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(c) Marek Trokenheim

1.b4 e5 2.Bb2 d6

(...)

3.a3 f6 (--> 1.b4 e5 2.Bb2 f6 3.a3 d6).

3.a3 Qf6 (--> 1.b4 e5 2.Bb2 Qf6 3.a3 d6).

3.a3 Nh6 4.c4 Qf6 5.e3 Ng4 6.Nf3 Be7 7.h3 Nh6 8.Be2 Bd7 9.0–0 Qg6 10.Kh2 Bc6 11.d4 e4 12.Ng1 Bf6 13.Nd2 0–0 14.Qc2 (better is 14.Bh5!? Qf5 15.g4+/–) 14...Re8= 15.d5 Bb2 16.Qb2 Bd7 17.Rac1 Nf5 18.Bg4 Nh4 19.f3? (19.g3 Bg4 20.hg4 Nf3 21.Ngf3 ef3 22.Nf3 Qg4=) 19...ef3 (better is 19...h5!?–+) 20.Ndf3 Bg4 (better is 20...Nf3 21.Bf3 Re3+=) 21.hg4?? (better is 21.Nh4 Qh5 22.Qf2=) 21...Qg4–+ 22.Nh4 Qh4 23.Nh3 Nd7 24.Qf2 Nf6?? 25.Qh4+– Re3 26.Rf3 Re5 27.Qg3 Ne4 28.Qh4 Rae8?? 29.Rcf1 f6 30.Nf2 Ng5 31.Nd3 Re4 32.Qg3 Nf3 33.Rf3 Kf7 34.c5 dc5 35.Nc5 R4e5 36.Ne6 Rd5 37.Nc7 Rg5 38.Ne8 Rg3 39.Kg3 Ke8 40.Rd3 Ke7 41.Kf4 g6 42.g4 g5 43.Kf5 h6 44.a4 b6 45.b5 Kf7 46.Rd7 Ke8 47.Ra7 (47.Ra7 Kd8 48.Rb7 Kc8 49.Rb6 Kd7 50.a5 h5 51.a6 Kc7 52.Rc6 Kd7 53.a7 Ke7 54.a8Q hg4 55.Qb7 Kd8 56.Rc8) 1–0. Fournier,Frederic – Grenza, Partie evaluee, 2008.

3.a4 a5 4.b5 (--> 1.b4 a5 2.b5 e5 3.Bb2 d6 4.a4).

3.a4 a6 4.c4 Be6 5.e3 f5 (5...Be7 6.Nf3= Nf6 7.Ng5 Bf5 8.Nc3 Nc6 9.b5 Nb4 10.Rc1; 5...Nf6 6.Nf3 Nc6 7.b5 Na5 8.Qc2 Qd7 9.d4 Bf5 10.Qc3) 6.Nf3 Nd7 (6...Nc6 7.b5 Na5 8.d3 Nf6 9.Bc3 c6 10.bc6) 7.d4 'White threatens to win material: d4xe5' (7.Nc3 Nh6 8.a5 Be7 9.Be2 0–0 10.0–0) 7...e4 'Black threatens to win material: e4xf3' (7...Nh6 8.Nc3 Be7 9.Be2 a5 10.de5) 8.Nfd2 (8.d5 Bf7 9.Nd4 Nh6+= (9...Ne5 10.Nf5) 10.Ne6) 8...Ngf6 '=' 9.Nc3 Be7 10.Be2 c6 'Controls b5+d5' 11.0–0 0–0 12.b5 d5 (12...Qc7 13.Qc2=) 13.Qb3 Qe8 (13...Bf7 14.Rfc1=) 14.Ba3 '+/=' 14...ab5 (14...Bf7 15.Be7 Qe7 16.c5+=) 15.ab5 Ba3 16.Ra3 Qe7 (16...dc4 17.Bc4 Ra3 18.Be6 Kh8 19.Qa3 Qe6 20.bc6 bc6 21.Rc1+=) 17.Rfa1 (17.Ra8 Ra8 18.bc6 bc6+/–) 17...Rab8 (17...Ra3 18.Qa3 c5 19.cd5 Nd5 20.Nd5 Bd5 21.Nb3+=) 18.Ra7 (18.c5 Ng4+/–) 18...Ng4 (18...c5 19.cd5 Bf7 20.Qa3+=) 19.Nf1 (19.h3 Nf2 20.Kf2 f4 21.cd5 fe3 22.Kg1 cd5 23.Nd5 Qg5 24.Qe3 Qd5 25.Ne4 Bf5+/–) 19...Qh4 (19...Qf7!?+=) 20.g3 '+/–' 20...Qh3 (20...Qh6 21.cd5 cd5 22.Nd5+/–) 21.cd5 '+–' 21...cd5 22.Bg4 (22.Nd5 Kh8 23.Bc4 Qh6+–) 22...fg4 (22...Qg4 23.b6+=) 23.Ne4 '+/–' (23.Nd5 is clearly inferior 23...Kh8–+) 23...Qh6 24.Nc3 (24.Nd6 Qf6 25.R1a2 b6+/–) 24...Nb6 25.Na4 (25.Ne2 Qf6 26.Nf4 g5+=) 25...Nc4 'Praise the knight!' (25...Qf6 26.Qb2 Na4 27.R7a4=) 26.Nc5 '+/=' 'White threatens to win material: Nc5xb7' 26...Bf5 27.Rb7 '+/–' 27...Rb7 28.Nb7 Be4 '?' 29.Nc5 '+–' 29...Bf3 30.Nd3 '??' 'throws away a nice position' 30...Qh3 '–+' 31.Ne1 Be2 '??' 'Black has a mate threat. A transit from better to worse' 32.Nd3 '??' 'makes life more difficult' 32...Bf1 '–+' 33.Rf1 Qf1 '!!' 'blam!' 34.Kf1 Nd2 35.Ke2 Nb3 0–1. Dombrowsky,Michael – Aguilar,Romulo, American op, 1974.

3.a4 b6 4.a5 Bb7 5.ab6 cb6 6.e3 Be7 7.Qg4 Bf6 8.Nf3 Ne7 9.Bb5 Bc6 10.Na3 0–0 11.Qc4?? Bd5 12.Qe2=+ a6 13.Bd3? e4–/+ 14.Bf6 gf6 15.Be4 Be4 16.Nd4 Bg6 17.Nf3? Nbc6–+ 18.c3 Ne5 19.Ne5 fe5 20.e4?! d5 21.d3 de4 22.de4 a5 23.ba5 Ra5 24.0–0 Qa8 25.Nc2 Be4 26.Ra5 ba5 27.Ne3 Rd8 28.Qg4 Kh8 29.f3?! Bg6 30.Qg5 Nc6 31.h4 Rg8 32.h5? Bd3?? 33.Qf6+– Rg7 34.h6 Qg8 35.hg7 Qg7 36.Qg7 Kg7 37.Rd1 Bf5?? 38.Nf5 Kf6 39.Nd6 (39.Rd6 Kf5 40.Rc6 h5+–) 1–0. pinecrest1981 – Bute, Live Game Caissa's Web, 2006.

3.a4 Nc6 4.b5 Na5 5.Bc3 Nc4 6.e4 Be6 7.Bc4 Bc4 8.d3 Be6 9.Nf3 Bg4 10.0–0 Nf6 11.h3 Bh3 12.gh3 Nh5 13.Ne5 Qh4 14.Qg4 Qg4 15.Ng4 Nf4 16.Kh2 1–0. Wall,Bill – Pontihack, Microsoft Gaming Zone, 1999.

3.a4 Nd7 4.d4 e4 5.Nc3 Ngf6 6.d5 c6 7.e3 cd5 8.Nd5 Nd5 9.Qd5 Nf6 10.Bb5+– Bd7 11.Bf6 gf6 12.Qe4 Be7 13.Qb7 Rb8 14.Bd7 Qd7 15.Qb8 Qd8 16.Qa7 0–0 17.b5 d5 18.b6 Bc5 19.a5 f5 20.Ne2 Qa8 21.Qa8 Ra8 22.b7 Ra7 23.b8Q Kg7 24.Nf4 Kf6 25.Qh8 Kg5 26.Qg7 Kh4 27.Qg3# 1–0. Trkn – guest2326, ICC, 2004.

3.a4 Be6 4.e4 Be7 5.c4 Nc6 6.b5=+ Nb8 7.Nf3 Nf6 8.Nc3 a6 9.Be2 ab5 10.ab5 Nbd7 11.d4 0–0 12.d5 Bg4 13.h3 Bf3 14.Bf3 Nc5 15.0–0 Ra1= 16.Ba1 Qd7+= 17.Qc2 c6 18.bc6 bc6 19.Rb1 Rc8 20.Rb6 Bd8 21.dc6 Rc6 22.Rc6+= Qc6 23.Nb5 Bb6 24.g4 h6 25.Bb2 Ne6 26.Ba3 Nf4=+ 27.Bg2? Ne8 28.Bc1 g5 29.Ba3 Bc5= 30.Bc5 Qc5 31.Bf1 Nf6 32.Kh2 h5 33.Kg3 h4 34.Kf3? Ne8 35.Qd2=+ f6 36.Qe3 Qb4=+ 37.Qa3?? Qb1–+ 38.Be2 Nh3 39.Nd6?? Nd6 40.Qd6–/+ Ng1 41.Kg2?? Ne2 42.Qd8 Kf7 43.Qd7 ˝–˝. tirpitz (1805) – vaidasmp (1720), net–chess.com, 2005.

3.a4 Qf6 4.e3 c5 5.b5 a6 6.Nc3 ab5 7.Bb5 Bd7 8.Nd5 Qf5?? 9.Nc7+– Ke7 10.Na8 Bb5 11.ab5 g5 12.Ra7 Bg7 13.Rb7 Ke6 14.Nc7 Kd7 15.Nd5 Ke6 16.c4 Nd7 17.h3 g4 18.hg4 Qg5 19.Nh3 Qh4 20.g3 Qf6 21.g5 Qg6 22.Qg4 f5 23.Qf3 f4 24.ef4 Qb1 25.Ke2 Qb2 26.Qg4 Kf7 27.Qd7 Kg6 28.Qg7 Kh5 29.Ng1 (29…Kg4 30.Qd7) 1–0. muar1919 – tallyho950, Live Game Caissa's Web, 2004.

3.a4 Bg4 4.f3 Bf5 5.e4= Bg6 6.c4 Be7 7.Nc3 Bh4 8.g3= Nc6 9.gh4+/– Qh4 10.Ke2 Nd4 11.Ke3 Qg5 12.Kd3+– Ne7 13.Nd5 Nd5= 14.cd5 0–0? 15.Bd4 ed4 16.Kd4 Qe5+/– 17.Ke3 f5 18.d4 Qe7 19.Rc1 fe4= 20.Bh3 ef3 21.Be6 Kh8 22.Nf3 c6 23.Kd2 cd5? 24.Bd5+– Rae8 25.Re1 Qf6 26.Re8 Re8 27.Rc7 Qf4 28.Kc3 Re3 29.Kb2 Re8 30.Rb7 a5 31.b5 Qf8 32.Ra7 Bh5 33.Ra5 Qf4 34.b6 Bf3 35.Bf3 Qh2 36.Kb1 Rb8 37.Ra8 d5 38.b7 Qc7 39.Bd5 Qb6 40.Qb3 Qg6 41.Kb2 Qd6 42.Qc4 Qb6 43.Ka2 (43.Ka2 Qd8 44.Rb8 g6 45.Qc8 Kg7 46.Qd8 Kh6 47.Qh4 Kg7 48.Rg8#) 1–0. Wall,Bill – Zap, internet, 2005.

3.b5 Qe7 4.Nc3 f5 5.e4 f4 6.Nd5+/– Qd8 7.d4 Nf6 8.de5+– Nd5 9.ed5 Bf5 10.Bd3 Qe7?? 11.Bf5 de5 12.Qe2 Nd7 13.Nf3 0–0–0 14.Ne5 Qb4 15.c3 Qa5 16.Nc4 Qb6 17.Nb6 (17.Nb6 cb6 18.Bc1+–) 1–0. miehnekort – hcetos, Yahoo, 2005.

3.b5 f6 4.e4= Be6 5.Nf3 c6 6.Be2 g5 7.0–0 h5 8.c4 h4 9.d4+/– h3 10.g3 g4 11.Nfd2 f5 12.bc6 bc6 13.de5 de5 14.ef5 Bf5 15.Bg4 Bg4 16.Qg4 Nf6?! 17.Qg6 Ke7 18.Be5 (18.Be5 Nbd7 19.Nf3 Ne5 20.Ne5+–) 1–0. Wall,Bill – Murman, internet, 2002.

3.Qc1 Nf6 4.Nf3 Nc6 5.b5 Nd4 6.Nd4 ed4 7.Bd4 Be7 8.c4 c5 9.bc6 bc6 10.e3 c5 11.Bb2 Ng4 12.Bg7 Rg8 13.Bc3 1–0. Wall,Bill – Aquinatis, Microsoft Gaming Zone, 1999.

3.c3 (--> 1.b4 e5 2.c3 d6 3.Bb2).

3.Nc3 a5 4.ba5 Ra5 5.a3 Nf6 6.e3 Be7 7.Bc4 c6 8.Nf3 d5 9.Bb3 Na6 10.d4 e4–/+ 11.Ne5 Nc7 12.a4 0–0 13.0–0 Bd6 14.f3 ef3 15.Qf3 Be5 16.de5 Ne4 17.Ne4+– de4 18.Qe4 Nd5 19.Rad1 Qg5 20.Rf3 Bg4 21.Rg3 Bf5?? 22.Qd4 Qe7 23.e6 f6 24.e4 Nf4 25.Qd2 Ng2 26.Qa5 Be4 27.Rg2 Bg2 28.Kg2 c5 29.Rd8! Rd8 30.Qd8! Qd8 31.e7 c4 32.ed8Q Kf7 33.Bc4 Kg6 34.Qd3 Kh5 35.Qh7 Kg5 36.Qg7 Kf4 37.Qf6 Ke3 38.Qd4# 1–0. hercules53 – johnny, Live Game Caissa's Web, 2004.

3.Nc3 Bd7 4.Nf3= Bg4 5.h3 Bf3 6.ef3 Nf6 7.Bc4 d5–/+ 8.Bb3 Bb4 9.0–0 Nc6 10.a3 Ba5 11.Ba4 Qd6 12.Nb5=+ Qc5 13.Bc3?? 0–0–0 14.Ba5 Na5–+ 15.c3 a6 16.d4 Qc4 17.de5 Nh5?? 18.Qd4 ˝–˝. Goebel,Martin (1805) – Juha,Michael (1820), RSS4D easy–78, 2008.

3.Nc3 Be7 4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be7 4.Nc3).

3.Nc3 Bf5 4.e4= Bg6 5.Bc4 Nf6 6.d3 c6 7.h4 b5 8.Bb3 Be7 9.h5+= Bh5 10.Rh5 Nh5 11.Qh5 0–0 12.Nf3 g6 13.Qh6+/– Nd7 14.0–0–0 Re8 15.Rh1 Nf6?? 16.Ng5+– Bf8 17.Bf7 Kh8 18.Qh7! Nh7 19.Rh7 1–0. PawnPower – jamesbrain, internet, 2006.

3.d3 b5 4.Nf3 Nd7 (4...a5 5.Nbd2+=) 5.Nbd2 (5.a4 ba4 6.Nc3 Ngf6 7.Ra4 Be7+=) 5...c6 (5...Ngf6 6.e3=) 6.c4 (6.a4 Ngf6+=) 6...bc4 7.Nc4 (7.dc4 Ngf6+=) 7...d5= 8.Nce5 (8.Ncd2 Bd6=) 8...Bb4 (8...Ne5 9.Be5 Bb4 10.Nd2+=) 9.Nd2= Ne5 10.Be5 Nf6 11.Qc2 (11.Qa4 Qa5 12.Qa5 Ba5=) 11...Bd7 (11...0–0 12.a3 (worse is 12.Qc6 Ng4 13.Bd4 Qa5–+) 12...Ba5 13.e3–/+) 12.Bc3 (12.Rb1 Qe7 13.Bf6 gf6=) 12...Bc3 (12...c5 13.Bb4 cb4 14.a3–/+) 13.Qc3 0–0 14.e3 Qc7 (14...Rb8 15.Be2+=) 15.Be2= Rab8 16.0–0 Rb6 17.Rab1 Rfb8 18.Rb3 Bg4 19.Bg4 Ng4 20.Nf3 Rb3 (20...f6 21.Rc1=) 21.ab3+= Qb6 (21...f6 22.h3 Ne5 23.Ne5 fe5 24.Ra1+=) 22.h3 (better is 22.Rc1+/–) 22...Ne3?? (better is 22...Nf6+=) 23.fe3+– Qe3 (23...Qb3 24.Qe5 f6 25.Qd6+–) 24.Kh1 1–0. Pietraszko,Jakub (1605) – Drgas,Mariusz, Mistrzostwa Polski Amatorow Poland, 2012.

3.d3 Be6 4.Nd2 Be7 5.Ngf3 Nd7 6.g3 Nb6 7.Bg2 c6 8.0–0 Na4 9.Qc1 Nb2 10.Qb2 h5 11.a3 h4 12.c4 Bf6 13.Qc2 (13.Ne4 hg3 14.fg3 Be7+=) 13...e4 14.de4 (14.Ne4 Ba1 Discovered attack; 14.de4 Ba1 Discovered attack) 14...Ba1 15.Ra1 hg3 16.fg3 Qf6 17.Rf1 Qh6 18.h4 (18.Qd3–+) 18...f6?? (18...Qe3!? 19.Kh2 Nf6 20.Qb2–+) 19.b5 (19.Qd3!?–/+) 19...c5 20.a4 g5 21.a5 g4 22.Nh2? Qe3 23.Rf2 Qg3 24.a6 b6 25.Qb2?? Qh4 26.Bf3 g3 27.Rg2 gh2 28.Rh2 Qh2 (28...Qh2 29.Kf1 Qg3 30.e3 Rh2 31.Bh5 Kd7 32.Be8 Ke8 33.Nf3 Qf3 34.Ke1 Qh1) 0–1. Dejna,Miroslaw – Witbrodt,Jakub (1605), Ferie z szachami Poland, 2009.

3.d3 f6 4.c4 g5 5.Nc3 Nc6 6.Nf3 Nb4=+ 7.e3 Bg4 8.Be2= h5 9.0–0 Bf3 10.Bf3+/– g4 11.Be4 Qd7 12.d4 ed4 13.ed4+= 0–0–0 14.a3 Nc6 15.a4 f5 16.Bc6 Qc6 17.Nb5 Kb8?? 18.d5+– Qc4 19.Bh8 g3 20.fg3 Qc5 21.Bd4 Qb4 22.Ba7 Kc8 23.Bf2 Nf6 24.Rb1 Qa5 25.Na7 Kd7 26.Qf3 Qa4 27.Qf5 Ke7 28.Qe6 1–0. losertoo (1860) – sburritt, net–chess.com, 2006.

3.d3 Bg4 4.c4 g6 (4...Nf6 5.Nf3+=) 5.h3 Bc8 (5...Be6 6.Nf3=) 6.Nc3 b6 (6...Bg7 7.Nf3=) 7.a4 (7.d4 Nd7+=) 7...Nc6 (7...d5 8.Na2 d4 9.e3=) 8.b5+= Nd4 (8...Na5 9.e3+=) 9.e3 Nf5 10.Qf3 (10.a5 ba5 11.Qf3 Rb8+=) 10...Rb8 11.a5 Bb7 12.Qe2 Nh4 (12...c6 13.a6 Ba8 14.d4+=) 13.e4+/– g5 14.a6 Ba8 15.g3 (15.Nf3 Nf3 16.Qf3 c6+/–) 15...Ng6+= 16.Bg2 c5 (16...c6 17.Nf3+=) 17.Nf3 h5 18.Bc1 (18.0–0–0 Bh6+/–) 18...Bh6+= 19.Nd1 h4 (19...g4 20.Nd2+=) 20.gh4 (20.Ne3 Kd7+/–) 20...Nf4 (20...gh4!? 21.Be3 Kd7=) 21.Bf4 gf4 22.Rg1 Ne7 23.Bf1 (23.Ng5 Ng6+/–) 23...Ng6 The backward pawn on h4 becomes a target (23...Kd7 24.Nc3+=) 24.h5 Nh4 (24...Ne7 25.Nc3+=) 25.Nh4 Qh4 26.Qg4 Qe7 27.Nc3 Kd8 28.Kd1 (28.Nd5 Bd5 29.cd5 Kc7+=) 28...Kc7 29.Qf3 (29.Be2 Rbf8+=) 29...Rbg8= 30.Rg8 Rg8 31.Kc2 Qh4 (31...Kb8 32.Re1=) 32.Be2 Rg7 33.Rf1 Kd8 (33...Qe7 34.Kb1=) 34.Bd1 Ke8 35.Kb3 Kd8 36.Qh1 Kc7 37.Bg4 Kd8 1–0. Abou Zahr,Ezzeldine – Kfouri,Raymond, Beirut LBN, Men Ch semi–final, 2012.

3.d3 g6 4.Nf3 Bg7 5.e4 Nf6 6.Be2 0–0 7.0–0 c6 8.a4 a6 9.c4 Bd7 10.Nc3 Qe8 11.d4 ed4= 12.Nd4 Ne4 13.Ne4 Qe4 14.Rb1 b5 15.ab5+= cb5?? 16.cb5 Bb5?? 17.Nb5 ab5 18.Bb5 Rd8 19.Bd3 Qb7 20.Re1 Nc6 21.b5 Ne5+= 22.Be4 d5 23.Bd3 Nd3 24.Qd3 d4 25.Ba3 Qb6 26.Red1 Rac8 27.Bb2 Rd5 28.Ba1 Rcc5 29.g3 Rb5–/+ 30.Rb5 Rb5 31.Bd4= Bd4 32.Qd4 Qe6 33.Ra1 Qc6 34.h4 h5 35.Re1 Rb3 36.Qa1 Rf3 37.Re2 Rc3 38.Re1 Rc5 39.f3 Kh7 40.Qd4 Rc3 41.Re8?? Rc1–+ 42.Kf2 Qe8 43.Qd2 Ra1 44.Kg2 Qe6 45.Kf2 Ra2 (45...Ra2 46.Qa2 Qa2 47.Kf1 Qh2–+) 0–1. Schmitt,Cecilia – Ambrosio,Camili, Pan American–ch U12 Girls, 1998.

3.d3 h6 4.Nf3 Nf6 5.e4 c6 6.Nbd2 Qc7 7.a3 Be7 8.d4 Nbd7 9.Be2 0–0 10.0–0 b5 11.c4 a6 12.Qc2 Bb7 13.cb5 ab5 14.Bb5! Rfc8 15.Rfc1 c5 16.bc5+– dc5 17.de5 Nh5 18.Nc4 Ba6 19.Bd7 Qd7 20.Nb6 Qg4 21.h3 Qg5?? 22.Ng5 (22.Ng5 Bg5 23.Na8 Ra8 24.e6 fe6 25.Qc5+–) 1–0. miehnekort – faz_ori, Yahoo, 2005.

3.d4 Bd7 4.e4 Nf6 5.f3 Be6 6.Nd2 d5 7.de5+= Nfd7 8.g4?? Bb4 9.c3 Bc5 10.Ne2 Ne5–+ 11.Qc2 Qh4 12.Ng3 0–0 13.f4 Nc4 14.Nc4 dc4 15.f5 Bd7 16.Bc4 Qg4 17.Be2 Qh4 18.Qb3 b6 19.Rd1 Re8 20.Bf3? Bc6 21.Rd3? Be4 22.Be4 Re4 23.Kd1 Re3 24.Re3 Be3 25.Re1?? Qg4 26.Kc2=+ Qf3?? 27.Re3 Qe3 28.Qd5 Nd7?? 29.Qa8+/– Nf8 30.Ba3 h5?? 31.Qf8+– Kh7 32.Nh5 Qe2 33.Kb3 Qh5 34.f6 gf6 35.Be7 Qh6?? 36.Qf7+– Qg7 37.Qh5 Kg8 38.Qe8 Kh7 39.Bf8 Qg6 40.Qe7 Kg8 ˝–˝. Fritz,Marco – Kirstein,Michael, remoteschach.de, 2001.

3.d4 Bf5 4.de5 de5 5.Qd8 Kd8 6.c3 Nf6 7.g3 Be4 8.Nf3 Bf3 9.ef3= Nc6 10.b5 Na5 11.Nd2+= Bd6 12.Rd1 b6 13.Ne4+= Ne4 14.fe4 Ke7 15.Bg2 Nc4= 16.Bc1 a6 17.a4 ab5 18.ab5 Ra2 19.Bf1 Na3 20.Ba3 Ba3 21.Bh3 Rd8 22.0–0 Rd1=+ 23.Rd1 Bd6 24.c4 Rc2 25.Bf1 Bc5 26.Kg2 Rf2 27.Kh3 g6 28.g4 Be3 29.Kg3–/+ Rc2 30.Kf3 Bd4 31.Kg3 Kf6 32.Bd3 Rf2 33.h4 h6 34.Rb1 Rd2–/+ 35.Rf1 Ke6 36.Bb1 Be3 37.Kf3 Bf4 38.Rf2 Rd1–+ 39.Ba2 Rh1 40.c5–/+ Ke7 41.cb6 cb6 42.Rc2–/+ Rh3 43.Ke2 Rh2 44.Kd3 Rc2 45.Kc2 Bg3 46.h5= gh5 47.gh5 f6 48.Kd3 Kd6 49.Kc4 Bf2 50.Bb3 Be3 51.Bd1 ˝–˝. Garcia Garcia,Miguel – Couceiro Gestal,Carlos, Gijon op, 2002.

3.d4 Qf6 4.Nc3 Nc6 5.Nf3 ed4 6.Nd5 Qd8 7.Nd4 Nd4 8.Bd4 Be6 9.e4+= c6 10.Nf4 Qd7 11.Bd3 0–0–0 12.0–0 Kb8 13.c4 d5 14.ed5 cd5 15.Ne6 fe6 16.c5 Nf6 17.Qe2 Be7 18.Rfe1 Rhe8? 19.Bb5 Qc8 20.Be8 Re8 21.Rad1 h6 22.Qe5 Ka8 23.Qe6 Qe6 24.Re6 Ne4 25.Bg7 Nc3 26.Bc3 (26…b6 27.Rd5+–) 1–0. Fritz 8 – NN, 2003.

3.e4 a5 4.b5 (--> 1.b4 a5 2.b5 e5 3.Bb2 d6 4.e4).

3.e4 Na6 4.d4 Nb4 5.de5 Qe7 6.a3 Nc6 7.Nf3 Be6 8.Bb5 Qd7 9.Nd4 a6 10.Ne6 Qe6 11.Bc6 bc6 12.Qd4 Rd8 13.ed6 (13.ed6 Qd6 14.Qe5 Ne7 15.Qh5+=; 13.Nd2 Ne7+=). 1805DYDIDIDY – schachmatt44, mySchach.de, 2005.

3.e4 d5 4.ed5= Qd5 5.c3 e4 6.Qe2 Qe5 7.d4 Qe6 8.g3 Nf6?? 9.Bh3+– Ng4 10.Bg4 Qg4+= 11.Qg4 Bg4=+ 12.Nd2 (12.Nd2 Bf5 13.f3 ef3 14.Ngf3=) 1–0. The Enchanter – Ridgereeno, ChessWorld.net, 2005.

3.e4 Qf6 4.d4 Be7 5.Nf3 Nd7 6.Nbd2 c6 7.Bc4 b5 8.Bb3 Bd8 9.a4+/– Ne7 10.ab5 cb5 11.0–0 0–0 12.Qe2 Ng6 13.Qb5+– Nf4 14.de5 Qg6 15.g3 Nh3 16.Kh1 de5 17.Be5 Ne5 18.Ne5 Qg5? 19.Bf7 Rf7 20.Qd5 Kh8 21.Nf7 (21.Nf7 Kg8 22.Nh6 Kh8 23.Qg8#) 1–0. mtrc – Simplicius, internet, 2002.

3.e4 Bg4 4.Be2 Be2= 5.Ne2 Nc6 6.0–0 Nb4= 7.Ng3 Be7 8.a3 Nc6 9.Nc3 Nf6 10.Nd5 Nd5 11.ed5 Nb8 12.c4 0–0 13.d4 ed4 14.Qd4 f6 15.Nf5 c5? 16.Qg4+– Rf7 17.Nh6 Kf8 18.Nf7 Kf7 19.Qh5 Kg8 20.Rfe1 Nd7 21.Re2 Ne5 22.Rae1 Bf8 23.f4 Nc4+/– 24.Ba1 Na3?? 25.Re3 Nc4 26.Rg3 Qd7=+ 27.Bf6 Qf7 28.Qf7 Kf7–/+ 29.Bc3 b5 30.Rh3 h6 31.f5 b4 32.Ba1 b3?? 33.Bg7?? Bg7–+ 34.Rf3?? a5 35.Ref1 Bf6 36.g4 a4 37.h4 Ne5 38.Rf4 Bh4 39.f6 Bf6 40.Rf6 Kg7 41.Rd6 Ng4 42.Rd7 Kg6 43.Rd6 Kg7 44.Re1?? Rf8 45.Re7 Rf7 46.Re8 b2 47.Rb6 a3 48.Ra8 Ne3 49.d6?? Nc4 50.Rbb8 a2 51.Ra2–/+ b1Q 52.Rb1=+ Nd6 53.Rd1 Ne4 54.Rg2 Kh7 55.Rd8 c4 56.Rc8 c3 57.Re2= Re7 58.Rc3?? Nc3 59.Re7= Kg6 60.Re6 Kg5 61.Rh6 Kh6 ˝–˝. Nautiluschess – Mae, internet, 2001.

3.e4 Qg5 4.d4 ed4 5.Qd4 Nc6 6.Bb5?? Bd7 7.Bc6–/+ Bc6 8.Nf3?? Qg6 9.Nbd2 Be7 10.0–0?? Nh6?? 11.h3?? Bf6–/+ 12.e5 de5 13.Qe3 e4 14.Ne5 Be5–/+ 15.Be5 Nf5 16.Qf4 e3 17.Nf3 ef2 18.Rf2= Ng3?? 19.Nh4+– Qe6 20.Qg3 0–0–0 21.Bc7 Rde8 22.Be5 f6?? 23.Bc3 Bd5 24.Nf5 Rhg8 25.Nd4 Qa6 26.a4 Qc4 27.Rf4 Qc7 28.Qg4 Kb8 29.Bd2 Re4 30.Re4 Be4 31.Qe4 Qd7 32.Qf4 Ka8 33.b5 Rf8 34.Bb4 Rc8 35.c3 Rc4 36.Re1 Rc8 37.Re7 Qd5 38.Qg4 Rg8 39.Rg7 Rg7 40.Qg7 a6 41.b6 Qa2 42.Qf8# 1–0. Roderick64 – larniletter, ChessWorld.net, 2010.

3.f3 Nf6 4.g3 g6 5.e3 Bg7 6.Qe2 0–0 7.Nc3 Be6 8.0–0–0 Nc6 9.d4 Nb4 10.Kb1 Nfd5 11.de5 Nc3 12.Bc3 Na2 13.ed6 Nc3 14.Kc1 Ne2 0–1. guest555 – guest815, ICS blitz, 2000.

3.Nf3 a5 4.b5 (--> 1.b4 a5 2.b5 e5 3.Bb2 d6 4.Nf3).

3.Nf3 Qe7 4.Nc3 c6 5.e4 Nf6 6.a3 h6 7.d4 Nbd7 8.Bd3 Nh7 9.Ne2 f6 10.0–0 Ng5 11.Nh4 Qf7 12.f4 Qh5 13.Nf5 Nh7 14.c4 Nb6 15.fe5 Bf5 16.Rf5 Qg6 17.Nf4 Qf7 18.e6 Qe7 19.Qh5 Kd8 20.Ng6 Qe6 21.Nh8 Nc4 22.Qf7 Qf7 23.Nf7 Ke7 24.Bc4 d5 25.ed5 cd5 26.Rd5 Rd8 27.Re1 (27.Re1 Kf7 28.Rg5 Rd5 29.Bd5) 1–0. miehnekort – hcetos, Yahoo, 2005.

3.Nf3 Qf6 4.e3 Bd7 5.Be2 Be7 6.0–0 Nh6 7.d4 e4 8.Nfd2 d5 9.a3 b5 10.Nc3 a6 11.Nd5 Qd6 12.Ne7 Qe7 13.d5 0–0 14.c4 c6 15.Qc2 Bf5 16.dc6 Nc6 17.f3 ef3 18.Bd3 fg2 19.Rf3 Ng4 20.Bf5 Nh6 21.Bh7 Kh8 22.Be4 Ng4 23.Bc6 Nh2 24.Rh3 Kg8 25.Qh7# 1–0. BorisOwl – Reindear, gamecolony.com, 2000.

3.f4 e4 4.Nc3 Bf5 5.d3 Nf6=+ 6.de4 Ne4 7.Qd5 Nc3 8.Qf5+/– Na4 9.Qe4 Be7 10.Bg7 Rg8? 11.Qh7+– Kd7 12.Nf3 c6 13.Ne5! Kc7 14.Nf7 Qe8 15.Nh6 Rg7 16.Qg7 Nd7 17.Ng4 Rd8 18.a3 Nab6 19.0–0–0 Kb8 20.e3 Na4 21.Bd3 Bf8 22.Qg6 Qe6 23.Qe6 1–0. gtate (1930) – rflorano (1945), net–chess.com, 2006.

3.f4 Nf6 4.fe5 de5 5.Be5 Qe7 6.Bc3 Nd5 7.a3 Nc3 8.Nc3 (worse is 8.dc3 a5 9.Nf3 ab4 10.cb4 Qf6+=) 8...g6 9.Nf3 Bg7 10.e3 Nc6 11.Bb5 Bd7 12.0–0 a6 (12...Bc3!? 13.Bc6 A) worse is 13...Ba1 14.Bb7 (14.Qa1?! 0–0–0 15.Bd7 Qd7=) 14...Rb8 15.Qa1+/–; B) 13...Bc6 14.dc3 Qe3 15.Kh1 0–0=) 13.Bc6+= Bc6 14.Qe2 a5 15.d4 (15.Nd4!?+/–) 15...ab4= 16.ab4 Ra1 17.Ra1 Qb4 18.Ra8 Ke7 19.Rh8 Bh8 20.Qd3 Bb5?? (20...f5!?=) 21.Qd2 (better is 21.Nb5 c6 22.Nc3+–) 21...Qc4 22.h3 (22.Nb5 Qb5 23.e4 c5 24.Qg5 Bf6 25.Qc5 Qc5 26.dc5 Bc3=) 22...Qf1 (22...Bc6 23.e4=) 23.Kh2+= Bf6? (23...Bc6 24.d5 Bd7 25.e4+=) 24.Ne5?? (24.Nd5!? Ke6 25.Nc7 Kd7 26.Nd5+– (worse is 26.Nb5 Qb5 27.e4 Bg7+–)) 24...Bh4 (better is 24...Be5!? 25.de5 Bc6 26.Nd5 Bd5 27.Qd5 Qf5 28.Qc5 Kd7 29.Qd4 Kc8=) 25.Nb5 Qb5 26.c4 Qe8 27.Qb4+– Kd8 28.Qb7 Qe7 29.Qb8 (29.Qa8) 1–0. Fournier,Frederic (1940) – chinpong (1780), Active (1/0), 2004.

3.g3 Na6 4.a3 c6 5.Bg2 f5 6.d3 Nf6 7.Nd2 Be7 8.c4 Nd7 (8...0–0!?=) 9.Ngf3 Bf6 10.Qc2 Nc7 11.0–0 Ne6? (11...0–0 12.Bh3 Be7 13.c5 dc5 14.bc5 Nc5 15.Ne5+/–) 12.Rfc1 (better is 12.Bh3+–) 12...0–0 13.Nf1 g5 Black intends f4 14.Qd2 (better is 14.Ne3!? g4 15.Nd2=) 14...g4–/+ 15.Ne1 Bg5 Black plans f4 16.e3 f4 17.ef4? (better is 17.h4!? Be7 18.ef4 ef4 19.d4+=) 17...ef4–+ 18.Qe2 Ne5! 19.Be4 (19.Be5 de5 Combination) 19...fg3 20.Ng3?? (better is 20.hg3 Bc1 21.Rc1–+) 20...Nf4 21.Bh7 Kh7 22.Qe4 Neg6 23.Rc2 d5 24.cd5 cd5 25.Qd4 Bf6 26.Qc5 (26.Qe3 d4 27.Qe4 Re8–+) 26...Bb2 27.Rb2 Qf6 28.Raa2 Bd7 29.Qe3 (29.Kh1–+) 29...Rae8 30.Qd2 (30.Qc1 Nh4 31.Kf1 Re1 32.Qe1 Nf3–+) 30...Nh4 31.Rc2 Re1! 0–1. Macedo,A Soares De (1845) – Macedo,M Valerio (2050), Championship Potiguar Absoluto, 2013.

3.g3 b5 4.Bg2 c6 5.e3 Na6? (5...a5 6.ba5) 6.Bc6 Bd7 7.Ba8 Qa8 8.f3 Nb4 9.a3 Nc6 10.Nc3 Nf6 11.e4 b4 12.ab4 Nb4 13.Ba3 Qb8 14.Bb4 Qb4 15.Ra7 Be7 16.Qb1 Qd4 17.Rc7 0–0 18.Nge2 1–0. Wall,Bill – DiEd, playchess.com, 2012.

3.g3 b6 4.Bg2= c6 5.b5 a5 6.bc6 Ra7 7.Nc3 f5 8.Nb5+/– Ra6?? 9.d4 ed4 10.Qd4 a4?? 11.c7+– Qf6 1–0. 1301 – dimebag7, Caissa.com, 2004.

3.g3 d5 4.Be5 Nc6 5.Bb2 Nf6 6.b5 Nb8 7.Bg2 Bd7 8.a4 Be7 9.c4 dc4?? 10.Bb7+– 1–0. coloplayah (2155) – yetzaline (2060), net–chess.com, 2006.

3.g3 Be7 4.Bg2 Nf6 (--> 3.g3 Nf6 4.Bg2 Be7).

3.g3 Bg4 4.Bg2 c6 5.c4 Nd7 6.Qb3 Ngf6 7.d3 (7.d4 e4+=) 7...Be7–/+ 8.Nd2 Qc7 (8...0–0 9.d4–/+) 9.Ngf3 a6 (9...0–0 10.0–0+=) 10.a4 (10.0–0 d5=) 10...h6 (10...0–0 11.0–0+=) 11.0–0= 0–0 12.Rfc1 (12.h3 Bf5=) 12...Nh7 (12...a5 13.d4=) 13.e3 (13.d4 Nhf6+=) 13...f5 (13...Ng5 14.Ng5 Bg5 15.a5=) 14.c5 d5 15.e4 (15.h3!? Bh5 16.Qc3=) 15...fe4+= 16.de4 Be6 17.Re1 (17.ed5 cd5 18.Qe3 Bg5=) 17...Bf6 18.ed5 Bd5 19.Qc2 Increasing the pressure on the isolated pawn on e5 19...Rae8 (19...a5 20.b5=) 20.Ne4+= Be4 21.Qe4 The pressure on the isolated pawn grows 21...Re7 (21...a5 22.Qc4 Rf7 23.Re4+=) 22.h4 (22.Rad1 Ng5 23.Ng5 Bg5+/–) 22...a5+= 23.Bh3 (23.Rad1 ab4 24.Qc4 Ref7+=) 23...ab4 24.Bf5 g5 25.h5 (25.Bh7 Rh7 26.Qb4 gh4 27.Nh4 Be7 28.Qc4 Rhf7+=) 25...Bh8 26.Qc4 Kg7 27.Bd7 Rf3 28.Qe4 Qd7? 29.Qf3+/– Nf6 30.Rad1 Qe8 31.g4 Kg8 32.Rd6 Kf7 33.Qf5 Bg7? 34.Red1 Qh8 35.Rf6! Bf6 36.Qg6 Kf8 37.Rd8 (37.Rd8 Re8 38.Re8#) 1–0. Jeschke,Holger – Bahr,Torsten, Schleswig Holstein–ch cand–B, 1995.

3.h3 b5 4.a4+/– c6 5.ab5 cb5 6.e3 a6 7.Qf3 Ra7 8.Bb5! Bd7 9.Nc3 Bb5 10.Nb5 Qb6?? 11.Na7 Qa7 12.Ne2 Qb6 13.d4 Qb4 14.Bc3 Qc4 15.Qa8 Qc8 16.Rb1 Ne7 17.Rb8 (17…f6 18.Rc8 Nc8 19.Qc8 Kf7 20.de5 de5 21.f4+–) 1–0. pierre – propan, internet, 2009.

3.h3 f6 4.e3 c5 5.a3 a5 6.c3 b6 7.Qh5 Kd7?? 8.Bb5 Kc7+/– 9.Qf7 Nd7 10.Qd5 Bb7= 11.Qe6 Bc6 12.Bc6+/– Kc6 13.Nf3 cb4? 14.cb4 b5 15.Nc3 ab4 16.Qc4?? bc4–+ (17.ab4 Ra1 18.Ba1 d5–+) 0–1. Hardin – ssteelers, Live Game Caissa's Web, 2004.

3.h4 Nf6 4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.h4).

3.a3 c5

4.bc5 dc5 5.e3 Bd6 6.Nf3 b5?? (better is 6...Nc6=) 7.Bb5 (better is 7.Ne5 a6 8.Nf7 Kf7 9.Qf3 Nf6 10.Qa8=) 7...Bd7+/– 8.Bd7 Nd7 9.0–0 Ngf6 10.c4 (10.Nc3 e4 11.Ng5 Qb8 12.Nge4 Bh2 13.Kh1 Ne4 14.Ne4 Qb2 15.Kh2 Qe5 16.Ng3 Rb8+/–) 10...0–0 (10...e4!? 11.Ng5 h6+=) 11.Nc3 h6 (11...e4 12.Ng5 Qb8+/–) 12.Nd5 (better is 12.d3+/–) 12...Nd5= 13.cd5 Rb8 14.Rb1 Qf6 15.d3 Nb6 16.e4 Nd7 17.Qc2 a6 18.Bc3 Rbc8 19.Rfc1 Rb8 20.Rb8 Bb8 21.Qa4 Rd8?! 22.h3 Bc7 23.Ba5 Ba5 24.Qa5 Re8 25.Rb1 Kh7 26.Rb7 Rd8 27.Qc7 Qe7? 28.Ne5! Qg5 29.Nd7 Qc1?? 30.Kh2+– Qf4?? 31.Qf4 (31.Qf4 Kg8 32.Qc7 Kh7 33.Nf6 Kg6 34.Qg3 Kf6 35.e5 Kf5 36.Rf7) 1–0. Fournier,Frederic (1645) – ELPAYAS0, Active (5/0) Buho21.com, 2006.

4.bc5 Nd7 5.d4 dc5 6.de5 Qa5 7.Bc3 Qc3?? 8.Nc3+– Ne5 9.Nb5 Bd7 10.Nc7 Kd8 11.Na8 Nf6 12.Qd2 Kc8 13.Qa5 b6 14.Qa7 (14.Qa7 Bd6 15.Rd1+–) 1–0. Bambinik – Uamusme, itsyourturn.com, 2001.

3.a3 c6

4.c4 Nd7 5.d3 Ngf6 6.e3 Be7 7.Nf3 0–0 8.Be2 e4 9.de4 Ne4 10.Nbd2 Nd2 11.Qd2+= Nb6 12.0–0 Bf6 13.Rad1 Bb2 14.Qb2 Qe7 15.h3 Be6 16.Qc2 Rad8 17.Bd3+= h6 18.Nd4 Bd7 19.e4 Qg5 20.f4 Qe7 21.f5 f6 22.c5+/– Nc8 23.cd6 Nd6+/– 24.Qb3 Kh8+= 25.Rfe1 Rc8 26.Nf3+/– Be8 27.e5 fe5 28.Ne5 Qf6 29.Qe6 Rd8 30.Ng6 Bg6+= 31.fg6 Qg5 32.Re5 Rf6?? 33.Qe7+– Rf5 34.Bf5 Qf6 35.Bd7 Rf8 36.Qd6 Qf2 37.Kh1 (37.Kh1 a6 38.Rf5 Re8 39.Rf2 Rg8 40.Rf8 h5 41.Rg8 Kg8 42.Qb8#) 1–0. kostovist – sergeiv, internet, 2006.

4.c4 Qf6 5.e3 Be7 6.Nf3 h6 7.Be2 Qg6 8.0–0 Bh3 9.g3 (better is 9.Ne1 Nf6 10.d4=) 9...Bf1–+ 10.Qf1 h5 11.Nc3 h4 12.Qg2 hg3 13.fg3 f5 14.d3 Qf7 15.Rf1 g5 16.Nd1 Qg6 17.Nf2 g4 18.Nd2 Nd7 19.d4 e4 20.d5 c5?? (better is 20...Bf6 21.dc6 bc6–+) 21.Bh8+– Bf6 (21...Qh6 22.Nd1 Qh8 23.Rf5+–) 22.Bf6 Qf6 (22...Ngf6 23.bc5 dc5 24.Nd1+–) 23.bc5 Nc5 24.Nd1 0–0–0 25.Nc3 a6?? 26.Rb1 Rd7?? 27.Qf2 Nh6?? 28.Bf1 Nf7?? 29.Bg2 Ng5 (29...Ng5 30.Nce4! Qg6 31.Nc5 dc5+–). Fournier,Frederic (1895) – 3aHacPycckux (1815), Active (1/0), 2005.

4.d4 e4+= 5.d5 Nf6 6.c4 (6.Nc3 e3 7.fe3 Qe7 8.Qd3 cd5 9.Nd5 Nd5 10.Qd5 Be6 11.Qb5=) 6...a5 (6...Be7 7.e3 0–0 8.Nc3 a5 9.b5 cb5 10.cb5 Nbd7 11.Nge2=) 7.b5 cb5 (7...Be7 8.Nc3 cb5 9.cb5 Nbd7 10.f3 Nc5 11.fe4=) 8.cb5 Nbd7 (8...Be7 9.Bd4 Bf5 10.Nc3 0–0 11.e3=) 9.a4 (9.Nc3 Nc5= 10.Rc1 Be7 11.Qc2=; 9.e3 Be7 10.Nc3 0–0 11.Nge2=) 9...Nc5 (9...Nb6 10.Nc3 Nc4 11.Bc1+=) 10.Nc3 g6 (10...Be7 11.Rc1=) 11.e3 Bg7 12.Qc2 0–0 13.Bc4 (13.Be2 Bf5+=) 13...Bf5–/+ 14.0–0–0 (14.Rc1!?–/+) 14...Rc8 15.Nge2 Nd3 16.Rd3 ed3 (16...Rc4?! 17.Rd4 Rc5 18.h3–/+) 17.Bd3 Bd3 18.Qd3 Ng4 19.Rf1 Nh2 20.Rg1 (20.Re1 Ng4 21.Rf1 Qh4–+) 20...Ng4 21.f3 (21.Rf1 Qh4 22.f3 Ne5–+) 21...Ne5 22.Qd1 Qb6 23.e4 Qe3 24.Kb1 Nd3 25.Bc1 Nc1 26.Qc1 Qd3 (26...Qf2!? 27.Rf1 Qg2 28.Rg1 Qf3 29.Rg3–+) 27.Kb2 Qe2 (27...Qe2 28.Qc2 Bc3 29.Kb1 Qc2 30.Kc2 Bd4 31.Kd3 Bg1–+) 0–1. Baumann,Benjamin – Garrel,A (2160), 2nd Open, Condom FRA, 2003. (=1.a3 d6 2.b4 e5 3.Bb2)

3.a3 Nd7

4.d3 b6 5.e4= Bb7 6.Nf3 Be7 =. Eigenmann,Peter – Lenhart,Erich (1755), Schleswig Holstein–ch Seniors op, 2007.

4.d3 Ngf6 5.Nf3 =+.

4.e3 d5 5.Nf3 g6 (better is 5...e4!? 6.Nd4 a5=) 6.Ne5+/– Ne5 7.Be5 f6 8.Bb2 Bg7 9.c4 dc4 (9...Ne7 10.cd5 Nd5 11.d4+/–) 10.Bc4+– c6 11.d4 Ne7 12.Nc3 b5 13.Be2 0–0 14.0–0 a5 15.Bf3 (15.Qb3 Kh8+–) 15...ab4 (15...Be6 16.Qc2+/–) 16.ab4 Ra1 17.Qa1 Bb7 (17...Be6 18.Qa5+–) 18.Ne4 (18.Nb5 Nd5 19.Nc3 Qe7+–) 18...Nd5 19.Nc5 Qc7 (better is 19...Bc8+–) 20.Ne6 (20.Nb7?! Qb7 21.Qa3 Ra8+–) 20...Qd6 21.Nf8 Bf8 22.Bd5 Qd5 23.f3 (23.Qa7!? c5 24.f3 c4+–) 23…Bc5 1–0. Fournier,Frederic (1800) – huguajiro (1605), Active, 2011.

3.a3 Bf5

4.c4 Be7 5.Nc3 Nf6 6.g3 0–0 7.Bg2 Nc6 8.e3 Bd3 9.Qb3 e4 10.Nge2 Ne5 11.c5 Nf3 12.Bf3 ef3 13.Nf4 dc5 14.bc5 Rb8 15.Ncd5 Nd5 16.Nd5 Be2 17.Qc3 f6 18.Nf4 Qd7 19.Ne2 fe2 20.Qc4 Kh8 21.Ke2 Rbd8 22.d4 Qc6 23.Rhd1 b6 24.d5 Qc5 25.Qc5 Bc5 26.a4 Rfe8 27.a5 b5 28.a6 b4 29.Rac1 Bb6 30.Rc6 Kg8 31.Rd3 Kf7 32.f3 Ke7 33.e4 Kd7 34.Bd4 Bd4 35.Rd4 Rb8 36.Rdc4 Rec8 37.Kd2 h6 38.Kc2 h5 39.Kb3 f5 40.e5 g5 41.Rb4 Re8 42.e6 Kc8 43.d6 Rb4 44.Kb4 Re6 45.Rc7 Kd8 46.Ra7 Rd6 47.Ra8 Kc7 48.a7 Rd4 49.Kc5 Ra4 50.Rf8 Ra5 51.Kc4 Ra4 52.Kc5 ˝–˝. Wall,Bill – COMP, Mt View, CA, 1987.

4.c4 Be7 5.e3 Nf6 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4 Bf5).

4.d3 Nf6 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.d3 Bf5).

4.e3 Nf6 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Bf5).

4.Nf3 Nf6 5.e3 e4 6.Nd4 Qd7 7.Nf5 Qf5 8.Be2 h5 9.0–0 g5? 10.d4 ed3?? 11.Bd3+– Qg4 12.Be2 Qe6+/– 13.c4 Bg7 14.Nd2 g4 15.Nb3 h4 16.Nd4 Qe4 17.Bd3 Qe7 18.Nf5 Qf8 19.Bf6 Bf6 20.Rb1 g3 21.h3 gf2+/– 22.Rf2 Be5 23.Qa4 Nd7+= 24.c5 d5? 25.c6+– bc6 26.Qc6 Rd8 27.Nd4 Bd4 28.ed4+– Qd6 29.Re1 Kf8 30.Qc5?? Qc5 31.dc5 Rg8 32.Rf4 Rg3 33.Rh4 Rd3?? 34.Rh8+– Kg7 35.Rh4 Rg3 36.Rd1 Rg8 37.Rd5 Kf8?? 38.Re4?? Rg2–+ 39.Kf1 Rg1 40.Kf2? R8g2 41.Kf3 Rg3 42.Kf2 R3g2?? 43.Kf3 Rg3?? 44.Kf4?? Rg6 45.Rd7= Rf1 46.Ke5?? Re6–+ 47.Kd4 (47…Rd1 48.Ke3 Rd7 49.Kf4–+). OPA – Falcon8, Live Game Caissa's Web, 2004.

3.a3 Nf6

(--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6).

4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.a3).

4.c4 Nbd7 5.e3 Be7 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4 Nbd7).

4.c4 Be7 5.Nc3 0–0 6.e3 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4 0–0 6.Nc3).

4.c4 Be7 5.e3 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4).

4.e3 Be6 5.c4 Be7 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4 Be6).

4.e3 Be6 5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.Nf3 Nf6 5.a3).

4.e3 Be7 5.Nf3 0–0 6.c4 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4 0–0 6.Nf3).

3.a3 h6

4.c4 Nf6 5.e3 g6 6.d4 e4 7.f3 Bg7 8.fe4 Ne4 9.Nf3 0–0 10.Bd3 Bf5?? (10...Re8 11.Nbd2 Bf5 12.Ne4 Be4 13.Be4 Re4 14.Qd3=) 11.Nc3?? (11.g4 Bg4 12.Be4 c6+–) 11...c6?? (better is 11...Nc3 12.Bc3 Qe7=) 12.Ne4 Be4 13.Be4 d5 14.cd5 Re8 15.Bc2 Re3 16.Kf2 Re8 17.dc6 Nc6 18.Re1 Ne7 19.Rb1 Rc8 20.Bb3 Qc7 21.Ne5 Be5 22.de5 Qb6 23.Qd4 Qc7 24.e6 f5 25.Qg7 1–0. Fournier,Frederic (1690) – awcc143@chesscube.com, Active, 2011.

4.Nf3 f5 5.c4 g5 6.e3 Bg7 7.Be2 Be6 8.h3 Nd7 9.d3 g4 10.hg4 fg4 11.Nfd2 h5 12.Nc3 Nh6 (12...Ngf6 13.d4=) 13.g3 (better is 13.Rh5!? Nf6 14.Rh1+/–) 13...Nf5= 14.Qc2 h4 15.gh4 Rh4 16.0–0–0 Qe7 17.Nde4 Rh1 18.Rh1 Nh4? (18...Nh6 19.Kd1=) 19.Ng3 (better is 19.Bg4!? Bg4 20.Nd5+/–) 19...0–0–0 20.Qd1 Nf6?? (better is 20...Nf3 21.Bf3 gf3 22.Qf3 Rf8+=) 21.Rh4+– Ne4 22.Rh2 Ng3 23.fg3 Qd7 24.Ne4 Rg8 25.Ng5 Bf6 26.Ne6 Qe6 27.Rh6 Qf5 28.Qf1 Qf1 29.Bf1 Bg5 30.Rh4 Be3?? 31.Kc2 Bf2 32.Be2 Bg3 33.Rg4 Rg4 34.Bg4 Kd8 35.Bc1 c5 36.b5 Be1 37.Bg5 Kc7 38.a4 Bf2 39.Bd2 Bd4 40.a5 Bf2 41.Be6 Bd4 42.Bd5 Bf2 43.Bc3 Bg1 44.Kb3 Be3 45.Ka4 Bg1 46.Be1 Be3 47.Bh4 Bd4 48.Be7 Bc3 49.b6! Kb8 50.Bd6 Ka8 51.Bc5 a6 52.Kb3 Be1 53.Bb4 Bg3 54.c5 Kb8 55.c6 bc6 56.Bc6 Bh4 57.Bd6 Kc8 58.Bb7! Kd8 (58...Kb7 59.Be5 Combination) 1–0. Fournier,Frederic (1980) – badeluis (1945), Active (5/0), 2004.

3.a4 f5

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.a4).

3.b5 Bg4

4.a4 Nf6 5.Nf3 g6 6.h3 Bf3 7.ef3 Bg7 8.Bc4 0–0 9.0–0 Nbd7 10.d4 ed4 11.Bd4 Qc8 12.Nd2 c6 13.Bb3 cb5 14.ab5+= Nb6 15.Ne4 Ne4 16.Bg7 Kg7 17.fe4 Re8 18.Qd6 Re4+= 19.Rfe1 Rh4? 20.Qe5 Kh6 21.Qe3 Kg7 22.Qe5?? Kh6 23.Bf7 Qc2?? 24.Re2 Qc4?? 25.Rae1 Rh5?? 26.Qe3+– Rg5 27.Bc4 Nc4 28.Qd3 (28.Qd3 Na5 29.Re4+–; 28.Qf4!? Nd6 29.h4 Nf7+–) 1–0. HeresJhonny – oscardog, Caissa.com, 2004.

4.Nf3 Nd7 5.h3 Bh5 6.g4 Bg6 7.e3 Ngf6 8.Be2 Nc5 9.Nh4 Qd7 10.Ng6= hg6 11.c4 Be7 12.Nc3 Nfe4 13.a4 Nc3 14.Bc3= Ne4 15.Bb4 Bh4–/+ 16.0–0 Be7 17.Kg2=+ Ng5 18.d4 Rh3 19.de5 0–0–0 20.ed6 Bd6 21.Bd6+= cd6 22.Qd6?? Qd6–+ 23.Rad1 Qh2# 0–1. metal – IceKitten, caissa.com, 2007.

4.h3 Bf5 5.d4 =+.

4.h3 Bh5 5.Nf3 Nf6 6.d3 h6 7.Nbd2 Be7 8.Nh4 0–0 9.Nf5 Bg6 10.Ne7 Qe7 11.e3 Nbd7 12.Be2 a6 13.a4 ab5 14.ab5 Ra1 15.Ba1 Nb6 16.0–0 c6 17.e4 cb5 18.c4? bc4–+ 19.dc4 Ne4 20.Ne4 Be4 21.Bf3? Bf3 22.Qf3 Nc4 23.Qb7 Qb7 24.f4 e4 25.f5 f6 26.Rf4 Rd8 27.Rg4 Kf7 28.h4 d5 29.Bd4 Qb1 30.Kh2 Qd3 31.Bf2 e3 32.Be1 Qf5 33.Rg3 d4 34.Rf3 Qb1 35.Bg3 d3 36.Bc7 Rd7 37.Be5 d2 38.Bf4 d1Q 39.Rg3 Qh1# 0–1. TIROLOCO – port, Live Game Caissa's Web, 2004.

3.Nc3 d5

4.a3 d4 5.Ne4 Nf6 6.Nf6 Qf6 =.

4.a3 Nf6 5.Nf3 d4 6.Na4 b5 7.Nc5 Bc5 8.bc5 Nc6 9.e3 Rb8 10.ed4 ed4 11.Qe2 Be6 12.Ne5 Ne5 13.Qe5 0–0 14.Qd4 Bd5 15.f3 Re8 16.Kf2 Re6 17.Bd3 Qe8 18.Rhe1 Qc6 19.Kg1 h6 20.Bf5 Re1 21.Re1 a6 22.Qf2 Rd8 23.d3 h5 24.Be5 g6 25.Bh3 Re8 26.Bd4 Nh7 27.Re8 Qe8 28.Bc3 c6 29.f4 f6 30.Kh1 Kg7 31.Bd4 Qe7 32.Qd2 Qd8 33.Qe3 a5 34.Kg1 Kf8 35.Bc3 Kg7 36.Qe2 Qc7 37.Bd2 Qa7 38.d4 Bf7 39.f5 g5 40.g3 Qd7 41.Qf2 a4 42.Bf1 Nf8 43.Be2 g4 44.Bd3 Bd5 45.Qe3 Kg8 46.Qf4 Qe8 47.c3 Qe7 48.Qd6 Kf7 49.Kf1 Nd7 50.Bf4 Ke8 51.Bh6 Qh7 52.Qf4 Kd8 53.Kf2 Qf7 54.Qd6 Ke8 55.Kg1 Qe7 56.Qe7 Ke7 57.Bf4 Bf3 58.c4 bc4 59.Bc4 Be4 60.Bd6 Ke8 61.Bf1 Kf7 62.Bg2 Bg2 63.Kg2 Kg7 64.Kf2 Kf7 65.Ke3 Ke8 66.Ke4 Kd8 67.d5 cd5 68.Kd5 Kc8 69.Kc6 (69…Kd8 70.Kb7 Nc5 71.Bc5+–) 1–0. GLChess210 – LGGold20, computer chess game, 2000.

4.a3 Nf6 5.Nf3 d4 6.Na4 b5 7.Nc5 Bc5 8.bc5 Nc6 9.e3 Rb8 10.ed4 ed4 11.Qe2 Be6 12.Ne5 Ne7 13.Qd3 Bf5 14.Qd4 Qd4 15.Bd4 Bc2 16.Rc1 Bf5 17.Nf3 a6 18.Bf6 gf6 19.Be2 Rg8 20.0–0 Be4 21.d3 Bd5 22.d4 Kd7 23.Nh4 Nf5 24.Bf3 Nh4 25.Bd5 c6 26.Bf7 Rg2 27.Kh1 Rd8 28.Rcd1 a5 29.d5 Kc7 30.d6 Kb7 31.Rd3 Rg4 32.Re3 Ng6 33.Re7 Kb8 34.Rc7 Ne5 35.f4 Nf7 36.Rf7 Rh4 37.Rf6 Rh3 38.Ra1 Rc3 39.Rf5 h6 40.Re5 b4 41.ab4 ab4 42.Ra6 Rc1 43.Kg2 Rc2 44.Kf3 Rc3 45.Ke4 Rc4 46.Ke3 Rc3 47.Kd4 Rc2 48.Rc6 Rd2 49.Kc4 Rc2 50.Kb4 Rb2 51.Kc3 Rh2 52.Rb6 (52…Ka8 53.c6+–) 1–0. GLChess210 – LGoliath141a, computer chess game, 2000.

4.Nb5 c6 5.Nc3 –/+.

4.Nb5 e4 5.Nc3 Nf6=+ 6.Nb5 Bd7 7.Nc3? Bb4–+ 8.Nd5? Nd5 9.Bg7 Rg8 10.Bh6 Bc5 11.Be3 Be3 12.fe3 Qh4 13.g3 Qg4 14.Nh3 Qh5 15.Nf2 Nc6 16.h3? Rg3 17.Ne4 Rg7 18.c4 Ndb4 19.Rb1 Bf5 20.Nc5 Bb1 21.Qb1–+ Qc5 22.Qe4 Qe5 23.Qg2 Rg2 24.Bg2 Qa1 25.Kf2 Qf6 26.Kg1 0–0–0 27.a3 Nc2 28.h4 Rd2 29.Be4 Rd1 30.Kh2 Rh1 31.Kh1 Ne3 32.Bh7 Qh4 33.Kg1 Qh7 0–1. johnbob – DANH, Live Game Caissa's Web, 2004.

4.Nb5 e4 5.Be5!? Na6 6.c3 =.

3.Nc3 Be6

4.d4. Brylski,Nils – MT, remoteschach.de, 2006.

4.e4 Nf6 (--> 3.e4 Nf6 4.Nc3 Be6).

3.d3 Nc6

4.a3 Nf6 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.d3 Nc6).

4.b5 Nce7 5.e4 Bd7 6.c4 Nf6 7.Be2 Ng6 8.Nf3 Be7 9.Nc3 c6 10.a4 a6 11.Qd2 ab5 12.cb5 cb5 13.Nb5 Bb5 14.ab5 Ra1 15.Ba1 0–0 16.0–0 Qb6 17.Rb1 Nf4 18.Bf1 Ng4 19.g3 Ne6+= 20.Bh3 Bg5?? 21.Qe2?? Nf6?? 22.Be6+– fe6 23.Ng5 d5 24.ed5 ed5 25.Qe5 h6 26.Bd4 Qa5 27.Qe6 Kh8 28.Nf7 Kh7 29.Bf6 gf6 30.Qf6 Qa2 31.Qh6 (31.Qh6 Kg8 32.Qg6#) 1–0. lyud – HokeMoseley20, caissa.com, 2007.

4.Nf3 Nb4!? 5.c3 Nc6 –/+.

4.Nf3 d5 5.a3 (5.b5 Nd4 6.Nd4 ed4 7.Bd4 a6+=) 5...Nf6 (5...Qf6 6.c4 dc4 7.b5=) 6.Ne5 Ne5 7.Be5 Bf5 (7...Bd6 8.Bd6 Qd6 9.d4+=) 8.e3 Nd7 (8...Bd6 9.Bd4+=) 9.Bb2 Bd6 (9...Qg5 10.Nd2+/–) 10.Be2 (better is 10.Qf3!? Be6 11.c4+/–) 10...0–0+= 11.Nd2 Qe8 (11...a5 12.b5+=) 12.Nf3 Nb6 13.Nd4 Bd7 14.0–0 Be5 (14...Qe5 15.g3+=) 15.Rc1 Na4 16.Ba1 Qe7 17.c4 dc4 18.dc4 Bd4? (better is 18...c5 19.Nf5 Bf5 20.Be5 Qe5 21.Qa4 Be4+/–) 19.Qd4+– (worse is 19.ed4 a5+–; 19.Bd4?! c5 20.bc5 Bc6+/–) 19...c5?? (19...f6 20.Qd5 Be6 21.Qb7 a5+–) 20.Qg7 1–0. Wich,Manuela – Gerasimov,Sewa, Karl Mala mem op, 2006.

3.d3 Bf5

4.Nd2 a6 5.Ngf3 h6 (5...Nc6 6.e4 Bd7 7.d4=) 6.g3 (6.e4!? Bh7 7.d4+=) 6...Nf6 7.Bg2 c6 (7...Nc6 8.0–0=) 8.a4 (8.0–0 Nbd7+=) 8...Qc7 9.c4 (9.0–0 Nbd7+=) 9...Nbd7 10.0–0 Be7 11.Re1 (11.e4 Bg4+=) 11...0–0 12.e4 Bg4 13.Qb3 (13.a5 c5 14.bc5 Nc5+=) 13...Bf3 (13...a5!?=) 14.Nf3+= Nh7 15.d4 (15.a5 Ng5+/–) 15...Kh8 (15...Ng5 16.Ng5 hg5 17.d5+=) 16.b5 (16.Rad1 Ng5+/–) 16...c5 (16...Ng5!?+=) 17.d5 a5 18.Nd2 b6 (18...Bg5 19.Red1+/–) 19.Bc1 (19.Nf1 h5+/–) 19...Bg5 20.Nf3 (20.Re2 Nhf6+/–) 20...Bc1+= 21.Rac1 Qd8 22.Nh4 g6 23.Qe3 (23.Qc3 Kg8+=) 23...Qg5 (23...Ng5 24.Rc2+=) 24.Qe2 h5 (24...Kg7 25.Qb2+=) 25.Nf3 Qf6 26.Bh3 Qe7 27.Bd7 (27.Qd2 Kg7+/–) 27...Qd7+= 28.Kg2 f6 29.Nh4 (29.Qd2 Kg7+=) 29...Rg8= 30.h3 Qf7 (30...Ng5 31.Rh1=) 31.Qf3 (31.Kh2 Rge8+=) 31...Raf8 32.Qe3 Qd7 33.Qh6 Qg7 34.Qg7 Rg7 35.Rh1 (35.f4 Re8+=) 35...Ng5= 36.f3 Nf7 (36...Kh7 37.Rce1=) 37.Kf2 Nh6 38.Rcg1 (38.g4 g5 39.Ng2 h4=) 38...g5 39.Ng2 (39.Nf5 Nf5 40.ef5 Rh7=) 39...f5 40.Ke2 fe4 (40...Rgf7 41.Ne3=) 41.fe4 Rgf7 42.Rf1 ˝–˝. Martinez Pastor,Francisco – Greppi Gonzalez,JL, Madrid Spain, Veterans Championship, 2010.

4.e4 Be6 5.d4 c6 (5...d5 6.ed5 Bd5 7.a3 ed4 8.Qd4 Qe7 9.Qe5=) 6.d5 (6.de5 Qh4 7.Nd2 de5 8.Be5 Bb4 9.Bg7 Bg4+–) 6...Bd7= 7.dc6 Nc6 (7...Bc6 8.Nd2=) 8.a3 (8.b5 Qa5 9.Bc3 Nb4+=) 8...Be7 9.Nf3 f6 (9...Nf6 10.b5 Na5 11.Bd3=) 10.Nc3 Nd4? (better is 10...f5!?+=) 11.Nd4+– ed4 12.Nd5 g6 (12...f5+–) 13.Bd4 f5?? (13...Bc6+–) 14.Bh8 fe4 (14...Nf6 15.ef5 Bf5 16.Bc4+–) 15.Qe2 (15.Qd4 Bf5+–) 15...h5 (15...Nf6 16.Bf6 Bf6 17.Qe4 Kf8 18.Qf3+–) 16.Qe4 Rc8 (16...Bf5 17.Qd4 Qc8+–) 17.Qg6 Kf8 18.Bg7 1–0. Austin,J – Harris,David (2240), Detroit ch–MI, 1991.

3.d4 Qe7

4.d5 Nf6 5.c4 g6 6.Nf3 Bh6 7.e3 0–0 8.Be2 Na6 9.a3 c6 10.Nc3 e4 11.Nd2 Bf5 12.dc6+– bc6 13.Qa4 Qb7 14.c5?? Nb8?? 15.cd6+– Qd7 16.Nc4 Rd8 17.Qb3 Be6 18.Rd1 Bf8 19.Qc2 Bf5? 20.Na4+– Nd5 21.Nc5 Qe8?! 22.g4 Bd7 23.Ne4 Bh6 (23...Bh6 24.Rd5! Bg7 25.Bg7 cd5 26.Nf6 Kg7 27.Ne8 Be8+–; 23...f5 24.Nc5 Bh6 25.gf5 Bg7 26.Bg7 Kg7+–). golly1 – Nexxus6, ChessWorld.net, 2007.

4.de5 de5 5.Ba3 Qf6 6.Nc3 Ne7 7.Ne4 Qb6 8.Qd3 Bf5 9.Rd1 Nd7 10.c4 0–0–0 11.c5 Qg6 12.c6 Nc6 13.f3 Nb4 14.Qb3 Nc2 15.Qc2 Ba3 16.Qa4 Qa6 17.Qc2 Bb4 18.Kf2 Nf6 19.Rc1 Qb6 20.e3 Rd2! 21.Qd2 Bd2 (22.Nd2 Qb2–+; better is 21...Ne4 22.fe4 Bd2 23.Rc3 Bc3 24.ef5–+) 0–1. Schmaeke – Knetsch, 5. Rd., 1999.

4.de5 de5=+ 5.e4? Nf6 6.a3=+ Nc6 7.c4 Ne4–/+ 8.b5 Nb8 9.Nf3 f6 10.Bd3 Nc5 11.0–0? Qf7?? 12.Nc3 c6 13.Ne4 Be7 14.Nc5=+ Bc5 15.Be4 0–0 16.Qc2=+ g6 17.Nh4 f5–/+ 18.Bf3 e4?? 19.Be2?? Be7 20.Ng6? hg6 21.Rad1 Bf6 22.c5 Qg7 23.Bf6 Qf6 24.Bc4 Kh7 25.bc6 Nc6 26.Rd6 Qe5 27.Qd2? Re8 28.Rd5 Qf6 29.Rd6 Qe5?? 30.Rc1?? Be6 31.Be6 Re6 32.Rd7 Re7 33.Re7 Qe7 34.Rd1 Rd8 35.Qc2 Rd1 36.Qd1 (36.Qd1 Qc5 37.Qd7 Kh6 38.h4 Qa3 39.Qb7–+). badboy1221 – Max5, Live Game Caissa's Web, 2005.

3.d4 Be7

4.Nc3 Nf6 5.de5= de5 6.Qd8 Bd8 (6...Bd8 7.e4 Nc6=). Mate Lilla,B – Biro,Nora, RL–2007–0–00088, 2007.

4.de5 de5 5.Qd8 Bd8 6.Be5 Nc6 7.Bg7+– Nb4 8.Na3 Bf6+/– 9.Bh8 Ba1?? 10.Ba1+– Bf5 11.c4 0–0–0 12.Nf3 Nc2 13.Nc2 Bc2 14.Nd2 Nf6 15.f3 Re8 16.Bf6 Re3 17.Bg5 Ra3 18.g3 Kb8 19.Bh3 Ra2 20.0–0 Ba4 21.Bf5 f6 22.Bf4 Bc2 23.Bc2 Rc2 24.Rd1 a5 25.Nb3 Re2 26.Na5 b6 27.Nc6 Kb7 28.Nd8 Kc8 29.Nc6 Rc2?? 30.Ne7 Kb7 31.Rd4 Re2 32.Rd7 Rc2 33.Rc7 Ka6 34.Nd5 Rc1 35.Bc1 (35.Bc1 b5 36.Be3 bc4 37.Nc3 Ka5 38.Bc5 h6 39.Ra7#) 1–0. Polymeron – Count Demonett, internet, 2007.

3.d4 f6

4.d5 Bf5 5.Nd2 c6 6.e4+= Bg6 7.c4 Na6 8.a3 cd5 9.ed5 b6?? 10.Qa4+– Qd7 11.Qa6 Ne7 12.b5 Rc8 13.Ne2 Nf5 14.Nc3 Nd4 15.Nde4?? Nc2+/– 16.Kd2 Na1 17.Ba1 Be7 18.Qa4 0–0 19.Bd3 f5 20.Ng3 Bg5 21.Ke2 Qf7 22.f3 Rfe8 23.Qa7?? Qa7–+ 24.Bb2 Qf7 25.h4 Bf4 26.Kf2 Bg3 27.Kg3 f4 (27...f4 28.Kh2 Bd3–+) 0–1. nay (2190) – rodnel, net–chess.com, 2006.

4.de5 fe5 5.e3 b6 6.Nd2 Nf6 7.c4 Bb7 8.Ngf3 h6 9.Qc2 Na6 10.b5 Nc5 11.Qg6 Ke7 12.g3 Bf3 13.Nf3+/– a6 14.Rd1 Ncd7? 15.ba6 Ra6 16.c5 Ra2? 17.cd6 cd6+/– 18.Bc4 Qe8?? 19.Qe8+– Ke8 20.Ba2 Be7 +–. malaysianisme – beammeupscotty (2115), net–chess.com, 2004.

4.de5 fe5 5.e3 Nf6 6.c4 b6 7.Nd2 Nc6 8.b5 Nb4? 9.a3 Bg4 10.f3 Bf5 11.ab4 c5 12.Bc3 g6 13.e4 Be6 14.Bd3 a5 15.ba5 ba5 16.Qa4 Bh6 17.Nb3 0–0 18.Na5 Nh5 19.Ne2 Qh4 20.g3 Qh3 21.Qb3 Qg2 22.Rg1 Qh2 23.Nb7?? Ra1–/+ 24.Ba1 Rf3 25.Nd6? Qf2 26.Kd1 Ng3 27.Rg3 Qf1 28.Kc2= Rg3 29.Qb1?? Qf3 30.Ng3+– Qg3 31.b6 Qf2? 32.Kb3 Qf8 33.Be5 Bg7 34.Bg7 Kg7 35.e5 Qb8 36.b7 h5 37.Bg6 h4 38.Bf5 Bf5 39.Qf5 Qf8 40.Qf8 Kf8 41.b8Q (41.b8Q Kg7 42.Qd8 Kh7 43.Qh4 Kg7 44.Qg4 Kh7 45.Nf5 Kh8 46.Qg7#) 1–0. bentengutama (1900) – stepan (1755), net–chess.com, 2003.

4.Nf3 Ne7 5.e4 Bg4 6.Be2 g6 7.h3 Bf3 8.Bf3 ed4 9.Bd4 Bg7 10.0–0 Nbc6 11.c3 Nd4 12.cd4 Qd7 13.Nc3 0–0–0 14.Qb3 f5 15.b5 Bd4=+ 16.a4 Bc3 17.Qc3= b6 18.Rfd1 fe4 19.Be4 Rhf8 20.Rac1 Rde8 21.Bf3 h5 22.g4 hg4=+ 23.Bg4 Nf5 24.Qc6 Qf7?? 25.Qa8 Kd7+/– 26.Qa7 Ke6?? 27.Qb7 Re7+/– 28.Qd5 Kf6+= 29.Bf5 gf5?? 30.Qc4 Rg8 31.Kh2 Qc4 32.Rc4 Reg7 33.Rh4 Rg2–/+ 34.Kh1 Rf2 35.Rg1 Rg1 36.Kg1 Rc2 37.Rh6 Kg5 38.Rh7 f4 0–1. gtate (2075) – rbrunner (2115), net–chess.com, 2004.

3.d4 Nf6

4.Nc3 Bg4 5.d5 c6 6.h3 Bh5 7.g4 Bg6 8.Bg2 h5 9.g5 Nh7 10.h4 f6 11.gf6 Nf6 12.Nf3 Qb6 13.a3 a5 14.dc6 bc6 15.Na4 Qb7 16.c3 Be4 17.Rg1 Bf5 18.Nd2 Ng4 19.Nc4 d5 20.e4 dc4 (20...Nf2!? 21.Qf3 Be4 22.Qf2 Bg2=) 21.ef5+= ab4 22.ab4 (worse is 22.cb4 Qa7 23.Nc5 Bc5 24.bc5 Qc5+=) 22...Qf7 23.Be4 Be7 24.Rh1 Nf6 25.Bc2 Nbd7 26.Qe2 0–0 27.Be4 (better is 27.Ba3!?+=) 27...Ne4–+ 28.Qe4 Ra6 29.Rd1 Nf6 (29...Ra4?! 30.Rd7 Ra2 31.Bc1= (31.Qe5? Re8 32.Qe6 Rb2–+)) 30.Qc2 Rfa8 31.Nc5 Bc5 32.bc5 Ra2 33.Qb1 Nd7 34.Bc1 e4 35.Kf1 Qf5 (worse is 35...Nc5 36.Rd8 Rd8 37.Qa2–+) 36.Rd2 Ra1 37.Qc2 Ne5 38.Qd1 Nd3 39.Rd3 cd3 40.Kg2 R8a2 41.Rf1 d2 42.Qb3 (42.Qe1 Qf3 43.Kh2 de1N 44.Re1 Qf2 45.Kh3 Qf3) 42...Kh7 43.Qa2 (43.Qe6 Qf3 44.Kg1 dc1Q 45.Qe4 Qe4 46.Rc1 Rc1 47.Kh2 Qh4 48.Kg2 Rf2) 43...dc1Q 44.Qe2 Qf1 45.Qf1 Qg4 (45...Qg4 46.Kh2 Rf1 47.f4 Qe2 48.Kg3 Rf3) 0–1. Morau,Jose Roberto – Merighi,Ernesto, TT, 2004.

4.de5 de5 5.Be5 Bb4 6.Nc3? Nc6?? 7.Qd8= Nd8 8.a3 Ba5 9.e3? 0–0?? 10.Bd3?? Nc6?? 11.Bf6+= gf6 12.Nge2 Be6 13.0–0 f5 14.Na4 f4? 15.Nf4+– Bd7 16.c4 1–0. gtate (1910) – jaronson (1940), net–chess.com, 2005.

3.e4 b5

4.Bb5 c6 5.Ba4 Bd7 6.Nf3 c5 7.Bd7 Nd7 8.bc5 Nc5 9.0–0 Ne4 10.Re1 f5 11.d3 Ng5 12.Ne5 de5=+ 13.Re5 Ne7 14.Qh5 g6?? 15.Qg5+– Qc7 16.Re6 Rg8? 17.Nc3 Bg7 18.Rae1 Bc3 19.Re7 Qe7 20.Qe7# 1–0. Cavanagh,Philip – andyg132001, Yahoo! Chess, 2001.

4.Bb5+/– c6 5.Bc4 a5 6.ba5 Ra5 7.Qf3 Nf6 8.Qb3 Qe7?? 9.Qb8+– Qd8 10.d3 d5?? 11.Qe5 Be7 12.Bc3 dc4 13.Ba5 Qd7 14.Bb4 0–0 15.Qe7 Qe7 16.Be7 Re8 17.Bf6 gf6 18.Nf3 cd3 19.cd3 Bb7 20.g4 c5 21.Nbd2 Kg7 22.Nc4 Kg6 23.a4 Be4 24.de4 Re4 25.Ne3 c4 26.Ke2 c3 27.Rhc1 h5 28.gh5 Kh5 29.Rc3 Rf4 30.Rc4 Rc4 31.Nc4 f5 32.a5 Kg6 33.a6 Kf6 34.a7 Kg7 35.a8Q Kf6 36.Rg1 Ke7 37.Qb7 Kf6 38.Qc6 Ke7 39.Qc7 Kf8 40.Qd8 1–0. market (1875) – WildBoiz, GameColony.com, 2002.

4.Bb5 Bd7 5.Bd7 Qd7 6.Nc3 Nf6 7.Nf3 Nc6 8.b5 Nb4? 9.a3+– Ne4 10.Ne4 Nd5 11.c4 Nf4 12.0–0 d5 13.Ne5 Qe6 14.Ng5 Qf5 15.Ngf7 Qe4 16.f3 Qf5 17.Nh8 Qg5 18.g3 Nh3 19.Kg2 Nf4 20.Kh1 Bd6 21.Nhf7 Qf6 22.gf4 Be5 23.Ne5 Qf4 24.Qe2 0–0–0 25.Nc6 Rd6 26.Qe8 Kb7 27.Qb8 1–0. MT – guest1111, ICC, 2004.

3.e4 c5

4.bc5+= dc5 5.Be5 Nc6 6.Bg3+= Nf6 7.Nc3 Bd6 8.Bb5+/– Qe7 9.Bc6 bc6 10.Bd6 Qd6 11.Qe2 Qe6 12.Nf3 0–0 13.0–0 h6 14.Rab1+– a5 15.d3 Ba6 16.Qe3 Rad8? 17.Qc5 Nd7 18.Qa5 Bb7 19.Rb7 c5 20.a4 Rb8 21.Rfb1 Rb7 22.Rb7 Rb8 23.Rb8 Nb8 24.Qd8 Kh7 25.Qb8 f6 26.Qc7 Qe5 27.Ne5 fe5 (27...h5 28.Nd5 c4 29.Nf6 Kh6 30.Qf7 Kg5 31.Qg7 Kf4 32.Nh5) 1–0. kamera – NN, GameColony.com, 2002.

4.bc5 dc5 5.Be5 f6 6.Bb8 Rb8 7.Bc4 Ne7 8.Nf3 a6 9.e5 b5 10.Bb5?? Rb5 11.ef6 gf6 12.Qe2 Qb6 13.Nc3 Bg4?? 14.Nd5?? Qb7 15.Nf6+– Kf7 16.Qc4?? Kg7?? 17.Qg4 Ng6?? 18.0–0 c4?? 19.Ne8 Kf7 20.Rae1 Bc5 21.Ng5 Kf8 22.Qf5 Kg8 23.Qe6 Kf8 24.Qf6 Kg8 25.Qe6 Kf8 26.Nh7! Rh7?? 27.Qf6 Qf7 28.Qf7?? Rf7–/+ 29.Re4 Re7 30.Re7 Be7=+ 31.Nc7 Rb2 32.Re1 Rc2–+ 33.Na6 Rd2 34.g3? Ra2 35.Nc7 c3 36.Nd5 c2 37.Ne7 Ne7 38.Rc1 Nd5 39.Kf1 Nb4 40.Ke2 Kf7 41.Kd2 Ke6?? 42.Kc3+= Nd5 43.Kb3 Ra8 44.Rc2 Rb8 45.Ka3 Nb4? 46.Rb2+– Nc6 47.Rb8 Nb8 48.Kb3 Nd7 49.Kc2 Ne5 50.Kd2?? Ng4+= 51.Ke2 Nh2= 52.f4 Ng4 53.Kf3 Nh2 54.Kg2 Ng4 55.Kf3 Nh2 56.Kg2 ˝–˝. mduerr (1700) – segovia (1840), net–chess.com, 2009.

3.e4 Nd7

4.d4 ed4 5.Qd4 Ngf6 6.Nf3 Be7 7.Bd3 0–0 8.0–0 c6 9.Nc3 Nb6 10.a4 Bg4 11.Nd2 Qc7 12.a5 Nbd7 13.Nc4 Rad8 14.e5?? de5–/+ 15.Ne5?? Ne5–+ 16.Qa7 Nd3 17.cd3 Rd3 18.a6 Bb4 19.ab7 Bd6 20.Ba3 Bh2 21.Kh1 Rfd8 22.Qa8 Rc3 23.Bb4 Rb3 24.Ba5 Qb8 25.Bd8 c5?? 26.Qb8?? c4?? 27.Bf6 Bb8+– 28.Rfb1?? Rb1–/+ 29.Rb1 gf6 30.g3? Bf3–+ 31.Kh2 Be4?? 32.Rb4= Bd5 33.Kg1?? c3–+ 34.Rb5 Be6?? 35.Rc5+= Be5?? 36.Rc8 Kg7 37.b8Q?? Bb8–+ 38.Rb8?? c2 39.Rc8 Bc8 0–1. kamera – periklis78 (1725), GameColony.com, 2002.

4.Nf3= c6 5.Bc4 h6 6.0–0+= Ne7 7.d4 Ng6 8.Nc3 Nb6= 9.Bb3 ed4 10.Qd4 Nf4 11.Rad1 d5?? 12.Qe5 Ne6 13.ed5 cd5 14.Nd5 Nd5 15.Rd5 Qb6 16.Ba4 Ke7 17.Nh4 g6 18.Qf6 1–0. Wall,Bill – Chambers, internet, 2002.

3.e4 Ne7

4.Be2 Ng6 5.d4 Be7 6.de5= de5 7.Nf3 f6 8.Nbd2 0–0 9.0–0 Bb4=+ 10.a3 Bc5 11.c3 Nc6 12.Qb3 Kh8 13.Rab1 Bb6 14.c4 Be6 15.Qb4?? (better is 15.Rfd1–/+) 0–1. wood – DanM, Live Game Caissa's Web, 2005.

4.Nf3= Nd7 5.Nc3 =.

4.Nf3= Ng6 5.Bc4 Be7 6.0–0 0–0 7.d4 c6 8.a3 Be6 9.Be6+/– fe6 10.de5 de5 11.Qd8 Bd8 12.Ne5 Ne5 13.Be5 Bf6 14.Bf6 Rf6 15.Rd1+– Na6 16.c4 Raf8 17.f3 Nc7 18.Nc3 e5 19.Rd7 Rb8?? 20.Rc7 h6 21.Re7 Rd6 22.Re5 Rbd8 23.Re7 Rd3 24.Na4 Rd2 25.Rb7 Rc2 26.Ra7 Rdd2 27.Ra8 Kh7 28.Kh1 Rg2 29.Nc3 Rh2 30.Kg1 Rcg2 31.Kf1 Rf2 32.Ke1 Rf3?? 33.Nd1+– Rh1 34.Ke2 Rg3 35.Rd8 Rh2 36.Nf2 Rg4 37.Kf3 Rgg2 38.Rf1 Rg6 39.b5 Rf6 40.Ke3 cb5 41.cb5 Rh3 42.Nh3 Rf1 43.Nf4 g5 44.Rd7 Kg8 45.Ne6 g4 46.a4 g3 47.Rg7 Kh8 48.Rg3 Ra1 49.Nc5 Ra3 50.Kf4 Ra2 51.b6 Rc2 52.b7 1–0. kamret (2135) – danieli (1615), GameColony.com, 2003.

3.e4 Qh4

4.Nc3 Bg4 5.Nf3 Qf6 6.Nd5 Qe6?? 7.Nc7+– Kd7 8.Ne5 Kc7 9.Ng4 Qe4 10.Ne3 d5 11.Bd3 Qe5?? 12.Be5 Kc8 13.Qg4 f5 14.Bf5 Kd8 15.Nd5 Nf6 16.Bf6 gf6+– 17.Nf6 Bb4 18.Qb4 Nd7 19.Nd7 Re8 20.Kd1 b6 21.Re1 a5 22.Qb6 Kc8 23.Re8# 1–0. marekt – Everyone_is_rubbish, GameColony.com, 2002.

4.g3 Qe4 5.Be2 Qh1 6.Bf1 Qg1 7.Qe2 Qh2 8.Nc3 c6 9.0–0–0 d5 10.Qe5 Be6 11.Ne2 Bb4 12.Nf4 Qh6 13.Bh3 Ne7 14.Be6 0–0 15.Bg4 Ng6 16.Ng6 Qg6 17.Bf5 Bd6 18.Qc3 d4 19.Qd4 Qf6 20.Qf6?? gf6–+ 21.Bf6 Na6 22.Rh1 Rfe8 23.Bh7 Kf8 24.Bf5 Re1+– 25.Re1 Nb4 26.Kb1 Re8?? 27.Rh1 Re1 28.Re1 Bc5 29.Rh1 (29...Ke8 30.Rh8 Bf8 31.Bg7+–; 29.Bd7 Be7 30.Re7 Kg8 31.Bf5 Kf8 32.Rd7 Nc2 33.Rd8) 1–0. PoPer – trigger, Live Game Caissa's Web, 2004.

3.e4 h6

4.Nf3 c6 5.Nc3 Qf6 6.Be2+= Be7 7.d4 ed4 8.Nd4+/– Qg6 9.0–0 Bh3 10.Bf3 h5 11.Nce2 Bg4 12.Qd3 Nd7 13.Bg4 hg4 14.Nf5 Qh5?? 15.Ng7+– Kf8 16.Nh5 Rh5 17.f4 Bf6 18.Qd6 Be7 19.Qd7 (19.Qd7 Rb5 20.Qg4 Bb4 21.Rad1 Bc5 22.Bd4 Bd4 23.Nd4+–) 1–0. again – smolla, Live Game Caissa's Web, 2005.

4.Qh5 Nf6 5.Qf3 Bg4 6.Qb3 Be6 7.c4? Nc6 8.Qa4 Bd7 9.b5 Nb8 10.Be2 Na6 11.d4 Ne4?? 12.Nf3?? Nec5?? 13.Qa5 b6 14.Qc3 Ne4 15.Qe3+/– Nac5 16.dc5 Nc5 17.0–0 Be7 18.Nc3 Be6 19.a4 Nb3 20.Rad1 Nd4 21.Nd4 ed4 22.Qd4 Bf6 23.Qe3 0–0 24.Bf3 Bg5 25.Qe2 Re8 26.Qd3 Qc8 27.Ba8 Qa8 28.Ne4 Qd8 29.Qd4 f6 30.Qd3 Qd7 31.Ng5 hg5 32.Qg6 Bf7?? 33.Qd3 Be6 34.Rfe1 Qf7 35.h3 Rf8 36.g4 Bc4 37.Qf5 Bb3 38.Rd4 Re8 39.Re8 Qe8 40.Re4 Qf7 41.Qc8 Kh7 42.h4! Qg6 43.Re8 Qb1 44.Kg2 Bd5 45.Kg3?? gh4 46.Kh4?? Qh1 47.Kg3 Qg2 48.Kh4 Qh2# 0–1. alarconconsult – astrop, internet, 2007.

3.Nf3 b6

4.e3 Bb7 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 b6 4.e3 Bb7 5.Nf3).

4.e4= Bb7 5.Nc3 Nf6 6.d4 ed4 7.Qd4+= Be7 8.Bb5 Nbd7 9.0–0 0–0 10.Rad1 c5 11.bc5 Nc5 12.Bd3 Ne6 13.Qc4 Qc7 14.Rfe1 (14…Nc5 15.Qd4+=). Gall,Zdenek – Icic,Mladen, corr 3GMM–27, 1995.

3.Nf3 Bd7

4.e3 Bc6 5.d4 Nd7 6.de5 Ne5 7.Ne5 de5 8.Nc3 Bb4 9.Be2 Bg2 10.Rg1 Be4 11.a3 Ba5 12.Kf1 Bf5 13.Bg4 Nh6 14.Bf5 Nf5 15.Qg4 g6 16.Rd1 Qf6 17.Nd5 Qa6 18.Rd3 0–0–0 19.e4 h5 20.Qg5 Rd7 21.ef5 Rd5 22.fg6 Rd3 23.cd3 Qd3 24.Kg2 fg6 25.Be5 Qd5 26.Kh3 Qe6 27.Kg2 Rf8 28.Qe3 Bb6 29.Bd4 Qg4 30.Kh1 Qd4 31.Qe6 Kb8 32.Rg6 a5 33.Rg8 Qd1 34.Kg2 Qf3 35.Kf1 Qf2# 0–1. guest33 – guest509, ICC, 1999.

4.e4 a6 5.d4 ed4 6.Nd4 Nc6 7.a3 Nf6 8.Nd2 Nd4 9.Bd4 Qe7 10.Bd3 0–0–0 11.0–0 h6 12.c4 g5 13.b5 ab5 14.cb5 Bg7 15.Qa4 b6 16.Qa8 +–. kamret (2220) – Postakov, GameColony.com, 2003.

3.Nf3 Be7

4.d3 Nf6 (--> 3.Nf3 Nf6 4.d3 Be7).

4.e3 b6 5.Be2 Bb7 6.0–0 Nh6 7.d3 0–0 8.Nbd2 Bg5 9.d4 Bf3 10.Bf3 c6 11.de5 de5 12.b5 Qd7 13.bc6 Nc6 14.Nc4 Qd1 15.Rad1 Rac8 16.Ne5 Bf6 17.Nd7 Rfe8 18.Bf6 Re6 19.Bg5 Nb4 20.Nb6 Rb6 21.Rd8 Rd8 22.Bd8 Rd6 23.Be7 Rb6 24.Bc5 Rb7 25.Bb7 Nc2 26.Rd1 Kh8 27.Rd8 Ng8 28.Ba7 Nb4 29.a4 h6 30.Kf1 Kh7 31.Be4 g6 32.f4 Nf6 33.Bb1 Ng4 34.h3 Ne3 35.Be3 Nc6 36.Rd7 Na5 37.Rf7 Kg8 38.Bg6 Nc6 39.Rc7 Na5 40.Ra7 Nc4 41.Bf7 Kg7 42.Bc4 Kf6 43.Bd4 Kf5 44.g3 Ke4 45.Bg7 h5 46.Re7 Kf5 47.Re5 Kg6 48.Rg5 Kh7 49.Bd4 Kh6 50.Bd3 h4 51.Rg4 hg3 52.Rg3 Kh5 53.Rg5 Kh4 54.a5 Kh3 55.a6 Kh4 56.Bf2 Kh3 57.Bf5 Kh2 58.Rh5# 1–0. BorisOwl – cuegt, gamecolony.com, 2000.

4.e3 Be6 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.Nf3 Be7).

4.e3 f5 5.c4 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7).

4.e4 a6 5.c4 Nf6 6.Nc3 Bg4 7.h3 Bf3 8.Qf3 Nc6 9.a3 Nd4 10.Qd3 0–0 11.Ne2 Ne2 12.Be2 h6 13.0–0 Nd7 14.Bg4 Bg5 15.Bd7 Qd7 16.Be5! Rad8 17.Bc3 Rde8 18.f4 Bd8 19.f5 f6 20.Qd5 Kh8? 21.Qb7 Re4 (21...Qa4+–) 1–0. pcmvr – Tuatara, ChessWorld.net, 2002. 3.Nf3 Bf5

3.Nf3 Bf5

4.e3 Nf6 5.a3 Nbd7 6.Bd3 Bg6 7.Bg6 hg6 8.0–0 Be7 9.d4 ed4 10.Bd4 c5 11.bc5 dc5 12.Bc3 0–0 13.Ne5 Ne4 14.Nd7 Nc3 15.Nc3 Qa5 16.Nd5 Bf6 17.N5f6 gf6 18.Nf6 Kg7 19.Qf3 b6 20.Nd7 Rh8 21.Qf6 Kg8 22.Ne5 Rh7 23.Rad1 Qc3 24.Rd7 Re8 25.Nf7 Qf6 26.Rd2 Qf7 27.Rfd1 Qc7 28.g3 Rhe7 29.Re2 Rd7 30.Rde1 Rf8 31.f4 Rfd8 32.Kf1 Rd1 33.Kf2 Re1 34.Re1 Qc6 35.Re2 Qh1 36.Re1 Qh2 37.Kf3 Rd2 38.Rf1 Qg2 39.Kg4 Qf1 40.e4 Rc2 41.e5 Qe2 42.Kg5 Kg7 43.g4 Rc4 44.a4 Qe3 45.a5 Qf4 46.Kh4 Qg4# 0–1. ronnieg (2570) – judicorum (2730), TIO_47 (fics, Oklahoma City, OK USA) (6), 2001.

4.e3 Nf6 5.Nh4 Bg4 6.Be2 Be2 7.Qe2 Nd5 8.Nf5 Nb4 9.Qb5 N8c6–/+ 10.Na3 Qc8 11.c3? Na6?? 12.Ng3 Nc5 13.0–0? Qg4 14.d4= a6 15.Qc4 Ne4?? 16.Ne4?? Qe4=+ 17.Qe2 Be7 18.f3 Qf5 19.d5 Nd8 20.e4 Qd7 21.c4 c6 22.Qf2 cd5 23.cd5 b5 24.Qg3 Qa7 25.Kh1 Rc8 26.Qg7+/– (26…Rf8 27.Rac1 Rc1 28.Rc1+/–) 1–0. pinecrest1981 – colin, Live Game Caissa's Web, 2004.

3.f4 f6

4.e4 g6 5.Nf3 Bg7 6.Bc4 Ne7 7.0–0 Bg4 8.d4 ef4+= 9.Nbd2 c6 10.d5 0–0?? 11.h3?? Bf3 12.Qf3 g5?? 13.dc6+– d5? 14.cb7 Nbc6 15.ba8Q Qa8 16.ed5 Ne5 17.d6 Nc4 18.Qb3 Nd5 19.Nc4 Kh8 20.Rad1 Ne3 21.Ne3 fe3 22.Qe3 Qc6 23.d7 Rd8 24.Qe7 Qc7 25.Qe8 (25.Qe8 Re8 26.de8Q Bf8 27.Qf8) 1–0. gtate (1930) – petemarkou (2000), net–chess.com, 2006.

4.fe5 de5=+ 5.b5 a6 6.c4 c6 7.a4 e4 8.e3 f5 9.Nc3 Nf6 10.Nh3 Bd6 11.d4 ed3 12.Qd3 0–0 13.0–0–0 Bc7 14.Qd8 Rd8 15.Be2 Bd7 16.Nf4 Re8 17.Rd3? ab5–/+ 18.ab5 Bf4 19.ef4= cb5 20.cb5 Ne4 21.Ne4 Re4 22.Bf3 Rc4 23.Kb1 Rb4+– 24.Rhd1 h6?? 25.Rd7+– Nd7 26.Rd7 Rf4 27.Rg7 Kf8 28.Rb7 Rd8 29.Bg7 Kg8 30.Bh6 Rb4 31.Kc2 Rc8 32.Kd3 Rb3 33.Kd4 Rf3 34.gf3 Rd8 35.Ke5 (35.Ke5 Rd3 36.f4+–) 1–0. Jernselius,Kjell – Bergstroem,Goeran, Hallstahammar op, 2003.

4.Nf3 Be6 5.e4 ef4=+ 6.Nd4 Bd7 7.Bc4 Nc6 8.Ne6 (8.0–0 Nb4 9.a3 Nc6=) 8...Be6 9.Be6 Qe7 10.Qg4 (10.Bd5 Nb4 11.0–0 Nd5 12.ed5 Qf7=+) 10...Nh6 (10...Nb4 11.Na3–/+) 11.Qh5=+ g6 12.Qd5 Nd8 13.0–0?? Qe6 14.Nc3 Qd5 15.Nd5 Ne6 16.Nf6 Kf7 17.Nd7? Bg7 18.Bg7 Ng7 19.Rf4 Ke7 20.Nf6 c6 21.Raf1 Ne6 22.R4f2 Raf8 23.c3 Rf7 24.d4 Rhf8 25.e5 de5 26.de5 Nc7 27.c4 Nf5 28.Rd1 Ke6 29.Ng4? Rd7 30.Rd7–/+ Kd7 31.Nf6 Ke6 32.Nh7 Rd8 33.g4 Rd1 34.Kg2 Ne3 35.Kg3 Rg1 36.Kf3? Ng4 37.Rg2 Rg2 38.Kg2 Ne5 0–1. gtate (1970) – demerick (2240), net–chess.com, 2006.

3.g3 Be6

4.Bg2 c6 5.d3 Nd7 6.Nf3 Qc7 7.Ng5 Bf5 8.e4 Bg6 9.0–0 h6 10.Nf3 f6 (10...Ngf6!?+=) 11.Nc3 Bf7 12.Qd2 (12.a4 Ne7+/–) 12...g5+/– 13.a4 h5 14.a5 (14.b5 Ne7+/–) 14...h4+= 15.h3 hg3 16.fg3 Bh6 (16...Nh6 17.g4+=) 17.Qf2+/– Be6 18.a6 b6 19.b5 c5 (19...g4 20.hg4 Bg4 21.d4+/–) 20.Ra4 g4 (20...Ne7 21.g4+/–) 21.hg4 Bg4 22.Nd5 Qd8 23.Nh4 Bg5 24.Nf5 (24.Bf3 Be6 25.Nf5 Bf5 26.ef5 Rb8+–) 24...Bf5 25.ef5 (25.Qf5?! Ne7 26.Qf3 Nd5 27.ed5 Qe7+=) 25...Ne7 (25...Rb8 26.Nc3+–) 26.Nc3 Rc8 (26...Bh6 27.Ba8 Qa8 28.Rh4+–) 27.Ne4 Qc7 (27...Kf8+–) 28.Ng5 fg5 29.f6 Ng6 (29...Rf8 30.f7 Kd8 31.Bb7+–) 30.Qf5 Kf7 (30...Ndf8 31.f7 Kd8+–) 31.Bd5 Kf8 32.Qg6 Qd8 (32...Nb8 33.Rh4! gh4 34.Bc1 e4 35.Bh6 Rh6 36.Qg8) 33.Qf7 1–0. pierred – anony, internet, 2014.

4.Bg2 c6 5.d3 Nf6 (--> 3.g3 Nf6 4.Bg2 c6 5.d3 Be6).

4.Bg2 c6 5.e3 Qd7 6.Nf3 Bh3 7.0–0 Bg2 8.Kg2 Nf6 9.Nc3 Na6 10.a3 Be7 11.d3 h5 12.h3 Nc7 13.Ng5 Nfd5 14.Nd5 Nd5 15.Nf3 g5 16.Nd2 f5 17.c4 Nf6 Black prepares g4 18.f4 g4 19.h4 (worse is 19.fe5 de5 20.h4 Qd3 21.Be5 0–0–0–/+) 19...ef4 20.Rf4 Rf8 21.Qe2 0–0–0 22.Raf1 Nh7 23.Nb3 c5 24.d4 Rf7 (24...Nf6!?+/–) 25.e4 1–0. Macedo,A Soares De (2050) – Lima Junior,J A Costa (1885), 3rd Aberto Xadrez Potiguar, 2008.

3.g3 Ne7

4.Bg2 c6 5.c4 g6 6.d4 (6.Nf3 Qb6 (6...Bg7 7.0–0 f5 8.b5 Be6 9.d3 cb5 10.Ng5 Bc8 11.cb5 d5=) 7.a3 Bg7 8.c5 dc5 9.Ne5 Qc7 10.Nd3 Bb2 11.Nb2 cb4=) 6...f6 (6...Nf5!?= 7.de5 de5 8.Qd8 Kd8 9.c5 Nd4 10.Na3 a5 11.0–0–0 ab4=; 6...Nd7 7.Nf3 e4 8.Nfd2 d5 9.0–0 Qb6 10.a3 h5 11.h3 Bg7=; 6...Bg7 7.de5 Be6 8.Nf3 Bc4 9.Qc2 d5 10.Na3 Ba6 11.0–0 0–0=; 6...Be6 7.de5 Bg7 8.Nf3 Bc4 9.Qd2 d5 10.Na3 Ba6 11.0–0 0–0=; 6...Qc7 7.Nf3 e4 8.Nfd2 d5 9.0–0 Nf5 10.Qb3 Qd6 11.b5 Nd7=) 7.Nd2 (7.Nf3 e4 8.Nfd2 d5 9.0–0 Nf5 10.Qb3 Be6 11.a3 Na6=) 7...Bd7 (7...Nf5 8.Ngf3 Qb6 9.a3 Bg7 10.c5 dc5 11.dc5 Qc7+=) 8.Ngf3 Bg7 9.0–0 a5 (9...0–0 10.a4 Be6 11.Qc2 Nd7+=) 10.a3 (10.c5 Nf5 11.Nc4 ab4+/–) 10...a4 (better is 10...0–0!?+/– 11.e4 Be6+=) 11.Ne4 Qc7 (11...Nc8+/–) 12.de5 de5 13.Nd6 Kf8 14.c5 b6 15.Qc2 (15.cb6 Qb6 16.Rc1 Be6+–) 15...Nf5 16.Rad1 bc5 17.bc5 (17.Qc5?! Na6 18.Nb5 Nc5 19.Nc7 Ra7+=) 17...Nd6 18.Rd6 Ke7 19.Qc4 Ra5 20.Rfd1 Rd8 (20...Qb7 21.Bc3 Ra7+–) 21.Qh4 Rc5 22.Be5 Re5 23.Ne5 h5 (23...Qd6 24.Rd6 Kd6 25.Nf7 Ke7 26.Nd8 Kd8 27.Qh7 Bf8+–) 24.Ng6 Ke8 25.Qh5 (25.Qc4 Qd6 26.Rd6 Bf8 27.Rf6 Be6 28.Qe6 Be7 29.Qe7) 25...Bf8 26.Ne5 (26.Ne5 Ke7 27.Qf7) 1–0. Ilbilgi,Bulut – Sahiner,Altug, Antalya Bir, Antalya TUR, 2009.

4.Bg2= Ng6 5.Nf3 Be7 6.0–0 c6 7.e4 0–0 8.d4= f6 9.c4 Nd7 10.Qb3 Kh8 11.a4 b6 12.Nbd2 c5 13.dc5 dc5 14.b5 Re8 15.Rfd1 Qc7 16.Nf1 Ndf8 17.Ne3 Ne6 18.Nd5 Qb7 19.a5 Bd8 20.Bc3 Nd4+= 21.Nd4 cd4 22.Bd2 Nf8 23.Bb4 Ne6 24.Ra2 a6 25.ab6+/– Bb6 26.Rda1 Nc5 27.Bc5 Bc5 28.Ra6 Ra6 29.Ra6 Bd7 30.Qa2 Rb8 31.Bf1 Kg8 32.Bd3 Kh8 33.Qa5 h6 34.Kg2 Kh7 35.h4 Kh8 36.f3 Kh7 37.g4 Qc8 38.Kg3 Kh8 39.h5 Kh7 40.Qa2 Kh8 41.Qa5 Kh7+– 42.b6 Bd6? 43.Ra7 Kh8 44.c5!+– Qc5? 45.Qc5 Bc5 46.Rd7 Bb6 47.Nb6 Rb6 48.Bc4 Rb8 49.Bf7 Rf8 50.Bg6 Ra8 51.f4 ef4 52.Kf4 Rb8 53.Rd4 Ra8 54.Kf5 Rf8 55.Rd7 Ra8 56.Ke6 Ra6 57.Ke7 Ra8 58.Kf7 Rb8 59.Bf5 Ra8 60.Kg6 Rg8 61.Be6 Re8 62.Bd5 f5 63.Rg7 Re6 64.Be6 (64.Be6 fe4 65.Rh7#) 1–0. Stolzengold (1850) – interkonekcija (1800), internet, 2007.

3.h3 a5

4.b5= c5 5.Nc3 b6 6.e4 Nf6 7.Bc4 Bb7 8.Qe2 Be7 9.Nf3 0–0 10.a4 h6 11.0–0 Nbd7 12.Nh4 Ne4= 13.Ne4 Be4 14.Qe4 Bh4 15.Ra3 Be7 16.Rd3 Kh8 17.Qf3 f5 18.Qg3 Nf6 19.Be5!+/– Nh5? 20.Qg6+– Qe8 21.Qh6# 1–0. pierre – psykopat, internet, 2009.

4.b5 Bd7 5.Nc3 a4 6.Nf3 a3 7.Bc1 Be7 8.e4 Bf6 9.Bc4+= Ne7 10.0–0 Be6 11.Be6 fe6 12.Rb1 0–0 13.Rb3 c6 14.Qe2 c5 15.Qc4 d5 16.Qc5 d4 17.Ne2 b6 18.Qc4 Qd6 19.Rd3 Nd7 20.Ba3! Ra3 21.Ra3 Rc8 22.Qb3 Nc5 23.Qb2 Ne4 24.d3 Nc3 25.Nc3 dc3 26.Qb3 e4 27.de4 Ng6 28.Ra7 Ne5 29.Ne5 Be5 30.a4 Kh8 31.a5 Bd4 32.Qc4! Bc5 33.Qc3 e5 34.a6 h6 35.Qg3 Rg8 36.Rb7 Qf6 37.a7 (37…Rd8 38.Rb8+–) 1–0. pereira – stomii, internet, 2009.

3.a3 a5

4.b5 Bd7 5.Nc3 Nf6 6.e4 Be7 7.Nf3 0–0 8.Bc4 c6 9.a4 Bg4 10.h3 Bf3 11.Qf3+= Nbd7 12.bc6 bc6= 13.0–0 Rb8 14.Rab1 Nb6 15.Be2 d5 16.ed5 cd5 17.Nb5 e4 18.Qg3 Na4 19.Be5 Bd6?? 20.Nd6+– Rb1 21.Rb1 (21.Rb1 g6 22.Nf5+–) 1–0. pierre – nenad127, internet, 2008.

4.b5 Be7 5.Nf3 Nf6 6.e3 0–0 7.Be2= Bf5 8.Nc3 Nbd7 9.0–0 Nc5 10.d4 Ne6 11.Nh4 Bg6 12.Ng6+/– fg6 13.de5+– de5 14.Bc4 (14.Bc4 Qc8 15.Nd5+–) 1–0. b4_player – opponent, gamecolony.com, 2007.

4.b5 f5 5.c4 Nd7 6.d4 ed4 7.Nf3 Nc5 8.Bd4 Be6 9.e3 Nf6 10.Be2 Be7 11.Ng5 Bd7 12.0–0 0–0 13.Nc3 Qe8 14.Nh3 c6 15.bc6 Bc6 16.Nd5 (16.Nf4!?+=) 16...Nd5= 17.cd5 Ba4 18.Qe1 Bf6 19.Bf6 Rf6 20.Nf4 Qe5 21.Rc1 Qb2 22.Qc3 Qc3 23.Rc3 Re8 24.Rb1 Rf7 25.Rb6 Rd7 26.Ne6 (26.Nd3 Nd3 27.Bd3 g6+–) 26...Ne6+= 27.de6 Re6 28.Bc4 d5 29.Re6 dc4 30.Kf1 b5 31.Rb6. Fournier,Frederic – Dupuy,Nicolas, Match Corr, 1998.

4.Bc3 ab4 5.Bb4 Nc6 6.e3?? Nb4–+ 7.Nc3 Nc6 8.a4 Nf6 9.Bb5 Bd7 10.Nge2 Be7 11.Bc6 Bc6 12.0–0 0–0 13.Ng3 Bd7 14.Nge4 Bg4 15.f3?? Bh5 16.Rb1 d5 17.Nf6 Bf6 18.Rb7 e4 19.g4 Bg6 20.fe4 d4 21.ed4 Bd4 22.Kh1 Bc3 23.dc3 Be4 24.Kg1 Bb7 (24...Bb7 25.Qd8 Rfd8–+) 0–1. ahmed sharkawy_1 – SirGraves, ChessWorld.net, 2005.

4.e4 ab4 5.ab4 Ra1 6.Ba1 Nf6 7.d3 b5 8.Nf3= h6 9.Be2 Nc6 10.Qd2 Nd4? 11.Bd4 ed4 12.Nd4 Bd7 13.0–0 c6 14.Nc3 Qb6 15.Nb3 Be7 16.Kh1 0–0 17.Qe3 Qe3= 18.fe3 d5 19.ed5+= Nd5 20.Nd5+/– cd5 21.Nc5 Bc5 22.bc5 b4 23.Bh5 f6 24.Bf3 Bc6 25.Ra1 h5 26.Ra6 Rc8?? 27.Rb6 Ba8 28.d4 Rc6?? 29.Rb8 (29...Kf7 30.Bd5 Ke7 31.Ra8+–; better is 29.Bd5 Kf8 30.Bc6 Bc6 31.Rc6 Ke8+–) 1–0. Wall,Bill – Toast, Internet, 2003.

4.b5 b6

5.c4 Bb7 6.Nc3 g6 7.Nf3 Bg7 8.Nd5 Ne7 9.e4 0–0 10.h4 f5 11.d3 Bd5 (11...h6 12.Be2=) 12.cd5+= Nd7 (12...h6 13.Qc2+=) 13.Ng5 (13.h5!?+/–) 13...Nc5= 14.Be2 Qd7 15.a4 (15.h5!? h6 16.Ne6 Ne6 17.de6 Qb5 18.Qc2=) 15...h6–/+ 16.Ne6 Ne6 17.de6 Qe6 18.h5 g5 19.Rc1 Rac8 20.0–0 d5 (20...c6 21.bc6 Qa2 22.Ba1 Rc6 23.Rc6 Nc6 24.ef5+=) 21.Re1 d4 (21...c6 22.bc6 Rc6 23.Rc6 Qc6 24.Ba3=) 22.ef5 Nf5 (22...Qa2 23.Rb1=) 23.Bg4 Qf6 (23...Qa2 24.Re2 Qd5 25.Ba3+=) 24.Rc6 Nd6 25.Re2 Qf4? (better is 25...Rce8+=) 26.Bc8 Rc8 27.Ba3 Bf8 (27...Ne8+–) 28.Qb3 Kh8 (28...Qf7 29.Qf7 Nf7 30.Bf8 Kf8 31.Rec2+–) 29.Bd6 (29.Qe6!? Re8 30.Qg6 Qf7 31.Rd6 Qg6 32.Rg6 Ba3 33.Rh6 Kg8 34.Rg6 Kh8 35.Rg5 Bd6+–) 29...Bd6 30.Qe6 Rf8 31.Qh6 Kg8 32.Qg6 Kh8 33.h6 Rg8 34.Qe6 e4? 35.g3 (35.g3 Qf3 36.Qe4+–) 1–0. Zhang Pengxiang (2565) – Garcia,Hugo, Internet Section, 2004. (=1.a3 d6 2.b4 e5 3.Bb2 a5)

5.d4 Nd7 6.e4 Ngf6 7.Nc3 g6 8.de5 Ne5 9.f4 Ned7 10.Qd4 Bg7 11.e5 11...de5=+ 12.fe5 Qe7 13.Nf3+/– Bb7 14.0–0–0 Nh5 15.Nd5+/– Bd5 16.Qd5 Rd8 17.Qc4 0–0 18.Qc7 Rfe8 19.Bc4 Nf4 20.Ba2 Ng2 21.Rd6+– Ne3 22.e6 Bb2 23.Kb2 Qf6 24.Nd4 (24.Nd4 fe6 25.Rd7+–) 1–0. Riepe,Bernhard (2050) – Busch,Stefan (1800), Telechess, 2004.

4.b5 Nf6

5.e3 Be7 6.d4 e4 7.c4 c6 8.Nc3 d5 9.c5 0–0 10.Nge2 b6 11.Rc1 cb5 12.Nb5 Nc6 13.Ng3 Rb8 14.Be2 h5 15.h4 g6 16.Qd2 Be6 17.cb6 Qb6 18.0–0 a4 19.Rc2 Na5 20.Nc3 Bd7 21.Rb1 Rfc8 22.Nf1 Nb3 23.Qe1 Qa5 24.Qd1 Ng4 25.g3 Rb6 26.Na2 Rc2 27.Qc2 Rf6 28.Bg4 Bg4 29.Qc3 Qa6 30.Qe1 Qe6 31.Nh2 Bf3 32.Nf3 Rf3 33.Nc1 g5 34.hg5 Bg5 35.Ne2 h4 36.Bc3?? (better is 36.Kg2!?–/+) 36...Qg4 (36...hg3 37.Ng3 Be3 38.fe3 Qh3–+) 37.Rb2 hg3 (37...hg3 38.Ng3 f5–+) 0–1. Louro,Eugenio (1740) – Myers,David Robert (2345), WC–2005–F–00002, 2006.

5.Nf3 =.

5.g3 Be6 6.Bg2 Qc8 7.d3 Nbd7 8.c4 Nc5 9.Nc3 g6 10.Bc1 Bg7 11.Be3 Nfd7 12.Rb1 a4 13.Rb4 0–0 14.Na4 Na4 15.Ra4 f5 16.Nf3 h6 17.h4 Nf6 18.Ra8 Qa8 19.Qc1 Ng4 20.Bd2 Qa7 21.0–0 Kh7 22.Bb4 e4 23.Nh2 ed3 24.Ng4 de2 25.Re1 fg4 26.Re2 Bd7 27.c5 Bb5 28.Re7 dc5 29.Bc3 Rg8 30.Bd5 Qb8 31.Bg8 Qg8 32.Qb2 (32.Qb2 Bc4 33.Rg7 Kh8 34.Rc7 Qg7 35.Bg7 Kg8 36.Rc8 Kf7 37.Qf6#) 1–0. Heinola,Kari – Kuro,Timo, Vammala, 1984.

3.a3 a6

4.c4 c5 5.bc5 Nc6 6.cd6 Bd6 7.g3 Be6 8.d3 Nf6 9.Bg2 Qb6 10.Qc1 Bc5 11.e3 Na5 12.Qc2+= Rd8 13.Be5+/– Be3? 14.fe3?? Qe3= 15.Qe2 Rd3?? 16.Bf6+– Qc1 17.Kf2 Qc4 18.Nd2 Qc5 19.Kf1 Qf5 20.Ngf3 Qf6 21.Qd3 g5?? 22.Re1 0–0 23.Re5 b5 24.Rg5 Kh8 25.Kf2 Re8 26.Rh5 h6 0–1. KrustytheClown – Garyman, ChessWorld.net, 2005.

4.c4 Be6 5.e3= Nd7 6.Nf3 h6 7.d4+= e4 8.Nfd2 Ngf6 9.Nc3 Bf5 10.Qc2 Bg6 11.Nce4 Ne4 12.Ne4 d5 13.cd5+– Nf6 14.Nf6 gf6 15.Bd3 Bd3 16.Qd3 Qd5 17.0–0 Bd6 18.e4 Qh5 19.e5! fe5 20.de5 Be7 21.e6! 0–0? 22.Qg3 Qg5 23.Qg5 Bg5 24.Rfe1 Rae8 25.ef7 Kf7+/– 26.Be5 Re5? 27.Re5+– Bf6 28.Rf5 Kg6 29.Rf3 Rd8 30.Re1 Rd6 31.g3 h5 32.Re8 h4 33.gh4 Bh4 34.Rg8 Kh7 35.Rg4 Rg6 1–0. Stroppa,Daniel (2270) – Pantelic,Dimitry (1820), Yvelines–ch Fontenay le Fleury, 2003.

4.c4 Nf6 5.e3 c5 (5...Be7 6.Ne2+=) 6.Qc2 (6.bc5 Nc6 7.d4=) 6...b5 (better is 6...Nc6!?+=) 7.cb5+/– ab5 8.bc5 dc5 9.Be5 Bd6 (better is 9...c4!? 10.a4 Bb7 11.ab5 Ra1 12.Ba1 Be4+–) 10.Bb5+– Kf8 11.Qd3 Ke7 12.f4 Ne8?? (12...Be6+–) 13.Bg7! Ng7 14.Qe4 Theme: Double Attack 14...Kf8 15.Qa8 (15.Qa8 Qh4 16.g3+–) 1–0. Woelfelschneider,Peter – Eife, 2009.

4.c4 Bg4 5.h3 Bh5 6.d3 Nf6 7.Nf3 Nc6 8.e3 b5 9.cb5 ab5 10.Be2 (10.d4 Rb8 11.g4 Bg6+/–) 10...d5 (10...Ne7!?=) 11.Ne5 Be2 12.Qe2 Ne5 13.Be5 Bd6 14.Bd6 Qd6 15.0–0 0–0 16.Nc3 c6 17.Qc2 Rfe8 18.Ne2 Nd7 19.Nd4 Rec8 20.Rfc1 Ne5 (20...h6 21.a4 (21.Nc6?! Ne5=) 21...ba4 22.Ra4 Ra4 23.Qa4+–) 21.f4 (21.Nb5 Qg6 22.Nd4 c5 23.bc5 Nd3+–) 21...Ng6 22.Nf3 (22.Qc5!? Qf6+/–) 22...h6 23.Rd1 Re8 24.Re1 Ne7 25.Ne5 Ra6 26.g4 f6 27.Nf3 Raa8 28.d4 Ng6?? (28...Ra4 29.Qd3+=) 29.Re2 (better is 29.Qg6 Qd7 30.Nh4+–) 29...Kf7 30.Nh4?? Nh4–+ 31.Kf2 Ng6 32.Kf3 Re4 33.Qc3 Rae8 34.Rae1 Nh4 35.Kf2 g5 36.Qd2 Ng6 37.f5 Qh2 38.Kf1 Qh3 39.Kf2 Nh4 40.Kg1 Nf3 41.Kf2 Nd2 42.Rd2 Re3 (42...Re3 43.Re3 Qe3 44.Kf1 Qd2 45.a4 Re1) 0–1. Fournier,Frederic – Lepkedj, Partie evaluee, 5m + 0s, 2007.

4.e3 b5 5.Nf3 Bb7 6.Be2 h6 7.0–0+= g5 8.d3 Bg7 9.Nbd2 f5 10.c4 g4 11.Ne1 h5 12.g3 h4= 13.Ng2 hg3=+ 14.fg3 Qf6 15.d4 Qh6–+ 16.Nh4 Bf6 17.Bg4?? Bh4 18.Rf5 Bg3! 19.Rh5?? Qe3 20.Kf1 Qf2# 0–1. Onkel_Luis – claris, ICC, 2003.

4.e3 Nc6 5.d4 Bf5 6.de5 de5 7.Nc3 Qd1=+ 8.Kd1 Nf6 9.Bd3 Rd8 10.Ke2 e4 11.Bc4 Be7 12.Nh3 Bg4 13.Ke1 Ne5 14.Be2 Be2 15.Ne2 Nc4 16.Bd4 0–0 17.f3 ef3 18.gf3 Nd5 19.e4 Nde3 20.Rc1 Bh4 21.Nf2 Bg5 22.Rg1 Bh6 23.Nh3? g6?? 24.f4=+ Rfe8 25.e5 Nf5 26.c3 Nd4 27.cd4= b5 28.a4 c6 29.ab5 cb5 30.Ra1 Ra8 31.Nc3 Ne3 32.Ra2 Bf8–/+ 33.Re2 Nf5 34.Nd5? Red8–+ 35.Nf6 Kh8 36.Ng5? Bb4 37.Kf1 Rd4 38.Ngh7? Rd1 39.Kg2 Rg1 40.Kg1 Bc5 41.Kf1 Be3 42.Ng4 Bf4 43.Nhf6 Rd8 44.Ra2 Ra8 45.Nd5?? Bg5 46.Nc7 Rc8 47.Na6 Rc4 48.Nf2 Ra4 49.Ra4 ba4 50.Ke1? a3 51.Nb4 Nd4 52.Nd1 Nf3 53.Ke2 Nh2 54.Nc2 a2 55.Nc3 Ng4 56.Na2 Ne5 57.Nc3 f5 58.Nd1 f4 59.Nd4 Bf6 60.Nf2 g5 61.Nh3 Kg7?? 62.Ne6–/+ Kg6 63.Nef4 gf4 64.Nf4 Kf5 65.Nd5 Bg5 66.Ne3 Ke4 67.Ng2 Nd3 68.Ne1 Nf4 69.Kf2 Bh4 70.Kf1 Nd5 ˝–˝. Vuong Quynh Huong – Tran T My,Duyen, VIE–ch U11 Girls, 2005.

4.e3 Bd7 5.h3 Be7 6.Nc3 Bc6 (6...Nf6!?=) 7.d4+= ed4 8.ed4 Nf6 (8...d5 9.Nf3+=) 9.d5+/– Bd7 10.Nf3 0–0 11.Be2 (11.Bc4 a5+/–) 11...c6+= 12.0–0 cd5 13.Nd5 Nd5 14.Qd5 Bc6 15.Qf5 (15.Qb3 Bf6+=) 15...Nd7+= 16.Rfe1 Bf6 17.Nd4 Nb6?? (better is 17...Ne5+=) 18.Nc6+– bc6 19.Bd3 g6 20.Qf6 (20.Bf6?! gf5 21.Bd8 Rfd8 22.Bf5 a5+/–) 20...Qf6 21.Bf6 Rfe8 (21...Rfc8 22.g4+–) 22.Re8 Re8 23.Ba6 Nd5 24.Bb2 Nf4 (24...Rb8 25.Rd1 Kf8 26.c4+–) 25.Rd1 d5 26.c4 dc4 (26...Kf8 27.Kf1+–) 27.Bc4 Ne2 (27...Kf8+–) 28.Be2 Re2 29.Rd8 1–0. marektheim – creed, internet, 2015.

4.e3 Be7 5.Nc3 Nf6=+ 6.Bc4 b5 7.Bd5 Nd5 8.Nd5 Bb7 9.Qf3 Bd5 10.Qd5= c6 11.Qf3 0–0 12.Ne2 a5 13.0–0 Qc7 14.d4 Nd7 15.Ng3 g6 16.e4= Bf6 17.c3 Bg7 18.Qe3 Rfe8 19.Qg5 ed4 20.cd4= ab4 21.ab4 c5 22.Ra8 Ra8 23.Qd2 c4 24.Ra1 Ra1 25.Ba1 Qa7 26.Bc3 Nb6 27.d5 Na4 28.Bg7+= Kg7 29.Qg5 Qd4?? 30.Nf5 (30.Nf5 Kg8 31.Qd8#) 1–0. Durez,Cedric (1710) – Fredoueil (1650), Paris Apsap op, 2002.

4.e3 Bf5 5.c4 Nd7 6.Nc3 Ngf6 (6...a5 7.d4=) 7.Nge2 (7.Qf3!? Be6 8.Qb7+=) 7...Be7 8.Ng3 Bg6 9.Be2 0–0 10.0–0 c6 11.f4 ef4 12.ef4 h6 13.f5 Bh7 14.d4 d5 15.c5 b6 16.Bd3 bc5 17.dc5 Ne5 18.Nce2 Nfg4 19.Bd4 Bg5 20.Qb3 Be3 21.Kh1?? (better is 21.Be3 Qh4 22.h3 Ne3 23.Rf4=) 21...Qh4–+ 22.h3 Bd4 23.Nd4 Qg3 24.hg4 Nd3 (24...Qd3?! 25.Qd3 Nd3 26.Nc6–+) 25.Rf3 Qh4 26.Kg1 Ne5 27.Rf4 Ng4 28.Nf3 (28.Qh3 Qh3 29.gh3 Ne5–+) 28...Qf2 29.Kh1 Ne3 (29...Qg3 30.Rd4–+) 30.Rg1 (30.Ra2 Qf1 31.Kh2 Rae8–+) 30...Nf5 31.Qa4 Ng3 (31...Ng3 32.Kh2 Ne2–+) 0–1. Eggink,Ryszard (1940) – Kowalewska,Agata (1635), II Turniej Szachowy Cztery Pory Roku Poland, 2011.

4.e3 Nf6 5.Be2 =.

4.e4 h6 5.d4 ed4 6.Bd4 f5?? (better is 6...Nc6=) 7.Qh5+– Kd7 8.Qf5 Kc6?? (8...Ke7 9.Qf4 Nc6+–) 9.b5 ab5 10.Bb5# (10.Qb5#) 1–0. Wall,Bill – Zzzzz, chess.com, 2009.

4.Nf3 Nf6 =+.

4.Nf3 Bg4 5.e4 Nf6 6.h3 Bh5 7.d4 Nc6 8.d5 Nb8 9.Qd3 Nbd7 10.Nfd2 h6 11.f3 Be7 12.Be2 Bg6 13.g3 Nh5 14.Rg1 0–0 15.Nc3 f5 16.ef5 Bf5 17.Nce4 Be4 18.fe4 Bg5?? 19.Bh5+– Nf6 20.Bg6 Nh7 21.Nf3 Qf6 22.Bf5 Qe7 23.Be6 Kh8 24.c4 Qf6 25.Rf1 Qe7 26.c5 Bf6 27.Kf2 Ng5 28.Ng5 Bg5 29.Kg2 c6 30.dc6 Qe6 31.cb7 Rab8 32.Rf8 Rf8 33.Rf1 Bf6 34.Qa6 Qa2 35.Rf2 Qb1 36.c6 Qe4 37.Kh2 Rb8 38.c7 (38…Qb7 39.Qb7 Rb7 40.c8Q Kh7 41.Qb7+–) 1–0. marre (1780) – sebo (1620), GameColony.com, 2003.

4.g3 Nf6=+ 5.c4 Be7 6.Bg2 0–0 7.d3 Ra7 8.Nd2 b6 9.Qc2 Nbd7 10.e3 Bb7=+ 11.Bb7 Rb7 12.Ne2 d5 13.Rc1 c5=+ 14.cd5 cb4 15.ab4 Bb4 16.Qc4? Bd2 17.Kd2–/+ Nc5 18.Be5= Nd5 19.Nf4 Nf4–/+ 20.Bf4? Nd3!–+ 21.Ke2? Nf4 22.Qf4–/+ Qd7 23.Rhd1 Qb5 24.Qc4 Qc4 25.Rc4 Rfb8 26.Rdc1 Kf8 27.Rc7 b5–+ 28.R1c6 Rc7 29.Rc7–/+ Rd8 30.Ra7 Rd6 31.Rb7 Ke8 32.e4 Rd7 33.Rb6 Ra7 34.Kd3 Kd7 35.Kd4 Kc8 36.f4 Ra8 37.Kc5 Kc7 38.e5 h5 39.h3 Kd7 40.Kb4 Ra7 41.g4 hg4–/+ 42.hg4 Rc7 43.Ra6+= Rc4 44.Kb5 Rf4 45.Kc5 Rg4 46.Kd5 g6 47.Ra7 Ke8 48.Ra8 Ke7 49.Rg8 Rg5 50.Rh8 Rh5 51.Ra8 (51.Rb8 f5=+) 0–1. Derrick_Yuile,Simon – Kamarudin,Nor Khairy, University Open, 2003.

4.Nc3 Nf6

5.e4 Nc6 6.Nf3 Be7 7.Be2 0–0 8.d4 ed4 9.Nd4 Bd7 10.0–0 Re8 11.Nc6 Bc6 12.Qd4 Bf8 Now all is on e4 13.Bd3 Ng4 (better is 13...g6!? 14.Nd5 Bd5 15.ed5 Bg7=) 14.Nd5+/– Ne5 15.Be2 Bd5 16.Qd5 c6 17.Qd4 Ng6 18.Rfe1 Qg5 19.g3 Rac8 20.c4 Nf4 21.Bf1 Ne6 22.Qd3 Be7 23.Rad1 Bf6 24.Bc1 Qh5 25.Be2 (25.Qd6 Rcd8 26.g4 Qg4 (26...Rd6 27.gh5 Nd4 28.Rd3+/–) 27.Qg3 Rd1 (27...Qd1?! 28.Rd1 Rd1 29.Be3–/+) 28.Qg4 Re1–+) 25...Qe5 26.f4 Qc3 27.e5 (27.Qd6?? Red8 28.c5 Bd4 29.Kg2 Rd6 30.cd6 Rd8–+) 27...Qd3 28.Bd3 (worse is 28.Rd3 de5 29.fe5 Be5+=) 28...de5 29.fe5 Be7 30.c5 a5 31.Bc4 Ra8 32.Bb3 Red8 33.Kg2 Rab8 34.Be3 Ra8 35.h4 ab4 36.ab4 Ra3 37.Rd8 Nd8 38.Rb1 Ne6 39.Kf3 Kf8 40.Ke4 Bd8 41.Bc1 Ra6 42.Bb2 b6 43.cb6 Rb6 44.Bc3 Be7 45.Bc4 h5 46.b5 cb5 47.Rb5 Rb5 48.Bb5 Bc5 49.Be1 Ke7 50.Kd5 Ba3 51.Bf1 f6 52.Be2 g6 53.Bd3 g5 54.ef6 Kf6 55.Bc3 Ke7 56.hg5 Ng5 57.Ke5 Bd6 ˝–˝. capablancaven (2130) – boki (2140), gameknot.com, 2012.

5.e4 Nc6 6.Nf3 g6 7.Be2 Bg7 8.0–0 0–0 9.Re1 Re8 10.d4 (better is 10.Bc4!?=) 10...ed4–/+ 11.Nd4 Nd4 12.Qd4 Bd7 (12...Ne4 13.Qc4–+) 13.Qd1 (better is 13.Bc4 Bc6 14.e5 Re5 15.Qd2–/+) 13...c5?? (better is 13...Ne4 14.Ne4 Bb2–+) 14.bc5 dc5 15.Bd3 Bc6 16.Bc1? b5 17.e5 Nd7 18.Bf4 Bb7 19.Qd2? c4 20.Be4–/+ Be4 21.Re4 Nc5 22.Qd8 Rad8–/+ 23.g3?? Ne4–+ 24.Ne4 Be5 25.Be5 Re5 26.Nf6 Kg7 27.f4 Re2 28.c3 Kf6 29.h4 Rdd2 30.Rb1 Rb2 31.Rd1 Rg2 32.Kf1 Rbf2 33.Ke1 Re2 34.Kf1 Ra2 35.Rd6 Kg7 36.h5 gh5 37.Rd5 Rg3 38.Rh5 Rc3 39.Rg5 Kf6 40.Rh5 Rc1# 0–1. pieeater – Gary_Seven, ChessWorld.net, 2009.

4.Nf3 Nc6

5.d4 e4 6.d5 Nce7 =.

5.d4 e4 6.d5 ef3 7.dc6 fg2 8.Bg2 b6 9.Nc3 Be7 10.Nd5 Be6? 11.Bg7+– Bd5 12.Bh8 Bg2 13.Rg1 Bc6? 14.Rg8 Bf8 15.Bg7 Qg5 16.Qd4 Qg7 17.Qg7 (17…Ke7 18.Qc3+–) 1–0. marre (1730) – sebo (1630), GameColony.com, 2003.

5.d4 Be6?? 6.d5+– Nd4 7.de6 Nf3 8.ef3 fe6 9.f4 ef4 10.Qh5 Kd7 11.Qh3 Nf6 12.Bc4 d5 13.Bb3 Qe7 14.c4 Rd8 15.cd5 Nd5 16.Bd5 Kc8 17.Be6 Kb8 18.0–0 Rd6 19.Re1 Qg5 20.Nc3 Be7 21.Ne4 Re6 22.Bg7! Re4 23.Re4 Qg7 24.Qc8?? Kc8–+ 25.Rae1 Re8 26.Rf4 Qc3 27.Rf3 Qe1# 0–1. marre (1945) – cityboy, GameColony.com, 2003.

3.a3 b6

4.Nc3 Bb7 5.e4 Nf6 6.Bd3 a6 7.Nge2 d5 8.ed5 Nd5 9.0–0 g6? 10.Nd5+– Bd5 11.Nf4! Qg5?? 12.Nd5 Bd6 13.f4! ef4 14.Bh8 Qd5 15.Re1 Kd7 16.Be4 Qe4 17.Re4 Nc6 18.Bf6 Ne7 19.Re7! Kc6 20.Qf3 Kb5 21.a4 Kb4 22.Qc3# 1–0. Whiterose – chestnut_1, ChessWorld.net, 2009.

4.e3 Nf6 5.d4 e4 6.d5 =.

4.e4 Bb7 5.d3 Nf6 6.Nd2 Nbd7 7.Ngf3 h6 8.c4 c5 9.b5 Nh7 10.Be2+= Be7 11.0–0 Ndf6 12.Ne1 Ng5 13.Ndf3 Nf3 14.Bf3 Nh7 15.Nc2 Ng5 16.Be2 Bc8? 17.f4+/– ef4 18.Rf4 Bf6 19.d4 Bb7 20.Bd3 0–0 21.e5+= de5 22.Rf2?? ed4 23.Qg4 Qd6 24.Raf1 Bd8 25.Qf5? Bc7 26.g3 Bc8 27.Qd5 Qd5 28.cd5 Nh3 29.Kg2 Nf2 30.Rf2 Be5 31.Ne1 Bb7 32.Be4 Rad8 33.Nd3 f6 34.Rf5 Bd5 35.Bd5 Rd5 36.Rf1 Rdd8 37.a4 Bc7 38.Nf2 Rfe8 39.Bc1 Re2 40.Kh3 Ra2 41.Ng4 Be5 42.Nf2 Ra4 43.Ne4 Ra1 44.Nd2 Ra5 45.Nf3 Rb5 46.Ne5 fe5 47.Rf5 e4 48.Kg4 e3 49.Re5 Rb3 50.Kf3 Kf7 51.Rf5 Kg6 52.Re5 Rf8 53.Ke4 Rc3 54.Be3 Re3 55.Kd5 Re5 56.Kc6 Rf6 57.Kb5 d3 58.h4 d2 (58...d2 59.Ka6 h5 60.Ka7 b5 61.Kb8 Rf7 62.g4 Re8#) 0–1. willow27 – Vass_1965, ChessWorld.net, 2005.

4.e4 g6 5.Nf3 Bg7 6.Nc3 Bb7 7.Nd5 Ne7 8.Bc4 c6 9.Ne7 Qe7 10.0–0 d5 11.ed5+/– cd5 12.Bb5 Bc6 13.Bc6+– Nc6 14.Re1 0–0 15.c4 e4? 16.Bg7+– Kg7 17.cd5 ef3 18.Re7 (18.Re7 Ne7 19.Qf3+–) 1–0. bambinik – dislokator, 2003.

4.e3 Bb7

5.Nf3 Nd7 6.c4 Be7 7.d4 Bf6 8.Nc3 ed4= 9.Nd4 Ne7 10.e4 0–0 11.Be2 Re8 12.0–0 Nc6 13.Nc6 Bc6 14.f3 Be5 15.Qe1 Qg5 16.Ra2 Qh6 17.g3 Nf6 18.Nd5 Nd5 19.cd5+= Bd7 20.Be5 Re5 21.Rc2 Rh5? 22.Qf2 Re5 23.Rc7 Bh3 24.Rfc1 Qd2 25.g4 h5 26.R7c2 Qf4 27.Rc8 Rc8 28.Rc8 Kh7 29.Rc2 Rg5+= 30.Qh4 Qe3=+ 31.Qf2 Qa3 32.b5 Qa1 33.Bf1 hg4 (33...hg4 34.f4 Rh5–/+) 0–1. Real Pons,J (2010) – Galceran Porqueras,J (1880), Tres Peons op, 1999.

5.Nf3 Nf6 6.c4 Nbd7 7.Nc3 Be7 8.Be2 0–0 9.0–0 Re8 10.d4 c6 11.Qb1 Bf8 12.de5 de5 13.Ng5 h6 14.Nge4 c5 15.b5 Ne4 16.Ne4 Qh4 17.Bf3 Kh8 18.Rd1 Rad8 19.g3 Qe7 20.Bg2 Nb8 21.Qc2 f5 22.Nc3 Bg2 23.Kg2 Qb7 24.Rd5 Rd5 25.Nd5 Bd6? (better is 25...e4!?+=) 26.Qf5+– Rf8 27.Qe6 Qf7 28.Qf7 (28.Qd6?! Qf2 29.Kh3 Qf5 30.Kg2 Qf2 31.Kh1 Qf3 32.Kg1 Qf2 33.Kh1 Qf3 34.Kg1 Qf2 35.Kh1=) 28...Rf7 29.Rd1 Nd7 30.Nc3 Bb8 31.Ne4 Kh7 32.Rd5 Nf6 33.Nf6 gf6 34.e4 Bc7 35.a4 Kg6 36.a5! Re7 37.a6 h5 38.h4 f5 39.ef5 Kf5 40.f4 Ke4 41.Be5 Be5 42.fe5 Re5 43.Re5 Ke5 44.Kf3 Kd4 45.g4 hg4 46.Kg4 Kc4 47.h5 Kb5 48.h6 Ka6 49.h7 Kb5 50.h8Q c4 51.Kf3 a5 52.Ke3 Kb4 53.Qf8 Ka4 54.Kd4 b5 55.Kc5 b4 56.Kc4 (56.Kc4 Ka3 57.Qf2 a4 58.Qe2 b3 59.Kc3 b2 60.Qb2; 56.Qf3 c3 57.Qd1 Ka3 58.Qa1 Kb3 59.Qb1 Ka3 60.Kc4 b3 61.Qb3) 1–0. Matveenko,Yury (2135) – Koshelev,Vladimir (1980), Voronezh Region–ch Seniors, 2008.

5.Nf3 Nf6 6.Bc4 =.

4.e4 Nf6

5.Nc3 Bb7 =.

5.Nc3 d5 6.ed5+/– Nd5 7.Bc4 (7.Qh5 Nc3 8.Qe5 Be6 9.Qc3 Qe7+/–) 7...Be6 8.Qf3 c6 9.Nd5 Bd5 10.Bd5 cd5 11.Be5 Qe7? (11...Nc6 12.Bb2+/–) 12.Qe3?? (12.Qd5 Qe6 13.Qe6 (13.Qa8? Qe5 14.Kd1 Qa1 15.Ke2 Bd6–+) 13...fe6 14.Nf3+–) 12...Nd7+/– 13.Bd4 Rc8 14.Qe7 Ke7 15.c3 f6 16.Ne2 Kf7 (16...Ke6 17.d3+/–) 17.0–0 (17.Nf4!?+–) 17...Bd6+/– 18.Ng3 Bg3 19.fg3 Rhe8 20.a4 a5 (20...Re2 21.Be3+=) 21.ba5+/– ba5 22.Rab1 Rb8 23.Kf2 h5 24.Rfe1 Rb1 25.Rb1 g5? (better is 25...Rb8!? 26.Rb8 Nb8+/–) 26.Rb5+– Ra8 (26...Ke6 27.Ra5 Ne5+–) 27.Rd5 Ke6 28.Rb5 Kf7 29.Rb7 Ke6 30.Ra7 Ra7 31.Ba7 Kd5 32.d3 Ne5 33.Ke2 f5 34.Bb6 Nc6 35.Ke3 Kd6 36.d4 Kd5 37.Kd3 Kd6 38.Kc4 Kd7 39.Kb5 Kd6 40.Ba5 Kd5 41.c4 Kd4 42.Kc6 Ke3 43.Bb6 Ke2 44.Kd5 f4 45.gf4 gf4 46.a5 f3 47.gf3 Kf3 48.a6 Kg2 49.Bc7 Kh1 50.Kd4 h4 51.Ke3 h3 52.a7 Kg1 53.a8Q Kf1 54.Qf3 Kg1 55.Qf2 Kh1 56.Qf1# 1–0. Romero,Ricardo (2265) – Salazar,Rigel, Yucatan–ch op, 1994. (=1.a3 e5 2.b4 b6 3.Bb2 d6)

5.Nc3 Be7!? =.

5.d3 Be7 6.Nf3 Bg4 7.Be2 h6 8.0–0 0–0 9.Re1 c6 10.Nh4 Be2 11.Qe2+= Nfd7 12.Nd2?? Bh4–+ 13.Nf3 Be7 14.c4 a6 15.Bc1 g5 16.d4 f6 17.d5 c5 18.bc5 Nc5 19.g3 Nbd7 20.Kg2 Rf7 21.Bb2 Qc7 22.h3 f5 23.ef5 Rf5 24.g4 Rff8 25.Rab1 a5 26.Qe3 e4 27.Nd4 Bf6 28.Nb5 Qd8 29.Nd6 Be5 30.Be5? Ne5–+ 31.Nf5 Kh7 32.Rb6?? Qb6 33.Kg3 Rae8 34.h4 Nc4 35.Qd4 Ne5 36.d6 Rf7 37.hg5 Qb3 38.Kg2 Qf3 39.Kg1 Qg4 40.Ng3 Nf3 41.Kh1 (41.Kh1 Qh3#) 0–1. pieeater – MissLayla, ChessWorld.net, 2010.

4.Nf3 Bb7

5.e3 Be7 6.Be2 Nf6 7.c4 0–0 8.0–0 c6 9.d3 Nbd7 10.Nbd2 Re8 11.e4 Qc7 12.Qb3 d5 13.cd5 cd5 14.Rac1 Qd6 15.Rc2 de4 (15...a5 16.ba5 Ra5 17.Ne5 Ne5 18.d4+=) 16.de4= Ne4 17.Ne4 Be4 18.Rd1 (18.Rd2 Qc6 19.Rc1 Qb7+/–) 18...Qg6 (18...Bc2 19.Qc2 Qe6 20.Bc4=) 19.Rcd2 Bf5?? (19...Nf8 20.Bd3=) 20.Ne5?? (better is 20.Rd7 Bd7 21.Rd7+–) 20...Ne5+= 21.Be5 Be4 (21...Bb4!? 22.Qb4 Re5 23.Rd8 Re8 24.Ra8 Ra8=) 22.Bg3 Bh4 23.Bf3 Bg3 24.hg3 Bf3 25.Qf3 Qg5 26.Rd7 Rad8?? (better is 26...f5+=) 27.Qf7+– Kh8 28.Rd8 (28.Rd8 Rd8 29.Re1+–) 1–0. Fournier,Frederic (1945) – ManuelMancilla (1835), Active (1/3), 2004.

5.e3 Nf6 6.Be2 Be7 7.0–0 Nbd7 8.c4 a5 9.d3 ab4 10.ab4 Ra1 11.Ba1 0–0 12.Nbd2 c5 13.b5 d5 (13...Qc7 14.Nh4=) 14.Bc3 (better is 14.Ne5 Bd6 15.d4+/–) 14...d4+= 15.ed4 ed4 16.Bb2 h6 17.Re1 Bd6 18.h3 Ne5 19.Ne5 Be5 20.Nf3 Bf3 (20...Bd6!?+=) 21.Bf3= Re8 22.Kf1 Nh7 23.Be4 Ng5 24.Qa4 (24.Bc6 Re6+=) 24...Bc7 25.Qa7 Ne4 26.Re4 Re4 27.de4 Be5 28.Qa1 Qh4 29.f3 Qf4 30.Qc1? (better is 30.Qa6+=) 30...Qh2–+ 31.Qd2 (31.Qa1 Bf6 32.Qa8 Kh7 33.Qd5 Qh1 34.Kf2 Bh4 35.g3 Qh2 36.Ke1 Qg3 37.Kd2 Qh3 38.Qf7–+) 31...Bf4 32.Qf2 Be3 33.Qc2 Qh1 34.Ke2 Qg2 35.Kd3 Qf3 36.Qe2 Qh3 0–1. Fournier,Frederic (1985) – surviver (1835), Active (5/0), 2004.

3.a3 Nc6

4.b5 Nce7 5.Nf3 Nf6 6.Nc3 Ned5 7.g3 Nc3=+ 8.dc3 Be7 9.c4 0–0 10.Ng5 h6 11.a4?? hg5–+ 12.Ra3 d5 13.Rf3 Bg4 14.Re3 Bc5 15.Re5 Nh7 16.Rd5 Qe7 0–1. evandebrake – calculus, net–chess.com, 2001.

4.Nc3 Nf6 5.e4 a6 6.b5 ab5 7.Bb5 Bd7 8.Bc4 Na5 9.Ba2 c5 10.Nd5 Ne4 11.Qf3 Nf6 12.Nf6 Qf6 13.Qf6 gf6 14.Nf3 Bc6 15.Nh4 b5 16.d3 Rb8 17.0–0 Rg8 18.g3 b4 19.Bb1 b3 20.c4 Kd7 21.f4 ef4 (better is 21...Ke6!?–+) 22.Rf4+= Bh6 (better is 22...Ke8!?+=) 23.Rf6+= Rbf8?? (better is 23...Be3 24.Kf1 Rgf8+=) 24.Rh6+– Re8 25.Kf2 (25.Rh7 Re1 26.Kf2 Rge8 27.Rf7 Kc8=) 25...Re7 26.d4 Nc4 27.Bf5 Kc7 28.Rb1 Rge8+/– 29.Bd3 Ne3 30.h3 c4 31.Bh7 Nd1 32.Rd1+– Re2 33.Kg1 Rb2 34.Rf6 c3 35.Rf7 Kb6 36.Rf6 Be4?? 37.Be4+– Re4 38.Rf2?? Rf2–+ 39.Kf2 c2 40.Rd3 c1Q 41.Rb3 Ka6 42.Nf3 Qc2 43.Kf1 Qb3 44.Nd2 Qd3 45.Kg2 Re2 46.Kh1 Qd2 47.d5 Qe1# 0–1. Workman,K – Stanulis,T, East Lansing–ch MI op–B, 1991. (=1.a3 e5 2.b4 Nc6 3.Bb2 d6)

4.c4 a6 5.e3 Nf6 6.Nf3 Be7 7.Be2 0–0 8.0–0 h6 9.d3 Bg4 10.Nbd2 Bf3 (10...Qd7 11.h3 Bf5 12.e4=) 11.Nf3 (11.gf3?! Qd7=) 11...e4 12.de4 Ne4 13.Bd3 Ng5 14.Ng5 Bg5 15.Qg4 Ne5 (15...Re8+/–) 16.Qe2 (better is 16.Be5 de5 17.Rad1+–) 16...Nd3+= 17.Qd3 c6 (better is 17...Bf6!? 18.Bd4 Re8+=) 18.Rad1 d5 19.cd5 cd5 20.Qd5 Qd5 21.Rd5 Rad8 22.Rfd1 Rd5 23.Rd5 Rd8 24.Rd8 Bd8 25.f3 Bf6? (better is 25...b5+/–) 26.Bf6+– gf6 27.e4 Kg7 28.Kf2 Kg6 29.Ke3 Kg5 30.g3 h5 31.h4 Kg6 32.Kd4 f5 33.e5 f6 34.e6 Kg7 35.Kd5 Kf8 36.Kd6 Ke8 37.a4 b5 38.ab5 ab5 39.f4 Kd8 40.e7 Ke8 41.Ke6 ˝–˝. Fournier,Frederic (1830) – robocop1 (1755), Active (3/0), 2005.

4.c4 b6 5.Nf3 h6 6.e4 Nf6 7.Bd3 Bg4 8.h3 Bh5 9.g4 Bg6 10.Nc3 Be7 11.0–0 Qd7 12.Nh4 0–0–0 13.Nf5 Bh7 14.Qf3 g6 15.Ne7 Ne7?? 16.Nb5 Ne8 17.a4 Kb8 18.a5 a6 19.Nc3 Nc6 20.ab6 Nd4 21.Qd1 h5? 22.Ra6 hg4 23.hg4 Qg4 24.Qg4 f5 25.ef5 gf5 26.bc7 Nc7 27.Rb6 Kc8 28.Qh3 Bg6 29.Qg2 Rdg8 30.Ra1 Bf7 31.Bf5 Nf5 32.Nd5 Rg2 33.Kg2 Rg8 34.Kf1 Nd5 35.cd5 Bh5?? 36.Ra8 Kc7 37.Rg8 Kb6 38.Rg5 Nh4 39.Rh5 (39...Nf3 40.Ke2 Ng1 41.Ke3+–) 1–0. Aliethah – mikkel, Live Game Caissa's Web, 2004.

4.c4 Be6 5.d3 a6 6.Nf3= Nf6 7.e3 b5 8.cb5+/– ab5 9.d4 ed4 10.Nd4 Nd4= 11.Bd4 c5? 12.Bb2 cb4 13.ab4 Ra1 14.Ba1 Qa8? 15.Nc3 Qc6?? 16.Nb5 Be7 17.Na7 Qa4?? 18.Qa4+– (18.Qa4 Kf8 19.Nc6+–) 1–0. Nautiluschess – Pulle, ICS blitz, 2001.

4.c4 Bf5 5.Nc3 Qf6 6.e4= Bg6 7.Nd5 Qd8 8.d3 Nce7 9.Ne3 c6 10.Be2 Nf6 11.Nf3+= Ne4? 12.de4+– Be4 13.0–0 Bf3 14.Bf3 Ng6 15.Re1 Qg5 16.b5 Nh4 17.bc6 Rb8 18.c7 Rc8 19.Qa4 Ke7 20.Nd5 Ke6 21.Be4 f5 22.Bc1 Qg6 23.Nf4! ef4 24.Bb7 (24.Bb7 Kf6 25.Bb2 Kg5 26.Bc8+–) 1–0. Sammy8 (1800) – BucFus, internet, 2005.

4.e3 Nge7 5.Nf3 Bf5 6.Be2 f6 7.d3 d5 8.c4 dc4 9.dc4 Qd1 10.Bd1 0–0–0 11.0–0 Bd3 12.Nc3 e4 13.Re1 ef3 14.Bf3 Ne5 15.Nb5 Nf3 16.gf3 Bc4 17.Nd4 Bf7 18.Rac1 Rd5 19.e4 Rg5 20.Kf1 Rh5 21.Ke2 Rh2 22.Ke3 h5 23.Nb5 Nc6 24.Na7 Na7 25.Bd4 Nb5 26.Bc5 Na3 27.Bf8 Rf8 28.Ra1 Nc2 29.Kd2 Rf2 30.Kd3 Rd8 31.Kc3 Na1 32.Ra1 Rf3 33.Kc2 Bb3 34.Kb2 Rd2 35.Kc1 Rd1 36.Kb2–+ Rf2 37.Ka3 Ra1 38.Kb3 h4 39.Kc4 h3 40.Kd5 Rd1 41.Ke6 h2 42.Kf7 Rd7 43.Kg6 h1Q (44.e5 Qh6#) 0–1. TD_6 – Oort, ICS rated light match, 1998.

4.e3 Qg5 5.Nf3 Bg4?? 6.Ng5+– Bd1 7.Kd1 Nh6 8.Nc3 f6 9.Ne6 Kd7 10.Nf8 Rhf8 11.Bb5 a6 12.Ba4 b5 13.Bb3 Ng4 14.Ke2 f5 15.h3 e4 16.hg4 fg4 17.Rh7 Rae8 18.Rg7 Re7 19.Rg4 a5 20.Nb5 Ne5 21.Re4 ab4 22.ab4 Rg7 23.Nc7 Kc7 24.Ra7 Kd8 25.Rg7 Nc6 26.Rc4 Ne7 27.f4 Nf5 28.Ra7 Ng3 29.Kf3 Nf5 30.Ra8 Ke7 31.Rf8 Kf8+– 32.Rc7 Nh4 33.Kg4 Ng6 34.b5 d5 35.Ba3 Kg8 36.Bd5 (36.Bd5 Kh8 37.Bb2 Ne5 38.Be5) 1–0. boa – MC Q, ChessWorld.net, 2004.

4.e4 a6 5.Nf3 b5 6.c4+= Bg4 7.cb5+– Bf3 8.Qf3 ab5 9.Bb5 Qd7 10.0–0 Rb8 11.Bc4 Nd4 12.Bd4 ed4 13.Rc1 c5 14.bc5 dc5 15.a4 Nf6? 16.e5 Ng8 17.Bb5 Rb5 18.ab5 Qb5 19.Ra8 Ke7 20.Ra7 Ke6 21.Qf7 Ke5 22.Re1 Kd6 23.Qe6# 1–0. Wall,Bill – TinSoldier, Internet, 2002.

4.e4 Be6 5.Nf3 Nf6 6.d3 d5 7.Ne5 Ne5= 8.Be5 Bd6 9.Bf6 Qf6=+ 10.Nd2 Be5 11.Rb1 0–0 12.Qf3= de4 13.Ne4 Qf3–/+ 14.gf3 b6 15.c3= Bd5 16.d4 Bf4 17.Bd3 Be4? 18.fe4+– Rfe8 19.Kd1 a5 20.Kc2 ab4+/– 21.ab4 Ra2 22.Rb2 Rea8 23.Bc4 Rb2 24.Kb2 Re8 25.f3 c6 26.h3 b5+/– 27.Bd3 g6 28.Ra1+– h5 29.e5 Kg7 30.Ra6 Rc8 31.Be4 g5 32.Rc6 Rb8 33.Bd5 Rd8 34.Rc5 Rb8 35.Bc6 f6 36.e6 Kf8 37.d5 h4 38.Bb5 Be3 39.d6 Bc5+/– 40.e7 Kg7 41.e8Q Re8 42.Be8 Bd6 43.Kb3 Kf8 44.Bc6 Ke7 45.c4 f5 46.c5 g4 47.fg4 fg4 48.cd6 Kd6 49.Bg2 g3 50.Kc4 Kc7 51.Kc5 Kd7 52.Kb6 Ke6 53.Kc6 Kf5 54.b5 Kf4 55.b6 Ke3 56.b7 Kf2 57.Bd5 g2 58.Bg2! Kg2 59.b8Q Kh3 60.Kd5 Kg2 61.Ke4 h3 62.Ke3 h2 63.Qb2 Kh3 64.Qc1 Kg3 65.Qh1 Kh3 66.Kf4 Kh4 67.Qh2# 1–0. janbs – color1972, ChessWorld.net, 2004.

4.e4 f5 5.ef5 Bf5 6.Nf3 Nf6 7.Be2 Be7 8.Nh4 Bg6 9.Ng6= hg6 10.d3 Qd7 11.Nc3 0–0–0 12.Ne4 Kb8 13.Ng5 Rdf8 14.Nf3 Nd5 15.c4 Nf6?? 16.b5 Nd8 17.a4 Nf7 18.a5+= c6 19.bc6+/– Qc6 20.0–0 a6 21.h3 Nh5 22.Nh2 Nf4 23.Bf3 Qc7 24.Bc3 Ng5–/+ 25.Rb1?? Nf3 26.Nf3 Qc6 27.Rb6 Qd7–+ 28.Re1 Nh3! 29.Kf1 Nf4 30.Re4 Ng2 31.Qb3 Rf3 32.Ra6 Nf4 33.Rf4 Rf4 34.Rb6 Rh1 35.Ke2 Qg4 36.Kd2 Rf2 (36...Rf2 37.Ke3 Re2#) 0–1. mic (2100) – stormer (2145), net–chess.com, 2007.

4.Nf3 Nf6 5.e3 Be7 6.d4 Bf5 7.de5 Ne5 8.Nbd2 Nf3 9.Qf3 d5?? 10.Bb5 c6 11.Ba4 Bg6 12.0–0 0–0 13.Rfe1 Re8 14.Bb3 Qd6 15.c4 dc4 16.Nc4 Qd5 17.e4 Qg5 18.e5+= Be4?? 19.Re4 Ne4 20.Qe4 Qh4? 21.Bc2 Qe4 22.Be4 Bg5 23.Nd6 Re6 24.Re1 Be7 25.Nf5 g6 26.Nh6 Kg7 27.Ng4 h5 28.Nf6 Bf6 29.ef6 Rf6? 30.Bf6 Kf6 31.a4 Re8 32.b5 cb5 33.ab5 b6 34.Bc6?? Re1# 0–1. orangotango – Esders, 2003.

4.g3 g6 5.Bg2 Nce7 6.Nf3 Nf6 7.d3 Bg7 8.Nbd2 0–0 9.e4 c6 10.0–0 Bg4 11.h3 Bd7 12.Nc4 Ne8 13.Kh2 Be6 14.Ne3 d5 15.Be5 de4 16.Bg7 ef3 17.Bf8 fg2 18.Be7? gf1Q–+ 19.Nf1 Qe7 20.Ne3 Nd6 21.f4 Nf5 22.Ng2 b5 23.Qd2 Nd4 24.Ne1 Bd5 25.c3 Qe1! 26.Qe1 Nf3 (26...Nf3 27.Kg2 Ne1 28.Kf2 Nd3 29.Ke3 Nb2–+) 0–1. mic (2250) – pblanctranchant (2310), net–chess.com, 2006.

4.b5 Na5

5.e3 a6 6.c4 (6.d4 ab5 7.Bb5 Bd7 8.Bd7 Qd7 9.de5 Qb5=) 6...ab5+= 7.cb5 c6 (7...Be6 8.Nc3+=) 8.bc6 Nc6 9.Nc3 Nf6 10.Nf3 Bg4 11.Be2 Be7 12.Nd4? (better is 12.0–0=) 12...ed4–+ 13.Bg4 dc3 14.Bc3 Ng4 15.Qg4 Bf6 16.d4 0–0 17.0–0 Rc8 18.Rfc1 Ne7 19.h4 Ng6 20.h5 Nh4?? (20...Ne7 21.h6–+) 21.h6?? (better is 21.g3=) 21...g6–+ 22.g3 Nf5 23.e4 Nh6 24.Qh3 Bg7 25.e5? de5 26.d5 Qd5 27.Rd1 Qc6 28.Be5 Be5 29.Qh6 Rfd8 30.Re1 Bg3! 31.fg3 Qc5 32.Kf1 Qf5 33.Kg1 Rd2 34.Qd2+– Qc5 35.Qf2 Qc7 36.Rac1! (36.Rac1 Qc1 37.Rc1 Rc1 38.Kh2+–) 1–0. Fournier,Frederic (1630) – osho, KasparovChess.com rated blitz game, 2002.

5.e3 Be7 6.c4 Nf6 7.Nc3 0–0 8.d3 Bg4 (8...a6 9.Nf3+=) 9.Be2= Be2 10.Nge2 Ng4 11.0–0 d5? (11...a6 12.Ng3 Qd7 13.b6 cb6 14.Nd5=) 12.h3 (12.Nd5!? Bd6 13.Ng3+–) 12...Nf6+= 13.Qa4 b6 14.cd5 Nd5 15.Nd5 (better is 15.Qe4!? Nc3 16.Bc3+/–) 15...Qd5= 16.Nc3 Qd3 17.Rfd1 Qf5 18.Ne2 (better is 18.Nd5 Bd6 19.Bc3=) 18...Bh4?? (better is 18...a6+=) 19.Qh4+– Nc4?? (better is 19...Qc2 20.Be5 Qe2+–) 20.Qc4 c5 21.bc6 Rac8 22.Rac1 Qe6 23.Qe6 fe6 24.Be5 Rf2 25.Kf2 Rf8 26.Kg1 g6 27.Rd7 Rc8 28.c7 (28.c7 h5 29.Rg7 Kf8 30.Rf1 Ke8 31.Bd6 Rc7 32.Rf8; 28.Rg7 Kf8 29.Rf1 Ke8 30.Bd6 Rc6 31.Rf8) 1–0. Fournier,Frederic (2055) – jarman52 (1665), Echecs21, 2003.

4.e3 a6

5.Nc3 Nf6 6.Nf3 Be7 7.Bc4 b5 8.Bd5 Nd5 9.Nd5 Be6 10.e4 Bd5 11.ed5+= Nb8 12.0–0 0–0 13.Qe2 c6 14.dc6 Nc6 15.Qe4 Rc8 16.d4 Bf6 17.de5= Ne5 18.Ne5 Be5 19.Rad1?? Qe7 20.Be5= Qe5 21.Qd3 Rfd8 22.Rfe1 Qc3 23.Qd5?? Qc2=+ 24.Re7 Rc7?? 25.Qf7 Kh8 26.Qg7# 1–0. Nautiluschess – Mae, internet, 2001.

5.c4 Bf5 6.Nc3 Nf6 7.d3 Be7 8.Be2 0–0 9.Nf3 d5?? (better is 9...Re8=) 10.cd5+– Nd5 11.Nd5 Qd5 12.e4 Qb5 (better is 12...Be4 13.de4 Qe4+–) 13.ef5 Rad8 14.Qc2 Rfe8 (14...Qd5 15.Qc4+–) 15.d4 Qd5 (15...Bb4 16.Kf1 (16.ab4?! ed4 17.Kf1 d3 18.Bd3 Rd3+=) 16...Qb6 17.ab4 Nb4 18.Qc5 Qc5 19.dc5+–) 16.Bc4 (16.de5!? Qd7+–) 16...Qd7 17.de5 Bf6 18.0–0 Ne5 19.Ne5 Be5 20.Rad1 Qe7 21.Rd8 Rd8 22.Re1 Bh2 23.Kf1 Qh4 24.Qe4 Qe4 25.Re4 b5 26.Bb3 Kf8 (26...Bd6 27.Rg4 Bf8 28.Bg7+–) 27.g3 Rd3 28.Ba2 Rd2 (28...Rd1 29.Ke2 Rd6 30.Bd4+–) 29.Re2 Rd1 30.Kg2 Bg1 31.Bc3 Rc1 (31...h6 32.f6 gf6 33.Rd2 Rd2 34.Bd2 Bf2 35.Bh6 Ke7 36.Kf2+–) 32.Be1 1–0. Fournier,Frederic – Escriche Jean_Marc, Partie Libre (rapide), 1993.

5.g3 Nf6 6.d4 Bg4 7.Be2 Bf5 8.de5 de5=+ 9.Nc3 Bd6 10.Nf3 h6 11.0–0 Bh3 12.Re1= Ng4 13.b5 ab5= 14.Bb5 0–0 15.Qe2 Na5 16.Red1 Qe7 17.Nd5 Qe6=+ 18.e4 c6–+ 19.Nb6 Rad8 20.Bd3?? Bc5–+ 21.Nc4 Bf2 22.Kh1 Nc4 23.Bc4 Qf6 24.a4?? b5 25.ab5? cb5 26.Bb5?? Rb8 27.Ba3 Rfc8 28.Bd7? Rc2!!–+ 29.Nd2 Ne3 30.Bh3= Nd1 31.Qd1 Rc3 32.Nb1?? Rd8?? 33.Qe2?? Rc2!! 34.Qf1 Qf3 35.Bg2 Qd1 36.h4? Qg4 37.Nc3 Qg3 38.Ne2 Qh4 39.Bh3 Re2! 40.Kh2 Bg3 41.Kg1 Rdd2 42.Bc5 Bh2 43.Kh1 Qe4 44.Bg2 Rg2 45.Qf7 Kf7 46.Ra7 Kg8 47.Ra1 (47.Ra8 Qa8 48.Be3 Rgf2#) 0–1. willi_weizenkeim – pytolo98, playchess.de, 2002.

4.e3 Be6

5.Bb5 =+.

5.Nf3 f6 6.Be2 g5 7.c4 Bg7 8.h3 Nge7 9.0–0 0–0 10.Nc3 Ng6 11.d4 ed4 12.Nd4 Qd7 (12...Nd4!? 13.ed4 Re8+=) 13.Ne6+/– Qe6 14.Qd5 Qd5 15.Nd5 Nce5? (better is 15...Rac8!?+/–) 16.Nc7 Rac8 17.Ne6 Rfe8 18.Ng7 Kg7 19.Rfc1 Nh4 20.Be5 de5 21.c5 Rcd8 22.Rd1 Ng6 23.Rd8 Rd8 24.Rd1 Rd1 25.Bd1 Ne7 26.Bf3 b6 27.c6 Kf8? 28.c7 Nc8 29.Bb7 Nd6 30.c8Q Nc8 31.Bc8 Ke7 32.Bf5 h6 33.e4 Kd6 34.f3 a5 35.Kf2 ab4 36.ab4 h5 37.Ke2 h4 38.Kd3 Kc6 39.Kc4 Kd6 40.b5 Ke7 41.Kd5 Kf7 42.Kc6 Ke7 43.Kb6 Kd8 44.Kb7 Ke7+– 45.b6 Kd8 46.Kb8 Ke7 47.Kc7 Ke8 48.b7 Ke7 49.b8Q Kf7 50.Kd7 Kg7 51.Ke7 Kh6 52.Qh8 1–0. Fournier,Frederic (1865) – ratasara (1770), Active (3/0), 2005.

4.e3 Bf5

5.c4 Be7 6.d4 ed4 7.b5 Na5 8.Bd4 f6 9.Nf3+= Qd7 10.Nbd2 c5 11.Bc3+/– b6 12.Be2 Nh6+= 13.Ba5 ba5 +=. amador – carlosfalcao (1805), net–chess.com, 2007.

5.Nf3 Bg6 6.Be2 f6 7.c4 Nh6 8.0–0 Be7 9.Nc3 Nf7 10.d3 0–0 11.e4 (11.Nh4 Nh8+/–) 11...a5 (11...f5 12.b5 Nb8 13.ef5 Bf5 14.d4=) 12.Qb3 (12.b5!? Nb8 13.Nh4+/–) 12...ab4 13.ab4 Qd7 14.Ra8 Ra8 15.Ra1 Qc8 (better is 15...Ra1!? 16.Ba1 f5=) 16.Ra8+/– Qa8 17.Qa3 (17.Nd5!? Bd8 18.Nh4+/–) 17...Qa3+= 18.Ba3 b6 (18...f5!?+=) 19.b5+/– Nd4 (19...d5!? 20.Be7 Ne7 21.Nd5 Nd5 22.ed5 Bh5+/–) 20.Nd4+– ed4 21.Nd5 Bd8 22.Bb2 c5?? (better is 22...f5 23.f3 fe4 24.fe4 Ng5 25.Bd4 Bf7+–) 23.bc6 Ne5 24.c7 Bc7 25.Nc7 h5 26.Bd4 Bh7 27.Bb6 g5 28.Nd5 Kf7 29.Bc7 Ke6 30.Bh5 Nd3 31.Bg4 f5 32.ef5 Bf5 33.Bf5 Kf5 34.Bd6 g4 35.c5 Ne1 36.Ne3 Ke4 37.Ng4 (37.Ng4 Kd5 38.h4+–) 1–0. Fournier,Frederic (1955) – skep, (60+2) Owl21.com, 2009.

5.g4 Bg6 6.Nc3 Nf6 7.g5 Nd7 8.Nd5?? Be7?? 9.d4? ed4 10.ed4 0–0 11.Qd2?? f6 12.gf6 Bf6 13.0–0–0 Nb6 14.Nb6 ab6 15.h4 Be4 16.f3 Bf5 17.Bd3 Bh4 18.d5 Bg5?? 19.f4+= Bh6? 20.dc6 Bd3 21.Rh6! gh6 22.Qd3 bc6 23.Qg3 Kf7 24.Qg7 Ke6 25.Re1 Kf5 26.Qh7 (26.Qh7 Kg4 27.Qg6 Qg5 28.fg5+–) 1–0. crazy 8 – BIGAL 1971 (year?).

4.e4 Nf6

5.Nc3 Be6 6.Bb5 Be7 7.Bc6 bc6 8.Nf3 Ng4 9.0–0 d5 10.ed5 cd5+= 11.Qe2 Bd6 12.d4?? 0–0?? 13.de5+– Be5?? (better is 13...Be7 14.Nd4 Nh6+–) 1–0. guest2 – guest5, ICC, 1999.

5.Nc3 Be7 6.Bb5 0–0 7.Nf3 Bg4 8.h3 (8.h3 Bf3 9.Qf3=+). jbumgar (1675) – ajeffries (2075), net–chess.com, 2009.

5.d3 a5 6.b5 Nd4 7.Bd4 ed4 8.Nf3 =.

5.d3 Be7 6.h3 Bd7 7.Nf3 a6 8.c4 Na7 (8...0–0 9.Be2=) 9.Nc3 c5 (9...0–0!?=) 10.bc5+= dc5 11.Nd5 (better is 11.Ne5!? 0–0 12.Nd7 Nd7 13.Nd5+/–) 11...Nd5= 12.ed5 (12.cd5 f6=) 12...f6+= 13.Be2 0–0 14.Qc2 b5 15.0–0 Bd6 16.Rfe1 a5 17.Nd2 b4 18.Ne4 Qe7 (18...Qb6 19.ab4 ab4 20.Nd6 Qd6 21.Ra5=) 19.Bf3 (19.ab4 ab4 20.Ra6+/– (20.Nd6?! Qd6 21.Ra5 Rfb8=)) 19...Nc8? (better is 19...Rfb8=) 20.ab4+– (20.Nd6?! Nd6 (20...Qd6? 21.ab4 cb4 22.c5+–) 21.d4 Bf5=) 20...cb4 21.c5 Bb8 22.d6 Qf7 23.Nf6! Qf6 24.Be5 Qh6 25.Ba8 Na7 26.Ra5 Bc6 27.Ra7! Bg2 28.Rg7 Qg7 29.Bg7 Ba8 30.Bf8 Kf8 31.Qa4 (31.Qa4 Be4 32.Re4 Kf7 33.Qd7 Kg6 34.Qg4 Kf7 35.Rf4 Ke8 36.Qc8#; 31.Qb2 Kf7 32.Re7 Kg6 33.Qg7 Kf5 34.Re5 Kf4 35.Qf6#) 1–0. Gil Clariana,Jordi (1825) – Andres Sebastian,Luis, 12th Miquel Mas Open, 2011.

5.d3 Bg4 6.Nf3 Nd4 7.Nbd2 Nf3 8.Nf3 Bf3 9.Qf3+= g5 10.h3 Bh6 11.g4 Nd7 12.d4 Bg7 13.Rd1 Nb6 14.de5+/– Na4?? 15.Bb5+– Ke7 16.Ba4 Qg8 17.ed6 cd6 18.e5! de5 19.Rd7 Ke6 20.Qf5# 1–0. Becker,Andreas – Bachmann,Joerg, Baden–ch AT2, 2003.

5.Nf3 Ne4 6.c3 Bf5 7.d3 Ng5 8.Bc1 Bg4 9.h3? Bf3 10.gf3–/+ Qf6 11.Bg2 0–0–0 12.h4 Ne6 13.Bh3 Kb8 14.b5 Na5 15.Nd2 c6 16.Nc4 Nc4–+ 17.dc4 cb5 18.cb5 b6 19.Qd5 Nf4 20.Qc6 Qh4 21.Qe4 f6 22.a4?? d5 23.Qf5 g6 24.Qg4 Qg4 25.Bg4 Nd3 26.Kd2 Nf2 27.Rg1 e4 28.Be6 ef3 29.Rf1 Ne4 30.Kd3 Nc5 31.Kd4 Ne6 32.Kd3 Nc5 33.Kd4 Nb3 34.Ke3 Na1 35.Kf3 Bc5 36.Bb2 Nb3 37.Ke2 Rde8 38.Kd1 Re3 39.Kc2 Na5 40.Kd2 f5 41.Re1 Rhe8 42.Re3 Be3 43.Kd3 d4 44.cd4 h5 45.Ba3 Bh6 46.d5 Re3 47.Kd4 Bf4 48.d6 Ra3 49.Kd5 Rd3 (49...Rd3 50.Ke6 Rd6 51.Kf7 g5–+) 0–1. Gregor123 – Geist@, mySchach.de, 2004.

4.Nf3 Bg4

5.d4 ed4 6.Nd4 Nd4 7.Bd4 Nf6 8.f3 Be6 9.e4 Be7 10.Bd3 0–0 11.0–0 d5 12.ed5 Qd5 13.Bf6 Bf6–/+ 14.c3 Rad8 15.Be2 Qd1 16.Rd1–/+ Rd1 17.Bd1 Bc4 18.Nd2 Bc3 19.Rc1 Bd2 20.Rc4 Bc1?? 21.Rc7?? Ba3+= 22.Rb7 Ra8 23.h3 Bb2 24.Kh2 Be5+= 25.g3 f6 26.f4 Bd4 27.Bf3 Bb6?? 28.b5 Rd8+= 29.Re7 g6 30.Bc6 Rd2 31.Bg2 Rd8 32.g4 f5 33.gf5+/– gf5 34.Re5 Bc7 35.Rf5 Rf8 36.Bd5 Kh8?? 37.Rg5 Bf4–+ 38.Kg2 Bg5 39.Kg3 Be7 40.Kg4 Rf2 41.h4 Rb2 42.Bc6 Rg2 43.Kf3?? Rh2–+ 44.Kg4 Rh4 45.Kg3 Rb4 (45...Rb4 46.Kg2 h5–+) 0–1. Nautiluschess – Mexa, ICS blitz, 2001.

5.h3 Bf3 6.ef3 Nf6 7.Bc4 a6 8.0–0 Be7 9.Re1 0–0 10.d3 d5 11.Bb3 d4 12.Nd2 Nh5 13.c3 (13.c4 Qd6 14.g3 Qg6=) 13...Nf4+= 14.Ne4 Bd6 (14...dc3 15.Bc3 Nd4 16.Ng3+=) 15.cd4 (worse is 15.Nd6 Qd6 16.Bc1 dc3 17.Bf4 ef4–/+) 15...ed4 16.Qc2 Ne5 Attacks the isolani on d3 17.Rac1?? (better is 17.Rad1=) 17...Ned3–+ (17...Nfd3?! 18.Bd4 Nc1 19.Rc1–/+) 18.Rcd1 Ne1 19.Re1 d3?? 20.Qd2 Qh4 21.Nd6?? cd6 22.Re4+= g5?? 23.Bd4 Ne2 24.Kf1 Qh6 25.Bb2 (25.Bb2 d5 26.Bd5+/–) 1–0. Fournier,Frederic (1720) – pascos (1645), Active (2/0), 2004.

4.g3 Nf6

5.Bg2 Bd7 6.Nf3 e4=+ 7.Nd4 Be7 8.0–0 d5 9.e3 0–0 10.d3 a5= 11.c3 ab4 12.Nc6=+ Bc6 13.cb4 Bb5 14.Re1 Bd3 15.Nd2 Qd7 16.Nb3 b6 17.Rc1 Rfd8 18.Qd2 Bc4 19.Na1 c5 20.Red1 Qe6 21.Nc2 Nd7 22.Ra1 Ne5 23.Be5 Qe5 24.Bf1 Bb3 25.Rdc1 d4 26.Ne1 d3 (26...d3 27.bc5 Bc5–+) 0–1. Old Sisyphus – chem1st, ChessWorld.net, 2005.

5.Bg2 Be6 6.e3 Be7 7.Ne2 0–0 8.0–0 Qc8 9.d4 e4 10.Nd2 d5 11.Nf4 Bg4 12.f3 ef3 13.Bf3 Bf3 14.Qf3 Nd8 15.Nd5+/– Nd5 16.Qd5 c6 17.Qf3 Ne6 18.c4 Ng5 19.Qg2 Qg4 20.Kh1 a5 21.Bc3 ab4 22.ab4 Qd7 23.Nf3 Nf3 24.Qf3+/– Ra1 25.Ra1 Bf6 (25...Bf6 26.Ra7 Re8+/–). rampantpawn – ahmed sharkawy_1, ChessWorld.net, 2005.

5.Bg2 Be7 6.Bc6 bc6–/+ 7.Nf3 Bb7 8.c4 e4 9.Nh4 0–0 10.Bf6 (10.Bf6 Bf6 11.Nc3–/+). mduerr (1700) – ajeffries (2075), net–chess.com, 2009.

3.a3 Be6

4.e4 Nf6 5.Nc3 Be7 6.Nf3 0–0 7.d4 Nc6?? 8.d5+– 1–0. Wall,Bill – Kabuti, internet, 2002.

4.Nf3 Be7 5.e3 Nf6=+ 6.c4 0–0 7.Be2 Qd7 8.0–0 Re8 9.Nc3 Nc6 10.Qc2 Rad8 11.Rfd1 (11…Bf5 12.Bd3 Bd3 13.Qd3=; 11.b5 Nb8+=). Popkirov,Stojan – Trautmann,Klaus, GER–ch U11 Friedrichroda, 1997.

4.Nf3 Nf6 5.d4 e4 6.Ng5 =+.

4.e3

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.a3).

4.e3 Nf6 5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.Nf3 Nf6 5.a3).

3.a3 Be7

4.c4 Bf6 5.Nc3 Ne7 6.Ne4 Bh4 7.Nf3 Nec6 8.Nh4 Qh4 9.d3 0–0 10.g3 Qd8 11.b5 Na5 12.Bg2 a6 13.a4 b6 14.Nd6 Ra7 15.Nc8 Qc8 16.Be5 Nd7 17.Bc3 Nc5 18.Ba5 ba5 19.d4 Ne6 20.e3 ab5 21.cb5 c5 22.bc6 1–0. Wall,Bill – Chailene, Microsoft Gaming Zone, 1999.

4.e3 f5 5.c4 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.a3 Nf6 5.c4 Be7).

4.e4 Nf6 5.Nf3 Ne4 6.Qe2 (6.d4 a5 7.de5 ab4+=) 6...Nf6 7.d4 (7.Nc3 a5 8.b5 c5+=) 7...ed4 8.Bd4 (8.Qb5 c6 9.Qg5 Nd5–/+) 8...0–0 9.g3 (9.Qd3!?–/+) 9...Re8 10.Qd3 (10.Bg2 c5 11.bc5 Nc6–/+) 10...c6 (10...c5!? 11.Be3 Na6 12.Be2–+) 11.Bg2 d5 (11...Bf8!? 12.Kf1–+) 12.0–0 Bg4 White has an active position (12...a5 13.b5–/+) 13.Ng5 (13.h3 Bh5+=) 13...Bd6 (better is 13...h6!? 14.Nf3 a5–/+) 14.Bf6= Qf6 15.Qh7 Kf8 16.Qh8 Ke7 17.Re1 Be6 18.Qh5 g6 19.Qh4?? (19.Qg4 Kd8 20.Ne6 Re6=) 19...Rh8?? throws away the game (better is 19...Qa1 seems even better 20.Ne6 Kd7–+) 20.Nh7?? stumbles just before the finish (better is 20.Qg4!= was possible) 20...Qh4–+ 21.gh4 Rh7 22.Nc3 Rh4 23.Re3 Rh2 24.Rae1 Nd7 25.b5 Rah8 26.Rd1 Kd8 27.Rb1 d4 28.Rf3 dc3 29.bc6 bc6 30.Rb7 Bd5 31.Rc3 Bg2 32.f3 Kc8 33.Rc6 Kb7 34.Rd6 Kc7 35.Rd2–+ Rh1 36.Kf2 Bh3 37.c4 Rh2 38.Ke3 Rd2 39.Kd2 Be6 40.Kc3 f5 41.Kb4 g5 42.c5 Kc6 43.a4 Nc5 44.a5 g4 45.fg4 fg4 46.a6 g3 47.Ka5 g2 48.Kb4 g1Q 49.Ka3 Rh4 50.Kb2 Qg3 (50...Qg3 51.Kc2 Rh2 52.Kd1 Qg1; 50...Qf2 51.Kc3 Rc4) 0–1. Cerezal,Luis Jorge – Merino Bravo,Alejandro, Valladolid CC Social Velasco–A, 2000.

4.Nf3 Nf6 5.c4 Bg4 6.e3 0–0 7.Be2 a5 8.0–0 ab4 9.ab4 Ra1 10.Ba1 Nc6 11.b5 Nb4 12.Qb3 d5 (12...e4 13.Qb4 ef3 14.Bf3 Bf3 15.gf3 Qd7+=) 13.Bc3 (better is 13.Be5!? Bd6 14.Bf6 Qf6 15.cd5+/–) 13...dc4= 14.Bc4 Bf3 15.Bb4 Bb4 16.Qb4 Bd5 17.Rd1 Bc4 18.Qc4 Qd6 19.Nc3 Rd8 20.d4 ed4 21.Rd4 Qe7 22.Nd5 Nd5 23.Rd5 g6 24.g3 Rd5 25.Qd5 b6 26.Qa8 Kg7 27.Qa1 Kf8?? (27...f6 28.Qa4=) 28.Qa8 (28.Qh8) 28...Qe8 29.Qa3 Qe7 30.Qa8 Kg7 31.Qa1 f6 32.Qc3 Qc5 33.Qc5 bc5 34.Kf1 Kf7 35.Ke2 Ke6 36.e4 Kd6 37.Kd3 c6? (37...g5 38.f3 Ke6+–) 38.b6+– c4 39.Kc4 c5 (39...g5 40.f4 gf4 41.gf4+–) 40.b7 Kc7 41.Kc5 Kb7 42.Kd6 1–0. Fournier,Frederic (2055) – comemelacabeza (1970), Active, 2004.

4.c4 Nf6

(--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.a3 Be7).

5.d4 ed4 6.Bd4 0–0 7.e3 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4 0–0 6.d4 ed4 7.Bd4).

3.a3 f5

4.c4 g5 5.e3 Bg7 6.Qh5 Kd7 7.Qf7 Qe7 8.Qe7 (8.Qf5 Kd8 9.Qc2 Nf6+/–) 8...Ne7= 9.Nf3 Ng6 (better is 9...g4!? 10.Ng1 Kd8=) 10.Ng5+/– Ke7 11.Nc3 Rg8 12.Nd5 Kd7 (12...Kd8 13.Nh7 c6 14.Nc3+–) 13.Bd3 (better is 13.Nh7!? Rh8 14.Ng5+–) 13...e4+/– 14.Be2?? (better is 14.Bg7 Rg7 15.Bf1+/–) 14...Bb2–/+ 15.Rb1 Ba3?? (15...Nf8 16.Ne4 fe4 17.Rb2 Rg2 18.Nf6 Ke7 19.Ne4 Nbd7+=) 16.b5?? (16.Nf6 Kd8 17.Ng8 Nc6+–) 16...Bc5?? 17.0–0?? c6?? 18.bc6?? bc6?? 19.Nb4?? Bb4 20.Rb4 Na6 21.Rbb1 Nc5 22.d4 Na6 23.f3?? c5 24.fe4 cd4?? 25.ed4? fe4 26.Ne4 Ke6 27.Bg4 Ke7+= 28.Bc8 Rac8 29.Rb7? Ke6?? 30.Ng5 (30.Rf6) 1–0. Fournier,Frederic (1885) – mrouillard (1860), Active (2/0), 2004.

4.d4 Nc6 5.de5 Ne5 6.e3 Nf6 7.Nd2 Be7 8.Ngf3+= Nf7 9.c4 0–0 10.Bd3 a5 11.Qc2+= ab4 12.ab4 Ra1 13.Ba1 d5 14.c5 Ne4 15.Nb3 b6 16.0–0+= bc5 17.bc5 c6 18.Nfd4+= Ne5 19.Be2 Qc7 20.f3+/– Nf6 21.Nf5+– Bf5 22.Qf5 Ned7 23.Bd4 Rf7 24.Ra1 Bf8 25.Qe6 Qb8 26.Na5 Nc5 27.Qc6 Qb4 28.Qb5 Qb5 29.Bb5 Ne6 30.Bb6 Nd7 31.Bd7 Rd7 32.Kf1 g5 33.Nc6 Rb7+= 34.Bd4 Nd4 35.Nd4 Bd6 36.g3 Be5 37.Ra5 Rd7 38.Nc6 Bf6 39.Ke2 Kf7 40.Kd3 Rb7 41.Rd5+– Rb2 42.Rd7 Kg6 43.e4 Rf2? 44.e5 Rf3 45.Ke4 Rc3 46.Rd6 (46.ef6?! Rc6 47.f7 Rf6=) 1–0. Tosic,Miroslav (2480) – Petrovic,Marija (2225), Summer Open, Pirot SCG, 2004.

4.e3 Be7 5.d4 Be6 6.de5+/– de5 7.Qd8 Bd8 8.Be5 Nf6 9.Nf3 0–0 10.Nd4+– Bf7 11.Bb5 c6 12.Bd3 Nbd7 13.Bd6+– Re8 14.Bf5 Ne5 15.Nd2 g6 16.Bh3 Nc4 17.Nc4 Bc4 18.0–0–0 Ne4 19.Bg3 a5 20.Bd7 Re7 21.Nc6 bc6 22.Bc6 ab4?? 23.Ba8+– Bc7 24.Be4 Re4 25.Bc7 ba3 26.Rd8 Kg7 27.Rd7 Bf7 28.Ba5 a2 29.Bc3 Kf8 30.Rhd1 (30.Rhd1 Ra4 31.Ba1+–) 1–0. marus – regloh5, internet, 2001.

4.e3 f4 5.Nf3 Bg4 6.Be2 Nh6 7.0–0 g5? 8.d4 e4 9.Nfd2 fe3 10.fe3 Be2 11.Qe2 c6 12.Qh5 (12.Qh5 Kd7 13.d5+–) 1–0. pieeater – Pekin Dragons, ChessWorld.net, 2011.

4.e4 fe4 5.Nc3 =+.

4.e4 Nf6 5.ef5= Bf5 6.Bc4 d5=+ 7.Bb3 Nc6 8.Nf3 e4 9.Ne5 Ne5–/+ 10.Be5 c6 11.0–0=+ Bd6 12.d4 0–0 13.f4 Ng4 14.h3? Ne3–+ 15.Qe2 Nf1 16.Kf1 Qh4 17.Bd6+/– Rfd8 18.Be5 Re8 19.Nd2 Rf8 20.Ne4+– Be4 21.Qe4 Rae8 22.Bd5! cd5 23.Qd5 Kh8 24.Qb7?? Rf4?? 25.Kg1 Qf2+/– 26.Kh2 Rf7 27.Qe4 Kg8 28.c4 Qb2 29.Rb1 Qa3 30.b5 Qc3 31.Qd5+– Ref8 32.Rf1 Qa5 33.Bd6 Qd8 34.c5 Qe8 35.Bf8 Qf8 36.Rf7 Qf7 37.Qf7 Kf7 38.b6 ab6 39.cb6 1–0. Cruz – helmisflorin, internet, 2009.

4.Nf3 Nc6 5.b5 Nce7 6.e3 b6 7.Bc4 Bb7 8.0–0 Nf6 9.Ng5 h6?? 10.Nf7+– (10…Qd7 11.Nh8+–) 1–0. Klaus Behrmann (1980) – Bodo The Messiah, ChessWorld.net, 2003.

4.Nf3 Nf6 5.e3 g6 6.Bc4 Bg7 7.0–0 Qe7 8.d4 e4 9.Nh4?? g5–+ 10.d5 gh4 11.Nd2 Nbd7 12.Re1 Nb6 13.Bb5 Bd7 14.Bd7 Nbd7 15.Nf1 0–0–0 16.a4 Nb6 17.b5 Nbd5 18.a5 Kb8 19.b6 a6 20.bc7 Qc7 21.Nd2 Ng4 22.c4 Bb2 23.Rb1 Nc3 24.Qc2 Nb1 25.Rb1 Bf6 26.Nb3 d5 27.c5 Qh2 28.Kf1 Qh1 29.Ke2 Qg2 30.c6 Qf2 31.Kd1 Ne3 (31...Ne3 32.Kc1 Qc2#) 0–1. pieeater – bridlingtonbrummie, ChessWorld.net, 2010.

4.c4 Nf6

5.d3 Be7 6.e3 0–0 7.g3 Be6 8.Bg2 c6 9.Ne2 Nbd7 10.Nbc3 d5 11.cd5= cd5 12.0–0 Bf7 13.Rc1 e4 14.Na4 Ng4 15.d4 b5 16.Nc5 Nb6 17.h3 Nh6 18.Nb7 Qd7 19.Na5 Nc4 20.Nc4 bc4 21.Nc3 Be6 22.f3 ef3 23.Qf3 Rad8 24.Ne2 Bf7 25.Rb1 Rfe8 26.Bc1 Kh8 27.b5 Qc7 28.a4 Qa5 29.Ra1 Bb4 30.Rd1 a6 31.ba6 Qa6 32.Bd2 Bd2 33.Rd2 Rb8 34.Ra3 Rb3=+ 35.Rda2 Ree3 36.Qe3= Re3 37.Re3 Qb6 38.Kh2?? f4 39.Nf4 Nf5 40.Rea3 g5 41.Ne2 Qa5 42.Rb2 h5 43.Rb5 Qe1 44.a5 Qe2–/+ 45.a6 c3?? 46.a7–+ Ne3 47.a8Q Kg7 48.Rb2 cb2 49.Re3 Qe3 50.Qb7 Qc1 51.Bd5 Qc2 52.Bg2 b1Q 53.Qe7 Qf5 (53...Qf5 54.Qe5 Qe5 55.de5 Qb2–+) 0–1. Logvinov,Kirill – Galauov,Ruslan (2110), RUS SFO–ch, 2007.

5.d4 e4 6.e3 Be7 7.Nc3 0–0 8.Qc2 Kh8 9.f3 ef3 10.Nf3 Ng4 11.Qd2 Bg5 12.Ng5 Qg5 13.Nd5 Re8?? Increases the pressure on the backward pawn (better is 13...Rf7 14.h4 Qh6=) 14.Nc7+– Re3 (14...Bd7 15.Ne8 Be8+–) 15.Be2 f4 16.h4 (16.Na8?! Qh4 17.g3 Qe7+–) 16...Qe7 17.Nd5 (17.Na8 Nf6 18.Bc1+–) 17...Qe4+/– 18.Ne3 Ne3 19.Bf3 Qg6 20.Rc1 Nd7 21.d5 Nf6 22.Bf6 Qf6 23.Qc3 Qg6 24.Qd4 Qg3 25.Ke2 Bf5 26.c5 Re8 27.Kd2 Qf2 28.Kc3 Qa2 29.b5?? Qa3 30.Kd2 Qa2 31.Kc3 Qa5 32.Kb3 Qb5 33.Kc3?? dc5 34.Qd2 Qb4# 0–1. Ostojic,Katarina – Pihajlic,Amalija (1935), Beograd SER, City Ch (w), 2012.

5.d4 Be7 6.de5 Ng4 7.ed6+/– Bf6 8.Bf6 Qf6 9.Nd2 0–0 10.h3?? Nf2?? 11.Kf2+– Qh4 12.g3 Qd4 13.e3 Qd6 14.Ndf3 Qh6 15.Qd4 Nc6 16.Qc3 Be6 17.b5 Ne7 18.Rd1 f4 19.ef4 Nf5 20.Ne2 Rae8 21.Ned4 Ng3 22.Kg3 Qf4 23.Kf2 Bc8 24.Qd2 Qf6 25.Bd3 b6?? 26.Rde1 Bb7?? 27.Re8 Re8 28.Re1 Rf8 29.Be4 Be4 30.Re4 Qh6 31.Qh6 gh6 32.Rg4 Kh8 33.Kg3 (33.Kg3 Rg8 34.Rg8 Kg8 35.Ne6+–; 33.Ne6!? Rf6 34.Nc7 h5+–) 1–0. revbodio (1930) – mattv6 (1875), Caissa's Web, 2006.

5.e3 Be7 6.d4 e4 7.Nc3 0–0 8.Nh3 c6 9.Qb3 Na6 10.Be2 Nc7 11.0–0 Be6 12.f3 d5 13.Ng5 Qd7 14.Ne6 Qe6 15.fe4 fe4 16.b5 Kh8 17.a4 Ng4 18.cd5 cd5 19.Bg4 Qg4 20.Ba3 Rf1 21.Rf1 Bg5 22.Nd1 Qd7 23.Nf2 h5 24.Nh3 Bh6 25.Nf4 Bf4 26.Rf4 Re8 27.Qd1 g6 28.Qf1 Kg8 29.Rf8 Rf8 30.Qf8 Kh7 31.Qb8 Ne6 32.Qa7 h4 33.Qb8 h3 34.Qg3 hg2 35.Bd6 Qc8 36.Kg2 Qc2 37.Qf2 Qd1 38.h3 Ng7+= 39.a5 Nf5 40.Bf4 Qa4 41.a6 ba6 42.ba6 Qa6 43.Qc2 Qf6 44.Qc7 Qg7 45.Qd8 Qb7 46.Kf1 Kg7?? 47.Be5+/– Kf7 48.Qf6 Ke8 ˝–˝. Soppe,Guillermo (2465) – Needleman,Alejandro (2420), Magistral Vince Toth 4th, 2002.

4.d4 ed4

5.Qd4 Nc6 6.Qd1 =.

5.Bd4 Nc6 6.Bb2 a6 7.e3 Be6 8.Nf3 h6 9.Nbd2 Nf6 10.Bd3 Be7 11.Nh4 Qd7 12.Rb1 0–0+= 13.Ng6 Rfe8 14.h4 Bf7 15.Bc4 d5 16.Ne7 Qe7 17.Bb3 f4 18.Bf6 Qf6–/+ 19.Qf3 Nd4–+ 20.Qd1 fe3 21.Nf3 Nf3 22.Qf3 Qc3 23.Kf1 e2 24.Kg1 e1Q 25.Re1 Re1 26.Kh2 Rh1 27.Kh1 Qf3 28.gf3 Re8 29.Kg2 c6 30.Kg3 d4 31.Bf7 Kf7 0–1. Wietrich,Edgar – Ricord,Lucas (1810), FRA–chT4, 2004.

4.d4 e4

5.e3 Nf6 6.c4 a5 7.Nc3 Be7 8.Nge2 0–0 9.h4 c6 10.Nf4 Na6 11.Be2 Rb8 12.b5 Nc7 13.a4 d5 14.b6 Ne6–/+ 15.Ne6 Be6 16.c5 Nd7 17.g3= Rf6 18.f3 ef3 19.Bf3=+ Rf8 20.0–0 Nf6 21.Rf2 Ne4 22.Be4 fe4 23.Qe2 Bh4?? 24.Rf8+/– Kf8 25.gh4 Qh4 26.Qf2 Qf2 27.Kf2 Ke7 28.Rf1 g5 29.Kg3 h5+= 30.Ne2 Bg4 31.Ng1 Rg8 32.Bc1 Be6 33.Bd2 h4 34.Kh2 g4 35.Be1 g3 36.Bg3 hg3 37.Kg2–/+ Rg4 38.Rf4? Rg5 39.Ne2 Bg4 40.Ng3 Bf3 41.Kf2 Rg6 42.Rh4+– Kf6 43.Rh7 Rg4?? 44.Rb7 Ke6 45.Rc7 Rg8 46.Rc6 Kd7 47.Rd6 Kc8 48.Nf5 Kb7 49.Ne7 Rg7 50.Rd7 Ka6 51.Ra7 1–0. shakewell – BATTLEPHIL2, Live Game Caissa's Web, 2004.

5.e3 Nf6 6.c4 Be7 7.Nc3 Be6 8.h4 d5 9.c5 Bf7 10.Be2 Nbd7 11.Nh3 Nf8 12.Ng5 Ne6 13.Qa4 c6 14.b5 Qc7 15.Ne6 Be6 16.g3 0–0=+ ˝–˝. Etmans,Drs. Maarten D (2025) – Boschma,Bouwe (2315), Dutch CC Championship KE08, 2005.

5.e3 Nf6 6.d5 c6 7.Nc3 =.

5.e3 Nf6 6.d5 Be7 7.Ne2 Nbd7 8.Nf4 Ne5 9.Be2 0–0 10.0–0 Kh8 11.Nc3 g5 12.Ne6 Be6 13.de6 c6 14.Na4 Qc8=+ 15.c4 Qe6 16.c5 d5 17.f4 ef3–/+ 18.Bf3 Kg8 19.Bd4 Ne4 20.Rb1 a6 21.Nb6 Rad8 22.a4 Rf6 23.Be4 de4 24.Qb3= Qb3 25.Rb3 Re6 26.Rf5 Nd3 27.Rb1 Rf8 28.Rf8 Bf8 29.Nd7 Bg7=+ 30.Bg7 Kg7 31.Nb6 Rf6 32.Nc4= Re6 33.Nd6 Ne5 34.Nb7 Nc4 35.Nd8 Re8? 36.Nc6+– Ne3 37.b5 ab5 38.ab5 Nd5 39.b6 e3 40.b7 e2 41.Re1 (41.Re1 Nc3 42.b8Q Rb8 43.Nb8+–) 1–0. Kaellman,Ralf – Lardot,Derik, FIN–chT 1div C, 1997.

4.e3 Be6

5.c4 Nd7 6.Nf3 g6 7.d4+= Bg7 8.Qc2 Nh6 9.Nbd2 0–0 10.de5 de5 11.Rd1 Qe7 12.c5 Nf7 13.Bc4 Rfd8 14.0–0 b6 15.c6 Nf8 16.Qb3 b5= 17.Be6 Qe6 18.Qe6 Ne6 19.Nb3 g5 20.Nc5 Nc5 21.bc5 Bf6 22.g3 Kf8 23.Rd7 Rd7 24.cd7 c6 25.Rd1 Ke7 26.e4 f4 27.g4 Rd8–/+ 28.Bc3 Rd7 29.Rd7 Kd7 30.h3 Ke6–+ 31.Kf1 Be7 32.Bb4 a5! 33.Ba5 Bc5 34.Bb4 Kd6 35.Ke2 Bb4 36.ab4 c5 37.bc5 Kc5 38.Kd3 Kb4 39.Kc2 Kc4 40.Kd2 b4 41.Kc2 b3 42.Kb2 Kd3 43.Ng1 Ke4 44.Kb3 Kd3 45.Kb4 e4 46.Kc5 Ne5 (46...Ne5 47.h4 gh4–+) 0–1. Bernhard,Alfred – Boehm,Ingo, Ruhrgebiet VK Gr1, 1999.

5.c4 Nf6 6.Nf3 Nbd7 7.Be2 g6 8.Ng5 Qe7 9.0–0 Bh6 10.Ne6 Qe6 11.d4 e4 12.d5 Qe7 13.Nc3 a6 14.Qa4 b6? 15.Nb5+/– Rc8 16.Na7 Ra8 17.Qa6 0–0 18.Nc6 Qf7 19.Qb7 Rac8 20.Na7 Rb8 21.Qc6 Ne8 22.c5 Ne5? 23.Be5+– Nf6?? 24.Bf6 (24.Bf6 Qf6 25.Qc7 bc5 26.Nc6+–; 24.cd6!? cd6 25.Qd6 Rbd8 26.Qf6 Qf6 27.Bf6 Rf6+–) 1–0. Trkn – Daniel Zagt, itsyourturn.com, 2001.

5.Nf3 Nf6 6.c4 Be7 7.d4 e4 8.d5 ef3 9.de6+= fg2 10.Bg2 c6 11.Rg1 Qc8= 12.Bh3 g6=+ 13.Bf5 gf5 14.Bf6 Bf6 15.Qh5 Kd8 16.Qf7 Be7 17.Rg7 Re8 18.Nc3 a5 19.Rd1 ab4–/+ 20.c5 bc3 21.cd6 c2 22.Rg8 cd1Q 23.Kd1 Bf8 24.e7 (24...Kd7 25.ef8Q Kd8 26.Q8e8#; 24.Qf6 Be7 25.Qe7#) 1–0. Wilk,Adam (2015) – Sowa,Bernard, Poland–chT disctrict, 1996.

4.e3 Nf6

5.Nc3 Be7 6.Bb5 c6 7.Bd3 0–0=+ 8.Qb1 Be6 9.Nf3 h6 10.0–0 e4 (10...e4 11.Nd4 Bf7= (11...ed3? 12.Ne6 dc2 13.Qc2+–); 10...Qe8 11.Be2=+). smoothmovermovesagain – touchdown, ChessWorld.net, 2006.

5.c4 Nc6 6.d4 ed4 7.ed4 =.

5.c4 g6 6.d4 ed4 7.Bd4 Bg7 =.

5.c4 g6 6.d4 e4 7.Be2 ˝–˝. Hecimovic,Ivan (2275) – Lasic,Luka (2260), Velika Gorica op 4th, 2004.

5.c4 g6 6.Nf3 Bg7 7.g3 0–0 8.Bg2 Nbd7 9.d4=+ e4 10.Nfd2 Nb6 11.Nc3 Bd7 12.Qb3 Kh8 13.0–0 Qe8 14.Rac1 Na4 15.Na4 Ba4 16.Qa2 Bd7 17.Nb1 c6 18.Nc3 Rc8 19.Rfd1 Be6 20.d5 cd5 21.cd5 Bd7 22.Ne2 Qf7 23.Nf4 Ng4 24.Ne6 Be6 25.de6 Qe7 26.Bg7 Kg7 27.Qd5 Ne5 28.Bf1 a6 29.b5 ab5= 30.Bb5 Kf6 31.a4 Rfd8 32.a5 Rc7 33.Kg2 Rdc8 34.Rc7+/– Rc7 35.Qd6 Qd6 36.Rd6 Rc5 37.Rb6+/– Rc7 38.Rd6 Rc5= 39.Rb6 Rc7 40.Be2 Nc6= 41.Rb5 Ke6 42.Bc4 Kf6 43.Rc5 Ke7 44.a6 ba6=+ 45.Ba6 Kd6 46.Rc1 Ra7 ˝–˝. Diaz Lombardo,Isidro (2000) – Hack,Bolivar (2000), Fide Mercenarios 1st, 1994.

5.d3 Be7 6.Nf3 0–0 7.Be2 Be6 8.0–0 Nbd7 9.Nc3 h6= 10.Rb1 Nb6 11.a4 a5 12.b5 Kh8 13.Ra1 g5 14.h3 f4 15.ef4 gf4 16.Ne4 Rg8 17.Nf6 Bf6 18.Re1 Bh3–/+ 19.Kh2? Rg2?? 20.Kh3=+ Qg8 21.Nh4?? Bh4–+ 22.Rg1? Rg1 23.Qg1 Qg1 24.Rg1 Bf2 25.Rg6 Na4 26.Ba3 Nc3 27.Kg2 Be3 28.Kf3 Nb5 29.Bb2 Kh7 30.Re6 a4 31.Re7 Kg6 (31...Kg6 32.d4 Nd4 33.Bd4 Bd4 34.Rc7 Ra7–+) 0–1. tpt456 – onurtasan (1615), internet, 2007.

5.d4 Nc6 =.

5.d4 e4 6.Bc4 d5=+ 7.Bb3 Bd6 8.c4 c6 9.Nc3 Be6 10.cd5 cd5 11.Nb5 Be7 12.Rc1 Nc6 13.Ne2 0–0 14.Nf4 Bf7 15.Nc3 Rc8 16.0–0 g5 17.Nh3 h6 18.Qd2 Kh7 19.Bd1 Bd6 20.Kh1 Ne7 21.Ng1 f4 22.Qe1 Bb8 23.g3 f3 24.Nf3 ef3–/+ 25.Bf3 Bg6 26.e4? de4 27.Ne4 Rc1 28.Bc1 Ne4 29.Be4 Qd4 30.Bb7 Qe5 31.Qd2 Qb5 32.Bg2 Be5 33.Qe3 Nc6 34.Rd1 Bg7 35.Kg1 Rf7 36.Rd6 Ne7 37.Re6 Qd7 38.Qb3 Nf5 39.Re1 Nd4–+ 40.Qa2 Nf3 41.Bf3 Rf3 42.Bb2?? Qd2 (42...Qd2 43.Qe6 Rf2–+) 0–1. Paauwe,J – Montenegro Garcia,Marcos, HZ Open, Vlissingen NED, 1999.

5.d4 e4 6.d5 Be7 7.Ne2 c6 8.Nf4 0–0 9.Bc4 g5?? 10.dc6+– (10…Kh8 11.Ne6+–) 1–0. marre (1965) – NN, GameColony.com, 2003.

5.Be2 a5 6.Nf3 =.

5.Be2 g6 6.Nf3 Bg7 7.d3 0–0 8.Nbd2 Nc6 9.c4 h6 10.b5 Ne7 11.0–0 Be6 12.Rc1 Qd7 13.a4 Rac8 14.Qc2 b6 15.Qb1 d5? 16.cd5 Nfd5 17.Ne5 Be5 18.Be5 g5 19.Qb2 c5 20.Bg7 Rf7 21.Bh6 g4 22.e4 fe4 23.Ne4 Nf6?? 24.Nf6 Rf6 25.Qf6 Nd5 26.Qg7 Qg7 27.Bg7 Kg7 28.h3 gh3 29.gh3 Bh3 30.Kh2?? Bf1+= 31.Rf1 Kf6 32.Rg1 Rh8 33.Kg2 Nf4 34.Kf1 Ne2 35.Ke2+= Re8 36.Kd2+/– Ke5?? 37.Re1+– Kd4 38.Re8 c4 39.dc4 Kc4 40.Re7 Kb4 41.Ra7 Kc5 42.Ra6 Kb4 43.Rb6 Ka4 44.Rb8 Kb4 45.b6 Kc5 46.b7 Kd5 47.Rc8 Kd4 48.b8Q Kd5 49.Re8 Kd4 50.f4 Kc4 51.f5 Kd4 52.f6 Kd5+– 53.f7 Kd4 54.f8Q Kc4 55.Qff4 Kd5 56.Re5 Kc6 57.Qc8 Kb6 58.Qb4 Ka7 59.Ra5# 1–0. Onkel_Luis (1630) – Tipau, ICC, 2003.

5.Nf3 a5 6.ba5 Be6 7.d4 =.

5.Nf3 Be7 6.Bc4 c6 7.0–0 d5 8.Be2 e4 9.Nd4 0–0 10.c4 a5 11.cd5 cd5 12.b5= Bd6 13.d3 ed3 14.Qd3+= Ne4 15.f4 Nd7 16.Ne6 Ndc5= 17.Nd8 Nd3 18.Bd3 Rd8 19.Bd4 Be6 20.Ra2 Rdc8 21.Rc2 Rc2 22.Bc2 Rc8 23.Bd3 Bc5 24.Rc1= Kf7 25.Kf1 b6 26.Ke2 g6 27.Be4 de4 28.Bc5 Rc5 29.Rc5 bc5 30.b6 Bd5 31.Nc3 Bc6 32.Na4 Ke6?? 33.Nc5?? Kd6+/– 34.b7 Kc7+= 35.Ne6 Kb7 36.Nf8 Kb6 37.Kd2 Kb5 38.Kc3 Ka4 39.Kb2 Kb5 40.Nh7 Kc4 41.Kc2 Ba4=+ 42.Kd2 Kb3 43.Nf8 Be8 44.h3 Ka3 45.Kc3 Ka4 46.Ne6 Bf7= 47.Nd4 Ka3 48.g4 fg4 49.hg4 a4? 50.f5 gf5 51.gf5 Ka2 52.f6 Kb1 53.Kb4 Be8? 54.Ka3 Kc1+/– 55.Nf5 Kd2 56.Nd6 Bg6 57.f7?? Bf7= 58.Nf7 Ke3 59.Nd6 Kd3 60.Ne4 Ke4 61.Ka4 ˝–˝. Gaftarnik,O – Minet,Steve (2145), Cappelle op, 1995.

5.Nf3 Be7 6.Bc4 d5 7.Ba2 e4 8.Nd4 Nc6 9.c4 Ne5=+ 10.0–0 Nc4 11.Bc4 dc4 12.Qe2 Qd5 13.Nc3 Qf7 14.f3= ef3 15.Rf3 Bd7 16.Nf5 0–0–0 17.Ne7 Qe7+= 18.Qc4 Be6= 19.Qf4 Rd2 20.Na4 Rhd8 21.Bf6+= Qf6 22.Qf6 gf6 23.Nc5 Bc4 24.Rf4 b5 25.h4 Re2 26.Rf6 Rg8 27.Rf2 Re3 28.a4 Bd5 29.Raf1 Kd8? 30.ab5 Ke7 31.Rd1 c6 32.bc6 Bc6 33.Ra2 a6 34.Na6 Ra8 35.Rdd2 Re1 36.Kf2 Re4 37.Re2 Re2 38.Re2 Kd6 39.Nc5 Rb8 40.Re6 Kd5 41.Re4 h5 42.Rf4 Rg8 43.g3 Ra8 44.Rf5 Kc4 45.Rh5 Ra1 46.g4 Ra2 47.Kg3 Ra3 48.Kf4 Kb4 49.Ne4 Ra4 50.Re5 1–0. Filipek,Jakub (2370) – Hulshof,Peter (2220), Essent Open, Hoogeveen NED, 2002.

5.Nf3 Be7 6.Bc4 e4 7.Nd4 =.

5.Nf3 Be7 6.Be2 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.Nf3 Nf6 5.Be2 Be7 6.a3).

5.Nf3 g6 6.Be2 Bg7= 7.0–0 0–0 8.d3 Kh8 9.Nbd2 Be6 10.c4 Nc6 11.b5 Ne7 12.a4 Qd7 13.Qc2 Rae8 14.a5 c6 15.bc6 bc6 16.Qa4 Nh5 17.Bc3 Ng8 18.Bd1 Bf7 19.Qa2 e4 20.de4?? Bc3–+ 21.ef5 Ba1 22.fg6 Bg6 23.Qa1 Qg7 24.Qa3 Nhf6 25.Qd6 Ne4 26.Ne4 Be4 27.Qb4?? Bf3 28.Bf3 Rf3 29.Qd6 Rf6 30.Qg3 Ref8 31.Qg7 Kg7 32.f3 Rb8 33.e4 Rb4 34.Kf2 Rc4 35.Kg3 Rc2 36.Rb1 Rg6 37.Kf4 Rgg2 38.Rb7 Kh6 (38...Kh6 39.Ra7 Rh2–+; 38...Kf6!? 39.Rh7 Ne7 40.h4–+) 0–1. Onkel_Luis – sardanapal, ICC, 2003.

5.c4 Be7

6.d4 ed4 7.ed4 b6 8.Bd3+= Bb7 9.Nf3 Nbd7 10.Bf5+/– Be4 11.Be4+– Ne4 12.Qc2 Ndf6 13.d5 0–0 14.0–0 a5 15.Nc3 Nc3 16.Bc3 h6 17.Nd4 Qd7 18.Ne6 Rfe8 19.Qg6 Bf8 20.Rfe1 Kh8 21.Bf6 gf6 22.Qf6 Bg7 23.Qg7 Qg7 24.Ng7 Kg7 25.b5 Re5 26.Re5 de5 27.Re1 Re8 28.Re4 Kg6 29.f4 Kf5 30.Re5 Re5 31.fe5 Ke5 32.g4 Kd4 33.h4 Kc4 34.g5 hg5 35.h5 Kd5 36.h6 Kc5 37.h7 Kb5 38.h8Q (38.h8Q c5 39.Qe8 Kc4 40.a4+–) 1–0. Gordon – ana_goldberg, internet, 2005.

6.d4 e4 7.Nc3 0–0 8.Qc2 a5 9.b5 c6 10.h3 Nbd7 11.Nge2 Nb6 12.Na4 Be6 13.Nb6 Qb6 14.Nc3 cb5 15.d5 Bd7 16.cb5 Rac8 17.Qd2 Qc5 18.Be2 Be8 19.0–0 Bf7 20.Rfd1 Nd5= 21.Nd5 Bd5?? 22.Rac1 Qc1 23.Qd5 Kh8 24.Rc1 (24.Rc1 Rc1 25.Bc1+–) 1–0. Gouma,Ronald – Kok,Marijke, Den Bosch op, 1992.

6.Ne2 0–0 =.

6.h3 0–0=+ 7.Qc2 Kh8 8.Nf3 a5 9.b5 e4 10.Nd4= c5 11.bc6 bc6 12.Be2 c5 13.Nb5 Nc6 14.f4 ef3 15.Bf3= Bd7 16.N1c3 Rb8 17.0–0–0 Ne5–/+ 18.Be2 Ne4 19.Ne4=+ fe4 20.Be5 de5 21.Qe4 Bf5 22.Qe5= Rb5?? 23.cb5+– Bf6 24.Qf4 c4 25.Qf5 Bb2 26.Kb2 Rf5 27.Bc4 Rf2 28.Kc3 Qd6+/– 29.Kb3 Rd2 30.Rd2 Qd2 31.Rf1 Qe3 32.Ka4 h5 33.Rf5 g6 34.Rf6 Qe4+= 35.Rc6 Qg2 36.Rc8 Kg7 37.Rc7 Kf6 38.b6+= Qg3 39.Rc6+– Kf5 40.b7 Qb8 41.Ba6 Qe8 42.Kb5 g5+/– 43.Kb6 g4 44.hg4 hg4 45.Rc8 Qe6 46.Ka7 Qd7 47.Rc5 Ke4 48.Ka8 Qd6 49.Ra5 Qd8 50.b8Q Qa5 51.Qe8 Kd4 52.Qd7 Kc5 53.Qf5 Kb6 54.Qe6 Kc5?? 55.Kb7 Qd8 56.Qf5 Qd5 57.Qd5 Kd5 58.Kb6 Kd6 59.Bb7 Kd7 60.a4 (60.a4 g3 61.a5+–) 1–0. Gagnon,Mark – Anderson,Renard (2245), LERA Class–ch, 1994.

6.Nf3 0–0

7.Qb3 e4 8.Nd4 c5 9.Nc2 Nc6 10.Nc3 Qe8 11.Nd5 Qf7 12.Bc3 Bd8 13.Qb2 Nd5 14.cd5 Ne5 15.bc5 Nd3 16.Bd3 ed3 17.Nb4 f4 18.0–0–0 Bf5=+ 19.c6 Rb8 20.Na6+= ba6 21.Qb8+/– Bf6 22.Qd6 Rd8 23.Qf4 Qd5+/– 24.Bf6?? Qb3 25.Qc4 Qc4 26.Kb2 Qc2 27.Ka1 gf6 28.Rc1 Qd2 29.Rhd1 Qa5 30.c7 Qa3–+ 31.Kb1 d2 32.Rc2 Rc8 33.Rdd2 Rc7 (33...Rc7 34.e4 Rb7 35.Rb2 Be4 36.Kc1 Qa1 37.Rb1 Rb1#) 0–1. Buck,K1 (1805) – Kuehn,Pe2 (2035), 10. TCh–Euro sen, 2008.

7.Be2 c6 8.0–0= Na6 9.d4 e4 10.Nfd2 Nc7 11.Nc3 d5 12.Rc1 Kh8 13.Qc2 Qe8 14.cd5 Ncd5 15.Nc4 Nc3 16.Bc3 Nd5 17.Ne5 Bd6 18.Bb2 Be5 19.de5 Qg6 20.Qc5 Be6=+ 21.f4 b6 22.Qc6 Ne3 23.Rf2 Rac8 24.Qb7 Rc1 25.Bc1 Ng4 26.Rf1 Qf7 27.Qf7 Rf7 28.Rd1 Rd7 29.Rd7+/– Bd7 30.Bc4 Nh6 31.h3 Ng8 32.Kf2 Ne7 33.Be3 Bc6 34.g4 g6 35.b5 Bd5 36.Bf1 Kg8 37.g5 Kf7 38.Bd2 Bb3 39.Ke3 Ke6 40.Kd4 Nd5 41.Be2 Nc7 42.Kc3 Ba4 43.Bc4 Ke7 44.Kb4 Bc2 45.a4 Ne6 46.a5 Bd3 47.ab6+– ab6 48.Bd3 ed3 49.Be3 Kd7 50.Kc3 Nc7 51.Kd3 Nb5 52.Bb6 Kc6 53.Be3 Kd5 54.h4 Nc7 55.Kc3 Ne6 56.Bd2 Ng7 57.Kd3+– Nh5 58.Bc1 Ng3 59.Bd2?? Nf1?? 60.Bc1?? Nh2?? 61.Ke2 Ng4 62.Kf3 h6 63.Kg3 hg5 64.Kg2?? gh4 (64...gh4 65.Bb2 Ne3 66.Kh3 Nc4=; better is 64...gf4!? 65.e6 Ke6 66.Bf4 Ne5–+) 0–1. fuiste – manua2, ajedrez21.com, 2001.

7.Be2 Nbd7 8.d4 e4 9.Ng5 Nb8 10.d5 h6 11.Nh3 Kh7 12.Nc3 a5 13.Nf4 g5 14.Nh5 Nh5 15.Bh5 Nd7 16.Be2 Ne5 17.0–0 Bf6 18.Qc2 g4 19.c5 Bd7 20.Qd2 Qe8 21.Kh1 Qh5 22.Nb5 Nf3? 23.gf3+– gf3 24.Nd4?? fe2 25.Ne2?? Qf3 26.Kg1 f4! 27.ef4 Bh3 (27...Bh3 28.Bf6 Qg2) 0–1. Skulsky,Ian – Ljubisavljevic,Zivojin Z (2305), Vancouver Keres mem op, 1998.

7.Be2 h6 8.0–0 Be6 9.d4 e4 10.Nfd2 Nbd7 11.d5 Bf7 12.Qb3 Nh7 13.f3 ef3 14.Nf3 Bh5 15.Nd4 Be2 16.Ne2 c5 17.dc6 bc6 18.Nd4 Bg5 19.Nc6 Qb6?? 20.c5 Kh8 21.cb6 Nb6 22.Nd4 (22.Nd4 Bf6 23.Rf5+–) 1–0. Diederich,Hauke – Wolf,Christian (2095), GER–chT WK II schools U18, 1999.

7.g3 Bd7 8.d4 e4 9.Nfd2 =+.

7.g3 f4 8.ef4 ef4 9.gf4 Bg4 10.Be2 Ne4 11.Rg1 h5 12.h3 Bh4 13.Nh4 Qh4=+ 14.d3?? Nf2 15.Kd2 Nd1 16.Bd1 Qh3 (17.Bg4 Qh2 18.Kc3 Qg1 19.Be6 Kh7–+; better is 16...Qf2!? 17.Kc1 Qg1 18.hg4–+) 0–1. slavisa11 – maxangst, Live Game Caissa's Web, 2004.

4.g3 Nf6

5.Bg2 g6 6.d3 Bg7 7.c4 0–0 8.Qb3 Qe7 9.a4 c6 10.a5 Be6 11.Nf3 h6 12.Nbd2 Kh7 13.h3 Bg8 14.e4 fe4=+ 15.de4 Na6 16.0–0= Nc7 17.Qc2 Ne6 18.c5 dc5 19.Ne5 Rad8 20.Ng6+/– Kg6 21.e5 Kf7 22.ef6 Bf6 23.Bf6 Qf6 24.Ne4 Bh7 25.bc5 Qe5 26.a6 ba6 27.Ra6 Be4 28.Ra7 Kf6 29.Be4 Nd4 30.Qd3 Qc5 31.Rh7 Rg8? 32.Rh6 Kf7 33.Bg6 Kf8 34.Rh7 Rg7 35.Rh8 Rg8 36.Rg8 Kg8 37.Bh7 Kh8 38.Be4 Qe5 39.Qe3 Rd6 40.Rb1 Re6 41.Re1 Qf6 42.Kh1?? Nc2= 43.Qa7 Re4–/+ 44.Qb8 Kg7 45.Qc7 Kg6 46.Re4 Qf3 47.Kg1 Qe4 48.Qd6 Kf7 49.Qd7 Kg8 50.Qd8 Kh7 51.Qd7 Kh6 52.Qd6 Kg7 53.Qd7 Kf6 54.Qd8 Ke6 55.Qe8 Kd5 56.Qf7 Kd4 57.Qf6 Kd3 58.Qd6 Kc4 59.Qd2 c5–+ 60.h4 Kb3 61.Qh6 Nb4 62.h5 c4 63.Qb6 c3 64.h6 c2 (64...c2 65.Qc7 Qc4 66.Qc4 Kc4–+) 0–1. Guerrini,Donato – Barlocco,Carlo (2160), Magenta op, 1999.

5.Bg2 g6 6.d3 Bg7 7.c4 0–0 8.Nc3 c6 9.Nf3 Qe7 10.0–0 Kh8 11.e3 Be6 12.Nd2 d5 13.cd5 cd5 14.b5 Nbd7 15.d4 e4 16.a4 Qf7 17.Nb3 g5 18.f4 ef3 19.Bf3 Qg6 20.Qe2 Rae8 21.Qc2 b6 22.a5 Bh6 23.Rfe1 g4 24.Bg2 Ne4 25.Ne4 fe4 26.ab6 ab6 27.Be4 Bf5 28.Bf5 Qf5 29.Qf5 Rf5 30.Bc1 Nf6 31.Ra6 Ne4 32.Rb6+– Ng5 33.Kg2 Ref8? 34.Rh6 Rf2 35.Kh1 Nf3 36.Rd1 Rf6 37.Rh5 Rf5 38.Rh4! Nh4 39.gh4 Re2 40.b6?? Rff2= 41.b7 Rh2 ˝–˝. Labahn,Wolfgang (2220) – Reeh,Oliver (2395), Wichern op 5th, 1999.

5.Bg2 g6 6.d3 Bg7 7.c4 0–0 8.Nf3 a5 9.0–0 ab4 10.ab4 =.

5.Bg2 g6 6.d3 Bg7 7.Nd2 Qe7 8.Nh3 Nbd7 9.0–0 0–0 10.c4 =.

5.Bg2 g6 6.d3 Bg7 7.Nf3 0–0 8.0–0 e4 9.Nfd2 Qe7 10.c4 =.

3.a3 g6

4.c4 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.a3 g6).

4.c4 Bg7 (--> 1.b4 e5 2.a3 g6 3.Bb2 Bg7 4.c4 d6).

4.d4 Nc6 5.d5 Nce7 6.e4 Nf6 7.Qf3 Bg4?? 8.Qf6+– Rg8 9.Nc3 Bg7 10.Qh4 f5 11.h3 Bh5 12.g4 g5 13.Qh5 Ng6 14.ef5 Qf6 15.Ne4 Qf7 16.fg6 hg6 17.Qg5 Rh8 18.h4 Bh6 19.Bb5 Kf8 20.Qf6 Qf6 21.Nf6 Bf4 22.Nf3 Ke7 23.Ne4 a6 24.Bd3 Raf8 25.Rd1 Rfg8 26.c4 g5 27.h5 Rh6 28.Bc1 c6 29.Nfg5 Bc1 30.Rc1 (30.Rc1 Rg7 31.Rh4+–) 1–0. COMP – mapau, internet, 2001.

4.d4 Bg7 5.de5 de5 6.Qd8 Kd8 7.Nf3 f6 8.Nbd2 c6 9.e3 Be6 10.Ne4 Kc7 11.Nc5 Bf7 12.Be5 fe5 13.Ng5 Nh6 14.Nge6 Kc8 15.Ng7+= b6 16.Nce6 Kd7 17.Rd1 Ke7 18.Nc7 Nd7 19.Na8 Ra8 20.b5 c5 21.g4 Kf6?? 22.Rd7 Kg7 23.g5 Nf5 24.Bc4 Rf8 25.Kd2 e4 26.Bd5 Nd6 27.Rd6 Bd5 28.Rd5 Rf2 29.Kc3 Re2 30.Rd7 Kg8 31.Ra7 Re3 32.Kb2 Re2 33.Rb7 Rg2 34.Rd1 (34…Rf2 35.Rb6+–) 1–0. kamret (2185) – allgall (1665), GameColony.com, 2003.

4.e4 Bg7 5.Nf3 Ne7 6.d3 0–0 7.c4 a6 8.Be2 f5 9.0–0 f4 10.Nbd2 b6 11.Rb1 c5= 12.bc5 bc5 13.Bc3 Nbc6 14.Rb2 Bd7 15.Qc2 Rb8 16.Rfb1 Qc7 17.Rb8 Rb8 18.Rb8 Qb8 19.h3 h6 20.Kh2 Bf6 21.Bd1 Kf7 22.Nb3 Nd4 23.Nfd4 cd4 24.Bd2 Ba4 25.Qa2 Nc6 26.Bc2 h5 27.Na1 Bc2+= 28.Qc2 g5 29.Nb3 Bd8 30.c5 g4 31.cd6 Qd6+= 32.Qc4 Kg7 33.hg4 hg4 34.Bb4?? Qh6–+ 35.Kg1 f3?? 36.gf3?? gf3–+ 37.Nd2 Qg5 38.Kf1–/+ Qg2 39.Ke1 Qg1 40.Nf1=+ Qg6 41.Bc5 Bh4 42.Bf8?? Kf8–+ 43.Qc5 Ke8 44.Qb6 Bf2! 45.Kd2 Be3 46.Kc2 (46...Qg2 47.Kb3–+). Slavisa2 – drasko2, Live Game Caissa's Web, 2004.

4.Nf3 Be7 5.e3 Nf6 6.Bc4 0–0 7.0–0 b6 8.Nc3 c6= 9.d4 ed4 10.Nd4 d5 11.Bd3 c5 12.bc5 bc5 13.Nf3 d4 14.ed4+/– cd4 15.Nb5 Be6 16.Nfd4 Bg4+/– 17.f3 Bc8 18.Qe1 Ba6 19.Qe5 Re8+/– 20.Qg3 Nh5 21.Qc7+– Qd5? 22.Be4 (22.Be4 Qg5 23.Ba8 Bb5 24.Rfe1+–; 22.Na7 Bc5 23.Nab5 Bb5 24.Bb5 Bd4 25.Bd4 Qd4 (25...Qb5?! 26.Rfb1 Qd5 27.Qc5–/+) 26.Kh1 Re5–+) 1–0. Wall,Bill – Dinar, internet, 2005.

4.Nf3 Nf6 5.Nc3 =.

4.f4 Bg7 5.fe5 de5 6.Nf3 Nc6 7.b5 Nd4 8.e3 Nf3 9.Qf3 Ne7 10.Nc3 0–0 11.Bd3 f5 12.Bc4 Kh8 13.0–0 e4 (13...Qd2?? 14.Rad1 Qc2 15.Rf2+–) 14.Qg3 Qd2?? (14...a6 15.Rab1 b6+= (15...Qd2?? 16.Ne4 Qd7 17.ba6 Bb2 18.Rb2+–)) 15.Ne4+– Qc2 (15...Qd7 16.Bg7 Kg7 17.Qe5 Kh6+–) 16.Bg7 Kg7 17.Qe5 Kh6 18.Qe7 Bd7 19.Rf4 g5 20.Qg5# 1–0. Janek – Freddie, internet, 2016.

4.e3 Bg7

5.Nc3 Nf6 =.

5.c4 Nd7 6.Qc2 b6 (6...Ngf6 7.Nc3=) 7.Nf3 Bb7 8.Be2 f5 9.d4 e4 10.Nfd2 Qg5 11.Bf1 (11.0–0 Ngf6 12.Nc3+=) 11...Ba6 (better is 11...Ngf6!? 12.Nc3 0–0+=) 12.Qa4 (better is 12.Ne4 Qe7 13.Nec3+/–) 12...Bc8? (better is 12...Bb7 13.Nc3 a5=) 13.Qc6+– Rb8 14.Qc7 Qe7 15.Qa7 (15.Nc3!? Ngf6 16.Nb5 0–0 17.Nd6 Qe6+–) 15...f4 16.Nc3 fe3 17.fe3 Qh4?? (better is 17...Ngf6 18.Be2 0–0+–) 18.g3 Qg5 19.Nd1 (better is 19.Nde4 Qe3 20.Be2+–) 19...Ngf6 20.d5?? (better is 20.Bh3 0–0 21.0–0+–) 20...0–0+/– 21.Qa4?? (better is 21.Bg2 Rb7 22.Qa4+=) 21...Ne5–/+ 22.Qb3 (22.Be5 Qe5 (worse is 22...de5 23.Qb3+–) 23.Rc1 Bd7–/+) 22...Bg4 (better is 22...Nf3!? 23.Nf3 ef3–/+) 23.Be5+= Qe5 (worse is 23...de5 24.Bg2 Bd1 25.Rd1+–) 24.Ra2 Nh5 (24...Bh6 25.Bg2 Bd1 26.Kd1–/+) 25.Rg1= Qf5 (25...Nf6 26.Nf2=) 26.h3 (26.Bg2 Bd1 27.Kd1 Rbe8+=) 26...Bh3 (better is 26...Bd1!? 27.Kd1 Qe5+=) 27.Bh3+= Qh3 28.Ne4 Be5 The pressure on the isolated pawn grows 29.Rag2 Rbe8 30.Ndf2 Qd7 31.g4 Nf6 32.Nf6 Bf6+= 33.g5 Bd4 Attacking the backward pawn on e3 34.Nd1 Be3 35.Ne3 Re3 36.Qe3 Re8 37.Qe8 Qe8 38.Re2 Qc8 39.Rf1 h6 40.gh6 Qg4 41.Rh1 Qg3 42.Kd2 Qf4 43.Kd1?? Qd4–+ 44.Kc2 Qc4 45.Kd2 Qd5 46.Kc3 Qh1 47.Rd2 Qc6 48.Kb3 Kh7 0–1. Rolka,Anna – Binkowska,Agata, Mistrzostwa Miedzywojewodzkie Juniorek Poland, 2012.

5.c4 Nd7 6.Nc3 Nh6 (6...Ngf6 7.Nf3=) 7.Qc2 (7.Nf3 0–0=) 7...0–0 8.Nf3 f5 9.Be2 Nf7 (9...e4 10.Nd4 Ne5 11.f4=) 10.h4 (10.0–0 e4 11.Nd4 Nb6+=) 10...a5 (10...e4 11.Nd4 Nde5 12.h5=) 11.e4 (11.h5 g5+=) 11...f4 (11...Nf6 12.d4=+) 12.h5 g5 13.d3 ab4 14.ab4 Ra1 15.Ba1 c6 16.Qa2 Qe7 17.Bb2 g4 18.Nd2 Nf6 19.Bd1 Be6 20.Bb3 Ng5 21.h6 Bh8 22.Qa7 Rd8 23.b5= Qf7 24.Kd1 d5 25.Qa5 Qd7 26.bc6 bc6 27.cd5 cd5 28.Bd5 Nd5 29.ed5 Bd5 30.Nd5+= Qd5 31.Qd5 Rd5 32.Rh4 Bf6 33.Rg4+= Kf7 34.d4 ed4 35.Rf4 Kg6 36.Ne4 Ne4= 37.Re4 Kh6 38.Kd2 Rg5 39.g3+/– Rf5 40.f4 Kh5 ˝–˝. Vogel,Wolfgang – Ullrich,Juergen, M214D BdF, 1997.

5.c4 Nd7 6.d4 Ngf6 =.

5.c4 f5 6.Nf3 Nf6 7.d4 e4 8.Nfd2 Qe7 9.Nc3 0–0 10.g3 c6 11.Be2 Na6 12.b5 Nc7 13.bc6 bc6 14.a4 a5 15.Ba3 Bd7 16.Rb1 Na6 17.Nb3 Nb4 18.c5+= d5 19.Na5 Nd3 20.Bd3 ed3 21.Nb7 Ne4 22.Qd3 Nc3 23.Qc3 f4 24.Nd6 fe3 25.Qe3+= Qf6 26.0–0 Bh3 27.Rfd1 Bh6 28.Qe1?? Ra4 29.Bc1?? Bc1 30.Rbc1?? Rd4 31.Qe2?? Rd1 32.Rd1=+ Qf3 33.Qf3 Rf3 34.Re1 Rc3–/+ 35.f4 Rc5 36.Re8 Kg7 37.Re7 Kg8 38.Re8= Kg7 39.Re7 Kf6 40.Rh7= Bf5 41.Ne8 Ke6 42.Nc7 Kd6 43.Ne8 ˝–˝. Kutuzov,D – Janse,P, III Open Calvia ESP, 2006.

5.c4 Nf6 6.Nc3 +=.

5.c4 Nf6 6.Be2 =+.

5.Bc4 Ne7 6.Ne2 0–0 7.0–0 d5 8.Ba2 Bg4 9.f3 Be6 10.Nbc3 c6 11.Ng3 Nd7 12.Na4 b6 13.Qe2 h5 14.Qf2 Qc7 15.Nc3 Qd6 16.Nge2 a5 17.ba5 Ra5=+ 18.a4 Rfa8 19.Bb3 Qc7 20.Ba3 Nc5 21.Rfb1 Nb7 22.Bb4 R5a6 23.Ra2? Nd6?? 24.Bd6 Qd6 25.Rab2 Bd7 26.f4 c5 27.Nb5 Bb5–/+ 28.ab5 Ra5 29.c3 ef4 30.Rc2?? fe3–+ 31.de3 Nf5 32.Rd2 Ra1 33.Rbd1? Rd1 34.Rd1 0–1. Otte,Marco – Torn,Bert, Wag.Intcomp, 1997.

5.Nf3 (--> 1.b4 e5 2.a3 g6 3.Bb2 Bg7 4.Nf3 d6 5.e3).

3.a4 Be7

4.Nf3 Nf6

5.b5 0–0

6.Nc3 c6 7.e4 cb5 8.ab5= Bd7 9.Be2 a6 10.0–0 a5 11.d4+/– ed4 12.Qd4 b6? 13.Nd5+– Be6 14.Nb6 Ra7 15.Bc3 Rb7 16.Ba5 Ra7 17.c4 Nbd7 18.Nd5 Qa8 19.Ne7 Kh8 20.Nc6 Ra5 21.Ra5 Qb7 22.Ng5 h6 23.Ra7 Qc8 24.Ne6 fe6 25.Qd6 Ne4 26.Qd7 Qd7 27.Rd7 Nc3 28.Bg4 Ra8 29.b6 (29…Ra6 30.b7+–) 1–0. b4_player (2160) – piratov13 (1610), GameColony.com, 2002.

6.e3 Bg4 7.Be2 e4 8.Nd4 Be2 9.Qe2 d5 10.f3 ef3 11.Qf3 Ne4 12.0–0 Bf6 13.d3 Nd6 14.Qd5+/– Re8 15.Qf3 Qe7 16.Nc3 Qe3? 17.Qe3 Re3 18.Rf6 gf6 19.Nd5 Nf5 20.Nf6 Kf8 21.Nf5 Re2 22.Ba3 c5 23.bc6 Re7 24.Be7 1–0. b4_player (2160) – piratov13 (1615), GameColony.com, 2002.

6.Nc3 e4

7.Nd4 c5 8.bc6 Nc6 9.Nc6 bc6 10.Rb1 Rb8 11.e3 Rb4 12.Be2 Be6 13.f3 =+.

7.Nd4 c6 8.e3 d5 9.bc6 Nc6 10.Nc6 bc6 11.Be2 Rb8 12.Rb1 Rb4 13.0–0 =+.

7.Nd4 d5 8.e3 c5 9.bc6 Nc6 10.Nc6 bc6 11.Be2 Bd6 12.Rb1 Rb8 13.0–0 =+.

7.Nd4 Bd7 8.e3 c5 9.bc6 Nc6 10.Nc6 bc6 11.Rb1 Rb8 12.Be2 Rb4 13.f3 =+.

7.Ng1 a5 8.e3 d5 9.Nge2 Bd6 10.Nd4 Be5 11.Be2 Re8 12.0–0 Qd6 13.Ba3 =.

7.Ng1 a6 8.e3 ab5 9.ab5 Ra1 10.Qa1 Nbd7 11.Nge2 Nb6 12.Ng3 d5 13.d3 =+.

7.Ng1 c6 8.e3 d5 9.Be2 a6 10.f3 b6 11.d3 ed3 12.Qd3 Bc5 13.Rd1 –/+.

7.Ng1 d5 8.e3 c5 9.d3 Be6 10.de4 de4 11.Qd8 Rd8 12.Nge2 Bd6 13.Rd1 =.

7.Ng1 Qd7 8.e3 d5 9.Nge2 a6 10.Nf4 Rd8 11.f3 Bc5 12.Nce2 Qe7 13.Nd4 =+.

7.Ng1 Bd7 8.d3 d5 9.de4 de4 10.e3 Bb4 11.Bc4 Qe7 12.Nge2 Rd8 13.Qb1 =+.

7.Ng1 Nbd7 8.e3 d5 9.Nge2 Bd6 10.Nd4 Be5 11.Be2 Nb6 12.Nb1 Re8 13.a5 =+.

7.Ng1 Be6 8.e3 c5 9.Nge2 d5 10.Nf4 Bg4 11.Be2 Be2 12.Nce2 Nbd7 13.0–0 =.

7.Ng1 Re8 8.e3 d5 9.Nge2 c5 10.Ng3 Bd6 11.d4 ed3 12.Qd3 d4 13.Nce2 =+.

7.Ng1 Bf5 8.e3 d5 9.Nge2 c5 10.Ng3 Bg4 11.Be2 Be2 12.Qe2 Bd6 13.f4 =.

7.Ng1 Bg4 8.f3 Bf5 9.e3 d5 10.Nge2 ef3 11.gf3 c5 12.Ng3 Be6 13.a5 =+.

3.a4 Nf6

4.a5 Be7 5.c4 0–0 6.d4 Nc6 7.b5 Nd4 8.Bd4 ed4 9.Nf3 c5 10.bc6 bc6 11.Qd4 d5 12.e3 Bb4 13.Nc3?? Ba5 14.c5?? Ne4 15.0–0–0 Bc3 16.Qa4 Qf6 17.Bd3 Nf2 18.Rhf1 Bb2 19.Kd2 Qc3 20.Ke2 Nd1 21.Rd1 Qc5 22.e4 Re8 23.e5 Bg4! 24.Qg4 Be5 25.Kf1 g6 26.g3 Qb6 27.Rb1 Bb2 28.Bf5 Qb5 29.Kg2 Re2 30.Kh3 Kh8 31.Ng5 Qc4 32.Qc4 dc4 33.Bd7 Rf8 34.Bc6 c3 35.Ba4 c2 36.Bc2 Rc2 37.Rd1 Rc5 38.Ne4 Rh5 39.Kg2 Re8 40.Nd6 Re2 41.Kf3 Re7 42.h4 Rd7 43.g4 Rh4 44.Kg3 g5 45.Rd5 f6 46.Kf3 Be5 47.Nf7 Rf7 48.Ke4 Rg4 49.Kf5 Rd4 50.Rc5 Rc7 51.Rb5 g4 52.Rb8 Kg7 53.Re8 g3 54.Re7 Re7 (54...Kf8 55.Rc7 Bc7 56.Ke6 f5 57.Kf6 g2 58.Kf5 g1Q 59.Ke6 Qg6) ˝–˝. ifairclough – quikeagle, net–chess.com, 2001.

4.c4 Be6 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.a4).

4.c4 Be7 5.Nf3 0–0 6.Nc3 Nc6 7.b5 Nb4 8.d4 ed4 9.Nd4= Re8 10.e3 Ng4 11.Be2+= Ne5 12.0–0 Bf6 13.f4 Ng6 14.f5 Ne5 15.Rf4 Bd7 16.Ne4+= a5 17.g4 h6 18.h3 Bg5 19.Ng5= Qg5 20.Qf1 c5 21.Nf3= Nf3 22.Bf3 Re3 23.Bb7= Rae8 24.Rf3 Re2 25.Bc3 R2e3 26.Bb2 Re2 27.Bc3 R2e3 28.Bb2 (better is 28.Rd1+/–) ˝–˝. Wall,Bill – Begun, internet, 2005.

4.d4 ed4 5.Bd4 Be7 6.e3 c5 7.bc5 dc5 8.Bb5 Bd7 9.Bb2 0–0 10.Nc3 Nc6 11.Nf3 a6 12.Be2 Qa5 13.0–0 Rad8 14.Qb1 Nb4 15.e4 Bc6 16.e5 Nfd5 17.Ne4? Nf4–+ 18.Ng3 Ne2 19.Ne2 Qc7 20.Rd1 Bf3–+ 21.gf3 Qc6 22.Ra3 Rfe8 23.Bc3? Qf3 24.Bb4?? Qg4 25.Ng3?? cb4 26.Rad3 Rd3 27.cd3 Bc5 28.Qb2?? Qd1 (28...Qd1 29.Kg2 Qd3–+) 0–1. dixi82 – Skean Du, ChessWorld.net, 2006.

4.e3 Nc6 5.b5 Nb8 6.d4 ed4 7.Bd4 Be7 8.Nf3 0–0 9.Bd3 Bg4 10.0–0 Nbd7 11.Nbd2 Ne5 12.Be2 Nfd7 13.Ne5+/– Be2 14.Nf7 Rf7 15.Qe2 Bf6 16.c4 Bd4 17.ed4 Qf6 18.Qe4 Qf4 19.Rad1 Rff8 20.Qb7+– Qd4 21.Qc7 Ne5 22.Qb7 Rfd8 23.Ne4 Qc4 24.Nd6 Qc2 25.Qd5 (25…Kh8 26.f4+–) 1–0. orane (2005) – luangprabang, Live Game Caissa's Web, 2004.

4.e3 Be6 5.Nf3= Be7 6.Be2 0–0 7.0–0 Nd5 8.b5 f5 9.c4 Nb4 10.a5+= e4 11.Nd4 Qd7 12.Bc3+/– Nd3 13.Bd3 ed3 14.Qf3 c6 15.a6+– b6? 16.bc6 Qc8 17.c7! Nd7 18.Ne6 (18…Rf7 19.Qd5+–) 1–0. market (2170) – NN, GameColony.com, 2002.

4.e3 g6 5.d4 ed4 6.Bd4 Bg7 7.b5 0–0 8.Nf3 Bf5 9.Bd3 Bd3 10.Qd3 Nbd7 11.0–0 Re8 12.a5 Ne5 13.Qe2 Qd7 14.Rd1 Qg4 15.a6 Nf3 16.Qf3 Qf3 17.gf3 b6 18.Nc3 Re7 19.Bf6+/– Bf6 20.Nd5 (20…Ba1 21.Ne7 Kf8 22.Ng6 (< 22.Ra1 Ke7 23.Ra3 Re8=) 22...hg6 23.Ra1+/–) 1–0. orane (2005) – ClintonStreet, Live Game Caissa's Web, 2004.

4.Nf3 Bg4 5.h3 Bh5 6.Nc3 Nbd7 7.a5 a6 8.g4 Bg6 9.Bg2 h6 10.Nh4+= Bh7 11.Bb7 Rb8 12.Ba6 Ne4 13.Nf5 Nf2 14.Kf2 Qf6?? 15.Nd5+– Qg5 16.Nc7 Kd8 17.Nd5 Bf5 18.gf5 Qf5 19.Kg3 Nf6+/– 20.Nf6 gf6?? 21.Qf1+– Rg8 22.Kh2 Qc2 23.Bc3 Be7 24.Qb1 Qb1 25.Rhb1 d5 26.b5 Bd6 27.e3 d4 28.Bb4 Ke7 29.e4 f5 30.Bd6 Kd6 31.ef5 Rg5 32.Rf1 Rbg8 33.Bb7 e4 34.Be4 Ke5 35.Rfe1 Kf4 36.a6 d3 37.a7 Rg3 38.Ra4 R8g5 39.Bd3 Kf3 40.Rf1 1–0. b4_player (1970) – CrownPrinceAbdullah (1945), GameColony.com, 2002.

4.e3 Be7

5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.a4).

5.d4 ed4 6.Bd4 Nc6 7.Bb5 0–0 8.Bc6 bc6 9.Nf3 a5 10.ba5 Ra5 11.Qd2 Rh5 12.0–0 Ba6 13.Rd1 c5 14.Bf6= Bf6 15.c3 Qa8 16.Ra3 c4=+ 17.Qc2 Bb7 18.Nbd2 Rh6 19.a5 Rg6 20.Rb1 Bf3 21.Nf3+= Qf3? 22.Qg6!+– Qf2 23.Kf2 hg6 24.a6 Ra8 25.a7 Bc3 26.Rb8 (26…Kh7 27.Ra8+–) 1–0. market (2235) – fchulo (1735), GameColony.com, 2002.

5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.Nf3 Be7 5.a4).

4.Nf3 Be7

5.b5 a6 6.Nc3 ab5 7.ab5 Ra1 8.Ba1 0–0 9.e4 c6 10.d4 cb5 11.Bb5 Bd7 12.Bd7 Nbd7 13.Kf1 Qa5–/+ 14.g4 ed4 15.Nd4 g6 16.f3 Nb6 17.Nb3 Qb4 18.Qd4 Qd4 19.Nd4 Nc4 20.Ke2 b5 21.Nc6+– Bd8 22.Nb5 d5 23.Nd8 Rd8 24.Bf6 Rb8 25.Ra1 Kf8 26.ed5 Nd6 27.Nd6 (27…Kg8 28.c4+–) 1–0. MT – guest829, ICC, 2004.

5.b5 b6 6.Nc3 h6 7.e4 Bg4 8.h3 Bh5 9.d4 Nbd7 10.Be2 Bg6 11.Bd3 0–0 12.0–0 Nh5 13.Nd5+– Nhf6 14.de5 Nd5 15.ed5+– Bd3 16.Qd3 Nc5 17.Qf5 de5 18.Ne5 Qd6 19.Nc6 Bf6 20.Bf6 Qf6 21.Qf6 gf6 22.a5 Nd7 23.Rfe1 Ne5 24.Ne5 fe5 25.Re5 Rfe8 26.f4 f6 27.ab6 fe5 28.bc7 ef4 29.d6 Kf7 30.d7 Rg8 31.Ra7!! Ra7 32.d8Q (32.d8Q Rd8 33.cd8Q+– (< 33.cd8N Kf6=+; < 33.cd8B Rd7 34.Ba5 Rd5–/+)) 1–0. pierre – Zuzu, CheeeHere.com, 2005.

3.b5 a6

4.a4 c6 5.c4 ab5 6.ab5 Ra1 7.Ba1 Nf6 8.e3 Be7 9.Nf3 Bg4 10.Be2 0–0 11.0–0 Nbd7 12.d4 Qc7 13.Nbd2 Rc8 14.h3 Bh5 15.Re1 cb5=+ 16.cb5 e4 17.Nh2 Be2 18.Qe2 ˝–˝. Schwichtenberg,Juergen (2000) – Eppel,Werner, EU–ch Seniors, 2005.

4.a4 Ne7 5.Nf3 Bg4 6.e3 c6 7.h3 Bd7 8.c4 Ng6 9.Nc3 Be7 10.Be2 f5 11.d3 0–0 12.e4 (better is 12.0–0!?=) 12...Nf4 13.0–0 fe4 14.de4 Qe8 15.Bc1 Ne2 16.Ne2 Bh3! 17.gh3 Rf3 18.Ng3 Rf6 19.Bg5 Rg6 20.Be7 Qe7 21.Kh2 Nd7 22.Nf5 Qg5 23.Rg1? (better is 23.Qf3!?–/+) 23...Qf4–+ 24.Ng3 Qf2 25.Rg2 Qf4 26.Qf1 Nf6 27.Qf4 (27.bc6 bc6 28.Qf4 ef4–+) 27...ef4 28.Nf5 Rg2 29.Kg2 Ne4 30.bc6 bc6 31.Ne7 (31.Rd1 Rf8 32.Ne7 Kf7 33.Nc6 Rc8–+) 31...Kf7 32.Nc6 Rc8 33.Re1 f3! (33...Rc6?! 34.Re4 g5 35.Kf3–+) 34.Kf3 Nd2 (better is 34...Ng5!? 35.Kg4 Rc6 36.Kg5 Rc5 37.Kf4 Rc4 38.Kg3 Ra4 39.Rf1 Ke6 40.Re1 Kd7 41.Rf1–+) 35.Kg4?? (35.Ke2 Nc4 36.Nb4–+) 35...Rc6 0–1. Kumar Thakur,Saran – Surendran,N (2105), IND–ch U17, 2009.

4.ba6 Ra6 5.e4 Nc6?? 6.Ba6+– ba6 7.c3 Nf6 8.Qa4 Qd7 9.d3 d5 10.ed5 Qd5= 11.Nf3 Be7 12.0–0 0–0 13.Ba3 Ba3+= 14.Na3 Bb7 15.c4 Qd3+= 16.Rad1 Qg6 17.Rb1 Ba8 18.Nh4? Qg5?? 19.Nf3= Qg6 20.Qa6?? Nd4–+ 21.Nh4 Nh5?? (better is 21...Qg4 22.f3 Qh4–+). pinecrest1981 – MMA, Live Game Caissa's Web, 2006.

4.ba6 Na6 5.e4 Nf6 6.Ba6 Ra6 7.d3 Be6 8.Ba3 Be7 9.c4 0–0 10.Qc1 Qa8 11.Ne2 Qa7 12.0–0 Ra8 13.Bb2 Ra2 14.Ra2 Qa2 15.Nec3 Qa7 16.Nb5 Qb6–+ 17.N1c3 c6 18.Na3 h6 19.h3 d5–/+ 20.cd5 cd5 21.ed5 Nd5 22.Nd5 Bd5 23.Nc4 Bc4 24.dc4 f6 25.Kh1? Bc5 26.Qc2–/+ Ra2 27.Rb1 Bf2?? 28.Qf5?? Bc5 29.h4? Rb2 30.Rb2 Qb2 31.Qc8?? Bf8 32.Qb8 Qc1 33.Kh2 0–1. pinecrest1981 – FrenchFried, Live Game Caissa's Web, 2006.

4.c4 c6 5.a4 ab5 6.cb5 cb5 7.ab5 Ra1 8.Ba1 Nf6 9.Qa4 Nbd7 10.e3 Be7 11.Bc4 Nb6–/+ 12.Qb3 Nc4 13.Qc4 Be6 14.Qd3 0–0 15.Ne2 Qb6 16.0–0 Rc8 17.Nbc3 Bc4 18.Qb1 e4 19.Rc1 Bd3 20.Qb2 Nd7?? 21.Nd5 Rc1 22.Nc1 Bf6 23.Qf6 gf6 24.Nb6 Nb6 25.Bf6 Bb5=+ 26.f3 d5 27.Nb3 ef3 28.gf3= Nc4 29.Kf2 Ba4 30.Nc5+= Bc6 31.Ke2 h6 32.d3 Nd6 33.Be5 Ne8 34.e4 f6 35.Bf4 Kh7 36.Ne6 de4 37.fe4 b5 38.Kd2 Kg6 39.Kc3 Bd7?? 40.Nd4 Ng7 41.Kb4 Ne6 42.Bd6?? Nd4–+ 43.Bc5 Nf3 44.h4 Nh4 45.d4 Nf3 46.d5 h5 47.Bf2 h4 48.Bh4 Nh4 49.Kc5 Nf3 50.Kb4 Ne5 51.Kc5 Kg5 52.Kb4 Kf4 53.Kc5 Ke4 54.Kb4 Kd5 55.Kb3 Kc5 56.Kc3 b4 57.Kb3 Be6 58.Kb2 f5 59.Kb1 f4 60.Kc2 f3 61.Kd2 b3 62.Ke3 b2 63.Ke4 b1Q 64.Ke5 Qf5# 0–1. Guest1851210 – Fredek (2065), Freundschaftspartie, 5m + 0s, 2006.

4.a4 ab5

5.ab5 Nf6?? 6.Ra8+– Bd7 7.e3 Be7 8.c4 0–0 9.Nf3 c6 10.Be2 Qb6 11.Nc3 cb5 12.cb5 h6 13.0–0 e4 14.Nd4 Be6 15.Ne6 fe6 16.d3 ed3 17.Bd3 d5 18.Ne2 Bd6 19.Nd4 e5 20.Nf5 Nbd7 21.Rf8 Bf8 22.Qa1 e4 23.Be2 Nc5 24.Bd4 Qc7 25.Rc1 Qb6 26.Qa8 Nfd7 27.Ne7 Kf7 28.Nd5 Qd6 29.Bc4 Nd3 30.Nf4 Ke7+– 31.Nd3 ed3 32.Bd3 Qd5 33.Bc4 Qf5 34.Qb7 Ke8 35.Qc8 Ke7 36.Bc5! Qc5 37.Qc5 Nc5 38.b6 Kd7 39.Bd5 Kc8 40.Ra1 Bd6 41.e4 Be5 42.Ra5 Nb7 43.Ra8 (43.Ra8 Kd7 44.Bb7+–) 1–0. AntoniusBlock – helmisflorin, internet, 2009.

5.ab5 Ra1

6.Ba1 c6 7.e3 Bd7 8.d4 ed4 9.Bd4+= d5 10.Nf3 Nf6 11.Be2 cb5 12.Nc3 Bb4 13.0–0 Bc3 14.Bc3 Bc6 15.Qa1 Nbd7 16.Bb4 Ne4 17.Nd4 Qb8 18.Nf5+– Qe5? 19.Qa8 Qb8 20.Ra1 g6 21.Ne7 (21.Ne7 f6 22.Nc6 Qa8 23.Ra8 Kf7 24.Nd8 Rd8 25.Rd8+–) 1–0. Taulien,Hans_Juergen (2350) – Blauhut,Holger (2360), remoteschach.de, 2003.

6.Ba1 c6 7.e4 Nf6 8.Nc3 d5 9.ed5 cd5 10.Nf3 Bd6 11.h3 0–0 12.Be2 Bf5 13.0–0 d4 14.Na4 Qc7 15.d3 Nbd7 16.c3=+ dc3 17.Bc3 Nd5–/+ 18.Bd2 h6 19.Qb1 Ra8 20.Rc1 Qd8 21.Nc3 N5b6 22.Ne4= Ba3 23.Rc2 Be6 24.Bc1 Bf8 25.Ned2 Ra4 26.Nc4? Nc4–/+ 27.dc4 Bf5 28.Qb3 Bc2 29.Qc2 Ra1 30.Kh2 e4! 31.Nd2 Nf6 32.Nb3–/+ Qc7 33.g3 Ra8 34.Bb2 Be7 35.Bf6=+ Bf6 36.Qe4 Qe7 37.Bf3 Ra3 38.Nd2 Ra2 39.Qd3 Qd8 40.Bd5=+ Qe7 41.Ne4 Kh8 42.h4 Ra3=+ 43.Qe2 Be5 44.Qh5 Kg8 ˝–˝. Kleist,Werner – Jobski,Werner (1620), Bad Sooden Allendorf Senior op, 2004.

6.Ba1 d5 7.Be5 Bd7 8.Nc3 Nf6 9.Bf6+– gf6 10.Nd5 Bb5 11.e4 Bf1 12.Kf1 Bg7 13.Qg4 0–0 14.Nf3 Kh8 15.g3 Nc6 16.d4 Qd6 17.c3 Na5 18.Nh4 Qe6 19.Nf5 Rg8 20.Nde7 Qc4 21.Kg2 (21.Kg2 Qe6 22.Ng8+–) 1–0. pierre – Tobica, internet, 2008.

6.Ba1 Be6 7.e3 Qd7 8.c4 Nf6 9.Nc3 Be7 10.Nf3 0–0 11.Ng5 h6 12.Ne6 Qe6 13.Be2 c6 14.0–0 cb5 15.cb5 Nfd7 16.Qb1 g6 17.Bc4?? Qg4?? 18.Be2 Qe6 19.Ne4 d5= 20.Ng3 h5 21.h3 Nf6 22.d3 Nbd7 23.e4 d4 24.Bf3 Qb6 25.Ne2 Bb4?? 26.Nc1 Qb5 27.Na2+/– Qa5? 28.Nb4+– Nc5 29.Nd5 Nd5 30.ed5 Qa6 31.d6 Nd3? 32.Bb7 Qd6 33.Qd3 Rb8 34.Be4 f5 35.Bf5 gf5 36.Qf5 (36.Qf5 Ra8 37.Rd1+–) 1–0. OutOfBounce – Agame, Live Game Caissa's Web, 2005.

6.Ba1 Be6 7.e3 Be7 8.Nf3 h6 9.Be2 Nf6 10.0–0 0–0 11.c4 Nbd7 12.d4 ed4 13.Nd4 Nc5 14.Ne6 fe6= 15.Nc3 Nfe4 16.Ne4+= Ne4 17.Qd4 Nf6 18.Bg4 e5 19.Be6 Kh8 20.Qa7 Qa8 21.Qa8 Ra8 22.g3 b6 23.f4+/– ef4 24.ef4 Rf8 25.Re1 Bd8 26.Kf2 Ng8 27.Bd7 Nf6 28.Bc6 Ng4 29.Kg2+– Nf6 30.Re6 Rf7 31.Kf3+– Rf8 32.g4 Ng8 33.Kg3 Kh7 34.Be4 Kh8 35.h4 Nf6 36.Bc6 Kg8 37.Bf6 Bf6 38.g5 hg5 39.hg5 Bd8?? 40.g6 Bf6 41.Bd5 Kh8 42.Re1 Bh4 43.Kh4 Rf4 44.Kg5 (44.Kg5 c6 45.Re8 Rf8 46.Rf8#) 1–0. Blasius – Bahn,D, 1987.

6.Ba1 f5 7.e3 Nf6 8.Bc4 d5=+ 9.Bb3 Bd6 10.d3 Bd7 11.Nc3 c6=+ 12.bc6 bc6 13.Nf3 Qc7 14.g3 0–0 15.0–0 e4 16.de4 fe4–/+ 17.Nd4 c5?? 18.Ndb5+– Qc6 19.Nd6 Qd6 20.Nd5 Kh8 21.Nf6 Qd1 22.Rd1 gf6 23.Rd6 Kg7 24.Bb2 Kg6 25.Ba3 Rc8 26.Bd5 Kf5 27.Rb6 Ke5? 28.c4 f5?? 29.Bb2# 1–0. mic (2100) – chessgirlwi (2100), net–chess.com, 2008.

6.Ba1 Bf5 7.d3 Bd7 8.c4 Nf6 9.e3 c6 10.bc6 bc6 11.Be2 Be7 12.Nf3 0–0 13.0–0 c5 14.Nc3 Nc6 15.d4 cd4 16.ed4 ed4 17.Nd4 Nb4 18.Bf3 Qc7 19.Re1 Re8 20.Nd5 Nfd5 21.cd5 Qc5 22.h3 Bh4 23.Re8 Be8 24.g3 Bd8 25.Qe2 Kf8 26.Nf5 Qc1 27.Qf1 Qf1 28.Kf1 Bd7 29.Bg7 Kg8 30.Bc3 Bf5 31.Bb4 Bh3 32.Bg2 Bg2 33.Kg2 Be7 34.g4 Kg7 35.Kf3 Kf6 36.Ke4 Kg5 37.f3 Bf8 38.Bd2 Kh4 39.Bf4 Kh3 40.Bc1 Be7 41.Bd2 Kg3 42.Bf4 Kh3 43.Bh6 Kg3 44.Bg7 Kg2 45.Bc3 Kf2 46.Bd4 Kg3 47.Bb6 Kg2 48.Ba5 Kg3 ˝–˝. Taulien,Hans_Juergen (2350) – Brueske,Thomas (2355), RSS5D pro–5 remoteschach.de, 2003.

6.Ba1 g6 7.d4= Qe7 8.e3 Bg7 9.c4 b6 10.d5 Nd7= 11.Qa4 Ngf6=+ 12.Nd2 Nc5 13.Qc2 Bf5 14.Qa2 0–0 15.Ngf3 Rb8 16.Nh4 Bd3 17.Bd3 Nd3–/+ 18.Ke2 e4 19.h3 Nd5 20.Qa7 Rf8 21.Bg7 Kg7 22.cd5 Qh4–+ 23.Qa1 Kg8 24.g3 Qh5 25.g4 Qd5 26.Qa4 Nf2! 27.Re1 Nh3 28.Ne4 Qe6 29.Kf3 f5 30.gf5 Qf5 31.Ke2 Qg4 32.Kd2 Qe6 33.Rh1 Nf2 34.Rh4 Ne4 35.Re4 Qd5 36.Ke2 Qh5 37.Kd3 Qf5 38.Kc3 Qc5 39.Kd3 d5 40.Rd4 Rd8 41.Qb3 Kg7 42.Qb2 Kg8 43.Qb3 Qd6 44.Rf4 Rf8 45.Rd4 Rf5 46.Qa2 c5 47.bc6 Qc6 48.e4 Qb5 49.Ke3 Re5 50.Qa8 Qe8 51.Qe8 Re8 52.Rd5 Re7 53.Rb5 Rb7 54.e5 Kf7 55.Kf4 h6 56.Kg4 Re7 57.Kf4 Re6 58.Rd5 Ke7 59.Rb5 Rc6 60.Rb4 Kd7 61.Rb5 Rc4 62.Kf3 Rc5 63.Rb6–/+ Re5 64.Rg6 ˝–˝. Niekisch,Dirk – Spillecke,Thomas, DVMi U15 Fredeburg, 1994.

6.Ba1 Nf6

7.c4 c6 8.e3 cb5 9.cb5= Be7 10.Nf3 0–0=+ 11.Be2 e4 12.Nd4= Bd7 13.0–0 d5 14.Nc3 Bb4 15.Qb1 Bc3 16.Bc3+= Qc8 17.Rc1 Qe8? 18.Bb4+– Bb5?? 19.Bb5 Nbd7 20.Bf8 Kf8 21.d3 g5 22.de4 Ne4 23.Qb4 Kg7 24.Nf5 Kg6 25.Ng3 Nf2 26.Kf2 Qe5 27.Bd7 Qf6 28.Kg1 h5 29.Rf1 Qa6 30.Qe7 b5 31.Qe5 (31.Qe5 f5 32.Bf5 Kf7 33.Bd3 Kg8 34.Qe8 Kg7 35.Qf8#; 31.Qf7 Kh6 32.Nf5#) 1–0. OutOfBounce – ERIC1, Live Game Caissa's Web, 2005.

7.c4 Bf5 8.e3 Nbd7 9.Be2 Qa8 10.Nc3 Nc5 11.d4 ed4 12.ed4 Nd3 13.Bd3 Bd3 14.Qd3 Qa1 15.Nd1 Qa5 16.Nc3 Qa1 17.Nd1 ˝–˝. Mallmann,Bernd (1885) – Barmbold,Jens (2200), Saarlouis op 7th, 2004.

7.d4 e4 8.d5 =+.

7.e3 c5 8.c4 g6 9.Ne2 Bg7 10.Ng3 Be6 11.Be2 0–0 12.0–0 Ne8 13.d4 ed4= 14.ed4 f5 15.d5 Ba1 16.de6 Nf6 17.Nd2 Bc3 18.Bf3 Qe7 19.Bd5 Nd5 20.cd5 Re8 21.Nc4 Qc7 22.Qc1 Bf6 23.Re1 Kg7 24.Qf4 Be7? 25.Nf1 Bf8 26.Nfe3 Kh8 27.h4 Be7 28.g3 Rf8 29.Kg2 Kg7 30.Rh1 h5 31.Ra1 b6 32.Ra3 Rd8 33.Nf1 Qb7 34.Qd2 f4 35.Rf3 Rf8 36.gf4 Nd7 37.ed7 Qd7 38.Nfe3 Qb5 39.Qb2?? Qb2+= 40.Nb2 b5 41.Kg3 Bf6 42.Ned1 c4= 43.Re3 Rc8 44.Re6 c3 45.Nd3 c2 46.Ne3 Rc3 47.Rd6?? c1Q 48.Nc1+/– Rc1 49.Rc6 Rc6? 50.dc6+– Bd8 51.Nd5 Kf7 52.c7 Bc7 53.Nc7 b4 54.Nd5 b3 55.Kf3 Ke6 56.Nc3 Kf5 57.Nb1 b2 58.Nc3 Ke6 59.Ke4 Kf6 60.f3 Ke6 61.Nb1 Kf6 62.Nc3 Ke6 63.Nb1 Kf6= 64.Nc3 ˝–˝. Schwichtenberg,Juergen (2005) – Kalmann,Max (1610), Hessen–ch Seniors, 2005.

7.e3 c6 8.Nf3 Bg4 9.Be2 Be7 10.0–0 Qb6 11.c4 cb5 12.cb5 0–0 13.d4 Bf3 14.Bf3= Qb5 15.Nc3 Qd7 16.Qa4 Qa4–/+ 17.Na4 e4 18.Be2 Nc6 19.Nb6 Bd8 20.Nc4 d5 21.Na3 Be7–/+ 22.Nb5 Ra8 23.h3 Ra2 24.Nc3 Ra5 25.Rb1 Nb4 26.Bf1 Nc2 27.Rb7= Ra1 28.Re7 g6 29.Rb7 h5 30.Rb5 Na3 31.Ra5 Kg7 32.Nb5 Nd7?? 33.Ra3+– Rb1 34.Nc3 Nb6 35.Nb1 1–0. tanto – octopus, net–chess.com, 2001.

7.e3 Nbd7 8.Nf3 Nc5 9.d4 ed4 10.Bd4 Bg4 11.Bc5 Bf3? 12.Qf3+/– dc5 13.Qb7 Bd6 14.Bd3 0–0 15.Nd2 Re8 16.0–0 Ng4 17.h3 Ne5 18.Rd1 Nd3 19.cd3 Qe7 20.Ra1 Qe5 21.Ra8 h6 22.Nc4 Qh2 23.Kf1 Ra8 24.Qa8 Kh7 25.Ke2 f5 26.Qd5 Kg6 27.b6 cb6 28.Nd6 (28.Nd6 Kh7 29.Qf5 Kg8 30.Qd5 Kh8 31.Qa8 Kh7 32.Qe4 Kh8 33.Qe8 Kh7 34.Nf5+–; < 28.Qd6 Qd6 29.Nd6 Kf6+–) 1–0. Taulien,Hans_Juergen (2350) – Staats,Carsten (2315), RSX9E – A00 – Sokolsky–1, 2002.

4.a4 Bd7

5.c4 c6 6.e3 Nf6 7.Nf3 g6 8.Be2 Bg7 9.d3 0–0 10.e4 Be6 11.0–0= Nbd7 12.Ng5 d5 13.Ne6 fe6 14.Qc2 d4 15.c5 Rc8 16.b6+= Qe7 17.Ba3 h5 18.Nd2 Qf7 19.Nf3 Nh7 20.Qd1 Bh6 21.Nh4 Ng5 22.Bc1 Nc5 23.Bg5 Bg5=+ 24.Nf3 Bh6 25.Ne5=+ Qf4?? 26.Ng6+– Qg5 27.Nf8 Rf8 28.Bh5 Kh7 29.Qg4 Rg8 30.Qg5 Rg5 31.Bf3 Nd3 32.h4 Rg7 33.h5 Ne5 34.Be2 Bf4 35.g3 Bg5? 36.Kh2 d3 37.Bd1 d2? 38.f4 Ng4 39.Bg4 Be7 40.Bd1 Bf6 41.e5 Be7 42.Rh1 Bb4 43.Kg2 Rg3 44.Kg3 c5 45.Ra2 (45.Ra2 Kh6 46.Bf3+–) 1–0. ZZMeB4 (1700) – pawncrusher5 (1705), caissa.com, 2007.

5.e3 Be7 6.d4 e4=+ 7.d5 c6?? 8.dc6+– bc6 9.Bg7 Bf6+/– 10.Bh8 Bh8 11.c3 Qa5 12.Ra3+– Nf6 13.Qd6 Nd5 14.ba6 Nc3 15.Qd2 Qb4 16.Rc3 Bc3? 17.Nc3 Na6 18.Ba6 Ra6 19.Nge2 c5 20.0–0 Ra4 21.Rd1 Ra7 22.Qd6 Qb3 23.Ne4 Ra6 24.Nf6 (24.Nf6 Kd8 25.Qd7#) 1–0. pierre – hris, ChessHere.com, 2006.

4.a4 Be6

5.e3 ab5 6.ab5 Ra1 7.Ba1 Nd7 8.c4 Qa8 9.Nc3= Nb6 10.d3 Qa5 11.e4 f5 12.f3 Nf6 13.Nge2 Be7–/+ 14.ef5 Bf5 15.Ng3 Be6 16.Be2 d5 17.0–0 dc4 18.dc4 Nc4 19.Bc4 Bc4 20.Re1 0–0 21.Re5 Bd6 22.Re1 Rd8 23.Kh1 c6 24.Qc1 cb5 25.Nf5=+ Bf8 26.Qg5 Re8 27.Rg1 Qb6 28.h4 Kf7 29.h5 g6 30.hg6 hg6 31.Nh6 Bh6 32.Qh6 Re5 33.g4 Qf2 34.Qf4 Re1?? 35.Qf6!?+= Ke8 36.Qh8 Kf7 37.Qh7 Ke8= 38.Qh8 Kf7 39.Qf6 Ke8= 40.Qh8 Kf7 ˝–˝. Felecan,Florin – Dovramadjiev,Tihomir (2270), EU–ch U14 Szombathely, 1993.

5.e4 Nf6=+ 6.Nc3 Qd7 7.Nf3= ab5 8.ab5 Ra1 9.Ba1 g6 10.h3 Bg7 11.Be2 0–0 12.Kf1 c6 13.d4 Qc7 14.de5 de5 15.g4 Rd8=+ 16.Qc1 Qa5 17.Qb1 Nfd7 18.Nd1 Nc5–/+ 19.c4 Nd3?? 20.Bd3+– Rd3 21.Qd3 Qa1 22.Kg2 Nd7 23.Ne3 Qa4 24.Ng5 Nc5 25.Qd8 Bf8 26.Qf6 h6? 27.Ne6+– Ne6 28.Qe5 cb5 29.Qb5 Qa2 30.Qb7 Nf4 31.Kf3 g5? 32.Qb1?? Qe2–+ 33.Kg3 Bd6 34.e5 Be5 35.Re1 Ng2 36.Kg2+– Qd2 37.Rd1 Qa5 38.Rd8! Qd8 39.Qb2?? Qa8 (39...Qa8 40.Kf1 Qh1 41.Ke2 Bb2–+) 0–1. Barrow,Aziz – Egill,ISD, Internet Section, 2004.

4.a4 Nf6

5.c4 ab5 6.ab5 Ra1 7.Ba1 Be6 8.d4 Bc4–/+ 9.de5 de5 10.Qd8 Kd8 11.Be5 Bb5 12.Bf6 gf6 13.Nf3 Bb4 14.Nbd2 Re8 15.e3 Ba4 16.Bd3 h5 17.0–0 Bd2 18.Nd2=+ h4 19.Bf5 Re5 20.Ra1 Rf5 21.Ra4 Rc5 22.Rh4= Rc1 23.Nf1 Nc6 24.Rf4 Ne5 25.h4+= Nd3?? 26.Rf6 Rc2 27.Rf7+– Rf2?? 28.Rf2 Nf2 29.Kf2 b5 30.Ke2 b4 31.Kd2 c5 32.Kc2 c4 33.Nd2 c3 34.Nb3 Kc7 35.h5 Kb6 36.h6 Kb5 37.h7 Kc6 38.h8Q Kd6 39.g4 Ke6 40.Qf8 Ke5 41.Qb4 Kf6 42.Kc3 Kg5 43.Qf4 Kg6 44.Kd4 Kg7 45.Ke5 Kg6 46.Qf6 Kh7 47.g5 Kg8 48.e4 Kh7 49.g6 Kh6 50.Kf5 Kh5 51.Qh8 1–0. nay (2190) – sburritt, net–chess.com, 2006.

5.d4 ed4 6.Bd4 ab5 7.ab5 Ra1 8.Ba1 =+.

5.e3 c5 6.Be2 ab5 7.ab5 Ra1 8.Ba1 Bf5 9.c4 Bb1 10.Qb1+= Nfd7 11.Nf3+/– g6 12.0–0 Bg7 13.d4 0–0 14.de5 Ne5 15.Rd1 Qc7 16.Ne5 Be5 17.Be5 de5 18.Qd3 b6 19.Qd6+– Qa7 20.Qe5 Qa2 21.Kf1 Qa7 22.Qd6 Re8 23.g3 h5 24.g4 hg4 25.Bg4 Re4 26.Qf6 Re8 27.Rd6 Qa2 28.Be2 Qb1 29.Kg2 Qe4 30.Qf3 Qh4 31.Rb6 Nd7 32.Rb7 Ne5 33.Qf4 Qd8 34.Bf3 Nf3 (34...Kg7+–) 1–0. Herm,Florian – Eisenhauer,Michael, Baden–ch AT1, 2003.

5.e3 Be7 6.Nf3 0–0 7.d4 e4 8.Nfd2 ab5 9.ab5 Ra1 10.Ba1 d5 11.c4 dc4 12.Bc4= Nd5 13.Ne4+/– Bf5 14.Nec3 Nb6 15.Bb3 c6 16.0–0 Qd6 17.Nd2 cb5 18.Nb5 Qg6 19.Kh1 Bd3=+ 20.Re1? Qf5?? 21.Nc3+/– Qf2?? 22.Nde4 Be4 23.Ne4 Qh4 24.Qb1 N8d7 25.Rf1 Kh8 26.Rf7 Rf7 27.Bf7 Qh6 28.Qe1 1–0. pumpkin (2250) – hadam, net–chess.com, 2008.

4.c4 ab5

5.cb5 Bd7 6.a4 c6 7.e3 cb5 8.ab5 Ra1 9.Ba1 Qa5 10.Nc3 Nf6 11.Be2 d5 12.Nf3 Bd6 13.0–0 0–0 14.d4 e4 15.Nd2 Be6 16.Nb3 Qc7 17.Nc5 Bc5 18.dc5= Qc5 19.Na4 Qe7 20.Bd4 Nbd7 21.Qc2 Ra8 22.Nc5 Nc5 23.Qc5 Qc5 24.Bc5 Ra2 25.Re1 Bg4 26.f3 ef3 27.Bf3 Bf3 28.gf3 Nd7 29.Bd4 f6 30.f4 Ra5 31.b6 Rb5 32.Rc1 Nb6 33.Bb6 Rb6 34.Rc5 Rb3 35.Rd5 Re3 36.Rb5 Re7 37.Kg2 Kf7 38.Kf3 g5 39.f5 h5 40.h3 Ke8 41.h4 Kd8 42.hg5 fg5 43.f6 Rf7 44.Rg5 Rf6 45.Ke4 Rh6 46.Rg3 h4 47.Rh3 Rh5 48.Kf4 b5 49.Kg4 Rd5 50.Rb3 Rd4 51.Kh3 b4 52.Rb1 Kd7 53.Rb2 Kd6 54.Rb3 Kc5 55.Rf3 Kc4 56.Kh2 b3 57.Rf8 b2 58.Rb8 Kc3 59.Kh3 Kc2 60.Rc8 Kd1 61.Rb8 Kc1 62.Rc8 Kd2 63.Rb8 Rd3 64.Kh4 Rd4 (65.Kg5 Kc3 66.Rb2 Kb2–+) 0–1. stoker – FREEZE, Live Game Caissa's Web, 2004.

5.cb5 Bd7 6.a4 Nf6 7.Nc3 Be7 8.e3 c6 9.Nf3 cb5 10.ab5 Ra1 11.Qa1 0–0 12.Be2 d5 13.d4 ed4 14.Nd4+= Bb4 15.0–0 Be6 16.Qb1 Bc3 17.Bc3 Ne4 18.Bb4 Re8 19.f3 Nd6 20.Bd3 Qb6 21.Bh7+– Kh8 22.Bd3 Nd7 23.Ne6 Re6+= 24.Re1 Ne5 25.Bf5 Rf6 26.Bc3?? Rf5–+ 27.Bd4 Qb5 28.Qc1 Nec4 29.Qa1 Rh5 30.Bg7 Kh7 31.Qb1?? f5 32.Qb5 Nb5 33.Bf6 Nc7 34.h4 –+. stoker – ooo11, Live Game Caissa's Web, 2004.

5.cb5 Bd7 6.e3 Nf6 =.

5.cb5 Nd7 6.e3 Nb6 7.Be2 Nf6 8.Nf3 Be6 9.0–0 Ba2 10.Nc3 Be6 11.Qc2 Be7 12.Ng5 Bd7 13.Ra8 Qa8 14.Ra1 Qd8 15.Bf3 h6 16.Nge4=+ Bf5?? 17.d3?? Ne4=+ 18.Ne4 Qd7 19.Qb3 0–0 20.h3 Be6–/+ 21.Qc2 Rc8 22.Nc3 f5?? 23.Bb7+= Rb8 24.Bc6 Qd8 25.e4 f4 26.Na4 g5 27.Nb6+/– cb6 28.Ra7 Rc8 29.Qe2 Kg7 30.Qh5 Bf7 31.Qg4+– Be8?? 32.Re7! Qe7 33.Qc8 Bf7 34.Ba3 Bb3 35.Qb8 (35.Qb8 Qf8 36.Qf8 Kf8 37.Bd6 Kf7 38.Be5+–) 1–0. mic (2155) – rooked (2230), net–chess.com, 2008.

5.cb5 Nd7 6.g3 Nb6 7.Bg2 Nf6 8.e3 Rb8 9.Ne2 Be7 10.d4 ed4 11.ed4 Bd7 12.a4 0–0 13.d5 Nc4 14.Bc3 b6 15.0–0= Bf5 16.Qb3 Na5 17.Qb2 Nc4 18.Qb3 Na5 19.Qb2 Nc4 20.Qb3 ˝–˝. MasterofDisaster – Kefir, Live Game Caissa's Web, 2004.

5.cb5 Be6 6.a4 Nf6 7.e3 Nbd7 8.Bd3 Bd5 9.f3 Nc5 10.Bc2 Be7 11.d4 ed4=+ 12.e4 Bc4 13.Bd4 0–0 14.Ne2 Re8 15.0–0 Ne6 16.Bb2 c6 17.Na3 Qb6 18.Rf2 Be2 19.Qe2 d5 20.e5 Bc5 21.ef6 g6?? 22.Raf1 Nf4 23.Qd2 Ne2 24.Kh1+/– Bf2?? 25.Qh6 (25.Qh6 Ng3 26.hg3 Qb5 27.Qg7#) 1–0. Sadanowicz,Tadeusz – Mer,Andrzej, Poland, 1985.

5.cb5 Be6 6.e4 Nd7 7.a4 Nc5 8.Nc3 Qg5 9.Nf3=+ Qg6 10.d3 Bb3 11.Qd2 Be7 12.Ba3 Na4–/+ 13.Na4 Ra4?? 14.Bb2?? Ra1–/+ 15.Ba1 Be6 16.Be2 Bd7 17.d4 Qe4 18.de5 de5 19.Ne5 Bb5 20.Nd3 Qg2 21.Rf1 f6 22.Nf4 Qe4 23.Bb2?? Bb4 24.Bc3 Be2 25.Ne2 Bc3 26.Qc3 Qe5 27.Qc7 Qc7 0–1. mic (2155) – rooked (2230), net–chess.com, 2008.

5.cb5 Nf6 6.e3 Be6 7.a4 c6 8.Nc3 d5 9.Nf3 Bd6 10.Be2 Nbd7 11.0–0 0–0 12.bc6 bc6 13.Ng5 h6 14.Ne6 fe6 15.Qc2 e4 16.Nd1 Qc7 17.h3 c5 18.Nc3 d4?? (better is 18...Bh2 19.Kh1 Be5+=) 19.Nb5+/– Qb8 20.ed4 cd4 21.Bd4 Be5 22.Qc4 Bd4 23.Qe6 Kh8 24.Nd4 Nc5 25.Qc4 Qe5 26.Nc6 (26.d3!?+–) 26...Qd6+/– 27.Nd4 Nh7?? (27...Qe5 28.d3 Rfc8 29.de4 Nce4+–) 28.Ra2 Ng5 29.Nb5 Qe7 30.Nc3 Rac8 31.Bg4 Nce6 32.Qe2 Nf4 33.Qe3 Rcd8 34.d4 h5 35.Bd1 Qe6 36.h4 Nh7 (36...Nf3 37.Bf3 ef3 38.Qe6 Ne6 39.d5+–) 37.Rd2 Nf6?? (37...Rde8+–) 38.Qf4 1–0. Ashimov,Fakil – Magadeev,Ilfat, Sterlitamak op, 2008.

5.cb5 Nf6 6.Nf3 Be7 7.e3 0–0 8.Be2 c6 9.a4 Bf5 10.0–0 Nbd7 11.d3 Nc5 12.e4 Bg6 13.Nh4 Qd7 14.Ng6 fg6 15.Nc3 Nh5 16.Bg4 Qd8 17.Bh5 gh5 18.Qh5 Nd3 19.Ba3 Nf4 20.Qd1 Qa5 21.Bb2 cb5 22.ab5 Qb4 23.Ra8 Ra8 24.Ba1 Qc4 25.Nd5 Bf8 26.Nf4+= ef4 27.b6 Qe4=+ 28.Qb3 Kh8 29.Qb2 f3 30.gf3 Qf3 31.Qb4 h6 32.Qh4 Re8 33.Qh6 Kg8 34.Qh4?? Re4–+ 35.Qg5 Rg4 36.Qg4 Qg4 37.Kh1 Qf3 38.Kg1 d5 39.Bd4 Bd6 40.Re1 Qg4 41.Kf1 Qd4 42.Re8 Kf7 43.Rd8 Bc5 44.Rd7 Kg6 (45.Ke1 Qe4 46.Kf1 Qc2 47.Rd6 Kh7 48.Ke1 Bf2 49.Kf1 Be3 50.Rh6 gh6 51.Ke1 Qd2 52.Kf1 Qf2#) 0–1. stoker – MVLousProfits, Live Game Caissa's Web, 2004.

4.e3 ab5

5.Bb5 c6 6.Bc4 =+.

5.Bb5 c6 6.Be2 Be6 7.Nc3 Nf6 8.Nf3= h6 9.0–0 Nbd7 10.d4 e4=+ 11.Nd2 d5 12.f3 ef3 13.Nf3 Bd6 14.Qd3 Qc7 15.e4 de4 16.Ne4 Ne4 17.Qe4 0–0 18.c4 Nf6 19.Qd3 Bg4 20.h3 Bf3 21.Qf3 Bh2 22.Kh1+= Bg3 23.d5 Nh7 24.Bd3 Ng5 25.Qf5 Bh4? 26.Bg7?? Kg7= 27.Qf6 Kg8 28.Qh6 Qg3= 29.Rf3 (29.Rf3 Qe5 30.Raf1+=). Wall,Bill – Fpcat, internet, 2002.

5.Bb5 c6 6.Be2 Be7 7.d4 e4 8.Nd2 d5 9.c4 Nf6 10.c5 0–0 11.Qc2 b6 12.cb6 Qb6 13.a3 Ba6 14.f3 Nbd7 15.fe4=+ de4 16.Ba6 Ra6 17.Ne2 c5 18.Rb1= Qa5 19.0–0 cd4 20.Bd4 Bc5? 21.Nb3+– Qc7 22.Nc5 Ng4 23.Nf4 Rc6 24.Qe2 Nh2 25.Rb7 Qc8 26.Rd7 Nf1 27.Qg4 Ne3 28.Qg7 1–0. lucya (2105) – Mr_S (2050), GameColony.com, 2002.

5.Bb5 c6 6.Be2 Nf6 7.Nf3 Be7 8.c4 e4 9.Nd4 0–0 10.Nc3 Na6 11.0–0= Nb4 12.Qb1 c5 13.Ndb5 Bf5 14.f3 ef3=+ 15.Qf5 fe2 16.Ne2 Qd7 17.Ng3 g6= 18.Qd7 Nd7 19.Ne4 f5=+ 20.Nec3 Nb6 21.Nc7 Ra5 22.a3 Nd3–/+ 23.N7d5 Nc4 24.Ne7=+ Kf7 25.Nf5 gf5 26.Rf5 Ke8 27.Rf8 Kf8 28.Rf1 Ke8–/+ 29.Ba1 Ra3 30.Ne4 b5 31.Nf6 Ke7–+ 32.Nh7 Nd2 33.Rd1 Ne4 34.Bg7 b4 35.Rf1 b3 36.Nf8 b2 37.Ng6 Ke8 38.Nf4 Ne5 39.Be5 de5 40.Ne6 Ra1 41.Ng7 Kd7 42.Nh5 0–1. COMP – COMP, 2001.

5.Bb5 Bd7 6.Nc3 Bb5 7.Nb5 Nf6 8.d4 ed4 9.Nd4 Be7 10.Ngf3 h6 11.0–0 0–0 12.h3 Nbd7 13.Qd3 Ne5 14.Qb5 Nf3 15.Nf3 b6 16.Nd4 d5 17.Rfe1 Ne4 18.Nf5 Bf6 19.a3 Bb2 20.Qb2=+ Qg5 21.Nd4 Qf6 22.Nf3?? Qb2–+ 0–1. Steingraeber,Barbara (2240) – Staats,Carsten (2315), RSM2002 remoteschach.de, 2002.

4.e4 ab5

5.Bb5 c6 6.Bd3 Nf6 7.Ba3 Be7 8.h3 0–0 9.g4 b5 10.g5 Nfd7 11.c3 Bg5 12.Nf3 Be7 13.h4 Na6 14.h5 Nac5 15.Bc5 (15.Bc2–+) 15...Nc5 16.Bc2 Bg4 17.h6 g6 18.d3? (18.d4 ed4 19.Qd4 Bf6–+) 18...Bg5 (Better is 18...f5 19.Rg1 Bf3 20.Qf3 fe4–+) 19.Nbd2?? Qf6 20.Qe2 Qf4 21.0–0–0?? Ra2 22.Kb1 Rfa8 23.Nb3 Nb3 24.Rhg1 Bf3 25.Qf3 Qf3 26.Rg5 Ra1 27.Kb2 0–1. pinecrest1981 – Blacknight, Live Game Caissa's Web, 2004.

5.Bb5 Bd7 6.Bd7 Nd7 7.Nf3 Ngf6 8.0–0 Ne4 9.Nc3 (9.d4!?+=) 9...Nc3–/+ 10.Bc3 Be7 11.d3 0–0 12.Re1 Nf6 13.Qb1 Qc8 14.a4 Nd5 15.Bd2 Bf6 16.Ra2 Nb6 17.a5 Nd7 18.c3 1–0. Maly,Guenther (1735) – Kreidilie,Kreidilie (2000), remoteschach.de, 2011.

4.e4 Nf6

5.Nc3 c5 6.Bc4 Be7 7.Nf3 0–0 8.0–0 ab5 9.Bb5 Bd7 10.Bc4 Nc6 11.d3 Nd4 12.Nd5 Bg4 13.Bd4 ed4 14.Rb1= Rb8 15.a4 Bf3 16.Qf3+= Qa5?? 17.Ne7+– (17.Ne7 Kh8 18.Qg3+–) 1–0. Wall,Bill – Mindcrust, chess.com, 2008.

5.d4 ed4 6.Qd4 ab5 7.Bb5 c6 =.

3.b5 b6

4.a4 Bb7 5.Nf3 Nf6 6.e3 Be7 7.c4 c6 8.Be2 0–0 9.0–0 h6 10.d3 e4 11.Nd4 c5 12.Nf5 ed3 13.Bd3 Nbd7 14.Ne7 Qe7+= 15.Nd2 d5 16.Nf3 Ne4 17.Qc2 Ndf6 18.Rfe1 Ng4+= 19.Ne5?? Ngf2 20.Be4–/+ Ne4 21.Nc6 Bc6–+ 22.bc6 dc4 23.Qc4 Rac8 24.c7 Rc7 25.Rad1 Qf6?? 26.Bf6+– Nf6 27.Rd6 Re7 28.e4 Rfe8 29.e5 Re5 30.Re5 Re5 31.Rd8 Kh7 32.Qc2 g6 33.h3 Re1 34.Kf2 Re5 35.Qc3 (35.Qc3 Ne4 36.Kf3 Nc3 37.Rd7 Rf5 38.Ke3–+; better is 35.Qb2 Rd5 36.Rd5 Nd5 37.Qb3+–) 1–0. OutOfBounce – gambitgod, Live Game Caissa's Web, 2005.

4.a4 Nd7 5.e3 Bb7 6.Nf3 h6 7.Be2 Nc5 8.c4 g5? 9.d4+– Ne4 10.Nbd2 Ngf6 11.d5 a6+/– 12.0–0 ab5 13.ab5 Ra1+/– 14.Qa1 Nd2 15.Nd2 h5? 16.Nf3 Bh6 17.Bd3 g4 18.Nd2 h4 19.Qa7 Bc8+= 20.Bc1 h3 21.g3= Nd7 22.Ne4 Nc5 23.Nc5+= dc5 24.e4 Bc1 25.Rc1 Qd7 26.Qa8 Ke7 27.Qc6 Qc6 28.bc6 Rf8 29.Ra1 Kd6 30.Be2 f5 31.f3 fe4 32.fe4+= Rg8?? 33.Rf1?? Rg7?? 34.Rf8+– Be6 35.de6 Kc6 36.Rf7 Rg8 37.e7 Re8 38.Bg4 Kd6 39.Bh3 Re7 40.Re7 Ke7 41.Bf5 c6 42.h4 b5 43.Kf2 bc4 44.Ke3 c3 45.Kd3 c2 46.Kc2 Kd6 47.Kc3 (47.Kc3 Ke7 48.g4 Kd6 49.h5 c4 50.h6 c5 51.g5 Kc6 52.h7 Kb6 53.h8Q Ka7 54.Qh7 Ka6 55.Bc8 Kb6 56.Qb7 Ka5 57.Qa6#) 1–0. tanto – valerypavlovich, net–chess.com, 2000.

4.a4 Be6 5.e3 Be7 6.Be2 Nf6 7.Nf3 h6 8.0–0 0–0 9.c4 c6 10.d4 e4 11.Nfd2 d5 12.c5 bc5=+ 13.bc6 c4 14.Nc3 Nc6 15.Nb5 Rb8 16.Rb1 Qd7 17.Ba3 a6 18.Be7 Ne7 19.Nc3 Ng4 20.Bg4 Bg4 21.f3 ef3 22.Nf3 Nf5?? 23.Qd2?? Rb1–+ 24.Rb1 Bf3 25.gf3 Qd6 26.e4 de4 27.Qg2?? Qd4 (27...Qd4 28.Qf2 Qc3 29.fe4 Nd6–+) 0–1. tanto (1655) – sanbarrett (1945), net–chess.com, 2001.

4.a4 Nf6 5.e3 Ne4 6.Nf3 Nc5 7.Be2 Be7 8.0–0 0–0 9.c4 Bb7 10.d4 Ne4 11.Nbd2 Nd2+= 12.Qd2 e4 13.Ne1 d5 14.cd5 Bd5 15.Nc2 Nd7 16.Nb4 Bb7 17.Qc3 Bf6 18.Rac1 Nc5 19.Qa3 Ne6 20.d5 Bb2+= 21.Qb2 Nc5 22.Qc2 Bd5?? 23.Rcd1 Re8? 24.Nd5 Qd6 25.Nb4 Qg6 26.Nd5 Rad8?? 27.Nc7 Rf8 28.Rd8 Rd8 29.Rd1 Nd3 30.Qb2 f6 31.Qb3 Kh8 32.Ne6 Rd7 33.Bd3 Rd3 34.Rd3 ed3 35.Nf4 Qe4 36.Qd3 Qd3 37.Nd3 Kg8 38.f3 Kf7 39.Kf2 Ke6 40.Ke2 Kd5 41.Kd2 Kc4 42.Kc2 g6 43.g3 g5 44.h3 h6 45.h4 Kd5 46.hg5 hg5 47.Kc3 Kd6 48.Kd4 Ke6 49.f4 gf4 50.gf4 Kd6 51.e4 1–0. tanto – nhoj, net–chess.com, 2001.

4.Nc3 Nf6 5.e3 Bb7 6.Ba3 g6 7.Bc4?? Bg2–+ 8.Bd5 Nd5 9.e4 Nc3 10.dc3 Bh1 11.Qd5 Be4 12.Qe4 d5 13.Qe5 Kd7 14.Qh8 Ba3 15.Qh7 Qe7 16.Ne2 Bb2 17.Rd1 Bc3 18.Kf1 Bb4 19.Qh3 f5 20.Rd5 Bd6 21.Nf4 Qf6 22.Qh7 Qe7?? 23.Qg6?? c6?? 24.Qf5?? Kc7–+ 25.Ne6 Kd7?? 26.bc6+– Nc6?? 27.Nd4 Kc7 28.Nb5 Kd8 29.Rd6 Ke8 30.Nc7! Qc7 31.Qg6 Qf7 32.Qe4 Kf8 33.Qc6 Re8 34.Rf6 Qf6 35.Qf6 Kg8 36.h4 Rf8 37.Qg6 Kh8 38.h5 b5 39.h6 a5 40.Qg7# 1–0. Jolilein – MichaelKnopf, mySchach.de, 2005.

4.c4 a6 5.Nf3 ab5 6.cb5 Ra5 7.Nc3 Qe7 8.Nd5+= Qd7 9.Bc3 Rb5 10.e4 c6?? 11.Bb5+– cb5 12.Nb6 Qb7 13.Nc8 Qc8 14.Rc1 Qc4?! 15.Ng5 Qa2 16.Ra1 Qc4 17.Ra8 Qc6 18.Qb3 Qb7 19.Qf7! Qf7 20.Rb8 Ke7 21.Rb7 Kf6 22.Nf7 Be7 23.Nh8 g6 24.f4 Bf8 25.Rf7 Ke6 26.Rf8 Ke7 27.Rg8 Kd7 28.fe5 de5 29.Rg7 Kd6 30.Bb4 Ke6 31.Rf1 g5 32.Re7# 1–0. dwtu – ouos, internet, 2009.

4.d3 a6=+ 5.a4 ab5 6.ab5 Ra1 7.Ba1 d5 8.Be5+= Nf6 9.e3 Qe7 10.Ba1 Qb4+= 11.c3 Qb5= 12.Be2 Qa5 13.Bb2 Bd6 14.Nf3 0–0 15.0–0 c5 16.c4+= Be7 17.Bf6 Bf6 18.cd5 Be7 19.Nbd2 b5 20.Qc2 Bb7 21.e4+/– f6 22.Nb3 Qb6+/– 23.Nh4 Bc8+= 24.Rc1 Na6 25.h3 f5 26.Nf3 Nb4 27.Qb2 fe4 28.de4 c4 29.Nbd2 Bc5= 30.Rf1 Rf6 31.e5 Rh6 32.Ne4 Bh3?? 33.Nc5 Bg2+/– 34.Ne6 Nd5 35.Neg5?? Nf4–+ 36.Bc4 bc4 37.Qb6 Rh1# (37...Rb6?! 38.Rd1 Rb8 39.Rd4 Bf3 40.Rf4–+) 0–1. mic (2185) – rooked (2245), net–chess.com, 2009.

4.d4 Qd7 5.e4+= Nf6 6.Nf3 (6.Bd3 ed4 7.Bd4 a6+=) 6...ed4= 7.Qd4 Qe7 8.Nc3 Bb7 Will e4 fall? 9.Bc4 Nbd7 10.Nd5 Qe4? (better is 10...Nd5 11.Bd5 Nc5+/–) 11.Qe4+– Ne4 12.Nc7 Ke7 13.Na8 Ba8 14.0–0–0 Nf2 15.Rhe1 Kd8 16.Rd2 Ng4 (16...Ne4 17.Rd4 Ndc5 18.Bf7+–) 17.Ng5 Kc8 (17...Nh6+–) 18.Re8 Kc7 19.Bf7 Bg2 (19...h6 20.Ne6 Kb7 21.Rd8+–) 20.Rg2 Ne3 (20...Nge5 21.Ne6 Kb7 22.Rd8+–) 21.Ne6 Kb7 22.Rg3 Nf1 23.Rc3 Nc5 24.Nc5 dc5 25.Rf3 Nh2 (25...Be7 26.Re7 Kb8 27.Be5 Kc8 28.Rc7 Kb8 29.Rc5 Kb7 30.Bd5) 26.Bd5 Kc7 27.Be5 Kd7 (27...Bd6 28.Rf7) 28.Bc6# 1–0. Taulien,Hans_Juergen (2350) – Tsobas,Christos (1710), remoteschach.de, 2003.

4.d4 Bd7 5.e4 Qe7 6.Nc3 Nf6 7.d5 g6 8.a4 Bg7 9.a5 0–0 10.a6 Nh5 11.h3 f5 12.ef5 Bf5? 13.g4+– Bg4 14.hg4 Qf6 15.Ne4 Qf4 16.Bg2 Nf6 17.Nh3 Qg4 18.Nf6 (18…Bf6 19.Qg4+–) 1–0. Taulien,Hans_Juergen – Schmidt,Jewgeniy, remoteschach.de, 2001.

4.d4 g6 5.de5+/– Nd7?? (better is 5...Bg7+/–) 6.Qd5+– Ne5 (6...Rb8 7.e6 Ngf6 8.ed7 Bd7+–) 7.Qa8 a5 (7...Bg7 8.Nd2 Be6 9.Qa7 Nh6+–) 8.f4 Nc4 (8...Bd7 9.Qd8 (9.fe5?! Qa8 10.e6 Bc6 11.bc6 f6+/–) 9...Kd8 10.fe5+–) 9.Bh8 Qh4 (9...d5 10.Nf3+–) 10.g3 Qd8 11.Qc6 Bd7 12.Qc4 Be6 13.Qd4 c5 14.bc6 d5 15.Nc3 Ba3 16.c7! Qc7 17.Qa4 Qd7 18.Qa3 Nh6 19.e4 de4 20.Bg7 (20.Bg7 Qe7 21.Bb5 Bd7 22.Bd7 Kd8 23.Bf6 Qf6 24.0–0–0 Qe7 25.Bb5 Kc8 26.Qe7 f5 27.Rd8#) 1–0. Taulien,Hans_Juergen (2350) – Albrecht,Markus (2115), remoteschach.de, 2002.

4.e3 c6 5.Bc4 d5 6.Bf1 a6 7.Be5= Nd7 8.Bf4 Ngf6?? 9.Nf3 Nc5 10.Ne5 Nfe4? 11.Nc6 Qd7 12.d3 Nf6 13.Be5 Ng4 14.h3 Nf2?? 15.Kf2+– ab5 16.Nd4 Bb7 17.Qh5 g6 18.Qg5 Ne6 19.Ne6 Qe6 20.Bh8 Be7 21.Qf4 f6 22.Nc3 0–0–0 23.Bg7 g5 24.Qd4 Qf5 25.Ke2 Qg6 26.Nb5 Qg7 27.Qb6 Kb8 28.Qc7 Ka8 29.Qa5 Kb8 30.Qa7 Kc8 31.a4 f5 32.d4 g4 33.Ra3 Ba3 34.Na3 f4 35.Qc5 Kb8 36.Nb5 Rc8 37.Qd6 Ka8+– 38.a5 Rc2 39.Kd3 Rc6 40.Qd8 Rc8 41.Qb6 Bc6 42.Qa6 Kb8 43.Qb6 Ka8 44.a6 Qg6?? 45.Ke2 Bb5 46.Qb5 Qc2 47.Ke1 Qc1 48.Kf2 Rc2 49.Kg1 Qe3 50.Kh2 g3# 0–1. blacksteelpipe – heath, Live Game Caissa's Web, 2005.

4.e3 Bd7 5.Nf3 a6= 6.a4 ab5 7.ab5 Ra1 8.Ba1 Qe7 9.c4 Nf6 10.Be2 Ne4 11.0–0 Nc5 12.d4+/– Ne4 13.de5+– de5 14.Be5 Qc5 15.Bd4 Qb4 16.Qd3 Bf5?? 17.Nh4 g6 18.Nf5 gf5 19.Bh8 Nd7 20.Qd5 Qc5 21.Nc3 Nc3 22.Qc5 Ne2 23.Kh1 Bc5 24.Re1 f6 25.Re2 Kf7 26.Rd2 Ne5 27.Rd8 Be7 28.Rc8 Nc4? 29.Rc7 Nd2 30.h4 Ne4 31.h5 Nf2 32.Kg1 Ng4 33.Rb7 Ne3 34.Rb6 Nc4 35.Rb7 f4 36.Kh2 Nd6 37.Rb8 Ne8 38.b6 Nd6 39.b7 Ke6 40.Bg7 Kd7 41.Rd8! Bd8 42.b8Q Ke7 43.Bf6! Kf6 44.Qd8 Ke6 45.Qg8 (45.Qg8 Ke5 46.Qh7+–) 1–0. paqua – JayDeeTwo, Caissa.com, 2004.

4.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 b6).

4.e4 c5 5.Bc4 Be6 6.Be6 fe6 7.Qh5 g6 8.Qh3 a6 9.Qe6+– Be7 10.f4! ab5 11.fe5+– Qd7 12.Qd5 de5?? 13.Qa8 Bg5 14.Qb8 Ke7 15.Qe5 (15...Qe6 16.Qg5 Nf6 17.e5+–) 1–0. marluc – thumper5, Live Game Caissa's Web, 2004.

4.e4 c6 5.d4 cb5 6.Bb5 Bd7 7.Na3 ed4 (7...Nf6 8.Nf3 Nc6+=) 8.Bd4 (8.Nf3 Be7+/–) 8...Bb5 (better is 8...Nf6 9.Qe2 Be7 10.Bd7 Qd7=) 9.Nb5+/– Nc6 10.Bc3 (10.Nf3+/–) 10...f6? (better is 10...a6!? 11.Nd4 Nd4 12.Qd4 Nf6+/–) 11.Qh5 g6 12.Qd5 Kd7? (better is 12...Qd7 13.0–0–0 Rd8+/–) 13.Qf7 (better is 13.Nf3+–) 13...Qe7+= 14.Qd5 Rc8?? 15.Ne2+– Qd8?? 16.0–0 a6 17.Nbd4 Qe7 18.Rab1 Nd4 19.Qd4 b5 20.f3 Ke8 21.Qb6 Ra8 1–0. Steingraeber,Barbara (2240) – Ritschel,Stephan (1935), remoteschach.de, 2002.

4.e4 Qh4 5.Nc3 Qe7 6.Nd5+/– Qd8 7.d4 Qh4?? 8.Nc7+– Kd8 9.Na8 Qe4 10.Qe2 Qa8 11.de5 Bh3 12.Nh3 de5 13.0–0–0 Nd7 14.Ng5 Nh6 15.Qe5 f6 16.Ne6 Kc8 17.Qc7# 1–0. pierre – jsmck, ChessHere.com, 2006.

4.c4 Bb7

5.Nc3 a6 6.d4 =.

5.Nc3 Qg5 6.Nf3 Bf3 (6...Qg4 7.d4+=) 7.ef3 Nf6 8.Ne4 Qg6 (8...Ne4 9.fe4 Be7 10.Qf3+=) 9.Nf6 Qf6 10.d4 Nd7 11.Bd3 Be7 (11...ed4 12.0–0+/–) 12.0–0 0–0 13.Qc2 (13.Re1+/–) 13...ed4 (13...Qh4!?+/–) 14.Bh7+– Kh8 15.Be4 Rae8 16.Rfd1 c5 (16...Qh6 17.Bc6 Rd8 18.Bd4+–) 17.bc6 Nc5 18.Rd4 Qe6 (18...Qh6 19.Rad1+–) 19.Bf5 Qh6 20.c7 (20.Rad1!? Ne6 21.Re4 Bg5+–) 20...Ne6 21.Be6 fe6 22.Rg4 Rf7?? (22...Bf6+–) 23.Qa4 (23.Qa4 Ref8 24.Qd7+–) 1–0. Wall,Bill – Gratcscc, internet, 1999.

5.d4 a6 6.de5 ab5 7.cb5 d5 8.Nf3 Bb4 9.Bc3 Qe7 10.Qd2 Bc3 11.Nc3 c6 12.e4+– Qb4? 13.bc6 Bc6 14.Rb1 Qa5 15.ed5 Bd7 16.Ne4 Bf5 17.Nd6 (17...Kf8 18.Qa5 Ra5 19.Nf5+–) 1–0. Trkn – guest4414, ICC, 2004.

5.e3 a5 6.a4 Nd7 7.Nf3 g6 8.g3 (8.d4 Bg7+=) 8...Bg7 9.Bg2 Ne7 10.0–0 0–0 11.d4 ed4 12.Bd4 Bd4 13.Qd4 Nf5 14.Qb2 Qf6 15.Qf6 Nf6 16.Nc3 Rfe8 17.Rfe1 Rad8 18.Rad1 Ba8 19.Nd4 Nd4 20.Ba8 (20.Rd4 Bg2 21.Kg2 Kg7+=) 20...Ra8 (20...Nc2!? 21.Bc6 Ne1 22.Be8 Nf3 23.Kg2 Ne5=) 21.Rd4+= Rad8 22.Nd5 Nd5 23.cd5 f5 24.h3 Re4 25.Re4 fe4 26.Rc1 Rd7 27.Kg2 Kf7 28.f4 ef3 29.Kf3 Kf6 30.Kf4 h6 31.Ke4 Re7 32.Kd4 Kf5 33.Rf1 Kg5 34.Rf4 h5 35.h4 Kh6 36.e4 g5? 37.Rf6+– Kg7 38.hg5 Re5 39.Rf5 Kg6?? 40.Re5 de5 41.Ke5 Kg5 42.Kd4 Kg4 43.e5 Kg3 44.e6 h4 45.e7 (45.e7 Kg4 46.e8Q Kf3 47.Qe4 Kf2 48.Qf4 Ke2 49.Ke4 c5 50.Qe3 Kd1 51.Kd3 c4 52.Kc3 h3 53.Qd2) 1–0. Chulia Sanmartin (1865) – Ramirez Lomas (1820), Valencia Provincial South, 2004.

5.e3 Nd7 6.d4 ed4 7.ed4 d5 8.Nf3 Ngf6 9.Bd3 Bb4 10.Bc3 Qe7 11.Qe2 Bc3 12.Nc3 dc4 13.Bc4 Bf3 14.Qe7 Ke7 15.gf3 Rhe8 16.0–0–0 Rad8 17.Ne4 h6 18.Rhe1 Kf8 19.Kc2 Re7 20.Kc3 Rde8 21.Bd3 (21.Nf6 Nf6 22.Re7 Re7=) 21...Nd5+= 22.Kc4 Nf4 23.Bf1? (better is 23.Re3+=) 23...f5–+ 24.d5?? (better is 24.Bd3–+) 24...fe4 (24...Ne5 25.Kb3 Nf3 26.Re3 fe4 27.Be2 Ne2 28.Re2 Nh2 29.Kb4–+) 25.Rd4 (25.fe4 Re4 26.Re4 Re4 27.Kc3–+) 25...Ne5 26.Kb3 (26.Kc3 Nf3 27.Re3 Nd4 28.Kd4 Rd8–+) 26...Nf3 27.Rdd1 Ne1 28.Re1 Nd5 0–1. Wich,Manuela – Haecker,Gabriele (2000), BL2 Gr01, 2009.

5.e3 Nf6 6.Nc3 Be7 7.Nf3 0–0 8.d4 ed4 9.Nd4 Re8 10.f3 c6 11.Bd3 cb5 12.cb5+= Nd5 13.Nd5+/– Bd5 14.0–0 Bf6 15.e4 Bd4 16.Bd4+/– Be6 17.Rc1 Nd7 18.Qd2 Rc8 19.Rc8+/– Qc8 20.a3 Qb7 21.Rd1 Nc5 22.Qg5 f6 23.Bf6+– Nd3 24.Rd3 Bc4 25.Rd6 Rf8 26.Bd4 h6 27.Rh6 (27.Rh6 Qd7 28.Rd6+–) 1–0. b4_player – opponent, kurnik, 2008.

5.e3 Nf6 6.Nf3 Nbd7 7.d4 Qe7 8.Be2 g6 (8...a6 9.0–0+=) 9.0–0+= Bg7 10.Nc3 0–0 11.a4 Rfd8 12.d5 Nc5 13.Qc2 Bc8 14.Nd2 Bf5 15.e4 Bc8 16.Ba3 Nfd7 17.Bb2 Bh6 (17...Nf6!?=) 18.Nf3+/– a5 19.Bc1 Bg7 20.Bg5 f6 21.Be3 Rf8 22.Ra3 f5 23.ef5 gf5 24.Bg5 Qf7 25.Be3 h6 26.Qc1 (26.Re1!?=) 26...f4+= 27.Bc5 Nc5 (worse is 27...bc5 28.Re1+=; worse is 27...dc5 28.Bd3+/–) 28.Nd2 Bf5 29.Bf3 Qg6 30.Qe1 Bd3 31.Be2 f3 (31...Bc2!?+=) 32.Nf3= e4 33.Nh4 (33.Bd3!? ed3 34.Nd2=) 33...Qg5+= 34.g3 Rae8 35.Ng2 Bd4 36.h4? Qe5 37.Nf4 Rf4 38.gf4 Qf4 39.Kg2 Qh4 40.Nd1?? Re7 41.Ne3–+ Be3 42.Qd1 Rg7 (42...Rg7 43.Bg4 Bf1 44.Kg1 Qf2 45.Kh1 Qg2) 0–1. Schwichtenberg,Juergen (1635) – Lantsman,Boris (1690), GER–ch Seniors–B, 2008.

4.c4 c5

5.bc6 Nc6 6.Nc3 Nf6 7.e4 Be7 8.Nf3 0–0 9.Be2 =.

5.bc6 Nc6 6.e3 Be7 7.d4 (7.Nf3 Nf6 8.d4 e4 9.Nfd2=) 7...Bf6 (7...Nf6 8.Nf3 0–0 9.de5=) 8.d5 (8.Nf3 ed4 9.Nd4=) 8...Nce7 (8...Na5 9.Nf3=) 9.Nd2 (9.Nc3=) 9...Nh6 (9...e4!? 10.Bf6 Nf6=) 10.Ne4+= Ng6 (10...Nef5+=) 11.Ba3 (better is 11.Qa4!? Bd7 12.Nd6 Kf8 13.Qa6+/–) 11...Be7= 12.Nf3 Nf5 13.g4 Nfh4 14.Nfd2 0–0 15.Nc3 a6 16.Bb2 h6 17.Bd3 Nh8 18.Ne2 (18.Rg1!?=) 18...Bg4–/+ 19.Qc2 N4g6 20.f4 (20.Rg1 Bd7–/+) 20...Bf6 (better is 20...Bh4!? 21.Kd1 ef4 22.ef4 Be2 23.Be2 Nf4–+) 21.f5–/+ Be2 22.Ke2 Ne7 23.Rhg1 Rc8 24.Rg2 (24.Qa4 Nd5 25.cd5 e4 26.Ba6 Bb2+/–) 24...b5 25.a3? (25.cb5 Rc5 (25...Rc2)) 25...Nd5!–+ 26.Rag1 (26.cd5 Rc5 (26...Rc2)) 26...bc4 27.Bc4 Rc5?? 28.Qe4?? Nf4?? 29.ef4 ef4?? 30.Bf6 Qf6+– 31.Rg7 Qg7 32.Rg7 Kg7 33.Qf4 Re5 34.Kf3 Rg8 35.Ne4 Ra5 36.f6 Kh7 37.Qd6 Rf5 38.Ke3 a5 39.Bd3 Ng6 40.Qd7 Rf8 41.Qf5 (41.Qf5 Re8 42.Qd7 Rf8 43.Nd6 Kg8 44.Bg6 h5 45.Bf7 Kh8 46.Bg6 Rf7 47.Nf7 Kg8 48.Qe8#) 1–0. Trokenheim,Marek – Hallberg,Sylve, Stockholm SWE, 1982.

5.bc6 Nc6 6.e3 Nf6 7.Nf3 Be6 8.Nc3 Be7 9.Qa4 Qc7 10.Bd3 a6 11.Ng5 0–0 12.Rc1 b5 13.cb5+/– ab5 14.Qh4 h6 15.Ne6 fe6 16.Bb5 Qb6 17.Qc4 d5?? 18.Qc6+– Qc6 19.Bc6 Ra6 20.Bb5 Rb6 21.a4 d4 22.ed4 ed4 23.Ne2 d3 24.Nf4 Kf7 25.Nd3 Rd8 26.Ne5 Kf8 27.Ng6 Kf7 28.Ne7 Ke7 29.Rc7 Nd7 30.Ba3 Ke8 31.Ke2 Rd6 32.Bd6 1–0. pierre – tdf, internet, 2008.

5.bc6 Nc6 6.e3 Nf6 7.Nf3 Be7 8.d4 Bf5 9.d5 =.

5.bc6 Nc6 6.e4 Nf6 7.Nc3 Be7 8.Nf3 0–0 9.Be2 =.

5.bc6 Nc6 6.Nf3 e4 7.Nd4 Nd4 8.Bd4 d5 9.cd5 +=.

4.c4 Nd7

5.d4 ed4 6.Bd4 Bb7 7.e3 Ngf6 8.a4 Be7 9.Nf3 0–0 10.Be2 Ne4 11.Nbd2 Bf6 (11...Nd2 12.Nd2 a6 13.0–0=) 12.Ne4 Be4 13.0–0 Bb7 (13...a6 14.Nd2 Bg6 15.f4 Bd4 16.ed4=) 14.Ra2 (14.Qc2 a6+=) 14...Re8 15.Ne1 Bd4 16.ed4 Qf6 (16...a6 17.Bf3 Bf3 18.Nf3=) 17.Bd3 (17.Bf3 Bf3 18.Nf3 a6=) 17...Re7 18.d5 Nc5 (18...a6 19.Re2=) 19.a5 (19.Re2 Rae8=) 19...ba5+= 20.Ra5 (20.Qc2 a4 21.Bh7 Kh8+=) 20...a6 (20...Qc3 21.Qa1 Qa1 22.Ra1–/+) 21.Qc2 g6 (21...ab5 22.Rb5 Kh8 23.Rb1–/+) 22.ba6= Ba6 23.Nf3 Ree8 (worse is 23...Nd3 24.Qd3 Ree8 25.Qa3+=) 24.Rfa1 (24.Re1 Re1 25.Ne1 Re8=) 24...Reb8 (24...Nd3 25.Qd3 Bc4 26.Ra8 Qa1 27.Ra1 Bd3 28.h3–/+) 25.R5a2 (25.R1a3+=) 25...Rb6 (better is 25...Nd3 26.Qd3 Bc4 27.Ra8 Bd3 28.Rb8 Kg7–+) 26.Re1 Rbb8 27.Bf1 Bc8 28.Re8 Kg7= 29.Qd2 Nb3 30.Qb2 Qb2 31.Rb2 Bg4?? 32.Rb8+– Rb8 33.Nd4! Bd1 34.Rb1 Nd4 35.Rb8 Ne2 36.Kh1 Nd4 37.Rc8 h5 38.Rc7 Nf5 39.Rb7 Kf6 40.f4 Ne3 41.Rd7 Nf1+/– 42.Rd6 Ke7 43.Rb6 Bg4 44.c5 Kd7? 45.Rb7 Kc8 46.Rf7 Ne3 47.d6 Nc4 48.g3 Bf5 49.Kg2 Ne3 50.Kg1 Nc4 51.Kf2 Be4 52.Rg7 Bf5 53.Ke2 Na5 54.Ke3 Nc6 55.Re7 Na5?? 56.Kd4 Nb3?? 57.Ke5 Na5 58.Kd5 Bh3 +–. Baxa,Ottokar – Fink,Waldemar (1700), Passau op 6th, 1998.

5.e3 Bb7 6.Nf3 Nh6 7.Be2 g5 (7...a6 8.0–0=) 8.d4 (better is 8.0–0!?+=) 8...g4+= 9.Nfd2 Rg8 (better is 9...Bg2!? 10.Rg1 Bh3+=) 10.d5 Qe7 11.Ne4 (11.Nc3 a6+/–) 11...f5 12.Ng3 Nc5 13.Nd2 Qf7 14.f3 (14.a4 a5=) 14...f4 15.ef4 gf3 16.gf3 (worse is 16.fe5 fe2 17.Qe2 de5–/+) 16...ef4 17.Nge4 Bg7 ˝–˝. Meyer,Ingo (2235) – Wukits,Josef, Vienna op–C, 2003.

5.e3 Ngf6 6.Nc3 Be7 7.f3 (7.Qf3 Rb8=) 7...0–0+= 8.Bd3 Nc5 9.Bc2 Bb7 10.Nge2 d5 11.cd5 Nd5 12.0–0 f5 13.Nd5 Bd5 (better is 13...Qd5 14.d4 ed4 15.ed4 Bf6+=) 14.Nc3 (14.Be5 a6+/–) 14...Bb7 (14...Bc4 15.Rf2 Nd3 16.Bd3 Qd3 17.Ne2–/+) 15.Rc1 (15.d4 ed4 16.ed4 Nd7+=) 15...a6 (15...Nd3 16.Bd3 Qd3 17.Qe2+=) 16.a4 (16.d4 ed4 17.ed4 Nd7=) 16...a5 (16...Nd3!? 17.Bd3 Qd3+=) 17.Ne2 (17.d4 ed4 18.ed4+=) 17...Bd5? (better is 17...e4!?+=) 18.Be5+/– Bc4 (better is 18...Bd6!? 19.Bd6 Qd6+/–) 19.d4+– Nd7 20.Bb3 (20.Bc7 Qc7 21.Bb3 Kh8 22.Rc4 Qd6+–) 20...Ne5 21.Bc4 (21.de5!? Bf7+–) 21...Nc4 22.Rc4 Bb4 23.Qb3 Kh8 24.Nf4 Qe7 (24...Bd6 25.Ne6 Qh4 26.f4+– (26.Nf8?? Bh2 27.Kh1 Bg3 28.Kg1 Qh2)) 25.Rc6 (25.Nd5 Qh4 26.Nb4 ab4 27.Rc7 Rfe8+–) 25...Rae8 (better is 25...Bd6+–) 26.Kf2?? (better is 26.Nd5!? Qf7 27.Rc7 Re7+–) 26...Qd7?? (26...Qh4 27.Kg1 Qe7+–) 27.Ne6+– Rf7? 28.Rfc1 Bd6 29.Qd5?? Re6–+ 30.Rc7 Bc7 31.Qa8?? Re8 32.Rc7 Ra8 33.Rd7 Rd7 34.g3 Re8 –+. Brique (2050) – Tordjman (1900), Roque, 1991.

4.c4 Nf6

5.e3 Nbd7 6.Nf3 Nc5 7.d4 ed4 8.ed4 Ne6 9.d5 Nc5 10.Bd3 Bg4 11.0–0 Nd3 12.Qd3 Bf3 13.Re1 Kd7?? 14.Qf5 (14.gf3?! Kc8+/–) 1–0. miehnekort – newphoneline, Yahoo, 2005.

5.Nf3 Bb7 6.e3 Be7 (6...e4 7.Nd4 c5 8.bc6 Nc6 9.Nc3 Be7 10.Be2 0–0 11.0–0 Nd4; 6...Nbd7 7.Nc3 Be7 8.Be2 0–0 9.0–0 e4 10.Nd4 Ne5 11.Qb3 a6) 7.Be2 (7.Nc3 Nbd7 8.Be2 0–0 9.0–0 e4 10.Nd4 Ne5 11.Qb3 a6) 7...0–0 (7...Nbd7 8.0–0 0–0 9.Nc3 e4 10.Nd4 Ne5 11.Qb3 a6) 8.0–0 (8.Nc3 Nbd7 9.0–0 e4 10.Nd4 Ne5 11.Qb3 a6) 8...h6 (8...Nbd7 9.Nc3 e4 10.Nd4 Ne5 11.Qb3 a6) 9.Nc3 Nbd7 10.Qc2 (10.d4 Re8 11.h3 a6) 10...c5 (10...e4 11.Nd4 Ne5) 11.d3 (11.Nh4 a6) 11...Nh7 (11...a6+=) 12.Nd2 f5 13.f4 ef4 14.ef4 (worse is 14.Rf4 Bg5–/+) 14...Nhf6 15.Bf3 Bf3 16.Nf3 (worse is 16.gf3 Nh5 17.Nd5 Ndf6+=) 16...Re8 17.Rae1 Bf8 18.d4 Ng4 (18...g6!?+/–) 19.Nd5+– (19.Qf5?! Ne3 20.Re3 Re3 21.dc5 Nc5+= (21...dc5?? 22.Rd1+–)) 19...Ndf6 (19...Re1 20.Re1 (20.Ne1?! g6+/–) 20...g6 21.dc5 bc5 22.Qd3+–) 20.Qf5 Nd5 21.Qd5 (21.Qg4 Ne3 22.Qg6 Nf1 23.Re8 Qe8 24.Qe8 Re8 25.Kf1 g6+=) 21...Kh8 22.Re8 Qe8 23.Re1 Qd8 24.Qf7 d5 25.Qe6 Nf6 26.Ne5 Qc8 27.cd5 cd4 28.Qc6 Bc5 29.Kf1 Qc6 30.dc6 a6 31.a4 ab5 32.ab5 Nd5 33.Ra1 Ra1+/– 34.Ba1 Nc7 35.Ke2 Nb5 36.Kd3 Kg8 37.Nf3 Kf8? 38.Bd4 Bd4 39.Nd4 Nc7 40.Kc4 Ke7 41.Nb5 Na6 42.Kd4 Nb4+/– 43.g4 Nc6+= 44.Kd5 Nb4 45.Ke5 g6 46.Ke4 Kf6 47.Nc7+/– Ke7 48.f5 Kf7 49.h4 Nc6+= 50.h5 gh5 51.gh5 Na7 52.Na6 b5 53.Nb4 Nc8 54.Ke5 Ne7 55.f6 Ng8–/+ 56.Nd5 ˝–˝. Chumarova,Karina – Epifanov,Aleksandr, Novomikhailovsky RUS, Open, 2011.

4.d4 ed4!?

5.Qd4 Bb7 6.Qg4 (6.e4 Nf6 7.Nc3 a6=) 6...Nf6+= 7.Qg3 (7.Qg5 a6+=) 7...Nbd7 (7...a6 8.e3+=) 8.e3 h6 (8...Ne4 9.Qg4+=) 9.Nf3= Bf3 (9...Nc5 10.Nc3=) 10.Qf3+= Be7 (10...d5 11.Bd3+=) 11.Bd3 (11.Bc4 0–0+=) 11...0–0 12.Nd2 (12.0–0 Nc5+=) 12...Ne5 (12...a6 13.a4+=) 13.Be5 de5 14.Qf5 (14.0–0 Qd5 15.Ne4 Qe6+/–) 14...Bb4 15.Rd1 (15.Qe5 Re8 16.Qf5 Bd2 17.Kd2 a6+=) 15...Qe7 (15...Re8 16.Ke2 g6 17.Qh3+=) 16.0–0+= Bd2 17.Rd2 e4 18.Be2 (18.Bc4 Rad8 19.Rdd1 Qb4=) 18...Rad8 (18...Rfd8 19.Rdd1 Qa3=) 19.Rfd1 (19.Rdd1 Qa3 20.Qe5 Rc8=) 19...Rd2+= 20.Rd2 Qb4 21.Rd1 (21.Rd4 Qb1 22.Bf1 Qc2=) 21...Qc3 22.Kf1 (22.Rd4 Qc2 23.Bf1–/+) 22...c5 (22...Qc2!? 23.Qe5 c5–/+) 23.bc6= Qc6 (23...Qc2 24.Qb5+=) 24.c4 Qc7 25.g3 (25.Kg1 Qe7=) 25...Re8 26.Qb5 (26.Kg2 Re5 27.Rd8 Qd8 28.Qe5 Qd2+=) 26...Re5 27.Qb2 Re7 28.Rd4 Rd7 29.Ke1 Qc5 30.a3 Kh7 31.Qb4 a5 32.Qc5= bc5 33.Rd7 Nd7 34.Kd2 f5 35.f3 Kg6 36.fe4 fe4 37.Kc3 Kf6 38.Kb3 Nb6 39.Kc3 g6 40.h4 g5 41.h5 Kf5 42.g4 Ke5 43.Bf1 Ke6 44.Be2 Ke5 45.Bd1 Ke6 46.Bc2 Ke5 47.Kb3 a4 48.Kc3+/– Nd7 49.Ba4 Ke6? 50.Bd7 Kd7 51.a4 Kc6 52.a5 Kb7 53.Kb3 Ka6?? 54.Ka4+– (54.Ka4 Kb7 55.Kb5 Ka7 56.a6 Ka8 57.Kc5 Ka7 58.Kb5 Kb8 59.c5 Kc8 60.c6 Kc7 61.a7 Kd8 62.a8Q Kc7 63.Qb7 Kd6 64.c7 Ke5 65.c8Q Kd6 66.Qcc6 Ke5 67.Qbc7#) 1–0. Thielscher,Rene – Von Hohenthal,Ludwig, Pinneberg–ch op, 1998.

5.Qd4 Nf6 6.Nc3 =.

5.Bd4 a6 =.

5.Bd4 c5 6.bc6 Nc6 =.

4.d4 Nd7

5.de5 Ne5 6.Nd2 Nf6 7.e3 Be7 8.Ngf3 Bg4 (8...Nf3 9.Qf3 d5 10.Bd3=) 9.Be2 Nf3 10.Nf3 0–0 11.Nd4 Be2 12.Qe2 Qd7 13.0–0 Rfe8 14.Qf3 a6 15.a4 a5 16.Nf5 Rab8 17.Rfe1 c5?? (better is 17...Qe6+/–) 18.bc6+– Qc7 19.Rad1 Rbc8 20.Bf6 Bf6 21.Nd6 (21.Nd6 Red8 22.Nc8 Rc8 23.e4 Qc6 24.Qe3+–) 1–0. Taulien,Hans_Juergen (2350) – Neffgen,Dieter (1840), remoteschach.de, 2002.

5.de5 Ne5 6.e3 Nf6 7.Nf3 Be7 8.Ne5+/– de5 9.Qd8 Bd8 10.Be5 0–0 11.Nd2 Bb7 12.Rd1 Ne4 13.Ne4+– Be4 14.Rd4 Bc2 15.Kd2 Bf5 16.g4 Be6 17.Bg2 Rc8 18.Bb7 Rb8 19.Be4 Ba2 20.Ra1+– Re8 21.f4 Be6 22.Bc6 Re7 23.g5 g6? 24.Kc3 a5 25.ba6 b5 26.a7 b4 27.Kb2 Ra8 28.Ba8 Re8 29.Bc6 Be7 30.Be8 b3 31.a8Q Bc5 32.Bd7 Bf8 33.Qf8! Kf8 34.Ra8 Ke7 35.Bf6 1–0. guest3672 – guest6040, ICC, 2005.

4.d4 e4

5.d5 Bb7 6.e3 a6 7.a4 ab5 8.Bb5 Nd7 9.c4 Nh6 (9...Qg5 10.g3=) 10.Nh3 Rg8 11.Nf4 Be7 (11...Qe7!?+/–) 12.Nd2+– Qc8 (12...Bf6!? 13.Bf6 Qf6 14.Ne4 Qe5+–) 13.Ne4 c6 14.dc6 Bc6 15.Nd5 Qb7? (15...Bb5 16.Ne7 Ke7 17.Qd6 Kd8 18.cb5 Qc4+–) 16.Ne7 Bb5 (16...Be4 17.Ng8 Ng8 18.Qd6 0–0–0+–) 17.Nd6 (17.Nd6 Ke7 18.Nb7 (18.ab5?! Qg2 19.Rf1 Nc5+=; 18.cb5?! Qg2 19.Rf1 Rgd8+=) 18...Bc4 19.Ba3 Kf6 20.Qd7+–) 1–0. Taulien,Hans_Juergen (2350) – Ritschel,Stephan (1935), remoteschach.de, 2002.

5.e3 a6 6.d5 =.

5.e3 d5 6.c4 Nf6 7.Nc3 Bb4 8.Qb3 Be7 (8...Bc3!? 9.Qc3 a6=) 9.cd5+/– Bg4 (9...Bd6 10.Bc4+/–) 10.Nge2 Bd6 11.a4 (11.Ng3 Qe7+/–) 11...Be2 (11...0–0 12.Ng3 Re8 13.Bc4+/–) 12.Be2 h5 (12...0–0!? 13.0–0+/–) 13.0–0+– g5 (13...Nbd7 14.Qc4+–) 14.f3 Qe7 15.Ne4 Nbd7? (better is 15...Ne4 16.fe4 Qe4+–) 16.Nf6 Nf6 17.e4 Nd7 18.e5 Bb4 19.Rfc1 Bd2 20.Rc7 f6 21.d6 Qh7 22.Qe6 Kf8 23.Rd7 Qd7 24.Qd7 Re8 25.Bc4 Be3 26.Kh1 (26.Kh1 Re6 27.Be6 Rh7 28.Qd8 Kg7 29.Qf6#; 26.Kf1 Rh7 27.Qh7 Re6 28.Be6 fe5 29.Qe7#) 1–0. Taulien,Hans_Juergen (2350) – Witt,Monika (1605), remoteschach.de, 2004.

5.e3 Nf6 6.c4 Be7 7.d5 0–0 8.Nd2 Nbd7 9.Nb3 a5 10.a4 Ne5 11.Nd4 Bb7 12.Nc6 Bc6 13.dc6 d5?? (better is 13...Re8=) 14.Be5+– Bb4 15.Ke2 Ng4 16.Bg3 Bc5 (16...Nf6 17.Rc1+–) 17.cd5 Qf6 18.h3 (better is 18.Rb1+–) 18…Qb2= (18...Qb2 19.Qd2 Qa1 20.hg4 Bb4–/+) 0–1. Jokmin,Alex – Lebduska,Daniel, RN–2010–0–00321, 2010.

4.e3 Bb7

5.d4 a6 6.de5+= de5 7.Be5 ab5 8.Bb5 Nd7 9.Nf3 c6 10.Bc4 b5 11.Bb3 Ngf6 (11...c5 12.Bd5 Bd5 13.Qd5+=) 12.Bb2 Bb4 13.c3 Be7 14.0–0 0–0 15.c4 b4 (15...Nc5 16.Nd4+=) 16.a3 c5 17.ab4 Ra1 18.Ba1 cb4 19.Nbd2 Bc5 (19...Nc5 20.Bd4+=) 20.Bd4+/– Qc7 (20...Qe7 21.Qb1+/–) 21.Qc2 Ra8 22.Rd1 h6 (22...Bd6 23.Qb2+/–) 23.Qb2 Bc6 (23...Be7 24.Ne5+/–) 24.Nh4 (24.Bc2 Bf3 25.Nf3 Bd4 26.Rd4 Rb8+/–) 24...Bd6 (24...Ng4 25.Ndf3+/–) 25.h3 Bb7 (25...Qa5 26.Qb1+/–) 26.Nf5 Qc6 27.f3 Bf8 28.Bc2 g6 29.Ng3. Van Rooijen,Peter – Bongiovanni,Claudio, IECG, 2003.

5.d4 ed4 6.Bd4 a6 7.Nf3 =.

5.d4 ed4 6.Bd4 Nf6 7.Nf3 c6 (7...a6 8.a4=) 8.a4 (8.Bd3 a6+=) 8...cb5 (8...a6 9.Bd3+=) 9.ab5 Be7 10.Bd3 Nbd7 (10...0–0 11.Qe2+/–) 11.Qe2 (11.0–0 Nc5+/–) 11...0–0 12.0–0 Ne5 (12...Qc7 13.Nbd2+=) 13.Ne5+/– de5 14.Be5 Bg2 (14...Qd5!? 15.f4 Qe6+/–) 15.Rd1+– (15.Kg2?! Qd5 16.Kg1 Qe5=) 15...Bd5 16.c4 Bb7 17.Bf6 (17.Bh7 Kh7 18.Rd8 Rfd8+–) 17...Bf6 18.Bh7! Kh7 19.Rd8 Rfd8 20.Ra3 Be7 (20...Kg8 21.Nd2+–) 21.Rd3 Be4 (21...a5 22.ba6 Ba6 23.Rd8 Rd8 24.Nc3+–) 22.Rd8 Rd8 23.Nc3 Bd3 (23...Ba8 24.Nd5 Bd5 25.Qd3 (25.cd5?! Rd5 26.Qc4 Rg5 27.Kf1 Kg8+–) 25...g6 26.cd5+–) 24.Qh5 Kg8 25.Nd5 Bc5 (25...Bd6 26.Qg4 f5 27.Qd4+–) 26.Qd1 Kh7 (26...Rd5 27.cd5 Bb5+–) 27.Qd3 (27.Qd3 Kh8 28.Kg2+–) 1–0. Van Rooijen,Peter (1700) – Garriz,Nicolas, LIAPE, 2002.

5.d4 h6 6.de5 de5 7.Qd8 Kd8 8.Be5 f6 9.Bd4 Bb4 10.c3 Bd6 11.c4 Nd7 12.Nd2 Ne7 13.Rd1 Nf5 14.Bc3 Be5 15.Bb4 c5 16.bc6 Bc6 17.Ngf3 Bc7 18.Nb3 Bf3 19.gf3 Ne7 20.Bh3 f5 21.Nd4 g6 22.Ne6 Kc8 23.Nc7 Kc7 24.Be7 (24.Be7 Rhe8 25.Bd6 Kc6 26.Rg1+–) 1–0. miehnekort – durirak, Yahoo, 2005.

5.Be2 Nf6 6.Nf3 Nd5 7.c4 Ne7 8.0–0 Ng6 9.d4 f6 10.d5 Be7 11.e4 0–0 12.Bc1 Nd7 13.Nbd2 Nc5 14.Nb3 Na4 15.Qc2 a6 16.Nbd2 ab5 17.cb5 Nc5 18.Nb3 Na4 19.Bc4 Qd7 20.Nbd2 Nc5 21.a4 Qg4 22.h3 Qh5 23.Nh2 Nf4 24.Nb3 Nh3 25.gh3+= Qh3? 26.Nc5+– dc5? 27.Be2 f5+/– 28.ef5 Rf5?? 29.Bg4+– Qh4 30.Qf5 Bf6 31.Qe6 Kh8 32.Nf3 1–0. OPA – hgflyer, Live Game Caissa's Web, 2004.

5.Nf3 a6 6.ba6 Na6 7.Bb5 c6 8.Be2 +=.

5.Nf3 Nd7 6.c4 f5 7.d3 Ngf6 8.Be2 h6 9.Nbd2 g5+= 10.h3 Bg7 11.d4 e4 12.Nh2 Qe7 13.Bh5 Nh5 14.Qh5 Qf7 15.Qf7 Kf7 16.Rb1 a6–/+ 17.a4 ab5 18.ab5 Ra2 19.Kd1 Rha8 20.Kc2 f4 21.Ra1 Nf6 22.Ra2= Ra2 23.Ra1 Ra1=+ 24.Ba1 d5 25.Kb3 dc4 26.Nc4 Bd5 27.Kc3 Bc4 28.Kc4= h5 29.d5 Bf8 30.Be5 Bd6 31.Bd6 cd6 32.ef4 gf4= 33.Nf1 Nd7 34.Nd2 Nc5? 35.Kd4+– e3 36.fe3 fe3 37.Ke3 Kf6 38.Kd4 Kf5 39.g3 Nd7 40.Nf3 Nc5 41.Nh4 Kf6 42.Nf3 Nb3?? 43.Kc4 Nc1 44.Nd2 Ne2 45.Ne4 Ke5+= (45...Ke5 46.Ng5 Kf6+=). Hugi – Epitaph, ICS blitz, 2000.

5.Nf3 Nd7 6.d3 Ngf6 7.Nh4 Be7 8.Be2 Nc5 9.0–0 Qd7 10.d4 (10.d4 Na4 11.Bc1=). pinecrest1981 – Nobleworld, Live Game Caissa's Web, 2005.

5.Nf3 Be7 6.c4 Nd7 7.d3 f5 8.Be2 Ngf6 9.h3 0–0= 10.Nbd2 Nc5 11.0–0 e4 12.de4 Nfe4 13.Nd4 Nd2 14.Qd2 Bg5 15.Qc3 Na4 16.Qb3 Nb2 17.Qb2 Bf6 18.Qc2 Be4 19.Bd3 Bd4 20.ed4+= Bd3 21.Qd3 Qf6 22.Rfe1 f4 23.Re4 f3 24.g3 Qf5 25.Kh2 a6 26.Re3 ab5 27.cb5 Qd3 28.Rd3 Rae8 29.g4+= Re4 30.Kg3+/– g6 31.Rad1 Ref4 32.Rc3 R8f7 33.Rdd3 Kg7 34.Rf3+– Rf3 35.Rf3 Rf3 36.Kf3 Kf6 37.h4 Ke6 38.Ke4 d5 39.Kf4 h6 40.Ke3 c5 41.dc5 bc5 42.a4 Kd6 43.f4 Kc7 44.a5 Kd6 45.Kd3 Kc7 46.f5 gf5 47.gf5 Kd6 48.f6 1–0. mic (2100) – johnb (2190), net–chess.com, 2008.

5.Nf3 Be7 6.c4 Bf6 7.d4 Nd7 8.Nc3 (8.Be2 a6+=) 8...ed4= 9.Nd4 Ne7 10.f3 0–0 11.Ne4 (11.Bd3 c5 12.bc6 Nc6 13.Nc6 Bc6=) 11...Be5 (11...Be4 12.fe4 Bh4 13.g3+=) 12.Bd3= Nc5 13.Qc2 g6 (13...Nd3 14.Qd3 a6 15.f4+=) 14.0–0 (better is 14.Nc5 bc5 15.Nb3 Bb2 16.Qb2+=) 14...Nf5 (14...Nd3 15.Qd3 a6 16.Nc3=) 15.Nf5 (better is 15.Nc5 bc5 16.Nf5 Bb2 17.Qb2 gf5 18.Bf5+–) 15...Bb2?? (15...Nd3!? 16.Be5 Ne5=) 16.Nh6 (better is 16.Qb2 f6 17.Nc5 dc5 18.Rad1 gf5 19.Bf5+–) 16...Kg7+/– 17.Qb2 Kh6 18.Nc5 dc5 19.Rad1 Qg5 20.e4 Rad8 21.f4 Qe7 22.Rf3 f6 23.Qe2 Kg7 24.f5 Rfe8 25.fg6 Be4? 26.Re3+– Bd3?? 27.Re7 Kf8 28.g7 Kg8 29.Re8 Re8 30.Qe8+– Kg7 31.Rd3 (31.Rd3 a6 32.Rg3 Kh6 33.Qe6 ab5 34.Qh3#) 1–0. Meyer,Ingo (2235) – Loghin,Francisc, Vienna op–C, 2003.

5.Nf3 f5 6.Be2 Be7 7.d4 e4 8.Nfd2 Nf6 9.c4 0–0 10.Nb3 Nbd7 11.a4 a5 12.d5 Qe8 13.Nd4 Qg6 14.0–0 Nc5 15.Ba3 Bc8 16.Nc6 Rf7 17.g3 Bb7 18.Nc3 h5 19.Bc5 bc5 (19...dc5? 20.Ne5 (20.Ne7?! Re7 21.Qc2 Rd8=) 20...Qg5 21.Nf7 Kf7 22.Kh1+–) 20.Kh1 Kh7 21.Rb1 Ng4 22.Bg4 hg4 (worse is 22...fg4 23.Qc2+/– (23.Ne7?! Re7 24.Ne2 Qf5=)) 23.Ne2 Bg5 24.b6 Qh6 25.Qd2 Kg6? (25...cb6 26.Rb6 Rh8 27.Ne5= (27.Qa5 Kg8 28.Qa8 Ba8 29.Rb8 Rf8 30.Ne7 Be7 31.Rf8 Kf8 32.h4 Bh4 33.Kg2 Bg3 34.Rh1 Qh1 35.Kg3 Qf3)) 26.Rg1 (better is 26.Na5!? Rb8 27.bc7 Rc7 28.Rb6+/– (28.Nb7?! Rcb7 29.Rb7 Rb7+/–; worse is 28.Rb7 Rcb7 29.Nb7 Rb7+/–)) 26...cb6= 27.Rb6 Bc6 28.dc6 Rh8 29.Rg2 Kh7 30.Nc3 Bd8 31.Rb7 Rb7 32.cb7 Bg5 33.Nd5 Rb8= 34.Qb2 Qe6 35.Rg1 Qd7 36.Rb1 Qa4 The passed pawn on a5 will quickly become a dangerous weapon 37.Nb6 Qc6 38.Nc8 Bd8 39.Qb5 Qc7 40.Na7 a4 41.Nc6 a3 42.Nb8 Qb8 43.Qa4 Bc7 44.Qa3 Qd8 45.Qa4 d5 46.cd5 f4 47.Qe4 Kh8 48.ef4 Bb8 49.Kg2 (49.Kg2 Qf8 50.Qg6+–; better is 49.Re1 Qf6+–) 1–0. Gumilevskaja,Galina (2060) – Gontcharova,Irina, RUS–ch 1L (Women), 2000.

5.Nf3 Nf6 6.c4 Nbd7 7.Be2 Be7 8.0–0 h6 9.a4 0–0 10.Na3 Ne4 (10...Nc5 11.d4 ed4 12.ed4+=) 11.d3 Ng5 12.d4 Nf3 (12...ed4 13.Nd4 (worse is 13.Qd4 Bf6 14.Qd2 Nf3 15.Bf3 Bf3 16.gf3 Bb2 17.Qb2 Qg5 18.Kh1 Qh5–+) 13...Bf6 14.Nac2=) 13.Bf3= Bf3 (13...e4 14.Be2=) 14.Qf3 f5 (14...Bg5 15.Nc2+=) 15.Qd5+= Kh8 16.Nc2 Nf6 (16...a5!?+=) 17.Qc6+/– Nd7 18.Nb4 Qc8 (18...ed4!? 19.ed4 Bg5+/–) 19.Nd5+– Bd8 20.a5 ba5 (20...ed4 21.ed4 ba5 22.Rfe1+–) 21.Ra5 a6? (21...ed4 22.Bd4 Ne5 23.Be5 de5+–) 22.de5 de5 (22...Ne5 23.Be5 de5 24.ba6+–) 23.Rd1 Nf6 (23...Nb6 24.Be5 Qd7 25.Qd7 Nd7 26.Bc7+–) 24.Be5 Rf7 (24...Ng4 25.Bd4 Bf6 26.Nc7+–) 25.Ra6 Ra6 (25...Rb8 26.Nb6! cb6 27.Bb8 Qb8+–) 26.ba6 Qb8 (26...Ng4 27.a7 Ne5+–) 27.Ra1 (27.Ra1 Qc8 28.a7+–) 1–0. pierre – albycoccax, internet, 2015.

5.Nf3 Nf6 6.Bc4 a6 =.

5.Nf3 Nf6 6.Be2 a6 7.a4 (7.ba6 Na6 8.d4 e4=) 7...Be7 8.0–0 0–0 9.c4 Nbd7 (9...e4 10.Nd4=) 10.d4 ed4 (10...e4 11.Nfd2=) 11.ed4 (11.Qd4 Nc5 12.Nbd2 Qd7=) 11...ab5 (11...d5 12.Nc3=) 12.ab5 (12.cb5 Nd5=) 12...d5 (12...Ra1 13.Ba1 d5 14.Nc3=) 13.cd5 (13.Ra8 Ba8 14.Ne5 Bd6=) 13...Nd5 (13...Ra1 14.Ba1 Re8 15.Nc3=) 14.Nc3 (14.Ra8 Ba8 15.Nc3 Re8=) 14...N7f6 (14...Ra1 15.Qa1 Nf4 16.Bd1+=) 15.Qb3 (15.Nd5 Bd5 16.Ra8 Qa8=) 15...Nf4+= 16.Rfc1 (16.Ra8 Ba8 17.Ra1 Ne2 18.Ne2 Bd5=) 16...Ne2 (16...Qd6 17.Qc2+=) 17.Ne2 Bd6 (17...Ra1 18.Ra1 Bd6 19.Ne5=) 18.Ne5 Bd5 (18...Ra1 19.Ra1 Bd5 20.Qh3=) 19.Qd1 (19.Qh3 Re8=) 19...Re8 20.Nc6? (20.Nf4 Be4=) 20...Bc6 (20...Bh2 21.Kf1 Bc6 22.Rc6 Ra1 23.Ba1–+) 21.Rc6 (21.bc6 Ra1 22.Ra1 Re6+=) 21...Ra1–/+ 22.Ba1 Qe7 (22...Nd5 23.Ng3–/+) 23.Rc2 Ng4 (23...Nd5 24.h3–/+) 24.g3 (24.h3 Qh4 25.Nc1 Bh2 26.Kf1 Nf6+=) 24...Qf6 (24...Nf6 25.d5+=) 25.Qf1 (25.Nc3 Qg5=) 25...Qf3 (25...Qf5 26.Rb2–/+) 26.h3 Nf6 27.Bc3? (better is 27.Nc3+=) 27...Qd3 28.Rb2 Nd5 29.Be1 h6 30.Kg2 Ba3–+ 31.Ra2 Qb5 32.Ra3 Qe2 33.Qe2 Re2 34.Kf1 Re4 35.Rd3 f5 36.f3 Re3 37.Re3 Ne3 38.Ke2 Nd5 39.Kd3 Kf7 40.Bd2 g5 41.h4 f4 42.gf4 gh4 43.Be1 h3 44.Bg3 Kf6 45.Bh2 Kf5 46.Kc4 c6 47.Kd3 b5 48.Kd2 h5 49.Kd3 h4 50.Kd2 b4 51.Kc2 Ne3 52.Kb3 Nf1 53.Bg1 h2 54.Bh2 Nh2 55.Kb4 Nf3 (55...Nf3 56.Kc5 h3–+) 0–1. Bittner – Grubert, corr, 1987.

5.Nf3 h6 6.c4 Nf6 7.Be2 Nbd7 8.0–0 Be7 9.d4 0–0 10.de5 de5 11.Ne5 Ne5 12.Be5 Qd1 13.Rd1 c6 14.Bf3 Rac8 15.Nc3 Nd7 16.Rd7 Rfe8 17.Rb7 Bb4 18.Rb1 Re5 19.Rb4 cb5 20.Bd5 Rf5 21.Rb5 Kf8 22.Ra7 Rf6 23.Ne4 Rg6 24.Bf7 black timed out 1–0. pierred (2765) – lincolnxavi, net–chess.com, 2014.

4.e3 Nd7

5.c4 a6 6.a4 (6.Be2 Ngf6=) 6...Bb7 (6...ab5 7.cb5 d5 8.Nf3+=) 7.Nc3= Ngf6 8.Nf3 Qe7 (8...Be7 9.Be2=) 9.Be2 (9.a5 ba5 10.Ra5 ab5 11.Ra8 Ba8 12.Nb5 Nc5+=) 9...g6 (9...a5 10.Qc2=) 10.0–0 (10.a5!? Bg7 11.ab6 cb6 12.ba6 Ra6 13.Ra6 Ba6 14.0–0+=) 10...Bg7= 11.Qc2 0–0 12.d4 ed4 13.Nd4 Ne5 14.e4 Rfe8 (14...Ned7 15.Nc6 Qe8 16.Rfe1+=) 15.Nd5+= Nd5 (15...Qd8 16.f3+=) 16.cd5+/– Bc8 (16...h5 17.h3+=) 17.Rac1 (better is 17.a5 Ng4 18.Bg4 Bg4 19.ab6 cb6 20.Ra6+–) 17...Ra7?? (better is 17...Nd7 18.Qc7 Nc5 19.Qe7 Re7+=) 18.f4+– Ng4? (18...c5 19.bc6 Ng4 20.Bg4 Bg4+–) 19.Bg4 (better is 19.Nc6 Qe4 20.Bg4 (20.Na7?! Qe3 21.Kh1 Bf5+=) 20...Qe3 21.Kh1 Bg4 22.Bg7 Kg7 23.Na7+–) 19...Bd4+= (19...Bg4?? 20.Nc6 Qe4 21.Na7 Qc2 22.Rc2+–) 20.Bd4 Bg4 21.Rfe1 ab5 22.ab5 Qd8 (better is 22...Rea8!?+=) 23.Qc3+– Qh4 24.g3 (24.Bf6 Qh6 25.e5 Qf8+– (25...Qf4?? 26.ed6 Rc8 27.Be5+–)) 24...Qh6 (24...Qe7 25.Bh8 Qf8 26.Bf6+=) 25.e5 (25.Ra1 Ra1 26.Ra1 g5+/–) 25...de5 26.Be5 (26.Qc6 Qf8 27.fe5 Rea8+/–) 26...Qf8 (26...Ra2!? 27.h4 Qf8+=) 27.Qc6 (27.Qc6 Qe7 28.Bc3+/–) 1–0. Nikolic,Jovane (1710) – De Albuquelque,Gabriel Tenori (1800), Mogi das Cruzes Brazil, Open, 2013.

5.Qf3 Rb8 6.Bc4 Ngf6 7.Nh3 (7.Nc3 Bb7 8.Nd5 Be7=) 7...e4 8.Qg3 Ne5 (8...d5 9.Bb3=) 9.Be5+= de5? (better is 9...Bh3 10.Bf6 Qf6+/–) 10.Ng5+– (10.Qe5?! Qe7 11.Qe7 Be7+/–) 10...Be6 11.Ne6 fe6 12.Be6 (12.Qe5 Qd6 13.Qe6 Qe6 14.Be6 Bd6+–) 12...Qe7 13.Bb3 g6 14.Nc3 Bg7 15.0–0 Rd8 16.Rad1 Kd7 17.Qh3 Ke8 18.d3 Qc5? (18...ed3 19.Rd3 Rd3 20.cd3 Qd7+–) 19.Qe6 Qe7 20.Qc6 Rd7 (20...Qd7 21.Qc4 Bf8+–) 21.Ne4 Qd8 22.f4 Ne4 (22...ef4 23.Nf6 Bf6 24.Rf4 Bg5+–) 23.de4 (23.de4 ef4 24.Be6+–) 1–0. b4_player – albert, internet, 2013.

4.e4 Bb7

5.Nc3 Nf6 6.Bc4 d5 7.ed5+/– Nd5?? 8.Qg4 g6?? 9.Qf3+– Nf4 10.Qb7 Ng2 11.Qg2 Nd7 12.Qf3 f5 13.Nd5 Nc5 14.Be5 Ne4 15.Nc7 Ke7 16.Qa3 Nc5 17.Nd5 Ke6 18.Nf4 Ke5 19.Qe3 Kf6 20.Nf3 Bh6 21.Qe5# 1–0. blacksteelpipe – heath, Live Game Caissa's Web, 2005.

5.Bd3 Nf6 6.Qe2 Be7 7.Nf3 0–0 8.0–0 Nbd7 9.Nc3 Nc5 (Now all is on e4) 10.Rae1 Re8 11.Bc4 (11.Ng5 h6 12.Nf3 Qd7=) 11...Qd7 (11...Nce4 12.Ne4 Ne4–/+ (12...Be4?! 13.Bf7 Kf7 14.Ng5 Kg8 15.Ne4=)) 12.Ng5+= Rf8 13.f4 h6 14.fe5 de5 15.Nf3 Rad8 (15...Bd6!?+=) 16.Nd5+/– Nd5 17.ed5 (17.Ne5 Qe6+/–) 17...Bd5 18.Ne5 Qd6? (better is 18...Bc4!? 19.Qc4 Qe6+/–) 19.Bd5+– Qd5 20.Nc6 Bg5 21.Nd8 (21.Nd8 Rd8 22.Qf2+–) 1–0. Tiedemann,Joern (2020) – Ziebarth,Susanne, RSS7E basic–43, 2011.

4.e4 Nf6

5.Nc3 Bb7 6.d3 Nbd7 7.Nf3 Be7 8.Be2 0–0 9.0–0 a6 10.a4 ab5 11.Nb5 Bc6 12.c4 Bb5 13.cb5 Nc5 14.d4 ed4 15.e5 de5 16.Ne5 Ne6 17.Bf3 Nd5?? 18.Nc6+– Qd7 19.Ne7 Ne7+= 20.Ba8 Ra8 21.Qg4 Rd8 22.Rad1 c6 23.Rfe1 cb5 24.ab5 Qb5 25.Bd4 Nd4 26.Re7 h5 27.Qe4 Qa4 28.Re1 Qb4 29.Re8 Re8 30.Qe8 Kh7 31.Rd1 f6?? 32.Qe4 1–0. CRAIG – Gambitman, ChessWorld.net, 2002.

5.Nc3 Bb7 6.d4 ed4 7.Qd4 Qe7 (e4 becomes the focus of attention) (7...Be7!?=) 8.Bc4+/– Ne4? (8...c5 9.Qd3+/–) 9.0–0–0?? (better is 9.Nd5 Qe5 10.Qe5 de5 11.Nc7 Kd8 12.Na8 Bb4 13.Ke2 Ba8 14.Nf3+– (14.Be5?! Nd7 15.Bf4 Re8+=; 14.Bf7?! Nd6 15.Bb3 Bg2+/–)) 9...Nc3 10.Qc3 Bg2? (better is 10...Nd7 11.Nf3 0–0–0+/–) 11.Nf3+– Bh1 12.Rh1 Kd8 13.Re1 Qd7 14.Bd5 c6 15.bc6 Qf5 (15...Nc6 16.Ng5 Kc7 17.Nf7 Re8 18.Re8 Qe8 19.Nh8 Be7 20.Qg7 Qh5 21.Bc6 Qg5 22.f4 Qf4 23.Kb1 Qf1 24.Bc1 Qf6 25.Qf6 Bf6+–) 16.c7 Kc8 17.Re8 Kd7 18.c8Q# 1–0. Taulien,Hans_Juergen (2350) – Steingraeber,Barbara (2240), remoteschach.de, 2002.

5.Nc3 Bb7 6.f3 a6 =.

5.Nc3 Nbd7 6.Nf3 Bb7 7.d3 Be7 8.a4 0–0 9.Be2 d5 10.ed5 Nd5 11.0–0 Nf4 12.d4 (12.Ne4 f5 13.Ng3 a6=) 12...Ne2 (12...ed4 13.Qd4 Ne2 14.Ne2–/+) 13.Ne2 (13.Qe2 ed4 14.Nd4 Re8=) 13...ed4 (13...Bf3!? 14.gf3 Bd6+=) 14.Ned4= (worse is 14.Qd4 Bf6 15.Qb4 Bf3 16.gf3 Re8–/+) 14...Nc5 (14...Bf6!?=) 15.Nf5+= Bf6 16.Qd8 Rad8 17.Bf6 gf6 18.Ne7 (18.N3d4!?+/–) 18...Kh8= 19.Rfe1 Bf3 20.gf3 Ne6 21.Nc6 Ra8 22.Rad1 Nc5 23.Kg2 Ne6 (23...Na4!? 24.Ra1 Nc3 25.Na7 Rg8 26.Kf1 Rg5+=) 24.Rd7 Rg8 25.Kf1 Rgf8 26.c4 a6 27.h4 ab5 28.ab5 Ra4 29.Rc1 Ra3 30.f4 (30.Nd4 Nd4 31.Rd4 Rf3+=) 30...Rf3 (30...Nf4!? 31.Rcd1 Rh3–/+) 31.f5= Rf5 32.Ne7 (32.Nd4 Nd4 33.Rd4 Ra8=) 32...Rh5+= 0–1. Stevenson,Michael D – James,Peter J, NZCCA CT9704, 1997.

5.Bc4 Qe7 6.Nc3 Bb7 7.d3+= g6 8.Nf3 Bh6 9.0–0 a6 10.d4 0–0 11.de5 de5 12.Nd5 Qc5?? 13.Nf6+– Kh8 14.Ne5 Qe7 15.Nc6! Nc6 16.Nd5 Bg7 17.Ne7 (17.Ne7 Ne7 18.Bg7 Kg7 19.ba6+–) 1–0. keeneeb – wkowalski, net–chess.com, 2006.

4.Nf3 Bb7

5.e3 f5 6.Be2 Be7 7.d4 e4 8.Nfd2 Nf6 9.c4 0–0 10.Nb3 Nbd7 11.a4 a5 12.d5 Qe8 13.Nd4 Qg6 14.0–0 Nc5 15.Ba3 Bc8 16.Nc6 Rf7 17.g3 Bb7 18.Nc3 h5 19.Bc5 bc5 20.Kh1 Kh7 21.Rb1 Ng4 22.Bg4 hg4 23.Ne2 Bg5 24.b6 Qh6 25.Qd2 Kg6? 26.Rg1 cb6= 27.Rb6 Bc6 28.dc6 Rh8 29.Rg2 Kh7 30.Nc3 Bd8 31.Rb7 Rb7 32.cb7 Bg5 33.Nd5 Rb8= 34.Qb2 Qe6 35.Rg1 Qd7 36.Rb1 Qa4 37.Nb6 Qc6 38.Nc8 Bd8 39.Qb5 Qc7 40.Na7 a4 41.Nc6 a3 42.Nb8 Qb8 43.Qa4 Bc7 44.Qa3 Qd8 45.Qa4 d5 46.cd5 f4 47.Qe4 Kh8 48.ef4 Bb8 49.Kg2 (49…Qf8 50.Qg6+–; better is 49.Re1 Qf6+–) 1–0. Gumilevskaja,Galina (2060) – Gontcharova,Irina, RUS–ch 1L (Women), 2000.

5.g3 Nf6 6.c4 c5 7.Bg2 Qd7 8.0–0 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Be7 12.Nc3 0–0 13.Qa4 Qc7 14.Qa7 Nbd7 15.Ne5 Ne5 16.Qb7 (16.Bb7? Rb8–+ (16...Nc4?! 17.Qa6+=)) 16...Qb7 17.Bb7 Nc4 18.d3 Nd2 19.Rd1 Nb3 20.e3 Nd7 (20...Rb8 21.Bc6+/–) 21.Nd5 Bd8 22.Bc3 Na5 (22...Nf6 23.Bf6 Bf6 24.Nf6 (24.Nb6?! Rb8 25.Bd5 Rb6 26.Bb3 Rb5=) 24...gf6 25.Bd5+/–) 23.Bc8+– Nf6 24.Bf6 gf6 25.Bd7 Kg7 26.Kg2 Kg6 27.h4 h5 28.Nf4 Kh6 29.Bc6 c4 (29...Nc6 30.bc6 Bc7 31.Ra1+–) 30.dc4 Nc4 31.Bf3 f5 (31...Be7 32.Bh5 Ne5 33.Nd5+–) 32.Be2 Na3 (32...Ne5 33.Rd6 Kg7 34.Nh5 Kh8 35.Bd3+–) 33.Ra1 Nc2 (33...Nb5 34.Bb5 Bf6 35.Ra7+–) 34.Ra2 Nb4 35.Rb2 Rg8 36.Kf3 1–0. Wiese,Uwe (2330) – Manski,Stefan (1790), remoteschach.de, 2009.

4.g3 Bb7=+

5.f3 a6 6.e4 =+.

5.f3 Qf6 6.Bg2 (6.e4 a6=) 6...g6 (6...a6 7.a4=+) 7.e4 Bg7 8.Ne2 Ne7 9.d4 ed4?? (Better is 9...a6=) 10.Bd4+– (10.Nd4 c5 11.Nf5 Qb2 12.Nd6 Kf8 13.Nb7 Bd4–+ (13...Qb5?! 14.Qd8 Qe8 15.Qe8 Ke8 16.c3=); 10.Qd4?! Nd7=) 10...Qd4 11.Nd4 c5 12.c3 cd4 13.cd4 0–0 14.0–0 a6 15.Nc3 ab5 16.Nb5 Ba6 17.Nd6 Bf1 18.Qf1 Nbc6? 19.Qb5 Bd4–+ 20.Kf1 Ba1 21.a4 Ra5 22.Qb6 Rb8 23.Qe3 Ra4 24.g4 Rb1 25.Kf2 Bd4 26.Qd4 Nd4 27.Ke3 Nc2 28.Kf4 Ra6 29.Nc4 Rf6 30.Ke5 Re6 31.Kf4 Rb4 32.Ne5 f5 33.gf5 gf5 34.Bh3 Ng6 35.Kf5 Re5 36.Kg4 Ne3 37.Kg3 Rg5 38.Kf2 Nd1 39.Ke2 Nc3 40.Kd3 Na2 41.Be6 Kg7 42.Ba2 Rg2 43.h4 Nh4 44.Bd5 Nf3 45.Ke3 Ne5 46.Kf4 Nd3 47.Kf5 h5 48.e5 Ne5 49.Ke5 h4 50.Bg2 Rb2 51.Bh3 Rh2 52.Bg4 h3 53.Kf4 Rh1 54.Kg3 h2 =+. MasterofDisaster – johmul, Live Game Caissa's Web, 2004.

5.Nf3 e4 6.Nh4 e3 7.Bg2 ef2 8.Kf2 Bg2 9.Ng2 Nf6 10.Rf1 d5 11.Kg1 Bc5 12.e3 0–0?? (12...Nbd7 13.Qf3=) 13.Nc3?? (Better is 13.Bf6!? gf6 14.Qg4 Kh8 15.d4+–) 13...Ne4 (Better is 13...a6=) 14.Ne4+– de4 15.d4 Bd6 16.Nf4 c5 17.d5 Qd7 18.Nh5 f6 19.Bf6 gf6 20.Rf6 Be5 21.Rf8 Kf8 22.Qf1 Qf7 23.Qh3?? Ba1 24.Qc8 Qe8 25.Qb7 Nd7 26.Qc7 Rc8 27.Qf4 Qf7 28.Qh6 Bg7 29.Ng7 Qg7 30.Qd6 Qe7 31.Qf4 Qf6 32.Qe4 Re8 33.Qh7 Re7 34.Qh3 Rf7 35.Qg2 Qa1 0–1. MasterofDisaster – serginho111, Live Game Caissa's Web, 2004.

5.Nf3 Nf6 6.Bg2 Nbd7 7.0–0 Be7 8.d3 0–0 9.e4 Nc5 10.h3 a6 11.c4 Qd7 12.Nc3 ab5 13.cb5 Ra7 14.a4 Rfa8 15.d4 ed4 16.Nd4 Be4 17.Be4 Nce4 18.Ne4 Ne4 19.Nc6 Qh3?? (Better is 19...Bf6 20.Bf6 Nf6=) 20.Ne7+– Kf8 21.Ng6?? (Better is 21.Nc6 Rb7 22.Re1+–) 21...hg6 22.Qf3 (Better is 22.Qd4 Nf6 23.Rfe1–/+) 22...Nd2?? 23.Qg2?? Qg2–+ 24.Kg2 Nf1 25.Rf1 Ra4 26.Bc1 R8a5 27.Rh1 Kg8 28.Re1 Ra1 29.Re8 Kh7 30.Be3 Rb5 31.Re7 c5 32.Rf7 Re1 33.Bf4 Rbb1 34.Bd6 Rh1 35.Be5 Rhg1 36.Kf3 Rb3 37.Ke2 Rc1 38.Rg7 Kh6 39.Rg8 Rc2 40.Kf1 Rb1 41.Kg2 c4 42.Bf4 Kh5 43.Rh8?? Kg4–+ 44.Rh4 Kf5 45.Rh8 g5 46.Rf8 1–0. MasterofDisaster – arturn3, Live Game Caissa's Web, 2004.

3.b5 c5

4.Nc3 Nf6 5.e4 Be7 +=.

4.c4 f5 5.e3 Nf6 6.d4 (6.Nc3 Be7=) 6...ed4 (6...cd4 7.ed4 Qc7 8.Nh3=) 7.ed4= Be7 8.dc5 dc5 9.Qd8 Bd8 10.Nf3 0–0 11.Be2 Re8 12.Nc3 Ba5 13.Nd2 b6 14.f3 Nbd7 15.Kf2 (15.Nb3 Bb4=) 15...Ne5+= 16.Nb3 Bc3 17.Bc3 Bb7 (17...Neg4 18.Ke1 Ne3 19.Bf6 gf6 20.Kf2+=) 18.Be5 Re5 19.Rhe1 Rd8 20.Rad1 Rde8 21.Bd3 Re1 22.Re1 Re1 23.Ke1 g6 24.Ke2 Kf7 25.Nc1 Ke6 26.Ke3 g5 27.g3 Ke5 28.Ne2 h6 29.h3 Nh5 30.f4 Ke6 31.g4 Ng7 32.Ng3 gf4 33.Kf4 fg4 34.hg4 Kf6 35.Be4 Ne6 36.Ke3 Be4 37.Ne4 Ke5 38.Nf2 Nf4 39.Nd1 Ng2 40.Kf2 Nf4 41.Ke3 h5 42.gh5 Nh5 43.Nf2 Nf4 44.Nd3 Nd3 45.Kd3 Kf4 46.a3 Kf3 47.Kc3 Ke3 48.Kc2 Kd4 49.Kb3 Kd3 50.a4?? Kd4–+ 51.a5 Kd3 52.ab6 ab6 53.Kb2 Kc4 54.Kc2 Kb5 55.Kb3 c4 (55...c4 56.Kc3 Kc5–+) 0–1. Mittelstaedt,Joel – Gering,Samuel (1650), GER–chT WK U18 4th, 2008.

4.c4 Nf6=+ 5.a4 b6 6.Nc3 a5 7.g3 Bb7 8.f3 e4 9.Bg2+= ef3 10.Nf3 Nbd7 11.0–0 Rb8 12.Qc2 Be7 13.d3 0–0 14.e4 Ne5 15.Nd5 Bd5 16.ed5 Neg4 17.Rfe1 Re8 18.Qc3 Bf8 19.h3 Nh6 20.g4 Nd7 21.Re8 Qe8 22.Re1 Qd8 23.Bc1 f6 24.Bh6+– gh6 25.d4 Bg7 26.Qd3 cd4 27.Nd4+– Ne5 28.Qf5 Qc8 29.Ne6 Qc4+/– 30.Be4 Ng6 31.Ng7 Kg7 32.Qd7 Kh8 33.Qd6+= Qd4 34.Kh1?? Re8–+ 35.Qd7 Re7?? 36.Qd8? Kg7–+ 37.d6 Re6?? 38.Qd7 Re7 39.de7 Qd7 40.Bc6?? Qe7=+ 41.Re7 Ne7 42.Kg2 Ng6 43.Kg3 Kf7 44.h4 Ke6 45.h5= Ne5 46.Be4 Nc4 47.Bh7 Nb2 48.Bc2= Ke5 49.Kf3 Kd5? 50.Kf4+– Kc4 51.Kf5 Kb4 52.Kf6 Na4 53.g5 hg5 54.h6 Kb5 55.h7 Nc5 56.h8Q a4 57.Qe8 Kb4 58.Ba4! Na4 59.Qe4 Ka5 60.Qd5 b5 61.Kg5 Nc3 62.Qb3 b4 63.Kf4 Kb5 64.Ke3 Na4 65.Kd4 Nb6 66.Qd3 Ka5 67.Kc5 Na4 68.Kc6 Nc3 69.Qc4 Ka4 70.Kc5 (70.Kc5 Ka3 71.Qb4 Ka2 72.Qc3 Kb1 73.Kb4 Ka2 74.Qd2 Kb1 75.Kc3 Ka1 76.Qb2#) 1–0. mic (2100) – geldridge (2170), net–chess.com, 2008.

4.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 c5).

3.b5 c6

4.a4 a5 5.c4 b6 6.e3 Nf6 (6...Bb7 7.Nc3 Nf6 8.Nf3 Nbd7 9.Be2 c5 10.0–0 Be7 11.Qc2 0–0; 6...cb5 7.ab5 Nf6 8.Nc3 Nbd7 9.Be2 Be7 10.Nf3 0–0 11.0–0 Bb7; 6...Ne7 7.Nc3 Bf5 8.Nf3 g6 9.e4 Bd7 10.Ba3 c5 11.Bd3 Bg7; 6...Bf5 7.Nc3 Nf6 8.Nge2 Qd7 9.Ng3 Bg6 10.Qf3 Be7 11.Be2 0–0; 6...Be7 7.Nf3 cb5 8.ab5 Nf6 9.Nc3 Nbd7 10.Qc2 0–0 11.Be2 Qc7) 7.Nf3 (7.Nc3 Bf5 8.Nf3 Be7 9.Be2 0–0 10.0–0 cb5 11.ab5 Nbd7) 7...Bg4 (7...e4 8.Nd4 Bb7 9.Nc3 c5 10.Nf5 Nbd7 11.Qc2 Ne5) 8.Be2 (8.h3 Bf5 9.Nc3 Be7 10.d4 0–0 11.g4 Bg6) 8...Be7 9.0–0 (9.Nc3 0–0 10.h3 Bf5 11.0–0 Qc7) 9...0–0 (9...cb5 10.ab5 Nbd7 11.h3 Bf5) 10.d4 (10.Nc3 cb5 11.h3 Bf5) 10...Bf3 (10...cb5 11.ab5 Nbd7) 11.Bf3 e4 12.Be2 d5 13.Nc3 Qc7 14.Qb3 Nbd7? (14...dc4 15.Qc4 Rc8 16.d5 cb5 17.Qc7 Rc7 18.Bb5+/–) 15.Rfc1 (15.bc6 Qc6 16.cd5 Qc7+–) 15...h5? (15...dc4!? 16.Qc4 Rac8+/–) 16.cd5 (16.bc6 Qc6 17.cd5 Qb7+–) 16...c5+/– 17.Ba3 Bd6 18.h3 Rae8 19.dc5 Bc5 20.Bc5 Nc5 21.Qc4 Qd6 22.Qa2 Re5 23.Rd1 h4 24.Bc4 Nh7 ˝–˝. Schwichtenberg,Juergen (1870) – Ludwig,Siegfried (1655), Halle GER, 2011.

4.a4 a6 5.c4 Bd7 6.Qb3 ab5=+ 7.ab5 Ra1 8.Ba1 Qa5 9.Bc3= Qb6 10.e3 Be6 11.Qa4 Nd7 12.Qa8+/– Ke7?? 13.Ba5+– Qc5 14.Qd8# 1–0. Huelle – Haense, Leipzig, 2000.

4.a4 b6 5.e3 Nf6 6.Nf3 Bg4 7.Be2 Ne4 8.0–0 Bf3 9.Bf3+/– d5 10.d3 Nf6 11.Be5 Bd6 12.Bd6 Qd6 13.d4 0–0 14.Nd2 Nbd7 15.Bg4 Ng4 16.Qg4 Nf6 17.Qg3 Qb4 18.Nf3 cb5 19.Rfb1 Qc3 20.Rc1 Ne4 21.Qe5 Qc6 22.ab5+= Qb5 23.Rab1 Qd7 24.c4+= Rfe8 25.Qd5+/– Qc7 26.c5 Rad8+/– 27.Qa2 Rc8 28.h3 Qe7 29.cb6 ab6 30.Rc8 Rc8 31.Rb6 Rc1 32.Kh2 Qc7? 33.Ne5 h6 34.Qa8 Kh7 35.Qe4 g6 36.Rg6! fg6 37.Qg6 (37.Qg6 Kh8 38.f4+–) 1–0. tanto (1665) – blackswan, net–chess.com, 2002.

4.a4 Bd7 5.e3= a6 6.c4 g6 7.Nc3 Bg7 8.Qc2 Nf6 9.d3 0–0 10.Be2 Re8 11.Rc1 Re7 12.Nf3 Qe8 13.Nd2 ab5 14.ab5 cb5 15.Nde4 Ne4 16.de4 bc4 17.Nd5 Ba4 18.Ne7+= Qe7 19.Qc4 Nc6? 20.Ra1+– Qd7?? 21.Ra4 Rb8 22.Qb5 Qc7 23.0–0 Bf6 24.Rfa1 Bd8 25.Ra8 Ra8 26.Ra8 Kg7 27.g3 b6 28.f4 Ne7 29.Qa6 Nc6 30.Qc8 Ne7 31.Qd8 Qc2 32.Qe7 Qe2 33.Qf8 Kf6 34.Qd6 Kg7 35.Be5 Kh6 ˝–˝. Dilz,Jasmin – Nguyen Minh,Thuy, Willingen GER Ch U12, 2005.

4.a4 Nd7 5.e3 g6 6.Nf3 Bg7 7.Be2 Ngf6 8.0–0 0–0 9.d3 d5 10.Ne5+/– Ne8 11.d4 Ne5 12.de5 Qc7 13.f4 f6 14.c4 Be6 15.Qc2 fe5 16.cd5 Bd5 17.e4 Be6 18.fe5 Rf1 19.Kf1 Be5 20.h3 Qg7 21.Be5 Qe5 22.Ra3 Rc8 23.Rc3 c5 24.Nd2 Nd6 25.Bc4 Nc4 26.Nc4 Rd8?? 27.Ne5+– b6 28.Rd3 Rf8 29.Kg1 Rf4 30.Rd6 Bf7 31.Nf7 Rf7 32.Qc4 Kg7 33.e5 Re7 34.e6 Kf8 35.Qc3 Rg7 36.Qf6 (36...Rf7 37.Qf7#) 1–0. Davis,J – Salyer,A, Asheboro Chess Club, 1998.

4.a4 Be6 5.d4 Nd7 6.e4 ed4 7.Bd4 Ngf6 8.Bd3 g6 9.Ne2 Ne5 10.f4 Nd3 11.cd3 Rg8 12.bc6 bc6 13.0–0 Bg7 14.e5 de5 15.Be5= Ng4 16.Bg7 Rg7 17.Qc2 Rc8 18.Qc3 Qh4 19.h3+/– Qf6? 20.hg4+– (20.hg4 Qc3 21.Nbc3 Bg4 22.Rfe1+–) 1–0. Wartig,Wolfgang – Schwarz, corr DDR–ch I817, 1989.

4.a4 f5 5.d4 Nd7 6.de5 de5 7.e3 Bd6?? 8.Qd6+– Qe7 9.Qd3 g6 10.Ba3 Qf6 11.e4 Nh6 12.Nc3 Ng4 13.h3 Qh4?? 14.Qg3 Qg3 15.fg3 Ne3 16.Kd2 f4 17.gf4 ef4 18.Nf3 a6 19.ba6 ba6 20.Nd1 Nd1 21.Kd1 h5 22.Ne5 Ne5+/– 23.Bb2 0–0? 24.Be5 Re8 25.Bf4 Re4 26.Bc1 Bf5 27.Bd3 Rd8 28.Bd2 Red4 29.Ra3 Bd3 30.cd3 Rd3 31.Rd3 Rd3 32.Ke2 Ra3 33.a5 Ra2? 34.Rc1 Ra5 (34...c5+–) 1–0. Andy HB – aligarjon, ChessWorld.net, 2005.

4.a4 Bf5 5.e3 Qc7 6.c4 Nd7 7.Nc3 Ngf6 8.d3 d5 9.cd5 cd5 10.Rc1 Bb4 11.Qb3 Qa5 12.Ke2?? Bd3! 13.Kf3?! e4 14.Kg3 Nh5 15.Kh3 Bc3 16.Bc3= Qb6 17.Bd3 Qe6 18.g4 Ndf6?? 19.Bf6 Nf6+/– 20.Be2 h5 21.Kg2 Ng4 22.Bg4 Qg4 23.Kf1 Qf5 24.Rd1 Rd8 25.h4 Rh6 26.Qb2 Rg6 27.f4 ef3= 28.Qf2? Qe4?? 29.Rh3?? Qc4–+ 30.Ke1 Qc3 31.Kf1 Qc4?? 32.Ne2?? fe2 33.Qe2 Rg1! 34.Kg1 Qe2 35.Rf1 Qg4 36.Kh2 Qa4 37.Rf4 Qb5 38.Rhf3 Rd7 39.Rf5 g6 40.Re5 Re7 41.Rg5 Qe2 42.Kg3 Re3 43.Re5 Re5 44.Rf7 Kf7 (44...Kf7 45.Kf4 Qe3#) 0–1. Mulitze,E – Soentges,Simone, Porz op, 1990.

4.c4 Ne7 5.e3 g6 6.Nf3 Bg4 7.Be2 Bg7 8.Nc3 0–0 9.0–0 Nd7 10.Ne1 Bf5 11.Bg4 Nf6 12.Bf5 Nf5 13.a4 a6 14.Nc2 d5 15.cd5 Nd5 16.Nd5 cd5 17.Re1 ab5 18.ab5 Qb6 19.Qe2 Qc5 20.Ra8 Ra8 21.d3? Qb5 22.Ra1? Ra1–+ 23.Ba1? Qb1 24.Qe1 Qc2 25.d4 ed4 26.ed4 Nd4 27.g3 Nf3 (28.Kf1 Qc4 29.Qe2 Nh2 30.Ke1 Qb4 31.Kd1 Qb1 32.Kd2 Nf1 33.Qf1 Qf1 34.Bg7 Qf2 35.Kd3 Kg7–+) 0–1. valpa – stratum, playchess.de, 2004.

4.c4 Bg4 5.h3 Be6=+ 6.e3 Nf6 7.Nf3 Be7 8.Be2 0–0 9.Qc2 cb5=+ 10.cb5 Nbd7 11.Ng5 Rc8 12.Nc3 Bc4 13.Bc4 Rc4 14.Qb3 Rc8 15.Nge4 Ne4 16.Ne4 Nc5 17.Nc5= Rc5 18.0–0 Qa5=+ 19.a4 Qd2 20.Rfd1 Qa5 21.Ba3= Rc3 22.Qd5 Qa4?? 23.Bd6+– Ra3 24.Ra3 Qh4 25.Be7 Qe7 26.Ra7 1–0. Rader,Ted – Miller,Donald, Labor Day op, 1980.

4.bc6 bc6 5.e4 Nf6 6.Bd3 (6.Nc3 Nbd7=) 6...Bb7 (6...Na6 7.Ba6 Ba6 8.d3=+) 7.Nc3= d5 8.ed5 cd5 (< 8...Nd5 9.Qe2+=) 9.Nge2? (9.Qe2 d4 10.Ne4 Nc6=+) 9...Nc6 (Better is 9...d4!? 10.Nb1 Bg2–+) 10.0–0=+ Be7 11.Bb5 0–0 12.Ba4 d4–/+ 13.Nb1 Ng4 14.Ng3 Bh4?? 15.Nf5?? Qg5=+ 16.Nd6 Na5 17.Nb7= Nb7 18.Bc6 Rab8 19.Ba3 Rfd8 20.Bf3 Nh2 21.Kh2+/– e4 22.Be4 Qe5 23.g3 Bg3 24.fg3 Qe4 25.d3 Qg6 26.Rf4 Nd6 27.Bd6 Rd6 28.Nd2 1–0. pinecrest1981 – SamuraiDan, Live Game Caissa's Web, 2004.

4.e3 Bf5 5.d4 Nd7 6.Nd2 e4 7.Ne2 d5 8.c4 dc4 9.Ng3+= Qa5 10.Qc2 Bb4 11.Nf5+– c3 12.Bc3 Bc3 13.Rd1 Kf8 14.Nd6 Bd2 15.Rd2 Qb4 16.Ne4 cb5 17.Bd3 Ngf6 18.0–0+– a6 19.Rb1 Qe7 20.a4 b4 21.a5 Rd8 22.Nf6 Nf6 23.Qc4 Nd5 24.e4 Nc3 25.Rb4 Nb5 26.d5+– h5 27.Re2 Rh6 28.e5 Qd7 29.Qc5 Kg8 30.Rc4 Re8 31.d6 Qd8 32.h3 Rhe6 33.Bf5 (33.Bf5 Nd6 34.Be6 Re6 35.Rd4+– (35.ed6 Re2 36.Qc8 Re1 37.Kh2 Re8+–)) 1–0. Taulien,Hans_Juergen (2225) – Thoma,Theo (1820), remoteschach.de, 2004.

4.e4 cb5 5.Bb5 Bd7 6.Be2 Nc6 7.Ba3 (7.Nc3!?=) 7...Nf6 8.d3 Be7 9.h3 0–0 10.Bb2 (10.Nf3 d5 11.ed5 Nd5–/+) 10...Nd4 (10...Qb6!? 11.Ba3 d5 12.Be7 Ne7–/+) 11.Nf3 Nf3 12.Bf3 Ba4 (12...Qb6 13.Bc1–/+) 13.0–0 d5 14.Nc3 Bc6 15.ed5 Bd5 16.Bd5 Nd5= 17.Nd5 Qd5 18.c4 Qe6 19.Qf3 f5 20.Rae1 Bf6 21.c5 e4 22.Qe2 Qa2–/+ 23.Bf6 Qe2 24.Re2 ed3 25.Re7 Rf6 26.Rd7 Rc6 27.Rd1 Rc5 28.R1d3 b6 29.Rb7 Rc1 30.Kh2 Rb1 31.Rdd7= g5?? 32.Rh7?? g4 33.h4 a5?? 34.h5 Rb8 35.Rbg7 Kf8 36.h6 a4 37.Rh8# 1–0. pinecrest1981 – TheLoser1, Live Game Caissa's Web, 2004.

4.e4 Bd7 5.Nc3 cb5 6.Bb5 Bb5 7.Nb5 Nf6 8.Nc3 Qb6 9.Rb1 Qa6 10.a4 (10.Qe2 Be7+=) 10...Be7 11.Nb5 Qc6 12.d3 0–0 (12...a6 13.Nc3=) 13.Ne2 a6 14.Nbc3 d5 15.ed5 Nd5 16.Ne4 (Better is 16.0–0!?=) 16...f5–/+ 17.Nd2 e4 18.d4? e3 19.Nb3 ef2 20.Kf2 Bh4 21.g3 Bg5 22.Rf1?? Ne3 23.Qd3 Nf1 24.Rf1 Nd7 25.d5 Qg6 26.h4 Bf6 27.Ba3 Ne5 28.Qd1 Rf7 29.Kg2 Bh4 30.d6 Ng4 31.Qd4 Bf6 32.Qd3 Ne5 33.Qd2 Nc4 34.Qc1 Bg5 35.Nf4 Nd6 36.Ng6 =. pinecrest1981 – cip83, Live Game Caissa's Web, 2004.

4.e4 Nf6 5.Nc3 Be7 6.h3 0–0 7.Nf3 h6 8.Be2 cb5=+ 9.Bb5 a6 10.Bc4 b5 11.Bb3 Bb7 12.d3 Nc6 13.Ne2 Rc8 14.0–0= a5 15.a4 b4 16.Ng3 Qb6 17.Nf5 Rc7 18.Bc1 Rfc8 19.Be3+= Qa6 20.Bc4 Qa8 21.Bb6 Rd7 22.Bb5 d5?? 23.Bc6?? Rc6? 24.Ne5+– Rb6 25.Nd7 Nd7 26.Ne7 Kh8 27.ed5 Bd5 28.Nd5 Qd5 29.Re1 Rg6 30.g3 Qd4 31.Qf3 Ne5 32.Qe3 Qe3 33.Re3 Nc6 34.Rae1 Nd4 35.Re8 Kh7 36.R1e2 Ne2 37.Re2 Rg5 38.h4 Rc5+= 39.f4 h5 40.Kf2 g6 41.d4 Rc3 42.d5 Rc5 43.Rd2 Kg7 44.d6 Rc8 45.d7 Rd8 46.Rd5 Kf8 47.Ke2 Ke7 48.Ra5 Rd7 49.Rb5 Rc7 50.Kd2 Rc3 51.Re5 Kd6 52.Re3 Rc7 53.Rb3 Kc5 54.c3 Rd7 55.Kc2 bc3 56.Kc3 Ra7 57.Rb5+– Kc6 58.Kb4 Rd7 59.Rc5 Kb6 60.a5 Ka6 61.Rc6 Kb7 62.Rc3 Ka6+/– 63.Rc6 Kb7 64.Kb5 Rd5+/– 65.Rc5 Rd3 66.a6 Ka7 67.Rc7+– Kb8 68.a7 Ka8 69.Rf7 Rg3 70.Kc5 Rh3 71.Kb6 Rb3 72.Kc5 Rh3 73.Rg7 Rc3 74.Kd4 Rh3+– 75.Rg6 Rh4 76.Ke5 Ka7 77.f5 Rh1 78.Rh6 h4+/– 79.Kf6 h3+= 80.Kf7 h2 81.Kf8 Rf1 ˝–˝. mic (2210) – rr (2355), net–chess.com, 2008.

4.a4 Qa5

5.Bc3 Qc7 6.e3 Be6 7.g3 Nf6 8.Bg2 Be7 9.Ne2 0–0 10.0–0 Nbd7 11.d4 Rac8 12.Na3 cb5 13.Nb5 Qb8 14.Bb4 a6 15.Nbc3 Bc4 16.de5 Ne8 (Better is 16...Ne5!? 17.Qd2 Qc7=) 17.ed6 Bd6 18.Bd6 Nd6 19.Rb1 b6 20.Nd4?? (Better is 20.Qd2 Rfd8 21.Rfd1+=) 20...Bf1–+ 21.Qf1? (Better is 21.Nc6 Rc6 22.Bc6–+) 21...Ne8 22.Nd5+/– Nef6 23.Ne7 Kh8 24.Nc8 Qc8 25.Rb6?? Nb6–+ 26.Nc6 Na4 27.c4 Nc3 28.Qd3–/+ Na4 29.Ne7?? Qd8 30.Qd8 Rd8 31.Nc6 Rd1 32.Bf1 Nc5 33.Kg2 Nfd7 34.Nb8 f5 35.h4 1–0. MasterofDisaster – kusuri8asegamisw, Live Game Caissa's Web, 2004.

5.c4 a6 6.e3= cb5 7.ab5 Qb6 8.Nf3 Nd7 9.Be2 Ra7 10.0–0 ab5 11.Ra6?? Ra6 12.cb5 Ra5 13.Bc3 Ra7 14.d4 f6 15.de5 fe5 16.Qc2 Nc5 17.Bb4 Nf6 18.Bc4 Be6 19.Be6 Ne6 20.Nbd2 Be7 21.Nc4 Qb5 22.Bd6 Qd7 23.Be5 0–0 24.Rd1 Qb5 25.Nd6 Bd6 26.Rd6 Qc5 27.Qb3 Ra3 28.Qe6=+ Kh8 29.h3 Ne4?? 30.Bd4 Qc1 31.Kh2–/+ Nf2?? 32.Qg8 Rg8–+ 33.Bg7 (33.Bg7 Kg7 34.Ng5 Qe3 35.Rd7 Kf6 36.Nh7 Ke6 37.Nf8 Rf8 38.Rg7 Qe5 39.g3 Ng4 40.Rg4 Rf2 41.Kg1 Qe1#). OutOfBounce – ERIC1, Live Game Caissa's Web, 2005.

4.a4 cb5

5.ab5 Nf6 6.e3 Bd7 7.Nf3 Qb6 8.c4 Ne4 9.Be2 a6 10.0–0 Be7 11.d3 Ng5 12.Nbd2 0–0 13.Ng5 Bg5 14.Bf3 Be3? 15.fe3+– Qe3 16.Kh1 Bf5 17.Bb7 Ra7 18.ba6 Bd3 19.Re1 (19.Re1 Qb6 20.Qf3 Na6 21.Ba6+– (21.Qd3?! Nc5 22.Qe3 Rb7+–)) 1–0. hsingletary (1750) – deliriummorpheus (1625), net–chess.com, 2001.

5.ab5 Nf6 6.e3 Be6 7.Nf3 Be7 8.Be2 0–0 9.d3 b6 (9...a6 10.Ng5=) 10.c4 (10.0–0 Qc7+=) 10...Nbd7 (10...a5 11.0–0+=) 11.e4 Nc5 12.0–0 Qc8 13.Ng5 h6 (13...Nfd7 14.Ne6 fe6 15.Nc3+=) 14.Ne6+/– Qe6 15.Nc3 Qc8 16.Bf3 Rb8 17.Nd5 Nd5+/– 18.ed5 Bf6 19.Bg4 Qd8 20.Ra7 Re8 21.Qf3 Re7 22.Re7 Qe7 23.Re1 Ra8 24.d4 Na4 25.Bc1 Qa7 26.de5 de5 27.h3 Qa5 28.Re2 Qc3 29.Bh6?? Qf3=+ 30.Bf3 gh6 31.d6 Rd8–/+ 32.d7? Nc5 33.Bc6 Nd7 34.f4 Kf8 35.fe5 Ne5 36.Bd5 Nd7 37.Re4 Nc5 38.Rf4 Be5 39.Rf7 Ke8 40.Rh7 Ne6?? 41.Be6+– Rd1 42.Kf2 Rd2 43.Ke3 Rg2 44.Rh6 Rg3 45.Ke4 Bg7 46.Rh7 1–0. TIROLOCO – baretti, Live Game Caissa's Web, 2004.

4.a4 Nf6

(--> 1.b4 e5 2.Bb2 d6 3.b5 Nf6 4.a4 c6).

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 c6 5.a4).

4.c4 cb5

5.cb5 b6 6.a4 Bb7 7.Nf3 Nd7 8.e3 Ngf6 9.Be2 Be7 10.0–0 Ne4 11.d3 Nec5 12.Nc3 Nf6 13.e4 Rc8 14.Nd2 0–0 15.Nc4 d5 16.Nd5 Nd5 17.Ne5? Nf6 18.Nc6 Bc6–+ 19.bc6 Rc6 20.d4 Nce4 21.Bf3 Ng5 22.Bc6+– Qc7 23.d5 Bd6 24.g3 Nfe4 25.Qe2 a6?? 26.Rac1 Qe7? 27.Rfe1 Qf6 28.Rf1 Qh6?? 29.h4 Bg3 30.fg3 Ng3 31.Qg2 Nf1?? 32.Rf1 Qh4 33.d6 Rd8 34.d7 Qb4?? 35.Bg7! Qc5 36.Kh1 Kg7 37.Rg1?? h6 38.Bf3? Qb4 39.Bh5? Qa4 (39...Qa4 40.Bg4 Rd7 41.Bd7 Qd7–+) 0–1. stoker – Pulsar, Live Game Caissa's Web, 2005.

5.cb5= Nf6 6.a4 Nd5 7.e4= Nf6 8.f3 Qe7 9.Ne2 d5 10.Nec3 de4 11.Qc2 Be6 12.Ne4=+ Ne4 13.Qe4= f6 14.Bc4?? Bc4?? 15.Qc4= Nd7 16.0–0 Nb6 17.Qe2 Qb4 18.d4 e4?? 19.Qe4 Be7?? 20.Ba3 f5 21.Qe5 Nd7 22.Bb4 Ne5 23.Be7 Nf3 24.Rf3 Ke7 25.Rf5 Rac8 26.Na3 Rc3 27.Re1 Kd7 28.Rd5 Kc7 29.Rc5 Rc5 30.dc5 Rd8 31.Re7 Rd7 32.Rd7 Kd7 33.Nc4 g5 34.Kf2 h5 35.Ke3 Ke6 36.Na5 Kd5 37.Nb7 a5 38.ba6 Kc6 39.Ke4 g4 40.g3 Kc7 41.Kd5 Kd7 42.a7 Kc7 43.a8Q Kd7 44.Qd8# 1–0. Anderson,George – Nair,Krishnan, Winnipeg TNT March op, 2003.

4.c4 Be6

5.e3 cb5 6.cb5 Nd7 7.Nc3 (7.Nf3 h6 8.Nc3 Ngf6 9.Rc1 d5 10.Be2 Bd6 11.0–0 0–0 12.Na4; 7.Be2 Ngf6 8.Nc3 Be7 9.Nf3 h6 10.0–0 0–0 11.d4 e4 12.Nd2; 7.Qc2 Ngf6 8.Nc3 h6 9.Nf3 d5 10.Be2 Bd6 11.Rc1 0–0 12.0–0) 7...Ngf6 (7...h6 8.Rc1 Ngf6 9.Nf3 d5 10.Be2 Rc8 11.Qa4 Nc5 12.Qh4) 8.Nf3 d5 (8...h6 9.d4 e4 10.Nd2 d5 11.Be2 Bd6 12.Rc1) 9.Be2 (9.Ng5 Bd6 10.Ne6 fe6 11.Be2 0–0 12.0–0) 9...Bd6 (9...h6 10.Rc1 Bd6 11.0–0 0–0 12.Na4) 10.0–0 (10.Ng5 Bf5 11.0–0 0–0 12.d3) 10...0–0 11.Ng5 (11.Rc1 Rc8 12.Qa4) 11...Bf5 12.d3 h6 13.Nf3 Rc8 14.a4 Qc7 15.Rc1 Qb8 16.g3 Rc7 17.d4 e4 18.Nd2 Rfc8 19.Qb3 Be6 20.a5 a6 (20...b6 21.a6=) 21.Ba3 Ba3 22.Qa3 ab5 23.Nb5 Rc1 24.Rc1 Rc1 25.Qc1 Ne8 26.Nb3 b6 (26...Qd8!?+=) 27.a6+/– Qa8 28.Qa3 (28.Nc7!? Nc7 29.Qc7+/–) 28...Nb8 29.Nd6 (29.a7 Nd7+=) 29...Nd6 30.Qd6 Na6 31.Qb6 Nb8 (31...Qb8 32.Qb8 Nb8 33.Nc5+=) 32.Qd8 Kh7 33.Bf1 Qa7 34.Na5 (better is 34.Nc5!?+/–) 34...Bd7 35.Qe7 (35.Qe7 Qa5 36.Qf7–+). Chumarova,Karina – Porokhniuk,Denis, Novomikhailovsky RUS, Open, 2011.

5.e4 Nf6 6.Nc3 Be7 7.Nf3 0–0 8.Be2 Nfd7 9.d4 Nb6 10.d5 cd5 11.Nd5 N8d7 12.a4 Bg4 13.Nb6= Nb6 14.Nd2 Be2=+ 15.Qe2 Bg5 16.Nf3 f5 17.Ng5 Qg5= 18.0–0 f4 19.f3 Rf6 20.a5+= Nd7 21.Ba3 b6 22.Qd2 Rd8 23.ab6 ab6 24.Bb4 Rg6 25.Rf2 Rh6 26.g3 Rg6 27.g4 h5 28.h3 Qh4 29.Rh2 Qg3 30.Qg2 h4 31.Be1 Qg2 32.Rg2 Rh6 33.g5 Rh7 34.Rg4 Rc8 35.Bb4 Nc5? 36.Bc5 dc5 37.Kf2 g6 38.Rd1 Ra8 39.Rd6 Ra2 (39...Ra2 40.Kg1 Kf8+/–). Luettig,Hendrik – Retzlaff,Wolfgang (1710), Pinneberg–ch, 2004.

4.c4 Nf6

5.e3 Be7 6.Nf3 Bg4 7.Be2= 0–0 8.0–0 Qb6 9.a4 Nbd7 10.d4 e4 11.a5 Qc7 12.Nfd2 Be6 13.Nc3 d5 14.Qb3 Rfe8 15.Rfc1 Qd6 16.c5 Qb8 17.b6 a6 18.Na2 Bg4 19.Qd1 Be2 20.Qe2 Nf8 21.Nb4 Ng6 22.g3 Qc8=+ 23.Kg2 h6 24.h3 Nh7 25.Rh1 Ng5 26.h4 Nh7 27.f4 ef3 28.Qf3= Nf6 29.h5 Nf8=+ 30.Raf1 Qg4 31.Nd3 N8h7 32.Ne5 Qf3 33.Ndf3 Ne4 34.Nh4 Bf6 35.Nhf3 Re7 36.Ng4 Rae8 37.Bc1 Nhg5 38.Nf6 Nf6 39.Ne5 Nfe4 40.Re1 Nc5 41.Nc6=+ Re6 42.dc5 Rc6–/+ 43.Ba3 Ne4 44.Rc1 Ng3!–+ 45.Rh3 Ne4 46.Rhh1 Nf6 47.Kf3 Re5 48.Bb2 Rf5 49.Kg2? Nh5 50.Bd4 Nf6 51.Rc2 Ne4 52.Kg1 Rg5 53.Rg2 Rg2 54.Kg2 Kh7 55.Rh5 g5 56.Rh1 Kg6 57.Kf3 Nd2 58.Ke2 Nb3 59.Rf1 f5 60.Rd1 Nd4 61.ed4 g4 62.Kf2 h5 63.Re1 Kf7 64.Re5 Kg6?? 65.Re7+= Kg5 66.Rb7 Kf4 67.Rg7 h4 68.b7 g3 69.Kg2 h3 70.Kh3 Rh6+/– 71.Kg2 Rh2 72.Kg1?? Rb2+= 73.c6 Kf3 74.Rg3 Kg3 75.Kf1 Kf3 76.Ke1 Ke3 77.Kd1 f4 78.c7 Rb7 79.c8Q Rb1 80.Kc2 Ra1 81.Qc3 Ke2 82.Qa1 f3 83.Qd1 Kf2 84.Qd3 Ke1 85.Qa6 f2 86.Qf6 (86.Qf6 f1Q 87.Qf1 Kf1 88.Kd3+–; 86.Qe6 Kf1 87.Qg4 Ke1 88.Qd1#) 1–0. Bittner – Schladt, 1987.

5.Nf3 Bd7 6.e3 Be7 7.Be2= 0–0 8.0–0 Qe8 9.a4 b6 10.Nc3+= Bf5 11.d3 e4 12.Nd2 ed3= 13.Bf3 Qd7 14.e4 Be6 15.Qb1 d5?? 16.Qd3?? de4 17.Qd7+= Nfd7 18.Nce4 h6 19.Ba3 c5?? 20.Ng3 Bf6 21.Rad1 Ne5 22.Ba8 Nbd7 23.Bd5 Bd5 24.cd5 c4 25.Bf8 c3 26.Nde4 (26.Nde4 Kf8 27.Nf6 Nf6 28.Rd4+–; 26.Bg7 Bg7 27.Nde4 Nc4+–) 1–0. stoker – Thepawnfisher, Live Game Caissa's Web, 2005.

5.Nf3 Bf5 6.e3 cb5 7.cb5 Nbd7 8.Be2 Be7 9.d3 0–0 10.0–0 Rc8 11.Nbd2 Nc5 12.Nh4 (12.d4 ed4 13.Bd4 a5+=) 12...Be6 (Better is 12...Bd3!? 13.Bd3 Nd3–/+) 13.d4 ed4 14.Bd4 Nce4 15.Ne4 (15.Ba7? Nc3 16.Qe1 b6–+) 15...Ne4 16.Nf3 Qa5 17.a4 Nc3 18.Qe1 Bc4?? 19.Bc3+– Qb6 20.Bc4 Rc4 21.Bd4 Qc7 22.a5 b6 23.ab6 ab6 24.Qb1 Rc8 25.Qb3 d5 26.Qb2 Rb4 27.Qe2 Qd6 28.Be5 Qe6 29.Bd4 Rbc4?? 30.Ra6 Rc2 31.Qd3 Qg4 32.Rb6 Bh4 33.Nh4 Qh4 34.Qf5 R2c7 0–1. stoker – bach4, Live Game Caissa's Web, 2004.

5.Nf3 Bf5 6.e3 Nbd7 7.Be2 g6 8.0–0 Bg7 9.d3 0–0 10.e4 Be6 11.Ng5 Nc5 12.Ne6 fe6 13.a4 a6 14.Nc3 ab5 15.ab5 Ra1 16.Ba1 Qb6 17.f4?? Nce4 18.Kh1 Nf2 19.Rf2 Qf2 20.Ne4? Ne4 21.de4 Rf4 22.h3 Qg3 23.Bf3 Bh6 24.Qd6 Rf7 25.Qe6?? Bf4 26.Kg1 Be3 27.Kh1 Qe1 28.Kh2 Bg1 29.Kh1 Bf2 30.Kh2 Qg1# (30...Bg3#) 0–1. bloodymama – VLOwillup, Live Game Caissa's Web, 2005.

4.bc6 Nc6

5.Ba3 Nf6 6.c3 Be7 7.Nf3 0–0 8.h3 Re8 9.e3 d5 10.Bb5 Ba3 11.Na3 Bd7 12.0–0 a6 13.Bc6 Bc6 14.d4 e4 15.Ne5 Rc8 16.c4 Qa5 (16...dc4 17.Nac4 Bd5–/+) 17.Nc6? (Better is 17.Qb3!?=) 17...Rc6 (17...Qa3 18.Ne5 dc4 19.Qc2–+) 18.Nc2 (Better is 18.cd5!? Nd5 19.Nb1–/+) 18...Rc4–+ 19.a3 Rec8 20.Nb4 Qc7 21.Na2 Rc2 22.f3?? (22.Rc1 h6–+ (22...Ra2?! 23.Rc7 Rc7 24.Qb3=)) 22...a5 23.fe4 Ne4 24.Rf5?? Qg3 25.Qf1 Qe3 26.Kh2 Ng3 27.Qf3 Nf5 28.Qf5 Qd4 29.Rf1 f6 30.Re1 Qd2 31.Qe6= Kf8 32.Rg1?? Qf4 33.Kh1 Qe5 34.Qb6 Qc7 35.Qb3 g6 36.Qd5 Qc6 37.Qa5 Ra2 38.Qb4 Qc5 39.Qb7?? h5 40.Qh7 Rc2 41.Rf1 Qg5 42.Qh8= Kf7 43.Qh7 Ke6 44.Re1+/– Kd6?? 45.Qe7+– Kc6 46.Re6 Kb5 47.Qd7 Ka5?? 48.Qa7 Kb5 49.Qb7 Ka5 50.Ra6 1–0. pinecrest1981 – gera, Live Game Caissa's Web, 2004.

5.c3 Qb6 6.Ba3 Nf6 7.h3 Be7 8.e3 0–0 9.Qb3 Qc7 10.Nf3 h6 11.Bb2 Be6 12.Qc2 Qb6 13.Qc1 e4 14.Nd4 Nd4 15.cd4 Rac8 16.Nc3 Nd5 17.Rb1 Qd8 18.Ba3 Nc3 19.dc3 Qa5 20.Bb2 Qa2 21.Be2 Qd5 22.0–0 Qg5 23.g4 f5 24.Kh2 fg4 25.Bg4 Bg4 26.hg4 Qg4 27.Rg1 Rf2 (27...Rf2 28.Rg2 Qg2#) 0–1. pinecrest1981 – pitfall, Live Game Caissa's Web, 2006.

5.c3 Nf6 6.d3 Be7 7.e4 Bg4 8.Be2 Qd7 9.Ba3 Be2 10.Ne2 0–0 (10...d5 11.Be7 Ne7 12.Nd2=+) 11.Ng3 (11.c4 Qg4 12.0–0 Rac8=) 11...Rad8 (11...d5 12.0–0=+) 12.Nf5 d5=+ 13.Ne7 Ne7 14.ed5 Qd5?? 15.0–0?? Rfe8–/+ 16.Be7 Re7 17.a4 e4 18.d4–/+ Rc7 19.Na3 Rc3–+ 20.Nb5 Rd3 21.Qc2 a6 22.Na3 Ng4 23.Rac1?? Qd4 24.h3 Ne5 25.Qc7 Ra3 26.Qc8 Rd3 27.Qb7 e3 28.fe3 Qe3 29.Kh1 Qd4 30.Rce1 Qd5 31.Re5 Qb7 0–1. pinecrest1981 – ross60, Live Game Caissa's Web, 2004.

5.Nc3 d5 6.e4 d4 7.Nd5 =+.

5.Nc3 Bf5 6.d3 (6.e4!? Bg6 7.Bc4=) 6...Nf6 7.e4 Bg6 8.Be2 Be7 9.Nd5 (9.h4 h6=+) 9...Nd4 (Better is 9...Nd5 10.ed5 Qa5 11.c3 Qd5–/+) 10.Ne7+= Qe7 11.Bd4 ed4 12.Nf3 (12.f4 h6=) 12...0–0 13.Nd4 (13.Qd2 d5 14.e5 Nd7=) 13...Qe5 (Better is 13...d5!? 14.0–0 de4 15.de4 Ne4=+ (< 15...Qe4 16.Bf3 Qe7 17.Rb1=)) 14.c3= Rac8 (14...d5 15.f3=) 15.0–0 (Better is 15.Qd2!?+/–) 15...Rc3= 16.Nf3 Qe6 17.Qa4 Rfc8 18.Qa7 R3c7 19.Nd4 Qd7 20.Qa3 b6 21.h3 (21.Qb4 Qe7+/–) 21...Ra7 22.Qb2 Rac7 23.Qb6 Rc5 (23...Rb7 24.Qa5+/–) 24.Nb3 (24...Rc2 25.Rfe1+–) 1–0. pinecrest1981 – ross60, Live Game Caissa's Web, 2004.

4.e3 Nf6

5.a4 Be7 6.c4 0–0 7.Nc3 Bf5 8.Be2 Qc7 9.d3 Nbd7 10.Nf3 d5 11.Nh4 Be6 12.0–0 d4 13.ed4 ed4 14.Nb1 c5 15.Nf3 Rae8 16.Nbd2 Bd6 17.g3 Bh3 18.Re1 Ne5 19.Bf1 Bg4–/+ 20.Bg2 Nd3–+ 21.Re8 Re8 22.Ba3 Re1!! 23.Ne1 Bd1 24.Nd3 Ba4 25.Bc5 Bc5 26.Ra4 b6 27.h3 h5 28.Nb3 g6 29.Ra1 Kg7 30.Re1 Qd6 31.Re5 Nd7 32.Rd5 Qe6 33.Kf1 f6 34.Nf4 Qe7 35.Nd2? Ne5–+ 36.Bh1 Bb4 37.Rd4 Bd2 38.Rd2 Nc4 39.Re2 Qb4 40.Ne6 Kh6 41.Bc6 Qd6 42.Nf4 Ne5 43.Kg2 g5 (43...g5 44.Re5 fe5–+ (44...gf4?! 45.Rd5 Qe6 46.gf4–+); 43...Nc6?! 44.Re6 Qd8 45.Rc6–+) 0–1. mic (2100) – rr (2395), net–chess.com, 2008.

5.c4 a6 6.a4 Nbd7 7.Nc3 Qa5 8.Nf3= Nc5 9.d4 Nce4 10.Qb3 Be6 11.Be2 Be7 12.0–0 0–0 13.Qc2 Nc3 14.Bc3 Qb6 15.a5 Qd8 16.de5 de5 17.bc6 bc6 18.Ne5 Qc7 19.Bf3 Rab8? 20.Nc6+– Rbc8 21.Rab1 Rfe8 22.h3 Bd7 23.Rb7 Qd6 24.Bb4 Qe6 25.Ne7 Re7 26.Rb6 Qe5 27.Be7 Qe7 28.Bb7 Rc7 29.Ba6 Ra7 30.Qb2 Qc5 31.Rb8 Be8 32.Bb5 Kf8 33.Rd1 Qe7 34.a6 g6 35.Re8! Ne8 36.Qh8# 1–0. Taulien,Hans_Juergen – Hangmann,Christian, remoteschach.de, 2002.

5.c4 Be6 6.Bc3 Be7 7.d3 Qb6 8.bc6 Nc6 9.Nd2 0–0 10.Ngf3 Rac8 11.Be2 Qc7 12.0–0 d5 13.cd5 Nd5 14.Bb2 Bc5 15.Ne4 Be3=+ 16.Nc5?? Bc5–+ 17.Rc1 b6 18.Qa4 Bd7 19.Qb3 Nf4 20.Rfe1 Be6 21.Qa4 Rfd8 22.Qe4 f5 23.Qa4 Ne2 24.Re2 Rd3 25.Ne5 Ne5 26.Re5 Rd2 27.Re6 Bf2 28.Kf1 Qc1 29.Bc1 Rc1 (29...Rc1 30.Qd1 Rcd1 31.Re1 Re1#) 0–1. mic (2185) – mbarker (2195), net–chess.com, 2009.

5.c4 Be6 6.Nc3 Be7 7.d3 0–0 8.bc6 Nc6–/+ 9.Be2 Qd7 10.Nf3=+ a6 11.0–0 d5 12.cd5 Nd5 13.Rc1 Rac8 14.Na4 Qd8 15.Ne5+= Ne5 16.Be5 b5 17.Nb2 Bf6 18.Bf6 Qf6 19.d4 Nc3= 20.Qd2 Ne2 21.Qe2 Ba2 22.Nd3 Bc4 23.Qd2 Qf5=+ 24.Rfd1?? Bd3–+ 25.Rc8 Rc8 26.h3 Rc2 27.Qd3 Qf2 (27...Qf2 28.Kh2 Qg2#) 0–1. mic (2185) – mbarker (2195), net–chess.com, 2009.

5.c4 Be6 6.Nf3 a6 7.Nc3 Be7 8.d4 ed4 9.Nd4 d5 10.ba6 Na6 11.Qb3 Nc5= 12.Qc2 Nfe4 13.Bd3?? Nd3–/+ 14.Qd3 Nc3 15.Ne6 Qa5?? 16.Bc3+– (16.Bc3 Bb4 17.Nc7 Kd7 18.Nb5 cb5 19.Qd5 Kc7 20.Qe5 (20.Qf7?! Kb6 21.Qe6 Ka7 22.Bb4 Qb4 23.Kf1 Qc3+=) 20...Kc8 21.Bb4 Qb4 22.Kf1 Qc4 23.Kg1+/–; 16.Qc3?? Bb4 17.Ng7 Kf8–+) 1–0. Tiedemann,Joern (1810) – Roentgen,Dave (1625), remoteschach.de, 2006.

3.b5 Bd7

4.a4 a6 5.e3 ab5 6.ab5 Ra1 7.Ba1 Nf6 8.c4 c5 9.g3 Be6 10.Qa4 b6 11.d3 Be7 12.Bg2 0–0 13.Ne2 Qc7 14.e4 Nbd7=+ 15.0–0 Qb7 16.Nbc3 Qa8 17.Qa8= Ra8 18.Bb2 Ra7 19.Ra1 Ra1= 20.Ba1 Ne8 21.f4 h5? 22.Bh3?? g6?? 23.Kf2?? Kf8?? 24.Bb2?? Bd8?? 25.Ke3?? Nef6?? 26.Nd5?? (26.f5 d5 27.cd5 (27.fe6?! d4 28.Kf3 dc3 29.Nc3 fe6+–) 27...Bf5 28.ef5+–) ˝–˝. Niekisch,Dirk – Scholze,Marcus, DVMi U15 Fredeburg, 1995.

4.a4 Be6 5.d4 ed4 6.Nf3 =.

4.a4 f5 5.c4 a6 6.e3 ab5 7.cb5 Nf6 8.Bc4 c6 9.d4= d5 10.Be2 e4 11.Bh5? g6 12.Be2=+ Be7 13.Nd2 0–0 14.Nh3 Qb6 15.0–0 cb5 16.ab5 Ra1–/+ 17.Qa1 Bb5 18.Bb5 Qb5 19.Rb1 Qd3 20.Nf1 Nc6 21.Nf4 Qc4 22.Rc1 Qb5 23.Ne6 Rb8 24.Ba3 Ba3 25.Qa3 Qb4 26.Qa2 Ne7 27.Rc7?? Kf7?? 28.Nf4 Rd8 29.h3 g5 30.Ne2 Kg6 31.Nfg3 Qb6?? 32.Re7+– Rd7 33.Rd7 Nd7 34.Qd5 Qb1 35.Kh2 Kh6 36.Nf5 Kg6 37.Qd7 h6 38.Qe6 Kh7 39.Qh6 Kg8 40.Qg7# 1–0. mic (2120) – cruciverbalist (2045), net–chess.com, 2008.

4.a4 Qf6 5.e3 h6 6.c4 Be7 7.Be2 Be6 8.Nf3 Nd7 9.0–0 Nc5 10.d4+/– ed4 11.Bd4 Qg6 12.Nbd2 0–0–0 13.g3 Bf6 14.Bf6 Nf6 15.Nd4 Bh3 16.Re1 Nfe4 17.Bf1 Bf1 18.Rf1 f5 19.a5 Qf6 20.a6+/– b6 21.Nc6 Rde8 22.Na7 Kb8 23.Nc6 Ka8 24.a7 g5 25.Nf3 h5 26.Qd5?? Nc3=+ 27.Qd2 N5e4?? 28.Qd3 h4 29.Nh4?? gh4–+ 30.Ra3 hg3 31.fg3 Qh6 32.h4 Reg8 33.Rf3 Ng3 (34.Rg3 Qh4 35.e4 Rg3 36.Kf2 Rd3 37.Kf1 Rf3 38.Kg2 Qf2#; 33...Qh4! 34.Qe4 Qh1 35.Kf2 Rh2#) 0–1. FrutiniMalini – BANZAI, Caissa's Web, 2004.

4.c4 b6 5.e3= Be7 (5...Nf6 6.d4 e4 7.Nc3=) 6.Nf3 (6.d4 ed4 7.Bd4 Nf6=) 6...a6 (6...Nf6 7.d4 e4 8.Nfd2=) 7.a4 (7.d4 e4 8.Nfd2 Nf6=) 7...ab5 (7...Nf6 8.d4 ed4 9.Nd4=) 8.ab5 Ra1 9.Ba1 Bg4 (9...Nf6 10.Be2=) 10.Be2 Nf6 11.d4 0–0 (11...e4!? 12.Nfd2 Be2 13.Qe2 d5+=) 12.de5+/– Bf3 (12...Nfd7 13.ed6 Bd6 14.h3+/–) 13.Bf3 (13.ef6 Bf6 14.Bf6 Be2 15.Bd8 Bd1 16.Bc7 Bg4 17.Bb6 Rc8+–) 13...Nfd7+/– 14.ed6 Bd6 15.g3 (15.Bd4 Ne5+/–) 15...Nc5 (15...Be5 16.Nc3+/–) 16.0–0 Nbd7 17.Bd5 (17.Qd5 Qe7+–) 17...Kh8 (17...Qe7 18.Qh5+/–) 18.Nd2+– f6 (18...Be5 19.Bd4+–) 19.Nf3 (19.Qh5 Qe7+–) 19...Qe7 (19...Ne5 20.Nd4+–) 20.Nd4 Nb8 (20...Qe8 21.Qf3+–) 21.Nf5 Qd8 (21...Qd7 22.Qf3+–) 22.Nd6 (22.Qf3 Be5+–) 22...Qd6 23.Qf3 (23.Qb1 Rd8+–) 23...Nbd7 24.Rd1 Qe7 (24...Rd8 25.Qf5+–) 25.Bb2 (25.Bd4 Rd8+–) 25...Ne5 26.Qe2 (26.Qf5 g6 27.Qc2 Kg7+–) 26...Na4 (26...c6 27.bc6 Qc7 28.Be5 fe5 29.Qg4+–) 27.Bd4 Nc5 28.Qc2 Ne6 (28...Re8 29.Qf5+–) 29.Be5 (29.Qf5!? Nd4 30.ed4 Ng6+–) 29...fe5 30.Ra1 Ng5 (30...Nc5 31.f3+/–) 31.Ra8 g6? (better is 31...Ra8 32.Ba8 e4+–) 32.Rf8 Qf8 33.Qb2 Threatening mate: Qxe5 33...Nf7 (33...Qf6 34.f4 Ne6+–) 34.Bf7 Qf7 35.Qe5 Kg8 36.Qe4 (better is 36.Qd5!? Kf8 37.Qf7 Kf7+–) 36...Kf8 (36...Kg7 37.Qd4 Kf8 38.Qf4 Qf4 39.gf4+– (worse is 39.ef4 Ke7+–)) 37.h4 (37.h4 Kg7 38.Qd4 Kf8 39.Qf4 Qf4 40.gf4+– (worse is 40.ef4 Ke7+–)) 1–0. Schwichtenberg,Juergen (1635) – Poppitz,Joachim, 31. Alpenpokal Oberstdorf op, 2005

4.c4 g6 5.e3 (5.d4 e4=) 5...Bg7 6.Nf3 (6.d4 ed4 7.Bd4 Nf6=) 6...c5 (6...Nf6 7.d4=) 7.Be2 Ne7 8.0–0 0–0 9.d3 (9.d4 ed4 10.ed4 Re8=) 9...Nf5 (9...a6 10.Nc3=) 10.Nc3+= Qa5 (10...a6 11.a4+=) 11.Qb3 Be6 (11...a6 12.b6 Bc6 13.Nd5 Bd5 14.cd5+=) 12.a4 Nd7 13.Nd5 (13.Ne4 Qc7+=) 13...Bd5 (13...Rfe8 14.Bc3 Qd8 15.Rfe1+=) 14.cd5 a6 (14...Rac8 15.Bc3 Qd8 16.a5+=) 15.Bc3 Qc7 16.Rfc1 (16.Rfb1 ab5 17.Qb5 Ra7+=) 16...Rfe8 17.e4 Nd4 18.Nd4 ed4 19.Bd2 ab5 (19...f5 20.f3+=) 20.Qb5 b6 (20...f5 21.f3+=) 21.Bd1 (21.a5 ba5 22.Ba5+=) 21...Rec8 (21...f5 22.f3+=) 22.Bb3 (22.Bg4!? Ra7 23.Rab1+/–) 22...Ne5+= 23.h3 (23.Bc4 Qe7+=) 23...Rab8 (better is 23...Bh6! 24.Bh6 Ra5+=) 24.f4+= Bh6 (24...Nd7 25.Rf1+/–) 25.Ra2 (25.Rc2 Nd7+/–) 25...Nd7 26.Bc4 Qd8 27.g3 (27.Rb2 Rc7+/–) 27...Nf6 (27...Ra8 28.g4+=) 28.Kg2 Nh5 (28...Ne8 29.Rb2+/–) 29.Rf1 White prepares f5 (29.Re1 Nf6+/–) 29...Qf6 (29...Bg7 30.Re1+/–) 30.Qd7 White prepares the advance f5 (30.Qa6 Rc7+–) 30...Kh8 (30...Rd8 31.Qa7+/–) 31.Qg4 (31.Rb2!? Rd8 32.Qc6 Kg7+–) 31...Qe7+/– 32.f5 (32.Rb2 Nf6 33.Qh4 Bf8+–) 32...Nf6 (32...Bd2 33.Rd2 Ra8 34.Rb2+/–) 33.Qf3 (33.Qh4 Bd2 34.Rd2 Rf8+/–) 33...Bd2+= 34.Rd2 Rg8 (34...g5 35.Rb2+=) 35.Re2 (35.fg6 Rg6 36.Rb2 Rbg8=) 35...Nd7 (35...g5 36.Qf2+=) 36.f6 Qf8 (36...Qd8 37.Bb5+=) 37.Bb5 Ne5 38.Qf2 (38.Qf4 Ra8+=) 38...g5 39.g4 (39.Qf5 Ra8+=) 39...h5 (39...Ng6 40.Qg3=) 40.Qg3+= Qh6 41.Ref2 (41.Rb2 Rg6+=) 41...Rg6 42.Rf5 Kh7 (42...Ra8 43.gh5 Qh5 44.Kf2=) 43.Re5+= de5 44.Qe5 Rf8 45.d6 (better is 45.Qd6+=) 45...Kg8?? (45...Rgg8 46.Qf5 Qg6 47.e5+/–) 46.d7 (better is 46.Be8 Kh7+–) 46...Rd8?? (better is 46...hg4 47.hg4 Qh4+=) 47.Qe8! Qf8 (47...Re8 48.de8Q) 48.Qf8 Kf8 49.Rf5 Kg8 50.gh5 c4 51.dc4 d3 52.hg6 fg6 53.Rd5 Kf7 54.Rd3 Kf6 55.Rd6 (55.Rd6 Ke7 56.Rb6 Rd7 57.Bd7+–) 1–0. Bittner,Hannjoerg – Bode, corr, 1987.

4.d4 ed4 5.Qd4 Nf6 6.e4 Be7 7.Nf3 0–0 8.Qd3 Re8 9.Be2 Ne4 10.Qe4 Bf6 11.Qb4 Bb2 12.Qb2+– Bg4 13.Qb3 Qe7 14.Nc3 Bf3 15.gf3 Nd7 16.0–0–0 Nc5 17.Qc4 a5 18.Ne4 Ne4 19.fe4 Qe4 20.Qe4 Re4 21.Bf3 Rb4 22.Bb7 Rb8 23.Bc6 a4 24.a3 Rc4 25.f3 Rc6 26.bc6 Rb6 27.Rd4 Rc6 28.Re1 Kf8 +–. pinecrest1981 – LonelyHousewife, Live Game Caissa's Web, 2004.

4.e3 a5 5.d4 (5.Nc3 Nf6+=) 5...e4 (5...Nf6 6.de5 de5 7.Be5+=) 6.Nc3 (6.c4 Nf6+=) 6...Nf6+= 7.d5 c6 (7...Bf5 8.Nge2+=) 8.a4+/– cd5 (8...Be7 9.Nge2+/–) 9.Nd5 Be7 (9...Be6 10.Bf6 gf6 11.b6 Bd5 12.Qd5+–) 10.Qd4 0–0 (10...Be6 11.Ne7 Nbd7 12.Nc6 bc6 13.Qd6+–) 11.Ne2 Be6 12.Nb6 Nbd7 13.Na8 Qa8 14.Qd2 (14.Nf4 Rc8+/–) 14...Rc8 (14...d5 15.Nd4+/–) 15.Nd4 (15.Nf4 Ne5+/–) 15...d5 16.Ba3 Nc5 17.Be2 Bd7 (17...Bd6 18.0–0+/–) 18.0–0 Bf8 (18...b6 19.c4+/–) 19.Bb2+– b6 (19...Bd6 20.Nb3 b6 21.Nc5 Bc5 22.c4+–) 20.h3 (20.Rfd1 Be7+–) 20...Rc7 (20...Bd6 21.Nb3+/–) 21.Nb3+– Nb3 (21...Qb7 22.Be5+–) 22.cb3 Bb4 23.Qd1 Qd8 (23...Be6 24.Rc1 Bc5 25.Be5+–) 24.Bf6 Qf6 25.Qd5 Qg6? (25...Qe6 26.Qa8 Qe8 27.Qe8 Be8+–) 26.Rfc1 Bc5 (26...Bh3 27.Bf1 Rc1 28.Qd8 Bf8 29.Rc1 Bg4+–) 27.Bg4! Qd6 (27...Bg4 28.Qd8 Double attack) 28.Qd6 Bd6 29.Rc7 Bc7 30.Bd7 h5 (30...Kf8 31.Bc6+–) 31.Rc1 Bd6 32.Rc8 Bf8 33.Rb8 h4 34.Rb6 g6 35.Rb8 f5 36.b6 Kg7 37.Rf8! Kf8 38.b7 Ke7 39.Bb5 Kf6 40.b8Q Kg5 41.Qh8 f4 42.ef4 Kf4 43.Qf6 1–0. Taulien,Hans_Juergen (2350) – Fritz,Marco (1910), remoteschach.de, 2002.

4.e3 a6 A) 5.d4 A1) 5...ab5 6.de5 de5 7.Be5 Nc6 8.Nf3 Nf6 9.Bb2=; A2) 5...e4 6.Nc3 (6.d5 Nf6 7.Nc3 ab5 8.Bb5 c6 9.Bc4+=) 6...Nf6 7.d5 ab5 8.Bb5 c6 9.Bc4+=; A3) 5...ed4 6.ba6 de3 7.ab7 Qh4 8.g3 Qb4 9.Bc3–/+; B) 5.Nc3 B1) 5...Nf6 6.Nf3 (6.f4 ab5 7.Bb5 Bb5 8.Nb5 c6 9.Nc3+=; 6.a4 ab5 7.ab5 Ra1 8.Qa1 Bf5 9.d3+=; 6.ba6 Na6 7.d4 e4 8.d5 Nc5 9.Bc4+=; 6.Qf3 c6 7.bc6 Nc6 8.Be2 Rc8 9.Rc1+=) 6...Be7 7.a4 0–0 8.Be2 e4 9.Nd4=; B2) 5...Be7 6.Qf3 (6.Nf3 Nf6 7.a4 0–0 8.Be2 e4 9.Nd4=; 6.a4 Nf6 7.Nf3 e4 8.Nd4 c5 9.bc6=) 6...c6 7.bc6 Bc6 8.Qg3 Nf6 9.f4=; B3) 5...Nh6 6.a4 (6.ba6 Na6 7.Nf3 c6 8.Be2 b5 9.0–0=; 6.Nf3 ab5 7.Bb5 Be7 8.a4 c6 9.Be2=; 6.Qf3 Ra7 7.d4 c6 8.bc6 Bg4 9.Qg3=; 6.d4 ab5 7.Bb5 Bb5 8.Nb5 c6 9.Nc3=) 6...Be6 7.Nf3 ab5 8.ab5 Ra1 9.Qa1=; B4) 5...ab5 6.Bb5 (6.Nb5 Be7 7.Nf3 Nf6 8.Nc3 0–0 9.Be2+=) 6...c6 7.Be2 Nf6 8.Nf3 Be7 9.a4=; C) 5.a4 C1) 5...ab5 6.ab5 (6.Bb5 c6 7.Be2 Nf6 8.Nf3 Be7 9.Nc3=) 6...Ra1 7.Ba1 Nf6 8.d4 e4 9.d5=; C2) 5...Be7 6.Nf3 (6.Qf3 c6 7.d4 ed4 8.Bd4 Bf6 9.bc6+=; 6.Be2 Nf6 7.Nf3 c5 8.0–0 0–0 9.Nc3=; 6.Nc3 Nf6 7.Be2 0–0 8.Nf3 e4 9.Nd4=; 6.Bc4 Nf6 7.Nf3 e4 8.Nd4 d5 9.Be2+=) 6...Nf6 7.Be2 c5 8.0–0 0–0 9.Nc3=; C3) 5...Bf5 6.d4 (6.Qf3 Qc8 7.e4 Bg4 8.Qe3 Nf6 9.Nf3=; 6.Nc3 Nf6 7.Qf3 Qc8 8.e4 Bg4 9.Qe3=; 6.Ne2 ab5 7.ab5 Ra1 8.Ba1 Nf6 9.d4=; 6.Nf3 Be7 7.Be2 Nf6 8.0–0 0–0 9.d3=) 6...ab5 7.Qf3 Qc8 8.Bb5 c6 9.Bd3=; C4) 5...Nf6 6.Nf3 (6.Be2 e4 7.Nc3 d5 8.f3 Bd6 9.fe4+=) 6...ab5 7.ab5 Ra1 8.Ba1 Be7 9.Be2=.

4.e3 b6 5.c4 Nf6 6.Be2 c5 7.Na3 h5 8.Bf3+= e4?? 9.Bf6+– Qf6 10.Be4 Bc6 11.bc6 Na6 12.Nc2 0–0–0 13.Nh3 Qe5 14.Nf4 Qe4+/– 15.0–0 Nb4?? 16.Nb4+– a5 17.d3 Qe5 18.Nbd5 g5 19.Nb6 Kc7 20.Nfd5 Kc6 21.Qa4+– Kb7 22.Qa5 Bg7+– 23.Na4 Rb8 24.Qb6 Kc8 25.Qc7# 1–0. AbstractPoetic – moody_ezat, internet, 2007.

4.e4 Be7 5.Nf3 Nf6 6.d3 Bb5–/+ 7.c4 Bd7 8.Qb3 Bc6 9.Ng5 0–0 10.Nc3 Nbd7 11.Ba3 Nc5 12.Bc5 dc5 13.Be2 Nd7 14.Nh3 Bf6 15.0–0–/+ Re8 16.Nd5 Bd5 17.cd5 b6 18.Bf3 Nb8 19.g3 c6–+ 20.dc6 Nc6 21.a4 Nd4 22.Qd1 Qd7 23.Bg2 Qc7 24.Kh1 Rac8 25.Ng1 c4 26.dc4 Qc4 27.Qg4 Qe6 28.Qd1 Rc5 29.Bh3 Qd6 30.Ne2 Ne2?? 31.Qd6+– (31.Qd6 Rd8 32.Bd7+–) 1–0. pinecrest1981 – elbala, Live Game Caissa's Web, 2006.

4.a4 c6

5.c4 Nf6 6.e3 Be7 7.d4 ed4 8.Bd4 cb5 (8...Be6!?=) 9.ab5 0–0 10.Nc3 (10.Ra7? Ra7 11.Ba7 Qa5 12.Qd2 Qa7–+) 10...Be8 (10...Be6 11.Qf3 d5 A) 12.Ra7 Ra7 13.Ba7 Qa5–+ (13...dc4?! 14.Bd4–/+); B) 12.Nge2+=) 11.Qf3 Nbd7 (11...d5!?+/–) 12.Qb7+– Nc5 13.Bc5 dc5 14.Be2 (14.Ra7 Ra7 15.Qa7 Bd6+–) 14...h6 (14...a5 15.ba6 Bd6 16.Bf3+–) 15.Bf3 Bd7 (15...Rc8 16.Qa7 (worse is 16.Ra7 Qd3 17.Nge2 Bd7+–) 16...Rc7 17.Qa5+–) 16.Qa8 Qa8 17.Ba8 Ra8 18.Nf3 Ng4 (18...Bd8 19.Ne5+–) 19.Nd5 Bd8 20.e4 Bf6 (20...Nf6 21.Ne5+–) 21.Ra3 Bb2 (21...Bd8 22.b6 a5 23.Ke2+–) 22.Ra2 Bd4 (22...Ne5 23.Ne5 (23.Rb2?! Nd3 24.Kd2 Nb2+–) 23...Be5 24.Nb6 ab6 25.Ra8 Kh7 26.Kd2+–) 23.Nd4 cd4 24.Nb6! Rd8 (24...ab6 Exploits the pin 25.Ra8) 25.Ra7 Nf6 (25...Be8 26.Rc7+–) 26.f3 Be6 (26...Kf8 27.e5 Bb5 28.cb5+–) 27.Kd2 (better is 27.c5+–) 27...Rc8 (27...Kf8+–) 28.Nc8 Bc8 29.Ra8 (29.Ra8 Nd7 30.Rc8 Kh7 31.c5+–) 1–0. marekt – chessteacher 43, ChessWorld.net, 2004.

5.e3 a6 6.ba6 Ra6?? 7.Ba6+/– Na6 8.d4 Qa5 9.Bc3 Qb6 10.de5+– de5 11.Be5 Bb4 12.c3 Ba5? 13.Bg7 Qb2 14.Nd2 Bc3 15.Bh8 Bh8 16.Rb1 Qg7 17.Rb7 Qg2 18.Qf3 Qf3 19.Ngf3 Ne7 20.Ne5 Bc8? 21.Ra7 Be5+/– 22.Nc4 Bb8 23.Ra8 Bb7?? 24.Nd6+– Kd7 25.Nb7 Nc8 26.Nc5 Kd6 27.Na6 1–0. MasterofDisaster – OUST, Live Game Caissa's Web, 2004.

4.a4 Nf6

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 c6 5.a4).

5.h3 Be7 6.d3 0–0 7.c4 Bf5 8.Nf3 Nbd7 9.e4 Bg6 10.Be2 c6 11.0–0 cb5 12.ab5+= h6 13.Nbd2 Bh7 14.Ba3 Rc8 15.Nb3 b6 16.Bb4+/– Re8 17.Ra7+– Nc5 18.Nc5 dc5 19.Bc3 Rc7 20.Ra6 Bd6 21.Rb6 Rd7 22.Ra6 Rb7 23.Qa4 Kf8 24.Ra1 Rb8 25.Ba5 Qd7 26.Qb3 Bc7 27.b6 Bd8 28.Bc3 Bb6 29.Rb6 Rb6 30.Qb6 Nh5 31.Ne5 Qe6 32.Bh5 Qb6 33.Nd7 Kg8 34.Nb6 g6 35.Bg4 Rd8 36.Nd5 Kf8 37.Bf6 Rb8 38.Be7 Ke8 39.Bc5 (39.Bc5 f5 40.ef5 gf5 41.Bh5 Kd8 42.Ra7 Rb1 43.Kh2 Kc8 44.Rc7 Kb8 45.Ba7 Ka8 46.Nb4 Rb4 47.Bf3 Rb7 48.Rb7 f4 49.Rh7#) 1–0. mic (2100) – bar (1945), net–chess.com, 2008.

4.c4 a6

5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.e3 Qa5 9.Nc3 f5 10.Nf3+= Nf6 11.Be2 Be7 12.d4 e4 13.Nd2 0–0 14.0–0 d5 15.cd5 Nd5 16.Nd5 cd5=+ 17.Qb3? Be6?? 18.Bb2?? Qd2–+ 19.Bd1 f4 20.Bc3 Qd3 21.Bc2 Qc4 22.ef4?? Qb3 23.Bb3 Rf4 24.Bd2 Rh4 25.g3 Rh5 26.Bd1 Rf5 27.Bg4 Rf6 28.Bg5 Rg6 29.Be6 Re6 30.Bf4 Nd7 31.Bc7 Nb6 32.Rc1 Nc4 33.Ra1 Kf7 34.b6 Kg6 35.h4 Nb6 36.h5 Kh5 37.Kg2 Kg6 38.Rh1 Kg5 39.f4 Kg6 (39...Kg6 40.Rb1 Na8–+) 0–1. metal – polovw, caissa.com, 2007.

5.a4 ab5 6.cb5 Nf6=+ 7.g3 Be7 8.Bg2 c6 9.Nc3 cb5 10.ab5= Ra1 11.Ba1 b6 12.Nf3 Qc7 13.0–0 0–0 14.Qb1 d5 15.Ng5 g6 16.h4 d4 17.Nd5 Nd5–/+ 18.Nf7? Kf7 19.Bd5 Kg7 20.Rc1 Qd6 21.Be4 Qf6 22.f3 Bc5 23.Kg2 Be8 24.Qa2? Bb5 25.d3 Nc6 26.Qb2 Ba6 27.Bd5 Ne7 28.Be4 Nf5 29.Bf5 Qf5 30.Qa2 Bc8 31.Rh1 Be6 32.Qa7 Rf7 33.Qa4 Bd5 34.Bb2 Bf3! 35.ef3 Qf3 36.Kh2 Qf2 37.Kh3 Qb2 38.Rh2 Qb1 (38...Qb1 39.Qc2 Qf1 40.Rg2 Rf3–+) 0–1. mic (2145) – macedon (2115), net–chess.com, 2008.

5.a4 c6 6.e3 ab5=+ 7.ab5 Ra1 8.Ba1 cb5 9.cb5 Nf6 10.Nf3 h6 11.Be2 Be7 12.0–0 0–0 13.d4 e4 14.Nfd2 d5 15.Nc3 Bd6 16.f3 ef3 17.Bf3 Be6 18.e4 de4 19.Nce4 Be7 20.Nc5+= Bd5 21.Bd5 Qd5 22.Qb3 b6 23.Nce4 Nbd7 24.Nf6 Nf6 25.Qd5 Nd5 26.Nc4 Rc8 27.Ne5 f6 28.Nc6 Bd6 29.Re1 Kf7 30.Rc1 Re8 31.g3 Re2 32.Bc3 Nc7 33.Na7=+ Ra2 34.Nc8 Ba3 35.Bb2 Nb5–/+ 36.Ba3 Ra3 37.d5 Rd3 38.Nb6 Nc3 39.Kf1 Nd5 40.Nd5 Rd5 41.Rc6 Rd2 42.Kg1 g5 43.g4–/+ Re2 44.h3 Re7 45.Kg2 Kg6 46.Rc5 h5–/+ 47.Kg3 Re3 48.Kg2 h4 49.Rf5 Re5 50.Rf2 f5 51.gf5 Kf6 52.Rf3 Re2 53.Kf1=+ Re4 54.Kg2 Rf4 55.Rb3 Rf5 56.Rb6 Kg7 57.Rc6 Rf6 58.Rf6 Kf6–+ 59.Kf3 Kf5 60.Ke3 g4 61.hg4= Kg4 62.Kf2 Kh3 63.Kg1 Kg3 64.Kh1 ˝–˝. Fischer,G – Pinto Loyola,O, Dortmund–ch, 1994.

5.a4 Nf6 6.d4 =+.

5.Nc3 +=.

4.c4 Nf6

5.a4 Be7 6.Nf3 e4 7.Nd4 0–0 8.e3 Re8 9.Be2 c6 10.Nc3 c5 11.Nc2 a6 12.0–0 ab5 13.ab5 Ra1 14.Qa1 Be6 15.Nd5 Bd5 16.cd5 Nd5 17.Bg7 Nd7 18.Bh6 Bf6 19.d4?? cd4 20.Nd4= Ne5 21.Qa2 Nb6 22.Nf5 Ng6 23.Rd1 Re5? 24.Nd6 Qe7? 25.Nc4?? Rf5?? 26.Nb6+– Bg5 27.Bg5 Qg5 28.Nd5 Nh4 29.g3 Kg7 30.Qb2 Kh6 31.Nf4 Nf3 32.Bf3 ef3 33.Qc2 Qg4 34.e4 Qh3 35.Nh3 Kg6 36.ef5 1–0. stoker – goldenbear, Live Game Caissa's Web, 2004.

5.Nc3 c6 6.e3 (6.Nf3 Be7=) 6...Be7 7.Nf3 (7.Bd3 cb5 8.cb5 d5=) 7...cb5 8.cb5 0–0 9.Bd3 (9.Bc4=) 9...Qc7 (9...h6!?=) 10.0–0+= d5 11.e4 (11.Rc1 Qd6 12.Nb1 e4=) 11...d4 12.Nd5 Nd5 13.ed5 Qd6 (13...Bg4!? 14.h3 Bh5+/–) 14.Qe2+/– Qd5 (14...Bf6 15.a4 Re8 16.Ba3+/–) 15.Ne5+– Be6 (15...Bf6 16.f4 a6 17.Ba3 Bb5 18.Bf8 Kf8 19.Rab1 Bd3 20.Qd3+– (worse is 20.Nd3 Nd7+/–)) 16.Be4 Qd8? (16...d3 17.Bd3 a6+–) 17.Bb7 Nd7 (17...Bd5 18.Ba8 Ba8 19.Qc4+–) 18.Nc6 Qc7 (18...Qe8 19.Ba8 Bf6+–) 19.Ne7 Kh8 20.Ba8 Ra8 (20...Nb6 21.Nc6 Ra8 22.Bd4+–) 21.Bd4 (21.Rfc1 Qb7 22.Bd4 Nf6+–) 21...Rb8 (21...Nb6 22.Nc6 Re8 23.Rfe1+–) 22.Rfc1 Qd6 23.Ba7 (23.Nc6 Re8+–) 23...Ra8 (23...Re8 24.Nc6+–) 24.Nc6 Nf6 (24...Bd5 25.f3 Nf6 26.Qe7+–) 25.b6 Bd5 26.b7 Rg8 27.b8Q Bc6 28.Qd6 1–0. pierre – puck, internet, 2010.

5.Nc3 Be7 6.g3 =.

5.Nf3 Be7 6.e3 0–0 7.Be2 c6 8.a4 cb5 9.cb5 a6 10.0–0 ab5 11.ab5 Ra1 12.Ba1 Qa5 13.Nc3 Be6 14.d4 ed4 15.Nd4 Nbd7 16.Ne6 fe6 17.Bc4 d5 18.Be2 Nc5 19.Bb2 Nce4 20.Ne4+/– Ne4 21.Qc2 Qb6 22.Bd4 Qd6 23.Ra1 Bf6 24.Bf6 Nf6 25.Ra7 b6 26.Qc7 Qc7=+ 27.Rc7 Ra8 28.g3 Rb8 29.Kg2 Ne4= 30.Bg4 e5 31.Be6+– Kf8 32.Bd5 Nd2 33.Rf7 Ke8 34.Rg7 Nb1 35.Rg8 1–0. stoker – Schnick, Live Game Caissa's Web, 2004.

4.e3 c6

5.a4 Nf6 6.Nc3 a6 7.Nf3 Be7 8.ba6 ba6 9.Be2= 0–0 10.h3 c5 11.0–0 Qb6 12.Qc1 e4 13.Nh2 d5=+ 14.a5 Qc7 15.Qd1 Bd6 16.Ng4=+ Ng4 17.Bg4 Bg4 18.Qg4= Nc6?? 19.Nd5+– Ne5 20.Nf6 Kh8= 21.Ne4?? Ng4–+ 22.hg4 Be7 23.f4 Qb7 (23...Qb7 24.Bg7 Kg7–+) 0–1. mic (2100) – rsuzukovich (1925), net–chess.com, 2008.

5.Nc3 A) 5...Qa5 6.bc6 (6.a4 Nf6 7.Nf3 Be7 8.Be2 0–0 9.0–0=; 6.Qf3 Nf6 7.Ne4 Be7 8.a4 Ne4 9.Qe4+=; 6.Qe2 Nf6 7.f4 Be7 8.fe5 de5 9.Nf3+=) 6...Nc6 7.e4 Nf6 8.Rb1 Be7 9.Nf3=; B) 5...Be7 6.Bd3 (6.Be2 cb5 7.Bb5 Bb5 8.Nb5 Nf6 9.Nf3+=; 6.Bc4 Nf6 7.Nf3 0–0 8.bc6 Nc6 9.0–0+=; 6.Nf3 Nf6 7.Be2 cb5 8.Nb5 a6 9.Nc3+=; 6.a4 Nf6 7.Nf3 e4 8.Nd4 0–0 9.Be2=) 6...a6 7.bc6 Bc6 8.Nge2 Nf6 9.0–0=; C) 5...a6 6.bc6 (6.a4 Nf6 7.Nf3 e4 8.Nd4 d5 9.Be2=; 6.ba6 Na6 7.Nf3 Nf6 8.Be2 Be7 9.0–0+=) 6...Nc6 7.Nf3 Nf6 8.Bc4 e4 9.Ng5=; D) 5...Nf6 6.Nf3 (6.bc6 Nc6 7.e4 Be7 8.Nf3 0–0 9.Be2+=; 6.Rb1 d5 7.Nf3 Bd6 8.bc6 Nc6 9.Nb5+=; 6.Be2 cb5 7.Bb5 d5 8.Nf3 Bd6 9.0–0+=; 6.d4 Qa5 7.Qd2 ed4 8.ed4 d5 9.Nf3+=) 6...Be7 7.Be2 cb5 8.Nb5 a6 9.Nc3+=.

5.c4 a6 6.bc6 (6.d4 ab5 7.cb5 e4 8.bc6 bc6 9.Ne2=; 6.Nc3 ab5 7.cb5 Nf6 8.d4 Qa5 9.Nf3+=; 6.a4 Nf6 7.d4 e4 8.d5 cd5 9.cd5=; 6.Nf3 ab5 7.cb5 Nf6 8.Nc3 e4 9.Nd4+=) 6...Nc6 7.d4 Nf6 8.Nf3 e4 9.Nfd2=.

5.c4 cb5 6.cb5 Qb6 7.a4 a6 8.Nc3 ab5 9.ab5 Ra1 10.Ba1 Be7 11.Nf3 Be6 12.Be2 Nf6 13.0–0 0–0 14.Na4 Qd8 15.Nc3 b6 16.Qc2 Nbd7 17.d3 Qb8 18.e4 Rc8 19.Qb2 Nc5 20.d4 ed4 21.Nd4 Ncd7? 22.Nc6+– Rc6 23.bc6 Nc5 24.Nd5 Bd5 25.ed5 Nce4 26.Bf3 Nc5 27.Rb1 Bd8 28.Qd4 Qc7 29.Bc3 Ne8 30.Bb4 Bf6 31.Qf4 Be5 32.Qf5 Qe7 33.Bc5 bc5 34.Rb8 g6 35.Qd7 Qh4 36.Re8 Kg7 37.g3 Qd4 38.Qd8 Qa1 39.Kg2 1–0. OPA – bigpopae100, Live Game Caissa's Web, 2004.

5.c4 cb5 6.cb5 Be7 7.d4 ed4 8.Bd4+= Bf6 9.Nf3 Qa5 10.Qd2 Qd2 11.Nbd2 Bd4 12.Nd4 Nf6 13.Rc1 0–0 14.a4 Nd5 15.Ne4+– a6 16.Nd6 ab5 17.ab5 b6 18.Bc4 Be6 19.Bd5 Bd5 20.N4f5 Be6 21.Ne7 Kh8 22.Ke2 Nd7 23.Rhd1 Nc5 24.Nd5 Bd5 25.Rd5 g6 26.Rcd1 Ra2 27.R5d2 Rfa8 28.Nf7 Kg7 29.Nd6 Kf6 30.f4 R8a5 31.Ra2 Ra2 32.Kf3 Ra3 33.Nc4 Rb3 34.Rd6 Kg7 35.Rb6 Na4 36.Rb7 Kh6 37.Ne5 Nc5 38.Ng4 Kh5 39.Rh7# 1–0. Trkn – guest2132, ICC, 2004.

5.c4 Qb6 6.a4 (6.d4 cb5 7.cb5 Bb5 8.Qb3 Bf1 9.Qb6+=; 6.bc6 Nc6 7.Qb3 Qc7 8.Nc3 Nf6 9.Nd5=; 6.Nc3 Nf6 7.Nf3 Be7 8.Be2 0–0 9.a4=; 6.Qb3 cb5 7.cb5 Be6 8.Bc4 Bc4 9.Qc4=) 6...d5 (6...Qa5 7.Nf3 Nf6 8.Be2 Be7 9.0–0=) 7.Be5 (7.cd5 cb5 8.Be5 ba4 9.Nc3+/–) 7...cb5 (7...dc4 8.Na3 cb5 9.ab5+/–) 8.Nc3 dc4 (8...Ne7 9.ab5+– 1.44) 9.Nd5 Qa5 10.ab5 Qd8 11.Nc7 Ke7 12.Bc4 Be6 13.Be6 fe6 14.Qg4 Nf6 1–0. marekt – boldeagle, ChessWorld.net, 2003.

5.c4 Be7 6.d4 (6.Be2 Nf6 7.Nc3 0–0 8.Nf3 e4 9.Nd4=; 6.Nf3 Nf6 7.Nc3 0–0 8.Be2 e4 9.Nd4=; 6.Nc3 Nf6 7.Nf3 0–0 8.Be2 e4 9.Nd4=; 6.f4 Bh4 7.g3 Bf6 8.fe5 de5 9.Nc3=) 6...e4 7.bc6 bc6 8.Nc3 Nf6 9.Nge2=.

5.c4 Nf6 6.Be2 (6.d4 e4 7.bc6 Nc6 8.Nd2 d5 9.a3+=; 6.Nc3 Be7 7.Nf3 0–0 8.d4 e4 9.Nd2=; 6.Nf3 Be7 7.Be2 e4 8.Nd4 0–0 9.d3=; 6.a3 Be7 7.d4 e4 8.Nc3 cb5 9.cb5+=) 6...Be7 7.Nf3 e4 8.Nd4 0–0 9.d3=.

5.d4 A) 5...ed4 6.Qd4 (6.Bd4 cb5 7.Nf3 b4 8.a3 ba3 9.Na3=; 6.bc6 Nc6 7.ed4 d5 8.Nf3 Nf6 9.Bd3+=; 6.ed4 cb5 7.Bd3 Nf6 8.Nf3 Be7 9.0–0+=) 6...Nf6 7.c4 a6 8.Nf3 ab5 9.cb5=; B) 5...e4 6.bc6 (6.Nd2 Nf6 7.bc6 bc6 8.c4 Be7 9.Ne2=; 6.c4 cb5 7.cb5 d5 8.Qb3 Nf6 9.Ne2=; 6.Nc3 d5 7.bc6 Bc6 8.Nge2 Nf6 9.Ng3+=; 6.d5 cb5 7.Nc3 Qa5 8.Qd2 Nf6 9.Ne4+=) 6...bc6 7.c4 Nf6 8.Nc3 Be7 9.Nge2=; C) 5...Nf6 6.de5 (6.Nd2 e4 7.bc6 bc6 8.c4 Be7 9.Ne2=; 6.c4 e4 7.bc6 Nc6 8.Nd2 d5 9.a3+=; 6.Be2 e4 7.c4 d5 8.Qb3 cb5 9.cb5+=) 6...de5 7.Be5 cb5 8.Nd2 a6 9.Bd3=; D) 5...cb5 6.de5 (6.Nd2 Qe7 7.Rb1 Bc6 8.e4 d5 9.Ngf3+=; 6.a3 e4 7.Nc3 Nf6 8.d5 Qb6 9.Qd2+=) 6...de5 7.Be5 Nc6 8.Nf3 Ne5 9.Ne5=.

5.Nf3 A) 5...Nf6 6.c4 (6.a4 e4 7.Nd4 d5 8.Be2 Bd6 9.0–0=; 6.Nc3 Be7 7.Be2 cb5 8.Nb5 a6 9.Nc3+=; 6.bc6 Nc6 7.Bc4 Rc8 8.Bb3 Be7 9.Nc3+=; 6.Na3 Be7 7.Be2 a6 8.bc6 Nc6 9.0–0+=) 6...Be7 7.Be2 e4 8.Nd4 0–0 9.0–0=; B) 5...cb5 6.d4 (6.Nc3 b4 7.Nd5 Ne7 8.Bc4 Nbc6 9.Bb3–/+; 6.a3 Nf6 7.Nc3 a6 8.e4 Nc6 9.Be2+=; 6.Be2 Nf6 7.a3 Be7 8.0–0 0–0 9.Nc3+=) 6...e4 7.Nfd2 Nf6 8.Nc3 d5 9.Nb5+=.

5.a4 a6

6.c4 cb5 7.cb5 ab5 8.ab5 Ra1 9.Ba1 Qb6 10.Nc3 d5 11.Nd5+/– Qc5 12.Nc3 Nf6 13.Nf3 e4 14.Nd4 Bd6 15.d3 ed3 16.Bd3 0–0 17.0–0 Be5 18.Nce2 Bd4 19.Nd4 Nd5 20.Qh5 Be6 21.Qh7# 1–0. pumpkin (2330) – autocage, net–chess.com, 2007.

6.c4 ab5

7.ab5 Ra1

8.Ba1 Nf6

9.Na3 Be7 (9...Qa5 A) 10.Bb2 Be7 (10...Bf5 11.Ne2 Nbd7 12.Ng3 Bg6 13.f4 Ne4 14.f5 Ng3) 11.Nf3 0–0 12.Be2 Bf5 13.bc6 Nc6 14.Nb5 Qa2; B) 10.Nc2 Bf5 (10...cb5 11.cb5 Bb5 12.Bc3 Qa4 13.Bb5 Qb5 14.Na3 Qa6) 11.Bc3 Qa4 12.Nb4 Qd1 13.Kd1 Ne4 14.Ke1 cb5; C) 10.bc6 bc6 (10...Nc6 11.Nb5 Nb4 12.Bc3 Ne4 13.f3 Nc3 14.dc3 Bb5) 11.Nc2 Na6 12.Bc3 Qa2 13.Nf3 Ne4 14.Nb4 Nb4; 9...Ne4 A) 10.Nf3 Qa5 (10...Bf5 11.Qa4 Nd7 12.bc6 Ndc5 13.c7 Na4 14.cd8Q Kd8 15.Nb5) 11.Bb2 Bf5 12.Nh4 Be6 13.Qc2 Qb4 14.bc6 bc6; B) 10.bc6 Nc6 (10...Bc6 11.Nf3 Nd7 12.Nb5 Be7 13.Be2 0–0 14.0–0 Qa5) 11.Nf3 Be7 12.Qb1 Nc5 13.Be2 0–0 14.Nb5 e4; C) 10.Bb2 Bf5 (10...Qa5 11.Ne2 Be7 12.Ng3 Nc5 13.Be2 0–0 14.0–0 Qb4) 11.Ne2 Nd7 12.Ng3 Ng3 13.hg3 Nc5 14.g4 Bg6; 9...Bf5 A) 10.Nf3 Nbd7 (10...Qa5 11.Qc1 Nbd7 12.Bc3 Qc7 13.d4 Ne4 14.c5 Nc3) 11.Be2 Qa5 12.Bb2 Nc5 13.0–0 Qb4 14.Qa1 Be7; B) 10.bc6 Nc6 (10...bc6 11.Qa4 Qb6 12.Nf3 Ne4 13.Be2 Nc5 14.Qd1 Qb4) 11.Qb3 Qd7 12.Nf3 Be7 13.Nb5 0–0 14.Be2 Ra8; C) 10.Ne2 Nbd7 (10...Bg6 11.c5 d5 12.Be5 Bc5 13.Qa4 Nbd7 14.Bb2 0–0) 11.Ng3 Bg6 12.bc6 bc6 13.Qa4 Qc8 14.d4 h5) 10.Be2 (10.c5 e4 (10...Bg4 11.f3 Bd7 12.cd6 Bd6 13.Nc4 Qe7 14.Qb3 0–0) 11.Bf6 gf6 12.cd6 Bd6 13.Nc4 Bb4 14.Qb1 Qe7; 10.Nf3 0–0 (10...Qa5 11.Qc1 0–0 12.Be2 Ne4 13.0–0 d5 14.Bb2 Bg4) 11.Qc2 Qa5 12.Qc3 Qa7 13.Bb2 Ne4 14.Qc2 f5; 10.Qa4 0–0 (10...Bf5 11.Nf3 0–0 12.c5 e4 13.Nd4 Bd7 14.cd6 Bd6) 11.Nf3 Ne4 12.Be2 Bf5 13.0–0 Nd7 14.bc6 Ndc5) 10...0–0 (10...Qa5 11.Qc1 d5 12.Bb2 e4 13.Nh3 0–0 14.Nf4 Rc8) 11.Nf3 (11.Qa4 Bf5 12.Qa7 Nbd7 13.Qb7 cb5 14.Qb5 Qa8) 11...Be6 (11...Qa5 12.Bb2+= (12.Qc1 Ne4 13.0–0 d5 14.Bb2 Bg4) 12...Bf5 13.c5 d5 14.Ne5 Bc5; 11...Bf5 12.bc6 Nc6 13.Nb5 Qb6 14.0–0 Ra8) 12.0–0 Nbd7 13.d4 (13.Ng5 Bf5 14.f4 ef4) 13...e4 (13...Qa5 14.Nc2 Rd8) 14.Nd2 (14.Ng5 Bf5=) 14...d5 (14...Qa5 15.Bb2 Nb6 16.Qc2+=) 15.c5 Ne8 (15...Qa5 16.Bb2=) 16.f3 (16.Qa4 Qc7+=) 16...f5 (16...Qa5 17.Qc1 Nef6 18.Bc3=) 17.Qb3 Nc7 (17...Nef6 18.f4+=) 18.bc6 (18.b6 Ne8 19.fe4 fe4 20.Ne4 Rf1 21.Kf1 Nb6+=) 18...bc6 ˝–˝. Schmeding,Heinrich – Sieker,Hans, Bahn–chT Fuessen, 1993.

9.Bb2 A) 9...Bf5 A1) 10.Nf3 cb5 (10...Be7 11.Nc3 0–0 12.h3 Nbd7 13.g4 Bg6 14.Nh4 Nc5) 11.cb5 Nbd7 12.Nc3 Be7 13.h3 Qa5 14.g4 Bg6; A2) 10.Be2 Be7 (10...cb5 11.cb5 Nbd7 12.Nf3 Be7 13.Nc3 0–0 14.Nh4 Be6) 11.Nf3 cb5 12.cb5 Nbd7 13.0–0 0–0 14.d4 Qc7; A3) 10.Nc3 Be7 (10...Qa5 11.Nf3 Be7 12.Nh4 Be6 13.Qc2 Qb4 14.Na2 Qa5) 11.Nf3 0–0 12.Be2 Nbd7 13.0–0 Qc7 14.Ng5 h6; B) 9...Be7 B1) 10.Nc3 Bf5 (10...0–0 11.Be2 Bf5 12.Nf3 Nbd7 13.0–0 Qc7 14.Nh4 Be6) 11.Qf3 g6 12.e4 Be6 13.Nh3 Bg4 14.Qe3 Nbd7; B2) 10.Qc2 0–0 (10...Qb6 11.Nf3 0–0 12.Bd3 cb5 13.cb5 Rc8 14.Nc3 h6) 11.Nc3 cb5 12.cb5 Qc8 13.Nh3 d5 14.Qb3 d4; B3) 10.Nf3 Bf5 (10...0–0 11.Nc3 Bf5 12.h3 Nbd7 13.g4 Bg6 14.Nh4 Nc5) 11.Nc3 0–0 12.Be2 Nbd7 13.Nh4 Be6 14.0–0 Qc7; C) 9...e4 C1) 10.Ne2 Be7 (10...cb5 11.cb5 Bb5 12.Nbc3 Bd3 13.Nf4 Bf1 14.Rf1 Nc6) 11.Bf6 Bf6 12.Nbc3 Bc3 13.Nc3 f5 14.Be2 0–0; C2) 10.Qc2 d5 (10...Be6 11.Nc3 d5 12.Nge2 Bb4 13.Qa4 Qa5 14.Qa5 Ba5) 11.Nc3 Bd6 12.bc6 bc6 13.cd5 cd5 14.Nd5 Nd5; C3) 10.Nc3 Be7 (10...Be6 11.Nh3 Nbd7 12.Nf4 Bf5 13.bc6 bc6 14.d3 Qb8) 11.Qc2 d5 12.f3 0–0 13.cd5 cb5 14.fe4 b4; D) 9...cb5 D1) 10.Nc3 b4 (10...bc4 11.Bc4 Qb6 12.Qb1 Qc6 13.Bf1 Be7 14.Nf3 0–0) 11.Nb5 Be7 12.Nf3 0–0 13.Be2 Nc6 14.0–0 Qb6; D2) 10.cb5 Be7 (10...Bf5 11.Nc3 Be7 12.Nf3 Nbd7 13.Bc4 0–0 14.Qe2 Qc7) 11.Nf3 Bf5 12.Nc3 Nbd7 13.Bc4 0–0 14.Qe2 Qc7.

9.Nc3 A) 9...Bf5 A1) 10.Nge2 Nbd7 (10...Be6 11.Qa4 Be7 12.Bb2 0–0 13.Ng3 Qc7 14.Be2 Nbd7) 11.Ng3 Be6 12.bc6 bc6 13.Be2 Be7 14.0–0 0–0; A2) 10.Qa4 Qc8 (10...Be7 11.Nge2 0–0 12.Ng3 Be6 13.Qa7 cb5 14.cb5 Qc7) 11.Nf3 Nbd7 12.d4 Be7 13.Be2 ed4 14.ed4 0–0; A3) 10.Bb2 Be7 (10...Qa5 11.Nf3 Be7 12.Nh4 Be6 13.Qc2 Qb4 14.Na2 Qa5) 11.Nge2 Nbd7 12.Ng3 Be6 13.Be2 0–0 14.0–0 Qc7; B) 9...cb5 B1) 10.cb5 Bf5 (10...Be7 11.Nf3 Bf5 12.Bc4 Nbd7 13.0–0 0–0 14.Qe2 Qc7) 11.Nf3 Nbd7 12.Bb2 Be7 13.h3 0–0 14.g4 Be6; B2) 10.Nf3 b4 (10...e4 11.Nd4 b4 12.Nd5 Nc6 13.Qb1 Be7 14.Nc6 bc6) 11.Nd5 Na6 12.d4 Nd5 13.cd5 e4 14.Nd2 f5; B3) 10.Nb5 Na6 (10...Nc6 11.Nf3 Be7 12.Qc2 g6 13.Be2 0–0 14.0–0 Qb6) 11.Nf3 Be7 12.Be2 0–0 13.0–0 Nc7 14.Nc3 Ne6; C) 9...Be6 C1) 10.Be2 Qa5 (10...Be7 11.Nf3 0–0 12.0–0 h6 13.Bb2 Nbd7 14.Qc2 Nb6) 11.Nf3 Qb4 12.Qa4 Qa4 13.Na4 cb5 14.cb5 Nbd7; C2) 10.Qa4 Be7 (10...Qc8 11.Nf3 Nbd7 12.d4 Be7 13.Be2 0–0 14.0–0 Nb6) 11.Nf3 0–0 12.d4 Qc7 13.Bd3 Nbd7 14.Ng5 ed4; C3) 10.Nf3 Be7 (10...Nbd7 11.Ng5 Bg4 12.Be2 Be2 13.Qe2 h6 14.Nf3 e4) 11.Ng5 Bf5 12.Qf3 Qd7 13.Nge4 Ne4 14.Ne4 cb5; D) 9...Be7= D1) 10.Bb2 0–0 (10...cb5 11.cb5 0–0 12.Nf3 Bf5 13.h3 Nbd7 14.g4 Be6) 11.Nf3 Bf5 12.Be2 Nbd7 13.0–0 Qc7 14.Nh4 Be6; D2) 10.Be2 0–0 (10...Bf5 11.Nf3 0–0 12.0–0 Nbd7 13.d4 Qc7 14.Nh4 Be6) 11.Qb1 h6 12.Nf3 cb5 13.Nb5 Nc6 14.0–0 Qb6; D3) 10.Nf3 cb5 (10...Bf5 11.Nh4 Be6 12.Qc2 0–0 13.Be2 Nbd7 14.Nf3 h6) 11.Nb5 Na6 12.Be2 0–0 13.0–0 Nc7 14.Nc3 Ne6.

9.Be2 A) 9...Be7 A1) 10.Nf3 Bf5 (10...0–0 11.0–0 cb5 12.cb5 h6 13.Na3 Be6 14.Nc4 Qc7) 11.0–0 Nbd7 12.d4 Qc7 13.Nc3 0–0 14.Nh4 Be6; A2) 10.Nh3 cb5 (10...0–0 11.Nc3 Bf5 12.0–0 Nbd7 13.Bb2 Qa5 14.f4 g6) 11.cb5 Bf5 12.Nc3 Nbd7 13.0–0 0–0 14.Bb2 Qc7; A3) 10.Nc3 0–0 (10...Bf5 11.Nf3 0–0 12.Nh4 Be6 13.Qc2 Nbd7 14.Nf3 h6) 11.Nf3 Bf5 12.Bb2 Nbd7 13.0–0 Qc7 14.Nh4 Be6; B) 9...Bf5 B1) 10.Nc3 Nbd7 (10...Be7 11.Nf3 Nbd7 12.Bb2 0–0 13.0–0 Qc7 14.Nh4 Be6) 11.Nf3 Be7 12.Bb2 0–0 13.0–0 Qc7 14.Nh4 Be6; B2) 10.Bb2 cb5 (10...Nbd7 11.Nc3 Be7 12.Nf3 0–0 13.0–0 Qc7 14.Nh4 Be6) 11.cb5 Nbd7 12.Nf3 Be7 13.Nc3 0–0 14.Nh4 Be6; B3) 10.Nf3 Nbd7 (10...cb5 11.cb5 Nbd7 12.0–0 Qc7 13.d4 Be7 14.Qc1 Qb8) 11.Nc3 Be7 12.bc6 bc6 13.Nh4 Be6 14.Qa4 Qc7; C) 9...Qa5 C1) 10.Bc3 Qa2 (10...Qc7 11.Nf3 cb5 12.cb5 Be7 13.Qc2 0–0 14.0–0 h6) 11.Nf3 cb5 12.cb5 Bf5 13.d3 Be7 14.Bd2 0–0; C2) 10.Bb2 cb5 (10...Be7 11.Nc3 0–0 12.Nf3 Bf5 13.Nh4 Be6 14.Qc2 Qb4) 11.cb5 Bb5 12.Nc3 Be2 13.Nge2 Nc6 14.0–0 Be7; C3) 10.Nc3 d5 (10...Qb4 11.Nf3 Be6 12.Qa4 Qa4 13.Na4 cb5 14.cb5 Nbd7) 11.Qb1 g6 12.bc6 Nc6 13.cd5 Nb4 14.Bb2 Nfd5; D) 9...cb5 D1) 10.Nc3 b4 (10...bc4 11.Bc4 Qa5 12.Nf3 d5 13.Bb3 Nc6 14.Ne2 Bd6) 11.Nb5 Nc6 12.Nf3 Be7 13.Qc2 0–0 14.0–0 Qb6; D2) 10.cb5 Bf5 (10...Be7 11.Nf3 Bf5 12.0–0 Nbd7 13.d4 0–0 14.de5 de5) 11.Nf3 Nbd7 12.0–0 Be7 13.d4 e4 14.Nh4 Be6.

9.Nf3 A) 9...Bf5 A1) 10.Nh4 Be6 (10...Bg4 11.Be2 Be2 12.Qe2 g5 13.Nf3 g4 14.Nh4 Qa5) 11.Nc3 Be7 12.Qc2 Nbd7 13.Nf5 0–0 14.bc6 bc6; A2) 10.Bb2 cb5 (10...Nbd7 11.Nc3 Be7 12.Be2 0–0 13.0–0 Qc7 14.Nh4 Be6) 11.cb5 Nbd7 12.Nc3 Be7 13.Bc4 0–0 14.Qe2 Qc7; A3) 10.Nc3 Be7 (10...Nbd7 11.Be2 Be7 12.Nh4 Be6 13.0–0 0–0 14.Bb2 Qc7) 11.h3 Nbd7 12.g4 Bg6 13.Nh4 Nc5 14.Ng6 hg6; B) 9...Be7 B1) 10.Nc3 Bf5 (10...cb5 11.Nb5 Na6 12.Be2 0–0 13.0–0 Nc7 14.Nc3 Ne6) 11.Be2 0–0 12.d4 Nbd7 13.0–0 Qa5 14.Nh4 Be6; B2) 10.h3 e4 (10...cb5 11.cb5 Bf5 12.g4 Be6 13.Nc3 Nbd7 14.Ng5 0–0) 11.Nd4 c5 12.Nb3 0–0 13.Nc3 Bf5 14.g4 Bg6; B3) 10.Bd3 cb5 (10...Be6 11.bc6 Nc6 12.Ng5 Bd7 13.Nc3 Nb4 14.Be2 h6) 11.cb5 Be6 12.Ng5 Nbd7 13.Ne6 fe6 14.Nc3 0–0; C) 9...cb5 C1) 10.Bc3 bc4 (10...e4 11.Nd4 bc4 12.Bc4 d5 13.Be2 Nc6 14.Qb3 Bc5) 11.Bc4 e4 12.Nd4 d5 13.Be2 Be7 14.Qb3 Na6; C2) 10.Nc3 b4 (10...e4 11.Nd4 b4 12.Nd5 Nd5 13.cd5 Qa5 14.Bc4 Na6) 11.Nb5 Nc6 12.Bd3 Be7 13.0–0 0–0 14.Bb2 e4; C3) 10.cb5 Bf5 (10...Be7 11.Bd3 Be6 12.Ng5 Nbd7 13.0–0 Nc5 14.Ne6 fe6) 11.Nc3 Be7 12.Bc4 0–0 13.0–0 Nbd7 14.Qe2 Qc7; D) 9...e4 D1) 10.Ng5 Bf5 (10...d5 11.Nc3 h6 12.Nh3 Bd6 13.bc6 bc6 14.cd5 0–0) 11.Qc2 d5 12.bc6 bc6 13.cd5 cd5 14.Nc3 h6; D2) 10.bc6 bc6 (10...Nc6 11.Ng5 Qe7 12.Qa4 Ng4 13.Qa8 Nd8 14.Nh3 Bc6) 11.Nd4 Na6 12.Nc3 Be7 13.Be2 0–0 14.0–0 Nc5; D3) 10.Nd4 Be7 (10...c5 11.Ne2 Be6 12.Bf6 Qf6 13.Nf4 g5 14.Ne6 Qe6) 11.Nc3 0–0 12.Qc2 d5 13.cd5 cd5 14.Be2 Bd6.

9.Nh3 A) 9...Be7 A1) 10.Bb2 cb5 (10...0–0 11.Nc3 cb5 12.cb5 d5 13.Bd3 d4 14.ed4 Bh3) 11.cb5 0–0 12.Be2 Bf5 13.0–0 Nbd7 14.Nc3 Qc7; A2) 10.Be2 cb5 (10...0–0 11.Nc3 cb5 12.Nb5 Nc6 13.Qb1 h6 14.Bb2 Qc8) 11.cb5 Bf5 12.Nc3 Nbd7 13.0–0 0–0 14.Bb2 Qc7; A3) 10.Nc3 Bf5 (10...cb5 11.Nb5 0–0 12.Be2 Nc6 13.0–0 Bh3 14.gh3 Qd7) 11.Be2 Nbd7 12.0–0 0–0 13.Ng5 h6 14.f4 e4; B) 9...Bf5 B1) 10.Be2 cb5 (10...Be7 11.Nc3 0–0 12.g4 Bd7 13.Bb2 cb5 14.cb5 Qa5) 11.cb5 Nbd7 12.Nc3 Be7 13.0–0 0–0 14.Bb2 Qc7; B2) 10.Bb2 Nbd7 (10...Be7 11.Nc3 0–0 12.Be2 cb5 13.Nb5 Nc6 14.0–0 Qd7) 11.Nc3 Nc5 12.Be2 Be7 13.d4 Ne6 14.0–0 0–0; B3) 10.Nc3 Be7 (10...Qa5 11.Be2 Be7 12.0–0 0–0 13.f4 Bh3 14.gh3 Nbd7) 11.f3 0–0 12.Bb2 Nbd7 13.g4 Bg6 14.f4 h6; C) 9...Qa5 C1) 10.Bc3 Qa2 (10...Qb6 11.Bd3 cb5 12.cb5 Be7 13.0–0 0–0 14.Na3 d5) 11.Be2 cb5 12.cb5 Bf5 13.d3 Nbd7 14.Bd2 Nc5; C2) 10.Bb2 Bf5 (10...cb5 11.cb5 Bb5 12.Bc3 Qa4 13.Bb5 Qb5 14.Na3 Qc6) 11.Nc3 Be7 12.Be2 Qb4 13.Qa1 0–0 14.0–0 Nbd7; C3) 10.Nc3 Bf5 (10...Be7 11.Bd3 h6 12.0–0 0–0 13.Qa4 Qa4 14.Na4 cb5) 11.Be2 Nbd7 12.0–0 Be7 13.Ng5 0–0 14.f4 ef4; D) 9...cb5 D1) 10.Nc3 b4 (10...bc4 11.Bc4 Qa5 12.0–0 d5 13.Bb3 Bd6 14.f4 Bg4) 11.Nb5 Be7 12.Bb2 0–0 13.Be2 Nc6 14.0–0 Bf5; D2) 10.f4 b4 (10...Qa5 11.fe5 Qa1 12.ef6 bc4 13.fg7 Qg7 14.Nc3 b5) 11.fe5 de5 12.Be5 Nc6 13.Bb2 Bd6 14.Qc2 Qc7; D3) 10.cb5 Be7 (10...Bf5 11.Nc3 Be7 12.Qf3 Qd7 13.e4 Bg4 14.Qe3 0–0) 11.Nc3 0–0 12.Be2 Bf5 13.0–0 Nbd7 14.Bb2 Qc7.

4.e3 Nf6

5.a4 Be7 6.Be2 0–0 7.c4 c5 8.Nf3 Bf5 9.0–0 Nbd7 10.d3= Be6 11.e4 a6 12.Ng5 ab5 13.ab5 Ra1 14.Ba1 Nb6 15.Ne6 fe6= 16.Nc3 Qc7 17.Qc2 Ra8 18.Bb2 Qb8 19.h3 g6 20.Ra1 Ra1 21.Ba1 Qa7 22.Bb2 Nfd7 23.Bg4 Kf7 24.Bc1 Nf6+= 25.Qe2 Ng4 26.Qg4+= Qa1 27.Ne2 Na4 28.Kh2 Nc3 29.Nc3 Qc3 30.Qf3 Kg7 31.h4?? Qc1–+ 32.h5 Bg5 33.hg6 hg6 34.Qg4 Qf4 35.Qf4 ef4 36.f3 e5 37.Kg1 Bd8 38.Kf1 Ba5 39.Kf2 b6 40.g3 fg3 41.Kg3 Bd2 42.Kf2 Kf6 43.Ke2 Bf4 44.Kd1 Kg5 45.Ke2 Kh4 46.Kf2 Kh3 47.Ke2 Kg3 48.d4 cd4 49.Kd3 Kf3 50.c5 dc5 51.Kc4 Ke4 52.Kb3 g5 53.Kc4 (53…g4 54.Kb3–+). LaZZZZZZZZZZzzy – MrBush, Live Game Caissa's Web, 2004.

5.a4 Be7 6.Be2 c6 7.c4 a6 8.Nf3 ab5 9.ab5 Ra1 10.Ba1 cb5 11.cb5 Qa5 12.Bc3 Qb6 13.0–0 Bb5?? 14.Bb5?? Qb5–/+ 15.Na3 Qc6 16.Qb3 0–0 17.d4 ed4 18.Nd4= Qd7 19.Nab5 Ne4 20.Bb4 Nc6 21.Nc6 bc6 22.Nc3? Nc3?? 23.Bc3–/+ c5 24.Qb2 f6 25.Rd1 Qc7 26.Qa2 Kh8 27.Ba5 Qc6 28.Qd2 Ra8 29.Bc3 Ra3 30.Bb2 Ra4 31.Qc2 Qa8 32.Bc3 h6 33.h3 Rc4 34.Qd3 Qa4 35.Bb2 Rb4 36.Bc3 Rb8 37.Qd5 Qd7 38.Ba1 Rf8 39.Qc5= dc5 40.Rd7 Re8 41.Rc7 Bf8 42.Bc3 Kg8 43.h4 Ra8 44.g3 Ra3 45.Be1 Ra1 46.Kf1 Kh7 47.Ke2 Kg6 48.Rc8 Kf7 49.h5 Ra2 50.Kf3 Rf2?? 51.Kf2 Bd6 52.Rc7 (52.Rc7 Bc7 53.e4–+; better is 52.e4+–) 1–0. ZZMeB4 (1655) – BANZAI (1675), caissa.com, 2007.

5.c4 Be7 6.Be2 0–0 7.Nf3 Bg4 8.0–0 Nbd7 9.d3 Re8 10.e4 Bf8 11.Nbd2 Bf3 12.Nf3 Nc5 13.d4 ed4=+ 14.Nd4 Re4 15.Bf3 Re7 16.Qc2 Rb8 17.a4 b6?? 18.Nf5?? Re8 19.Bc6 Nfd7 20.Rfe1 Re1 21.Re1 Ne5 22.Nd4 Be7 23.Qf5 Bf6 24.Ba1 Ned3 25.Re8–/+ Qe8 26.Be8 Re8 27.g3 h6 28.Nc6?? Re1?? 29.Kg2= Ba1 30.Qd7?? Nd7–+ 31.Nd8 N7e5 32.f4 Re2 33.Kh3 Nf3 34.Nc6 Rh2 35.Kg4–+ Ng1 36.Ne7 Kf8 37.Nf5 Nf2# 0–1. TIROLOCO – wimplo, Live Game Caissa's Web, 2004.

5.c4 Be7 6.Nf3 b6 7.Be2 c6 8.a4 cb5 9.cb5 a6 10.0–0 ab5 11.ab5 Ra1 12.Ba1 Qc7 13.Nc3 0–0 14.d3 d5 15.d4 e4 16.Ne5 Be6 17.Na4 Nfd7 18.Nd7 Nd7 19.Bg4 Bg4 20.Qg4 f5 21.Qd1 Bd6 22.g3 Nf6 23.Qe2 Ng4 24.h3 Nf6 25.Nc3 Qc4 26.Rc1 Qe2 27.Ne2 Nd7?? 28.Bb2 Rd8 29.Nf4 Bf4= 30.ef4 Kf7 31.Ba3 Ke6 32.Rc6+= Kf7 33.Rc7 Ke8 34.Bd6 Ra8 35.Kg2 Kd8 36.Rb7 Kc8 37.Rc7= Kd8 38.Rc2 Rc8?? 39.Ra2?? Nc5?? 40.dc5+– bc5 41.Ra7 c4 42.Rg7 c3 43.Rh7 c2 44.Ba3 c1Q 45.Bc1 Rc1 46.b6 Rc8?? 47.b7 Rb8 48.Rh8 Kc7 0–1. stoker – dolphin2, Live Game Caissa's Web, 2004.

5.d4 A) 5...ed4 6.Bd4 (6.Qd4 a6 7.Qa4 d5 8.Nf3 c6 9.Nc3=) 6...a6 7.Nc3 Be7 8.ba6 ba6 9.Bc4=; B) 5...Qe7 6.Nd2 (6.c4 a6 7.Nd2 ab5 8.de5 de5 9.cb5=; 6.de5 de5 7.Nf3 e4 8.Ne5 Be6 9.Ba3=; 6.Be2 a6 7.de5 de5 8.ba6 Na6 9.Nf3=; 6.a3 e4 7.d5 a6 8.Nc3 ab5 9.Bb5=) 6...e4 7.c4 a6 8.d5 ab5 9.Bf6=; C) 5...c6 6.de5 (6.Nd2 e4 7.bc6 Nc6 8.c4 d5 9.a3+=; 6.c4 e4 7.bc6 Nc6 8.Nd2 d5 9.cd5+=; 6.Be2 e4 7.c4 d5 8.Qb3 cb5 9.cb5+=; 6.Nc3 Qa5 7.Qd2 ed4 8.ed4 d5 9.Nf3+=) 6...de5 7.Be5 cb5 8.Nd2 a6 9.Bd3=; D) 5...e4 6.c4 (6.Nd2 d5 7.c4 Bb4 8.Qc2 a6 9.ba6+=; 6.d5 a6 7.Nc3 ab5 8.Bb5 c6 9.Bc4+=; 6.a4 d5 7.c4 Be6 8.Ne2 dc4 9.Nd2+=) 6...a6 7.ba6 Na6 8.Nc3 c6 9.Nge2=.

5.Be2 A) 5...e4 6.Nc3 (6.f3 d5 7.c4 Be6 8.cd5 Nd5 9.Nc3=; 6.d3 Bb5 7.de4 Bc6 8.f3 d5 9.ed5+=; 6.Bd4 c5 7.Bb2 d5 8.c4 Be6 9.cd5+=; 6.c4 a6 7.Nc3 ab5 8.cb5 d5 9.d3+=) 6...d5 7.f3 Bb4 8.a3 Bc3 9.Bc3=; B) 5...Be7 6.Nf3 (6.Nc3 0–0 7.Nf3 a6 8.a4 e4 9.Nd4=) 6...a6 7.a4 c5 8.0–0 0–0 9.Nc3=; C) 5...c6 6.c4 (6.a4 e4 7.d3 d5 8.Nd2 Bb4 9.c3=; 6.d4 e4 7.c4 d5 8.Qb3 cb5 9.cb5+=; 6.Nc3 cb5 7.Bb5 d5 8.Nf3 Bd6 9.0–0+=) 6...Be7 7.d4 e4 8.d5 0–0 9.bc6=; D) 5...a6 6.c4 (6.ba6 Na6 7.Nf3 Be7 8.0–0 0–0 9.Nc3+=; 6.a4 e4 7.Nc3 d5 8.ba6 Na6 9.Qb1+=; 6.Nc3 ab5 7.Nb5 Be7 8.Nf3 c6 9.Nc3+=; 6.Na3 e4 7.c4 Be6 8.Qb3 Nbd7 9.ba6+=) 6...ab5 7.cb5 Be6 8.a3 Be7 9.Nf3+=.

5.Nf3 a6 6.a4 (6.Nc3 Be7 7.a4 e4 8.Nd4 c5 9.bc6=; 6.ba6 Na6 7.Be2 Be7 8.0–0 0–0 9.Nc3+=; 6.Na3 ab5 7.Nb5 Be7 8.Nc3 0–0 9.e4+=) 6...ab5 7.ab5 Ra1 8.Ba1 Be7 9.Be2=.

5.Nf3 c5 6.c4 (6.Bd3 a6 7.Nc3 ab5 8.Bb5 e4 9.Bd7+=) 6...e4 7.Ng1 a6 8.ba6 Na6 9.Nc3+=.

5.Nf3 c6 6.c4 (6.a4 e4 7.Nd4 d5 8.Be2 Bd6 9.0–0=; 6.Nc3 Be7 7.Be2 cb5 8.Nb5 a6 9.Nc3+=; 6.Na3 Be7 7.Be2 a6 8.bc6 Nc6 9.0–0+=; 6.bc6 Nc6 7.Be2 Be7 8.c4 e4 9.Nd4+=) 6...Be7 7.Be2 e4 8.Nd4 0–0 9.0–0=.

5.Nf3 Be7 6.Be2=+ 0–0 7.0–0= Be6 8.c4 h6 9.a4 a6 10.Nc3 ab5 11.ab5 Ra1 12.Qa1 Nbd7 13.d3 Nh7 14.Nd2 f5 15.f3 Nc5 16.Nd5 Bd5= 17.cd5 Qd7? 18.d4+– ed4 19.Bd4?? b6? 20.Bg7+/– Rf7? 21.Bd4 Bf6 22.Bf6 Nf6+/– 23.e4 fe4+= 24.Ne4 Nfe4 25.fe4 Rg7? 26.h3 Ne4?? 27.Bg4 Qe7?? 28.Be6 Kh8 29.Kh2 Qg5 30.Rf8 Kh7 31.g4 Qd2= 32.Kg1 Qe3–/+ 33.Kf1 Nd2 34.Kg2= Qe4?? 35.Kh2?? Qe2 36.Kg3 Ne4?? 37.Kh4+– Qe3 38.Bf5 Rg6 39.Rf7 Kg8+= 40.Bg6?? Qg5#. stoker – Motion8, Caissa.com, 2004.

5.Nf3 Be7 6.Be2 a6 7.a4 c5 8.0–0 0–0 9.Nc3 =.

4.e4 Nf6

5.Nc3 a6 6.a4 =.

5.Nc3 c6 6.Nf3 cb5=+ 7.Bb5 Ne4?? 8.Bd7+– Nd7 9.Ne4 Be7 10.0–0 Qc7 11.d4 ed4 12.Bd4 0–0 13.Nfg5 d5 14.Qg4 de4 15.Ne6! (15…Bf6 16.Bf6+–; 15.Ne4?! g6=) 1–0. Bell,Alexander – Hill,Roy, compuserve, 1997.

5.Nc3 Be7 6.a4 c6 7.Nf3 0–0 8.Be2 Nh5 9.0–0 Nf4= 10.Bc4 Bg4 11.h3 Bh5 12.Kh2 Bf6 13.g3 Ne6 14.g4 Bg6 15.d3 Nd7 16.Ba3 Ng5 17.Ng5 Bg5 18.Bd6 Bf4 19.Kg2 Re8 20.Ne2 Nf6 21.Nf4 Qd6 22.Ng6 hg6 23.Qf3 Re7 24.Rh1 Nh7 25.h4 Rf8 26.g5 Kh8 27.Rh3 f6?? 28.h5 Ng5 29.hg6 Nh3 30.Qh3# 1–0. mic (2150) – awfen (1995), net–chess.com, 2009.

5.Nc3 g6 6.a4 Bg7 7.Nf3 0–0 8.Be2 c6 9.Ba3 Re8 10.Bd6+= Bg4 11.Be5?? Bf3–/+ 12.Bf6 Be2 13.Bd8 Bd1 14.Kd1 Rd8–+ 15.Ra3 cb5 16.Nb5 Nc6 17.d3 a6 18.Nc7–/+ Rac8 19.Nd5 Kf8 20.f4 Nd4 21.c4 Rc5 22.e5? b5–+ 23.ab5 ab5 24.Ra5? Nb3 25.Ra7 bc4 (25...bc4 26.Kc2 Rdd5 27.dc4 Nd2 28.Ra8 Ke7–+) 0–1. mic (2220) – lwarren (2245), net–chess.com, 2008.

3.b5 Nd7

4.c4 g6 5.d4= Bg7 6.e3 Ngf6 7.Be2 0–0 8.Nd2 Re8 9.a4 e4 10.d5 Nc5 11.Bd4 b6 12.h3 Nfd7 13.Bg7 Kg7 14.Nb3 Qf6 15.Nd4 Ne5–/+ 16.f4 ef3! 17.gf3 Qh4 18.Kf1–/+ Ned7 19.e4 ˝–˝. Wartig,Wolfgang – Hanke, 1997.

4.e3 b6 5.Nf3 Bb7 6.Be2 f5 7.0–0 Ngf6 8.c4 Be7 9.d3 0–0 10.Qc2 f4 11.ef4+= ef4 12.d4 Ne4 13.d5 Ng5 14.Ng5+/– Bg5 15.Bg4 c6?? 16.Be6 Kh8 17.bc6 Bc6 18.dc6 Nc5 19.Bd5 Rc8 20.Nd2 Bf6 21.Nf3 Bb2 22.Qb2 Qe7 23.Qd4 Ne6 24.Qe4 Rce8 25.Rfe1 Rf6 26.Ng5! f3 27.Ne6 fg2 28.Re3 Qf8 29.Rae1 Rf2 30.Qg4 Rf1 31.Rf1 Qf1# 0–1. TIROLOCO – Schnick, Live Game Caissa's Web, 2004.

4.e3 Be7 5.Nf3 Bf6 6.d3 b6 7.Nbd2 Bb7 8.c4 a6 9.a4 a5 10.Be2 Ne7 11.0–0 g6 12.Qc2 0–0 13.d4 Nf5 14.d5 Nc5 15.Ba3 (15.e4!? Ne7 16.Rae1+=) 15...e4= 16.Nd4 (16.Ne4 Ne4 17.Qe4 Ba1 18.Ra1 Qf6+=) 16...Nd4 17.ed4 Bd4 18.Rad1 e3 19.Ne4 ef2 20.Kh1 Be5 21.Nc5 (better is 21.Bc5 dc5 22.Nf2+=) 21...Bh2?? (21...Qh4 22.g3 Bg3 23.Rf2 Bf2 24.Nb7–+) 22.Rf2?? (better is 22.Bg4 Bg1 23.Nb7 Qh4 24.Bh3=) 22...Qh4–+ 23.Rf3?? (23.Bg4 Be5 24.Bh3 dc5 25.Rd3–+) 23...Bg3 (23...Bg3 24.Kg1 Qh2 25.Kf1 Qh1; 23...dc5? 24.Rh3 Qg5 25.Rh2+–) 0–1. Genne,Rene (1770) – Hoareau,Thierry, Saint Denis REU, Reunion Open, 2013.

4.e3 g6 5.c4 b6 6.Nf3 Bg7 7.Be2 Bb7 8.0–0 Qe7 9.d4 Ngf6 10.a4 0–0 11.de5 de5= 12.Ne5 Ne5–/+ 13.Ba3 Qe6 14.Bf8 Kf8 15.Nd2 Rd8 16.Qc2 Neg4 17.Rad1 Qe5 18.g3 Qh5 19.h4 Qe5 20.Nf3=+ Qe7 21.Rd8 Qd8 22.Rd1 Qe7 23.Qd3 Kg8 (23...Ke8!?–/+) ˝–˝. Herm,Florian – Kerger,Juergen, Baden–ch AT2, 2002.

4.Nf3 Nb6 5.a4 Nc4 6.Bc3 Nf6 7.d3 Nb6 8.e4 Bg4 9.Be2 Be7 10.h3 Bh5 11.Nbd2 0–0 12.0–0 Re8 13.a5+= Nbd7 14.Bb4 d5= 15.Be7 Qe7 16.Re1 de4 17.de4 Nc5 18.Bd3 Rad8=+ 19.Qb1 b6 20.Re3= Nfd7 21.a6 Bg6 22.Nb3 h6 23.Nc5= Nc5 24.Ne1 Rd4 25.Nf3= Rd6 26.Kf1 Red8 27.Ra3? Be4!–+ 28.Qb2 Bd3 29.cd3 Nd3 30.Qc3 Nb4! 31.Re5 Rd1 32.Ne1 Qd6 33.Re3? Nd5 (33...Nd5 34.Qe5 Ne3 35.Re3 Qe5 36.Re5 f6–+) 0–1. mic (2200) – grahamtrue (2100), net–chess.com, 2008.

4.Nf3 Nc5 5.e3 Na4 6.Bc1 g6 7.c4 Bg7?? 8.Qa4+– Bd7 9.Bb2 a6 10.Qb3 Bf6 11.Be2 Ne7 12.0–0 Bg7 13.d4 e4 14.Ng5 0–0 15.Ne4 Nf5 16.a4 Nh4 17.c5 ab5 18.ab5 Bf5 19.Ned2 Ra1 20.Ba1 dc5 21.Nc4 Qa8 22.Bc3 b6 23.dc5 (better is 23.f3 cd4 24.Bd4 Bd4 25.ed4+–). stoker – Wooopin, Live Game Caissa's Web, 2005.

4.Nf3 Ngf6 5.e3 b6 6.Be2 Bb7 7.0–0 Be7 8.d3 0–0 9.e4 Nc5 10.c4 Ncd7 11.Nc3 a6 12.a4 a5 13.Nd5 Bd5 14.ed5 Nc5 15.Ng5 Nfd7 16.Ne4 Ne4 17.de4 Nc5 18.Qc2 Bg5 19.Bc1 Bc1=+ 20.Rac1 Qd7 21.f4 ef4–/+ 22.Rf4 Rae8 23.Bf3 Nb7 24.Bg4 Qd8 25.Rcf1 Qg5 26.Qe2 Nd8 27.Qf2 f6 28.Qg3 Nf7 29.h4 Qe5 30.Be6 Qd4 31.Kh2 Kh8 32.Rg4 Qe5 33.Qe5 Ne5= 34.Rgf4 Ng6 35.R4f3 Nh4 36.Rf4 Ng6–/+ 37.Rg4 Ne5 38.Rh4 Nd3 39.Rh1 Nc5 40.Kg3 Ne4?? 41.Kf3?? Nd2?? 42.Ke2+– Nb3 43.Rh7 1–0. stoker – j08, Live Game Caissa's Web, 2004.

4.g3 Nb6 5.Bg2 Nc4 6.Bc3 Be7 7.d3 Nb6 8.a4 a5 9.ba6 Ra6=+ 10.a5 Nd7 11.f4 ef4?? 12.Bg7+/– Bf6 13.Bh8 Bh8 14.d4 c6 15.c3 c5 16.Qd3+– Ra5?? 17.Ra5 Qa5 18.Qh7 Bd4 19.Qg8 Ke7 20.Nf3 Bc3 21.Nc3 Qa1 22.Nd1 Qa5 23.Kf2 c4 24.Qg5 Nf6 25.Qa5 1–0. MasterofDisaster – aargau15, Live Game Caissa's Web, 2004.

4.e3 Ngf6

(--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 Nbd7).

5.c4 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 Nbd7).

3.b5 Be6

4.a4 g6 5.e4 Bg7 6.Nf3 c6 7.Be2 Bg4 8.h3 Bf3 9.Bf3 Nf6 10.0–0 0–0 11.c4 cb5 12.ab5 Qc7 13.d3 Nbd7 14.Nd2 a6 15.ba6 Ra6 16.Ra6 ba6 17.Qa4 Nc5= 18.Qc2 Nfd7 19.Ra1 Bh6 20.Nb3 Qb6 21.Nc5 Nc5 22.Bc3 Ra8 23.Bd1 a5 24.Rb1 Qc6 25.Ra1 Qb6 26.Qa2 a4 27.Rb1 Qc6 28.Bc2 a3 29.Bb4+= Qa6 30.Bc5 dc5=+ 31.Rb5 Rc8 32.Bb1 Qa4 33.Bc2 Qa7 34.Kf1 Bc1 35.Ke2 Rb8 36.Rb8 Qb8 37.Bb3 Bb2 38.f3 f5 39.Qb1?? Qb3–+ 0–1. mic (2100) – islanderfan (1880), net–chess.com, 2008.

4.d4= e4 5.Nd2 (5.d5 Bd7=) 5...f5 (5...d5 6.c4+=) 6.g3 (6.Nh3 d5=) 6...Nf6 7.c4. Krivoshapko,Alexander (2095) – Tolkachiov,Vladimir (2100), Omsk City–ch, 2008.

4.e4 Nf6 5.Nc3 =+.

4.e3

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.b5).

4.e3 f5 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.b5 Be6).

4.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 Be6).

4.e3 Nf6 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.b5).

4.e4 Ne7

5.c4 a6 6.ba6 Na6 7.Nf3 =+.

5.c4 Nc8 6.d4 ed4 7.Nf3 Bg4 8.Bd4 Nb6 9.Nbd2 N8d7 10.h3 (10…Be6 11.a4+=). Trkn – guest2721, ICC, 2004.

5.c4 Ng6 6.Nc3 c6 7.a4 Be7 8.h3 0–0=+ 9.Nf3 a6 10.d3 ab5 11.ab5 Ra1 12.Qa1 Bf6 13.Be2 d5 14.cd5 cd5=+ 15.ed5 Bd5 16.Ne4 Nd7 17.g3 Re8 18.0–0 Qb6 19.Rb1 Be4 20.de4= Nc5 21.Nd2 Bg5 22.Nc4 Qe6 23.h4 Bh4 24.gh4 Qh3?? 25.Qa3+– Qh4? 26.Qc5 Nf4 27.Bf3 Qh3 28.Ne5 Qh6 29.Ng4 Qh4 30.Rd1 Ne6 31.Qe5 Qg5 32.Qg5 Ng5 33.Kg2 h6 34.e5 Re7 35.b6 Re6 36.Rd8 Kh7 37.Rd6 Re7 38.Bd5 h5 39.Ne3 (39...g6 40.Bb3+–) 1–0. Baeumcher,Karl – Fischbach,Horst, Bahn–ch Pocking, 1996.

5.Nf3 f5 =.

3.b5 Be7

4.c4 f5 5.e3 Nf6 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7 6.b5).

4.e3 f5 5.Nf3 Nf6 6.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7 6.b5).

4.Nf3 Bf6 5.e3 e4 6.Nd4= c5 7.bc6 Nc6 8.Bb5 Bd7 9.0–0= a6 10.Ba4 b5 11.Bb3+= Nd4 12.ed4 Qb6? 13.d5?? Bb2–+ 14.Nc3 Ba1 15.Qa1 b4 16.Ne4 Bf5 17.Ng5?? h6 18.Nf3?? Nf6–+ 19.c3 a5 20.Re1 Kd7 21.Nd4 Ne4?? 22.Nf5?? Nd2 23.cb4 Ne4?? 24.Ne3 Qb4 25.Qd1 Nc3 26.Qg4?? Kc7 27.Qf5 Nd5?? 28.Qf7 Kc6 29.Qd5 Kb6 30.Nc4 Kc7 31.Re7 Kd8 32.Qf7 Ra7+– (32...Ra7 33.Qg7 Re7 34.Qh8 Kc7+–). metal – chessdv82, caissa.com, 2006.

4.c4 Nf6

5.a4 Bd7 6.Nc3 c6 7.e3 0–0 8.Be2 h6 9.Nf3 Nh7 10.0–0 f5 11.d3 Nf6 12.Nd2 a6 13.Nb3 a5 14.Qc2 Qc8 15.Qd2 d5 16.Na2 b6? 17.Be5+/– Be6 18.Rac1 Rd8 19.Qb2 Nbd7 20.Bc3 c5 21.Nd2 Nf8 22.Nf3 Ng6 23.Ne5 Ne5 24.Be5 Qd7 25.Rcd1 d4 26.Bf3 Ra7 27.Qe2 Qe8 28.e4?? Ng4? 29.ef5+– Ne5 30.Qe5 Bf7 31.Rfe1 Qf8 32.Qg3 Bd6 33.Qg4 Kh8 34.Rd2 Be8 35.Rde2 Bd7 36.Be4 Bc8 37.Qg6 Rf7 38.f6 gf6 39.Nc1 Bf4 40.g3 Rg7= 41.Qh5 Bg4 42.Qh4 Bc1 43.Rc1? Be2–+ 44.Qh6 Kg8 45.Re1 Bg4 46.f3?! Bc8 47.Bg6?? Bf5–+ (47...Bf5 48.Qg7 Kg7 49.Bf5 Re8–+) 0–1. Harders,Walter – Seemann,Paul, Schleswig Holstein–ch, 1991.

5.h3 b6 6.Qc2 c6 7.a4 c5 8.Rh2 Bb7 9.g4 Nbd7 10.Nc3 0–0 11.d3 d5 12.Bg2 Bd6 13.Bd5 Bd5 14.Nd5 e4 15.Rg2 ed3 16.Qd3= Nd5 17.Qd5+/– Nf6 18.Bf6 Qf6=+ 19.Rd1 Rfd8 20.Qf3 Qc3?? 21.Qc3+– (21.Qc3 Rd7 22.Kf1+–) 1–0. riverborne – ladyday, Live Game Caissa's Web, 2005.

4.e3 Bf6

5.Be2 Bf5 6.c4 Be4 7.Nf3 Nd7 8.Qc2?? Bc2–+ 9.Nc3 Ne7 10.d3 Ng6 11.e4 Nf4 12.Bf1 Bd3 13.Kd2 Bf1 14.Rhf1 Ng2 15.Nd5 Nc5 16.Ne1 Ne4 17.Ke2 Nf4 18.Nf4 ef4 19.Kf3 Bb2 20.Rb1 Nd2 21.Kf4 Nb1 22.Ng2 Nd2 23.Re1 Kf8 24.Kg3 Qg5 25.Kh3 Be5 26.f4–+ Qh5 27.Nh4 Bf4 28.c5 Nf3 29.Kg2 Ne1 30.Kf2 Qh4 31.Ke2 Bh2 32.cd6 cd6 33.Kd2 Re8 34.a4 Bf4 35.Kc3 Qg3 36.Kb4 b6 37.a5 Nc2 38.Kc4 Re4 39.Kd5–+ Qd3 40.Kc6 Qc4 41.Kb7 Qd5 42.Ka7 Re7 43.Ka6 Nb4 44.Kb6 Rb7# 0–1. TIROLOCO – chessdv8, Live Game Caissa's Web, 2004.

5.Ne2 a6 6.d4 ab5 7.d5 c6 8.Nec3 Bf5 9.Nd2 e4 10.Nce4?? Bb2–+ 11.Rb1 cd5 12.Rb2?? de4 13.Rb5 Ra2?? 14.Rf5=+ Nf6 15.Bb5 Nc6 16.0–0 0–0 17.c4 Qb6?? 18.Nb3?? Rfa8 19.Nd4? Nb4 20.Qb3 Nd3–+ 21.c5 dc5 22.Bd3 Qb3 23.Rf6?? Ra1 24.Bc2?? Rf1 25.Kf1 Qb2 26.Be4 Qc1 27.Ke2–+ Ra2 28.Kf3 cd4 0–1. MasterofDisaster – chessdv8, Live Game Caissa's Web, 2004.

4.e3 Nf6

(--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 Be7).

5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5).

3.b5 f5

4.a4 Nf6 5.c4 Be7 6.e3 0–0 7.Be2 Be6 8.Qb3 Nbd7 9.Nc3 Nc5 10.Qc2 c6 11.Nf3= e4 12.Nd4 Bf7 13.0–0 cb5 14.ab5 a6 15.Nf5+/– d5 16.Ne7 Qe7+/– 17.Nd5 Nd5 18.cd5 Rac8 19.Qc3 Nd3?? 20.Qg7# 1–0. OutOfBounce – rgv77, Live Game Caissa's Web, 2005.

4.c4 b6 5.Nc3 Nf6 (5...a6 6.d4=) 6.Nf3 (6.d4 Bd7=) 6...Be7 7.Qb3 (7.g3 a6=) 7...Nbd7 (7...a6 8.e3=) 8.g3 Nc5 (8...a6 9.Bg2 Bb7 10.0–0=) 9.Qc2 Nfe4 (9...0–0 10.Bg2 e4 11.Nd4=) 10.Bg2 Rb8 (10...0–0 11.d4 ed4 12.Nd4+=) 11.0–0 (11.d4!? Nc3 12.Bc3+/–) 11...Nc3 12.Bc3 (worse is 12.dc3 0–0+=) 12...0–0 13.d4 ed4 14.Nd4 Bd7 15.Bd5 Kh8 16.a4 (16.e3 Bf6+=) 16...a5 17.Qb2 (17.Rad1 Bf6+=) 17...Bf6= 18.Qc2 Qc8 (18...f4 19.gf4 Bd4 20.Bd4 Rf4 21.e3=) 19.f4 (19.Rfd1!?+=) 19…Qe8= ˝–˝. Reva_Nikitina,Zoya N (1800) – Dyachkov,Oleg (1800), Konakovo RUS, Chervonny Open, 2012.

4.c4 c5 5.a4 Nf6 6.Nc3 Be6 7.e3 Nbd7 8.Nf3 Be7 9.Ng5 Bg8 10.Be2 h6 11.Nh3 Bf7 12.d4 (12.Qc2 Be6=) 12...0–0 (12...cd4!? 13.ed4 Nb6–/+) 13.dc5 (13.d5 e4=) 13...Nc5+= 14.Qc2 Be6 15.Rd1 Qe8 16.f4 Ng4 17.Bc1 Bh4 18.g3 Be7 19.Nd5 Rc8 (19...Bd8!?–/+) 20.0–0+= Bd8 21.Bg4 fg4 22.Nf2 e4 (22...ef4!? 23.ef4 Bf5+=) 23.Rd4= Bf5 24.Rfd1 Rf7 (better is 24...Qe6+=) 25.h3?? (25.Ba3 Qe6=) 25...h5?? (better is 25...gh3 26.g4 Bd7–/+) 26.hg4+= hg4 27.Kg2 (27.Ba3 Nd3+=) 27...Ne6 28.Re4+= Be4 29.Ne4+– Rd7 30.Rh1 Qf7 31.Bb2 Nc5? 32.Nf2 Ne6 33.Ng4 Nf4 34.Nf4 Rc4 35.Qh7 Kf8 36.Ng6 Ke8 37.Qh8 Qg8 38.Qg8# 1–0. Yaroshenko,Alexandr – Ivasenko,A (1820), Yuzhny UKR, Open, 2011.

4.d3 Nf6 5.Nf3 Be7 6.g3 0–0 7.c4 a6 8.a4 ab5 9.ab5 f4?? 10.Bg2 Ra1= 11.Ba1 c6 12.0–0 Nbd7 13.Nbd2 Qb6 14.bc6 bc6 15.Qc2 Nh5 16.Rb1 Qc7= 17.g4 Nhf6 18.h3 h6 19.Bc3 d5= 20.cd5 cd5 21.Qb2 Bd6 22.d4 e4=+ 23.Nh4 Ba6 24.Bf1? e3–+ 25.Ndf3? ef2 26.Kf2 Qc3!! 27.Qc3 Ne4 28.Kg2 Nc3 29.Rb2 Re8 30.Nf5 Bc7 31.Rc2 Ba5 32.Ne5 Ne5 33.de5 Re5 34.Nd4 Re4 35.Nc6 Nd1 36.Na5 Ne3 (36...Ne3 37.Kf2 Nc2–+) 0–1. mic (2130) – kode (2370), net–chess.com, 2008.

4.d4 e4 =.

4.c4 Nf6

5.a4 Be6=+ 6.e3 Be7 7.Nf3 0–0 8.d4 e4 9.Ng5 Qd7 10.d5+= Bf7 11.Qd4 Nh5 12.Nf7 Rf7 13.Be2 Bf6 14.Qd2 Bb2 15.Qb2 Nf6 16.a5 Qe7 17.0–0+= Nbd7 18.b6 cb6 19.ab6 Nb6–/+ 20.Na3 Na4 21.Qb4 Nc5 22.Nb5 a6 23.Rfd1 Rd8 24.Nd4=+ Ng4 25.h3 Ne5=+ 26.Ra3 f4–/+ 27.Ne6 Ne6 28.de6–/+ Qe6 29.ef4 Rf4 30.c5 Qf6 31.cd6 Rf2 32.Qe4 Rf8 33.Re3= Nc6 34.Bc4 Kh8=+ 35.Qe6 Qg5 36.Qg4?? Qe3–+ (37.Kh2 Ne5–+) 0–1. Baxa,Ottokar – Bieringer,Konrad, Passau op 5th, 1997.

5.Nc3 Be7 6.Nf3 0–0 7.e3 Be6 8.d4 Nbd7 9.Be2 Ne4 10.0–0 Nc3 11.Bc3 e4 12.Nd2 c6 13.a4 d5 14.c5 f4 15.Bg4 Bg4 16.Qg4 fe3 17.fe3 Kh8 18.bc6 bc6 19.Qe6 Rc8 20.Nb3 Bg5 21.Bd2 Nf6 22.g3 Qc7 23.Kg2 Rb8 24.Rab1 Qc8 25.Qc8 Rfc8 26.h3 Kg8 27.Kf2 Nd7 28.Na5 Rf8 29.Ke2 Rf1 30.Rf1 Rc8 31.Rb1 Rb8 32.Rf1 Rc8 33.Be1 Bd8 34.Nb7 Bc7 35.Na5 Ba5 36.Ba5 Rb8 37.Bc7 Rb2 38.Ke1 Nf6 39.Rf2 Rb1 40.Ke2 Kf7 41.Rf5 g6 42.Rf4 Ke6 43.Be5 Nd7 44.Bc7 Rb2 45.Kf1 Ra2 46.a5 Rb2 47.Rf2 Rb1 48.Kg2 Rb3 49.Re2 Nf6 50.g4 Ne8 51.Be5 Ra3 52.Rb2 Ra5 53.Rb7 Nf6 54.Rg7 Ra2 55.Kg3 Nd7?? 56.Bd6+– Re2 57.Re7 Kf6 58.Rd7 Re3 59.Kg2 a5 60.Be5 Kg5 61.Rd6 Rc3 62.Rc6+– Rc2 63.Kf1 Kh4 64.Ra6 Kh3 65.Ra5 Kg4+/– 66.c6 Rc6 67.Rd5 Kf3= 68.Rc5 Rb6 69.Rc1 Rb5 70.Kg1 g5 71.Rf1 Kg4 72.Kf2 Rb3 73.Ke2 Rd3 74.Rd1 Rd1? 75.Kd1+– Kf5 76.Ke2 h5 77.Bg7?? h4= 78.d5 g4 79.Bd4 g3 80.Kf1 h3 81.Kg1 e3 82.Be3 Ke5 ˝–˝. Casamitjana Nunez,Andres – Gomez Guerrero,Manuel (2180), Pont de Vilomara op, 1998.

5.d4 Nbd7 =.

5.d4 e4 6.e3 Be7 7.Nd2 0–0 8.Ne2 Be6 9.Nf4 Bf7 10.d5 Nbd7 11.Nb3 Nc5 12.Nd4 Qd7 13.h4 Ng4 14.Be2 Ne5 15.Ba3 Bf6 16.Rb1 g6 (better is 16...Ng6!? 17.Ng6 Bg6 18.Bc5 dc5+=) 17.Bc5+/– dc5 18.Nde6 Be6 19.Ne6 (19.de6?! Qe8=) 19...Qd6 (19...Rf7!?+/–) 20.Nf8+– Rf8 21.Qb3 Qe7 22.g3 b6 23.a4 ˝–˝. Anders,Hartmut – Stummer,Anton, Nuremberg op, 1989.

4.d4 e4 5.e3 Nf6 6.Be2 (6.d5 Be7= 7.Nh3 Nbd7 8.Be2 0–0 9.Nf4 Nc5 10.0–0 g5 11.Nh5=; 6.Nh3 Be7 7.d5 0–0 8.Nf4 a6 9.a4 g5 10.Ne2 Ng4 11.Nd4=) 6...g6 (6...d5 7.c4= a6 8.Qa4 dc4 9.Bc4 c6 10.bc6 Nc6 11.Nc3=) 7.Nh3= Bg7 (7...a6 8.c4 (8.a4= d5 9.0–0 Bd6 10.Nc3 c6 11.bc6=) 8...ab5 9.cb5 Be7 10.d5 Nbd7 11.0–0+=) 8.0–0+= 0–0 (8...a6 9.a4 ab5 10.ab5 Ra1 11.Ba1+=) 9.c4 a6 10.Qb3 (10.a4 c5 11.bc6+=) 10...Qe7 (10...ab5 11.cb5+=) 11.Nc3 (11.ba6+=) 11...ab5 12.cb5 Be6 13.Bc4 (13.d5 Bf7=) 13...Bc4 14.Qc4 Qf7 15.Qf7 Rf7 16.a4 b6 (16...c5 17.Nf4=) 17.Nf4 Nbd7 18.Ne6 (18.Rfc1 Bh6+=) 18...Nf8= 19.Ng7 Kg7 20.Rfc1 Ne6 ˝–˝. Tiedemann,Joern (1940) – Langschmidt,Dirk (2100), RSS7E basic–22, 2010.

5.e3 Be7 6.Nf3 0–0 7.Be2 c6 8.0–0 Kh8 9.d4 e4 10.Nfd2 d5 11.Nc3 Be6 12.a4 Nbd7 13.Qc2 Rc8 14.c5 Qe8 15.a5 Qg6 16.a6 b6 17.bc6 Rc6 18.Qa4 Rcc8 19.Nb5 bc5 20.Na7 Rc7 21.Nb5 Rcc8 22.a7 c4 23.Qa6+= Bg8 24.Qb7 Bb4 25.Ba3 Bd2 26.Bf8 Rf8 27.a8Q Ra8 28.Ra8 h6 29.Rc8 Kh7 30.Ra1 f4 31.ef4 Bf4 32.Nc3 Be6 33.Raa8 Qg5 34.Qb1 Bf5 35.Qd1 e3+/– 36.fe3 Be3 37.Kh1 Bg4?? 38.Rh8 Kg6 39.Rhd8 Qf5? 40.Nd5!+– Qd5 41.Bg4 Qe4 42.Bd7 Nd7 43.Re8 Qf4 44.Qb1 Kf7 45.Re4 1–0. Grund,Karl – Jung, corr SOK–89–47, 1989.

4.e3

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.b5).

4.e3 Nf6 5.c4 Be7 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7 6.b5).

4.e3 Nf6 5.Nf3 Be7 6.d4 e4 7.Nfd2 d5 8.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7 6.d4 e4 7.Nfd2 d5 8.b5).

4.e3 Nf6 5.Nf3 Be7 6.d4 e4 7.Nfd2 d5 8.c4 c6 9.a4 0–0 10.Nc3 Be6 11.Qb3 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7 6.d4 e4 7.Nfd2 d5 8.b5 c6 9.a4 0–0 10.Qb3 Be6 11.Nc3).

4.Nf3 Nf6

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.b5 Nf6 5.Nf3).

3.b5 Bf5

4.Ba3 Nf6 5.e3 Be7 6.h3 0–0 7.Nc3 a6 8.Bb2 ab5 9.Nb5 c6 10.Nc3 b5 11.d3 d5 12.Nf3 Nbd7 13.Be2 d4 14.ed4=+ ed4?? 15.Nd4+– Bg6 16.Nc6 Qe8 17.Ne7 Qe7+/– 18.Nb5?? Rab8?? 19.Bf6 Nf6+/– 20.Nc3 Rfc8 21.Ne4 Ne4 22.de4 Qe4 23.0–0 Rc2 24.Bd3?? Qd3–+ 25.Qg4 h5 26.Qa4 Kh7 27.Rad1 Qc3 28.Qa7 Rc8 29.Rd7 Rc1 30.Rc1 Qc1 31.Kh2 Rc2 32.Kg3 Qg5 33.Kh2 Qf4 34.g3 0–1. pinecrest1981 – sabotage, Live Game Caissa's Web, 2004.

4.a4 Nf6 5.Nf3 Nbd7 6.d3 Be7 7.e4= Bg4 8.h3 Bf3 9.Qf3 0–0 10.Be2 a6 11.c4 ab5 12.ab5 Nc5 13.Ra8 Qa8 14.0–0 Qa2 15.Bc3 Na4 16.Bb4 Qb3 17.Bd2 Qc2 18.Be3 b6 19.Rc1+= Qb3 20.Bd1 Qb4?? 21.Bd2+– Qc5 22.Ba4 d5 23.Be3 d4 24.Bd2 Ra8 25.Bc2 Ra1 26.Bb3 c6 27.bc6 Qc6 28.c5 bc5 29.Qd1 Qb5 30.Qc2 Nd7 31.Qb2 Ra8 32.Bf7! Kf7 33.Qb5 Rb8 34.Qd7 Rb6 35.Qd5 Re6 36.Na3 h6 37.Nc4 Kf6 38.Qd7 Ra6 39.Qf5# 1–0. stoker – Webby, Live Game Caissa's Web, 2005.

4.Nc3 Nf6 5.d3 (5.e3 Nbd7 6.Nf3 (6.Be2 Be7 7.Nf3 0–0 8.0–0 d5 9.Bd3 Bd3 10.cd3 a6 11.a4; 6.Bc4 Nc5 7.d4 ed4 8.Qd4 Be7 9.Nf3 Bc2 10.Rc1 Bf5 11.0–0) 6...Be7 7.Bc4 0–0 8.0–0 Nb6 9.Bd3 Bd3 10.cd3 a6 11.a4; 5.Nf3 Nbd7 6.e3 (6.h3 Be7 7.g4 Be6 8.Ng5 0–0 9.Bg2 Nc5 10.0–0 Bd7 11.d4) 6...d5 7.Bd3 Bd3 8.cd3 Bd6 9.0–0 0–0 10.Qc2 Rc8 11.h3) 5...Qc8 (5...Bg4 6.Nf3+= (6.h3 Be6 7.Nf3 Nbd7 8.d4 ed4 9.Nd4 d5 10.e3 Bd6 11.Be2) 6...a6 7.h3 Bf3 8.gf3 Nbd7 9.Rg1 ab5 10.Nb5 c6 11.Nc3; 5...d5 6.Nf3 (6.d4 Bb4 7.Nf3 Ne4 8.Qd3 0–0 9.de5 Ng3 10.e4 Be4 11.hg3) 6...Nbd7 7.e3 Bd6 8.Be2 0–0 9.0–0 a6 10.h3 Qe7 11.a3; 5...a6 6.e4 (6.Nf3 ab5 7.Nb5 Be7 8.e4 Bd7 9.d4 ed4 10.Bd3 c5 11.0–0; 6.a4 d5 7.e4 Be6 8.Nd5 Nd5 9.ed5 Qd5 10.Nf3 Nd7 11.Ng5) 6...Be6 7.Nf3 ab5 8.Nb5 Nc6 9.Be2 Be7 10.0–0 0–0 11.Qd2) 6.e4= (6.Nf3 Nbd7 7.e4 Bg6 8.Be2 Be7 9.0–0 a6 10.a4 0–0 11.Nh4) 6...Bg4 (6...Be6 7.Nf3 Nbd7 8.d4 Be7 9.Be2 0–0 10.0–0 h6 11.d5) 7.Be2 Be6 (7...Be2 8.Qe2 a6 9.Nf3 ab5 10.Nb5 c6 11.Nc3) 8.a4 (8.Nf3 Be7 9.0–0 Nbd7 10.Ng5 0–0 11.d4) 8...Be7 (8...Nbd7 9.Nf3 Be7 10.d4 0–0 11.0–0) 9.Nf3 c6 (9...Nbd7 10.d4 0–0 11.0–0) 10.d4 (10.0–0 0–0 11.Ng5) 10...c5 (10...Nbd7!?+= 11.0–0; 10...0–0 11.0–0) 11.de5+/– de5 12.Ne5 0–0 13.0–0 Rd8 14.Qc1 Qc7 15.Nc4 Bc4 (15...Rd4!? 16.Nd2 Bd6+/–) 16.Bc4+/– Bd6 (16...Nbd7 17.Qg5 Ne5 18.Nd5 Nd5 19.Qg3+/–) 17.g3 (17.f4 Be7+–) 17...Qd7 (17...Nbd7 18.f4 Nb6 19.Be2+–) 18.Bd5 (18.Nd5!? Nd5 19.Qg5 Bf8+–) 18...Qh3 19.f3 (19.Qd2 Be5 20.Rab1 Bd4+/–) 19...c4 (19...Bg3 20.hg3 Qg3 21.Kh1 Qh3 22.Kg1 Qg3 23.Kh1 Qh3 24.Kg1 Qg3=) 20.Ne2 (20.Rd1!? Bg3 21.Qd2+= (21.Bb7?? Qh2 22.Kf1 Qf2; 21.Bc4?? Qh2 22.Kf1 Qf2)) 20...Bc5 21.Bd4 (21.Kh1!? Nd5 22.ed5+=) 21...Bd4= 22.Nd4 Nd5 23.ed5 Rd5 24.c3 Rh5 25.Qc2 Nd7 26.Qg2 Qg2 27.Kg2 Nf6 28.Rfe1 Nd5 29.g4 Rh6 30.Rac1 Nf4–/+ 31.Kg3 Nd3 32.g5 Rg6 33.h4 Nc1 34.Rc1 h6 35.f4 Rd6 36.Re1 a6 37.Re7 ab5 38.ab5 h5 39.Rb7 Re8 40.Kf3+= Re1 41.b6 Rb1 0–1. Kopec,Jerzy – Lewandowski,Alan, Turniej Szachowy Cztery Pory Roku Poland, 2010.

4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Bf5 4.b5).

4.d3 Qd7 5.e4 Be6 6.a4 c6 7.d4 ed4 8.Bd4 c5 9.Bb2 Nf6 10.Nc3 b6 11.Be2+/– d5 12.ed5+– Nd5 13.Nf3?? Nc3+= 14.Bc3 Qd1 15.Rd1 Nd7 16.0–0 0–0–0 17.Ne5 Ne5+= 18.Be5 f6 19.Rd8 Kd8 20.Bb8 (20.Bb8 Kc8 21.Bf4= (< 21.Ba7 Kb7–/+)). mic (2115) – vainessa, net–chess.com, 2008.

4.d3 Be7 5.g3 Nf6=+ 6.Bg2 Ng4?? 7.Bb7+– Nd7 8.Ba8 Qa8 9.Nf3 Ngf6 10.Nbd2 Bh3 11.e4 a6 12.ba6 Qa7 13.Ng5 Ng4?? 14.Nh3 h5 15.0–0 Rh6 16.Nf3 Rf6 17.Nhg5 Rh6 18.h3 Ngf6 19.Bc1 Nh7 20.h4 Ng5 21.hg5 Rg6 22.Be3 Qa6 23.Nh4 Re6 24.Qh5 Bf8 25.f4 ef4 26.Rf4 Kd8 27.Rf7 d5 28.Ng6! Rg6 29.Qg4 Qc6 30.Raf1 Ba3 31.ed5 Qd5 32.Qh5 Re6 33.Qh8 Re8 34.Qg7 Re3+/– 35.Qh8 Re8+= 36.Qc3?? Bc5–/+ (36...Bc5 37.R1f2 Bf2 38.Rf2 Qg5–+) 0–1. mic (2115) – mi (2085), net–chess.com, 2008.

4.d4 ed4 5.Nf3 d5 6.Nd4 Be4 =.

4.e3 c6 5.Nf3 g6 6.a4 b6 7.Be2 a5 8.ba6 Na6= 9.0–0 Nb4 10.d3+= e4?? 11.Nd4 ed3 12.cd3 Nd3?? 13.Bd3+– Qg5 14.Nf5 Nh6 15.Nh6 Qh6 16.Nd2 Bg7 17.Bg7 Qg7 18.Qg4 b5 19.Qe4 Qe5 20.Qe5 Kf8 21.Qh8 Ke7 22.Qa8 Kf6 23.Qe8 (23.Qe8 c5 24.ab5 Kg5 25.Ne4 Kh6 26.Qf8 Kh5 27.Be2 Kh4 28.Qh6; 23.Qh8 Ke6 24.Ne4 Kd7 25.ab5 c5 26.Ra7 Ke6 27.Qf6 Kd5 28.Qd6) 1–0. tanto (1730) – boysie, net–chess.com, 2002.

4.e3 Nd7 5.Be2 Be7 6.Nf3 Nh6 7.d3 Nc5 8.e4 Bg4 9.0–0 Qd7 10.a4 f5 11.Nbd2 f4 12.h3 Bh5? 13.Nh2?? Be2 14.Qe2 0–0–0 15.Ndf3 g5 16.Ne1 Rdg8 17.d4+– ed4 18.Bd4 g4 19.Bh8 gh3? 20.g4 fg3 21.fg3 Rg3? 22.Kh1+– Ng4 23.Qg4?? Rg4–+ 24.Ng4 Qg4 25.Rf2 Ne4 26.Rh2 Ng3 27.Kg1 Ne2 28.Kf2 1–0. OPA – karpov, Live Game Caissa's Web, 2004.

4.e3 Be7 5.Nf3 Nf6 6.Be2 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 Be7 5.Be2 Bf5 6.Nf3).

4.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 Bf5).

3.b5 Nf6

4.a4 b6 5.e3 Bb7 6.Nf3 Be7 7.Bc4 0–0 8.0–0 h6 9.Be2 Nbd7 10.Nh4 Ne4 (11.Nf5 c6=; 10...a6 11.f4=). LaZZZZZZZZZZzzy – airwaves, Live Game Caissa's Web, 2004.

4.Nc3 c5 5.e4 Be7 6.Nf3 0–0 7.Bc4 (7.Bd3 Nbd7=) 7...Nbd7= 8.0–0 Nb6 9.d3 (9.Be2 Be6=) 9...h6 (9...Nc4!? 10.dc4 Be6=) 10.Bb3+= Nh7 (10...a6 11.ba6 Ra6 12.a4=) 11.a4+/– Bg4 12.a5 Nd7 13.h3 Bh5 14.g4 Bg6 15.Nd5 (15.a6 b6+/–) 15...Ng5 16.Ne7 Qe7 17.Ng5 Qg5 18.f4 ef4 19.Qd2 Qh4 20.Qf4 Ne5 21.Bd5 Rab8 22.Be5 de5 23.Qe5 Qh3 24.Qf4 Qh4 (24...h5 25.gh5 Bh5 26.b6+/–) 25.b6 a6 26.Rf2 Kh7 27.Raf1 Qe7 (27...Rfe8!?+/–) 28.Qc7+– Qc7? (better is 28...Rfe8+–) 29.bc7 Rbc8 30.Bf7 Bf7 (30...Rh8 31.Bg6 Kg6 32.Rf7+–) 31.Rf7 Rf7 32.Rf7 Kg6 33.Rd7 Kf6 34.c3 g6 (34...c4 35.d4 Ke6 36.Rg7+–) 35.d4 Ke6 36.Rg7 Kf6 (36...cd4 37.cd4 Kd6+–) 37.d5 Ke5 38.c4 (better is 38.Rd7 Ke4 39.d6+–) 38...g5 (38...h5 39.Rd7 hg4+–) 39.Rd7 Kf6 40.d6 1–0. Straka,Jozef – Boldocki,Mirko, 23. Slovakia Championship Preliminary, 2009.

4.Nc3 c6 5.Qc1 Be7 6.e3 0–0 7.Be2 Bd7 8.Nf3 h6 9.0–0 a6 10.ba6 Na6=+ 11.h3 e4 12.Nd4= Qc8 13.Kh2 d5=+ 14.d3 Bc5 15.Nb3 Bd6 16.g3? ed3 17.Bd3 Nb4 18.Be2 Bh3 19.Rg1 Bf5 20.a3 Nc2 21.Ra2 c5 22.Qd2 c4 23.Nd4 Nd4 24.Qd4 Be6 25.Nb5 Bc5 26.Qf4 Be7 27.Nd4 g5 28.Qe5 Re8 29.Ne6 Qe6 (29...fe6?! 30.f4 g4 31.Kg2–/+) 0–1. mic (2185) – deafchess (2105), net–chess.com, 2009.

4.Nc3 Nbd7 5.Nf3 Be7 6.e3 0–0 7.Be2 Nb6 8.0–0= Nbd5 9.Nd5 Nd5 10.c4 Nf6 11.Qc2 b6 12.Ng5+= Bb7 13.f4 e4 14.Bf3 h6 15.Ne4 Ne4 16.Be4 Be4 17.Qe4 Bf6 18.Bf6 Qf6 19.a4 Rfe8 20.Qc6 Qe7 21.a5+– ba5 22.Ra5 Qd8 23.Rfa1 g5?! 24.fg5 hg5 25.Ra7 Ra7 26.Ra7 Kf8 27.b6 cb6 28.Qf3 (28.Qf3 Re7 29.Ra8 Qa8 30.Qa8 Kg7 31.Qd8+–) 1–0. ilmarinens (2280) – mariusch (1800), net–chess.com, 2006.

4.Nc3 Be6 5.g3 Be7 6.Bg2 c6 7.a4 a5 8.e3 Nbd7 9.bc6 bc6 10.Bc6 Rb8 11.Bb5 0–0 12.Nge2 Qb6 13.d3 Rfc8 14.Rc1 Rc7 15.Nb1 Nc5 16.c4 Bf5 17.e4?? (17.Rc3 Qb7 18.Rg1 d5+=) 17...Bd7?? (better is 17...Nd3 18.Qd3 Be4–+) 18.Na3 Kf8 19.0–0 Kg8 20.f4 Nce4+= 21.Kg2? Nc5 22.fe5 de5 23.Be5+= (23.Be5 Qb7 24.Rf3+=) 1–0. Jokmin,Alex – Bearce,Harold, SN–2010–0–00265, 2010.

4.Nc3 Be7 5.e4 Nbd7 6.Bc4 0–0 7.Nf3 c6 8.0–0 cb5 9.Bb5 Nc5 10.Qe2 a6=+ 11.Bc4 b5 12.Bb3 Bb7 13.d3 Nb3 14.ab3= Qb6 15.Nd1 Nd7 16.Ne3 Bf6 17.Nd2 Bg5 18.Nf5 Bd2 19.Qd2 d5 20.Ba3 Nc5? 21.Qc3+– Ne6 22.Ne7 Kh8 23.Nd5 b4? 24.Nb4 (24.Nb4 Nd4 25.Qd2+–) 1–0. Anna_Goldberg (1700) – Istvanny, internet, 2007.

4.Nc3 g6 5.e4= Bg7 6.a4 0–0 7.h3 Be6 8.Nf3= h6 9.Be2 Nbd7 10.0–0 Nh7 11.Rb1 f5 12.d3 f4 13.Ba3 g5 14.Nh2 Nhf6= 15.Bf3 h5 16.Bh5+/– Nh5 17.Qh5 Bf7 18.Qd1 Nf6+/– 19.Ne2 Bh5 20.f3 Bf7 21.c4 Be6 22.Qc2 Qd7 23.Ng4 Ng4 24.hg4 Kf7 25.Kf2 Rh8+= 26.Rh1 Bf6 ˝–˝. mic (2120) – gtan (2270), net–chess.com, 2008.

4.d3 c6 5.bc6 Nc6 6.c3 Be7 7.Nf3 Bg4 8.Qa4 Bf3 9.ef3 0–0 10.Be2 Nh5 11.Nd2 Bg5 12.Ne4 Nf4 13.Ng5 Qg5–+ 14.Rg1 Ne2 15.Ke2 f5 16.Bc1 Qf6 17.g3 e4 18.fe4 Qc3 19.Bd2 Qf6 20.Qc4 Kh8 21.Bc3 Qe7 22.Rge1 fe4 23.Kf1 Qg5 24.de4=+ Rae8 25.Kg2 Ne5 26.Qd5 Rf6 27.Bd2 Qg6 28.Re2?? Ng4?? 29.Rf1 Re5 30.Qb7+/– h6? 31.Bc3 Rh5 32.h3 Ne3?? 33.Re3 Rh3 34.Kh3 Qh5 35.Kg2 Rg6 36.Rf3 (36...Kh7 37.Rf8+–) 1–0. pinecrest1981 – FREEDOM4FISCHER, Caissa's Web, 2004.

4.d3 Bd7 5.c4 c6 6.a4 Be7 7.Nf3 a5 (7...0–0 8.e3+=) 8.g3= Qc7 9.Nbd2 h6 10.Bg2 Be6 11.0–0 0–0 12.e4 Nh7 13.d4 ed4 14.Bd4 c5 15.Bb2 Nd7 16.Ne1 Ne5 17.Rc1 Ng4 18.Qb3 b6 19.f3 Ngf6 20.f4 Rad8 21.f5 Bc8 22.Nd3 Ng4 23.Nf4 Bg5 24.Nd5 Qb8 25.Rcd1 Rfe8 26.h3 Ne5 27.h4 (27.Nf3 Nf3 28.Qf3 Bb7+=) 27...Bd2 28.Rd2 Qa7 (28...Bb7 29.Nb6 Be4 30.Be4 Qb6 31.Bg2+=) 29.Be5 Re5 30.Rfd1 Qb8 31.Qf3 f6? 32.Qh5 Nf8 33.g4 Bd7? 34.g5 Be8+/– 35.Qg4 fg5 36.hg5 h5 37.Qg3+– Bf7? 38.Nf6! Kh8 39.Bf1 Re7?? 40.Nh5! Bh5 41.Qh4 Kg8 42.Qh5 Re4? 43.Rh2 Qc7 44.g6 Ng6 45.fg6 Kf8 46.Qf5 Kg8 47.Qe4 Qd7 48.Qd5 (48.Qd5 Qe6 49.Qe6 Kf8 50.Rh8) 1–0. Mansor,Tarek – Weis,Reymund, Baden–ch op U1600, 2009.

4.d3 Be7 5.e4 0–0 6.h3 b6 7.Nf3 a6 8.ba6 Na6 9.Ba3 Nc5 10.Be2 Be6 11.Bc5 bc5 12.Nc3 Nd7 13.0–0 Bf6 14.Nh2 c6 15.Bg4= d5 16.Be6 fe6 17.Ng4 de4 18.Ne4+/– Qb6 19.Rb1 Qc7 20.Ra1 Rab8 21.c4 Rb2+/– 22.a4 Qa5 23.Rb1 Rb1= 24.Qb1 Rb8 25.Ngf6 Nf6?? 26.Qb8+– (26.Qb8 Kf7 27.Qb7 Kg6 28.Qc6 Ne4 29.Qe4 Kf7 30.Rb1+–) 1–0. pinecrest1981 – ummagumma, Live Game Caissa's Web, 2006.

4.d4 a6 5.de5 de5 6.Qd8 Kd8 7.ba6 Bd6 8.Nc3 Na6= 9.Rd1 Bd7 10.e4 Kc8 11.Nf3 Nb4 12.Rc1 Na2 13.Ra1 Bb4 14.Ne5?? Be6 15.Nd3 Bc3?? 16.Bc3+= Kb8 17.Bf6 gf6 18.Kd2 Rd8 19.Be2 Nb4 20.Ra8+/– Ka8 21.Ra1 Kb8 22.Kc3 Nc6 23.h3 f5 24.e5 Rd5 25.Bf3 Rd7 26.Bc6 bc6 27.Ra4 Bd5 28.Rh4 Bg2 29.Rh7 Be4? 30.e6! Rd8 31.Rf7 Bd5 32.e7 Re8 33.Rf8 Rf8 34.ef8Q Kb7 35.Nc5 Kb6 36.Qb8 Kc5 37.Qb4# 1–0. marekt – mike_bychkov, Yahoo, 2005.

4.d4 Bd7 5.de5 de5 6.Be5 Be7 7.c4 0–0 8.Nf3 c6 9.e3 cb5 10.cb5 Qa5 11.Qd2 Bb4 12.Bc3 Bc3 13.Nc3 Bg4 14.Ne4 Qd2 15.Nfd2 Nbd7 16.Nd6 b6 17.h3 Be6 18.Bc4 Nc5 19.Be6 Ne6 20.N2c4 Nd7 21.a4 Nec5 22.Ke2 Nf6 23.a5 Nd5 24.e4 Nc3 25.Ke3 Rab8 26.ab6 ab6 27.g4 Rfd8 28.Ra3 N3a4 29.e5 Rd7 30.Rha1 Re7 31.Ra4 Na4 32.Ra4 f6 33.Ke4 fe5 34.Nb6 h6 35.Nbc4 Re6 36.Ra2 Rd8 37.b6 Rdd6 38.Nd6 Rd6 39.Ra8 Kf7 40.b7 (40.b7 Rd4 41.Ke5+–) 1–0. pierre (1705) – ismaelarango, internet, 2005.

4.d4 e4 5.c4 Ng4 6.e3 Qh4 7.g3 Qf6 8.Qc2 Bf5 9.h3 Qh6 10.Bg2 Ne3 11.fe3+– Qe3 12.Ne2 c6 13.Bc1 Qd3 14.Qd3 ed3 15.Nec3 Be7 16.0–0 Bg6 17.Re1 f6 18.Bf4 Kd7 19.Nd2 Bf7 20.Rab1 Re8 21.bc6 bc6 22.Rb7 Kd8 23.c5! Bf8 24.Reb1 Nd7 25.Bc6 Be6 26.Rd7! (26.Rd7 Bd7 27.Ba8 dc5 28.Rb8 Bc8 29.d5+–) 1–0. Diener,Rudolf – Nunez Casado,Franco, corr ICCF T–625–19, 1975.

4.Nf3 a6 5.e3 =+.

4.Nf3 b6 5.e3 Bb7 6.d4 ed4 7.Bd4 Be7 8.Be2 0–0 9.Bb2 Nd5 10.c4 Nf6 11.0–0 Nbd7 12.Nbd2 Nc5 13.Qc2 Nce4 14.Ne4 Be4 15.Qc3 Bg6 16.Nh4 Ne4?? 17.Qg7 1–0. stoker – DKPs, Live Game Caissa's Web, 2004.

4.Nf3 Be6 5.Nc3 Be7 6.e4 0–0 7.d4 Bg4 8.de5+= de5 9.Qd8+/– Rd8 10.Ne5 Bb4 11.f3 Bh5 12.g4+– Bg6 13.Rd1 Rd1 14.Kd1 c6 15.g5 Nh5 16.a4 Nf4 17.Ne2+– Ne6 18.h4 h6 19.gh6 gh6 20.h5 Bh7 21.Ng4 Bf8 22.Nf6 Kg7 23.Rg1 Bg6 24.hg6 fg6 25.Bh3 Ng5 26.Rg5! hg5 27.Ne8 Kf7 28.Nc7 Nd7 29.Na8 Ne5 30.Be5 cb5 31.ab5 Be7 32.Bc8 b6 33.Nc7 Bc5 34.Be6 Kf8 35.Nc3 Bb4 36.N3d5 Bc5 37.f4 gf4 38.Nf4 Ke7 39.Ng6 Kd8 0–1. themonkey (2125) – NN, GameColony.com, 2002.

4.Nf3 Bf5 5.e3 c6 6.a4 c5 7.c4 g6 8.Be2 Bg7 9.0–0 Nbd7 10.d4 e4 11.Nh4 h5 12.Nf5+/– gf5 13.Nd2 cd4 14.ed4 Ng4 15.Re1 Qh4= 16.Bg4 hg4 17.h3?? gh3–+ 18.g3 h2 19.Kh1–/+ (19.Kh1 Qh3 20.f3–/+). pumpkin (2485) – segovia (1800), net–chess.com, 2004.

4.Nf3 g6 5.e3 Bg7 6.d4 e4 7.Nfd2 0–0 8.c4 Qe7 9.Nc3 c6 (9...c5 10.dc5 dc5 11.Be2=) 10.a4 Bf5 (10...c5 11.dc5 dc5 12.Qc2=) 11.Be2+= g5 (11...h5 12.h3+=) 12.h3 Bg6 13.0–0 Ne8 (13...Nbd7 14.a5 a6 15.Qc2+=) 14.Bh5 (14.Qc2+/–) 14...Bh5 (better is 14...Nf6!? 15.Bg6 hg6+=) 15.Qh5+– f5 16.Qe2 ˝–˝. Florea,Dorina (1830) – Lolici,Iselin_Amanda (1945), Calimanesti ROM, Team Ch (w), 2014.

4.Nf3 h6 5.e3= Be7 6.Bc4 Be6 7.Be6 fe6 8.0–0 Qd7 9.c4 d5?? 10.Ne5+– Qd6? 11.Ng6 Rg8 12.Ba3 (12.Ba3 Qd8 13.Ne7+–; 12.Ne7?! Qe7 13.cd5 ed5+–) 1–0. Wall,Bill – Guest785, internet, 2002.

4.g3 (--> 3.g3 Nf6 4.b5).

4.h3 Bd7 5.a4 a6 6.c4 Be7 7.e3 c6 8.Nc3 0–0 9.d3 ab5 10.ab5 Ra1 11.Qa1 cb5 12.cb5 Qb6 13.Qa4 Na6 14.d4 Ra8 15.Qb3 Nc7 16.d5 Qa5 17.b6? (better is 17.Kd1–/+) 17...Ncd5–+ 18.Bc4 Be6 (18...Nb6?! 19.Bf1–+) 19.Nge2 Nc3 20.Bc3 Bc4 21.Qc4 Qb6 22.0–0 Qa6 23.Qa6 ba6 24.Rb1 a5 25.Nc1 h6 26.Ra1 a4 27.Bb4 Nd5 28.Ba3 Nb6 29.Nd3 e4 30.Ne5 de5 31.Be7 Nc4 32.Ba3 Na3 33.Ra3 f5 34.Kf1 Kf7 35.Ke1 Ke6 36.Kd2 Kd5 37.Kc3 Kc5 38.Ra1 g5 39.g3 h5 40.Ra3 f4 41.Ra2 Ra6 42.Ra3 Kb5 43.Ra2 Rd6 44.Rb2 Kc5 45.Kc2 Kc4 46.Ra2 Ra6 47.Ra3 Kb4 48.Kb2 Rd6 49.Ra1 Rd2 50.Kb1 Rf2 51.gf4 ef4 52.ef4 gf4 (52...gf4 53.Kc1 Rf1 54.Kc2 Ra1 55.Kd2 a3 56.Kc2 Rh1 57.h4 a2 58.Kb2 a1Q 59.Kc2 Qc3) 0–1. Kopec,Jerzy – Herman,Monika (1720), Warszawa ch41 opB Poland, 2008.

4.h3 Be7 5.g4 Bd7 6.Bg2= c6 7.g5 Ng8 8.h4 f6 9.gf6 Nf6 10.h5 a6 11.bc6 bc6 12.h6 g6 13.e4 Bf8 14.d4= Qe7 15.d5 c5 16.Nh3 Bh6=+ 17.Bc1 Bc1 18.Qc1 Bh3 19.Bh3 Nh5 20.Bg4 Nf4–/+ 21.Bf3 Qg5 22.Nd2 Nd7 23.Qb2 Rb8 24.Qa3 Rb6?? 25.Nc4+= Rb8 26.Nd6 Ke7 27.Nc4 Qf6 28.d6 1–0. pinecrest1981 – Blacknight, Live Game Caissa's Web, 2004.

4.a4 a5

5.c4 Nbd7 6.d4 d5 7.c5? (7.de5 Bb4 8.Bc3 Ne5 9.Bb4 ab4 10.cd5 Qd5 11.Qd5 Nd5 12.e4+=) 7...ed4–/+ 8.c6 Bb4 9.Nd2 bc6 10.bc6 (better is 10.Bd4 c5 11.Be3–+) 10...Ne5 11.Ba3 Bc3 (worse is 11...Nc6 12.Bb4 ab4 13.Qc2–+) 12.Ra2 Ne4 13.Bc1 Nc6 14.Ngf3 Nb4 15.Ra3 Bf5 16.e3 Nd2 17.Bd2 (17.Bb5 c6 18.Bc6 Nc6 19.Bd2–+) 17...Nc2 18.Qc2 Bc2 19.Bb5 Kf8 20.Bc3 dc3 21.Rc3 Be4 0–1. Basso,Oscar – Toro Solis de Ovando,Guillermo F, Latin Am zt3 corr, 1970.

5.d3 Be6 6.Nf3 +=.

5.d3 g6 6.g3 (6.Nf3 Be7=) 6...Bg7 7.Bg2 0–0 8.Nf3 c6 (8...Nbd7 9.0–0=) 9.c4 (9.0–0 Be6=) 9...Bg4 (9...cb5 10.ab5 Bg4 11.0–0+=) 10.h3 Bd7 (10...Be6 11.0–0=) 11.0–0 Nh5 (11...Re8 12.d4 e4 13.Nfd2=) 12.e4 (12.Nc3 Qf6+=) 12...c5 13.Nc3 Be6 14.Bc1 h6 (14...Nf6 15.Bg5+=) 15.Bd2 (15.Rb1 Qd7=) 15...Kh7 (15...Nf6 16.Nd5=) 16.Rb1 Nd7 17.Nd5 Nb6 (17...Nhf6 18.Qc2+=) 18.Nb6 (18.Qe1 Bd5 19.cd5 Na4+=) 18...Qb6= 19.Nh4 Bf6 (19...Nf6 20.Qe2=) 20.Nf5+= White fights for the Initiative 20...Nf4 (20...Bf5 21.ef5 Rae8 22.Qg4+/–) 21.gf4= (worse is 21.Bf4 ef4 22.Nh4 fg3 23.fg3 Bh4 24.gh4 f5=) 21...gf5 22.Qh5 Rg8?? (better is 22...Bg7+=) 23.ef5+– Rg7 (23...Bd7 24.Qf7 Rg7 25.Qf6+–) 24.fe6 e4 (24...ef4 25.Bf4 Rg6 26.Kh1+–) 25.Kh1 d5 26.Qf5 Rg6 27.cd5 (27.cd5 ed3 28.Be4+–) 1–0. Valenta,Vit – Docekal,Jan, Liberec op, 2003.

5.d4 Nbd7 +=.

5.e3 Be7 6.d3 0–0 (6...Be6 7.Be2=) 7.Be2 Be6 (7...Qd7 8.Nf3=) 8.Nf3= Nbd7 (8...Qd7 9.0–0=) 9.0–0 c6 10.Na3 h6 (10...Nb6 11.c4=) 11.c4 Rc8 (11...Qc7 12.d4=) 12.h3 (12.Bc3 Qc7=) 12...Re8 13.Qc2 Bf5 14.e4 Bg6 15.Nh4 (15.bc6 bc6 16.Bc3 d5 17.Ne5 Ne5 18.Be5 Ba3 19.Bf6 Qf6 (worse is 19...gf6 20.Ra3 Qe7 21.Qc1+/–) 20.Ra3 de4 21.de4 Be4+=) 15...Bh7+= 16.Nf5 Bf5 17.ef5 d5 18.Bf3 cb5 19.ab5 e4 (19...Qb6 20.Bc3+=) 20.de4 de4 21.Be4?? (better is 21.Be2+=) 21...Ne4–+ 22.Rfe1 Ndf6 23.Bf6 (23.Re2 Bc5 24.Rd1 Qb6 25.Bf6 Nf6–+ (25...gf6?! 26.Re4 Ba3 27.Qe2 Re4 28.Qe4–+; 25...Qf6?! 26.Re4 Ba3 27.Qe2–+; 25...Ba3?! 26.Bd4 Nc5 27.Re8 Re8 28.Bg7–+)) 23...Nf6 24.Rad1 (24.Red1 Qc7–+) 24...Qb6 (24...Ba3?! 25.Rd8 Red8 26.Rd1–+) 25.Re3 Bc5 26.Red3 (26.Rf3 Re4–+) 26...Ne4 27.Rf3 Rcd8 28.Rd8 Qd8 (28...Rd8?! 29.Qe4 Rd1 30.Kh2 Qd6 31.g3 Ba3 32.f6–/+) 29.Nb1 (29.g3 Ng5 30.Rb3–+) 29...Nf2 30.Kf1 Ng4! (30...Ng4 31.hg4 Qh4 32.Qe4 Re4 33.Re3 Re3 34.g3 Qh1 35.Kf2 Re1) 0–1. Drexhage,Ulrich – Freytag,Walter, desc–online.de, 2003.

5.e3 Be7 6.Nf3 0–0 7.Be2 Nbd7 8.c4 c5 9.d4 e4 (9...cd4 10.ed4 e4 11.Nfd2=) 10.Nfd2 Re8 11.0–0 Nf8 12.f3 ef3 13.Rf3 d5 14.dc5 Bc5 15.Bf6 gf6 16.Kh1 Be3 17.Qe1 (17.Nf1!? Bg5 18.Rg3=) 17...Ng6 18.Nc3 d4 (18...Bd4 19.Nb3 (19.cd5? Bg4 20.Rc1 Bf3 21.Nf3 Bc3 22.Rc3 Qd5–+) 19...Bc3 20.Rc3+=) 19.Nd5= The isolani on f6 becomes a target 19...Re6 (19...Bg5 20.Qd1=) 20.Ne4 (20.Ne3 Re3 21.Re3 de3+/–) 20...Bg5 21.Ng5 fg5 22.Qf2 b6 (22...Re2 23.Qe2 Bg4 24.Rd1+/–) 23.Qd4 (23.Rd1!?+/–) 23...Bb7+= 24.Nf6 (24.Bd3 Nf4+/–) 24...Kf8= 25.Nh7 Ke7 (25...Kg8 26.Nf6 Kf8 27.Nd7 Ke7 28.Qd2+=) 26.Qg7 The backward pawn on f7 becomes a target 26...Bf3= 27.Bf3 Qh8 28.Qh8 Rh8 29.Ng5 Rd6 30.Re1 Kf8 31.Bd5 Rf6 32.h3 Nf4 33.Bf7 Rf7 34.Nf7 Kf7 35.Rf1 Rh4 36.g3?? Rh3–+ 37.Kg1 Rg3 38.Kh2 Rg4 39.c5 bc5 40.b6 Ke6 41.b7 Rg2 42.Kh1 Rb2 43.Rf4 Rb7 44.Rf2 Rg7 45.Rc2 Kd5 46.Rb2 Kd4 47.Rb5 c4 48.Ra5 c3 49.Ra8 Kd3 50.Rd8 Kc2 51.a5 Kb2?? 52.Rb8–/+ Kc1 53.a6 c2 54.Rb7 Rg6 55.a7+= Ra6 56.Kg2 Kd2 57.Rd7 Ke3 58.Re7 Kd4 59.Rd7 Ke3 60.Rc7 Kd2 61.Rd7 Kc1 62.Kf2 Ra2 63.Ke3 Kb2 64.Rb7 Kc3 65.Rc7 Kb3 66.Rb7 Kc4 67.Rc7 Kb5 68.Rc2 Ra7 ˝–˝. Felicione,Anthony (2095) – Lee,Richard (1915), Internet Section, 2004.

5.e3 Be7 6.Nf3 0–0 7.Be2 e4 8.Nd4 c5 =.

5.e3 Be7 6.Nf3 c5 +=.

5.e3 g6 6.c4 Bg7 7.Ne2 Be6 8.Qc2 Nbd7 9.Ng3 h5 10.d4 h4 11.Ne4 Ne4 12.Qe4 Bf5 13.Qf3 ed4 14.Bd4 Bd4 15.ed4 Qf6 16.Qe3 Kf8 17.Be2 Re8 18.Qd2 Nc5 19.dc5 Qa1 20.0–0 Bb1 21.cd6 (21.Bd3 Qd4 (21...Qa4?! 22.Qc3 Rh5 23.Rb1 Rc5 24.Qh8 Ke7 25.Qh4 Kd7 26.Qf6–/+) 22.Rb1 h3–+) 21...cd6 (better is 21...Qa2!? 22.Qa2 Ba2 23.dc7–+) 22.Bd3 Qd4 23.Rb1 Kg7 24.Rd1 h3 25.g3 b6 26.Qc2 Re5 27.Bf1 Qe4 28.Qc3 Rd8 29.Bh3 Kg8 30.Bg2 Qe2?? (better is 30...Qf5=) 31.Bf3+– Qa2 32.Ra1 (32.Ra1 Qa1 33.Qa1+–) 1–0. Althoff,Guntram (2185) – Grodotzki,Thomas, Ruhrgebiet VK3, 1999.

5.e3 g6 6.Be2 Bg7 7.Nf3 0–0 8.0–0 e4 9.Nd4 c5 10.Nb3 Be6 11.c4 Nbd7 12.Qc2 Nb6 13.d3 ed3 14.Bd3 Qe7 15.N1d2 Nfd7 (15...Rfe8 16.Bc3+=) 16.Bg7 Kg7 17.Qc3 (17.Na5 Ne5 18.Qc3 f6+/–) 17...f6 (17...Qf6 18.Qf6 Nf6 19.Rfd1+=) 18.Na5+/– Ne5 19.Be4 Ra7 20.f4 Ng4 21.Nab3 Na4 22.Qd3 Rfa8 23.Qe2 (23.Rfd1 Nb2 24.Qc3 Nd1 25.Rd1 Bc4 26.Qc4 Ne3–+) 23...Nc3 24.Qf3 (24.Qd3 Na4=) 24...Ra1 (better is 24...Bc4!? 25.Ra7 Ra7 26.Nc4 Qe4 27.Nd6 Qf3 (27...Qe3?! 28.Qe3 Ne3 29.Re1=) 28.Rf3 Ra3–/+) 25.Ra1= (25.Na1 Bc4 26.Bb7 Be2 27.Ba8 Bf3 28.Nf3 Ne2 29.Kh1 Qa7–+ (worse is 29...Ne3 30.Re1 Nf4 31.g3–+; worse is 29...Qe3 30.g3–+)) 25...Ra1 26.Na1 Ne4 27.Qe4= f5 28.Qd3 Qh4 29.Nf3 Qf2–+ 30.Kh1 Ne3 31.Qc3 Kh6 32.Qd2 Qf1 33.Ng1 Nc4 34.Qe2 Qe2 35.Ne2 Na5 36.Nc3 d5 37.Nb3 d4 (37...d4 38.Na5 b6–+; 37...Nb3!? 38.Kg1–+) 0–1. Pohl,M – Reimche,Vadim, Oberschwaben–chB, 1994.

5.g3 Nbd7 6.Bg2 (6.Nf3 e4 7.Nd4 d5 8.Bg2 c5+=) 6...d5 7.Nf3 Bd6 8.0–0 0–0 9.d3 Qe7 10.e3 (10.Nbd2 Re8=) 10...c5 (10...Rd8 11.Qd2+=) 11.Nbd2 b6 12.Nh4 g6 (12...Qe6 13.f4=) 13.f4 Bb7 14.Nc4 Bc7 (14...dc4!? 15.Bb7 Rab8+=) 15.fe5 Ne5 16.Nd2 (better is 16.Ne5!? Be5 17.d4 cd4 18.Ba3+=) 16...Rfe8 17.Qe2 Neg4 (17...Rad8 18.Rae1=) 18.Qf3+= Bd8 19.Rae1 Qc7 20.h3 Ne5 21.Qf4 (21.Qf2!?+=) 21...Nh5= 22.Qf2 Bh4 23.gh4 f5 24.Nf3 (24.Rd1 Rac8=) 24...Nf3+= 25.Qf3 Rab8 26.e4 de4–/+ 27.de4 Qg3 28.Qg3 Ng3 29.Rf3 Ne4 30.Rd3 Re7 31.Red1 Rbe8–+ 32.Rd7 Kf7 33.h5 g5 34.Bf1 Bc8 35.Bc4 Kf8 36.Re7 Ke7 37.Be5 Be6 38.Be6+= Ke6 39.Bc7 f4 40.Re1 Kd5+= 41.Bb6 f3 42.Rd1 Ke6 43.Bc7 (43.Bc7 g4 44.hg4–/+ (44.Ba5? g3 45.Bc7 g2–+)) +=. Lorenz,Karl – Kjellander,Jan, corr SSKK 2–767, 1993.

5.g3 Be7 6.Bg2 0–0 7.Nf3 e4 8.Nd4 c5 +=.

4.a4 a6

5.c4 Be6 6.e3 ab5 7.ab5 Ra1 8.Ba1 Nbd7 9.Nc3 Be7 10.Nf3 0–0 11.Be2 h6 (11...d5 12.cd5 Nd5 13.0–0=) 12.0–0= Re8 13.Qc2 Bf8 (13...Nb6 14.d3=) 14.d4+= ed4 15.Nd4 Ne5 16.Ne6 Re6 17.h3 Nfd7? (17...c6 18.Bb2+=) 18.Nd5 (better is 18.f4+–) 18...Nc5 19.Nf4 Re8 20.Rd1 Qd7 21.Bd4 b6 22.Nd5 Ng6 23.Bg4 Qd8 24.Bh5 Ne5 (24...Ne7 25.Ra1+/–) 25.f4+– c6 26.bc6 Nc6 27.Qf5 Qd7 28.Qd7 Nd7 29.Nb6 Nd4+/– 30.Nd7 Nf5 31.Nf8 Ne3 32.Rd6+/– ˝–˝. Szonyi,Lajos – Barsvari,Laszlo, Komarom HUN, County Team Ch, 2013.

5.d4 e4 +=.

5.e3 c5 6.Be2 (6.d4 ed4 7.ed4 d5=) 6...ab5 (6...Be7 7.d4 ed4 8.ed4=) 7.ab5 (7.Bb5 Nc6=) 7...Ra1 8.Ba1 Bf5 (8...Be7 9.d4 Nbd7 10.de5 de5 11.Nf3=) 9.c4 (9.Bb2=) 9...Bb1 (9...Be7!?+=) 10.Qb1+= Nfd7 (10...Nbd7 11.Nf3+=) 11.Nf3+/– g6 (11...Qe7 12.0–0+/–) 12.0–0 Bg7 (12...f5 13.e4+/–) 13.d4 (13.Qe4 Qc7+/–) 13...0–0 (13...f5 14.de5 de5 15.Rd1+/–) 14.de5 Ne5 (14...de5 15.Qe4 Qc7 16.Rd1+/–) 15.Rd1 Qc7 16.Ne5 Be5 17.Be5 (17.Qd3 Re8+/–) 17...de5 18.Qd3 (18.Qe4+/–) 18...b6 (better is 18...f5!?+/–) 19.Qd6+– Qa7 (19...Qd6 20.Rd6 f5 21.Rb6+–) 20.Qe5 Qa2 21.Kf1 Qa7 22.Qd6 (22.Bf3 Qa2 23.Qc3 Qa7+–) 22...Re8 23.g3 (23.Bf3 Kg7+–) 23...h5 (23...h6 24.Bf3+–) 24.g4 (24.Bf3 h4+–) 24...hg4 25.Bg4 Re4 (25...Qa4 26.Be2 Qa8 27.Rd5+–) 26.Qf6 Re8 27.Rd6 Qa2 28.Be2 Qb1 29.Kg2 Qe4 30.Qf3 Qh4 31.Rb6 Nd7 32.Rb7 Ne5 33.Qf4 Qd8 34.Bf3 Nf3 (34...Kg7+–) 1–0. Herm,Florian – Eisenhauer,Michael, Baden–ch AT1, 2003.

5.e3 Bd7 6.Nf3 ab5 7.ab5 Ra1 8.Ba1 c6 9.bc6 bc6 10.Be2 Be7 11.0–0 0–0 12.c4 Na6 13.d4 e4 14.Nfd2 Bf5 15.Bc3 Qd7 16.f4 Ra8=+ 17.Qb3 c5 18.Qd1 Nb4 19.Bb4 cb4=+ 20.Nb3 Ra7 21.N1d2 Ng4 22.Bg4 Bg4 23.Qb1 Qa4 24.Qe4+/– Qd7 25.c5 Be2 26.Ra1?? Ra1=+ 27.Na1 dc5 28.dc5?? Qd2–+ 29.Qe7 Qe1 0–1. tanto – rjamesx, net–chess.com, 2001.

5.e3 Be6 6.Nf3 +=.

5.e3 Be7 6.Nf3 0–0 7.Be2 Bg4 8.0–0 ab5 9.ab5 Nbd7 10.Ra8 Qa8 11.Nc3 Bh5 12.Qa1 Qc8 13.d3 c5 14.Nd2 Nb6 15.Bh5+= Nh5 16.Qd1 Nf6 17.e4 h6 18.Re1 Qd7 19.Nf1 d5 20.ed5+/– Nbd5 21.Nd5 Nd5 22.c4 Nf4 23.Qf3 Nd3=+ 24.Rd1 e4?? 25.Qe4+– Bd6?? 26.Qd3 Rd8 27.Qc3 Bh2 28.Kh2 Qd1 29.Qg7 1–0. tanto (1730) – jaronson (1905), net–chess.com, 2003.

4.a4 c6

5.c4 Be7 6.e3 0–0 7.Nc3 d5 8.d4 e4 9.c5 Bg4 10.f3 ef3 11.gf3 Bd7 12.Bg2 Re8 13.Qd2 Nh5 14.0–0–0 (better is 14.bc6!? Bc6 15.Nh3+=) 14...f5 15.Nge2 f4 16.ef4 Bf5 (16...b6!?+=) 17.Ng3= Ng3. Baer,Cy (1895) – Hess,Volker (1735), RSS5E NoEngine–36, 2007.

5.Nf3 Be7 6.g3 0–0 7.Bg2 a6 8.c4 Be6 9.Qc2 (9.Qb3 ab5 10.ab5 Ra1 11.Ba1 Qc8+=) 9...ab5 10.ab5 Nbd7 (10...Ra1 11.Ba1 cb5 12.cb5+=) 11.0–0 (11.Ra8 Qa8 12.Ng5 cb5 13.Ne6 fe6 14.cb5 Qa5+=) 11...cb5 (11...Ra1 12.Ba1 cb5 13.cb5–/+) 12.cb5 (12.Ra8 Qa8 13.cb5 Qa5+=) 12...Ra1 13.Ba1 Nb6 (13...Qb6 14.Nc3+=) 14.Nc3 Qd7 15.d4 ed4 16.Nd4 Bh3 17.Re1 Bg2 18.Kg2 Rc8 19.Qd3 h6 (19...d5 20.Rd1=) 20.e4 Rd8 (20...d5 21.e5 Nh7 22.f4=) 21.Qd2 (21.Nf5 Re8+/–) 21...Ng4 (better is 21...d5!? 22.e5 Ne8=) 22.Nf5+/– Nf6? (better is 22...Bf6+/–) 23.Nd5?? (better is 23.Qd4 Nc8 24.Nd5+–) 23...Nbd5= 24.Rd1?? (better is 24.ed5 Qf5 25.Re7 Nd5 26.Qd4= (26.Rb7? Qe4 27.Kg1 Ne3 28.Qe3 Qb7–+)) 24...Nb6 25.Nh4 Qe6 26.Bf6 Bf6 27.Qe3 d5 28.Nf3 de4 29.Rd8 Bd8 30.Nd4 Qe5 31.Ne2 Qb5 32.Nc3 Qc6 33.Kg1 Bg5 34.Qe1 Nc4 35.Ne4 b5 36.Ng5 hg5 37.Qb4 Ne5 38.Qa3 Qc4 39.Qb2 Nd3 40.Qe2 b4 (40...b4 41.Qe8 Kh7–+) 0–1. Acevedo,Daiana – Bascope Solis,Natalia, Pan American–ch U12 Girls, 1999.

4.a4 Nbd7

5.c4 Be7–/+ 6.e3 b6 7.Be2 Bb7 8.Nf3= 0–0 9.0–0 Re8 10.Nc3 Nf8 11.Qc2 Ng6 12.Rfd1 Bf8 13.d4 ed4 14.Nd4 Nh4 15.g3+/– Ng6 16.Bf3 Bf3 17.Nf3 Qd7 18.Kg2 Ng4 19.Qe2 Nf6 20.Nd5 Nd5 21.Rd5 Qg4 22.h3?? Nh4!!–+ 23.Kf1 Qf3 24.Qf3 Nf3 25.Kg2 Ne5 26.Rc1 Nd7 27.Bc3 a5 28.Bd4 g6 0–1. Pohl,Manfred – Mietner,Franz, Bahn–chG Fuessen, 1993.

5.e3 Be7 6.Nf3 0–0 7.Be2 c5 8.0–0 b6 9.d3 Re8 10.e4 Nf8 11.Nc3 Ng6 12.Ng5 Nf4 13.Bf3 Nd7 14.g3 Bg5 15.gf4 Bf4 16.Nd5 Qg5 17.Bg2 Qh4 18.Nf4 ef4 19.Qf3? Nf6?? 20.h3 Qg5?? 21.Bf6 Qf6? 22.Kh2?? Re5 23.Rh1 Rg5 24.Kg1?? Bb7 25.Kf1?? d5 26.Ke2?? de4 27.de4 Qb2 28.Rae1 Re5 29.Kf1 a6 30.ba6 Ba6 31.Kg1 Rae8 32.Kh2 Qc2 33.Qg4?? h6 34.Qf4 Rh5 35.Rhg1 Bc8 36.f3?? Qc3 37.Re3?? Qc2 38.Rge1?? Rh3 39.Kg1 Re6?? 40.R3e2 1–0. MammaMia – GirlPoser69, Live Game Caissa's Web, 2004.

4.a4 Be6

5.d3 g6 6.Nd2 Bg7 7.c4 0–0 8.g3 c6 9.Bg2 Qc7 10.Nh3 Nbd7 11.0–0 Ng4 12.Ng5 Rae8 13.Ne6 Re6 14.Bh3 Ndf6 15.e3 h5 16.Qe2 Ree8 17.e4 Rb8 18.Rfc1 c5 19.Bc3 Kh7 20.Rc2 Qe7 21.Nf1 Nh6 22.Ne3 Kh8 23.Rf1 Nh7 24.Nd5 Qd8 25.f4 ef4 26.Bg7 Kg7 27.gf4 Qh4 28.Qf3 Nf6 29.Rg2 Nd5 30.cd5 ˝–˝. Springer,U – Margraf, corr SOK–89–50, 1989.

5.e3 Be7 6.d4 Nbd7 7.Nd2 =+.

5.e3 g6 6.c4 Ne4 7.d3= Nc5 8.Nf3 Bg7 9.Be2 Nbd7 10.0–0 Nf6 11.e4 Ng4 12.Ng5?? Nh2 13.Ne6+– fe6 14.Kh2 Qh4 15.Kg1 d5 16.g3 Qh3 17.Bf3 de4 18.Bg2 Qf5 19.de4 Ne4 20.Nc3 Ng5? 21.Be4 Qh3?? 22.Bg2 Qf5 23.Ne4 Nf3?? 24.Qf3+– Qh5 25.Qh5 gh5 26.Ng5 (26.Ng5 Ke7 27.Bb7+–; 26.Nc5 Rb8+–) 1–0. OutOfBounce – TheSuperiorMind, Live Game Caissa's Web, 2005.

5.e3 g6 6.Be2 Bg7 7.Nf3 0–0 8.Ng5 Nbd7 9.Ne6 fe6 10.Bc4 d5 11.Be2 Ne4 12.d3?? (Better is 12.0–0=) 12...Nf2–+ 13.Qd2 Nh1 14.Ba3 Qh4 15.g3 (15.Kd1 Rf2 16.Qe1 Qh2–+) 15...Ng3! 16.hg3 (16.Kd1 Nf1 17.Qc3 Ne3 18.Kc1 Rf2–+) 16...Qg3 17.Kd1–+ Rf2 18.Nc3 Bh6 19.Kc1 Be3 20.Qe3 Qe3 21.Kb2 Re2 22.Ne2 Qe2 23.Bb4 c5 24.Ba3 a6 25.ba6 Ra6 26.d4 ed4 27.Kb3 Qc4 28.Kb2 Ra4 29.Rd1 Qc3 30.Kc1 Ra3 31.Rd3 Ra1 0–1. OPA – PrinceMyshkin, Live Game Caissa's Web, 2004.

5.Nf3 Nbd7 6.Ng5 Be7 (6...Bf5 7.e3+=) 7.Ne6= fe6 8.e3 0–0 9.Be2 d5 10.0–0 c5 11.d4 (11.a5 a6 12.b6 Qe8=) 11...cd4+= 12.ed4 e4 13.Re1 Rc8 14.Qc1 (14.Ba3 e5+=) 14...Qa5 15.Bc3? (better is 15.c3+=) 15...Rc3–+ 16.Nc3 Qc3 17.Rd1 e5 18.Qd2 (18.de5 Ne5 19.Qd2 Qd2 20.Rd2 Bc5–+) 18...ed4 19.Qc3 dc3 20.h3 Bc5 21.Bg4 Ng4 22.hg4 Bf2 23.Kh1 d4 24.g3 Ne5 25.g5 d3 26.cd3 ed3 27.Rac1 c2 28.Rd2 Be3 29.Rg2 Bc1 30.Rg1 d2 31.Rg2 d1Q 32.Rg1 Rf1 33.Kh2 Rg1 34.Kh3 Qh5 0–1. Anastasiou,Efthymios – Hliapas,Ioannis (1910), Patron CC–ch, 2008.

4.a4 Be7

5.d3 0–0 6.e4 c6 7.c4 Be6 8.Nf3 Nbd7 9.Be2 Nc5 10.0–0= a6 11.Nbd2 Qb6 12.a5+= Qd8 13.b6 Bg4 14.h3 Bh5 15.d4 ed4 16.Bd4 Nfe4=+ 17.Ne4 Ne4 18.Bb2 Bf6 19.Bf6 Qf6 20.Qd3 Nc5 21.Nd4?? Nd3–+ 22.Bh5 Qd4 23.Be2 Rae8 24.Bd3 Qd3 25.Rad1 Qc4 26.Rd6 Re7 27.Ra1 Rfe8 28.Rdd1 Re2 29.Rac1 Qf4 30.Kh1 Qf2 31.Rg1 h6 32.Rcf1–+ Qg3 33.Rf3 Qg5 34.Rff1 Rb2 35.Rd1 Ree2 36.Rd4 Rg2 37.Rg4 Rh2# 0–1. Rutz,Marco – Laake,Tamara, GER–ch U10 Ueberlingen, 2000.

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5 Be7 5.a4).

4.a4 g6

5.e3= Bg7 6.Be2 0–0 7.d3 Re8 8.e4 c6 9.Nf3= Qa5 10.Bc3 Qc7=+ 11.0–0 Nbd7 12.a5 cb5=+ 13.a6 ba6–/+ 14.Ba5 Nb6 15.c4 Bb7 16.cb5 ab5–+ 17.Nbd2 d5 18.Ng5 Rad8 19.Rc1 Qe7 20.Nb3 de4 21.Bb6 ab6 22.Qc2 ed3 23.Bd3 Nh5 24.Ne4 f5 25.Ned2 Nf4 26.Bb5 Bg2 27.Be8 Qg5 28.Qc4 Kh8 29.f3 Nh3# 0–1. OutOfBounce – manson, Live Game Caissa's Web, 2005.

5.e3 Bg7 6.Nf3 0–0 7.Be2 Bg4 8.d3 c6 9.bc6 Nc6 10.c4 Qa5 11.Bc3 Qb6 12.a5 Qc7 13.Nfd2 Be6 14.0–0 Rad8 15.Nf3 h6 16.Nbd2 a6 17.Qc2 Nh7 18.d4+= Ne7 19.d5 Bf5 20.e4 Bg4 21.h3 Bh5? 22.g4+– Bg4 23.hg4 Ng5 24.Ng5 hg5 25.f3 f6 26.Rab1 Kf7 27.Kf2 Rb8 28.Qa4 Rh8 29.Rh1?? Rh4?? 30.Rh4 gh4 31.Rh1 g5 32.Rb1 Qc5 33.Kg2?? Ng6?? 34.Qd7+– Kg8 35.Nb3?? Nf4–/+ 36.Kf1 Qe3 37.Bd2?? Qe2 (37...Qe2 38.Kg1 Qg2) 0–1. tanto – bar (1650), net–chess.com, 2002.

4.c4

4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.b5).

4.c4 Be6 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.b5).

4.c4 Be6 5.e3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 Be6).

4.c4 Be7 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5).

4.c4 g6 5.e3 Bg7 6.Be2 0–0 7.Nf3 Nbd7 8.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.b5).

4.d4 ed4

5.Bd4 b6 6.Nf3 Bb7 7.e3 Be7 8.Bd3 c5 9.bc6 Nc6 10.Bb2 0–0 11.0–0 Qc7 12.Nbd2 Nb4 13.Re1 Rac8 14.Bf5 Nd7 15.c3 Nd5 16.Rc1 N5f6 17.Nb3 g6 18.Bb1 d5 19.Nbd4 Ne5 20.Ne5 Qe5 21.Qe2 Bd6 22.Nf3 Qh5 23.h3 Ne4 24.Be4 de4–/+ 25.Nh2 Qa5 26.c4=+ Rc7 27.Ng4+= Rfc8 28.Nf6 ˝–˝. Wartig,Wolfgang – Anger,Klaus, corr DDR–ch I819, 1989.

5.Bd4 c5 6.Bc3 Ne4 7.e3 Be6 8.Bd3 Bd5 9.Qg4 Nc3 10.Nc3 Be6 11.Qf3 d5 12.Nge2 g6 13.0–0–0 Nd7 14.Nf4 Bg7 15.Ncd5+/– Ne5 16.Qe4 Bf5 17.Qa4 Nd3 18.cd3 0–0 19.Qc4 Qd6 20.Kd2 Rfe8 21.Ke2 Rad8 22.Rhe1 g5–/+ 23.Kf1 gf4–+ 24.Nf4 0–1. Hind,Alan – Tait,Jonathan A, SCCA League, 1992.

5.Bd4 c5 6.bc6 Nc6 7.e3 Nd4 8.Qd4 Qa5 9.Qc3 Qc3 10.Nc3 b6 11.Bb5 Bd7 12.Nge2 Bb5 13.Nb5 Rc8 14.0–0–0 14.Kd7 15.f3 15.Be7 16.e4 Rc5 17.Nbd4 17.Rhc8 18.Rd2 d5 19.Rhd1 Rc4 20.c3 de4 21.Nf5 Ke8 22.Ng7 Kf8 23.Nf5 a5 24.Nd6 Bd6 25.Rd6 Ke7 26.Rb6+/– 1–0. Rosner,Dirk – Gabor, Tiger SC, 1999.

4.d4 Nbd7

5.e3 b6 6.c4 g6 7.Nd2 Bg7 8.Bd3 b7 9.d5 Nc5 10.Bc2 Qd7 11.Ba3 0–0 12.Bc5 bc5 13.Ne2 a6 14.Ba4 Qg4 15.0–0= ab5 16.f3? Qg5–/+ 17.f4? ef4 18.Nf3 Qg4 19.h3 Qf5 20.Bc2 Ne4 21.Rb1–/+ Ra2 22.Nf4 Re8 23.Nd2 Nc3 24.Bf5 Nd1 25.Rfd1 gf5 26.Rb5 Ba6 27.Rb3 Rc2 28.Nh5 Bh8 29.Ra3 Bc4 30.Nc4 Rc4 31.Rf1 Rce4 32.Kf2 c4 33.Ng3–/+ R4e5 34.Rc1 Rd5 35.Rc4 Rc8 36.Ke2 Rb5 37.Ra7=+ c5?? 38.Nf5+– Rb2 39.Kf3 Rd8 40.Rg4 Kf8 41.Nh6 (41.Nh6 Rg2 42.Rf7 Ke8 43.Rg2 Bg7 44.Rgg7 d5 45.Rg8#) 1–0. Taulien,Christian (2110) – Ziegert,Andreas (2040), RS–No–Engine–Pyramide, 2009.

5.de5 de5 6.Nf3 Bd6 7.Ba3 Ba3–+ 8.Na3 0–0 9.e3 Qe7 10.Qc1 Nb6 11.Nd2 Be6 12.Be2 Rad8 13.0–0 Rd2!–+ 14.Qd2 Qa3 15.Rad1 Qa2 16.Qd8?? h6 17.Qc7 Qc2?? 18.Qc2+– 1–0. pinecrest1981 – axo, Live Game Caissa's Web, 2004.

4.e3

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.b5).

4.e3 c6 5.c4 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 c6).

4.e3 Be6 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.b5).

4.e3 Be6 5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.Nf3 Nf6 5.b5).

4.e3 Be7 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5).

4.e3 g6 5.c4 Bg7 6.Be2 0–0 7.Nf3 Nbd7 8.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.b5).

4.Nf3 c6

5.a4 Be7 6.e3 Be6 7.Be2= 0–0 8.0–0 h6 9.c4 Nbd7 10.Nc3 d5 11.cd5 cd5 12.Qc2 Rc8 13.a5 Bb4 14.Ba3 Ba3 15.Ra3 Qe7 16.Qb2 Bf5 17.Re1 Qd6 18.Ra4 Nc5=+ 19.Rb4 Bd3–/+ 20.Qa1 Rfe8 21.b6 a6 22.Bf1 Nfe4 23.Rd1 Nc3 24.dc3 Bf1 25.Rf1 Ne4 26.Rc1 Nc3 27.Rb2 Ne4 28.Rbc2=+ Rc5 29.Rc5 Nc5 30.Nd2 d4 31.Qa3=+ de3 32.Qe3 Nd7 33.Nc4 Qd5 34.Qb3 Rc8–/+ 35.Qa4? Nc5?? 36.Qa2?? Nd3–+ 37.Rc3 Qe4 38.Qd2?? Rc4 39.Rd3–/+ Qd3 40.Qd3 Rc1 41.Qf1 Rf1 42.Kf1 Kf8 43.Ke2 Ke7 44.Kd3 Kd6 45.Kc4 Kc6 46.g4 Kd6 47.h3? Kc6 48.f3?? Kd6 49.Kd3 Kd5 50.Ke3 Kc4 51.Ke4 Kb4 52.Ke5 Ka5 53.Kd6 Kb6 54.Ke7 a5 55.Kf7 a4 56.Kg7 a3 57.Kh6 a2 58.f4 a1Q 59.f5 Qf6 60.Kh5 Kc6 61.h4 Kd6 62.g5 Qf5 63.Kh6 Ke6 64.g6 Kf6 65.h5 Qg4 (65...Qg4 66.Kh7 Qd7 67.g7 Qg7#; 65...Qd7 66.g7 Qg7#) 0–1. Acevedo,Daiana – Itkis,Hana, Pan American–ch U12 Girls, 1999.

5.c4 a6 6.a4 ab5 7.cb5 cb5 8.ab5 Ra1 9.Ba1 Bg4 10.Nc3 Be7 11.e3 0–0 12.Be2 Qb6 13.0–0 Nbd7 14.d4 e4 15.Nd2 Be2 16.Qe2 d5 17.Na4 Qd8 18.Nc5 Nc5 19.dc5 Bc5 20.Nb3 Be7 21.Bd4 Qd6 22.Bc5 Qd7 23.Bd4 Rc8 24.Nc5?? (Better is 24.Ra1=+) 24...Bc5–+ (24...Rc5?! 25.Bc5 Bc5 26.Rc1–+) 25.Bc5 Rc5 26.b6 (26.Rb1 b6–+) 26...Rb5 27.Rc1 Rb6 28.Qd2 Ra6 29.h3 Ra8 30.Qb4 Rd8 31.Qb6 h6 32.Rb1 Rb8 33.Rd1 Ne8 34.Qb3 Rd8 35.Qb6 Nc7 36.Qb7 Ne6 37.Qb4 Ng5 38.Qb3 f5 39.h4 Nf7 40.Qc3 (40...Qd6 41.Rd4–+) –+. stoker – cip86, Live Game Caissa's Web, 2004.

4.Nf3 Bd7

5.a4 c6 6.c4 Be6 7.d3 Be7 8.e4 c5 9.Be2= Nbd7 10.0–0 0–0 11.Nc3 h6 12.h3 Re8 13.Nh2 Nf8 14.Bg4 Rc8 15.Qf3 Ng6 16.Bh5 Nh5=+ 17.Qh5 Qd7 18.Rfe1 Bg5 19.Nf3?? Nf4–+ 20.Ne5 de5 21.Qf3 Qd3 22.Qd1 Qd1 23.Rad1 Bc4 24.Rd7 Re7 25.Rd6 Re6 (25...Re6 26.Re6 Ne6–+) 0–1. Andryushchenko,Yuliya – Razboyeva,Ekaterina, RUS–ch U12 Girls, 2004.

5.c4 a6 6.a4 =.

5.c4 b6 6.e3 a6 7.Nc3 ab5 8.cb5 Be7 9.a4 (9.d4 e4 10.Nd2 d5=) 9...0–0 10.Bc4 c6 11.0–0 Qc7 (11...Bg4 12.bc6 Nc6 13.Bb5=) 12.Bb3 (12.bc6 Bc6 13.Nb5 Qd7=) 12...Qc8 (12...Bg4 13.bc6 Nc6 14.Nd5 Nd5 15.Bd5=) 13.d4 (13.d3 Re8=) 13...e4 14.Nd2 Be6 15.Nce4 Ne4 16.Ne4 Bb3 17.Qb3 d5 18.Nc3 Re8 19.Rfc1 Qd7 20.bc6 Nc6 21.Nd5 Na5 22.Ne7 Qe7 23.Qb5 Qe6 24.d5 Qe4 25.Bd4 Red8 26.d6 Rd6 27.Bb6 Rg6 28.g3 Nb7 29.a5 Nd6 30.Qc5 Rf6 31.Qc6 Re8 32.Qe4 Ne4 33.Rc2 g5 34.Bd4 Ra6 35.Rb2 h6 36.Rb6 Re6 37.Re6 fe6 38.Bb6 Nc3 39.Kg2 Nd5 40.Rb1 Kf7 41.e4 Nc3 42.Rb4 Ke8 43.Rc4 Nb5 44.Rc8 Kd7 45.Rh8 Nd6 46.Rh6 Nc4 47.Rh7 Kd6 48.Rg7 Nb6 49.ab6 Rb6 50.Rg5 Rb4 51.f3 e5 52.Rf5 Rb2 53.Kh3 Rf2 54.g4 Ke6 55.Kg3 Rf1 56.Kg2 Ra1 57.h4 Ra2 58.Kg3 Ra1 59.h5 Rg1 60.Kh4 Rh1 61.Kg5 Rh3 62.h6 Rh2 63.Kg6 1–0. parqua – Blacknight, Live Game Caissa's Web, 2004.

5.e3 c6 6.c4 cb5 7.cb5 b6 8.a4 Be7 9.Be2 0–0 10.0–0 Bg4 11.d3 Nbd7 12.h3 Bh5 13.Re1 Rc8 14.Qb3 Bg6 15.Nbd2 Nc5 16.Qa3 e4 17.Nd4 (17.de4 Nfe4 18.Ne4 Be4=) 17...ed3 (17...d5!? 18.Qa2 ed3=+ (< 18...Nd3 19.Bd3 ed3 20.Nc6 Rc6 21.bc6+=)) 18.Bf3 d5 19.Nc6 Rc6 20.bc6 Nce4 21.Qa2?? (Better is 21.Qd3 Nf2 22.Qc3=) 21...Nd2–+ 22.Bd5 Nde4 23.Bf6 Bf6 24.Be4 Be4 25.Qd2 Ba1 26.Ra1 Bc6 27.a5 Qd5 28.ab6 Qg2 0–1. stoker – bigpopae100, Live Game Caissa's Web, 2004.

4.Nf3 Nbd7

5.e3 a6 6.ba6 ba6 7.d4 Rb8 8.Qc1 e4 9.Nfd2 d5 10.c4 c6 11.Be2 Be7 12.0–0 0–0 13.Nc3 Re8 14.Rb1 Rb4 15.cd5 cd5 16.Qc2 Bb7 17.Rfc1 Qb8 18.a4 Bd6 19.Nf1 Rc8 20.Ng3 Nf8 21.Nf5+= Bh2 22.Kh1 Rc7 23.g3 Qc8 24.Nd6 Qh3=+ 25.Bf1 Qh6 26.Nf5 Qh5 27.Nh4 Ng4 28.Qd2= Ng6 29.Ne4 Rc1 30.Rc1–+ a5 31.Bc3?? Nh4–+ 32.Bb4 Nf3 33.Nf6 Nf6 34.Qe2 Bg3 35.Kg2 Bf4 36.Rc8 Bc8 37.Qf3 Qh2# 0–1. EXchess 3.11 – Comet B25, 2003.

5.e3 a6 6.ba6 ba6 7.d4 e4 8.Ng5 h6 9.Nh3 Rb8 10.Qc1 d5 11.c4 Bb4 12.Nd2 c6 13.cd5 cd5 14.Be2 Qa5–/+ 15.Rb1 0–0 16.Nf4 Bb7 17.Ba1? Rfc8–+ 18.Qd1 Bc6 19.Rb4 Qb4 20.0–0 Ba4 21.Nb3 a5 22.Bb2 Bb3 23.ab3 Qb3 24.Qb3 Rb3 25.Ba1 a4 26.Ba6 Rc6 27.Be2 a3 28.Re1 a2 29.Rf1 Rb1 30.f3 Rcc1 31.Rc1 Rc1 32.Kf2 0–1. EXchess 3.11 – Comet B25, 2002.

5.e3 a6 6.ba6 ba6 7.Be2 Rb8 8.Qc1 Be7 9.d4 e4 10.Nfd2 0–0 11.0–0 Re8 12.c4= c5 13.Nc3 Qb6 14.Nb3 Bb7 15.Rb1 cd4 16.ed4 Rec8 17.Re1 Qd8 18.d5 Ne5= 19.Nd2 Nd3 20.Bd3+/– ed3 21.Re3 Nd7 22.Rd3 Ne5 23.Rd4 a5 24.Nb5 Ba6 25.a4 Bf6 26.Ne4 Be7 27.f4 Ng4 28.Na7+– Rc7 29.Nc6 Rc6 30.dc6 Qb6 31.c5! dc5 32.Rd7 c4 33.Kh1 Bf8 34.c7 Qh6? 35.h3+– Re8 36.Ng5 Nf2+/– 37.Kg1 Nd3 38.Qd2 Qb6 39.Kh2 f6 40.Nf3 Bc8= 41.Rd8 Rd8 42.cd8Q Qd8 43.Bc3 Bd6 44.Ba5 Qd7 45.Qc2 Bf4 46.Kh1 Qc6 47.h4 Bg3 48.Bb4?? Bf5–+ 49.Kg1 Qb6 50.Kf1 Nb2!! 51.Rb2 Bc2 52.Rc2 Qb4 53.Rd2 0–1. COMP – COMP, 2002.

4.Nf3 Be7

5.d3 0–0 6.c4 Bg4 7.Nbd2 Nbd7 8.h3 Be6 9.e3 h6 10.Be2 a6 11.a4 ab5 12.ab5 Ra1 13.Qa1 c6 14.0–0 Qc8 15.Qa5 b6 16.Qa4 c5 17.Re1 d5 18.Ne5+/– Ne5 19.Be5 Nd7 20.Bf4 Bg5 21.cd5 Bd5 22.Bf3 Bf3+/– 23.Nf3 Bf4 24.Qf4 Nf6 25.Ra1 Nd5 26.Qc4 Nb4 27.d4+– Qf5 28.Ne5 cd4? 29.ed4 Nc2 30.Rc1 Rc8 31.Nc6 Re8 32.g4 Qf3 33.Qc2 Qh3 34.Ne5 f6 35.Qg6 fe5 36.Rc7 (36.Rc7 Qh1 37.Kh1 Re7 38.Rc8 Re8 39.Re8#) 1–0. slogger – savage13, ChessWorld.net, 2007.

5.d3 Bd7 6.a4 a6 7.ba6 Na6 8.g3 Bc6 9.Bg2 e4 10.Nd4 ed3? 11.Nc6+– dc2?? 12.Qc2 0–0 13.Nd8 Bd8 14.Bb7 (14.Bb7 Ra7 15.Bg2+–) 1–0. MasterofDisaster – igraa, Live Game Caissa's Web, 2005.

5.e4 Ne4 6.d4 d5 7.Bd3 ed4 8.0–0 c5 9.Re1 0–0–+ 10.c4 Nf6 11.cd5 Nd5 12.Nbd2 Nf4 13.Nc4 Nd3 14.Qd3 Be6 15.a4 Re8 16.Re6 fe6 17.Re1 Bf6 18.Ba3 Qd5 19.Re4 Nd7 20.a5 b6 21.a6 Rf8 22.Bc1 Rf7 23.Rf4 Raf8 24.Rg4 Bd8 25.Ng5 Qf5 26.Qf5 ef5 27.Nf7 fg4 28.Nd8 Rd8 29.Kf1 Nf6 30.Bf4 Ne4 31.Ke1 Re8 32.Ke2 Nc3 33.Kd3 Nb5 34.Bg3 Kf7 35.Kd2 Ke6 36.Kc2 Kd5 37.Kd3 Nc3 38.Ne3 de3 39.fe3 Ne4 (39...Ne4 40.Be1 b5–+) 0–1. Pierred (2115) – Kikko (2440), Rated game, 2005.

4.Nf3 Bg4

5.Na3 Be7 6.h3 Bf3 7.ef3 Nbd7 8.d4 ed4 9.Bd4 0–0 10.g4 Re8 11.Be3 Nc5 12.Bg2 c6 13.0–0 cb5 14.Nb5= a6 15.Nd4 Nd5 16.Bd2 Bf6–/+ 17.Nf5 Ba1 18.Qa1 Qf6 19.c3? g6 20.Nh6 Kg7?? 21.g5+– Qd8 22.c4 Kf8 23.cd5 1–0. pinecrest1981 – ross60, Live Game Caissa's Web, 2004.

5.Nc3 Nbd7 6.e3 =.

5.Nc3 g6 6.h3 Bf3 7.ef3 Bg7 8.f4 0–0 9.f5 (9.fe5 de5 10.Bc4 Nbd7=) 9...d5+= 10.Qf3? (better is 10.fg6!? hg6 11.Bd3+=) 10...e4–/+ 11.Qf4 d4 12.Na4 (12.Ne4? Ne4 13.fg6 hg6–+) 12...a6 13.Nc5 (13.Ba3 Nd5 14.Qg3 d3–+) 13...ab5 14.Bb5 (better is 14.fg6!? hg6 15.Qg5–+ (15.Ne4 Ne4 16.Bd3 Nc5 17.Bb5 Qd5 18.Qc7 Nbd7–+)) 14...Qe7–+ 15.Nb3 (15.Bd4?? Nd5 16.f6 Bf6 (16...Nf4?! 17.fe7 Bd4 18.ef8Q Kf8 19.g3–+) 17.Bf6 A) 17...Nf4 18.Be7 Rc8 19.Bg5+–; B) 17...Nf6?! 18.Nb3–/+ (18.Nb7? Nd5 19.Qg3 c6–+); C) 17...Qc5–+) 15...c6 16.Bf1 (16.Be2 Nd5 17.Qg3 Be5–+) 16...d3 (better is 16...Nd5 17.Qg4 Nb4 18.fg6 hg6 19.Rc1 Ra2 20.Bd4 Nc2 21.Rc2 Rc2 22.Qd1–+) 17.c3?? (better is 17.cd3 Nd5 18.f6 Nf6 19.Bf6 Bf6 20.d4–+) 17...Nd5 18.Qg4 Nd7 19.h4 Ne5 20.Qh3 Nc4 21.Bc1 Nc3! 22.dc3 Bc3 23.Kd1 Ba1 24.Na1 Ra2 25.fg6 Ra1 26.gh7 Kh8 27.Qg4 Rc1! 0–1. Leon Manas,JF (1695) – Rocandio Sanchez,Roberto, Liga Insular de Ajedrez por Eq, 2011.

5.e3 c6 6.Be2 d5 7.d4?? e4=+ 8.Ne5 Be2 9.Qe2 Qa5 10.Nc3?? Bb4 11.Qd2–/+ Bc3 12.Bc3 Qb5 13.Bb4 c5 14.dc5 Qb6?? 15.cb6+– (15…Na6 16.Ng4+–) 1–0. GorillaTest – goldenbear, Live Game Caissa's Web, 2004.

5.h3!? Bh5 6.Nc3 =.

3.b5 g6

4.c4 Bg7 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 g6 4.e3 Bg7 5.b5).

4.d4 Qe7 5.e3 Bg7 6.g3 Nf6 7.Bg2 c6 8.de5= de5 9.Ba3 Qd7 10.Nc3 Qd1 11.Rd1 a6 12.bc6 Nc6 13.Bd6 Nd7 14.Nd5+/– Ra7 15.Nc7 Kd8 16.Ne2 Bf8 17.0–0?? Bd6–+ 18.Nd5 Bc7 19.Nf6 Ke7 20.Nd5 Kd8?? 21.f4?? ef4 22.Nef4 Bf4 23.Rf4 f5 24.e4 Rf8 25.Nb6 Kc7 26.Nc8 Kc8 27.ef5 Rf5 28.Rc4?? Kc7 29.Bh3 Rf7 30.Be6 Rg7 31.g4 Ra8 32.a4 Rd8 33.h3 Nb6 34.Rd8 Kd8 35.Rf4 Re7 36.Bg8 Nd7 37.Kf2 Kc7 38.Kg3 h5 39.gh5 Rg7 40.Be6 gh5 41.Kh4 Nde5 42.Kh5 Ne7 43.Re4 Kd6 44.Bg4 Ng4 45.hg4 Rh7 46.Kg5 Kd5 47.Rb4 Nc6 48.Rf4 Nd4 49.Kg6 Re7 50.c3 Ne2 51.Rf5 Ke6 52.Rf6 Ke5 53.Rf8 Re6 54.Kh7 Nc3 55.a5 Nd5 56.g5 (56.g5 Nf4 57.Rf7–+). MasterofDisaster – tryingtomake1500, Live Game Caissa's Web, 2005.

4.g3 Nf6 5.Bg2 =+.

4.e3

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 g6 4.b5).

4.e3 Bg7 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 g6 4.e3 Bg7 5.b5).

4.Nf3 Bg7

5.e3 Bd7 6.c4 Nf6 7.a4 0–0 8.Be2 a6 9.0–0 ab5 10.ab5 Ra1 11.Ba1 c6 12.Nc3 cb5 13.cb5 Be6 14.d4 e4 15.Nd2 d5 16.f3 ef3 17.Nf3 Nbd7 18.Na4 (18.Ne5 Re8=) 18...Nb6 (Better is 18...Ng4!? 19.Qb3 Bh6–/+) 19.Nc5= Ne4 20.Nb7 Qc7 21.Nc5 Nc5 22.dc5 Qc5 23.Bg7 Kg7 24.Qa1 Kg8 25.Ne5 Qe3–/+ 26.Kh1?? Qe2–+ 27.Nc6 Bf5 28.Re1+/– Qe1 29.Qe1 Nc4? 30.Ne7+– Kg7 31.Qc3 Kh6?? 32.Nd5 Re8 33.h3 Nd6 34.Nf6 Re6 35.b6 Kg5 36.Nd5 Kh6 37.b7 Nb7 38.Nc7 Re4? 39.Qh8 Re1? 40.Kh2 Nd6?? 41.Nd5 Ne4? 42.Nf6?? Nf6+= 43.Qf6 Re6 44.Qf7 Kh5?? 45.Qh7 Kg5 46.h4 Kf6 47.Qh8 Ke7 48.h5 gh5 49.Qh5 Rf6 50.Qe2 Be6 51.Qb5 Kf7 52.Kg1 Kg6 0–1. stoker – Schnick, Live Game Caissa's Web, 2004.

5.e3 Be6 6.d4 f6 7.c4 Nd7 8.Nbd2 Ne7 9.Qc2 0–0 10.h4 h6 11.Nb3 f5 12.Be2 Bf7 13.0–0–0 (better is 13.de5!? de5 14.e4+=) 13...e4–/+ 14.Nh2 a5 (14...a6!? 15.ba6 Ra6–/+) 15.g4= a4 16.Nd2 a3 17.Ba1 c6 18.gf5 gf5 19.Rdg1 (19.bc6!? Nc6 20.f3=) 19...cb5+= 20.Rg2 (20.cb5? Rc8 21.Bc3 Nd5–+) 20...Kh8 21.Rhg1 (21.cb5? Rc8 22.Bc3 Nd5–+) 21...Rg8 22.Ne4? (better is 22.f3 ef3 23.Bf3 bc4 24.Bb7–/+) 22...fe4–+ 23.Qe4 d5 (better is 23...Bc4 24.Bc4 bc4 25.Qb7 d5–+) 24.Qf4–/+ Qf8 25.Ng4? Be6 26.Qc7? bc4–+ 27.Bc3 Qb8 28.Qb8 Rab8 29.Bb4 Nf5 30.h5 b5 31.Kc2 Bf8 32.Bf8 Rgf8 0–1. Borkowski,Andrew – Pugh,Derek, Bristol op, 1996.

5.e4 f5 6.ef5 Bf5 =.

5.e4 Nf6 6.Nc3 Nbd7 7.Be2 0–0 8.a4 Nc5 9.d3 Re8 10.0–0 Nfd7 11.Bc1 h6 12.Be3 Kh7 13.Nd5 f5 14.ef5 gf5 15.c4 Ne6 16.Ra2 Nf6 17.Nf6 Qf6 18.g3 f4=+ 19.Bc1 fg3 20.fg3= Qd8 21.Nh4 Nd4 22.Bh5 Rf8 23.Rf8+/– Bf8 24.Bg6 Kh8 25.Qh5+– 1–0. mic (2190) – fhupp (2390), net–chess.com, 2008.

4.g3 Bg7

5.f4 Ne7 6.Bg2 0–0 7.fe5 de5 8.c4 c6 9.a4 a6 10.Nc3 ab5 11.ab5 Ra1 12.Qa1 cb5 13.cb5 f5 14.Na4 Nd7=+ 15.Nf3 Qc7 16.0–0 Bf6 17.Rc1 Qb8 18.Qa2 Kh8 19.e3 e4= 20.Ng5 h6 21.Ne6+= Rg8? 22.Nc7?? b6 23.Bf6 Nf6+– 24.Qf7 Ned5 25.Nd5 Nd5 26.Rc7 (26...Nc7 27.Qf6 Kh7 28.Nc3–+; better is 26.Qd5 Kh7 27.Qc6+–) 1–0. Baeumcher,Karl – Hoerl,Max, Bahn–chN Bad Laasphe, 1994.

5.f4 Bf5 6.Bg2 c6 7.e4 =.

5.Bg2= Nf6 6.Nf3 0–0 7.0–0= c6 8.a4 Nbd7 9.d3 a6 10.c4 ab5 11.ab5 Ra1 12.Ba1 Re8 13.Nbd2 cb5 14.cb5 Nc5 15.d4+= ed4 16.Nd4 d5 17.Qc2 Nfe4 18.Ne4 Ne4 19.e3 h5 20.Rc1 h4 21.Qc7 Qg5 22.Nf3+= Qf5 23.Bg7 Kg7 24.Rc2 h3 25.Nd4+/– Qh5 (26.Bf3 Qg5+/–; 25...Qd7!? 26.Bf3 Qc7 27.Rc7 g5+=). Fernandez Fornes,Juan Alberto – Rojas,Daniel, CAPA II Copa ARG sf, 1995.

3.Nc3 f5

4.e4 f4 5.Bc4 Nf6 6.d4 Nc6 7.Nf3 h6 8.0–0 Bg4 9.Nb5 a6=+ 10.Na3 b5 11.Bb3 Qd7 12.de5 Ne5 13.Ne5 de5 14.f3 Be6 15.Be5 Bd6? 16.Bd6 cd6 17.Qd2 0–0 18.Qf4 Bb3 19.ab3 Rac8 20.Qg3 Ne8 21.Rfd1 Qf7 22.c4 bc4 23.bc4 Rd8 24.Rd5 Qf6 25.Nc2 Nc7 26.Rd3 Ne6 27.Ra6 Qe7? 28.Ne3 Qb7 29.Rdd6 Ng5 30.Rab6 Qa7 31.Rd8 Rd8 32.c5 Qa1 33.Nf1 Rd1 34.Qf2 Nf7 35.b5 Ne5 36.f4 Nd3?? 37.Ra6= Nf2?? 38.Ra1+– Ra1 39.Kf2 Kf7 40.Nd2 Ke8 41.Nc4 Kd7 42.f5 1–0. pierre – sld_po_kgb_razem, kurnik, 2007.

4.e4= Nf6 5.ef5 Bf5 6.Nf3 Nc6 7.Bb5 Bd7 8.a3= a5 9.ba5 Na5 10.Be2 Be7 11.0–0 0–0 12.d3 Nc6 13.Ne4 d5 14.Ng3 Bd6 15.d4 ed4 16.Qd3 Ne4 17.Ne4 Bf5 18.Nd4 Be4 19.Qb3 Qg5 20.Nf3=+ Qg6 21.Rad1 Na5 22.Qc3 d4 23.Rd4 Be5!? 24.Rfd1 c5! 25.Bc4? Kh8+= 26.Rd6?? Bc3 27.Rg6 Bb2 28.Rb6 Nc4 29.Rb5 Ra5 30.Ra5 Na5 31.a4 Bf3 32.gf3 h6 33.Rd5 b6 34.f4 Rf4 (34...Rf4 35.Kf1 Ra4–+) 0–1. Rossbach – Hoffmann, corr SOK–89–36, 1989.

4.e3 Nf6

5.Qe2 a6 6.Nf3 e4 7.Nd4 c5 8.a3?? cd4–+ 9.Ne4 fe4 10.ed4 d5 11.d3 Nc6 0–1. jbumgar (1675) – segovia (1840), net–chess.com, 2009.

5.Qe2 Nc6 6.b5 Nb4 7.Qd1 =.

5.Be2 d5 6.a3 c6 7.Nf3 Bd6=+ 8.Na4 Qe7 9.Nc5 b6 10.Nb3 Nbd7 11.c4 Bb7 12.d4 e4 13.Nh4 g6 14.c5= Bc7 15.Rc1 b5 16.a4 a6 17.Na5 Rb8 18.ab5 ab5 19.Ra1 Qe6 20.Nb7 Rb7 21.g3 0–0 22.Ng2 Rc8 23.h3 Nf8 24.g4 fg4 25.hg4 g5 26.Ra6 Ng6 27.Bc3 Bb8 28.Ra1 Qf7 29.Qc2 Qd7 30.Qd1 Rf8 31.Ra2 Qf7 32.Qc2 Qd7 33.Qd1= Qf7 (33...Ra7 34.Ra7 Qa7 35.Qd2=+) ˝–˝. oldsage – Nokarookoff, ChessWorld.net, 2006.

5.Nf3 Be7 =.

3.Nc3 Nf6

4.Nb5 Be7 5.c4 0–0 6.Rc1 a6 7.Nc3 b6 8.Nd5 Nd5 9.cd5 Bb7 10.Qb3 Nd7 11.Nf3 Nf6–/+ 12.Nh4 Bd5 13.f3?? Bb3 14.Nf5 Ba2 15.Rc6 Bd5 16.Ne7 Qe7 17.Be5 Bc6 18.Bc3 Rfe8 19.Bf6 Qf6 (20.h4 Qa1 21.Kf2 Qd4 22.Kg3 Qb4–+) 0–1. Kaizer – mels03, Live Game Caissa's Web, 2004.

4.e4 (--> 3.e4 Nf6 4.Nc3).

4.Nf3 a6 5.a3 Nc6 6.e3 Bg4 7.Be2 Be7 8.d4 e4 9.Ng5 Be2=+ 10.Ne2 d5 11.c4 b5 12.cd5+= Qd5 13.Nh3 Bd6 14.Nhf4 Bf4 15.Nf4 Qd7 16.d5+/– Ne7 17.Bf6 gf6 18.f3 ef3 19.Qf3 Qd6 20.0–0 0–0–0 21.a4 Ng6 22.ab5 Nf4 23.Ra6 Qb4 24.Qf4 Qf4 25.Rf4 Kb7 26.e4 Rhe8 27.Raf6 Re7 28.Kf2 Rd6 29.Rf7 Rf7 30.Rf7 Kb6 31.Rh7 Rf6 32.Ke3 Rf1 33.g4 Re1 34.Kf4 Rf1 35.Ke5 Rb1 36.g5 Rb5 37.Rh8 (37...Rc5 38.g6+–) 1–0. orane (1935) – caturn5, Live Game Caissa's Web, 2003.

4.Nf3 Be6 5.Ng5 Be7 6.Ne6 fe6 7.b5 0–0 8.e3 d5 9.Be2 d4 10.Nb1 c5 11.0–0 Nbd7 12.a4 b6 13.Bc4+/– Rc8 14.Be6 Kh8 15.c4 Bd6 16.a5 Qe7 17.Bf5 Rb8 18.d3 Ne8 19.Qh5 Ndf6 20.Qg5 e4 21.ed4 ed3 22.Bd3 Qc7 23.Qh4 Bf4 24.Nc3 cd4 25.Nd5 Bh2 26.Kh1 Qg3 27.fg3 Bg3 28.Qg3 Nd5 29.Rf8# 1–0. guest11 – act4, ICC, 2003.

4.Nf3 Be7 5.e4 (--> 3.e4 Nf6 4.Nc3 Be7 5.Nf3).

4.g3 Nc6 5.Bg2 Nb4 6.Ne4 Bf5 7.d3 Be7 8.Nf3? Ne4–+ 9.Qd2?? Nd2 10.Ng5 Bg5 11.Bb7 Rb8 12.Bg2 Nc2 13.Kd1 Na1 14.f4 ef4 15.Kd2 Rb2 16.Kc3 Qf6 17.Kc4 Be6 18.Bd5 c6 19.d4 Bd5 (20.Kd3 Qf5 21.e4 fe3 22.Kc3 Qc2) 0–1. Statuto,Katia – Bremond,Mathilde, FRA–chT3 Gr5, 2002.

4.e3

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.Nc3).

4.e3 Be7 5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.Nf3 Be7 5.Nc3).

3.d3 Nd7

4.c4 Be7 5.Nf3 (5.Nd2 Ngf6 6.d4 ed4 7.Bd4 c5+=; 5.a3 Ngf6 6.Nf3 0–0 7.e3 a5+=; 5.e3 Ngf6 6.Nf3 c6 7.Be2 a5=) 5...Bf6 6.e4 Ne7 7.Be2 a5 =.

4.Nd2 f5 5.e4 Ndf6 6.Ngf3 fe4 7.de4 Ne7 8.Bd3 Ng6 9.h3 Be7 10.Bc4 h6 11.a3 Nf4 12.0–0 g5 13.Nh2 h5 14.Nhf3 Nh7 15.Nh2 Nf8 16.Ndf3 Bd7 17.a4 Qc8 18.Ne5 (18.h4!?=) 18...de5–/+ 19.Be5 Rh6 20.Qf3 N8g6 21.Bf4 Nf4 22.Qb3 Be6 23.Rad1 Bc4 24.Qc4 Re6 (24...Qe6!? 25.Rd4 c6–+) 25.Rfe1–/+ c5 26.Qb5 Qc6 27.Qc6 Rc6 28.b5 Rd6 29.Rd6 Bd6 30.Nf3 Be7 31.Rd1 (31.Kh2 Rd8–/+) 31...Rd8 32.Rd8 Bd8 33.Ne5 (better is 33.Kf1!?–/+) 33...Ne2–+ 34.Kf1 Nc3 35.Nd3 Be7 36.f3 Na4 37.g4 hg4 38.hg4 Nc3 39.Kf2 Nb5 40.f4 gf4 41.Nf4 a5 0–1. De Jager,Jaap (2305) – De Graaf,J, PKS op–A Netherlands, 2003.

4.e4 d5 5.a3 Ngf6 6.ed5 a5 7.d4 e4 =.

4.Nf3 d5 5.a3 a5 6.ba5 Bd6 7.e4 de4 =.

4.Nf3 Ngf6 5.e4 (5.e3 d5 6.Ne5 Bb4 7.Nd2 Ne5+=) 5...d5 6.a3 a5 7.ba5 de4 +=.

4.c4 Ngf6

5.e3 d5 6.a3 a5 7.Qa4 c6 +=.

5.Nf3 b6 6.Nc3 a5 (6...d5 7.cd5 Bb4 8.e4=) 7.a3 (7.b5 h6= (7...Be7=)) 7...ab4+= 8.ab4 Ra1 9.Qa1 c5 10.bc5 bc5 (worse is 10...dc5 11.Nb5+/–) 11.g3 g6 (11...Be7 12.Bg2=) 12.Bg2+= Bh6 13.0–0 0–0 14.Nb5 Qe7 15.Qa7 e4 (15...Ne8 16.Qa8 Nb6 17.Qa5+=) 16.Bf6+/– Qf6 17.de4 Ne5 18.Ne5 Qe5 (18...de5 19.Qc5 Rd8 20.Nc3+–) 19.Rd1 Rd8 (19...Qb2!? 20.Nd6 Qe2+–) 20.Qc7+– Bg5?? (20...Rf8+–) 21.f4 (21.f4 Qf6 22.fg5 Qg5 23.Nd6+–; 21.Rd6 Qa1 22.Bf1 Bh3 23.Qd8 Bd8 24.Rd8 Kg7 25.Rg8 Kg8 26.e5 Qf1; 21.Nd6?! Rd6 22.Qd6 Qd6 23.Rd6 Be7+–) 1–0. Wall,Bill – Young,A, internet, 2001.

5.Nf3 b6 6.Nbd2 d5 7.Ne5 Ne5 8.Be5 Bd6 9.Bd6 Qd6 10.cd5 Qd5 11.Qc2 c6 12.Rc1 Bb7 13.Qc4 Qc4 14.Nc4 0–0 15.Nd6+– Rab8 16.Nb7 Rb7 17.Rc6 Nd5 18.a3 a5 19.g3 ab4 20.Bg2 Ne7 21.Rc1 Ra7 22.ab4 Rc8 23.Rc8 Nc8 24.Kd2 Nd6 25.e4 g6 26.Rc1 Ra2 27.Ke3 Rb2 28.Rc6 Nb5 29.Rb6 Rb4 30.e5 Kg7 31.Rb7 Kf8 32.Bd5 Nc7 33.Rc7 (33.Rc7 Ke8 34.Bf7 Kf8 35.d4+–; 33.Rb4 Nd5 34.Kd4 Nb4=+) 1–0. Trkn – guest1651, ICC, 2004.

5.Nf3 b6 6.e3 Bb7= 7.Be2 d5 =.

5.Nf3 Be7 6.e3+= 0–0 7.Be2 c6 +=.

3.d3 f5

4.Nd2 Be6 5.e4 f4 6.c4 Nf6 7.Ngf3 h6 8.Be2 Be7 9.Nh4 Kd7 10.Qa4 c6 11.Ng6 Rg8 12.Nf3 Qe8 13.Nge5 de5=+ 14.Ne5 Kc7 15.c5 Nbd7 16.f3 g5 17.0–0–/+ Ne5 18.Be5 Kc8 19.Rfd1 Nd7–/+ 20.Bd6 Bd6 21.cd6 Nb6 22.Qc2 h5 23.d4=+ Kd7 0–1. alaamattar (2135) – jasniepanicz (2110), net–chess.com, 2005.

4.e4 f4 5.Be2 Nf6 6.Nc3 d5 7.a3 d4 8.Na2 Be7 9.Nf3= Qd6 10.0–0 b6 11.c3 c5 12.cd4 cd4 13.Rc1 0–0 14.Rc2 Be6 15.Nc1 Nbd7 16.Ng5=+ h6 17.Ne6 Qe6 18.Ba1 Rac8 19.Rc8 Rc8 20.Bf3 g5 21.h3 a5=+ 22.Qd2 ab4 23.ab4 b5 24.Qb2 Nb6 25.Nb3 Na4 26.Qb1 Qd6 27.Nd2 Qb4 28.Qa2 Kg7 29.Rb1 Qa5 30.Bd1=+ Qa6 31.Ba4 Qa4 32.Qe6+= Re8 33.Qe5 Bb4? 34.Qc7 Kg6 35.Nf3+– Ba5? 36.Qc6 Qa2 37.Rc1 b4?? 38.Bd4 Qe6 39.Qb5 Bd8 40.Rc6 (40.Rc6 Qf7 41.Qf5 Kg7 42.e5+–; < 40.Qb4 Kh7+–) 1–0. mic (2100) – stormer (2200), net–chess.com, 2007.

4.e3 Nf6

5.Nd2 Nbd7 6.Ngf3 Be7 7.c4 c5 (7...0–0 8.Be2=) 8.Ng5 (8.a3 a5=) 8...Qb6 (worse is 8...cb4 9.Ne6 Qa5 10.Nb3+/–) 9.b5 h6 (9...Nf8 10.Qb3=) 10.Ngf3 a6 11.a4 a5 (11...0–0 12.Nh4 f4 13.Ng6+=) 12.Nh4+= Nf8 13.Qf3?? (better is 13.e4 fe4 14.de4+=) 13...g5–+ 14.Nf5 g4 15.Nd6 Qd6 16.Qe2 (16.Qd1 Ng6–+) 16...Bf5 (16...Be6 17.Nb3–+) 17.0–0–0 (17.h3 Ng6 18.hg4 Bg4–+) 17...0–0–0 18.g3 (18.Ne4 Qe6 19.Ng3 Kb8–+) 18...Bd3 (better is 18...Ne6–+) 19.Qd3–/+ Qd3 20.Bd3 Rd3 21.Be5 (21.Kc2 Rd7 22.Be5 b6–/+) 21...Ng6 (21...N8d7 22.Bf6 Bf6 23.h3–+) 22.Bb2 (22.Bf6 Bf6 23.Ne4 Rd1 24.Kd1 Be7–/+) 22...Rf8 23.Rhf1 (23.Kc2 Rd6–+) 23...b6 (23...Nd7 24.Kc2 Nde5 25.h3–+) 24.Kc2 Rfd8 (24...Rd6 25.e4 Re6 26.Rde1–+) 25.Bc3 (25.e4 Ne8 26.f4 gf3–+) 25...Ne8 (better is 25...R3d6–+) 26.Rde1? (better is 26.f4 gf3 27.Rf3–+) 26...Bf6 27.Ne4 Bc3 28.Nc3 R3d6 (28...Rd2!? 29.Kb3 Nd6 30.Rd1–+) 29.Nd5 Nf6 30.e4 Re8 (30...Ne5 31.Kb3–+) 31.h3 (31.f3 Ne5 32.fg4 Nfg4–+) 31...h5 (31...gh3 32.Nf6 Rf6 33.f4–+) 32.hg4 hg4 33.Rh1? (better is 33.f3 Ne5 34.fg4 Nfg4 35.Kc3–+) 33...Re4 34.Re4 Ne4 35.Rh6 Ne5 36.Rh8 Kd7 37.Rh7 Ke8?? 38.Re7+/– Kd8 39.Re5 Nf2 40.Re2 Nh3 41.Kd3 Ng5+= 42.Re5 Nf3 43.Re4 Nh2 44.Ke3 Nf1= 45.Kf2 Nd2 46.Rg4 Nc4 47.Rc4 Rd5 48.Ke3 Ke7 49.Rh4 Rd6 50.Rf4 Rd1 51.Rh4 Rg1 52.Kf2 Ra1 53.Ke2 ˝–˝. Amor Alcaide,Manuel (1975) – Corrales Adamuz,Cristian (1820), 12th Torneig Internacional Sant Marti, 2010.

5.Nf3 Be7 6.Be2 0–0 7.0–0 Be6 8.c4 Nbd7 9.Nbd2 Bf7 10.Ng5 Qe8 11.Bf3 Rb8 12.e4 fe4 13.Nde4 Ne4 14.Nf7 Qf7 15.Be4 Nf6 16.Bf3 c6 17.a4 a6 18.Qe2 Kh8 19.Rfe1 Nd7 20.d4 Bf6 21.d5 c5 22.Qd2 b6 23.Bg4 Rb7 24.b5 a5 25.Rf1 Qg6 26.Qe2 Bg5 27.Bh5 Qh6 28.Ra3 Nf6 29.Rh3 Nh5 30.Rh5 Qg6 (30...Qf6!?=) 31.Qg4+/– Bh6 32.Qg6 hg6 33.Rh4 Rf4 34.Rf4 Bf4 35.g3 Bh6 36.f4 ef4 37.gf4 Re7 38.f5 (better is 38.Rf2!?=) 38...gf5–/+ 39.Rf5 Kg8 40.Rf3 Re4 41.Rc3 Be3 42.Kg2 Bd4 43.Rc2 Bb2 44.Rb2 Rc4 0–1. Szymanski,Leszek (1870) – Bulakowski,Andrzej, Mistrzostwa Polski w Szachach Niepelnosprawnych Poland, 2009.

4.Nf3 Nf6

5.e3 Be7 6.Be2 0–0 7.0–0 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.Nf3 Nf6 5.Be2 Be7 6.0–0 0–0 7.d3).

5.g3 b6 6.Bg2 (6.Nbd2 Be7 (6...c6) 7.Bg2 (7.c4 0–0 8.Bg2 Bb7 9.0–0 a6 10.a3=) 7...Bb7 8.0–0 0–0 9.c4 a6 10.a3=) 6...Bb7 (6...e4 7.de4 (7.Nfd2) 7...fe4 8.Nfd2 d5 9.c4 c6 10.b5=) 7.0–0 (7.c3 a5 (7...Nbd7) 8.b5 Be7 9.c4 0–0 10.0–0=; 7.c4 Be7 8.0–0 a6 (8...0–0) 9.Qa4 (9.d4 e4 10.Nh4=) 9...Qd7 (9...Bc6) 10.Qd7=; 7.Nbd2 Be7 8.0–0 0–0 9.c3 (9.c4 Qe8 10.Qc2=) 9...a5 10.Qb3=; 7.a3 Be7 8.0–0 0–0 9.c4 a6 10.Nc3= (10.d4=)) 7...Be7 8.e4 (8.c4 0–0 9.Nc3 (9.a3 a6 10.d4=) 9...a6 10.a4= (10.a3=)) 8...Nc6 (8...a5 9.ef5 (9.b5 fe4 10.Ng5+=) 9...ab4 10.Ng5=; 8...fe4 9.Ng5 a5 10.ba5=) 9.Ng5 (9.b5 fe4 10.Nfd2=) 9...Qd7 (worse is 9...Nb4 10.a3+– 1.50 (10.Ne6 Qd7 11.Ng7 Kd8 12.Nf5+–); 9...fe4 10.de4=) 10.Bh3 (10.ef5=) 10...g6 11.ef5 (11.b5!? Nb8 12.Nc3=) 11...Nb4–/+ 12.Nc3 (12.c3 Qc6 13.f3 Nbd5+=) 12...Qc6 (12...gf5 13.f4 Qc6 14.Nf3 ef4 15.a3–/+) 13.Nce4 d5 (13...Nc2? 14.Rc1 Qa4 15.Rc2 Ne4 16.Ne4 (16.de4 Bg5 17.Rc7 Qe4 18.Rb7 Qb7 19.Qd6 Qe7 20.Qc6 Kf7+–) 16...gf5 17.Bf5+–; 13...Qc2?! 14.Qc2 Nc2 15.Rac1 Ne4 16.Ne4+=) 14.Nf6 Bf6 (14...Qf6 15.Ne6 Kd7 16.f4 gf5 17.fe5+–) 15.Ne6 (better is 15.a3!? Bg5 16.Be5–/+) 15...d4–/+ (15...Nc2 16.Rc1 d4 17.f3+/–; worse is 15...Qc2 16.Qc2 Nc2 17.Rac1+/–) 16.f3 Nd5 (16...Nc2 17.Rc1 Ne3 18.Qb3+–; 16...Qc2?! 17.Qc2 Nc2 18.Nc7 Kd8 19.Na8 Na1 20.Nb6+=) 17.Qe2 (17.Re1 Kf7–/+) 17...Ne3–+ 18.Rf2? (18.c3 gf5 19.Nd4 ed4 20.cd4+=) 18...gf5 19.Nd4 (19.Bf5 Nf5 20.Nd4 Nd4 21.Bd4 0–0–0–+) 19...ed4 20.Bf5 Qb5 21.Bc1 (21.Bd4 Bd4 22.c3 Qf5 23.cd4–+) 21...Qf5 22.Be3 de3 23.Qe3 Kd7 (23...Kf7!? 24.g4 Qd7 25.c3–+) 24.Rb1 Rae8 (24...Rae8 25.Qf4 Qf4 26.gf4 Bd4–+) 0–1. Popela,P – Zavodny,Z, Brno, 1976.

5.g3 e4 6.Nfd2+= A) 6...e3 7.fe3 Ng4 A1) 8.e4 fe4 9.Ne4 (9.Qc1 ed3 10.cd3+=) 9...d5 10.Ned2+=; A2) 8.Bh3 Ne3 9.Qc1 Qe7 10.Nf1+=; B) 6...d5 7.a3 c5 8.bc5 Bc5 9.Nb3 Bb6 10.e3+=.

5.g3 e4 6.Nd4 d5 7.a3 (7.c3 c5 8.bc5 Bc5 9.Bg2 Qb6 10.Qb3+=) 7...c5 8.bc5 Bc5 9.Nd2 Nc6 10.N2b3 +=.

5.g3 e4 6.Nh4 A) 6...d5 7.a3 g5 8.Ng2 a5 9.b5 Bc5 10.h4=; B) 6...Bd7 7.a3 (7.Qd2 d5 8.Bh3 g6 9.0–0 Bg7 10.Rd1+=; 7.Bh3 d5 8.a3 g6 9.c4 dc4 10.de4=; 7.Nd2) 7...g5 8.Ng2 Bg7 9.h4 g4 10.Nf4=; C) 6...g5 7.Ng2 d5 8.Qd2 Rg8 9.h4 h6 10.hg5=.

3.d3 Nf6

4.a3 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.d3).

4.Nd2 a6 5.Ngf3 Nc6 (5...Be7 6.e4+=) 6.a3 h6 (6...Be7 7.e4+=) 7.e3 (7.e4 Be7=) 7...Be7 (7...Bg4 8.Be2=) 8.Be2 Be6 9.0–0 Nd7 10.c4 b6 (10...0–0 11.d4 ed4 12.Nd4 Nd4 13.Bd4+=) 11.Qc2 (11.d4 ed4 12.ed4 d5+=) 11...Bf6 (11...0–0 12.d4 ed4 13.b5+=) 12.d4+/– ed4 13.ed4 Ne7 14.Ne4 Bf5 (14...d5 15.cd5 Nd5 16.Ne5+=) 15.Nf6 (15.Bd3 Bg4+/–) 15...Nf6 16.Bd3 (16.Qa4 b5 17.cb5 Bd7+=) 16...Bd3+= 17.Qd3 0–0 (17...d5!?+=) 18.d5+/– Ng6 (18...Nd7 19.Rfe1+/–) 19.Qd4 (19.Rae1 a5+/–) 19...Re8+= 20.Rfe1 Qd7 21.h3 (21.Nh4 Re1 22.Re1 Re8 23.Re8 Qe8+=) 21...Qf5 22.Nd2 (better is 22.Nh4!? Qg5 23.Ng6 Qg6 24.Qf4+=) 22...Nf4+= 23.g4 (23.Kh2 Nd3 24.Re8 Re8+=) 23...Qc2 (better is 23...Nh3!? 24.Kf1 Qg4 25.Qg4 Ng4–+) 24.Qf4+= Qb2 25.Reb1 (25.Red1 Re2 26.Nf1 Rae8+=) 25...Qc2 (25...Qc3 26.Kg2+=) 26.Re1 (26.Rc1 Qd3 27.f3 Nd5 28.cd5 g5+=) 26...Qd3 (26...Qc3 27.Nf3 Re1 28.Re1 Qa3 29.Re7–/+) 27.Nf1 (better is 27.Re3!? Re3 28.Qe3+=) 27...Qh3 28.f3 (28.Ne3 b5–/+) 28...Qh4 (28...b5 29.Nd2–+) 29.Ne3–/+ Qg5 (29...a5 30.Ng2 Qh3 31.Ne3–/+) 30.Qd4 (30.Qg5 hg5 31.Kf2 b5+=) 30...Qe5 (better is 30...b5!?–+) 31.Qe5+= Re5 32.Nf5 Rae8 33.Kf2 (33.Re5 Re5 34.Kf2 b5–/+) 33...Re1 (33...b5 34.Re5 Re5 35.cb5 ab5 36.Rc1–/+) 34.Re1+= Re1 35.Ke1 Kf8 (35...b5 36.Kd2+=) 36.Ke2 h5 ˝–˝. Suarez,E – Ganuza F,Eva, ESP–ch (Women), 1992.

4.Nd2 Nc6 5.c3 –/+.

4.Nd2 Be6 5.Ngf3 Nbd7 6.g3 h6 7.Bg2 Be7 8.0–0 0–0 9.c4 a6 10.a3 Rb8 (10...c6 11.Qc2=) 11.c5 (11.Qc2 c5+=) 11...dc5= 12.bc5 Bc5 13.Ne5 Ne5 14.Be5 Ng4 15.Bb2 (15.Bc3 Bd4 16.Rc1 c5=) 15...Qd7 (15...Bd4 16.Qc2=) 16.Rb1 Rfe8 (16...b6 17.Qc2=) 17.Ne4 Bb6 18.h3 ˝–˝. Santana,Expedito (1680) – Sato,Leticia Miho (1830), Mogi das Cruzes BRA, Catropa Mem, 2014.

4.Nd2 Be7 5.Ngf3 =+.

4.e4 (--> 3.e4 Nf6 4.d3).

4.g3 d5 5.a3 a5 6.b5 Bd6 7.Bg2 Nbd7 +=.

4.g3 Bd7 5.Bg2 Bc6 (5...a5 6.b5 c6 7.bc6 bc6=) 6.Nf3 a6 (6...a5 7.ba5 Ra5=) 7.0–0 (7.c4 Be7=) 7...Be7 8.c4 0–0 9.a4 Nbd7 10.b5 ab5 (10...Bf3 11.Bf3 Nc5 12.Nd2=) 11.ab5+= Bf3 12.Bf3 Nc5 13.Nd2 Nfd7 (13...Ra1 14.Qa1 Qb8 15.d4 ed4 16.Bd4+=) 14.Ne4 (14.Qc2 Re8+=) 14...f5 (14...Ra1 15.Qa1 Qb8 16.Nc5 Nc5 17.Bd5+=) 15.Nc5 Nc5 16.Ba3 (16.Bd5!? Kh8 17.Ba3+/–) 16...e4= 17.de4 Ne4 (17...fe4 18.Bc5 ef3 19.Bd4 Ra1 20.Ba1 fe2 21.Qe2=) 18.Qc2 (18.Qd5 Kh8 19.Bb2 Ra1 20.Ba1 Nc5+/–) 18...d5 (18...Bf6 19.Bb2=) 19.Be7+= Qe7 20.cd5 Ra1 21.Ra1 Rd8 (21...Qe5 22.Rd1+/–) 22.Rd1 (22.Ra7 Nd6+–) 22...Rd7 23.Qc4 Nd6 24.Qa2 h6 25.Kg2 Kh7 26.Kg1 (26.Qb3 Ne4+/–) 26...g5 (26...Kg8 27.e3 Qe5+/–) 27.Qb1+/– Kg8 28.Kg2?? (better is 28.h3+/–) 28...g4–/+ (28...g4 29.b6 gf3 30.ef3 cb6 31.Qb6 f4–/+) 0–1. Davidson – Wall,Bill, Taylorsville, 1975.

4.g3 Nbd7 5.c4 (5.Bg2 d5 6.a3 c5 7.Nf3 cb4+=; 5.Nf3+= d5 6.a3 e4 7.Nfd2 a5+=; 5.a3 a5 6.b5 c6 7.c4 cb5+=) 5...Be7 6.Bg2 d5 7.a3 a5 +=.

4.h3 Nc6 5.a3 d5 6.b5 Na5 7.Be5+= Nd7 8.Nf3 c6 9.a4 Ne5= 10.Ne5 Qf6 11.d4 c5 12.c3 cd4–/+ 13.cd4 Bb4 14.Nd2 Nb3?? 15.Rb1 Bd2–+ (15...Bd2 16.Qd2 Nd2 17.Kd2 Qf2–+) 0–1. ajmcroberts (1735) – imreallylousy (1905), net–chess.com, 2007.

4.Nd2 b6

5.c4 Bb7 6.e4 Be7 7.Ngf3 Nbd7 8.Be2 c6 9.0–0 h6 (9...a5 10.ba5 Ra5 11.d4+=) 10.h3 (10.d4 0–0+/–) 10...0–0 11.a4 Qc7 12.Rc1 Nh7 (12...d5 13.cd5 Bb4 14.dc6 Bc6 15.Nc4+/–) 13.Nh2 (13.d4!?+/–) 13...Bg5 14.Ndf3?? (better is 14.d4=) 14...Bc1–+ 15.Bc1 d5 16.Nh4 (16.ed5!? cd5 17.d4–+) 16...dc4 17.dc4 c5 18.f3 (18.Bg4 Ndf6 19.bc5 Qc5–+) 18...cb4 19.Nf5 Nc5 20.Bd2 a5 21.Be3 Rad8 22.Qa1 Rd7 23.Ng4 f6 24.Kh2 Rfd8 25.Qa2 Qc6 26.Bc5 bc5 27.Qb3 Qe6 28.Nge3 Rd2 29.Re1 Ng5 30.Nd5 Kh7 31.Kg3 g6 32.Nfe7 Rd7 33.h4 Nf7 34.Qe3 Rd4 35.h5 Re7 36.hg6 Kg6 37.Ne7 Qe7 38.Rh1 Kg7 39.Rh5 Bc6 40.Qb3 Qd7 41.Kf2 Ba4 42.Qe3 b3 43.Rh1 Qb7 44.Qc3 Qb4 45.Qb4 ab4 46.Rb1 Nd6 47.Ke3 Nc4 48.Bc4 Rc4 49.g4 Rc2 50.Kd3 c4 51.Ke3–+ c3 Black prepares the advance b2 52.Kd3 Bb5 53.Ke3 b2 0–1. Dieckmann,Paul – Lenhart,Erich, Schleswig Holstein–ch B, 1988.

5.Ngf3 a6 6.e4 =.

5.Ngf3 Bb7 6.g3 (6.e4 Nbd7=) 6...Be7 (6...d5 7.b5 e4 8.Ne5+=) 7.Bg2= 0–0 8.0–0 Nbd7 9.c4 Re8 10.Ne1 (10.d4 e4 11.Ng5 d5+=) 10...Bg2+= 11.Ng2 Bf8 (11...d5 12.a3+=) 12.e4 (12.f4 a5 13.b5 d5=) 12...c6 (12...d5 13.a3 c5 14.cd5 cb4 15.Qf3=) 13.Qb3 (13.f4 d5 14.cd5 cd5 15.fe5 Ne5 16.Be5 Re5=) 13...a5 14.a3 (14.f4 ab4 15.Ne1 ef4 16.Rf4 Nh5+=) 14...a4 (14...d5 15.cd5 cd5 16.ed5 ab4 17.ab4=) 15.Qa2 g6 (15...Qc7 16.f4=) 16.Nf3 (16.f4 Bg7=) 16...c5 (16...Qc7 17.Nfe1=) 17.b5 Qe7 18.Ne3 Bh6 19.Bc1 Bg7 20.Kg2 h6 21.Qe2 Nh5 (21...Nf8 22.Bd2=) 22.Ng4 (22.Nd5 Qd8+=) 22...g5 (22...Kh7 23.Qd2+=) 23.Ng1 (23.Ne3 Nhf6+/–) 23...Ndf6 (23...Nhf6 24.Ne3+=) 24.Ne3 Qe6 25.Nf5 Kh7 26.Nf3 Kg6 (26...Qd7 27.h3+/–) 27.h4 (27.Be3 d5 28.Ng7 Kg7 29.ed5 Qd6+/–) 27...gh4 28.N3h4 Kh7 29.Qd2 Ng8 (29...Rh8!?+/–) 30.Rh1+– Bf6 (better is 30...Red8!?+–) 31.Nf3 (worse is 31.Nh6 Nf4 32.Kf1 Nh6+–) 31...Nf4? (31...Kg6+–) 32.gf4 ef4 33.Qf4 Ba1 (33...Rad8+–) 34.Ng5 Kg6 (34...Kh8 35.Ne6 fe6 36.Nh6+–) 35.Ne6 Re6 (35...fe6 36.Qd6 Bf6 37.Nh6 Nh6 38.Rh6 Kf7+–) 1–0. Kwiecien,J – Janczak,A, Lublin Poland, 1995.

4.e3

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.d3).

4.e3 Be6 5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.Nf3 Nf6 5.d3).

4.Nf3

4.Nf3 (--> 3.Nf3 Nd7 4.d3).

4.Nf3 Be7 5.g3 0–0 6.Bg2 (--> 3.g3 Nf6 4.Bg2 Be7 5.d3 0–0 6.Nf3).

3.d4 Nc6

4.a3 ed4 5.Bd4 Nd4=+ 6.Qd4 Be7 7.Nd2 Bf6 8.Qe3 Ne7 9.Rd1 0–0 10.Ne4=+ Nf5 11.Qf4 Be5 12.Qd2 Re8 13.Nf3 Qe7 14.e3 Bb2 15.Qd3?? Qe4–+ 16.Qe4 Re4 17.Bd3 Ne3! 18.Be4 Nd1 19.Kd1 c6 20.c3 Bc3 21.Kc2 Bf6 22.h4 Be6 23.h5 Re8 24.Re1 Kf8 25.Bh7 Ke7 26.g4 Kd7–+ 27.Nh2? Rh8 28.Bd3 Be5 29.Rh1 g6! 30.f3? gh5 31.Nf1 hg4 32.Rh8 Bh8 33.fg4 Bg4 34.Ne3 Be6 35.Be4 d5 36.Bh7 Kd6 37.Kb1 d4 (37...d4 38.Nf1 f5–+) 0–1. SIRMO – yulio, ChessWorld.net, 2006.

4.a3 d5 5.Ra2 Be6 6.Nc3 Nf6 7.Nf3 e4 8.Ng5 Qe7 9.Ne6 Qe6 10.g3 Be7 11.Bg2 Nd7 12.0–0 0–0–0 13.Nb5 a6 14.Nc3 h5 15.e3 g5 16.h3 f5 17.f3 Bd6 18.f4 gf4 19.Bc1 fe3 20.Be3 Rhg8 21.b5 Ncb8 22.Ne2 a5 23.a4 Nf6 24.Bf4 Bf4 25.gf4 black timed out 1–0. nimzou (1705) – mgokhale (2080), net–chess.com, 2014.

4.c3 e4 5.d5 Ne5 6.f4 ef3 7.gf3?? Nc4 8.Bc1?? Qh4 0–1. Elsner,David – Rohde,Marc, remoteschach.de, 2003.

4.b5 Nd4

5.Bd4 ed4 6.Qd4 Nf6 7.e4 c5 8.bc6 bc6 9.Nf3 Be7 10.Bc4 0–0 11.0–0 Be6 12.Be6= fe6 13.Nbd2 d5 14.e5 Nd7 15.c4 Qc7 16.cd5 cd5 17.Rfc1 Qa5 18.Nb3 Qa6 19.Rc7 Rfd8 20.Qg4 Rac8= 21.Rc8 Rc8 22.Nbd4 Qa2 23.Qe6+/– Kh8?? 24.Rf1 Nb6 25.Qe7 Qa3 26.Qa3 (26.Qa3 Nc4 27.Qa7+–) 1–0. d2d4 – LEO, playchess.de, 2002.

5.Bd4 ed4 6.Nf3 Bd7 7.Nd4=+ Nf6 8.e3 g6 9.Nd2 Bg7 10.N2f3 0–0 11.c4 Ne4 12.Qc2 Re8 13.Bd3 Nc5 14.0–0 Bg4 15.Nd2 Nd3 16.Qd3=+ Bf5 17.e4 Bd7 18.N2f3 Qf6 19.Rfd1 Bg4 20.h3 Be6 21.a4= Rac8 22.Rac1 Rcd8 23.Qe2 Bh6 24.Rc2 Bf4 25.a5 Qg7 26.a6 Bh3? 27.gh3+– Qh6 28.h4 ba6 29.Nc6+– Rd7 30.ba6 g5 31.hg5 Qh3 (31...Qh3 32.Qd3 Ra8+–). wlittle (2155) – nottoo (2050), net–chess.com, 2005.

4.de5 Nb4

5.ed6 cd6 6.a3 Nc6 7.Nd2 Nf6 8.e4 Be7 9.Be2 a6 10.h3 0–0 11.Ngf3=+ Nd7 12.0–0 Bf6 13.Rb1 Bb2 14.Rb2 Qf6 15.Qb1 b5 16.Nb3 Nc5 17.c4 Na4 18.Rc2 Nc3 19.Qc1 Ne2 20.Re2= Be6 21.cb5 Ne5 22.Ne5 Qe5 23.Nd2 Qb5 24.Rfe1 Rac8 25.Qa1 Rc2 26.Qd4 Rd8 27.Qe3 Qe5 28.Nf3+= Qb2 29.Nd4 Re2+= 30.Re2 Qb1 31.Kh2 Qb8?? 32.g3 Bd7 33.Rc2 Qb6 34.Rc3 Re8= 35.Rb3 Qc5 36.Rc3 Qh5 37.h4 h6 38.Kg1 d5–/+ 39.f3 de4 40.fe4 Qd1 41.Kf2 Qh1 42.Nf3 Bh3 43.Ng1?? Qh2 44.Ke1 Bf5! 45.e5 Qb2 46.Kf1? f6 47.e6? Be6 48.Ne2?? Bh3 (48...Bh3 49.Kf2 Re3 50.Re3 Qb1–+) 0–1. mic (2120) – capacuba (2260), net–chess.com, 2007.

5.Nf3 Bg4 6.Nbd2 Be6 7.c4 Nc6 8.Qb3 Rb8 9.ed6 Qd6 10.Rd1 Na5 11.Qc2 Qc6 12.e3 f6 13.Nd4 Qd7 14.Bd3 g6 15.Ne6 Qe6 16.c5 Nc6 17.Bc4 Qg4? 18.Qb3 Qg2 19.Bf7 Kd8 20.Qe6 (20…Qg1 21.Nf1 Nd4 22.Qe8#) 1–0. Marre – Rosochacz, zagraj.pl, 2003.

4.de5 de5

5.b5 Qd1 6.Kd1 Nb4 7.e4 Nf6+/– 8.Nd2 Bc5 9.a3+/– Bf2 10.ab4+– Bg4 11.Be2 Be3 12.Bg4 Ng4 13.Nh3 0–0–0 14.Bc3 Bf2?? 15.Ke2 Be3 16.Nf3 Rd7? 17.Rhd1 Rhd8? 18.Rd7 Rd7 19.Ne5 Re7 20.Ng4 Bb6 21.e5 f6 22.Kf1 h5 23.ef6 Rd7 24.fg7 Rd8 25.Nf6 1–0. coloplayah (2000) – davidjensen (1790), net–chess.com, 2005.

5.Qd8 Kd8 6.b5 Nd4=+ 7.Bd4 ed4 8.a3 c6 9.bc6 bc6 10.g3 Ba6 11.Bg2 Rc8 12.Nf3= Bc5 13.Ne5 Nh6 14.Nc6 Ke8 15.Ne5 Bd6 16.Nf3 Rc2 17.Nd4+= Rc4 18.Nb3 Rc7 19.Bf3 Bc4 20.N1d2+= Be6 21.0–0 Ke7+= 22.Nd4 Rhc8 23.Ne6 fe6 24.Ne4 Be5 25.Rab1 Nf7 26.h4 Kf8 27.Bh5 Kg8 28.Ng5 Ng5+= 29.hg5 Bd6 30.Rb3 Bc5 31.Kg2 Rf8 32.f4 Rd7 33.e4 Rd2 34.Kh3 g6 35.Bf3 Rf7 36.e5 Ra2 37.Rb5 Bf8 38.Ra5 Ra3+= 39.Ra3 Ba3 40.Ra1 Bf8 41.Ra6+/– Re7 42.Bg4 Kf7+= 43.Kg2 h6 44.gh6 Bh6 45.Kf3 g5 46.Ke4+– gf4 47.gf4 Bg7 48.Rc6 Bh6 49.Bh5 Kg7 50.Bg4 Kf7+– 51.f5 ef5+= 52.Kf5 Be3 53.Bh5 Kg7 54.Rg6 Kf8 55.e6 Bd4 56.Rg4 Bc3 57.Re4 a5 58.Rc4+/– Bb4?? 59.Kf6+– Re8 60.Be8 Be7 61.Kg6 Ke8 62.Rc8 Bd8 63.Rd8! Kd8 64.Kf7 (64.Kf7 Kc7 65.e7+–) 1–0. AbstractPoetic (1635) – Santiang, internet, 2007.

5.Qd8 Nd8 6.a3 f6 7.e4 b6 8.Bc4 Bb7 (8...c6 9.Nf3=) 9.Nc3+= Ne7 (9...Nf7 10.Nf3+=) 10.Nb5+/– Be4? (better is 10...Kd7 11.Rd1 Kc8+/–) 11.f3+– Bc2? (11...Bc6 12.Nc7 Kd7 13.Na8 Ba8 14.Rd1 Kc7+–) 12.Nc7 Kd7 13.Na8 Ndc6 (13...Ba4 14.Rc1+–) 14.Rc1 Ba4 15.Ne2 b5 16.Bf7 Kc8 (16...Nf5 17.Be8! Ke8 18.Rc6+–) 17.Nc3 Kb7 18.Na4 ba4 19.Be8 g6 (19...Nb4 20.ab4 Ka8 21.Ba4+–) 20.Bc6 (20.Nc7 Kc7 21.Bc6 Bh6+–) 20...Nc6 21.Nc7! Kc7 22.b5 Bh6 (22...Kb6 23.Rc6 (worse is 23.bc6 Bc5+–) 23...Kb5 24.Rf6+–) 23.Rc6 (23.bc6?! Bc1 24.Bc1 Rb8+–) 23...Kb7 (23...Kd7 24.Rf6 Rb8 25.Rf7 Ke6 26.Rh7+–) 24.Ke2 (24.Rf6 Rc8 25.Kd1 Rc5+–) 24...Rd8 (24...Rc8 25.Bc1 Bg7 26.Rc8 Kc8 27.Be3+–) 25.Rd1 Rf8 (25...Rd1 26.Kd1 Bg5 27.g3+–) 26.Rd7 Kb8 27.Rcc7 Bf4 28.Rb7 Kc8 29.Rdc7 Kd8 30.Ra7 Bh2 31.Rh7 e4 32.Ra8 Bb8 33.Rb8# 1–0. Jamieson,Ian M – Armstrong,John M (1660), SCCA Premier, 2008.

5.Qd8 Nd8 6.a3 f6 7.e4 Bg4 8.h3 Be6 9.Nd2 a5 10.b5+= a4 11.Bd3 c6 12.c4 Nh6 13.Ngf3+= Bc5 14.Bc3 cb5 15.cb5 0–0 16.Nf1 f5 17.Ne5 fe4–/+ 18.Be4 Rf2 19.Rd1?? Ndf7?? 20.Nf7?? Nf7 21.Bd4 Bd4 22.Rd4 Rf4?? 23.Bh7!+– Kh7 24.Rf4 Ne5 25.Re4 Nd3 26.Ke2 Nc5 27.Re5 Bc4 28.Ke3 b6 29.Ng3 Bb5 30.Rb1 Bc6 31.Rb6 Nd7 32.Rh5 Kg6 33.Rc6 Kf7 34.Rc7 Rd8 35.Ne4 Kg6 36.g4 Nf6 37.Nf6 gf6 38.Rch7 Rg8 39.h4 Re8 40.Kf4 Rg8 41.R5h6# 1–0. unitedfan – aligarjon, ChessWorld.net, 2005.

4.de5 Ne5

5.Nd2 Nf6 6.e3 Bf5 7.Ngf3= Nc6 8.a3 d5 9.Bd3+= Bd3 10.cd3 Bd6 11.0–0 0–0 12.b5 Ne7 13.Bf6+/– gf6 14.Nd4 Kh8 15.Qh5 Ng6 16.f4 16...Rg8 17.Rf3 Qe7 18.Rh3+– Rg7 19.Nf5 Qf8 20.Ng7 Qg7 21.Qd5 Rb8 22.Nc4 Be7 23.Rc1 b6 24.f5 Rd8 25.Qe4 Ne5 26.d4 Nc4 27.Qe7 Rg8 28.Rg3 Qf8 29.Qf6 (29.Qf6 Rg7 30.Rc4+–) 1–0. pierre – Shakkimestari, ChessHere.com, 2006.

5.Be5 de5=+ 6.b5 Bf5 7.Nf3 Bd6 8.Nc3?? Bb4–+ 9.Qd2 Qd2 10.Nd2 Bc3 11.0–0–0 0–0–0 12.e3 Bd2 13.Rd2 Rd2 14.Kd2 Ne7 15.f3 Rd8 16.Bd3 Bd3 17.cd3 c6 18.bc6 Nc6 19.Rb1 f5 20.g3 Rd7 21.f4 g6 22.Rc1 e4 23.d4 Rd5 24.Rb1 (24.Kc3 Kd7–+) 0–1. bicycle – golly1, ChessWorld.net, 2007.

5.Nf3 Nf3 6.ef3 Be6 7.Bb5 c6 8.Bd3 Nf6 9.0–0 Be7 10.Re1 0–0 11.a3 d5 12.Qd2 a5 13.ba5 Qa5 14.Qa5 Ra5 15.Nd2 Rfa8 16.Rab1 b5 17.Nb3= Ra4 18.Nd4 Rd4 19.Bd4 Ra3 20.Ra1 Nd7? 21.f4+– Ra1 22.Ba1 c5? 23.f5 (23.f5 b4 24.fe6 fe6 25.Re6+–; 23.Bb5?! Bf6+–) 1–0. Fritz 10 – NN, 2006.

5.f4 Nc4 (6.Bd4 c5=+). alctay (1715) – jbumgar (1675), net–chess.com, 2009.

3.d4 ed4

4.Qd4 Be6 5.e3 Nd7 6.Bc4 Bc4 7.Qc4 Ngf6 8.Nc3 Be7 9.Rd1 0–0 10.Nf3 c6 11.e4 a5 12.a3 ab4 13.ab4 (worse is 13.Qb4 Re8–/+) 13...Qb6 14.0–0 Rac8 (14...Ne5 15.Ne5 de5 16.b5+=) 15.Na4 Qa7 16.Qb3 (16.Bf6!? Bf6 17.Nc3=) 16...Ne4+= 17.Rfe1 0–1. Schaper,Jan Erik – Scharf,Oliver, Schleswig Holstein–ch B, 2009.

4.Bd4 Bf5 5.Nd2 Be7?? 6.e4+– Bd7 7.Bg7 Bf6 8.Bh8 Ba1?? 9.Ba1 Nf6 10.Ngf3 Qe7 11.Bd3 d5 12.e5 Ng4 13.0–0 Be6 14.a3 Nd7 15.h3 Nh6 16.Bh7 Nf5 17.Bf5 Bf5 18.c4 dc4 19.Nc4 0–0–0 20.Qa4 a6 21.b5 Nc5 22.Qb4 ab5 23.Qb5 Bd3 24.Rc1 Bc4 25.Qc4 Nd3 26.Rc3 Ne5 27.Ne5 Qe5 28.Rc1 Qd5 29.Qc7# 1–0. chessdeviant (2255) – islanderfan (1845), net–chess.com, 2009.

4.Nf3 Nf6 5.a4 Nc6 6.b5 Nb4 7.Nd4 Be7 8.Nd2 a6 9.c3 Nbd5 10.e4 Nf4 11.Qf3 Ne6 12.ba6 Ra6? (better is 12...0–0!?+=). guest88 – guest1692, ICC, 2003.

4.Qd4 Nc6

5.Qc3 Nf6 6.Nf3 Be7 7.e3 Bd7 8.a3 0–0 9.b5 Nb8 10.Bd3 c6 11.a4 cb5 12.Ng5 ba4 13.Bh7 Kh8 14.e4 Qc8–+ 15.Qd3? Nh7 16.Nh7 Kh7 17.e5 Bf5 18.Qe3 Qc2 19.Bc3 Nc6 20.ed6 Bd6 21.0–0 g6 22.Rc1 Qe4 23.Qd2 Bf4 24.Qd1 Bc1 25.Qc1 Rad8 26.Nd2 Nd4 27.Bd4 Qd4 28.Nf3 Qd5 29.h3 b5 30.Ng5 Kg7 31.h4 f6 32.Nf3 Bg4 33.Nh2 f5 34.Qf4 Qd4 35.Qg5 Qa1 36.Nf1 Be2 37.h5 Qf1 38.Kh2 Bh5 (38...Bh5 39.Qf4 Rd1 40.Kg3 Rd3 41.Kh2 Bf3 42.Qe5 Kf7 43.Qc7 Ke6 44.Qf7 Rf7 45.gf3 Qf2 46.Kh3 Rf3#) 0–1. dennism (2150) – matof (2175), net–chess.com, 2008.

5.Qd2 a6 6.f4? (better is 6.Nf3+=) 6...Nf6–+ 7.c4 Bf5 8.b5? (better is 8.a3!? g6 9.Nc3–/+) 8...ab5 9.cb5 Ne4 10.Qd3? (better is 10.Qd1 d5 11.Nf3–+) 10...Nb4 11.Qb3 c5 (11...d5 12.a3 Qe7 13.ab4 Qb4 14.Qb4 Bb4 15.Kd1 Nf2 16.Kc1–+) 12.bc6 (12.a3 Be6 13.Qf3 Nc2 14.Kd1 Bf5–+ (14...Na1?! 15.Qe4 d5 16.Qe5–+)) 12...Nc6 (better is 12...Qa5 13.Nd2 bc6–+) 13.Nf3 Qa5 14.Nc3 Qb4 (14...d5 15.Rd1 0–0–0–+) 15.e3 (better is 15.Qb4 Nb4 16.Nd4 Nc3 17.Bc3=) 15...Be6?? (better is 15...d5+=) 16.Qb4+– Nb4 17.Bb5 Kd8 18.Ne4 Nc2 19.Kf2 Na1 20.Ra1 Ra2 21.Ra2 Ba2 22.Nc3 Bb3 23.f5 f6? 24.e4 d5 25.ed5 Bc5+/– 26.Ke2 Bc2 27.g4 h5 28.g5 Bf5 29.gf6 gf6 30.Na4 Rg8 31.Bf6 Be7 32.Bd4 Be4 33.Nc3+– Rg2 34.Ke3 Bf3 35.Kf3 Rh2 36.Be5 Rb2? 37.Bf1?? Rb3+= 38.Ke4 h4 39.Bh3 b5 40.Be6 Rb4? 41.Kf5 h3 42.d6 Bh4?? 43.Nd5?? Rd4?? 44.Bd4 h2 45.Bb6 Ke8 46.Nc7 Kf8+– 47.Bd5 b4 48.Bd4 Bg3 49.Ne6 Ke8 50.Bc6 Kf7 51.d7 Bh4 52.Ng5 1–0. Renkine,Ivan (1820) – Marquez,Andres, General Madariaga ARG, Open, 2014.

5.Qd2 Be6 6.Nf3= Nf6 7.a3 Be7 8.b5 Nb8 9.e3 0–0 10.Bd3= h6 11.Nd4 Nbd7 12.Ne6 fe6 13.0–0 Nc5 14.Nc3 Qe8 15.a4 Qh5 16.h3 Rad8 17.Be2 Qg6 18.Bf3 d5=+ 19.Qe2 Bd6 20.Ba3 Nce4 21.Be4= Ne4 22.Ne4 Qe4 23.Bb2 Be5 24.Be5= Qe5 25.Qd3 Rf7 26.Qd4 Qd4 27.ed4 Rf4 28.c3 Re4 29.Ra2 g5 30.Rc2 Rd7 31.f3 Rf4 32.Re1 Kf7 33.Kf2 Ke7 34.g3 Rf5 35.Rce2 Rf6 36.a5 Kd6 37.Kg2 Re7 38.Re3 Kd7 39.Rh1 Rg7 40.g4 h5 41.h4+= hg4 42.fg4 gh4 43.Rh4 c6 44.bc6 Kc6 45.Rf3 Rfg6=+ 46.Kg3 Kb5 47.Rf1 Ka5 48.Rf4? Kb5 49.Rh5 a5 50.Kh4? a4 51.g5 Kc4 52.Rh6 a3 53.Rg6 Rg6 54.Rf6 a2 55.Rg6 a1Q 56.Re6 Qc3 57.g6 Qd4 58.Kg5 Qg1 59.Kf6 d4 60.g7 Qf2 61.Ke7 Qg3 62.Kf7 Qc7 63.Re7 Qf4 64.Ke8 Qb8 65.Kf7= b5 66.g8Q+= Qg8 67.Kg8 d3 68.Rc7 Kd4 69.Rd7 Kc3 70.Rc7 Kb3 71.Rd7 ˝–˝. Ivanets,V (2265) – Blaushtain,B (2135), ch–Euro Senior, 2006.

5.Qd2 Nf6 6.b5 Ne5 7.e3 Be6 8.Nf3 Nc4 (8...Nf3 9.gf3 g6 10.Nc3+=) 9.Bc4= Bc4 10.Na3 Be6 11.Nd4 (11.0–0 Be7=) 11...Bd7 (11...d5 12.0–0+=) 12.0–0= Be7 13.Qd3 (13.Nc4 d5 14.Na5 Qc8=) 13...Qc8 (13...a6!?+=) 14.e4 0–0 15.Nc4 d5 16.ed5 Nd5 17.a4 (17.Rfe1 Re8+=) 17...Bf6 18.Nf3 Bb2 19.Nb2 c6 20.c4 Bf5 21.Qb3 Nf4 22.Nd4 (22.Rfe1 Rd8=) 22...Bg6 (better is 22...Rd8!? 23.Nf5 Qf5–/+) 23.Qf3= Ne6 24.Ne6 Qe6 25.Rfe1 Qc8 (25...Qd7 26.Nd1=) 26.Qh3 (26.Re7 Re8 27.Qe3 f6=) 26...Re8 (26...Qh3 27.gh3 f6 28.Kg2+=) 27.Re3 (27.Qc8 Rac8 28.bc6 bc6=) 27...Re3 (27...Qh3!? 28.gh3 Re3 29.fe3 Kf8–/+) 28.Qe3= Qe8 29.Qc3 h6 30.Re1 Qd7 31.Qe3 cb5 32.ab5 a6 (32...b6 33.Rd1 Qc7 34.h3+=) 33.Rd1 ˝–˝. Ivanets,Vladimir (2240) – Abramov,Alexander (2225), Ugra cup – Open B, 2008.

5.Qd2 Nf6 6.Nf3 =+.

5.Qe3 Be6 6.a3 Nf6 7.Nf3 Be7 8.b5 Ne5 (8...Na5!?+=) 9.Ne5+= de5 10.Qe5 (10.Be5? Ng4 11.Qe4 Ne5 12.Qb7 Bf6–+) 10...0–0 11.e3 Bd6 12.Qg5 h6 13.Qh4 Be7 14.Qd4 Qd4 15.Bd4 c5 16.bc6 bc6 17.Nd2 c5 18.Be5 Rfd8 19.Bb5 Ng4 20.Bg3 Bf6 21.Rd1 Bc3 22.Ke2 Bd5 23.e4 Bb7 24.Nc4 Nf6 25.f3 Nh5 26.Bc7 Rd1 27.Rd1 g5 28.Rd7 a6 29.Ba4 a5 (29...Rf8 30.Kd3 Bg7 31.Bd6+–) 30.Kd3 Be1 31.g4 Nf6 32.Re7 Ba6 33.Bc6 Rf8 34.e5 (34.e5 Nh7 35.Bd6+–) 1–0. Degterev,Pavel (1685) – Cuomo,Salvatore, CFriend SL–2005–0–00028 email, 2005.

5.Qe3 Be6 6.b5 Ne5 =+.

5.Qe3 Qe7 6.Qb3 Be6 7.c4= 0–0–0 8.e3 a6 9.Nf3 Kb8 10.Be2 Nf6 11.Nd4 Nd4= 12.Bd4 d5 13.c5 h6 14.a3 Ne4 15.c6 bc6 16.Bc5?? d4?? 17.Be7+– Bb3 18.Bd8 de3 19.fe3 Bd6 20.0–0?? Rd8 21.Rf7?? g5 22.Re7?? Be7–+ 23.Ba6 Ka7 24.Be2 Bd1 25.Kf1 Be2 26.Ke2 c5 27.b5 c4 28.Kf3 Nc5 29.a4 Bf6 30.Ra2 c3 31.a5 Rb8 32.b6? cb6 33.ab6 Kb6 34.Na3 Kc6 35.Nc4 Rf8 36.Ke2 Ne4 37.Na5 Kb5 38.Nb3 Kb4 39.Na1 Nd2 40.Rc2 Nb3 41.Nb3 Kb3 42.Rc1 Kb2 43.Rd1 c2 44.Rd2 0–1. pinecrest1981 – TimtheEnchater, Caissa.com, 2004.

5.Qe3 Qe7 6.Qf3 Nf6 7.Nc3 a6 8.Nd5 Nd5–+ 9.Qd5 Be6 10.Qe4? 0–0–0 11.b5 ab5 12.a4 ba4 13.Qa4 Kd7 14.Qb5 Ke8 15.Qb7= Bc8?? 16.Qc6+– Qd7 17.Qe4 Qe6 18.Qb4 f6 19.e3 Be7 20.Bb5 Bd7 21.Bd7 Qd7 22.Qc4 d5 23.Qb3 h5 24.h4 c6 25.Nf3 g6 26.0–0–0 Kf7 27.Nd4 Rb8 28.Qc3 Rhc8 29.Kd2?? Bb4–+ 30.Qb4 Rb4 31.Rb1 Rbb8 32.Ke2 c5 33.Nb3 f5 34.Rhd1 c4 35.Nd4 c3 36.Ba3 Rb1 37.Rb1 Re8 38.Nb5 f4 39.Nd6 Kg8 40.Ne8 Qe8 41.Bd6? fe3 42.Rb8+– ef2 43.Re8 Kf7 44.Kf2 Ke8 45.Ke3 Kd7 46.Bf4 Ke6 47.Kd4 Kf5 48.g3 Ke6 49.Kc3 Kf5 50.Kd4 Ke6 51.c4 dc4 52.Kc4 Kf5 53.Kd4 Kg4 54.Ke4 1–0. West Islander – Gary_Seven, ChessWorld.net, 2009.

5.Qe3 Qe7 6.Qf4 =+.

5.Qe4 Be6 6.b5 Nf6 =+.

5.Qe4 Qe7 6.Qe7 Nce7 7.e4 Be6 8.f4 f5 9.Bd3 fe4 10.Be4 Bd5 11.Nd2 0–0–0 12.c4 Be4=+ 13.Ne4 d5 14.Ng5+= Nh6 15.c5 d4 16.Ne6 Rd5 17.Nf8?? Rf8=+ 18.g3 g6 19.Rd1 Nhf5 20.Ne2=+ d3 21.Nc3 Rd7 22.Nb5 Kb8 23.Bc1 Rfd8 24.Rf1 Ne3?? 25.Be3+– Nd5 26.Bd4 a6 27.Nc3 Nb4 28.Be5 d2 29.Ke2 Nd3 30.Bf6 Re8 31.Kf3 Ne1 32.Kg4 h5?? 33.Kh3 Nf3?? 34.Rf3 Re1 35.f5 g5 36.Bg5 (36…Rd1 37.Nd1+–) 1–0. rum – garri, Live Game Caissa's Web, 2004.

5.Qe4 Be7?? 6.Bg7+– d5 7.Qe3 d4 8.Qe4 f5 9.Qf3 Bf6 10.Qh5 Ke7 11.Bh8 Bh8 12.Qh7 Kf8 13.Qh8 Nb4 14.Kd1 Be6 15.a3 Nd5 16.Nf3 Nc3 17.Ke1 c5 18.Qe5 Qe7 19.Nc3 dc3 20.Rd1 c4 21.Qc3 Nf6 22.Qe5 Ng4 23.Qh8 Bg8 24.h3 Nf6 25.Nh4 Qe6 26.g4! f4 27.Qh6 Ke8 28.Qf4 Qb6 29.Bg2 Qa5 30.Rd2 Nd5 31.Bd5 (31.Bd5 Bd5 32.Qe5 Kd7 33.Nf5+–) 1–0. dearwish (2565) – geldridge (2345), net–chess.com, 2004.

5.Qf4 a5 6.b5 Nb4 =+.

5.Qf4 d5 6.a3 Be6 =.

5.Qf4 Nge7 6.b5 Ng6 7.Qe3 Nce7 8.Nc3 Be6 9.Nf3 Nf5 10.Qd2 Ne5=+ 11.0–0–0 Nc4 12.Qf4 g6 13.g4= Bh6 14.g5 Bg7 15.Ba1 a6 16.e4 Ne7 17.Bc4 Bc4 18.b6 Ba2 19.e5 Be6 20.ed6 cd6 21.Nb5 ab5 22.Rd6?? Ra1–+ 23.Kd2 Qc8 (24.Ra1 Qc3 25.Kd1 Qa1 26.Qc1 Bd5 27.Rd5 Qc1 28.Kc1 Nd5–+) 0–1. Valade,Patrick – Goguillon,Fabrice, AJEC Partie Lib, 1997.

4.Qd4 Nf6

5.Nd2 Nc6 6.Qf4 =+.

5.Nd2 Be7 6.e4 0–0 7.c4 b6 8.b5= Bb7 9.f3 Nbd7 10.Qd3 Re8 11.0–0–0 Bf8 12.Qc2 g6 13.Bd3 Bg7 14.Ne2 a6–/+ 15.a4 Nc5 16.Nc3 Qd7 17.Nb3 Nb3 18.Qb3=+ a5 19.Kb1 Rac8 20.Rhe1 Re7 21.Ne2 Rce8 22.Bc3 h6 23.g4 Nh7 24.h4 Bc3 25.Nc3 Nf6 26.Rg1 Nh7 27.Rg3 Qe6 28.Rdg1 Qe5 29.Ne2 Nf6 30.Qc3 Qc3 31.Nc3+= Nd7 32.g5 h5 33.Kc2 Nc5 34.Re1 Kg7 35.Rg2 Ne6 36.Ne2 Nc5 37.Ra1?? Nd7?? 38.Rg3 Nc5 39.Nc3 Kf8 40.Rd1 Kg7 (40...Re5 41.Kd2+=). Guillen Domenech,Antonio – Gimenez Ferrer,Alex, Cullera op–B, 2004.

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.d4 ed4 5.Qd4).

5.Qe3 Qe7 6.Qe7 Be7 7.Nf3 =+.

5.Qe3 Be7 6.Bf6= gf6 7.Qg3 Nc6 8.Qg7 Rf8 9.b5? Ne5?? 10.Qh7 Bd7 11.a4 c6 12.e3 Qa5 13.Nd2 cb5 14.Ngf3 0–0–0 15.Be2 Rh8 16.Qe4 Ng4?? 17.0–0 Nh2? 18.Nh2 Qd2 19.Bb5?? Bb5?? 20.ab5+– Rde8 21.Ra7 Bd8?? 22.Qb7# 1–0. eds – cip83, Live Game Caissa's Web, 2004.

5.e4 Nc6 6.Bb5 Bd7 7.Bc6 Bc6 8.Nd2 Qd7 9.Ne2 Be7 10.a4 Qg4 11.Ng3= 0–0 12.0–0 Rfd8 13.Nf5 Bf8 14.f3 Qg6= 15.Nh4 Qg5=+ 16.Qf2 Ne8 17.Nc4 Bd7 18.Ne3= g6 19.f4 Qe7 20.e5 Bg7 21.f5 Be5 22.Nd5+= Qf8 23.Be5 de5 24.fg6 Be6 25.Qg3 Qg7 26.gf7 Bf7+= 27.Ne7 Kf8 (28.Qe3 Nd6+/–; 27...Kh8 28.Qe3 Be6 29.Nhf5+/–). Tappenbeck – Leimkuehler,Dirk, Sueder Sommer op, 1996.

5.Nf3 Be7 6.e3 0–0 7.Bd3 d5 8.a3 Re8 9.0–0 Nbd7 10.c4 c5 11.Qc3 Nb6 12.bc5 Na4 13.Qc2 Nb2 14.Qb2 dc4 15.Bc4 Bc5 16.Nc3 Qe7 17.Ng5 Rf8 18.Qc2 g6 19.Rfe1 b6 20.Nd5 Nd5 21.Bd5 Bb7 22.Bb7= Qb7 23.a4 Qe7 24.Nf3 Rac8 25.Rec1 Rfd8 26.Qb3 Rc7 27.Rd1 Rcd7 28.Rd7 Qd7 29.Kf1 Qd3 30.Qd3 Rd3 31.Ke2 Rd6 32.Ne5 Rd8 33.Nc6 Rd7 34.Rd1 Rc7 35.Nd4 Be7 36.Nb5 Rb7 37.Rc1 Bc5 38.Nd4 Kg7 39.Kd3 Rd7 40.Rc4 Kf6 41.h4 Bd4 42.ed4+= Ke6 43.g4 Rd5 44.g5 Rf5 45.Ke3 Kd7 46.f4 f6 47.Rc1 Ra5 48.gf6 Rf5 49.Ke4 Rf6 50.h5 Re6 51.Kf3 Rd6 52.Rd1 Rd5 53.hg6+= hg6 54.Ke4 Ra5 55.Rg1 Ra4 56.Rg6 b5 57.Ke5 b4 58.Rg7 Ke8 59.Rb7 a5 60.d5 Ra3 61.f5 Re3 62.Kd4 Rf3 63.Ke4 Rc3 64.f6 Rc1 65.f7 Kf8 66.d6 Rd1 67.d7 b3 68.Rb8 Kf7 69.d8Q (69.d8Q Rd8 70.Rd8+–) 1–0. Ivanets,Vladimir (2290) – Lippmann,Ulrich (2075), EU–ch Seniors, 2005.

4.Bd4 Nc6

5.a3 Nd4–/+ 6.Qd4 Be7 7.c3 Nf6 8.e4 0–0 9.Be2 Bd7 10.Nf3–/+ Re8 11.0–0 Bf8 12.Bd3 g6 13.Bc2 Bg7–+ 14.Qd1 Ne4 15.Be4 Re4 16.Re1 Re1 17.Qe1 Bg4 18.Nd4 Qd7 19.f3 Re8 20.Qh4 Be6 21.Nd2 c5 22.Ne6 Qe6 23.Ne4 d5 24.Ng5 Qe3 25.Kh1 Bh6 26.Nh3 Qc3 27.Rf1 Bg7 28.Ng5 h6 29.Nh3 cb4 30.ab4 g5 31.Qg4 Re7 32.f4 Qc4 33.Rd1 Rc7 34.Qf5 Qe4 35.Qd5 Qd5 36.Rd5 Rc1 37.Ng1 gf4 38.h3 Bf8 39.Kh2 Bb4 40.Rb5 Bd6 41.Nf3 b6 42.h4 Bc5 43.Kh3 h5 44.Kh2 a5 45.Rb2 a4 46.Nd2 Bg1 47.Kh3 Rc3 48.Nf3 a3 49.Ra2 b5 50.Ra1 Bc5 51.Kh2 b4 0–1. mic (2135) – rzens (2335), net–chess.com, 2007.

5.a3 Be6 6.Nf3= a6 7.e4 h6 8.Bb2 Nge7 9.c4 Ng6= 10.Qc2 Nce5 11.Be5 de5 12.Nc3 Be7 13.Rd1+= Qc8 14.Be2 b6 15.0–0 0–0 16.Rd2 c5 17.b5 ab5= 18.cb5 Ra3=+ 19.Rb1 Ra7 20.Nd5 Bd5–/+ 21.ed5 Bd6 22.g3 Ne7 23.Kg2 Nf5 24.Bd3 Nd4 25.Nd4 ed4 26.Bc4 Re8 27.Qd3 Qg4 28.h3 Qg5 29.Rbb2 Ra1 30.Ba2?? Rae1 31.Bb1?? Qd5 32.f3 g6 33.Ba2 Qg5 34.f4 Bf4 35.Rf2 R1e3 36.Qe3 Re3 (36...Re3 37.Bf7 Kg7–+) 0–1. mic (2225) – zekota (2280), net–chess.com, 2008.

5.a3 Nf6 6.Bb2=+ Ne4 7.Nf3= Bg4 8.e3 Ne5 9.Be2 Nf3 10.Bf3 Bf3= 11.Qf3 d5 12.0–0 Bd6 13.Bg7 Rg8+= 14.Bc3 Qg5 15.a4?? 0–0–0?? 16.Be1?? h5 17.h3?? h4 18.Nd2?? Bb4 19.Ne4+= de4 20.Qe4 Rde8 21.Qf3 Bc5 22.Rb1+/– c6 23.a5 f5? 24.a6+– Bb6 25.ab7 Kb7 26.Ba5 Kc7 27.Bb6 ab6 28.c4 Re6 29.Ra1 Kb7? 30.Rfd1 Reg6+/– 31.Rd7 Kc8 32.Raa7 Qg2 33.Qg2 Rg2 34.Kf1 Rh2 35.Rac7 Kb8+/– 36.Ke2 Rh3? 37.Rc6+/– Re8 38.Rb6+– Kc8 39.Rbb7 f4? 40.Rbc7 ˝–˝. alaamattar (2280) – peonconorejas (2045), net–chess.com, 2008.

5.a3 Qh4 6.Nf3= Qf4 7.e3+= Qh6 8.h4 Bg4 9.Nc3 0–0–0 10.g3?? Ne5?? 11.Be2 Qh5? 12.Ne5+/– Be2 13.Qe2 Qe2 14.Ne2 de5 15.Ba7?? b6–/+ 16.Nc3 Ne7 17.Nb5 Nc6 18.0–0 Kb7 19.Bb6 Kb6 20.Nc3 g6 21.b5 Na5 22.a4 Bg7 23.Rad1 f5 24.e4 h6 25.Nd5 Kc5 26.f3?? Rd7=+ 27.Rd3 Nc4–/+ 28.Rb1 Nb6?? 29.Rc3+– Nc4 30.Rb4 Rd5 31.Rbc4 Kd6 32.Rc6 Ke7 33.ed5 Rg8 34.Rc7 Kd6 35.R3c6 Kd5 36.Rd7# 1–0. SIRMO – jammboy, ChessWorld.net, 2006.

5.b5 Nd4–/+ 6.Qd4 Be7 7.Nc3 Bf6 8.Qd2 Be6 9.Rd1 a6 10.a4 ab5 11.ab5 Ra3 12.Ne4 d5 13.Nf6 Nf6 14.e3 Ne4 15.Qb4 Qh4–+ 16.g3 Qf6 17.f3 Re3 18.Be2 Nc3 19.Rd3 Qe5 (19...Qe5 20.Re3 Qe3–+) 0–1. Wartig,Wolfgang – Janiesch, corr, 1992.

5.b5 Nd4 6.Qd4 Bf5 7.e4 c5?? 8.Qd5?? Bc8 9.Bd3 Nf6=+ 10.Qb3 b6 11.Nf3 Be7 12.e5 (12.e5 Be6 13.Bc4=+). TeaCzar – alexson, ChessWorld.net, 2009.

5.c3 b6 6.e3 Bb7 7.Bc4?? Nd4–+ 8.Qh5? g6 9.Qd1 Bg2 10.Qd4 Nf6 11.Bb5 Nd7 12.Qh8–/+ Bh1 13.Bc4? Qe7 14.Na3 Nf6 15.Bb5 Nd7 16.Qh7 0–0–0 17.Qh3 Bg7 18.Rc1 a6 19.Ba6=+ Kb8 20.Ne2 Ne5 21.Kd2 Nf3 22.Kc2 Qe4 23.Kb2?? Ne5 24.Ng3?? Nd3–+ 25.Kb1 Nf2 26.Bd3 Qd3 27.Nc2 Nh3 28.Rh1 Qc2 29.Kc2 Re8 30.Rf1 Re3 31.Nh1 (31…Rc3 32.Kb1–+; 31.Rf7 Rc3 32.Kb1 Be5–+). IkkeIkke97 – nyubocs, playchess.de, 2003.

5.c3 Nd4 6.Qd4 Nf6 7.Nf3 Bg4 8.Ng5 Bf5 9.e3=+ Bb1 10.Rb1= Be7 11.Bc4 0–0 12.Bd3 h6 13.h4 Nh5 14.Qe4 g6?? 15.Qd4?? Bg5?? 16.hg5= Qg5 17.g4 Nf6 18.f3 Rfe8–/+ 19.e4? Re5 20.Ke2 Ng4?? 21.Rhg1?? Qe3?? 22.Qe3+– Ne3 23.Ke3 Rh5 24.a4 Re8 25.b5 b6 26.c4 f5? 27.Rg6 Kf7 28.Rbg1 fe4 29.Rg7 Kf8 30.Rg8 Kf7 31.R8g7 Ke6?? 32.R1g6+– Ke5 33.f4 Kf5 34.Rg3?? ed3–/+ 35.Kd3 Rh4?? 36.Rf7+/– Ke6 37.Rc7 d5 38.Re3 Kd6 39.Rc6 Kd7 40.Re8 Ke8 41.cd5 Rf4 42.Rh6 Ra4 43.d6 Ra3 44.Kc4= Ra4 45.Kd5+/– Ra5?? 46.Kc6 a6 47.d7 Kd8 48.Rh8 Ke7 49.d8Q (49.d8Q Ke6 50.Rf8 Rb5 51.Qd6#) 1–0. karlsdad – PolitePredator, ChessWorld.net, 2011.

5.Bc3 a5 6.b5 Nce7 7.a4 c6 8.e3 cb5 9.Bb5+/– Bd7 10.Bd7 Qd7 11.Nf3 Nd5?? 12.Bd2 Ngf6 13.0–0 Be7 14.c4 Nc7 15.Nc3 0–0 16.e4 Rfe8 17.Re1 Qg4 18.e5 de5=+ 19.Ne5 Qd4 20.Nf3 Qa7 21.Nd5 Nfd5 22.cd5 Nd5 23.Rb1 Rad8 24.Qc2 Nb4 25.Bb4=+ Bb4 26.Re8 Re8 27.Rd1 Qa6–/+ 28.Ng5 g6 29.Qb3 Qe6?? 30.Ne6+– (30.Ne6 Re6 31.g4+–) 1–0. badboy1221 – disaster, Live Game Caissa's Web, 2006.

5.Bc3 Bf5 6.Nf3 Nf6 7.e3 Be7 8.Bc4 0–0 9.0–0 d5 10.b5 dc4 11.bc6 bc6 12.Nd4 Be4 13.Nd2 Bd5 14.Qe2 c5 15.Nf5 Ne4?? 16.Ne7?? Qe7 17.Ne4 Qe4 18.f3 Qe7 19.e4 f5 20.e5 Rab8 21.Rad1 Be6 22.f4 Rb6 23.a4 a6 24.a5 Rb7 25.Rf3 Rd8 26.Rdf1 Rdb8 27.Rg3 Rb1 28.h3 Qh4 29.Kh2 Rf1 30.Qf1 Kf7 31.Be1 Rb1 32.Qf2 Re1?? 33.Rg7 Kg7 34.Qh4 Re2 35.Qf6 Kg8 1–0. Wartig,Wolfgang – Schenk, Ilmenauer SV eV., 2001.

5.Bc3 Nf6 6.b5 Ne7 7.Bf6 gf6 8.Nc3 Bg7 9.e3 f5 10.Nge2 Be6 11.a3 0–0 12.Qd3 Ng6 13.Rb1 Ne5 14.Qd1 Qh4 15.Nd5 Rac8 16.Rb4 Qd8 17.Ra4 c6 18.bc6 bc6 19.Ndf4 Qc7 20.Nd4 Bd7 21.c3 c5 22.Nb5 Bb5 23.Bb5+/– Ng6 24.Nd5+– Qb7 25.c4 Rfe8? 26.Ba6 1–0. Fritz 8 – NN, 2003.

5.Bc3= Nf6 6.e3 a6 7.Bd3 Ne5 8.Be2 b6 9.Nf3 Nf3 10.Bf3 Rb8 11.0–0 Bb7 12.Bb7+/– Rb7 13.Qf3 Rb8 14.Bf6+/– Qf6 15.Qc6 Kd8 16.Nc3 Qe6 17.b5 Qd7+= 18.Qd5 ab5= 19.Rfb1 c6 20.Qf3 Kc7 21.a4+= ba4 22.Na4 b5= 23.Nc3 Kd8 24.Ne4 f6 25.Ra6 Be7 26.Rba1 Ke8 27.Ng3 Rc8+= 28.Qe4 Kf7 29.Nf5 Rhe8?? 30.Qg4+– Bf8 31.Nh6! Ke7 32.Ng8 Kd8+= 33.Qb4?? d5–/+ 34.Qh4 h6 35.Ra8–/+ Bd6 36.R1a7 Bc7 37.Nf6–/+ gf6 38.Qf6 Qe7?? 39.Rc8 Kc8 40.Qc6 Kd8 41.Ra8 Bb8 42.Rb8# 1–0. AbstractPoetic (1645) – ambaradann, internet, 2007.

5.Bc3 Nf6 6.e3 Be7 7.Nf3 0–0 8.Bd3 Nd5 9.a3 Nc3 10.Nc3 Re8 11.0–0 Ne5 12.Ne5+= de5 13.Qh5 g6= 14.Qe2 c5 15.Rfd1+= Qc7 16.Nd5+/– Qc6?? 17.Ne7 Re7= 18.f3 Be6 19.b5 Qc7 20.e4?? c4–+ 21.a4 cd3 22.cd3 Qc5 23.Kh1 Rc8 24.Qd2 Rec7 25.h3 Qd4 26.Kh2 Rc2 27.Qg5 Kg7 28.Qg3 R8c3 0–1. mic (2100) – yetzaline (2105), net–chess.com, 2007.

4.Bd4 Nf6

5.a3 Be7 6.Nf3 0–0 7.e3 Be6 8.Bd3 h6 9.Bb2 Nbd7 10.0–0 Ng4 (10...d5 11.Nd4=) 11.Nd4 Nge5 12.Ne6 fe6 13.Be2 Nf6 (13...Nb6!?=) 14.Nc3 d5 15.Kh1 (15.Nd5 Nd5 16.Be5 Bf6+/–) 15...c6 16.Na4 (better is 16.Nd5 Qd5 17.Qd5 ed5 18.Be5+=) 16...b6?? (16...Nc4 17.Bc4 dc4 18.Qe2=) 17.Qb1 (better is 17.Be5 Bd6 18.Bd6 Qd6 19.f4+–) 17...Qc7 18.f4 Ned7 (18...Nf7 19.Qd1=) 19.c4 dc4 (19...Ne4 20.Qc2+=) 20.Bc4+= b5? (better is 20...Nd5!? 21.Nc3 Bf6+=) 21.Be6+– Kh8 22.Nc3 Nb6 23.Qc2 Rad8? (23...Nc4 24.Bc4 bc4+–) 24.Nb5! Qb7 (24...cb5 25.Qc7 Pinning (25.Qc7 Deflection; 25.Qc7 Clearance)) 25.Bf6 (better is 25.Nd4 Rfe8+–) 25...gf6?? (better is 25...Rf6 26.Nd4 Rd4 27.ed4 Re6+=) 26.Nd4+– Rd6 (26...f5 27.Nf5 Rf6+–) 27.Qg6 1–0. Ivanets,Vladimir (2240) – Amursakov,Vasily, Ugra cup – Open B, 2008.

5.Bb2 Be7 6.e3 Be6 7.Bb5 c6=+ 8.Ba4 b5–/+ 9.Bb3 0–0 10.Nf3 d5 11.0–0 Bb4–/+ 12.Ba3 Ba3–+ 13.Na3 Qd6 14.Nb1 a5 15.a4 b4 16.Qd3 Ne4 17.Nbd2 Nd2 18.Ng5 Nb3?? 19.Qh7# 1–0. retard – joelynnturner, internet, 2007.

5.b5 c6 6.bc6 bc6 7.e3 Be7=+ 8.Nf3 0–0 9.Bd3 Nbd7 10.0–0 Re8 11.c4 Nf8 12.Nbd2 Qc7 13.Qc2 h6 14.Rfc1 Ne6= 15.Bb2 Nc5 16.Bf1 Rb8 17.Nb3 Ne6 18.a4 Qb6 19.Nfd2 Ng4 20.a5 Qc7 21.h3 Nf6 22.g4 g5 23.Bg2+= Nf8 24.Qc3 Ng6 25.Ne4 Ne5= 26.f4 Ned7?? 27.fg5+/– hg5 28.Nbd2 Ne5+= 29.Ng5 Rb2 30.Qb2= Nd3 31.Qc2 Nc1= 32.Rc1 Kg7? 33.Rf1 Rh8? 34.Qc3 Qd7 35.Nge4 Qe6 36.g5 (36.g5 Bd8 37.c5+–) 1–0. katchum (2430) – carrafurca (2295), net–chess.com, 2007.

5.Nc3 Be6 6.e4 Be7 7.Nf3 0–0 8.Bd3 Bg4 9.h3 Bf3=+ 10.gf3 Nc6–/+ 11.Ne2 Nb4 12.Rg1 g6 13.Qd2 Nd3 14.cd3 Nh5 15.f4 c5–/+ 16.Bc3 d5 17.ed5 Qd5–+ 18.Ng3 Ng3 19.Rg3 Bh4 20.Rg4?? Rfe8 21.Kd1 Qf3 22.Kc1 Bf2 23.Be5 Qh3 24.Rg5 Be3 (24...Be3 25.Rg1 Bd2 26.Kd2 Rad8–+) 0–1. golly1 – Steve20, ChessWorld.net, 2007.

5.Nc3 Be7 +=.

5.c4 Be7 6.e3 (6.b5 a6–/+) 6...0–0 7.Bd3 (7.b5 c5 8.Bb2 a6–/+) 7...c5 8.Bc3 Nbd7 (8...cb4 9.Bb4 Na6 10.Bc3–/+) 9.b5 (9.Nf3–/+) 9...b6 (better is 9...Ne5!?–/+) 10.Qc2 Bb7 11.Ne2 (11.Nf3!?=) 11...Ne5–/+ 12.Be5 de5 13.Nbc3 e4?? (better is 13...Bg2 14.Rg1 Bb7–/+) 14.Ne4+= Be4 15.Be4 Ne4 16.Qe4 Re8 17.Rd1 Qc8 18.0–0 Bf6 19.Qf3 Qe6 20.Rd5 Rad8 21.Rfd1 Rd5 22.Rd5 Rd8 23.Nf4+– Qe8 24.Rf5?? Qe4!!–+ 25.Nd3 Qd3 26.h3 Qd1 27.Kh2 Qf3 28.gf3 Kf8 29.Kg3 Ke7 30.e4 g6 31.Rd5 Rd5 32.ed5 Kd6 33.f4 h6 34.h4 g5 35.fg5 hg5 36.h5 Bg7 37.f4 Bh6 38.f5?? Ke5 39.Kg4 f6 40.a3 Bf8 41.a4 Kd6 42.h6 Bh6 43.Kh5 Ke5 44.Kh6 g4 45.Kg6 g3 46.d6 Kd6 47.Kf6 g2 48.Kf7 g1Q 49.f6 Kd7 50.a5 ba5 51.Kf8 Ke6 52.f7 Qf2 (52...Qf2 53.Kg7 Qf7 54.Kh8 Kf6 55.b6 Qg7; 52...Qg6 53.Ke8 Qf7 54.Kd8 Qd7) 0–1. Couradin,Bruno (1660) – Gahagnon,Jacques, Montigny le Bretonneux op 1st, 2002.

5.Nd2 Nc6=+ 6.Bf6 Qf6–/+ 7.b5 Ne5 8.Ngf3 Nf3 9.ef3 Be7 10.Be2 b6 11.0–0=+ 0–0 12.Ne4 Qb2 13.Qc1 Qe5 14.Rb1 Qe6 15.c4 Bb7 16.Qc2 Rfb8 17.Ng3= Bf6 18.Qf5 Qe7 19.Bd3= g6 20.Qg4 d5 21.cd5+= Qa3 22.Bc4+/– Qc5 23.Ne4+– Qd6?? 24.Nd6 (24.Nd6 cd6 25.Qd7+–) 1–0. 73DADDELDU37 – Fuffy, mySchach.de, 2005.

5.Nd2 Be7 6.e4 0–0 7.Be2 c5 8.bc5 dc5 9.Be3 Nc6 10.c3 Ne5 11.Qc2 Be6 12.Rd1 Qc7 13.f3 Rfd8–/+ 14.Nh3 Bh3 15.gh3 Qc8 16.Bf1 Rd2 17.Bd2 Nf3–/+ 18.Kf2 Ne5 19.c4 Nh5 20.Rg1=+ Bh4 21.Ke2 Qe6–/+ 22.Rc1?? Rd8 23.Bg5? Bg5–+ 24.Rg5 Nf4 25.Ke3 Nh3 26.Re5?? Qh6 27.Ke2 Nf4 28.Kf3 Ne6= 29.Re6 fe6 30.h3 e5 31.Qc3= Qf4 32.Ke2 Qh2 33.Ke1 Qg1 34.Rc2+= Rd4 35.Qf3 Qg5 36.Bd3+/– Qh4 37.Rf2 Qe7 38.Be2 h6 39.Qf5 Qc7?? 40.Qf8 Kh7 41.Rf7 Qa5 42.Kf2 (42.Kf2 Qe1 43.Ke1 Rd1 44.Kd1 Kg6 45.Qg7) 1–0. lille – Patton, internet, 2007.

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.d4 ed4 5.Bd4).

5.e4 Ne4 6.Bd3 d5 7.b5 b6 8.f3? Nf6?? 9.Ne2 Bd6 10.Nd2 c5 11.Bb2 a6–+ 12.c4 d4 13.Ne4 Ne4 14.Be4 Ra7 15.a4 a5 16.Ng3 Re7 17.0–0 0–0 18.Re1 Bg3 19.hg3 Qd6 20.Qc2 f5 21.Bd5 Be6 22.f4? Bd5–+ 23.cd5 Re1 24.Re1 Qd5 25.Re5 Qd7 26.Qb3 Kh8 27.Rd5? Qe7 28.Re5 Qf6 29.Rc5?? bc5 (30.Bc1 Rc8–+) 0–1. edfdo – dumdago, Live Game Caissa's Web, 2004.

5.Nf3 Nc6 +=.

3.d4 d5

4.a3 a5 =.

4.a3 e4+= 5.c4 (5.e3 Bd6 6.c4 Nf6 7.Nc3+=; 5.Nd2 a5 6.b5 Be6 7.e3+=) 5...e3 6.cd5 ef2 7.Kf2 =.

4.de5 Bb4=+

5.c3 Bc5 6.Nf3 Ne7 7.Ba3 +=.

5.Bc3 Bc3 6.Nc3 d4 7.Nb5 Nc6 8.Nf3 Qe7 9.Nbd4 Ne5 10.c3 Nf3 11.gf3 Nf6 12.e4 0–0 13.Qc1? c5 14.Ne2–/+ Be6 15.Rg1 Kh8 16.Qg5= Rg8 17.Nf4 b6 18.Bd3 Qd7 19.e5 h6 20.Qh4 Nd5 21.Rg6?? Rge8 22.Rh6 gh6 23.Qh6 Kg8 24.Bh7 Kh8 25.Nh5?? f5–+ 26.Bf5 Kg8 27.0–0–0 Bf5 28.Rg1 (28...Bg4 29.Rg4 Qg4 30.fg4+–) 1–0. Chandran,T – Gala,Khushal, India7175 corr AICCF, 1997.

5.Bc3 Nc6 6.Bb4 Nb4 7.a3 =+.

5.Bc3 Be7 6.e3 Nh6 7.Nf3 +=.

5.Nd2 Be6 6.Ngf3 c5 7.c3 Ba5 8.e4 Nc6 9.ed5 Bd5 10.Bd3 Nge7 11.0–0 Ng6 (11...0–0!?=) 12.c4+= Be6 13.Ne4 Qc7 Can e5 get defended? 14.Nd6 Ke7 15.Be4 Rhd8 16.Bg6 hg6 17.Ng5 Bc4 18.Qf3 Bd2 19.Nge4 (19.Nc4?! Bg5 20.Nd6 Kf8=; 19.Ngf7?! Bf1 20.Nd8 Nd8 21.Rf1 Qb6+–) 19...Bd5 20.Rfd1 Qa5 21.Qd3 Be4 22.Qe4 Bh6 (22...Rd6 23.ed6 Kf8+–) 23.Qd5 (worse is 23.Nb7 Rd1 24.Rd1 Qb6+–) 23...Rd6 24.Qd6 (24.ed6?! Kf8+–) 24...Ke8 25.Qd7 Kf8 26.Qb7 (26.Qb7 Rb8 27.Qc6+–) 1–0. Kucharkowski,Jens (2000) – Dorn,Kirsten (2120), CiF, 2005.

5.Nd2 Ne7 6.c3 (6.e3 Bf5= (6...0–0 7.Ngf3=) 7.Ngf3=) 6...Ba5 (6...Bc5 7.Nb3+= (7.e4+=)) 7.Nb3 (7.e4 Nbc6+=) 7...c6 8.Nf3 Ng6 9.Na5 Qa5 10.e3 (10.Qd4 Be6+=) 10...Bg4 11.Qd4 Bf3 12.gf3 0–0 13.h4 (13.f4 Rd8+=) 13...Rd8 14.f4 h6 (14...c5 15.Qd2+=) 15.h5 c5 16.Qd2 Ne7 17.Rg1 c4 (17...Qb6 18.Qe2 Qe6 19.Qg4 Qg4 20.Rg4=) 18.Qd1 (18.Qe2 Kh8=) 18...Kh7 (18...Kh8 19.Qg4 Rg8 20.e4+=) 19.Qg4 (19.f5 Rg8= (19...Nf5? 20.Qg4 Qc7 21.Qf5 Kh8 22.0–0–0+–)) 19...Rg8 20.e4 Nbc6 (20...de4? 21.Bc4 Na6 22.Bf7+/–) 21.ed5 Qd5 22.Bg2 (22.Qg2 Qg2 23.Bg2 Rad8=) 22...Qc5 (22...Qa5 23.a3=) 23.Be4 (23.Rd1 Qb6 24.Bc1 Kh8=) 23...Kh8+= 24.Qe2 (24.Rd1 f5 25.ef6 gf6+=) 24...Rad8 25.Rg3 f6 (25...f5 26.Bg2=) 26.Bc2 (26.a4 fe5 27.Ba3 Qa5 28.Be7 Ne7 29.fe5 Qe5 30.Bb7 Qa5+=) 26...Rgf8 27.Qe4 f5 28.Qg2 Qa5 29.Rg7+= Rg8 30.Rg8 Rg8 31.Qh1 Nd5 32.0–0–0 Nf4 33.Kb1 Qe5 34.Re1 Qd6 35.Bf5 Rg5 36.Rd1 Qe7 37.Bc2 Qe2 38.Qh4 Qe5 39.a3 Qf6 40.Qh1 Rg7 41.Qe4+= Ne5 42.Bc1 Ned3 43.Qc4 Nc1 44.Kc1 Nh5 45.Qc8 Rg8 46.Qb7 Qf4 47.Kb2 Qb8 48.Qb4 a5 49.Qb8 Rb8 50.Kc1 Nf4 51.Rd7+– Rc8 52.Kd2 Re8 53.c4 Re5 54.Kc3 Ne2 55.Kd3 h5 56.Bd1 Nf4 57.Kd4 Re1 58.Bc2 Kg8 59.c5 Ne6 60.Kd5 h4 61.Bf5 Ng7 62.Bg4 Ne8 63.Be6 Kh8 64.Rf7 Ng7 65.Bg4 Kg8 66.Ra7 Ne8 67.Be6 Kf8 68.Rf7 Kg8 69.c6 Rd1 70.Kc5 Re1 71.Bc4 Rh1 72.Rd7 Kf8 73.Kb6 Rc1 74.Rf7 Kg8 75.Rf4 Kg7 76.Rh4 Nd6 77.Ba6 Ne8 78.Rf4 Rc3 79.a4 Rc2 80.Bb5 Nd6 81.Rd4 (81.Rd4 Nb5 82.ab5+–) 1–0. Ling,A J (2060) – Aymard,Michel (2010), corr ICCF WSTT/3/06/3, 2006.

3.d4 Nd7

4.Nc3 =.

4.de5 Be7?? 5.ed6+/– Bf6 6.dc7 Qe7 7.c3 Nb6 8.e3 Qc7 9.Bb5 Bd7 10.Bd7 Nd7 11.Nf3 0–0–0 12.0–0 Ne5 13.Nd4 Nc6 14.Qa4 Bd4? 15.cd4 Nf6 16.b5 Qa5 17.Qa5 Na5 18.Rc1 Kb8 19.Nd2 Nd5 20.Ne4 f6 21.Bc3 Nc3 22.Nc3 Rc8 23.Nd5 Nc4 24.Ne7 Rc7 25.Nd5?? Rcc8 26.Nb4 Rc7 27.d5 Rhc8 28.e4 h6 29.h4 g6 30.g4 g5 31.h5 Rc5? 32.a4+– Nd6? 33.Rc5 Rc5 34.Nd3 Rc3+/– 35.e5 Rd3= 36.ed6 Rd5 37.Re1 Rd6 38.Re8 Kc7 39.Rh8 Kb6? 40.Rh6+– Ka5 41.Rg6 Ka4 42.h6 Rd8 43.h7 Rh8+/– 44.Rg7 Kb5 45.Rb7+– Ka6 46.Rg7 Kb6+/– 47.Kg2 a5+= 48.Rf7 a4 49.f4 a3= 50.Rf6 Kb5 51.Rf5 Kb4 52.fg5 Rh7 53.g6 Rg7 54.Rf4 Kb3 55.Rf3 Kb2 56.Rf2 Kb1 57.Rf1 Kb2 58.Rf2 Kb1 59.Rf1 Kb2 60.Rf2 ˝–˝. pinecrest1981 – Patzer, Live Game Caissa's Web, 2004.

4.e4 Ngf6

5.Nc3 ed4 6.Qd4 c5 7.bc5 dc5 8.Qe3 Ne5 9.Qg3 Ng6 10.e5 Nd5?? (better is 10...Nd7 11.Nf3 Qa5+=) 11.0–0–0+– Be6 (11...Bd7 12.Nd5 Rc8+–) 12.Bb5 Ke7 13.Qg5 f6 14.Nd5 Bd5 (14...Kf7 15.ef6 Qd6+–) 15.ef6 gf6 (15...Kf7 16.Rd5 Bd6 17.Rd6 Qd6 18.fg7 Qe6+–) 16.Qf6# (16.Rd5?! fg5 17.Rd8 Rd8=; 16.Qd5 Qd5 17.Rd5 Bh6 18.Kb1 Rad8 19.Rd8 Rd8+–) 1–0. Degterev,Pavel (1685) – Sanchez Blanque,Antonio, CFriend SL–2005–0–00033 email, 2005.

5.Nc3 Be7 =.

5.Nd2 Qe7 =+.

5.Bd3 ed4 6.Bd4 Ne5 7.Ne2 Nd3 8.cd3 d5 9.Nd2 de4 10.de4 Be7 11.0–0 0–0 12.a3 b6 13.b5 (13.Qc2 c5 14.bc5 bc5=) 13...a6 14.a4 ab5 15.ab5 Bd7 16.Qb3 Be6 17.Qb2 Qd7 18.Nf4 Rfd8 19.Ra8 Ra8 20.Ne6 Qe6 21.Bf6 (21.Ra1 Ra1 22.Qa1 h6+=) 21...Bf6= 22.Qc2 Ra2 23.Qd3 Qd6 24.Qd6 cd6 25.Nc4 Bd4 26.Nd6 Rb2 27.g4 f6 28.Kg2 Bc5 29.Nf5 g6 30.Ng3 Rb5 31.Rd1 Rb2 32.Nh1 b5 33.Rd8 Kf7 34.Rd7 Be7 35.Ng3 Ke6 36.Rc7 b4 37.Nf1 (37.Kf3 Rb3 38.Kg2 Rc3 39.Rc3 bc3+=) 37...Bd6 38.Rc4 b3 39.Ne3?? (better is 39.Rc6 Kd7 40.Rc3–/+) 39...Rf2!!–+ 40.Kf2 b2 41.g5 b1Q 42.gf6 Bh2 43.Rc6 Kf7 44.Rc4 (44.Rc3 Qe4 45.Ra3 h5–+) 44...Bg1 45.Kf3 Qb3 46.Rc7 Kf6 47.e5 Ke6 (47...Ke6 48.Ke2 Qe3 49.Kd1 Qd3 50.Kc1 Bc5 51.Rc6 Kd5 52.Rc5 Kc5 53.Kb2 Kc4 54.e6 Qe2 55.Kc1 Kc3 56.e7 Qc2) 0–1. Ivanets,Vladimir (2265) – Mustafina,Dinara (1825), Khanty Mansiysk Governor Cup, 2007.

5.Nf3 c6 6.Bd3 Qc7 7.0–0+= Be7 8.de5 de5 9.a3 0–0 10.c4 Re8 11.Qb3 b6 12.Nbd2 Bd6 13.c5 bc5=+ 14.Bc4 Nf8 15.bc5 Bc5 16.Ng5 Ne6–/+ 17.Ndf3 Bd6 18.Rac1 h6 19.Ne6 Be6 20.Be6 Re6 21.Rc4 Rb8 22.Qc2 Qb6 23.Bc1 Bc7 24.Be3=+ Qb7 25.Rc1 Bb6 26.Bc5 Bc5 27.Rc5 Nd7 28.Rc4 c5 29.h3 Rb6 30.Ne1 Rb1 31.Nd3 Rc1 32.Qc1 Kh7 33.f3 Rc8 34.Qc3 f6 35.Kf2 Qb5 36.a4 Qb1 37.Nc5?? Rc5 38.Rc5 Qb6 39.Ke3 Qc5 40.Qc5 Nc5 41.a5 Nb7 0–1. Larsen,Hans Haagen – Danielsen,Heini (2165), Copenhagen AS04 Centenary, 2004.

5.Nf3 Ne4 6.Bd3 Nef6 7.Qe2 =+.

4.de5 de5=+

5.a3 Bd6 6.Nf3 Ngf6=+ 7.Nc3 0–0 8.e4 b6 9.Bd3 h6 10.Nb5 a6 11.Nd6+= cd6 12.0–0 Bb7 13.Re1 b5 14.c4 bc4= 15.Bc4 Ne4 16.Bd3 Ndf6 17.Qb3? Qb6 18.Re2? Nc5! 19.Qc2 Bf3 20.gf3?? Nd3–/+ 21.Qd3 Nh5 22.Bc1 f5 23.Be3 Qd8 24.Qd5 Kh8 25.Rd1 f4 26.Bc1 Qg5 27.Kf1 Rad8 28.Qe6 Qh4–/+ 29.h3 Nf6–+ 30.Ke1? Rfe8 31.Qf5 Qh5 32.Qh5=+ Nh5 33.Bb2 Kh7 34.Red2 Re6–/+ 35.Rd5 Nf6 36.Re5? Rde8?? 37.Re6+= Re6 38.Kf1 Kg6 39.Rd4 Kf5 40.Bc1 g5= 41.h4 d5 42.hg5 hg5 43.Bb2 Rd6 44.a4 Nd7 45.Ba3 Ne5 46.Kg2 Ke6=+ 47.b5 Rb6 48.Bc5= Rb7?? 49.ba6+– Rb8 50.Rb4 Rb4?? 51.Bb4 Nc6 52.Bc5 d4 53.Bd4! Kd5 54.Bf6 1–0. mic (2200) – geldridge (2340), net–chess.com, 2007.

5.a3 Ngf6 =+.

5.b5 Bb4 6.c3 Bd6 7.e4 Ngf6 8.Nd2 0–0 9.Ngf3 Nb6 10.Be2 Bc5 11.0–0 Qe7 12.c4 Bg4 13.a4 Rad8 14.Qe1?? Bb4–+ 15.a5 Bf3 16.Bf3 Nc4!! 17.Bc1 Bd2 18.Bd2 Rd2 19.b6 cb6 20.ab6 a6 21.Qc1 Rc8 22.Ra4 Nb6 23.Qd2 Na4 24.Ra1 Nc3 25.Rc1 Qb4 26.Rd1 Qe7 27.Rc1 Qc7 28.h3 b5 29.Qe3 b4 30.g4 b3 31.g5 Nd7 32.Bg4 b2 33.Bd7 bc1Q 34.Qc1 Qd7 35.Kh2–+ Ne4 36.f3 0–1. pinecrest1981 – raigod, Live Game Caissa's Web, 2005.

3.d4 e4

4.c4 d5 5.e3 Bb4–/+ 6.Nd2 c6 7.Qc2 Bd2 8.Qd2 Nf6 9.cd5 cd5 10.f3 0–0 11.Ne2 Nc6 12.Ng3 ef3 13.gf3 Bd7 14.Bd3 a6 15.0–0 b5 16.e4 Be6 17.e5=+ Nd7 18.Nf5 Bf5 19.Bf5 g6 20.Bh3 Qh4?? 21.Bd7+– Ne7 22.Ba3 Rfd8 23.Be7 Qe7 24.Bh3 Qa3 25.f4?? Qh3–/+ 26.a4 ba4 27.Qg2 (27.Ra4 Rdb8–/+) ˝–˝. Agilisaurus – Rickytan (1650), internet, 2007.

4.c4 e3 5.Nf3 ef2 6.Kf2 Bg4 7.e3 Nf6 8.Be2 Nbd7 9.h3 Ne4=+ 10.Kg1 Bh5 11.Nbd2 Ng3 12.Rh2 Nf6 13.Kf2 Nfe4=+ 14.Ne4 Ne4 15.Ke1 Be7 16.Qa4= Qd7 17.Qd7 Kd7 18.Bd3 f5 19.d5 Rhg8 20.Kd1 Bg5?? 21.g4+– fg4 22.hg4 Bg4 23.Be4 Be3 24.Ke2 Bf4 25.Kd3 Bf3= 26.Bf3?? Bh2–+ 27.Rh1 Be5 28.Be5 de5 29.Rh7 Ke7 30.Ke4 Kf6 31.Bg4? Rh8 32.Rh8 Rh8 (32...Rh8 33.Kf3 Kg5–+) 0–1. Wartig,Wolfgang – Hermann,HJ, corr SOK–90–55, 1990.

4.Nd2 f5 5.e3 d5 6.c4 Bb4 7.Qa4 Nc6 8.cd5 Qd5 9.Ne2 Bd2 10.Kd2 Bd7 11.Nf4 Qd6 12.Ba3 Qh6 13.Qb3 Nge7 14.Qb7 0–0 15.Bc4 Kh8 16.Qc7 Rfd8 17.Rab1 Rac8 18.Qd6+/– Qd6 19.Bd6+– Na5 20.Ba6 Rc6 21.Be7 Re8 22.Bb5 Rcc8 23.Bd7 Re7 24.Bc8 Nc4 25.Ke2 Na3 26.Rb3 Nc4 27.Bd7! g5 28.Rb8 Kg7 29.Nh5 Kh6 30.Nf6 Kg6 31.Nh7 Kh7 32.Bf5 Kg7 33.h4 g4 34.h5 Nd6 35.h6 Kf6 36.Bg4 Rh7 37.Rf8 Ke7 38.Rg8 Nf7 39.Rg7 Rh6 40.Rh6 (40...Kf8 41.Rhh7 Nh6 42.Ra7 Nf7 43.Rhf7 Ke8 44.a4 Kd8 45.Ra8#) 1–0. milkmaid – plinkon, Live Game Caissa's Web, 2004.

4.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.d4 e4).

4.d5 Bf5

5.e3 Nf6 6.c4 Be7 7.h3 0–0 8.g4 Bg6 9.Nd2 Nbd7 10.Ne2 Re8 11.Bg2 h6 12.g5 hg5 13.h4 gh4 14.Rh4? Nd5!–+ 15.cd5? Bh4 16.Nc4 Nf6 17.Nf4 Ng4 18.Ng6?? Nf2–+ 19.Nh4 Qh4 20.Qe2 Nd3 21.Kf1 Nb2 22.Nb2 Re5 23.Nd1 Rf5 24.Nf2 Re8 25.Ke1 Ree5 26.Kd2?? Rf2 27.Qf2 Qf2 28.Kc3 Qg2 29.Rd1 b5 30.a4 Qe2 31.Rd4 Qe3 32.Kb2 Qd4 33.Kc2 Qb4 34.ab5 Rd5 35.Kc1 Qb5 36.Kc2 e3 37.Kc3 Rd3 38.Kc2 Qb3 39.Kc1 Qc3 40.Kb1 –+. badboy1221 – HellNo, Live Game Caissa's Web, 2004.

5.e3 Nf6 6.Nd2 Nbd7 7.c4 Be7 8.Ne2 0–0 9.Ng3 Bg6 10.Be2 Re8 11.h4 h6= 12.Qb3 c6 13.dc6 bc6 14.Rc1 Rb8 15.Qc3 Bf8 16.a3 a6 17.0–0 Qc7 18.f3 ef3=+ 19.Bf3 Ne5 20.e4 Qe7 21.Rce1 a5=+ 22.ba5 Rb2 23.Qb2 Nd3 24.Qc2 Ne1–/+ 25.Re1 d5 26.cd5 Nd5 27.Qc4?? Qh4–/+ 28.Ndf1 Nf4 29.e5?? Bd3 30.Qc6–/+ Bf1 31.Nf1 Qe1 32.Qe8=+ Nd3 (32...Nd3 33.a6 Qf2 34.Kh2 Qf1+–). revbodio (1945) – BeautyandBrain6 (1605), Caissa's Web, 2006.

4.d5 Nf6

5.Nd2 Bf5 6.e3 Nd5 7.b5 Be7 8.Bg7=+ Rg8 9.Qh5 Be6 10.Qh7+= f6? 11.Bc4 Qd7 12.Ne4 f5 13.Ng3?? Bg5?? 14.Qh5+– Qf7 15.Qf7 Bf7 16.Nf5 Nd7 17.Nf3 Bf6 18.Bf6 N7f6 19.Nh6 Rg2 20.Nf7 Kf7 21.Bd5 Nd5 22.c4 Nb6 23.Rc1 Na4 24.Ke2 Nc5 25.Rcg1 Rag8 26.Kf1 R2g4 27.Nd2 Ne4 28.Rg4 Nd2 29.Ke2 Rg4 30.Kd2 Rc4 31.Rc1 Rb4 32.Rc7 Ke6 33.Rb7 Rb2 34.Kd3 Ra2 35.h4 Kd5 36.Rc7 Rf2 37.e4 Ke6 38.Ra7 Rh2 39.Rh7 Rb2 40.Kc4 Rb1 41.h5 Rc1 42.Kd4 Rb1 43.Kc4 Rc1 44.Kb4 Rb1 45.Ka5 Ke5 46.Re7 Kf6 47.Re8 Rh1 48.Rf8 Ke5 49.Re8 Kd4?? 50.b6+– Rh5 51.Ka6 Rh1 52.Re6 Kc5 53.Kb7 Re1?? 54.Kc7 d5 55.Rc6 Kd4 56.b7 Rb1 57.Rb6 Rc1 58.Kd7 de4 1–0. gtate – darkprincess, net–chess.com, 2001.

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.d4 e4 5.d5).

4.e3 d5

5.a3 Nf6 6.c4 c6 7.Nc3 Be6 8.c5 Be7 9.Nge2 Nh5 10.b5 0–0 11.a4 Qc7 12.Rb1 b6 13.Ba3 Rc8 14.a5 Bd8 15.ab6 ab6 16.cb6 Qb7 17.bc6 Rc6 18.Na4 Nd7 19.Bc5 Nb6 20.Nec3 Nf6 21.Qc2 Rb8 22.Be2 Qc8 23.0–0 Na4 24.Rb8 Qb8 (24...Nc5?? 25.Rc8 Rc8 26.dc5 Rc5 27.Ra1+–) 25.Qa4 Qc8 26.Na2 Bd7 27.Qb3 Qa8 28.Nb4 Rc8 29.Bd6 Bc6 30.Qb2 Qa7 31.Nc6 Rc6 32.Bc5 Qd7 33.Ra1 Rc8 34.Ra7 Rc7 35.Bg4?? (better is 35.Bb5 Qe6 36.Ra6+=) 35...Qg4–+ 36.Ra1 Qc8 37.h3 h6 38.Qa2 Be7 39.Be7 Rc1 40.Rc1 Qc1 41.Kh2 Qc7 42.Kg1 Qe7 43.Qa8 Kh7 0–1. Benassi,Aspasio (2150) – Tortosa,Horacio (1725), IECG, 2004.

5.a4 Bb4–/+ 6.c3 Ba5 7.Ba3 Ne7 8.f3 (8.Bb4 Bb4 9.cb4 Qd6–/+) 8...f5 (8...Nf5 9.Qe2–+) 9.Nd2 (9.Ne2!?–/+) 9...Bc3–+ 10.Rc1 Ba5 11.Ne2 ef3 12.gf3 Ng6 13.Rc5 (13.Qb3 c6–+) 13...Qh4 (13...b6!? 14.Ra5 Qh4 15.Ng3–+) 14.Ng3 Bb6 15.Rd5 Be6 16.Bb5 (16.Rb5 a6 17.Rb1 f4 18.ef4 Qf4–+) 16...c6 17.Rd6 Bc8 (17...cb5?! 18.Re6 Kd8 19.ab5=) 18.Bc4 (18.Bd3 Bc7–+) 18...Bc7 19.Re6?? (better is 19.Qc2–+) 19...Be6 20.Ke2 (20.Be6 Bg3 21.Ke2 Bc7 (worse is 21...Bh2 22.Qb3 b6 23.Bf5–+) 22.Bf5 Ne7 (22...Bh2 23.Qb3 Ne7 24.Qb7 Nf5 25.Qc8 Qd8 26.Qf5–/+) 23.Be7 Qe7–+ (23...Ke7?! 24.Qb3 Na6 25.Qb7–+)) 20...Bc8 21.Ndf1 (21.f4 Nd7–+) 21...f4 22.Ne4 Nd7 (22...fe3 23.Ne3 Nf4 24.Kd2–+) 23.d5 (23.Bd6 Nb6 24.Bc7 Nc4–+) 23...Nde5 24.d6 Nc4 25.Bc5 (25.dc7 fe3 26.Bd6 Qe4 27.fe4 Bg4 28.Kd3 Nb2 29.Kd4 Nd1 30.Ne3 Ne3 31.Ke3 Kd7–+) 25...b6 (better is 25...Ba5 26.Bd4 fe3 27.Be3–+) 26.dc7 bc5 27.Nc5 (27.Nd6 Nd6 28.Qd6 Ba6 29.Kd1 Qh3 30.Qc6 Qd7 31.Qd7 Kd7–+) 27...0–0 (27...fe3 28.Qd8 Qd8 29.cd8Q Kd8 30.Ne3–+) 28.Qd4 (28.Qb3 fe3 29.Ne3 Nge5 30.Nc4 Nc4–+) 28...Nge5 29.Rg1 (29.ef4 Bg4! 30.Nd2 Nd2 31.Qe5 Nf3–+) 29...Qh5 30.ef4 Qf3 31.Ke1 Rf4 32.Qd8 Kf7 33.Ng3 Nd3! 34.Qd3 (34.Nd3 Qe3 A double attack) 34...Qf2 Theme: Double Attack 35.Kd1 Nb2 36.Kc1 Nd3 37.Nd3 Qe3 (37...Rc4 38.Kd1 Bg4 39.Ne2 Qe2) 38.Kc2 If White now would get Nxf4 in, he might survive 38...Rc4 (38...Rc4 39.Kb2 Qb6 40.Nb4 Qb4 41.Ka1 Qc3 42.Ka2 Ra4 43.Kb1 Ra1) 0–1. Wloka,Frank – Wessel,Kai (2210), remoteschach.de, 2003.

5.b5 a6 6.ba6 Na6 7.c4 =+.

5.b5 b6 6.a4 Nf6 7.Be2 Bd6 8.Nh3 0–0 9.0–0 c6 10.f3 Bc7 11.f4 Bh3 12.g3?? Bf1–+ 13.Qf1 c5 14.c3 Nbd7 15.c4 Qe7 16.Nd2 cd4 17.Bd4 Nc5 18.Bf6 Qf6 19.Rc1 d4 20.Qf2 d3 21.Bg4 Qb2 22.Rb1 Qa2 23.Bd7 Nd7 (24.Qe1 Qa4 25.Ne4 Qc4–+) 0–1. Midrash – bullwinkle, Live Game Caissa's Web, 2004.

5.b5 Nf6 6.Ba3 Ba3 7.Na3 0–0 8.c4 c6 9.cd5? Qa5–+ 10.Qd2 Qa3 11.Rb1 Qd6 12.bc6 bc6 13.dc6 Nc6 14.Ne2 Ng4 15.Ng3 Be6 16.Be2? Qa3 17.Bg4 Bg4 18.Ne4 Na5 19.0–0 Bf5–+ 20.f3 Nc4 21.Qe2 Ne3?? 22.Rb3+= Qa5 23.Qe3 Qa2+= 24.Ng3 Be6 25.Ra3 Qc4 26.Rc1 Qb4 27.Rca1 Rfc8 28.Ne4 Bd5 29.Nc5+= Re8 30.Qf2 g6 31.Na6 Qe7 32.h3 Qg5?? 33.Nc7+– Rec8 34.Na8 Ra8 35.Ra7 Rb8 36.Rd7 Qf5 37.g4 Qd7–+ 38.Re1 Qc6 39.Re7 Rf8 40.Qe1 Bf3 41.Re5 Bg2 42.Rc5 Qf3 43.Qf2 Qh3 44.Qg2 Qe3 45.Qf2 Qe6 46.Re5 Qg4–+ 47.Kf1 Qd1 48.Kg2 Qg4?? 49.Kf1 Qh3 50.Ke1 Qh1 51.Kd2? Qh6 52.Kc3 Rc8 53.Rc5 Qh3 54.Kc4 Qe6 55.Kd3 Qb3 56.Ke4 Re8 57.Re5 Qb1 58.Kf3 Qd3 (58...Qd3 59.Kg2 Re5 60.de5 Qe4 61.Kg1 Qe5–+; better is 58...Re5 59.de5 Qf5 60.Ke3 Qf2 61.Kf2–+) 0–1. pinecrest1981 – inconsistence, Live Game Caissa's Web, 2005.

5.Be2 Bb4 6.Nc3 Nf6 7.f3 0–0 8.Qd2 Re8 9.0–0–0 c6 10.Nh3 Qe7 11.Nf4? Ba3 12.Ba3 Qa3 13.Kb1 b5 14.fe4?! b4 15.Nfd5 cd5 –+. AllKnighter – jartug, ChessWorld.net, 2003.

3.e4 a6

4.a3 Nc6 5.Nf3 (not finished by Black). Benassi,Aspasio – Ventra,Marco, 2000.

4.a3 Be6 5.Nf3 h6 6.Nc3 Nc6 7.Be2 Nf6 8.d3 Be7 9.0–0 0–0 10.Na2 Na7 11.c4 c6 12.Nc3 b6 13.Qc2 d5 14.Ne5+/– dc4 15.dc4 Qb8 16.f4 Bd7 17.Nd7 Nd7 18.e5 a5 19.ba5 ba5 20.Rab1 Qc7 21.Ne4 Nc5 22.Kh1 Qd7 23.Rfd1 Qe6? 24.h3 Qf5?? 25.Bf3 Qf4+/– 26.Nd6 Nd7?? 27.Qc3 f6+/– 28.ef6?? Bf6?? 29.Qd3 Be5 30.Be5 Ne5 31.Qb3 Nf3 32.c5 Kh8–+ 33.gf3 Qf3 34.Kg1 Qf2 35.Kh1–/+ Rf3 36.Qe6? Ra3 37.Nf7 Kh7 38.Qe4 g6 39.Ng5 hg5 40.Rd7 Kh6 41.Rd3 Ra2 (41...Ra2 42.Qe2 Re2 43.Rbd1 Qg2#) 0–1. mic (2100) – vgomdysey (2180), net–chess.com, 2008.

4.a3 Nf6 5.Nc3 Be6 6.h3 Be7 7.Be2 0–0 8.Nf3 c6 9.0–0 h6 10.d4 Nbd7 11.de5 Ne5 12.Ne5 de5 13.Qd8 Bd8 14.f3 Nh5 15.Kh2 Nf4 16.Bd3 Bc7 17.Ne2 Ne2 18.Be2= f5 19.ef5 Rf5 20.Kh1 Raf8 21.Rad1 b5 22.Bd3+= R5f6 23.Rde1 R6f7 24.Re2 Bf5 25.Be5 Bb6 26.Bf5 Rf5 27.Rfe1 a5 28.Bd6 R8f7 29.Re6 Rd5 30.ba5 Ba5 31.Bb4 Bb4 32.ab4 Rc7 33.Re7 Rdd7 34.Rd7+/– Rd7 35.Re6 Rc7 36.Re5 Kf7 37.f4 Kf6 38.h4 Re7 39.Rc5 Rc7 40.g3 Ke6 41.Kg2 Kd6 42.Kf3 Re7 43.Rc3 Kd5 44.Kg4 Re6 45.Rc5 Ke4 46.h5 Rd6 47.Re5+– Kd4 48.Kf3 Kc3+/– 49.f5 Kc2 50.Re6+= Rd3 51.Ke4 Rg3 52.Rc6 Kb3 53.Rg6 Rh3 54.Rg7 Rh1 55.Rg3 Kb4 56.f6 Rh5?? 57.f7+– Rh4 58.Ke3 (58…Rc4 59.f8Q Ka5 60.Qa3 Kb6 61.Rg7 Kc6 62.Rg6 Kb7 63.Qa6 Kb8 64.Rb6 Kc7 65.Rb7 Kd8 66.Qd6 Ke8 67.Qe7#) 1–0. Materna,Edmund – Napierski,Reinhold, Bahn–chS Bernkastel–Kues, 1995.

4.Nc3 Bd7 5.d4 ed4=+ 6.Qd4 Nc6 7.Qc4 Be6 8.Nd5= b5?? 9.Qb3 Nge7 10.c4 bc4 11.Bc4 Bd5 12.ed5+– Nb8 13.Qa4 Qd7+/– 14.b5 a5 15.Ba3 Na6? 16.Nf3 Nc5? 17.Bc5 dc5 18.0–0 Nd5?? 19.Rad1 Bd6 20.Rd5 0–0 21.Ne5 Qe7 22.Nc6 Qe4 23.Bb3 Qa4 24.Ba4 Rae8 25.Na5 Re4?? 26.Bb3 Ra8 27.Nc4 h6 28.Nd6 cd6 29.b6 Rb4 30.Rd6 Rb8 31.Rc1 R4b6 32.Rb6 Rb6 33.Rc5 Rb7 34.Bc2 g6 35.Rc8 Kg7 +–. kamera – jsantos, GameColony.com, 2002.

4.Nc3 Nf6 5.Nf3 (--> 4.Nf3 Nf6 5.Nc3).

4.Nc3 h5 5.Nf3 Bg4 6.h3+= Bf3 7.Qf3 g5 8.Bc4+/– Nf6 9.Nd5 Nd5 10.Bd5+– f6 11.Bb7 Ra7 12.Bd5 c6 13.Be6 Bg7 14.Qf5 Rh6 15.Bb3 d5 16.ed5 cd5 17.0–0 Bf8 18.Ba4 Kf7 19.Be5 Bb4 20.Rfb1 a5 21.Bb8 Qb8 22.c3 Qe5 23.Qe5 fe5 24.cb4 ab4 25.Bb3 Ke6 26.Rc1 Ra6 27.Rc5 Kf5 28.Rd5 g4 29.hg4 hg4 30.Re1 Rad6 1–0. marekt – NN, GameColony.com, 2002.

4.c4 Nc6 5.a3 h6 6.Nc3 Be6 7.Nf3 Nf6 8.d4 ed4 9.Nd4+= Nd4 10.Qd4 Be7 11.Bd3 0–0 12.0–0 Re8 13.Rad1 Qd7 14.Nd5 Bd5 15.cd5+/– c6 16.dc6 Qc6 17.Rc1 Qd7 18.Bc4 Rac8 19.f4 Bd8 20.Bd3 Rc1 21.Rc1+= b5 22.Kh1 Qb7 23.Qd6 Ne4= 24.Be4 Qe4 25.h3 Qb7 26.Bd4 Bc7?? 27.Rc7+– Re1 28.Kh2 Qe4 29.Rc8 Kh7 30.Rh8! Kh8 31.Qf8 Kh7 32.Qg7# 1–0. Wall,Bill – Karlsaround, internet, 2002.

4.c4 Be6 5.Nf3 Ne7 6.a4 Nd7 7.d4 Bg4 8.Be2 Nc6 9.b5+= ab5 10.ab5 Ra1 11.Ba1 Ne7 12.de5 Bf3 13.Bf3 de5 14.0–0 c6 15.bc6 Nc6 16.Qb3 Qc7 17.Rd1 Be7 18.Bg4 Ncb8 19.Qb5 Bf6 20.Nc3 h6 21.Nd5 Qc8?? 22.Nb6+– Qc7 23.Bd7 Nd7 24.Qd7 Qd7 25.Nd7 Ke7 26.Nf6 gf6 27.Rb1 Ra8 28.Rb7 Kf8 29.Bc3 Rd8 30.Kf1 Rd1 31.Ke2 Rg1 32.g3 Rh1 33.h4 Rc1 34.Bb4 Kg7 35.c5 Rb1 36.c6 Rb2 37.Kf1 Rc2 38.c7 Kg6 39.Ba5 Rc5 40.Rb8 Ra5 41.c8Q Ra1 42.Kg2 Re1 43.Qf5 Kg7 44.Qg4 Kh7 45.Qg8# 1–0. Otten,Thomas – Schimanski,Kevin, SJNR–ch U16, 2005.

4.Bc4 Be6 5.Qe2 Nf6 6.Nc3 Bc4 7.d3?? Be6–+ 8.Nf3 Be7 9.0–0–0 Nc6 10.Ng5 Nb4 11.Ne6 Qd7 12.Ng7+/– Kf8 13.Nf5 c6 14.g4 a5 15.d4 b5? 16.de5+– Ne8 17.Ne7 Qe7 18.ed6 Nd6 19.Kb1 Re8? 20.e5 Nc4+/– 21.Ne4?? Nb2–+ 22.Nd6?? Nd1 23.Ne8 Nc3 (23...Nc3 24.Kc1 Ne2 25.Kd2 Ke8 26.Ke2 Qe5 27.Kf3 Qd5 28.Kg3 Qh1–+) 0–1. Knight – Seeigel, mySchach.de, 2004.

4.d4 Nc6 5.de5 Ne5 6.Be5 de5 7.Qd8 Kd8 8.a3 Nf6 9.Nc3 b6 10.0–0–0 Bd6 11.h3 Be6 12.Nf3 h6 13.Ne5+/– Ke8 14.Nc4 Bf4 15.Kb2 Ke7 16.g3 Bc4 17.Bc4 Be5 18.Rhe1 Rhe8 19.f4+– Bc3 20.Kc3 b5 21.Bb3 Kf8 22.e5 Nh5 23.Rd3 g6 24.Kb2 Rad8 25.Ree3 Ng7 26.g4 Ne6 27.Be6 Rd3 28.Rd3 Re6 29.h4 Ke7? 30.g5+– hg5 31.hg5 1–0. PawnPower – eduso, internet, 2006.

4.d4 ed4=+ 5.Bd4 Nf6 6.f3 Nc6=+ 7.c3 Be7 8.Bd3 Nd4 9.cd4 Nh5 10.Ne2= Bh4 11.g3 Be7 12.0–0 Bh3 13.Re1 0–0 14.g4?? Bh4–+ 15.Ng3? Ng3 16.hg3 Bg3 17.Re2 Qh4 18.Nd2 Bf4 19.Nf1 Bf1 20.Kf1? Qh1 21.Kf2 Qh2 22.Ke1 Bg3 23.Kd2–/+ Bf4 24.Kc2 Qh6 25.Rg2 c5 26.bc5 Rac8 27.Rb1? dc5–+ 28.d5 c4 29.Be2 Qf6 (29...Qf6 30.g5 Qe7–+; 29...b5!? 30.a4–+) 0–1. wood – peacemaker, Live Game Caissa's Web, 2005.

4.Qf3 Nc6 5.Nc3 Nb4–/+ 6.0–0–0 Nf6 7.a3 Bg4 8.Qe3 Bd1–+ 9.Kd1 Nc6 10.f4 Be7 11.Bc4?! Qd7 12.f5 Na5 13.Bd3 c5 14.Nf3 0–0 15.h3 g6 16.g4 Kg7?? 17.Rg1?? Nc6 18.g5=+ Nh5 19.f6 Bf6 20.gf6 Nf6 21.h4 b5 22.Nd5 Nd5–+ 23.ed5 Nd4 24.c3 Nf3 25.Qf3 Rae8 26.h5 c4 27.Be4 Qa7 28.Rg2 Kh6 29.Bc1 Qe7 30.d3 Kg7 31.hg6 fg6= 32.Qh3 Rf1 33.Kd2 Ref8 34.Kc2= R8f2 35.Kb1 Rg2–/+ 36.Qg2 Rf7 37.Qh2 cd3 38.Qh6 Kg8–/+ 39.Bd3 Qc7 40.Kc2 Rf2 41.Kb3 Qc5 42.c4?? Rf3 43.Kc3 Qc4 (43...Qc4 44.Kb2 Qd4 45.Ka2 Rf2 46.Qd2 Rd2 47.Bd2 Qd5 48.Kb2 Qd3–+) 0–1. Gregor123 – dennis2004, mySchach.de, 2004.

4.Nc3 Nc6

5.b5 ab5 6.Bb5 Nf6 7.Bc6 bc6 8.Nf3 Bg4 9.h3 Bf3 10.Qf3 Qb8 11.Rb1+= Be7 12.a4 Qb4 13.Ba1 Qa5 14.0–0 0–0 15.Qf5 Rfb8 16.Rfe1 Rb6 17.Rb2 Kh8 18.Reb1+= Qc5 19.g4 Kg8 20.d3 Qc3 21.Rb6+= Qc2 22.R6b3 g6 23.Qf3 Nd7 24.R3b2 Qa4 25.Rb7 Ra7 26.R7b4 Qa2 27.R4b2 Qa6 28.Rb3 Bf8 29.d4 Qa1 30.Ra1 Ra1 31.Kg2 ed4 32.Rb7 Ne5 33.Qb3 Re1 34.f4+= Re2 35.Kf1 Re3 36.Qa4 Rf3 37.Kg2 Rf4 38.Qd4 c5 39.Qe3 Bh6 40.Qe1 c6 41.Qh4 Kg7 42.Qd8 Re4 43.Rb8 Bf4 44.g5 Bg5 45.Qg5 Re2 46.Kg3 f6? 47.Rb7+– Nf7 48.Qg4 Re3 49.Kf2 f5 50.Qc4 d5 51.Qc5 Re6 52.Qd4 Rf6 53.Rc7 c5 54.Rc5 Ng5 55.Rc7 Kg8 56.Qd5 Nf7 57.Qa8 Kg7 58.Qa1 Kh6 1–0. COMP – COMP, 2002.

5.b5 Nd4 6.ba6 ba6 7.Nge2 =.

5.b5 Nd4 6.ba6 ba6 7.Nf3 Bg4 8.Be2 Ne2 9.Qe2 Nf6 10.Rb1 Nh5 11.Nd5 c6 12.Ne3 Be6 13.g3 Nf6=+ 14.Nc4 Rb8 15.0–0 Rb4 16.d3 Be7 17.a3 Ra4 18.Ne3 0–0 19.c4 Ra5 20.Qc2 c5 21.Ra1 Bh3 22.Rfb1 Qe8 23.Bc3 Ra4 24.Nd1 Bg4 25.Kg2 Bd8 26.Nb2 Bd7 27.Ra2 Ng4 28.h3 Nh6 29.g4 Bc6 30.Na4 Ba4 31.Qe2 Qe6 32.Rab2 Re8 33.Rb8 Bd7 34.Qe3 Qg6 35.R1b7 Bc6 36.Ra7 f5 37.Ra6 fg4 38.Rc6 gf3 39.Kf3 Bg5 40.Qg5! Qg5 41.Re8 Kf7 42.Ra8 Ke6 43.Raa6 Nf7 44.Rc5 Qh5 45.Kg2 Qg5 46.Kf1 Qh5 47.Rd5 Qh3 48.Ke1 Qh1 49.Kd2 Qf3 50.c5 Qf2 51.Kd1 h5 52.cd6 Kd7 53.Rb5 g5 54.Rb7 Kc8 55.Re7 Kb8 56.d7 Qf1 57.Kc2 Qf2 58.Kb3 Nd8 59.Re5 Kb7 60.Rh6 Qf7 61.Rd5 g4 62.Rh8 Ne6 63.Kb4 Qe7 64.Kb5 Nc7 65.Kc4 Nd5 66.d8Q Qd8 67.Rd8 Nc3 68.Kc3 g3 69.Rh8 Kc6 1–0. Fritz 5.32 – Fritz 6, 2002.

5.Bc4 Nb4 6.Nf3 Bg4 7.h3 Bf3 8.Qf3= Qf6 9.Qd1 c5 10.a3+/– Nc6 11.Nd5 Qd8 12.0–0 Nf6 13.Nf6 Qf6 14.f4 Qh4 15.fe5+– Ne5 16.Be5 de5 17.Bf7 Kd8 18.Bd5 Rb8 19.Rf7 b5 20.a4 b4 21.Qf1 Rb6 22.Rf8 Rf8 23.Qf8 Kd7 24.Rf1 Rf6 25.Qg7 (25.Qg7 Kc8 26.Rf6 Qf6 27.Qf6 c4 28.Be6 Kb7 29.Qe7 Kb6 30.Qd8 Kc6 31.Bd5 Kc5 32.Qc7 Kd4 33.Qc4#) 1–0. Kelish (1960) – Netto (1635), internet, 2006.

4.Bc4 Nc6

5.Nc3 Nb4 6.Ba3 c5 7.Bb4 cb4 8.Nd5 Be6 9.Qb1 b5–/+ 10.Bb3 Qa5 11.Nf3=+ Be7 12.Ne7 Ke7 13.d4 Nf6 14.de5 Ne4 15.ed6 Nd6 16.Qb2 f6 17.Be6 Ke6–/+ 18.0–0 Nc4 19.Qd4=+ Rhd8 20.Qe4 Kf7 21.Qh7 Nd2 22.Nd2 Rd2 23.Rfe1 Qd8 24.Qe4+= Rc8 25.Qe6 Kf8 26.Qa6 Rcc2 27.Qb5 Rf2 28.Qb4 Kg8 29.Qb3 Kf8 30.Qh3 Rg2 31.Qg2 Qd4 32.Kh1 Rg2 33.Kg2 Qg4 34.Kh1 Qf3 35.Kg1 Qg4 36.Kh1 Qf3 37.Kg1 Qg4 38.Kh1 ˝–˝. Comet B25 – Fritz 5.32, 2002.

5.Nc3 Nb4 6.Ba3 Nc6 7.Nf3 Be7 8.Rb1 Nf6 9.0–0 0–0 10.Re1 Ra7 11.d3 Bg4 12.h3 Bh5 13.Nd5 Nd5 14.Bd5 a5 15.c3=+ Bf6 16.Bc1 Qc8 17.g4 Bg6 18.Be3 Ra8 19.Qb3 Rb8=+ 20.Kg2 Qd7 21.Qa4 b5 22.Rb5+/– Ne7 23.Bc4 d5+= 24.ed5 Rb5 25.Bb5 Qd5= 26.Bc4 Qa8 27.Bc5 Re8 28.Re3 Qc6 29.Qc6+/– Nc6 30.g5 Be7 31.Be7+– Re7 32.Bd5 e4 33.Bc6 ef3 34.Kf3 Re3 35.Ke3 Kf8 36.Be4 f5 37.Bb7 a4 38.a3 Ke7 39.Kf4 Kd7 40.d4 c6 41.h4 Bf7 42.Kf5 Kd6 43.Ba6 c5 44.Ke4 Bg6 45.Ke3 cd4 46.Kd4 Kc6 47.c4 Kb6 48.Bb5 Ka5 49.Bd7 Bf7 50.c5 Bb3 51.Ke5 Bc4 52.Kd6 Bd3 53.c6 Bc4 54.c7 Ba6 55.f4 h5 56.f5 Kb6 57.f6 gf6 58.gf6 Bb7 (58...Bc4 59.c8Q Bd5 60.Qc7 Ka6 61.Kc5 Bf7 62.Bb5#) 1–0. Comet B25 – EXchess 3.11, 2002.

5.Nc3 Nc6 6.a3 Be6 7.Be6 fe6 8.Nh3 Be7 9.0–0 d5 10.Ng5 Qd6 11.Re1 0–0 12.d3 d4 13.Ne2 b5 14.Qd2 a5 15.ba5 Ra5 16.Reb1 Nd7 17.Nf3 Ra4 18.c3 Rfa8 19.Qc2 Nc5 20.Rc1 Kh8 21.Rab1 Qd7 22.Rd1 Rd8 23.Ne5 Ne5 24.cd4 Ned3 25.dc5 Rc4 26.Qb3 Re4 27.Kf1 Bc5 28.Qc3 e5 29.Nc1 Nb2 30.Rd7 Rd7 31.Nb3 Na4 32.Qc2 Rc4 33.Qc4 bc4 34.Nc5 Nb6 35.Nd7 Nd7 36.Rd1 Nf6 37.Rd8 Ng8 38.a4 c3 39.Rc8 h6 40.a5 Kh7 41.Rc7 Nf6 42.Rc3 Nd7 43.a6 h5 44.Rc8 Nb6 45.Rb8 Nd7 1–0. Comet B25.

5.Qf3 Nf6 6.Qb3 d5 7.ed5= Nd5?? 8.Bd5+– Nb4 9.Bf7 Ke7 10.Ba3 c5 11.Bb4 cb4 12.Nf3 e4 13.Ng5 h6 14.Qb4 Kd7 15.Be6 Ke8 16.Qe4 Qg5 17.Bc8 (17.Bc8 Qe7 18.Bb7+–) 1–0. Wall,Bill – WhizKid, internet, 2000.

5.Qf3 Nf6 6.Nc3 Be7 7.Nd5=+ 0–0 8.Nf6 Bf6 9.Nh3 Be6 10.Be6= fe6 11.0–0 Qe7 12.c4 Nb4–/+ 13.Ba3 Nc6 14.Qe3 Nd4 15.c5? Nc2–+ 16.Qc3 Na1 17.cd6 cd6 18.Qa1 h6 19.Bb2 b5 20.d4 Rac8 21.de5 de5 22.Be5 Be5 23.Qe5 Qf6 24.Qg3 Kh7 25.Nf4?? Qf4 26.Qf4 Rf4 27.f3 Rf7 0–1. bambinik – reno, internet, 2001.

4.Bc4 Nf6

5.Nc3 c6 6.d4 Qb6 7.de5 Ng4 8.Qd2 Qb4 9.Bb3 Ne5 10.a3 Qb6 11.Na4 Qc7 12.Bc3 Nbd7 13.f4 b5 14.Ba5 Qa7 15.Nc3 Ng4 16.Nf3 Qe3 17.Qe3 Ne3 18.Kf2 Ng4 19.Kg3 Ndf6 20.Nd4 c5 21.Nd5 cd4 22.Nc7 Ke7 23.Na8 Ne4 24.Kf3 Ngf2 25.g3 Bg4 26.Kg2 Nh1 27.Rh1 Nc5 28.Re1 Kf6 29.Bd5 Bf5 30.Re2 h5 31.h3 Rg8 32.Nc7 Kg6 33.Be1 Rh8 34.Bf2 d3 35.cd3 Nd3 36.h4 b4 37.ab4 Nb4 38.Bb3 Bd3 39.Re8 Bb1 40.Be1 Nc6 41.Na6 Bf5 42.Bc3 Rg8 43.Ba4 Ne7 44.Bb4 Nc8 45.Bd1 Bd7 46.Rd8 Be6 47.Nc7 Bf5 48.Nd5 Be6 49.Ne3 f5 50.Bc2 Kf7 51.Nf5 d5 52.Bc3 Nb6 53.Kh2 Bf5 54.Bf5 Bc5 55.Be6 Ke6 56.Rg8 d4 57.Be1 Kf6 58.Rb8 Nd7 59.Rb7 Ke6 60.f5 Kd6 61.Ba5 d3 62.Rb3 Ne5 63.Bc3 Ng4 64.Kg2 Kd5 65.Bg7 Ke4 66.Bc3 Ne3 67.Kh3 Nf5 68.Rb5 Bd4 69.Bd2 Ne3 70.Rh5 Nc4 71.Bb4 d2 72.Bd2 Nd2 73.g4 Nf3 74.Rh7 Ng1 75.Kg2 Kf4 76.Rd7 Ne2 77.Re7 Nc1 78.Kh3 Nd3 79.Rf7 Ke5 80.g5 Ke6 81.Rf1 Bh8 82.h5 Bd4 83.h6 Ne5 84.Kh4 Bc3 85.h7 Ng6 86.Kh5 Nh8 87.g6 Bg7 88.Kg5 Kd6 89.Rd1 Ke7 90.Rb1 Bc3 91.Rb7 Kf8 92.Rb8 Ke7 93.Rg8 Ba1 94.g7 Nf7 95.Kf5 Bb2 96.h8Q Nh8 97.gh8Q Bh8 98.Rh8 Kd6 99.Ke4 Kc5 100.Rd8 Kc6 101.Rd5 Kc7 102.Kd4 Kb6 103.Rc5 Ka6 104.Kc4 Kb6 105.Kb4 Ka6 106.Rc6 Kb7 107.Kc5 Ka7 108.Rc7 Ka8 109.Kc6 Kb8 110.Kb6 Ka8 111.Rc8 1–0. Comet B25 – Fritz 6.

5.Nc3 Nc6 6.a3 Be6 7.Be6 fe6 8.Nh3 Be7 9.0–0 d5 10.Ng5 Qd6 11.Re1 0–0 12.d3 d4 13.Ne2 b5 14.Qd2 a5 15.ba5 Ra5 16.Reb1 Nd7 17.Nf3 Ra4 18.c3 Rfa8 19.Qc2 Nc5 20.Rc1 Kh8 21.Rab1 Qd7 22.Rd1 Rd8 23.Ne5 Ne5 24.cd4 Ned3 25.dc5 Rc4 26.Qb3 Re4 27.Kf1 Bc5 28.Qc3 e5 29.Nc1 Nb2 30.Rd7 Rd7 31.Nb3 Na4 32.Qc2 Rc4 33.Qc4 bc4 34.Nc5 Nb6 35.Nd7 Nd7 36.Rd1 Nf6 37.Rd8 Ng8 38.a4 c3 39.Rc8 h6 40.a5 Kh7 41.Rc7 Nf6 42.Rc3 Nd7 43.a6 h5 44.Rc8 Nb6 45.Rb8 Nd7 1–0. COMP – COMP, 2002.

5.Nc3 Be7 6.Nf3 0–0 7.0–0 b5 8.Bb3 Bg4 9.h3 Bh5 10.Ne2 c5 11.Bd5? Nd5–+ 12.ed5 Bf3 13.gf3 Nd7 14.bc5–/+ Nc5 15.d4 Na4 16.Bc1 Bh4 17.de5–/+ de5 18.Ng3 Nc3–+ 19.Qd3 Rc8 20.Bb2 Nd5 21.Be5–/+ Re8 22.Rfe1 Nb4–+ 23.Qd8 Red8 24.Re4 Bg3 25.fg3–/+ Nc2 26.Rb1 Na3 27.Rbe1 Nc4 28.Bf4 f6 29.Re7 Nd2 30.Kg2 Rc2?? 31.Re8+= Re8 32.Re8 Kf7 33.Re2 (33.Re2 Ra2 34.Rd2 Rd2 35.Bd2=). AaronB – ana_goldberg, internet, 2005.

5.Nc3 Be7 6.Nf3 h6 7.0–0 0–0 8.Re1 b5 9.Bd5 Nd5 10.Nd5+= Bg4 11.h3 Be6 12.Ne7 Qe7 13.a4 ba4 14.Ra4 Nc6 15.d4 ed4 16.Nd4 Nd4 17.Qd4 Qg5 18.Bc1 Qg6 19.Qe3 Bd7 20.Ra5 Rfe8 21.f3 Bh3 22.Re2 Bd7–/+ 23.Qb3 Bb5 24.c4 Bd7 25.b5 ab5–/+ 26.Ra8 Ra8 27.cb5 Ra1 28.Qb2 Qf6?? 29.Qf6?? Rc1–+ 30.Kf2 gf6 31.Rb2 Rc5 32.b6 cb6 33.Rb6 Rc6 34.Rb8 Kg7 35.Rb7 Be6 36.g4 d5 37.ed5 Bd5 38.Rd7 Be6 39.Rd2 f5 40.gf5 Bf5 41.f4 h5 42.Kg3 Kg6 43.Rg2 Kh6 44.Kh4 Rc4 45.Rf2 Bg4 46.Rf1 Rc3 47.Rh1 Rf3 48.f5 Rf5 49.Kg3 Rf3 50.Kg2 f5 51.Kh2 Rh3 52.Kg1 Rh1 53.Kh1 Kg5 54.Kg2 Kh4 55.Kf2 Kh3 56.Ke3 Kg3 57.Kd3 h4 58.Kd4 h3 59.Ke5 h2 60.Kf6 h1Q 61.Kg5 Qh5 62.Kf6 f4 63.Kg7 f3 64.Kf6 f2 65.Kg7 f1Q 66.Kg8 Qff7 0–1. andre2004 – erch, ChessWorld.net, 2005.

5.d3 Nc6 6.a3 Be7 7.h3 0–0=+ 8.Nf3 h6 9.Nc3 b5 10.Ba2 Bb7 11.Bc1 Nd4 12.Nd4 ed4=+ 13.Nd5 Nd5 14.ed5 Re8 15.0–0 Bf6 16.Qf3 Bg5 17.Bb2= Qf6 18.Qf6 Bf6 19.c3?? Re2 20.Rfb1 dc3 21.Bc1 c2 22.Bb2 cb1Q 23.Rb1 Rb2 24.Rb2 Bb2 (25.a4 ba4–+) 0–1. PoPer – Razormind, Live Game Caissa's Web, 2004.

5.d3 d5=+ 6.ed5 Nd5 7.Be5 Bb4 8.c3+= Bc5 9.Nf3 f6 10.Bg3 b5 11.Bd5 Qd5= 12.Bc7 b4 13.0–0+= Bf5 14.d4+/– Bd6 15.Bd6 Qd6 16.Re1 Kf7 17.c4 Bg4 18.Nbd2 Nc6 19.Ne4 Bf3?? 20.Qf3 Qd4 21.Ng5 Kg6 22.Ne6 Qc4 23.Rac1 Ne5 24.Rc4 Nf3 25.gf3 a5 26.Rc7 Rhg8 27.Rd1 Rae8 28.Nf4 Kg5 29.Rd4 Kf5 30.Nd5 Ke5 31.Rd1 Rc8 32.f4 Kd6 33.Rc8 Rc8 34.Nb6 (34.Nb6 Kc7 35.Nc8 Kc8 36.Rd5+–) 1–0. 73DADDELDU37 – Harmeling, mySchach.de, 2005.

5.Nf3 Ne4=+ 6.d3 Ng5 7.Ng5 Qg5 8.Qf3 Be6?? 9.Be6+– fe6 10.Nd2 Nc6–/+ 11.0–0–0 d5 12.a3 e4 13.Qe3 Qe3–/+ 14.fe3 ed3 15.cd3 0–0–0 16.Rhf1 Bd6 17.h3 Rhg8 18.Rf7 Be5 19.Rdf1 ˝–˝. FatMaHa – METSAR, ChessWorld.net, 2005.

5.Nc3 b5

6.Be2 Bb7 7.a4 a5 8.Bb5 c6 9.Bd3 ab4 10.Nce2 =+.

6.Be2 Bb7 7.f3 d5 8.Nd5 Nd5 9.ed5 =+.

6.Be2 Bb7 7.f3 Be7 8.a4= ba4 9.Nh3 (9.Ra4 c5=) 9...h6 (9...0–0 10.0–0=) 10.Ra4 Nc6 (10...Bc6 11.Ra1=) 11.0–0 0–0 12.Nd5 Bc8 13.Nf2+= Nd5 14.ed5 Nd4 15.Bd4 ed4 16.Qa1 Bf6 17.Ba6 d3 18.c3+/– Ba6 19.Ra6+– Rb8 20.Nd3 Rb5 21.Qa2 Qe7 22.Re1 Qd7 23.Qa4 Rc8? 24.Ra5 Rcb8 25.c4 Bd4 26.Kh1 c6 27.cb5 cb5 28.Qa2 Qf5 29.Re4 Rc8 30.Ra8 Kh7 31.Rc8 Qc8 32.Rd4 Qf5 33.Qa6 Qf6 34.Rf4 Qg6 35.Qb5 Qg5 36.Qd7 Qg6 37.Rf7 Qd3 38.Rg7 Kh8 39.Rh7! Qh7 40.Qh7 Kh7 41.b5 Kg7 42.b6 1–0. kamret (2150) – rajybaby (1720), GameColony.com, 2003.

6.Be2 c5 7.bc5 dc5 8.Nf3 =+.

6.Be2 Be7 7.Nf3 c6 8.a4+= 0–0 9.ab5 Bb7 10.ba6+= Ra6? 11.Ba6+– Na6 12.Ra4 Nc7 13.0–0 Qd7 14.d4 Ra8 15.Ra8 Ba8 16.de5 Nfe8 17.ed6 Bd6 18.e5 Nb5 19.ed6 1–0. b4_player (2225) – plottedhit (1630), GameColony.com, 2003.

4.Nf3 Nc6

5.a3 Nf6 6.d3 Be7 7.Be2 Bg4 8.0–0 0–0 9.h3 Be6 10.Nbd2 Qd7 11.d4 ed4 12.Nd4 Nd4 13.Bd4 c5 14.bc5 dc5 15.Be3 Rad8 16.Qc1 Qc6 17.f3 Bd6 18.Nc4 b5 19.Nd6+= Rd6?? 20.e5+– Rd7 21.ef6 (21...Re8 22.fg7+–) 1–0. slavisa11 – CaptainCarnage, Live Game Caissa's Web, 2004.

5.b5 ab5 6.Bb5 Bd7 7.0–0 Nf6 8.Nc3 Be7 9.d4 ed4 10.Nd4 Nd4 11.Qd4 Bb5 12.Nb5 c6 13.Nd6 Qd6 14.Qd6 Bd6 15.e5 Be5 16.Be5 Kd7 17.Rfb1 b5 18.Rd1 Ke6 19.Bf6 gf6 20.Rd3 Rhd8 21.Re1 Kf5 22.Rf3 Kg6 23.Rg3 Kh6 24.Rc3 Rd6 25.a3 Ra4 26.g3 Kg6 27.f4 h5 28.h4 Rd2 29.Kf1 Ra6 30.Re8 Rd4 31.Rc5 Rd1 32.Ke2 Rh1 33.f5 Kg7 34.Re3 Ra1 35.Kf2 Rd1 36.Rec3 Rd6 37.Ke3 Kf8 38.Ke2 Kg8 39.Rb3 Rd4 40.Rb4 Rd7 41.g4 Re7 42.Kf3 Re5 43.Rc3 hg4 44.Kg4 Re1 45.h5 Rg1 46.Kf4 Kg7 47.Rh3 Rc1 48.h6 Kh7 49.Rh2 Rf1 50.Ke4 Ra3 51.c4 Raf3 52.Rh5 Rf4 53.Ke3 Rg4 54.Ke2 Rc1 55.Kd3 Rcc4 56.Rc4 Rc4 57.Rh3 Rb4 58.Rh5 c5 59.Ke3 Rb3 60.Ke4 c4 61.Rh1 c3 62.Kd3 b4 63.Rh4 Rb2 64.Rh1 c2 65.Rc1 b3 66.Kc3 Rb1 67.Rc2 bc2 68.Kc2 Rh1 69.Kd3 0–1. EXchess 3.11.

5.b5 ab5 6.Bb5 Bd7 7.0–0 Nf6 8.Nc3 Be7 9.Re1 0–0 10.Bc6 Bc6 11.d4 ed4 12.Nd4 Bd7 13.Qf3 c6 14.Nf5 Bf5 15.Qf5 Ra5 16.Qf3 Qb6 17.Rab1 Qc5 18.a4 Rfa8 19.Bc1 b6 20.Rb3 Ra4 21.Na4 Ra4 22.Rc3 Qa5 23.Rce3 Ra2 24.e5 Nd5 25.Re4 Qc5 26.c4 Nc7 27.ed6 Bd6 28.Rd1 f5 29.Red4 Bf8 30.Be3 Ne6 31.Rd7 Qc4 32.Qf5 b5 33.Rc1 Re2 34.g4 Re3 35.Rc4 Re1 36.Kg2 bc4 37.g5 Kh8 38.Rc7 h6 39.g6 Re5 40.Qe5 c3 41.Qe6 h5 42.Rc8 c2 43.Rf8 1–0. Fritz 6.

5.b5 Nce7 6.ba6 ba6 7.Bc4 h6 8.d4 ed4 9.Nd4 Bb7 10.Qh5+/– g6 11.Qh4 g5 12.Qg3 Nf6 13.Nd2 Bg7 14.0–0–0 0–0 15.Qe3 Ng4 16.Qg3 Ne5 17.Nf5 N7g6 18.Ng7+= Kg7 19.Be5 de5 20.Qd3 Nf4 21.Qd8 Rad8 22.g3 Nh3 23.f3?? Nf2–+ 24.Rhe1 Nd1 25.Rd1 h5 26.f4 gf4 27.gf4 1–0. ajeffries (1645) – valerypavlovich (2120), net–chess.com, 2006.

4.Nf3 f5

5.d3 Nc6 6.a3 Nf6 7.Nbd2 g6 8.Be2 Bg7 9.Qb1 Nh5 10.0–0 Nf4 11.Bd1 0–0 12.c4 Qd7 13.Kh1 b6 14.Rg1 Bb7 15.Ba4 Rad8 16.Qc2 Kh8 17.Rae1 b5 18.Bb3 Rde8 19.Qb1 fe4 20.de4 Nd4 21.Re3 Nb3 22.Rb3 Qe6 23.c5 Rd8 24.Rd1 dc5 25.bc5 Be4 26.Ne4 Qb3 27.Nfd2 Qd5 28.f3 Nd3 29.Bc3 Rf4 30.Ba5 Re4 31.Ne4 Qe4 32.fe4 Nf2 33.Kg1 Rd1 34.Qd1 Nd1 35.c6 Kg8 36.Bc7 Kf7 37.Ba5 Ke7 38.Bb4 Kd8 39.Ba5 Kc8 40.Kf1 Ne3 41.Ke2 Ng2 42.Kf2 Nf4 43.Ke1 Bf8 44.a4 ba4 45.Kd1 Ne6 46.Kc2 Nd4 47.Kd3 Bd6 48.Kc4 a3 49.Bc3 0–1. Fritz 5.32.

5.d3 Nc6 6.Bc3 Nf6 7.Nbd2 Qe7 8.Qb1 d5 9.b5 ab5 10.Qb5 d4 11.Bb2 Qb4 12.Qb4 Nb4 13.Ke2 fe4 14.Ne4 Nc2 15.Rc1 Nb4 16.Rc7 Bf5 17.Nd4 ed4 18.Nf6 Kd8 19.Rb7 Ra2 20.Kf3 Rb2 21.Nd5 Bd6 22.Nb4 Bb4 23.Rf7 Be6 24.Rg7 Rf8 25.Ke4 Rb1 26.g3 Re1 27.Kd4 Kc8 28.Be2 Re2 29.Rc1 Kb8 30.Rcc7 0–1. EXchess 3.11 – Fritz 5.32.

5.ef5 Bf5 6.Bc4 Nc6 7.a3 e4 8.Qe2 d5 9.Bb3 Bg4 10.Qe3 Nge7 11.Nd4 Nd4 12.Qd4 Qd7 13.0–0 0–0–0 14.Qa7 Nc6 15.Qa8 Nb8 16.Nc3 Be6 17.Rfe1 Be7 18.d3 ed3 19.cd3 Bf6 20.Rac1 Rhe8 21.Na4 Qd6 22.Nc5 Qb6 23.Be5 Be5 24.Re5 Bf7 25.Re8 Re8 26.d4 Re2 27.Bc2 Bg6 28.Bg6 hg6 29.Rb1 Qc6 30.Qa7 Nd7 31.h3 Qb6 32.Qa8 Nb8 33.a4 g5 34.b5 a5 35.Kf1 Re8 36.Rc1 g6 37.Rc3 g4 38.hg4 Rh8 39.Re3 c6 40.Re7 cb5 41.Rb7 Qd6 42.ab5 Rf8 43.Ne6 Rd8 44.Rb8 Kd7 1–0. Fritz 6 – Fritz 5.32.

4.Nf3 Nf6

5.Nc3 Be6 6.d4 Bg4 7.de5 Bf3 8.Qf3 de5 9.Rd1 Bd6 10.Qg3 0–0 11.Bc4 Nbd7 12.a3 Qe7 13.Nd5 Nd5 14.Bd5 c6 15.Bb3 Nf6 16.f3 Rad8 17.0–0 Nh5 18.Qg4 Nf4 19.h3 b5 20.Kh1 h5 21.Qg3 h4 22.Qg4 Ne2 23.Kh2 Ng3 24.Rfe1 c5 25.bc5 Bc5 26.f4 Rd1 27.Rd1 g6 28.Qg6 1–0. COMP – tst1, internet, 2001.

5.d3 Nc6 6.c3 Be7 7.Be2 0–0 8.0–0 b5 9.a4= Bb7 10.a5 Na7 11.c4 h6 12.cb5 Rc8? 13.ba6+– Ba6 14.Nbd2 Nh7 15.d4+– Nc6?? 16.Ba6 Rb8 17.b5 Na7 18.de5 Nb5 19.Bb5 Rb5 20.ed6 cd6 21.Bc3 Bf6 22.Bf6 Nf6 23.Nc4 d5 24.ed5 Rd5 25.Qa4 Qa8 26.Nb6 Qa6 27.Nd5 Nd5 28.Rfc1 Ra8 29.Qc6 Nb4 30.Qa6 Na6 31.Rc6 Nb4 32.Rc7 Nd5 33.Rd7 Nf4 34.a6 Rc8 35.a7 Ra8 36.Rb7 Kh7 37.Rb8 (37.Rb8 Ra7 38.Ra7+–) 1–0. alvarinpinguin (2110) – richgrady (1980), net–chess.com, 2006.

5.d3 Be7 6.a3 Be6 7.Nbd2 h6 8.Be2 Nbd7 9.0–0 0–0 10.c3 Nh7 11.d4+= c6 12.c4 Bg5 13.Ng5 Qg5 14.Nf3 Qe7 15.d5 cd5+= 16.cd5 Bg4 17.h3 Bf3 18.Bf3 Ng5 19.Rc1 Rac8 20.Qe2 Qf6 21.Bg4+/– Rfd8?? 22.Rc8+– Rc8 23.Bd7 Rc7 24.Bg4 Qf4 25.Bf3 b5 26.Qd3 Rc4 27.Qe3 Nf3 28.gf3 Qh4 29.Kg2 Rc2 30.Bc1 g5 31.Bd2 Rd2 32.Qd2 h5 33.Rh1 1–0. Marcos_Yunge (1690) – ciudineugen, internet, 2007.

5.d4 Nbd7 6.de5 de5 7.Bc4 Bb4 8.Bc3 Bc3 9.Nc3 0–0 10.Nd5 Ne4 11.0–0 c6 12.Ne3 Ndc5 13.Bf7 Kf7 14.Ne5 Kg8 15.Qh5 Be6 16.N3g4 Qg5 17.Qg5 Ng5 18.Ne3 Rad8 19.f4 Nge4 20.f5 Bc8 21.Rab1 Nd2 22.Rbd1 Nf1 23.Rf1 Rde8 24.N3g4 Bf5 0–1. guest845 – guest144, ICC, 1999.

5.Be2 Ne4+= 6.0–0 b5 (6...Nc6 7.d4+=) 7.a4= ba4 8.Ra4 Qd7 9.c4 Bb7 10.c5 dc5 (better is 10...Be7+=) 11.bc5?? (better is 11.Ne5 Qf5 12.Bg4+=) 11...Nc5–/+ 12.Ne5?? (better is 12.Ra5 e4 13.Ne5–/+) 12...Qe6 (better is 12...Qa4 13.Bc4 Qd1 14.Bf7 Ke7 15.Rd1 Nbd7–+) 13.Bc4 Qe7? (better is 13...Bd5 14.Re1 Be7+/–) 14.Re1+– Ne6 (14...f6 15.Nf7 Na4+–) 15.Ba3 (better is 15.Nf7 Qf7 16.Be6+–) 15...Qg5+= 16.Bf8?? (better is 16.g3 Ba3 17.Ra3+=) 16…Qg2# (16...Kf8 17.g3 Qf6 18.Qb3+–; 16...Rf8 17.f3 Qe7 18.Nf7+/–) 0–1. Neumann,Frank (1650) – Zschau,Riccardo (1935), RSS7E easy–61, 2007.

5.Nc3 Nc6

6.a3 Be7 7.Bc4 0–0 8.d4 ed4 9.Nd4 Ne5 10.Bb3 c5 11.Nf5 Bf5 12.ef5 c4 13.f4 (13.Ba2!?=) 13...cb3–/+ 14.fe5 bc2 15.Qc2 de5 16.0–0 Rc8 17.Qe2? (better is 17.Qf2!?–/+) 17...Qd4–+ 18.Kh1 Rfe8 (better is 18...Rc3 19.Rfe1 e4–+) 19.Rad1–/+ Qg4 20.Rfe1 Qf5 21.Nd5 Nd5 22.Rd5 f6 23.Be5? (23.Rd3 Qg6–+) 23...Bb4 (better is 23...Bf8 24.g4 Qg6 25.Qe3–+) 24.Red1?? (better is 24.ab4 Re5 25.Re5 fe5 26.b5–+) 24...Bf8 (24...Re5?! 25.Re5 fe5 26.ab4–+; 24...fe5?! 25.ab4 Rc2 26.Qe1–+; 24...Ba3?! 25.Qa2 Qc2 26.Qa3 Re5 27.Rd7–+) 25.Qa2 fe5 26.Rd7 (26.Re5 Qf7 27.Qf7 Kf7 28.Rf5 Kg6–+) 26...Qe6 27.Qb2 b5 28.h3 Re7 (better is 28...Bc5!? 29.R7d3–+) 29.R7d6 Qc4 30.Ra6 b4 31.Ra4 Rf7 32.Qb1 (32.ab4 Rf1 33.Rf1 Qf1 34.Kh2 e4–+) 32...Qc6 33.Qb3 ba3 34.Rf1 Rcc7 35.Rf7 Rf7 36.Ra7 Qe8 37.Rb7 g6 38.Qd5 e4 39.Qb3 (39.Rb1–+) 39...e3 40.Rf7 Qf7 41.Qe3 a2 42.Qc1 Qb3 0–1. Romanov,Evgeny – Zenkov,Gennadiy, Kemerovo RUS, Regional Ch, 2013.

6.b5 ab5 7.Bb5 Bd7 8.0–0 Be7 9.Qe2 (9.Re1 Bg4=) 9...0–0 10.a4 (10.Rfb1 Re8=) 10...Be6 (10...Nd4 11.Nd4 ed4 12.Nd5=) 11.Bc6+= bc6 12.a5 (12.d4 Ra5+=) 12...Rb8 (12...Bg4 13.h3 Bh5 14.Rfb1+=) 13.Rfb1+= Rb4 14.Ba3 (14.Ng5 Bg4 15.Qe3 Nd7=) 14...Bc4 (14...Rb1 15.Rb1 Qa8 16.Ne5=) 15.d3+= (worse is 15.Rb4 Be2 16.Ne2 d5 17.Ne5 Bb4 18.Bb4 c5 19.Bc5 Re8–/+) 15...Rb1 16.Rb1 Be6 17.d4 ed4 18.Nd4 c5 (18...Bd7 19.a6+=) 19.Ne6+/– fe6 20.Rb7 (20.Rb7 Qd7 21.Bb2+=; 20.a6 Kh8+/–) 1–0. Woschkat,Karl_Heinz – Lazarevic,Liljana, 1997.

6.b5 ab5 7.Bb5 Bd7 8.d3 Na7 9.Bd7 Qd7 10.Rb1 b6 11.0–0 Be7 12.Bc1 h6 13.d4 Nc6 14.d5 Na5 15.Rb4 0–0 16.Be3 Rab8 17.Qd3 Qc8 18.Rfb1 Ng4 19.h3 Ne3 20.Qe3 f5 21.ef5 Qf5 22.Re4 Rf6 23.Qd2 Rg6 24.Kh1 c6 25.dc6 Nc6 26.Qd5 Kh7 27.Na4 Rf8 28.Qc6 Rg2 29.Kg2 Qf3 30.Kh2 Qf2 31.Kh1 Qf3 32.Kh2 Bh4 33.Rg1 Qf2 34.Kh1 Rf3 35.Rh4 Qh4 36.Qf3 Qa4 37.Qb7 Qb5 38.Qg7 1–0. mrkt – bic_bozi, GameColony.com, 2002.

6.b5 ab5 7.Bb5 Bd7 8.d3 Be7 9.0–0 0–0 10.Rb1 Nb4 11.Bc4 c6 12.a3 Na6 13.a4 Qa5 14.Qd2 b5 15.ab5 cb5 16.Nb5 Qd2 17.Nd2 Nc5 18.f4 ef4 19.Rf4 Ne6 20.Rf5 Bb5 21.Rb5 Ng4 22.Rb7 Rfe8 23.g3 Bg5 24.Nf1 Ne3 25.Be6 Re6 26.Bc1 Ree8 27.Be3 Be3 28.Ne3 h5 29.Nf5 1–0. mrkt – fonderflopis, GameColony.com, 2002.

6.b5 Nd4 7.ba6 ba6 8.Nd4 ed4 9.Nd5 =.

5.Nc3 Be7

6.d4 0–0 7.a3 ed4 8.Nd4 =.

6.d4 ed4 7.Nd4 c5 8.bc5 dc5 9.Nf3 Qd1 10.Rd1 Bg4 11.Nd5 Nd5 12.ed5 Bf3 13.gf3 f6 14.d6 Bd8 15.Rg1 g6 16.Rg4 Kd7 17.Re4 Nc6 18.Bh3 1–0. wampo (1930) – NN, GameColony.com, 2002.

6.d4 Bg4 7.de5 de5 8.Qd8 Bd8 9.Ne5 Be6 10.0–0–0 Nc6 11.Nc6 bc6 12.f4 0–0 13.f5 Bd7 14.Bc4 Be7 15.e5 Nd5 16.Nd5 cd5 17.Bd5 Rab8 18.Bf7 Rf7 19.e6 Be6 20.fe6 Bg5 21.Kb1 Re7 22.Rd7 h6 23.h4 Rd7 24.ed7 Bd8 25.Re1 Kf7 26.Re8 c6 27.c3 Bc7 1–0. mrkt – emodim, GameColony.com, 2002.

5.Nc3 Bg4

6.h3 Bf3 7.Qf3 Nc6 8.a3 Nd4 9.Qd1 d5 10.ed5 Nd5 11.Bc4 c6 12.Nd5 cd5 13.Bd4 ed4 14.Bb3 Qe7 15.Kf1 Rd8 16.Qf3 Qg5 17.Re1 Be7 18.h4 Qf6 19.Bd5 0–0 20.Qf6 Bf6 21.Bb7 Rd6 22.g4 g6 23.g5 Bd8 24.Rg1 Bb6 25.Ba6 d3 26.Bd3 f6 27.Rg2 fg5 28.hg5 Rc8 29.a4 Ra8 30.a5 Ba5 31.Ra1 h5 32.gh6 Kh7 33.ba5 Rg8 34.a6 Kh6 35.a7 g5 36.a8Q Ra8 37.Ra8 Rd3 38.cd3 1–0. mrkt – NN, GameColony.com, 2002.

6.h3 Bf3 7.Qf3 Nc6 8.a3 Nd4 9.Qd1 Be7 10.Bc4 b5 11.Ba2 c5 12.d3 cb4 13.ab4 a5 14.Nd5 a4 15.Bd4 ed4 16.Nf6 Bf6 17.Qh5 0–0 18.Qb5 Be5 19.Bd5 Ra7 20.Ra4 Ra4 21.Qa4 Qc7 22.0–0 Qe7 23.f4 Bf6 24.Qc6 h6 25.b5 Qd8 26.b6 Qb8 27.b7 Kh7 28.Qd7 Re8 29.Ra1 Re7 30.Qf5 g6 31.Qf6 Rb7 32.Bf7 Rb1 33.Kf2 Ra1 34.Qg6 Kh8 35.Qh6 1–0. wesolyPolak – NN, GameColony.com, 2002.

6.h3 Bf3 7.Qf3 Be7 8.Bc4 Nc6 9.Nd5 a5 10.b5 Nb4 11.Nf6 Bf6 12.Rc1 c5? 13.a3 Nc2 14.Rc2 b6 15.Bd5 Rb8 16.Bc6 Ke7 17.0–0 Bg5 18.Qg4 g6 19.Qg5 Ke6 20.Bd5 Kd7 21.Qg4 Ke8 22.f4 Kf8 23.fe5 Qe7 24.ed6 Qd6 25.Rf7 (25…Ke8 26.Be5 Qe7 27.Re7 Ke7 28.Qe6 Kd8 29.Bf6 Kc7 30.Qc6#) 1–0. NN – COMP, 2003.

6.h3 Bh5 7.g4 Bg6 8.d3 Nc6 9.a3 Be7 10.g5 Nh5 11.Nd5 f6 12.Ne7 Qe7=+ 13.Nh4 Nf4 14.Ng6 Ng6 15.Bc1 fg5 16.Rg1 Nf4 17.Qg4 h6 18.Bf4 ef4 19.h4 Ne5 20.Qh5 g6 21.Qe2 g4 22.Rh1 h5 23.0–0–0 0–0–0 24.Qd2 f3 25.d4 Nc6 26.Bc4 Qf6 27.Qe3 Rhe8 28.b5 ab5 29.Bb5 d5 30.e5 Qe6 31.Qc3 Re7 32.Qc5 Kb8 33.Bc6 bc6 34.Kd2 Kc8 35.Rb1 Kd7 36.Rb7 Ree8?? 37.Rc7!! Kc7 38.Rb1 Ra8+– 39.Qb6 Kd7 40.Qb7 Kd8 41.Qa8 Ke7 42.Rb7 Kf8 43.Qa7 Qf5?? 44.Rh7 Qf4 45.Kc3 (45…Qd4 46.Kd4 c5 47.Kd3 c4 48.Kd4 Re7 49.Qe7 Kg8 50.Qf7#) 1–0. pozarski (2080) – 1beercan (1720), GameColony.com, 2002.

3.e4 b6

4.Bb5 Bd7 5.Bc4 Nf6 6.Qf3 Bg4 7.Qb3 Qd7 8.Na3 Be7?? 9.Bf7+– Kd8 10.f3 Bh5 11.Be6 Qc6 12.Nh3 h6 13.0–0 Be8 14.d4 ed4 15.Bd4 Bd7 16.Bf6 Bf6? 17.Bd5 Qa4 18.Ba8 Qb3 19.ab3 Ba1 20.Ra1 c6 21.b5 Kc7 22.Bc6 Bc6 23.bc6 Nc6 24.Nb5 Kb8 25.Nd6 Kc7 26.Nf5 g5 27.c3 Kb7 28.Nd6 Kc7 29.Nb5 Kb7 30.Nf2 Rd8 31.Ng4 h5 32.Nf6 h4 33.g4 a6 34.Na3 Rd3 35.Kg2 Rc3 36.Rb1 Ne5 37.Nc4 Nf3? 38.Nd5 Rd3 39.Ncb6 Ne5 40.Nc4 Ng4 41.Na5 Kb8 42.Nc6 Kc8 43.Ncb4 h3 44.Kg1 Rd2= 45.Rc1 Kd7 46.Rc2?? Rd1 0–1. Seimi Agus Eion – sandtheory, ChessWorld.net, 2005.

4.Nc3 Bb7 5.Bc4 Nf6 6.Nd5 Nbd7 7.Nf3 Be7 8.Ng5 0–0 9.Ne7 Qe7 10.0–0 Ne4 11.Ne4 Be4 12.Re1 d5 13.Bd3 Bd3 14.cd3 Qb4 15.Rb1 Qd6 16.Qe2 Rfe8 17.d4 e4 18.a4 f5 19.Ra1 a5 20.Ba3 Qf6 21.Qb5 c6 22.Qb2 f4 23.f3 ef3 24.Re8 Re8 25.d3 Re2 26.Qc1 Qd4 27.Kh1 fg2 0–1. bambinik – Guest7012, internet, 2001.

4.c4 Bb7 5.Nc3 Nf6 6.Nf3 (6.Bd3 a5 7.b5 Nbd7=) 6...Ne4=+ 7.Ne4 Be4 8.d4 Qf6 9.de5 (9.Be2 Nd7=+) 9...de5–/+ 10.Be5?? (10…Bb4 11.Nd2 Qe5 12.Be2–+; Better is 10.a3 Nd7 11.Bd3 Bf3 12.Qf3 Qf3 13.gf3–/+) –/+. kamera – ally44, GameColony.com, 2002.

4.Bc4 Bb7 5.Nc3 Nc6 6.b5 Nd4 7.Nd5 Bd5 8.Bd5 Rc8 9.Bd4 Ne7 10.Bc3 Nd5 11.ed5 Be7 12.Nf3 Bf6 13.0–0 0–0 14.Rb1 e4 15.Bf6 Qf6 16.Ne1 Qe5 17.c4 Qd4 18.Qe2 Rfe8 19.Nc2 Qf6 20.Rb3 Qg5 21.Re3 Re5 22.Nd4 c6 23.Nc6 Rf5 24.Re4 Qg6 25.Ne7 Kf8 26.Ng6 hg6 27.Re1 Kg8 28.Re8 Re8 29.Qe8 Kh7 30.Qe7 Kh6 31.Qh4 Rh5 32.Qf4 g5 33.Qd6 g6 34.Qf6 Rh4 35.Qh8# 1–0. TriAngel – kcsparky, ICC 1999.

4.Nf3 Nf6 5.Nc3 Be7 =.

4.d4 Nd7

5.Bc4 Ngf6 6.Nd2 Bb7 7.Qf3 Be7 8.0–0–0 0–0 9.Ne2 Qe8 10.h4 a5 11.b5 ed4 12.Bd4 Ne5 13.Be5 de5 14.Ng3 Bc5 15.Nf5 Rd8 16.Qg3 g6 17.f3 Kh8 18.Qg5 Nh5 19.Ne3 Nf4 20.Qf6 Kg8 21.Ng4 Be7 22.Nh6 1–0. themonkey (1865) – Valiantangel (1755), GameColony.com, 2002.

5.Bc4 Ngf6 6.Nd2 Bb7 7.Qf3 g6 8.0–0–0 Bg7 9.de5 de5 10.Ne2 0–0 11.Kb1 Qc8 12.g4 c5 13.g5 Nh5 14.Bc3 cb4 15.Bb4 Nc5 16.Nc3 Nf4 17.Nd5 Qd8 18.Nf4 ef4 19.Bc5 bc5 20.Qf4 Qb6 21.Nb3 Qb4 22.Rd7?? Qc4 23.Rb7 Qc3! 24.e5 Be5 25.Qc1 c4 0–1. Trkn – Chuck, itsyourturn.com, 2001.

3.e4 c6

4.Nc3 Qb6 5.b5 Nf6 6.Nf3 a6 7.a4 ab5 8.ab5 Ra1 9.Qa1 Bg4 10.Be2 Be7 11.bc6 bc6 12.0–0 0–0 13.Rb1 Nbd7 14.d4 ed4 15.Na4 Qc7=+ 16.Nd4 Be2 17.Ne2 Ra8 18.Nec3 Nc5 19.Re1 Nfd7 20.Rd1 Bf6 21.Qa3 Na4 22.e5 Be5 23.Na4 Bb2 24.Qb2 Ra4 25.Rb1 d5 26.Re1 Nf6 27.Rb1 h6 28.Qb3 Re4 29.Qa2 Ng4 30.Qa8 Kh7 31.g3 0–1. EXchess 3.11 – Fritz 8, 2005.

4.Nc3 d5 5.a3 d4 6.Nb1 Nf6 7.d3 Bd6 8.Nf3 0–0 9.Be2 a5 10.0–0 ab4 11.a4? b5 12.a5 Ra5 13.Ra5 Qa5 14.Nbd2 Be6 15.Nb3 Bb3 16.cb3–/+ Nbd7 17.Qa1 Qa1–+ 18.Ra1 Nc5 19.Nd2 Nfd7 (19...Nfd7 20.Ra7 Bb8–+) 0–1. lesbian11 – circonio, Live Game Caissa's Web, 2005.

4.Nc3 Nf6 5.a3 Be7 6.Nf3 0–0 7.d4 Bg4 8.Be2 ed4 9.Qd4 c5 10.Qd2 Nc6 11.b5 Nd4 12.Nd4 cd4 13.Qd4 Bh5 14.Bc4 Qa5 15.0–0 a6 16.Nd5 ab5 17.Ne7 Kh8 18.Qf6! gf6 19.Bf6# 1–0. Trkn – guest3417, ICC, 2004.

4.c4 Nf6=+ 5.Nf3 Be7 6.d3 Qb6=+ 7.Qd2 a5 8.a3 Bg4 9.Be2 h6 10.0–0 Nbd7 11.Nc3 ab4 12.ab4 Ra1 13.Ba1 0–0 14.Na4 Qa6 15.c5?? Qa4–+ 16.Bc3 Qa8 0–1. TeaCzar – Kevin the fruitbat, ChessWorld.net, 2009.

4.Bc4 d5 5.Bb3 b5 6.ed5+/– Bb4 7.Be5 cd5?? 8.Bg7+– Ke7 9.Bh8 Nd7 10.Qg4 Bc5 11.Bd5 Ngf6 12.Bf6 Kf6 13.Nf3 Rb8 14.Qg5 1–0. pokes – rickitikitavi, net–chess.com, 2002.

4.Bc4 Qd7 5.Nf3= b5 6.Bb3 Nf6 7.Nc3 Na6 8.a3 h6 9.d4+= Be7? 10.de5+– de5? 11.Ne5 Qc7 12.Nf7 Rf8 13.0–0?? c5?? 14.Nd5 Qd6 15.Nd6 Bd6 16.Nf6 (16.Nf6 Rf6 17.Bf6 gf6 18.Qd6+–) 1–0. sgbrito (2340) – npettigrew, net–chess.com, 2003.

4.Bc4 Nf6 5.h3 Be7 6.d3 0–0 7.Nf3 b5 8.Bb3=+ Na6 9.a3 Nc7 10.Nbd2 Bb7 11.0–0 h6 12.d4 ed4= 13.Bd4 d5 14.e5 Nfe8 15.c3 Ne6 16.Be3 f5 17.ef6 Bf6= 18.Nd4 N8c7 19.Qg4 Ng5 20.Nf5 Bc8=+ 21.Bc2 g6+/– 22.Qf4?? gf5 23.Qg3 Kh8 24.h4 Nf7 25.Qg6 Qd7?? 26.Qf6+– Kg8?? 27.Qg6 Kh8 28.Bd4 (28.Bd4 Ne5 29.Be5 Rf6 30.Bf6 Qg7 31.Qg7#) 1–0. Abuloai – dusterstar, internet, 2006.

4.d4 Qb6 5.Bc3 Nf6 6.Qd3 ed4 7.Bd4 Qb4 8.Bc3? Qe4–+ 9.Qe4 Ne4 10.Bb2 d5 11.Nc3? Bb4 12.Nge2 d4! 13.Nd4 Nc3 14.a3 Na4?? 15.ab4–/+ Nb2 16.Ra2 0–0 17.Rb2 Re8 18.Be2 a5 19.Ra2 b6 20.c4 Re4 21.Nc2 Ba6 22.Ne3 ab4 23.Rd2 Re8 24.0–0 Ra7 25.Ra1 c5 26.Nd5 Rd7 27.Rb2? Rd6 28.f4? Bb7 29.Bf3 Rde6 30.Kf2 Bd5–+ 31.cd5 Re3 32.Ra8 Nd7 33.Re8 Re8 34.Re2 Kf8 35.Re8 Ke8 36.Ke3 Nf6 37.Kd3 Kd7 38.g4 h6 39.h4 Kd6 40.g5 Nd5 41.Bd5 Kd5 42.f5 Ke5 43.f6 g6 44.gh6 Kf6 45.Kc4 g5 46.hg5 Kg6 47.Kd5 b3 48.Ke5 b2 49.h7 Kh7 50.Kf6 b1Q 51.Kf7 Qf5 (51...Qf5 52.Ke8 c4 53.Kd8 Qg5 54.Kd7 Qd5 55.Kc7 b5 56.Kc8 c3 57.Kc7 b4 58.Kb8 c2 59.Ka7 Qa5 60.Kb7 c1Q 61.Kb8 Qcc7#) 0–1. Romischke,W – von Pein, 1984.

4.d4 Nd7 5.de5 d5 6.ed5+/– cd5 7.Qd5 Ne7 8.Qb3 Qb6 9.a3 Nc6 10.e6 Bb4?? 11.ab4 fe6 12.Qe6 Ne7 13.Qb6 Nb6 14.Bb5 Bd7 15.Bd7 Nd7 16.Nc3 0–0–0 17.0–0–0 Nb6 18.Rd8 Rd8 19.Nge2 Nc4 20.Rd1 Rd1 21.Nd1 Nb2 22.Kb2 b5 23.c3 Nd5 24.Nd4 a6 25.Ne3 Nf4 26.g3 Nd3 27.Kb3 Nf2 28.Nd5 Kb7 29.Nf4 Nd1 30.c4 bc4 31.Kc4 Ne3 32.Kc5 Ng4 33.h3 Nf6 34.g4 Nd7 35.Kd6 Nf6 36.g5 Ne4 37.Kd5 Ng5 38.h4 Nf7 39.Nfe6 g6 40.Nc5 Kb6 41.Nd7 Kc7 42.Nf6 h6 43.Ne6 Kb6 44.Nd7 Kb5 45.Nec5 Kb4 46.Na6 Kc3 47.Ndc5 g5 48.hg5 Ng5 49.Nc7 h5 50.N7e6?? h4 51.Ng5 h3 52.Nh3 Kd2 53.Ke5 Ke2 54.Ke4 Kf1 55.Kf4 Kg2 56.Kg4 Kh2 57.Kh4 Kg2 58.Ng5 Kf2 59.Kh5 Ke3 60.Kh6 Kd4 61.Kg6 Kc5 ˝–˝. b4_player – NN, GameColony.com, 2002.

4.Nf3 a5 5.b5 Nf6 6.Nc3 Be7 7.Bc4 0–0 8.0–0 Bd7 9.bc6 Bc6 10.a4 Ne4=+ 11.Ne4 Be4 12.d3 Bc6–/+ 13.Bb3 Nd7 14.Re1 Bf6 15.d4 ed4 16.Nd4 Nc5 17.Nc6 bc6–/+ 18.Bf6 Qf6 19.Re3 d5–+ 20.Rg3 Ne4 21.Rf3 Qg6 22.c4–/+ dc4 23.Bc4 Rad8 24.Rd3? Rd3 25.Bd3=+ Qe6 26.Qc2 Nf6–/+ 27.Rc1 Rc8?? 28.h3 h6?? 29.Bf5+– Qe8 30.Bc8 Qc8 31.Qc6 Qd8 32.Qb7 Qd4 33.Qa8 Kh7 34.Qa5 Qf4 35.Qc7 Qa4 36.Qf7 Qd4 37.Rc7 Qa1 38.Kh2 Qe5 39.g3 Ne4 40.Re7 Ng5 41.Re5 Nf7 42.Rf5 Nd6 43.Re5 Nf7 44.Re7 Nd6 45.g4 Kg8 46.h4 Kf8 47.Rd7 Ne4 48.Kg2 Nf6 49.Rd4 h5 (49...g6 50.Kg3+–). taiger (1785) – sergeiv, internet, 2006.

4.f4 ef4–/+ 5.Nf3 Nf6 6.e5 de5–+ 7.Bc4 b5 8.Bb3 Bb4 (8...Bb4 9.Ne5 0–0–/+; 8...Nbd7 9.0–0–+) 0–1. Roscher – Pommerel,Wim, corr SOK–89–45, 1989.

4.h3 Be6 5.Be2 Nd7 6.Nf3= Ngf6 7.d3 Be7 8.Qd2 0–0 9.Nc3 d5–/+ 10.b5 d4 11.Ng5? h6 12.Ne6 fe6 13.bc6 bc6 14.0–0? c5?? 15.Na4= Nb6 16.Nb6 ab6 17.a4 Qd7 18.a5 Qc6 19.a6 b5=+ 20.f3 Ra6–/+ 21.Rfc1 Rfa8 22.Qe1 c4 23.Ra6 Ra6 24.dc4 bc4 25.Ra1 Ra1 26.Qa1 Qc5 27.Qa6?? Qd6?? 28.Qa8? Kh7–/+ 29.Bc4 Nd7?? 30.Ba3?? Qa3–+ 31.Qe8 Bg5 32.Qd7 Qc1 33.Bf1 Be3 34.Kh2 Qf1 35.h4 Bf4 36.Kh3 Qh1 37.Kg4 0–1. novice1234 – leighcastle, ChessWorld.net, 2009.

4.Nc3 Nf6

5.a3 Be7 6.d4 Qc7 7.Nf3 Bg4 8.de5 de5 9.h3 Bh5 10.g4 Bg6 11.Bc4 Nbd7 12.Qd3 0–0–0 13.0–0–0 Nb6 14.Qe2 Nc4 15.Qc4 Kb8 16.Nh4 Rd1 17.Rd1 Rd8 18.Ng6 fg6 19.Qe6 Rd1 20.Nd1 Bd6 21.Ne3 b5 22.f3 Qd7 23.Qd7 Nd7 24.c4 a6 25.c5 Bc7 26.Kd2 Nf8 27.Nc2 Ne6 28.Ne1 Nf4 29.Nd3 Nd3 30.Kd3 Kc8 31.h4 Kd7 32.Bc3 Ke6 33.Bd2 Bb8 34.Bc3 Bc7 35.Bd2 Bb8 36.Bc3 Bc7 37.Bd2 ˝–˝. Caissa – 300SPARTANS, Live Game Caissa's Web, 2004.

5.a3 Be7 6.d4 Qc7 7.Nf3 Bg4 8.de5 de5 9.h3 Bh5 10.g4 Bg6 11.Bd3 Nbd7 12.g5 Nh5 13.h4 h6 14.gh6 Rh6 15.Bc1 Rh8 16.Bd2 Nf8 17.Be3 Ne6 18.Rg1 Nhf4–/+ 19.Bc4 Bh4 20.Be6 Ne6 21.Rh1 Qe7 22.Qe2 a6 23.Qc4–/+ Kf8?? 24.Ne5 (24…Bh5 25.Nc6 bc6 26.Qc6=+; better is 24.Bc5!? Nc5 25.Qc5 Qc5 26.bc5 Bf2 27.Kf2+–) 1–0. Caissa – 300SPARTANS, Live Game Caissa's Web, 2004.

4.d4 ed4

5.Qd4 Qb6 6.Nf3 c5 7.bc5 dc5 8.Qa4 Bd7 9.Qb3+= Be6 10.Qb6+/– ab6 11.Bb5 Nd7 12.0–0 Ne7 13.Ng5 Nc6 14.f4 h6 15.Ne6 fe6 16.Nd2 0–0–0 17.Nc4 Kc7 18.Rad1 Nf6 19.Rd8 Kd8 20.Bc6 bc6 21.Rd1 Kc7+/– 22.Be5 Kb7 23.Rd8 b5 24.Rb8 Ka6+/– 25.Ra8 Kb7= 26.Rb8 Ka6 27.Nd6 Nd7 28.Ra8 Kb6 29.Nf7 Rh7 30.Rd8 Ne5 31.Ne5 Be7 32.Rd7 Bf6+/– 33.Ng6 Bd4 34.Kf1 h5 35.Re7 Ka5 36.Re6 Kb4 37.Ke2 Kc3 38.Kd1 h4 39.h3 Rh5 40.Ne7 g5 41.f5+– g4 42.Rg6 gh3 43.gh3 Rh7 44.Nc6 Rd7 45.Nd4 Rd4+/– 46.Ke2 Re4 47.Kf3 Re8 48.Rg2+– c4 49.Kf4 Kb2 50.f6 c3 51.Kf5 Ka2 52.f7 Rf8 53.Ke6 b4 54.Ke7 Rb8 55.f8Q Rf8 56.Kf8 b3 57.cb3 Kb3 58.Kg7 c2 59.Rg1 (59.Rg1 Kc4 60.Kf6+–) 1–0. Labahn,Wolfgang (2250) – Mordhorst,Henning (2275), Oberliga Nord N, 1998.

5.Bd4 h6 6.Be2 Qg5 7.g3 Na6 8.Nf3 Qg6 9.0–0 Qe4?? 10.Ba6+– Qg4 11.Re1 Be7 12.Be2 Qh3 13.Bg7 Rh7 14.Bd4 Bg4 15.Nfd2 Be2 16.Qe2 f6 17.Bf6 Nf6+/– 18.Qe7?? Re7–+ 19.Re7 Ke7 20.Nf3 Qf5 21.Nbd2 Qc2 22.Re1 Kf7 23.Kf1 Re8 24.Re8 (24.Ra1 Qd3 25.Kg2 Re2–+) 0–1. wood – smolla, Live Game Caissa's Web, 2005.

4.Nf3 Nf6

5.Nc3 Qb6 6.a3 a5 7.b5 Bg4 8.Na4 Qd8= 9.Bd3 cb5 10.Bb5+= Nc6 11.Qe2 Be7= 12.0–0 0–0 13.Qe3 Na7 14.Be2 Qc7 15.c4 Rfe8 16.Nb6+= Rad8 17.Nd5 Nd5 18.cd5 b5 19.Rfc1 Qb7 20.Qc3 Qb6 21.Ne5!+/– b4 22.ab4 ab4 23.Qc7 Qc7+= 24.Rc7 Be2 25.Raa7 Bf6 26.Nf7 Bb2 27.Nd8 Rd8 28.Rab7 Ra8 29.h4 Bf6 30.Rb4+/– Bd8 31.Rc6 Bh4 32.e5!+– Ra1 33.Kh2 Bg5 34.Rd6 Ra8 35.Rd4 Ra3 36.e6 Ra2 37.f4 Bf6 38.Rd7 Bb5 39.Rb4 Ra5 40.Rb7 Be8 41.d6 Rd5 42.d7 Bd7 43.Rb8 Bc8 44.Rc8 Rd8 45.Rd8 Bd8 1–0. Doctor? 3.0 – EXchess 3.11, 2005.

5.Nc3 Qb6 6.Ba3 Be6 7.Ng5 Bg4 8.Be2 Be2 9.Qe2 Be7 10.0–0 Nbd7 11.Na4 Qc7 12.d4 b5 13.de5=+ Ne5 14.Nc3 Nfd7 15.Qh5 Nf6 16.Qd1?? Nfg4 17.Nf3 Nf3 18.Qf3= h5 19.Qg3 Bf6 20.Bb2 Qb6 21.h3 Ne5 22.a4 h4 23.Qf4 Nc4 24.a5 Qb8 25.Qc1 Nb2 26.Qb2= 0–0 27.Qa3 a6 28.Rad1 Re8 29.Rfe1 Re6 30.Re2 Qa7 31.Red2 Be5 32.Ne2 Rae8 33.Qb3 Rf6 34.Rf1 c5 35.Qe3 Rfe6 36.Rfd1 Bf6 37.f3 Qe7 38.Qb3 Bg5 39.Rd5 Rg6 40.bc5 dc5 41.Rd7 Qe6 ˝–˝. Kellerer – Pommerel,Wim, corr CiF–TT, 1988.

5.Nc3 Be6 6.d4 ed4 7.Qd4 Be7 8.Ng5 Qc7 9.Ne6 fe6 10.Bc4 d5 11.Be2 0–0 12.0–0 Na6 13.a3 c5 14.bc5 Qc5 15.Qc5+= Nc5 16.ed5 Nd5 17.Nd5 ed5 18.Rfd1 Rad8 19.Bf3 Ne4= 20.Be4 de4 21.Bd4 Bf6 22.Bf6 Rd1 23.Rd1 gf6 24.Rd7 ˝–˝. Trkn – Marcus, itsyourturn.com, 2000.

5.Bc4 Bg4 6.h3= Bf3 7.Qf3 Qe7 8.0–0 d5 9.ed5+/– cd5 10.Bb3 d4 11.Re1+/– Nc6 12.c3 dc3 13.Bc3+/– 0–0–0 14.Ba4 Nb8?? 15.Na3 Nd5?? 16.Rac1 Nc7 17.Be5 Nba6 18.b5 f6 19.Bg3 Qa3+– 20.Qg4 Kb8 21.Bb3?? Nc5 22.Bc7 Ka8?? 23.Bd8+– Nd3 24.Qc8# 1–0. guest174 – guest430, ICC, 1999.

5.d3 Be7=+ 6.a3 0–0 7.Nbd2 Nbd7 8.Be2 Re8 9.0–0 Qc7 10.c4 c5 11.Re1 a6 12.Qb3 b5 13.d4 cd4 14.cb5 ab5 15.Bb5 Rf8 16.Nh4 Nb6 17.Rac1 Qd8 18.Nf5 Bf5 19.ef5 Rc8 20.a4 Nbd5 21.Bc6 Nf4 22.g3 Nh3 23.Kg2+– (23.Kg2 Qb6 24.a5+=) 1–0. NZ cricketer – brawn, ChessWorld.net, 2005.

4.Nf3 Bg4

5.b5 Nf6 6.Nc3 Be7 7.h3 Bh5 8.Be2 cb5 9.Bb5 Nc6 =.

5.Nc3 Nf6 6.Be2 Nbd7 7.a3 Be7 8.0–0 d5 9.d4 de4 =.

5.Bc4 Nf6 6.h3 Bh5 7.Nc3 b5 8.Be2 a5 9.a3 Na6 =.

5.Bd3 Qb6 6.a3=+ Nf6 7.0–0 a5 8.b5 cb5 9.Nc3 Nc6 =.

5.Bd3 Be7 6.Nc3 Nf6 7.h3 Be6 8.0–0 0–0 9.a3 Qb6 =.

5.Bd3 h6 6.0–0 Nf6 7.Nc3 Be7 8.Qe2 0–0=+ 9.Nd1 Na6 10.Ba6 ba6 11.Ne3 Bf3 12.Qf3+/– Rb8 13.a3 c5 14.Bc3+– Qd7 15.bc5 dc5 16.Be5 Qd2? 17.Rfd1 Qa5 18.Bb8 Rb8 19.Qg3 Rc8 20.Nf5 Re8 21.Qg7 1–0. marekt – eagledrver, ChessWorld.net, 2008.

5.d4 d5 6.h3 de4 7.hg4 ef3 8.a3 ed4 9.Qf3 Qe7 =.

5.Be2 a5 6.b5 Nf6 7.Nc3 Be7 8.d4 Bf3 9.Bf3 Qb6 =.

5.h3 Bh5 6.a3 f5 7.d3 Bg6 8.ef5 Bf5 9.Nc3 Nf6 =.

3.e4 Nc6

4.a3 Be7 5.Nf3 Nf6 6.Bd3 0–0 7.0–0 Bg4 8.h3 Bh5 9.Nc3 Nd4 10.g4 Nf3 11.Qf3 Bg6 12.Qe3 h6 13.b5 c6 14.bc6 bc6 15.Rab1 Nh7 16.Ne2 Bg5 17.f4 ef4 18.Nf4 Bf4 19.Rf4 Re8 20.Qd4 f6 21.Bc4 Kh8 22.d3 Ng5 23.Kg2 Ne6 24.Be6 Re6 25.h4 Re7 26.h5 Bf7?? (better is 26...Bh7 27.Rf6! Re4 (27...gf6?? 28.Qf6 Kg8 29.Qh8 Kf7 30.Qh7 Ke8 31.Qg6 Kd7 32.Bf6+–) 28.Qd6 Rg4 29.Kf3 Rg5 30.Qd8 Rd8 31.Rc6 Rh5+=) 27.Rf6!+– Re4 (27...gf6 28.Qf6 Mate attack) 28.Rh6 (28.Rf7?! Rd4 29.Bd4 Qg5=) 28...Kg8 29.Qg7# 1–0. Janek – Rafael, internet, 2016.

4.a3 Qg5 5.c4 Nf6=+ 6.Nf3 Qf4 7.g3 Qe4–/+ 8.Be2 Qf5 9.Nc3=+ Ne4 10.Ne4 Qe4+= 11.0–0 Bh3 12.Re1+= Nd4?? 13.Bf1 Qf3 14.Bh3= Qd1 15.Rad1? Nf3–+ 16.Kg2 Ne1 17.Re1 Be7 18.c5 0–0–+ 19.cd6 cd6 20.d4 Bf6 21.de5 Be5 22.Be5 Rfe8?? 23.Bc3+/– Re1 24.Be1 d5 25.Bc3 Rd8 26.f4 d4 27.Bd2 Re8 28.Kf3 d3? 29.Bd7?? Re2+= 30.Be3 Rh2 31.Bb5 d2 32.Be2 b6 33.Bd2+/– f6 34.g4 h6 35.g5 hg5= 36.fg5 fg5 37.Bg5 Kf7 38.Bf4 Rh3 39.Ke4 Ra3= 40.b5 Ra4 41.Kd5?? Kg6 42.Kc6?? Kf5 43.Bc1 g5=+ 44.Kb7? g4–+ 45.Bd3 Ke5 46.Bb2 Kf4 47.Bc1 Kf3 48.Bf5 g3 49.Bh3 g2 50.Bg2–/+ Kg2 51.Be3 Kf3 52.Bb6 ab6 53.Kb6 Ke4 54.Kb7?? Kd5 55.b6 Kc5 56.Kc7= Rc4 57.b7 Kb5 58.Kb8?? Kb6 59.Ka8 Ra4 60.Kb8 Rc4 61.Ka8= Ra4 62.Kb8 Rc4 63.Ka8= Ra4 ˝–˝. Nautiluschess – olinda, ICS blitz, 2000.

4.b5 Nb4 5.c3 Nd3 6.Bd3 Be7 7.Be2 Nf6 8.d3 0–0 9.c4 c6 10.bc6 bc6 11.Bc3 d5 12.cd5 cd5 13.Bd2 de4 (13...de4 14.de4 Ne4+/–). pinecrest1981 – BigK, Live Game Caissa's Web, 2005.

4.Bb5 Nf6 5.Bc6 bc6 6.d3 d5 7.ed5 cd5 8.Be5 Bb4 9.Bc3 Rb8 10.Bb4 Rb4 11.h3 0–0 12.Nf3 Re8–+ (12...Re8 13.Kf1 c5–+) 0–1. Lieberman,Jason Ross – Plinke,Robert, compuServe, 1994.

4.Nc3 Nf6 (--> 3.e4 Nf6 4.Nc3 Nc6).

4.Bc4 Nb4 5.Qf3 Nf6–/+ 6.Nc3?? Nc2–+ 7.Kd1 Na1 8.Nd5 Bg4 9.Nf6= Qf6 10.Qg4 Qf2 11.Ne2 Be7 12.Ba1 Qh4 13.Qf3 0–0=+ 14.Ng3 Qh6 15.Nf5+= Qf6 16.Ne7 Qe7= 17.Be2 Qf6 18.h4 Qf3 19.Bf3=+ Kh8 20.h5 f5 21.h6 f4 22.d4+= gh6 23.de5+– de5 24.Be5 Kg8 25.Rh6 Rad8 26.Ke1 c6 27.Bd6 Rf7 28.e5+– Kg7 29.Rh5 Kg6 30.Rh4 Re8?? 31.Be4 Kg5+/– 32.Rh3 h5 33.Bf3 Rd7? 34.Rh5+– Kg6 35.Rh4 Rd6 36.Be4?? Kg5–+ 37.Rh7 Rde6 38.Rg7 Kh6?? 39.Rg4?? Re5–+ 40.Rf4 Re4 41.Re4 Re4 42.Kf2 Ra4 0–1. Nautiluschess – Headbanger, ICS blitz, 2001.

4.Ne2 Nf6 5.g3 Be7 6.Nbc3 0–0 7.Bg2 Bg4 8.f3=+ Be6 9.b5 Nb4?? 10.a3+– Nc2 11.Qc2 d5 12.ed5 Bd5 13.f4?? Bg2–+ 14.Rg1 Bf3 15.0–0–0 Bc5 16.Rde1 Qd6?? 17.fe5–/+ Qe5 18.Na4? Bd4?? 19.Nf4?? Qb5?? 20.Bd4+/– Ng4 21.Nc5 Rad8 22.Nce6?? Nf6?? 23.Nf8 Rf8?? 24.Ba7 Qa5? 25.Bc5 b6 26.Bf8 Kf8 27.Qc7 Qa3 28.Kc2 Qa2 29.Kd3 Qb3 30.Qc3 Qb5 31.Kc2 Qa4 32.Kd3 Qb5 33.Ke3 Nd5 34.Kf3 Nc3 35.dc3 Qc6 36.Kg4 Qc3?? 37.Nd5?? Qd4= 38.Nf4 b5?? (38...b5 39.Rd1 Qb6+–; 38...Qc3 39.Rc1 Qe5+–). joeuno – hulk, internet, 2005.

4.Nf3 f5 5.ef5 Bf5= 6.Nc3 Nf6 7.Bc4 Qd7 8.Nd5 Be7 9.0–0 Be6?? 10.Nf6?? Bf6= 11.Be6 Qe6 12.Ng5?? Qf5 13.Nf3 0–0 14.d3 e4 15.de4= Qe4 16.Re1 Qb4 17.Qd5 Kh8= 18.Bf6 Rf6 19.Ng5 Qf4–/+ 20.g3?? Qf2–+ 21.Kh1 Ne5 22.Qe4 Qf5–+ 23.Qh4?? Rh6 24.Nf7 Qf7 25.Qg4 Ng4 (25...Ng4 26.Re2 Qf3 27.Kg1 Qe2 28.h4 Rf8 29.Rf1 Rf1#) 0–1. guest1063 – guest1707, ICS blitz, 2000.

4.Nf3 Bg4 5.Bb5 a6 6.Bc6 bc6 7.h3 Bh5 8.d4 Be7 9.g4 Bg6+= 10.Nbd2 Rb8 11.a3 ed4 12.Nd4+/– c5?? 13.Nc6+– Be4 14.Nd8 Nf6 15.Ne4 Rd8 16.Nf6 Bf6 17.Bf6 gf6 18.bc5 dc5 19.Qe2 Kf8 20.0–0 1–0. jacksrking – jbumgar (1675), net–chess.com, 2009.

4.h3 Nb4 5.a3 Nc6 6.Bc4 Nh6 7.d3 Be7 8.Bc1 Bg5 9.Nf3 Bf4 10.Bf4 ef4 11.Qd2 Qf6 12.Nc3 0–0 13.0–0 Be6 14.Nd5 Bd5 15.Bd5 Rad8 16.Bc6+= bc6 17.Qa5 d5 18.e5 Qe6 19.Qa7 Rd7 20.Qa4 f6 21.d4 fe5 22.de5 Nf7 23.Rfe1 g5?? 24.h4 gh4+/– 25.Nh4?? Ne5 26.Nf3?? Rf5 27.Ne5 Re5= 28.Re5 Qe5 29.Rb1 Rg7 30.Qc6 f3 31.Rb8+/– Kf7 32.Qd7 Kf6 33.Qc6 Kf5 34.Rf8+/– Ke4?? 35.Qa4 d4 36.Qa8 Qd5 37.Re8 Kf4 38.g3 Rg3 39.fg3 Kg3 40.Qd5 (40…f2 41.Kf1 h5 42.Qg5 Kf3 43.Rf8 Ke4 44.Qf5 Ke3 45.Qf4) 1–0. PoPer – kaie1123, Live Game Caissa's Web, 2004.

4.a3 Nf6

5.Bc4 d5 6.Bb3 de4–/+ 7.h3 Bf5 8.Ne2 Bd6 9.Ng3 Qd7 10.c4 Nd4 11.Ba2 b6 12.Nc3 a5 13.Nce2 Ne2 14.Qe2–/+ ab4 15.d4? ba3–+ 16.Bc3 Bg6 17.d5?? 0–0 18.0–0 c6 19.Rfd1 c5 20.Bb1 Rfb8 21.Ne4 Ne4 22.Be4 Be4 23.Qe4 b5 24.Be5? Re8 25.f4 bc4 26.Qc4–/+ Ra4 27.Qc2 Be5 28.fe5 Re5 29.Qc5 h6 30.Ra2 g5 31.Qc6 Qc6–/+ 32.dc6 Rc5 33.Rd3 Rc6 34.Rda3 Ra3 35.Ra3 f5 36.g3 h5 37.Ra5=+ Rc1 38.Kf2= Rc2 39.Kf3 Kh7 40.Rf5= Kg6 41.g4 Rh2 42.Kg3 Rd2 43.Rf2 Rf2 ˝–˝. dugmak – color1972, ChessWorld.net, 2004.

5.Bc4 Be7 6.Ne2 0–0 7.f4 Ne4 8.d3 Nf6–/+ 0–1. sebastiengobbo (1645) – mgriffin (1615), net–chess.com, 2001.

5.d3 g6 6.Nf3= Bg7 7.Be2 0–0 8.0–0 b6 9.c4 Bb7 10.Nc3 Re8 11.Qc2 Nd4 12.Nd4 ed4 13.Nd5 c5 14.Bc1 a5 15.bc5 dc5 16.Bg5 h6 17.Bh4 g5+= 18.Bg3 Bd5 19.ed5 h5 20.h3 h4 21.Bh2 Ra7 22.f4 Rae7 23.Bf3 Bh6 24.Qd2 Re3 25.fg5 Bg5 26.Kh1 Nh7 27.Qc2 Bh6 28.Be4 Nf6 29.Bc7 Qe7 30.Bb6 Ne4 31.de4+/– Re4 32.Ba5 Re2 33.Qd1 Qe4 34.Rf3 Bf4 35.Qd3 Qe5 36.Raf1 Re3 37.Re3 Be3 38.Rf5 Qg3 39.Rh5?? Qg7?? 40.Rh4 Re5?! 41.Rg4 Bg5 42.h4 Qh6 43.Bd2 f6 44.Qh3 Kf7 45.hg5 Qh3 46.gh3 f5 47.Rg2 Kg6 48.h4 Re4 49.h5! Kg7 50.g6 Rh4 51.Rh2 Rg4 52.h6 Kg6 53.h7 (53.h7 Rg1 54.Kg1 f4 55.h8Q Kf5 56.Qh3 Kf6 57.Qe6 Kg5 58.Rg2 Kh4 59.Qg4#) 1–0. tightfist (2240) – geldridge (2325), net–chess.com, 2009.

4.b5 Nd4

5.c3 Nb5?? 6.Bb5+– (6...c6 7.Bf1+–) 1–0. var – porkchopp, Live Game Caissa's Web, 2004.

5.c3 Ne6 6.Bc4 Nf6–/+ 7.d3 Be7 8.Ne2 0–0 9.Ng3 c6 10.bc6 bc6 11.Ba3 a5 12.0–0 Ba6 13.Be6 fe6=+ 14.c4 d5 15.ed5 cd5 16.Be7 Qe7 17.cd5 ed5 18.Ne2 Bb7 19.Nbc3 d4 20.Ne4 Ne4–+ 21.de4 Qg5?? 22.Qb3+= Kh8? 23.Qb7+– d3 24.Ng3 d2 25.Nf5 Rad8 26.h4 Qg4 27.Ne3 Qh4 28.Nd1 Rf4 29.g3 Qg4 30.Ne3 Qg6 31.Rad1 Re4 32.Rd2! Qf6?? 33.Rd8 Qd8 34.Qe4 (34.Qe4 h6 35.Qe5+–) 1–0. pinecrest1981 – ChickenChaser, Live Game Caissa's Web, 2005.

5.Nc3 Nf6 6.Nf3 Bg4=+ 7.Be2 Bf3 8.Bf3= Nf3 9.Qf3 Be7 10.0–0+= 0–0 11.Ne2 Qd7 12.a4 h6 13.d4 ed4 14.Nd4+/– d5 15.e5 Ne4+= 16.Qd3 Nc5 17.Qg3 Ne4 18.Qf4 Bg5 19.Qf5 Qe7? 20.e6?? fe6= 21.Qe6 Qe6 22.Ne6+= Rf6? 23.Ng5 Nf2?? 24.Bf6 (24.Bf6 gf6 25.Ne6+–) 1–0. Orangattackman – BucFus, internet, 2005.

5.Bc4 Be7 6.Nc3 b6 7.Nd5 Nf6 8.Bd4 ed4 9.Nf3 Nd5? 10.Bd5+– Rb8 11.Bc6 Bd7+/– 12.Nd4 Bf6 13.c3 0–0 14.0–0 Bd4 15.cd4 Bc6 16.bc6 Qe8 17.Qc2 Qe6 18.d5 Qe5 19.d3 Qd4 20.Qc4 (20.Qc4 Qc4 21.dc4+/–) 1–0. kode (2345) – tata (2000), net–chess.com, 2008.

5.Ne2 Ne2 6.Qe2 Nf6 =.

5.Ne2 Ne2 6.Be2 Qh4= 7.Bf3 Nf6 8.d4 Ng4 =.

5.Ne2 Ne6 6.d4 Nf6 7.Nd2 Bd7 8.de5 de5 =.

5.Bd4 ed4

6.Bc4 Nf6=+ 7.Qf3 (7.Qe2 Qe7=) 7...g6 (7...Qe7 8.Ne2=+) 8.d3 Bg7 9.Nd2 0–0 10.Ne2 c5 (Better is 10...d5 11.Bd5 Bg4–/+ (< 11...Nd5 12.ed5 Re8 13.Rb1=)) 11.0–0?? (11.bc6 bc6 12.Nd4 Ne4 A) < 13.Qe4 Re8 14.Nc6 Re4 15.de4 Qg5–+; B) 13.Nc6?! Qc7 14.Qe4 Bb7 (< 14...Ba1 15.Ne7 Kg7 16.Qa8 Qe7 17.Qe4+=) 15.Ne7 Kh8=+; C) 13.Ne4 Bd4 14.c3–+) 11...Bg4–+ 12.Qg3 Be2 13.Rfe1 Bh5 14.f4 h6 15.e5 de5 16.fe5 Ng4 17.Ne4 b6 18.Nd6 Qd7 19.e6=+ fe6?? 20.Be6+– Qe6 21.Re6 Rad8 22.Rae1 Rd6 23.Rd6 Nf6 24.Rf6 Bf6 25.Re6 a5 26.a4 Rf7 27.Qf4 Bg5 28.Re8 Kg7 29.Qe5 Bf6 30.Qd6 g5 31.Qb6 Kg6 32.Qc5 Be7 +–. kamera – rayw, GameColony.com, 2002.

4.b5 Nce7

5.a4 Be6 6.Nf3 Ng6 7.Be2 a6 8.c4 Nf6 9.Nc3= ab5 10.cb5 Be7 11.0–0 Bd7 12.h3 0–0 13.d4+= ed4 14.Nd4 c5 15.Nf5 Ne4 16.Ne7 Qe7 17.Ne4 Qe4 18.Bf3 Qe7 19.Bb7 Bb5 20.Ba8 Bf1 21.Kf1 Ra8–/+ 22.a5 Qb7 23.Qd2 d5 24.g3? d4–+ 25.h4 Qh1 26.Ke2 Re8 27.Kd3 Ne5 28.Kc2 Qe4 29.Kd1 Nf3 (29...Nf3 30.Bd4 Nd2–+) 0–1. mic (2210) – zzvotra (2560), net–chess.com, 2008.

5.d4 ed4 6.Bd4 Nf6 7.Nf3 Bg4 8.Be2 Ne4 9.0–0 Qd7 10.h3 Bf3 11.Bf3 Ng5 12.Bb7 Rb8 13.Bc6 Nc6 14.Ba7 Na7 0–1. von Rosenberg,Clemens – Phillips,Dave, IECC, 2012.

5.d4 f5 6.de5 fe4 7.Nd2 d5 8.c4 c6 9.bc6 bc6 10.cd5 cd5 11.Rc1 Nf5 12.Qb3 Nge7 13.Bb5+/– Bd7?? 14.e6+– Qa5 15.Bd7 Kd8 16.Qb7 (16.Qb7 Qb6 17.Qa8 Nc8 18.Rc8 Ke7 19.Be5 Qe6 20.Re8 Kf7 21.Be6 Kg6 22.Bf5 Kg5 23.h4 Kh6 24.Bf4 g5 25.hg5 Kg7 26.Qa7 Be7 27.Qe7#) 1–0. marekt – NN, GameColony.com, 2002.

5.d4 f6 6.Bc4+= c6 7.de5 fe5 8.Be5!+/– de5?? 9.Bf7!!+– Kf7 10.Qd8 Nf6 11.Nf3 Ng6 12.Qc7 Be7 13.bc6 bc6 14.Nc3 Be6 15.Ng5 Kg8 16.Qc6 Rc8 17.Qe6 (17.Qe6 Kf8 18.Qf7#) 1–0. jaju – marekt, GameColony.com, 2002.

5.Nf3 Bd7 6.Bc4 Nf6 7.Ng5 h6?? 8.Nf7 Qc8 9.Nh8 Be6 10.Be6 Qe6 11.Nc3 Kd7 12.Qf3 g5 13.0–0 Bg7 14.Ng6! Ng6 15.Qf5 Nf4 16.Qe6+– Ne6 17.Ne2 Ne4+/– 18.d3 N4c5 19.Ng3 Bf8 20.Nf5 Na4 21.Bc1 Nc3 22.Bd2 Nb5+= 23.Rab1 a6 24.a4 Nbd4 25.Nd4 Nd4 26.c3 Nc6 27.Rb7+– Na5 28.Rb2 d5 29.Rfb1 Ba3 30.Rb8 Ra7? 31.Rh8 Be7 32.Rh6 c6 33.Rg6 Rc7 34.Bg5 Bg5 35.Rg5 Kd6 36.Rg6 Kc5 37.h4 Nb7 38.g4 Nd6 39.Kg2 Ne8 40.h5 Rh7 41.Rh1 d4 42.cd4 ed4 43.Re6 Nd6 44.g5 Nf5 45.Kf3 Kb4 46.Kf4 Ng7 47.Re7 Rh5?? 48.Rh5 Nh5 49.Kf5 Ka4 50.g6 c5 51.Rb7 a5 52.Ke6 Ka3 53.Kd5 Nf4 54.Kc5 Ng6 55.Kd4 Nf4 56.Kc3 a4 57.f3 Ne2 58.Kc4 Nc1 59.d4 Ka2 60.d5 Nb3 61.d6 Kb2?? 62.d7+– a3 (62...a3 63.Rb3 Kc1 64.d8Q a2 65.Rc3 Kb2 66.Qb6 Ka1 67.Rc1#) 1–0. TriAngel – rayii, ICC, 1999.

5.Nf3 f5 6.ef5 Nf5 7.Nc3 =.

5.Nf3 Nf6 6.Nc3 Ng6 7.d3 Be7 8.Nd5 (8.Be2!?=) 8...Nd5+= 9.ed5 0–0 10.Rb1 f5 11.c4 a6 12.a4 Bd7 13.Bc1 ab5 14.ab5 c6 15.dc6 bc6 16.bc6 Bc6 17.Bd2 Qd7 18.Be2 Rfb8 19.0–0 Bf6 20.Qc1 Rb1 21.Qb1 Qb7 22.Qb7 Bb7 23.Rb1 Bc6 24.Ng5 Bg5 (24...h6 25.Bh5 Nh4–/+ (worse is 25...hg5 26.Bg6 f4 27.h3+=)) 25.Bg5= h6 26.Bc1 Ne7 27.Ba3?? (27.f4 Kf7=) 27...Rd8 (better is 27...Ra3 28.f3 Ra2–+) 28.f3 g5 29.h3 Ng6 30.Rb6 Ne7 31.Kf2 f4 32.Ra6 Rd7 33.Rb6 Kf7 34.Bd1 Ke6 35.Bb2 Rb7 36.Rb7 Bb7 37.d4 Nf5 38.d5 Kd7 39.Ba4 Kc7 40.Bc1 Ba6 41.Bc2 Nd4–/+ 42.Bd3 Nb3 43.Ba3 Na5 44.Bb4 Nc4 45.Ba5? Na5–+ 46.Ba6 Kb6 47.Bd3 Kc5 48.Be4 Nc4 49.g3 Nb6 50.gf4 gf4 51.h4 Nd5 52.h5 Ne3 53.Ke2 d5 54.Bb1 Kd4 55.Bg6 e4 56.Kf2 Nd1 57.Ke2 Nc3 58.Kf2 e3 59.Ke1 e2 60.Kd2 Ke5 0–1. Sapareva,Magdalena (1685) – Donchev,Teodor, 1st Dimitar Nikolov Mem, 2011.

4.Bb5 Bd7

5.c3 a6 6.Bc4=+ f5 7.Bg8 Rg8–+ 8.Qh5 g6 9.Qh7 Rg7 10.Qh8 Qg5 11.g3 0–0–0 12.d3 fe4 13.de4 Rf7 14.h4?? Qg4 15.Ne2 Qe4 16.Rh2 Bg4 17.f4 ef4 18.Nd2 Qd3 19.Rd1 Re7 20.Ne4 Qe4 21.gf4 Be2 22.Rd2 Bh5 23.Rhe2 Be2 24.Qf6 Bg4 25.Kf1 Qe1 (25...Qe1 26.Kg2 Qd2 27.Kg3 Re3 28.Kg4 Qg2#; 25...Qf3 26.Kg1 Re1 27.Kh2 Rh1#) 0–1. mtrc – terva, internet, 2002.

5.Qf3 Nf6 6.Ne2 a6 7.Ba4 Nb4 8.Qb3 Nc6 9.Qb7 Na5 10.Bd7+= Nd7 11.Qd5 Rb8 12.Bc3= Nb7 13.0–0 Nf6 14.Qc6 Nd7 15.Qa6 Be7 (15...Be7 16.Qc6 Nbc5+/–; better is 15...Nbc5!? 16.Qc4 Nb6 17.Qb5 Nbd7=). Stoot – unitedfan, ChessWorld.net, 2005.

3.e4 Bd7

4.a4 Nf6 5.d3 Be7 6.g3 Nc6 7.b5=+ Nb8 8.Bg2 b6 9.d4= c6 10.de5 de5 11.Be5 0–0 12.Ne2 cb5 13.Bf6 Bf6= 14.Nbc3 Bc3=+ 15.Nc3 ba4 16.Na4 Qe7 17.0–0 (17.0–0 Ba4 18.Ra4=). bonaparte (2155) – tata (2000), net–chess.com, 2008.

4.c4 Nf6 5.d3 Nc6 6.Nf3 Bg4 7.Be2 Be7 8.0–0 Bf3 9.Bf3= 0–0 10.Nd2. coloplayah (2000) – bar (1920), net–chess.com, 2005.

4.Bc4 Nf6 5.d3 b5 6.Bb3 a5 7.a3 Nc6 8.Ne2 ab4 9.0–0 ba3 10.Ba3 Be7 11.Nd2 0–0 12.Bb2 Na5 13.Ba2 c5 14.Ng3 Qc7 15.Nf3 b4 16.h3 Rfb8 17.Bb3 Nb3–+ 18.Ra8 Ra8 19.cb3 Ra2 20.Ba1 Qa7 21.Nd2 Ne8 22.Nc4 Nc7 23.Nh5 Nb5 24.f4 Nc3 25.Bc3–/+ bc3 26.f5 c2–+ 27.Qg4? g6 28.Qg3 Kh8 29.f6? Bf8 30.Ng7 Bb5 31.Nf5 Bc4 32.bc4 gf5 33.Kh2 Ra1 (33...Ra1 34.Rf5 c1Q–+) 0–1. savage13 – golly1, ChessWorld.net, 2007.

4.d4 ed4 5.Bd4 Nc6 6.b5 Nd4 7.Qd4 b6 8.Bc4 Nf6 9.Nc3 Be7 10.Nd5 0–0 11.a4 Nd5 12.Bd5? Bf6–+ 13.Qd1. dennism (2100) – tata (2000), net–chess.com, 2008.

4.Nf3 b5 5.Nc3 Nf6 6.Bb5+= Bb5 7.d3?? a6 8.Nb5 ab5 9.a3 Nc6 10.c4 Qb8 11.c5 Nd7 12.Rc1 Be7?? 13.h3?? 0–0 14.0–0?? dc5–+ 15.bc5 Bc5 16.Re1 Qb6 17.Re2 Rfe8 18.Qd2 Re6 19.Ng5 Rg6 20.Rd1 h6 21.Nf3 Be7 22.d4 Rd8 23.Qc2 ed4 24.Nd4 Nd4 25.Bd4 c5 26.Be3 Qe6 27.Red2 Qh3 28.Kf1 Qg2 29.Ke2 Qg4 30.f3 Qg2 31.Kd3 Rd6 32.Kc3 Bf6 33.Kb3 c4 34.Ka2 Rd2 35.Rd2 Qf3 36.Ba7 Be7 37.Qb2 c3 38.Qb3 g5 39.Rf2 Qh5 40.Qc3 Qg6 41.Qe3 Ne5 42.Rc2 Qe6 43.Ka1 Nc4 44.Qc1 Ba3 45.Qg1 Qe4 46.Qf2 Rd1 47.Ka2 Qe5 48.Bd4 Qd4 49.Qd4 Rd4 50.Kb1 b4 51.Ka2 g4 (51...g4 52.Rg2 f5–+) 0–1. color1972 – Ginger Prince, ChessWorld.net, 2004.

4.Nf3= c6 5.Bc4 Be7 6.0–0 b5 7.Bb3 Bf6 8.d4 Ne7? 9.de5+– de5 10.Ne5 0–0 11.Qh5 Ng6 12.Rd1 Ne5+/– 13.Be5 Be5 14.Qe5 Kh8 15.a4+– f6 16.Qd6 Qe8 17.Nc3 ba4 18.Ra4 a6 19.Ra5 Ra7 20.h3 Qc8 21.Qc5 Re8?? 22.Qa7 Be6 23.Be6 Re6 24.Qb6 Nd7 25.Qa6 Qe8 26.Qb7 Nf8 27.Ra8 Qe7 28.Qe7 Re7 29.Rf8 1–0. tromar (1700) – Hally, GameColony.com, 2002.

4.Nf3 Bc6 5.d3 a5 6.ba5 Ra5 7.Be2 Nf6 8.0–0 Be7 9.c4 0–0 10.Bc3 Ra8 11.Nbd2 h6 12.Nb3 Na6 13.Na5 Nb8 14.Nc6 Nc6 15.d4 Ne4–/+ 16.Bb2 ed4 17.Nd4 Nd4 18.Bd4 Bf6 19.Bf6 Qf6 20.Bf3 Nc5 21.Qd2? Ra4 22.Qc2 Qf4 23.Be2 Re8 24.Rae1 Qe4 25.Qe4 Re4 26.Bf3 Re1 27.Re1 Rc4 28.g3 b6 29.Re8 Kh7–+ 30.Re7 f5 31.Rc7 Rd4 32.Rc6 b5 33.Rb6 b4 34.h3 Ne4 35.Be4 fe4 36.Kf1 Rd2 37.Rb4=+ Ra2 38.Re4 d5 39.Rd4 Ra5 40.Kg2 Kg6 41.Kf3 Kf5 42.g4 Ke5 43.Rf4?? Ra3–+ (43...Ra3 44.Ke2 Kf4–+) 0–1. Neumann,Frank (1650) – Feiertag,Manfred (1770), RSX8E2 – November, 2008.

4.Nf3 Nf6 5.Nc3 Be7 =.

4.h3 Nf6=+ 5.Nc3 Be7 6.a3 0–0 7.Bc4 c6 8.d3 Be6 9.Ba2 Ba2 10.Na2 d5 11.Be5= de4 12.d4 Qd5 13.Nc3 Qc4 14.Nge2 Nbd7 15.0–0 Ne5 16.de5 Nd5 17.Nd5= Qd5 18.Qd5 cd5 19.Nd4 Bg5 20.e6 Rae8 21.ef7 Rf7 22.c3 e3 23.f3 e2 24.Ne2? Re2–+ 25.Kh1 Rfe7 26.f4 Bf6 27.Rac1 R7e3 28.c4 Bb2 29.Rcd1 d4 30.f5 d3 31.f6 Bf6 (32.c5 d2–+) 0–1. PoPer – Whodareswins, Live Game Caissa's Web, 2004.

4.Nf3 a6

5.Bc4 Nf6 6.d3 h6 7.Nbd2 Be7 8.0–0 0–0 9.d4 ed4 10.Nd4 b5 11.Bb3 c5–/+ 12.bc5 dc5 13.Nf5 c4 14.Nc4 bc4 15.Bc4 Nc6 16.Bf6? Bf6–+ 17.Rb1 Ne5 18.Bd5 Rb8 19.Re1?? Bb5 20.c4 Bc4 21.Bc4? Nc4–+ 22.Rc1 Qd1 23.Red1 Ne5 24.Rc7? Rfd8 25.Rdc1 Ng6 26.g3 Ra8 27.Rb7 Ne5 28.Rcc7. blackburne – yesyem, ChessWorld.net, 2011.

5.Be2 Nf6 6.0–0 Be7 7.c4 Ne4 8.d3 Nf6–/+ 9.Nc3 0–0 10.Re1 Nc6 11.b5 Nd4 12.a4 c5 13.Nd4 ed4 14.Nd5 Nd5–+ 15.cd5 ab5 16.ab5 Bb5 17.Ra8 Qa8 18.Qa1 Qa6 19.Qa6 ba6 20.Ra1 Ra8 21.Ra3 Bd8 22.Bc1 Bd7 23.Bf4 Bc7 24.Bd1 h6 25.Ba4 Ba4 26.Ra4 a5 27.Kf1 g5 28.Bd2 Ra7 29.Ke2 f5 30.f4 Bd8 31.fg5 hg5 32.h3 Kg7 33.Kf3 Kg6 34.g4 Rb7 35.Ra3 Rb5 36.Be1 Rb2 37.Ba5 Ba5 38.Ra5 Rb3 39.Ke2 Kf6 40.Ra7 fg4 41.hg4 Rb2 42.Kf3 Rb8 43.Rd7–/+ Ke5 44.Rg7 Rf8 45.Kg3 Kd5 46.Rg5 Kc6 47.Rf5 Rf5= 48.gf5 Kd7 49.Kf4 Ke7 50.Kg5?? Kf7 51.Kf4 Kf6 52.Kg4? d5 53.Kf4 c4 (53...c4 54.Kf3 Kf5–+) 0–1. akadawn – SirGraves, ChessWorld.net, 2005.

3.e4 Be6

4.a3 Nf6 5.Nc3 Bg4 (5...Be7!?=) 6.Be2+= Be7?? (6...Be2 7.Qe2 Qd7 8.Nf3+=) 7.Nf3 (better is 7.Bg4 a5 8.b5+–) 7...0–0 8.d4 Nc6 9.d5 Bf3 10.Bf3 Nd4 11.Qd3 c6 12.0–0 cd5 13.ed5 Nf3 14.Qf3 Qd7 15.a4 Rac8 16.Qd3 Qg4 17.f4 Nh5 18.Ne2 ef4 19.Bd4 Bf6 20.Rae1 Rfe8 21.Ba7= Bh4 22.h3 Qd7 23.Bf2 Bf2–/+ 24.Rf2 Re3 25.Qd2 Qe7 26.Rd1 g5 27.c3 Qe4 28.Nd4 Rcc3–/+ 29.Qb2 Red3 30.Rd3 Rd3 31.Nf3 Ng3 32.Qc1? Qd5 33.Rd2 Ne2! 34.Re2 Rd1 35.Re1 Rc1 36.Rc1 h5 37.a5 g4 38.hg4 hg4 39.Nh2 f5 0–1. Moeckel,Jean L (2020) – Schuster,Petra, GER–USA (ladies), 2008.

4.Nc3 Nd7 5.Be2 f5 6.d3 Ngf6 7.a3 Be7 8.Bf3 fe4=+ 9.Ne4 Ne4 10.Be4 d5 11.Bf3 0–0 12.g3 c6 13.Bg2 Qb6 14.d4? Bb4!–+ 15.c3 Bd6 16.Qd2 Rae8 17.Ne2 ed4 18.0–0 dc3 19.Bc3 Be5 20.Ba5 Qa6 21.Rab1 b6 22.Bb4 Rf7 23.f4 Bc7 24.Nd4–/+ Qb7?? 25.f5+= c5? 26.Ne6 cb4 27.Bd5 Qb8 28.Nc7 Qc7 29.Bf7 Kf7 30.Qd5 Kf8 31.ab4 Nf6 32.Qf3 Qc4 33.Rfe1 Rd8 34.Qe3 Re8 35.Qf4 Ne4 36.Qe3?? Nf6 37.Qd2 Ne4 38.Qe2 Qd4 39.Qe3 Qd5 40.Rbd1 Qb5 41.Qd4 Nf6 42.Re8 Ne8 43.Qe4 a5 44.Re1 Qd7 45.ba5 ba5 46.Qe6 Qd8 47.Qe5 Qb6 48.Kg2 Qd8 49.Ra1 Qd2 50.Kg1 Qd3 51.Ra5 Qd1 52.Kf2 Qd2 53.Kf3 Qd3 54.Kf2?? Qd2 55.Kf1 Qd1 56.Qe1 Qd3 57.Kg2 Qc2 58.Kg1 Qc4 59.Qa1 Qe4 60.Qa3 Kg8 61.Qa2 Kf8 62.Qd2 Qb1 63.Kg2 Qe4 64.Kh3 Qb1 65.Qe2 Qc1 66.Ra8 Qh6 67.Kg4 Qc6 68.Re8 Qe8 69.Qe8 Ke8 70.Kg5 Kf7 71.h4 Kg8? (better is 71...h6 72.Kf4 Ke7+–) 1–0. Kaigre,F – Pilotelle,Barbara, FRA–chB (Women), 1990.

4.c4 Be7 5.Ne2 Nf6 6.f3 0–0 7.Ng3 Nfd7 8.d4 f6 9.d5+= Bf7 10.Bd3 a5 11.a3 ab4 12.ab4 Ra1 13.Ba1 c6 14.0–0 cd5 15.ed5 g6 16.Nd2 f5 17.Bc3 Bg5 18.f4 ef4 19.Ne2= Ne5 20.Nf3 Nf3 21.Rf3 Nd7 22.Nd4 Ne5 23.Ne6?? Nf3 24.gf3 Bf6?? 25.Bf6 Qf6–/+ 26.Nf8 Qd4 27.Kf1 Qg1?? (28.Kg1 Kf8+–; better is 27...Kf8 28.Be2 Qb2=+). zobec – COUNTDOWN2MATE3, Live Game Caissa's Web, 2004.

4.Nf3 a5 5.b5 c6 6.d4+/– ed4 7.Nd4 Nf6 8.Nc3 Be7 9.Bd3 0–0 10.0–0 Qc7 11.Re1 Nbd7+= 12.Qd2 a4 13.a3 Ne5 14.Rad1 Rfd8 15.Be2 Neg4 16.Qf4 Ne5 17.Ne6 fe6 18.Qg3 Ng6 19.Qe3 e5 20.Na4 d5 21.b6 Qd6? 22.ed5+/– Ra4?? 23.dc6+– Qc6 24.Qb3 Kh8 25.Bb5 Qb6 26.Ba4 Qb3 27.cb3 Rd1 (27...Rd1 28.Rd1 Kg8+–). kamret (2180) – apitka (2055), GameColony.com, 2003.

4.Nf3 f5 5.Nc3+/– fe4 6.Ne4 Nf6 7.Nf6 gf6 8.Bd3 Nc6 9.b5 Nd4?? 10.Nd4 ed4 11.Qh5 Bf7 12.Qf3 Qe7? 13.Qe2 Qe2 14.Be2 0–0–0 15.0–0 Bd5 16.Bg4 Kb8 17.Rfe1 Bh6 18.Bd4 Rde8 19.Re8 Re8 20.d3 Rg8 21.Bf3?? f5 22.Bd5+– c6 23.bc6 bc6 24.Rb1 Kc7 25.Ba7 cd5 26.Bb6 Kc6 27.Bd4 f4? 28.Rb6 Kd7 29.Rb7 Ke6 30.Rh7 f3 31.g3 (31.g3 Bd2 32.Rh8+–) 1–0. Nautiluschess – SquareSixtyFive, internet, 2001.

4.Nf3 f6 5.Bb5 c6 6.Ba4 b5 7.Bb3 Qd7 8.0–0 Nh6 9.Be6 Qe6 10.Re1 Nd7 11.d3 g5 12.d4 g4 13.d5 cd5 14.ed5 Qg8 15.Nh4 Be7 16.h3?? f5–/+ 17.hg4 Bh4–+ 0–1. jboger (1985) – segovia (1840), net–chess.com, 2009.

4.Nc3 a6

5.Nd5 Nf6=+ 6.b5? Ne4–+ 7.c4 ab5 8.Ne3 bc4 9.Qf3 Nf6 10.Qb7 Nbd7 11.Nd5?? Nd5 12.Bc4 Rb8 13.Qc6 Ne7 14.Qa4 Bc4 15.Qc4 Rb2 16.Ne2 Nb6 17.Qc3 Rb5 18.0–0 Rc5 19.Qb3 Nf5 20.a4 Be7 21.a5 Nc4 22.d3 Nd2 23.Qb7 Nf1 24.Kf1 0–0 25.a6 Qa8 26.Qb4 Rc6 27.a7 Rb6 28.Qa5 Nd4 29.Nc3 Nc2 30.Rc1 Nd4 31.Nd5?? Bg5 32.Nc7 Rb7 33.Na8 Ra8?? 34.Rc7?? Bd8 35.Rc8 Rc8 36.Qa6 Rbc7 37.f3 Ra8 38.Qd6–+ Rca7 39.Qe5 Nc6 40.Qe8# 1–0. Nautiluschess – Mae, internet, 2001.

5.Be2 g6 6.Nf3+= Bg7 7.0–0 Nf6 8.d4 ed4 9.Nd4 Bd7 10.Bd3 0–0 11.Nde2 Nc6 12.a3 Re8 13.f3 Na7 14.Rb1 b5 15.Nd5 c5 16.bc5 dc5 17.Nf6 Bf6 18.Nf4 Bb2=+ 19.Rb2 Qf6 20.Qc1 c4 21.Be2 Qe5 22.Nd5 f5 23.c3 Bc6 24.f4 Qd6–/+ 25.Ne3 Be4 26.Bf3? Qa3 27.Rd2?? Qc5 28.Re1?? Nc6 29.Kf1 Bd3 30.Rd3?! cd3 31.Qd2 Rad8 32.g3 Na5 33.h3 Kf7 34.Qa2 Nc4 35.Nc4 Re1 36.Ke1 Qg1 37.Kd2 Qf2 (37...Qf2 38.Kc1 Qa2 39.Ne5 Kf6 40.Ng4 fg4 41.Kd1 Qc2 42.Ke1 d2 43.Ke2 d1Q 44.Ke3 Qf3#) 0–1. mic (2105) – jcosta (2360), net–chess.com, 2007.

4.c4 Nf6=+

5.Nc3 Nc6 6.a3 =+.

5.Nc3 Be7 6.d4 ed4–/+ 7.Qd4 0–0 8.Nf3 Nbd7 9.Be2 c5 10.bc5 dc5 11.Qd2 Qc7 12.0–0 Ne5?? 13.Nb5?? Nf3= 14.Bf3 Qb6 15.a4 a6 16.Na3 Qb3 17.Bc3 Bc4? 18.Rfb1+– Qa4 19.Nc4?? Qc4–/+ 20.Be2 Qe4 21.Bf3–/+ Qg6 22.Rb7 Rab8?? 23.Re7+– Rfd8 24.Qc1 Nd5 25.Be4 Qd6 26.Bg7?? Qe7–+ 27.Bd5 Rd5 28.Bh6 Rbd8 29.Qf1 Qf6 30.Be3 Qa1! 31.Qa1 Rd1 0–1. kamera – sead (1985), GameColony.com, 2002.

5.d3 Nbd7 6.Nf3 Be7 7.Be2 c6 8.Nc3 0–0 9.0–0 d5 10.Ng5 dc4 11.Ne6=+ fe6 12.dc4 Bb4 13.a3 Ba5 14.Qa4 Bb6 15.Rfd1 Qc7 16.Qb3 Nc5 17.Qc2 a5 18.a4 Nfe4 19.Ne4+= Ne4 20.Qe4 Bf2 21.Kh1 Bb6? 22.Be5+– Qf7 23.Bf3 Rac8 24.Bd6 Rfd8?! 25.c5 Bc7 26.Bc7 Qc7 27.Rd6 Rd6+/– 28.cd6 Qd6 29.Rd1 Qa3?? 30.Qe6 Kf8 31.Qc8 Kf7 32.Qb7 Kg6 33.Qc6 Kg5 34.Rd5 Kf4 35.Qc4 Ke3 36.Rd3 Qd3+– 37.Qd3 Kd3 38.Bc6 g5 39.Kg1 h5 40.Kf2 h4 41.g3 Kd4 42.gh4 gh4 43.Kf3 Ke5 44.Kg4 Kd4 45.Kh4 Ke3 46.Kg5 Kf2 47.h4 1–0. kamera – antrobus, GameColony.com, 2002.

4.Nf3 Nc6

5.b5+= Nce7 6.Ng5 Qd7 7.d4 f6 8.Ne6 Qe6 9.d5 Qd7 10.Nd2 c6 11.bc6 bc6 12.Bc4 cd5 13.ed5 Nf5 14.0–0 Ngh6 15.a4 a6 16.Ne4 Be7 17.Qh5 g6 18.Qe2 Qb7 19.Rab1 Qc8 20.Bc1 0–0 21.Bh6 Nh6+/– 22.Rb6 Nf5 23.Ba6 Qd8 24.Rfb1 Nd4 25.Qd3 Qc7 26.c3 Nf5 27.g4 Nh6 28.Rb7 Qa5? 29.Re7 Qa6 30.Qh3 Rf7 31.Nf6!! Kg7 32.Ne8 Kf8? 33.Nc7 Qa4 34.Rf7 Kf7 35.Na8 Ng4 36.Qh7 Kf6 37.Nc7 Kg5 38.Ne6 Kf5 39.Qh4 Qa7 40.Qg5 (40…Ke4 41.Qg4 Kd3 42.Qf3 Qe3 43.Qe3 Kc2 44.Qc1 Kd3 45.Qd1 Kc4 46.Qd2 g5 47.Rb4#) 1–0. Caissa – orandd, internet, 2003.

5.Bb5 Qf6 6.Bc6 bc6 7.d4 Qf4 8.Qd3 f6 9.Nbd2+= ed4 10.Bd4 Qh6 11.Qa6+/– Ne7 12.b5 cb5 13.Qb5+/– Bd7 14.Qb7 Rc8 15.Qa7 Nc6 16.Qb7 d5 17.a3?? Nd4 18.Nd4+/– Bc5 19.Qd5+– Bd4 20.Qd4 0–0?? 21.Qd7 Rcd8 22.Qe6 Kh8 23.Rd1 Rde8 24.Qd7 c5 25.0–0 g5 26.Nb3 Re4 27.Nc5 Rc4 28.Ne6 Rg8 29.a4 (29.a4 Qg6 30.Nd8+–) 1–0. bvboucher (2020) – dccraig (1705), net–chess.com, 2005.

5.Bb5 h6 6.0–0 Nge7 7.d4+/– ed4 8.Nd4 a6 9.Bc6 Nc6+= 10.Nc6 bc6 11.Re1 Qg5 12.Qf3 Be7 13.e5 Bd5 14.Qg3 Qg3=+ 15.hg3 0–0 16.ed6 Bd6 17.Nc3? Be6 18.a3= c5 19.Ne4 cb4 20.Nd6 cd6 21.ab4 Rfb8 22.c3 Rb5 23.Re4 Re5 24.Rh4 Re2–+ 25.Ba3 d5 26.Kf1–+ Rc2 27.g4 Rc3 28.Bb2 Rc4 29.f3 Rb4 30.Bc3 Rc4 31.Bd2 d4 32.Ke2 Rc6 33.Rah1? Rc2 34.Kd3 Rc4 35.Re1? a5?? 36.Re6!+/– fe6 37.Kc4 e5 38.Rh5 a4 39.Re5 a3 40.Re1 a2 41.Ra1 Ra3 42.Kd4 Kf7 43.Bc3 g6 44.Kc5?? Rc3–/+ 45.Kd4 Rc2 46.g3 Kf6 47.Kd3 Rg2 48.Ke3 h5 49.Kf4 g5–+ 50.Ke4 hg4 51.fg4 Rg3 52.Ra2–/+ Rg4 53.Kf3 Rb4 54.Ra6 Kg7 55.Re6 Rf4 56.Kg3 Rf6 57.Re5 Kg6–/+ 58.Rd5 Rf4 59.Rd6 Kh5 60.Rd8 Rc4 61.Rh8 Kg6 62.Rg8 Kh6 63.Rh8 Kg7 64.Rd8 g4 65.Rd7 Kf6 66.Rd6 Ke5 67.Rg6? Kf5–/+ 68.Rg8 Rc3 69.Kg2 Kf4 ˝–˝. cindya – ramesis, net–chess.com, 2006.

4.Nf3 Nd7

5.Nc3 Ngf6 6.Ng5 Be7 7.Ne6+= fe6 8.Bc4 d5 9.ed5+/– 0–0 10.de6+– Nb6 11.Qe2 Kh8 12.Bd3 Bb4 13.Qe5 Qe7 14.0–0 Rad8 15.Rae1 Bc3 16.Qc3 Rd5 17.Qa3 Rd6 18.Bd4! Nfd5 19.Bc5 Nf4 20.Bd6 cd6 21.Qa7 Nbd5 22.Be4 Nf6 23.Bc6 N6h5 24.Qb7 Qg5 25.e7 Rg8 26.e8Q h6 27.Qg8! Kg8 28.Re8 Kh7 29.Be4 Ng6 30.Qb8 1–0. market (1920) – albo (1835), GameColony.com, 2002.

5.d4 ed4 6.Nd4+= Qe7 7.Ne6 fe6 8.Bd3 Ngf6 9.0–0 0–0–0 10.c4 g5 11.Qa4 Kb8 12.Re1 Ne5= 13.Bd4 a6?? 14.b5?? Nd3–+ 15.ba6? ba6 16.Nc3 Ne1?? 17.Qa6 Nc2 18.Rb1 Nb4 19.Rb4 1–0. caesar (2040) – nbarletta (2015), net–chess.com, 2003.

4.Nf3 Be7

5.c4 Nd7 6.a3 f5 7.ef5 Bf5 8.d4 e4 9.d5?? Ngf6?? 10.Nh4 Bg4+= 11.f3 ef3 12.Nf3= 0–0 13.Be2 (13...Bf3 14.Bf3=) =. kamera – ally44, GameColony.com, 2002.

5.c4 f5 6.Nc3= Nf6 7.Ng5 Bd7 8.ef5 Bf5 9.Qf3 Qc8 10.b5 0–0 11.Nd5+/– Nd5 12.Qd5 Kh8 13.Nf7 Rf7 14.Qf7 Qd7? 15.Be2+– Bg6 16.Qf3 c6 17.0–0 a6 18.a4 Qe6 19.Rfe1 Nd7 20.bc6 Rf8 21.Qd5 Qd5 22.cd5 bc6 23.dc6 Nc5 24.Rac1 Rc8 25.d4 ed4 26.Bg4 Re8 27.c7 Nd3 28.Re7! Nc1 29.Re8 Be8 30.c8Q (30.c8Q Ne2 31.Be2 h6 32.Qe8 Kh7 33.Bd3 g6 34.Bd4 d5 35.Qg6#) 1–0. funky – via Dolorosa, internet, 2011.

5.c4 Nf6 6.Nc3 =.

5.d4 Nf6 =.

5.Be2 Nf6 6.Nc3 0–0 7.0–0 a5 8.a3 ab4 9.ab4 Nc6 10.b5 Na5 11.Ng5 Qd7 12.Ra4 h6 13.Nf3 (13.Ne6 fe6 14.d4 ed4 15.Qd4 c5+/–) 13...b6 (13...c5!?=) 14.d4+= ed4 15.Nd4 Nb7 16.Ne6 fe6 17.f3 Nc5 18.Ra1 Rfb8 19.Bc4 Kh7 20.Qe2 e5 21.Rfd1 Qc8 22.Qf2 Ra1 23.Ra1 Ra8 24.Qf1 Nb7 25.Nd5 (25.Ra8 Qa8 26.f4 ef4+/–) 25...Nd5 26.Bd5 Ra1 27.Qa1 Na5 28.Qa4 Qb8 29.Bc3 Nb7 30.Ba2 Bg5 31.Qc4 Be3 32.Kf1 Nc5 33.Ke2 Bf4 34.g3 Bg5 35.Bd2 Bd2 36.Kd2 Qe8 ˝–˝. Nyikos,Laszlo – Kwiek,Janusz (1815), 17OBSen–Rowy Poland, 2008.

4.Nf3 Nf6

5.Nc3 a6 6.Be2 Nbd7 7.0–0 c6 8.d4 ed4 9.Nd4 Qc7 10.Ne6 fe6 11.Bf3 0–0–0 12.Re1 g6 (12...d5!?=) 13.a4 e5 (13...d5 14.b5+=) 14.b5 cb5 (better is 14...Nc5!?+/–) 15.ab5+– a5 16.Nd5 Nd5 17.ed5 (17.Qd5!? Re8+–) 17...Bg7+/– 18.Rc1 (18.c4 Rdf8+/–) 18...Nc5 19.c4 b6 20.Bg4 Kb7 21.Be6 Rde8 22.Qf3 (22.Ba3!?+/–) 22...Rhf8= 23.Qh3 h5 24.Qg3 Ne4?? (better is 24...Ne6 25.de6 Re6=) 25.Re4+– Rf6 26.h3 Bh6 27.Rc2 Qh7 28.Bd7 (28.Bd7 Qd7 29.Bc3+/–) 1–0. Neumann,Frank (1650) – Daniel,Achim (1890), RS–Pyramide remoteschach.de, 2008.

5.Nc3 Nbd7 6.d4 ed4 7.Nd4 Be7 8.Nd5 Bd5 9.ed5 0–0 10.c4 Ne5 11.f4 Ng6 12.g3 Re8 13.Bg2 (13…a5 14.ba5 Bf8 15.Kf2 Ra5 16.Bc3=). Pelz,Wolfgang – Conrad,Christian, remoteschach.de, 2003.

5.Nc3 Be7 6.Be2 0–0 7.a3 Nc6 8.0–0 Nd4 9.d3 Ne2 10.Qe2= Qd7 11.h3 Nh5 12.Nd5 Bd5=+ 13.ed5 Nf4 14.Qe4 f5 15.Qc4 e4 16.de4= fe4 17.Qe4+/– Rae8 18.c4 Bf6 19.Qc2 Bb2–/+ 20.Qb2 Nh3 21.gh3 Rf3 22.Rae1 Qh3?? 23.Re8+– Kf7 24.Rfe1 Qg4= 25.Kf1 Qc4?? 26.R1e2 Qh4 27.R2e7! Kg6 28.Qg7 Kf5 29.Rf8 (29.Rf8 Qf6 30.Rf6) 1–0. alaamattar (2100) – nbarletta (2100), net–chess.com, 2005.

5.d3 c5 6.c3 Nc6 7.b5 Qb6 8.c4 a6 9.Qa4 Qa5 10.Qa5 Na5 11.Bc3 ab5 12.Nbd2 bc4 13.dc4 Be7 14.Bd3 0–0 15.Ng5 Nc6 16.Ne6 (16.Ne6 fe6 17.0–0–/+). unitedfan – Stoot, ChessWorld.net, 2005.

5.d3 Nc6 6.b5 Ne7 7.c4 Ng6 8.Nc3 (withdraw, 1–0). Roczniak – Bazylewicz, corr Poland 1972–73.

5.d3 Nc6 6.b5 Ne7 7.Be2 c6 8.a4 Qb6 9.Nc3 cb5 10.ab5 Nc8 11.0–0 d5 12.ed5 Nd5 13.Ne5 f6 14.Nc4 Qc7 15.Nd5 Bd5 16.Re1 Bc4?? 17.Bh5 Kd8 18.dc4 Qd7 19.Re8 Kc7 20.Qf3 Nd6 21.Ra8 Nc4 22.R8a7 Qb5 23.Qc3 Bc5 24.Be2 Bf2 25.Kf2 Qc5 26.Ke1 Re8 27.Qc4 Qc4–+ (28.Kf1 Qe2 29.Kg1 Qe3 30.Kf1 Re4–+) 0–1. chevin – Heynow, Live Game Caissa's Web, 2004.

5.d3 Nbd7 6.Nbd2 =.

5.d3 Nbd7 6.Be2 d5=+ 7.ed5 Bd5 8.0–0 Bb4–/+ 9.Nbd2 0–0 10.a3 Ba5 11.c4 Bf3 12.Nf3 e4 13.de4=+ Ne4 14.Bd3 Nc3 15.Bc3 Bc3+= 16.Rb1 Nc5–/+ 17.Qc2? h6?? 18.Qc3+= Nd3 19.Rfd1+– Qf6? 20.Rd3 Qc3 21.Rc3 Rad8 22.h3 b6 23.c5 f6 24.cb6 ab6? 25.Rc7 Rd3 26.Rb6 Rfd8 27.Rbb7 Rd1 28.Kh2 R1d7 29.Rd7 Rd7 30.Rd7 Kf8 1–0. wood – ERIC1, Live Game Caissa's Web, 2005.

5.d3 Nbd7 6.Be2 g6 7.0–0 Bg7 8.c4 0–0 9.Nbd2 c6 10.d4 ed4 11.Nd4 c5 12.Ne6 fe6 13.bc5 Nc5 14.f3 a6 15.Bf6 Bf6 16.Rb1 Qd7 17.Nb3 Qc6 18.Nc5 Qc5 19.Kh1 Rfd8 20.Rb7 Rab8 21.Qb3 Rb7 22.Qb7 Qe3 23.Re1 Bc3 24.Qc7 Rf8–+ 25.Qd6 Be1 26.Qe6 Rf7 (27.Qe8 Kg7 28.Qe5 Kh6–+) 0–1. abt – draskod, Live Game Caissa's Web, 2004.

5.d3 Be7 6.Nbd2 0–0 7.d4 ed4 8.Nd4 Bd7 9.Bd3 c5 10.bc5 dc5 11.N4f3 Bc6 12.0–0 Nbd7 13.Re1 Re8 14.c4 (14…Nh5 15.e5=; 14.Nc4 Ng4 15.Nfd2 Nh6+=). edfdo – goofy, Live Game Caissa's Web, 2004.

5.d3 Be7 6.Be2 0–0 7.c4 Nbd7 8.Ng5 a5 9.a3 c6 (9...c5 10.bc5 Nc5 11.0–0 Qb6 12.Bc1 Qb3=; 9...ab4 10.ab4 Ra1 11.Ba1 c5 12.Bc3 cb4=) 10.d4 ed4 11.Bd4 ab4 12.ab4 d5 13.c5? Ra1–/+ 14.Ba1 Ne4 15.Ne6 fe6 16.0–0 b6 17.Qc2? bc5–+ 18.bc5 Bc5 (18...Bc5 19.Bf3 Nd6–+) 0–1. Grassano,Carlos Alberto – Enricci,Juan Andres, corr ARG–ch8 sf, 1977.

5.d3 Be7 6.Ng5 0–0 7.Be2 a6 8.Ne6 fe6 9.a3 Nc6 10.c3 Nd7 11.Qb3 Rf6 12.Bg4 Nf8 13.Nd2 Qe8 14.Nf3 Qg6 15.Bh3 Nd7 16.Nh4 Qf7 17.0–0 Rf8 18.Nf3 Qg6 19.Kh1 Nd8= 20.Bc1 Qh5 21.Ng5 Qg6 22.Be3 h6 23.Nf3+= Qh5 24.d4?? Kh8?? 25.Rad1 Rf3–/+ 26.gf3?? Qh3–+ 27.de5 Qf3 28.Kg1 Ne5 29.Bd4 Rf6 30.Be5 de5 31.Rfe1 Qf2 32.Kh1 Qf3 (32...Qf3 33.Kg1 Rg6#) 0–1. mic (2160) – gmiller (2195), net–chess.com, 2007.

5.d3 Bg4 6.Be2 Nbd7 7.0–0 h5 8.Nbd2+= h4 9.h3+/– Be6 10.Nh2 Qe7 11.f4 ef4= 12.Rf4 0–0–0 13.Nc4 g5 14.Rf1=+ Rg8 15.Bg4 Bg4 16.Ng4+= Ng4 17.Qg4 Kb8 18.a4 Nf6?? 19.Qf3 Bg7?? 20.Bf6+– Bf6 21.Qf6 Qf6 22.Rf6 g4 23.hg4 Rg4 24.Rf7 h3 25.Rf2 Rh8 26.Raf1 h2 27.Kh1 Rg2 28.Rg2 a6+– 29.Rh2 Rh2 30.Kh2 c6 31.Nd6 Kc7 32.e5 Kd7 33.Rf7 Ke6 34.Rb7 Ke5 35.Nc4 Kd4 36.Rb6 Kc3 37.Ra6 Kb4 38.Rc6 Ka4 39.d4 Kb4 40.d5 Kb5 41.Ne5 Kb4 42.d6 Kb5 43.d7 Ka4 44.d8Q Kb5 45.Qb8 Ka5 46.Rc7 (46.Rc7 Ka6 47.Ra7#) 1–0. sculp – pawn8, Live Game Caissa's Web, 2006.

5.d3 h6 6.Nbd2 Nbd7 7.d4 ed4 8.Nd4+= Bg4 9.Be2 Be2 10.Qe2 g6 11.f4 Bg7 12.0–0 0–0= 13.Rae1 Re8 14.N4b3 c6 15.Qd3 Qb6=+ 16.Kh1 Qc7 17.Ba1 Red8 18.c4 b6 19.Nd4 a6 20.N4f3 Nf8 21.Qc2 Rd7 22.g3 Re7 23.Bc3 Qd7 24.Kg2 c5 25.bc5 dc5 26.Bf6 Bf6 27.e5 Bg7 28.Ne4 Qc7 29.Rd1 Rd7 30.Rd7 Nd7 31.Rd1 Bf8?? 32.Rd7!+– Be7 33.Qd3 (33.Qd3 Rd8 34.Rc7 Rd3 35.Re7+–; better is 33.Rc7 Re8 34.Qa4+–) 1–0. Stadler,Tereza – Fouriki,Artemis, Balkaniad (Women), 1979.

5.d3 h6 6.Nbd2 Be7 7.d4 0–0 8.de5+= de5 9.a3 a5 10.ba5 Nc6 11.Ne5 Ne5= 12.Be5 Ra5 13.Bb2 Qa8 14.Qc1 Ng4 15.Bd3 f5 16.0–0 Bc5 17.ef5+/– Bf5 18.Bc4 Kh8 19.Nf3 Qa7 20.h3 Nf2?? 21.Rf2 Bf2–+ 22.Kh1 Bh3?? 23.Qh6# 1–0. Carter,D – Vergara,M, San Antonio Texas U, 1991.

5.Ng5 Be7 =.

4.Nf3 h6

5.d4 ed4 6.Nd4 Nc6? 7.Nc6 bc6+= 8.Bd3 d5 9.ed5 Bd5 10.0–0 Qg5 11.Qe2 Ne7? 12.f4+– Qh4 13.c4 0–0–0 14.cd5 Rd5 15.Ba6 Kb8 16.Nc3 Rh5 17.g3 Qh3 18.b5 g5 19.bc6 Rg8 (19...Qh2 20.Qh2 Rh2 21.Kh2 Bg7+–) 1–0. cowface – qazaq14, Live Game Caissa's Web, 2004.

5.d4 ed4 6.Nd4 Bc8 7.Nc3 +=.

5.d4 ed4 6.Nd4+= Bd7 7.Bd3 +=.

5.d4 ed4 6.Nd4+= Nf6 7.Nd2 Bd7 8.Bc4 Nc6 9.Nc6 Bc6 10.0–0 Be7 11.b5 Bd7 12.Re1 0–0 13.Nf3 Bg4 14.h3 Bh5 15.e5 Nd7 16.e6 Nb6 17.Bb3 fe6 18.Re6 d5= 19.Qd3 Bf7 20.Nd4 Bf6 21.Qg3 Nc4?? 22.Bc4 dc4 23.Rf6?? Qf6–/+ 24.Rb1 Bg6 25.Qc7 Qf2–+ 26.Kh1 Rac8 27.Qb7 c3 28.Ne6 Qf7 29.Qf7 Rf7 30.Ba3 Bc2 31.Rc1 Bd3 32.Kg1 c2 33.Bc5 Rf1! 34.Rf1 Bf1 35.Kf1 Rc5! (35...Rc5 36.Nc5 c1Q 37.Ke2 Qc5–+) 0–1. Svendsen,Tony – Nimki,Ivbjorn, Kalotturneringen, 1991.

5.d4 d5 6.a3 de4 7.Ne5 =.

5.d4 d5 6.ed5 Qd5 7.a3 ed4 8.Bd4 =.

5.Be2 Be7 6.0–0 Nf6 7.Nc3 Nc6 8.d3 Qd7 9.Bc1 0–0–0 10.Nd5 Nd5–/+ 11.ed5 Bd5 12.b5 Nb8 13.d4 f6 14.de5 fe5?? 15.c4 Be6 16.Be3 b6 17.Qc1 d5? 18.cd5 Bd5 19.Ne5 Qe6?? 20.Nc6 Nc6–/+ 21.bc6 Bc6 22.Ba6 Kb8–+ 23.Bc4 Qe4 24.Ba6?? Qg2# 0–1. guest425 – guest1347, ICS blitz, 2000.

5.Be2 Nf6 6.Nc3 Be7 7.0–0 0–0 8.d4 ed4 9.Nd4+= c5 10.bc5 dc5 11.Ne6 fe6 12.Qc1 Qc7 13.Qe3 a6 14.Rad1 Nc6 15.Rd2 Rad8 16.Rfd1 Nd4 17.Na4 Qc6 18.Nc3 b5 19.f3 Ne2 20.Ne2= Rd2 21.Rd2 Rd8 22.Rd8 Bd8 23.Qd3 Qd7 24.Nf4 Qd3 25.cd3 Kf7=+ 26.e5 Nd7 27.a3 Bc7 28.d4 cd4 29.Bd4 Be5 30.Be5 Ne5 (30...Ne5 31.Kf2 g5–+) 0–1. wach – DCS1946, Caissa.com, 2004.

3.e4 Be7

4.a3 Bd7 5.Bc4 Nf6 6.d3 Nc6 7.c3 Bg4 8.f3 Be6 9.Be6 fe6 10.g3 0–0=+ 11.Nd2 a6 12.Qb3 b5 13.Qe6+/– Kh8 14.h4 Re8 15.h5 Bf8 16.Qf5 Ne7 17.Qg5 Nfg8 18.Ne2 Nh6 19.f4 Nc6 20.Qd8+– Rad8 21.fe5 (21.fe5 Ne5 22.Nf4+=; better is 21.c4!? bc4 22.dc4+–) 1–0. grahamtrue (2070) – tata (2000), net–chess.com, 2008.

4.b5 Nf6=+ 5.Nc3 Bg4 6.Be2= Qd7 7.h3 Be6 8.a4 c5 9.Nf3 a6 10.0–0 0–0 11.Ng5 h6 12.Ne6+= Qe6 13.Bd3 Nbd7 14.Qe2 Nh7 15.Bc4 Qg6+/– 16.Nd5 Bh4 17.f4 ef4 18.Rf4 Rae8?? 19.Rh4 f5 20.Nf4 (20.Nf4 Qf7 21.Bf7 Rf7 22.ba6 Re4 23.a7+–; 20.Ne7 Kh8 21.Ng6#) 1–0. mic (2195) – capacuba (2205), net–chess.com, 2008.

4.d3 Nf6 (--> 3.e4 Nf6 4.d3 Be7).

4.d4 f6 5.d5 Nh6 6.Qh5 Nf7 7.c4 0–0 8.a4 Ng5 9.Nd2 g6 10.Qh6 Nf7 11.Qe3= Nh8 12.f4 Bg4 13.h3 Bd7 14.Be2 Re8 15.g4 Bf8 16.f5 Bg7 17.h4 gf5 18.gf5+/– Re7 19.Qg3 Be8 20.h5 Kf8?? 21.h6+– Bh6 22.Rh6 Rg7 23.Qh2 Qe7 24.Ndf3 Bf7 25.Rh7 Bg6 26.Rh8 Kf7 27.fg6 Rg6 28.Rh7 Rg7+– 29.Rg7 Kg7 30.Nh4 Nd7 31.Nf5 Kf7 32.Qh7 Ke8 33.Qe7# 1–0. hasant (1915) – bar (1905), net–chess.com, 2008.

4.d4 Bf6 5.de5+= Be5 6.Be5 de5 7.Qd8 Kd8 8.Nf3 f6 9.Nbd2 Ne7 10.Rd1 Ke8 11.Bc4 Nbc6 12.c3 Bd7 13.h3 f5 14.ef5+/– Bf5 15.b5 Na5 16.Ne5 Nc4 17.Ndc4 Bc2 18.Rd7 c6?? 19.Nd6 Kf8 20.Nef7 Rg8 21.Ng5 Rh8 22.Ne6 Kg8 23.Re7 Ba4 24.Rg7 1–0. market (2260) – dreadlockrasta, GameColony.com, 2002.

4.Nf3 Be6 5.d4 f6 6.d5 Bf7 7.Bd3 Nd7 8.Bb5 Bg6 9.Nbd2 f5 10.Qe2 fe4 11.Ne4 Ngf6 12.Nf6 Bf6 13.Bd3 Bd3 14.Qd3 0–0 15.Nd2 e4 16.Qb3 e3 17.Nf3 ef2 18.Kf1 Bb2 19.Qb2 Rf3 20.gf3=+ Qh4 21.c3 Rf8 22.Qf2 Qc4 23.Kg2 Rf6 24.Rhe1 Ne5 25.Qd4 Rg6 26.Kh1 Qb5 27.Re5 de5 28.Qe5 Qd7 29.Re1 Kf8 30.c4 Ra6 31.Re2 Qf7 32.Qe4 Rf6 33.Qh7+– Rh6 ˝–˝. Flewelling,Heather – Epstein,David, Houston op, 1999.

4.f4 Bf6 5.f5 b6 6.Nf3= Ba6 7.b5 Bb7= 8.c4 Be4–/+ 9.Be2 Nd7 10.0–0 Ne7 11.Nc3 Bf5–+ 12.d4 0–0 13.Nd5 Nd5 14.cd5 Bg6 15.Rc1 e4 16.Nd2 Bg5 17.Rc3 f5 18.Bh5?? Nf6 19.Bg6 hg6 20.Rg3 Nh5 21.Rc3 Qd7 22.Rc6 Rae8 23.Re1 Nf4 24.Qb3?! Nd3 25.Re2 Bd2 26.Rd2 f4 27.Re2 Qg4 28.Rcc2 f3 29.Re3 f2 30.Rf2 Rf2 31.Rg3 Qe2 32.Bc3 Qf1# 0–1. Towns,Barry (1765) – Remillard,John, Winnipeg Abe Yanofsky mem, 2006.

4.g3 Nf6 5.Bg2 a5 6.b5 c6 7.c4 cb5 8.cb5 Nbd7 9.a4 b6 10.Ne2 Nc5 11.0–0 0–0 12.d4 ed4 13.Bd4 Nfd7 14.Nec3 Rb8 15.Qg4 Bf6 16.Bf6 Nf6 17.Qf4 Qe7 18.Re1? Qe5?? 19.Qe5 de5 20.Nd2 Be6 21.f3 Rbd8 22.Rad1 Rd3 23.Ncb1 Rfd8–+ 24.Kf2 Nb3 25.Ke2 Nd2 26.Rd2 Bc4 27.Rd3 Bd3 28.Ke3 Bb1 29.Rb1= Rd4 30.Ra1 Rb4 31.Bf1 Rb2 32.h4 Rb3= 33.Kf2 Rb4 34.Be2 Nd7 35.g4 Nc5 36.Kg3 Na4 37.h5 Nc3 38.Bf1 a4 39.g5 f6 40.Rc1 a3?? 41.g6 hg6 42.Rc3 gh5 43.Rc8?? Kf7 44.Ra8+/– Ke6 45.Bh3 f5 46.Ra3 Kd6 47.Bf5+– Kc5 48.Rc3 (48…Kd4 49.Rc7 Rb5 50.Rg7+–) 1–0. slavisa10 – oo1o1, Live Game Caissa's Web, 2004.

4.Bc4 Nf6=+

5.Nc3 0–0 6.Nf3 (--> 4.Nc3 Be7 5.Nf3 0–0 6.Bc4).

5.Nc3 Nc6 6.a3 0–0 =+.

5.Nf3 Ne4–/+ 6.d4 Nc6 7.de5 Ne5 8.Ne5 de5–/+ 9.0–0 Qd1 10.Rd1 0–0 11.Be5 Bf6 12.Bf6= Nf6 13.Nc3 c6 14.h3 Bf5= 15.Bb3 Rfe8 16.Re1 Red8 17.Re7+/– Rab8 18.Rc7 Ne4? 19.Ne4+/– Be4 20.Rf7 Kh8 21.Re1+– Bg6 22.Rc7 Rf8 23.Ree7 Rf6 24.Rg7 Rbf8 25.Rgd7 Rf2 26.Kh2 Re2 27.Rb7 Rff2 28.Rd8 Re8? 29.Re8 Be8 30.Ra7 Re2 31.Ra8 Kg7 32.Ra7 Kh6?? 33.a4 Bg6 34.Rc7 Be4 35.a5?? Bg2?? 36.Kg1 Bh3 37.a6 Re1 38.Kh2 Bf1 39.Rc6 Kh5 40.a7 Ra1 41.Rc7 Ba6 42.a8Q h6 43.b5! (43…Bb7 44.Qa1+–) 1–0. bby – wct32, Live Game Caissa's Web, 2004.

4.d4 ed4

5.Bd4 Bf6 6.c3 Bd4 7.cd4 Nf6 8.Nc3 Bg4 9.Be2+= Be2 10.Nge2 Nc6 11.d5 Nb4?? 12.Qa4+– Qd7 13.Qb4 b6 14.f4 Qe7 15.0–0 a5 16.Qb5 Nd7 17.Qc6 0–0 18.Qc7?? Rab8?? 19.Rae1 Rbc8?? 20.Qa7 Ra8 21.Qb7 Rab8 22.Qa6 Ra8 23.Qb7 Rab8 24.Qa6 Nc5?? 25.Qc4+– Rbc8 26.Nd4 Ne4 27.Nc6 (27.Nc6 Qd7 28.Qe4+–; 27.Re4?! Qe4 (27...Rc4?? 28.Re7 Rd4 29.Rb1+–) 28.Ne4 Rc4+/–) 1–0. marekt – lelamson75, GameColony.com, 2002.

5.Bd4 Bf6 6.Nf3 Be6 7.c3 Nd7 8.Bd3 Ne7 9.0–0 a5 10.b5 c6 11.Re1 c5 12.Bf6+= Nf6 13.Nbd2 Qc7 14.Nc4 0–0 15.Nd6+/– c4 16.Bc2 Bg4 17.e5+– Nfd5? 18.Bh7! Kh8 19.Be4 Nc3 20.Qc2 Ne4 21.Re4 Bf5 22.Rh4 Kg8 23.Nf5 Nf5 24.Qf5 f6 25.Qe6 Qf7 26.Qh3 Qg6 27.Rh8 Kf7 28.Qd7# . 1–0. b4_player (2160) – maluco (1765), GameColony.com, 2003.

5.Bd4 Nf6 6.Nd2 Nc6 7.Bc3 0–0 8.Bc4 Ne5 9.Bb3=+ Bg4 10.f3 Bh5 11.Ne2 Qd7 12.Ng3 Bg6 13.h4 Rad8?? 14.h5+– Bh5 15.Nh5 Nh5 16.Rh5 Ng6 17.Nf1 Nf4 18.Rh2 Qb5 19.Ne3 Bg5? 20.g3 Ne6 21.f4 Be7 22.Bc4 Qb6 23.Nf1 Qg1?? 24.Be6 fe6 25.Bd4 Qf1 26.Kf1 e5 27.Be3 ef4 28.gf4 Bg5 1–0. FABOLOUS – chessH, ChessWorld.net, 2003.

3.e4 f5

4.Nc3 fe4 5.Ne4 Nf6 6.Nf6 Qf6 7.Nf3 Bg4 8.Be2 Nd7 9.0–0 0–0–0 10.c4 h5 11.d4 e4 12.Nd2 Qg6 13.Re1 d5 14.a3 Nf6 15.cd5 Rd5 16.Qb3+= Rd7 17.Nc4 Bd6 18.Nd6 Rd6= 19.Bg4 Qg4 20.Rac1 Qd7 21.b5 Kb8 22.Rc5 h4 23.h3+= Qe6 24.Qc2 Qd7 25.Rc1 Rc8 26.a4 Rd5 27.Qd2 g5 28.Qe3 g4 29.Qh6 gh3=+ 30.Qf6 Qg4 31.g3 Rc5 32.dc5 hg3 33.Be5 gf2 34.Kf2 h2 35.Bh2 e3–/+ 36.Ke1 Qb4 37.Kf1 Qd2 38.Bc7 Rc7 39.Re1 Qd3 40.Kg1 Qe4 41.Qg5 Rc5 42.Qc5 Qg4 43.Kh2 Qh4 ˝–˝. Benussi,Alberto – Welti,Manfred, email 4AMM–04, 1997.

4.Nc3 f4 5.Bc4 c6 6.Bg8+= Rg8 7.Qh5 g6 8.Qh7 Rg7 9.Qh8 Qg5 10.g3 fg3 11.hg3+/– Na6 12.a3 Bg4 13.f4! ef4? 14.Nd5+– fg3 15.Bg7 cd5 16.Qf8 Kd7 17.Qa8 Nc7 18.Rh7 Kc6 19.b5! Nb5 20.Bf6! Qf4 21.Qb7 Kc5 22.Bd4! Kd4 23.Qd5# 1–0. Wall,Bill – JDL, internet, 2003.

4.Bc4 fe4 5.Bg8 Qg5 6.Bh7 Rh7 7.g3 –/+.

4.Bd3 fe4 5.Be4 Nf6 6.Nc3 Be7 7.Nf3 0–0 8.Ng5 Ne4–/+ 9.Nge4 d5 10.Ng3 Bb4–+ 11.a3 Be7 12.0–0 c6 13.Re1 Bd6 14.Qh5 Qf6 15.Qe2 Nd7 16.Nh5 Qg6 17.Na2? b6 18.Nb4 Bb7 19.Nd3 Rae8 20.Qd1 e4 21.Nb4 a5 22.Na2 Bc5 23.Rf1 Ba6 24.Ng7 Re7 25.d4 ed3 26.cd3 Bd3 27.Qh5 Rg7 28.Qg6 Rg6 29.Rfd1 Rf2 (30.Kh1 Rgg2 31.Rg1 Be4 32.Bd4 Rg4 33.Rg2 Rfg2 34.Bc5 Ra2) 0–1. befuddle – B_Alterman (2460), ICC, 2003.

4.d4 Nc6 5.d5 Nb4=+ 6.c3 Na6 7.ef5 Bf5 8.a3 Nc5–/+ 9.Bb5 Bd7 10.a4 Nf6 11.Ba3 a6 12.Bd7 Ncd7 13.c4 Be7 14.Nf3 0–0 15.0–0 b5 16.ab5 ab5 17.cb5 Nb6 18.Nc3 Qd7 19.Re1 Qf5 20.Ne5+= Ra3 21.Nc6+/– Nfd5 22.Ne7 Ne7 23.Ra3 Qf2 24.Kh1 Nf5 25.Ne4 Qb2 26.Ra7 Qb5 27.Rc7 Ne3 28.Qa1+– Qe5 29.Nd6 Qa1 30.Ra1 Nbd5 31.Rd7 Nf6 32.Rb7 g5 33.Raa7 Ne8 34.Nf7 Nf5 35.Ng5 Ned6 36.Rh7 Ra8 37.Ra8 Ne8 38.Re8# 1–0. marus1 – Hrct, internet, 2001.

4.f4 ef4 5.ef5?? (better is 5.Qh5 Ke7 6.ef5+=) 5...Qh4–/+ 6.g3 (better is 6.Ke2!?–/+) 6...fg3–+ 7.Qe2 Ne7 8.Kd1 gh2 9.Rh2 Qb4 10.Bc3 Qf4 11.Rf2 Qg5 12.Nh3 Qh4 13.d3 Nd7 14.Nf4 Nf6 15.Ne6 Be6 16.fe6 0–0–0 17.Be1 Qd4 18.c3 Qa4 19.Kc1 d5 20.Nd2 Nc6 21.Nb3 Ba3 22.Kc2 d4 23.Bh3 Kb8 24.Rf4 Rhe8 25.Bd2 Nd5 26.Rf7?? dc3 27.Qh2 cd2 28.Kd2 Qb4 29.Ke2 Nc3 30.Kf2 Qh4 31.Kg2 Bd6 32.Qg1 Qg3 33.Kf1 Qh3 (33...Qh3 34.Qg2 Qd3 35.Kg1 Ne2 36.Kh1 Re6–+) 0–1. Blaszczak,Jan (1680) – Topolan,Agata, II Puchar Dyrektora Lasow Panstwowych Poland, 2008.

4.f4 Nf6 +=.

4.ef5 Nf6 5.Qf3 Nc6 6.b5 Nb4 7.Na3 a6 8.c3 e4 9.Qh3 Nbd5 10.c4 Nb4= 11.d4 ab5 12.Qc3 d5 13.c5= Nc6 14.Bb5 Bf5=+ 15.Ne2 Be7 16.0–0 0–0 17.Ng3 Bg4 18.h3 Be6 19.Rfe1 Qd7 20.Nc2 Kh8 21.a4 Ng8 22.Qe3 Bh4 23.Ra3 Qf7 24.Bc6 bc6 25.a5 Qg6 26.Qe2 Ne7 27.Bc1 Nf5 28.Nf5 Bf5 29.Rf1 Bd7 30.Kh2 Kg8 31.a6 Ra7 32.Nb4 Rb8 33.Ra4 Rf8 34.Be3 Qe6 35.Nc2 Rfa8 ˝–˝. Woschkat,Karl_Heinz – Wolczek,Stanislaus, HL011, 1998.

4.Nc3 Nf6

5.Bc4 fe4–/+ 6.Bd5 Nd5–+ 7.Nd5 c6 8.Ne3 Be6 9.Ne2 Nd7 10.0–0 Be7 11.Ng3–/+ d5 12.Qh5 g6 13.Qe2 0–0 14.a3 Bf6 15.Rad1 Bg7 16.d4 ed3 17.Qd3 Qe7 18.Qe2 Nb6 19.Rfe1 Qf7 20.Nh1 Rad8 21.Ng4 Bg4 22.Qg4 Nc4 23.Bc1 e4 24.Rf1 Qf5 25.Qe2 Ne5 26.Ng3 Qc8 27.Bb2? Nf3! 28.Kh1 Bb2 29.gf3 ef3 30.Qe3 a6 31.Rg1 Rde8 32.Qh6 Bg7 33.Qh4 Qd8 34.Qg4 Qf6 35.Rd4 Qd4 36.Qd4 Bd4 (37.Rf1 Re2–+) 0–1. Culverhouse,B – Friesen,Bas, Soest op, 1996.

5.ef5 Bf5

6.Qf3 Bc2 7.Rc1 Nc6 8.Rc2 +=.

6.Qf3 Bc2 7.Rc1 Bg6 8.Qb7 +/–.

6.Qf3 Qc8 =.

6.Qf3 Bc8 7.Bc4 c6 8.Ne4 Ne4?? 9.Qf7 (< 9.Qe4 Nd7 10.Qe2 d5=+). kamret (2280) – Godswrath (1825), GameColony.com, 2003.

6.Nf3 Be7=+ 7.Bc4 d5 8.Bb5 c6 9.Ba4 Bg4–/+ 10.d3 d4–+ 11.Ne2 Bf3 12.gf3 Bb4 13.c3 dc3 14.Bc3 Bc3 15.Nc3 Na6 16.0–0 Qd4 17.Ne2 Qd6 18.Re1 0–0–0 19.Rc1 Qd3 20.Qd3 Rd3 21.Ng3 Nb4 22.Re5 Na2 23.Rc4 Rc3 24.Rc3 Nc3 25.Bc2 Ncd5 26.Ne4 Kc7 27.Nf6 gf6 28.Re6 a5 29.Kf1 h5 30.Bb3 Rh6 31.Bd5 cd5 32.Ke2 Rg6 (32...Rg6 33.Ke3 a4–+) 0–1. Meisinger,Peter (1710) – Blankenberg,Bruno (1960), DESC, 2000.

4.Bc4 Nf6

5.d4 Nbd7 6.ef5= Nb6 7.Bb3 e4 8.Nd2 Bf5 9.Ne2 d5 10.Ng3 Bg6 11.Qe2 Bb4 12.Qb5 c6 13.Qb4 a5 14.Qc5 a4 15.0–0 ab3 16.ab3 (worse is 16.cb3 Nbd7 17.Qc3 0–0+=; 16.Nb3 Nc4 17.Bc1 Ra4–+) 16...Kf7 17.h4 (17.Ra8!? Na8 18.Ra1+=) 17...Qc7 18.h5 Nh5 19.Nh5 (19.Nde4 de4 20.Nh5+=) 19...Bh5 (better is 19...Nd7!? 20.Qc3 Bh5–/+) 20.Ne4+= Ra1 21.Ra1 Ra8 (21...Nc8 22.Re1=) 22.Re1 (22.Ra8!? Na8 23.Ba3+/–) 22...Kg8= 23.Ba3?? (better is 23.Bc3=) 23...Nd7–+ (23...de4?! 24.Qh5 Nd5 25.Bc1=) 24.Nf6? (better is 24.Qd6 Qd6 25.Nd6 Ra3 26.Re7–+) 24...Nf6 25.Re7 Qa5 26.Re8+= Kf7 27.Qf8 Kg6 28.Ra8 Qe1 29.Kh2 Qf2 30.Re8?? Qh4 31.Kg1–/+ Qd4 32.Kh1 Ne8 33.Qe8= Kh6 34.Bc1 g5 35.Qf8 Qg7 ˝–˝. Stecko,Artur – Judek,Magdalena, Lubawka op Poland, 2006.

5.f4? fe4 6.fe5 Ng4 7.e6 Qg5 8.Nc3 Nf6 9.Nge2 d5 10.h4 Qg2 11.Rg1 Qh2 12.Nd5 Qh4 13.Ng3 Ng4 14.Qe2 Bd6 15.0–0–0 Bg3 16.Qg2 c6 17.Qg3 Qg3 18.Rg3 cd5 19.Bb5 Nc6 20.Rg4 Rg8 21.Rg7 Rg7 22.Bg7 Be6 23.Rh1 Bg8 24.Rh6 Kf7 25.Bc3 Nd8 26.Rd6 a6 27.Be2 Ke7 28.Rb6 Be6 29.Be5 Rc8 30.Kb2 Rc6 31.Rc6 Nc6 32.Bf4 Nb4 33.Be3 Nc6 34.Bc5 Kf6 35.Bd6 Kg5 36.Kc1 h5 37.Kd1 Bg4 38.a3 Be2 39.Ke2 Nd4 40.Kd1 h4 41.c3 Nf5 42.Bc7 Kg4 43.Ke1 Kf3 44.Kf1 Ng3 45.Kg1 Ke2 46.Bf4 Nf1 0–1. Solano,Agustin – Ugalde,Ronald, Costa Rica, 1997.

5.f4? Ne4 A) 6.fe5?? Qh4 7.g3 Ng3 8.hg3 Qh1–+ (8...Qc4?! 9.ed6 Bd6 10.Qh5 Kf8 11.Qg5 Qe4 12.Kf2–/+); B) 6.Qh5 g6 7.Qe2=+.

5.ef5!? Bf5 6.Nf3 =.

4.d3 Nf6

5.Nc3 Be7 =+.

5.Nd2 Be7 6.c3 =+.

5.Nd2 Be7 6.Be2 0–0 7.a3 c6 8.h3 a5 9.Ngf3 fe4 10.Ne4 Ne4 11.de4 Nd7 12.c3 Nf6=+ 13.Qc2 Qe8 14.0–0–0 ab4 15.ab4 Qf7 16.g4 Be6= 17.Ng5 Bb3 18.Nf7 Bc2 19.Nh6? gh6–+ 20.Kc2 Ne4 21.Rdf1 d5 22.Rh2–/+ c5 23.b5 d4 24.c4? Ra2 25.Kc1 Bg5 26.Kc2 Bf4 27.Rg2 Rfa8 28.Bf3 Nd6 29.Bd5 Kf8 30.f3 R8a4 31.Kb3 Ra5 32.Rff2? R2a4 33.Rc2 Rb4 0–1. mic (2150) – hobgoblin (2200), net–chess.com, 2006.

5.Nd2 Be7 6.Be2 0–0 7.Bf3 fe4 8.de4 a5 9.b5=+ a4 10.a3 Qe8 11.Qe2 Be6 12.Rb1 Nbd7 13.h4 Nc5 14.g4 Ba2 15.Ra1 Bf7–/+ 16.Bg2 Ra5 17.c4 Ra8 18.Rb1 Be6 19.f3 Nfd7–+ 20.Bc3 Nb3 21.Bf1 Nb6–+ 22.Qd1 Nd2 23.Bd2 Qd8 24.Qc1 Bh4 25.Kd1 Bg4! 26.Be2 Bh5 27.Kc2 Nd7 28.Qf1 Bg6 29.Qg2 Nc5 30.Qg4 Be7 31.Nh3 Qd7 32.Qg2 d5 33.cd5 Qd5 34.Rb4?? Ne4!–+ 35.Bc4 Nd2 36.Qg6 Nc4 (36...Nc4 37.Qh7 Kh7 38.Nf4 Kg8 39.Nd5 Na3 40.Kd1 Bb4 41.Nb4 Nb5–+; 36...hg6 37.Bd5 Rf7 38.Nf4 ef4 39.Rf4+=) 0–1. Gentner,M – Stastny,P, Ostrava, 1926.

5.Nd2 Be7 6.Be2 0–0 7.Ngf3 Qe8 8.0–0 Nh5 9.Ne5+= de5 10.Bh5+/– Qb5 11.a4 Qb4 12.Ba3+– Qa3 13.Ra3 Ba3 14.Qb1 Bd6 15.ef5 Bf5 16.Qb7 Nd7 17.Nf3 g6+= 18.Nh4 Nc5= 19.Qf3 Na4?? 20.Nf5+– gf5 21.Qg3 Kh8 22.Qh4 (22.Qh4 Nc5 23.Bg6+–) 1–0. Gates – Grant, corr, 1994.

5.Nd2 Ng4 6.h3 Nf2?? 7.Kf2+/– Qf6 8.Ngf3+– Nc6 9.Ba3 Be6 10.c4 Nd4 11.b5 Nf3+/– 12.gf3 0–0–0 13.Qa4 Kb8 14.Nb3 Qh4 15.Ke2+/– Qf4 16.Bg2 fe4 17.de4 Be7+/– 18.Na5 Ka8 19.Nb7?? Rdf8?? 20.Qa6 Bc4–+ 21.Kd1 Bg5?? 22.Bc1+– Qg3 23.Rg1 Qf2–+ 24.Re1 Qg2 25.Qc6 Qf3 26.Kc2 Qd3 27.Kb2 Rf2 28.Re2 Re2 29.Bd2 Rd2 (29...Rd2 30.Kc1 Ra2) 0–1. pinecrest1981 – Ratman, caissa.com, 2007.

5.Nd2 g6 6.Be2 Bg7 7.c4 0–0 8.h3 Nc6 9.a3 Nd4 10.Bd4 ed4 11.Rc1 Qe7 12.Qb3? fe4–+ 13.c5 d5 14.de4 Be6 15.Qc2 de4 16.Ne4 Nd5 17.Nf3? Bf5–+ 18.Bd3 Nc3 19.Nfd2–/+ Rae8 20.0–0=+ Bh6 21.Rfe1 Qf7 22.Bc4 Be6 23.Qb3?? Bc4–+ 24.Qc4 Qc4 25.Nc4 Ne4 26.Rc2 Nc3 27.Ne5 Rf5 28.Nd3 Re1 29.Ne1 Kf7 30.Nf3 Bg7 31.Rd2 Rd5 32.h4 h6 33.g3 Ke6 34.Ne1 g5 35.Nd3 Kf5 36.f4 gh4 37.Rg2 hg3 38.Rg3 Bf6 39.Rh3 Bg7 40.Rh5?? Ke4–+ 41.Rh3 Ne2 42.Kf1 Nf4 43.Rh4 Rf5 44.Nf2 Kd5 45.Kg1 d3 46.Rg4 Rg5 47.Rg5 hg5 48.Kf1 Bc3 49.Nd1 Kd4 50.Kf2 Nd5 51.Kf3 Bd2 52.Nf2 Bc1 53.Kg4 Ne3 54.Kg5 Nd1 55.Kf5 Nf2 56.Ke6 Bf4 57.Kd7 d2 58.Kc8 b6 59.Kb7 d1Q 60.Ka7 bc5 (60...bc5 61.a4 Qa4 62.Kb7 Ne4 63.Kc8 Nd6 64.Kd8 Qc6 65.Ke7 Qe8 66.Kf6 Qf7#) 0–1. Rajewski,C – Eckl,Josef, Bad Woerishofen, 1992.

4.d4 ed4

5.Bd4 fe4=+ 6.Qh5 g6 7.Qe2 Nf6 8.Bf6 Qf6–/+ 9.Qe4 Qe7 10.Bd3 Bg7 11.Qe7 Ke7 12.c3 a5 13.b5 Nd7 14.Nf3 Nc5 15.Bc2 Bd7 16.a4 Rae8 17.0–0 d5 18.Nd4 Kd6 19.Nd2 Re7 20.Rfe1 Rhe8 21.Re7 Re7 22.N2f3 Ne4 23.Be4=+ Re4 24.Ng5 Re7–/+ 25.Ngf3 Bg4 26.Rc1? Bf3–+ 27.Nf3 Re2 28.c4 dc4 29.Rc4 Rb2 30.h3 Rb4 31.Nd2 b6 32.Kf1?? Rc4–+ 33.Nc4 Kc5 34.Ne3 Kb4 35.Nd5 Ka4 36.Nc7 Be5 37.Nd5 Kb5 38.Ke2 Kc5 39.Ne3 a4 40.Nc2 b5 41.Kd3 b4 42.Kd2 a3 43.Kc1 a2 44.f4 a1Q 45.Na1 Ba1 (45...Ba1 46.Kc2 Kd4–+) 0–1. yulio – Nokarookoff, ChessWorld.net, 2006.

5.ef5 Bf5 6.Bd3 Qd7 7.Qh5+/– g6 8.Bf5 gh5 9.Bd7 Nd7 10.Bd4 Ngf6 11.Nf3 Rg8 12.0–0 Kf7 13.Nc3 c6 14.Rfe1 d5 15.b5 Bb4 16.bc6 bc6 17.Rab1 a5 18.a3 Bc3 19.Bc3+/– Ra7 20.Bf6+– Kf6 21.c4 dc4 22.Rbd1 Rc7 23.Rd6+/– Kf7 24.h4 Nb6 25.Ng5+– Rg5 26.hg5 c3 27.f4. smoothmovermovesagain – Nokarookoff, ChessWorld.net, 2007.

4.d4 Nf6

5.de5 Ne4 6.Nf3 Be6 7.Bd3 Be7 8.Be4 fe4 9.Nfd2 0–0 10.Ne4=+ Nc6 11.0–0 Ne5 12.Re1 Nc4 13.Bc3 Qd7 14.Qd4 Ne5 15.Bd2 Bf5 16.Qd5= Kh8 17.Ng5 Bf6–/+ 18.Bf4?? Nf3! 19.Qf3 Ba1 20.Qh5? g6 21.Qd1 Bf6 (21...Bf6 22.Ne4 Bg7–+) 0–1. ureo – SirGraves, ChessWorld.net, 2005.

5.ef5 ed4 6.Bd3 c5 7.bc5 dc5=+ 8.c3 Nc6 9.Nf3 Qe7 10.Kf1 dc3 11.Nc3= Bd7 12.Qb3 0–0–0 13.Re1 Na5 14.Qc2+= Qd6 15.Ne5 Be8 16.Kg1 Qb6 17.Ne4+/– Be7 18.Rb1 Nc6 19.Bc4 Nb4+= 20.Qe2 Nbd5 21.Nd3 Nc7 22.Qe1 Qc6+= 23.Ng5 Bd6 24.Ne5 Qa4 25.Bb3 Qa6 26.Be6+/– Ne6 27.Ne6 Bh5 28.h3 (28.h3 Rde8 29.Ng7+/–; 28.Nd8!? Rd8 29.Rc1+/–) 1–0. Benassi,Aspasio – Sarlat,Felix, corr Italy–World, 2001.

4.ef5 Bf5

5.b5 Nf6 6.Be2 Be7 7.d4 e4 8.Nd2 d5 9.h3 0–0 10.c4 c6 11.a4 Nfd7 12.c5 e3 13.Ndf3 ef2 14.Kf2 Nf6 15.Bd3 Bd3 16.Qd3 Ne4 17.Ke3?? Bg5 18.Ke2 Ng3 19.Ke1 Nh1 20.Ne2 Bh4 21.Kf1 Nf2 22.Qc2 Ne4 23.Kg1 Bf2 24.Kh2 Nd7 25.Qd3 Qc7 26.Ne5 Rae8 27.Rf1 Re6 28.Bc1 Ne5 29.de5 Qe5 30.Bf4 Rf4 31.g3 Rff6 32.Kg2 Bg3! 33.Rf6 Rf6 34.Ng3 Ng3 35.Qg3 Rg6 (36.Qg6 hg6–+; 35...Qe2!? 36.Kh1 Rf1 37.Qg1 Qf3 38.Kh2 Rf2 39.Qf2 Qf2 40.Kh1 cb5 41.ab5 Qf1 42.Kh2 Qb5 43.Kg3 Qc5 44.Kf4 Qd4 45.Kf3 Qd3 46.Kf2–+) 0–1. Lippert,Ernst – Zeh,Helmut, Alpenpokal op, 1994.

5.Bb5 c6 6.Be2 Be7 =.

5.Nc3 Nc6 6.Nd5 Qd7 7.Be2 Nf6 8.Nf6 gf6 9.a3 0–0–0 10.Nf3 Rg8 11.b5 Ne7 12.0–0 Ng6–/+ 13.Re1 Nf4 14.g3 Bg4 15.Bf1 Qe8 16.d4–/+ Qh5 17.Bg2 Ng2 18.Kg2 f5 19.c3 e4 20.Re3 Bh6 (20...Bh6 21.Rd3 f4–+) 0–1. Nittschalk,Karl – Pleschke,Helmut, 1. B4 Thementurnier, 2000.

5.c4 Nf6=+ 6.Nc3 Be7 7.Nf3 0–0 8.Nd5 Nd5–/+ 9.cd5 c6 10.Bc4 b5 11.Bb3 a5 12.ba5?? Ra5 13.dc6+= Kh8 14.Qc1 Bg4?? 15.Bd5?? b4?? 16.Qc4?? Rc5 17.Qd3?? Nc6–/+ 18.0–0 Bf3 19.Bf3 d5 20.Be2 e4 21.Qg3 d4 22.Rac1 Rc1–+ 23.Rc1 Qb6 24.d3 ed3 25.Bd3+= b3 26.ab3 Qb3= 27.Rb1 Qd5 28.f3 Ne5 29.Be4+/– Qc5 30.Qf2 Rb8? 31.g3?? Nc4?? 32.Bd4+– Rb1 33.Bb1 Qb4 34.Bd3 Nd6 35.Kg2 Qb3 36.Qe2 Qf7 37.Bc5 Bf8 38.Bd6 Bd6 39.Qe4 Qa2 40.Kh3 Qg8 41.Bc4 Qc8 42.Qe6 Qe6+/– 43.Be6 g6 44.Kg4 Kg7 45.h4 Kf6 46.Bc4 h6 47.Kh3 g5+= 48.hg5 hg5 49.Kg4 ˝–˝. Darkseid – retiponziani, ChessWorld.net, 2010.

5.c4 Nf6 6.Nf3 Be7 7.Be2 0–0 8.0–0 Re8 9.d3 Bf8 10.Nc3 Nbd7 11.Re1 h6 12.Nd2 c6 13.a3 Kh8 14.Nde4 d5 15.Ng3 Bh7 (15...Be6 16.Rc1=) 16.f3 (16.cd5!? cd5 17.d4+=) 16...a5+= 17.b5 Nc5 18.Kh1 a4 19.Ra2 (19.bc6 bc6 20.cd5 cd5+=) 19...Qa5 20.bc6 bc6 21.cd5 (21.Ba1 dc4 22.d4 ed4 23.Qd4 Nd5 24.Qc4 Bg8–+) 21...cd5–/+ 22.d4? (better is 22.Rg1–/+) 22...ed4–+ 23.Qd4 Nd3!! 24.Rf1 (24.Bd3 Re1 Pinning (24...Re1 Deflection)) 24...Bc5 (24...Nb2?! 25.Rb2 Ba3 26.Rb5–+) 25.Qh4 (25.Qa4 Qa4 26.Na4 Ra4 27.Bd3 Bd3–+) 25...Nb2 26.Rb2 (26.Nd5 Nd5 27.Rb2 Ba3–+) 26...Qc3 27.Rb7 Ra7 (better is 27...Qa3 28.Bb5 Re7 29.Re7 Be7 30.Bc6–+) 28.Ra7 Ba7 29.Qa4 Bc5 30.Bb5 Re1 31.Qa8 Bg8 (31...Bg8 32.Qa4 Qe3 33.Re1 Qe1 34.Nf1 Qf2–+) 0–1. Nazarov,I (1890) – Kubatko,I (2120), 14th FIDE Open, Voronezh RUS, 2010.

5.Bc4 d5 6.Bb3 Qd6 7.a3. Kern,Mi – Cardoso, corr 3GMM–60, 1995.

5.Bc4 Nf6 6.d3? d5–/+ 7.Bb3 Bb4 8.c3 Ba5 9.h3 d4 (9...0–0 10.Nf3–+) 10.Qf3 (10.Nf3!? Qd6 11.Bc4–/+) 10...dc3–+ 11.Nc3 Bc3 (better is 11...Qd3!? 12.Rd1 Qf3 13.Nf3 Nc6–+) 12.Bc3+= Qd3 13.Qd3 Bd3 14.Be5 c6 (14...Na6 15.Ne2–/+) 15.Ne2 (better is 15.0–0–0!? Bg6 16.Nf3+=) 15...Nbd7–/+ 16.Bd4 c5 17.Nf4 Bf5 (17...cd4 18.Nd3 Ke7 19.Nf4–/+) 18.Bb2 0–0–0 19.0–0 Nb6 (better is 19...Rhe8–/+) 20.g4 Be4 21.Rac1 Nbd7 22.Ne6 b6 23.Nd8 Kd8 24.Rcd1 Bc6 25.Rd6 (25.g5!? Ne8+–) 25...Kc7+/– 26.Rfd1 Rf8 (26...Re8 27.f4+=) 27.Be6 Ne4? (better is 27...Rd8+/–) 28.Rc6! (28.Bd7?! Nd6 29.Be5 Rd8 (29...Kd7? 30.Rd6 Ke8 31.Rc6+–) 30.Bd6 Kd7 31.Bc5 Ke8 32.Rd8 Kd8=) 28...Kc6 29.Bd7 Kc7 30.Be5 Kb7 31.Bf5 Nf2 32.Rd7 Kc6 33.Rg7 Kd5 34.Bg3 Nh3 35.Kg2 Re8 36.Kh3 1–0. Gonzalez Berrendero,C (1740) – Rodriguez Anton,JM, San Sebastian de los Reyes ESP, 2012.

5.Bc4 Nf6 6.Nf3=+ Nc6 7.Ng5 d5=+ 8.Bb5 Ng4 9.h4 h6 10.Nf3 a6 11.Qe2?? ab5–+ 12.a4 Bb4 13.Ne5 Qe7 14.f3 Nf6 15.0–0 Ne5 16.Re1 Bd6 17.Be5 Qe5 18.d4?? Qe2 19.Re2 Kd7 20.Nc3 b4 21.Nb5 (21.Nb5 Bg3 22.Nc7 Kc7 23.Re7 Kc6 24.Rg7 Bh4 25.Re7–+) 0–1. guest495 – guest938, ICS blitz, 2000.

5.d3 Qh4 6.Nf3 Qb4–/+ 7.Bc3 Qc5 8.Be2 Nf6 9.0–0 Be7 10.d4 ed4 11.Nd4 Nc6 12.Nf5 Qf5 13.Nd2 Nd5 14.Bg7= Rg8 15.Bh5 Kd8 16.g4?? Rg7–+ 17.Kh1 Qg5 18.Nf3=+ Qf4 19.Qd5 Rg5?? 20.Ng5+– Qg5 21.Qg5 Bg5 22.Rae1 Kd7 23.f4 Bf6? 24.g5 Bd4 25.f5 Be5 26.g6 hg6 27.fg6 Rh8 28.Rf7 Ne7 29.g7 Rg8 30.h4 Rg7+/– 31.Rg7 Bg7 32.Bg4 Kd8 33.Kg2 Nd5 34.Bf5 Be5 35.Kf3 Nf4 36.Re4 Nd5 37.h5+– Ke7 38.h6 Kf6? 39.Kg4 Ne7+/– 40.Re1 Nf5 41.Rf1 Kg6 42.Rf5 Kh6 43.Rf7 d5 44.Kf5 Bd6 45.Ke6 d4 46.a4 a5 47.Kd5 Kg6 48.Rf1 b6 49.Kd4 Bc5 50.Kd5 Bd6 51.c4 Bc5 52.Kc6 Bd6 53.Rb1?? Be5 54.Rb5 Kf6+/– 55.Rd5 Ke6?? 56.Rd7+– Bf4 57.Rc7 Bc7 58.Kc7 1–0. alaamattar (2280) – pblanctranchant (2305), net–chess.com, 2008.

5.Bd3 Bd3=+ 6.cd3 Nf6 7.Nf3 Nc6 8.b5 Ne7 9.0–0= Qd7 10.Nc3 Ned5 11.Nd5 Nd5=+ 12.a4 Be7 13.d4 e4 14.Ne1 0–0 15.f3 ef3–/+ 16.Nf3 Rae8 17.Qb3 c6 18.bc6 bc6 19.Rac1 Kh8 20.Rfe1 Nf4 21.Qe3 Bg5! 22.Qc3 Re1 23.Re1–/+ Bh6 24.d5 c5 25.g3 Nh3 26.Kg2=+ Qf5 27.Re6 Ng5 28.Rh6+= Qf3 29.Qf3 Nf3 30.Rd6 Nd4 31.Bd4 cd4+– 32.Rd7 Ra8 33.d6+– h6 34.Kf3 Kh7 35.Ke4 Kg6 36.Kd4 Kf6 37.Kd5 g5 38.Rh7 Kg6 39.Re7 Kf6 40.Rh7 a5?? 41.Rh6+– Kg7 42.Re6 g4 43.d7 Rd8 44.Kd6 Rd7 (44...Rd7 45.Kd7 Kf7+–; 44...Kf7 45.Re4 Kf6+–). vello2 – BadTeenWitch, Live Game Caissa's Web, 2005.

5.d4 Nc6 6.Bb5 ed4 7.Bd4 Qe7 8.Ne2 Nf6 9.Bc6 bc6 10.0–0 Qf7 11.Ng3 Bg4 12.Re1 Be7 13.f3 Bd7 14.Qe2 Nd5 15.Nc3 Nf4 16.Qe4+= Ne6 17.Nf5 0–0 18.Ne7 Qe7 19.a4 Qf7 20.Be3 Rfe8 21.b5 Nc5 22.Qh4+= Ne6 23.Qe4 cb5 24.ab5+= Rab8 25.Ba7 Ng5 26.Qh4 Re1 27.Re1 Ra8?? 28.Qg5+– Ra7 29.Qd8 (29.Qd8 Qf8 30.Qd7+–) 1–0. mtrc – docez, internet, 2002.

5.d4 Nc6 6.Bb5 ed4 7.Bd4 Nf6 8.Qf3 Bd7 9.Bf6 Qf6 10.Qf6 gf6 11.Bc6 Bc6 12.f3 Rg8 13.Kf2 d5–+ 14.c3 a5 15.ba5 Bc5 16.Kf1 Bb5 17.Ne2 Be2 18.Ke2 Rg2 19.Kd3 Ra5 20.Nd2 Bd6 21.Nb3 Raa2 22.Rae1 Kf7 23.h4 Bf4 24.Kd4 c6 25.Rd1 h5 26.Rd3 b6 27.Re1 Ra4 (27...Ra4 28.c4 Rc4#) 0–1. dannyboy238 – Nokarookoff, ChessWorld.net, 2006.

5.d4 ed4 6.Bd4 Nc6 7.Bb5 Nf6 8.Qf3 Bd7 9.Bc3 Be7 10.Na3 0–0 11.Ne2=+ Kh8 12.0–0–0?? Ng4–+ 13.Nf4 Bg5 14.g3–/+ a5 15.Bc6 Bc6 16.Qg4 Bh1 17.ba5? Bc6–+ 18.h4 Bf4 19.gf4 Rf7 20.Rg1 Qe7 21.Qh5 Be4 22.f3 Bc6 23.Re1 Qf8 24.Rg1 Re8 25.Nc4 Re2 26.Rg5 Rf2 27.Nd2 Qe7 28.Bd4 Re2 29.Nb3 Re1 30.Kb2 Rf1 31.Rg3 Rh1 32.Rg5 Kg8 33.a6 ba6 34.Na5 Bd7 35.Nb3 Rd1 36.a3 c5 37.Bc3 c4 38.Na5 Be6 39.f5 Bc8 40.f4 Rf1 41.f6 Rf6 42.Nc4? Rf7 43.Nb6 Be6 44.Qh6 R1f4 45.Rg7 Rg7 46.Qf4 Rg4 47.Qe3 Rh4 48.Nd5 Qb7 49.Nb4 Qe4 50.Qg5= Kf7 51.Qg7 Ke8 52.Bf6 Bf7?? 53.Qh8+– Kd7 54.Qd8 Ke6 55.Bh4 Qd4 56.c3 (56.c3 Qd2 57.Nc2+–) 1–0. mtrc – docez, internet, 2002.

5.d4 Nd7 6.Nf3 e4=+ 7.Nfd2 d5 8.g4 Bg6 9.a3 Qh4–/+ 10.Nc3 e3 11.Qe2 Qf2 12.Qf2=+ ef2 13.Kf2 Bc2 14.Nd5 0–0–0 15.Nf4?? Bd6 16.Ne6 Re8 17.Bc4 Ngf6 18.h3 Ne4 19.Ne4+/– Be4 20.Rhe1 Nf6 21.g5 Bd5+/– 22.Bd5 Nd5= 23.Rac1 Kd7 24.Nc5= Bc5 25.dc5+= Rhf8 26.Kg1 Nf4 27.Re8 Re8= 28.Rd1 Kc6 29.h4 g6 30.Rd2 Ne2 31.Kf2+= Nf4 32.Bf6 ˝–˝. mic (2140) – pblanctranchant (2330), net–chess.com, 2008.

5.d4 e4 6.g4 Bg6 7.d5 Nf6 8.g5 Nfd7 9.Qg4 c6 10.Nc3 Ne5 11.Qf4 Nbd7 12.0–0–0 Be7=+ 13.h4 h6 14.gh6= Rh6 15.Ne4+= Bh4?? 16.Nd6+– Ke7 17.Be5 Bg5 18.Qg5 (18.Qg5 Kf8 19.Bg7 Kg7 20.Nf5 Kg8 21.Nh6 Kf8 22.Qg6 Ne5 23.Qg8 Ke7 24.Nf5 Kf6 25.Qg7 Kf5 26.Rh5 Qg5 27.Qg5 Ke4 28.Qe5#) 1–0. wesolyPolak (1825) – NN, GameColony.com, 2002.

5.Be2 Nf6 6.Nf3 Nc6 7.b5 Nb4 =.

5.Be2 Nf6 6.Nf3 Nc6 7.d3 Nb4 8.0–0 Nc6 9.Re1 Be7 10.Nc3 0–0 11.Bf1 Qd7–+ 12.Ne4 Bg4 13.h3 Bh5 14.Ng3 Bg6 15.Rb1 Kh8 16.Nh4 Bf7 17.Nhf5 Ba2–+ 18.Rc1 Bg8 19.d4 ed4 20.Bd4 Bd8 21.Bb2 a6 22.c4 Bf7 23.Bd3 Rg8 24.Bb1? Bg6 25.Qf3 Rb8 26.h4 h5 27.Ne3 Bb1 28.Rb1 Qf7 29.Nd5 Qg6 30.Nf6 Bf6 31.Bf6 gf6 32.Rbd1 Ne5–+ 33.Qf4 b6 34.Re3 Rbf8 (34...Rbf8 35.Ra3 a5–+; 34...Rbe8 35.Rd4–+). shoulders – Nokarookoff, ChessWorld.net, 2007.

5.Be2 Nf6 6.Nf3 Be7 7.Nh4 Be6 8.d4 0–0 9.0–0 Nd5 10.Nf3=+ e4 11.Nfd2 Bf5 12.Bg4 Bg4 13.Qg4 Nb4 14.a3 Nc2 15.Ra2 Nc6 16.Nc3?? N2d4–/+ 17.Qe4 Nf5 18.Qg4 Ne5 19.Qd1 Nh4 20.Nd5 c6–+ 21.Ne7 Qe7 22.g3?? Nhf3 23.Nf3 Nf3 24.Kg2 d5 25.Qc1 Qe4 26.a4 Ne1 27.Kg1 Qg2# 0–1. islanderfan (1845) – chessdeviant (2255), net–chess.com, 2009.

5.Be2 Nf6 6.Bh5 g6 7.Be2 Bg7 8.Nf3 Qe7 9.0–0 Nbd7 10.c4 0–0 11.a3 Rad8 12.d3 e4 13.de4= Ne4 14.Bg7 Qg7 15.Nbd2 Ne5 16.Ne4 Be4 17.Ne5 de5 18.Qc1 Qf6 19.Qe3 Bf5 20.f3 Qh4 21.Qa7 Rd2 22.Rae1 Qd4 23.Kh1?? Qa7–+ (24.f4 ef4–+) 0–1. eds – CruelTeenWitch, Live Game Caissa's Web, 2004.

5.Nf3 Qf6 6.Nc3 Nc6 7.a3 0–0–0 8.Nd5 Qe6 9.Bc4 Nge7?? 10.Nb6!+– ab6 11.Be6 Be6 12.Ng5 Bc4 13.Qg4 Kb8 14.Qc4 Nf5 15.Nf7 1–0. b4_player – NN, GameColony.com, 2002.

5.g4 Bg6 6.h4 c6 7.Nc3= d5 8.Qe2 Nd7=+ 9.h5 Bf7 10.a3 Qc7 11.Bh3 0–0–0 12.g5 Kb8 13.Na4 d4 14.c4 dc3 15.Nc3= Nb6 16.d3 Nd5 17.Nd5 Bd5 18.Nf3 Bd6 19.Rg1 Bf3 20.Qf3 Ne7 21.Qe4 Rdf8 22.Rf1 Rf4= 23.Qg2 Qb6 24.Rc1 Rhf8 25.Be6 Nf5 26.Bf5 R8f5=+ 27.Rc2 Qb5 28.Rd2 e4 29.Qg3 Rg5–+ 30.Qe3 Rfg4 31.de4=+ Qc4?? 32.Bd4?? Bf4 33.Ba7 Kc8 34.Bb6 Qc1 35.Ke2 Qd2! 36.Kd2 Re5 37.Kd3 Be3–+ 38.fe3 Rh5 39.a4? Re5–+ 40.Rf8 Kd7 41.Rd8 Ke7 42.Rb8 h5 43.Rb7 Ke6= 44.a5 Ree4–/+ 45.Bd4 g5 46.a6 Rd4 47.ed4= Rg3 48.Kc4 Ra3 49.Rb6 Kf7? 50.Rc6+– g4 51.b5 g3 52.Kb4 Ra1 53.Rc2 h4+/– 54.Rg2 Ke7 55.Kc5 Ra3 56.a7?? Ra7= 57.b6 Rd7 58.b7?? Rb7–+ (58...Rb7 59.Kd5 Rb3–+) 0–1. Osthus,Reinhard – Zimmermann,Joerg, TT–04 TSC, 2003.

5.Qf3 Qc8

6.Qb3 Qe6 =.

6.Bd3 Bd3=+

7.Qd3 Qg4 8.Qb5 Nd7 9.Qb7 =+.

7.Qd3 Qg4 8.Qh3 Qb4 9.Qc8 Kf7 10.Qc7 Be7 11.Qc3 =.

7.Qd3 Nf6

8.a3 Be7 =.

8.Nf3 Nc6 9.b5 Ne7 10.Qb3 Qf5 (10...Ng6 11.Nc3=+) 11.0–0= g5 12.d4 e4 13.Nfd2 Ng4 (Better is 13...g4!?=) 14.f3+/– Nh2?? (Better is 14...ef3 15.Nf3 Qg6+/–) 15.fe4+– Qg4 16.Qf7 Kd7 17.Kh2 Bh6 18.Qf3 Qe6 19.d5 Qe5 20.Be5 1–0. b4_player (2185) – Kobekato (1835), GameColony.com, 2003.

8.f4 Nbd7 9.Qe2 e4 10.Nc3+/– d5 (10...Be7!?+/–) 11.Nd5!+– Nd5 12.Qh5 g6?? (Better is 12...Kd8 13.Qd5 Bb4 14.Bg7 Re8+/–) 13.Qd5+– Rg8 1–0. sushibu (1680) – b4_player (2180), GameColony.com, 2003.

8.f4 Nbd7 9.Qe2 Be7!? =.

8.f4 Qg4 9.Qf3 Qf3 10.Nf3 ef4 (10...Nbd7 11.0–0=) 11.Bf6 gf6 12.Nc3 Nc6 13.Nd5 Kf7 14.Nc7+= Rc8 15.Nd5 Bh6 16.0–0 Rce8 17.Kf2 Ne5 18.Rae1 Nf3 19.Re8 Re8 20.Kf3 Rc8 21.Rc1 Rc4 22.c3+– Ke6 23.d3 Rc8 24.c4 Rg8? 25.Re1 Kd7 26.Nf6 1–0. market (2250) – kerala (1740), GameColony.com, 2002.

8.f4 Qg4 9.Qf3 ef4 10.Qb7 Qe6 11.Ne2 +–.

3.e4 Nf6

4.Nc3 Ng4 5.Nf3= Be7 6.Be2 0–0 7.h3 Nf2? 8.Kf2+– f5 9.Rf1 fe4+= 10.Ne4 d5 11.Ng3 e4–/+ 12.Kg1 ef3 13.Bf3 Bh4 14.Nh5+= Qd6 15.Ng7 Qb6 16.Kh1+/– d4 17.Bd5 Kg7+= 18.Qg4?? Bg4–+ (18...Bg4 19.hg4 Rf1 20.Rf1 c6–+) 0–1. wood – ItsOnNow, Live Game Caissa's Web, 2005.

4.c4 a6 5.Nc3 Be7 6.Nf3 c5 7.bc5 dc5 8.Ne5 0–0 9.d3 Bd6 10.Nf3 Nc6 11.Be2 Be5 12.Rb1 Nd4?? 13.Ne5+– Qe7 14.Nf3 Be6 15.0–0 h6 16.Na4 b5 17.Bd4 cd4 18.Nb2 bc4 19.Nd4 cd3 20.Ne6 de2+/– 21.Qe2 Qe6 22.e5 Nd7 23.Nd3+/– Rfe8 24.Rfe1 Re7 25.Rb4 f5 26.f4 g5 27.Qf3 Rae8 28.a4 1–0. wlittle (2245) – guillermomoad (1955), net–chess.com, 2004.

4.Bc4 h6 5.Nf3 c6 6.d3 Bg4 7.h3 Bh5 8.g4 Bg6 9.0–0 Nbd7 10.Nc3 Nb6 11.Bb3 Be7 12.a3 0–0 13.Qe2 Qd7 14.Kh2 Nh7 15.Nd1 h5 16.Rg1 hg4 17.hg4 (worse is 17.Rg4 Bh5 18.Ne3 Bg4 19.Ng4 Kh8–/+) 17...Nf6 18.Ne3 Bh7? (18...Kh7!?=) 19.Rg3 (better is 19.g5!? Ne4 20.g6+–) 19...Bg6 20.Rh1 Nh7 21.Kg2 Nc8 22.c4 Bf6 23.Nh4 Bh4 24.Rh4 Ne7 25.c5 (25.Rgh3 a5+/–) 25...b5 (25...Be4 26.de4 Ng6 27.Rh7 Nf4 28.Kf1 Ne2+/–) 26.f3?? (26.Nf5 dc5 27.Be5 cb4 28.ab4 Rad8+–) 26...Rfe8?? (better is 26...Be4 27.de4 Ng6 28.Rh7 Nf4 29.Kh2 Kh7+/– (29...Ne2? 30.Rgh3 g6 31.g5 Qh3 32.Rh3+–)) 27.Rgh3 a5 28.Qe1 ab4 29.ab4 dc5 30.Qh1?? Qd3–+ 31.Ba2 Qe3 32.Rh7 Bh7 33.Rh7 Qd2 34.Kg3 Qf4 35.Kf2 Ng6 (35...Ng6 36.Bb3 Qd2 37.Kg3 Qb2 38.Bf7 Kf7–+) 0–1. Jokmin,Alex – Menu,Vincent, RN–2009–0–00251, 2010.

4.d3 a5 5.b5 a4 6.c4 c6 7.bc6 Nc6 8.a3 Be7=+ 9.Nf3 0–0 10.Be2 Bd7 11.0–0 Na5 12.Nfd2 b6 13.Nc3+= Nb7 14.Qc2 Nc5 15.Rfb1 Qc7 16.Bc1 Rfc8 17.Nb5 Qd8 18.Rb2 Ne6 19.Nb1?? Bb5–+ 20.Rb5 Nd4 21.Qd1 Nb5–+ 22.cb5 Qd7 23.Be3 Qb5 24.Nd2 Qc6 25.Nc4 Bd8 26.d4 b5 27.de5 bc4 28.ef6 Bf6 29.Rc1 c3 30.e5? de5 31.Qc2 e4 32.f3 ef3 33.Bf3 Qe6 34.Kf2 Rab8 35.Qa4 Rb2 36.Rc2 Re8 37.Bc1 0–1. Schmidt,Thomas (1775) – Kauschmann,Herbert (2170), Kreuzberg, 2000.

4.d3 c5 5.a3 c4 6.Nf3 b5 7.dc4+/– bc4 8.Nbd2 Bg4 9.Bc4 a5 10.c3 ab4 11.cb4 Be7 12.h3 Bh5 13.Bb5 Nbd7+/– 14.Rc1 0–0 15.Qb3 Bf3 16.gf3 Nb6 17.a4 Nh5 18.a5 Nc8 19.Bc6 Rb8+/– 20.Qa4 Nf4 21.Rc3 Na7= 22.Bd7 Bg5 23.Nc4+/– Qf6 24.Nb6 Ng2 25.Kf1+– Nh4 26.Qd1 Rfd8? 27.Nd5 Qg6 28.Ba4 Bh6?? 29.Ne7 Kf8 30.Ng6 Ng6 31.Rc7 Rb4 32.Ba3 Rd4 33.Qb3 Ne7 34.Ra7 g5 35.Kg2 f5 36.ef5 Nf5 37.Qf7# 1–0. 1805DYDIDIDY – EduardM, mySchach.de, 2005.

4.d3 Bg4 5.f3 Bd7 6.Be2 Nh5 7.g4? Qh4–+ 8.Kd2 Nf4 9.h3 Be7 10.Nc3?? Bg5 11.Kc1 Ng2 12.Kb1? Ne3 13.Qc1 0–0 14.Ba3?? Nc6 15.Nd1?? Qh6 16.Ne3 Be3–+ 17.Qd1 Bd4 18.Bb2 Nb4 19.Bd4 ed4–+ 20.a3 0–1. bashful – longdongsliver, Live Game Caissa's Web, 2004.

4.d3 Ng4 5.Nf3 Be6 6.Be2 d5 7.a3 a5 8.ba5 Ra5 9.Ne5 Qf6?? 10.Bg4+– de4 11.Be6 Qe6 12.0–0 Re5 13.Be5 Qe5 14.d4 (14.d4 Qf5 15.Re1+–) 1–0. Chairboy – Stoot, ChessWorld.net, 2005.

4.Bd3 Be6 5.Nf3 Nc6 6.a3 Be7 7.0–0 0–0 8.c4 a5 9.Nc3 ab4–/+ 10.ab4 Nb4 11.Ra8 Qa8 12.Be2 c6 13.Ng5 Bd7 14.f4 ef4–/+ 15.Rf4 d5 16.cd5 cd5 17.ed5? Nfd5–+ 18.Nd5 Nd5 19.Rd4? Qa7 20.Kf1 Bg5 21.Rd5 Bh4 22.g3?? Bh3 23.Ke1 Qg1 24.Bf1 Qf1 0–1. I need chocolate – ncc_1701, ChessWorld.net, 2005.

4.Bd3 Bg4 5.Ne2 Be7 6.b5 Nbd7 7.h3 Bh5 8.0–0 0–0 9.g4 Bg6 10.f3 Nc5 11.Bc4 h6 12.Ng3 Nh7 13.d4 Na4 14.Ba3 ed4 15.c3 Nb6 16.Bb3 dc3 17.Nc3 Bf6 18.Bb2 Ng5 19.Kh2 Ne6 20.Rb1 Nf4 21.Nce2 Be5 22.Be5=+ de5 23.Nf4 ef4 24.Ne2 Qh4 25.Nf4 Bh7 26.Qd4 Rad8 27.Qc3 Qg5 28.Kg3 Kh8 29.Qc7 f5?? 30.Ne6+– f4 31.Kg2 Rd2 32.Kh1 Rd7 33.Qc1 Qh4+/– 34.Nf4?? Qg3–/+ 35.Be6?? Re7 36.Bf5+/– Bf5 37.ef5 Nd7? 38.Rg1 Qf3 39.Rg2 Re4?? 40.Ng6 Kg8 41.Nf8 Qh3+/– 42.Kg1 Nf8 43.Rb3 Qh4 44.Rbg3 Qe7 45.Rf2?? Re1–+ 46.Qe1 Qe1 47.Kg2 Qa5 48.f6 gf6 49.Rf6 Qa2 50.Rf2 Qd5 51.Rgf3 Ng6 52.Kh3 Qg5 53.Rf5 Qh4 54.Kg2 Qg4 55.Kf1 Qd1 56.Kg2 Nh4 57.Kh2 Nf5 58.Rf5 Qe2 (59.Kg3 Qe3 60.Kg2 Qe4 61.Rf3 Qe2 62.Kg3 Qb5–+; better is 58...Qc2 59.Kg3 Qf5–+) 0–1. pinecrest1981 – touchandgo, Live Game Caissa's Web, 2004.

4.d4 Qe7 5.Nf3 ed4–/+ 6.Nd4 1–0. gtate (1930) – ludger (1755), net–chess.com, 2005.

4.Qe2 b6 5.Nf3= Bb7 6.d3 Nc6 7.Qd2 Be7 8.b5 Nb8 9.Be2 Nbd7 10.0–0 0–0 11.c4 a6 12.a4 a5 13.Nc3 Ne8 14.Nd5 f6 15.d4 Bd5 16.cd5 ed4? 17.Nd4 Ne5? 18.Ne6 Qd7 19.Nf8 Kf8 20.f4 Nf7 21.e5 de5 22.fe5 fe5 23.Be5 Kg8 24.Bb2 Nfd6 25.Qd3 Nf6 26.Qg3 Nde4 27.Qe5 Bc5+/– 28.Kh1 Nf2 29.Rf2 Bf2 30.Rf1 Bc5?? 31.Qe6 Qf7 32.Bf6 Qe6 33.de6 gf6 34.Rf6 Re8 35.Bg4 Bd6 36.g3 Kg7 37.Rf7 Kg6? 38.Bf5 Kg5 39.h4 Kh6 40.Rh7# 1–0. bby – distaff, Live Game Caissa's Web, 2004.

4.Be2 Ne4 5.Nf3 Be7 6.0–0 0–0 7.Bd3 Nf6 8.Re1 Bg4 9.Be4 d5 10.Bd3 e4 11.Bb5 c6 12.Bc6 bc6 13.d4 Bb4 14.Re2 ef3 15.gf3 Bf3 16.Qd3 Be2 17.Qe2 Re8 18.Qd1 Ne4 19.Nc3 Qg5 20.Kh1 0–1. guest676 – guest868, ICC, 1999.

3.Be5?? de5–+ 4.c3 Nf6 5.e3 Be6 6.Nf3 Nbd7 7.d4 Bd6 8.Be2 0–0 9.0–0 Nb6?? (better is 9...a5–+) 10.de5+= Be5 11.Ne5 Qe7 12.Qd4 Rad8 13.Qf4 Rd6 14.c4+= Nbd7 15.c5+/– Rd5 16.Nf3 Bg4? 17.Qc7+– Qe4 18.Nc3 (18.Nc3 Qb4 19.Nd5 Nd5 20.a3+–) 1–0. Niewold,Jaap (1730) – Pereira,Prashant, IECG, 2004.

4.f3 a6 5.a3 Be7 6.Ne2 0–0 7.d4 ed4 8.Nd4 c5 9.bc5 dc5 10.Nb3 Qd1–/+ 11.Kd1 b6 12.c4 Bb7 13.Kc2 Nbd7 14.Nc3= Rac8 15.Be2 b5 16.Rhd1 bc4 17.Bc4 h6 18.Rd2 Bd6?? 19.Rad1 Bf4? 20.Rd3?? Ne5–/+ 21.Nd5 Nd3 22.Rd3 Bh2?? 23.Ne7+/– Kh8 24.Nc8 Rc8 25.Bf7?? Bd6?? 26.Bc4 Bb8? 27.g4 h5 28.Be6?? Rc6?? 29.Bf6 gf6 30.Rd8 (30...Kg7 31.Rb8 Re6 32.Rb7 Kg6 33.gh5 (33.Nc5?! Rc6+–) 33...Kh5 34.Kc3+– (34.Nc5?! Rc6+–)) 1–0. Slavisa666 – cip82, Live Game Caissa's Web, 2004.

4.Qf3 Bg4 5.Qe3 Qd7 6.b5 Be7 7.Be2 0–0 8.f3 Be6=+ 9.Qa3 a6 10.Qa5 Qc8 11.a4 b6 12.Qc3=+ ab5 13.ab5 Ra1 14.Ba1 Nbd7 15.d4 ed4 16.Qd4 Qb7 17.Bc4 Kh8 18.Nd2 Ne8 19.Qd3 Qa8 20.Bd4= d5?? 21.ed5+– Bd5 22.Bd5 Qa5 23.Ne2 Nef6 24.Bc4 Bc5 25.0–0 Bd4?? 26.Nd4 Ne5 27.Qe3 Re8 28.Qf2 Kg8 29.Bb3 h6 30.Ne4 Nfd7 31.Nf5 Ng6 32.Qd4 Nf6 33.Nf6 gf6 34.Qf6 (34.Qf6 Qc3 35.Qf7 Kh8 36.Qe8 Nf8 37.Qf8 Kh7 38.Qh6#) 1–0. Fischer,Detlev – Hanold,R, BdF, 1981.

4.Nf3 a6 (--> 3.e4 a6 4.Nf3 Nf6).

4.Nf3 Nc6 5.Bb5 Bd7 6.0–0 Ne4 7.Re1 Nb4?? 8.Bd7+– Qd7 (8...Qd7 9.Re4 Nd5+–). FatMaHa – maz_manchester, ChessWorld.net, 2005.

4.Nf3 Nbd7 5.d3 Nb6 6.Nc3 Be6 7.a4 a6 8.a5= Nbd7 9.b5 ab5–/+ 10.Nb5 Nc5 11.Be2 Bd7 12.d4 ed4 13.Nbd4 Nce4 14.Bd3 Nc5 15.0–0=+ Be7 16.Nf5 0–0 17.Ne7= Qe7 18.Re1 Qd8 19.Ng5 Nd3?? 20.Qd3+– h6?? 21.Bf6 hg5 22.Bd8 Rad8 23.Qg3 Bc6 24.Qg5 Rde8 25.Re8 Re8 26.h3 Re6 27.Qd8 Kh7 28.a6 Rg6 29.g3 Rh6 30.a7 Rh3 31.Qh4 Rh4 32.gh4 b6 33.a8Q Ba8 34.Ra8 Kg6 35.Rc8 c5 36.Rc6 Kf5 37.Rd6 f6 38.Kg2 Ke5 39.Rc6 Kd4 40.Rb6 c4 41.Rc6 Kd5 42.Rc7 Kd4 43.Rg7 Kc3 44.Rc7 Kb4 45.Kg3 c3 46.h5 (46.h5 Ka5 47.h6+–) 1–0. Nautiluschess – LostHorizon, ICS blitz, 2001.

4.Nf3 Be7 5.Bc4 0–0 6.Ng5 h6 7.Bf7 Rf7 8.Nf7 Kf7 9.0–0 Nc6 10.c4 Nb4–+ 11.Bc3 Nc6 12.Na3? Ne4 13.d3 Nc3 14.Qf3 Bf6 15.Rae1 Nd4 16.Qe3 c6 17.f4 Qb6 18.fe5 de5 19.Kh1 Qa5 20.Qe5 Qe5 21.Re5 Bf5 22.Re3 Re8 23.Rg3 Re2 24.Nb1 Nb1 25.Rb1 Be5 26.Kg1 b5 27.cb5 cb5 28.Rf3 Nf3 29.gf3 Bd3 30.Rb5 Bb5 31.h3 Ra2 32.h4 Bd4 33.Kh1 Bc6 34.h5 Bf3 0–1. panes (1715) – uree (2145), net–chess.com, 2003.

4.Nf3 Bg4 5.Be2 Ne4 6.0–0 c5 7.Ne5+= Be2 8.Qe2 de5 9.Qe4 cb4 10.Qb7 Nd7 11.Re1 f6 12.Qc6 Rc8= 13.Qe6 Qe7 14.Qa6 Nc5?? 15.Qc8+– Kf7 16.d4 ed4 17.Re7 (17.Re7 Be7 18.Qh8+–) 1–0. Cavanagh,Philip – scotty6354, Yahoo! Chess, 2001.

4.Nf3 h6 5.c4 g6 6.d4= Nbd7 7.Bd3 Bg7 8.de5 de5 9.Ne5?? Ne5 10.Be5=+ 0–0 11.Bg3?? c6 12.Na3 Bg4 13.f3 Bd7 14.Bf4 g5?? 15.Bg3 h5?? 16.Rb1 h4 17.Bd6 Re8 18.0–0 a6 19.c5+– Nh5 20.Re1 b5 21.e5 Nf4 22.Qc2 Nd3 23.Qd3+/– Qc8 24.Qd1 Re6 25.Qb3 a5 26.Nc2 a4 27.Qe3 f6? 28.Rbd1 Bh6?? 29.Nd4 Re8 30.Qe4 f5 31.Qc2 Bg7 32.a3 Be6 33.Ne6 Re6?? 34.Qf5 Qd7 35.Qg5 Rae8 36.Qh4 Qd8 37.Qg3 Qd7 38.Re4 Qf7 39.Rg4 Kh8 40.Rdd4 Kg8 41.Rg7! Qg7 42.Rg4 Qg4 43.Qg4 Kf7 44.Qf5 Kg8 45.h4 Kg7 46.h5 Kg8 47.Qg5 Kh7 48.g4 Rg8 49.Qf5 Kh8 50.Qe6 Kh7 51.Qf5 Kh8 52.e6 Re8 53.Be5 Kg8 54.Qg6 Kf8 55.Qf7 1–0. rla – arok, internet, 2007.

4.f4 Ne4 5.fe5?? Qh4–+ 6.g3 Ng3! 7.Nf3 Qe4 8.Be2 Nh1 9.ed6 Bd6 10.Nc3 Qg6 11.Nd5 Bg3! 12.Kf1 Bh3 13.Kg1 Bf2 (13...Bf2 14.Kh1 Bg2#) 0–1. Osuna,Francisco – Martin,Laura, S.S. de los Reyes, 2000.

4.f4 Bg4 5.Nf3 ef4 6.h3 Bh5 7.Be2 Be7 8.d3 a6 9.0–0 0–0 10.Bc1 Nc6 11.Bf4 Nb4 12.a3 Nc6 13.Nc3 h6 14.g4 Bg6=+ 15.Qd2 Nh7 16.Bh6? gh6–+ 17.Qh6 Ng5 18.h4 Nf3 19.Rf3 Bh4 20.Rh3 Bf6 21.g5 Bg7 22.Qh4 Ne5 23.d4 Nd7 24.Bh5 Bd4 25.Kh1–/+ Qe7 26.Bg6? fg6–+ 27.Qh7 Qh7 (28.Rh7 Kh7–+) 0–1. var – PussBucket, Live Game Caissa's Web, 2004.

4.Bb5 c6

5.Bd3 Qb6 6.a3 Nbd7 =+.

5.Bd3 d5 6.ed5 Nd5 7.b5 Bd6 8.Nf3 Nf4 9.0–0 Nd3 10.cd3 0–0 11.Re1 cb5 12.Be5 b4 13.Bd6 Qd6 14.Qa4 Bd7 15.Qb3 Bc6 16.Qc4 Bf3 17.gf3 Qf6 18.Qb4 Qa1 19.Qb7 Nd7! 20.Qd7 Rab8 21.Qa7 Rb1 22.Rb1 Qb1 23.Kg2 Qd3 24.Qe3 Qg6 25.Kf1 Qb1 26.Ke2 Qb5 27.Kd1 Rc8 28.d4 Qb1 29.Ke2 Rc2 30.Kd3 Rb2 31.Kc4 Qc2 32.Kd5 Rb5 33.Kd6 Qg6 34.Qe6 (34.Kc7 Qb6 35.Kc8 Qa6 36.Kd7 Rb7 37.Ke8 Qa8#) 0–1. Hossa (2235) – Ferret, ICS Unrated blitz match, 1998.

5.Be2 Ne4–/+ 6.Nf3 d5 7.0–0 Ng5 8.Ne5 f6 9.Nf7?? Nf7 10.Bh5 g6 11.Bf3 Ne5 12.Be2 d4 13.f4 Nf7 14.c3 c5 15.bc5 Bc5 16.Qa4 Bd7 17.Qc4 Qe7 18.Qd5 d3 19.Kh1 Qe2 20.Na3 Bc6 21.Rae1 Bd5 22.Re2 de2 23.Re1 0–0 24.Re2 Nc6 25.Nb5 Rfe8 26.Re8 Re8 27.Nc7 Re1# 0–1. Smalec,Joseph – Ruderman,M, Detroit ch–MI opB, 1992.

4.Nc3 a5

5.ba5 Nc6 6.f3 Na5 7.Rb1 Be6 8.g3 Bc4 9.Bc4= Nc4 10.Qe2 Nb6 11.f4 Be7 12.Nf3 ef4 13.gf4 Nh5?? 14.Qb5+– c6 15.Qh5 0–0 16.Rg1 g6 17.Qh6 Nc4 18.Ng5 Bg5 19.Rg5 Ra5 20.Ra5 Qa5 21.f5! Qe5 22.Ba1 gf5 23.Ne2 1–0. themonkey – GMBG, GameColony.com, 2002.

5.b5 b6 6.Bc4 Bb7 7.d3 Be7 8.Nge2 0–0 9.0–0 Nbd7 10.f4 Nc5 11.Qe1 ef4 12.Nf4 Qd7 13.Qg3 Qg4?? 14.Ncd5 Qg3 15.Ne7 Kh8 16.hg3 Ng4 17.Bf7! Na4 18.Be6 Ne3 19.Kf2 Nf1 20.Neg6! hg6 21.Rf1 Rf5 22.Rh1 Rh5 23.Nh5 Be4 24.Ng7# 1–0. kamret (2205) – NN, GameColony.com, 2003.

4.Nc3 a6

5.a3 Bd7 6.Nf3 Bg4 7.Be2 Nc6 8.d3 Be7 9.Nd2 Be2 10.Ne2 Qd7 11.c4 h6 12.0–0 g5 13.b5 Nb8 14.a4 c5 15.Ng3 Kf8 16.Nh5 Qg4 17.Nf6 Qd1+= 18.Rfd1 Bf6 19.Nb3 a5 20.Nc1 Nd7 21.Ne2 Nb6 22.Ng3 Be7 23.Nh5 Nd7 24.Re1 Nf6 25.Nf6 Bf6 26.g4 b6 27.Kg2 Ke7 28.h3 Rag8 29.f3 Rg6 30.Rh1 Rgg8 31.Bc3 Rc8 32.Rab1 Ra8 33.Rh2 Ke6 34.Rbh1 Ke7 35.Be1 Bg7 36.h4+/– f6 37.h5 ˝–˝. Luettig,Hendrik – Sengbusch,Gerhard, Pinneberg–ch, 2004.

5.a3 Be7 6.Nf3 0–0 7.Bc4 Nc6 8.h3 Bd7 9.d3 h6 10.Ne2 b5 11.Ba2 Nh7 12.Ng3 Qc8 13.Bc1 Be6 14.Be6 Qe6 15.Nf5 Bf6 16.c3 Ne7 17.Bh6 Nf5–+ 18.ef5 Qf5 19.Be3 Ng5 20.Ng5 Bg5 21.0–0 Rfe8 22.Bg5 Qg5 23.Qf3 Rab8 24.Qc6 Qf5 25.Qc7 Qd3 26.Rad1 Qc2 27.Rd6 Rbc8 28.Qa7 Qc3+= 29.Qa6 Rb8 30.h4 Qc4 31.g3 Ra8 32.Qb7 Ra3 33.Rd7 Rf8 34.h5 Qb4 35.Rd5 Rb3 36.Re5 Rb1?? 37.Rb1+/– Qb1 38.Kg2 b4 39.Rg5 Qc1 40.Rb5 Qh6 41.Rb4 Qh5 42.Rh4 Qe5 43.Qf3 g6 44.Re4 Qd5 45.g4 Qg5 46.Qg3 Qd5 47.Qf3 f5 48.gf5 Rf5 49.Re8 Kf7 50.Qd5 Rd5 51.Re3 Kf6 52.f4 Kf5 53.Kf3 Rd4 54.Re5 Kf6 55.Kg4 Rd1 56.Rg5 Rg1 57.Kh4 Rg5 58.fg5 Kf5 59.Kg3?? Kg5–+ (60.Kf3 Kh4–+) 0–1. PoPer – csperber, Live Game Caissa's Web, 2004.

5.a3 Be7 6.Nf3 Bg4 7.h3 Bh5 8.Bc4 Nc6 9.g4 Ng4 10.hg4+/– Bg4 11.Be2 Qd7 12.Nd5 h5 13.d4 0–0–0 14.de5 de5 15.Ne5 Be2 16.Nc6 bc6? 17.Ne7 Qe7 18.Qe2 f6 19.Qa6 Kb8 20.Qc6 Rd6 21.Qb5 Rb6 22.Qf5 Re6 23.0–0–0 Re4 24.Qb5 Kc8 25.Qc6 Kb8 26.Bd4 Re6 27.Qb5 Rb6 28.Bb6 cb6 29.Rd7 Qe6 30.Rhd1 Re8 31.R7d6 Qe5 32.Qb6 (32.Qb6 Ka8 33.Rd8 Rd8 34.Rd8 Qb8 35.Qb8#; 32.Rb6 Ka8 33.Ra6#) 1–0. Nda_Vie (2085) – Cruz, internet, 2009.

5.a4 Bd7 6.b5 a5 7.Nf3+= Bg4 8.Be2 Nbd7 9.d4 Bh5= 10.de5 de5 11.0–0 Bd6 12.Ng5 Bg6 13.Bd3 Bh5 14.Nf3 Nc5 15.Re1 Qd7 16.Nd5 Nd5 17.ed5 b6? 18.Ne5+– Bd1 19.Nd7 Kd7 20.Red1 Nd3+/– 21.Rd3 f6 22.Re1 Rae8 23.Rde3 Bc5 24.Re8 Re8 25.Re8 Ke8 26.Kf1 h5 27.Ke2 Ke7 28.f3 Bd6 29.h3 Bf4 30.Kd3 Kd6 31.Ke4+– Bh6 32.Bd4 Bg5 33.c4 g6 34.f4 Bh4 35.Kf3 f5+/– 36.Be5 Kd7 37.g3 Be7 38.h4 Bc5 39.Ke2 Bd6 40.Bd6+– Kd6 41.Kd3 Kc5 42.Kc3 Kd6 43.Kd4 Ke7 44.c5 (44.c5 bc5 45.Kc5+–) 1–0. Andy HB – unitedfan, ChessWorld.net, 2005.

5.a4 Be6 6.Nf3 Nbd7 7.Be2 g6 8.Ng5 Qe7 9.b5 Bh6 10.Ne6 Qe6 11.Nd5 Nd5= 12.ed5 Qd5 13.Bf3 Qc5 14.Bb7+/– Rb8 15.Bc6 ab5+= 16.ab5 Rd8 17.Qg4 f5 18.Qh4 Bg7 19.Ra8?? Ra8–+ 20.Ba8 Qb5 21.Bc1 0–0 22.Bf3 Ra8?? 23.Be2 Qb1 24.0–0? Ra1?? 25.Qc4 Kh8 26.Qc7 Nf6?? 27.Qd8 Ng8 28.Bc4 Qa2 29.Qg8# 1–0. icewater – kleenex2022, Live Game Caissa's Web, 2005.

5.a4 Be7 6.d3 Nc6 7.b5 ab5 8.ab5 Ra1 9.Ba1 Nd4 10.Qb1 0–0 11.Nge2 Ne2 12.Be2 Bg4 13.f3 Bd7 14.0–0 Nh5 15.Nd5 Bg5 16.d4 Nf4 17.Nf4= Bf4 18.g3 Be3 19.Kh1 ed4 20.c3 dc3–/+ 21.Bc3 Bh3 22.Rd1 Bc5 23.Bb4 Bb4 24.Qb4 Qf6 25.f4 Ra8 26.e5 de5 27.Qe4 c6 28.bc6 Qc6 29.Qc6 bc6 30.fe5 h6 31.Bf3 Rc8 32.Rc1 c5 33.Bd5 Kf8 34.Kg1 Ke7 35.Kf2 Be6 36.Be4 c4 37.Ke3 Rd8 38.Ra1 Rd7 39.Ra3 f6 40.ef6 Kf6 41.h4 h5 42.Bc2 Rd6 43.Be4 g6 44.Kf4 Bd5 45.Bc2 Bb7 46.Rc3 Rd4 47.Ke3 Rg4 48.Kf2 Bd5 49.Bd1 Rd4 50.Be2 Be6 51.Ke3 Rd8 52.Bc4 Rc8 53.Kd3 (53.Be6 Rc3 54.Kd4 Ke6 55.Kc3 Kf5–+) ˝–˝. super knight – ismaelarango (1605), internet, 2005.

5.a4 Be7 6.Be2 0–0 7.Nf3 Bg4 8.b5 a5 9.d4 Nbd7 10.0–0 b6 11.Re1 Re8 12.h3 Bf3 13.Bf3 Rb8 14.Ne2 Qc8 15.g4 h6 16.Ng3 g6 17.Qd2 Kg7 18.g5 Ng8 19.gh6 Nh6 20.Rad1 Bf6 21.Bg2 Nf8 22.f4 Nd7? (better is 22...ed4 23.Bd4 Qe6+/–) 23.de5+– de5 24.Qd7 ef4 (24...Qd7 25.Rd7 ef4 26.e5+–) 25.Bf6 Kf6 26.e5! Kg7 27.Nf1 Nf5 28.e6 Qd7 29.ed7 Red8 30.Bc6 Nd6 31.Rd5 Rh8 32.Kg2 Rbd8 33.Re7 Kf6 34.Rde5 Rhf8 35.Nd2 g5 36.Ne4 Kg7 37.Rg5 Kh6 38.h4 Ne4 39.Re4 f5 40.Re8 f3 41.Kf3 f4 42.Rd8 Rd8+– 43.Kf4 Rh8 44.Ke5 (44.Ke5 Rf8 45.Ke6 Rh8 46.Kf7 Rh7 47.Kf8 Rh8 48.Rg8 Rg8 49.Kg8 Kh5 50.d8Q Kg4 51.Qg5 Kh3 52.h5 Kh2 53.Qg2) 1–0. Skrzypczak,Michal (1950) – Glinkowski,Waldemar, Mistrzostwa Sekcji L.K.S. Piast Srem Poland, 2009.

5.Bc4 b5 6.Bb3 =.

5.Bc4 Nc6 6.a3 b5 7.Ba2 Bb7 8.d3 h5 9.Nge2 Nd4 10.Nd4 ed4 11.Ne2 c5 12.c3 dc3 13.Bc3 c4 14.0–0 d5 15.ed5 Bd5? (15...Qd5!? 16.Nf4 Qg5 17.Re1 Be7+/–) 16.Re1 Be7 17.Nf4 Kf8 18.dc4 Bc4 19.Bc4 (19.Qf3 h4+–) 19...bc4 (19...Qd1!? 20.Rad1 bc4 21.Bf6 Bf6+/–) 20.Qe2 Qc7 21.Bf6 Bf6 22.Nd5 Qc6 23.Nf6 gf6 24.Rac1 Rg8 25.g3 h4? (25...Re8 26.Qh5 Kg7+–) 26.Rc4 Qd7 27.Rh4 Rg5 28.Qe3 Kg7 (28...Rd8+–) 29.Qe4 f5 (29...Rh8 30.Rh8 Kh8 31.Qe8 Qe8 32.Re8 Kg7+–) 30.Qa8 (30.Qa8 Rh5 31.Rh5 Kf6 32.Qh8 Kg6 33.Qh6) 1–0. Jokmin,Alex – Pauk,Jozef, SF–2010–0–00060, 2010.

5.Bc4 Nc6 6.a3 b5 7.Bb3 Be7 8.Nf3 Bg4 9.0–0 (9.h3 Bf3 10.Qf3 Nd4=) 9...0–0 10.d3 Qd7 11.Nd5 Rfe8 12.h3 Bf3 13.Qf3 Nd5 14.Bd5 (14.ed5?! Nd4 15.Bd4 ed4=) 14...Rac8?? (better is 14...Rf8+/–) 15.Bf7 Kf8 (15...Kh8 16.Be8 Re8+–) 16.Be6 (16.Be6 Bf6 17.Bd7+–) 1–0. Jokmin,Alex – Bearce,Harold, RN–2009–0–00247, 2009.

5.Bc4 Bd7 6.Bb3 Bc6 (6...Nc6 7.Nf3+=) 7.Nf3 (7.Qf3 Bd7=) 7...h6 (better is 7...Ne4!? 8.Ne4 Be4+=) 8.0–0 Ne4 9.Ne4 Be4 10.Re1 Bg6 11.Ne5 (better is 11.d4!? Be7 12.de5+/–) 11...de5= 12.Be5 Kd7 (12...Be7 13.Qf3 Nc6 (13...Qd2? 14.Bg7 Qb4 15.Bh8+–) 14.Bg7 Rg8=) 13.Qg4 Kc6 14.Re3 (better is 14.Bg7 Bg7 15.Re6 Qd6 16.Qf3 Kb6 17.Rd6 cd6 18.c3+/–) 14...b6?? (better is 14...Kb6 15.Bd4 c5 16.bc5 Ka7 17.c6 b6+=) 15.Qf3+– Kd7 16.Qa8 Bb4 17.Bf7! Bf7 18.Rd3 Bd6 19.Bd6 cd6 20.Qf3?? Be6+/– 21.Qg3 Qe7 22.f4 Nc6 23.Re1 Rf8 24.Qf2 Kc7 25.Rde3 Rf6? 26.f5 Nd8? 27.Rc3+– Kb7 28.Rb1?? b5= 29.Qf3 d5+= 30.Re3 Rf5?? 31.Qf5!!+– 1–0. Renkowski,Piotr – Kozakow,Mikolaj, Poland–sf u11 boys (MA+WM), 2007.

5.Bc4 Be7 6.Nf3 0–0 7.0–0 b5 8.Bb3 Nc6 9.a3 Bd7 10.Re1 Nb8 11.d4 c6 12.de5 de5 13.Ne5 Qc7 14.Nd7 Nbd7 15.f3 Rfd8 16.Qe2 c5 17.bc5 Bc5 18.Kh1 Re8 19.Rad1 (19.a4!?+/–) 19...Ba3= 20.Ba1 Bd6 21.Nd5 Nd5 22.Bd5 Rac8 23.c3 Bh2 24.Qa2 Nc5 25.Bf7 Qf7 26.Qf7 Kf7 27.Kh2 Na4 The isolani on c3 becomes a target 28.Rd7 Re7 29.Rd6 Nc3 30.Ra6 Rb7 31.Rc1 b4 32.Rd6? (32.Bc3 Rc3 33.Rc3 bc3=) 32...Rcc7 (32...Ne4 33.Rb6 Rb6 (33...Rc1?! 34.Rb7 Kg6 35.Bb2=) 34.Rc8 Nf6–+) 33.Bc3 bc3 34.Ra6 Rb2 35.Ra3 c2 36.Re3 Rb1 37.Ree1 Rcb7 0–1. Jokmin,Alex – Razo,Ryan Jose, SN–2009–0–00193, 2009.

5.Bc4 Be7 6.Nf3 0–0 7.0–0 Be6 8.Be6 fe6 9.d4 ed4 10.Nd4 Qd7 11.a3 e5 12.Nf5 Nc6 13.Nd5 g6 14.Nfe7 Ne7 15.Nf6 Rf6 16.Be5 Re6 17.Bd4 Re4 18.f3 Rf4 19.Qd2+= Rf7 20.Rae1 Nf5 21.Bf2 Re8 22.c4 Re1 23.Re1 Re7 24.Qd5+/– Kf8 25.Re7 Qe7 26.Qb7+– Qe2 27.Qc8 Kf7 28.Qc7 Ne7 29.h3 Qd1 30.Kh2 Qd2 31.Bg3 Ke6 32.Qb6 Qd4?? 33.Qd4 1–0. b4_player (1700) – hishamrida (1650), GameColony.com, 2002.

5.Bc4 h6 6.Nf3 Qe7 7.0–0+= Be6 8.Be6 Qe6 9.d4 Be7 10.de5+/– de5 11.Nd5 Nd5 12.ed5+– Qd7 13.Ne5 Qc8 14.a3 0–0 15.Re1 Bf6 16.Qf3 Nd7 17.Re2 Ne5 18.Be5 Be5 19.Re5 Re8 20.Rae1 Re5 21.Re5 Qd7 22.c3 Re8 23.Qe3 Re5 24.Qe5 c6 25.d6+– Qg4? 26.Qe8 Kh7 27.f3 Qc4?? 28.Qe4 Qe4 29.fe4 Kg6 30.d7 f5 31.ef5 Kf5 32.d8Q g5 33.Qd7 Ke4 34.Qb7 Kd3 35.Qc6 Kc2 36.Qa6 Kc3 37.Qh6 Kb3 38.Qg5 Ka3 39.b5 Ka4 40.b6 Kb3 41.Qf4 Kc3 42.Kf1 Kd3 43.Ke1 Kc3 44.Kd1 Kd3 45.Kc1 Kc3 46.Qe4 Kb3 47.Qd4 Ka3 48.Qc4 ˝–˝. b4_player – MGL_XYH, GameColony.com, 2002.

5.Nd5 c6 6.Nf6= Qf6 7.a3 Be7 8.Nf3 0–0 =. ajeffries (2075) – segovia (1840), net–chess.com, 2009.

5.Nf3 (--> 3.e4 a6 4.Nf3 Nf6 5.Nc3).

4.Nc3 b6

5.b5 Bb7 6.d3 Be7 7.Nf3 0–0 8.Be2 Nbd7 9.0–0 d5 10.ed5 Nd5 11.Nd5+/– Bd5 12.c4 Be6 13.Ne5 Ne5 14.Be5 Bd6 15.f4 Bc5? 16.d4+– Be7 17.d5 Bc5 18.Kh1 Bf5 19.Bd3 Bd3 20.Qd3 Re8 21.Qg3 f6 22.Bb2 Re3 23.Qg4 Qd6 24.a4 Rae8+= 25.h3 R8e4 26.Bc1 Re2 27.h4 Qe7 28.h5 h6 29.Kh2 Rc4 30.Rf3 Qe8 31.Rg3 Qe7 32.Qc8 Kf7 33.Ba3? Ba3?? 34.Raa3+/– Rf4?? 35.a5 Rh4–+ 36.Rh3 Qa3 37.Qc7 Re7 38.Qc6 Rh3 39.gh3 Re2 (39...Re2 40.Kg1 Qg3 41.Kh1 Qg2#) 0–1. mic (2140) – nhoj (2050), net–chess.com, 2008.

5.Bb5 Nbd7 6.Nf3 Bb7= 7.d3 Be7 8.0–0 0–0 9.a3 c6 10.Bc4 d5=+ 11.ed5 cd5 12.Bb3 d4 13.Ne2 Bf3 14.gf3= a5 15.f4 Qc7 16.fe5+= Ne5 17.Nd4 ab4= 18.a4 Qb7 19.f4= Neg4 20.Nf5 g6 21.Ne7 Qe7 22.Bd4 b5 23.a5+/– Rfe8 24.Qf3 Qe2? 25.Qe2+– Re2 26.h3 Nh2? 27.Rf2 Rf2 28.Kf2 Nh5 29.Kg2 Nf4 30.Kh2 Ne6 31.Bf2 Nd8 32.a6 Nc6 33.Bd5 Rc8 34.Bc6 Rc6 35.a7 Rc8 36.a8Q (36.a8Q Ra8 37.Ra8 Kg7 38.Bd4 Kh6 39.Rb8+–) 1–0. Gossmann,Gera – Mayer,Lucas, GER–chT U16 Koerbecke, 2000.

4.Nc3 c5

5.b5 a6 6.Nf3 Bd7 7.a4+/– ab5 8.ab5 Ra1 9.Qa1 g6 10.Bc4 Be6 11.Qa2 Qd7 12.Ng5 Bc4+= 13.Qc4 Bh6 14.h4 Rf8 15.0–0+– Bg5 16.hg5 Nh5 17.Nd5 Nf4?? 18.Nf4 ef4 19.Re1 Qg4 20.Bf6?? f3+/– 21.g3 Nd7?? 22.Re3 Nf6 23.gf6 h5?? 24.Qd3 Kd7?? 25.Rf3 b6?? 26.e5 h4 27.Qd6 Ke8 28.Qe7# 1–0. gregorgysi (2250) – segovia (1840), net–chess.com, 2009.

5.b5 Bg4 6.Be2 a6?? (better is 6...Be2 7.Qe2 a6+=) 7.Bg4+– h5 (7...ab5 8.Nb5 Ne4 9.Qe2+–) 8.Bh3 (better is 8.Be2!? Be7+–) 8...ab5 9.Nb5 Ra5 10.Nc3 d5 11.ed5 Nd5 12.Nf3 Nc6 13.0–0 Qd6 (13...Nf4 14.Bf5 Nd4 15.Nd4 cd4+–) 14.Nd5 Qd5 15.Qb1 (15.Ne5 Ne5 16.Be5 Kd8+–) 15...e4 (15...Bd6 16.Re1 b5 17.c4 bc4 18.Bf5+–) 16.Ne1 (better is 16.Re1 Be7 17.Bg7+–) 16...g5 (16...Qd2 17.c4 Qe2+–) 17.Bh8 Nd4 (17...g4 18.Bg4! hg4 19.Qb7+–) 18.Bd4 b6 (18...cd4 19.f3 Qb5+–) 19.Bc3 Bd6 20.g3 (20.Qb6 Ra8 21.f3 c4+–) 20...Bc7 21.Ba5 ba5 22.d3 ed3 23.Nd3 Qd6 24.Qe1 Kf8 25.Qe3 h4 26.Qc5 Qc5 27.Nc5 Bd6 28.Nb7 Be5 29.Rab1 Kg7 30.Na5 Kg6 31.gh4 gh4 32.Nc6 Bd6 33.Rfd1 Bf4 34.Rb6 Bc7 35.Ra6 f5 36.Nd4 Kg5 37.Nf5 Kf4 38.Rd4 Kf3 39.Ra3 Ke2 40.Re3 1–0. Neumann,Frank – Navara,Eduard, EU/WS/O/056 ICCF, 2012.

4.Nc3 c6

5.a3 d5 6.d4 Bd6 7.ed5 cd5 8.de5 Be5 9.Nf3 Bg4 10.Be2 Bc3 11.Bc3+= Nc6 12.b5+/– Nb8 13.h3 Bh5 14.g4 Bg6 15.0–0 Nbd7 16.g5+/– (16.g5 Qc7 17.Qe1+/–) 1–0. Caissa – 300SPARTANS, Live Game Caissa's Web, 2005.

5.a3 Be6 6.Nf3 Nbd7 7.d4 Qb6 8.Be2 a5 9.Na4 Qa7 10.Ng5+= Be7 11.de5 Ne5 12.Ne6 fe6 13.Bd4 c5 14.bc5 Nc6+= 15.Nb6 dc5?? 16.Bf6+– Bf6 17.Na8 Qa8 18.Rc1 0–0 19.Qd6 Bc3 20.Kf1 Bd4 21.Qe6 Kh8 22.f3 Nd8 23.Qd7 Nf7 24.Rb1 Ng5 25.Qd5 h6 26.h4 Nf7 27.Rb7 Nd8 28.Rb6 Qd5 29.ed5 c4 30.Rb5 c3 31.d6 Ne6 32.Ra5 Nf4 33.d7 Bb6 34.Re5 Bd4 35.Re8 (35.Re8 Kh7 36.Rf8+–) 1–0. mtra – LessThanZero, internet, 2002.

5.a3 Be7 6.d4 Qc7 7.Nf3 Bg4 8.de5 de5 9.h3 Bh5 10.g4 Bg6 11.Qd3 Nbd7 12.0–0–0 0–0–0 13.Be2 Nb6 14.Qe3 Kb8 15.Rd8 Rd8 16.Nh4 Qd7 17.Rd1 Qc7 18.Rd8 Qd8 19.Ng6 hg6 20.f4 Nfd7 21.Kb1 g5 22.fe5 Ne5 23.Nb5 Bf6 24.Qg3 Qe7 25.Nd4 Nbd7 26.Nf5 Qf8 27.Nd4 Qe7 28.Nf5 Qf8 29.Nd4 Qe7 30.Nf5 ˝–˝. Caissa – 300SPARTANS, Live Game Caissa's Web, 2004.

5.a3 Be7 6.d4 Qc7 7.Nf3 Bg4 8.de5 de5 9.h3 Bh5 10.g4 Bg6 11.Qd3 Nbd7 12.g5 Nh5 13.0–0–0 0–0–0 14.Qe3=+ Nb6 15.h4 Rd1 16.Nd1 Nf4?? 17.Be5+– (17.Be5 Bd6 18.Qf4 Be5 19.Ne5+–; 17.Ne5?! Ne6+/–) 1–0. Caissa – 300SPARTANS, Live Game Caissa's Web, 2005.

5.a3 Be7 6.Nf3 Bg4 7.h3 Bh5 8.g4 Bg6 9.d3 Nbd7 10.g5 Nh5 11.h4 0–0 12.Bc1 f5 13.gf6 Ndf6 14.Rg1 Qc7 15.Bh3 d5 16.Be6 Bf7 17.Ng5+/– Be6 18.Ne6 Qd6 19.Nf8 Rf8 20.Bg5 d4 21.Ne2 g6 22.c3+– dc3 23.Qb3 Kg7 24.Qc3 h6 25.Be3 Nh7 26.Ba7 Bh4 27.Bc5 Bf2 28.Bf2 Qf6 29.Be3 Nf4 30.Nf4 ef4 31.Bd4 f3 32.Bf6 Rf6 33.Ra2 1–0. marus1 – Poincare, internet, 2001.

5.a3 Be7 6.Nf3 Bg4 7.h3 Bh5 8.g4 Bg6 9.d3 Nbd7 10.g5 Nh5 11.h4 Nf4 12.Bc1 Nh5 13.Bh3 Nf8 14.d4 Qc7= 15.Be3 Ne6 16.de5 de5 17.Be6 fe6 18.Ra2 Rd8 19.Qe2 b6 20.Ra1 0–0=+ 21.0–0 Nf4 22.Bf4 Rf4–+ 23.Rad1? Rdf8 24.Qc4 Rg4?? 25.Kh2=+ Kh8 26.Kh3?? Rff4?? 27.Qe6 Bh5?? 28.Rd3 h6 29.b5 hg5+= 30.Qc6?? 30...Rf3!–+ 31.Rf3 Rh4 32.Kg3 Bf3?? 33.Qc7+– g4 34.Qe5 Bf6 35.Qe8 Kh7 36.Nd5 Bg5 37.Nf4 Rh6 38.Nh5 Rg6 39.a4 Bh6 40.e5 Be4 41.e6 Rg5 42.e7 Bg6 43.Qg6! Kg6 44.e8Q (44.e8Q Kh7 45.Qe4 Kh8 46.Rd1 Rg6 47.Qg6 Bf4 48.Nf4 a6 49.Rd8#) 1–0. marus1 – Falcapone21, internet, 2001.

5.a3 g6 6.d4 Qc7 7.Nf3 Bg4 8.h3 Bf3 9.Qf3 Bg7 10.de5 de5 11.Rd1 Nbd7 12.g4 0–0 13.g5 Ne8 14.Bc4 Nd6 15.Bb3 a6?? 16.Qd3+– (16.Qd3 Nc5 17.bc5+–) 1–0. Caissa – 300SPARTANS, Live Game Caissa's Web, 2005.

5.b5 Be6 6.Nf3= Be7 7.Ng5 Bg4 8.f3 Bd7=+ 9.Bc4 0–0 10.0–0 Qb6 11.Kh1 cb5 12.Bf7 Rf7 13.Nf7 Kf7 14.f4 Bg4 15.Ne2 Nbd7 16.h3–/+ Be2 17.Qe2 Kg8 18.g4 Rf8 19.g5 Ne8 20.Qg4 Qc6 21.Qe6= Kh8 22.Qe7+– Qe4 23.Kg1 Qc2 24.fe5 (24.fe5 Rg8 25.Rab1 (25.ed6?! Qb2 26.Rae1 Nef6+=) 25...Ne5 26.Be5 de5 27.Rb5 Qd2 28.Re5+/– (28.Rb7?! Qe3 29.Kg2 Nf6=); 24.Qd7?! Qb2 25.fe5 Qd4 26.Kh1 Qe4 27.Kg1 Qd4 28.Kh1 Qd5 29.Kg1 Qc5 30.Kg2 A) 30...de5?? 31.Rac1 (31.Qb7?! Rg8+=) 31...Qb4 32.Rf8 Qf8 33.Rc8+– (33.Qb7?! Qd6 34.d3 Qd3+–); B) 30...Qd5 31.Kg1 Qd4=) 1–0. PawnPower – CHED (1625), internet, 2006.

5.Bc4 Qb6 6.a3= a5 7.ba5 Qa5 8.Nge2 Nbd7 9.0–0 Be7 10.d4= 0–0 11.Ng3 Nb6 12.Bb3 ed4 13.Qd4 Be6 14.Nf5 Bf5=+ 15.ef5 d5 16.Ne2 Bc5 17.Qh4 Nbd7 18.Ng3 Qb6 19.Nh5 Nh5 20.Qh5 Bd4 21.Bd4 Qd4 22.Rad1 Qc5 23.a4 Nf6 24.Qh4 Rfe8 25.Kh1 Re4 26.Qg3 Rae8 27.f3 Re2 28.Qh4 Qd6 29.Rg1 R2e3 30.Rdf1 h5 31.h3 Re2 32.a5 Qc7 33.Ra1 Ra8 34.Rge1 Re1 35.Qe1=+ Re8 36.Qc3 Qg3 37.a6?? ba6 38.Qc6=+ Re1 39.Re1 Qe1 40.Kh2 Qe5 41.Kg1 Qe1 42.Kh2 a5 43.Qd6 Qb4 44.Qb4+= ab4 45.g4 hg4= 46.hg4 d4 47.g5 Nd7 48.Kg3 Nc5 49.Kf4 d3 50.Ke3 dc2 51.Bc2+= b3 52.Bb1 f6 53.Kd4 Nd7+= 54.f4 Kf8 55.Kc3 fg5 56.fg5 Ne5 57.Kb3 Nf7 58.f6 (58.Kc2 Ng5 59.Kd3 Ke7=) ˝–˝. Szpakowski,M – Wierzejewski,A, Koszalin Poland–ch sf, 1956.

5.Bc4 d5 6.ed5 cd5 7.Bb3 Bb4 8.Nf3 e4 9.Nd4 Ng4?? 10.Ba4 Kf8=+ 11.0–0 h5 12.f3 ef3 13.Qf3+= Qf6?? 14.Qd5+– Qe7 15.Rae1 Nh2 16.Re7 Ke7 17.Rf7# 1–0. thotares (1700) – alarconconsult, internet, 2007.

5.Bc4 d5 6.ed5 cd5 7.Bb5 Nc6 8.Qe2 =+.

5.Bc4 d5 6.ed5 Nd5 7.Qh5 +=.

5.d3 d5 6.ed5 Bb4 7.a3 –/+.

5.d3 Bd7 6.a3= Be7 7.Be2 0–0 8.Nf3 a5 9.0–0 b5 10.Na2 ab4 11.ab4= Be6 12.Nc1 Nbd7 13.Ra8= Qa8 14.c3 c5 15.bc5 Nc5 16.Nd2 d5=+ 17.ed5 Bd5 18.Bf3 Bf3 19.Nf3 e4 20.de4 Nce4 21.Qb3 Qb8 22.Nd4? Nd2–+ 23.Qb5 Nf1 24.Kf1 Qh2 25.Nc6 Bd6 26.Ne2 Re8 27.c4 Qh1 28.Ng1 Bh2 29.Ne7 Re7 (29...Re7 30.Be5 Qg1 31.Ke2 Re5 32.Qe5 Be5 33.g4 Ne4 34.Kf3 Qh1 35.Ke2 Nc3 36.Kd2 Qd1 37.Ke3 Qe2#) 0–1. Pillath,Markus – Platten,Herbert, Stuttgart–ch, 1993.

5.Bd3 g6 6.Nge2 Bg7 7.0–0 0–0 8.Kh1 Ng4 9.Ng3 Qh4=+ 10.h3 Nf2 11.Rf2 Qg3 12.Ne2?? Qf2–+ 13.Ng1 Qh4 14.Qf1 Bh6 15.Qf3 Bf4 16.Ne2 Bd2 17.Rf1 Be6 18.Bc1 Bc1 19.Nc1 d5 20.Ne2 d4 21.Ng1 g5 22.g3 Qh6 23.g4 Na6 24.a3 Qh4 25.Be2 c5 26.Qf6 Nc7 27.Kh2 Ne8 28.Qe5 b6 29.Nf3 Qh6 30.Ng5 Qg7 31.Qg7 Ng7 32.Nf3 cb4 33.ab4 a6 34.Nd4 b5 35.Nc6 Bc4 36.Bc4 bc4 37.Kg3 Kh8 38.Ne5 f6 39.Nc4 Rac8 40.Ne3 Rc3 41.Kf3 Ne6 42.Ke2 Kg8 43.Kd2 Rc6 44.Nd5 Rd8 45.Ke3? Rcd6 46.Nf6 Kf8 47.Nh7 Ke7 48.e5 Rc6 49.Rf2 Rc3 50.Ke2 Rh3 51.Nf6 Nd4 52.Kf1 Rf3 53.c4 Rf2 54.Kf2 Ke6 55.Ne4 Ke5 56.Nc5 Rd6 57.Nd3 Ke4 58.c5 Rf6 59.Kg3 Kd3 60.Kh4 Nf3 61.Kh5 Ne5 62.Kg5 Rg6 63.Kf5 Rg4 64.Ke5 Rb4 65.Kd6 Rd4 66.Kc6 a5 67.Kb5 a4 68.c6 a3 69.c7 Rc4 70.Kb6 a2 71.Kb7 a1Q 72.c8Q Qb2 73.Ka7 Rc8 (73...Rc8 74.Ka6 Ra8#) 0–1. Rudolf – arok, internet, 2007.

5.Be2 d5 6.ed5 Bb4 7.dc6 Nc6 8.Nf3 =+.

5.Be2 Nbd7 6.Nf3 Be7 7.0–0 0–0 8.d4 Qc7 9.d5 a6 10.a4 cd5 11.ed5 e4 12.Ng5+= Qb6 13.b5 e3= 14.f3 Ne5 15.Nce4 Ne4 16.Ne4+= Nc4 17.Bd4+/– Qc7 18.Qd3 f5 19.Qc4 Qc4 20.Bc4 fe4 21.fe4 Rf1 22.Rf1 Bg5 23.e5 Bg4 24.Re1 Rc8 25.ba6 ba6 26.Bd3 e2 27.Be2 Be2 28.Re2 de5 29.Bf2 Bf6 30.d6 Rb8 31.Ba7 Rb7 32.Bc5 Kf7 33.a5 Ke6 34.Rd2 Kd7 35.Bb6+/– Rb8 36.c4 e4 37.c5 e3 38.Re2 Bd4 39.g3 Kc6 40.Kg2 Rf8 41.d7+– Bf6 42.Re3 Kd7 43.Rd3 Kc8 44.c6 Be5? 45.Rd7 Rf6 46.Rd8# 1–0. Lorinczi Retek,Pedro – Moreno,E, Asturias Primera op–A, 1997.

5.Nf3 Nbd7 6.d4 Qb6 7.a3 Be7 8.Bc4 0–0 9.0–0 a5 10.Qd3 ab4 11.ab4 Ra1 12.Ra1 Qb4 13.Ba3 Qb6 14.Kf1 Qc7 15.de5 Ne5 16.Ne5 de5 17.Be7 Qe7 18.Bb3 Be6 19.Be6 fe6 20.Nd1 Ng4 21.Kg1 Qh4 22.Qg3 Qh5 23.f3= Nf6 24.Nb2 (24...Nd7 25.Nc4=). MT – guest1633, ICC, 2004.

5.Nf3= Be6 6.d4 Nbd7 7.d5 cd5 8.ed5 Bg4 9.h3 Bh5 10.Bd3 Be7 11.g4 Bg6 12.Bg6 hg6 13.g5 Nh5 14.Bc1 a6 15.Rb1 Rc8 16.Rb3 b5 17.Qd3 Qb6 18.Be3 Qb7 19.a4+= Rc4 20.ab5+– ab5 21.Nb5! Qb5 22.Nd2 Rc5 23.bc5 Qd3 24.Rd3 Nc5 25.Ra3 Nf4 26.Bf4 ef4 27.Kd1 Bg5 28.Re1 Kd7 29.Ra7 Kc8 30.Ra8 Kb7 31.Rh8 1–0. b4_player (2240) – serginho2 (1860), GameColony.com, 2003.

5.Nf3= Be7 6.Bc4 0–0=+ 7.d3? d5–+ 8.ed5 cd5 9.Bb3 d4 10.Ne4 Ne4 11.de4 Bb4 12.Nd2 Qg5 13.g3 Bg4 14.Qc1 Bf3 15.Rf1 Be4 16.c3 dc3 17.Bc3 Bc3 18.Qc3 Bg6 19.Qc7 Nc6 20.Qb7 Nd4 21.Nf3 Nf3 22.Qf3 e4 23.Qe3 Qf6 24.Rc1 Rfd8 25.Qc5 Bf5 26.Qe3 Rd3 27.Qf4 g5 28.Qc7 Rc8 29.Qc8 Bc8 30.Rc8 Kg7 31.Rc2 Qe5 32.Ke2 a5 33.Rfc1 Qd4 34.Ke1 e3 35.fe3 Qe3 36.Kf1 Rd6 37.Kg2 Rd2 38.Kh3 Rd4 39.Rf1–+ g4 40.Kg2 Qe4 41.Kg1 a4 42.Rcf2 ab3 43.Rf7 Kg6 44.R7f6 Kg5 45.ab3 Rd2 46.R6f2 Qd4 47.Kg2 Qd5 48.Kg1 Rf2 (48...Rf2 49.Kf2 Qb3–+) 0–1. color1972 – bcholy, ChessWorld.net, 2005.

5.Nf3 Be7 6.Be2 0–0 7.0–0 Nbd7 8.h3 d5 9.ed5 cd5 10.a3 d4 11.Nb1 b6 12.c3 d3 13.Bd3 e4 14.Be2?? ef3–/+ 15.Bf3 Rb8 16.d4 b5 17.Nd2 Nb6–+ 18.Re1 Bb7 19.Bb7 Rb7–+ 20.Qf3 Rc7 21.Re2 Nfd5 22.Rae1 Nc4 23.Nc4–/+ Rc4?? 24.Re5+– Nc3 25.Re7 Na4 26.Ba1 Nb6 27.Ra7 Qd6 28.Rb7 h6 29.Qg3 Qc6?? 30.d5! (30.d5 Rc3 31.Bc3 Qc3 32.Qc3 Nd5 33.Qb3+–) 1–0. shoulders – RageofKlugman, ChessWorld.net, 2007.

5.Nf3 Bg4 6.Be2 Be7 =.

5.Nf3 Bg4 6.Be2 h6 7.0–0+= Be7 8.h3 Bf3 9.Bf3 0–0 10.d4 Nbd7 11.Ne2 Nh7 12.c4+= Bg5 13.Ng3 ed4 14.Bd4 Bf6 15.Nf5 Ne5 16.Be5 Be5= 17.Rb1 Ng5 18.b5 Qf6 19.bc6 bc6 20.Rb7 Kh7 21.Be2 Ne4–/+ 22.Ne3 Nc3 23.Bd3 Kg8 24.Qb3 Qf4–/+ 25.Ng4 h5 26.Ne5= Qe5 27.f4? Qd4–/+ 28.Kh1 Qd3 29.Rc1?? Rfe8 30.c5 d5 31.Qc3 Qc3 32.Rc3 d4 33.Rd3 Re4 34.Rc7 Rf4 35.Rc6 Re8 36.Rd6 Re3 37.R3d4 Rf1 38.Kh2+= Ree1 39.h4 Rh1 40.Kg3 g6 41.c6 Rc1 42.Rd3 Kg7 43.Ra3 g5? 44.hg5+– h4 45.Kg4 Rc4 46.Kf3 Rf1 47.Ke3 Re1 48.Kd2 Re7? 49.Rd7+– Rd7?? 50.cd7 (50.cd7 Rd4 51.Rd3 Rd7 52.Rd7+–) 1–0. khani9 – Steve20, ChessWorld.net, 2007.

5.Nf3 Bg4 6.h3 Be6 7.d4 ed4 8.Nd4 Be7 9.Be2 b5 10.a4+/– 0–0 11.ab5+– c5?? 12.bc5 dc5 13.Ne6 fe6 14.e5 Nd5 15.Bf3 Nd7 16.Nd5 Rb8 17.Ra7 Bg5 18.Rd7! Qa5 19.Nc3 Qb4 20.Ba1 Bf4 21.Qd6 Qc4 22.Be2 Qb4 23.Qe6 Kh8 24.0–0 Ra8 25.Nd5 Qd2 26.Bd3 Rfe8 27.Qf5 (27.Qf5 Bh2 28.Kh2+–) 1–0. hardgamer – pauloroberto, internet, 2006.

5.Nf3 Bg4 6.h3 Bh5 =.

5.Nf3 h6 6.Bc4 b5 7.Bb3 g6 8.0–0 Bg7 9.d4 ed4 10.Nd4 Bd7 11.Qe2 0–0+= 12.f4 g5 13.e5 de5 14.fe5 Ne8 15.e6?? fe6?? 16.Be6 Kh8+/– 17.Rf8 Bf8 18.Nf5 Be6? 19.Qe6+– Bg7 20.Nh6 Nf6 21.Nf7 Kh7 22.Nd8 Nbd7 23.Nf7 Nf8 24.Qf5 Ng6 25.Ne5 Kh8 26.Qg6 Rf8 27.Qg5 Nh7 28.Qe7 Be5 29.Qe5 Nf6 30.Ne4 Kg7 31.Nf6 Rf6 32.Qf6 Kg8 33.Qg7# 1–0. jolaw – arok, internet, 2007.

4.Nc3 Nc6

5.a3 Nd4 =+.

5.a3 Be6 6.d3 d5 7.Nf3 d4 8.Na2 Bd6 9.Qd2 Qe7 10.Be2 Ba2 11.Ra2= Nb4?? 12.ab4+– Bb4 13.c3 dc3 14.Bc3 a5?? 15.Bb4 Qe6 16.Ra5 Ra5 17.Ba5 b6 18.Bc3 0–0 19.0–0 Nd7 20.Qb2 f6 21.Bd1 Kh8 22.Bb3 Qd6 23.Ba4 Nc5 24.Bc2 Rd8 25.Ne5 fe5 26.Be5 Ne6 27.Bd6 (27.Bd6 Rd6 28.Qe5+–) 1–0. Winkler – Pietros, playchess.de, 2001.

5.a3 Be7 6.Bc4 0–0 7.Nf3 Bg4=+ 8.h3 Bh5 9.g4 Bg6 10.d3 Nd4 11.Nd4 ed4 12.Ne2 c5 13.Nf4+= a6 14.Ng6 hg6 15.Qf3 b5= 16.Ba2 Rc8 17.h4 Nd7 18.Qh3 Nb6 19.h5 g5 20.h6 g6 21.h7 Kg7 22.Qh6 Kh8 23.0–0 Bf6 24.Rae1 Nd7 25.Kg2 Bg7 26.Qh3= Ne5 27.f4 gf4=+ 28.Rf4 Qg5 29.Bc1 Qe7 30.Rf2 Qd7 31.Kg3 Rce8 32.Ref1 Re7 33.Bg5 +=. Old Beal – notloBrooks, ChessWorld.net, 2010.

5.a3 Be7 6.Nf3 0–0 7.Be2 a6 8.0–0 b5 9.h3 Bb7 10.Re1 Qc8 11.Bf1 Re8 12.d3 Bf8 13.Ne2 h6 14.Ng3 a5 15.c3 ab4= 16.cb4 Nd8 17.Bc1?? g6 18.Be3 d5 19.Qc1 de4 20.de4+/– Kh7 21.Bb5+– c6 22.Bc4 Ba6 23.Bb3 Bd3 24.Bb6 Bb5 25.Bd8 Rd8 26.Bf7 Kg7 27.Bb3 Qc7 28.Qc3 Bd6 29.Rec1 Rac8 30.Rc2 Qb7? 31.Be6 Rc7 32.Ne5 Be5?? 33.Qe5+– Re7 34.Nf5 gf5 35.ef5 Rf8 36.Qg3 Kh8 37.Qe5?? Qc7?? 38.Qe3 Kh7 39.Rac1 Rd8 40.Re1 Rde8 41.Qc3 Rf8 42.Re3 Rd8 43.Rc1 Nd5 44.Bd5 Rd5 45.f6 Rf7?? 46.Qc2 Bd3 47.Rd3 Rd3 48.Qd3 Kg8 49.Qf3 Rd7 50.Rc6 Qd8 51.Qg4 Kh7 52.Qf5 Kh8 53.f7 Rd1 54.Kh2 Qb8 55.f4 Qf8 56.Rc8 (56.Rc8 Rh1 57.Kh1 Kg7 58.Qg4 Kf6 59.Rc6 Kf7 60.Qg6 Ke7 61.Qe6 Kd8 62.Rc8#; 56.Qf6 Kh7 57.Qg6 Kh8 58.Rc8 Rh1 59.Kh1 Qc8 60.Qh6#) 1–0. mic (2215) – luckylucciano (2210), net–chess.com, 2007.

5.a3 Be7 6.Nf3 0–0 7.h3 b6 8.Bc4= Bb7 9.d3 Nd4 10.b5 a6=+ 11.Nd4 ed4–/+ 12.Ne2 ab5 13.Bb5 c5 14.c3 dc3 15.Nc3 d5 16.e5 Nd7 17.d4 cd4 18.Qd4 Nc5 19.Qd1 d4–/+ 20.Ne2 Bg2 21.Rg1 Bf3 22.Qd4 Ne6 23.Qe3 Qd5 24.Nc3 Qb3 25.Rb1= Bh5 26.Bc1 Qc2 27.Rb2 Nd4? 28.Kf1+– Qf5 29.Bd3 Qf3?? 30.Rg7!! Kh8 31.Rh7 Kg8 32.Rg7! (32.Rg7 Kg7 33.Qh6 Kg8 34.Qh7#) 1–0. Bender,Wolfgang – Mechenbier,Josef, Saarland–ch Germany, 1992.

5.a3 Be7 6.Nf3 Bg4 7.Be2 0–0 8.d3 h6 9.h3 Bh5 10.g4 Bg6 11.Nh4 Bh7=+ 12.Nf5 Qd7 13.h4 a6 14.Ne7 Ne7 15.g5 hg5 16.hg5 Ne8 17.Kd2 Qe6 18.Rh7?? Kh7–/+ 19.Qh1 Kg8 20.Qh5 Qg6 21.Qh4 Qh7 22.Qg3 g6 23.Bf3=+ Qg7 24.Rh1 f6 25.Be2 c5 26.d4 cd4=+ 27.Bc4 Rf7 28.Nd5 Nd5 29.Bd5 Rb8 30.f4 ef4 31.Qf4+/– fg5 32.Qg5 b5 33.Kd3 (33.Kd3 Rc8 34.Bd4+–) 1–0. alaamattar (2100) – beezaman (1960), net–chess.com, 2005.

5.Ba3 Bg4 6.f3 Bh5 7.g4? Bg6 8.b5 Nd4–/+ 9.Nh3 Qd7 10.f4 ef4 11.Nf4 Qg4 12.Qg4 Ng4 13.h3? Ne5?? 14.0–0–0 0–0–0 15.Ng6 Ng6 16.Rg1 Nf3 17.Rg3= Nh2 18.Bc4 Ne5 19.Bd5 f6 20.Rg2 Nhf3 21.d4 Nh4 22.Rg3 f5?? 23.de5+– fe4 24.Ne4 Nf5 25.Rc3 de5 26.Nc5 Bc5 27.Rc5 Ne3? 28.Rd2 Rd5 29.Rcd5 Nd5 (29...Nd5 30.Rd5 e4+–). KaiKerling – andre2004, ChessWorld.net, 2005.

5.b5 Ne7 6.d4 ed4 7.Qd4 c5 8.Qd2+= b6 9.0–0–0 Bb7 10.f3 Ng6 11.Bc4 Qc7 12.Nd5 Nd5 13.Bd5 0–0–0? 14.Nh3 h6 15.Nf4 Nf4 16.Qf4 Rd7 17.Kb1 Rg8 18.Rd2 Bd5 19.Rd5 Qd8 20.Rhd1 g6 21.Bf6 Qe8 22.e5 Qe6 23.ed6+– Qe2 24.a4 Bg7 25.Bg7 Rg7 26.R1d2 Qe1 27.Kb2 Rg8 28.Re5 Qf1?? 29.Qe4 (29.Qe4 Qb1 30.Kb1 Kb8 31.Re8 Re8 32.Qe8 Rd8 33.Qd8 Kb7 34.Qc7 Ka8 35.Qc8#) 1–0. Sandi,Sandian – Hammond,Grant, 2006.

5.b5 Ne7 6.Nf3 b6 7.Bc4 Bb7 8.0–0 Ne4 9.Ne4 Be4 10.Bf7 Kd7? 11.Re1 Bd5?? 12.Ne5! de5 13.Qg4 Kd6 14.Be5 Kc5 15.Rab1 Nc6 16.d4 Kc4 17.Qe2 (17.Qe2 Kc3 18.Qd3#) 1–0. gtate (2520) – luckylucciano (2200), net–chess.com, 2007.

5.Bb5 a6 6.Bc6 bc6 7.Nf3 Be7 8.d4 d5 (8...a5 9.a3 ed4 10.Nd4 Bd7+=) 9.ed5 (9.Ne5 de4 10.Nc6 Qd6 11.Ne7 Qe7+=) 9...ed4 (9...e4!? 10.Ne5 cd5+=) 10.Nd4 Bb4 (10...cd5 11.0–0 Qd6 12.Re1=) 11.dc6 (better is 11.Qe2!? Qe7 12.Qe7 Be7 13.Nc6+/–) 11...0–0 (11...Qe7 12.Kf1+=) 12.0–0 Bc5 13.Nf3 Qd1 (13...Bf5 14.Na4 Bd6 15.Re1=) 14.Rad1 Bg4 (14...Rb8 15.Na4 Ba7 16.Rfe1+/–) 15.Rd3 (15.Nd5 Nd5 16.Rd5 Rfb8 17.Bg7 Bf3 18.gf3 Kg7 19.Rc5 Rb2+/–) 15...Rab8 (15...Bf5 16.Rd2 Rfd8=) 16.Bc1 (16.Na4 Bd6 17.Ba3 Bf3 18.gf3 Ba3 19.Ra3 Rb4=) 16...Bb4 (16...Bf5 17.Rdd1+=) 17.Nd5 (17.a3 Ba5 18.Nd5 Nd5 19.Rd5 Rb5 20.Rb5 ab5+=) 17...Nd5= 18.Rd5 Bf3 19.gf3 Rb6 20.a3 (20.Bf4 Rc6 21.Rb1 a5=) 20...Bd6+= 21.Re1 Rc6 22.a4 (22.Re2!?+=) 22...Rc2–/+ 23.Be3 Rd8 (23...Re8 24.Rb1–/+) 24.Kh1 (better is 24.Rb1–/+) 24...c5?? (better is 24...Rc4–/+) 25.Rd6?? (better is 25.Red1 Kf8 26.Rd6 Rd6 27.Rd6+–) 25...Rd6–+ 26.Bc5 Rc5?? (better is 26...Re6 27.Be3 f6–+) 27.Re8# 1–0. Diaz Perera,Alejandro – Agejas Garcia,Jorge, Gran Canaria ESP, 2012.

5.Bc4 a6 6.Nf3 Nb4 7.0–0 h6 8.Nd5 Nbd5–/+ 9.Bd5 c6 10.Bb3 Ne4 11.Be5? de5–+ 12.Ne5 Be6?? 13.d3?? Bb3 14.ab3 Ng5 15.Re1 Be7 16.Qg4 0–0 17.Rad1 Bf6 18.Nf3 Nf3 19.Qf3 Qd4 20.Re4 Qc3 21.Qe2 Bg5 22.Rc4 Qf6 23.g3 b5 24.Rc5 a5 25.Qe4 Rac8 26.h4 Rfe8 27.Qh1 Be3! 28.fe3 Re3 29.Qg2 Qd4 30.Rf5 Rg3 31.Rf2 Rg2 32.Kg2 Qg4 33.Kh2 Qd1 34.Kg3 h5 35.c4 bc4 36.bc4 Qd3 37.Rf3 Qc4 38.Rf5 Qg4 39.Kh2 Qf5 40.Kg3 Rb8 41.Kg2 Rb2 42.Kg1 Qf2 (42...Qf2 43.Kh1 Qe1#; 42...Qb1#) 0–1. rla – gurvinder372, internet, 2007.

5.Bc4 Nb4 6.a3 Nc6 7.f4 ef4 8.Nf3 Be6 9.Bd3 d5 10.ed5 Nd5 11.Nd5 Qd5 12.0–0. abhijit – nishantkumar, net–chess.com, 2002.

5.Bc4 Be7 6.a3 0–0 7.Nge2 Be6 8.d3 Qd7 9.Nd5 a6 10.f4 Bg4 11.h3 Nd5 12.ed Bh4? 13.Kd2!

5.Nd5 Ne4–/+ 6.f3? Nf6 7.Nf6 gf6 8.Bc4 Bf5 9.Qe2 Bc2 10.Bb5 a6 11.Bc6–/+ bc6 12.d3 Ba4 13.a3 a5 14.ba5 Ra5 15.Bc3 Rc5–+ 16.Bb2? f5 17.f4?? Rc2 18.Qd1 Qb8 19.Rb1 Qb6 20.Qf3 Rb2 21.Rb2 Qb2 22.Ne2 Bh6 23.Kf2 ef4 24.g4 Qe5 25.h4 fg4 26.Qg4 Qe3 27.Ke1 f3 28.Qe4 Qe4 29.de4 fe2 30.Ke2 c5 31.Rc1 Bc1 (31...Bc1 32.e5 c4 33.ed6 cd6–+) 0–1. Cleopatre – apn, internet, 2007.

5.b5 Nd4

6.a4 c6 7.Nf3= Nf3 8.Qf3 Bd7 9.bc6 Bc6 10.Bb5+= Qb6 11.Nd5 Nd5=+ 12.ed5 Bb5 13.ab5 Qb5 14.Bc3 Be7 15.d3 0–0 16.Kd2? Bg5–+ 17.Ke2 Qc5 18.d4?! ed4 19.Qf5 Rfe8 20.Kd3 Qc3 0–1. kamera – antrobus, GameColony.com, 2002.

6.a4 Be7 7.Nf3 =+.

6.Bc4 c6 7.Nf3 d5=+ 8.ed5 cd5 9.Nd4 ed4–/+ 10.Bb3? dc3–+ 11.Bc3 Be6 12.0–0 Bc5 13.Be5 0–0 14.d4 Ba3 15.c4? Ne4 16.f3? Bb2?? 17.Rb1?? Nc3–+ 18.Qc2 Nb1 19.Qb2 Bf5 20.cd5 Rc8 21.d6? Qb6 22.a4? Kh8 23.Kh1? f6 –+. gtate (1930) – mctayto (1850), net–chess.com, 2006.

6.Bc4 d5 7.ed5 Bc5 8.Na4 b6 9.Nc5+/– bc5 10.Bd4 cd4+= 11.Qf3 0–0= 12.d6 Bg4 13.Qg3 cd6–/+ 14.Bd3 Qc8 15.h3 Bh5 16.Be2 Be2–+ 17.Ne2 Qc2 18.a4? Ne4 19.Qf3 Qd2 20.Kf1 Ng5 21.Qg4 Rac8 22.g3 Rc2 23.h4 Ne6 24.h5 d3 25.Re1 Nd4 26.Kg2 de2 27.h6 g6 28.Kh3 Nb3 29.Rh2 Rc1 30.Re2 f5 31.Qf3 e4 32.Qb3+– Rf7 33.Rd2 Re1 34.Kg2 Kf8+– 35.Rh1 Rh1 36.Kh1 Rc7 37.Qb2 d5 38.Qh8 Kf7 39.Rd5 Rc1 40.Kg2 Ke6 41.Qe5 Kf7 42.Rd7 Kf8 43.Qe7 (43.Qe7 Kg8 44.Qd8#; 43.Qh8#) 1–0. McComb,Zach – Portis,Jason, Michigan Amateur op, 2004.

6.Bc4 Be7 7.Nce2 Bg4 8.f3 Bh5 9.g4 Bg6 10.Nd4+/– ed4 11.Bd4 d5 12.ed5 0–0 13.Nh3 Nd5= 14.Qe2? Bh4 15.Nf2?? Nf4–+ 16.Qf1 Qd4 17.c3 Rfe8 18.Kd1 Qf2 19.Qf2 Bf2 20.Rf1 Bc5 21.h4 Bd3 22.Bd3 Nd3 23.Kc2 Rad8 24.f4 Re2 25.Rf3 Ne1 26.Re1 Rdd2 27.Kb3 Rb2 28.Kc4 Re1 29.Kc5 b6 30.Kc6 Re7 31.Rd3 f6 32.a4 Rbe2 33.Kb7 c5 (33...c5 34.Kc6 R2e6 35.Kd5 Re4–+) 0–1. abhijit – vaingrecsky (1815), net–chess.com, 2002.

6.Bd3 Be7 7.Nge2 Ne2 8.Qe2 0–0 9.0–0 c6 10.Rab1 Bg4 11.Qe3 Re8 12.bc6 bc6 13.Ba1 Qc7 14.Bc4 Bh5 15.Rfe1 Bg6 16.d3 Rad8 17.Qf3 Bh5 18.Qg3 Bg6 19.a3 Nh5 20.Qg4 Bf8 21.Bb3 Nf6 22.Qf3 Qa5 23.Ba4 Re7 24.Bb2 (24.Bc6? Rc7 25.Bb5 Rc3 26.Bc3 Qc3–+) 24...Rc7 25.Qg3 Nh5 26.Qg4 Nf4 27.Bb3 Re8 28.Qf3 Ne6 29.Ne2 c5? (better is 29...Be7=) 30.Bc3+/– Qa6 (30...Qa3?? 31.Ra1 Qa1 32.Ra1+–) 31.Bc4 Qc8 32.Bb5 Ree7 33.Ba5 Rb7 34.Ba6 Qa8 35.Bb7 Rb7 36.h4 h6 37.h5 Bh7 38.Bd2 Qb8 39.Rb7 Qb7 40.Qg3 Qb2 41.Rc1 Kh8 42.Qf3 Kg8 43.a4 Nd4 44.Nd4 Qd4 45.c4 Qb2 46.Qd1 f5 47.Rb1 Qa2 48.f3 f4 (48...Be7+–) 49.Bc3 Qa3 50.Qc2 1–0. capablancaven – skyer404 (1670), gameknot.com, 2011.

6.Nge2 c5 7.bc6 Nc6 8.h3 Be7 9.Ng3 Be6 10.Bb5 0–0 11.0–0 Nd4 12.Bd3 Rc8 13.Nce2 Nc6 14.a3 Nd7 15.Kh1 Nc5 16.f4 Nd3 17.cd3 f6 18.d4 Qb6 19.Rb1 (better is 19.d5!? Qb2 20.de6=) 19...Ba2 20.d5 Bb1 21.Qb1 Nb8 22.Nf5 Rf7 23.d4 Nd7 24.Neg3 Bf8 25.Qa1 Rc2 26.de5 Qb2?? (better is 26...fe5 27.fe5 de5 (worse is 27...Qb2 28.Qb2 Rb2 29.e6+=; worse is 27...Rb2 28.e6+=) 28.Be5 Ne5 29.Qe5 g6–+) 27.Qb2+= Rb2 28.e6 Nc5 29.ef7 Kf7 30.Nd4 Rd2 31.Nb5 a6 32.Nc7 Rd3 33.Rf3 Rf3 34.gf3 g6 35.Ne2 Bh6 36.Kg2 Ke7 37.Kg3 Kd7 38.Na8 Na4 39.Nd4 Bf8 40.Nc7 Bh6 41.Nce6 Nb6 42.Nc2 Ke8 43.Ne3 Bf8 44.Kf2 Be7 45.Ke2 Kd7 46.Kd3 Na4 47.Kc4 Nc5 48.Nc5 dc5 49.a4 b6 50.e5 g5? (better is 50...Bd8+/–) 51.e6+– Kd8 52.fg5 fg5 53.Nf5 Ke8 54.d6 (54.d6 Bd6 55.Nd6 Kd8 56.Kd5+–) 1–0. Skrzypczak,Michal (1990) – Plonczak,Mateusz (1965), Druzynowe Mistrzostwa Polski w szachach Poland, 2012.

6.Nge2 Ne2 7.Be2 Be7 8.0–0 Be6 9.f4 ef4 10.Rf4 0–0 11.d4 c6 12.Rb1 Qc7 13.a4 d5 14.e5 Nd7 15.Rf1 c5 16.Bf3 cd4 17.Nd5 Bd5 18.Bd5 Ne5 19.Kh1 Bf6 20.Bd4+= Rad8 21.b6 Qd6 22.c4+/– a6 23.Bc3 Qd7 24.Be5 Be5 25.Qf3 Bf6 26.Bb7+– Qa4 27.c5 Be5 28.c6 Qh4 29.g3 Qc4 30.c7 Rd2 31.c8Q Rc8 32.Bc8 Qa2 33.Rbd1 (33.Rbd1 Rd1 34.Qd1+–) 1–0. Hassim – Pandit, email 4AMM–09, 1997.

6.Nge2 Qe7 =.

6.Nge2 Bg4 7.f3 Nf3 8.gf3 Bf3 9.Rg1 Ng4 10.Rg3 Qh4 11.Nd5 Kd8=+ 12.d3 Nh2–+ 13.Kf2 f5! 14.Bg2? Be2 15.Qe2 f4 16.Kg1 fg3 17.d4 Ng4 18.a4 Be7 19.Ne7 Qh2 20.Kf1 Ke7 21.Ke1 Rhf8 22.de5 Rf2 (22...Rf2 23.Bf1 Re2 24.Be2 Qg1 25.Kd2 Qe3 26.Kd1 Nf2 27.Ke1 g2 28.ed6 Kd7 29.dc7 g1Q#) 0–1. Panke,W – Wochnik,M, corr we cup pr, 1994.

6.Nf3 Bg4 7.Be2 Ne2 8.Qe2 Be7 9.0–0 0–0 10.Qe3 (10.h3 Bh5=) 10...Re8 (10...Be6 11.h3=) 11.Ne2 (11.h3 Bh5=) 11...Bf8 (11...a6 12.a4+=) 12.Ng3 (12.h3 Bd7 13.Nc3 c6 14.bc6 Bc6+=) 12...a6+= 13.a4 Qd7 14.c4 c6 15.d4 Bf3 16.Qf3 ab5 17.ab5 Ra1 18.Ba1 cb5 19.de5 (19.cb5 Qb5 20.Rc1 Ra8+=) 19...de5–/+ 20.Re1? (20.cb5 Qb5 21.Rc1 Bc5–/+) 20...Qc6?? (better is 20...bc4 21.Bc3 Bc5–+) 21.cb5–/+ Qb5 22.Nf5 (22.h3 Bc5–/+) 22...Ra8 (22...Qc6!?–/+) 23.Nh6+= gh6 24.Qf6 Qa5 25.Rf1?? (better is 25.Kf1 Bg7 26.Qd6+=) 25...Qa1–+ 26.f4 Bc5 0–1. Zampier,Alexandre – Cubas,Jose Fernando (2455), Maringa BRA, 4th Open, 2014.

6.Nf3 Bg4 7.Be2 Ne6 8.h3 Bh5 9.g4 Bg6 10.g5? Ne4–+ 11.d3 N4g5 12.Ng5 Qg5 13.Bf3 0–0–0 14.Bc1 Qe7 15.Be3 Kb8 16.Qc1 Nd4 17.Bd5 Bh5 18.Rg1 Nf3?? 19.Kf1?? Qd7 20.Rg3 Nh4 21.Qa3 b6 22.Bc6 Qc8 23.Bg5 Nf5 24.Rg1? f6 25.Bd2 Nd4 26.Rc1 d5! 27.Qa4 Qh3 28.Ke1 Nf3 29.Kd1 Ng1 30.Ne2 Qf1 (31.Be1 Qe2#) 0–1. Durez,Cedric – Van Rompu,Alexandre (1930), Bethune op, 2000.

6.Nf3 Bg4 7.Be2 Bf3 8.Bf3= Be7 9.0–0 0–0 10.Rb1 a6 11.ba6 Ra6 12.Bc1 Ra7 13.d3 b6 14.Be3 Re8 15.Bd4 ed4 16.Nb5 Ra2 17.Nd4 Qd7 18.c4 Ra3 19.Nb5 Ra5 20.d4 c6 21.Nc3 Ra3 22.Qd3 Qa7 23.d5 cd5 24.ed5 Nd7 25.Qc2 Qa5 26.Ne4 Ne5 27.Be2 Rc8 28.Qc1 Ra4 29.Nc3 Ra3 30.Nb5 Ra2 31.Re1 h6 32.f4+/– Ng6 33.Bd3 Bh4 34.g3 Bf6 35.Bg6 fg6 36.Re6 Kh7 37.Nd6?? Qc5–+ 38.Kh1 Qf2 39.Rb2 Rb2 (39...Rb2 40.Re2 Re2 41.Qg1 Qf3 42.Qg2 Qg2#) 0–1. Bestia_03e – Comet_b23_3, computer chess game, 2000.

6.Nf3 Bg4 7.h3 Bf3 8.gf3 d5 9.ed5 Nd5–/+ 10.Nd5 Qd5 11.Bd4 Qd4 12.c3 Qb6 13.Be2 Bc5–+ 14.0–0 Qg6 15.Kh2 0–0–0 16.Qe1 Qh6 17.a4 Qf4 18.Kh1 e4 19.fe4 Bd6 20.Bg4 Kb8 (20...Kb8 21.Kg2 Qh2 22.Kf3 h5–+) 0–1. Neumann,Frank (1650) – D,A (1880), RSX16D – Goldener Oktober–1, 2007.

6.h3 g6 7.a4 Bh6 8.Bc4 Be6 9.Be6 Ne6 10.Nge2 Nh5 11.Nd5 c6 12.Ne3 0–0 13.0–0 c5 14.Nd5 Qh4 15.d3 f5 16.Bc1 f4 17.Kh2 Ng5 18.Ng1+= Ng3?? 19.fg3+– Qg3 20.Kh1 f3 21.Nf3 Rf3 22.Rf3?? Nf3+= 23.Qf3 (23.Qf3 Qe1 24.Kh2 Bc1 25.Qf6+/–; < 23.gf3 Qh3 24.Kg1 Qg3 25.Kf1 Qh3 26.Ke2 Qg2 27.Ke1 Qg1 28.Ke2 Qg2 29.Ke1 Qg1 30.Ke2 Qg2=) 1–0. Grzywna,S – NN, ZDK–Sarzyna Poland, 1982.

5.Bb5 Bd7

6.a3 a5 7.ba5 Ra5 8.Qf3 =+.

6.a3 Nd4 7.Bd7= Qd7 8.Nf3 Qe6 9.Ng5 Qg4 10.Qg4 Ng4 11.Nd5 0–0–0?? 12.Bd4+– ed4 13.Nf7 Be7 14.Ne7 Kb8 15.Nh8 Rh8 16.Nf5 Rf8 17.Nd4 Nf2 18.0–0 (18…Rf4 19.Rf2 Rf2 20.Kf2+–) 1–0. Marshall,Ron – Davies,Stephen, IECC, 1996.

6.a3 Be7 7.Bc4 0–0 8.Nge2 a6 9.d3 Nd4 10.Nd4 ed4 11.Ne2 c5 12.0–0 b5 13.Ba2 Be6 14.f3 a5 15.Be6 fe6 16.bc5 dc5 17.c3 dc3 18.Bc3 b4 19.Bb2 Qb6 20.Qc1 Rfd8 21.Qc4 Nd7 22.Nf4 Attacks the isolani on e6 22...Nf8 23.Nh5 g6 (23...Qa6 24.Bg7 (worse is 24.Ng7 Rd3 25.Qc2 ba3–/+) 24...Rd3 25.Qc1=) 24.Nf6= Kf7 25.Ng4 Nd7 26.f4 Nf6 27.Ne5 Kg8 (27...Kg7 28.f5 Qa6 29.fg6 Qc4 30.dc4+=) 28.f5+/– gf5 29.Rf5 1–0. Niewold,Jaap (1730) – Jones,Michael S, IECG email, 2004.

6.Bc6 Bc6 7.d3 g6 8.Nf3 Bg7 9.Bc1 0–0 10.0–0 Re8 11.a4 d5 12.b5 Bd7 13.Bg5 de4 14.Ne4 Bg4 15.h3 Bf5 16.Nfd2 h6 17.Nf6 Bf6 18.Bh6 Qd5 19.Re1+/– Bh4 20.g4 Be6 21.Nf3 Bf6 22.Re4 Bd7 23.Bg5 Bg5 24.Ng5 c6 25.c4 Qd6 26.d4 Qf6 27.de5+– Qg5 28.Qd7 Re5 29.Qb7 Rae8 30.Re5 Qe5 31.Rf1 cb5 32.ab5 Re7 33.Qa8 Kg7 34.Qd8 Re8 35.Qd2 Rh8 36.Re1 Qc7 37.Qc3 f6 38.g5 Qd6 39.c5 Qd8 40.c6 Qf8 41.c7 Kf7 42.Qf6 Kg8 1–0. marekt – NN, GameColony.com, 2002.

6.d3 a6 7.Bc6= Bc6 8.a4 d5 9.Nf3?? Bb4–+ 10.0–0 d4 11.Ne2 Bd6 12.c3 dc3 13.Bc3 Qe7 14.Ng5 Nh5 15.Bb2?? Qg5 16.g3 Bd7 17.d4 0–0–0 18.h4 Qg6 19.de5 Be7 20.Qc2 Bg4 21.f3 Bh3 22.Rac1 c6 23.Rf2 Nf4 24.Kh2? Ne2 25.Qe2 Be6 26.f4 Bg4 27.Qe3 h5 28.f5 Qh6 29.Qb3 Rd7 30.e6 fe6 31.fe6 Be6 32.Qb6 Bg4 33.Rfc2 Rf8 34.Bg7?? Qg7–+ 35.Rc6 Kb8 36.Rc7 Rd2 37.Kg1 Bc8 38.R7c3 Bh4 39.Qe3 Bg5 40.Qc5 Re2 41.Qd6 Ka8 42.Rc8+– Rc8 43.Rc8 Ka7 44.Qc5 b6 45.Rc7 Qc7 46.Qc7 Ka8 47.Qc8 Ka7 48.Qd7 Kb8 49.Qe8 Kc7 50.Qe5 Kc6 51.Qg5 Re1 52.Kf2 Rb1 53.Qd5 Kc7 54.e5 Rb2 55.Kf3 Rb4 56.e6 Ra4 57.Qd7 (57.Qd7 Kb8 58.Qa4+–) 1–0. aligarjon – unitedfan, ChessWorld.net, 2005.

6.Nf3 a6 7.Bc6= Bc6 8.d3 Be7 9.0–0 0–0 10.Re1 h6 11.Ne2 Qd7 12.c4 Nh7 13.Ng3 Rfe8 14.a4 b5 15.ab5 ab5= 16.cb5 Bb5 17.Nf5 Bf6 18.Qb3 Ng5= 19.Ng5 Bg5 20.Ra8 Ra8 21.Ra1 Ra1 22.Ba1 Kf8 23.Qd5 Bc6 24.Qa2 g6 25.Ng3 Bb5 26.Qa8 Kg7 27.Qd5 c6 28.Qb3 Qg4 29.d4 Bf4 30.de5 Be5 31.Be5= de5 32.h3 Qf4 33.Qd1 h5 34.Qc2 Qf6 35.Qd2 Qe6 36.Qg5 Kh7 37.Qd2 Qc4 38.f3 Qd4 39.Qd4= ed4 40.Kf2 d3 41.Ke3+= Kg7 42.e5+/– Kf8 43.Ne4 Ke7 44.Nc5 g5 45.g3 f5 46.ef6+– Kf6 47.Nd3 Kf5 48.Nc5 Bc4 49.Ne4 Bd5 50.Nf2 Bc4 51.g4 hg4 52.hg4 Ke5? 53.Nh3 Kf6 54.f4 gf4 55.Kf4 Bf1 56.Nf2 Ke6 57.g5 Bc4 58.Ne4 Ke7 59.Ke5 Ba2 60.Nd6 Bb3 61.Nf5 Kf7 62.Nd4 Ba4 63.Ne6 Ke7 64.g6 Bb3? 65.Nf4 Bc2 66.g7 Bb3 67.Nh5 Kf7 68.Kd6 Ba4 69.Nf4 Kg7 70.Ne6 Kf6 71.Nd8 Kf5 72.Nc6 Ke4 73.Kc5 Kd3 74.Ne5 Kc3 75.Nc4 Kb3 76.Nb6 Be8 77.b5 ˝–˝. DanielMena – yulio, ChessWorld.net, 2006.

6.Nf3 Nd4 7.Bd7+= Qd7 8.Nd4 ed4 9.Ne2 Ne4 10.Nd4 Be7 11.0–0 c5 12.bc5 dc5 13.Nf3 f6 14.Re1 Nd6 15.d4 Nf5 16.dc5 Qc6 17.Nd4 Qc5?? 18.Ne6 Qc6 19.Qg4 g6 20.Bf6!! Rg8 21.Re5?? Kf7?? 22.Be7+– Rae8 23.Ng5 Kg7 24.Re6 Qc3 25.Bf6 Qf6 26.Rf6 Kf6 27.Nh7 Kg7 28.Ng5 Re5 29.Qh3 Rge8 30.Qc3 Kg8 31.f4 Re3 32.Qc4 Kh8 33.g4 Nh6 34.f5! Kg7 35.Qc7 Kf6 36.Nh7# 1–0. ajmcroberts (1715) – imreallylousy (1895), net–chess.com, 2007.

4.Nc3 d5

5.a3 d4 6.Nce2 Ne4–/+ 7.d3 Nf6 8.Nf3 Bd6 9.c3 dc3 10.Nc3 0–0 11.g3 c5 12.bc5–/+ Bc5 13.Ne4 Bg4 14.Nc5 Bf3 15.Qf3 Qa5 16.Kd1 Qc5 17.Bg2 Nc6 18.Rc1 Qb5 19.Qe2 Nd4 20.Bd4 ed4 21.Qc2 Rfe8 22.Rb1 Qh5 23.f3 Nd5 24.Qb3 Rac8 25.Qb7 Qf5 26.Kd2 Re2!! 27.Ke2 Rc2 28.Kf1 Qd3 29.Kg1 Qe3 30.Kf1 Qf2 0–1. Damasio,Fabio – Korchut,Adam (2035), IECG, 2004.

5.d3? Bb4 6.ed5 Nd5 7.Qd2 Qe7 8.Nge2 Qc5 9.f3? Nc6–+ 10.Kd1 Nd4 11.Ne4?? Ne3 12.Kc1 Bd2 (12...Bd2 13.Kd2 Nf1 14.Ke1 Nc2 15.Kf1 Qb6–+) 0–1. Berndt – Mugler, corr, 1971.

5.ed5 Bb4 6.Bb5 Bd7 7.Bc4 c6 8.Nf3 Bg4 9.dc6 Nc6 10.h3 Bf3 11.Qf3 Qb6 12.Nd5 Nd5 13.Bd5 f6 14.Bc6 bc6 15.Rb1 Qa6 16.Be5 Bd2 17.Kd2 fe5 18.Qh5 Kd7 19.Qe5+– Rhg8?? 20.Rhd1 Kc8 21.Ke1 Qb6 22.Qf5 Kb8 23.Rb6 ab6 24.Qf4 Kc8 25.Qf7 Rh8 26.Rd6 Kb8 27.Rc6 Ra6 28.Qg7 Re8 29.Kd2 Rd8 30.Kc3 Ka8 31.Qh7 Re8 32.Qg6 Rf8 33.Rb6 Rb6 34.Qb6 Rc8 35.Kd4 Rc2 36.Qa5 Kb8 37.f4 Kb7 38.a4 Rf2 39.f5 Rc2 40.f6 Rf2 41.f7! Rf4 42.Ke5 Rf2 43.Qb5 Ka7 44.Qc5 Ka8 45.Qf2 Kb7 46.f8Q Kc7 47.Qa7 Kc6 48.Qe8# 1–0. Bestia02c – Freyr0960b, computer chess game, 2000.

5.ed5 Bb4 6.Bb5 Bd7 7.Qe2 =+.

5.ed5 Bb4 6.Bc4 0–0 7.Nge2 Nbd7–/+ 8.Bb3 Nc5 9.0–0 Nb3 10.ab3 Nd5 11.Nd5 Qd5 12.Nc3 Qd4 13.Ra2 Rd8 14.Nb5 Qf4 15.Nc7= Rd2 16.Qa1 Bd7 17.Na8?? Bc6–+ 18.Nc7 Qe4 19.f3 Qe2 (19...Qe2 20.Rf2 Qf2 21.Kh1 Qg2) 0–1. Tschoepe,Frank (1765) – Meier,Franz (1760), T15.11 ETC, 2004.

5.Nd5 Ne4 6.c4 c6 7.Nc3 Nf6 8.Qb3 Bd6 9.d3 Na6 10.a3 0–0 11.Nf3 Re8 12.Be2 Bf5 13.0–0 Nc7 14.Rfe1 h6 15.Bf1 Ne6 16.c5 Nd4 17.Nd4 ed4 18.cd6 Re1 19.Re1+= dc3 20.Qc3 Qd6 21.Qe5 Qe5= 22.Re5 Be6 23.h3 Re8 24.g3 Kf8 25.Bg2 Bd7 26.Re8 Be8 (26...Ne8 27.Bd4+=) ˝–˝. Steriev,Ljupce (2200) – Tomasevic,Sasa (2150), Yugoslavia ch e–mail, 1999.

5.Nd5 Ne4 6.Ne3 Nd7 7.Nd5 c6=+ 8.Nc3 Qb6 9.Ne4= Qb4 10.Nf6 gf6–/+ 11.Bc3 Qe4 12.Ne2 Nb6 13.d3 Qd5 14.Bb2 Be6–+ 15.Nc3 Bb4 16.a3 Ba5 17.Qd2 Qd7 18.0–0–0 Na4!! 19.Kb1 Bc3 20.Bc3 Qd5 21.Kc1 Qa2 22.Qh6 Qa3 23.Kd2 0–1. EXchess 3.11 (2220) – Fritz 6, 2002.

5.ed5 Nd5

6.Nd5 Qd5 7.Qf3 Qf3 8.Nf3 e4 9.Ng5+= Bb4 10.Bg7 Rg8= 11.Bf6 Rg6 12.Ne4 Bf5 13.Bd3 Be4? 14.Be4+– Rf6 15.Bb7 Re6 16.Kf1 Bd2 17.Ba8 Na6 18.Rd1 Bc3 19.Bd5 Rd6 20.Rd3 Bb4 21.c4 Nc5 22.Rf3 f6 23.Re3 Kd7 24.Rh3 c6? 25.Rh7 Kc8 26.Bf3 1–0. Wall,Bill – Elman,Dave, Microsoft Gaming Zone, 1999.

6.Nd5 Qd5 7.Qf3 Qf3 8.Nf3 f6 9.a3 Bg4 10.Be2 unclear. Kuhlmann – Smit, corr, 1987.

6.Ne4 Nb4 7.a3 N4c6 8.Bb5 Qd5 9.Qe2 Bf5 10.f3 Nd7–/+ 11.g4 Bg6 12.h4 f6 13.Nh3 Nd4 14.Bd4 Qd4 15.c3 Qb6 16.Rb1 c6 17.Bd3 Qc7 18.Nf4 Bf7 19.Ng2 Ba3 20.f4 0–0–0 21.Ba6 Nb6 22.0–0 ba6 23.Qa6–/+ Qb7 24.Qa3= Qd7 25.Nc5 Qc7+/– 26.Qa6 Kb8 27.Qa3 Rd2?? 28.Na6+– Kc8 29.Nc7 Kc7 30.Qa7 Kd6 31.Qf7 Nc4 32.Qc4 Ra8 33.fe5 fe5 34.Rb6 Rc8 35.Ne3 Ke7 36.Qf7 Kd6 37.Nc4 Kc5 38.Rc6! Rc6 39.Nd2 Kd6 40.Ne4# 1–0. Hernandez Romero,Juan – Garcia Martinez,Napoleon, Valladolid CC Reloj Justina (8), 1974.

6.Nf3 Bb4 7.Ne5 0–0 8.a3 Bc3 9.dc3=+ Re8 10.c4= Nb6 11.Be2 Qd1 12.Rd1=+ h6 13.0–0 Bf5 14.Rd2 N8d7 15.Nd7= Nd7 16.Rfd1 Nb6 17.c5 Na4 18.Bd4 b6? 19.Bb5+– Nc5 20.Be8 Re8 21.Bc5 bc5 22.Rd8 Rf8 23.Rf8 Kf8 24.Rd5 Bc2 25.Rc5 Be4 26.Rc7 a6 27.Ra7 Bd3 28.f3 Kg8 29.Kf2 Kh7 30.Rf7 Kg6 31.Rd7 Bb5 32.Rd6 Kf5 33.g4 Kg5 34.Kg3 Bc4 35.f4 1–0. Fedotova,Kristina – Prokhorova,Daria, Eskisehir EU fest–B Girls 3rd, 2004.

5.Nd5 Nd5

6.ed5 Bb4 7.Bc4 0–0 8.Be5? (better is 8.Qh5=) 8...Re8–+ 9.f4 (9.Qe2–+) 9...Re5! 10.fe5 Qh4 11.g3 Qc4 12.Nf3 Bg4 13.h3 Bf5 14.Rb1 Na6 (14...Na6 15.Kf2 Qa2–+ (15...Bc2?! 16.Rc1 Qc5 17.d4 Bd1 18.dc5 Bc5 19.Kg2–+); 14...Bc2?! 15.Rb4 Bd1 16.Rc4 Bf3 17.0–0 Bd5 18.Rc7–/+) 0–1. Law,Steve (1765) – Korchut,Adam (2090), TE.2004.S.01703, 2006.

6.ed5 Bb4 7.Be5 Qd5 8.Bg7+= Rg8 9.Qe2 Be6= 10.c3 Ba5 11.Bf6 Nd7=+ 12.Bh4?? Qc5?? 13.Nf3 Bc3?? 14.Rc1+– Qa5 15.dc3 Nc5 16.Qe3 Rg4 17.Ng5?? Rh4= 18.Ne6?? Ne6?? 19.g3 Ra4 20.Bh3= Qa6 21.Be6 Qe6 22.Qe6 fe6 23.Rc2 0–0–0 24.0–0 Rg8 ˝–˝. themonkey – DeepCreep, GameColony.com, 2002.

6.ed5 Qd5 7.a3 b5 8.Ne2 a6 9.Nc3 Qe6 10.Be2 Bd6 11.0–0 0–0 12.Bf3 c6 13.Ne4 Rd8 14.Re1 f6 15.d3 Ra7 16.Qe2 Re7 17.Rad1 Bc7 18.Nc5 Qd6 19.d4 e4 20.g3 f5 21.Bg2 Qf6 22.f3+= e3 23.f4+/– Bb6 24.Nd3 Be6? 25.d5!+– (25.d5 Qf8 26.de6 Re6 27.Kh1+–; 25.Qe3?! Rde8+/–) 1–0. Puls,Georg – Koch,Robert, corr DDR, 1971.

6.ed5 Qd5 7.b5 Bd6 8.Nf3 0–0 9.c4 Qe6 10.Be2 e4 11.Nd4 Qg6 12.g3 Be5 13.Rb1?? Qf6–+ 14.Bc3 Bd4 15.0–0 Bh3 16.Re1 Qf2 (17.Kh1 Bg2) 0–1. Kingeorge (2200) – zpawn (2270), ChessWorld.net, 2003.

6.ed5 Qd5 7.Qf3 Qf3 8.Nf3 e4 9.Ng5 Bb4 10.a3 Be7 11.Ne4 0–0 12.Bc4 Nd7 13.0–0 Re8 14.Rfe1 Ne5 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

6.ed5 Qd5 7.Qf3 Qf3 8.Nf3 f6 9.a3 a5 10.b5 Bf5 11.d4+= e4 12.Nd2 Bg6 13.Bc4 f5 14.0–0 Nd7 15.Rae1 0–0–0 16.f3 ef3 17.Rf3 Bd6 18.Be6 Rhe8 19.Nc4 Kb8 20.Nd6 cd6 21.d5 Re7 22.Bc3 Rc8 23.Bf5 Re1 24.Be1 Ne5 25.Bc8 Nf3+= 26.gf3 Kc8 27.Ba5 Bc2= 28.Kf2 Bb3 ˝–˝. Vicary,Lance (1865) – Lilja,Gunnar, corr ICCF, 1998.

4.Nc3 Bd7

5.Bc4 Nc6 6.b5 Na5 7.Be2 c6 8.bc6 Bc6 9.f3 Be7 10.Rb1 d5 11.ed5 Nd5 12.Ne4 Nf4 13.Be5= Ng2 14.Kf1 Nh4 15.Bg7= Rg8 16.Bc3 Rg6 17.Nh3 Be4 18.fe4+/– Bf6 19.Ba5 Qa5 20.Rb7 1–0. mtrc – moody, internet, 2002.

5.Nf3 Bg4 6.Be2 a6 7.0–0 Be7 8.d4 0–0 9.de5 de5 10.Ne5 Be2 11.Qe2 Qd4? (better is 11...Bb4 12.Rfd1 Qe7+=) 12.Na4?? (better is 12.Nd5 Qb2 13.Nc4+–) 12...Qe4?? (better is 12...Qb4 13.Qc4 Qc4 14.Nc4 b5 (14...Ne4?! 15.Rfe1 f5 16.f3+=) 15.Bf6 Bf6–+) 13.Qe4+= Ne4 14.Rfe1 Nf6 15.a3 Bd6 16.g3 Re8 17.c4 Be5 18.Re5 Re5 19.Be5 b5 20.cb5 ab5 21.Nc3 c6 22.Kg2 Nbd7 23.Bd4 h5 24.f3 g5 25.a4 ba4 26.Ra4 Ra4 27.Na4 Nd5 28.Nc5 Nc5 29.bc5 f5 30.h4 gh4 31.gh4 Kf7 32.Kg3 Ke6–/+ 33.Kf2 f4 34.Bb2 Nb4 35.Bc1?? Nd3–+ 36.Ke2 Nc1 37.Kd2 Nb3 38.Kc3 Nc5 39.Kd4 Kd6 40.Kc4 Ne6 41.Kd3 Kd5 42.Kc3 c5 43.Kd3 c4 44.Kc3 Nc5 45.Kd2 Kd4 46.Ke2 c3 47.Kd1 Kd3 48.Kc1 Nb3 49.Kd1 c2 (49...c2 50.Ke1 c1Q 51.Kf2 Nd2 52.Kg2 Qf1 53.Kh2 Nf3) 0–1. Neumann,Frank – Arango Marin,Sixto Gregorio, RN–2011–0–00412, 2011.

4.Nc3 Nbd7

5.a3 Be7 6.Nf3 0–0 7.Bc4 c6 8.Qe2 b5=+ 9.Bb3 a5 10.0–0 a4 11.Ba2 Nh5 12.d3 Nf4 13.Qe1 Nf6 14.Ne2 Ne2 15.Qe2 Bg4 16.h3 Bh5 17.c4 bc4 18.dc4 Qc7 19.Bb1 Rab8 20.Bd3 Nd7 21.b5 Nc5=+ 22.g4 Bg6–/+ 23.Rab1 cb5 24.cb5 Qb7 25.Nd2 Rfd8 26.Rfc1 Nd3–+ 27.Qd3 Bg5 28.Ba1 d5 29.Be5 de4 30.Qg3 Bd2 31.Rc7 Qd5 32.b6 e3 (32...e3 33.Rf7 Qf7 34.Bb8 Bb1 35.fe3 Qb3–+) 0–1. alaamattar (2135) – lopesq (2580), net–chess.com, 2006.

5.Bc4 Be7 6.Nf3 0–0 7.0–0 b6 8.Qe2 Bb7 9.a4 a5 10.b5 Nc5 11.Bd5 Bd5 12.ed5+= h6 13.d3 Nh7 14.d4 Nd7 15.Ne4 f5+= 16.Ned2 e4 17.Ne1 Bg5 18.Ra3 Qe7 19.g3 Bd2 20.Qd2= Ndf6 21.c4 Rae8 22.Ng2 Qf7 23.Nf4 Ng5 24.Qe2 Re7 25.Kg2 Rfe8 26.h4 Nf3=+ 27.Rh1 h5 28.Bc1 Nd4–/+ 29.Qd1 Nf3 30.Ne6 Qg6 31.Bg5 Re6 32.de6 Re6 33.Bf6 Rf6 34.Qd5 Kh7 35.Rf3 ef3–+ 36.Qf3 Qf7 37.Re1–/+ g6 38.Qd5=+ ˝–˝. Wolny,Christine – Knudten Wessel,Annegret, Schleswig Holstein–ch (Women), 1988.

4.Nc3 Be6

5.a3 a6 6.h3 Nc6 7.Nf3 Be7 8.Be2 0–0 9.d4 ed4 10.Nd4 Ne5 11.Ne6 fe6= 12.0–0 b5 13.f4 Nc4 14.Bc4+= bc4 15.Qe2 c6 16.Qc4 Qc8 17.Ne2 d5 18.ed5 ed5 19.Qd3 Ne4 20.Ng3+/– Ng3 21.Qg3 Qf5?? 22.Qg7 1–0. PoPer – gera, Live Game Caissa's Web, 2004.

5.a3 Be7 6.Be2 0–0 7.Nf3 Nbd7 8.0–0 Bg4 9.h3 (9.Ng5 Be2 10.Qe2 c6=). mic (2215) – coonas (2550), net–chess.com, 2007.

5.Bb5 c6=+ 6.Ba4 b5 7.Bb3 Bb3 8.ab3= Qb6 9.Nf3 Be7 10.0–0 0–0 11.d3 c5 12.Ba3 Nc6 13.bc5 dc5 14.Ne2 Rad8 15.Bb2 Nd4 16.Ned4 ed4= 17.c3 dc3 18.Bc3 c4 19.Rb1?? Rd3 20.Qc2 Ne4 21.bc4 Rfd8 22.Rb5=+ Rc3 23.Qe4= Qh6?? 24.Qe7+– g6 25.Qd8 Kg7 26.Qd4 Kg8 27.Rb8 Qf8 28.Rf8 Kf8 29.Qc3 h5 30.c5 Ke8 31.c6 Kd8 32.c7 Kc8 33.Re1 Kd7 34.c8Q Kd6 35.Qd4# (35.Q8c6#) 1–0. Moehring,Andreas – Khageh Hosseini,Farsin, Saarland–ch U18, 1992.

5.Bb5 Nbd7 6.Nf3 Be7 7.Ng5= h6 8.Ne6+= fe6 9.Bc4 d5 10.ed5+/– ed5 11.Nd5+– Nd5? 12.Bd5 Nf6 13.Bb7 Rb8 14.Bc6 Kf8 15.Be5 Bb4 16.0–0 Kg8 17.c3 Bd6 18.Bf6 Qf6 19.Qg4 Kh7 20.Be4+– g6 21.Qd7 Be7? 22.Rfe1 Rbd8 23.Bg6! Kg6 24.Qe7 Rd2?? 25.Qe4 Qf5 26.Qf5 Kf5 27.Re7 Rhd8 28.h3 Rc2 29.Rc7 Rdd2 30.Rf7 Ke6 31.Rf3 Ke5 32.Kh2 a5 33.a4 Rf2 34.Re1 Kd5 35.Rf2 Rf2 36.Kg3 Rc2 37.Re3 Ra2 38.Kf3 Ra4+= 39.g4 Ra1 40.h4 a4= 41.g5 hg5 42.hg5 a3 43.Re2 a2 44.Ke3?? Kc4–+ 45.g6 Kc3?? 46.g7= Rg1 47.Ra2 Rg7 48.Ra6 Re7 49.Kf4 Rf7 ˝–˝. golly1 – savage13, ChessWorld.net, 2007.

5.Bd3 Be7 6.Nh3 h6 7.b5 b6 8.Ne2 Nbd7 9.f4 Bh3 10.gh3 0–0 11.f5 Nc5–/+ 12.Ng3 Qd7 13.Rg1 Nd3–+ 14.cd3 Qb5 15.Nh5?? Nh5 16.Qh5 Qb2 17.Ke2 Bg5 18.Rad1 Rad8 19.h4 Bf4 20.f6 g5?? 21.Qh6 Qd2 22.Rd2 (22.Rd2 Bd2 23.Qg7) 1–0. bvboucher (2050) – nerob (2070), net–chess.com, 2005.

5.d4 Nc6?? 6.d5+– (6...Nb4 7.de6 fe6 8.Nf3+–) 1–0. market (2185) – CleverKing, GameColony.com, 2002.

5.d4 ed4 6.Qd4 Nc6 7.Bb5 Be7 8.Nd5 0–0 9.Qc3 Ne5 10.Qc7 Rc8?? 11.Ne7+– Kh8 12.Qd8 Rcd8 13.f4 Neg4 14.h3 Ne3 15.Bf6 gf6 16.Kd2 Ng2 17.f5 Bd7 18.Bd7 Rd7 19.Nd5 Kg7 20.Nf3 Rg8 21.Rag1 Kf8 22.Nf6 Re7 23.Ng8 Kg8 24.Rg2 Kf8 25.Kd3 Rd7 26.c4 b6 27.Rhg1 Ke7 28.Rg7 h5 29.Rh7 d5 30.cd5 Kf6 31.Rh5 a5 32.e5 Ke7 33.d6 Rd6 34.ed6 Kd6 35.Rh6 Kc7 36.Rg7 ab4 37.Rf7 (37.Rf7 Kd8 38.Rh8#) 1–0. marekt – PROMETEO, ChessWorld.net, 2002.

5.d4 ed4 6.Qd4 Nbd7 7.Bd3 g6 8.f4= c5 9.bc5 dc5 10.Qe3 c4 11.Be2 Bc5 12.Qd2 Qb6–/+ 13.Na4 Bf2 14.Kf1 Qe3 15.Qe3 Be3–/+ 16.f5 gf5 17.ef5 Bf5 18.Bc4 0–0 19.Bd3=+ Bg6 20.h4 Ng4 21.Rh3 Rfe8 22.Bb5 Rad8–/+ 23.h5 Bc2–+ 24.Rg3 Bf5 25.Nh3 Be6?? 26.Re1+= a6? 27.Be2 f5 28.Bg4 f4?? 29.Be6 Kf8 30.Nf4! (30.Nf4 Bf4 31.Ba3 Nc5 32.Bc5 Bd6 33.Rg8 Ke7 34.Bd5 Kf6 35.Rge8 Bc5 36.R1e6 Kf5 37.Be4 Kg5 38.Rd8 Be3 39.Rg8 Kh4 40.Bf3 Bg5 41.Re4 Kg3 42.Rg5 Kh2 43.Rh4#) 1–0. Mroz,Antoni – Partyka, corr Poland 8385, 1985.

5.d4 ed4 6.Qd4 Be7 7.Bc4 Nc6 8.Qd3?? (better is 8.Bb5–/+) 8...Ne5–+ 9.Qd4 (9.Bb5 c6 10.Qe2 cb5 11.Qb5 Bd7–+) 9...Nc4 10.Rb1 c5 11.bc5 dc5 (better is 11...Qa5!? 12.c6 bc6 13.Bc1 Ne4 14.Qe4 Qc3 15.Kf1–+) 12.Qd8 Rd8 13.Nge2 (13.Bc1 b6–+) 13...Nb2 14.Rb2 b6 15.0–0 0–0 16.Nb5 (16.Re1 Rfe8–+) 16...Ne4 17.Na7 Bc4 18.Nc6 Bf6 19.Nd8 (19.Rb6 Be2 20.Nd8 Bf1 21.Kf1 Rd8–+) 19...Bb2 20.Nc6 Be2 21.Ne7 (21.Rb1 Bf6 22.Rb6 Nc3–+) 21...Kh8 22.Re1 Nc3 (22...Rd8!? 23.Nf5–+) 23.Nd5 Nd5 24.Re2 g6 (better is 24...Bc3 25.a4–+) 25.c4 Bd4 26.cd5 Rd8 27.g3 Rd5 28.h4 (28.Kg2 Kg7–+) 28...c4 29.g4 (29.Kf1 c3 30.Rc2 Re5–+) 29...c3 30.a4 (30.Kg2–+) 30...Rc5 31.Rc2 Rc4 (better is 31...b5 32.ab5 Rb5 33.Kg2–+) 32.h5 (32.Kf1 Be5 33.f3 h5 34.gh5 gh5–+) 32...gh5 33.gh5 Kg7 (better is 33...Rb4 34.Rc1 Rb2 35.Kh1–+) 34.Kg2 Rb4 35.Kh3 (35.Kf3–+) 35...Rb2 36.Rb2 cb2 37.Kh4 b1Q 38.f4 Qg1 39.Kh3 (39.h6 Kh6 40.f5 Be5 41.a5 Qg3) 39...Bf2 40.h6 Kh6 41.a5 Qg3# 0–1. Sisior,Destiny – Boldoo,Erdenepurev (2200), World U16 Olympiad, 2015.

5.Be2 Be7 6.Nf3 0–0 7.0–0 Nbd7 8.d4 ed4 9.Nd4 Ne5 10.Ne6 fe6 11.f4 Nc6 12.a3 Nd7 13.Bg4 Rf6 14.Nb5 Rg6 15.Bh5 Rh6 16.f5 ef5 17.Qd5 Kh8= 18.Rf5 Nf6 19.Qf7 a6 20.Nd4 Ne5 21.Re5 de5 22.Ne6 Qg8=+ 23.Qg8 Rg8= 24.Bf7 Rc8=+ 25.Be5 Rf8?? 26.Nf8+– Bf8 27.Bc7 Ne4 28.Re1 Rf6 29.Bd5 Nd6 30.Bd6 Bd6 31.Re8 Rf8 32.Rf8 Bf8 33.c4 b6+/– 34.Kf2 g5 35.g4 Kg7 36.Ke3 a5 37.ba5 ba5 38.a4 Bd6 39.h3 Kf6 40.Kd4 h6 41.c5 Bc7 42.Be4 Ke6 43.Bf5 Kf6 44.Kd5 Ke7 45.Kc6 Kd8 46.Kb5 Ke7 47.Ka6 Kd8 48.Kb7 Bf4 49.c6 Bc7 50.Bd7 Bf4 51.Ka6 Bc7 52.Kb5 Ke7 53.Ka6 Kd6?? 54.Kb7+/– Bd8 55.Kc8 ˝–˝. fantom – yaunootz, internet, 2006.

5.Nge2 Nc6 6.b5 Ne7 7.d4= ed4 8.Nd4+= Qd7 9.Be2 d5 10.Ne6 Qe6 11.ed5 Ned5 12.0–0 Bc5 13.Nd5+/– Nd5 14.Bf3 Nf4?? 15.Re1+– Qe1 16.Qe1 Ne6 17.Bb7 Rb8 18.Bc6 Kf8 19.Qe5 Bd6 20.Qe3 a6 21.Qa7 Ke7 22.Re1 Rhc8 23.Bg7 Bc5 (23...Rb6 24.Bd4 Rb5 25.Bb5 ab5+–) 1–0. TriAngel – jcervant, ICC, 1999.

5.Nge2 d5 6.ed5 Nd5 7.a3 Nd7 8.Nd5 Bd5 9.Nc3 Bc6?? (better is 9...Be6=) 10.b5+– Bg2 11.Bg2 Rb8 12.0–0 Bd6 13.Qf3 c6 14.bc6 bc6 15.Rab1 Rc8 16.Rfe1 0–0 17.Ne4 Nb8 (17...Bc7+–) 18.Nd6 Qd6 19.Be5 (worse is 19.Re5 Qd2 20.Qg4 g6+–) 19...Qa3 (19...Qg6+–) 20.Qa3 (20.Qa3 Nd7 21.Bc3+–) 1–0. Kosinski,Bartosz – Ziemiecki,Dawid, XXVIII Memorial Mistrza Blaszczaka Poland, 1999.

5.Nf3 a5 6.b5 c6 7.Ng5 Be7 8.Ne6 fe6 9.d4 ed4 10.Qd4 c5 11.Qa4 b6? 12.Bc4+– Qd7 13.0–0–0 0–0? 14.Qb3+– Qb7 15.Be6 Kh8 16.f3 Nbd7 17.Nd5 Nd5 18.Bd5 Qc7 19.Ba8 Ra8 20.Qe6 Ne5 21.Be5 de5 22.Rd7 Bg5 23.Kb1 Qc8 24.Rhd1 1–0. NN – NN, internet, 2002.

5.Nf3 c6 6.a3 Nbd7 7.d4 ed4 8.Nd4+= Ne5 9.Ne6 fe6 10.Be2 Qe7 11.Qd4 Ned7 12.0–0+/– e5 13.Qe3 0–0–0? 14.Qa7+– g6 15.b5 Nb8 16.Na4 Kd7 17.bc6 Ke8 18.Qb7 Qb7 19.cb7 Rd7 20.Bb5 Ne4 21.Nb6 Nc5 22.Nd7 Ncd7 23.Rad1 (23.Rad1 Kd8 24.f4+–; 23.Rfd1 Be7+–) 1–0. themonkey – GopStop, GameColony.com, 2002.

5.Nf3 Nc6 6.a3 Bg4 7.Be2 Bf3 8.Bf3 g6 9.0–0 Bg7 10.Nd5 0–0 11.c3 Qd7 12.a4 Ne7 13.Nf6 Bf6 14.b5 c6 15.c4 c5 16.Bg4 Qd8 17.f4 Nc8 18.f5 Nb6 (18...a6 19.fg6 fg6 20.Be6 Kg7 21.Qg4+/–) 19.d3 (19.fg6 hg6 20.Qb3 Bg5+/–) 19...a5 20.Qf3 Rc8? (better is 20...Bg5+/–) 21.fg6+– fg6 22.Bc8 Qc8 23.Qg3 Qe6 24.Bc1 Bg7 (24...Nd7 25.Bd2+–) 25.Rf8 Bf8 26.Bd2 Bg7 27.Ba5 Nd7 28.Bd2 Nb6 29.Qh4 Nd7 (29...Bf6 30.Bg5 Kg7 31.Bf6 Qf6 32.Qf6 Kf6 33.a5+–) 30.a5 (better is 30.Qd8 Nf8 31.Rf1+–) 30...Nb8 (30...Bf6 31.Qg3 Qe8+–) 31.Qd8 Bf8 32.Qb8 (32.Qb8 g5 33.a6 ba6 34.ba6+–) 1–0. kupovgeorge (1790) – mekkelmania, gameknot.com, 2014.

5.f4 ef4 6.Nf3 d5–/+ 7.ed5 Nd5 8.b5 Bg4 9.Qe2= Be7 10.Nd5+= Qd5 11.Bg7 Bf3 12.gf3 Rg8 13.Qe5 Qe6 14.Qe6 fe6 15.Be5 Bd6 16.Bd6 cd6 17.d4 Nd7 18.Bd3 Nf6 19.c4 Rg2=+ 20.Be2 a6 21.ba6 Ra6 22.Kf1 Rg7 23.a4 Ra8 24.Kf2= e5 25.de5 de5=+ 26.Rhe1 Re7 27.Bd3 Nd7 28.a5 Nc5 29.Be4 Ne4 30.Re4 b6 31.a6 Kf7 32.a7 Kf6 33.Ra6 Rea7 34.Rb6 Kf5 35.Rb2 Ra3 36.Rbe2 R8a5–/+ 37.Rc2 Rc5 38.Kg2 Rca5 39.c5= Ra2 40.Ree2 Rc2 41.Rc2 Ra7 42.Kf2? Rc7 43.Ke2 Ke6 44.Kd3 Kd5 45.c6 Rc6–+ 46.Rc6? Kc6 47.Ke4 Kd6 48.h3 Ke6 49.h4 h5 50.Kd3 Kd5 51.Ke2 Kd4 52.Kd2 e4 53.fe4 Ke4 54.Ke2 f3 55.Kf1 Kf4 56.Kf2 Kg4 57.Kg1 Kh4 58.Kh1 Kg3 (58...Kg3 59.Kg1 h4 60.Kf1 h3 61.Ke1 f2 62.Ke2 h2 63.Kd3 f1Q 64.Kd4 h1Q 65.Kc5 Qf2 66.Kd6 Qf6 67.Kc5 Qhc6 68.Kb4 Qfc3#) 0–1. Fredenburgh – Barry, Rhode Island, 1962.

5.h3 d5 6.d4? Bb4–+ 7.Nf3 Ne4 8.Qd3 ed4 9.Qd4 f6?? 10.Qb4+– b6 11.Ne4 de4 12.Nd4 a5? 13.Ne6 Qd7?? 14.Qe4+– (14.Qe4 Ra7 15.Nc7 Kd8 16.Rd1 Rc7 17.Be2+–) 1–0. Andy HB – Stoot, ChessWorld.net, 2005.

5.Nf3 Nbd7

6.d4 c6 7.Bd3 Bg4 8.Be2 Qb6 9.a3 Bf3 10.Na4?? Be2–+ 11.Qe2 Qc7 12.0–0 b5 13.Nc3 ed4 14.Nd1 Qb6 15.Rc1 Ne5 16.f4 d3 17.Qf2 dc2 18.Rc2 Nc4 19.Bd4 c5 20.Bf6 gf6 21.bc5 dc5 22.Rc3 Rd8 23.Ne3 Ne3 24.Qe3 c4 25.Qb6 ab6 26.Re1 Bc5 27.Kh1 Ra8 28.g4 b4 29.Rc4 ba3 30.e5 fe5 31.Re5 Kf8 32.Rc1 a2 33.Rec5 bc5 34.Ra1 Kg7 35.Kg2 0–1. dugmak – janbs, ChessWorld.net, 2004.

6.d4 Be7 7.Bd3 0–0 8.h3 Nb6 9.de5 de5 10.Ne5 (10.a3 a5 11.b5 Qd6=) 10...Bb4 (10...Qd4!? 11.Nf3 Qb4–/+) 11.0–0+= Bd6 12.Nb5 Bc5 13.Qe2 (13.Nf3 c6 14.Nbd4 Qe7=) 13...a6 14.Nc3 Nbd7 15.Na4 Bd6 16.Nd7 Bd7 (worse is 16...Nd7 17.e5 Qh4 18.ed6 Qa4 19.dc7+/–) 17.e5 Re8 (17...Ba4 18.ed6 Re8 19.Bf6 Qf6 20.Qh5=) 18.Bc4? (18.Rfe1 Ba4 19.Qd2 Be5 20.Re5 Bb5+=) 18...Be5?? (better is 18...Ba4 19.Bf7 Kf7 20.Qc4 Re6 21.ef6 Bb5–+) 19.Be5+= Ba4 20.Bf7?? Kf7–+ 21.Qc4 Qd5 22.Qa4 Re5 23.Rad1 Qb5 24.Qb5 ab5 25.f4 Re2 26.g4 Ra2 27.Rf2 Rf2 28.Kf2 Rc2 29.Kf1 b4 30.f5 b3 31.g5 Ne8 32.Rd7 Kf8 33.g6 hg6 34.fg6 Nd6 35.Rd8 Ke7 36.Rg8 b2 37.Rg7 Kf6 38.Rf7 Nf7 39.gf7 b1Q 0–1. Saar,Christian – Gustmann,Maximilian, GER–chT WK U18 4th, 2008.

6.d4 Be7 7.Be2 c6 8.0–0 0–0 9.a3 Re8 10.h3 Qc7 11.d5 cd5 12.ed5 Bf5 13.Rc1 Nb6 14.Nb5 Qd7 15.c4 a6 16.Nc3 Rac8 17.Na2 Na4=+ 18.Ba1 Rc7 19.c5 dc5 20.Ne5 Qe6?? 21.de6+– Be6 22.Qa4 Ba2 23.Rfe1 Bd6 24.Nf3 Rce7 25.Qc2 Be6 26.bc5 Bf4 27.Rcd1 Rc7 28.Bd3 Rec8 29.Bf6 gf6 30.Bh7 Kf8 31.Qb2 Kg7 32.Qd4 Bh6 33.Be4 Rc5 34.Bb7 R8c7 35.Ba6 Rd5 36.Qb6 Rd1 37.Qc7 (37.Qc7 Re1 38.Ne1+–) 1–0. Berrio,Ana – Villa,Olivia, ATL–ch sf Barranquilla, 2001.

6.Be2 Be7 7.0–0 0–0 8.a3 c6 9.d4 a5 10.d5 cd5 11.ed5 Bf5 12.Nh4 Bg6 13.Ng6 fg6 14.b5 Nc5 15.a4 Nfe4 16.Ne4 Rc8?? 17.Nc5+– Rc5 18.c4 b6 19.Rc1 Bg5 20.Rc2 e4 21.Qd4 Bf6 22.Qe4 Bb2 23.Rb2 Qf6 24.Rc2 Rc7 25.Bg4 Re7 26.Be6 Kh8 27.Rd1 Ree8 28.Qd4 Qf5 29.Bf5 (29…gf5 30.Qb6+–) 1–0. HFlew – jpv, playchess.de, 2003.

6.Be2 h6 7.0–0 Be7 8.d4 c6 9.a3 Nb6 10.de5+/– de5 11.Ne5 Qc7+/= 12.f4 Bd6 13.Nd3+/– Be7 14.Qe1 0–0 15.Qg3 Qc8? 16.e5 Nh7 17.Ne4 Nc4 18.Bc3 Bf5 19.Ndc5 Nb6 20.Bd3 Nd5 21.Bb2 b6 22.Nb3 f6? 23.c4 Nc7 24.Nd4 Bd7 25.Nd6 Bd6 26.ed6 Ne8 27.c5 f5 28.Bc4 Kh8 29.Rae1 Nhf6 30.Re7 Rb8 31.Ne6 Be6 32.Be6 Qd8 33.Bf6 Rf6 34.Bd7 Rf8 35.Be8 Qe7 36.de7 Rfe8 37.Re1+– 1–0. Velasco Valentin,Leopoldo – Vacas Ortega,Damaso, Valladolid CC Regalado (1), 1982.

5.Nf3 Be7

6.d4 0–0 7.d5 Bg4 8.h3 Bd7 9.Bd3 c6 10.0–0 cd5 11.ed5 Qc8 12.b5 Bh3? (better is 12...Be8!?=) 13.gh3+/– Qh3 14.Nh2 h5 15.Qf3 Qf3 16.Nf3 Nbd7 17.a4 Nc5 18.Rfe1 g6 19.Bf1 Kg7 20.Nd2 Rac8 21.Nc4 g5 22.b6 a6 23.f3 Nfd7 24.Re2 f5 Black intends g4 25.a5 Kg6 26.Rd1 g4 27.f4 Ne4 (27...ef4 28.Re7 Pinning (28.Re7 Deflection)) 28.Re4+/– (28.Ne4?! Rc4 29.Nd6 Bd6 30.fe5 Rb4+=) 28...fe4 29.Ne4 ef4 30.Ned6 Bd6 31.Nd6 Rb8? (31...Kg5 32.c4 Rce8+–) 32.Re1 h4 (32...Kg5+–) 33.Re7 Nf6 34.Bd3 (34.Rb7 Rb7 35.Nb7 Nd5 36.Bd3 Kh5+=) 34...Kh5 35.Re5 Kh6 36.Re6 Kg7 37.Ne4 (37.Ne4 Rbd8 38.Re7 Kg8 39.Bf6+–) 1–0. condoru (2020) – nizef (1835), gameknot.com, 2015.

6.d4 ed4 7.Nd4 0–0 8.Ne6 fe6 9.Bc4 d5 (9...Qc8!?+/–) 10.ed5+– ed5 11.Nd5 Kh8 12.0–0 Nd5 (12...Nc6 13.Ne7 Qe7 14.b5+–) 13.Bd5+– c6 14.Be6 Bb4?? (better is 14...Na6 15.Qg4 Bf6+–) 15.Qg4 Qe7 16.Rad1 b6 (16...Ba3 17.Be5 Bc5+–) 17.Rd3 a5 (17...Rf6 18.Bf6 Qf6 19.Qb4 Na6+–) 18.Rh3 Qe8 (18...Rf6 19.Rd1 Na6+– (19...Re6?? 20.Rd8 Qf8 21.Qg7)) 19.Bg7# (19.Qg7#) 1–0. psychobishop (1705) – alex_champ, gameknot.com, 2015.

6.d4 ed4 7.Nd4 Nc6 8.Ne6 fe6 9.b5 Ne5 10.f4 Nf7 11.Bc4 Qd7 12.0–0 0–0 13.a4 c6 14.bc6 bc6= 15.e5 de5 16.Qd7+= Nd7 17.Be6 Nc5 18.Bf7+/– Rf7 19.fe5 Ne6 20.Rf7 Kf7 21.Rf1 Kg8 22.Ne4 Rf8 23.Rf8 Bf8 24.Kf2 Kf7 25.Ke3 Nc5? 26.Bd4 Ne4 27.Ke4 c5 28.Be3 Ke6 29.h4 g6 30.g4 a6 31.c4 Be7 32.h5 gh5 33.gh5 Bf8 34.h6 Be7 35.a5 Bf8 36.Bg5 Kd7 37.Kd5 Be7 38.Be7 Ke7 39.Kc5 Ke6 40.Kb6 Ke5 41.Ka6 Kd6 42.Kb6 (42.Kb6 Ke5 43.a6+–) 1–0. themonkey – NN, GameColony.com, 2002.

6.d4 Nbd7 7.Be2 h6 8.d5 Bg4 9.Nd2 Be2= 10.Ne2 0–0 11.0–0 Rb8 12.Ng3 c6 13.c4 Nb6 14.a4 Re8 15.a5+/– Nbd7 16.Qe2 Qc7 17.Nf5 cd5 18.ed5 a6 19.Ra3 b6 20.Rg3+– Bf8 21.Nh6 Kh8 22.Nf7 Kg8 23.ab6 Nb6 24.Nh6 Kh8 25.Ng4 Be7 26.Ra1 Ra8 27.Nf6 Bf6 28.Qh5 Kg8 29.Ne4 Rf8 30.Rh3 Nc4 31.Rc1 Rac8 32.Rc4! Qc4 33.Qh7 Kf7 34.Nd6 Ke7 35.Nc4 Rc4 36.Qf5 e4 37.Qe6 (37.Qe6 Kd8 38.d6 Bb2 39.Qc4+–) 1–0. Beekes,Noud – Agrelo Alvarez,Gonzalo, SL–2006–0–00041, 2006.

6.Be2 0–0 7.a3 (7.0–0 Nc6=) 7...Nbd7 (7...Nc6 8.d4 ed4 9.Nd4 Nd4 10.Qd4=) 8.d4 (8.0–0 c5=) 8...Bg4 (8...a5 9.0–0=) 9.d5 (9.0–0 Re8=) 9...a5 10.h3 Bf3 (10...Bh5 11.0–0=) 11.Bf3 Nb6 (11...c6 12.b5=) 12.Qe2 (12.b5 c6=) 12...ab4 13.ab4 Ra1 14.Ba1 Qa8 (14...Qa8 15.0–0 c6+=; better is 14...c6=) 15.0–0 Qa3 16.Rb1 c6 17.Qd3 Ra8 18.dc6 bc6 19.b5 c5 20.Nd5 Nfd5 21.Qa3 Ra3 22.ed5 Bg5 23.Bb2 Ra4 24.Bc1 Bc1 25.Rc1 Rb4 26.Be2 c4 27.Ra1 Rb5 28.Bc4 Rc5 29.Bb3 Kf8 30.Ra6 Rb5 31.f3 Ke7 32.g4 Nd5 33.Kg2 Nf4 34.Kg3 Rb7 35.h4 Ne2 36.Kf2 Nd4 37.Ra3 f5 38.gf5 Nf5 39.h5 Rc7 40.Ra1 Kf6 41.Ra6 Kg5 42.Ke2 Kh5 43.Kd3 Kg5 44.Bd5 Rc5 45.c4 h5 46.Be6 h4 47.Bf5 Kf5 48.Rd6 g5 49.Rd8 Rc6 50.Rf8 Kg6 51.Rb8 Kf5 52.Rf8 Rf6 53.Rh8 Kf4 54.Ke2 e4 55.fe4 Ke4 56.c5 Kd5 57.Ke3 Kc5 58.Rg8 Re6 59.Kf3 Re5 60.Kg4 Kd4 61.Rf8 Ke3 62.Rf1 Ke2 63.Rh1 Kf2 64.Rh2 Kg1 65.Ra2 Re4 66.Kf3 Rf4 67.Ke3 Rf5 68.Ra1 Kg2 69.Ra2 Kg3 70.Ra1 h3 71.Rg1 Kh4 72.Ke2 Rf8 73.Ke3 g4 74.Rh1 g3 0–1. Zanger,Konrad – Kroener,Otto, Dresden, 2001.

6.Ng5 Bg4 7.Nf3 (7.Be2 Be2 8.Qe2 Nc6=) 7...Nbd7 (7...Nc6 8.a3+=) 8.Be2 0–0 9.0–0 a5 10.b5 Nc5 11.d3 h6 12.Nd2 (12.h3 Bf3 13.Bf3 Ne6=) 12...Bd7 13.a4 c6 14.f4 (14.Nc4 cb5 15.ab5 Ne6=) 14...ef4 (14...Re8 15.fe5 de5 16.Kh1+=) 15.Rf4 Ne6 16.Rf2 Nd4 17.Nf3 Ne2 18.Qe2 Ng4 19.Rff1 Qb6 20.d4 (20.Kh1 Rfe8+= (worse is 20...cb5 21.Nd5 Qd8 22.ab5+=)) 20...Rac8 (20...Ne5 21.Rfd1+=) 21.Kh1 (21.Rab1 Ne5 22.bc6 bc6=) 21...Rfe8+= 22.Nd1?? (better is 22.bc6 Qc6 23.Qd2+=) 22...cb5–+ 23.h3 Nf6 24.Rb1 (24.e5 Nh5 25.Kh2 ba4–+) 24...b4 (24...ba4 25.Nc3–+) 25.Ra1 (25.e5 de5 26.Ne5 Ba4–+) 25...Qc6 26.Ne3 Ne4 27.Kh2 Nf6 28.Qd3 (28.Nd2 Bd8 29.Qf2 d5–+) 28...Nd5 29.Ng4 (29.Nd5 Qd5 30.Qd2–+) 29...Qc2 (29...Qc2 30.Qc2 Rc2–+) 0–1. Nyikos,Laszlo – Rehder,Frank (1750), 6th Berlin–ch Seniors, 2010.

5.Nf3 h6

6.d4 d5 7.de5 Ne4 8.a3 =.

6.d4 d5 7.de5 Ne4 8.Ne4 de4 9.Nd4 Bb4 10.c3 =.

6.d4 Nbd7 7.Be2 Be7 8.d5 Bg4 9.h3 Bh5 10.0–0 c6 11.b5 c5 12.a4 a6 13.ba6 ba6 14.Rb1 Nb6 15.Qd3 0–0 16.Qe3 Qc7 17.Bc1 Nh7 18.Bd2 Nd7 19.Ne5+/– Be2 20.Nd7 Bf1 21.Nf8 Kf8 22.Kf1+– Bg5 23.f4 Bf6 24.Ne2 g5 25.fg5 Bg5 26.Qd3 f6 27.Nf4 Bf4 28.Bf4 Ng5 29.h4 Nf7 30.Qe3 h5 31.Kg1 Ke7 32.Qf3 Rh8 33.Qh3 Kf8 34.Qe6 Qe7 35.Rb8 Nd8 36.Bd6 (36.Bd6 Qd6 37.Qd6 Kf7 38.Ra8 Kg7 39.Ra7 Nf7 40.Qg3 Kh7 41.Rf7 Kh6 42.Qg7#) 1–0. marus1 – CONTROL, internet, 2001.

6.d4 ed4

7.Nd4+= Bd7 8.Nd5 Nc6 9.Nc6+/– Bc6 10.Nf6 gf6 11.Qf3 Be7 (11...Bg7 12.Bd3+/–) 12.b5 Bd7 13.Bc4 Be6 14.Bd5 Bd5 15.ed5 Rg8 16.0–0 Qd7 17.Bf6 0–0–0 18.Bd4 Rg6 19.Qf7+– Rdg8 20.g3 h5 21.Rae1 Bd8 22.Qd7 Kd7 23.Re2 h4 24.Ba7 b6 25.a3 Kc8 26.Re4 Kb7 27.Ra4 Bf6 28.Re1 Ra8 29.Re6+– Ra7 30.Rf4 Be5 31.Rg6 Bf4 32.gf4 Ra3 33.f5 h3 34.f3 Rf3 35.f6 Rf5 36.c4 Rf3 37.Rh6 Rf4 38.Rh3 Rf6 39.Ra3 Rf4 40.Ra4 Kc8 41.Kg2 Kd7 42.Kg3 Rf5 43.h4 Ke8 44.Ra8 Ke7 45.Rg8 Rf7 46.h5 Kf6 47.Kf4 Rh7 48.Rg6 Kf7 49.Kg5 Rh8 50.Rf6 Kg7 51.h6 Kh7 52.Rf7 Kg8 53.Rc7 Rh7 54.Rh7 1–0. kamret (2160) – PAVEMENT10 (1780), GameColony.com, 2003.

7.Nd4+= Bd7 8.Nd5 Nd5 9.ed5 Be7 10.Bd3 Bf6 11.0–0 0–0 12.Qf3 b6? 13.Qe4+– g6 14.Ne6! Bb2? 15.Nd8 Rd8 16.Rae1 Bf6 17.Qc4 Rc8 18.Re2 a5 19.b5 a4 20.Rfe1 Ra5 21.Qb4 Kg7 22.a3 h5 23.c3 Rf8 24.Re3 Bg5 25.f4 Bf6 26.f5 g5 27.Rh3 Rh8 28.Kh1 Be8 29.Rhe3 Bd7 30.Qb2 h4 31.Qb4 Rc8 32.Kg1 Rf8 33.h3 Rh8 34.R3e2 Rc8 35.c4 Ra8 36.Qd2 Rh8 37.Kh1 Rc8 38.Kh2 Rd8 39.Bc2 Rh8 40.Re3 Rc8 41.Qd1 Rh8 42.Kh1 Rf8 43.Qh5 Rh8 44.Qg4 Kh6 45.Bd3 Kg7 46.Kg1 Rd8 47.R1e2 Rf8 48.Re4 Rd8 49.Qh5 Rh8 50.Qf3 Kh6 51.Qg4 Kg7 52.Kh2 Rd8 53.R2e3 Rf8 54.Kg1 Rh8 55.Qf3 Rf8 56.Be2 Rh8 57.Qg4 Rf8 58.Bf3 Rd8 +–. market (2215) – serginho2 (1950), GameColony.com, 2002.

7.Nd4+= Bd7 8.Nd5 Ne4? 9.Qe2 Be7 10.Qe4 +–.

7.Nd4+= Bd7 8.Nd5 Be7 9.Bd3 +=.

7.Nd4+= Qe7 8.Qe2 +=.

7.Nd4+= Bg4 8.f3 Bh5 (8...Bd7 9.a3+=) 9.Bc4 (9.a3 Nbd7+/–) 9...Nbd7 10.Qe2 Nb6 (10...c6 11.Rd1+=) 11.Bb3 (11.Nd5 Rg8+/–) 11...Bg6 12.0–0–0 Be7 (12...Qe7 13.Rhe1+/–) 13.e5+/– Nh5 14.ed6 cd6 15.Rhe1 Kf8 16.g3 (16.Qb5 Rc8+/–) 16...a6 (16...d5 17.Nd5 Nd5 18.Nf5 Bb4 19.Rd5+/–) 17.f4 Nf6 18.f5 (18.g4 d5 19.f5 Bh7+/–) 18...Bh5+= 19.Nf3 Qc7 20.h3 Bf3 21.Qf3 Rc8 22.Re2 (22.Ne4 Qc6+/–) 22...Nc4 (22...d5!?+/–) 23.Bc4+– Qc4 24.Qb7 Rc7 25.Qa8 Rc8 26.Qa7 Rc7 27.Qd4 Qd4 28.Rd4 Nh5 (28...h5 29.b5 ab5 30.Nb5+–) 29.g4 (29.Nd5 Bg5 30.Kd1 Rc8+–) 29...Nf6 (29...Bg5 30.Kb1 Nf4 31.Re1+–) 30.Nd5 Nd5 31.Rd5 f6 (31...h5 32.f6 Bf6 33.Bf6 gf6 34.Rd6 hg4 35.hg4 Rc4+–) 32.Ra5 Kf7 33.Ra6 Rhc8 (33...h5 34.b5+–) 34.b5 Rb8 (34...d5 35.a4+–) 35.a4 Rbb7 36.Ba3 Ra7 37.Ra7 Ra7 38.Re4 Bf8 39.b6 Ra8 40.Re6 (40.a5 d5 41.Ra4 Ba3 42.Ra3 Ke8+–) 40...d5 41.Bf8 Kf8 42.b7 Rb8 43.Rb6 Ke7 44.a5 Kd7 45.a6 Kc7 46.a7 (better is 46.Rb3 d4 47.a7 Rb7 48.a8Q Rb3 49.cb3+–) 46...Rb7 47.a8Q (better is 47.Ra6 Rb8 48.ab8R Kb8+–) 47...Rb6 (47...Kb6 48.Qa3 Rd7 49.Qe3 Kc6 50.Qe6 Kc7 51.Kd2+–) 48.Qd5 1–0. Krstev,Emil (2155) – Golubovic,Tomislav (1855), Skopje MKD, 4th Karpos Open, 2014.

4.Nc3 Be7

5.a3 0–0 6.Bc4 c6 7.Nf3 b5 8.Bb3 Bg4 9.h3 Bh5 10.g4 (10.a4 Na6=) 10...Bg6 11.Qe2 a5 12.d4 Qd7?? (better is 12...Nbd7+=) 13.Nh4?? (better is 13.de5 de5 14.Ne5+–) 13...ed4–+ 14.Ng6 dc3 (better is 14...hg6!? 15.Nd1 c5 16.bc5 dc5–+) 15.Ne7–/+ Qe7 16.Bc3 Qe4 17.Qe4 (17.f3 Qf4 18.0–0 a4+=) 17...Ne4 18.Bb2 d5 (better is 18...ab4!? 19.ab4 Ra1 20.Ba1 Re8–/+) 19.f3+= Ng5 20.Kf2 ab4 21.ab4 Ra1 22.Ba1 Nd7 23.h4 Ne6 24.Rd1 h6 25.c4 (25.Kg3 f5+=) 25...bc4 26.Bc4 f5 (26...Ra8!? 27.Bf1 Nb6+=) 27.gf5 (27.Rd5 Nb6 28.Rd4 Nc4 29.Rc4 fg4 30.Rg4 Kf7=) 27...Rf5 28.Bd3 Rf4 29.Re1 (29.b5!? c5 30.Re1=) 29...Ndf8–/+ 30.h5 (30.Rc1 Rh4 31.Rc6 Rb4–/+) 30...Rb4 31.Bf5 Ng5 (31...Nf4 32.Re8 d4 33.Re4 Nd3 34.Kg3–/+) 32.Be5 Rb3 33.f4 Nf7 (33...Nge6 34.Ra1 Rb7 35.Ke3–/+) 34.Ba1 (34.Bc7 Rb2 35.Kf3 Rb7+=) 34...Ra3 (34...Nd6!? 35.Bc2 Ra3–/+) 35.Rg1–/+ Ra2 (35...g5!? 36.fg5 Ng5+=) 36.Kf3= Ra3 37.Ke2 Ra2 38.Kd3 Ra1 (better is 38...g5 39.hg6 Nd6=) 39.Ra1+/– Nd6 40.Bh3 (40.Bg6!? Ng6 41.hg6+/–) 40...Ne4+= 41.Ke3 Kf7 (41...Nf6 42.Ra8 Kf7 43.Ra7 Kg8 44.Rc7+=) 42.Ra6 c5 (42...Nf6 43.Rc6 Nh5 44.Bg4+=) 43.Ra7 (43.Rc6 Ke8 44.Rc8 Ke7 45.Rc7 Kd6 46.Rg7 c4+/–) 43...Kg8 (43...Kf6!?+=) 44.Ra8 Kf7 ˝–˝. Nyikos,Laszlo – Bauer,Stefan, 6th Berlin–ch Seniors, 2010.

5.a3 0–0 6.Nf3 c6 7.d4 Bg4 8.Be2 Bf3 9.Bf3 Qb6 10.d5 cd5 11.Nd5+= Nd5 12.Qd5 Nd7 13.0–0 Nf6 14.Qd2 Rac8 15.Rac1 Rfd8 16.c4+= a6 17.Rfd1 Rc7? 18.Qe2?? g6 19.Rd3 Rdc8+= 20.Rdc3 Nd7 21.Bg4+/– h5 22.Bd7 Rd7 23.Rd1 Qd8 24.Rg3 Bh4 25.Rgd3 Rcc7 26.Rd5 Qf6? 27.c5 Rc6 28.cd6 Rcd6 29.g3 Bg5 30.Be5 Rd5 31.Rd5 Qe6 32.Qd3 Rd5 33.Qd5 Qd5 34.f4?? Qd1 35.Kf2 Be7 36.Bb8 Qa4 37.e5 Qa3 0–1. tightfist – ivos (1920), net–chess.com, 2006.

5.a3 0–0 6.Nf3 Re8 7.Be2 Nc6 8.0–0 Nd4 9.Nd4 ed4 10.Nd5 Nd5 11.ed5 Bf6 12.c3 dc3 13.Bc3 a6 14.a4 Bf5=+ 15.Bf6 Qf6–/+ 16.Rc1 Rac8 17.b5=+ ab5 18.Bb5 Re7 19.Re1 Re1 20.Qe1 h6 21.Rc3 Qd4=+ 22.Qe3 Qe3 23.Re3 f6 24.Re8 Re8–/+ 25.Be8 Be4 26.f3 Bd5 27.Kf2 b6 28.Bg6 Kf8 29.Be4 Bb3 30.Bc6 Ke7 31.Ke3 Ke6 32.h4 d5 33.g3 g5 34.hg5 hg5 35.f4 gf4 36.gf4 Kd6 37.Be8 c6 38.Kd3 Ba4 39.Kc3 d4! 40.Kd4 Bd1 41.d3 f5 42.Kc3 Bf3 43.Bg6 Bg4 44.Kd4 b5 45.Bh7 c5–+ 46.Kc3 b4 47.Kb3 Kd5 48.Kc2 Kd4 49.Kd2 b3 0–1. Neumann,Frank (1650) – Dvorak,Erhard (1850), remoteschach.de, 2007.

5.a3 Be6 6.Nf3 h6 7.d4 ed4 8.Nd4+= Bd7 9.Bd3 Nc6 10.Nd5 Ne5 11.Ne7 Qe7 12.0–0 0–0 13.Re1 a6 14.f4 Nd3= 15.cd3 Rfc8 16.Nf3 Bg4 17.h3 Bf3 18.Qf3+= Ne8 19.e5 c6 20.Qg3 de5 21.Re5 Qf8 22.Rh5 Kh7 23.Re1 f6 24.Rc5 Nc7 25.f5 Qf7 26.Qd6 Re8 27.Rcc1 (27.Re4 Nd5=) ˝–˝. Bender,Wolfgang – John,Joachim, Saarland–ch Germany, 1992.

5.a4 0–0 6.b5 b6 7.Bc4 Bb7 8.Bd5 c6 9.bc6 Nc6 10.Nb5? Qd7 11.d4 Nd4 12.Bd4 Bd5 13.ed5–/+ ed4 14.Nd4 Nd5 15.Nge2 Qb7 16.0–0 Rac8 17.a5 Bf6 18.Qd3 Nb4 19.a6 Qc7 20.Qb5 Qc5–+ 21.Ra4 Rfe8?? 22.Qc5?? dc5–+ 23.c3 cd4 24.cb4 Re2 25.g3 d3 26.Rd1 d2 27.Kf1 Rce8 28.Rd2 Rd2 29.Ra3 Bd4 30.Rf3 Rb2 31.h4 Rb4 32.Kg2 g6 33.Kh3 Rb2 34.Rf4 Bf2 (34...Bf2 35.h5 Re3 36.Rf6 Rg3 37.Kh2 Be1 38.Rf2 Bf2 39.hg6 Rb4 40.gh7 Kh7 41.Kh1 Rh4#) 0–1. Meybohm,Dirk – Bornemann, 1984.

5.b5 0–0 6.Nf3 a6 7.Bd3 Bd7 8.a4= c6 9.0–0 ab5 10.ab5 Ra1 11.Ba1 cb5 12.Qb1 Qa5 13.Nb5 Bb5 14.Qb5 Qb5 15.Bb5 Ne4 16.Re1 Ng5 17.Nd4 Bf6 18.Nf5 Rd8 19.d4 Nc6 20.d5 Na7 21.Bd3+= h5 22.f4 ef4 23.Bf6+– gf6 24.Re7 Nc8 25.Rb7 Rf8 26.h4 Nh7 27.Be2 Re8 28.Bh5 Re5 29.Bf7 Kh8 30.Be6 Nf8 31.Bc8 Rd5 32.Rf7 Nh7 33.Rd7 Rf5 34.Rd8 Nf8 35.Bf5 Kg8 36.h5 Kg7 37.h6! Kh6 38.Rf8 Kh5 39.Bd3 Kg4 40.c4 f5 41.Rf5 Kh4 42.Rf4 Kg5 43.Rf5 Kg6 44.g4 Kg7 45.g5 Kg6 46.Rd5 Kf7 47.c5 dc5 48.g6 Ke6+– 49.Bc4 Kf6 50.g7 Kg7 51.Rc5 Kf6 52.Kf2 Ke7 53.Ke3 Kd7 54.Ke4 Kd6 55.Kd4 Ke7 56.Ke5 Kd7 57.Bd5 Ke8 58.Kd6 Kf8 59.Rc7 Ke8 60.Rc8# 1–0. Betsy516 – Sjeng90, computer chess game, 2001.

5.b5 Be6 6.d4 ed4 7.Qd4 c5 8.Qd2 0–0 9.f4 Kh8 10.f5 Bc8 11.Nf3 Nbd7 12.Rd1 Re8 13.Bc4 Kg8 14.0–0+= Bf8 15.a4 Nb6 16.Ba2 Ne4 17.Ne4+– Re4 18.Bf7! Kh8 19.Ng5 Rg4 20.f6 h6 21.fg7 Bg7 22.Bg7 Kg7 23.Qc3 Rd4 24.Rd4 cd4 25.Qd4 Kf8 26.Be6 Ke8 27.Qh8 Ke7 28.Rf7# 1–0. Henderson,C – Forrest,K, Hollywood, 1956.

5.Bc4 c6 6.Nf3 0–0 7.0–0 b5 8.Bb3 Bb7 9.d3 Nbd7 10.Ne2 a5 11.c3 a4 12.Bc2 Rc8 13.a3 d5 14.Ng3 Re8 15.d4 de4 16.Ne4= ed4 17.cd4 Nb6 18.Nc5 Rc7 19.Ne5 Bc8 20.Na6?? Ba6–+ 21.Bh7 Kh7 22.Nf7 Qd5 23.Qd3 Kg8 24.Nh6 gh6 25.Qg3 Kh8 26.Qc7 Nc4 27.Bc1 Qd4 28.Bh6 Ng4 29.Qc6 Nf2?? 30.Qe8+– Kh7 Qe7 Kh6 32.Qf8 Kg5 33.Qf2 (33…Qf2 34.Kf2+–; 33.Rf2?! Qa1 34.Rf1 Qd4 35.Kh1 Qe5+/–) 1–0. Riglewicz,Josef – Neil,Wilson, Pinfork Grand Prix #3, 1996.

5.Bc4 Nbd7 6.Nge2 Nb6 7.Bb3 Be6 8.0–0 Nc4 9.Bc1 c6 10.d4 Nb6 11.d5 Bd7 12.Ng3 cd5 13.ed5 Rc8 14.Nce4 Ne4 15.Ne4 f5 16.Nd2 0–0 17.c4 Kh8 18.a4 Be8 19.a5 Nd7 20.Ra3 Nf6 21.Ba2 Bh5 22.Qc2 (better is 22.Qb3!?=) 22...Nd5+= 23.Qb3 (23.cd5 Rc2 Pinning (23...Rc2 Deflection)) 23...Nf6 (23...Nf4 24.Bb2–/+) 24.f4 e4 25.Qe3 (25.Bb2!?–/+) 25...d5–+ 26.Bb2? (better is 26.c5 d4 27.Qe1–+) 26...Bb4 27.Rb3 (27.cd5 Nd5 (worse is 27...Ba3 28.Qa3 Nd5 29.Nc4–+) 28.Qg3 Rc7–+) 27...Qa5 28.Rb4 Qb4 29.Ba3 d4! 30.Bb4 de3 31.Bf8 ed2 32.Bb3 0–1. Loos,Jaap (1645) – Loeve,Jaap (1715), Amsterdam NED, Science Park Open–B, 2013.

5.Bc4 Be6 6.Be6 fe6 7.Nf3 0–0 8.0–0 Nbd7 9.a4 d5 10.ed5 ed5=+ 11.d4 e4 12.Ne5? Bd6 13.f4 ef3 14.Nd7 fg2?? 15.Nf6+= Rf6 16.Rf6 Qf6 17.Kg2 Rf8 18.Kh1 Qh4 19.Qd2?? Rf2 (19...Rf2 20.Qh6 Rh2 21.Kg1 Qf2#; 19...Bb4?! 20.Qe3 Bd6 21.h3=) 0–1. jolaw – reddragonx (1790), internet, 2007.

5.d4 0–0 6.Nf3 Bg4 7.Be2 ed4 8.Nd4 Be2 9.Qe2 Re8 10.0–0–0 d5 11.Qb5 de4 12.Qb7 Nbd7 13.Nc6 Qc8 14.Qc8 Rac8 15.Na7 Ra8 16.Nc6 Kh8 17.Ne7 Re7 18.a4 1–0. marekt (1845) – a4fih, GameColony.com, 2002.

5.d4 Nc6 6.de5 de5 7.b5 (7.Qd8 Bd8 8.Bb5 Bd7 9.Bc6 Bc6= 10.Nf3=; 7.a3 Nd4 8.Nf3 Bg4 9.Nb5 Ne4 10.Nbd4=) 7...Qd1 (7...Nd4 8.Nce2 Ne4 9.f3 Nc5 10.Nd4–/+) 8.Rd1 Nd4 9.Bd3 (9.Rd2 Bb4 10.Nge2+=) 9...Be6 (9...Bg4 10.f3= (10.Nge2+=)) 10.a4 (10.f4 Bd6=) 10...0–0 11.Nge2 Bb4 12.0–0 Bc3 (12...c5!? 13.bc6 Nc6=) 13.Bc3+= Rfd8 14.f4 Ne2 15.Be2 Ne4 16.Be5 Rd1 17.Rd1 f6 18.Bc7 Nc3 19.Re1 Na4 20.Bf3 Rc8 21.Bd6 Kf7 (21...Bc4+/–) 22.f5?? (better is 22.Ra1 Nc5 23.Ra7+–) 22...Bf5+= 23.Re7 Kg6 24.Rb7 Nc3 25.Bc6 a6+= 26.ba6 Rc6 27.a7 Ra6 28.Bc5?? Bc2 29.Bf8–/+ Be4 30.Rg7 Kh5 31.Bc5 Nb5 32.g4 Kh4 33.Kf2 Kh3 34.Ke3 Bg6 35.Kf4 Kh2 36.Rb7 Ra4 37.Ke3 Na7! 38.Ba7 Kg3 39.Bb8 Kg4 40.Rg7 f5 41.Ra7 f4 42.Kf2 Rb4 43.Be5 Rb5 44.Bd4 Rb3 45.Ra4 Rf3 46.Kg2 Be4 47.Kh2 Rh3 48.Kg1 Rh1 49.Kf2 Rh2 50.Kg1 Rd2 51.Bf2 Rd1 52.Kh2 Rh1# 0–1. Trokenheim,Marek – Svensson,Bertil, Stockholm SWE, 1983.

5.d4 Nc6 6.de5 de5 7.Qd8 Nd8 8.a3 0–0 9.Nf3 Nc6 10.Nd5 Nd5 11.ed5 Nd4 12.Nd4 ed4 13.0–0–0 Bf6 14.Bd4 Bd4 15.Rd4 Bf5 16.g4 Bg6 17.f4 h6 18.f5 Bh7 19.Rc4 Rad8 20.Rc7 Rd5 21.Rb7 a5 22.b5 Rfd8 23.Bc4 R5d7 24.Rd7 Rd7 25.Rd1 Rc7 26.Rd8 1–0. marekt – NN, internet, 2002.

5.d4 Nc6 6.de5 de5 7.Qd8 Nd8 8.a3 a5 9.Nb5 Bd6 10.f3 ab4 11.Nd6 cd6 12.ab4 Ra1 13.Ba1 Nc6 14.Bb5 Ke7 15.Bc3 Nd7 16.Ne2 f6 17.Kf2 Rd8 18.Bd2 Nf8 19.c4 Ne6 20.Rd1 Ned4 21.Bc6 bc6 22.Nd4 ed4 23.b5 c5 24.b6 Be6 25.Ra1 Rb8 26.Ra7 Bd7 27.Ba5 g6 28.Rc7 h5 29.b7 Ke6 30.Ke2 f5 31.ef5 gf5 32.g3 Ke7 33.Kd3 Ke8 34.Bb6 Ke7 35.Ba7 1–0. themonkey – makn, GameColony.com, 2002.

5.d4 Nbd7 6.Nf3 c6 7.Be2 0–0 8.0–0 Re8 9.d5 Nf8 10.h3 Ng6 11.Bc1 Qc7 12.Be3 a6 13.a4 cd5 14.Nd5 Nd5 15.ed5 Bd7 16.Re1 Bf8 17.Ng5 Be7 18.c4 a5 19.Qd2 ab4 20.Qb4 Bc8 21.Bd3 Qa5 22.Qb5 h6?? 23.Qe8+– (23...Nf8 24.Qf7 Kh8 25.Qe7+–) 1–0. Caissa – 300SPARTANS, Live Game Caissa's Web, 2004.

5.Nd5 Ne4 6.Bd3 Nf6 7.Nf6 Bf6 8.c3 0–0 9.Nf3? Re8 10.h4?? e4 11.Bc4 ef3 12.Kf1 fg2 13.Kg2 d5 14.Bd3 Nc6 15.Bh7 Kh7 16.Qh5 Kg8 17.Qf3 Qd7 18.Rab1 Ne5 19.Qg3 Qg4 20.Qg4 Bg4 21.h5 Nd3 22.h6 Nb2 23.h7 Kh8 24.Rb2 Bf5 25.d4 Be4 (25...Be4 26.f3 Bg6–+) 0–1. saetta – Betty, ICS, 1999.

5.Be2 0–0 6.a3 Nc6 7.h3 h6 8.Nf3= a6 9.0–0 Nh5 10.Nd5 Be6 11.Ne7 Qe7 12.Ne5 de5 13.Bh5 Qg5 14.Bg4 Bg4 15.Qg4 Qd2 16.Qd1 Qf4 17.Qe2= Nd4 18.Bd4 ed4 19.Rad1 Rad8 20.Rd3 b6 21.Rf3 Qe5 22.Rf5 Qe6 23.Qd3 b5 24.f4 Rd6 25.Rc5+= Qd7 26.Rd1 f6 27.Qg3 Re8= 28.e5 fe5 29.fe5 Rde6 30.Qg4 d3 31.Rd3 Qf7 32.Rf3 Qd7 33.Rg3 c6 34.Rd3 Qf7 ˝–˝. mic (2215) – jlambe (2095), net–chess.com, 2007.

5.Be2 0–0 6.Nf3 Be6 7.0–0 Nc6 8.a3 a6 9.d3 b5 10.Ng5 Bd7 11.Nf3 Bg4 12.Nd5 Bf3 13.Bf3+= a5 14.Ne7 Qe7= 15.c3 ab4 16.cb4 Rfd8 17.Rc1 h6?? 18.Rc6+– (18.Rc6 Ra7 19.d4+–) 1–0. mic (2105) – deaf (2205), net–chess.com, 2007.

5.Be2 c6 6.a3 b5 7.h3 Be6 8.Nf3 0–0 9.Ng5 Bc4 10.Bc4 bc4 11.0–0 h6 12.Nf3+= Nbd7 13.Qe2 Nb6 14.a4 d5 15.ed5 cd5+= 16.Ne5 Re8 17.a5 Nc8 18.Nc6 Qc7 19.Ne7 Re7 20.Qf3 Qb7 21.Ba3 Rd7 22.Bb2 Qb4 23.Bc1 Ne7 24.Ba3 Qb7 25.Rab1 Qc6 26.Rfe1 Re8 27.Re5 Qc7 28.Rbe1 Ne4 29.Re7 Rde7? 30.Be7?? Qe7 31.Nd5 Qe5= 32.Nc3?? Nd2–+ 33.Qe3 Qe3?? 34.Re3= Re3 35.fe3+/– f5 36.Kf2 g5? 37.Ke2+– Ne4 38.Nd5 Kf7= 39.g4 fg4 40.hg4 Nf6 41.Nf6+= Kf6 42.c3 Ke5 43.Kf3+= Kf6 44.Ke4 h5?? 45.gh5+– Kg7 46.Kf5 Kh6 47.Kg4 1–0. mic (2200) – eweram (2050), net–chess.com, 2008.

5.Be2 Nc6 6.b5 Nd4 7.Nf3 Ne2 8.Qe2 Bd7 9.0–0 0–0 10.a4 c5 11.Qc4 b6 12.Nd5 Nd5 13.ed5 h6 14.d3 Bg5 15.Bc1 Bc1 16.Rfc1 Kh8 17.Nh4 Qg5 (18.Nf3 Qg6=; 17...a6 18.Nf3=). Buschmann,Benedikt – Fischer,Ch, GER–chT U13 Germany, 1997.

5.Be2 Be6 6.Nf3 0–0 7.0–0 Nbd7 8.h3 c6 9.Ng5 Qb6 10.Ne6 fe6 11.a3 Rad8 12.Na4 Qc7 13.d3 d5 14.Nc3 c5 15.ed5 ed5 16.Nb5 Qb8 17.bc5 Nc5 18.Nc3 d4 19.Nb1 Nd5 20.c4 Nf4 21.g3 Nh3–+ 22.Kg2 Ng5 23.Nd2 b6 24.Nb3 Qb7 25.Kh2 Nb3 26.Qb3 Rf6 27.c5 Kh8 28.cb6 Rh6 (28...Rh6 29.Bh5 Rh5 30.Kg1 Rh1#) 0–1. mic (2290) – kuksifae (2450), net–chess.com, 2007.

5.Nf3 a6 (--> 3.e4 a6 4.Nf3 Nf6 5.Nc3 Be7).

5.Nf3 c6 6.d4 ed4 7.Qd4 b6 8.Rd1+= 0–0 9.Bd3 c5 10.bc5 bc5 11.Qe3 Re8 12.0–0 Be6? 13.e5+– Ng4?? 14.Qe4 g6 15.Qa8 Qb6 16.Na4 Qa5 17.Nc3 de5?? 18.a4 Bd7 19.Qe4 f5 20.Qd5 Kg7 21.Ne5 Ne5 22.Qe5 Bf6 23.Qg3 Bc3 24.Bc3 Qc3 25.Bb5 Qg3 26.fg3 Bb5 27.ab5 Re7 28.Rfe1 a6?? 29.Re7 Kh6 30.Rd8 ab5 31.Rb8 b4 32.Rc7 Kg5 33.Rc5 h6 34.Rb4 Kh5 35.g4 Kg5 36.gf5 gf5 37.Rbb5 Kg4 38.Rf5 h5 39.Rh5 Kf4 40.Rb4 Ke3 41.Rh3 Kd2 42.c4 Kc2 43.Rf3 Kd2 44.Rb2 Kc1 45.Ra2 Kb1 46.Re2 Kc1 47.Rf1# 1–0. jearly (2210) – cruciverbalist (2155), net–chess.com, 2008.

5.Nf3 Nc6 6.b5 Nd4 7.Nd4 ed4 8.Nd5 Nd5 9.ed5 Bf6 10.Qe2 Be7 11.Bd4 0–0 12.Qf3 Re8 13.Be2 Bd7 14.0–0 a6 (14...Bg5 15.Rad1+=) 15.ba6+/– c6?? (better is 15...ba6 16.Rfe1 Bg5+/–) 16.ab7+– Ra4 17.dc6 Rd4 18.Rab1 (worse is 18.cd7 Qd7 19.Rfb1 Rb8+–) 18...d5 (18...Qb8 19.cd7 Rf8+–) 19.cd7 Qd7 (19...Rf8 20.b8Q Qb8 21.Rb8 Rb8 22.Bd3+–) 20.b8Q Rd2 21.Rb7 (better is 21.Qbf4 Bh4 22.Qd2+–) 21...Qa4 22.Re7 Rb8 (22...f6 23.Re8 Kf7 24.Qh5 g6 25.Qh7#) 23.Qf7 Kh8 24.Qg7# 1–0. Fournier,Frederic (2445) – Svetlana49 (1675), Chessworld.net, 2012.

5.Nf3 Nbd7 6.d4 c6 7.Be2 0–0 8.0–0 Qb6 9.a3 ed4 10.Nd4+= c5 11.Nf5+/– Re8 12.Nd5 Qd8? 13.Nde7 Kf8?? 14.Nc8 Rc8 15.Nd6 Re4 16.Ne4 Ne4 17.Bg4 Rc7 18.Re1 Nef6 19.Qd6 Kg8 20.Bf6 gf6 21.Rad1 (21.Rad1 Rc6 22.Qd5+–) 1–0. Rosner,Dirk – Borchard, Tiger SC, 2000.

5.Nf3 Nbd7 6.Be2 0–0 7.0–0 b6 8.d4 ed4 9.Nd4 Bb7 10.Nf5 Ne5 11.f4+= Ng6 12.Qd3 d5 13.Nd5 Bd5 14.ed5 Bb4 15.Qf3 Bc5 16.Kh1 Qd5 17.Qd5 Nd5 18.Bg7 Rfe8 19.Bb5 Red8 20.Bc6 Rab8 21.Be5 Bd6?? 22.Bd6+– cd6 23.Bd5 Rbc8 24.Nh6 Kg7 25.Nf7 Rf8 26.f5 Rf7 27.Bf7 Ne5 28.Bb3 1–0. b4_player (1885) – mitre42 (1630), GameColony.com, 2002.

5.Nf3 Be6 6.d4 ed4 (6...0–0!?=) 7.Nd4+= 0–0 8.Ne6 fe6 9.Bc4 Qd7 10.0–0 c6 11.Re1 (better is 11.e5!? de5 12.Qd7 Nbd7 13.Be6 Kh8 14.Rad1+=) 11...d5= 12.ed5 cd5 13.Bb5 Qd6 (13...Nc6 14.a3 Bd6 15.Bd3=) 14.a3 (14.Qe2!? Nc6 15.Qe6 Qe6 16.Re6+/–) 14...a6= 15.Bd3 e5 16.f3 d4 (better is 16...b5+=) 17.Ne4+/– Ne4 18.Re4 (18.fe4?! Nd7=) 18...h6 (18...Nc6 19.Rg4+/–) 19.Qe2 Bg5? (19...Nc6 20.Rg4 h5 21.Rg6+/–) 20.c3 (better is 20.Re5 Nc6 21.Re6+–) 20...Be3 21.Kh1 Nd7? (21...Nc6!?+/–) 22.cd4 (22.Bc4 Kh8 23.Rd1 Qc7 24.cd4 Bd4 25.Bd4 ed4+–) 22...Bd4 23.Bd4 (23.Rd1 Kh8 24.Bc2 Nf6 25.Bd4 ed4 (25...Ne4?? 26.Qe4 Kg8 27.Be5 Qe5 28.Qe5+–) 26.Red4 Qb6+–) 23...ed4 24.Qa2 (better is 24.Re6!? Qf4 25.Re7+–) 24...Kh8+/– 25.Rae1 (25.Re6 Qc7+=) 25...Nf6+= 26.Re6 Rfe8? (better is 26...Qc7=) 27.Re8+– (27.Rd6?? Re1 28.Bf1 Rf1) 27...Re8 28.Re8 Ne8 29.Qf7 Nf6 (29...Nc7 30.Qf5 g6 31.Qc8 (31.Qg6?! Qg6 32.Bg6 Nb5+/–) 31...Kg7 32.Qb7+–) 30.Qb7 h5?? (30...Qe6 31.Qa8 Ng8+–) 31.Qc8 Ng8 32.Bc4 Kh7 33.Qg8 Kg6 34.Qe6 (better is 34.Qe8 Kh6 35.Qh8 Kg6 36.Bd3 Kf7 37.Qh5 Kf8 38.Qf5 Ke8+–) 34...Qe6 35.Be6 d3 36.Bb3 Kf5 37.Kg1 Kf4 (37...Ke5+–) 38.Kf2 h4 (38...g5 39.g3 Kf5 40.Ke3+–) 39.g3 hg3 (39...Ke5 40.Ke3+–) 40.hg3 Ke5 41.Ke3 d2 42.Kd2 Kd4 43.a4 g5 (43...a5+–) 44.b5 ab5 45.ab5 Kc5 46.Ba4 Kb4 47.b6 Ka4 48.b7 Kb5 49.b8Q Kc5 50.Qd8 g4 51.f4 Kc6 52.Kc3 Kc5 (52...Kb7 53.f5 Kc6 54.f6 Kc5 55.f7 Kb5 56.Qc8 Kb6 57.f8Q Kb5 58.Qb4) 53.Qd7 Kb6 54.Kc4 Ka5 (54...Ka6 55.Kc5 Ka5 56.Qb5) 55.Qb5 1–0. Unzhakova,Irina – Suriev,Nikolay, Koltsovo RUS, Open, 2014.

5.h3 Be6 6.Nf3 h6 7.d4 ed4 8.Nd4 Nbd7 9.Ne6 fe6 10.Bc4 Nf8? (better is 10...Kf7!?+=) 11.0–0+– c6 12.Bb3 Qc7 13.a4 d5 14.ed5 0–0–0 15.b5 cd5 16.a5 Qb8? (better is 16...Ng6!?+/–) 17.b6 a6 18.Qe2 Bd6 19.Na2 e5? (better is 19...Bc5 20.c4 d4+–) 20.c4 d4 21.Kh1 (better is 21.c5 Bc5 22.Rac1+–) 21...Re8?? (better is 21...Ne6 22.c5 Nc5+/–) 22.c5+– Bc5 23.Rfc1 Qd6 24.Rc5! Qc5 25.Rc1 Qc1 26.Nc1 Kb8 27.Ba4 N8d7 28.Na2 Rc8 29.Ba3 e4 30.Bd6 Ka8 31.Bd7 d3 32.Qe3 Rc2 33.Be6 Re2?? 34.Qc5 d2 35.Nc3 e3 36.Bc8 Ne8 37.Bb7! Kb7 38.Qd5 Kc8 39.Qc6 Kd8 40.b7 Re1 41.Kh2 Rb1 42.Qc8# 1–0. Woloszyn,Piotr (1680) – Budrewicz,Henryk (1625), 92nd YMCA Spring Poland, 2011.

5.Bc4 0–0

6.a3 Nc6 7.Nge2 Bg4 8.f3 Bh5 9.d4 a6 10.Nd5 ed4= 11.g4 Nd5 12.Bd5= Bh4 13.Kf1 Bg6 14.Bc6 bc6 15.Bd4 h5 16.h3 Qe7 17.Bf2 Bf2 18.Kf2= Qh4 19.Kg2 Rad8 20.Nf4 Qg5 21.Ng6 Qg6 22.Kf2 Qg5 23.Qe2 Qf4 24.Qe3 Qe3 25.Ke3+= hg4 26.hg4+/– f6 27.Rh2 d5 28.c3 Rfe8 29.Rd1 de4 30.Rd8 Rd8 31.fe4 Rd1+= ˝–˝. coloplayah (1960) – madsmurf (1790), net–chess.com, 2005.

6.a3 Nc6 7.Nf3= Bg4 8.h3 Bf3 9.Qf3 Nd4 10.Qd3 Ne6 11.g3 c6= 12.0–0–0 b5=+ 13.Ba2 a5–/+ 14.h4 ab4 15.ab4 Qb6 16.f3 Rfb8 17.Be6 fe6 18.h5 c5 19.bc5 Qc5 20.Qe3 d5 21.Qc5 Bc5 22.Nb1 d4 23.c3 b4 24.cd4 Bd4 25.Bd4 ed4 26.Kb2 Ra5 27.d3 Rh5 28.Rh5 Nh5–+ 29.g4 Nf4 30.Kb3 Ne2 31.Kc4 Nc3 32.Re1 e5 33.Kc5 g5 34.Kd6 Rb5 35.Nd2 b3 36.Nb1 Kf7?? 37.Kc6? Ra5–+ 38.Nd2 b2 39.Nc4 Ra1 40.Nb2 Re1 41.Nc4 Ke6 42.Kc5 Rf1 43.Nd6 Rf3 44.Nf5 Rd3 45.Ng7 Kf7 46.Nf5 Rf3 47.Nd4 ed4 48.Kd4 Ne4 49.Ke4 Rf4 (49...Rf4 50.Ke3 Rg4–+) 0–1. Schwab,Carsten – Weiersmueller,O, Silvaplana op3, 1993.

6.d3 c6 7.Nge2 b5 8.Bb3=+ Qb6 9.a4= Ng4 10.0–0 Bh4 11.g3+/– Bg5 12.a5 Qd8 13.f4 Ne3–/+ 14.Qd2 Nf1 15.Rf1 Bh6 16.Qe1 Bh3 17.Rf2 Nd7 18.Nd1 g6 19.fe5 Ne5 20.Be5 de5–+ 21.Nb2? Be3 (21...Be3 22.Nd1 Bf2 23.Nf2 Bd7–+) 0–1. Calloway,Paul – Wall,Bill, Winston–Salem, 1975.

6.d3 Nc6 7.a3+= h6 (7...Nd4 8.Nge2=) 8.h3 Bd7 9.Nf3 Qc8 10.Qd2 Be6 11.Be6 Qe6 12.0–0 Rfd8 13.Rfe1 Nh5 14.Nd5 Qd7 15.Qe2 Nf6 16.Nc3 (16.b5 Nb8 17.d4 Nd5 18.ed5 f6+=) 16...Re8 17.Qe3 Rad8 18.Ne2 Nh7 19.Ng3 Bg5 20.Ng5 Ng5 21.Nh5 Qe6 (21...Ne6 22.Qg3 Kh7 23.f4+=) 22.f4 ef4 23.Qf4 (23.Nf4 Qd7+=) 23...Ne5 24.d4?? (24.Re3 Qg6 25.Ng3 c6+=) 24...Ng6?? (better is 24...Nef3! 25.Kh1 Ne1 26.Re1 Ne4–+) 25.Qf5= Ne4 26.Qe6+/– Re6 27.d5 Re7 28.Ng7 Ng5? 29.Nf5 Re1 30.Re1 c6? 31.dc6 bc6 32.Nh6 Kh7 33.Nf5 c5?? 34.Bf6 Nh3 35.gh3 Rg8 36.Kh2 Nf4 37.Rg1 Rg1+/– 38.Kg1 Kg6 39.Nd6 Kf6 40.Kh2 cb4+/– 41.ab4 Nd5 42.b5 Nc7 43.c4 Ke6 44.Nc8 a5 45.Nb6 Kd6 46.Na4 f5 47.Kg3 Ne6 48.h4 Ke7 49.c5 Kf6 50.c6 Kg6 51.b6 Kh5 52.c7 f4 53.Kf2 (53.Kf2 Kh4 54.c8Q+–) 1–0. Saar,Christian – Lentz,Florian, GER–chT WK U18 4th, 2008.

6.Nd5 Nd5 7.Bd5 c6 8.Bb3 Be6 9.c4 d5. abhijit (1830) – buddah (1880), net–chess.com, 2002.

6.Nge2 a6 7.0–0= Nc6 8.Ng3 Nd4 9.Nce2=+ Ne2 10.Qe2 Bg4 11.f3 Bh5 12.Nh5 Nh5 13.a3 Nf4 14.Qf2 Bh4=+ 15.Qe3 Qg5 16.g4 h5 17.h3? Nh3–+ 18.Kh2 Nf4 19.d4? hg4 20.Rg1 g3 (20...g3 21.Rg3 Qg3 22.Kh1 Qg2#) 0–1. savage13 – Steve20, ChessWorld.net, 2007.

6.Nge2 c6 7.0–0 d5 8.ed5 (8.Bb3 d4 (8...de4 9.Ng3 Bg4 10.Qe1 e3 11.Qe3 Bb4 12.h3 Bc8 13.Qe5 Re8=) 9.Na4 Bb4 10.c3 dc3 11.Nac3 Bc5 12.Qc2 Bg4 13.h3 Bh5–/+) 8...cd5 9.Bb3 Bb4 10.d4 (10.a3 Be7 11.d4 e4 12.Nf4 Be6 13.f3 Nc6=) 10...e4 11.f3 (11.Nf4 Be6 12.a3 Bc3 13.Bc3 Nc6–/+) 11...ef3 12.Rf3 Nc6 (12...Re8 13.Qd3 Bg4–/+) 13.Qd3 (13.a3 Ba5–/+) 13...Be6 (13...Bg4–/+) 14.a3 Be7 15.Nf4 Rc8 16.Re3 Na5 17.Ne6 fe6 18.Re6 Nb3 19.cb3 Qd7 20.Qh3 Rf7 21.Rc1 Rcf8 22.Rce1 Bd8 23.a4? (23.R6e2!?+=) 23...Bb6–/+ 24.Nb5? (24.Qd3 Ng4 25.Nb5–+) 24...Ne4–+ 25.Ba3?? (25.R6e4 Qh3 26.gh3 de4 27.Ba3–+) 25...Ng5 26.Qd3 Ne6 27.Bf8 Nf8 28.Re3 a6 29.Nc3 Qf5 30.Qf5 Rf5 31.Rd3 Ne6 32.Ne2 Nd4! 33.Rd4 Bd4 34.Nd4 Rf4 35.Ne6 Rb4 36.Nc5 a5 37.Kf2 b6 38.Nd3 Rb3 39.Ke3 Kf7 40.Kd4 Rd3! 41.Kd3 Ke6 42.Kd4 Kd6 43.g3 g6 44.h3 h6 45.g4 g5 46.Kd3 Ke5 47.Ke3 d4 48.Kd3 Kd5 49.Kd2 Ke4 50.Ke2 d3 51.Kd2 Kd4 52.Kd1 Ke3 53.Ke1 d2 54.Kd1 Kd3 55.h4 gh4 56.g5 h3 57.gh6 h2 58.h7 h1Q 0–1. Nestorenko,Dmitry – Odnorozhenko,E (2315), New Years All–Ukrainian Open, Poltava UKR, 2009.

6.Nge2 c6 7.d4 Qc7 8.d5 a6 9.a4 Qb6 10.Ba3 Ne8 (10...a5!? 11.b5 cb5 12.Bb5 Nbd7+=) 11.a5+= Qc7 12.Na4 Nd7 13.dc6 bc6 14.Ng3 g6 (14...c5 15.c3=) 15.h4 (15.Qd3 Nef6+=) 15...h5 16.Qd2 Nef6 17.Rd1 Bb7 18.Qg5 Kh7 19.Bc1? (better is 19.0–0=) 19...d5–+ 20.Qh6 Kg8 21.Be2 Qd6?? (21...Bb4!? 22.c3 Qa5 23.Qd2–+) 22.Nc5? (better is 22.Ba3=) 22...Nc5–+ 23.bc5 Qe6 (better is 23...Qc5!? 24.0–0 Rfd8–+) 24.Rh3 Ng4 (24...Bd8 25.Nh5 Ba5 (25...gh5 26.Rg3 Qg4 27.Bg4 hg4 28.Bg5+–) 26.c3 Nh5 (worse is 26...gh5 27.Rg3 Ng4 28.Qh5 Bc3 29.Kf1+–) 27.Bh5 de4+–) 25.Bg4= hg4 (25...Qg4? 26.f3 Qe6 27.Nh5+–) 26.Rh1 Bf6 27.h5 Bg7 28.Qg5 Bf6 29.Qh6 Bg7 30.Qg5 Bf6 ˝–˝. Ershov,Ilya (2020) – Miloserdova,Irina (2000), Anapa op, 2006.

6.Nge2 Nc6 7.a3 a6 8.0–0 h6 9.d4 ed4 10.Nd4 Ne5 11.Bb3 c5 12.Nf5 Bf5 13.ef5 Nc6 14.Qf3 cb4 15.ab4 Nb4 16.Qb7 Rb8 17.Qf3 Nc2 18.Bc2 Rb2 19.Ba4 d5 20.Rfd1 (20.Bc6!? d4 21.Nd5–/+) 20...Bc5–+ 21.Ra2 (21.Rf1 Qd6–+) 21...Ra2 22.Na2 Ne4 23.Rf1 (23.Nc3 Nf2 24.Rd5 Ng4 25.Rc5 Qd4 26.Kh1 Nf2 27.Kg1 Ne4 28.Kh1 Nc5–+) 23...Nf2 24.Rf2 Qa5 (worse is 24...Bf2 25.Qf2 Qa5 26.Bd1–+) 25.Bb3 Qe1 0–1. Wurm,Tamas – Kocandrle,Jaroslav (2085), IECG, 2006.

6.Nge2 Nc6 7.a3 a6 8.0–0= h6 9.h3 Bd7 10.f4 Nh7 11.Nd5+= Bh4 12.fe5 Ne5+= 13.Bb3 c6 14.Ne3 Ng5 15.d3 Kh8 16.Nf5+/– Bf5 17.Rf5 Ne6 18.Be5 de5 19.Re5 Bf6=+ 20.Re6 fe6 21.d4=+ e5 22.d5 Qb6–/+ 23.Kh2 Qe3 24.Ng3 Rad8 25.Qg4 Qf4 26.Qf4? ef4–+ 27.Nf5? Ba1 (28.dc6 bc6–+) 0–1. Gadea,FS – Sanchez,R1, Albacete–ch Primera, 1994.

6.Nge2 Be6 7.Bb3 Bb3 8.ab3 Nbd7 9.0–0 a6 10.Ng3 Rc8 11.b5 ab5 12.Nb5 c6 13.Nc3 Ra8 (13...d5 14.Qf3=) 14.Qf3 g6 15.Qe3 Qb6 16.Qg5 Nd5 17.Nd5 Bg5 18.Nb6 Nb6 19.d3 Ra1 20.Ra1 (worse is 20.Ba1 Ra8+=) 20...Ra8 21.Ra8 Na8 22.Ba3 c5 23.Ne2 Nc7 24.Nc3 Kg7 25.Kf1 Be7 26.Nd5 Nd5 27.ed5 Kf6 28.Ke2 Kf5 29.Kf3 h5 30.h3 b6 31.Bc1 g5 32.g4 hg4 33.hg4 Kg6 34.Ke4 f6 35.Be3 Bd8 36.c3 Be7 37.d4 ed4 38.cd4 Bd8 39.dc5 bc5 40.f3 Bc7 (40...Ba5!?=) 41.Bf2 Bd8 42.Bg3 Be7 43.f4 Bf8 44.f5 Kf7 45.Kd3 Ke8 46.Kc4 Kd7 47.Kb5 Be7 48.Be1 Bd8 49.b4 cb4 50.Bb4 ˝–˝. Schaper,Jan Erik – Schulze,Klaus Dieter, Schleswig Holstein–ch B, 2009.

6.Nge2 Be6 7.Bb3 Nc6 8.a3 Bb3 9.cb3 d5 10.ed5 Nd5 11.0–0 Nc3 12.dc3 Qd1 13.Rfd1 Rad8 14.Kf1 Rd1 15.Rd1 Rd8 16.Rd8 Bd8 17.Ng3 f6 18.Ke2 Kf7 19.Kd3 Ke6 ˝–˝. Truksa,V (1755) – Priborsky,Marek (1670), Most op–A, 1999.

6.Nge2 Nh5 7.0–0= a6 8.d4 b5 9.Bb3 Kh8 10.de5+/– de5 11.Nd5 c6 12.Ne3 f6 13.Nc3 Bb4?? 14.Ne2?? Nd7 15.Nf5 Nc5 16.Neg3 Ng3 17.fg3? Ne4 18.Qd8? Rd8 19.Nh4 Bc5 20.Kh1 Nf2 21.Rf2 Bf2 22.Nf3 e4 23.Ng1 e3 24.Bc3 Bg4 25.h3 Bf5 26.Ne2 Rd7 27.Rf1 Rad8 28.Nd4 Be4 29.Be6 Rd6 30.Bg4 Bg3 31.Nf5 Bf5 32.Bf5 Rd1 (32...Rd1 33.Be1 e2 34.Rf2 Re1 35.Rf1 ef1Q#) 0–1. savage13 – carlosfandangos, ChessWorld.net, 2007.

6.Nf3 (--> 5.Nf3 0–0 6.Bc4).

5.d4 ed4

6.Qd4 0–0 7.Nd5 Nc6 8.Qc3 Be6 9.Nf3 Bd5 10.ed5 Ne5 11.0–0–0 Nfg4 12.Rd2 Bf6 13.h3 Nf3 14.Qf3 Bb2 15.Kb2 Ne5 16.Qe4 unclear. COMP – tst1, internet, 2001.

6.Qd4 0–0 7.Nd5 Nc6 8.Qc3 Re8 9.Bb5 Be6 10.Bc6 bc6 11.Ne7 Qe7 12.Ne2 d5 13.0–0 de4 14.Nd4 Nd5 15.Nc6 Nc3 16.Ne7 Re7 17.Bc3 Rd7 18.Rfe1 f5 19.f3 Bd5 20.Rad1 ef3 21.gf3 c6 22.a4 Rb7 23.Rd3 Kf7 24.Re5 g6 25.Kf2 Re7 26.Re7 Ke7 27.Re3 Kd7 28.Rd3 Re8 29.Bd2 Kc7 30.Rd4 Re6 31.c4 1–0. marekt – NN, GameColony.com, 2002.

6.Qd4 0–0 7.Nd5 Nd5 8.Qg7# 1–0. marus1 – batak1, internet, 2001.

6.Qd4 Nc6 7.Qc4 0–0 8.Nd5 Nd5 9.ed5 Ne5 10.Qe4 Qe8 11.0–0–0 Bf6 12.f4 Ng4 13.Qe8 Re8 14.Bf6 gf6 15.Nh3 Ne3 16.Rd2 Nf1 17.Rf1 Bh3 18.gh3 Re3 19.h4 Rh3 20.Rg2 Kh8 21.c4 Rh4 22.Kd2 Rg8 23.Re2 h5 24.Kd3 Rgg4 25.Re7 Kg7 26.Rc7 Rh2 27.Rb7 Ra2 28.Rd7 Rgg2 29.Rd6 Rad2 30.Ke4 Rge2 31.Kf3 Ra2 32.Rg1 Kh6 33.Rf6 Kh7 34.Rf7 Kh6 35.d6 Red2 36.d7 Rd3 37.Ke4 Raa3 38.Kf5 Rd6 39.d8Q Rd8 40.Rg6 1–0. marekt – pentamorion, GameColony.com, 2002.

6.Qd4 Nc6 7.Qc4 0–0 8.Nd5 Re8 9.b5 Ne5 10.Be5 Nd5 11.Bg7 Kg7 12.Qd5 Bf6 13.0–0–0 Be6 14.Qb7 Ba2 15.f4 Rb8 16.Qa6 Be6 17.e5 Be7 18.Nf3 Qc8 19.Qa7 de5 20.Qa1 Ra8 21.Qe5 Bf6 22.Qc5 Ra1 23.Kd2 Qd7 24.Bd3 Rd1 25.Rd1 Bg4 26.Re1 Re1 27.Ke1 Bf3 28.gf3 Bh4 29.Kd1 f6 30.Qh5 Qh3 31.Qh7 Kf8 32.Qc7 Qf3 33.Kd2 Qg2 34.Kc3 Be1 35.Kc4 Qg8 36.Kc5 Bf2 37.Kd6 Qf7 38.b6 Bb6 39.Qb6 Qe7 40.Kd5 Qf7 41.Qe6 Qb7 42.Kd4 Qa7 43.Ke4 Qb7 44.Kf5 Qh7 45.Kf6 Qg6 46.Ke5 Qg7 47.Qf6 Qf6 48.Kf6 1–0. marekt – qufal, GameColony.com, 2002.

6.Qd4 Nc6 7.Qc4 Be6 8.Qb5 Qd7 9.Nd5 Bd5 10.ed5 Ne5 11.Qb7 0–0 12.Bb5 Qg4 13.Kf1 Qb4 14.Be5 de5 15.c4 Qc3 16.Re1 Bb4 17.Nf3 e4 18.Re3 Qa1 19.Ne1 Bc5 20.Re2 Bb6 21.Qc6 a6 22.Ba4 e3 23.fe3 Ng4 24.d6 Ne3 25.Re3 Be3 26.dc7 Bd2 27.Ke2 Qa2 28.Nc2 Ba5 29.Ra1 Qb2 30.Qd7 Rfe8 31.Kd3 Qc3# 0–1. marus1 – Wichtel2, internet, 2001.

5.Nf3 0–0

6.a3 a5 7.b5 d5 8.ed5 e4 9.Nd4 Nd5 10.Ne4 Re8 11.Qf3 Nd7 12.h3 Ne5= 13.Qb3 a4 14.Qa2 f5 15.Ne2 Nf7 16.N4g3 Be6 17.Qb1 Bg5 18.Kd1 Nd6 19.Nd4 Nf4 20.Rg1 Bd5 21.d3 Qe7 22.Bc3 Qd7 23.Bb4 Bf6 24.Bc3 Bd4 25.Bd4 Nb5 26.Bb2 Qe6 27.Kd2 Qb6 28.Be2 Qf2 29.Qe1 Qe3 30.Kd1 Qc5 31.c4 Bc4! 32.dc4 Ne2 33.Ne2 Rad8 34.Kc1 Qc4 35.Qc3 Nc3 (35...Nc3 36.Nc3 Re2–+) 0–1. aspasio (2115) – bot (2545), ICC, 1999.

6.a3 a6 7.Be2 Nc6 8.0–0 h6 9.Re1 b5 10.d4 ed4 11.Nd4 Nd4 12.Qd4 c5 13.bc5 dc5 14.Qe3 Bb7 15.Rad1 Qc7 16.e5 Nh7 17.Nd5 Bd5 18.Rd5 Rad8 19.c4 bc4 20.Bc4 Rd5 21.Bd5 Ng5 22.f4 Ne6 23.f5 Nd4 24.f6 Bd8 25.Qh3 Kh7?? (25...Re8 26.e6 Kf8 27.e7 Be7 28.fe7 Re7 29.Re7 Ke7+–) 26.Be4 (26.Be4 Kg8 27.Bc1+–) 1–0. acalado58 (2085) – nizef (1850), gameknot.com, 2015.

6.a3 Nbd7 7.Bc4 a5 8.b5 Nc5 9.Qe2 c6 10.bc6 bc6 11.Rb1 Bg4 12.h3 Bh5 13.g4 Bg6 14.d3 Rb8 15.Ba2 Rb6 16.Nh4 Qc7 17.Ng6 hg6 18.Bc1 Ne6 19.h4 Rfb8 20.Rb6+= Qb6 21.Be6 fe6 22.g5 Nh5 23.Qg4 Kf7 24.Rf1 Qc5 25.Kd2 Nf4 26.Ne2 Ne2 27.Qe2 d5 28.f4 d4 29.Qg4 Qc3 30.Kd1 Rb1 31.fe5+/– Ke8 32.Qe6 Rc1 33.Kc1 Qa1 34.Kd2 Qf1 35.Qc6 Kf7 36.Qc4 Ke8 37.Qd4 Qf4 38.Kc3 Qh4 39.e6 Qg5 40.Kc4 Kf8 41.Qa7 Qf6 42.Kd5 Bd8 43.Kd6 g5= 44.e5 Qg6 45.Qf2 Ke8+= 46.Qa7 Kf8 47.Qf2 Ke8+= 48.Qa7 Kf8= ˝–˝. Woelfelschneider,Peter – Plock,Joerg, corr SOK–99–E005A, 1999.

6.a3 Nbd7 7.d4 a6 8.Be2 ed4 (8...ed4 9.Nd4 b5=). drdoom – cabal, net–chess.com, 2005.

6.a3 Bg4 7.h3 Bh5 8.g4 Bg6 9.d3 Nbd7 10.h4 h5 11.g5 Ne8 12.Be2+= c6 13.Nd2 Nb6 14.Bh5 Bh5 15.Qh5 g6 16.Qg4 Ng7 17.f4 ef4 18.Ne2 a5 19.Nf4+– ab4 20.h5 f5? 21.Qh3 Bg5 22.hg6 Bh4 23.Qh4 Qh4 24.Rh4 ba3 25.Ra3 Rae8 26.Rh7 Re7 27.Nh5 (27.Nh5 fe4 28.de4 Ref7 29.Rf3 Nd7 30.Bg7 Rg7 31.Rg7 Kh8 32.Rd7 Ra8 33.Rh7 Kg8 34.Nf6 Kf8 35.Rf7#) 1–0. JF_ – Dircula, ChessWorld.net, 2005.

6.b5 c6 7.d4 ed4 8.Qd4 Re8 9.Be2 cb5 10.Bb5 Nc6 11.Qa4 Bg4 12.Bc6 (12.0–0!?=) 12...bc6=+ 13.Nd4 Qb6 14.Rb1 c5 15.Ba1 (15.Nde2 Rab8=+) 15...Qc7 (15...Ne4 16.0–0 Nc3 17.Bc3–/+) 16.Qc6 Qc6 17.Nc6 Bf8 18.f3 Bd7 19.Na5 d5 20.0–0 de4 21.fe4 Ne4 22.Rb7 Bg4 23.Ne4 Re4 24.Rff7 Re1 (24...Be6!? 25.Rf8 Kf8 26.Bg7 Kg8–/+) 25.Rf1=+ Re2 26.Rf2 Re1 27.Rf1 Re2 (27...Rf1 28.Kf1 Rd8 29.Be5=+) 28.Rf2= Re1 29.Rf1 Re2 (29...Rf1 30.Kf1 Rd8 31.Be5=+) ˝–˝. market (1920) – smackdownn, GameColony.com, 2002.

6.b5 Nbd7 7.Be2 Nc5 8.d4 Nce4 9.Ne4 Ne4 10.de5 a6 11.Qd5 Nc5 12.ba6 c6 (better is 12...Be6!? 13.Qd4 Na6=+) 13.ab7+= Bb7 (13...cd5?? 14.ba8Q (14.ba8R Qb6 15.Bd4 Qb7 16.Rc8 Qc8=; 14.bc8Q?? Qa5 15.Kd1 Rfc8 16.ed6 Ne4–+) 14...Qb6 15.Qa3+–) 14.Qd2 de5 15.Qd8 Rfd8 16.Be5 Ra4 17.Nd2 Kf8 18.Bb2 Ba6 19.Bf3 Bg5 20.Bc3 Rd6 21.h3 Bc4 (21...Re6!? 22.Kd1 Rd6=) 22.a3+= (< 22.Nc4 Rc4 23.Ba5 Re6 24.Kf1 Rc2=+) 22...Be6 23.Rd1 Bd5 24.Bb4 Re6 25.Kf1 Be7 26.Bg4 Rg6 27.Re1 Bd6 (27...Ne6 28.Be7 Ke7 29.Rh2+=) 28.c4 Be6 29.Be6 fe6 30.Nf3 Ra6 31.Rd1 Ke7? (better is 31...Be7+–) 32.Rd6! Kd6 33.Nd2 Ra8 34.g4 Ke5 35.Bc5 Ra5 (35...h5 36.f3+–) 36.Bd4 (36.Bb4 Ra4 37.Kg2 Kf6+–) 36...Kf4 (36...Kd6 37.Bb2+–) 37.Be3 (37.Kg2!? h5 38.Be3 Ke5 39.Nf3 Kd6+–) 37...Ke5 38.f4 Kd6 39.Ne4 Kc7 40.Bc5 Ra4 41.Nd6 e5 42.fe5 Re6 43.Nf5 Rc4 44.Bd6 Kd7 45.Ng7 Rg6 46.Nf5 h5 47.Ke2 (47.gh5 Rg5 48.Ke2 Rf5+=) 47...hg4 48.Ne3 Re4 49.hg4 (49.Kd3!? Rf4 50.hg4 Rf7+–) 49...Rgg4 50.Rh7 Kd8 51.Kd3 Rd4 (51...Rgf4 52.Nf5! Re1 53.Rf7 Rd1 54.Kc2+–) 52.Kc3 Rgf4 53.Nf5! Rd5 (53...Rf5 54.Kd4) 54.e6 Rf3 55.Kc4 Rf4 56.Bf4 Rf5 57.Bd6 Kc8 58.Rc7 Kd8 59.e7 Ke8 60.Rc8 Kf7 61.e8Q (61...Kf6 62.Qe7 Kg6 63.Rg8 Kh6 64.Qg7 Kh5 65.Rh8#) 1–0. b4_player (2230) – THE_MONK (1895), GameColony.com, 2003.

6.Bc4 a5 7.b5 a4 8.a3 Nbd7 9.Qe2 Nb6 10.Ba2 c6 11.0–0 Bg4 12.Qe3 Qd7 13.Qb6 Bf3 14.gf3 c5 15.Nd5 Bd8–+ 16.Nc7 Bc7 17.Qb7 Rfb8 18.Qc6 Qc6 19.bc6 Rb2 20.d3 Nh5 21.Rfc1 Nf4 22.Kf1 Ra6 23.Bd5 Rab6 24.Ke1 Ne6 25.Kd2 Nd4 0–1. Pasciuto,Alessandro – Bossuyt,Herman, corr BEL–ITA, 1980.

6.Bc4 a6 7.0–0 Bg4 8.Be2 Nc6 9.a3 d5 (9...Re8 10.Ng5 Be2 11.Qe2= (worse is 11.Ne2 h6 12.Nf3 Ne4–/+)) 10.d3 (10.ed5 Bf3 11.Bf3+/– (11.dc6?! Bc6 12.d3 Qd6=)) 10...d4= 11.Na2 Re8 (11...Bf3 12.Bf3 Qd6 13.Bg4+=) 12.c3 (12.Nd4 Nd4 13.Bg4 Ng4 14.Qg4 Nc2 15.Be5 Bf8=) 12...h6 (12...dc3 13.Nc3 Bf3 14.Bf3+=) 13.cd4 (13.Nd4!? ed4 14.Bg4 Ng4 15.Qg4 dc3 16.Bc3+/–) 13...Bf3= (worse is 13...ed4 14.Nd4 Nd4 15.Bg4+=) 14.Bf3 Nd4 15.Bd4 Qd4 (15...ed4?! 16.e5 Nd5 17.Qb3+=) 16.Rc1 Rac8 17.Rc4 Qd7 18.Rc2 (18.Qc2!?+=) 18...c5–/+ 19.Qb1 cb4 20.ab4 Rc2 21.Qc2 Rc8 22.Qd1 Qb5 23.Qb3 a5 24.h3 ab4 25.Qb2 Rd8 26.Be2 Qa5 27.Nc1 Bd6 28.Nb3 Qb6 29.Nd2 Qc7 30.Nc4 b5 31.Nd6 Qd6 32.Qb3 Rc8 33.Qa2 Qc5 34.Bf3 Qc3 35.Qe2 b3–+ 36.Rd1?? b2 37.Qf1 Qc1 38.Rc1 Rc1 39.Qc1 bc1Q 40.Kh2 b4 41.Be2 b3 42.Bf3 b2 43.Be2 b1Q 44.Bf3 Qh1 45.Kg3 Qd3 46.h4 Ne4 47.Kg4 Qd7 48.Kh5 Nf6# (48...Qf5#) 0–1. Mudrenova,Polina – Badzgaradze,Elena, 61st ch–RUS w 1st League, 2011.

6.Bc4 c5 7.bc5 dc5 8.Ne5 Be6 9.Nf3?? Bc4–+ 10.d3 Be6 11.0–0 Nc6 12.Re1 Nd4 13.h3 Rc8 14.Rb1 Nh5 15.Nd5 Bh4?? 16.Nd4+/– Bf2 17.Kf2 Qh4 18.Kg1 Bh3?? 19.Nf3+– Qg3 20.Qd2 Rc6 21.Ne7 Kh8 22.Nc6 Nf4 23.Be5 (23.Be5 Qg2 24.Qg2 Ng2 25.Rb7 Ne1 26.Ne1+–) 1–0. Robles,Dennis – Attardi,Ubaldo, IECC, 1999.

6.Bc4 c6 7.a3 a5 (7...d5 8.Bd3 Nbd7 9.0–0+=) 8.0–0 Qb6 (8...d5 9.Bd3 Nbd7 10.Qe2+=) 9.d3 (9.Qe2 Na6+=) 9...ab4= 10.ab4 Ra1 11.Qa1 Qb4 12.h3 (12.Rb1 Qc5=) 12...b5+= 13.Rb1 Qc5 (13...bc4?! 14.Bc1 c5 15.Nd5 Nd5 16.ed5 cd3 17.Rb4 cb4 18.Qa7=) 14.Bb3 Qb6 15.Bc1 Qc7 16.Ne2 h6 17.Bd2 Nbd7 18.Ng3 Nc5 19.Be3 Nb3 20.Rb3 Re8 21.Ra3 c5 22.Ra7 Qc6 23.Qc1 (23.Nh4 Bf8–/+) 23...Qb6 24.Qa3 Bf8 25.Ra8 Bb7 26.Qa7 Qc6 27.Re8 Ne8 28.Qa5 Qa6 29.Qa6 Ba6 30.Nd2 Bc8 31.f4 ef4 32.Bf4 g5 33.Be3 Ng7 34.Bf2 f5 35.ef5 Kf7 36.Kf1 Nf5 37.Nge4 Bb7 38.g4 Nh4 39.Bh4 gh4 40.Kf2 Be7 41.Nc3 b4 42.Nd1 Ke6 43.Nc4 Bg5 44.Nde3 Bc6 45.Ke2 Bh1 46.Nd1? Bg2 47.Nf2 Kd5 48.Na5 Kd4 49.Nd1 Bh3 50.Kf3 Bf1 51.Nb3 Ke5 (51...Ke5 52.Kf2 Bh3–+) 0–1. Straka,Jozef – Durco,Jaroslav, 23. Slovakia Championship Preliminary, 2009.

6.Bc4 Nc6 7.a3 a6 8.d3 Nd4 9.Nd4= ed4 10.Ne2 c5 (10...b5 11.Ba2 c5 12.0–0 Bb7 13.Qd2 Qc7) 11.0–0 b6 (11...Be6 12.Re1 Bc4 13.dc4 b5) 12.c3 (12.Nf4 b5 13.Bb3 Qc7) 12...d5 (12...dc3 13.Nc3 Be6) 13.ed5 Nd5 (13...b5 14.bc5 dc3 15.Nc3 Bc5 16.Bb3=) 14.Qb3 (14.bc5 dc3 15.Nc3 Nc3 16.Bc3 Bc5=) 14...dc3 (14...Nc7 15.cd4 cb4 16.a4–/+) 15.Nc3= Nf4 16.Nd5 Ne2 17.Kh1 Bd6 18.d4 (18.Rfe1!? Nd4 19.Qd1=) 18...Nd4+= 19.Bd4 cd4 20.Rad1 b5 21.Be2 Bb7 (21...Re8 22.Bf3–/+) 22.Rd4+= Qe8 (22...Re8 23.Bh5 g6 24.Bf3+=) 23.Qe3= Qe3 24.Ne3 (24.fe3 Kh8=) 24...Be5+= 25.Rd2 Rfd8 26.Ra2 Bc6 27.Kg1 Kf8 28.g3 g6 (28...Be4 29.Re1+=) 29.Rd1 (29.Rc1 Be4+=) 29...Rd1 30.Nd1 Rd8 31.Kf1 Be4 32.Ke1 Ke7 33.f4 Bf6 34.a4 Bc6 35.ab5 ab5 36.Ra7 Rd7 37.Rd7 Kd7+= 38.Kd2 Be7 39.Kc3 Ke6 40.Ne3 f5 41.Nc2 Bf6 42.Nd4 Kd6 43.Kd3 Bd7 44.Ke3 Kc7 ˝–˝. Hopper,Paul (2170) – Foord,Dominic (2040), Masters, Hastings ENG, 2008. (=1.e4 e5 2.Nf3 d6 3.b4 Nf6 4.Nc3 Be7 5.Bb2 0–0 6.Bc4)

6.Bc4 Bd7 7.0–0 Nc6 8.a3 a6 9.Re1 b5 10.Ba2 Bg4 11.h3 Bf3 12.Qf3 Qd7 13.Rad1 Nd4 14.Qd3 Nc6 (better is 14...c5!? 15.Rc1 c4=) 15.Nd5+/– Nd5 16.Qd5 Rad8 17.c4 Na7 18.cb5 ab5 19.d4 c6 20.Qb3 ed4 21.Bd4 c5 (better is 21...Kh8!?+/–) 22.bc5+– dc5 23.Bc5! Qc7? (23...Bc5 24.Qd5 Double attack (24.Rd7 Discovered attack; 24.Qd5 Decoy)) 24.Ba7 (24.Rd8 Bc5 25.Rf8 Kf8 26.Rc1 Bf2 27.Kf2 Qf4 28.Qf3 Qd2 29.Kg3 Qa2 30.Rc7+–) 24...Qa7+/– 25.Rd8 Rd8 26.Qf7 Kh8 27.Qb3 Rf8 28.Re2 Bh4 29.Qb2 1–0. Jokmin,Alex – Barna,Tamas Jr, RN–2009–0–00247, 2009.

6.Bc4 Nbd7 7.0–0 Ne8 8.Nd5 g6 9.Ne7 Qe7 10.d3 Ng7 11.Bc1 Kh8 12.Bh6 f5 13.Bg7 Qg7= 14.Ng5 Nf6 15.ef5 gf5 16.Ne6 Be6 17.Be6 Ng4 18.h3 Nh6 19.f4 Rf6 20.Bd5 c6 21.fe5 de5 22.Bf3 Rg8 23.Qd2 Rg6 24.Rae1 Rg3 25.Kh2= Nf7 26.Qf2 f4 27.Rg1 Ng5–+ 28.Bg4? Rg4 0–1. Flewelling,Heather – Doss,Jason R, Houston op, 1999.

6.Bc4 Ne4 7.Ne4= d5 8.Ne5 dc4 9.Qe2 b5=+ 10.a4 f6 11.ab5 fe5 12.Qc4= Rf7 13.Be5 Bb7 14.0–0 c6 15.bc6 Nc6–/+ 16.Bc3 a5 17.b5 Nb4 18.Bb4 Bb4 19.c3 Rc8 20.Qe2 Re7 21.f3 Bc5 22.d4 Bb6 23.Rac1 Bd5 24.Rfe1 Re5 25.Qf2 Bb3 26.Rb1 Rb5–+ 27.Re3 a4 28.Nd2 Ba5 29.Ne4 a3 30.Nc5 a2 31.Rbe1 Bd5 32.Ne6? Qd6 33.Ng5 Rb1 34.Qc2 Qg6 35.Qg6 hg6 (35...hg6 36.Kf2 Rf8–+) 0–1. Grobler,David – Zillmer,Jim, corr or01–018 E–mail, 2002.

6.Bc4 Be6 7.Be6 fe6 8.0–0 Nc6 9.a3 h6 (9...Nd4 10.d3=+) 10.Qe2 (10.d4 ed4 11.Nd4 Nd4 12.Qd4 Ng4=) 10...Nh7 (10...a6!?=) 11.Qc4 Qd7 12.b5 Nd8 13.a4 c6 14.d4 ed4 15.Qd4 e5 (better is 15...Nf7!?+=) 16.Ne5!+/– Qc7? (16...de5 17.Qd7) 17.Qc4+– Kh8 (17...Nf7 18.Nd5! Qd8 19.Ne7 Qe7+–) 18.Ng6# 1–0. combat – HondaCb, Live Game Caissa's Web, 2004.

6.Bc4 h6 7.0–0 Bg4 8.h3 Bh5 9.Re1 Nbd7 10.g4 Bg6 11.d4 Re8 12.Nh4 Be4 13.Ne4 Ne4 14.Nf3 Ng5 15.Ng5 Bg5 16.Qf3 Re7 17.de5 Ne5 18.Be5 de5 19.Qb7 1–0. Markus,Roland (2440) – Achermann,Josef (2160), CiF, 2006.

6.Bc4 h6 7.d4 ed4=+ 8.Nd4 b6 9.Qd3 Bb7 10.0–0–0 Nc6 11.Nd5 Nd5 12.ed5 Nb4=+ 13.Qf3 Bf6 14.a3 Na6 15.Rhe1 Nc5 16.Nc6 Bc6 17.dc6 Bb2–/+ 18.Kb2 a5 19.Bd3 Na4 20.Kc1 Nc5 21.Qf5 Qg5 22.Re3?? Qf5 23.Bf5–/+ Rae8 24.Re8 Re8 25.Bd7 Nd7 26.cd7 Rd8 27.Re1 Rd7 28.Re8 Kh7 29.c4 f6 30.g4 d5 31.cd5 Rd5 32.Rc8 c5 33.Rc6 b5 34.Ra6 a4 35.Re6 c4 36.Re2 Rd3 37.Kb2 Rb3 38.Ka2 c3 39.f4 b4 40.ab4 Rb4 41.Ka3 Rc4 42.Rc2 Kg6 43.h4 f5 44.h5 Kf6 45.gf5 Kf5 46.Ka2 Kf4 47.Rf2 Kg5 48.Kb1 Kh5 49.Kc2 g5 50.Rh2 Kg6 51.Rh3 g4 52.Rc3 Rc3 53.Kc3 g3 54.Kb4 g2 55.Ka4 g1Q 56.Ka5 Qc5 57.Ka4 Kf6 58.Kb3 Ke5 59.Ka4 Kd4 60.Kb3 h5 (60...h5 61.Kb2 Qb5 62.Kc2 h4 63.Kd2 Qb2 64.Ke1 Ke3 65.Kf1 Qf2#; 60...Qb5 61.Kc2 h5 62.Kd2 Qb2 63.Ke1 Ke3 64.Kf1 Qf2#) 0–1. bvanderweerd (1900) – pillsbury (2075), net–chess.com, 2007.

6.Bd3 Bg4 7.0–0 Nc6 8.a3 Nd4 9.Ne2?? Nf3–+ 10.gf3 Bf3 11.Qe1 Nh5 12.Qc1?? Bh4 13.Ng3–+ Qg5 14.Bc4 Ng3 15.fg3 Be4 16.d3 Qc1?? 17.Rac1 Bg5 18.de4 Bc1 19.Bc1 h6 20.b5 c6 21.a4 Rac8 22.Bd3 d5=+ 23.Ba3 Rfe8 24.ed5 cd5–/+ 25.Bf5 Rc4 26.b6 ab6 27.Bd7? Rd8–+ 28.Bb5 Rc2 29.Rf2 Rf2 30.Kf2 f5 31.Bb4? Kf7 32.Kf3 Ke6 33.Ke3 d4 34.Kf3 e4 35.Kf4 g5# 0–1. rla – reddragonx (1770), internet, 2007.

6.Bd3 Bg4 7.Be2 Nc6 8.b5 Bf3 9.Bf3 Nd4 10.0–0 Qd7 11.Be2 c6 12.bc6 bc6 13.Rb1 d5 14.Bd3 de4 (14...Rab8 15.Re1=+) 15.Ne4= Ne4 16.Be4 f5 17.Bd4 Qd4 18.Bc6 Rac8 19.c3 Qd6 20.Bb7 Rcd8 21.c4 Qd4 22.Bd5 Kh8 23.Rb7 Bd6 24.Qf3 Qd2 25.Qg3 Qh6 26.Ra7 Rf6 27.Qh3 Qg5 28.Rf7 (28.Ra5 Rh6 29.Qe3 Qh4+/–) 28...Rf8 (28...Rf7 29.Bf7 Rf8 30.Qd3+=) 29.Rf8+/– Rf8 30.a4 e4 31.Qe3 Qe7 32.Rb1 Bc5 33.Qe2 Qe5 34.a5 Bd6 35.g3 Bc5 36.Rb5 Qa1 37.Kg2 Qd4 (37...Bd4!?+/–) 38.Qe3+– (38...Qd5 39.cd5 (39.Rc5?! Qe6+/–; 39.Qc5?! Qa8+–) 39...Be3 40.fe3+–) 1–0. marekt – Striderthree, ChessWorld.net, 2003.

6.Bd3 Bg4 7.h3 Be6 8.0–0 Nbd7 9.Ng5 c5 10.a3 h6 11.Ne6 fe6 12.Bc4 d5 13.ed5 ed5?? 14.Nd5+– Kh8 15.Ne7 Qe7 16.Qe2 cb4 17.ab4 Rfe8 18.Rfb1 b6 19.Ra4 Reb8 20.d4 b5 21.Bb5 Nb6 22.Raa1 e4 23.c4 Qb4 24.d5 Qe7 25.Bc6 Rc8 26.Ba8 Ra8 27.Bd4 Nc8 28.Ra6 Kg8 29.Bf6 gf6 30.Re6 Qh7 31.Re8 Kf7 32.Qh5 Qg6 33.Rb7 (33.Rb7 Ke8 34.Qg6 Kd8 35.Qg8#) 1–0. gtate (2520) – luckylucciano (2200), net–chess.com, 2007.

6.d4 Nc6 7.b5 Nd4 8.Nd4 ed4 9.Qd4 Re8 (9...c5 10.Qd2=) 10.Be2 c5 11.Qd3 Be6 12.Rd1 Qa5 13.0–0 Rad8 (13...a6 14.Qg3=) 14.a3 d5 15.ed5 Nd5 16.Nd5 Rd5 (16...Bd5 17.Qf5 g6 18.Qe5+=) 17.Qe4+= Qd8 (17...Rd1 18.Rd1 Qc7 19.Be5+=) 18.Bf3+/– Rd7 19.Rd7 Qd7 20.Qb7 Qb7 21.Bb7 Rb8 22.Bc6 Bc4 (22...Rd8 23.Re1+/–) 23.Be5+– Rd8 24.Re1 Kf8 (24...Be6 25.Be4+–) 25.a4 f6 26.Bc7 Rc8 27.Bg3 Kf7 (27...g5 28.a5 f5 29.Be5+–) 28.a5 Bd8 (28...f5 29.Bb7 Rd8 30.b6 ab6 31.a6 Ba6 32.Ba6+–) 29.Ra1 (29.b6!? Bb6 (29...Rc6?? 30.b7 Rc7 31.b8Q+–) 30.ab6 ab6+–) 29...Bc7 30.Bb7 (30.b6 ab6 31.Bb7 Bg3 32.fg3 Rd8+–) 30...Rb8 31.Bc7 Rb7 32.b6 ab6 (32...Ba6 33.f3+–) 33.ab6 Be6 34.f4 (34.f3 Ke7+–) 34...c4 (34...Bf5 35.c3 Ke6 36.Re1 Kf7 37.Rd1+–) 35.Kf2 Bf5 (35...Bd5 36.g3 Ke7 37.Ke3+–) 36.Ke3 Ke7 37.Kd4 Kd7 38.c3 Bd3 39.Kc5 (39.Ra8 Kc6+–) 39...h5 (39...h6 40.Ra8 Be4 41.Rg8+–) 40.Ra8 g6 (40...Ke7 41.Rh8+–) 41.Rd8 Ke7 (41...Ke6 42.g3+–) 42.Rd4 Bf1 43.g3 Ke6 44.Rc4 Bc4 (44...Bg2+–) 45.Kc4 g5 46.Kc5 Kd7 (46...h4 47.Kc6 Rb6 48.Bb6+–) 47.Kd5 h4 (47...Kc8 48.Kc6 gf4 49.gf4 f5+–) 48.f5 hg3 (48...Ke8 49.Kc6 Rb6 50.Bb6+–) 49.hg3 (49.hg3 Kc8 50.Ke6+–) 1–0. Sipila,Vilka (2425) – Chavez,Ricardo Ernesto (2165), Tromso NOR, 2014.

6.Be2 a6 7.0–0 Nc6 8.a3 Bd7 9.d4 ed4 10.Nd4 Nd4 11.Qd4 c5 12.Qe3 cb4 13.ab4 b5 14.Qg3 Bc6 15.Nd5 Bd5 16.ed5 Qc7 17.Bd3 g6 18.Qf3 Kg7 19.Rfe1 a5 20.ba5 Ra5 21.Ra5 Qa5 22.Re7 Qa2 23.Qf6 (23.Qf6 Kg8 24.Qg7#) 1–0. onurtasan – tpt456, internet, 2007.

6.Be2 a6 7.0–0 Nc6 8.h3 h6 9.Nd5 Nd5–/+ 10.ed5 Nb4 11.c3? Nd5–+ 12.d4 ed4 13.Qd4 Nf6 14.a4 Re8 15.Bd3 b6 16.c4 Bb7 17.Nh2 c5 18.Qe3 Bf8 19.Qd2 Nh7 20.Bh7 Kh7 21.Qd3 Kg8 22.Ng4 Be4 23.Qc3 Qg5 24.f4 Qg6 25.Rfe1 h5 26.Re4? Re4 27.Nf2 Rf4 28.Qe1 Rc4 29.Qe2 Rc2 30.Qf3 Rb8 31.Bc1 Re8 32.Bf4 Qf6 33.Rf1 Ree2 34.g3 h4 35.Kg2 hg3 36.Bg3 Qg6 37.Kh1 Qh6 38.h4 g5 39.Ng4 Qe6 40.hg5 Qg6 41.Nh6 Bh6 42.gh6 Qh6 43.Kg1 Qg7 44.Qa8 Qf8 45.Qf3 Qg7 46.Qa8 Qf8 47.Qf3= Qg7 ˝–˝. rsuzukovich (1815) – pillsbury (2075), net–chess.com, 2007.

6.Be2 b6 7.d4 ed4 8.Nd4 Bb7 9.Bd3 Nbd7 10.0–0 Re8 11.f4 Bf8 12.Re1 g6 13.Kh1 Bg7 14.Rb1 Nh5 15.Nf5 Nf4 16.Ng7 Nd3 17.cd3 Kg7 18.Rf1 Kg8 19.Qd2 a5 20.Qh6 f6 21.Rf3?? Ne5 22.Rh3=+ Qe7 23.Rf1? Qg7?? 24.Qd2 ab4–+ 25.Ne2 Bc8 26.Rg3 c5 27.Bc1 Rf8 28.Nf4 Rf7 29.Nh5 Qf8 30.Qb2? f5 31.Qb3 Kh8 32.Nf4 fe4 33.de4 Ba6 34.Ng6 hg6 35.Rh3 Kg8 36.Rf4 (continuation unknown) 0–1. Blaszczak – Cwiek, corr Poland, 1992.

6.Be2 c6 7.b5 Bg4 8.a4 Nbd7 9.Ba3 d5=+ 10.ed5 cd5 11.h3 Bf3 12.Bf3 Ba3 13.Ra3 Qe7 14.Ra1 e4 15.Bg4 Ne5 16.0–0 d4 17.Na2 Nfg4 18.f4 ef3 19.hg4 fg2 20.Kg2 Rfe8 21.Kh3 Ng6 22.Qe1 Nf4! 23.Kh2?? Qd6 24.Qg3 Qh6 25.Kg1 Ne2 (25...Ne2 26.Kg2 Ng3 27.Kg3 Qd2–+) 0–1. Soria,Gaspar D – Aberbach,Angel S, CAPA I ARG–cup pr/08, 1991.

6.Be2 Nc6 7.a3 a5 8.0–0 ab4–/+ 9.Nd5 ba3 10.Ne7 (better is 10.Ra3!? Ra3 11.Nf6 Bf6 12.Ba3–/+) 10...Qe7–+ 11.Ra3 Ra3 12.Ba3 Ne4 13.Bd3 Nf6 14.Re1 Bg4 15.Be2 e4 16.Ng5 Be2 17.Qe2 h6 (17...Nd4 18.Qd1 Qe5 19.Bb2–+) 18.Ne4 Qe4 19.Qe4 (19.Qe4 Ne4 20.Re4–+) 0–1. Neumann,Frank (1650) – Schiklang,Michael (2130), RSXT – ChessStars – FSOpen2009–1, 2009.

6.Be2 Nc6 7.a3 a5 8.b5 Nd4 9.Nd4 (9.0–0 c6=) 9...ed4+= 10.Na4 (10.Nd5 Nd5 11.ed5 Bf6+=) 10...Ne4–/+ 11.Bd4 Bf6 12.Bf6 Qf6 (worse is 12...gf6 13.0–0+=) 13.0–0 Qd4 14.d3 Nf2 15.Rf2 Qa4 16.d4 Re8 17.c4 Qd1 18.Rd1 Re2 19.Re2 Bg4 20.Rde1 (20.Kf2 Be2 21.Ke2 Re8 22.Kd3 f5–/+) 20...Be2 21.Re2 Kf8 22.Kf2 Re8 23.Re8 (23.Rd2!?–/+) 23...Ke8–+ 24.Ke3 Kd7 25.Ke4 Ke6 26.d5 (26.Kf3 b6–+) 26...Kf6 27.Kf4 (27.h4 Kg6 28.Kf4 f5–+) 27...g5 28.Kg4? (28.Ke4 b6 29.g3–+) 28...Kg6 29.a4 f5 30.Kf3 Kf6 31.h3 Ke5 32.Ke3 f4 33.Kd3 b6 34.Kd2 Kd4 35.Kc2 Ke3 36.Kd1 Kf2 0–1. Neumann,Frank (1640) – Lifanov,Vasily, Germany – Ukraine – In Memoriam Efim Bo, 2008.

6.Be2 Nc6 7.a3 a6 8.0–0 h6 9.d4 ed4 10.Nd4 Nd4 11.Bd3?? (better is 11.Qd4 Be6 12.Nd5+=) 11...c6 12.Bc4 Qb6?? (better is 12...Ne6–+) 13.Na4+= Qd8 14.Bd4 b5 15.Bb6?? Qd7 16.Bf7 Rf7 17.Nc3 Bb7 18.a4 c5 19.bc5 Qc6 20.Re1? dc5 21.Ba5 b4 22.Na2 Ne4 23.c3 Nc3 24.Nc3 Qg2 0–1. Neumann,Frank – Lebduska,Daniel, RN–2011–0–00412, 2011.

6.Be2 d5 7.Nd5 Nd5 8.ed5 =+.

6.Be2 Nbd7 7.0–0 Nb6 8.a4 a5 9.b5 Nbd7 10.d4 ed4 11.Nd4 Nc5 12.f3 b6 13.Nf5 (13.Re1 Bd7+=) 13...Re8 14.Ne7 Qe7 15.Nd5 Nd5 16.ed5?? (16.Qd5 Be6 17.Qd4 f6=) 16...Bf5 (better is 16...Qe2 17.Qd4 f6–+) 17.Re1+= Qg5 18.Qd4 (18.Ra3 Qh4 19.Qa1 Bc2 20.Bg7 Nd3 (worse is 20...Na4 21.Bh8 f6 22.Bf6+=) 21.Rd3 Bd3–/+) 18...f6 (18...Bc2!? 19.Ra3 f6–/+) 19.Bc1 Qg6 20.Qf4 Bc2–+ 21.Bb2 Ba4 22.Bd4 Bb3 23.Qg4? Qg4 24.fg4 Bd5 25.Bf3 Bf3 26.gf3 Re1 27.Re1 Kf7 28.Kg2 a4 29.Kg3 Ra5 30.Rb1 Nb3 31.Bf2 Rb5 32.Be1 c5 33.Kf4 Ke6 34.Bf2 d5 35.Ke3 d4 36.Kd3 Kd5 37.f4 c4 38.Kc2 Ke4 39.Bg3 c3 40.h4 Kf3 41.Bh2 Kg4 42.Bg1 Kf4 43.Kd3 Rb4 44.Bh2 Kg4 45.Bd6 Nc5 46.Kc2 Rb1 47.Kb1 d3 48.Bf4 Kf4 49.Kc1 Ke3 50.h5 Ke2 51.h6 gh6 52.Kb1 Kd2 53.Ka2 c2 (53...c2 54.Ka3 Kc3 55.Ka2 d2 56.Ka1 c1Q 57.Ka2 Qb2#) 0–1. Neumann,Frank – Wallerstorfer,Josef, RN–2011–0–00430, 2011.

6.Be2 Nbd7 7.d4 c6 8.0–0 Qc7 9.Re1 Re8 10.b5 Nf8 11.h3 Ng6 12.Bf1 h6 13.a4 Be6 14.Na2 Nh7 15.c4 ed4 16.Bd4 Ng5 17.Nd2 f5 18.Nc3? c5=+ 19.ef5 cd4 20.Re6 dc3–/+ 21.Rg6 cd2 22.Qd2 Bf6 23.Re1 Rad8 24.h4 Ne4?? 25.Qf4?? Qf7?? 26.c5?? Be5?? 27.Qg4?? d5 28.c6 b6 29.Rh6 Bd6 30.Bd3 Nf6–/+ ˝–˝. Skrzypczak,Michal (2100) – Kusmierz,Maciej (2180), Poland–chT2, 2004.

6.Be2 Be6 7.0–0 h6 8.d4+= ed4 9.Nd4 Bd7 10.b5 Bc8 11.f4 a6 12.a4 ab5 13.ab5 Ra1 14.Ba1 c6 15.Qd2 Qb6 16.Kh1 Nbd7 17.Nf5+/– Qd8 18.bc6 Nc5 19.Ne7 Qe7 20.Nd5 Nd5 21.ed5 Ne4 22.Qd4 Nf6 23.Bf3 Re8 24.c4 Rf8 25.Qa7+– 1–0. Chatterjee – Budzul, email 4AMM–08, 1997.

6.Be2 Re8 7.0–0 Bf8 8.Re1 d5 9.ed5 (9.Nd5!? Nd5 10.ed5=) 9...e4+= (worse is 9...Nd5 10.Nd5 Qd5 11.Bd3 Bb4 12.Re5 Re5 13.Ne5+=) 10.Ng5 h6 (10...Bb4 11.Bb5 Bg4 12.Be8 Bd1 13.Bf7 Kh8 14.Rad1 (worse is 14.Red1 Qe7 15.Be6 Bc3 16.Bc3 Nbd7+=) 14...Bc3 15.Be6+/–; worse is 10...Nd5 11.Nge4 Nb4 12.Bc4+=) 11.Nh3 Bh3 12.gh3 Bb4 13.Bc4 Nbd7 14.f4 (14.a3 Ba5–/+) 14...a6 15.Kh1 Nb6 16.Bb3 Bc3 (16...Nfd5 17.Nd5 Nd5 18.Qh5+=; 16...Nbd5 17.Nd5 Nd5 18.Qh5+=) 17.Bc3 Nfd5 (17...Nbd5 18.Be5–+) 18.Qh5–/+ Nc3 (18...f6!?–/+) 19.Bf7+= Kh8 20.Be8 Ncd5 (20...Qe8 21.Qe8 Re8 22.dc3+=) 21.Bf7 (worse is 21.Re4 Nf6 22.Qf7 Ne8–/+ (22...Ne4?! 23.Qf8 Kh7 24.Qf5 Kg8 25.Qf7 Kh7 26.Qf5 Kh8 27.Qf8 Kh7 28.Qf5=)) 21...Nf6 (21...Nf4 22.Qf5 Qd2 23.Qe4 Nh3 24.Qb7 Nf2 25.Kg1 Nh3 (25...Qc2?! 26.Qf3 Nd3 27.Re6 Qc5 28.Qe3=) 26.Kh1 Nf2 27.Kg1 Nh3 (27...Qc2?! 28.Qf3 Nd3 29.Re6 Qc5 30.Qe3=) 28.Kh1=) 22.Qg6+/– Qf8 23.Rg1 Nc8 24.Be6 Nd6 25.Rg2 Re8 26.Bb3 Re7 27.Rag1 Qc8 28.Qg3 c5 29.c3 Nf5 30.Qf2 e3 31.de3 Ne3 32.Re1+= Qe8 33.Rg3?? Ne4 34.Qf3 Ng3 35.hg3 Nf5 36.Re7= Qe7 37.Bc2?? Qe1–+ 38.Kh2 Qd2 39.Qg2 Qg2 40.Kg2 Ne3 41.Kf3 Nc2 42.Ke4 Ne1 43.Kd5 Nd3 44.Kc4 Nf2 45.Kc5 Nh3 46.Kb6 Nf4! 47.Kb7 Ne6 48.Ka6 h5 49.Kb5 g5 50.Kc4 h4 (50...h4 51.gh4 gh4–+) 0–1. Trumpp,Lothar (2040) – Feldtmann,Thomas (2190), Hessenliga, 2004. (=1.Nc3 d6 2.b4 e5 3.e4 Nf6 4.Bb2 Be7 5.Nf3 0–0)

6.Be2 Bg4 7.0–0 Nc6 8.a3 a6 9.h3 Bh5 10.Ne5 Be2 11.Nc6 Bd1 12.Nd8 Bc2 13.Nb7 Be4 14.Ne4 Ne4 15.Rac1 c5 16.Rfe1 Bf6 17.Bf6 Nf6 18.bc5 dc5 19.Kf1 Rfc8 20.Nc5 h6 21.d4 Rd8 22.Rcd1 a5 23.Ke2 Nd5 24.Kf3 g5 25.Re5 Kg7 26.h4 f6 27.Re6 Kg6 28.hg5 hg5 29.Rd2 Nf4 30.Rb6 Rd5 31.g3 Nh5 32.Ne4 Rf5 33.Kg4 Rd8 34.f3 Rdd5? 35.Nd6 Rb5 36.Nb5 Ng7 37.d5 Re5 38.d6 Nf5 39.d7 Ne3 40.Kh3 Rd5 41.Rd5 Nd5 42.d8Q 1–0. NN – Fritz 6, 2003.

6.Be2 h6 7.0–0= Nc6 8.b5 Nd4 9.Nd4 ed4 10.Nd5 Nd5 11.ed5 Bf6 12.Rb1 Bf5 13.Re1 Re8 14.a3 Re5 15.a4 Rd5 (15...Qd7 16.d3=+) 16.Bf3 Re5 (16...Rc5 17.d3 Rb8 18.Be4=+) 17.Re5= de5 18.Bb7 Rb8 19.Bc6 Bg5 20.Ba3 Qf6 21.Bc5 Qg6 (21...a6 22.Rb2=) 22.Ba7 (better is 22.Qe1 Bc2 23.Ra1+=) 22...Rf8?? (better is 22...Bc2!? 23.Qc1 A) < 23...Bb1 24.Bb8 Be4 25.Be4 (< 25.Bc7 Bc6 26.bc6 Bd2=+) 25...Qe4 26.Bc7+=; B) 23...Rd8=+) 23.Rb2 (23.d3 Bf4+/–) 23...Bh4 (23...Be4 24.Bc5 Bc6 25.Bf8+/– (25.bc6?! Ra8=)) 24.Bc5 Rc8 25.a5 d3 (25...Be4!? 26.Be4 Qe4+/–) 26.cd3+– Bd3 27.Rb4 e4 28.f3 ef3 (28...Qh5 29.Qc1 Bg5+–) 29.Qf3 Rd8?? (29...Bg5+–) 30.Rh4 Qe6 (30...Qg5 31.Qf2 Bb5 32.Be3+–) 31.Qd1 Qe5 (31...Qf5 32.Qc1+–) 32.Qc1 Qf6 33.Ra4 (33...Qf5 34.a6+–) 1–0. b4_player (1610) – haiku1 (1695), GameColony.com, 2002.

6.g4 Bg4–/+ 7.Rg1 Nc6 8.Nd5 Bf3 (8...Bh5!? 9.b5 Nd5 10.bc6 Nf6–+) 9.Qf3 Nd4 10.Qg2 g6 (< 10...Nc2 11.Kd1 g6 12.Nf6 Bf6 13.Kc2+/–) 11.Ne3 Re8 12.c3 Ne6 13.Qf3 Bf8 14.Bc4 c6 15.Ng4 Ng4 16.Rg4 b5 17.Bb3 a5 18.a4 ab4 19.cb4 ba4 20.Ra4 Ra4 21.Ba4 Qb6 22.Qc3 Nd4 (22...Rb8 23.Qc6 Qb4 24.Bc3–+) 23.Qc4 d5 (23...Rc8 24.Bd4 ed4 25.b5–/+) 24.ed5 (24.Bd4!? ed4 25.Qc6=+) 24...cd5–/+ 25.Qd5 Rd8 26.Bd4 Qb4?? (better is 26...ed4 27.Qc4 Qb4 28.Qb4 Bb4–/+) 27.Qd8+– (27...ed4 28.Rd4 Qb1 29.Bd1+–) 1–0. market (2155) – NN, GameColony.com, 2002.

6.g4 Bg4–/+ 7.Rg1 Bh5 8.Be2 g6 (8...Bg6 9.Nh4–/+) 9.b5 Nbd7 10.d4 ed4 11.Qd4 Bf3 (11...Re8 12.Rg3–/+) 12.Bf3=+ Ne5 (12...a6 13.ba6 Ra6 14.Be2=+) 13.Be2= c5 14.Qd2 Qb6 15.f4 Ned7 16.a4 (16.0–0–0 a6=) 16...a6 (16...Qa5!?=) 17.a5+= Qd8 18.b6 Nb6 (18...Re8!?+=) 19.ab6+/– Qb6 20.Ra2 Rfd8 (20...Rfe8!?+/–) 21.Nd5+– Nd5 22.Qd5 Bf8? (better is 22...Bh4 23.Kd2 Bf2+–) 23.f5 Qb4 (23...Qc6 24.Bc4 Qd5 25.Bd5 Bh6+–) 24.Kf1 Re8 (24...Bg7 25.fg6 Qb2 26.gf7 Kf8 27.Rb2 Rd7 28.Rb7 Rb7 29.Qb7 Ra7 30.Qb8 Ke7 31.Bc4 d5 32.Rg7 Rc7 33.f8Q Ke6 34.Bd5 Ke5 35.Qb2) 25.fg6 hg6 (25...Qe1 26.Ke1 Re6 27.gh7 Kh7 28.Qh5 Bh6 29.Qf7 Bg7 30.Qg7) 26.Rg6 Bg7 27.Rg7 Kf8 (27...Kh8 28.Qh5) 28.Qf7 1–0. market (1925) – albo (1825), GameColony.com, 2002.

6.h3 Nc6 7.b5 Nd4 8.Bc4 c6 9.0–0 Nf3 10.Qf3= cb5 11.Bb5 a6 12.Be2 b5 13.a3 Bb7 14.d3 Rc8 15.Na2? Rc2–+ 16.Bc3 d5 17.Bd1–/+ Rc3 18.Nc3 d4 19.Ne2=+ Bc8 20.Bb3= Be6 21.Bc2 g6 22.Ng3 Qc8 23.Rfc1 Qd7 24.a4 Ng4?? 25.ab5+= ab5 26.Bd1 Nh6 27.Nf1 f5 28.Nd2 fe4 29.Qe4 Nf7 30.Nf3 Bd5= 31.Ne5 Qe6–/+ 32.Bb3 Bb3–+ 33.Nf7 Qf7 34.f3 Bd5 35.Qd4 Bf6 (35...Bf6 36.Qc5 Ba1 37.Ra1 Qd7–+) 0–1. coloplayah (1930) – seguagio (1625), net–chess.com, 2005.

6.h3 d5 7.ed5 Bb4 8.Bc4 Re8 (8...e4 9.Ne5+=) 9.0–0 (better is 9.Qe2!?=) 9...e4+= 10.Nd4 c6 11.Re1 (11.a3 Ba5 12.d3 cd5 13.Bb3–/+) 11...cd5–/+ 12.Bb3 (12.Be2 a6–+) 12...Nc6–+ 13.Nc6 bc6 14.d3? (better is 14.a3 Ba5 15.Ne2–+) 14...Qa5 15.de4 (15.Na4 Be1 16.Qe1 Qe1 17.Re1 ed3 18.Re8 Ne8 19.cd3 Nc7–+) 15...Bc3 16.Bc3 Qc3 (16...Qc3 17.ed5 Bd7 18.dc6 Bc6–+) 0–1. Goebel,Martin (1805) – Schulz,Joerg (2400), RSX16D – Aprilturnier–1, 2008.

6.Bc4 Bg4

7.Be2 Nc6 8.b5 Nd4 9.Nd4 ed4 10.Nb1 Be6 11.f3 c5=+ 12.bc6 bc6 13.Bd4= c5 14.Be3 d5 15.0–0 d4 16.Bf2 c4 17.e5 Ne8 18.f4+= Rc8 19.c3 d3 20.Bf3 Bd5 21.Ba7+/– Qa5 22.Bd4 Bf3 23.Qf3 Bc5? 24.f5+– Bd4 25.cd4 Qb5 26.Nc3 Qb2 27.Qe3 Nc7 28.Rab1 Qa3 29.f6 Rfe8 30.fg7 Ne6 31.Qf2 Re7 32.Nd5 Ra7 33.Nf6 Kg7 34.Qg3 Kf8 35.Qg8 Ke7 36.Nd5 (36.Nd5 Kd7 37.Nb6 Kc6 38.Qc8 Rc7 39.Qe8 Kb7 40.Nc4 Ka7 41.Qb8 Ka6 42.Qb6#) 1–0. b4_player (2115) – noodles (1770), GameColony.com, 2002.

7.h3 Bf3 8.Qf3 Nc6 9.0–0 Nb4=+ 10.Rac1 Nc6 11.Nd5 Nd5 12.ed5 Nb8 13.Rb1 Nd7 14.Bc3 f5 15.Rb7+= Nc5 16.Rb5 Qd7? 17.Rc5!+– dc5 18.d6 Kh8 19.de7 Qe7 20.Re1 e4 21.d3 Qh4 22.Qe3 ed3 23.cd3 f4 24.Qe7 Qh5 25.Qg7# 1–0. pierre – txain, internet, 2009.

7.h3 Bf3 8.Qf3 Nc6 9.a3 Nd4 10.Qd3 c6 11.0–0 d5 12.Ba2 Qd7 13.f4 de4 14.Ne4 Ne4 15.Qe4 Ne6 16.fe5 Qd2 17.Rad1+– Qh6 18.Rd7 Bg5 19.Rb7 Rac8 20.Qf5 Be3 21.Kh1 Ng5 22.Rf3! Nf3 23.Rf7 Rf7 24.Qc8# 1–0. marekt (2195) – ironkosta (2065), ICC, 2003.

7.h3 Bh5 8.g4 Bg6 9.d3 Nbd7 10.Qd2 Nb6 11.Bb3 c6 12.0–0–0 Qc7 13.Rhe1 Rad8 (13...a5 14.ba5 Nc8 15.Rg1+=) 14.Qe2 h6 15.Nd2 Rfe8 16.Nc4 (16.h4!?=) 16...Nc4–/+ 17.Bc4 (17.dc4 d5 18.ed5 Bb4–/+) 17...d5 18.ed5 Nd5 (18...cd5 19.Bb5 d4 20.Be8 dc3–+ (worse is 20...Re8 21.Qe5 Qe5 22.Re5 dc3 23.Bc3+=)) 19.a3 Bg5 20.Kb1 f6 (20...Bf4 21.d4–/+) 21.Qf3= Bf7 22.Ne2 (22.d4 a5 23.b5 Rf8=) 22...Bf4 (22...b5 23.Bd5 cd5 24.d4–/+) 23.Qg2 (23.Nf4 Nf4 24.Bf7 Kf7=) 23...Nb6 (better is 23...a5!?–/+) 24.Bf7= Qf7 25.h4 f5 (25...Nd5 26.Qf3=) 26.Nc3 (better is 26.Nf4!? ef4 27.gf5+–) 26...fg4 27.Qg4 Qe6 28.Qe6 Re6 29.d4 Nc4+= 30.de5 Rd1 31.Rd1 Be5–/+ 32.Rd7 Nb2 33.Kb2+= Rf6 34.Re7 Bd4 35.Rd7 Rf4 36.h5 Bf6 37.Kb3+= Rf3 38.Rd3 Rd3 39.cd3= Bc3 40.Kc3 Kf7 41.Kd4 g6 42.hg6 Kg6 43.Ke4 Kg5 44.Kf3 h5 45.Kg3 h4 46.Kh3 Kf4 47.Kh4= Kf3 48.Kg5 Kf2 49.Kf5?? Ke3–+ 50.Ke5 Kd3 51.Kd6 Kc4 52.Kc7 Kb3 53.Kb7 Ka3 54.Ka7 Kb4 55.Kb6 c5 56.Kc6 c4 57.Kd5 c3 58.Kd4 c2 0–1. Zimmermann,Jasmin – Rozenfeld,Elisabeth, GER–chT U14 Girls, 2008.

7.h3= Bh5 8.g4 Bg6 9.d3 h6 10.Nh4 Bh7 11.Nf5 Nc6 12.a3 Bf5 13.gf5 a6 14.Rg1 Nd4 15.Nd5 c6 16.Ne7 Qe7+= 17.c3 Kh8?? 18.cd4+– d5 19.Bb3 de4? 20.de4 ed4 21.Qd4 Rad8 22.Qe3 Rd7 23.f3 Rg8 24.e5 Nd5 25.Qe4 Rc7 26.f6 Nf6 27.ef6 Qe4 28.fe4 g6 29.Rd1 Re8 30.Rg6! Re4 31.Kf2 Rf4 32.Kg3 Rf5 33.Rh6 (33.Rh6 Kg8 34.Rd8#) 1–0. kode (2345) – bar (1905), net–chess.com, 2008.

7.h3 Bh5 8.g4 Bg6 9.d3 h6 10.Nh4 Bh7 11.Nf5 Bf5 12.gf5 (12.ef5? d5 13.Bb3 Bb4–+) 12...c6 13.Qf3 d5 14.ed5 Bb4 15.dc6? (15.0–0 Re8 16.dc6 Nc6+=) 15...Nc6 White has new hanging pawns: c2+d3 (15...b5 16.Rg1 Qa5–/+ (16...bc4?! is clearly worse 17.a3 Bc5 18.0–0–0–/+)) 16.0–0–0 Nd4–/+ 17.Qe3 Qa5 18.Ne4 Ne4 19.de4 Rac8 Black threatens to win material: Rc8xc4 20.Bb3?? forfeits the clear win 20...Bc3 21.f6 Bb2 22.Kb2 Rc6 The pawn on c2 gets attacked 23.fg7 Rfc8 24.Rd4 ed4 25.Qd4 Qc3 26.Qc3 Rc3 27.Rg1 R3c6 28.f4 Rf6 29.e5 White wins space 29...Rf4 30.e6 White threatens to win material: e6xf7 30...Rc6?? 31.ef7 (31.ef7 Rf7 32.Bf7 Kf7 33.g8Q Kf6 34.Re1 Rb6 35.Kc1 Rc6 36.Qf8 Kg6 37.Rg1 Kh5 38.Qf3 Kh4 39.Qg4) 1–0. Karacsony,Istvan – Horvath,Viktoria (2165), HUN–chT2 Asztalos, 2003.

7.h3 Bh5 8.g4 Bg6 9.Qe2 d5 (9...c6 10.Bb3+=) 10.ed5 (10.Nd5 Nd5 11.Bd5 c6+/–) 10...e4 (10...Bb4!? 11.g5 Ne8+=) 11.Ne5= Bb4 12.Ng6 hg6 13.g5 (13.Qe3!?=) 13...Bc3+= 14.dc3 (14.Bc3 Nd5 15.Be5+= (15.Qe4?? Nc3 16.Qf4 Nd5 17.Bd5 Re8 18.Be4 Qd4–+)) 14...Nh5 (14...Nd5 15.Rd1 c6 16.Bd5 cd5 17.c4 Qa5 18.Qd2 Qd2 19.Kd2 dc4 20.Rhe1–/+) 15.0–0–0 (better is 15.Qe3!?+=) 15...Qg5+= 16.Kb1 Nd7 (16...Qf5!?+=) 17.Qe4= Nc5 (17...Nb6 18.Bb3=) 18.Qd4+= Na4 19.Rhg1 Qf6 20.d6 (20.Rge1 Rfe8=) 20...Nb2 21.Kb2 Qd4 (21...cd6 22.Qf6 Nf6 23.Rd6+=) 22.Rd4 Kh7 (better is 22...cd6 23.Rg6 Nf6=) 23.dc7 Rac8 24.Rd7 Kg8? (better is 24...Nf6 25.Re7 Ng8 26.Rf7 Rf7 27.Bf7 Rc7 28.Bg6 Kh6+/–) 25.Rg6 (25.Rgd1!? Kh7 26.Bf7 Kh6+–) 25...Nf6 26.Re7 Ne8+/– 27.Rg4 Rc7 28.Rge4 Rc8 29.Rb7?? Nd6= 30.Bd5 Ne4 31.Be4 Rb8 32.Ka3 Rb7+= 33.Bb7 Rb8 34.Bd5 Kf8 35.c4 Ke7 36.c5 f5 37.Ka4 Kd7 38.Ka5= Kc7 39.a4 Rb2 40.Bb3+= Kc6 41.Ka6 Kc5 42.Ka7 Rb1 43.a5 Rf1 44.Kb7 Re1+= 45.a6 Re7–/+ 46.Kc8 Kb6 47.Bc4?? Rc7–+ 48.Kb8 Rc4 49.a7 Re4 50.a8N 0–1. Dolejs,Dan E – Anderson,William, NZCCA TT2, 2003.

5.Nf3 Bg4

6.Bc4 0–0 7.0–0 Nc6 8.b5 Nd4 9.Be2 Ne2 10.Qe2 c6 11.bc6 bc6=+ 12.h3 Bh5 13.a4 Qa5 14.Ba3 Rfb8 15.Rfb1 h6 16.g4 Bg6=+ 17.Nh4 Bh7 18.Nf5 Bf5 19.ef5 Nd5–/+ 20.Nd5 cd5 21.c3 Qa4 22.Bb2?? Qc2–+ 23.Qd1 Rb2 (24.Rb2 Qb2–+) 0–1. Gapp,Wolfgang (1855) – Pocak,Edmund (1980), AUT–chT, 1997.

6.Bc4 Nbd7 7.h3= Bh5 8.0–0 0–0 9.Be2 a6 10.d4 Bg6 11.de5 Ne5 12.Ne5 de5=+ 13.b5 Ne4 14.ba6 Nc3 15.Bc3 ba6 16.Be5 Bd6 17.Bb2 Qe7 18.Re1 Qg5=+ 19.Qd4 Bf5 20.Bd3= Bh3 21.g3 Bg3 22.Kh1? Bh2?? 23.Rg1+– Bg1 24.Rg1 Bg2?? 25.Rg2 Qh5 26.Rh2 Qd1 27.Kg2 f6 28.Bh7 (28.Bh7 Kf7 29.Qd1+–; 28.Qd5 Rf7 29.Qa8 Rf8 30.Bc4 Qd5 31.Bd5 Kh8 32.Qf8#) 1–0. PolishPlayer – SINJOOR, internet, 1999.

6.Be2 0–0 7.0–0 d5 8.ed5 Nd5 (8...Bf3 9.Bf3 Bb4 10.Re1= (10.Qe2 Bc3 11.Bc3 Re8 12.Qc4 Nbd7 13.Rae1 Nb6 14.Qb3 Qd6) 10...Re8 11.Rb1 Nbd7 12.d3 Nb6 13.a3 Ba5 14.Re2 Qd7; 8...Bb4 9.Ne5 Be2 (9...Bc3 10.Bc3 Be2 11.Qe2 Re8 12.Rab1 Qd5 13.f4 b6 14.Rb5 c5) 10.Qe2 Nbd7 11.f4 Bc5 12.Kh1 Bd4 13.Qc4 Bc3 14.Qc3 Nd5) 9.Nd5+= (9.h3 Be6 (9...Bf5 10.Nd5 Qd5 11.Ne5 Nd7 12.Bc4 Qd6 13.Nd7 Bd7 14.a3 Qf4) 10.Nd5 Bd5 11.Ne5 f6 12.Nf3 Bb4 13.c3 Bd6 14.c4 Bf7; 9.b5 Nc3 10.Bc3 e4 11.Nd4 Bf6 12.Bg4 Bd4 13.Bf5 Qd5 14.Qg4 Bc3) 9...Qd5 10.Ne5 Be2 11.Qe2 Bb4 12.d4 (12.Qg4 f6 (12...Qd2? 13.Rfd1 Qc2 14.Nd3+–) 13.Qb4 fe5+= 14.Qb3 Qb3) 12...f6 13.Nd3 (13.Qc4 Qc4 14.Nc4 Re8) 13...Nc6 (13...Bd6 14.Rfe1 Nc6) 14.Nb4 (14.Nf4 Qd6) 14...Nb4 15.a3 (15.c4 Qc6=) 15...Rfe8 16.Qf3?? (better is 16.Qd2 Nc6 17.Rfe1=) 16...Qf3–+ 17.gf3 Nc2 18.Rac1 Re2 19.Rfd1 Rae8 20.a4 (20.d5 b5–+) 20...Ne1 21.Bc3 Nf3 22.Kg2 Nh4 23.Kg3 (23.Kf1 Ra2 24.a5 Ree2–+) 23...R8e4 24.f3 (24.f3 Nf5 25.Kh3 Rh4#) 0–1. Neumann,Frank (1635) – Matzen,Jan (1700), RSS7E schnell–56, 2010.

6.Be2 0–0 7.0–0 Qd7 8.b5 c6 9.a4 Qc7 10.d4 Nbd7 11.h3 Bf3 12.Bf3 ed4 13.Qd4 Ne5 14.Be2 Rad8 15.Qa7 c5? (better is 15...d5) 16.a5 Ra8 17.Qb6 Qc8 18.a6 ba6 19.Ra6 Ra6 20.ba6 Nfd7 21.Qb7 Qb7 22.ab7 Rb8 23.Ba6 Nc6 24.Nd5 Bd8 25.Bc3 Nb6 26.Rb1 Nd5 27.ed5 Ne7 28.Bc4 h6 29.Ra1 Kh7 30.Ra8 Bc7 31.Ba6 Nd5 32.Ba5 1–0. Wall,Bill – Guest1531438, playchess.com, 2012.

6.Be2 0–0 7.0–0 Nh5 8.Nd5 Qd7?? 9.Ne5!+– de5 10.Bg4 Qd6 11.Bh5 Nd7 12.c4 g6 13.c5 Qe6 14.Bg4 f5 15.Be2 Qc6 16.Ne7 Kg7 17.Nc6 bc6 18.Qa4 Rae8 19.Qa7 Nf6 20.Qc7 Kh6 21.Be5 fe4 22.f4! g5 23.Bf6 (23.Bf6 Rg8 24.fg5 Kg6 25.Bh5 Kh5 26.Qh7 Kg4 27.Qh3) 1–0. Klaus Behrmann – Papa Lazarou II, ChessWorld.net, 2004.

6.Be2 a6 =.

6.Be2 Nc6 7.a3 0–0 8.0–0 Bf3 9.Bf3 Nd4 10.d3 c6 11.Nb1 Nf3 12.Qf3 Qc7 13.Nd2 b5 14.Qd1 h6 15.Nf3 a5 16.h3 ab4 17.ab4 Qd7 18.Qd2 Nh5 19.Ra3 Nf4 20.Rfa1 Qb7 21.Ra8 Ra8 22.d4 Ra1 23.Ba1 Ng6 24.de5+/– Qc7 25.ed6 Qd6 26.Qd6 Bd6 27.g3 c5 28.bc5+/– Bc5 29.Kg2 b4 30.Ne5 Ne5 31.Be5 f6 32.Bb2 Kf7 33.f4 Ke6 34.f5 Kf7 35.Kf3 h5 36.g4 hg4 37.hg4 g6 38.fg6 Kg6 39.e5 fe5 40.Be5+– Be7 41.Ke4 Kf7? 42.Kf5 Bh4 43.g5 Be1 44.g6 Kg8 45.Ke6 Bc3?? 46.Bc3 bc3 47.Kd5 Kg7 48.Kd4 Kg6 49.Kc3 Kf6 50.Kd4 Ke6 51.Kc5 Kd7 52.Kb6 Kc8 53.c4 Kb8 54.Kc6 Kc8 55.c5 1–0. DanielMena – Skean Du, ChessWorld.net, 2007.

6.Be2 Nbd7 7.h3 Bh5 8.a3 0–0 9.g4 Bg6=+ 10.d3 h5 11.Ng5 Ng4 12.hg4+= (12.hg4 Bg5 13.gh5+=). alaamattar (2100) – szepy (1960), net–chess.com, 2005.

6.h3 Bh5 7.g4 Bg6=+ 8.d3 a5 9.b5 Nbd7 10.a4 Nc5 11.Bg2 Ne6 12.Ne2 Nd7 13.Nd2 Bg5 14.Nc4 Nf4 15.Nf4 Bf4 16.Bc3 b6 17.Bf3 Qh4 18.Bd2 Bd2 19.Qd2 h5 20.Ke2 Qe7 21.Ne3 Nc5 22.Nd5 Qd7 23.Rhg1 Ne6 24.c3 h4 25.Rge1 f6 26.Kf1 Bf7 27.Kg2 Nc5 28.Qe3 Bd5 29.ed5 Qe7 30.d4+= Nd7 31.Be4 g5 32.Bg6 Kf8 33.Qf3 Kg7 34.Be4 Kh6 35.Re3 Rae8 ˝–˝. Fernandez,Ang – Hernandez,Jorge, SOCIAL CIDA, 1988.

4.Nc3 Bg4

5.Be2= Qd7 6.Nd5 Be2 7.Nf6 gf6 8.Ne2 Qg4 9.Ng3+= Qd1 10.Rd1 Nc6 11.a3+/– 0–0–0 12.d4 Ne7 13.c4 Ng6 14.Nf5 ed4 15.Rd4 Ne5 16.f4 Nc6 17.Rd2 a6? 18.Bf6 Rg8 19.Bd8 Nd8 20.g3 Ne6 21.Ke2 Ng7 22.Nh6 Rh8 23.Nf7 Rg8 24.c5 Ne6 25.cd6 cd6 26.Nd6 Bd6 27.Rd6 Kc7 28.Re6 Rd8 29.Rc1 Kb8 30.Re7 Rc8 31.Rc8 Kc8 32.Rh7 1–0. kamret (2155) – dgeorge333, GameColony.com, 2003.

5.Be2 Be2 6.Ke2 d5 7.ed5 Bb4 –/+.

5.Be2 Be2 6.Qe2 c6 7.Nf3 Be7 8.0–0 Nbd7 9.a3 0–0 10.d4 ed4 11.Nd4 Ne5 12.f4 Ned7 13.Nf5 g6 14.Ne7 Qe7 15.Rae1 Rae8 16.e5 de5 17.fe5 Nd5 18.Nd5+/– cd5 19.Qb5 b6 20.Qd5 Qe6 21.c4 Qd5 22.cd5+– Rc8 23.Re2 Rfe8 24.b5 Rc4 25.Rf3 Rec8 26.Kf2 Rc2 27.Rfe3 Re2 28.Re2 Nc5 29.Ke3 Nb3 30.d6 Nc5 31.Rd2 Rd8 32.Bd4 Kg7 33.e6 Kf8 34.e7 Ke8 35.ed8R Kd8 36.Bc5 bc5 37.Rd5 Kd7 38.Rc5 Kd6 39.Rc6 Kd7 40.Rf6 Ke7 41.Ra6 f5 42.Ra7 Kd6 43.a4 Kc5 44.Rh7 g5 45.Rh5 f4 46.Ke4 Kb6 47.Rg5 f3 48.gf3 Ka5 49.h4 Kb6 50.h5. Paz01 – fishman, Internet, 2002.

5.Be2 Be2 6.Qe2 Nbd7 7.Nf3 Be7 8.0–0 0–0 9.d4 a5 10.a3 Re8 11.de5 de5 12.Rad1 Qc8 13.Nd5 Bf8 14.Nf6+/– Nf6 15.Rd2?? ab4–/+ 16.Be5 Ng4 17.Bf4 ba3–+ 18.c4 Ra6 19.Ra1 c5 20.Nh4 g6 21.h3 Ne5 22.Be5=+ Re5 23.Nf3 Re8 24.Rd3 Qa8 25.e5 Ra4 26.Nd2 Bg7–/+ 27.Re3 –/+. mwojo (1745) – supertimchan (2075), net–chess.com, 2004.

5.Be2= Be6 6.Nf3 Be7 7.d4 ed4 8.Nd4+= Bd7 9.b5 c6 10.a4 c5 11.Nf5 Bf5 12.ef5 Nbd7 13.0–0 0–0 14.a5 a6 15.b6 Ne5 16.f4 Nc6 17.g4 h6 18.g5 hg5 19.fg5 Nh7 20.g6 fg6 21.fg6+– Bh4 22.Qd5 Kh8 23.Rf8 Qf8 24.Qh5 Bf2 25.Kg2 (25.Kg2 Qg8 26.Kf2+–) 1–0. Netsurferdude – Conveyor, ChessWorld.net, 2005.

5.Be2= h5 6.Nd5 Nd5 7.ed5 Nd7 8.Bg4 hg4 9.Qg4 g6 10.Nf3+= Nf6 11.Qg3 Ne4 12.Qh3?? Rh3–+ 13.gh3 c5 14.bc5 Nc5 15.0–0–0 Qb6 16.Rhe1 Na4 17.Ba3 Rc8 18.c3 Qf2 19.Rf1 Qb6 20.Ng5 Be7 21.Rf7 Nc3! 22.Rdf1 Qb1 0–1. Dazzer – JimDog, ChessWorld.net, 2005.

5.Be2 h5 6.Nf3 a6 7.0–0 d5 8.ed5+/– Nd5 9.Ne5+– Bb4 10.Bg4 Nc3? 11.Bc3 Bc3 12.dc3 0–0 13.Bh3 Qd1 14.Rfd1 Re8 15.Rab1 Re5 16.Rb7 Rc5? 17.g3 Rc3 18.Rd8 Kh7 19.Rdb8 Rb8 20.Rb8 Rc2 21.Bf5 g6 22.Bc2 c5 23.Rc8 f5 24.Rc5 Kh6 25.Ra5 Kg5 26.Ra6 h4 27.gh4 Kh4 28.Rg6 Kh5 29.Bf5 Kh4 30.a4 Kh5 31.a5 Kh4 32.a6 Kh5 33.a7 (33.a7 Kh4 34.a8Q Kh5 35.Qh8#; 33.f4 Kh4 34.Rh6#) 1–0. Neumann,Frank (1650) – Witt,Monika (1605), remoteschach.de, 2008.

5.f3 Be6 6.d4 ed4 7.Qd4 Nc6 8.Bb5 Bd7 9.Bc6 Bc6 10.0–0–0 Be7 11.b5 Bd7 12.e5 de5 13.Qe5 0–0 14.Nd5 Bd6 15.Nf6 Qf6 16.Qf6 gf6 17.a4 a6 18.c4 ab5=+ 19.ab5 Be6 20.Bf6 Bc4 21.Rd4 Be6 ˝–˝. justpawn – schnitzly, playchess.de, 2003.

5.f3 Be6=+ 6.d4 ed4 7.Qd4 Be7 =+.

5.f3 Be6=+ 6.Qe2 c6 7.0–0–0 b5–/+ 8.d4 a5 9.Ba3? d5 10.ed5 Nd5 11.Nb5? ab4 12.Bb2 Ra5 13.c4 Qg5?? 14.Qd2=+ Nf4?? 15.Nc7+/– Kd7 16.Ne6 Ke6? 17.d5! cd5 18.cd5?? Rd5?? 19.Bc4+– Qd8? 20.g3 Ng6 21.Bd5 Kf6 22.Be5! Ne5 23.Qf4 Kg6 24.Be4 Kh5 25.g4 Ng4 26.fg4 Kh4 27.Nf3 Kh3 28.Qg3# 1–0. Englund,Jukka – Tikkala,Pentti, corr FIN–ch I2 qual, 1973.

4.Nc3 g6

5.Bb5 Bd7 6.Bd7 Nbd7 +=.

5.Bc4 Nc6 6.a3 Bg4 7.f3 Bd7 8.Nge2 Bg7 9.d4 0–0 10.0–0 ed4 11.Nd4 Nd4 12.Qd4 Ng4 13.Qd3 Ne5 14.Qe2 Nc4 15.Qc4 Be6 16.Qd3 Qg5 17.f4 Qh4 18.Rab1 c6 19.Ne2 (worse is 19.Qd6 Rfd8 20.Qc7 Rd2–+) 19...Bb2 20.Rb2 d5 21.e5 Bf5 22.Qe3 Rfe8 23.Ng3 Bd7 24.f5 gf5 25.Nf5 Bf5 26.Rf5 Re6 27.Rb3 Rg6 28.Qf2 Qf2 29.Kf2 Re8 30.Re3 Kg7 31.Kf3 Re7 32.h3 b6 33.c3 h6 34.g3 Rge6 35.Kf4 c5 36.Rd3 Rd7 37.g4 cb4 38.cb4 Rc6 39.h4 Rc1 40.Kg3 Rg1 41.Kf3 Rh1 42.Kg3 Rg1 43.Kf3 Ra1 44.Kg3 Rc7 45.Rff3 Rg1 46.Kh3 Rh1 ˝–˝. Kovacevic,Boz (1820) – Stojanovic,Nad (2025), XXIII Belgrade Trophy, 2010.

5.d4 Nbd7 6.Nf3 Bg7 7.Bc4 0–0 8.d5 Nb6 9.Bb3 Bg4 10.h3 Bf3 11.Qf3 Qd7 12.a4 c6 13.a5+/– Nc8 14.dc6 bc6 15.Ba4 Ne7 16.0–0 Qc7 17.Rad1 d5 18.ed5 cd5 19.Nb5+= Qb8 20.Qc3 Ne4 21.Qc7 Nf5 22.Rd5+/– Qc7 23.Nc7+– Ne7?? 24.Rd7 Nf5 25.Na8 Ra8 26.Bc6 Rc8 27.Be4 (27.Be4 Bf8 28.Ra7 Bb4 29.a6+–) 1–0. Skoecz,Horst – Rutmann,Ulrich, Dortmund, 2006.

5.Nf3 Bg4 6.Be2 Bg7 7.0–0 0–0 8.d3 Nc6 9.a3 Qd7 10.d4 ed4–/+ 11.Nd4 Be2 12.Nce2 Ne4 13.Qd3 Nf6 14.Nb5 a6 15.Nbd4 Nd4 16.Bd4 Rfe8 17.Nf4 Re7 18.c4 Rd8 19.Nd5 Nd5–/+ 20.cd5 Bd4 21.Qd4 Re5 22.g3 Qf5 23.Rac1 Rd5 24.Qa7 c5 25.bc5 dc5 26.Qb7 Rd2 27.Qa6=+ h5 28.Qa5+= Qg4 29.Qc5 h4 30.Qe3 hg3 31.Qg3 Qd4 ˝–˝. Neumann,Frank (1650) – Goebel,Martin (1805), RSS7E schnell–31, 2008.

5.f4 Bg7 6.Nf3 ef4=+ 7.Nd5 0–0 8.Bf6 Bf6 9.c3 Re8 10.Bd3 Bf5 11.Qc2=+ Bh4 12.Kf1 Be6 13.Nf4 c5 14.Ne6 Re6 15.g3 Bf6= 16.b5 Nd7 17.Bc4= Re7 18.d4 Rc8–/+ 19.d5 Qa5 20.Rc1 Nb6 21.Nd2 Nc4 22.Nc4 Qb5 23.Qe2 Qa6 24.Rc2 Rce8 25.Nd2 Qa4 26.Rc1 Bg5 27.Kf2 Bd2 28.Qd2 Qe4 29.Rhe1 Qf5 (29...Qf5 30.Kg1 Re1 31.Re1 Re1 32.Qe1 Qd5–+) 0–1. Keroack,P – Le Bon,J, corr, 1976.

5.b5 Bg7

6.Bc4 a6 7.a4 Nbd7 8.Nf3 Nc5 9.ba6 0–0 10.ab7 Bb7 11.d3 d5 12.Ba3.

6.Nf3 a6 7.a4 Nbd7 8.Bc4 Nc5 9.ba6 0–0 10.Ba3 Na6 11.0–0 Nc5 12.Qe2.

6.Nf3 a6 7.a4 Nbd7 8.Bc4 Nc5 9.Qe2 ab5 10.ab5 Ra1 11.Ba1 Bh6 12.0–0.

6.Nf3 0–0

7.Bc4 a6 8.a4 Nbd7 9.0–0 ab5 10.ab5 Ra1 11.Qa1 Qe7 12.h3.

7.Be2 a6 8.a4 ab5 9.ab5 Ra1 10.Qa1 Nbd7 11.0–0 Nc5 12.d3 Bd7 13.Qa3 Qa8 (13...Ne6!?=) 14.Qb4 b6 15.Nd2 (15.Ra1 Qb7+=) 15...Qb7 (15...Qa5 16.Qa5 ba5 17.Ra1=) 16.Nc4 (16.f4 ef4 17.Rf4 Ra8+=) 16...Ra8 (16...Ne6!?=) 17.f4+/– Bf8 18.Nd1 (18.fe5 de5 19.Rf6 Be6=) 18...Ng4 (18...d5!? 19.ed5 Nd3=) 19.h3 Nh6 20.fe5 de5 21.Qd2 Bb5 22.Ne5 Bg7 23.c4 Be8 24.Nf3 Ra2 25.Qc1 Bb2 26.Nb2 Qa6?? (better is 26...Kg7+/–) 27.Qh6+– Rb2 (27...Ne6 28.Ng5 Ng5 29.Qg5 b5+–) 28.Ng5 f5 (28...Rb1 29.Rb1 Qa4+–) 29.Qh7 (29.ef5 Nd3 30.Qh7 Kf8 31.Ne6) 29...Kf8+– 30.ef5 (30.ef5 b5 31.fg6 Qf6 32.Rf6 Bf7 33.Qf7) 1–0. Skrzypczak,Michal (1985) – Sobolewski,Piotr, L.K.S. Piast Srem Poland, 2010.

7.Be2 a6 8.a4 Nbd7 9.0–0 Nc5 10.d3 Qe7 11.Qd2 Bd7 12.Rfb1.

7.Be2 a6 8.a4 Nbd7 9.0–0 Nc5 10.d3 Qe7 11.Qd2 Bd7 12.Qe3.

7.Be2 Nbd7 8.0–0 a6 9.a4 Nc5 10.d3 b6 11.Re1 a5 12.Nd2 Re8 13.Bf3 Bb7 14.Nc4 Rb8 15.Ba3 Ne6 16.Ne2 Ba8 17.Bb2 Nc5 18.Ng3 Qd7 19.Qb1 Bb7 20.Qa2 Ne6 21.Rad1 Rbd8 22.Qa1 Qc8 23.h4 h5 24.c3 Nc5 25.d4 ed4 26.cd4 (worse is 26.Rd4 d5 27.ed5 Nb3–+) 26...Nce4 27.d5 Ng3 (27...Bd5? 28.Ne4 Be4 29.Be4 Re4 30.Re4 Ne4 31.Bg7+–) 28.fg3 (28.Bf6!? Bf6 29.Qf6 Re1 30.Re1=) 28...Re1+= 29.Re1 Ne8?? (better is 29...Re8+=) 30.Re8+/– Re8 31.Bg7 Qf5 32.Bh8 Kf8 33.Kh2 Bd5?? (better is 33...g5 34.hg5 Qg5+/–) 34.Qg7+– Ke7 35.Ne3 (35.Ne3 Qf3 36.gf3+–) 1–0. Skrzypczak,Michal (1950) – Sobolewski,Piotr, Mistrzostwa Sekcji L.K.S. Piast Srem Poland, 2009.

5.Bc4 Bg7

6.d3 0–0 7.Nf3 Nc6 8.b5 (8.a3 a5 9.b5 Nd4 10.h3 Be6 11.Be6 Ne6 12.0–0 Re8 13.Qd2; 8.0–0 Nb4 9.h3 Qe7 10.Qd2 Be6 11.Be6 fe6 12.Ba3 c5 13.Rab1) 8...Na5 9.Bb3 a6 10.0–0 (10.ba6 Ra6 11.0–0 Nb3 (11...Qe7 12.Qd2 Bd7 13.Nd5) 12.ab3 Ra1 13.Qa1 Re8=) 10...Bd7 (10...ab5 11.Nb5 c6 12.Nc3+= Nh5 13.Qd2) 11.ba6= Ra6 12.Nd2 (12.Qd2 Qe7 13.Nd5) 12...Nb3 (12...Rb6 13.Qe2) 13.ab3 Ra1 14.Qa1 ˝–˝. Popovkin,Petro – Chichkin,V (2285), ch–Kyiv Men, Kyiv UKR, 2008.

6.d3 0–0 7.Nf3 Be6 8.Be6 fe6 'Black has new doubled pawns: e5+e6' 9.Ne2 Nh5 10.Qd2 Nd7 11.0–0 Qe7 12.a4 Rf7 13.c4 Raf8 14.Bc1 h6 'Consolidates g5' 15.Ne1 Qh4 16.Qe3 'White threatens to win material: Qe3xa7' 16...Ndf6 '??' 'weakening the position' (better is 16...Nf4= would save the game) 17.Nf3 '+–' 17...Ng4 18.Nh4 Ne3 19.Be3 g5 20.Nf3 Nf4 21.Nf4 ef4 22.Bd4 e5 23.Bb2 (23.Ba7?! is much weaker 23...Ra8+/–) 1–0. Woerlein,Rene – Bader,Gerd (2065), Ostalb–ch Schwaebisch Gmuend, 1998.

6.d4 ed4–/+ 7.Qd4 Nc6 8.Bb5 0–0 9.Bc6 bc6 10.Qc4 Ne4! 11.Qc6?? Bb7! 12.Qb7 Nc3 13.Kf1 Rb8 14.Qc6? Rb6 15.Qf3–/+ Ne4! 16.Qe4 Bb2 17.Rb1 Re8 18.Qf4 Qe7 19.Qd2–/+ Qe5 20.Ne2 Ba3 21.Nd4 a5 22.b5 Bb4 23.c3–/+ Qe4 24.Rd1 Bc5 25.a4 Bd4 26.cd4 c6 27.f3 Qe3 28.Qe3 (28.Qe3 Re3 29.bc6 Rc6 30.Kf2–/+). mtrold1 – opponent, internet live, 2001.

6.Nge2 0–0 7.0–0 Nc6 8.a3 a6 9.Ng3 b5 10.Ba2 Nd4 11.Nce2 Ne2 12.Qe2 Qe7 13.Rac1 Be6 14.c4 c6 15.d3 Rfc8 16.Rc2 a5 17.ba5 Ra5 18.Bc1 bc4 19.Bc4 Bc4 20.Rc4 c5 21.h3 Rb8 22.Qd1 Qa7 23.Ne2 Ne8 24.h4 h5 25.g4 hg4–/+ 26.Ng3 Nf6 27.Kg2 Qd7 28.Rh1 d5 29.ed5 Qd5 30.Kh2 Rd8 31.Qb3 Qd3–+ 32.Rc3 Qd7 33.Be3 Bf8?? (better is 33...Qc6–+). Lehtonen,Artto – Kainulainen,Pentti, FIN–chT Division–C, 1998.

6.Nge2 0–0 7.0–0 Re8 8.f4 ef4 9.Nf4 c6 (9...Ne4? 10.Bf7 Kh8 11.Be8 Qe8 12.Qe2+–) 10.Nd3 Be6 11.Be6 Re6 12.Qf3 Nbd7 13.g4 Qb6 14.Kg2 Rf8 15.a3 Qd4 e4 seems the pivot of the position 16.Rae1 Ne5 17.Ne5 Qe5 (17...Re5? 18.d3 Qb6 19.Na4+/–) 18.h4 h5 19.g5 Ng4 20.Rh1 Qd4 21.d3 Qb6 22.Nd1 Bb2 23.Nb2 f6 (23...f5 24.Rhf1+=) 24.Rhf1= Ree8 (24...Qd4 25.Nd1=) 25.Nc4 Qd8 26.Qg3 fg5 27.Qd6 Qd6 28.Nd6 Rf1 29.Kf1 Rf8 30.Kg1 gh4 31.e5 h3–+ 32.e6 h2?? 33.Kh1+– Nf6 34.e7 Ra8 35.e8Q Ne8 36.Re8 Re8 37.Ne8 Kf7 38.Nd6 Ke6 39.Nb7 g5 40.Kh2 Kf5 41.Nd6 Kf4 42.a4 g4 43.b5 cb5 44.ab5 g3 45.Kg2 h4 46.Ne4 Kg4 47.Ng3! hg3 48.c4 Kf4 49.c5 1–0. Benoit,Hugues (2110) – Taburet,H (1750), Syre Memorial op, 1995.

6.Nge2 c6 7.a4 0–0 8.0–0 Nbd7 9.a5 b5 10.Bb3 a6 11.f4 c5 12.fe5 de5 13.Ba3 c4 14.Ba2 Bb7 15.d3 Ng4 16.Bc1 Qe7 (16...Qh4 17.h3 cd3 18.cd3= (worse is 18.hg4 de2 19.Qe2 Nf6–/+; worse is 18.Qd3 Ngf6=)) 17.Rb1 (17.dc4 bc4 18.Bc4 Rad8+=) 17...Rad8 18.h3 Ngf6 19.Be3 Qe6 20.Ng3 h6 21.Qc1 Kh7 22.dc4 bc4 23.Qe1 Nb8? (better is 23...Rc8!?+=) 24.Bc5 Rg8 25.Qe2 Nc6 (better is 25...Rd4+–) 26.Bc4 Qe8 27.Ba6 Nd4 28.Bd4 Ba6 29.Qa6 ed4 30.Nce2 Ne4 31.Qd3 f5 32.a6 Nc3 33.Nc3 dc3+= 34.Qf3 Bd4 35.Kh1 Qb5 36.Ne2 Qa6 37.Nd4 Rd4 38.Qc3 Rc4 39.Qd2 Qc8 40.Rf2 Qc7 41.Re2 Rd8 42.Qe1 Rd7 43.Rb2 Rcd4 44.Rb1 Rc4 45.b5 Rc2 46.b6 Re2 47.Qe2 Qb7 48.Qe6?? Rd2–/+ 49.Rg1 Rb2 50.h4 Rb6 51.Qe8 Rb3 52.Kh2 Rb4 53.g3 Qc7 54.Kh3 Re4 55.Qa8 Qd7 56.Kh2 Qc7 57.Kh3 g5 58.Ra1 g4 59.Kh2 Re2 60.Kh1 Re7 61.Rb1?? Qg3–+ 62.Qf8 Qh4 63.Kg1 Qg3 64.Kh1 Qf3 65.Kg1 Qe3 66.Kh2 Qf4 67.Kg1 Qd4 68.Kh2 Re2 (68...Re2 69.Kh1 Qe4 70.Kg1 Qb1) 0–1. Zittro,Carl – Nagel,Ralf, SVR–op, 2007.

6.Nf3 0–0 7.Ng5 Nbd7 8.Nd5? c6 9.Ne3 b5 10.Bb3 Bb7 11.0–0 d5 12.ed5= cd5 13.Nd5?? Nd5–+ 14.Bd5 Bd5 15.Qg4 f5 16.Qh4 h6 17.Be5 Ne5 18.Nf3 Nf3 (18...Nf3 19.gf3 Qh4 20.Rfe1 Qg5 21.Kf1 Bf3 22.Red1 Qg2 23.Ke1 Rae8#) 0–1. Nautiluschess – abducted, ICS blitz, 2000.

6.Nf3 Nc6 =.

6.h3 c6 7.Nge2 Qe7 8.0–0+= Nbd7 9.d4 Nb6 10.Bb3 Be6 11.d5 cd5 12.ed5 Bd7 13.Ng3 0–0 14.a4 Rac8 15.Qe2 Bf5 16.Nf5 gf5+= 17.Qd3 e4 18.Qe2 Nfd7 19.a5 Na8 20.Qe3 a6 21.f4 Nf6 22.Ne2 Nc7 23.c4 Nfd5+= 24.Qg3 Nf6 25.Nd4 Qd7 26.Ba4 Qd8 27.Nf5 Ne6 28.Rad1 Nh5+/– 29.Qg4 Nf6 30.Nh6 Kh8 31.Nf7! Rf7 32.Qe6 Re7 33.Qd6 Qd6 34.Rd6 Nh5 35.Bg7 Kg7 36.f5 Nf6 37.c5 e3 38.Re6 Kf7? 39.Bb3 Re6 40.Be6 (40…Ke7 41.Bc8+–) 1–0. Gadea,FS – Vizcaino,JA, Albacete–ch Primera, 1994.

6.h3 Nc6 7.a3 =.

5.Nf3 Bg7

6.b5 0–0 7.a4 Nbd7 8.d4 (better is 8.Bc4!?=) 8...ed4–/+ 9.Nd4 Re8 10.f3 d5 0–1. Botcher,P – Dopper,Johan C, Grund Malyszko Memorial, 1995.

6.Bb5 c6 7.Be2 0–0 8.0–0 b5 9.a4+= ba4 10.Ra4 Bb7 11.Re1 a5 12.ba5 Ra5 13.Ra5 Qa5 14.d4 ed4= 15.Nd4 c5 16.Nb3 Qc7 17.Nb5 Qd7? 18.Nd6+– Ne4 19.Bg7 Kg7 20.Nb7 Qb7 21.Bf3 f5 22.Nc5! Qf7 23.Ne4 fe4 24.Qd4 Kg8 25.Be4 Nd7 26.Bd5 1–0. b4_player (2230) – Oriovac (1760), GameColony.com, 2003.

6.Bb5 c6 7.Be2 0–0 8.0–0 d5!? 9.ed5 e4 =.

6.Bb5 c6 7.Be2 0–0 8.0–0 Nbd7 9.Re1 Re8 10.a3 d5 11.ed5 cd5 12.Bb5 a6 13.Bd7+= Nd7 14.Nd5 b5 15.d3 Bb7 16.Nc3 Qc7 17.Ra2 Rac8 18.Nd2 Qc6 19.f3 f5 20.Ndb1 Nb6 21.Qe2 Re7 22.Ra1 Rce8 23.Qf2 g5 24.Qg3 h6= 25.Ra2 Nd7 26.Re2 Nf6 27.a4 Nh5 28.Qf2 Nf4 29.Re1 g4 30.ab5 ab5 31.Qg3? Kh7 32.Nd2? Bf6 33.Ra7–/+ Rg7 34.Kf1 Qb6 35.Qf2 Qc6 36.g3 Nh3 37.Qc5 gf3 38.Qc6 Bc6 39.Ra6 Rc8 40.Nf3 f4 41.Ne5+/– fg3 42.hg3 Be5 43.Re5+– Rg3 44.Re7 Kg8 45.Ne2 Rf3 46.Ke1 Rf7 47.Re6 Rfc7 48.Rh6 Bg2 1–0. themonkey (2135) – kaoto (1945), GameColony.com, 2002.

6.Bb5 c6 7.Be2 0–0 8.0–0 Re8 9.b5 Nbd7 10.Rb1 Nc5 11.bc6 bc6 12.d3 Ne6 13.Bc1 d5 14.ed5 cd5 15.Bd2 d4 16.Ne4 Nd5 17.Nfg5 Nef4 18.g3 Ne2–/+ 19.Qe2 f5 20.Nc5 Qd6 21.Nb3 Ba6 22.Rfe1 e4 23.Ba5 Rac8 24.Qd1 e3 25.Qe2 Bb7 26.Rec1 Bh6 27.h4 Bg5 28.hg5 f4 29.g4?? f3!–+ 30.Qf1 ef2 31.Qf2 Re2 32.Be1 Rf2 0–1. Johannes,Jan – Dopper,Johan, TKM/SF/2, 2001.

6.Bb5 Bd7 7.Bd7 Nbd7 8.0–0 0–0 9.Qe2 Nb6 10.a4 a5 11.b5 c5 12.Rfe1 Qc8 13.Rad1 Qe6 14.d3 Rad8 15.Ng5 Qe7 16.Qf3 d5 17.ed5= Nbd5 18.Qg3+= Nf4?? 19.Qf4!!+– Nh5 20.Qe3 f6 21.Nge4 Nf4 22.Qc5 Qe6 23.b6 Qg4 24.Ng3 Rb8 25.Qa5 Bh6 26.d4 ed4 27.Nd5 Rbe8 28.Nf6! Rf6 29.Re8 Bf8 30.Rde1 Re6 31.R8e6 Ne6 32.Qd5 Kf7 33.h3 +–. lucya (2150) – zmdbbza, GameColony.com, 2002.

6.Bc4 0–0 7.0–0 c6 8.d3 Qb6 9.a3 Nbd7 10.Qd2 a5 11.Bb3 ab4 12.Na4 Qc7 13.ab4 b5 14.Nc3 Bb7 15.h3 Ra1 16.Ra1 Ra8 17.Ra8 Ba8 18.Qd1 h6 19.Qa1 (19.Qa1 Bb7 20.Qa5+=). gtate (2520) – realxadrez (2420), net–chess.com, 2007.

6.Bc4 0–0 7.0–0 Nc6 8.a3 Nd4 9.Nd4 ed4 10.Ne2 Ne4 11.Bd4 Bd4 12.Nd4 Qf6 13.c3 c6 14.Bd3 d5 15.Be4+= de4 16.Qe1 Re8 17.f3+/– Qe5 18.fe4 Qe4 19.Qe4 Re4+= 20.Rae1 ˝–˝. Woschkat,Karl_Heinz – Vodep,Otto, IECG, 1997.

6.Bc4 0–0 7.0–0 Nc6 8.b5 Nd4 9.Nd4 ed4 10.Ne2 Bg4 11.f3+/– Bh5 12.Bd4+– c6 13.g4 Ng4 14.fg4 Bg4 15.Bg7 Kg7 16.bc6 Qg5 17.Kh1 Bf3?? 18.Rf3 1–0. b4_player (2120) – abecednik (1875), GameColony.com, 2002.

6.Bc4 0–0 7.b5 c6 8.0–0 a6 9.a4 ab5 10.ab5 Ra1 11.Qa1 Bd7 12.Qa4+= Qe8 13.Ba3 Ne4 14.Ne4 cb5 15.Qa8 bc4 16.Nd6 Qe6 17.Ng5 Qg4 18.Nde4 (18.Nde4 Rd8 19.Qb7=+). gtate (2520) – realxadrez (2420), net–chess.com, 2007.

6.Bc4 Nc6 7.a3 =.

6.Bc4 Be6 7.Be6 fe6 8.0–0 0–0 9.Re1 Nbd7 10.d4 ed4 11.Nd4 Qe7 12.Nf3 Rae8 13.a3 Nb6 14.e5 Nfd5 (14...Nc4 15.ef6 Qf6 16.Nd5 Qb2 17.Nc7 Qa1 18.Qa1 Ba1 19.Ne8 Re8 20.Ra1+=) 15.Nd5 Nd5 16.Rb1 g5 17.ed6 cd6 18.Bg7 Qg7 19.Qd4 Nc3 (19...g4!? 20.Qg7 Kg7=) 20.Qg7+/– (20.Qd6?! Nb1 21.Rb1 Qf6=) 20...Kg7 21.Rb3 Nb5 22.Ng5 e5 23.Rh3 h6 24.Ne4 d5 25.Nd2 e4 26.Ree3 (better is 26.c4!? dc4 27.Nc4+–) 26...Rf6 27.Rh5 Rd6 28.g3 Nc7 29.c4 b6? 30.cd5+– Nd5 31.Re4 Re4 32.Ne4 Rd7 33.f4 Ne3 34.Kf2 Nc2 35.a4 Nb4 36.a5 ba5 37.Ra5 Nc6 38.Ra6 Nb4 39.Ra4 Nd3 40.Kf3 Ne1 41.Kg4 Nc2 42.Nc3 Ne3 43.Kh3 Nf5 44.Ra6 h5 45.Nb5+– h4 46.Ra7 Ra7 47.Na7 hg3 48.hg3 Kf6 49.Nc6 Kg6 50.Ne5 Kf6 51.g4 Nd4 52.Kh4 Ne2 53.Nd7 Ke6? 54.Nc5 Kf6 55.g5 Kg6 56.Nd3 Nd4 57.Kg4 Nc2 58.f5 Kg7 59.f6 Kf8 60.Kh5 Nd4 61.g6 Ne6 62.Kh6 Kg8 63.Ne5 Nd8 64.f7 (64.f7 Nf7 65.gf7 Kf8 66.Kg6 Ke7 67.Kg7 Ke6 68.Nf3 Kd5 69.f8Q Ke4 70.Ng5 Kd3 71.Qd6 Kc4 72.Ne6 Kc3 73.Kf6 Kb3 74.Qc5 Kb2 75.Nd4 Ka1 76.Qc3 Ka2 77.Qb3 Ka1 78.Nc2) 1–0. Jokmin,Alex – Molina,Vicente Andres, SN–2009–0–00193, 2009.

6.d4 ed4 7.Nd4 0–0 8.Bc4 c6 9.0–0 Nbd7 10.Re1 Ne5 11.Bb3 Kh8 12.h3 Nh5 13.Qe2 Nf4=+ 14.Qe3 Bh6 15.Qg3 Nh5 16.Qh2 Bf4 17.g3 Bh6 18.Qg2 Bg7 19.a4 Bd7 20.Ba3 Be6 21.Be6 fe6 22.Ne6 Qf6 23.b5?? Qe6 24.bc6 Nf3 25.Kf1 Ne1 26.Re1 Bc3 27.Re3 Bd4 28.Re2 bc6 29.e5 Rf2! 30.Rf2 Bf2 31.Kf2 Rf8 32.Kg1 Qe5 33.c4 Qa1 34.Kh2 Qa3 0–1. Neumann,Frank (1650) – Schulz,Peter (1845), RSS7E–70 remoteschach.de, 2007.

6.d4 ed4 7.Nd4 0–0 8.Bd3 c5 9.bc5 dc5 10.Nb3 c4 11.Bc4 Ne4 12.Qd8 Rd8 13.Ne4 Bb2 14.Rb1 Bg7 15.0–0 Nc6=+ 16.Rfe1 Bf5 17.Nbd2 b6 18.Rbc1 Rac8 19.c3 Ne5 20.Ba6 Nd3 21.Bd3 Rd3 22.Nf3 Be6 23.Re2 Bg4 24.c4 Bh6 25.Rce1 Bf3 26.gf3 Kg7 27.Rc2 f5 28.Ng3 Kf6 29.Ne2 Rf3 30.Rd1–/+ Rc7 31.Rd5 Bg7 32.c5 Ke6 33.Rd6 Ke7 34.Rd5 bc5 35.Rdc5 Rc5 36.Rc5 Ra3 37.Rc7 Kf8 38.Rc8 Kf7 39.Rc7 Kf6 40.Nc3 Bf8 41.Rc8 Kg7 42.h4 a6 43.Nd5 Kf7 44.h5 gh5 45.Rc6 Ra2 46.Rf6 Kg7 47.Rf5 a5 48.Rh5 a4 49.Rg5 Kf7 50.Rf5 Ke6 51.Rf8 Kd5 52.Kg2 a3 53.Ra8 Kc4 54.Rc8 Kb3 55.Rb8 Kc2 56.Rc8 Kb1 57.Ra8 Kc2?? (better is 57...Kb2–+) ˝–˝. Woschkat,Karl_Heinz – Priebe,Ralf, corr, 1997.

6.d4 Bg4 7.de5+/– de5 8.Qd8+– Kd8 9.Ne5 Be6 10.Bc4 Bc4 11.Nc4 Re8 12.0–0–0 Nbd7 13.f3 Kc8 14.Kb1 a6+/– 15.a4 Re6 16.Nd5 Kb8? 17.Nf6+– Nf6 18.e5 Nh5 19.g4 Nf4 20.Rd7 Rc6 21.Na5 Ne6 22.Nc6 bc6 23.Rf7 Kb7 24.Re7 Bf8 25.Re6 Bb4 26.Rf6 Re8 27.e6 a5 28.Ka2 Bd6 29.Bc3 Kb6 30.Kb3 c5 31.f4 Be7 32.Rf7 Bd6 33.Re1 Kc6 34.h4 h5 35.gh5 gh5 36.Kc4 Be7 37.Ba5 Bd6 38.e7 Kd7 39.f5 Re7 40.Ree7 Be7 41.f6 (41.f6 Ke6 42.Re7 Kf6 43.Re8+–) 1–0. mtrc – fefer, internet, 2002.

6.Be2 Be6 7.0–0 (7.d4 ed4 8.Nd4 0–0=) 7...0–0 (7...Nc6 8.Ng5=) 8.d4+= Nbd7 (8...Qe7 9.d5 Bc8 10.Qd3+=) 9.d5 Bg4 10.Nd2 (10.h3!? Bf3 11.Bf3+/– (worse is 11.gf3 a5–/+)) 10...Be2= 11.Qe2 Ne8 (11...Nb6 12.a4=) 12.Qd3 (12.a4 a5 13.ba5 Ra5+=) 12...f5 (12...Nef6 13.Nb3+=) 13.ef5 (13.f3 Qh4+/–) 13...Rf5 14.Ne2 (better is 14.Nde4!?+/–) 14...e4 15.Ne4? (better is 15.Qb3 Bb2 16.Qb2=) 15...Bb2–+ 16.Rab1 (16.Rae1 a5 17.Rb1 Bg7–+) 16...Bg7 17.N2g3 (17.N4g3 Rf7–+) 17...Rf8 18.f4 Nb6 19.Ng5 Qf6 20.Ne6 Rf7 21.Rf2? Qc3 22.Rf3 Qd3 23.Rd3 Nf6 24.c4 Nc4 25.Rc1 Nb6 26.a3 Nfd5 27.Ng7 Kg7 28.Ne2 Re8 29.Rc2 Re2! 30.Re2 Nf4 31.Red2 Nd3 32.Rd3 Kf6 33.Kf1 Ke5 34.Ke2 Rf4 35.g3 Rf7 36.h4 d5 37.Ke3 Nc4 38.Ke2 Ke4 39.a4 Rf6 40.a5 d4 41.Rd1 Ne3 42.Rd2 Rc6 43.Ke1 Rc1 44.Ke2 Rc2 45.Rc2 Nc2 46.b5 d3 47.Kd2 Nd4 48.b6 ab6 49.ab6 cb6 50.g4 Nf3 51.Kd1 Ke3 52.g5 d2 53.h5 Kd3 54.hg6 Ne5 55.gh7 Nc4 56.h8Q Ne3# 0–1. Kirpichenko,Katsiaryna – Jussupow,Ekaterina, EYCC G10, Halkidiki GRE, 2001.

6.Be2 0–0

7.0–0 Bg4 8.b5 Nbd7 9.Ng5 Be2 10.Qe2 h6 11.Nh3 Nc5 12.Rab1 g5 13.f3 Ne6 14.Qe3 Nh5 15.a4 Nhf4 16.Nf4 ef4 17.Qd3 a6 18.Nd5 Bb2 19.Rb2 ab5 20.ab5 c6 21.bc6 bc6 22.Nb6 Rb8 23.Rfb1 Qc7 24.c3 Rfd8 25.Qf1 Qa7 26.d4 d5 27.ed5 cd5 28.Rb4 Nc7 29.Ra1 Qb6 30.Rb6 Rb6 31.h4 Nb5 32.hg5+– hg5 33.Qd3 Kg7 34.Qf5 f6 35.Kf2 Rbd6? 36.c4! dc4 37.Rh1 Nd4 38.Rh7 Kf8 39.Qg6 (39.Qg6 R8d7 40.Rh8 Ke7 41.Qe8#) 1–0. marekt – shepljm, ChessWorld.net, 2003.

7.h3 Be6 8.0–0 Nbd7 9.d4 ed4 10.Nd4 (worse is 10.Qd4 a5 11.a3 ab4 12.ab4 Ra1 13.Ra1 Nd5 14.Qg7 Kg7 15.ed5 Bf5+=) 10...Re8 11.a3 a6 12.Re1 d5 13.Ne6 fe6 14.Bf3 Nb6 15.ed5 ed5 16.Re8 Ne8 17.Na4 (17.Qe1 c6+=) 17...c6 18.Bg7 Ng7 19.Nc5 Qc7 20.a4 Nd7 (better is 20...Re8=) 21.Bd5!+/– Kh8 (21...cd5 22.Qd5 Double attack (22.Qd5 Decoy)) 22.Nd7 Qd7 23.Bf3 Qe8 24.Qf1 Rb8 25.Re1 Qf7 26.Qd3 Re8 27.Rd1 Nf5 28.b5 cb5 29.ab5 a5? (better is 29...Qf6+–) 30.Qc3 Qg7 31.Qa5 (better is 31.Qg7 Kg7 32.g4+–) 31...Rc8?? (31...Nd4+–) 32.Qb6 (32.Rd8!? Rd8 33.Qd8 Qg8 34.Qg8 Kg8 35.Bb7 Kf7+–) 32...Rb8 (32...Qe7+–) 33.g4 Nh6 34.Kg2 Qe7 35.Qd4 Qg7 36.Qd6 Rc8 37.Qe6 Rc2 38.Rd8 Ng8 39.Bd5 h6 40.Rg8 Qg8 41.Qg8# 1–0. Skrzypczak,Michal (1980) – Czerwinski,Tymon, Wielkopolska Liga Seniorow Poland, 2011.

7.0–0 Nc6

8.a3 Nd4 9.d3 Ne2 10.Qe2 Nh5 11.Qe3 f5 12.h3 fe4 13.de4 Be6 14.Rfd1 Nf4 15.Nd5 Bd5 16.ed5 Qf6 17.Kh2 Qf5 18.Ne1 Bh6 19.Qf3 Rf7 20.Qg4 e4 21.Qf5 Rf5 22.c4 Ne2 23.f3 Re8 24.Ra2 Bf4 25.Kh1 Ng3 26.Kh2 e3 27.Kg1 e2 28.Rd3 a6 29.Bd4 h5 30.a4 Rf7 31.Bf2 Nf1 32.b5 a5 33.Rb3 b6 34.Nd3 Bh2 35.Kh1 Bg3 36.Kg1 Rfe7 37.Rb1 Bf2 38.Kf2 Ne3 39.Re1 Nd1 40.Kg1 Re3 41.Nf4 Nc3 42.Raa1 Kf7 43.Ne6 R8e6 44.de6 Ke6 45.Kf2 Rd3 46.h4 Ke5 47.Rac1 Kd4 48.Rc2 Kc5 49.g4 Kb4 50.Ree2 Ne2 51.Ke2 Rd4 52.Ke3 Rd1 53.gh5 gh5 54.f4 Re1 55.Kd4 Rf1 56.Ke3 Ka4 (56...Ka4 57.Rb2 Rh1–+) 0–1. Preuss,Guenter – Dopper,Johan, corr 3GMM–F, 2001.

8.a3 Nd4 9.d3 Ne2 10.Ne2 Qe7 11.c4 b6 12.h3 c5 13.b5 h6 14.Ne1 Nh7 15.Nc3 Be6 16.Nc2 f5 17.ef5 gf5 18.Ne3 Qf7 19.f3 Nf6 20.g4 f4 21.Ng2 Rad8 22.Qe2 Rfe8 23.Rac1 Bc8 24.Ne4 d5 25.cd5 Qd5 26.Rfd1 Qf7 27.Kh2 Ne4 28.de4 Qb3 29.Nh4 Kf7 30.Nf5= Bf5 31.ef5 Bf6 32.h4 Rg8 33.Rd8 Rd8 34.Rc3 Qd1 35.Qc4?? Kg7–+ 36.Bc1 Qe1 37.Qb3 Rd1 38.Qd1 Qd1 39.Kg2 Qe2 40.Kh3 h5 (40...h5 41.Rd3 Qf2 42.Bf4 ef4 43.Rd7 Kf8 44.Rd8 Bd8 45.g5 Qg3#; 40...Qf2 41.Bf4 ef4 42.Rc5 Qg3#) 0–1. Tej,Yahia – Wilkin,Alain, Mauricie, 1984.

8.a3 Nd4 9.d3 Ne2 10.Ne2 Nh5 11.d4 Bg4 12.Qd3 f5.

8.b5 Nd4 9.a4 Ne2 10.Qe2 Nd7 11.Qc4 Nb6. Dopper.

8.b5 Ne7 9.Ne1 d5= 10.ed5 Nfd5 11.Nd5 Nd5 12.c4 Nf4=+ 13.Bf3 f5 14.g3 Nh3 15.Kh1 e4 16.Bg7 Kg7 17.Bg2 f4–/+ 18.Bh3 Bh3 19.Rg1 fg3 20.Rg3 Be6 21.Re3 Rf2 22.d3 Rf1 (22...Rf1 23.Kg2 Qf6–+) 0–1. Grehl,Siegfried – Dopper,Johan, corr SOK–92–78, 1992.

4.c4 Ne4

5.d3 Nf6 6.Nd2 Be7 7.Be2 c6 8.Ngf3 0–0 9.0–0 d5 10.a3=+ d4 11.Ne5= Nbd7 12.Bd4+/– Bd6 13.Nef3 Re8 14.Re1 Ne5 15.c5 Bc7 16.Nb3 Neg4 17.h3+/– Ne5 18.Bf1 Nh5?? 19.Be5 Bh3 20.Bc7 Qc7 21.gh3 Qf4 22.Bg2 Qf5 23.Qc2 Nf4 24.Nbd4 Nh3 25.Kf1 Nf4 26.Nf5 1–0. coloplayah (1990) – andreih, net–chess.com, 2005.

5.Ne2 Bf5 6.Nbc3 Nc3 7.Nc3 Nd7 8.Qf3=+ Be6 9.Be2 Nf6 10.0–0 Bg4 11.Qb7= Be2 12.Rfe1?? Bc4?? 13.Qc6= Nd7 14.Qc4 Be7 15.Nd5 Rc8 16.Qa6 0–0?? 17.Qa7 Nf6 18.Ne7 Qe7 19.a4 Rb8 20.b5 Nd5 21.Qa5?? Nb6 22.Qc3+/– Nd5 23.Qg3 Nb4 24.Re4 Nd5+= 25.f4 Nf4?? 26.Rf4+– f6 27.Rc4 Rfc8 28.Ba3 Qf7 29.Rac1 Qe6 30.Rc7 Rc7 31.Rc7 g6 32.Rc6 Qd7 33.Qb3 Kg7 34.Rd6 Qf5 35.Qe6 Qb1 36.Kf2 Qf5 37.Qf5 gf5 38.Rd7 Kg6 39.Bc5 f4 40.b6 Rc8 41.Rc7 Rd8 42.Ke2 Ra8 43.b7 (43.b7 Rb8 44.Ba7 Rb7 45.Rb7+–) 1–0. gtate (1900) – wmalone (2025), net–chess.com, 2004.

4.Bc4 Nbd7

5.Nc3 Be7 6.Nf3 Nb6 7.Bb3 h6 8.0–0 0–0 9.Re1 c6 10.b5 cb5 11.Nb5 a6 12.Nc3 Bg4 13.h3 Bh5 14.g4 Bg6 15.Nh4 Bh7 16.Nf5 Bf5 17.ef5 Rc8 18.d3 d5 19.Re5 Bd6 20.Re1 d4 21.Ne4 Ne4 22.de4 Re8 23.Bd4 Be5 24.Bb6 Qb6 25.Qd5 Ba1 26.Qf7 Kh8 27.Ra1 Rf8 28.Qd5 Rcd8 29.Qe6 Qe6 30.fe6 Rfe8 31.e5 Rd2 32.Bc4 b5 33.Bb3 Re2 34.c4 Re5 35.cb5 ab5 36.Rd1 R5e6 37.Be6 Re6 38.Rd8 Kh7 39.Rb8 Ra6 40.Rb5 Ra2 41.g5 Ra1 42.Kg2 hg5 43.Rg5 Kh6 44.h4 g6 45.f4 Ra2 46.Kg3 Ra3 47.Kg4 Ra6 48.h5 gh5 49.Rh5 Kg7 50.Rg5 Kf7 51.Rf5 Ke7 52.Re5 Kd6 53.Rh5 Kc6 54.Rh6 (time, 1–0). Nautiluschess – Brinkonov, ICS blitz, 2001.

5.d4 ed4 6.Qd4=+ Be7 7.Nd2 0–0 8.Ngf3 b6 9.e5 de5–/+ 10.Ne5 Ne5 11.Qe5 Bb4=+ 12.0–0–0 Bd6 13.Qg5 h6 14.Qg6 Be7?? 15.Ne4+– (15.Ne4 Be6 16.Rd8 fg6 17.Be6 Kh7 18.Ra8 Ra8 19.Re1+–) 1–0. rabelloenter (2035) – ccoutlaw (2175), net–chess.com, 2006.

4.Bc4 Ne4

5.Nf3 Nc6 6.Bd5 Nf6 7.Bc6 bc6 8.0–0 Bg4 9.h3 Bh5 10.d3 Be7 11.Nbd2 0–0 12.Ne4 Ne4 13.de4 Bf6 14.Bc1 d5 15.ed5 cd5 16.Rb1 c6 17.a3 e4 18.Qd2 ef3 19.gf3 Bf3 20.Kh2 Qd6 21.Qf4 Be5 22.h4 Bf4 23.Bf4 Qf4 24.Kh3 Qg4 25.Kh2 Qg2# 0–1. Nautiluschess – tasath, ICS blitz, 2001.

5.Nf3 d5 6.Bb3 f6 (6...Bb4 7.Ne5 0–0–/+) 7.Ne5 (Better is 7.d3!? Nd6 8.Bd5–/+) 7...fe5–+ 8.Qh5 g6?? (Better is 8...Ke7 9.Qe5 Be6–+) 9.Qe5+– Qe7 10.Qe7 Be7 11.Bh8 c6 12.0–0 Bf5 13.f3 Nd6 14.Be5 Nd7 15.Bd6 Bd6 16.g4 Be6 17.d4 Bb4+/– 18.a3 Bd6 19.Nd2 Bf4 20.Rf2 Kf7 21.c4 Be3= 22.Raf1 Bd4–/+ 23.cd5 cd5 24.Bc2 Rc8–+ 25.Nb3 Bf2 26.Rf2 Ne5 27.Nd4 Nc4 28.a4 Bd7 29.h3 Ne3 30.Bb3 Rc1 31.Kh2 Nc4 32.Rc2 Rc2–+ 33.Bc2 a5 34.Nb5 Bb5 35.ab5 Nb6 36.Kg3 a4 37.Kf4 Ke6 38.Ke3 a3 39.Bb3 Nc4 40.Kd4 Nd2 41.Ba2? Nf3–+ 42.Ke3 Ng5 43.Kd4 Nf3 44.Ke3 Ne5 45.Kd4 Nc4 46.Bc4 dc4 0–1. b4_player (1875) – Stormy22 (2185), GameColony.com, 2002.

5.Nf3 Bg4 6.h3 Bh5 7.g4 Bg6 8.d3 Nf6 9.Nh4 d5 10.Bb5 c6 11.Ba4 Bb4 12.Bc3 Qa5 13.Bb3 Bc3 14.Nc3 Qc3 15.Ke2 e4 16.Ng6 fg6 17.Qd2 ed3 18.Qd3 Qd3 19.Kd3 Ne4 20.Rhe1 0–0 21.Re3 Nf2 22.Ke2 Na6 23.Re7 Nh3 24.Rd1 Rae8 25.Re8 Re8 26.Kf3 Ng5 27.Kf4 Ne6 28.Ke5 Nec5 29.Kd6 Nb3 30.ab3 h5 31.gh5 gh5 32.Rh1 g6 33.Rg1 Kh7 34.Kd7 Re2 35.Kc8 b5 36.Kb7 Nc5 37.Kc6 Rc2 38.Kd5 Nb3 39.Ke5 a5 40.Rf1 a4 41.Kf4 a3 42.Kg5 Rc5 43.Kf6 a2 0–1. guest1488 – guest1139, ICC, 1999.

5.Qh5 Qf6 6.Qf3 Qf3 7.Nf3 Be7 8.0–0 0–0 9.Nc3 Bf5 10.d3 Nc3 11.Bc3 Nd7 12.Nh4 Bh4 13.f4 ef4 14.Rf4 Be6 15.Rh4 d5 16.Bb3 c5 17.b5 a6 18.a4 d4 19.Be6 fe6 20.Bb2 1–0. Ogeid – Chiquita, playchess.de, 2002.

5.Qh5 g6 6.Qf3 Ng5 7.Qd5 c6 8.Qa5 Qa5–+ 9.ba5 Be6 10.Na3 Nd7 11.f4 d5 12.fg5 dc4 13.Nf3 c3 14.dc3 Bc5 15.Rd1 Ba2 16.c4 Bb4 17.Ke2 Ba3 18.Ba3 Bc4 19.Ke3 0–0–0–+ 20.Bd6 Rhe8 21.Nd2 Bd5 22.Rhf1 c5 23.Ne4 Bc4 24.Rf2 b6 25.Rfd2 Re6 26.Rf2=+ Ree8 27.Rfd2 Re6 28.Rf2=+ ba5 29.Rf7= a4 30.Ra1 Bb5 31.Be7 Re8 32.Nd6 Kc7?? 33.Ne8+– Kb8 34.Nd6 e4 35.Nb5 Ne5 36.Bd6 Kc8 37.Be5 Re5 38.Na7 Kd8 39.Nc6 (39.Nc6 Kc8 40.Ra4 Re7 41.Re7 h6 42.Ra8#) 1–0. pierre_d – paddy, ChessWorld.net, 2005.

4.Bc4 Be6

5.Be6 fe6 6.Nc3 Nc6 7.Nf3 Be7 8.0–0 h6 9.Bc1 0–0 10.d4 ed4 11.Nd4 Nd4 12.Qd4 b6 13.Qe3 Ng4 14.Qg3 h5 15.h3 Bh4 16.Qd3 Bf2 17.Kh1 Qh4 18.Rf2 Nf2 19.Kg1 Nd3 0–1. Nautiluschess – Byron, ICS blitz, 2000.

5.Be6 fe6 6.Ne2 Ne4 7.d3 Nf6 8.Nd2 Be7–/+ 9.0–0 0–0 10.d4 ed4 11.Bd4 e5 12.Bb2 Kh8 13.c4 a5 14.ba5 Ra5 15.Bc3 Ra8 16.f4 ef4 17.Nf4=+ Qd7 18.Nd5 Nd5 19.cd5 Rf1 20.Qf1 Qe8 21.Qf3 Na6 22.Qg3 Bf6=+ 23.Bf6 gf6 24.Kf2? Qg6 25.Qg6 hg6 26.Re1? Nc5 27.Ne4? Nd3 (27...Nd3 28.Ke3 Ne1–+) 0–1. oracleinshadows (1725) – tomy (2260), net–chess.com, 2006.

4.Bc4 Qe7

5.Nc3= Be6 6.Bb3 g6 7.Nge2 Nbd7 8.0–0 h5 9.d4 Bh6? 10.d5+– Bg4 11.f3 Be3 12.Kh1 h4 13.Qd3 h3 14.g3 Bf3 15.Rf3 Ng4 16.Raf1 f6 17.Re3 Ne3 18.Qe3 g5 19.g4 1–0. Sawamura,Tetsushi – Harashima,Nobuaki, JPN op3 email, 2001.

5.d3 Be6 6.Nd2 Bc4 7.Nc4 Nbd7 8.a3 Qe6 9.Ne2 Be7 10.0–0 0–0 11.f4= ef4? 12.Nf4 Qg4+/– 13.Nd5 Nd5?? 14.Qg4+– Ne3 15.Ne3 Bf6 16.Rf6 (16…Ne5 17.Be5 de5 18.Nf5+–) 1–0. zobec – jones662, Live Game Caissa's Web, 2004.

4.Bc4 Be7

5.Nc3 0–0 6.Nd5 c6 7.Nf6= Bf6 8.Qf3 Be6 9.Be6= fe6 10.Qb3 Qe7 11.d4 ed4–/+ 12.Nf3 c5 13.0–0 Kh8 14.bc5= dc5 15.e5+– Bg5 16.c3?? dc3 17.Bc3= b6 18.Rad1 Nc6 19.Rd6 Rac8 20.Re6+– Qd8 21.h3?? Rf3 22.gf3 Nd4 23.Bd4+/– Qd4 24.Rd1 Qh4 25.Qb5 h6? 26.Re8+– Re8 27.Qe8 Kh7 28.Rd7?? Qh3?? 29.Qf7+– Qd7 30.Qd7 Bf4 31.e6 (31...Bg5 32.Qa7+–; 31.Qf5 Kg8 32.Qf4 b5 33.e6 a5 34.e7 Kh7 35.Qf5 g6 36.Qf7 Kh8 37.e8Q#) 1–0. kilmer49 – luuon, Caissa's Web, 2004.

5.d3 0–0 6.b5 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Be6 10.Be6= fe6 11.Nf3 Nbd7 12.0–0 c6 13.bc6 bc6 14.Nbd2 Qc7 15.Ng5 Nc5 16.f4 ef4 17.Rf4 h6 18.Nh3 d5 19.Qe2?? e5?? 20.Rf5? Nd3 21.Qd3 Qa7–+ 22.Bd4 ed4 23.ed5 Nd5 24.Rf8 Bf8 25.Nf2 Ne3 26.h3 Qa1 27.Nf1 c5 28.Ne4 c4 29.Qe2 Qc1 30.Kf2 Nf1 31.Qf1 Qe3# 0–1. pumpkin (2370) – kode (2270), net–chess.com, 2007.

5.d3 0–0 6.Ne2 c5 7.0–0 Nc6 8.f4 a6 9.f5 b5 10.Bb3 Bd7 11.Ng3 a5 12.c3 cb4 13.cb4 Nb4 14.a3 Nc6 15.Nh5 Qb6 16.Kh1 Rac8 17.g4? Nd4 18.Bd4 Qd4 19.Nf6 Bf6 20.h4?? Qa1 21.g5 Be7 22.f6 gf6 23.gf6 Bf6 24.Rf6 Kh8 25.h5 Rg8 26.Rf7 Rg7 27.Qf1 Rf7 28.Bf7 Rf8?? 29.Qf6 1–0. slavisa11 – pauly, Live Game Caissa's Web, 2004.

5.d3 c6 6.Bb3 Qc7 7.f4 ef4=+ 8.Qf3 Qb6 9.Qf4 Qb4 10.Bc3 Qb5 11.Nf3 Nbd7 12.0–0 0–0 13.Kh1 Nh5 14.Qd2 d5 15.a4 Qc5 16.Na3 a6 17.e5 g6 18.Bd4 Qb4 19.c3? Qa5?? 20.Nc2 c5 21.Be3 d4 22.cd4+/– Qd2 23.Nd2 cd4 24.Bd4 Bc5? 25.e6+– Bd4 26.Nd4 Nc5?? 27.e7+– Nb3 28.ef8Q (28.ef8Q Kf8 29.N2b3+–; 28.ef8B?! Nd2 29.Rf2 Kf8 30.Rd2 Bg4+/–; 28.ef8N?! Nd4 29.Nh7 Kh7 30.Rf7 Kh6=; 28.N2b3?! Re8 29.Rae1 b6+/–) 1–0. Milewski,Adam – Romanski,Dariusz, Olsztyn Poland, 1990.

5.Nf3 0–0 6.0–0 Ne4 7.Bd3 Nf6 8.c4 Bg4 9.Nc3 c6 10.Ne4 d5 11.cd5 Nd5 12.Bc4 Nf6 13.Nf6 Bf6 14.Bd3 Nd7 15.h3 Bh5 16.g4 Bg6 17.Bg6 hg6 18.h4 e4 19.Ng5 Bg5 20.hg5 Qg5 21.d4 Nf6 22.f4 Qg4 23.Qg4 Ng4 24.Rf2 e3 25.Rg2 Nf2 26.d5 cd5 27.Re1 Rfe8 28.Bd4 Nd3 29.Re3 Nf4 30.Re8 Re8 31.Rf2 Ne2 32.Kg2 Nd4 33.Rd2 Nc6 34.Rd5 Nb4 35.Rb5 Na2 36.Rb7 Nc3 37.Ra7 Ne4 38.Kf3 f5 39.Kf4 Nd6 40.Kg5 Nf7 41.Kg6 Re6 42.Kf5 Rf6 43.Kg4 Kh7 44.Ra5 Kg6 45.Ra7 Re6 46.Kf4 Ne5 47.Ra5 Nd3 48.Kg4 Ne5 49.Kf4 Nd3 50.Kg4 Rf6 51.Rg5 Kf7 52.Rd5 g6 53.Rd3 Rd6 54.Rd6 Kg7 55.Rd7 Kf6 56.Rd8 Kf7 57.Rd6 Ke7 58.Rg6 Kf7 59.Kf5 Ke7 60.Ra6 Kd7 61.Ke5 Kc7 62.Kd5 Kb7 63.Re6 Kc7 64.Kc5 Kd7 65.Rd6 Ke7 66.Rb6 Kf7 67.Kd6 Kf6 68.Kc7 Ke5 69.Rd6 Ke4 70.Kc6 Ke5 71.Kc5 Ke4 72.Rd5 Kf4 73.Rd4 Ke5 74.Rd5 Ke4 75.Rd4 Kf5 76.Rd5 Ke4 77.Rd4 Ke3 78.Kc4 (Nautiluschess ran out of time and stuytown has no material to mate) +–. Nautiluschess – stuytown, ICS blitz, 2001.

5.Nf3 Bg4 6.h3 Bh5 7.0–0 a6 8.g4 Bg6 9.Ng5 0–0 10.Nc3 h6 11.Nf3 Ne4 12.Ne4 Be4 13.Re1 Bf3 14.Qf3 Bh4 15.Bd3 Nc6 16.Qf5 g6 17.Qf3 Qf6 18.Qf6 Bf6 19.c4 Nb4 20.Bb1 Bg7 21.Ba3 Nc6 22.Be4 Rab8 23.Rab1 f5 24.gf5 gf5 25.Bc6 bc6 26.Kh2 f4 27.c5 Rb1 28.Rb1 Rd8 29.cd6 cd6 30.Rb6 Bf8 31.Ra6 c5 32.Ra7 d5 33.Bb2 d4 34.f3 Rb8 35.Ba3 Rb1 36.Ra8 Kf7 37.Rc8 Ra1 38.Bc5 Bc5 39.Rc5 Ke6 40.Ra5 h5 41.Ra6 Kf5 42.Rh6 Kg5 43.Re6 Kf5 44.Rh6 Kg5 45.Re6 Kf5 46.Rh6 Kg5 47.Re6 ˝–˝. Nautiluschess – WillK, ICS blitz, 2001.

5.Nf3 h6 6.0–0 0–0 7.d4 Bg4 8.de5 de5 9.Be5 Qd1 10.Rd1 Bf3 11.gf3 Nh5 12.Be2 Bf6 13.Bf6 Nf6 14.Nd2 Nc6 15.a3 Nd4 16.Bc4 Nc2 17.Ra2 Nd4 18.Nb3 Nf3 19.Kg2 Ne5 20.Bd5 c6 21.Bc6 Nc6 22.e5 Ne5 23.Re1 Nd3 24.Re7 b6 25.Rd2 Nf4 26.Kf3 N6d5 27.Rd7 Rad8 28.Ra7 g5 29.Rc2 f5 30.Nd4 h5 31.Nc6 Rd6 32.Ne7 Ne7 33.Re7 Rd4 34.Rcc7 g4 35.Kg3 h4 36.Kh4 Ng6 37.Kg5 Ne7 38.Re7 Rd6 39.a4 Rff6 40.Re8 Kf7 41.Rh8 Rd4 42.Rh7 Ke6 43.a5 ba5 44.b5 Rb4 45.b6 Rb6 46.Ra7 Ke5 47.Ra5 Ke4 48.Ra4 Kf3 49.Ra3 Kf2 50.Ra2 Kf3 51.Ra3 Kg2 52.Ra2 Kh3 53.Kf4 Rb4 54.Kg5 Rfb6 55.Kf5 R6b5 56.Kf6 Rb2 57.Ra3 R5b3 58.Ra5 Rh2 59.Rh5 Kg3 60.Rg5 Rf3 61.Kg6 Ra2 62.Re5 Ra6 63.Kg5 Kh3 64.Re4 g3 65.Rh4 Kg2 66.Rg4 Ra5 67.Kg6 Rff5 68.Kh6 Kh3 69.Rg6 g2 70.Kg7 Rg5 71.Kf6 g1Q 72.Rg5 Qg5 73.Ke6 Re5 74.Kd6 Qe7 75.Kc6 Rc5 76.Kb6 Qc7 77.Ka6 Ra5# 0–1. guest945 – dunkan, ICC, 1999.

4.Bc4 Bg4

5.f3 Bd7 6.Ne2 Nc6 7.Ng3 Nb4 8.0–0 Be7 9.Ba3 Nc6 10.Nc3 Nd4 11.Nce2 Ne2 12.Qe2 0–0 13.d4 ed4 14.Bd3 c5 15.e5 de5 16.Ne4 b6 17.Bc1 Qc7 18.f4 Ne4 19.Be4 Bc6 20.Bc6 Qc6 21.fe5 Rfe8 22.Qg4 Qd5 23.Bh6 g6 24.Qf4 Bf8 25.Bf8 Kf8 26.Qh6 Kg8 27.Rf2 Re5 28.Raf1 f5 29.Qg5 Rae8 30.Qf6 Qe6 31.Qg5 b5 32.Qh6 a6 33.Rf3 c4 34.Rh3 Re7 35.Qc1 Re2 36.Rhf3 Re3 37.Rf4 Re2 38.R4f3 b4 39.a3 a5 40.ab4 ab4 41.Rf4 d3 42.cd3 cd3 43.Rd4 Qe3 44.Rf2 Qc1 0–1. guest1050 – guest232, ICS blitz, 2001.

5.f3 Bh5 6.g4 Bg6 7.Nh3 h6 8.g5 Nfd7 9.gh6 Rh6 10.Nf2 Qh4 11.Nc3 f5 12.Qe2 fe4 13.fe4 Nc6 14.0–0–0 Nd4 15.Qe1 Bh5 16.Be2 Be2 17.Ne2 Qg4 18.Nd4 Qg6 19.Nb5 Kf7 20.Nc7 Rc8 21.Nd5 Nf6 22.Qf1 Ne4 23.Ne4 Kg8 24.Rg1 Qe4 25.Nf6 Rf6 26.Qe1 Qe1 27.Rde1 a6 28.d4 Re8 29.de5 de5 30.Be5 Rfe6 31.Rg5 Be7 32.Rg7 Kh8 33.Rg6 Bf6 34.Bf6 Kh7 35.Rg7 Kh6 36.Re6 Re6 37.Bc3 Rg6 38.Rb7 Rg1 39.Kb2 Rg2 40.Ra7 Rh2 41.Ra6 Kg5 42.a4 Kf4 43.a5 Rh7 44.Rd6 Ke3 45.a6 Ra7 46.Bd4 Ke4 47.Ba7 Ke5 48.Rd1 Ke4 49.Bd4 Kf3 50.a7 Ke2 51.a8Q Kd1 52.Qh1 Ke2 53.Qg2 Kd1 54.Qf2 (stalemate) ˝–˝. Nautiluschess – gais, ICS blitz, 2001.

4.d3 a6

5.a3 Bd7 6.Nf3 Nc6 7.Be2 Be7 8.0–0 0–0 9.Nbd2 h6 10.c3 Bg4 11.d4+= ed4 12.cd4 Nd7 13.d5+/– Bf3 14.Nf3 Nce5 15.Ne5 de5 16.Rc1 Bd6 17.Rc3 Nf6 18.Bd3 Qe7 19.Bc1 Rab8 20.Bc2 Rfd8+= 21.Rg3 Kh8 22.Qf3 Rg8 23.Qf5 Qd7 24.Qd7 Nd7 25.f4 ef4+= 26.Bf4 Bf4 27.Rf4 f6 28.Bb3 Rge8 29.Bc2 Ne5= 30.Rf1 Re7 31.Rd1 Rd8 32.Rc3 Red7 33.Rc1 c6 34.dc6 Nc6 35.Bb3 Nd4=+ 36.Re1 Nb5–/+ 37.Rce3 Na3 38.Ba4 Rd3 39.Rd3 Rd3 40.Re2? Rd4 41.e5 fe5 42.Re5 Rb4 43.Re8 Kh7 44.Bd7 Kg6 45.Rb8 b6 46.Be8 Kf6 47.Bc6 a5 48.Rf8 Ke7 49.Rg8 Kf7 50.Bd5 Kg6 51.Re8 Rf4 52.Re6 Rf6 53.Re3 Nb5 54.Rg3 Kh7 55.Be4 g6 56.Rb3 Nd4 57.Re3 Re6 58.g4 Kg7 59.h4 g5 60.h5 Nf3! 61.Kg2 Nd2 0–1. Eigenmann,Peter – Duda,Karl Heinz (1950), Schleswig Holstein–ch Seniors op, 2007.

5.Be2 d5 6.a3 =+.

5.Nf3 Nbd7 =+.

5.Nf3 Be7 6.Be2 =+.

5.Nf3 Bg4 6.Be2= Nc6 7.a3 Be7 8.0–0 Qc8 9.Nbd2 b5 10.c4 0–0 11.h3 Bh5 12.d4 ed4 13.cb5 ab5 14.Bb5 Ne5 15.Bd4 Nf3 16.Nf3 c6 17.Bd3+/– Rd8 18.a4 c5+= 19.Bc3 c4 20.Bc2 d5=+ 21.ed5 Nd5 22.Qd4 Bf6 23.Ne5 Nb4 24.Bh7+= Kh8 25.Qe4 Qe6 26.Bf5+/– Qd5 27.g4+– Qe4 28.Be4 Be5 29.Be5 Bg6 30.Ba8 Ra8 31.a5 Nd3 32.Bd4 Nf4 33.Kh2 Rd8 34.Be3 Nd5 35.a6 c3 36.Rfd1 c2 37.Rd5! Rd5 38.a7 Rd1 39.a8Q (39.a8Q Kh7 40.Kg3+–) 1–0. Wall,Bill – BlueKnight, internet, 2004.

5.Be2 Nc6

6.a3= Be7 7.Nf3 =.

6.a3= g6 7.Nf3 Bg7 8.Nbd2 Nh5 9.0–0 Nf4 10.c4 0–0 11.b5 Nb8 12.a4 Nd7 13.Nb3 Qe7 14.Re1 Ne2 15.Qe2 Nf6 16.d4 Nh5 17.de5+= Nf4 18.Qe3 de5? 19.Ba3+/– Qf6 20.Bf8+– Bf8 21.Rad1 Bh6 22.Qc5?? Bg4 23.Qe5+/– Qe5 24.Ne5 Bd1 25.Rd1 ab5 26.ab5 Bg7 27.Nf3 Ra4 28.Rd8 Bf8 29.g3 Ne6 30.Rb8 Rc4 31.Nfd2 Rc2 32.f4 Nc5 33.e5 Nb3 34.Nb3+= b6 35.Nd4 Rc4 36.e6 Kg7= 37.Nc6 fe6 38.Rd8 Bd6 39.Kg2 Rc2=+ 40.Kh3 Rd2 41.Rd7= Kg8 42.Rd8 Kg7 43.Rd7 Kf6 44.Ne5+= Kf5 45.Nc6 h5 (45...g5 46.fg5 e5 47.Rh7=) ˝–˝. Stankovski,Marin – Ivanov,Ivan, BUL–chT Plovdiv, 2003.

6.c3 =+.

6.Nf3 Nb4 7.Nbd2 –/+.

6.Nf3 h6 7.Nc3 Nb4=+ 8.a3 Nc6 9.Rb1 Bg4 10.Ne5? Be2 11.Nc6 bc6?? 12.Ne2+/– Be7 13.Bd4 c5 14.Bc3 0–0 15.Ng3 Qd7 16.Rb7 Rab8 17.Qb1+/– Rb7 18.Qb7 Qc8 19.Qc8 Rc8 20.Nf5 Bd8 21.g3 Rb8+= 22.0–0 Kh7 23.f4 g6 24.Ne3 c6 25.f5 d5 26.fg6 fg6?? 27.Bf6+– Bf6 28.Rf6 de4 29.de4 Re8 30.Rf7 Kg8 31.Rf4 g5 32.Rf6 Re4 33.Nf5 Rc4 34.Nd6 Rc2 35.Rg6 Kh7 36.Rf6?? Kg7?? 37.Rf7 Kg6 38.h3 Ra2 39.Rf3 Rc2 40.Rf5 Rd2 41.Ne4 Kf5 42.Nd2 Ke5 43.Nf3 Ke4 44.Nd2 Kd3 45.Nf3 c4 46.Ne5 Kd4 47.Nc6 Kd5? 48.Ne7 Kd4 49.Nf5 Kd3–+ 50.Nd6?? c3 51.g4 c2 52.a4 c1Q 53.Kg2 Qd2 54.Kh1 Ke3 55.Nf5?? Kf3 56.Nh4 Kg3 57.Nf5 Kh3 58.a5 Qh2# (58...Qe1#) 0–1. Dufus – arti (1610), chess.net, 1998.

4.d3 b5

5.a4 ba4 6.c4 c5 7.bc5= Qa5 8.Bc3 Qc7 9.Qa4 Bd7= 10.cd6 Qc6?? 11.Qc6+– Bc6? 12.Be5 1–0. nay (2190) – sbderkach (1680), net–chess.com, 2006.

5.Nd2 Bb7 6.Ngf3 Nc6 (6...Qd7 7.d4 ed4 8.Nd4+=) 7.a3 (7.d4 a6 (7...Nb4? 8.a3 Nc6 9.Bb5+/–) 8.d5 Ne7+=) 7...a5 (7...Qd7 8.a4 a6 9.d4 ba4 10.d5 Nb4 11.c3 Nbd5 12.ed5 Bd5 13.Qa4+=) 8.ba5 (8.a4 ab4 9.ab5 Na5+=) 8...Na5 (8...Ra5 9.Nb3 Ra6 10.d4=) 9.Be2 (9.d4 ed4 10.Nd4 c6+=) 9...c5 10.0–0 Qb6 (10...Be7 11.Nh4=) 11.Bc3 (11.Nh4!?=) 11...Be7+= 12.Re1 0–0 13.Bf1 (13.h3 g6+=) 13...Nc6–/+ 14.Qb1 Nd4 15.Bb2 Rfc8 (15...Bc6 16.g3–/+) 16.c3 Nc6 17.Bc1 d5 (17...Ra6 18.Qc2+=) 18.d4 (18.ed5!? Nd5 19.c4=) 18...cd4–/+ 19.ed5 Nd5 20.Nc4 0–1. Santana,Expedito (1705) – Squincalha,Pedro Guilherme Sal, IRT Nova Odessa, 2011.

5.Nd2 c5 6.a3 a5 (6...cb4 7.ab4 Be7 8.Ngf3=) 7.c3 (7.bc5 Nc6 8.Ngf3 dc5 9.Ne5 Ne5 10.Be5 Bd6 11.Bd6 Qd6+=) 7...Be7 8.d4 ab4 9.Bb5 Bd7 10.Bd7 Qd7 11.ab4 Ra1 12.Ba1 cb4 13.de5 de5 14.Ngf3 Nc6 15.0–0 0–0 16.cb4 Bb4 17.Qe2 Ra8 18.Nc4 e5 draws heavy fire 18...Nd4?? (better is 18...Qg4=) 19.Nd4 (19.Bd4 ed4 20.Nb6 Qc6 21.Na8 Qa8+–) 19...ed4?! (19...Ra1 20.Ra1 Qd4+–) 20.Nb6 Qb7 21.Na8 Qa8 22.Bd4 (22.e5!? Nd5 23.Bd4 Nf4+–) 22...Ne4 23.Qb2 Bf8 24.f3 Nd6 25.Rb1 Qc6 26.Rc1 Qe8 27.Kf2 h6 28.Re1 Qd8 29.Be5 Nc4 30.Qc3 Ne5 31.Qe5 1–0. Sapareva,Magdalena – Simonska,Gergana, 146th MGU Open, 2015.

5.Nd2 Nc6 6.a4 ba4 7.c3 =.

5.Nd2 Nc6 6.Ngf3 Bd7 7.a4 =.

5.Nf3 c6 6.Be2 Ng4 7.h3 Nf6 8.0–0 Nh5 9.Ne5 de5 10.Bh5 Bd6 11.a3 g6 12.Be2 f6 13.c4+– bc4 14.dc4 a5 15.c5 Be7 16.Qb3 a4 17.Qc2 0–0 18.Nc3 Ba6 19.Ba6 Ra6 20.Na4 Nd7 21.Rfd1 Qc8 22.Rd2 f5 23.Rad1 Ra7 24.Nb6 Nb6 25.cb6 Rb7 26.Be5 Rb6 27.ef5 gf5 28.Rd7 Rb7 29.Rb7 Qb7 30.Qc4 Rf7 31.Rc1 Qd7 32.Qc6 Qc6 33.Rc6 h5 34.Bd6 Bd6 35.Rd6 Ra7 36.Rd3 Kf7 37.Kf1 Ke6 38.Ke2 Ke5 39.Kd2 Ke4 40.Kc2 Rc7 41.Rc3 Rg7 42.Rg3 Rc7 43.Kb3 f4 44.Rg5 h4 45.Rg4 Kf5 46.Rh4 Kg5 47.Rg4 Kf5 48.b5 Ke5 49.a4 Rf7 50.b6 Kd6 51.Kb4 f3 52.g3 Rh7 53.Rf4 Kc6 54.a5 Rh3 55.Rf3 Kb7 56.Rf7 Kb8 57.a6 Kc8 58.a7 Kd8 59.a8Q 1–0. pumpkin (2225) – sbderkach (1735), net–chess.com, 2006.

4.d3 c6

5.a3 Nbd7 6.g3 Be7=+ 7.Bg2 Qc7 8.Qd2 b6 9.Ne2 Bb7 10.c4 d5 11.cd5 cd5=+ 12.Nbc3 de4 13.de4= Rc8 14.0–0 0–0 15.Rac1 Qb8 16.Qc2 Qa8 17.Qb1 a5=+ 18.ba5 Qa5 19.Qa2 Ba6–/+ 20.Ra1 Bc4 21.Qb1 Nc5 22.Nc1? Bf1–+ 23.Bf1 Na4 24.Na4 Qa4 25.f3 Bc5 26.Kh1 Qd1 27.Ne2 Qb1 28.Rb1 Rfe8 29.Bh3 Ra8 30.Ra1 Re7 31.Bf5 Ne8 32.Nc3 Nc7 33.Ne2 Nb5 34.a4 Nd4 35.Nc3 Nf5 36.ef5 Rd7 37.Ne4 Bd4 38.Bd4 ed4 39.h4 d3 40.h5 h6 41.Kh2 d2 42.Rd1 Ra4 43.Kh3 Rc4 44.f6? Rc1 45.Rd2 Rd2 46.Nd2 gf6 47.Ne4 Kg7 48.Kg4 b5 49.Nd6 b4 50.Nf5 Kh7 51.Nd6 b3 52.Nf7 b2 (52...b2 53.Kf4 b1Q–+) 0–1. Skara,Vladimir – Sykora,Matej, SVK–ch U14 Bratislava, 2002.

5.c4 Bg4 6.Be2 Be2 7.Ne2 Qb6 8.a3 Nbd7 9.0–0 d5 10.c5 Qc7 11.Nd2= d4 12.Nc4 Be7 13.Bc1 0–0 14.f4+/– a5 15.fe5 Ne5 16.Bf4 Nfd7 17.Nd4 Bf6 18.Nf3 ab4 19.Nfe5+– Ne5 20.d4 Be7 21.Be5 Qd8 22.ab4 (22...Ra1 23.Qa1+–) 1–0. hal1958 – golddim, playchess.de, 2003.

5.Be2 Qb6 6.Bc3 Nbd7 7.Nf3= Qc7 8.0–0 Be7 9.Nbd2 d5=+ 10.a3 0–0 11.Re1 Bd6 12.Bf1 Re8 13.Nb3 Nf8 14.Qe2 Ng6 15.Bd2 b6 16.c4 Bb7 17.c5= Bf8 18.Rac1 Ba6 19.Qd1 Rac8 20.Qc2 h6 21.cb6 ab6 22.ed5 Nd5 23.d4 Bf1 24.Kf1 Bd6 25.de5 Ne5 26.Nfd4 Qd7 27.Qf5 Qb7 28.Kg1 c5 29.Nb5 Bb8 30.Qe4 Qd7 31.Nc3?? Nc3–+ 32.Bc3 Nd3 33.Qf3 Ne1 34.Be1 c4 35.Nd2 Re1! 36.Re1 0–1. Uzhva,Andrey (2280) – Demin,Vladimir, RUS–ch U14 Smolensk, 2001.

5.Nf3 Na6 6.a3 Bg4 7.Nbd2 Be7 8.d4+= ed4 9.Ba6 ba6 10.Bd4 a5 11.0–0 0–0 12.Qe1 ab4 13.ab4 c5 14.Bc3 cb4=+ 15.Bb4 Nd7 16.Ba5 Qc8 17.c3 Bf6 18.Qe3 Qc5 19.Qc5 Nc5 20.Nd4 Nb7 21.Bb4 a5=+ 22.Ba3 Nc5 23.Nb5 Be2–+ 24.Rfb1 Bb5 25.Bc5 dc5 26.Rb5 Bc3 27.Ra2 Rfd8 28.Nf1 Bb4 29.f3 29...Kf8 30.Rb7 Ke8 31.Kf2 c4 32.Ke2 c3–+ 33.Rc2 Ra6 34.Ne3–/+ Re6 35.g4 g6 36.Kf1 Re7 37.Re7 Ke7 38.Ke2 Kd6 39.Nd5 Rc8 40.Kd3 Ke6 41.g5=+ Kd6 42.Nb6 Rc6 43.Nd5= Rc8 44.Rc1 ˝–˝. Persson – Backe,Peter, Hallsberg, 1976.

5.g3 Ng4 6.Qd2 Be7 7.Bg2 0–0 8.h3 Nf6 9.g4 Be6 10.Ne2 Nbd7 11.0–0 Qc7 12.Ng3 g6 13.Kh1 Rad8 14.f4 ef4 15.Qf4 Ne8 16.Nf5 Bf6 17.Nh6 Kg7 18.Bf6 Ndf6 19.Nf5?? (better is 19.d4=) 19...gf5–+ 20.gf5 Bc8 21.Bf3 d5 22.e5 Kh8 23.d4 Ne4! 24.Be4 de4 25.c3 Ng7 26.f6 Nf5 27.Nd2 e3 28.Nf3 Rg8 29.Rg1 Rde8 30.Rg5 Rg5 31.Ng5 h6 32.Ne4 Rg8 33.Re1 Qd8 34.Re3 Rg6 35.Ng3?? Ne3–+ (35...Ne3 36.Qe3 Qd7–+ (worse is 36...Bh3 37.Kh2 Be6 38.a4–+)) 0–1. Sabicas,Eli – Haddad,Maher, OP–2007–0–00380, 2007.

4.d3 Nc6

5.a3 a5 6.b5 Ne7 7.Nd2 a4 8.c4 c6 9.bc6 Nc6 10.Ngf3 Qa5 11.Be2+= Be7 12.0–0 h6 13.h3 g5 14.Nh2+= Qb6 15.Rb1 Nd4 16.Nhf3 Ne2 17.Qe2 g4 18.hg4 Qd8 19.Nh2 Rg8+= 20.f3 h5= 21.gh5 Bh3 22.Rf2 Nh5 23.Ng4 Nf4 24.Qd1 Bg4 25.fg4–/+ Nd3 26.Rf1?? Qb6 27.Kh2 Rh8 28.Kg3 Qe3 29.Rf3 Bh4 30.Kh2 Be1 31.Rh3 Rh3 32.gh3 Qg3 (32...Qg3 33.Kh1 Nf2#) 0–1. Krc,Milan (1660) – Petrilak,Jan, Brno Duras BVK op–B, 2001.

5.a3 a6 6.h3 Be7 7.Be2 0–0 8.Nf3 Be6 9.Nbd2 d5 10.0–0 de4 11.de4 b5 12.Ng5 Qd6 13.Ne6 Qe6 14.Nf3 Rad8 15.Qc1 Bd6 16.Ng5 Qe7 17.Bd3 h6 18.Nf3+= Qe6 19.Nh2 Ne7 20.c4 c6 21.c5 Bc7 22.Bc2 Ng6 23.Nf3 Nf4 24.Bd1 Ne4 25.Qb1 Nf6 26.Re1–/+ Nd3 27.Re2 Nb2 28.Qb2 e4 29.Bb3 Qd6?? 30.Ne5 Qe5–+ 31.Qe5 Be5 32.f3 Ba1 (33.Bc2 Bb2–+) 0–1. PoPer – cip82, Live Game Caissa's Web, 2004.

5.a3 Be6 6.Be2 Be7 7.Nf3 0–0 8.0–0 a5 9.b5 Na7 10.c4 b6 11.Ng5 Bc8 12.a4 c6 13.Bc1 cb5 14.ab5+= Bb7 15.f4 Nd7 16.Nh3 Nc5 17.fe5 de5= 18.Bb2 f6 19.Bg4? Nd3–+ 20.Bc3 Be4 21.Ra2 f5 22.Be2 Nc5 23.Qd8 Rfd8 24.Be5 Nd7 25.Bf4 Bc5 26.Kh1 Nf6 27.Nc3 Bb7 28.Bf3?? Bf3–+ 29.gf3 Rd3 30.Be5? Nd7 31.Bg7 Kg7 32.Rc2 Rg8 33.Nd5 Nf6 34.Nf6 Kf6 35.Nf4 Rf3 36.Nd5 Kf7 37.Rcc1 Rf1 38.Rf1 Rg5 39.h3 Kg6 40.Kh2 Nc8 41.h4 Rg4 42.Kh3 h5 43.Rc1 Ne7 44.Re1 Nd5 45.cd5 Re4 46.Re4 (46.Rd1 Rb4–+) 0–1. ahmed sharkawy_1 – Conveyor, ChessWorld.net, 2005.

5.a3 Be7 6.Nf3 h6 7.Be2 0–0 8.b5 Na5 9.Bc3 b6 10.Ba5 ba5 11.c4 Bg4 12.Qd2 Nh7 13.Qa5 Ng5 14.Nbd2 Qd7 15.0–0 Bd8 16.Qa6+/– Nf3 17.Bf3 Bf3 18.Nf3+– f5 19.Qb7 Be7? 20.a4 fe4 21.Qe4 Rf4?? 22.Qa8 Kh7 23.Qa7 e4 24.Qd4 Bf6 25.Qe3 Qg4 26.h3 Rf3 27.Qf3! Qf3 28.gf3 ef3 29.Ra3 Kg6 30.a5 (30.a5 Bd4 31.Re1+–) 1–0. bonaparte (2155) – bar (1905), net–chess.com, 2008.

5.b5 Na5 6.a4 b6 7.Nf3 Bb7 8.Nbd2 Qe7 9.Be2+= g6 10.c4 h5 11.Bc3+/– Bh6 12.Ba5 ba5 13.Nb3 Qd8 14.Na5 Bc8 15.Nc6 Qd7 16.Qc2 Bb7 17.Na5 Bc8 18.d4 ed4 19.Nd4 Qe7 20.0–0+– Ne4? 21.Bf3 f5 22.Rfe1 Qf6?? 23.Be4 fe4 24.Re4 Kd7 25.Nac6 Bb7 26.Re7 Kc8 27.Rae1 Bc6 28.Nc6 Kb7 29.a5 Rae8 30.a6 Kb6 31.Re8 Re8 32.c5 Kb5?? 33.Rb1 Kc6 34.Qa4 Kc5 35.Qe8 c6 36.Qe1 d5 37.Qb4# 1–0. wood – poopypants, Live Game Caissa's Web, 2005.

5.b5 Nb8 6.Nf3= Be7 7.Be2 0–0 8.0–0 c6 9.Nc3 a6 10.ba6 ba6 11.Qd2 a5 12.d4 ed4 13.Nd4 d5 14.e5 Nfd7= 15.e6 fe6?? 16.Ne6+– Qb6 17.Nf8 Nf8 18.Na4 Qc7 19.c4 Bd6 20.g3 dc4 21.Bc4 Be6 22.Be6 Ne6 23.Rae1 Kf7?? 24.Qe2 Ng5 25.Qe8# 1–0. Wall,Bill – Dinar, internet, 2004.

5.b5 Ne7 6.c4 a6 7.Nc3 ab5 8.cb5 h6 9.Nf3 Be6 10.a4 c5 11.Be2 Ng6 12.Bc1 Qa5 13.0–0?? Qc3–+ (13...Qc3 14.Bd2 Qb3–+) 0–1. wlittle (2100) – huimre (2090), net–chess.com, 2004.

5.c3 Be7 6.Be2 0–0 7.Nf3 a6 8.0–0 d5 9.ed5 Nd5 10.c4 Nf4 11.Ne5 Nb4 12.a3= Nc6 13.Nc6 bc6 14.Bg4 Qd3–/+ 15.Bc8 Qd1 16.Rd1=+ Rac8 17.Rd7 Rfe8 18.Nd2 Bb4?? 19.ab4+– Red8 20.Re7 Rd2=+ 21.Rae1 Kf8 22.Rd7?? Rd7–+ 23.Ba3 Kg8 24.b5 cb5 25.g3 Nd3 26.Re2 b4 27.Bb2 Nb2 28.Rb2 c5 29.Ra2 b3 30.Ra6 b2 31.Rb6 Rd1 32.Kg2 b1Q 33.Rb1 Rb1 34.h4 Re8 35.Kh3 Rc1 36.Kg4 Rc4 37.f4 Rce4 38.Kf5 c4 39.g4 c3 40.h5 c2 41.g5 g6 42.hg6 fg6 43.Kg4 c1Q 44.Kf3 Qf4 45.Kg2 Re2 46.Kh1 Qh2# (46...Qc1#) 0–1. Tortoza,Carlos – Santos,Pedro (1835), CiF, 2007.

5.Nf3 g6 6.b5= Ne7 7.c4 Bg7= 8.h3 0–0 9.a4 c6 10.Nc3 c5 11.Be2 Be6 12.0–0 b6 13.Ng5+= h6 14.Ne6 fe6 15.Bg4 Ng4 16.Qg4 Qd7 17.a5 Rfb8 18.a6 Rd8 19.Rfe1 (19.Rfe1 Rf8 20.Bc1+=; 19.Bc1 Rf8+=). Borup,John – Foster,Alexander, IECC, 2000.

4.d3 d5!

5.b5 Bb4 6.c3 Bc5 7.Nd2 =+.

5.b5 de4 6.Be5 Bf5. Sokolski,Aleksey – Gilman, corr SU, 1949.

5.ed5 Bb4 6.c3 Bc5 7.c4 0–0 8.Nf3 c6 9.Be2 Bf2!–+ 10.Kf1 Ng4 11.Bc1 cd5 12.h3 Ne3 13.Be3 Be3 14.Nbd2 Qf6 15.cd5 Bd2 16.Qd2 e4! 17.Kf2 ef3 18.Bf3 Nd7 (18...Nd7 19.d4 Nb6–+) 0–1. 1805DYDIDIDY – Duke4Nukem@, mySchach.de, 2005.

5.Be5 Nc6 6.Bc3 Bb4 7.Bb4 Nb4 8.e5 =+.

5.Be5 Be7 6.a3 0–0 7.ed5 Nd5 8.Bb2 Bf6 9.d4 Re8 (9...Re8 10.Ne2 Bg4=+). magne – dugmak, ChessWorld.net, 2005.

5.a3 de4

6.Be5 a5 7.b5 Ng4 8.Bg3 Bc5 9.Qe2 e3 10.f3 Nh6 11.c3 0–0 12.d4 Bd6 13.Bd6 cd6 14.g3 Bf5 15.Bg2 Re8–/+ 16.a4 Nd7 17.Na3 Rc8 18.Rc1 d5 19.Qb2 e2 20.Ne2–/+ Bd3 21.Bf1 Qe7 22.Rd1 Qe3 23.Rd3 Qd3 24.Kf2 Nf5 25.Nb1 Nb6 26.Qa2 Na4!! (27.Rg1 Rc3 (27...Qb5?! 28.Nf4 Qb6 29.Nd5–+) 28.Nec3 Qd4 29.Kg2 Nc3 30.Nc3 Qc3–+) 0–1. Molarius,Reijo – Jaederholm,Bo, corr Finland, 1996.

6.Be5 Nc6 7.Bb2 a5 8.b5 Bg4 9.f3 ef3 10.gf3 +–.

6.Be5 Nc6 7.Bb2 Bd6 8.de4= Ne4 9.Qe2+= 0–0 10.Qh5?? Re8–/+ 11.Be2 Nd4!? 12.Bd4 Bb4! 13.c3 Qd4 14.ab4 Qf2 15.Kd1 Qe3 16.Qf3? Nf2 17.Kc2 Qf3 18.Bf3 Nh1 19.Nh3 Bf5 20.Kb2 Re1 21.g4 Bb1 22.Rb1 Rb1?? 23.Kb1 Re8 24.Bb7 Nf2 25.Nf2 Re1 26.Nd1 Rd1 27.Kc2 Rg1 28.Kb3 Rg4 29.c4 Kf8 30.Bd5 Ke7 31.Ka4 c6! 32.Bc6 Rc4 33.Bf3 f5 34.Ka5 g5 35.Bd1 g4 36.b5 h5 37.Ka6 Rc7 38.h3 gh3 39.Bh5 Rc3 (39...Rc3 40.Ka7 h2–+) 0–1. Francois,Jean (1770) – Shchekachev,Andrei (2535), St Quentin op 4th, 2001.

6.Be5 Nc6 7.Bb2 Bf5 8.d4 Bd6 9.Nd2 0–0 10.Nc4 Nd5 11.Qd2 (11.Nd6!? Qd6 12.b5+=) 11...Bf4–/+ 12.Ne3 Qg5 13.h4 Qh6 (13...Be3?! 14.hg5 Bd2 15.Kd2=) 14.Bc1 Rad8 (14...Ne3!? 15.fe3 Bg3 16.Kd1 Rad8–+ (16...Bh4 17.g3+/–)) 15.Ne2–/+ Bc8 16.Nf4 Nf4 (worse is 16...Qf4 17.Nd5 Qd2 18.Bd2 Rd5 19.c3+=) 17.Bb2 Qh5 18.Be2 (better is 18.b5!? Ne7 19.Qa5=) 18...Ne2–/+ 19.Qe2 Qe2 20.Ke2 Nd4 21.Bd4 Rd4 22.Rad1 Rfd8 23.Rd4 Rd4 24.Rd1 Rd1 25.Kd1 Be6 26.Kd2 f5 27.Kc3 Kf7 28.Kd4 Kf6 29.g4 f4 30.g5 Kg6 31.Nf1 e3 32.f3 (32.fe3 f3 Passed pawn) 0–1. Dominguez,Jose – Martinez,Lelys, Santo Domingo DOM, 2nd Copa AES, 2012.

6.Be5 Ng4 7.Bb2 Bf5 8.h3 ed3 9.cd3 Qe7 10.Qe2 Qe2 11.Ke2 Nh6 12.g4 Bg6 13.Bg2 c6 14.Nf3 f6 15.Re1 Be7 16.g5 Ng8 17.gf6 Nf6 18.Ng5 Nbd7 19.Ne6 Kf7 20.Kd2 Bf5 21.Ng7 Bb4 22.ab4 Kg7 23.Re7 Kg6 24.Be4 Be4 25.de4 Rhe8 26.Bf6 Nf6 27.Re8 Re8 28.f3 a6 29.Nc3 Kh5 30.Ra5 Kh4 31.Rf5 Rf8 32.Ke3 Kh3 33.Kf2 Kh4 34.Ne2 Nd7 35.Ra5 Nb6 36.Ra1 Rf7 37.Rh1 Kg5 38.Rg1 Kh4 ˝–˝. Wall,Bill – Pennell,Gary, Taylorsville 1975.

6.Be5 Ng4 7.Bb2= Bf5 8.h3 ed3 9.cd3 Qe7 10.Qe2 Qe2 11.Ke2 Nh6 12.g4= Bg6 13.Bg2 c6 14.Nf3 f6 15.Re1 Be7 16.g5 Ng8 17.gf6 Nf6 18.Ng5 Nbd7= 19.Ne6 Kf7 20.Kd2 Bf5 21.Ng7!+/– Bb4? 22.ab4+– Kg7 23.Re7 Kg6+/– 24.Be4 Be4+= 25.de4 Rhe8 26.Bf6 Nf6 27.Re8 Re8 28.f3 a6 29.Nc3 Kh5 30.Ra5 Kh4 31.Rf5 Rf8 32.Ke3 Kh3= 33.Kf2 Kh4 34.Ne2 Nd7=+ 35.Ra5 Nb6?? 36.Ng3+– (36.Ng3 Nd5 37.ed5+–) 1–0. Wall,Bill – Pennell,Gary, Taylorsville, NC, 1975.

4.d3 Bd7

5.a3 a6 6.Nd2 Nc6 7.Ngf3 Be7 8.Be2 b5 9.0–0 0–0 10.Ne1 Be6 11.Nef3 Nd7 12.c4 f5 13.ef5 Bf5 14.Rc1 Na7 15.Ne4 bc4 16.Ng3 cd3 17.Nf5 Rf5 18.Bd3+/– Rf8 19.Qc2 c5 20.Bh7 Kh8 21.Be4 Rb8 22.Qd2 cb4 23.ab4 Nf6 24.Bb1 Qd7 25.Rfd1 Rb7 26.Rc4 e4? 27.Bf6 Rf6 28.Re4 Rf3 29.gf3 Rb5 30.Qd3 Qh3 31.Rg4 d5 32.Qg6 Bf8 33.Rdd4 Qf3 34.Rh4 Kg8 1–0. Fritz,Harry – Niemann, corr DDR, 1962.

5.a3 Nc6 6.Nf3 a6 7.h3 Be7 8.Nbd2 0–0 9.Be2 h6 10.0–0 Nh7 11.d4 ed4 12.Nd4 Nd4 13.Bd4 Bf6 14.Bf6 Nf6 15.Bd3 Re8 16.Re1 Bc6 17.c3 Nd7 18.Nf3 Qf6 19.Qc2 Ne5 20.Ne5 de5 21.Re3 Rad8 22.Qb3 Rd6 23.Rf3 Qe7 24.Bc4 Rf6 25.Rf6 Qf6 26.Qc2 Rd8 27.Be2 Qf4 28.Bf3 Rd2–/+ 29.Qb1 Bd7 30.Ra2 Ra2–/+ 31.Qa2 Qc1 32.Kh2 Qc3 33.Qd5=+ Bc6 34.Qd8= Kh7 35.Qc7 Qa3 36.Qf7 Qb4 37.Qf5 Kg8 38.Qe5 a5 39.Qe6 Kh8 ˝–˝. kingsbest (1980) – sturkington (2335), ChessWorld.net, 2003.

5.Be2 a5 6.ba5= Ra5 7.Nd2 Nc6 8.c3 Qa8 9.a3 d5–/+ 10.Nb3 Ra4 11.ed5 Nd5 12.Nf3 Ba3 13.Ba3? Ra3–+ 14.0–0 Nc3 15.Qc2 Ne2 16.Qe2 f6 17.Qb2 Ra1 18.Ra1 Qd8 19.Nc5 b6 20.d4?? bc5–+ (20...bc5 21.de5 0–0 22.Qb3 Kh8–+) 0–1. 1805DYDIDIDY – Schefsche, mySchach.de, 2005.

5.Nf3 Nc6 6.a3 Qe7 7.Nbd2 d5 8.c4 dc4 9.Nc4+= Be6 10.Nce5+/– Ne5 11.Be5 Bg4 12.Be2 Bf3+= 13.Bf6 Qf6 14.Bf3 0–0–0 15.0–0+/– h5 16.Re1 g5 17.e5+– Qf5 18.Be4 Qd7 19.Qc2 Bg7 20.Rad1 Be5 21.d4! Bd6?? 22.Bf5 f6 23.Bd7 Rd7 24.Re6 h4 25.h3 g4 26.Rde1 gh3 27.Rd6! Rd6 28.Qf5 Kb8 29.Qh3 Rd4 30.Qc3 Rg4 31.Re7 c6 32.Qf6 Rhg8 33.Qe5 Ka8 34.Re8 (34.Re8 Re8 35.Qe8) 1–0. wlittle (2100) – beatmeup (2000), net–chess.com, 2005.

5.Nf3 Bg4 6.Be2= h6 7.h3 Be6 8.a4 c6 9.0–0 Be7 10.Nbd2 Qc7 11.c4 0–0 12.a5 a6 13.Rc1 Nbd7 14.Nb3 b5 15.cb5+= ab5 16.Nfd2 d5=+ 17.ed5 Bd5 18.Bc3=+ c5 19.Bf3 Rfc8 20.Re1 cb4 21.Bb4 Qd8 22.Be7 Qe7 23.Rc8 Rc8 24.Qa1 Bf3 25.Nf3= Re8 26.a6 Nd5 27.Qa5 Qb4= 28.Nfd2 Qa5–/+ 29.Na5 Ra8 30.Nc6=+ Ra6 31.Ne5 Re6 32.Nef3 Re1 33.Ne1 b4 34.Nb3 Nf4 35.d4 Nf6 36.Nc2 N6d5 37.Kf1 Kf8 38.h4= g5 39.hg5 hg5 40.g3 Nh5 41.Ne3?? Ne3–+ 42.fe3 Ng3 43.Kf2 Nh5 44.e4–/+ Ke7 45.Kf3 f6 46.Kg4 Ng7 47.Nc5 Kd6 48.Nb3 Kc6 49.d5 Kd6–+ 50.Kf3 f5 51.ef5 Nf5 52.Kg4 Ne3 53.Kg5 Kd5 54.Kf4 Nc2 55.Na5 Kd4?? 56.Kf3?? Kc3 57.Ke4 Nd4 58.Kd5 Nb3?? (better is 58...Ne2–+). Bittner – Huebscher, corr, 1985.

5.Nf3 g6 6.Nbd2 Bg7 7.Be2 0–0 8.0–0 Re8 9.c4 c6 10.Rb1 Qc7 11.a4 c5 12.b5 Nf8 13.h3 Ne6 14.Nh2 Nd4 15.Bd4 cd4 16.f4 ef4 17.Rf4 Be6 (17...d5 18.Qf1 Ne4 19.Ne4 de4 20.Re4 Re4 21.de4+=) 18.Rf2 Nd7 19.Nb3 Nc5 20.Bg4 (20.Ra1!?=) 20...Na4–/+ 21.Be6 Re6 (21...fe6 22.Qg4+=) 22.Qf1 Nc5 23.Nf3 Exerts pressure on the isolated pawn 23...Nb3 24.Rb3 h6 25.Ra3 Qc5 26.Qa1 Re7 27.Rfa2 f5 28.Ra7 (28.ef5!? Qf5 29.Ra7 (29.Nd4?? Qf4 30.Nf3 Ba1 31.Ra1 Re2–+) 29...Ra7 30.Ra7 Qd3 31.Rb7 Rb7 32.Qa8 Kh7 33.Qb7 Qc4 34.Qc6=) 28...Ra7–/+ 29.ef5?? (better is 29.Ra7 fe4 30.Rb7 Rb7 31.Qa8 Kh7 32.Qb7 ef3 33.Qf3–+) 29...Ra2–+ 30.Qa2 Qf5 31.Qd2 Qe6 32.Kf2 Qe3 (32...Qe3 33.Qe3 Re3–+) 0–1. Sapareva,Magdalena – Ljangov,Petar (2070), BUL–ch Seniors, 2009.

4.d3 Nbd7

5.a3 Be7 6.Be2 c6 7.Nf3= Qc7 8.Nbd2 0–0 9.0–0 Re8 10.Nc4 Bf8 11.Ne3 g6 12.c4 Nb6 13.Rc1 Be6 14.c5 Nbd7 15.cd6 Bd6 16.Nc4 Bc4= 17.Rc4 Nb6 18.Rc1+= Rad8 19.Qb3 Qe7 20.Nd2 Qe6= 21.Qc2 Bc7 22.b5 Rd6 23.a4 Qd7 24.a5 Na8 25.bc6 Rc6= 26.Nc4 Ba5 27.Be5?? Qd8?? 28.Qa4?? Rc4!–/+ 29.Bf6?? Ra4–+ (29...Ra4 30.Bd8 Rd8–+) 0–1. De Jager,Jaap (2290) – De Nooijer,S, Vlissingen HZ op 2nd, 1998.

5.Be2 d5–/+ 6.a3 de4 7.de4 Ne4 8.Bf3 f5 9.Bh5 g6–/+ 10.Be2 Bd6 11.f4? Qh4–+ 12.g3 Ng3! 13.Nf3 Qh3?? 14.fe5?? Ne5!–+ 15.Be5 Be5 16.Ne5 Nh1 17.Qd5 Qh4 18.Kd1 Rf8 19.Bb5 c6 20.Nc6 Nf2 21.Kc1 Qf4?? 22.Kb2=+ bc6 23.Bc6 Ke7 24.Ba8 Be6 25.Qc5 Qd6?? 26.Qa7 Kf6 27.Bf3?? Qe5 28.Nc3–/+ Ne4?? 29.Be4+/– fe4 30.Qh7+– Rc8 31.Qh4 g5 32.Qf2 Kg6 33.Qe3 Bf5 34.Rg1 Qc3?? 35.Qc3 Rc3 36.Kc3 g4 37.h3 Kg5 38.hg4 Bg4 39.Kd4 Kf4 40.Rg4! Kg4 41.Ke4 (41.Ke4 Kh5 42.a4+–) 1–0. 73DADDELDU37 – Ikterus@, mySchach.de, 2005.

5.Nf3 b6 6.Be2 Bb7 7.a3 g6 8.Nbd2 Bg7 9.c4 c5 10.b5 0–0 11.0–0 Re8 12.a4 Nh5 13.g3 Bh6 14.Nh4 Ng7 15.Ng2 f5 16.ef5 Nf5 17.Bf3 Bf3 18.Nf3 Bg7 19.Rb1 Nf6 20.Re1 Re7 21.Ne3 Ne3 22.Re3 Qe8 23.Nd2 Rd8 24.Qe2 Qd7 25.f3 Bh6 26.f4 Rde8 27.Ne4 Ne4–/+ 28.Re4 ef4 29.Qf3 fg3 30.hg3 Re4 31.de4 Rf8 32.Qc3 Bg7 33.Qd3 Bb2 34.Rb2 Qe7 35.Re2 Qf6 36.Rd2 Qa1 37.Kg2 Qa4 38.Qd5 Kg7–/+ 39.Qd6 Qc4 40.Qe7 Qf7 41.Qe5 Kg8 42.Qd5 Qd5 43.ed5 Rd8 44.Kf3 Kf7 45.Ra2 Rd7 46.Ke4 Re7 47.Kf4 Kf6 48.Ra4 g5 49.Kf3 Ke5 50.Re4 Kd6 51.g4 Re4 52.Ke4 h6 (52...h6 53.Kf5 Kd5–+) 0–1. Sapareva,Magdalena (1685) – Bedecs,Marton (1670), 1st Dimitar Nikolov Mem, 2011.

5.Nf3 Be7 6.Nbd2 0–0 7.d4 ed4 8.Nd4 d5–/+ 9.ed5 Nd5 10.b5? N7f6 11.Bc4 Bb4 12.0–0 Nc3 13.Qe1??Qd4–+ 14.Bf7 Rf7 15.Nb1 Ne2! 16.Qe2 Qb2–+ 0–1. Torres Herrero,Fernando – Velasco Palmero,Rosa, Valladolid CC Regalado, 1985.

4.d3 Be6

5.Nc3 a5 6.a3 ab4 7.ab4 Ra1 8.Qa1 Nc6 9.Ba3 d5 10.ed5 Nd5 11.Nd5 Bd5 12.c4 Bg2?? 13.Bg2+– Nb4 14.Bb4 Bb4+/– 15.Ke2 Qg5?? 16.Bb7 Qd2+/– 17.Kf1 Qd3 18.Ne2+– 0–0 19.Bd5 e4? 20.Qd4 Qh3 21.Kg1 c5 22.Qe4+– g6 23.Qf3 Qh6 24.h4 (24.h4 Qg7 25.h5+–; 24.Kg2 Qg5 25.Ng3 Kg7+–) 1–0. 1805DYDIDIDY – cirovicz@, mySchach.de, 2005.

5.Nc3 a6 6.Nf3= Be7 7.Be2 Nc6 8.a3 0–0 9.0–0 Re8 10.Ng5 Bd7 11.f4 h6 12.Nf7 Kf7–+ 13.Bh5 g6 14.fe5 de5 15.Nd5? Kg7 16.Be2 Nd5 17.ed5 Nd4 18.Kh1 Ne2 19.Be5–/+ Kg8 20.Qe2 Bd6 21.d4 Qg5 22.Rae1 Bg4 23.Qc4 Bd7 24.Bd6 cd6 25.Qc7 Re1 26.Re1 Re8 (26...Re8 27.Rf1 Qf4–+) 0–1. alaamattar (2170) – petre (1960), net–chess.com, 2005.

5.c4 Na6 6.a3 Bd7 7.Nf3 Qe7 8.Be2 g6 9.Nc3 c6 10.0–0 Bg7 11.h3 0–0 12.Nh2 Nc7 13.a4 Ne6 14.Ng4 Nd4 15.Nf6 Bf6 16.Bg4 Bg7 17.Bd7 Qd7 18.Ne2 Ne2 19.Qe2 Rfe8 20.b5 b6 21.f4 ef4 22.Bg7 (worse is 22.Rf4 Be5 23.Rf3 f5 24.Be5 de5=) 22...Kg7 23.Rf4 cb5 24.ab5 Kg8 25.Qb2 Re6 26.Raf1 Rf8 27.d4 Qe7 28.Qc2 f5 29.ef5 gf5 30.Rf5 Re1?? (better is 30...Ref6 31.Rf6 Rf6 32.Rf6 Qf6+–) 31.Rf8 Kg7 32.R8f3 Rf1 33.Kf1 1–0. Sapareva,Magdalena (1645) – Kotseva,Dimitrichka, Sofia BUL, Seniors Ch, 2012.

5.c4 c6 6.Nf3 Qb6 7.Qa4 Nbd7 8.d4 Ne4–/+ 9.Bd3 d5 10.c5–+ Bc5 11.dc5 Ndc5! 12.Qc2 Nd3 13.Qd3 Qf2 14.Kd1 Qb2 15.Nfd2 Nf2 (16.Ke2 Nd3 17.Kd3 Qa1–+) 0–1. Kulemann,Michael – Lorenz,Oda, Augsburg op 2nd, 1995.

5.c4 Nc6 6.a3 –/+.

5.c4 Nc6 6.b5 Ne7 7.Be2 c6 8.Nc3 g6 9.Nf3+= Bh6 10.Na4 0–0 11.0–0 Qd7 12.c5+= cb5 13.cd6 Nc6 14.Ne5 Ne5 15.Be5 ba4 16.Bf6 Qd6 17.e5 Qd5 18.Kh1 b5? 19.h4?? Bf4 20.h5 Be5 21.Be5?? Qe5–/+ 22.hg6 hg6 23.d4 Qd6 24.Bb5=+ Kg7 25.d5?? Rh8 (25...Rh8 26.Qh5 Rh5 27.Kg1 Qh2#) 0–1. Pedersen,Birger – Talberg,Kristian, Bymesterskap, 2002.

5.c4 Nbd7 6.Nf3 Be7 7.Be2 0–0 8.0–0 c6 9.Nbd2 Rc8 10.d4+= ed4 11.Bd4 b6 12.Nb3 c5 13.bc5 dc5 14.Bf6 Bf6 15.Rc1 Ne5 16.Ne5=+ Be5 17.Qc2 Qf6 18.Rcd1 Rfd8 19.Nd2 Qg6 20.Nf3 Bd4 21.Nh4 Qg5 22.g3 Bh3–/+ 23.Nf3 Qf6 24.Rfe1 Bg4?? 25.Nd4+– Be2 26.Ne2 g6 27.Nf4 Rd1 28.Rd1 Re8 29.Nd5 Qe5 30.f3 Kg7 31.Kf2 f5 32.Qe2 fe4 33.f4 e3 34.Ne3 Qc3 35.Nf5! gf5 36.Qe8 Qc2 37.Qe2 (37.Qe2 Qe2 38.Ke2+–) 1–0. wlittle (2035) – nickbarletta (1820), net–chess.com, 2002.

5.c4 Be7 6.h3 0–0 7.g4 Qd7 8.Be2 Nc6 9.a3 Nd4 10.Bd4 ed4 11.f4 Qc6 12.Bf3 Qb6 13.g5= Ne8 14.f5 Bd7=+ 15.f6 gf6 16.gf6 Bf6–/+ 17.h4 a5 18.b5 c6 19.a4 Qd8 20.Ne2 Bh4–+ 21.Kd2 Qg5 22.Kc2–/+ Bf2 23.Nd2? Nf6 24.Nb3 c5 25.Qf1 Be3–/+ 26.Qg2 Qg2–+ 27.Bg2 Ng4 28.Bh3 f5 29.ef5 Nf2 30.Rhg1 Kh8 31.Rg3 Rg8 32.Rf3 Nh3 33.Rh3 Rg2 34.Kd1? Bf5 35.Re3 de3 36.Nbc1 Rag8 37.Kc2 Bg4 38.Kd1 Rg1 39.Kc2 Be2 (39...Be2 40.Nb3 Ra1 41.Na1 Rg1–+) 0–1. Bacon – Wall,Bill, internet, 2005.

5.Nd2 Nbd7 6.Be2 Be7 7.Ngf3 c6 8.a4 0–0 9.0–0 Qc7 10.Rc1 Rac8 11.c3 Qb6 12.a5 Qc7 13.d4 Rfd8 14.Re1 h6 15.de5 (15.Bd3 b6=) 15...Ne5 (15...de5 16.Qa4=) 16.Ne5 (better is 16.Nd4!? Bd7 17.Qb3=) 16...de5–/+ 17.Qc2 c5 18.bc5 (18.b5 c4–/+ (worse is 18...Qa5 19.Ra1 Qb6 20.c4=)) 18...Qa5 19.Ra1 Qc5 20.Ba3 Qc7 (better is 20...Qc3!? 21.Qc3 Rc3 22.Be7 Rd2+=) 21.Be7+= Qe7 22.Ra7 Qc5 23.Rb7 Qc3 24.Qc3 Rc3 25.Nf1? (25.Nf3 Rc5 26.Rb5 Rdc8+=) 25...Rc2 (better is 25...Ne4!? 26.Bf3 Nc5–+) 26.f3 Ba2 27.Rb5 Re2? 28.Re2+– Rd1?? 29.Kf2 Bb1? 30.Re1 Rd2 31.Re2 Bd3?? 32.Rb8+– Kh7 33.Rd2 Bc4 34.Rc2 Be6 35.Rb5 Nd7 36.g3 Kg6 37.f4 Kf6 38.f5 1–0. Sokol,Piotr – Wyszomirski,Krzysztof (1710), Poland–sf u11 boys (MA+WM), 2007.

5.Nd2 Be7 6.g3 0–0 7.Ngf3 Qd7 8.Bg2 a6 9.0–0 Nc6 10.a3 Rad8 11.c4 Na7 12.d4+= ed4 13.Nd4 Bh3 14.N2f3 Bg4 15.Qc2 Nc6 16.Nb3 Rfe8 17.Kh1 Bf8 18.Ng1 Qe7= 19.f3 Be6 20.Nd4 Nd4 21.Bd4 c6 22.c5 dc5 23.Bc5 Qc7 24.Be3 Bd6 25.Qf2 Qe7 26.f4? Ng4 ˝–˝. Karpova,Tatyana – Bogdanova,Mariya, RUS–ch U10 Girls, 2004.

5.Ne2 Be7 6.Ng3 0–0 7.Be2 Nc6 8.a3 a6 9.0–0 Rc8 10.f4 ef4 11.Rf4= Qd7 12.d4+/– d5 13.e5 Ne8 14.b5 ab5= 15.Bb5 Qd8 16.Bc6 bc6= 17.Bc1 Bg5 18.Rf2 g6 19.Nc3 Ng7 20.Rb1 Qe7 21.Na4 Nf5 22.Nf5 Bf5 23.Rb7 Rb8 24.Bg5 Qg5 25.Rc7 Ra8? 26.c3 Rab8 27.Nc5?? Rb1–+ 28.Qb1 Bb1 29.e6 f5 30.e7 Re8 31.Ne6 Qe3 32.Nd8 Re7 33.Re7 Qe7 34.Nc6 Qa3 35.h3 Qc3 36.Ne7 Kf7 (36...Kf7 37.Nd5 Qd4–+) 0–1. 1805DYDIDIDY – Wormatia08, internet, 2005.

5.Nf3 (--> 3.e4 Be6 4.Nf3 Nf6 5.d3).

5.Nf3 Be7 6.Be2 0–0 (--> 3.Nf3 Nd7 4.d3 Be7 5.e4 0–0 6.Be2 Be6).

5.h3 Be7 6.Nf3 0–0 7.c4 h6 8.Nbd2 b6 9.d4= ed4 10.Bd4 c5=+ 11.bc5 dc5 12.Bf6 Bf6 13.Rc1 Nc6–/+ 14.e5 Re8–+ 15.Ne4 Ne5 16.Ne5 Bf5 17.Bd3 Re5 18.f3 Be4 19.fe4 Bh4 20.Ke2 Qd4 21.Rf1 Bg5 22.Rf3 f5! 23.Rf5 Qe3 24.Kf1 Rf5 25.ef5 Qc1 26.Qc1 Bc1 27.a4 Re8 28.h4 Bd2 29.Kf2 Be1 30.Kf3 Bh4 31.g4 Re1 32.Kf4 Bg5 33.Kg3 Re3 (33...Re3 34.Kf2 Rd3–+) 0–1. Kaczmarek,Michal – Hughes,Stephen, IECC, 1998.

4.d3 Be7

5.a3 0–0 6.Be2 Nc6 7.Nf3= a6 8.0–0 Bd7 9.c4 b6 10.b5 ab5= 11.cb5 Na7 12.a4 Bg4 13.h3 Bh5= 14.Nh2 Be2 15.Qe2 Nc8 16.f4 ef4 17.Rf4 Re8 18.Qf3 h6 19.e5 de5=+ 20.Rf6 Ra4?? 21.Rf7?? Ra1 22.Ba1+= Bf6 23.Rf6+/– gf6 24.Qf5 (24.Qf5 Kg7 25.Qg4 Kh7 26.Qh5+/–; better is 24.Ng4!? Kg7 25.Qg3+–) 1–0. 73DADDELDU37 – Peggy@, mySchach.de, 2005.

5.a3 0–0 6.Ne2 Nbd7 7.c4 c6 8.g3 d5 9.ed5=+ cd5 10.Bg2 e4 11.0–0 dc4= 12.dc4 b6 13.Nbc3 Bb7 14.Nf4 Qc7 =. carrafurca (2315) – rr (2320), net–chess.com, 2008.

5.b5 0–0 6.Be2 Bd7 7.c4 c6 8.a4 Re8 9.Nf3= h6 10.Nc3 Bc8 11.Qb3 Nbd7 12.Ba3 Rb8 13.Qc2 Nf8 14.0–0 Bd7 15.Rab1 Ne6 16.Qa2 Rc8 17.bc6 Bc6 18.Nb5 Bb5 19.ab5 Nf4 20.Rfe1 Qd7 21.Bf1 b6 22.Bb2 Rc7 23.Rbd1 Qg4= 24.Kh1 h5 25.Bc1 h4 26.Bf4 Qf4+= 27.Qe2 Nh7 28.g3 hg3 29.fg3 Qh6 30.Bg2 Bd8 31.d4 Bf6= 32.de5 de5 33.Rd6 Re6 34.Re6+/– fe6 35.Qd3 Rf7 36.Qd6 Be7 37.Qb8 Nf8 38.Qe5 Bf6 39.Qd6 g6 40.e5 Be7 41.Qd1 Rh7 42.Qe2 Qh5 43.Qe4 Rh6?? 44.Qa8 Rh7 45.Rf1 Qg4 46.Qa7 Qg3? 47.Qb6+– Nd7?? 48.Qe6 Kh8 49.Qd7 Qf4 50.Qe8 Bf8 51.Qg6 Bg7 52.Qe8 Bf8 53.c5 Re7 54.Qh5 Rh7 55.Qg5 Rh2 56.Kg1 Bc5 57.Rf2 Bf2 58.Kf2 Qg5 59.Ng5 Rh5 60.Nf7 Kg7 61.Bf3 Rf5 62.b6 Rf7 63.b7 Rf8 64.e6 Kf6= 65.Bd5 Ke7 66.Ke3 Kd6 67.Ke4 Re8 68.Kd4 Rb8 ˝–˝. Coombes,Fred – Robson,Chris, Civil Service Minor op, 2005.

5.Nc3 0–0 6.Nd5 Nd5–/+ 7.ed5 f5 8.d4=+ e4 9.f3 e3 10.Bd3 f4 11.Ne2 Nd7 12.0–0 a5 13.ba5 Ra5 14.g3 g5 15.gf4 gf4 16.Qe1 b6=+ 17.Nf4 Bh4?? 18.Qe3+/– Qg5 19.Ng2+– Qe3 20.Ne3 Nf6 21.Nf5 Bf5+/– 22.Bf5 Nd5 23.f4?? Kg7 24.Be4= Ne3 25.Rf3+/– Nf5 26.Bf5 Rff5 27.Rh3 Bf6 28.Rg3= Kf7 29.Rb1? Ra2–+ 30.c3 Rf4 31.Bc1 Rf5 32.Bh6 Rh5–+ 33.Be3 Rah2 34.Rf3?? Rh1 35.Kg2 Rb1 36.c4 Ke7 37.d5 Rb2 38.Kg3 Rbh2 39.Rf2 Be5 40.Kf3 R5h3 41.Ke2 Re3! (41...Re3 42.Ke3 Bd4 43.Kd4 Rf2–+) 0–1. bambinik – Guest9870, internet, 2001.

5.Nc3 0–0 6.Nf3 Bg4 7.a3 Nc6 8.Be2= Qd7 9.h3 Bf3=+ 10.Bf3 Nd4 11.0–0 g6 12.Ne2?? Nf3–+ 13.gf3 Nh5 14.Kh2=+ Bg5 15.Ng3?? Nf4–+ 16.Nf5 gf5 17.Rg1 h6 18.Qf1 Kh7 19.Bc1 Rg8 20.Bf4 Bf4 21.Kh1 Rg1 22.Qg1 fe4 23.Qg4 Qg4 24.hg4 ef3 25.Re1 Rg8 26.Rg1 b5 27.c3 a6 28.d4 e4 29.d5 Rg5 30.Rd1 Rg4 31.Rg1 Rh4 0–1. tradicio – The Enchanter, ChessWorld.net, 2005.

5.c4 0–0 6.Nf3 a6 7.a4 Bg4 8.Be2 c6 9.0–0 Qc7 10.Nh4 Be2 11.Qe2 Qd7 12.Nf5 g6 13.Ne7 Qe7 14.Nd2 Re8 15.h3 Nbd7 16.a5 Nf8 17.f4 Nh5 18.Rf3 Nf4 19.Qf2 N8e6 20.Rf1 c5 21.bc5 dc5?? 22.Be5+/– g5 23.Bf4 Nf4 24.Rg3 Ne6 25.h4 h6 26.hg5 Ng5 27.Qf6 Qf6 28.Rf6 Kg7 29.Rf5 f6 30.Rc5 Kg6 31.Rc7 Rab8 32.Nb3 Kh5? 33.Nc5+– Kh4 34.Kh2 Re5 35.Rb7 Rb7 36.Nb7 Ne6 37.Rh3 Kg5 38.Rf3 h5 39.g3 Nd4 40.Rf2 Nb3 41.Ra2 Re7 42.Nd8 Nc5 43.Ra3 Rd7 44.Nc6 Nd3 45.Nb8 Rd6 46.Rb3 Nc5= 47.Rb6 Rb6 48.ab6+/– a5 49.Nc6 a4 50.Nb4 h4 (better is 50...a3!?+/–) ˝–˝. hal1958 – mrchess, playchess.de, 2003.

5.c4 0–0 6.Nf3 b6 7.Be2 Bb7 8.0–0 c5 9.b5 a6 10.Nc3 ab5 11.cb5 Nbd7 12.a4 Ne8 13.Qd2 h6 14.h3 f5 15.Nd5 Bd5 16.ed5 Nc7 17.d4 Nd5?? (better is 17...cd4 18.Bc4 Qe8–/+) 18.de5 Nb4 19.ed6 Bf6 20.Bc4 Kh8 21.Bf6 Qf6 22.Rfe1 Rae8 23.Rf1 Re4 (23...Ra8 24.Rae1 Rfe8+–) 24.Rac1+/– Rfe8 25.a5 ba5 26.Bb3 Re2 27.Qf4?? (better is 27.Rfe1 Re1 28.Re1+=) 27...Nd3–/+ 28.Qa4 Nc1 29.Rc1 Rb2 30.Bc4 Ree2?? (better is 30...Nb6!? 31.Qa5 Qd6–+) 31.Qa5 Rf2–/+ 32.Qa8 Kh7?? 33.Ne1 Qd4 34.Qg8 Kg6 35.Qf7 Kh7 36.Qg8 Kg6 37.Qf7 Kh7 38.Qg8 ˝–˝. Billion,Paul – Secondi,Alberto, SN–2011–0–00325, 2011.

5.c4 a5 6.b5+= b6 7.Ne2 Nbd7 8.Ng3 Nc5 9.Nh5 (9.Nc3 h5+=) 9...0–0 (better is 9...Nh5!? 10.Qh5 0–0–/+) 10.Nf6+= Bf6 11.Be2 Ne6 (11...a4 12.0–0+=) 12.Nc3= Nf4 13.Bf3 Bd7 14.g3 Ne6 15.Nd5 Nc5 16.Ba3 Be6 17.Ne3 (17.0–0 Bg5+=) 17...Bg5 18.Bc5 dc5 19.Nd5 Bd5 20.cd5 a4 21.Rb1 Ra5 22.0–0 Qd6 (22...Qe8 23.Bg4=) 23.Qc2 a3 24.Qc4 Rc8 25.Bd1 Rd8 26.Rb3 g6 27.Qc3 Rda8 28.Rb1 h5 29.h4 Bf6 30.Qc4 Kg7 31.Kg2 Qe7 32.Bb3 Qd6 33.f3 Rf8 34.Bd1 Qd7 35.Be2 Rfa8 36.Rb3 Ra4 37.Qc3 Qe7 38.Bd1 R4a5 39.Rb1 Qd7 40.Qc4 Rh8 41.Rh1 Qd6 42.Be2 Be7 43.Rhf1 Bf6 44.Rb3 Qd7 45.Rh1 Qd6 46.Qc1 Rha8 47.g4 hg4 (47...Kh7 48.Rf1=) 48.fg4+= Qd7 (48...Qd8 49.Qe1 Kg8 50.Qf2+=) 49.Qc3 (49.h5 Rh8+= (49...Rb5?? 50.Rb5 Rh8 51.h6 Kg8 52.Rb3+–)) 49...Qd6 50.g5 Be7 51.Rf1 f6 52.gf6 Bf6 53.Bg4 (53.h5 Rh8=) 53...Rh8 54.h5 gh5 55.Be6 Rh6 56.Rbb1 Rg6 57.Kh1 Ra8 58.Rg1 Rg5 (58...Qe7 59.Qd2=) 59.Rbf1 Rf8 60.Qd2 Qe7 61.Qe3 Kg6 62.Qf2 (62.Qc1!?=) 62...Rg1+= 63.Rg1 Bg5 64.Bf5 Kh6 65.Rg2 Rf7 66.Qf3 Rg7 67.Rh2 Attacks the backward pawn on h5 67...h4 68.Qg4 Qf6 69.Rh3 Re7 70.Rh2 Re8 71.d4?? (better is 71.Rg2–/+) 71...ed4–+ 72.e5?? (72.Qg3 Re7 73.Qd3–+) 72...Qe7 (better is 72...Re5 73.Rf2 Re3–+) 73.Rh4 1–0. Lin Naing Oo – Ar Kar, Zaw Win Lay Myanmar Open, 2014.

5.Nd2 0–0 6.Ngf3 a6 7.Be2= Nc6 8.a3 Ne8 9.h3 f5 10.d4 ed4 11.Nd4 Nd4 12.Bd4 Bf6 13.Bc4 Kh8=+ 14.Nf3 fe4–+ 15.Nh2 Bd4 16.Qd4–/+ Qf6 17.0–0–0 Qf2?? 18.Qe4?? Bf5 19.Qe2 Qe2 20.Be2 Rc8 21.Rhf1=+ g6?? 22.g4+/– Bc2? 23.Rf8+– Kg7 24.Rdf1 Bb3 25.g5 h6 26.gh6 Kh6 27.Rh8 Kg7 28.Rff8 Ba4 29.Rhg8 Kh7 30.Bd3 c5 31.Bg6 Kh6 32.Ng4 Kg5 33.Bf5 Kh4 34.Bc8 Nc7 35.Nf6 cb4 36.Rg7 Be8 37.Rh8 Bh5 38.Rh5# 1–0. Rocha,Katiucia – Batistoni,Mariane, Catarinense–ch (Women), 2003.

5.Nd2 0–0 6.Ngf3 Ne8 7.Be2 f5 8.ef5 Bf5=+ 9.0–0 Nf6 10.Nc4 Nbd7 11.Ne3+= Bg6 12.Ng5 Nd5 13.Ne6 Ne3 14.Qc1 Qe8 15.Qe3+– Qf7 16.Nf8 Rf8 17.Qa7 Bh4 18.Bf3 d5 19.Qb7 e4 20.de4 de4 21.Be4 Bf2 22.Kh1 Qf4 23.Bg6 hg6 24.Qd5 Rf7 25.Rad1 (25.Rad1 Nf6 26.Bf6 gf6 27.Rd2 Qb4 28.Rdf2+–) 1–0. Matejka,Petr – Vacovska,Veronika, Pardubice op2, 1994.

5.Nd2 Nc6 6.c3 =+.

5.Nd2 Be6 6.Ngf3 h6 7.d4 ed4 8.Nd4 0–0 9.Bd3 d5 10.e5+= Nfd7 11.N4f3?? Bb4–/+ 12.0–0 c5 13.c3 Ba5 14.Bc2 Nc6 15.Re1 Bc7–+ 16.c4 d4 17.Qe2 Nce5 18.Ne5 Ne5 19.Nf3?? Nf3 20.Qf3 Qd6 21.g3 Bc4 22.Qe4 f5 23.Qh4 Bd8 24.Qh5 d3 25.Bb3 Bb3 26.ab3 Bf6 27.Bf6 Qf6 28.Rad1 Qf7 29.Qf3 Qb3 30.Rd3 Qf7 31.Red1 b6 32.Rd7 Qf6 33.Qb7 Rfd8?? 34.R1d6+– Rd7 35.Qa8 Kf7?? 36.Rf6 Kf6 37.Qf8 Ke6 38.f4 a5 39.Qb8+– Rd6 40.Qe8 Kd5 41.Qe5 Kc6 42.Qg7 c4 43.Qc3 Kc5 44.Qe5 Rd5 45.Qe3 Kb5 46.Qc3 a4 47.Qb2 Kc5 48.h3 b5+= 49.Qa3 Kd4 50.Kf2 c3 51.Ke2 Kc4 52.Qa2 Kc5 53.Ke3 Rd2 54.Qa3 Kc4= 55.Qe7 Kb3 56.Qf7+= Kb2? 57.Qf5?? b4–+ 58.Qb5 b3 59.f5 Rd1 60.Qa4 c2 (60...c2 61.Ke4 c1Q–+) 0–1. willow27 – bcholy, ChessWorld.net, 2005.

5.Nd2 Be6 6.Ngf3 h6 7.d4= ed4 8.Nd4 Bg4 9.f3 Bh5 10.Be2 Bg6 11.Bd3 Nbd7 12.f4 0–0 13.N4f3 Bh5 14.0–0= Re8 15.h3 Bf3 16.Qf3+= Bf8 17.Kh1 Rb8 18.Rae1 c6 19.c4 a5+= 20.a3 Ra8 21.e5 de5 22.fe5+– Nh7? 23.Qf7 Kh8 24.Qg6 Ng5 25.h4 Re6 26.Qf5 Be7?? 27.hg5 Nf8 28.Qe4 Ng6 29.gh6 gh6 30.Qg4 Qg8 31.Bf5 Bg5 32.Be6 Qd8 33.Ne4 ab4 34.Ng5 hg5 35.Qh5 (35...Kg7 36.Rf7 Kg8 37.Qh7#) 1–0. Blakmoor,B – Van der Heyden,S, Vlissingen op, 1996.

5.Be2 0–0 6.Bc1 b6 7.f4 Nbd7 8.f5 Bb7 9.Nd2 d5 10.Ngf3 de4 11.de4 c5 12.a3 cb4 13.ab4 Bb4 14.0–0 Nc5 15.Bd3 Nce4 16.Ne5?? Bc5 17.Kh1 Nf2 18.Rf2 Bf2 19.Ndf3 Re8 20.Qe2 Bc5 21.Be3 Be3 22.Qe3 Ng4! 23.Qf4 Ne5 24.Ne5 Qf6 25.Ng4 Qa1 (26.Bf1 Re4 27.Nh6 gh6–+) 0–1. eds – topolov, Live Game Caissa's Web, 2004.

5.Be2 0–0 6.Bc1 d5!? –/+.

5.Be2 0–0 6.Nf3 Na6 =+.

5.Be2 0–0 6.Nf3 c6 7.0–0 Na6 8.a3= h6 9.h3 Be6 10.Nbd2 Nc7 11.a4 a5= 12.ba5 Ra5 13.Nb3 Ra8 14.Bc1 Kh7 15.Be3 Qd7 16.Qd2 Ng8 17.Rfb1 f5= 18.ef5 Bf5 19.c4 Rf6 20.Kh2 Raf8 21.Rf1 Bh3–/+ 22.Nh4 Bg4 23.Bg4 Qg4–+ 24.g3 g5 25.Ng2–/+ Ne6 26.Na5 Nd8 27.Rab1 R6f7 28.Nb7 Nb7 29.Rb7 h5 30.a5 h4 31.gh4 gh4 32.a6? h3?? 33.Ne1+= Bh4 34.Rf7 Rf7 35.a7 Qc8 36.Qd1 Nf6 37.Rg1+– c5 38.Nf3 Ng4 39.Rg4! Qg4 40.Ng5!! Bg5 41.Qg4 (41.Qg4 Ra7 42.Qh5 Kg8 43.Qg5 Kf7 44.Qh5 Kg8 45.Qg6 Rg7 46.Qd6+–) 1–0. fatou – Chris, playchess.de, 2002.

5.Be2 Nc6 6.c3 a6 7.Nf3= Be6 8.Ng5 Qd7 9.Ne6 Qe6 10.0–0 0–0 11.Nd2 h6 12.a4 d5 13.f4 ef4 14.ed5 Nd5=+ 15.Rf3? Ne5–+ 16.Rh3 Ne3 17.Qb1–/+ Qg6 18.Bf1 Nf1 19.Qf1 Qg4 20.d4 Ng6 21.Re1 Bf6 22.Bc1 Rfe8 23.Nf3 b6 24.Bd2 c5 25.Re8= Re8 26.Be1? cd4–+ 27.Qa6? dc3 28.Qc4 Ne5 29.Ne5 Be5 30.Bc3 Qd1 31.Kf2 Bc3 32.Rc3 Qe1 33.Kf3 h5 34.Rc2 Qe4 (34...Qe4 35.Qe4 Re4 36.Rc8 Kh7 37.Ke4 f3 38.gf3 f5 39.Ke5 g5 40.Kf5 g4 41.fg4 Kg7 42.g5 h4 43.g6 h3 44.Rc7 Kf8 45.g7 Kg8 46.Kg6 b5 47.Rc8#; 34...Qe3#) 0–1. Godinot,Bernard (1780) – Dejonckheere,Didier (1860), corr AJEC/5125, 2001.

5.Be2 Nbd7 6.a3 d5 7.ed5 Nd5 (7...a5 8.b5 Nd5 9.Nf3 Bd6 10.0–0 0–0 11.Nbd2 Re8 12.Re1 Nf4=) 8.Nf3 Bf6 9.Nbd2 (9.0–0 0–0 10.Nbd2 a5 11.b5 c6 12.bc6 bc6=) 9...0–0 (9...a5 10.b5 0–0 11.Ne4 c6 12.bc6 bc6=) 10.Ne4 Re8 (10...a5 11.b5 c6 12.bc6 bc6=) 11.c4 (11.0–0 a5 12.b5 Nf4=) 11...Nf4 12.0–0 b6 13.Ng3 Bb7 14.Qc2 c5 15.Ne4 Be4 16.de4 Ne6 17.Rad1 Nd4 18.Qd3 Qc7 19.h3 Nf8 20.Nh2 Nfe6 21.Ng4? (better is 21.Bd4 ed4 22.Ng4+=) 21...Nf4–+ (21...Ne2?! 22.Qe2 Qe7 A) 23.Ne5? Nf4 (23...cb4?! 24.Rd7 Nf4 25.Qd2=) 24.Qg4 Be5–+; B) 23.Nf6?! Qf6 24.Qg4 cb4=; C) 23.bc5 bc5 24.Qf3+= (24.Ne5? Nf4 25.Qg4 Be5–+; 24.Nf6?! Qf6 25.Qh5 Nd4+=)) 22.Nf6 gf6 23.Qe3 Nde2 24.Kh2 Nd4 25.g3 Nfe6 26.Qh6 (26.b5 a6–+) 26...Qe7 (26...cb4 27.Qf6 Qc4 28.Bd4 ed4 29.ab4 Qb4 30.Qf3–+) 27.f4 Qf8 (better is 27...cb4 28.Bd4 ed4–+) 28.Qf6 Qg7 29.Qh4 f6 30.Bc1 Rad8 31.fe5 fe5 32.Bh6 Qe7 33.Qg4 Kh8 34.Qh5 Ng7 35.Qg4 Rd6 36.Bg5 Qe6 37.Qe6 Rde6 38.Rf7 Kg8 39.Rdf1 Rg6 40.Bh4 Nge6 41.Ra7 Rg7 42.Rg7 Ng7 43.Rf6 Re6 44.Rf2 cb4 45.ab4 Rc6 46.Be7 Nge6 47.c5 bc5 48.bc5 Nc5 49.Bc5 Rc5 50.g4 Rc2 51.Rc2 Nc2 52.Kg3 Kg7 53.g5 Kg6 54.h4 Kh5 55.Kh3 Ne3 56.Kg3 Nc4 0–1. Sukopcak,M (1705) – Haring,Filip, 3rd Senica Open, 2011.

5.Be2 Be6 6.Nf3 h6 7.h3 Na6 (7...a6 8.Nbd2 Nc6 9.a3 0–0 10.0–0 Qe8 11.c4 Rd8 12.d4 ed4=; 7...0–0 8.0–0 c6 9.Nbd2 Qb6 10.c3 Nbd7 11.d4 a5 12.b5 ed4=; 7...Nbd7 8.0–0 0–0 9.Nbd2 a5 10.b5 Nc5 11.c4 a4 12.Qc2 Nh5=; 7...a5 8.b5 Nbd7 9.0–0 0–0 10.Nc3 a4 11.d4 a3 12.Bc1 c6=; 7...c6 8.0–0 0–0 9.Nbd2 Qb6 10.c3 Nbd7 11.d4 a5 12.b5 ed4=) 8.a3 (8.c3 0–0 9.Nbd2 c5 10.a3 Qb6 11.0–0 Rac8 12.d4 ed4+=) 8...c5 9.b5 (9.c3 0–0 10.Nbd2 Qb6 11.d4 ed4 12.cd4 cb4=) 9...Nc7 (9...Qa5 10.Nc3 Nc7 11.a4 0–0 12.0–0 a6+=) 10.a4 (10.c4 0–0 11.0–0 a6 12.a4 ab5=) 10...b6 (10...0–0 11.0–0 b6 12.c4 a6=) 11.c4 (11.Nc3 0–0 12.0–0 a6=) 11...a6 12.Nbd2 (12.0–0 0–0=) 12...0–0 13.Nh2 ab5 14.ab5 Ra1 15.Qa1 Qa8 16.0–0 Qb7 17.Nhf3 Nh5 18.Qd1 Nf4 19.Kh2 Qc8 20.Ng1 f5 21.Bc3 fe4 22.de4 Rf6 23.Ndf3? (better is 23.Bg4+=) 23...Rg6–+ 24.Ne1 Ne8 (better is 24...Qa8 25.Qc2 Ne2 26.Ne2 Bc4–+) 25.Bd2+= Ne2 26.Qe2 Nf6 27.Nef3 Kh7 ˝–˝. Nestorenko,Dmitry – Radevich,Yuriy, New Years All–Ukrainian Open, Poltava UKR, 2009.

5.Ne2 a5 6.b5 c6 7.c4 cb5 8.cb5 a4 9.g3 Bd7 10.Nbc3 0–0 11.Bg2 Be6 12.0–0 Nbd7 13.f4 Nc5 14.f5 Bd7 15.g4 h6 16.h4 b6 17.g5 hg5 18.hg5 Nh7 19.g6+= fg6 20.fg6 Rf1 21.Qf1 Nf6 22.Ng3 Bg4?? 23.Bh3?? Qd7?? 24.Nf5+– Bh3 25.Qh3 Rf8 26.Nd5 Nd5 27.Qh7 1–0. slavisa11 – oo1oo, Live Game Caissa's Web, 2004.

5.Nf3 (--> 3.Nf3 Nf6 4.d3 Be7 5.e4).

5.Nf3 b6 6.Be2 0–0 (--> 3.Nf3 Nf6 4.d3 Be7 5.e4 0–0 6.Be2 b6).

5.Nf3 Bg4 6.Be2 0–0 (--> 3.Nf3 Nd7 4.d3 Be7 5.e4 0–0 6.Be2 Be6).

5.g3 a5 6.ba5 Ra5 7.Qd2 c5 8.Bg2 Qb6 9.c4 Nc6 10.Ne2 0–0 11.0–0 Bg4 12.Nbc3 Rfa8 13.Nd5 Nd5 14.cd5 Rb5 15.Bc3 Nd4 16.Bd4 cd4 17.f3 (17.Rfc1!?+=) 17...Rb2–/+ 18.Qe1 Bd7 19.f4 Raa2 20.Ra2 Ra2 21.fe5 (21.Qf2!? Bf6 22.Rc1–+) 21...de5–+ 22.Nc1 Rc2 23.Ne2 Bg5 24.h4 (24.Kh1–+) 24...Be3 25.Kh1 h5 26.Bf3 Bh3 27.Bg2 (27.Bh5 g6 28.Bf3 Bf1 29.Qf1–+) 27...Bg4 28.Bf3 (28.Rf3–+) 28...Bf3 29.Rf3 Qb2 (29...Qb2 30.Rf2 Bf2 31.Qf2 Re2–+) 0–1. Liasko,E (1975) – Aharon,O (2090), Open, Herzliya ISR, 2008.

4.d3 g6

5.a3 Bg7 6.Nf3 Bg4 7.Be2 Bf3 8.Bf3+= 0–0 9.Nd2 Nc6 10.c3 Re8 11.Nb3 d5 12.Nc5 de4 13.Be4 Ne4= 14.de4 Qd1 15.Rd1+= b6 16.Na6 Rac8 17.0–0 Nb8 18.Nb8+/– Rb8 19.Rd7 Rbc8 20.Rfd1 Kf8 21.c4 Re7 22.a4 Rd7= 23.Rd7 Ke8 24.Rd5 f6 25.f3 Rd8 26.Kf2+= c6 27.Rd8 Kd8 28.g3 Bf8 29.Bc3 Kd7 30.f4 Ke6 31.Kf3 Bd6 32.h4 h5 33.fe5 Be5 34.Bd2 a6 35.g4 b5 36.ab5 ab5 37.gh5 gh5 38.c5 f5 39.Be1 fe4 40.Ke4 Bf6 41.Kf4= Be7 42.Kg3 Kf5 43.Bd2 Bf6–+ 44.Be1 Be5 45.Kf3= Bd4 46.Bd2 Bf6 47.Be1 Be5?? 48.Ke3?? Bb2 49.Kd3? Be5?? 50.Ke3 Bc7 51.Kd4? Bf4 52.Kd3 Be5?? (better is 52...Bh6–+) ˝–˝. euforia (1770) – alexkli (1660), internet, 2007.

5.Bc1 Bg7 6.f4 Bg4 7.Be2=+ Be2 8.Qe2 Nc6 9.fe5 Ne5 10.Nf3 Qe7 11.Bb2 Nfd7 12.0–0?? 0–0 13.Ne5+= de5 14.Nd2 Qb4= 15.Rab1 Qc5=+ 16.Kh1 Qc2 17.Rfc1 Qa4 18.Rc7 Rfd8 19.Rb7 Qa2 20.Ra1=+ Qe6 21.Raa7 Ra7= 22.Ra7 Rb8 23.Ba3 Nf6 24.Qf1 Ng4 25.h3 Nf6 26.Nc4 Nd7 27.Bd6 Rb3 28.Ra8 Nf8 29.Bf8 Bf8= 30.Ne3 h5 31.Nd5 Kg7 32.Qd1 Bc5?? 33.Qb3+– Qc6 34.Ra1 Bd4 35.Rb1 Qd7 36.Qb7 Qb7 37.Rb7 Kh6 38.g3 f5 39.ef5 gf5 40.Rf7 Kg5 41.Rg7 Kh6 42.Rf7 Kg6?? 43.Rf6+– Kg5 44.h4 Kg4 45.Kg2 e4 46.Rg6# 1–0. wood – shanadip31, Live Game Caissa's Web, 2005.

5.Nd2 Nc6 6.b5 Nd4 7.c3 =.

5.Nd2 Bg7 6.Be2 0–0 7.Ngf3 Nc6 8.b5 Ne7 9.0–0 Ne8 10.c4 h6 11.Ne1 f5 12.ef5 Nf5 13.a4 Nd4 14.Bg4 g5 15.Ne4 Bg4 16.Qg4 Nf6 17.Nf6 Qf6 18.Bd4 ed4 19.Nf3 Qg6 20.Rad1 Rf4 21.Qg3 Raf8 22.Rfe1 Qf5 23.Rd2?? g4?? 24.Nh4=+ Qg5 25.Rde2 Be5 26.Re5 de5 27.Rf1? Kh7 28.f3 gf3 29.Nf3 Qg3 30.hg3 R4f5 31.Re1 Rg8 32.Nh4 Rfg5 33.Kf2 Rg3 34.Re5 Rd3 35.Nf5 Rf8 36.g4 Rd2 37.Kf3 Rd1 38.Ke2 Rg1 39.Re4 Rg4 40.Rg4–/+ Rf5 41.Rd4 Kg6 42.a5 a6 43.b6 c6 44.Rd7 Rf7 45.Rd8 h5 46.Rg8 Kh6 47.Rh8 Rh7 48.Rc8 h4 49.Kf3 h3 50.Kg3 Kg5 51.Kh2 Kf6 52.Rc7 Kg6 53.c5 Rf7 54.Kh3 Kf6 55.Kg4 Ke6 56.Rf7 Kf7 57.Kf5 Ke7 58.Ke5 Kd7 59.Kf6 Kd8 ˝–˝. Schmidt,Thomas (1650) – Von Wantoch Rekowski,Thomas (1775), Kreuzberg, 2000.

5.Nd2 Bg7 6.Ne2 0–0=+ 7.g3 Be6 8.Bg2 Nbd7 9.0–0= d5 10.d4 de4 11.de5 Ng4 12.Nd4 Nge5 13.Ne6 fe6 14.Ne4 Nf3 15.Bf3 Bb2 16.Rb1 Bg7 17.Bg2 Qe7 18.Qg4 c6 19.Qg5 Rae8 20.Rbd1 Ne5 21.Qe7 Re7 22.Rfe1 h6 23.Re2 Nf3 24.Bf3 Rf3 25.Rd8 Rf8 26.Red2 Be5 27.R8d7 Rff7 28.R7d3 g5 29.h3 Kg7 30.Kf1 Kg6 31.Ke2 (31…h5 32.c4+=; 31.c4 h5+=). Honos,A – Siklosi,Z, Hungary tt, 1997.

5.Nd2 Bg7 6.Ngf3 0–0 =.

5.Be2 Bg7 6.Bc1 0–0 7.c3 Be6 8.f4 Nbd7 9.Nh3 Nb6 10.Ng5 Bd7 11.0–0 ef4 12.Bf4 c5 13.bc5 dc5 14.c4?? Bc6 15.Nc3?? Nbd7?? 16.Nd5 Nd5 17.ed5 Ba1 18.Qa1 Ba4 19.Be5?? f6 20.Ne6= Qe7 21.Nf8?? fe5?? 22.Nd7 Qd7? 23.Qe5+/– Rf8 24.Rf8+– Kf8 25.Qh8 Ke7 26.Qh7 Kd8 27.Qg8 Kc7 28.Qg6 b5 29.Bg4 Qe7 30.Qc6 Kb8 31.Qc8 1–0. var – Schnick, Live Game Caissa's Web, 2004.

5.Be2 Bg7 6.Nf3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.d3 0–0 5.e4 d6 6.Be2 e5).

5.Nf3 Be6 =.

5.Nf3 Bg7 6.c4 0–0 7.Be2 c6 8.0–0 Nh5 9.Nfd2 Nf4 10.Nc3 f5 11.a4 Be6 12.b5 d5 13.cd5 cd5 14.ed5 Ne2 15.Qe2 Bd5 16.Nd5 Qd5 17.Rfe1 Nd7 18.Nf3 Rfe8 19.Rac1 Rad8 20.Rc7 Nc5 21.d4 ed4 22.Qd2?? Re1 23.Qe1 Qd6 24.Re7 Ne4 25.Re4?? fe4–+ 26.Qe4 Qd5 27.Qd5 Rd5 28.Kf1 d3 29.Bg7 Kg7 30.Ke1 Kf6 31.Kd2 Kf5 32.h3 a6 33.Ne1 ab5 34.ab5 Ke4 35.f3 Kd4 36.b6 Kc4 37.f4 Rd6 38.Nf3 Rb6 39.Ne5 Kd4 40.Nf3 Ke4 41.Ng5 Kf4 42.Nh7 Rb2 43.Kd3 Rg2 44.Nf8 Rg3 45.Kd4 g5 46.Ng6 Kf3 47.Ne5 Kg2 (48.Nf7 Kh3–+) 0–1. hal1958 – Anatolian, playchess.de, 2004.

5.Nf3 Bg7 6.Nbd2 0–0 7.c4 b6 8.g3 Bb7 9.b5 a6 10.a4 Nbd7 11.Nb3 Qe7 12.Ba3 12...Ra7 13.Bg2 Rfa8 14.Qc1 ab5 15.ab5 Qe8 16.0–0= Rd8 17.Qc2 Raa8 18.Bb4 Bh6 19.Bd2 Bg7 20.Rfb1 Ra1 21.Ra1 Ra8 22.Qb2 Qd8 23.h3 Qe8 24.Ra3 Qd8 25.Be3 Qe8 26.Bf1 Qc8 27.Nbd2 Nf8 28.Qa2 Ra3 29.Qa3 Qb8 30.Kh2 Bc8 31.Ng1 Ne8 32.Qa2 Be6 33.h4 h6 34.Bh3 Kh7 35.Be6 Ne6 36.Ndf3 Bh8 37.Ne2 Nf6 38.Kh3 Qc8 39.Qa6?? Qd7 40.Kg2= Ng8 41.Qa7 Nc5 42.Bc5 dc5 43.Nc1 Bf6 44.Nh2 Be7 45.Nf1 Bd6 46.Ne3 Kg7 47.Qb7 Nf6 48.f3 Ne8 49.Nd5 Nf6 50.Ne3 h5 51.Ne2 Qd8 52.Nc3 Ne8 53.Ncd5 Kh7 ˝–˝. Kurnatowski,Vitali – Karbalaie,Ramin, Hessen–ch U14, 2005.

5.Nf3 Bg7 6.Be2 0–0 7.0–0 Nh5 8.d4 f6 9.h3 Nf4 10.Bc4 Kh8 11.Nbd2 g5 12.Nh2 Nc6 13.de5 fe5 14.a3 Ne7 15.Ndf3 Neg6 16.a4 Qf6=+ 17.Ra3 h5 18.Ne1 Kh7 19.Kh1 c6 20.g3+/– Nh3 21.Qh5 Bh6 22.Rf3 Qg7? 23.Rf8 Qf8= 24.Ng4?? Bg4–+ 25.Qg4 Nf2 26.Rf2 Qf2 27.Qd7 Kh8 28.Qd6? Qe1 29.Kh2 Rf8 30.Be5= Bg7 31.Qg6 Rf2 32.Kh3 Qh1 33.Kg4 Qd1 34.Kg5 Qd8 35.Kg4 Qd7 36.Be6 Qd1 37.Kg5 ˝–˝. Pietrzak,Wieslaw – Kumor, Krakow, 2000.

5.Nf3+= Bg7 6.Be2 0–0 7.Nbd2 Nh5 8.Nf1 (8.0–0 Nf4+=) 8...Nf4 9.Ne3 Nc6 10.c3 f5 11.0–0 Ne7 12.c4 Nc6 13.b5 (13.Nd5!?=) 13...Nd4 (13...fe4 14.de4 Nd4 A) 15.Nd4? ed4 16.Nd5 d3 17.Nf4 de2 (17...Bb2?! 18.Nd3 Ba1 19.Qa1–/+; 17...Rf4?! 18.Bg7 de2 19.Qe2 Kg7 20.Qe3–+) 18.Qe2 Bb2 19.Qb2 Rf4–+; B) 15.Bd4 ed4 16.Nd5–/+) 14.Nd4 ed4 15.Nc2? (15.Nd5 fe4 A) 16.de4? d3 17.Nf4 de2 (17...Bb2?! 18.Nd3 Ba1 19.Qa1–/+; 17...Rf4?! 18.Bg7 de2 19.Qe2 Kg7 20.Qe3–+) 18.Qe2 Bb2 19.Qb2 Rf4–+; B) 16.Nf4 Rf4 17.Qb3 ed3 18.Qd3–/+) 15...fe4–+ 16.g3 Ne2 (better is 16...Nh3!? 17.Kg2 Ng5–+) 17.Qe2–/+ ed3 18.Qd3 Bf5 19.Qd2 Bc2 20.Qc2 d3 21.Qd2 (21.Qd3 Bb2 Discovered attack (21...Bb2 Deflection)) 21...Bb2 22.Qb2 Rf3 (22...Qf6!? 23.Qf6 Rf6+=) 23.Qd4+= Qg5 24.Rad1 Qf5 (24...Qc5 25.Rd3 Qd4 26.Rd4+=) 25.Rfe1= Rf8 26.Re7 Rf6 27.Rd2 Qg5 28.Re3 Re3 29.Qe3 Qe3 30.fe3 Kf7 31.Rd3 Ke6 32.Ra3 Rf7 (32...a6 33.ba6 ba6 34.Ra6=) 33.Ra7+= b6 34.a4 (34.Kg2 d5 35.Ra4 Rf5+=) 34...d5 35.cd5 Kd5 36.Ra8 (36.h4 h5+=) 36...Kc5 (36...Ke4!?=) 37.Re8 Kc4 38.Kg2 Kb4 39.Re4 Ka3 40.h4 Kb3 41.g4 (41.Rd4 Kc3+=) 41...Kc3 (41...h6 42.Rf4 Rd7 43.Kf3+=) 42.Rf4 Re7 43.Kf3 Kb3 44.Rd4 Kc3 45.Kf4 Rf7 46.Kg5 Re7 47.Kh6 Re3+= 48.Rd7 Re4 49.Rc7 Kb4 50.Kg5 Ka4? 51.Rh7+– Kb5 52.Rg7 Kc5? 53.Rg6 b5 54.h5 b4? 55.h6 b3 56.h7 b2 57.h8Q b1Q 58.Qc3 Kd5 59.Qc6 Kd4 60.Rd6 Ke3 61.Qc3 Kf2 62.Rd2 Re2 63.Qd4 Kf3 64.Qf4 1–0. Luht,Vello – Tominga,Ago (1900), Viljandi EST, Ilmar Raud Mem, 2014.

5.f4 ef4 6.Ne2 Bg4 7.h3 Bh5 8.Qd2 Be2 9.Be2= Bg7 10.c3 0–0 11.0–0 Nbd7 12.Qf4+= Qe7 13.Nd2 Nd5=+ 14.ed5 Qe2 15.d4 Nb6 16.Rf2 Nd5 17.Qf7=+ Rf7 18.Re2 Nf4 19.Re3 Bh6 20.Rae1 Raf8 21.Nc4? b5 22.Nd2? Ng2!–+ (22...Ng2 23.Kg2 Rf2 24.Kg3 Be3 (24...Rd2?! 25.R3e2–+) 25.Re3 Rd2–+) 0–1. Barviks – Koblencs,Aleksandrs, Riga–ch, 1958.

5.g3 Bg7 6.Bg2 0–0 7.c4 a5 8.b5= b6 9.Ne2 Nbd7 10.0–0+= Nc5 11.Nbc3 Bd7 12.Na4 Na4 13.Qa4 Bc8 14.d4 Nd7 15.Qd1 Bb7 16.Re1 ed4 17.Nd4 Nc5 18.Qc2 Re8 19.f3 Ne6 20.Ne6+= fe6 21.Bg7 Kg7 22.e5 de5 23.Rad1 Qf6 24.c5 Bd5 25.Qc3 e4 26.Qf6+/– Kf6 27.fe4 Ba2 28.e5 Kg5 29.h4 Kh6 30.Ba8 Ra8 31.Rd7 Bd5 32.Rf1 (32.Rf1 bc5 33.Rff7+–; 32.c6 a4+–) 1–0. Belov,Vladimir (2560) – Strive, Canarias en Red prel 2nd blitz, 2004.

5.h3 Bg7 6.a3 0–0 7.Nc3 Nc6 8.Nf3 Ne8 9.Nd5 f5 10.Bc1 h6 11.Be2 fe4 12.de4 Ne7 13.Bc4 Kh7 14.Ng5 hg5–+ 15.Bg5 Nf6 16.Ne7 Qe7 17.Qd3 a6 18.Qg3 Be6 19.Qh4 Kg8 20.Be6 Qe6 21.0–0 Kf7 22.Bf6 Qf6 23.Qg3 Rac8 24.Qb3 Qe6 25.c4 b5 26.Rac1 Bh6 27.Rc2 g5 28.a4 bc4 29.Rc4 d5?? 30.ed5+/– Qd5?? 31.Rd1 Qe6= 32.Qd3 Kg8 33.Rg4 Rf4 34.Rg3 Rd4 35.Qe2 Rcd8 36.Rd4 Rd4 37.Re3 e4 38.b5 g4 39.Rg3 e3 40.ba6 ef2 41.Kf1 Qe2 42.Ke2 Rd2 43.Kf1–/+ Rd8 44.Rg4 Kf7 45.Kf2 Ra8 46.Rc4+= Ra7 47.Rc6 Ke7?? 48.Rh6+– Kd7 49.Kf3 c6 50.Ke3 (50…Ra6 51.Rh4+–; 50.Rh7 Kc8 51.Ra7 c5 52.g4 c4 53.g5 c3 54.g6 c2 55.g7 Kb8 56.Rb7 Kc8 57.g8Q) 1–0. PoPer – pelaton, Live Game Caissa's Web, 2004.

4.Bd3 Nc6

5.a3 Bg4 6.f3 Be6 7.Ne2 Be7 8.Bb5 a6 9.Bc6 bc6 10.d4 ed4 11.Nd4 Rg8? 12.Nc6+– Qd7 13.Ne7 Qe7 14.0–0 d5 15.e5 Nd7 16.Qd3 h5 17.Qh7 0–0–0 18.Qd3+– f6? 19.Qa6 Kb8 20.Bd4 fe5 21.Ba7 Ka8 22.Bc5 Kb8+– 23.Be7 Rde8 24.Qe6 Kc8 25.Qd5 Nf6 26.Qe5 Kd7 27.Rd1 Kc8 28.Nc3 Kb7 29.Nd5 Nd5 30.Rd5 Kc6 31.Rc5 Kd7 32.Rd1 Kc8 33.Qc7# 1–0. tschulz – Fuffy, MySchachOpen, 2005.

5.a3 Bg4 6.Nf3 Be7 =.

5.b5 Nb4 6.Qe2 =+.

5.b5 Ne7 6.Nf3 c6 7.0–0= Bd7 8.a4 g6 9.Nc3+= Bg7 10.Ne2 Bg4 11.Ng3 Qd7 12.bc6 Nc6 13.Bb5 a6 14.Bc6 Qc6=+ 15.d3 0–0 16.c4 Rac8 17.h3= Bd7 18.Ba3 Rfd8 19.Bb2 Qb6 20.Ra2 Qb4 21.Nd2 Bh6 22.Bc1 Qb6 23.Ne2 Qc7= 24.Nc3 Be6 25.Rb2 Qe7 26.Nf3 Bc1 27.Qc1 Kg7 28.Qg5 Rc7 29.Nd5 Nd5= 30.cd5 Qg5 31.Ng5 Bd7 32.a5 h6 33.Nf3 Bb5 34.Rd1 Re8 35.d4= ed4 36.Nd4 Ba4 37.Re1 Kf6 38.Nf3 Rb8 39.e5 de5 40.Re5 Re7?? 41.Re7 Ke7+/– 42.Rd2 Kd6=+ 43.Rd4 Bb3–/+ 44.Nd2 Bd5–+ 45.Ne4?? Ke5 46.Rd1 Ke4 47.Re1 (47.Rb1 Rc8–+) ˝–˝. Liebold,Ch – Buschmann,Benedikt, GER–chT U13 Germany, 1997.

4.Bd3 Be7

5.Nc3 0–0 6.h3 d5 7.Qf3 d4–/+ 8.Nce2 Bb4 9.0–0–0 Qe7 10.Nd4? ed4 11.Bd4 Ba3 12.Bb2 Bb2 13.Kb2 Nc6 14.e5 Qe5 15.c3 Be6 16.Ne2 Qa5 17.Bc2 Qa2 18.Kc1 Qa1 19.Bb1–+ Ba2 20.Kc2 Bb1 21.Rb1 Qa4 22.Kc1 Rab8 23.d4 Rfe8 24.Kd2 Qa5 25.Rhc1 Qd5 26.Ng1 Qf3 27.Nf3 b6 28.Rb5 Ne4 29.Kc2 Nf2 30.Ne5 Ne5 31.de5 Ne4 32.Kb2 Nc5 33.Ka3 Rbd8 34.Rbb1 Re5 35.Rd1 Red5 36.Re1 Kf8 37.Re3 Rd3 38.Ree1 Rc3 39.Ka2 Rd2 40.Rb2 Rb2 41.Kb2 Rb3 42.Ka2 a5 43.Re5 a4 44.Rh5 Rg3 45.Rh7–+ Rg2 46.Ka3 Kg8 47.Rh5 Rg3 48.Kb4 a3 49.Rd5 Rd3 50.Rd3 Nd3 51.Ka3 f5 52.Kb3 f4 53.Kc3 b5 54.Kd3 b4 55.Kc4 f3 56.Kb4 f2 57.Kb5 f1Q 58.Kc6 Qh3 59.Kc7 g5 60.Kd8 g4 61.Ke7 g3 62.Kf6 g2 63.Kg6 Qh7 64.Kf6 g1Q 65.Ke5 Qf1 66.Kd5 Qd7 67.Ke5 Qe7 68.Kd5 Qd3 69.Kc6 Qed7 70.Kb6 Q3d6 71.Ka5 Qc5 72.Ka6 Qdb5# 0–1. MARYMARY – marnzell, ChessWorld.net, 2011.

5.c4 a5 6.b5 b6 7.Nc3 Bb7 8.a4 Nbd7 9.Bc2 Nc5 Can e4 get defended? 10.d3 0–0 11.Nge2 Qd7 12.Qd2 Qg4 13.0–0–0 (13.0–0!?=) 13...Nh5 14.Kb1 Bg5 15.Qe1 Nf4 (15...Qg2? 16.Rg1 Qh2 17.Rg5+–) 16.h3 Qe6 (worse is 16...Qg2 17.Rg1 Qf3 18.Rg5 Ncd3 19.Bd3 Nd3 20.Qg1 Be4 21.Rg7 Kh8 22.Rg3 Nf4 23.Ka2 Ne2 24.Rf3 Ng1 25.Re3 Nh3 26.Ne4+/– (worse is 26.Rh3 Bc2+=)) 17.h4 Bh6 18.g3 Nfd3 19.Bd3 Nd3 20.Rd3 Be4 (20...Qc4 21.Qd1 f5= (worse is 21...Be4 22.Ne4 Qe4 23.Nc3+/–)) 21.Ne4+/– Qc4 22.Qd1 Qe4 23.f4 Rfd8 (better is 23...ef4!? 24.Nc3 Qb7+=) 24.Nc3+– Qf5 25.g4 Qf4 26.g5 Bg5 27.hg5 Qg5 28.Nd5 Rd7 29.Bc1 Qf5 30.Ka1 e4 31.Rdh3 h6 (31...Rf8+–) 32.Rh5 Qf2 (32...Qe6 33.Bh6! f5 34.Bg7 Rg7 35.Rh8 Kf7 36.Ra8 Qe5 37.Kb1 e3 38.Qh5 Rg6+–) 33.Bh6! f5 (33...gh6 34.Qg1 Double attack (34.Qg1 Decoy)) 34.Be3 (34.Be3 Qg3 35.Nb6 Qe5 36.Bd4+–) 1–0. Dolejs,D (1890) – Mitchell,R (1670), Oceania Zonal, 2011.

5.Nf3 0–0 6.0–0 Re8 7.Nc3 Bg4 8.Be2 Bf3 9.Bf3 Nc6 10.a3 a6 11.Ne2+= b5 12.c3 Qd7 13.d4 Rad8 14.Rc1 g6 15.d5+/– Na7 16.c4 c5 17.bc5 Rc8 18.c6+– Qc7 19.cb5 Nb5 20.Rb1 Rb8 21.a4 Na7 22.Nc3 Qb6 23.Re1 Nh5? 24.Bh5 gh5 25.Qh5 f6 26.Qg4 Kh8 27.Qd7 Rbd8 28.Ba1 Qb1 29.Rb1 Rd7 30.cd7 Rd8 31.Rb7 Nc8 32.dc8Q Rc8 33.Re7 a5 34.Ra7 Rc5 35.Rf7 Rc4 36.Rf6 (36.Rf6 Kg8 37.Rd6+–) 1–0. color1972 – The Enchanter, ChessWorld.net, 2005.

4.d4 Nc6

5.Bb5 Bd7 6.de5 de5 7.Bc6 Bc6–/+ 8.Qd8 Rd8 9.Be5 Be4 10.Nf3 Bb4 11.c3 Ba5 12.Nd4? Rd5 13.Bf6 gf6 14.0–0 Rg8 15.f3 Bg6 16.Re1 Kf8 17.Nb3 Bb6–+ 18.Kh1 c6 19.Na3 Bc7 20.Re3 Bf4 21.Re2 Re5 22.Nd4 Re2 23.Ne2–/+ Bd6 24.Nc4 Bc7 25.Nd4 Kg7 26.Re1=+ b5 27.Ne3 f5 28.Nc6 Bb6 29.Nd5 Bc5= 30.Nde7 Be7 31.Ne7 Rd8 32.Nc6 Ra8 33.Re7 a5 34.Ra7 Rc8= 35.Na5 Rc3 36.h4 Ra3 37.Nc6 Ra7 38.Na7+/– b4 39.Nc6 f6 40.Nb4+– Bf7 41.a4 Bc4 42.a5 Kg6 43.a6 Ba6 44.Na6 f4 45.Nc5 Kh5 46.Ne6 Kh4 47.Nf4 Kg3 48.Nh5 (48.Nh5 Kh4 49.Nf6+–) 1–0. juancabeta – hris, internet, 2005.

5.Bb5 Ne4 6.Nf3 Bd7 7.0–0 =+.

5.d5 Nb4 6.c3 Na6 =+.

5.de5 Ne5 6.Nd2 Be7 7.h3 0–0 8.Ngf3 Bd7 9.Be2 Nc6 10.b5= Na5 11.0–0 c6 12.bc6 Nc6= 13.Re1 Qc7 14.c4 Rac8 15.Bd3 Rfe8 16.e5 Nh5 17.Nd4 Nf4=+ 18.N2f3? de5?? 19.Nc6= Qc6 20.Be5 Nd3=+ 21.Qd3 f6 22.Bc3 b5 23.cb5 Qb5 24.Qb5 ˝–˝. gtate (1930) – rumpunch, net–chess.com, 2005.

5.de5 Ne5 6.Nd2 Be7 7.h3 Be6 8.Ngf3 Nf3 9.Nf3 Ne4 10.Bg7= Rg8 11.Qd4 Bf6 12.Bf6 Qf6 13.Qf6 Nf6 14.Ng5?? Rg5–+ 15.0–0–0 Ne4 16.Rd2 Nd2 (16...Nd2 17.Kd2 Ba2–+) 0–1. gtate (1900) – jamesjj (2140), net–chess.com, 2006.

4.d4 ed4

5.Qd4 Nc6 6.Bb5 Bd7 7.Bc6 Bc6 8.Nc3 a6 9.Nf3 Be7 10.e5 de5–/+ 11.Qe5 Qd6 12.Qd6 Bd6 13.a3 Bf3 14.gf3 Be5 15.0–0–0 0–0 16.Na4 Bb2=+ 17.Nb2 b5 18.Rd3 a5 19.Re1 ab4 20.ab4 Ra1 21.Kd2 Re1 22.Ke1 Re8 23.Kf1 g5 24.Rc3 Nd5 25.Rc5 Re5 26.Nd3= Rf5 27.Kg2 Nf4–/+ 28.Nf4 ˝–˝. Koch – Eichhorn, corr, 1988.

5.Qd4 Nc6 6.Qc4 Qe7 7.Bf6 Qf6 8.Nc3 Be6–+ 9.Qd3 d5! 10.Rb1 Bb4 11.Nge2 de4 12.Qe4 Bc3 13.Nc3 Qc3 14.Kd1 0–0–0 (14...0–0–0 15.Bd3 Ba2–+) 0–1. Damasio,Fabio – Parry,Andrew, TE.2004.P.01708, 2004.

5.Qd4 Qe7 6.Bb5 Bd7 7.Bd7 Nbd7 8.Nd2 =+.

4.d4 Ne4

5.Bd3 d5 6.Nf3 –/+.

5.Bd3 Nf6 6.de5 de5 7.Be5 Be7 8.Qe2 Ne4?? 9.Qe4+– Nc6 10.Bg7 Nd4 11.Bh8 c5 12.bc5 (12.bc5 Nc6 13.Qh7 Bc5 14.Qg8 Bf8 15.Bg7 Qe7 16.Ne2+–) 1–0. segovia (1840) – jbumgar (1675), net–chess.com, 2009.

5.de5 d5 6.a3 =+.

5.de5 d5 6.Nc3 Bb4 7.Nge2? Nc6 8.a3 Ba5 9.Qd3 Bf5 10.Qf3 Qg5 11.Bc1 Bc3 12.Nc3 Ne5 13.Qe3? Qe3 14.Be3 Nc3 15.Bd4 Ne4 16.Be5 0–0 17.Bd3 Rfe8 18.Bb2 Ng3 19.Kd2 Nh1 20.Bf5 Nf2 21.Rf1 Ne4 22.Be4 Re4 23.Kd3 Rae8 24.Rf3 c5 25.Rg3 g6 26.Bc1 b5 27.Re3 c4 28.Ke2 Re3 29.Be3 d4 0–1. gtate (2075) – nerob (2000), net–chess.com, 2004.

5.de5 d5 6.Nd2? Bb4–+ 7.Bd3?? Bd2 8.Ke2 Qh4 (8...Qh4 9.Be4 Qe4 10.Kd2 Qg2–+) 0–1. gtate (1930) – adams (1920), net–chess.com, 2005.

5.de5 de5 6.Qd8 Kd8 =+.

4.Qe2 Nc6

5.b5 Nd4 6.Bd4 ed4 7.Nf3 =+.

5.Bc3 =+.

4.Qe2 Be7

5.Nf3 0–0 6.a3 Nbd7 7.Nc3 c5 8.Qd3 cb4 9.ab4 Nb6 10.Be2 Be6 11.Qb5 a6=+ 12.Qa5 Nc4 13.Bc4 Bc4 14.d3 b6 ˝–˝. Confente – Unger, corr 3GMM–15, 1995.

5.Nf3 0–0 6.a3 a5 7.b5 =+.

5.Nf3 0–0 6.Nc3 Bd7 =+.

5.Nf3 0–0 6.c4 Na6 7.a3 c5 8.b5 Nc7 9.g3 a6 10.a4 ab5 11.ab5 Bg4 12.Bg2 Ra1–/+ 13.Ba1 Qa8 14.Bc3 Qa2 15.0–0 Be6 16.Rc1 Bc4 17.Qe1 Nb5 18.Be5? de5 19.Ne5 Be6 20.Bf1 Nd4 21.Nc3 Qa5 22.Kg2 Qc7 23.f4 b6 24.Qe3 Rd8 25.h3 Qb7 26.Kh2 b5 27.f5 Bb3 28.Nb5 Qe4 29.Nd4 Rd4 30.Bg2 Qe3 31.de3 Rd2 32.Nc6 Rg2! (32...Rg2 33.Kg2 Bd5 34.Kf1 Bc6–+) 0–1. Grawunder,Juergen (2115) – Frie,Michael (1875), Verbandsklasse A Muensterland, 2006.

5.Nf3 0–0 6.g3 d5 7.a3 de4 8.Ne5 a5 9.Bg2 ab4 10.ab4 Ra1 11.Ba1 Bb4 12.Be4 Ne4 13.Qe4 Qe7 14.Qe3 Bf5–/+ 15.Kd1 Qe6 16.Nc3 Nc6 17.Nd3 Qc4 18.Nb4=+ Qb4 19.d3 Rd8 20.Re1=+ h6 21.Kd2 Nd4 22.Rb1 Qa5 23.Qe7 Ne6 24.Qb4 Qa7 25.Nd1 b6 26.Ne3 Bg6 27.Bc3 Qa8=+ 28.Ke2 Ng5 29.Qg4 f6 30.Qc4 Kh7 31.Re1? Qf3–+ 32.Kf1 Nh3 33.Nd1? Rd3!! (33...Rd3 34.cd3 Bd3 35.Qd3 Qd3 36.Kg2 Ng5–+) 0–1. Trevelyan,C – Cooper,John Grantley (2375), WLS–ch Cardiff, 1994.

4.f3 Nc6

5.b5= Nd4 6.Bd4 ed4=+ 7.Ne2 d3 8.cd3= Be7 9.d4 0–0 10.d5 Nd7 11.Nd4 Bf6=+ 12.Qa4 Nc5 13.Qc4 a6 14.Nc3 ab5–+ 15.Ndb5 Bd7 16.Be2 c6 17.Nd6+/– b6 18.0–0 Bc8? 19.Qb4?? Qd6–+ 20.Qb6 Bd7 21.Qb1 Rfe8 22.Bc4 Reb8 23.Qd1 Na4! 24.Rc1?? Qc5 25.Kh1 Qc4 26.Ne2 Qa6 27.Nf4 Be5 28.Nh5 Rb2 29.f4 Bd4 30.d6 Qd3 31.e5 Rd2 32.Qe1 Qe2 33.Qg3 Qh5 34.Rce1 Nc5 35.Rf3 Raa2 36.Ra3 Ra3 37.Qa3 h6 38.Qc1 Ne4! 39.h3 Bh3! (39...Bh3 40.Re3 Bg2 41.Kg1 Be3) 0–1. PawnPower – ismaelarango (1645), internet, 2006.

5.b5 Ne7 6.Nc3 Ng6 7.Bd3 Be7 8.Nd5? Nd5–+ 9.ed5 0–0 10.Bg6 fg6 11.Nh3? Bh3–+ 12.gh3 Bh4 13.Ke2 Qd7 14.d4? Qb5 15.c4 Qb2 16.Ke3 Qf2 17.Kd3–+ Rf3 18.Qf3 Qf3 19.Kc2 ed4 20.Rad1 d3! 21.Kc3 Bf6 22.Kb3 d2 23.Kc2 Qc3 24.Kb1 Qb2# (24...Qd3#) 0–1. pauldopson – mwojo (1745), net–chess.com, 2003.

4.f3 Bd7

5.a3 g6 6.Bc3 Bg7 7.Bc4 0–0 8.Ne2 b5 9.Bb3 a6 10.d4 Nc6 11.d5 Nd4 12.Bd4 ed4= 13.Nd4? Nh5?? 14.Qd2 Be5 15.Nc3 Qh4 16.Ke2 Qf6 17.Nc6?? Bc6–+ 18.Qe3 Bc3 19.Rad1 Nf4 20.Kf2 Bd7 21.h4 Be5 22.Kf1 Nh5 23.Kf2 Bg3 24.Ke2 Nf4 25.Kd2 Ng2 26.Qe2 Bf4 27.Kd3 Ne3 28.Rdg1 Rfe8 29.h5 Re7 30.Qf2 Nf5! 31.c3 Rae8 32.Bc2 Be3 33.Qg2 Bg1 34.Qg1 c6 35.Kd2 cd5 36.ef5 Re2 37.Kd3 Bf5 0–1. boldeagle – The Enchanter, ChessWorld.net, 2005.

5.Bc4 Be7 6.Ne2 0–0 7.0–0 b5 8.Bb3 c5 9.bc5= dc5 10.a4 c4–/+ 11.Ba2 Qb6 12.Kh1 Nc6 13.Nbc3 a6 14.d3 Nb4 15.Ba3 Na2 16.Be7= Rfe8 17.Bf6 Qf6?? 18.Ra2 b4 19.Nd5 Qd6 20.f4 c3 21.fe5 Re5 22.Nef4 a5 23.Qf3 Rf8 24.Qg3 Be6 25.Nh5! g6 26.Nhf6 Kh8 27.Qf4 Bd5 28.Qh6 Rh5 29.Nh5 gh5 30.Qd6 (30.Qd6 Kg7 31.Qd5+–) 1–0. pumpkin (2190) – mrazo (2040), net–chess.com, 2005.

4.f3 Nbd7

5.Bc4 Be7 6.b5 0–0 7.d4 ed4 8.Qd4 Ne5 9.g4 Nfd7 10.f4? (10.Bd5 Bh4 11.Kd1 Bf6–+) 10...Bh4 (10...Bf6 11.fe5 Be5 12.Bf7 Rf7 13.Qb4–+) 11.Ke2 Qf6?? (better is 11...Bf6 12.Nc3 Nc4 13.Qc4 Nb6–+) 12.fe5+= Ne5 13.Bd3?? (better is 13.h3 Nc4 14.Qf6 gf6 15.Bd4=) 13...Bg4–+ 14.Kd2 Bf2 15.Qd5 (15.Qa4 Bg1 16.Be5 Qg5 17.Kc3 Qe5 18.Kb3–+) 15...c6 16.bc6 bc6 17.Qb3 (17.Qe5 Qh6 18.Kc3 de5 19.Kb4 Rab8 20.Ka4 Rb2 21.Bc4–+) 17...Qf4 18.Kc3 Be1 (18...Be1 19.Nd2 Bd2 20.Kd4 Qe3) 0–1. Jokmin,Alex – Nolf,Francky, RN–2010–0–00308, 2010.

5.d4 Nh5 6.d5?? Qh4–+ 7.Ke2 Ng3! 8.hg3 Qh1 9.Kf2 Qh5 10.g4 Qh4 11.Ke2 b6 12.Nd2 Ba6 13.c4 Be7 14.b5 Bb7 15.Kd3 Nc5 16.Kc2 0–0 17.Ne2 a6 18.g3 Qf6 19.f4 ef4?? 20.Bf6+– Bf6 21.Rb1 ab5+= 22.cb5?? Ra2 23.Kc1 Nd3 0–1. bashful – voyeur, Live Game Caissa's Web, 2004.

4.f3 Be6

5.Na3 Nc6 6.c3 a6–/+ 7.Bc4 Bc4 8.Nc4 b5 9.Ne3=+ g6 10.a3 Bh6 11.Qe2 0–0 12.c4 bc4 13.Nc4 Nh5 14.Nh3 Qh4 15.Qf2+= Qf2 16.Nf2 f5 17.ef5 Rf5 18.g4 Rf4+= 19.gh5 Rc4= 20.hg6 hg6 21.Ne4 Nd4 22.Bd4 Rd4 23.0–0–0 Rd3 24.Rhg1 Kf7 25.Rdf1 Ra3 26.Kc2 a5 27.b5 Rb8 28.Ng5 Bg5–+ 29.Rg5 Rb5 30.f4 Ra2 31.Kc3 Rc5 32.Kb3 Rd2 33.fe5 Kg7 34.Rf6–/+ Re5 35.Rgg6= Kh7 36.Rh6 Kg7 37.Rhg6 Kh8 38.Rh6 Kg8 ˝–˝. PawnPower – Rob (1630), internet, 2007.

5.Na3 Ne4 6.fe4 Qh4 7.Ke2 Qe4 8.Kf2 Qf4 9.Nf3 –/+.

5.b5 a6 6.d4 =+.

5.b5 d5 6.ed5 Nd5 7.Be5= Nd7 8.Bb2 Qh4 9.g3= Qb4 10.Qc1 0–0–0 11.c4 N5f6 12.Ba3 Qa4 13.Bf8 Rhf8 14.Qc3 Rfe8 15.Kf2 Nc5 16.Kg2 Bf5 17.d4 Bb1 18.Rb1= Qa2 19.Rb2 Na4 20.Ra2 Nc3 21.Ra3 Nd1 22.d5= Re3 23.Ra7 Rc3= 24.Ra8 Kd7=+ 25.Rd8 Kd8 26.Nh3 Rc2 27.Kg1=+ h6 28.Bd3 Rd2 29.Bf1 Nd7 30.f4 Ra2 31.g4–+ Ne3 32.g5 Ke7 (32...Ke7 33.gh6 gh6–+; 32...Nb6 33.gh6 gh6 34.f5 Nbc4 35.Nf4 Nf1 36.Kf1 Ne3 37.Kg1 Ra1 38.Kf2 Rh1 39.Ke3 Rh2 40.b6–+) 0–1. Stadler,Pavel – Sherwood,Russell, SI–2006–0–00048, 2006.

5.Bd3 Nbd7 6.Ne2 Be7 (6...d5 7.ed5 Nd5 8.a3–/+) 7.0–0 0–0 8.f4= ef4 9.Nf4 Bg4 10.Qe1 Ne5 11.Qg3 Nd3 12.cd3 Be6 13.Ne6 fe6 14.Qh3 e5 15.Nc3 Qd7?? 16.Qg3?? a6 17.Nd5 Nd5–/+ 18.ed5 Qb5 19.Bc3 Qd5–+ 20.Qe3 Rf1 21.Rf1 Rf8 22.a4 Rf1–+ 23.Kf1 Qc6 24.a5 Qe8 25.Qe4 ˝–˝. abhijit – aaliyah, net–chess.com, 2002.

5.d4 ed4 6.Bd4 Be7 7.c4 0–0 8.Bd3 Nc6–/+ 9.Bc3 a6 10.Ne2 b5 11.cb5+= ab5 12.Bb5 Bd7 13.a4+/– Nb4? 14.Bd7+– Qd7 15.Bb4 c5 16.Bc3 Rfb8 17.0–0 1–0. Wall,Bill – Delite, internet, 2002.

5.Ne2 d5 6.Be5 Nc6 7.Bf6 Qf6 =+.

4.f3 Be7

5.b5 Nbd7 =+.

5.c4 0–0 6.d4 ed4 7.Bd4 Be6 8.b5=+ c6 9.a4 cb5 10.ab5= Ne4?? 11.fe4+– Bh4 12.g3 Bg5 13.Bd3 Nd7 14.Nd2 Ne5 15.Be5 de5 16.Qc2 Qd4 17.Nb3+– Qe3 18.Qe2 Rfd8 19.Qe3+– Be3 20.Ke2 Bh6 21.h3 Rac8 22.Na5 Rc7 23.Nf3 Rcd7 24.Rad1 g6 25.g4 Bf4 26.Bc2 b6 27.Nc6 Bc4 28.Kf2 Bb5?? 29.Nd8 Rc7 30.Bb3 Kg7 31.Rd5 Ba6 32.Ne5 Rc3 33.Rb1 Bg3 34.Kg2 Bh4 35.Ndf7 Bb7 36.Rd4 Rg3 37.Kh2 Re3 38.Rd7 Re2 39.Kg1 Be4 40.Ng5 Kf6 41.Rf1 Ke5 42.Nf7# 1–0. gamebit (2125) – mic (2105), net–chess.com, 2007.

5.Bc4 0–0 6.Ne2 d5 7.ed5 Nd5 8.a3 Nc6 9.0–0 Nb6 10.Bb3 Nd4 11.Nd4 ed4 12.Re1 Bf5 13.c4 dc3 14.Nc3 Qd4 15.Kh1 Bd6 16.Na4 Qf4 17.g3 Qh6 18.Be5 a5 19.Nc5 ab4 20.ab4 Be5 21.Ra8 Ra8 22.Re5 Qf6 23.Qe1 Nd7 24.Re8= Re8 25.Qe8 Nf8 26.Kg2 (< 26.Nb7 Be6 27.Be6 Qf3 28.Kg1 Qd1 29.Kg2 Qd2 30.Kh3 Qh6 31.Kg4 Qe6 32.Qe6 Ne6=+ (< 32...fe6 33.Nd8+=)) ˝–˝. Bravo,Ricardo – Cordova Valle,Sergio (2320), Santiago ARAIS tt–B, 1992.

5.Bc4 0–0 6.Ne2 Kh8 7.0–0 Be6 8.Be6 fe6 9.d4 ed4 10.Nd4 Qd7 11.Nd2 Nc6 12.Nc6 bc6 13.f4 e5 14.fe5 de5 15.Be5 Bb4 16.Nf3 Qd1 17.Rad1 Ne4 18.Bc7?? Bc5–+ 19.Kh1 Nf2 20.Rf2 Bf2 21.Rd7 h6 22.Be5 Rg8 23.Nh4?? Bh4–+ (24.g3 Rae8–+) 0–1. bashful – DontBother, Live Game Caissa's Web, 2004.

5.d4 0–0 6.d5 Na6 7.Ba6 ba6 8.Ne2 Bb7 9.c4 c6 10.a4 cd5 11.cd5 a5 12.b5 a6 13.Nbc3 ab5 14.Nb5 Ba6 15.0–0 Bb5 16.ab5 Qb6 17.Kh1 Qb5 18.Rb1 Rfb8 19.Be5?? Qb1–+ 20.Qb1 Rb1 21.Rb1 de5 22.Ng3 Bb4 23.Rc1 (23.Nf5 Kf8–+) 0–1. wach – stress, Caissa.com, 2004.

5.d4 0–0 6.de5 de5 7.Qd8= Bd8 8.a3 Nfd7 9.c4 f6 10.Ne2 Nb6 11.Ng3 Na4 12.Bc1 Nc6 13.Be3 Nd4 14.Bd4 ed4 15.Bd3 Nb2 16.Ke2 Nd3 17.Kd3 f5 18.Kd4?? fe4?? 19.fe4?? Bf6–/+ 20.e5 Bg5?? 21.Rf1 Be6 22.Nc3 Rad8 23.Kc5?? Be3 24.Kb5 a6 25.Ka4?? Bc4 26.Rf8–/+ Rf8 27.Re1? b5 28.Ka5 Bb6 29.Ka6=+ Ra8 30.Kb7 Ra3 31.e6 Rc3–/+ 32.e7 Bd5 33.Kc8 (33…Bf7 34.e8Q Be8 35.Re8 Kf7 36.Re5–/+; better is 33.Ka6!? Bf7 34.e8Q Be8 35.Re8 Kf7 36.Re2=). slavisa3 – takeiteasy, Live Game Caissa's Web, 2004.

5.d4 ed4 6.Qd4 0–0 7.Bb5 =+.

4.Qf3 Nc6

5.a3 a5 6.b5 Nd4 7.Bd4 ed4 8.Bc4 Bg4 9.Qb3 d5 10.Bd5 Nd5 11.Qd5 Qd5 (12.ed5 0–0–0=+). me doggie – Johnny Awesome, ChessWorld.net, 2003.

5.b5 Nd4 6.Bd4 ed4 7.Ne2 Bg4 8.Qb3 b6?? 9.Nd4+/– Qe7 10.f3 Bh5? 11.g4 Bg6 12.Nc6 Qd7 13.c4 Be7 14.Nc3 a6 15.Be2 ab5 16.Qb5 0–0 17.Ne7 Qe7+= 18.Nd5 Nd5= 19.Qd5 h6 20.d4 c5 21.0–0–0?? Ra2–+ 22.Rhe1 Rfa8 23.dc5 ˝–˝. jacksrking – segovia (1840), net–chess.com, 2009.

5.Bb5 Be7 6.Ne2 =.

5.Bb5 Bg4 6.Qg3 h5 7.Qc3 Qd7 8.h3 Ne4–/+ 9.Qe3 Bf5 10.d3 Nf6 11.Nf3 Nd5–+ 12.Bc6 Qc6 13.Qg5 Nb4 14.Na3? g6 15.Qf6? Nc2 16.Nc2 Qc2 17.Qh8 Bd3 18.Nd2 (18.Nd2 Qb2 19.Rd1–+). ChessNo1 – Stoot, ChessWorld.net, 2005.

4.Qf3 Be7

5.d4 0–0 6.Nd2 Bd7 7.de5 de5 8.Be5 Nc6–+ 9.a3?? Ne5 10.Qc3 Ng6 11.Ngf3 a6 12.Bd3 Bc6 13.0–0 Nf4 14.e5 N6d5 15.Qd4 Bd7 16.c4 Qc8?? 17.cd5+/– Nd3 18.Qd3 Bb5 19.Nc4 Rd8 20.Ng5?? Qf5?? 21.Qf5+– Bc4 22.Qh7 (22.Qh7 Kf8 23.Qh8#) 1–0. jboger (1985) – jbumgar (1675), net–chess.com, 2009.

5.d4 ed4 6.Bd4 Nc6 7.Bf6 Bf6–+ 8.c3 Nb4! 9.Qd1 d5 10.Qf3?? Qe7 11.Qe2 de4 12.a3 Nd3 13.Kd1 0–0 14.g3 Rd8 15.Nd2 Bc3 16.Ra2 Nb2 17.Kc1 Rd2 18.Qc4 Nc4 (18...Nc4 19.Nf3 Ra2 20.Kd1 Qd6 21.Nd4 Qd4 22.Bd3 Qd3 23.Kc1 Qc2#) 0–1. Wloka,Frank – Kirmse,Horst (1730), RSL2, 2004.

4.Nf3 Ne4

5.Nc3 Bf5 6.Be2 Nc6 7.a3 g6 8.0–0 Bg7 9.d3 Nc3–/+ 10.Bc3 0–0 11.h3 d5 12.b5 Ne7 13.Be5= Be5 14.Ne5 Qd6 15.Nf3 Rae8 16.Re1 Qf6 17.Qd2 Nc8 18.a4 Re7 19.c3 Rfe8 20.Nd4 Nd6 21.Rab1 1–0. sobedesce – pjackson, net–chess.com, 2004.

5.Bd3 Nf6 6.0–0 (6.0–0 Be7 7.Re1–/+). joeuno – ludger, net–chess.com, 2005.

5.Be2 Be7 6.0–0 0–0 7.c4 Nd7 8.d3 Ng5 9.Ng5 Bg5 10.Nc3 a6 11.Ne4 Bf4 12.g3 Bh6 13.d4 ed4 14.Bd4 Ne5 15.Qb3 Be6 16.Qb2 (16.Be5 de5 17.Nc5 Bc8–/+) 16...f6 17.c5 Bh3 18.Rfd1 Qe7 19.cd6 cd6 20.Be5 de5 21.Qb3 Kh8 22.Bf3 Rad8 23.Nc5 Rd1 24.Rd1 Bf5 25.Bb7 (25.Nb7? e4 26.Be4 Be4–+ (worse is 26...Qe4 27.Nd6 Qe6 28.Nf7 Kg8 29.Qe6 Be6 30.Nh6 gh6 31.Rd6–+)) 25...Bg6 (better is 25...a5!?+=) 26.Ba6+/– e4 27.Rd7 Qe5 28.a4 e3 29.Kf1 ef2 30.Kf2 Be8 31.Rd2?? Bd2–+ 32.a5 Qe1 33.Kf3 Bh5 34.g4 Qh1 35.Kg3 Qg1 (35...Qg1 36.Kf3 Bg4 37.Ke4 Qg2 38.Kd3 Rd8 39.Kc2 Bb4 40.Kb1 Rd2 41.Qc2 Rc2 42.Bb7 Rb2 43.Ka1 Ra2 44.Kb1 Qc2) 0–1. Neumann,Frank – Jaszczowski,Zdzislaw, 45. LSS No Engine Cup Preliminary, 2011.

4.f4 ef4

5.Bc4 Ne4–+ 6.Nf3 Bg4 7.0–0? Be7 8.Bg7 Rg8–/+ 9.Bb2 Bf6 10.Nc3=+ Nc3 11.dc3 Bf3 12.Qf3+/– Be5. abhijit (1780) – mpopp (1825), net–chess.com, 2002.

5.Nf3 Bg4 6.Nc3 Be7 7.Bc4 Nbd7 8.d4 Nb6–/+ 9.Bb3 0–0 10.0–0 h6 11.a4 a5 12.b5 Nh7 13.Ne2 Nd7 14.Nf4+/– Ng5 15.h3 Nf3? 16.gf3+– g5 17.hg4 gf4 18.Kg2 Bh4 19.c4 Qf6 20.Qe2 Rae8 21.Rh1+– Bg5 22.c5! dc5 23.dc5 Ne5 24.Rad1 Qe7 25.Rd5 f6 26.Rd7 Kg7 27.Re7 Re7 28.Rd1 b6 29.cb6 cb6 30.Rd6 Rb8 31.Bd4 Nd7 32.Qc2 Rb7 33.Qc6 Nf8 34.Bf6 Bf6+– 35.Rf6 Rbc7 36.Qb6 Ra7 37.Rh6 (37.Rh6 Rf7 38.g5+–) 1–0. dixi82 – yulio, ChessWorld.net, 2006.

3.e4 g6

4.Nc3 b6 5.Bc4 Ba6 6.Ba6 Na6 7.Nf3 Nb4= 8.0–0 Bg7 9.Nb5 Qd7 10.a4 Nf6 11.d3 0–0–0?? (Better is 11...Nc6–/+) 12.Be5?? (Better is 12.Na7 Kb7 13.Nb5+/–) 12...de5–+ 13.Ne5 Qe7 14.d4 Ne4 15.f3 Be5 16.Na7 Kb7 0–1. b4_player (1980) – nn, GameColony.com, 2002.

4.Nc3 Nc6 5.a3 =.

4.Bc4 Nf6 5.Nc3 a6 6.Nf3 b5 7.Bb3 Nc6 8.Ng5 Be6 9.Be6 fe6 10.Ne6 Qd7 11.Nf8 Rf8 12.a4 Nb4 13.ab5 a5 14.0–0+/– d5 15.Ba3+– c5 16.bc6 Qc6 17.ed5 Qb7 18.Qe2 0–0–0? 19.Bb4 ab4 20.Qc4 Kd7 21.Ra7! Qa7 22.Qc6 1–0. Wall,Bill – Chinen, Internet, 2002.

4.d4 Nc6 5.Bb5 Bd7 6.de5 de5 7.a3 Bg7 8.Nf3 Nge7 9.h3 0–0 10.0–0 Nd4 11.Nd4 ed4 12.Bd7 Qd7 13.Nd2 b6 14.Nb3 c5 15.bc5 bc5 16.Nc5 Qd6 17.Nd3 Rab8 18.Bc1 Nc6 19.Bf4 Ne5 20.Rb1 Rb1 21.Qb1 Rb8 22.Qa2 g5 23.Bg5 Nd3 24.cd3 Rc8 25.Rb1 Rc3 26.Rb7 Qg6 27.Rb8 Bf8 28.Be7 Rc1 29.Kh2 Qh6 30.Rf8 Kg7 31.Qf7 1–0. mtrc – McCica05, internet, 2002.

4.d4= ed4 5.Bd4 Nf6 6.Nc3 Bg7 7.Nf3 Nc6 8.Bb5 Bd7 9.a3 (9.Bc6!? Bc6 10.0–0+=) 9...0–0+= 10.0–0 (10.Bc6!? Bc6 11.Nd2+=) 10...Nd4–/+ 11.Bd7?? (better is 11.Nd4 c5 12.bc5 dc5 13.e5 cd4 14.ef6 Bf6 15.Bd7 Qd7 16.Qd3–/+) 11...Nf3–+ (11...Qd7?! 12.Nd4 (worse is 12.Qd4 Ne4 13.Qe4 Bc3–/+) 12...Rfe8 13.Re1=; 11...Nd7?! 12.Nd4 Qf6 13.Nde2=) 12.Qf3 Nd7 13.Rad1 Qf6 (13...Ne5 14.Qe2–+) 14.Qf6 (14.Nd5 Qf3 15.gf3 c6–+) 14...Bf6 15.Nd5 c6 16.Nf6 Nf6 17.Rd6 Ne4 18.Rd7 b6 19.Re1 Rfe8 20.Rc7 c5 21.f3 Nc3 22.Re8 Re8 23.bc5 Nb5 24.Rc6 (24.Rb7 Re1 25.Kf2 Rc1–+) 24...bc5 25.Rc5 Na3 26.c3 Re1 27.Kf2 Rc1 28.Ra5 Rc3 29.Ra7 Nc4 30.Rc7 Rc2 31.Kg3 Ne3 32.Re7 Nf5 (32...Nf5 33.Kh3 Ne7–+) 0–1. Feio,Rui – Ferreira,Tiago Filipe Quiter, Benedita FIDE op 3rd, 2006.

4.d4 Qe7 5.Nc3 c6 6.Nf3 Bg7 7.de5 de5 8.a3 Bg4 9.h3 Bf3 10.Qf3 Nf6 11.Rd1 Nbd7 12.Bc4 0–0 13.0–0 Nh5 14.g3 Qg5 15.Rd7 Nf4 16.h4 Nh3 17.Kh2 Qd2 18.Bf7 Kh8 19.Rd2 Nf2 1–0. marekt – NN, GameColony.com, 2002.

4.Bc4 Bg7

5.Qf3 Be6 6.Be6 fe6 7.Nc3 Nc6 8.Nge2 Nf6 9.0–0 0–0 10.Nb5 a6 11.Na3=+ Nd5 12.Qb3 Nf4 13.Nf4+= ef4 14.Bg7 Kg7= 15.Qe6 Re8 16.Qh3 Re4= 17.d3 Re2 18.Qf3= Qe7 19.Nc4 Re8 20.h3 Rc2–/+ 21.Qf4 Rf8 22.Qg3 Nd4 23.Ne3?? Ne2–+ 24.Kh1 Ng3 25.Kg1 Nf1 26.Kf1 Rcf2 27.Kg1 Qe3 (27...Qe3 28.Kh1 Rf1 29.Rf1 Rf1 30.Kh2 Qf4 31.g3 Qd2#) 0–1. Nautiluschess – Magua, ICS blitz, 2001.

5.Nf3 (--> 4.Nf3 Bg7 5.Bc4).

4.d4 Nd7

5.de5 de5 6.Nf3 Bg7 (6...Bb4!? 7.Nbd2 Qe7=+). Aliethah – uncletom, Live Game Caissa's Web, 2004.

5.de5 Ne5 6.Be5 de5= 7.Qd8 Kd8 8.a3 Be6 9.Nf3 Bg7 10.Bd3 Ne7 11.Ng5+= Nc6 12.Ne6+/– fe6 13.0–0 Ke7+= 14.c3 Rad8= 15.Bb5 Nb8 16.c4 c6 17.Ba4 Nd7 18.Nc3 Nf6 19.Rad1 Rd4 20.Rd4 ed4–/+ 21.Ne2 Ne4–+ 22.Rd1 e5 23.f3 Nd6–+ 24.c5 Nc4 25.Rd3 Ne3 26.Bd1 g5 27.Ng3 Ke6 28.Ne4 Bf6 29.g4 h5 30.Nf6 Kf6 31.h3 hg4 32.hg4 Ke6 33.Re3 de3 34.Kf1 Rh2 35.Be2 Kd5 36.Ke1 Kd4 37.a4 Kc3 38.b5 Kd4 39.bc6 bc6 40.Kd1 Kc5 41.Bd3 Kb4 42.Bc2 c5 43.Bd3 c4 44.Be2 c3 45.Bd3 Ka4 (45...Ka4 46.Be4 e2 47.Ke1 Kb3–+; 45...Rd2 46.Ke1 Rd3 47.Ke2–+) 0–1. wood – ru45, Live Game Caissa's Web, 2005.

4.d4 Bg7

5.Bc4 Qe7 6.de5 Be5 7.Be5 Qe5 8.Nd2 Nf6 9.Ngf3 Bg4 10.Ne5 Bd1 11.Nf7 Bc2 12.Nh8 Nbd7 13.Rc1 Ke7 14.Ng6 hg6 15.Rc2 Ne5 16.Be2 c6 17.f4 Ned7 18.0–0 Rh8 19.Rd1 Ke6 20.a4 1–0. pozarski (2030) – viking3, GameColony.com, 2002.

5.Nf3 Ne7 6.de5 de5? (Better is 6...Nbc6!?=) 7.Qd8+– Kd8 8.Bc4 (8.Be5 f6 9.Bc3 Re8+/–) 8...Be6 (Better is 8...f6!?+=) 9.Be6+/– fe6 10.Ne5 (Better is 10.Ng5 Kd7 11.Na3+/–) 10...Na6? 11.Nf7 Ke8 12.Bg7 Kf7 13.Bh8 Rh8 14.a3 Kg7 15.c4 Rd8 16.Nc3 c5 17.b5 Nc7 18.0–0 Rf8 19.a4 e5 20.a5 Ne6 21.Ne2 Nd4 22.b6?? Ne2–/+ 23.Kh1 ab6 24.ab6 Nc6 25.Rfe1? Nc3?? 26.Ra3 Rf2 27.Rc3+/– Nd4 28.Kg1 Rb2+= 29.Kf1 Rb6 30.Ra1 Rf6 31.Ke1 b6 32.Ra7+/– Kh6 33.Rb7 Kg5 34.Rg3 Kf4+= 35.Rh7 Nc2?? 36.Kd2+– Na3 37.Rh4 1–0. kamera (1645) – ZlatanP, GameColony.com, 2002.

5.Nf3 Bg4 6.de5 Nd7 7.Bb5 =.

4.Nf3 Bg7

5.Nc3 Nc6 6.Bb5 Bd7 7.a3 Nge7 8.0–0 0–0 9.Bc4 Bg4 10.h3 Be6 11.Nd5 f5 12.Ng5 Bd5 13.ed5 Rf6 14.dc6 1–0. b4_player (2110) – abecednik (1860), GameColony.com, 2002.

5.Nc3 Ne7 6.Bc4 Bf6 7.0–0 0–0 8.Qe2 c6 9.Bb3 d5 10.ed5 cd5 11.Ne5 d4 12.Nd1 Nbc6 13.Nd3 a5 14.b5 Nb4 15.Nb4 ab4 16.Re1 b6 17.Qf3 Bf5 18.g4 Bg4 19.Qg4 Nf5 20.Qf3 Bg7 21.Kh1 Ra7 22.Bd5 Nh4 23.Qb3 Rd7 24.Bc6 Rd6 25.Re4 Nf5 26.Qb4 Rc6 27.bc6 Qd5 28.f3 Ng3 29.hg3 Qh5 30.Kg2 Rc8 31.Qb6 Qd5 32.Bd4 Bd4 33.Rd4 Qc6 34.Rd8 Qe8 35.Re8 Re8 36.Nc3 Rf8 37.a4 h5 38.a5 g5 39.a6 h4 40.a7 g4 41.a8Q h3 42.Kh2 gf3 43.Qf8 Kf8 44.Qh6 Ke7 45.Ra7 Ke8 46.Qh8 1–0. kamret (2160) – susie_l, GameColony.com, 2003.

5.Nc3 Nf6 6.Bb5 c6 7.Be2 0–0 8.0–0 b5 9.a4+= ba4 10.Ra4 Bb7 11.Re1 a5 12.ba5 Ra5 13.Ra5 Qa5 14.d4 ed4= 15.Nd4 c5 16.Nb3 Qc7 17.Nb5 Qd7? 18.Nd6+– Ne4 19.Bg7 Kg7 20.Nb7 Qb7 21.Bf3 f5 22.Nc5! Qf7 23.Ne4 fe4 24.Qd4 Kg8 25.Be4 Nd7 26.Bd5 (26.Bd5 Nf6 27.Bf7 Kf7 28.Qc4 Kg7 29.Re7 Kh8 30.Rf7 Rf7 31.Qf7+–) 1–0. b4_player (2230) – Oriovac (1760), GameColony.com, 2003.

5.Bc4 Nf6 6.0–0 0–0 7.d3 c6 8.Nc3 Qe7 9.b5 Be6 10.Be6 Qe6 11.bc6 bc6 12.Ne2 Nbd7 13.Ng3 Rfb8 14.Bc3 Rb7 15.Bd2 Rab8 16.Ng5 Qe7 17.Qf3 Rb2 18.Rfc1 h6 19.Nh3 Qe6 20.Ne2 Ra2 21.Ra2 Qa2 22.Nc3 Qa3 23.Qg3 Rb2 24.f4 Nh5 25.Qh4 ef4 26.Nf4 Nf4 27.Qf4 Bc3 28.Qh6 Bd2 29.Qd2 Qc5 30.Kh1 Ne5 31.d4 Nc4 32.Qd3 Qb5 33.e5 de5 34.de5 Ne5 35.Qd8 Kg7 36.Qd6 Rb1 37.Qd1 Rc1 38.Qc1 Qe2 39.c4 Qc4 40.Qe1 Nd3 41.h4 Qc1 0–1. guest931 – guest1163, ICS blitz, 2000.

5.Bc4 Nf6 6.0–0 0–0 7.d4 ed4 8.Nd4 Ne4 9.Re1 Nf6 10.Nd2 Nc6 11.Nc6 bc6 12.Nf3 Bd7 13.Qd4 Nh5 14.Qe3 Bb2 15.Rab1 Bg7 16.Ng5 a5 17.Qf3 Qg5 18.Re7 Qe7 0–1. guest291 – guest161, ICC, 1999.

5.Bc4 Nf6 6.Nc3 0–0 7.0–0 Be6 8.Be6 fe6 9.b5 a6 10.a4 c6 11.Qe2 c5 12.Qd3 Qe7 13.a5 Nbd7 14.Rfb1 h6 15.Ra3 Kh7 16.Rb3 ab5 17.Rb5 Rfb8 18.Na4 Ne8 19.Bc3+/– Ra7 20.Nb6 Nc7 21.Nd7+– Qd7 22.Rc5! Na6 23.Rcb5 Qc7 24.Rb6 Nc5 25.Qe3 25...Ra6 26.d3 Rb6 27.ab6 Qc6 28.Nd2 Ra8 29.Bb4 Ra6 30.Nc4 d5 31.Bc5 dc4 32.dc4 h5 33.f3 Bh6 34.Qf2 Ra4 35.c3 Rc4 36.Bb4 Bg5 37.Rd1 Kh6? 38.h3 Qa4 39.Rd6 Bf4 40.g3 Qa1 41.Kg2 Bc1 42.Re6 Bb2 43.Qd2 Kg7 44.Qd7 Kh6 45.Bf8 Kg5 46.Qe7 1–0. b4_player (1975) – bkr13 (1880), GameColony.com, 2002.

5.Bc4 Bg4 6.h3 Bh5? 7.g4+– Bg4 8.hg4 h6 9.d4 ed4 10.Nd4 Qg5 11.Nf3 Qg4 12.Bg7 Qg2 13.Rg1 (13.Rg1 Qh3 14.Qd5 Qf3 15.Qb7+–) 1–0. Trkn – guest2978, ICC, 2004.

5.d4 Ne7 6.de5 de5 7.Ne5 Qd1+= 8.Kd1 0–0 9.Bd3 Nec6 10.Nc6?? Bb2–+ 11.Nb8 Rb8 12.c3 Ba1 13.Kc2 Rd8 14.Nd2 Bc3 15.Kc3 Be6 16.Nc4 Bc4 17.Bc4 c5 18.bc5–/+ Rdc8 19.Kb4 b6–/+ 20.cb6?? Rb6–+ 21.Kc3 Rbc6 0–1. kamera (1630) – ZlatanP (1605), GameColony.com, 2002.

5.d4 Bg4 6.de5 Nd7 7.Bb5 =.

5.Be2 Ne7 6.0–0 0–0 7.d4+= Nbc6 8.de5 Ne5 9.Qd4?? (better is 9.Ne5 Be5 10.Be5 de5 11.Nc3=). vello2 – ru31, Live Game Caissa's Web, 2005.

5.h3 Ne7 6.d4 0–0 7.de5 de5 8.Qd8 Rd8 9.Be5 Be5 10.Ne5 a6 11.Bd3 Nd7 12.Ng4 b5 13.0–0 Kg7 14.Nd2 a5 15.ba5+/– Ra5 16.Nb3+– Ra8 17.Bb5 Bb7? 18.f3 Ba6 19.c4 Bb5 20.cb5 Nb6 21.Rfc1 Ra4 22.Rc7 Nec8 23.Ne5 Rb4 24.Nc6 Na8 25.Rb7 Nd6 26.Rb8 Rb8 27.Nb8 Rb5 28.Nc6 Nb6 29.Nbd4 Rb2 30.e5 Ndc4 31.a4 Ne3 32.Kh1 Ng2 33.Rg1 Nh4? 34.a5+– Nd5 35.a6 Nf4 36.Ra1 Nh3 37.a7+– Nf2?? 38.Kh2 Nd3 39.Kh3 g5 40.a8Q?? Nf4 (40...Nf4 41.Kg4 Rg2) 0–1. gtate (1715) – maf, net–chess.com, 2002.

4.f4 Bg7

5.Bc4 Nc6 6.a3 a6 7.d3 Nge7 8.Qf3 0–0 9.g4 b5 10.Bb3 Bb7 11.f5= gf5 12.gf5+= Nc8 13.h4 Qf6 14.Nd2 N6e7 15.c4 Nf5 16.Qf5?? Qf5–+ 17.ef5 Bh1 18.Ne2 Ne7 19.Ng3 Bb7 20.0–0–0 f6 21.Nde4? Bh6 22.Kc2 Kf7 23.c5? Bd5?? 24.cd6=+ Bb3 25.Kb3 Nd5 26.d7?? Be3 27.Bc1? Bd4 28.Bh6 Rfd8–+ 29.Rc1 Rd7 30.Rc6 Rg8 31.Ra6 Nc3?? 32.Rf6+– Ke7 33.Bg5 Ne4+/– 34.Ne4 Kd8?? 35.Rg6 (35.Rg6 Kc8 36.Rg8 Kb7 37.f6+–; 35.Rf8) 1–0. PawnPower – peter_de_sowaro, internet, 2006.

5.Nf3 Qe7 6.b5 Nh6 7.Be2 0–0 8.fe5+/– de5 9.Ba3+– Qd8 10.Bf8 Qf8 11.Nc3 a6 12.a4 Qc5 13.h3 f5 14.Qb1 Be6 15.ba6 b6 16.Ng5 Bf7 17.Nf7 Nf7 18.a5! Bh6 19.ab6 Qd4 20.Qd1 Qb6?! 21.ef5 Bf4 22.Ne4 Nd6 23.Nf2 Bg3 24.0–0 Ne4 25.Bc4 Kg7 26.f6! Kf8 27.Qf3 Bf2 28.Rf2 Qf2 29.Qf2 Nf2 30.Kf2 Nd7 31.a7 Nb6 32.Bb3 Rc8 33.Bd5! Nd5 34.a8Q Ra8 35.Ra8 Kf7 36.Ra6 Nf6 37.Rc6 Ne8 38.Kf3 Ke7 39.Ke4 Kd7 40.Ra6 Nd6 41.Ke5 Ke7 42.d3 Nf5 43.g4 Ne3 44.Re6 Kd7 45.Kf6 Nd5 46.Kf7 Nf4 47.Re3 g5 48.Kg7 1–0. Ivanov,Aleksandr A (2135) – Vorobjov,Evgeniy V (2165), RUS Central Region–ch U16, 2004.

3.Nf3 a6

4.a3 Be7 5.e3 (5.Nc3 Nf6=) 5...f5 (5...Nf6 6.Nc3+=) 6.c4 (6.Bc4 Bf6=) 6...Nf6 7.Be2 Be6 (7...0–0 8.0–0=) 8.Qc2 (8.d4 e4 9.Ng5 Bd7+=) 8...0–0 9.d4 (9.0–0 a5=) 9...e4 10.Nfd2 (10.Ng5 Bd7=) 10...d5 11.Nc3 c6 (11...Qd7 12.0–0=) 12.c5 ˝–˝. Trip,R – Schutjes,J, Barneveld, 2000.

4.a3 Nf6 5.e3 =.

4.a4 Be6 5.e3 (5.e4 Be7 6.d4 Nf6 7.d5 Bg4 8.Bd3 c6 9.c4) 5...Nd7 (5...Nf6 6.Nc3+= (6.d4 e4 7.Ng5 Bd7 8.d5 h6 9.Nh3; 6.Ng5 Bg4 7.Be2 Be2 8.Qe2 d5 9.Be5; 6.Be2 Nd5 7.c3 e4 8.Nd4 Qg5 9.Bf1) 6...d5 7.Ne5 Bb4 8.Be2 Ne4 9.Ne4) 6.c4 (6.Be2 Qf6 7.Nc3 d5 8.b5 Bb4 9.Rb1) 6...h6 (6...Ngf6 7.d4= e4 8.Ng5 Bf5 9.Qc2) 7.Be2 (7.Nc3 Nb6 8.Qb3 a5 9.d4) 7...Ngf6 (7...Qf6 8.Nc3= Qg6 9.0–0; 7...a5 8.b5 Qf6 9.0–0) 8.0–0 Be7 (8...Qe7 9.d4) 9.d3 (9.d4 0–0=) 9...0–0 10.Nbd2 c6 11.Qc2 Qc7 12.Rfc1 (12.d4 a5 13.b5 Rae8=) 12...Rfc8 (12...a5 13.b5=) 13.Bd1 (13.d4 a5 14.b5 cb5 15.ab5 ed4 16.Nd4 Nc5+=) 13...c5 (13...d5 14.Bc3=) 14.b5 (14.bc5 dc5 15.a5 Bd6=) 14...Bf5 (14...b6 15.Rcb1=) 15.Qc3 (15.Rcb1 Re8=) 15...Bh7 (15...b6 16.Be2=) 16.h3 (16.a5 ab5 17.cb5 d5=) 16...Bf8 (16...b6 17.Ne1=) 17.Bb3 (17.a5 ab5 18.cb5 d5=) 17...a5 (17...b6 18.Rcb1=) 18.Rd1 (18.Rab1 Be7=) 18...b6 (18...Be7 19.Bc2=) 19.Bc2+= Qb7 20.Rac1 Re8 21.Nf1 (21.d4 Bc2 22.Qc2 cd4 23.ed4 e4=) 21...Bf5 22.e4 Be6 23.Ne3 Nh5 24.Nd5 Bd5 (24...Nhf6 25.Re1+=) 25.ed5 (25.cd5 Nf4 26.Qd2 f5+/–) 25...Nf4 (25...g6 26.Re1+=) 26.Re1 Nf6 27.Kh2 (27.Qd2 g6+=) 27...Qd7 28.Ng1 (28.Qd2 Rac8+=) 28...Ng4 29.hg4?? Qg4 (29...Qg4 30.g3 Qh5 31.Nh3 Qh3 32.Kg1 Qg2#) 0–1. Poschmann,Hans – Zschorsch,Peter (1835), Wch Seniors, 2003.

4.e4 f5 5.ef5 Bf5 =.

4.e4 Nf6 5.Nc3 (--> 3.e4 a6 4.Nf3 Nf6 5.Nc3).

4.g3 b6 5.Bg2 Bb7 6.0–0 Nc6 7.a3 h6 8.d3 Nge7 9.c4 Rb8 10.Nc3 Nd4 11.Nd5 Nf3 12.Bf3 Ng6 13.Rc1 c6 14.Ne3 Be7 15.d4 Bf6 16.Nf5 Bc8? (better is 16...0–0=) 17.Bc6+– Kf8 18.Be4 a5 19.Qb3 Ne7 20.de5 de5 21.Ne7 Qe7 22.ba5 Qc7 23.ab6 Rb6 24.Qc2 g6 25.c5 Ra6 26.Rfd1 Kg7 27.Qc4 Qa7 28.Rd6 0–1. Shamieh,J (2130) – Ghazi,Hamed, 16th ch–Asian Cities Dubai Cup, Beirut, 2009.

4.e3

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 a6 4.Nf3).

4.e3 Nf6 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 a6 5.Nf3).

3.Nf3 c6

4.e3 Bg4 5.Be2 Nd7 6.d3 Ngf6 7.Nbd2 Be7 8.0–0 0–0 9.c4 Re8 10.Qb3 Bf8 11.Ne4 h6 12.Ng3 a6 13.a4 a5 14.b5 Nh5 15.Nh5 Bh5 16.Ba3 c5 17.Rae1 f5 18.Nd2 Be2 19.Re2 Qh4 20.Bb2 Nf6 21.Qd1 Re6 22.f3 Rae8 23.Qe1 Qh5 24.Qf2 g5 25.Rfe1+= Bg7 26.Nf1 Qg6 27.d4 e4 28.d5 R6e7 29.Bf6 ef3 30.gf3 Bf6=+ 31.Kh1 Bc3 32.Rd1 f4 33.e4 Qh5 34.Qg2 Rg7 35.h3 Kh8 36.Nh2 Qg6 37.Rd3 Bd4 38.Rdd2 h5 39.Rd1 b6 40.Rf1 Rf8 41.Rc2 Rh7 42.Ra2 Rh6 43.Ra3 Rf7 44.Ra2 Rfh7 45.Re1 g4–/+ 46.fg4? hg4–+ 47.Qg4 Qg4 48.hg4 f3 49.Rf1 Rh3 50.Raf2? Be5 (51.Kg1 Bh2 52.Rh2 Rh2 53.Rf3 Rc2–+) 0–1. Kool,Gerard J (2185) – Middelburg,Tom (2235), NED–ch sf Enschede, 1998.

4.e4= Qb6 5.a3 Nf6 6.Nc3 Bg4 7.Bc4 h6 8.h3 Bd7 9.0–0 Be6 10.Be6 fe6 11.d4 ed4 12.Nd4 e5 13.Ne6+/– Nbd7?? 14.Na4+– Qb5 15.Nc7 (15...Kd8 16.Nb5 (16.Na8?! Qa4 17.f4 Qb5+–) 16...cb5 17.Nc3+–) 1–0. b4_player (1785) – Gnatman (1630), GameColony.com, 2002.

4.e4= Qc7 5.d4 h6 6.de5+/– de5 7.Be5 Qe7 8.Nbd2 Nd7 9.Bc3 Ngf6 10.Qe2 b5 11.Nd4 Bb7 12.a4 Qe5 13.Nb5!+– Qg5?? 14.Nc7 (14...Ke7 15.Na8 Ba8 16.Qa6+–) 1–0. b4_player (2160) – kimanthi, GameColony.com, 2002.

4.e4 Bg4 5.Bc4 (5.d4 d5 6.de5 Bb4 7.Nbd2 de4=) 5...Qf6 (5...Nf6 6.h3 Bh5 7.Qe2=+) 6.0–0 Bf3 7.gf3 (7.Qf3 Qf3 8.gf3 Nf6=) 7...g5 8.Qe2 h5 9.Nc3 g4 10.fg4= hg4 11.Qg4 Nd7 12.Ne2 Nh6 13.Qh5 0–0–0 14.Ng3 Be7 15.f4+= Rdg8 16.fe5 Qh4?? 17.Qh4+– Bh4 18.e6 Ne5 19.ef7 Nhf7 20.Bf7 Rg7 21.Be5 de5 22.Rf5 Bg3 23.hg3 Rg3 24.Kf2 (24.Kf2 Rg7 25.Bh5+–) 1–0. Wall,Bill – TheGreatest, internet, 2005.

4.e4 Nf6

5.Nc3 Be7 6.Bc4 0–0 7.0–0 d5 8.ed5 cd5 9.Bb3 e4 10.Nd4 Bb4 11.a3 Bc5 12.Nce2 Nc6 13.d3 Bg4 14.Nc6 bc6 15.Kh1 Re8 16.Bf6 Qf6 17.de4 Be2 18.Qe2 Re4 19.Qf3 Qf3 20.gf3 Re2 21.Kg2 a5 22.a4 Rae8 23.f4 R8e4 24.Kf3 Bd6 25.Rad1 Re8 26.Bc4? R2e4 27.Bd3 Rf4 28.Kg2 Rg4 29.Kh3 Rg5 30.Rde1 Re1 31.Re1 Rh5 32.Kg4 Rh2 33.Re8 Bf8 34.f3 g6 35.Rc8 c5 36.Rd8 c4 37.Bf1 Rf2 38.Bh3 Rc2 39.Rd5 Bb4 40.Bf1 Kg7 41.Rd4 c3 42.Bc4 Rd2 43.Rd2 cd2 44.Bb3 f5 45.Kg3 Kf6 46.Kf4 g5 47.Ke3 Ke5 48.Bd1 h5 49.Kf2 Kf4 50.Kg2 h4 51.Kh2 g4 52.fg4 fg4 53.Kg2 g3 54.Kh1 h3 55.Be2 Ke3 56.Bd1 Kf2 57.Bg4 g2 (57...g2 58.Kh2 g1Q 59.Kh3 Qg3) 0–1. purplepeace (2350) – cancerbarrack (2310), net–chess.com, 2004.

5.d3 Be7 6.c4 Qb6=+ 7.a3 0–0 8.Be2 c5 9.Bc3 Nc6 10.Nbd2 cb4 11.ab4 Bd7 12.0–0 Rfc8?? 13.Rb1 h6 14.b5+/– Nd8 15.d4 Ne6 16.de5 de5 17.Be5 Nc5 18.Bd4 Qe6 19.e5 Nh7 20.Re1 Ng5 21.Bc5 Bc5 22.Ng5+– hg5 23.Ne4 Be7 24.h3 Rd8 25.Qc2?? Rac8 26.Rbd1 b6?? 27.Nd6 Bd6 28.ed6 Qh6? 29.Qd3 Be6 30.Qd4 Qf6 31.Qe4 Rd7 32.Bd3 g6 33.Bf1 Rcd8 34.Qc6 Qf4 35.Re4+– Qf5 36.Red4 Qc5 37.Qc5 bc5 38.R4d2 Kg7 39.Kh2 g4 40.h4 g5 41.hg5 Rh8? 42.Kg3 Rh5 43.f4 gf3 44.Kf3 Rg5 45.Be2 Kf6 46.Rf1 Ke5 47.Re1 Rf5 48.Kg3 Kf6 49.Rdd1 Kg5?? 50.Bg4+– Rf6 51.Be6 Re6 52.Rd5 Kf6 53.Rf1 Kg6 54.Rc5 Red6 55.Rf3 a6 56.ba6 Ra6+/– 57.Rf4 f6 58.Kg4 Rg7 59.g3 Kf7 60.Kh4 Ra1 61.Rc7 Kg8 62.Rg7 Kg7 63.Kg4 Kg6 64.Rd4 Rc1 65.Kf4+– Rc3 66.g4 Rc2 67.Ke4 Kg5 68.Kd5 Rc3 69.c5 Rc2 70.Kd6 f5 71.gf5 Kf5 72.Rd5 Ke4 73.c6 Rc4 74.Rc5 Rd4 75.Ke7 Ra4 76.c7 Ra7 77.Kd8 (77.Kd8 Ra8 78.c8Q Rc8 79.Rc8+–) 1–0. Bull_Dog_Baz – jammboy, ChessWorld.net, 2009.

3.Nf3 Nc6

4.a3 Nf6 5.b5 Ne7 6.e3= Ng6 7.Bc4 Be7 8.0–0 a6 9.ba6 ba6 10.Ng5 0–0 11.Nc3 Rb8 12.Ra2 c6 13.f4 d5–/+ 14.Bb3 h6 15.fe5=+ Ne5 16.Nf3 Bg4 17.Nd5+= Nf3 18.gf3 Bh3 19.Ne7 Qe7 20.Rf2 Rfd8 21.Qe2 a5 22.Qc4= Nd5 23.e4?? Nf4 24.Kh1 Be6 25.Qc3+= f6 26.Be6 Qe6 27.Ra1 Rb7 28.Qa5+/– Rdb8 29.Bc1 Rb1 30.Qa7 Qc8 31.Qd4 Ra1?? 32.Qa1+– Qh3 33.d4 Qh4 34.Be3 Nh3 35.Rg2 Rb5 36.a4 Rh5 37.a5 (37.a5 Rb5 38.a6+–; 37.Qf1 Ng5+–) 1–0. Wall,Bill – Guest3732, internet, 2005.

4.a3 g6 5.c4 Bg7 6.b5 Nce7 7.Ng5 h6 8.Nf3 f5 9.e3 Nf6 10.d4 Nd7 11.de5 de5 12.c5 0–0 13.Bc4+= Kh7? 14.c6?? bc6= 15.bc6 Nc6–/+ 16.Bd5 Bb7 17.Nc3 Nb6 18.Ba2 e4–+ 19.Nd4 Nd4 20.ed4 Qd4 21.0–0 Qd1 22.Rad1 Rad8 23.Rd8 Rd8 24.Ba1 a6 25.Ne2 Ba1 26.Ra1 Kg7 27.Nf4 Kf6 28.Ne6 Rd7?? 29.Nc5=+ Bc8 30.Nd7 Bd7 31.Kf1 c5–/+ 32.Ke2 Bb5 33.Ke3 Ke5 34.f4 ef3 35.gf3 f4 36.Kd2 Nd5 37.Re1 Kd6 38.Kc1 g5 39.Rd1 Bc6 40.a4 Ke5–+ 41.a5 Nb4 42.Re1 Kd6 43.Re6 Kd7 44.Rh6? Na2 45.Kb2 Nb4 46.Rh5 Bf3 47.Rg5 Be4 48.Rg4 Nd5 49.h4 f3 50.Rg1 Ne3 51.h5 f2 52.Rc1 f1Q 53.Rf1 Nf1 54.h6 Ne3 55.Kc3 Kc6 56.Kd2 Nc4 57.Kc3 Na5 58.Kd2 Bh7 59.Ke3 Kd5 60.Kd2 c4 61.Kc3 Nb3 62.Kb2 a5 63.Ka3 a4 64.Kb2 Nd2 65.Kc3 Ne4 66.Kb2 Kd4 67.Kc2 (67.Ka3 c3 68.Ka4 c2 69.Ka3 c1Q 70.Kb4 Qb2 71.Ka5 Kc5 72.Ka4 Qb4#) 0–1. Nautiluschess – Nobby, ICS blitz, 2000.

4.a3 h5 5.b5 Nd4 6.Nd4+/– ed4 7.Bd4 f6 8.e3+– g6 9.Bd3 Rh6 10.Qf3 f5 11.Bc4 Nf6 12.Nc3 c6?? 13.bc6 Qa5 14.cb7 (14.cb7 Rb8 15.bc8N Rc8 16.Be6+–) 1–0. Wall,Bill – Noyes, internet, 2000.

4.b5 Nd4 5.Nd4+/– ed4 6.Bd4 Qh4 7.e3 Bg4 8.Be2 Bf5 9.Nc3 0–0–0 10.Ba7 Qg5 11.Bf3 Nf6 12.Bd4 Qg6 13.d3 c6 14.bc6 bc6 15.Bc6 (15.Bc6 Bd7 16.Bf3+–) 1–0. Wall,Bill – JanetN, Microsoft Gaming Zone, 2000.

4.b5= e4 5.bc6+/– ef3 6.cb7 Bb7 7.ef3 Qe7 8.Be2+/– 0–0–0 9.0–0+– Nf6 10.Re1 Nd5 11.Bd4 Nf4 12.Bf1 Qg5 13.Ba7 g6 14.Nc3 Bg7 15.Be3 Bc3 16.dc3 (16…Nh3 17.Kh1 Qe3 18.fe3 (18.Re3?! Nf2 19.Kg1 Nd1 20.Rd1 Rhe8+=; 18.gh3?! Qf2 19.Bg2 Rhe8=) 18...Nf2 19.Kg1 Nd1 20.Red1+–) 1–0. Woschkat,Karl_Heinz – Eckert,D, Telecomm, 1995.

4.c3 e4 5.b5 ef3 6.bc6 bc6 7.ef3 =+.

4.c3 Bg4 5.b5 Bf3 6.ef3= Nce7 7.d4 Ng6 8.Bd3 Qg5 9.0–0 Nf4 10.g3 Ng6 Bc1 Qf6 12.d5 N8e7 13.Bc2 Nf5 14.Nd2 0–0–0 15.Ne4+– Qe7 16.a4 f6 17.c4 Nd4 18.Be3 f5 19.Nc3 e4?? 20.Bd4+– 1–0. Wall,Bill – CN, Internet, 2003.

4.d4 Nf6 5.e3 ed4 6.ed4 Be7 7.Bc4 d5 8.Bb5 0–0 9.0–0 Re8 10.Ne5=+ Bd7 11.Nd7 Qd7 12.Nc3? Bb4–/+ 13.Re1 Qd6 14.Re2 a6 15.Bc6 bc6 16.Rb1 a5 17.Na4 Ng4?? 18.f3?? Qh2 19.Kf1 Ne3 20.Kf2 0–1. guest97 – guest286, ICC, 1999.

4.e4 Nb4=+ 5.d4 Bg4 6.de5 Bf3 7.Qf3?? Nc2–+ 8.Kd1 Na1 9.Bc4 de5 10.Kc1 f6 11.Rd1 Bd6 12.Qf5 Qe7 13.Ba3 g6 14.Qf3 Ba3 (14...Ba3 15.Qa3 Rd8 16.Qe7 Ne7 17.Rd8 Kd8–+) 0–1. guest545 – guest172, ICC, 1999.

4.a3 Bg4

5.b5 Bf3 6.gf3 Na5 7.e3 Nf6 8.d4 ed4 9.Qd4 d5 10.Bc3 Nc4 11.Bc4+/– dc4 12.Qc4 Bd6 13.Rg1 0–0 14.Nd2 Bh2? 15.Rg7 Kg7 16.Ne4 Kg6 17.Nf6 Qd6 18.Qg4 Kh6 19.Qh5 Kg7 20.Qh7# 1–0. marekt – aidanbru, internet, 2008.

5.e4 Nf6 6.Nc3 Be7 7.Be2 Bf3 8.Bf3 d5 9.ed5 Nd4 10.Ne4 Ne4 11.Be4+/– 0–0 12.0–0 c6? 13.dc6 bc6 14.c3 Ne6 15.Bc6 Rc8 16.Bb7 Rc7 17.Ba6 Bg5 18.d4 ed4+/– 19.cd4 Bf6 20.Rb1 Nd4 21.Bd4 Bd4+= 22.Qg4 Qd6 23.b5 Rc2 24.Rbd1 Re8?? 25.Rd4 Qa3 26.Qd7 Rce2 27.Qa7 Qa1 28.Rdd1 Qd1–/+ 29.b6?? Qf1!! (29...Qf1 30.Kf1 Re1#) 0–1. Neumann,Frank (1650) – Krause,Volker, RSS5E easy–60, 2008.

4.b5 Na5

5.e4 a6 6.c4 Nf6= 7.d3 ab5 8.Be2?? g5?? 9.0–0 Bg4 10.d4?? Nc4 11.Bc3? Bg7 12.de5 Ne4–+ 13.Be1? d5 14.Nd4 Be5 15.Bg4 c6 16.Nc3–/+ Qd6 17.g3 Qc5 18.Ne4 de4–/+ 19.Bc3 b4?? 20.Nb3= Qe7 21.Be5+/– Ne5 22.Bh3 Rd8 23.Qe2 Rd3? 24.Bg2 f5+= 25.Qh5 Kd7 26.Qg5?? Qg5–+ 27.Nc5 Kd6 28.Nb7 Kc7 29.Nc5 Rd6 30.a4 Kb6 31.Nb3 Nf3 32.Kh1 Qh6 33.a5 Kb5 34.a6 Qh2# 0–1. Neumann,Frank (1650) – Adler,Bernd (1815), RSS7E easy–62, 2007.

5.e4 Nf6 6.d3 b6 7.c4 Nb7 8.Be2 Be7 9.0–0 a5 10.Nh4 0–0 11.Bc1 Ne4=+ 12.de4 Bh4 13.Nd2 Nc5 14.Nf3 Ne4 15.Nh4 Qh4 16.g3 Qf6 17.Bf3? Bb7 18.Bg2 Nc3 19.Qc2 Bg2 20.Kg2 e4 21.Bb2 Qf3 22.Kh3 Ne2 23.Rae1?? Nf4 24.Kh4 Qh5# 0–1. pinecrest1981 – raystar, Live Game Caissa's Web, 2005.

4.b5 Nb4

5.a3 Nd5 6.e4 Nb6 7.Bd3 Nf6 8.0–0 Qe7 9.a4 a6 10.ba6 ba6 11.a5 Nbd7 12.Nc3 Bb7 13.Ne2 d5 14.ed5+= Bd5 15.Ne5?? Ne5–+ 16.Re1 Qc5?? 17.Be5+– Bd6 18.Bd4 Qc6 19.Nf4 Kd7 20.Bf5 Kd8 21.Bf6 gf6 22.Nd5 Qd5 23.Be4 Qe5 24.g3 Rb8 25.d4 Qg5 26.Rb1 Rb1 27.Qb1 Re8?? 28.Qb8 Kd7 29.Bc6!! Kc6 30.Qe8 Kd5 31.Qf7 Kd4 32.Rd1 Kc3 33.Qb3# 1–0. BorisOwl – jquan, GameColony.com, 2001.

5.c3 Nd5= 6.e4 Nb6 7.Be2 a6 8.ba6 ba6 9.0–0 Nf6 10.d3 Be7 11.c4 0–0 12.Na3 Bg4 13.Nd2 Be2 14.Qe2 Qd7 15.Nb3 a5 16.Nd2 Na4 17.Bc1 Nc3 18.Qe1 Qg4 19.Nf3 Na4= 20.h3 Qc8 21.Qd1 Qd7 22.Nb5 c6 23.Qa4+/– cb5 24.cb5 Rfb8 25.Rb1 d5? 26.Ne5+– Qe8 27.Nc6 Rb6 28.Ne7 Qe7 29.Be3 Rb7 30.b6 de4 31.d4 Nd5 32.Rb5 Nc3? 33.Qb3?? Nb5=+ 34.Qb5 Qd7 35.Qf5?? (better is 35.Qd7 Rd7 36.Rb1=). pinecrest1981 – Sonny52, Live Game Caissa's Web, 2005.

5.c4 Bf5 6.d3 a5? 7.a3+– c5 8.ab4 cb4 9.e4 Bg4 10.Be2 Be7 11.Nbd2 b6 12.Nf1 Bf6 13.Ne3 h5 14.h3 Bf3 15.Bf3 Ne7 16.Bh5 Ng6 17.g3 Bg5 18.Nf5 Qf6 19.Bg4 Ne7 20.Bc1 g6 21.Bg5 Qg5 22.Nd6 Kd8 23.Nf7 Ke8 24.Ng5 Rd8 25.0–0 1–0. pumpkin (2480) – pdobson, net–chess.com, 2003.

5.e4 d5 =.

5.e4 Nf6? 6.a3+– Nc2 7.Qc2 Bd7 8.Bc4 Qe7 9.0–0 0–0–0 10.Rc1 b6 11.Bf7 (11...Bb5 12.Nc3 Qf7 13.Nb5+–; 11.Be2 Bg4+–) 1–0. Wall,Bill – Savant, internet, 2003.

4.b5 Nce7

5.Nc3 Nf6 6.e4 Ng6 7.d4 ed4 8.Qd4 Be7 9.Bc4 0–0 10.0–0 Bg4 11.Nd2 a6 12.ba6 ba6 13.Nd5 c5 14.Qc3+/– Ne5 15.f4 Nd5? 16.Bd5+– (16…Bf6 17.fe5 Be5 18.Qa3 Bb2 19.Qb2+–) 1–0. Marre – beuwulf, zagraj.pl, 2003.

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nc6 4.b5 Nce7 5.Nf3).

5.e4 Bd7 6.d4+= ed4 7.Bd4 Nf6 8.Bd3 d5 9.Bf6 gf6 10.ed5 Nd5 11.0–0 Bg7 12.Re1+/– Kf8 13.c4+= Nf4 14.Qd2 Nd3 15.Qd3+/– f5 16.Qa3 Kg8 17.Nc3 h6 18.Rad1+– Bf8 19.Qb2 Bg7 20.Ne5 Be5 21.Re5 Qf6 22.Nd5 Qg5 23.Nc7 Rc8 24.Rd7 h5 25.Nd5 Rc4 26.Re8 Kh7 27.Qh8 Kg6 28.Rg8 1–0. market (1735) – pennylane (1795), GameColony.com, 2002.

5.e4 f5 6.ef5 Nf5 7.Qe2 =.

3.Nf3 Nd7

4.Nc3 a5 A) 5.a3 f5 (5...Ngf6 6.e4 ab4 7.ab4 Ra1 8.Ba1=; 5...Be7 6.e4 Ngf6 7.Be2 0–0 8.0–0=; 5...ab4 6.ab4 Ra1 7.Ba1 f5 8.e4=) 6.e3 Ngf6 7.Bc4 Nb6 8.Bb5=; B) 5.b5 Ngf6 6.e4 Nc5 7.d4 Nce4 8.de5=.

4.Nc3 a6 5.d4 Qf6 6.e4 ed4 7.Nd5 Qf5?? 8.ef5+– Ndf6 9.Nc7 (9...Ke7 10.Na8 Bf5 11.Qe2 Kd7 12.Qc4+–) 1–0. kamret (2215) – indiangm, GameColony.com, 2003.

4.Nc3 Ngf6 5.e4 a5 6.a3 ab4 7.ab4 Ra1 8.Ba1 =.

4.Nc3 g6 5.d4 Bg7 6.de5 Ne5 7.e4 Ne7 8.Ne5 Be5 9.Bb5 Bd7 10.Bd7 Qd7 11.0–0 0–0 12.f4 Bg7 13.Qd3 f5 14.Rae1 c6 15.e5 d5 16.Na4 b6 17.e6 Qd6 18.Bg7 Kg7 19.a3 a5 20.Nb6 Ra7 21.Qd4 Kg8 22.Nd5 c5 23.Nf6 Kh8 24.Qd6 1–0. COMP – COMP, 2003.

4.c4 c6 5.e3 (5.Nc3 Ngf6 (5...Nb6 6.e4 Bg4 7.h3 Be6 8.Qb3=) 6.e4 Qb6 7.a3 c5 8.Qa4=; 5.e4 Ngf6 (5...Qb6 6.Qb3 c5 7.Nc3 Qb4 8.Qb4=; 5...Ndf6 6.Nc3 Qb6 7.a3 Bg4 8.Be2+=; 5...c5 6.a3 a5 7.Qa4 Ngf6 8.Nc3=) 6.Nc3 Qb6 7.a3 a5 8.b5=) 5...Ngf6 6.d4 (6.Nc3 Be7 7.d4 e4 8.Nd2=) 6...e4 7.Nfd2 d5 8.c5 (8.Qb3=) 8...g6 (8...b6 9.Nc3=) 9.Nc3 Bh6 10.h4 Qc7 11.Qb3 (11.Be2 b6=) 11...Ng4 12.Nce4 de4 13.d5 (13.Ne4 0–0 14.h5=) 13...cd5 (better is 13...Ndf6 14.Be2 0–0–/+) 14.Bh8+/– Be3 15.0–0–0 (15.fe3 Qg3) 15...Nc5 16.bc5 Qc5 17.Kb1 Nf2 18.Bb5 Ke7 (better is 18...Kf8 19.Bb2 A) 19...Nh1?? 20.Ba3 Kg8 21.Bc5 Bc5 22.Qd5+–; B) 19...Nd1?? 20.Ba3 Bg4 21.Rd1 Bd1 22.Bc5 Bc5 23.Qd5+– (worse is 23.Qd1 a6+–); C) 19...Kg8=) 19.Rhf1?? (19.Bb2 Qb6 20.Qd5 Bd2 21.Qe5 Qe6 22.Qc5 Qd6 23.Bf6 Kf6 24.Qd6 (24.Qf2 Bf5 25.Rd2 Qd2 26.Qd2 e3 27.Qc2 Bc2 28.Kc2 Rd8=) 24...Kg7 25.Qe5 Kh6 26.Rd2+–) 19...Nd1–/+ 20.Ne4?? (better is 20.Rd1 Bg4 21.Rc1–+) 20…Qc1# 0–1. Alonso (2195) – Garcia (2145), Hollywood KPFK Spring Classic, 1985.

4.c4 Be7 A) 5.Nc3 a5 (5...Ngf6 6.e4 a5 7.a3 ab4 8.ab4=) 6.a3 Ngf6 7.e4 0–0 8.Be2=; B) 5.a3 Ngf6 6.d4 a5 7.Nc3 ab4 8.ab4=; C) 5.d4 e4 (5...Ngf6 6.Nc3 0–0 7.a3 ed4 8.Qd4=) 6.Nfd2 Ngf6 7.Nc3 d5 8.b5+=; D) 5.e4 Ngf6 6.Nc3 a5 7.a3 0–0 8.Be2=.

4.c4 Ngf6 A) 5.Nc3 Be7 (5...Nb6 6.e4 Be6 7.Qb3 Bg4 8.Be2=; 5...a5 6.b5 Be7 7.e3 0–0 8.Be2=; 5...c5 6.bc5 Nc5 7.d4 ed4 8.Nd4=) 6.d4 0–0 7.a3 e4 8.Nd2+=; B) 5.d4 e4 (5...Be7 6.Nc3 a5 7.b5 ed4 8.Nd4=; 5...Nb6 6.de5 Ng4 7.e4 Qe7 8.ed6+/–) 6.Nfd2 d5 7.a3 e3 8.fe3+=.

4.d3 a6 5.e3 Nc6 6.a3 Bf5 7.c4 h6 8.Nc3 Bg4 9.Be2 a5 (better is 9...Be7!?=) 10.b5+/– Ne7 11.d4 e4 (11...Ng6!?+/–) 12.Nd2 b6?? (better is 12...Be2 13.Qe2 Nf5+–) 13.Bg4+– Ng4 14.Qg4 f5 15.Qh3 a4 16.f3 c5 (16...ef3 17.Qf3 g6 18.Nd5 Nd5 19.Qd5+–) 17.bc6 Nc6 (17...g6 18.fe4 Bg7 19.ef5 gf5 20.Qh5 Kf8 21.Qf3+–) 18.Qh5 Kd7 19.Qf5 Kc7 20.Nde4 Ne7 (20...Kb8 21.Rc1+–) 21.Nb5 Kb7 (21...Kb8 22.Qe6 Nc6 23.d5+–) 22.Ned6 Kb8 23.Qe6 Nc8 24.Nf7 Qh4 25.Ke2 Rg8 26.Ne5 Rh8 (26...Qe7 27.Nc6 Kb7 28.Ne7 Be7 29.Qd7 Ka6 30.Nc7 Kb7 31.Nd5 Ka6 32.Qa4 Kb7 33.Qd7 Ka6 34.Nb4 Bb4 35.ab4) 27.Nd7 Kb7 28.Qd5 Ka6 29.Qa8 Na7 30.Qa7 1–0. aspasio – rimazu (2100), net–chess.com, 2015.

4.e3 f5 5.Be2 g6 6.0–0 Bg7 (6...Bh6 7.Nc3+/–) 7.d3 (7.Nc3!?+/–) 7...Ne7+= 8.Nbd2 0–0 9.Nc4 (9.c3 a5+=) 9...h6 (9...Nb6 10.c3=) 10.Qd2 g5 11.Ne1 (11.a4 Nb6+=) 11...Nf6 12.f3 (12.a4 Be6=) 12...Ng6 (12...Be6 13.Na5 b6 14.Nb3=) 13.g3 h5 14.f4 (14.e4 f4=) 14...ef4 15.ef4 g4 (15...gf4 16.gf4 h4 17.Kh1+=) 16.Ng2+= Re8 17.Rfc1 (17.a4 h4 18.Ra3 Bh6 19.Bf6 Qf6=) 17...c6 18.Nge3?? (18.a4!?=) 18...Qe7?? (better is 18...b5 19.Na5 Re3 20.Qe3 Nd5 21.Nc6 Qd7–+) 19.Bf1 Qc7 (19...b5 20.Re1 bc4 21.Nf5 Bf5 22.Re7 Re7 23.dc4=) 20.Bf6 (20.Re1!?+=) 20...Bf6= 21.Ng4?? Bd4 22.Nge3 Ba1 23.Ra1 d5 24.Na5 Qg7 25.Re1 h4 26.Bh3?? hg3 27.hg3? Nh4 28.Bg2?? Qg3–+ 29.Qf2 Nf3! 30.Kf1 Qf2 31.Kf2 Nh4 32.Bh3 d4 33.Nec4 Re1 34.Ke1 Ng6 35.Nd6–/+ Nf4 36.Bf5 Bf5 37.Nf5 Re8 38.Kd1 Ne2 39.a3?? Nc3 40.Kc1 Re1 41.Kb2 Rb1# 0–1. Pluta,Natalia – Grzesiek,Wiktoria, Turniej Ostatniej Szansy – D13 Poland, 2011.

4.e4 A) 4...a5 A1) 5.a3 Ngf6 (5...ab4 6.ab4 Ra1 7.Ba1 Ngf6 8.Nc3=; 5...Be7 6.Nc3 Ngf6 7.Be2 0–0 8.0–0=) 6.Nc3 c6 7.d4 ab4 8.ab4=; A2) 5.b5 Ngf6 (5...Nc5 6.d4 ed4 7.Qd4 Qe7 8.Bd3=) 6.Nc3 Nc5 7.d4 Nce4 8.de5=; B) 4...Ngf6 5.Nc3 Be7= (5...a5 6.a3 ab4 7.ab4 Ra1 8.Ba1=) 6.Bc4 Nb6 7.Be2 Be6 8.0–0=.

4.d3 Be7

5.e4 0–0 6.Be2 Be6 7.0–0 h6 (7...Qd7 8.Ng5=) 8.Nbd2 Nbd7 9.d4 Nb6 (9...d5!? 10.ed5 Nd5+=) 10.de5+/– de5 11.Be5 (11.a3 c5+=) 11...Ng4 (11...Bb4 12.c3 Bd6 13.Bd6 cd6 14.a4=) 12.Bb2 (12.c3 Ne5 13.Ne5 a5 14.ba5 Ra5+=) 12...Na4 13.Bd4 Qd6 (better is 13...Bb4 14.Nb1 c5=) 14.c4 b5 (better is 14...Nh2!? 15.Qa4 Nf1+–) 15.cb5+– a6?? (15...Qb4 16.Qc2 Rfd8+–) 16.ba6 (16.ba6 Qb4 17.Qc2+–) 1–0. Sapareva,Magdalena (1710) – Mirovanski,Vasil, 3rd Bulgaria, Memorial Hristo Gerenski, 2010.

5.e4 0–0 6.Be2 Bg4 7.Nbd2 Nh5 8.h3 Be6 9.d4 Nf4 10.Bf1 d5 11.de5 de4 12.Ne4 Bb4 13.c3 Be7 14.Qd8 (14.Qc2!?=) 14...Rd8–/+ 15.Rd1 (15.Bc1 Nd3 16.Bd3 Rd3+=) 15...Rd1 16.Kd1 Ba2 17.g3 Bd5 18.gf4 (18.Nfd2 Ne6–/+) 18...Be4 19.Be2 (19.Ke2 Nd7–/+) 19...Nd7 (19...Nc6 20.Kc1–+) 20.Rg1 (20.Kd2 Nb6 21.Ra1 Rd8 22.Ke3 Bd5–+) 20...Rd8 21.Ke1 Nc5 22.Nd4 a6 (better is 22...Nd3!? 23.Bd3 Bd3–+) 23.f5 Kf8 (23...g6 24.f3 Bd3 25.f4–/+) 24.Ba3 (24.f3 Nd3 25.Kd2 Nb2 26.fe4 Bc5–/+) 24...Re8 25.f3 Nd3 26.Kd2 Ba3 27.Bd3 (better is 27.fe4!? Ne5 28.Rb1–/+) 27...Bd3–+ 28.Kd3 Re5 29.f4 (29.Rb1 b6 30.Ra1 Bd6 31.Ra6 Ra5 32.Ra5 ba5–+) 29...Re8 30.Nf3? (30.Rb1 b6 31.Ra1 Bd6 32.Ra6 Bf4–+) 30...f6 (better is 30...Bc5!? 31.Rf1 Re3 32.Kd2–+) 31.Rb1 Rd8 (better is 31...Bc5 32.Nd4 Bd4 33.Kd4–+) 32.Kc4? (better is 32.Kc2 b5 33.Nd4–+) 32...b5 33.Kb3 Bc5 0–1. Krueger,Bernhard – Hohlbein,Jens, Baunatal op, 1995.

4.e3 Ngf6

5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Nbd7 5.Nf3).

5.Be2 g6 6.c4 Bg7 7.Nc3 0–0 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.0–0 Nbd7 8.Nc3).

3.Nf3 e4

4.Nd4 Nc6 5.Nc6 bc6 6.e3 Bd7 7.d3 Nf6 8.Nd2 d5 9.a3 ed3 10.Bd3 Bd6 11.c4 0–0 12.Qc2 h6 13.c5 Be7 14.0–0 Qc8 15.Nf3 Re8 16.Rad1 Bg4 17.Be2 Qf5 18.Qa4 Bf3 19.Bf3 Qe6 20.h3 (20.Qa5 Reb8+/–) 20...Reb8 21.Bd4 a5 22.ba5 Rb5 23.a6 Qc8 24.Be2 Ra6 25.Qc2 (25.Bb5?! Ra4 26.Ba4 Qa6+=) 25...Ra3 26.Bb5 cb5 27.Qb2 Qa6 28.Ra1 Ra4 29.Qb3 (29.Ra4 Qa4 30.Ra1 Qc4+–) 29...Ne4? (better is 29...Qc6!?+/–) 30.Qd5 Nc5 31.Qe5 Ne6+/– 32.Ra4 ba4 33.Ba1?? Qd6?? 34.Qb5 a3 35.Qb8 Kh7 36.Qb1 Kg8 37.Rd1 Qb4 38.Qa2 c5 39.Rb1 Qa4 40.Rb8 Nf8 41.Rb1 c4 42.Rc1 Qb3 43.Qc2 Nd7 44.Qe4 Bb4?? 45.Qg4+– c3 46.Qd7 a2 47.Qd3 Kh8 48.Kh2 Qa3 49.Rc3 Bc3 50.Qc3 (50.Qc3 Qc3 51.Bc3+–) 1–0. Heinrichs,R (1795) – Schroiff,Rene, Sparkassen Open, Nettetal GER, 2010.

4.Nd4 d5 5.e3 Bb4 6.a3?? Be7–/+ 7.c4 c5 8.Nb5 a6 9.N5c3 d4 10.ed4 cd4 11.Nd5 Nf6 12.Bd4 Nd5 13.cd5 Bf6 14.Bf6 Qf6 15.Nc3 0–0 16.Bc4 Re8 17.0–0 b5 18.Ba2 Bb7 19.Re1= Qd6 20.Ne4+/– Qf4?? 21.Nf6!!+– Qf6 22.Re8# 1–0. guest1176 – guest538, ICS blitz, 2000.

4.Nd4 Be7 5.e3 Nf6=+ 6.Be2 0–0 7.Nc3 c5 8.Nb3 cb4–/+ 9.Na4?? Bd7–+ 10.0–0 Ba4 11.Nd4 Nbd7 12.Nf5 Rc8 13.Ne7 Qe7 14.Rc1 Ne5 15.d3 ed3 16.Bd3 Nd3 17.Qd3 Qe4 18.Qe4 Ne4 19.Rcd1 Bc2 20.Rd4 d5 21.f3 Nf6 22.e4 de4 23.fe4 Be4 24.Rf4 Rc2 25.Rb4 Rg2 26.Kf1 Rh2 27.Rbe4 Ne4 28.Re4 Rd8 29.Bc3 h6 (29...h6 30.Rd4 Rd4 31.Bd4 Ra2–+; better is 29...Rd1!? 30.Re1 Rh1 31.Kf2 Rhe1 32.Be1 Re1 33.Ke1–+) 0–1. Kus,Maria – Kus,Sabina, Poland–ch U10 Girls, 2001.

4.Nd4 c5

5.bc5 dc5 6.Nb3 c4 7.Nd4 Bg4 8.Qc1 Na6 9.e3 Rc8.

5.bc5 dc5 6.Nb3 Be6 7.e3 Qb6 8.Nc3 (8.Na3 Nd7=) 8...Nf6 (8...c4 9.Nd4 Na6 10.Rb1+/–) 9.a4 a6 10.Be2 Bd6 11.a5 Qc7 12.h3 Qe7 (12...0–0 13.Ra4+=) 13.d3 ed3 14.cd3 (14.Bd3? c4–+; 14.Qd3? c4 15.Qd1 cb3 16.cb3 Nc6–+) 14...Nc6 15.g4 h6 16.Nd2 Bc7 17.Nce4 Ne4 (worse is 17...Na5 18.Nf6 gf6 19.Ne4+–) 18.Ne4 f6 (worse is 18...Ba5 19.Ra5 Na5 20.Bg7+/–) 19.g5 (better is 19.Bc3!?+=) 19...hg5–/+ (19...Ba5 20.Ra5 f5 21.Bh5 Kd8 22.Nc5 Na5 23.Bg7 Qc5 24.Bh8 hg5 25.Bf6 Kd7 26.Bg5+=) 20.Bh5 Bf7 (20...Kd8 21.Bc3–/+) 21.Bf7 Qf7 22.Qf3 (22.Rc1 Ba5 23.Bc3 Bc7–/+) 22...0–0–0 (better is 22...c4!? 23.d4 Rd8–+ (23...Ba5 24.Ra5 Rd8 25.Rf5+/–)) 23.Nc5+= Qd5 (23...Na5 24.Qg4 f5 25.Qb4= (25.Qg5 Qd5 26.e4 Qc5–+); 23...Ba5?! 24.Ke2 Bb6 25.Rac1 Bc5 26.Rc5–/+) 24.Qd5 Rd5 25.d4 Ba5 26.Ke2 Bb6 27.Na4 Ba7 28.Nc3 Ra5 29.Ra5 Na5 30.Kd3 Nc6 31.Ne4 Kd7 32.Ba3 b6 33.Bd6 Bb8 34.Bb8 Rb8 35.f4 gf4–+ 36.Rg1 fe3 37.Rg7–/+ Ke6 38.Rg6 Nb4–+ 39.Ke3 Nd5 40.Kd2 Rh8 41.Rg3 Rh4 42.Kd3 Rh3! 43.Kc4 b5 44.Kc5 Rh7 (44...Rh7 45.Ng5 fg5 46.Re3 Ne3 47.d5 Nd5–+) 0–1. Josefsson,Kenneth – Harald,Olav, FIN–SWE, 1995. (=1.Nf3 d6 2.b4 e5 3.Bb2 e4 4.Nd4 c5)

5.bc5 dc5 6.Nb3 Nf6 7.e3 Nc6 8.Bb5 Bd7 9.0–0 Bd6 10.f4 (10.d3 Qc7 11.Bf6 gf6+=) 10...a6 11.Be2 0–0 12.d3 ed3 13.Qd3 Be7 14.Bf3 Qc7 15.c4 Rad8 16.Qe2 Rfe8 17.g4 h6 18.N1d2 a5 19.g5 hg5 20.fg5 Nh7 21.Bd5 Ng5 22.Qh5 Now all is on f7 22...Ne5 (22...Rf8 23.Ne4 Ne6 24.Nec5 Bc5 25.Nc5+/–) 23.Ne4 Bc6 24.Be5 Qe5 25.Bf7 Nf7 26.Qf7 Kh8 27.Rf5 Qe4 28.Rh5 Qh7 29.Qg6 Qh5 30.Qh5 Kg8 31.Rf1 Bf6 32.Rf6 gf6 33.Qg6 Kh8 34.Qf6 Kh7 35.Qh4 Kg6 36.Qg4 Kh6 37.Qf4 Kh5 38.Qf5 Kh4 39.Qc5 Be4 40.Kf2 Rd1 41.Nd4 Rd2+= 42.Ke1 Ra2 43.Qd6 Kh5? 44.Ne6+– Re6 45.Qe6 Bc6 46.e4 a4 47.Qe5 Kh6 48.h4 1–0. Taulien,Hans_Juergen – Khokhlov,Igor (2405), 60yearsBdF–WS35, 2006.

5.bc5 dc5 6.Nb5 Nf6 7.e3 Nc6 8.Bf6 Qf6 9.Nc7 (9.Nc7 Kd8 10.Nc3=; 9.N1c3 Qd8). Goudreau,Alec – McCall,Jerry, corr IECC Knockout, 1996.

3.Nf3 Be6

4.d4 e4

5.d5 Bd7 6.Nd4 =.

5.d5 ef3 6.de6 fe6 7.ef3 Nf6 8.Bd3 Be7 9.0–0 0–0 10.Re1 e5 11.f4 Nbd7 12.fe5 Ne5 13.Bf5 Nfd7 14.Qd5 Kh8 15.Bd7 Qd7?? 16.Be5+– c6 17.Qd4 Rf7 18.Nc3 Qf5 19.Bg7 Kg8 20.Bh6 Bf6 21.Qa7 Rff8 22.Qe3 Rae8 23.Qg3 Kh8 24.Bf8 Rf8 25.Re2 Be5 26.Qe3 Qh5 27.h3 Bc3 28.Qc3 1–0. b4_player (2060) – bkr13 (1835), GameColony.com, 2002.

5.d5 Bf5 6.Nd4 Bg6 7.c4 c6 8.g3 Nf6 9.dc6 bc6 10.Bh3 Be7 11.Qa4 0–0 12.Nc6 Nc6 13.Qc6 d5 14.c5 d4 15.0–0 Bh5 16.Qb5 (16.Rd1 d3 17.Nc3 Qd4=) 16...Bg4 17.Bg4 Ng4 18.Rd1 Bf6 19.Qc4 Ne5 20.Qc1 Bg5 21.Qc2 d3 22.ed3 ed3 23.Qb3 Nf3? (better is 23...Qe7 24.Be5 Qe5+/–) 24.Kg2+– Nd4 25.Bd4?? (better is 25.Qd3 Ne6 26.Qd8 Rfd8 27.Rd8 Rd8 28.a3+–) 25...Qd4+= 26.Nc3 Bf6 27.Rac1 Rfe8? (better is 27...Rfd8+=) 28.Rf1?? (better is 28.Nb5 Qe4 29.Kg1+–) 28...d2–+ 29.Rc2 Re1 30.Nd1 Rf1 31.Kf1+= Re8 32.Rc4? Re1–/+ 33.Kg2 Qd5 34.Kh3?? Qh5 35.Kg2 0–1. Vasilev,Sergey – Mihajlova,Diana, First Saturday FM–B May, 2012.

5.d5 Bf5 6.Nd4 Bg6 7.e3 Nf6 8.Nc3 b6 9.Bb5 Nbd7 10.Bc6 Rb8 11.0–0 Be7 12.f3 ef3+/– 13.Qf3 0–0 14.b5 Ne5 15.Qe2 Bh5 16.Qf2 Nfg4= 17.Qg3?? Bg5?? 18.Bc1 Nc6?? 19.Nc6+– Ne5?? 20.Nd8 Rc8 21.Qg5 Bg6 22.Nc6 Nc6 23.dc6 Rce8 24.Nd5 Re5 25.Ne7 Kh8 26.Ng6 fg6 27.Rf8 1–0. tromar (1800) – Hally, GameColony.com, 2002.

4.e3

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.Nf3).

4.e3 Nd7 5.c4 Ngf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 Nbd7).

4.e4

4.e4 (--> 3.e4 Be6 4.Nf3).

4.e4 Nf6 5.d3 (--> 3.e4 Be6 4.Nf3 Nf6 5.d3).

3.Nf3 f5

4.a3 Nf6 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.a3 Nf6 5.Nf3).

4.Nc3 Nf6 5.e3 Be6 6.Ng5 Bg8 7.Be2 Nbd7 8.d4 e4 9.0–0 d5 10.a3 c6 11.Na4 b6 12.Rc1 Bd6 13.g3 Qe7 14.Qd2 Ng4 15.Nh3 Be6 16.c4 (16.Nf4 Bf4 17.ef4 0–0+=) 16...0–0 (better is 16...dc4!? 17.Nc3 Ngf6–/+) 17.c5= bc5 18.Nc5 Nc5 19.dc5 Be5 20.Bd4 g5 21.f3 ef3 22.Bf3 Bd7 23.Qc3 (23.b5!?+=) 23...Bd4= 24.ed4 Ne3 25.Rfe1 f4 26.gf4 gf4 27.Nf2 Qh4 28.Re2 Rf6 (28...Kh8 29.Kh1 Rg8 30.Re3 fe3 31.Qe3–+) 29.Kh1 Nf5 30.Nh3? (30.Rb2 Re8 31.Qd3 Rg6–+) 30...Rg6 (30...Kh8!? 31.Bg2 f3 32.Bf3 Qh3 33.Bg2 Qc3 34.Rc3 Nd4 35.Re7–+) 31.Rg2 (31.Rg1 Ng3! 32.hg3 fg3–+) 31...Re8 (31...Rg2!? 32.Bg2 Ne3 33.Rg1–+) 32.Rg6–/+ hg6 33.Ng1 Re3 34.Qb2 Ng3 35.Kg2–/+ Ne4 36.Be4 de4 37.Qa2 Kg7 38.Kh1 f3 39.Rf1 Bh3 40.Rf2 Re1 41.a4 Qg4 (41...Qg4 42.Qf7 Kf7 43.Rf3 Qf3) 0–1. Romsdal,Svein Erik – Paulsen,Viktor (1745), Alta ASKO Hostturnering, 2004.

4.c4 Nf6 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3).

4.d3 Be7 5.g3 (5.e3 Nf6=) 5...Nf6 6.Bg2 0–0 7.Nbd2 Qe8 8.c4 Nbd7 9.a4 Bd8 10.Qb3 Kh8 (10...a5 11.c5 d5 12.0–0=) 11.0–0 f4 12.Rac1 fg3 13.fg3 Ng4 14.e4 Ne3 15.Rf2 Ng2 16.Kg2 Nf6 17.Re1 Qh5 18.d4 Bh3 19.Kg1 Ng4 20.Rfe2 Bg5 21.Ng5 Qg5 22.Qd3 Rf7 23.Rf1? (better is 23.c5–/+) 23...Bf1–+ 24.Nf1 Raf8 25.Re1 Qh5 26.Qe2 (26.h4 Nf2 27.Qe2 Nh3 28.Kh1 Qe2 29.Re2 Rf1 30.Kg2 R1f2 31.Rf2 Rf2 32.Kh3 Rb2 33.de5 Rb4 34.ed6 cd6 35.Kg4–+) 26...Rf2 27.Qd1 (27.h4 Re2 28.Re2–+) 27…Rf1! (27...Rf1 28.Rf1 Qh2) 0–1. Manzanilla,Rufino – Vigile,Matteo, ITA Inps op Italy, 1998. (=1.Nf3 d6 2.b4 e5 3.Bb2 f5)

4.d4 e4=+ 5.Nfd2 d5 6.e3 Nf6 7.a3=+ Be6 8.Nc3 a6 9.Be2 Bd6 10.0–0 0–0 11.h3 Qd7 12.f4 ef3 13.Bf3 Ne4 14.Nce4 fe4 15.Bg4 Nc6 16.Be6=+ Qe6 17.Rf8 Rf8 18.Qg4 Qg4–+ 19.hg4 Bg3 20.c4 Rf2?? 21.Rd1 dc4 22.Bc1=+ b5?? 23.Ne4+– (23.Ne4 Ra2 24.Ng3+–) 1–0. guest1374 – guest229, ICS blitz, 2000.

4.e4 Nf6 5.ef5 Bf5 6.Be2 Be7 7.0–0 0–0 8.c4 Nc6 9.a3 Ne4 10.d4 ed4 11.Nd4 Nd4 12.Bd4 Bf6 13.Bf6 Qf6=+ 14.Nd2?? Nc3–+ 15.Qe1 Rae8 0–1. pumpkin (2255) – clochard (2245), net–chess.com, 2003.

4.g3 Nf6 5.Bg2 Be7 6.0–0 f4 7.Nc3 fg3=+ 8.fg3 0–0 9.Ng5 Nh5?? 10.Bd5+– Kh8 11.Nf7 Rf7 12.Bf7 Bh3? 13.Bh5+– Bf1 14.Qf1 Nd7 15.Nd5 Bf6 16.Nf6 Nf6 17.Bf3 c6 18.e4 Qb6 19.Kg2 Qb4 20.Bc3 Qb6 21.Rb1 Qc7 22.d4 Qe7 23.a3 Rf8 24.de5 Ne4 25.ed6 Qd6 26.Rd1 Qb8?! 27.Bb2 Ng5 28.Rd3 Qc8 29.Kh1 Qf5 30.Qe2?? Nf3–/+ 31.Kg2 Ng5 32.h4 Qe4 33.Qe4= Ne4 34.Rd7 Rf2 35.Kh3 Nf6 36.Rd8 Ng8= 37.Rb8 b6 38.Rb7 Nf6 39.Ra7 Rc2=+ 40.Bf6 gf6 41.Kg4 Rc5 42.h5 Ra5 43.Ra5?? ba5–+ 44.Kf4?? Kg7 45.Ke4 Kh6 46.g4 Kg5 47.Kd4 Kg4 48.Kc5 f5 49.Kc6 f4 50.Kb5 f3 51.Ka5 f2 52.a4 f1Q 53.Kb6 Kh5 54.a5 Qb1 55.Ka7 0–1. pinecrest1981 – snake37, Caissa's Web Live Game, 2004.

4.d3 Nf6

5.Nbd2 Be7 6.g3 0–0 7.Bg2 a5 8.b5 c6 9.a4 cb5. ManchesterChess – bridlingtonbrummie, ChessWorld.net, 2009.

5.g3 Be7 6.Bg2 c6 7.0–0 0–0 8.c4 Kh8 9.Qc2 Qb6 10.c5 dc5 11.Ne5 cb4 12.Qc4 Qc5 13.Qh4 (13.Nf7!? Kg8 14.Nh6 Kh8 15.Nf7 Kg8 16.Nh6 Kh8 17.Nf7=) 13...Kg8+= 14.a3 (better is 14.Rc1!? Qd6 15.Qd4–/+) 14...Ng4–+ 15.d4 Qc2?? (better is 15...Qe5! 16.Qg4 fg4 17.de5 ba3 18.Na3 Be6–+) 16.Qe7= Qb2 17.Qb4 Qb4 (17...Qe2?? 18.Qb3 Kh8 19.Ra2 Qf1 20.Bf1 Ne5 21.de5+–) 18.ab4 Ne5 19.de5 Nd7 (19...Rd8 20.Nc3=) 20.f4+= Nb6 21.Rd1 Be6 22.Nc3 a6 23.Rd4 Nc4 24.Kf2 Kf7 25.e4 g6 26.ef5 gf5 27.Na4 Rad8 28.Rad1 Rd4 29.Rd4 Na3 30.Nc5 Bc8? (better is 30...Nb5 31.Rd2 Rb8+–) 31.Nb7! Nc2 (31...Bb7 32.Rd7 Double attack (32.Rd7 Decoy)) 32.Nd6 Ke6 33.Rc4 (33.Rc4 Na3 34.Rc6+–) 1–0. Lopatina,Olga (2125) – Czech,Daiva (2115), BL2 Gr01, 2008. (=1.Nf3 d6 2.b4 e5 3.Bb2 f5)

4.e3

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.Nf3).

4.e3 Be6 5.c4 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be6).

4.e3 Nf6 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3).

4.e3 Nf6 5.c4 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7).

4.e3 Nf6 5.Bc4 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.Bc4 Nf6 5.Nf3).

4.e3 Nf6 5.Be2 Be7 6.0–0 0–0 7.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7 6.Be2 0–0 7.0–0).

4.e3 Nf6 5.Be2 Be7 6.0–0 c6 7.c4 0–0 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7 6.Be2 0–0 7.0–0 c6).

4.e4 fe4

5.Ne5 de5 6.Qh5 Kd7 7.Qf5 Ke8 8.Qh5 Kd7 9.Qf5 Ke8 10.Qh5= ˝–˝. otto – marsa, internet, 2011.

5.Ne5 de5 6.Qh5 Kd7 7.Qg4 Ke7 8.Qg5 Nf6 9.Bc4 –+.

5.Ne5 de5 6.Qh5 Ke7 7.Qe5 Be6–/+ 8.Qe4 Nf6 9.Bf6 gf6 10.Bc4 Qd7 11.Nc3 Kf7 12.0–0 Nc6 13.b5 Ne5 14.Be6= Qe6 15.d4 Nc4 16.Qb7 Bd6 17.Rfe1 Qd7?? 18.Qd5+– Kf8 19.Qa8 (< 19.Qc4 Kg7+–). pierre – Francizco, ChessHere.com, 2006.

5.Ng1 Nf6 6.f3 ef3 7.Nf3 Bg4 8.Be2 Bf3 9.Bf3=+ Be7?? 10.Bb7+/– Nbd7 11.Ba8 Qa8 12.0–0 Ne4 13.Nc3 Nc3 14.Bc3 h5 15.b5 h4 16.a4 h3 17.Rf2 hg2 18.Rg2 g5 19.Qg4 Rh4 20.Qe6 Qf3? 21.Qg8 Nf8 22.Rf1 Qh3 23.Qd5 g4? 24.Qc6 Nd7 25.Qa8 Bd8 26.Qe4 g3 27.Qg6 Ke7 28.Qf7# 1–0. Nautiluschess – StefanU, internet, 2001.

4.e4 f4

5.Bc4 Nc6 +=.

5.Bc4 g5?? 6.Ne5!+– de5 7.Qh5 Kd7 8.Be5 Qe7 9.Bh8 Qe4 10.Be2 h6 11.Qf7 Be7 12.Kf1 Nc6 13.Bg4 Kd6 14.Nc3 Qc2 15.Qd5# 1–0. orane (2155) – maxangst (2050), Live Game Caissa's Web, 2004.

5.d4+= Nd7 6.Bc4 Ngf6 7.Nc3 b6? 8.0–0 Bb7 9.Re1 Qe7 10.Nb5 0–0–0 11.d5 a6 12.Na7 Kb8 13.Nc6 Bc6 14.dc6 b5 15.Bb3 Nb6 16.a4 d5 17.ed5+– Nfd5 18.ab5 ab5 19.Ne5 Qb4 20.Nf7 (20.Nf7 Bc5 21.Nh8 Rh8 22.Bg7+–) 1–0. mrkt – guest625, ICC, 2005.

3.Nf3 f6

4.e3 a6 5.c4 Nc6 6.a3 Qe7 7.Nc3 g5 8.Nd5 Qg7 9.Qa4 Kd8 10.h3 Bd7 11.Bd3 b5? (better is 11...Nge7=) 12.cb5+– ab5?? (12...Nge7+–) 13.Qa8 Bc8 14.Qc6 Qd7 15.Qa8 (15.Bb5 Qc6 16.Bc6 Ne7 17.Ne7 Be7+–) 15...Ne7 (15...c6 16.Rc1 Qb7 17.Qa5 Ke8 18.Rc6+–) 16.Nf6 Qe6 17.Nh7 Kd7 18.Nfg5 Qb3 19.Nf6 Kd8 20.Bc2 Qc2 21.Nf7 (21.Ne6) 1–0. Fournier,Frederic (2100) – TheBarber2 (1695), chessworld.net, 2008.

4.e3 b6 5.d4 Nc6 6.b5+= Nce7 7.a4 a6 8.c4 a5 9.Nbd2 Nf5 10.d5 c5? 11.dc6+– d5 12.cd5 Qd5 13.Bc4 Qd7?? 14.cd7 Bd7 15.Ne4 Rc8 16.Qb3 Nge7 17.Bf7 Kd8 18.Rd1 Nd6 19.Nd6 Rc7 20.Ne8 Rb7 21.Qe6 Kc8 22.Qc4 Kb8 23.Ne5 fe5 24.Be5 Ka7 25.Nd6 Ng6 26.Nb7 Bb4 27.Ke2 Bg4 28.f3 Ne5 29.Qc7 Rc8 30.Qe5 Bc3 31.Qe7 Bf6 32.Qe4 Rc7 33.Na5! Bc8 34.Nc6 Ka8 35.a5 ba5 36.Na5 Ka7 37.Nc6 Kb6 38.Qa4 Bc3 39.Be8 Rc6 40.Bc6 Be6 41.Ra1! Kc5 42.Kd3 Ba1 43.Ra1 Bf5 44.e4 Be6 45.Qd4 1–0. boa – tonycally, ChessWorld.net, 2004.

4.e3 d5 5.a3= a5 6.b5 Be6 7.d4 e4 =.

4.e3 e4 5.Nd4 h5 6.Be2+= Bg4? 7.Bg4+– hg4 8.Qg4 Qd7?? 9.Qe4 Ne7 10.Qb7 Nbc6 11.Qa8 Kf7 12.Nc6 Nc6 13.Bc3 Nd8 14.Qa7 Rh5 15.a4 Be7 16.b5 d5 17.f4 f5 18.Be5 Bd6 19.a5 Be5 20.fe5 Rg5 21.a6 Rg2 22.Qc5 f4 23.a7 Qg4 24.Qd5 Ne6 25.Qd7 Kg6 26.Qd3 Kh5 27.Qh7 Kg5 28.h4 Qh4 29.Rh4 Rg1 30.Kf2 Rg4 31.Qh5# 1–0. MrkT – DconMan, internet, 2005.

4.e3 Qe7 5.c4 Nd7 6.Nc3+= c6 7.a3 a6 8.Be2 g6 9.0–0 h5 10.d4 Qh7 11.de5 fe5 12.Ne4+– Nb6? 13.Nd6 Bd6 14.Qd6 Qe7 (14...Ne7 15.Ne5 0–0 16.e4+–) ˝–˝. Engel – Philipp, corr, 1984.

4.e3 Ne7 5.c4 g6 6.d4 Bg7 7.de5 (7.Bd3 ed4 8.ed4 a5+=) 7...de5 8.Qd8 Kd8 9.Be2 Nd7 (9...Be6!?=) 10.Nc3+/– c6 11.Rd1 Ke8 12.0–0 Kf7 13.c5 b6 14.cb6 (14.Ne4 Nd5 15.Bc4 Ke7+/–) 14...ab6 15.Bc4 Nd5?? (better is 15...Ke8+/–) 16.Nd5+– cd5 (16...Rb8 17.Nb6 Ke7 18.Na4+–) 17.Bd5 (17.Bd5 Ke7 18.Ba8+–) 1–0. Fournier,Frederic (1980) – NN, jeu.europe–echecs.com, 2013. (=1.Nf3 d6 2.b4 f6 3.Bb2 e5)

4.e3 Bg4 5.Be2 Bf3 (5...a6!?+/–) 6.Bf3+– (6.gf3?! d5 7.Rg1 Nh6+/–) 6...Be7? (6...d5 7.c4 e4 8.Bh5 g6 9.Be2+–) 7.0–0 (better is 7.Bb7!? Nd7 8.Ba8 Qa8+–) 7...d5 (7...c6 8.Nc3+–) 8.Nc3 (8.c4!? e4 9.Bh5 g6+–) 8...c6 9.a3 g6 (9...f5 10.Na4 Nd7 11.c4+/–) 10.Qe2 (10.e4!? d4 11.Ne2 Nh6+–) 10...Nd7+/– 11.Na4 (11.e4 d4 12.Na2 Nh6+/–) 11...b5 12.Nc3 f5 13.d3 (13.a4 e4 14.Ne4 fe4 15.Bh8 ef3 16.Qf3 Ngf6+/–) 13...h5? (13...Ngf6 14.a4 a6 15.ab5 ab5 16.Ra8 Qa8 17.e4 fe4 18.de4=) 14.Rfd1 (14.a4 a6+/–) 14...Ngf6 15.e4 (15.a4 Bb4 16.e4 ba4 17.ed5 Bc3 18.Bc3 cd5 19.Be5 Kf7+=) 15...fe4+= 16.de4 Qb6?? (better is 16...d4 17.Na2 g5+=) 17.ed5+– cd5 18.Nd5 Nd5 19.Bd5 0–0–0 20.c4 bc4 21.Qc4 Kb8 22.Be6 Bd6 23.Bd7 Rd7 24.Be5?? Be5= 25.Rac1?? Rd1 26.Rd1 Rf8 27.Qe2 Re8 28.Qf3 Rd8 29.Rd8 Qd8 30.g3 Bb2 31.Qf4 Qc7 32.Qf8 Qc8 33.Qd6 Qc7 34.Qc7?? Kc7–+ 35.a4 Bc3 36.b5 Bd4 37.Kf1 Kd6 38.Ke2 Kc5 39.f4 Kb4 40.Kd3 Bg1 41.h3 Ka4 42.Kc4 Bf2 43.g4 hg4 44.hg4 Bg3 45.f5 gf5 46.gf5 Be5 47.Kc5= Ka5 48.Kc6 Bd4 49.b6?? ab6–+ 50.Kd5 Bf6 51.Kc4 b5 52.Kb3 b4 53.Ka2 Ka4 54.Kb1 Ka3 55.Kc2 b3 56.Kb1 b2 (56...b2 57.Kc2 Ka2 58.Kd2 b1Q 59.Ke2 Qf5 60.Ke3 Kb3 61.Ke2 Bd4 62.Kd2 Qf2 63.Kd1 Be5 64.Kc1 Qc2#) 0–1. Neumann,Frank (1650) – Korn,Lothar (1700), remoteschach.de, 2009.

3.Nf3 Nf6

4.a3 Be7 5.Nc3 Be6 6.d4 ed4 7.Nd4 0–0 8.Ne6 fe6 9.Qd3 Nc6 10.Ne4 Ne4 11.Qe4 Qd7 12.b5 Ne5 13.Be5 de5 14.e3 Rad8 15.Bd3 g6 16.h4 a6 17.ba6 ba6 18.h5 Rf6? 19.hg6+– hg6 20.Qh4 Rf2 21.Qh8 Kf7 22.Rh7 1–0. kamret (2180) – p4rp3bd, GameColony.com, 2003.

4.b5 (--> 3.b5 Nf6 4.Nf3).

4.Nc3 Be7 5.a3 0–0 6.e4 b6 7.Bc4 Bb7 8.0–0 Ne4=+ 9.Ne4 Be4 10.d3 Bb7 11.Re1 Re8 12.d4 e4 13.Nd2 d5 14.Ba2 c5 15.dc5=+ bc5 16.bc5 Bc5–/+ 17.Nb3 Bf8 18.c4 Na6 19.cd5 Bd5 20.Nd4 Ba2 21.Ra2 Nc5 22.Qg4? Qf6?? 23.Nc2–/+ Qg6 24.Qg6 hg6 25.Bc3 Nd3–+ 26.Rd1 Rac8 27.Bb4 Bb4 28.Nb4 Rc4 29.h3 Nb4 30.ab4 e3 31.fe3+= Re3 32.Ra7 Re2 33.Rdd7 Rf4 34.b5 Rff2 35.g4 ˝–˝. Lindberg,Rune – Lindberg,Sture, MCO, 1996.

4.d3 a6 5.e4 Be7 6.Nc3 Be6 7.a3 0–0 8.Be2 h6 9.Qd2 Re8 10.h3 Nbd7 11.0–0 Nf8 12.Rfe1 Ng6= 13.Bf1 c6 14.Ne2 Qc7 15.c4 b5 16.Ng3= Nf4 17.Nf5 Bf8 18.cb5 cb5 19.Rac1 Qd8 20.g3 Ng6= 21.N5h4 Nh4 22.Nh4 Be7 23.Nf5 Qd7 24.Ne7 Qe7 25.f3 Red8 26.g4 Bc8 27.g5 hg5 28.Qg5 Bb7 29.h4 Re8 30.h5 Nd7? 31.f4 Qg5 32.fg5 d5? 33.Rc7+– Bc8 34.ed5 Nb6 35.d6 Bg4 36.h6 gh6 37.gh6 f6 38.Rg7 Kh8 39.Rg4 Nd5 40.Bg2 Nb6 41.Ba8 Ra8 42.Rg7 Rg8 43.Rg8 Kg8 44.Be5! fe5 45.Re5 Nd7 46.Re7 Nf6 47.Kf2 Nd5 48.Ra7 Nf4 (48...Nf4 49.d4 Ne6 50.Ra8 Kh7+–). alexson – ashleysworld, ChessWorld.net, 2009.

4.d3 c6 5.Nbd2 Be7 6.e3 0–0 (6...a5 7.c3+=) 7.Be2 a5 8.ba5 (8.a3 Ne8=) 8...Qa5 9.0–0 (9.c4 Be6=) 9...Nbd7 (9...Bg4 10.h3 Bf3 11.Nf3+=) 10.c4 Qc7 11.Qc2 Nc5 12.a4 Bf5 13.Nh4 Be6 14.d4 Ncd7 (14...ed4 15.ed4 Na6 16.Bc3=) 15.Nf5 Rfe8 (15...Bf5!? 16.Qf5 h6=) 16.Ne7+= Re7 White has the pair of bishops 17.Rfd1 ed4 18.Bd4 Ne5 19.Qb2 (19.h3 c5 20.Bb2 Ne8=) 19...Bg4 20.Bg4 Nfg4 21.Be5 Ne5 22.Qc3 Re6 23.Qd4 Rg6 24.Kh1 (24.f4 c5 25.Qc3 Nc6+=) 24...d5 (24...Qe7 25.h3+=) 25.h3= Covers g4 (25.cd5? is a blank shot 25...Ng4 26.f4 Nf2 27.Kg1 Nd1 28.Rd1 Rd8–+) 25...Rd8 (25...Qe7 26.cd5 Qg5 27.g3=) 26.c5 Black has a new backward pawn: b7 (26.f4!? is an interesting idea 26...Nd7 27.cd5 cd5 28.Nf3=) 26...Qe7 27.Ne4 Rd7 (27...Nd7 28.Rab1 Rb8 29.Rbc1=) 28.Nd6 Qg5 Black has a mate threat 29.Rg1 Ng4 (29...Rh6!? is worth consideration 30.Rgb1 Rg6=) 30.Qg4 0–1. Sann,Michael (2060) – Kraenzle,Harald (2125), Regionalliga SW, 2002. (=1.Nf3 Nf6 2.b4 d6 3.Bb2 e5)

4.d3 Be6 5.e4 (--> 1.b4 e5 2.Bb2 d6 3.e4 Be6 4.Nf3 Nf6 5.d3).

4.e4 Ne4 5.Qe2 Nf6 6.Ng5 Be7 7.Qc4 0–0 8.Qh4 h6 9.d4?? hg5 10.Qg3 Nh5 11.Qb3 e4 12.Be2 Nf4 13.0–0 Ne2 14.Kh1 Nc6 15.Qe3 Nf4 16.Qe4 Nb4 17.Nd2 Bd7 18.Qb7 Nc2 19.Rac1 Rb8 20.Qe4 Nb4 21.d5 Nbd5 22.Rb1 Bc6 23.Qd4 Bf6 24.Qa7 Bb2 25.a4 Bc3 26.Ne4 Be5 27.a5 Nb4 28.f3 g4 29.Qe3 Ng2! 30.Kg2 gf3 31.Rf3 Qh4 32.Rh3 Be4 33.Kg1 Qh3! 34.Qh3 Bb1 (35.Qh4 c5–+) 0–1. Ralf – jpv, playchess.de, 2003.

4.g3 Be6 5.Bg2 Be7 6.0–0 0–0 7.Nc3 a6 8.Ng5 Nc6 9.a3 Bd7 10.Nd5?? (10.Nge4 Ne4 11.Be4 Bh3=) 10...h6?? (better is 10...Nd5 11.Nf7 Kf7 12.Bd5 Kg6 13.Be4 Kh6–+) 11.Nf6= Bf6 12.Ne4 Be7 13.Nc3 Be6 14.Nd5 Re8 15.c4 Qd7 16.Re1 Rac8 17.Bc3 Bh3 18.Bh1 Nd8 19.Rc1 c6 (better is 19...b6!?+=) 20.Nb6+– Qc7 21.Nc8 Qc8 22.d4 ed4 23.Bd4 Ne6 24.Ba1 f5 25.e3 g5?? (better is 25...Bg4 26.f3 Bh5+–) 26.Qh5 Kh7 1–0. Macedo,A Soares De (1875) – Do Nascimento,I Oliveira, 11th IRT Academia Potiguar de Xadrez, 2015.

4.g3 Be7 5.d3 Nd5 6.Nc3 Nb4–/+ 7.a3 N4c6 8.Bg2 d5 9.d4 ed4 10.Nd4=+ Bf6 11.Nd5+= 0–0? 12.0–0?? Bd4–+ 13.Bd4 Qg5?? 14.Be3?? Qh5?? 15.Nc7+– Bg4 16.Na8 Be2 17.Qd5 Bf1 18.Qh5 (18.Qh5 Bg2 19.Kg2+–) 1–0. pier_e – maxpayne1st, internet, 2009.

4.g4 Bg4 5.Ng5 Be7 6.h3 Bh5 7.b5 0–0 8.h4 Nd5 9.Bg2 Bg5?? 10.hg5 Be2?? 11.Qe2+– Qg5? 12.Bf3 Nf4 13.Qf1?? Nd7 14.d3 c6 15.bc6+/– bc6 16.Bc6 Rab8 17.Bd7 Rb2= 18.Nd2 Rc2 19.Ne4 Ng2?? 20.Kd1+– Qg4 21.Kc2 Qd7 22.Qg2 Rc8 23.Kd2 Qf5 24.a4 Qf4 25.Ke1 d5 26.Ra2 de4= 27.de4?? Rc1?? 28.Ke2+– Rh1 29.Qh1 Qg4 30.Ke3 Qf4 31.Kd3 Qf6 32.Re2 Qa6 33.Ke3 Qa4 34.Qc1 Qd4 35.Kf3 Qd3 36.Kg2 g6 37.Re3 Qd7 38.f3 Kg7 39.Kg3 h5 40.Qc3 Qe7 41.f4 h4 42.Kg4+– f6 43.fe5 fe5 44.Qa5?? Kh6 45.Rf3?? Qg5= 46.Kh3 Kh5?? 47.Qc3 Qg4+= 48.Kh2 Qe4 49.Qe3 Qc2 50.Rf2+– Qc7 51.Qe2 Kh6 52.Qg4 e4? 53.Kh3+– Qc3 54.Kh4 e3?? 55.Rg2 Qf6 56.Kh3 Qf5 57.Qf5 gf5 58.Kg3 Kg6 59.Re2 Kg5 60.Kf3 f4 61.Ra2 Kf5 62.Ra7 Ke5 63.Ra4 1–0. soraya – bar (1900), net–chess.com, 2007.

4.h3 b6 5.e3= Bb7 (5...e4 6.Nd4+=) 6.c4 (6.Be2 Be7=) 6...Nbd7 (6...e4 7.Nd4=) 7.d3 (7.d4 ed4 8.Bd4 c5=) 7...g6 (7...d5 8.a3 dc4 9.Ne5 Ne5 10.Be5=) 8.Nbd2 Bg7 9.Qb3 (9.Be2 a5 10.b5 0–0=) 9...a5 10.b5 a4 (10...0–0 11.Be2=) 11.Qb4 0–0 (11...Nc5 12.Be2=) 12.e4 (12.Be2 Nc5=) 12...Nc5 (12...Nh5 13.0–0–0+=) 13.0–0–0 (13.Qa3 Nh5+=) 13...c6 14.Be2 cb5 Black is in command 15.Qb5 Rc8 16.Kb1 Bc6 17.Qb4 Rb8 (17...Na6 18.Qa3–/+) 18.g4 (18.Rhe1 Qe7–/+) 18...b5 19.cb5 (19.Ne5 Be8 20.Nef3 bc4 21.Qc3–+) 19...Bb5–+ 20.Qa3 Qb6 21.Ne1 (21.g5 Nfe4! 22.Ne4 Ne4 23.de4 Be2 24.Rd6 Qb7–+) 21...d5 (21...Ne6 22.Bf3–+) 22.ed5 Nd5 23.Nc4 Bc4 24.dc4 Nf4 25.Nd3 (25.Rd2 e4 26.Kc1 Bb2 27.Qb2–+) 25...Nfd3 (25...Ne2?! 26.Nc5 e4 27.Rd2–+) 26.Bd3 e4 27.Kc2 ed3 28.Rd3 Qb2 29.Qb2 Rb2 30.Kc1 Nd3 31.Kd1 Nf2 32.Ke1 Nh1 33.Kf1 Rc8 34.Kg1 Rc4 35.Kh1 Rc1# 0–1. Inskip,N (1880) – Downey,K, NCE v Carmarthen 'A', 2002.

4.h3 e4 5.Nd4 +=.

4.h3 Be7 5.e3 h6 6.Bc4 0–0 7.d4 e4 8.Nh2 d5 9.Bb3 c6 10.a3 Bd6 11.Ng4 Ng4 12.hg4 Qg5 13.Rh5 Qe7 14.f3 Bg3 15.Kd2 Nd7 16.f4 b6?? 17.Qh1 c5 18.dc5 bc5 19.bc5 Nc5 20.Bd5 Qd6 21.Ke2?? Nb3 22.cb3+/– Ba6? 23.Bc4?? Rac8 24.Nd2?? Bc4 25.Nc4?? Qd3 0–1. PoPer – russianlove, Live Game Caissa's Web, 2004.

4.h3 Bf5 5.Nc3 Nbd7 6.Nh4 Be6–/+ 7.d3 Be7 8.e4 Ne4! 9.de4 Bh4 10.Be2 0–0 11.Bg4 Qf6 12.0–0 Nb6 13.Be6 fe6 14.Qg4 Bf2–+ 15.Rf2? Qf2 16.Kh1 Qc2 17.Rb1 Nc4 18.Qe6–/+ Kh8 19.Qc4 Rf2 20.Rg1?? Qb2–+ 21.Nd1 Rc2 22.Nb2+– Rc4 23.Nc4 Rf8 24.Na5 b6 25.Nc6 a6 26.a4 Rf4 27.Re1 Kg8 28.g3 Rf3 29.b5 ab5 30.ab5 Rg3 31.Ne7 Kf7 32.Kh2 Rb3+= 33.Nd5 Rb2 34.Kg3 Rc2 35.Rf1 Ke6 36.Ne3 Rc5 37.h4?? Rb5=+ 38.h5 Rb3 39.Rf3 b5 40.Kg4 Ra3 41.Nf5 g6?? 42.Ra3 gf5 43.ef5 Kf6 44.Ra7 c5 45.Rh7 c4 46.Rb7 d5 47.Rb5 d4 48.Rb6 Ke7 49.f6 Kd7 50.f7 c3 51.f8Q (51...c2 52.Rd6 Kc7 53.Qe7 Kb8 54.Rd8) 1–0. pinecrest1981 – touchandgo, Live Game Caissa's Web, 2004.

4.Nc3 Bg4

5.e4 Be7 6.Bc4 0–0 7.Be2 Nc6 8.b5 Nd4 9.Nd4 ed4 10.Bg4 Ng4 11.Qg4+/– dc3 12.Bc3 Bf6 13.Bf6 Qf6 14.0–0 a6 15.Qd7+/– Rfc8 16.ba6 ba6. pierred (2100) – MonsterMorphy (1855), ICC, 2006.

5.h3 Bh5 6.g4 Bg6 7.Bg2 c6 8.Nh4 Nbd7 9.b5 d5 10.0–0 Bd6 11.d3 Qb6 12.a4 a5 13.e3 0–0 14.g5 Nh5 15.Bf3+/– d4 16.Ne4 (16.Ne4 Be4 17.de4+/–; 16.Bh5?! Bh5 17.Qh5 dc3 18.Bc3 cb5=+) 1–0. gtate (2520) – agostinhoarruda (2305), net–chess.com, 2007.

4.c4

4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.Nf3).

4.c4 Be7 5.e3 0–0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0–0).

4.c4 g6 5.e3 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5).

4.c4 g6 5.e3 Bg7 6.d3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d3 e5).

4.d3 Be7

5.c4 Nbd7 6.Nbd2 h6 7.e4 0–0 8.Be2 b6 9.0–0 Bb7 10.a4 a6 11.a5 b5 12.cb5 ab5 13.d4 c6 14.de5 de5 15.Ne5 Ne5–/+ 16.Be5 Bb4 17.Nb3 Ne4 18.f3 Nc3 19.Qe1 Ne2 20.Qe2 Re8 21.f4 Bc3 22.Rad1 Qc8 23.Rd3 Be5 24.fe5 Qc7 25.Re3 Re6 26.Nc5= Re7 27.e6+= fe6 28.Re6 Rae8 29.Re7 Re7 30.Qf2 Rf7?? 31.Qa2 Qe7?? 32.Rf7 Qf7 33.Qf7 Kf7 34.Nb7 Ke6 35.a6 b4 36.a7 b3 37.a8Q b2 38.Qa2 Kd7 39.Qb2 Kc7 40.Nc5 g6 41.Kf2 Kd6 42.Qc2 Kd5 43.Ke3 g5 44.Nd3 Kd6 45.Qc5 Kc7 46.Ke4 h5 47.Ke5 Kd7 48.Nb4 g4 49.Qc6 Ke7 (50.Qe6 Kf8 51.Kf6 h4 52.Qf7). var – book2, Live Game Caissa's Web, 2004.

5.Nbd2 a6 6.g3 Nc6 7.a3 h6 8.Bg2 Be6 9.0–0 Rb8 10.Rc1 Qd7 11.c4 b6 12.Qc2 Bd8 (12...0–0 13.b5 Na7 14.ba6+=) 13.b5+/– ab5 14.cb5 Ne7 15.a4 0–0 16.Nc4 (16.d4 ed4 17.Bd4 Nfd5+/–) 16...Bh3 17.d4 (17.e4!?+=) 17...e4= 18.Ne1 Bg2 19.Ng2 Ned5 20.e3 Qe6 21.Qe2 Ng4 (21...Ra8 22.Qc2+=) 22.h3 (22.f3!? Ngf6 23.fe4 Ne4 24.Nf4 Nf4 25.ef4=) 22...Ngf6+= 23.Kh2 Nb4 (23...Ra8 24.Qd1+=) 24.Nf4= Qe7 25.Ba3 Nbd5 26.Nd5 Nd5 27.Ne5 Qe6 28.Nc6 Ra8 29.Qc2 f5 30.Qc4 Rf6 31.Nd8 (31.Bb2!?=) 31...Rd8+= 32.Qc6 g5 33.Bb2 h5 34.Qc4 h4 35.gh4 g4 36.Rg1 Kh7 37.Qe2 gh3?? 38.Qh5 Rh6 39.Qg5 Rg8 40.Qg8+/– Qg8 41.Rg8 Kg8 42.Kh3 Rg6 43.h5 Rg4 44.Rf1 Kh7 45.Bc1 Nf6 46.f3 ef3 1–0. Miquel Badenes,Jose (1830) – Gomez Calvachi,Luis, Valencia region tt, 2004.

5.e4 a5 6.b5 c6 7.a4 Bd7 8.c4 (8.Nc3 0–0 9.Be2 Be6 10.d4 Nbd7 11.0–0 Qc7) 8...Qb6 (8...0–0 9.Nc3 Qb6 10.Qc2 Be6 11.Be2 Nbd7) 9.Nc3 (9.Nbd2 0–0 10.d4 Rd8 11.Bd3 Be6) 9...Na6 10.Rb1 (10.d4 ed4 11.Qd4 Qd4) 10...Nc5 (10...Nb4 11.Bc1= (11.bc6 bc6) 11...0–0) 11.Be2 0–0 12.0–0 Be6 13.Qc2 Nfd7 14.d4 ed4 15.Nd4 cb5 (15...Bf6 16.Rfd1=) 16.Ncb5+= Ne5 17.h3 (17.Nf5 Bf5 18.ef5 Rfd8+/–) 17...Rac8 (17...Nc6 18.Nf5 Bf5 19.ef5+=) 18.Kh1 (18.Nf5!? Bf5 19.ef5+/–) 18...Nc6 19.Nc6 Rc6 (19...Qc6 20.f3+=) 20.f4 (20.Nd4 Re8 21.Ne6 fe6 22.Bg7+–) 20...f5? (better is 20...Bd7+= would allow Black to play on) 21.Nd4+– Rcc8?? (21...Bd7 22.Ba3 Qa7 23.Nc6 bc6 24.ef5 Bf5 25.Bc5 Qc5+– (25...Bc2?? greedy! 26.Ba7 Bb1 27.Rb1+–)) 22.Ne6 Ne6 23.Qd3 Qc6+/– 24.ef5 Nc5 25.Qg3 Bf6 26.Bf6 Rf6 27.Bf3 Qa4 28.Bb7 Rcf8? 29.Bd5+– Kh8 30.Ra1 Qc2 31.Rfe1 Qf5 32.Ra5 Rg6 33.Qc3 Qf4+= 34.Ra7 Rg3 35.Qb2?? Nd3–+ 36.Qb1 Ne1 37.Qe1–+ Re3 38.Qa1 Re5 39.Ra8 h6 0–1. Lorinczi Retek,Pedro – Vaquerizo Fernandez,Jose M, Asturias–chT, 1997.

5.e4 Nbd7 6.c4 Nf8 7.Be2 Ng6 8.Nc3 0–0 9.Qd2 Nf4 10.0–0 Ne2 11.Ne2 Nh5 12.h3 f5 13.ef5 Rf5 14.Ng3 (14.Qe3 Qf8=) 14...Ng3+= 15.fg3 Be6 16.Rad1 Qd7 17.Qe2 Qc6 18.Nd4 Rf1 19.Rf1 Qd7 (19...Qb6 20.Rf2 Bf7 21.Nc2+=) 20.Ne6= Qe6 21.d4 Bf6 22.d5 Qf7 23.Kh2 Qg6 24.c5 Qf7 25.Qe4 a5 26.cd6 cd6 27.b5 Qd7 28.a4 Bd8 29.Bc1 Bb6 30.Be3 Bd8 (30...Be3 31.Qe3 Qc7 32.b6+=) 31.Rc1 Rc8 32.Rc4 g6 33.g4 Kg7 34.Qc2 Rc4 35.Qc4 Kf7 36.Qc1 e4 37.Qf1 Ke8 38.Qf4 Qe7 39.Bd4 Kd7 40.b6 Kc8 41.Qc1 Kb8? 42.Qc3+– Qg5 43.Qa5 Qf4 44.g3 Qf3 45.Qa7 Kc8 46.Qa8 Kd7 47.Qb7 Ke8 48.Qc6 Kf7 49.Qc1 Bg5 1–0. Akimov,Gennadiy (2070) – Ulanov,Sergei (2215), Dimitrovgrad Petrosian Memorial op, 2008.

5.g3 b6 6.Bg2= Bb7 7.0–0 0–0 8.Nbd2 Nbd7 9.Rb1 Rb8 10.c4 c5 11.bc5 Nc5 12.Qc2 Re8 13.Rfc1 e4 14.de4 Nce4 15.Nd4 Nd2 16.Qd2 Bg2 17.Kg2 Qd7 18.Qf4+= d5 19.Nf5+/– dc4 20.Qg5 Qc6. Jacewicz,Grzegorz – Icic,M, corr 3GMM–27, 1995.

5.e4 0–0

6.c4 c6 7.Nbd2+= a5 8.a3 ab4 9.ab4 Ra1 10.Qa1 Qb6 (10...Na6!?+=) 11.Qa5= Qa5 12.ba5 c5 13.Be2 Nc6 14.Bc3 Bg4 (14...Bd8 15.Nb3+=) 15.0–0 (15.h3 Be6+=) 15...Ra8= Exerts pressure on the isolated pawn 16.Ra1 Ne8 (16...Nd4 17.Kf1=) 17.Rb1 (17.h3 Be6+=) 17...Bc8 (17...Na5 18.h3 Bc8 19.Ra1+=) 18.Nb3= Nc7 (18...Bd8 19.Ra1+=) 19.Ne1 Bd8 20.Nc2 (20.Nf3 Be7=) 20...g6 (20...Ne6 21.Ra1=) 21.f3 (21.Bd2 Ne6 22.Ra1 b6 23.ab6 Ra1 24.Nca1 Ned4 25.Nd4 Nd4=) 21...Kf8 (21...Ne6 22.Ra1=) 22.Bd2+= Na6 (22...Ne6 23.Ra1=) 23.Bc3 (23.f4 Ke7+=) 23...f5 24.ef5 gf5 25.Bd2 Rb8 (25...Rb8 26.Kf2 b5 27.cb5 Rb5+=). Kowalkowski,Zbigniew – Pilczuk,Andrzej, corr 1.AMM Poland, 1991.

6.c4 Nc6 7.b5 Nb8 8.Be2 +=.

6.c4 Nbd7 7.Nbd2 c6 8.Be2 a5 9.ba5 Qa5 10.0–0 Qc7 11.a4 Nc5 12.Bc3 Bg4 13.h3 Bf3 14.Nf3 Nfd7 (14...b6 15.Qc2+=) 15.a5= f5 16.ef5 Rf5 17.Qc2 Rf7 18.Nd2 Nf6 19.Nb3 Ne6 20.Bd2 Nd7 ˝–˝. Staffeldt,Sven (1660) – Dietel,Franz, Leipzig VfB op, 2005.

6.Be2 a5 7.b5 =.

6.Be2 b6 7.0–0= a6 8.a3 =.

6.Be2 b6 7.0–0= Bb7 8.Nbd2 (8.Nc3 Nbd7=) 8...Nbd7 9.b5 c6 (9...Nc5 10.a4=) 10.bc6 (10.a4 Qc7=) 10...Bc6 11.Bc3 (11.c4 Rc8=) 11...Qc7 12.Nc4 (12.Bb4 Rae8+=) 12...Bb5 13.Nfd2 d5 14.ed5 Nd5 15.Bb2 Bb4 (15...Bc6 16.Bg4 f5 17.Bf3+=) 16.Na3 (16.Bf3 Bc6=) 16...Ba4 (16...Bc6 17.Bf3–/+) 17.Bf3+= N7f6 (17...Bc6 18.Nb5 Qb7 19.c3+=) 18.Ndc4 (better is 18.Ne4 Rae8 19.Nf6 Nf6 20.Rb1+=) 18...Bc3 (better is 18...Rfe8–/+) 19.Bc3 (19.Bd5 Nd5 20.Bc3 Nc3+=) 19...Nc3 20.Qd2 (20.Qe1!? Nfd5 21.Bd5 (worse is 21.Ne5 Rae8–/+) 21...Nd5 22.Qe5 Qe5 23.Ne5+=) 20...Ncd5 (20...e4 21.Qc3 ef3 22.gf3+=) 21.Rfe1 (21.Qg5 Rfe8=) 21...Rfe8 22.Nb1 (22.Qg5!?=) 22...Bc6 23.Nc3 (23.Bd5!? Bd5 24.Nba3+=) 23...Nc3–/+ 24.Bc6? (better is 24.Qc3!? Bf3 25.gf3–/+) 24...Qc6–+ 25.Qc3 b5 26.Re5 Re5 27.Qe5 bc4 28.dc4 Qc4 29.Qb2 h6 30.Qb7 Qc8 31.Qb2 Rb8 32.Qc1 Qc5 33.h3 Ne4 34.c4 Qf2 35.Kh2 Rb2 36.Qg1 Qg3 37.Kh1 Nf2 38.Qf2 Rf2 39.Rg1 f5 (39...f5 40.a3 f4 41.a4 f3 42.c5 fg2 43.Rg2 Qg2#) 0–1. Rutz,Marco – Weber,Kristina, GER–ch U10 Ueberlingen, 2000.

6.Be2 b6 7.Nc3 Be6 8.Qd2 Nc6 9.b5 Nd4 10.Nd4 ed4 11.Nd1 c5 (11...a6 12.0–0+=) 12.0–0 (better is 12.bc6!? Rc8 13.Bd4 Rc6 14.c4+/–) 12...Re8 13.c3 Bd7 14.a4 Qc7 15.cd4 c4? (better is 15...a6!?+/–) 16.Bf3 (worse is 16.dc4 Ne4 17.Qd3 Bg5+/–) 16...cd3 17.Qd3 Bd8? (better is 17...Rac8+–) 18.Rc1 Qb8 0–1. Jokmin,Alex – Lebduska,Daniel, RN–2010–0–00320, 2010.

6.Be2 Bd7 7.Nbd2 a5 8.ba5 Ra5 (8...Nc6 9.d4 ed4 10.a6 ba6 11.0–0+=) 9.0–0 Nc6 10.Nb3 Ra7 11.Nfd2 Qa8 12.a3 b5 13.c4 Na5 (13...Rb8 14.cb5 Rb5 15.d4=) 14.Na5 (14.cb5 Bb5 15.f4 Nc6=) 14...Ra5 15.Qc2 c5 (15...Qc6!?=) 16.cb5+= Bb5 17.Nc4 (17.f4 ef4 18.Rf4 Rb8=) 17...Ba4 18.Qd2 Rb5 19.f4 Nd7 (19...ef4!? 20.Qf4 d5 21.ed5 Qd5+=) 20.fe5+/– Qb8 21.e6 (21.ed6 Bd6 22.h3+/– (22.Nd6? Rb2 23.Qf4 Re2–+)) 21...Ne5? (better is 21...fe6!? 22.Bg4 Rf1 23.Rf1 Nf8+=) 22.ef7+/– Rf7 (22...Nf7 23.d4+/–) 23.Rf7 Kf7 24.d4 cd4 25.Qd4 (better is 25.Rf1 Kg8 26.Bd4+/–) 25...Rb2? (better is 25...Kg8+/–) 26.Nb2+– Bc6 27.Nc4 (27.Nc4 Ke8 28.a4+–; 27.Bc4 Ke8+–) 1–0. Kwiek,Janusz – Frysiak,Adam, corr 1.AMM Poland, 1992.

6.Be2 Nbd7 7.Nbd2 a5=+ 8.b5 c6 9.a4 b6 10.0–0 Bb7 11.c4 c5 12.Nh4 g6 13.g3 Ne8= 14.Ng2 Bg5 15.f4+= ef4 16.gf4 Bh6 17.Nf3 Bg7 18.Bg7 Kg7 19.Nfh4 Nef6 20.f5 Ne8 21.Kh1 Ndf6 22.Nf4?? Nc7?? 23.Rg1 Kh8 24.Nd5?? Nfd5–+ 25.cd5 Bc8?? 26.Bg4?? Rg8?? 27.Qf3?? gf5?? 28.Bf5?? Bf5?? 29.Nf5+/– Ne8?? 30.Rg8+– Kg8 31.Rg1 Kh8?? 32.Qg4 Qf6 33.Qg8# 1–0. wood – PulveRISER15, Live Game Caissa's Web, 2005.

6.Be2 Be6 7.c4 Nbd7 8.Ng5 a5 9.a3 (9.b5 Nc5 (9...Nb6 10.Ne6 fe6 11.0–0 a4 12.Bg4 Qd7=; 9...a4 10.0–0 Nc5 11.f4 ef4 12.Nc3 Bd7=) 10.0–0 Bd7 11.f4 ef4 12.Rf4 Ne8+=; 9.ba5 Ra5 (9...Nc5 10.Ne6 Ne6 11.0–0 Ra5 12.Nc3 c6=; 9...Qe8 10.Qd2 Bg4 11.0–0 Be2 12.Qe2 d5=) 10.0–0 Nc5 11.f4 ef4 12.Bc3 Ra6+=; 9.Ne6 fe6 10.b5 c6 11.Nc3 d5 12.0–0 Bb4=) 9...c6 (9...c5 10.bc5 Nc5 11.0–0 Qb6 12.Bc1 Qb3=; 9...ab4 10.ab4 Ra1 11.Ba1 c5 12.Bc3 cb4=) 10.d4 (10.0–0 Qb6 11.d4 ed4 12.Bd4 c5=) 10...ed4 11.Bd4 (11.Qd4 c5 12.bc5 Nc5=) 11...ab4 12.ab4 d5 (12...Ra1–/+) 13.c5? (better is 13.Ra8!? Qa8 14.ed5 Bb4 15.Nc3 cd5 16.0–0+=) 13...Ra1–/+ 14.Ba1 Ne4 15.Ne6 fe6 16.0–0 b6 (16...Bf6 17.Bf6 Qf6–/+ (17...gf6?! 18.Bd3=)) 17.Qc2? (better is 17.Bg4!?–/+) 17...bc5–+ 18.bc5 (18.Bd3 Bd6 19.Be4 de4 20.Qe4+=) 18…Bc5 (18...Bc5 19.Bf3 Nd6–+) 0–1. Grassano,Carlos Alberto – Enricci,Juan Andres, corr ARG–ch8 sf, 1977.

6.Be2 Bg4 7.Nbd2 (7.0–0 a5 8.b5 Nbd7=) 7...Nh5 (7...Na6 8.b5 Nc5 9.0–0+=) 8.h3 Be6 9.d4 Nf4 10.Bf1 (10.d5 Bd7 11.0–0 f5+=) 10...d5+= 11.de5 (11.Ne5 de4 12.Ne4 Bd5+=) 11...de4 (11...Bb4 12.Nd4+=) 12.Ne4 Bb4 13.c3 Be7 14.Qd8 Rd8 (worse is 14...Bd8 15.Bc1 Ng6 16.Ba3=) 15.Rd1 (better is 15.Bc1!? Nd3 16.Bd3 Rd3 17.Bg5+=) 15...Rd1–/+ Black is in command 16.Kd1 Ba2 17.g3 Bd5 18.gf4 (18.Nfd2 Ne6–/+) 18...Be4–+ 19.Be2 (19.Bg2 Nc6–+) 19...Nd7 (19...Bc5 20.Rh2–+) 20.Rg1 Rd8 21.Ke1 Nc5 22.Nd4 a6 (22...Na4 23.f3 c5 24.fe4 cd4 25.cd4 Nb2 26.d5–+) 23.f5 Kf8 24.Ba3 Re8 (24...b6 25.f3 Bb7 26.f4–/+) 25.f3 Nd3 26.Kd2? (better is 26.Bd3!? Bd3 27.Be7 Re7 28.Kd2–/+) 26...Ba3–+ 27.Bd3 (27.fe4 Ne5 28.f6 gf6–+) 27...Bd3 28.Kd3 Re5 29.f4 Re8 30.Nf3 f6 31.Rb1 Rd8 32.Kc4? b5 33.Kb3 Bc5 (33...Bc5 34.Ra1 Rd3–+) 0–1. Krueger,Bernhard – Hohlbein,Jens, Baunatal op 1st, 1995.

4.d3 Bg4

5.c4 Be7 6.Nbd2 0–0 7.h3 Bh5 8.g3 c6 9.Bg2 Nbd7 10.0–0 h6 11.a4 Bg6 12.e4 Qc7 13.Rc1 Rfe8 14.Nb3 Bf8 15.b5 Rad8 16.Ba3 Nc5 17.Nc5 dc5 18.Qb3 Bh7 19.Bb2 Nd7 20.Rfe1 g6 21.Bc3 Bg7 22.Bd2 f5 23.Nh2 cb5 24.ab5 Nf8 25.Ra1 b6 26.Ra3 f4 27.Rea1 fg3 28.fg3 Re7 29.Qa2 Rdd7 30.h4 Qd6 31.Ng4 h5 32.Ne3 Ne6 33.Nd5 Rf7 34.Be3 Kh8 35.Rf1 Rf1 36.Bf1 Qb8 37.Bh3 Bg8 38.Rc3 Rb7 39.Rc2 Nd4 40.Rf2 Be6 41.Be6 Ne6 42.Qd2 Qd8 43.Bh6 Rd7 44.Bg5 Ng5 45.Qg5 ˝–˝. Smith,David – Evans,David K, WLS–ch Ogmore by Sea, 1992. (=1.Nf3 Nf6 2.b4 d6 3.Bb2 e5)

5.Nbd2 Be7 6.c4 0–0 7.e3 h6 8.Be2 Nh7 9.0–0 f5 10.Nb3 Nd7 11.d4 e4 12.Nfd2 Be2 13.Qe2 Qe8 14.Rac1 Bf6 (14...Nhf6 15.d5=) 15.Nb1 (15.c5 dc5 16.Nc5 Rb8+=) 15...Qg6 16.Nc3 c6 17.Na5 Rab8 18.c5 d5 19.b5 f4 20.ef4 (20.bc6?? f3 21.Qf3 ef3–+) 20...Bd4 21.Nd5 Bf2 22.Rf2 (22.Qf2 cd5 23.c6 b6+/–) 22...cd5+= 23.c6 bc6 24.Nc6 Rbe8 25.Na7 Qd6 (25...Qb6 26.Nc6 Rf4 27.a4+=) 26.Rc6 Qb8 27.Rg6 Nhf6 28.Nc6 Qc7 29.a4 Kh7 30.Rg3 Nb6 31.Be5 Qb7 32.Qd1 Ra8 33.Bf6 Rf6 34.a5 Nc4 35.Qd5 Na5 36.Qe4 Kh8 37.Qe7 Qe7?? 38.Ne7+– Rb8 39.Nd5 Rf5 40.Nc3 Nc4 41.Rd3 Rb7? 42.g3 Na3 43.Rb2 Nb5 44.Ne4 Rf8?? 45.Rdb3 Re7+/– 46.Rb4 Rd8 47.Nf6 Nc3 48.Rb8 Re1 49.Kg2 Red1 50.Rd8 Rd8 51.Ng4 Ne4 52.Rb7 Nc5 53.Rc7 Ne6 54.Re7 Nd4 55.Ne5 Kg8 56.Kh3 Nf5 57.Ra7 Nd6 58.Kg4 Rf8 59.Rd7 Ne8 60.Ra7 Nf6 61.Kh4 Ne8 62.h3 Nd6 63.Nc6 Kh7 64.Kg4 ˝–˝. Salas Leal,Mario – Cote,Frederic, Haifa ol (Men), 1976. (=1.Nf3 Nf6 2.b4 d6 3.Bb2 e5)

4.d3 g6

5.g3 Bg7 6.Bg2 0–0 7.Nbd2 Bd7 8.c4 Qc8 9.0–0 Bh3 10.Qb3 Nc6 11.Rfc1 Bg2 12.Kg2 Qd7 13.a4 Nh5 14.h3 a5 15.b5 Nd8 16.d4 Ne6 17.e3 ed4 18.Nd4 (18.ed4? Nef4 19.gf4 Nf4 20.Kf1 Qh3 21.Ke1 Qh1 22.Nf1 Rae8 23.Ne5 Qe4 (23...Be5?! 24.de5 Qe4 25.Ne3+=) 24.Ne3 de5–+ (24...Be5?! 25.de5 Nd3 26.Ke2 Nb2 27.ed6=)) 18...Nc5 19.Qc2 Qe7 20.N2b3 Nb3 21.Nb3 Bb2 22.Qb2 Qe4 23.Kg1 b6 24.Qd4 Qe7 25.Nd2 Ng7 26.Ne4 Ne6 27.Qf6 Qf6 28.Nf6 Kg7 29.Nd5 Rac8 30.Ne7 Rcd8 31.Rd1 Rfe8 32.Nc6 Rc8 33.Na7 Ra8 34.Nc6 Nc5 35.Ra3 Re4 36.Rd4 Rae8 37.Kg2 f5 38.Kf3 Kf6 39.g4 fg4 40.hg4 Kg5 41.Kg3 Rd4 42.Nd4 Ne4 43.Kg2 Nd2 44.Nf3 Nf3 45.Kf3 Kh4 46.e4 Rf8 47.Kg2= Rf7 48.f3 Kg5 49.Rd3 Kf4 50.Kf2 Re7 51.Rd1 Re5 52.Rh1 h5 53.gh5 Rh5 54.Rg1 Rc5 55.Rg6 Rc4 56.Rg4 Ke5 57.f4 Kf6 58.f5 Ke5 59.Rg7 Ra4 60.Rc7 Re4 61.Rc6 Kf5 62.Rb6 Ke6 63.Ra6 a4 64.Ra7 d5 65.b6 Kd6 66.b7 Kc7 67.Ra5 Kb7 68.Rd5 Kb6 69.Kf3 Re8 70.Rd1 Ra8 71.Ke3 Kb5 72.Kd3 a3 73.Kc3 Rc8 74.Kb3= Ra8 75.Ra1 ˝–˝. Franco,Victor – Scholz,Christian (2240), Ruhrgebiet–ch U20, 1993. (=1.Nf3 d6 2.b4 e5 3.Bb2 Nf6)

5.g3 Bg7 6.Bg2 0–0 7.e4 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 Bd7 11.0–0 Qc8 12.Nbd2 Nc6 13.c3 Bh3 14.Nc4 Bg2 15.Kg2 Re8 16.b5 Nd8 17.b6 Ne6 18.bc7 Qc7 19.Ne3 Bh6 20.Nd2 Ng5 21.f4 ef4 22.Rf4 (worse is 22.gf4 Ne6 23.Kh1 Nf4–/+) 22...Nh5 23.Nd5 (better is 23.Rf1!? Qd7 24.Nf5+/–) 23...Qd7?? (better is 23...Nf4 24.gf4 Qd8=) 24.Qh5!!+– (24.Qh5 gh5 25.Nf6 Kh8 26.Nd7+–) 1–0. Gentes,Kevin (2320) – Tang,Edward (1995), Kent Oliver Memorial, 2005. (=1.Nf3 Nf6 2.b4 d6 3.Bb2 e5)

4.e3

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.Nf3).

4.e3 a6 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 a6 5.Nf3).

4.e3 Nbd7 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Nbd7 5.Nf3).

4.e3 Be6 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3).

4.e3 Bf5 (--> 1.b4 e5 2.Bb2 d6 3.e3 Bf5 4.Nf3 Nf6).

4.e3 Bf5 5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3).

4.e3 Bg4 5.Be2 Nbd7 6.c4 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 Nbd7).

4.e3 Be7

5.a3 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.Nf3).

5.a3 0–0 6.c4 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4 0–0 6.Nf3).

5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3).

5.c4 Nbd7 6.Nc3 0–0 7.Be2 b6 8.0–0 Bb7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0–0 6.Be2 b6 7.0–0 Bb7 8.Nc3 Nbd7).

5.Be2 0–0 6.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0–0 6.Be2).

5.Be2 Bg4 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.Nf3 Bg4 5.Be2 Be7).

4.e3 g6

5.c4 Nbd7 6.Be2 Bg7 7.d3 0–0 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.d3 Nbd7).

5.c4 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5).

5.c4 Bg7 6.d3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d3 e5).

5.c4 Bg7 6.d3 0–0 7.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.d3).

5.c4 Bg7 6.d4 ed4 7.ed4 0–0 8.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 e5 7.Be2 ed4 8.ed4).

5.Be2 Bg7 6.0–0 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0–0 5.Be2 d6 6.0–0 e5).

5.Be2 Bg7 6.0–0 0–0 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.0–0).

5.Be2 Bg7 6.0–0 0–0 7.c4 Nbd7 8.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.0–0).

5.Be2 Bg7 6.c4 0–0 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5).

4.g3 g6

5.Bg2 e4 6.Nd4 d5 7.a3 a5 8.b5 c5 =.

5.Bg2 Bg7 6.Nc3 0–0 7.e4 Bg4 8.Qc1 Nc6=+ 9.a3 a5 10.b5 Bf3 11.Bf3 Nd4 12.Qd1 a4 13.Bg2 Ra5 14.Bf1 d5 15.f3 de4 16.fe4 Qd7 17.h4 Nh5 18.Rg1 f5 19.Be2 Nf6 20.Bc4 Kh8 21.d3? fe4–+ 22.de4 Ng4 23.Rf1 Rf1 24.Bf1 Ne3 25.Qd3 Nec2 26.Kd1 Na1 27.Ba1 Qf7 28.Nd5 Nb5 29.Bh3 c6 30.Nf4 Qb3 31.Kd2 Qd3 32.Nd3 Na3 33.Be6 Nb5 34.Ne5 Nd6 35.Bc3 Re5 36.Be5 Be5 (36...Be5 37.g4 Ne4 38.Kc1 b5–+) 0–1. Feldstein,R – Benko,Pal, New York, 1989.

5.Bg2 Bg7 6.d3 0–0 7.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5 7.d3).

3.Nf3 Bg4

4.Nc3 Nf6 5.e4 Nc6 6.Bb5 g6 7.h3 Bf3 8.Qf3+= Bg7 9.0–0–0 0–0=+ 10.Bc6 bc6 11.b5 Rb8 12.bc6=+ Qe8 13.d4 Qc6 14.de5 Qb7 15.Ba3 Bh6 16.Rd2 Qa6 17.Nd5? Nd5 18.ed5 Qc4 19.Kd1 Rb1 20.Bc1 Rc1! 21.Kc1 Qd4 22.c3 Qd2 23.Kb1 Rb8 24.Ka1 Qb2# 0–1. Davies – Rayetzky, e–mail, 1996.

4.c4 Nd7 5.Nc3 Ngf6 6.d4 Be7 7.h3 Bf3 8.gf3 ed4 9.Qd4 0–0 10.Nd5 Nd5?? 11.Qg7 (11.Qd5 a5=+; 11.cd5 Bf6 12.Qd2 Bb2 13.Qb2 c6=+). guest1238 – guest2229, ICC, 2003.

4.d3 Nd7 5.Nbd2 f5 6.g3 Be7 7.Bg2 c6 8.0–0 Bf6 9.c4 Ne7 10.e4 Qb6 11.Rb1 Qc7 12.h3 fe4 13.Ne4 Bf3 14.Qf3 0–0 15.Qg4 Nc8 16.Qe6 Kh8 17.h4 (17.f4 Qd8+/–) 17...Rd8 18.Qf5 (18.f4!? Nf8 19.Qf5+/–) 18...Ne7= 19.Qe6 Nc8 20.Bh3 Nf8 21.Qf5 Ne7 22.Qf3 Ng8 23.d4 Qe7 24.Rfe1 Re8 25.d5 cd5 26.cd5 Nd7 27.Rbc1 Rac8 (27...Nb6 28.Be6+/– (28.Nf6?! Nf6 29.Be6 Rf8=)) 28.Qd3 (28.Qa3!? Rc1 29.Rc1+– (29.Bc1?! Nb6+/–)) 28...Rc1+/– 29.Rc1 Nf8 30.a4 Qd8? 31.Qb5+– Qb8 32.Nd6! Re7 33.Ne4 Rc7 34.Rc7 Qc7 35.Qc5 Qd8 36.d6 Nh6 37.Qc7 Qe8 38.d7 Nd7 39.Qd7 (39.Qd7 Qd7 40.Bd7+–) 1–0. Danek,Vaclav (1990) – Zalsky,Petr (2030), CZE–chT2a, 2007.

4.d3 Be7 5.Nbd2 a6 6.e3 Nc6 7.a3 Nf6 8.Be2 0–0 9.0–0 Nd7 10.c4 b5 (10...Bf5 11.d4=) 11.h3 Bh5 12.d4 bc4 13.Nc4 (13.d5!? Ncb8 14.Nc4+=) 13...e4= 14.Ne1 Be2 15.Qe2 d5 16.Nd2 Bd6 17.Nb3 Ne7 18.Nc5 Nb6 19.Na6 Nc4 20.Nc5 Bc5 21.dc5 Ng6 22.Qc2 Nge5 23.Be5 Ne5 24.Qc3 Qf6 25.Qd4 Qe6 26.Nc2 Nc4 (26...Ra4!?+=) 27.a4+/– c6 28.b5 Na5 29.Qc3 Rfb8 30.Rfb1 Nc4 31.Nd4 Qe5 32.Qb4 Na5 33.Ra3 h6 34.Qe1 Qc7 35.Qc3 Qd7 36.Qc2 Qc7 37.Ra2 Qd7 38.Rab2 Qc7 39.bc6 Rb2 40.Qb2 Nc6 41.Qb6 Qb6 42.cb6 Na5 43.Rb5 Nb7 44.Rd5 Kf8?? 45.Rd7 Na5 46.Ra7 (46.Ra7 Rb8 47.Ra5 Rb6 48.Re5+–) 1–0. Castellanos Palop – Camarasa Escutia, La Pobla de Vallbona op–B, 2004.

4.d3 g6 5.Nbd2 Bg7 6.e3 Nd7 7.Be2 Ngf6 8.0–0 0–0 9.c4 Qe7 10.Rb1 Rab8 11.a4 a6 12.Nb3 b6 13.Qc2 Nh5 14.h3 Be6 15.Nh2 f5 16.f4 Qh4 17.Bh5 Qh5 18.Qf2 Bf6 19.Nf3 Rbe8 20.fe5= Ne5 21.Ne5 Be5 22.Be5 de5 23.Nd2 Qg5 24.Nf3 Qf6 25.Rbc1 Bd7 26.b5 a5 27.c5 Rc8 28.Qa2 Be6+= 29.Qb2 e4 30.Qf6 Rf6 31.de4 fe4 32.Nd4 Rf1 33.Kf1 Rf8 34.Ke2 Bd5 35.cb6 cb6 36.Nc6 Bb3= 37.Ra1 Bc4=+ 38.Kd2 Rf2 39.Kc3 Bd3 40.Ne5 Bf1 41.Nd7+= Bg2 42.Nb6 Bh3 43.Nc4 Bc8 44.b6 Rf6 45.Rb1 g5 46.b7 Bb7 47.Rb7 g4 48.Rb2 h5 49.Rh2 Rh6+/– 50.Nd2 g3 51.Rg2 h4 52.Ne4 Rg6 53.Kd2 Kf7 54.Ke2 Ke6 55.Kf3 Kf5 56.Ng3 (56.Ng3 hg3 57.Rg3+/–; 56.Rd2 Ke5 57.Rc2+/–) 1–0. Bedbur,Heinz – Fusenig, Neuss, 1990.

4.e4 Nc6 5.b5 Bf3 6.Qf3+= Nce7 7.Bc4+/– Nf6 8.0–0 c6 9.d4 Ng6 10.de5 Ne5+= 11.Be5 de5 12.Nc3 Bb4 13.Rad1 Qc7 14.Ne2 0–0= 15.Ng3 Rad8 16.bc6= bc6 17.Nf5+= Rd1 18.Rd1 Rd8 19.Rd8 Qd8 20.h3 a5 21.a3 Ba3?? 22.Qa3+– Ne4 23.Qa5 Qa5–+ (23...Qa5 24.Ne7 Kf8 25.Nc6 Qc5 26.Ne5 Qf2 27.Kh1 Qe1 28.Kh2 Qg3 29.Kh1 Qe5–+) 0–1. wood – isnow, Live Game Caissa's Web, 2005.

4.e4= Bf3 5.Qf3+= Qh4 6.Bc4 Nf6 7.Nc3 Ng4? 8.Qf7 Kd8 9.Nb5 Nf2?? 10.Qc7 Ke8 11.Bf7# 1–0. Wall,Bill – ChiefEn, Microsoft Gaming Zone, 2000.

4.h3 Bf3 5.ef3 Nf6 6.c4 Nbd7 7.d3 Be7 8.Nc3 0–0 9.Ne4 c6 10.Be2 Rc8 11.0–0 Re8 12.a3 Nh5 13.g3 f5 14.Nd2 Rf8 15.f4 ef4?? (better is 15...Nhf6=) 16.Bh5+– fg3 17.fg3 1–0. Fournier,Frederic – carbala, Active (5/0), 2005.

4.h3 Bh5 5.d3 Nf6 6.e3 Nc6 7.a3 Be7 8.Be2 0–0 9.0–0 Bf3 10.Bf3 Qd7 11.Nd2 d5 (11...a6 12.c4+=) 12.Be2 (12.b5!? Nd8 13.Be5+/–) 12...d4 13.ed4 ed4 (13...Nd4 14.Re1 Bd6 15.Nf3=) 14.Nf3 (14.Nb3 a5 15.ba5 Rfe8+=) 14...h6 (14...b5 15.Qd2=) 15.Re1 (15.b5 Nd8 16.Nd4 a6+/–) 15...Rad8 (15...a6 16.Nd2 a5 17.b5=) 16.Qd2 (16.b5 Na5 17.Nd4 c5 18.bc6 Nc6 19.Nc6 bc6+/–) 16...Nh7? (16...a6 17.c3=) 17.Bf1 (better is 17.b5!? Nb8 18.Nd4+/–) 17...Bf6 18.Rad1 Ng5 19.Qf4 Increases the pressure on d4 19...Nf3 20.Qf3 Rfe8 21.Qg3 1–0. Fournier,Frederic (1670) – tzadik, Active, 2006.

4.Nc3 Bf3

5.ef3 Nf6 6.a3 Nbd7 7.Bc4 (7.Bc4 c6 8.f4=). pierred – viktorb, Rated game, 5m + 1s, 2003.

5.gf3 d5 6.e3 Bb4 7.Rg1 Bf8 8.d4 ed4 9.ed4 c6 10.Qd3 Qd7 11.0–0–0=+ b5 12.Re1= Ne7 13.Ba3 g6 14.Rg5 f6=+ 15.Rg3 a5 16.Bh3 f5–/+ 17.Ne2 b4–+ 18.Bb2 Bh6 19.Kb1 Na6 20.Bg2 Qb7 21.f4 a4 22.h4 a3 23.Bc1=+ c5 24.dc5= Nc5?? 25.Qd4+– Rg8? 26.Qc5 Rc8 27.Qe3 Qc7 28.Nd4 Bg7 29.c3 bc3 30.Ba3 c2 31.Kc1 Bf6 32.Nb5 Qa5 33.Nd6 Kf8 34.Nc8 Rg7 35.Ne7 Be7 36.Be7 (36.Be7 Kg8 37.Qe6 Rf7 38.Bd5 Qd5 39.Qd5 Kg7 40.h5 Rf6 41.Bf6 Kf8 42.Qd8 Kf7 43.Re7 Kf6 44.Qf8#) 1–0. Garfield85 (1900) – Netto (1605), internet, 2006.

4.c4 Nf6

5.Qb3 Be7 6.d4 Bf3 7.Qf3 Nc6 8.b5 Nd4 9.Bd4 ed4 10.Qb7 0–0 11.g3 d5 12.Bg2 Bb4 13.Kf1 Rb8 (13...d3!? 14.e3 Ng4–+) 14.Qa7+= dc4 15.Qa4 (15.Bc6 Qd6 16.a3+=) 15...Qe7?? (better is 15...d3 16.e3 Nd5–+) 16.a3= Bc5 17.Qc4 Ne4 (better is 17...Ng4!? 18.Ra2 Qe6=) 18.Qd3+/– f5 19.Ra2 c6 20.a4 cb5 21.ab5 Ra8 22.Ra8 Ra8 23.Bf3 Ra1 24.Kg2 Qe6 25.Nd2?? Rh1–+ 26.Ne4 fe4 27.Be4 Ra1 28.Bh7 Kf7 29.Qf3 Ke8?? 30.Qh5+– Kd8 31.Qc5 Qd7 32.Bf5 Qb7 33.Kh3 Rd1 34.Qd6 (34.Qd6 Ke8 35.Bg6 Qf7 36.Qe6 Kd8 37.Qf7 Rg1 38.b6 Rg3 39.Kg3 d3 40.Qe8) 1–0. Garcia Corada,Pedro – Mendez Bayon,David, Valladolid–ch Provincial Abs, 1989. (=1.Nf3 d6 2.b4 e5 3.Bb2 Bg4)

5.d3 Be7 6.g3 0–0 7.Bg2 Nbd7 8.0–0 c6 9.Nbd2 Qc7 10.Rc1 Rfe8 11.Nb3 Rad8 12.h3 Bh5 13.b5 Bf8 (13...Bf3 14.Bf3 cb5 15.cb5=) 14.Qd2 Qb8 15.bc6 bc6 16.Ng5 (16.g4 Bg6+/–) 16...d5= 17.cd5 cd5 18.Bc3 h6 19.Nf3 e4 20.Nfd4 e3 21.fe3 Qg3 22.Nf5 Qg5 23.Rf4 Rc8 24.Nbd4 Bc5 25.Kh1 Bd4 26.Nd4 Qe5 27.Nf5 Qe6 28.Rcf1 Be2? (better is 28...Rc7 29.e4 Qc6 30.Nh6 gh6 31.Bf6 Qc2+–) 29.Ng7+– Qe3 30.Ne8 Re8 31.Rf6 Nf6 32.Rf6 Qc5 33.Rh6 Re3 34.Rh8 1–0. Tolmacheva,Eva (1940) – Kovalev,Evgeny (2250), Koltsovo op–A, 2006.

4.e3 e4

5.h3 ef3 6.hg fg 7.Bg2.

5.h3 Bf3 6.gf3 d5? 7.fe4 f6 8.Nc3 Bb4 9.Nd5 Bd6 10.Rg1 g5 11.Qh5 Kd7 12.Qg4 Ke8 13.Qe6 Ne7 14.Nf6 Kf8 15.Bc4 Kg7 16.Qf7 Kh6 17.Ng4 1–0. Wall,Bill – Laux,Daniel, chess.com, 2012.

5.h3 Bf3 6.gf3 ef3 7.Qf3.

5.h3 Bf3 6.gf3 Nf6 7.fe4.

4.e4 Nf6

5.Nc3 Be7 6.Be2 Nbd7 7.h3 Bh5 8.a3 Nb6 9.0–0 0–0 10.d4 ed4 11.Qd4+= c5 12.Qe3 Nc4?? 13.Bc4+– 1–0. rancho – jeruzal, internet, 2010.

5.Nc3 Bf3 6.Qf3 c6 7.Bc4 b5= 8.Bb3 a5 9.ba5 b4 10.Ne2+= c5 11.0–0 Be7 12.d4 Ra5 13.a3 cd4 14.ab4 Ra1 15.Ra1 0–0 16.Ra8 Qb6= 17.c3 Nc6 18.Ra4+= Qb7 19.Bc4 Ra8 20.Ra8 Qa8 21.Bd5 Qa4 22.Qd3 Nd8 23.Nc1 Ne6 24.Qc4 Kf8?? 25.Be6 fe6 26.Qe6?? Qd1 0–1. gtate (1930) – cnselway (2035), net–chess.com, 2005.

5.d3 Nc6 6.a3 a6 7.Be2= Be7 8.0–0 0–0 9.h3 Be6 10.Nh2 Qd7 11.f4= ef4 12.Rf4 h6 13.Ng4 Nh5 14.Nh6+/– gh6 15.Bh5 Bg5 16.Rf1 Ne7 17.Bg4 Bg4 18.hg4 d5 19.Nd2 Rad8 20.Qe2 Ng6 21.ed5 Qd5 22.Ne4 Rfe8 23.Qf3 Nh4 24.Qg3 Ng6 25.Bf6 Rd7 26.Bg5 Kg7?? 27.Bf6 Kf8 28.Qh3 Re6 29.Qh6 Ke8 30.Ng5 Rf6 31.Rae1 Re7 32.Re7 Ke7 33.Re1 Kd7 34.Ne4 Rf4? 35.Qf4! Nf4 36.Nf6 Kd6 37.Nd5 Kd5 38.Re7 f6 39.Rc7 Ne2 40.Kf2 Nd4 41.c4 Kd6 42.Rf7 Nc2 43.Rf6 Kd7 44.g5 Na3 45.g6 Nc2 46.g7 Nb4 47.g8Q Nc6 48.Rc6! Kc6 49.Qd5 Kc7 50.c5 a5 51.Qd6 Kc8 52.c6 a4 53.Qd7 Kb8 54.Qb7# 1–0. Schmitt,Cecilia – Caniza Villalba,Jessica M, Pan American–ch U14 Girls, 2001.

5.d3 d5 6.ed5 Qd5 7.a3 Bf3 8.Qf3 Qf3 9.gf3 Nbd7 =+.

3.Nf3 g6

4.c4 Bg7 5.e3 Nf6 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5).

4.d4 f6 5.de5 fe5 (5...de5 6.Qd8 Kd8 7.Ne5 Bb4 8.c3 fe5 9.cb4+=) 6.Ne5+/– Bg7 7.Nc6 Qd7 8.Bg7 Qg7 9.Qd4 Qd4 10.Nd4 Ne7 11.e4 Bd7 12.Bc4 a6 13.Nc3 Nbc6 14.Nc6 Nc6 15.Nd5 0–0–0 16.0–0 Rhf8 17.a4 Ne5 18.Be2 Kb8 19.b5 a5 20.b6 cb6 21.Nb6 Bc6 22.f3 Nd7 (22...d5!? 23.ed5 Bd5+/–) 23.Nc4+– Ne5 (23...Nc5 24.Rfb1+–) 24.Na5 Bd7 (24...Kc7 25.f4 b6 26.Nc6 (26.fe5?! ba5 27.ed6 Kd6+/–) 26...Nc6 27.Bd3+–) 25.Rfb1 Bc8 26.Rb6 Rf7 27.Rab1 Rc7 28.f4 Nd7 29.Nc6 Ka8 30.Nd8 Nb6 31.Rb6 Rc2 32.Kf2 Bg4 33.Nb7 Be2 34.Nd6 Ka7 35.Rb7 Ka6 36.Rh7 g5 37.f5 Bc4 38.Kf3 g4 39.Kg4 Rg2 40.Kf3 Bf1 41.f6 (41.f6 Rg8 42.f7+–) 1–0. Zgarda,Jakub (1865) – Stefanski,Stefan, XVIII MFSz Poznan Poland, 2009. (=1.Nf3 d6 2.b4 g6 3.Bb2 e5)

4.e4 (--> 3.e4 g6 4.Nf3).

4.d4 e4

5.d5 f6 6.Ng5 Bf5 7.e3 h6 8.Ne6 Qe7 9.Nf8 Qf8 10.Nd2 Rh7 11.Bd4 Re7 12.c4 Nd7 13.g4 1–0. Marre – crimson53, zagraj.pl, 2003.

5.d5 Nf6 6.Nfd2 e3 7.fe3 Bg7 8.e4 0–0 9.c4 Re8 10.Nc3 Ng4 11.Qb3 Nd7 12.Nd1 Ndf6 13.h3 Ne5 14.g4 a5 15.Bg2 ab4 16.Qb4 Nfd7 17.0–0 Nc5 18.a4 b6 19.a5 Ra6 20.Bc3 Qh4 21.Ra3 Qh6 22.Bb2 Bd7 23.ab6 Rb6=+ 24.Qa5 Nb7 25.Qc3= Rb2 26.Nb2 Ng4 27.Qf3 Bd4 28.e3 Ne3 29.Qf7 Kh8 30.Nf3 Bc5 31.Re3 Be3 32.Kh1 Nc5 33.Nd1 Bf4 34.Nc3 Rf8 35.Ng5 Qg7 36.Qg7 Kg7 37.Nf3 Re8 38.Nd4 Be5 39.Ndb5 c6 40.dc6 Bc6 41.Rd1 Ra8 42.Kg1 Ra5 43.Kf2 Bd7 44.Ke3 Kh6 45.Bf1 Kg5 46.Nd5 Kh4 47.Nb6 Be6 48.Nd5 Kg3 49.Ndc7 Bf4 50.Kd4 Bf7 51.Nd5 Be5 52.Ke3 Ra2 53.Bd3 Rb2 54.Nd4 g5 55.Rg1 Rg2 56.Nf5 Kh2 57.Rg2 Kg2 58.Be2 Kh3–+ 59.Nb6 Be6 60.Bf1 Kh2 61.Be2 Kg2 62.Nd5 Bd5 63.cd5 Bf4 64.Kd4 Kf2 65.Bg4 Be5 66.Kc4 Ne4 67.Kd3 Nf6 68.Nh6 Kg3 69.Be6 Kf3 70.Bf5 g4 71.Ng4 Ng4 72.Bh7 Ba1 73.Bf5 Ne5 74.Kd2 Nc4 75.Kd3 Kf4 76.Bc8 Nb6 77.Be6 Ke5 78.Bg4 Nd5 0–1. Markus,Roland – Blankenberg,Bruno, TKM/SF/02, 2001.

4.e3 Bg7

5.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 g6 4.e3 Bg7 5.Nf3).

5.c4 Ne7 6.Be2 0–0 7.d4 (--> 1.b4 e5 2.Bb2 d6 3.c4 g6 4.e3 Bg7 5.Nf3 Ne7 6.d4 0–0 7.Be2).

5.Be2 Nf6 6.0–0 0–0 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.e3 d6 6.Be2 e5 7.0–0).

3.Nf3 h6

4.d3 Bg4 5.Nbd2 Be6 6.c4 f5 7.e3 Nc6 8.b5 Na5 9.Be2 Nf6 10.0–0 Ng4 11.Qa4 b6 12.d4 e4 13.Ne1 d5 14.cd5 Qd5 15.Bg4 fg4+= 16.Qc2 g3 17.fg3+/– Bb4 18.Ne4 Be1? 19.Rae1+– Nc4 20.Nc3 (20.Nc3 Qd6 21.d5+–) 1–0. Wall,Bill – Catcher, internet, 2000.

4.e3 b5 5.Bb5+/– Nd7 6.0–0 Rb8 7.Qe2 c5 8.bc5 dc5? 9.Be5 (9...Rb6 10.Nc3+–; 9.Ne5 Rb6+–) 1–0. Wall,Bill – Unkut, Internet, 2003.

4.e3 e4!? 5.Nd4 Nf6 =.

4.e4 Bg4 5.h3 Bh5 6.Nc3 Nc6 7.g4 Bg6 8.b5 Nd4 9.Bc4 Nf6 10.d3 Be7 (better is 10...c5!?=) 11.Nd4+/– ed4 12.Nd5 c6 13.bc6 bc6 14.Ne7 Qe7 15.0–0 (worse is 15.Bd4 d5 16.Bf6 gf6=) 15...d5? (better is 15...c5!?+/–) 16.ed5+– Qd6? (better is 16...0–0 17.dc6 Qc5+–) 17.Re1 Kf8 18.dc6 Qc6 19.Bd4 Kg8 20.Qb1 Rd8 21.Ba7 Qf3 22.Re3 Qf4 23.Re7 Kh7 (23...h5 24.Qb6 Kh7 25.Qe3 Qe3 26.fe3 hg4 27.hg4 Ng4 28.Kg2+– (28.Bf7?! Bf7 29.Rf7 Rd6+–)) 24.Bf7 Bf7 25.Rf7 Rhf8 26.Be3 Qe5 27.Rb7 Nd5 (27...Qd5 28.Qb6+–) 28.d4 Qe4 29.c4 Qb1 30.Rab1 Nc3 31.R1b6 Ne2 (31...Kg8 32.Kg2 Rc8 33.c5+–) 32.Kf1 Nd4 (32...Ng3 33.Kg2 Ne4 34.Rh6 Kg8 35.Rc6+–) 33.Bh6 Rg8 34.Bg5 Rgf8 35.Bd8 Rd8 36.c5 Nf3 (36...Rc8 37.Rd6 Nc6 38.Rdd7+–) 37.c6 1–0. Janek – Mdislam, internet, 2016.

4.d3 Nf6

5.Nbd2 b6 6.e4 Bd7 7.d4 ed4= 8.Nd4 Nc6 9.Nc6+/– Bc6 10.b5 Bb7 11.Bc4 Qd7 12.Qf3 Be7 13.0–0 Rf8 14.Rad1 0–0–0 15.Rfe1 Qe8 16.a4 Nh7?? 17.Qf5 Kb8 18.Qh7 Rg8 19.a5 Bc8 20.Bg7 Bg5 21.Bd4 Rd7 22.Nf3 Rg6 23.Ng5 f6 24.Nf7 Rg4 25.f3 Rg8 26.ab6 ab6 27.Bf6 Qf8 28.Be6 Rf7 29.Bf7 Bg4 30.Qg8 Qg8 31.Bg8 Bf3 32.gf3 Kb7 33.Bd5 Kc8 34.Ra1 Kd7 35.Ra8 c6 36.bc6 Kc7 37.Bd8# 1–0. mrkt – WODZU1, zagraj.pl, 2006.

5.e4 c6 6.Nc3 b5 7.a4 Qb6? 8.Be2 Ng4 9.0–0 a6 10.d4 f6 11.ab5 cb5 12.Nd5 Qc6 13.Nh4 Kf7 14.Bg4 Bg4 15.Qg4 g5 16.Qh5 Ke6 17.Nf5 ed4 18.Nd4 Kd7 19.Qf7 Kc8 20.Nc6 Nc6 21.Qc7# 1–0. funky – rio, internet, 2011.

5.e4 Bg4 6.Nbd2 Nbd7 7.h3 Bh5 8.Be2 Be7 9.0–0 0–0 10.Re1 Re8 11.a3 c6 12.Nh4 Be2 13.Qe2 g6 14.Nhf3 Bf8 15.d4 Bg7 16.de5 de5 17.Nc4 Qc7 18.Rad1 Re6 19.Rd2 b5 20.Na5 Rd6 21.c4 a6 22.Rc2+/– bc4 23.Rc4 Nb6 24.Be5 Nc4 25.Qc4 Ne8 26.Bd6 Nd6 27.Qc6 Qc6 28.Nc6 Kf8 29.e5 Nc4 30.a4 Nb6 31.a5 Nd5 32.Rd1 Nc3 33.Rd7 Rc8 34.Ncd4 Rc4 35.b5! Nb5 36.Nb5 ab5 37.a6 Ra4 38.a7 1–0. pierred (2760) – agostinhoarruda (2510), net–chess.com, 2010.

3.f4 Nd7

4.e3 Ngf6 =+.

4.e3 g6 5.f5?? (better is 5.Nf3!?=) 5...gf5 (better is 5...Qh4 6.g3 Qb4–+) 6.Bc4?? (6.Nf3 Bg7+=) 6...Ngf6 (better is 6...Qh4 7.g3 Qc4–+) 7.Nf3–/+ d5 8.Bb3 Bd6 9.0–0 c6 10.c4 dc4 11.Bc4 Nb6 12.Bf7? (better is 12.Bb3 e4 13.Nh4+=) 12...Kf7–+ 13.Ng5? (13.Ne5 Ke8 14.a3–+) 13...Kg6 14.Nf3 Nc4 15.Bc3 Nd5 16.Re1 Nc3 (16...Nb4?! 17.d3 Nb6 18.a3–+) 17.Nc3 h6 (better is 17...e4 18.Nd4 Nb2–+) 18.Nh4 (18.Qb3 Qg8 19.d3–+) 18...Kh7 (better is 18...Qh4 19.b5 e4–+) 19.Nf5 0–1. Lipski,Tadeusz (2150) – Tusk,Kazimierz (1955), XIII Int Ch of Poland, 2007.

4.fe5 Qh4 5.g3 Qb4 6.Bc3 –/+.

4.Nf3 e4 5.Ng5=+ d5 6.e3 Ngf6 7.a3=+ c5 8.b5 Bd6 9.Be2 0–0 10.0–0=+ Nb6 11.a4 h6 12.Nh3 Bh3 13.gh3 d4 14.c3 d3–+ 15.Bg4 Nc4 16.Bc1 g6 17.Qe1 Ng4 18.hg4 Be7 19.Qg3 b6 20.Na3 Na3 21.Ba3 c4 22.Be7= Qe7 23.f5 g5 24.f6 Qe6 25.h4 Kh7=+ 26.hg5 Rg8 27.Rf5 Rg6 28.Kf2 Rag8?? 29.Rh1+– Rg5?? 30.Qf4 Kg6+/– 31.Rh5 Rh5 32.Rh5 Rh8 33.Kg3 Qf6 34.Qe4 Kg7 35.Rf5 Qd6 36.Qf4 Qf4= 37.Rf4 Rc8 38.Rd4 Rc7 39.Rd6 f6? 40.Rc6+– Rd7 41.Rc4 Kf7 42.Kf4 Ke6 43.Rc6 Kf7 44.c4 Ke7 45.Kf5 1–0. ollyw (2475) – nerveraking (2215), net–chess.com, 2003.

4.Nf3 ef4!? 5.Rg1 Ngf6 –/+.

4.fe5 de5

5.a3=+ Ngf6 6.e3 Ne4 7.Nf3= Bd6 8.Bc4 0–0 9.0–0 Ng5 10.d3 Qe7 11.e4 h6 12.Nc3 c6 13.Ne2 Nf3 14.Rf3 Nf6 15.h3 Be6 16.Be6= Qe6 17.Ng3 c5 18.c3 Rad8 19.Bc1 cb4 20.ab4= a6 21.Nf5 Nh7?? 22.Rg3+– g5 23.Qh5 (23.Qh5 Kh8 24.Nh6+–) 1–0. Dabrowski,Bohdan – NN, Sarzyna Poland, 1987.

5.e3 Bb4 6.Nf3 Qe7 7.Bb5 c6 8.Bc4 Ngf6 9.0–0 0–0 10.a3 Bd6–+ 11.Nc3 Nc5 12.Qe1 e4 13.Nh4 Qe5 14.g3 Bh3 15.Rf2 Ng4 16.Rf5 Qe7 17.Qe2? Ne5 18.Rff1?? Qg5 19.Bb3 Nb3 20.cb3? Nd3 21.Ne4=+ Qe7?? 22.Qd3+– Rad8 23.Nd6 Rd6 24.Qc3 f6 25.Rf2 Rfd8 26.Nf5 Bf5+/– 27.Rf5 Rd2 28.Raf1 Qe4 29.Qc4?? Kh8?? 30.Qe4+– (30.Qe4 Rb2 31.Qe7+–) 1–0. Eralos (2060) – lluisg (1925), ajedrez21.com, 2002.

5.e3 Qh4 6.g3 Qb4 7.Ba3 –/+.

3.f4 ef4

4.c4?? d5 5.Nf3–/+ dc4 6.Qc2 g6?? 7.Bh8+– f6 8.Qc4 Nh6 9.Qf4 f5 10.Bb2 Nc6 0–1. thotares (1620) – jega, internet, 2007.

4.Nf3 c6 5.c4 Qb6 6.a3 c5 7.Nc3 cb4 8.Nd5= Qc5 9.Qa4 Bd7 10.Qb4 Qb4?? 11.ab4+– Kd8 12.Nb6! ab6 13.Ra8 Kc8 14.Bd4 Kc7 15.Ng5 Nh6 16.Bb6! Kb6 17.Rb8 Kc7 18.Ra8 f6 19.Nh7! Rh7 20.Rf8 Nf5 21.h3 Nd4 22.Kf2 b5 23.cb5 Bb5 24.e3 fe3 25.de3 Bf1 26.Rf1 Nb5 27.Rf7 Kc6 28.Kg3 d5 29.R1f6! gf6 30.Rh7 1–0. Wall,Bill – Lee, internet, 2000.

4.Nf3 d5 5.e3 Bb4?? 6.c3?? Bd6–+ 7.Be2 Bg4 8.0–0 Bf3 9.Bf3 fe3 10.Bd5 Nh6?? 11.Qh5 0–0 12.de3 Nd7 13.c4 c6 14.Be4 Qc7?? 15.Bg7+/– Bh2? 16.Kh1+– Nc5?? 17.Bh6 Qe5 18.Rf5 Ne4 19.Qg4 Kh8–/+ 20.Bf8 Ng3 21.Kh2 Nf5 22.Qf4 Qa1 23.Bb4 Qg7 24.Qf5 Re8?? 25.Bc3+– f6 26.Bf6 Kg8 27.Bg7 Kg7 28.Qd7 Kf8 29.Qh7 Re6 30.Qb7 Re3 31.Qc6 Re7 32.Qf6 Rf7 33.Qf7! Kf7 34.g4 a5 35.c5 a4 36.c6 a3 37.c7 Kg6 38.c8B Kg5 39.Na3 Kh4 40.Kg2 Kg5 41.Kf3 Kg6 42.Nc4 Kg5 43.Bf5 Kh6 44.Kf4 Kg7 45.Ke5 Kh6 46.Be6 Kg5 47.Ne3 Kg6 48.Ng2 Kg5 49.Bf5 Kh6 50.Nf4 Kg7 51.Nh5 Kh6 52.a4 Kg5 53.a5 Kh6 54.Ng7! Kg7 55.Bh7! Kh7 56.a6 Kh6 57.g5! Kg5 58.Ke6 Kh6 59.Kf6 Kh5 60.a7 (60.a7 Kg4 61.a8Q Kf4 62.Qc6 Ke3 63.Qc5 Ke4 64.Qc4 Kf3 65.Ke5 Kf2 66.Ke4 Kg3 67.Qf1 Kg4 68.Qg2 Kh5 69.Kf5 Kh4 70.Qg4#) 1–0. Towns,Barry (1765) – Poustie,Harold, Winnipeg Yanofsky mem, 2006.

4.Nf3 Bg4 5.h3 Bh5 6.e4 Nf6 7.Bf6 Qf6 8.Nc3 c5 (better is 8...Qg6!? 9.Qe2 Nc6–/+) 9.bc5 (9.Nd5!? Qd8 10.Bb5 Nc6 11.bc5=) 9...dc5=+ 10.Bb5 Nc6 11.0–0 Be7 12.Nd5= Qd6 13.c4 0–0 14.Qc1? Bf3–+ 15.Bc6 bc6 16.Ne7 Qe7 17.gf3 Qg5 18.Kf2 Qg3 19.Ke2 Rfd8 20.Rg1?? Qh2 (20...Qh2 21.Kd1 Qg1 22.Kc2 Qg2–+) 0–1. gtate (1975) – petemarkou (2115), net–chess.com, 2006.

4.Nf3 Nf6

5.c4 Bg4 6.h3 Bh5 7.Nc3 Be7 8.d3 0–0 9.Qd2 Nc6 10.a3 Re8 11.Qf4=+ Bf3 12.gf3 Nh5 13.Qg4 Nf6 14.Qg3? Kh8?? 15.Ne4 Rg8 16.Ng5 Qe8= 17.h4 Nh5 18.Qg4+= Nf6 19.Qf5 Qd7?? 20.Nf7 1–0. gtate (1965) – rar (2015), net–chess.com, 2006.

5.d3 Nc6 6.Qd2–/+ Be7 7.b5=+ Nb8 8.Qf4 0–0 9.Qg3 h6 10.Nbd2 d5 11.h4 c6 12.bc6 bc6 13.e4=+ de4 14.de4 Bb4 15.c3 Bc5=+ 16.Nd4 Qb6 17.Nc4 Qd8 (17...Qb7 18.e5 Re8 19.Rb1=) ˝–˝. Van Oosterom,Chiel – Porte,Rinze, NED U12 op Hengelo, 1999.

5.e3 a6 6.Bc4? h6 7.0–0 fe3 8.de3 Be7 9.Nbd2 d5–/+ 10.Bb3 Bg4 11.Qe1 Bb4 12.a3 Bc5 13.Ne5 0–0 14.Ng4 Ng4 15.Bd4 Bd4 16.ed4 Re8 17.Qg3 Nf6 18.Nf3 Nc6 19.c4? dc4 20.Ba2 b5 21.Rad1 c3 22.Bb1?? Re7 23.Rd3 Ne4 24.Qf4 Qd5 25.Rc1 Nd8 26.Re3=+ g5 27.Be4= gf4 28.Bd5 Re3 29.Ba8 c6 30.Kf2 a5 31.Ne5 Ne6 32.Nc6+/– a4 33.g3 Rd3 34.gf4 Nf4 35.Ne7 Kf8 36.Nf5 h5 37.Be4 Rh3 38.Ne3?? b4 39.ab4+/– a3? 40.Rc3 a2? 41.Ra3 f6 42.Ra2 Rh2 43.Ng2 h4 44.Kg1 Ng2 45.Kh2 (45.Kh2 Ne3 46.b5+–) 1–0. blackburne – larniletter, ChessWorld.net, 2011.

5.e3 fe3 6.de3 Qe7 7.Bf6 Qf6 8.c3 –+.

5.g3 fg3 6.hg3 Bg4 7.Bg2 c6 8.d3 Be7 9.Nbd2 Qc7 10.a3 Nbd7 11.Nf1 h6 12.Qd2 d5 13.0–0–0 0–0–0 14.Qe3–/+ Nb6 15.Ne5 Be6 16.Ng6 Rhg8 17.Bh3 Bd6 18.Be6= fe6 19.Bf6 gf6 20.Qe6 Kb8 21.Qf6 Bg3 22.Ng3 Qg3 23.Rdg1 Qe3 24.Kd1 Rge8 25.Qf4+= Qf4 26.Nf4 Rh8 27.Rg6+/– Rdf8 28.Ne6 Rfg8 29.Rhh6 a6 30.Nc5 Rc8 31.Rh8 Rh8 32.Rg7 Kc8 33.Rb7 Na4 34.Ra7 Rh1 35.Kd2 Nc5 36.bc5 Ra1 37.Ra6 Kb7 38.Ra4 Rb1 39.e4 de4 40.de4 Rh1 41.e5 Rh5 42.Re4 Kc7 43.Kc3 Rh8 44.e6 Re8 45.a4 Kb7 46.Kb4 Ka6 47.e7 Rb8?? 48.Kc4 Re8 49.Kb4 Rb8 50.Ka3 Re8 51.Re6 Kb7 52.a5 Kc7 53.Ka4 Kd7 54.Re4 (54.Re4 Kc7 55.a6+–) 1–0. Gross,Wilhelm – Zuch, 1988.

3.g3 a6

4.Bg2 c6

5.c4 Bf5 6.Nc3 Nd7 7.Nf3 Ngf6 8.0–0 h6 9.d3 Be7 10.e4 Be6 11.a4 0–0 12.Ne2 Nb6 13.a5= Nbd7 14.Rc1 Nh7 15.d4+= ed4 16.Nfd4+/– Bg4 17.h3 Be2 18.Qe2 Ne5? 19.Nf5+– Qc7? 20.f4 Ng6 21.Bg7 Rfd8 22.Qb2 f6 23.Bh6 Nhf8 24.Rcd1 Ne6 25.Ne7 Qe7 26.f5 1–0. Wall,Bill – Guest489, Internet, 2003.

5.d3 Nf6 6.Nd2 Nbd7 7.Ngf3= Be7 8.0–0 d5 9.a3 Bd6 10.Nh4 Nf8 11.c4 Ng6 12.Ng6 hg6 13.cd5 cd5 14.Rc1 Be6 15.Nf3= Nd7 16.Nd2 Bh3 17.Re1 Bg2 18.Kg2 Qg5 19.Nf3 Qh5 20.Rh1 Qh3=+ 21.Kg1 f6 22.e4 d4 23.Qf1 Qg4 24.Qg2 Kf7 25.h3=+ Qe6 26.Nd2 b5 27.f3 Rh6 28.Kf2 Rah8 29.h4= Bb8 30.Rc2 g5=+ 31.Rhc1 gh4–/+ 32.g4 h3 33.Qh2 Nf8 34.Rc8? Ng6–+ 35.Rh8 Rh8 36.Rh1 Nf4 0–1. coloplayah (2145) – mic (2180), net–chess.com, 2006.

4.Bg2 Nc6

5.a3 Nf6 6.d3 Be7 7.Nd2 0–0 8.Ngf3 Bg4 9.0–0 Qd7 10.Re1 Bh3 11.Bh1 h6 12.c4 Nh5 13.Ne4 f5 14.Ned2 f4 15.Ne4 b6 16.Qc2 Qg4 17.b5 Na5 18.d4 ed4 19.Bd4 1–0. coloplayah (2170) – jsallidem (1990), net–chess.com, 2006.

5.Bc6 bc6 6.e4 Nf6 7.d3 Bb7 8.a3 Be7 9.Nd2 0–0 10.Ngf3 Qd7 11.Nh4 Qh3 12.Nf5 Rfe8 13.Nf3 Qh5 14.h3 g6 15.g4+– Ng4 16.Ke2?? gf5?? 17.hg4+– Qg6? 18.gf5 Qf6 19.Bc1 Kh8 20.Rh6 Qg7+/– 21.Qh1 c5?? 22.Be3+– cb4 23.Rg1 Qg1 24.Ng1 Bf8 25.Rh7 Kg8 26.Rh8 Kg7 27.Qh6 1–0. audrey – trial654, Live Game Caissa's Web, 2004.

4.Bg2 Nf6

5.c4 Nc6=+ 6.b5 ab5 7.cb5 Na7 8.a4= Rb8 9.Nc3 c6 10.Qb3 Be6=+ 11.Qc2 cb5 12.ab5+= Be7?? 13.Ra7+– 1–0. coloplayah (2175) – rar (1935), net–chess.com, 2007.

5.d3 Bd7 6.Bb7+= Ra7 7.Bg2 Be7 8.Nd2 Nc6 9.a3 0–0 10.c4 Rb7 11.b5 ab5=+ 12.cb5 Rb5 13.Qc2 Rb8 14.Ngf3= Na7 15.0–0 c5 16.Bc3 Nc6 17.Rfb1 Nd5 18.Rb8 Nb8 19.a4 Be6 20.Nc4 Nc6 21.Nfd2 Ncb4 22.Bb4= Nb4 23.Qb2 Bf6 24.Ne4 Be7 25.a5 d5–/+ 26.Nc5 Bc5 27.Ne5 Na6 28.d4 Be7 29.e3 Qa8–/+ 30.Nc4 Qd8 31.Nb6 Qd6–/+ 32.Rc1 Rb8 33.Qe2 Nb4 34.Bf1 Bd8–+ 35.Rb1 Bb6 36.ab6 Bf5 37.Ra1 Qb6 38.Qf3 Be4 39.Qh5 g6 40.Qe5 Nc6 41.Qf6 Qc7 42.Rc1 Rb6 43.g4 Qb7 44.h4 Nd8?? 45.Qd8+– Kg7 46.Rc7 Qb8 47.Qd7 Rf6+/– 48.g5 Rf5 49.Rb7 Qa8 50.Ra7 Qf8 51.Bh3 Rf3? 52.Bg4+– Bf5 53.Qd5 Bg4 54.Qe5 Kg8 55.Qe4 Qc8? 56.Ra8 Qa8 57.Qa8 Kg7 58.Qe4 Bh5 59.Kg2 Rf5 60.f4 Rb5 61.d5 Rb2 62.Kg3 Rd2 63.Qe5 Kg8 64.d6 Bd1 65.Qe7 Ba4 66.Qe5 Rd3?? 67.Qe4+– Bb5 68.Qe5 Bd7?? 69.Kf3 Bc6 70.Ke2 Rb3 71.Qd4 Rb5 72.d7 Rd5 73.Qd5! (73.Qd5 Bd5 74.d8Q Kg7 75.Qd5 Kf8 76.Qc5 Kg7 77.Qd4 Kf8 78.Qh8 Ke7 79.f5 gf5 80.Qh7 Ke8 81.h5 f4 82.Qh8 Ke7 83.Qe5 Kd7 84.ef4 Kc8 85.Qe8 Kc7 86.Qf7 Kd6 87.f5 Kc5 88.f6 Kd6 89.Qe7 Kd5 90.f7 Kc6 91.Qe6 Kc5 92.f8Q Kb5 93.Qb8 Kc5 94.Qbb6) 1–0. coloplayah (2145) – richgrady (1985), net–chess.com, 2006.

3.g3 c6

4.c4 Nd7 5.a4 a5 6.b5= d5 7.bc6 bc6–/+ 8.cd5 cd5 9.Ba3 Bb4 10.Bg2 Ngf6 11.Qc2 Bb7 12.Nf3 0–0 13.0–0 Qe7 14.Bb2 Ba6 15.Nc3 e4 16.Nd4 Rac8 17.Rfc1 Rfd8 18.Bh3 Qe5–+ 19.e3 Qh5 20.Kg2 g5 21.Bf5 Be2 22.h3 Bf3 23.Kg1 g4 24.h4 Rc4 25.Bd7 Nd7 26.d3 ed3 27.Qd3 Ne5 28.Qb1 Rd4 (29.ed4 Nc4=+; better is 28...Rdc8!? 29.Ncb5 Be4 30.Rc4 Nc4–/+) 0–1. Nissen,Hans H K – Andersen,Finn, 1. ch–DEN prel G5, 1998.

4.Bg2 a6 5.Nf3 h6 6.0–0 Be7 7.c4 g5 8.d3 g4 9.Nfd2 h5 10.Nc3 h4 11.Nde4 hg3 12.hg3 Bf5 13.Qa4 Qb6 14.Nd5 Qd8 15.Ne7 Qe7 16.b5 cb5 17.cb5 Qd7 18.Nc3 f6 19.ba6 Qa4 20.Na4 Ra6 21.Nc3 b6 22.Nd5 Ra7 23.Nb6 Rah7 24.Ba3 Nc6 25.Bc6 1–0. Wall,Bill – Jogrus, Microsoft Gaming Zone, 2000.

4.Bg2 Be6 (--> 3.g3 Be6 4.Bg2 c6).

4.Bg2 f5 5.d3 Nf6 6.Nd2 Be7 7.Ngf3 0–0 8.0–0 Be6 9.a3 Nbd7 10.Nb3 (10.Ng5 Bf7=) 10...h6 11.e3 Nh7 12.Qe2 Ng5 13.Nh4 Nh3? Black prepares f4 (better is 13...Bf6=) 14.Bh3+– Bh4 15.gh4 Qh4 16.Bg2 Rae8 (16...f4+–) 17.Na5 f4 (17...Rb8 18.f4+–) 18.Nb7 f3 (18...Bh3 19.Qf3 (19.Nd6?! Re6 20.Bh3 Qh3+/–) 19...Bg2 20.Qg2+–) 19.Bf3 Bh3 20.Bc6 Qg5 21.Kh1 1–0. pereira – anony, Blitz:4'+2, 2014.

4.Bg2 Nf6

(--> 3.g3 Nf6 4.Bg2 c6).

5.d3 Be7 6.Nd2 0–0 (--> 3.g3 Nf6 4.Bg2 Be7 5.d3 0–0 6.Nd2 c6).

3.g3 Nc6

4.a3 Be7 5.Bg2 Bf6 6.Nc3 Nh6 7.Nd5 a5 8.b5 Na7 9.c4.

4.a3 Bf5 5.Bg2 Nf6 (--> 3.g3 Nf6 4.Bg2 Nc6 5.a3 Bf5).

4.a3 Nf6 5.e3 Be7 6.Bg2 0–0 7.Ne2 Bg4 8.0–0 h6 9.f3 Be6 10.d4 ed4 11.e4 d5 12.Nd4= Nd4 13.Qd4 Re8 14.e5= Nd7 15.f4 (15.f4 c5 16.Qd2+=). willi_weizenkeim – Knight271, playchess.de, 2003.

4.b5 Na5

5.Bg2 a6 6.a4 Nc4 7.Bc3 ab5 8.d3 (8.ab5 Ra1 9.Ba1 Be7=) 8...Nb6 (8...b4 9.Bb4 Ra4 10.Bc3+=) 9.ab5= Ra1 10.Ba1 Be6 (10...Qd7!?=) 11.Bb7+= Ne7 12.c4 Qb8 (12...c6 13.bc6 Qc7 14.Nf3 Nc6 15.Bc6 Qc6 16.Nc3+=) 13.Bg2 g6 14.Nf3 Bg7 15.0–0 0–0 16.Nc3 Bf6 (16...f6 17.Qb3+/–) 17.Qc2 c6 (17...h6 18.Bb2+/–) 18.Rb1 (better is 18.bc6 Nc6 19.Rb1+–) 18...d5?? shortens the misery for Black (better is 18...cb5 19.Nb5 Nd7+/–) 19.bc6+– Nc6 20.cd5 Bd5 21.Nd5 Bd8 22.Qc6 Qa7 23.Nb6 Bb6 24.Rb6 (24.Rb6 Qa1 25.Bf1+–) 1–0. Remillard,John – Pilotte,Rick, Winnipeg Easter op, 2001.

5.Bg2 Nc4 6.Qc1 Nf6 7.d3 h5?? 8.dc4+– Bg4?! 9.h3 Bf5 10.Nd2 d5 11.Be5 Nd7 12.Bb2 dc4 13.Bb7 Rb8 14.Bc6 Bb4 15.Ngf3 Rb6?? 16.Bg7 Rg8 17.Bd4 Kf8 18.c3 Ba5 19.Qa3 Ke8 20.Qa5 Ke7 21.Qb4 Ke6 22.Qc4 Ke7 23.Bb6 Nb6 24.Qc5 Kf6 25.0–0 Bh3 26.Rfd1 Qc8 27.Ne4 Kg7 28.Neg5 Bg4 29.Qe5 Kf8 30.Nh7 1–0. coloplayah (2170) – autocage, net–chess.com, 2006.

5.Bg2 Nc4 6.Bc3 =+.

5.Bg2 c6 6.bc6= bc6 7.Bc3 Bb7 8.e3 d5 9.Be5+/– Qe7 10.Bb2 Nc4+= 11.Qc1 Nf6 12.d3 Nb6 13.Ne2 Qc7 14.Nd2 Bd6 15.0–0 0–0 16.Bf6+– gf6 17.c4 dc4 18.Nc4 Qe7 19.Nb6 ab6 20.Bc6?? Bc6?? 21.Qc6+– Rab8 22.Rab1 Rfc8 23.Qf3 Kf8 24.Nd4 Rc3 25.h4 Rd3 26.Nc6 Qb7 27.Qe2 Ra3 28.Nb8 Qb8 29.Rb5 Rc3 30.Rfb1 Bc5 31.Qb2 Qe5 32.a4 Ra3 33.Qa3! Ba3 34.Re5 fe5 35.Rb6 Bc5 36.Rb5 Bd6 37.a5 f5 38.a6 f4 39.gf4 ef4 40.a7 fe3 41.fe3 Kg7 42.a8Q Kg6 43.Qe4 Kh6 44.Qe6 Kg7 45.Rb7 Kf8 46.Qc8. 1–0, coloplayah (2145) – stefandima (1825), net–chess.com, 2006.

4.b5 Nce7

5.Nc3 b6 6.Bg2+= Rb8 7.d4 ed4 8.Qd4 Nf6 9.Rd1 g6?? 10.Ne4 Nf5 11.Nf6 Ke7 12.Nd5 Ke8 13.Qh8 (13.Qh8 Bb7 14.Qh7 Bd5 15.Bd5+–) 1–0. gtate (2305) – mic (2260), net–chess.com, 2007.

5.Nc3 d5!?=+ 6.Nf3 Qd6 7.a4 Bf5 8.Bg2 d4 9.Nb1 0–0–0 10.0–0.

5.Nc3 d5!?=+ 6.Bg2 d4 7.Ne4 f5 8.Nc5 Nd5 9.Nd3 e4 10.Nc1.

5.Bg2 f5 6.e3 Nf6 7.Ne2 Rb8 8.d4 ed4 9.Bd4+/– b6 10.0–0 Bb7 11.Nd2 Bg2+/– 12.Kg2 c5 13.bc6 Nc6+= 14.c3 Be7 15.Nf4 Qd7 16.Bf6 Bf6 17.Qc2 0–0 18.Rab1 Rbc8 19.Nd5 Bg5 20.Nf3 Bh6 21.Rfd1 g6 22.h4 Ne7 23.Qb3 Bg7?? 24.Nb6+– (24.Nb6 d5 25.Nd7 Rc3 26.Qa4+–) 1–0. coloplayah (2070) – kuksifae (2155), net–chess.com, 2006.

5.Bg2 Nf6 6.d3 g6 7.Nf3 Bd7 8.c4 Bg7 9.Nbd2 0–0 10.0–0 c6 11.Ne1 d5 12.Be5 cb5 13.cd5 Nfd5 14.Bg7+= Kg7 15.Qb3 Bc6 16.Nc2 Qa5 17.Ne4 Nf6 18.Qb2 Be4 19.de4 Nc6 20.e5 Ne8 21.Rad1 Kg8 22.Rd7 Qb6 23.e3 Ng7 24.Rfd1 Rad8 25.Bc6 bc6+= 26.R7d6 Rd6 27.ed6+= Rd8 28.Qe5 Re8 29.Qc3 a5 30.d7 Rd8+= 31.Qf6 Qc7 32.Na3 Rd7–/+ 33.Rc1 Ne6 34.Nb5= Qb6 35.Nd4 Rd6 36.Qf3 Ng5 37.Qg2 c5 38.Nb3 Ne6 39.Qf1 a4=+ 40.Nd2?? Rd2–+ 41.a3 Qb2 42.Ra1 Rf2! (42...Rf2 43.Qf2 Qa1 44.Kg2 Qa3–+) 0–1. coloplayah (2180) – cnita (1840), net–chess.com, 2006.

5.Bg2 Ng6 6.e3 Be6 7.a4 Nf6 8.Bb7+= Rb8 9.Bc6 Nd7 10.Bd7 Qd7= 11.Nc3 Be7 12.Nf3 0–0 13.0–0 Bg4–/+ 14.h3 Bh3 15.Re1 Rfe8 16.Nd5 Bd8 17.c4 c6 18.Qc1?? cb5 19.cb5 Qe6 20.e4 Nh4 21.Nh4 Bh4 22.gh4?? Qg4 23.Kh2 Qg2# 0–1. baudrey – nexus6, Live Game Caissa's Web, 2004.

4.Bg2 Nb4–/+

5.a3 Nc6 6.d4 ed4 7.Bc6 bc6 8.Qd4 c5 9.Qe4 (9.Qe4 Be6 10.Nf3–/+). yannigator (2080) – hasant (1915), net–chess.com, 2008.

5.d4 ed4 6.a3 Nc6 –/+.

5.Nf3 Bf5 6.d3 Nf6 7.0–0 c6 8.Nh4 Bd7 9.a3 Na6 10.e3 Be7 11.Nd2 0–0 12.f4 ef4–+ 13.Rf4 g5 14.Rf3 gh4 15.gh4 Bg4?? 16.Rg3=+ h5 17.h3 Qb6 18.Rb1 Qc7? 19.Qe1?? d5=+ 20.hg4 Ng4 21.Nf3 f5 22.Ng5 Bg5 23.hg5=+ Kf7 24.Rf3 Qh2 25.Kf1 Kg6 26.Rh3+= Qd6 27.Qh4+/– Rh8 28.Bh8 Rh8 29.Rb3 Nc5 30.Rb4+= a5 31.Rb2 d4 32.e4? Qf4–+ 33.Bf3?? Qc1 34.Kg2 Qb2 35.ef5–/+ Kf5?? 36.Bg4+/– Kg6?? 37.Bh5 Kg7 38.Qf2 Rf8 39.Qe2 Kg8 40.Rf3 Rf3 41.Bf3 Kf8 42.Bh5 Qa2 43.Qe8 Kg7 44.Qg6 Kf8 45.Qd6 Kg8 46.Qd8 Kg7 47.Qd4 Kg8 48.Qc5 a4 49.Qc4 Qc4 50.dc4 Kg7 51.Kf3 b6 52.Ke4 Kf8 53.Ke5 Ke7 54.c3 c5 55.Kd5 Kd7 56.g6 Ke7 57.Kc6 (57.Kc6 Kf6 58.Kb5+–; 57.g7 Kd8 58.g8Q Kc7 59.Qf7 Kc8 60.Kc6 b5 61.Qe8#) 1–0. Salvatore – master156, ChessWorld.net, 2010.

5.Nf3 Nf6 6.0–0 –/+.

(...)

4.Bg2= a6 5.d4 ed4 6.Bd4 Bc6 7.Nf3+= f6 8.c4 Ne7 9.Qb3 Nd7 10.0–0 Ng6 11.Nbd2 Be7 12.c5?? d5 13.Rfe1 0–0 14.e4 Nde5 15.Ne5 fe5 16.Bb2 Kh8 17.ed5 Bb5 18.Be5 Ne5+= 19.Re5 Bf6 20.Rae1 Be5 21.Re5 Re8 22.Rh5?? Re1–+ 23.Bf1 Qe8 24.Qc2 (24.g4 Bf1 25.Nf1–+) 0–1. var – rumrunner, Live Game Caissa's Web, 2004.

4.Bg2= Nc6 5.a3 a6 6.Nf3 Be7 7.d4 e4 8.Nfd2 d5 9.c4 Bf5 (9...Be6 10.cd5 Bd5 11.Be4+= (worse is 11.Ne4 f5–/+)) 10.Nc3 (10.cd5 Qd5 11.Nc3 Qd4+/–) 10...e3 (10...dc4!? 11.d5 e3 12.Nc4 ef2 13.Kf2 Nb8+/–) 11.fe3+/– Bg5 (11...dc4!? 12.Nc4 Bd7+–) 12.cd5 Nce7 13.e4 Bd2 (better is 13...Bg6+–) 14.Qd2 (worse is 14.Kd2 Bg6+–) 14...Bc8 15.e5 Nf5 (15...h5 16.0–0+–) 16.e4 Nh4 (16...Nfh6+–) 17.gh4 Qh4 18.Qf2 Qf2 19.Kf2 Ne7 20.d6 cd6 21.ed6 Ng6 22.Nd5 0–0 (22...Rb8 23.Rhc1+–) 23.Nb6 Be6 24.Na8 Ra8 25.e5 Nf4 (25...Rb8 26.Kg3+–) 26.Bb7 Nd3 27.Ke3 Rb8 28.Kd3 Rb7 29.Rac1 h5 30.Rc7 Bf5 (30...Rb8 31.Ke4 a5 32.Rhc1 ab4 33.d7+–) 31.Ke3 Rb8 (31...Rc7 32.dc7 Kf8 33.Rc1+–) 32.d5 a5 33.e6 fe6 34.Rg7 Kf8 35.de6 Be6 36.Rf1 Ke8 37.Re7 1–0. marekt – chymara, ChessWorld.net, 2012.

4.Bg2= c6

5.c4 a6 6.Nc3 Nf6 7.Nf3 e4 (7...Be6 8.d3=) 8.Nd4 c5 9.bc5 dc5 10.Nb3 Be7? (better is 10...Bf5!?+=) 11.Ne4+/– 0–0 12.Bf6 Bf6 13.Rb1 (13.Nf6 Qf6 14.Bb7 Ra7+–) 13...Ba4 (13...Bc6 14.Nbc5 Bd4 15.f3+/– (15.Nb7?! Qe7=)) 14.Qc1 (14.Nbc5?? Bd1 15.Nb7 Qe7 16.Rd1 Nc6 17.Nf6 Qf6–+; 14.Nf6?! Qf6 15.Bb7 Ra7+–) 14...Ra7 (better is 14...Bc6!? 15.Nbc5 Be7+–) 15.Nbc5 (worse is 15.Nf6 Qf6 16.Nc5 Bc6+–) 15...Bc6 16.Nb7! (16.Nf6?! Qf6 17.f3 b5+/–) 16...Bb7 (16...Rb7 17.Nf6 Double attack (17.Nf6 Decoy); 16...Bb7 17.Nf6 Double attack (17.Nf6 Decoy)) 17.Nf6 Qf6 18.Rb7 (18.Bb7?! Rb7 19.Rb7 Qc6+=) 18...Rb7 19.Bb7 Nd7 20.0–0 Nc5 (20...Rb8 21.Bf3+–) 21.Bd5 Re8 22.Qa3 Ne4 23.Qe3 Nd6 24.Qd3 h6 (24...Rd8 25.Rb1 Nc8 26.Qf3 Qf3 27.Bf3+– (worse is 27.ef3 Ne7+–)) 25.Rb1 Nf5 (25...Qd8 26.Qf3 Re7 27.d4+–) 26.c5 (26.Qf3 Qg6 27.Rb7 Ne7+–) 26...Nd4 27.Rb7 Ne2 28.Kg2 Nd4 (28...Kh8+–) 29.Rf7 Qe5 (29...Qf7 30.Bf7 Kf7 31.Qd4 g5+–) 30.Rf5 Qd5 31.Rd5 Ne2 32.Qg6 Rf8 (32...Rc8 33.Rd7 Nf4 34.gf4 Rc5 35.Qg7#) 33.Rd7 Nf4 34.gf4 Rf4 (34...Rf7 35.Qf7 Kh7 36.Qg7#) 35.Qg7# 1–0. usingprogram (1985) – botwin2310, internet, 2012.

5.c4 Qc7 6.a3 (6.Nf3 Nf6=) 6...Nf6 (6...Be6 7.d3=) 7.Nc3 (7.d4 Be6=) 7...Be6 8.Qc2 (8.d3 Be7=) 8...Nbd7 (8...Bc4 9.Nf3–/+) 9.Rc1 (9.d3 d5+=) 9...Bc4–/+ 10.Nd1 Bd5 (10...Be6 11.Nf3–/+) 11.Bd5 (11.Nf3 a5–/+) 11...Nd5 12.Nf3 (12.d4 N5f6–/+) 12...Be7 (12...N5f6 13.0–0–/+) 13.Ba1 (13.e4 N5f6–/+) 13...Bf6 (13...0–0 14.e4 N5f6 15.d4–/+) 14.e4 Ne7 15.Nc3 (15.Ne3 0–0–/+) 15...Qb8 (15...0–0 16.0–0–/+) 16.Ne2 (16.g4 h6–/+) 16...0–0 (16...a5 17.b5–/+) 17.d4 (17.g4 Ng6–/+) 17...Rc8 (17...d5 18.0–0–/+) 18.0–0 (18.de5 Ne5 19.Be5 Be5 20.Ne5 de5–/+) 18...b6 (18...ed4 19.Bd4 a5 20.Rfd1–/+) 19.g4 (19.de5 Ne5 20.Ne5 Be5–/+) 19...h6 (19...ed4 20.g5 Be5 21.Bd4 Bd4 22.Ned4–/+) 20.Ng3 (20.de5 Ne5 21.Be5 de5–/+) 20...c5 (20...a5 21.Rfd1–/+) 21.bc5 bc5 (21...dc5 22.de5 Ne5 23.Be5 Be5 24.Rfd1–/+) 22.d5 Nf8 (22...Qb6 23.Rb1 Qa6 24.h4–/+) 23.Nh5+= Nh7 24.Kh1 (24.Nd2 Ng6+=) 24...Kh8 (24...Qc7 25.Nd2–/+) 25.Nf6 (25.Nd2+=) 25...gf6 (25...Nf6!? 26.g5 Nfg8+=) 26.Qd2 (26.Nd2 Rg8 27.Rg1 Ng6=) 26...Ng5 27.Nh4 (27.Qe3 Qb5=) 27...Rg8 (27...Qb3!? 28.Qe1 Qa4+=) 28.f4 (28.Qe3 Nh7 29.h3 h5 30.gh5 Rg5+=) 28...Ne4= 29.Qd3 (29.Qe2 Qb3 30.Qe4 Rg4 31.Ng2 Qd5 32.Qd5 Nd5 33.fe5 fe5 34.Rcd1 Rg2 35.Rd5+=) 29...Rg4–/+ 30.Qe4 (better is 30.Ng2!? f5 31.fe5 de5 32.Ne3–/+) 30...Rh4–+ 31.Rc3 (31.Qd3 Qb7 32.Rcd1–+) 31...f5?? (better is 31...Qb7 32.Rd3 Rg8–+) 32.Qe1–/+ Rg4 33.fe5 Qb7?? (33...de5 34.Rc5 Re4 35.Qg3–+) 34.Rd3?? (better is 34.ed6 Qd5 35.Rcf3 Kh7 36.de7+–) 34...Nd5–/+ Threatening mate: Ne3 35.ed6 f6 Black prepares the advance f4 36.Rdf3 Kh7 37.Qf2 Qc6 38.Bb2 c4 39.Bc1 f4 40.Re1 Qd6 41.Qc2–/+ Rg6 42.Rg1 Rag8–+ 43.Bf4?? Nf4 44.Rfg3 Qd5 45.R1g2 Ng2 46.Rg6 Rg6 0–1. Moreau,Lionel – Estevez,Ange (1690), Salon de Provence 1st Open, 2006.

5.c4 Be6 6.d3 +=.

5.d4 ed4 6.Bd4 Nf6 7.Nc3 Be7 8.e4 0–0 9.Nf3 Re8 10.0–0 Bg4 11.Qd2 Nbd7 12.Rfe1 Nb6 13.e5 Bf3 14.ef6+– Bg2 15.fe7 Re7 16.Kg2 Nc4 17.Qf4 Re1 18.Re1 Na3 19.Qg4 f6 20.Qe6 Kf8 21.Re2 Qc7 22.Qf5 Kg8 23.Ne4 Rf8 24.Qe6 Kh8 25.Nd6 c5 26.bc5 b6 27.Nf7! Kg8 28.Nd6 Kh8 29.Qe8! Qb8 30.Qb8 Rb8 31.cb6 ab6 32.Bb6! h6 33.Bc5 Nb1 34.Re8 Re8 35.Ne8 (35…Kg8 36.a4+–) 1–0. 5352 – bueno, Live Game Caissa's Web, 2004.

5.Nf3 Nf6 =.

4.Bg2= Bc6

5.Nf3 a5 6.a3 =.

5.Nf3 a5 6.b5 Bb5 7.d4 +=.

5.Nf3 a6 6.0–0 Be7 (6...Nf6 7.c4=) 7.a4 Nf6 8.c4 Bd7 (8...0–0 9.Nc3=) 9.d4+= White gets in control 9...ed4 10.Nd4 Nc6 11.b5 ab5 12.ab5 Nd4 13.Bd4 (13.Ra8 Nf3 14.Bf3 Qa8+=) 13...Ra1= 14.Ba1 Qc8 15.Qd4 (15.Bd4 0–0+=) 15...Bh3+= 16.Qe3 (16.Nc3 Bg2 17.Kg2 0–0+=) 16...Bg2= 17.Bf6 (better is 17.Kg2 Qe6 18.Qf3=) 17...gf6 (better is 17...Qe6 18.Qe6 fe6 19.Kg2 Bf6+=) 18.Kg2+/– Qe6 19.Qd3 h5 (19...Bd8 20.Nc3+/–) 20.h3 (20.Nc3 h4 21.Nd5 Kd7+/–) 20...f5 21.Nc3 Rg8 (21...h4!?+=) 22.Ra1+/– b6 (22...Kd7 23.c5 Rd8+–) 23.Nd5 Bd8 24.Ra8 Kd7 25.c5! Qe4 (25...dc5 26.Nf6 A double attack) 26.Qe4 fe4 27.cb6 (better is 27.c6 Ke6 28.Nc7 Bc7 29.Rg8+–) 27...cb6 28.Nb6! Kc7 (28...Bb6 Exploits the pin 29.Rg8) 29.Nc4 Kb7 (29...d5 30.Ne3+–) 30.Ra6 (30.Ra6 d5 31.Nd6 Kb8 32.Nf7+–) 1–0. Man Yee,Chow (2285) – Morihama,Nicolau, Paulisto–ch Clas3, 1999.

5.Nf3 e4 6.Nd4+= d5 7.b5 Bd7 8.c4 c6 9.cd5 cd5 10.0–0 Nf6 11.d3 Bc5 (11...Qc8 12.Nd2 Bh3 13.Rc1+/–) 12.de4+/– de4 13.Nc3 Bd4? (better is 13...Qe7+/–) 14.Qd4+– 0–0 (14...Bg4 15.Ne4 Qd4 16.Bd4 Ne4 17.Be4+–) 15.Rfd1 (15.Ne4 Bc8 16.Qd8 Rd8+–) 15...Qb6 16.Ne4 Qd4 17.Rd4 a5 (17...Ne4 18.Be4 Bb5 19.Bb7 Nc6+–) 18.Nf6 gf6 19.Rad1 Ra7 (19...a4 20.Rd7 Nd7 21.Rd7+–) 20.Rd7 Nd7 21.Rd7 1–0. marekt – michael60, gameknot.com, 2013.

5.Nf3 Be7 6.0–0 Bf6 7.Nc3 a6 8.a4 Ne7 9.b5 ab5 10.ab5 (worse is 10.Nb5 0–0+=) 10...Ra1 11.Qa1 Bd7 12.Qa4 0–0 13.Ne4 Nd5 14.d3 (14.d4 ed4 15.Nd4 Be5+=) 14...Nb6 15.Nf6 Qf6 16.Qb4 Nd5 (16...Be6 17.Nd2+=) 17.Qb3 c6 18.bc6 Bc6 19.e4 Nc7 20.Qb6 Ne6 21.Qb4 Rd8 22.Ra1 Na6 23.Qc4 Nec7 24.d4 Be4? (better is 24...Re8+=) 25.de5+– de5 (25...Qg6 26.ed6 Ne8 27.Ne5 Nd6 28.Qd4+– (28.Ng6?! Nc4 29.Ne7 Kf8 30.Bg7 Kg7 31.Be4 Nc5+/–)) 26.Qe4 Nc5 27.Qe3 Nd7 (27...N7e6 28.Be5 Qg6 29.Nd4+–) 28.Ne5 Re8 29.f4 (worse is 29.Nd7 Qb2 30.Qc1 Qb4+–) 29...b6 (29...b5+–) 30.Ra7 (30.Nd7?! Qb2 (30...Re3?? 31.Bf6 gf6 32.Nb6+–) 31.Qa3 Qd4 32.Kf1 Qd7=) 30...Qd6 31.Qd4 (better is 31.Qd3 Qc5 32.Bd4 Qd6+–) 31...Qd4 32.Bd4 Ne5 33.Rc7 Ng4 34.Bd5 Nh6 35.Bb6 Rd8 36.c4 Kh8 37.Bf7 Nf7 38.Rf7 Rd1 39.Kf2 Kg8 40.Rc7 h5 41.h3 Rd3 (41...g6 42.Be3+–) 42.Be3 g6 43.c5 Rc3 44.c6 Kf8 45.Bd4 Rc2 46.Ke3 Ke8 47.Ke4 Rg2 (47...h4 48.gh4 Rc1 49.Kd5+–) 48.Ke5 Kd8 49.Rd7 Kc8 50.Bb6 Re2 51.Kd6 Rd2 52.Ke6 Re2 53.Kf7 1–0. marekt – dcbrotha76, ChessWorld.net, 2012.

5.Nf3 Nf6 6.0–0 Be7 (6...a5 7.ba5 Be7 8.c4=) 7.d3 (7.c4 0–0=) 7...0–0 (7...a5 8.ba5 Ra5 9.Qd2+=) 8.a4 (8.c4 a6=) 8...a6 9.c4 b6 (9...Bd7 10.Qd2=) 10.b5 (10.a5 ba5 11.Ra5 Bb7=) 10...Bb7 11.Nc3 Nbd7 12.Nd2 (12.d4 Re8=) 12...Bg2 (12...Qc8 13.f4=) 13.Kg2 Nc5 (13...Re8 14.Qc2=) 14.Ba3 (14.Nb3 ab5 15.ab5 Ra1 16.Ba1 Re8=) 14...d5 15.Bc5 Bc5 16.Qb3 d4 17.Nce4 (17.Nd5 Bd6+=) 17...Ne4 (17...Nd7 18.a5 ba5 19.Ra5+=) 18.Ne4 Qe7 (18...Be7 19.Rfb1+=) 19.a5= ab5 (19...ba5 20.Ra5 ab5 21.Ra8 Ra8 22.cb5=) 20.Qb5+= Rfb8 21.a6 Ra7 (21...Ba3 22.Rfb1=) 22.Rfb1 (22.Nc5 Qc5 23.Qc5 bc5+/–) 22...Rba8 23.Nc5 bc5 24.Qc6 (24.Ra5 Qd8+/–) 24...Qd6 (24...Qf6!? 25.Qc5 h6+=) 25.Qd6 cd6 26.Rb6 Kf8 (26...Rd8 27.g4+/–) 27.Rd6 Ke7 28.Rd5 (28.Rb6 Kd7+/–) 28...Ra6 (28...Kf6 29.Ra5 Ra6 30.Rac5+/–) 29.Ra6 Ra6 30.Rc5 (30.Re5 Kd6 31.Rd5 Kc6+/–) 30...Kd6 31.Rb5 Ra2 32.Kf3 (32.Rb7 Ke6 33.Kf3 h5+/–) 32...Rc2 (32...f5 33.e3 de3 34.Ke3 f4 35.gf4 ef4 36.Kf3+–) 33.Rd5 (33.e3 de3 34.Ke3 h5+/–) 33...Ke6 34.Rc5 (34.Ra5 f5+/–) 34...h5 (34...f5 35.Rc6 Kd7 36.Ra6+/–) 35.e3 (35.h3 f5+/–) 35...de3 (35...Rc3 36.Rc6 Kd7 37.Ra6 Rd3 38.Ke4+=) 36.Ke3+/– f5 (36...f6 37.Rc7 g6 38.Ra7+/–) 37.h4 (37.f4 ef4 38.Kf4 g6+/–) 37...g6 (37...Rc3 38.Rc6 Ke7 39.f3+/–) 38.Rc6 Kf7 39.c5 Kg7 (39...Rc3 40.Kd2 Ra3 41.Rd6+–) 40.Rc7 (40.f4 e4 41.de4 fe4 42.Ke4 Rc3+–) 40...Kf6 41.c6 Ke6+/– 42.Rg7 Kf6= 43.Rc7 Ke6+– 44.Rc8 Kd6 45.Rg8+– Rc6 46.Rg6 Kd5 47.Rg5 Rf6 48.Rh5 The passed pawn on h4 will quickly become a dangerous weapon 48...f4 49.gf4 Rf4 50.Rh8 Ra4 51.f3 Rf4 52.h5 Rh4 53.h6 Ke6 54.Rh7 Kf6 55.Rh8?? Kg6?? 56.h7+– Kg7 57.Re8 Kh7 58.Re5 Kg6 59.Re4 Rh1 60.d4 Kf5 61.Re5 Kf6 62.Ke4 Rd1 63.Rc5 Re1 64.Kf4 Rd1 65.Rc6 Ke7 66.Ke5 Re1 67.Kd5 Rd1 68.Rc3 Rf1 69.Rd3 Kd7 70.Re3 Rf2 71.Ke5 Ke7 72.d5 Rd2 73.f4 Kd7 74.f5 Ke7 75.Re4 Rd1 76.f6 Kd7 77.Rd4 White prepares d6 77...Re1 78.Kf5 Rf1 79.Kg6 Ke8 80.Re4 Kf8 81.d6 Rd1 82.Rc4 Rg1 83.Kf5 Rf1 84.Ke5 Re1 85.Re4 Rd1 86.Ke6 Ke8 87.f7 Kf8 88.d7 Rd2 89.Re5 Rd1 90.Rd5 1–0. Schlagenhaufer,Johannes – Gogeissl,Christian, Oberpfalz–ch, 2000.

5.Nf3 Nf6 6.c4 a6 7.Nc3 b5 8.d3 Nbd7 9.0–0 Rb8 10.Qb3 Be7 11.Rfc1 bc4 12.dc4 0–0 13.a4 White prepares b5 13...Qe8 14.b5 Nc5 15.Qc2 Bb7 16.Ba3 Ncd7 17.Ng5 Bg2 18.Kg2 a5 19.Nd5 Nd5?? (better is 19...h6 20.Nf3 Bd8+=) 20.Qh7 1–0. Macedo,A Soares De (1845) – De Freitas,E Cristina, Championship Potiguar Absoluto, 2013.

5.Nf3 Nf6 6.c4 Be7 7.b5 Bd7 (better is 7...Bf3!? 8.Bf3 c6=) 8.Ne5!+/– c6 (8...de5 9.Bb7 Combination) 9.bc6 Nc6 10.Nd7 Qd7 11.Nc3 0–0 12.0–0 Rab8 13.f4 Na5 14.d3 b6 15.Qd2 a6 16.Nd5 Nd5 17.Bd5 Nc6 18.e4 Rfe8 19.e5 (19.Rab1 Bf8+–) 19...de5 (19...b5 20.Rab1+/–) 20.fe5+– (20.Be5?! Rbd8 21.a3 b5+/–) 20...Nd8 21.Qf4 Rf8 22.Rae1 Ne6 23.Qg4 Rbd8 24.h4 (24.d4 b5+–) 24...b5 25.Kg2 bc4 26.dc4 Rb8 (26...Bc5 27.h5+/–) 27.Bc3 Rb6 28.Rd1 g6 (28...Qa4!?+/–) 29.h5 g5?? (better is 29...Qa4 30.Rd2 Bc5+–) 30.Be4 Qc8 (30...Qa4 31.Qf5 Nf4 32.gf4+–) 31.Qf5 (31.Qf5 Nf4 32.gf4 Qf5 33.Bf5+–) 1–0. Stolarczyk,Anna (1900) – Derdzinska,Magdalena, Elk Poland, 2000.

5.Nf3 Nf6 6.d3 Ng4 7.c4 f5 8.b5 Bf3 9.Bf3 Qc8 10.e4 Nh6 11.0–0 fe4 12.Be4 Nd7 13.f4 ef4 14.Qh5 Kd8 15.Qg5 Nf6 (15...Ke8 16.Re1 Ne5 17.Be5 Be7 18.Qh5 Kf8 19.Bf4 Ng4+–) 16.Bf6 Be7 (16...gf6 17.Qf6 Kd7 18.Qh8+–) 17.Be7 (17.Be7 Kd7 18.Bf6+–) 1–0. usingprogram (2020) – moskwa27, kurnik, 2013.

5.Nf3 g6 6.c4+= a6 (6...Nf6 7.0–0+=) 7.Nc3 (7.0–0 Nf6+=) 7...b5 (7...Bg7 8.0–0+=) 8.cb5 White fights for the Initiative 8...ab5 9.a4 ba4 10.b5 Bb7 11.Na4 (11.0–0 c6 12.Ra4 cb5 13.Ra8 Ba8+=) 11...Nd7 (11...g5 12.d4+=) 12.Qb3 (better is 12.0–0+=) 12...Bg7? (better is 12...Rb8!?+=) 13.Ne5!+– Be5 (13...Ne5 14.Bb7) 14.Bb7 Rb8 15.Bd5 Nh6 (15...Qf6 16.d4 Bd4 17.Bd4 Qd4 18.Bf7 Kf8 19.0–0+–) 16.Be5 (16.d4 Bg7+–) 16...Ne5 17.d4 Nd7? (17...c6 18.Bg2 Qa5 19.Qc3 Nc4 20.Qa5 Na5 21.bc6 Nb3+–) 18.Qe3 Qe7 19.Qh6 Rb5 20.Nc3 (20.Nc3 Rb8 21.Ra7+–) 1–0. Michelena,R – Piccioni,M, Vitinia op 9th, 1997.

3.g3 Nd7

4.Bg2 c6 5.Nf3 f5 6.0–0 Ngf6 7.c4 Be7 8.d3 0–0 9.Nbd2 f4 10.Qb3 Kh8 11.Ng5 Nh5 12.Ne6+/– Qe8? 13.Nc7+– Qf7 14.Na8 Ndf6 15.Bf3 Qg6 16.Kh1 Bh3 17.Bh5 Qh5 18.Rfe1 Ng4 19.Ne4+/– Ra8 20.d4 d5 21.cd5+/– Qf5 22.f3+– Ne3 23.dc6 Bb4?? 24.g4 Qf8 25.Bc3 Be7?? 26.cb7+– Rb8 27.Rab1 Bh4 28.Nd6 h6?? 29.Bb4 Qf6 30.de5 Bg2 31.Kg1 Bf2 32.Kf2 Qh4 33.Kg1 Qh3 34.Ne4 Bf1!–/+ (34...Bf1 35.Qg8 Rg8 36.b8Q Qg2) 0–1. coloplayah (2085) – jbudau (1960), net–chess.com, 2006.

4.Bg2 Ngf6 (--> 3.g3 Nf6 4.Bg2 Nbd7).

3.g3 f5

4.d3 Nc6 5.a3 =+.

4.d3 Nf6 5.Nd2 Nc6 6.b5 Ne7 7.Bg2 g6 8.e4 Bg7=+ 9.Ne2 0–0 10.0–0 Qe8 11.c4 Qf7 12.ef5 Nf5=+ 13.Qb3 Kh8 14.a4 g5 15.Rae1= Rb8 16.d4+= Nd7 17.de5 Ne5 18.f4+/– gf4 19.Rf4 Qg6 20.Nf3 Be6 21.Ne5 de5= 22.Re4 Nd6 23.Nf4 Rf4 24.gf4 Ne4 25.Re4 ef4 26.Bg7 Kg7 27.Qc3 Qf6 ˝–˝. Vidonyak,Nellya (2280) – Meier,Annemarie Sylvia (2245), BL, 2002.

4.d3 g5 5.h3 h5 6.Nf3 Qf6 7.Nc3 g4 8.Nd2 f4 (8...h4 9.e4=) 9.gf4 Qf4 10.Nde4 Nc6 11.Nd5 Qf7 12.c4 Be6?? (better is 12...Bh6+=) 13.Ng5+– Bd5 14.Nf7 Kf7 (14...Bf7 15.hg4 0–0–0+–) 15.cd5 Nb4 16.hg4 h4 (16...Nf6 17.g5 Nfd5 18.a3+–) 17.Qb3 c5 (17...a5 18.a3 Na6 19.Qb7+–) 18.dc6 (18.dc6 Kg6 19.cb7+–) 1–0. usingprogram (2005) – smaxmm, internet, 2013.

4.Bg2 Bd7?? 5.Bb7+– Nc6 6.Ba8 Qa8 7.Nf3 Nb4 8.0–0 Ba4 9.d4 Qc6 10.de5 Nc2 11.Nc3 Na1 12.Qa4 Qa4 13.Na4 Nc2 14.Rc1 Nb4 15.Rc7 de5 16.Ne5 Nd5 17.Rc8 Ke7 18.Ba3 Ke6 19.Rf8 Ke5 20.Bb2 (20.Bb2 Ke6 21.Bg7+–) 1–0. Blumberg – Budzul, email 4AMM–09, 1997.

4.Bg2 g5 5.e4= f4 6.Qh5 Kd7 7.Bh3+– Ke7 8.Qg5 Nf6+/– 9.gf4 ef4?? 10.Bf6 (10.Bf6 Kf7 11.Bd8+–) 1–0. Harnas (1800) – corint, internet, 2007.

4.e3

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 f5 4.g3).

4.e3 Nf6 5.Bg2 Be7 6.Ne2 0–0 7.0–0 (--> 4.Bg2 Nf6 5.e3 Be7 6.Ne2 0–0 7.0–0).

4.Bg2 Nf6

5.a3 a5 A) 6.Nf3 A1) 6...ab4 7.ab4 Ra1 8.Ba1 e4 9.Nd4 d5 10.Bc3=; A2) 6...Be7 7.0–0 (7.b5 e4 8.Nd4 c5 9.bc6 bc6 10.c4=; 7.d3 e4 8.Nd4 d5 9.b5 c5 10.bc6+=) 7...ab4 8.ab4 Ra1 9.Ba1 0–0 10.d3=; A3) 6...e4 7.Nd4 ab4 8.ab4 Ra1 9.Ba1 d5 10.Bc3=; B) 6.Nh3 B1) 6...c6 7.0–0 (7.f4 e4 8.ba5 Be7 9.Bc3 0–0 10.d3+=; 7.c4 ab4 8.ab4 Ra1 9.Ba1 Qb6 10.Qa4=) 7...Qb6 8.d4 Nbd7 9.de5 de5 10.c3=; B2) 6...Be7 7.b5 (7.0–0 0–0 8.c4 ab4 9.ab4 Ra1 10.Ba1=; 7.c4 Be6 8.Qb3 ab4 9.Bb7 Ra7 10.Bg2=) 7...c6 8.c4 0–0 9.Nc3 Be6 10.d3=; B3) 6...ab4 7.ab4 Ra1 8.Ba1 c6 9.f4 e4 10.Bd4+=; C) 6.b5 C1) 6...Be7 7.c4 (7.Nh3 0–0 8.c4 c6 9.Nc3 Be6 10.d3=; 7.Nf3 e4 8.Nd4 c5 9.bc6 Nc6 10.e3=) 7...0–0 8.Nh3 Nbd7 9.0–0 Qe8 10.d4=; C2) 6...Nbd7 7.c4 (7.Nf3 Be7 8.0–0 Nb6 9.d3 e4 10.Nfd2=; 7.Nh3 d5 8.0–0 Bd6 9.Ng5 Nb6 10.f4+=) 7...Be7 8.Nf3 0–0 9.0–0 e4 10.Nd4=; C3) 6...c6 7.Nc3 (7.f4 Qb6 8.Nc3 cb5 9.e3 Nc6 10.Qe2+=; 7.c4 Be6 8.Qa4 Nfd7 9.bc6 bc6 10.d3+=) 7...d5 8.e3 Be7 9.Nge2 d4 10.ed4=.

5.a3 c6 A) 6.Nf3 A1) 6...Be7 7.c4 (7.d3 a5 8.c4 0–0 9.b5 cb5 10.cb5=; 7.0–0 0–0 8.c4 e4 9.Nd4 c5 10.Nc2=) 7...e4 8.Nd4 c5 9.Nc2 0–0 10.d3=; A2) 6...Nbd7 7.c4 (7.0–0 Be7 8.c4 0–0 9.Nc3 Qe8 10.Rb1=) 7...Nb6 8.d3 Be7 9.0–0 0–0 10.Nc3=; A3) 6...a5 7.0–0 (7.d3 ab4 8.ab4 Ra1 9.Ba1 e4 10.Nd4+=; 7.ba5 Qa5 8.Bc3 Qa4 9.Bb2 Qb5 10.Qc1+=) 7...Qb6 8.c3 Be7 9.d3 ab4 10.ab4=; B) 6.f4 B1) 6...a5 7.fe5 (7.ba5 Qa5 8.Bc3 Qc7 9.Nf3 e4 10.Nd4+=; 7.b5 Qb6 8.Nc3 cb5 9.Nh3 e4 10.e3–/+) 7...de5 8.Be5 ab4 9.ab4 Ra1 10.Ba1=; B2) 6...ef4 7.gf4 d5 8.Nf3 Bd6 9.e3 b5 10.Nd4=; B3) 6...e4 7.Nc3 (7.e3 d5 8.Ne2 Be7 9.Nbc3 0–0 10.0–0+=; 7.Nh3 a5 8.c4 d5 9.cd5 Nd5 10.ba5+=) 7...d5 8.e3 b5 9.Nge2 a5 10.ba5+=; C) 6.Nh3 C1) 6...Be7 7.c4 (7.0–0 a5 8.ba5 Qa5 9.c4 0–0 10.d4+=; 7.d4 e4 8.c4 a5 9.d5 ab4 10.ab4=) 7...0–0 8.0–0 Be6 9.Qc2 Ng4 10.d4=; C2) 6...Nbd7 7.c4 a5 8.Qc2 g6 9.b5 cb5 10.cb5=; C3) 6...a5 7.0–0 (7.f4 e4 8.ba5 Be7 9.Bc3 0–0 10.d3+=; 7.c4 ab4 8.ab4 Ra1 9.Ba1 Be6 10.Na3+=) 7...Qb6 8.d4 Nbd7 9.de5 de5 10.c3=.

5.a3 Be7 A) 6.c4 A1) 6...0–0 7.Nc3 (7.Nh3 Nbd7 8.0–0 a5 9.d4 c6 10.Nd2=; 7.d4 e4 8.Nh3 d5 9.c5 a5 10.0–0=) 7...c6 8.Nf3 e4 9.Nd4 a5 10.b5=; A2) 6...c6 7.Nf3 (7.d3 a5 8.Nf3 0–0 9.b5 cb5 10.cb5=; 7.Nh3 a5 8.b5 Be6 9.Qc2 cb5 10.cb5=) 7...e4 8.Nd4 c5 9.Nc2 0–0 10.d3=; A3) 6...a5 7.Nf3 (7.Qa4 Nbd7 8.Nf3 0–0 9.0–0 e4 10.Nd4+=; 7.b5 0–0 8.d3 c6 9.Nf3 cb5 10.cb5=) 7...0–0 8.0–0 e4 9.Nd4 ab4 10.ab4=; B) 6.d3 B1) 6...a5 7.c4 (7.b5 0–0 8.c4 c6 9.Nf3 cb5 10.cb5=; 7.Nf3 e4 8.Nd4 d5 9.b5 c5 10.bc6+=) 7...0–0 8.b5 Qd7 9.Nf3 c6 10.Nc3=; B2) 6...0–0 7.Nh3 (7.Nf3 e4 8.Nfd2 d5 9.c4 c6 10.cd5=; 7.c4 a5 8.b5 c6 9.Nf3 cb5 10.cb5=) 7...c6 8.0–0 Qb6 9.c4 a5 10.Qb3=; B3) 6...c6 7.c4 (7.Nf3 a5 8.0–0 Qb6 9.c4 ab4 10.Qb3+=) 7...a5 8.b5 0–0 9.Nf3 cb5 10.cb5=; C) 6.Nh3 C1) 6...0–0 7.0–0 (7.d4 e4 8.d5 Ng4 9.0–0 Bf6 10.Bf6=; 7.c4 Nbd7 8.0–0 c6 9.Qc2 Nb6 10.d4=) 7...a5 8.c4 c6 9.d4 e4 10.d5=; C2) 6...a5 7.d4 (7.0–0 c6 8.ba5 Qa5 9.c4 0–0 10.d4+=; 7.b5 0–0 8.0–0 c6 9.c4 Be6 10.d3=) 7...e4 8.d5 0–0 9.0–0 Nbd7 10.Nf4=; C3) 6...c6 7.d4 (7.0–0 a5 8.ba5 Qa5 9.c4 0–0 10.d4+=; 7.c4 a5 8.b5 Be6 9.Qc2 cb5 10.cb5=) 7...e4 8.c4 a5 9.d5 ab4 10.ab4=.

5.c4 a5 6.b5 (6.Qa4 Nbd7=) 6...Nbd7 (6...Be7 7.Nf3=) 7.e3 (7.Qc2 Nc5=) 7...Be7 (7...e4 8.d4+=) 8.Ne2 (8.d3 e4+=) 8...0–0 (8...e4 9.f3+=) 9.0–0 (9.d3 Nc5=) 9...Nb6 (9...e4 10.d3+=) 10.d3= a4 11.Na3 d5 Black prepares the advance e4 12.Rc1 (12.cd5 Nbd5 13.Nc4 e4=) 12...dc4 (12...Re8 13.c5 Nbd7 14.d4=) 13.Nc4 Nc4 14.dc4 Qd1 (14...e4 15.Nf4=) 15.Rfd1 e4 16.Nf4 g5 (16...Rd8 17.Rd8 Bd8 18.a3+=) 17.Ne2 Nd7 18.Rc2 (18.Rc2 Nc5 19.Nc3=). Ten Bos,Heen – De Visser,Arnold W, corr ICCF TT–4–90 SF, 1993.

5.d3 c6 6.Nd2 g6 7.c4 (7.Ngf3 Na6+=) 7...Bg7 (7...Na6 8.b5 cb5 9.cb5+=) 8.Ngf3 0–0 (8...Qe7 9.0–0+=) 9.Qb3 Kh8 (9...Nbd7 10.0–0+=) 10.0–0 (10.c5 e4 11.Ng5 ed3 12.Qd3 h6=) 10...Qe7+= 11.Rad1 (11.e4 fe4 12.de4 Na6+=) 11...Be6 12.Ng5 Bg8 13.e4 f4 14.Ngf3 (14.d4 Nbd7+=) 14...Nh5 (14...Nbd7 15.gf4 ef4 16.Rfe1+=) 15.d4 (15.Qa3 Nd7+=) 15...Nd7 16.d5 (16.de5 de5 17.Bh3 fg3 18.hg3 Rad8+=) 16...c5 (16...a5 17.a3+=) 17.a3 g5 (17...Bf7!?+=) 18.Bh3+/– h6 (18...cb4 19.ab4 Rfd8 20.Bf5+–) 19.Bd7+– Qd7 20.bc5 Bh7 (20...g4 21.Nh4 Bh7 22.cd6 Qd6+–) 21.cd6 Rae8 (21...Qd6 22.c5 (22.Qb7?! Rab8 23.Qa7 Rb2+=) 22...Qc5 23.Be5+– (23.Ne5?! fg3 24.hg3 Qb6+–; 23.Qb7? Rab8 24.Qc6 Qc6 25.dc6 Rb2–+)) 22.c5 g4 23.Ne1 fg3 (23...b6 24.c6 Qd6 25.Nd3+–) 24.hg3 Nf6 (24...b6 25.c6 Qd6 26.Nd3+–) 25.Qe3 Bg6 (25...Qb5 26.Ba1+–) 26.Nd3 Nh7 27.Nc4 Ng5 (27...Rf3 28.Qe2 Rd3 29.Rd3+–) 28.Nde5 Re5 29.Ne5 Be5 30.Be5 Kh7 (30...Kg8 31.Bf4 Nf3 32.Kg2+–) 31.Bf4 Ne4 (31...Nf3 32.Kg2+–) 32.Rc1 (32.Rc1 Ng5 33.Bg5 hg5 34.Qg5+–) 1–0. marekt – UncleBulgaria, ChessWorld.net, 2015.

5.d3 Be7 6.Nf3 0–0 7.0–0 a6 8.c4 =.

5.d3 Be7 6.Nd2 0–0 7.e3 Kh8 8.Ne2= c6 9.a4 Be6 10.c4 Nbd7 11.d4 Qc7 12.0–0= Rae8 13.Qc2 a5 14.ba5. THEGREENMILE – Kimura, playchess.de, 2001.

5.d3 Be7 6.Nf3 0–0 7.0–0 c6 8.Nbd2 Be6 9.c4 Nbd7 10.Ng5 Bf7 11.Nf7 Rf7 12.Qb3 Rc8 13.a4 Rf8 14.b5 Kh8 15.Kh1 Qe8 16.d4 Qh5 17.de5 de5 18.Nf3 Ng4 19.h3 e4 20.Nh2 Nh2–/+ 21.Kh2 Qe2 22.Rae1 Qh5–/+ 23.Qd1 Qd1–+ 24.Rd1 Nc5 25.Ba3–/+ Rfe8 26.f3 e3 27.Rfe1–/+ Na4 28.Re3 Bf6 29.Re8=+ Re8 30.f4 cb5–/+ 31.cb5 Nc3 32.Rd7 Nb5 33.Bb4 b6 34.Bf1 a5 35.Bb5 ab4 36.Rb7 Ra8 37.Rb6 b3 38.Be2? b2–+ 39.Kg2 g6 40.Kf1?? Kg7 41.Rb7 Kh8 42.g4?? Rc8 43.Bd3–/+ fg4 44.hg4 Bg7 45.f5 Rf8 46.Ke2 gf5–+ 47.gf5 h5 48.Kf3 ˝–˝. Jew,Harold (1835) – Haley,Phil (1795), Toronto Thanksgiving op U2100, 2002.

5.d3 Be7 6.Nf3 0–0 7.0–0 Kh8 8.c4+= Qe8 9.Nc3 c6 10.e4 (10.b5!?+/–) 10...Na6= 11.a3 fe4 12.de4 Be6 13.Qe2 Qh5 14.Nd2 (14.Rfd1 Nc7=) 14...Qh6 15.Bc1 g5 (15...Qh5!?=) 16.Nf3 Ng8 (16...Nd7 17.h4 Qh5 18.Bg5 (18.hg5? Bg4–+) 18...Bg5 19.Ng5 (worse is 19.hg5 Bg4–+) 19...Qe2 20.Ne2 Bc4 21.Rfe1=) 17.Nh4 Qf6 18.Nf5 Qf7 19.Ne3 (worse is 19.Ne7 Bc4 20.Qd2 Bf1 (20...Ne7?! 21.Rd1=; worse is 20...Qe7 21.Rd1+=) 21.Bf1 Ne7–/+) 19...Nf6 20.Ncd1 (20.Bb2 h5+/–) 20...Nd7 (20...Bd8 21.Ra2+=) 21.Bb2 Nb6 22.Rc1 Bf6 23.f3 Bg7 24.Nf2 Nc7 25.Rfd1 Rad8 26.Qc2 Rd7 27.Nd3 Kg8 28.a4 Rfd8 29.a5 (29.Rd2 Nc8+/–) 29...Nc8+/– 30.Rf1 Ne7 31.f4 (31.Qe2!?+/–) 31...gf4+= 32.gf4 Bh6 33.Qf2 ef4 34.Nf4 Ng6 35.Ne6 Qf2 36.Kf2 Be3? (better is 36...Ne6 37.Rc2 Ne5+=) 37.Ke3+– Ne6 38.Bh3 Re8 39.Rcd1 d5 (39...Rde7 40.Bf6 (40.Rd6?! Ng5 41.Bf5 Ne4 42.Be4 Re4 43.Kd3 Ne5 44.Be5 R4e5=) 40...Rd7 41.Bg4+–) 40.cd5 cd5 41.Rf6 (41.Rd5?! Rd5 42.ed5 Nef4 43.Be6 Ne6 44.de6 Re6 45.Kd2 Re4=) 41...d4 42.Bd4 Rd4 43.Re6 Rd1 44.Re8 Kg7 45.Rb8 Ne5 (45...Re1 46.Kd4 Rd1 47.Kc4 Rc1 48.Kb5+–) 46.Rb7 Kf6 47.Rh7 Rd3 48.Ke2 Rb3 49.Bf5 (49.Ra7?! Rh3 50.Ra8 Rh2 51.Ke3 Rb2 52.Ra6 Ke7+–) 49...Rb4 (49...Nf7 50.h4 Rb4+–) 50.h3 (better is 50.Ra7 Rb2 51.Ke3 Rh2 52.a6+–) 50...Nf7+/– 51.a6 Ra4 52.Bc8 (52.e5 Ne5 53.Bc2 Rc4+–) 52...Re4 53.Kd3 Ra4 54.Rh5 Ne5 55.Kd2 Nc4 56.Kc3 Nd6 57.Rh6 Ke5 58.Bb7 Rc4 59.Kd3 Rb4 (59...Rc7 60.Rh5 Kf4 61.Bg2+=) 60.Rh7 Rb3 61.Kc2 Rb6 62.Rh5 (62.Kc3 Nf5+/–) 62...Kf4 63.Rh7 Nb7 (better is 63...Ke5!?=) 64.ab7+/– (64.Rb7?! Ra6 65.Kc3 Ke5=) ˝–˝. Valenta,Vit (2130) – Marjanovic,Dejan (2370), Tromso NOR, 2014.

5.e3 a5 6.ba5 Nc6 7.a6 Ra6 8.Ne2 Be6 9.0–0 Ra2 10.Ra2 Ba2 11.Nbc3 Bf7 12.Qa1 Be7 13.Bc6 bc6–/+ 14.Qa6 Qd7 15.Qa8 Bd8 16.Ra1 0–0 17.f4 e4 18.Qa4 c5 19.Qd7=+ Nd7 20.Nb5 Bc4 21.Nec3 Nb6 22.Ra7 d5 23.Nc7 d4 24.N3b5=+ Bf6 25.ed4= Rb8 26.Nd6 Nc8=+ 27.Ra8? Ra8–+ 28.Na8 Nd6 29.c3 cd4 30.cd4 Nb5 31.Nb6 Bd3 32.Nd5 Bd4 33.Bd4 Nd4 34.Kf2 Nf3 35.Ne7 Kf7 36.Nf5 Nh2 37.Ne3 h5 38.Kg2 Ng4 39.Kh3 Ne3 40.de3 Kf6 41.g4 hg4 42.Kg4 g6 43.Kh4 Kf5 44.Kg3 Be2 45.Kh4 Bh5 46.Kg3 Ke6 47.Kh4 Kd5 48.Kg3 Kc4 49.f5 gf5 (49...gf5 50.Kf4 Bg6–+) 0–1. coloplayah (2180) – zedd (2000), net–chess.com, 2006.

5.e3 c6 6.c4 Be6 7.d3 Nbd7 8.Ne2 (8.Nf3 d5 9.c5 e4=) 8...Qc7 (8...d5 9.c5+=) 9.Nd2 Be7 10.0–0 0–0 11.d4 Rad8 12.a3 g5 (12...Rfe8 13.Qc2=) 13.h3 (13.Rc1 d5=) 13...Rf7 (13...g4 14.hg4 fg4 15.Rc1=) 14.f4 (14.Rc1 Qb6+=) 14...Rg7 (14...gf4 15.de5 de5 16.ef4=) 15.fg5 (15.fe5 de5 16.de5 Ne5+/–) 15...Rg5+= 16.h4 (16.Rc1 Qb6+=) 16...Rg6= 17.Rc1 Qb8 18.e4 f4 19.d5 (19.Rc3 fg3 20.Rg3 b5=) 19...Bg4+= 20.Qe1 (20.gf4 Bh3 21.dc6 bc6 22.Rf2–+) 20...Be2 21.Qe2 Rg3 Opening the g–file gets Black a lot of play 22.Rf3 (22.Rc3 Rg4–/+) 22...Rg7 23.Rh3 Ng4 Black begins to deal mighty blows 24.Nf3 (24.Kh1!?–/+) 24...Ne3–+ 25.Rh2 Kh8 (25...Ng2?! 26.Rg2 Rg2 27.Kg2–/+) 26.Kh1 Rdg8 (26...Ng2?! 27.Rg2 Rg2 28.Kg2 Rg8 29.Kf1–/+) 27.Rg1 Nf6 28.Ng5 h6 29.Ne6 (29.Bc1 hg5 30.Be3 fe3 31.hg5 Nh7 32.Bh3 Bg5 33.Be6–+) 29...Ne4! (29...Ne4 30.Rh3 Rg2 (30...Ng2?! 31.Ng7 Ng3 32.Rg3 fg3 33.Nf5–/+) 31.Rg2 Rg2 (31...Ng2?! 32.Qe4 cd5 33.cd5–+) 32.Qe3 fe3 33.Kg2 Qg8 34.Kf3 Nd2 35.Ke3 Qg2–+; 29...Ng2?! 30.Ng7 Ne3 31.Nf5 Rg1 32.Kg1 Nf5 33.ef5 cd5 34.cd5–/+; worse is 29...Rg2 30.Rhg2 Rg2 31.Rg2 Ng2 32.Qg2–+) 0–1. Bankwitz,Werner – Pommerel,Wim H, CiF, 1984.

5.e3 c6 6.d4 e4 7.c4 Be7 (7...d5 8.c5+=) 8.Ne2 (8.d5 0–0+=) 8...Qb6 (8...d5 9.c5+=) 9.Qb3 a5 (9...d5 10.c5 Qc7 11.0–0=) 10.a3 (10.ba5 Qa5 11.Nbc3 Ra6+=) 10...ab4+= 11.ab4 (11.0–0 d5+=) 11...Ra1 12.Ba1 Be6 (12...d5 13.c5 Qa6 14.Bc3+=) 13.Nd2 0–0 14.0–0 (14.Nf4 Bf7=) 14...Bf7 (14...Na6 15.Nf4 Bf7 16.Bc3=) 15.Rb1 White intends b5 (15.Bh3 d5 16.c5 Qb5+=) 15...Nbd7 16.Bc3 Ra8 17.h3 (17.b5 c5=) 17...Qc7 (17...d5 18.c5 Qc7 19.b5=) 18.b5= c5 19.d5 Nb6 (19...Ne5 20.g4 fg4 21.hg4 Neg4 22.Nf4= (worse is 22.Be4 Ne4 23.Ne4 Bg6–/+)) 20.Ra1 Ra1 21.Ba1 Nbd5 (21...Qd7!?=) 22.cd5+/– Nd5 23.Qa4 (23.Qb2 Bf6 24.Qa3 Qd8+/–) 23...Nb6 24.Qc2 (24.Qa5 d5+/–) 24...Qd7 25.Qb1 Nc4 26.Nc4 Bc4 Attacks the isolani on b5 27.Nc3 (27.Qb2 Bf6 28.Qc2 Bd3 29.Qa2 Qf7 30.Qa8 Qf8+=) 27...d5 28.Bf1 (28.Qb2 Bf6+=) 28...Bf1 29.Kf1 (29.Qf1 Bf6+=) 29...Bf6 (29...f4 30.Qa2 Qh3 31.Ke2 f3 32.Kd2+=) 30.Qb3 (30.Kg2 Kf7+=) 30...Bc3 (30...c4 31.Qa4+=) 31.Qc3+/– b6 32.Kg2 h5 (better is 32...h6!?+/–) 33.Qe5 Kh7 34.h4 (34.Qb8 d4 35.Qb6 d3+–) 34...Kg6 35.Kh2 (better is 35.Qb8 Qb5 36.Qa7+–) 35...Qf7? (better is 35...Kh7+–) 36.Qd6 Kh7 37.Qb6 Qe7 (37...d4 38.Qc5 (38.ed4?! Qa2+=) 38...d3 39.b6+–) 38.Qc6 d4 (38...Qa7 39.Be5 c4 40.b6+–) 39.b6 (39.ed4 cd4 40.Bd4 Qd8+–) 39...d3 (39...de3 40.Qc7 Qf8+–) 40.Bc3 f4 41.ef4 (41.b7 fg3 42.fg3 d2 43.Bd2 Qe5+–) 41...e3 42.fe3 Qe3 43.Qg2 c4 (43...Qe7+–) 44.b7 Qb6 If Black now would get d2 in, he might survive 45.Qe4 Kh6 Black threatens to counter with Qf2 46.f5 (46.Qc4?! Qf2 47.Kh3 Qf1 48.Kh2 Qf2 49.Kh1 Qf1 50.Kh2 Qf2=) 46...Qf2 47.Qg2 Qb6 If Black now only could play Kh7... 48.g4 (48.b8Q Qb8 49.Qc6 Qd6 50.Qd6 Kh7 51.Qg6 Kg8 52.Qg7) 48...hg4+– 49.Qg4 Qf2 50.Qg2 Qf4 51.Qg3 1–0. Schmidt,Renate – Moritz,Cornelia, BL, 1994.

5.e3 c6 6.Ne2 a5 +=.

5.e3 Nbd7 6.c4 Be7 7.Nc3 Nb6 8.d3 c6 9.b5 Bd7 10.a4 a5 11.Qc2 0–0 12.Nge2 Nh5 13.Bf3 Nf6 14.Nb1 (14.Qb3 Rf7=) 14...Ne8 (better is 14...e4 15.Bg2 Qc7 16.de4 cb5 17.ef5 Qc4 (worse is 17...ba4 18.Na3=; 17...Nc4?! 18.ab5 Rac8 19.Bd4+/–) 18.Qc4 Nc4–/+) 15.Nd2 Bf6 16.0–0 Nc7 17.c5 dc5 18.Qc5 (18.bc6!? Bc6 19.Bc6 bc6 20.Rfb1=) 18...Ne6–/+ 19.Qc2 Nd5 (better is 19...cb5!? 20.ab5 Bb5–/+) 20.bc6 Bc6 21.e4 fe4 22.Be4 (22.Ne4 Ng5 23.Ng5 Bg5+=) 22...Kh8 23.Nc4 Nb4 24.Qd1 Be4 25.de4 Qc7 26.Ne3 Rad8 27.Qc1 Qc1 28.Bc1 (28.Rfc1?? Rd2 29.Kf1 Rb2–+) 28...Ng5 29.f3 Be7 30.Kg2 Nd3 (30...Ne6 31.Rb1=) 31.Ba3 (31.Nd5 Nc1 32.Rac1+/– (worse is 32.Rfc1 Nf3 33.Rc3 Nd4 34.Ne7 Ne2=)) 31...Ba3= 32.Ra3 Nb4 (32...Rf3!? 33.Rf3 Ne1 34.Kf2 Ngf3=) 33.Nc4+/– Nf7 34.Nc3 (34.Rb1!?+/–) 34...Rc8 35.Ne3 (35.Na5? Nc2 36.Nb5 b6–+) 35...Rfd8 36.Ncd5 Nc6 37.Rb3 Nd6 38.Nb6 Rc7 39.Rc3 Rf7 40.Rc5 Ne8 (40...g6 41.Rd1 Rf6 42.Rcd5+/–) 41.Rd5 Nc7 (41...Nf6!? 42.Rd8 Nd8+–) 42.Rd8+– Nd8 43.Rd1 Nc6 44.Nec4 h6 45.Nd6 Rf8 46.Nb7 Nd4 47.Nc4 Rb8 48.Nbd6 Nce6 49.Nf7 Kh7 50.Nfe5 Rb4 51.f4 (51.Na5 Ra4 52.Nac4 Ra2 53.Rd2 Rd2 54.Nd2 Nc5+–) 51...Ra4 (51...Nc6 52.Kf3 Ne5 53.Ne5 Ra4 54.Rd5+–) 52.Rd2 (better is 52.f5!? Ra2 53.Kh1+–) 52...Nb5 53.Rb2 Ned4 54.h4 (54.Nb6!? Ra3 55.Kh3+=) 54...Ra1+= 55.h5 a4 56.Nf3 a3 57.Na3 Ra3 0–1. Macedo,A Soares De (2025) – Da Silva,J Ferreira (1710), 6th Magistral RN – Grupo B, 2009.

5.e3 g6 6.Ne2 Bg7 7.0–0 0–0 8.d4 e4 9.d5 Qe7 10.a4 Nbd7 11.h4 (11.a5 c5+=) 11...a5 12.b5 b6 (12...Nb6 13.Nf4+=) 13.c4 (13.Nf4 Ne5+=) 13...Ne5 14.Be5 Qe5 15.Nbc3 Ng4 16.Bh3 Nf6 17.Rc1 (17.Bg2 Nd7+=) 17...Qe8 18.Nd4 Rf7 19.Nce2 Bh6 (19...Ng4 20.Nf4=) 20.Nf4= Bf4 21.ef4 Nd7 22.Rc3 Nc5 23.Re3 Bd7 24.Rfe1 Qf8 25.Bf1 (25.f3 Re8=) 25...Re8 26.Kg2 (26.Be2 Qg7=) 26...h5 (26...Qg7 27.f3=) 27.Be2 (27.Nb3 Nb3 28.Qb3 Qg7+=) 27...Rfe7 28.Qa1 Kf7 29.Nb3 Nb3 30.Rb3 Qg7 31.Qd1 Kf8 32.Qd2 Qf6 33.Re3 Kf7 34.Bd1 Kf8 35.Bb3 Kg7 36.Rd1 Kf8 37.c5 (37.Rc1 Rf7+=) 37...Ra8 (37...dc5 38.d6 cd6 39.Qd6 Qd6 40.Rd6 c4 41.Bc4 Be6+=) 38.cb6 cb6 39.Rc1 Rc8 40.Rec3 Rc5 41.Rc5 dc5 42.d6 Re8 43.Rd1 Be6 44.d7 Rd8 45.Qd6 Kf7 46.Bd5 Bd5 47.Rd5 Qd6 48.Rd6 Ke7 (48...c4!?=) 49.Rb6+/– Rd7 50.Rg6 Rd4 (50...Rd2 51.Rc6 e3 52.Rc5 Rf2 53.Kg1+/–) 51.b6+– Ra4? (better is 51...Rb4 52.b7! Kd7+/–) 52.b7 Rb4 53.Rg8 Kd6 54.b8Q Rb8 55.Rb8 Kc6 56.Kf1 (56.Rf8 a4+–) 56...a4 57.Ke2 1–0. Ivanets,Vladimir (2255) – Kanygin,Nikolai N (2145), RUS–ch Seniors, 2004.

5.Nf3 Be7 6.0–0 c6 7.c4= 0–0 8.d4 e4=+ 9.Nfd2 d5 10.e3 Bb4 11.Qb3 Be7 12.Nc3 Kh8 13.Rfc1 b6–/+ 14.a4 a6 15.Bf1 Bb7 16.Ba3=+ Nbd7 17.Be7 Qe7 18.c5 b5 19.a5 g5 20.Ne2 Nh5 21.h3 f4–/+ 22.g4 Ng7 23.ef4 gf4–+ 24.f3 e3 25.Nb1 Qh4 26.Kh1 Rae8 27.Nbc3 Re6 28.Ra2 h5 29.gh5 Nh5 30.Ne4? Rg6 31.Nd6 Qf2 (31...Qf2 32.Nf7 Rf7 33.Rb1 Rg1 34.Ng1 Ng3) 0–1. Neuhof,KE – Magnusson,G, corr ICCF EU/M/GT/056 (year?).

5.Nf3 Be7 6.c3 c6 7.Qb3 Qc7 8.0–0 Nbd7 9.Ng5+= Nf8 10.Qf7 Kd8 11.Qb3 Rg8= 12.b5 h6=+ 13.Nf3 Be6–/+ 14.Qa4 cb5 15.Qb5 Bc4 16.Qa4 Be2 17.Re1 Bf3 18.Bf3 e4 19.Bg2 Ng4 20.Qb3=+ Qb6 21.Rf1 Qb3–+ 22.ab3 Ne5 23.f3 ef3 24.Bf3 Nf3 25.Rf3 g6 26.Na3 Ne6 27.Re3 Nc5 28.Rae1 Re8 29.c4 Kd7 30.b4 Ne4 31.d3 Ng5 32.h4=+ Nf7 33.Re6? g5 34.h5 a6 35.Bg7 Bf8 36.Re8–/+ Re8 37.Re8 Ke8 38.Bc3 Kd7 39.b5 d5–+ 40.Nc2 dc4 41.dc4 ab5 42.cb5–/+ Nd6 43.Bb4 Bg7 44.Kg2? Nb5 45.Kf3 Nd4 46.Nd4 Bd4 47.Bf8 Ke8 48.Bh6 Bf6 49.Ke2 Kf7 50.Kd3 Kg8 51.Ke2 Be7 52.Kd3 Kh7 (52...Kh7 53.Bg5 Bg5–+) 0–1. Feicht,Arno – Palmi,Herbert, NB MII Germany, 1993.

5.Nh3 Be7 6.0–0 0–0 7.d4 e4 8.c4 c6 9.d5 Qe8 10.Nc3 Nbd7 11.a4 Ne5 12.Qb3 Kh8 13.a5 Nh5 Black plans f4 14.f3 Qg6 15.Kh1 (15.a6 ef3 16.ef3 f4 17.ab7 Bb7+/–) 15...f4 (15...ef3!? 16.ef3 Nd3=) 16.g4+= (16.fe4 Bh3 17.Bh3 Ng3 (17...fg3?! 18.a6–/+) 18.hg3 Qg3–+; 16.Ne4 fg3 17.Rg1 Qh6 18.Be5 de5–/+) 16...ef3 17.ef3 Bg4 18.fg4 f3 19.Rf3 Rf3 (worse is 19...Nf3 20.gh5 Qh6 21.a6 ba6 22.dc6+–) 20.Bf3 Nf3 21.gh5 (21.Rg1 Nf6 22.Rg2 Ng4 23.dc6 bc6=) 21...Qh5+= 22.Qc2 Qh3 23.Qg2 Qg2 24.Kg2 Ne5 25.a6 Rb8 26.ab7 Rb7 27.dc6 Nc6 (27...Rb4? 28.c7 Rc4 29.Ra7+–) 28.b5 Ne5 29.Ra4 Nd3 30.Ba3 Kg8 31.Kf3 Ne5 32.Ke3 Ng4 33.Ke4 Nf6 (33...Kf7 34.Nd5=) 34.Kd4 Nd7 35.Nd5 Bf8 36.Bb4 Kf7 37.Ra6 Attacks the isolani on d6 37...Nc5 38.Ra3 g5 39.Rf3 Kg7 40.Ne3 Rf7 41.Rf7 Kf7 42.Kd5 Kf6 43.Bc3 (43.Bc5 dc5 44.Ng4 Kf5+=) 43...Ke7+= 44.Kc6 Na4 (better is 44...Ke6!?=) ˝–˝. Riepe,Bernhard (2015) – Klein,Manfred, desc–online.de, 2003.

5.a3 g6

6.d3 a5 7.Nd2 (7.Nf3 Bg7 8.0–0 ab4 9.ab4 Ra1 10.Ba1=; 7.b5 Bg7 8.Nf3 0–0 9.0–0 e4 10.Nd4=) 7...Bg7 8.Ngf3 0–0 9.0–0 f4 10.gf4=.

6.d3 c6 7.Nf3 (7.c4 Bg7 8.Nf3 0–0 9.0–0 Qe7 10.Nc3=; 7.Nd2 Bg7 8.Ngf3 Qe7 9.0–0 e4 10.Ne1=) 7...Bg7 8.0–0 0–0 9.c4 Qe7 10.Nc3=.

6.Nf3 A) 6...e4 7.Nd4 Bg7 8.d3 c5 9.Nb3 cb4 10.de4=; B) 6...c6 7.0–0 (7.c4 Bg7 8.0–0 0–0 9.d3 Qe7 10.Nc3=; 7.d3 Bg7 8.c4 0–0 9.0–0 Be6 10.Nbd2=) 7...Bg7 8.c4 0–0 9.d3 Nbd7 10.Nc3=; C) 6...Bg7 7.d3 (7.0–0 0–0 8.d3 c6 9.c4 Qe7 10.Nc3=; 7.Nc3 0–0 8.0–0 c6 9.d3 Be6 10.Ng5=) 7...Qe7 8.0–0 e4 9.Nd4 e3 10.f4=.

6.f4 A) 6...Qe7 7.Nh3 (7.Nc3 Bg7 8.fe5 de5 9.e4 c6 10.Nge2=; 7.fe5 de5 8.Nc3 Bg7 9.e4 c6 10.Nge2=) 7...Bg7 8.fe5 de5 9.Nc3 c6 10.Nf2=; B) 6...Nbd7 7.Nh3 (7.e3 Bg7 8.Ne2 e4 9.0–0 Qe7 10.Nbc3=; 7.Nf3 e4 8.Nd4 Nb6 9.0–0 Na4 10.Bc1=) 7...Bg7 8.0–0 e4 9.d3 Qe7 10.c4=; C) 6...ef4 7.gf4 Bg7 8.Nf3 Qe7 9.e3 c6 10.Bd4=.

6.Nh3 A) 6...Qe7 7.Nc3 (7.c4 Bg7 8.Nc3 Nbd7 9.d3 Nb6 10.0–0=; 7.0–0 h5 8.f4 h4 9.gh4 Bg7 10.Qe1=) 7...Bg7 8.d4 c6 9.0–0 0–0 10.d5=; B) 6...a5 7.0–0 (7.b5 Bg7 8.0–0 0–0 9.c4 Nbd7 10.d4=; 7.c4 Bg7 8.b5 0–0 9.0–0 Nbd7 10.d4=) 7...Bg7 8.c4 0–0 9.b5 Nbd7 10.d4=; C) 6...Bg7 7.c4 (7.0–0 h5 8.d4 Qe7 9.de5 de5 10.Qd2=) 7...a5 8.b5 0–0 9.0–0 Nbd7 10.d4=.

6.d3 Bg7

7.Nd2 Qe7 8.Nh3 Nbd7 9.0–0 0–0 10.c4 =.

7.Nf3 0–0 8.0–0 e4 9.Nfd2 Qe7 10.c4 =.

7.c4 0–0

8.Qb3 a5 9.Nh3 (9.c5 Kh8 10.Nf3 e4 11.Ng5 d5 12.0–0 Qe7 13.Nh3; 9.Nf3 e4 10.Nd4 a4 11.Qc2 c5 12.Nb5 Nc6 13.de4) 9...ab4 (9...Qe7 10.0–0 Nc6 11.b5 Nd4 12.Bd4 ed4 13.Qb2) 10.ab4 Ra1 11.Ba1 c6 12.0–0 Nbd7 13.Nc3.

8.Qb3 Nc6 A) 9.b5 Nd4 (9...Nb8 10.Nf3 Qe8 11.0–0 a6 12.b6 c6 13.d4) 10.Bd4 ed4 11.Nf3 Re8 12.0–0 Nd7 13.c5; B) 9.Nh3 Nd4 (9...a5 10.0–0 Qe8 11.e3 ab4 12.ab4 Ra1 13.Ba1) 10.Bd4 ed4 11.0–0 Re8 12.Re1 a5 13.b5; C) 9.Nf3 e4 (9...a6 10.0–0 Qe7 11.Nbd2 Bd7 12.a4 Rae8 13.b5) 10.Nd4 Nd4 11.Bd4 Be6 12.Nc3 Qe7 13.0–0.

8.Qb3 Nbd7 A) 9.c5 Kh8 10.cd6 cd6 11.Nd2 a5 12.Ngf3 ab4 13.ab4; B) 9.Nh3 h6 (9...Kh8 10.0–0 c6 11.Ng5 Qe7 12.Nc3 h6 13.Nf3) 10.0–0 c6 11.Nd2 Qe7 12.c5 d5 13.e4; C) 9.Nf3 Kh8 (9...Qe7 10.0–0 c6 11.Nc3 e4 12.Nd4 e3 13.f4) 10.0–0 c6 11.Nc3 Qe7 12.Qc2 e4 13.Nd4.

8.Qb3 e4 A) 9.Nd2 ed3 (9...Re8 10.Nh3 Qe7 11.0–0 e3 12.Nf3 a5 13.Nd4) 10.Qd3 a5 11.Ngf3 Na6 12.Qb3 Re8 13.e3; B) 9.Nh3 Nc6 (9...c6 10.0–0 Qe7 11.Nf4 Nbd7 12.Nc3 Qf7 13.b5) 10.0–0 Re8 11.Nf4 g5 12.Nh3 ed3 13.ed3.

8.Qb3 Qe7 9.a4 c6 (9...a5 10.b5+= Nbd7 11.d4 ed4 12.Bd4 Ne5 13.Nd2; 9...e4 10.Nd2 a5 11.b5 Nbd7 12.c5 Rf7 13.cd6) 10.a5 (10.Nf3 a5+= (10...e4 11.Nd4 c5 12.Nc2 ed3 13.Qd3) 11.b5 Nbd7 12.0–0 Nc5 13.Qc2) 10...Be6 (10...e4 11.de4 (11.Nh3 Nbd7 12.0–0 Ne5 13.d4) 11...fe4 12.Nd2+= Na6 13.Rd1) 11.Nf3 h6 (11...Nfd7 12.0–0= Na6 13.Nc3; 11...Na6 12.0–0 Rab8 13.d4) 12.Nbd2 (12.0–0 Nbd7 13.Nbd2) 12...Kh7 (12...g5 13.0–0=; 12...Na6 13.0–0) 13.h3 (13.0–0=) 13...Bg8 (13...Na6 14.0–0=) 14.e4 (14.0–0 Na6=) 14...fe4+= 15.de4 Na6 (15...d5 A) worse is 16.Ne5 Ne4 17.f4 Nd2 18.Kd2 dc4–+; B) 16.Be5? de4 (16...Ne4?! 17.Bg7 Nd2 18.Kd2 dc4 19.Qc3 Qg7 20.Qg7 Kg7 21.Rae1–/+) 17.0–0 ef3 18.Nf3 Na6–+; C) 16.ed5 cd5 17.0–0+= (17.Be5? Nfd7 18.Qe3 Ne5 19.Ne5 Qe5 20.Qe5 Be5–+)) 16.0–0= Nc7 (16...Be6 17.Qc3=) 17.Qc2 White intends c5 17...Ne6 18.c5 (18.a6 Rab8=) 18...dc5 19.Ne5 Rad8 (19...cb4!? 20.a6 Rac8=) 20.Ng6+/– Kg6 21.e5 Kf7 22.ef6 Bf6 23.Bf6 Qf6 24.Ne4 Bh7 25.bc5 (worse is 25.Nf6 Bc2 26.Ng4 h5 27.Ne5 Kf6=) 25...Qe5 (25...Qd4 26.Rae1 Kg7 27.Qb1+/–) 26.a6 ba6 (26...Be4 27.Be4 (27.Qe4?! Qe4 28.Be4 Nc5+=) 27...Nd4 28.f4+–) 27.Ra6 Be4 28.Ra7 Kf6 29.Be4 Nd4 30.Qd3 (30.f4 Qe6 31.Qg2 Rfe8+–) 30...Qc5 31.Rh7 Rg8? (better is 31...Rh8 32.Rh8 Rh8+–) 32.Rh6 Kf7 33.Bg6 Kf8 34.Rh7 Rg7 35.Rh8 Rg8 36.Rg8 Kg8 37.Bh7 Kh8 38.Be4 Qe5 39.Qe3 Rd6 40.Rb1 Re6 41.Re1 Qf6 42.Kh1?? Nc2= 43.Qa7 Re4–/+ 44.Qb8 Kg7 45.Qc7 Kg6 46.Re4 Qf3 47.Kg1 Qe4 48.Qd6 Kf7 49.Qd7 Kg8 50.Qd8 Kh7 51.Qd7 Kh6 52.Qd6 Kg7 53.Qd7 Kf6 54.Qd8 Ke6 55.Qe8 Kd5 56.Qf7 Kd4 57.Qf6 Kd3 58.Qd6 Kc4 59.Qd2 c5–+ 60.h4 Kb3 61.Qh6 Nb4 62.h5 c4 63.Qb6 c3 64.h6 c2 (64...c2 65.Qc7 Qc4 66.Qc4 Kc4–+) 0–1. Guerrini,Donato – Barlocco,Carlo (2160), Magenta op, 1999.

8.Qb3 Qe7 9.Nf3 c6= (9...e4 10.Nd4 c5 11.Nc2 a5 12.bc5 dc5 13.0–0) 10.0–0 e4 11.Nd4 c5 12.Nc2 Nbd7 13.Nc3.

8.Qb3 Qe7 9.Nh3 c6 (9...a5 10.0–0 Nc6 11.b5 a4 12.Qd1 Nd4 13.Nc3) 10.Nc3 h6 11.f4 ef4 12.Nf4 Kh7 13.e4.

8.Qb3 Re8 A) 9.Nh3 h6 (9...c6 10.0–0 a5 11.Nc3 Na6 12.Ng5 h6 13.Nf3) 10.Nc3 c6 11.0–0 Be6 12.b5 Qd7 13.f4; B) 9.Nd2 a5 (9...Na6 10.c5 Be6 11.Qa4 c6 12.cd6 Qd6 13.Qc2) 10.Ngf3 e4 11.de4 fe4 12.Nd4 Qe7 13.0–0; C) 9.Nf3 e4 (9...c6 10.0–0 Qe7 11.Nbd2 Nbd7 12.Rab1 Bh6 13.e3) 10.Nd4 c5 11.Nc2 ed3 12.Qd3 Nc6 13.Nd2.

8.Nc3 c6 9.Nf3 Qe7 (9...e4 10.de4+=) 10.0–0 Kh8 11.e3 Be6 12.Nd2 d5 13.cd5 cd5 14.b5 Nbd7 15.d4 e4 16.a4 Qf7 17.Nb3 g5 18.f4 (18.f3 f4=) 18...ef3 (18...gf4 19.ef4 Nb6 20.Qe2+=) 19.Bf3 Qg6 20.Qe2 Rae8 21.Qc2 b6 22.a5 Bh6 23.Rfe1 g4 24.Bg2 Ne4 25.Ne4 fe4 (25...de4? 26.d5 Bg7 27.Bg7 Qg7 28.de6 Re6 29.Nd4+–) 26.ab6 ab6 27.Be4 Bf5 (27...Qe4 28.Qe4 de4 29.d5 Bg7 30.de6 Re6 31.Ra7 Bb2 32.Rd7=) 28.Bf5 Qf5 29.Qf5 Rf5 30.Bc1 Nf6 31.Ra6 Ne4 (better is 31...Nd7!?+=) 32.Rb6+– Ng5 33.Kg2 Ref8? (better is 33...Nf3 34.Re2 Bg7+–) 34.Rh6 Rf2 35.Kh1 (35.Kg1!? Nh3 36.Rh3 gh3+–) 35...Nf3 36.Rd1 Rf6 37.Rh5 Rf5 38.Rh4! Nh4 39.gh4 Re2 40.b6?? (better is 40.Nd2+–) 40...Rff2= 41.b7 Rh2 ˝–˝. Labahn,Wolfgang (2220) – Reeh,Oliver (2395), Wichern op 5th, 1999.

8.Nc3 Nc6 9.Nf3 Re8 10.0–0 =.

8.Nf3 a5 9.0–0 ab4 10.ab4 =.

8.Nf3 c6 =.

5.c4 c6

6.Nc3 a6 A) 7.d4 A1) 7...e4 8.Nh3 (8.d5 Be7 9.Nh3 Nbd7 10.0–0 Qb6 11.a3) 8...Nbd7 9.Qb3 a5 10.ba5 Qa5 11.0–0; A2) 7...Qb6 8.a3 Be6 9.d5 Bd7 10.Nf3 a5 11.dc6; B) 7.Qb3 Be7 (7...Be6 8.Nf3 b5 9.d3 a5 10.ba5 Qa5 11.0–0) 8.Nf3 Bd7 9.0–0 Qc7 10.c5 a5 11.ba5; C) 7.Nf3 Be7 (7...e4 8.Nd4 d5 9.c5 a5 10.a3 ab4 11.ab4) 8.0–0 (8.d3 Qc7 9.0–0 d5 10.Qb3 d4 11.Nb1) 8...0–0 9.Qb3 Kh8 10.a4 e4 11.Nd4.

6.Nc3 Be6+= 7.Nf3 (7.Qb3 a5+= (7...Na6 8.Nf3 Qb6 9.a3 Nc5 10.Qc2 Ncd7 11.d3) 8.b5 (8.Nh3 b5 9.Nb5 d5 10.ba5 cb5 11.Qb5) 8...a4 9.Qc2 a3 10.Bc1 Be7 11.bc6; 7.d3 d5 8.cd5 (8.a3 dc4 9.dc4 Bc4 10.Nf3 Bd6 11.Qc2) 8...cd5 9.a3 d4 10.Na2 Nc6 11.Nf3; 7.Qc2 A) 7...Nbd7 8.Nf3 (8.f4 Qb6 9.Qb3 Ng4 10.c5 Bb3 11.cb6) 8...Be7 9.Nd1 Qb6 10.a3 a5 11.Ng5; B) 7...Be7 8.Nf3 (8.Nd1 a5 9.b5 cb5 10.cb5 Qb6 11.Nc3) 8...0–0 9.d3 Qc7 10.0–0 Nfd7 11.Bc1) 7...Bc4–/+ 8.0–0 (8.Qc2 Qd7 9.0–0 Be7 10.a3 0–0 11.d3) 8...Be7 (8...Qb6 9.Qc2 Be6 10.a3 Be7 11.Ng5) 9.Qc2 Be6 (9...Qd7 10.a3 0–0 11.Rfc1) 10.Ng5 (10.a3 0–0 11.Ng5) 10...Qd7 (10...Bc8 11.a3–/+) 11.Bh3 (11.Ne6+=) 11...g6 12.Ne6 Qe6 13.e4 Qc4 14.ef5 g5 15.Rfe1 g4 16.Bg2 Nbd7 (16...Qb4 17.Rab1 Qc5 18.Ba1=) 17.b5 cb5 18.d3 (worse is 18.Bb7 Rb8 19.Be4 b4+=). wiking – girlalone, internet, 2010.

6.Nc3 Be7 A) 7.Qb3 A1) 7...Qb6 8.b5 (8.Nf3 Na6 9.a3 e4 10.Nd4 c5 11.Nc2) 8...Be6 9.d3 Ng4 10.e3 0–0 11.Nge2; A2) 7...Na6 8.Nf3 (8.d3 Qb6 9.a3 Nc5 10.Qc2 Ne6 11.Nf3) 8...e4 9.Nd4 0–0 10.f3 Nb4 11.fe4; B) 7.b5 B1) 7...0–0 8.Qb3 (8.Nf3 e4 9.Nd4 a6 10.Qa4 c5 11.Nc2) 8...Be6 9.Nf3 Ne4 10.d3 Nc5 11.Qc2; B2) 7...Be6 8.d3 (8.Qb3 Nfd7 9.bc6 bc6 10.f4 Bf6 11.Na4) 8...d5 9.cd5 Nd5 10.Nf3 Bf6 11.Nd5; C) 7.Nf3 C1) 7...Be6 8.d3 (8.Qb3 b5 9.d3 a5 10.a3 ab4 11.ab4) 8...Nfd7 9.0–0 0–0 10.a3 a5 11.b5; C2) 7...0–0 8.d3 (8.Qb3 e4 9.Nd4 c5 10.Nc2 Nc6 11.f3) 8...a5 9.b5 Ra7 10.0–0 Ra8 11.c5.

6.d3 Be6 7.Nf3 Be7 8.0–0 0–0 9.a4 f4 10.b5 fg3 11.hg3 Ng4 12.Nbd2 Qe8 13.Nh2 Nh2 14.Kh2 Rf6 15.e3 Qc8 16.f4 Rh6 17.Kg1 Bh3 18.Qf3 (worse is 18.fe5 Bg2 19.Kg2 Qh3 20.Kf3 de5+=) 18...Bg2 19.Kg2 Qh3 20.Kf2 ef4 21.ef4 Qf5 22.Rh1 Rh1 23.Rh1 a6 24.Qe2 Bf8 25.Rh5 Qf7 26.g4 (26.Ne4 ab5 27.Ng5= (27.ab5?! h6=)) 26...g6+= 27.Rh3 ab5 (27...Qf4 28.Ke1 Qf7 29.Ne4+/–) 28.Ne4 Be7 29.Qd2? (29.ab5 d5 (worse is 29...Qf4 30.Ke1 d5 31.Nd2+/–) 30.cd5 cd5+= (30...Qf4 31.Ke1 cd5 32.Rf3 Qg4 33.Rf8 Kf8 34.Qg4 de4 35.Qc8 Kf7 36.Qb7+–; 30...Qd5 31.Nf6 Kf8 32.Nd5 Bc5 33.Kg2+–; 30...cb5 31.Qd2 Ra2 32.Ke3+/–)) 29...Nd7 (29...ba4 30.Kg3 a3–/+) 30.Qc3? (better is 30.ab5 cb5 31.Kg2+=) 30...Qf4–+ 31.Rf3 (31.Ke1 Ne5 32.ab5 Rf8–+) 31...Qh2 32.Ke1 Ne5 33.Rf2 Bh4 34.ab5 (34.cb5 Bf2 35.Nf2 Rf8 36.Qb3 d5 37.Be5 Qf2 38.Kd1 Qe3 39.Qa3 Rf2 40.Qf8 Kf8 41.Bd6 Kf7 42.Bb4 Qd3 43.Kc1 Qc2) 34...Bf2 35.Nf2 (35.Kd1 Rf8 36.Qd2 Nc4 37.Nf6 Rf6 38.dc4 Qg1 39.Kc2 Be3–+) 35...Rc8 (better is 35...Rf8 36.Qe5 Qf2 37.Kd1 de5 38.Ba3 Ra8 39.Bc1 Ra2 40.Bb2 Qb2 41.bc6 Qd2) 36.Ne4 Qb2! (36...Qb2 37.Qb2 Nd3 38.Ke2 Nb2 39.Nd6 Rc7–+) 0–1. Danek,Vaclav (1990) – Cuhra,Martin (2075), CZE–chT2a, 2006.

6.d4 Nbd7 7.Nd2 Be7 8.Ngf3 Qc7 (8...0–0 9.c5 e4 10.Ng5=) 9.Ng5 (9.0–0 e4 10.Ng5 Nb6=) 9...Nf8 10.0–0 Ng6 (10...h6 11.de5 de5 12.Ngf3+=) 11.c5 (11.d5 Nd5 12.cd5 Bg5+/–) 11...e4= 12.cd6 Bd6 13.Qb3 Qe7 (13...Nd5!? 14.b5 h6 15.Nge4 fe4 16.Ne4 Be7=) 14.Nc4+/– Bb4 (14...Bc7 15.b5 Nd5 16.h4+/–) 15.a3 h6 16.ab4 (16.Qb4?! hg5 17.Nd6 Kf8=) 16...hg5 17.b5 Be6 18.bc6 bc6 19.Qa4 Bd5 (19...Qc7!?+/–) 20.Ba3+– Qd7 21.Nd6 Kd8? (better is 21...Kf8 22.Ne4 Kg8 23.Ng5 Bg2 24.Kg2 Qd5 25.Nf3 f4+–) 22.Qa6 Ne8 (22...Ke7+–) 23.Nb7 Kc7 24.Nc5 Qc8 25.Qa5 Kd6 26.Rfc1 Ke7 (26...Nc7+–) 27.Ne4 Ke6 28.Ng5 Kf6 29.Bd5 Kg5 30.Rc6 Qd7 31.Bc1 Kh5 (31...Kg4 32.Bf3 Kh3 33.Qe1 Nf4 34.Bf4 Qc6 35.Qf1) 32.Bf3 1–0. wiking – jevews, internet, 2010.

6.Nf3 e4 7.Nd4 d5 +=.

6.Nf3 Be7 7.0–0 Nbd7 (7...0–0 8.d3=) 8.Nc3 (8.Qc2 Qb6=) 8...0–0 9.Qb3 (9.b5 d5=) 9...Kh8 (9...e4 10.Nd4 Ne5 11.f4 ef3 12.Bf3=) 10.d4 e4 11.Ng5 (11.Nd2 Nb6=) 11...Nb8 (11...Nb6 12.Rfc1+=) 12.c5 (12.f3 a5+=) 12...d5 13.Nh3 Be6 (13...b6 14.Nf4=) 14.Nf4 Bg8 (14...Qd7 15.Bc1=) 15.b5 (15.a4 Nbd7=) 15...Nbd7 (15...b6 16.Na4=) 16.Rfb1 (16.bc6 bc6 17.Qc2 Rb8=) 16...Ng4 (16...Nc5 17.dc5 d4 18.Qc2 dc3 19.Bc3=) 17.Qa4 (17.bc6 bc6 18.Qb7 Qc8 19.Qc8 Rac8=) 17...Qc8 (17...cb5 18.Qb5 b6 19.Ncd5 bc5 20.h3=) 18.Bc1 g5 (18...cb5 19.Rb5 Ngf6 20.Qc2=) 19.Nh3 h6 20.f4 (20.f3 ef3 21.ef3 Ngf6+=) 20...ef3 21.ef3 Ngf6 22.Bd2 Re8 23.Nf2 (23.bc6 Qc6 24.Nf2 Qa4 25.Na4 Rab8+=) 23...Kg7 (23...cb5 24.Qb5 b6 25.cb6 Nb6 26.Qd3=) 24.Re1+= a6 (24...cb5 25.Nb5 Qc6 26.Nd3+=) 25.b6+/– Kg6 (25...Qd8 26.Re2+/–) 26.Bh3 Nf8 27.Qc2 (27.Re2+/–) 27...h5 (better is 27...Be6!?+/–) 28.Re5+– Be6 29.g4 hg4 (29...Bd7 30.gf5 Kf7 31.Bg5+–) 30.fg4 Kh6 (30...Bd7 31.gf5 Kf7 32.Rae1+–) 31.Bg5! Kg5 32.Qd2 Kg6 33.gf5 Kf7 (33...Kg7 34.Qg5 (34.Re6?! Ne6 35.fe6 Rg8+=) 34...Kh8 35.Qh6 N6h7 36.fe6+–) 34.fe6 (34.Re6?! Ne6 35.fe6 Kg7 36.Qg5 Kh8+/–) 34...Ne6 (34...Kg7+–) 35.Be6 Qe6 36.Re6 Ke6 37.Nd3 Rg8 38.Kh1 Rg7 (38...Kd7 39.Qf4 Rac8 40.Re1+–) 39.Ne5 1–0. marre – amerikani, internet, 2010.

5.c4 Be7

6.Qb3 0–0 7.Nf3 e4 A) 8.c5 Kh8 (8...d5 9.Ne5 a5 10.a3 Nbd7 11.0–0 Ne5 12.Be5 Ng4 13.Bd4 Bf6+=) 9.Ng5+= Qe8 10.Ne6 Be6 11.Qe6 dc5 12.bc5 Nfd7 13.Bh3 Qf7+=; B) 8.Ng5 a5 9.ba5 Nc6 10.0–0 Na5 11.Qc2 d5 12.d3 h6 13.Nh3 dc4+=; C) 8.Nd4 a5 (8...c5 9.Nc2 cb4 10.Nb4 Nc6 11.Nd5 Nd5 12.cd5 Na5 13.Qb4 Bd7=) 9.ba5 c5 10.Nb5 Be6 11.0–0 Nc6 12.d3 d5 13.Rd1 f4+=.

6.Qb3 0–0 7.Nf3 Kh8 8.0–0= Qe8 (8...a5 9.b5 a4 10.Qe3 f4 11.gf4 Ng4 12.Qc3 Rf4 13.d4 ed4=; 8...c6 9.Nc3 Qb6 10.d4 e4 11.Ng5 d5 12.c5 Qd8 13.Nh3 b6=; 8...e4 9.Nd4 c5 10.Nc2 cb4 11.Nb4 Nc6 12.a3 Be6 13.d3 d5=) 9.Nc3 Qh5 (9...a5 10.b5 Qh5 11.d3 Nbd7 12.Qc2 Kg8 13.Nd2 Nb6=) 10.Nd5 (10.Rac1 Bd7 11.a3 c6 12.d4 e4 13.Nd2 Qh6=) 10...Nd5 11.cd5 Nd7 Black prepares the advance f4 (11...f4 12.Qc3 Na6 13.b5 Nc5=) 12.d3 (12.Rac1 Bd8 13.a4 a5=) 12...Nf6 (12...a5 13.a3 (13.Qc2= Bd8=) 13...f4=; 12...Bd8 13.Rac1 Nf6=) 13.Rae1 (13.Rac1 Bd8=; 13.Rfc1 Bd8=) 13...f4 (13...Bd7 14.Rc1 Rac8 15.Rc2+=) 14.e4 (14.gf4 ef4 15.Nd4 Ng4=) 14...Bh3 (14...fe3!? 15.fe3 a5=) 15.d4 Ng4 16.de5 (16.Bh3 Qh3 17.de5 fg3 18.fg3 (18.hg3?? Rf3 19.Qf3 Qh2) 18...de5 19.Re2=) 16...de5 (16...Bg2 17.Kg2 Ne5= (worse is 17...de5 18.h3 Nh6 19.Qc3+/–)) 17.Bh3+/– Qh3 18.Be5 Bd6 19.Bd4?? (better is 19.Bd6 cd6 20.Qc2+=) 19...fg3–/+ 20.fg3 Bg3! 21.Re2 (21.hg3 Qg3 Combination) 21...Be5! 22.Bc5 (22.Be5 Ne5 Combination; 22.Ne5 Qf1 Mate attack) 22...Rf6 23.Rg2 (23.Rff2 Nf2 24.Rf2 Qg4 25.Kf1 Qe4–+) 23...Nh2! 24.Rh2 (24.Nh2 Bh2 Mate attack; 24.Rh2 Qg4 Double attack (24...Rg6 Decoy)) 24...Bh2 25.Nh2 Rg6 26.Kf2 Qh2 (26...Qh2 27.Ke1 Qh4 28.Kd1 Qe4–+) 0–1. Miralles,Gilles (2450) – Bologan,Viktor (2660), National I, Bordeaux FRA, 2003.

6.Qb3 0–0 7.Nh3 A) 7...Nc6 8.b5 Nd4 (8...Nb8 9.0–0 Nbd7 10.d4 Ne4 11.c5 Kh8 12.f3 Ng5 13.Ng5 Bg5+=) 9.Bd4 ed4 10.Qd3 Ne4 11.Nf4 Bf6 12.Be4 fe4 13.Qe4 d3=; B) 7...a5 B1) 8.b5 a4 (8...Nbd7 9.0–0 a4 10.Qc2 Nb6 11.d4 e4 12.Nf4 d5 13.c5 Nc4=; 8...e4 9.0–0 a4 10.Qc3 Nbd7 11.Nf4 Nc5 12.d3 c6 13.Nd2 cb5=; 8...c6 9.Nc3 Ne4 10.f4 Nc5 11.Qc2 Be6 12.d3 a4 13.Rb1 cb5=) 9.Qe3 c6 10.0–0 Be6 11.Na3 Ng4 12.Qd3 d5 13.cd5 e4+=; B2) 8.c5 Kh8 9.cd6 Bd6 10.ba5 Ne4 11.Nc3 Nc5 12.Qc2 Ra5 13.0–0 f4+=; B3) 8.a3 ab4 (8...Nc6 9.0–0 a4 10.Qc2 Qd7 11.b5 Nd4 12.Bd4 ed4 13.Nf4 g5=; 8...c6 9.0–0 ab4 10.ab4 Ra1 11.Ba1 Na6 12.d4 e4 13.Nc3 d5=; 8...a4 9.Qc2 Qe8 10.Nc3 Nc6 11.Na4 Qh5 12.b5 Nd8 13.f4 e4+=) 9.ab4 Ra1 10.Ba1 Na6 11.0–0 c6 12.d4 e4 13.Nc3 d5=; C) 7...c6 8.0–0 a5 (8...Qc7 9.d4 ed4 10.Bd4 c5 11.bc5 dc5 12.Bc3 Nc6 13.Rd1 Rd8=) 9.a3 ab4 10.ab4 Ra1 11.Ba1 Na6 12.d4 e4 13.Nc3 d5=; D) 7...Qe8 D1) 8.0–0 Qh5 (8...a5 9.b5 Qh5 10.Qe3 Ng4 11.Qf3 Nd7 12.d4 e4 13.Qc3 Bg5=; 8...Nc6 9.b5 Nd8 10.f4 e4 11.Nc3 Ne6 12.d3 Nc5 13.Qc2 a6=) 9.d4 f4 10.de5 Bh3 11.Bb7 Ng4 12.Ba8 Bf1 13.Kf1 Qh2–/+; D2) 8.Nc3 a5 (8...c6 9.0–0 Qg6 10.f4 e4 11.d3 Na6 12.Nf2 Be6 13.de4 Qf7+=; 8...Qh5 9.Nb5 Na6 10.d4 Kh8 11.Rd1 Nd7 12.de5 de5 13.a3 Bf6=) 9.b5 Nbd7 10.c5 Kh8 11.c6 Nc5 12.Qc2 Rb8 13.Rb1 Qh5+=.

6.Qb3 a5 7.Qa4 Nbd7 8.Nf3 +=.

6.Qb3 c6 7.Nc3 Be6 8.Nf3 h6 9.0–0 Nbd7 10.d4 e4 11.Nh4 Nf8 (11...b5 12.Bh3=) 12.d5 Bd7 13.Rad1 g5 14.c5 (better is 14.dc6!? bc6 15.Nf5 Bf5 16.Ne4 Be4 17.Be4+/–) 14...gh4+= 15.dc6 Bc6 16.b5 d5 17.bc6 bc6 18.Qb7 Qc8 19.Qb4 Rb8 20.Qa3 Ne6 21.Na4 Kf7 (21...hg3!? 22.hg3 Rg8–+) 22.Be5–/+ Rb5 23.Rb1 (23.Bh3 Qa6 (23...Nc5?! 24.Nc5 Bc5 25.Qc3–/+) 24.Bf5 Ra5–+) 23...a6 (23...Qa6!? 24.Rb3–+) 24.Qc3 Rg8 25.Nb6 Qb7 26.a4 Rc5 (26...Rb1 27.Rb1 hg3 28.hg3–/+) 27.Nc4?? (better is 27.Qd2 Rg6 28.Nc4–/+) 27...Qa7–+ (27...Rc4?! 28.Rb7 Rc3 29.Bc3–/+) 0–1. marekt – TheShrink, ChessWorld.net, 2012.

6.Qb3 Nbd7 7.Nf3 h6 (7...a5 8.Ng5 Nb6 9.ba5 Ra5 10.c5=) 8.0–0= Nf8 (8...Nb6 9.d3=) 9.c5 (9.Nc3 Ne6+=) 9...Be6 (worse is 9...dc5 10.Ne5 Be6 11.Qa4 c6 12.Nc6+/–) 10.Qa4 Bd7 (10...N8d7 11.cd6 cd6 12.Nh4+=) 11.Qb3 (11.b5 Ng6=) 11...e4 12.Nd4 (12.cd6 Bd6 13.Nd4 Qe7=) 12...dc5+= 13.bc5 Bc5 14.d3 (14.Qb7?? Rb8 15.Qa6 Rb2–+) 14...Rb8 15.de4 fe4 16.Rd1 (16.Nd2 Qe7=) 16...Qe7 17.e3 (17.Nd2 Rd8=) 17...Ne6+= 18.Nf5 Qf7 (18...Qf8 19.Nh4 Qf7 20.Nd2=) 19.Nc3 Exerts pressure on the isolated pawn (19.Nd2 g6 20.Nh4=) 19...0–0 (19...Rf8 20.Ne4 Ne4 21.Be4=) 20.Be4 (20.Ne4!? Ne4 21.Be4+/–) 20...Ne4 (20...Ng5 21.Rd7 Nd7 22.Bd5+–) 21.Ne4= Rbd8 (21...Qf5 22.Rd7 Rf7 23.Rf7 Qf7 24.Bg7 Kg7 25.Qc3 Kg8 26.Nc5+/–) 22.Bg7 (better is 22.Nf6! Kh8 23.Nh6+– (23.Nd7?! Rd7 24.Rd7 Qd7 25.Nh6 Ng5=; worse is 23.Rd7 Rd7 24.Nh6 Qe7+/–)) 22...Qf5+= 23.Bf8 (23.Nc5?? Qf2 (worse is 23...Qc5 24.Bf8 Kf8 25.Rd7 Rd7 26.Qe6+/–) 24.Kh1 Bc6 (24...Kg7?! 25.Rd7 Kh8 26.Qc3 Kg8 27.Ne6 Rd7 28.Nf8=) 25.e4 Kh7–+ (25...Kg7?! 26.Ne6 Kf6 27.Rd5+=)) 23...Kf8 (23...Bf8 24.Qb7 Bg7 25.Rab1=) 24.Nc5 (24.Qb7 Be7=) 24...Nc5+= (worse is 24...Qc5 25.Rd7 Rd7 26.Qe6+/–) 25.Qb4 (25.Qa3 Ke8+=) 25...Kg8 (25...b6 26.Rac1–/+) 26.Qc4+= Ne6 (26...Kh7 27.Rd5 Qf6 28.Rad1+/–) 27.Rd5 Qf7 28.Rad1 Ng5 (28...a6 29.Qg4 Kh8 30.Qh4=) 29.f4 Nh3 (29...c6 30.Rd7 Rd7 31.Qf7 Rf7 32.fg5 hg5 33.Kg2=) 30.Kg2+= Bc6?? (better is 30...Rc8+=) 31.Qc6!!+– (31.Qc6 Rd5 32.Qd5 Nf4 33.gf4 Qd5 34.Rd5+–) 1–0. Hadj Sassi,Nabil (1885) – Schmidt,Peter (2005), 5. Eckbauer Open, 2002.

6.Nc3 a5 7.b5 0–0 8.d3 Nbd7 9.Nf3 Rb8 10.0–0 b6 11.d4 ed4? (better is 11...Bb7+=) 12.Nd4+– (12.Qd4?! Nc5+=) 12...Ne5 13.f4 Nc4 14.Qb3 (14.Qb3 d5 15.Nc6+–) 1–0. usingprogram (2030) – 2165chess (1730), internet, 2012.

6.Nc3 c6 7.e3 Be6 8.d3 0–0 (8...d5 9.cd5 cd5 10.b5+=) 9.Nf3= Kh8 (9...a5 10.b5=) 10.a3 Nbd7 11.Qe2 Rc8 (11...a5 12.0–0=) 12.0–0 Qe8 13.Bh3 (13.Ng5 Bg8=) 13...Ng4 14.d4 (14.Bg2!?+=) 14...Qh5–/+ 15.Kg2 (15.Bg4 fg4 16.Nd2 d5–/+) 15...e4 (15...f4 16.Bg4 Bg4 17.h4–+) 16.Ng1 (better is 16.Nd2!?+=) 16...Nb6–+ 17.Bg4 (17.d5 cd5 18.cd5 Nd5 19.Nd5 Bd5–/+) 17...fg4 (17...Qg4?! 18.c5 Nc4 19.f3–/+) 18.d5 cd5 19.cd5 Nd5 20.Ne4 (20.Nd5 Bd5 21.Rac1 Kg8–+) 20...Nb6 21.f3 Bc4 22.Qd2 Bf1 23.Rf1 gf3 24.Rf3 Nc4 (24...d5 25.Nf2–+) 25.Qd4 Nb2 (25...Qg6!? 26.Rf8 Bf8 27.Nf2–+) 26.Qb2 Qd5 27.Qb1 Rc4 28.Nf2 Rf3 (28...Rc3 29.e4 Qc4 30.Rc3 Qc3 31.Qa2–+) 29.Nf3 Rc3 30.Qe1 Qc4 (30...Qc4 31.Nd2 Qc6 32.e4 Ra3–+; worse is 30...Ra3 31.Qc1 Rb3 32.Qc8 Qg8 33.Qb7–+) 0–1. Kilpatrick,Robert – McKerracher,D, corr SCCA, 1979.

6.Nc3 c6 7.Nf3 0–0 8.0–0= Be6 9.d3 Kh8 (9...Nfd7 10.a3=) 10.a4 Nbd7 (10...Qc7 11.b5=) 11.a5 (11.b5 Qc7=) 11...d5 12.a6 b6 (12...Rb8 13.cd5 Nd5 14.Nd5 Bd5 15.Qd2=) 13.cd5 (13.b5 cb5 (worse is 13...dc4 14.bc6 Nc5 15.Ne5+/–) 14.Nb5 Qb8+=) 13...cd5 (13...Nd5 14.b5 cb5 15.Nb5+=) 14.Nb5 Bb4 15.Ne5 Ne5 16.Be5 Qd7 (16...Ng4 17.Bf4 Bf7 18.Qb3+/–) 17.Qa4+/– Be7 18.Nc7 Rac8 19.Qd7 Bd7 (19...Nd7?? 20.Bg7! (worse is 20.Ne6 Ne5 21.Nf8 Rf8+–) 20...Kg7 21.Ne6 Kf7 22.Nf8 Kf8 23.Bd5+–) 20.Rfc1 (20.d4 Rfd8+/–) 20...Ng4 (20...Bc5 21.Bf6 (worse is 21.Bd5 Rc7 22.Bc7 Nd5–/+) 21...Rf6 22.Nd5+/–) 21.Bd4 Bd6 (21...Bf6!? 22.Bf6 Nf6 23.Nd5 Nd5 24.Bd5 Rfe8+–) 22.Nd5+– Bb5 (22...Bb8 23.Rc8 Rc8 24.Nb6 ab6 25.a7 (25.Bb6?! Rc2+–) 25...Ba7 26.Ra7 Rc1 27.Bf1+–) 23.Rc8 Rc8 24.Nb6! Rc2 (24...ab6 25.a7) 25.Nd5 (25.Nc4 Bc4 26.dc4 Re2 27.Ba7 Re7+–) 25...Be5 (25...Bc5 26.Bc5 Rc5 27.h3+–) 26.Be5 Ne5 27.Rb1 Bd7 (27...Ba6 28.Nb4 Re2 29.Na6+–) 28.f4 (28.Ne3 Rc8 29.Rb7 Bc6 30.Ra7 g6+–) 28...Ng4 (28...Nc6 29.Ne3 Rc3 30.Bc6 Rc6 31.Rb8 Rc8 32.Rb7+–) 29.h3 Nf6 (29...Nh6 30.Ne7 g5 31.Rb8 Kg7 32.Rb7+–) 30.Rb7 Bc8 31.Ra7 (better is 31.Nf6 gf6 32.Ra7 Ba6 33.Ra6 Re2 34.Bf1+–) 31...Ra2 (31...Nd5 32.Bd5 h6+–) 32.Ra8 h5 (32...Rc2 33.Ne7 Ne8 34.a7+–) 33.Rc8 (better is 33.Nf6 gf6 34.Rc8 Kg7 35.Rc7 Kh6+–) 33...Kh7 34.Nf6 gf6 (34...Kg6 35.Nd5 Ra6 36.Rf8 Ra1 37.Kf2+–) 35.Rc7 Kh6 36.a7 h4 37.gh4 Kh5 38.Kh2 Kh6 39.a8Q Ra8 40.Ba8 Kg6 41.d4 Kh5 42.d5 1–0. Braley,John (2200) – Tomkins,Ken (2260), NWC April Seattle, 1984.

6.Nc3 c6 7.Nf3 0–0 8.0–0 Be6 9.d3 Kh8 10.e3 Nbd7 11.a3 Qe8 12.Qe2 Qh5 13.Rfd1 g5 14.d4 e4 15.Nd2 Qe2 16.Ne2 d5 17.cd5 cd5 18.Rac1 Bd6 19.f4 h6 20.Nc3 Ng4 21.Re1 Rac8 22.h3 Ne3 23.Re3 gf4 24.gf4 Bf4 25.Re2 Bb8 26.Rf1 Nf6 27.Nb3 b6 28.Rfe1 Rg8 29.Kh1 Rg3 30.Re3 Rcg8 31.Rg3 Rg3 32.Nc1 Nh5 33.N1e2 Rg8 0–1. Fournier,Frederic (2000) – Joie,Sebastien (1805), echecsemail.com, 2005.

6.Nc3 c6 7.Nf3 Qb6 8.Qb3 Na6 =.

6.d3 0–0 7.Nc3 Nc6 8.a3 Qe8 9.Nf3 Rb8 10.Nd5 Bd8 11.Qb3 Be6 12.0–0 Bd5 (12...Nd5 13.cd5 Bf7 14.b5+=) 13.cd5+= White gets the initiative 13...Ne7 14.Ng5 Ng6 15.Ne6 Rf7 16.Bh3 Ng4 (16...Ne7!?+=) 17.e4+/– h5 (17...Nh6 18.Bc1 f4 19.Nd8 Qd8 20.Be6+–) 18.ef5+– Rf5 (better is 18...Ne7+–) 19.f3 Ne3 20.d4 ed4 (20...Nf1 21.Bf5 Ne7 22.Bh3 (22.Rf1?! Nf5 23.de5 Qf7+–; 22.Kf1?! Nf5 23.de5 Qb5 24.Kg1 Qb6 25.Kg2 Qe3 26.Qe3 Ne3 27.Kf2 Nd5+–) 22...Ng3 23.hg3+–) 21.Bd4 (21.Bd4 Nf1 22.Bf5 (22.Rf1?! Rf7+/–; worse is 22.Bf1 Bf6+=) 22...Ng3 23.hg3+–; 21.Bf5?! Nf5 22.Qd3 Qf7 23.Bd4 Nd4 24.Qd4 c5+–) 1–0. Woelfelschneider,Peter – Schnakenhascher, 2009.

6.d3 0–0 7.Nc3 Nc6 8.b5 Nd4 9.Nf3 Ne6 10.0–0 g5 11.Qd2 f4 12.Nd5 h6 13.Ne7 Qe7 14.Qc2 Rb8 (14...g4!? 15.Nh4 Qf7=) 15.d4+= Nd4 16.Nd4 ed4 17.Bd4 b6 18.Bd5 Kg7 (18...Kh8!?+/–) 19.gf4+– Be6 20.fg5 hg5 21.f4 g4 22.Bg2 Rh8 23.e4 Rh5 24.Rae1 White plans e5 24...Rbh8 25.e5 (25.e5 de5 26.Re5+–) 1–0. Fournier,Frederic (2045) – Gil Vega,Marcel (2145), queenalice.com (Defi), 2007.

6.d3 c6 7.Nf3= Bd7 (7...a5 8.a3+=) 8.Qb3 (8.0–0 0–0=) 8...Qc7 (8...Be6 9.0–0=) 9.0–0 0–0 10.c5 Kh8 11.cd6 Bd6 12.Ng5 =. Golemiec – Regaud, Paris–ch op–B, 1993.

6.d3 Nbd7 7.Nf3 0–0 8.0–0 Ng4 9.h3 Nh6 10.a4 f4 11.gf4 Rf4 12.b5 Nf6 13.e3 Rf5 14.Kh2 Rh5 15.e4 (15.a5 a6=) 15...Nfg4 (15...Be6!?–/+) 16.Kg1= Nf6 17.Kh2 Be6 18.Rh1 Qd7 19.Qf1 Rf8 20.Kg1 Kh8 21.Nbd2 g5 (21...c5!?–/+) 22.a5 g4 23.hg4 Nhg4 24.a6 b6 25.d4 Rg8 26.Rh5 Nh5 27.de5 de5 28.Ne5 Ne5 29.Be5 Bf6 30.Bf6 Nf6 31.Nf3 0–1. Fournier,Frederic (1830) – AMB79 (1760), Active, 2002.

6.d4 0–0 7.Nd2 Nc6 (7...e4 8.d5+=) 8.de5= Ne5 9.Ngf3 Nf3 10.Bf3 Be6 11.Qb3 d5 (11...Qc8 12.0–0=) 12.0–0 (12.Rd1 c6=) 12...c6 (12...dc4 13.Nc4 Qe8 14.a3= (14.Bb7? Rb8–+)) 13.Rfd1 Qb6 (13...dc4 14.Nc4 Qe8 15.Qc3=) 14.c5 Qc7 15.Rac1 (15.e3 Rad8=) 15...Ne4 (15...f4!?+=) 16.Ne4+= fe4 17.Be4 Bf6 (17...de4 A pinning theme 18.Qe6 Annihilates a defender: e6) 18.Bf6 Rf6 19.Bf3 a5 (19...Re8 20.Qa3+=) 20.b5+/– a4 21.Qb4 Qa5 (21...Bf5 22.a3+/–) 22.Rb1 (22.Qa5 Ra5 23.Rb1 Rf5+/–) 22...Bf5 (22...Qa7 23.Rd4+/–) 23.e4 (23.Qa5 Ra5 24.Rb4 Kf7+/–) 23...Qb4 (23...de4 24.Be4 Be4 25.Qe4+/–) 24.Rb4 Bg6 25.bc6 (25.Bg2 de4 26.Be4 Be4 27.Re4 cb5+/–) 25...bc6 26.Bg2 de4 27.Be4 Be4 28.Re4 Rf5 29.Rd7 (29.Rc4 Re5+/–) 29...Rc5 30.Ree7 Rg5 31.h4 Rg6 32.Rc7 (32.h5 Rg5+/–) 32...Kf8 (32...h5!?+=) 33.h5+/– Rg5 34.h6 (34.h6 gh6 35.Rh7+/–) 1–0. Kellermann – de Visser,Arno, corr ICCF TT–4–90 SF, 1994.

6.d4 0–0 7.Nf3 e4 8.Ng5 c6 9.d5 h6 10.Ne6 Be6–/+ 11.de6 Qc8 12.0–0 Qe6 13.Nd2 Nbd7 14.e3 Ne5 15.Be5 Qe5 16.Qb3–/+ Kh8 17.f4 Qe6 18.Rfd1 Rad8 19.b5 d5–+ 20.bc6 bc6 21.Rac1 Rb8 22.cd5 cd5 23.Qa4 Qb6 24.Re1 Ng4 25.Qd4? Qd4 26.ed4 Bb4 27.Re2 Ba3 28.Rc7 Rb2 29.h3? e3–+ 30.hg4 ed2 (30...ed2 31.Rd2 Rd2 32.Bd5 Rd4–+; 30...Rd2?! 31.Re3 Bb2 32.Kf1–/+) 0–1. wlittle (1645) – onelson (1780), net–chess.com, 2001.

6.e3 0–0 7.Ne2 Qe8 8.Nbc3 Nbd7 9.Nd5 Nd5 10.cd5 Qg6 11.0–0 Qf7 12.d3 Nf6 13.e4 fe4 14.de4 Qg6 15.Qd3 Ng4 16.f3 Nh6 17.Rac1 Bd8 18.Rc3 Bd7 19.Bc1 a6 20.Be3 Nf7 21.Qd2 c6 22.f4 cd5 23.ed5 Bb5 24.fe5 Be2 25.Qe2 Ne5 26.Rf8 Kf8 27.Qf1 Qf7 28.Bd4 Qf1 29.Bf1 Nd7 30.Rf3 Kg8 31.Bh3 Bf6 32.Bf6 Nf6 33.Be6 Kh8 34.g4 Rf8 35.Kg2 Re8 36.h4 h6 37.Rf4 Rf8 38.Rc4 h5 39.g5 Ng4 40.Bg4 hg4 41.Rg4 (better is 41.g6!? Kg8+–) 41...Rf5 42.g6 1–0. Spicak,Krzysztof (2080) – Karski,Lukasz (1860), Jantar Baltyku Poland, 2007.

6.e3 e4 7.d4 d5 8.Qb3 Be6 9.c5=+ b6 10.Ne2 0–0 11.Nf4 Bf7 12.h4 a5 13.a3 ab4 14.ab4 Ra1 15.Ba1 Nh5 16.Nc3 Nf4–/+ 17.ef4 bc5 18.bc5 Bf6 19.Nb5 Nd7 20.0–0 Qb8 21.Rb1 Qb7 22.Bf1 Rb8 23.Qa4 c6 24.Na3 Qc7 25.Rb8 Nb8 26.Nc2 Qb7 27.Kg2 Be8 28.Nb4 Bd8 29.Bc3 Qc7?? 30.Na6 Na6= 31.Qa6 h6 32.Be2 g5 33.hg5 hg5 34.Bd1 gf4–/+ 35.Ba4 fg3 36.fg3–/+ f4 37.gf4 Qf4 38.Qc8 Qf3 39.Kg1? Qf6 40.Qg4 Qg5 41.Qg5 Bg5 42.Kf1 Kg7 43.Bd1 Bd7 44.Kf2 Kf6 45.Kg3 Bc8 46.Ba4 Bd7 47.Bd1 Bc8 48.Ba4 Bd7 49.Bd1= ˝–˝. gregorgysi (2280) – funkade (2575), net–chess.com, 2004.

6.Nf3 e4 7.Nd4 0–0 +=.

6.Nc3 0–0

7.Qb3 c6 8.b5 c5 (8...a6 9.f4+=) 9.d3 Qe8 10.Nd5 Nd5 11.Bd5 Kh8 Black plans f4 12.e3 Nd7 13.Ne2 Nf6 14.Bg2 Nh5 Black prepares f4 (14...Qh5 15.Rb1=) 15.Nc3 (15.0–0 Bf6=) 15...f4= 16.Nd5 Bd8 17.Be4 (17.gf4 ef4 18.Be4 Nf6=) 17...fe3= 18.Ne3 (18.fe3 Nf6 19.Nf6 Ba5 20.Bc3 Bc3 21.Qc3 Rf6=) 18...Qf7 (18...Nf6+=) 19.Qc2 (19.0–0!?+=) 19...Ba5–/+ 20.Kf1 Nf6 21.Bg2 Ng4 (21...a6 22.ba6 Ra6 23.Kg1–/+) 22.Ng4 Bg4 23.h3 (23.Bd5 Bh3 24.Kg1 Qd7–/+) 23...Be6 (23...Bf3 24.Bf3 Qf3 25.Rg1–/+) 24.Kg1 Rab8 (24...a6 25.a4–/+) 25.Rh2 (25.Rf1 Qg6+=) 25...Bd8 26.Rf1 Qd7 (26...Bg5 27.Be4–/+) 27.Qd2 Rf7 (27...a6 28.f4 ab5 29.fe5–/+) 28.f4 Bf6 29.fe5 Be5 30.Rf7 Bf7 (30...Qf7 31.Be5 de5 32.Qg5+=) 31.Be5 de5 32.Bf1 (32.Be4 a6=) 32...Rd8 (32...a6 33.ba6 ba6 34.Qe3=) 33.Qe3= Qd4 (33...Qd6 34.Rf2 Bg6 35.Kg2=) 34.Qd4 ed4 (34...Rd4 35.Rf2 Be6 36.Rf8 Bg8 37.Ra8+/–) 35.Re2 ˝–˝. Kaschner,Armin – Blauhut,Holger, corr SOK–90–58, 1990.

7.b5 a6 8.Qb3 c6 9.a4 Be6 (9...ab5 10.ab5 Ra1 11.Ba1+=) 10.d3 (10.bc6 bc6 11.Qb7 Nbd7 12.Qc6 Rb8+=) 10...d5 (10...ab5 11.ab5 Ra1 12.Ba1+=) 11.cd5 (11.bc6 bc6 12.cd5 cd5+=) 11...cd5+= 12.e4 (12.Nf3 Nbd7 13.Ng5 Nc5=) 12...fe4 13.de4 Bf7 (13...Qb6 14.ed5 Nd5 15.Bd5 Qf2 16.Kd1–/+) 14.ed5= Nbd7 15.Qc2 Nb6 (15...Bb4!? 16.ba6 Ra6=) 16.d6 Bd6 17.Bb7 Ra7 (17...ab5 18.Ba8 Qa8 19.f3+=) 18.ba6 (18.Ba6 Nc4+/–) 18...Bb4 19.Nge2 (19.Rd1 Bd5+=) 19...Bd5 (19...Bg6 20.Qb3 Nbd5 21.0–0–0 (21.Bd5?! Nd5 22.0–0–0 Bc3 23.Nc3 Bf7 24.Nd5 Rd7+–) 21...Rb7 22.ab7+–) 20.0–0–0 (20.0–0 Qc7+=) 20...Rf7 (20...Bc3 21.Nc3 (21.Qc3?! Re8+=; worse is 21.Bc3 Qe7+=) 21...Qd6 22.a5+– (22.Nd5?! Nbd5 23.f4 ef4+–)) 21.Nd5 White launches an attack 21...Nbd5 (21...Nfd5 22.Qe4 Rd7 23.Be5+=) 22.Qb3 (worse is 22.Be5 Ba3 23.Kb1 Qb6 24.Ka1 Rd7+=) 22...Qc7 (better is 22...Rd7!?+=) 23.Kb1+– Kf8? (23...Rb7 24.ab7 Qb7 25.f4+/–) 24.Rc1 (better is 24.Bd5 Nd5 25.Qd5 Rf2+–) 24...Qd7 (24...Qd6 25.Rc8 Ke7+–) 25.Rhd1+– Qf5 (25...Rb7 26.ab7 Qb7 27.Be5+–) 26.Qc2 Qc2 (26...Qf2 27.Bd5 Rfc7 28.Qd3+–) 27.Rc2 Nb6 (27...Nc7 28.Rc4 Ba5 29.Be5+–) 28.Be5 Ne4 (28...Nfd7 29.Bd4 Re7+–) 29.Be4 Ra6 30.Bd6 (better is 30.Rd8 Ke7 31.Rc7 Kd8 32.Rf7 Nc4+–) 30...Bd6 31.Rd6 Rf2 (31...Ra4 32.Nd4 Rb4 33.Kc1+–) 32.Bd3 (better is 32.Rc7!? Rf1 33.Kc2 Kg8+–) 32...Ke7 33.Rcc6 (33.Rcc6 Ra4 34.Re6 Kf7 35.Rb6 Rh2 36.Nf4 Rh1 37.Kb2 Rh2 38.Kc3 Ra3 39.Kd4+–) 1–0. Van Esbroeck,Dirk – Schroer,K, corr ICCF TT–4–90–14, 1991.

7.d3 a5 8.b5 Nbd7 9.Na4 Qe8 10.Nh3 Nb6 ˝–˝. Boehnke,Hartmut (2135) – Gachon,Lionel (2280), EU/WS/M/003 ICCF, 2008.

7.d3 a5 8.b5= Nbd7 9.e3 f4 10.ef4 ef4 11.Nf3 Ne5 12.Ne4 (12.Ne5 de5 13.Nd5 fg3 14.hg3 Bc5 15.Be5 Bf2 16.Kd2 Ne8+/–) 12...Ne4 13.de4 Nf3 14.Bf3 Bf6 15.Bf6 Qf6 16.0–0 Bh3 17.Bg2 Bg2 18.Kg2 f3 19.Kh1 Qh6 (better is 19...c6!?=) 20.Qd5+= Kh8 If Black now would get Qh3 in, he might survive 21.h4 (better is 21.Qb7!? Qe6 22.Rac1+/–) 21...Rae8 22.Rae1 White prepares e5 22...Re5 23.Qd4 Rh5 (23...Rf4 24.Qe5 de5 25.Rd1 Rh4 26.gh4 Qh4 27.Kg1 Qg4 28.Kh2 Qg2) 24.e5–/+ Qe6 Threatening mate: Qh3 25.Kh2 de5 26.Qd5?? (better is 26.Qe4–/+) 26...Qg4–+ 27.Re4 Rh4 0–1. Blauhut,Holger – Secula,Victor, corr SOK–89–19, 1989.

7.d3 Na6 8.a3 =.

7.d3 Qe8 8.Nf3= Bd8 (8...c6 9.0–0=) 9.0–0 Kh8 (9...Qh5 10.Nd2=) 10.d4 (10.Qd2 Qh5=) 10...f4 (10...e4 11.Ne1=) 11.gf4 (11.de5 de5 12.gf4 ef4+=) 11...ef4= 12.Qd3 (12.Qd2 Qe6=) 12...Qh5 13.e4 fe3 14.fe3 Bh3 15.Bh3 Qh3 16.e4 Nc6 17.b5 Ne7 (17...Nb4 18.Qe2 Nh5 19.Ne1+=) 18.Ne1 Qg4 (18...Qe6 19.Ng2+=) 19.Ng2 (19.Qg3 Qe6 20.d5 Qd7+=) 19...Ng6 (19...c6 20.Rf4 Qg6 21.Qg3=) 20.Rf5 White gets strong initiative 20...Nh4 Threatening mate: Qxg2 21.Rf2 Be7 (21...Nd7 22.Raf1 Rf2 23.Rf2+=) 22.Raf1 (22.Qg3 Ng2 23.Kg2 Qe6+=) 22...Nh5 (22...Ng2 23.Rg2 Qe6 24.d5+=) 23.Qe2+/– Qg6 (23...Qe2 24.Ne2 (worse is 24.Re2 Nf3 25.Kh1 Nd4+=) 24...Rf2 25.Rf2+/– (25.Kf2?! Rf8 26.Kg1 Rf1 27.Kf1 Nf3=)) 24.Nd5 Rf2 25.Rf2 (25.Qf2 Bf6 26.e5 Rg8+/–) 25...Bg5 (25...Bf6 26.e5 de5 A) worse is 27.Nc7 Nf4 28.Qc2 Nh3 29.Kf1 Rc8 (worse is 29...Nf2 30.Qg6 Ng6 31.Na8+=) 30.Qg6 Ng6–/+; B) worse is 27.Nf6 B1) worse is 27...Nf6 28.de5 (28.Qe5? Ng2 29.Qg3 Ng4–+) 28...Nh5 29.Qf1+=; B2) 27...gf6 28.de5 Ng2 29.Rg2 Nf4–/+; C) 27.de5 Ng2 28.Rg2+/–) 26.Nh4 (26.Nc7 Ng2 27.Qg4 Rg8 28.Kg2 Nf6+/–) 26...Bh4+= 27.Rg2 Qf7 28.Rg4 g5 (28...Bd8 29.Qf2 Nf6 30.Rf4+=) 29.e5 (29.Ne3 Ng7+=) 29...Rf8 (29...c6!? 30.bc6 bc6+=) 30.e6+/– Qf5 (30...Qg7 31.e7 Re8 32.c5+/–) 31.Kh1 (31.e7 Re8 32.Re4 Nf4+=) 31...Qf1 32.Qf1 Rf1 33.Rg1 Rf2 34.e7 (34.Bc3 Ng7 35.Nc7 Rc2+–) 34...Ng7 (34...Re2 35.Nc7 Ng7 36.Rf1+–) 35.Bc1 h6 36.Nc7 Re2 37.Ba3 Re7 38.Bd6 Re2 39.Rf1 (39.Be5+/–) 39...Nh5 (39...Kh7!?+/–) 40.a4 (40.Be5 Kg8 41.Ne6 g4+–) 40...Re4 (40...g4 41.Be5 Kh7 42.Nd5+–) 41.Be5 Kh7 42.c5 g4 43.c6 (43.Nd5 Re2 44.Rg1 Rc2+–) 43...bc6 44.bc6 The passed pawn on c6 quickly leads to threats 44...g3 (44...Re2 45.Nd5 g3 46.hg3 Ng3 47.Bg3 Bg3 48.Rc1+–) 45.Ne6 Re2 46.Rf8 (better is 46.hg3 Bg3 47.c7+–) 46...g2 (46...Re1 47.Kg2 Re2 48.Kf3 gh2 49.Bh2 Re6+–) 47.Kg1 Bf2 (47...Nf6 48.c7 Bf2 49.Kg2 Bd4 50.Kf1 Be5+–) 48.Rf2 1–0. aspasio (2270) – rainbowTrout (2160), ICC, 1999.

7.d3 Qe8 8.Nf3 Qh5 9.0–0 f4 (9...c6 10.b5=) 10.gf4 Bh3 11.Bh3 Qh3 12.Ng5 (12.fe5 Ng4 13.e4 Rf3 14.Re1 Qh2 15.Kf1 Rf2) 12...Qh6 13.e3 Nc6 14.Kh1 ef4 15.Ne6 Ne5 Threatening mate... how? 16.Rg1 (16.Nf8?? Nfg4 17.Qg4 Ng4–+; 16.Nf4?? Nfg4 17.Qg4 Ng4–+; 16.ef4?? Nfg4 17.Qg4 Ng4–+; 16.Nc7?? Nfg4 17.Qg4 Ng4 18.h4 Qh4 19.Kg2 f3 20.Kg1 Qh2) 16...Nfg4 The mate threat is Qxh2 17.Rg4 Qe6 18.Rf4 Rf4 (18...c6 19.Qe2+=) 19.ef4 Ng6 20.Nd5 Rf8 (20...c6 21.Nc7 Qh3 22.Qf1 (22.Na8?? Nf4 23.Qf1 Qf3 24.Kg1 Ne2 25.Qe2 Qe2–+) 22...Qf3 23.Qg2 Qg2 24.Kg2 Nf4 25.Kf3–+) 21.Nc7+/– Qh3 22.Nd5 ˝–˝. Woelfelschneider,Peter – Schwellnus, 2010.

7.d4 e4 +=.

7.Nf3 c6 8.0–0 e4 9.Nd4 c5 10.bc5 dc5 11.Nb3 Nc6 (11...a5 12.a4= Be6 13.d3=; 11...Nbd7 12.d3 Nb6 13.Ba3=) 12.d3 ed3 (12...Be6 13.de4 Bc4 14.ef5+=) 13.ed3 (13.Qd3 Qd3 14.ed3 Nb4+=) 13...Nd4 (13...f4 14.Nd5=) 14.Re1 Nb3 (14...Kh8 15.Nd4 cd4 16.Nb5+=) 15.ab3 Rb8? (better is 15...f4!?+=) 16.Ra7+– Bd6? (better is 16...f4+–) 17.Nb5 (17.Nb5 Qb6 18.Bc3+–) 1–0. pierre (2170) – boko46, internet, 2008.

7.Nf3 c6 8.0–0 e4 9.Nd4 d5 A) 10.c5 A1) 10...b6 11.Na4 Qc7 12.a3 (12.f3 Na6 13.cb6= ab6 14.b5 cb5=) 12...f4 13.d3 Na6 14.cb6 ab6+=; A2) 10...a5 11.a3 (11.Qa4 b5 12.cb6 Qb6 13.b5 c5 14.Nb3 c4–/+) 11...ab4 (11...Qc7 12.f3 b6 13.Na4 bc5 14.bc5 ef3=; 11...b6 12.Na4 ab4 13.Nb6 ba3 14.Qc2 Ra5=) 12.ab4 Ra1 13.Qa1 f4 14.gf4 Qc7=; B) 10.cd5 B1) 10...cd5 B11) 11.b5 a6 (11...Qb6 12.e3 Be6 13.a4 a5 14.f3 Nbd7=; 11...Qd6 12.e3 Qb4 13.Rb1 Bc5 14.Na4 Bd6=; 11...Bc5 12.Na4 Bd6 13.Rc1 f4 14.d3 e3=) 12.Qa4 Qb6 13.e3 Be6 14.Bh3 g6=; B12) 11.Qa4 Qb6 12.b5 Bd7 13.Rac1 Na6 14.Bh3 g6=; B2) 10...Nd5 11.Qb3= Bf6 12.Nd5 Qd5 13.Qd5= cd5 14.Rab1 Na6=.

7.Nf3 c6 8.0–0 Be6 9.d3 Nbd7 10.Ng5 Bf7 11.Nf7 Rf7 12.a4 Nf8 13.a5 d5 14.cd5 cd5 (14...Bb4!? 15.dc6 bc6+/–) 15.Qb3+/– d4 16.Nd5 Ne6 17.a6 Rb8 18.ab7 Kf8 19.Ra7 Qd6 20.Ra8 Bd8 (20...Nd7+–) 21.Nf6 Rf6 22.Ba3 Ke8 (22...Bc7 23.b5 Kf7 24.Bd6 Bd6 25.Qd5+–) 23.b5 Qc7 24.b6! Rb7 (24...Qb6 25.Qa4 Double attack (25.Rb8 Deflection)) 25.bc7 (25.bc7 Rb3 26.c8Q+–) 1–0. Fournier,Frederic (1820) – Ostrov (1945), Active, 2002.

7.Nf3 Nc6 8.b5 Nb8 9.0–0 Nbd7 10.Ng5 Nb6 (10...Nb8 11.Nd5 c6 12.bc6 bc6 13.Ne7 Qe7 14.Rb1+=) 11.Qb3+/– Nfd5 (11...d5!? 12.cd5 Qd6+/–) 12.c5+– (12.Nd5?! Bg5 13.f4 Bf6+=; 12.cd5?! Bg5 13.f4 ef4 14.gf4 Bf6=) 12...Kh8 13.cb6 (13.Bd5?! Nd5 14.Nd5 Bg5=) 13...Nc3 14.Nf7 (14.Bc3?! Bg5 15.f4 ef4+=; 14.Qc3?! Bg5 15.bc7 Qe7+–) 14...Rf7 15.Qf7 (15.Bc3?! Rf8 16.bc7 Qc7=) 15...Na4? (15...Ne2 16.Kh1 ab6+–) 16.bc7 Qd7 (16...Qf8 17.Qf8 Bf8+–) 17.Bd5 1–0. Fournier,Frederic (1785) – johny83 (1850), Active, 2002.

7.Nf3 e4 8.Nd4 c5 9.bc5 dc5 10.Nc2 Nc6 11.0–0 Be6 12.d3 ed3 (12...Qc7 13.Re1+=) 13.ed3= Re8 (13...Qd7 14.Re1=) 14.Re1 (14.Bc6 bc6 15.Re1 Qd6=) 14...Bf7 (14...Qd7 15.Re6 Qe6 16.Bd5 Nd5 17.cd5=) 15.Qf3 White begins to deal mighty blows 15...Qd7 16.Nd5 Rad8 (16...Nd5 17.cd5 Nd8 18.Ne3=) 17.Nce3 (better is 17.Ne7!? Re7 18.Re7 Qe7 19.Qf5+=) 17...Nd5= 18.cd5 Nb4 (18...Nd4 19.Bd4 cd4 20.Nf5+=) 19.Nf5 Bf8 (19...Bd5 A) 20.Re7? Re7 (20...Bf3?! 21.Rd7 Rd7 22.Bf3=) 21.Ne7 Qe7–+; B) 20.Ne7? Re7 21.Re7 Qe7–+; C) 20.Qg4 Bf8 21.Bd5 Nd5 22.Nh6 Kh8 23.Qd7 Re1 24.Re1 Rd7 25.Re8+–) 20.Re8 Be8 21.Bh3 (21.Bh3 Qd5 22.Nh6 gh6 23.Qf6+–) 1–0. Romischke – Kern, Hessen clubgame, 1997.

7.Nf3 Ne4 8.Qb3 Nc3 9.c5 Rf7 10.cd6 cd6 11.Bc3 g5 (better is 11...Bf6=) 12.h4+/– g4 13.Ng5! Bg5 (13...Bg5 14.hg5 Combination) 14.Bd5 (14.Bd5 Bd2 15.Bd2+/–) 1–0. Hoysniemi,Yrjoe – Schiller, Thematic corr ICCF, 1974.

6.d4 e4

7.e3 d5

8.c5 0–0 9.Ne2 (9.Nh3 a5 10.ba5 Nc6 11.0–0 Na5 12.Nd2 b6 13.cb6) 9...b6 10.0–0 (10.a3 a5 11.0–0 ab4 12.ab4 Ra1 13.Ba1) 10...a5 11.a3 ab4 12.ab4 Ra1 13.Ba1.

8.c5 b6 A) 9.Nd2 a5 10.a3 ab4 11.ab4 Ra1 12.Ba1 c6 13.Ne2; B) 9.f3 a5 (9...0–0 10.Nd2 a5 11.cb6 ab4 12.bc7 Qc7 13.Ne2) 10.cb6 Bb4 11.Bc3 Bc3 12.Nc3 cb6 13.Nge2; C) 9.a3–/+ 0–0 (9...a5 10.Ne2 ab4 11.ab4 Ra1 12.Ba1 0–0 13.0–0; 9...c6 10.Ne2 a5 11.0–0 ab4 12.ab4 Ra1 13.Ba1) 10.Ne2 a5 11.0–0 ab4 12.ab4 Ra1 13.Ba1.

8.c5 Be6

9.Ne2+= 0–0 10.0–0 (10.Nf4 Bf7 11.0–0 b6 12.f3 a5 13.a3) 10...Qd7 11.Nbc3 b6 12.Nf4 c6 13.a3.

9.Ne2+= a5 10.a3 (10.Nf4 Bf7 (10...Bd7 11.ba5 Nc6 12.Nc3 Bc8 13.0–0) 11.b5 Qd7= (11...0–0 12.0–0 b6 13.Ba3) 12.Nc3 a4 13.0–0; 10.ba5 Nc6 11.0–0 0–0 12.Nf4 Bc8 13.Nd2) 10...0–0 (10...ab4 11.ab4 Ra1 12.Ba1 0–0 13.Nf4) 11.Nbc3 (11.b5 Bf7 12.0–0 b6 13.c6) 11...c6 (11...ab4 12.ab4 Ra1 13.Qa1+=) 12.Na4 (12.Nf4 Bf7= 13.0–0; 12.ba5 Qa5 13.0–0) 12...b5 (12...ab4 13.ab4+= (13.Nb6 ba3 14.Nf4+=)) 13.Nb6 (13.cb6 ab4 14.Nc5 Bf7+=) 13...Ra7 Black prepares the advance a4 14.Bc3 (14.ba5 Ra5 15.a4 Nbd7=) 14...a4 (14...ab4 15.ab4 Ra1 16.Qa1+=) 15.Qc2 (15.Nf4 Bf7+=) 15...Nbd7 (15...Qe8 16.Nf4 Bd8 17.0–0+=) 16.Nd7 Bd7 (16...Qd7 17.0–0–0+=) 17.0–0–0 Qe8 (17...Ng4 18.Rdf1=) 18.Rdf1 (18.h4 Be6=) 18...Bd8 (18...Qf7 19.Nf4+=) 19.Qd2 (19.Nf4 Bc7=) 19...Bc8 20.Ng1 (20.Bb2 Bc7+=) 20...Re7 21.Re1 Bc7 22.Ne2 Qf7 23.f4 (23.h3!?+=) 23...ef3!–/+ 24.Bf3 Ne4 (24...Rfe8 25.Nf4–/+) 25.Be4 (25.Qc2 Rfe8–/+) 25...fe4 26.Ref1?? (better is 26.Bb2–/+) 26...Qf1–+ 27.Rf1 Rf1 28.Kc2 Rf2 29.Qe1 (29.h4 Bh3–+) 29...Ref7 30.Kd1 (30.Kc1 Rf1 31.Nf4 Re1 32.Be1 g5–+) 30...Rf1 (30...Bg4!? 31.h3 Be2 32.Qe2 Re2 33.Ke2 Bg3 34.Bd2–+) 31.Nf4 Re1 32.Be1 g5 33.Ng2 (33.Bd2 gf4 34.ef4 Bg4 35.Ke1 Rf5–+) 33...Bh3 (better is 33...Rf1!? 34.Nf4–+) 34.Nf4 gf4 35.gf4 (35.ef4 Bg4 36.Kc2 Re7–+) 35...Bf4! 36.ef4 Rf4 37.Bg3 Rf3 0–1. Remillard,John – Moffat,Ron, Summer Open Winnipeg, 1999.

9.Ne2+= Nc6 10.a3 (10.Qa4 Qd7 11.Nbc3 0–0 12.b5 Nd8 13.0–0) 10...Qd7 11.0–0 h5 12.Nbc3 h4 13.Qd2.

9.Ne2+= Qd7 10.0–0 (10.Nf4 0–0 11.0–0 Bf7 12.Nc3 a6 13.f3) 10...0–0 11.Nbc3 b6 12.Nf4 c6 13.a3.

9.Nh3 A) 9...Nc6 10.Nf4 (10.a3 Qd7 11.0–0 a5 12.b5 Na7 13.a4; 10.Bc3 Bd7 11.Nf4 g5 12.Nh5 g4 13.Nf4) 10...Bc8 11.a3 g5 12.Nh5 0–0 13.0–0; B) 9...a5 10.Nf4 (10.ba5 Ra5 11.0–0 b6 12.Ng5 Bd7 13.cb6) 10...Bf7 11.b5 Qd7 12.Nc3 0–0 13.0–0; C) 9...Qd7 10.0–0 (10.Nf4 Na6 11.Ne6 Qe6 12.Qa4 c6 13.Nd2) 10...Na6 11.Qb3 c6 12.Nf4 Nc7 13.Nc3.

5.c4 g6

6.Nc3 c6 7.Nf3 Bg7 8.Qb3 (8.d3 0–0=) 8...Qe7 (8...e4 9.Nd4=) 9.0–0 0–0 10.a4 Kh8 (10...e4 11.Nd4=) 11.a5 (11.d3 Be6=) 11...Be6 (11...Na6 12.b5 Nc5 13.Qb4=) 12.d3 a6 (12...Na6 13.Ng5=) 13.Na4 (13.Ng5 Bg8+=) 13...Nbd7= 14.Qc2 (14.Ng5 Bg8=) 14...Bg8 15.Nd2 (15.Rab1 d5=) 15...Rfe8 (15...d5 16.Ba3 Qe6 17.b5=) 16.Nb3 g5 (16...Rab8 17.Rac1=) 17.e3 (17.Rfe1 g4=) 17...Qf7 (17...Rad8 18.Rae1=) 18.Nb6 (18.Nc3 Qg6=) 18...Rad8 (18...Nb6 19.ab6 Rad8 20.Ra3=) 19.Nd2 (19.Nd7 Rd7 20.Rac1 Qh5=) 19...Nb6= 20.ab6 d5 (20...Nd7 21.c5 Qg6 22.Ra5=) 21.Nf3 (21.b5 cb5 22.cb5 ab5=) 21...e4 22.de4 (22.Ne5 Qh5=) 22...de4+= 23.Ne5 Qe6 (23...Re5 24.Be5 Qc4=) 24.Rfd1 (24.Ra5 g4=) 24...Nh5 (better is 24...Rd1!? 25.Rd1 Nh5–/+) 25.Ra5= Bf6 (25...Qe7 26.Rc5=) 26.h3 (26.Rd8 Rd8 27.g4 fg4 28.Be4 Qd6+=) 26...Ng7= 27.g4 White is in command 27...Rd1 (27...Be5 28.Re5 (28.Be5 Qc4 29.Bg7 Kg7 30.Qb2 Kg6 31.Rd8 Rd8 32.Rf5 Rd1 33.Kh2 Rd4+–) 28...Rd1 29.Qd1+–) 28.Qd1 Rd8 (28...Qe7 29.gf5 Qb4 30.Qa1 Qb6 31.Ng6 hg6 32.Bf6+–) 29.Qa1+/– Ne8 (better is 29...fg4!? 30.hg4 Rf8+/–) 30.gf5+– Qd6 31.Be4 Qd1 (31...Bg7 32.c5 Qd2 33.Bd4 Qb4 34.f6 Nf6 35.Nc6 bc6 36.Bf6 Rd1 37.Qd1 Bf6 38.Qb1 Qb1 39.Bb1+–) 32.Kg2 Qa1 33.Ba1 Kg7 34.c5 (34.Bc6 bc6 35.Ra6 Nd6 36.Ra7 Kf8 37.Ng6 hg6 38.Bf6 Ke8 39.Bd8 Kd8 40.Ra8 Ke7 41.Rg8 gf5+–) 34...Rd1? (34...Bd5 35.Bd5 Rd5 36.Nc6 Ba1 37.Ra1 bc6 38.Ra6 Rd8+–) 35.Bd4 Bd5 (35...Be5 36.Be5 Nf6 37.Bc6 bc6+–) 36.Bd5 cd5 37.Ra6! ba6 (37...Rb1 38.Ra8 Be5 39.Be5 Kf7+–) 38.b7 (38.b7 Rd4 39.ed4+–) 1–0. Hort,Vlastimil – Marszalek,Rafal, Praha, 1969.

6.Nc3 Bg7 7.Nh3 =.

6.d3 Bg7 7.e3 0–0 8.Ne2 a6 (8...e4 9.0–0=) 9.Nd2 Nc6 10.a3 Rb8 (10...d5 11.0–0=) 11.0–0 g5 (11...Qe7 12.d4=) 12.b5 ab5 (12...Ne7 13.Qb3 Be6 14.a4=) 13.cb5 Ne7 14.Qb3 Rf7 (14...Kh8 15.f4 Ng4 16.fe5 de5 17.Rf3+=) 15.Rac1 Ng6 16.f4 gf4 17.ef4 (17.gf4 Ra8+=) 17...Qe7 18.Nf3 h6 (18...Be6 19.Qc2 ef4 20.Ng5 fg3 21.Ng3+/–) 19.Rfe1 (19.fe5 de5 20.Qa4 Qd6+=) 19...Be6 20.Qc2 Nd5 21.Nc3 Nc3 22.Bc3 Qd7 23.Qa4 ˝–˝. Miralles,Gilles – Hofmann,Michael, Groningen, 1982.

6.d3 Bg7 7.e3 0–0 8.Ne2 Nc6 9.b5 Ne7 10.0–0 g5 11.Nbc3 c6 12.a4 Be6 13.Qd2 Qd7 14.f4 gf4 15.ef4 a6 16.Rae1 ab5 17.ab5 c5 (17...e4 18.Nd4 d5 A) worse is 19.de4 de4 (19...fe4?! 20.f5 Nf5 21.Ne6 Qe6 22.Bh3=) 20.c5 Bc4–/+; B) 19.c5=) 18.Ra1 Bh6 19.Qe3 Ng4 (19...e4 20.Na4 Ng4 21.Qd2+=) 20.Qf3+/– Ra1 21.Ra1 b6 22.Ra8 (22.Ra6 Rb8+/–) 22...e4+= 23.Rf8 Bf8 24.de4 Bc4 25.ef5 Qf5 26.h3 (26.Ne4!? d5 27.Qc3+=) 26...Nf6= 27.Qe3 d5 28.g4 Qd7 29.Qe5 Bg7 30.Qb8 Ne8 Black intends d4 31.Ng3 d4 32.Nce4 Nc8 (worse is 32...Qb5 33.Nd6 Qb2 34.Qe8 Bf8 35.Nc4 Qc1 36.Bf1+–) 33.Nf5 Bf8 (33...Bb5? 34.Qc8 Qc8 35.Ne7 Kh8 36.Nc8+–) 34.Qe5 Na7 (34...Qb5? 35.Nd2 Bg7 36.Ng7 Ng7 37.Nc4+–) 35.Qe8 (better is 35.Qb8!?=) 35...Qe8–/+ 36.Nf6 Kf7 37.Ne8 Ke8 38.Nd4 cd4 39.Bd4 Nb5 40.Bb6 Nc3 41.Bc6 Kf7 42.Bc7 Bd5 43.Bd5 Nd5 44.Bb8 Bg7 45.Kg2 Kg6 46.Kf3 Kf6 (46...Bf6 47.Ba7+=) 47.Be5= Kf7 48.Bb8 (48.Bg7!? Kg7 49.Ke4 Nf6 50.Ke5 Nd7 51.Kd6=) 48...Bb2+= 49.Ke4 Nf6 50.Kf5 Ne8 51.Ke4 1–0. Law,Steve (1870) – Parry,Andrew, TE.2004.P.01708, 2004.

6.d3 Bg7 7.Nf3 a5 8.b5 0–0 =.

6.d4 ed4 7.Qd4 Bg7 8.Qe3 Qe7 (8...Kf7 9.Nf3 Re8 10.Qd3=) 9.Qe7 Ke7 10.Na3 (10.Nf3 Nc6 11.a3 Kf7+=) 10...a6 (10...Nc6 11.Bc3=) 11.Nh3 (11.Nf3 Nc6 12.Bc3 Re8=) 11...Nbd7 (11...Nc6 12.Bc3=) 12.0–0+= Kf7 (12...Re8 13.e3+=) 13.Ng5 Ke7 14.Rfe1 h6 15.Nh3 Kf7 16.Nf4 Re8 17.Rad1 g5 18.Bf6 (18.Nd3 Ne4 19.Bf3 Bb2 20.Bh5 Ke6 21.Nb2 Re7=) 18...Nf6 19.Bd5 Nd5 (19...Ke7!? 20.Ng6 Kd8+=) 20.Nd5+/– Re7 (20...Rb8 21.Nc7 Re4 22.Nd5+=) 21.Ne7 Ke7 22.Rd3 Be6 23.e4 f4 24.Re2 Be5 25.Kg2 Rf8 26.Rc2 (26.f3 g4 27.Rf2 gf3 28.Rdf3 Rg8 29.Rf4 Bf4 30.Rf4 Rg5+=) 26...f3 27.Rf3 (27.Kf1 g4+=) 27...Bh3 28.Kh3 Theme: Deflection from f3 28...Rf3 29.Nb1 Bd4 Exerts pressure on the backward pawn (29...h5 30.Kg2 g4 31.h3+=) 30.Kg2+= g4 31.h3 h5 32.hg4 hg4 33.Re2 Ke6 34.b5 a5 35.Kf1 (35.Nd2 Rc3+=) 35...Ke5 (35...a4 36.Kg2=) 36.Rc2 (36.Nd2!? Rc3 37.Kg2+=) 36...Bc5+= 37.Re2 Bd4 (37...Bb4 38.Kg2+=) 38.Kg2 (38.Nd2 Rc3=) 38...Bc3 39.Rc2 (39.Na3 Kd4=) 39...Bd4 (39...Bb4 40.Nd2 Bd2 41.Rd2+=) 40.Re2= Bc5 (40...Bc3 41.Na3=) 41.Nd2 Rc3 42.f4 The passed pawn on f4 quickly leads to threats 42...Kd4 (42...gf3 43.Nf3 Ke6 44.e5+=) 43.Nb3+= Kd3 44.Kf1 (44.Rd2 Ke4 45.Na5 b6=) 44...Kc4 (44...Be3!?–/+) 45.Nc5 Kc5 46.f5 Rg3 47.f6 Rh3 48.f7 Rh8 49.e5 (49.e5 de5 50.Re5 Kc4 51.Re8+–) 1–0. Diener,Rudolf – Meeussen,Leo, corr ICCF EU/M24, 2000.

6.e3 Bg7 7.d3 0–0 8.Ne2 Nc6 9.b5 Ne7 10.Nd2 g5 11.h4 (11.0–0 Qd7+=) 11...gh4 (11...g4 12.Qb3=) 12.Rh4+= Ng6 13.Rh1 Qe8 14.Qb3 f4 15.gf4 ef4 16.Ne4 Qe7 17.Ng5 h6 18.c5 Kh8 19.Be4 Ng4 20.Rh5 (20.c6 bc6 21.Bc6 Rb8=) 20...Bf5 (better is 20...Bb2!? 21.Qb2 Qg7 22.Qg7 Kg7 23.Bb7 fe3 24.fe3 Bb7 25.Ne6 Kf6 26.Nf8 Rf8=) 21.f3 N4e5 (21...Nf6 22.Rh2 (22.Bf5 Nh5 23.Bg6 Qg5 24.Bh5 Qh5 25.Bg7 Kg7 26.Qc3 Kh7–+) 22...Be4 23.cd6 (23.Ne4?! dc5 24.Nf6 Bf6+=) 23...cd6 A) 24.fe4?! Ng4 (worse is 24...fe3 25.Ne6+/–) 25.Ne6 Bb2 26.Nf8 Qf8 27.Qb2 N6e5+=; B) 24.de4 fe3 25.Ne6+– (25.Qe3 Ne5 26.Rc1 Nfg4 27.fg4 Ng4 28.Rh6 Nh6 29.Bg7 Qg7+/–)) 22.d4 d5 (22...Ng4!? 23.fg4 Be4+/–) 23.Qd5+– Rad8 24.Qb3 Be4 25.fe4 Ng4 26.Qe6 (26.Ne6 f3 27.Nd8 Qd8+–) 26...Qe6 27.Ne6 f3 28.N2f4 (28.Nd8 Ne3 29.Nb7 Ng2 30.Kf2 fe2 31.Kg2 Nf4 32.Kf2 Nh5 33.Ke2 Ng3 34.Ke3 h5+–) 28...Nf4 29.ef4 (29.Nf4?! Rf7+=) 29...Ne3?? (better is 29...Rde8 30.f5 Rf7+–) 30.Kd2 (better is 30.Kf2 Nc4 31.Bc3+– (31.Nf8?! Rf8 32.Bc3 Rf4+–; worse is 31.Nd8 Rd8 32.Bc3 Na3+–; worse is 31.Ng7 Kg7 32.Rg1 Kh7+–)) 30...Nc2?? The pressure on d4 grows (better is 30...Nc4 31.Kd3 Nb2 32.Ke3 f2+=) 31.e5 (better is 31.Kc2 Rde8 32.Nf8 Re4 33.Ng6 Kh7 34.Ne5 Rf4 35.Rf1+–) 31...Na1 32.Nc7?? (better is 32.Ba1 b6 33.Ke3+–) 32...f2–+ 33.Rh1 (33.Rh1 Be5! 34.Ne6 Bf4 35.Ke2–+). Kalinin,Oleg (2395) – Hnydiuk,Aleksander (2220), Zabrzanski Wrzesien op Poland, 1994. (=1.c4 f5 2.b4 e5 3.Bb2 d6 4.g3 Nf6 5.Bg2)

6.e3 Bg7 7.Ne2 0–0 8.Nbc3 Nc6 9.a3 e4 10.0–0 (10.d4 Be6 11.d5 Ne5 12.Ne4 Ne4 13.de6 Nf2 (worse is 13...Nc4 14.Bg7 Kg7 15.Qd4 Qf6 16.Rc1 Qd4 17.Nd4+=) 14.Kf2 Ng4 15.Kg1 Bb2=) 10...Be6 (10...Ne5 11.Qb3–/+) 11.d3+= ed3 12.Qd3 Ne5 13.Qc2 c6 14.c5 dc5 15.bc5 Nc4 16.Nd4 Bf7 (16...Nb2?? 17.Ne6 (17.Qb2?! Bc8=) 17...Qe7 18.Nf8+– (18.Qb2?! Qe6 19.Qb7 a5+/–; 18.Ng7?! Nc4+–)) 17.Na4 Qe7 18.Rfb1 Ne4 Exerts pressure on the isolated pawn 19.Bc3 Rad8 20.Bf1 Ne5 21.Rd1 (21.Bg2 Bd5–/+) 21...Ng4 22.Be1 f4 (22...Nef2!? 23.Bf2 Ne3–/+) 23.gf4+= Bd4 24.Rd4 Rd4 25.ed4 Bd5 26.Nc3 (26.h3!? Rf4 27.Qc1–+ (27.hg4 Rg4 28.Bg2 Nd2 29.f3 Qe3 30.Kh2 Rg2 31.Kg2 Qf3 32.Kg1 Qg2)) 26...Nc3–/+ 27.Qc3 Rf4 28.Qg3 Qf6 (better is 28...Qe4!? 29.Bg2 Qd4–/+) 29.Rd1 0–1. Weber,Daniel – Gerbert,Philipp, FRG–ch U20 Wallrabenstein, 1977. (=1.c4 f5 2.b4 e5 3.Bb2 d6 4.g3 Nf6 5.Bg2)

6.Nf3 Bg7 =.

6.Nh3 Bg7 =.

5.e3 Be7

6.d3 0–0 7.Ne2 Qe8 8.Nd2 Na6 9.a3 c6 10.h3 Nc7 11.c4 Ne6 12.f4 ef4 13.ef4 d5 14.0–0 b6 (14...a5 15.Qb3=) 15.Re1+= Qd8 16.Qb3 Kh8 (16...a5 17.Nd4 Nd4 18.Bd4 ab4 19.ab4 Ra1 20.Ba1+=) 17.Rad1 Bb7 18.Nf3 h6 (better is 18...a5!?+=) 19.Nh4+– Rf7 20.Nf5 Bf8 21.cd5 cd5 22.Nc3 Qd7 (22...Nc7 23.Ne4!+–) 23.Re5 (better is 23.Nh6!? Re7 24.Nf5+–) 23...Nc7 24.Rde1 Ba6 (24...a5 25.R1e2+–) 25.Nd5 (better is 25.Bd5!? Ncd5 26.Nd5 Bb7+–) 25...Nfd5 26.Nh6 Rf6? (26...Re7!? 27.Rc1 Re5 28.Be5 Rc8 29.Rc7 Rc7 30.Bd5 Qh3+/–) 27.Ng4 (better is 27.Rd5!? Nd5 28.Bf6 Bb7+–) 27...Rd6 28.Rh5 Kg8 29.Be4 Be7? (29...Re8+–) 30.Bh7 Kf8 31.Bf5 Qb5 (31...Rh6 32.Rg5 Bg5 33.Bd7 Rh3 34.fg5+–) 32.Ne5 (32.Rh8 Kf7 33.Ne5 Kf6 34.Nc6 Kf5 35.Ne7 Ne7 36.Qf7 Rf6 37.Qh5 g5 38.Qg5) 32...Kg8+– 33.Bh7 Kf8 34.Ng6 (34.Ng6 Ke8 35.Ne7+–) 1–0. Bach,Mathias (2305) – Strand,H (2060), Politiken Cup, Helsingor DEN, 2009.

6.Ne2 0–0 7.0–0 c6 8.c4 Be6 9.Qc2 Nbd7 (9...Qb6 10.a3+=) 10.d3 Rc8 (10...a5 11.ba5 Qa5 12.Nbc3+=) 11.Nd2 d5 12.a3 Qe8 13.Nf3 Bd6 (13...e4 14.Nd2+=) 14.Ng5 Bf7 (14...c5 15.b5=) 15.Nf7 Qf7 (15...Rf7 16.Bh3=) 16.cd5 (16.c5 Be7=) 16...cd5 17.Qb3 Rc7 (17...Rfe8 18.f4 e4 19.Nd4=) 18.Nc3+= Can d5 get defended? 18...a6 (18...e4!?+=) 19.Nd5+/– Kh8 20.Qa2 Rc2 21.Nf6 Qf6 (21...Nf6!? 22.Rfc1 Rc1 23.Bc1 Qe7+/–) 22.Qb3 (22.Bb7 a5 23.d4 e4+–) 22...Rc7 Black plans f4 23.Rac1 Rfc8 (23...b5!?+–) 24.Bb7! Rc1 (24...Rb7 25.Rc8 Pinning (25.Rc8 Deflection; 25.Rc8 Overloading)) 25.Rc1 Rc1 26.Bc1 f4 (26...a5 27.Qa4 Nf8 28.Qa5+–) 27.ef4 (27.Qa4 fg3 28.fg3 Nb8+–) 27...ef4 28.Bb2 Qe7 29.Qc3 Nb6 (29...fg3 30.hg3 Nf8 31.Ba6+–) 30.Be4 (30.Qc6 Nd7+–) 30...fg3 31.hg3 Bc7 (31...Qg5 32.Qc6 Qd8 33.Bd4+–) 32.Qc6 Kg8 (32...Qd8 33.Qe6 Na4 34.Ba1+–) 33.Bd4 (better is 33.a4 Bd8 34.a5+–) 33...Qd8 (33...Qd7+–) 34.Qe6 Kh8 35.Qf7 (35.Qf7 Be5 36.Be5+–) 1–0. Jeschke,Holger (1900) – Ahrens,Timo (1870), Schleswig Holstein–ch, 2001.

6.Ne2 0–0 7.0–0 c6 8.c4 Be6 9.d3 Nbd7 10.Nd2 d5 11.d4 e4 (worse is 11...dc4 12.de5 Nd5 13.Nd4+/–) 12.c5 g5 13.Qa4 a6 14.Nb3 Rf7 15.Na5 Qc7 16.Qc2 Nf8 17.a4 Ng6 18.Ra3 Rg7 19.f4 h5? (better is 19...ef3 20.Rf3 Ne4=) 20.fg5+/– Ng4 (20...Nh7!? 21.h4 Rb8+/–) 21.h3+– Nh2? (21...Ne3 22.Re3 Bg5+–) 22.Kh2 h4 23.Nf4 Bd7 24.gh4 Nh4 25.g6! Rg6 (25...Rg6 26.Kh1 Decoy; 25...Ng6 26.Kh1 Decoy) 26.Kh1 Rg7 27.Bc3 (better is 27.Rf2+–) 27...Be8?? (27...Ng2 28.Ng2 Kf7+–) 28.Ne6 Qg3 29.Ng7 Kg7 30.Be1 Qc7 31.Rf4 Ng6 32.Rf5 Bd7 33.Rh5 Rg8 34.Bf1 Kf8 35.Qh2 Qd8 (35...Qc8 36.b5! ab5 37.ab5+–) 36.Nb7 (36.Nb7 Qa8 37.Qc7+–) 1–0. marekt – sead, ChessWorld.net, 2012.

6.Ne2 0–0 7.0–0 c6 8.d4 e4 9.Nd2 d5 10.a3 Be6 11.Nf4 Bf7 12.Rc1 a5 13.c3 Nbd7 14.Nb3 ab4 15.cb4 Nb6 16.Na5 Qd7 17.Qc2 g5 18.Ne2 Bh5 19.f3 ef3 20.Bf3 Bf3 21.Rf3 Ne4 22.Nc3 g4 23.Rff1 Nd6 24.Na4? (better is 24.Rce1!?–/+) 24...Na4–+ 25.Qa4 Nc4! 26.Rc4 (26.Nc4 b5 Double attack (26...Ra4 Pinning; 26...Ra4 Deflection; 26...b5 Decoy)) 26...dc4 27.Qc2 b5 28.Qg2 Rac8 29.Re1 Bg5 30.e4? (30.Bc1–+) 30...fe4 31.Re4 Rce8 32.Re8 Qe8 0–1. Araboga,Mesut – Bebchuk,Leonid (2325), 9th Afro–Asian CC Champ, Prel Section D, 2006.

6.Ne2 0–0 7.d3 Nbd7 8.0–0 Qe8 9.c4 c5 10.b5 Rb8 11.a4 b6 12.a5 (12.Nec3 Qg6+=) 12...Bb7 13.Nd2 Bg2 14.Kg2 Qh5 (14...a6!?=) 15.ab6 ab6 16.Nc3 Qd1 17.Rfd1 (worse is 17.Nd1 d5+=) 17...Ra8 18.Ra6 Kf7 19.e4 g6 20.Rda1 Rab8 21.Ra7 Rfc8 22.f4 Ke8 23.ef5 gf5 24.Nd1 Kd8 (better is 24...Ng4+–) 25.Ne3 Rc7 26.Nf5 Bf8 27.Kf3 Rbb7 (27...ef4 28.gf4 d5 29.Be5 Ne5 30.fe5+–) 28.Rb7 Rb7 29.Ra8 Rb8 30.Ra7 Rc8 31.fe5 de5 32.Ne4 Rc7 (32...Ne4 33.Ke4 Rc7 34.Ra8 Rc8+–) 33.Rc7 Kc7 34.Nf6 1–0. marekt – fluxGuardian, ChessWorld.net, 2012.

3.g3 Bf5

4.Bg2 Nc6 5.a3 Nf6 (--> 3.g3 Nf6 4.Bg2 Nc6 5.a3 Bf5).

4.Bg2 e4 5.d3 Nf6 6.de4+= Be4 7.Bf6+/– Bg2 8.Bd8+– Kd8 9.f3 Bh1 10.Kf2 Nc6 11.b5 Ne5 12.Nh3 Bf3 13.ef3 Be7 14.f4 Nd7 15.Qd5 c6 16.bc6 bc6 17.Qc6 Rc8 18.Qa4 Bf6 19.c3 Nc5 20.Qa7 Re8 21.Qf7 h6 22.Qd5 Ne4 23.Kg2 Nc3 24.Qd6# 1–0. guest3315 – guest2063, ICC, 2006.

4.Bg2 c6

5.b5 cb5 6.Bb7 Nd7 7.Ba8 Qa8 8.Nf3 +/–.

5.b5 Qb6 6.a4 Nf6 7.Nf3 cb5–/+ 8.ab5 Qb5 9.Ba3 Nc6 10.Nc3 Qc4 11.0–0 Be7 12.Nh4 Be4?? 13.Ne4+/– Ne4 14.d3 Qb5 15.Be4 Bh4 16.gh4 Rd8 17.c4 Qa6 18.Bd6! Qb6 19.Bc6 Qc6 20.Be5 0–0 21.Ra7 Qc5 22.Qa1 Rfe8 23.Bg7 Rd6 24.Ra5 Rg6 25.Kh1 Qc6 26.e4 Rg7 27.Rg1 Rg1 28.Qg1 Kf8 29.Rd5 Qf6 30.Qg3 Re6 31.Qb8 Kg7 32.Rg5 Kh6 33.Qf8 (33.Qf8 Qg7 34.Qg7) 1–0. coloplayah (2070) – portos (2025), net–chess.com, 2006.

5.b5 Qd7 6.h4 a6 7.c4 Be7 8.Nf3 Nf6 9.0–0 h6 10.Nc3 Bh3 11.bc6= Nc6 12.Nd5 Bg2 13.Kg2 Rb8 14.d4 ed4 15.Bd4 Nd4 16.Nd4 b5 17.Ne7 Qe7 18.Nc6?? Qe4–+ 19.f3 Qc6 20.cb5 ab5 21.Qb3 0–0 22.Rfc1 Qd7 23.e4 Rfe8 24.Rd1 Qc6 25.Rac1 Qb6 26.Qb4 Red8 27.Rc2 Rb7 28.Rcd2 Ne8 29.e5 Rbd7 30.a4 d5 31.ab5 Nc7 32.Rb1 Rb8 33.Qg4 Re7 34.f4 Rd8 35.Qf3 d4 36.Qe4 Nb5 37.Qd3 Rd5 38.Rdb2 Qc6 39.Kh2 Rb7 40.Ra1 Rb8 41.Ra5 Qd7 42.Ra3 Qe8 43.Ra5 Qc6 44.Ra3 ˝–˝. coloplayah (2015) – sammyo (1930), net–chess.com, 2006.

5.Nf3 Nd7 6.a4 Ngf6 7.c4 Be7 8.0–0 0–0 9.Nc3 d5 10.cd5 cd5 11.Qb3 d4 12.Nd5 Be6 13.Ne7 Qe7 14.Qa3 Rac8 15.b5 Qa3 16.Ba3 Rfe8 17.Rfc1 Rc1 18.Rc1 Nd5 19.Ng5 f6 20.Ne6 Re6 21.Bd5 Kf7 22.Rc7 1–0. usingprogram (2005) – emilioo1, internet, 2013.

5.Nf3 Nf6 6.0–0 Be7 7.d3 0–0 8.c4 Nbd7 9.a4 Qc7 10.Nbd2 Rfd8 11.Nb3 Rac8 12.Qd2 Ne8 13.Rfc1 f6 14.b5 Rb8 15.Bc3 c5 16.a5 Rdc8 17.Rcb1 Qd8 18.Qb2 Nf8 19.Nbd2 Qd7 20.Nf1 Bh3 21.Bh1 Be6 22.Ne3 f5 23.Nd2 Nf6 24.Rf1 f4= 25.Nd5 Nd5 26.cd5 Bh3 27.Bg2 Ng6 28.e4 Rf8 29.Nf3–/+ Bg2 30.Kg2 Qg4 31.h3= Qh5 32.Rg1?? fg3–+ (33.fg3 Qf3 34.Kh2 Qd3–+) 0–1. Mohring,Norbert – Schuh,Thomas, SEM–ch VT2 Merzig, 1996.

3.g3 Nf6

4.b5 Nbd7 5.Nf3 –/+.

4.b5 Be6 5.Bg2 Nbd7 (5...c6 6.a4 (6.Nh3+= Qb6 7.Nc3 d5 8.Ng5 cb5 9.e3–/+) 6...Be7 7.Nf3 0–0 8.Nc3 a6 9.0–0+=) 6.a4 (6.Bb7!? Rb8 7.Bc6+= Nd5 8.a4 a6 9.d4+=) 6...Bd5 (6...d5 7.Nf3 Bd6 8.0–0+= a6 9.Na3+=) 7.Nf3= Be7 (7...Bf3 8.Bf3 d5 9.0–0=) 8.Nc3 Be6 9.0–0 (9.Ng5=) 9...0–0 10.Re1 (10.d4 e4 11.Ng5 d5 12.Ne6 fe6+=) 10...Nb6 11.d3 a6 (11...a5 12.e3=) 12.Qc1 (12.Qd2 Nbd7=) 12...ab5 13.ab5 Ra1 (13...Qd7 14.Qd2+=) 14.Qa1 Qa8 (14...Qd7 15.Qa7 Nfd5 16.Nd1+=) 15.Qc1 (15.Ng5 d5=) 15...Bd7 16.Qd2 Re8 (16...Qe8 17.Ba3=) 17.Ra1 Qd8 18.Ng5 (18.Bc1 c6=) 18...c6 19.bc6 Bc6 20.Nf3 Qc7 21.e4 Nfd7 22.d4 (22.Qe2!?=) 22...Nc4+= 23.Qc1 Nb2 (23...ed4 24.Nd4 Bf6 25.Nc6 bc6 26.Ra4–/+) 24.Qb2= ed4 25.Nd4 Rc8 (25...Bf6 26.Qb4=) 26.Nc6 (26.Ra7 Bf6 27.Qb4=) 26...Qc6 (better is 26...bc6!? 27.Ra3 d5+=) 27.Nd5+/– Bd8 28.Rc1 Nc5 29.Nb4 Qe8= 30.Re1 Bf6 31.Qa3 Ra8 32.Qe3 ˝–˝. Acevedo,Daiana – Manosalvas,Jennifer, Pan American–ch U12 Girls, 1999.

4.b5 Be7 5.Bg2+= 0–0 6.c4 Nbd7 7.e3 (7.d4 ed4 8.Nf3 Ne5+=) 7...e4 8.Bd4 (8.d3!?–/+) 8...Nc5 (8...Ne5 9.Bf1–+) 9.Bc5–/+ dc5 10.Nc3 Bf5 (10...Qd3 11.Qb1–/+) 11.Nge2? (better is 11.Qc2!?=) 11...Bd6 (11...Qd3!?–+) 12.0–0 Be5 13.Rc1 (13.f3 Be6 14.fe4 Bc4+/–) 13...Qe7 (13...Qd3 14.f3–/+) 14.Nf4 (14.f3 ef3 15.Bf3 Bh3=) 14...Bc3 (14...Rfd8!?–/+) 15.dc3+= Rad8 16.Qb3 Rd7 17.h4 Rfd8 18.Rcd1 Be6 19.a4 Rd1–/+ 20.Rd1 Rd1 21.Qd1 Bc4 22.Bf1 Bf1–+ 23.Kf1 Qd6 24.Qc2 c6–+ 25.c4 cb5 26.ab5 a6 27.ba6 ba6 28.Kg2 Qc6 29.Qd2 h6 30.Qd8–/+ White is in command 30...Kh7 31.Qe7+= Qd7 32.Qc5 Qb7 33.Qd4 a5 34.Nd5 Nd5 35.cd5 The passed pawn on d5 quickly leads to threats 35...Qe7 36.d6 Qd7 37.Qe4+/– g6 38.Qd4 a4+/– 39.Qc5 Qb7 40.Kh3?? Qd7 41.Kh2 Qg4 42.e4 a3? 43.Qa3+– White gets kings attack 43...Qe4 44.Qa7 Kg7 45.d7 Qd3 46.Qa1 Kh7 47.Qa7?? Qd2?? 48.d8Q+– Qd8 49.Qf7 Kh8 50.Qg6 Qd2 51.Qe8 Kg7 52.Qe5 Kh7 53.Qf5 Kg7 54.h5 Kg8 55.Qf4 Qe2 56.Qh6 Qf2 57.Kh3 Qf5 58.Kh4 Qe4 59.Qf4 Qh1 60.Kg5 Qd5 61.Kg4 Qd1 62.Qf3 Qd4 63.Kh3 Qd6 64.Qg4 Kh8 65.h6 Qf6? 66.Qf4+– Qe6 67.g4 Qg6? 68.Kh4 Kh7 69.g5 Kg8 70.Qb8 Kf7 71.Qc7 Kg8 72.Qd8 Kh7 73.Qe7 Kg8 74.Kg4 Kh8 75.Qf8 Kh7 1–0. Curado,P – Curado,H, POR–ch U20 Odivelas, 1995.

4.b5 g6 5.Bg2= Bg7 6.Nc3 (6.Nf3 a6 7.a4 e4=) 6...0–0 7.d4 (7.Nf3 a6+=) 7...ed4 (7...Nbd7 8.Nh3+=) 8.Qd4 a6 9.ba6 Ra6 10.Qb4 (10.Nd5 Nbd7+=) 10...Nc6 (10...Rb6 11.Qa3–/+) 11.Qh4 Bf5 12.e4? (better is 12.Nb5–/+) 12...Ne4!–+ 13.Nge2 (13.Be4 Qh4) 13...Qh4 14.gh4 Nc3 (14...Re8!? 15.Ne4 Bb2 16.Rb1 Ra2 17.Rb2 Rb2 18.Nf6 Kf8 19.Ne8 Ke8 20.c3–+) 15.Bc3 Bc3 (15...Bc2 16.Kd2 Bf5 17.Bg7 Kg7 18.Bc6 Rc6 19.Nd4–+) 16.Nc3 Bc2 17.Kd2 Bf5 18.Bf3 (18.h5 g5–+) 18...Rb6 19.Rac1?! (19.Bc6 Rc6 20.h5–+) 19...Rb2 20.Ke1 (20.Ke3 Re8 21.Kf4 Rf2–+) 20...Re8 21.Kf1 Ne5 (21...Nd4 22.Kg2 Re3–+) 22.Be2 (22.Kg2–+) 22...Bh3 23.Kg1 If White now only could play f3... 23...Re2 (23...Re2 24.Ne2 Nf3#) 0–1. Langguth,Wilhelm – Guzek,Hartwig, ICCF, 1995.

4.e3 c6 5.c4 Nbd7 6.d3 Qe7 7.Nd2 d5 8.b5 cb5 9.cb5 a6 10.ba6 Ra6 11.d4 Ra8 12.Rc1 e4 13.Ne2 Nb6 14.Nc3 Bd7 15.Qb3 Qb4 16.Nb5 Ra5 17.Bc3 Qb3 18.Nc7 (18.ab3? Rb5 19.Bb5 Bb5–+) 18...Kd8 19.ab3 Ra3 20.Nb5 Ra8 21.Nb1 Rc8 22.Bd2 Ra8 23.Be2 h5 24.0–0 Be7 25.N1c3 Bb4 (25...Bh3 26.Rfe1–/+) 26.Ra1 (26.Ne4 de4 27.Bb4 Nbd5+/–) 26...Ke7 (26...Bg4 27.Ra8 Na8 28.Ra1=) 27.Rfc1 (27.Ne4 Bd2 28.Nd2 Rhc8+/–) 27...Rhc8 (27...Ra1 28.Ra1 Bg4 29.Bf1=) 28.Be1 (28.Na7 Rc7 29.Nd5 Nbd5 30.Bb4 Ke6 31.Rc7 Nc7 32.Bc4 Ncd5+=) 28...g6 (28...Ra1 29.Ra1 Bb5 30.Nb5 Be1 31.Re1+=) 29.Ne4?? (better is 29.Na7 Rd8 30.Ne4 Be1 31.Nf6 Bf2 32.Kf2 Kf6 33.Bf3=) 29...Be1–/+ 30.Nf6 Bf2 31.Kf2 Kf6 32.Ra8 Ra8 33.Nc7 Rc8 34.Ke1 Na8?? 35.Nd5+– Ke6 36.Rc8 Bc8 37.Nc3 Nb6 38.Kd2 Kf6 39.Bd3 Be6 40.Kc2 Kg5 41.Be2 Nd5 42.Nd5 Bd5 43.b4 Kf5 44.Kc3 Ke4 45.Bc4 Be6 46.Be6 fe6 47.Kc4?? Ke3= 48.Kc5 Ke4 49.b5 g5 50.b6 g4 51.Kd6 Kd4 52.Kc7 e5 53.Kb7 e4 54.Ka7 e3 55.b7 e2 56.b8Q e1Q 57.Qh8 Qe5 58.Qd8 Ke4 59.Kb7 Qd5 60.Qd5 Kd5 61.Kc7 Ke4 62.Kd6 Kf3 63.Ke5 Kg2 64.Kf4 Kh2 65.Kg5 Kg3 66.Kh5 Kf3 67.Kh4 Kf4 68.Kh5 g3 (68...g3 69.Kh6 g2 70.Kg7 Ke5 71.Kg6 g1Q 72.Kf7 Qf2 73.Kg6 Qf6 74.Kh7 Qf7 75.Kh8 Qd7 76.Kg8 Kf6 77.Kf8 Qf7#) 0–1. Rempe,Torge – Dargahpour Barough,Arash, Schleswig Holstein–chB U16, 2001.

4.e4 Ne4 5.Qe2 Nf6 6.f4–/+ Nbd7 7.Bg2 Be7 8.fe5 Ne5 –/+.

4.e4 Be6 5.Bg2 (5.Nc3 d5 (5...Nc6 6.a3 Be7 7.Nf3 0–0 8.d4 Bg4+=) 6.ed5 Nd5 7.a3 Nc3 8.Bc3 Bd5+=) 5...Be7 (5...Nc6 6.b5 Na5 7.Bc3 c6 8.d4 Nc4+=; 5...c6 6.d4 ed4 7.Qd4 a5 8.Nf3 ab4+=) 6.Nf3 (6.Ne2 Nc6 7.a3 a5 8.b5 Na7+=) 6...a6 (6...0–0 7.0–0 a5 8.b5 Bc4+=) 7.Ng5 (7.0–0 0–0 8.d4 Ne4+=) 7...h6 (7...Bg4 8.f3 Bh5 9.d4+=) 8.Ne6= fe6 9.d3 0–0 10.0–0 Nc6 11.a3 d5 (11...Qe8 12.Nd2=) 12.f3 (12.ed5 ed5 13.Re1 Bd6+=) 12...d4 13.f4 ef4 14.gf4 Qe8 15.e5 Nd5 16.Bc1 (16.Bd5 ed5 17.Qg4 h5=) 16...Qg6 17.Kh1 (17.Qe1 Rad8+=) 17...Rad8 18.Bd2 Na7 (18...Qf5 19.Be4 Qf7 20.c4 dc3 21.Nc3=) 19.c4 dc3 20.Nc3 (20.Be4 Qf7 21.Nc3 Nc3 22.Bc3 Nb5+=) 20...Nc3 (20...Qd3 21.Nd5 ed5 22.Be1+=) 21.Bc3= b6 (better is 21...Qd3!? 22.Qb3 Nb5 23.Qe6 Rf7=) 22.Be4+/– Qe8 (22...Qf7 23.Qa4 Nb5 24.Bb2+/–) 23.Qb3 (better is 23.Qg4+–) 23...Nc6?? (better is 23...Qf7+/–) 24.Qe6+– Kh8 25.Bc6 (25.Bc6 Qf7 26.Qf7 Rf7 27.e6+–) 1–0. Cumin,Alessandro – Vest,Max, The Climb MUL/00, 2001.

4.Bg2 Be6 5.e3?? e4 6.Ne2 d5 7.a3 Bd6 8.0–0 h6 9.d3 Nbd7 10.Nd2 ed3 11.cd3 Be5 12.Be5 Ne5 13.Nb3 b6 14.Nbd4 Bd7 15.Rc1 Rc8 16.b5 0–0 17.Nf4 Be6?? 18.Nfe6+– fe6 19.Ne6 Qd6 20.Nf8 Kf8 21.h3 Qa3 22.Ra1 Qd3 23.Qd3 Nd3 24.Ra7 c6 25.bc6 Rc6 26.Rd1 Rc3 27.Rb7 Ne4 28.Be4 de4 29.Rb6 Rc2 30.Rf1 (30.Rf1 Ne5 31.Rb7+–) 1–0. Harnas (1795) – ashoka_theking (1640), internet, 2007.

4.Bg2 Bf5 5.Bb7 Nbd7 6.Ba8 Qa8 7.Nf3 e4 8.Nh4 Bh3 9.Rg1 Ne5 10.d3 e3 11.f3 Be7 12.c4 0–0 13.Nc3 Rb8 14.b5 a6 15.a4 g5 16.Ng2 g4 17.Ne4 Ne4 18.fe4 Qb7 19.Ne3 ab5 20.ab5 d5 21.Be5 Qb6 22.Bf4 Bb4 23.Kf2 Re8 24.Ra6 Qb7 25.Qa4 Bc5 26.Ra1 de4 27.Ra8 Ra8 28.Qa8 Qa8 29.Ra8 Kg7 30.Be5 Kg6 31.Ra6 Kg5 32.d4 Bd6 33.Bd6 cd6 34.b6 (34.b6 h5 35.b7 f6 36.b8Q h4 37.Qg8 Kh6 38.Ra7 hg3 39.hg3 Bg2 40.Rh7#) 1–0. algernon (1700) – gbsr (1800), net–chess.com, 2001.

4.c4

4.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.g3).

4.c4 Be7 5.Bg2 (--> 1.b4 e5 2.Bb2 d6 3.g3 Nf6 4.Bg2 Be7 5.c4).

4.e3 Bg4

5.Be2 Qd7 6.Nc3 Na6 7.b5 Nc5 8.f3 Be6 9.a4 a5 10.d4 ed4 11.ed4 Na6 12.ba6 ba6 13.g4 Rb8 14.Rb1 d5 15.Ba6 Rb6 16.Bb5 c6 17.Bd3 Bb4 18.Nge2 0–0 19.0–0 Bc3 20.Bc3 Rb1 21.Qb1 Qd6 22.Ba5 Bg4 23.Bb4 Qc7 24.Bf8 Kf8 25.Ng3 Bh3 26.Re1 g6 27.Qb4 Kg7 28.a5 Qa7 29.c3 Qc7 30.Re7 Qf4 31.Be2 Ne4 32.c4 Qe3 33.Kh1 Qc1 34.Nf1 Bf1 35.Kg1 Be2 36.Kg2 0–1. willi_weizenkeim – diegmr, playchess.de, 2002.

5.Be2 Be2 6.Qe2 Be7 7.Nf3 Qd7 8.0–0 Qa4 9.c3 Qc2 10.Ba3 Qa4 11.d4 e4 12.Nfd2 d5 13.f3 ef3 14.Qf3 Qc2 15.Rf2 Ne4 16.Qf7 Kd7 17.Qd5 Nd6 18.Nc4 Qd1 19.Kg2 Rf8 20.Nd6 Rf2 21.Kf2 c6 22.Qf5 Kd6 23.b5 Kc7 24.Be7 Qc1 25.Ba3 Qh1 26.Qf7 1–0. willi_weizenkeim – schnitzly, playchess.de, 2002.

5.Be2 Be2 6.Ne2 g6 7.0–0 Bg7 8.c4 0–0 9.a4 Nbd7 10.a5 a6 11.d3 b6 12.Nd2 Re8 13.Ne4 Ne4 14.de4 Nf6 15.Nc3 Qe7 16.Nd5 Nd5 17.cd5 Rec8 18.f4 ef4 19.Bg7 Kg7 20.Qd4 Kg8 21.Rf4 Qe5 22.Qd1 f5 23.Qd4 Qd4 24.ed4 fe4 25.Re4 ba5 26.ba5 Rab8 27.Rae1 Kg7 28.Re7 Kh6 29.Rd7 Rb5 30.Ree7 Rd5 31.g4 Rd4 32.Rh7 Kg5 33.h3 Rc4 34.Rdf7 Rc5 35.Kg2 Ra5 36.Rf3 Ra1 37.Kg3 Rg1 38.Kh2 Rg4 39.hg4 Kg4 40.Kg2 c5 41.Rf6 Kg5 42.Rd6 1–0. willi_weizenkeim – sonnyspock, playchess.de, 2002.

5.Be2 Be6 6.Bf3 (6.Nf3 Be7+=) 6...Qc8 (6...e4 7.Be2–/+) 7.Bg2 Be7 8.Ne2 0–0 (8...Bd5 9.Bd5 Nd5 10.a3+=) 9.0–0 Bh3 10.f4 Bg2 11.Kg2 ef4 (11...e4!?+=) 12.Nf4= Nc6 13.Nh5 (better is 13.a3!?=) 13...Nh5–/+ 14.Qh5 (14.b5 Ng3 15.hg3–/+) 14...Qe6 (14...Nb4!? 15.Nc3 Qe6–/+) 15.Rf4+= Ne5 (15...g5 16.Rg4+=) 16.d3 (16.Nc3 d5=) 16...Bf6 (16...a5 17.Nc3+=) 17.Nd2= g6 (17...Ng4 18.Qg4 Bb2 19.Qe6 fe6 20.Rb1=) 18.Qe2 Bg7 (18...Bg5 19.Be5 Qe5 20.d4 Qd5 21.Rf3=) 19.Ne4 (19.d4!? g5 20.Rff1=) 19...f5–/+ Black gets deadly initiative 20.Ng5 (20.Nc3 Bh6–/+) 20...Qe7 21.h4 (21.Nh3 Ng4 22.Bg7 Ne3 (22...Qg7?! 23.Re1=; 22...Kg7?! 23.Re1=) 23.Kh1 Qg7–/+) 21...h6–+ 22.Nh3 Ng4 23.Bg7 Ne3 24.Kf3 (24.Kg1!? Qg7 25.Re1 Rae8–+) 24...Qg7 25.Re1 Rae8 26.c4? (better is 26.Qd2 Nd5 27.Rc4–+) 26...g5 27.hg5 hg5 (27...hg5 28.Ng5 Qg5 29.Qe3 Qh5 30.Kg2 Re3 31.Re3 Qd1–+) 0–1. Solano,Agustin (2015) – Minero,Boris P (2100), CRA–ch Costa Rica, 1997.

4.Bg2 a6

5.d4 Nc6 6.Bc6= bc6 7.de5 de5 8.Qd8 Kd8 9.Be5 Bb4 10.c3 Ba5 11.Nd2 Be6 12.Nb3 Bb6 13.Bf6 gf6 14.Nf3 Ke7 15.Nfd4+= Bb3 16.ab3 Bd4+= 17.cd4 Rhd8 18.e3 c5 19.dc5 Rd5 20.Ke2 Rc5 21.Rhc1 Kd6 22.Rd1 Kc6 23.Rd3 Rh5 24.h4 Rb5 25.Ra4 Rab8 26.Ra6+– Kb7 27.Rf6 Kc8 28.Rf7 Rb3 29.Rf8 Kb7 30.Rb3 (30…Kc6 31.Rfb8+–) 1–0. Trkn – guest4181, ICC, 2004.

5.d4 ed4 6.Qd4 Nc6 7.Qf4 =+.

5.e3 Be7 (--> 4.Bg2 Be7 5.e3 a6).

4.Bg2 c6

5.a3 Be6 6.Nf3 h6 7.d3 Be7 8.0–0 0–0 9.c4 Nbd7 10.Qc2 Qc7 11.Nbd2 Nh7 12.Rfc1 f5 13.d4 Rae8 14.d5 cd5 15.cd5+/– Qc2 16.Rc2 Bd5 17.Ne5+/– Ndf6 18.Ng6 Rf7 19.Rac1 Bf8 20.e3 Ne4 21.Ne4 fe4 22.Rc7 Bc6+= 23.Rf7 Kf7 24.Nf4 Ng5 25.Ne2 Ne6 26.Bh3 a6= 27.Kg2 g6 28.Rc2 Be7 29.Be6 Ke6 30.Nd4 Kd7 31.Nc6 bc6 32.Bg7 h5 33.h3 Rg8=+ 34.Bd4 Rf8 35.Bg7 Rf7 36.Bb2 Rf5 37.Rc4 d5 38.Rc2 Rf8 39.Bd4 Ra8 40.Bb6 Rb8 41.Bc5 Bf6 42.f4 ˝–˝. Wehmeier,Sven (1740) – Binger,Friedhelm (1785), Muensterland Verbandsklasse–A, 2002.

5.a3 g6 6.d4 Nbd7 7.de5 de5 8.Nf3 Qc7 9.Nbd2 Bg7 10.Nc4+/– Nd5 11.e4 N5b6 12.Qd6 Qd6 13.Nd6 Ke7 14.0–0–0 Na4 15.Ba1 b6? 16.Bh3+– h6?? 17.Nc8 (17.Nc8 Rhc8 18.Rd7 Kf8 19.Ne5 Be5 20.Be5+–) 1–0. guest3315 – chessmen32 (1760), ICC, 2006.

5.c4 a6 6.a3 Be6 7.Qc2 g6 8.Nf3= Bh6 9.0–0 0–0 10.e4 b5 11.d3 Nbd7 12.c5 dc5 13.bc5 Qc7= 14.Nbd2 a5 15.d4 ed4 16.Nd4 Bd2 17.Ne6 fe6=+ 18.Qd2 Nc5 19.Qc2 Ncd7 20.Qb3 Rae8 21.Rac1 a4 22.Qb5+= Rb8 23.Qe2 e5 24.Rc2 Kg7 25.Rd1 Rf7 26.Bh3 Re8 27.Qc4 Rb8 28.Qa4+– Rb5?? 29.Qb5! (29.Qb5 cb5 30.Rc7+–) 1–0. ranaground – master156, ChessWorld.net, 2009.

5.c4 Be6 6.Qc2 Nbd7 7.d3 d5+= 8.a3 d4 9.Nd2 Qc7 10.Nb3 b6 (better is 10...Be7!?+=) 11.b5 Rc8 12.Bc6 Bd6 13.Nf3 h6 14.0–0 0–0 15.Nfd2 Nh5 16.Bf3 Ndf6 17.Ne4 Ne4 18.Be4 Qe7 19.e3 de3 20.fe3 Qg5 21.Qe2 Bh3 22.Bg2 Bg2 23.Kg2 e4 24.Rg1 (better is 24.de4 Ng3 25.hg3 Qg3 26.Kh1 Qh3 27.Kg1 Rc4 28.Rf3 Bh2 29.Kf2 Qh4 30.Kg2+=) 24...ed3+= 25.Qd3 Rcd8 26.Bd4 Rfe8 Attacking the isolated pawn on e3 27.Kf2 (27.Kh1 Nf6+=) 27...Bc7 28.Ra2 Nf6 29.Rg2?? (29.Rb1 Ng4 30.Kg1 Ne3–+) 29...Re5 (better is 29...Ng4 30.Ke1 Rd4 (30...Ne3?! 31.Rge2–/+) 31.Qd4 Re3 32.Rge2 Rb3–+) 30.Kg1+= Ng4 The pressure on the isolated pawn grows 31.h4?? (31.e4 Nf6 32.Rge2 Qg4–/+) 31...Qe7 (better is 31...Re3 32.hg5 Rd3–+) 32.Qb1 (32.e4!?–/+) 32...Re6–+ 33.Qe1 Be5 34.Rge2? (better is 34.Rad2!?–/+) 34...Rg6–+ 35.Rad2? (35.h5 Rg5 36.Rad2–+) 35...Bg3 36.Qg3 Nf6 37.Rg2 Rg3 38.Rg3 Nh5 39.Rh3 Qe4 40.Rg2 Qb1 41.Kh2 Qb3 42.c5 bc5 43.Bc5 Rd1 44.Rf3 Qb1 45.Kh3 Rh1 46.Rh2 Rh2 47.Kh2–+ Qc2 (47...Qc2 48.Kg1 Qc5–+) 0–1. Macedo,A Soares De (1850) – Da Silva,D Benicio (1690), Zonal CBX – RN, 2014.

5.c4 Be6 6.d3 Be7 7.Nf3 0–0 8.0–0 Nbd7 9.Nbd2 Ne8 10.e4 Rc8 11.a4 f5 12.Re1 f4 13.d4 fg3 14.hg3 Bg4 15.Qc2 ed4 16.Nd4 Bf6 17.c5 dc5 18.bc5 Bd4 19.Bd4 Ndf6 20.Qc4 Kh8 21.f4 Be6 22.Qc3 Kg8 23.f5 Bf7 24.Rad1 Qc7 25.Nc4 Bc4 26.Qc4 Kh8 27.Qe6 Rd8 28.Be5 Rd1 29.Rd1 Qa5 30.Qc4. THEGREENMILE – ericlep2, playchess.de, 2001.

5.c4 Bf5 6.a3 Nbd7 7.d3 Qb6 8.Nc3 a5 9.b5 Nc5 10.a4 e4 (10...Be7!) 11.d4 Ncd7 12.e3 Be7 13.Nge2 c5 14.0–0 cd.

5.d3 Nbd7 6.a4 Be7 7.c4 b6 8.Bc6+/– Rb8 9.Nc3 Qc7 10.Bg2 Bb7 11.Nf3 d5 12.Nd5 Nd5 13.cd5 Bb4 14.Nd2 Nf6 15.e4 0–0 16.0–0 Nd7 17.Rc1 Qd6 18.Nc4 Qf6 19.Qb3 a5 20.Kh1 Nc5 21.Qd1 Rfe8 22.f4 ef4 23.Bf6 (23…gf6 24.Qg4 Kf8 25.Qf4 Nd3 26.Qf6+–) 1–0. ForkU – Pulsar, Live Game Caissa's Web, 2004.

5.d3 Be7 (--> 4.Bg2 Be7 5.d3 c6).

5.d3 g6 6.Nf3 Bg7 7.Nbd2 0–0 8.0–0 Bg4 9.c4 Nbd7 10.a3 Qb6 11.h3 Bf3 12.Bf3 Rae8 13.Qb3 c5 14.Bc3 a6 (14...Qc7 15.Qa4+=) 15.Rab1 (15.bc5 Qb3 16.Nb3 dc5 17.Bb7 Re6+–) 15...Bh6 (better is 15...Rb8!?+/–) 16.bc5+– Qb3 17.Nb3 (17.Rb3?! Nc5 18.Rb4 Bd2 19.Bd2 e4 20.de4 Rc8+/–) 17...dc5 18.Bb7 e4? (better is 18...Re6+–) 19.Bf6 Nf6 20.Nc5 a5 (20...ed3 21.ed3 a5 22.Bf3+–) 21.Ne4 Bg7 22.c5 Rb8 (22...Ne4 23.Be4 Rd8 24.c6+–) 23.Nf6 Bf6 24.e3 Rfd8 25.d4 Be7 26.Rb5 Rd7 27.c6 Rc7 28.Ra5 Rbb7 29.cb7 Rb7 30.a4 Kg7 31.Ra8 1–0. marekt (2040) – mekkelmania, gameknot.com, 2014.

5.d3 h6 6.Nf3 Bg4 7.Na3 b5 8.0–0 a6 9.c4 Qc7 10.Rc1 Qd7 11.Nc2 Be7 12.Ne3 Bf3 13.Bf3 0–0 14.Qc2 a5 (14...Qe6!?+=) 15.cb5+/– d5? Black plans e4 (better is 15...ab4 16.bc6 Qc7+–) 16.bc6+– Qc7 (16...Qd6 17.c7 Nbd7 18.Qc6 Qc6 19.Rc6 ab4 20.Nf5+–) 17.b5 (17.Nd5?! Nd5 18.Bd5 ab4+–; 17.Bd5?! ab4 18.d4 Ra5+–) 17...e4 (17...a4+–) 18.Bf6 Bf6 19.Nd5 Qd6 20.Be4 Rc8 (20...Bg5 21.f4 Bd8 22.Qc5 Qc5 23.Rc5+–) 21.Nb6 Nd7 22.Nd7 1–0. usingprogram (2000) – patdb, internet, 2013.

5.e3 Be7 (--> 4.Bg2 Be7 5.e3 c6).

5.e3 Bf5 6.Ne2 Nbd7 7.0–0 Be7 8.d4 ed4 9.Nd4= Bg6 10.Nd2 d5= 11.c4 dc4 12.Nc4= Bb4 13.Qb3 Be7 14.Rab1?? Rb8 15.Ba3? 0–0 16.Be7 Qe7 17.Qa4? Bb1–+ 18.Rb1 a6 19.Bc6? bc6 20.Rb8 Rb8 21.Nc6 Rb1 22.Kg2 Qe4 23.f3 Qd3 24.Qa6 Qf1# 0–1. GMMike – regie11, Caissa.com, 2004.

5.Nf3 Na6 6.a3 e4 +=.

5.Nf3 b6 6.0–0 Bb7 7.c4 Nbd7 8.d3 Be7 9.Nbd2 d5 10.cd5 cd5 11.Ne5 Bd6 12.Nd7+– Qd7 13.e4 0–0?? 14.Bf6 gf6+/– 15.ed5 Be5 16.Rc1 Ba6 17.d6 Qd6 18.Ba8 Ra8 19.Ne4 Qb4 20.Qf3 Qa3? 21.Nf6 Bf6 22.Qa8 Kg7 23.Qa7 Qd3 24.Qb6 Bd4 25.Qb3 Qe4 26.Rfe1 Qf5 27.Rc2 Bd3 28.Rd2 Qf3 29.Qd3 Bf2 30.Rf2 Qd3 31.Ref1 Qd5? 32.Rf7 Kg6 33.R1f6 Kg5 34.Rf5 Qf5 35.Rf5 Kf5 36.a4 Ke6 37.Kf2 Kd6 38.Ke3 Kc5 39.Kf4 Kb4 40.Kg5 Ka4 41.Kh6 Kb4 42.g4 Kc5 43.Kh7 Kd5 44.g5 Ke6 45.h4 Kf7 46.h5 Kf8 47.g6 Ke7 48.g7 (48.g7 Kd6 49.h6+–) 1–0. Santeb – Odin, internet, 2008.

5.Nf3 Be7 (--> 4.Bg2 Be7 5.Nf3 c6).

5.Nf3 Bg4 6.d3 Bf3 7.ef3 Be7 8.0–0 0–0 9.Nd2 Nbd7 10.a3 b5 (10...a5!?+=) 11.f4= ef4 12.Bc6 Rc8 (12...Rb8!?+=) 13.Bb5+/– Nb6 (13...fg3 14.hg3 Ne5 15.Re1+/–) 14.c4+– d5 15.c5 Na8 16.Ba4 g5 (better is 16...Nc7+–) 17.Nf3 g4 (17...fg3 18.fg3 Nd7 19.Nd4+–) 18.Nd4 f3 (18...h5+–) 19.Nf5 Nc7 20.Qd2 Ne6 Black intends d4 21.Rae1 d4 22.Re6! fe6 (22...fe6 23.Qg5 Mate attack) 23.Qg5 1–0. marekt (2015) – saliamichenko, gameknot.com, 2014.

5.Nf3 g6 6.0–0 Bg7 7.c4 0–0 8.d3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5 7.d3 c6 8.c4).

5.Nf3 g6 6.a3 Bg7 7.d3 0–0 8.e4 a5 9.Nc3 Qb6 10.Na4 Qc7 11.0–0 b5 12.Nc3 ab4 13.ab4 Ra1 14.Qa1 Na6 15.Qa5 Qa5 16.ba5 Nd7 17.Ra1 Bb7 18.Bh3 f5? 19.ef5+/– gf5 20.Ng5?? Rf6 21.Bg2 Nb4 22.Nb5 Nc2 23.Rc1 Nb4 24.Nc7 Nd3 25.Rc2 Nb2?? 26.Rb2+/– Nc5 27.Rb7! Nb7 28.a6 Nc5 29.a7 Rf8 30.Bc6 Bf6 31.Bd5 (31.Bd5 Kh8 32.Nf7 Kg7 33.Nd6+–) 1–0. mic (2170) – jcosta (2475), net–chess.com, 2007.

5.d3 Be6

6.a3 Be7 7.c4 a6 8.Nf3= 0–0 9.0–0 Nbd7 10.Nbd2 Rb8 11.Ng5 Bg4 12.h3 Bh5 13.g4 Bg6 14.h4? Ng4–+ 15.Ngf3 Bh4 16.Ne4 Be7 17.Ng3 h5 18.Nh2 Ndf6 19.f3? Ne3 20.Qb3 Nf1 21.Nhf1 c5 22.bc5 d5 23.Be5 Bc5 24.d4 dc4 25.Qc4 Bd6 26.Ne3 Rc8 27.Qb3 h4 28.Ngf5 Be5 29.de5 Nd7 30.Kf2 Ne5 31.Rd1 Qf6 32.Rd6?? Qg5–+ 33.Qb1 Bf5 34.Qf5 Qg3 35.Kf1 Nf3 36.Bf3 Qd6 37.Ng4 Rc1 38.Kf2 Qg3 39.Ke3 Re8 40.Kd2 Qe1 (40...Qe1 41.Kd3 Qc3#) 0–1. mic (2100) – chips (2240), net–chess.com, 2008.

6.c4 Be7 7.Nf3 Nbd7 8.0–0 0–0 9.Ng5 Bf5 10.e4 (10.Nc3 h6 11.Nge4 Ne4 12.Ne4 a5=) 10...Bg6 (10...Bg4 11.Bf3 Bf3 12.Nf3 Qb6+=) 11.Nh3 (11.Nc3 a5 12.b5 Nc5=) 11...a6 (11...Qb6–/+) 12.f4? (better is 12.Nc3!?+=) 12...h6 (12...Qb6 13.Kh1 Qb4 14.Bc3–+) 13.f5 Bh7 (13...Bh5 14.Qd2 a5 15.ba5 Qa5 16.Qa5 Ra5 17.Nf2+=) 14.Qd2 (14.Nf2 a5 15.b5 cb5 16.cb5 a4=) 14...b5 (14...Qb6 15.d4–/+) 15.a4 (15.Na3 Nb6+=) 15...Qc7 (15...bc4 16.dc4 Qb6 17.Kh1–/+) 16.Rc1 (16.ab5 ab5 17.Ra8 Ra8 18.cb5 Qb6 19.d4 Qb5+=) 16...Rfb8 (16...bc4 17.Rc4 d5 18.Rc2–/+) 17.Nf2 (17.ab5 ab5 18.Ra8 Ra8 19.cb5 Qb6 20.Nf2 Qb5=) 17...Ne8 (17...bc4 18.dc4 Qa7 19.b5–/+) 18.h4 Rb7?? (better is 18...bc4 19.Rc4 Nef6–/+) 19.ab5+– cb5 20.cb5 Qb6 21.Nc3 Nef6 22.ba6 Ra6 23.Ra6 Qa6 24.Ra1 Qb6 25.b5 Nc5 26.Qc2 Bf8 27.Kh2 Ne8 28.Ba3 Nc7 29.Rb1 Be7 30.Ng4 Nd7?? 31.Bc1 Qa7 32.Be3 Qb8 33.Qb3 Nb6 34.Bb6 Rb6 35.Ne3 Bd8? 36.Nc4 Rb7 37.Nd6 Rb6 38.Qf7 Kh8 39.Qf8 Bg8 40.Nf7 (40.Nf7 Kh7 41.Nd8+–) 1–0. Sakada,MV Con (1860) – Da Silva Moreira,Iloyziel Joa (1795), Sao Jose dos Pinhais BRA, Parana Ch, 2014.

6.Nd2 Nbd7 7.Ngf3 Qc7 8.0–0 Be7 9.c4 0–0 10.a3 d5 11.cd5 cd5 12.Rc1 Qd6 13.Nb3 b6 14.Nfd2 Rac8 15.Nf3 Qb8 16.Ng5= Rc1 17.Qc1 Rc8 18.Qb1 h6 19.Ne6= fe6 20.Nd2 Bd6 21.Bh3 Nf8 22.Nf3 Kf7 23.Rc1+= Rc1 24.Qc1 N8d7 25.Qc2 g5 26.Bg2+= e4 27.de4+/– de4 28.Nd4 Qc7 29.Qb3 Nd5 30.Be4 N7f6 31.Bd5 ed5 32.Nf5 Be5 33.Nh6?? Kg6–/+ 34.Be5 Qe5 35.g4 Kh6–+ 36.e3 (36.e3 Ng4 37.f4 gf4 38.Kf1–+). coloplayah (2180) – licmata, net–chess.com, 2006.

6.Nd2 Nbd7 7.Ngf3 h6 8.a3 Be7 9.Nb3 Bb3 (9...Qc7!?+=) 10.cb3= 0–0 11.Nd2 (11.0–0 a5+=) 11...d5= 12.Qc2 Re8 13.0–0 Rc8 14.d4 (14.Nf3 e4 15.Nh4 ed3 16.ed3 c5=) 14...e4 (14...ed4 15.Nf3=) 15.Rfe1 Bd6 16.Nf1 Bb8 (16...h5 17.Qd2=) 17.Ne3 g6 18.Qd2 Kg7 19.Bh3 Rh8 (19...h5 20.Rac1=) 20.f3 h5 21.Ng2 Qc7 22.f4 (22.Nh4 Rhe8+=) 22...a6 (22...Qd6 23.Qc3=) 23.Nh4 Rce8 24.e3 Rh7 (24...Qb6 25.Bf1=) 25.Rac1 Reh8 (25...Qb6 26.Bf1=) 26.Rc2 (26.a4 Qb6=) 26...Qd8 27.Qe2 (27.a4 Bd6=) 27...Bd6 28.Rec1 Be7 29.Bc3 ˝–˝. Winkler,Finn Lukas (1605) – Wiecki,Josef (1820), Hamburg GER, St Pauli Open–B, 2014.

6.Nf3 +=.

4.Bg2 Nc6

5.a3 d5 6.d3 Bd6 7.Nf3 0–0 8.0–0 Re8 9.Nbd2 Bf5 10.c4 e4 11.de4 de4 12.Nh4 Bg4 13.h3 Be6 14.Bf6 Qf6 15.Ne4 Qb2 16.Nd6 cd6 17.b5 Na5 18.Qd6 Nc4 19.Qb4 Rad8 20.Qb2 Nb2 21.e3 Rd7 22.Nf3 Bd5 23.Rfc1 1–0. marekt – datan, internet, 2014.

5.a3 Bd7 6.Nf3 b6 7.0–0 Be7 8.c4 0–0 9.d4 ed4 10.Nd4 Nd4 11.Qd4 Rb8 12.Bf3 c5 13.Qf4 Qc7 14.Nc3 Bc6 15.Rad1 Rbd8 16.Nb5 Bb5 17.cb5 Qb8 18.a4 cb4 19.Qb4 Rd7 20.Bc6 Rc7 21.Qf4 Qc8 22.Bf6 Bf6 23.Rd6 Rd8 24.Rfd1 Rd6 25.Qd6 h6 26.e3 Re7 27.Kg2 Qe6 28.Qd3 Qa2 29.Qf5 Qe6?? 30.Rd8 Re8 31.Re8 (31.Re8 Qe8 32.Be8+–) 1–0. mtr – staszev, internet, 2009.

5.a3 Be6 6.Nf3 (6.b5 Na5 7.Bc3 c6 8.Ba5 Qa5 9.bc6 b6=) 6...Be7 7.d3 Ng4 (7...0–0 8.c4+=) 8.d4 (8.b5 Na5=) 8...Bd5 (8...e4!? 9.b5 Na5+= (9...ef3?! 10.ef3 Nce5 11.fg4 Bg4 12.f3=)) 9.de5 (9.Nc3 Bf3 10.Bf3 f5+=) 9...Bf3 (better is 9...de5!? 10.Nc3 Be6=) 10.ef3 Nge5 11.f4 (11.b5 Na5 12.f4 Nec4 13.Bg7 Rg8+/–) 11...Ng6 (11...Nc4 12.Bg7 Rg8 13.Bc3+–) 12.b5 Bf6 13.Qe2 Kf8 14.bc6 Bb2 15.Ra2 Qf6 16.0–0 (16.cb7 Rb8+/–) 16...Re8 (better is 16...bc6 17.Bc6 Rb8=) 17.cb7+/– Qd8? (17...Ne7 18.Qb5 c6 19.Qb2+–) 18.Qb5 (18.Rb2 Re2 19.b8Q Qb8 20.Rb8 Ke7+–) 18...Bd4 19.Bc6 Bf2? (19...a6 20.Qa4 Ba7 21.Be8 Qe8 22.Qa6 Qb8+–) 20.Kf2 (20.Kf2 a6 21.Qb3+– (21.Be8?! ab5 22.Bb5 Qb8=; worse is 21.Qa6 Qb8+–)) 1–0. Moore,R – Uptain,S, Colorado USA, 1994.

5.a3 Be7 A) 6.d3 Nd4 7.e3 (7.c3 Ne6 8.Nf3 0–0 9.0–0 a5 10.c4=; 7.c4 Ne6 8.Nf3 0–0 9.0–0 c6 10.Nc3=) 7...Ne6 8.Nf3 0–0 9.0–0 c6 10.c4=; B) 6.Nf3 e4 7.Ng5 Bf5 8.f3 e3 9.de3 a5 10.b5=.

5.a3 Bf5 6.b5 Ne7 =.

5.a3 Bf5 6.d3 Qd7 7.Nd2 0–0–0 8.c4 Re8 9.e4 (9.Qa4 Kb8+=) 9...Bg4 10.Ndf3 (10.Qa4 Kb8=) 10...Nd4 (10...Be7 11.h3 Bh5 12.Qa4=) 11.h3 Be6 (better is 11...Nf3!? 12.Nf3 Bh5=) 12.Nd4+/– ed4 13.Bd4 c5 14.Be3 b6 15.Ne2 g6 16.Qb3 Kd8 17.Nf4 Bg7 18.Rd1 Ke7 (18...Qc7 19.Ne6 Re6 20.0–0+–) 19.0–0 (19.bc5 bc5 20.e5 Ng8+–) 19...g5 (19...Rc8 20.Rfe1+–) 20.Ne6 Qe6 21.bc5 (21.Bg5 h6 22.Bf4 Nd7+–) 21...dc5 22.Bg5 h6 23.Bh4 Kf8 24.f4 Ng4 (24...Rg8+–) 25.hg4 Bd4 26.Kh2 Qg4 27.Rf3 (27.Qa4!? Rg8+–) 27...Rg8 28.Qa4 Re6 (28...a5 29.Rb1 Rg6 30.e5+–) 29.Rdf1 (29.f5 Re8 30.Qa7 Be5+–) 29...Qh5 (29...a5 30.Qd7 Re8 31.Qc7+–) 30.Qa7 Reg6 (30...Bf6 31.Qa8 Re8 32.Qd5 Qd5 33.cd5 Bh4 34.gh4+–) 31.Qe7 White prepares the advance e5 (31.Bh3 Bg1 32.Kh1 Kg7+–) 31...Kg7 32.e5 (32.f5 Rg5 33.Rf4 Bf6+–) 32...Kh7 (32...Re6 33.Qb7 Kh8 34.Bh3+–) 33.Bh3 (better is 33.Qf7 R8g7 34.Qd5 Rg4+–) 33...Rg3 (33...R6g7+–) 34.Bg3 Rg3 (34...Bb2 35.Qf6 Rg7+–) 35.Rg3 Qe2 36.Rg2 Qh5 37.e6 Bg1 38.Kg1 1–0. Vallejos,Jose Antonio (1935) – De Souza,Luciano Gomes, Bairro BRA, Open, 2014.

5.a3 Bf5 6.d3 Qd7 7.Nf3 Be7 8.Nbd2 h6 9.Nc4 Bh3 10.0–0 Bg2 11.Kg2 e4 (11...0–0–0!?=) 12.de4+= Ne4 13.b5 (13.Bg7 Rg8 14.Bh6 Qe6+/–) 13...Ne5 (better is 13...Nd8!? 14.Bg7 Rh7+=) 14.Nfe5 de5 15.Be5 Qd1 16.Rad1 0–0 (16...f6!? 17.Bc7 Nc3+/–) 17.Rd4 Nd6 18.Nd6 cd6 19.Bd6 Bd6 20.Rd6 Rfd8 21.Rfd1 Re8 22.e3 Re5 23.c4 Re4 (23...Kf8 24.Rd8 Re8 25.R8d7+–) 24.Rd7 Rc4 (24...b6 25.Rc7 a6 26.a4+–) 25.Rb7 Ra4 26.Rdd7 Ra3 (26...g5 27.Rf7 Rb8 28.Rb8 (worse is 28.Ra7 Rb5 29.Rg7 Kf8+–) 28...Kf7 29.Ra8+–) 27.Rf7 a6 (27...g5 28.Rg7 Kh8 29.Rh7 Kg8 30.Rh6+–) 28.Rg7 Kh8 29.Rh7 Kg8 30.b6 Ra2 (30...Rb8 31.Rbg7 Kf8 32.Rc7+–) 31.Rbg7 Kf8 32.Rc7 Kg8 33.b7 Rf2 (33...Re8 34.Rhg7 Kh8 35.Rge7 Rf2 36.Kf2 Rf8 37.Ke2 Rd8 38.Rc8 Rg8 39.Rg8 Kg8 40.b8Q#) 34.Kf2 Rf8 35.Kg2 h5 36.Rcg7# 1–0. usingprogram (1980) – thomas7n, internet, 2012.

5.a3 Bf5 6.d3 g6 7.b5 Na5? (better is 7...Ne7!?+=) 8.Bc3+– c6 (8...b6 9.Ba5 ba5 10.Ba8 Qa8 11.Nf3+–) 9.Qd2 b6 10.Ba5 ba5 11.Bc6 Bd7 12.Ba8 Qa8 13.Nf3 Bb5 14.Qa5 Bc6 15.0–0 Qb7 (15...Bg7 16.Nbd2+–) 16.Nc3 Bh6 (16...Qb6 17.Qb6 ab6+–) 17.Rab1 Qa8 18.Nb5 Bb5 19.Qb5 Nd7 20.Qa6 Ke7 (20...0–0 21.Qd6 Rd8 22.Qc7+–) 21.Rb7 Qc8 22.Qa7 Rd8 (22...Ke6+–) 23.Rc7 Qb8 (23...Qc7 24.Qc7 Rb8 25.e4+–) 24.Rd7! (24.Rd7 Kf8 25.Rf7 Kg8 26.Rh7 Qa7 27.Ra7+– (27.Rh6?! Kg7 28.Rh4 Qa3+–)) 1–0. marekt – Besango, internet simul, 2012.

5.a3 g6 6.c4 (6.Nf3 A) 6...a6 7.c4 Bg7 8.d4 e4 9.Nfd2 Qe7 10.d5=; B) 6...Bg7 7.c4 (7.d3 0–0 8.0–0 Bg4 9.c4 Qd7 10.Nbd2=; 7.0–0 0–0 8.d3 Bg4 9.c4 Qd7 10.Nbd2=) 7...Be6 8.d3 0–0 9.0–0 h6 10.Nfd2=; 6.b5 Na5 7.Bc3 (7.Nf3 a6 8.a4 Nc4 9.Bc3 Bd7 10.d3+=) 7...Nc4 8.d3 Nb6 9.Nf3 a6 10.Ba5+=; 6.d3 Bg7 7.Nf3 (7.c4 0–0 8.Nf3 Re8 9.0–0 Qe7 10.e3=; 7.Nd2 0–0 8.Ngf3 Nd7 9.b5 Ne7 10.0–0=) 7...0–0 8.c4 Re8 9.0–0 a6 10.Nc3=; 6.e3 Bg7 7.Ne2 0–0 8.0–0 Re8 9.d3 Qd7 10.c4=; 6.Nh3 Bf5 7.0–0 (7.Ng5 h6 8.Nf3 Bg7 9.0–0 Qd7 10.c4=) 7...Qd7 8.Ng5 h6 9.Nf3 Bg7 10.c4=; 6.e4 Bg7 7.Ne2 h5 8.h4 0–0 9.0–0 Re8 10.d3=) 6...Bg7 7.e3 (7.d3 0–0 8.Nf3 Bg4 9.0–0 Qd7 10.Nbd2=; 7.Nf3 0–0 8.b5 Ne7 9.d4 ed4 10.Nd4=) 7...0–0 8.Nc3 (8.d3 Bg4 9.Nf3 h6 10.Nc3=) 8...Rb8 (8...Be6 9.d3 a6 10.Nge2=) 9.Qa4 (9.d3 a6 10.Nf3=) 9...Bd7 (9...a6 10.Nge2=) 10.b5+= Ne7 11.Qa7 c6 12.Qa4 Qb6 13.Qb3 Be6 14.a4 d5 15.cd5 cd5 16.Qd1 d4 17.a5 Qc7 18.b6 Qc4 19.Ra4 Qb3 (better is 19...Qa6 20.ed4 ed4+=) 20.Qa1?? (better is 20.Qb3 Bb3 21.ed4 Ba4 22.Na4 ed4 23.Bd4+=) 20...dc3–+ 21.Bc3 Nfd5 22.Ra3 Qc4 23.Ne2 Qc5 ˝–˝. Pruvost,Alain – Leseine,Philippe, Feignies op, 2000.

5.b5 Ne7 6.Nf3 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 g6 10.0–0 Bg7 11.Nc3 0–0 12.Bb2 Bd7 13.Qa1 Qa8 14.Ng5 h6 15.Nge4 Ne4 16.Be4 c6 17.bc6 bc6 18.Ba3 Nc8 19.Qb2 Re8 (19...f5!? 20.Bg2 Qa7=) 20.Ra1+= Qa7 21.Bd6 Qd4 (21...Nd6 22.Qa3 Double attack (22.Ra7 Discovered attack; 22.Ra7 Deflection; 22.Qa3 Decoy; 22.Ra7 Overloading)) 22.Bb4 c5 23.Ba5 Qd6 (23...Qd2?? 24.Rd1 Qg5 25.Rd7+–) 24.Qb7 Ne7 25.Nb5 Bb5 26.Qb5 Rb8 27.Qc4 Kf8 28.Bc3 f5 29.Ra6 Rb1 30.Kg2 Rb6 31.Ra8 Rb8 32.Rb8 Qb8 33.Bd3 e4 (better is 33...Qd6!?+/–) 34.Bg7+– Kg7 35.Qc5 Qb7 36.Ba6! Qd7 (36...Qa6 37.Qe7 Deflection) 37.Qe5 Kh7 38.Bb5 Qb7 39.f3 ef3 40.ef3 f4 (40...Nc6 41.Qd5 Nd8 42.Bc4 Qd5 43.Bd5+–) 41.Qf4 (41.gf4?! Nf5 42.Be2 Qb4 43.Qc7 Ng7+–) 41...Nf5 42.Bd3 Qd7 43.Bf5 gf5 44.d4 Kg6 (44...Qc8 45.Qd2+–) 45.g4 Qe7 (45...Qc6 46.Qf5 Kg7+–) 46.Qf5 (46.Qf5 Kg7 47.Qe5 Qe5 48.de5+–) 1–0. marekt (1840) – kupovgeorge (1610), gameknot.com, 2014.

5.b5 Ne7 6.Nf3= c6 7.a4 Bd7 8.Nc3 Ng6 9.0–0 d5 10.e3 Bg4 11.h3 Be6 12.Ng5 Bf5 13.e4 Be6 14.ed5+= (14.ed5 cd5 15.d4+=). Arkadiy – chesstony, internet, 2007.

4.Bg2 d5

5.a3 Nc6 (--> 4.Bg2 Nc6 5.a3 d5).

5.a3 Nbd7 6.e3 (6.Nf3 e4 7.Nd4 a5=) 6...Bd6 7.Ne2 a5 8.Nbc3 c6 9.b5 0–0 10.0–0 Nb6 11.d3 Bd7 12.a4 (12.bc6 Bc6 13.Qb1 Qd7+=) 12...Qe7 13.Qd2 Bb4 14.bc6 Bc6 15.Qd1 Rfe8 16.Ra2 Rad8 17.Qa1 d4 18.Nd1 Bg2 19.Kg2 Qd7 20.ed4 e4 21.c3 ed3 22.Nf4 d2 23.cb4 Nfd5 24.Bc3?? (24.Nd3 Nb4 25.Nb4 ab4 26.Ne3–+) 24...Nf4–+ (24...Nf4 25.gf4 Qg4 26.Kh1 Qf3 27.Kg1 Re6–+) 0–1. marekt (2185) – angeloyoung (2315), gameknot.com, 2014.

5.a3 Be7 6.Be5 Nc6 7.Bb2 0–0 8.Nf3 Ng4 9.0–0 Bf6 10.d4 Nh6 11.b5 Ne7 12.Nc3 Nhf5 13.e4 de4 14.Ne4 Nd5 15.c4 Nb6 16.Nf6 Qf6 17.Qc2 h6 18.d5 Qd8 19.a4 Nd7 20.Qf5 Nc5 21.Qc2 Bd7 22.Bd4 b6 23.Ne5 Rc8 24.Qc3 Bf5 25.Nc6 Qd7 26.Bg7 Be4 27.Bh6 f6 28.Bf8 Rf8 29.Rfe1 Bg2 30.Kg2 Rf7 31.a5 Rh7 32.h4 Kg7 33.Re7 1–0. marekt (2065) – pedro9686, gameknot.com, 2014.

5.Be5 Bb4 6.Nf3 Nc6 7.Bb2 0–0 8.0–0 Bf5 9.Nc3 Qd7 10.e3 Ne4 11.Ne2 Bg4 (11...f6 12.Rb1=) 12.d3= Bf3 13.de4 Bg2 14.Kg2 Rfd8 15.Qd5 Qd5 16.ed5 Rd5 17.Rfd1 Rad8 ˝–˝. chess_research (2260) – condoru (2070), gameknot.com, 2014.

4.Bg2 Nbd7

5.Nc3 Nb6 6.Nf3 +=.

5.Nc3 Rb8 6.Nb5 (6.a3 Nb6+=) 6...a6 7.Na7 Nb6 (7...d5!?+=) 8.Nc8= Qc8 9.d3 (9.Nf3 e4 10.Ng5 d5+=) 9...Be7 (9...Na4 10.Ba3=) 10.c4 (10.Nf3 Na4 11.Ba3 0–0=) 10...d5 (10...0–0!?=) 11.c5+= Nbd7 12.Qd2 (12.Nf3 d4+=) 12...0–0 (12...a5 13.a3=) 13.e3 (13.Nf3 d4+=) 13...e4 (13...a5 14.a3=) 14.de4 de4 15.Ne2 (15.Rd1 Qe8=) 15...Re8 (15...a5 16.a3=) 16.Bh3 (better is 16.0–0+=) 16...Qd8 (16...Ne5 17.Be5 Qh3 18.Bc7=) 17.0–0 (better is 17.Rd1!? Nc5 18.bc5 Bc5 19.Qc2 Bb4 20.Kf1+–) 17...Nf8 (17...Ne5 18.Qc3 Nf3 19.Kg2=) 18.Qc2 (18.Nd4 b6 19.c6 Qd6=) 18...Qd5 (18...Qd3 19.Qd3 ed3 20.Nf4+=) 19.Rad1+= Qh5 (19...Qa2?? 20.Nc1 Qd5 21.Rd5 Nd5 22.Qe4+–) 20.Nf4 Qg5 21.Bf6 Bf6 22.Rd5 (22.Bg2 a5+/–) 22...Re5 (22...Be5 23.Rfd1 f5 24.R5d2+=) 23.Rfd1+= Rd8 (23...a5 24.Re5 Be5 25.Qe4 Bf4 26.Qf4 (worse is 26.ef4 Qh5 27.Rb1 Qh3–+) 26...Qf4 27.gf4 ab4 28.Rd4+/–) 24.Rd8+/– Bd8 25.Bg2 f5 26.Qc4 Kh8 27.Rd5 Qf6 28.Qd4 Rd5= 29.Qd5 c6 30.Qd4 Qd4 31.ed4 Bf6 32.d5 Bc3 33.dc6 bc6+= 34.f3 g5 (34...Bb4 35.fe4 Bc5 36.Kf1+=) ˝–˝. Kamenik,Petr – Panik,Tomas, Czech Fed–ch U14, 1997.

5.c4 c6 6.e3 d5 7.cd5 cd5 8.Qb3 e4 9.Ne2 Nb6 10.0–0= Be7 11.Nd4 0–0 12.f4 Nc4 13.Bc3 a5 14.a3 ab4 15.ab4 Bd7 16.Na3 Na3 17.Ra3 Qc7 18.Rfa1 Ra3 19.Qa3 Bc6 20.Bf1 Nd7 21.Nf5+/– Nf6 22.Qa5 Qd7 23.Ne7 Qe7 24.b5 Bd7 25.Bb4 Qd8 26.Bf8 Qa5 27.Ra5 Kf8 28.Ra7 Ke7 29.Rb7 Kd6 30.d4 Ng4 31.Bh3 h5 32.Bg4 hg4 33.Kf2 f5 34.Ke2 g6 35.Kd2 Ke7 36.Kc3 Kd8 37.Kb4 Kc8 38.Rd7! (38.Rd7 Kd7 39.Kc5+–) 1–0. Cantos Conejero,J (2020) – Rodriguez Vinuesa,Rocio (2560), Nijar Espana, 2002.

5.c4 Be7 6.d3 0–0 7.Nd2 c6 8.Ngf3 Re8 (8...Qb6 9.Bc3+=) 9.0–0= Nf8 10.Nb3 Bd7 11.a3 Qc8 12.c5 Bh3 13.Rc1 Bg2 14.Kg2 Ng6 15.h3 e4 (15...Qe6 16.cd6 Bd6 17.Qc2+=) 16.de4= Ne4 17.Qd3 d5 18.e3 h5 19.Nbd4 White plans b5 19...Bf6 20.Rc2 Qd7 21.a4 White prepares b5 21...Re7 22.b5 Rae8 23.bc6 bc6 24.Qa6 Rc8 25.Ba3 (25.Qd3 Rb8=) 25...Ne5 26.Ne5 Be5 27.Nf3 Bf6 28.Rb1 g5 29.Qe2 (29.Bb2!? g4 30.hg4 hg4 31.Nd4=) 29...g4 30.hg4 hg4 31.Nh2 d4 (better is 31...Nc3!? 32.Ng4 Bg7 33.Rc3 Bc3 34.Nh6 Kg7=) 32.Rd1 (32.Ng4 d3 33.Qf3 dc2–+; 32.Qg4?! Kf8 33.ed4 Qg4 34.Ng4 Bd4+/–) 32...Qd5 Attacks the isolani on c5 33.Qg4 Ng5 34.Nf3 Rce8? (34...Qf3 35.Qf3 Nf3 36.Kf3 de3 37.fe3+/–) 35.ed4 (better is 35.Bb2!?+–) 35...Kg7 36.Rh1 Rg8 37.Bc1 Re4? (better is 37...Qf3!? 38.Qf3 Nf3 39.Kf3 Rb8+–) 38.Qh5+– Kf8 39.Qh6 Ke7 40.Bg5 Rg5? (40...Bg5 41.Qh7 Rg6+–) 41.Rb2 (41.Ng5?! Bg5 42.Qd6 Qd6 43.cd6 Kd6+–) 41...Rf5 (41...Rg7 42.Rb7 Ke6+–) 42.Rb7 Ke6 (42...Kd8 43.Rb8 Kd7+–) 43.Qf8 (43.Ra7? Re2 44.Qf4 Rf4 45.gf4 Qe4–+ (45...Bd4?! 46.Rh6 f6 47.f5 Kf5 48.Rh5 Ke4 49.Rh4 Kf5 50.Rh5 Ke4 51.Rh4 Kf5 52.Rh5=)) 43...Bd4 44.Qe7 1–0. Calvelo,Jelvis (2105) – Lim Kian Hwa (1915), Penang MAS, 5th Open, 2013.

5.c4 g6 6.d3 Bg7 (6...a5 7.b5=) 7.a4 (7.Nf3 0–0=) 7...a5 8.ba5 (8.b5 0–0+=) 8...Ra5 9.Nd2 0–0 10.Nb3 Ra6 11.a5 Re8 12.Qc2 Qe7 13.e3 h5 (13...Nb8 14.Nf3+=) 14.h3 Nc5 15.Ne2 Ne6 (15...Nb3 16.Qb3 Nd7 17.Qc2+= (17.Bb7?? Nc5 18.Qc2 Bb7–+)) 16.Nc3= c6 17.Na2 (17.Na4 h4=) 17...Ra8 (17...d5 18.Be5 Ng5 19.Bd4 dc4 20.Qc4=) 18.Bc3 (18.Nc3 Ra7=) 18...c5 (18...Bd7 19.Nb4+=) 19.Bb2 Nc7 20.Nc3 Na6 21.Qd2 Bf5 22.e4 Bd7 (22...Be6 23.Na4=) 23.0–0= Nb4 24.Ba3 (24.Na4 Be6=) 24...Nc6+= Attacking the isolated pawn on a5 25.Nd5 Nd5 26.cd5 Nd8 (26...Na7 27.h4+=) 27.Bb2 h4 28.g4 Kh7 (28...f5 29.gf5 gf5 30.ef5 Bf5 31.Rae1=) 29.Bc1 (29.Qe2 Ra6+=) 29...f6 (29...f5 30.f3=) 30.Rb1 Nf7 31.Qe1 (31.Qc3 Qd8+=) 31...f5 32.Nd2 (better is 32.f3=) 32...fg4–+ 33.Rb7 (better is 33.hg4 Bg4 34.Nc4–+) 33...Qd8?? (better is 33...gh3 34.Bf3 Rf8–+) 34.hg4= Qc8 (34...Ra5 35.Nc4 Rb5 36.Ra7=) 35.Rb6+= Bg4 (better is 35...h3!? 36.Bh3 Bg4+=) 36.f3+/– Bh5 37.Qh4 Ra5 38.Nc4 Ra6? 39.Bh3+– Qa8 40.Ra6 Qa6 41.Bg4 Bh6? 42.Bh5 gh5 43.Qf6 Rf8? 44.Ne5! Ne5 45.Qh6 Kg8 46.Kh1 Qc8 47.Rg1 Kf7 48.Rg7 Ke8 49.Qh5 Nf7 50.Kg2 Qd7 51.Qg6 Kd8 52.Qe6 Kc8 53.f4 Kd8 54.f5 Kc7 55.Bg5 c4 56.dc4 Kc8 57.Be7 1–0. Hepting,Heinrich (2150) – Hirn,Oskar (2140), 3rd Mittelfranken–ch HT, 2004.

5.e3 Be7 (--> 4.Bg2 Be7 5.e3 Nbd7).

5.Nf3 e4 6.Nd4 d5 +=.

4.Bg2 Be7

5.a3 a5 =+.

5.a3 c6 6.c4 Be6 7.d3 Nbd7 8.Nd2 Qc7 9.Ngf3 0–0 10.0–0 a5 11.b5 c5 12.Ng5 Bf5 13.Nge4 Rad8 14.Nf6 Bf6 15.Bc3 b6 16.Ne4 Be4 17.Be4 g6 18.Bd5 Bg7 19.e4 Kh8 20.f4 ef4 21.Bg7 Kg7 22.Rf4 Ne5 23.d4 cd4 24.Qd4 Qc5 25.Rd1 f6 26.Rf2 Ng4 27.Re2 Ne5 28.Kg2 Qa3 29.Re3 Qc5 30.Qc5 (better is 30.Qc3!?+=) 30...dc5–+ (worse is 30...bc5 31.Ra1+/–) 31.Rc3 f5 32.Re1 f4 33.gf4 Rf4 34.Rf1 Rdf8 35.Rf4 Rf4 36.Kg3 Rf1 37.Ra3 Rc1 38.Ra4 Rc3 39.Kg2 Rd3 40.Ra2 Rd4 41.Kf2? (better is 41.Ra4–+) 41...Nc4 42.Ra4 Nd6 43.Rd4 cd4 44.Bc6 a4 45.Ke2 (45.e5 Nc4 46.e6 Kf6–+) 45...a3 46.Bd5 Nb5 47.Kd3 Nc3 (better is 47...Kf6!? 48.Bg8–+) 48.Bb3 a2 49.Ba2 Na2 50.Kd4 Kf6 51.Kd5 Nc3 (51...Nc3 52.Kc6 Ne4 53.Kb6 Kf5–+) 0–1. Snihur,Piotr – Karwowski,Kacper, Mistrzostwa Polski Juniorow Poland, 2008.

5.a3 c6 6.e3 Be6 7.Ne2 Nbd7 8.0–0 0–0 9.d4 Qc7 10.Nd2 Rad8 11.c4 d5 12.Qc2 Qb8 13.Rfd1 e4 14.Rac1 Rc8 15.Nf4 Bg4 16.Re1 Bd6 17.Qb3 Bf4 18.gf4 Be6 19.cd5 cd5 20.a4 b5 21.ab5 Qb5 22.Qa3 Nb6 (22...Rc1 23.Rc1 Qe2 24.Nb1+=) 23.Rc5= Qa4 (23...Qd7 24.Rec1=) 24.Rec1 Qd7 25.Rc8 Rc8 26.Qa1 Bh3 27.Rc8 (27.Bh3 Qh3 28.Qa7–/+) 27...Nc8–/+ 28.Bh3 Qh3 29.Qf1 Qd7 30.f3 Qa4 31.Qc1 Nb6 32.fe4 de4 33.Ba3 h6 34.h3 Nbd5 (better is 34...Qa6–+) 35.Ne4= Ne4 36.Qc8 Kh7 37.Qf5 Kg8 38.Qe4 (38.Qd5?? Qd1 39.Kg2 Qe2 40.Kh1 Qf3 41.Kg1 Qg3 42.Kf1 Qf2) 38...Qa3 Attacks the backward pawn on e3 39.Qd5 Qe3 40.Kg2 Qf4 41.Qa8 Kh7 42.Qa7 Qd2 43.Kg3 Qb4 44.Qf7 Qd4 45.Qf5 Kg8 46.h4 Qg1 47.Kh3 ˝–˝. Agienko,Maria (2025) – Shelestova,Darya, RUS–ch U18 Girls, 2009. (=1.a3 e5 2.b4 Nf6 3.Bb2 d6 4.g3 Be7 5.Bg2)

5.a3 c6 6.Nf3 Qc7 (6...0–0 7.0–0+=) 7.0–0= 0–0 8.c4 Be6 9.d3 (9.Qc2 Nbd7=) 9...Nbd7 10.Nbd2 (10.Nc3 Rfe8=) 10...d5 11.cd5 Nd5 (11...cd5 12.Rc1 Qd6 13.Ng5=) 12.Nc4 (12.e4 N5f6=) 12...f6 13.Rc1 Qd8 (13...Rac8 14.Qc2=) 14.Nfd2 (14.Qc2 c5 15.bc5 Nc5+=) 14...N7b6 (14...b5 15.Na5 c5 16.Nc6=) 15.Na5 (15.d4 ed4 16.Bd4 Nc4 17.Nc4 Nc7=) 15...Rb8 16.Ne4 (16.Nac4 Qd7=) 16...Bf7 (16...Qd7 17.Nc5 Bc5 18.bc5=) 17.Bh3 Nc7 (17...Qc7 18.b5 Nc8 19.Qd2=) 18.Nb3 (18.Nc4 Ne6=) 18...Be6 (18...Na4 19.Ba1+=) 19.Bg2 (19.Be6 Ne6 20.Qc2 Nd5=) 19...Na4 20.Ba1 (20.Nbc5 Bc5 21.Qa4 Bb6=) 20...Nb5 21.Nbd2 Nb6 22.a4 Nd4 23.Nc5 Bf7 (23...Bc5 24.bc5 Nd7 25.e3=) 24.e3 Ne6 25.Nde4 Nd5 26.Bc3 (26.Qg4 Qc8=) 26...Nc3 27.Rc3 f5 (27...Nc7 28.Qc2+=) 28.Ne6= Be6 29.Nc5 Bc5 30.bc5 Qa5 31.Qc2 Rfd8 32.Rb1 Qa6 33.Bf1 Qa5 34.Qb2 Bd5 (34...b5 35.Rcc1 Qc7 36.ab5 Rb5 37.Qa1=). Hoang Thang Trang (2260) – Csomor,B, Szivarvany rapid, 1994.

5.Nc3 c6 6.e3 (6.Nf3 A) 6...Qc7 7.0–0 (7.a3 0–0 8.0–0 d5 9.Na4 Nbd7 10.Nh4+=; 7.e3 d5 8.a3 0–0 9.0–0 b5 10.Ne2+=) 7...d5 8.a3 0–0 9.Na4 Nfd7 10.d4+=; B) 6...0–0 7.a3 (7.0–0 Nbd7 8.a3 d5 9.e3 Re8 10.d3+=) 7...a5 8.b5 e4 9.Nd4 d5 10.0–0+=; C) 6...Nbd7 7.0–0 (7.a3 d5 8.0–0 0–0 9.e3 b5 10.Ne2+=) 7...d5 8.a3 0–0 9.e3 Re8 10.d3+=; 6.a3 d5 7.Nf3 Qd6 8.0–0 0–0 9.Nb1 Nbd7 10.d4–/+) 6...d5 7.d4 (7.a3 0–0+= 8.Nge2 b5 9.Na2 Bd6 10.f4+=) 7...e4–/+ 8.a3 Nbd7 (8...a5 9.b5 cb5 10.Nb5–/+) 9.Nge2 (9.f3!?+= ef3 10.Nf3+=) 9...Nb6–/+ 10.Rc1 (10.f3 ef3 11.Bf3 a5–/+; 10.0–0–/+) 10...Nc4 11.Rb1 Bg4 12.Bc1 b5 13.a4? (13.h3 Bh5–/+) 13...a6 (13...a5!? 14.Na2 ba4 15.Bd2–+) 14.0–0 (14.h3 Be2 15.Ne2 ba4–+) 14...Qd7 (14...a5 15.h3 Be2 16.Ne2 ba4 17.ba5 Ra5 18.Nc3–+) 15.Qe1 h5 16.Nf4 (16.h4 Bd6–/+) 16...h4 17.h3 g5 18.ab5 (18.Nfd5 cd5 19.hg4 h3–+) 18...ab5 (better is 18...gf4 19.bc6 Qc6 20.ef4–+) 19.Nce2? (better is 19.Nfd5 cd5 20.hg4–+) 19...gf4 20.hg4 (20.Nf4 Bf3 21.Bf3 ef3 22.g4–+) 20...f3 21.Bh3 (21.Nf4 fg2 22.Kg2 Qg4–+) 21...fe2 (better is 21...hg3!? 22.fg3 fe2 23.Rf6 Bf6 24.Kg2–+) 22.Qe2 hg3 23.Kg2 gf2 24.Rh1 f1Q! 25.Qf1 (25.Qf1 Ng4; 25.Kf1 Rh4; 25.Rf1 0–0–0) 25...Ng4 26.Bg4 (26.Qf4 Rh4 27.Kg1–+) 26...Qg4 27.Kf2 Qf3 28.Ke1 Rh1 (28...Rh1 29.Qh1 Qh1 30.Ke2 Qf3 31.Ke1 Bh4#) 0–1. Santos,Paulo – Dames,Thiago, Naval CC, 1995.

5.Nc3 d5 6.a3 Nc6 7.e3 Bg4 8.Nge2 0–0 9.0–0 Qd7 10.d3 +=.

5.c4 a6 6.Nf3 0–0 7.0–0 Be6 8.d3 Nc6 9.a3 Qd7 10.Nc3 Bh3 11.Nd5 Bg2 12.Kg2 Bd8 13.d4 e4 14.Nd2 Ng4 15.h3 Nf6 16.Nf6 Bf6 17.Ne4 Be7 18.d5 Nd8 19.Qd4 f6 20.c5 dc5 21.bc5 Qb5 22.d6 Ne6 23.Qd5 Qb2?? 24.Qe6 Kh8 25.de7 Rfe8 26.Rab1 (26.Rab1 Qa3 27.Rb7+–) 1–0. Wall,Bill – Pawnbroker, Microsoft Gaming Zone, 1999.

5.c4 b6?? 6.Ba8+– 0–0 7.Bg2 c5 8.bc5 dc5 9.Be5 Nc6 10.Bc6 Bd7 11.Bg2 Be6 12.d3 Bd6 13.Bd6 Qd6 14.Nf3 h6 15.0–0 Bg4 16.Nc3 a6 17.a4 Qe6 18.Qc2 (18.Qc2 a5 19.Rab1+–) 1–0. rampantpawn – nandy conure, ChessWorld.net, 2005.

5.c4 c5 6.bc5+= dc5 7.Be5 0–0 8.Qb3 Nbd7 9.Bf4 Nh5 10.Be3.

5.c4 c5 6.bc5+= dc5 7.Nf3 e4 8.Ng5 Bf5 (8...0–0 9.Ne4 (9.Be4? h6–+) 9...Nc6 10.0–0+/– (10.Nf6 Bf6 11.Bf6 Qf6 12.Nc3+/–)) 9.Nc3+/– Qb6 (9...Nc6 10.Nge4+/– (< 10.Be4 Ne4 11.Nge4 0–0=; 10.0–0+/–); 9...0–0 10.Nge4) 10.Qb3 Qb3 11.ab3 Nc6 12.Nce4 Ne4 13.Be4 Be4 14.Ne4 0–0 15.g4 Nb4 16.0–0 a6 17.Bc3 Nc6 18.Kg2 b5 19.Ra2 b4 20.Bb2 a5 21.f4 Rfd8 22.g5 g6 23.Rfa1 Bd6 24.Nf6 Kf8 25.Nh7 Ke7 26.Bf6 (26.Bf6 Ke6 27.Bd8 Rd8 28.Nf6 Bf4 29.Ne4+–) 1–0. pierre – moh1, internet, 2009.

5.c4 c5 6.bc5 dc5 7.Nf3 Bg4 8.Ne5 Bh3 9.Bh3 Bd6 10.Qa4 Nbd7 11.Nd7 Qd7 12.Bd7 1–0. usingprogram (2010) – pablanch, internet, 2013.

5.c4 Nc6 6.Qa4 Qd7 7.Nf3 a6 8.Nc3 Nd4 9.Nd4 ed4 10.Qd7 Bd7 11.Nb1 c5 12.0–0 Bc6 13.f3 0–0 14.a4 b6 15.Re1 Rfe8 16.b5 Bb7 17.e4 Ra7 18.Na3= Raa8 19.ba6 Ra6 20.Nb5 Ra5 21.Reb1 Rea8= 22.Nc7 Rc8 23.Nb5 Bc6 24.Re1 Rca8 25.Nc7 Rb8 26.Ra2 Ba4–/+ 27.Ra3 Bd7 28.Rb3 b5 29.Nb5= Ra2 30.Rb1 Be6 31.d3 Nd7 32.f4 f5 33.Bh3 g6 34.ef5 gf5 35.Re1 Kf7 36.Bg2 Rb6 37.Rb1 h6 38.Ra3 Ra6 39.Ra6 Ra6 40.Nc7 Ra2 41.Ne6 Ke6 42.Bd5 Kf6 43.Bc6 Nf8 44.Kf2 Ne6 45.Kf3 Ra6 46.Bb7 Rb6 47.Bd5 Rb3 48.Ke2 Rb4 49.h3 Ra4 50.Bc1 Ra2 51.Kf3 Rh2 52.h4 Rh1 53.Kf2 Rd1 54.Ke2 Rg1 55.Kf2 Rd1 56.Be6 Ke6–/+ 57.Ke2 Rh1 58.Ra1 d5 59.Ra6 Kf7 60.Ba3 Rh2 61.Kd1 dc4 62.dc4 Rh1 63.Kd2 Rg1 64.Rh6 Rg2 65.Kd1 Rg3 66.Rh7 Kf6 67.Rh6 Rg6 68.Rg6 Kg6 69.Kd2 Kh5 70.Kd3? Kh4 71.Bb2 Kg4 72.Bc1 Bd6 73.Ba3 Kf4 74.Bb2 Kf3 75.Ba3 f4 76.Bb2 Kg2 77.Ba3 f3 78.Bb2 f2 79.Ke4 f1Q 80.Kd5 Bf8 81.Kc6 0–1. Fritz 5.32 – Fritz 8, 2004.

5.c4 Nbd7 6.d3 0–0 7.Nf3 Rb8 8.0–0 b6 9.Qa4 a5 10.ba5 ba5 (10...Nc5 11.Qb4=) 11.Bc3+= Nb6 12.Qc2 (12.Qa5 Bd7+=) 12...a4= 13.c5 dc5 (13...Nbd5!?+=) 14.Ne5+= Bd7 15.Nd2 Qe8 (15...Nfd5 16.Nd7 Qd7 17.Bb2+=) 16.Rab1+/– Bd6 17.Nd7 Nfd7 18.e4 (18.e3 Qe6+/–) 18...f6 19.f4 Rf7 20.Rfe1 Re7 21.Nf3 Qh5 22.Re2 Rbe8 23.Rbe1 Kh8 24.h3 (better is 24.Nh4+/–) 24...Qf7? (better is 24...c4 25.dc4 Qc5 26.Kh2 Qc4+=) 25.e5+– Nd5 26.Ba1 fe5 27.fe5 (27.Ne5?! Be5 28.Be5 Nb4+=) 27...Nb4 28.Qd2 c4 (28...Nb6+–) 29.ed6 Re2 30.Re2 (30.Qb4 c5 31.Qc3 cd3=) 30...cd3 (30...Nd3 31.Re8 Qe8+–) 31.Re8 (31.Qb4?! de2 32.Ne1 cd6 33.Qd6 Nf8+=) 31...Qe8 32.Qb4 Qe3 33.Kh2 (33.Kh2 cd6 34.Qd6+–) 1–0. Hadj Sassi,Nabil (1885) – Huebscher,Joachim, 5. Eckbauer Open, 2002.

5.c4 Be6 6.d3 c6 7.Nd2 Nbd7 8.Ngf3 0–0 9.h4 Rc8 10.Ng5 d5 11.Ne6= fe6 12.Qb3 Kh8 13.Bh3 Qb6 14.c5+= (14.c5 Qc7 15.Be6+=). Nguyen Thai Binh (2265) – Le T Minh,Nhut, VIE–chT, 2003.

5.c4 Be6 6.d3 d5 7.c5 Nbd7 8.Nf3 a5 9.a3 0–0 10.Ne5= ab4 11.ab4+= Ra1 12.Ba1 Qa8 13.Nd7 Nd7 14.Bc3 Rd8 15.0–0+/– c6 16.Nd2 (16.Nd2 b6 17.cb6 Nb6 18.Qc2+/–; 16.f4 f5+/–) 1–0. hal1958 – pawntrader, playchess.de, 2002.

5.d3 a6 6.Nf3= Nc6 7.a3 Bg4 8.c4 Qc8 9.0–0 Bh3 10.Nc3 0–0 11.Nd5 Nd5 12.cd5 Bg2 13.Kg2 Nd8 14.e4 Qg4 15.Qc2 Rc8 16.h3+= Qg6 17.d4 f6 18.Nh4 Qf7 19.f4 ef4 20.gf4 Kh8 21.Kh2 g6 22.Nf3 h6 23.e5 Qd5? 24.Qg6?? Nf7+/– 25.e6 Qe6?? 26.Rae1+– Qb3 27.Re7 Qb2 28.Kh1 Rg8 29.Qf6 Rg7 30.Rg1 Rcg8 31.Rf7 Qc3 32.Qh6 (32.Qh6 Rh7 33.Qh7#; 32.Qg7?! Rg7 33.Rgg7 Qf3 34.Kh2 Qf2 35.Rg2 Qd4=; 32.Rgg7 Qf3 33.Rg2 Rg7 34.Qg7#) 1–0. Kuchkin,Maksim (2025) – Manelidou,Maria (1770), Halkidiki GRE 2nd Open, 2006.

5.d4 ed4 6.Qd4 0–0 7.Nf3 Nc6 8.Qh4? h6 9.0–0 Nd5–/+ 10.Qh5 Be6 11.h3 Ncb4 12.Na3 Bf6 13.Rab1 Na2–+ 14.Ng5?? Bg5 15.h4 Nf6 16.Qf3 Bg4 17.Qd3 Nb4 18.Qc3 Na2?? 19.Qc4?? Be6–+ (19...Be6 20.Qd3 Nd5 21.hg5 Ndb4–+) 0–1. GammaChess – mcac, internet, 2007.

5.d4 ed4 6.Bd4 0–0 7.Nf3 Nc6 8.c3 Nd4 9.cd4 Bf5 10.Nbd2 Bd7 11.0–0=+ Rb8 12.a4 b6 13.b5= c6 14.e3 cb5=+ 15.ab5 Bb5 16.Re1 a6 17.Qc2 Rc8 18.Qb2 d5 19.Ne5 Nd7 20.Rec1 Ne5 21.de5 f6 22.Rc8= Qc8 23.Bd5 Kh8 24.Rc1 Qf5=+ 25.Be4 Qe5–/+ 26.Qe5 fe5 27.Kg2 Ba3 28.Ra1 Bb2 29.Rb1 Bc3=+ 30.Nf3 Rb8 31.Rd1 Be2 32.Rc1=+ Rc8 33.Ne5= b5 34.Bb7 Rc5 35.Nf3?? b4–/+ 0–1. coloplayah (2140) – petemarkou (2060), net–chess.com, 2006.

5.e3 a6 6.d4 ed4 7.ed4 0–0 8.Nc3 Bf5 (8...Nc6!?=) 9.Bb7+= Ra7 10.Bg2 c6 11.Nf3 Bg4 (11...a5!? 12.b5 cb5 13.Nb5 Rb7+=) 12.0–0+/– d5 13.a3 Re8 14.Re1 Bd6 15.Re8 Qe8 16.Qd3 g6 17.Ne5! Be5?? (better is 17...Bf5 18.Qd2 Re7+/–) 18.de5+– Qe5 19.Na4 Qh5 (19...Qd6 20.Qd4 Re7 21.Qf6 Qf6 22.Bf6 Re6+–) 20.Qd4 (20.Qd4 Nbd7 21.Qa7+–) 1–0. marekt – buckky, internet, 2012.

5.e3 a6 6.Ne2 Nc6 7.a3 0–0 8.0–0 Bf5 9.d4 Qd7 (9...e4 10.c4 Qd7 (10...Qc8 11.Nd2 a5 12.b5 Nd8 13.Nc3 Bh3+/–; 10...d5 11.cd5 Qd5 12.Nbc3 Qc4 13.Rc1 Qd3+=) 11.Nd2 d5 12.cd5 Qd5 13.Nf4 Qd7=) 10.d5 (10.c4 Bh3 (10...ed4) 11.d5 Bg2 12.Kg2 Nd8 13.Nbc3 Qg4=; 10.Nd2 Bh3 (10...ed4) 11.c4 Bg2 12.Kg2 ed4 13.Nd4 Ne5=) 10...Nd8 (10...Na7 11.Nd2 Bh3 12.e4 Bg2 13.Kg2 Nc8=) 11.c4 (11.Nbc3 Re8 12.e4 Bh3 13.Qd3 Bg2=) 11...a5 12.Nbc3 ab4 13.ab4 Ra1 14.Ba1 (worse is 14.Qa1 Bd3+=) 14...Bh3 15.Qd3 c6 16.f3 cd5 17.cd5 Bf5 18.e4 Bg6 19.Qb5 Bh5 20.Rc1 Qb5 21.Nb5 Ne8 22.g4 Bg6 23.Ng3 Bg5 24.Rc8 Be3 25.Kh1 Bg5 26.Bb2 h6 27.Bc1 Bc1 (27...Be7 28.f4+–) 28.Rc1 (28.Rd8?! Nf6 29.Rf8 Kf8 30.Nd6 Ba3+/–) 28...f6 29.Rc8 Nf7 30.Rb8 Ng5 31.Na7 Kh8 (31...Bh7 32.h4 Nf7 33.Rb7+–) 32.h4 (32.Rb7?! Rf7 33.Rf7 Nf7+–) 32...Nf7 33.Bf1 Kg8 34.Nc8 Nh8 35.b5 b6 (35...Bf7 36.Rb7 Ng6 37.b6+–) 36.Nb6 Nc7 37.Nc8 (37.Nc8 Kh7 38.b6 Nd5 39.ed5+–) 1–0. Ermolaev,Andrey (1850) – Niewold,Jaap (1730), internet, 2004.

5.e3 c6 6.Ne2 Be6 7.d3 Nbd7 8.Nd2 Qc7 9.c4 Rc8 10.0–0 0–0 11.Qc2 a6 12.d4 White intends c5 12...d5 (12...h6 13.Rfe1=) 13.c5 (13.a3 e4=) 13...e4 14.a4 b5 (14...Nh5 15.f3 ef3 16.Nf3=) 15.f3 (15.Ra3 Ra8+=) 15...ef3= 16.Rf3 Bg4 17.Rf2 Be2 (better is 17...Rfe8!?=) 18.Re2+/– h6 (18...Rfe8 19.e4+/–) 19.a5 (19.e4 de4 20.Ne4 Nd5+/–) 19...Rfe8 20.Rf1 Bf8 21.Bh3 (21.Qf5 Re6+/–) 21...Re7+= 22.Nf3 (22.Rfe1 Rce8+=) 22...Rce8 23.Bc1 (23.Ne5 Ne5 24.de5 Ne4+=) 23...Ne4 24.Rg2 1–0. Polkowski,Piotr (2165) – Greszeta,Robert, IV Miedzynarodowy Turniej Szachowy Poland, 2012.

5.e3 Nbd7 6.Ne2 0–0 7.d3 a5 8.b5 Nc5 9.Nbc3 Rb8 10.0–0 b6 11.d4 ed4 12.Nd4 Bd7 13.Re1 Ne6 14.Qe2 Nd4 15.ed4 Re8 16.Qc4 Be6 17.Re6 fe6 18.Qe6 Kh8 19.Bc6 Rf8 (19...Bf8!? 20.Be8 Qe8+/–) 20.Re1+– Ng8 21.Nd5 Bf6 22.Bc3 Bg5 23.f4 Bf6 24.Kg2 Qc8 25.Bd7 Qb7 26.Re4. Fritz11 – jumbo, casual, 2013.

5.e3 Nbd7 6.Ne2 0–0 7.d3 Re8 8.c4 c6 9.Nd2 b6?? (better is 9...d5 10.cd5 Nd5+=) 10.Bc6+/– Qc7?? (better is 10...Rb8+/–) 11.Ba8+– Bb7 (11...d5 12.Qb3 dc4 13.dc4+–) 12.Bb7 Qb7 13.0–0 d5 14.Qb3 dc4 15.Nc4 Qf3 16.Nc3 Qh5 17.Kg2 Nf8 (17...a6 18.b5 Nc5 19.Qd1+–) 18.Qa4 Rd8 19.Qa7 Bb4 20.Qb6 Bc3 (20...Be7 21.Rfd1 N8d7 22.Qa5+–) 21.Qd8 Bb2 22.Rab1 h6 (22...Ba3 23.Na3 N6d7 24.Rb7+–) 23.Rb2 Kh7 (23...N6d7 24.Nb6 Nf6 25.Nc8+–) 24.Qf8 1–0. marekt (2000) – bblchess (1625), gameknot.com, 2014.

5.e3 Bg4 6.Ne2 c6 (6...Nbd7 7.h3 Be6 8.b5 Bd5 9.Bd5 Nd5 10.Nbc3 Nc3+=; 6...a5 7.b5 c6 8.h3 Bd7 9.f4 cb5 10.Bb7 Ra7=) 7.0–0 (7.h3 Be6 8.f4 Nbd7 9.Nbc3 Qb6 10.a3 a5+=) 7...0–0 (7...Qb6 8.Bc3 0–0 9.h3 Be6 10.a4 Nd5+=; 7...Nbd7 8.Nbc3 d5 9.f3 Bh5 10.a3 Nb6+=) 8.d4 (8.f3 Bf5 9.f4 e4 10.a3 a5+=) 8...e4 9.Nd2 (9.c4 d5 10.c5 b6+=) 9...d5 10.a3 Qd7 (10...a5–/+) 11.c4 Bd6 12.Rc1 Re8 13.Qe1 Bc7 (13...a5 14.ba5 Ra5 15.c5+=) 14.Nb3 (14.Nc3 Bh3=) 14...b6 15.c5 (15.Nc3 dc4 16.Nd2 Bh3 17.Nc4 Bg2 18.Kg2 b5+=) 15...b5 16.Nf4 Bf4 17.ef4 Bh3 18.Qd2 Bg2 19.Kg2 Qg4 20.Qe3 Qh5 21.h3 Qf5 22.Rce1 a6 23.Kh2 Re6 24.Rh1 Ra7 (24...Qh5 25.Kg2+=) 25.Reg1 (25.g4 Ng4 26.hg4 Qg4+=) 25...h5 26.Kg2 Rae7 27.Kf1 Re8 28.Na5 R8e7 29.Bc1 g6?? (better is 29...Rd7=) 30.g4!+– hg4 (30...Ng4 31.hg4 hg4 32.Ke1+–) 31.hg4 Ng4 32.Qh3 Qh5 33.Rg4 Qh3 34.Rh3 f5 35.Rgh4 Kg7 36.Nb7! Kf6 37.Nd8 Nd7 38.Ne6 Re6 39.Rh7 Nf8 40.Ra7 Re7 41.Ra6 Rc7 42.Ra8 Ne6 43.Be3 Kg7 44.Rah8 Kf6 45.R3h7 Ng7 46.Rf8 Ke6 47.Rg8 Kf6 48.Ke2 Ra7 49.Rf8 Ke6 50.Bc1 Rc7 51.Rh6 Ke7 52.Ra8 Kf6 53.a4 ba4 54.Ra4 Rb7 55.Bd2 Ne6 56.Ra6 Nd4 57.Kd1 Rc7 58.Bc3 Kg7 59.Rh2 Kf6 60.Bd4 Ke6 61.Rh6 Rg7 62.Bg7 d4 63.Rc6 Kd5 64.Rd6 Kc4 65.Rd4 Kb5 66.Rg6 Ka4 67.Ra6 Kb5 68.Rdd6 Kb4 69.c6 Kb3 70.c7 Kb4 71.c8Q Kb5 72.Rdb6 1–0. Franke,Danny – Kersting,Stefan, NRW–chT U20 GER, 1995.

5.Nf3 a6 6.0–0 Nc6 7.a3 Bd7 8.d4 ed4 9.Nd4 0–0 10.c4 Rb8 11.Qc2 Nd4 12.Bd4+= Bc6 13.f3 Nd7= 14.Nc3 Bf6 15.e3 Re8? 16.b5+– ab5 17.cb5 Bb5 18.Nb5 c5 19.Bf6 Qf6 20.e4 Ne5 21.Rad1 Red8 22.Rd5 Rd7 23.f4 Ng6 24.Rfd1 Ra8 25.e5 Qe6 26.f5 Qe7 27.fg6 hg6 28.Nd6 (28.Nd6 Qg5 29.R1d3+–) 1–0. orane – tlau, caissa.com, 2006.

5.Nf3 c6 6.c4 b5 (better is 6...Be6!?+=) 7.cb5+= Qb6 8.a4 a5 (8...a6 9.d4+=) 9.ba5+/– Ra5 10.Bc3 Ra8 11.Na3 Ne4 12.0–0 Nc3 13.dc3 e4 14.Qd4 Qd4 15.Nd4 Ra4 16.Be4?? (16.bc6 d5 17.Nab5 Ra1 18.Ra1+–) 16...d5–/+ 17.Bd3 (17.Bg2 Ra3 (worse is 17...Ba3 18.Nc2+/–) 18.bc6 Na6+= (worse is 18...Rc3 19.Ra8+=)) 17...Ra3 (17...Ba3 18.Nc2 Bh3 19.Rfb1+/– (worse is 19.Na3 Bf1 20.Kf1 Ra7+=)) 18.Ra3 (18.bc6 Bc5–/+) 18...Ba3 19.Ra1 Bd6 20.bc6 0–0 (20...Be5 21.Bb5–/+) 21.Ra8 Nc6?? (better is 21...Be6–/+) 22.Nc6+/– Bb7 23.Rf8 Bf8 24.Bb5 Bd6 25.Nd4 Be5 26.e3 Bd4 27.cd4+– f5 28.Bd7 g6 29.g4 fg4 30.Bg4 Kf7 31.Kf1 Kf6 32.Ke2 h5 33.Bh3 Kg5 34.Kd3 Ba6 35.Kc3+– Kf6 36.Kb4 Be2 37.Bg2 Ke6 38.Kc5 Bc4 39.e4 (39.e4 Ke7 40.ed5+–) 1–0. Algaba,Pedro – Zimmer,Georg, corr SOK–90–66, 1990.

5.Nf3 Nc6 6.b5 Na5 7.d3 0–0 8.Qd2 b6 9.Ne5+/– Rb8 10.Nf3 c5 11.0–0 d5 12.Be5 Bd7 13.Bb8+– Qb8 14.a4 d4 15.e3 de3 16.fe3 Be6 17.Ng5 Bd7 18.Nc3 h6 19.Nge4 Ne4 20.Be4 Be6 21.Nd5 Bd6 22.Nf4 Bd7 23.Qc3 Be5 24.d4 cd4 25.ed4 Rc8 26.Qd3 Bf6 27.Nd5 Bd8 28.Bh7 Kh8 29.Rf7 Be6 30.Rf8 (30.Rf8 Bg8 31.Rg8#) 1–0. pierre – oppore, internet live, 2010.

5.Nf3 e4 6.Ng5 d5 7.0–0 h6–/+ 8.Nh3 Bb4 9.Nf4 0–0 10.d3 Bf5 11.a3 Bc5 12.Nd2 Nbd7 13.c4 c6 14.cd5 cd5 15.Nb3 Bb6 16.Nd5 Nd5 17.de4 Ne3 18.fe3 Be3 19.Kh1 Be6 20.Nd4 Nc5 21.Nf5 Bf5 22.ef5 Qg5 23.Qc2 Rac8 24.f6 Rfe8 25.Bh3 Ne6 26.Qe4 g6 27.Qb7 Rb8 28.Qc6 Qh5 29.Bg2 Rec8 30.Qe4 Rb2 31.Qe3 Re2 32.Qf3 Qe5 33.Qd5 Qb2 34.a4 Rd8 35.Rab1 Qc2 36.Qb7 Qa4 37.Ra1 Ra2 38.Ra2 Qa2 39.h3 a5 40.Kh2 Rd2 41.Rc1 Nd4 42.g4 Rf2 43.Kh1 Kh7 44.Qd5 Qd5 45.Bd5 Rf6 46.Rc7 Nb5 47.Rb7 Nc3 48.Bf7 Kh8 49.Rc7 a4 50.Bg6 a3 51.Rc3 Rf1 52.Kg2 a2 53.Ra3 a1R 54.Ra1 Ra1 55.Bh5 Kg7 56.h4 Ra2 57.Kg3 Ra3 58.Kg2 Kf6 59.Kf2 Rh3 60.g5 hg5 61.hg5 Kg5 62.Bd1 Kf4 63.Ke2 Ke4 64.Bc2 Kd4 65.Bf5 Rh2 (65...Re3 66.Kf2=+) ˝–˝. pierred – oldsage, ChessWorld.net, 2006.

5.Nf3 e4 6.Ng5 d5 7.b5 –/+.

5.Nf3 Be6 6.0–0 h6 7.d3 Qd7 8.Re1 (8.Ne5 de5 9.Bb7 Bd5 10.Ba8 Ba8=) 8...Nc6 9.b5 Nd8 10.c4 Bh3 11.Bh1 h5 12.e4 Ng4 13.Nc3 h4 14.Nd5 hg3 15.fg3 Ne6 16.Ne7 Qe7 17.Qd2 0–0–0 18.a4 Rh7 19.a5 Rdh8 20.Re2 Nc5 21.Rd1 b6 22.Qc2 Ne6 23.Qd2 Qf6 24.d4 ed4 25.ab6 ab6 26.Nd4 Nd4 27.Bd4 Ne5 28.Rf2 Qe7 29.Ra1 f6 (29...Nc4 30.Qc3 Be6 31.Bg7 Rg7 32.Qg7+–) 30.c5 (30.Ra7!? Kd8 31.Qc3=) 30...dc5+= 31.Qa2?? (better is 31.Bc3 Qe6 32.Qd5 Qd5 33.ed5–/+) 31...cd4–+ 32.Qd5 Qd6 0–1. Michalek,Christoph (2185) – Buchholz,Peter, Ruhrgebiet VL2–chT, 1995. (=1.Nf3 d6 2.b4 e5 3.Bb2 Nf6 4.g3 Be7 5.Bg2)

5.a3 0–0

6.c4 c6 7.Nf3 Be6 8.d3 Nbd7 9.0–0 h6 (9...a5 10.Ng5+=) 10.Nbd2= a5 (10...Qb6 11.Qc2=) 11.Qc2 ab4 (11...Re8 12.Bc3=) 12.ab4 Qb6 13.Bc3 Rfb8 (13...d5 A) 14.Be5? Ne5 (14...Bb4?! 15.cd5 Bd5 16.Nc4 Bc4 17.Qc4=; worse is 14...Qb4 15.Rab1 Qc5 16.Rb7+/–) 15.Ne5 Ra1 16.Ra1 Qd4–+ (16...Qb4 17.d4+=; 16...Bb4?! 17.Qb2=); B) 14.Ne5 Ne5 15.Be5=) 14.d4 Qc7 15.de5 de5 16.Qb2 e4 (16...Ra1!? 17.Ra1 Rd8+=) 17.Nd4+= Ra1 18.Ra1 e3 19.Ne6 (19.fe3 Bg4+=) 19...ef2 20.Kf2 fe6 21.Bh3 e5 22.Kg2 b5 (22...c5 23.Be6 Kh8 24.b5+=) 23.Be6 Kh8 (23...Kh7 24.c5 Rf8 25.e4+/–) 24.Nf3+/– bc4 25.Ne5 Ne5 26.Be5 c3 (26...Bd6!? 27.Bf6 gf6+/–) 27.Qc3+– (27.Bc7? cb2 28.Rb1 Rb4–+; 27.Bc3?! Qb7 28.Kh3 Qb6+/–) 27...Bb4 (27...Bd6 28.Bf6 gf6 29.Qf6 Qg7 30.Qg7 Kg7 31.Bd7+–) 28.Qe3 (worse is 28.Bc7 Bc3 29.Ra6 Rb2+/–) 28...Qb6?? (28...Qd8+–) 29.Qb6 (29.Qb6 Rb6 30.Ra8 Kh7 31.Bf5 g6 32.Ra7 (32.Bf6?! gf5 33.Bd4 c5 34.Rh8 Kg6+=) 32...Kg8 33.Be6 (33.Bf6?! gf5 34.Be5 Bf8=) 33...Kf8 34.Bf6+–) 1–0. Woelfelschneider,Peter – Angermann, email, 1997.

6.c4 Nc6 7.Nf3 +=.

6.c4 Re8 7.Nc3 c6 8.d4 ed4 (8...a5 9.b5+=) 9.Qd4= Be6 10.Nf3 Qb6 11.b5 Nbd7 12.0–0 a6 13.bc6 bc6 (13...Qb2 14.cd7 Nd7 15.Rfb1+=) 14.Rab1 Qc7 (14...Rab8 15.Rfd1=) 15.Ng5 Bf5 16.e4 Bg6 17.Nh3 Nf8 (17...Qb6 18.Rfd1=) 18.f4 (18.Nf4 Ne6 19.Ne6 fe6=) 18...Bh5 (18...Ne6 19.Qd2 Nc5 20.f5=) 19.f5 (19.Ng5 h6 20.Nf3 Ne6=) 19...N8d7 20.Nf4 d5 (20...Ne5 21.h3 Rab8 22.g4 (worse is 22.Nh5 Nh5 23.Ne2 Bf6–/+) 22...Bg4 23.hg4 Nfg4 24.Nh5+/–) 21.Kh1 (21.Na4 de4 22.Nh5 Nh5 23.Be4 Rad8+=) 21...Bc5= 22.Qd2 dc4 23.Na4 Bf8 (23...Ba7 24.Nh5 Nh5 25.Qe2=) 24.Nb6 (24.Qc2 Bd6=) 24...Rad8 (better is 24...Nb6!? 25.Bf6 Bg4+= (worse is 25...gf6 26.Nh5 Red8 27.Nf6 Kh8 28.Qg5+/–)) 25.Nd7+= Rd7 26.Qc2 Re5 27.Be5+– Qe5 28.Qc4 c5 29.Qa6 Rd2 30.Qa8 Be2 31.Ne2 Re2 32.Rb8 Nd7 33.Rd8 Rd2 34.Qb7 Qe7 35.Qc7 Qd6 36.Qd6 Rd6 37.a4 f6 38.a5 (38.a5 c4 39.a6 Ra6 40.Rd7+–) 1–0. Schulz,Hans_Juergen – Zimmermann,Joerg, TT–04.49 TSC, 2002.

6.c4 Re8 7.Nc3 Nc6 8.Nf3 Bf5 (8...Be6 9.d3+=) 9.Nd5 (9.0–0 Be6=) 9...e4 (9...Nd5 10.cd5 Nb8 11.0–0=) 10.Nd4 Nd4 11.Bd4 (11.Ne7 Qe7 12.Bd4 c5=) 11...c6 (11...Nd5 12.cd5 Bf6 13.Bf6 Qf6 14.Rc1+=) 12.Ne3 (12.Ne7 Qe7 13.0–0 Qe6=) 12...Bg6 13.Qb3 Qd7 (13...d5 14.0–0=) 14.0–0 h5 (14...d5 15.cd5 Nd5 16.Nd5 Qd5 17.Qc3=) 15.Qb2 (15.Rfd1 Qe6+=) 15...Bf8 (15...d5 16.cd5 cd5 17.Rac1=) 16.Bf6+= gf6 17.f4 (17.Qc3 f5 18.Rad1 Bg7=) 17...ef3 (17...f5 18.Qc2=) 18.Rf3 (18.Bf3 Bh6 19.Ng2+/– (19.Qf6?! Bg7 20.Qf4 Be5=)) 18...d5 (better is 18...Bh6!?+=) 19.cd5+– cd5 20.Qd4 (20.Rf2 Be4+–) 20...Rad8 (20...Re4 21.Qd5 (21.Qf6? Bg7–+) 21...Qd5 22.Nd5 Re2 23.Rf2 Rf2 24.Kf2+/–) 21.Raf1 (21.Rf2 Be4+–) 21...Re5 (21...Bh6 22.Qf6 (worse is 22.Qa7 d4 23.Nf5 Bd2+=) 22...Bg7 23.Qf4+/–) 22.Qa7 (better is 22.Rf6!? Qe8 23.Bd5+– (worse is 23.Qa7 Bg7+–; 23.Nd5?! Bg7+/–)) 22...d4+/– 23.Nf5?? (23.Nd1 Re2 24.R3f2 Re7+=) 23...Re2?? (better is 23...Bf5 24.R3f2 b5–+) 24.Bh3+/– Qd5 25.d3 Qa2 26.R3f2 Rf2 27.Rf2 Qb1 28.Bf1 Rd5 29.Nd4 Bd3 30.Nf3 b5 31.Qe3 Bf1 32.Rf1+/– Qd3 33.Qc1 Rf5 34.Kg2 Qe4 35.Qb1 Qd5 36.h4 Bh6 37.Qd1 Qc6 38.Rf2 Rd5 Black gets deadly initiative 39.Rc2 Qd7 40.Qe2 Kg7 41.Rc5 Rc5= 42.bc5 Qc6 43.Qf2 Bc1+= 44.a4? ba4–+ 45.Qc2 Be3 (45...Be3 46.Qe2 Bc5–+) 0–1. Zuccotti,Eduardo – Juarez,Alberto (2265), Grand Prix II Buenos Aires, 1992.

6.c4 Re8 7.Nh3 c6 +=.

6.d3 c6 7.Nf3 Be6 8.0–0 Qd7 9.Re1 Na6 10.c4 Bh3 11.Bh1 e4 (11...Rfe8 12.e4=) 12.de4 Ne4 13.Nbd2 f5 14.Qc2 Nd2 15.Qd2 Nc7 16.a4 f4 17.b5 c5 18.Red1 Rad8 19.a5 b6 (19...Qe6!?=) 20.ab6 ab6 21.Ra7 Rc8 22.Rb7 Qe6 (22...fg3 23.hg3 Qg4 24.Qd3+/–) 23.Ng5 Qf5? (better is 23...Bg5 24.Rc7 Rc7=) 24.Nh3+– Qh3 25.Bg2 Qf5 26.Qd3 fg3 27.Qf5 gh2 (27...Rf5?? 28.hg3 Rh5 29.Bc6+–) 28.Kh1 Rf5 29.Bh3 (29.Rb6?! Rf2 30.Rc6 Re2+=; 29.Kh2 Rf2 30.Rd2 Bg5–/+) 29...Rff8 30.Bc8 Rc8 31.Rb6 Ne6 32.Rb7 Kf8 33.Ra1 1–0. Rychlik,Hanna (2060) – Gluszko,Monika (1805), Poland–ch sf (Women), 2007.

6.d3 Nc6 7.c4 Nd4 8.e3 Ne6 9.Ne2 c5 10.0–0 Ne8 11.bc5 Nc5 12.d4 ed4 13.ed4 (worse is 13.Qd4 Bf6 14.Qd2 Nb3 15.Bf6 Qf6–/+; 13.Bd4?! Nf6+=; 13.Nd4?! Be6 14.Nd2 Bf6=) 13...Ne6 14.Nbc3 f5 15.Nd5 N6c7 16.Nef4 g5 17.Ne7 Qe7 18.Re1 Qd8 19.Nd5 1–0. Massoni,Michael (2175) – Luciani,Thibault (1775), Aveugle rap blindfold 3th rapid, 2008.

6.Nf3 a6 7.c4 Nc6 8.Qc2 Rb8 9.0–0 Bg4 10.Nc3 Bf3 11.Bf3 Nd4 12.Qd3 Nf3 13.Qf3 h6 14.Rad1 Nh7 15.h4 f5 16.d3 f4 17.Qg2 Rf6 (17...c6 18.Qh3=) 18.Nd5+= Rg6 19.Qe4 Kf7?? (better is 19...Nf8 20.e3 fe3=) 20.Ne7 (20.h5!? Rg5 21.Qh7 c6 22.Ne7 Ke7+–) 20...Qe7 21.Kh2?? (better is 21.h5 Rg4 22.Qh7+–) 21...Nf6= 22.Qf5 Qe6 23.Qe6 Ke6 24.gf4 ef4 25.f3 Nh5 26.Bc1 Re8 27.Rf2 Kf7 28.Rg1 Rge6 29.Rgg2 Re5 30.Kh3 g5 31.Bb2 Rf5 32.Kg4 Kg6+= 33.hg5? hg5?? 34.Rf1 Ng3 Attacking the backward pawn on e2 35.Re1 Rf7 36.e4?? Rh7 37.Rg3 Rh4# (37...fg3?! 38.Kg3 Rf8 39.c5+=) 0–1. Hafijtullin,Gazimbek (1760) – Klyuev,Pavel, Dimitrovgrad RUS, Summer Open, 2013.

6.Nf3 c6 7.0–0 Bg4 (7...Be6 8.d4 e4 9.Ng5+=) 8.d3 (8.h3 Be6=) 8...Qd7 9.e4 (9.c4 Qe6=) 9...a5 (9...Qe6 10.Ng5 Qd7 11.Nf3=) 10.Nbd2 (10.d4 Ne4 11.Qd3 Bf3 12.Bf3 Ng5+=) 10...Qc7 (10...ab4 11.ab4 Na6 12.c3+=) 11.Nc4 (11.d4 d5 12.ed5 e4 (12...Nd5?! 13.c4 Nb6 14.ba5 Ra5 15.de5+=) 13.dc6 Nc6–+ (13...Bf3?! 14.Nf3 ef3 15.cb7=; worse is 13...ef3 14.cb7 Ra7 15.Bf3 Bf3 16.Qf3–/+)) 11...ab4 12.ab4 Ra1 13.Qa1 Na6 14.Qa4 Be6 (14...Ra8 15.b5 cb5 16.Qb5=) 15.Ne3 (15.Ng5 Bc4 16.dc4 Qb6+=) 15...Ng4 (15...Ra8!?–/+) 16.Ng4= Bg4 17.Ra1 f5 18.Qb3 Kh8 19.Ra4 (19.ef5 Bf5 20.Nd2 d5+=) 19...fe4 20.de4 Qc8 21.c4 Qe6 22.Ra3 (22.Qd3 Qf6 23.b5 Nc5–+ (23...Bf3?! 24.Qf3 Qf3 25.Bf3 Rf3 26.ba6 ba6 27.Ra6+=)) 22...Kg8 23.Nd2 (23.Qc3 Qf6+=) 23...Bg5= 24.Nf3 Bf3 (24...Bf6 25.Qc3=) 25.Bf3 Bd2 26.b5 Nc5 27.Qc2 Bb4 28.Re3 Ra8 29.Bc1 Nd7 30.Be2 Bc5 31.Rf3 Bd4 32.Rf5 Nc5+= 33.Kg2 h6 34.bc6 bc6+= 35.Bd2 Ra4 36.Be1 Qe8 37.Bc3 Bc3–/+ 38.Qc3 Ra8 39.Qe3 Qe6 40.Bf1 Rb8 41.Qe1 Nb3 42.Rf3 Nd4 43.Rc3 c5 44.Bd3 Rf8 45.Ra3+= Qg6 46.Qe3 h5 47.h3 h4 48.g4 Rf4 49.Ra1 Kh7 50.Ra3 Rf3 51.Qd2 d5 52.Rc3 dc4 53.Rc4+= Qf6 The backward pawn on f2 becomes a target 54.Bf1 Ne6 55.Rc3 Ng5–/+ 56.Re3 Qf4 57.Qe2 Re3 58.Qe3 Qe3 59.fe3 g6 60.Bd3 Kg7 61.Bb1 Ne4?? 62.Be4+– (62.Be4 c4 63.Kf3+–) 1–0. Hohlstein,Walter (1790) – Ritter,Fredi, TT–05 TSC, 2003.

6.Nf3 e4 7.Nd4 +=.

5.c4 0–0

6.Nc3 Nc6 7.a3 Bd7 8.d3 Rb8 9.e4 Nd4 10.Nge2 c5 11.Nd4 ed4=+ 12.Nd5 Nd5 13.ed5 Bf6 14.0–0 b6 15.b5 Bf5 16.Qd2 Re8 17.a4 Qd7 18.a5 Bh3 19.ab6= ab6 20.Ra6 Bg2 21.Kg2 Qb7 22.Rfa1+= Ra8 23.Bc1 Ra6 24.Ra6 Ra8 25.Qa2 Ra6 26.Qa6 Qc7 27.Bf4 g5? 28.Qa8+– Kg7 29.Qc6 Bd8?? 30.Bd6+– Qc6 31.dc6 Kf6 32.c7 Bc7 33.Bc7 Ke6 34.Bb6 Kd6 35.Kf3 f5 36.Bd8 h6 37.h4 (37.h4 Kd7 38.Bg5+–) 1–0. thotares (1815) – rubimar, internet, 2007.

6.Nc3 Nbd7 7.Nf3 Nb6 8.d3 Be6 9.Ng5 h6 10.Ne6+/– fe6 11.0–0 d5 12.c5+= Nc8 13.d4 e4 14.Qa4 c6 15.f3 Qc7 16.fe4+– de4 17.Qb3 Qd7 18.Ne4 Ne4 19.Rf8 Bf8 20.Be4 Ne7 21.Rf1 Kh8 22.Qf3 Qe8 23.Bd3 Nd5 24.Qe4 g6 25.Qg6 Qg6 26.Bg6 Bg7 27.Rf7 Nb4 28.Rb7 Na2 29.Bb1 1–0. zsvr – fvmk, internet, 2009.

6.d3 a5 7.b5 =+.

6.d3 c6 7.Nc3 Na6 8.a3 Nc7 9.Nf3 Bg4 10.0–0 Qd7 11.c5 Bf3 12.Bf3 dc5 13.b5 (13.Na4!?=) 13...cb5–/+ 14.Bb7 Rab8 15.Bg2 Rfd8 16.Qc2 Ne6 17.Ne4 Ne4 18.Be4 Nd4 19.Qd1 f5 20.Bg2 c4 21.e3 Nb3 22.dc4 Na1 23.Bd5 Kh8 24.Be5?? (better is 24.Qa1 bc4 25.Bc4–+) 24...bc4 25.Bb8 Rb8 (better is 25...Nb3 26.Bf3 Qb5–+) 26.Bc4 Qd1 27.Rd1 Nc2 28.a4 g6 29.Rd7 Bc5 30.Rc7 Bb6 31.Re7 Na3 32.Be6 Nb1 33.h4 Nd2 34.h5 Ne4 35.g4 fg4 (35...Bc5 36.Rc7 Rb1 37.Kg2–+) 36.Bg4? (better is 36.hg6 hg6 37.Bg4–+) 36...Nf6–+ 37.Bf3 Nh5 38.Bh5 gh5 ˝–˝. Macedo,A Soares De (2050) – Camara,J Arruda (1975), 3rd Aberto Xadrez Potiguar, 2008.

6.d3 c6 7.Nd2 Na6 (7...Nbd7 8.Ngf3+=) 8.a3= Nc7 9.Ngf3 Ne6 (9...Re8 10.0–0=) 10.0–0 Bd7 (10...Qb6 11.Qc2=) 11.Nb3 (11.Qc2 Qb6=) 11...Qc7 12.Qc2 Rac8 (12...Rfd8 13.Rfc1=) 13.Rfc1 Qb8 14.c5 Ne8 (14...Rcd8 15.d4 ed4 16.Nfd4 Nd4 17.Bd4=) 15.cd6+= Bd6 16.Nc5 Nc5 (16...Nf6 17.Nd7 Nd7 18.Bh3+=) 17.bc5 Bc7 18.Bc3 Nf6 19.e4 (19.d4 Ng4+=) 19...Rfe8 20.Rab1 (20.d4 ed4 21.Nd4 Rcd8=) 20...Rcd8= 21.a4 (21.Rd1 b5=) 21...Nh5 (21...Bg4 22.h3 Bf3 23.Bf3=) 22.a5+= Re7 (22...Bc8 23.a6+=) 23.Rb2 (23.a6 b5 24.cb6 ab6+/–) 23...Bc8 (23...Qa8 24.Rcb1 Bc8 25.d4 ed4 26.Nd4+/–) 24.Rcb1 (24.a6!? b6 25.cb6 ab6 26.Ra1+=) 24...Qa8 25.Nd2 Rf8 (25...Nf6 26.Nc4+=) 26.Bf3 Nf6+= 27.Nc4 Ne8 28.Qd2 f6 29.Qd1 g6 30.d4 ed4 31.Qd4 Be5 32.Qe3 Bc3 33.Qc3 White gets strong initiative 33...Be6 34.a6+– Rff7 35.Nd6 Nd6 36.cd6 Rd7 37.ab7 Qb8 38.Qc6 Rf8 39.Rd1 Rfd8 40.Be2 Rd6 41.Rd6 (41.Rd6 Rd6 42.Qd6 Qd6 43.b8Q Qb8 44.Rb8 Kg7 45.Rb7 Kh6 46.Ra7+–) 1–0. Struck,Bernd Dieter – Fehres,Werner, GER–ch Seniors, 2001.

6.d3 c6 7.Nf3 Qb6 =+.

6.d4 ed4 7.Bd4 Nbd7 8.Nc3 c5 9.bc5 dc5 10.Be3 Qa5 (10...Qa5 11.Bd2 Ne5=+). wlittle (2000) – eesterbauer (1875), net–chess.com, 2002.

6.d4 ed4 7.Bd4 Nbd7 8.Nf3 Nb6 9.Qc2 Be6 10.Nbd2 c5= 11.bc5 dc5 12.Bb2 Qc7 13.0–0 Nc4?? 14.Nc4+– b5 15.Ncd2 Rab8 16.Rac1 Rfc8 17.Be5 Bd6 18.Bd6 Qd6 19.Ne4 Ne4+/– 20.Qe4 Ba2 21.Ra1 Bd5 22.Qc2 Ra8?? 23.Rfb1 a6 24.e4 Bc4 25.Rd1 Qb6 26.Nd2 Be6 27.e5+– Rab8 28.Ne4 a5 29.Nd6 Rc7+/– 30.Rdb1 b4 31.Nc4 Bc4+= 32.Qc4 Ra7 33.Ra4 Rd8 34.Rc1 Rc7 35.Qa2 Ra7 36.Ra1 b3 37.Qb2 Rc8? 38.Bd5+– h6 39.Qb3 Qb3 40.Bb3 Kf8 41.Ra5 Ra5 42.Ra5 Rc7 43.Bc4 Ke7 44.f4 f6 45.ef6 Kf6 46.Kf2 Kf5 47.Kf3 g5 48.Bd3 Kf6 49.Ra6 Kg7 50.f5 h5 51.Rg6 Kf7 52.Rg5 c4 53.Bc2 c3 54.Rh5 Kf6 55.g4 Rb7 56.Ke3 Rd7 57.g5 Ke5 58.f6 Rd2 59.Bd3 Rg2 60.f7 (60.f7 c2 61.Bc2 Rc2 62.g6 Ke6 63.f8Q Rc7 64.Qe8 Kd6 65.Qe5 Kc6 66.Qe6 Kb7 67.Rb5 Ka8 68.Qg8 Ka7 69.Qa2#) 1–0. petery (1730) – Kadonas (1645), internet, 2007.

6.d4 ed4 7.Bd4 Re8 8.Nc3 Nc6 9.Nf3 Nb4 10.a3 Nc6 11.0–0 Rb8 12.Qd3 Nd4 13.Nd4 Bf8 14.Rab1 c6?? 15.Nc6!+– bc6 16.Rb8 Qc7 17.Rb2 Ba6 18.Qd4 c5 19.Qd3 Qa5 20.Bc6 Rc8 21.Bf3 g6 22.Rfb1 Bg7 23.Nb5 Ne8 24.Na7 Ra8 25.Ba8 (25.Ba8 Bb2 26.Rb2+–) 1–0. mrkt – guest, internet, 2009.

6.d4 e4 7.Nc3 d5 8.a3 c6 9.cd5 cd5 10.Rc1 b6 11.Nh3= Bh3 12.Bh3 a5 13.Qa4 Nbd7 14.b5 Rc8 15.Qb3+= Rc4 16.Nd5!+/– Rc1 17.Bc1 Nd5 18.Qd5 Nf6 19.Qc4 Ba3?? 20.Ba3+– Re8 21.0–0 e3 22.Bg2 ef2 23.Rf2 Ng4 24.Qf7 Kh8 25.Bf8 Qd4 26.Bg7! Qg7 27.Qe8 Qg8 28.Rf8 Nh6 29.Qe5# 1–0. eszx – hoyx, internet, 2009.

6.e3 c6 7.Qb3 (7.Nc3 Be6–/+) 7...Be6 (7...a5 8.Nf3–/+) 8.a4 (8.Nf3!?–/+) 8...d5 (8...a5 9.b5 Nbd7 10.Qc2 cb5 11.ab5–/+) 9.Be5 (9.Na3!? Nbd7 10.Nf3–/+) 9...dc4–+ 10.Qb2 Nbd7 (10...Na6!? 11.Bc3–+) 11.Nf3–/+ Ne5 12.Ne5 Nd5 13.b5 Bf6 (13...Qc7 14.Nf3 a6 15.bc6 bc6–/+ (15...Qc6?! 16.Nd4 Qc5 17.Nc3=)) 14.0–0? (better is 14.f4–/+) 14...c3!–+ 15.Nc3 (15.Nc3 Be5 Decoy (15...Be5 Interception); 15.dc3 Be5 Decoy (15...Be5 Interception)) 15...Be5 16.d4 Bf6 17.Ne4 Be7 18.Rfd1 (18.Rfc1 Rb8–+) 18...Qb6 19.Rac1 (19.Nc5 Bc5 20.dc5 Qc5 21.bc6 bc6–+ (21...Qc6?! 22.Qd2–/+)) 19...Rfd8 20.Nc5 Bc5 (20...a6 21.Bd5 Rd5 22.e4–+) 21.dc5 (21.Rc5 a6 22.a5 Qc7 23.bc6 bc6–+) 21...Qc7 22.Rd4 Ne7 23.Rh4 (23.Rcd1 g6–+) 23...Nf5 (23...h6 24.Bf3–+) 24.Rf4 (24.Rb4 Rd7–+) 24...g6 25.g4 (25.Rb4 Rd7–+) 25...Ne7 26.g5 Nf5 27.h4 Ng7 (27...Rd7 28.h5 gh5 29.Bf3–+) 28.Bf3 Bf5 29.h5 (29.Rb4 Rab8–+) 29...Ne6 30.h6 (30.hg6 fg6 31.Qa2 Qf7–+) 30...Qe7 31.Rfc4 (31.Rf5 gf5 32.Kh1 Rac8 (32...Qg5? 33.Rg1 Qg6 34.Qf6+–) 33.bc6 bc6–+) 31...Qg5 32.Rg4 (32.Bg2–+) 32...Bg4 33.Bg4 Qh6 (33...Qh6 34.Qf6 Rd5 35.Be6 Qg5 36.Qg5 Rg5 37.Kf1 fe6–+) 0–1. Hadjiyiannis,C (2005) – Theocharous,Stelios (1860), ch–CYP Closed, 2015.

6.Nf3 a5 7.a3 ab4 8.ab4 Ra1 9.Ba1 Be6 10.Qc2 Qd7 11.0–0 Bf5 12.Qb3 Bh3 13.Nc3 Bg2 14.Kg2 Nc6 15.Nd5 Nd5 16.cd5 Na7 17.e4 f5 18.Ne5 de5 19.d6 Kh8 20.de7 Qe7 21.Qd5 Qb4 22.ef5 Nc6 23.Re1 Qd6 24.Qe4 Qd2 25.Be5 Ne5 26.Qe5 Qd7 27.Qc5 Rf7 28.Re6 h6 29.Qe5 Kg8 30.g4 c6 31.Re8 Rf8 32.Re7 Qd5 33.Qd5 cd5 34.Rb7 Rd8 35.Kf3 d4 36.Ke2 d3 37.Kd2 h5 38.h3 Rd4 39.f3 hg4 40.hg4 Kf8 41.Rb3 Kf7 42.Rd3 Ra4 43.Ke3 Ke7 44.Rd4 Ra3 45.Kf4 Ra7 46.Kg5 Kf7 47.Rd6 Rb7 48.Ra6 Rc7 49.f4 Rb7 50.Kh5 Rc7 51.g5 Rb7 52.g6 Ke7 53.f6 gf6 54.Kh6 Rb1 55.Ra7 Ke6 56.g7 Rh1 57.Kg6 Rg1 58.Kh7 Rh1 59.Kg8 Rb1 60.f5! Kf5 61.Kf7 Rb8 62.Ra5 Kg4 63.Kf6 Rb6 64.Kf7 Rb7 65.Kg6 (65…Rb6 66.Kh7+–) 1–0. Kovar,V – Tichonov,J, CZE League, 1999.

6.Nf3 a6 7.Nc3 Be6 8.Ng5 Bc4 9.Bb7 Ra7 10.Bg2 h6 11.Nge4 Ne4 12.Ne4 Bd5 13.0–0 c6 14.f3 Nd7 15.Nc3 Be6 16.e4 Qb6–/+ 17.Kh1 Qb4 18.Rb1 d5 19.d3 Rb8 20.Ba1 Qd6 21.Rb8=+ Qb8 22.Qb3?? Qb3–+ 23.ab3 d4 24.Ne2 Bb3 25.f4 Bc2 26.fe5 Ne5 27.Bd4–/+ Rb7 28.Be5+= Bd3 29.Re1?? Bb4 30.Bc3 Be2–+ 31.Bb4 Rb4 32.Re2 a5?? 33.e5?? a4?? 34.Bc6+– a3 35.Ra2 Rb3 36.Bd5 Rd3 37.Bc4 Re3? 38.e6?? fe6+= 39.Kg2 Kf8 40.Kf2+– Re5? 41.Ra3 Ke7 42.Ra6 Kf6 43.Kf3 g5 (44.h4 gh4 45.gh4 Rf5 46.Ke3 Re5 47.Kf4 Rf5 48.Kg4 Re5+–). egypt – mk1959, Live Game Caissa's Web, 2004.

6.Nf3 c6 7.0–0 Qb6 8.Qb3 e4 9.Nd4 d5 10.c5 Qc7 11.a3 Re8 12.Nc3 a5 13.Na4 Nbd7 14.Rfc1 Bf8 15.h3 ab4 16.ab4 (worse is 16.Qb4 Qa5 17.Nb6 Qb4 18.ab4 Ra1 19.Ba1 Nb6 20.cb6 Bb4–/+) 16...g6 17.Rcb1 Bh6 18.Qc3 Bg7 19.Qc1 Ne5 20.Nb6 Ra1 21.Ra1 Nfd7 22.Nc8 Qc8 23.Bc3 Nf6 24.Ra2 Nh5 25.Qa1 Nd7 26.Ra7 Be5 27.e3 Nhf6 28.Bf1 Bb8 29.Ra8 Ne5 30.b5 Nfd7 31.Qa3 Qd8 32.Be2 Qe7 33.bc6 bc6 34.Bb4 Nf8 35.Qa6 Qd7 36.Bc3 Rd8 37.Bg4 f5 (37...Ng4 38.Nc6 Nf2 39.Kf2+/– (39.Nd8?! Nh3 40.Kg2 Qg4 41.Rb8 Qf3 42.Kh2 Nf2=)) 38.Bd1 g5 (38...Nd3 39.Qb6 Nf2 40.Bb3 Nh3 41.Kg2+/–) 39.Ba4+/– Rc8 40.Kf1 (40.Qb6 Bc7 41.Qb7 Ra8 42.Qa8 g4+/–) 40...f4+= 41.g4 (41.g4 Nfg6 42.Nf5+/–; 41.ef4 Qh3 42.Ke2 gf4 43.Nc6 Qh5 44.g4 Qg4 45.Kf1 Qh3 46.Ke2 Qh5 47.Ke1 Nd3 48.Qd3 ed3 49.Ne7 Kf7 50.Be8 Re8 51.f3 Qf3 52.Rb8 Qe2; 41.gf4 Qh3 42.Ke2 Nd3 43.Qc8 Qc8 44.Bc6 Qg4 (44...gf4?? 45.Bd5 Kg7 46.Nf5 Kg6 47.Ne7 Kg5 48.Nc8+–) 45.Kf1 A) 45...Nc5?! 46.Bd5 Kg7 47.Ne6 Kh6 48.Nc5 (48.Nf8 Qh3 49.Kg1 gf4 50.Bg7 Kg7 51.Rb8 f3 52.Rb7 Nb7 53.Ne6 Kh6–+; 48.fg5 Kh5 49.Nc5 Qd1 50.Kg2 Ng6+=) 48...gf4 49.Be4= (49.Rb8 Qh3 50.Kg1 f3 51.Bg7 Kh5 52.Bf7 Kg4 53.Bh5 Kh5 54.Bf8 Qg2); B) 45...Qd1 46.Kg2 Ne1 47.Kh2 Qh5 48.Kg1 gf4 49.Rb8 Nf3 50.Nf3 ef3–+) 1–0. Degterev,Pavel (2345) – Bachmann,Wolfgang (2440), Yury Sakharov Memorial B, 2006.

6.Nf3 c6 7.0–0 Nfd7 8.Qc2 f5 9.Nc3 f4 10.d4 fg3 11.hg3 ed4 12.Nd4 Bf6 13.Ne6 Qe7 14.Nf8 Qf8 15.Ne4 Nb6 16.Nf6 gf6 17.c5 dc5 18.bc5 Nd5 19.e4 Ne7 20.Rfd1 Be6 21.Rd6 Bg4 22.Rf6 Qg7 23.Qb3 1–0. usingprogram (2010) – njegomir, internet, 2013.

6.Nf3 c6 7.0–0 Bg4 8.Nc3= Nbd7 9.Qb3 Be6 10.Ng5 b5?? 11.Ne6+– fe6 12.cb5 d5 13.bc6 Nb6 14.d3 Rc8 15.b5 a6 16.Bh3 Kf7 17.a4 d4? 18.Qe6 Ke8 19.a5 dc3 20.ab6 cb2 21.Ra2 Ra8 22.c7 Qd7 23.b7 Qe6 24.ba8Q Kf7 25.Be6 Ke6 26.Qf8! Bf8 27.c8Q Kd5 28.Qc6 Kd4 29.Qc4 1–0. pcmvr (2530) – petemarkou (2175), net–chess.com, 2006.

6.Nf3 Nc6 7.a3 a6 8.d3 Ng4 9.0–0 f5 10.b5 Nb8 11.a4 Be6 12.h3 Nh6 13.Nbd2 Nd7 14.Ne1 Qc8 15.Kh2 c6 16.bc6= bc6 17.Nc2 Rb8=+ 18.Ba3 c5 19.Rb1 f4 20.Ne4 Nf6 21.Ng5? Nfg4!–+ 22.hg4 Bg5 23.f3 fg3 24.Kg3 Bf4 25.Kf2 Qd8 26.Rh1 Ng4! 27.fg4 Bh2 28.Ke1 Qa5 29.Bb4 Bg3 30.Kd2 cb4 31.Rb3 Qa4 32.Ne3 Bf4 33.Bf3 Qa2 (33...Qa2 34.Qc2 Be3 35.Kd1 Qc2 36.Kc2 Bd4–+) 0–1. touchdown – oldsage, ChessWorld.net, 2006.

6.Nf3 e4 7.Ng5 d5 8.cd5 Bf5 9.Nc3 Bb4 10.Nge4 Ne4 11.Ne4 Re8 12.Nc3 Bd3 13.Qb3 Na6 14.0–0 Be2 15.Ne2 Re2 16.a3 Bd6 17.Qb7 Nc5 18.Qb4 Qg5 19.Bd4+/– Nd7 20.Qb5 Re7 21.Qc6 Rae8 22.f4 Qh6 23.Ba7 Nf6 24.a4 Ng4 25.h3 Nf6 26.a5 Ne4 27.Rfe1 f5 28.a6 Qg6 29.Re3 Ng3 30.Re7 Re7 31.Be3 Qf6 32.Rb1 Ne2 33.Kh1 Kf7 34.a7 (34.a7 Re8 35.Qe8 Ke8 36.a8Q Kf7 37.Qa4+–) 1–0. Uecker,Dieter (2320) – Berger,Gerhard (1815), BdF, 2007.

6.Nf3 Re8 =+.

6.Nc3 c6

7.b5 Be6 8.Qa4 –/+.

7.b5 Be6 8.bc6 bc6 9.Qa4 Nbd7 10.d3 d5–/+ 11.Nf3 dc4 12.Ng5 cd3 13.Ne6=+ d2 14.Kd2 fe6–/+ 15.Ke1 Rb8 16.Nd1 Bc5 17.Bc3 Nd5–/+ 18.Bd2 Qf6 19.Rf1 Rfc8 20.Rc1 Qe7 21.Bh3 Nf8 22.Ne3 Bb4 23.Bb4 Rb4 24.Qc2 Rc7 25.Nc4 Nd7 26.Nd2 Rb8 27.Nb3 c5 28.e4 N5f6 29.Qc4 Nf8 30.a3 Kh8 31.f4 ef4 32.Rf4 e5 33.Rf3 Rd8 34.Rfc3 h6 35.Qe2=+ c4 36.Nd2 Rd4 37.Rc4 Rcc4–/+ 38.Rc4 Qa3 39.Rd4 ed4 40.e5 Nd5 41.e6 d3–+ 42.Qf3 Qc1 43.Qd1 Qc5 44.Qf3 Qc1 45.Qd1–+ Qc6 46.Qb3–/+ Ne6 47.Qd3 Qc1 48.Kf2 Qc5 49.Kf1 Nd4 50.Kg2 a5 51.Kh1 a4 52.Qa6 a3 53.Bf1 Nf6?? 54.Qa8=+ Ng8 55.Bc4= Qc6 56.Qc6 Nc6 57.Nb1 Ne5 58.Ba2 Nf6 59.Na3 g5 60.Nc2 h5 61.Nd4 h4 62.gh4 gh4 63.Kg2 Kh7 64.Kh3 Ng6 65.Nf5 Kh8 66.Bb3 Kh7 67.Bc2 Kg8 68.Kg2 Kh8 69.Kf3 Kg8 70.Nd6 Kg7 71.Bf5 Kh6= 72.Nf7 Kg7 73.Nd8 Ne7 74.Ne6 Kh6 75.Bc2 Ng6 76.h3 Kh5 77.Ke3 Kh6 78.Kd4 Nh5 79.Ke4 Nhf4 80.Nf4 ˝–˝. Vokac,Marek (2490) – Hedke,Fred (2375), Komercni Banka op, 1999.

7.b5 Bf5 8.Nf3=+ Nbd7 9.0–0 Rb8 10.d4= e4 11.Nh4+/– Bg4 12.h3 Bh5 13.Qc2 d5= 14.g4 Bg6 15.g5 Nh5 16.cd5 Bg5? 17.Ng6+– fg6 18.dc6 bc6 19.bc6 Ndf6 20.Ne4 Ne4 21.c7 Qc8 22.Qc4 Kh8 23.cb8R Qb8 24.Be4 Qb2 25.Qc5 Rg8 26.Qg5 1–0. pierre – stulsf, internet, 2009.

7.e4 Na6 8.a3=+ Nc7 9.Nge2 Be6 10.d3 Qd7 11.0–0= Bh3 12.f4 Bg2 13.Kg2 Ng4 14.Bc1 f5 15.h3+= Nh6 16.fe5 de5 17.Bh6 gh6 18.ef5 Rf5 19.Rf5 Qf5 20.g4 Qg6= 21.Ng3 Ne6 22.Nf5 Bf8 23.Qf3 Rd8 24.Rd1 Qg5 25.Ne4+/– Qf4 26.Nf6 Kf7+= 27.Nh5 Qf3 28.Kf3 Ng5 29.Kg2 Kg8 30.Nfg3 a5 31.ba5+/– Ba3 32.h4 Ne6 33.Rb1 Nc5 34.Ne4 Ne4 35.de4 Rd2 36.Kf3 Rb2 37.Rd1 Rb3 38.Ke2 Be7 39.Rd7 Bh4 40.Rg7 Kf8 41.Rh7 Bg5 42.Rc7 Rb2 43.Kd3 Bd2 44.a6+= ba6 45.Rc6 a5 46.Rc7 Bg5+= 47.Ng7 Rb6 48.c5+/– Ra6 49.c6 a4 50.Ne6 Ke8 51.Rc8 Ke7+= 52.c7 Rd6 53.Ke2 Rd2= 54.Ke1 Rc2 55.Rg8 Kd7 56.Rd8 Ke6 57.c8Q Rc8 58.Rc8 a3 59.Kd1 Be7 60.Rc6 Bd6+= 61.Kc2 Kd7 62.Ra6 Bf8 63.Kb3 Ke8 64.Kc4 Kf7 65.Kd5 Bb4 66.Ke5 Bc3 67.Kf5 Bb2 68.Ra7 (68.Ra7 Ke8 69.e5+–; 68.Rh6?! a2 69.Ra6 a1R 70.Ra1 Ba1+/–) 1–0. Kiltti,Jyrki (2235) – Maeki,Urho, Tampere We TaSY op, 1996.

7.e4 Be6 8.Qe2 –/+.

7.Nf3 Be6 =+.

5.c4 c6

6.Nc3 0–0 7.e4 Be6 8.d3 a5 9.b5 Nbd7 10.Nf3 Nc5 11.a4 Nfd7 12.0–0 f5 13.Bh3 f4 14.Be6 Ne6 15.bc6 bc6 16.Rb1 Qe8 17.Ba3 Ndc5 18.Qe2 Qh5 19.Rb6 Rac8 20.Bc5 Nc5 21.Kg2 g5 22.h3 Qg6 23.Rfb1 h5 24.gf4 (24.Nh2 Ne6=) 24...ef4 (24...Ne6 25.Kh2 Nf4 26.Qf1–/+) 25.Kf1 (25.d4 Ne6 26.d5=) 25...g4 26.hg4 hg4 27.Ng1 f3 28.Qc2 g3?? (better is 28...Qh5!? 29.d4 Qh2 30.dc5–+) 29.fg3 (29.d4 Bh4 30.dc5 gf2 31.Qf2 Bf2 32.Kf2–+) 29...Qg3–+ 30.Qf2 Qf2 31.Kf2 Nd3 32.Kf1 Bf6 33.Nd1 Bd4 34.Rb7 Nc5 0–1. Fournier,Frederic (1810) – baslim (1795), rated blitz game (2/12), 2002.

6.Nc3 0–0 7.e4 Be6 8.Qe2 Nbd7 9.Nf3 h6 10.0–0 Re8 11.d4 Bg4 12.d5 cd5 13.cd5 Nb6 14.h3 Bd7 15.Nd2 Rc8 16.a4 a6 17.a5 Na8 18.Rfc1 Nh7 19.Nc4 Bg5? 20.Nd6+– Bc1 21.Rc1 Bb5? 22.Ncb5+– Rc1 23.Bc1 ab5 24.Qb5 Nc7 25.Qb6 Re7 26.Nb7 Qb8 27.Nc5 Qb6 28.ab6 Nb5 29.b7 Rb7 30.Nb7 1–0. zsvr – akmy, internet, 2009.

6.Nc3 Be6 7.d3 0–0 8.Nf3 h6 9.0–0= Nh7 10.b5 f5 11.Nd2 Nf6 12.e3 Qd7 13.a4 g5 14.f4+/– ef4 15.ef4 d5 16.fg5 hg5 17.cd5 Bc5 18.Kh1 Nd5 19.Qh5 Bd4 20.Qg5 Bg7 21.Rae1 Nf6 22.Nf3 Nh7 23.Qe3 Re8 24.Ne5 Qc7 25.d4 Nd7? 26.bc6 Ne5 27.cb7 Rad8 28.de5 Bc4 29.Rf5 (29.Rf5 Qb8 30.Nb5+–) 1–0. Zuccotti,Eduardo – Maller,Marcelo, Traffic op Buenos Aires, 1992.

6.d4 0–0 =+.

6.Nf3 0–0 7.0–0 h6 8.Nc3 Be6 9.d3 Nbd7 10.a4 Nh7 11.b5= Rb8 12.Ba3 c5 13.a5 b6 14.a6 f5 15.Bc1 e4 16.Nd2 Nhf6 17.de4+/– fe4 18.Nde4 Ne4 19.Ne4 Ne5 20.Bf4 g5 21.Be5+/– de5 22.Qc1 Qc7 23.Rd1 Bf5 24.Rd5 Rbd8 25.Nc3 Bf6 26.Ra2 Be6 27.Rd8 Rd8 28.Bd5 Qf7 29.e4 Rd6 30.Rd2+– g4 31.Qd1 Bg5? 32.Re2?? Kg7+/– 33.Kg2?? Qf3–+ 34.Kg1 Qc3 35.Rc2 Qb3 36.Qe2 h5 37.h4 Be7 38.Rb2 Qc3 39.Rc2 Qa1 40.Kg2 Bd5 41.cd5 Rf6 42.Rd2 Bd6 43.Kh2 Rf3 44.Rd1 Rf2! (44...Rf2 45.Qf2 Qd1–+) 0–1. Salvatore – yulio, ChessWorld.net, 2006.

5.d3 0–0

6.Nd2 a6 7.Ngf3 Nc6 8.a3 Bd7 9.0–0 Qc8 10.Re1 h6 11.c4 Bh3 12.Bh1 Qe6 13.d4 ed4 14.Nd4 Nd4 15.Bd4 c6 16.Rc1 Rac8 17.e4 Nd7 18.f4 White prepares the advance e5 18...Bf6 19.Nb3 Bd4 20.Nd4 Qg6 21.Bf3 Nf6 22.e5 (22.c5!? dc5 23.bc5+/–) 22...de5= 23.fe5 Ng4 24.Be4 Qg5 25.Nf3 Qd8 26.Qc2 g6 27.Rcd1 Qc7 Exerts pressure on the isolated pawn 28.e6 (better is 28.c5 Rce8 29.Qd2=) 28...f5?? (better is 28...fe6 29.c5 Rf6+=) 29.Rd7+– Qb8 30.Red1?? (better is 30.Bd3 Rf6 31.c5+–) 30...Ne3?? (better is 30...Nf6 31.Qc1 Nd7 (31...fe4 32.Qh6 Qa7 33.c5 Nd7 34.Rd7 Qc5 35.bc5 Rf3 36.Qg7; 31...Ne4?? 32.Qh6 Qa7 33.c5 Qc5 34.bc5 Nc5 35.Qg7#) 32.Rd7 Rc7 (32...fe4 33.Qh6 Qa7 34.c5 Qc5 35.bc5 Rf3 36.Qg7) 33.Qh6 Rd7 34.ed7 fe4 35.Qg6 Kh8 36.Qh6 Kg8 37.Qg6 Kh8 38.Qh6 Kg8 39.Qg6=) 31.Qc3 1–0. Macedo,A Soares De (1845) – Rodrigues,L Albuquerque, Aberto Do Brasil Taa Cidade Joo Pessoa, 2013.

6.Nd2 c6 7.Ngf3 Nbd7 8.0–0 Qc7 9.a3 Re8 10.c4 Nf8 11.c5 Ng6 12.cd6 Bd6 13.Nc4 Bf8 14.Rc1 a6 15.Nfd2 Be6 16.Qc2 Rad8 17.Nb3 Bd5 18.e4 Be6 19.h3 Nd7 20.Ne3 Be7 21.Nd5 Qd6 22.Ne7 Re7 23.Rfd1 Qb8 24.d4 Bb3 25.Qb3 ed4 26.Bd4 Ndf8 27.Bb6 Rdd7 28.f4 Rd1 29.Rd1 Rd7 30.Re1 Qd6 31.Be3 Ne7 32.Qb2 Ne6 33.f5 Nc7 34.Bf4+– Qd3 35.a4?? Ne8+= 36.Kh2 Qd4 37.Qb3 Qd3 38.Rb1 Qb3 39.Rb3 Rd4 40.Be3 Rd7 41.Bc5 Nc8 42.g4 b6 43.Be3 Ned6? 44.Rd3 f6+/– 45.e5! fe5 46.Bc6 Rc7 47.b5 ab5 48.ab5 e4 49.Rd4 Kf7 50.Bf4 Ke7 51.Bg5 Kf7 52.Bd2 Re7 53.Be3 Ra7 54.Kg3 Ra5 55.Kf4 Ke7 56.Bd2 (56.Be4?! Rb5 57.Bd5 Rb1+/–) 1–0. Grigoriev,Armen – Onem,Cem, Istanbul TUR, 2011. (=1.Nf3 Nf6 2.b4 d6 3.Bb2 e5 4.d3 Be7 5.Nbd2 0–0 6.g3 c6 7.Bg2)

6.Nd2 c6 7.Ngf3 Be6 8.0–0 h6 9.c4 Qd7 10.c5 Bh3 11.cd6 Bd6 12.Nc4 Bg2 13.Kg2 Re8 14.Be5 Be5 15.Nce5 Qe7 16.Qb3 Nbd7 17.d4 Ne5 18.Ne5 Nd5 19.b5 Qe6 20.bc6 bc6 21.Rfc1 Rab8 22.Qf3 Rbc8 23.e4 Nf6 24.Rc5 Red8 25.Rac1 Rd4 26.Nc6 Rc6 27.Rc6 Qe4 28.Qe4 Ne4 29.R6c4 Rc4 30.Rc4 Nd6 31.Rc6 Nb5 32.a4 Nd4 33.Ra6 Ne6 34.Ra7 f5 35.a5 Kh7 36.a6 f4 37.Rb7 Kg6 38.a7 f3 39.Kf1 Nc5 40.Rb6 Kh7 41.a8Q 1–0. usingprogram (2015) – hieromek, internet, 2013.

6.Nd2 c6 7.Ngf3 Bg4 8.0–0 Qc8 9.Re1 (9.Nc4 Nbd7+=) 9...Bh3 (9...Nbd7 10.h3 Be6 11.Ng5=) 10.Bh1 (10.e4 Bg2 11.Kg2 Nbd7+=) 10...h6= 11.e4 Nbd7 12.c4 Ng4 (12...Qc7 13.Bg2 Bg2 14.Kg2=) 13.Bg2 Bg2 14.Kg2 f5? (better is 14...a5!? 15.h3 Ngf6=) 15.ef5+/– h5 (15...Rf5 16.h3 Ngf6 17.d4+/–) 16.h3 (16.Qb3 Rf5 17.h3 Qf8+/–) 16...Nh6+/– 17.d4 Rf5 (17...Nf5 18.c5 Qc7 19.Qb3 Kh8 20.de5 de5 21.Ne5 Ne5 22.Be5+–) 18.de5 de5 19.c5 Qf8 20.Qb3 Qf7 21.Qf7 Nf7 22.Nc4 Rf8 23.Ne3 Rf6 24.Rad1 Ng5 25.Rd7+– Rf3 26.Nd1 Bd8 27.Be5 R3f7 28.Rf7 Kf7 29.f4 Ne6 30.Ne3 Bf6 31.Nc4 Be7? 32.f5 Ng5 33.h4 Nh7 34.Bg7! Rd8 35.Bc3 Rd5 36.Ne5 Kg8 37.Ng6 Bf8 38.Ne7 Be7 39.Re7 Rd3 40.Be5 Re3 41.Kf2 Re4 42.f6 Nf8 43.Bd6 Re6 44.f7 Kg7 45.Re6 Ne6 46.f8Q! Nf8 47.Bf8 Kf8 48.g4! hg4 49.Kg3 a5 50.ba5 Kg7 51.Kg4 1–0. Valenta,Vit (2160) – Gateri,Martin (2080), 40th Men Olympiad, 2012.

6.Nf3 c6 7.0–0 Na6 8.a3 Re8 9.Nbd2 Nd7 10.c4 f6 11.Qc2 Nf8 12.d4 Be6 13.Rad1 Nc7 14.Nb3 e4 15.Nfd2 d5 16.Nc5 b6 17.Ne6 Nce6 18.c5 (18.b5 f5+=) 18...b5 19.Rfe1 f5 20.Bh3 f4 21.Nf1 g6 22.Bc1 Ng5 23.Bg4 h5 (23...fg3!? 24.fg3 a5=) 24.gf4+= hg4 25.fg5 Bg5 26.Bg5 Qg5 27.Qc3 Ne6 28.Qg3 Qf6 29.e3 Ng5 30.Nd2 Nf3 31.Nf3 gf3 32.Kh1 a5 33.Ra1 ab4 34.ab4 Kg7 35.h3 (35.Ra5 Rf8=) 35...Kh6 36.Kh2 Qg5 37.Qg5 Kg5 38.Kg3 Kf5 39.Reb1 Rh8 40.Rc1 Rac8 41.Ra6? Rc7 42.Rh1 g5 43.Ra5 Rh4 44.Raa1 Rch7 45.Rh2?? g4 46.Rah1 gh3 47.Rh3 Rg4 (47...Rg4 48.Kh2 Rg2) 0–1. Burt,David F – Taylor,Michael AJ (1700), Beacon Seniors op, 2006. (=1.Nf3 d6 2.b4 Nf6 3.Bb2 e5 4.d3 Be7 5.g3 0–0 6.Bg2)

6.Nf3 c6 7.0–0 Be6 8.a3 Nbd7 9.c4 a6 10.Nbd2 Rb8 11.d4 ed4 12.Nd4 Ne5 13.Ne6 fe6 14.Qb3 Ng6 (14...Qd7!?+/–) 15.Bh3+– e5 16.Nf3 Kh8 17.Ng5 Qe8 18.Ne6 Rf7 19.Rad1 Nf8 (19...Bf8 20.Bf5+–) 20.c5 dc5 (20...d5 21.Be5 Ne6 22.Be6 Rf8 23.Bb8 Qb8+–) 21.Nc7 c4 (21...Kg8 22.Ne8 Re8 23.Be5 cb4 24.ab4+–) 22.Qc4 (22.Ne8?! cb3 23.Nf6 Bf6+=) 22...N8d7 (22...Kg8 23.Ne8 Re8 24.Be5 Bd8+–) 23.Ne8 Re8 24.Qf7 1–0. Janek – Osiel, internet, 2016.

6.Nf3 c6 7.c4 Bf5 8.0–0 Nbd7 9.Nbd2 h6 10.a4 Qc7 11.e4 Bg4 12.Qb3 a5 13.b5 Nc5 14.Qc2 cb5 15.ab5 Rac8 16.h3 Bf3 17.Bf3 Ne6 18.Bg4 (18.Bg2 Ra8+=) 18...b6 (18...Ng4 19.hg4 b6 20.Kg2=) 19.Rad1 (19.Qd1!?+=) 19...Ng4+= 20.hg4 Qd7 21.Rc1 Bg5 22.Qd1 (better is 22.Kh2+=) 22...h5?? (better is 22...Nc5 23.Rc2 Nd3–/+) 23.Rc2 (23.gh5 Nc5 24.Rc3 Qh3+=) 23...h4= 24.Kg2 hg3 25.fg3 g6 26.Nf3 Be7 27.Nh4 Kg7 28.Qf3 Bg5 29.Rcf2 Bh4 30.gh4+= f6 31.Kg3 Rf7 32.Qe3 Qc7 33.Bc1 Rh8 34.Rh1 Qc5 35.Qd2 Nf4 36.Qc3 g5 37.h5 Rd8 38.Kf3 d5= 39.Bf4 de4+= 40.de4 gf4 41.h6 Kh7 42.g5? fg5–+ 43.Rg2 Rfd7 44.Kg4 Rd3 45.Qb2 Qc8 46.Kh5 Rh3 47.Kg5 Rh1 48.Qe5–+ Rg8 49.Kf4 Qf8 (49...Qf8 50.Qf5 Qf5 51.Kf5 Rg2–+; 49...Rf1 50.Ke3 Qh3 51.Rg3 Rg3 52.Qg3 Qg3 53.Kd2 Rf2 54.Kd1 Qg1) 0–1. Di Lascio,Savino (1950) – Lauria,Amilcare (2135), Alba Adriatica op, 2009.

6.Nf3 Nc6 7.b5= Nb8 8.Nbd2 Nbd7 9.c4 a6 10.a4 ab5 11.cb5 c6 12.bc6 bc6 13.0–0 Rb8 14.Qc2 Bb7 15.d4 ed4 16.Bd4 c5= 17.Bc3 Nd5 18.Rfc1?? Rc8?? 19.a5 Ba6 20.Ne4= Nc3 21.Qc3?? Be2 22.Nfd2? Ne5?? 23.a6? Bf6?? 24.Nf6+– gf6 25.a7 d5 26.Qe3 Bg4? 27.Rc5 Rc5 28.Qc5 Be6 29.Qc3 Qa8 30.h3 Re8 31.f4+– Nd7 32.Kh2 Re7? 33.Qc7 Kf8 34.Rb1 Ne5?? 35.Qb8 Re8 36.Qa8 Ra8 37.Rb8 Bc8 38.Ra8 Ke7 39.Rc8 (39.Rc8 h6 40.a8Q+–) 1–0. coloplayah (2140) – petemarkou (2060), net–chess.com, 2006.

6.Nf3 Re8 7.a3 a5 8.b5 Nbd7 9.0–0 Nc5 10.c4 e4 11.Ne1 ed3 12.Nd3 Nfe4 13.f3 Nd3 14.ed3 Bf6 15.d4 Ng5 16.Nc3 c5 17.bc6 bc6 18.f4 Nh3 19.Kh1 Rb8 20.Ra2 Qe7 21.Bc6+/– Ba6 22.Nb5 Qe2 23.Be8?? Nf2–+ 24.Rf2 Qd1 25.Kg2 Re8 26.Bc3 Bb5 27.cb5 Qb3 28.Ba5 Qb5 29.Bb4 g6 30.Rad2 Qd5 (30...Qd5 31.Kh3 Re3–+) 0–1. Sicotte,Marc – Gilman,Arkadiy M (2225), Montreal Sicotte 2nd, 2005.

5.d3 c6

6.c4 0–0 7.a3 Nbd7 8.Nc3 Nb6 9.Rc1 10.Nf3 Qd7 11.0–0 Bh3 12.c5 Bg2 13.Kg2 dc5 14.Ne5 Qe6 15.bc5 Bc5 16.Na4 Na4 17.Qa4 Bd6 18.Nf3 Nd5 19.Rfe1 Rfe8 20.e3 Qg6 21.Qb3 Re7 22.Nh4 Qg4 23.Rc4 Qe6 24.Kg1 Nb6 25.Rc3 Be5 26.Qe6= Re6 27.Rb3 Bb2 28.Rb2 Rd8 29.d4? Rd4!–/+ 30.Ra1 Rd5 31.Kg2 g6 32.Nf3 c5 33.a4 Re7 34.Rc2 Rc7 35.Nd2 Kg7 36.Ne4 c4 37.Nc3 Ra5 38.Rb2 Nd5 39.Nb5 Rc8 40.Nd4 c3 41.Rb7–/+ Rc4 42.Rb5=+ Rc5 43.Rc1 a6 44.Ra5 Ra5 45.e4 Ra4–/+ 46.ed5 Rd4 47.Rc3 Rd5 48.Rc6 a5 49.Ra6 h5 50.h4 Rf5 51.Kf1 f6 52.Ra7 Kh6 53.Ra6 Kg7 54.Ra7 Kf8 55.Kg2 g5 56.hg5 fg5 57.g4 hg4 58.Kg3 Ke8 59.Kg4 Rb5 60.f4 gf4 61.Kf4 Kd8 62.Ke4 Kc8 63.Kd3 Kb8 64.Rh7 Rc5 65.Kd4 Rc6 66.Rh5= a4 67.Ra5 Rg6 68.Kc3 Rg4 69.Kb2 Kb7 70.Ka3 Kb6 71.Rh5 Rg3 ˝–˝. Sunye Neto,Jaime – Groszpeter,Attila, Wch U20 Tjentiste, 1975.

6.Nd2 0–0 7.Ngf3 a5 8.a3 ab4 9.ab4 Nbd7?? 10.Ra8+– Nb6 11.Ra1 c5 12.bc5 dc5 13.Ne5 Bd6 14.0–0 Re8 15.Ndc4 Nc4 16.Nc4 Bc7 17.Ra8 b5 18.Nd2 Qe7 19.Bf6 Qf6 20.Bb7 Qe6 21.Be4 f5 22.Bf3 Bd7 23.Re8 Be8 24.Re1 Bc6 25.Bc6 Qc6 26.Nb3 h5 27.h4 c4 28.dc4 Qc4 29.Qd3 Qg4 30.Kg2 Qa4 31.Ra1 Qb4 32.Ra8 Kh7 33.Qf5 Kh6 34.Rh8 1–0. coloplayah (1985) – gdraper (1850), net–chess.com, 2005.

6.Nd2 Qb6 7.a3 Be6 8.Ngf3 a5 9.c3 Nbd7 =+.

6.Nd2 Nbd7 7.a3 Qb6 8.Ngf3 a5 9.Nc4 Qb5 10.Qd2 ab4 11.ab4 Ra1 12.Ba1 0–0 (12...Ne4! 13.de4 Qc4–/+) 13.0–0= Nd5 14.c3 Qa4 15.Ne3 Ne3 16.Qe3 f5 17.Qd2 Nf6 Black plans e4 18.Bb2 Qb3 19.Ra1 Qe6 Black intends e4 20.c4 e4 21.Ng5 Qd7 22.de4 fe4 (22...h6!? 23.Nh3 fe4+=) 23.Ne4+/– ˝–˝. Turine,Oswaldo (1885) – Cervi,Guilherme Borges (1930), Campo Grande BRA, Open, 2013.

6.Nd2 Be6 7.Ngf3 0–0 8.0–0 Qd7 9.Ng5 Bf5 10.e4 Bg4 11.f3 Bh5 12.g4 Bg6 13.h4 h6 14.Nh3 Na6 15.a3 Nc7 16.c4 Ne6 17.Nb3 Qc7 18.Kh1 Nd7 19.h5 Bh7 20.Qd2 Qd8 21.d4 Nb6 22.Rac1 Qc7 23.d5+= Nf4 24.Nf4 Bg5 25.Qf2 Bf4=+ 26.Rc2 Rac8 27.dc6 bc6 28.c5= dc5 29.Nc5 Rfd8 30.Bc1 Bc1 31.Rfc1 Kh8 32.Bf1 Qd6?? 33.Nb7+– (33.Nb7 Qe7 34.Nd8 Rd8 35.Rc6+–) 1–0. Valenta,Vit (2190) – Mrazik,Lubomir (2095), Tatry Open Tatranske Zruby SVK, 2006.

5.e3 0–0

6.d3 Na6 A) 7.a3 c5 8.Bc3 (8.Qd2 Qb6 9.f4 ef4 10.gf4 d5 11.Nc3; 8.bc5 Nc5 9.Nf3 Be6 10.Nc3 Rc8 11.0–0; 8.c3 d5 9.Ne2 Bg4 10.0–0 Qd7 11.d4) 8...cb4 9.ab4 Qb6 10.Qd2 Be6 11.Na3; B) 7.b5 Nc5 8.Nf3 (8.Ne2 Na4 9.Ba3 a6 10.ba6 Ra6 11.0–0; 8.Nc3 a6 9.ba6 Ra6 10.Nf3 Re8 11.0–0; 8.d4 Na4 9.Ba3 e4 10.c4 Nb6 11.Qc2; 8.f4 ef4 9.ef4 Ng4 10.Qd2 Bf6 11.Bf6) 8...Na4 9.Bc1 a6 10.ba6 Ra6 11.0–0; C) 7.Qd2 C1) 7...Re8 8.Ne2 (8.a3 c5 9.c4 cb4 10.ab4 d5 11.c5; 8.Nh3 c6 9.0–0 Bf5 10.a3 Qd7 11.Ng5) 8...c6 9.0–0 Qb6 10.a3 c5 11.f4; C2) 7...c5 8.b5 Nc7 9.c4 a6 10.ba6 Na6 11.Ne2; C3) 7...Qe8 8.a3 (8.Ne2 c5 9.bc5 Nc5 10.Nbc3 Be6 11.d4; 8.c4 c6 9.a3 Bg4 10.Ne2 Bd8 11.Nbc3) 8...c6 9.c4 Bg4 10.Nf3 Qd7 11.0–0; C4) 7...c6 8.Ne2 (8.a3 Bf5 9.Ne2 Qb6 10.0–0 c5 11.f4) 8...Qb6 9.a3 c5 10.f4 ef4 11.Nf4.

6.d3 c6 7.a3 A) 7...Be6 8.Nf3 (8.Ne2 a5 9.0–0 ab4 10.ab4 Ra1 11.Ba1; 8.Nh3 a5 9.Ng5 Bg4 10.Qd2 Nd5 11.h3; 8.c4 a5 9.b5 Re8 10.Nf3 cb5 11.cb5) 8...Nbd7 9.0–0 a5 10.Ng5 Bg4 11.Qd2; B) 7...a5 8.Nf3 (8.Nd2 Be6 9.c4 Qb6 10.Qb3 ab4 11.Qb4; 8.c4 ab4 9.ab4 Ra1 10.Ba1 Na6 11.Bc3) 8...Qb6 9.Qd2 ab4 10.Qb4 Qc7 11.0–0.

6.d3 c6 7.Nd2 Be6 (7...Qb6 8.a3 (8.Rb1 Bg4 9.Ngf3 Be6 10.c4 a5 11.Bc3; 8.c3 Be6 9.Ngf3 a5 10.a3 ab4 11.ab4) 8...Be6 9.Bh3 Bh3 10.Nh3 Nbd7 11.0–0; 7...Bg4 8.Ngf3 (8.Ne2 a5 9.ba5 Qa5 10.0–0 Nbd7 11.Nb3; 8.Bf3 Be6 9.a3 a5 10.Ne2 Nbd7 11.0–0) 8...a5 9.ba5 Qa5 10.0–0 Nbd7 11.h3; 7...a5 8.ba5 (8.a3 Be6 9.c4 Qb6 10.Qb3 ab4 11.Qb4) 8...Qa5 9.Ngf3 Qb4 10.Rb1 Qa4 11.a3) 8.c4 (8.Ngf3 Qb6 9.c3 a5 10.a3 ab4 11.ab4; 8.d4 Nbd7 9.a3 a5 10.c4 e4 11.Ne4; 8.a3 a5 9.c4 Qb6 10.Qb3 Nbd7 11.Ngf3; 8.Ne2 Qb6 9.c3 a5 10.a3 d5 11.0–0) 8...Qc7 (8...d5 9.Be5 dc4 10.dc4 Bb4 11.a3+= (11.Rb1–/+); 8...Qb6 9.Qb3 Nbd7 10.Ngf3 a5 11.a3) 9.Ne2 (9.Ngf3 a5+= 10.a3 Qb6 11.Bc3) 9...a5 (9...d5 10.a3+= Nbd7 11.0–0) 10.a3 (10.ba5 Qa5 11.0–0 Nbd7+=; 10.b5 cb5 11.cb5) 10...d5 (10...ab4 11.ab4) 11.Bc3 (11.0–0 Nbd7 12.Bc3 dc4 13.dc4 Rfd8+=; 11.cd5+=) 11...ab4 (11...Rd8 12.Qb1–/+) 12.ab4+= Nbd7 13.0–0 dc4 14.dc4 Nb6 15.Qb3 Nc4 (15...Rad8 16.f4 Rd3 A) 17.Be5? Qd7 (17...Rb3?! 18.Bc7 Re3 19.Nd4 Nc4 20.Ne6 Nd2 21.Nf8+=) 18.Bc3 Rd2 19.Bd2 Qd2–+; B) 17.fe5=) 16.Nc4 b5 17.Qb2 Bc4 18.Be5 Qb6 (18...Qd7 19.Rfd1 Ra1 20.Qa1=) 19.Rfc1 Ra1 20.Ra1 c5 21.bc5 Qc5 22.Nf4 (22.Bd4 Qf5=) 22...Rd8 23.h3 Qb4 (23...Ne8!?=) 24.Bf6+= gf6 25.Qc2 Qc5 26.Be4 h6 27.Ra6 Qe5 28.Bf3 Rc8 (28...Bb4 29.Qb1 Bc3 30.Be2+=) 29.Bb7 (29.Bd5! Kg7 30.Ra7+–) 29...Rd8+= 30.Bf3 Rc8 31.Bh5 (better is 31.Bd5 Kg7 32.Ra7+–) 31...Be6?? (better is 31...b4 32.Ra7 Qc5+=) 32.Bf7!+– Kf7 33.Ne6 1–0. Zielinska,Marta (2365) – Wiliczkiewicz,Zdzislawa (2085), Poland–chT2 Wisla, 1998.

6.d3 c6 7.Ne2 A) 7...Qb6 8.Qd2 (8.a3 a5 9.Qd2 Bg4 10.f4 ab4 11.ab4; 8.Bc3 Be6 9.0–0 Nbd7 10.a4 Nd5 11.Qd2) 8...a5 9.a3 Bg4 10.h3 Be2 11.Ke2; B) 7...Be6 8.0–0 (8.a3 a5 9.0–0 ab4 10.ab4 Ra1 11.Ba1; 8.Qd2 a5 9.ba5 Qa5 10.0–0 Nbd7 11.Nbc3; 8.c4 d5 9.c5 Nbd7 10.0–0 a5 11.a3; 8.Bc3 Nbd7 9.0–0 Qb6 10.a4 Nd5 11.Qd2) 8...Qb6 9.Qd2 a5 10.a3 Na6 11.c3; C) 7...Bg4 8.h3 (8.a3 a5 9.h3 Be6 10.0–0 Qd7 11.Kh2; 8.Qd2 Qb6 9.f4 Nd5 10.Bd5 cd5 11.Nbc3) 8...Be6 9.f4 Nd5 10.Bd5 cd5 11.Nbc3; D) 7...a5 8.ba5 (8.a3 Qb6 9.Qd2 Bg4 10.h3 Be2 11.Ke2; 8.b5 cb5 9.0–0 Nc6 10.f4 Be6 11.Qd2) 8...Qa5 9.Bc3 Qc7 10.0–0 b5 11.Nd2.

6.d3 c6 7.Nf3 A) 7...Qb6 8.a3 (8.Qd2 Nbd7 9.0–0 Re8 10.c4 a5 11.a3; 8.c3 a5 9.a3 Bf5 10.0–0 ab4 11.cb4; 8.Bc3 Be6 9.0–0 Nd5 10.a3 Nc3 11.Nc3) 8...a5 9.Qd2 ab4 10.Qb4 Qc7 11.0–0; B) 7...Be6 8.c4 (8.0–0 Qb6 9.a3 a5 10.Ng5 ab4 11.Ne6; 8.Qd2 a5 9.Ng5 Bg4 10.h3 Bf5 11.ba5; 8.a3 a5 9.0–0 ab4 10.ab4 Ra1 11.Ba1; 8.Ng5 Bg4 9.Qd2 Nd5 10.h3 Bc8 11.Nf3) 8...a5 9.b5 cb5 10.cb5 Qb6 11.Nc3; C) 7...Bg4 8.0–0 (8.a3 a5 9.0–0 ab4 10.ab4 Ra1 11.Ba1; 8.h3 Be6 9.0–0 Qb6 10.a3 a5 11.Qd2; 8.Qd2 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1; 8.c4 Na6 9.a3 Qd7 10.h3 Be6 11.Ng5) 8...a5 9.ba5 Qa5 10.h3 Be6 11.Ng5; D) 7...a5 8.ba5 (8.a3 Qb6 9.Qd2 ab4 10.Qb4 Qc7 11.0–0) 8...Qa5 9.Nbd2 Be6 10.c4 Re8 11.0–0.

6.Ne2 Na6 7.a3 c5 8.bc5 Nc5 +=.

6.Ne2 c6 7.a3 Bf5 8.d3 Nbd7 9.Nd2 Rc8 10.0–0 Nb6 11.c4 Bd3–/+ 12.Re1 Bc4 13.Rc1 Bd5 14.Bh3 Rb8 15.Nc3 Qc7?? 16.Nb5 Qd8 17.Nc3 Be6 18.Bg2 Qd7 19.Ne2 Bg4 20.Qb3 d5 21.Be5–/+ Rbd8 22.Nf4 Be6 23.Bd4 Ne4 24.Ne4 de4= 25.Ne6 fe6 26.Be4 Rf7 27.Red1+/– Nd5 28.Ba7 Rdf8 29.f3 Qd8 30.Kf2 b6+– 31.Rc6 Bf6? 32.Bd5 ed5 33.e4 Ra7 34.Rd5 Qe8 35.Rd7?? Rf7?? 36.Ra7 Kf8 37.Rf7 Qf7 38.Rc8 (38.Rc8 Qe8 39.Re8 Ke8 40.Qe6 Kf8 41.Qb6+–) 1–0. coloplayah (2140) – sgalahad (2015), net–chess.com, 2006.

6.Ne2 e4 7.d3 Bf5 (7...ed3 8.cd3 Na6 9.a3=) 8.0–0 Nc6 9.b5 (9.de4 Be4 10.Be4 Ne4=) 9...Ne5 10.de4 Ne4 (10...Be4!? 11.Be5 de5=) 11.Nd4+= Bg6 12.f4 Nc4 13.Bc1 f5 14.Ne6 Qd7 15.Nf8 Rf8 16.Na3 (16.Qd5 Bf7 17.Qb7 Bf6+=) 16...Na3 17.Ba3 Qb5 18.Qd3 Qb6 (18...Qc6!?+=) 19.Rab1+/– Qc6 20.Be4 fe4 21.Qb3 Kh8 22.Qb7 Qc2 23.Rb2 Qd3? (23...Qc3 24.Qa7 Bh5 25.Rb3+/–) 24.Rb3 Qe2? (24...Qc2 25.Rc1 Qa2 26.Bb2+–) 25.Rf2?? (better is 25.Qc7!? Re8 26.Qa7 Bf7+–) 25...Qe1 (25...Qd1 26.Kg2 Bd8 27.Qa8+/–) 26.Kg2 Bf5?? (26...Bd8 27.Qa8 Bh5 28.Qe4 Bg4+–) 27.Rbb2 Qe3 28.Qb3?? Qe1?? 29.Rbe2?? Qa5+= 30.Bb2 d5 31.Bc3 Qc5 32.h3?? e3?? 33.Rf1?? d4–+ 34.Ba1?? d3 35.Ree1 e2 36.Rg1 Be4 37.Kh2 Qf2 0–1. Caceres,Elton Carlos (1855) – Arantes,Gustavo Ferreira, Foz do Iguacu BRA, 2nd Open, 2014.

5.Nf3 0–0

6.0–0 a6 7.d3 Nc6 8.a3 Bd7 9.Nbd2 Qc8 10.Re1 h6 11.c4 Nd8 12.Rc1 Ne6 13.e4 c5 14.Nf1 b5 (14...b6!?=) 15.cb5+= Bb5 16.bc5 Nc5 17.d4 ed4 18.Nd4 Rb8 19.Nf5 Qe6 20.Ne7 (20.Bh3 Ne8 21.e5+–) 20...Qe7+= 21.e5 (21.Bf6 Qf6 22.e5 Qg6=) 21...de5 (21...Nd3!? 22.ef6 Qe1 23.Qe1 Ne1 24.Re1 Bf1 25.fg7 Rfc8–/+) 22.Re5= Ne6 23.Ne3 Rfd8 24.Qe1 Bd3 25.Qc3 Bg6 26.Nd5 Nd5 27.Bd5 Qf6 28.Ba1 Ng5 29.Qe3 Qd6 30.h4 Nh7 31.Rc6 Rb1 32.Kh2 Qd7?? (better is 32...Qf8 33.Rg6 Ra1 34.Ra6 Nf6 35.Rf6 gf6+/–) 33.Rg6+– Ra1 (33...Nf6 34.Qh6 Ng4 35.Rg4 Qg4+–) 34.Qh6 (34.Qh6 Qh3 35.Kh3 Rh1 36.Kg2 Rh2 37.Kh2 Rd5 38.Qg7; 34.Ra6?! Nf6 35.Bf3 Qc8+=) 1–0. Macedo,A Soares De (1845) – Dantas,Rhuan De Araujo (1625), Joao Pessoa BRA, Open, 2013.

6.0–0 c6 7.c4 Be6 8.d3 h6 9.Nbd2 Nbd7 10.Qc2 Rc8 11.a4 Nh7 12.b5 f5 13.bc6 bc6 14.Rab1 g5 15.h3 Rf7 16.d4 e4 17.d5 cd5=+ 18.Nd4 Nc5 19.Ba3 Qd7=+ 20.Rfc1 Bf6 21.Ne6 Ne6 22.e3? d4 23.Rb5 d3 24.Qd1 Nc5 0–1. wlittle (1645) – rsarobe (1755), net–chess.com, 2001.

6.0–0 Nbd7 7.d3 d5 8.Ne5 Ne5 9.Be5 Bb4 10.Nd2 Bd2 11.Qd2+= Qe7 12.Qg5 Be6 13.Bf6 Qf6+= 14.Qf6 gf6 15.Rab1 b6 16.c4 Rad8 17.cd5 Bd5 18.Bd5 Rd5 19.Rfc1 c5 ˝–˝. Cingari,Julio – Soraire,Diego, Feria del Orinoco op, 2001.

6.0–0 e4 7.Nd4 c5 8.bc5 dc5 9.Nb3 c4 10.Nd4 Bc5 11.e3 Bg4 12.f3 ef3 13.Bf3 Bf3 14.Qf3 Qd5 15.Na3 (15.Nf5 Qf3 16.Rf3 Nbd7=) 15...c3+= 16.dc3 a6 (16...Nc6 17.c4 Qf3 18.Rf3–/+) 17.c4 Qf3 18.Rf3 Re8 19.Re1 Ne4 20.Nb1 Nd7 21.Nb3 Bb4 22.Ref1 f6 23.Bd4 Ne5 24.Be5 Re5 25.Nc1 Ng5 (25...Bd6 26.Rd1+=) 26.Rf5 (26.Nd3!? Nf3 27.Rf3=) 26...Re3 27.Nd3 Bf8 28.Nc3 Rc8 29.h4 Ne4 (29...Rg3?! 30.Kf2 Bd6 31.hg5 Rc4 32.Rd5 Rg5 33.Rd6 Rc3 34.Rc1=) 30.Ne4 Re4 31.c5 Rc4 32.R1f2 Ra4 33.R2f4 (33.Kg2!?–/+) 33...Ra2–+ 34.Rc4 Ra5 (34...b6 35.g4–+) 35.g4 (35.Kg2 Ra3–+) 35...b5 36.cb6?? (better is 36.Rd4–+) 36...Ra1 (36...Rc4 37.Ra5 Rg4 38.Kf2 Rh4 39.b7+/–) 37.Rf1 Rf1 (37...Rc4 38.Ra1 Rg4 39.Kf1 Rh4 40.b7+/–) 38.Kf1 Rc4 39.b7 Bd6 0–1. Gaitandzhiev,Bozhidar – Nikolov,Sav (1970), 2nd Milko Bobotsov Mem, Sofia BUL, 2010.

6.0–0 e4 7.Ng5 =+.

6.0–0 h6 7.d3 a6 8.c4 Nbd7 (8...Nc6 9.a3=) 9.Nc3+= Rb8 10.Qc2 Re8 11.Rfd1 Nf8 (11...Nb6 12.a4+=) 12.d4+/– ed4 13.Nd4 Bg4 14.Nf5 c6 15.b5 (15.Nd6 Bd6 16.c5 Re6+/–) 15...Qc7 (15...Bf5 16.Qf5 Qd7 17.Qc2+=) 16.Ne7+/– Re7 17.Ba3 Rd8 18.bc6 bc6 19.Rd2 Red7 20.Qa4 d5 21.cd5 Nd5?? (better is 21...cd5 22.Rc1 Qe5 23.Qa6 Ne6+/–) 22.Nd5+– (worse is 22.Qg4 Nc3 23.Bf8 Qe5 24.Rd7 Ne2 25.Qe2 Qa1 (25...Qe2?? 26.Rd8 Kh7 27.Bc6+–) 26.Bf1 Rd7 27.Bg7 Qd1 28.Bh6 Qe2 29.Be2 Rd4+–) 22...cd5 23.Qg4 Qc3 (23...Ne6 24.Bb2+–) 24.Bb2 f5 25.Bc3 fg4 26.Rad1 Rc8 27.Bb4 Nh7 (27...d4 28.Rd4 Rd4 29.Rd4 Rc1 30.Bf1+–) 28.Bd5 Kh8 29.Be6 Rd2 30.Rd2 (30.Bc8?! Rd1 31.Kg2 Ra1 32.Ba6 Ra2=) 30...Rc1 (30...Rb8 31.Be7+–) 31.Kg2 Nf6 32.Bf5 g5 (32...g6 33.Bg6 Kg7 34.Bf5+–) 33.Ba3 Rc7 34.Bb2 Kg7 35.Rd6 Rf7 36.Bg4 a5 37.e4 1–0. Shamieh,J (2065) – Jihad,Al Husseini, Beirut LIB, 2011.

6.a3 c6 7.d3 Be6 8.Nc3 h6 9.Ne4 Ne4 10.de4 Qd7 11.h3 Qc7 12.Rc1 a6 13.0–0 Nd7 14.Nd2 Nb6 15.f4 (15.c4 a5+=) 15...f6 (15...a5!?–+) 16.f5 Bc4 17.Nf3 (17.Nc4!? Nc4 18.Qd3+=) 17...Rad8 18.Qe1 d5 19.Rd1 (19.Nd2!?–/+) 19...Na4 (19...Na4 20.Bc1 Qb6 21.Kh2 Qb5 22.ed5 Be2–/+) 0–1. Macedo,A Soares De (2025) – Mandici Filho,Michelle, 6th Magistral RN – Grupo B, 2009.

6.d3 (--> 5.d3 0–0 6.Nf3).

4.Bg2 g6

5.d3 Bg7 6.Nd2 0–0 7.e3 Nc6 8.b5 Ne7 9.c4 Rb8 10.Ne2= Bf5 11.Nb3 Bg4 12.0–0 Qd7 13.Qc2 Bh3 14.d4 Bg2 15.Kg2 Qg4 16.h3 Qe4 17.Qe4+= Ne4 18.f3 Ng5 19.h4 Ne6 20.d5 Nd8 21.e4 c6 22.bc6 bc6 23.Rab1 cd5 24.cd5 f5 25.Nd2 Nb7 26.Ba3+/– Nc5 27.Nb3?? Nb3?? 28.ab3 fe4 29.fe4 Rb6 30.b4 Rf1 31.Kf1 a6 32.Nc3 Bh6 33.Ke2 Kf7 34.b5 a5? 35.g4 Bf4 36.h5 Kf6? 37.Na4+– Rb7 38.Bd6 gh5? 39.gh5 Nc8 40.Bc5 Kg5 41.d6 Rd7 42.Rd1 Kh5 43.b6 Bg5 44.Rb1 (44.Rb1 Nd6 45.Bd6 Rd6 46.b7 Rd2 47.Ke1+–) 1–0. coloplayah (2175) – lucianobalz (1905), net–chess.com, 2007.

5.d3 Bg7 6.Nf3 0–0 7.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5 7.d3).

5.d3 Bg7 6.Nf3 Nbd7 7.0–0 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5 7.d3 Nbd7).

5.e4 Bg7 6.Ne2 0–0 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e4 d6 5.g3 0–0 6.Bg2 e5 7.Ne2).

5.Nf3 Bg7 6.0–0 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5).

5.Nf3 Bg7 6.c4 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6 6.Bg2 e5).

5.Nf3 Bg7 6.d3 0–0 7.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5 7.d3).

5.f4 ef4 6.gf4 Bg7 7.Nf3 c6 8.0–0 Qb6 9.Bd4 Qb4 10.Nc3 0–0 11.Rb1 Qa5 12.e4 Nbd7 13.Kh1 Qh5 14.Qe1 Ng4 15.Bg7 Kg7 16.d4 b6 17.Qg3 Ne3 18.Rf2 f5 19.Ng5= Ng4 20.Re2 Re8 21.ef5 Re2 22.Ne2 gf5 23.Bc6+/– Rb8 24.Re1 h6 25.Ne6 Kh8 26.Nc3 Bb7 27.Bb7+/– Rb7 28.d5 Nc5= 29.Nb5 Ne4–/+ 30.Re4 fe4 31.Qc3 Kh7–+ 32.h3 Qd5 33.Nbd4 Ne5! 34.Qc8?? e3–+ 35.Kh2 Nf3 36.Kg3 Nd4 37.Nf8 Kg7 (37...Kg7 38.Ne6 Ne6 39.Qc3 Nd4–+) 0–1. Bustelo,Tabare (2095) – Arias,Jose Enrique (2100), URU–ch, 2004.

5.c4 Bg7

6.Nc3 0–0 7.d3 Re8 (7...Nc6 8.b5 Nd4 9.e3 Nf5 10.Nf3 a6 11.a4) ˝–˝. Kallio,Heikki (2450) – Hunt,Adam (2390), EU–ch U20, 2000.

6.d3 0–0 7.Nc3 Re8 8.Qc2 Nc6=+ 9.b5 Nd4 10.Qd1 a6 11.e3 Ne6 12.Nge2 ab5 13.cb5 d5 14.0–0 d4 15.ed4 ed4 16.Ne4 Ne4 17.Be4 Ng5 18.Bg2=+ Bg4 19.f3 Bh3 20.Bc1 Bg2 21.Kg2=+ Qd5 22.a4 Qf5 23.g4 Qe5 24.Re1 Qd5 25.Bg5 Qg5 26.Rc1 Re3 27.Rc7= Rae8 28.Nc1?? Re1–+ (29.Qb3 Qf4 30.Qf7 Qf7 31.Rf7 Kf7–+) 0–1. Ciro Sanchez – Dopper,Johan, corr 3GMM–07, 1997.

6.d3 0–0 7.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6 6.Bg2 e5 7.d3).

6.d3 Na6 7.a3 =.

6.d4 Nbd7 7.Nf3 0–0 8.Nbd2 e4 9.Ng5 e3 10.Nde4 Ng4 11.Nh3? ef2–+ 12.Kd2? Nb6 13.Kd3 Nc4! 14.Qc1 d5 15.Nd2 Nce3 16.Bf3 Bf5 17.Kc3 Bd4 18.Kb3 Bc2 (18...Bc2 19.Qc2 Nc2–+) 0–1. Diener,Rudolf (2085) – Von Weizsaecker,Robert K, corr W–ch M798, 1999.

6.e4 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.e4 d6 5.g3 0–0 6.Bg2 e5).

6.Nf3 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0–0 5.g3 d6 6.Bg2 e5).

6.Nf3 a5 7.Qa4 Qd7 =.

6.Nf3 Nc6 7.b5 Ne7 8.0–0 0–0 9.d4 ed4 10.Nd4 Rb8 11.Qc2 Nf5 12.Nd2 Nd4 13.Bd4 Re8 14.e3 Ra8 15.a4 Qe7 16.a5 a6 17.Qb2 ab5 18.cb5 Rb8 19.Rfc1 Bf5 20.Qc3 Rec8 21.Qa3 Ne4 22.Nb3 Qd7? 23.Qa4 Bd4 24.Nd4 Nc5 25.Qd1 Bd3 26.b6 c6 27.Ra3 Ba6 28.h4 Re8? 29.Nc6!+– bc6 30.Rc5! d5 31.Rac3 Rec8 32.Qd4 Rb7 33.Bd5! Qh3 34.Bg2 Qe6 35.Rc6 (35…Rc6 36.Rc6+–) 1–0. Krejci,Jan – Rerabkova,Lucie, Svetla nad Sazavou op–A, 1999.

4.Nh3 Bh3

5.Bh3 a5 6.b5 c6 7.Nc3 cb5 8.Nb5 Qb6 9.a4+= Nc6 10.c4 d5 11.cd5 Nd5 12.Bg2 Ndb4 13.0–0 Bc5 14.Qb3 Nd4 15.Bd4+= Bd4 16.Nd4 ed4 17.d3 0–0= 18.Rfc1 Rac8 19.Be4 Rc1 20.Rc1+= g6 21.Qc4 Nc6 22.Bd5 Qb4 23.Bc6+/– Qc4 24.Rc4+– bc6 25.Rc6 Rb8 26.Rc5 Rb2 27.Ra5 Re2 28.Rd5 Re1 29.Kg2 f5 30.Rd4 Kf7 31.Rd7 Kg8 32.d4 Ra1 33.Ra7 Rd1 34.a5 Rd4 35.a6 Rd8?? 36.Rb7 Ra8 37.a7 (37.a7 Ra7 38.Ra7+–) 1–0. Wall,Bill – TennisPro, chess.com, 2008.

5.Bh3= Nbd7 6.0–0 Be7 7.c4 0–0 8.Nc3 Nb6 9.d3 a5 10.b5 c6 11.e3 cb5 12.Nb5+/– Nfd7 13.Qh5 Nf6 14.Qf5 Nbd7 15.Bg2 Rb8 16.Bc3 b6 17.f4 ef4 18.Rf4 Nc5 19.Raf1 Qc8 20.Nd4 Qf5 21.Nf5 Rfe8 22.Ng7 Kg7+/– 23.Bf6 Bf6 24.Rf6 Rf8?? 25.Rd6+– Ne6 26.d4 b5 27.c5 b4 28.Bd5 a4 29.Be6 fe6 30.Re6 Rf1–+ 31.Kf1 b3 32.ab3 ab3 33.Re7 Kf6 34.Rh7 b2 (34...b2 35.Rh6 Kf5 36.e4 Kg5–+) 0–1. Wall,Bill – KnightsRow, internet, 2006.

3.g3 g6

4.f4 Nc6 =.

4.Bg2 Bd7 5.Bb7 Nc6 6.Ba8 Qa8 7.d3 Nb4+/– 8.e4 Nf6 9.f3 Bg7 10.a3+/– Nc6 11.Ne2 0–0 12.Nd2 Be6 13.c4 h6 14.Rb1 Nh7 15.h4 Nd4 16.Nd4 ed4 17.Nb3 c5 18.Ke2 f5+/– 19.Nd2 fe4 20.Ne4 Nf6 21.Nd6 Ng4?? 22.f4?? Ne3 23.Qg1+= Bg4 24.Kd2 Qc6–/+ 25.Ne4 Nc4 26.dc4= Qe4 27.Re1 Qf3 28.Rh2 Qb3 29.Kc1 Qc4 30.Kb1 Bf5 31.Ka1 Be6 32.Bc1? Qc3 33.Bb2 Qb3 34.Bc1?? d3 35.Re5 Qa3 36.Ba3+– Be5 37.fe5 Rc8 38.Bc5 a5 39.Rd2 Bc4 40.Qd4 (40.Qd4 Bb5 41.Qd5 Kh8 42.Be7+–) 1–0. coloplayah (1985) – bar (1900), net–chess.com, 2005.

4.Bg2 Bg7

5.c4 Na6 6.Qa4 Bd7 7.Qd1 Nb4 8.Bb7 –/+.

5.c4 c6 6.d4 Nd7 7.Nh3 Ne7 8.0–0= 0–0 9.de5 de5 10.Nc3 Nf5 11.Ne4 Qc7 12.c5 Rd8 13.Qb3 Nf8 14.Rad1 Be6 15.Qc2 a5 16.a3 ab4 17.ab4 Rd1 18.Rd1 Ra2 19.Qb1 Nd4 20.Bd4 ed4 21.Nf4 Ra8 22.Ne6 Ne6 23.Bh3 f5 24.Nd6+= Kf8 25.g4?? Nf4=+ 26.Bf1 fg4 27.Qe4= Nh3 28.Bh3 gh3 29.Rd3?? Ra1 (29...Ra1 30.Rd1 Rd1#) 0–1. Harnas (1785) – berlinwall (1870), internet, 2007.

5.c4 Nd7 6.d3 Rb8 7.a4 b6 8.e3 Bb7 9.Bb7 Rb7 10.Qf3 Rb8 11.Ne2 Ne7 12.Qg2 c5 13.b5 0–0 14.Nbc3 Qc7 15.0–0+= Rfe8 16.Ra2 Qb7 17.a5 Nc8 18.Rfa1 Qg2 19.Kg2 Ra8 20.Nd5+/– Re7?? 21.Ne7+– Ne7 22.Nc3 Nc8 23.Nd5 Kf8 24.ab6 Ndb6 25.Nb6 Nb6 26.Ra7 Ra7 27.Ra7 Ke8 28.Bc3 Nd7 29.Ba5 Ke7 30.b6 Ke6 31.Rd7! Kd7 32.b7 (32.b7 d5 33.cd5+–) 1–0. zoom888 – ken2, Live Game Caissa's Web, 2006.

5.c4 Ne7 6.d4 0–0 7.Nf3=+ Nbc6 8.de5= de5 9.0–0 e4 10.Bg7 ef3? 11.Bf8+/– fg2 12.Kg2 Qf8 13.b5 Ne5 14.Qd4 f6 15.Rd1 Be6 16.Qe4 c6 17.bc6 bc6 18.f4=+ Bf5 19.Qd4 Bc2 20.fe5 Nf5 21.Qc3 Bd1 22.e4 Nh6 23.Nd2 Bg4 24.ef6 Be6 25.e5 Qc5 26.h3 Nf7 27.Re1 Rd8 28.Nf3 a5 29.Rc1 Bf5–+ (29...Bf5 30.Re1 Rd3–+) 0–1. Woschkat,Karl_Heinz – Steffelmaier,Max, CiF, 1992.

5.d3 Nc6 6.b5 Nce7 7.c4 Nf6 8.e3 0–0 9.Ne2 a6 10.a4 c6 11.bc6 Nc6 12.Nbc3 Be6 13.Nd5 Ne7 14.Ne7 Qe7= 15.Ba3 Rab8 16.Nc3 Rfd8 17.0–0 Qd7 18.e4 b6 19.Bb4 Rb7 20.Qd2 Rdb8 21.f4 ef4 22.Qf4 Ng4 23.Qd2 a5 24.Ba3 Bd4 25.Kh1 Ne3 26.Nb5 Nf1 27.Rf1 Be5 28.Rb1 Bh3 29.d4 Bg2 30.Qg2 Bg7=+ 31.Bd6 Rc8–/+ 32.c5 bc5 33.dc5 Qc6 34.Re1 Rd7 35.Qd2?? Qc5!–+ 36.Rd1 Qc2 37.Qd5 Qa4 38.e5 Qc4 39.Na3 Qd5 40.Rd5 Be5! 41.Re5 Rd6 (41...Rd6 42.Kg2 a4–+) 0–1. Nivala,T (2225) – Kanko,I (2215), TCh–FIN, 2008.

5.d3 f5 6.Nf3 Nf6 7.c4 0–0 8.0–0 c6 9.Nbd2 h6 10.c5 e4 11.de4 fe4 12.Nh4 g5 13.Ng6 Re8 14.cd6 Qd6=+ 15.Nc4 Qd1 16.Rad1 Nbd7 17.Nd6+/– Re6 18.Nf5 Nb6 19.Nge7 Kf7 20.Nc8 Nc8 21.Ng7 Kg7 22.Bh3 Re7 23.f4+– g4 24.Bg4 Nb6 25.Bf6 Kf6 26.Rd6 Kg7 27.f5 Re5 28.Bh5 Rf8 29.f6 Kh8 30.Bg6 Nd5 31.Rd7 Nf6 32.Rb7 a5 33.a3 ab4 34.ab4 Re6 35.Bf7 Rd6+/– 36.Bb3 Ra8 37.Rf7 Nd5 38.Bd5 cd5 39.R1f6 Rad8 40.Rd6 Rd6 41.Re7 Rb6 42.Rd7 Rb5 43.Kf2 Kg8 44.Ke3 Kf8 45.h4 h5 46.Rh7 Kg8 47.Rh5?? d4= 48.Ke4 Rh5 49.Kd4 Kf7 50.e4 Ke6 51.Kc4 Kd6 52.Kd4–/+ Rh8 53.e5 Kc6 54.Ke4–/+ Kd7 55.Kf5 Rf8–+ 56.Kg6 Rg8 57.Kf7 Rg3–+ 58.h5 Rf3 59.Kg7 Ke6?? 60.h6= Rg3 61.Kf8 Rh3 62.Kg7 Ke5 63.h7 ˝–˝. Kuchkin,Maksim (1985) – Gingold,Anton (2075), Moscow Petrosian mem U18, 2007.

5.d3 Nf6 6.Nd2 0–0 7.Ngf3 Nbd7 8.0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5 7.d3 Nbd7 8.Nbd2).

5.d4 ed4 6.Bd4 Bd4 7.Qd4 Qf6 =.

5.e3 Ne7 6.d4 0–0 7.Ne2 Nbc6 8.b5 Na5 9.Nd2 Be6 10.de5 de5 11.0–0 f5 12.a4 c6 13.Qe1 Qb6 14.Ba3 Rf7 15.Rb1 e4 16.Nf4 Ba2–/+ 17.Be7 Bb1–+ 18.Nb1 Re7 19.Qd2 Rd8 (19...Rd8 20.Qe2 cb5 21.ab5 Qc5–+; 19...cb5 20.Nd5 Rd7 21.Nb6 Rd2 22.Na8 Rc2 23.Na3–/+) 0–1. Hollyoak,CB – Barnsley,Anthony R, corr, 1972.

5.e3 Ne7 6.Ne2 0–0 7.0–0 c6 8.c4 Be6 9.d3 Nd7 10.Nd2 f5 11.Qc2 g5 12.d4 e4 13.d5 cd5 14.Bg7= Kg7 15.Qb2 Kg8 16.Nd4 Bf7 17.f3 ef3 18.N2f3= h6 19.cd5 Bd5 20.Nd2 Rc8 21.Bd5 Nd5 22.Qb3 N7f6+= 23.Nf5 Rc3 24.Qb1 Qe8 25.e4+/– Qh5? 26.ed5 Ng4 27.Nh6 Qh6 28.Rf8 Qf8? 29.Qg6 Qg7 30.Qe6 Kh8 31.Qg4 Rg3 32.hg3 Qa1 33.Nf1 Qa2 34.Qh5 Kg7 35.Qg5 Kf7 36.Qf5 Kg8 37.Qg6 Kh8 38.Qd6 (38.Qd6 Qa1 39.Qb8 Kg7 40.Qb7 Kf8 41.Qc8 Ke7 42.Qe6 Kd8 43.Qd6 Kc8 44.Kf2+–) 1–0. Huebner,Robert – Asplund,Lennart, Jerusalem, 1967.

5.e3 Ne7 6.Ne2 0–0 7.0–0 f5 8.d3 c6 9.c4 Be6 10.Kh1 d5 11.c5 Nd7 12.d4 e4 13.Nf4 Bf7 14.h4 h6 15.Kh2 g5 16.hg5= hg5 17.Nh3 Bf6 18.Rh1 Kg7 19.Kg1 Rh8 20.Nd2 Bh5 21.Qb3 Rh6 22.f4 ef3–/+ 23.Nf3 Ng6 24.Nf2=+ Qc7 25.Qd3? Bf3–+ 26.Rh6 Kh6 27.Qf5 Bh5?? 28.Qh3= Kg7 29.Qh5 Qg3= 30.Qg4 Qg4 31.Ng4 Nh4 32.Bh3 Nf3 33.Kf2 Rh8 34.Bg2 Nh4 35.Re1 Re8 36.Bh1= Nf5 37.b5 Kg6 38.a4? Re7 39.a5? Nc5–/+ 40.dc5 Bb2 41.Re2 Bc3 42.e4? Bd4–+ 43.Ke1 Ng3 44.Rh2 Nh1 45.Rh6 Kg7 46.Rh1 Re4 47.Kd2 Rg4 (47...Rg4 48.a6 ba6 49.bc6 Be5–+) 0–1. Furman,Bartosz – Kumor,Lukasz (2040), Poland–chT2 U18, 2004.

5.e3 Ne7 6.Ne2 Nbc6 7.b5 Na5 8.0–0 Nc4 9.Bc3 Bd7 10.d3 Nb6 11.a4 Qc8 12.e4 Bh3 13.Nd2 Bg2 14.Kg2 a6 15.Nf3 ab5 16.ab5 d5 (better is 16...0–0!?=) 17.Be5 Be5 18.Ne5 de4 1–0. usingprogram (2005) – dothienhuong, internet, 2013.

5.Nf3 Nf6 6.0–0 0–0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.g3 0–0 5.Bg2 d6 6.0–0 e5).

5.Nf3 Nf6 6.d3 0–0 7.Nbd2 Re8 8.0–0 Be6 9.c4 Nc6 10.a3 a6 11.Ng5 Qd7 12.Re1 Bh6 13.Ne6+= Re6 14.Bh3+/– Rae8 15.Be6+– Qe6 16.Nf3 d5 17.cd5 Qd5 18.Qc2 Nd7 19.e4 Qe6 20.Bc1 Bc1+/– 21.Rac1 Qg4 22.Kg2 h5 23.h3 Qe6 24.Qb2 Qf6 25.Rc3 Rc8 26.Rec1 g5 27.Nh2 h4 28.Ng4 Qe6 29.Qd2 f6 30.Nh6 Kg7 31.Nf5 Kg6 32.gh4 Rh8 33.hg5 Nd4 34.Qe3 Nf5 35.ef5 Qf5 36.gf6 Nf6 37.Rc5 Rh5 38.Kh2 Ng4–+ (38...Ng4 39.Kg1 Ne3 40.Rc6 bc6 41.Rc6 Kf7 42.Rc7 Ke6–+) 0–1. coloplayah (2170) – cnita (1920), net–chess.com, 2006.

5.f4 Nc6 6.Bc6 bc6 7.fe5 =.

5.f4 Nd7 6.Nf3 Qe7 7.0–0 Rb8 (7...Ngf6 8.fe5 de5 9.Nc3+=) 8.Nc3 Ngf6 9.fe5 Ne5 10.Ne5 de5 11.Qe1 Qb4 12.Rb1 Qe7 (better is 12...0–0!?–/+) 13.Qf2+= a6 (13...b6!?+=) 14.Qa7+= (14.Qa7 Nd7 15.Nd5+/–) 1–0. Macedo,A Soares De (1865) – Marques,D Geverson Lop, 15th IRT da Academia Potiguar de Xadrez, 2015.

5.f4 Ne7 6.fe5 de5 7.Nf3 Nbc6 8.a3 0–0 9.e4 Rb8 10.c3 Be6 11.Ng5 Bd7 12.0–0= h6 13.Nf3 Qc8 14.Rf2 Bg4 15.Qf1 g5 16.d3 f5 17.h3 Bh5 18.ef5 Nf5= 19.g4 Ne3 20.Qe2 Ng2 21.Rg2 Bg6=+ 22.Nbd2 Qd8 23.Ne4= Qe7 24.a4 Rf4= 25.Bc1 Rf7 26.b5 Nd8 27.Ba3 Qe8 28.Rf2 Ne6 29.Kh2 Nf4 30.Qc2 Rd8 31.Rd1 b6 32.Ng1? Rfd7 33.d4 ed4–+ 34.cd4? Qe4 (35.Qb3 Kh7–+) 0–1. Murray,D – Eynon,David, Glasgow op, 1995.

3.h3 Nc6

4.b5 Nb4?? 5.e4+/– c5 6.a3+– Qa5 7.Nc3 a6? 8.ab4 Qb4 9.Qb1 Nf6 10.Ra4 Qa4 11.Na4 Bd7 12.Nb6 Ra7 13.Nd7 Nd7 14.f4! ef4 15.ba6 ba6 16.Ne2 Ne5 17.Be5 de5 18.Qb8 (18.Qb8 Kd7 19.Qa7 Ke8 20.Nc3+–) 1–0. pereira – bertil, internet, 2009.

4.b5 Na5

5.e3 c6 6.Nc3 Nf6 7.Be2 cb5 8.Bb5= Bd7 9.Qe2 a6 10.Bd7 Nd7 11.Nf3 Be7 12.0–0 0–0 13.Nd5 Nc5 14.a4+= f6 15.d4 Ne4? 16.Qd3+– f5 17.de5 de5? 18.Ne7 Qe7 19.Qd5 Rf7 20.Qa5 g6 21.Ne5 Rg7 22.Qd5 Kf8 23.Ba3 (23.Ba3 Qa3 24.Ra3+–) 1–0. pierre – jozo, internet, 2008.

5.e3 Bd7 6.Nf3 Nf6 7.Nc3 Be7 8.Bd3 0–0 9.0–0. marre – shkab, internet live, 2010.

5.e3 Be6 6.d4 Nc4 7.Bc4 Bc4 8.de5 Bb5 9.ed6 cd6 10.Nf3 =.

5.e3 Nf6 6.Nf3 c6 7.bc6 bc6 8.Nc3 Nc4?? 9.Bc4+– Be7 10.0–0 Rb8 11.Rb1 d5 12.Bb3 e4 13.Nd4 c5 14.Nc6 (14.Nc6 Qd6 15.Nb8+–) 1–0. pierre – pequd, internet, 2009.

4.b5 Nd4

5.e3 Ne6 =+.

5.Bd4 ed4

6.Nf3 c5 7.bc6 bc6 8.Nd4 c5 9.Nf3 Bb7 10.Nc3 Nf6 11.e4 Be7 12.Bb5 Nd7 13.0–0 0–0 14.Rb1 Ne5 15.Nd5 Bd5 16.ed5 Qa5 17.Ne5 Qa2?? 18.Nd7+– Rfd8 19.Bc6 (19.Bc6 Rac8 20.Re1+–) 1–0. pierre – stanko, internet, 2008.

6.Nf3 Bd7 7.Nd4+/– d5 8.Nc3 Bc5 9.e3 Nf6 10.Qf3 c6 11.Bd3 Bd4 12.ed4 Qe7 13.Be2 cb5 14.0–0 b4 15.Nd5 Nd5 16.Qd5 Bc6 17.Qf5 0–0 18.Rfe1 Qd6 19.Bd3 g6 20.Qe5 Qd7 21.Qc5 a5 22.Re7+– Qc8 23.d5 Bd7 24.Qb6 Ra6 25.Ba6 ba6 26.Qa5 Re8 27.Qb4 Re7 28.Qe7 Bb5 29.d6 a5 30.Qc7 Qa8 31.Rb1 Bc6 32.Rb8 (32.Rb8 Qb8 33.Qb8 Kg7 34.Qc8+–) 1–0. pereira – equipo, internet, 2009.

6.Nf3 Qf6 7.c3 dc3 8.Nc3 Be6 =.

6.Nf3 Qf6 7.c3 dc3 8.Nc3 Ne7 9.e3 Be6 10.Bd3 Nd5 11.Nd5 Bd5 12.Rc1 Rc8 13.Nd4 Be7 14.0–0 Qg5 15.e4 Be6 16.f4 Qg3 17.Rf3+/– Qh4 18.Qa4 0–0 19.Qa7 b6 20.Ne6 fe6 21.Rc7 Rc7 22.Qc7 Bf6? 23.Qd6 Qe1 24.Kh2 Qd2 25.e5 Bd8 26.Bh7! (26.Bh7 Kh7 27.Qd2+–) 1–0. pierre – sarihanm, internet, 2008.

6.Nf3 Qf6 7.c3 dc3 8.Nc3 g6?? 9.Nd5+– Qd8 10.Rc1 c5 11.bc6 bc6 12.Rc6 Bb7?? 13.Rc7 Bc8 14.Qc2 Rb8 15.Nd4 Bg7 16.Nc6 Bf5 17.e4 Qh4 18.Nb8 Be4 19.Rc8 (19.Rc8 Qd8 20.Bb5 Kf8 21.Rd8#) 1–0. pierre – mgebra, internet, 2008.

6.Nf3 g6 7.Nd4+= Bg7 8.e3 c5 9.bc6+/– bc6 10.Nc6 Qb6 11.Nd4 Bd4 12.ed4 Qd4 13.Bb5 Bd7 14.Nc3 Rb8 15.Qe2 Ne7 16.0–0+– Bb5 17.Nb5 (17.Nb5 Qe5 18.Qe5 de5 19.Na7+–) 1–0. pierre – tawchab, internet live, 2010.

4.b5 Nce7

5.Nc3 d5 6.Nf3 Qd6 7.e3 =.

5.Nc3 Bd7 6.e4= Ng6 7.Nf3 Be7 8.Bc4 Nf6 9.0–0 0–0 10.d4 Qc8 11.de5 Ne5 12.Ne5 de5= 13.Nd5 Nd5 14.ed5 Bd6 15.Re1 f6 16.Bd3 Bh3? 17.gh3+– e4 18.Re4 Qh3 19.Qg4 Qh2 20.Kf1 f5?? 21.Qg7# 1–0. pierre – Arii, internet, 2008.

5.e3 Be6 6.Nf3 =.

5.e3 Nf6 6.Nf3 b6 7.Be2 a6 8.0–0 g6 9.d4 e4= 10.Nfd2 d5 11.f3 Bg7 12.c4 ab5 13.cd5 Qd5 14.Nc3 Qc6?? 15.a3 0–0 16.Bb5+/– Qe6 17.fe4 c6 18.e5 Nfd5 19.Bc4 b5 20.Bb3 Nf5? 21.Nde4?? Rd8?? 22.Ng5 Qe7 23.Nd5 cd5 24.Nf7 Kf7? 25.g4 Ke8 26.gf5 Bf5 27.a4 ba4 28.Ba4+/– Kf7 29.Ba3 31.Rf3+/– Qe4 32.Bc2 Qh4 33.Bf5 gf5 34.Rf5 Kg8 35.Qg4 Qg4 36.hg4 Bf8 37.Rf3+= Ba3? 38.Rfa3+– Rac8 39.Ra4 Rf8 40.Kg2 Rc2 41.Kg3 Rcf2 42.Ra8 R2f3 43.Kh4 R3f4 44.Rf8 Kf8 45.Rd1 h6 46.Kg3 Re4 47.Kf3 Kf7 48.Rd3 Ke6 49.Kg3 Kf7 50.Rf3+– Kg7 51.Rf4 Re3 52.Rf3 Re4+= 53.Rf4 Re3 54.Kh4 Re2 55.Rf3 Rd2 56.Rf4 Rh2?? 57.Kg3+– Rd2 58.Kh4 Rh2 59.Kg3 Rd2 60.Kf3 Rd3 61.Ke2 Rh3 62.Rf6 Rg3 63.Rd6 Rg4 64.Rd5 h5 65.Rd7 Kf8 66.Kf3 Ke8 67.e6 Rg6 68.d5 h4? 69.Rh7 Rg5 70.d6 Rf5 71.Kg4 Rf1 72.Rh8 Rf8 73.d7 (73.d7 Kd8 74.Rf8 Kc7 75.d8Q Kc6 76.Qd7 Kc5 77.Rc8 Kb6 78.e7 h3 79.e8Q h2 80.Qd6 Ka5 81.Ra8) 1–0. gtate (2020) – ivos (2025), net–chess.com, 2006.

5.e4 =.

3.h3 Be6

4.Nf3 Nd7 5.d4 h6 6.e4 ed4 7.Nd4 Qe7 8.Nc3 a6 9.Be2 Ngf6 10.0–0 Nb6 11.a4 Bc4 12.Re1 Be2 13.Qe2 0–0–0 14.a5 Nbd7 15.b5 ab5 16.Ncb5+– Nc5?? 17.Na7 Kb8 18.a6 Ka7 19.ab7 Kb7 20.Qb5 (20.Qb5 Kc8 21.Ra8#) 1–0. pierre – cotelov, internet, 2008.

4.Nf3 Be7

5.Nc3 Nd7 6.e4 Ngf6 7.Bd3 0–0 8.Ng5 h6 9.Ne6= fe6 10.0–0 c6 11.a3 b5 12.Qf3 Nb6 13.a4= Nc4 14.Bc4+= bc4 15.Qe2 d5 16.ed5 ed5 17.b5 e4 18.bc6 Qb6 19.Rfb1 Qc6 20.Nd1 Bc5 21.Ne3 Nh5?? 22.Qh5+– Be3 23.de3 c3 24.Ba3 Rf7 25.Rb3 Qf6 26.Rf1 d4 27.Qd5 Rd8 28.Qe4 d3 29.cd3 c2 30.Qc4 (30.Qc4 a6 31.Qc2+–) 1–0. pierre – alexis compton, internet, 2008.

5.Nc3 Nf6 6.Ng5 Bd7 7.e3 h6 8.Nge4 a6 9.Bc4 Ne4 10.Ne4 b5 11.Bd5 c6 12.Bb3 0–0 13.Qh5 Qe8 14.f4 Bf5 15.Qf5 Nd7 16.fe5 g6 17.Qg6 Kh8 18.ed6 Bf6 19.Qh6 Kg8 20.Bf6 Nf6 21.Nf6 1–0. pierre – ARODV8, internet, 2008.

4.Nf3 Nf6

5.Nc3 Nc6 6.b5= Ne7 7.e3 Ned5 8.Nd5 Bd5 9.c4 Bf3 10.Qf3+= Qc8 11.Bd3 Be7 12.Bf5+/– Qb8 13.d4 ed4 14.Bd4 0–0 15.0–0 a6 16.a4 ab5 17.ab5 b6 18.Ra6+– Ra6 19.ba6 Qa7 20.Qb7 Qb7?? 21.ab7 Rb8 22.Ra1 Rb7 23.Ra8 Bf8 24.Bc8 c5 25.Bf6 Rc7 26.Bd8 (26.Bd8 Re7 27.Be7 Be7 28.Be6 Bf8 29.Bd5+–) 1–0. pierre – EdPa, internet, 2008.

5.Nc3 Be7 6.Ng5 =+.

5.d4 e4–/+ 6.Ng5 d5 7.Ne6=+ fe6 8.Qd2 Bd6 9.c4 c6 10.g3 0–0 11.Bg2 Qe7 12.a3 Nbd7 13.0–0 Rf7 14.Nc3 Raf8 15.Rac1= Qd8 16.Na4 Qb8 17.Nc5 Nc5 18.bc5 Bc7 19.Qe3 Qc8 20.Rc2 Qd7 21.Qb3 Bb8 22.Rcc1 Re8 23.f4 ef3 24.Rf3 Ref8 25.Rcf1 Nh5 26.Rf7 Rf7 27.cd5 ed5 28.Rf3 Rf3 29.Bf3 Ng3 30.e4 Qh3–+ 31.e5 Qf1 32.Kh2 Qf2 33.Kh3 Nf5 34.Bd5 cd5 35.Qd5 Kf8 36.Qd8 Kf7 37.Qd7 Kg6 38.Qe6? Kh5 39.Qf7 g6 40.Qh7 Nh6 41.Qh8 Qb2 42.Qb8 Qc3 43.Kg2 Qd2 (43...Qd2 44.Kf3 Qd4 45.Qb7 Qc5–+) 0–1. b4_player – bendelamat, gamecolony.com, 2006.

5.d4 e4 6.Ng5 Qd7 7.Nc3 d5 8.Ne6 Qe6 9.a3 Be7 10.e3 c6 11.Be2 0–0 12.0–0 Nbd7 13.Na4 h6 14.Nc5= Bc5 15.bc5 Nh7 16.Bc3 f5 17.a4 Qg6 18.Rb1 b6 19.cb6 ab6 20.Bb4 Rf7 21.Bh5+/– Qf6 22.Bf7 Qf7 23.Ra1 g5 24.a5+– b5 25.f4 Qg6 26.fg5 Ng5 27.Kh2 Kh7 28.Qd2 Nf6 29.Qf2 Rg8 30.a6 Ra8 31.a7 Qf7 32.Qf5 (32.Qf5 Kg7 33.Qe5+–) 1–0. pereira – gpmd, internet, 2009.

5.d4 e4–/+ 6.Ng5 Bf5!? 7.g4 Bd7 –+.

3.h3 Be7

4.d4 Nc6 5.Nf3 e4–/+ 6.d5 Bf6 7.Nc3 ef3 8.dc6 bc6 9.ef3 Ne7 10.Bc4 d5–/+ 11.Bd3 0–0 12.0–0 Nf5 13.Rb1 Re8 14.Re1 Nd6 15.Re8 Ne8 16.Qd2 Bg5 17.f4+= Bf6 18.Ne2 Nd6 19.Be5 Bd7 20.Re1 Be5 21.fe5+/– Nc4?? 22.Bc4+– dc4 23.Rd1 1–0. pierre – vapenfor, internet, 2009.

4.d4 e4 5.e3 d5 6.a3 Bf5 7.c4 c6 8.Ne2 Nf6 9.g4 Bd7 10.g5 Ng8 11.Nbc3 Be6 12.Ne4+= f6? 13.Nf4+– de4 14.Ne6 Qd6 15.d5 cd5 16.cd5 Nd7 17.Ng7 Kf7 18.Nf5 Nb6 19.Qh5 (19...Kf8 20.Nd6 Bd6 21.gf6+–) 1–0. pierre – kartal12, internet, 2008.

4.d4 Bf6 5.de5= Be5 6.Be5 de5 7.Qd8 Kd8 8.Nf3 e4 9.Ng5+/– f5?? 10.Nf7+– (10…Ke7 11.Nh8+–) 1–0. pierre – asarex, internet, 2009.

4.d4 ed4

5.Nf3 c5 6.e3 Bf6 7.ed4=+ cd4 8.Bb5= Nc6 9.Bd4 Bd7 10.0–0+= Bd4 11.Nd4 Nd4 12.Bd7+= Qd7 13.Qd4+/– Nf6 14.Re1 Kd8 15.Nd2 Rc8 16.Nc4 d5 17.Ne5+– (17…Qc7 18.Rad1+–) 1–0. mtr – styckekok, internet, 2009.

5.Nf3 Nc6 6.b5 Ne5 7.Bd4 Nf3 8.ef3 Nf6 9.Bd3 0–0 10.0–0 Be6 11.Nc3 d5 12.f4 Qd6 13.f5 Bd7 14.Qf3 Rfe8 15.Rae1 Rad8 16.Re2 Qb4 17.Bf6 Bf6 18.Nd5 Qd6 19.Re8 Re8 20.Nf6 Qf6 21.Qb7 Bf5 22.Qc7 Bd3 23.cd3 Qe5 24.Qe5 Re5 25.Rc1 g6 26.Rc7 Rb5 27.Ra7 Rd5 28.Ra3 Kg7 29.Kf1 h5 30.Rb3 Rd6 31.a4 Rc6 32.a5 Ra6 33.Rb5 Ra7 34.Ke2 Kf6 35.d4 Ke6 36.Kd3 Kd6 37.Kc4 Kc7 38.Kc5 Kd7 39.Kb6 Ra8 40.Kb7 Rc8 41.Rd5 (41…Ke6 42.Kc8 Kd5 43.a6) 1–0. pierre – Charl Fourie, internet, 2008.

5.Nf3 d3?? 6.Bg7+– Bf6 7.Bh8 Bh8 8.c3 de2 9.Be2 Ne7 10.0–0 Be6 11.Ng5 Qd7 12.b5 h6 13.Ne6 Qe6 14.Re1 Qg6 15.Bf3 c6 16.Bh5 Qf6 17.Re3 cb5 18.Nd2 Nd7 19.Ne4 Qe5 20.Nd6 (20…Kd8 21.Nf7 Kc7 22.Re5 Be5 23.Bg4+–) 1–0. pereira – tjhgi, internet, 2009.

5.Nf3 d5 6.Qd4 f6 7.b5 Bf5 8.Nc3 Be4? 9.Ne4+– de4 10.Qe4 Qd7?? 11.Qb7 1–0. pereira – vxri, internet, 2009.

3.h3 f5

4.Nc3 c6 5.Nf3 e4 6.Nd4 Be7 7.g4= g6 8.gf5 Bf5 9.Nf5+/– gf5 10.Ne4! fe4 11.Bh8+– Bf6 12.Rg1 Kf7 13.Bf6 Qf6 14.Rb1 Nd7 15.b5 c5 16.Bg2 (16…Qh4 17.c4+–) 1–0. pierre – tmp123, internet, 2008.

4.Nc3 Nf6=+

5.a3 Nc6 6.b5 Nd4 7.e3= Ne6 8.d4 Ne4 9.de5+/– N6c5 10.Nf3 Nc3 11.Bc3 d5 12.Bb4 Ne6 13.Bf8 Nf8 14.c4 Ne6? 15.cd5+– Nc5 16.Bc4 Ne4 17.0–0 c6 18.bc6 bc6 19.d6 Bd7 20.e6 Nc5 21.e7 Qb8 22.Ne5 h5 23.Bf7# 1–0. marekt – jody3, chessworld.net, 2008.

5.a3 Be6

6.Nf3 c6 7.e3 Nbd7 8.Ng5 Bg8 9.Be2 g6 10.0–0 h6 11.Nf3 d5 12.d4 e4 13.Ne5 Ne5 14.de5 Nd7 15.e6 Nf6? 16.Nd5!+/– cd5 17.Bb5 Ke7 18.Bf6 Kf6 19.Qd4 Ke7 20.Qh8+– Be6 21.Rac1 a6+/– 22.Be2 b5 23.Rfd1+– Kf7 24.c4! bc4 25.Bc4! Bg7 26.Qd8 Rd8 27.Ba6 d4 28.Rc7 Kf8 29.Bc4 Bc4 30.Rc4 d3 31.b5 Bb2 32.a4 d2 33.Kf1 Rd3 34.Ke2 Bc1 35.b6 Rb3 36.Rc6 Ke8 37.a5 g5 38.a6 Kd7 39.a7 Ra3 40.Rcc1 (40…Ke7 41.Ra1+–) 1–0. pereira – vdre, internet, 2009.

6.Nf3 Nc6 7.e3 Be7 8.b5 Na5 9.d4 b6 10.de5 Ne4? 11.Nd4+– Bd7?? 12.e6 Bc8 13.Nf5 Nc3 14.Ng7 Kf8 15.Qh5 Kg7 16.Bc3 Bf6 17.Qg5 Kf8 18.Bf6 (18…Be6 19.Qg7 Ke8 20.Qh8 Kd7 21.Qh7 Ke8 22.Qh8 Kd7 23.Qg7 Ke8 24.Bd3 Qf6 25.Qf6+–) 1–0. pierre – tbcm, internet, 2010.

6.Nf3 Nc6 7.e3 g6 8.b5 Ne7 9.Ng5 Bd7 10.Bc4 d5 11.Bb3 c6 12.Ne2 Bg7 13.Be5+/– h6 14.Nf3 0–0 15.bc6 bc6 16.0–0 Kh7 17.d3 c5 18.Qd2 Nc6 19.Bd6+– Re8 20.Bc5 Be6 21.Ned4 Nd4 22.Bd4 Bd7 23.Rab1 Bc6 24.Ne5 Qc7 25.Nc6 Qc6 26.Qa5 Red8 27.Ba4 Qd6 28.Rb7 Rd7 29.Bd7 Nd7 30.Bg7 Kg7 31.e4 fe4 32.de4 Qc6 33.Rc7 (33...Qe6 34.Qb5+–) 1–0. pierre – gekozi, internet, 2009.

6.Nf3 Be7 7.d4 e4 8.d5 Bf7 9.Ng5 0–0 10.e3 c6 11.Bc4+/– cd5 12.Nf7 Rf7 13.Nd5 Nd5? 14.Qd5 Qe8 15.Qf5 Nc6 16.0–0 Bf6 17.Bf6 gf6 18.Qf6 Ne5 19.Bf7 Qf7 20.Qd6 Ng6 21.f3 ef3 22.Rf3 Qg7 23.Raf1 (23…Qe5 24.Qd7+–) 1–0. pierre – lyxikon, internet, 2009.

6.Nf3 Be7 7.d4 e4 8.d5 Bf7 9.Ng5 0–0 10.e3 Nbd7 11.Be2 h6 12.Ne6 Be6= 13.de6 Ne5 14.Nd5 Kh7 15.0–0 c6 16.Nf4 Qc7 17.Rb1 Rad8 18.h4 d5 19.Rc1 Ng6 20.Ng6 Kg6 21.h5 Kh7 22.Rb1 Qd6 23.Qd4 a6 24.Qe5 c5 25.Qf5+/– Kh8 26.Be5 Qc6 27.b5 Qc8 28.ba6 ba6 29.Rb6 Ne8? 30.Qg6+– Bf6?? 31.e7! Nc7 32.Rf6 Rf6 33.Bf6 Rg8 34.Qh6# 1–0. pierre – juramae, internet, 2008.

6.Nf3 h6 7.d4 e4 8.d5 Nd5 9.Nd5 ef3 10.ef3 c6 11.Nf4 Bf7 12.Bd3 Qg5 13.Qe2+– Be7?? 14.h4 Qf4 15.g3 (15...Qe5 16.Be5 de5 17.Qe5+– (< 17.Bf5 0–0+–)) 1–0. pierre – ismet, internet, 2008.

3.h3 Bf5

4.Nc3 Nc6 5.e4 Bg6 6.b5 Nd4 7.Nf3 Nf3 8.Qf3 Nf6 9.Bc4 Be7 10.0–0 0–0 11.Rfe1 Bh5 12.Qg3 h6 13.a4 Bg6 14.Qg6+/– d5 15.Bd5 Nd5 16.Qg3 Nf4 17.Nd5 Bh4 18.Qf3 Qg5 19.g3 Nh3 20.Kh2 Nf2 21.Qf2 f5 22.gh4 Qh5 23.ef5 c6 24.Ne7 Kh7 25.Re5 Rae8 26.Rae1 Re7 27.Re7 Rf5 28.Qf5! Qf5 29.Rg7 Kh8 30.Re8 (30…Qf8 31.Rf8#) 1–0. pierre – xmarshall, internet, 2008.

4.Nc3 Qf6 5.e4= Be6 6.Nf3 Nc6 7.b5 Nd4 8.Nd4 ed4 9.Ne2 Bc4 10.Nd4+/– Bf1 11.Kf1 Qe7 12.Nf5+– Qg5 13.h4 Qf4? 14.f3 Nf6 15.g3 (15…Qe5 16.Be5 de5 17.Ke1+–) 1–0. marre – besarabien, internet live, 2010.

4.Nc3 Nf6

5.Nf3 Nc6N 6.b5= Nb4 7.d3 e4 8.g4 ef3 9.gf5 Qe7 10.a3 Nbd5 11.Nd5+/– Nd5 12.e4 f6 13.Qf3 0–0–0 14.Bg2 g6?? 15.fg6+– hg6 16.0–0 Nb6 17.Bf6 Qe6 18.Bh8 1–0. pereira – tahsk, internet, 2009.

5.Nf3 Nbd7N 6.a3 Nb6 7.e3 Be7 8.Bd3 Be6 9.Ng5 Bc4 10.0–0 h6 11.Nf3= 0–0 12.Qe2 Be6 13.Rfe1 Qd7 14.e4 Bh3 15.gh3+/– Qh3 16.Nh2 Nh5 17.Qg4 Qg4 18.Ng4 Nf4 19.Bb5 c6 20.Bf1+/– h5 21.Ne3 g5 22.Nf5 Rfe8 23.a4 Bf8 24.a5 Nd7 25.a6 b6 26.b5+– d5? 27.bc6 Nc5 28.ed5 e4 29.Bc4 Re5 30.Ng3 h4 31.Nce4 Ne4 32.Ne4 Rf5 33.c7 g4 34.d6 Bd6 35.Nd6 Nh3 36.Kh1 Nf2 37.Kg2 h3 38.Kg1 g3 39.Nf5 h2 40.Kg2 h1Q 41.Rh1 (41…Nh1 42.Rh1 Rc8 43.Rh8#) 1–0. marre – Nicy, internet, 2010.

5.Nf3 Be7 6.g4 Bg6 7.g5 Nh5 8.e3 f6 9.Nh4 fg5 10.Ng6+/– hg6 11.Bd3 Kf7 12.Qf3+– Bf6 13.Qb7 Nd7 14.Qd5 Kf8 15.Bg6 (15...Qe7 16.Qa8 Qd8 17.Qf3+–) 1–0. pierre – opponent, internet, 2008.

4.Nc3 h6

5.e3 Nf6 6.Qf3 Bc8 7.Bc4 c6 8.b5 d5 9.Be2 Bd6 10.bc6 =+.

5.e4 Be6 6.Nf3+= c6 7.Be2 Nf6 8.0–0 Be7 9.d4 0–0 10.Qd3 Na6 11.a3 Re8 12.de5+/– de5 13.Ne5 Qd3 14.Bd3 Bd6 15.Nf3 c5? 16.b5 Nc7 17.e5 c4 18.ed6 cd3 19.dc7 dc2 20.Rfc1 Bb3 21.Nd4 Bc4 22.Rc2 Rac8 23.Ne4 Rc7 24.Nd6 Rd8 25.Rc4 Rc4 26.Nc4 Rd5 27.Re1 Nd7 28.Re8 Kh7 29.Ne3 Rg5 30.Re7 Nf6 31.Rb7 Ne4 32.Rf7 Nd6 33.Ra7 Rd5 34.Nd5 (34…Nc8 35.Rd7 Nb6 36.Nb6 Kg6 37.Ne2 h5 38.Nf4 Kh6 39.Bg7 Kg5 40.Rd5 Kf4 41.Bh6 Ke4 42.f3#) 1–0. pierre – mr.noway, chesspark.com, 2008.

3.h3 Nf6

4.a3 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.h3).

4.c4 a5 5.b5 Nbd7 6.Nf3 g6 7.Nc3 Bg7 8.e3 0–0 9.Be2 Nc5 10.d4 ed4 11.ed4 Nfe4 12.Ne4 Ne4 13.0–0 a4 14.Qc2 Ng5 15.Rfe1 Bf5 16.Qd1 Re8 17.Ng5 Qg5 18.Bf3 Re1 19.Qe1 a3 20.Bc3 Be6 21.Qe4 Rb8 22.Qd3 d5 23.cd5 Bd5 24.h4 Qd8=+ 25.h5 Qd7 26.Re1 Rd8 27.Bd5 Qd5 28.Qe2 c5 29.bc6 bc6 30.Qa6 Qa2 31.Ra1 Qd5 32.Qa3 Qh5 33.Qe7 Rf8 34.Qe3 Qg4 35.Ra7 Rb8 36.g3 c5 (36...c5 37.dc5 Bc3 38.Qc3 Rb1 39.Kg2 Qe4 40.f3 Qe2 41.Kh3 f6 42.Ra8 Kg7 43.Ra7 Kh6–+) 0–1. wiking (1940) – Conde7 (2530), queenalice.com, 2009.

4.c4 a6 5.Nc3 c6 6.e3 g6 7.Nf3 e4 8.Ne4!+– Bg7 9.c5 d5? 10.Nd6 Kf8 11.Ng5 Be6 12.Bd3 b6 13.Bd4 b5 14.0–0 Nh5 15.Ne6 fe6 16.Qf3 Nf6 17.g4 h6 18.e4 de4 19.Be4 Ra7 20.Bg6 Kg8 21.Rae1 Nbd7 22.Re6 Nf8 23.Bf6 Bf6 24.Rf6 Rg7 25.Qb3 (25.Qb3 Ne6 26.Qe6 Rf7 27.Qf7#) 1–0. pereira – teabg, internet, 2009.

4.c4 c6 5.Nc3 6.b5 b6 7.Nf3 Be7 8.e3 0–0 9.Be2 Bd7 10.a4 c5 11.0–0 Be6 12.Ng5 h6 13.Ne6 fe6 14.Bf3 d5 15.cd5+/– ed5 16.d3 Ra7 17.Qb3+– Kh8 18.Nd5 Nd5 19.Bd5 Bf6 20.Bc3 Nd7 21.Be4 Rf7?? 22.Qf7 c4 23.dc4 Rc7 24.Rfd1 Qc8 25.Bf5 Nc5 26.Qg6 Qg8 27.Be5! Nd7 28.Bc7 Nf8 29.Qe8 Ba1 30.Ra1 g6 31.Be5 Kh7 32.Qe7 (32.Qe7 Qf7 33.Qf7#) 1–0. pierre – prasinos, internet, 2008.

4.c4 Nfd7 5.Nc3 Be7 6.Nf3 c5 7.b5 b6 8.Qb3 0–0 9.a4 Bb7=+ 10.e4 h6 11.Be2 Bg5 12.Ng5 Qg5 13.Bf3 Nf6 14.h4 Qg6 15.a5 ba5 16.h5 Qh7 17.Ra5 Nbd7 18.d3 Nb6 19.0–0+/– Rfd8 20.Rfa1 g6 21.Ra7+– Rab8 22.Qd1 g5 23.Qe2 Ra8?? 24.Rb7 Nbd7 25.Ra8 Ra8 26.Bg4 Rd8 27.Bd7 Rd7 28.Nd5 Nd5 29.Rd7 Nf4 30.Rd8 Kg7 31.Qf3 Kf6 32.b6 Qg7 33.b7 (33.b7 Qh8 34.Rh8 d5 35.b8Q Kg7 36.Qe5 f6 37.Qf6#) 1–0. marekt – arceye, chessworld.net, 2008.

4.c4 Ne4 5.g3 Qf6 6.Nf3+= (6.Rh2 Nc6 (6...Na6 7.d3 Ng5 8.Nc3 Nb4 9.Nd5 Nd5 10.cd5 Qh6) 7.d3 Ng5 8.Nc3 a5 9.Nd5 Qd8 10.h4 Ne6) 6...Nc6 (6...a5 7.d3 Ng5 8.Ng5 Qg5 9.Qa4 (9.b5 Nd7 10.Nc3 Nf6) 9...Nd7 (9...Nc6 10.Bg2 Bd7) 10.Nc3+= Qd8; 6...Na6 7.d3 Ng5 8.Ng5 Qg5 9.Bg2 Rb8 10.Nc3 Nb4) 7.d3 Ng5 8.Ng5 Qg5 9.b5 (9.Nc3 Nb4 10.Qa4 Nc6) 9...Ne7 (9...Nd4 10.Nc3+= Bf5) 10.Nc3 Bf5 (10...Nf5!?+/–; 10...f6+/–) 11.Bg2+– 0–0–0 (11...c6 12.0–0+–) 12.a4 g6 (12...d5 13.cd5 Kb8 14.a5+–) 13.a5 Bh6?? (better is 13...Kb8+–) 14.e4 Be6 15.Bc1 Qh5 16.Qh5 gh5 17.Bh6 Rhg8 18.Be3 Kb8 19.h4 f5 20.Bg5 Rde8 21.a6 b6 22.Bf3 Bf7 23.Be2 f4 24.gf4 ef4 25.Kd2 Ng6 26.Bh5 Ne5 27.Bf7 Nf7 28.Nd5 Ng5 29.hg5 Rg5 30.Rh7 Rg2 31.Rc7 Rf2 32.Kc3 f3 33.Rb7 Kc8 34.Ra7 Rg2 35.Nb6 Kb8 36.Rb7# 1–0. Trokenheim,Marek (2160) – Wolde,Daniel (1945), remoteschach.de, 2010.

4.c4 Be6 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.h3).

4.c4 Bf5 5.Nc3 Be7 6.g4 Bg6 7.g5 Ne4 8.Bg2= Nc3 9.Bc3 c6 10.Nf3 Bg5=+ 11.d4 e4 12.Ng5 Qg5 13.Rg1 d5 14.cd5 cd5 15.Bd2 Qf6–/+ 16.Qb3 Qd4 17.Bc3=+ Qc4 18.0–0–0 Qb3–/+ 19.ab3 Nd7 20.Rd5 Rc8 21.Kb2=+ Nb6 22.Re5= Kf8 23.Ra5+= a6 24.Rd1 f5 25.Rd6 Na8 26.Rd7 Rg8 27.Rb7 h6? 28.Ra7 Nb6 29.R7a6 Rb8 30.Bd4 Nd7 31.Rg6 Kf7 32.Rc6 g6 33.Ra7 Ke8 34.Rcc7 Rd8 35.Bf6! Nf6 36.Re7 Kf8 37.Rf7 Ke8 38.Rae7# 1–0. pierre – Rooking, internet, 2008.

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.h3).

4.Nf3 (--> 3.Nf3 Nf6 4.h3).

4.c4 b6

5.Nc3 Bb7 6.Nf3 Nbd7 7.e3 Be7 8.Be2 a6 9.d4 e4 10.Nd2 a5 11.b5+/– Qc8 12.Qc2 0–0 13.0–0 Re8 14.Nde4 d5 15.Nf6 Nf6 16.Nd5 Nd5 17.cd5 Bd5 18.Bd3 Bd6 19.e4 Bb7 20.e5 g6 21.ed6 cd6 22.Qb3 Qc6 23.bc6 (23.bc6 Ba6 24.Ba6 Ra6 25.d5+–) 1–0. pereira – kikzy, internet, 2009.

5.Nc3 Nbd7 6.e3 Be7 7.Qf3 0–0?? 8.Qa8+– c5 9.bc5 dc5 10.Qa7 h6 11.Nb5 Ne4 12.Nf3 Ndf6 13.d3 Ng5 14.Ne5 Bf5 15.Nc6 Qd5 16.Ne7 (16.Ne7 Kh7 17.cd5+–) 1–0. wiking – mp3, internet, 2009.

5.Nc3 Nbd7 6.Nf3 Be7 7.e3 Bb7 8.Be2 d5 9.cd5= Nd5 10.b5 0–0 11.0–0 Bf6 12.Ne4 Re8 13.Qc2 Nb4 14.Qc4 Nd5 15.a4 a6 16.Bd3 ab5= 17.ab5 Ne7? 18.Neg5+– Bd5 19.Ra8 Qa8 20.Bh7 Kh8 21.Qh4 Bg5 22.Ng5 Ng6 23.Bg6 Kg8 24.Bh7 Kf8 25.Bf5 Nf6 26.Ra1 Qd8 27.Qh8 Ke7 28.Ba3 c5 29.bc6 (29.bc6 Qd6 30.Qg7 Qa3 31.Ra3+–) 1–0. pierre – tunna, internet, 2008.

5.e3 Be7 6.Be2 0–0 7.d4 ed4 8.Qd4 Bb7 9.Nf3 =+.

4.c4 Nc6

5.a3 e4 6.d3 Ne5 7.Nd2 ed3 8.Ngf3 Nfd7 9.Qa4 Nf3 10.Nf3 =+.

5.b5 Nd4 6.Nc3 b6 7.e3= Nf5 8.Bd3 Be7? 9.Qf3+– g6?? 10.Qa8 0–0 11.Nf3 e4 12.Ne4 Ne4 13.Qe4 Be6 14.0–0 Qd7 15.Rac1 Nh4 16.Nh4 Bh3 17.gh3 Qh3 18.Qe7 (18.Qe7 Qe6 19.Qc7+–) 1–0. pierre – abba_kz, internet, 2008.

5.b5 Ne7 6.e3 a6 7.a4 ab5 8.cb5 Ned5 9.Bc4 Nb6 10.Bb3=+ Ne4 11.Qf3 d5 12.d3 Ng5 13.Qg3 Bb4 14.Bc3 Qd6?? 15.Qg5+– 0–0 16.Nf3 Bc3+/– 17.Nc3 Qb4 18.0–0?? Qc3= 19.Ba2 h6 20.Qe5+= Na4? 21.Bd5+– Qd3 22.Qd4 Qb5+= 23.Rfb1 Nb2?? 24.Ra8+– Rd8 25.Bf7! Kf8 26.Qd8 Qe8 1–0. gtate (1905) – octopus (1880), net–chess.com, 2004.

4.c4 d5

5.Qa4 Bd7=+ 6.b5 c6 7.cd5 Nd5 8.Nf3 cb5 9.Qe4 Be6 10.Ne5 Nc6 11.e3 a6 12.Nc6 bc6 13.Be2 Qg5 14.0–0 Be7 15.f4 Qh6 16.f5+/– Bd7 17.Nc3 Nf6 18.Qe5 Qg5?? 19.Ba3+– Nd5 20.Ne4 Qh4 21.f6! Nf6 22.Qe7# 1–0. pereira – hacbg, internet, 2009.

5.cd5 Nd5 6.a3 Qf6 7.e4= Nf4 8.Nc3 Be6 9.Nb5 Qe7?? 10.Be5+– Nd7 11.Bf4 Bf5 12.Qe2 Be4 13.Nc7 Kd8 14.Na8 Qf6 15.Bc7 Kc8 16.Rd1 Qe6 17.Rc1 Bc6 18.Qe6 fe6 19.Rc6 bc6 20.Ba6# 1–0. wiking – McFly, queenalice.com, 2009.

4.c4 Bd7

5.Nc3 a6 6.Nf3= b5 7.e4 Be7 8.cb5 ab5 9.Bb5 c6 10.Bc4 Qb6 11.a3+– 0–0 12.0–0 Kh8 13.Re1 Na6 14.d4 ed4 15.Nd4 Nc7 16.Nf5 Bf5 17.ef5 Rae8 18.Qc2 d5 19.Na4 (19.Na4 Qb7 20.Bd3+–) 1–0. pereira – rexunden, internet, 2009.

5.Nc3 g6 6.g4 Bh6 7.Nf3 e4? 8.Ne4!+/– Bg7 9.g5 Ne4 10.Bg7 Rg8 11.Bh6 c5 12.Qc2 Nf2 13.Kf2 cb4 14.Qe4 Be6 15.Qb7 Nd7 16.Nd4 a5 17.Bg2 Rb8 18.Qe4 Nc5 19.Qe3 Rb6 20.Ne6 fe6 21.d4 Nd7 22.Qe6 Qe7 23.Qg8 Nf8 24.Raf1 b3 25.Kg3 Kd7 26.Rf7 Qf7 27.Qf7 Kc8 28.Qf8 (28.Qf8 Kd7 29.Qg7 Kd8 30.Rf1 b2 31.Rf8#) 1–0. marekt – 3du4rd0, chessworld.net, 2008.

4.c4 Be7

5.Nc3 0–0 6.Nf3 Re8 7.a3 Nbd7 8.e3 =+.

5.d4 0–0 6.Nf3 =+.

5.e3 c6 6.Nc3 a5 7.b5= 0–0 8.Nf3 Qb6 9.Qc2 cb5 10.cb5 Bd7 11.Na4 Qc7?? 12.Qc7+– Rc8 13.Qb7 Na6 14.ba6 Rab8 15.Ne5! de5 16.Be5 Rb7 17.ab7 Rf8 18.Nc3 Bc6 19.b8Q Rb8 20.Bb8 Bb4 21.a3 Bc3 22.dc3 Ne4 23.Rb1 Nc3 24.Rc1 (24...h6 25.Rc3+–) 1–0. pereira – nvvv, internet, 2009.

5.e3 Nc6 6.b5=+ Na5 7.Qa4 c6 8.Bc3+= b6 9.bc6 0–0 10.Ba5 ba5 11.Nc3 Qc7? 12.Rb1+– Bf5 13.Rb7 Qc8?? 14.Re7 1–0. pereira – oppo, internet, 2009.

5.e3 Be6 6.Nc3 0–0 7.Nf3 Nbd7 8.Ng5 h6 9.Ne6= fe6 10.Bd3 c6 11.0–0 d5 12.a3 e4 13.Be2 a6 14.Qc2 b5 15.cd5 ed5 16.Qb3 Kh8 17.d4 Qc7 18.a4 Nb6=+ 19.Ra2 Nc4 20.Rfa1= Qb7 21.Kh1 Bd6 22.Bc1 Nh7 23.Kg1 Qf7 24.Nd1= Qb7 25.Nc3=+ Ng5 26.h4 Ne6 27.g3 Qf7–/+ 28.Bg4 Nc7 29.ab5 ab5–+ 30.Nd1 h5 31.Bh3 Qf3 32.Bg2 Qg4 33.Nc3 Bg3 34.fg3=+ Qg3 35.Ra8 Ra8 36.Ra8=+ Na8 37.Qd1 Nc7 38.Qh5+/– Kg8 39.Ne2 Qe1 40.Kh2 Qf2 41.Ng3 Qe1 42.Nf5 Qc1?? 43.Qg6 Ne8 44.Qe8 Kh7 45.Qf7 (45…Qg1 46.Kg1 Ne3 47.Qg7#) 1–0. pierre – opponent, internet, 2008.

5.e3 Bf5 6.Nc3 c6 7.Nf3 Nbd7 8.g4 Bg6 9.Nh4 d5 10.Ng6 hg6 11.g5 Ne4 12.cd5 Ng5 13.h4 e4 14.Bg2 Nf3 15.Bf3 ef3 16.Qf3 Qb6 17.Ne2 0–0–0? 18.dc6+– bc6 19.Bg7 Rhe8 20.Rc1 Kb7 21.Nd4 Bb4 22.Rc6 (22…Ka6 23.Rb6 Nb6 24.Qf7+–) 1–0. pierre – mahdovich2, chesspark.com, 2008.

5.e3 Bf5 6.d3 c6 7.d4 Nbd7 8.Nd2 Qb6 9.a3 c5 10.Qa4 ed4 11.ed4 =+.

5.e3 Bf5 6.Nf3 0–0 7.a3 Re8 8.d4 e4 9.Qc2 a5 10.d5 ab4 11.ab4 =+.

5.d4 ed4

6.b5 a6 7.Qd4 0–0 8.Nf3 d5 9.cd5 ab5 10.Nc3 b4 11.Nb5 c5 12.Qe5 Nbd7 13.Qg3 Nh5 14.Qc7 Bf6 15.Qd8 Rd8 16.Bf6 Nhf6 17.d6 Nb6 18.Nd2 Bd7 19.Nc7=+ Ra3 20.e4 Bc6 21.e5=+ Nfd7 22.f4 Ra4 23.Kf2 b3 24.Nb3 Rf4 25.Kg3 Re4 26.Bb5 Bb5 27.Nb5 Re5 28.Na5 Rg5 29.Kh2 c4 30.a4 Rb8 31.Rac1 Rc5 32.Rhd1 f5 33.h4 g6 34.Kg1 Kg7 35.Kh2 h6 36.Kh3 Kg8 37.Rc3 Kf7 38.Rc2 ˝–˝. pierre – clientivanh, internet, 2008.

6.b5 c5 7.bc6 Qa5 8.Qd2 Nc6 9.Qa5 Na5 –/+.

6.b5 Be6 7.Qd4=+ 0–0 8.Nf3 Nbd7 9.Nc3 Nb6 10.e3= c5 11.bc6=+ bc6 12.Bd3 c5 13.Qh4= Nfd5?? 14.Qh7 1–0. pierre – gndivanov, internet, 2008.

6.Qd4 Nc6 7.Qd2 Be6 –/+.

6.Bd4 0–0 7.b5 Be6 8.Nd2 c6 9.Ngf3 cb5 10.cb5= Qd7 11.e3 Nd5 12.Bc4 Nb4 13.Qa4 Bc4 14.Nc4 Nd3 15.Ke2 Nc5 16.Bc5 dc5 17.Rhd1 Qc7 18.Nce5 a6 19.Rab1 Bf6 20.b6 Qe7 21.Rd5 Rd8 22.Rd8 Qd8 23.Rc1 Qe7 24.Qg4+/– Nc6 25.Nc6 bc6 26.Qc4 Qb7 27.Qc5 Rd8? 28.Qc6+– Qc6?? 29.Rc6 g6 30.b7 Rb8 31.Rc8 Bd8 32.Rb8 (32…h6 33.Rd8 Kg7 34.b8Q Kh7 35.Qb7 Kg7 36.Qb2 f6 37.Qb7#) 1–0. pierre – tveoy, internet live, 2010.

6.Bd4 0–0 7.Nc3 Nc6 8.Nf3 Nb4 9.e4 c5 10.Bf6? Bf6–+ 11.Rc1 Bc3 12.Rc3 Qa5 13.Be2?? Na2 14.0–0 Nc3 15.Qc2 Ne2 16.Qe2 h6 17.e5 de5 18.Ne5 Re8 19.f4 f6 20.Qh5 Be6 21.f5 Qc3 22.fe6 Qe5 23.Qf7 Kh8 24.Qb7 Qe6 25.Qf3 Qe3 26.Qe3 0–1. DanielP4R – Alviss, ChessWorld.net, 2004.

6.Bd4 Nc6 7.Bc3 –/+.

5.e3 0–0

6.Nc3=+ Na6 7.a3 c5 8.b5 =+.

6.Nc3 c5 =+.

6.d4 ed4 7.ed4 Re8 8.Bd3 d5–+ 9.Ne2 Bb4 10.Nbc3 c5 11.0–0–/+ Bc3 12.Nc3 dc4 13.Bc4 cd4 14.Nb5 Nc6 15.Nd4 Na5 16.Bd3 Bd7 17.Nf3 h6 18.Rc1 Be6 19.Be5 Nc6–/+ 20.Bb5 Ne5 21.Ne5 Qd1 22.Rfd1 Red8 23.Rd8 Rd8 24.Rc7? Rd5–+ 25.a4 Re5 26.Rb7 a6! 27.Rb8 Kh7 28.Ba6 Re1 29.Kh2 Ra1 30.Bd3 g6 31.Ra8 Kg7 32.a5 Nd5 33.Ra7 Nb4 34.Be4 Bd5 35.Bd5 Nd5 36.g3 Ra2 37.Kg2 Nb4 38.h4 Nc6 39.Ra6 Na5 40.Kh3 Ra3 0–1. Falco,Peter – Kanning,Thorsten, Rhein Main op 8th, 2005.

6.Nf3 a6 7.Be2 Nc6 8.a3 Bf5 9.d4= ed4 10.Nd4 Nd4 11.Qd4 Bb1 12.Rb1+= Re8 13.0–0 Bf8 14.Bd3 Qe7 15.Rfe1 Rad8 16.Qf4 Qe6 17.Bf5 Qe7 18.b5 ab5 19.cb5 g6 20.Bg6!+– Nd5? 21.Bf7! Qf7 22.Qg5 Bg7 23.Bg7 (23...Ra8 24.Bd4 Kf8 25.e4+–) 1–0. pereira – gjdi, internet, 2009.

6.Nf3 b6 7.Nc3= Bb7 8.Be2 Nbd7 9.0–0 a5 10.b5 Nc5 11.d4 Ncd7 12.Qc2+/– h6 13.Rad1 Qc8 14.de5 Ne5 15.Nd4 Ng6 16.Nf5 Re8 17.Nd5+– Bd5 18.cd5 Bd8 19.f4 Ne7 20.Ne7 Be7 21.e4 Nd7 22.Bg4 Qd8 23.Rfe1 Nc5 24.e5 Bf8? 25.e6 f6 26.Qg6 (26...Re6 27.Re6 Qe8 28.Re8 Re8 29.Qe8 c6 30.dc6 d5 31.c7 d4 32.Bd4 Nd3 33.Rd3 a4 34.c8Q a3 35.Qe7 Kh7 36.Qcf8 h5 37.Qfg7#) 1–0. pierre – Gibasaur, internet, 2008.

6.Nf3 c5 7.bc5= e4 8.cd6 Bd6 9.Nd4 Nc6 10.Be2 Nd4 11.Bd4 a5 12.c5 Be7 13.Nc3 Qc7 14.Qc2 Bf5 15.g4 Bg6 16.h4 h6 17.g5 hg5 18.hg5 Nh7 19.Nd5 Qd7 20.Nb6 (20...Qc6 21.Na8 Ra8 22.Qb2+–; < 20.Ne7 Qe7 21.Qb2 Rfc8+–) 1–0. wiking – mestre_leonardo, queenalice.com, 2009.

6.Nf3 Nc6 7.b5=+ Nb8 8.Nc3 c6 9.Be2 cb5 10.cb5 a6 11.a4 ab5 12.ab5 Ra1 13.Qa1 Be6 14.Qa7 Qc7 15.0–0 Nbd7 16.Ng5 Bf5= 17.f4 h6 18.fe5+/– Ne5 19.Rf5+– hg5 20.Rg5 Nfd7? 21.Nd5 Qd8 22.Rf5 Ng6 23.Qb7 Nc5 24.Qc6 Qa5 25.Bh5 Qd2 26.Bg6 fg6 27.Ne7 Kh7 28.Rf8 Qe3 29.Kh2 Qe7 30.Qc8 g5 31.Qf5 (31…g6 32.Rh8#) 1–0. pierre – takxix, internet live, 2010.

6.Nf3 Be6 7.Nc3 c6 8.Be2 e4 9.Nd4= d5 10.a3 Nbd7 11.0–0 Re8 12.cd5+= cd5 13.Rc1 Rc8 14.Qb3 Ne5 15.Ne6+/– fe6 16.Nd5! ed5 17.Be5+– Rc1 18.Rc1 (18…a6 19.d3+–) 1–0. pierre – opponent, internet, 2008.

6.Nf3 Be6 7.Nc3 Nbd7 8.Ng5 h6 9.Ne6 fe6 10.Bd3 d5 11.cd5 ed5 12.Qb3 c6 13.e4 Nb6 14.0–0 Kh8 15.Rfe1 d4 16.Ne2 Nh5 17.a3 c5 18.Rec1 Rc8 19.Rc2 Nf4 20.Nf4+/– Rf4 21.bc5 Bc5 22.Rac1+/– Be7? 23.Rc8+– Nc8 24.Qe6 Nb6 25.Qe5 Bd6 26.Qd4 (26…Qf8 27.a4+–) 1–0. marre – veia, internet live, 2009.

6.Nf3 Be6 7.Be2 a6 8.d4 =+.

6.Nf3 Be6 7.Be2 Nbd7 8.0–0 c6 9.d4= ed4 10.Nd4 c5 11.bc5 Nc5 12.Nd2 Nce4 13.Ne6 fe6= 14.f3 Nd2 15.Qd2= d5 16.cd5 Nd5 17.Bc4 Bc5 18.Bd5 Qd5=+ 19.Qd5? Be3–/+ 20.Kh1 ed5 21.Rfd1 Rad8 22.Rd3 Bf4 23.Rad1 Rfe8 24.Kg1 Re2–+ 25.Rd5? Rd5 (26.Rd5 Rb2–+) 0–1. gtate (1925) – tomy (2170), net–chess.com, 2006.

6.Nf3 h6 7.Nc3 a6 8.Bd3 Nc6 9.a3 Bd7 10.0–0 Be6 11.Qc2 d5 12.cd5+/– Nd5 13.Nd5 Bd5 14.Ne5 Ne5 15.Be5 Bf6 16.Bf6 Qf6 17.Rac1 Bc6 18.f3 Rad8 19.Bh7 Kh8+/– 20.Be4 Be4 21.fe4 Qg5 22.Rf5 Qg3? 23.Qc7+– Rd2?? 24.Qg3 1–0. pereira – pgpl, internet, 2009.

6.Nf3 e4

7.Nd4 a5 8.b5 Nbd7 9.d3 Ne5 10.Nc3 ed3 11.Bd3 a4 12.Nd5 Be6 13.Nf3 =.

7.Nd4 Na6 8.b5 Nc5 9.Be2 a6 10.Nc3 d5 11.cd5 Nd5 12.ba6 Nc3 13.dc3 =+.

7.Nd4 c5 8.bc5 dc5 9.Ne2 Nc6 10.Nbc3 Nb4 11.Nf4 g5 12.Nfd5=+ Nfd5 13.cd5 White launches an attack 13...Nd5 14.Ne4 Nb4 15.Qb3+= Bf5 16.Qc3 f6 17.Bc4 Kh8 18.f3 Nd5 19.Qb3 Nb4 20.a3+/– b5 21.Bb5 Rb8 22.a4 a6 23.Be2 Be4 24.fe4 Qd6 25.Rb1 Rbd8 26.Kf2 c4 27.Qc4+– Qd2 White creates threats along the open d–file 28.Bd4 Rc8 29.Rhd1 Rc4 30.Rd2+– Rc6 31.a5 Rd8 32.e5 Rf8 33.Kg3 f5 34.Ba1 Nc2 35.Rd7 f4 36.ef4 gf4 37.Kh2 Ba3 38.Rbb7 Re8 39.Rh7 Kg8 40.Rbg7 Kf8 41.Rg5 Re7 42.Rh8 Kf7 43.Bh5 Ke6 44.Rg6 Kd7 45.Bg4 Rce6 46.Ra8 Na1 47.Ra6 Kc7 48.Rae6 Re6 49.Be6 Bb2 50.Rg7 Kc6 51.a6 Be5 52.a7 f3 53.g3 (53...Bg7 54.a8Q Kd6 55.Qd5 Ke7 56.Qd7 Kf6 57.Qf7 Ke5 58.Ba2 Ke4 59.Qg7 f2 60.Bb1 Kd5 61.Qf7 Kd6 62.Qf2 Ke7 63.Qe1 Kd6 64.Bf5 Nb3 65.Qe6 Kc7 66.Qb3 Kc6 67.h4 Kc5 68.h5 Kd6 69.h6 Kc5 70.h7 Kc6 71.Qe6 Kc5 72.h8Q Kb4 73.Qb2 Kc5 74.Qbb6#) 1–0. pierre – rimvydas, internet, 2008.

7.Nd4 c6 8.Nc3 d5 9.cd5 cd5 10.a3 a5 11.b5 Nbd7 12.d3 Re8 13.Be2 =.

7.Nd4 d5 8.Qc2 dc4 9.a3 a5 10.b5 Nbd7 11.Bc4 Ne5 12.Be2 Rb8 13.Nc3 =.

7.Nd4 Qd7 8.d3 Na6 9.b5 Nc5 10.Nc3 ed3 11.Bd3 Nd3 12.Qd3 a6 13.0–0 =.

7.Nd4 Bd7 8.Qb3 Na6 9.Nc2 c5 10.a3 Be6 11.d4 Qb6 12.Nd2 Bf5 13.Be2 +=.

7.Nd4 Nbd7 8.d3 ed3 9.Bd3 Ne5 10.a3 Re8 11.0–0 Nd3 12.Qd3 Nd7 13.Rd1 =.

7.Nd4 Qe8 8.Nc3 c5 9.Ndb5 Qc6 10.Nd5 Nd5 11.cd5 Qb6 12.bc5 dc5 13.Rb1 =.

7.Nd4 Re8 8.Nc3 c5 9.Nc2 Nc6 10.a3 a5 11.b5 Ne5 12.d4 ed3 13.Bd3 =+.

4.c4 g6

5.Nc3 Bg7 6.Nf3 0–0 7.e4 a5 8.b5 c6 9.Be2 cb5 10.cb5 Nbd7 11.0–0 Nc5 12.Qc2 b6 13.d4 ed4 14.Nd4 Bb7 15.Nc6 Bc6 16.bc6 Rc8 17.Rad1+= Rc6 18.e5 Ne8 19.f4 Qb8 20.Nd5 Kh8 21.Bb5+/– Rc8 22.Ne7 Rc7 23.ed6 Nd6 24.Nc6 Qe8? 25.Rd6+– Qe3 26.Kh2 Rfc8 27.Rf3 Qe1 28.f5 Be5 29.Ne5 Na4 30.Qc7! Rc7 31.Ng6 Kg8 32.Rd8 (32.Rd8 Qe8 33.Re8#) 1–0. pereira – kbgu, internet, 2009.

5.Nc3 Bg7 6.Nf3 0–0 7.e4 c6 8.Bd3 Re8 9.0–0 Be6 10.Ng5 Bd7 11.Ne2 h6 12.Nf3= g5 13.Ng3 Be6 14.Bc3 Nbd7 15.a3 Kh7 16.Qc2 Kg6 17.Be2+/– Nh5?? 18.Nh5+– Kh5 19.Ne5 g4 20.hg4 Kg5 21.f4 Kh4 22.Kh2 de5 23.g3# 1–0. byco – ivajja, internet, 2009.

5.Nc3 Bg7 6.Nf3 b6 7.g3 Nbd7 8.Bg2 Bb7 9.0–0 0–0 10.Qb3 Rb8 11.Ng5 Bg2 12.Kg2 h6 13.Nge4 Ne4 14.Ne4 Nf6 15.d3 Ne4 16.de4 Qf6 17.f4 Qe6 18.f5 gf5 19.ef5 Qf6 20.Rad1 Rfe8 21.b5 h5 22.Qa3 Ra8 23.e4 Kh7 24.Rf4 Bh6 25.Rh4+/– Rg8 26.Kh2 Qg7? 27.Rh5+– Qg3?? 28.Qg3 (28.Qg3 Rg3 29.Kg3+–) 1–0. pereira – wzok, internet, 2009.

5.Nc3 Bg7 6.Nf3 d5 7.Ne5+= Nc6? 8.Nc6 bc6+/– 9.Qa4 Bd7 10.cd5 cd5 11.Qa5 d4 12.Qe5+– Be6 13.Nb5 0–0 14.Nd4 Nd7?? 15.Qg7! Kg7 16.Nf5 Kg8 17.Nh6# 1–0. marre – oppo, internet, 2010.

5.Nc3 Bg7 6.g4 0–0 7.Nf3 Nbd7 8.Bg2= Ne8 9.d3 a5 10.a3 c5 11.b5 Ra7 12.Qb3 b6 13.h4 f5 14.gf5+/– gf5 15.h5 Qf6 16.Nd5 Qd8 17.h6 Bf6 18.Rg1 Kh8 19.Bh3 Bh4 20.Ne3 f4 21.Nf5 Bf6 22.0–0–0 Nb8 23.e4 fe3 24.fe3 Be6 25.Kb1 Raf7 26.Rg2 Bf5 27.Bf5 Nd7 28.Rdg1 Bh4?? 29.Be6 (29.Be6 Bf2 30.Rf2+–; 29.Nh4?! Qh4 30.e4 Nc7+/–) 1–0. pierre – McWormiek, internet, 2008.

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    Available lines:
  • 1.b4 (4 players, 1 day/move)
  • 1.b4 (4 players, 10 days/move)
  • 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 (4 players, 3 days/move)
  • 1.b4 e5 2.Bb2 Bb4 3.f4 ef4 4.Bg7 Qh4 5.g3 fg3 6.Bg2 gh2 7.Kf1 hg1Q 8.Kg1 (Kucharkowski-Meybohm gambit, 6 players, 10 days move)
  • 1.b4 e5 2.Bb2 f6 3.e4 Bb4 4.Bc4 (Sokolski gambit, 4 players, 3 days/move)
  • 1.c4 Nf6 2.b4 (English orangutan, 4 players, 3 days/move)
  • 1.e4 c5 2.b4 (Sicilian: Wing gambit, 4 players, 10 days/move)
  • 1.e4 e6 2.Nf3 d5 3.e5 c5 4.b4 (French: Wing gambit, 4 players, 3 days/move)

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