2 c6 15. Rad1 Qc7 16. Ng5 {Greco,T-Catania,D (1720) ICCF 2015 0-1 (37)}) 8. Be3 Nd7 (8... O-O 9. Qd2 Re8 10. Bh6 Bh8 11. O-O Nd7 12. Rad1 a6 13. Bc2 c6 14. Qf4 e5 15. dxe5 Nxe5 16. Nxe5 Bxe5 17. Qh4 Nc8 18. Qxd8 Rxd8 19. f4 Bxc3 20. bxc3 {Atakisi,F (2491)-Schmitzer,K (2430) ICCF 2004 1/2-1/2 (55)}) 9. Qd2 h6 (9... O-O 10. O-O Nf6 11. h3 Nh5 12. d5 e5 13. Ne2 f5 14. exf5 Nxf5 15. Bg5 Qd7 16. Nc3 h6 17. Be3 g5 18. g4 Nd4 19. Nxd4 exd4 20. Bf5 Rxf5 21. Bxd4 { Pearce,A (1747)-Chomicki,H (2134) ICCF 2011 0-1}) (9... e5 10. d5 Bc8 11. O-O-O Rb8 12. h4 h6 13. Ne1 f5 14. exf5 gxf5 15. g3 Nc5 16. Bc2 Bd7 17. Ng2 Qc8 18. f4 e4 19. Bd4 Rg8 20. Ne3 Nd3+ 21. Bxd3 {Watkins,K (2288)-Burmeister,F (2294) ICCF 2019 0-1}) (9... a6 10. Rd1 e5 11. dxe5 Nxe5 12. Nxe5 Bxe5 13. O-O Bg7 14. Bh6 O-O 15. Bxg7 Kxg7 16. f4 Qd7 17. Bc2 Ng8 18. Rfe1 Rad8 19. Ba4 {Deforel,J (2207)-Burmeister,F (2206) ICCF 2019 1-0 (45)}) 10. d5 e5 (10... Nc5 11. Bc2 Ba6 12. b4 Nd7 13. Bd3 exd5 14. exd5 Ne5 15. Nxe5 dxe5 16. O-O Nf5 17. Bxf5 gxf5 18. b5 Bb7 19. f4 e4 20. Bd4 O-O 21. Rae1 {Englund,J (1879)-Wilson,G (1882) ICCF 2014 1-0 (60)}) 11. O-O-O a5 12. Kb1 Nc5 13. g4 Nxd3 14. Qxd3 Qd7 15. Rdg1 {Lindström,B (2372)-Vugt,W (2290) ICCF 2006 1/2-1/2 (34)}) (3... Bb7 4. Bf4 d6 5. Nc3 Nd7 6. Nf3 Ngf6 7. Qc2 a6 8. e4 Be7 9. Be2 O-O 10. e5 Ne8 11. h4 f6 12. exf6 Ndxf6 13. Ng5 Bc8 14. Bg4 e5 15. Bxc8 {Steinman,A (1868) -Catania,D (1747) ICCF 2010 1-0}) (3... Ba6 4. e4 Nc6 5. Nf3 Nf6 6. Bd3 g6 7. e5 Ng4 8. h3 Nxf2 9. Kxf2 h5 10. Nc3 Qe7 11. Bg5 f6 12. Bxg6+ Kd8 13. Bxf6 Nxd4 14. Bxe7+ Bxe7 15. Nxd4 {Pogliano Ventola,M (1743)-Limoli,P (1688) ICCF 2015 1-0 (27)}) 4. Nc3 (4. d5 Nf6 (4... Bd6 5. Nc3 Nf6 6. Nf3 O-O 7. Nb5 Qe7 8. g3 Ba6 9. Bg5 Bxb5 10. cxb5 h6 11. Bxf6 Qxf6 12. dxe6 dxe6 13. Bg2 Nd7 14. Qc2 e5 15. e4 Nc5 16. O-O {Mason,I (2226)-Jefferson,N (2181) ICCF 2014 1/2-1/2 (41)}) 5. g3 Bb7 6. Bg2 Na6 7. Nh3 Bd6 8. O-O O-O 9. b4 c6 (9... Ne4 10. dxe6 Qf6 11. Ra2 Qxe6 12. Qd3 Rae8 13. Rc2 Qf7 14. f3 Nf6 15. Qxf5 Qe7 16. Qg5 c5 17. b5 Nc7 18. e4 Ne6 19. Qd2 Be5 20. Qd3 a6 21. Nc3 {Sladek,V (2080)-Bristol,M (2176) ICCF 2007 1-0 (37)}) 10. dxe6 (10. b5 Nc5 11. dxc6 dxc6 12. bxc6 Ba6 13. Qc2 Qe8 14. Rd1 Rd8 15. Nc3 Bxc4 16. Rb1 Bd5 17. Nxd5 Nxd5 18. Bb2 Be7 19. Qc4 Qxc6 20. Nf4 Kh8 21. e3 Bf6 {Wallinger,M (2366)-Gaujens,A (2229) ICCF 2012 1-0 (59)} ) 10... dxe6 11. Qc2 Be5 12. Bb2 Bxb2 13. Qxb2 Qe7 14. Nc3 Rad8 15. Rfd1 e5 { Opitz,P (2209)-Mouron,D (2112) ICCF 2010 1/2-1/2 (26)}) (4. g3 Bb7 5. Nf3 Nf6 6. Bg2 Be7 7. O-O O-O 8. Nc3 Ne4 (8... a5 9. Qc2 Qe8 10. Bf4 Na6 11. d5 Qh5 12. Rad1 Bc5 13. h3 Rae8 14. dxe6 dxe6 15. Ne5 Bxg2 16. Kxg2 Bd6 17. Qc1 Nc5 18. f3 Nb3 19. Qc2 {Uygun,A (2055)-Gasanov,E ICCF 2009 1-0 (51)}) (8... Qe8 9. Bf4 Bd8 10. Qc2 Qh5 11. d5 exd5 12. cxd5 d6 13. Nd4 Bc8 14. Ncb5 g5 15. Bxd6 Re8 16. Bxc7 Bb7 17. Nd6 {1-0 (17) Marconi,R (1964)-Catania,D (1720) ICCF 2015}) 9. Qc2 (9. Nd2 Nxc3 10. bxc3 Nc6 11. d5 Na5 12. Re1 f4 13. e4 Bc5 14. Nf3 fxg3 15. hxg3 Nxc4 16. Bf1 exd5 17. exd5 Qf6 18. Bxc4 Qxc3 19. d6+ Qxc4 {0-1 (19) Arvidsson,D (1377)-Pradeilles,G (1719) ICCF 2018}) (9. Be3 Nxc3 10. bxc3 Bf6 11. Qd2 Nc6 12. d5 Na5 13. Qd3 Ba6 14. Nd2 Rb8 15. f4 Qe7 16. Bf2 exd5 17. Bxd5+ Kh8 18. Bd4 c6 19. Bf3 d5 20. Bxf6 Rxf6 {Lewis,J (1584)-Williams,J ICCF 2011 0-1 (46)}) 9... Bf6 (9... Nc6 10. Nxe4 fxe4 11. Qxe4 Qe8 12. Bf4 Bd6 13. Ng5 Rf5 14. Bxd6 cxd6 15. f4 d5 16. cxd5 Na5 17. Qd3 Bxd5 18. Bxd5 Rxg5 19. Bxa8 {1-0 (19) Holmes,R-Catania,D (1787) ICCF 2009}) 10. Ne5 d5 11. cxd5 exd5 12. f4 Nd7 13. b4 Rc8 14. Bb2 Kh8 15. Rad1 Qe7 {Hardicsay,P (2371)-Kupsys,A (2580) ICCF 2002 1/2-1/2 (63)}) 4... Nf6 5. g3 (5. Nf3 Bb7 6. d5 (6. Bf4 Be7 7. e3 (7. Nb5 d6 8. c5 bxc5 9. dxc5 e5 10. cxd6 cxd6 11. Nxd6+ Bxd6 12. Bxe5 Bxe5 13. Qxd8+ Kxd8 14. Nxe5 Ke7 15. Rc1 Nbd7 16. Rc7 Bd5 17. Nxd7 Nxd7 18. e3 Rhc8 {Sanchez,D-Nolan,R ICCF 2014 0-1 (25)}) 7... O-O (7... Nh5 8. g3 O-O 9. Bg2 Nxf4 10. exf4 Bf6 11. O-O Nc6 12. Qd3 Ne7 13. Rfe1 c6 14. Ne5 d6 15. Nf3 Qd7 16. Qe2 Ba6 17. Qxe6+ Qxe6 {Tseng,W (2361)-Gaujens,A (2222) ICCF 2011 1-0 (43)} ) 8. d5 (8. Be2 Nh5 (8... Ne4 9. Nxe4 fxe4 10. Nd2 Bf6 11. Qc2 Bxd4 12. Rd1 Na6 13. b4 Rxf4 14. exf4 e3 15. Nf3 exf2+ 16. Kf1 Bf6 17. h4 c5 18. Ng5 Bxg5 19. hxg5 g6 {Babic,D (2062)-Penca Kocjan,M ICCF 2012 1-0 (26)}) 9. O-O Nxf4 10. exf4 Bf6 11. Re1 Nc6 12. Qd3 Ne7 13. g3 c6 14. Rad1 Qc7 15. Bf1 Rad8 16. c5 bxc5 17. dxc5 Nd5 18. Nxd5 cxd5 19. b4 a6 {Nedoma,P (2417)-Grayland,S (2404) ICCF 2012 1/2-1/2 (53)}) (8. Bd3 Ne4 9. Bxe4 fxe4 10. Nd2 d5 11. O-O c6 12. b4 Nd7 13. Bg3 Kh8 14. h3 Qe8 15. Qb3 Qf7 16. a4 a5 17. bxa5 Rxa5 18. Qb2 h5 19. Bh2 {Semmelroth,H (2302)-Gaujens,A (2280) ICCF 2020 1/2-1/2 (34)}) 8... Ne4 9. Be2 Nxc3 10. bxc3 Na6 11. h4 Nc5 12. Bg5 Bf6 13. O-O Ne4 14. Bxf6 Qxf6 15. Bd3 Nc5 16. Be2 e5 17. Nh2 Qxh4 {Lead,B (1796)-Picken,R (1864) ICCF 2017 0-1 (37)}) (6. g3 Be7 (6... Ne4 7. Nxe4 Bxe4 8. Bh3 Be7 9. O-O Bb7 10. d5 O-O 11. Be3 Na6 12. b4 c5 13. dxc6 Bxc6 14. Rc1 Rc8 15. Nd4 Nb8 16. Qb3 Qe8 17. Rfd1 Rf7 18. Bf4 {Schiller,W (2261)-Deneuville,C (2268) ICCF 2009 1/2-1/2 (50)}) 7. Bg2 Ne4 (7... O-O 8. d5 Ne4 9. Nxe4 (9. O-O Nxc3 10. bxc3 Na6 11. a4 Nc5 12. a5 Bf6 13. Nd4 exd5 14. cxd5 Bxd4 15. cxd4 Ne4 16. f3 Nc3 17. Qd3 Nxd5 {Masset,J (1868) -Schulz,B (1920) ICCF 2013 1-0 (40)}) 9... fxe4 10. Nd2 exd5 11. cxd5 Bxd5 12. Nxe4 Bc6 13. O-O a5 14. Be3 Qe8 15. Qd3 a4 16. Nc3 Kh8 17. Rfd1 Bxg2 18. Kxg2 Ra5 19. Nd5 {Kögeler,A (2227)-Kappelhof,W (2338) ICCF 2019 1-0 (48)}) (7... Nc6 8. d5 Na5 9. Nd2 c5 10. O-O O-O 11. Rb1 Qc7 12. b3 a6 13. e4 Rae8 14. Bb2 f4 15. e5 Qxe5 16. b4 fxg3 17. hxg3 cxb4 18. axb4 Bxb4 19. Nce4 {Fedukin,A (2221) -Jaeger,F (2055) ICCF 2012 1-0 (34)}) 8. Nxe4 (8. Bd2 O-O 9. O-O Nc6 10. Rc1 Bf6 11. Bf4 d6 12. d5 Nxc3 13. Rxc3 Na5 14. Nd4 Bxd4 15. Qxd4 e5 16. Bxe5 dxe5 17. Qxe5 Ba6 18. d6 c6 19. c5 Nc4 {Petzold,G (1798)-Allerberger,P (2158) ICCF 2012 0-1 (45)}) (8. Qd3 Nxc3 9. Qxc3 Bf6 10. O-O O-O (10... c5 11. Qe3 Nc6 12. d5 Na5 13. Qd3 O-O 14. Nd2 exd5 15. Bxd5+ Bxd5 16. Qxd5+ Kh8 {Bobel,P (2277) -Girard,E (2277) ICCF 2009 0-1 (73)}) (10... d6 11. b4 O-O 12. Bb2 Qe7 13. Qb3 Nd7 14. Ne1 Bxg2 15. Nxg2 Qf7 16. Nf4 Bg5 17. Nh3 Bf6 18. Nf4 Bg5 19. Nh3 { 1/2-1/2 (19) Sokolik,B (2371)-Pietrzak,J (2307) ICCF 2011}) 11. Rd1 (11. Be3 d6 12. Qd2 a5 13. b4 Qe7 14. Rac1 axb4 15. axb4 Be4 16. d5 e5 17. c5 bxc5 18. bxc5 Na6 19. cxd6 cxd6 20. Rc6 Nb8 21. Rc4 Qe8 22. Ne1 Bxg2 {Bennborn,J (2227) -Gaujens,A (2207) ICCF 2014 1/2-1/2 (29)}) 11... d6 (11... Qe7 12. Qe3 a5 13. Bd2 d6 14. Bc3 Nd7 15. b4 Rfe8 16. bxa5 bxa5 17. Rab1 Nb6 18. Nd2 Bxg2 19. Kxg2 e5 20. dxe5 Bxe5 21. Bxe5 Qxe5 22. Qxe5 {Ilascu C.,I (1845)-Cornea,A (2071) ICCF 2019 1/2-1/2 (56)}) 12. h4 Qe7 13. b4 a5 14. Bb2 Nd7 15. Qd2 Rfe8 16. Rac1 axb4 17. axb4 b5 18. c5 Be4 19. Ra1 Red8 {Louro,E (1822)-Cuccumini,V (2058) ICCF 2020 1/2-1/2 (29)}) (8. O-O Nxc3 9. bxc3 O-O 10. Re1 (10. Ne5 Bxg2 11. Kxg2 Bf6 12. Nd3 Nc6 13. Nb4 {Elwood,D (1751)-Picken,R (1765) ICCF 2016 0-1 (31)}) 10... Be4 11. Ne5 Bd6 12. f3 Bb7 13. e4 Bxe5 14. dxe5 fxe4 15. f4 d6 16. exd6 Qxd6 17. Qxd6 cxd6 18. Bxe4 Bxe4 19. Rxe4 Re8 {Zhuravlev,K (2179)-Shubin, V (2087) ICCF 2015 1/2-1/2 (35)}) 8... Bxe4 9. O-O O-O 10. Ne5 (10. Nd2 Bxg2 11. Kxg2 d5 12. Qc2 Nc6 13. Nf3 Bf6 14. e3 Na5 15. c5 bxc5 16. Qxc5 Nb3 17. Qc4 dxc4 {0-1 (17) Maisonneuve,L (1642)-Teyssier,A (2235) ICCF 2015}) (10. Ne1 Bxg2 11. Nxg2 Bf6 12. Be3 c5 13. dxc5 Bxb2 14. cxb6 axb6 15. Ra2 Be5 16. Qb3 Na6 17. Bxb6 Rb8 18. Qb5 Qxb6 19. Qxe5 Rfc8 {Michael,D (2293)-Girard,E (2307) ICCF 2010 1/2-1/2 (49)}) 10... Bxg2 11. Kxg2 Bf6 12. Nf3 d6 13. Qd3 Nd7 14. e4 fxe4 15. Qxe4 Qe7 16. Be3 Rae8 17. Rac1 a5 {Morley,P (2368)-Gaujens,A (2264) ICCF 2017 1/2-1/2 (32)}) 6... Bd6 (6... Na6 7. b4 (7. Bf4 Bd6 8. Bxd6 cxd6 9. e3 O-O 10. Be2 Ne4 11. Nxe4 fxe4 12. Nd2 Qg5 13. O-O Qe5 14. dxe6 dxe6 15. b4 Nc7 16. Nb3 Rad8 17. a4 d5 18. c5 Qg5 {Dolezal,P (1806)-Gaujens,A (2222) ICCF 2011 1/ 2-1/2 (58)}) 7... Bd6 8. e3 c6 9. Ra2 Qe7 10. Rd2 Rd8 11. Qa4 Ne4 12. Nxe4 fxe4 13. Nd4 O-O 14. c5 bxc5 15. dxc6 cxd4 16. cxb7 dxe3 17. fxe3 Nc7 18. Bc4 { Aymard,M (2029)-Gaujens,A (2264) ICCF 2017 0-1 (57)}) 7. g3 Na6 8. Bg2 (8. b4 c5 9. dxc6 dxc6 10. Ra2 (10. Bg2 Qe7 (10... c5 11. Nb5 Be7 12. O-O O-O 13. Qb3 Ne4 14. Rd1 Qe8 15. Ne5 Rd8 16. Be3 Qh5 17. f3 Bf6 18. Nd7 Bxa1 19. Nxf8 Rxd1+ 20. Qxd1 Nc3 21. Qxa1 Nxe2+ 22. Kf1 {Overton,D (2462)-Buckley,G ICCF 2010 1-0 (33)}) 11. O-O O-O 12. Bg5 c5 13. b5 Nc7 14. Qc2 Nce8 15. Rae1 Qf7 16. Bxf6 gxf6 17. Rd1 Rd8 {Kratochvíl,J (2278)-Gaujens,A (2232) ICCF 2018 1/2-1/2 (33)}) 10... Qe7 11. Bg2 O-O 12. O-O c5 13. b5 Nc7 14. Rd2 Rad8 15. Bb2 Ba8 16. Qc2 g6 17. e4 fxe4 18. Ne1 Be5 19. Rxd8 Qxd8 {Johansson,C (2139)-Jefferson,N (2153) ICCF 2013 0-1 (44)}) 8... Nc5 9. O-O O-O 10. Nd4 (10. Nb5 Nce4 (10... exd5 11. cxd5 Qe7 12. Bg5 Nce4 13. Rc1 Nxg5 14. Nxg5 h6 15. Nf3 Bxd5 16. Nxc7 Bxc7 17. Rxc7 Rfc8 18. Qc2 Qe8 19. Rxc8 Rxc8 {Lanzani,P (1927)-Lagergren,H (2133) ICCF 2010 1/2-1/2 (56)}) 11. Nxd6 Nxd6 12. dxe6 dxe6 13. Qc2 Nf7 14. b3 Qe7 15. Bb2 Rad8 16. Rfd1 Be4 17. Qc3 c5 18. Ne5 Nxe5 19. Qxe5 Bc2 20. Rxd8 Rxd8 21. Qe3 Be4 {Jacobs Jr.,C (2177)-Bussom,A ICCF 2016 1-0 (61)}) 10... Qe7 (10... Be5 11. Rb1 exd5 12. cxd5 Qe8 13. f4 Bxd4+ 14. Qxd4 Nce4 15. Nxe4 fxe4 16. d6 c5 17. Qd1 Bd5 18. b4 {Kirienko,V (2156)-Kurdyukov,A (2229) ICCF 2009 1/2-1/2 (32)}) 11. b4 Nce4 12. Ncb5 c5 13. dxc6 dxc6 14. Nxd6 Qxd6 15. Bb2 c5 16. Nb3 Qe7 { Blumberg,D-Murray,B ICCF 2010 1-0 (35)}) 5... Bb7 6. d5 Bd6 (6... Na6 7. Bg2 ( 7. b4 Bd6 8. Bg2 Qe7 9. Nh3 (9. Nf3 O-O 10. O-O c6 11. Bg5 cxd5 12. Nb5 (12. cxd5 Nc7 13. dxe6 dxe6 14. Bxf6 Rxf6 15. Qb3 Nd5 16. Nb5 a5 17. Nxd6 Qxd6 18. Nd4 f4 19. Rac1 Qe5 20. Rfd1 axb4 21. axb4 fxg3 22. hxg3 Raf8 23. Bf3 Rg6 { Baranyuk,A-Egan,M (2243) ICCF 2009 1/2-1/2 (32)}) 12... Rac8 13. cxd5 Bxd5 14. Nxa7 Rce8 15. Nb5 Nc7 16. Nxd6 Qxd6 17. Rc1 Nb5 18. Bxf6 gxf6 19. a4 Nc7 20. b5 Rc8 {Gorin,A (2045)-Eremin,N (2062) ICCF 2012 1-0 (44)}) 9... O-O 10. O-O c5 11. Nb5 cxb4 12. Nxd6 Qxd6 13. axb4 Nxb4 14. Ba3 e5 15. Qb3 a5 16. Rab1 h6 17. Bxb4 axb4 18. Qxb4 Qxb4 {Harman,K (1554)-Trottier,L ICCF 2017 0-1 (42)}) 7... Nc5 8. Nh3 (8. Bf4 exd5 (8... Nce4 9. Nb5 Nd6 10. Bxd6 (10. Nxd6+ Bxd6 11. Bxd6 cxd6 12. Nf3 O-O 13. Nd4 g6 14. O-O exd5 15. cxd5 Qe7 16. Nb5 a6 17. Nc3 b5 18. Re1 Rac8 19. e4 fxe4 20. Nxe4 Nxe4 21. Rxe4 Qf6 {Lockett,J (1830)-Picken,R (1744) ICCF 2020 1-0 (41)}) 10... Bxd6 11. Nf3 Qe7 12. O-O a6 13. Nxd6+ Qxd6 14. dxe6 dxe6 15. Qa4+ Qc6 16. Qxc6+ Bxc6 17. Nd4 Bxg2 18. Kxg2 Kf7 19. Nc6 Rhe8 20. f4 {Raijmaekers,R (2420)-Gaujens,A (2393) ICCF 2007 1-0 (55)}) 9. cxd5 Nce4 10. Rc1 Bd6 11. e3 (11. Bxd6 Nxd6 12. Nf3 O-O 13. O-O Qe7 14. Qd4 Rae8 15. b4 a6 16. Nd2 Qf7 17. e3 h6 18. Nc4 Nxc4 19. Qxc4 Rc8 20. Qd3 Ng4 21. h3 Ne5 22. Qd4 Rfe8 {Höppenstein,M (2269)-Gaujens,A (2265) ICCF 2013 1-0 (82)}) 11... Bxf4 12. exf4 O-O 13. Nge2 c5 14. dxc6 dxc6 15. Qb3+ Kh8 16. Rd1 Qe7 17. Nxe4 fxe4 18. Nd4 Ba6 19. Nxc6 Qc5 {Eldridge,M (2371)-Gaujens,A (2272) ICCF 2014 1/ 2-1/2 (34)}) (8. Qc2 Bd6 9. Nf3 (9. Nb5 exd5 10. Nxd6+ cxd6 11. Qxf5 O-O 12. Bg5 dxc4 13. Bxb7 Nxb7 14. Bxf6 Qxf6 15. Qd5+ Kh8 16. Qxb7 Qxf2+ {0-1 (16) Pardoe,I (1484)-Forjan Jimenez,P ICCF 2018}) 9... O-O 10. dxe6 dxe6 11. O-O a5 12. Be3 Qe7 13. Nb5 Be4 14. Qc3 Na4 15. Qb3 Nc5 16. Qc3 a4 17. Rad1 e5 18. Bh3 g6 19. Bg2 Bc6 {Lloyd,G (2313)-Girard,E (2372) ICCF 2011 1/2-1/2}) 8... Be7 ( 8... Bd6 9. O-O (9. Nb5 Be5 10. O-O O-O 11. f4 Bd6 12. b4 Nce4 13. dxe6 (13. Ng5 exd5 14. cxd5 Ba6 15. Nd4 Qe8 16. Qa4 Bb7 17. Qc2 Bxd5 18. Nxf5 Nxg5 19. fxg5 Bxg2 20. Nxd6 cxd6 21. Kxg2 Qe4+ 22. Qxe4 Nxe4 23. Rxf8+ Kxf8 24. Be3 Ke7 {Beavan,R (1936)-Egan,M (2092) ICCF 2017 1/2-1/2 (32)}) 13... dxe6 14. Ng5 Qc8 15. Nxe4 Nxe4 16. Bb2 Be7 17. Be5 Rd8 18. Qc1 c5 19. Rd1 cxb4 20. axb4 Bxb4 { Houten,H (1939)-Bogun,O ICCF 2007 0-1}) 9... Be5 (9... O-O 10. Qc2 exd5 (10... Nfe4 11. Nxe4 fxe4 12. b4 Na6 13. dxe6 Be5 14. Bg5 Qe8 15. exd7 Qxd7 16. Rad1 Qf5 17. Be3 Rad8 18. Ng5 Bf6 19. Nxe4 Kh8 20. Qb1 Rxd1 21. Rxd1 Qh5 22. Nxf6 { Lethgo,C-Mur Saludas,M ICCF 2020 1-0}) (10... a5 11. Bf4 e5 12. Be3 Ne8 13. f3 a4 14. Rab1 Qf6 15. Nf2 f4 16. Bxc5 Bxc5 17. Nce4 Qg6 18. Qc1 Nd6 {0-1 (18) Oger,C (2335)-Brooks,M (2362) ICCF 2015}) 11. cxd5 Nce4 12. Bf4 (12. Nxe4 fxe4 13. Bxe4 Nxe4 14. Qxe4 Qe7 15. Qxe7 Bxe7 16. Rd1 Rae8 17. Bf4 Bd8 18. Rac1 Rxe2 19. Bxc7 Bf6 20. Bd6 Rc8 21. Rxc8+ Bxc8 22. b4 Ra2 23. b5 Rb2 {Stewart,K (2099) -Gray,G (2050) ICCF 2017 0-1 (36)}) 12... Qe7 13. Bxe4 Nxe4 14. Nxe4 Qxe4 15. Qxe4 fxe4 16. Rfd1 Rf5 17. Bxd6 cxd6 18. Rac1 Rxd5 19. Rxd5 Bxd5 20. Nf4 Bb3 21. Rc7 {Coyne,D (2346)-Visser,A (2226) ICCF 2015 1/2-1/2}) 10. Qc2 O-O (10... Bxc3 11. Qxc3 O-O 12. Nf4 Nce4 13. Qb3 Qe7 14. dxe6 dxe6 15. Qc2 e5 16. Nd3 Nc5 17. Bxb7 Nxb7 18. b4 c5 19. Rd1 Rac8 20. Bb2 Nd7 21. Qd2 Rfd8 22. Rac1 { Morley,P (2245)-Silin,V (2275) ICCF 2010 1-0 (84)}) 11. Be3 (11. Rd1 Qe7 (11... Qe8 12. Be3 Nce4 13. Nxe4 fxe4 14. Bg5 (14. dxe6 Qxe6 15. Ng5 Qf5 16. h3 Qg6 17. Rd2 Rae8 18. Rad1 c5 19. b4 Bc6 20. bxc5 bxc5 21. h4 h6 22. Nh3 Nh5 23. Bxc5 Nxg3 24. Bxf8 Nf5 25. Rd6 Qg4 {Borwell,A (2208)-Gaujens,A (2222) ICCF 2011 0-1 (34)}) 14... exd5 (14... Qh5 15. Bxf6 Rxf6 16. Qxe4 Re8 17. Qc2 Rh6 18. e3 exd5 19. cxd5 d6 20. f3 Bc8 21. g4 Bxg4 22. fxg4 Qxg4 23. Kh1 Rxh3 24. Bxh3 Qxh3 25. e4 Rf8 26. Qg2 {Wieringen,C (2317)-Gaujens,A (2232) ICCF 2015 1/ 2-1/2 (36)}) 15. cxd5 Nxd5 16. Qxe4 c6 17. Qc2 Nf6 18. a4 d5 19. a5 Rd8 20. Bf4 Qe7 21. Bxe5 Qxe5 22. Nf4 Rde8 23. axb6 {Manaenkov,V (2382)-Gaujens,A (2222) ICCF 2011 1-0 (47)}) 12. Be3 (12. Bd2 a5 13. Be3 Rab8 14. Bf4 Bxf4 15. Nxf4 e5 16. d6 cxd6 17. Bxb7 Rxb7 18. Nfd5 Nxd5 19. Rxd5 Rc7 20. Rad1 Rc6 21. Nb5 Rf6 22. Na7 {1/2-1/2 (22) Demir,S (1978)-Gaujens,A (2185) ICCF 2010}) (12. Bg5 h6 13. Be3 Nce4 14. Nxe4 fxe4 15. Nf4 Qf7 16. dxe6 dxe6 17. Rab1 g5 18. Nh3 Qh5 19. b4 Ng4 20. Rd7 Bc6 21. Rdd1 Rf7 22. Rf1 Raf8 23. Rbd1 Rf5 {Morley,P (2211) -Pietrzak,J (2285) ICCF 2009 0-1 (64)}) 12... c6 (12... Nce4 13. Nxe4 Nxe4 14. dxe6 (14. Nf4 c5 15. h4 (15. Rab1 g5 16. Nh3 exd5 17. cxd5 h6 18. Bxe4 fxe4 19. Qxe4 Rae8 20. b4 d6 21. bxc5 dxc5 22. Qg6+ Bg7 23. Bxg5 hxg5 24. Nxg5 Rf6 25. Qh7+ Kf8 26. Qd3 Qxe2 {Atakisi,F (2529)-Gaujens,A (2462) ICCF 2003 0-1 (39)}) 15... Bxf4 16. Bxf4 e5 17. d6 Qe6 18. Bg5 Kh8 19. Be7 Rfc8 20. g4 Rab8 21. gxf5 Qxf5 22. f3 Ng3 23. Qxf5 Nxf5 24. Bh3 g6 25. Kf2 h5 {Lanzani,P (1992)-Lugli,A ICCF 2011 1-0 (31)}) 14... dxe6 15. c5 Bd5 16. Rac1 Rad8 17. cxb6 cxb6 18. Nf4 Bxf4 19. Bxf4 e5 20. Be3 Qe6 21. Qd3 Nf6 22. Bh3 Ng4 23. Rc7 Rf7 24. Rxf7 { Stracey,N-Taylor,W (2024) ICCF 2015 1/2-1/2 (30)}) (12... Rab8 13. Rac1 Nce4 14. Nxe4 Nxe4 15. Nf4 c5 16. dxc6 Bxc6 17. Nd3 Bf6 18. c5 bxc5 19. f3 Bg5 20. Nf4 Nd6 21. Bxc5 Bxf4 22. gxf4 Bd5 23. e4 fxe4 24. fxe4 {Elisei,B (1891)-Di Pietro,R (1667) ICCF 2011 1-0 (34)}) 13. dxe6 (13. Nf4 cxd5 14. cxd5 Nce4 15. Nxe4 Nxe4 16. dxe6 dxe6 17. Qb3 Rae8 (17... Rfe8 18. Rac1 g5 19. Nd3 Bf6 20. Nb4 Rec8 21. Rxc8+ Rxc8 22. Qa4 a5 23. Nd3 Bc6 24. Qc2 Qe8 25. Rc1 Bb7 26. Qd1 Rc6 27. Rxc6 Qxc6 28. Qb3 b5 29. f3 {Schuster,J (2439)-Gaujens,A (2437) ICCF 2006 1/2-1/2 (36)}) 18. Qa4 Bxb2 19. Rd7 Nc3 20. Rxe7 Nxa4 21. Rxe8 Rxe8 22. Bxb7 Bxa1 23. Bc6 g5 24. Nd3 Kf7 {Brunsteins,D (2383)-Girard,E (2372) ICCF 2011 1/2-1/2 (38)}) 13... dxe6 (13... Nxe6 14. Rac1 Ng4 15. Bf4 Bxf4 16. gxf4 Qh4 17. Qd2 Rad8 18. e3 Ba6 19. Ne2 d5 20. cxd5 Nc5 21. Nd4 Ne4 22. Nf3 Qh5 23. Qe1 c5 24. b4 Rf6 25. bxc5 {Morley,P (2241)-Bristol,M (2136) ICCF 2008 1-0 (97) }) 14. Rac1 (14. Nf4 Ncd7 15. h3 Bxc3 16. Qxc3 e5 17. Nd3 e4 18. Ne1 Nh5 { 0-1 (18) Voigt,D-Girard,E ICCF 2007}) 14... Na6 (14... Ng4 15. Bxc5 bxc5 16. e3 Rad8 17. Qa4 a6 18. Qb3 Bd6 19. Rc2 e5 20. Rcd2 Ba8 21. Bf3 h5 22. Qa4 e4 23. Bxg4 hxg4 24. Nf4 Rf6 25. Qxa6 Rb8 26. Na4 {Ghiani,B-Girard,E ICCF 2008 1/2-1/ 2 (30)}) 15. b4 (15. Rd2 c5 16. Bxb7 Qxb7 17. Nb5 Ne4 18. Rd3 Nb8 19. f3 Nf6 20. Bf4 Nc6 21. Rcd1 Qe7 22. R3d2 Rfd8 23. Bxe5 Nxe5 24. Rxd8+ Rxd8 25. Nf4 Rxd1+ 26. Qxd1 Nxc4 {Demian,V (2424)-Gaujens,A (2393) ICCF 2007 1/2-1/2 (30)}) 15... c5 16. Bxb7 Qxb7 17. Qa4 Ng4 (17... Bxc3 18. Rxc3 Rac8 19. Ng5 {1-0 (19) Noriega de la Sierra,A (2077)-Roig García,J (1783) ICCF 2014}) 18. Bd2 Rad8 19. Nb5 Bb8 20. f3 Nf6 21. Nf4 Rde8 22. Bc3 e5 {Napalkov,V (2401)-Gaujens,A (2322) ICCF 2008 1-0 (39)}) (11. Nf4 Qe8 (11... a5 12. Be3 g5 13. Bxc5 bxc5 14. Nd3 Bd6 15. dxe6 Bxg2 16. Kxg2 dxe6 17. Rae1 e5 18. e4 f4 19. gxf4 gxf4 20. Rg1 Qd7 21. f3 Kh8 22. Kh1 Qf7 23. Na4 {Collobiano,A (2157)-Cornea,A ICCF 2014 1/2-1/2 (31)}) (11... Qe7 12. Bd2 (12. Be3 Nce4 13. Nxe4 Nxe4 14. Rad1 c5 15. Bc1 Rf7 16. b3 Re8 17. dxe6 dxe6 18. Rd3 Bd4 19. e3 Be5 20. Bb2 Bxb2 21. Qxb2 g5 22. Nh5 g4 23. Qe5 Ng5 {Pitkänen,J (1836)-Buhmann,T (2188) ICCF 2009 0-1 (25)}) 12... Qf7 13. Nd3 Nxd3 14. dxe6 dxe6 15. Bxb7 Rab8 16. Bc6 Nc5 17. Rad1 Rfd8 18. b4 Bxc3 19. Bxc3 Nce4 20. Bb2 h5 21. Rxd8+ Rxd8 22. f3 Nd6 23. c5 {Blondel, F (1804)-Vallette,P ICCF 2010 1-0 (30)}) (11... exd5 12. Ncxd5 Nxd5 13. Nxd5 c6 14. Nf4 g5 15. Nd3 Nxd3 16. Qxd3 f4 17. Rb1 Qf6 18. b4 Rf7 19. Bd2 d6 20. Rbc1 Re8 21. Bf3 Ree7 22. Bc3 Bxc3 23. Rxc3 {Pravec,L (2361)-Veselý,E (2325) ICCF 2014 1/2-1/2 (37)}) 12. Rb1 (12. Bd2 Nce4 13. Nxe4 Nxe4 14. Rad1 a5 {1/2-1/2 (14) Popelka,M (2127)-Marqués Taltavull,A ICCF 2005}) (12. dxe6 dxe6 13. Bxb7 Nxb7 14. Nd3 Bd6 15. b4 c6 (15... Qh5 16. f3 e5 17. Nb5 e4 18. Nf4 Qf7 19. Nxd6 Nxd6 20. Bb2 Qxc4 21. Rac1 Qxc2 22. Rxc2 Nfe8 23. Ne6 Rf7 24. a4 Re7 {1/2-1/2 (24) Lautenbach,W (2260)-Gaujens,A (2222) ICCF 2011}) 16. Qb3 Kh8 17. Rd1 e5 18. Rb1 f4 19. Kg2 Rd8 20. c5 Bc7 21. Rb2 Rd4 22. f3 fxg3 23. hxg3 bxc5 { Keber,E (1661)-Mastronardi,D ICCF 2011 1/2-1/2 (52)}) 12... Bxc3 13. Qxc3 e5 14. Nd3 Nxd3 15. Qxd3 (15. exd3 Qh5 16. f4 e4 17. b4 c6 18. d6 Rae8 19. Bb2 Rf7 20. Rfe1 Re6 21. Qd4 Rf8 22. dxe4 fxe4 23. c5 Ba6 24. Rxe4 Rxe4 25. Bxe4 Re8 26. Bg2 Re2 {Sánchez Ródenas,A (2338)-Gaujens,A (2222) ICCF 2011 1-0 (76)}) 15... Qh5 16. h3 d6 17. b3 Rae8 18. Rb2 Bc8 19. Qf3 Qf7 20. b4 Nh5 21. Qd3 f4 22. a4 g5 {Gibney,E (2438)-Gaujens,A (2437) ICCF 2006 1/2-1/2 (36)}) 11... Qe7 (11... Nce4 12. Nxe4 Nxe4 13. Rad1 Qf6 (13... Qe7 14. dxe6 (14. Bxe4 fxe4 15. Qxe4 Bxb2 16. Ng5 Rf5 17. d6 Bxe4 18. dxe7 Rxg5 19. Bxg5 d6 20. f3 Bg6 21. Bc1 Bf6 22. e4 Be8 23. Be3 Bxe7 24. h4 h6 25. Rd2 Bc6 {Díaz Rubí,F (2307)-Bragesjö, T (2179) ICCF 2020 1/2-1/2 (40)}) 14... dxe6 15. Ng5 Nxg5 16. Bxb7 Rab8 17. Bg2 f4 18. Bc1 a5 19. b4 axb4 20. axb4 c5 21. b5 Qf6 22. Rd3 Qh6 23. h4 Nf7 24. Rfd1 Rbe8 25. Rf3 {Coyne,D (2329)-Cook,D (2241) ICCF 2016 1/2-1/2 (82)}) (13... exd5 14. cxd5 Qf6 15. Qc4 Bxb2 16. d6+ Qe6 17. Qc2 Be5 18. Ng5 Qg6 19. dxc7 Bc6 20. Qc4+ Kh8 21. Rd5 Bxc7 22. Nxe4 b5 23. Qd3 Bxd5 24. Qxd5 fxe4 25. Bxe4 { Price,D (2073)-Gaujens,A (2247) ICCF 2013 1/2-1/2 (58)}) 14. dxe6 dxe6 15. b4 a5 (15... Rad8 16. f3 Rxd1 17. Rxd1 Nd6 18. c5 Nb5 19. f4 Bxg2 20. Kxg2 Bd4 21. Bxd4 Nxd4 22. Qc4 bxc5 23. Nf2 a6 24. Qxc5 Nxe2 25. Rd3 Rd8 26. Qxc7 Nd4 27. a4 {Bars,J (2325)-Gaujens,A (2223) ICCF 2012 1-0 (36)}) 16. Ng5 axb4 17. axb4 Ra3 18. Nxe4 fxe4 19. Bxe4 Bxe4 20. Qxe4 Qf5 21. Qc6 h5 22. c5 b5 23. Qxb5 { Koch,H (2365)-Gaujens,A (2222) ICCF 2011 1-0 (46)}) (11... Ng4 12. Bf4 (12. Bxc5 bxc5 13. e3 (13. dxe6 Bxg2 14. Kxg2 dxe6 15. Ng1 Qc8 16. h3 Qb7+ 17. Nf3 Bd4 18. Kg1 Ne5 19. Nxe5 Bxe5 20. Rab1 Rad8 21. Na4 Qc6 22. Rfd1 Bf6 23. Rxd8 Rxd8 24. Rd1 Rd6 {Vecek,M (2266)-Gaujens,A (2238) ICCF 2017 0-1 (63)}) 13... Qf6 14. Rfd1 g5 15. Rd3 Rab8 16. Rad1 Bd6 17. b3 a6 18. Rb1 Ba8 19. Qc1 Qh6 20. Rd1 Nf6 21. Qc2 Kh8 22. Ne2 Rbe8 23. b4 Qh5 {Guevara i Pijoan,J (2312)-Gaujens, A (2250) ICCF 2016 0-1 (48)}) (12. Bd2 exd5 13. Nxd5 Qe8 14. Rac1 Ne4 15. Bf4 c6 16. Nc7 Bxc7 17. Bxc7 h6 18. Rcd1 d5 19. Bf4 Qe7 20. Rfe1 Ne5 21. Bxe5 Qxe5 22. Nf4 Rf7 23. Nd3 Qd4 {Bendaña-Aragón,J (2309)-Gaujens,A (2225) ICCF 2015 1/ 2-1/2 (45)}) 12... Bxf4 13. Nxf4 e5 14. Nd3 e4 15. Nxc5 (15. Nf4 g5 16. Nh3 a5 17. b4 axb4 18. axb4 Rxa1 19. Rxa1 Na6 20. Qd2 h6 21. f4 Nxb4 22. fxg5 hxg5 23. Ra7 Bc8 24. Qxg5+ Qxg5 25. Nxg5 c6 26. dxc6 Nxc6 {Pavlícek,M (2316)-Gaujens,A (2207) ICCF 2014 0-1 (34)}) 15... bxc5 16. b4 Qe7 17. Rab1 Ba6 18. Nb5 Bxb5 19. cxb5 cxb4 20. Rxb4 Nf6 21. Rc1 Qd6 22. Qc5 Qxc5 23. Rxc5 {Mason,I (2236) -Gaujens,A (2232) ICCF 2015 1/2-1/2}) (11... exd5 12. Nxd5 Nxd5 13. cxd5 a5 14. Rad1 a4 15. Bxc5 bxc5 16. Qxc5 Qf6 17. Rd2 Bd6 18. Qc2 Rfb8 19. f4 Ba6 20. Nf2 g5 21. fxg5 Qxg5 22. Nh3 Qe3+ 23. Kh1 {Bars,J (2371)-Cornea,A (2098) ICCF 2016 1-0 (51)}) 12. Bxc5 Qxc5 13. Na4 Qa5 14. dxe6 Bxg2 15. Kxg2 dxe6 16. Ng5 Rfe8 17. Nf3 Bd6 18. Nc3 Qa6 (18... Qc5 19. e4 f4 20. Rfe1 fxg3 21. hxg3 Nd7 22. e5 Bxe5 23. Ne4 Qc6 24. Rad1 Bf6 25. Rh1 Rad8 26. Rxh7 Ne5 27. Nxe5 Bxe5 28. Rdh1 Rd4 29. R7h4 Kf8 30. b3 {Pravec,L (2348)-Gaujens,A (2118) ICCF 2010 1-0 (68)}) 19. e4 Ng4 20. exf5 Qxc4 21. fxe6 Rxe6 22. Rae1 Ree8 23. Nd2 Qc6+ 24. Nde4 Nf6 25. Qb3+ Kh8 26. f3 Re5 27. Rc1 Rf8 28. Nxf6 gxf6 29. Ne4 Qd7 30. Rf2 Rh5 31. Qd1 Re8 32. b4 Qh3+ 33. Kg1 Qe6 34. Rd2 a5 35. Nxd6 cxd6 36. Rc6 Re5 37. Kg2 Re1 38. Qc2 Qe3 39. Rf2 Qxa3 40. Rxd6 Qxb4 41. Rxf6 R1e7 42. Qc1 Re3 43. Rf7 Kg8 44. Rb7 R8e7 45. Rc2 Re2+ 46. Kh3 Rxb7 47. Qg5+ Rg7 48. Rc8+ Qf8 49. Rxf8+ Kxf8 50. Qd8+ Re8 51. Qxb6 Rg6 52. Qb2 Kg8 53. Qb5 Rf8 54. f4 Rgf6 55. Qxa5 Rf5 56. Qc7 R8f6 57. Kg4 h5+ 58. Kf3 Rf7 59. Qc8+ Kh7 60. Ke4 Ra5 61. Qe6 Rfa7 62. Kf3 R7a6 63. Qf7+ Kh6 64. Kg2 Ra7 65. Qf6+ Kh7 66. Kh3 R5a6 67. Qf8 Rh6 68. Kh4 Rb7 69. Qf5+ Kg7 70. Qe4 Rd7 71. Kg5 Rf7 72. f5 Rd7 73. Qe5+ Kh7 74. f6 Rg6+ 75. Kf5 Rg8 76. h3 Rgd8 77. Qe6 Rd5+ 78. Ke4 Rd4+ 79. Ke5 Kh8 80. f7 Kg7 81. Qe8 R4d5+ 82. Ke6 R5d6+ 83. Ke7 R8d7+ 84. Qxd7 Rxd7+ 85. Kxd7 Kxf7 86. Kd6 Kf6 87. h4 Kf5 88. Ke7 Ke5 89. Kf7 Kf5 90. Kg7 {1-0 (90) Bars,J (2334)-Cornea,A ICCF 2014 Unusual replies to-1 d4}) 9. O-O O-O 10. Bf4 d6 11. Be3 e5 12. b4 Nce4 13. Nxe4 Nxe4 14. Qd3 Qd7 15. g4 Nf6 16. gxf5 e4 17. Qd4 Qxf5 18. Nf4 { Ciesielski,S (2571)-Leupold,V (2007) ICCF 2006 0-1 (81)}) (6... b5 7. Bg2 bxc4 8. Nh3 Bd6 9. O-O Be5 10. dxe6 Bxg2 11. Kxg2 Bxc3 12. bxc3 dxe6 13. Qa4+ Qd7 14. Qxc4 Qc6+ 15. Qxc6+ Nxc6 16. Ng5 Ke7 17. a4 Nd7 18. Ba3+ {Masset,J (1898) -Desquiens,S (2108) ICCF 2012 0-1 (38)}) (6... Bc5 7. Bg2 O-O (7... a5 8. Nh3 O-O 9. Nf4 (9. O-O Na6 10. Rb1 Rb8 11. e4 fxe4 12. Nxe4 Nxe4 13. Bxe4 Qf6 14. Qc2 g6 15. Re1 Rfe8 16. Bg5 Qg7 17. Bd2 Bd4 18. b4 axb4 19. axb4 c5 20. dxc6 Bxc6 {Lundberg,C (2183)-Naeter,B (2196) ICCF 2016 1/2-1/2 (42)}) 9... Na6 10. O-O e5 11. Nd3 e4 12. Nxc5 Nxc5 13. Be3 d6 14. Qc2 Ba6 15. b3 Qe8 16. a4 Nfd7 17. Nb5 Bxb5 18. axb5 Qh5 19. Ra3 {Theveniaud,C (1953)-Becker,C (2152) ICCF 2013 0-1 (28)}) 8. b4 Bd6 9. Nf3 c6 10. dxe6 dxe6 11. O-O a5 12. Bf4 Bxf4 13. Qxd8 Rxd8 14. gxf4 axb4 15. axb4 c5 16. b5 Rxa1 17. Rxa1 Bxf3 18. Bxf3 { Farias,S (2174)-Leonard,A (2171) ICCF 2012 1/2-1/2 (38)}) (6... e5 7. Bg2 d6 8. Nf3 Nbd7 9. e4 fxe4 10. Ng5 Nc5 11. Ngxe4 Nfxe4 12. Nxe4 Nxe4 13. Bxe4 Qf6 14. Qf3 Qxf3 15. Bxf3 Be7 16. O-O O-O 17. Bg4 Bc8 18. Bxc8 {Regan,D-Catania,D (1594) ICCF 2020 1/2-1/2 (38)}) 7. Bg2 O-O (7... Be5 8. Bd2 O-O 9. Nh3 a5 10. O-O Na6 11. Qc2 Nc5 12. Rad1 exd5 (12... Qe8 13. Nf4 a4 14. Nd3 Bxc3 15. Bxc3 d6 16. Bxf6 Rxf6 17. f4 exd5 {Weimer,D-Knöppel,B (2047) ICCF 2020 0-1 (60)}) 13. cxd5 Qe8 14. Be3 Ng4 15. Bf4 a4 16. Bxe5 Qxe5 17. Rfe1 f4 18. Bf3 fxg3 19. hxg3 {Jacobs Jr.,C (2193)-Bussom,A ICCF 2017 1/2-1/2 (43)}) (7... Na6 8. Nh3 O-O 9. Nb5 Ne4 (9... Be5 10. f4 Bd6 11. b4 Be7 12. O-O Ne4 13. Be3 exd5 14. cxd5 c6 15. dxc6 dxc6 16. Qb3+ Kh8 17. Rfd1 Qc8 18. Rac1 c5 19. Bxe4 {Boada Martí,M-Recasens Sánchez,J ICCF 2006 1-0 (36)}) 10. f3 Nf6 11. dxe6 dxe6 12. O-O Qe7 13. b4 Be5 14. Ra2 c6 15. f4 cxb5 16. Bxb7 Rad8 17. Qb3 Bd4+ 18. e3 Qxb7 19. cxb5 {Gus'kov,V (2359)-Sheppard,B (2343) ICCF 2009 1/2-1/2}) 8. Nf3 Na6 (8... a5 9. O-O Na6 10. Nb5 Nc5 11. Nfd4 Be5 12. Nf3 d6 13. Ng5 Nfe4 14. Nxe4 fxe4 15. dxe6 Re8 16. Be3 Bxb2 17. Rb1 Be5 18. f4 exf3 19. exf3 Nxe6 20. f4 {Chomicki,H (2229)-Pietrzak,J (2307) ICCF 2011 1/2-1/2 (32)}) 9. b4 c5 10. dxe6 dxe6 11. b5 Nb8 12. O-O Qe7 13. Qc2 Nbd7 14. a4 Ne5 {Ingersol,H (2411) -Bussom,A ICCF 2016 1/2-1/2 (38)}) (3. Nf3 Bb7 (3... d5 4. cxd5 exd5 5. e3 Nf6 6. Bd3 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 O-O 9. O-O c5 10. dxc5 bxc5 11. Re1 Bg4 12. h3 Bh5 13. Qa4 Nbd7 14. b3 Bxf3 15. Nxf3 {Guy,D (1691)-Parente,M (1657) ICCF 2015 1-0 (42)}) (3... f5 4. g3 Bb4+ 5. Bd2 Qe7 6. Bg2 Bb7 7. O-O Nf6 8. Bg5 h6 9. Bf4 Nc6 10. Ne5 Rg8 11. Nd3 Bd6 12. Bxd6 cxd6 13. d5 exd5 14. cxd5 Ne5 15. Na3 {Savegren,K (2427)-Deneuville,C (2304) ICCF 2009 1-0 (44)}) 4. g3 (4. e3 f5 (4... Bb4+ 5. Bd2 Qe7 6. Nc3 f5 7. Be2 Nf6 8. O-O O-O {0-1 (8) Paan,K (2027) -Cornea,A ICCF 2014}) 5. Be2 (5. a3 Nf6 6. b4 (6. Bd3 Be7 7. b4 c5 8. dxc5 bxc5 9. bxc5 Na6 10. O-O Nxc5 11. Bb2 Qb8 12. Nc3 Bxf3 13. Qxf3 Ng4 14. h3 Qh2# { 0-1 (14) Secrieru,I (1667)-Cornea,A (2083) ICCF 2015}) 6... Be7 7. Be2 c5 8. bxc5 bxc5 9. O-O O-O 10. Nc3 Ne4 11. Bb2 cxd4 12. exd4 Bf6 13. Nd2 Nxf2 14. Rxf2 Bxd4 15. Qf1 Qf6 16. Rc1 Nc6 {Tieken,F (2204)-Kappelhof,W (2179) ICCF 2015 1-0 (42)}) (5. Nbd2 Nf6 6. Be2 Be7 7. O-O O-O 8. b3 Qe8 9. Ne1 Qg6 10. Bf3 Ne4 11. g3 c5 12. Bxe4 fxe4 13. Bb2 Nc6 14. dxc5 bxc5 15. a3 d5 16. Qc2 Rad8 { Bubb,D (1878)-Davidson,J (2104) ICCF 2020 0-1 (25)}) (5. Bd3 Nf6 6. O-O Bd6 7. Nbd2 O-O 8. b3 Qe8 9. h3 Nc6 10. a3 h6 11. Bb2 Qh5 12. Ne5 Qe8 13. Ndf3 Be7 14. Bc2 d6 15. Nd3 Ne4 16. Nf4 Nd8 {Capuzzi,G (1820)-Catania,D (1720) ICCF 2013 1/ 2-1/2 (68)}) 5... Nf6 (5... Bb4+ 6. Bd2 a5 7. O-O Nf6 8. Qb3 Qe7 9. Nc3 O-O 10. a3 Bxc3 11. Bxc3 Ne4 12. Ne5 d6 13. Nd3 Nd7 14. Be1 a4 15. Qc2 Qg5 16. Nf4 Nef6 17. d5 {Gerbaudo,P-Girard,E ICCF 2007 1/2-1/2 (32)}) 6. O-O (6. a3 Be7 7. Nc3 O-O 8. b4 (8. O-O c5 9. Qc2 Ne4 10. d5 (10. b3 d6 11. Bb2 Bf6 12. Rad1 Nd7 13. Nxe4 fxe4 14. Nd2 d5 15. dxc5 Bxb2 16. c6 Bxc6 17. cxd5 Bxd5 18. Qxb2 Qg5 19. Qd4 Nf6 20. Rc1 Rfd8 21. Qa4 {Egan,M (2019)-Lagergren,H (1949) ICCF 2007 1-0 (62)}) 10... Nxc3 11. bxc3 exd5 12. Rd1 dxc4 13. Bxc4+ Kh8 14. Ne5 d5 15. Qd2 Nd7 16. Nxd7 Qxd7 17. Bxd5 Qxd5 18. Qxd5 Bxd5 19. Rxd5 Rad8 {Tudor,V (1436) -Chiricuta,M (2202) ICCF 2009 0-1}) 8... Ne4 9. Bb2 c5 10. Qb3 Nc6 11. d5 cxb4 12. Nxe4 Na5 13. Qd3 fxe4 14. Qxe4 Bf6 15. Be5 Nb3 16. O-O Nxa1 17. Rxa1 exd5 { Dam,J (1760)-Arufe Vázquez,J ICCF 2016 0-1 (32)}) 6... Be7 (6... Bd6 7. a3 a5 8. b3 O-O 9. Bb2 Ne4 10. Nfd2 Na6 11. f4 Nf6 12. Nc3 Qe8 13. Qc2 Qg6 14. Nf3 Be7 15. Rae1 Ne4 16. Ne5 Qe8 17. Bf3 d6 18. Ng4 {Kayser,P (2296)-Henderson,G (2265) ICCF 2016 0-1 (42)}) 7. Nc3 O-O (7... Ne4 8. Qc2 O-O 9. Rd1 d6 10. d5 Nxc3 11. Qxc3 Bf6 12. Qc2 Nd7 13. dxe6 Nc5 14. Bd2 Nxe6 15. Bc3 Bxc3 {1/2-1/2 (15) Tibbert,P (1763)-Picken,R (1825) ICCF 2015}) 8. b3 (8. Re1 a5 9. Bd3 Ne4 { 0-1 (9) Gezgin,B (1666)-Romm,M (2502) ICCF 2011}) 8... Qe8 9. Bb2 Qg6 10. h3 d6 11. d5 e5 12. e4 Nxe4 13. Nh4 Bxh4 14. Bh5 Qf6 15. Nxe4 fxe4 {Smith,D-Catania, D (1720) ICCF 2015 0-1}) (4. a3 Nc6 (4... f5 5. d5 Nf6 6. g3 exd5 7. cxd5 Nxd5 8. Bg2 Nf6 9. Nc3 d5 10. Bg5 Be7 11. O-O c6 12. Nd4 Qd7 13. Qc2 g6 14. b4 O-O 15. Rad1 Ne4 16. Nxe4 {Bennborn,J (2236)-Gaujens,A (2237) ICCF 2017 1/2-1/2 (40)}) (4... g6 5. e3 Bg7 6. Nc3 Nf6 7. Bd3 O-O 8. e4 d6 9. O-O Nbd7 10. d5 Nc5 11. Bc2 Ba6 12. b3 Nfxe4 13. Nxe4 Nxe4 14. Bxe4 Bxa1 15. dxe6 Bf6 16. Bxa8 { Silverman,R-Catania,D (1720) ICCF 2013 1/2-1/2 (45)}) 5. Nc3 d6 6. Qa4 Qd7 7. d5 exd5 8. cxd5 Nb8 9. Qxd7+ Nxd7 10. e4 Ngf6 11. Bb5 Bc8 12. Bc6 Rb8 13. O-O Be7 14. Nb5 a6 15. Nc3 O-O {Reyes Cortés,R (1681)-Cerdan,C ICCF 2017 1-0 (38)}) 4... Bb4+ (4... f5 5. Bg2 Be7 6. d5 Bf6 7. O-O Na6 8. dxe6 dxe6 9. Qa4+ c6 10. Nc3 Bxc3 11. Rd1 Qe7 12. bxc3 Nc5 13. Qb4 e5 14. Nh4 g6 15. a4 Nf6 16. a5 { Bucsa,I (2270)-Taras,I (1945) ICCF 2009 1-0}) (4... Bxf3 5. exf3 d5 6. Nc3 dxc4 7. Bxc4 c6 8. O-O Nf6 9. Re1 Be7 10. a3 O-O 11. Bf4 Nd5 12. Nxd5 cxd5 13. Bb3 Bd6 14. Qd2 Nc6 15. Rac1 Ne7 16. Rc3 {Lysovsky,V (1944)-Beday,A (2029) ICCF 2020 1-0 (46)}) 5. Bd2 Bxf3 (5... Bxd2+ 6. Qxd2 f5 7. Bg2 Nf6 8. Nc3 (8. O-O O-O 9. Rd1 Ne4 10. Qe3 Qf6 11. Nbd2 Nxd2 12. Rxd2 d6 13. c5 dxc5 14. dxc5 Na6 15. cxb6 axb6 16. a3 Nc5 17. Ne5 Bxg2 18. Kxg2 g5 19. Nd7 Nxd7 {Florea,M (2431) -Heidtmann,D (2121) ICCF 2020 1/2-1/2 (58)}) 8... O-O 9. O-O Qe7 (9... Ne4 10. Nxe4 Bxe4 11. Rfd1 Qe8 12. Rac1 a5 13. Ne1 Bxg2 14. Kxg2 h6 15. Nd3 Nc6 16. c5 Ne7 17. cxb6 cxb6 18. Qf4 Nd5 19. Qd6 a4 20. Nf4 Nxf4+ 21. Qxf4 {Procopi,J (2306)-Bernal Varela,N (2384) ICCF 2018 1/2-1/2 (27)}) 10. a3 Ne4 11. Nxe4 Bxe4 12. Ne5 Bxg2 13. Kxg2 d6 14. Nd3 Nd7 15. b4 e5 16. dxe5 Nxe5 17. Nxe5 { Fernández,G (2004)-Taras,I (2076) ICCF 2008 1/2-1/2}) 6. exf3 Bxd2+ 7. Qxd2 (7. Nxd2 Ne7 8. f4 Nbc6 9. Bg2 d5 10. cxd5 Nxd5 11. O-O Qd7 12. Nf3 O-O-O 13. Rc1 f6 14. Re1 Rde8 15. Qa4 Na5 16. Qxd7+ Kxd7 17. a3 c6 18. Rc2 Nb7 {Dunn,P (2090) -Jaksa,C (2003) ICCF 2014 1/2-1/2 (43)}) 7... d5 (7... Nf6 8. Bg2 d5 9. O-O O-O 10. cxd5 (10. Rc1 c6 11. f4 Qd6 12. Qc3 Nbd7 13. cxd5 cxd5 14. Nd2 g6 15. Nf3 Kg7 16. Bf1 Ne4 17. Qe1 a5 18. Bd3 Nef6 19. Ne5 Rfc8 20. Bb5 h5 21. a4 Rc7 { Fels,B (2185)-Gaujens,A (2265) ICCF 2019 1/2-1/2 (33)}) 10... exd5 11. Na3 Re8 12. Rac1 Qd7 13. f4 Na6 14. Nc2 Rac8 15. Qd3 Qa4 16. Ne3 c6 17. a3 Nc7 18. Rfd1 Nb5 19. Nc2 {Polezhaev,A-Shorokhov,S (2300) ICCF 2008 1-0}) 8. Nc3 (8. cxd5 exd5 (8... Qxd5 9. Nc3 Qxf3 10. Rg1 c6 11. d5 Ne7 12. Be2 Qf5 13. dxe6 fxe6 14. O-O-O Nd5 15. h3 Qf6 16. Rge1 O-O 17. Bg4 Nxc3 18. Bxe6+ Kh8 19. Qxc3 Qxc3+ 20. bxc3 {Hamilton,D (2006)-Jaksa,C (2026) ICCF 2011 1/2-1/2 (31)}) 9. Nc3 Ne7 10. Bh3 O-O 11. O-O Re8 (11... Nbc6 12. Rac1 a6 13. f4 Na7 14. Qd3 c6 15. Rfe1 Nb5 16. Nb1 Re8 17. Nd2 Nd6 18. Nf3 f6 19. Re6 Nb5 20. Qc2 Nd6 21. Rce1 {1/2-1/2 (21) Almarza Mato,C (2098)-Jean,L (1881) ICCF 2017}) 12. Rfe1 c6 13. Kg2 Na6 14. Qc2 Qd6 15. Rac1 Nc7 16. Ne2 a5 17. f4 Na6 18. Nc3 Nc7 19. Bg4 Red8 { Kermer,W (2306)-Gunkel,W (2314) ICCF 2012 1/2-1/2 (71)}) (8. Bg2 Ne7 9. f4 c6 10. O-O O-O 11. Rd1 Nd7 12. Qd3 b5 13. cxb5 cxb5 14. Qxb5 Rb8 15. Qe2 Rb4 16. a3 Rb3 17. Rd3 Qb6 18. Rxb3 Qxb3 19. Nc3 Rb8 {Simeonov,L (2187)-Bristol,M (2138) ICCF 2012 1/2-1/2 (33)}) 8... Ne7 9. cxd5 (9. O-O-O O-O (9... c6 10. f4 Nd7 11. cxd5 cxd5 12. Ba6 O-O 13. Kb1 Nf6 14. Rc1 Nf5 15. Rhd1 Nd6 16. Qe2 Re8 17. f3 Re7 18. h4 Rb8 19. Nb5 Nxb5 20. Bxb5 Rc7 21. Rxc7 {Havumäki, A-Langenegger,T ICCF 2013 1-0 (60)}) 10. h4 Nbc6 11. Kb1 Qd7 12. cxd5 Nxd5 13. Bc4 Nce7 14. Nxd5 Nxd5 15. h5 {1/2-1/2 (15) Sladek,V (2163)-Bristol,M (2136) ICCF 2008}) 9... Nxd5 10. Bd3 (10. Bg2 Nc6 11. f4 Nce7 12. Nxd5 Nxd5 13. O-O ( 13. f5 Qf6 14. Qc2 O-O 15. O-O Rad8 16. fxe6 Qxe6 17. Rfe1 Qd6 18. Rad1 c6 19. Qa4 a5 20. Re5 Rc8 21. Qb3 Rfd8 22. Rde1 h6 23. Bxd5 cxd5 24. h4 Rc4 { Glukhovtsev,S (2341)-Girard,E (2372) ICCF 2011 1/2-1/2 (29)}) 13... O-O 14. Rac1 Rc8 15. Rc4 Qd7 16. Rfc1 c6 17. Bxd5 Qxd5 18. b4 h5 19. h4 g6 20. Qc3 Rfd8 21. a4 Ra8 {Biedermann,K (1981)-Jaksa,C (2026) ICCF 2011 1/2-1/2 (26)}) 10... c6 11. O-O O-O 12. Rac1 Nf6 13. Rfd1 Nbd7 14. Ba6 c5 {Pheby,I (2169)-Gaujens,A (2226) ICCF 2009 1/2-1/2 (67)}) (3. Nc3 Bb4 4. Qc2 (4. e3 Bb7 5. Nge2 f5 6. a3 Bxc3+ (6... Bd6 7. d5 Nf6 8. g3 Na6 (8... a5 9. Bg2 Na6 10. O-O O-O 11. Nd4 Nc5 12. Ncb5 Be7 13. dxe6 Bxg2 14. Kxg2 dxe6 15. Nc6 Qe8 16. Nxe7+ Qxe7 17. Nd4 e5 18. Nxf5 Qe6 19. Qc2 Nfe4 20. Nh4 {Räisänen,T (1353)-Laine,J (2311) ICCF 2018 0-1 (29)}) 9. Bg2 Nc5 10. O-O O-O 11. b4 Nce4 12. Bb2 Qe7 13. Qc2 a5 14. Nxe4 Nxe4 15. Nc3 exd5 16. cxd5 Rae8 17. Rfd1 Ba6 18. Re1 {Webster,R (2316) -Brotherton,T (2219) ICCF 2019 1/2-1/2 (44)}) 7. Nxc3 Nf6 8. f3 O-O 9. Qc2 Qe8 10. Be2 Qg6 11. O-O a6 12. Rd1 d6 13. b4 Nbd7 14. Bb2 Rae8 15. Na4 e5 {Ruiz,G (1751)-Catania,D (1593) ICCF 2019 1-0 (55)}) (4. a3 Bxc3+ 5. bxc3 Bb7 6. f3 f5 7. Bf4 Nf6 8. e3 d6 9. Bd3 Nbd7 10. Ne2 e5 11. Bg5 h6 12. Bh4 g5 13. Bf2 e4 14. fxe4 Nxe4 15. Bxe4 Bxe4 {Capuzzi,G (1816)-Chiesa,R ICCF 2012 0-1 (28)}) (4. Qb3 Nc6 5. Nf3 a5 6. e4 d6 7. a3 a4 8. Qc2 Bxc3+ 9. bxc3 Nf6 10. e5 dxe5 11. dxe5 Nd7 12. Bg5 Ne7 13. Qe4 Ra7 14. Nd4 Bb7 15. Qh4 Nxe5 {Roig García,J-Schulz,B (1756) ICCF 2013 0-1 (36)}) (4. Nf3 Bxc3+ (4... f5 5. Qb3 Bxc3+ 6. Qxc3 d6 7. g3 h6 8. Bg2 Bb7 9. O-O Nf6 10. d5 e5 11. Nxe5 O-O 12. Nf3 c5 13. Nh4 {1/2-1/2 (13) Tombs,S (1774)-Rheindt,S ICCF 2016}) 5. bxc3 d5 6. cxd5 Qxd5 7. e3 Nf6 8. Bd3 O-O 9. c4 Qa5+ 10. Bd2 Qa3 11. Qc2 Nc6 12. O-O a5 13. e4 h6 14. e5 Nd7 15. Be4 Bb7 {Mercandelli,C (1754)-Klein,J ICCF 2008 1-0 (29)}) 4... Bb7 5. e4 (5. a3 Bxc3+ 6. Qxc3 f5 (6... Ne7 7. Nf3 O-O 8. b3 d6 9. g3 Nd7 10. Bg2 Nf6 11. O-O a5 12. Rd1 Qe8 13. h3 Ne4 14. Qd3 f5 15. Bb2 Rb8 16. Rac1 Qg6 17. Qc2 Qh6 18. e3 {Romitsyn,N (2374)-Fonseca,I (2104) ICCF 2006 1-0 (59)}) 7. f3 Nf6 8. Nh3 Nc6 9. Bg5 h6 10. Bd2 O-O 11. e3 Nh5 12. Bd3 Qh4+ 13. g3 Qf6 14. Rg1 Ne7 15. O-O-O d5 16. g4 fxg4 {Hryniw,M (2254)-Bristol,M (2230) ICCF 2005 1-0 (54)}) 5... Qh4 (5... Bxc3+ 6. bxc3 Ne7 7. Nf3 d6 8. Bd3 Nd7 9. O-O Ng6 10. Bg5 f6 11. Be3 Qe7 12. h4 e5 13. g3 Qe6 14. c5 dxc5 15. d5 Qf7 16. a4 a5 17. Be2 { Lagergren,H (1521)-Beurden,M ICCF 2013 1/2-1/2 (29)}) 6. Bd3 (6. d5 f5 (6... Bxc3+ 7. bxc3 f5 8. exf5 exd5 9. Nh3 Qe4+ 10. Qxe4+ dxe4 11. Be2 Nf6 12. O-O Nc6 13. Nf4 Ne7 14. g4 O-O-O 15. Rb1 h5 16. gxh5 Nxf5 17. Ng6 Rh7 18. Bg5 { Elwood,D (1706)-Schulz,B (1784) ICCF 2018 0-1 (37)}) 7. exf5 exd5 8. Nf3 (8. cxd5 Bxd5 9. Bd2 Bb7 10. O-O-O Ne7 11. Nh3 Nbc6 12. Bg5 Qg4 13. f6 gxf6 14. Ne4 O-O-O 15. Nxf6 Qe6 16. a3 h6 17. Bc4 Qf5 18. Qxf5 Nxf5 19. axb4 hxg5 {Arsene, M-Cornea,A ICCF 2014 1-0 (65)}) 8... Qe4+ 9. Kd1 Qxc2+ 10. Kxc2 Nf6 11. Nb5 Na6 12. a3 Be7 (12... Bc5 13. cxd5 Nxd5 14. Bc4 O-O-O 15. Rf1 Rhf8 16. Bg5 Rde8 17. Rae1 Rxe1 18. Rxe1 h6 19. Bd2 Bxf2 20. Re5 Nf6 21. Nxa7+ Kb8 22. Nb5 Bxf3 23. gxf3 c6 24. Bf4 {Leupold,V (2567)-Girard,E ICCF 2009 0-1 (68)}) 13. cxd5 Bxd5 14. Nc3 Bb7 15. Bxa6 Bxa6 16. Re1 Bb7 17. Bg5 Bxf3 {Millette,F (1826)-Legemaat, G (2357) ICCF 2016 0-1 (41)}) 6... f5 (6... Bxc3+ 7. bxc3 f5 8. g3 Qh5 9. f3 fxe4 (9... Nc6 10. exf5 exf5 11. Ne2 Qxf3 12. Rf1 Qh5 13. Rxf5 Qxh2 14. d5 Nce7 15. Rf2 Qh1+ 16. Rf1 Qh5 (16... Qh2 17. Bf4 O-O-O 18. O-O-O Nf6 19. Rd2 Qh5 20. Nd4 Nfxd5 21. cxd5 Nxd5 22. Rh2 Qe8 23. Re2 Qf8 24. Kb2 g6 25. Re5 Nxf4 26. Rxf4 Qh6 27. Qe2 Qh1 28. Re7 {Spasov,S (2269)-Dreisch,J (1996) ICCF 2017 1-0 (40)}) 17. Bf4 O-O-O 18. O-O-O {Ilyin,I-Grigoriev,A ICCF 2011 1-0 (49)}) 10. fxe4 Nf6 (10... d6 11. Ne2 e5 12. O-O Nd7 13. c5 dxc5 14. Rf5 Qg4 15. dxe5 g6 16. Rf4 Qe6 17. Nd4 Qxe5 18. Nf3 Qe7 19. e5 O-O-O 20. Qe2 Kb8 21. e6 {Lund,S (2006)-Kaczmarek,R (2103) ICCF 2019 1-0 (57)}) 11. Ne2 e5 12. O-O Ng4 13. h4 Rf8 14. Rxf8+ Kxf8 15. Ba3+ Kg8 16. Rf1 c5 17. Rf5 Qe8 18. Qb1 {Kolanek,R (2216)-Baranyuk,A (2226) ICCF 2010 1/2-1/2 (44)}) 7. Nf3 (7. g3 Qh5 8. f3 (8. Bd2 Nf6 9. h3 fxe4 10. Be2 Qa5 11. Rh2 Nc6 12. a3 Nxd4 13. Qc1 e3 14. fxe3 Nb3 15. Qb1 Bxc3 16. Bxc3 Qg5 17. Bxf6 Qxg3+ 18. Rf2 O-O {Bishop,E-Bruce,R (1912) ICCF 2018 0-1}) 8... Nc6 (8... fxe4 9. fxe4 Nf6 10. Bf4 Nc6 11. d5 Nd4 12. Qg2 exd5 13. exd5 O-O 14. h3 Nxd5 15. cxd5 Bxd5 16. Qh2 Bxh1 17. Qxh1 Qa5 18. Bc4+ Kh8 19. Kd2 b5 {Groenhout,R (1853)-Hornung,M ICCF 2016 0-1 (29)}) 9. d5 Nd4 10. Qf2 fxe4 11. Qxd4 exd3 12. Qxg7 O-O-O 13. Qxh8 exd5 14. Qd4 dxc4 15. g4 Qf7 16. Qf4 Qe6+ 17. Qe3 Qc6 18. a3 d5 {Sapundjiev,G (2430)-Kögler,K (2514) ICCF 2007 0-1 (31)}) 7... Bxc3+ (7... Qg4 8. O-O Bxc3 9. h3 Qh5 10. bxc3 Nf6 11. exf5 Bxf3 12. gxf3 Qxh3 13. fxe6 dxe6 14. Bf4 O-O 15. Bxc7 Qxf3 16. Rfe1 Nbd7 17. Re3 Qh5 18. f4 Rac8 19. Bd6 {Lehr,M-Catania,D (1747) ICCF 2011 1-0 (29)}) 8. Kf1 (8. Qxc3 Qg4 9. O-O (9. Bf1 fxe4 10. Ne5 Qh4 11. Be2 Ne7 12. O-O d6 13. Ng4 Nf5 14. d5 c5 15. g3 Qe7 16. h4 O-O 17. Bg5 Qe8 18. Rac1 exd5 {0-1 (18) Secrieru,I (1857)-Gaujens,A (2229) ICCF 2012}) (9. h3 Qxg2 {0-1 (9) Grodzensky, Y (2147)-Egan,M (2243) ICCF 2009}) 9... fxe4 10. Ne5 Qh4 (10... Qf5 11. Bc2 d6 12. Qg3 dxe5 13. Qxg7 Nd7 14. Qxh8 Qg6 15. Bh6 exd4 16. Bf4 Ndf6 17. Bxc7 d3 18. Ba4+ Kf7 19. Be5 e3 20. f3 Qg5 21. Bc3 e2 22. Rf2 {Andreoli,A-Dorn,M ICCF 2013 0-1}) 11. Be2 d6 12. Ng4 Nf6 13. g3 (13. Nxf6+ Qxf6 14. Bh5+ g6 15. Bg4 h5 16. Bd1 Nc6 17. Be3 O-O-O 18. b4 e5 19. d5 Nd4 20. b5 g5 21. a4 g4 22. a5 Kd7 23. Qe1 Rde8 24. Qd2 Rhg8 {MacGregor,C (1902)-Jamieson,I (1987) ICCF 2011 0-1 (27)}) 13... Qh3 14. Nxf6+ gxf6 15. g4 (15. d5 Nd7 16. f3 exf3 17. Bxf3 e5 18. Be4 Rg8 19. Qc2 Rg7 20. Qe2 Qg4 21. Bf3 Qh3 22. Be4 Qg4 23. Bf3 Qh3 {1/2-1/2 (23) Cornacchini,G (1772)-Laine,J (1873) ICCF 2007}) 15... Qxc3 16. bxc3 Nd7 { Lindberg,W (1667)-Cottle,N (1873) ICCF 2014 1/2-1/2 (38)}) (8. bxc3 Qg4 9. Qe2 fxe4 10. Ng5 Qxg2 11. Bxe4 Bxe4 12. Qxe4 Qxe4+ 13. Nxe4 Ne7 14. Rg1 O-O 15. Rb1 Nbc6 16. Ke2 d5 17. cxd5 exd5 18. Ng5 Rae8 19. Rb2 Nf5+ {MacGregor,C (1945) -Ray,D ICCF 2010 0-1 (30)}) 8... Qe7 (8... Qh5 9. bxc3 Nf6 (9... Ne7 10. Qe2 O-O 11. Nd2 Qf7 12. e5 c5 13. f4 cxd4 14. cxd4 Nbc6 15. Nf3 Nb4 16. Ba3 a5 17. Kf2 Qh5 18. d5 exd5 19. Qd2 Rfc8 {Swahnberg,L (2192)-Egan,M (2243) ICCF 2009 0-1 (60)}) 10. exf5 O-O (10... Bxf3 11. gxf3 O-O (11... Qxf3 12. Rg1 Qh3+ 13. Rg2 O-O 14. Bg5 Ng4 15. Kg1 exf5 16. Bxf5 Ne3 17. Bxh3 Nxc2 18. Rf1 Rf3 19. Rg3 Rxg3+ 20. fxg3 h6 21. Bc1 {Renard,S (1978)-Schulz,B (1778) ICCF 2016 1-0}) 12. fxe6 Qxf3 13. Rg1 dxe6 14. Rg2 Nbd7 15. Bg5 Rae8 16. Re1 Kh8 17. Re3 Qh5 18. Be2 Qf7 19. f4 c5 20. Rh3 Rc8 21. Bd3 Qg8 22. d5 {Philippart,C-Laine,J (1873) ICCF 2007 1-0 (38)}) 11. fxe6 dxe6 12. Ng5 Nbd7 13. h4 e5 14. Bf5 Kh8 15. Rh3 c5 16. Be3 Ba6 17. Be6 Rad8 18. Re1 Bc8 19. Bc1 Nb8 20. Bxc8 {Clowes,M (2363) -Gaujens,A (2377) ICCF 2008 1-0 (29)}) 9. bxc3 fxe4 10. Bxe4 Bxe4 11. Qxe4 Nc6 12. Bg5 Nf6 13. Bxf6 gxf6 14. g3 h5 {Olsen,S (2457)-Wilhelmi,D (2472) ICCF 2008 1/2-1/2 (45)} (14... f5 15. Qd3 O-O 16. Kg2 d6 17. Rhe1 Qf6 18. c5 bxc5 19. dxc5 Ne5 20. Qe2 Nxf3 21. Qxf3 e5 22. Rad1 Kh8 23. Rd5 f4 24. cxd6 cxd6 25. Red1 Rad8 26. c4 {Saidashev,A (2324)-Engelhardt,E (2126) ICCF 2007 1-0 (36)})) (3. d5 Bb4+ (3... Nf6 4. g3 (4. a3 Ba6 5. dxe6 fxe6 6. e3 Bb7 7. Nf3 a5 8. Bd3 Na6 9. O-O Nc5 10. Bc2 g6 11. e4 Nfxe4 12. Nc3 Nxc3 13. bxc3 Bg7 14. Bd2 O-O 15. Nd4 Ba6 {Dávila,O (2033)-Davidson,J (2049) ICCF 2020 0-1 (27)}) (4. Nc3 Bb4 5. Bd2 O-O 6. e3 Bb7 7. Be2 Na6 8. Nf3 Nc5 9. dxe6 dxe6 10. O-O Qe7 11. a3 Bxc3 12. Bxc3 Rad8 13. Bd4 Nce4 14. Qc2 c5 15. Bxf6 Qxf6 {Gallo,C (1970)-Iacomi,S (2066) ICCF 2014 0-1 (47)}) 4... Bb4+ 5. Bd2 Qe7 6. Bg2 c6 7. dxc6 dxc6 8. Nc3 O-O 9. Nf3 Ba6 10. Ne5 Rd8 11. Qc2 Bd6 12. Bf4 g5 13. Bxc6 Nxc6 14. Nxc6 Qb7 15. Qa4 {Di Pietro,R-Lanzani,P (1891) ICCF 2008 0-1 (35)}) 4. Bd2 Qe7 5. Nc3 Nf6 6. a3 Bxc3 7. Bxc3 Bb7 8. dxe6 Qxe6 9. e3 O-O 10. Nf3 Nc6 11. b3 Ne4 12. Bb2 Rad8 13. Bd3 d5 14. O-O dxc4 {Jones,L-Lam,D (1718) ICCF 2008 1/2-1/2 (41)}) (3. Bf4 Nf6 4. Nc3 Bb4 5. e3 Bb7 6. Nge2 O-O 7. a3 Be7 8. Bg3 Nh5 9. Qc2 d6 10. Nf4 Nxf4 11. Bxf4 Nd7 12. O-O-O a5 13. h4 f5 14. Bg3 Nf6 {Höxter,H (2155) -Dreisch,J (2113) ICCF 2016 1-0 (56)}) 3... Bb7 (3... Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 Bb7 6. Nc3 Nh6 7. f4 O-O 8. Nf3 f5 9. Bd3 Nc6 10. a3 Qe8 11. O-O-O Na5 12. Kb1 Qg6 13. Ne5 Qe8 14. Qc2 d6 15. Nf3 {Hey,B-Catania,D (1708) ICCF 2018 1-0 (36)}) 4. Bd3 (4. f3 f5 (4... d5 5. e5 Ne7 6. Nc3 Nf5 7. Nge2 dxc4 8. Qa4+ Nc6 9. Bf4 g5 10. Bg3 a6 11. Bf2 b5 12. Qd1 Nb4 13. Nc1 Nxd4 14. Bxd4 Qxd4 15. Qxd4 Nc2+ 16. Kf2 {Cencetti,A (1763)-Pareschi,R ICCF 2007 0-1}) 5. Nc3 (5. exf5 Nh6 6. fxe6 Nf5 7. Bf4 dxe6 8. Nc3 Nxd4 9. Qd2 Nbc6 10. O-O-O e5 11. Bxe5 Nxe5 12. Qxd4 Qxd4 13. Rxd4 Bc5 14. Rd1 O-O 15. Bd3 Nxd3+ 16. Rxd3 {1/2-1/2 (16) Palladino,M (1970)-Dorn,M (1930) ICCF 2013}) 5... Bb4 6. exf5 (6. e5 Qh4+ 7. g3 Qh5 8. Bg2 Nc6 9. Nh3 h6 10. Nf4 Qf7 11. Nd3 Be7 12. Be3 Na5 13. b3 a6 14. O-O h5 15. d5 g5 16. Qd2 Qg7 17. Rae1 h4 {McLaughlin,E (1681)-Catania,D (1720) ICCF 2013 0-1 (47)}) 6... Nh6 (6... exf5 7. Nh3 (7. Qe2+ Ne7 8. Bg5 O-O 9. O-O-O h6 10. Bh4 Rf7 11. Qc2 Qf8 12. Bd3 Nbc6 13. Nge2 Ng6 14. Bg3 Bxc3 15. Qxc3 Nb4 16. Bb1 d5 17. a3 Nc6 18. Bd3 Rf6 {Beck,G (1965)-Blondel,F (1993) ICCF 2013 1/2-1/2 (34)}) 7... Nc6 8. Bg5 Nf6 9. Qe2+ Qe7 (9... Kf7 10. O-O-O Bxc3 11. bxc3 h6 12. Bh4 g5 13. Bf2 Ba6 14. Qc2 Na5 15. c5 Bxf1 16. Rhxf1 Qc8 17. Qxf5 Qa6 {1/2-1/2 (17) Grube,F (2222)-Achatz,K (2266) ICCF 2014}) 10. Bxf6 Qxe2+ 11. Bxe2 gxf6 12. Rd1 Bxc3+ 13. bxc3 Na5 14. c5 {1-0 (14) Girard, E-Lasserre,L ICCF 2008}) 7. fxe6 Nf5 (7... O-O 8. Be3 (8. Bd3 Qh4+ (8... Nf5 9. Bxf5 Rxf5 10. Nge2 Qh4+ 11. Ng3 Bd6 12. Nce2 Bxf3 13. gxf3 Rxf3 14. Rf1 Rxf1+ 15. Kxf1 Qxh2 16. Qd3 dxe6 17. Qe4 Nc6 18. Qxc6 Rf8+ 19. Ke1 Bxg3+ 20. Kd2 { Jefferson,N (2060)-Bruce,R (1911) ICCF 2017 1-0 (47)}) 9. g3 Qf6 10. Bd2 Nf5 11. Ne4 Qe7 12. Ne2 Nc6 13. O-O dxe6 14. Bg5 Qd7 15. a3 Be7 16. d5 Ne5 17. N2c3 h6 18. Bxe7 Nxe7 19. Be2 exd5 {Lindberg,W (2186)-Taylor,W (2034) ICCF 2020 1/ 2-1/2 (62)}) (8. Nh3 Qh4+ (8... Nf5 9. a3 Be7 10. Bd3 Bh4+ 11. g3 dxe6 12. d5 Nd7 13. O-O Bf6 14. Nf4 Nc5 15. Bxf5 exf5 16. Be3 Qe7 17. Re1 Rae8 18. Qc2 Nd7 19. Kg2 Ne5 20. Bd4 {Efremov,A (2111)-Shorokhov,S (2300) ICCF 2008 1-0 (28)}) 9. g3 Qe7 10. Be2 Qxe6 11. Nf4 Qf6 12. O-O Nf5 13. Nb5 Na6 14. Nd5 Bxd5 15. cxd5 c6 16. dxc6 dxc6 17. Nc3 b5 18. a4 Qxd4+ 19. Kh1 Bxc3 {Hospers,B (1988) -Abcouwer,J ICCF 2016 1-0 (52)}) (8. a3 Qh4+ 9. g3 Bxc3+ 10. bxc3 Qf6 11. Bd3 dxe6 12. Qc2 Nf5 13. Ne2 Nd7 14. O-O e5 15. c5 exd4 16. cxd4 Nxd4 17. Qc4+ Ne6 18. Bb2 Qh6 19. Bc1 Qf6 {Kurowski,A (2123)-Pietrzak,J (2307) ICCF 2011 1/2-1/2} ) 8... Nf5 9. Qd2 Re8 (9... dxe6 10. O-O-O Nc6 11. Nge2 Qe8 12. Bf2 Rd8 13. Qe1 Qf7 14. Kb1 Rfe8 15. a3 Be7 16. Ne4 Rd7 17. h4 h6 18. d5 exd5 19. cxd5 Rxd5 20. Rxd5 Qxd5 21. Nf4 {Glukhovtsev,S (2271)-Shorokhov,S (2300) ICCF 2008 1-0}) 10. O-O-O Nxe3 11. Qxe3 Rxe6 12. Qd2 Bxc3 13. Qxc3 Qe7 14. Kb1 a5 15. Bd3 Re3 16. a3 d6 17. Ne2 Nd7 18. Ng3 Rf8 19. Qc2 {McGinnes,B (2140)-Davidson,J (2112) ICCF 2016 1-0 (38)}) (7... dxe6 8. Bd3 O-O 9. Nge2 Nf5 10. Bxf5 exf5 11. Bf4 Nc6 12. Rc1 Bd6 13. O-O Nxd4 14. Bxd6 Nxe2+ 15. Nxe2 cxd6 16. Qd4 Qc7 17. Rcd1 Qc5 18. Nf4 Rae8 19. h4 {Deforel,J (2207)-Davidson,J (2104) ICCF 2019 1-0 (39)} ) 8. Bd3 (8. Bf4 dxe6 (8... Qh4+ 9. g3 Qf6 (9... Qe7 10. Qd3 dxe6 11. Nge2 Nd7 12. Bh3 g5 13. Bd2 O-O-O 14. Bxf5 exf5 15. O-O-O Rhf8 16. Nd5 Bxd2+ 17. Rxd2 Qf7 18. f4 Bxd5 19. cxd5 Qxd5 20. Qa6+ Kb8 21. Rhd1 {Aiken,R (2246)-Mansour,W (2323) ICCF 2005 1-0 (40)}) 10. a3 Bxc3+ 11. bxc3 dxe6 12. Bxc7 O-O 13. Be5 Qe7 14. Qe2 Nd7 15. Bg2 Nxe5 16. Qxe5 Nd6 17. Bh3 Rae8 18. Qe2 Ba6 19. f4 Bxc4 20. Qc2 {Cacas,A (1670)-Catania,D (1594) ICCF 2020 0-1 (39)}) (8... O-O 9. Qd2 dxe6 10. O-O-O Nc6 11. d5 Bxc3 12. Qxc3 exd5 13. Rxd5 Qe7 14. Qd2 Qf7 15. Rd7 Nfe7 16. Bg3 Bc8 17. Rxc7 Bf5 18. Nh3 Rad8 19. Qe3 Qf6 20. Qc3 {Guðlaugsson,E (2340) -Knöppel,B (2099) ICCF 2004 1/2-1/2 (34)}) 9. Qa4+ (9. Qd3 Qxd4 10. Qxd4 Nxd4 11. O-O-O Bxc3 12. bxc3 Nf5 13. Nh3 (13. Bd3 Nd7 14. Bxc7 Rc8 15. Bf4 Nc5 16. Bxf5 exf5 17. Bd6 Ba6 18. Nh3 Ne6 19. c5 Kf7 20. Nf4 Rhe8 21. Rd5 g6 22. Nxe6 Rxe6 23. Rhd1 Bc4 24. R5d4 {1/2-1/2 (24) Shuler,J (2135)-Benedetto,D (2125) ICCF 2016}) 13... Na6 14. Be2 Nc5 (14... O-O 15. Rhe1 Rae8 16. Bf1 h6 (16... Re7 17. Nf2 Nc5 18. Ng4 Bc6 19. Ne5 Ba4 20. Rd2 Nd6 21. Be3 Ncb7 22. Bf2 c5 23. Bh4 Rc7 24. Bg3 Nf5 25. Bf2 Nfd6 26. Ng4 Re7 27. Bg3 Nf7 28. Bd3 {Morley,P (2391)-Gaujens,A (2265) ICCF 2013 1-0 (84)}) 17. Nf2 g5 18. Be5 Rd8 19. Nd3 Rf7 20. c5 Rfd7 21. Rd2 Nxc5 22. Nxc5 bxc5 23. Rxd7 Rxd7 24. Bb5 Re7 25. Bf6 Rf7 26. Rxe6 {Prívara,I (2501)-Gaujens,A (2251) ICCF 2019 1/2-1/2 (57)}) (14... h6 15. Be5 O-O 16. Rhe1 Ne3 17. Rd2 Rad8 18. Nf4 g5 19. Nxe6 Rxd2 20. Kxd2 Nxg2 21. Nxf8 Nxe1 22. Kxe1 Kxf8 23. f4 Kf7 24. Bh5+ Ke7 25. Kd2 Bc8 26. Bg7 { Rolón,M-Davidson,J (2049) ICCF 2020 1/2-1/2 (38)}) 15. Rhe1 O-O 16. Bf1 Nd6 17. Be5 Rae8 18. Nf2 Rf7 19. Bxd6 cxd6 20. Rxd6 Rd7 {Muljadi,P (2322)-Jefferson,N (2142) ICCF 2018 1-0 (60)}) (9. Qd2 Nxd4 10. O-O-O (10. Nge2 c5 11. a3 Bxc3 12. bxc3 Ndc6 13. Qe3 O-O 14. Ng3 Qf6 15. Bd6 Ne7 16. Rd1 Nbc6 17. Bd3 Rfd8 18. Bc7 Rdc8 19. Ne4 Qh4+ 20. Bg3 Nf5 21. Qe2 Nxg3 {Giesel,M-Gaujens,A (2227) ICCF 2014 1-0 (69)}) 10... Nbc6 11. Nge2 Nf5 12. Qxd8+ Rxd8 13. Bxc7 Rxd1+ 14. Nxd1 e5 15. Nec3 Bxc3 16. Nxc3 Kd7 17. Nd5 Re8 18. f4 b5 19. b3 Rc8 20. Bd3 Ncd4 { Hassim,U (2358)-Skorna,U (2274) ICCF 2019 1/2-1/2 (30)}) 9... Nc6 10. O-O-O ( 10. d5 exd5 (10... Bxc3+ 11. bxc3 exd5 12. O-O-O Qf6 13. cxd5 Qxc3+ 14. Kb1 Qb4+ 15. Qxb4 Nxb4 16. Bb5+ Kf7 17. Nh3 (17. Bc4 Nd6 18. Bxd6 cxd6 19. Ne2 Ba6 20. Bxa6 {1/2-1/2 (20) Beck,G (1882)-Bontems,C (2068) ICCF 2012}) 17... Nxd5 18. Bc4 Nfe7 {1/2-1/2 (18) Walczak,P (2471)-Gaujens,A (2272) ICCF 2014}) 11. O-O-O Bxc3 12. cxd5 Qf6 13. dxc6 (13. Kb1 Ba5 14. dxc6 Bxc6 15. Qa3 Rd8 16. Bd3 Rd7 17. Nh3 Qf8 18. Rhe1+ Bxe1 19. Rxe1+ Ne7 20. Bg5 a5 21. Qc3 Bd5 22. Nf4 Qf7 23. Bxe7 Bxa2+ 24. Ka1 Rxe7 {Schyndel,A-Curry,S (1888) ICCF 2008 1-0 (27)}) 13... Bxc6 14. Qa3 Bd4 15. Re1+ Kd7 16. Ba6 Nd6 17. Ne2 Rhe8 18. Bd2 b5 19. Nxd4 Qxd4 20. Be3 Qc4+ 21. Kb1 Re5 {Bobel,P (2158)-Girard,E ICCF 2007 1/2-1/2 (29)}) 10... Nfxd4 (10... Bxc3 11. bxc3 O-O 12. Nh3 Qe7 13. Bd3 Qf6 14. Bxc7 Rf7 15. Bf4 h6 16. Rhe1 g5 17. Bxf5 exf5 18. Be5 Nxe5 19. dxe5 Qc6 20. Qxc6 Bxc6 21. Rd6 Ba4 22. Rxh6 {Kleine,L (1995)-Catania,D (1594) ICCF 2020 1-0 (34)} ) (10... O-O 11. d5 exd5 12. cxd5 Bxc3 13. dxc6 Bxb2+ 14. Kxb2 Qf6+ 15. Kb1 Bxc6 16. Qc4+ Kh8 17. Nh3 Rad8 18. Be2 h6 19. Rxd8 Rxd8 20. Rd1 Rxd1+ 21. Bxd1 Nh4 22. Qe2 {Kleine,L (1995)-Catania,D (1720) ICCF 2013 1-0 (27)}) 11. Be3 (11. Nb5 O-O 12. Bxc7 Qg5+ 13. f4 Qh6 14. Nxd4 Rxf4 15. Bxf4 Qxf4+ 16. Kb1 Nxd4 17. Nf3 Nxf3 18. Qxb4 Be4+ 19. Ka1 Nd4 20. Qd2 Nc2+ 21. Kb1 Nb4+ (21... Ne3+ 22. Ka1 Rf8 23. Rc1 Nc2+ 24. Rxc2 Bxc2 25. Qxc2 Qxf1+ 26. Rxf1 Rxf1+ 27. Qb1 Rxb1+ 28. Kxb1 Kf7 29. Kc2 Kf6 30. Kd3 Kf5 31. b4 Ke5 32. g4 g5 33. Ke3 {Grego,L (1935)-Vlasov,A ICCF 2008 1-0 (48)}) 22. Ka1 {1/2-1/2 (22) Hospers,B (1916) -Jaksa,C (2033) ICCF 2015}) (11. Nce2 Nxe2+ 12. Nxe2 Qf6 13. Bxc7 O-O 14. Nd4 Nxd4 15. Qxb4 Rf7 16. Qc3 Qh6+ 17. Kb1 Nxf3 18. Bg3 Raf8 19. Bd3 Nh4 20. Bxh4 Qxh4 21. g3 Qh6 22. Rhe1 {1/2-1/2 (22) Kireev,V (2162)-Eremin,N (2062) ICCF 2012}) 11... e5 12. Bd3 a6 13. Bxd4 exd4 14. Nd5 b5 (14... Qd6 15. Nh3 (15. Nxb4 Qxb4 16. Qxb4 Nxb4 17. Re1+ Kf7 18. Bb1 Rae8 19. Nh3 g6 20. a3 Nc6 21. Rd1 Re3 22. Be4 Re8 23. Bxc6 Bxc6 24. Rxd4 h6 25. Nf4 g5 26. Nd5 Re2 {Bieringa,R (2167)-Bragesjö,T (2193) ICCF 2021 1/2-1/2 (40)}) 15... O-O-O 16. Ng5 b5 17. Qb3 bxc4 18. Bxc4 Qh6 19. h4 Bc5 20. Nf4 Na5 21. Qd3 Nxc4 22. Qf5+ Kb8 23. Qxc5 Rd6 24. Kb1 Qf6 25. Nge6 Rxe6 26. Qxc4 {Kind,M (2017)-Bragesjö,T (2210) ICCF 2021 1/2-1/2 (38)}) 15. Qc2 Qd6 16. Qe2+ Kd8 17. Nh3 Re8 18. Be4 bxc4 19. Qxc4 Bc5 20. Ng5 Ne5 21. Qb3 Rb8 22. Nf4 Kc8 23. Bf5+ Nd7 24. Nd3 Bd5 25. Qa4 Rb5 26. Rhe1 Rxe1 27. Rxe1 Kb7 28. Ne4 Bxe4 29. Rxe4 Bb6 30. Re6 Nc5 31. Qxb5 axb5 32. Rxd6 cxd6 33. b4 Nxd3+ 34. Bxd3 d5 35. Bxh7 Bc7 36. g3 Bd6 37. a3 Kc6 38. Bd3 g5 39. Kc2 Be7 40. Bg6 d3+ 41. Kxd3 Kd7 42. Bf7 Bf6 43. Bxd5 Bb2 44. Ke4 Bxa3 45. Kf5 Kd6 46. Be4 Bc1 47. Bd3 Kc6 48. h4 gxh4 49. gxh4 Bd2 50. Ke6 Bf4 51. Bg6 Kc7 52. Be8 Kb6 53. h5 Bd2 54. Kf5 Kc7 55. Bxb5 Bxb4 56. h6 Kd6 57. Kf6 Bc3+ 58. Kf7 Ke5 59. Bc6 Kf4 60. h7 {1-0 (60) Lundberg,C (2289)-Knöppel,B (2050) ICCF 2017 Unusual replies to-1 d4}) 8... Nxd4 (8... Qh4+ 9. Kf1 O-O ( 9... Nxd4 10. Nd5 Bd6 11. g3 Bxg3 (11... Qh5 12. Be4 Nbc6 13. exd7+ Kxd7 14. Be3 Ne6 15. f4 Qxd1+ 16. Rxd1 Rae8 17. Bg2 Kc8 18. Nf3 Nc5 19. Ng5 Na5 20. Bxc5 Bxc5 21. b3 c6 22. Nc3 Bb4 23. Rd3 {Krapivtsev,A (2338)-Korovin,A ICCF 2009 1/ 2-1/2 (46)}) 12. hxg3 Qxh1 13. Nxc7+ Kd8 14. Be4 Nxf3 15. Qxf3 Qxf3+ 16. Bxf3 Kxc7 17. Bf4+ Kc8 18. Bg4 Re8 19. Bxb8 Kxb8 20. exd7 Rf8+ 21. Ke2 {Jurado Pérez,O (1895)-Rusak,A (1987) ICCF 2014 0-1 (46)}) 10. Nb5 (10. Nd5 Bd6 11. e7 Nxe7 12. Nxe7+ (12. g3 Qh5 13. Nxe7+ Bxe7 14. d5 Na6 15. Kg2 Nc5 16. Nh3 Nxd3 17. Qxd3 c6 18. Re1 Bf6 19. Nf4 Qf7 20. h4 Rae8 21. Rxe8 Rxe8 22. a4 cxd5 23. Nxd5 Bxd5 {Nedoma,P (2403)-Girard,E (2366) ICCF 2010 1/2-1/2 (27)}) 12... Bxe7 13. Be3 Nc6 14. Bf2 Qh6 15. h4 Rae8 16. Qb3 Kh8 17. h5 d5 18. cxd5 Nb4 19. Bc4 b5 20. Bxb5 Bxd5 21. Bc4 Qc6 {Tõnisson,P (2319)-Tedesco,M (2339) ICCF 2020 1/ 2-1/2 (77)}) 10... Nc6 11. Bxf5 Rxf5 12. a3 Bf8 13. exd7 Rd8 14. Be3 Rxd7 15. Qc2 Rff7 16. Bf2 Qf6 17. d5 Ne5 18. Bd4 c6 19. dxc6 Bxc6 {Zlatariu,M (2400) -Taras,I (1727) ICCF 2010 1-0 (43)}) 9. Be4 Nbc6 10. exd7+ Qxd7 11. Nge2 O-O-O 12. O-O Ne5 13. Nd5 Ne6 14. Qc2 Bc5+ 15. Kh1 Nxc4 {Jenkinson,S (2215)-Davidson, J (2195) ICCF 2013 1-0 (38)}) (4. d5 Bb4+ (4... Nf6 5. Bd3 b5 6. cxb5 exd5 7. e5 Ne4 8. Nf3 a6 9. O-O axb5 10. Bxb5 c6 11. Bd3 Nc5 12. Bc2 Ne6 13. Nc3 g6 14. Re1 Bg7 15. Nd4 O-O 16. Nxe6 {Romualdi,R (1924)-Schulz,B (1860) ICCF 2019 0-1 (45)}) (4... exd5 5. exd5 Bb4+ 6. Bd2 Qe7+ 7. Qe2 Qxe2+ 8. Nxe2 Bxd2+ 9. Kxd2 Nf6 10. Nbc3 O-O 11. Nd4 c6 12. Nf5 Na6 13. Re1 Nc7 14. Be2 cxd5 15. Ne7+ Kh8 16. Bf3 {Kratochvíl,J (2098)-Breederveld,H (2020) ICCF 2010 1/2-1/2 (31)}) 5. Bd2 Qe7 6. Bd3 (6. Bxb4 Qxb4+ 7. Nc3 Qxb2 8. Nge2 Qb4 9. Qd4 f6 10. Rb1 Qe7 11. Ng3 Nh6 12. Be2 Nf7 13. O-O Na6 14. Rfd1 Nc5 15. Nb5 d6 16. Qe3 O-O 17. Bg4 e5 {Lixa,A (1695)-Cabral,R (1917) ICCF 2005 0-1 (63)}) 6... exd5 7. cxd5 Bxd5 8. Bxb4 Qxb4+ 9. Qd2 Qxd2+ 10. Nxd2 Bb7 11. Ngf3 Nc6 12. O-O O-O-O 13. Nc4 f6 14. Rfe1 Nge7 15. e5 fxe5 {Gosling,D (1502)-Picken,R (1758) ICCF 2015 0-1 (34)}) ( 4. Nf3 Bxe4 5. Nc3 Bb4 6. g3 (6. Be2 Nf6 7. O-O Bb7 8. Bg5 O-O 9. a3 Be7 10. h3 d5 11. Rc1 Nbd7 12. cxd5 Nxd5 13. Bxe7 Nxe7 14. Bd3 Nf6 15. Ne5 Rc8 16. Qa4 a5 {Jaszczowski,Z (1686)-Wister,F (2359) ICCF 2020 0-1 (39)}) 6... Nc6 7. Bg2 Bxc3+ 8. bxc3 Na5 9. O-O Nxc4 10. Qe2 Bd5 11. Bg5 f6 12. Nh4 c6 13. Bxd5 cxd5 14. Bf4 g5 15. Qh5+ Kf8 {Anderson,L (1021)-Schulz,B (1771) ICCF 2017 0-1 (30)}) 4... Nc6 (4... Bb4+ 5. Bd2 (5. Kf1 Nc6 (5... Be7 6. Nc3 d6 7. Nf3 Nd7 8. Qe2 ( 8. h4 Ngf6 9. Bc2 e5 10. Qe2 O-O 11. h5 h6 12. Be3 Ng4 13. Bd2 a5 14. Rd1 Bf6 15. Be1 exd4 16. Nxd4 Bxd4 17. Rxd4 Ngf6 18. f3 Qe7 19. Kg1 Qe5 {Bhattacharjea, R (2105)-Groffen,J (2184) ICCF 2020 1-0 (51)}) 8... Ngf6 9. g3 O-O 10. Kg2 h6 11. Rb1 Nh7 12. h4 Re8 13. g4 c5 14. d5 Bf6 15. Qd1 Bxc3 16. bxc3 exd5 17. exd5 {Ramirez,J (2360)-Legemaat,G (2365) ICCF 2018 1/2-1/2 (27)}) (5... Bf8 6. Nc3 g6 7. Nf3 Bg7 8. Be3 d6 9. Qd2 Nd7 10. Re1 Ngf6 11. Bh6 O-O 12. Bxg7 Kxg7 13. h4 e5 14. Nd5 h5 15. Rh3 c6 16. Ne3 Ng4 17. Rg3 {Limontas,M (2311)-Sogin,D (2334) ICCF 2017 0-1 (53)}) 6. Nf3 Be7 7. a3 (7. Nc3 Nb4 8. Be2 a5 9. a3 Na6 10. h4 d6 11. Qc2 Qd7 12. Bf4 f6 13. Rd1 O-O-O 14. c5 bxc5 15. dxc5 Nxc5 16. Be3 Qc6 17. Nd4 Qd7 18. b4 {1-0 (18) Saevich,Y (2232)-Beday,A (2029) ICCF 2020} ) 7... d6 {0-1 (7) Ward,A-Jones,B ICCF 2016}) (5. Nc3 f5 (5... Nc6 6. Nge2 Nf6 7. O-O Bxc3 8. bxc3 O-O 9. e5 Ng4 10. Ng3 f5 11. h3 f4 12. Qxg4 fxg3 13. Qxg3 Qe7 14. Bg5 Qf7 15. Qh4 g6 16. Bf6 d6 17. f4 {Linden,W (1663)-van Stratum,T ICCF 2020 1-0}) (5... Bxc3+ 6. bxc3 f5 7. Qh5+ g6 8. Qe2 fxe4 9. Bxe4 Bxe4 10. Qxe4 Nc6 11. Nf3 Nf6 12. Qh4 h6 13. d5 exd5 14. O-O d6 15. cxd5 Ne5 16. Nxe5 dxe5 17. f4 {Lund,S (2308)-Davidson,J (2109) ICCF 2020 1-0 (45)}) 6. Qe2 (6. Qh5+ g6 7. Qe2 (7. Qh3 fxe4 8. Bc2 Qf6 (8... Nf6 9. Nge2 O-O 10. Bg5 Nc6 (10... Be7 11. O-O Nc6 12. Bxf6 Bxf6 13. Bxe4 Qe7 14. Rfe1 Na5 15. Bxb7 Nxb7 16. Qd3 Bg7 17. Rad1 Rae8 18. g3 Qf7 19. f4 Qf5 20. Kg2 Nd6 21. b3 Qa5 22. Nb5 { Modliba,F-Schabata,W (2148) ICCF 2008 1/2-1/2}) 11. Bxe4 Nxe4 12. Bxd8 Nxf2 13. Qe3 Nxh1 14. Bh4 e5 15. d5 Bc5 16. Qh3 Nd4 17. Qxd7 Nc2+ 18. Kd2 Nxa1 19. Qxc7 Rf7 20. Qxe5 {Barrera González,N-Gaujens,A (2264) ICCF 2017 1-0 (47)}) 9. Nge2 Nc6 10. Bxe4 (10. O-O Nxd4 11. Nxd4 Qxd4 12. Be3 {1-0 (12) Kitich,Z-Powe,M ICCF 2021}) 10... Nge7 (10... O-O-O 11. Qg3 Nge7 12. Bg5 Qg7 13. a3 Bxc3+ 14. Qxc3 d5 15. cxd5 Nxd5 16. Qc4 Rd7 17. Rc1 Rf8 18. Qa4 Rd6 19. O-O Kb8 20. Rfe1 Nce7 21. Nc3 Bc6 22. Qc2 {Zielinski,S (2337)-Bender,K (2314) ICCF 2018 1/2-1/2 (31)}) 11. O-O O-O-O 12. Qg3 d5 13. Bg5 Qg7 14. Bd3 a6 15. c5 bxc5 16. a3 Bxc3 17. bxc3 c4 18. Bc2 Rde8 {Zaas,J (2276)-Gaujens,A (2280) ICCF 2020 1-0 (27)}) 7... Nf6 8. Bg5 fxe4 (8... h6 9. Bxf6 Qxf6 10. e5 Qg5 11. f3 Nc6 12. Qf2 d6 13. f4 Nxe5 14. dxe5 Qxg2 15. exd6 Bxd6 {0-1 (15) Rheindt,S (1629)-Robeille,J ICCF 2018}) 9. Bxe4 Nxe4 (9... Bxe4 10. Bxf6 Qxf6 (10... Bxc3+ 11. bxc3 Qxf6 12. Qxe4 O-O 13. Nf3 Nc6 14. O-O Qf5 15. Qe2 Rae8 16. Rae1 d6 17. Qd1 Na5 18. c5 dxc5 19. Re5 Qf6 20. dxc5 Nc4 21. Re4 Qxc3 22. Qd7 {Sileika,A (1689)-Schulz,B (1778) ICCF 2016 1-0 (29)}) 11. Qxe4 Nc6 12. Nf3 Qf5 13. Qe3 O-O-O 14. O-O g5 15. Rad1 g4 16. Ne5 Nxe5 17. dxe5 Rhf8 18. Nb5 Qc2 19. Rc1 Qd2 20. Qxd2 Bxd2 21. Rc2 {Putten,F (1889)-Lagergren,H (2073) ICCF 2016 0-1 (49)}) 10. Bxd8 Nxc3 11. bxc3 Bxc3+ 12. Kf1 Bxa1 13. Bxc7 Bxd4 14. Bd6 (14. Nf3 Bc5 15. Be5 Rf8 16. Bg3 Nc6 17. Qd2 O-O-O 18. Ke2 Ba6 19. Rc1 d5 20. Kf1 Bxc4+ 21. Kg1 e5 22. Rxc4 dxc4 23. Qe2 b5 24. h3 Rf5 25. Qe4 Kc7 {Straub,A-Eddy,S ICCF 2005 0-1 (38)}) 14... Nc6 15. Nf3 Bf6 16. Qe4 O-O-O {Dewald,H (1945)-Gaujens,A (2265) ICCF 2013 0-1 (53)}) (6. f3 Qh4+ (6... Nh6 7. Qb3 (7. Nh3 Qh4+ 8. Nf2 fxe4 9. g3 Qf6 10. Bxe4 d5 11. Bc2 Nc6 12. a3 Nxd4 13. axb4 Nxf3+ 14. Kf1 O-O 15. cxd5 exd5 16. Bb3 Nd4 17. Nce4 Qf3 18. Qxf3 Rxf3 {Fagerström,M (2286)-Gaujens,A (2264) ICCF 2017 0-1 (43)}) (7. h4 Qf6 8. e5 Qg6 9. Kf1 Nc6 10. Nge2 O-O-O 11. a3 Be7 12. b4 d6 13. exd6 Rxd6 14. Be3 Rdd8 15. c5 Rhf8 16. Rc1 e5 17. d5 Kb8 18. Qa4 Ng4 {Muschalek,I (2413)-Gaujens,A (2404) ICCF 2007 1-0 (38)}) (7. Bxh6 Qh4+ 8. Kf1 Qxh6 9. exf5 Nc6 10. fxe6 dxe6 11. d5 Ne5 12. Qa4+ Bc6 13. Nb5 O-O 14. dxc6 Nxd3 15. Qc2 Rad8 16. Nxc7 Nf4 17. Na6 Rd2 18. Nxb4 Rxc2 {Hirsso,J (1947) -Vornanen,A (2343) ICCF 2010 0-1}) 7... a5 8. a3 Bxc3+ 9. Qxc3 O-O 10. Nh3 Qh4+ 11. Nf2 fxe4 12. g3 Qf6 13. Bxe4 d5 14. cxd5 exd5 15. Qb3 a4 16. Bxd5+ Nf7 17. Qc4 Bxd5 18. Qxd5 {Dox,D-Dorn,M ICCF 2013 0-1 (57)}) (6... fxe4 7. fxe4 Bxc3+ ( 7... Nf6 8. Bg5 (8. Nh3 Bxe4 9. Bxe4 Nxe4 10. Qh5+ g6 11. Qe5 Nf6 12. O-O O-O 13. Bg5 Be7 14. d5 Ng4 15. Qe4 Bxg5 16. dxe6 Na6 17. Qxg4 Bf6 18. Nd5 dxe6 19. Qxe6+ Kg7 {Lindberg,W (1934)-Lagergren,H (2073) ICCF 2016 1/2-1/2 (40)}) 8... h6 9. Bxf6 Bxc3+ 10. bxc3 Qxf6 11. Nf3 O-O 12. O-O Qe7 13. Bc2 Nc6 14. d5 exd5 15. cxd5 Ne5 16. Qd4 Nxf3+ 17. gxf3 Rf4 18. Bb3 d6 19. Kh1 {Richardson,D (1757) -Cochrane,R ICCF 2013 0-1 (44)}) 8. bxc3 Bxe4 9. Qh5+ g6 10. Qe5 Bxg2 11. Qxh8 Qh4+ 12. Kd2 Qf2+ 13. Ne2 Bxh1 14. Qxg8+ Qf8 15. Qxf8+ Kxf8 16. Ba3+ d6 17. Rxh1 Ke7 18. Be4 {Schmidt,K (2172)-Pope,P (1574) ICCF 2016 1-0 (32)}) (6... Bxc3+ 7. bxc3 fxe4 8. Bxe4 Bxe4 9. fxe4 Qh4+ 10. Kf1 Qxe4 11. Nf3 Nf6 12. Ba3 c5 13. Kf2 Ng4+ 14. Kg3 Qg6 15. Nh4 Qe4 16. Qxg4 Qxg4+ 17. Kxg4 d6 18. dxc5 { Humbert,P (1534)-Schulz,B (1920) ICCF 2013 0-1 (36)}) (6... g6 7. Nge2 c5 8. Bd2 cxd4 9. Nxd4 Nc6 10. Nxc6 dxc6 11. Qc2 Bc5 12. O-O-O Qf6 13. Ne2 Ne7 14. f4 O-O 15. Bc3 Qf7 16. h3 Be3+ 17. Bd2 Bc5 18. g4 {Pronovost,D (1799)-Silverman,R ICCF 2014 0-1 (74)}) (6... Nc6 7. Nge2 fxe4 8. Bxe4 d5 9. cxd5 exd5 10. Bd3 Qh4+ 11. g3 Qf6 12. Qd2 O-O-O 13. Qf4 Qe7 14. O-O Kb8 15. a3 Bxc3 16. bxc3 Nf6 17. a4 Rde8 18. Ra2 {Zhuravlev,K (2127)-Simonov,N ICCF 2020 0-1 (40)}) 7. g3 Qh5 8. Qe2 (8. Bf4 fxe4 9. Bxe4 Nc6 10. d5 exd5 11. cxd5 Bxc3+ 12. bxc3 Nce7 13. d6 Bxe4 14. fxe4 Qxd1+ 15. Rxd1 cxd6 16. Nf3 Nf6 17. O-O d5 18. exd5 O-O 19. c4 Ng6 {Gerbaudo,P-Girard,E ICCF 2008 0-1 (52)}) (8. exf5 Ne7 9. fxe6 dxe6 10. Be4 Nbc6 11. Nge2 O-O-O 12. Qb3 Rxd4 13. O-O Bxc3 14. Bxc6 Nxc6 15. Qxc3 Rd7 16. Nf4 Qe5 17. Bd2 Nd4 18. Rae1 Qf5 19. Re3 Rf8 {Gorshkov,Y (2257)-Eremin, N (2062) ICCF 2012 0-1 (30)}) 8... Nc6 (8... fxe4 9. fxe4 Bxc3+ 10. bxc3 Qxe2+ 11. Nxe2 Nf6 12. d5 e5 13. O-O d6 14. Kg2 Na6 15. Bg5 Nc5 16. Bc2 Nfxe4 17. Be3 Ba6 18. Bxc5 Nxc5 19. Rae1 Bxc4 20. Rf5 {Verslype,S (1424)-Deligne,T ICCF 2018 0-1 (41)}) 9. Be3 O-O-O 10. O-O-O fxe4 11. fxe4 Qa5 12. d5 exd5 13. cxd5 Ne5 14. Bd4 Nxd3+ 15. Qxd3 Nf6 16. Nge2 Ba6 17. Qc2 Bxe2 {Humbert,P-Girard,E (2307) ICCF 2010 0-1 (30)}) (6. d5 fxe4 7. Bxe4 Nf6 (7... Qh4 8. Qd3 Nf6 9. Bf3 Na6 10. Be3 Nc5 11. Bxc5 Bxc5 12. g3 Qh6 13. dxe6 O-O-O 14. Bxb7+ Kxb7 15. exd7 Rxd7 16. Qf3+ Kb8 17. Nge2 Qd2+ 18. Kf1 Rd3 19. Qf5 {Verslype,S-Girard,E ICCF 2008 0-1 (42)}) 8. Bg5 (8. Qd3 Na6 (8... Nxe4 9. Qxe4 O-O 10. Nge2 Bxc3+ 11. bxc3 Qe8 12. Qd4 Qf7 13. O-O exd5 14. cxd5 Bxd5 15. Bb2 Nc6 16. Qe3 Rae8 17. Qd2 Bxg2 18. Kxg2 Qf3+ 19. Kg1 Rxe2 20. Qc1 {Mascaró Pastor,M-Recasens Sánchez, J ICCF 2006 0-1}) 9. Bg5 Nc5 10. Qf3 Ncxe4 11. Qxe4 Nxe4 12. Bxd8 Rxd8 13. Nge2 exd5 14. O-O dxc4 15. a3 Nxc3 16. bxc3 Bc5 17. Rfe1 O-O {0-1 (17) Rodríguez Guerrero,R-Lam,D (1718) ICCF 2008}) (8. Bf3 exd5 (8... e5 9. Bd2 O-O 10. Nge2 a5 11. a3 Bxc3 12. Nxc3 d6 13. Qc2 Nbd7 14. O-O Rf7 15. b4 Ba6 16. Be2 Qe7 17. Bd3 Raf8 18. f3 Qe8 19. Rfe1 Kh8 20. Rab1 {Prieckaerts,P (1975)-Wilson,M (1838) ICCF 2016 1-0 (48)}) 9. cxd5 Qe7+ 10. Qe2 Bxc3+ 11. bxc3 Qxe2+ 12. Nxe2 Bxd5 13. Bxd5 Nxd5 14. O-O O-O 15. Bb2 Nc6 16. Ng3 Ne5 17. c4 Nxc4 18. Bd4 Nf4 19. Rac1 d5 {Humbert,P-Soldano,G ICCF 2009 0-1 (29)}) 8... Bxc3+ 9. bxc3 O-O 10. Nf3 Qe8 11. Bxf6 exd5 12. O-O dxe4 13. Bxg7 Kxg7 14. Nh4 Qe6 15. Qd4+ Kg8 16. Rae1 Na6 17. Re3 Rf6 {Leone,M-MacGregor,C (1815) ICCF 2012 0-1 (26)}) (6. Nge2 fxe4 7. Bc2 Nf6 8. Bg5 h6 9. Bh4 O-O 10. O-O Be7 11. Qd2 Qe8 12. Bxf6 gxf6 13. Bxe4 Bxe4 14. Nxe4 Qg6 15. Qe3 f5 16. Nf4 Qg4 17. h3 Qg7 {Sage,F (2312) -Bensiek,N (2352) ICCF 2012 1/2-1/2 (46)}) (6. exf5 Bxg2 7. Qh5+ Kf8 8. Nf3 Bxh1 9. Ne5 Qe8 10. Ng6+ hxg6 11. Qxh8 exf5+ 12. Be3 Bxc3+ 13. bxc3 f4 14. O-O-O fxe3 15. Re1 Nc6 16. Rxe3 Qf7 17. Qh3 Re8 {Neil,C (1497)-Picken,R (1765) ICCF 2016 0-1}) (6. e5 Bxg2 7. Be3 Bxh1 8. Qb3 Bxc3+ 9. Qxc3 Be4 10. O-O-O Bxd3 11. Rxd3 Ne7 12. h4 Nbc6 13. f4 a5 14. Nf3 Nb4 15. Qa3 Nxd3+ {0-1 (15) Fariñas Lucas,J (1325)-Mur Saludas,M ICCF 2020}) 6... fxe4 (6... Nf6 7. f3 (7. d5 Qe7 8. exf5 exd5 9. Qxe7+ Bxe7 10. cxd5 Nxd5 11. Be4 {1-0 (11) Sakienko,V-Hough,G (2029) ICCF 2016}) (7. Bg5 fxe4 (7... c5 8. d5 fxe4 9. Bxe4 O-O 10. Nf3 exd5 11. cxd5 h6 12. Bxf6 Qxf6 13. O-O Bxc3 14. bxc3 Qxc3 15. Rfe1 Ba6 16. Qd1 d6 17. Nh4 Nd7 18. Nf5 Kh8 19. Qa4 {Efimov,A (2228)-Shorokhov,S (2300) ICCF 2008 1-0 (26)}) 8. Bxf6 exd3 9. Qh5+ g6 10. Qg5 Be7 11. Bxe7 Qxe7 12. Qxe7+ Kxe7 13. f3 Nc6 14. O-O-O Nxd4 15. Rxd3 c5 16. Nge2 (16. Rd2 Rad8 17. Nge2 Nf5 18. Re1 Ne3 19. Nf4 Nxc4 20. Rdd1 Rhf8 21. Nh3 Rf5 22. b3 Ne5 23. Ng1 h5 24. Ne4 c4 25. Nd6 Nd3+ 26. Rxd3 cxd3 27. Nxf5+ gxf5 {Lam Choong Wai,E (1830)-Davidson,J (2109) ICCF 2017 0-1 (39)}) 16... Nxe2+ 17. Nxe2 Ba6 18. b3 d5 {Silva,S (1790) -Schulz,B (1773) ICCF 2018 0-1 (38)}) 7... fxe4 (7... Nc6 8. Be3 e5 9. dxe5 fxe4 10. Bc2 Bxc3+ 11. bxc3 Nxe5 12. Bg5 h6 13. Bxe4 Bxe4 14. Bxf6 Qxf6 15. Qxe4 O-O 16. Ne2 Rae8 17. O-O Nxf3+ 18. Qxf3 Qxf3 {Vitale,G-Pannullo,P (2220) ICCF 2021 0-1}) 8. fxe4 Nxe4 9. Bxe4 Bxc3+ 10. Kd1 Bxe4 11. Qxe4 Bxd4 12. Qxa8 O-O 13. Nf3 Qf6 14. Bg5 Qf5 15. Kc1 Nc6 16. Qb7 Qd3 17. Nxd4 Nxd4 {0-1 (17) Strelecky,R (1598)-Catania,D (1720) ICCF 2016}) 7. Bxe4 Bxe4 8. Qxe4 Nc6 9. Nf3 Nf6 10. Qd3 O-O 11. O-O Qe8 12. Be3 a6 13. Ne4 Be7 14. a3 Qg6 15. Nxf6+ Rxf6 16. Qxg6 Rxg6 {Capuzzi,G (1841)-Catania,D (1744) ICCF 2012 1/2-1/2 (41)}) 5... Bxd2+ (5... Qe7 6. Ne2 (6. Nf3 Nc6 7. O-O Bxd2 8. Qxd2 Nb4 9. Re1 Nxd3 10. Qxd3 d6 11. Nc3 Nf6 12. Rad1 O-O 13. e5 Nd7 14. Re3 Rfd8 15. exd6 cxd6 16. d5 e5 17. Nd4 Nc5 {Pettersson,R (2057)-Nordström,Ö (2159) ICCF 2013 1-0 (25)}) 6... Bxd2+ 7. Qxd2 Na6 8. a3 d6 9. Nbc3 Nh6 10. O-O O-O 11. Rad1 Nb8 12. Bc2 Nd7 13. f4 c5 14. dxc5 Nxc5 15. b4 Na6 16. Nb5 Rad8 17. Nxd6 {Gibas,T (2217)-Cornea,A (2128) ICCF 2016 1-0 (39)}) (5... Nc6 6. Nf3 Qf6 7. d5 Bxd2+ 8. Qxd2 Nd4 9. Nxd4 Qxd4 10. Nc3 a6 11. O-O Ne7 12. Ne2 Qf6 13. f4 d6 14. Rf3 O-O 15. Raf1 Ng6 16. Bb1 Bc8 17. Rg3 {Hartwich,A (2273)-Langheld,W (2170) ICCF 2020 1-0 (31)}) 6. Qxd2 ( 6. Nxd2 f5 (6... d6 7. f4 (7. Ne2 Ne7 8. Nf1 d5 9. cxd5 exd5 10. e5 O-O 11. Qc2 Ng6 12. f4 c5 13. Nfg3 Nc6 14. O-O c4 15. Bf5 Qh4 16. Bd7 Nge7 17. Bxc6 Bxc6 18. f5 f6 {Clarke,J (1993)-Jerkovic,L (2002) ICCF 2015 1-0 (39)}) 7... e5 8. fxe5 dxe5 9. d5 Nf6 10. Ngf3 Nbd7 11. Nf1 O-O 12. Ng3 a5 13. O-O Re8 14. Bc2 Nc5 15. b3 Bc8 16. h3 Qe7 17. a3 Bd7 18. Qd2 {Narozhny,Y (2339)-Grayland,S (2404) ICCF 2012 1/2-1/2 (36)}) (6... Nf6 7. Ngf3 d6 8. O-O Nbd7 9. e5 dxe5 10. dxe5 Ng4 11. Qa4 O-O 12. Qc2 Ngxe5 13. Bxh7+ Kh8 14. Nxe5 Nxe5 15. Be4 Bxe4 16. Qxe4 Qf6 17. Rad1 Rad8 18. Qe2 {Adamson,T (1645)-Schulz,B (1771) ICCF 2017 1/ 2-1/2 (45)}) (6... Ne7 7. Ne2 e5 8. O-O exd4 9. Nxd4 Nbc6 10. Nc2 O-O 11. f4 Ng6 12. Nb1 Qh4 13. Qd2 Qe7 14. Nc3 Nb4 15. Rad1 Qc5+ 16. Ne3 f5 17. Bb1 fxe4 18. Bxe4 {Schneider,W (2527)-Haugen,A (2591) ICCF 2007 1/2-1/2 (51)}) (6... Nh6 7. Ne2 O-O 8. O-O Nc6 9. a3 f5 10. Qc2 Kh8 11. Rad1 Qf6 12. Rfe1 Nxd4 13. Nxd4 Qxd4 14. exf5 exf5 15. Nf1 Qh4 16. c5 f4 17. Be4 Bxe4 18. Rxe4 {Bandza,A (2497) -Berzins,R ICCF 2005 1/2-1/2 (35)}) 7. Ngf3 fxe4 8. Nxe4 (8. Bxe4 Bxe4 9. Nxe4 Nf6 10. Qd3 O-O 11. O-O Nc6 12. Rfe1 Ne7 13. Nxf6+ gxf6 14. d5 e5 15. Nh4 Qe8 16. Re3 Kh8 17. d6 cxd6 18. Qxd6 Rc8 19. Rh3 Rc6 {Young III,W (1986)-Catania,D (1747) ICCF 2009 1-0}) 8... Nf6 9. Qc2 Nxe4 (9... Nc6 10. a3 Qe7 11. O-O-O (11. O-O O-O-O 12. Rac1 h6 13. d5 Nb8 14. c5 Nxd5 15. Nd6+ {1-0 (15) Jarmuz,F (1853) -Catania,D (1720) ICCF 2015}) 11... O-O-O 12. Rhe1 Nxe4 13. Bxe4 Qf6 14. Ne5 Nxe5 15. dxe5 Qh6+ 16. Kb1 Qxh2 17. Bxb7+ Kxb7 18. Qe4+ Kb8 19. Rh1 d5 20. exd6 {1-0 (20) Gerber,D-Catania,D (1720) ICCF 2016}) 10. Bxe4 Bxe4 11. Qxe4 Na6 ( 11... c6 12. O-O O-O 13. d5 Re8 14. Rfe1 Na6 15. dxc6 Nc5 16. Qc2 dxc6 17. Rad1 Qc7 18. b4 Nb7 19. Ng5 g6 20. Nxe6 Qe7 21. Qc3 Qf7 22. Ng5 Rxe1+ 23. Rxe1 { Tripp,G (1938)-Catania,D (1720) ICCF 2015 1-0 (28)}) 12. O-O O-O 13. a3 c6 14. Ne5 Nc7 15. f4 Ne8 16. Rf3 Nf6 17. Qc2 Qe8 {Greco,T-Catania,D (1660) ICCF 2018 1/2-1/2 (39)}) 6... f5 (6... Ne7 7. Nc3 O-O 8. f4 d5 9. cxd5 exd5 10. e5 c5 11. Nf3 Nbc6 12. O-O Bc8 13. h3 c4 14. Bc2 Nb4 15. Bb1 Nbc6 16. g4 f5 17. exf6 gxf6 18. Kh1 {Ziegler,P (2301)-Velker,W (2275) ICCF 2018 1-0 (53)}) 7. Nc3 Nf6 (7... fxe4 8. Bxe4 Bxe4 9. Nxe4 Nf6 10. Nc3 O-O 11. Nf3 Nc6 (11... c5 12. dxc5 bxc5 13. O-O Nc6 14. Rfe1 Rb8 15. b3 Qa5 16. Rad1 Rbc8 17. h3 Rfd8 18. Qe3 Rf8 19. Re2 e5 20. Qd3 Rce8 21. Rde1 Nb4 22. Qd2 e4 23. Nxe4 {Duchardt,A (2300) -Blondel,F (1940) ICCF 2016 1-0 (34)}) 12. O-O Ne7 13. Rfe1 a6 (13... c6 14. Ne5 Qc7 15. h3 Rae8 16. Rad1 d6 17. Nf3 Ng6 18. Ng5 Qc8 19. d5 exd5 20. cxd5 Rxe1+ 21. Rxe1 h6 22. Nge4 Nxe4 23. Rxe4 c5 24. Re6 Nf4 25. Rxd6 {Waller,A (2238)-Visser,A (2226) ICCF 2015 1/2-1/2 (38)}) 14. b3 c6 15. Na4 Qc7 16. Qb4 Nc8 17. Rac1 Ng4 18. d5 c5 19. Qd2 {Zlatariu,M (2272)-Cornea,A (2098) ICCF 2016 1-0 (49)}) 8. f3 Nc6 (8... fxe4 9. Nxe4 (9. fxe4 O-O (9... d6 10. Nf3 Nbd7 11. O-O O-O 12. Bc2 e5 13. Rae1 Ng4 14. h3 Nh6 15. dxe5 Nxe5 16. Nxe5 dxe5 17. Rxf8+ Qxf8 18. Rf1 Nf7 19. Qd7 Qc5+ 20. Kh2 Rf8 21. Bb3 {Hoefdraad,G (2194) -Kaczmarek,R (2158) ICCF 2019 1/2-1/2 (30)}) 10. Nf3 Nc6 11. O-O-O e5 12. d5 Nb4 13. Nxe5 Qe7 14. Nf3 Nxd3+ 15. Qxd3 Rae8 16. Rhe1 d6 17. Qd4 Nd7 18. Nb5 Ne5 19. Nxe5 dxe5 20. Qe3 Rd8 {Cofer,D (1970)-Gaujens,A (2256) ICCF 2020 1/2-1/ 2 (52)}) 9... Nxe4 10. fxe4 Bxe4 11. Bxe4 Qh4+ {0-1 (11) Blankenship,J (1814) -Catania,D (1720) ICCF 2017}) (8... O-O 9. exf5 exf5 10. O-O-O g6 11. d5 d6 12. Nge2 Nbd7 13. Nf4 Nc5 14. Bc2 a5 15. h4 Qd7 16. Nb5 Rae8 17. h5 Qg7 18. hxg6 hxg6 19. g4 {1-0 (19) Bhattacharjea,R (1863)-Lobo-van Vliet,G ICCF 2018}) 9. e5 (9. exf5 Nxd4 10. Qe3 c5 11. Nge2 Nxe2 12. Qxe2 (12. Nxe2 Qe7 13. fxe6 Qxe6 14. Qxe6+ dxe6 15. O-O-O Kf7 16. Rde1 Rad8 17. Bc2 g5 18. b3 h6 19. Nc3 Bc6 20. Re3 Rd6 21. Rf1 Rhd8 22. Re2 Rf8 23. Bb1 a6 {Zolochevsky,V (2340)-Romm,M (2445) ICCF 2017 1/2-1/2 (31)}) 12... O-O (12... Qe7 13. fxe6 Qxe6 14. Qxe6+ dxe6 15. O-O-O Rd8 16. Rhe1 Kf7 17. a3 Rd7 18. Kc2 Rhd8 19. b4 cxb4 20. axb4 h6 21. Re2 g5 22. Re5 {1-0 (22) Williamson,D (2365)-Gnilka,T (2350) ICCF 2018}) 13. fxe6 Re8 14. O-O-O Rxe6 15. Qd2 Bc6 (15... Qb8 16. Bc2 Bc6 17. Kb1 Qc7 18. Nd5 Bxd5 19. cxd5 Rd6 20. Qc3 c4 21. g4 Rxd5 22. Rxd5 Nxd5 23. Qd4 Nf4 24. Qe4 Rf8 25. Qxh7+ Kf7 26. h4 Qe5 27. h5 {Standaert,S (2438)-Girard,E (2372) ICCF 2011 1-0 (56)}) 16. Rhf1 Ne8 17. Be4 Nd6 18. Bd5 Bxd5 19. Qxd5 Qf8 20. f4 Nf5 {Dosi,A (2583)-Girard,E (2366) ICCF 2010 1-0 (72)}) 9... Nh5 10. O-O-O Nxd4 11. Qe3 c5 12. Nge2 O-O 13. Nxd4 cxd4 14. Qxd4 Qg5+ 15. Rd2 Nf4 16. Nb5 {Grabner,H (2329) -Podvoysky,E (2394) ICCF 2019 1/2-1/2 (31)} (16. Rg1 Nxd3+ 17. Qxd3 Bc6 18. Qd4 Rfc8 19. Kb1 a6 20. Rc1 Qd8 21. b3 b5 22. cxb5 axb5 23. Rcc2 Qa5 24. Nd1 b4 25. Ne3 Rcb8 26. Rc5 Qa7 27. Nc4 h6 {Fluit,J (2145)-Green,P (2121) ICCF 2019 1/2-1/ 2 (31)})) (4... f5 5. exf5 (5. d5 fxe4 6. Bxe4 Qh4 7. Qe2 Nf6 8. Bf3 Bb4+ 9. Bd2 Bxd2+ 10. Nxd2 O-O 11. dxe6 Nc6 12. Bxc6 Bxc6 13. Ngf3 Qh6 14. O-O Rae8 15. Nd4 Nh5 16. Nxc6 Nf4 {Beck,G (2223)-Girard,E ICCF 2008 0-1 (33)}) (5. Nc3 Nf6 6. f3 Nc6 7. Be3 fxe4 8. fxe4 e5 9. d5 Nd4 10. Nf3 Nxf3+ 11. Qxf3 Bb4 12. O-O O-O 13. Qg3 Qe7 14. Rf5 Bc5 15. Raf1 Bxe3+ 16. Qxe3 Rf7 {Petruzzelli,R (2062) -Sossai,S (2029) ICCF 2013 1/2-1/2 (27)}) 5... Bxg2 (5... Bb4+ 6. Kf1 Nf6 (6... exf5 7. c5 bxc5 8. a3 Ba5 9. Qh5+ g6 10. Qe2+ Qe7 11. dxc5 c6 12. b4 Qxe2+ 13. Nxe2 Bd8 14. Nd2 a5 15. Nc4 Ba6 16. h4 Bxc4 17. Bxc4 axb4 18. h5 {Glanville,C (2053)-Cornea,A (2128) ICCF 2016 0-1 (31)}) 7. c5 (7. Nf3 O-O 8. a3 Bd6 (8... Be7 9. Nc3 c5 10. d5 exd5 11. cxd5 d6 12. Ng5 Bc8 13. Ne6 Bxe6 14. fxe6 a6 15. h4 b5 16. Rh3 Qb6 17. Kg1 c4 18. Be3 Qb7 19. Bb1 b4 20. axb4 {Arnold,E (1969) -Catania,D (1708) ICCF 2018 1-0 (25)}) 9. Nc3 (9. fxe6 dxe6 10. Qe2 Bxf3 11. Qxf3 Nbd7 12. Bg5 e5 13. d5 h6 14. Bh4 Nc5 15. Bc2 e4 16. Qh3 Qe8 17. Nc3 Qe5 18. Re1 Rae8 19. Re2 Nh5 20. Qe3 Nf4 {Ruiz-Jarabo,F (2084)-Romm,M (2251) ICCF 2007 0-1 (44)}) 9... exf5 (9... Qe8 10. Bg5 (10. fxe6 dxe6 11. Be3 (11. Ng5 h6 12. Nge4 Nxe4 13. Nxe4 Qf7 14. Qe2 Bf4 15. Bxf4 Qxf4 16. Ng3 Qxd4 17. f3 Qf6 18. Re1 Re8 19. Nh5 Qf7 20. Qc2 Rd8 21. Bg6 Qf8 22. h4 Nc6 {Lenz,A-Yanushevsky, N (2295) ICCF 2007 1-0 (50)}) 11... Nbd7 12. Ng5 h6 13. Nge4 Nxe4 14. Bxe4 Bxe4 15. Nxe4 Nf6 16. Nxf6+ Rxf6 17. Qe2 e5 18. Re1 Rf7 19. d5 c6 20. Rd1 cxd5 21. Rxd5 Qc6 {Fuß,T-Dessaules,P ICCF 2009 1/2-1/2 (34)}) (10. h4 exf5 (10... Nc6 11. Rh3 h6 12. Nb5 Ne7 13. fxe6 dxe6 14. Qe2 Qf7 15. Ng5 hxg5 16. Nxd6 cxd6 17. hxg5 Ne4 18. f3 d5 19. Kg1 Rad8 20. cxd5 exd5 21. fxe4 dxe4 22. Bxe4 {Alexa,J (2346)-Schwarz,J (2331) ICCF 2016 1-0 (43)}) (10... Qh5 11. d5 exd5 12. cxd5 a5 13. Kg1 Na6 14. Bc2 Nc5 15. Bg5 Rae8 16. Bxf6 gxf6 17. Nd2 Qh6 18. Nc4 Bf4 19. Rh3 Kh8 20. b4 axb4 21. axb4 Na6 22. b5 {Csiba,T (2159)-Gaujens,A (2256) ICCF 2020 1-0 (48)}) 11. c5 Be7 12. h5 Bxf3 13. gxf3 Nc6 14. h6 g6 15. Bc4+ Kh8 16. b4 Rd8 17. Bf4 d6 18. cxb6 cxb6 19. Rc1 Qd7 20. Qd3 d5 21. Bb5 a6 {Schreurs,B (2289)-Pijl,R (2222) ICCF 2019 1-0 (30)}) 10... Qh5 (10... exf5 11. c5 Be7 12. Bxf5 Kh8 13. cxb6 axb6 14. h4 Nd5 15. Qc2 Nxc3 16. bxc3 Bxf3 17. gxf3 Qh5 18. Qe4 Rxa3 19. Rxa3 Bxa3 20. Kg2 Re8 21. Qd3 Bd6 22. Rb1 {Cade,S (2273) -Pichushkin,V (2209) ICCF 2016 1-0 (56)}) 11. d5 exf5 12. Nb5 Ne4 13. Nxd6 Nxd6 14. Be7 Re8 15. Bxd6 cxd6 16. Nd4 Qxd1+ 17. Rxd1 Na6 18. Nxf5 Rab8 19. Nxd6 Rf8 20. f3 Nc5 21. b4 {Downs,R (1825)-Catania,D (1708) ICCF 2018 1-0 (36)}) (9... Qe7 10. b4 c5 11. bxc5 bxc5 12. d5 exd5 13. cxd5 Ba6 14. Bg5 h6 15. Bxf6 Qxf6 16. Bxa6 Nxa6 17. Ne4 Qe7 18. Qa4 Nc7 19. g4 Rab8 20. Re1 Nb5 21. Kg2 {Shadrin, O-Eremin,N (2062) ICCF 2012 1-0 (28)}) 10. Bxf5 Qe8 11. Bc2 (11. Bd3 Bxf3 12. Qxf3 Nc6 13. Ne2 Na5 14. Bg5 Qe6 15. Qh3 Qxh3 16. gxh3 Nh5 17. Kg2 Bf4 18. Bh4 Rae8 19. Rad1 g5 20. Bg3 Nb3 21. Rhe1 Rf7 22. c5 Rfe7 {Doren,D (2238)-Quanzaah, E (2111) ICCF 2013 1/2-1/2 (62)}) 11... Qh5 12. d5 Na6 13. Be3 Rae8 14. h3 Bc5 15. Bxc5 Nxc5 16. Qd4 d6 17. Kg1 c6 18. Rd1 Ncd7 {Hoge,K-Arufe Vázquez,J ICCF 2015 1-0 (41)}) (7. a3 Bd6 (7... Be7 8. Nc3 exf5 9. Bxf5 O-O 10. h4 Qe8 11. Rh3 Qh5 12. Bg5 h6 13. Qd3 Bd6 14. Re1 Nc6 15. Nf3 Rae8 16. Rxe8 Qxe8 17. Bg6 Qd8 18. Nd5 Nxd5 19. Bxd8 {Gross,M (2209)-Davidson,J (2127) ICCF 2018 1-0 (27)}) 8. Nc3 exf5 (8... O-O 9. h4 c5 10. d5 exd5 11. cxd5 Be5 12. Nge2 Qe8 13. Nf4 Qf7 14. h5 h6 15. Ng6 Bxc3 16. bxc3 Re8 17. c4 {Sánchez Carol,J (2156)-Gaujens,A (2256) ICCF 2020}) 9. h4 Nc6 10. Bxf5 Qe7 11. Nf3 O-O-O 12. Nb5 Rde8 13. Rh3 Rhf8 14. Qc2 g6 15. Bd3 Ng4 16. Bg5 Qg7 17. Nxd6+ cxd6 18. d5 Nce5 {Troia,E (2283)-Hausdorf,H (2225) ICCF 2014 1-0 (31)}) (7. Be2 Qe7 8. a3 Bd6 9. fxe6 dxe6 10. Nc3 O-O 11. Bf3 c6 12. Bg5 Nbd7 13. Ne4 e5 14. Ne2 Qe6 15. Bxf6 Nxf6 16. d5 cxd5 17. cxd5 Qe7 18. N2c3 Rad8 {Risdon,A (1880)-Iacomi,S (2089) ICCF 2014 0-1 (48)}) (7. Qb3 c5 8. h4 Qe7 9. a3 Ba5 10. dxc5 O-O 11. Qa4 Qxc5 12. Nf3 Ng4 13. Qc2 Na6 14. Qe2 exf5 15. b4 Qd6 16. Nc3 Nc5 17. Bc2 Rae8 18. Qd1 Qb8 {Kaan,J (2300)-Bendig,F (2309) ICCF 2019 1-0 (47)}) (7. h4 Qe7 8. a3 Bd6 9. Nc3 Nc6 10. Nf3 O-O-O 11. b4 Qf7 12. Nb5 exf5 13. Kg1 Rde8 14. Rh3 h6 15. h5 Ne4 16. d5 Ne5 17. Bxe4 fxe4 18. Nxd6+ cxd6 {Bertorello,J (2169)-Gaujens,A (2270) ICCF 2020 1-0 (29)}) 7... bxc5 8. a3 c4 9. Bxc4 Ba5 (9... Be7 10. fxe6 O-O 11. Nc3 dxe6 (11... d5 12. Bd3 c5 13. Nf3 c4 14. Bf5 Ne4 15. g4 Nd6 16. Bb1 Nc6 17. Kg2 Rxf3 18. Qxf3 Nxd4 19. Qh3 g6 20. Rd1 Nxe6 21. g5 Nc7 22. Kg1 Bxg5 23. Bxg5 {Kurbasov,S (2208)-Eremin,N (2062) ICCF 2012 1/2-1/2 (68)}) 12. Nf3 Qd6 13. Qe2 Bd5 14. g3 Nc6 15. Nxd5 exd5 16. Ba2 Rae8 17. Kg2 Qd7 18. Qd3 Bd8 19. Bf4 Kh8 20. Rhe1 Ne4 21. Re2 {Klausen,T (2476)-Beltins,G (2032) ICCF 2009 1-0 (25)}) 10. Nf3 (10. fxe6 dxe6 11. Bxe6 Qe7 (11... Ba6+ 12. Ne2 Nc6 13. d5 Qd6 14. b4 Bxe2+ 15. Qxe2 Nd4 16. Qc4 Nxe6 17. Nc3 Nxd5 18. Qxd5 Qxd5 19. Nxd5 Bb6 20. g3 Bd4 21. Ra2 Kf7 22. Nf4 Nxf4 23. Bxf4 {Sesko,M (2233)-Mastronardi,D (2062) ICCF 2011 1/2-1/2 (40)}) 12. Bc4 Nc6 13. Nc3 O-O-O 14. Nf3 Nxd4 15. Nxd4 Rhe8 16. Be3 c5 17. Nf5 Rxd1+ 18. Rxd1 Qe5 19. Nd6+ Kb8 20. Nxe8 Nxe8 21. Nd5 Nc7 {Lorin,F (1964)-Girard,E (2277) ICCF 2009 0-1 (49)}) (10. Nh3 Nc6 11. Be3 Qe7 12. fxe6 O-O-O 13. Qa4 Bb6 14. Nd2 dxe6 15. Nb3 Ng4 16. Bg5 Qf7 17. Bxd8 Rxd8 18. Re1 Nxd4 19. Nxd4 Rxd4 20. Qc2 Kb8 21. Bxe6 Qf8 {Thew,B (2060) -Gaujens,A (2256) ICCF 2020 0-1}) 10... O-O 11. fxe6 dxe6 12. Nc3 Qd6 (12... Kh8 13. Ng5 Qd6 14. Qd3 Nbd7 15. b4 Bb6 16. Nb5 (16. Nxe6 Ng4 17. Ra2 Nde5 18. dxe5 Rxf2+ 19. Rxf2 Qxd3+ 20. Bxd3 Nxf2 21. Bc4 Nxh1 22. Na4 h6 23. Nac5 Bc6 24. Kg1 a5 25. b5 Bxc5+ 26. Kxh1 Rb8 27. Nxc5 Bxb5 {Gerbich,V (2402)-Girard,E (2292) ICCF 2009 1-0 (39)}) 16... Qe7 17. Ra2 e5 18. Re2 Rad8 19. f4 a6 20. Nc3 Qd6 21. fxe5 Nxe5 22. Rxe5 Ne4+ 23. Ke1 Nxg5 24. Rxg5 {Bobykin,K-Girard,E (2277) ICCF 2009 1/2-1/2 (39)}) 13. h4 Bxf3 14. Qxf3 Nc6 15. Bf4 Qxd4 16. Bxe6+ Kh8 17. Rd1 {Nenciulescu,S (2284)-Kulagin,S (2295) ICCF 2012 1/2-1/2 (65)}) 6. Qh5+ g6 7. fxg6 Bg7 8. gxh7+ Kf8 9. Ne2 (9. Nf3 Nf6 10. Qh4 Bxh1 11. Ne5 Nc6 12. Bg5 Nb4 13. Bg6 Ke7 14. a3 Na6 15. Nc3 Bb7 16. Be4 c6 17. O-O-O Qe8 18. Rg1 Rf8 19. Bg6 Qb8 20. Ne4 Nc5 {Oliynyk,V (2039)-Christensen,J (2022) ICCF 2012 1-0}) (9. hxg8=Q+ Kxg8 10. Qg4 Bxh1 11. Bg5 Qe8 12. Qg3 Nc6 13. Nc3 e5 14. O-O-O exd4 15. Nd5 Bxd5 16. cxd5 Nb4 17. Bf6 Nxd3+ 18. Rxd3 Qf7 19. Rf3 Rh7 20. Rf5 Kh8 {Simanowski,A (2137)-Jung,B (2200) ICCF 2008 0-1 (36)}) 9... Nf6 10. Qh4 Bxh1 11. Bg5 Nc6 (11... c5 12. Nd2 Na6 (12... cxd4 13. O-O-O Bb7 14. Nf4 Nc6 15. Re1 Nb4 16. Bg6 Ke7 17. a3 Na6 18. Be4 {1-0 (18) Yáñez García,J (2260) -Devine,G (2175) ICCF 2018}) 13. Nf4 cxd4 14. O-O-O Nb4 15. Bg6 Rc8 16. Rxh1 Rc5 17. Nh5 Rxg5 18. Qxg5 Nc6 19. Nxg7 Kxg7 20. Bd3+ Kf7 21. Rg1 Qf8 22. Rg3 Ke7 23. Rf3 {Zaccaria,V (2013)-Lagergren,H (2073) ICCF 2016 1-0 (31)}) (11... Qe7 12. Nf4 Qf7 13. Ng6+ Ke8 14. Ne5 Qf8 15. Nc3 d6 16. Bg6+ Ke7 17. O-O-O dxe5 18. dxe5 Nbd7 19. f4 (19. Qf4 Bc6 20. Ne4 Bxe4 21. exf6+ Bxf6 22. Bxf6+ Qxf6 23. Rxd7+ Kxd7 24. Qxf6 Bxg6 25. Qxg6 Raf8 26. Qg7+ Kc6 27. Kd1 Rd8+ 28. Ke2 e5 29. Kf3 Rhe8 30. b4 e4+ {Gerbich,V (2403)-Kazantsev,R (2301) ICCF 2009 1-0 (48) }) 19... Bc6 20. Ne2 Nc5 21. Nd4 Be8 22. f5 Bxg6 23. fxg6 {Päßler,H (2086) -Cornea,A (2071) ICCF 2019 1-0 (31)}) (11... Kf7 12. Nf4 Nc6 13. Bg6+ Kf8 14. Nd2 Nxd4 15. O-O-O Bf3 16. Ne4 Bxe4 17. Bxe4 Rxh7 18. Bxh7 c5 19. Rxd4 cxd4 20. Nh5 Kf7 21. Nxg7 Qc7 22. Bg6+ Kxg6 23. Qh6+ {Sheppard,B (2267)-Cornea,A (2071) ICCF 2019 1-0 (28)}) (11... Bf3 12. Nf4 Nc6 13. Nd2 Bg4 14. Bxf6 Qxf6 15. Qxg4 Nxd4 16. Ne4 Qh6 17. Ng6+ Kf7 18. h4 Raf8 19. Ng5+ Ke8 20. Qg2 Nc6 21. O-O-O Rf6 22. Nxh8 Bxh8 23. Qg3 {Gupta,A (1946)-De,G (2264) ICCF 2015 1-0 (43)}) ( 11... Bb7 12. Nbc3 Nc6 13. O-O-O Qe7 14. Rg1 Ke8 15. Ne4 {1-0 (15) Young,S (2165)-Jaeger,F (2094) ICCF 2009}) 12. Nd2 Kf7 (12... b5 13. cxb5 Nb4 14. Bg6 a6 (14... Ke7 15. a3 Nbd5 16. O-O-O Qf8 17. Rxh1 Kd8 18. Ne4 Kc8 19. Rg1 Rb8 20. a4 Rb6 21. Nxf6 Bxf6 22. Nc3 a5 23. Nxd5 exd5 24. Bd3 Qg7 25. Rg4 Kb7 26. Bd2 {Antonov,V-Rabinovich,A ICCF 2008 1-0 (31)}) 15. O-O-O axb5 16. Rxh1 Rxa2 17. Nf4 Qa8 18. Rg1 Nbd5 19. Nxd5 Ra1+ 20. Nb1 exd5 21. Bh6 Qc6+ 22. Kd1 Qe6 23. Bxg7+ Kxg7 24. Qg5 {Gilbert,C (2230)-Voveris,G (2146) ICCF 2012 1-0 (27)}) 13. O-O-O (13. Nf4 Ne7 14. Bxf6 Bxf6 15. Qh5+ Kf8 16. O-O-O Qe8 17. Bg6 Nxg6 18. Qh6+ Ke7 19. Nxg6+ Kd6 20. Rxh1 Bxd4 21. Nf3 c5 22. Nxd4 cxd4 23. Qg7 Kc7 24. Rg1 Rxh7 {Boles,R (2094)-Schulz,B (1779) ICCF 2016 1-0 (36)}) 13... Nb4 14. Bb1 Bb7 15. Rg1 Nxa2+ (15... Qf8 16. Nf4 {1-0 (16) Mirkowski,P (2251) -Avchinikov,V ICCF 2014}) 16. Kd1 {Taras,I (2254)-Moisa,L (2298) ICCF 2014 1-0 (33)}) (4... d6 5. Nc3 Nd7 6. Nge2 g6 7. Bc2 Bg7 8. O-O Ne7 9. Bg5 f6 10. Be3 O-O 11. Nf4 e5 12. Ne6 Qc8 13. d5 Ba6 14. Nxf8 Qxf8 15. b3 Bb7 16. Qd2 { Barendswaard,W (2070)-Kappelhof,W (2338) ICCF 2019 1-0 (45)}) 5. Ne2 (5. Nf3 Nb4 6. Nc3 (6. O-O Nxd3 (6... Ne7 7. a3 Nxd3 8. Qxd3 Ng6 9. Bg5 {1/2-1/2 (9) Sesko,M (2237)-Harding,T (2368) ICCF 2011}) 7. Qxd3 Ne7 8. Nc3 Ng6 9. d5 (9. Bg5 Be7 10. Bxe7 Qxe7 11. d5 O-O 12. b3 d6 13. Nd4 e5 14. Nf5 Qf6 15. Qf3 Nh4 16. Qh3 Nxf5 17. exf5 Bc8 18. g4 Qe7 19. Ne4 f6 20. f4 Bb7 {Azamfirei,R-Badger, J (1808) ICCF 2016 1-0 (42)}) 9... Be7 10. Re1 (10. Be3 O-O 11. Rfd1 e5 12. Ne2 d6 13. Ng3 Qd7 14. Nf5 Bf6 15. Rac1 Rfe8 16. b4 Ne7 17. Ng3 Ng6 18. c5 Qa4 19. Qb3 Qxb3 20. axb3 bxc5 21. bxc5 Be7 {Moisa,L-Cabral,R (1931) ICCF 2007 1-0 (53) }) 10... e5 (10... O-O 11. Bd2 h6 12. b3 e5 13. Ne2 a5 14. a3 d6 15. Ng3 Qd7 16. Nf5 Bf6 17. h3 Rfe8 18. Qc2 Ne7 19. Ng3 Ng6 20. Be3 Qe7 21. b4 Nf4 22. c5 { Walters,G (2391)-Bussom,A ICCF 2016 1-0 (57)}) 11. Ne2 O-O 12. Ng3 d6 13. a4 a5 14. b3 Bf6 15. Bd2 Re8 16. Nf5 Ne7 17. Ne3 Bc8 {Bösendorfer,R-Schabata,W (2148) ICCF 2008 0-1 (58)}) 6... Nxd3+ 7. Qxd3 Bb4 8. d5 Ne7 9. a3 Bxc3+ 10. Qxc3 O-O 11. O-O f5 12. dxe6 dxe6 13. Ng5 Qd7 14. Qe5 Rf6 15. Bf4 h6 16. Nh3 Nc6 { Beck,G (2223)-Teyssier,A ICCF 2010 0-1}) 5... Nb4 (5... e5 6. d5 Nb4 7. Nbc3 ( 7. O-O Ne7 8. Nbc3 Nxd3 9. Qxd3 Ng6 10. Ng3 Bc5 11. Nf5 O-O 12. Qg3 d6 13. h4 Bc8 14. Be3 f6 15. h5 Bxf5 16. exf5 Ne7 17. Qh3 Qd7 18. g4 h6 {Gataullin,R (2244)-Shorokhov,S (2300) ICCF 2008 1-0 (31)}) 7... Nxd3+ 8. Qxd3 Nf6 9. O-O ( 9. f4 Bd6 10. Ng3 g6 11. Qf3 O-O 12. f5 Kg7 13. Bg5 h6 14. h4 Ba6 15. b3 Ba3 16. Kd2 Be7 17. Kc2 d6 18. Bd2 Bb7 19. Nf1 Ng8 20. Qf2 Nf6 {Kitaev,S (2356) -Silva,F (2266) ICCF 2018 1-0 (29)}) 9... Bc5 10. Qg3 Qe7 11. a3 O-O 12. b4 Bd6 13. Bh6 Ne8 14. Nb5 Ba6 15. Rac1 f6 16. Bd2 c6 17. Nxd6 {Marcos Nozar,J (2182) -Andersen,J (2224) ICCF 2012 1/2-1/2 (55)}) (5... g6 6. Nbc3 (6. a3 f5 7. O-O Bg7 8. exf5 gxf5 9. Be3 Qh4 10. Nf4 Bxd4 11. Bxd4 Nxd4 12. Qh5+ Qxh5 13. Nxh5 Ne7 14. Nf6+ Kf7 15. Nxd7 Ng6 16. f4 Rad8 17. Ne5+ Nxe5 {Nilssen,T (1574) -Løvås,R (1680) ICCF 2017 0-1}) (6. Nd2 Bg7 7. Nf3 Nb4 8. Bb1 f5 9. Ng3 Ne7 10. O-O fxe4 11. Bxe4 d5 12. cxd5 exd5 13. Qa4+ Nbc6 14. Bd3 O-O 15. Be3 Na5 16. Rfe1 Nec6 17. Rac1 Qd6 {Hild,H (2380)-Baroin,B (2215) ICCF 2019 1-0 (62)}) 6... Bg7 (6... Nh6 7. O-O Bg7 8. Be3 Ng4 9. Bd2 f5 10. exf5 gxf5 11. h3 Nf6 12. Re1 O-O 13. d5 Ne5 14. Nf4 Nxd3 15. Nxd3 Qe7 16. Bf4 c6 17. dxe6 dxe6 18. c5 { Nemtsev,S (2370)-Pavlov,A (2329) ICCF 2014 1-0 (42)}) 7. Be3 (7. Bc2 Nge7 8. O-O O-O 9. Bg5 f6 10. Bf4 f5 11. e5 Ba6 12. Nb5 Na5 13. b3 Bxb5 14. cxb5 c5 15. Nc3 a6 16. a4 cxd4 17. Qxd4 axb5 18. axb5 Qc7 {Palladino,M (2219)-Zdziech,M (2151) ICCF 2020 1/2-1/2 (27)}) 7... Nge7 8. O-O (8. h4 d5 9. cxd5 exd5 10. e5 Qd7 11. h5 O-O-O 12. Qa4 Bxe5 13. dxe5 d4 14. Nxd4 Nxd4 15. Qxd7+ Rxd7 16. hxg6 Nxg6 17. O-O-O Ne6 18. f3 h5 19. Bf5 Rxd1+ {Ellis,J (2078)-Bussom,A ICCF 2017 1/2-1/2 (56)}) 8... O-O 9. Qd2 d5 10. cxd5 exd5 11. e5 f6 12. f4 Nb4 13. Bb1 fxe5 14. dxe5 c5 15. a3 Na6 16. Bf2 {1/2-1/2 (16) Celsus,P (2010)-Schulz,B (1929) ICCF 2019}) (5... Nge7 6. Nbc3 g6 7. h4 Bg7 8. d5 Ne5 9. h5 d6 10. Nd4 Nxd3+ 11. Qxd3 c5 12. Nf3 exd5 13. exd5 h6 14. O-O O-O 15. Bd2 gxh5 16. Rae1 Bc8 17. Nh4 {Chaika,L (2340)-Dreisch,J (1996) ICCF 2017 1-0 (61)}) 6. Nbc3 (6. O-O Ne7 7. Nbc3 Nxd3 8. Qxd3 d6 (8... g6 9. d5 (9. Bg5 Bg7 10. Rad1 (10. f4 f6 11. Bh4 d5 12. cxd5 exd5 13. Ng3 dxe4 14. Ngxe4 O-O 15. Rad1 c6 16. Qc4+ Kh8 17. Rf3 Qd7 18. Bf2 Rad8 19. Qa4 c5 20. Qxd7 Rxd7 21. Rfd3 c4 {Tolhurst, P-Thompson,E (1896) ICCF 2011 0-1 (32)}) 10... d6 11. d5 h6 12. Be3 Qd7 13. Qd2 O-O-O 14. a4 g5 15. Nd4 e5 16. Ndb5 a6 17. a5 bxa5 18. Na7+ Kb8 19. Qc2 Nc8 20. Nxc8 Qxc8 {Rogemont,A (2253)-Deneuville,C (2210) ICCF 2010 1-0}) 9... Bg7 10. Qh3 exd5 (10... O-O 11. Bh6 Ba6 12. b3 Bxh6 13. Qxh6 exd5 14. exd5 Nf5 15. Qf4 Nd6 16. Nd4 f5 17. a4 Re8 18. f3 Qe7 19. a5 Qe3+ 20. Qxe3 Rxe3 21. Rfc1 bxa5 22. Rxa5 {De Carlos Arregui,I (2334)-Sánchez Riera,X (2282) ICCF 2013 1-0 (62)} ) 11. cxd5 O-O 12. Bh6 Bxh6 13. Qxh6 f6 14. Rac1 Ba6 15. Rfd1 Nc8 16. Nf4 Qe8 17. d6 c6 18. Nh3 Qe6 19. Rd2 Nxd6 20. Nf4 {Souto,A (2183)-Rosenbaum,D ICCF 2012 1-0 (47)}) (8... d5 9. exd5 exd5 10. Re1 dxc4 11. Qxc4 Qd7 12. Bf4 O-O-O 13. Qxf7 Ng6 14. Qxd7+ Rxd7 15. Bg3 Bd6 16. Rac1 Bxg3 17. hxg3 h5 18. Nb5 Kb8 19. Rc3 h4 20. Re3 {Ludgate,A (2494)-González Freixas,A (2530) ICCF 2007 1-0 (40)}) (8... Ng6 9. f4 f5 10. exf5 Nh4 11. fxe6 dxe6 12. f5 Nxf5 13. g4 Nh4 14. d5 Ng6 15. Nd4 Bc5 16. b4 Bxd4+ 17. Qxd4 Rf8 18. Bf4 Qe7 19. dxe6 Rd8 20. Qe3 { Wolf,M (1905)-Schulz,B (1929) ICCF 2019 1/2-1/2}) (8... Nc6 9. Qg3 d6 10. Bg5 f6 11. Be3 Qd7 12. d5 Ne7 13. Nf4 exd5 14. exd5 c6 15. Rfe1 cxd5 16. cxd5 Rc8 17. a4 Kf7 18. a5 g5 19. Nh5 Qf5 20. axb6 {Fremmegaard,J (1585)-Stevens,S ICCF 2016 1-0 (27)}) 9. d5 (9. a4 g6 10. a5 (10. d5 Bg7 11. Bg5 O-O 12. Qh3 Bc8 13. Qh4 f6 14. Bh6 Bxh6 15. Qxh6 e5 16. Qd2 a5 17. f4 Bd7 18. Rf3 Bg4 19. Rf2 Bxe2 20. Nxe2 Qd7 21. b3 Rf7 {LePage,C (2420)-Gaujens,A (2272) ICCF 2014 1-0 (41)}) 10... Bg7 11. a6 Bc8 12. b4 O-O 13. b5 f5 14. Bg5 h6 15. Bxe7 Qxe7 16. exf5 gxf5 17. Nf4 Qf7 18. Rad1 Bd7 19. h4 Rad8 20. Rfe1 e5 {Fagerström,M (2212) -Gaujens,A (2250) ICCF 2016 1/2-1/2 (45)}) (9. Be3 Qd7 (9... g6 10. d5 Bg7 11. Qd2 O-O 12. Bh6 e5 13. Bxg7 Kxg7 14. f4 f6 15. Rf3 Rf7 16. a4 a5 17. Raf1 Qd7 18. Nc1 Raf8 19. Nd3 Ng8 20. b3 Bc8 21. h3 {Borodin,S (2027)-Gaujens,A (2265) ICCF 2013 1-0 (63)}) 10. Rad1 (10. d5 Ng6 11. f4 Be7 12. Ng3 O-O 13. a4 a5 14. f5 Ne5 15. Qe2 Bh4 16. Nh5 exd5 17. exd5 f6 18. b3 Bc8 19. Ne4 Qe8 20. g3 Bg5 21. Bxg5 fxg5 {Kuitert,C (2156)-Kappelhof,W (2299) ICCF 2018 1-0 (47)}) 10... g6 (10... d5 11. cxd5 exd5 12. e5 O-O-O 13. Rc1 Kb8 14. b4 Qf5 15. Qd1 h5 16. h3 h4 17. b5 f6 18. f4 Qd7 19. Qd3 Nf5 20. Bd2 Ba3 21. Rb1 g6 22. Nd1 { Schulenberg,H (2209)-Kappelhof,W (2179) ICCF 2015 1/2-1/2 (28)}) 11. d5 Bg7 12. Qd2 O-O 13. Bh6 Bxh6 14. Qxh6 e5 15. f4 f5 16. Qg5 Rae8 17. Rf2 Rf7 18. Rdf1 Ref8 19. fxe5 dxe5 20. Nc1 c6 {Luppi,S-Fabig,H (2255) ICCF 2011 1-0 (37)}) (9. Bg5 Qd7 10. f3 Ng6 11. a4 h6 12. Be3 Be7 13. f4 f5 14. d5 exd5 15. Nxd5 O-O 16. Nd4 fxe4 17. Qxe4 c6 18. Qxg6 cxd5 19. Ne6 Bf6 20. Nxf8 Rxf8 {Berggren, M-Gaujens,A (2118) ICCF 2010 1-0 (45)}) (9. f4 g6 10. f5 exf5 (10... gxf5 11. Bg5 Qd7 12. Ng3 Rg8 13. Nh5 Bg7 14. exf5 Nxf5 15. Rxf5 exf5 16. Re1+ Kf8 17. Be7+ Ke8 18. Nb5 Be4 19. Bf6 Bf8 20. Rxe4+ {1-0 (20) Harman,K (1610)-Picken,R (1856) ICCF 2016}) 11. Bg5 fxe4 12. Nxe4 Bxe4 13. Qxe4 f5 14. Qf3 Bg7 15. Nf4 Kf7 16. Rae1 Bf6 17. Bxf6 Kxf6 18. d5 Qd7 19. Qc3+ Kf7 20. Re3 Rhg8 {Salzmann, S (2275)-Petit,J ICCF 2015 1-0}) 9... Qd7 10. f4 (10. a4 Ng6 (10... a5 11. Nb5 Ng6 12. Qc3 e5 13. Ng3 h5 14. Nf5 f6 15. Bd2 Ne7 16. Ne3 Ng6 17. Rfe1 h4 18. h3 Kf7 19. Ra3 Nf4 20. Ng4 g5 21. Ne3 Bc8 22. b4 {Armani,G (2345)-Gaujens,A (2237) ICCF 2017 1/2-1/2 (84)}) 11. a5 (11. f4 Be7 (11... a5 12. b3 Be7 13. Ra2 h5 14. Nb5 e5 15. fxe5 dxe5 16. Ng3 c6 17. Nc3 Bc5+ 18. Kh1 Ne7 19. Qf3 O-O-O 20. Qxf7 h4 21. Nge2 h3 22. Ng1 Bd4 23. Bg5 {Reinhart,K (2463)-Kuiper,J (2500) ICCF 2012 1/2-1/2 (48)}) 12. b3 e5 (12... Bf6 13. Ra2 O-O 14. f5 Ne5 15. Qg3 Qd8 16. Nf4 Bh4 17. Qh3 Bc8 18. Rc2 Bg5 19. Rcf2 exf5 20. exf5 Qe7 21. Ne4 Bxf4 22. Rxf4 f6 23. Bb2 Bd7 24. Rh4 {Petrov,M (2454)-Gaujens,A (2252) ICCF 2018 1-0 (51)}) 13. f5 Nf8 14. Ng3 h5 15. Qf3 h4 16. Nh5 Rg8 17. a5 Nh7 18. b4 Qd8 19. h3 Ba6 20. Qg4 Kf8 21. Qe2 Bg5 22. Bxg5 Nxg5 {Soh,E (2433)-Gaujens,A (2252) ICCF 2018 1-0 (37)}) 11... Be7 (11... bxa5 12. f4 Be7 13. Rxa5 O-O 14. b4 a6 15. Be3 Rab8 16. Rb1 Rbd8 17. Rd1 Rb8 18. h3 Bc8 19. Qb1 c5 20. dxe6 fxe6 21. b5 axb5 22. cxb5 Qe8 23. Qa2 {Schultheiss,K (2320)-Alf,H (2327) ICCF 2015 1-0 (45)}) 12. a6 Bc8 13. f4 O-O 14. b4 Bf6 15. Ra2 Qe7 16. b5 Re8 17. Ng3 e5 18. f5 Nf4 19. Qf3 Kh8 20. Nh1 g6 21. Nf2 Bg5 {Chernov,V-Gaujens,A (2222) ICCF 2011 1-0 (54)}) (10. b3 g6 11. Qd4 e5 12. Qd3 f5 13. f4 Bg7 14. fxe5 dxe5 15. Ba3 c5 16. b4 cxb4 17. Bxb4 O-O 18. exf5 gxf5 19. Rad1 e4 20. Qe3 Rac8 21. Nb5 Ba6 {Zajsek,F (2197)-Benedetto,D (2125) ICCF 2016 1-0 (39)}) 10... Ng6 (10... g6 11. Be3 (11. Nd4 O-O-O 12. a4 Bg7 13. a5 exd5 (13... Bxd4+ 14. Qxd4 f5 15. axb6 axb6 16. Bd2 fxe4 17. Qxe4 exd5 18. cxd5 Rhe8 19. Qc4 Qf5 20. Rfc1 Bxd5 21. Nxd5 Nxd5 22. Qc6 {1-0 (22) Schoch,T (2323)-Petit,J ICCF 2015}) 14. a6 Ba8 15. exd5 Nf5 16. Be3 Nxe3 17. Qxe3 c6 18. Qd3 cxd5 19. cxd5 Kb8 20. Ndb5 Rc8 21. h3 Rhe8 22. Na4 Bf6 {Troia,E (2283)-Gaujens,A (2207) ICCF 2014 1-0 (42)}) 11... Bg7 12. Nd4 (12. Bd4 O-O 13. Bxg7 Kxg7 14. Nd4 e5 15. Nc2 {1-0 (15) Akdag,M-Ball,L (2206) ICCF 2005}) 12... O-O-O (12... exd5 13. exd5 c5 14. dxc6 Nxc6 15. Nxc6 Bxc6 16. Bd4 O-O 17. Bxg7 Kxg7 18. f5 Rfe8 19. Rad1 Rad8 20. Qd4+ Kg8 21. Rd3 Re5 22. Qh4 Rde8 23. Rh3 h5 24. Qf6 {Benes,J (2018)-Kratochvíl,J (2151) ICCF 2015 1/2-1/2 (33)}) 13. a4 exd5 14. exd5 a5 15. Ncb5 Rde8 (15... Kb8 16. Rab1 Rhe8 17. Qd2 Bxd4 18. Bxd4 Nf5 19. b4 axb4 20. Qxb4 c5 21. dxc6 Qxc6 22. Rf2 Nxd4 23. Nxd4 Qc5 24. Qxb6 Re1+ 25. Rf1 Rxf1+ 26. Kxf1 Rd7 27. Qxc5 {Gerbich,V (2438)-Gaujens,A (2132) ICCF 2011 1-0 (50)}) 16. b4 Nf5 17. Bf2 Nxd4 18. Nxd4 axb4 19. a5 bxa5 20. Rxa5 Qg4 21. Rb5 g5 22. Nc6 {Jenkinson,S (1983)-Knöppel,B (2099) ICCF 2005 1-0}) 11. b3 (11. dxe6 fxe6 12. Qh3 O-O-O 13. Be3 Kb8 14. Rad1 e5 15. f5 Ne7 16. a4 g6 17. a5 gxf5 18. exf5 h5 19. Ng3 Bh6 20. Bxh6 Rxh6 21. Nge4 Rf8 22. Qe3 Rh7 {Deforel,J (2059)-Gaujens,A (2237) ICCF 2017 1/2-1/2 (53)}) (11. Qc2 Be7 12. f5 exf5 13. exf5 Ne5 14. b3 O-O 15. Bb2 c6 16. Rad1 Rfe8 17. f6 Bxf6 18. Rxf6 gxf6 19. Ng3 Qg4 20. Nce4 Qg6 21. Rf1 cxd5 22. cxd5 Ng4 {Santos,M (2436)-Gaujens,A (2250) ICCF 2016 1-0 (68)}) 11... Be7 12. Bb2 (12. Bd2 O-O 13. f5 Ne5 14. Qg3 {Arounopoulos,S (2303)-Gaujens,A (2276) ICCF 2021} Kh8 15. Nf4 (15. Bg5 Bxg5 16. Qxg5 exf5 17. exf5 Qd8 (17... f6 18. Qd2 c6 19. dxc6 Qxc6 20. Nd4 Qc5 21. Kh1 Rf7 22. Ne6 Qc6 23. Rad1 Rd7 24. h3 Re8 25. a4 a6 {Neu,A (1490)-Gluckman,T ICCF 2014 (25)}) 18. Qf4 Nd7 19. Rae1 Re8 20. Ne4 b5 21. Nd4 bxc4 22. bxc4 Nf6 23. Nxf6 Qxf6 24. Nb5 Re7 25. Qf2 c6 26. Rxe7 Qxe7 {Tylecek,D (2205)-Gaujens,A (2265) ICCF 2019 1/2-1/2 (46)}) 15... exf5 16. exf5 Rae8 17. Rae1 Rg8 18. Qh3 Bc8 19. Nfe2 Bd8 20. Nd4 c5 21. Nde2 a6 22. a4 Qc7 23. Kh1 g6 24. Ng3 f6 25. Nce4 Ref8 26. Qh6 {Lefebvre,A (2352) -Gaujens,A (2264) ICCF 2017 1-0 (34)}) 12... e5 13. f5 Nf8 14. a4 (14. Qf3 h5 15. Ng3 h4 (15... O-O-O 16. Nxh5 Nh7 17. Qd3 Ng5 18. Ng3 Rh4 19. Nd1 Rdh8 20. h3 g6 21. Nf2 Kb8 22. Bc1 Qd8 23. fxg6 fxg6 24. b4 Bc8 25. a4 Nxh3+ 26. gxh3 Bxh3 27. Re1 {Vugt,W (2231)-Gaujens,A (2250) ICCF 2016 1-0 (43)}) 16. Nh5 Rh7 17. f6 Bxf6 18. Nxf6+ gxf6 19. Qxf6 Qe7 20. Qf3 O-O-O 21. a4 a5 22. Nb5 Rg7 23. Ra2 Ng6 24. Bc1 Rdg8 25. Bh6 Rh7 {Telepnev,I (2519)-Gaujens,A (2225) ICCF 2015 1/2-1/2 (51)}) 14... h5 15. a5 Nh7 16. a6 Bc8 17. Qf3 h4 {Leemans,R (2378) -Gaujens,A (2252) ICCF 2018 1/2-1/2 (47)}) 6... Nxd3+ 7. Qxd3 Bb4 (7... d6 8. O-O (8. d5 Qd7 9. f4 Be7 10. a4 Nf6 11. a5 a6 12. axb6 cxb6 13. e5 Ng4 14. h3 Nh6 15. O-O O-O 16. Nd4 Rad8 17. Be3 exd5 18. cxd5 dxe5 19. fxe5 Bxd5 {Weber,K (2226)-Mastronardi,D (2062) ICCF 2011 1-0 (37)}) 8... g6 (8... Nf6 9. d5 Be7 10. Nd4 Qd7 11. Qg3 (11. b3 O-O 12. Qg3 c5 13. dxc6 Bxc6 14. Bh6 Ne8 15. Rfd1 Bf6 16. Be3 Qb7 17. f3 Be5 18. Qf2 d5 19. exd5 exd5 20. cxd5 Bxd5 21. Rac1 Rc8 22. Qd2 Nf6 {Glaser,K (2301)-Tedesco,M (2298) ICCF 2019 1/2-1/2 (35)}) (11. a4 O-O 12. a5 bxa5 13. Rd1 c6 14. dxe6 fxe6 15. Qh3 Bc8 16. e5 dxe5 17. Nf5 Qxd1+ 18. Nxd1 exf5 19. Rxa5 Bd6 20. c5 Bc7 21. Qb3+ Nd5 22. Ra1 Rb8 {Radhey Derling, D (2021)-Dam,J (2027) ICCF 2019 1-0 (37)}) 11... g6 12. Bh6 e5 13. Nde2 O-O-O 14. Qd3 Ng4 15. Bd2 f5 16. a4 Nf6 17. a5 Nxe4 18. Nxe4 fxe4 19. Qb3 Kb8 20. axb6 {Beltins,G (2055)-Schulz,B (1771) ICCF 2017 1-0 (26)}) 9. f4 Nf6 10. d5 Be7 11. Nd4 Qd7 12. Bd2 c5 13. Nf3 a6 14. a4 Nh5 15. dxe6 fxe6 16. f5 gxf5 17. exf5 e5 18. Nd5 Rg8 19. Nxb6 {Toth,B (2628)-Oosterom,J (2732) ICCF 2009 1-0 (36)}) (7... g6 8. O-O (8. h4 Bg7 (8... h5 9. Bg5 Be7 10. Qg3 d6 11. f3 Nf6 12. b3 Nd7 13. O-O-O a6 14. Kb2 Bxg5 15. hxg5 Qe7 16. Nf4 O-O-O 17. Rd2 e5 18. Nfd5 Bxd5 19. Nxd5 Qe6 20. Qf2 {Drescher,A (1945)-Blittkowsky,R (1975) ICCF 2020 0-1 (45)}) 9. h5 d6 10. d5 exd5 11. cxd5 Qd7 12. Nd4 Nf6 13. h6 Bf8 14. Bg5 Be7 15. Nc6 Bxc6 16. dxc6 Qg4 17. f4 Nh5 18. Bxe7 Kxe7 19. Nd5+ Kd8 {Macayo,R (2403)-Azzi,R (1870) ICCF 2012 1-0 (26)}) 8... Bg7 9. d5 (9. Bf4 d6 10. Rad1 Nf6 11. f3 Nh5 12. Be3 O-O 13. d5 e5 14. g4 Nf6 15. Qd2 a6 16. Kg2 h5 17. h3 Bc8 18. Rh1 Kh8 19. Bg5 Qe8 20. Rhg1 {1/2-1/2 (20) Zemlyanov,S (2359)-Glukhov, A (2375) ICCF 2014}) 9... d6 (9... Nf6 10. f3 (10. h3 O-O 11. Bg5 h6 12. Bh4 g5 13. Bg3 Nh5 14. Rad1 e5 15. d6 c5 16. Nd5 Bxd5 17. Qxd5 Nf4 18. Qd2 Nxe2+ 19. Qxe2 Qf6 20. Rd5 Rfe8 21. Rfd1 Rac8 {Rolón,M (2206)-Tripp,G (2226) ICCF 2021}) 10... O-O 11. Bg5 h6 12. Bh4 d6 13. Rad1 e5 14. h3 g5 15. Bf2 Nh5 16. Be3 Bc8 17. Qd2 Kh8 18. Kh2 a6 19. a4 Qf6 20. Qc2 Bd7 21. b3 {Beekes,A (1896)-Gaujens, A (2265) ICCF 2019 1/2-1/2 (27)}) 10. f4 Ne7 11. Be3 O-O 12. Nd4 exd5 13. cxd5 Bxd4 14. Bxd4 f5 15. b4 c5 16. dxc6 Nxc6 17. Nd5 Nxd4 18. Qxd4 fxe4 19. Rad1 { Taras,I (2334)-Vecek,M (2320) ICCF 2016 1/2-1/2 (32)}) (7... Ne7 8. Be3 (8. d5 Ng6 9. b3 Qh4 10. Qc2 c6 11. O-O Bd6 12. g3 Qh3 13. Nd4 Nh4 14. f4 e5 15. fxe5 Bxe5 16. Nf5 Nxf5 17. Rxf5 Bd4+ 18. Kh1 cxd5 19. cxd5 O-O {Benes,J (2121) -Davidson,J (2125) ICCF 2014 0-1 (55)}) 8... g6 9. b4 Bg7 10. O-O O-O 11. f3 Nc6 12. a3 Qe7 13. Qd2 f5 14. Rad1 d6 15. Bg5 Qd7 16. Bh6 Bxh6 17. Qxh6 e5 18. exf5 Rxf5 19. d5 {Krygier,I (2196)-Beltins,G (2083) ICCF 2008 1-0 (42)}) 8. O-O (8. d5 Ne7 9. a3 Bxc3+ 10. Qxc3 O-O 11. O-O f5 12. Nf4 Qe8 13. dxe6 fxe4 14. Rd1 d6 15. Qh3 Rf6 16. Be3 Qf8 17. Qg4 Rf5 18. Nh5 Ng6 19. Ng3 Rf6 {Garus,E (2118)-Whittaker,I (2107) ICCF 2019 1/2-1/2 (25)}) 8... Ne7 9. Na4 (9. Nd1 Ng6 (9... f5 10. f3 fxe4 11. fxe4 Ng6 12. Ndc3 Qh4 13. Be3 O-O-O 14. c5 Rhf8 15. Bf2 Qg5 16. Be3 Qh4 17. Bf2 Qg4 18. h3 Qg5 19. Be3 Qh4 20. Bf2 Qg5 21. Be3 { Kukula,P (2149)-Pietrzak,J (2307) ICCF 2011 1/2-1/2}) 10. f4 f5 11. exf5 exf5 12. Ng3 (12. c5 bxc5 13. a3 c4 14. Qxf5 Bd6 15. Qb5 Rb8 16. Qxc4 Qf6 17. Ne3 Qf7 18. f5 Ne7 19. Nc3 O-O 20. f6 gxf6 21. Rxf6 Qxc4 22. Rxf8+ Rxf8 23. Nxc4 Ba6 {Muzyka,Y (2390)-Gaujens,A (2322) ICCF 2008 1/2-1/2 (54)}) 12... Qf6 13. a3 Be7 14. Ne3 O-O 15. Ngxf5 Rae8 (15... d5 16. Bd2 Ba6 17. Rae1 (17. b3 Rad8 18. Bc3 Qf7 19. g3 Bf6 20. a4 c5 21. a5 dxc4 22. bxc4 cxd4 23. Nxd4 Bb7 24. axb6 axb6 25. Ra7 Rd7 26. Rxb7 Rxb7 27. f5 Ne5 28. Qe4 Nxc4 {Brandberg,J (2249) -Gaujens,A (2223) ICCF 2013 1/2-1/2 (32)}) 17... dxc4 18. Qe4 Rae8 19. Bc3 Bd6 20. Qd5+ Qf7 21. Nxd6 cxd6 22. g3 Qxd5 23. Nxd5 Bc8 24. Nc7 Re7 25. Nb5 Bh3 26. Rxe7 Nxe7 27. Re1 {Andersen,R (2237)-Gaujens,A (2272) ICCF 2014 1/2-1/2 (57)}) 16. Bd2 Bd6 17. Nxd6 Qxd6 18. c5 Qc6 19. Qc4+ d5 20. cxd6+ Qxc4 {Caliò,M (1935) -Gaujens,A (2229) ICCF 2012 1/2-1/2 (33)}) (9. a3 Bxc3 10. Nxc3 O-O 11. d5 (11. Re1 f5 12. Bg5 fxe4 13. Nxe4 h6 14. Bh4 Rf4 15. Bg3 Rf7 16. Rad1 Nf5 17. d5 exd5 18. cxd5 d6 19. f3 Qd7 20. Bf2 Re8 21. Qc4 Ne7 22. Nc3 Ng6 {Peters,A (2337)-Deneuville,C (2304) ICCF 2009 1/2-1/2 (29)}) (11. f3 Ng6 12. Be3 f5 13. Rad1 (13. exf5 Rxf5 14. Rae1 Qh4 15. Rf2 Raf8 16. Bd2 Rh5 17. g3 Qh3 18. Ne4 Rhf5 19. Re3 h6 20. a4 d5 21. cxd5 Rxd5 22. Nc3 Rdf5 23. a5 Ne7 24. a6 Ba8 { Jacobs,R (2350)-Gaujens,A (2222) ICCF 2011 1/2-1/2 (41)}) 13... d6 14. b3 a5 15. d5 f4 16. Bf2 e5 17. Nb5 a4 18. b4 Nh8 19. Nc3 g5 20. Rc1 Bc8 21. Qe2 h5 22. Kh1 g4 {Vetter,G (2320)-Gaujens,A (2272) ICCF 2014 0-1 (38)}) 11... d6 12. f4 Ng6 13. Bd2 Qd7 14. dxe6 fxe6 15. Rad1 a5 16. b3 Rf7 17. Rf2 Nf8 18. Be3 Qe8 19. h3 Nd7 20. Qc2 Re7 {Shchemelev,P (2258)-Gaujens,A (2232) ICCF 2015 1/2-1/2 (51)}) (9. Bf4 Ng6 10. Bg3 O-O (10... Bxc3 11. Nxc3 O-O 12. b4 {1/2-1/2 (12) Ledford,S (2311)-Tripp,G (2226) ICCF 2021}) 11. Nb5 a6 12. Bxc7 Qc8 13. Bd6 axb5 14. Bxb4 bxc4 15. Qe3 Re8 16. a3 d5 17. e5 Qd8 18. g4 Qh4 19. Qg3 Ba6 20. Rae1 h5 {Weber,J (2559)-Gaujens,A (2252) ICCF 2018 1/2-1/2 (54)}) 9... Ng6 10. c5 Bc6 11. Qc2 (11. Qd1 Bxe4 12. a3 b5 13. axb4 bxa4 14. Nc3 Bb7 15. d5 O-O 16. c6 dxc6 17. dxe6 fxe6 18. Qe2 Qc8 19. Qg4 c5 20. Rxa4 cxb4 21. Rxb4 c5 22. Ra4 Rf5 {Hughes,G (2112)-Gaujens,A (2237) ICCF 2017 1/2-1/2 (46)}) 11... f5 12. exf5 (12. Qb3 Qh4 13. exf5 Qe4 14. f3 Qxe2 15. fxg6 Bd2 16. Bxd2 Qxd2 17. Rad1 Qg5 18. Nc3 hxg6 19. Ne4 Qf4 20. h3 O-O 21. Rfe1 Rf5 22. Qe3 g5 23. Qc3 Raf8 { Sadler,C (2304)-Gaujens,A (2232) ICCF 2015 1/2-1/2 (36)}) 12... Nh4 13. f3 Nxf5 14. a3 b5 15. axb4 (15. d5 Bxd5 16. Nf4 O-O 17. axb4 bxa4 18. Nxd5 exd5 19. Rxa4 c6 20. b5 Rb8 21. bxc6 dxc6 22. Rf4 g6 23. Qc3 Re8 24. b4 Qe7 25. Bd2 Qe5 {1/2-1/2 (25) Nývlt,Z (2429)-Gaujens,A (2250) ICCF 2016}) 15... bxa4 16. Bf4 ( 16. d5 Bxd5 17. Rxa4 O-O 18. b5 d6 19. Nf4 Rb8 20. Nxd5 exd5 21. Rd1 Rxb5 22. Rxd5 Rxc5 23. Rxc5 dxc5 24. Qc4+ Rf7 25. Kf2 Qd1 26. Rxa7 h6 27. Ra1 Nd6 { Gilbert,C (2230)-Gaujens,A (2232) ICCF 2012 1/2-1/2 (29)}) (16. Rd1 O-O 17. Nc3 a6 18. d5 exd5 19. Nxd5 Qh4 20. g3 Qh5 21. g4 Qh4 22. Bf4 Rae8 23. gxf5 Qh5 24. Qc4 Kh8 25. f6 Rxf6 26. Nxf6 Qxf3 27. Nd5 {1/2-1/2 (27) Mesko,J (2365)-Gaujens, A (2223) ICCF 2012} (27. Qf1 Qh1+ {1/2-1/2 (27) Sardella,A (2208)-Troia,M (2142) ICCF 2016})) 16... O-O 17. Qd2 Rb8 18. d5 Bxd5 19. Rxa4 Rb7 20. Be5 d6 21. Bc3 Bc6 22. Ra5 e5 23. Ng3 Nxg3 24. hxg3 Re8 25. Re1 Qd7 26. f4 e4 27. Qd4 dxc5 28. Qxc5 Re7 29. Be5 Rb5 30. Qc4+ Qd5 31. Qxd5+ Rxd5 32. Ra6 Bb7 33. Rxa7 Rb5 34. Bc3 h5 35. Kf2 Kf7 36. Ke3 g6 37. Rd1 Ke8 38. Rh1 Rd7 39. Rh4 Rd3+ 40. Kf2 Rd6 41. g4 hxg4 42. Rxg4 Kd7 43. Ra5 Rbd5 44. Rc5 Bc6 45. Ke2 Bb5+ 46. Ke3 Bc6 47. Rxd5 Bxd5 48. Be5 Re6 49. Rg5 Bb7 50. g4 Kd8 51. b5 Rb6 {1-0 (51) Rognes,Ø (2222)-Gaujens,A (2377) ICCF 2008} *