[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "1 d4 d6: Tartakower System"] [Black "and Modern Defence"] [Result "*"] [ECO "A41/01"] [Annotator "Iccf GM Matjaz Pirs,3700X"] [PlyCount "37"] {[%evp 0,37,19,31,54,15,12,38,31,42,56,34,101,51,95,74,101,86,71,74,70,63,55, 49,42,50,39,44,33,33,33,2,0,-17,-17,0,0,0,0,0]} 1. d4 (1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. c4 Bg4 (4... e5 5. dxe5 dxe5 6. Qxd8+ Kxd8 7. Nc3 f6 8. Be2 Be6 9. b4 Nd7 10. O-O Nh6 11. Rd1 Nf7 12. Ba3 Kc8 13. c5 Bf8 14. Na4 Nb6 15. Nc3 Nd7 16. Na4 Nb6 17. Nc3 {1/2-1/2 (17) Kolanek,R (2230)-Brotherton,T (2172) ICCF 2017 1 d4 d6: Tartakower System-and Modern Defence}) (4... e6 5. Be2 Ne7 6. Qa4+ Qd7 7. Qxd7+ Bxd7 8. O-O O-O 9. Rd1 Nbc6 10. Nc3 a5 11. Bf4 Nd8 12. e5 dxe5 13. Bxe5 Bxe5 14. Nxe5 Bc6 15. Nxc6 Nexc6 16. Rd2 {Kalinaj,J (1813)-Klein,J (1550) ICCF 2013 1-0 (36)}) 5. Be2 (5. Nc3 Bxf3 6. gxf3 Nc6 7. Be3 Qd7 8. f4 e6 9. f3 Nce7 10. Qb3 b6 11. Qa3 Nf6 12. e5 Nh5 13. Ne4 Nf5 14. exd6 Nxd4 15. Bxd4 Bxd4 16. dxc7 Qxc7 {Ziman,S (1660)-Klein,J (1550) ICCF 2013 0-1 (46)}) (5. Be3 Bxf3 6. Qxf3 c5 7. Nc3 cxd4 8. O-O-O dxc3 9. Bd4 cxb2+ 10. Bxb2 Bxb2+ 11. Kxb2 Qb6+ 12. Qb3 Qxf2+ 13. Kb1 Nd7 14. Qc3 Ngf6 15. Rd2 Qe1+ 16. Kb2 O-O {Fariñas Lucas, J (1670)-Carrillo Carrillo,M (1749) ICCF 2019 0-1}) (5. d5 Nf6 6. Nc3 O-O 7. Be2 Nfd7 8. Qc2 Nb6 9. Be3 Bxf3 10. gxf3 a5 11. h4 Na6 12. h5 a4 13. a3 Nc5 14. O-O-O Nbd7 15. hxg6 fxg6 16. f4 Bxc3 {Macs,O (2043)-Blondel,F (2047) ICCF 2019 1-0 (25)}) (5. h3 Bxf3 6. gxf3 Nd7 (6... c6 7. Nc3 Qb6 8. d5 Nd7 9. Be2 Ngf6 10. Qc2 a5 11. Be3 Nc5 12. O-O-O Nfd7 13. Na4 Qb4 14. Nxc5 Nxc5 15. a3 Qb3 16. Qxb3 Nxb3+ 17. Kb1 a4 18. Rhg1 {Williams,C-Lagergren,H (1723) ICCF 2013 0-1 (66)}) 7. Bg2 e5 8. d5 Qh4 9. O-O Ngf6 10. b4 O-O 11. Nc3 Nh5 12. Be3 Nf4 13. Bxf4 exf4 14. Rc1 Bxc3 15. Rxc3 a5 16. b5 b6 {Williams,R (1166)-Ackermann,B ICCF 2017 0-1 (28)}) 5... Nc6 (5... c5 6. d5 (6. dxc5 dxc5 7. Qxd8+ Kxd8 8. Ng5 Bxe2 9. Kxe2 Ke8 10. Nc3 Nc6 11. Rd1 Bxc3 12. bxc3 Nf6 13. f3 Ne5 14. Be3 h6 15. Nh3 b6 16. Nf4 Nxc4 17. Nd5 Nxd5 {Bellisario,C (1296)-Lorenz,B (1984) ICCF 2017 0-1 (30)}) 6... Bxf3 7. Bxf3 Nd7 8. Nc3 Bxc3+ 9. bxc3 Ngf6 10. Qc2 h6 11. h4 Qa5 12. O-O O-O-O 13. Be2 Kb8 14. Rb1 Ka8 15. f4 Qc7 16. Bd2 Rdg8 17. a4 { Moraes,F (1969)-Moujan,P (1905) ICCF 2019 0-1 (70)}) (5... Nd7 6. h3 (6. O-O c5 (6... e5 7. dxe5 Bxf3 8. Bxf3 Bxe5 9. g3 Ne7 10. Nc3 Bxc3 11. bxc3 O-O 12. Bg5 f6 13. Be3 Kg7 14. Rb1 b6 15. Bg2 Ne5 16. Rb4 c5 17. Ra4 Qd7 18. f4 { Kratochvíl,J (2281)-Baciak,M (2240) ICCF 2018 0-1 (107)}) 7. d5 Ngf6 8. Nc3 a6 9. Bd2 O-O 10. a3 Nh5 11. h3 Bxf3 12. Bxf3 Nhf6 13. Re1 Ne5 14. Be2 b5 15. cxb5 axb5 16. Bxb5 Qb6 17. f4 Ned7 {de Paz González,Y (1891)-Sierra Oca,J (1671) ICCF 2015 1-0 (28)}) (6. Be3 c5 7. Nc3 Bxf3 (7... Qa5 8. O-O Rd8 9. Nd5 Bxf3 10. Bxf3 cxd4 11. b4 Qa6 12. Nc7+ {1-0 (12) Kulcár,L-Szöke,J ICCF 2007}) 8. Bxf3 Bxd4 9. Bxd4 cxd4 10. Qxd4 Ngf6 11. O-O-O Qb6 12. Qd2 Rc8 13. b3 h5 14. Rde1 Ne5 15. Bd1 Qxf2 16. Re2 Qc5 17. Bc2 a6 {Henderson,S (2055)-Lagergren,H (2018) ICCF 2008 0-1 (32)}) 6... Bxf3 7. Bxf3 e5 8. d5 Ngf6 9. Be3 b6 10. b4 a5 11. bxa5 Rxa5 12. Nd2 Nc5 13. Nb3 Ra3 14. Nxc5 bxc5 15. O-O O-O 16. h4 Qd7 17. Qc2 {Denisse,R (2007)-Thiebaut,P ICCF 2007 1-0 (44)}) (5... Bxf3 6. Bxf3 Nd7 7. O-O e5 8. d5 Bh6 9. Bxh6 Nxh6 10. Qc1 Qh4 11. g3 Qh3 12. Bg2 Qh5 13. c5 Nxc5 14. b4 Na6 15. h3 f5 16. Nd2 O-O 17. exf5 {Plume,G (1836)-Paxton,W ICCF 2020 1/ 2-1/2 (39)}) 6. Be3 (6. Nbd2 Nf6 7. d5 Nb8 8. Qc2 c6 (8... O-O 9. O-O c6 10. h3 Bd7 11. Nb1 cxd5 (11... Na6 12. Nc3 cxd5 13. cxd5 Nc5 14. Be3 Rc8 15. Bxc5 Rxc5 16. Qd2 b5 17. a3 a5 18. Bd3 Qb6 19. Ne2 a4 20. Rfc1 e6 21. dxe6 Bxe6 22. Nc3 Nd7 23. Be2 {Malmström,J (1778)-Kolanowski,M (2099) ICCF 2017 0-1 (72)}) 12. cxd5 b5 13. Be3 Qc8 14. Qd3 Na6 15. Rc1 Nc5 16. Bxc5 dxc5 17. Qe3 c4 18. Nc3 Qb7 19. a4 a6 20. Ne5 {Elwood,D (1950)-Milde,L (2344) ICCF 2020 1/2-1/2 (35)}) (8... a5 9. h3 Bd7 10. Nb1 O-O 11. Nc3 e5 12. g4 c6 13. Bg5 Na6 14. O-O-O cxd5 15. exd5 Qb8 16. a3 h6 17. Bxf6 Bxf6 18. Kb1 Qd8 19. Nd2 Qe7 20. Rhg1 {Ledezma Borregales,D-Anderson,C (1981) ICCF 2020 1/2-1/2}) 9. h3 Bd7 10. Nb1 (10. O-O Qc7 11. Qd3 Na6 12. Nb3 cxd5 13. exd5 b5 14. Qc3 Rc8 15. cxb5 Qxc3 16. bxc3 Nc7 17. c4 Nfxd5 18. cxd5 Bxa1 19. Nxa1 Bxb5 20. Bxb5+ Nxb5 21. Bb2 O-O {cordova arizaga,c-Anderson,C (1981) ICCF 2020 (41)}) 10... cxd5 11. cxd5 Na6 12. Nc3 Nc5 13. O-O Rc8 14. Qb1 a5 15. Be3 b5 16. b4 axb4 17. Qxb4 Na6 {Wharrier,J (2402)-Cleto Jr.,D (2290) ICCF 2017 1/2-1/2 (28)}) (6. d5 Bxf3 7. Bxf3 Nd4 8. Nc3 (8. O-O c5 9. Nc3 Nf6 10. Be3 Nd7 11. Rb1 a6 12. Bg4 Ne5 13. Be2 Rb8 14. a4 O-O 15. f4 Nd7 16. Kh1 Nb6 17. Bd3 e6 18. dxe6 fxe6 19. b4 Nd7 {Smirnov,B (2281)-Ponomarev,A (2206) ICCF 2019 1-0 (69)}) (8. Bg4 c5 9. dxc6 Nxc6 10. Nc3 Nf6 11. Bf3 O-O 12. O-O Na5 13. b3 Nxe4 14. Bxe4 Bxc3 15. Rb1 Nc6 16. Qc2 Bg7 17. Be3 Qa5 18. Bxc6 bxc6 19. Rfe1 Rfb8 {Criscione,F (1172)-Mallmann,B ICCF 2020 0-1 (38)}) 8... Nxf3+ 9. Qxf3 Nf6 10. O-O O-O 11. Bg5 Nd7 12. Rac1 c5 13. b3 a6 14. a4 Rb8 15. Qh3 Re8 16. f4 Bd4+ 17. Kh1 Nf6 {Tieken,F (2136)-Neijhof, R (2066) ICCF 2018 1-0 (45)}) 6... e5 (6... Bxf3 7. Bxf3 e5 (7... e6 8. Nc3 Nge7 9. O-O O-O 10. d5 exd5 11. cxd5 Ne5 12. Be2 Nd7 13. Rc1 Ne5 14. Nb5 c6 15. dxc6 N5xc6 16. Nxd6 Bxb2 17. Rb1 Be5 18. Nxb7 Qxd1 19. Rfxd1 {Cumming,D (2288) -Armstrong,J (1643) ICCF 2011 1-0 (34)}) 8. dxe5 dxe5 9. Nc3 Nd4 10. Qa4+ c6 11. O-O-O Ne7 (11... Nf6 12. Ne2 Nd7 13. Nxd4 exd4 14. Bxd4 Nb6 15. Bxb6 Qxb6 16. Qa3 Qxf2 17. Kb1 Qh4 18. e5 Qe7 19. Qd6 Rd8 20. Rhe1 Qg5 21. Qb4 Rxd1+ 22. Rxd1 Qf5+ 23. Ka1 {Connelly,K (2230)-Hernandez,A (2389) ICCF 2017 1/2-1/2 (37)} ) 12. Ne2 Qd6 13. Kb1 O-O 14. c5 Qxc5 15. Nxd4 exd4 16. Bxd4 Bxd4 17. Qxd4 Qxd4 18. Rxd4 {Stepán,J (2045)-Milde,L (2271) ICCF 2018 1/2-1/2}) 7. d5 (7. dxe5 dxe5 8. Qa4 (8. Nc3 Nd4 9. Nxd4 exd4 10. Bxg4 dxe3 11. f4 f5 12. exf5 Nh6 13. Bf3 c6 14. fxg6 hxg6 15. Qxd8+ Rxd8 16. Rd1 Nf5 17. Rxd8+ Kxd8 18. Ne4 Nd4 19. Bg4 Kc7 {Owens,J (1927)-Lagergren,H (1940) ICCF 2015 1-0 (53)}) 8... Bd7 9. Qc2 Nd4 10. Qd2 Be6 11. Ng5 Qe7 12. Nc3 c6 13. Nxe6 Qxe6 14. Bd3 Nf6 15. O-O O-O 16. Rad1 Nd7 17. b3 Nc5 18. Bb1 Rfd8 {Yakovenko,V (2082)-Almarza Mato,C (2071) ICCF 2010 0-1 (37)}) 7... Bxf3 8. Bxf3 Nd4 9. O-O (9. Nc3 c5 (9... Ne7 10. h4 h5 11. g3 c5 12. dxc6 bxc6 13. Bg2 O-O 14. O-O Rb8 15. b3 c5 16. Rb1 Qa5 17. Bd2 Nec6 18. Na4 Qa6 19. Be3 Nb4 20. Rb2 Rfe8 21. Nc3 {Marks,R (2354)-Cole,S (1947) ICCF 2017 1-0 (42)}) 10. dxc6 (10. Qa4+ Qd7 11. Nb5 (11. Qxd7+ Kxd7 12. Bd1 f5 13. exf5 gxf5 14. Rb1 e4 15. O-O Nf6 16. b4 b6 17. Ba4+ Ke7 18. bxc5 dxc5 19. f3 exf3 20. Rbe1 Kf7 21. Bxd4 cxd4 22. Nb5 Ne4 {Engwall,C-Wiander,M (1880) ICCF 2009 1-0 (26)}) 11... Ke7 12. b4 b6 13. Bxd4 exd4 14. bxc5 bxc5 15. Qa6 Nh6 16. Rb1 Rhb8 17. O-O Rb6 18. Qa5 Rab8 19. Rb3 Kf8 20. h3 Bf6 21. Rfb1 R8b7 {Eremin,V (2344)-Comtesse,A (2370) ICCF 2015 1/2-1/2 (26)}) 10... bxc6 11. Rb1 (11. Rc1 Rb8 12. b3 c5 13. g3 (13. O-O Ne7 14. g3 Nec6 15. Bg2 O-O 16. Rb1 Qa5 17. Na4 Qd8 18. Rb2 Qd7 19. Kh1 Rfe8 20. Rd2 Rec8 21. f3 Rf8 22. Nc3 Rbd8 23. Rdf2 Nb4 24. Rd2 Nbc6 {Rivas Maceda,J (2302)-Bendig,F (2322) ICCF 2018 1-0 (70)}) 13... Ne7 14. h4 h6 15. Bg2 O-O 16. h5 Qe8 17. Kf1 g5 18. Kg1 a5 19. Kh2 Qc6 20. Qg4 Kh8 21. Bd2 Ng8 22. Qd1 Ra8 {Lyashenko,S (1965)-Burmeister,F (2270) ICCF 2017 0-1 (37)}) 11... Rb8 (11... Ne7 12. g3 O-O 13. Bg2 Qd7 14. O-O a5 ( 14... c5 15. Qd2 Rab8 16. f4 Bh6 17. Kh1 Kh8 18. b3 Nec6 19. Rf2 exf4 20. gxf4 a6 21. Rbf1 Rbe8 22. f5 Bxe3 23. Qxe3 gxf5 24. Qh3 f6 25. exf5 Rg8 26. Nd5 { Rumyantsev,V (2210)-Knöppel,P (1860) ICCF 2018 1/2-1/2 (57)}) 15. b3 f5 16. Bxd4 exd4 17. Na4 Rae8 18. exf5 Nxf5 19. Nb2 Bf6 20. Qd2 Kg7 21. Nd3 Qc7 22. b4 axb4 23. Rxb4 {Castillo Dieguez,R (2094)-Brandl,A (2058) ICCF 2020 1-0 (37)}) 12. b4 (12. O-O Ne7 13. b4 O-O 14. a4 Kh8 15. b5 Rc8 16. Rc1 f5 17. exf5 Nexf5 18. Bxc6 Nxc6 19. bxc6 a6 20. h3 Qe8 21. c7 Rxc7 22. Nd5 Rcf7 23. a5 Nd4 { Wydornik,R (2240)-Lanzani,P (2223) ICCF 2019 1/2-1/2 (45)}) 12... Nf6 13. Bxd4 exd4 14. Qxd4 Rxb4 15. Rxb4 c5 16. Qd2 cxb4 17. Nb5 O-O 18. Qxb4 d5 19. cxd5 Qb6 20. Qa4 Rb8 {Tkachenko,Y (2294)-Burmeister,F (2270) ICCF 2017 1/2-1/2 (31)} ) (9. Bxd4 exd4 10. Nd2 (10. O-O c5 11. Nd2 Nf6 12. Be2 O-O 13. Bd3 Qc8 14. Re1 Re8 15. f4 a6 16. Qf3 Ng4 17. b3 Qd7 18. Kh1 Ne3 19. Re2 b5 20. Rae1 f6 21. Nf1 Nxf1 {Pastukhov,I (2307)-Burmeister,F (2270) ICCF 2017 1-0 (53)}) 10... Nf6 ( 10... Ne7 11. Be2 O-O 12. O-O c6 13. Nf3 Qb6 14. Qd2 f5 15. Bd3 fxe4 16. Bxe4 cxd5 17. cxd5 Rac8 18. Qe2 Qc5 19. b4 Qxb4 20. Rab1 Qa5 21. Bd3 Nf5 22. Bxf5 { O'Hare,C (2315)-Dunne,S (1946) ICCF 2005 1-0 (56)}) 11. O-O O-O 12. Nb3 Nd7 13. Rb1 Qf6 14. Bg4 Ne5 15. Be2 Nd7 (15... c5 16. f4 Nd7 17. Qd3 Rfe8 18. Nd2 Qd8 19. g3 Qc7 20. Bd1 Re7 21. a3 a6 22. Re1 h5 23. Kg2 Rb8 24. b4 b6 25. Nf3 Ree8 26. Ba4 b5 27. Bb3 {Fua,N (2053)-Davidson,J (2164) ICCF 2012 1/2-1/2 (30)}) 16. Qd2 (16. f4 a5 17. Bg4 Nb6 18. Qd3 a4 19. Nd2 Qh4 20. Bh3 Rae8 21. Rf3 Qe7 22. Rbf1 c6 23. g3 Nd7 24. Bxd7 Qxd7 25. R3f2 c5 {1/2-1/2 (25) Pommrich,R (2220) -Turóczi,P (2141) ICCF 2018}) 16... Rfe8 17. Bd3 a5 18. a4 c5 19. f4 Qd8 20. Rbe1 Qc7 {Jonsson,L (2223)-Arnold,H (2158) ICCF 2019 1-0 (42)}) (9. a3 Nh6 10. Nd2 O-O 11. O-O f5 12. Bxd4 exd4 13. exf5 Nxf5 14. Ne4 a5 15. Re1 a4 16. Bg4 c6 17. b4 axb3 18. Qxb3 cxd5 19. cxd5 Qa5 20. Red1 h6 {Avellán,G (2233)-Jensen,C (2357) ICCF 2014 1/2-1/2 (31)}) 9... c5 (9... Ne7 10. Nc3 (10. Qa4+ c6 11. Nd2 O-O 12. Rfe1 b5 13. Qd1 Nxf3+ 14. Qxf3 Qd7 15. dxc6 Qxc6 16. Rac1 b4 17. c5 d5 18. exd5 Qxd5 19. Qxd5 Nxd5 {0-1 (19) Lehtinen,P (2286)-Mikkonen,M (1943) ICCF 2015}) 10... O-O (10... c5 11. Rb1 O-O 12. b4 cxb4 13. Rxb4 Nxf3+ 14. Qxf3 b6 15. a4 f5 16. a5 f4 17. Bd2 bxa5 18. Rb7 Rb8 19. Rfb1 Rxb7 20. Rxb7 a6 21. Qh3 Rf6 22. Rd7 {Laine,E (1797)-Mikkonen,M (1923) ICCF 2017 1-0 (34)}) 11. Rb1 (11. Rc1 c6 12. dxc6 bxc6 13. g3 Rb8 14. b3 c5 15. Bg2 f5 16. Qd2 Qd7 17. Rce1 Rf7 18. f4 Rbf8 19. exf5 gxf5 20. Ne2 a5 21. Kh1 Qc7 22. Rf2 Kh8 {Babic,D (2485) -Mannermaa,J (2443) ICCF 2019 1/2-1/2 (30)}) (11. Bg4 f5 12. exf5 Nexf5 13. Bxf5 Rxf5 14. Qd2 Qh4 15. f3 Raf8 16. Bf2 Bh6 17. Qd3 Qh5 18. Bxd4 exd4 19. Qxd4 Bf4 20. h3 Qg5 21. Rfe1 Be5 22. Qg4 Qf6 {Secondi,A (1574)-Williams,R (2287) ICCF 2012 0-1 (39)}) 11... c6 12. dxc6 bxc6 13. b4 Qd7 (13... Qc8 14. a4 a5 15. b5 cxb5 16. Nxb5 Nxf3+ 17. Qxf3 Qxc4 18. Nxd6 Qa2 19. Rfd1 Nc6 20. Ra1 Qe6 {1/2-1/2 (20) Gacnik,L (2173)-Deneuville,C (2274) ICCF 2020}) 14. Re1 Rab8 15. a4 f5 16. b5 c5 17. a5 Kh8 18. Bg5 Bf6 19. Bxf6+ Rxf6 20. exf5 gxf5 21. Nd5 {Stewart,D-Anderson,C (1981) ICCF 2020 1-0 (36)}) 10. dxc6 (10. Nc3 Nf6 11. h3 (11. Be2 a6 (11... O-O 12. f3 Nd7 13. Bd3 f5 14. exf5 gxf5 15. Qd2 Qh4 16. Kh1 Kh8 17. Rab1 Rae8 18. g3 Qh5 19. g4 fxg4 20. fxg4 Qxg4 21. Ne4 Nf5 22. Qf2 b5 23. Rg1 {Barclay,A (2309)-Wong,V (2176) ICCF 2019 1/2-1/2 (27)}) 12. Bd3 O-O 13. f3 (13. a4 Nh5 14. g3 Nf6 15. f3 Nd7 16. a5 Rb8 17. Ra3 b6 18. axb6 Rxb6 19. b3 Bf6 20. Ne2 Bg5 21. f4 Nxe2+ 22. Qxe2 exf4 23. gxf4 Bf6 24. Bc2 Re8 { Dunks,P (1868)-Stracey,N (2127) ICCF 2016 0-1 (66)}) 13... Rc8 14. Ne2 b5 15. Rc1 b4 16. Bg5 a5 17. Ra1 Qc7 18. b3 Ra8 19. a4 Rae8 20. Rb1 Nh5 21. Nxd4 exd4 22. g4 h6 {Elwood,D (1908)-Moujan,P (1905) ICCF 2019 0-1 (35)}) (11. Bg5 h5 12. Rb1 O-O 13. Qd3 a6 14. Ne2 Qc7 15. b3 Nd7 16. Bd2 Qd8 17. g3 h4 18. a4 a5 19. Kh1 Bf6 20. Bg4 Kg7 21. gxh4 Bxh4 22. f4 Nf6 {Roccetti,A (2253)-Grippo,L (2231) ICCF 2014 1/2-1/2 (47)}) (11. Bxd4 cxd4 12. Qa4+ Qd7 13. Nb5 O-O 14. Qb4 Ne8 15. a4 a6 16. Na3 f5 17. Nc2 Nf6 18. Rfe1 fxe4 19. Bxe4 Nxe4 20. Rxe4 Rxf2 21. Qb3 Raf8 22. h3 Rd2 {Lima,A (1994)-Bjazevic,P (2202) ICCF 2007 0-1 (27)}) 11... a6 12. Be2 Nd7 13. Qd2 O-O 14. Rab1 Qa5 15. Rfc1 b5 16. Bd3 Rab8 17. b3 Rfe8 18. cxb5 axb5 19. a3 b4 20. axb4 Qxb4 21. Qd1 Rb7 {Iturbide,H (2275)-Costa Trillo,V (2228) ICCF 2014 1/2-1/2 (35)}) (10. Qa4+ Qd7 11. Qxd7+ Kxd7 12. Bd1 Nf6 13. Nc3 a6 14. f4 Bh6 15. Bxd4 exd4 16. e5 dxc3 17. exf6 cxb2 18. Rb1 Kc7 19. Rxb2 Rhe8 20. g4 Re4 21. g5 Bf8 {Llompart Flexas,G (1935)-Gibson,T (1936) ICCF 2014 1-0 (42)}) (10. Bxd4 cxd4 11. Nd2 Nf6 12. b4 a5 13. b5 O-O 14. a4 Rc8 15. Bg4 Nxg4 16. Qxg4 Bh6 17. Nf3 Rxc4 18. Qh3 Kg7 19. Rfc1 Bxc1 {0-1 (19) Kurz,R (1565)-Seeger,M ICCF 2007}) (10. Be2 Nf6 11. f3 O-O 12. Bd3 Nh5 13. Nc3 Nf4 14. Qd2 Nxd3 15. Qxd3 a6 16. a4 f5 17. Rfb1 f4 18. Bxd4 exd4 19. Nd1 a5 20. Qc2 b6 21. Nf2 Be5 {Sánchez Carol,J (2219)-Zawadka,Z (2243) ICCF 2019 1/2-1/2}) 10... bxc6 11. Nc3 (11. Nd2 Rb8 12. Rb1 Ne7 13. b4 O-O 14. a4 Qc7 15. Re1 Nc8 16. b5 Nb6 17. Bg4 h5 18. Bh3 a5 19. Rc1 c5 20. g3 Kh7 21. Bg2 Qe7 22. h4 f6 { Åberg,L (2219)-Kullberg,M (1903) ICCF 2017 1/2-1/2 (31)}) (11. b3 Ne7 12. Nc3 O-O 13. g3 Qd7 14. Bg2 Rad8 15. Kh1 f5 16. exf5 Nexf5 17. Bg5 Rde8 18. Qd2 a5 19. Rad1 Rf7 20. Ne2 h6 21. Be3 Nxe2 22. Qxe2 e4 {Ellis,L (2345)-Rhodes,J (2397) ICCF 2017 1/2-1/2 (35)}) 11... Ne7 12. b4 (12. c5 O-O 13. cxd6 Qxd6 14. Na4 Rfd8 15. a3 Qb8 16. Rb1 Qb5 17. Nc3 Qb7 18. Qc1 Nc8 19. Be2 Nxe2+ 20. Nxe2 Nd6 21. Qc2 Nb5 22. Rfd1 Nd4 23. Nxd4 exd4 {Ishemguzhin,I (2179)-Ponomarev,A (2206) ICCF 2019 1/2-1/2 (27)}) (12. g3 Rb8 13. b3 O-O 14. Bg2 c5 15. Qd2 a6 16. Rad1 Qd7 17. Kh1 Nec6 18. f4 exf4 19. Bxf4 Nb4 20. Rf2 Qe7 21. Rdf1 Qe6 22. Bg5 Be5 23. Nd1 f6 {Risquet,C (2386)-Burmeister,F (2270) ICCF 2017 0-1 (51)}) ( 12. Bg4 O-O 13. f4 f5 14. fxe5 dxe5 15. exf5 Nexf5 16. Bf2 Qe7 17. Ne4 Rad8 18. Qa4 Nd6 19. Nxd6 Rxd6 20. Be3 h5 21. Bh3 Kh7 22. Rxf8 Bxf8 23. Re1 Bh6 { López-Neiger,M (1775)-Schwenk,H (2110) ICCF 2015 0-1 (28)}) 12... O-O 13. Rc1 ( 13. Re1 Rb8 14. Rb1 Qc7 15. Be2 f5 16. Qd3 f4 17. Bd2 Nc8 18. a4 Nb6 19. a5 Nd7 20. f3 Rfd8 21. Rec1 Bf6 22. Be1 Kg7 23. Bf2 Nf8 24. Qd1 Nfe6 {Smith,R (1921) -Arnold,H (2158) ICCF 2019 1-0 (47)}) 13... a6 (13... Rc8 14. g3 Qb6 15. Rb1 Qa6 16. Be2 Rcd8 17. Re1 Qa3 18. Bxd4 exd4 19. Rb3 Qa6 20. c5 Qb7 21. Nb1 d5 22. Nd2 Qc7 23. Ba6 Rfe8 24. Qf3 h5 25. Kg2 {Sesko,M (2205)-Buss,M (2206) ICCF 2019 1/2-1/2 (48)}) 14. a4 Qd7 15. b5 Qa7 16. Re1 h5 17. Qd3 Qd7 18. b6 a5 19. Rb1 Rfb8 20. Rb2 c5 21. Reb1 Nec6 22. Nd5 Nb4 23. Qd2 Rb7 24. Bd1 Ra6 25. Bxd4 exd4 26. Qg5 Ra8 27. Bxh5 Nxd5 28. Bg4 f5 29. exf5 Nc3 30. Bf3 d5 31. f6 Qd8 32. h4 Rf7 33. fxg7 Qxg5 34. hxg5 Rxf3 35. gxf3 Nxb1 36. Rxb1 dxc4 37. Kf1 c3 38. Ke2 c4 39. Kd1 d3 40. Rb5 c2+ 41. Kc1 Rd8 42. b7 d2+ {0-1 (42) Öztürk, S-Lautenbach,W (2260) ICCF 2011 1 d4 d6: Tartakower System-and Modern Defence}) 1... d6 {[%csl Gb2,Gc3,Gd4,Ge3,Gf2][%CAl Gc1g5,Gd4e5,Gf6g7,Gf6g5,Ge5f4,Gd4c5]} 2. g3 (2. Nf3 Bg4 (2... c6 3. c4 (3. e3 Qc7 4. Bd3 Nf6 5. b3 e5 6. O-O e4 7. Nc3 exd3 8. Qxd3 Bg4 9. e4 Bxf3 10. Qxf3 Nbd7 11. Qg3 O-O-O 12. f3 h6 13. a4 g5 14. f4 gxf4 {Vandale,R-Baker,S ICCF 2015 0-1 (43)}) 3... Qc7 (3... Bg4 4. Nc3 ( 4. h3 Bf5 5. Nc3 e5 6. dxe5 Na6 7. e4 Bg6 8. Bg5 f6 9. exf6 Nxf6 10. Bd3 Be7 11. O-O O-O 12. Rc1 Nc5 13. Bc2 Nfxe4 14. Bxe7 Qxe7 15. Nxe4 Bxe4 {Romero, P-Hoffman,D ICCF 2015 1-0 (94)}) 4... Nd7 5. e4 Qc7 (5... e5 6. Be2 Be7 7. O-O Bxf3 8. Bxf3 Bg5 9. Bxg5 Qxg5 10. d5 c5 11. Qb3 Nb6 12. a4 Qe7 13. a5 Nc8 14. a6 b6 15. Qb5+ Kd8 16. Be2 Nf6 17. Qc6 {Mamonovas,V (2521)-Kasparavicius,L (2125) ICCF 2009 1-0 (33)}) 6. Be2 (6. h3 Bh5 7. Qc2 Bxf3 8. gxf3 O-O-O 9. Bg5 f6 10. Be3 g5 11. h4 gxh4 12. Rxh4 e5 13. d5 c5 14. O-O-O Bg7 15. Bh3 a6 16. Rg1 Bf8 17. Qe2 Kb8 {Laine,E (1779)-Pereyra,D (1530) ICCF 2017 1-0 (30)}) 6... O-O-O 7. O-O Nb8 8. Qa4 e5 9. d5 Bd7 10. Qxa7 h6 11. Na4 Re8 12. Nb6+ Kd8 13. Na8 Qc8 14. c5 {1-0 (14) Hildebrand,G (2323)-Pereyra,D (1584) ICCF 2017}) 4. Nc3 (4. e4 g6 5. Nc3 Bg4 6. Be2 Bxf3 7. Bxf3 Bg7 8. O-O e6 9. Be3 Ne7 10. Qd2 Nd7 11. Rfd1 f5 12. b4 fxe4 13. Bxe4 Rf8 14. d5 Bxc3 15. Qxc3 cxd5 {Aiken, J-Ridout,P (1360) ICCF 2019 0-1}) 4... Bf5 (4... Bg4 5. e3 Nd7 6. Be2 Ngf6 7. O-O Bxf3 8. Bxf3 e5 9. Re1 Be7 10. d5 h6 11. e4 O-O 12. Bd2 Rae8 13. Rc1 Nh7 14. a3 {1-0 (14) Ong,A (1448)-Brown,C ICCF 2017}) 5. e4 Bg6 6. Bd3 (6. Be3 Nd7 7. Nh4 O-O-O 8. Be2 e6 9. O-O f5 10. d5 c5 11. Nb5 Qb8 12. dxe6 Ne5 13. Nxf5 Bxf5 14. exf5 Nf6 15. b4 a6 16. Nc3 b6 17. bxc5 bxc5 {Bodziony,P-Pereyra,D (1530) ICCF 2017 1-0 (26)}) (6. Be2 Nd7 7. O-O (7. Nh4 O-O-O 8. Rb1 e6 9. h3 Re8 10. b4 f5 11. b5 c5 12. b6 Nxb6 13. O-O a6 14. exf5 exf5 15. Bf3 Nxc4 16. Rxb7 Qxb7 17. Bxb7+ Kxb7 18. Qb3+ Nb6 {Vertíz Gutiérrez,P (2303)-Pereyra,D (1530) ICCF 2017 1-0 (25)}) 7... O-O-O 8. Qa4 Kb8 9. Bf4 f5 10. c5 fxe4 11. cxd6 exd6 12. Nh4 Ngf6 13. Nxg6 hxg6 14. Qb3 Ka8 15. a4 Be7 16. a5 Rh7 17. a6 b6 {Wood,B (1634)-Pereyra,D (1530) ICCF 2017 1-0 (25)}) 6... Nd7 7. h4 h6 8. Be3 O-O-O 9. Qd2 e6 10. O-O-O f6 11. h5 Bf7 12. Kb1 Kb8 13. g4 Ka8 14. d5 { Harman,K (1635)-Pereyra,D (1530) ICCF 2017 1-0}) (2... g6 3. c4 (3. b3 Bg7 4. Bb2 c5 5. e3 Nf6 6. Bb5+ Nbd7 7. O-O O-O 8. Nbd2 a6 9. Bd3 b5 10. c4 {1-0 (10) McLaughlin,E (1430)-Fullen,P ICCF 2018}) (3. b4 Nf6 4. c4 Bg7 5. Bb2 O-O 6. g3 c5 7. bxc5 dxc5 8. d5 e6 9. Nc3 Ne4 10. Nxe4 Bxb2 11. Rb1 Bg7 12. Bg2 exd5 13. Qxd5 Na6 14. O-O Qxd5 {Dudley,B (1696)-Belanoff,S ICCF 2009 0-1}) (3. h3 Bg7 ( 3... Nf6 4. e3 Bg7 5. Be2 O-O 6. O-O Re8 7. Re1 a5 8. a3 Nbd7 9. Nc3 e5 10. dxe5 Nxe5 11. Nxe5 Rxe5 12. Rb1 Ne4 13. Nxe4 Rxe4 14. Bf3 Re8 15. Bg4 { Hardwick,M (1278)-Barbalic,Z (1989) ICCF 2020 0-1 (34)}) 4. e3 e6 5. Bb5+ Nd7 6. Nc3 a6 7. Bxd7+ Qxd7 8. O-O b6 9. a3 Bb7 10. e4 h6 11. d5 e5 12. Re1 g5 13. Bxg5 hxg5 14. Nxg5 O-O-O {Hardwick,M (1236)-Eccles,A ICCF 2019 0-1 (25)}) 3... f5 4. g3 Bg7 (4... Nf6 5. b4 e5 6. dxe5 dxe5 7. Qxd8+ Kxd8 8. a3 e4 9. Bb2 Bg7 10. Nd4 Nc6 11. Nxc6+ bxc6 12. Bg2 Be6 13. f3 e3 14. f4 Ke7 15. Bxc6 Rad8 16. Be5 {Liedl,W-Koops,M (2102) ICCF 2012 1-0 (37)}) 5. Bg2 Nf6 6. O-O e6 7. b4 O-O 8. Bb2 a5 9. b5 Nbd7 10. e3 Qe7 11. Qc2 Rb8 12. Nc3 b6 13. Nd2 e5 14. Rae1 { Boreisis,V (1808)-Koops,M (2102) ICCF 2012 1-0 (36)}) (2... b6 3. e4 Bb7 4. Nc3 (4. d5 h6 5. b3 Nf6 6. Bd3 Nbd7 7. Bb2 Nc5 8. Bb5+ Nfd7 9. Qd4 a6 10. Bxd7+ Nxd7 11. O-O Nf6 12. Qe3 Qd7 13. c4 O-O-O 14. a4 e6 15. b4 Ng4 {Zondervan,F (1476)-Corbin,J (1615) ICCF 2019 1-0 (52)}) 4... Nd7 5. Bc4 e6 6. O-O Be7 7. d5 e5 8. a4 Ngf6 9. g3 a6 10. b3 O-O 11. Qe2 Bc8 12. Ne1 Nb8 13. Nd3 Bb7 14. Bd2 { Blondel,F (1776)-Chromczak,T (1919) ICCF 2017 1-0 (32)}) (2... e5 3. dxe5 dxe5 (3... g6 4. exd6 cxd6 5. e3 f5 6. b3 Bg7 7. c3 Ne7 8. Bb2 O-O 9. Be2 f4 10. exf4 Rxf4 11. Nbd2 Nd5 12. Bc4 Qe7+ 13. Qe2 Qxe2+ 14. Kxe2 Nc6 15. Bxd5+ { Reyes Cortés,R (1669)-Sanchez Aguirregomezcorta,X (1440) ICCF 2017 1-0 (46)}) 4. Qxd8+ Kxd8 5. Nxe5 Nf6 6. Nxf7+ Ke7 7. Nxh8 a5 8. Bg5 h6 9. Ng6+ {1-0 (9) Osinx,L-Evans,R ICCF 2017}) (2... h6 3. c4 (3. e4 Nf6 4. Nc3 a6 5. Be2 e5 6. dxe5 Nfd7 7. Bf4 Nb6 8. O-O Be7 9. exd6 Bxd6 10. e5 Be7 11. Qc1 O-O 12. Rd1 N8d7 13. Bxh6 Qe8 14. Bf4 Nc5 {Saunders,D-Rodrigues,C ICCF 2008 1-0 (35)}) 3... g5 (3... Nf6 4. Nc3 a6 (4... c6 5. e4 Bg4 6. Be2 Nbd7 7. O-O Bxf3 8. Bxf3 e5 9. Be3 Be7 10. Qc2 O-O 11. Be2 Nh7 12. Rad1 Qc7 13. f4 Bf6 14. c5 exd4 15. cxd6 Qc8 16. Bxd4 {Sladek,V (1850)-Brumec,F ICCF 2011 1-0 (43)}) 5. e4 Bg4 6. Be2 Nc6 7. Be3 e6 8. h3 Bh5 9. Qb3 Qc8 10. d5 Ne7 11. g4 Bg6 12. Nd2 b5 13. cxb5 c5 14. b6 Rb8 15. Qa4+ {Fernández,G (1972)-Gallo,E ICCF 2009 1-0 (32)}) 4. e3 Bg7 5. Be2 Nd7 6. Nc3 c6 7. O-O Nf8 8. b4 Ng6 9. Bb2 {1-0 (9) Gil Colomer,E (1897) -Muñoz Cabello,J (1670) ICCF 2010}) (2... Bf5 3. Bf4 (3. Nc3 Nc6 4. e4 Bg6 5. Bf4 e5 6. dxe5 dxe5 7. Nxe5 Qd6 8. Bb5 Nge7 9. Qxd6 cxd6 10. Nxg6 hxg6 11. O-O-O Nc8 12. Be2 f5 13. exf5 gxf5 14. h4 Nb4 {Santamaría Quintana,I (1329) -Sanchez Aguirregomezcorta,X (1389) ICCF 2017 0-1 (43)}) (3. c4 c6 4. Nc3 Nd7 5. e4 Bg6 6. Nh4 Qc7 7. f4 f6 8. d5 O-O-O 9. b4 a6 10. dxc6 Qxc6 11. Be3 Bxe4 12. Rc1 Bg6 13. b5 axb5 14. cxb5 Qc7 {Schmidt,H (2342)-Pereyra,D (1584) ICCF 2017 1-0}) (3. g3 Nc6 4. Bg2 Nf6 5. c4 Qd7 6. d5 Nb4 7. Nd4 Bxb1 8. Rxb1 c5 9. Nb5 e5 10. Qa4 Ke7 11. a3 Qf5 12. axb4 Qxb1 13. O-O Qg6 14. bxc5 Ne8 {Jensen,B (2189)-Secrieru,I (1921) ICCF 2006 1-0 (32)}) 3... Nd7 4. e3 Ngf6 5. Bd3 Bg4 6. h3 Bxf3 7. Qxf3 c6 8. Nc3 Qc7 9. O-O-O O-O-O 10. g4 e6 11. Bg3 Nb6 12. g5 Nfd5 13. Ne4 Nb4 14. Be2 {Woodard,D (2283)-Chandler,J (1680) ICCF 2011 1-0}) (2... e6 3. Bf4 (3. c4 Ne7 4. Nc3 Ng6 5. g3 Be7 6. Bg2 c6 7. O-O Nd7 8. Qc2 Nb6 9. b3 Bd7 10. Re1 Qc7 11. Bb2 f6 12. e3 c5 13. a4 a5 14. dxc5 dxc5 {Mills,T (1614) -Gomez,P ICCF 2012 0-1 (39)}) (3. g3 Qe7 4. Bg2 Nd7 5. O-O Ndf6 6. Bg5 Bd7 7. e4 h6 8. Bxf6 gxf6 9. Re1 O-O-O 10. Na3 h5 11. e5 d5 12. c4 c6 13. Nd2 f5 14. cxd5 exd5 {Anderson,L (1021)-Pereyra,D (1584) ICCF 2017 1-0}) (3. Nc3 Nc6 4. e4 a6 5. Be2 Nf6 6. a3 b5 7. d5 Nb8 8. O-O exd5 9. Nxd5 Nxd5 10. exd5 Be7 11. c3 Bb7 12. a4 bxa4 13. Rxa4 O-O 14. Qb3 Qc8 {Ghisi,S (1788)-Williams,R (1721) ICCF 2011 1-0 (38)}) 3... b6 4. e3 Bb7 5. Bd3 h6 6. Nbd2 g5 7. Bg3 g4 8. Nh4 h5 9. h3 Nf6 10. Qe2 Nc6 11. c3 Qd7 12. O-O-O O-O-O 13. Kb1 Kb8 14. f3 {Caviglia, M-Pereyra,D ICCF 2014 1-0 (25)}) (2... c5 3. dxc5 Qa5+ 4. Nc3 Bg4 5. cxd6 e6 6. Nd2 b5 7. Nb3 Qb4 8. h3 Bf5 9. e4 Bxe4 10. Bxb5+ Nd7 11. Be3 Bxc2 12. Qf3 Rc8 13. Qb7 Rd8 14. Bxd7+ {Tabudlong,R-Ridout,P (1313) ICCF 2020 1-0}) (2... Bd7 3. e4 Nc6 4. Bc4 h6 5. d5 Ne5 6. Nxe5 dxe5 7. Qh5 g6 8. Qxe5 Nf6 9. Qc3 Bg7 10. e5 Nh7 11. Be3 a6 12. f4 Bf5 13. O-O O-O 14. Qb3 {Rodriguez,L (2061)-Pereyra,D ICCF 2015 1-0}) 3. c4 (3. e4 Nf6 (3... e6 4. h3 Bh5 5. c4 (5. Nc3 d5 6. exd5 { 1-0 (6) Pichushkin,V (2051)-Bourgault,J (2029) ICCF 2019}) 5... Nf6 (5... Bxf3 6. Qxf3 Nc6 7. d5 Nd4 8. Qd3 e5 9. Be3 c5 10. dxc6 bxc6 11. Bxd4 exd4 12. Qxd4 Rb8 13. Nd2 c5 14. Qc3 Be7 15. e5 dxe5 16. Qxe5 Nf6 17. O-O-O {Rumyantsev,V (2134)-Hale,A (2101) ICCF 2017 1/2-1/2 (27)}) 6. Nc3 Be7 7. Be2 O-O 8. O-O Bg6 9. Bd3 Nc6 10. Be3 h6 11. a3 Nd7 12. Qb3 Na5 13. Qc2 c5 14. d5 Bf6 15. Rad1 { Sileika,A (1685)-Barbalic,Z (1971) ICCF 2017 1-0 (61)}) (3... Nd7 4. Bc4 (4. h3 Bxf3 5. Qxf3 c6 6. Be2 e5 7. c3 Qf6 8. Qd3 g6 9. Nd2 Bg7 10. Nf3 h6 11. Be3 Ne7 12. dxe5 Nxe5 13. Nxe5 dxe5 14. Rd1 O-O 15. Qd7 Qh4 {Sandström,L (2038) -Wiander,M (1880) ICCF 2009 1-0}) 4... Ngf6 5. Nc3 e5 6. Be3 Be7 7. h3 Bh5 8. Qe2 c6 9. Bb3 exd4 10. Bxd4 O-O 11. g4 Bg6 12. O-O-O Re8 13. Nd2 d5 14. e5 Bc5 15. Bxc5 {Huaylinos Soria,J-Solari,A (2400) ICCF 2012 0-1 (33)}) (3... Bxf3 4. Qxf3 c6 5. Bc4 e6 6. d5 cxd5 7. exd5 e5 8. O-O Nf6 9. Qb3 Qc7 10. Be2 a6 11. a4 g6 12. a5 Nbd7 13. Rd1 Bg7 14. Be3 Rc8 15. Na3 {Andersson,S (1887)-Ipekyilmaz, E (1710) ICCF 2018 1-0 (58)}) 4. h3 (4. Nbd2 e6 5. Bd3 Be7 6. b3 (6. O-O c6 7. Re1 d5 8. c3 dxe4 9. Nxe4 Nbd7 10. Ng3 c5 11. Be3 O-O 12. h3 cxd4 13. Bxd4 Bxf3 14. Qxf3 Bc5 15. Bxc5 Nxc5 16. Bc2 Qb6 17. b3 h6 {Landero Luna,V (2408)-Varela Mourín,J (2198) ICCF 2007 1/2-1/2 (57)}) 6... O-O 7. Bb2 Nc6 8. O-O Nb4 9. Be2 c5 10. c3 Nc6 11. h3 Bxf3 12. Bxf3 cxd4 13. cxd4 d5 14. e5 Nd7 15. Be2 a6 { Mogstad,O (2073)-Recasens Sánchez,J (2080) ICCF 2013 1-0}) (4. Nc3 Nbd7 (4... d5 5. e5 Ne4 6. Bd2 Nxc3 7. Bxc3 e6 8. Be2 Be7 9. O-O O-O 10. h3 Bxf3 11. Bxf3 c5 12. b3 cxd4 13. Qxd4 Nc6 14. Qg4 d4 15. Bxd4 Nxd4 16. Rad1 {Meijer,Y (1718) -Brandelid,A ICCF 2018 0-1 (40)}) 5. h3 (5. e5 Ng8 6. h3 Bxf3 7. Qxf3 c6 8. exd6 exd6 (8... e6 9. d5 cxd5 10. Nb5 Rc8 11. Bf4 Qf6 12. O-O-O g5 13. Bd2 Qxf3 14. gxf3 Ne5 15. Nxa7 {1-0 (15) Opitz,P (2239)-Chouraqui,G (2252) ICCF 2009}) 9. Bd3 Be7 10. Bf4 Ngf6 11. O-O-O O-O 12. g4 d5 13. h4 b5 14. g5 Ne8 15. Qh5 g6 16. Qh6 Bd6 {Pajak,J (1897)-Hughes,G (1777) ICCF 2014 1-0}) (5. Be2 e5 6. h3 Bh5 7. dxe5 dxe5 8. O-O c6 9. Bd2 Bb4 10. a3 Be7 11. Bg5 Bxf3 12. Bxf3 O-O 13. Qd2 Nc5 14. Rad1 Qxd2 15. Rxd2 Rad8 16. Rfd1 Rxd2 {Galbiati,A-Saba,N (1627) ICCF 2013 1-0 (58)}) 5... Bh5 (5... Bxf3 6. Qxf3 e5 7. dxe5 dxe5 8. Bg5 Be7 9. Bc4 O-O 10. O-O-O Qc8 11. Rhe1 c6 12. Kb1 b5 13. Bd3 Qc7 14. g4 a5 15. Ka1 a4 16. a3 b4 17. axb4 {Neil,C (1377)-Hendri Sevano,R ICCF 2017 0-1}) 6. e5 Bxf3 7. Qxf3 dxe5 8. dxe5 Nxe5 9. Qxb7 Qb8 10. Bb5+ Kd8 11. Qa6 Qb6 12. Qa4 e6 13. Bf4 Bd6 14. O-O-O Ke7 15. Rhe1 Ned7 {Cremerius,A-Gurgui,D (1785) ICCF 2017 1-0 (26) }) (4. Bd3 c6 5. Bg5 (5. h3 Bh5 6. Be3 Nbd7 7. Nc3 e5 8. g4 Bg6 9. Qe2 Qc7 10. O-O-O O-O-O 11. Nh4 Be7 12. f4 h6 13. Qf2 b6 14. d5 Nc5 15. Bxc5 dxc5 16. dxc6 Qxc6 {Bernal Caamaño,J (2065)-Scaramuzzo,G (2007) ICCF 2018 1-0 (32)}) 5... e6 6. Nbd2 Bxf3 7. Nxf3 Be7 8. O-O d5 9. e5 Nfd7 10. Qd2 O-O 11. c3 Re8 12. b4 Na6 13. Qf4 f5 14. Rae1 Nc7 15. a4 Nb6 {McLaughlin,E (1633)-Stetson,M ICCF 2016 1-0 (29)}) 4... Bh5 (4... Bxf3 5. Qxf3 c6 (5... Nbd7 6. Bc4 e5 7. c3 c6 8. a4 Be7 9. Nd2 O-O 10. O-O Rb8 11. Qe2 d5 12. dxe5 Nxe5 13. exd5 Nxc4 14. Nxc4 cxd5 15. Ne5 Ne4 16. Be3 a6 17. Qc2 {Gitananda,R-Wright,D (1618) ICCF 2015 1-0 (29)} ) 6. Be3 d5 7. e5 Nfd7 8. Bd3 e6 9. Nd2 c5 10. c3 Qb6 11. Rb1 Nc6 12. a3 a5 13. O-O Be7 14. Qg3 g6 15. h4 h5 16. Rfd1 {Herman,T (2149)-Rudd,J ICCF 2017 1-0 (25)}) (4... Bd7 5. Bd3 h6 6. e5 Nd5 7. O-O e6 8. Re1 Be7 9. c4 Nb4 10. Bf1 c5 11. d5 O-O 12. a3 N4a6 13. Bf4 b5 14. exd6 Bg5 15. Bxg5 hxg5 16. cxb5 {Smith, M-Zielinski,T ICCF 2018 1-0 (27)}) 5. Nc3 (5. Bd3 e6 6. c4 (6. c3 Be7 7. Qb3 Qc8 8. Nbd2 Nbd7 9. O-O O-O 10. Qc2 Bg6 11. Nh4 c5 12. Nxg6 hxg6 13. Qa4 a6 14. Nf3 Qc7 15. Re1 b5 16. Qd1 Nb6 17. Qe2 Nfd7 {Lucki,S (2336)-Bröker,C (2331) ICCF 2013 1-0 (55)}) (6. Nbd2 Be7 7. c3 O-O 8. Qc2 Nbd7 9. O-O e5 10. b3 Re8 11. Re1 Bf8 12. Nh4 exd4 13. cxd4 c5 14. Nf5 cxd4 15. Bb2 Rc8 16. Qb1 Bg6 17. Bxd4 Nc5 {Lloyd,G (2258)-Kauppinen,M (2275) ICCF 2007 1/2-1/2 (39)}) 6... Nc6 ( 6... Be7 7. Nc3 Nc6 8. Be3 O-O 9. Qe2 (9. O-O Nd7 10. g4 Bg6 11. Be2 a5 12. d5 Nb4 13. h4 h6 14. h5 Bh7 15. a3 Na6 16. dxe6 fxe6 17. Nd4 Ndc5 18. f4 Bf6 19. f5 Be5 20. Bf3 Kh8 {Vrana,L (2153)-Bredenhof,B (2191) ICCF 2008 0-1 (54)}) 9... Nb4 10. Bb1 Bxf3 11. Qxf3 Nd7 12. a3 Nc6 13. O-O Bg5 14. Bc2 Bxe3 15. fxe3 Qg5 16. Rad1 Rad8 17. Qf4 Qxf4 18. exf4 {Abramov,S (2219)-Ott,P (2205) ICCF 2008 1/ 2-1/2}) 7. Be3 Bxf3 8. gxf3 Be7 9. Qb3 e5 10. d5 Nd4 11. Bxd4 exd4 12. Nd2 Nd7 13. f4 Bh4 14. Nf3 Qf6 15. f5 O-O-O 16. Qc2 Ne5 {Vertes,A (2351)-Westerman,H (2279) ICCF 2006 1/2-1/2}) 5... c6 (5... e6 6. g4 (6. Qd3 c6 7. Be2 Be7 8. O-O O-O 9. Bg5 Nbd7 10. Rfe1 h6 11. Bh4 Bg6 12. Qe3 Qb6 13. e5 dxe5 14. Nxe5 Nxe5 15. dxe5 Qxe3 16. fxe3 Nd5 17. Bxe7 {1/2-1/2 (17) Kazmierczuk,Z-Lanzani,P ICCF 2006}) (6. Bd3 Be7 (6... Nbd7 7. Qe2 Be7 8. Be3 e5 9. g4 Bg6 10. O-O-O c6 11. Nh4 Nxe4 12. Bxe4 Bxh4 13. dxe5 Nxe5 14. f4 Bxe4 15. Nxe4 Ng6 16. Nxd6+ Kf8 17. Nxf7 Qe7 18. Nd6 {Fernandez Gonzales,G (1625)-Bordon,S ICCF 2020 1-0 (26)}) 7. g4 Bg6 8. d5 (8. h4 d5 9. exd5 Nxd5 10. Ne4 Nd7 11. c4 Nb4 12. Bb1 h5 13. g5 Nc6 14. b3 Bf5 15. Bb2 Bg4 16. Qd3 Nf8 17. Ned2 Ng6 18. Qe3 O-O 19. Be4 Bd6 { Koutsomichalis,M (1913)-Marcuzzo,G (1999) ICCF 2017 0-1 (48)}) (8. g5 Nfd7 9. Be3 c5 10. h4 Bh5 11. Be2 Qb6 12. d5 Na6 13. Qd2 Nc7 14. O-O-O exd5 15. Nxd5 Nxd5 16. Qxd5 Qc6 17. Qd3 O-O 18. Bf4 Rad8 19. Bg3 f6 {Campani,P (2176) -Ottolini,G (2262) ICCF 2020 1/2-1/2 (45)}) 8... exd5 9. exd5 c6 10. Bf4 O-O 11. O-O Bxd3 12. Qxd3 Na6 13. dxc6 Nc5 14. c7 Qxc7 15. Qc4 Rfc8 16. Rfe1 Qd7 17. Qe2 Bf8 {Pheby,I (2387)-Tarmak,M (1984) ICCF 2011 1-0 (55)}) (6. d5 exd5 ( 6... Nbd7 7. Be3 exd5 8. exd5 Be7 9. g4 Bg6 10. Bd3 Nb6 11. O-O O-O 12. Re1 Nfd7 13. Bxg6 hxg6 14. b3 Bf6 15. Nd4 c5 16. dxc6 bxc6 17. Ne4 c5 18. Nxf6+ { Siikaluoma,A (2396)-Pligin,S (2352) ICCF 2008 1/2-1/2 (29)}) (6... e5 7. Qe2 ( 7. g4 Bg6 8. Qe2 h6 9. Nh4 Bxe4 10. Nxe4 Nxe4 11. Ng6 fxg6 12. Qxe4 Qf6 13. Bd3 Nd7 14. Qxg6+ Qxg6 15. Bxg6+ Kd8 16. O-O Be7 17. f4 Bf6 18. g5 Be7 {Lindberg,W (1923)-Gromov,S (2276) ICCF 2015 1/2-1/2 (45)}) 7... Bg6 8. Qb5+ Nbd7 9. Bd3 Qc8 10. Nh4 a6 11. Qa5 Nc5 12. O-O Be7 13. Be3 O-O 14. Nxg6 fxg6 15. Rad1 g5 16. Bxg5 Nxd5 17. Nxd5 Bxg5 18. Qxc7 {Sousa,C (2132)-Parente,A (1757) ICCF 2012 1-0 (71)}) 7. exd5 Be7 8. Bd3 O-O 9. g4 Bg6 10. g5 Nfd7 11. Bxg6 fxg6 12. Nd4 Qc8 13. Ne6 Rf7 14. Be3 Nf8 15. Nxf8 Bxf8 16. Qe2 c5 17. O-O-O Qf5 { Ruokokoski,H-Lagergren,H (2012) ICCF 2014 1-0 (70)}) (6. Bf4 c6 7. Qe2 Nbd7 8. O-O-O Bg6 9. Qe3 Be7 10. Kb1 Nb6 11. Nd2 d5 12. e5 Nfd7 13. Be2 Rc8 14. Qg3 c5 15. Nf3 cxd4 16. Nxd4 Bh4 17. Qe3 Nc4 {Deneuville,C (2298)-Fister,B (2235) ICCF 2008 1/2-1/2 (27)}) (6. Be2 Be7 7. O-O O-O 8. Bf4 c6 9. e5 dxe5 10. Nxe5 Bxe2 11. Nxe2 Nbd7 12. c4 c5 13. Qc2 cxd4 14. Nxd4 Nxe5 15. Bxe5 Bd6 16. Qe2 Bxe5 17. Qxe5 Rc8 {Dojcinovic,M (1773)-Svítil,R (1763) ICCF 2013 1-0 (70)}) 6... Bg6 7. Qe2 d5 8. exd5 Nxd5 9. Ne5 Bb4 10. Bg2 Nxc3 {0-1 (10) Tikhobaev,A (2266)-Mondry,M (2175) ICCF 2012}) 6. Qe2 e6 7. g4 Bg6 8. h4 (8. Bg2 d5 9. exd5 Nxd5 10. Nxd5 (10. h4 h5 11. Ne5 Bh7 12. gxh5 Nd7 13. Nxd5 cxd5 14. c4 Nxe5 15. Qxe5 Bd3 16. cxd5 Bb4+ 17. Bd2 Qa5 18. Qe3 Bc4 19. dxe6 Bxe6 20. a3 Bxd2+ 21. Qxd2 Qb5 {Gardner,A (2243)-Brotherton,T (2209) ICCF 2019 1-0 (32)}) 10... cxd5 11. Ne5 {0-1 (11) Maduekwe,C (2416)-Yvinec,J (2349) ICCF 2008}) 8... h5 (8... h6 9. h5 Bh7 10. g5 hxg5 11. Nxg5 (11. Bxg5 Be7 12. h6 gxh6 (12... g6 13. O-O-O Nbd7 14. Kb1 O-O 15. Bh3 Ne8 16. Rhg1 Bxg5 17. Nxg5 Qe7 18. f4 Nc7 19. Nf3 Rfe8 20. f5 exf5 21. Bxf5 Kh8 22. Qg2 Rg8 23. Bxd7 Qxd7 24. e5 {Nolan,R-Wright,D (1618) ICCF 2015 1-0 (46)}) 13. Rxh6 Ng4 14. Bxe7 Qxe7 15. Rh4 Nf6 16. e5 dxe5 17. dxe5 Nd5 18. Ne4 Qb4+ 19. c3 Qe7 20. c4 Qb4+ 21. Kd1 O-O 22. cxd5 Qa4+ { Pennella,D (1802)-Mironik,P (1576) ICCF 2018 1-0}) 11... d5 12. e5 (12. Nxh7 Rxh7 13. e5 Ng8 14. Be3 Rh8 15. O-O-O b5 16. Qf3 b4 17. Ne2 a5 18. Nf4 Nh6 19. Bd3 a4 20. Rhg1 Na6 21. Qh3 Qd7 22. Kb1 Nc7 23. Ne2 Nb5 {Müller,K (1816) -Vinciguerra,R (1975) ICCF 2015 1-0 (50)}) 12... Nfd7 13. Nxh7 Rxh7 14. Bf4 ( 14. Qd3 Rh8 15. f4 Na6 16. Be3 Qa5 17. a3 Nb6 18. f5 Nc7 19. Kf2 Nc4 20. Bc1 Bb4 21. Nb1 exf5 22. b3 Nxe5 23. dxe5 Bc5+ 24. Ke2 Ne6 25. Kd1 Bd4 { Blazejová-Vasic,J (2225)-Pasta,P (2199) ICCF 2020 1-0 (54)}) 14... c5 15. dxc5 Nc6 16. O-O-O Qa5 17. Bg2 Nxc5 18. Kb1 Na4 19. Nxa4 Qxa4 20. Be3 {Vleer,H (2128)-Pasta,P (2175) ICCF 2019 1/2-1/2 (56)}) 9. g5 Nfd7 10. a3 (10. Bh3 Be7 11. O-O (11. d5 cxd5 12. exd5 e5 13. Be3 O-O (13... Na6 14. Qb5 Rc8 15. Bxa7 ( 15. O-O-O Nac5 16. Nxe5 a6 17. Qe2 dxe5 18. d6 Bf8 19. Bd4 Ne6 20. Bxe5 Rc5 21. Bf4 Bf5 22. b4 Bxh3 23. Rxh3 {1-0 (23) in 't Veld,H (2223)-Heinemann,C (2234) ICCF 2019}) 15... Nac5 16. b4 Na6 17. Bb6 Nc7 18. Qa4 Bxc2 19. Qxc2 Nxb6 20. Bxc8 Qxc8 21. Qd3 Qg4 22. a3 O-O 23. Rg1 Qc8 24. Kd2 f5 25. gxf6 {Salati,P (2258)-Bolignano,G (2302) ICCF 2016 1/2-1/2 (47)}) 14. O-O-O Na6 (14... Nb6 15. Nd2 Qc7 16. Nde4 Qc4 17. f3 Qxe2 18. Nxe2 Nc4 19. Bf2 Nb6 20. N4g3 f6 21. f4 fxg5 22. hxg5 exf4 23. Be6+ Bf7 24. Nf5 Bxe6 25. Nxe7+ Kf7 26. Nxf4 {Gutiérrez Dopino,J (2194)-Benes,J (2217) ICCF 2017 1-0 (38)}) 15. Nd2 Nb4 (15... Ndc5 16. Rhe1 b5 (16... Re8 17. Qc4 Rb8 18. a4 Qa5 19. Bxc5 b5 20. Nb3 Qxa4 21. Nxa4 bxc4 22. Na5 dxc5 23. d6 Nb4 24. Bd7 Bxc2 25. Bxe8 Rxe8 26. Nxc5 Bxd1 27. Rxd1 Bxd6 28. Rxd6 {Seidel,M (2174)-Bee,M ICCF 2004 1-0 (31)}) 17. f4 b4 18. Nb5 Qa5 19. f5 Bh7 20. Kb1 Rfb8 21. g6 fxg6 22. Nxd6 Bxd6 23. Nc4 Qc7 24. fxg6 Bxg6 25. Rg1 Bh7 26. Bh6 Bf8 27. d6 Qb7 28. Nxe5 b3 29. Qc4+ Kh8 30. axb3 Nxb3 31. Nf7+ Kg8 32. Nd8+ {1-0 (32) Konstantinov,M-Ambirk,J (2051) ICCF 2013 1 d4 d6: Tartakower System-and Modern Defence}) (15... Nac5 16. Rhf1 (16. Rhe1 Re8 17. Nc4 a6 18. f4 exf4 19. Bxf4 Nb6 20. Nxd6 Bxd6 21. Qxe8+ Qxe8 22. Rxe8+ Rxe8 23. Bxd6 Ne4 24. Nxe4 Rxe4 25. b3 Rxh4 26. Bf1 Nd7 27. Bg2 {Babychuk,V (2229) -Pasta,P (2123) ICCF 2016 1-0 (46)}) (16. f4 exf4 17. Bxf4 Re8 18. Rhe1 Nb6 19. Qf3 Nba4 20. Nxa4 Nxa4 21. Be3 Rc8 22. Bxc8 Qxc8 23. c4 b5 24. Bd4 Nb6 25. Bxb6 axb6 26. Re3 bxc4 27. Rde1 Qd7 {Del Lungo,P (2231)-Bolignano,G (2302) ICCF 2016 1/2-1/2 (83)}) 16... b5 17. Qxb5 Rb8 18. Qe2 Rb4 19. f4 exf4 20. Rxf4 Rxf4 21. Bxf4 Re8 22. Re1 f6 23. Qg2 fxg5 24. hxg5 Rf8 25. Be3 Kh7 26. Nf3 Ne5 27. Nh4 {Figueredo Company,J (2192)-Lanin,B (2039) ICCF 2015 1-0 (51)}) (15... Qc7 16. Kb1 (16. Nde4 Nac5 17. Ng3 b5 18. Nf5 Bxf5 19. Bxf5 g6 20. Bxd7 Nxd7 21. Nxb5 Qb7 22. b3 Rfc8 23. Kb2 a6 24. Nc3 Rc7 25. Ne4 a5 26. a3 Rb8 27. Qd3 Bf8 28. c4 Rd8 29. Ka2 Qa6 30. Rc1 Bg7 31. f3 Rdc8 32. Rc3 Bf8 33. Rhc1 Rd8 34. f4 exf4 35. Bd4 Bg7 36. Bxg7 Kxg7 37. Qd2 Qb6 38. Qxf4 Qd4 39. Qxd6 Rdc8 40. Nf6 Ne5 41. Ne8+ Rxe8 42. Qxc7 Nd3 43. Qh2 Nxc1+ 44. Rxc1 Qd3 45. Qb2+ Kh7 46. Qc3 Re2+ 47. Ka1 Qf5 48. Qf6 Qd7 49. Rb1 Qe8 50. c5 a4 51. bxa4 Re3 52. Ka2 { 1-0 (52) Grobler,D (2247)-Pastor Alonso de Prado,A (2255) ICCF 2018 1 d4 d6: Tartakower System-and Modern Defence}) (16. f4 exf4 17. Bxf4 Rae8 18. Qc4 Nb6 19. Qd4 Nc5 20. Kb1 a6 21. Rc1 Nbd7 22. Rhe1 b5 23. b4 Nb7 24. Re3 Bd8 25. Nce4 Re7 26. a3 Rfe8 27. Rce1 Nb6 {Kobas,M (2309)-Lins,P (2252) ICCF 2015 1/2-1/2 (38)}) 16... b5 17. Nb3 Nb4 18. Rd2 Rab8 19. Rc1 Nb6 20. Bxb6 Qxb6 21. Rf1 a5 22. f4 a4 23. Nc1 exf4 24. Rxf4 Na6 25. Bf5 Bxf5 26. Rxf5 g6 27. Qxe7 { Konstantinov,M (2313)-Lanin,B (2083) ICCF 2014 1-0 (45)}) 16. Qb5 Bxc2 17. Qxb4 Bxd1 18. Rxd1 Qc7 19. Kb1 f5 20. gxf6 Bxf6 21. Be6+ Kh8 22. Qe4 Nc5 {Lackner, J-Jacques,G ICCF 2016 1-0 (26)}) (11. Be3 d5 12. Nd2 Na6 (12... Qa5 13. O-O Nb6 14. f4 dxe4 15. Ncxe4 Bf5 16. Nb3 Qa6 17. Qf3 N8d7 18. Bxf5 exf5 19. Nec5 Bxc5 20. Nxc5 Nxc5 21. dxc5 Nd5 22. Bd4 O-O 23. Qxh5 Rae8 24. Bxg7 {Krutous,A (2080) -Fischer,R (2052) ICCF 2012 1-0}) (12... Bb4 13. O-O O-O 14. f4 Bxc3 15. bxc3 dxe4 16. f5 exf5 17. Bxf5 Bxf5 18. Rxf5 Qe7 19. Raf1 Qe6 20. R5f4 Nb6 21. Rxe4 Qg6 22. Re7 N8d7 23. Bf4 f6 24. Qd3 {Klim,A (2119)-Lins,P ICCF 2012 1/2-1/2 (45)}) 13. f4 dxe4 14. Ndxe4 Qa5 15. O-O Bf5 16. Bxf5 Qxf5 17. Qg2 Nb4 18. a3 Nd5 19. Nxd5 Qxd5 20. f5 exf5 21. Nc3 Qxg2+ {Torres Dominguez,D-Aguiló Benejam, A ICCF 2005 0-1 (28)}) 11... O-O (11... Na6 12. Rd1 Qb6 13. a4 Nb4 14. d5 cxd5 15. exd5 e5 16. a5 Qa6 17. Nb5 Rc8 18. c4 Bc2 19. Bd2 Bd3 20. Qe3 Rxc4 21. b3 Rc2 22. Bxd7+ Kxd7 23. Bxb4 {Grecu,N-Vasile,C (2094) ICCF 2019 1-0 (30)}) 12. Ne1 d5 13. Nd3 dxe4 14. Nf4 (14. Nxe4 c5 15. dxc5 Nc6 16. c3 Bxe4 17. Qxe4 Nxc5 18. Nxc5 Bxc5 19. Bf4 Qe7 {Kudryavtsev,N (2321)-Varonen,H (1878) ICCF 2021}) 14... Bf5 15. Nxe4 g6 16. Bg2 Na6 17. Be3 Qc7 18. c3 Rfe8 19. Rfe1 Rad8 20. Rad1 Bg4 21. Bf3 Bf5 {Marks,R (2336)-Clark,S (1982) ICCF 2019 1-0 (35)}) (10. Bf4 Na6 (10... Be7 11. O-O-O O-O 12. Qe3 Nb6 13. Bd3 N8d7 14. Rhe1 c5 15. Bg3 c4 16. Bf1 Re8 17. Bg2 d5 18. Ne5 Nxe5 19. dxe5 Bb4 20. exd5 Bxc3 21. dxe6 Bxb2+ 22. Kxb2 {Verde,P (2470)-Bristol,M (2123) ICCF 2011 1-0 (104)}) (10... b5 11. a3 Be7 12. Bg2 O-O 13. Nd2 a5 14. Bf3 Na6 15. Bxh5 b4 16. Na4 Bxh5 17. Qxh5 c5 18. d5 Nc7 19. c4 bxc3 20. Nxc3 Nb6 21. Bg3 exd5 22. exd5 {Denisov,T (2234) -Trs,J (2210) ICCF 2015 1-0 (50)}) 11. O-O-O Be7 12. Bg2 O-O 13. Kb1 Rc8 14. Nd2 b5 15. Bf3 b4 16. Na4 Qa5 17. b3 Qb5 18. Bxh5 Nc7 19. Nc4 d5 20. Bxg6 dxc4 21. Qg4 c5 {Biedermann,K (2065)-Deneuville,C (2221) ICCF 2012 1-0 (32)}) (10. Bg2 Be7 (10... Qb6 11. Nd2 Qxd4 12. Nb3 Qb6 13. f4 Qa6 14. Qf2 f5 15. Nd4 Kf7 16. Qe3 fxe4 17. Bxe4 Bxe4 18. Nxe4 Qa5+ 19. Bd2 Qd5 20. O-O c5 21. Nb5 Na6 22. c4 {Kruis,R-Holscher,P (2213) ICCF 2005 1-0}) 11. Be3 d5 12. Nd2 Na6 13. a3 Nc7 14. f4 (14. O-O-O b5 15. f4 O-O 16. Rhf1 dxe4 17. Bxe4 a5 18. Bxg6 fxg6 19. Nce4 Nd5 20. Nf3 Qc7 21. Ne5 Nxe5 22. fxe5 b4 23. a4 Rxf1 24. Rxf1 c5 25. dxc5 Nxe3 {Karpanov,V (2257)-Bolignano,G (2326) ICCF 2014 1-0 (43)}) 14... O-O 15. Rf1 dxe4 16. Bxe4 Bxe4 17. Ncxe4 g6 18. O-O-O b5 19. Nf3 Qc8 20. Ne5 Nd5 21. Bg1 b4 {Camacho Domínguez,F (2214)-Piñeiro Kremer,P ICCF 2014 1-0 (59)}) (10. Bd2 Be7 11. Qe3 Qc7 12. O-O-O Nb6 13. Kb1 (13. Bd3 N8d7 14. Ne1 O-O-O 15. a4 a5 16. f4 Bh7 17. Kb1 e5 18. b3 exd4 19. Qxd4 f6 20. Ne2 c5 21. Qf2 c4 22. Nc3 Qc5 23. Be3 Qc6 24. bxc4 Nc5 {Miksovský,J (2090)-Micek,J (2065) ICCF 2017 1-0 (39)} ) 13... N8d7 14. Ne1 d5 15. Bd3 dxe4 16. Bxe4 Nc4 17. Qe2 Nxd2+ 18. Rxd2 Bxe4 19. Nxe4 O-O-O 20. Nd3 Kb8 21. Qf3 Rdf8 {Tkachenko,I (2266)-Bonoldi,F (1949) ICCF 2012 1-0 (41)}) 10... Be7 11. Be3 (11. Bg2 d5 12. Bf4 a5 13. O-O O-O 14. Rfe1 Re8 15. Bg3 Na6 16. Qd1 Nc7 17. Bf1 b5 18. Bd3 dxe4 19. Bxe4 Bxe4 20. Nxe4 Nd5 21. a4 g6 {Rooms,T (2324)-Bonoldi,F (1949) ICCF 2012 1-0 (53)}) 11... d5 12. Bg2 dxe4 13. Nd2 Qc7 14. O-O-O Na6 {Baron,M-Gravelle,G ICCF 2016 1-0 (29)}) (3. g3 Bxf3 4. exf3 Nf6 5. Bg2 Nc6 (5... g6 6. f4 c6 7. O-O Bg7 8. Be3 Qd7 9. Nc3 O-O 10. b4 Na6 11. Ne4 Nxb4 12. c3 Nbd5 13. Nxf6+ Bxf6 14. Bd2 b5 15. Bf3 Nb6 16. d5 Nxd5 17. Qc1 {Anderson,L (1343)-Groenhout,R (1792) ICCF 2013 0-1 (31)}) 6. f4 e6 7. O-O Be7 8. Re1 O-O 9. c3 Qd7 10. a4 h5 11. Nd2 a6 12. Nf3 g6 13. Bh3 Qe8 14. f5 gxf5 {Baigorri Navarro,F (2020)-Domenche Redondo,F (1884) ICCF 2016 1-0 (41)}) (3. e3 Nd7 (3... Nf6 4. Nc3 (4. Nbd2 e6 5. Be2 Bh5 6. O-O Be7 7. c4 c5 8. Qb3 Qb6 9. h3 Qxb3 10. axb3 Nc6 11. g4 Bg6 12. Re1 a6 13. Nf1 Nb4 14. Rd1 Bc2 15. Re1 h5 {Fenby,J-Ellis,L (2302) ICCF 2012 0-1 (31)}) (4. Bd3 e5 5. h3 Bxf3 6. Qxf3 e4 7. Bxe4 d5 8. Bd3 c6 9. b3 Be7 10. Nd2 Nbd7 11. O-O Qc7 12. Bb2 O-O-O 13. a4 h6 14. Bc3 g5 15. b4 Kb8 {Crooker,J-Wright,D (1618) ICCF 2015 0-1 (53)}) (4. Be2 g6 5. h3 Bxf3 6. Bxf3 c6 7. c4 Nbd7 8. Nc3 Bg7 9. e4 O-O 10. Be3 Qa5 11. O-O Qb4 12. Qb3 Qxb3 13. axb3 a6 14. b4 e5 15. d5 cxd5 { Rowley,M (1718)-Boswell,G (1919) ICCF 2015 1/2-1/2}) 4... Nbd7 (4... g6 5. Bd3 Bg7 6. h3 Bxf3 7. Qxf3 c6 8. O-O O-O 9. Rd1 Nbd7 10. Bd2 Qc7 11. Ne2 e5 12. a4 Qb6 13. Bc3 Rae8 14. e4 d5 15. dxe5 Nxe5 16. Bxe5 {Moore,A-Göbel,M (1526) ICCF 2014 1-0 (32)}) 5. Be2 c6 6. e4 Bxf3 7. Bxf3 e5 8. Be3 exd4 9. Bxd4 Be7 10. O-O O-O 11. Qd2 Re8 12. Rfe1 Ne5 13. Bxe5 dxe5 14. Qe2 Bb4 15. Red1 {Davis,J (1630) -Wright,D (1613) ICCF 2013 1/2-1/2}) (3... e6 4. h3 Bh5 5. e4 Nf6 6. Bd3 h6 7. c3 Nbd7 8. O-O Be7 9. Nbd2 c6 10. e5 dxe5 11. dxe5 Nd5 12. g4 Bg6 13. Bxg6 fxg6 14. Ne4 Qc7 15. c4 {Nikolaev,A-Disque,P ICCF 2013 0-1 (45)}) 4. Be2 (4. Nbd2 e5 5. c3 c6 6. Qc2 Ngf6 7. e4 Be7 8. Bd3 O-O 9. O-O Qc7 {0-1 (9) Thistlewood,A (1636)-Dudeney,P (2128) ICCF 2020}) (4. c4 e5 5. Nbd2 Ngf6 6. Bd3 (6. Qb3 Rb8 7. Bd3 Bxf3 8. gxf3 Be7 9. Ne4 Nxe4 10. Bxe4 O-O 11. Bd2 f5 12. Bc2 exd4 13. exd4 Bh4 14. O-O Qf6 15. Qd3 Rbe8 16. Kh1 Kh8 17. Bc3 Qh6 {Wood,B-Gyger,T ICCF 2006 0-1 (39)}) 6... Be7 7. b3 O-O 8. dxe5 Nxe5 9. Be2 Nxf3+ 10. Nxf3 Ne4 11. Qd4 f5 12. h3 Bh5 13. Bb2 Bf6 14. Qd5+ Bf7 15. Qxf5 Bxb2 {Cangelosi,D (1845) -Moujan,P (1948) ICCF 2017 1/2-1/2 (30)}) (4. Bc4 Ngf6 5. Ng5 e6 6. Be2 (6. Nf3 d5 7. Be2 Bd6 8. O-O c6 9. Ne1 Bf5 10. f4 Qc7 11. Nf3 O-O-O 12. c4 dxc4 13. Bxc4 Ne4 14. Qe2 Ndf6 15. a3 h6 16. b4 Rdg8 17. b5 g5 {Muhonen,K (1671) -Mikkonen,M (1869) ICCF 2020 0-1}) 6... Bxe2 7. Qxe2 Be7 8. Nc3 c5 9. dxc5 Nxc5 10. Qb5+ Nfd7 11. Nf3 O-O 12. O-O d5 13. b4 a6 14. Qe2 Ne4 15. Nxe4 dxe4 { Linga,V-Fuller,W ICCF 2009 0-1 (29)}) 4... Ngf6 (4... e6 5. c4 Ngf6 6. Nc3 Be7 7. O-O O-O 8. e4 c6 9. h3 Bh5 10. Be3 Bg6 11. Bd3 Qc7 12. Qc2 h6 13. Rfe1 Rfe8 14. a3 Rad8 15. Rac1 a6 16. b4 {Mason,I (2290)-Brotherton,T (2209) ICCF 2019 1-0 (36)}) 5. O-O (5. h3 Bxf3 6. Bxf3 c6 7. O-O e6 8. Nd2 d5 9. b3 Bd6 10. Bb2 O-O 11. Re1 e5 12. e4 dxe4 13. Nxe4 Nxe4 14. Bxe4 f5 15. dxe5 Nxe5 16. Bd5+ cxd5 {Price,D (2030)-McIntee,C (1758) ICCF 2008 1-0}) 5... e6 6. b3 Be7 7. Bb2 O-O 8. Nbd2 c5 9. c4 d5 10. Ne5 Bxe2 11. Qxe2 Nxe5 12. dxe5 Nd7 13. Rad1 Qc7 14. f4 Nb6 {Stuart,P-Hart,T ICCF 2008 1/2-1/2 (51)}) (3. h3 Bxf3 4. gxf3 e6 5. Nc3 (5. c4 c6 6. e4 g6 7. Nc3 Nd7 8. Be3 Bh6 9. h4 Bxe3 10. fxe3 Qe7 11. f4 O-O-O 12. Qe2 h5 13. O-O-O Kb8 14. Bg2 Nh6 15. Kb1 Rhg8 16. a3 Nf6 { Fremmegaard,J (1990)-Gavrijski,D (2048) ICCF 2017 1-0 (42)}) 5... Nf6 6. Bg5 d5 7. e4 Be7 8. Qd2 Nc6 9. Bb5 Qd7 10. Bxc6 Qxc6 11. e5 Ng8 12. Bxe7 Nxe7 13. Rg1 Rg8 14. O-O-O {1-0 (14) Campani,P (1708)-Nanni,M ICCF 2013}) (3. Nc3 Bxf3 (3... e6 4. e4 Nc6 5. d5 exd5 6. exd5 Nb4 7. a3 Bxf3 8. Qxf3 Nxc2+ 9. Kd1 Nxa1 10. Bb5+ c6 11. dxc6 a6 12. cxb7+ axb5 13. Qc6+ {1-0 (13) Mircea,F (2156)-Gurgui,D ICCF 2011}) 4. gxf3 Nd7 (4... c6 5. Qd3 Nd7 6. e4 Ngf6 7. Bd2 g6 8. O-O-O Bg7 9. f4 d5 10. e5 Ng4 11. Be1 e6 12. Kb1 Qc7 13. f5 exf5 14. f3 Nh6 15. Qe3 O-O-O 16. Bg3 {Grabarchuk,N (2244)-Kireev,V (2162) ICCF 2012 1/2-1/2 (82)}) 5. e4 g6 6. Be3 Bg7 7. Qd2 c6 8. O-O-O (8. h4 h5 9. O-O-O Qc7 10. Kb1 O-O-O 11. Bc4 Nh6 12. Bg5 Nb6 13. Bb3 Kb8 14. a4 Nc8 15. d5 c5 16. Nb5 Qd7 17. Rhg1 Rde8 18. Na3 Ng8 19. a5 a6 {Baranov,N (2050)-Lanin,B (2096) ICCF 2014 1/2-1/2 (34)}) 8... Ngf6 9. h4 b5 10. Ne2 O-O 11. Ng3 h5 12. Bh6 e6 13. Rg1 Rb8 14. Bd3 Qb6 { Lukashevich,K-Kireev,V (2162) ICCF 2012 1-0 (39)}) (3. Nbd2 Nd7 4. e4 (4. h3 Bh5 5. g4 Bg6 6. Bg2 e5 7. dxe5 dxe5 8. e4 h6 9. Qe2 Bd6 10. Nc4 Qe7 11. Nxd6+ Qxd6 12. Nh4 Bh7 13. Nf5 Qf6 14. O-O O-O-O 15. Be3 Bxf5 {Saba,N (1561)-Evans,S (1738) ICCF 2014 0-1 (36)}) 4... Ngf6 5. Bd3 e5 6. c3 c6 7. h3 Bh5 (7... Bxf3 8. Nxf3 Be7 9. O-O O-O 10. Bc2 Qc7 11. Qe2 Rfe8 12. Re1 a5 13. Bd2 Bf8 14. Rad1 {Züger,A (1806)-Ørvad Markussen,B ICCF 2017 0-1 (42)}) 8. O-O Be7 9. Re1 O-O 10. Nf1 Re8 11. Ng3 Bg6 12. a4 Bf8 13. dxe5 dxe5 14. Bc2 a5 {Gleyzer,L (2322) -O'Connell,C (2399) ICCF 2015 1-0 (67)}) (3. c3 Nd7 4. Nbd2 Ngf6 5. e4 e6 6. Be2 Be7 7. O-O O-O 8. h3 Bh5 9. Re1 h6 10. e5 dxe5 11. Nxe5 Bxe2 12. Qxe2 c5 13. dxc5 Bxc5 14. Nb3 Bd6 {Hoeven,J (2156)-Pligin,S (2446) ICCF 2009 0-1 (33)}) (3. Qd3 c6 4. e4 Nf6 5. Nbd2 Nbd7 6. Be2 e5 7. O-O Be7 8. b3 exd4 9. Qxd4 O-O 10. Bb2 Nc5 11. h3 Bh5 12. Rfe1 Re8 13. Bc4 b5 14. Bf1 a5 {Greig,S (2210) -Pasta,P (2199) ICCF 2020 1/2-1/2 (37)}) (3. Ng5 h6 4. Ne4 d5 5. Ng3 Nf6 6. c4 c5 7. h3 Bc8 8. e4 Nxe4 9. Nxe4 dxe4 10. d5 g6 11. g4 h5 12. Rg1 Bg7 13. Nc3 Bxc3+ 14. bxc3 Qa5 {Dam,J (2075)-Orlando,E (2059) ICCF 2019 0-1 (68)}) 3... Bxf3 (3... Nd7 4. Qb3 (4. e4 e5 (4... Bxf3 5. Qxf3 g6 6. Nc3 (6. Be3 Bg7 7. Qd1 c5 8. Nc3 cxd4 9. Bxd4 Bxd4 10. Qxd4 Ngf6 11. Be2 Qb6 12. Qd2 O-O-O 13. h3 Kb8 14. f4 Nc5 15. Bf3 Qa6 16. Qe2 Ne6 17. Nd5 Nd4 {Thistlewood,A (1647)-Dudeney,P (2138) ICCF 2020 0-1 (27)}) 6... Bg7 7. Qd3 c5 8. d5 Bd4 9. Be2 Ngf6 10. O-O O-O 11. Nb5 Be5 12. Be3 Bxb2 13. Rab1 Be5 14. f4 a6 15. Na3 Bd4 16. Rxb7 { Somogyi,J (2164)-Fraser,F (2186) ICCF 2010 1/2-1/2}) 5. h3 (5. Be2 Be7 6. Nc3 Bxf3 7. Bxf3 exd4 8. Qxd4 Bf6 9. Qd3 Ne5 10. Qe2 Nxf3+ 11. Qxf3 Ne7 12. O-O O-O 13. Qd3 Re8 14. Be3 Ng6 15. Nd5 b6 16. Bd4 Bxd4 {Domaraczenko,K (1835) -Recasens Sánchez,J (2094) ICCF 2013 1-0}) 5... Bh5 6. d5 Bg6 7. Bd3 h6 8. O-O Ngf6 9. Nc3 Be7 10. b4 O-O 11. b5 Nc5 12. Qe2 b6 13. Ba3 Nxd3 14. Qxd3 a6 15. bxa6 Rxa6 {Roberts,R (1529)-Wright,D (1618) ICCF 2015 1-0 (31)}) (4. g3 Bxf3 5. exf3 g6 6. Bg2 Bg7 7. O-O Nh6 8. g4 f5 9. Nc3 O-O 10. Qe2 f4 11. Qe6+ Kh8 12. Ne2 g5 13. b3 Re8 14. Rb1 c6 15. h4 Nf8 {Orlovtsev,A (2307)-Degtyaryov,S (2332) ICCF 2018 1/2-1/2 (54)}) 4... Rb8 (4... Qc8 5. e4 (5. Nbd2 Ngf6 6. h3 Bxf3 7. Qxf3 c6 8. e3 Qc7 9. Bd3 g6 10. O-O Bg7 11. Rb1 O-O 12. b4 e5 13. Bb2 d5 14. Qg3 Rfe8 15. a3 Qd8 16. cxd5 Nxd5 {Halme,O (2316)-Kauppinen,M (2261) ICCF 2005 0-1 (51)}) (5. h3 Bxf3 (5... Bh5 6. g4 Bg6 7. Bg2 c6 8. Nc3 h6 9. Bf4 Ngf6 10. O-O e6 {0-1 (10) Yeke,S-Kauppinen,M (2260) ICCF 2007}) 6. Qxf3 g6 7. Nc3 Bg7 8. Qd3 e5 9. d5 Qd8 10. g4 Bh6 11. e3 Bg5 12. Bg2 a6 13. b4 h5 14. Qe2 a5 15. b5 Qe7 16. Bb2 hxg4 {Antonov,N-Fuller,W ICCF 2009 0-1 (38)}) 5... Bxf3 6. Qxf3 e5 7. d5 Ngf6 8. Bd3 h6 9. Nc3 Be7 10. O-O O-O 11. Qh3 Nc5 12. Qxc8 Raxc8 13. Bc2 a6 14. b4 Ncd7 15. f3 Nh7 16. Ba4 {Roberts,R (1529)-Wright,D (1618) ICCF 2015 0-1 (48)}) (4... c5 5. d5 g6 6. Nc3 Bg7 7. Nd2 Nb6 8. e4 Nf6 9. h3 Bc8 10. Be2 O-O 11. Nf3 e6 12. dxe6 Bxe6 13. a4 Re8 14. O-O Bc8 15. Bd3 Nbd7 16. Bf4 { Caliò,M (2115)-Hjorth,J (2146) ICCF 2014 1-0 (55)}) 5. g3 (5. Be3 g6 6. h3 Bxf3 7. exf3 Bg7 8. Nc3 a6 9. O-O-O Ngf6 10. h4 c6 11. g4 h6 12. c5 b5 13. cxd6 exd6 14. Re1 Kf8 15. Kb1 c5 16. dxc5 Nxc5 {Bieker,P (1979)-Bonoldi,F (1939) ICCF 2012 1-0 (45)}) (5. h3 Bxf3 6. Qxf3 g6 7. Nc3 (7. Qa3 Bg7 8. e3 c5 9. d5 a6 10. Nc3 Ngf6 11. Qb3 O-O 12. a4 e6 13. dxe6 fxe6 14. Be2 Ne5 15. O-O Qc7 16. f4 Nc6 17. Bd2 Qd7 18. g4 d5 {Ringsborg,A (2360)-Pligin,S (2352) ICCF 2008 1/2-1/2 (41)}) 7... Bg7 8. e3 c5 9. d5 Bxc3+ 10. bxc3 Ngf6 11. Qd1 O-O 12. Be2 Ne4 13. Qc2 f5 14. O-O Qe8 15. Kh2 e6 16. f3 Nef6 {Sichler,R (2195)-Niese,P (2333) ICCF 2010 1/2-1/2 (43)}) 5... g6 6. Nbd2 Bg7 7. Bg2 c5 8. e3 cxd4 (8... Ngf6 9. O-O O-O 10. h3 Bxf3 11. Nxf3 e6 12. Qd3 d5 13. b3 Rc8 14. Bb2 Qa5 15. a3 dxc4 16. Qxc4 cxd4 17. Qxd4 Nh5 18. Qxd7 Bxb2 19. Ra2 Nf6 20. Qxb7 {Eriksson,R (2273)-Pligin,S (2446) ICCF 2009 1/2-1/2 (41)}) 9. Nxd4 Ne5 10. O-O Nf6 11. Qa4+ Qd7 12. Qxa7 O-O 13. Qb6 Bh3 14. a4 Rfc8 15. b3 {Kiselev,V (2314)-Kireev, V (2165) ICCF 2013 1/2-1/2}) (3... e5 4. Nc3 (4. dxe5 Nc6 5. Bg5 Be7 6. Bxe7 Ngxe7 7. exd6 cxd6 8. Nc3 O-O 9. e3 Qa5 10. Be2 Rad8 11. O-O d5 12. Qb3 dxc4 13. Qxc4 Bxf3 14. Bxf3 Ne5 15. Qe2 Nxf3+ {Sanjur,C (1872)-Lam,M ICCF 2014 1/ 2-1/2 (60)}) 4... Nd7 5. g3 (5. h3 Bxf3 6. exf3 Ne7 7. f4 exd4 8. Qxd4 Nc6 9. Qd3 g6 10. Be3 Bg7 11. Be2 O-O 12. O-O Nc5 13. Qd2 Ne7 14. b4 Ne6 15. Bg4 h5 16. Bxe6 fxe6 {Turczynski,M (2331)-Baranyuk,A (2249) ICCF 2013 1/2-1/2 (37)}) 5... c6 (5... Ngf6 6. Bg2 Be7 7. h3 Bxf3 8. exf3 O-O 9. O-O exd4 10. Qxd4 Nc5 11. f4 a5 12. Be3 c6 13. Rad1 Qc7 14. Rfe1 Rfe8 {0-1 (14) García Claro,K-Aiken, R (1985) ICCF 2013}) (5... Bxf3 6. exf3 Ne7 (6... exd4 7. Qxd4 Ngf6 8. Bg2 (8. g4 Nc5 9. Be3 Ne6 10. Qd2 c6 11. g5 Nd7 12. f4 Qa5 13. b4 Qxb4 14. Rb1 Qa5 15. Rxb7 Be7 16. Bh3 Qa6 17. Rxd7 Kxd7 18. O-O Qxc4 19. Rc1 h6 {Pacic,A (1937) -Recasens Sánchez,J (1986) ICCF 2017 1-0 (33)}) 8... Be7 9. O-O (9. g4 c6 10. g5 Nh5 11. f4 h6 12. h4 Qb6 13. Qxb6 Nxb6 14. b3 d5 15. Be3 d4 16. Bxd4 Nxf4 17. Bf3 hxg5 18. hxg5 Rxh1+ 19. Bxh1 Ne6 20. Bxb6 axb6 {Mitica,G (1769)-Vasile, C (2057) ICCF 2020 0-1 (37)}) 9... O-O 10. f4 c6 11. Re1 Re8 12. Be3 Ng4 13. Qd2 Nxe3 14. Rxe3 Bf8 15. Rxe8 Qxe8 16. Re1 Qd8 17. b4 Nf6 18. Qd4 {Trivedi,K (2046)-Recasens Sánchez,J (2080) ICCF 2013 1-0}) 7. Bg2 exd4 8. Qxd4 Nc6 9. Qd1 (9. Qe3+ Be7 10. O-O O-O 11. b3 Bf6 12. Bb2 a5 13. Qd2 Nc5 14. Nd5 Bxb2 15. Qxb2 Ne7 16. Ne3 f5 17. f4 c6 18. Rad1 Qc7 19. Qd2 Rad8 20. Rfe1 Nc8 {Boonet,G (2404)-Peeren,Y ICCF 2005 1/2-1/2 (68)}) 9... Be7 10. O-O O-O 11. Be3 (11. Re1 Re8 12. Nd5 Nb6 13. Bd2 Nxd5 14. cxd5 Ne5 15. f4 Nd7 16. Qc2 Nc5 17. b4 Nd7 18. Rac1 Rc8 19. Bh3 c5 20. dxc6 Rxc6 21. Qa4 Bf8 22. Qxa7 Rxe1+ {Lopez Lopez,M (1697)-Vahvaselkä,J ICCF 2010 1-0 (39)}) 11... Nb6 12. b3 Bf6 13. Rc1 Bxc3 14. Rxc3 Nd7 15. f4 Qf6 16. Rd3 Rfe8 17. Re1 a6 18. a3 Qg6 19. b4 Nf6 20. h3 h5 21. Kh2 Qf5 22. Qb3 Re7 23. Red1 Rae8 24. c5 dxc5 25. bxc5 Qc8 26. Bf3 Kh8 27. Bc1 Kg8 28. Bb2 Ne4 29. Qc2 h4 30. g4 f5 31. Rd5 Rf8 32. gxf5 Nf6 33. Bxf6 gxf6 34. Bh5 {1-0 (34) Webster,R (2252)-Dudeney,P (2136) ICCF 2019 1 d4 d6: Tartakower System-and Modern Defence}) (5... h6 6. Bg2 c6 7. h3 Bf5 8. e4 Bh7 9. Be3 Ngf6 10. Nh4 exd4 11. Bxd4 g6 12. Qc2 Bg7 13. O-O O-O 14. Rad1 Qe7 15. f4 Rfd8 16. Nf3 Nc5 17. Rfe1 {Jerkovic,L (2002)-Lagergren,H (1934) ICCF 2015 1-0 (46)}) 6. Bg2 Ngf6 (6... Qb6 7. d5 h6 8. Nd2 Ngf6 9. Nf1 Bf5 10. e4 Bh7 11. Ne3 Nc5 12. Qc2 Be7 13. O-O O-O 14. Rb1 a5 15. Nf5 Rfe8 16. Rd1 Rad8 17. b3 {Gromov,S (2241)-Kireev,V (2165) ICCF 2013 1-0 (63)}) (6... Be7 7. Be3 (7. O-O h6 8. h3 Bf5 9. e4 Bh7 10. Be3 Ngf6 11. Nh4 O-O 12. Nf5 exd4 13. Qxd4 Bxf5 14. exf5 Re8 15. Rfd1 Qa5 16. g4 Bd8 17. Bf4 Bb6 18. Qd2 Ne5 {Topolovec,F (2160)-Lins,P ICCF 2013 1/2-1/2 (58)}) 7... Ngf6 8. Qc2 O-O 9. h3 Bh5 10. O-O Ne8 11. Qd2 Qc7 12. Rad1 Rd8 13. d5 c5 14. g4 Bg6 15. Ng5 Ndf6 16. Nge4 a6 17. Ng3 Rb8 18. a4 { Hurn,R (2024)-Chorfi,K (2251) ICCF 2020 1/2-1/2 (42)}) 7. O-O h6 (7... Qb6 8. Be3 Qxb2 9. Qd3 Qa3 10. Rab1 Qa6 11. Ne4 Nxe4 12. Qxe4 f5 13. Qc2 Be7 14. c5 dxc5 15. dxe5 f4 16. Bxf4 O-O 17. Qb3+ Kh8 18. Qxb7 Qxa2 19. Nd2 {Schwenck,M (2510)-Johansen,J (2332) ICCF 2011 1-0 (41)}) 8. Re1 Be7 9. Qc2 Bxf3 10. dxe5 Bxg2 11. exf6 Nxf6 12. Kxg2 O-O 13. e4 Qa5 14. f3 Nd7 15. Bf4 {Pilkin,E (2193) -Macs,O (2060) ICCF 2014 1-0 (40)}) (3... g6 4. Qc2 (4. Nc3 Bg7 5. e4 (5. e3 c5 (5... Nc6 6. Be2 e5 (6... Nh6 7. h3 Bxf3 8. Bxf3 O-O 9. O-O Qe8 10. a3 e5 11. Re1 f5 12. d5 Na5 13. Be2 b6 14. Nb5 c6 15. Nc7 Qb8 16. Nxa8 Qxa8 17. b4 Nb7 18. dxc6 {Greco,T-Moujan,P (2064) ICCF 2018 1-0 (49)}) 7. d5 (7. Nxe5 Bxe2 ( 7... dxe5 8. Bxg4 exd4 9. exd4 Nxd4 10. O-O Ne7 11. Bg5 f6 12. Be3 Nec6 13. Re1 O-O 14. Bf3 Nxf3+ 15. Qxf3 Rf7 16. Rad1 Qf8 17. Bf4 Re8 18. Qd5 Rxe1+ 19. Rxe1 {Andersen,H-Wettering,G (1782) ICCF 2007 1-0 (35)}) 8. Qxe2 dxe5 9. d5 Nce7 10. e4 c6 11. f4 cxd5 12. cxd5 a6 13. O-O Nc8 14. Bd2 Nd6 15. Na4 b5 16. Nc5 Nc4 17. Bc3 Nh6 18. a4 Qb6 {Cortigiani,M (2171)-Grippo,L (2235) ICCF 2015 0-1 (72)} ) 7... Nce7 8. e4 Nf6 (8... Bd7 9. O-O f5 10. exf5 Nxf5 11. c5 Nf6 12. Bc4 h6 13. Re1 O-O 14. c6 Bc8 15. cxb7 Bxb7 16. Qd3 Kh7 17. Bd2 c6 18. Rac1 cxd5 19. Nxd5 e4 20. Rxe4 {Ruggieri,O (2308)-Arnold,H (2357) ICCF 2006 0-1 (67)}) 9. Be3 (9. O-O O-O 10. Be3 Bd7 11. Qb3 b6 12. Ne1 Ng4 13. Bd2 f5 14. exf5 Bxf5 15. Nf3 Bd7 16. Ng5 Nf6 17. Rae1 Nf5 18. Bd3 Nd4 19. Qd1 h6 20. Ne6 Nxe6 {Terminali,G (2078)-Grippo,L (2198) ICCF 2012 0-1}) 9... Nd7 10. O-O O-O 11. h3 Bxf3 12. Bxf3 f5 13. Re1 b6 14. a4 a5 15. Ra3 Kh8 16. Qe2 Ng8 17. exf5 {Caporali,D (2109)-Grippo,L (2235) ICCF 2015 0-1 (50)}) (5... Nd7 6. Be2 c5 (6... Ngf6 7. h3 Bxf3 8. Bxf3 a6 9. Bxb7 Ra7 10. Bf3 e5 11. O-O O-O 12. g3 exd4 13. exd4 c5 14. Be3 Qb6 15. Qd2 Rb8 16. b3 Ne8 17. Rad1 cxd4 18. Bxd4 {Gíslason,G (2003) -Marinelli,T ICCF 2012 1-0 (41)}) (6... c6 7. O-O Ngf6 8. e4 Bxf3 9. Bxf3 O-O 10. Be3 a6 11. b4 Qc7 12. a3 Rfc8 13. Rc1 e5 14. d5 c5 15. Be2 cxb4 16. axb4 Qd8 17. Qb3 Qf8 18. g4 {Khazagarov,Y-Lautenbach,W (2236) ICCF 2012 1-0 (39)}) ( 6... e6 7. h3 Bxf3 8. Bxf3 c6 9. O-O Ne7 10. Ne4 Qc7 11. b3 d5 12. Ng3 O-O 13. Qc2 c5 14. Bb2 cxd4 15. Bxd4 Bxd4 16. exd4 b5 17. Qc1 bxc4 18. bxc4 {Schulz,B (1929)-Recasens Sánchez,J (1956) ICCF 2019 1/2-1/2}) 7. h3 Bxf3 8. Bxf3 Rb8 9. O-O Ngf6 10. Rb1 O-O 11. b4 Qc8 12. bxc5 dxc5 13. Ba3 Re8 14. Qb3 b6 15. Nb5 a6 16. Na7 Qc7 17. Nc6 {Michael,D (2122)-Wiander,M ICCF 2008 1-0}) (5... Qc8 6. Be2 c5 7. O-O cxd4 8. Nxd4 Bxe2 9. Qxe2 Nc6 10. Nxc6 bxc6 11. Qc2 Nf6 12. Bd2 Qe6 13. Qa4 O-O 14. Rac1 Rfc8 15. b3 a5 16. Qa3 Ne4 17. Nxe4 {Riddell,R (1317) -Sosa Landa,H (1622) ICCF 2019 0-1 (36)}) (5... Bxf3 6. Qxf3 c6 7. Bd2 Qc7 8. O-O-O Nd7 9. g4 a6 10. h4 h6 11. Be2 Rc8 12. Kb1 e6 13. Qg2 Ne7 14. h5 g5 15. Rhf1 Rf8 16. f4 gxf4 17. exf4 {Schlosser,R-Ipekyilmaz,E (1700) ICCF 2017 1-0 (44)}) 6. Be2 (6. dxc5 dxc5 7. Qxd8+ Kxd8 8. Ng5 Bxc3+ 9. bxc3 Ke8 10. h3 Bd7 11. Be2 Nf6 12. O-O h6 {0-1 (12) Bermúdez,S (2168)-Bjazevic,P (2202) ICCF 2007} ) 6... cxd4 (6... Qd7 7. O-O cxd4 8. exd4 Nh6 9. h3 Bxf3 10. Bxf3 Nf5 11. Bg4 O-O 12. Qd3 e6 13. Bxf5 exf5 14. Be3 Na6 15. a3 Rfc8 16. Rac1 Nc7 17. d5 Ne8 18. b4 {Halliwell,T (2315)-Rhodes,J (2397) ICCF 2017 1-0 (54)}) 7. exd4 Nh6 8. h3 (8. O-O Nf5 9. Be3 Nc6 10. d5 Bxf3 11. Bxf3 Nxe3 12. fxe3 Ne5 13. Qb3 O-O 14. Be2 a6 15. Ne4 Qa5 16. a4 Rac8 17. g4 Qc7 18. Rf4 Nd7 19. Raf1 b6 { Bagaoutdinov,A (2197)-Jensen,K (2140) ICCF 2016 0-1 (61)}) 8... Bxf3 9. Bxf3 Nc6 10. g4 Qd7 (10... O-O 11. Be3 f5 12. Qd2 f4 13. Bxf4 Nxd4 (13... Rxf4 14. Qxf4 Nxd4 15. O-O-O e5 16. Qe3 Qc7 17. Kb1 a6 18. Bd5+ Kh8 19. f4 Nf7 20. fxe5 dxe5 21. h4 Rc8 22. h5 Bh6 23. g5 {1-0 (23) Downs,R (1771)-Moran,R (1839) ICCF 2017}) 14. Be4 Nf7 15. Be3 Nc6 16. f4 e6 17. O-O Rc8 18. Rac1 Re8 19. Bg2 Qa5 20. Kh1 d5 21. cxd5 exd5 22. Nxd5 {Skarba,S (2368)-Debevec,B (2314) ICCF 2009 1-0 (33)}) (10... Ng8 11. Be3 Nf6 12. Qb3 (12. Qe2 Rc8 13. O-O-O h5 14. Rhg1 hxg4 15. hxg4 Kf8 16. g5 Ne8 17. Bg4 Ra8 18. f4 Qa5 19. Kb1 Rb8 20. Rd2 Nc7 21. Nb5 Nb4 22. a3 Nbd5 23. f5 Nxe3 {Garnica,H (2348)-Cvetnic,V (2305) ICCF 2014 1-0 (32)}) 12... Rb8 13. O-O-O O-O 14. g5 Nd7 15. Kb1 Qc8 16. Bg4 Re8 17. f4 e6 18. Nb5 Bf8 19. d5 Na5 20. Qc2 Qxc4 21. Qxc4 Nxc4 22. Bxa7 {Boudy Bueno,J (1798)-Thau,O (1728) ICCF 2015 1-0 (25)}) 11. Be3 f5 12. Be2 O-O 13. Qd2 g5 14. f3 f4 15. Bf2 e5 16. dxe5 Nxe5 17. O-O-O Nhf7 18. h4 Qe6 19. b3 gxh4 20. Bxh4 Ng6 21. Nd5 Qe5 22. Qc2 Nxh4 23. Rxh4 Ng5 24. Rhh1 h6 25. Rhf1 a5 26. Bd3 a4 27. bxa4 Rfe8 28. Rd2 Qa1+ 29. Qb1 Qxb1+ 30. Kxb1 Rxa4 31. Bc2 Ra3 32. Bb3 Kh7 33. Rd3 Ne6 34. Bc2 Rxd3 35. Bxd3+ Kh8 36. Bf5 Nd4 37. Nxf4 Nxf5 38. gxf5 Rc8 39. Ne6 Rxc4 40. Rg1 Bc3 41. Rg6 Kh7 42. Nf8+ Kh8 43. Ne6 Kh7 44. Nf8+ { 1/2-1/2 (44) Matheis,T (2375)-Bell,A ICCF 2008 1 d4 d6: Tartakower System-and Modern Defence}) (5. g3 Bxf3 (5... c6 6. Bg2 Qb6 7. e3 h5 8. h3 Bxf3 9. Qxf3 h4 10. g4 Nd7 11. Bd2 Qd8 12. O-O-O Nb6 13. Qe2 Qc7 14. Kb1 Nf6 15. Rc1 e6 16. g5 Nfd7 17. f4 {Vlasov,A (2224)-Avellán,G (2233) ICCF 2014 1-0 (49)}) 6. exf3 e6 7. d5 (7. Bg2 Ne7 8. O-O O-O 9. d5 exd5 10. Nxd5 Nxd5 11. cxd5 Re8 12. Be3 Qd7 13. Rc1 c5 14. dxc6 Nxc6 15. f4 Bxb2 16. Rb1 Bf6 17. Qd5 Rac8 18. Rfc1 Rc7 { Benlloch Guirau,A (2459)-Mercadal Benejam,J (2418) ICCF 2011 1/2-1/2 (41)}) 7... Ne7 8. Bg2 exd5 9. cxd5 Nd7 10. O-O O-O 11. Re1 Re8 12. f4 Nf5 13. Rxe8+ Qxe8 14. Bd2 Nb6 15. a4 Nc4 16. Nb5 Nxb2 {Menéndez,D (2521)-Burghoff,M (2573) ICCF 2007 0-1 (35)}) 5... Bxf3 6. gxf3 Nd7 7. Be3 c5 8. Bh3 cxd4 9. Bxd4 Ngf6 10. f4 O-O 11. Rg1 e5 12. fxe5 Nxe5 13. Qe2 Nh5 14. Nd5 Qh4 15. Bxe5 Bxe5 { Herbert,G (1824)-Jefferson,N (2060) ICCF 2012 0-1 (33)}) 4... Bg7 5. e3 c5 6. d5 Bxf3 7. gxf3 Nf6 8. Nc3 O-O 9. Bg2 a6 10. O-O b5 11. Qe2 bxc4 12. Qxc4 Nbd7 13. f4 Nb6 14. Qe2 Qd7 15. a4 {Sloan,J-Lam,M ICCF 2014 1/2-1/2 (49)}) (3... h6 4. Qb3 b6 5. Nc3 Nf6 6. e4 Bxf3 7. gxf3 e6 8. Be3 Be7 9. O-O-O Nh7 10. e5 dxe5 11. dxe5 Nd7 12. Qa4 O-O 13. Rxd7 Qe8 14. Rg1 Ng5 15. Bg2 {Magallanes,F (2481) -Gallo,E ICCF 2009 1-0 (27)}) 4. exf3 (4. gxf3 g6 5. Qb3 Nc6 6. e3 Qc8 7. h4 Nf6 8. Bh3 Qb8 9. Bd2 Bg7 10. Nc3 a5 11. O-O-O O-O 12. Ne4 h5 13. Ng5 a4 14. Qc2 a3 15. b3 e6 {Kiselev,V (2284)-Kireev,V (2162) ICCF 2012 1-0 (60)}) 4... c6 (4... g6 5. Nc3 Bg7 6. Be3 (6. Be2 e6 7. d5 Nd7 8. Rb1 Ne7 9. O-O O-O 10. Re1 Nf5 11. dxe6 fxe6 12. Ne4 Nd4 13. Be3 Nxe2+ 14. Rxe2 Qe7 15. Qc2 Ne5 16. Rd1 Nc6 17. f4 h6 {Montgomery,R (2312)-Goodwin,B (1946) ICCF 2013 1-0 (50)}) 6... Nf6 7. Qb3 b6 (7... Qc8 8. Be2 O-O 9. O-O Nbd7 10. f4 c6 11. Rac1 e6 12. Bf3 Nb6 13. d5 exd5 14. cxd5 c5 15. a4 Qd7 16. Rfe1 Rae8 17. h3 Re7 18. a5 Na8 19. Nb5 {Brorens,D-Mäkelä,A ICCF 2018 1/2-1/2 (46)}) 8. Bd3 (8. Be2 O-O 9. O-O e6 10. d5 Nbd7 11. dxe6 fxe6 12. Rad1 Nc5 13. Qc2 a5 14. f4 Nfd7 15. Bf3 Rc8 16. Rfe1 Qf6 17. Bg4 Kh8 18. a3 Rfe8 19. Bh3 Nf8 {Cumming,D (2313)-Goodwin,B (1889) ICCF 2014 1/2-1/2 (47)}) 8... O-O 9. O-O {1-0 (9) Williams,C-McBride,A ICCF 2013} Nc6 10. d5 Ne5 11. Be2 e6 12. Rfe1 exd5 13. cxd5 a6 14. Rac1 Ned7 15. a4 Nc5 16. Qd1 a5 17. Bb5 Nfd7 18. Rc2 f5 19. Ne2 Qf6 20. Bxd7 Nxd7 21. Rxc7 { Green,M (2012)-Humphreys,S (2008) ICCF 2015 1-0 (30)}) (4... Nd7 5. Nc3 g6 ( 5... Ngf6 6. g3 (6. Bd3 c6 7. O-O e6 8. Re1 Be7 9. f4 O-O 10. Bd2 d5 11. cxd5 cxd5 12. f5 Qb6 13. fxe6 fxe6 14. Qe2 Qxd4 15. Qxe6+ Rf7 16. Qe2 Bc5 17. Be3 { Rogers,B (1987)-Moujan,P (1948) ICCF 2017 1/2-1/2 (70)}) (6. f4 c6 7. g4 g6 8. h4 Qa5 9. Bd2 Qb6 10. Qe2 O-O-O 11. h5 e5 12. dxe5 dxe5 13. hxg6 fxg6 14. O-O-O exf4 15. g5 Re8 16. Qf3 Ne5 17. Qh3+ Nfd7 {Kuna,H (2257)-Groenhout,R (1863) ICCF 2020 1-0 (27)}) 6... c6 7. d5 cxd5 8. cxd5 g6 9. Bh3 Bg7 10. O-O O-O 11. Re1 Rc8 12. Be3 a6 13. a4 Nh5 14. Ra3 f5 15. f4 Qa5 16. Bd2 Qd8 17. a5 { Landero Luna,V (2305)-Borrás Julián,T (2087) ICCF 2020 1-0 (49)}) 6. Be3 (6. Bg5 Bg7 7. Qd2 Ngf6 8. Be2 O-O 9. O-O c6 10. Rac1 e5 11. d5 c5 12. Rfe1 Qc7 13. g4 a6 14. Kh1 Ne8 15. Be7 f5 16. Bxf8 Nxf8 17. gxf5 gxf5 {Moreto Quintana, A-Jacques,G ICCF 2016 1-0 (34)}) (6. g3 Bg7 7. Bg2 Ngf6 8. O-O O-O 9. Be3 (9. f4 c6 10. d5 cxd5 11. cxd5 Nc5 12. Be3 b6 13. b4 Ncd7 14. Nb5 Ne8 15. Rc1 a6 16. Nd4 Bxd4 17. Bxd4 Rc8 18. Rxc8 Qxc8 19. Qe2 a5 20. Qxe7 Ng7 {Bevans,P (1424)-Göbel,M (1543) ICCF 2016 1-0}) 9... c6 10. Rb1 Qc7 11. Qc2 b5 12. b3 b4 13. Ne4 a5 14. Rbc1 Ra6 15. Qe2 Rfa8 16. Bf4 Qb7 17. Rfd1 a4 {Kanagenthiran,P (1917)-Groenhout,R (1829) ICCF 2016 0-1 (52)}) (6. Bd3 Bg7 7. Be3 e5 8. Bc2 f5 9. dxe5 Bxe5 10. Bd4 Qg5 11. g3 Bxd4 12. Qxd4 Ngf6 13. Ba4 O-O 14. O-O Ne5 15. Bd1 Nc6 16. Qd3 f4 17. Nd5 Nxd5 {Clarke,P-Pardoe,I (1766) ICCF 2015 1-0}) 6... Bg7 7. Qd2 (7. Qc2 e6 8. O-O-O c6 9. h4 Ne7 10. h5 Nf5 11. g4 Nxe3 12. fxe3 Qc7 13. f4 O-O-O 14. Be2 f5 15. h6 Bf6 16. g5 Be7 17. Kb1 Rhe8 18. e4 Kb8 {Nicosia, A-Sartori,D (1812) ICCF 2019 1-0 (48)}) (7. Qa4 c6 8. g4 Ngf6 9. O-O-O O-O 10. Qb3 d5 11. g5 dxc4 12. Bxc4 Ne8 13. h4 Nd6 14. Bd3 Rc8 15. Qa3 Nb6 16. h5 Nb5 17. Qb3 Nd5 18. Nxb5 cxb5+ {Mislin,R (2316)-Egan,M (2281) ICCF 2012 1-0 (49)}) (7. Be2 e6 8. O-O Ne7 9. g4 h5 10. Bg5 f6 11. Be3 hxg4 12. fxg4 f5 13. Re1 Nc6 14. d5 Qh4 15. Bf4 Be5 16. dxc6 bxc6 17. Bxe5 Nxe5 18. Bf3 Qxh2+ {Lopes,D (1999)-Baumgartner,M ICCF 2010 0-1 (50)}) 7... Ngf6 (7... e6 8. h4 h5 9. Bg5 Ne7 10. O-O-O Nb6 11. d5 exd5 12. Nxd5 Nbxd5 13. cxd5 Qd7 14. Kb1 f6 15. Be3 a5 16. Bd3 Kf7 17. Qc2 a4 18. Rhe1 a3 19. Bd4 {Owens,J (2276)-Dudeney,P (2119) ICCF 2017 1-0}) 8. Be2 (8. g4 c5 (8... e6 9. O-O-O c5 10. Nb5 Qb6 11. g5 Ng4 12. fxg4 a6 13. dxc5 Nxc5 14. Nxd6+ Kf8 15. b4 {1-0 (15) Roy Laguens,A-Parente, A (1739) ICCF 2011}) 9. O-O-O cxd4 10. Bxd4 Nc5 11. f4 O-O 12. f3 Rc8 13. f5 Nfd7 14. Bxg7 Kxg7 15. Qd4+ Kg8 16. h4 Ne5 17. Be2 b6 18. f4 Nc6 19. Qe3 { Borisovs,L (2330)-Macs,O (2103) ICCF 2013 1-0}) 8... d5 9. b3 c6 10. g4 e6 11. Kf1 h5 12. Kg2 a6 13. h3 Ng8 14. Rac1 Ne7 15. Bf4 Kf8 16. Rhe1 {Grabove,M (1946)-Hale,A (1952) ICCF 2016 0-1 (32)}) (4... e5 5. dxe5 dxe5 6. Qxd8+ Kxd8 7. Bd3 c6 8. O-O Kc7 9. Nc3 Nd7 10. Rd1 Rd8 11. Bf5 Bb4 12. Ne4 Ngf6 13. Be3 Nxe4 14. fxe4 Nb6 15. a3 Be7 16. b3 {Boreisis,V (1928)-Macs,O (2103) ICCF 2013 1/2-1/2 (34)}) 5. Nc3 (5. Be2 g6 6. Nc3 Bg7 7. O-O Nf6 8. Re1 (8. b3 O-O 9. Bg5 Nbd7 10. Qd2 Re8 11. Rac1 a6 12. Rfd1 d5 13. g4 e6 14. h4 Qe7 15. Kg2 Qf8 16. Be3 h5 17. g5 Nh7 18. f4 Nb6 19. cxd5 Nxd5 {Taffijn,M (2081)-Ruiter,T (2010) ICCF 2020 (52)}) 8... d5 9. cxd5 Nxd5 10. Bc4 Nb6 11. Qb3 Nxc4 12. Qxc4 e6 13. Qb3 b6 14. Be3 O-O 15. Rac1 Qd7 16. Ne4 Qd5 {Duplenko,V (2316)-Kireev,V (2101) ICCF 2011 1/2-1/2}) (5. Bd3 Nd7 6. O-O g6 7. Nc3 Bg7 8. Be3 Qc7 9. Rc1 Ngf6 10. Qc2 O-O 11. c5 dxc5 12. dxc5 e6 13. b4 Nd5 14. Nxd5 exd5 15. g3 Ne5 16. Kg2 Nxd3 {Verbiest,J (1718)-Ruiter,T (2051) ICCF 2020 0-1 (34)}) (5. b4 g6 6. Bb2 Bg7 7. Nc3 Nf6 8. Be2 O-O 9. Rb1 d5 10. c5 b5 11. a3 a5 12. O-O axb4 13. axb4 Nbd7 14. Qd3 Re8 15. Rfe1 Qc7 16. Ra1 e5 {Cain,L-Stetson,M ICCF 2015 0-1 (39)}) 5... g6 (5... Nd7 6. Be2 (6. f4 Nh6 7. Bd3 g6 8. O-O Bg7 9. d5 Nc5 10. Bc2 O-O 11. Bd2 e6 12. b4 Nd7 13. Rb1 exd5 14. cxd5 Nb6 15. dxc6 bxc6 16. Ne4 d5 17. Nc5 Nc4 {Yasakov,I (2319)-Løvholt,T (2274) ICCF 2006 1/2-1/2 (25)}) 6... g6 7. O-O Bg7 8. Re1 Ngf6 9. Be3 O-O 10. Qd2 Rc8 (10... Qa5 11. h3 a6 12. Rac1 Rac8 13. Red1 Rfe8 14. g4 h5 15. a3 Nf8 16. Kg2 Qd8 17. d5 cxd5 18. cxd5 Qa5 19. f4 hxg4 20. hxg4 b5 21. Bf3 Rc4 22. g5 {Salzmann,S (2275)-Lanin,B (2039) ICCF 2015 1-0 (34)}) (10... e6 11. d5 exd5 12. cxd5 c5 13. Bf4 Qb8 14. a4 a6 15. a5 Re8 16. h3 {Grabner,H (2316)-Kostanjsek,Z (2264) ICCF 2014 1/2-1/2 (48)}) 11. Rac1 Nb6 12. b4 a6 13. a4 d5 14. c5 Nbd7 15. f4 Ne8 16. Bd3 e6 17. Rb1 { Lins,P-Scheffknecht,P (2029) ICCF 2013 1/2-1/2 (33)}) 6. Be3 (6. Bd3 Bg7 7. Be3 (7. d5 Nf6 8. O-O O-O 9. Re1 Nbd7 10. f4 Re8 11. f5 Ne5 12. fxg6 fxg6 13. dxc6 bxc6 14. Bf1 Nfd7 15. Qc2 Rb8 16. Be2 Qc7 17. b3 Nc5 18. Be3 Rf8 {Nurmi,R (1797)-Stetson,M ICCF 2016 1-0 (27)}) 7... Nf6 8. O-O d5 (8... O-O 9. d5 Nbd7 10. Re1 cxd5 11. cxd5 a6 12. a4 Rc8 13. a5 Rxc3 14. bxc3 Nxd5 15. Bd2 Nc5 16. Qc2 e6 17. Ra3 Qc7 18. Rb1 Rd8 19. c4 Ne7 20. Be3 {Helman,B (2110)-Lam,M ICCF 2013 1/2-1/2 (50)}) 9. Qb3 Qb6 10. Qc2 dxc4 11. Bxc4 Qc7 12. Qb3 e6 13. Rac1 O-O 14. g3 Nbd7 15. Bf4 Qb6 16. Rfd1 a5 17. Be3 Qxb3 {Deskin,G (2189)-Belanoff, S (2214) ICCF 2017 1/2-1/2 (26)}) (6. g3 Bg7 7. Bg2 Qb6 8. Ne2 Qb4+ 9. Bd2 Qxc4 10. O-O Nf6 11. Bc3 Nd5 12. b3 Nxc3 13. bxc4 Nxd1 14. Raxd1 Nd7 15. f4 Nb6 16. c5 dxc5 17. dxc5 Na4 {Trisconi,A-Ottolini,G (2109) ICCF 2016 0-1 (28)}) 6... Bg7 (6... Nd7 7. Be2 Bg7 8. O-O Ngf6 9. Qb3 Qc7 10. Rfe1 O-O 11. f4 Nb6 12. a4 d5 13. c5 Nc4 14. Bxc4 dxc4 15. Qxc4 a5 16. Rad1 Rfc8 17. Qd3 e6 18. b3 { Bush,F (2252)-Løvholt,T (2203) ICCF 2007 1/2-1/2 (25)}) 7. Be2 (7. Qd2 e6 (7... d5 8. cxd5 cxd5 9. Bb5+ Nc6 10. Bxc6+ bxc6 11. O-O e6 12. Ne2 Ne7 13. Rac1 O-O 14. Rc5 Rb8 15. b3 Rb5 16. Rc2 a5 17. Bg5 Qd7 18. Rfc1 Ra8 19. Bxe7 {Jeute,V (2237)-Pasta,P (2199) ICCF 2020 1/2-1/2 (72)}) (7... Nf6 8. Be2 Nbd7 9. g4 Nb6 10. h4 d5 11. c5 Nc4 12. Bxc4 dxc4 13. Qe2 h5 14. Qxc4 hxg4 15. O-O-O Qd7 16. fxg4 Nxg4 17. d5 Nxe3 18. fxe3 O-O-O 19. e4 {Cousins,R (2246)-De Smet,K (2242) ICCF 2015 1/2-1/2 (30)}) 8. h4 (8. d5 exd5 9. cxd5 Ne7 10. Bc4 O-O 11. O-O c5 12. Bf4 Nd7 13. a4 Ne5 14. Be2 Nf5 15. Bg5 f6 16. Be3 a6 17. f4 Nxe3 18. fxe3 Nf7 19. e4 Qd7 {Alfen,R (1947)-Ruiter,T (2076) ICCF 2013 1/2-1/2}) 8... d5 ( 8... Nf6 9. O-O-O d5 10. Kb1 h5 11. Bf4 dxc4 12. Bxc4 Nbd7 13. Ne4 O-O 14. g4 a5 15. Ng3 Nb6 16. Be2 Qd5 17. Be5 Nbd7 18. Qc3 hxg4 19. fxg4 Rfd8 20. Bc4 { Shadrin,O-Ivanov,V (2174) ICCF 2012 1-0 (42)}) (8... h5 9. d5 exd5 10. O-O-O Ne7 11. cxd5 Qa5 12. Bc4 b5 13. Bb3 c5 14. Bf4 c4 15. Bc2 b4 16. Na4 c3 17. Qe3 cxb2+ 18. Kb1 Qd8 19. Rhe1 Bf6 20. Bxg6 {Bennborn,J (2308)-Cvak,R (2261) ICCF 2012 1-0 (29)}) 9. h5 dxc4 10. Bxc4 Nd7 11. Ne4 Nb6 12. Bb3 Nf6 13. O-O-O Nbd5 14. Bg5 gxh5 15. Kb1 a5 16. a3 h6 17. Bh4 a4 18. Bxd5 cxd5 {Vinchev,S (2382) -Sapundjiev,G (2369) ICCF 2012 1-0 (44)}) (7. h4 Nf6 8. Be2 (8. g4 h5 9. Qe2 e6 10. Bg5 d5 11. gxh5 Rxh5 12. f4 Qb6 13. O-O-O Nbd7 14. cxd5 cxd5 15. Kb1 Rc8 16. Qd2 Rh8 17. Be2 Ne4 18. Nxe4 dxe4 19. h5 gxh5 {Oreopoulos,K-Scuderi,D (2232) ICCF 2009 1/2-1/2 (43)}) 8... e6 9. Qd2 d5 10. Bg5 dxc4 11. Bxc4 Nbd7 12. O-O Nb6 13. Bb3 h6 14. Be3 a5 15. a3 Nfd5 16. Ne4 a4 17. Ba2 Nxe3 18. fxe3 O-O {Kukula,P (2162)-Parente,A (1564) ICCF 2011 1/2-1/2 (42)}) 7... e6 (7... Nf6 8. d5 (8. O-O d5 (8... O-O 9. Qb3 Qc8 10. f4 e6 11. d5 exd5 12. cxd5 c5 13. Rfe1 Na6 14. Bc4 Nc7 15. h3 Rb8 16. a4 Re8 17. Bd2 Rxe1+ 18. Rxe1 Qd7 19. Re2 b6 20. Nb5 {Bars,J (2338)-Lanin,B (2150) ICCF 2013 1/2-1/2 (35)}) 9. b3 O-O 10. Qd2 Nbd7 11. Rfd1 e6 12. Bg5 Re8 13. Bf1 Qb8 14. Rac1 a6 15. h4 Qd6 16. g3 Rac8 17. c5 Qc7 18. Bh3 e5 19. Ne2 Ra8 {Brotherton,T (2219)-Clark,S (1982) ICCF 2019 1-0}) 8... Nbd7 9. O-O O-O 10. Qd2 (10. Re1 cxd5 (10... Qa5 11. a3 cxd5 12. cxd5 Rfc8 13. Bd4 Bh6 14. Bf1 Nxd5 15. Nxd5 Qxd5 16. Rxe7 Bf8 17. Re3 Bh6 18. Re1 Rd8 19. Rb1 Ne5 20. Qa4 Nc6 21. Bc3 Qc5 22. Bf6 {Márquez Abreu,C (2348) -Løvholt,T (2274) ICCF 2006 1-0 (58)}) 11. cxd5 Rc8 12. f4 a6 13. h3 b5 14. Bf3 Ne8 15. Bd4 Bxd4 16. Qxd4 Nef6 17. Rad1 Nb6 18. b3 Rc5 19. Ne4 Nxe4 20. Qxe4 Re8 21. f5 Nd7 {Halliwell,T (2331)-Pasta,P (2120) ICCF 2017 1-0 (45)}) (10. f4 cxd5 (10... Nb6 11. Rc1 Qc7 12. Re1 e6 13. b4 Qd7 14. dxc6 bxc6 15. a4 Rab8 16. b5 cxb5 17. Nxb5 Nc8 18. c5 dxc5 19. Qxd7 Nxd7 20. Red1 Ncb6 21. Nxa7 Rb7 22. a5 {Zaas,J (2090)-Hale,A (2001) ICCF 2016 1/2-1/2 (48)}) 11. cxd5 a6 12. Rb1 Rc8 13. Bf3 Re8 14. Re1 h6 15. a3 Qc7 16. g4 Nh7 17. h4 Nhf8 18. h5 b5 19. Kg2 gxh5 20. gxh5 Nf6 21. Qd3 N8d7 {Sazon,A (2309)-Iacomi,S (2323) ICCF 2019 1-0 (46)}) (10. Qb3 Nc5 11. Qd1 cxd5 12. cxd5 Rc8 13. Rb1 a6 14. a4 Nfd7 15. h3 Nb6 16. Rc1 Ncd7 17. Bd4 Bxd4 18. Qxd4 a5 19. Qd1 Nf6 20. Qb3 Nbd7 21. Bb5 Nc5 { Sacripanti,G (2331)-Iacomi,S (2323) ICCF 2019 1/2-1/2 (33)}) (10. dxc6 bxc6 11. Rb1 a5 12. f4 Qc7 13. Bf3 Nc5 14. Na4 Nfd7 15. Nxc5 Nxc5 16. Qc2 e6 17. Rfd1 Rfe8 18. b3 f5 19. g3 e5 20. fxe5 Bxe5 {1/2-1/2 (20) Jenkins,R (1843)-Kireev,V (2166) ICCF 2012}) 10... Qc7 (10... cxd5 11. cxd5 Rc8 12. Rfc1 Nb6 13. Rab1 Re8 14. b3 a6 15. h3 Nbd7 16. f4 Nc5 17. Bf3 a5 18. g4 Nfd7 19. Nb5 Qb6 {Mamonovas, V (2219)-Kauppinen,M (2296) ICCF 2007 1-0 (33)}) 11. Rac1 c5 12. Nb5 Qb6 13. Bh6 e5 14. b3 Rfe8 15. a4 a6 16. Bg5 axb5 17. cxb5 Qa5 18. Qe3 Nb6 19. Bxf6 { Ritzmann,A (1589)-Stetson,M ICCF 2015 0-1 (31)}) 8. Qb3 Ne7 (8... Qb6 9. Qa3 d5 10. O-O Bf8 (10... Ne7 11. Bg5 f6 12. Bf4 Kf7 13. Na4 Qd8 14. Nc5 Qc8 15. cxd5 Nxd5 16. Ne4 Qd7 17. Be3 Rd8 18. Qb3 Qc7 19. Nc5 b6 20. Nd3 Qd6 21. Rac1 Nd7 22. Rc2 {Becsenescu,F (2399)-Cvetnic,V (2316) ICCF 2012 1-0 (68)}) 11. Qa4 Qb4 12. Qc2 Nd7 13. cxd5 exd5 14. a3 Qb6 15. Bd3 Bd6 16. g3 Kf8 17. b4 h5 18. b5 Qd8 19. bxc6 bxc6 20. Na4 {Jankowiak,A (2246)-Lanin,B (2150) ICCF 2013 1/2-1/2 (47)}) 9. Qxb7 Nd7 10. Qa6 (10. Ne4 O-O 11. Nxd6 Rb8 12. Qa6 Rxb2 13. Qa3 Qb8 14. Nb5 Rxe2+ 15. Kxe2 Nf5 16. Qxa7 cxb5 17. Qxd7 bxc4 18. Rab1 Qa8 19. a4 c3 20. Rhc1 Rd8 21. Qc7 Nxd4+ {Johnston,A (2348)-Lam,M ICCF 2013 1-0 (28)}) 10... Rb8 (10... O-O 11. O-O Nf5 12. Rfd1 Qc7 13. Rab1 d5 14. f4 Rfb8 15. g4 Nxe3 16. fxe3 Rb4 17. b3 Nb8 18. Qa3 a5 19. Qc1 Qe7 20. Kh1 Nd7 21. g5 a4 22. Nxa4 { Kiselev,V-Tarmak,M (1984) ICCF 2011 1-0 (28)}) 11. b3 c5 12. Rd1 Rb6 13. Qa3 Nf5 {Celestini,M (2071)-Di Salvio,G ICCF 2014 1-0}) (2. c4 e5 (2... Bf5 3. Nc3 e6 (3... g6 4. e4 Bd7 5. Nge2 Nf6 6. Ng3 Bg7 7. Be2 O-O 8. Be3 a6 9. h4 Qc8 10. h5 Bg4 11. hxg6 fxg6 12. f3 Bd7 13. Qd2 Nc6 14. O-O-O b5 15. cxb5 {Lucena Cifré,R (1782)-Sanchez Aguirregomezcorta,X (1440) ICCF 2017 1-0 (58)}) 4. g3 Bg6 (4... Nf6 5. Bg2 c6 6. e4 Bg6 7. Nge2 Be7 8. O-O O-O 9. Nf4 e5 10. Nxg6 fxg6 11. Be3 Nbd7 12. d5 c5 13. Qe2 a6 14. a4 Kf7 15. Bh3 h5 16. Be6+ {Deforel, J (2217)-Pereyra,D (1957) ICCF 2016 1-0 (31)}) 5. Bg2 c6 6. d5 e5 7. Nf3 Qc7 8. O-O Nf6 9. Nh4 a6 10. b4 Be7 11. Nxg6 hxg6 12. Rb1 Qd7 13. a3 Qf5 14. f4 { Deforel,J (2217)-Pereyra,D (1957) ICCF 2016 1-0 (29)}) (2... Nd7 3. e4 (3. Nc3 e5 4. Nf3 Qe7 (4... c6 5. e4 exd4 (5... h6 6. Be2 Qf6 7. Be3 Be7 8. Qd2 Bd8 9. Rd1 Bc7 10. b4 a6 11. d5 c5 12. bxc5 dxc5 13. O-O Bd8 14. Ne1 Qg6 15. Nd3 b6 16. f4 exf4 17. Nxf4 {Fernández Riesgo,M (1422)-Jacobs,G (1423) ICCF 2017 1-0 (28)}) 6. Nxd4 Ngf6 7. Be2 Nc5 8. f3 Be7 9. Be3 a5 10. Qc2 h6 11. g4 g5 12. O-O-O Qc7 13. Kb1 Bd7 14. h4 O-O-O 15. hxg5 hxg5 16. Bxg5 {Poelvoorde,H-Belter, E (1720) ICCF 2020 1-0 (33)}) (4... Ne7 5. e4 (5. e3 Ng6 6. Bd3 Be7 7. Qc2 b6 8. Be4 Rb8 9. Nb5 a6 10. Na7 Bb7 11. Nc6 Bxc6 12. Bxc6 O-O 13. O-O b5 14. cxb5 axb5 15. Qf5 Nf6 16. e4 Rb6 {Krause,M-Jooste,M (1997) ICCF 2007 1-0 (53)}) 5... Ng6 6. Be3 Be7 7. Be2 O-O 8. a3 Nf6 9. h3 c6 10. O-O h6 11. Qc2 Nh7 12. Rad1 Qc7 13. b4 b6 14. b5 Bd7 15. Qb3 Nf6 16. Rfe1 {Pirrone,M-Jooste,M (1997) ICCF 2007 1-0 (31)}) 5. e4 f5 6. Nd5 Qd8 7. exf5 Ndf6 8. dxe5 Nxd5 9. cxd5 Bxf5 10. Nd4 Bd7 11. e6 Bc8 12. Bb5+ c6 13. dxc6 Ke7 14. Qf3 Nf6 {Kozlov,V (2409) -Pereyra,D (1601) ICCF 2017 1-0}) (3. Nf3 e6 4. Nc3 Ne7 5. Bg5 c6 6. Qc2 g6 7. e3 Bg7 8. Bd3 d5 9. c5 h6 10. Bh4 b6 11. cxb6 axb6 12. Bxe7 Qxe7 13. O-O c5 14. dxc5 bxc5 {Gilbert,R (1699)-Major,B ICCF 2020 1-0 (41)}) (3. g3 e5 4. e4 Ngf6 5. Bg2 a6 6. dxe5 Nxe5 7. b3 b6 8. Bb2 Nc6 9. a3 Be7 10. Nd2 Bg4 11. Ngf3 O-O 12. O-O Qd7 13. Qe1 Bh3 14. Qe3 Ng4 {Kearns,A (1428)-Major,B ICCF 2020 1-0 (44) }) 3... c5 4. dxc5 Nxc5 5. Nd2 g6 6. Ngf3 Bg7 7. Be2 b6 8. O-O Bb7 9. Rb1 Nxe4 10. Nxe4 Bxe4 11. Bd3 Bxd3 12. Qxd3 Nf6 13. Re1 O-O 14. Bg5 {Kraut,M (1361) -Morton,P (1541) ICCF 2018 0-1 (29)}) (2... c5 3. Nc3 cxd4 4. Qxd4 Nc6 5. Qd1 g6 6. Nf3 Nf6 7. Bg5 Ng4 8. h3 Nge5 9. e3 h6 10. Bf4 g5 11. Bxe5 Nxe5 12. Nxe5 dxe5 13. Qxd8+ Kxd8 14. Bd3 {Beraldo,G-Navara,E (1546) ICCF 2012 1-0 (51)}) ( 2... Bd7 3. Nc3 g6 4. Nf3 Bg7 5. e4 Nf6 6. Bg5 O-O 7. Be2 c6 8. Qd2 b5 9. cxb5 a6 10. bxc6 {1-0 (10) Lucena Cifré,R (1622)-De León López,A (1378) ICCF 2016}) (2... Be6 3. e4 Bd7 4. Nf3 h6 5. Nc3 Bg4 6. Be2 Bxf3 7. Bxf3 c6 8. Be3 e5 9. O-O Nd7 10. Qd2 Ngf6 11. Ne2 Be7 12. Rfd1 exd4 13. Bxd4 O-O 14. Ng3 {Mares,P (1829)-Klein,J (1550) ICCF 2013 1-0}) 3. e3 (3. Nf3 e4 (3... g5 4. Bxg5 f6 5. Bh4 Bg4 6. dxe5 Be6 7. exf6 Nc6 8. f7+ Kxf7 9. Bxd8 Rxd8 10. Ng5+ Ke7 11. Nxe6 Kxe6 12. Qb3 Nf6 13. Qxb7 Kd7 14. g3 Rb8 15. Bh3+ {Mões Joaquim,C (1843)-Lima, J ICCF 2010 1-0}) (3... Nf6 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Nxe5 Be6 7. b3 Bd6 8. Nd3 Nc6 9. Nc3 Kd7 10. Bb2 Rad8 11. e3 Kc8 12. Rd1 Nb4 13. Nb5 Nxd3+ 14. Bxd3 Bb4+ 15. Ke2 {Tudor,V (1653)-Parente,A (1739) ICCF 2011 1-0}) 4. Ng5 (4. Nfd2 f5 5. e3 Nf6 6. Be2 g5 7. O-O g4 8. g3 Nc6 9. Nc3 a6 10. a4 d5 11. cxd5 Nxd5 12. Nxd5 Qxd5 13. Bc4 Qd8 14. Re1 h5 15. b3 Bb4 {Hodgkins,N-Grandi,C ICCF 2018 1-0 (27)}) (4. Ng1 Be7 5. Nc3 Nf6 6. f3 Bf5 7. e3 O-O 8. fxe4 Bxe4 9. Nxe4 Nxe4 10. Bd3 d5 11. Qb3 dxc4 12. Qxc4 Nf6 13. Nf3 c5 14. Bd2 cxd4 15. exd4 Nc6 { Keber,E (2167)-Degtyaryov,S (2192) ICCF 2013 1/2-1/2}) 4... f5 5. g3 (5. Qa4+ c6 6. Nc3 Be7 7. Bf4 Bxg5 8. e3 Bxf4 9. exf4 Nf6 10. Be2 O-O 11. O-O Be6 12. Qb3 Qc7 13. h3 d5 14. Rad1 Nbd7 15. g3 dxc4 16. Qb4 a5 {Schledorn,J-Zbiljic,N (1819) ICCF 2020 0-1}) (5. d5 Be7 6. Ne6 Bxe6 7. dxe6 Qc8 8. Qd5 g6 9. Qb5+ c6 10. Qa4 Nf6 11. h3 Na6 12. Bh6 Qxe6 13. e3 Rg8 14. Bf4 Nc5 15. Qc2 Nh5 16. Bh2 f4 {Reed,J-Jefferson,N ICCF 2006 0-1 (32)}) (5. Nh3 Nf6 6. Bg5 Be7 7. e3 Be6 8. Nc3 O-O 9. Nf4 Bf7 10. Qb3 Nbd7 11. Qxb7 c5 12. Be2 cxd4 13. exd4 h6 14. Bxf6 Bxf6 15. Rd1 Rb8 16. Qxa7 Rxb2 {Lautenbach,W (2256)-Mondry,M (2175) ICCF 2012 0-1 (54)}) (5. h4 h6 6. Nh3 Qxh4 7. Nc3 c6 8. Bf4 Qd8 9. e3 Nf6 10. Be2 g6 11. Qd2 Nbd7 12. O-O-O Nb6 13. Bg3 d5 14. Nf4 Rg8 15. cxd5 Nbxd5 16. Ncxd5 Nxd5 { Pérez Ferrís,M-García Ramírez,C ICCF 2009 1-0 (39)}) 5... Be7 6. Nh3 (6. h4 Nf6 7. Nc3 c6 8. Nh3 O-O 9. Nf4 Na6 10. Bh3 d5 11. cxd5 cxd5 12. Qb3 Nc7 13. a4 Kh8 14. O-O Bd7 15. Bd2 a5 16. Ng2 {1/2-1/2 (16) Pidoyma,V (2073)-Terpstra,W (2087) ICCF 2019}) 6... Nf6 7. Bg2 c6 8. O-O Nbd7 9. Nc3 Nb6 10. b3 d5 11. c5 Nbd7 12. b4 O-O 13. b5 Nb8 14. Bf4 Nh5 {Glanville,C (2084)-Cook,D ICCF 2012 1-0 (28)}) ( 3. dxe5 dxe5 (3... Bf5 4. exd6 (4. Nf3 Nc6 5. a3 dxe5 6. Nc3 Nf6 7. Qxd8+ Rxd8 8. Bg5 Nd4 9. Nxd4 exd4 10. Bxf6 gxf6 11. Nb5 Rd7 12. g3 d3 13. exd3 a6 14. Nc3 c5 15. Nd5 Bh6 {Lucena Cifré,R (1551)-Sanchez Aguirregomezcorta,X (1297) ICCF 2017 1-0 (32)}) 4... cxd6 5. Nf3 Nd7 6. Bf4 Qb6 7. b3 g6 8. Nbd2 Ngf6 9. Be3 Qa5 10. g3 Ne4 11. Bg2 Bg7 12. O-O O-O 13. b4 Qxb4 14. Rb1 Qa3 15. Rxb7 { Reyes Cortés,R (1626)-Sanchez Aguirregomezcorta,X (1297) ICCF 2017 1-0 (40)}) ( 3... Nc6 4. exd6 Bxd6 5. e3 Bf5 6. Nc3 Nb4 7. e4 Qe7 8. a3 Bxe4 9. axb4 Bxg2+ 10. Qe2 Bxh1 11. Be3 Bxb4 12. f3 Nf6 13. Kf2 Ne4+ 14. Nxe4 Qh4+ {0-1 (14) Gavrilovic,M (1977)-Borisek,A (1611) ICCF 2006}) 4. Nc3 (4. e4 Qxd1+ 5. Kxd1 Bc5 6. f3 Nc6 7. Ne2 Be6 8. b3 O-O-O+ 9. Nd2 Nge7 10. Nc3 Bd4 11. Bb2 g5 12. a3 g4 13. Kc2 f5 14. Be2 h5 15. Rad1 Ng6 {Dantas,A (1728)-Tsang,K ICCF 2006 1/2-1/ 2 (52)}) (4. g3 Qxd1+ 5. Kxd1 Bc5 6. e3 Nc6 7. a3 a5 8. Bg2 Nf6 9. b3 Bf5 10. Bb2 O-O-O+ 11. Ke2 Rd3 12. Bxc6 Rxb3 13. Bxe5 Bxb1 14. Ba4 Bd3+ 15. Kf3 Rxa3 { Carter,M (1901)-Riihimäki,V (1953) ICCF 2015 0-1 (29)}) (4. Qxd8+ Kxd8 5. Nc3 ( 5. Nf3 f6 (5... Nc6 6. e3 a6 7. Bd3 Nf6 8. Bc2 Bd6 9. e4 h6 10. O-O Be6 11. b3 b5 12. cxb5 axb5 13. Bd3 Bxb3 {0-1 (13) Radzinski,S (1413)-Azzi,R (1465) ICCF 2021}) (5... Bb4+ 6. Bd2 Bxd2+ 7. Nbxd2 Nc6 8. O-O-O Bd7 9. e3 f5 10. Nb3 b6 11. Be2 Nf6 12. Ng5 Ke7 13. Rd2 h6 14. Nf3 Rhd8 15. Rhd1 Ne4 16. Rd5 Nxf2 17. R1d2 {Baer,S (1540)-Wright,D (1618) ICCF 2015 0-1 (58)}) (5... Bd6 6. Nc3 Nf6 7. e4 h6 8. Be2 Be6 9. O-O Nbd7 10. Re1 c6 11. Be3 Kc7 12. a3 a5 13. Nd2 Bc5 14. Bf1 Bxe3 15. Rxe3 Rad8 16. h3 Nc5 17. Nd5+ {Grinbergs,N-Clark,S (1594) ICCF 2016 1-0 (35)}) 6. e4 (6. e3 Be6 7. Be2 Nd7 8. O-O c6 9. Rd1 Kc7 10. Ne1 Nh6 11. b3 Nf7 12. Nc3 Rd8 13. Bb2 h5 14. Nc2 g5 15. b4 Be7 16. c5 a5 17. a3 g4 {Marci,B (2130)-Murin,P (2331) ICCF 2015 1/2-1/2 (53)}) 6... Na6 7. Bd3 Nb4 8. Ke2 Nxd3 9. Rd1 Ke8 10. Rxd3 f5 11. Nc3 Nf6 12. Nd2 c6 13. f3 f4 14. a3 Be6 15. b4 Nd7 16. Bb2 Be7 {Ignatov,B (2342)-Edwards,K (2246) ICCF 2008 1/2-1/2 (36)}) (5. a3 f6 (5... Ne7 6. Nf3 f6 7. Nc3 Be6 8. e4 Nd7 9. Be2 a5 10. Be3 Nc6 11. Rd1 Kc8 12. h3 b6 13. Nh4 a4 14. Bg4 Nd8 15. Nd5 Bc5 16. Nf5 h5 17. Nfe7+ { Uygun,A (2158)-Mehlhorn,U (2356) ICCF 2017 0-1 (55)}) 6. Nc3 a5 7. g3 c6 8. Bg2 Be6 9. b3 Nd7 10. Nf3 Kc7 11. Be3 Ne7 12. O-O Nf5 13. Nd2 Nxe3 14. fxe3 Bc5 15. Nd1 f5 16. Kh1 e4 {Aitken,N-Cook,D ICCF 2011 0-1 (31)}) (5. Bd2 Nc6 6. a3 Nd4 7. Kd1 Nb3 8. Ra2 Be6 9. e3 c6 10. Bd3 Nc5 11. Bc2 Bxc4 12. Nf3 Bxa2 {0-1 (12) Davis,J (1589)-Wright,D (1618) ICCF 2014}) 5... Be6 (5... c6 6. Nf3 (6. Bd2 Be6 7. e4 Nd7 8. O-O-O Bc5 9. f4 exf4 10. Bxf4 Ngf6 11. Nf3 Ng4 12. Na4 Be3+ 13. Bxe3 Nxe3 14. Rd4 Kc7 15. b3 Rad8 16. h3 Nf6 17. Nc3 Rxd4 {Madelaine,J-Mitel,C ICCF 2009 0-1 (46)}) (6. g3 f6 7. f4 Be6 8. fxe5 fxe5 9. Nf3 Nf6 10. e4 Nbd7 11. Bg5 Kc7 12. O-O-O Bb4 13. Bxf6 gxf6 14. Bd3 Nc5 15. Kc2 Nxd3 16. Rxd3 Bxc4 17. Rdd1 Bxc3 {Parkes,R (2359)-Díaz Castañet,J (2257) ICCF 2008 0-1}) 6... f6 7. e4 (7. Bd2 Be6 8. b3 Kc7 9. O-O-O Nd7 10. g3 Bc5 11. e3 Ba3+ 12. Kc2 Nh6 13. h3 Nf7 14. e4 Bc5 15. Rh2 Rad8 16. Ne1 Nd6 17. f3 f5 18. Nd3 Bd4 {Araújo, H-Hoeher,C (1707) ICCF 2005 0-1 (40)}) 7... Be6 (7... Bc5 8. Be2 Be6 9. b3 Nh6 10. O-O Kc7 11. Rd1 Ng4 12. Be3 Nxe3 13. fxe3 Bxe3+ 14. Kh1 a5 15. Rd3 Bc5 16. Na4 Na6 17. Rad1 Be7 18. Nd2 Nb4 19. Rc3 {Secondi,A (1664)-Capuzzi,G (1801) ICCF 2011 0-1 (29)}) 8. Be3 (8. a3 a5 9. Be2 Nd7 10. Be3 (10. O-O a4 11. Rd1 Bc5 12. Be3 Bxe3 13. fxe3 Nh6 14. h3 Ke7 15. Rac1 Nc5 16. Ne1 Nb3 17. Rc2 Nf7 18. Nf3 Nd6 19. Nd2 Rhd8 20. Kf2 Nc5 21. Rcc1 Rd7 {Eeckhout,J (1738)-Mitel,C ICCF 2010 0-1 (27)}) 10... Bc5 (10... a4 11. Rd1 Kc7 12. O-O Ne7 13. Rd2 Nc8 14. Rc1 Nc5 15. Bxc5 Bxc5 16. Nd5+ Kb8 17. Nb4 Nd6 18. Nd3 Nxe4 19. Nxc5 Nxc5 20. Rcd1 Kc7 21. Ne1 Rad8 22. Rxd8 {Williams,G (2299)-Chilvers,K ICCF 2013 0-1 (34)}) 11. Bxc5 Nxc5 12. Rd1+ Kc7 13. O-O a4 14. Nh4 (14. Ne1 g5 15. Nc2 Nh6 16. f3 Nf7 17. Ne3 Nd6 18. Kf2 h5 19. g3 h4 20. g4 b6 21. Na2 Nb3 22. Bd3 Na5 23. Rc1 b5 24. Nd5+ Kb7 25. c5 Ndc4 {Neri,E (1895)-Lanin,B (2150) ICCF 2013 0-1 (40)}) 14... Nh6 15. g3 Nf7 16. Ng2 Nd6 17. Ne3 Ndxe4 18. Nxe4 Nxe4 19. f4 Rad8 {Rice,R (1534)-Curry,S (1906) ICCF 2010 0-1 (30)}) (8. Be2 Nd7 9. O-O Bb4 10. Bd2 Ne7 11. Rfd1 Kc7 12. a3 Bxc3 13. Bxc3 Rad8 14. b4 Nb6 15. c5 Na4 16. Be1 Nb2 17. Rdb1 Nd3 18. Bxd3 Rxd3 19. a4 Rhd8 {Holt,F-Boyd,J ICCF 2012 0-1 (39)}) (8. h3 Bb4 9. Bd2 Nd7 10. O-O-O Bxc3 11. Bxc3 Kc7 12. b4 Nb6 13. Nxe5 Ne7 14. Nf3 Rad8 15. Nd4 Bf7 16. a3 Nxc4 17. Bxc4 Bxc4 18. Rd2 Rd7 19. Rhd1 Rhd8 {Mayes,F (1654)-Fuller,T ICCF 2012 0-1 (46)}) 8... Nd7 9. a3 (9. O-O-O Kc7 10. Be2 g6 11. Kc2 Bh6 12. Bd2 Rd8 13. a3 b6 14. b4 Bxd2 15. Rxd2 Nh6 16. Rhd1 Nf7 17. h4 Nb8 18. Rxd8 Rxd8 19. Rxd8 Nxd8 20. Nd2 {1/2-1/2 (20) Stock,G (2110) -Deneuville,C (2250) ICCF 2009}) (9. Be2 g6 10. O-O Kc7 11. Rfd1 Bh6 12. Bd2 Bxd2 13. Rxd2 Nh6 14. Rad1 a5 15. Na4 Rad8 16. Rd6 Rhe8 17. b3 Bg4 18. R6d2 Bxf3 19. Bxf3 Nf7 20. Be2 Nf8 {Martinho,F (1672)-Ott,P (1669) ICCF 2020 (69)}) 9... Kc7 10. Be2 Bc5 (10... a5 11. O-O Bc5 12. Bd2 a4 13. Rfc1 Bf7 14. Nd1 Bg6 15. Bd3 Nh6 16. Bb4 Nf7 17. Nc3 Bd4 18. Nh4 b6 19. Re1 Nd6 20. Rac1 Bxc3 21. Bxc3 Nc5 22. Nxg6 {Dzenis,J (2173)-Díaz Castañet,J (2135) ICCF 2012 1/2-1/2 (70)}) 11. Bxc5 Nxc5 12. b4 Nb3 13. Rd1 a5 14. b5 Ne7 15. O-O a4 16. Rb1 Rhd8 17. Rfd1 {Neri,E (1789)-Pajak,J (2256) ICCF 2016 0-1}) (5... Ne7 6. Nf3 a5 7. Nxe5 Be6 8. b3 Ra6 9. Bb2 Nf5 10. e3 g6 11. Rd1+ Bd6 12. Ne4 Rf8 13. g4 Nh4 14. c5 f6 15. cxd6 cxd6 16. Bxa6 h5 17. Rxd6+ {Lucena Cifré,R (1622)-Sanchez Aguirregomezcorta,X ICCF 2016 1-0 (39)}) (5... Bb4 6. Bg5+ f6 7. Bd2 Ne7 8. Nf3 Bg4 9. e4 Nbc6 10. Bd3 Bxf3 11. gxf3 Nd4 12. f4 Nf3+ 13. Ke2 Nxd2 14. fxe5 Bxc3 15. bxc3 Nxc4 16. exf6 gxf6 17. Bxc4 {Crnic,I-Wright,D (1618) ICCF 2014 0-1 (36)}) 6. b3 (6. Nf3 f6 (6... Nc6 7. e3 Bb4 8. Bd2 h6 9. a3 Bd6 10. b4 Nf6 11. c5 Be7 12. Bb5 a5 13. O-O e4 14. Bxc6 bxc6 15. Nd4 Kd7 16. b5 cxb5 17. c6+ Kc8 18. Nxe6 {Cipolla,A-Schmalz,P ICCF 2015 1/2-1/2 (33)}) 7. e3 (7. e4 Bb4 (7... Nd7 8. Be2 a5 9. O-O b6 10. Be3 Bc5 11. Bxc5 Nxc5 12. Rad1+ Kc8 13. a3 a4 14. Ne1 Ne7 15. Nd5 Nc6 16. Nf3 Nxe4 17. Nd2 Nd4 18. Bd3 Nc5 19. Ne4 {Sowrrirajan, K-Poffers,A ICCF 2010 0-1 (31)}) (7... Bc5 8. Be3 Bxe3 9. fxe3 c6 10. Be2 Nh6 11. h3 Kc7 12. Kf2 a5 13. b3 Na6 14. Rhd1 Nf7 15. Rd2 Rad8 16. Rad1 Rxd2 17. Rxd2 Nc5 18. Bd1 Nd6 19. Bc2 {Neri,E (1710)-Vajas,S (1935) ICCF 2019 0-1 (28)}) 8. Bd2 a5 9. O-O-O Kc8 10. Ne1 Ne7 11. b3 Na6 12. Kb2 Bc5 13. f4 b6 14. Nf3 Nc6 15. Be2 Rf8 16. Rhf1 Kb7 17. Nb5 Rad8 18. a3 h6 {Nigrin,J (2156)-Baciak,M (2240) ICCF 2018 0-1 (48)}) (7. b3 c6 8. Bb2 Ne7 9. Rd1+ Kc7 10. e4 Nd7 11. h4 Nc8 12. h5 Bb4 13. h6 g5 14. a3 Bxc3+ 15. Bxc3 a5 16. Nd2 Nc5 17. f3 Rd8 18. a4 b6 {Lagergren,H (1876)-Cook,D (2216) ICCF 2014 0-1 (45)}) 7... c6 8. b3 (8. Be2 Nd7 9. O-O Kc7 10. b3 Nh6 11. Bb2 Nf7 12. Rad1 Rd8 13. Ne1 Be7 14. Nd3 Rhe8 15. Na4 b6 16. h3 f5 17. Bc3 g6 18. f3 {1/2-1/2 (18) Pallitsch,C-Lins,P ICCF 2013}) (8. Bd2 Nd7 9. O-O-O Kc7 10. e4 Bc5 11. Be3 Bxe3+ 12. fxe3 Nh6 13. h3 Nf7 14. Be2 Nc5 15. g4 a5 16. Rhf1 h5 17. Rg1 hxg4 18. hxg4 Nd6 19. Nd2 Rh3 {Bujnovský, J-Murin,P (2331) ICCF 2015 0-1 (29)}) 8... Nd7 9. h3 (9. Bb2 Kc7 10. Bd3 Nc5 11. Bc2 a5 12. O-O Nh6 13. Rad1 Nf5 14. h3 b6 15. Rd2 Nd6 16. Rc1 Be7 17. Rdd1 Rad8 18. Ba3 Ndb7 19. Rxd8 Nxd8 20. Rd1 Ndb7 {Manarin,F (1972)-Bourgault,J (1964) ICCF 2021 0-1 (32)}) 9... Nh6 10. Bd3 a5 11. Bb2 Kc7 12. Nd2 Nc5 13. Bc2 a4 14. O-O-O axb3 15. axb3 Nf7 16. f4 Be7 17. Kb1 Na6 {Glembek,B (2185)-Pasta, P (2175) ICCF 2019 1/2-1/2 (34)}) (6. e4 c6 (6... Bc5 7. Nf3 Nc6 8. a3 Nd4 9. Nxd4 exd4 10. Nd5 c6 11. Nf4 Bd7 12. b4 Bd6 13. c5 Bc7 14. Nd3 Nf6 15. f3 Ke7 16. Bb2 a5 17. Bxd4 axb4 18. axb4 {Capuzzi,G-Hasidume,S (1823) ICCF 2009 1/2-1/ 2 (37)}) 7. Bg5+ f6 8. O-O-O+ Kc7 9. Be3 Nd7 10. Nf3 Nh6 11. h3 Nf7 12. Be2 b6 13. Rd2 Bb4 14. Rc2 Nc5 15. Bxc5 Bxc5 16. Bd3 Rhd8 17. Rd1 Rd7 {Matrisch,G (2379)-Pohjosmäki,R (2255) ICCF 2014 0-1 (43)}) (6. e3 Ne7 7. Nf3 f6 8. Be2 c6 9. O-O Kc7 10. b4 Na6 11. Rb1 Ng6 12. a3 Be7 13. g3 Rad8 14. e4 Nb8 15. Be3 b6 16. a4 h6 17. a5 f5 {Elwood,D-Fenby,J ICCF 2012 1/2-1/2 (31)}) 6... Nd7 7. g3 ( 7. Nf3 f6 8. e4 (8. g3 c6 9. Bg2 (9. Bb2 Kc7 10. Bg2 a5 11. O-O-O Bb4 12. h4 Bxc3 13. Bxc3 a4 14. Kb2 Nh6 15. Rd2 axb3 16. axb3 Ng4 17. e3 Ra7 18. Ra1 Rxa1 19. Kxa1 Nc5 20. Kb2 Nxf2 {Garey,A (2030)-Almer,G (1943) ICCF 2005 0-1}) 9... Kc7 10. O-O a5 (10... Ne7 11. Rd1 g5 12. a4 g4 13. Nd2 Nf5 14. Ba3 Bxa3 15. Rxa3 h5 16. a5 h4 17. b4 Rad8 18. b5 hxg3 19. hxg3 cxb5 20. cxb5 Nc5 21. b6+ Kb8 22. bxa7+ {Vieito Soria,L (2143)-Pregun,J (2059) ICCF 2007 1/2-1/2}) 11. Be3 Bc5 12. Bxc5 Nxc5 13. Rfd1 Nh6 {1/2-1/2 (13) Ferre Pérez,A (2093)-Sánchez de Ybargüen Gutiérrez,L (2241) ICCF 2015}) 8... c6 9. Be2 Kc7 10. O-O Nh6 11. Rd1 a5 12. Bd2 Ba3 13. Ne1 Nc5 14. Be3 Ng4 15. Bxg4 Bxg4 16. f3 Be6 17. Ne2 Rhd8 18. Nc2 Bb2 {Gulbis,H (1772)-Kapce,V (1965) ICCF 2007 1/2-1/2 (36)}) (7. Bb2 c6 8. g3 f6 9. Bh3 Bxh3 10. Nxh3 Kc7 11. e3 Nh6 12. Ke2 a5 13. f3 Nc5 14. Nf2 Nf7 15. Rhd1 Be7 16. Nfe4 Ne6 17. Rac1 b6 18. Rd2 f5 {Sladek,V (1948) -Bristol,M (2138) ICCF 2012 0-1}) 7... Bb4 8. Bb2 Ngf6 9. Bg2 c6 10. a3 (10. O-O-O Ng4 11. Ne4 Bf5 12. Rf1 Re8 13. h3 Nh6 14. g4 Bg6 15. Ng3 Kc7 16. Nf3 f6 17. Nh4 Bf7 18. Rd1 a5 19. Be4 Bg8 20. Nhf5 Nxf5 21. Bxf5 Nf8 {Clark,S (2043) -Gardner,A (2142) ICCF 2016 0-1 (57)}) 10... Bd6 11. Nf3 h6 12. Rd1 Kc7 13. O-O Rhd8 14. Rc1 a5 15. Nd2 b6 16. Rfd1 Kb7 17. Nb5 Bc5 18. Bc3 Rac8 19. b4 Be7 20. c5 axb4 21. axb4 Nd5 22. Nd6+ Bxd6 23. cxd6 b5 24. Ne4 Ra8 25. Nc5+ Nxc5 26. bxc5 Nxc3 27. Rxc3 b4 28. Re3 b3 29. Rb1 Ra5 30. Rxe5 Rxd6 31. Rxb3+ Bxb3 32. Re7+ Ka6 33. cxd6 Kb6 34. Bh3 {1-0 (34) Ríos Garcés,J (2028)-Marcuzzo,G (2024) ICCF 2019 1 d4 d6: Tartakower System-and Modern Defence}) 4... Qxd1+ 5. Nxd1 ( 5. Kxd1 Be6 6. e4 Nc6 7. Nd5 O-O-O 8. Bd3 Bc5 9. f3 f5 10. Bd2 Nge7 11. Ne2 f4 12. a3 a5 13. Nec3 Kb8 14. Kc2 Nd4+ 15. Kb1 Nb3 16. Kc2 Nxa1+ {Perks, G-Pareschi,R ICCF 2007 0-1 (27)}) 5... Nc6 (5... Bb4+ 6. Nc3 Bxc3+ 7. bxc3 Nc6 8. Rb1 Nge7 9. e4 O-O 10. c5 Na5 11. Nf3 f6 12. Be3 Be6 13. a3 Rfd8 14. Nd2 Rd7 15. Bb5 c6 16. Be2 Rad8 17. g3 {Ivanovs,R-Beltins,G ICCF 2005 0-1 (38)}) 6. Nf3 Be6 7. e4 Nf6 8. Bd3 O-O-O 9. O-O Rxd3 10. Bg5 Nxe4 11. Nc3 Nxc3 12. bxc3 Rxc3 13. Rad1 f6 14. Be3 Bxc4 {Häkkinen,J (1508)-Curry,S (1859) ICCF 2010 0-1 (27)}) (3. Nc3 Nc6 4. d5 Nb8 (4... Nce7 5. e4 g6 6. f4 Bg7 7. Nf3 exf4 8. Bxf4 Nf6 9. Qd2 Bg4 10. O-O-O O-O 11. Bg5 a6 12. Kb1 Rb8 13. Re1 Nd7 14. h3 Bxf3 15. gxf3 c6 16. h4 {Walton,J (2241)-Rajala,O (1976) ICCF 2020 1-0 (39)}) 5. e4 Be7 6. Nf3 Nf6 7. h3 O-O 8. Be3 c6 9. Bd3 Nbd7 10. O-O a6 11. b4 cxd5 12. cxd5 b5 13. a4 bxa4 14. Rxa4 Nh5 {Thompson,E (1946)-Gaboleiro,G (1852) ICCF 2020 1-0 (31)}) (3. e4 exd4 4. Qxd4 Nc6 5. Qd1 g6 6. Nf3 (6. Nc3 Bg7 7. Bd3 Nf6 8. Nge2 O-O 9. O-O Re8 10. f3 Nd7 11. Be3 Nc5 12. Bc2 a5 13. Qd2 Be6 14. b3 a4 15. Rad1 axb3 16. axb3 Nb4 17. Nb5 Ra2 {Buker,M (2056)-Mehlhorn,U (2380) ICCF 2018 1/2-1/2 (30)}) 6... Bg7 7. Nc3 Nf6 8. Bd3 O-O 9. h3 Nd7 10. O-O Nde5 11. Be3 Nxf3+ 12. Qxf3 Qh4 13. Nd5 Ne5 14. Qe2 c6 {Fuentes Arjona,A (2191)-Yvinec,J (2354) ICCF 2010 0-1 (58)}) (3. d5 f5 (3... Be7 4. Nc3 Nd7 5. e4 (5. Nf3 f5 6. e4 f4 7. g3 Ngf6 8. gxf4 exf4 9. Rg1 O-O 10. Bxf4 Nc5 11. Bh6 Ng4 12. Bxg7 Kxg7 13. h3 Bf6 14. Qc2 Kg8 15. hxg4 Bxc3+ 16. Qxc3 Nxe4 {Taylor,B (2001)-Bourgault,J (1966) ICCF 2020 1/2-1/2 (40)}) 5... Bg5 6. Bxg5 Qxg5 7. Nf3 Qd8 8. Be2 Ne7 9. O-O O-O 10. a3 a5 11. Re1 f5 12. exf5 Nxf5 13. Ne4 Nf6 14. Nc3 b6 15. h3 {Manarin,F (1971)-Marcuzzo,G (2026) ICCF 2019 1/2-1/2 (34)}) (3... g6 4. Nc3 (4. e4 a5 5. Bd3 Na6 6. Bc2 Bh6 7. Bxh6 Nxh6 8. Qd2 Qh4 9. Nc3 Ng4 10. a3 Qh6 11. Nf3 O-O 12. O-O Qxd2 13. Nxd2 Kg7 14. Nb3 b6 15. Nd2 f5 {Cumming,D (2295)-Leupold,V (2385) ICCF 2014 1/2-1/2 (59)}) 4... Nd7 5. e4 (5. Nf3 a5 6. e4 Ngf6 7. h3 Nc5 8. Qc2 Bg7 9. Bg5 b6 10. Be2 h6 11. Be3 Bd7 12. g4 c6 13. Nd2 O-O 14. O-O-O cxd5 15. exd5 Qe7 16. f3 Rab8 {Nyberg,W (2371)-Bröker,C (2331) ICCF 2014 0-1 (62)}) 5... a5 6. Bd3 Nc5 (6... h5 7. Bc2 Bh6 8. Bxh6 Nxh6 9. Qd2 Qe7 10. Nge2 h4 11. h3 Nc5 12. a3 a4 13. O-O-O g5 14. f3 Kd8 15. g4 Bd7 16. Nb5 Qf6 17. Qb4 Qxf3 18. Nec3 {Hildebrand,G (2372)-Scholz,G (2273) ICCF 2020 1-0 (42)}) 7. Bc2 Bh6 8. Nge2 Bxc1 9. Qxc1 Nf6 10. O-O O-O 11. f3 Bd7 12. b3 c6 13. dxc6 bxc6 14. h3 Qe7 15. f4 {Taylor,B (1918)-Rodriguez,A ICCF 2019 1/2-1/2 (36)}) (3... a5 4. Nc3 Na6 5. e4 Be7 6. Nf3 Nf6 7. Bd3 O-O 8. O-O Bg4 9. h3 Bh5 10. Be3 Nd7 11. a3 h6 12. Be2 Ndc5 13. Nd2 Bg6 14. Bg4 Bg5 15. Re1 {Andersen,J (2130)-Scholz,G (2141) ICCF 2008 1/2-1/2 (93)}) (3... Bf5 4. g3 Nf6 5. Bg2 Be7 6. Nf3 O-O 7. O-O Ne4 8. Qc2 Nd7 9. Nfd2 Nxd2 10. Bxd2 Qe8 11. Nc3 a6 12. a3 f6 13. b3 Bxc2 14. Be4 Bxe4 {0-1 (14) Benson,K-Buganza,N ICCF 2019}) 4. e4 (4. Nc3 Nf6 5. g3 ( 5. f4 Be7 6. Nf3 Ne4 7. Qc2 Nxc3 8. Qxc3 e4 9. Ng5 O-O 10. Be3 Bxg5 11. fxg5 f4 12. Bd4 Qxg5 13. Rg1 c5 14. Bf2 e3 15. Bxe3 fxe3 16. O-O-O Nd7 {Paulus,K (1572) -Ottolini,G (2109) ICCF 2016 0-1 (25)}) 5... g6 (5... Nbd7 6. Bg2 a5 7. f3 Nc5 8. Qc2 Be7 9. e4 fxe4 10. Nxe4 Ncxe4 11. fxe4 O-O 12. Nf3 b6 13. O-O Nh5 14. Be3 Bd7 15. a4 Qe8 16. b3 Qg6 17. Rf2 {Frydendal,O (1912)-Pohjosmäki,R ICCF 2007 1/2-1/2 (25)}) (5... Be7 6. Bg2 c5 7. f3 Na6 8. Nh3 Nc7 9. a4 O-O 10. O-O Na6 11. Nf2 Nb4 12. Bd2 Qe8 13. Qb3 f4 14. gxf4 exf4 15. Bh3 Qg6+ 16. Kh1 Nc2 17. Bxc8 {Spasov,S (2278)-Monov,A (2226) ICCF 2017 1-0 (70)}) 6. Bg2 Bg7 7. e4 (7. Nf3 O-O 8. O-O a5 9. Bg5 h6 10. Bd2 g5 11. Qc2 Na6 12. a3 Nc5 13. Rad1 f4 14. Be1 Ng4 15. Nd2 fxg3 16. hxg3 Qe8 17. Bf3 Qh5 18. Bxg4 Bxg4 {Debnár,I (2195)-Häusler,K (2222) ICCF 2009 1/2-1/2 (47)}) 7... O-O 8. exf5 gxf5 9. Nge2 a5 10. f3 Na6 11. Be3 Bd7 12. O-O Qe8 13. Qd2 Qg6 14. Kh1 Rae8 15. b3 b6 { Spasov,S (2247)-Bocheva,M (2295) ICCF 2017 1/2-1/2 (38)}) (4. g3 Nf6 5. Bg2 Be7 6. Nf3 a5 (6... O-O 7. O-O a5 8. b3 Ne4 9. e3 Bd7 10. Bb2 Bf6 11. Nbd2 Nc5 12. Qc2 c6 13. Ne1 e4 {0-1 (13) Featherstone,P-Clark,S (1892) ICCF 2019}) 7. Nc3 O-O 8. O-O Na6 9. b3 (9. Qc2 Bd7 10. Ng5 Qc8 11. a3 Nc5 12. Rb1 a4 13. Be3 h6 14. Bxc5 hxg5 15. Bb4 f4 16. Rbe1 Bh3 17. Rd1 Qd7 18. f3 Bf5 19. e4 fxe3 20. Qe2 g4 {Solar,J (2251)-Murin,P (2331) ICCF 2015 1/2-1/2 (29)}) (9. Ne1 Nd7 10. Rb1 Bg5 11. Nd3 e4 12. Nf4 Ne5 13. b3 Bd7 14. Nb5 Nc5 15. Qc2 Bxb5 16. cxb5 Qe7 17. Rd1 Rfe8 18. Be3 Bxf4 19. Bxf4 Qd7 20. a4 Qf7 {Koskinen,P (2212)-Díaz Castañet,J (2135) ICCF 2012 0-1 (78)}) 9... Nc5 10. Re1 Bd7 11. e4 Nfxe4 12. Nxe4 Nxe4 13. Bb2 Nc5 14. a3 f4 15. b4 Na4 {Davis,J (1160)-Nikiforov,O ICCF 2021 0-1}) (4. Nf3 e4 5. Nd4 c5 6. Nb5 Nf6 7. Bg5 Be7 8. Bf4 O-O 9. e3 a6 10. N5c3 Nbd7 11. Be2 Nb6 12. O-O Bd7 13. a3 a5 14. a4 Be8 15. b3 Nbd7 {Leber,D (1524)-Stetson,M ICCF 2015 0-1 (41)}) 4... fxe4 (4... Nf6 5. exf5 Bxf5 6. Nc3 Be7 7. Nge2 O-O 8. Ng3 Bg6 9. Bd3 Qe8 10. O-O Na6 11. Bb1 Bxb1 12. Rxb1 Qg6 13. b4 c6 14. dxc6 bxc6 15. Qa4 Nb8 16. Be3 {Spasov,S (2195)-Richards,H ICCF 2015 1-0}) 5. Nc3 Nf6 6. Nge2 Bf5 (6... Na6 7. Ng3 Be7 8. Ncxe4 Nxe4 9. Nxe4 O-O 10. Bd3 c6 11. O-O Bf5 12. Bb1 Nc7 13. a4 a5 14. Be3 cxd5 15. cxd5 Na6 16. Qd2 Nb4 17. Ra3 Rc8 18. Rc3 {Kovalev,I-Kireev,V (2170) ICCF 2012 1/2-1/2 (33)}) (6... Be7 7. Ng3 O-O 8. Be2 a5 9. Be3 Qe8 10. O-O Qg6 11. Qc2 Na6 12. a3 Bd7 13. Ncxe4 Ng4 14. Bxg4 Bxg4 15. f3 Bd7 16. b3 h5 17. Ne2 h4 18. N2c3 {Pyrich,G (2193)-Ambirk,J (2011) ICCF 2012 1/2-1/2 (31)}) 7. Ng3 Bg6 8. Bg5 (8. h4 h5 9. Bg5 Be7 10. Bxf6 Bxf6 11. Ngxe4 Nd7 12. Bd3 Bf7 13. g3 Qe7 14. Nb5 Qd8 15. O-O a6 16. Nbc3 Qe7 17. Nxf6+ Nxf6 18. Bf5 O-O 19. Qd3 Rad8 {De Velez,G-Kappe,D ICCF 2009 0-1}) 8... Be7 (8... Nbd7 9. Ncxe4 Be7 10. Bxf6 {1-0 (10) Taylor,B (1918)-Merrheim,X (2039) ICCF 2019}) 9. Bxf6 (9. h4 O-O 10. h5 Bf7 11. h6 g6 12. Bxf6 Bxf6 13. Ngxe4 Nd7 14. Be2 a6 15. Qc2 Be7 16. O-O-O Nf6 17. Nxf6+ Bxf6 18. Kb1 c5 19. dxc6 bxc6 20. Ne4 d5 {Cumming,D (2244)-Hughes,G (1777) ICCF 2014 1-0 (40)}) 9... gxf6 10. h4 Qd7 (10... h5 11. Be2 f5 12. Bxh5 Bxh5 13. Nxh5 Bxh4 (13... Rh7 14. g4 Bxh4 15. Ng3 Qg5 16. Nxf5 Nd7 17. Nxe4 Qf4 18. Qe2 O-O-O 19. Kd1 Rdh8 20. Kc2 b6 21. Rag1 Nc5 22. Nxc5 bxc5 23. Rg2 Bg5 24. Rxh7 Qc1+ 25. Kb3 {Kovalev,I-Lanin,B (2094) ICCF 2012 1-0 (44)}) 14. g3 Bg5 15. g4 Nd7 16. gxf5 Nf6 17. Qe2 Qe7 18. Kd1 O-O-O 19. Kc2 Qd7 20. Nxf6 Bxf6 21. Qxe4 Rdf8 22. Ne2 {Blondel,F (1841)-Mehlhorn,U (2353) ICCF 2017 1/2-1/2 (35)}) 11. f3 (11. c5 dxc5 12. Qb3 Qc8 13. Ncxe4 a6 14. O-O-O b5 15. Qa3 O-O 16. Bxb5 Kh8 17. Be2 Qb7 18. Qf3 f5 19. Nd2 e4 20. Qf4 Qxd5 21. Ndxe4 Qe6 22. Nc3 Bd6 { Brisson,P (2082)-Kroll,O (2220) ICCF 2012 1/2-1/2 (39)}) (11. Qb3 c6 12. c5 f5 13. Bc4 Rf8 14. Rd1 Rf6 15. dxc6 bxc6 16. h5 Bf7 17. Bxf7+ Rxf7 18. cxd6 Bd8 19. Na4 Bb6 20. h6 Bd4 21. Rh5 Na6 22. Nxf5 Rxf5 {Walther,J (2231)-Lanin,B (2150) ICCF 2013 1-0 (33)}) 11... exf3 12. gxf3 f5 (12... h5 13. Qb3 c5 14. O-O-O f5 15. Bd3 Na6 16. Rdg1 O-O-O 17. a3 Rdf8 18. Qc2 Nc7 19. Qd2 Bd8 20. f4 e4 21. Bf1 Qh7 22. Bh3 Kb8 23. Bf1 Ne8 24. Qg2 {Galjé,H (2287)-Lanin,B (2072) ICCF 2012 0-1 (41)}) 13. h5 Bf7 14. Bd3 e4 15. fxe4 f4 16. Nf5 Bf6 17. Qf3 Na6 18. Qxf4 O-O-O 19. Nh6 Qe7 20. Nxf7 Qxf7 21. e5 {1/2-1/2 (21) Herbert,G (1930) -Cook,D (2216) ICCF 2014 1 d4 d6: Tartakower System-and Modern Defence}) 3... Nd7 (3... exd4 4. exd4 Nf6 (4... d5 5. Nf3 Bb4+ 6. Nc3 Nf6 7. Be2 Be6 8. O-O Bxc3 9. bxc3 h6 10. Ba3 Ne4 11. Re1 Nxc3 12. Qb3 Nxe2+ 13. Rxe2 {1-0 (13) Hoffman,D-Wright,D (1618) ICCF 2015}) (4... g6 5. Nf3 (5. Be2 Bg7 6. Nf3 h6 7. Qd2 Ne7 8. b3 O-O 9. O-O Nbc6 10. Na3 d5 11. Nc2 Bg4 12. Bb2 dxc4 13. bxc4 Nf5 14. Rad1 Re8 15. h3 Bxf3 16. Bxf3 Qh4 {Andersen,J (2201)-Ott,P (2110) ICCF 2017 1/2-1/2}) 5... Bg4 6. Bd2 Bg7 7. Be2 Ne7 8. h3 Bxf3 9. Bxf3 Nbc6 10. Bc3 O-O 11. O-O d5 12. cxd5 Nxd5 13. Na3 Qg5 14. h4 Nxc3 15. bxc3 Qxh4 16. Rb1 { Dobroruka,V (1953)-Díaz Castañet,J (1944) ICCF 2020 0-1 (42)}) 5. Nf3 (5. Nc3 g6 6. Nf3 Bg7 7. Be3 Nc6 8. Bd3 O-O 9. O-O d5 10. a3 Be6 11. c5 b6 12. b4 Qd7 13. Rc1 Ng4 14. Bf4 Nxd4 15. Nxd4 Bxd4 16. Bb5 Nxf2 {Sinnerton,G-Kolkman,C (1877) ICCF 2017 1-0}) 5... Bg4 (5... h6 6. Nc3 Be7 7. Bd3 O-O 8. O-O Re8 9. h3 a6 10. Re1 Bd7 11. Bf4 Bf8 12. Qb3 b6 13. d5 Rxe1+ 14. Rxe1 Be8 15. Qc2 Nbd7 16. Bf1 g6 17. Nd4 {Lund,S (1315)-Jakobi,W (1582) ICCF 2019 1-0 (26)}) 6. Be3 Nbd7 7. Nc3 Be7 8. h3 Bh5 9. a3 O-O 10. Be2 Re8 11. b4 c6 12. c5 d5 13. O-O Bf8 {1/2-1/2 (13) Shenker,S-Savchenko,T ICCF 2020}) (3... Be7 4. Nc3 f5 5. b4 (5. Be2 c5 6. d5 Nf6 7. Nf3 O-O 8. O-O Na6 9. a3 Qe8 10. Qc2 Bd7 11. Nd2 Qg6 12. f3 h5 13. Rf2 h4 14. h3 Nh5 15. Bd3 Nc7 16. b4 b6 {Foote,I (1857)-Moore,R ICCF 2013 1/2-1/2 (36)}) 5... Nf6 6. Be2 O-O 7. Bb2 c6 8. Qb3 a5 9. bxa5 Na6 10. Nf3 e4 11. Nd2 Qxa5 12. O-O Nc7 13. Qc2 Ne6 14. d5 Nc5 15. Nb3 {García Gonzálvez,J (2133)-Borrás Julián,T (2087) ICCF 2020 1-0}) 4. Nc3 (4. Be2 Qg5 5. g3 g6 6. Bf3 Bg7 7. Nc3 Nh6 8. Nge2 O-O 9. Bg2 Qd8 10. O-O (10. b3 f5 11. dxe5 dxe5 12. Ba3 Re8 13. Qc2 c6 14. O-O Qa5 15. Bb2 Nf6 16. Rad1 Nf7 17. Na4 Qc7 18. Qc1 e4 19. Rd2 {1/2-1/2 (17) Camacho Domínguez,F (2284)-Sánchez de Ybargüen Gutiérrez, L (2261) ICCF 2017}) 10... exd4 11. Nxd4 Nc5 12. b3 Re8 13. Ba3 c6 14. Qc2 Qe7 15. h3 a6 {Castilho,M (2121)-Galacki,L (2059) ICCF 2017 1/2-1/2 (29)}) (4. Bd3 g6 (4... Ngf6 5. Nf3 e4 6. Be2 exf3 7. Bxf3 Be7 8. e4 O-O 9. O-O c6 10. h3 c5 11. Re1 cxd4 12. Qxd4 Ne5 13. Nd2 Be6 14. b3 Nfd7 15. Be2 Nc6 16. Qe3 { Heineccius,A (1392)-Harman,K (1685) ICCF 2017 0-1}) 5. b3 Bg7 6. Ne2 Ngf6 7. Nbc3 c6 8. Bc2 O-O 9. O-O Re8 10. Bb2 a6 11. Qd2 b5 12. dxe5 dxe5 13. Rfd1 Qb6 14. Rab1 a5 15. cxb5 cxb5 {Hildebrand,G (2325)-Scholz,G (2229) ICCF 2016 1/2-1/ 2 (33)}) (4. Ne2 g6 5. g3 Bg7 6. Bg2 exd4 7. exd4 Ne7 8. Nbc3 O-O 9. O-O c6 10. b3 Nf6 11. Re1 Re8 12. h3 d5 13. Bg5 dxc4 14. bxc4 h6 15. Bf4 Be6 {Brandberg,J (2277)-Arppi,H (2278) ICCF 2017 1/2-1/2 (25)}) 4... g6 (4... f5 5. Bd3 g6 6. Nge2 Bg7 7. O-O Nh6 8. b4 a5 9. b5 O-O 10. f3 Re8 11. Rb1 Nf7 12. Bd2 exd4 13. exd4 c5 14. bxc6 bxc6 15. Re1 Ba6 16. Qc2 {Martins Barriga,F (2231)-Rinaldi,C (2118) ICCF 2016 0-1 (38)}) 5. Nf3 Bg7 6. Be2 (6. d5 Ne7 7. e4 O-O 8. Be2 f5 9. O-O Nc5 10. Qc2 fxe4 11. Ng5 Nf5 12. Ncxe4 Nd4 13. Qd1 Nxe4 14. Nxe4 Nxe2+ 15. Qxe2 Bf5 16. Bg5 Qd7 17. Rad1 Rae8 {Asikanius,K (1827)-Mikkonen,M (1943) ICCF 2015 0-1 (40)}) 6... Ne7 7. O-O (7. d5 O-O 8. Nd2 f5 9. e4 c6 10. O-O Nf6 11. h3 Bd7 12. a4 Qc7 13. Re1 Rac8 14. b4 a5 15. dxc6 Bxc6 16. b5 Be8 17. Ba3 Rd8 18. Rc1 Bh6 {Almarza Mato,C (2169)-Blondel,F (1695) ICCF 2020 1-0 (38)}) (7. dxe5 dxe5 8. e4 O-O 9. Nd5 c6 10. Nc3 Nc5 11. Qxd8 Rxd8 12. Bg5 Kf8 13. Rd1 Rxd1+ 14. Kxd1 Ne6 15. Bd2 h6 16. Kc2 b6 17. a4 f5 18. Re1 Nd4+ {De Backer,Y (1675)-Lanin,B (2132) ICCF 2021 0-1 (54)}) 7... O-O 8. e4 (8. h3 a5 9. Qc2 Nf5 10. Rd1 Re8 11. Bf1 c6 12. b3 Rb8 13. dxe5 Nxe5 14. Nxe5 Bxe5 15. Bb2 b6 16. g3 Qg5 17. Rd3 d5 18. Bg2 Ba6 19. Qd2 Qh6 {Bondars,G (2337)-Macs,O (2103) ICCF 2013 1-0 (33)}) (8. Re1 Re8 9. d5 a5 10. e4 f5 11. Bg5 h6 12. Be3 Kh7 13. Bd3 f4 14. Bd2 Nc5 15. Bc2 g5 16. h3 Ng6 17. Nh2 Nh4 18. Na4 Nd7 19. Rc1 Rg8 { Burgarth,U (2455)-Ritsema,R (2428) ICCF 2015 1/2-1/2 (44)}) (8. Qc2 Nc6 9. Rd1 f5 10. Qb3 e4 11. Ne1 Nf6 12. Nc2 Qe7 13. Bd2 Qf7 14. Rdc1 Ne7 15. d5 c5 16. Qa3 g5 17. b4 f4 18. bxc5 f3 19. cxd6 Ng6 {Reede,A (2036)-Eintalu,J (2358) ICCF 2018 0-1 (39)}) 8... h6 9. Be3 f5 10. exf5 Nxf5 11. Qd2 exd4 12. Bxd4 Nxd4 13. Nxd4 Ne5 {Kolek,P (2203)-Pasta,P (2156) ICCF 2018 1/2-1/2 (58)}) (2. Nc3 e5 (2... d5 3. Bg5 (3. e4 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 c5 7. Nf3 Nc6 8. Be3 cxd4 9. Nxd4 Nxd4 10. Bxd4 Be7 11. Bb5+ Bd7 12. Qe2 O-O 13. O-O-O Bxb5 14. Qxb5 Qc8 {Hackenberg,T (2114)-Díaz Castañet,J (1944) ICCF 2020 1/2-1/2 (63)}) 3... h6 4. Bh4 c6 5. e3 Qb6 6. Rb1 Bf5 7. Bd3 Bxd3 8. cxd3 e6 9. Bg3 Nf6 10. Nf3 Be7 11. O-O O-O 12. Na4 Qa6 {0-1 (12) Nicotera,A (2203)-Di Salvio,G ICCF 2014}) (2... Bf5 3. e3 Nd7 4. Bc4 e6 5. Bd3 Bxd3 6. Qxd3 Ngf6 7. e4 Be7 8. Nf3 c6 9. Be3 h6 10. b3 e5 11. O-O Nh7 12. Rad1 O-O 13. h3 g5 14. Qd2 {Aymard,M (2132)-Humbert,P ICCF 2009 1-0 (43)}) (2... g6 3. Bg5 h6 4. Bh4 Bg7 5. e3 Be6 6. d5 Bd7 7. Bd3 c6 8. e4 Qb6 9. Qd2 Qxb2 10. Rb1 Qxc3 11. Rxb7 Qa1+ 12. Ke2 cxd5 13. exd5 Qxa2 14. Qb4 {Dutt,B-Ylönen,O (1591) ICCF 2009 0-1 (26)}) (2... Nf6 3. Bf4 Nbd7 4. Nf3 c5 5. e3 a6 6. a4 d5 7. Be2 e6 8. O-O Be7 9. a5 O-O 10. h3 Re8 11. Bg3 cxd4 12. Qxd4 Nb8 13. Qa4 Nc6 14. Rfd1 {Johnson,S-Morihama,N (2296) ICCF 2021 1/2-1/2 (53)}) (2... Nd7 3. e4 e5 4. f4 c6 5. Nf3 exd4 6. Qxd4 Qb6 7. Be3 Qxb2 8. Rb1 Qa3 9. Nd2 Nb6 10. Be2 Nf6 11. O-O Ng4 12. Bxg4 Bxg4 13. f5 f6 14. Nc4 {Belov,P (2142)-Kleimenov,Y ICCF 2012 1-0 (27)}) 3. dxe5 (3. e4 exd4 4. Qxd4 Nc6 5. Bb5 Nf6 6. Bxc6+ bxc6 7. Bg5 Be7 8. e5 Ng4 9. Bxe7 Qxe7 10. h3 Nxe5 11. O-O-O O-O 12. Nf3 Nxf3 13. gxf3 Re8 14. Qe4 d5 {Hardwick,M (1236) -Evensen,C ICCF 2019 0-1 (42)}) 3... dxe5 4. Qxd8+ Kxd8 5. f4 (5. Nf3 f6 6. a3 Be6 7. e4 Nd7 8. Nd2 c6 9. Bc4 Bxc4 10. Nxc4 Kc7 11. Be3 Bc5 12. Ke2 Bxe3 13. Kxe3 Nf8 14. a4 Ne6 15. Ne2 Nh6 16. f3 Rhd8 {Thys,H (1758)-Romang,J ICCF 2018 1/2-1/2 (36)}) 5... exf4 6. Bxf4 c6 {0-1 (6) Elias,H (2075)-Westerman,H (2257) ICCF 2011}) (2. Bg5 h6 (2... Nd7 3. e3 Ngf6 4. Bd3 c6 5. c3 e5 6. Nd2 Be7 7. Bh4 O-O 8. h3 Re8 9. Ne2 Qc7 10. Bg3 Bf8 11. e4 a5 12. a4 g6 13. O-O Bh6 14. Nf3 {Anderson,J (1613)-McIntee,C (1758) ICCF 2008 1-0}) (2... c6 3. Nf3 Nd7 4. c3 Ngf6 5. Nbd2 g6 6. e4 h6 7. Be3 e5 8. dxe5 dxe5 9. Nc4 Qc7 10. Qc2 b5 11. Ncd2 Bc5 12. Bxc5 Nxc5 13. Nb3 Ne6 14. c4 {Reyes Cortés,R (1550)-Ramos Mora,J (1662) ICCF 2021 0-1 (46)}) (2... f6 3. Bh4 Nc6 4. c3 g5 5. Bg3 Nh6 6. h3 Bg7 7. e3 Nf5 8. Bd3 Nxg3 9. fxg3 h6 10. Qh5+ Kd7 11. d5 Ne5 12. Bf5+ e6 13. Bxe6+ Ke7 14. Bxc8 {Reyes Cortés,R (1614)-Santamaría Quintana,I (1082) ICCF 2019 1-0 (44)}) (2... g6 3. e3 Bg7 4. h3 c5 5. c3 Nf6 6. dxc5 dxc5 7. Qxd8+ Kxd8 8. Bb5 Bd7 9. Bc4 Nc6 10. Na3 Ne4 11. Bf4 e5 12. Bh2 a6 13. Bxf7 Nxf2 14. Kxf2 { Reyes Cortés,R (1590)-Ramos Mora,J (1699) ICCF 2020 1-0 (27)}) 3. Bh4 (3. Bf4 Nf6 4. Nc3 g5 5. Bg3 Bg7 6. e4 O-O 7. h4 g4 8. Bf4 Nbd7 9. Qd2 c5 10. Bxh6 Bxh6 11. Qxh6 cxd4 12. Nd5 Nxe4 13. Ne2 e6 14. Nef4 Ndf6 {Kolojeski,P (2145)-Coope, D (1777) ICCF 2017 1/2-1/2 (47)}) 3... g5 (3... c5 4. d5 g5 5. Bg3 Bg7 6. Nc3 Qb6 7. Rb1 Qxb2 8. Rxb2 Bxc3+ 9. Qd2 Bxd2+ 10. Kxd2 Nf6 11. c4 h5 12. f3 Nbd7 13. h4 g4 14. e4 Rg8 15. Bf4 {Anderson,J (1788)-Coope,D (1921) ICCF 2017 1/2-1/ 2 (43)}) 4. Bg3 Bg7 (4... Nf6 5. h3 Nc6 6. e3 e5 7. d5 Ne7 8. Bc4 Bg7 9. Nc3 O-O 10. e4 c6 11. Nge2 b5 12. Bb3 b4 13. Na4 Nxe4 14. Bh2 cxd5 15. Bxd5 Nxd5 16. Qxd5 {Reyes Cortés,R (1614)-González,J ICCF 2019 0-1 (27)}) 5. c3 Nc6 6. e3 Nf6 7. Bd3 e5 8. Nd2 exd4 9. cxd4 Be6 10. Ne2 Nd5 11. Nc3 Qe7 12. O-O h5 13. h3 Nxc3 {Tanis,C (2184)-Rajala,O (2101) ICCF 2015 1-0 (49)}) (2. Bf4 g6 (2... Nd7 3. Nf3 c5 (3... Ndf6 4. h3 (4. Nc3 Bf5 5. Nd2 Qd7 6. e4 Bg6 7. f3 O-O-O 8. Bb5 c6 9. Bd3 Nh5 10. Be3 e6 11. a4 f5 12. Nc4 f4 13. Bf2 d5 14. Ne5 Qe7 15. a5 Qg5 {Pinzón,N-Pereyra,D (1895) ICCF 2016 1-0}) 4... Bf5 5. g4 Bg6 6. Bg2 Qd7 7. O-O O-O-O 8. c4 Nxg4 9. hxg4 Qxg4 10. Be3 h5 11. Qb3 h4 {1-0 (11) Burmeister,F (2270)-Pereyra,D (1584) ICCF 2017}) 4. c3 Ngf6 5. h3 g6 6. Nbd2 Bg7 7. e4 cxd4 8. cxd4 O-O 9. Rc1 e5 10. dxe5 Nxe5 11. Be2 Nxf3+ 12. Bxf3 d5 13. O-O dxe4 14. Nxe4 {Krauß,H (2219)-Bertagna,I (2369) ICCF 2012 1/2-1/2 (26)}) (2... c6 3. c4 (3. h3 Qb6 4. b3 Nf6 5. e3 Bf5 6. Bd3 Bxd3 7. Qxd3 Nbd7 8. Nf3 e6 9. O-O Be7 10. c4 O-O 11. Nc3 Rad8 12. Rfe1 Rfe8 13. Bg3 h6 14. Rad1 Nh7 {Jones,R-Wilson, G (1919) ICCF 2013 1-0 (51)}) 3... Qb6 4. Qd2 c5 5. dxc5 Qxc5 6. e4 e5 7. Be3 Qc7 8. Bd3 Nd7 9. Nc3 Nc5 10. Nd5 Qd8 11. Ne2 Be6 12. Bc2 Nf6 13. Nxf6+ gxf6 14. b3 {Vinciguerra,R (1975)-Stocchi,O (1767) ICCF 2015 1-0 (29)}) (2... h6 3. e4 (3. h3 g5 4. Bh2 Bf5 5. Nf3 c6 6. Nc3 Qb6 7. Rb1 Nd7 8. e4 Bh7 9. Bd3 O-O-O 10. O-O Bg7 11. b4 Bxd4 12. Na4 Bxf2+ 13. Rxf2 Qc7 14. Nd4 e5 {Duvette,M (2063) -Pereyra,D (1601) ICCF 2017 1-0}) 3... g5 4. Bg3 Bg7 5. Nc3 Nd7 6. f3 Nf8 7. Qd2 Bd7 8. h4 g4 9. O-O-O h5 10. Kb1 c6 11. e5 d5 12. Bd3 Be6 13. Rf1 Qb6 14. Nge2 {Lorenz,B-Pereyra,D (1530) ICCF 2017 1-0 (29)}) (2... Be6 3. e3 g6 4. Nf3 Nc6 5. Be2 Nf6 6. O-O h5 7. h3 Qd7 8. c4 {1-0 (8) Glover,S-Limoli,P (1531) ICCF 2019}) (2... Bf5 3. e3 Nc6 4. Bd3 Bxd3 5. Qxd3 e5 6. Bg3 exd4 7. exd4 Qg5 8. Nf3 Qc1+ 9. Qd1 Qxb2 10. Nbd2 O-O-O 11. O-O Nxd4 12. Rb1 Qc3 13. Nxd4 Qxd4 14. Re1 {Ong,A (1448)-Buchmann,H (1792) ICCF 2017 0-1 (35)}) 3. e3 Bg7 4. c3 Nc6 5. Bd3 e5 6. Bg3 Nge7 7. Nf3 O-O 8. O-O h6 9. h3 f5 10. dxe5 dxe5 11. Bc4+ Kh7 12. Qe2 g5 13. Rd1 Qe8 {Kirsner,D-Kembuan,N ICCF 2017 0-1 (63)}) (2. f4 d5 (2... Nf6 3. e3 (3. Nf3 b6 4. e3 g6 5. Bd3 Bb7 6. Nbd2 Bg7 7. O-O c5 8. c3 O-O 9. Re1 d5 10. a4 Nc6 11. Qe2 c4 12. Bb1 Na5 13. f5 Ne4 14. fxg6 hxg6 {Domenche Redondo,F (1804)-Ramos Mora,J (1719) ICCF 2019 1-0 (47)}) 3... Bf5 4. Bd3 g6 5. Nf3 Bg7 6. O-O e6 7. Nc3 d5 8. b3 Ne4 9. Bb2 Nxc3 10. Bxc3 Nd7 11. Qe2 O-O 12. Ne5 Nf6 13. Bb4 Re8 14. g4 {Domenche Redondo,F (1789)-Ramos Mora,J (1774) ICCF 2017 1/2-1/2 (39)}) 3. e3 Nf6 4. Bd3 (4. Nf3 c5 5. c3 e6 6. b3 Bd6 7. Be2 O-O 8. O-O b6 9. Bb2 Bb7 10. Ne5 Nbd7 11. Nd2 Rc8 12. Rc1 cxd4 13. exd4 Ne4 14. Nxe4 dxe4 15. Nc4 Be7 {Mogstad,O (2180)-Dawson,A (2052) ICCF 2016 1/2-1/2 (41)} ) 4... c5 5. c3 Bg4 6. Nf3 e6 7. Nbd2 Nc6 8. O-O Bd6 9. h3 Bh5 10. Qe2 O-O 11. dxc5 {1-0 (11) Domenche Redondo,F (1685)-Calvo Díaz,R (1718) ICCF 2021}) (2. d5 g6 (2... Nf6 3. Nc3 (3. c4 e6 4. Bg5 Be7 5. Nf3 Ne4 6. Qd4 Nxg5 7. Qxg7 Bf6 8. Qh6 Nxf3+ 9. gxf3 Ke7 10. Qe3 e5 11. Nc3 c5 12. Ne4 Nd7 13. Bh3 h5 14. O-O-O Qf8 {Magill,R (1156)-Ridout,P (1487) ICCF 2018 0-1 (38)}) 3... e6 4. e4 Be7 5. Nf3 O-O 6. Bd3 Nbd7 7. Be3 exd5 8. Nxd5 c6 9. Bg5 Nxd5 10. exd5 Bxg5 11. dxc6 Re8+ 12. Be2 Qa5+ 13. Nd2 bxc6 14. h4 {Magill,R (1321)-Harris,S (1593) ICCF 2016 0-1 (34)}) (2... c6 3. e4 cxd5 4. exd5 Nf6 5. c4 g6 6. Bg5 Bg7 7. Nf3 O-O 8. Bd3 Re8 9. Qd2 e6 10. h4 Qb6 11. Bh6 exd5+ 12. Kf1 Ng4 13. Bxg7 Kxg7 14. h5 {Magill,R (1581)-Secondi,A (1664) ICCF 2011 0-1}) 3. Nc3 (3. c4 Bg7 4. Nc3 Bxc3+ 5. bxc3 Nf6 6. Nf3 O-O 7. Bg5 Nbd7 8. e3 b6 9. Bd3 Bb7 10. Bxf6 Nxf6 11. Qe2 Bc8 12. h3 a5 13. g4 e6 14. g5 Nh5 {Magill,R (1489)-Pereyra,D ICCF 2015 0-1 (32)}) 3... Bg7 4. Nf3 Nd7 5. Be3 Ngf6 6. Qd2 c6 7. Bg5 Nxd5 8. Bh6 Bxh6 9. Qxh6 Qa5 10. Qg7 Rf8 11. Ng5 Nxc3 12. bxc3 Ne5 13. Nxh7 Qxc3+ {Magill,R (1343) -Brotherton,T (1912) ICCF 2016 0-1}) (2. e3 Nd7 (2... e6 3. Nf3 Nd7 4. Nc3 Ne7 5. g4 b6 6. Bd3 Bb7 7. O-O Ng6 8. b4 h5 9. g5 Bxf3 10. Qxf3 Qxg5+ 11. Qg3 Qxg3+ 12. fxg3 c6 13. h4 d5 14. b5 {Loison,F (1479)-Galatola,A ICCF 2020 0-1 (34)}) ( 2... g6 3. Nc3 Bg7 4. Nf3 Nf6 5. Bb5+ c6 6. Bd3 O-O 7. O-O b6 8. Ne2 c5 9. dxc5 bxc5 10. Rb1 Nc6 11. a3 Bg4 12. Nd2 Ne5 13. h3 Bd7 14. f4 {Wilding,A (1450) -Pardoe,I (1736) ICCF 2014 0-1 (47)}) (2... h6 3. Nc3 g5 4. Bb5+ c6 5. Ba4 Nd7 6. Nge2 Bg7 7. d5 cxd5 8. Nxd5 Qa5+ 9. Qd2 {1-0 (9) Santamaría Quintana,I (1495)-Muñoz Cabello,J (1670) ICCF 2010}) 3. Nd2 (3. b3 Ngf6 4. Nf3 c6 5. Bc4 Qc7 6. O-O e5 7. Ng5 d5 8. Bd3 e4 9. Be2 h5 10. f3 Ng4 11. f4 Be7 12. Bxg4 hxg4 13. Qxg4 Nf6 14. Ba3 Nxg4 {Miedema,H (887)-Ruffle,A (1593) ICCF 2019 0-1 (26)}) 3... e5 4. c3 Ngf6 5. Bd3 exd4 6. cxd4 Be7 7. f4 d5 8. Ngf3 b6 9. O-O Bb7 10. Ne5 Nxe5 11. fxe5 Ne4 12. Nxe4 dxe4 13. Bc2 O-O {Leber,D-Cain,L ICCF 2011 0-1 (60)}) (2. h3 e6 3. a3 c6 4. Nf3 f6 5. e4 g5 6. Ng1 b5 7. Qh5+ Kd7 8. Qf7+ Ne7 9. Qxf6 Rg8 10. Bxg5 Rg6 11. Qf4 h6 12. Bh4 Bb7 13. d5 a6 {Hardwick,M (1304) -Roberts,S ICCF 2020 0-1 (44)}) (2. b3 Nf6 3. Bb2 Nbd7 4. Nd2 e5 5. e4 Be7 6. Ngf3 exd4 7. Nxd4 c5 8. Nf5 O-O 9. Bd3 Ne5 10. Nxe7+ Qxe7 11. Be2 b6 12. O-O Bb7 13. f3 Rfd8 {McLaughlin,E (1430)-Moujan,P (1768) ICCF 2018 1-0 (48)}) 2... e5 (2... c6 3. Bg2 Qc7 (3... h6 4. Nf3 Nf6 (4... Nd7 5. O-O e6 6. b3 d5 7. Nc3 f6 8. a3 g5 9. b4 b5 10. e4 Nb6 11. Bd2 h5 12. e5 Be7 13. a4 Nc4 14. axb5 cxb5 15. Nxb5 a6 16. Nd6+ {Anderson,L (1193)-Jacobs,G (1468) ICCF 2016 0-1 (51)}) 5. O-O Bg4 6. c4 Nbd7 7. Nc3 Bxf3 8. exf3 e5 9. d5 c5 10. Re1 Be7 11. f4 O-O 12. fxe5 Nxe5 13. f4 Nxc4 14. Qe2 Nxb2 15. Bxb2 {Polyakov,D-Brumec,F ICCF 2011 1-0 (32)}) 4. Nf3 Bf5 5. O-O Nd7 (5... e6 6. c4 Nd7 7. Nc3 O-O-O 8. d5 exd5 9. cxd5 Nb8 10. Nd4 Bd7 11. dxc6 Nxc6 12. Be3 Nxd4 13. Qxd4 b6 14. Rfc1 Ne7 15. Nd5 Nxd5 16. Qxd5 Qxc1+ 17. Rxc1+ {Sharpe,S (2330)-Pereyra,D (1530) ICCF 2017 1-0}) 6. c4 O-O-O 7. d5 c5 8. Nc3 a6 9. Nh4 Bg6 10. Nxg6 hxg6 11. Ne4 f6 12. Bd2 b6 13. Rb1 g5 14. Qa4 {Walsh,P (1550)-Pereyra,D (1584) ICCF 2017 1-0}) (2... Nc6 3. Bg2 Nf6 4. c4 e6 5. Nf3 Be7 6. Nc3 O-O 7. O-O Na5 8. Qd3 d5 9. b3 b6 10. cxd5 exd5 11. Bf4 Re8 12. Ne5 Be6 13. Rfb1 Bb4 14. a3 {Penide Pérez,M-Neijhof, R (2010) ICCF 2006 1/2-1/2 (76)}) (2... Nd7 3. Bg2 c6 4. Nf3 Qc7 5. c4 Ndf6 6. O-O Bf5 7. e4 Bg6 8. e5 Nd7 9. exd6 exd6 10. Re1+ Ne7 11. Nc3 O-O-O 12. d5 c5 13. Nb5 Qb6 14. a4 {Marten,G (1899)-Pereyra,D (1601) ICCF 2017 1-0 (27)}) 3. dxe5 dxe5 (3... Nc6 4. exd6 cxd6 5. Bg2 Nge7 6. c4 Bf5 7. e4 Be6 8. b3 Qa5+ 9. Bd2 Qc5 10. Ne2 Ng6 11. O-O O-O-O 12. Nbc3 h5 13. Be3 Qe5 14. f4 Qf6 15. f5 { Mascaró Pastor,M (1606)-Sanchez Aguirregomezcorta,X (1297) ICCF 2017 1-0 (32)}) 4. Qxd8+ Kxd8 5. Bg2 (5. Nc3 Be6 (5... Nc6 6. Bg5+ f6 7. O-O-O+ Bd6 8. Be3 Be6 9. Bg2 Nge7 10. Bc5 Nc8 11. Bxd6 Nxd6 12. Bxc6 bxc6 13. f4 exf4 14. gxf4 Bd7 15. Nf3 Re8 16. Rhe1 Rb8 17. e4 {Bruce,R (1902)-Jefferson,N (2055) ICCF 2015 1/ 2-1/2 (74)}) (5... c6 6. f4 Nd7 7. Nf3 Bd6 8. Bd2 Ngf6 9. O-O-O Kc7 10. Bh3 exf4 11. gxf4 Nc5 12. Bxc8 Raxc8 13. Ng5 Rcf8 14. e4 Nh5 15. e5 Be7 16. Nce4 h6 17. Nxc5 {Tramacere,S (2091)-Mehlhorn,U (2353) ICCF 2017 1/2-1/2 (44)}) (5... Bb4 6. Bg5+ Ke8 7. O-O-O Ne7 8. Nb5 Ba5 9. Bg2 a6 10. Na3 Bb6 11. Bxe7 Kxe7 12. e3 c6 13. Nf3 f6 14. Rd2 Be6 15. b3 Nd7 16. Rhd1 Ba5 17. Re2 {Bertaggia, M-Ottolini,G (2109) ICCF 2016 0-1 (47)}) 6. Bd2 (6. f4 Nc6 7. fxe5 Nxe5 8. Nf3 Nxf3+ 9. exf3 Nf6 10. Bf4 Bc5 11. Nb5 Nd5 12. Be5 c6 13. Nd4 Bd7 14. Bxg7 Re8+ 15. Kd1 f6 16. c3 Ne3+ 17. Kd2 Nxf1+ {Bruce,R (1941)-Clark,S (1892) ICCF 2019 1/2-1/2 (41)}) 6... c6 7. f4 exf4 8. gxf4 Kc8 9. e4 f6 10. Nge2 Bc5 11. Na4 Be7 12. Rg1 g6 13. Nd4 Bd7 14. O-O-O Nh6 15. f5 g5 16. Ne6 Nf7 {Sánchez,M (2358) -Díaz Castañet,J (2268) ICCF 2007 1-0 (41)}) 5... c6 6. f4 (6. Nc3 f6 7. f4 Nd7 8. Nf3 Bb4 9. O-O exf4 10. Bxf4 Bc5+ 11. Kh1 Ne7 12. Rad1 Ng6 13. Ne4 Nxf4 14. gxf4 Bb6 15. Bh3 Kc7 16. Nd6 Rd8 17. e4 a5 {Baciak,M (2202)-Lanin,B (2039) ICCF 2015 1/2-1/2 (35)}) 6... exf4 7. Bxf4 Ne7 8. Nc3 Ng6 9. O-O-O+ Nd7 10. Be3 Kc7 11. Nf3 (11. Nh3 Nde5 12. Nf4 f6 13. Kb1 Nxf4 14. gxf4 Nc4 15. Bd4 Bd6 16. b3 Na3+ 17. Kb2 Nb5 18. Nxb5+ cxb5 19. Rhf1 Bg4 20. Rd3 b4 21. Rg3 h5 22. e3 Bf8 {Lukásová,A (2303)-Lanin,B (2150) ICCF 2013 1-0 (42)}) 11... Nde5 12. Rhf1 f6 13. a3 Nc4 14. Bg1 Be7 15. Nd4 Nge5 16. a4 Ng4 17. Rf3 Nge5 18. Rff1 Ng4 19. Rf3 {1/2-1/2 (19) Kurpnieks,V (2170)-Macs,O (2103) ICCF 2013} *