3.a3 Bh5 4.f3 e6 5.e4 de4 6.Qe2 Nf6 (6...Bg6 7.Qb5 Nd7 8.Qb7=) 7.Nc3 (7.Qb5!? Nbd7 8.Qb7 ef3 9.Nf3=) 7...ef3-/+ 8.Nf3 Nc6 9.0-0-0 (9.Qb5 Qd7-/+) 9...Nd4 10.Qc4? (better 10.Qe3!? Nf5 11.Qd3-/+) 10...Nf3-+ 11.gf3 (11.Ne2 Ng5 12.Qb5 Nd7 13.h4-+) 11...Bf3 12.Bh3 Bh1 13.Rh1 Bd6 (13...Qd7 14.Bg2 0-0-0 15.d3-+) 14.Rg1 (14.Qb5 c6 15.Qb7 Qc8 16.Qc8 Rc8-+) 14...Rg8 (14...0-0!? 15.Ne4 e5 16.Qd3-+) 15.Ne4 Ne4 16.Qe4 c6 (16...Qd7 17.Qb7 Rd8 18.Bg2 Bh2 19.Bc6 Bg1 20.Bd7 Rd7 21.Qb8 Rd8 22.Qb5 c6 23.Qc6 Ke7 24.Qb7 Rd7 25.Qg2=+) 17.Qh7 (17.Be6 Qe7 18.Qh7=+) 17...Kd7-+ 18.Qd3 (18.Bg7 Qe7 19.Kb1 f5-+) 18...Kc7 19.Qf3 Qe7 20.c4 Rad8 (20...f5 21.Rg6 Qf7 22.Qg2-+) 21.c5 Bh2?? (better 21...Bc5 22.Rf1 Bd4 23.Bd4 Rd4 24.Qf7 Qf7 25.Rf7 Rd7-+) 22.Rg2=+ Kb8 23.Rh2 Ka8 24.Rg2 f6 (better 24...f5!? 25.Qe3 g6=+) 25.Re2+= e5 26.Bg2 (26.d4 Rd5+=) 26...Rd5 (26...g5!?=+) 27.d4+= Rgd8 28.de5 (28.Qf5!? R5d7 29.de5 fe5 30.Be5+= (30.Qe5 Qf7 31.Qc3 Rd1 32.Kc2 Qa2-+; 30.Re5 Qh4 31.Be4 g6 32.Qg6 Qf2-/+)) 28...Rd1 29.Kc2 fe5 (29...Qe6 30.Qc3 Qa2-+) 30.Re5?? (30.Be5 Qh4 31.Qf4 Qh7 32.Be4 Qg8+=) 30...Qd7 (better 30...R8d2 31.Kb3 Rb2 32.Kb2 Qe5 33.Kc2 Rd8-+) 31.Re2 (31.Bc3 Rd3 32.Qe2 Rg3+=) 31...Rg1= 32.Qe4 Qd1 33.Kc3 Rg2? (better 33...Qd7+=) 34.Rg2+- Rc8 (34...g5 35.Qe2 Qd4 36.Kc2+-) 35.Qd3 Rb8 1-0. black_bishop_88 (2430) - pierrotbasilou (2445), lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2)

3.b5 a6 4.a4 ab5 5.ab5 Ra1 6.Ba1 Nf6 7.Nf3 e6 8.e3 Nbd7 9.Be2 Bd6 10.0-0 Qe7 11.c4 0-0 12.d4 c6 (12...dc4 13.Bc4 Ra8 14.Nc3=+) 13.Nbd2 Ra8 14.c5 Bb8 15.Bc3 h6 16.Qb3 Qd8 17.Ra1 (17.h3 Bf3 18.Nf3 e5+=) 17...Ra1 18.Ba1 Qa5 (18...Ne4 19.Bd3=) 19.Bc3+= Qa7 20.bc6 bc6 21.h3 Bf5 22.Qb2 Ne4 23.Ne4 Be4 24.Nd2 Bf5 25.Nb3 Qc7 26.Na5?? (better 26.f4=) 26…Qh2 (26...Qh2 27.Kf1 Qh1) 0-1. BeepBeepImAJeep (2740) - Patzel (2700), lichess.org, 2020.

3.b5 Qd7 4.Nf3 (4.h3 Qb5 5.Be5 Nc6 6.Bc7 Qb2=+) 4...Bf3 (4...Qb5!? 5.Bd4 c5-/+) 5.ef3= Qb5?? (better 5...Nf6=) 6.Bb5+- c6 7.Be2 e6 8.0-0 Nf6 9.d4 Bb4 10.c4 Nbd7 11.a3 (11.Qb3 Be7+-) 11...Ba5 12.Nd2 Bd2 13.Qd2 0-0 14.a4 Ne4 (14...dc4 15.Bc4 Rfd8+-) 15.fe4 de4 16.Qg5 f5 17.d5 (17.Qe7 Rf7 18.Qe6 Nf8+-) 17...cd5 18.Qg7 1-0. BeepBeepImAJeep (2545) - SUTHEY2 (1730), lichess.org, 2017.

3.b5 e5 4.a4 Nd7 5.Nf3 Ngf6 (better 5...Bd6!?=+) 6.Ne5= (6.Be5? Bf3 7.Bc7 Qc7 8.gf3 Bd6-+) 6...Ne5 7.Be5 Bb4 8.Bb2 0-0 9.c3 Bd6 10.d3 Re8 11.Qc2 c5 12.e3 Bc7 13.Be2 Rc8 14.Bg4 Ng4 15.h3 Nf6 16.Nd2 d4 17.c4 (better 17.cd4!? cd4 18.e4=) 17...de3-/+ 18.fe3 (18.Nb3 ef2 19.Kf2 Nh5-+) 18...Re3-+ 19.Kd1 Rd3 20.Bf6 (better 20.Ra3 Ra3 21.Ba3-+) 20...gf6 21.Rf1 Be5 (21...Qd4 22.Ra2 Rd8 23.Qb2 Qc4 24.Rf2-+) 22.Ra2?? (22.Ke2 Rg3 23.Rad1 Rg2 24.Rf2 Rf2 25.Kf2 Qd7 26.Rg1 Kh8-+) 22...Rc7 (22...Bc3 23.Rf3 Rd2 24.Qd2 Bd2 25.Rd2-+) 23.Kc1?? (23.Ke2 Rg3-+) 23...Rcd7 (23...Rc3 24.Nb3-+) 24.Rf2?? (better 24.Qd1-+) 24...Rd2 25.Rd2 (25.Qd2 Rd4 Double attack (25...Rd4 Decoy); 25.Rd2 Bf4 Pinning (25...Bf4 Decoy)) 25...Bf4 26.Kb1?? (better 26.Qc3=+) 26...Rd2-+ 27.Qf5 Be5 (27...Rd1 28.Kc2 Qd2 29.Kb3 Qb4 30.Kc2 Rc1 31.Kd3 Qc4) 28.Qg4 Kf8 29.Rd2 Qd2 30.Qe4 (30.Qc8 Kg7 31.Qg4 Qg5 32.Qf3-+) 30…Qb2 0-1. Jimito100 (2010) - thejaguar (1990), Rated Bullet game, lichess.org, 2020.

3.Qc1 Nc6 4.b5 Nb8 5.e3 c6 (5...a6 6.ba6 Na6 7.Bb5 c6 8.Be2 Be2 9.Ne2=) 6.Bd3 cb5 7.Bb5 Nd7 8.Nc3. pierred – islanderfan, slowchess.com, 2006.

3.Qc1 Bd7 4.e3 e5 (4...Nf6!?=) 5.Be5+= Nc6 6.Qb2 Ne5 7.Qe5 Be7 (7...Be6 8.Nc3+=) 8.Qb2 (better is 8.Qd5!? c6 9.Qb3+/–) 8...Nf6+= 9.Nf3 c6 10.a4 Bd6 11.d4 Bg4 12.Nbd2 Qe7 13.c3 a5 14.b5 cb5 (14...0-0!?+=) 15.Bb5+/– Kf8 16.h3 Be6 17.0-0 Qc7 18.Rfc1 h6 (18...Qe7 19.c4+-) 19.c4 Qb8 20.c5 Bc7 21.Qa3 Kg8 22.Rab1 Ne4 23.Ne4 de4 24.Nd2 Bd5 (24...f5 25.Bc4 Bc4 26.Nc4+-) 25.Bc4 Bc4 26.Nc4 Ra6 27.d5 Qc8 28.d6 Bd8 29.Ne5 Bf6 30.d7 Qc7 31.Nf7 Kf7+= 32.Qb3 Kg6 33.Qb7 Qc6 34.Qc6 Rc6 35.Rb6 Rc7 36.c6+- Rd8 37.Rd1 Kf7 38.Kf1 Ke7 39.Ke2 g6 40.Rd5 Ke6 41.Rd1 Ke7 42.f3 Be5 43.fe4 Ra7 44.Rd5 Bg3 45.e5 Rc7 46.Kd3 h5 47.Ra5 Bh2 48.Kd4 Bg3 49.Kd5 Bf2 50.Rb3 Be1 51.Rab5 Ra7 52.Rb8 Ra5 53.R8b5 Ra7 54.e4 Rf8 55.Rf3 Rf3 56.gf3 Ba5 57.Rb7 Ra6 58.e6 Bd8 59.c7 Rd6 60.Kc5 Bc7 61.Rc7 Re6 62.d8Q! Kd8 63.Rc6 Re5 64.Kb4 Rg5 65.a5 Kd7 66.Rc3 Re5 67.a6 Re8 68.a7 Ra8 69.Ra3 Kc7 70.f4 Kb6 71.e5 h4 72.e6 Kc6 73.Ra6 Kc7 74.Kb5 Kd8 75.Kc6 Ke7 76.Kb7 Re8 77.a8Q Ra8 78.Ra8 Ke6 79.Ra5 Ke7 80.Kc7 Kf7 81.Kd7 Kf6 82.Re5 g5 83.Rg5 Kf7 84.Rf5 Kg7 85.Ke7 Kg6 86.Rg5 Kh7 87.Kf7 Kh6 88.Rf5 Kh7 89.Rh5 mate 1–0. Dumontelle,Joe – CM6000/Vanessa, tournament game, 2000.

3.c3 Qd6 4.Qb3 Nc6 5.d4 0-0-0 (5...e5 6.Ba3 Qe6 7.b5=+) 6.a4 (6.Qa4!? a6 7.Na3=) 6...e5=+ 7.de5 Ne5 8.Nd2 Nf6 9.Ngf3 Nc6 (9...Nf3 10.Nf3 Bf3 11.gf3-/+) 10.a5 h6 (10...Ne4 11.a6 b6 12.Rd1 Nd2 13.Rd2=+) 11.b5= Ne5 12.Nd4 (12.Ba3 Qe6 13.Ne5 Qe5 14.e3=) 12...Nc4 (better 12...Ne4!?=) 13.Nc4+= dc4 14.Qc4 Ne4 (14...Be6 15.Qd3 Bd5 16.f3+/-) 15.f3 (15.Qf7 Be7 16.a6+/- (16.Qg7 Qf4 17.Bc1 Qf2 18.Kd1 Bf5-+)) 15...Nf2?? (better 15...Be6 16.Qa4 Nc5+/-) 16.Kf2+- Be6 17.Qd3 (17.Ne6 fe6 18.Ba3 Qd5+-) 17...Qc5 18.Qb1 (18.e3 Qe5+-) 18...h5 (18...Bd6 19.a6+-) 19.Ke1 (19.e3 Qe5+-) 19...Qg5 (19...Qd6 20.Qc2 (worse 20.Ne6 Qd2 21.Kf2 fe6+-) 20...Qc5 21.Ba3+-) 20.Qc1 (worse 20.Ne6 Qd2 21.Kf2 fe6+-) 20...Qh4 21.g3 Qe7 22.Bg2 (22.a6 Qe8+-) 22...h4 (22...Bd7 23.b6! Qd6 24.ba7+-) 23.g4 (better 23.a6 Bd5 24.c4 Qb4 25.Kf1 Qc4 26.Qc4 Bc4 27.ab7 Kb7+-) 23...h3 24.Bf1 Rg8 (24...Qh4 25.Kd2 Bc5+-) 25.Qe3 Qd7 (25...Qh4 26.Qf2 Qg5 27.b6 cb6 28.ab6+-) 26.Qf2 (better 26.a6!? Bc5 27.ab7 Kb7 28.Bh3 Rge8+-) 26...Bc5 (26...Rh8 27.b6! a6 28.bc7 Qc7 29.Ne6 fe6 30.f4+-) 27.e3 f5 (27...Bd5 28.Bh3 Rge8 29.e4+-) 28.g5 (better 28.gf5 Bf5 29.a6 b6 30.Nf5 Qf5+-) 28...f4 29.e4 (29.Ne6?! Be3 30.Qe2 Qe6+-) 29...Bb3 (29...Qe7 30.Rg1+-) 30.Be2 (better 30.Ba3 Ba3 31.Ra3+-) 30...Bc2 (30...Be6 31.Qh4 Rdf8 32.a6+-) 31.Qh4 (better 31.Bc4 Be4 32.fe4 Rge8 33.Qf4 Re7+-) 31...Bd4 32.cd4 Be4 (32...Qd6 33.Qh3 Kb8+-) 33.fe4 f3 (33...Kb8 34.Qf4 Rdf8 35.Qe3+-) 34.Bf3 (better 34.b6 a6 35.Bf3+-) 34...Rdf8 (34...Qb5 35.Qh3 Kb8+-) 35.Bg4 Kb8 36.Bd7 Rd8 37.Qg4 Rge8 38.Be8 Re8 39.d5 (39.Qd7 Rf8 40.b6 a6 41.Rc1 Rc8 42.bc7 Rc7 43.Rc7 Ka7 44.Rb7 Ka8 45.Qc8) 39...a6 40.Qf5 ab5 41.Qe6! Rg8 (41...Re6 42.de6 Passed pawn) 42.Qg8 Ka7 43.Qe6 (43.Bd4 c5 44.dc6 Ka6 45.Qa8) 43...c6 (43...b4 44.Bd4 b6 45.ab6 Kb8 46.Qe8 Kb7 47.Ra7) 44.Qd7 cd5 (44...Ka6 45.dc6 bc6 46.Qc7 c5 47.Qb6) 45.ed5 (45.ed5 Ka6 46.Bd4 b4 47.Qe6 Kb5 48.Qe2; 45.Bd4 Ka6 46.Qe6 b6 47.Qb6) 1-0. ClayPigeons (2140) - WWALTER1492 (2110), Rated Bullet game, lichess.org, 2020.

3.c3 e5 4.h3 Be6 5.Nf3 Nd7 6.e3 Ngf6 7.Bb5 (7.Be2 a5+=) 7...Bd6–/+ 8.c4 dc4 9.Qc2 a5 10.Ng5 Bd5 11.e4 c6 12.Bc4 (12.ed5 cb5 13.Nc3 Bb4 14.Nb5 Nd5 15.Ne4–+) 12...Bc4–+ 13.Qc4 0-0 0–1. Rohner,Michael – Gehrmann,Christian, DESC, 2003.

3.Nc3 c6 4.d4 e6 5.Qd3? (5.a3!?=+) 5...Bf5 6.0-0-0?? (better 6.Qg3-/+) 6...Bd3-+ 7.Rd3 Nf6 (7...Bb4 8.Nf3-+) 8.a3 Bd6 9.f3 b6 (9...a5 10.b5-+) 10.Nh3 c5 11.dc5 bc5 12.bc5 Bc5 13.e4 d4 (13...0-0 14.ed5 Nd5 15.Nd5 ed5 16.Nf4-+) 14.Nb5 (14.Na4 Be7 15.Rd4 Qa5-+) 14...0-0 (better 14...Nc6!? 15.c3 e5 16.cd4 ed4 17.Rd2-+) 15.Nd4 Bd4 16.Rd4 (16.Bd4 Qc7-+) 16...Qc7 17.Bd3 Nc6 18.Rc4 Qd6 (18...Nd7!? 19.Ba1-+) 19.Rd1 Rac8 (19...e5 20.Kd2-+) 20.f4?? (20.e5 Qd5 21.ef6-+) 20...Qb8 (better 20...Qe7-+) 21.Ng5 (21.Bf6 gf6 22.Be2 Na5-+) 21...h6 (better 21...Qf4 22.Kb1 Qg5 23.g3-+) 22.Nf3 White prepares the advance e5 (22.Nh3 Ng4 23.Rc3 Ne3-+) 22...Ng4 (better 22...Qf4 23.Rd2 Nd7 24.e5-+) 23.Re1 White plans e5 (23.g3 Ne3 24.Be5 Qb6-+) 23...Nf2 (23...Qf4!? 24.Kb1 Nh2 25.Nh2 Qh2 26.Re2-+) 24.Bf1 (24.Kb1-+) 24...Ng4 25.h3?? (25.Bd3 Qf4 26.Kb1 Nh2 27.Nd4-+) 25...Nf6 (better 25...Qf4 26.Kb1 Ne3 27.Rc5 Nf1 28.Rf1 Qe4 29.Re1-+) 26.e5 Nd5 27.Bd3 Na5 28.Nd4 (28.Rc8 Rc8 29.g3-+) 28...Nc4 29.Bc4 Rc4 30.Nb3 Qc7 (30...Qb3! 31.Re2 Rb8 32.Kd2 Rc2 33.Ke1 Re2 34.Ke2 Qe3 35.Kd1 Rb2 36.f5 Qd2) 31.Re2-+ Rc8 32.Na1 Nc3 (32...Qb6 33.Re1 Qf2 34.Bc3 Rc3 35.Re2 Qe2 36.Kb2 Rc2 37.Nc2 Rc2 38.Kb3 Qc4) 33.Rd2 Rc6 (33...Rf4 34.Rd6 Rf1 35.Kd2 Qc4 36.Bc3 Qc3 37.Ke2 Re1 38.Kf2 Qe3) 34.Nb3 Ne4 35.Re2 Rc2 (35...Rc2 36.Kb1 Re2 37.Ka1 Qc2 38.Nd2 Rd2 39.Bd4 Qd1) 0-1. alessandrocarvalhaes (1900) - elmejorlatin38 (2015), lichess.org, 2020.

3.Nc3 Nf6 4.d4 (better is 4.h3!? Bd7 5.Nf3=) 4...e6–/+ 5.f3 Bf5 6.g4 Bg6 7.h4 h6 (7...Bb4 8.h5 c5 9.a3+=) 8.a3 Bd6 9.Kf2 c6 (9...a5 10.ba5 Nc6 11.e3–/+) 10.e3 Nbd7 11.Bd3 Bd3 (11...e5!?–/+) 12.cd3+= a5 13.b5 Qb6 14.a4 c5 15.dc5 Bc5 16.d4 Bb4 17.Nge2 Ke7 18.Qd3 Rac8 19.Rac1 Bd6 (19...Qd6 20.Kg2+=) 20.g5 (20.Kg2!?+=) 20...Nh5+= 21.f4 hg5 (21...Qd8 22.Ng3 Ng3 23.Kg3–/+) 22.hg5= g6 (22...Qd8 23.e4 Nb6 24.Qf3+=) 23.Kf3 (23.f5 Bb4+= (23...gf5? 24.Nd5 ed5 25.Rc8 Rc8 26.Rh5+-)) 23...Ng7 (23...Qd8!?+=) 24.Ng3 (24.e4!? Bb4 25.ed5+/–) 24...Rh1= 25.Rh1 Nf5 26.Nf5 gf5 27.Rh7 Nf8 (27...Rf8 28.Qc2=) 28.Rh6 (28.Nd5!? ed5 29.Rf7 Kf7 30.Qf5 Kg8 31.Qc8+=) 28...Qc7= 29.Nd5 ed5 30.Qf5 Qc4?? (better is 30...Qc2 31.Qf6 Ke8 32.Qd6 Qd1 33.Kg3 Qg1 34.Kh4 Ng6 35.Rg6 Qh2 36.Kg4 Qg2 37.Kf5 Qe4 38.Kf6 A) 38...fg6?? 39.Qe5 Qe5 40.de5+- (40.Ke5?! Rc4+=; 40.fe5?! Rc4=); B) 38...Qg6 39.Ke5 Qe4 40.Kf6 Rc6 41.bc6 Qg6 42.Ke5 Qe4 43.Kf6 Qg6 44.Ke5 Qe4 45.Kf6=) 31.Qf6+- Ke8 32.Qd6 Qf1?? (better is 32...Ng6 33.Rh1 Nh4 34.Kg4 Ng6+-) 33.Kg4 Qg2 (33...Ng6 34.Kf5 Rd8+-) 34.Kf5 Qc2 (34...Qe4 35.Kf6 Ng6+-) 35.Kf6 (35.Kf6 Nh7 36.Kg7+-) 1–0. Brjuhin,Boris (2155) – Karklin,Viacheslav (2215), Dubna, 2007.

3.c4 Bh5 4.cd5= Nf6 (4...Qd5 5.Nc3 Qd7=) 5.d6 (5.Qa4 Qd7 6.Qd7 Nbd7+/-) 5...Nbd7 (5...ed6 6.Nh3=+) 6.de7 (6.dc7!? Qc7 7.Nc3+=) 6...Be7= 7.a3 Bg6 (7...0-0 8.Nf3=) 8.Nf3+= 0-0 9.e3 c6 10.d4 Nd5 11.Bd3 N7f6 12.Bg6 fg6 13.0-0 Rc8 (13...Bd6!?+/-) 14.Nbd2+- Bb4?? (better 14...Kh8+-) 15.Nc4 (better 15.ab4 a6 16.e4+-) 15...Ba5 16.Nce5 (16.Qc2 c5 17.dc5 Rc5+/-) 16...Bc7 (16...Ne4 17.Rb1+=) 17.Qb3 Qd6 (17...Ne4 18.Rad1=) 18.Rac1 (better 18.Rae1 Ne4 19.Qb7+=) 18...Ng4?? (18...Qe6!?=) 19.h3 (better 19.Ng4 Qe7 20.Nge5 Be5 21.Ne5+-) 19...Ne5+= 20.de5 Qe6 21.Ng5 Qe8? (better 21...Qe7 22.e4 Qg5 23.ed5 cd5 24.Qb7 Qd8+-) 22.e4+- (22.Qb7?! Be5 23.Be5 Qe5+/-) 22...h6 (22...Be5 23.ed5 Bb2 24.dc6 Kh8 25.Qb2 bc6 26.Qb7+-) 23.Nf3 (23.ed5 hg5 24.d6 Kh7+-) 23...Rf3 24.gf3 (24.Qf3?! Nb6 25.Qb3 Kh7+-) 24...Be5 25.ed5 (25.Be5 Qe5 26.ed5 Qg5 27.Kh1 c5 28.d6 Kh7 29.Qb7 Qf5+-) 25...Bb2 26.Qb2 cd5 (26...Qd7 27.Rfd1 cd5 28.Rc8 Qc8 29.Rd5+-) 27.Rc8 (27.Qb7!? Rd8+-) 27...Qc8 28.Qe5 (28.Qd4 Kh7+-) 28...Qh3 (28...Qf5 29.Qf5 gf5 30.Rd1+-) 29.Qg3 (better 29.Qd5!? Kh7 30.Rc1 b6+-) 29...Qe6 (29...Qf5 30.Rd1 Kh7 31.Kg2+-) 30.Rd1 (better 30.Qb8 Kh7 31.Rd1 Qe2+-) 30...g5? (30...Kh7 31.Qb8 Qe2 32.Rd4 (worse 32.Rd5 Qf3 33.Rd8 Qg4 34.Qg3 Qf5+-) 32...Qe1 33.Kg2+-) 31.Qg4 (31.Qb8 Kh7 32.Qb7 g4 33.Qd5 Qd5 34.Rd5 gf3+-) 31...Qf6? (31...Kf7+-) 32.Rd5 g6 (32...b6+-) 33.Rd7 h5 (33...Qc6+-) 34.Qd4 (34.Qc4 Qf7 35.Qf7 Kh8 36.Qe8) 34...Qd4+- 35.Rd4 Kf7 (35...a5 36.Rd8 Kg7 37.Rd7 Kf6 38.Rb7+-) 36.Kg2 (36.Rd7 Kf6+-) 36...Kf6 (36...Ke6 37.Rd8 h4 38.Ra8+-) 37.Kg3 (37.Rd7 b6+-) 37...Kf5 (37...Ke6+-) 38.Rd5 Kf6 39.Rb5 (better 39.Rd7!? h4 40.Kg4 b5+-) 39...b6 40.a4 h4 (40...Kf7 41.a5 ba5 42.Rg5+-) 41.Kg4 a6 (41...Kf7 42.Rg5 h3 43.Kh3+-) 42.Rd5 (better 42.Rb6 Kf7+-) 42...b5 (42...Kf7 43.Rg5 h3 44.Kh3+-) 43.Rd6 (43.ab5!? ab5 44.Rb5 Ke6+-) 43...Ke5 44.Ra6 b4 45.Rb6 Kd4 (45...h3 46.Kh3 Kd5 47.Rb4+-) 46.Rb4 Kd3 47.Rb5 Ke2 48.Rb8 h3 49.a5 h2 50.a6 (better 50.Rh8 Kf1 51.Rh2 Kg1+-) 50...Kf2 (50...h1Q 51.Rb2 Kd3 52.Kg3 Qg1 53.Kh3-+) 51.Rg8 (51.Rb2 Kg1 52.Kg3 h1N 53.Kg4 Nf2 54.Kg5 Nh3 55.Kh6+-) 51...h1Q-+ 52.Rg6 Qf3 (better 52...Qh4 53.Kf5 Qf4 54.Ke6 Qe3 55.Kf6 Kf3 56.Rg7-+) 53.Kg5 Qf4 (53...Qf4 54.Kf4 Ke2 55.a7 Kd2 56.a8Q Kc3 57.Qc8 Kd3 58.Rg2 Kd4 59.Rd2) 0-1. ClayPigeons (2115) - MRTCBNKY (2075), Rated Bullet game, lichess.org, 2019.

3.d3 f6 4.Nd2 e5 5.b5 a6 6.a4 c6 7.c4 dc4 8.dc4 Qa5 9.Qc2 Bb4 10.e3 Nd7 11.Be2 Be2 12.Ne2 Nc5 13.Bc3 Rd8 (13...ab5 14.cb5 Rd8 15.Nb3 Bc3 16.Nc3 Nb3 17.Qb3+=) 14.0-0= Nh6 (worse is 14...ab5 15.ab5 Bc3 16.Ra5 (worse is 16.Nc3 Qc7+/–) 16...Ba5 17.Ne4+-) 15.Ne4 Ne4 16.Bb4 Qb4 17.Qe4 Qd6 18.ba6 ba6 19.Nd4 Ra8 ½–½. Ungureanu,S (2005) – Horvath,Zs (2395), Arad ROM, Open, 2013.

3.e3?? Bd1 4.Kd1 e6 5.a3 Nf6 6.Nf3 c5 7.Bb5 Nc6 8.Ne5 Qc7 9.f4 (9.bc5 Bc5 10.Nf3 Ne4 11.Bg7 Rg8-+) 9...a6 (9...cb4!? 10.ab4 Bb4 11.Ra6-+) 10.Bc6 bc6 11.c3 (11.Nd3 c4 12.Nf2 Qd8-+) 11...cb4 (11...c4 12.d4-+) 12.cb4 Rb8 (12...c5 13.bc5 Bc5 14.Nd3-+) 13.Nc3 a5 14.Rc1 (14.Na2 Ne4 15.Nd3 Bd6-+) 14...ab4 15.ab4 Bb4 16.Ba1 Bc3 17.Bc3 0-0 (17...Ne4 18.Rg1-+) 18.Ke2 (18.Bd4 Ne4 19.Nc6 Ra8-+) 18...c5 Black prepares the advance c4 19.g4 (19.Nf3 Nd7-+) 19...c4 (19...Ne4 20.Rb1-+) 20.Bd4 Ne4 21.d3 cd3 22.Nd3 Qa7 (better 22...Qa5 23.Rc2 Rfc8-+) 23.Ba7+- Rb2?? (23...Ra8 24.Rc7 f6+-) 24.Nb2 Ra8 25.Bd4 Ra2 (25...h6+-) 26.Rc8 1-0. BeepBeepImAJeep (2570) - hernanezequiel (1775), lichess.org, 2017.

3.Nf3 Nc6 4.e3 e6 5.b5 Na5 6.Be2 Nf6 7.0-0 h5 (7...Bd6 8.d3=) 8.d3 Bd6 9.Nbd2 b6 (9...a6 10.e4 Bf4 11.a4+=) 10.a4 (10.e4 Bf4+/-) 10...Qe7 11.Nd4 Be2 12.Qe2 Ng4 (12...c5 13.bc6 Qc7 14.f4+=) 13.h3+/- 0-0-0 14.Nc6 Bh2 (14...Nc6 15.bc6 Nf6 16.e4+/-) 15.Kh1 Nc6 16.bc6 Qd6 (better 16...Bd6!?+/-) 17.Nf3+- (17.hg4?! hg4 18.g3 Bg3 19.Kg1 Be5 20.Be5 Qe5=) 17...g5? (17...a5+-) 18.Bh8 (18.hg4?! hg4 19.d4 Kb8=) 18...Rh8 19.d4 (19.hg4 hg4 20.g3 gf3 21.Qf3 Bg3 22.Kg2 Be5-/+) 19...Nf6 (19...Qc6 20.Nh2 (20.hg4?! Bd6 21.gh5 Rh5 22.Kg1 g4+-) 20...Nh2 21.Kh2+-) 20.Qa6 (20.Ng5 Rf8+-) 20...Kd8 21.Nh2 g4 22.h4 (22.Qa7!? Ke7 23.Qb7 Ne4+-) 22...g3 (22...Qc6 23.c4 dc4 24.Rac1+- (24.Qa7?! Ke7 25.Rac1 Ne4+-)) 23.Qa7 Ke7 24.Nf3 (24.fg3!? Ne4 25.Kg1 Ng3+-) 24...gf2 25.Ne5 (better 25.Rf2 Ne4 26.Raf1 Rg8+-) 25...Ng4?? (better 25...Ne4 26.g4 hg4+-) 26.a5 f6 27.ab6 (better 27.Ng6 Kf7 28.Nf4 (28.Nh8?? Kg7 29.g3 Qg3 30.Qc7 Qc7-+) 28...ba5 29.Ra5 Ne3 30.Rf2+-) 27...fe5 28.Qc7 Qc7 29.bc7 ed4 30.ed4 Rc8 31.Ra7 Kd6 32.g3 Kc6 33.Rfa1?? (better 33.Kg2+/-) 33...Rc7?? (better 33...Ne3 34.R7a3 f1Q 35.Rf1 Nf1-+) 34.R1a6?? (better 34.Rc7 Kc7 35.Kg2+-) 34...Kb5= 35.Ra5 Kc6?? (better 35...Kb4 36.Ra4 Kb5 37.R7a5 Kb6 38.Ra6 Kb5=) 36.Rc7+- Kc7 37.Kg2 Kb6 38.Rc5 (38.Ra8 Kb5 39.Rh8 Kc4 40.Rh5 Kd4+-) 38...Kb7 (38...e5 39.Rc8 e4+-) 39.Rc3 Kb6 40.Rf3 Kb5 41.Rf2 Nf2 (41...Kc4 42.Rf4 Ne3 43.Kf2 Nf5+-) 42.Kf2 Kc4 43.Ke2 (better 43.Ke3 Kc3 44.g4 hg4 45.h5+-) 43...Kd4-/+ 44.g4? (44.Kf3 e5 45.g4 e4 46.Kg3=+) 44...hg4-+ 45.h5 g3 (better 45...Ke5 46.Ke3 Kf5-+) 46.h6+- e5 47.h7 g2 48.Kf2 e4 49.h8Q Kc4 50.Kg2 d4 51.Kf2 Kc3 52.Qc8 Kd2 Black prepares e3 53.Qc4 e3 (53...d3 54.Qe4 Kc3 55.cd3 Kb3 56.Qc4 Ka3 57.d4 Kb2 58.d5 Kb1 59.d6 Kb2 60.Qb4 Kc1 61.d7 Kc2 62.d8Q Kc1 63.Qdd2) 54.Kf1 e2 55.Qe2 Kc3 56.Qd3 Kb2 57.Ke2 Kc1 58.Qd2 Kb2 (58...Kb1 59.Kd1 d3 60.cd3 Ka1 61.Kc2 Ka2 62.Qa5) 59.Qd4 (59.Kd1 Kb1 60.Qb4 Ka2 61.Kc1 d3 62.Qa5) 59...Kc1 (59...Kc2 60.Qc4 Kb2 61.Kd3 Ka3 62.Qb5 Ka2 63.Kc3 Ka3 64.Qb3) 60.Qd2 (60.Kd3 Kb1 61.Qb4 Kc1 62.c4 Kd1 63.Qd2) 60...Kb2 61.c4 (61.Kd1 Ka3 62.Qa5 Kb2 63.Qb4 Ka2 64.Kc1 Ka1 65.Qa5) 61...Kb3 62.c5 Kc4 63.c6 Kb5 64.c7 Ka6 (64...Kc5 65.c8Q Kb5 66.Qb7 Kc5 67.Qdd5) 65.c8Q Kb6 (65...Kb5 66.Qb7 Kc5 67.Qdd5) 66.Qb2 Ka7 (66...Ka5 67.Qa8) 67.Qcb7 (67.Qd4) 1-0. FERNANDO_2013 (1810) - tupanov (1730), Rated Blitz game, lichess.org, 2018. (=1.Nf3 d5 2.b4 Bg4 3.Bb2)

3.g3 c6 (--> 1.b4 c6 2.Bb2 d5 3.g3 Bg4).

3.g3 Nc6 4.b5 Na5 5.Bd4 =+.

3.g3 d4 4.Bg2= c6 5.d3 (5.h3 Bf5=) 5...e5+= 6.a3 (6.c3 Nf6+=) 6...Nf6 (6...a5 7.ba5 Qa5 8.Qd2+=) 7.Nd2 (7.h3 Be6+=) 7...Nd5 8.Nc4 (8.Ngf3 f6+=) 8...Nd7 (8...f6 9.Qd2+=) 9.Nf3 Bf3 10.Bf3 h5 (10...b5 11.Na5 Nb4 12.c3 Qa5 13.ab4=) 11.Bd5 (better is 11.e3!? b5 12.Na5 Nb4 13.Nb3+= (worse is 13.Nc6 Nc6 14.Bc6 Rc8=)) 11...cd5+= 12.Nd2 (12.Na5 h4+=) 12...h4 (12...a5 13.ba5 Qa5 14.0-0–/+) 13.Nf3 (13.g4 a5–/+) 13...hg3 14.fg3 g5 (14...Rc8 15.Rc1–/+) 15.Bc1 (15.e3!? g4 16.Ng1–/+) 15...g4–/+ 16.Nd2 (16.Nh4 a5 17.b5 Rh4 18.gh4 Qh4 19.Kf1 f5–/+) 16...Qf6 (16...a5 17.ba5 Qa5 18.0-0–/+) 17.Nb3 a5 (17...Rc8 18.e3 de3 19.Be3–/+) 18.Bd2 (better is 18.Na5!? b6 19.Nb3+=) 18...a4–+ 19.Nc1 e4 (19...Bh6 20.Bh6 Rh6 21.Qd2–+) 20.de4 (20.Bf4 Bh6 21.0-0 Rc8–/+) 20...de4 (20...Bd6 21.Bf4 Bf4 22.gf4 de4 23.Qd2–+) 21.Bf4 d3 (21...Bh6!? 22.0-0 Ne5–/+) 22.Ra2–/+ Qb6 (22...Qc3 23.Kf2 de2 24.Qe2–/+) 23.cd3 (23.ed3!? Rh2 24.Rh2 Qg1 25.Kd2 Qh2 26.Qe2 Qe2 27.Ne2 ed3 28.cd3=) 23...Rh2+= 24.Rh2 Qg1 25.Kd2 Qh2 26.Qc2 (26.de4 Nf6 27.e5 Nh5=) 26...Bh6–/+ 27.Qc7 (27.Bh6!? Qh6 28.Kd1–/+) 27...Qg3–+ 28.e3 Bf4 (28...Qf2 29.Kc3 Bf4 30.ef4 (30.Rf2?? Bc7 31.Rg2 Nf6–+) 30...Qe1 31.Kb2–+) 29.Qf4 Qg2 30.Ne2?? (30.Ke1 Qh1 31.Kd2 ed3 32.Nd3 Qg2 33.Qf2–+) 30...ed3 31.Kd3 (31.Ke1 de2 32.Re2 Qh1 33.Qf1 Qf1 34.Kf1 Rc8–+) 31...Qd5 32.Nd4 Ne5 33.Ke2 Qa2 34.Kf1 Qb1 (better is 34...Qd5!? 35.Qf5–+) 35.Kg2 f6! 36.Qf6 Qe4 37.Kf2 (37.Kf1 Ra6 38.Qf4 Qf4 39.ef4–+) 37...g3! 38.Kf1 (38.Kg3 Qg6 Double attack (38...Qe3 Deflection; 38...Qg6 Decoy)) 38...g2 39.Kg1 Qe3 (39...Ra6 40.Qh8 Kf7 41.Qh5 Rg6 42.Qh7 Ke8 43.Qh8 Kd7 44.Qh7 Kc8 45.Qh8 Kc7 46.Qh7 Kb6 47.Qg6 Ng6 48.Kf2 Nh4 49.Ne2 Qf3 50.Ke1 Qe3 51.Kd1 Nf3 52.Kc2 Qe2 53.Kc3 Qd2 54.Kc4 Qd4) 40.Kg2 Qd2 (40...Qe4 41.Nf3 Qf3 42.Qf3 Nf3 43.Kf3–+) 41.Kf1 Qd3 42.Kg2 Qg6 (42...Qe4!? 43.Nf3 Qg4 44.Kf2 Qf3 45.Qf3 Nf3 46.Kf3–+) 43.Qg6 Ng6 0–1. Turine,Oswaldo (1855) – Cristino,Felipe Borges (1990), Aberto do Brasil – Cidade de Campo Gran, 2015.

3.g3 Bf5 4.e3 e6 5.f4 (5.Nf3 Nf6+= (5...Bb4 6.Bg7 Nf6 7.Bh8+-)) 5...Nf6 (5...Bb4?? 6.Bg7 d4 7.Bg2 de3 8.Bh8+-) 6.b5 ½–½. Toll,A (2100) – Cadiou,Jacques, 14th ch–NATO, Hoevelte DEN, 2003.

3.h3 Be6 4.e3 h5 5.Nf3 (5.Bd3 Nf6+=) 5...Nf6 6.b5 (6.Bd3 g6+=) 6...g6 (6...Bf5 7.Be2=) 7.Nd4 (7.Be2 Bg7+=) 7...Qc8 (7...Bc8 8.Be2=) 8.a4 (8.c4 c6+=) 8...c5 (8...Bg7 9.c4=) 9.Ne6+= Qe6 10.c4 Nbd7 (worse 10...dc4 11.Qf3 Qb6 12.Bc4+-) 11.cd5 Qd5 12.Nc3 Qe6 (12...Qf5 13.a5+=) 13.d3 (13.a5 Bg7+=) 13...Bh6 (13...Bg7 14.a5+=) 14.Qf3 (14.a5 Bg7+=) 14...Rb8 (14...0-0-0 15.Qe2=) 15.Be2 (15.Nd5 Qd6 16.Nf6 Nf6 17.Bf6 ef6 18.Be2+=) 15...Qd6 (15...Ne5 16.Qg3 Bg7 17.d4+=) 16.0-0 (16.Ne4 Qe6+-) 16...Qe5 (16...Bg7 17.Rfd1+=) 17.Rab1 (17.Rfc1 Bg7+-) 17...0-0 (17...Bg7 18.Ne4 Qe6 19.Rfd1+-) 18.Ne4 Qe6 19.Nd2 (19.Nf6 Nf6 20.Rfc1 Nd5+-) 19...Bg5 (19...Nd5!? 20.Nc4 Bg7+=) 20.d4+- cd4 (20...Rfc8 21.Bc4 Qf5 22.Rbc1+-) 21.Bd4 Qa2 (21...h4 22.Bc4 (22.Ba7? Ne5–+) 22...Qd6 23.Ne4 Ne4 24.Qe4+-) 22.Nc4 Qa4 23.Nb2 (23.Rfc1 Rfc8+-) 23...Qa5 (23...Qc2 24.Nd3+-) 24.Nd3 (24.Ra1 Qd8+-) 24...Rfe8 (24...Rfc8 25.Ra1 Qb5 26.Rfb1+=) 25.Ne5 Nf8? (better 25...Ne5 26.Be5 Rbd8+-) 26.Ra1 Qc7 27.Rfc1 Qd6 28.Nc4 (28.Rd1 Red8+-) 28...Qc7 29.Be5 Qc5 (29...Qc8 30.Nd6 Qe6 31.Ne8 Qe5 32.Nf6 Bf6 33.Ra7+-) 30.Bb8 Rb8 31.Na5 (31.Ra5!? b6 32.Ra7 Ne6+-) 31...Qd5 32.Qg3 (32.Rd1 Qf3 33.Bf3 a6+-) 32...N6d7 (32...N8d7 33.Rd1 Qf5 34.Bd3+-) 33.Bf3 (better 33.Bc4!? Qf5 34.Nb3+-) 33...Qb5+- 34.Rcb1 Qe5 35.Qe5 Ne5 36.Bb7 Bf6 (36...Ne6+-) 37.Be4 (37.Ra3 Rd8+-) 37...Re8? (better 37...Rb1!? 38.Rb1 Ne6+-) 38.Ra3 (38.Nb3 Rd8+-) 38...Rc8 39.Rab3 (better 39.f4!? Nc4 40.Nc4 Rc4 41.Bf3+-) 39…Ned7 (39...Ned7 40.Nc6 Rc7+-). Sie – Cpu, AI Factory's Chess, 2016.

3.h4 Nf6 4.f3 Bd7 (4...Qd6 5.Bd4 Bd7 6.Bc5-/+) 5.a3 e6 6.d3 (6.e3 Bd6 7.f4 0-0=+) 6...Bd6 7.Rh3 (7.e4 de4 8.de4 Bg3 9.Kd2 a5-/+) 7...a5 8.c3 0-0 9.g4 e5 10.Bg2 e4 11.de4 de4 12.g5?? (better 12.h5-+) 12...Bh3 13.Kf1 Bg2 14.Kg2 Nd5 (better 14...ef3 15.Nf3 Ng4-+) 15.Qd5 ef3 16.Qf3 Nc6 17.b5 Ne5 18.Qb7 (18.Qe4 Re8-+) 18...Nc4 (18...Rb8 19.Qe4 Rb5 20.Bc1-+) 19.Bc1 Qd7 20.Qd5 (20.Qe4 Qb5 21.Nf3 Rfe8-+) 20...Qg4 21.Kf1 Bh2 (better 21...Rfd8 22.Qf3 Qh4-+) 22.Nf3 (22.Qd4 Qf5 23.Kg2 Bg1 24.Qg1-+) 22...Qh3 23.Kf2 Bg3 (23...Rad8 24.Qd4-+) 24.Kg1 Rad8 (24...Rad8 25.e4 Rd5 26.ed5 Ne5 27.Nbd2 Nd3 28.Ne4 Bf2 29.Nf2 Qg3 30.Kf1 Qf2) 0-1. Delboy Smith (1775) - rich1chess (2405), ChessWorld.net, 2015.

4.ba5 Nc6 5.h3= Bh5 6.Nf3 Nf6 (6...Na5 7.e3=) 7.a6 (7.e3 Na5 8.g4 Bg6=) 7...Ra6 8.e3 Ra8 (8...Rb6 9.Bf6 ef6 10.d4=) 9.Bb5 Nd7 (9...e6 10.g4 Bg6 11.Ne5=) 10.g4 (10.0-0 Na7 11.Be2 e6=) 10...Bg6 11.Bc6 bc6 12.d3 f6 13.Nd4 Qb8 14.Bc3 (14.Bc1 e5 15.Ne6 Kf7 16.Nf8 Rf8=) 14...Bf7 (14...e5 15.Nc6 Qb6 16.Nb4=) 15.Nc6 Qb6 16.Nd4 e5 17.Nf3 (17.Nf5 g6 18.Ng3 d4 19.ed4 ed4 20.Qe2 Ne5–/+) 17...Qc6=+ 18.Bd2 Bc5 19.Nh4 (19.g5 e4 20.Nd4 Bd4 21.ed4 ed3 22.cd3 0-0=+) 19...0-0=+ 20.Nf5 Rfe8 (20...Rfb8 21.Rf1=+) 21.Rg1 Ra4 (21...Be6 22.Qc1=) 22.h4 (22.g5 Bg6 23.Qf3 e4 24.de4 de4–+ (24...Rae4?! 25.Ng3=+; 24...Ree4?! 25.Ng3=+)) 22...Rb8 23.Bc1 (23.h5 Be6=+) 23...Kh8 (23...Be6 24.Nc3 Ra5 25.Qd2 Bf5 26.gf5=+) 24.h5 Be6 (24...e4 25.Rg3=+) 25.h6 (25.c3 Nb6=+) 25...g6 26.Ng7 Bf7 27.c3 (27.g5 fg5 28.Rg5 Rh4–+) 27...Bf8 28.d4 e4 29.f3 ef3 30.Qf3 Qa6 (30...Ra5 31.Qd1=+) 31.Rf1 c5 32.Rf2 (32.dc5 Bc5 33.Rf2 Rb6–+) 32...Rb6 (32...Bg7 33.hg7 Kg7 34.Rh2=+) 33.Qd1 (33.Rc2 Qa5=+) 33...Bg7 34.hg7 Kg7 35.Qf3 Be6 36.Qf4 Kg8 37.Qf3 Qd3 (37...Qa5 38.Qd1–/+) 38.Rd2=+ Qc4 (38...Rb1 39.Rd3 Ra1 40.Rd1 cd4 41.ed4+-; worse 38...Rb1 39.Rd3 Ra1 40.Rd1+-) 39.Rg2 (39.dc5 Qc5 40.Rd4 Rc4–/+) 39...Kg7 (39...cd4?! 40.ed4 Rc6 41.Rb2=+; 39...Rb3 40.Qd1–/+) 40.Qe2 (40.Qf4 Ra7 41.Rb2 Rb2 42.Bb2 Rb7–+) 40...Qe2 41.Ke2 h6 (41...f5 42.g5=+) 42.Kf3 (42.Nd2 g5–/+) 42...f5 43.gf5 Bf5 44.Rb2 Rf6 45.Nd2 g5 (45...Kf7 46.Kg2–/+) 46.Rb7 (46.Kg2 Kf7–/+) 46...Kg6 47.Kg2 h5 48.Rc7 (48.Bb2 cd4 49.cd4 Nb6–/+) 48...cd4 49.ed4 h4 50.Kg1 g4 51.c4 dc4 (51...h3 52.Kh2–+) 52.Bb2 (52.Rc4 Rc4 53.Nc4 Bd3–+) 52...Rb6 (52...Nb6!? 53.d5 Nd5 54.Rc4–+) 53.Bc3–/+ g3 54.d5 (better 54.Nc4 Rb3 55.Bd2–+) 54...h3–+ 55.Re1 Kg5 (55...Ra3 56.Rc4 Kh5 57.Nf1–+) 56.Re3 (56.Nc4 Rb5 57.Bd2 Kh4 58.Rc6–/+) 56...Kg4 57.Nf1 Rb1 (better 57...g2!? 58.Nd2 Rd6–+ (58...Ra3?! 59.Rc4 Kh5 60.Rf3–/+)) 58.Rg3–/+ Kf4 59.Bd2 Ke5 60.Kf2 (60.Rf3 Kd6 61.Rc4 Rc4 62.Rf5 Rc2–/+) 60...Rb2–+ 61.Ke1 Rd2! (61...Kd5 62.Rg5 Rb1 63.Kf2 Rf1 64.Kf1 Ke4+=) 62.Kd2=+ (62.Kd2 Nf6 Combination; 62.Nd2 h2 Passed pawn) 62...Nf6 (worse 62...Kd5 63.Ne3 Kd6 64.Rc4 (64.Nf5?! Kc7 65.Rh3 Kc6=) 64...Rc4 65.Nc4 Kc5 66.Rg5+-) 63.Re3 Kd5 (63...Ne4 64.Kc1 Kd5 65.Rf7–/+) 64.Rf3 (64.Rf7 Ra6–/+) 64...Ne4 65.Kc1 Nd6 (65...Kd6 66.Rg7 Ra5 67.Rg1–/+) 66.Rg3 (66.Re7 Kc6=+) 66...Ke5 67.Re7 (67.Rc5 Ke6=+) 67...Kf4–/+ 68.Ree3 Bg4 69.Rh3 (69.Kc2 Nb5–/+) 69...Bh3=+ 70.Rh3 Ke4 (70...Nb5 71.Nd2=+) 71.Nd2 Kd5 72.Rh5 ½–½. marekt – G_M, ChessWorld.net, 2003.

4.ba5 Nf6 5.h3 Bf5 6.e3=.

4.b5 Qd7 5.a4 =.

4.b5 e5 5.Be5+= Nd7 6.Bb2 Ngf6 7.Nf3 Bd6 8.e3 0-0 9.Be2 c6 10.Nc3 Ne4 11.Nd4 Be2 12.Qe2 Nc3 13.Bc3 Qc7 14.bc6 bc6 15.Nf5 Be5 16.d4 Bf6 17.0-0 Nc5 18.Be1 g6 19.Ng3 Rfe8 20.Qd1 Nb7 21.c4 dc4 22.Rc1 Nd6 23.Bc3 Bg7 24.Qd2 h5 (25.a4 h4+/–). Klaus Behrmann – NZ cricketer, ChessWorld.net, 2005.

4.b5 Nf6 5.Bf6 ef6 6.d4 Nd7 7.Nd2 Bd6 (7...Nb6 8.h3 Be6 9.Ngf3=+) 8.Ngf3 (8.c4 dc4 9.Nc4 0-0=) 8...Qe7 9.Qc1 0-0 10.e3 f5 11.Be2 (11.g3 Rfe8=+) 11...f4-/+ 12.Nf1 Nb6 13.h3 Bf3 14.Bf3 Qh4 15.g3? (better 15.c3!?-/+) 15...fg3-+ 16.Ng3 Bg3 17.fg3 Qg3 18.Ke2 Rae8 19.a4 (19.Qg1 Qf4 20.Rd1-+) 19...Nc4 20.e4 (20.Ra3 Na3 21.Qa3-+) 20...de4 21.Bg4 (21.Rf1 Qh2 22.Bg2 Qg2 23.Rf2 Qh3 24.Qf4-+) 21...Qg2 22.Ke1 Qh1 23.Ke2 (23.Kf2 Qh2 24.Ke1 Qg1 25.Ke2 Qg2 26.Ke1 e3 27.c3 e2 28.Qf4 Qg1 29.Qf1 ef1Q) 23...Qg2 24.Ke1 e3 (24...e3 25.Be2 Qf2 26.Kd1 Qg1 27.Bf1 Qf1) 0-1. petrobbo (2040) - charlburyman (2600), ChessWorld.net, 2013.

4.d3 ab4 5.ab4 Ra1 6.Ba1 e6 7.Nd2 Nf6 (7...Bb4?? 8.Bg7 Bc3 9.Bc3+-) 8.b5 Qd7 (8...Bc5 9.h3 Bh5 10.g4=) 9.h3= Bh5 10.Qb1 Bc5 11.Ngf3 Qe7 12.g3 Nbd7 13.Bg2 e5 (13...0-0 14.g4 Bg6 15.Nh4=+) 14.e4 (14.Nh4!? Rg8 15.g4+=) 14...de4=+ 15.de4 0-0 16.0-0 Bg6 (16...Rd8 17.Qb3=+) 17.Nh4= Ra8 18.Nc4?? (18.Ng6 hg6 19.Rd1=) 18...Nb6?? (better 18...Be4 19.Nf3 Bf3 20.Bf3 Qe6-+) 19.Ng6+/- hg6 20.Ne5 Nbd7 (20...Ra4!?+/-) 21.Nd7 Qd7 22.e5 Ne8 23.Rd1 Qe7? (23...Qf5 24.Bd4 Bd4 25.Rd4 Qe5 26.Bb7 Rb8+=) 24.Bb7+- Rb8 (24...Ra3 25.Kg2+-) 25.Bc6 Qg5 26.Kg2 Qf5 27.Rd2 f6 (27...Kh7 28.Qd1+-) 28.Qe1 (28.Qb3 Kf8+-) 28...fe5 29.Qe5 Qe5 30.Be5 Nf6 (30...Nd6 31.Rd5 Ba3 32.f4+-) 31.g4 (better 31.Bc7!? Rc8 32.Bf4 Bb4+-) 31...Bb6 32.f3 (32.g5 Nh5+-) 32...Kf7 (32...g5 33.c4+-) 33.c4 (33.g5 Ne8+-) 33...Ke6 (33...g5+-) 34.Kg3 (better 34.f4+-) 34...Ke5= 35.Re2 (35.f4 Ke6=) 35...Kd6 36.h4 (36.f4 Kc5 37.Re7 Rg8=) 36...Kc5 (36...Rf8 37.Kh3=+) 37.Rc2 (37.g5!? Nh5 38.Kg4=+) 37...Ne8 38.Bd5 (38.Kf4 Kb4=+) 38...Nd6-/+ 39.Rd2? (39.Be6 Ra8-/+) 39...Re8 (better 39...Nc4 40.Bc4 Kc4-+) 40.Re2?? (better 40.Rd3-/+) 40...Re2-+ 41.h5 (41.Kf4 Nc4 42.Bc6 Kd6-+) 41...Rd2 (41...gh5 42.gh5 Nc4 43.Bc6-+) 42.hg6 Nf5! 43.gf5 Rd5 44.cd5 Kd6?? (better 44...Kd5 45.f6 Bd4 (45...gf6?? 46.g7+-) 46.fg7 Bg7=) 45.f6+/- Ke5?? (better 45...Bd4 46.f7 Ke7+/-) 46.fg7+- Kf6 47.g8Q Ke5 48.Qf7 (48.Qf7 Kd4 49.g7+-) 1-0. Zobbie (2430) - universe64 (2360), lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2 a5)

4.Be5 a5 5.ba5 (5.b5 Nf6+=) 5...Nc6= 6.Bb2 Nf6 7.Nf3 Bd6 8.e3 Ra5 9.Be2 0-0 10.c4 (10.0-0 Re8+=) 10...dc4= 11.Nc3 (11.Bc4!? b5 12.Be2+=) 11...Be6 (11...Bf3 12.Bf3 Ne5 13.0-0=+) 12.Qc2 (12.d3 cd3 13.Bd3 Qa8=+) 12...Qe7 13.Ng5?? (better is 13.0-0=+) 13...Rg5–+ 14.Bf3 Bf5 15.Qd1 Ne5 16.0-0 Bh3 17.Nd5 Nd5 18.Bd5 Rg2 19.Kh1 Rh2 20.Kh2 Nf3 21.Kh3 Qh4 22.Kg2 Qg4 (23.Kh1 Qh3) 0–1. mgriffin (1635) – bighead (2130), net–chess.com, 2001.

4.Be5+= Nf6 5.Nc3 Nbd7 6.Bf4 d4 7.Nb5 Nd5 8.Bg3 Qf6 9.Nc7 Nc7 10.Bc7 Rc8 11.Bg3 h5 12.h3 h4 13.Bh2 (13.hg4?? hg3 14.Nf3 Rh1–+) 13...Bf5 14.Rc1 a5 15.Nf3 ab4 16.a4 Rc5 17.e3 (17.Bf4 Bd6 18.Bd6 Qd6+/–) 17...de3+= 18.fe3 Bd6 19.Bd6 Qd6 20.Kf2 (20.Bb5 Qg3 21.Kf1 Be4+/–) 20...Qc7 21.Nd4 b3 22.Nf5 Rf5 23.Kg1 b2 (23...Qg3 24.Qg4 Qg4 25.hg4+/–) 24.Rb1+/– Qg3 25.Qg4 Qf2 26.Kh2 Nf6 27.Bb5 (27.Qg7?? Rh7 28.Bb5 Ke7 29.Qf6 Rf6–+) 27...Kd8 28.Qe2 (28.Qg7? Rg8 29.Qg8 Ng8–+) 28...Rh6 (28...Qg3 29.Kg1+-) 29.Rhf1 (< 29.Rb2 Qg3 30.Kg1 Ne4+/–) 29...Qe2 30.Be2 Rf1 31.Bf1 (31.Rf1?! Ne4 32.Rb1 Rb6=) 31...Ne4 32.Rb2 b6 33.Bd3 Nc5 34.Bc4 f6? (34...Ne4 35.d4 f5+-) 35.Rb6 Na4 36.Ra6 Nc5 37.Ra8 Ke7 38.Ra7 Kf8 39.Bd5 g5 40.d4 g4 41.hg4 f5 42.gf5 Rd6 43.c4 Nd7 44.Be6 Nf6 45.Rf7 (45...Ke8 46.Rf6+-) 1–0. kolya (2055) – aks (1900), GameColony.com, 2002.

4.b5 Nd7 5.Nf3 Bd6 6.d4 (6.Nc3 Ngf6 7.h3 Bf5=+) 6...ed4 (6...e4 7.Ne5 Ngf6 8.Ng4 Ng4 9.e3-/+) 7.Qd4 Ngf6 8.Nbd2 (8.Nc3!? c5 9.bc6 bc6 10.Qe3 Kf8 11.Ba3 Ba3 12.Ra3-/+) 8...0-0-/+ 9.e3 c5 10.Qc3 Re8 11.Be2 d4! 12.ed4?? (better 12.Qb3-/+) 12...Nd5-+ 13.Qb3 (13.Qa3 Nf4 14.0-0-0 Ne2 15.Kb1 a6-+) 13...Nf4 14.Ne5 (14.0-0 Ne2 15.Kh1 cd4 16.Rfe1-+) 14...Ne5 (14...Be2 15.Qf7 Kh8 16.Qf4+=; worse 14...Be5 15.Bg4 Bd4 16.Kf1-+) 15.de5 Be5 (15...Be5 16.0-0-0 Bb2 17.Qb2 Be2-+) 0-1. foytik (2045) - FraGer68 (2480), Rated Blitz game, lichess.org, 2015.

4.Be5 Nc6 5.Bb2 Nb4 6.Nf3=+.

4.Be5 f6 5.Bc3 (5.Bg3 Bb4 6.c3 Ba5=) 5...Bd6 (5...d4!? 6.Bb2 Bb4=) 6.b5 Be5 (6...Ne7 7.Nf3=) 7.Nf3+= Bf3 8.gf3 Nd7 (8...d4 9.Bb2+=) 9.e3 Nc5?? (9...Qe7 10.f4 Bc3 11.Nc3+/-) 10.Be2?? (10.d4 Bd4 11.Qd4 Ne6+-) 10...Qd6? (10...d4 11.Bd4 Bd4 12.c3+=) 11.f4?? (better 11.d4 Ne6 12.de5 fe5 13.a5+-) 11...Bc3+= 12.Nc3 Ne7 (12...d4 13.Nb1+=) 13.Bf3 Nf5? (better 13...0-0-0!?+=) 14.Nd5 (14.d4 Nd7 15.Nd5 0-0-0+-) 14...0-0-0 15.c4 Ne7 (15...Nh4 16.d4 Nf3 17.Qf3 Nd3 18.Kd2+-) 16.Ne7 (16.d4!? Ne6+-) 16...Qe7 17.d4 Ne6 (17...Ne4 18.0-0+-) 18.0-0 Qf7 (18...g5 19.Bg2 Rdg8 20.f5+-) 19.Bg4 (better 19.Bd5 Qg6 20.Bg2 Rde8+-) 19...Qg6? (19...f5 20.Bh5 g6 21.Bf3 Nd4 22.ed4 Qc4 23.d5+-) 20.Kh1 (better 20.f5 Qg5 21.f4 Nf4 22.ef4 Qh4+-) 20...Rhe8?? (better 20...f5 21.Bf3 Nc5+-) 21.f5 Qg5 22.fe6 h5 (22...Kb8 23.Rg1 Qh4 24.Qf3+-) 23.Bh3 Qh4 (23...Kb8 24.Qf3 Rd6 25.a5+-) 24.Qf3 g5 (24...f5 25.Bf5 Kb8 26.a5+-) 25.e7 Kb8 (25...Rd7 26.Bd7 Kd7 27.Qd5 Ke7 28.Qb7 Kd8 29.Qa8 Kd7 30.Qc6 Kd8 31.Qf6 Kc8+-) 26.ed8Q (26.ed8R Rd8 27.Bg2 c6 28.Qf6 Qg4 29.Qd8 Qc8 30.Qg5 c5 31.Qg3 Ka8 32.dc5 h4 33.Qh4 a6 34.c6 Ka7 35.b6 Kb6 36.Rfb1 Kc7 37.Qe7 Kb8 38.Rb7 Ka8 39.Ra7 Kb8 40.Rb1 Qb7 41.Qb7) 26...Rd8 27.Qf6 (better 27.Bg2 c6 28.Qf6 Qg4 29.Qd8 Qc8 30.Qg5 c5+-) 27...Qe4 28.Bg2 Qe8 29.c5 (29.Qf3 c6+-) 29...h4 30.a5 White intends b6 (30.Qf3 c6 31.Rab1 Rd7 32.bc6 Rc7 33.Rb7 Ka8 34.Rc7 Kb8 35.Rb7 Kc8 36.Qf5 Kd8 37.c7 Ke7 38.c8Q Qd7 39.Qcd7) 30...g4 31.b6 ab6 32.ab6 h3 33.bc7 Kc7 34.Qb6 Kd7 35.Qb7 (35.Qd6 Kc8 36.Ra8) 35...Ke6 36.Ra6 Kf5 (36...Kf5 37.Qh7 Kg5 38.Qh6 Kf5 39.Qf6; 36...Qc6 37.Rc6 Kf5 38.Qf7 Kg5 39.Qf6 Kh5 40.Qh6). ClayPigeons (2125) - sulko978 (2065), Rated Bullet game, lichess.org, 2021.

4.Ra3? a6 (4...e6 5.Rg3 Nbd7 6.Nf3–+) 5.Rg3 (5.Nf3 e6–/+) 5...Bh5 6.Na3 e6 7.Qa1 (7.Nh3 Bb4 8.c3 Bd6 9.Rg7 Bg6–+) 7...Bb4 (7...Nc6 8.Nf3–+) 8.Rg7–/+ Ne4 9.Nb1 d4! 10.Nf3 (10.Bd4 Nc6 Decoy) 10...Nc6 11.c3 (better 11.g4 Bf8 12.gh5 Bg7 13.Rg1–+) 11...dc3 12.Nc3 (12.Bc3 Bc3 13.Nc3 Bf3 14.Ne4 Be4–+) 12...Bf3 13.gf3 (13.Qc1 Nc3 14.Bc3–+) 13…Qd2 0–1. Thermae – Vendelso, internet, 2020.

4.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.a4).

4.a4 cb5 5.ab5 Nf6 6.Nf3 e6 7.e3 Nc6?? (better 7...Nbd7=) 8.bc6+- bc6 9.Be2 Bd6 10.0-0 (10.Bf6 Qf6 11.Ra6 0-0+-) 10...Qc7 (10...Bf3!? 11.Bf3 Bh2 12.Kh2 Qb8 13.Kg1 Qb2 14.Nc3+/-) 11.h3+- Bf3 12.Bf3 Bh2 (12...e5 13.d4 e4 14.Be2+-) 13.Kh1 Bd6 (13...Be5 14.Be5 Qe5 15.d4+-) 14.c4! 0-0 (14...dc4 15.Qa4 Double attack (15.Qa4 Decoy)) 15.cd5 (15.Bf6 gf6 16.d4 Rfb8+-) 15...Nd5 16.Bf6?? (better 16.Qc2+-) 16...Nf6-/+ 17.Nc3 Be5 (17...Nd5 18.Qc2-/+) 18.Rc1 Bc3 19.Rc3 The isolani on c6 becomes a target 19...Rfd8 (19...Nd5 20.Bd5 ed5 21.Qa4=) 20.Rc6= Qe7 21.Qc1 Rab8 22.Rc7 (22.d4 Nd5+=) 22...Rd7= 23.Rc8 Rc8 24.Qc8 Rd8 25.Qc3 Qd7 (25...e5 26.d3=) 26.d4 Nd5 27.Qc2 Nb4 28.Qb1 (28.Qc5 Qa4+=) 28...Nd5 (28...a5 29.Be4 f5 30.Bf3=) 29.Be4 (29.Qa2 Rb8+=) 29...g6 (29...Nf6 30.Bd3=) 30.Qa1 Nf6 31.Bf3 Nd5 32.Rb1 Rc8 33.Qa5 Rd8 (33...h6 34.Kg1+=) 34.Ra1 Kg7 (34...Ra8 35.Qc5+/-) 35.Qa7 Qa7 36.Ra7 Rb8 37.Ra1 (37.Bd5 ed5 38.Ra5 Rd8+-) 37...Rb2+/- 38.Rc1 (38.Bd5!? ed5 39.Kg1+/-) 38...Nb4 39.g3?? (better 39.Kg1+=) 39...Nd3-/+ 40.Rf1 (40.Ra1 Nf2 41.Kg1 Nh3 42.Kh1 Ng5-/+) 40...Nf2-+ 41.Kg2 (better 41.Kg1 Nh3 42.Kh1-+) 41...Nd3?? (better 41...Nd1! 42.Kg1 Ne3-+) 42.Kg1=+ Rf2?? (better 42...f5=+) 43.Rf2+- Nf2 44.Kf2 Kf6 45.Ke2 Ke7 46.Kd3 Kf6 47.e4 e5 48.g4 ed4 49.Kd4 Ke6 50.Ke3 (50.g5 f6+-) 50...f6 51.h4 Kf7 52.Bg2 g5 (52...Ke6 53.g5+-) 53.Bf1 (better 53.hg5 fg5 54.e5+-) 53...gh4 54.Kf3 Kg6 (54...Kg7 55.Bc4+-) 55.Kg2 (55.Kf4!? h6+-) 55...Kh6 56.Be2 Kg5 (56...Kg6 57.Kf3+-) 57.Bf3 (better 57.Kh3+-) 57...f5?? (57...Kf4 58.Bd1 Ke4+-) 58.Kh3 (better 58.gf5 Kf6 59.Kh3+-) 58…f4 (58...f4+-). Jimito100 (1980) - mehmetaliparto (2115), Rated Bullet game, lichess.org, 2020.

4.Nf3 Bf3 5.e3 c5 6.Qf3 Nf6 7.b6 (better 7.c4+/-) 7...ab6= 8.Nc3 e6 9.Bb5 Nc6 10.0-0 Bd6 11.Rab1 0-0 12.a4 Nb4 13.Ba3 (better 13.Rfc1!?-/+) 13...Nc2-+ 14.Rfc1?? (14.Bb2-+) 14...Na3 15.Ra1 Nb5 16.ab5 Ra1 17.Ra1 e5 (17...Be5 18.Qe2-+) 18.Qe2 (18.Nd5 e4 19.Nf6 Qf6 20.Qf6 gf6 21.Ra4-+) 18...d4 19.ed4 ed4 20.Nd1 (20.Ne4 d3! 21.Qf3 Ne4 22.Qe4 Re8 23.Qb7 Re2-+) 20...Re8 21.Qf1 Qe7 (better 21...Ne4 22.Nb2 Nd2 23.Qd3-+) 22.Rc1 (22.Nb2 Bc7-+) 22...Qe5 (better 22...Ne4!? 23.Qe2 Qd8 24.Ne3 de3 25.de3-+) 23.g3 Qf5 (23...Ne4 24.Qe1 Qg5 25.f3 Qd2 26.Nf2 Qe1 27.Re1-+) 24.f4 (24.Nb2 g6-+) 24...Ne4 25.Nf2 (25.Qe2 Re6 26.Qg2 Qh5-+) 25...Nd2 26.Qd1 Ne4 (better 26...Re1 27.Qe1 Nf3 28.Kh1 Ne1 29.Re1-+) 27.Ne4 (27.Qd3 Qd5 28.Qe2 Nf6-+) 27...Qe4 28.Qf1 f5 (28...d3 29.Rd1 c4 30.h4-+) 29.Qf2 (29.Kf2 d3 30.Re1 Qd4 31.Kg2 Re1 32.Qe1 Qd5 33.Kf2 c4 34.Qe8 Bf8 35.h4 d2 36.g4 d1Q 37.Qe2 Bc5 38.Kg3 Qe2 39.h5 Qg4 40.Kh2 Qh4) 29...c4! 30.Rf1 (30.Rc4 Qb1 Double attack (30...Qd5 Decoy)) 30...Bc5 31.Qf3 (31.Qg2 d3 32.Kh1 d2 33.Qe4 Re4 34.Rb1 Re1 35.Kg2 Rb1 36.g4 d1Q 37.h3 Qe2 38.Kg3 Qf2) 31...d3 32.Kg2 Qe7 (32...Qf3 33.Kf3 d2 34.Ra1 c3 35.Kg2 c2 36.Ra7 d1Q 37.Ra8 Ra8 38.Kh3 c1Q 39.Kg2 Qf1) 33.Rd1 Rd8 (33...Qe2 34.Qe2 Re2 35.Kh3 d2 36.g4 c3 37.Ra1 c2 38.Ra8 Kf7 39.Kh4 c1Q 40.Rf8 Bf8 41.gf5 d1Q 42.Kg4 Qg1 43.Kh4 Rh2) 34.Qf1 Qd7 35.Kh3 Qd5 36.Kh4 Qe6 (36...Be7 37.Kh3 Rd6 38.g4 Rh6 39.Kg3 Bh4 40.Kh3 Be1) 37.Kh5 Qf6 (37...Qh6) 38.g4 (38.Qd3 Qh6) 38...g6 (38...Qh6) 39.Kh6 Bf8 0-1. TimC (2395) - alias1 (2540), Rated Bullet game, lichess.org, 2015.

4.Nf3 Bf3 5.ef3 e5 (5...Nf6 6.Be2=) 6.Be2 (6.Be5 Qe7 7.Qe2 Nd7 8.Bc7 Rc8+/-) 6...d4 (6...Qg5 7.0-0=) 7.c3 (7.f4 ef4 8.Bf3 c6+=) 7...Bc5 8.cd4 Bd4 9.Nc3 Bc3 (better 9...Nf6!?=+) 10.Bc3+= Nf6 (10...Qg5 11.0-0+/-) 11.Be5+/- 0-0 12.Bc3 Qd7 (12...Nd5 13.0-0+=) 13.0-0 Re8 (13...Nd5 14.Re1+/-) 14.a4 (14.Bf6 gf6 15.Re1 a6+/-) 14...c6 (14...Qd6 15.Re1+/-) 15.Rc1 (15.Bf6 gf6 16.Re1 cb5 17.ab5 a6+-) 15...cb5 (15...Nd5 16.Re1+/-) 16.ab5 (16.Bf6 gf6 17.Bb5 Nc6+-) 16...Qe6 17.Ra1?? (better 17.Re1+/-) 17...Qe2-+ 18.Qe2 Re2 19.Bf6 gf6 20.Rfe1 (20.Rfd1 Re5 21.Rab1 a6-+) 20...Re1 (20...Rd2 21.Re8 Kg7 22.g4-+) 21.Re1 Nd7 22.Re7 Nc5 (22...Rd8 23.h3-+) 23.d4? (23.Kf1 Rc8-+) 23...Nd3?? (better 23...Rd8-+) 24.Rb7-/+ Rc8 (24...Nf4!?-/+) 25.g3 (25.h3!?=) 25...Rc1 26.Kg2 Ne1 27.Kh3 Nf3 28.Ra7 (28.d5 Rb1 29.d6 Rd1=+) 28...Ng5 (28...Rb1!? 29.Rb7 Nd4-+) 29.Kg4=+ Rh1?? (better 29...Rb1!? 30.Rb7 Ne4=+) 30.h4 (30.b6 Rb1 31.h4 Ne4=+) 30...Ne4 31.h5 (31.Kf5 Nf2 32.b6 Rb1=) 31...Nf2 (better 31...Nd6 32.b6 Rb1=+) 32.Kf3+/- Nd3 33.g4 (better 33.b6!? Kg7 34.b7+/-) 33...Kg7 34.b6 Nc5?? (34...Rh3 35.Ke4 Nf2 36.Kd5 Ng4 37.b7+/-) 35.b7 (better 35.dc5 f5 36.b7 fg4 37.Kg4 Rg1 38.Kf4 Rf1 39.Ke4 Re1 40.Kd3+-) 35...Rb1?? (better 35...Nd7=) 36.dc5+- h6 (36...Rb3 37.Ke4 f5 38.gf5 Rb4 39.Kd5+-) 37.Ke4 (37.c6 Rb3 38.Kg2 Rb2 39.Kh3 f5+-) 37...Rb2 (37...f5 38.gf5 Rb4 39.Kd3 Rb3 40.Kc4+-) 38.c6 Rb4 39.Kf5 Rb5 40.Kf4 Rb4 41.Ke3 (41.Kg3 f5 42.c7 f4 43.Kf3 Rb3 44.Kf4 Rb4 45.Kg3 Rb3 46.Kh4 Rb1+-) 41...Rb3 42.Kd4 (better 42.Kf2!? Rb2 43.Kg3 f5+-) 42...Rb4 43.Kc5 Rb1 44.c7 Rc1 45.Kd6 Rd1 46.Ke7 Re1 47.Kd8 Rd1 48.Kc8 Rc1 49.b8Q f5 50.Qb2 Kf8 (50...Rc3 51.Qc3 Kg8 52.Kb8 Kh7 53.c8Q fg4 54.Rf7) 51.Qc1 (51.Qh8 Ke7 52.Qe5 Kf8 53.Ra8 f6 54.Kd7 Kf7 55.Qe7) 51...fg4 (51...Ke7 52.Kb8 Ke6 53.c8Q Ke5 54.Qf5 Kd4 55.Qcc5) 52.Qh6 Ke7 53.Kb8 (53.Ra6 Ke8 54.Qh8 Ke7 55.Qd8) 53...g3 (53...f6 54.c8Q Kd6 55.Qf6 Kd5 56.Qcc6) 54.Qf4 (54.c8Q) 54...Ke6 55.Qg3 (55.c8Q Kd5 56.Qcc4) 55...f5 (55...Kd5 56.Ra5 Kd4 57.c8Q f5 58.Qe5 Kd3 59.Qcc3) 56.Qf4 (56.c8Q Kd5 57.Qf5 Kd4 58.Qgd3) 56...Kd5 (56...Kf6 57.Ra6 Kf7 58.c8Q Kg7 59.Qfc7) 57.Qf5 (57.Ra6 Kc5 58.c8Q Kd5 59.Qcf5) 57...Kc4 (57...Kd4 58.c8Q Ke3 59.Qc3 Ke2 60.Qff3) 58.Ra6 (58.c8Q Kd4 59.Qcc5) 58...Kb3 (58...Kd4 59.c8Q Ke3 60.Qc3 Ke2 61.Qff3) 59.Re6 (59.c8Q Kb4 60.Qb1) 59...Ka2 (59...Kb4 60.Rb6 Kc3 61.Qd5 Kc2 62.c8Q) 60.Qf3 (60.Rb6 Ka3 61.Qa5) 60...Ka1 (60...Kb1 61.Qf2 Kc1 62.Re1) 61.Re2 Kb1 62.Qf1 1-0. Jimito100 (1955) - mehmetaliparto (2160), Rated Bullet game, lichess.org, 2020.

4.Nf3 Nf6 5.e3 Nbd7 6.Be2 e5 7.Ne5+/- (7.Be5? Bf3 8.Bf3 Ne5-+) 7...Ne5 8.Be5 Nd7 9.Bc7?? (better 9.Bd4 Be2 10.Qe2+/- (worse 10.Ke2 a6=)) 9...Bb4?? (better 9...Be2 10.Bd8 Bd1 11.Kd1 Rd8-/+) 10.Bd8+- Be2 11.Qe2 Rd8 12.a3 (12.Qd3!? Nf6+-) 12...Ba5 13.0-0 0-0 14.d4 f5 (14...Nb6 15.Nd2+-) 15.Nd2 Nf6 16.Nf3 Ng4 (16...Rc8 17.Qd3 Ne4 18.Qb3+-) 17.c4 dc4 (17...Nf6 18.Rac1+-) 18.Qc4 Kh8 19.h3 (better 19.Ng5 Rd7+-) 19...b6 (19...Nh6 20.Rac1+-) 20.hg4 h5 21.Ne5 fg4 22.Ng6 (22.Nf7!? Kh7 23.Nd8 Rd8+-) 22...Kh7 23.Nf8 Rf8 24.Rad1 Rf6 25.d5 Kh6 26.d6 Rd6 27.Rd6 g6 (27...Kh7 28.Qe4 Kg8 29.Qe8 Kh7 30.Qh5 Kg8 31.Rd8) 28.Qe6 (28.Qf4 Kh7 29.Rd7 Kg8 30.Qb8) 28...Bc3 (28...Kg7 29.Qf6 Kg8 30.Rd8 Kh7 31.Rh8) 29.Qg6 1-0. Jimito100 (1990) - MRTCBNKY (2075), Rated Bullet game, lichess.org, 2020.

4.f3 Bf5 5.g4 Bg6 6.e3 =+.

4.f3 Bf5 5.g4 Bg6 6.Nh3 =+.

4.f3 Bh5 5.e3 Nf6 (5...Nd7 6.g4 Bg6 7.h4=+) 6.Bd3 (6.Ne2 e6 7.a3 Bd6=) 6...e6 7.Bf6 (7.a3!?=+) 7...Qf6–/+ (7...gf6?! 8.a3=+) 8.Nc3 (8.c3 Bd6–/+) 8...Bb4–+ 9.Qb2 b5?? (better is 9...Bc3 10.Qc3 Qc3 11.dc3 e5–+) 10.Qb4+- Nd7 11.Qd6 Rc8 12.e4 de4 13.Be4 Nb8? 14.Nge2 b4?! 15.Na4 Qa1–+ 16.Kf2 Qh1 17.Nd4 Qb1 18.Nc6 Qa2?? 19.Nb8 Qa4 20.Bc6 Rc6 21.Nc6 Qc2 22.Qe7 1–0. islanderfan (1620) – sammyo (1970), net–chess.com, 2006.

4.f3 Bh5 5.e3 (5.Bd4 Nf6=+) 5...Nf6 (5...Nd7 6.c4=+) 6.Bd3 (6.g4 Bg6 7.h4 Qc7=+) 6...e6 7.Bf6 (7.a3!?=+) 7...Qf6–/+ (7...gf6?! 8.a3=+) 8.Nc3 (8.c3 Bd6–/+) 8...Bb4–+ 9.Qb2 b5?? (better is 9...Bc3 10.Qc3 Qc3 11.dc3 b5–+) 10.Qb4+- Nd7 11.Qd6 Rc8 12.e4 de4 13.Be4 Nb8 14.Nh3 b4? 15.Qf4 Qf4?? 16.Nf4+- bc3 17.Nh5 cd2 18.Kd2 0-0 19.Bd3 Rcd8 20.Ng3 Na6 21.Ke2 Nc5 22.Bc4 Na4 23.Rab1 Nc3+= (24.Ke3 Nb1 25.Rb1 Rd7+=). sammyo (1970) – islanderfan (1620), net–chess.com, 2006.

4.Nf3 Nd7 =+.

4.h3 Bf5 =+.

4.b5 Nd7 5.e3 =+.

4.b5 Nf6 5.e3 Nbd7 6.Nf3 Bf3 7.gf3 Ne5 8.Be2 0-0-0 9.d4 Nc4 10.Bc4 dc4 11.c3 Qd5–/+ 12.Nd2 Qb5 13.a4 Qc6 14.Qd1 e5! 15.Qc2 ed4 16.cd4 Bb4 17.Bc3 Nd5 18.Bb4 Nb4 19.Qc3 Nd3 20.Kf1= a6 21.Qc4 Qc4 22.Nc4 Nb4 23.Rg1 g6 24.Ne5 Rhf8 25.Rb1 a5 26.Kg2 f6 27.Nc4 b6 28.Rgc1 Kb7 29.Na3 c6 30.Rc4 Rc8 31.Nc2= Nc2 32.Rc2 Rfd8 33.Rcb2 b5 34.ab5 c5 35.dc5 Rc5 36.b6 Ra8 37.Rd2 a4 38.Rd7+/– Ka6 39.Rd6 Kb7 40.Rf6+- a3 41.Rf7 Ka6 42.b7 Rb8 43.Rd7 a2+= 44.Ra1 Rc2 45.Rh7 Ka5 46.Rd7 Ka4 47.e4 Ka3 48.e5 Rb2 49.Rd3 Rb3 50.Rd2 Rb2 51.Rd6 R8b7 52.Rg6 Re2? 53.Ra6+- Kb3 54.f4 Rc7 55.Kg3 Rcc2 56.e6 Rf2 57.e7 Rg2 58.Kh3 Rh2 59.Kg4 Rcg2 60.Kf5 Rh5 61.Kf6 Rh6 62.Kf7 Rh7 63.Ke8 Rh8 64.Kd7 Re2 65.f5 Rh7 66.f6 Rf7 67.R1a2!! Ra2 68.Ra2 Ka2 69.Ke6 Rh7 70.e8Q# 1–0. Sundin,Thommy (1825) – Glas (1965), Sundsvall Sweden, 1987.

4.c4= Qb4 5.cd5 Bf5 6.Bc3 Qc5 7.d3 Qd5 8.e4+/– Qe6 9.Qb2 Nc6 10.Bg7 Bg7 11.Qg7= Be4?? 12.Qh8+- Bg2 13.Ne2 Bf1 14.Kf1 Kd7? 15.Rg1+- Qf6 16.Qg7 h5 17.Nbc3 Qg7 18.Rg7 Rf8 19.Ne4 Kc8 20.Rd1 Kb8 21.d4 Nh6 22.Rh7 Ng4 23.h3 Nf6 24.Nf6 ef6 25.Rh5 a6 26.h4 b6 27.Rh7 Kb7 28.h5 Nb4 29.Nc3 f5 30.d5 Kc8 31.h6 Kb7 32.Rd4 a5 33.Rf4 Kb8 34.Rf5 f6 35.d6! cd6 36.Rg7 Re8 37.h7 Rc8 38.Rg8 Kb7 39.Rc8 Kc8 40.h8Q (40...Kd7 41.Qf6 Kc7 42.Nb5 Kc6 43.Qd6 Kb7 44.Qe7 Kc6 45.Nd4#) 1–0. MrkT – Flak, internet, 2005.

4.c4 e6 5.a3 a5 =.

4.Nf3 Bf3 5.gf3 e5=+ 6.f4 c5 (6...ef4 7.Bg2 c6 8.Qc2=+) 7.Qa4 (7.fe5 cb4 8.Bg2 Nc6=) 7...Nc6 (7...Qd7!? 8.Qd7 Nd7 9.fe5 Ne5=) 8.b5+= Nce7 9.fe5 Ng6 10.e3 (10.Bg2 Qd7+=) 10...Ne5= 11.ed4 cd4 12.b6 (12.Qb3 Rc8=) 12...Qd7 (12...Nc6 13.ba7 Ra7 14.Qb3=) 13.Qd7= Kd7 14.ba7 Nd3?? (better 14...Bc5=) 15.Bd3+- Nf6 (15...Bc5+-) 16.Bd4 Rd8 (16...Be7 17.Nc3 Rhd8 18.Rb1+-) 17.Bb6 (better 17.Nc3 Bb4 18.Bf6 gf6 19.Nd5+-) 17...Kc6 (17...Ra8+-) 18.Bd8 Bc5 19.Bf6 (better 19.a8Q Re8 20.Kf1 Rd8 21.Qd8+-) 19...gf6 20.Kd1 (20.Be4 Kb6 21.Nc3 Ka7+-) 20...Bd4 (20...Ba7 21.Be4 Kd6 22.Nc3 Bf2 23.Bb7+-) 21.Nc3 Bc3 22.dc3 Rd8 23.Kc2 (23.Kc2 Ra8 24.Bh7 Ra7 25.h4+-) 1-0. ClayPigeons (2150) - heavily_depressed (2105), Rated Bullet game, lichess.org, 2021.

4.Nf3 Nf6 5.Nd4 e5 6.Nf3 e4 (worse 6...Bb4 7.Ne5 0-0 8.Qb3+/-) 7.Nd4 Be7 8.Qb3 0-0 9.e3 c6 (9...a5 10.f3 Bd7 11.ba5+=) 10.Be2 (10.d3 a5 11.ba5 Nbd7+=) 10...Be2= 11.Ne2 a5 12.a3 (12.ba5 Nbd7 13.Bd4 Qa5+=) 12...a4 (12...Na6!?=) 13.Qc2+= Qd6 (13...c5 14.b5+/-) 14.Nbc3 Qe6 (14...Qd3 15.Qd3 ed3 16.Nc1+/-) 15.Na4 b5 (15...Nbd7!?+/-) 16.cb5+- cb5 17.Nc5 (17.Nac3 Rc8+-) 17...Qc8 (17...Rc8 18.Nf4 Qc6 19.Bf6 Bf6 20.Rd1+/-) 18.Rc1 (18.Bf6 Bf6 19.Ra2 Nd7 20.Ne4 Qc2 21.Rc2 Ra3+-) 18...Qg4 (better 18...Nbd7+-) 19.0-0?? (19.Ng3 Rc8 20.Bf6 gf6 21.Qe4 Qe4 22.Nge4 Ra3+-) 19...Nc6?? (better 19...Qe2 20.Ne4 Rd8+=) 20.Ng3+- h5 (20...Rfc8 21.Nge4 Nd5 22.f3+-) 21.Bf6 Bf6 22.Qe4 (22.Nce4 Ne5+-) 22...Qe4 (22...Rfc8 23.Qg4 hg4+-) 23.Nge4 (better 23.Nce4 h4 24.Nf6 gf6 25.Rc6 hg3 26.Ra1+-) 23...Bb2 24.Rc2 Ba3 25.Nd7 (25.Nb7 Rfb8 26.Rc6 Rb7+/-) 25...Nb4 26.Rc3 (better 26.Rc5!? Rfd8 27.Nb6+-) 26...Rfd8+/- 27.Nb6 Nd5 (27...Ra6 28.d4+/-) 28.Nd5 (better 28.Na8!? Nc3 29.Nc3+-) 28...Rd5+/- 29.d4 b4 (29...f5 30.Nc5+/-) 30.Rb3 f5 31.Nc5 Re8 (31...Kf7 32.Nd3+-) 32.Rfb1 (32.Nd3+-) 32...h4 (32...Rc5 33.dc5 Rc8 34.Kf1+/-) 33.g3 (better 33.Na6!? Rc8+-) 33...hg3+/- 34.hg3 Kf7 (34...Rc5 35.dc5 Rc8 36.Kg2+/-) 35.Kg2 (35.Na6 Ra5 36.Nb4 Bb4 37.Rb4 g5+-) 35...Kg6? (35...Rc5 36.dc5 Rc8 37.g4+/-) 36.Kf3 (36.Na6 Re7+-) 36...Kg5 (better 36...Rc5 37.dc5 Re5+-) 37.Nd3 (37.Rb4?! Bb4 38.Rb4 Kh5+/-) 37...Kf6 38.Nf4 (38.Nb4!? Bb4 39.Rb4 Rc8+-) 38...Rd6 (better 38...Ra5+-) 39.Nh5 (better 39.Ra1+-) 39...Kg5+= 40.Nf4 Kf6 41.Nh3 (better 41.Ra1+-) 41...g5 42.Ng1 Kg6 (42...Rc6 43.g4+= (worse 43.Rb4 g4 44.Kg2 Bb4 45.Rb4 Rc2=+)) 43.Kg2 Rh8 (43...Kf6!?+/-) 44.Nf3+- (44.Rb4?! Bb4 45.Rb4 g4+=) 44...Kh5?? (better 44...f4+-) 45.Rh1 (45.Rh1 Kg6 46.Rh8+-) 1-0. ClayPigeons (2145) - WWALTER1492 (2110), Rated Bullet game, lichess.org, 2020.

4.a3 e5 5.Nd2 f5 (5...Nf6 6.d4 e4 7.c4=+) 6.c4 (6.f3 Bh5=) 6...c6 (6...d4 7.Ngf3=+) 7.Ngf3 (7.cd5 cd5 8.f3 Bh5+=) 7...Nd7 (7...d4 8.c5 Qe6 9.e3 de3 10.fe3=) 8.h3 Bh5 9.Qc2 (9.e4 fe4 10.de4 d4=) 9...Ngf6 (9...d4 10.e3 de3 11.fe3=) 10.e3 Be7 (10...Qe6 11.cd5 Nd5 12.e4 Bf3 13.Nf3+=) 11.Be2 (11.cd5 cd5 12.Qc3 e4+=) 11...Bf3 (11...0-0 12.0-0=) 12.Nf3 0-0 13.Nd2 (13.c5 Qb8+=) 13...e4 (13...a5 14.c5 Qc7 15.0-0=) 14.de4 (14.0-0 Ne5=) 14...fe4= 15.0-0-0 (better is 15.Bd4!?=) 15...a5–/+ 16.c5 (16.cd5 cd5 (16...Qd5?? 17.Bc4+-; < 16...ab4 17.dc6 ba3 18.Bf6 Nf6 19.cb7=) 17.Qb3 ab4 18.ab4 Rfc8 19.Kb1 Qe6–/+) 16...Qc7 17.g4 (17.Nb3!?–/+) 17...ab4–+ 18.ab4 b6 19.Nb3 (19.cb6 Nb6 20.b5 Rfc8–/+) 19...bc5 (19...Ra2 20.cb6 Qb6 21.Kb1–+) 20.bc5 Ra2 21.Qc3 Ne8 22.f4? Qa7 23.g5 Nc5 24.Nc5 Bc5 25.Kc2 Ba3 26.Ra1 Qa4 (27.Kb1 Bb2 (27...Rb2? 28.Qb2 Bb2 29.Ra4+-) 28.Ra2 Qa2 (28...Bc3 29.Ra4 Bd2 30.Ra3+=) 29.Ka2 Bc3–+; 26...Bb2?! 27.Ra2 Qa2 28.Qb2–+; 26...Rb2?! 27.Qb2 Qe3 28.Ra3 Qe2 29.Kc1 Qb2 30.Kb2 Rf4 31.Rc1–+) 0–1. Baluch,Wieslaw – Wisniewski,Jan, corr 2. AMM Poland, 1993.

4.Qd2 Nc6 5.a3 Nf6 6.e3 (6.h3 Bf5=+) 6...d4 (6...0-0-0–/+) 7.e4 (7.Nf3 Bf3 8.gf3 g6=+) 7...a6 (7...0-0-0 8.h3 Bh5 9.Be2=+) 8.Be2 (8.h3 Bd7–/+) 8...g6 (8...0-0-0 9.h3 Be2 10.Qe2=+) 9.Qd1 Be2 (9...Be6 10.Nf3 Bg7 11.Nbd2=+) 10.Ne2 Bh6 11.Bc1 (11.Nd2 e5=+) 11...Bg7 (11...Bc1 12.Qc1 b5 13.Nd2–/+) 12.0-0 Ng4 13.Bf4 Be5 14.Bg3 0-0 (14...Bg3 15.Ng3 h5 16.Nd2=+) 15.Nd2 Bg3 16.Ng3 Qf4 17.Nc4 (17.Nf3 Rad8=+) 17...b5 18.Na5 Na5 19.ba5 c5 20.Qe2 (20.Qc1 Qc1 21.Rfc1 Ne5–/+) 20...Ne5 21.a4 ba4 22.Ra4 Rab8 23.Ra2 Rb7 24.c3 dc3 25.Qc2 Rd7 26.Qc3 Nd3–+ 27.Qd2 Qc7 28.Rd1 Ne5 29.Qe2 Rd1 30.Qd1 c4 31.h3 Nd3 32.Qd2 Rb8 33.Qh6?? c3 34.Ra1 c2 35.Ne2 Rb1 36.Rb1 cb1Q 37.Qc1 Nc1 38.Kh1 Ne2# 0–1. carel_jan – pierre, internet, 2009.

4.Qd3 (4.a3 e4=+) 4...e4 (4...Bb4 5.c3 Bd6 6.Qg3–/+) 5.Qg3 (5.Qb5!? Nc6 6.a3=+) 5...Nf6–/+ (5...Bb4 6.c3+/–) 6.a3 Bd6 7.Qb3 0-0 8.e3 c6 9.c4 a5 (9...Be6 10.Nd2–/+) 10.c5=+ Bc7 11.b5 cb5 (11...a4 12.Qc3 Ba5 13.Nd2 Bc3 14.Bc3–+) 12.Bb5 Nc6 13.Nc3 Be6 14.Nge2 h6 (14...Na7 15.Ba4=) 15.Ba4 Ng4 16.h3 Ne3?? (better is 16...Nf6=) 17.fe3+- Qg5 18.Kd2 Ne5? 19.de5 Be5 20.h4 Qg2 21.Rag1 Qf3 22.Nd4 Bd4 23.ed4 Qd3 24.Ke1 e3 25.Ne2 Qd2 26.Kf1 (26...b5 27.cb6+-) 1–0. Grehl,Siegfried – Gross,Wilhelm, corr, 1991.

4.h3 Bf5 (4...Bb4? 5.c3 Be6 6.cb4 ed4 7.Qd4+-) 5.de5 Bb4 6.Nd2 Nc6 7.Ngf3 d4 8.a3 Ba5 9.g3 Nge7 10.Bg2 a6 (10...Nd5!?=) 11.0-0+= Bc3 12.Rb1 Bb2 13.Rb2 Qc8 14.Nb3 Bh3 15.Bh3. parektheim – guest_mas0101, internet, 2015.

4.e3 Nc6 5.a3 e5 6.Be2 f6 (6...Bd6 7.0-0=) 7.0-0 Bd6 8.d4 e4 9.Nh4 (9.Nfd2 Be2 10.Qe2 b5+=) 9...Be6 (9...f5 10.g3=+) 10.Bh5 (better 10.Bg4 Bd7 11.c4=) 10...Bf7?? (better 10...g6 11.Be2 g5 12.Bh5 Kf8-/+) 11.Bf7+- Kf7 12.Qh5 g6 13.Ng6! (13.Qd5?! Kf8 14.f4 ef3 15.Qf3 Ke8+-) 13...hg6 14.Qh8 Bf8 (14...Nge7 15.Qh7 Ke6 16.Qh3 f5 17.c4 dc4 18.f3 ef3 19.Rf3+-) 15.Qh7 Bg7 16.Nd2 (better 16.c4+-) 16...Nh6+/- 17.f4 (17.b5 ab5 18.a4 ba4 19.c4-+) 17...Qd7 18.f5 gf5 19.Ne4?? (better 19.Nb3 Rh8 20.Qh8 Bh8 21.Nc5-+) 19...fe4 20.Rf6 Kf6 21.Rf1 Nf5 (better 21...Kg5 22.h4 Kh5-+) 22.Qh4-/+ Kg6 23.Qg4 Kf6 24.Bc1?? (24.Qh4 Kf7 25.Qh5 Kg8 26.Rf5-/+) 24...Nce7-+ 25.c4 Rg8 (25...c6 26.c5-+) 26.cd5 Nd5 (better 26...Qd5 27.Qf4 Ke6 28.Qc7 Rc8 29.Qb6 Rc6 30.Qb7 Nd4 31.ed4 Bd4 32.Be3 Be3 33.Kh1 Qd3-+) 27.Qe4 (27.Qh4 Kf7 28.Qh5 Ke7 29.Rf5 Nf6-/+) 27...Re8 (27...Bh6 28.g4 Be3 29.Kh1-+) 28.Qd3 (better 28.Qf3 Bh6 29.e4 Bc1 30.Rc1 Nb4 31.Qf5 Qf5 32.ef5-+) 28...Re7?? (better 28...Nde3 29.Be3 Kg6-+) 29.e4+= Nde3?? (better 29...Nb6+=) 30.Be3+- 1-0. yasminoah (2005) - mrsa (1710), Rated Blitz game, lichess.org, 2014.

4.e3 Nd7 5.Be2 h6 (5...Ngf6 6.a3=) 6.0-0 e6 (6...Ngf6 7.a3+=) 7.a3 Bd6 (7...Ngf6 8.h3 Bf3 9.Bf3=) 8.d3 (8.Bg7!? Rh7 9.Bb2+/–) 8...Ngf6+= 9.h3 (9.c4 0-0=) 9...Bh5 (9...Bf3 10.Bf3 a5 11.b5=) 10.c4 c6 11.Nbd2 Bb8 (11...b6 12.e4 e5 13.ed5 Bf3 14.Bf3 cd5 15.Rc1+=) 12.d4 (12.e4 0-0+=) 12...Qc7 (12...0-0 13.c5=) 13.c5 (13.Rc1 0-0=) 13...Bf3 (13...0-0 14.a4=) 14.Bf3?? (better is 14.Nf3 0-0 15.Bd3+=) 14…Qh2# 0–1. alaamattar (2145) – bienopia (2100), net–chess.com, 2006.

4.e3 e5 5.h3 Bf3 6.Qf3=.

(--> 1.b4 c6 2.Bb2 d5 3.Nf3 Bg4).

4.e3 Nf6 5.c4 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 Bg4 5.Nf3).

4.b5 Bg4 5.e3 Bf5 6.Be2 Bg4 7.h3 Bf5 8.c3 (better 8.0-0+=) 8...Bc2?? (better 8...a6=) 9.Qc2+- c5 10.Qd1 (10.c4 e6+-) 10...c4 11.d3 b6 (11...cd3 12.Qd3 Nf6 13.c4+-) 12.dc4 e6 13.cd5 Bd6 (13...Qd5 14.Qd5 ed5 15.c4 dc4 16.Bc4+-) 14.de6 fe6 15.c4 (better 15.Nd4 Nd7 16.Ne6+-) 15...g6 (15...Nf6 16.Bf6 gf6+-) 16.Bh8 Ne7 17.Bf6 (17.Ng5 Bb4 18.Bc3 Qd1 19.Kd1 Bc3 20.Nc3 Nd7 21.Ne6 Kf7+-) 17...Qc7 18.0-0 (18.Ng5 Bb4 19.Nc3 e5+-) 18...Kf7 19.Bc3 Nd7 20.Qd4 (better 20.Ng5 Kg8 21.Bg4 Bh2 22.Kh1 Nf5 23.Bf5 gf5 24.Ne6 Qd6 25.Qd6 Bd6+-) 20...Rd8 21.Qg7 (better 21.Ng5 Ke8 22.Qh8 Nf8 23.Ne6 Qb8 24.Qf8 Kd7 25.Nd8 Qd8 26.Bg4 Kc7 27.Qd8 Kd8+-) 21...Ke8 22.Qh8 Nf8 23.Bg7 (better 23.Ng5 Qd7+-) 23...e5 24.Qf8 Kd7 25.Qf7 e4 26.Bf6 (better 26.Ng5 Kc8 27.Ne6 Qd7 28.Nd8 Kd8+-) 26...ef3 27.Bf3 Bh2 28.Kh1 Kc8 29.Qe7 (better 29.Be7!? Bd6 30.Qe6 Qd7+-) 29...Qe7 30.Be7 Rd7 31.Bb4 (31.Bg4 Kc7 32.Bd7 Kd7 33.Rd1 Ke7 34.Kh2 g5+-) 31...Bd6 32.Nc3 (better 32.Bg4 Kc7 33.Bd7 Bb4+-) 32...Bb4 33.Nd5 Bc5 34.Bg4 h5 35.Bd7 Kd7 36.Rad1 (better 36.Nf4 Ke8+-) 36...Kd6 37.Nc3 (better 37.Nb6 Kc7 38.Nd5 Kc8+-) 37...Ke5 38.Ne2 Kf5 39.Ng3 Kg5 40.Rd5 (40.Ne4!? Kf5 41.Nc5 bc5 42.Rd5 Kf6+-) 40...Kh6 41.Rc5! h4 (41...bc5 42.Rd1 Combination) 42.Rd1 (42.Nf5 Kh5 43.g4 hg3 44.Ng3 Kh6 45.Rc7 a6 46.ba6 Kg5 47.f4 Kh6 48.Rd1 b5 49.cb5 g5 50.Rd6) 42...bc5 43.Rd5 hg3 44.fg3 g5 45.Rc5 Kh5 46.Rc7 a5 47.Ra7 (47.ba6 g4 48.a7 Kg6 49.a8Q gh3 50.Qe8 Kf5 51.Rf7 Kg5 52.Qg8 Kh5 53.Rh7) 47...a4 48.Ra4 (48.g4 Kg6 49.b6 Kf6 50.b7 Ke5 51.b8Q Ke4 52.Rd7 Ke3 53.Qe5 Kf2 54.Rf7) 48...Kg6+- 49.Ra3 Kf5 If Black now only could play b6... 50.Rd3 (50.b6 Kg6 51.b7 Kf6 52.b8Q Kf5 53.g4 Ke6 54.Qc7 Kf6 55.Ra6) 50...g4 51.Rd5 Ke4 (51...Kg6 52.b6 Kg7 53.b7 gh3 54.gh3 Kg6 55.b8Q Kf6 56.Rd6 Ke5 57.Qf8 Ke4 58.Qf4) 52.Rd4 (52.b6 Ke3 53.b7 gh3 54.b8Q Ke2 55.Qe5 Kf2 56.Rd2 Kf1 57.Qe2) 52...Ke3+- 53.hg4 (53.Rg4 Kd2 54.b6 Kd1 55.b7 Ke2 56.b8Q Kd2 57.Qb2 Ke3 58.Qd4 Ke2 59.Re4 Kf1 60.Qf6) 53...Kf2 54.Rf4 Kg3 (54...Ke1 55.b6 Ke2 56.b7 Kd3 57.b8Q Kc2 58.Qb3 Kd2 59.Rd4 Ke2 60.Qf3 Ke1 61.Rd1) 55.Rf5 (55.Re4 Kh4 56.b6 Kg5 57.b7 Kg6 58.b8Q Kf7 59.Qe8 Kg7 60.g5 Kh7 61.Re7) 55...Kg4 (55...Kh4 56.b6 Kg4 57.Rd5 Kg3 58.b7 Kf4 59.b8Q Kg4 60.c5 Kh4 61.Qf4) 56.Rf8 Kg3 (56...Kh4 57.b6 Kg4 58.b7 Kg3 59.b8Q Kg4 60.Qf4 Kh5 61.Qg3 Kh6 62.Rh8) 57.c5 (57.b6 Kh4 58.b7 Kg3 59.b8Q Kg4 60.Qf4 Kh5 61.Qg3 Kh6 62.Rh8) 57...Kh4 (57...Kg4 58.b6 Kg5 59.b7 Kg4 60.b8Q Kh5 61.Qg3 Kh6 62.Rh8) 58.c6 (58.Rg8 Kh5 59.c6 Kh6 60.c7 Kh5 61.c8Q Kh6 62.Qh3) 58...Kg3 (58...Kh5 59.Rg8 Kh6 60.c7 Kh5 61.c8Q Kh6 62.Qh3) 59.c7 Kh4 (59...Kg4 60.c8Q Kg5 61.Qe6 Kh5 62.Rg8 Kh4 63.Qg4) 60.c8Q (60.Rg8 Kh5 61.c8Q Kh6 62.Qh3) 60...Kg3 (60...Kg5 61.Qe6 Kh5 62.Rg8 Kh4 63.Qg4) 61.Qc7 (61.Qh3) 61...Kh4 62.Qg7 Kh5 63.Rh8 1-0. Jimito100 (1995) - erdosain (1810), Rated Bullet game, lichess.org, 2020.

4.e3 Nc6 5.b5 Ne5?? (better 5...Na5=) 6.Ne5+- e6 7.Nf3 Bd6 (7...Ne7 8.Be2+-) 8.c4 (better 8.Bg7 Nf6 9.Bh8+-) 8...Nf6 9.Nd4 Bg6 10.cd5 ed5 11.Be2 Qe7 12.Nf3 0-0 13.a4 Rfe8 14.Nc3 d4 (14...c5 15.bc6! bc6 16.Nh4+-) 15.Nd4 Bc5 16.Nf3 Bh5 17.0-0 Bb4 18.Na2 Bd6 19.d4 Bg6 20.Bd3 Ng4 (20...Ne4 21.Nc3+-) 21.Bg6 hg6 22.Nc3 Qf6 (22...Nf6 23.Qc2+-) 23.Ne2 (23.e4 Qe6+-) 23...Re4 24.Ng3 (24.h3 Nh6+-) 24...Bg3 25.hg3 (worse 25.fg3 Ne3 26.Qd3 Re6+-) 25...Rae8 (25...Re7+-) 26.d5 (better 26.Nd2 Qf5 27.Ne4+-) 26...Qb2 27.d6 (27.Qc1 Qc1 28.Rfc1 R4e7+/-) 27...cd6+/- 28.Qd6 (28.Ng5 Rb4 29.Qd6 Rf8+-) 28...Qf6 (28...Nf2 29.Qd2 Qd2 30.Nd2 Nd3 31.Ne4 Re4+-) 29.Qd7+- R4e7?? (better 29...Qe7 30.Rfd1 Rc4+-) 30.Qg4 Re4 31.Qh3 g5 32.g4 Qg6 33.Nh2 (33.Rfd1 Qf6+-) 33...R4e6 34.Rad1 Qh6 (34...Re4 35.Rd7+-) 35.Rd5 Qh3 36.gh3 Rg6 (36...Re4 37.Rd7 R8e7 38.Rfd1+-) 37.f4 (37.Nf3!? a6+-) 37...b6 (37...Rge6 38.Nf3+-) 38.f5 Rf6 (38...Rh6 39.Kg2+-) 39.Nf3 Rf8 (39...Rh6 40.Ng5 f6 41.Ne6 Rh3 42.Rd7 Re6 43.fe6 Re3 44.e7+-) 40.Re1 (40.Ng5 Rh6+-) 40...Rh6 (40...Re8 41.Ng5 g6 42.e4+-) 41.e4 (41.Ng5!? f6 42.Ne6 Re8+-) 41...f6 42.Kg2 g6 43.fg6 Rg6 44.e5 Rg7 (44...fe5 45.Ree5 Rg7 46.Ng5+-) 45.ef6 Rf6 46.Rd8 Rf8 47.Ree8 Re8 48.Re8 Kh7 49.Re6 Rg8 (49...Kg8 50.Re5+-) 50.Ng5! Rg5 51.Re7 Rg7 (51...Kg8+-) 52.Ra7 (better 52.Rg7 Kg7 53.Kf3+-) 52...Ra7-+ 53.a5 (53.Kg3-+) 53...Rg7 (53...ba5 54.h4 a4-+) 54.ab6 Rc7?? (54...Rg5 55.Kg3-+) 55.b7 (55.bc7 Kg8 56.c8Q Kg7 57.b6 Kf7 58.Qf5 Ke7 59.b7 Kd6 60.b8Q Ke7 61.Qbf8) 55...Rc5?? (55...Rb7 56.Kf3 Kh6-+ (worse 56...Rb5 57.h4-+)) 56.b8Q+- Rc2 57.Kg3 Rc3 58.Kh4 Rc2 59.Qb7 Kg8 60.Qe7 Rf2 61.Qd8 Rf8 62.Qd5 Rf7 63.Qg5 (63.Kg5 Kg7 64.b6 Re7 65.b7 Re8 66.Qd7 Kh8 67.Qe8 Kg7 68.Qd7 Kf8 69.b8Q) 63...Kh8 64.Qg7 (64.Qe5 Kh7 65.Kg5 Rf8 66.Qe7 Rf7 67.Qf7 Kh8 68.Qe7 Kg8 69.Kf6 Kh8 70.Qg7) 64...Kg7-+ 65.b6 Kh8 0-1. Jimito100 (1945) - mehmetaliparto (2085), Rated Bullet game, lichess.org, 2020.

4.e3 Be4 5.c4 Bf3 (5...e6!?=) 6.Qf3+= dc4 (6...e6!?+=) 7.Qb7 Nd7 8.Bc4 Ngf6 9.Qf3 (9.b5 e5+-) 9...e6 10.a3 Ne5?? (better 10...Rb8+-) 11.Be5 Be7 (11...Bd6 12.Bf6 gf6 13.Bb5 Kf8 14.Bc6+-) 12.0-0 (better 12.Bc7 Qc7 13.Bb5 Nd7 14.Qa8 Bd8+-) 12...0-0 13.d4 Nd7 14.Bg3 Nb6 15.Bd3 Nd5 16.Nd2 Nf6 (16...Bd6 17.Ne4+-) 17.Ne4 Nd5 18.Rac1 (18.Rfc1 a5 19.b5 Rb8+-) 18...Rc8 (18...a5 19.Qh5 ab4 20.ab4+-) 19.Nc5 Bc5 (19...Bd6 20.Qe4 Nf6 21.Qh4 Bg3 22.fg3+-) 20.Rc5 c6 (20...f5 21.Bc4+-) 21.Rfc1 (better 21.Ba6 Ra8 22.Bb7 a6+-) 21...Qg5 (21...Qb6 22.Qe4 g6 23.Qf3+-) 22.h4 (better 22.e4 Rcd8+-) 22...Qe7 23.Qe4 (23.b5 Rfd8+-) 23...f5 24.Qe5 Nf6 (24...Qd7 25.Ba6 Rce8 26.Rc6+-) 25.Bc4 Rfe8 26.Bb3 (better 26.Qf5 Nd7 27.Ra5 Nb6+-) 26...Ne4 (26...Nd7 27.Qf5 Nc5 28.Rc5 Qf7 29.Qf7 Kf7+-) 27.Rc6 Rc6 (27...Ng3 28.Rc8 Ne2 29.Kf1 Nc1 30.Be6 Kf8 31.Rc7 Qc7 32.Qc7 Re6 33.Qc5 Ke8 34.Qc1+-) 28.Rc6 Ng3 (28...Qd8+-) 29.Re6 Qf8 30.Re8 Kh8 31.Rf8 1-0. BeepBeepImAJeep (2665) - scorn (1690), lichess.org, 2017.

(--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4).

4.e3 c6 5.c4 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 Bg4 5.Nf3).

4.e3 Nbd7 5.h3 Bh5 (--> 1.b4 d5 2.Bb2 Bg4 3.h3 Bh5 4.Nf3 Nf6 5.e3 Nbd7).

4.e3 e5 5.Be5 Bb4 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.Nf3 d5 5.e3 Bg4).

4.e3 e5 5.Be5 Bb4 6.Be2 Nc6 7.Bb2 0-0 (--> 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.e3 Nc6 5.Bb2 d5 6. Be2 0-0 7.Nf3 Bg4).

4.e3 e6 5.a3 Nbd7 6.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 e6 6.a3).

4.e3 e6 5.c4 Nbd7 6.Qb3 (--> 3.c4 e6 4.Qb3 Nf6 5.e3 Nbd7 6.Nf3).

4.b5 e6 5.a4 c6 6.e3 Nf6 7.c4 Bg6 8.Be2 Be7 9.0-0 0-0 10.d4 dc4 11.Bc4 a6 12.Nc3 cb5 13.ab5 Nbd7 (13...Bh5 14.Be2+=) 14.Be2 (14.ba6!? Nb6 15.Bb5 ba6 16.Ba6+/-) 14...ab5= 15.Ra8 Qa8 16.Bb5 Nb6 (16...Qa5 17.Qe2=) 17.Qb3 Nbd5 18.Ne5 Nc3 19.Bc3 (19.Ng6 hg6 20.Ra1 Qb8 21.Bc3 Rc8+/-) 19...Nd5 (19...Be4 20.Ra1 Qc8 21.f3+=) 20.Ra1+/- Qd8 (20...Qc8 21.Ng6 fg6 22.Bd2+/-) 21.Bb2 (better 21.Nd7!?+-) 21...Bd6+/- 22.h3 (22.Bc4!?+/-) 22...Be5= 23.de5 Qc7 24.Rc1 Qb6 25.Bd4 Qa5 26.Bc4 b5 (26...Rb8!?+/-) 27.Qb5 Qb5 28.Bb5 h6 29.Bc6 Nb4 30.Bf3 Nd3 31.Rc7 Nb4 32.Bc5 (32.h4 h5+-) 32...Na6+/- 33.Bf8 Nc7 34.Bd6 Ne8 (34...Nd5 35.h4+/-) 35.Bb8 f6 36.Bc6 fe5 37.Be5 Nf6 38.f3 Kf7 39.Kf2 Bh7 40.e4 Ne8 (40...Ke7 41.Ke3+-) 41.g4 (41.Be8 Ke8 42.Bg7 h5+-) 41...Nf6 42.Kg3 Ne8? (42...h5 43.g5 Ng8 44.f4+-) 43.h4 (43.Be8!? Ke8 44.Bg7 h5+-) 43...g5 (43...Nf6 44.g5 Ng8 45.Kg4+-) 44.hg5 hg5 45.f4 (45.Be8 Ke8 46.Bf6 Kd7+-) 45...gf4 46.Kf4 Nf6 47.g5 Ng8 48.Ba4 Ne7 49.Bd1?? (better 49.Bf6+-) 49...Ng6-+ 50.Ke3 Ne5 51.Bh5 Ng6 52.Bg4 (52.e5 Kg7 53.Bg4 Bg8-+) 52...Ke7 53.Kd4 Kd6 54.Be6?? (54.Be2-+) 54...Ke6 55.Ke3 Ne5 56.Kf4 Kf7 (56...Nd7 57.Kg4-+) 57.Ke3?? (better 57.Ke5 Be4 58.Kf4=) 57...Kg6 58.Kf4 Nf7 59.Ke3 Kg5 60.Kd4 Bg6 61.e5 Kf5 62.e6 Ke6 63.Kc4 Kf6 64.Kc3 Kg7 65.Kb2 Kf8 66.Kc3 Ke7 67.Kb2 Ke6 68.Kc3 Ke5 69.Kb2 Kd6 70.Kc3 Bf5 71.Kb2 Ne5 72.Kc3 Kd5 73.Kb2 Kc5 74.Ka1 Kc4 75.Kb2 Nd3 76.Ka1 Nc5 77.Kb2 Be4 78.Ka1 Bd3 79.Ka2 Kc3 80.Ka1 Kc2 81.Ka2 Bc4 82.Ka3 Nb3 83.Ka2 Kd3 84.Ka3 Kc3 85.Ka2 Bb5 86.Ka3 Nd4 87.Ka2 Nc2 88.Kb1 Bc4 89.Kc1 Bb3 90.Kb1 Nb4 91.Kc1 Nd3 (91...Ba2 92.Kd1-+) 92.Kb1 ½-½. BeepBeepImAJeep (2490) - NorwegianNinja (2215), lichess.org, 2017.

4.e3 Nf6 5.c4 e6 6.Qb3 (6.cd5 ed5 7.a3 a5=) 6...Nbd7 7.Nc3 c6 (7...dc4 8.Qc4 Bf3 9.gf3=+) 8.d4 Rc8 9.a4 (9.Nd2 Be7=) 9...Be7 10.Be2 0-0 11.0-0 Ng4 (11...dc4 12.Qc4 Nd5 13.Nd5 cd5 14.Qb3=) 12.h3 (12.a5 dc4 13.Qc4 Ngf6+=) 12...Ngf6 13.Rfd1 (13.c5 b6=) 13...Bg6 (13...dc4 14.Qc4 Nd5 15.Nd5 cd5 16.Qb3=) 14.Rac1 Nb6 15.c5 Nbd7 16.b5 Bc5? (better 16...Ne4=) 17.dc5+- Nc5 18.Qa2 Nce4 19.Ne4 Be4 (19...Ne4 20.bc6 Rc6 21.Qa1+-) 20.Nd2 Bg6 21.Qa1 (better 21.Bd4+-) 21...Ne4? (better 21...c5+-) 22.Bg7 Re8 23.bc6 bc6 24.Ne4 Be4 25.Bh5 (better 25.Qe5 Qc7 26.Qg5+-) 25...Qg5+/- 26.Bf6?? (better 26.f3 Bf5 27.g4 Qe3 28.Kg2+/-) 26…Qg2 (26...Qh5?! 27.f3 Bg6 28.Qd4=+) 0-1. ClayPigeons (2125) - mrt3201 (2130), Rated Bullet game, lichess.org, 2021.

4.Ne5 Nd7 5.d4 Ne5 6.de5 e6 7.Qd4 (7.Qd2 Nh6=+) 7...Ne7 8.Qh4 (8.e3!?=+) 8...Bg6-/+ 9.g4 (9.c3 c5!-/+) 9...Qd7 10.e3 (10.Nd2!?-+) 10...Qa4 11.c3? (11.Nd2 Qb4 12.Bd4 Bc2 13.Rc1-+) 11...Qc2 (better 11...Bb1!? 12.Rb1 Qc2 13.Bb5 c6 14.0-0 cb5 15.f4-+) 12.Ba3 a5 13.Bg2 (13.b5 Be4 14.b6 Bh1 15.f3 Bf3 16.bc7-+) 13...ab4 14.Bb4 (14.cb4 Bd3 15.Nd2 Ra3-+) 14…Bd3 (14...Bd3 15.Nd2 c5-+) 0-1. drink1966 – marekt, ChessWorld.net, 2022.

4.Be5 Qb4 5.Nc3 Qc5 6.Qb1 Nc6 7.Qb7? (better is 7.h3 Bd7 8.Qb3–/+ (8.Qb7? Rb8 9.Qc7 f6–+)) 7...Rb8–+ 8.Qc7 Rc8 9.Qb7 f6 10.e4 d4?? (10...fe5 11.Qb5 Qb5 12.Bb5 d4–+ (12...ef4 13.ed5 Bd7 14.dc6 Bc6 15.Rb1+/–)) 11.Na4–/+ Qc2 12.Bb5? (better is 12.Bc7 e5 13.fe5–/+) 12...Kf7?? (12...a6 13.Be2 Nd8–+ (13...fe5 14.Bg4 Rd8 15.Bd1 Qe4 16.Ne2+/–; 13...Ne5 14.fe5 Nh6 15.Bg4 Ng4 16.e6+=)) 13.Nf3+= a6 (13...fe5 14.Bc6 Rc6 15.Ne5 Ke8 16.Qc6 Qc6 17.Nc6+-; 13...Qe4 14.Kf2 Qd5 15.Rhc1+/–) 14.Ba6? (14.Qa6 Nb4 (14...Ne5 15.fe5 Qe4 16.Kf2+/–; 14...fe5?? 15.Bd3 Qd3 16.Qd3+-; 14...Qe4?! 15.Kf2 Nb4 16.Qa5 Bf3 17.gf3 Nd3 18.Bd3 Qd3 19.Nb2+=) 15.Qa5 Qe4 16.Kf2 Bf3 17.gf3 Nd3 18.Bd3 Qd3+=) 14...Qa4 (14...Ne5 15.fe5 Qa4 16.ef6 gf6–/+ (16...Kf6 17.e5 Kf7 18.e6 Kf6 19.Qd5 Be6 20.Qe5 Kf7 21.Ng5 Ke8 22.Qe6+-)) 15.f5= Bf3 (15...fe5 16.Qc8 Bf3 17.Qe6 (17.gf3?! g6+=) 17...Ke8 18.gf3+-; 15...Ne5 16.Qd5 Ke8 17.Ne5 fe5 18.Bb5 Qb5 19.Qb5 Kf7 20.h3 Bf5 21.ef5+-) 16.Qc8 g5 (16...fe5 17.Qe6 (17.gf3?! g6+=) 17...Ke8 18.gf3+-; 16...Ne5?? 17.Qe6 Ke8 18.Rb1+-) 17.gf3 Ne5 18.h4 (18.f4 d3 19.Qe6 Kg7 20.fe5 Qe4 21.Kf2 Qf4 22.Ke1 Qe4 23.Kf2 Qf4 24.Ke1 Qe4 25.Kf2=) 18...d3 19.Bb7? (better is 19.hg5!? Qd4 20.Qc3 Nf3 21.Kd1 Qc3 22.dc3 fg5 23.Bd3=) 19...Qd4 20.Rb1 Nf3 21.Kd1 Nh6 (21...Nh6 22.hg5 Ng4 23.Bd5 Kg7–/+) 0–1. Bach,Matthias (2315) – Varga,Zoltan (2440), FSGM, 2012.

4.Be5 Qb4 5.Bc7? Nd7–+ 6.Nf3 (better 6.h3 Bf5 7.Nf3–+) 6...d4 7.c3 (7.Be5 Bf3 (7...Ne5?! 8.Ne5 Nf6 9.Ng4 Ng4 10.e4–/+) 8.ef3 Ne5 9.fe5 Qb2–+) 7...Qb2 8.Nd4 (8.Na3 Qa3 9.Qb1 dc3 10.Qb7 Nb6–+) 8...Qa1 9.Qc2 Nc5 (9...Be6 10.Ne6 fe6 11.g3–+) 10.e3 Bd7 11.Bc4 Rc8 (11...b5 12.Nb5 a6 13.Nd4–+) 12.Ba5 (12.0-0 Rc7 13.Na3 Qf1 14.Bf1 a6–+) 12...Ba4 13.Bb5 Bb5 14.Nb5 Qb2! 15.Qb2 Nd3 16.Ke2 0–1. mizuzul – papadale, ChessWorld.net, 2018.

4.a3 a5 5.b5 Nd7 (5...Qb6 6.a4=) 6.Bg2 Ngf6 7.Nf3 e5 8.0-0 e4 (8...Be7 9.d4 e4 10.Ne5=+) 9.Nd4= Qb6 10.h3 Bh5 11.a4 c5 12.Nf5 (12.bc6 bc6 13.Nb3 Bd6=+) 12...Qe6=+ 13.g4 Bg6 14.Nh4 0-0-0 15.d3 Bd6 16.Qd2 (16.g5 Nh5 17.e3=+) 16...d4 (16...Bc7!?=+) 17.Qa5= Qe5 18.Rc1 (18.f4 ef3 19.Rf3 Nd5= (< 19...Qe2 20.Ng6 hg6 21.Qa8 Kc7 22.Qb7 Kb7 23.Rf2 Qe4 24.de4+-)) 18...Ng4 19.Ng6 hg6 20.Qa8? (better is 20.Nd2!? Rh3 21.Nf1=) 20...Kc7–/+ 21.Qa5 Nb6 (22.Kf1 Nh2 23.Kg1 Qg5 24.de4 Rh3–+) 0–1. Milde,Lars (2205) – Schulz,Hans_Juergen (2150), TT–08.16 ETC, 2004.

4.a3 Nc6 5.Bg2 e5 6.Nf3 0-0-0 7.0-0 f6 8.d3 Qe6 9.Nbd2 g6 10.Qc1 Bg7 11.c4 d4 12.Nb3 Qd6 13.c5 Qe6 14.Nbd2 h5 15.Re1 Nce7 16.Qc4 g5 17.Qe6 Be6 18.Ne4 h4 19.gh4 g4 20.Nfd2 Rh4 21.Ng3 f5 22.f3 Nf6 23.Rf1 (better is 23.fg4 Ng4 24.Nf3–/+) 23...Bh6 24.Nc4 (24.Rfd1 Be3 25.Kh1 Rh2 26.Kh2 Rh8 27.Bh3 Rh3 (27...gh3?! 28.Nc4–/+) 28.Kg2 Ng6–+) 24...Bc4 25.dc4 Be3 26.Kh1 Rdh8 (26...Rdh8 27.h3 gh3–+) 0–1. Hal1958 – Janwitje, playchess.de, 2004.

4.a3 Nc6 5.Bg2 e5 6.Nf3 f6 7.0-0 0-0-0 8.d3 Qe6 9.Nbd2 Bh3 10.c4 Bg2 11.Kg2 dc4 12.Nc4 h5 13.h4 (13.Qb3 Kb8+=) 13...Be7 (13...e4 14.Ne1=) 14.Ne3 (14.Qc2 Nd4 15.Bd4 ed4+=) 14...g5 15.Rh1 gh4 16.Nh4 (worse is 16.gh4 Nh6–/+) 16...Nh6 17.Ng6 Nf5? (better is 17...Rhg8 18.Ne7 Ne7 19.Rh5 Nhf5 20.Nf5 Nf5=) 18.Nf5+- Qf5 19.Nh8 Rh8 20.e4 Qg6 21.Qf3 h4 (21...Bd6 22.Rh4+-) 22.Qf5 Qf5 23.ef5 Nd4 (23...Rh5 24.Rh4 Rf5 25.Bc1+-) 24.Bd4 ed4 (24...h3 25.Rh3 Rh3 26.Kh3 ed4 27.Re1+-) 25.Rh4 (25.gh4?! Rh5+-) 25...Rh4 26.gh4 Kd7 27.h5 Ke8 (27...Bf8 28.Rh1 Bh6 29.Rh4+-) 28.f4 (better is 28.h6!? Kf7 29.Re1 Bf8+-) 28...Kf7 29.Kg3 (29.Kf3 b6+-) 29...Kg7 (29...Bd6 30.Rc1+-) 30.Rc1 c6 (30...Bd6 31.Rc4+-) 31.Rc4 a5 (31...Kf7 32.Rd4 Ke8 33.h6+-) 32.Rd4 (32.Rd4 ab4 33.Rd7+-) 1–0. Hal1958 – GCP, playchess.de, 2004.

4.a3 e5 5.Bg2 c6 6.Nf3 f6 7.0-0 Nd7 8.d3 Ne7 (8...a5 9.ba5 Ra5 10.c4=) 9.Nbd2 Ng6 10.c4 d4 (10...Be7 11.d4=) 11.Ne4 (11.h3 Bf5+=) 11...Qc7 (11...Qe7 12.c5 Qe6 13.e3 de3 14.fe3=) 12.Rc1 (12.e3 f5 13.Neg5 de3 14.fe3 Nf6+=) 12...Nb6 (12...Be7 13.e3=) 13.b5 Be7 14.a4 (14.e3 c5=) 14...0-0 15.Qb3 Kh8 (15...c5 16.Ned2=) 16.Ba3 Ba3 17.Qa3 Rac8 (17...f5 18.Neg5 Rf6 19.a5=) 18.c5 Nd5 19.Nd6 Rb8 20.h3 (20.Rfe1 f5+=) 20...Be6= 21.Nd2 (21.Rfe1 Qd7=) 21...Qd7 22.Kh2 f5 23.N2c4 f4 24.Be4 (better is 24.Rce1=) 24...Nge7?? (better is 24...Bh3 25.Rfd1 fg3 26.fg3 Rf2 27.Kg1 Rbf8–/+) 25.h4 Bh3? 26.Rg1?? fg3=+ 27.fg3 Rf2 28.Kh1 Bf1–/+ 29.g4 Be2 30.Ne5 Qe6 31.Nef7?? Kg8?? 32.Rg2 Rg2 33.Bg2 Qg4 34.Qa2? Nf4?? 35.Nh6 (35...Kh8 36.Ndf7) 1–0. amikhlin (2365) – chadpalmer (2160), net–chess.com, 2002.

(--> 1.b4 d5 2.Bb2 Nf6 3.g3 Bg4).

4.Bg2 c6 5.Nf3 (--> 1.b4 c6 2.Bb2 d5 3.Nf3 Nf6 4.g3 Bg4 5.Bg2).

4.d3 e5 5.Nd2 a5 6.b5 Ngf6 7.h3 Bh5 (7...Be6 8.Ngf3 Bd6 9.Ng5=+) 8.g4= Bg6 9.Bg2 c6 10.c4 Bc5 11.Ngf3 cb5 12.cd5 (worse 12.Be5 dc4 13.Bf6 Qf6 14.dc4 bc4 15.Nc4 Bc2=+) 12...h5 (12...Qc7 13.Nh4=) 13.Nh4 (13.Ne5 Ne5 14.Be5 hg4+=) 13...Qb6= 14.0-0 (14.d4!? Bd4 15.Bd4 Qd4 16.Ng6 fg6 17.Qb1 hg4 18.Qg6 Kd8 19.Rd1=) 14...hg4-/+ 15.Ng6 fg6 16.hg4 Ng4 17.Ne4 Qd8 18.e3 Qh4 19.Re1 Be3 20.Re3 (20.Re2 0-0 21.Qe1 Bb6-+) 20...Qh2-+ 21.Kf1 Ne3 22.fe3 0-0 23.Nf2 (23.Ke1 Qg2 24.Qe2 Qe2 25.Ke2 b4-+) 23...Rf2! 24.Kf2 Rf8 25.Qf3 Qh4 26.Kf1 Rf3 27.Bf3 Qg3 28.Be4 Nf6 29.Rd1 (29.Bc1-+) 29...Ne4 30.de4 Qf3 31.Ke1 Qe3 32.Kf1 Qf3 33.Ke1 Qe4 34.Kf1 (34.Kd2 b4 35.d6 Qg2 36.Ke3 Qb2-+) 34...Qh1 35.Ke2 Qg2 36.Ke1 Qb2 37.d6 Qc3 (37...Qa3!? 38.d7 Qb4 39.Rd2 Qh4 40.Ke2-+) 38.Ke2 (38.Rd2 Qg3 39.Ke2 Qg4 (39...Qa3?! 40.d7=) 40.Ke3 Qh3 41.Ke2 Qd7-+ (41...Qa3?! 42.d7=+)) 38...Qc2 (38...Qc4 39.Ke1-+) 39.Rd2 Qd2! 40.Kd2 Kf7 41.d7 Ke7 42.Ke1 0-1. Prasannaa,S (2235) - Laxman,R (2425), 1st Athens of the East Op (9), 2019. (=1.a3 d5 2.b4 Bg4 3.Bb2)

4.Nf3 (--> 3.Nf3 Nd7 4.a3).

5.c4 c6 6.Qb3 (6.cd5 cd5 7.Nc3 e6=) 6...e6 7.Nc3 Ngf6 8.e3 Bd6 9.d3 0-0 10.Be2 Be2 11.Nge2 a5 12.0-0 ab4 13.ab4 Qb6 14.b5 Nc5 15.Qc2 e5 (better 15...dc4!? 16.dc4 Rfd8=) 16.Ra8 Ra8 17.d4 ed4 18.ed4 Ne6 19.c5 Bc5 20.dc5 Nc5 21.bc6 bc6 22.Nd4 Re8 (22...Ncd7 23.Rd1+/-) 23.Nce2 (23.Rb1 Nfd7+-) 23...h6 (23...Ncd7 24.Nc6 Re2 25.Qe2 Qc6 26.Rc1+/-) 24.Rb1 (24.Ng3 Ra8+-) 24...Nce4 (24...Ncd7!?+/-) 25.Qc6+- Qa7 26.Ra1 Qe7 27.Nf5 Qb4 28.Bd4 Qb8 (28...Qc4 29.Qc4 dc4+-) 29.f3 Ng5 30.Bf6 Re6 (30...gf6 31.Ned4 Qd8+-) 31.Ne7 (31.Ra8!? Rc6 32.Rb8 Kh7 33.Bg7 Nf3 34.Kf2 Kg6 35.Kf3 Kf5 36.Nd4 Kg6 37.Nc6 Kg7+-) 31...Kh7 32.Qc2 g6 33.Bg5 hg5 (33...Qe5 34.Nc3 d4 35.Ne4 hg5 36.Nc6+-) 34.Nd5 Qe5 35.Ndc3 (35.Nec3 Qd4 36.Qf2 Qf2 37.Kf2 f5+-) 35...Qc5 36.Kh1 (36.Kf1 Kg7+-) 36...Rd6 (36...Re2 37.Qe2 Qc3 38.Ra7+-) 37.Rd1 Re6 (37...f5 38.Rc1+-) 38.Qd3 Re3 39.Qd4 Qe7 (39...Qd4 40.Rd4 Kg7+-) 40.Nd5 (40.Nd5 Qe5 41.Ne3+-) 1-0. black_bishop_88 (2645) - Pon4ik2006 (2585), Pirates Private Cup, lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2)

5.d3 e5 6.Nd2 Ngf6 7.g4 Bg6 8.g5 Nh5 9.h4 h6 10.e3 c5 (10...a5!?+=) 11.bc5 Bc5 12.Qg4 (12.Bg2 hg5 13.hg5 Nb6=) 12...Qe7 13.Ne2 f6 (13...Rd8 14.d4 Bd6 15.de5 Ne5 16.Qa4 Qd7 17.Qd7 Nd7 18.Nd4=) 14.Nc3 (14.gf6 Qf6 15.Bg2 Bf7+=) 14...Nb6 (14...f5!? 15.Qf3 A) worse is 15...hg5 16.Nd5 Qd6 17.Nc4+/– (worse is 17.hg5 e4 18.Ne4 Qd5=); B) 15...e4=) 15.gf6+= Qf6 16.Rg1 0-0 17.Qg6 Qf2 18.Kd1 Qe3? (better is 18...Be3 19.Ne2 Qh4 20.Be5 Bg1 21.Qg1 Rae8+=) 19.Ne2+- Rf1?? (19...Rf2 20.Qh5 Re2 21.Rg7 Kg7 22.Qg4 Kh8 23.Be2 d4+-) 20.Rf1 Nf4 (20...Na4 21.Rb1 Nb2 22.Rb2 Nf4 23.Nf4 ef4 24.Rb7 Bf8+-) 21.Nf4 ef4 (21...Rf8 22.Qe6 Kh7 23.Be5 Rf4 24.Rf4 Qg1 25.Rf1 Qg6 26.Qg6 Kg6+-) 1–0. Woelfelschneider,Peter – Steinhoefel, 2009.

5.g4 Bg6 6.Bg2 c6 7.c4 dc4 8.Nc3 e6 9.Nf3 Ngf6 10.Nh4 Nd5 11.Ng6 hg6 12.e3 (12.Nd5 cd5 13.e4 Nb6–/+) 12...a6 (12...Ne5 13.0-0 Nd3 14.Qc2–+) 13.Qe2 (13.Nd5 cd5 14.e4 Nf6+=) 13...N7b6 (13...Ne5 14.0-0 Nd3 15.Rfb1–+) 14.0-0-0 Qc7 15.f4 0-0-0 16.Ne4 Qd7 17.Nc5 Bc5 18.bc5 Na4 19.Bg7 Rhg8 20.Be5 Nc5 21.Qc4 Qe7 22.Bd4 Nd7 23.Kb2 Kb8 24.Rb1 N7b6 25.Qc2 Qc7? (better is 25...Nd7+=) 26.Be5+- (26.Be5 Rd6 27.e4+-) 1–0. combijack (1735) – rgold52 (1745), gameknot.com, 2010.

5.g4 Bg6 6.Bg2 c6 7.d3 a5 8.Nd2 (8.b5 Qb6 9.Nc3 e5=) 8...Ngf6 9.Rb1 (9.b5 e6=) 9...ab4=+ 10.ab4 e5 11.Ngf3 Bd6 12.Nh4 (12.b5 0-0=+) 12...Bb4-/+ 13.Ng6 hg6 14.0-0 Bd6 15.e4 de4 16.Ne4 Ne4 17.de4 Qe7 18.Qd3 Bc5 19.Kh1 g5 20.Bc1 b6 21.Be3 0-0 (21...Be3 22.Ra1 Rd8 23.Qe3-/+) 22.Qd2 (22.Bg5!? Qg5 23.Qd7=+) 22...Be3-+ 23.fe3 (23.Qe3 Ra6-+) 23...b5 24.Qc3 Nc5 25.Rf5 f6 26.h4 (26.Rff1 Ra4-+) 26...g6 27.Rf3 gh4 28.g5 (28.Rh3-+) 28...fg5 29.Rbf1 (29.Rf8 Kf8 (29...Qf8?! 30.Qe5 Ra7 31.Qg5-/+) 30.Bf3 Ke8-+) 29...Rf3 (29...g4 30.Rf8 Rf8 31.Rf8 Kf8 32.Qe1-+) 30.Rf3 (30.Bf3 Rf8 31.Kg2 g4 32.Bg4 Rf1 33.Kf1 Qf6 34.Kg2 Ne4-+) 30...Rf8 (better 30...g4!? 31.Rf1 h3 32.Kh2 hg2 33.Kg2-+) 31.Rf8 Kf8 (31...Qf8?! 32.Qe5 Kf7 33.Qg5-+) 0-1. black_bishop_88 (2650) - Dondimi (2700), lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2)

4.d3 a5 5.Nd2 ab4 6.ab4 Ra1 7.Qa1 Nf6 (7...Bb4?? 8.Bg7 Qg5 9.f4 Qf4 10.c3+-) 8.b5 c5 9.Ngf3 Nbd7 10.g3 Bd6 11.Bg2 0-0 12.0-0 Qb6 13.c4 d4 14.Re1 e5 15.e3 de3 (15...Rd8!?=) 16.Re3+= Re8 (16...Bf3 17.Nf3 Ng4 18.Re4+/-) 17.h3 (17.Ne5 Be5 18.Be5 Ne5 19.Re5 Be6+/-) 17...Bf5 (17...Bf3 18.Nf3 Qc7 19.Qe1+=) 18.Nh4 (18.Ne5 Be5 19.Be5 Ne5 20.Re5 Be6+/-) 18...Bg6 (18...Be6 19.Ndf3+=) 19.Ng6+/- hg6 20.Bc3 Qc7 21.Qb2 b6 22.Re1 Re7 23.Nf1 Qd8 24.Ne3 Qe8 25.Nd1 e4 26.de4 Ne4 27.Bg7 (better 27.Re3+=) 27...Ng5?? (better 27...Ng3 28.Re7 Qe7=) 28.Re7+- Qe7 29.Ne3 (29.Bc3 Be5+-) 29...Ne6? (better 29...Bg3!? 30.Bc3 Bd6+=) 30.Bc3 f5 (30...Nc7 31.Qd2+-) 31.Nd5 Qd8 32.Nf6 Nf6 33.Bf6 Be7 34.Be5 (34.Be7 Qe7 35.Bd5 Kf8 36.Qh8 Kf7+-) 34...Kf7 (34...Nf8 35.Bh8 Ne6 36.Qe5+-) 35.Bd5 Bf6 36.Bf6 (better 36.Qa1! f4+-) 36...Qf6 37.Qf6 Kf6 38.Be6 Ke6 39.f4 Kf6 40.Kf2 Kg7 41.Kf3 Kh6 42.g4 Kh7 43.Kg3 Kh6?? (43...Kg7+-) 44.Kh4 fg4 45.hg4 Kg7 46.Kg5 Kf7 47.f5 gf5 48.Kf5 Kg7 49.Ke5 Kf7 50.Kd5 1-0. Zobbie (2390) - universe64 (2450), lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2 e6)

4.d3 Nd7 5.Nd2 Ngf6 (5...e5 6.Ngf3 (6.d4 a5 7.b5 e4 8.c4 Ngf6 9.cd5=) 6...Bd6 7.c4 d4 8.e3 de3 9.fe3=) 6.g3 (6.h3 Bh5+= 7.g4 Bg6 8.Bg2 c5 9.c4=; 6.f3 Bh5 7.e4 Bd6 8.Qe2 e5 9.g4=) 6...c5 (6...e5 7.h3 Be6 8.Ngf3 Bd6 9.c4+=) 7.c3 (7.h3 Bf5 8.Rb1 cb4 9.g4+=) 7...Qb6 (7...Bd6 8.h3 Bh5 9.Bg2+=) 8.Bg2 (8.h3 Bh5 9.Rb1+=) 8...cb4 (8...e5 9.Qb3+=) 9.ab4 (9.cb4=) 9...a5 (9...e5 10.Ngf3+=) 10.Ngf3 (10.h3 Bh5+=) 10...Be7 (10...Bc5 11.d4 Bd6 12.Qb3=) 11.0-0 (11.Qb3 0-0 12.ba5 Ra5 13.Qb6 Ra1 (13...Nb6?? 14.Ra5 Ra8 15.Ra8 Na8 16.Ne5+-) 14.Ba1 Nb6=) 11...0-0+= 12.Ba3 ab4 13.cb4 (13.Bb4 Bb4 14.Rb1 Qc7 15.Rb4 Qc3 16.Rb7 Ra2+=) 13...Bb4 14.Bb4 Bf3?? (14...Qb4 15.Rb1 Qd6 16.Rb7–/+) 15.Nf3?? (better is 15.Bf8 Ra1 16.Qa1 Be2 17.Be7+-) 15...Qb4+= 16.Rb1 Qc3 17.Rb7 Ra2 18.Rb3 Qc7 19.e3 Rc8 20.Rb1 h6 21.Rc1 Rc2 22.Rc2 Qc2 23.Qc2 Rc2 24.h3 Nc5 25.Rd1 Nfd7 26.Ne1 ½–½. De Visser,Arno – de Jong, Sas van Gent, 1992.

4.d4 c6 5.Nd2 (5.Nf3 Nf6=+) 5...a5 (5...Nf6 6.Ngf3=+) 6.Ngf3 (6.h3 Bf5=+) 6...ab4 7.ab4 Ra1 (7...Ra1 8.Qa1 Bb4=+) 0–1. nimzo1 (1895) – michaelbuss (2860), ChessWorld.net, 2017.

4.d4 Nf6 5.h3 Bf5 6.e3 Nbd7 7.c4 a5 8.c5 ab4 9.ab4 Ra1 10.Ba1 Qa8 11.Bc3 Be7 12.Bd3 0-0 13.Ne2 (13.Bf5 ef5 14.Qd3 Ne4=) 13...Qa2 (13...Bd3!? 14.Qd3 b6=+) 14.Bf5+= ef5 15.Qd3 Ra8 16.Qf5 Ne4 17.0-0 Qe2 18.Qd7 Bh4 19.Be1 g6 (19...Qd3 20.Qd5 Ra1 21.Qd7-/+) 20.Nc3+/- (20.Qc7 Ra1 21.Qb8 Kg7 22.Qe5 Nf6-/+) 20...Nc3 21.Bc3 Ra2 (21...Ra3 22.g3 Bf6 23.Ba1+/-) 22.Qe8 Kg7 23.Qe5 Bf6 24.Qd5 Qc2 25.Be1 Ra1 26.Qf3 Qc4 27.g3 c6 28.h4 h5 29.Kg2 Rc1 30.Rg1 Rc2 31.g4 hg4 32.Qg4 Qd5 33.Qf3 Bh4 34.Qd5 cd5 35.b5 g5 36.Kh1 Kg6 37.f3 Be1 38.Re1 Rb2 39.b6 Kf5 40.Ra1 g4 41.Rf1 gf3 42.Rf3 Ke6 43.Kg1 Ra2 (43...f6 44.Rh3 Kf5 45.Rh2 Rb1 46.Kf2+-) 44.Rh3 Kf5 (44...Ra8 45.Kf2+-) 45.Rh8 (45.Rh8 Rb2 46.Re8+-) 1-0. new_reflexx (2385) - marekt (2160), gameknot.com, 2020.

4.f3 Nf6?? 5.fg4+- Ng4 6.g3 (6.e4 Nf6 7.ed5 Nd5+-) 6...c5 (6...Bd6 7.Nh3 (7.Bg7 Nh2 8.e3 Bg3 9.Ke2 Qg5 10.Rh2 Qg7-/+) 7...Nh2 8.Rh2 Bg3 9.Rf2+-) 7.Nf3 cb4 8.ab4 Bb4? (better 8...Nf6+-) 9.Bg2 (better 9.c3 Bc5 10.Qa4 Nc6 11.Qg4+-) 9...0-0? (better 9...Ne3! 10.Qc1 Ng2 11.Kf2 Ne3 12.Ke3 0-0+=) 10.0-0+/- Qb6 11.Bd4 Bc5 12.Bc5 Qc5 13.e3 Nc6 14.c3 e5 15.Nd4 Ne3 (15...Nf6!? 16.Rf6! gf6+-) 16.de3 ed4 17.cd4 Qd6 (17...Qc4 18.Ra4 Nb4 19.Nd2+-) 18.Nc3 Ne7 19.Ra5 (19.Qb3 Rfd8 20.Ra5 Qe6 21.Nd5 Nc6+-) 19...Qh6 (19...b6 20.Ra6+-) 20.Nd5 (20.Qd3 b6 21.Nd5 Nd5 22.Rd5 Rae8+-) 20...Nd5 21.Rd5 Qe3 22.Kh1 Rad8 23.Rd8 Rd8 24.d5 (24.Re1 A) 24...Rd4?? A1) 25.Re3?! Rd1 26.Bf1 Kf8= (26...Rf1? 27.Kg2 Kf8 28.Kf1+-); A2) 25.Qa1 Qe1 26.Qe1+-; B) 24...Qf2 25.Bb7 h6+-) 24...g6 (24...b6 25.Re1 Qc3 26.Re7+-) 25.Qf3 (better 25.Qa1!?+-) 25...Qf3+/- 26.Bf3 f5 27.Rb1 b6 28.Ra1 Rd7 29.Kg2 Kg7 30.Kf2 Kf6 31.Ke3 Ke5 32.Kd3 g5 (32...Kd6!?+/-) 33.Re1+- Kd6 34.Kd4 Re7 35.Re7 Ke7 36.Ke5 f4 37.d6 Kd8 38.Bg4 (38.gf4!? gf4 39.Bc6 b5 40.Kf4 a6+-) 38...fg3 39.hg3 a5 40.Kd5 a4 41.Kc6?? (better 41.Kc4 h5 42.Bh5+-) 41...a3-+ 42.Be6 h5 43.Kb6 (43.Kb5 h4 44.gh4 gh4 45.Kb4-+) 43...h4 44.gh4 gh4 45.Kc5 h3! 46.Kb4 (46.Bh3 a2 Passed pawn) 46...h2 47.Bd5 a2! 48.Ba2 h1Q 49.Kc5 Qa8 50.Bd5 (50.Bc4 Qa3 51.Kc6 Qc3-+) 50...Qa7 51.Kc6 Qh7 52.Be6 Qh6 (52...Qe4 53.Bd5 Qc2 54.Kb5-+) 53.Bd5 (53.Kd5 Qh5 54.Kd4 Qb5-+) 53...Qf6 (53...Qc1 54.Kb5-+) 54.Kc5 (54.Bc4 Qc3 55.Kd5 Qb4-+) 54...Kd7 (better 54...Qc3 55.Bc4-+) 55.Bc6 Kd8 56.Bd5 Qe5 57.Kc6 (57.Kc4 Kd7 58.Kc5 Qe3 59.Kb4 Kd6-+) 57...Qd4 (better 57...Qc3 58.Kb6 Kd7-+) 58.Bc4 (58.d7-+) 58...Qe5 (58...Qc4 59.Kb6 Kd7 60.Kb7 Qb3 61.Ka6 Kc6 62.d7 Qb6) 59.Bd5-+ Qd4 (better 59...Qc3 60.Kb6-+) 60.d7?? (60.Bc4 Qc4 61.Kb6 Kd7 62.Kb7 Qb3 63.Ka6 Kc6 64.d7 Qb6) 60...Qc3 61.Kd6 Qd4 62.Ke6?? (62.Kc6 Qf6 63.Kc5 Kd7-+) 62...Qd5 (better 62...Qb6 63.Ke5 Kd7-+) 63.Kd5= Kd7 ½-½. black_bishop_88 (2465) - Meshter (2400), lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2)

4.Nf3 Nd7 5.e3 Ngf6 6.Be2 c6 7.0-0 Bd6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4 5.Be2 e6 6.a3 Nbd7 7.0-0 Bd6).

4.Nf3 Bf3 5.ef3 Nf6 6.Be2 (--> 3.Nf3 Bf3 4.ef3 e6 5.a3 Nf6 6.Be2).

4.g3 Nf6 5.Bg2 Nbd7 6.Nf3 Be7 7.0-0 0-0 8.d3 h6 (8...c5 9.bc5 Bc5 10.Nbd2=+) 9.Nbd2= c6 10.c4 Qc7 11.Rc1 dc4 12.dc4 (12.Nc4 Rfd8+=) 12...a5 13.c5 ab4 14.ab4 Nd5 15.Qb3 Bf6 (15...b6 16.e4 N5f6 17.cb6 Qb6 18.Bc3=) 16.Bf6 N7f6 17.Nc4 Bf3 (17...Rfd8 18.Rfd1=) 18.Bf3+= Ra7 19.Nd6 (19.Ra1!? Rfa8 20.Ra7 Ra7 21.e4+=) 19...Rfa8= 20.Bd5 (20.b5 Ra3 21.Qb2 b6=) 20...ed5=+ (worse 20...cd5 21.Nb5 Qe5 22.Na7 Ra7 23.Qd3+/-; 20...Nd5?! 21.e4 Nf6 22.Rfd1+=) 21.Rb1 Ra3 22.Qc2 b6 23.e3 b5 24.Qb2 Ra2 25.Qc3 (25.Qd4 Qe7=+) 25...R8a3 (25...Qd7 26.Kg2-/+) 26.Qd4 Ra4 (26...Qd7 27.Rb2=) 27.Ra1= Qe7 28.Ra2 Ra2 29.Ra1 Ra1 30.Qa1 Ne4 (30...Kh7 31.Qa8 Ng4 A) 32.Qc6?? Qf6 33.Ne4 Qc6-+ (33...de4? 34.Qe4 Kg8 35.Qg4+-); B) 32.Qc8=) 31.Qa8 Kh7 32.Qc6?? (better 32.Qb7 Qb7 33.Nb7+/-) 32...Qe6 (better 32...Qf6 33.Ne4 Qc6-+) 33.Qb5 (33.Qe8!? Qg4 34.Qf7 Qd1 35.Kg2 Nd2+-) 33...Nd6 34.cd6 Qd6 35.Qc5 Qb8 36.b5 Kg6 (36...Qa8 37.Qc2 Kg8 38.b6+-) 37.Qd5 f6 (37...Kf6 38.Qd4 Ke7 39.Qg7 Qb5 40.Qh6 Qb1 41.Kg2 Qe4 42.Kf1 Qd3 43.Ke1 Qc3 44.Ke2 Qc2 45.Kf3 Qd1 46.Kf4+-) 38.Qc6 h5 (38...Kf7 39.b6 Ke7 40.b7+-) 39.Kg2 (39.b6 h4 40.Qc7 Qa8+-) 39...h4 (39...Kf7 40.b6 Ke7 41.b7+-) 40.b6 hg3 (40...Qe5+-) 41.hg3 Qe5 42.b7 Kh6 43.g4 Kh7 44.Qf3 Qc7 (44...g6 45.Qc6+-) 45.Qf5 Kh6 46.Qf4 (46.Qh5) 46...Qf4+- 47.ef4 Kg6 48.b8Q (48.b8Q Kf7 49.Qb3 Kf8 50.f5 Ke7 51.Qe6 Kd8 52.Qg8 Kd7 53.Qg7 Kd6 54.Qf6 Kd5 55.Qe6 Kc5 56.f6 Kb4 57.f7 Kc3 58.Qc6 Kb2 59.f8Q Kb3 60.Qb8 Ka3 61.Qca8) 1-0. dannysmet (2065) - ehsan4444 (2035), Rated Blitz game, lichess.org, 2021.

5.Nd2 a5 6.c3 Be7 7.Ngf3 Nbd7 8.g3 0-0 9.Bg2 c6 10.0-0 Qc7 11.h3 Bh5 12.Qb3 Qb6 13.Rfe1 a4 (13...Bf3 14.Bf3 Bd6 15.e3=+) 14.Qc2= Bg6 15.Nh4 e5 16.Ng6 hg6 (16...fg6 17.c4+=) 17.c4 Rac8 (17...c5 18.cd5 cb4 19.Nc4+=) 18.Rac1 (18.Qa4 Qc7+-) 18...Rfe8 (18...Ra8!?+/-) 19.Qa4+- Ra8 20.Qc2 Bf8 21.e4 de4 22.de4 c5 23.b5 Qa5 (23...g5 24.Qd3+-) 24.Ra1 Nb6 25.a4! Nfd7 (25...Na4 26.Ra2 Decoy) 26.Bc3 Qa7 27.a5 Nc8 28.Nf1 Nd6 29.Ne3 Qb8 30.Nd5 Nc4 31.Qb3 (better 31.b6!? Qd8+-) 31...Nd6 32.f4 (32.b6!? c4 33.Qb1+-) 32...c4 33.Qc2 (33.Qb1 ef4 34.gf4 Nc5+/-) 33...Nc5 (33...Nb5 34.Bb2 Bc5 35.Kh1=) 34.fe5 (better 34.Nb6 Nd3 35.Reb1 ef4 36.Na8 Qa8 37.gf4 Nf4 38.e5+=) 34...Re5?? (better 34...Nb5 35.Nb6 Nd3 36.Na8 Nc3 37.Qc3 Ne1 38.Re1 Qa8+=) 35.Be5+- Qd8 (35...Nd3 36.Bd6 Ne1 37.Re1 Qd6+-) 36.Bd6 Bd6 37.Qc4 Bf8 (37...Ne6 38.Red1 Qg5 39.g4+-) 38.Rad1 (better 38.a6 ba6 39.ba6 Ra7+-) 38...Ne6 (38...Ra5 39.e5 Qg5+-) 39.Nf6! Qf6 (39...Qf6 40.e5 Decoy; 39...gf6 40.Rd8 Discovered attack) 40.Rd5 (40.e5 Qg5 41.Qc3 Bc5 42.Kh2 Qe7+-) 40...Qe7 (40...Ra5 41.Rd7+-) 41.e5 (better 41.Ra1 Nc7 42.Rd3 Qe5+-) 41...b6? (41...Nc7+-) 42.a6 Nc5 (42...Ra7 43.Kh2+-) 43.Rc5 (better 43.Rd6 Re8 44.Bd5+-) 43...bc5 (43...Qc5 44.Qc5 Bc5 45.Kh2 Ra7+-) 44.Ba8 Qe6 45.Bd5 Qd5 46.Qd5 c4 (46...c4 47.a7 Be7 48.a8Q Kh7 49.Qf7 Bc5 50.Kg2 Bf8 51.Qaf8 Kh6 52.Q8g7 Kg5 53.Qgg6; 46...Be7 47.a7 c4 48.a8Q Kh7 49.Qf7 Bc5 50.Kg2 Bf8 51.Qaf8 Kh6 52.Q8g7 Kg5 53.Qgg6). Zobbie (2380) - universe64 (2400), lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2 e6)

5.Nd2 Bd6 6.Ngf3 Nbd7 7.h3 Bh5 8.c4 dc4 (8...0-0 9.g4 Bg6 10.h4=) 9.Nc4 Be7 (9...Bf3 10.gf3 0-0=) 10.g3 (10.g4 Bg6+=) 10...0-0 (better 10...Bf3!? 11.ef3 0-0-/+) 11.Bg2= Nb6 12.Na5 Qc8 13.0-0 c6 14.Ne5 (14.Rc1 Qc7+=) 14...Nfd7 (14...Nfd5 15.Qc2=) 15.Nec6 (15.Nd7!? Qd7 16.Rc1=) 15...bc6= 16.Nc6 Re8 (16...Bd6!?=) 17.Rc1 Qa6 18.Ne7 Re7 19.Ba8 Na8 20.Qc2 Nab6 21.Qc3 f6 22.Rfe1 Nf8? (22...e5 23.Rc2+=) 23.Qb3 (better 23.Qc5 Nd5 24.e4+/-) 23...Bf7= 24.Bd4?? (better 24.Qc2=) 24...e5-+ 25.Qc3 ed4 26.Qd4 Qa3 27.Rc6 (27.e3 Rd7 28.Qc3 Rd3 29.Qa3 Ra3-+) 27...Rd7 (27...Qa4 28.Rcc1-+) 28.Qg4? (28.Ra1 Qb3 29.Qc3-+) 28...Nd5 29.b5 Qb4 (better 29...Qb2-+) 30.e4?? (30.Qb4 Nb4 31.Rc3-+) 30...Qe1 31.Kg2 Nb4 32.Rc8 Be6 33.Qe6 Rf7 34.Qc4 (34.Rf8 Kf8 35.Qc8 Ke7 36.Qc7 Ke6 37.Qc4 Kd6 38.Qf7 Kc5 39.Qa7 Kb5 40.Qd7 Kb6 41.Qg7 Nd3 42.Qf6 Kc5 43.Qg5 Kc4 44.Qd5 Kc3 45.Qa5 Kd4 46.Qa7 Kc4 47.Qc7 Kd4 48.Qd7 Kc4 49.Qf7 Kd4 50.Qg7 Kc4 51.Qg8 Kc3 52.Qh8 Kc4 53.Qc8 Kd4 54.Qd7 Kc4 55.Qc6 Kd4 56.Qa4 Kc5 57.Qc2 Kd4=) 34...Nd3 (34...Qb1 35.Rc7 Qa2 36.Rf7 Qc4 37.Rf8 Kf8 38.dc4 Ke7-+) 35.Qd3 (better 35.Rf8!? Kf8 36.Qc8 Ke7 37.Qc7 Ke8 38.Qc8 Ke7 39.Qc7 Ke6 40.Qc6 Ke7 41.Qc7=) 35...Qa1 (35...f5 36.ef5 g6 37.Rc5-/+) 36.Qf3 (better 36.Qd5!? Qa5 37.Rc6-/+) 36...Qe5 37.Qf5 Qe7 (37...Qf5!? 38.ef5 Rb7 39.Rc5-+) 38.Qd5 g6 39.Rc7?? (better 39.Qc6-+) 39...Kg7 (better 39...Qc7 40.Kf3 Qd7-+) 40.Re7+- Re7 41.Qd6 Rf7 0-1. Zobbie (2390) - universe64 (2395), lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2 e6)

5.Nc3 Nf6 6.e3 c5 7.bc5 Bc5 8.Nge2 0-0 9.Ng3 (9.g4!? Bg6 10.h4=) 9...Bg6=+ 10.Bd3 Nc6 11.Bg6 hg6 12.0-0 e5 13.Kh1 Re8 14.f4 ef4 15.Rf4 Bd6 16.Rf3 Ne4 (16...Ne5!? 17.Rf1 Nfg4-/+) 17.Nge4= de4 18.Rh3 Qg5 19.Qe2 Rad8 20.Rf1 Be5 (better 20...Rd7=) 21.Ne4+/- Qe7 22.Be5 Qe5 23.d3 Ne7 (23...Qe7 24.Qg4 Rd5 25.Rh4+/-) 24.Qf3 f5 (24...Qf5!?+/-) 25.Ng5+- Nc6 (25...Qc3 26.Qg3 (26.Qb7?! Qc2 27.Qb4 Qe2+/-) 26...Qc2 27.Qh4+-) 26.d4 (26.Rh8! Kh8 27.Nf7 Kg8 28.Ne5 Re5+-) 26...Qb5 27.Kg1 Ne7 (27...Qc4 28.Qf2 Kf8 29.c3+-) 28.Qf4 Qc4 (28...Rc8 29.Qh4 Kf8 30.Qh8 Ng8 31.g4+-) 29.Qh4 Kf8 30.Qh8 Ng8 31.Nh7?? (better 31.g4 Re7 32.gf5 gf5 33.Rf5 Ke8 34.Rhf3+-) 31...Kf7+/- 32.Ng5 Kf8 33.Rhf3 Rd5 34.Nh7 (better 34.g4!? Qc2 35.gf5 Rf5+-) 34...Kf7 35.Ng5 Kf8 36.Qh4 (36.g4!? Qc2 37.gf5 Rf5+-) 36...Qe2 (36...b5!?+-) 37.e4 Rd4 38.Nh7 (38.Qh7!? Rd2 39.R3f2 Qe3 40.Qg6 Nh6 41.Nh7 Ke7 42.Qg7 Kd6 43.ef5 Rf2 44.Rf2 Re7 45.Qg6 Kc7+-) 38...Kf7 39.Qg5?? (better 39.Qg3 Rd1 40.Ng5 Kf6 41.ef5 Rf1 42.Rf1 Qe3 43.Qe3 Re3 44.Nh7 Kf7 45.fg6 Kg6 46.Nf8 Kh6 47.Rf7+/-) 39...Rde4 40.Rf5?? (better 40.Qg3 R4e5 41.Ng5 Kf8 42.Rb3=) 40...Ke6?? (better 40...gf5 41.Qf5 Ke7-+) 41.Qg6 Kd7 42.Rf7 (42.Qf7 Kc6 43.Nf8 Qe3 44.Kh1 Rf8 45.Qd5 Kc7 46.Qa5 Qb6 47.Qc3 Qc6 48.Qg7 Ne7 49.Qg3 Qd6 50.Qc3 Qc6 51.Qa5 Kb8 52.Rf8 Nc8+-) 42...R8e7 (42...Kc8 43.Qg7 Qe3 44.Kh1+-) 43.Re7 (43.Rg7 Rf4 44.Rf4 Qd1 45.Rf1 Qd4 46.Kh1 Qg7 47.Rd1 Kc8 48.Qf5 Rd7+-) 43...Re7 44.Qf5 (44.Nf8 Kc7 45.Qg3 Kc6 46.Qc3 Kd6 47.Qd4 Kc6 48.Qa7 Nf6+-) 44...Kc7 45.Nf8 (45.Qa5 Kc6 46.Qc3 Kd6 47.Qd4 Kc7 48.Qa7 Qc2+-) 45...Nf6 (45...Qe3 46.Kh1+/-) 46.Qf4 (better 46.Qa5!? Kc6 47.Qa4 Kd6 48.Qa7 Qe3 49.Qe3 Re3 50.Rb1+/-) 46...Kc8+= 47.Ng6 Qe3 48.Qe3 Re3 49.Kf2 (49.a4 Re2+=) 49...Rc3 (49...Ra3 50.Ke2=) 50.Kg1 (50.Ne7 Kd7 51.Nf5 g5=) 50...Ra3=+ 51.Nf4 Kb8 (51...Re3 52.c4=+) 52.Nd3 (52.Ne6!?+=) 52...a6 53.Nb4 (53.Re1!?=+) 53...Rc3-/+ 54.Nd3 (54.Rf2 a5 55.Na2 Rc4-/+) 54...Ka7 (54...Rc2 55.Nf4-+) 55.Ne5 (55.Rf2!?-/+) 55...Rc2-+ 56.Nf3 a5 (56...Nd5 57.Nd4 Rd2 58.Nf5-+) 57.Nd4-/+ a4?? (better 57...Rb2-/+) 58.Nc2+- a3 (58...Ka6 59.Rf5+-) 59.Na3 Ka6 (59...Kb6 60.Rf6! gf6 61.h4+-) 60.Nc4 Kb5 (60...Ne4 61.Rf4 Nc3 62.Rg4+-) 61.Nd2 (better 61.Rf6 gf6 62.h4 Kc4+-) 61...Ne4 (61...Kc6+-) 62.Ra1 (better 62.Ne4 Kc6 63.Rd1+-) 62...Nd2 63.Rb1?? (better 63.Rd1 Ne4 64.Rd7+-) 63...Kc4 (better 63...Nb1 64.g4 Kc4-+) 64.Rc1 (64.Rc1 Kd4 65.Rc7+-) 1-0. black_bishop_88 (2700) - chessplayer7878 (2310), Hourly SuperBlitz Arena, lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2)

5.e3 Nf6 6.d4 (6.Ne2 Bd6=) 6...Bd6 7.c4 dc4 8.Bc4 Nd5 9.Qe2 Qh4 10.Kf1 Nb6 (worse 10...Bh2 11.g4 Bg4 12.fg4 Qf6 13.Kg2 Bg1 14.Kg1+/-) 11.Bd3 Bd3 (11...Bh2? 12.e4 Bg6 13.g4+-) 12.Qd3 N8d7 (12...Bh2 13.f4 Nd5 14.Bc1+-) 13.f4 a5 14.b5 0-0 15.Nf3 Qh5 16.Kf2 Na4 17.Bc1 Rac8 18.Rf1 (18.Bd2 c5 19.Ba5 cd4 20.Qd4 Rc2 21.Bd2 Ndc5-/+) 18...c6 (18...c5 19.Nbd2 Rfd8 20.Ne4 cd4 21.ed4-/+) 19.bc6 (19.Bd2 c5 20.Ba5 c4=+) 19...Rc6-/+ 20.Qb3 Nab6 21.Nc3 Rfc8 22.Nb5 a4 23.Qd3 Bb8 24.Kg1 Nf6 25.Re1 Qd5 26.Rb1 Rc2 27.Rd1 Ne4 28.Nd2 (28.Bd2 f5=+) 28...Nc3-/+ 29.Nc3 R8c3 30.Qf1 Nc4 31.Nc4 Rc4 32.Qf3 Qf3 33.gf3 Bd6 34.Bd2 Ba3 35.Rb7 Bb2 36.Ra7 g6 37.Kf1 a3 38.Ke2 R4c3 39.Ra5 Kg7 40.Ra7 Rb3 41.h3 Rb8 42.Rg1 h6 43.h4 Rb5 44.Rb1 Rb3 45.Ra6 Rbc3 46.Rd1 Rb3 ½-½. Mely - killR (2295), ChessWorld.net, 2006.

5.e4 c6 (5...de4 6.Qe2 Bg6 7.Qb5 Nd7 8.Qb7=) 6.Qe2 (6.ed5 ed5 7.Ne2 Nf6=) 6...Nd7 (6...de4 7.Qe4 Bg6 8.Qc4=+) 7.h4 (better 7.ed5 cd5 8.Nc3=) 7...Be7?? (better 7...de4 8.Qe4 Bg6=+) 8.g4 (8.Bg7 Bf6 9.Bh8 Bh8+-) 8...Bh4+/- 9.Kd1 Bg6 (9...Bf6 10.e5 Bg6 11.ef6 Ngf6+-) 10.Bg7 (better 10.Rh4!? Qh4 11.Bg7 de4 12.Bh8 ef3 13.Nf3 Qg4 14.Bb2+/-) 10...Bf6+/- 11.Bh8 Bh8 12.c3 a5 (12...de4 13.fe4 a5 14.b5+=) 13.ba5 (better 13.ed5!? cd5 14.f4+/-) 13...Qa5+= 14.Nh3 (14.d4+=) 14...Qc7 (14...de4 15.fe4 Nc5-/+) 15.Qh2 (15.g5 Qa5 16.Bg2 Qa4 17.Ke1 Nc5=) 15...Be5 (better 15...Qh2!? 16.Rh2 de4 17.fe4 Ngf6=) 16.f4+/- Bd6 17.e5 Be7 18.Nf2 (18.d3+/-) 18...Bb1? (18...Qb6 19.f5 Qb2 20.fg6 hg6-/+) 19.Rb1+- Ra3?? (better 19...h6+-) 20.Qh7 Kf8 21.Bd3 (better 21.Qh8 b5+-) 21...Nc5 (21...Ra4 22.Qh8 Rf4 23.Bh7+-) 22.Bc2 (22.Qh8 Nd3 23.Nd3 Qd8+-) 22...Ra2 (22...Qa5 23.Qh8 Ra1 24.Ra1 Qa1 25.Ke2 Qa6 26.Ke1 Qa1 27.Nd1+-) 23.Qh8 Qa5 (23...Nd7 24.Rh7 Bf6 25.ef6 Ndf6 26.Qg7 Ke8 27.Rh8+-) 24.Bh7 (24.Rh7 Rc2 25.Qg7 Ke8 26.Qg8 Kd7 27.Qf7 Qd8 28.Kc2 Qe8+-) 24...Ke8 (24...Qa4 25.Ke1 Bh4 A) 26.Bg8 Bf2 27.Kf1 Qc4 28.Kg2 Qe4 29.Kh2 Qf4 30.Kg2 Qg4 (30...Qd2?? 31.Bf7 Kf7 32.Rh7 Kg6 33.Qg7) 31.Kf1 Qc4 (31...Qg8?! 32.Kf2 Rd2 33.Kf1-+) 32.Kg2 Qe4 33.Kh2 Qf4 34.Kg2 Qg3 35.Kf1 Qd3 36.Kg2 Qg6 37.Kf1 Qb1 38.Kg2 Qg6 39.Kf2 Ne4 40.Ke1 Ra1 41.Ke2 Qg2 42.Ke3 Qf2 43.Kd3 Qd2; B) 26.Rh4 Qf4 27.Rd1+-) 25.Qg8 (25.Bg8 Bf8 26.Qf6 Qc7+-) 25...Kd7 (25...Bf8 26.Bc2 Rc2 27.Rh8 Rd2 28.Kd2 Qa2 29.Ke3+-) 26.Qf7 Qa4 27.Ke1 Ra1 28.Rd1 Rd1 29.Nd1 Ne4 (29...Na6 30.Bg6 Nc7 31.Rh7+-) 30.f5 (30.Bg6 Qc2 31.Qe8 Kc7 32.Qe7 Kb6 33.Qb4 Ka6 34.Be4 Qe4 35.Qe4 de4+-) 30...Ng3 (30...Ng5 31.fe6 Kd8 32.Qg8 Kc7 33.Qe8+-) 31.Qe6 (31.f6 Qg4 32.Qe7 Kc8 33.Qf8 Kd7 34.Qg7 Qg7 35.fg7 Nh1+-) 31...Kc7 (31...Kd8 32.f6 Bc5 33.Bf5 Nf5 34.Rh8 Kc7 35.Qf5+-) 32.Qe7 Kb6 33.Qb4 Qb4 34.cb4 Nh1 35.f6 (35.f6 Kb5 36.f7+-) 1-0. black_bishop_88 (2525) - Marty83 (2490), lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2)

5.g3 Nf6 6.Bg2 c5 7.Nh3 cb4 8.ab4 Bb4 9.0-0 Nc6 10.Kh1 0-0 11.Nc3 (11.Nf4 Bd6-/+) 11...Bd6 (11...d4 12.Na2 Bd6 13.c3-+) 12.e3 Bg6 13.Nf4 Bf4 14.gf4 d4 15.Ne4 de3 16.de3 Qd1 17.Rfd1 (17.Nf6 gf6 18.Rad1 Bc2-/+) 17...Ne4 (17...Nd5 18.Ra3-+) 18.fe4-/+ Rfd8 19.Ba3 Rd1 20.Rd1 Rd8 21.Rd8 Nd8 22.Kg1 Nc6 23.Kf2 b5 24.c3 a5 Black intends b4 (24...e5 25.Bd6-/+) 25.f5 Bh5 (25...ef5 26.ef5 b4 27.cb4 (27.Bc6? ba3 28.Bd5 Bf5-+; 27.fg6 ba3 28.gf7 Kf8-/+) 27...ab4 28.Bb2 (28.Bc6 ba3 29.Bd5 Bf5-+; worse 28.fg6 ba3 29.gf7 Kf8-+) 28...Bf5 29.Bc6+/-) 26.fe6 (26.Bd6!? e5 27.Bf1-/+) 26...fe6-+ 27.Bf1 b4 28.cb4 ab4 29.Bb2 Kf7 30.Bc4 Bd1 31.Bb5 Ne7 32.Bc4 Bc2 33.Kf3 Ng6 34.h4? (34.h3 h6-+) 34...b3 (better 34...Nh4 35.Kg4 Ng6-+) 35.h5 Ne7 36.Kf4 g6 (36...Nc6 37.Bb5 Nb4 38.Ke5-+) 37.h6 (37.Ke5 gh5 38.Be6 Kg7 39.Kd6 Kf8=+) 37...Ng8 (37...Nc6 38.Be2-+) 38.Ke5-/+ Nh6 39.Be6 Ke7 40.Bc4 (40.Ba3!? Ke8 41.Kf6 Be4 42.Bc1-/+) 40...Nf7-+ 41.Kd4 Nd6 42.Bd5 Be4?? (better 42...h5 43.Ke5 Nf7 44.Kf4 g5 45.Kf5 g4 46.Ba3 Ke8-+) 43.Be4+= Ne4 44.Ke4 h5 45.Kf4 Kf7 46.Kg5 Ke6 47.Kg6?? (better 47.e4+=) 47...Kd5 (better 47...h4 48.Kg5 h3-+) 48.Kf5+- (48.Kh5?! Ke4=) 1-0. black_bishop_88 (2525) - Mia_Khaliffa (2480), lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2)

5.e3 Bd6 6.Nc3 (6.h3 Bf3 7.Qf3 Nbd7=) 6...c6 (6...a5 7.Nb5=+) 7.h3 (7.Be2 0-0=+) 7...Bf3 8.Qf3 Nbd7 9.g4 (9.d4 0-0=+) 9...Ne5 (9...a5 10.b5=) 10.Qg2= a5 (10...Ng6 11.h4=) 11.f4 (11.b5 0-0=) 11...Nc4 (11...Ng6 12.b5=+; 11...ab4 12.fe5 ba3 13.Ba3 Be5 14.Bd3=) 12.Bc4= dc4 13.b5 Qb6 (13...Rc8 14.g5 Nd7 15.Qe4=) 14.g5 Nd5 15.Qe4 Nc3 (15...0-0 16.Qc4 Rac8 17.Rb1+=) 16.Bc3 0-0 (16...Qb5? 17.Bg7 Rg8 18.Qh7+-) 17.bc6 bc6 18.Qc4 Ba3 19.Bd4 Qb7 20.Bg7! Kg7 Decoy to g7 21.Qc3 Theme: Double Attack 21...Kg8 (21...e5 22.Qa3 (worse 22.Qe5 Kg8–+) 22...ef4 23.ef4 Rfe8 24.Kd1+=) 22.Qa3 c5 (22...a4 23.Rf1+-) 23.Kf2 (23.Rg1 Qf3+-) 23...Qd5 (23...a4 24.d3+-; 23...c4 24.d3+-) 24.Qc3 (24.d3 c4+-) 24...c4 (24...Rfb8 25.Rhg1+-) 25.Rhg1 Rfc8 (25...a4 26.Ra3+-) 26.Ra4 Rd8 (26...Rc5 27.h4+-) 27.Ke2 Rdc8 28.Qe5 Qe5 29.fe5 Rc5 30.Rg4 Re5 (30...Rac8 31.h4+-) 31.Rac4 Kg7 32.h4 Kg6 (32...f5 33.Rc7 Kg6 34.Rd4+-) 33.Rgf4 (33.d4 Rb5 34.Rf4 Rf5+-; 33.Rc7 a4 34.d4 Rb5+-) 33...Ra7 (33...Rf5 34.Rf5 ef5 35.Rc6 Kg7 36.Rf6+-) 34.Ra4 Rc5 (34...Rf5 35.Rf5 Kf5 36.c4+-) 35.Rf6 Kg7 36.c4 Rac7 37.d3 h6?! (37...Rc8+-) 38.Rh6 Rc8 39.Kf3 (39.Kd2 Rf5+-) 39...Rf5 40.Ke4 Ra8 41.d4 Rf1 (41...f6 42.c5+-) 42.Ke5 (42.c5 f6+-) 42...Re1 43.e4 Ra6 (43...f5 44.Re6 (worse 44.Ke6 Re4 45.Kf5 Rd4+-) 44...Re4 45.Kf5 Rd4 46.h5+-) 44.c5 (44.d5 Ra8 45.de6 fe6+-) 44...Rc1 (44...Ra8 45.c6+-) 45.Ra2 (45.Rf6 Rh1 46.Rf4 Rc1+-) 45...a4 46.Rf6 a3 (46...Rg1 47.d5 Ra5 48.Kd6+-) 47.g6! fg6 48.Rf3 Rh1 (48...g5 49.Rfa3 Ra3 50.Ra3 gh4 51.Ke6+-) 49.Rfa3 Ra3 50.Ra3 Rh4 (50...Rh2 51.Ra7 Kh6 52.Ra8+-) 51.c6 Rh8 52.Ra7 Kh6 53.c7 g5 54.d5 ed5 55.ed5 g4 56.d6 g3 57.d7 g2 (57...Kh5 58.c8Q Re8 59.de8Q Kh4 60.Rh7 Kg5 61.Qf5) 58.d8Q g1Q (58...Re8 59.Qe8 g1Q 60.Ra6 Kh7 61.Qh5 Kg7 62.Qh6 Kf7 63.Rf6 Ke7 64.Qf8 Kd7 65.c8Q) 59.Qh4 Kg6 60.Ra6 Kg7 (60...Qb6 61.Rb6 Kf7 62.Qf6 Kg8 63.c8Q Kh7 64.Qch8) 61.Qe7 (61.Qe7 Kg8 62.c8Q) 1–0. marekt – Wilfie, ChessWorld.net, 2003.

5.e3 Nbd7 6.d4 (6.Be2 Bd6=) 6...a5= 7.b5 Bd6 (7...Nb6 8.Bd3=+) 8.c4= c5 (8...dc4 9.Bc4 0-0 10.0-0=) 9.bc6 (9.dc5 Nc5 10.cd5 ed5=) 9...bc6 10.c5 Qb8 (10...Bc7!?=+; 10...Bh2 11.Nbd2 (worse 11.Rh2 Bf3 12.Qd2 Qc7–/+) 11...Bb8 12.Qa4=) 11.Bc3= Be7 (11...Bh2 12.Nbd2 (12.Rh2? Bf3 13.gf3 Qh2–+) 12...Ne4 13.Qc2 Bf3 14.Nf3=+) 12.Nbd2 0-0 13.Be2 Qc7 14.0-0 Rfb8 15.Qa4 Attacking the isolated pawn on a5. The isolani on a5 becomes a target (15.Bd3!?+=) 15...Ne4 16.Qc2 (16.Rfc1 e5 17.h3 Bh5 18.Ne5 Nc3 19.Rc3 Be2 20.Qc6 Ra7 21.Qd5 Ne5 22.Qe5 Qe5 23.de5 Rd7=) 16...Nc3 17.Qc3 Bf5 (17...e5 18.Kh1=+) 18.Bd3 (18.Rad1 Bf6=) 18...Bd3 19.Qd3 e5 20.Qc2 e4 21.Ne1 Rb7 22.Qc3 (22.f3 Bg5 23.Qc3 Nf6=) 22...Nf6 23.g3 Rab8 24.Ng2 Nd7 (24...Rb5 25.Rab1=+) 25.Qc2 (25.Rab1 Rb1 26.Rb1 Rb1 27.Nb1 Qb7=) 25...Rb2 26.Qc3 R2b5 27.Rfb1 Bf6 28.Qc2 g5 (28...Qb7 29.Rb5 Qb5 30.Rb1=) 29.Rb5 Rb5 30.Rb1 Rb1 31.Qb1 Nf8 32.a4 (32.f3 ef3 33.Nf3 Qd7=) 32...Ng6 (32...g4 33.Nf4=) 33.Qb6 (33.f3 ef3 34.Nf3 g4=) 33...Bd8 34.Qc7 (34.Qa6 g4=) 34...Bc7 35.h3 (35.f3 ef3 36.Nf3 g4=) 35...Kg7 (35...f5 36.Kf1=) 36.Ne1 (36.f4 h5=) 36...h5 37.Kg2 (37.f4 Kf6=+) 37...f5 38.Nb3 (38.f3 Kf6=+) 38...h4 39.gh4 Nh4 40.Kg1 Kg6 41.Nd2 Kh5 42.Ng2 f4 43.Ne1 (43.ef4 gf4 44.Kf1 Ng2 45.Kg2 f3 46.Kf1 Kh4–+) 43...f3 (43...Nf5 44.Ng2–/+) 44.Nb3 (44.Kf1 Nf5–/+) 44...Nf5 45.Nd2 Ng7 46.Kf1 (46.Nef3 ef3 47.Nf3 Ne8–/+) 46...Ne8 47.Nef3 (47.Kg1 Kh4 48.Nef3 ef3 49.Nf3 Kh5–/+) 47...ef3–+ 48.Nf3 Nf6 49.Ne1 (49.Ng1!?–+) 49...Ne4 50.Nd3 Kh4 51.f4? (51.Kg2–+; better 51.Kg2–+) 51...gf4 52.ef4 Ng3 (better 52...Kh3 53.Ke2–+) 53.Kf2 (53.Kg2 Nf5 54.Ne5 Nd4–+; 53.Ke1 Nf5 54.Kd2 Nd4–+) 53...Kh3 54.Ne5 (54.Ne1–+) 54...Be5 55.fe5 Ne4 56.Kf3 Ng5 57.Kf4 (57.Ke2 Ne6 58.Kd3 Kg3–+) 57...Ne6 58.Kf5 Nd4 59.Kf6 (59.Kf4 Ne6 60.Kf5 d4 61.Ke6 d3–+) 59...Kg4 60.e6 Ne6! 61.Ke6 d4 62.Kd6 d3 63.Kc6 d2 64.Kb5 d1Q 65.Ka5 Kf5 66.c6 Ke6 (66...Ke6 67.c7 Qc1 68.Kb6 Kd6 69.c8R Qc8 70.a5 Qc6 71.Ka7 Kc7 72.a6 Qb6 73.Ka8 Qa6; 66...Ke6 67.c7 Qd7–+) 0–1. arbab (1925) – marekt (2210), gameknot.com, 2015.

5.d3 a5 A) 6.ba5 A1) 6...Ra5 7.Nf3 Nc6 8.g4 Bg6 9.Bg2 Nf6 10.Nh4=; A2) 6...Nd7 7.g4 Bg6 8.Bg2 Ra5 9.Nf3 Ngf6 10.Nh4=; A3) 6...Nf6 7.g4 Bg6 8.Bg2 Bc5 9.c4 c6 10.cd5=+; B) 6.Nd2 Nf6 7.b5 Bd6 8.c4 Bg6 9.g3 Nbd7 10.Bg2=.

5.d3 c5 6.bc5 Nf6 7.d4 Be7 8.e3 0-0 9.Nd2 b6 10.g4 Bg6 11.h4 bc5 12.h5 Be4 13.f3 Ng4 14.Qc1 cd4 15.fe4 de3 16.Nb3 Bh4 17.Ke2 de4 18.Bg2 f5 19.h6 Qc7 20.c4 Qg3–+ 21.Qf1 Nh6 22.Nf3 Nc6 23.Rh3? Qg4 24.Kd1 Rad8 25.Kc2 e2 26.Qe2 ef3 27.Rf3 e5! 28.Bh3 Qg6 29.Rd1 f4 30.Kc1 e4 31.Rff1 f3 32.Rd8 Rd8 33.Qc2 Ng4 (34.Rg1 f2–+) 0–1. Creatchy – michaelbuss, ChessWorld.net, 2005.

5.d3 c6 A) 6.Nf3 A1) 6...Nf6 7.Nbd2 Bg6 8.Ne5 a5 9.ba5 Qa5 10.Ng6=; A2) 6...Bg6 7.Ne5 a5 8.Ng6 hg6 9.c3 Nf6 10.Nd2=; A3) 6...a5 7.Nbd2 Nf6 8.e4 de4 9.Bf6 Qf6 10.de4=; B) 6.Nd2 Nf6 7.Ngf3 Bg6 8.Ne5 a5 9.Ng6 hg6 10.ba5=; C) 6.e3 a5 7.Nd2 Nf6 8.g4 Bg6 9.Ngf3 Bd6 10.ba5=+; D) 6.g4 Bg6 7.h4 h5 8.g5 a5 9.Nd2 Ne7 10.Ngf3=.

5.d3 Nd7 6.g4 Bg6 7.Bg2 c5 8.bc5 Nc5 9.Nf3 Rc8 10.h4 =.

5.d3 Nf6 A) 6.Nf3 c5 7.c3 Nbd7 8.Nh4 Bd6 9.Nf5 ef5 10.e3=; B) 6.g4 Bg6 7.Bg2 c5 8.Qd2 Nc6 9.b5 Nb8 10.c4=; C) 6.Nd2 Bd6 7.c4 Nc6 8.b5 Nb8 9.cd5 ed5 10.e4=.

5.Nf3 Nf6 6.Nh4 Bg6 7.Ng6 hg6 8.e3 c5 9.bc5 Bc5 10.d4 Bb6 11.c4 Ba5 12.Bc3 Ne4 13.Ba5 Qa5 14.Nd2 Nd7 15.Bd3 Ndf6 16.cd5 ed5 17.Qc2 a6 18.Ke2 0-0 19.Ne4 de4 20.Be4 Rac8 21.Qb1 Ne4 22.Qe4 Rfe8 23.Qb1 Qd5 (24.Kf1 Rc3=). Klaus Behrmann – rompepelotas, ChessWorld.net, 2004.

5.g4 Bg6 6.Bg2 h5 7.g5 (7.Nf3!?=) 7...Qg5–/+ 8.Kf1 (8.Nf3 Qe7–/+) 8...Qf5 9.d3 Nf6 10.Nd2 Nc6 11.Ngf3 a6 (11...0-0-0 12.Nh4 Qg5 13.Ndf3=) 12.c4 Be7 13.Qb3 Qf4 14.Bc1 0-0 (14...Qd6 15.Ke1–/+) 15.Ne4 Qf5 16.Ng3 dc4 17.Nf5 cb3 18.Ne7 Ne7 19.Bb2 a5 20.b5 (20.ba5!? Ra5 21.Rb1–/+) 20...a4–+ 21.Nd4 e5 22.Bb7 ed4 23.Ba8 Ra8 24.Bd4 Ne8 25.Kg2 Nd6 26.Rhc1 (26.b6 cb6 27.Bb6 Nd5–+) 26...Nd5 27.Bc5 b2 0–1. Microsoft – Fritz 11, 2013.

5.Nf3 Nf6 6.e3 a5 7.b5 Nbd7 8.Be2 Bd6 9.a4 (9.g4!? Bg6 10.g5=) 9...e5 10.Na3 (10.Nc3 0-0=+) 10...Qe7 11.c4 c6 12.d4 (12.0-0 Rb8=+) 12...e4 (12...Bb4 13.Kf1 e4 14.Ne5 Be2 15.Qe2=+) 13.Nd2= Bg6 (better 13...Be2!? 14.Qe2 Bb4=) 14.c5+= Bc7 15.b6 Bd8 16.Bc3 0-0 17.Nb3 Re8 18.Na5 (18.0-0 Qe6+/-) 18...Rb8 (18...Nc5!? 19.dc5 Qc5+=) 19.Nb3 Nf8 20.a5 Ne6 21.a6 ba6 22.Ba6 Bh5 23.Be2 Be2 24.Qe2 Nd7 (24...Ra8 25.Nc2 Ra1 26.Ba1+-) 25.Nc2 (25.0-0 Ra8 26.Nc2 Ra1 27.Ra1 Qf6+-) 25...f5 (25...Ndc5 26.Nc5 Nc5 27.dc5 Qc5 28.Kd2+/-) 26.g3 (26.Ra7 Bb6 27.cb6 Rb6+-) 26...Rf8 (better 26...Qf6!? 27.Bb4 Be7+/-) 27.Nb4 Rc8 (27...Qf6 28.Nc6 Rc8 29.Ne5 (29.Nd8?! Nec5 30.Nc5 Nc5+/-) 29...Ne5 30.de5+-) 28.Ra7 (28.Qa6 Bb6 29.cb6 Qd6+-) 28...Qe8 29.Na5 (better 29.b7!? Rc7 30.Na6 Qg6+-) 29...Nb6 30.cb6 Bb6 31.Ra6 Ba5 32.Ra5 c5 (32...Ng5+-) 33.dc5 Nc5 34.0-0 Nd3 (34...Nb7 35.Ra7 Rc3 36.Rb7+-) 35.Nd3 ed3 (35...Rc3 36.Nf4+-) 36.Qd3 Rf7 (36...Qe6 37.Qd4 Rc7 38.Rfa1+-) 37.Rd5 Re7 (37...h6 38.Rd1+-) 38.Rd1 Qf7 39.Rd8 Rd8 40.Qd8 Re8 41.Qd4 (41.Qd7 h6 42.Qf7 Kf7 43.Rd7 Re7 44.Re7 Ke7 45.Bg7 Kd7+-) 41...h6 42.Ra1 Kh7 43.Ra7 Re7 44.Re7 Qe7 45.Qe5 (45.g4 fg4 46.hg4 Qg5 47.Qg7 Qg7 48.Bg7 Kg8+-) 45...Qf7 (45...Qe5 46.Be5 g5 47.f3+-) 46.h4 (46.g4 fg4 47.hg4 Qd7 48.Qg7 Qg7 49.Bg7 Kg8+-) 46...Qg6 (46...h5 47.f3+-) 47.h5! Qf7 (47...Qh5 48.Qg7 Mate attack) 48.Kg2 Kg8 49.Qb8 (49.Qg7 Qg7 50.Bg7 Kg7+-) 49...Qf8 (49...Kh7 50.Qb2+-) 50.Qf8 Kf8 51.Kf3 Kf7 52.Kf4 g6 53.hg6 Kg6 54.Bd4 Kh5 55.Be5 (better 55.e4 Kg6 56.ef5 Kf7 57.Kg4+-) 55...Kg6 56.Bd6 h5 (56...Kf6 57.Be7! Ke6 58.Bf8+-) 57.Bf8 1-0. DiabloC_137 (2375) - universe64 (2395), lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2 e6 4.h3 Bh5)

5.Nf3 Nf6 6.e3 c5 7.bc5 Bc5 8.c4 0-0 9.cd5 ed5 10.Be2 Nc6 11.Nc3 Rc8 12.0-0 Ne4 13.d4 Bb6 14.Ne4 de4 15.Nd2 Be2 16.Qe2 Qd5 17.Rfc1 f5 18.Qc4 Ne7 19.Qb4 Qf7 20.a4 Nd5 21.Qb3 Bc7 22.Rc5 Rfd8 23.a5 Qd7 24.Nc4 Rb8 25.Rc1 b6 26.ab6 Bb6 27.Ne5 Bc5 28.Qb8 Bd6 29.Qb3 Be5 30.de5 a6 31.Rc5 Kh8 32.Qc4 Qe6 33.Rc6+/– Qe7 34.Rd6 Nc7 35.Qd4 Rc8 36.e6! 1–0. Benjap (2440) – michaelbuss (2745), ChessWorld.net, 2003.

5.g4 Bg6 6.e3 h5 7.Be2 hg4 8.Bg4 Nf6 9.Bf3 Nbd7 10.d4 Nb6 11.Nd2 Na4 12.Qc1 c6 13.Bd1 Ne4 14.Ne4 Be4 15.Bf3 Qh4 16.Ra2 Rh6 17.Be4 Qe4 (17...Nb2?! 18.Bd5 ed5 19.Rb2+= (19.Qb2? Qe4 20.f3 Qe3 21.Kf1 Re6–+)) 18.f3 Qh4 19.Ke2 Nb6 20.Qe1 Qg5 21.Qf2 Nc4 22.Bc3 Qf5 23.f4 a6 24.Qf3 b5 25.Qf2 Nd6 26.Qg2 Be7 27.Nf3 (27.Qg7?? Qh5 28.Nf3 Ne4–+) 27...Rg6 28.Qf1 a5! 29.Rg1 (29.ba5 Nc4 Double attack (29...Nc4 Decoy)) 29...Ne4 30.Qe1 Rg1 31.Ng1 Qh5 32.Kf1 Bh4 33.Qe2 Ng3 (33...Ng3 34.Ke1 Ne2 35.Kd2 Ng1–+) 0–1. Michas,John – Lund,Jens Dahlen (2150), ZH–2007–0-00146, 2007.

4.Qc1 Nbd7 (4...a5 5.e3–/+) 5.e3 (5.c4 c6–/+) 5...e5 6.c4 (6.d4 Bd6–/+) 6...c5 (6...a5 7.c5–/+) 7.bc5 (7.f3 Be6–/+) 7...Nc5 8.Qc2 d4 9.ed4 (9.h3 Bh5 10.ed4 ed4–/+) 9...ed4 10.d3 Bd6 11.Be2 0-0 12.Nf3 (12.Kf1 Re8–/+) 12...Re8 13.0-0 (13.Kf1 Ne6 14.h3 Nf4–+) 13...Qe7 14.Bd1 Bf5 15.Ne1?? (better is 15.Qd2 Bd3 16.Re1–+) 15…Qe1 (16.Qd2 Bh2 17.Kh2 Qf1 18.Bd4 Re1 19.Bf6 Qh1 20.Kg3 Rg1–+) 0–1. kostovist (1670) – pierre (2025), internet, 2006.

4.d3 Qd6 5.Nd2 e5 6.Ngf3 e4 (6...Nbd7 7.e4=+) 7.Be5 Qe7 8.de4 (8.Bf6 gf6 9.de4 de4=) 8...de4 9.Bf6 gf6 10.e3? (better 10.Nd4=) 10...ef3-+ 11.Nf3 Nc6 12.Bb5 Qd6 (12...Bd7 13.0-0-+) 13.Bc6? (better 13.Qd6 cd6 14.Nd4-/+) 13...Qc6-+ (13...bc6?! 14.c3-/+) 14.0-0 (14.c4 Qc4 15.Rc1 Qa6-+) 14...Bf3 (better 14...Rg8!? 15.Nd4 Bd1 16.Nc6-+) 15.Qf3 Qf3 16.gf3 Bd6 17.f4 Rg8 18.Kh1 0-0-0 19.Rg1 Rg1 20.Rg1 Rf8 (better 20...c5!? 21.c3 Bf8-+) 21.Rg7-/+ Kd7 22.Rh7 Ke6 23.h4 (23.c4 b6-/+) 23...Kf5 (better 23...a5 24.ba5 Ba3-/+) 24.Kh2?? (24.Rh6 a5 25.Rh5 Kg4 26.Ra5 Kf3-+ (26...Kh4?! 27.c4=+)) 24...Rg8 (better 24...Kg6-+) 25.Rf7=+ Kg4 (25...b5 26.c3-/+) 26.Rh7 (better 26.Kg2=) 26...Kf3-+ 27.h5? (better 27.c4 b6 28.c5 bc5 29.bc5 Bc5 30.Rc7-+) 27...Kf2 28.h6 (28.Rh6 Ke3 29.Rg6 Rh8-+) 28...Rg4 (better 28...Rg6 29.Kh3 Ke3 30.Rg7 Rh6 31.Kg4 Bf4 32.Kf5-+) 29.Kh3 Kf3?? (better 29...Rg1 30.c4 Ke3-+) 30.Rg7+= f5 31.Rg4?? (better 31.h7 Rg7 32.h8Q Rg3 33.Kh2 Rg2 34.Kh1 Rc2 35.Qh5 Ke3 36.Qf5+=) 31...fg4-+ 32.Kh2 g3 33.Kg1 g2 (33...Be7 34.h7 Bf6-+) 34.h7+- 1-0. alessandrocarvalhaes (1900) - H2KFebiven (2020), lichess.org, 2020.

4.d4 e6 5.Nd2 c6 6.c4 a5 7.c5 b6 8.f3 Bf5 9.e3 Be7 10.Ne2 Bd3 11.Ng3 Bf1 12.Rf1 ab4 13.ab4 Ra1 14.Ba1 0-0 15.Kf2 Nbd7 16.Qb3 Qc7 17.Rc1 Ra8 18.Bb2 Rb8 19.Qc2 Qb7 20.Rb1 Ra8 21.Ra1 Ra1 22.Ba1 Qa6 23.Bc3 Bd8 24.e4 de4 25.Nge4 Nd5 26.cb6 N7b6 27.Nd6 (better is 27.Nb3!?–/+) 27...Bh4–+ 28.g3 Be7 29.N2e4 Qa8 30.Bd2 f5 31.Bg5 Bf8 32.Nf5?! (32.Nc4 Qa1 33.Ned6 Qd4 34.Kf1 Nc4 35.Nc4–+) 32...ef5 33.Nc5 Qa1 34.Ne6 Qh1 (34...Bb4?! 35.Qc6 Qa2 36.Kg1–+; worse is 34...Nb4 35.Qf5 Bd6 36.Ng7 Qd4 37.Be3 Qb2 38.Kf1 Kg7 39.Qg5 Kf7 40.Qh5 Kg8 41.Qg5 Qg7 42.Qd8 Bf8 43.Bb6–+) 35.Qf5 Be7 36.f4?? (36.Qe5 Qh2 37.Kf1 Qh3 38.Kf2–+) 36...Qh2 37.Kf3 Nc4 0–1. Pal,Laszlo (1995) – Blair,David (2300), ICCF World Cup, 2000.

4.e3 Bd1 5.Kd1 e6 6.c4 dc4 7.Bc4 Bd6 8.d4 0-0 9.Nf3 Nbd7 10.Ke2 Nb6 11.h4 Nc4 0-1. James_Flynn (2095) - SpikeDerSpiegel (2190), Rated Bullet game, lichess.org.

4.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.a3).

4.Bf6 ef6 5.d4 Bd6 6.Nf3 0-0 7.e3 c6 8.Bd3 Nd7 9.0-0 Qc7 10.h3 Bh5 11.c4 dc4 12.Bc4 a5 13.b5 c5 14.Bd3 cd4 15.ed4 Bh2 16.Kh1 Bf4 17.Nbd2 Bd2 18.Qd2 Bf3 19.gf3 Rfd8 20.Rfd1 Nf8 21.d5 Qd6 22.Be4 Ng6 23.Bg6 hg6 24.Kg2 Re8 25.Re1 Re1 26.Re1 Qa3 27.d6 Qb4 28.Qb4 ab4 29.f4 Rd8 30.Rd1 b3 31.Kf3 b2 32.Rb1 Rd6 33.Rb2 Rd5 34.Ke4 Rh5 35.Kd4 b6 36.Kc4 Rh3 37.Rd2 g5 38.fg5 fg5 39.Rd6 Rf3 40.Rb6 Rf2 41.Rd6 g4 42.Rd3 Rb2 43.Kc5 f5 44.b6 f4 45.Rd4 f3 46.Rg4 f2 47.Rf4 g5 (48.Rf6 Kg7–+) 0–1. Woelfelschneider,Peter – Ganesan,Arasu, email 4AMM–F, 1998.

5.e3 e6 6.Nc3 Nbd7 7.Nge2 a5 8.b5 Bd6 9.Ng3 Bg6 10.f4 c5 11.bc6 bc6 12.Rb1 Qe7 13.Qc1 e5 14.f5 Bh5 15.e4 0-0 16.ed5 cd5 17.Nb5 Bc5 18.Nh5 Nh5 19.g3 Qf6 20.Bg2 Rab8 21.a4 Qf5 22.Rf1 Qg6 23.Bd5 Nb6 24.Bf3 Na4 25.Ba1 Nf6 26.Nc3 Nc3 27.Bc3 Ng4 28.Bg4 Qg4 0–1. marekt – Re_Ron, ChessWorld.net, 2003.

5.e3 e6 6.f4 Be7 7.Nf3 0-0 8.Be2 a5 9.b5 Ne4 10.0-0 a4 11.Nd4 Bf6 12.g4 Bg6 13.f5 ef5 14.gf5 Bd4 15.Bd4 Qg5 16.Bg4 Bh5 17.Rf4 c5 18.Bb2 Nd7 19.h4 Qh4 20.Bh5 Qg3 21.Kh1 Qh3 ½–½. Taulien,Hans_Juergen – Fichtner,Bernd (2140), 60yearsBdF–WS35, 2006.

5.g4 Bc8 6.h4 (6.e3!?=) 6...a5 7.b5 c5 8.e3 d4 9.Bc4 e5 10.e4 (10.Qe2!? Be7 11.ed4 ed4 12.c3=+) 10...Nbd7-/+ 11.d3 Nb6 12.Ba2 a4 13.Nd2 Bd6 14.Nc4 Nc4 15.Bc4 Be6 16.Be6 fe6 17.c4 dc3 18.Bc3 0-0 19.Qd2 h5 (19...Nd7 20.h5=+) 20.gh5 Nh5 21.Qg5 Exerts pressure on the isolated pawn (21.Qa2!?=) 21...Nf4=+ 22.Qd8 Rad8 23.0-0-0 c4 24.dc4 Ba3 25.Kc2 Rd1 26.Kd1 Bc5 (26...Rc8 27.Be5 Nd3 28.Bg3-/+) 27.Nh3=+ a3 28.Be5 (28.Ng5!?=) 28...Nd3=+ 29.Bc3 Rf3 30.Ke2?? (30.Kc2!? Be7 31.Ng1-/+) 30...Rg3 (30...Rh3 31.Rh3 Nf4 32.Kd2 Nh3 33.Kc2-+) 31.Ba1?? (31.Kd2 a2 32.Kc2 Be7-+) 31...a2 (better 31...Rh3 32.Rh3 Nf4 33.Kd2 Nh3-+) 32.Ng5-/+ e5 33.Ne6 Nf4 34.Kd2?? (better 34.Nf4 ef4 35.Rf1-+) 34...Ne6 35.Be5 Rg2 36.Kd3 Rg1 (36...Bg1!? 37.Ba1 Nc5 38.Kc3 Ne4 39.Kb3-+) 37.Rg1 Bg1 38.Kc2 Bd4 (better 38...Nc5 39.Ba1-+) 39.Bd4 Nd4 40.Kb2 Nb3! 41.Ka2 (41.Kb3 a1Q Combination) 41...Nd2 42.c5 Ne4 43.c6 bc6 44.bc6 Nd6 (better 44...Kf8!?-+) 45.Kb3 Kf7 46.Kb4 Ke7 47.Kc5 Ne8 (47...Nc8!? 48.Kd5-+) 48.Kd5 1-0. black_bishop_88 (2595) - gmcyborek (2645), lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2)

5.e4 de4=+ 6.Nc3 ef3 7.Nf3 Bf3 (7...a5 8.Be2-/+) 8.Qf3=+ c6 9.Bc4 Nbd7 10.Qe2 (10.Ne4 e6=+) 10...Qb6 11.Na4 Qc7 12.0-0? (12.Nc3 b5 13.Bd3 a5=+) 12...e6 (better 12...b5!? 13.Bf6 Nf6 14.Bb5 cb5 15.Qb5 Qd7 16.Qd7 Nd7-+) 13.Rae1 0-0-0 14.Kh1? (better 14.b5-/+) 14...Nb6?? (14...b5 15.Bb5 cb5 16.Qb5 Ng4-+ (16...Qc2 17.Rc1 Qc7 18.Qa6 Kb8 19.Rc7 Kc7 20.Rc1 Bc5 21.Nc5 Rc8 22.Bf6 gf6 23.Qa7 Kd6 24.Qd7 Ke5 25.Qd3 f5 26.Nd7 Kf4 27.Qe3 Kg4 28.Nf6 Kh4 29.Qg3)) 15.Nb6 Qb6 16.d3?? (better 16.Bf6 gf6 17.Rf6+-) 16...Be7= 17.Be5 h5 18.Bg3 (18.c3 h4=) 18...Bd6 (18...h4 19.Bf4=+) 19.Bd6 (better 19.Be6!? fe6 20.Qe6 Kc7 21.Rf6 gf6 22.Qe7 Kc8 23.Bd6=) 19...Rd6=+ 20.Qe5 Qd4 21.Qd4 (21.Qg3!? Rh7 22.Rf6=+) 21...Rd4-/+ 22.Re5 Ng4 23.Rg5 (better 23.Re2 b5 24.c3-/+) 23...g6?? (23...Ne3 24.Rf7 Nc4 25.Rgg7 Nd6 (25...Na3?! 26.Rc7 Kd8 27.Rb7=) 26.Rc7 Kb8-+) 24.Rf7+/- Rhd8? (better 24...Re8+/-) 25.Rg6?? (25.Be6 Kb8 26.Bg4 (26.Rg6?! Ne5 27.Rg3 Nf7 28.Bf7 h4=) 26...Rg4 27.Re5+-) 25...Rc4-+ 26.Rgg7? (better 26.h3 Ne5 27.Re6 Nf7 28.dc4-+) 26...Rc2 (better 26...Rd3! 27.Rg8 Rd8 28.Rd8 Kd8-+) 27.Rc7= Kb8 28.Rb7 Ka8 29.Ra7 Kb8 30.Rgb7 Kc8 31.Rc7 Kb8 32.Rab7 Ka8 33.Ra7 Kb8 34.Rcb7 Kc8 35.Rc7 Kb8 ½-½. black_bishop_88 (2475) - eltigrecu (2320), lichess.org, 2020. (=1.a3 d5 2.b4 Nf6 3.Bb2)

5.e4 de4=+ 6.Qe2 ef3 7.Nf3 c6 8.Nc3 Nbd7 9.g3 e6 10.Bg2 Bd6 11.0-0 Ne5 12.Ne4 (12.Ne5 Be2 Pinning (12...Be2 Deflection)) 12...Nf3 (12...Qb6!? 13.Kh1 Ne4 14.Qe4 Bg6=+) 13.Bf3= Bf3 14.Rf3 (14.Qf3!? Qb6 15.Kh1 Ne4 16.Qf7 Kd8 17.d3 Ng3 18.hg3+=) 14...Ne4-/+ 15.Qe4 Qb6 (better 15...0-0-/+) 16.Bd4+= 0-0-0?? (better 16...Qc7 17.Bg7 Rg8+/-) 17.Bb6+- ab6 18.Qe3 (better 18.Rf7 Rhe8+-) 18...f6 (18...Rhf8 19.Raf1 Rd7 20.Qb6+-) 19.Qb6 (better 19.Qe6 Kc7+-) 19...Be5 20.c3 Rd2 21.Re1 (21.b5!? Rb2 22.Qc5 Rb5+-) 21...Rhd8 22.Re5! fe5 23.Rf7 Rd1 24.Kg2 R1d7 (24...R1d2 25.Kf3 R2d7 26.Rd7 Rd7 27.Qc5+-) 25.Rd7 Rd7 26.a4 g5 (26...h6 27.a5 e4 28.a6 ba6 29.Qc6 Kd8 30.Qa6+-) 27.a5 (27.Qe3 g4+-) 27...e4 (27...Rd2 28.Kg1 h6 29.b5 cb5 30.Qe6 Kc7 31.Qh6 Rd1 32.Kf2+-) 28.a6 ba6 29.Qc6 Kd8 30.Qa6 Rd2 (30...Ke7 31.Qe2+-) 31.Kh3 e3 (31...Ke7 32.Qb7 Rd7 33.Qe4+-) 32.Qe6 e2 33.b5 (33.Qg8!? Kc7 34.Qh7 Kc6 35.Qg6 Kd7 36.Qf5 Kd6 37.Qc5 Kd7+-) 33...h5 (33...h6+-) 34.b6 g4 35.Kh4 e1Q 36.Qe1 Rh2 37.Kg5 h4 (37...Rb2 38.c4 Kd7 39.Qd1 Kc6 40.Qd5 Kb6 41.Qd4 Kc7 42.Qb2 Kd6 43.Qb6 Ke5 44.c5 Ke4 45.c6 h4 46.c7 h3 47.c8Q Kd3 48.Qf2 Ke4 49.Qcf5) 38.b7 (38.Kf6 Kd7 39.Qe6 Kd8 40.Qd6 Kc8 41.Qc7) 38...hg3 (38...Rb2 39.Qd1 Kc7 40.Qg4 Kb7 41.Qd7 Kb6 42.gh4 Rg2 43.Kf4 Rb2+-) 39.b8Q Kd7 40.Qee8 1-0. black_bishop_88 (2470) - eltigrecu (2325), lichess.org, 2020. (=1.a3 d5 2.b4 Nf6 3.Bb2)

5.g4 Bg6 6.h4 h5 7.g5 Nfd7 8.Nh3 e5 9.Nc3 (9.Bg2 a5=) 9...c6 10.e4 Nb6 (10...d4 11.Ne2=+) 11.ed5= cd5 12.Bb5 Nc6 13.Qe2 Bd6 (worse 13...Bc2 14.Rc1 Bb3 15.Qe5 Qe7 16.Qe7 Ke7 17.Nd1=) 14.Nf4 0-0 15.Ng6 fg6 16.0-0-0? (better 16.Na4=+) 16...Nd4-+ 17.Qd3 Rf3 (better 17...a6!? 18.Qg6 ab5 19.Qh5 Rf5-+ (19...Rf3?! 20.g6=)) 18.Qg6-/+ Rc3 19.dc3 (19.Bc3 Nb5 Remove defender; 19.dc3 Nb5 Remove defender) 19...Nb5 20.Qh5 e4 21.Rhf1 Qc7 Attacks the backward pawn on c3 22.Kb1 Bf4 23.g6 Bh6 24.Rd5 Nc3 (24...Qc4!? 25.Rfd1 Nd5 26.Qd5 Qd5 27.Rd5 Nc7-/+) 25.Bc3=+ Qc3 26.Rc5? (better 26.Rfd1 Rf8 27.Rd8=) 26...Qa3-+ 27.Qf5 Qb4 28.Ka2 Qa4 29.Kb1 Qe8 30.Re5 Qc8?? (30...Qd7 31.Qe4 Rc8 32.Qd3-/+) 31.Qf7=+ Kh8 32.Ref5 (32.Rh5 Qg8 33.Qf4+-) 32...Qg8-+ 33.Qb7 e3 34.Qa8 Na8 35.Rf8 Nb6 36.c3 (36.R1f7!?-/+) 36...e2 37.Rg8 Kg8 38.Re1 Nd5 39.Kc2 Nf4 40.h5 (40.c4 Kf8-+ (40...Ng6?! 41.Re2 Nh4 42.Re7-/+)) 40...Bg5 41.Ra1? (41.Kd2 a5 42.c4 a4-+ (42...Nh5?! 43.Ke2 Nf4 44.Kd1-/+)) 41...a5 (41...Ng2!? 42.Ra7 Kf8 43.Ra1-+) 42.Kd2? (better 42.Ra5 Kf8 43.Kd2-+) 42...Bh4 43.h6 (43.Rb1 e1Q 44.Re1 Be1 45.Ke1 Nh5-+) 43...e1Q 44.Re1 Be1 45.Ke1 gh6 46.Kd2 Ng6 47.Ke3 (47.c4 h5 48.c5 h4-+) 47...Nh4 (better 47...a4 48.Kd3 h5 49.Kc4-+) 48.Kd4 (48.c4-+) 48...Ng6 49.c4?? (49.Ke3 a4 50.Kd3-+) 49...Nf4 (better 49...h5!? 50.c5-+) 50.Kc5 (50.Ke3 a4 51.Kf4 a3-+) 50...Ne2 (better 50...Ne6 51.Kd5 Nc7 52.Kd6-+) 51.Kb5 (51.Kd5 Nc3 52.Kd4 h5 53.Kc3 h4-+) 51…Nd4 (51...Nd4 52.Ka5 h5-+) 0-1. TwelveTeen (2550) - liczner (2555), time forfeit, 2018.

6.d4 a5 (6...Bd6 7.Bd3=+) 7.b5 c6 8.c4 (8.Nc3 cb5 9.Nb5 a4=+) 8...dc4–/+ 9.Bc4 cb5 10.Bd3 b4 11.Nf3 ba3 (11...Nc6 12.0-0–/+) 12.Ba3=+ Ba3 13.Na3 0-0 (13...Bc6 14.0-0=+) 14.Qb1 (14.0-0 Na6=+) 14...Bc6 15.Ne5 (15.e4 Nh5 16.0-0 Nf4–/+) 15...Bg2–/+ 16.Rg1 Bd5 17.Nac4 Nc6 18.Nb6 Ra7 19.Qb5 (19.Nd5 ed5 (19...Qd5 20.Ng4 Nd7 21.Bh7 Kh8 22.Be4–/+) 20.Ng4 Kh8–+) 19...Nb4 20.Ke2 (20.Kf1 Bc6 21.Nc6 bc6–+) 20...Be4 (20...Bc6!? 21.Nc6 bc6 22.Qg5–+) 21.Bc4 Nbd5 22.Nd5 (22.Bd5 Nd5 (< 22...ed5 23.Nbd7–/+) 23.Nd5 Qd5 (23...ed5?! 24.Nd7–/+; 23...Bd5?! 24.Nd7=+) 24.Qd5 ed5–+) 22...ed5 (< 22...Bd5 23.Kf1–+) 23.Bd3 Bd3 (23...a4 24.Ra4 Ra4 25.Qa4–+) 24.Nd3 Re8 (24...a4 25.Ra4 Ne4 26.Rc1 Ra4 27.Qa4–+) 25.Rgc1 Re7 26.Nf4 h6 27.Rc5 b6 28.Rc6 Reb7 29.f3 Rb8 30.Kd2 Rc7 31.Rac1 Rbb7 32.Ke2 Qd7 33.Kf2 Rc6 34.Rc6 Rb8 35.h4 Rb7 36.h5 Rb8 37.Ke1 Qf5 38.Rb6 Rb6 39.Qb6 Nh5 40.Qd8 Kh7 41.Qd5 Qb1 42.Kf2 Nf4 43.ef4 a4 44.Qa5 Qb2 45.Kg3 Qd4 46.Qf5 g6 47.Qf7 Qg7 48.Qe6 a3 49.Kh3 Qb7 50.Kg2 Kg7 51.f5 gf5 52.Qf5 a2 53.Qe5 Kg8 54.Kh2 Qf7 55.Qb8 Kh7 56.Qe5 h5 57.Qe4 Kg8 58.Qe5 Qf3?? 59.Qe6 Qf7 60.Qc8 Kg7 61.Qc3 Qf6 62.Qc7 Kh6 63.Qc1 Qg5 64.Qc6 Qg6 65.Qc1= Kh7 66.Qc7 Kh8 67.Qb8 Qg8=+ 68.Qb2 Qg7 69.Qa2 h4 (69...Qe5 70.Kh3–/+) ½–½. Fahrudin87 (2070) – Kelish (2045), internet, 2006.

5.e3 a5 6.b5 e6 7.c4 Bc5 8.Nf3 0-0 9.d4 Be7 10.c5 Ne4 11.Nc3 Nd7 12.Bd3 Ndf6 13.g4 Nc3=+ 14.Bc3 Bd3 15.Qd3 Ne4 16.Nd2 Qd7 17.a4 f5 18.gf5 ef5 19.0-0-0?? Nf2–+ 20.Qe2 Nd1 21.Kd1 Rfe8 22.Nf3 Bf6 23.Qf2 Qe7 24.Kd2 Qe4 25.Re1 Re6 26.Qg3 Re7 27.Ng5 Bg5 28.Qg5 Rf7 29.Rg1 Qe6 30.Qf4 Re7 31.Rg5 g6 32.h4 h6 33.Rg3 Kg7 34.Ke2 Qf7 35.Bd2 Re4 36.Qf2 Rh4 37.Rg6 Qg6 38.Qh4 Qg4 39.Qg4 fg4 40.Kf2 Kf6 41.e4 de4 42.Bh6 Ke6 43.Bf4 c6 44.bc6 bc6 45.Kg3 Rd8 46.Be5 e3 47.Kg4 e2 48.Bg3 Rg8 49.Kf3 Rg3! 50.Ke2 Ra3 (51.Kf2 Kd5–+) 0–1. BigSky (2705) – duckbreath (2545), ICC, 1998.

5.e3 Bg6 6.Nf3 h6 7.d3 Bh7 8.Nbd2 e6 9.Be2 Be7 10.0-0 0-0 11.Rc1 c6 12.c4 Nbd7 13.cd5 cd5 14.d4 Nb6 15.Qb3 Ne4 16.Ne4 Be4 17.Nd2 Bf5 18.Bd3 Bd3 19.Qd3 Na4 20.Ba1 Bg5 (20...a5 21.b5=) 21.Qb3 Nb6 22.Bb2 Bf6 23.f4 Nd7 24.Nf3 Be7 25.Ne5 Nf6 26.Rc2 Ne4 27.Rfc1 Bf6 28.Nf3 Ng3 29.Kf2 Nf5 30.Rc7 Nd6 31.Rb7?? (better is 31.Ne5=) 31...Nb7–+ 32.Ne5 Be5 33.fe5 Qg5 0–1. Fournier,Frederic – sunay, Partie amicale, 1m + 0s, 2008.

5.Nf3 a5 6.b5 Nbd7 7.e3 e6 8.Nh4 Bg6 9.Be2 Bd6 10.0-0 Qe7 11.d3 0-0 12.Ng6 fg6 13.Nd2 c6 14.d4 e5 15.c4 ed4 16.ed4 Rae8 17.Bd3 Nh5 18.Nf3 Nf4 19.c5 Bc7 20.Bc1 Nd3 21.Qd3 Qe4 22.Rd1 Nf6 23.Be3 Rf7 24.a4 h6 25.Qe4 Ne4+= 26.Re1 Rfe7 27.b6 Bd8 28.Nd2 Rf7 29.f3 Nd2 30.Bd2 Re1 31.Re1 Rf8 32.Ba5 Bh4 33.Ra1 Re8 34.Kf1 Kf7 35.Bd2 Bf6 36.Bc3 Re3 37.Rc1 Re8 38.a5 Ra8 39.Ra1 Ra6 40.g3 g5 41.Re1 Be7 42.Re5 Ra8 43.Ke2 Ke8 44.f4 gf4 45.gf4 Kd7 46.f5 Rf8 47.Kd3 Ra8 48.Bd2 Bf6 49.Re6+- h5 50.Rd6 Kc8 51.h4! 1–0. Tihomir Glowatzky – marekt, ChessWorld.net, 2008.

5.Nf3 Nc6 6.e3 Qd6 7.Nc3 e5 8.Bb5 d4 9.Ne2 Qd5 10.c4 dc3 11.Nc3 Qd6 12.d4 0-0-0 13.Bc6 Qc6 14.b5 Qe6 15.g4 Ng4= 16.hg4 Bg4 17.Rg1 Bf3 18.Qf3+= ed4 19.Ne2 d3 20.Nd4+/– Qc4 21.Qd1 h5+= 22.Qd2 Re8 23.Rc1+/– Qa2 24.Qc3+- Bd6 25.Rg7 Be5 26.Rg5+- f5 27.Rf5 Rh7 28.Ra1 Bd4 29.Qd4 Qb3 30.Rd1 Rd7 31.Qc3 Qg8 32.Rf4 Red8 33.Qc5 d2 34.Ke2 Qb3 35.Rd4 Rd4 36.Bd4 Rd5 37.Qf8 Rd8 38.Qf5 Rd7 39.Qh5 Rd5 40.Qh3 Rd7 41.Qf5 Qa3 42.Ba7! Qb3 43.Rd2 Qc4 44.Kf3 Qf7 45.Qf7 Rf7 46.Ke4 b6 47.f4 Kb7 48.Ra2 Re7 49.Kf3 Rd7 50.e4 Rd3 51.Kg4 Rb3 52.e5 Rb5 53.e6 Rb4 54.Re2 Rb1 55.e7 Rg1 56.Kf3 (56...Rg8 57.f5+-) 1–0. Comet B50 – EXchess 3.11, 2006.

5.Nf3 Nc6 6.e3 Qd7 7.b5 Na5 8.Ne5 Qe6 9.g4 Be4 10.f3 Bg6 11.h4 h5 12.Ng6 fg6 13.gh5 gh5 14.Bh3 Qd6= 15.f4 e6 16.d3 Qb6 17.Qd2 Bc5 18.Qg2 Kf7 19.Bf6 Kf6 20.d4 Be7 21.Rg1 Bf8 22.Nd2 Rh6 23.Qg5 Kf7 24.f5 e5 25.f6! gf6? 26.Qg8 Ke7 27.Rg7! Bg7 28.Qg7 Ke8 29.Qh6 Qd6 30.Qh5 Ke7 31.Qh7 (31...Ke8 32.Bf5+-) 1–0. Crafty 19.19 – EXchess 3.11, 2006.

5.Nf3 Nc6 6.e3 Qd7 7.Bb5 Be4 8.Ne5+/– Qd6 9.d3 Bg2 10.Rh2 d4 11.ed4 a6 12.Ba4 Bd5 13.c4 Be6 14.c5 Qd5 15.Nd2 0-0-0 16.Bc6 bc6 17.Qa4 Kb7 18.Ndc4 Bd7 19.Na5 Kc8 20.Nac6 Bc6 21.Nc6 Qe6 22.Kf1 Kd7 23.Ne5 Kc8 24.c6 Kb8 25.Qa6 Qc8 26.Qb5 Ka8 27.Nf7 (27...Rd5 28.Qa4 Kb8 29.Nh8+-) 1–0. Fritz 9 – EXchess 3.11, 2006.

5.d3 Nbd7 6.Nd2 e6 7.g4 c5?? (7...Bg6 8.Ngf3=+) 8.Bg2?? (better 8.gh5 cb4 9.ab4 Bb4 10.c3+-) 8...Bg6=+ 9.c3 Rc8 10.Ngf3 Bd6 11.Nh4 0-0 12.Ng6 hg6 13.Nf1 e5 Black prepares the advance d4 (13...Qb6 14.Ne3-/+) 14.e4?? (better 14.g5 Nh5 15.Bd5+=) 14...d4-/+ 15.Qb3 cb4 16.cb4 Nb6 17.Ng3 Qd7 18.0-0 Na4 19.Rac1 Nb2 20.Qb2 Qa4 21.Rc8 Rc8 22.Rc1 Qd7 23.Ne2 Ne8 24.Rc8 Qc8 25.Qc1 Qd7 26.Qc2 Be7 27.Nc1 (27.f4!?=) 27...Bg5 28.Nb3 b6 29.Nd2 Nd6 30.Nc4 Qe6 31.a4 Nb7 32.Na3 Qe7 33.Qc4 a5 34.Nc2 ab4 35.Nb4 Nc5 36.a5? (better 36.Qb5=) 36...ba5-+ 37.Nc6 Qc7?? (better 37...Qd6 38.Na5 Qb6-+) 38.Qc5+- Kh7 39.Qd5 Bf6 40.Na5 Qc1 (40...Qc3 41.Bf1 Bh4+-) 41.Kh2 (better 41.Bf1+-) 41...Qf4 (better 41...Bg5 42.Qf7 Bf4 43.Qf4 ef4-+) 42.Kg1= Bh4?? (42...Qc1 43.Bf1 Kg8+-) 43.Bf1 (better 43.Qa2+-) 43...Qf2 44.Kh1 Qf1 (44...Bg3 45.Bg2 Qe1 46.Bf1 Qf1) 45.Kh2 Qf2 46.Kh1 Qf3 (46...Bg3 47.Qf7 Qh2) 47.Kh2 (47.Kg1 Bf2 48.Kf1 Bg3 49.Kg1 Qf2 50.Kh1 Qf1) 47...Bg3 48.Kg1 Qf2 (48...Qf2 49.Kh1 Qf1) 0-1. tryrush (2235) - Tinhau (2270), Rated Bullet game, lichess.org, 2015.

5.d3 Nbd7 6.g4 Bg6 7.Bg2 c6 8.e3 e5 9.Ne2 Bd6 10.Nd2 0-0 11.c4 (better 11.Ng3=+) 11...Re8 (11...Bd3 12.Qb3 dc4 13.Nc4 Bc4 14.Qc4-/+) 12.Nc3 (better 12.g5!? e4 13.gf6 ed3 14.Nd4 Nf6 15.0-0+=) 12...Bd3 13.c5? (better 13.cd5 cd5 14.Nb3=+) 13...Bc7-+ 14.Nb3 Bc4 15.Nd2 Ba6 16.Nb3 (16.g5 d4 17.gf6 dc3 18.Bc3 Nf6-+ (18...Qf6?! 19.Ne4 Qe6 20.Qc2-/+)) 16...e4 (16...d4 17.Ne2 Nd5 18.0-0-+) 17.f1? (better 17.b5 cb5 18.g5-+) 17...Bf1 18.Kf1 Ne5 19.Kg2 (19.Qe2 Nc4-+) 19...Nd3 20.Bc1 (20.Qe2 Nd7-+) 20...Qe7 (20...Nd7!? 21.f4 ef3 22.Qf3-+) 21.Nd4 Qe5 (21...a5 22.Bd2-+) 22.Nce2 h5 23.Bd2 (23.Nf4 hg4 24.Nd3 gh3 25.Rh3 Qg5 26.Kf1 ed3 27.Qd3-+) 23...hg4 24.hg4 (24.Qb3 Qg5 25.h4 Qg6-+) 24...Ng4 25.Nf4 (25.Be1 Qf6 26.Rh3 a5-+) 25...Ngf2 (better 25...Qg5 26.Kf1 Ndf2 27.Rh5 Ne3 28.Be3 Nd1 29.Rg5 Ne3 30.Ke2 Bf4 31.Rh5-+) 26.Qh5 Qh5 (26...Nh1 27.Rh1 Qh5 28.Nh5-+) 27.Rh5 (27.Nh5 Nh1 28.Rh1 Re5-+) 27...Nf4 (better 27...Bf4 28.ef4 e3 29.Be3 Re3 30.Nf5-+) 28.ef4 Nd3 (better 28...g6 29.Rh4 Bd8 30.Rh2-+) 29.Be3 (29.Rah1 f6 30.R1h4-+) 29...Bf4 30.Rh3 (30.Rah1 f6 31.Bf2 Be5-+) 30...Be3 31.Re3 Ne5 (better 31...a5!? 32.ba5 Ra5 33.Rb1 Nc5 34.Nf5-+) 32.Rh1 g6 33.Ree1 (33.Reh3 Kg7 34.Rh7 Kf6 35.Rf1 Kg5-+) 33...Kg7 34.Ne2 (34.Ref1 Rh8-+) 34...Rh8 35.Ng3 (35.Kg3 Nd3 36.Ref1 Rh1 37.Rh1 f5-+) 35...Rh1 36.Rh1 f5 (36...Nd3 37.Ne2-+) 37.Re1 (37.Ne2 Nd3-+) 37...Ng4 38.a4 Nf6 (38...f4 39.Nf1-+) 39.b5 (39.Ne2 Nd7 40.Rb1 Kf6-+) 39...Rd8 (39...f4 40.Nf1-+) 40.Rb1 Rd7 41.bc6 (41.Nf1 d4-+) 41...bc6 42.Rb8 (42.Nf1 d4-+) 42...d4 43.a5 (43.Ne2 d3 44.Nc3 Nd5-+) 43...d3 44.Nf1 (44.Rb1 d2 45.Rd1 Nd5-+) 44...d2 45.Nd2 Rd2 46.Kf1 Rd7 (46...e3 47.Rb7 Kh6 48.Re7 Ng4 49.Ke1 f4 50.Re4 Nf2 51.Re8 Nd3 52.Kf1 f3 53.Kg1 f2 54.Kg2 Nf4 55.Kf3 f1Q 56.Ke4 e2 57.Rh8 Kg5 58.Rh5 gh5 59.Ke3 e1Q) 47.a6 Kf7 48.Ke2 Ke6 49.Ke3 (49.Rc8 f4 50.Rc6 Kf5-+) 49...Nd5 50.Kd4 (50.Kf2 f4 51.Rc8 Kf5-+) 50...f4 (better 50...e3 51.Rb1-+) 51.Ke4 g5 52.Re8 Kf7 53.Ra8 (53.Rb8 g4 54.Kf5 f3 55.Kg4 f2-+) 53...Nf6 54.Kf5 Ke7 (54...Rd5) 55.Kg5-+ Nd5 (better 55...f3 56.Rh8 Rd1-+) 56.Kf5 (56.Kg4-+) 56...f3 57.Rh8 f2 58.Rh1 Ne3 59.Kf4 f1Q 60.Rf1 Nf1 61.Kf3 Rd5 62.Kf4 Rc5 63.Kf3 Ra5 64.Kf4 Ra6 65.Ke4 Ra5 66.Kd3 Rd5 67.Kc3 Rd6 68.Kb3 Kd7 69.Kc3 Ke6 70.Kb3 Kd5 71.Kc3 (71.Kb2 Kc4 72.Ka2 Rd2 73.Kb1 c5 74.Kc1 Kb3 75.Kb1 Rd1) 71...c5 72.Kb3 (72.Kd3 c4 73.Kc2 Rb6 74.Kd1 c3 75.Ke2 c2 76.Kf1 c1Q 77.Kg2 Rg6 78.Kf3 Qe1 79.Kf4 Qe4) 72...c4 73.Kc3 (73.Kb2 Rb6 74.Kc1 Kd4 75.Kc2 Ng3 76.Kd1 Kd3 77.Kc1 c3 78.Kd1 Rb1) 73...Rc6 74.Kc2 (74.Kb2 c3 75.Kc2 Ke4 76.Kc1 Ne3 77.Kb1 Ra6 78.Kc1 Ra1) 74...Rb6 (74...c3 75.Kc1 Ne3 76.Kb1 Ra6 77.Kc1 Ra1) 75.Kc3 (75.Kd1 c3 76.Ke2 c2 77.Kf1 c1Q 78.Ke2 Rb3 79.Kf2 Qd2 80.Kf1 Rb1) 75...Rb3 76.Kc2 Kc5 (76...Kc5 77.Kd1 Ng3 78.Kc2 Kd4 79.Kd2 Rb2 80.Kd1 a5 81.Kc1 Kc3 82.Kd1 Rb1; 76...Kd4 77.Kd1 Ke3 78.Kc2 Nd2 79.Kc1 Kd3 80.Kd1 Rb1) 0-1. Unicornz (2235) - Superboy (2215), Rated Bullet game, lichess.org, 2015. (=1.a3 A00: Irregular Openings 1...d5 2.b4 Bg4 3.Bb2 Nf6)

5.d3 Bg6 6.Nf3 c6 7.Ne5 Nbd7 8.Ng6 hg6 9.e3 e6 10.Be2 Bd6 11.Nd2 Qc7 12.c4 g5 13.c5 Be7 14.e4 de4 15.de4 Ne5 16.Qc2 0-0-0 17.0-0-0 Ng6 18.f3 (18.g3 Ne5=) 18...Nf4?? (18...Qg3 19.Bf1-/+) 19.Bf1 (19.Nc4 A) 19...Ng2?? 20.Be5 Ne3 21.Qb3 (21.Bc7?! Rd1 22.Rd1 Nc2+-) 21...Rd1 22.Rd1 Nd1 23.Bc7 Kc7 24.Bd1+-; B) 19...Ne2 20.Qe2 Qf4 21.Kb1+/-; C) 19...Rd1 20.Rd1 Nd7 (20...Ng2 21.Be5+-) 21.Nd6 Kb8+-) 19...Rd7 (better 19...N6h5!? 20.Nc4 f6=+) 20.Nc4+= Rhd8 21.Ne5?? (better 21.Re1 Rd4 22.e5 Rc4 23.Bc4+-) 21...Rd1-+ 22.Qd1 Rd1 23.Kd1 Nd7 (23...N6h5 24.g4 Ng3 25.Rg1 Nf1 26.Rf1-+) 24.Nc4 (24.Nf7 Ng2! 25.e5 Nf4-+) 24...b6 25.Kc1 (25.cb6 ab6 26.Kc2 b5-+) 25...bc5 26.bc5 (26.Bg7 cb4 27.ab4 Nh5-+) 26...Nc5 27.e5 (27.Bg7 Qb8-+) 27...Ncd3 (27...Qb8!? 28.Nd2-+) 28.Bd3 Nd3 29.Kc2 Nb2 30.Nb2 (30.Kb2 Qd7 31.Rc1 Qd4 32.Kb3 Kc7-+) 30...Qe5 31.Re1 Qe1 (31...Qe1 32.Na4 Qe2 33.Kb3 Qd3 34.Kb2 Qd2 35.Ka1 Bf6 36.Kb1 Qd1 37.Ka2 Qc2 38.Nb2 Qb2) 0-1. akutikof (2015) - Berthe (2380), Rated Bullet game, lichess.org, 2016. (=1.a3 A00: Irregular Openings 1...d5 2.b4 Bg4 3.Bb2 Nf6)

5.Nf3 e6 6.e3 c5 7.bc5 Bc5 8.Bb5 Nc6 9.g4 Bg6 10.g5 Nh5 11.Ne5 a6 12.Nc6 Qb6 13.Nd4 (13.Ne5 Qb5 14.Ra2 0-0=+) 13...ab5=+ 14.Nf3 0-0 (14...b4 15.Ne5=+) 15.Ne5= d4 16.Qf3 Qd6 17.Ng6 fg6 18.Qg2 (< 18.Qb7 Rad8 19.d3 de3 20.fe3 Qg3 21.Kd1 Rd5–+) 18…Rf5 (19.c3 de3 20.fe3 Ng3–+) 0–1. JurgBehrmann (1725) – pierre (2105), internet, 2006.

5.Nf3 e6 6.e3 c6 7.Be2 Bd6 8.Ne5 Be2 9.Qe2 Be5 10.Be5 Nbd7 11.Bb2 Qc7 12.d4 0-0-0 13.Nd2 h5 14.c4 dc4 15.Nc4 g5 16.Rc1 g4 17.h4 g3 18.f4 Ne4 19.b5 f6 20.bc6 bc6 21.Qc2 Nf2 22.Rf1 e5 (22...Nf8+=) 23.d5?? (better is 23.de5 Nc5 24.Ke2+/–) 23...ef4 24.dc6 Nb8?? (better is 24...Nc5!? 25.Qf5 Kb8=) 25.Bf6 (better is 25.Qf5 Nd7 26.cd7 Kb8 27.Bf6 Qd7 28.Rb1 Ka8 29.Qd7 Rd7 30.Bh8+-) 25...Rde8?? (25...Nd3 26.Ke2 Rhf8 27.Bd8 Nc1 28.Rc1 f3 29.gf3 Qc6 30.Nb6 ab6+-) 26.Qf5+- Nd7 27.Qd7 (better is 27.cd7 Kb8 28.Rb1 Qb6 29.Qf4 Kb7 30.Qf3 Ka6 31.Nb6 (31.de8B?! Qb1 32.Kd2 Qd3 33.Ke1 Qb1 34.Ke2 Qd3 35.Ke1 Qb1=) 31...ab6 32.Bh8+-) 27...Qd7 28.cd7 Kd7 29.Bh8 Rh8 (29...Nd3 30.Ke2 Nc1 31.Rc1 Rh8 32.Ne5 Ke6 33.Ng6+-) 30.Rf2 (better is 30.Ne5 Ke6 31.Ng6 Nd3 32.Kd2 Nc1 33.Nh8 Nb3 34.Kc3 Nc5 35.Rf4 Nb7+-) 30...gf2 31.Kf2 fe3 32.Ne3 Rf8 33.Kg1 Rf4 34.Rd1 (better is 34.Rc7! Kc7 35.Nd5 Kd6 36.Nf4 Ke5 37.Nh5 Kf5+-) 34...Ke6 35.Re1 Rh4 36.Nc4 Kf6 37.Nd6 Ra4 38.Re3 Rg4 39.Ne4 Kf5 40.Nd6 Kf6 41.Rf3 Kg6 42.Nb5 a6 43.Nc7 a5 44.Ne6 a4 (44...Re4 45.Nf4 Kh6 46.Kf2+-) 45.Nf4 (45.Rf4!? Rf4 46.Nf4 Kh6+-) 45...Kg5 46.Nh3 Kg6 47.Nf2 Rd4 48.Ne4?? (48.Nd3 Kg5+-) 48...Rd1?? (better is 48...Re4 49.g3 Kg5=) 49.Kh2 (49.Kf2!? Rb1+-) 49...Rd4 50.Nc5 Rh4 51.Kg3 Rc4 52.Kf2 (better is 52.Nd7 Re4 53.Kh3+-) 52...Rc2 53.Kg1 Rc5 54.Rg3 Kh6 55.Kh2 Rc2 56.Rc3?? Rc3–+ 0–1. Fournier,Frederic (1670) – Denker, ChessOK.com, 2013.

5.Nf3 Bf3 6.gf3 Nbd7 7.f4 e6 8.e3 Bb4?? (better 8...a5 9.b5 Bd6=) 9.ab4+- 0-0 10.c4 (10.Rg1 c6+-) 10...Re8 (10...dc4 11.Qf3+-) 11.cd5 (11.Qf3 c6+-) 11...e5 (11...Nd5 12.b5+-) 12.Qf3 ef4 13.Qf4 Re4 (13...Nd5 14.Qd4 Ne5 15.Kd1+-) 14.Qg5 Rb4 15.Rg1 g6 16.Bc3 Rb6 17.Bd4 1-0. unrulyqueen (2295) - bumblingbishop (2185), gameknot.com, 2020.

5.Nf3 Bf3 6.gf3 Nbd7 7.f4 e6 8.e3 c6 9.c4 a5 10.b5 Be7 11.bc6 bc6 12.d3 (12.Nc3 Rb8 13.Rb1 Nb6 14.cd5 A) worse 14...Nfd5 15.Nd5 Qd5 A1) 16.Bg7?! Rg8 (worse 16...Qh1 17.Bh8 Ba3 18.Qc2+/-; worse 16...Ba3 17.Bh8 Qh1 18.Qc2+/-) 17.Be5 Rd8=; A2) 16.Rg1+/-; B) 14...cd5 15.Bb5 Nbd7=) 12...Rb8 13.Ra2 0-0 14.Nd2 Re8 15.Bg2 Nc5 16.Qc2 a4 ½-½. unrulyqueen (2345) - bumblingbishop (2250), gameknot.com, 2021.

5.g3 Nbd7 6.Bg2 c6 7.Nf3 Qc7 (7...Bf3 8.Bf3 e5 9.Nc3=+) 8.d3 e5 9.0-0 a5 10.Qd2 Bf3 11.ef3 (11.Bf3 ab4 12.ab4 Ra1 13.Ba1 Qd6=+) 11...Bd6 12.c4 0-0 13.c5 Be7 14.d4 ed4 15.Re1 Rfe8 16.Bd4 b6 17.cb6 Nb6 18.ba5 (18.Bf1 Nbd7=+) 18...Nc4 19.Qd3 (19.Qd1 c5 (< 19...Ra5 20.Bf6 gf6 21.Bf1=) 20.Bc3 d4=+) 19...c5 (19...Qa5 20.Bc3 Qb5 21.Qc2=+) 20.Bc3 Na5 21.Ra2 (21.f4 Nc6=+) 21...c4 (21...d4 22.Ba5 Qa5 23.Nd2=+) 22.Qd1= Rad8 (22...Bc5 23.Re8 Re8 24.Kh2=) 23.Rd2 Nb3 24.Bf6 Bf6 25.Rd5 Re1 26.Qe1 Rc8 27.Nc3 Kf8 28.Rb5 (28.Nb5 Qe7 29.Qd1 c3=) 28...Qd7 29.a4 Qd2 30.Qd2 Nd2 31.Na2 c3 32.f4 (32.Nc1 Ra8=+) 32...c2–/+ 33.Kh2 (33.Nc1 Be7=+) 33...Bd4 (33...c1Q 34.Nc1 Rc1 35.Bd5–/+) 34.Bd5 (34.Rb7!?=+) 34...Nb1–/+ 35.Nc1 Nc3 (35...Bf2?! 36.Rb7 Rc5 37.Rf7 (< 37.Bf7 Be3–/+) 37...Ke8 38.Rf5=+ (38.Rg7 Rd5 39.Rh7 Be3 40.Rh8 Kf7 41.Rh7 Kg6–+)) 36.Rb4 Bf2 (36...Bc5!? 37.Rc4 Nd5–/+) 37.Bb3=+ Be3 (38.Rb7 Rd8 (38...Bc1 39.Rf7 Ke8 40.Rg7–/+) 39.Rf7 Ke8–/+; 37...f5 38.Rb7=) 0–1. marekt – Bagpuss, ChessWorld.net, 2004.

6.d3 a5 7.b5 b6 (7...e6 8.Bg2=+) 8.e3 h6 9.Nd2 (9.Bf6 gf6 10.Bg2 Ra7+=) 9...e6= 10.Bg2 Bd6 11.Ne2 0-0 (11...c6 12.e4 de4 13.de4+=) 12.0-0 (12.Nc4 Nbd7 13.Nd6 cd6+=) 12...Nbd7 (12...c6 13.e4 de4 14.de4=) 13.f4 Re8 (13...Bc5 14.Nd4+=) 14.Nf3 Bc5 15.Qd2 e5 (15...a4 16.Ned4+=) 16.f5 (better 16.fe5!? h5 17.gh5 Nh5 18.Nc3+-) 16...Bh7= 17.d4 ed4 18.Ned4 (worse 18.Nfd4 Ne5 19.Bc1 Ne4-/+) 18...Ne4 19.Qd3 Ne5?? (better 19...Qe7=) 20.Ne5+- Re5 21.Nc6 Be3 (21...Nf2 22.Rf2 Re3 23.Nd8 Rd3 24.cd3 Bf2 25.Kf2 Rd8+-) 22.Qe3 Re8 (22...Rf5 23.Nd8 Rf1 24.Rf1 Rd8+-) 23.Qd4 (23.Nd8 Rad8 24.Rad1 Rc8+-) 23...f6 (23...Qg5 24.Rae1 Ng3 25.Bd5 Ne2 26.Re2 Re2+-) 24.Nd8 Rad8 25.Rad1 (better 25.Rae1 Kf8 26.Bc1 h5+-) 25...Rd7 (25...Ng3 26.Bd5 Kf8 27.Qc4 Nf1 28.Qc7 Rd5 29.Rd5 Bf5 30.Bf6 gf6 31.Rf5+-) 26.Be4 Rde7 27.Qd5 Kh8 28.Rfe1 Bg8 29.Bf6! Bd5 (29...gf6 30.Qc6 Decoy) 30.Bg7! Kg7 (30...Rg7 31.Rd5 Zwischenzug; 30...Kg7 31.Rd5 Zwischenzug (31.f6 Passed pawn)) 31.Bd5 (better 31.f6 Kf6 32.Rf1 (32.Bd5? Re1 33.Re1 Re1 34.Kf2 Ra1-+; 32.Rd5?! Re4 33.Rf1 Kg6+/-) 32...Kg7 33.Bd5+- (33.Rd5?! Re4 34.Rd7 R8e7 35.Re7 Re7+/-)) 31...Re1=+ 32.Re1 Re1 33.Kf2 Rc1 (33...Ra1=+) 34.f6?? (34.Bb3 Kf6=) 34...Kf8?? (34...Kf6 35.Bb3-/+) 35.g5 (better 35.Bb3+=) 35...Ke8?? (35...Rc2 36.Kf3 hg5 37.a4-+) 36.Ke3 (better 36.gh6 Rc2 37.Kg3 Rc3 38.Bf3+-) 36...Kf8?? (better 36...hg5 37.a4 Rc2-+) 37.g6+- (37.gh6 Rg1 38.Kf4 Rg6+-) 37...Ke8 (37...Rg1 38.g7 Rg7 39.fg7 Kg7+-) 38.g7 (38.g7 Re1 39.Kf2 Kd7 40.Ke1 Kd6 41.g8Q c6 42.Qe6 Kc5 43.Bb3 Kd4 44.Ke2 cb5 45.Qe3) 1-0. Zugswong (2550) - universe64 (2425), lichess.org, 2019. (=1.a3 d5 2.b4 Bg4 3.Bb2 Nf6 4.h3 Bh5)

6.d3 c5 7.bc5 e6 8.Nd2 (8.d4 b6=) 8...Bc5+= 9.Nb3 Bd6 10.g5 Nh5 11.h4 f5 12.gf6 White gets the initiative 12...Nf6 13.Nd4 e5 14.Ne6 Qb6 15.Rb1 (15.Ng7? Kf7 16.Rb1 Kg7–+) 15...Qa5 16.Qd2 Qd2 17.Kd2 Kf7 18.Bh3 Nc6 19.Nf3 Rhe8 20.Rbg1 Re7 21.h5 Nh5 22.Neg5 Kg8 23.Nh4 Nf4 24.Bg4 h6 25.Ng6 Ng6 26.Be6 Re6 27.Ne6 Kf7 28.f4 ef4 29.Ng7 Ba3 30.Ba3 (worse is 30.Rh6 Bb2 31.Rhg6 Bd4+=) 30...Kg7 31.Rh4 Kh7 32.Rh5 d4 33.Rb5 (33.Rgh1 b5 34.Rh6 Kg7 35.Rh7 Kf6+/–) 33...b6+= 34.Rf5 Rg8 35.Bb2 Nce7 36.Rf6 Rf8 37.Bd4 Rf6 38.Bf6 Nd5 (38...Nc6 39.Ra1+/–) 39.Bd8+- Nb4 40.c4 Nc6 (40...Kg7 41.Bc7+-) 41.Bf6 h5 42.d4 Nce7 43.Kd3 (43.Kd3 h4 44.Be7 Ne7 45.Ke4+-) 1–0. Woelfelschneider,Peter – Maier, 2009.

6.Bg2 c6 7.d3 Nbd7 8.Nd2 e5 9.Ngf3 Bd6 10.Nh4 Qe7 (10...a5 11.b5=) 11.Ng6 hg6 12.e4 (12.c4 d4=) 12...0-0 (12...d4 13.c3=) 13.ed5 cd5 (13...Nd5 14.Qf3=) 14.0-0 (14.g5 Nh7+=) 14...a5= 15.ba5 Rfc8 (15...Ra5!? 16.Re1 Re8=) 16.Re1 d4?? (16...Ra5 17.f4 Rb5+/-) 17.Bd4! Ra5 (17...ed4 18.Re7 Pinning (18.Re7 Deflection)) 18.Nc4 Raa8 (18...Ra4 19.Bb7 (19.Nd6?! Qd6 20.Bb2 b6+/-) 19...Rc7 20.Bg2+- (20.Nd6?! Qd6 21.c4 Ra3=+)) 19.Bb7 Nc5? (19...Rc4 20.dc4 Ra3 21.Ra3 Ba3+-) 20.Ba8 Ra8 21.Bc5 Bc5 22.Re5 (22.d4 Ba7 23.Ne5 Qd6+-) 22...Qc7 23.Rb1 (23.c3 Nd7 24.Qf3 Ne5 25.Qa8 Kh7 26.Ne5 Qe5+-) 23...Bd4 24.Qf3 Rd8 (24...Ra3 25.Qb7 Qb7 26.Rb7 Ra1 27.Kg2 Be5 28.Ne5+-) 25.Reb5 Nh7 (25...Qe7 26.Rb7 Qe8 27.g5+-) 26.Rb7 Qc5 (26...Ng5 27.Rc7 Nf3 28.Kg2+-) 27.Qf7 Kh8 28.Rd7 (28.R1b5 Qf8+-) 28...Rg8 (28...Rf8 29.Qd5 Ng5 30.Kh1 Rf2 31.Rd8 (31.Qd4 Qd4 32.Nd6 Qe5 33.Nf7 Nf7 34.Rb8 Qb8 35.Rd8 Nd8 36.c4 Qb1) 31...Kh7 32.Qg8 (32.Qd4 Qd4 33.Rd4 Nf3 34.c3 Rh2) 32...Kh6 33.Rd5+-) 29.Rbb7 (29.Rd5 Rf8 30.Rc5 Rf7 31.Rc8 Rf8 32.Rf8 Nf8+-) 29...Ng5 (29...Rf8 30.Qg6 Rf2 31.Qd6+-) 30.Qg6 Nh3 31.Kf1 (31.Kf1 Rf8 32.Rf7+-) 1-0. black_bishop_88 (2545) - thatsroughbuddyy (2455), lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2)

6.Bg2 e6 7.Nf3 Bd6 8.e3 Nbd7 9.0-0 Qe7 10.d3 0-0-0 11.Nbd2 Ne8 12.c4 f5 (better is 12...Bd3 13.c5 Bc5 14.bc5 Bf1 15.Bf1 Nc5+=) 13.c5 Be5? (better is 13...fg4 14.cd6 Nd6+/–) 14.Ne5+- Ne5 15.Be5 fg4 16.hg4 Qg5? (better is 16...Bd3 17.Re1 Rf8+-) 17.Bf4 Qf6 18.d4 h5 19.g5 Qf7 20.Bh3 (20.c6 h4+-) 20...Bf5 21.Qf3 g6 (21...Qg6 22.Rfc1+-) 22.a4 Ng7 (22...Bh3 23.Qh3 h4 24.Nf3+-) 23.b5 h4 24.c6 b6 (24...Bh3 25.cb7 Kb7 26.Qh3+-) 25.a5 Nh5 (25...Bh3 26.ab6 cb6 27.Qh3+-) 26.Be5 Bh3 (26...Ng7 27.ab6 cb6+-) 27.Qf7 Rdf8 (27...Rd7 28.Qd7 Kb8 29.Qc7 Ka8 30.Qb7) 28.Qc7 1–0. Fournier,Frederic (1795) – misschess (1745), Active (5/0), 2005.

6.g5 Ne4 7.h4 h6 8.d3 Nd6 9.Bg2 hg5 10.hg5 Rh1 11.Bh1 c6 12.Nd2 e6 13.Ngf3 Nd7 14.c4 a5 15.c5 Nf5 (15...Nb5 16.e4=) 16.e4+= de4 (16...Ne7!?+=) 17.de4+/- Ne7 18.Nc4 White plans e5 18...Nc8 19.e5 (19.Nfe5 ab4 20.ab4 Ne5 21.Qd8 Kd8 22.0-0-0 Ke8 23.Ne5 Bh5+/-) 19...Be7 20.Nd6 (20.Nh4 ab4 21.ab4 Ra1 A) 22.Qa1?! Bd3 (22...Bg5? 23.Ng6 fg6 24.Qa2+-) 23.Nd6 Nd6 24.ed6 Bg5=; B) 22.Ba1+/-) 20...Kf8?? (20...Nd6 21.ed6 Bg5 22.Bg7 Bf6 23.Bf6 Qf6-+) 21.Qd4 (21.Nb7 Qc7 22.Nd6 ab4 23.ab4 Ra1 24.Qa1 Qb8+-) 21...b6 (21...Qc7 22.Nh4 Bh5 23.Qe4+/-) 22.Nd2 (22.Nh4!? Bh5 23.Bc6 bc5+-) 22...ab4 (22...bc5 23.bc5 Na7 24.N2c4+/-) 23.ab4 (23.Bc6!? ba3 24.Nb7 (24.Ba8?! ab2 25.Ra3 bc5=) 24...Bc5 25.Qd7 Qd7 26.Bd7+-) 23...Ra1+= 24.Ba1 bc5 25.bc5 Na7 26.Bc3 Qc7 (26...Bg5 27.N2c4=) 27.N2c4 (27.Be4 Be4 28.N2e4 Qb8+/-) 27...Nb5+= 28.Nb5 cb5 Increasing the pressure on the isolated pawn on c5 29.Nd6 (better 29.c6!? b4 30.Qd7 Qd7 31.cd7 bc3 32.f4=) 29...Qc5-/+ 30.Qc5 Nc5 31.Bb4?? (better 31.Nb5 Bg5 32.Na7-/+) 31...Nd3-+ 32.Ke2 (32.Kd2 Nb4 33.f4 Bd6 34.ed6 Nd3-+) 32...Nb4 33.f4 (33.Ke3 Nc2 34.Kf4 b4-+) 33...Bd6 34.ed6 Ke8 35.Bc6 (35.Bf3-+) 35…Nc6 0-1. black_bishop_88 (2545) - alekskooks (2475), Ukrainian Bullet League, lichess.org, 2020. (=1.a3 d5 2.b4 Bg4 3.Bb2)

6.Be2 Bd6 7.0-0. vidyashankarh (2055) – laurensjulia (1800), net–chess.com, 2003.

6.Be2 Bd6 7.c4 Ne7 (7...Ngf6 8.cd5 e4 9.Ng1 Ne5 10.f3 Bf5=; 7...dc4 8.Na3 Qe7 9.h3 Bf3 10.Bf3 Nb6=) 8.cd5 Nd5 9.Nc3 Nc3 10.dc3 Qe7 =.

6.Be2 Bd6 7.d4 cd4 (7...e4 8.dc5 Bf8 9.c6 bc6 10.bc6 Ndf6+=; 7...Bf3 8.Bf3 cd4 9.ed4 e4 10.Be2 Ngf6=+) 8.Nd4 Be2 9.Ne2 Ngf6 10.0-0 0-0 =+.

6.Be2 e4 7.Nd4 Be2 8.Ne2 Ngf6 9.d3 a6 10.de4 de4 =.

6.Be2 e4 7.Ne5 Be2 (7...Ne5 8.Be5 Be2 9.Qe2 Qg5 10.Bg3 Nf6=+) 8.Qe2 Ne5 9.Be5 Qg5 10.Bg3 Be7 =+.

7.0-0 Bd6 (7...Ngf6 8.h3 Bh5 9.Nc3 e4 10.Nh4 Be2=; 7...e4 8.Nh4 Be2 9.Qe2 Ngf6 10.Nf5 h5=; 7...Rd8 8.h3 Bf3 9.Bf3 Ngf6 10.Nc3 e4=) 8.h3 Bh5 9.Nc3 Ne7 10.Ng5 Be2 =+.

7.Nc3 Ngf6 (7...e4 8.Nh4 Be6 9.f4 Ndf6 10.0-0 d4=+) 8.h3 Be6 9.0-0 d4 10.Nb1 Bd6 =+.

7.c4 e4 8.Ng1 Be2 9.Qe2 Ngf6 10.Bf6 Nf6 =+.

7.d3 a6 (7...Bd6 8.h3 Bf5 9.Nbd2 Qa5 10.c4 dc4=; 7...Be7 8.Nbd2 Ngf6 9.c4 0-0 10.cd5 Nd5=; 7...Ngf6 8.c4 dc4 9.dc4 Bd6 10.Nc3 0-0=+) 8.ba6 Ra6 9.e4 Ngf6 10.ed5 Nd5 =+.

7.h3 Bf3 (7...Be6 8.0-0 Ngf6 9.c4 dc4 10.Qc2 a6=; 7...Bf5 8.0-0 e4 9.Nh4 Be6 10.f4 ef3=; 7...Bh5 8.Nc3 e4 9.Ng1 Be2 10.Nge2 Ngf6=) 8.Bf3 Ngf6 9.0-0 Bd6 10.Nc3 e4 =.

7.Qf3 e4 8.Qd1 Ngf6 9.d3 Qa5 10.Bc3 Qc7 11.Nd2 =.

7.Qf3 e4 8.Qf4 Ngf6 9.Be2 Qb6 (9...Qb8 10.Qb8 Rb8 11.d3=) 10.Nc3 0-0-0= 11.0-0 =.

7.Qf3 e4 8.Qf5 Ne7 9.Qh5 Qa5 10.c4 Nb6 11.cd5 =.

7.Qf3 e4 8.Qg3 Ngf6 9.Be2 Qb8 10.Qb8 Rb8 11.d3 =.

7.Qf3 Ngf6= 8.c4 (8.Nc3 Nb6 9.a4 e4 10.Qg3 Qd6 11.Qd6=; 8.Be2 Bd6 9.Qg3 0-0 10.0-0 Qa5 11.Qh4=+) 8...e4 9.Qf4 dc4 10.Bc4 Be7= 11.f3 =.

4.a4 e6 5.Nf3 f5 6.e3 Ngf6 7.Be2 Bd6 8.0-0 0-0 9.d4 Ne4 10.Nbd2 Bh5 11.Ne5 Be2 12.Qe2 Ndf6 13.c4 Nd2 14.Qd2 Be5 15.de5 Ne4 16.Qc2 dc4 17.Rfd1 (17.Qc4 Re8 18.Rad1+/-) 17...Qe8 (better 17...Qh4!?+=) 18.Qc4 Qf7 (18...c6 19.f3 cb5 20.ab5+/-) 19.Rac1 (19.f3 Ng5 20.h4 Nf3 21.gf3 a6+-) 19...Rac8 (better 19...b6+-) 20.Rd4?? (20.f3 Ng5 21.h4 Nf3 22.gf3 Qg6 23.Kf2 Qh6+-) 20...Rfd8? (20...Qe8!?+=) 21.Rcd1 (better 21.f3!? Ng5 22.h4 Nf3 23.gf3 Rd4 24.Qd4+-) 21...Rd4+= 22.Qd4 h6 (22...c5 23.bc6! Rc6 24.Qa7+/-) 23.h4 (23.f3 Ng5 24.Qa7 c5+-) 23...g5 (23...c5!? 24.Qc4 b6+=) 24.f3 Ng3 25.Kf2 f4 26.hg5 hg5 27.ef4 Qf4? (27...gf4 28.Bc1 (28.Qa7?! Qh7 29.Qa5 Qh4=) 28...Nh5 29.Qa7+/-) 28.Qf4 (better 28.Qd7 Ne4 29.Kg1 Qe3 30.Kh1 Nf2 31.Kh2 Nd1 32.Qc8 Kg7 33.Qd7 Kf8 34.Qd8 Kg7 35.Qd1 Qf4 36.Kg1+-) 28...gf4 29.Bc1 Nh5 30.Rd7 (better 30.Rh1!? Ng7 31.Bf4+-) 30...c6+= 31.bc6 Rc6 32.Bd2 Rb6 33.a5 (33.Ke2 a6+/-) 33...Rb2 34.Ke1 a6 (34...Rb1!? 35.Ke2 Ng3 36.Kd3 Nf1+=) 35.Re7+/- Ng3 36.Bf4 (36.Re6? Rb1 37.Bc1 Rc1 38.Kd2 Rc5-+) 36...Ne2 (36...Re2!? 37.Kd1 Rg2 38.Bg3 Rg3+/-) 37.Bd2 Nd4 38.Re6?? (better 38.Bc3 Nc6 39.Bb2 Ne7 40.g4+-) 38...Ne6-+ 39.f4 Nd4 (better 39...Nc5 40.g4 Ra2-+) 40.f5 (40.Bc3 Re2 41.Kd1-+) 40...Nf5 41.g4 Nd4 42.Bc3 Rg2 (better 42...Re2 43.Kf1 Re4-+) 43.Bd4 Rg4 44.Bb6 (44.Bc3 Rg2-+) 44...Re4 45.Kd2 Re5 46.Kd3 (46.Bc7 Rb5 47.Kd3-+) 46...Rb5 47.Bc7 Kf7 48.Kd4 Ke6 49.Bd8 (49.Kc4 Kd7 50.Bg3 Ra5-+) 49...Kd7 (49...Rd5 50.Kc3 Rd8 51.Kc4-+) 50.Bh4 (50.Bf6 Ra5 51.Bg7 Ra4 52.Kd5 Rg4-+) 50...Kc6 (better 50...Rb4 51.Kc5 Rh4-+) 51.Be1 Rb3 (51...Rb1 52.Bf2-+) 52.Kc4 Rb5 53.Bd2?? (53.Kd4 Rb1 54.Bc3-+) 53...b6 (53...Rc5!? 54.Kb4-+) 54.ab6 Kb6 55.Be3 Kc6 56.Bd2 Rg5 (56...a5 57.Be1-+) 57.Kd4?? (better 57.Bg5 Kd6 58.Bf4 Ke6 59.Bd6=) 57...Rg4 58.Ke3 Kb5 59.Be1 (59.Kf3 Rc4 60.Ke2 a5-+) 59...Rg8 (59...a5 60.Kd3-+) 60.Kf3 (60.Kd4 Rg1 61.Bf2 Rg2-+) 60...Re8 61.Bd2 a5 62.Bf4 (62.Bc1 a4 63.Bb2 Kb4-+) 62...a4 (better 62...Rf8 63.Kg3 Rf4 64.Kf4-+) 63.Bd6 a3 64.Ba3 Ka4 65.Bd6 Kb3 66.Bf4 Kc4 67.Kg4 Rf8 68.Bg3 Rg8 69.Kf3 Rg3 (69...Kd5 70.Bf4=+) 70.Kg3= ½-½. BeepBeepImAJeep (2770) - Gan1 (2430), lichess.org, 2019.

4.c4 dc4 5.Qc2 (5.Na3 Nb6=) 5...Be6 (5...Ngf6 6.e3=+) 6.Na3= Nb6 (6...Ngf6 7.Nc4 a6 8.ba6 Ra6 9.e4=) 7.e3 Can c4 get defended? (7.e4 Nf6=) 7...Qd5=+ 8.Rc1 (8.e4 Qc5=+) 8...Rd8 (8...Bf5 9.Qc3 Bd3 10.Nf3–/+) 9.Nf3 (better 9.e4 Qd6 10.Nf3=) 9...Qd6 (better 9...c3 10.Bc3 Bf5=) 10.Nc4+- Qd5 (10...Nc4 11.Bc4 f6 12.Be6 Qe6 13.a4+-) 11.a4 (11.e4!? Qc5 12.Na5 Qc2 13.Rc2+-) 11...Nf6 (11...Bf5 12.Nb6 cb6 13.d3+-) 12.Be2 (12.Nb6 cb6 13.Bc4 Qc4 14.Qc4 Bc4 15.Rc4 Nd5+-) 12...g6 (12...Bf5 13.Nb6 cb6 14.Qc4+=) 13.0-0 (13.e4 Qc5+-) 13...Nc4 (13...Bf5!? 14.Qd1 Be4+-) 14.Bc4+- Qc4 15.Qc4 Bc4 16.Rc4 Rc8 (16...c6 17.bc6 bc6 18.Rc6+-) 17.Rfc1 c6 (17...Kd8 18.Be5 c5 19.bc6 bc6 20.Rc6 Rc6 21.Rc6+-) 18.bc6 Rc6? (18...bc6 19.Bf6 ef6 20.Rc6+-) 19.Rc6 (better 19.Ne5 Bg7 20.Nc6 bc6 21.Rc6 0-0+-) 19...bc6 20.Rc6 (20.Bf6 ef6 21.Rc6 Be7+-) 20...Bg7 21.Ra6 0-0 (21...0-0 22.Bf6 Bf6 23.Ra7 e5+-). Sie – Cpu, AI Factory's Chess, 2016.

4.c4 c6 5.cd5 cd5 6.Qa4 (6.h3 Bh5=) 6...Bh5 (6...Ngf6 7.h3 Bf5 8.Nf3=+) 7.g4 Bg6 8.h4 (8.Nc3 e5 9.Bg2 Ngf6–/+) 8...h6 (8...Nb6 9.Qb3=+) 9.h5 (9.Nf3 Ngf6=+) 9...Bh7 10.Nf3 e6 (10...Ngf6 11.d3=+) 11.Bg2 (11.d3 Ngf6=+) 11...Be4 (11...Ngf6 12.d3=+) 12.0-0 (12.d3 Bf3 13.Bf3 Ngf6=) 12...Bf3 13.Bf3 Ngf6 14.Qf4 (better 14.Rc1=+) 14...e5?? (better 14...Rc8=+) 15.Be5+- Be7 (15...Ne5!? 16.Qe5 Qe7+-) 16.Bc7+- Qc8 17.Nc3 Nb6 18.Bb6 ab6 19.Nd5 Qd7?? (better 19...Nd5 20.Bd5 0-0+-) 20.Nc7 Kf8 21.Na8 Bd6 (21...Qd8 22.Bb7 Bd6 23.Qf3+-) 22.Qa4 Bb8 (22...Qd8 23.Bb7 g6 24.Rac1+-) 23.Nb6 (23.Rfc1 g6 24.hg6 Kg7 25.gf7 Qd6+-) 23...Qd6 24.Rfc1 g6 25.Nc8 Qh2 26.Kf1 gh5 27.gh5 Rg8 (27...Be5 28.Rab1 Kg7 29.Bb7+-) 28.Qb4 Ke8 (28...Kg7 29.Ne7 Re8 30.Nf5 Kh7+-) 29.Qe7 1–0. DEFFM – maychian, freechess.org, 2019.

4.d4 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Qa8 8.Nc3 Qa5 (8...Ngf6 9.f3 Bf5 10.Bb2–/+) 9.h3 (9.f3 Bf5–/+) 9...Bh5–/+ 10.g4 Bg6 11.Bb2 e6 12.e3 (12.Nf3 Ngf6 13.Qa1 Qa1 14.Ba1 Bb4–+) 12...Bb4 13.Nge2 (13.Qa1 Qa1 14.Ba1 Bc2–+) 13...Ngf6 14.Bg2 Ne4 (14...Nb6 15.0-0 Nc4 16.Qa1–/+) 15.Be4 Be4 16.0-0 Bg6 17.Qd2 h5?? (better 17...Nb6 18.Ra1 Qb5–/+) 18.Ra1+- Bc3 (18...Qa1 19.Ba1 hg4 20.hg4+-) 19.Nc3 (19.Nc3 Qa1 20.Ba1 hg4 21.hg4+-; 19.Ra5?! Bd2 20.Ra8 Ke7 21.Rh8 hg4 22.Ba3 Kf6 23.hg4 Bc2+-; worse 19.Bc3 Qb5 20.Ra8 Ke7 21.Rh8 Qb1 22.Kh2 Be4+-) 1–0. DEFFM – GuestCCGQ, freechess.org, 2019.

4.Nf3 e5 5.a4 e4 6.Nd4 Ngf6 7.h3 Bh5 8.g4 Bg6 9.h4? (9.a5 Ne5=+) 9...Bc5 (better 9...Ng4!? 10.e3 Nde5-+) 10.h5 Ng4 11.hg6?? (better 11.e3 Bd4 12.Bd4-/+) 11...Qf6-+ 12.f3 Bd4 13.Bd4 Qd4 14.fg4 Qa1 15.Nc3 Qd1 16.Nd1 (16.Kd1 c6 17.gf7 Kf7-+) 16...fg6 17.Ne3 c6 18.bc6 bc6 19.d3 Ke7 (better 19...ed3!? 20.ed3 0-0 21.d4-+) 20.de4 d4 21.Bg2 (21.Nc4 Rab8 22.e3 Rb1 23.Ke2 de3-+) 21...Ke6 (better 21...de3 22.Rh3 Ne5 23.Re3 Ng4-+) 22.Nc4 Ne5 23.Ne5 Ke5 24.e3 Raf8 25.ed4 Kd4 26.Ke2 Ke5 27.Rd1 (27.Bf3 Rf4 28.Rh3 Rhf8-+) 27...Rd8 (better 27...Rf4!? 28.g5-+) 28.Rf1 Rhf8 29.Re1 (29.Rh1 h6-+) 29...Rf4 30.Bf3 Rd4 31.Rh1 Rc4 32.Kd3 Rd4 (32...Ra4!? 33.Rh3-+) 33.Ke2 Rf3! 34.Re1?? (34.Kf3 h6 Combination) 34…Re4 (34...Re4 35.Kf3 Re1-+) 0-1. BitChess (2340) - genodesis (2405), Rated Bullet game, lichess.org, 2016.

4.Nf3 Ngf6 5.e3 e6 6.c4 dc4 7.Bc4 Bd6 8.d4 Qe7 (8...0-0 9.0-0=+) 9.Nbd2= 0-0-0 (9...0-0 10.0-0=) 10.0-0 e5 (10...Kb8 11.Rc1+=) 11.Qa4 Kb8 (11...Nb6 12.Qc2 Nc4 13.Nc4+=) 12.de5+= Ne5 13.Ne5 (13.Bd4 c5 14.bc6 Nc6+/-) 13...Be5= 14.Be5 Qe5 (worse 14...Rd2 15.Bd4 b6 16.Rfc1+/-) 15.Nb3 Bc8 (15...Qg5 16.Kh1= (worse 16.Bf7 Bh3 17.g3 Rhf8-/+)) 16.Bf7 (16.Nd4 Ng4 17.Nf3 Qe4+=) 16...Ng4 17.g3 h5 (17...Rhf8 18.b6 cb6 19.Rac1-+) 18.b6 (18.Rac1 h4 19.b6 ab6=+) 18...ab6 (18...cb6 19.Rac1=) 19.Nd4+= h4? (better 19...Bd7 20.Qc4 h4=) 20.Nb5+- Be6?? (better 20...Bf5 21.Qa7 Kc8+-) 21.Qa7 Kc8 22.Rfd1 (22.Be6!? Qe6 23.Rad1 Rd5 24.Qa8 Kd7 25.Rd5 Qd5 26.Qh8 Qb5 27.Qg7 Ke8 28.Qg4 Qc6+-) 22...Rd1 23.Rd1 Bd5 24.Qa8 Kd7 25.Rd5 (25.Qh8 Ne3 26.f4+- (26.fe3?! Qe3 27.Kf1 Qf3 28.Ke1 Qe3 29.Kf1 Qf3 30.Ke1 Qe3 31.Kf1=)) 25...Qd5+= 26.Nc7?? (26.Bd5!? Ra8 27.Be6 Ke7 28.Bg4+/-) 26...hg3 (26...Qd1 27.Kg2 h3) 27.Nd5?? (27.Qa4 Qc6 28.Qg4 Kc7 29.Qg3 Qd6=) 27...gf2 (better 27...gh2 28.Kf1 h1Q 29.Ke2 Ra8 30.Nb6 Ke7 31.Na8 Kf7-+) 28.Kg2 Rh2?? (better 28...Ra8 29.Nb6 Ke7 30.Na8 Kf7=) 29.Kf1 (better 29.Kg3 f1N 30.Kg4 Ne3 31.Ne3 Rg2 32.Ng2 Kc7 33.Nf4 Kc6 34.Qc8 Kd6 35.Nd5 Ke5 36.Qc3 Ke4 37.Qe3) 29...Rh1 30.Ke2 f1Q 31.Kd2 Rh2 (31...Qc1 32.Kd3 Qb1 33.Kc4 Ne5 34.Kd4 Nc6 35.Kc4 Rc1 36.Nc3 Qe4 37.Kb3 Qb4) 32.Kc3 Qc4 (32...Qa1 33.Kd3 Qb1 34.Kc4 Ne5 35.Kd4 Nc6 36.Kc4 Qe4 37.Kb3 Qc2 38.Ka3 Qa2) 33.Kc4+- Ne3 34.Kd4 (34.Ne3 b5 35.Kd3 Rh3 36.Qb7 Kd6 37.Qb6 Ke7 38.Qe6 Kd8 39.Qh3 Kc7 40.Nd5 Kb7 41.Qd7 Ka6 42.Qc7 b4 43.Qb6) 34...Rd2 35.Ke5 (35.Ke3 Rd5 36.Qb7 Kd6 37.Qd5 Ke7 38.Qe6 Kd8 39.Be8 Kc7 40.Qf7 Kb8 41.Bc6 Kc8 42.Qd7 Kb8 43.Qb7) 35...Rd5 (35...Nc4 36.Kf4 Nd6 37.Nb6 Kc6 38.Qa4 Kb6 39.Qb4 Kc7 40.Qc3 Nc4 41.Bc4 Rf2 42.Ke4+-) 36.Kf4 (better 36.Bd5 Nd5 37.Kd5 Kc7+-) 36...Ng4 (36...Rf5 37.Ke3 Rf7 38.Qb7 Ke8 39.Qb6 Re7 40.Kd4 Rd7 41.Kc5 Rf7+-) 37.Kg3 (better 37.Qb7 Kd8 38.Qb6 Kd7 39.Qb7 Kd6 40.Qd5 Kc7 41.Qc5 Kd7 42.Kg4 g6 43.a4 g5 44.a5 Kd8 45.Qd6 Kc8 46.Be6 Kb7 47.Qb6 Ka8 48.Bd5) 37...Rf5 (37...Nf6 38.Qb7 Kd6 39.Qb6 Ke5 40.Bd5 Kd5+-) 38.Qd8 (38.Qd8 Kd8 39.Be6-+) 1-0. ClayPigeons (2090) - batalelkom (2290), Rated Bullet game, lichess.org, 2019.

4.h3 Bh5 5.Nf3 Bf3 6.ef3 Ngf6 7.Be2 e6 8.0-0 Bd6 9.c4 0-0 10.Bf6? (better 10.Re1!?=+) 10...Qf6-+ (worse 10...gf6 11.cd5 Nb6 12.de6 fe6 13.d4+=; 10...Nf6?! 11.Nc3-/+) 11.cd5?? (better 11.d4 Bc5! 12.dc5 Qa1 13.cd5 Qa2 14.c6 bc6 15.dc6-/+) 11...Qa1 12.de6 fe6 13.Qb3 (13.Nc3 Qb2-+) 13...Qf6 (better 13...Qe5 14.f4 Qe2-+) 14.Bc4 Rae8 15.Nc3 (15.Re1 Ne5-+) 15...Nb6 (better 15...Nc5 16.Qb4 Qe5 17.f4 Rf4 18.g3-+) 16.Ne4 Qe5 17.Ng3 (17.Nd6 cd6 18.d4 Qf6-+) 17...Nc4 18.Qc4 Qd5 (18...Rf4 19.Qe2 Rb4 20.Qe5 Be5 21.a4-+) 19.Qa4 (19.d3 Rf4 20.Ne4 Qe5-+) 19...Rf6 (19...Qd2 20.Qa7 Qd5 21.Qe3-+) 20.Qa7 (20.Ne4 Rf5-+) 20...Rg6 (20...b6 21.Qa4 Ra8 22.Qd1 Bg3 23.fg3 Ra2 24.Qc1-+) 21.Ne4 Rf8 22.Qe3 b6 (22...Qb5 23.Re1-+) 23.Kh1 (23.a4 Bf4 24.Qa3 Ra8-+) 23...Qe5 (23...Qb5 24.Re1-+) 24.g3 (24.Nd6 Qd6 25.Rc1 Rd8-+) 24...Ra8 (24...Qb5 25.Kg2-+) 25.Qb3 (25.Nc3 Qe3 26.de3 Ra3-+) 25...Qd5 (25...Qh5 26.Kg2 Ra3 27.Qc4 Qf3 28.Kh2-+) 26.Qe3 (26.Qd5 ed5 27.Nc3 d4-+) 26...Qa2 (26...Qb5 27.Kg2-+) 27.h4 (27.Nc3 Qc4 28.Rc1 Ra3-+) 27...Qc4 28.h5 (28.Rb1-+) 28...Qf1 29.Kh2 Rh6 (29...Ra1 30.Nf6 Kh8 31.Qe1 Qe1 32.hg6 Qh1) 30.f4 Ra1 (30...Rh5) 31.g4 (31.Nf6 Kh8 32.Qe4 gf6 33.g4 Bf4 34.Qf4 Qh1 35.Kg3 Rg1) 31...Qe1 (31...Qh1 32.Kg3 Rg1) 32.Qf3 (32.Qe1 Bf4 33.Kg2 Re1-+) 32...Qg1 (better 32...Bf4 33.Kh3 Ra3 34.Kg2 Rf3 35.Kf3-+) 33.Kh3 Qh1 (better 33...Qf1 34.Kh4 Ra3-+) 34.Kg3 (34.Qh1 Rh1 35.Kg3 Rg1 36.Kf3 Rb1-+) 34...Qf3 (34...Rg1 35.Qg2 Qg2 36.Kh4 Qg4) 35.Kf3-+ Rf6! 36.Nf6 gf6 37.g5 (37.d4 Ra5 38.Ke2 Bf4-+) 37...Rb1 38.gf6 (38.f5 ef5 39.g6 hg6 40.hg6 Kg7-+) 38...Rb5 39.Kg4 h6 40.d4 Kf7 41.f3 Kf6 42.f5 ef5 43.Kh4 (43.Kh3 Rb2 44.f4 Bf4 45.d5 Rh2) 0-1. Antares_Sco (1830) - gigi1856 (2225), Hourly Blitz Arena, lichess.org, 2017.

4.c4 dc4 5.h3 Bf5 6.Nc3=+.

4.c4 c6 5.Qa4 (5.h3 Bh5 6.cd5 cd5=+ (worse 6...Qd5 7.Nc3 Qd6 8.Nf3+=)) 5...Qd7 (5...Nf6!? 6.Nf3 Bd6=+) 6.Nc3 Ne7 (6...d4!? 7.Ne4 Nf6 8.Nf6 gf6+=) 7.cd5+- Nd5?? (better 7...ed5 8.h3 Be6+-) 8.Qg4+- Nc3 9.dc3 cb5 10.Rd1 (10.Nf3 f5 11.Qh3 Qd5+-) 10...Qc6 (10...Qc7 11.Nf3+-) 11.Nf3 Nd7 12.Nd4 Qc5 (12...Ne5 13.Qg3 Qc5+-) 13.Ne6! fe6 14.Qe6 Qe7 15.Qh3 (15.Qf5 0-0-0 16.Qb5 Nc5 17.Rd8 Kd8+-) 15...0-0-0 16.e3 a6 (16...Qc5 17.Be2 Bd6 18.0-0+-) 17.Be2 Kb8 (17...Qe4 18.Bg4 Qc6 19.0-0+-) 18.Qg3 Qe5?? (18...Kc8+-) 19.Qe5 Ne5 20.Rd8 (20.Rd8 Kc7 21.Re8+-) 1–0. DEFFM – GuestLVHW, freechess.org, 2019.

4.c4 Nd7 5.cd5 ed5 6.h3 (6.Nf3 Ngf6=+) 6...Bh5 (6...Bf5 7.Nf3=+) 7.Qc2 (7.Nf3 Ngf6=+) 7...Nc5 (7...Bg6 8.d3=+) 8.e3 Bg6 (8...Nf6 9.Be2=+) 9.d3 h5 (9...a6 10.ba6 Na6 11.Bc3=+) 10.Nf3= Bf5 (10...a6 11.ba6 Ra6 12.Be2=) 11.Be2 (11.Nd4 Nh6+=) 11...a5 (11...a6 12.Nc3+=) 12.a4 (12.Nd4 Bg6+-) 12...Rh6 (12...Nf6 13.Nd4 Bg6 14.0-0+=) 13.Nd4 (13.0-0 Bd6+-) 13...Bd7 (better 13...Qg5 14.Nf5 Qf5+=) 14.0-0 (14.Bf3 Nf6+-) 14...Qg5 (better 14...Bh3!? 15.Bf3 Qg5=+) 15.Nf3+- Qg6 (15...Qf5 16.Nbd2+-) 16.Nh4 (16.Ne5!? Qg5 17.Nd7 Kd7 18.Nd2+-) 16...Qg5+= 17.Nf3 (17.d4 Qh4 18.dc5=) 17...Qg6+- 18.Ne5 Qf5 19.Nd7 Kd7 20.Nd2 Ke8 (20...Nf6 21.Rfe1+-) 21.e4 Qg5 (21...de4 22.Ne4 Re6 23.Ng3+-) 22.Nf3 (22.ed5 Bd6+-) 22...Qg6 (22...Qd8 23.ed5 Qd5 24.Rae1+-) 23.ed5 Be7 (23...Bd6 24.Rae1 Ne7 25.Ne5+-) 24.Ne5 (24.Bd4 b6+-) 24...Qf5 25.Bf3 Rf6 (25...Bd6 26.Be4 Ne4 27.de4+-) 26.Be4 Qg5 (26...Qc8 27.Bh7 Kf8 28.d4+-) 27.Nf3 Qh6 28.Bf6 Nf6 29.Rfe1 Nfe4 (29...Qf4 30.Nd4+-) 30.de4 (30.Re4?! Ne4 31.de4 Qd6+-) 30...Qg6 (30...Qd6 31.Rad1 Qg6 32.Nh4 Bh4 33.Qc5+-) 31.Rad1 Rb8 (31...Kf8 32.Nh4! Qg5 33.Nf5+-) 32.Re3 (32.Ne5 Qg5 33.Nc4 Nd7+-) 32...Rd8 (32...Qb6 33.e5 Rd8 34.Qh7+-) 33.Nd4 (33.Ne5 Qh7+-) 33...Qg5 (33...Qb6 34.Nf5 Bf8 35.Rc3+-) 34.Nf5 (34.Rc3 b6+-) 34...b6 (34...g6 35.Ne7 Qe7 36.e5+-) 35.e5 (35.Rg3!? Qf4 36.Rg7 Bf6+-) 35...g6 36.Ne7 Ke7 37.d6 cd6 38.ed6 Kf8 39.Rf3 (better 39.Qc3 Kg8 40.d7+-) 39...Ke8 (39...Kg8 40.Qc4 Rd7 41.Qd4+-) 40.Re1 (better 40.Qc3 Kd7 41.Rf7 Kc8+-) 40...Kf8 41.Qe2 (better 41.Re7 Qd5 42.Qg6 Qd1 43.Kh2 Qd6 44.Qd6 Rd6 45.Rff7 Kg8 46.Rg7 Kh8 47.Rh7 Kg8 48.Reg7 Kf8 49.Ra7+-) 41...Rd7 (41...Kg8+-) 42.Qe8 Kg7 43.Re7 Qc1 (43...Qf6 44.Rf6 Re7 45.Qe7 Nd7 46.Rf7 Kg8 47.Qe8 Nf8 48.Qf8) 44.Kh2 Kh6 (44...Qg1 45.Kg1 Re7 46.Qe7 Nb3 47.Rf7 Kh6 48.Rh7) 45.Rd7 (45.Qh8 Kg5 46.Rg3 Kh4 47.Rg4) 45...Nd7+- 46.Qd7 1–0. Sie – Cpu, AI Factory's Chess, 2016.

4.h3 Bf5 5.e3 h5 (5...Ne7 6.Nf3=) 6.Nf3 c6 (6...Nf6 7.Be2=) 7.a4 (7.Be2 Nf6=) 7...c5 (7...Nf6 8.Be2=) 8.c4 (8.Be2 Nf6=) 8...Nd7 (8...Nf6 9.Be2=) 9.Be2 Ngf6 10.0-0 Be7 (10...dc4 11.Na3=) 11.d4 (11.a5 0-0+=) 11...0-0 (11...dc4 12.Na3=) 12.Nbd2 dc4 13.Bc4 (13.Nc4 Rc8+=) 13...Nb6 14.Ba2 (14.Be2 Rc8+=) 14...Bd3 (14...a6 15.dc5 Bc5 16.Bb1 Bb1 17.Rb1+=) 15.Re1+= cd4 (15...Rc8 16.Ne5 Bh7 17.a5=) 16.Bd4 Nbd7 (16...Rc8 17.Bb1 Bb1 18.Rb1+=) 17.Qb3 (17.Rc1 a6 18.Qb3 Bg6+=) 17...Nc5 18.Qd1 (18.Bc5 Bc5 19.Rad1 Bf5+=) 18...Rc8 (18...Ncd7 19.Rc1+=) 19.Ne5 Re8 (19...a6 20.Bc4 Bc4 21.Ndc4+=) 20.Ndf3 (20.Rc1 Bf5+=) 20...Bf5 21.Rc1 (21.a5 Bd6+= (21...Qa5? 22.Be6 Qe1 23.Qe1 Ne6 24.Ra7+-)) 21...Qa5= 22.Bb3 (22.Ng5 Na4 23.e4 Rc1 24.Qc1 Bh7 25.Nef7 Ba3 26.Nh6 gh6 27.Be6 Re6 28.Qc8 Kg7 29.Ne6 Kg6+-) 22...Nfe4 (22...Red8=) 23.g4 (23.Bc5 Nc5 (worse 23...Rc5 24.Qd7 Qd8 25.Qb7+-; 23...Bc5?! 24.Nh4 Qd2 25.Nd3 Qd1 26.Bd1=) 24.Nd4 Nb3 25.Qb3 Be4=) 23...hg4=+ 24.hg4 Bh7 25.Nc4 (25.Kg2 a6=+) 25...Qc7 (25...Qb4 26.Bc2 Red8 27.Nfe5=) 26.Be5 (26.Bc2 Red8=) 26...Qd8=+ 27.Qe2 (27.Bc2 f6 28.Bd4 Qd5=) 27...Nd3 (27...Nf2 28.Kf2 Bh4 29.Kg1 Be1 30.Bc2 Bc2 31.Rc2–/+) 28.Red1? (better 28.Rcd1 Nec5 29.Bc2–/+) 28…Nec5 (28...Nec5 29.Rc3 Nb3–+). Sie – Cpu, AI Factory's Chess, 2016.

5.Ra2 a6 6.h3 (6.f3 Bf5 7.e3 ab5 8.Bb5 c6 9.Be2–/+; 6.Na3 Bb4 7.Nf3 0-0 8.Ne5 Bf5 9.Nd3–/+; 6.Ra1 Bd6 7.Nf3 Bf3 8.ef3 0-0 9.Be2–/+; 6.Ba3 ab5 7.ab5 Ba3 8.Na3 e5 9.Qa1–/+) 6...Bh5 7.g4 Bg6 8.e3 ab5 9.Bb5 –/+.

5.Ra2 Bb4 6.h3 (6.Nf3 Bf3 7.ef3 0-0 8.Be2 Nh5 9.g3=+; 6.a5 a6 7.f3 Bf5 8.Ra4 Bc5 9.ba6–/+; 6.Bd4 c5 7.Bb2 0-0 8.Nf3 Bf3 9.gf3–/+) 6...Bf5 7.Nf3 0-0 8.e3 a6 9.Ba3 =+.

5.Ra2 Bc5 6.Nf3 (6.f3 Bf5 7.e3 0-0 8.Ne2 Bd6 9.Ng3=+; 6.d4 Bd6 7.Ba3 0-0 8.h3 Bh5 9.g3=+) 6...0-0 7.e3 a6 8.h3 Bf5 9.Nh4 =+.

5.Ra2 Bd6 6.h3 (6.Nf3 0-0 7.e3 a6 8.Nc3 Ne4 9.h3=+; 6.a5 a6 7.h3 Bf5 8.Nf3 ab5 9.Nd4–/+; 6.Ba3 0-0 7.Bd6 Qd6 8.h3 Bh5 9.g4–/+; 6.Ra1 0-0 7.Nf3 a6 8.e3 Nbd7 9.Be2=+) 6...Bh5 7.Nf3 0-0 8.e3 Re8 9.Be2 =+.

5.Ra2 Nbd7 6.f3 (6.h3 Bh5 7.Nf3 Bd6 8.a5 Bf3 9.ef3=+; 6.Nf3 Bd6 7.a5 0-0 8.e3 a6 9.ba6=+; 6.a5 a6 7.ba6 ba6 8.h3 Bh5 9.g4=+) 6...Bf5 7.e3 Nh5 8.g3 Bd6 9.a5 =+.

5.Na3 Bb4 6.Nf3 (6.f3 Bf5 7.e3 Nbd7 8.Ne2 0-0 9.g4=+; 6.Nb1 0-0 7.Nf3 Nbd7 8.e3 c5 9.Be2=+; 6.c3 Bc5 7.Nf3 Nbd7 8.c4 0-0 9.cd5=+) 6...0-0 7.e3 Nbd7 8.Be2 Ne4 9.c3 =+.

5.Na3 Bc5 6.Nf3 (6.f3 Bf5 7.e3 Nbd7 8.Ne2 e5 9.Ng3=+) 6...Bf3 7.ef3 0-0 8.Be2 Nh5 9.g3 =+.

5.Na3 Bd6 6.Nf3 (6.a5 0-0 7.h3 Bf5 8.Nf3 c5 9.e3–/+; 6.h3 Bh5 7.Nf3 Bf3 8.gf3 Nbd7 9.Rg1=+; 6.g3 Nbd7 7.Bg2 e5 8.c4 c6 9.bc6=+; 6.c4 0-0 7.Nc2 dc4 8.Ne3 Nbd7 9.Nc4=+) 6...Nbd7 7.e3 Nc5 8.c4 c6 9.Rc1 =+.

5.Na3 Nbd7 6.h3 (6.Nf3 Bd6 7.e3 Nc5 8.c4 c6 9.Rc1=+; 6.a5 Bc5 7.f3 Bf5 8.e3 e5 9.Ne2–/+; 6.f3 Bf5 7.e3 Bd6 8.Ne2 e5 9.Ng3–/+; 6.c4 Bd6 7.Nf3 0-0 8.e3 e5 9.Qc2–/+) 6...Bf5 7.Nf3 Bd6 8.e3 e5 9.c4 =+.

5.Na3 Ne4 6.Bd4 (6.Nf3 Bb4 7.Bg7 Bf3 8.ef3 Bd2 9.Ke2–/+) 6...c5 7.Bb2 c4 8.Nf3 Bc5 9.e3 –/+.

5.a5 a6 6.c4 (6.h3 Bf5 7.ba6 Na6 8.e3 Bb4 9.g4=+; 6.Ra4 Bc5 7.ba6 Na6 8.Nf3 Bf3 9.ef3=+; 6.ba6 Na6 7.h3 Bf5 8.e3 Bb4 9.g4=+; 6.f3 Bf5 7.ba6 Na6 8.e3 Bd6 9.g4–/+) 6...dc4 7.Qa4 Qd7 8.ba6 Na6 9.Bf6 =+.

5.a5 Bb4 6.h3 (6.Nf3 Bf3 7.ef3 a6 8.Qe2 c5 9.Bc3–/+; 6.Ra4 Bc5 7.h3 Bh5 8.d4 Bd6 9.Ba3=+) 6...Bf5 7.Nf3 a6 8.Ra4 Be7 9.Nc3 =+.

5.a5 Bc5 6.f3 (6.Nf3 a6 7.Ne5 Bh5 8.d4 Bd6 9.Qd3=+; 6.d4 Bb4 7.c3 Bd6 8.Ba3 0-0 9.Bd6=+; 6.Nc3 0-0 7.h3 Bh5 8.Nf3 a6 9.e3–/+) 6...Bf5 7.e3 0-0 8.Ne2 a6 9.g4 =+.

5.a5 Bd6 6.h3 (6.Ra4 e5 7.Nf3 Qe7 8.d4 e4 9.Ne5=+; 6.Nf3 Bf3 7.ef3 0-0 8.Be2 a6 9.ba6–/+; 6.Ba3 0-0 7.Bd6 Qd6 8.h3 Bh5 9.g4–/+; 6.c4 0-0 7.Qc2 c5 8.cd5 ed5 9.e3–/+) 6...Bf5 7.Nf3 a6 8.Nc3 0-0 9.e3 =+.

5.a5 Be7 6.h3 (6.Nf3 Bf3 7.ef3 0-0 8.Nc3 a6 9.Qe2–/+; 6.Ra4 Nbd7 7.a6 ba6 8.Ra6 0-0 9.h3=+; 6.f3 Bf5 7.e3 Bd6 8.Ne2 0-0 9.Ng3=+) 6...Bf5 7.e3 a6 8.g4 Be4 9.f3 =+.

5.f3 Bf5 6.e3 (6.a5 Bd6 7.d3 e5 8.e4 Bg6 9.Be2=+) 6...Bd6 7.f4 c5 8.Nf3 0-0 9.Be2 =.

5.f3 Bh5 6.e3 (6.Nh3 Bd6 7.e3 0-0 8.Be2 Bg6 9.0-0=+; 6.a5 Bd6 7.e3 0-0 8.Nh3 a6 9.Nc3=+) 6...Bd6 7.Be2 e5 8.f4 Be2 9.Ne2 =.

5.Nf3 a6 6.e3 (6.Ne5 Bf5 7.e3 Bd6 8.Be2 Nbd7 9.Nd7=+; 6.ba6 Na6 7.Ne5 Bf5 8.e3 Nb4 9.d3=+; 6.Nc3 d4 7.Nb1 Bc5 8.e3 de3 9.fe3=+; 6.Ng5 Bd6 7.Nc3 Bf4 8.Nf3 d4 9.Na2=+) 6...Bd6 7.h3 Bf3 8.Qf3 Nbd7 9.Be2 =.

5.Nf3 Bb4 6.e3 (6.Ne5 Bf5 7.e3 0-0 8.Bd3 Ne4 9.0-0=+) 6...Nbd7 7.Be2 Bd6 8.0-0 0-0 9.h3 =.

5.Nf3 Bc5 6.e3 a6 7.h3 Bf5 8.Nh4 Be4 9.d3 =.

5.Nf3 Bd6 6.e3 (6.Ne5 Bf5 7.e3 0-0 8.Be2 Nbd7 9.f4=+; 6.h3 Bf3 7.ef3 0-0 8.Be2 Nh5 9.g3=+) 6...a6 7.h3 Bf3 8.Qf3 ab5 9.ab5 =.

5.Nf3 Nbd7 6.a5 a6 7.ba6 ba6 8.e3 c5 9.Be2=+.

5.Nf3 Nbd7 6.e3 Bd6 7.Be2 0-0 8.0-0 e5 9.Nc3 =+.

5.Nf3 Nbd7 6.e3 Bd6 7.Be2 e5 8.d4 e4 9.Nfd2 Be2 10.Qe2 c6 11.c4 Qb8 (11...0-0 12.Nc3=) 12.g3 (12.Nc3 0-0+= (worse 12...Bh2 13.g3 Bg3 14.fg3+-)) 12...0-0 13.0-0 Re8 (13...Bb4 14.Ba3 a5 15.ba6 ba6 16.Rc1=) 14.c5 Be7 15.Nc3 Qc7 16.a5 cb5 17.Qb5 Rab8 18.Qb3 Qc6 19.Nb5 Ra8 (19...a6 20.Nc3=) 20.Ba3+= Rec8 21.Rfb1 (21.Nd6 Bd6 22.cd6 Qa6+=) 21...Qe6 22.Nc3 (22.Nd6 Rc7=) 22...Rab8= 23.Nb5 Qa6 (23...a6 24.Nc3=) 24.Rd1 (24.Kg2 h6= (24...Qa5? 25.Na7 Re8 26.Bb4+-)) 24...Ng4 (worse 24...Qa5 25.Na7 Re8 26.Nb5+-) 25.Kg2 Ndf6 (25...Qa5? 26.Na7 Re8 27.Qd5+-) 26.h3 Nh6 27.Nc3 (27.g4 Nfg4 (27...Qa5?? 28.Na7 Rf8 29.g5+-) 28.hg4 Ng4=) 27...Rd8 (27...Qe6 28.g4 Nhg4 29.hg4 Qg4 30.Kf1=) 28.g4 (28.Rdb1 Bf8 29.Qb5 Qe6+=) 28...g5 (28...Nhg4 29.hg4 Ng4 30.Nd5 Rd5 31.Qd5=) 29.Nb5 (29.f3 ef3 30.Nf3 Nhg4 31.hg4 Qe6+-) 29...Ne8 (29...Qe6!?+=) 30.Nd6+- Bd6 (30...Nc7 31.Nf1+-) 31.cd6 Nf6 32.Bc5 1–0. DEFFM – abadjm, freechess.org, 2019.

5.h3 Bf5 6.Nf3 (6.e3 Bb4 7.Nf3 a6 8.ba6 Na6 9.Nd4=+) 6...Be4 7.e3 Bd6 8.Nc3 Bf3 9.Qf3 =+.

5.h3 Bh5 6.Qc1 (6.Nf3 Bd6=+ 7.e3 Nbd7 8.Be2 e5 9.0-0=+; 6.g4 Bg6 7.Bg2 Bc5 8.d3 c6 9.e3=+; 6.g3 Bc5 7.Bg2 Nbd7 8.c4 Bg6 9.cd5=+; 6.a5 a6 7.ba6 Na6 8.Nf3 Bc5 9.e3=+) 6...Bd6–/+ 7.c4 Ne4 (7...Nbd7 8.cd5 (8.g4 Bg6 9.d3–/+) 8...ed5 9.g4–/+) 8.Nf3 0-0 9.cd5 ed5 10.Nc3 Re8 11.Ne4 (11.Nd5 Bf3 12.gf3 Nf2–/+) 11...Re4 (11...de4 12.Qc3 f6 13.Nd4=+) 12.Qc3 (12.e3 Nd7=+) 12...f6 13.e3 Bf3 (13...a6 14.Qb3 Be7 15.Nd4=) 14.gf3= (White gets strong initiative) 14...Be5 15.Qc2 Bb2 16.Qb2 Re6 (16...Re7 17.d4=) 17.d4 (17.Rg1 a6=) 17...c6 (17...f5 18.f4=) 18.Bd3 a6 (18...Re7 19.Qb1 h6 20.Rg1=) 19.ba6+= Qa5 (19...ba6 20.Qb7 Nd7 A) 21.Ba6? Qa5 22.Ke2 Qa6 (22...Ra6? 23.Qd7 c5 24.Rhb1+-) 23.Qa6 Ra6–+; B) 21.Bf5=) 20.Ke2+/– b6 21.Rab1 Nd7 22.Qc2 g6 23.f4 f5 24.Rhg1 Kh8 25.Kf3 Rf8 26.h4 Nf6 27.Qb2 Rb8 28.Qb4+- Qb4 29.Rb4 Ne4 30.Ke2 c5 31.dc5 Nc5 32.a5 Nd3 33.Kd3 b5 34.a7 Ra8 35.Rb5 Ra7 36.h5 Rea6 37.hg6 hg6 38.Ra1 Kg7 39.Rd5 Kf6 40.Kc4 Ke6 41.Ra3 Rb7 42.f3 Rb1 43.e4 Rc6 44.Kd4 Rd1 45.Rd3 Rb1 46.Re5 Kf6 47.Rc5 Ra6 48.Rdc3 Rd1 49.Ke3 Re1 50.Kf2 Ra1 51.Rc6 Rc6 52.Rc6 Ke7 53.a6 Ra4 54.Rg6 fe4 55.fe4 Re4 56.Rg8 (56...Rf4 57.Ke3+-) 1–0. Reuter,Alfred – Gohla,Ulf, DESC, 2000.

5.a4 Ngf6 6.a5 a6 7.ba6 ba6 8.e3 Bd6=+ 9.Be2 –/+.

5.a4 Ngf6 6.e3 Bd6 7.Be2 0-0 8.0-0 e5 9.Nc3 =+.

5.Nc3 Ngf6 6.e3 e5 (6...Bd6 7.Be2 Nb6 8.0-0 0-0 9.d3=+) 7.Be2 Bd6 8.0-0 Qe7 (8...0-0=+ 9.a4=+) 9.h3 =+.

5.e3 Ngf6 6.h3 (6.Be2 Bd6 7.0-0 0-0 8.Nc3 e5 9.a4=+; 6.a3 Bd6 7.Be2 e5 8.0-0 0-0 9.Nc3=+; 6.Nc3 Bd6 7.Be2 e5 8.0-0 0-0 9.Rb1=+; 6.c4 Bd6 7.cd5 ed5 8.Be2 0-0 9.0-0=+) 6...Bh5 7.Be2 Bd6 8.g4 Bg6= 9.g5 =.

5.h3 Bf3 6.ef3 Ngf6 7.Be2 Nh5 8.g3 Bd6=+ 9.f4 =+.

5.h3 Bf3 6.gf3 Ngf6 7.Rg1 Rg8 8.e3 Bd6 9.c4 =+.

5.h3 Bh5 6.a4 Ngf6 7.Nc3 e5 8.g4 Bg6 9.g5 =.

5.h3 Bh5 6.Nc3 Ngf6 7.g4 Bg6 8.Nh4 Bd6 9.Ng6 =+.

5.h3 Bh5 6.e3 Ngf6 7.Be2 Bf3 (7...Bd6 8.g4 Bg6 9.g5=) 8.Bf3 a6= 9.a4 =.

5.h3 Bh5 6.g4 Bg6 7.Bg2 a6 8.ba6 Ra6 9.d3 =+.

5.ef3 a6 6.Qe2 Nd7 7.Nc3 Ngf6 8.ba6 Ra6 9.Qe3 =+.

5.ef3 Nd7 6.Nc3 (6.c4 Ngf6 7.cd5 ed5 8.Qe2 Be7 9.Qd3=+; 6.a3 Ngf6 7.Be2 Nh5 8.Bf1 Bd6 9.f4=+; 6.a4 Ngf6 7.a5 a6 8.ba6 ba6 9.c4=+; 6.Be2 Qg5 7.0-0 Ngf6 8.Re1 Bd6 9.a4=+) 6...Qh4 7.Qe2 Ngf6 8.a4 Qb4 9.Nd1 =+.

5.ef3 Nf6 6.c4 (6.Be2 a6 7.ba6 Na6 8.Nc3 d4 9.Ne4=+; 6.Bd3 Bd6 7.0-0 0-0 8.Re1 c5 9.c4=+) 6...Be7 7.cd5 Qd5 8.Qc2 Qd8 9.Nc3 =.

5.Nc3 Bc5 6.Rb1 (6.Ne5 Bh5 7.Nd3 Bd6 8.g3 Nbd7 9.Bg2=+; 6.e3 0-0 7.Be2 a6 8.ba6 Na6 9.0-0=+) 6...Nbd7 7.e3 0-0 8.Be2 Bd6 9.0-0 =+.

5.Nc3 d4 6.Nb1 Bc5 7.e3 de3 8.fe3 a6=+ 9.h3 =+.

5.Nc3 Bd6 6.e3 e5 7.Be2 Nbd7 8.0-0 0-0=+ 9.a4 =+.

5.Nc3 Nbd7 6.e3 Bd6 7.Be2 0-0 8.0-0 Nb6=+ 9.d3 =+.

5.Nc3 Nbd7 6.e3 Bd6 7.Be2 Qe7 8.0-0 e5 9.h3 =+.

5.Nc3 Nbd7 6.e3 Ne5 7.Be2 Bf3 8.Bf3 Nc4 9.Rb1 =+.

5.Nc3 Bf3 6.ef3 Bd6 7.Bd3 0-0 8.0-0 c5 9.bc6 =+.

5.Nc3 Bf3 6.ef3 Bd6 7.Be2 0-0 (7...a5 8.0-0 0-0=+ 9.a4=+) 8.0-0 c5 9.bc6 =+.

5.e3 Bd6 6.Bd3 e5 7.Be2 Nbd7 8.0-0 0-0 9.Nc3 =+.

5.e3 Bd6 6.Be2 Nbd7 (6...0-0 7.0-0 Nbd7 8.Nc3 c5 9.bc6=+) 7.0-0 0-0 8.h3 (8.a4 e5 9.h3=+) 8...Bf3=+ 9.Bf3 =+.

5.e3 Bd6 6.h3 Bh5 7.Be2 0-0 8.0-0 Nbd7 9.Nc3 =+.

5.e3 Bd6 6.Nc3 0-0 7.Be2 Nbd7 8.0-0 Nb6 9.d3 =+.

5.Ne5 Bf5 (5...Bh5 6.c4 Bd6 7.d4 Nbd7 8.f3 Be7=+ 9.Qd2=+) 6.e3 Nbd7 (6...Bd6 7.Be2 Nbd7 8.f4 Ne4 9.0-0=) 7.Be2 Ne5 8.Be5 Bd6=+ 9.Bd6 =+.

6.ba6 Na6 7.Nc3 Be7 8.Be2 0-0 9.0-0 =+.

6.Nc3 ab5 7.Bb5 c6 8.Bd3 e5 9.Be2 =+.

6.Nc3 ab5 7.Nb5 Nbd7 8.Be2 (8.h3 Bf3 9.Qf3=+) 8...c6=+ 9.Nc3 =+.

6.Bd3 ab5 7.Bb5 c6 8.Be2 Bd6 9.Nc3 =+.

6.h3 Bh5 7.g4 Bg6 8.ba6 Na6 9.Ne5 =+.

6.a4 Bd6 7.Be2 0-0 8.Nc3 c5 9.a5 =+.

6.Nc3 Bd6 7.Be2 Nb6 8.d3 0-0 9.0-0 =.

6.c4 dc4 7.Bc4 Bd6 8.d4 0-0 9.0-0 =.

6.Be2 Bd6 7.Nc3 e5 8.0-0 0-0 9.Rb1 =+.

6.h3 Bf3 (6...Bh5 7.Be2 Bf3 8.Bf3 Bd6 9.c4=) 7.Qf3 Bd6 8.c4 c6= (8...c5 9.cd5=) 9.Be2 =+.

5.a4 Nd7 (5...ab5 6.ab5 Ra1 7.Ba1 Nf6 8.h3 Bf5=+; 5...Nf6 6.Bg2 Bc5 7.Nf3 Nbd7 8.0-0 0-0=+) 6.h3 Bf5 7.Nf3 Ngf6 8.ba6 ba6 =+.

5.ba6 Na6 6.Bg2 Nf6 7.Nf3 Bd6 8.c4 0-0 =+.

5.f3 Bf5 6.e3 ab5 7.Bb5 c6 8.Be2 b5 =+.

5.h3 Bf5 (5...Bh5 6.a4 Nf6 7.Bg2 Bc5 8.d4 Be7=+) 6.e3 Nf6 7.Nf3 Bd6 8.g4 Bg6 =+.

5.c4 a6 6.cd5 ed5 7.Qb3 Nbd7 8.Bg2 ab5 –/+.

5.Bg2 a6 6.a4 (6.Nc3=+ e5 7.h3 Be6 8.Nf3 d4–/+) 6...Bc5 7.Nf3 0-0 8.0-0 Nbd7 =+.

5.Bg2 Bc5 6.d4 Bb4 7.c3 Ba5 8.Nd2 c6 =+.

5.Bg2 Nbd7 6.h3 Bf5 7.Nf3 h6 (7...Bc5 8.0-0=+ (8.d3 a6=+) 8...a6=+; 7...Bd6 8.0-0 e5=+) 8.d3 (8.0-0 Bc5= (8...a6=)) 8...Bc5 (8...a6 9.ba6 Ra6 10.0-0=; 8...Bb4=+) 9.a4 (9.Nh4 Bh7=+) 9...0-0=+ 10.0-0 a6 (10...Qe7 11.Nbd2=) 11.Nbd2 Qe7 12.d4 Bd6 13.c4 Bb4 14.Qb3 c6 (14...Rfe8 15.Bc3 Bc3 16.Qc3=) 15.c5 a5 (15...Ba5 16.b6=) 16.Rfc1 (16.Bc3 Bc3 17.Qc3 Rfe8+=) 16...e5 (16...Rfe8 17.Bc3 Bc3 18.Rc3=) 17.Bc3 (17.bc6 bc6 18.de5 Ne4 19.Ne4 Be4=) 17...Bc3 18.Qc3 e4 19.Ne1 e3 (19...Qe6 20.g4 Bg6 21.Nb3+=) 20.Qe3+= Qe3 21.fe3 Rfe8 22.Rc3 (22.Kf2 Re6+=) 22...Nf8 (22...Re7 23.Raa3+=) 23.Nef3 N8d7 24.Nh4 Bh7 25.Bf3 (25.Rf1 Kf8+=) 25...Rad8 (25...g5 26.Ng2+=) 26.Rf1 Re7 27.Nb3 (27.Ng2 Bf5 28.g4 Bh7+=) 27...Ra8= 28.b6 Ne4 (28...g5 29.Ng2+=) 29.Be4 Be4 30.Nd2 Nf6 31.Nhf3 (31.g4 Bh7+=) ½–½. Reuter,Alfred – Bursian,Arnold, WCCF, 2000.

5.h3 Bf5 6.Nf3 Bd6 7.Bg2 a6 8.a4 0-0 =+.

6.c3 Bd6 7.a4 0-0 8.Qc1 Nbd7 9.Na3 Nc5 10.Qc2 Bf5 11.Qd1 e5 12.d4 ed4!? 13.cd4 Nce4–/+ 14.f3 Bb4 15.Kf1 Nd6 16.Qb3 Ba5 17.Kf2 Rc8 –/+ (17...Qe7–/+).

6.c3 Bd6 7.a4 0-0 8.Qc1 Nbd7 9.Na3 Nc5 10.Qc2 Bf5 11.Qd1 e5 12.d4 ed4!? 13.cd4 Nce4–/+ 14.f3 Bb4 15.Kf1 Nd6 16.Qb3 Bd2 17.Bc1–/+ Ba5 –/+ (17...Bc1–/+).

6.c3 Bd6 7.a4 0-0 8.Qc1 Nbd7 9.Na3 Nc5 10.Qc2 Bf5 11.Qd1 e5 12.d4 ed4!? 13.cd4 Nce4–/+ 14.f3 Ng5 15.Qd2 Ne6 16.Nh3 a6 17.g4 Bg6 –/+.

6.c3 Bd6 7.a4 0-0 8.Qc1 Nbd7 9.Na3 Nc5 10.Qc2 Bf5 11.Qd1 e5 12.d4 ed4!? 13.cd4 Nce4–/+ 14.Nh3 Qc8 15.Nf4 Bb4 16.Kf1 Ng4 17.Be4 Be4 –/+.

6.c3 Bd6 7.a4 0-0 8.Qc1 Nbd7 9.Na3 Nc5 10.Qc2 Bf5 11.Qd1 e5 12.d4 ed4!? 13.cd4 Nce4–/+ 14.Nh3 Qd7 15.Nf4 Bb4 16.Kf1 Ng4 17.Be4–+ Be4 –+.

6.c3 Bd6 7.a4 0-0 8.Qc1 Nbd7 9.Na3 Nc5 10.Qc2 Bf5 11.Qd1 e5 12.d4 Nce4 13.f3!? Ba3 14.Ra3 Nd6 (14...Ng5 15.g4 Bc8 16.de5 Nd7 17.Qd5 Ne6 18.e3+=) 15.de5 Nc4 16.ef6 Nb2 17.Qd4+= Qf6 18.Qf6 +=.

6.c3 Bd6 7.a4 0-0 8.Qc1 Nbd7 9.Na3 Nc5 10.Qc2 Bf5 11.Qd1 e5 12.d4 Nce4 13.f3!? ed4 14.fe4 dc3 15.Bc3 (15.ef5 cb2 16.Ra2= c6 17.Nb1= Bb4 18.Kf1–/+) 15...Ne4 16.Qd4 Nc3 17.Qc3 Qe7 18.Nc2 =.

6.c3 Bd6 7.a4 0-0 8.Qc1 Nbd7 9.Na3 Nc5 10.Qc2 Bf5 11.Qd1 e5 12.d4 Nce4 13.Nf3 Ng4 (13...ed4 14.Nd4 Bg6 15.0-0 Re8 16.c4 Ba3 17.Ra3=+) 14.0-0 f6 (14...Nef2 15.Rf2 e4 16.Nh4 Nf2 17.Qf1–/+) 15.Nc2 (15.c4 Nef2 16.Rf2 e4= 17.Nd2=) 15...c6 (15...Nef2 16.Rf2 Nf2 17.Kf2=) 16.h3 (16.bc6 bc6 17.Nh4=+) 16...Nef2 (16...Ngf2 17.Rf2=+) 17.Rf2 (17.Qc1=+) 17...Nf2 18.Kf2 Qb6 19.Ne3 Be4 20.c4 Rad8?? (better is 20...ed4 21.Nd4 Rae8=) 21.c5+- Bc5 22.dc5 Qc7 23.bc6 Qc6 24.Qb3 Rf7 25.Rc1 d4 26.Ng4 Bd5 27.Qb4 Rc7 28.Kg1 Kh8 29.a5 h6 30.Kh2 Qe6 31.Qd2 Kh7 32.Qc2 g6 (32...Kh8 33.Qg6+-) 33.e4 de3 34.Ne3 Bb3 35.Qe4 Qd7 36.Ng4 Qg7 37.Rb1 Ba2 38.Ra1 Bd5 39.Qe3 Bc6 40.a6 ba6 41.Ra6 Rb8 42.Bc1 h5 43.Ng1 Rbc8 44.Nf6 Qf6 45.Bc6 Rc6 46.Ra7 R6c7 47.Rc7 Rc7 48.Nf3 Qf5 49.Ne5 Kg8?? 50.Bd2 Re7 51.Bc3 Qc2 52.Kg1 Rb7 53.Nf3 Rb1 54.Ne1 Kf7 55.Qe5 Rd1 56.Qg7 Ke8 57.c6 Qe4 58.Qh8 Kf7 59.Qf6 Ke8 60.Kh2 Qf5 61.Qh8 Kf7 62.Qg7 Ke6 63.Qg8 Ke7 64.Bb4 Kf6 65.Qf8 Ke6 66.Qe7 Kd5 67.Qd8 Kc4 68.Qd1 Qf2 69.Ng2 Kb4 70.c7 Qf5 71.Qd6 Kb5 72.Qd8 Qe6 1–0. NN – SuperConstellation4, 1988.

5.Nf3 a6 6.Nc3 (6.ba6 Na6 7.e3 Bf3 8.gf3 Nf6 9.Rg1=+; 6.g4 Bg6 7.e3 ab5 8.Bb5 c6 9.Be2=+; 6.e3 Nf6 7.g4 Bg6 8.ba6 Na6= 9.Ne5=+; 6.a4 Nf6 7.e3 Bd6 8.Be2 0-0 9.Nc3=+) 6...Nf6 7.e3 Bd6 8.Be2 0-0 9.0-0 =.

5.Nf3 Nd7 6.e3 (6.a4 Ngf6 7.Nc3 Bf3 8.ef3 Bc5 9.a5=+; 6.Nc3 Ngf6 7.g4 Bg6 8.Nh4 Bd6 9.Ng6=+; 6.g4 Bg6 7.Bg2 Ngf6 8.0-0 Bd6 9.d3=+) 6...Ngf6 7.Be2 Bf3 (7...Bd6 8.g4 Bg6 9.g5=) 8.Bf3 a6 (8...Bd6= 9.c4=) 9.a4 =.

5.Nf3 Bf3 6.ef3 (6.gf3 Nf6 7.Rg1 a6 8.ba6 Na6 9.e4=+) 6...Nf6 7.c4 (7.Be2 Bd6 8.0-0 a6 9.Nc3=+) 7...a6 (7...Bd6 8.cd5 ed5 9.Qe2=+) 8.Qb3 Nbd7=+ (8...ab5 9.cd5=+) 9.ba6 =+.

5.Nf3 Nf6 6.e3 (6.g4 Bg6 7.Ne5 Be4 8.Rg1 Nbd7 9.d3=+) 6...Bd6 7.Be2 0-0 (7...Nbd7 8.g4 Bg6= 0.06 9.g5=) 8.0-0 Nbd7 9.Nc3 =+.

11.Be2 Ra7 12.0-0 Rc8 13.d4 Ne4 14.Bd3 f5 15.Qe2 Be8 16.Be4 =.

11.Be2 Rc8 12.0-0 Ne4 13.d3 Nf6 14.d4 Ne4 15.Bd3 f5 16.Qe2 =.

11.Be2 e5 12.0-0= Be6 13.d4 Nbd7 14.Qe1 Qe1 15.Re1 Rfc8 16.Rc1 =.

11.Be2 e5 12.0-0= Bf5 13.d4 Nbd7 14.Nh4 Be4 15.f3 Bg6 16.Ng6 =.

12.0-0 Rc8 13.c3 Qe4 14.Qb3 Qg6 15.d4 Re8 16.Nbd2 e5 17.Kh2 e4 18.Ne1 a5 19.Nc2 Be6 20.b6 Nbd7 21.Qb2 Rec8 22.Rb3 Rc6 23.Na3 Qh6 24.Bb5 Rcc8 25.Bd7 Bd7 26.Nb5 Rab8 27.Qa1 Qg6 28.Na7 Rd8 29.Rb2 Qh5 30.Nb3 g5 31.Na5 g4 32.Qd1 Qh6 33.Rg1 gh3=+ 34.g4 Qh4 35.Nb5 Ng4 36.Kh1 Bf5 37.Nc7 Kh8 38.Qf1 Nf6–/+ 39.Kh2 Rg8 40.Rg8 Rg8 41.Ne6 fe6 42.Nb3 Bg4 43.Rd2 Bf3 44.Qh1 Rg2 45.Qg2 hg2 46.Kg1 Qh1# 0–1. bambinik – Peoncin, internet, 2002.

12.0-0 Re8 13.d4 e5 14.Qe1 Qe1 15.Re1 Bf5 16.Rc3 =.

12.Qc1 b6 13.c3 Rc8 14.0-0 Qc5 15.Qb2 ab5 16.ab5 =.

12.Qc1 Rc8 13.0-0 Qa5 14.Qb2 e5 15.d4 e4 16.Nfd2 =.

12.Qc1 e5 13.0-0 Rc8 14.d4 e4 15.Nfd2 Qa5 16.Qb2 =.

12.Qc1 Re8 13.0-0 e5 14.d4 Qa5 15.Qb2 e4 16.Nfd2 =.

12.c3 Qa5 13.d4 Rc8 14.0-0 Qc7 15.Qb3 ab5 16.ab5 =.

12.0-0 Ra7 13.d4 Ne4 14.Bd3 f5 15.Qe1 Qe1 16.Re1 =.

12.0-0 Rc8 13.d4 Ra7 14.Bd3 Rcc7 15.Qe1 Qe1 16.Re1 +=.

12.0-0 Ne4 13.d3 Nf6 14.d4 Rc8 15.Bd3 Rc7 16.Nfd2 =.

12.0-0 e5 13.d4 Re8 14.Qe1 Qe1 15.Re1 Ra7 16.Rc1 +=.

12.0-0 Re8 13.d4 Ne4 14.Bd3 Nf6 15.c3 e5 16.Nfd2 +/–.

12.0-0 b6 13.d4 Rc8 14.Bd3 Rc7 15.Nfd2 Rc8 16.Qc1 +-.

12.0-0 Rc8 13.d4 Ne4 14.Bd3 f5 15.Qe2 Qc7 16.Rb3 =.

12.0-0 Ne4 13.d3 Nf6 14.d4 Ne4 15.Bd3 f5 16.Qe1 =.

12.0-0 e5 13.d4 Re8 14.Qe1 Qe1 15.Re1 Bf5 16.Rc3 =.

12.0-0 Re8 13.d4 e5 14.Qe1 Qe1 15.Re1 Bf5 16.Rc3 =.

12.0-0 b6 13.d3 Nf6 14.c3 Rc8 15.Nd4 ab5 16.ab5 +/–.

12.0-0 Nc5 13.c3 b6 14.d4 Ne4 15.Bd3 f5 16.Be4 +/–.

12.0-0 Rc8 13.d3 Nf6 14.d4 Ne4 15.Bd3 f5 16.Qe1 =.

12.0-0 Re8 13.d4 Rc8 14.Bd3 f5 15.Qe2 Ra7 16.Rc1 =.

12.0-0 Nf6 13.Re1 b6 14.c3 Ne4 15.d3 Nc5 16.Nfd2 +=.

12.c3 Rc8 13.0-0 b6 14.Nd4 Nc5 15.Qc2 Rc7 16.ba6 =.

12.0-0 Qb4 13.d4 e5 14.Qe1 Qe1 15.Re1 Bf5 16.Rc3 =.

12.0-0 b6 13.d4 e5 14.Qe1 Qe1 15.Re1 Ra7 16.Rc1 =.

12.0-0 Rc8 13.d4 Ne4 14.Bd3 f5 15.Qe1 Qe1 16.Re1 =.

12.0-0 Ne4 13.Qe1 Qc7 14.d3 Nf6 15.Qd2 b6 16.c4 =.

12.0-0 e5 13.d4 Bf5 14.Nc3 e4 15.Nd2 Rc8 16.Ncb1 =.

8.c4 e5=+ 9.Nc3 e4 10.g4 Ng4 11.hg4 Bg4 12.Be2 ef3 –+.

8.c4 e5=+ 9.cd5 Nd5 10.g4 Bg6 11.Nc3 Nb4 12.Rc1 e4 –/+.

8.c4 e5=+ 9.Be2 dc4 10.Na3 Be7 11.Nc4 e4 12.Ng5? Be2–/+ 13.Qe2 h6 14.Nf7 Kf7 15.0-0 Rhe8 16.f3 Kg8 17.f4 Rac8 18.Ne5 Bd6 19.Qc4 Kh8 20.Qf7?! Ne5 (21.Qc7 Rc7 22.Be5 Be5 23.fe5 Re5–+) 0–1. Gross,Wilhelm – Merten,Rainer, corr Germany, 1988.

8.c4 e5=+ 9.g4 Bg6 10.Nc3 dc4 11.g5 Ne4 12.Bc4 Rd8 =+.

9.Nc3 Rb8 10.Rb1 e5 11.g4 Bg6 12.Bg2 Bb4 13.Nh4 –/+.

9.Nc3 Rb8 10.Rb1 Bf3 11.Qf3 e5 12.Be2 Ne4 13.Ne4 =+.

9.Nc3 e5=+ 10.g4 Bg6 11.Nh4 Bb4 12.Ng6 hg6=+ 13.Na2 =+.

9.d4 Rb8 10.Ra2 e6 11.Bd3 c5 12.dc5 Bc5 13.0-0 =+.

9.Be2 Rb8 10.Bf6 Nf6 11.c4 e5 12.cd5 e4 13.Nd4 =+.

9.Bf6 Nf6 10.d4 e6 11.Bd3 Bb4 12.c3 Bd6=+ 13.Nbd2 =+.

9.g4 Bg6 10.g5 Rb8 11.Ra2 Ne4 12.d3 Qa5 13.c3 =+.

9.Nc3 Rc8 10.Rb1 Ne4 11.bc6 bc6 12.d3 Nec5 13.h4 =.

9.Nc3 Rc8 10.Rb1 e5 11.bc6 bc6 12.Nh4 Rb8 13.Ng6 =+.

9.Nc3 Rc8 10.Nh4 Be4 11.Ne4 Ne4 12.Nf5 e5 13.bc6 =+.

9.Nc3 Rd8 10.Nh4 e5 11.Ng6 hg6 12.bc6 bc6=+ 13.Rb1 =+.

9.Nc3 Ne4 10.Ne4 Be4 11.d3 Qa5 12.c3 Bf3=+ 13.Qf3 =+.

9.Nc3 e5 10.Nh4 Bb4 11.Ng6 hg6 12.h4 Nc5=+ 13.f3 =+.

9.Nc3 e6 10.Rb1 Rb8 11.Nh4 Be4 12.Nf3 h6= 13.Ne4 =.

9.d3 e5 10.g5 Ng8 11.Nh4 Be7 12.Rg1 a6 13.Nd2 =.

9.d3 h6 10.Bg2 e5 11.0-0 Rd8 12.Nh4 Bh7 13.f4 =+.

9.g5 Ne4 10.d3 Qa5 11.c3 Nec5 12.d4 Ne4=+ 13.Nbd2 =+.

9.g5 Nh5 10.Be2 h6 11.bc6 bc6 12.h4 Rb8= 13.Bc3 =.

4.c4 c6 5.e3 (5.h3 Bf5+=) 5...e6 6.Be2 Be2 7.Ne2 Ngf6 8.a3 Bd6 (8...a5 9.c5+=) 9.d3 (9.c5 Bc7+=) 9...Ne5 (9...0-0 10.Nd2–/+) 10.Qc2 (10.Be5!? Be5 11.d4+=) 10...dc4–/+ 11.dc4 Nd3! 12.Kf1 (12.Qd3 Bb4 Pinning) 12...Nb2 13.Qb2 Be5! 14.Nbc3 (14.Qe5 Qd1 Mate attack) 14...Qd3–+ 15.Rc1 Rd8 16.Qc2 Qc4 17.g3 Bc3 18.Qc3 Qe4 19.Kg1 0-0 20.Qc4?? (20.Qb2–+) 20…Rd1!! (20...Rd1 21.Rd1 Qc4–+) 0–1. Tirado Parra,A (1910) – Valles Moreno,I (2390), II Oliver Gonzalez Memorial, 2011.

4.c4 e5 5.cd5 Bb4 6.Qc4 Be2 7.Ne2 +-.

4.c4 Ngf6 5.h3 Bf5 6.e3 e6 7.c5 c6 (7...a5 8.a3+=) 8.d4+= Be7 9.Nf3 Ne4 10.Nbd2 0-0 11.Ne4 Be4 12.Be2 Qc7 13.a4 White plans b5 13...Bf6 14.0-0 e5 15.b5 Bf3 (15...Rfe8!?=) 16.Bf3+= e4 17.Be2 Bg5 18.Bc3 f5 19.Bd2 f4 20.f3 (better is 20.ef4 Bf4 21.Rb1+=) 20...Bf6? (better is 20...Rae8 21.ef4 Bf4=) 21.fe4+/– fe3 22.Be3 de4 23.bc6 bc6 24.Qc4 Kh8 25.Bf4 Bd4 (25...Qd8 26.Bg3+/–) 26.Qd4+- Rf4 27.Rf4 Qf4 28.Rf1 (worse is 28.Qd7 Qe3 29.Kh2 Qe2 30.Qc6 Rg8+=) 28...Qg3 29.Qd7 Qe3 30.Kh2 Qe2 31.Qa7 (better is 31.Qc6!? Rg8 32.Rf7+-) 31...Rg8+= (31...Ra7?? 32.Rf8) 32.Rb1 Qf2 33.Qe7 e3 34.Qg5 (better is 34.Rb4+=) 34...e2–+ 35.Qd2 h6 36.Re1 Re8 37.a5 Qc5 38.Re2 Re2 39.Qd8 Kh7 40.Qd3 Kh8 41.Qe2 Qa5 42.Qe8 Kh7 43.Qe4 Kh8 44.Qe8 Kh7 45.Qe4 Kh8 46.Qc6 Qe5 47.Kg1 Qe1 48.Kh2 Qe5 49.g3 Qe2 50.Qg2 Qg2 51.Kg2 Kg8 52.Kf3 Kf7 53.Kg4 Kg6 54.Kh4 Kf5 55.Kh5 Kf6 56.g4 Kf7 57.g5 hg5 58.Kg5 Kg8 59.Kg6 Kf8 60.h4 Kg8 61.h5 ½–½. Enxtuul,Altanolzii (1890) – Haitovich,Avital, Wch U14 Girls, 2007.

4.e3 Ngf6 5.Be2 Be2 6.Ne2 e6 7.a3 Bd6 8.c4 c6 9.d3 0-0 10.Nd2 Rc8 11.c5 Be5 12.Be5 Ne5 13.Qc3 Nfd7 14.Nd4 Qf6 15.Ne2?? (better is 15.0-0=) 15…Nd3!–+ (15...Nd3 16.Qd3 Qa1 17.Nb1 b6 18.cb6 ab6–+) 0–1. Tirado Parra,A (1880) – Krulich,R (2225), 34th Open Donostia ESP, 2011.

5.c5 a5 6.a3 Ngf6 7.Nf3 ab4 8.ab4 Be7 9.Ra8 Qa8 10.e3 Bf3 11.gf3 Qa4 12.Qc3 0-0 13.Qa3 Ra8 14.Qa4 Ra4 15.Bc3 g6 16.d4 c6 (16...Ra2 17.b5=+) 17.Kd1 (17.b5 Ra2=) 17...Bd8 18.b5 Ra2 19.Bd2 e5 20.Nc3 Ra8 21.Kc2 Ne8 22.f4 ed4 23.ed4 Nf8 (23...Bf6 24.Kd3=) 24.Bd3 (24.f5 Bf6 25.Be3 Ng7 26.fg6 hg6+=) 24...Ne6 25.Be3 f5 26.Ne2 Nf6 27.Rg1 Kf7 28.b6 Nh5 29.Kb2 (29.Re1 Bf6=) 29...Bf6 30.Rc1 Bg7 31.Rc3 Ke8 (31...Ra4 32.Bc2 Nd4 33.Nd4 Rd4 34.Kb3–+) 32.Bc2 Nd4?? (better is 32...Bh6–/+) 33.Bd4+- Bd4 34.Nd4 Nf4 35.Rf3 Nh5 36.Re3 Kf7 37.Ra3 Ra3 38.Ka3 Nf6 39.Ba4 Nd7+/– 40.Bc6 bc6+= 41.b7 Nb8 42.Kb4 Ke8 43.Ka5 g5 44.Kb6 g4 45.Nc6 Nd7 46.Kc7 f4 47.Nd4 Ke7 48.c6 Nc5 49.Kb6 Nb7 50.cb7 Kf7 51.b8Q (51...Kg6 52.Qf4 Kg7 53.Qg4 Kf7 54.Qf5 Ke8 55.Qh7 Kf8 56.Kc6 Ke8 57.Ne6 d4 58.Qd7#) 1–0. mrkt – anderson_brasil, internet, 2006.

5.cd5 ed5 6.Nf3 Bb4? 7.Bg7 Bf3 8.gf3 +- (8.Bh8?! Be4+-; < 8.ef3 Bd2 9.Nd2 c5+-).

5.cd5 ed5 6.Nf3 Ngf6 =+.

5.e3 Bb4?? 6.Bg7 Bd2 7.Qd2 dc4 8.Bh8 +-.

5.e3 Bb4?? 6.Bg7 d4 7.ed4 +-.

5.e3 Ngf6 6.a3 a5 (6...Bd6 7.cd5 ed5 8.Nf3–/+) 7.c5 (7.h3 Bf5=+) 7...c6 (7...e5 8.Bb5 c6 9.Be2=+) 8.Be2 Be2 (8...ab4 9.Bg4 Ng4 10.ab4 Ra1 11.Ba1=+) 9.Ne2 b6 (9...ab4 10.ab4 Ra1 11.Ba1=+) 10.d4 (10.cb6 Qb6 (10...Nb6 11.Bf6 Qf6 12.Qc6 Ke7 13.d4+/–) 11.ba5 Ra5=+) 10...Be7 (10...ab4 11.ab4 Ra1 12.Ba1=+) 11.0-0 0-0 12.Nd2 (12.Nbc3 ab4 13.ab4 Ra1 14.Qa1 Qc7=+) 12...Qc7 (12...ab4 13.ab4 Ra1 14.Qa1=+) 13.Qc2 (13.cb6 Qb6 14.ba5 Ra5=+) 13...Ng4 (13...ab4 14.ab4 Rfb8 15.Nf4=) 14.g3 (14.Nf4 ab4 15.ab4 Rfb8=) 14...f5 (14...ab4 15.ab4 Rfb8 16.Nf4=+) 15.Nf4= Rf6 (15...e5 16.Ne6 Qb7 17.Nf8 Rf8 18.h3+-) 16.h3 (16.cb6 Qb6 17.h3 Nh6=) 16...Nh6 (16...e5 17.Nh5 (17.hg4?! ef4 18.g5 Rg6=) 17...ab4 18.hg4+/–) 17.Nd3 (17.cb6 Qb6 18.ba5 Ra5=) 17...a4 (17...b5 18.Nb3=) 18.cb6 Qb6 19.Rac1 Nb8 (19...Ra6 20.Nf4+=) 20.Nf3 (20.Ne5 Ra6+=) 20...Rf8 (20...Nf7 21.Nfe5+=) 21.Nf4 Re8 (21...Rf6 22.Ng5+/–) 22.Ne5 Ra6 (22...Bd6 23.Nc6 Bf4 24.ef4 Nc6 25.Qc6+/–) 23.Qe2 (23.f3 Bd6 24.Nfd3 Nf7+=) 23...Bd6 24.Nfd3 (24.Qh5 Re7+/–) 24...Ra7 (24...Qb5 25.Qf3+=) 25.Rc2 (25.Nc5 Be5 26.de5 Nd7+/–) 25...Nf7+= 26.Rfc1 (26.Qh5 Rf8+=) 26...Ne5 27.de5 Bf8? (better is 27...Be7+=) 28.Bd4+- Qa6 (28...c5 29.Nc5 (< 29.bc5 Qc7+/–) 29...Rc7 30.Na4 Rc2 31.Rc2+- (31.Nb6? Re2 32.Kg2 Ra2–+; 31.Qc2?! Qa6+-)) 29.Ba7 Qa7 30.Nc5 (30.Qf3 Rd8+-) 30...g6 (30...Qc7 31.Qh5 g6 32.Qd1+-) 31.Rc3 (31.Qf3 Qg7 32.Na4 Qe5+-) 31...Bg7 (31...Qg7 32.f4+-) 32.f4 Bf8 33.h4 (33.Qd3 Bc5 34.Rc5 Rd8+-) 33...h6 (33...Be7 34.Qd3+-) 34.Kf2 (34.Qd3 Bc5 35.Rc5 Rd8+-) 34...Re7 (34...Be7 35.Kg2+- (35.Ne6?! Bb4 36.ab4 Re6+/–)) 35.Qc2 Re8 36.Qd1 (36.Na4 Rd8+-) 36...g5 (36...Be7 37.Na4 Rd8 38.Kg2+-) 37.hg5 (37.Qh5 Qe7+-) 37...hg5 (37...Bc5 38.Rc5 hg5 39.Qh5+- (39.fg5?! Qg7+-)) 38.Qh5 (38...Qe7 39.Ke1+-) 1–0. Lapshun,Yury (2430) – Paschall,William M (2425), 53rd NY Masters, 2003.

5.a3 Ngf6 6.Be2 Be2 7.Ne2 Bd6 8.d3 (8.0-0 a5+=) 8...a5 (8...0-0 9.0-0+=) 9.b5 0-0 10.0-0 e4 (10...c6 11.Nbc3+=) 11.Nf4 (11.Nd2 Qe7+=) 11...Nc5 12.Qd1 Bf4 13.ef4 ed3 14.cd3 Re8 (14...d4 15.Qc2 Qd5 16.Nd2+=) 15.a4 (15.Be5!?=) 15...d4–/+ 16.Ba3 Ne6 17.g3 Qd5 18.Nd2 g6 (18...c5 19.bc6 Qc6 20.Rc1=) 19.Qf3 Qf3 20.Nf3 Nd5 21.Rfe1 Nc3 22.Bb2 Nc5 23.Nd4 (23.Bc3!? dc3 24.Ra3 Re1 25.Ne1=) 23...N3a4 (23...Re1 24.Re1 N3a4–/+) 24.Ba3 (better is 24.Re8!? Re8 25.Nb3 Nb2 26.Nc5+=) 24...Re1 25.Re1 Rd8 26.Rc1 (26.Bc5 Nc5 27.Nf3 Nd3–+) 26...Rd4 (26...Nd3!? 27.Rc7 Rd4 28.Rb7–+) 27.Bc5 Rd3 28.Be7 (better is 28.Rc4 Nc3 29.b6–+) 28...Nc3 29.Rc2 (29.Kf1 Nb5 30.Bf6 Rd5–+) 29...Nb5 30.Bf6 Rd6 31.Be5 Re6 (31...Rd7 32.Ra2 b6 33.Kf1–+) 32.Rb2?! (32.Bc7 b6 33.g4–+) 32...c6 33.Rd2 f6 (33...f6 34.Bb2 a4–+) 0–1. Cavadini,Ignacio (2110) – Valerga,Diego (2505), Villa Martelli Argentina, Pro–Am Open, 2010.

5.Be2 Qg5 6.g3 Bb4 7.a3 Bd6 8.d4 e4 9.Qd2 h5 10.Bg4 hg4 11.h3 gh3 12.Rh3 Rh3 13.Nh3 Qh5 14.Ng1 (14.Nf4 Qh1 15.Ke2 Ngf6–+) 14...0-0-0 (14...Qh2!? 15.Kf1–+) 15.Qe2 Qe2 16.Ne2 Nb6 17.Nd2 Na4 (17...Nf6 18.Bc3–+) 18.Bc3 Nc3 19.Nc3 c6 20.a4 Nf6 21.Ne2 Rh8 22.Ng1 (22.Nf1 Rh1 23.Rb1 a5–+) 22...g5 (22...Ng4!? 23.c4–+) 23.c4 Rh1 24.Ke2 Ng4 25.Rc1 (25.cd5 cd5 26.Rc1 Kb8–+) 25...Kd7 (25...Rh2!? 26.Rf1–+) 26.cd5 cd5 27.Rb1 b6 28.Nb3 (28.Rf1 Rh2–+) 28...Nh2 (better is 28...Rh2 29.Rf1 f5–+) 29.Nd2 f5 30.Nh3 Rb1 31.Nb1 Nf3 32.Nd2?! g4 33.Nf4 Bf4 34.ef4 Nd4 35.Kd1 Kc6 36.Nb1 Kc5 37.Nc3 Nf3 38.Kc2 d4 39.Nd1 Kb4 40.Nb2 Ng1 41.a5 Nh3 42.ab6 ab6 43.Nd1 b5 44.Kd2 Kb3 (45.Kc1 Ka2–+) 0–1. Istvanny (1640) – dunk, internet, 2007.

5.Nf3 e5 6.Ne5 Ne5 7.Be5 =.

6.a3 a5 7.b5 =+.

6.a3 Be4 7.Nc3 =+.

6.a3 Qe7 7.Nc3 0-0-0 =.

6.a3 Qe7 7.Nc3 a5 =.

6.e3 Bg6 7.Bb5 Ngf6 8.a3 Bd6 9.Nh4 =+.

5.a3 e5 =+.

5.c4 e5 6.cd5 Bb4 7.Nf3 Bd6 8.Nc3 Ne7 9.g4 =+.

5.Nf3 Bf3 6.gf3 e5 7.Rg1 g6 (7...Ngf6 8.a3=+) 8.f4= Bg7 (8...f6 9.fe5 Ne5 10.a3=) 9.c4 (9.Bg2 c6=) 9...c6 (9...d4 10.fe5 Ne5 11.Na3=+) 10.Na3 (10.Bg2 d4=) 10...Ne7 (10...d4 11.Nc2=) 11.fe5 Ne5 (11...Be5 12.Be5 Ne5 13.d4 Nc4 14.Nc4 dc4 15.Qc4=) 12.d4 (12.f4 Nf5 13.Rg5 f6 14.Rf5 gf5 15.cd5 Qd5 16.fe5 fe5+=) 12...Nd7 13.Qf4 (13.e3 Nf6=) 13...0-0 (13...Qb6 14.Qd2=) 14.Qf3 (14.Bg2 Qb6 15.Qd2 Nf6=) 14...Nf6 (14...a5 15.b5=) 15.e3 Ne4 (15...Qb6 16.Nc2=) 16.Bd3 (16.cd5 cd5 17.Bd3 Nc6=) 16...f5 17.Nc2 Nc8 (17...a5 18.a3=) 18.a4 (18.cd5 Qd5 19.Qe2 Ncd6=) 18...Ncd6 (18...Nb6 19.c5 Nc4 20.Bc4 dc4 21.a5=) 19.c5 Nc4 (19...Nf7 20.a5=) 20.Bc4 dc4 21.Qf4 (21.a5 c3 22.Bc1 Qd5=) 21...c3 (21...a5 22.f3 Nf6 23.Qg5=) 22.Bc1 Qe7 (22...Qd5 23.Ra3=) 23.b5 (23.f3 Nf6=) 23...Rae8 (23...Qd7 24.f3 Nf6 25.bc6 Qc6 26.Qg3=+) 24.f3 Nf6 25.Qd6 Qd6 26.cd6 Nd5 27.Rb1 Ne3 28.Be3= f4 29.d7 Re7 30.bc6 bc6 31.Rb7 Rd8 32.Ra7 fe3 33.Ke2 Red7 34.Rd7 Rd7 35.Rd1 Bh6 36.Rd3+= Ra7 37.Rc3 (37...Ra4 38.Rc6+=; < 37.Ne3 Ra4 38.Rc3 Rd4=+). pierred (2195) – cler (1840), ICC, 2006.

5.Nf3 Ngf6 6.c4 dc4 7.Qc4 Nb6 8.Qb3 Qd5 9.Nc3 Qb3 10.ab3 a6 (10...Bf3 11.gf3 e6 12.Rg1=) 11.b5 ab5 12.Ra8 Na8 13.Nb5 c6 (13...Bf3 14.gf3 c6 15.Nc3=) 14.Na3 (14.g4 Bg6 15.Nbd4 e6=) 14...e6 15.Nc4 Nd7 16.Na5 Nc5 17.Ne5 (17.g4 Bg6=) 17...b6 (17...f6!? 18.b4 Na4=+ (< 18...fe5 19.bc5 Bc5 20.Nb7+=)) 18.Nac6 Nb3 19.h4 f5 20.Rh3 Nc5 21.Ra3 Nc7 22.Ra7 Bd6 23.e3 0-0? (23...Rg8 24.Nc4 Kd7 25.N6e5 Ke7+-) 24.Nc4+- Nb5?? (24...Bh2 25.g3 Ne8+-) 1–0. pierre (2180) – thotares (1645), internet, 2007.

4.e3 Nd7 5.a3 Ngf6 6.c4 c5 7.cd5 cb4 8.f3 Rc8 9.Qd1 Bf5 10.e4 Ne4!–+ 11.fe4? Qh4 12.Ke2 Qe4 13.Kf2 Rc2 14.ab4 Rb2 15.Nc3 Qh4 16.g3 Qd4 17.Ke1 Be4 18.Nf3 Bf3 19.Ne2 Qe4 (20.d6 Bd6–+) 0–1. WoodPusher83 – pierred, ChessWorld.net, 2006.

4.Be5 Nc6 5.Qb2 Ne5 6.Qe5 Be6 7.e4 Nf6 8.ed5 Qd5 9.Qd5 Nd5 10.a3 a5 11.b5 Bd6 12.Bc4 0-0 13.Ne2 Rfe8 14.Kf1 a4 15.Bd5 Bd5 16.Nbc3 Be6 17.f3 Rad8 18.d3 Bc5 19.Na4+/– Be3 20.Nb2 f6 21.a4 Bf7 22.a5+- Re5 23.Nd1 Bf2?? 24.Kf2 Rb5 25.Ndc3 Rb4 26.Rhb1 c5 27.Ne4 Rc8 28.Nd6 Rc7 29.c3 Rb3 30.Nc1 Rb1 31.Rb1 Rc6 32.Rb6 (32...Rb6 33.ab6+-) 1–0. pierre (1950) – hardgamer, internet, 2006.

4.Be5 f6 5.Bg3 Bb4 6.Qb2 Nc6 7.c3 Bd6 8.Qb7+/– Nge7 9.Bd6 cd6 10.e3 Rb8 11.Qa6 0-0 12.Na3 Qd7 13.Nb5 =. pierred – niceboy19478, Yahoo, 2005.

5.a3 Nbd7 6.Bb2 a5 7.b5 Bd6 8.e3 0-0 9.Be2 c6 10.c4 Rc8 11.Bg4 Ng4 12.Qd1 Nde5–/+ 13.Be5 Ne5 14.bc6 Rc6 15.d4 Nc4 16.Nf3 Nb2–+ 17.Qd2 Qc7 18.Nc3 Rc3 19.Qb2 Ba3! 20.Qb5 Rc1 21.Ke2 Rc2 22.Kf1 Rb2 23.Qd3 Rc8 24.Ra3 Qc1 25.Ne1 Rcc2 (26.Qc2 Rc2 27.Ra5 Kf8–+) 0–1. dearwish – rcastaneda (2770), net–chess.com, 2004.

5.Qb2 Nbd7 6.Bd4 =.

5.Qb2 Be7 6.e3 =.

6.Bf6+= Qf6 7.Qf6 gf6 8.c3 0-0-0 9.d4 Rg8 10.Nd2 Kb8 11.e3 Bd6 12.a3 Be6 13.g3 Ne7 14.Bd3 h5 15.c4 c6 16.c5 Bc7 17.Ngf3 Bh3 18.Ke2 Rde8 19.a4 Rh8 20.b5 Ba5 21.Rab1 Bg2 22.Rhc1 Bh3 23.Nb3 Bc7 24.a5 Bd7 25.b6 Bd8 26.a6 ba6 27.Ba6 Bf5 28.ba7 Ka7 29.Bd3 Bd3 30.Kd3 Bc7 31.Ra1 Kb7 32.Nbd2 Kc8 33.Ra7 Kd7 34.Rca1 Rb8 35.R1a3 Rhe8 36.h3 Rb5 37.Ng1 Reb8 38.Ne2 Rb2 39.Ra8 Ra8 40.Ra8 Bb8 41.Kc3 Rb7 42.Ra6 Bc7 43.Kd3 Rb2 44.Nc3 Ke6 45.Ra8 Bb8 46.Nd1 Rb7 47.Kc2 Rb5 48.Nc3 Rb4 49.Nb3 Kd7 50.Na2 Rb5 51.Kc3 Kc7 52.Nb4 Kb7 53.Ra5 Ra5 54.Na5 Kc7 55.Nac6 Nc6 56.Nd5 Kd8 57.Nf6 h4 58.gh4 Ke7 59.Nd5 Ke6 60.e4 Nd8 61.h5 f5 62.f3 Nf7 63.Ne3 fe4 64.fe4 Ng5 65.Kd3 Nh3 66.h6 Kf7 67.Kc4 Nf4 68.d5 Kg6 69.Ng4 Kf7 70.e5 Ng6 71.e6 Ke7 72.h7 Bf4 73.Kd3 (73...Bg3 74.Ke4+-) 1–0. MrkT – Yozzer, internet, 2005.

6.Bf6 Qf6 7.Qf6 gf6 8.c3 0-0-0 9.d4 Rg8 10.Nd2 Kb8 11.e3 Ne7 12.a4 Be6 13.Ngf3 h5 14.a5 Bh6 15.Rg1 Bf5 16.Be2 a6 17.Kf1 Bc2 18.Rc1 Bh7 19.Nb3 Nf5 20.h4 Rge8 21.Nc5 Nd6 22.Nd2 Bg6 23.Ke1 Ka7 24.g3 Nb5 25.Rg2 Rd6 26.Kd1 Rdd8 27.c4 dc4 28.Bc4 Nd6 29.Be2 Re7 30.g4 hg4 31.h5 Bh7+/– 32.Bg4 f5 33.Bf3 c6 34.Rc2 f4+/– 35.e4 Nb5 36.Ndb3 Kb8 37.Rh2 f5 38.e5+- Bg8 39.Rd2 Rg7 40.Kc2 Na3 41.Kc1 Re7 42.Rd1 Nb5 43.Kc2 Bc4 44.Rg2 Bf7 45.Rgg1 Na3 46.Kb2 Nb5 47.Rd2 Nc7 48.Rc2 Rh8 49.Nb7 Kb7 50.Rc6 Ka7 51.Rgc1 Ne6 52.Nc5 Nc5 53.bc5 Bg5 54.Rh1 Be6 55.Kc3 Bd7 56.Rb6 Bb5 57.h6 Reh7 58.d5 Bd8 59.d6 Rg8 60.e6 Bb6 61.ab6 Kb8 62.Kd4 Rd8 63.Bd5 Rc8 64.Rg1 f3 65.Rg7! Rg7 66.hg7 Rg8 67.d7!! a5 68.c6 Bc6 69.Bc6 Rd8 70.e7 (70...Rd7 71.Kc5 Rc7 72.e8Q Rc8 73.Qc8 Kc8 74.g8Q#) 1–0. pierre – RAY0408, ChessWorld.net, 2006.

6.Bf6 Qf6 7.Qf6 gf6 8.c3 0-0-0 9.d4 Rg8 10.Nd2 Ne7 11.e3 Bd7 12.Ne2 Ng6 13.Ng3+/– Nh4 14.Nf3 Nf3 15.gf3 f5 16.f4+- Rg6 17.Bd3 Rf6 18.Kd2 Kb8 19.a4 c6 20.h4 Kc7 21.a5 Be7 22.h5 Rg8 23.Ke2 Bf8 24.Rhg1 Be7 25.Rg2 Be6 26.Rh1 Bf8 27.Rb1 Be7 28.Rgg1 Bd7 29.Kd2 a6 30.Ne2 Rg4 31.b5?? ab5 32.Ng3 Rg8 33.Ra1 Ra8 34.Ne2 Rh6 35.Rh1 Rd6 (35...Kb8 36.Nc1+=) ½–½. pierre (2095) – Kelish (1955), internet, 2006.

6.Bf6 Qf6 7.Qf6 gf6 8.c3 0-0-0 9.d4 Rg8 10.Nd2 Bf5 11.e3 a5 12.b5 Ne7 13.Ngf3 Kb8 14.Nh4 Bd7 15.Bd3 Nc8 16.a4 Nd6 17.g3 f5 18.Ke2 Bg7 19.c4 Rge8 20.c5 Ne4 21.Nb3 b6 22.f3 bc5 23.fe4 c4 24.Bc4 dc4 25.Na5 Re4 26.Kf2 c3 27.Rhc1 Rde8 28.Ng2 f4 29.gf4 Bd4 30.ed4 Re2 31.Kf3 Bh3 32.Nc6 Kb7 33.Ne5 Rg2 34.Rc3 f6 35.Nd7 Ree2 36.Nf6 h5 37.Re3 Rgf2 38.Ke4 Bf5 39.Kf5 Re3 40.h4 Rh3 41.Ne4 Re2 42.Nc5 Kb6 43.Ne6 Ka5 44.Rc1 Ka4 45.Nc7 Ka5 46.Rc6 Rb3 47.Ra6 Kb4 48.d5 Rf2 49.d6 Rd2 50.Rc6 Ka4 51.Ke6 Rf3 52.f5 Re2 53.Kf6 Ref2 54.Rc5 Rd3 55.Rd5 Rd5 56.Nd5 Rd2 57.Nc3 Kb4 58.Ke7 Kc3 59.d7 Re2 60.Kd6 Rd2 61.Kc7 Rd5 62.b6 Rf5 63.d8Q Rf4 64.Qh8 Kd3 65.Qh7 Kc3 66.Qg7 Kd3 67.Qg6 Ke3 68.Qh6 Kf3 69.Qh5 Kg3 70.Qg5 Kf3 71.Qd5 Ke2 72.Qe6 Kf2 73.b7 Rb4 74.Qb6! (74...Rb6 75.Kb6+-) 1–0. mrkt – Ryaad Aabid, internet, 2005.

6.Bf6 Qf6 7.Qf6 gf6 8.c3 0-0-0 9.d4 Rg8 10.Nd2 Bh6 11.e3 Be6 12.Ne2 Kb8 13.Ng3 f5 14.Nh5 Ne7 15.Nf3 Rdf8 16.Nf4 Nc8 17.Ne6+- fe6 18.Ne5 Ka8 19.Rc1 f4 20.Ke2 fe3 21.fe3 Nd6 22.c4 Ne4 23.Nf3 Kb8 24.a4 Rf7 25.b5 Bf8 26.a5 Bb4 27.a6 ba6 28.ba6 Rf6 29.Rc2 c5 30.Kd1 Kc7 31.dc5 Bc5 32.Bd3+/– Rb8 33.Ke2 (33...Rg8 34.Rg1+/–) 1–0. marre – Behrooz1, GameColony.com, 2006.

6.Bf6+= Qf6 7.Qf6 gf6 8.c3 0-0-0 9.d4 Rg8 10.Nd2 Bh6 11.e3 Bf5 12.Ngf3 Ne7 13.a4 Kb8 14.Rg1 Rde8 15.a5 a6 16.b5 ab5 17.Bb5 c6 18.Be2 Nc8 19.h3 Bg6 20.Nh4 Bg5 21.Ng6 fg6 22.c4 Re7 23.cd5 cd5 24.Bf3 Rd8 25.Ke2 f5 26.Kd3 Rc7 27.Nb3 Be7 28.Rgb1 Na7 29.a6 Nc6 30.Ke2 Bb4 31.Nc5 Bc5 32.dc5 Ne5 33.Rb5 Rdd7 34.c6! Nc6 35.Bd5 Nd8 36.g4 fg4 37.hg4 Rc2 38.Kf3 Rcc7 39.g5 Rg7 40.Kf4 Rc2 41.ab7 Nb7 42.Rab1 Rcc7 43.Bb7 Rgf7 44.Ke4 Rb7 45.Rb7 Rb7 46.Rb7 Kb7 47.Kd5 Kc7 48.Ke6 Kc6 49.Kf7 (49...Kd5 50.Kg7+-) 1–0. miehnekort – almostcashed, Yahoo, 2005.

6.Bf6 Qf6 7.Qf6 gf6 8.c3 0-0-0 9.d4 Bh6 10.e3 Rhg8 11.Bd3 Bh5 12.g3 Bg6+/– 13.Bg6 fg6 14.h4 Kb8 15.a4 Ne7 16.Nf3 Nf5 17.h5 Rh8 18.Nbd2 Nd6 19.Rc1+- g5 20.g4 Rhe8 21.c4 dc4 22.Ke2 f5 23.Rhg1 f4 24.Nc4 Ne4 25.Nce5 fe3 26.fe3 Bg7 27.Rc2 Re7 28.b5 h6 29.a5 Rd5 30.Rb1 Nd6 31.Rcb2 Ka8 32.a6 Re8 33.Rb3 Kb8 34.R1b2 Bh8 35.Ng6 Bg7 36.Nfe5 Kc8 37.Rb1 Kb8 38.Rb4 Ka8 39.ab7 Kb7 40.R4b3 Kb6 41.Nd7 Kb7 42.Nc5 Kc8 43.Kf3 Nb7 44.Na6 Rd7 45.Rc1 Rf7 46.Kg2 Kd8 47.Rbc3 Nd6 48.Nc7 Re4 49.Rc6 Rd7 50.Kf3 Rf7 51.Ke2 Rc7 52.Rd6 Rd7 53.Rdc6 (53...Rb7 54.Kf3+-) 1–0. orane – mrcha, caissa.com, 2007.

6.Bf6 Qf6 7.Qf6 gf6 8.c3 0-0-0 9.d4 Bh6 10.e3 Rhg8 11.Bd3 Bh5 12.g3 Bg6+/– 13.Bg6 fg6 14.h4 Kb8 15.Ne2 Rge8 16.h5 g5 17.g4 Ne7 18.Ng3 Rf8 19.Nd2 f5 20.gf5 Nf5 21.Nf5 Rf5 22.Ke2 g4 23.Rag1 Rdf8 24.Rh2 Rg8 25.Rh4 Rgf8 26.Rg2 c6 27.Rhg4 Rh5 28.a3 Kc7 29.c4 Rh3 30.R2g3 Rh1 31.Rg1 Rh5 32.Rg8 Rhf5 33.Rf8 Bf8 34.Rg8 Kd6 35.Rh8 Rf7 36.Nf3 Be7 37.c5 Ke6 38.Ra8 a6 39.Ne5 Rf8 40.Ra7 Rb8 41.Kf3 h5 42.a4 Bf6 43.Nd3 Bg5 44.Kg3 Kd7 45.Kh3 Ke6 46.b5! ab5 47.ab5 cb5 48.Ra5 Rf8 49.Rb5 Rf7 50.Rb6 Kf5 51.Ne5 Rg7 52.Nf3 Rd7 53.Ng5 Kg5 54.Re6 Kf5 55.Re5 Kg6 56.Kh4 Kf7 57.Kh5 Kf6 58.f4 1–0. orane – fogg, caissa.com, 2007.

4.b5 a6 5.h3 Bh5 6.e3 Nf6 7.ba6 Na6 8.Bb5 c6 9.Be2 –/+.

4.b5 Nd7 5.e3 Ngf6 6.Be2 Be2 7.Ne2 a6 8.a4 Bd6 9.d4 (9.0-0 ab5 10.ab5 Ra1 11.Ba1 0-0=+) 9...0-0 10.Nd2 c6 11.c4 ab5 12.ab5 cb5 13.cb5 Qb6 14.Nc3 Rac8 (14...Bb4 15.Ba3 Bc3 16.Qc3-/+) 15.0-0 (15.Ba3 e5 16.Bd6 Qd6=) 15...Bb4-/+ 16.Qc2 Qb5! 17.Qb3 (17.Nb5 Rc2 Pinning (17...Rc2 Deflection)) 17...Qb6 18.Na4 Qd6 19.Nf3 (19.Bc3!? Ng4 20.g3 Bc3 21.Nc3-/+) 19...Ne4 20.Ne5? (better 20.Rfc1!?-/+) 20...Nd2-+ 21.Qd3 Nf1 22.Nd7 Qd7 23.Nb6 Qc7 24.Nc8 Qh2 (24...Rc8?! 25.Qf1 Bd6 26.h3-/+; 24...Qc8?! 25.Qf1 Qc2 26.Ba3 Ba3 27.Ra3-/+) 25.Kf1 Rc8 26.Qb3 Bf8 27.g3 h5 28.Ke2 h4 29.gh4 Qh4 30.Rg1 (30.Bc3 b5!-+) 30...b5! 31.Rg3?! (31.Qb5 Rc2 Deflection) 31...b4 (31...Qh5 32.Kf1-+) 32.Qd3 (32.Rg1 Qh5 33.Kd2 Qf3-+) 32...Bd6 33.Rg1 Qh5 34.Kd2 Qf3 35.Rf1 Qf5 36.Qf5 ef5 37.Ra1 Be7 38.Ra5 Rd8 (38...b3!? 39.Kd3 Rc2 40.Ra8 Kh7 41.Bc3 Rf2 42.Rb8-+) 39.Rb5 g5 40.Kd3 g4 41.Bc1 Kg7 42.Bd2 Kg6 43.Bb4 Bb4 44.Rb4 Ra8 45.Ke2 (45.Rb5!?-/+) 45...Ra2-+ 46.Kf1 f4! 47.ef4 Kf5 48.Rb5 Ke4 49.f5 f6 50.Kg2 Kd4 51.Rb4 Ke5 52.Rg4 Kf5 53.Rb4 Ke5 54.Rb8 d4 55.Kf3 Kd5 (55...Ra3!? 56.Ke2-+) 56.Rd8-/+ Kc4 57.Rd6 f5 58.Rf6 (58.Rc6 Kd5 59.Rc8-+) 58...Ra5 59.Kf4 (59.Rc6 Rc5 60.Ra6 d3-+) 59...d3 60.Rc6 Kb3 (60...Rc5 61.Rd6 Rd5 62.Rh6-+) 61.Rd6?? (61.Ke3 Ra2 62.f4=) 61...Kc2-+ 62.Ke3 (62.Rc6 Kd1 63.f3 d2-+) 62...Re5 63.Kf4 Re2 Black prepares the advance d2 64.Kf5 Rf2 65.Ke4 d2 66.Ke3 Rh2 67.Rc6 Kd1 68.Ra6 Rh3 69.Kf2 Rh8 (69...Kc2!? 70.Ra2 Kc1 71.Ra1 Kb2 72.Rf1-+) 70.Rc6 Rf8 71.Kg3 (71.Kg2 Rf4 72.Kg3 Ke1 73.Re6 Kf1 74.Kf4 d1Q-+) 71...Rf5 72.Kg4 Rf8 73.Kg3 Rf1 (better 73...Ke2!? 74.Re6 Kf1 75.Rd6-+) 74.Kg2 Rf5 75.Kg3 Ke2 76.Re6 Kd3 77.Rd6 Ke3 78.Re6 (78.Rd2 Kd2 79.Kg4-+) 78...Kd4 79.Rd6 Rd5 (79...Rd5 80.Rg6 d1Q 81.Kg2 Qc2 82.Kg3 Qg6 83.Kf2 Rf5 84.Ke2 Qg2 85.Ke1 Rf1) 0-1. Hakemi,Arman (2315) - Wojtaszek,R (2715), Titled Tuesday, 2020.

4.b5 Nf6 5.e3 a6 6.f3 Bf5 7.Ne2 Bg6 8.Nf4 Bd6 9.ba6 –/+.

4.Bc3 a6 5.g3 h6 (5...d4 6.Bb2–/+) 6.f3 Bh5 7.Qb2 b6 (better is 7...Nf6!?+=) 8.Bg7+= Rh7 9.Bh8?? (9.Bf8 Kf8 10.e3 Qf6+/–) 9...Be7?? (9...f6 10.Bh3 Qe7 11.Bf6 Nf6 12.c3–+) 10.Bg2?? (10.Bc3 Bg6+=) 10...Nf6?? (better is 10...f6–+) 11.Bf6= Bf6 12.Qb3?? Nd7 13.Qd3?? Ne5 14.Qh7+- Nc4 15.Qg8 Ke7 16.Qd8 Kd8 17.d3 Ne3 18.Bh3?? Ba1 19.Nd2? Nc2 20.Kd1 Nb4 21.Nb3 Na2?? 22.g4?? Bg7–+ 23.gh5 a5 24.Bg4 Nc3 25.Kc2 a4 26.f4 a3 27.Nf3? Ne2–+ 28.Nbd4?? Nd4 29.Kc3 Ne2 30.Kb4 Nf4 31.Rf1 Nd3 (31...Nd3 32.Kb3 a2–+) 0–1. pumpy – huskerbacker, ChessWorld.net, 2012.

4.Bc3 d4 5.Bb2 –/+.

4.e3 Nd7 5.h3 Bh5 6.a3 Ngf6 7.Be2 Bd6 8.c4 dc4 9.Bh5 =+.

4.Nf3 Bb4?? 5.Bg7 Bf3 6.ef3 +- (6.Bh8?! Be4+-).

4.Nf3 Nd7 5.c4 Ngf6 (5...Bb4?? 6.Bg7 Be7 7.Bh8+-) 6.c5 a5 =+.

5.b5 Nf6 6.h3 Bh5 7.e3 a4 8.Be2 Nbd7 9.d3 =+.

5.e3 a5 6.b5 Nbd7 7.Be2 Be2 8.Ne2 a4 9.0-0 Bd6 10.d4 (10.f4 0-0+=) 10...Nb6+= 11.Nd2 Qd7 12.Nc3 c6 (12...0-0 13.Qd1+=) 13.bc6 (13.e4 Bf4 (worse is 13...cb5 14.e5+/–) 14.e5 Nc4 15.ef6 Bd2 16.fg7 Rg8 17.bc6 Qc6+=) 13...Qc6–/+ 14.Qd1 0-0 15.Qe2 Rfc8 16.Rfc1 Nc4 17.Nc4 Qc4 18.Qd3 (18.Qc4 Rc4 (18...dc4?! 19.e4=) 19.Nb5 Be7–/+) 18...Ra6 (18...Ra5 19.f3–/+) 19.Ne2 (19.Nb5 Be7 20.Rab1 Ra5 21.Qc4 Rc4–/+ (21...dc4?! 22.Bc3 Ra6 23.Bb4 Bb4 24.Rb4=)) 19...Rb6 20.Bc3 h6 (20...Ne4 21.Be1–/+) 21.f3 Nd7 (21...Qd3 22.cd3 Rcc6 23.e4–/+) 22.Kf2 (22.e4 Qd3 23.cd3 Rcc6+=) 22...Rcc6 (22...Rbc6 23.g3–/+) 23.Rcb1 f5 (23...Rb1 24.Rb1 Qd3 25.cd3 Ba3 26.Rb7+=) 24.h3 h5 25.g3 Kf7 (25...Kh7 26.Qc4 Rc4 27.Rb6 Nb6 28.Ra2+=) 26.Ke1 Bg3!–/+ 27.Ng3 Qc3 28.Qc3 Rc3 29.Rb6 Nb6–+ 30.Kd2 Ra3! 31.Ra3 Nc4 32.Kc3 Na3 33.e4 Nb5 34.Kb2 h4 35.Ne2 fe4 36.fe4 g5 37.c3 Kg6 0–1. Puentes,Alvaro (2090) – Morales,Jhon Alexander (2320), Cali COL, 3rd Latinoamerican Cup–A, 2012.

5.e3 a5 6.Bd3 ab4 7.Ne2 Nc6 8.f3 Bh5 9.Bb5 –/+.

5.e3 Bd6 6.Be2 0-0 7.Nf3 Nbd7 8.d4 (8.0-0 e5=+) 8...a5 9.c3 (9.b5 Rc8=+) 9...e5–/+ 10.de5 Ne5 11.Nbd2 ab4 (11...Ne4 12.Ne5 Be2 13.Nf7 Rf7 14.Ne4 de4 15.Ke2=+) 12.cb4=+ Nf3 13.Bf3 (13.Nf3 Ne4=+) 13...Bf5 14.0-0 Re8 15.Nb3 (15.Rd1 c6=+) 15...Ng4 (15...Ne4 16.Nc5 Bc5 17.bc5=+) 16.Bg4 (16.Nd4 A) < 16...Bh2 17.Kh1 Bd3 18.Bg4 Bf1 A1) < 19.Kh2 Qh4 20.Kg1 Bg2=+ (< 20...Qg4 21.Kf1 Rec8 22.Qc2+=); A2) 19.Qf1=; B) 16...Bc8 17.g3 Be5=+) 16...Bg4 17.Qc3 (17.Nc5 b5=+) 17...Qg5–/+ 18.g3 (18.Nc5 Be5 19.Qd2 Bf3–/+) 18…c6 0–1. sammyo (1965) – pierred (2070), net–chess.com, 2006.

5.a3 Nbd7 6.d4 c6 7.e3 Bd6 (7...a5 8.Nc3 ab4 9.ab4 Bb4 10.Ra8 Qa8 11.f3 Bf5) 8.Be2 (8.Nc3 0-0 9.Nf3 e5 10.Nd5 cd5 11.de5 Bf3) 8...Be2 (8...dc4 9.Bc4 a5 10.Nd2 ab4 11.Ngf3 0-0) 9.Ne2 e5 (9...dc4 10.Qc4 0-0 (10...a5 11.Nbc3 ab4) 11.Nd2+= (11.Nbc3 Nb6) 11...Nb6; 9...Ng4 10.h3 Qh4 11.g3 Qh5) 10.c5 (10.cd5 cd5 11.de5 (11.Nbc3 0-0) 11...Ne5=) 10...Bc7+= 11.h3 (11.de5 Ne5 12.0-0 Ne4+=; 11.Nbc3 0-0) 11...0-0 (11...Ne4+=) 12.Nbc3 Re8 13.0-0 ed4 14.ed4 (14.Nd4 Ne5+=) 14...Ne4 15.Qc2 Qh4 16.Ne4 (16.Rae1 Re7+=) 16...Re4–/+ 17.Qd3 (17.Rae1 Rae8 18.Bc1 f5–/+) 17...Rae8 18.Ng3 Bg3 19.fg3 Qe7 20.Bc1 Nf8 21.Rb1 Ne6 22.Bb2 Nc7 23.Qf3 Re2 (23...Nb5 24.Qf2–/+) 24.Kh2 f6 25.Rf2 Rf2 26.Qf2 Qe3 27.Qf1 Nb5 28.Qf5 Qe4 29.Qd7 Re7–/+ 30.Qd8 Kf7 31.Rg1 Nd4 32.Bd4–/+ Qd4 33.h4 Qc3 34.Rd1 Qa3–+ 35.Rd4 Qe3 36.Rg4 Qe6 37.Rf4 Re8 38.Qc7 Qe7 39.Qa5 a6 0–1. Matic,Zeljko (2185) – Feletar,Darko (2400), 6th Open, Velika Gorica CRO, 2006.

5.a3 Be7 6.Nf3 a5 =+.

5.c5 a5 6.b5 Nbd7 (6...Be7 7.f3 Bf5 8.Kf2–/+) 7.d4 (7.c6 bc6 8.f3 Bf5 9.Qc6 Bc5–/+) 7...Be7 8.e3 0-0 9.Nf3 e5 (9...c6 10.Nbd2=+) 10.c6 (10.h3 Bh5=+) 10...bc6 (10...Bb4 11.Nfd2 ed4 12.Bd4 bc6 13.bc6=) 11.bc6 e4 12.Ne5 Ne5 13.de5 Ne8 14.Nc3 d4 15.ed4 Qd4 16.Be2 Be2 17.Ne2 Bb4 18.Kf1 Qd5 19.Qc2 Rd8 (19...Ra6 20.a3 Rc6 21.Qd1=+) 20.a3= Be7 (20...Bc5 21.Re1=) 21.a4 Qd3 (21...Bg5 22.h4 Bh6 23.Ba3=) 22.Qd3+= ed3 23.Nd4 Nf6 24.Nf5 Nd5= 25.Rd1 g6=+ 26.Ne7 Ne7 27.Ke1 Nc6 28.Kd2 Rd5 29.Rhe1 Nb4 30.Bc3 Na2=+ 31.Ba1 c5 32.Re4 Rb8 33.Rde1 Rdd8 34.Rc4=+ Rb4 35.Rc5 Ra4 36.Rb1 Rg4 37.g3 Re4 38.Re1 Ra4 39.Rb1 h6 40.f3 Nb4 41.Bc3= Ra2 42.Rb2 Rb2 43.Bb2 Nc2 44.Bc3 a4 45.Ba5 Rd7 46.Rc8 Kg7 47.Bc3 Nd4 48.Kd3 Nb5 (48...Nf3? 49.Ke3 Ne5 50.Be5 f6 51.Bd4+–) ½–½. pierre (2065) – Fahrudin87 (2065), internet, 2006.

5.c5 Be7 6.Nf3 =+.

6.b5 d4 7.h3 Bf5 8.d3 =+.

6.b5 d4 7.h3 Bh5 8.g4 =.

6.b5 Bd6 7.h3 Bh5 =+.

6.b5 Be7 7.d3 =+.

5.a3 Bd6 6.Be2 0-0 7.f4 –/+.

5.a3 Bd6 6.Be2 Nbd7 7.Bg4 Ng4 8.Nf3 0-0 9.d3 –/+.

5.a3 Bd6 6.Be2 Be2 7.Ne2=+ Nbd7 8.0-0 0-0 9.f4 e5 10.fe5= Be5 11.Be5 Ne5 12.Nd4 Re8 13.Nc3 c6 14.Qe1 Ng6 15.Qg3 Qb8 16.Qh3 Qc8 17.Nf5+= Qe6 18.Ne2 Ne4 19.d3+/– Nd6 20.Ned4 Qe5 21.Nd6 Qd6 22.Rf3 Re5 23.Raf1 Rf8 24.Qg3 Qb8 25.Nf5 Re6 26.h4 Qg3 27.Rg3+- Kh8 28.h5 Ne7 29.Ng7 Rh6 30.e4 de4 31.de4 Rd6 32.c4 h6 33.e5 (33...Rd2 34.Rf6+-; 33.a4 Rd2 34.a5 Rb2+-) 1–0. mrkt – siopaoman, internet, 2006.

5.b5 Bd6 6.c4 –/+.

5.a3 Nbd7 6.c4 =+.

5.b5 Bd6 6.Ne5 –/+.

5.Ne5 Bf5 =+.

5.Nf3 Bb4?? 6.Bg7 Nd7 7.Bh8 +-.

6.a3 c5 7.bc5 Bc5 8.Nd4 =+.

6.a3 c5 7.bc5 Bc5 8.e3 0-0 =+.

6.b5 Be4 7.Nc3 =+.

5.c4 Bb4 6.Bg7 Nc6 7.Bh8 +-.

5.c4 Nf6 6.a3 Bd6 =+.

5.e3 Bb4?? 6.Bg7 Nf6 7.Bh8 +-.

5.Nf3 Bb4?? 6.Bg7 Bf3 7.ef3 +- (7.Bh8?! Be4+-).

4.Nc3 e5 5.b5 Bb4 6.e3 Nh6 7.Ba3 Bd6 8.e4 d4 9.Na4 –/+.

4.c4 e6 5.cd5 ed5 6.a3 Nd7 7.Nc3 Nb6 8.d3 c6 9.h3 Bh5 10.Qe3 Qe7 11.Qd4 Qe5 12.Qh4 Bg6 13.Nf3 Qe7 14.e4 0-0-0 15.Be2 de4 16.de4 f5 17.e5 Qh4 18.Nh4 Ne7 19.Rc1 Kb8 20.f4 Ned5 21.Nd5 Nd5 22.g3 Be7 23.Nf3 Bh5 24.Kf2 h6 25.e6 Rhg8 26.b5 cb5 27.Bb5 g5 28.fg5 Bf3 29.Kf3+- hg5 30.h4 gh4+= 31.gh4 Rg4 32.Be5 Ka8 33.h5+- Bf6 34.Bc7 Rh8 35.Rc5 Nc7+/– 36.Rc7 Be5 37.Rf7 a6 38.Rf5 Rd4 39.e7 ab5 40.Rf8 (40...Rf8 41.ef8Q Ka7 42.Qc5 b6 43.Qe5+-) 1–0. guest2211 – guest1200, ICC, 2005.

4.f3 Bd7 5.a3 a5 6.e4 de4 7.fe4 e5 8.Bc4 ab4 9.Nf3 =+.

4.f3 Bf5 5.Nc3 d4 6.Ne4 e5 7.b5 Be6 8.Ba3 Ba3 9.Qa3 –/+.

4.a3 a5 5.b5 Nbd7 6.h3 Bh5 7.Nf3 a4 8.g4 Bg6 9.d3 =+.

4.a3 e6 5.e3 Bd6 6.f4 a5 7.b5 Ne4 8.g3 0-0 9.d3 –/+.

4.b5 e6 5.c4 =+.

4.c4 e6 (--> 3.Qc1 e6 4.c4 Nf6).

4.h3 Bh5 5.a3 Nbd7 6.d3 a5 7.b5 e6 8.e3 Bc5 9.Be2 –/+.

5.c4 e5–/+ 6.b5 Bd6 7.Nc3 d4 8.Na4 Nc5 (8...de3 9.de3 Bb4 10.Bc3–/+) 9.Nc5 Bc5 10.Be2 0-0 11.h3 (11.Bg4 Ng4 12.ed4 Bd4–/+) 11...Be2 12.Ne2 a6 (12...d3 13.Ng3 Qd6 14.0-0–/+) 13.a4 (13.ed4 Bd4 14.Nd4 ed4=+) 13...ab5 (13...d3 14.Ng3 Qd6 15.0-0–/+) 14.ab5 de3 15.de3 Ra1 16.Ba1 Qd3 (16...Bb4 17.Bc3 Qd6 18.Qd2 Bc3 19.Nc3=+) 17.Qb2 (17.Be5 Bb4 18.Bc3 Qc4=) 17...Ba3 (17...Re8 18.Qc3 Qb1 19.Nc1–+) 18.Qd2 Qc4 (better is 18...Qd2 19.Kd2 Ne4 20.Kc2 Rd8=+) 19.0-0? (19.Be5 Ne4 20.Qd4 Bb4 21.Kf1 Nd2 22.Kg1 Qe2 23.Qg4 Qg4 24.hg4–+) 19...Qb5 (19...Ne4 20.Qe1 Qb5 21.f4–+) 20.Nc3 Qc6 21.Qd3 Be7 22.Rb1 Ra8 23.Nb5 (23.e4 Bb4 24.Nd5 Nd5 25.ed5 Qf6–+) 23...Nd7 24.Nc3 Nc5 25.Qf5 Qe6 26.Qf3 c6 27.Ne2 (27.e4 b5–+) 27...b5 28.Ng3 Bf8 (28...e4 29.Qf4–+) 29.Bc3 Na4 30.Ba1 Nb6 31.Be5? (better is 31.Bc3–+) 31...Qe5 32.Qc6 Ra1 33.Ra1 Qa1 34.Kh2 Qa5 35.Ne4 (35.Qe8 Nc4–+) 35...b4 (35...Nc4 36.Qe8–+) 36.f4 (36.Qe8 Qa8 37.Qe5 Nc4–+) 36...Qd5 (36...Nd5 37.Qc1–+) 37.Qc2 (37.Nf6 gf6 38.Qb6 f5–+) 37...Qc4 (38.Qb1 Bc5 39.Nc5 Qc5–+) 0–1. Rocha,Sergio (2285) – Akopian,Vladimir (2590), Wch U20 Mamaia, 1991.

5.c4 e5 6.Be2 Bb4 (6...Be2 7.Ne2 Bb4 8.0-0–/+) 7.cd5 (7.Bg4 Ng4 8.cd5 Qh4–/+) 7...Be2 8.Ne2 Nc5 (8...Nd5 9.0-0–/+) 9.0-0 Nd3 10.Qc2 Qd5 11.Nbc3 (11.f4 Bd6–/+) 11...Qc4 12.Rab1 (12.Nc1 Nb2 13.Qb2 Rd8–/+) 12...a5 13.Qa4 (13.a3 Bc5–/+ (13...Nb2?! 14.Qb2 Bd6 15.d4=)) 13...c6–+ 14.Ba1 0-0 15.Qb3 Qb3 16.ab3 Rfd8 17.Rfd1 Ba3 18.Na2 Nd7 19.Bc3 f6 20.b4 a4 21.Nec1 Bc1 22.Nc1 Nb6 23.Kf1 a3 24.Nd3 Rd3 25.Ke2 Rdd8 26.Ra1 a2 27.d3 Nd5 28.Be1 Ra3 29.g3 Kf7 30.Rdc1 Ke6 31.Rc2 Rda8 32.e4 Nc7 33.Rc3? Nb5 34.Ra3 Nd4 (35.Kd2 Ra3–+; 34...Na3?! 35.Ra2 Ra4 36.f4=) 0–1. CHED – pierre (2035), internet, 2006.

5.c4 e6 6.c5 (6.f3 Bf5 7.a3 a5=+) 6...Be7 (6...a5 7.a3=+) 7.Nf3 (7.c6 bc6 8.Qc6 Bb4 9.Bf6 Qf6–/+ (9...gf6?! 10.Qa4 Bf5 11.Qb4=+)) 7...Bf3 (7...a5 8.a3=+) 8.gf3=+ e5 (8...0-0 9.a3=+) 9.d3 (9.Rg1 a5 10.Rg7 ab4=) 9...0-0 (9...Rg8 10.d4 ed4 11.Bd4=) 10.Nd2 a5 11.a3 ab4 12.ab4 Ra1 13.Qa1 e4 (better 13...d4 14.ed4 Nd5=+) 14.de4 1–0. jaddwarrior (1990) – Meitner, ChessWorld.net, 2015.

5.Be2 e5 6.a3 a5 7.b5 Bd6 8.Nc3 c6 9.Bg4 Ng4 10.Qd1 Ngf6 11.Nge2 a4 12.0-0 0-0 13.f3 Qb6 Black prepares the advance d4 14.Ng3 (14.bc6 bc6 15.Rb1 Qc7=+) 14...d4-/+ 15.Nce4 Ne4 (15...de3!? 16.de3 Bc5 (16...Qb5?! 17.Nd6 Qb2 18.Qd2=) 17.Nc5 Qc5 (worse 17...Nc5 18.Be5 Ncd7 19.Bd4 Qb5 20.Rb1+=) 18.bc6 Qe3 19.Kh1 bc6=+) 16.fe4= g6 17.Qg4 de3 18.de3 Rfd8 19.bc6 Qc6 (19...bc6 20.Rad1 Bf8 21.Bc1=+) 20.Rad1= Bf8 21.Rd3 Qc7 22.Nh5 Be7 (22...Qc2 23.Rd7 Bg7 24.Rdf7+-) 23.h3 Ra6 24.Rd5 Rb6 25.Ba1 Re6 26.Rd2 Rd6 27.Rdf2 f6 28.h4 Qc4 29.Ng3 Qe6 30.Qe6 (30.Qf3 Rc6-+) 30...Re6 31.Rd2 Nb6 32.Rd8 Bd8 33.Ne2 Nc4 34.Nc3 Na3 35.Na4 Nc2 36.Nc5 Rc6 37.Nb7 Bb6 38.Rb1 Ne3 39.h5 (39.Kh2 f5 40.Kg3 Bd4 41.Bd4 ed4-+) 39...gh5 40.Kh2 Ng4 41.Kg3 Bf2 42.Kf3 Kg7 43.Ke2 Be3 44.Kd3 Bf4 45.Bc3 Nf2 46.Ke2 Ne4 (46...Rc3?! 47.Kf2 h4 48.Rd1-+) 47.Be1 f5 48.Rb2 Bg3 49.Nd8 Rc1 50.Ba5 (50.Bg3 Ng3 51.Kd3 f4-+) 50…h4 0-1. marekt (2230) - forsetinn (2470), gameknot.com, 2016.

5.Be2 e5 6.a3 Bd6 7.c4 dc4 8.Qc4 Be6 9.Qc2 a5 10.Nc3 ab4 11.ab4 Ra1 12.Ba1 Bb4 13.Nf3 0-0 14.0-0 Qe7 15.d4 Bc3 (15...ed4 16.Nd4 h6 17.Ne6 Qe6 18.Nb5=) 16.Bc3= e4 17.Nd2 Bd5 18.Ra1 Rc8 19.Qb1 c5 20.dc5 Nc5 21.h3 Nfd7 22.Qb2 Qg5 23.Bd4 Qg6 (23...Ne6 24.Ra5 Ndc5 25.Bc5 Nc5 26.Qb4=) 24.Qc3= b6 25.Nf1 Bb7 26.Ra7 Nd3 27.Qa3 N7c5 28.Ng3 Bd5 29.Bh5 Qg5 30.Bg4 Rd8 31.Qc3 Rb8? (better 31...Be6!? 32.Ne4 Ne4 33.Qd3 Nc5+=) 32.Nh5+- Ne6? (32...Be6 33.Bg7 Bg4 34.hg4 Rd8+-) 33.Bf6+- Qg6 34.Bg7! Ng7 35.Nf6 Kh8 36.Nd5 b5?? (36...Qd6 37.Rf7 Ne5+-) 37.Bc8 Qg5 (37...Ne5 38.Qc7 Nc6+-) 38.Rf7 Kg8 39.Re7 Ne1 (39...Nc5 40.Qc5 h5+-) 40.Nf6 Kh8 41.Kf1 (41.Qe1?! Qf6 42.Rc7 b4=) 41...Qg2 42.Ke1 Qh1 (42...Qg1 43.Ke2 Qd1 44.Kd1 Rb6 45.Nd5 Rf6 46.Qf6 Kg8 47.Qg7) 43.Kd2 Qa1 (43...Qc1 44.Kc1 b4 45.Qc4 Rc8 46.Qc8 Ne8 47.Qe8) 44.Qa1 Rc8 45.Re8! Ne8 (45...Ne8 46.Ne8 Mate attack) 46.Ne8 (46.Ne8 Rc3 47.Qc3 Kg8 48.Qg7) 1–0. marekt (2160) – gluv51 (2035), gameknot.com, 2015.

5.Be2 e5 6.a3 Be2 7.Ne2 a5 8.b5=+.

5.h3 Bh5 6.c4 e5 =+.

5.h3 Bh5 6.Be2 e5 7.g4 Bg6 8.a3 a5 9.b5 h5 10.g5 Ne4 11.h4 Bd6 12.Nf3 0-0 13.d3 Nec5 14.Nc3 Nb6 15.Qd2 e4 16.de4 de4 (16...Be4?! 17.Ne4 Ne4 18.Qd4+=) 17.Nd4 Qe7 18.Rd1 (18.a4 f5–/+) 18...f5 (18...Nca4 19.Ba1 Ba3 20.Na4 Na4 21.0-0–/+) 19.Qc1 f4 0–1. Fournier,Frederic – Bendig,Frank, corr B4/07/33, 2007.

5.h3 Bh5 6.Nf3 e6 7.a3 Bd6 8.Be2 a5 9.b5 –/+.

5.Be5 Bb4 6.Qb2 Nc6 7.Bf6 Qf6 (< 7...gf6 8.a3 Bd6 9.Qb7+/–) 8.Qf6 gf6 =.

5.Be5= Nc6 6.Bb5 Bb4 7.Qb2 Be7 8.Bc6 bc6 9.Qb7 0-0 (9...Kd7 10.Nc3=) 10.Qc6 Qd7 11.Qd7 Nd7 12.Bg3 Bf6 13.Nc3 Rfe8 14.Nge2 (< 14.Bc7 Rac8 15.Ba5 d4=) 14...Be2 15.Ke2 c6 16.Rab1 Bc3 17.dc3 Nb6 18.Rb3 Re7 19.Bd6 Re4 20.Rb4 Re6 21.Bc7 Nc4 22.Rhb1 Ree8 23.Rb7 Na3 24.R1b3 Nc4 25.Kd3 f6 26.a4 h5 27.Kd4 Nd2 28.Kc5 (28.Rb2 Re4 29.Kd3 Nc4+=) 28...Nb3 (28...Re6 29.Rb8 Rb8 30.Rb8 Kh7 31.Kd4+=) 29.cb3+/– Re6 30.a5 f5 31.a6 Re7 (better is 31...g5!?+/–) 32.Kc6+- Re6 33.Kb5 (33.Kd5?! Ra6 34.c4 Ra2+/–) 33...Rg6 34.Bb8 (34...Rg2 35.Ba7 Rf2 36.Bd4+-) 1–0. marekt – Aumonde, schemingmind.com, 2005.

5.a3 a5 6.b5 Bd6 7.Be2 0-0 8.f4 c6 9.Nf3 cb5 10.Nc3 (10.Bb5 Bf3 11.gf3 Na6=+) 10...b4–/+ 11.Nb5 Bc5 12.ab4 Bb4 13.0-0 Nc6 14.c3 Bc5 15.Ba3 b6 16.Qe1 Qe7 17.Qg3 Ba3 (17...Bf5 18.Bc5 bc5 19.Ne5 Ne5 20.fe5–+) 18.Ra3 Na7 (18...Bf3 19.Rf3 Ne4 20.Qe1–/+) 19.Ra2 Nb5 20.Bb5 Bf3 21.Qf3 Ne4 22.Rb1. pierre – ramiroski, internet, 2006.

5.a3 c5 6.Bb5 Nc6 =+.

5.a3 c5 6.bc5 Bc5 7.d4 Bd6 8.c4 dc4 9.Bc4 Qc7 10.h3 Bf5 11.Nd2 Nbd7 12.Ngf3 Rc8 13.0-0 Qb6 14.Bc3 0-0 15.Qb2 Ne4 (15...Qb2 16.Bb2 Nb6 17.Bb3+=) 16.Ne4= Be4 17.Nd2 Bg6 18.Rfc1 Qb2 19.Bb2 Nb6 20.Bb3 Bd3 21.f3 a5 22.Kf2 Rc1 23.Rc1 Rc8 24.Rc8 Nc8 25.Ne4 Be4 26.fe4 b5 27.e5 Bc7 28.Ke2 Ne7 29.Kd3 Kf8 30.Ke4 Ke8 31.h4 h5 32.Bd1 g6 33.g4 hg4 34.Bg4 Nd5 35.Kd3 Kd7 36.h5 gh5 37.Bh5 Ke7 38.Bc1 Nb6 39.e4 Nc4? (better is 39...f6 40.ef6 Kf6 41.e5 Kf5+=) 40.a4!+- Ke8 (40...ba4 41.Kc4 Deflection (41.Bg5 Decoy)) 41.ab5 Nb6 42.Ba3 Bd8 43.Bf3 (43.d5!? Be7 44.Bc1 Nd7+-) 43...Be7 44.Bb2 f6 45.d5 ed5 (45...fe5 46.Be5 ed5 47.ed5+-) 46.ed5 (46.ef6!? de4 47.Ke4 Bc5+-) 46...fe5 47.Be5 Bc5 48.Bc7 a4 49.Kc3 Kd7 (49...Nc8 50.Bg4 Nd6 51.b6+-) 50.Be5 (50.Bb6!? Bb6 51.Kb4 Kd6+-) 50...Bd6+/– 51.Bd4 Kc7 52.Kd3 Nd7 53.Bd1 a3 54.Bb3 Bc5 55.Bc3 Kb6 56.Kc4 Kc7 (56...Bd6 57.Ba4+/–) 57.Ba2 Bd6 58.Bd4 Nb6 59.Kd3 Na4 60.Ke4 Bb4 1–0. Ivanets,Vladimir (2230) – Didy,Kaplan, RUS–ch Seniors, 2009.

5.a3 Bd6 6.c4 =+.

5.a3 Bd6 6.Be2 0-0 7.f4 Nbd7 8.Nf3 c5 9.bc5 Bc5 10.0-0 Rc8 11.Ra2 Qc7 12.Qe1 Ne4 (12...Qf4 13.Qh4 Be3 14.de3 Qe3 15.Qf2 Qf2 16.Kf2 Rc2 17.Rc1 Rc1 18.Bc1–+) 13.Qh4 Bf5 14.Nd4 Bg6 15.Bg4 Rce8 16.d3 Nef6 17.Bf3 a6 18.Nd2 e5 19.fe5 Re5 20.Re1 Re7 21.Nf1 Ne5 22.a4 Rfe8 23.a5 Qd7 24.Ba3 (24.Nb3 Bd6=+) 24...Qa4–/+ 25.Rea1 Nf3 26.gf3 Bd4 (26...Qa5? 27.Nb3 Be3 28.Ne3+-) 27.Qd4 ½–½. pierre – amro nahas, internet, 2006.

5.a3 Nbd7 6.c4 dc4 7.Bc4 Nb6 8.Be2 Be2 9.Ne2 Bd6 10.f4 0-0 11.0-0 Rc8 12.Bd4 c5 13.bc5 Na4 14.Nbc3 Nc5 15.Qb1 Rc6 16.Rd1 Rb6 17.Qa2 Qe7 18.Bc5 Bc5 19.d4 Bd6 20.e4 Bb8 21.Rac1 Ra6 The isolani on a3 becomes a target 22.a4 Rd8 23.h3 h6 (23...Bc7 24.e5 Nd5 25.Nd5 Rd5 26.Nc3+=) 24.Rd3 (24.e5 Nd5 25.Nd5 Rd5+/-) 24...Rc6 25.Rcd1 Bc7 26.Kh1 (26.e5!? Nd5 27.Nd5 Rd5 28.Nc3+=) 26...Ba5 27.d5 ed5 28.e5 Ne4 29.Ne4 de4 30.Rd8 Bd8 31.Qd5 Bb6 32.Qe4 Qe6 33.f5 (better 33.Rd5!?=) 33...Qc4-/+ 34.Qf3 Qa4 35.Nf4 Rc3! 36.Qg4?? (36.Qc3 Qd1 Deflection (36...Qd1 Decoy)) 36...Rg3-+ 37.Qe2 White prepares the advance e6 (37.Rd8 Bd8 38.Qg3 Qa1 39.Kh2 Qe5 40.Nd3 Qf5 41.Ne1-+) 37...Qf4 38.e6 fe6 39.fe6 (39.Qe6 Kh7 40.Qd6 Qf2-+) 39...Re3 40.Qa2 (40.Qf1 Qe4 41.Kh2 Qe5 42.Kh1 Bc7-+) 40...Rh3! 41.gh3 Qf3 42.Kh2 Bc7 (42...Qd1?! 43.e7 Kh7 44.Qg8 Kg8 45.e8Q Kh7 46.Qe4 g6 47.Qe7 Kg8 48.Qe8 Kg7 49.Qe7 Kh8 50.Qf8 Kh7 51.Qe7 Kg8 52.Qe8 Kg7 53.Qe7 Kg8=) 43.Kg1 Qd1 44.Kg2 Qh5 45.e7 Kh8 46.Qe6 Qe8 47.Kf3 a5 48.Ke4 (48.Qe4 b5 49.Qe6 a4-+) 48...a4 49.Kd3 (49.Kf3 a3 50.Kg2 Bd8 51.ed8Q Qd8-+) 49...a3 50.Kc2 (50.Kc3 Bf4 51.h4-+) 50...Bd8! 51.ed8Q (51.ed8Q Qd8 Combination; 51.ed8R Qd8 Combination; 51.ed8B Qc6 Double attack (51...Qe6 Pinning; 51...Qe6 Deflection; 51...Qc6 Decoy); 51.ed8N Qd8 Combination) 51...Qd8 52.h4 (52.Qb3 Qa5 53.Kb1-+) 52...Qf6 53.Qe8 Kh7 54.h5 Qc6 (54...Qc6 55.Qc6 bc6-+) 0-1. Healey,M (2140) - Postny,E (2630), 17th Nancy Rapid (3), 2019.

5.a3 Nbd7 6.Be2 Bd6 7.Bg4 Ng4 8.Nf3 e5 9.h3 =+.

5.a3 Nbd7 6.Be2 Be2 7.Ne2 c5 8.bc5 Bc5 9.Nbc3 =+.

5.a3 Nbd7 6.h3 Bf5 (6...Bh5 7.Be2+=) 7.Nf3 h6 (7...a5 8.ba5 Be4 9.a6 ba6 10.Be2+=) 8.Bd3 (8.Be2 c5+=) 8...Bd3 9.cd3 a5 (9...c5 10.bc5 Bc5 11.Bc3+=) 10.Bf6 (10.b5 Bd6+=) 10...Qf6–/+ 11.Nc3 c6 (11...Bd6 12.0-0–/+) 12.0-0 Bd6 13.b5 0-0 14.bc6 bc6 15.Qc2 Rac8 (15...Rfb8 16.d4+=) 16.d4 e5 (16...c5 17.Rfb1+=) 17.de5 Ne5 18.Ne5 Qe5 19.f4 Qe6 20.Na4 (20.Qa4 Rfe8=) 20...Qe7 (20...c5 21.Rfb1+=) 21.Qc3 Rfd8 (21...Rc7 A) 22.Qa5? Ra7 (22...Ba3?! 23.Ra3 Qa3 24.Qc7 Qa4 25.f5=) 23.Qc3 Ra4–+; B) 22.Rfb1=) 22.Nb6 (22.Qa5? Ra8 (22...Ba3 23.Nb6 Bb4 24.Nc8 Rc8 25.Qa6+/–) 23.Qc3 Ra4 24.Qc6 Ra3 25.Ra3 Ba3–+) 22...Rc7 23.Na4 (23.Ra2 Rb8 24.Rb2 Rcb7= (24...Ba3? 25.Nd5 Bb2 26.Ne7 Re7 27.Qa5+-)) 23...h5 (23...Rb8 24.Rfb1 Rb5 25.Nb6 Rb1 26.Rb1 Ba3 27.Qa5+=) 24.Nb2= (24.Qa5? Ra7 25.Qc3 Ra4 26.Qc6 Ra3 27.Ra3 Ba3–+) 24...c5 (24...Rb8 25.Nd3=) 25.Qa5 c4 26.Na4 (26.Qc3 Rb7=) 26...Ra7+= 27.Qb5 Qc7 (27...Ba3 28.Rfb1+=) 28.Nc3= Bc5 Attacks the isolani on a3 29.Rab1 (29.Qb1!? Qe7 30.Nb5+=) 29...Ra3+= 30.Kh2 h4 31.Qb7 (31.Rfc1 Ra5 32.Qb7 Qd6+=) 31...Qb7 32.Rb7 Rb3 33.Rb5 (33.Rb3 cb3 34.Rb1 d4 35.ed4 Rd4 36.Rb3 Bd6–/+ (36...Rd2?! 37.Ne4 Rd5 38.g4=)) 33...Rb5 34.Nb5 d4 35.Nd4 Bd4 36.ed4 Rd4 37.Rf2 Kh7 (37...f5 38.g3–/+) 38.g3 Kg6 (38...hg3 39.Kg3 Kg6 40.Re2–/+) 39.gh4 (39.f5 Kf6–/+) 39...Kf5 40.h5 (40.Kg3 g6–+) 40...Rf4 41.Re2 Kg5 42.Re5 Rf5 (42...f5 43.Re7 Kh6 44.Rd7–/+) 43.Re4 Rd5 44.Rc4 Rd2 45.Kg3 Rd3 46.Kg2 Kh5 47.Rc7 Kg6 48.h4 f6 49.Ra7 Kh6 50.Ra8 (50.Rf7 Kh5–/+) 50...Kh5 51.Rg8 (51.Ra4 g6–+) 51...g6–+ 52.Rh8 Kg4 53.Rh6 (53.Kf2 Rf3 54.Ke2 g5–+) 53...Rd2 54.Kg1 Kf5 (54...g5 55.hg5 fg5 56.Kf1–+) 55.Rh7 (55.Rh8 Rb2–+) 55...g5 (55...Rb2 56.Rh6–+) 56.hg5 (56.h5 Kg4–+) 56...Kg5 (56...fg5 57.Kf1–+) 57.Kf1 Rb2 (57...f5 58.Ke1 Rb2 59.Rg7 Kf4 60.Ra7–+) 58.Re7 (58.Rg7 Kf4–+) 58...Kf4 (58...f5 59.Rg7 Kf4 60.Ra7–+) 59.Ra7 (59.Rf7 f5–+) 59...f5 60.Rf7 (60.Ke1 Kf3–+) 60...Ke4 (60...Kg4 61.Rc7–+) 61.Rc7 Kf3 62.Rc3 Ke4 (62...Kg4 63.Rc8–+) 63.Rc7 Kf3 64.Rc3 Kg4 65.Ra3 Rc2 66.Rb3 f4 67.Rd3 Kh4 (67...Rb2 68.Rc3–+) 68.Rf3 Kg4 69.Rd3 Rb2 ½–½. marekt (2225) – objorn (2465), gameknot.com, 2016.

5.a3 Be7 6.Be2 0-0 7.Nf3 c6 (7...a5 8.b5 Nbd7 9.0-0 c6 10.Nc3 e5 11.Qd1 Qb6 12.h3 Bf5=+; 7...c5 8.bc5 Bc5 9.h3 Bf3 10.Bf3 Nc6 11.0-0 Rc8 12.Nc3 a6=+; 7...Nbd7 8.0-0 a5 9.b5 c6 10.Nc3 e5 11.Qd1 Qb6 12.bc6 Qc6=+) 8.Nc3 b5 9.a4 Bf3 10.gf3 ba4 11.Ra4 Nbd7 12.Ba3 Re8=+.

5.a3 Be7 6.Be2 0-0 7.Bg4 Ng4=+.

5.a3 Be7 6.Be2 a5 7.Bg4 (7.b5 0-0 8.Nf3 Nbd7 9.0-0 c6 10.Nc3 e5 11.Qd1 Bd6 12.Ng5 Bf5=+; 7.ba5 Be2 8.Ne2 Ra5 9.0-0 0-0 10.d3 Qd6 11.Nd2 Nbd7 12.c4 Rfa8=+) 7...Ng4 8.Bg7 Rg8 9.Bb2 Nh6 10.g3 ab4 11.ab4 Ra1 12.Ba1 Bb4=.

5.a3 Be7 6.Be2 Be2 7.Ne2 c6 (7...0-0 8.0-0 a5 9.b5 c6 10.Nbc3 c5 11.d3 Qb6 12.Qd2 Rd8=; 7...a5 8.b5 c6 9.Nbc3 cb5 10.Nb5 0-0 11.0-0 Nc6 12.Rb1 Qd7=; 7...Nbd7 8.0-0 c5 9.bc5 Nc5 10.Bf6 Bf6 11.d4 Nd7 12.Nd2 Rc8=; 7...Qd7 8.c4 dc4 9.Qc4 b5 10.Qf4 a5 11.0-0 ab4 12.ab4 Ra1=+; 7...0-0 8.0-0=+) 8.c4 (8.0-0 a5 9.ba5 Qa5 10.Bf6 Bf6 11.d4 b5 12.Rd1 Nd7=+; 8.0-0 Nbd7=+) 8...0-0 (8...a5 9.c5 ab4 10.ab4 Na6 11.Qc3 b6 12.d4 0-0=+; 8...a5 9.cd5 cd5 10.Nbc3=+) 9.0-0 a5 (9...Nbd7 10.cd5 cd5 11.Bf6 Bf6 12.Nbc3=+) 10.c5 Na6 (10...ab4 11.ab4 Na6 12.Bc3 Qc7=+) 11.Qc3 (11.Bc3 ab4 12.ab4 Qc7=+; 11.Bc3 Qd7=+) 11...ab4 (11...Re8 12.d4=) 12.ab4 b6 (12...Qb8 13.Nd4=) 13.d4= Ne4 (13...bc5 14.bc5 Ne4 15.Qe1=) 14.Qe1=+ Qb8 (14...bc5 15.bc5 Qb8 16.Bc3=) 15.f3= Nf6 16.Bc3 Nc7 17.Nd2 (17.Na3 Ra6=) 17...Nb5=+ 18.Bb2 (18.Ra8 Qa8 19.Qb1 Nc3 20.Nc3 Qb7=+) 18...Ra1 19.Qa1 Qb7 20.Qa4 (20.Qd1 Ra8=+) 20...Ra8 21.Qb3 Nc7 (21...g6 22.Ra1=+) 22.Nc1 (22.Qc2 Nh5=) 22...Rb8 (22...Nd7 23.Nd3=) 23.Bc3 (23.Nd3 bc5 24.dc5 Ra8=) 23...Nd7 24.Qc2 Nb5 25.Bb2 e5 (25...Bg5 26.f4 Bf6 27.Nd3=) 26.Nd3= ed4 27.ed4 Bf6 (27...bc5 28.dc5 (28.bc5? Bf6–+) 28...Re8 29.Re1=) 28.Nb3=+ Ra8 (28...bc5 29.dc5 (29.bc5?? Na3 30.Ba3 Qb3 31.Qb3 Rb3–+; worse 29.Ndc5 Nc5 30.dc5 Bb2 31.Qb2 Qe7=+) 29...Re8 30.Bf6 Nf6 31.Qf2=) 29.Re1= Nc7 (29...Qc7 30.Qf2=) 30.cb6 Qb6 31.Rc1 Nb8 32.Kh1 (32.Nbc5 Nba6 33.Nd7 Bd4 34.Kh1 Qa7=; 32.Nbc5 h6=) 32...Ne6= 33.Qc3 (33.Re1 Nd7=+ (33...Bd4?? 34.Nd4 Nc7 35.Qc1+-)) 33...h6 (33...Ra2 34.Re1=) 34.f4 (34.Ndc5 Nc7=) 34...Ra4 (34...Qb5!?=+) 35.f5+= Nc7 (35...Nf4 36.Ndc5 Ne2 37.Na4=) 36.Nbc5 Ra8 (36...Ra2 37.Ne5+=) 37.Ne5 (37.Re1 Qb5+=) 37...Nb5 38.Qe1 (38.Qg3 Qc7+=) 38...Ra2 39.Ng4 Bg5?? (better 39...Qd8 40.Nf6 Qf6 41.Qe8 Kh7+=; better 39...Qd8 40.Nf6 Qf6 41.Qe8 Kh7 42.Qb8 Qf5= (42...Rb2?? 43.Nd7 Qd6 44.Qe8+-)) 40.Qe8+- Kh7 41.Qf7 Qd8?? (better 41...Qc7 42.Qg6 Kg8+-; 41...Qc7 42.Qg6 Kh8+-) 42.Ne6 (42.Ne6 Qe7 43.Nf8 Qf8 44.Qf8 Rb2 45.f6 gf6 46.Qf7 Kh8 47.h4+-; 42.Ne6 Qe7 43.Nf8 (43.Ng5?! Qg5 44.Qg6 Qg6 45.fg6 Kg6 46.Ne5 Kf6=) 43...Qf8 44.Qf8 Bc1 45.f6+- (45.Qb8?! Bb2 46.h4 Nd4+-)) 1–0. Lapshun,Yury (2460) – Hahn,Anna (2235), ch–USA, San Diego USA (6), 2004.

5.a3 Be7 6.Ne2 A) 6...a5 A1) 7.b5 0-0 (7...Bd6 8.Ng3 e5 9.c4 Nbd7 10.d4 ed4 11.Bd4 0-0 12.cd5 Nd5=; 7...Nbd7 8.f3 Bf5 9.g4 Bg6 10.h4 h6 11.Nf4 Bd6 12.Ng6 fg6=) 8.Ng3 Bd6 9.c4 Nbd7 10.f3 Bh5 11.cd5 ed5 12.Nh5 Nh5=+; A2) 7.ba5 0-0 8.Ng3 Ra5 9.Bc3 Ra7 10.h3 Bh5 11.Nh5 Nh5 12.Be2 Nf6=+; B) 6...0-0 7.Ng3 Bd6 (7...a5 8.h3 Bh5 9.Nh5 Nh5 10.Be2 Nf6 11.b5 Nbd7 12.0-0 a4=; 7...Nh5 8.Bd3 a5 9.ba5 Ra5 10.Bc3 Ra7 11.Qb2 f6 12.Nf1 e5=) 8.f3 Bh5 9.Be2 Bg6 10.f4 c5 11.bc5 Bc5 12.f5 ef5=+; C) 6...Nbd7 7.f3 (7.c4 a5 8.f3 Bf5 9.cd5 ed5 10.g4 Bd3 11.g5 Nh5 12.Ng3 Ng3=+) 7...Bh5 (7...Bf5 8.g4 Bg6 9.h4 h6 10.Nf4 Nf8 11.Ng6 Ng6 12.c4 a5=) 8.Nf4 Bd6 9.Be2 Bg6 10.0-0 a5 11.b5 Bf5 12.d3 c6=+.

5.e3 e6 6.a3 =+.

5.a3 =+.

5.Nf3 e6 6.a3 h6 7.c4 a5 8.b5 dc4 9.Qc4 =+.

5.g4 Be4 6.f3 Bg6 =+.

4.Qa4 c6 5.Qc2-/+.

4.Qa4 Qd7 5.b5 Nf6 6.Qc4 e6 7.Nf3?? a6 (7...Bf3 8.gf3 a6 9.ba6 Ra6 10.e3=+) 8.Bf6= gf6?? (better 8...Bf3 9.Be5 ab5 10.Qc7 Bc6=+) 9.Qg4+- ab5 10.Nc3 b4 11.Ne4 Be7 (11...Qe7 12.Ng3+-) 12.Qf4 (12.Qg7 Rf8+-) 12...Nc6 (12...Qd8 13.e3+-) 13.Nf6 Bf6 14.Qf6 Rg8 15.g3 Ne7 16.Bg2 b3 (16...Nd5 17.Qh6 f6 18.e4+-) 17.0-0 (17.Ne5 Qb5 18.Qf7 Kd8 19.Qe6 ba2+-) 17...ba2 (17...Nd5 18.Qb2 ba2 19.Ra2 Ra2 20.Qa2+-) 18.Qb2 (18.Ne5!? Qc8 19.Qf7 Kd8+-) 18...h5 (18...c6 19.Ra2 Ra2 20.Qa2+-) 19.Ra2 Ra2 20.Qa2 h4 (20...c6 21.Rb1 Qc8 22.Qa7+-) 21.Nh4 Nc8 (21...b6 22.Ra1+-) 22.Qb2 (22.Bb7 Nb6+-) 22...b6 (22...c6 23.Ra1+-) 23.d3 f5 (23...Qd6 24.Ra1+-) 24.Qc3 (24.Nf3 Qg7 25.Ne5 Kd8+-) 24...Qh7 (24...c5 25.Nf3+-) 25.Qc6 (better 25.Qe5 Qf7+-) 25...Kd8 (25...Qd7 26.Rc1 Qc6 27.Bc6 Ke7 28.Nf3+-) 26.Qe6 Rh8 (26...Re8 27.Qd5 Nd6+-) 27.Bb7 Nd6 28.e4 (28.Ra1 Qd7 29.Ra8 Nc8 30.Qf6 Ke8 31.Bc8 Qc8 32.Qe6 Kf8 33.Rc8 Kg7 34.Qg6) 28...f4 (28...Nb7 29.Ra1 Na5 30.Qd5 Kc8 31.Qf5 Kd8 32.Qf6 Kc8 33.f4+-) 29.e5 (29.Ra1 Qd7 30.Ra8 Nc8 31.Qf6 Ke8 32.Bc8 Qc8 33.Qe6 Kf8 34.Rc8 Kg7 35.Qg6) 29...Rg8 (29...Nb7 30.Ra1 Na5+-) 30.ed6 (30.Ra1 Rg3 31.fg3 Qd7 32.Ra8 Nc8 33.Qg8 Qe8 34.Rc8 Kd7 35.Qe8) 30...c5 (30...cd6 31.Rc1 Rg3 32.hg3 Qb7 33.Qg8 Ke7 34.Re1 Qe4 35.Re4 Kd7 36.Qe8 Kc7 37.Re7) 31.Qc8 1-0. ClayPigeons (2160) - skutzner (2265), Rated Bullet game, lichess.org, 2020.

4.Qa4 Nd7 5.b5 (5.Qb5 e5=+) 5...e6 (5...Nb6 6.Qc2-/+) 6.Qc4=+ Ngf6 7.e3 Bd6 8.Nf3 Nb6 9.Bf6 (9.Qc2 Nbd5=+) 9...Qf6-/+ 10.Qc3 Bf3 (10...e5 11.Be2-/+) 11.gf3 (11.Qf6!? gf6 12.gf3=) 11...Be5 12.d4 Bd6 (12...Qf3 13.Rg1 Bh2 14.Bg2=+) 13.Be2 (better 13.f4=+) 13...a5 (13...e5 14.Nd2 ed4 15.Qd4 Qd4 16.ed4-/+) 14.a3 (14.ba6 ba6 15.Qc6 Ke7=) 14...Na4 (14...e5!?-/+) 15.Qb3 Nb6 16.Nd2 0-0 17.Ne4 Qe7 18.Bd3 (18.f4 a4 19.Qd3 f5 20.Nd6 cd6=+) 18...Nd5 19.Ke2 c6 (19...a4 20.Qb2=+) 20.h4 (20.Nd6 Qd6 21.bc6 bc6=) 20...cb5=+ 21.Bb5 Rac8 22.Bd3 (22.Nd6 Nc3 23.Kd3 Qd6 24.Bc4=+) 22...Nf6 (22...Rc7!?=+) 23.Nd6= Qd6 24.h5 (24.Qb7 Rb8 25.Qa6 Rb2 26.Kf1 Qc7=) 24...h6 (24...b6 25.h6 g6 26.Rac1=+) 25.Rag1 (25.Qb7 Rb8 26.Qa6 Rb2 27.Ke1 Qc7=) 25...Kh8 26.Rg3 (26.Rb1 Nd5 27.Rhc1 b6=) 26...Rc6 (26...Rc7 27.Rhg1 Nh5 28.Rg4=+) 27.Rhg1= (27.Qb7 Rb8 28.Qb8 Qb8-+) 27...Nh5 28.Rg4 (28.Rh3 Nf6=+) 28...Rfc8 (28...b6 29.a4=+) 29.f4 (29.Qb7 Kg8 30.Qb2 Rb6=+) 29...Rc3 (29...Qd7-/+) 30.Qb1?? (30.Qb7 Qb8 31.Qf7 Rd3 32.Qh5 (32.Kd3?? Qb5 33.Kd2 Qb2 34.Ke1 Rc1) 32...Ra3 33.Rg6 Ra2 34.Kf3 Qb7 35.Kg3+=) 30...Qa3-+ 31.f5 (better 31.Qb7!? Qa2 32.Kf3 Qd5 33.Qd5 ed5 34.Ba6-/+) 31...Rb3 32.Qd1 Rb2 33.Kf3 Qa2 34.R1g2 (34.R4g2 Rc3 35.Rh1 Nf6 36.fe6 Qd5 37.Kg3 Rd3 38.Qd3 Ne4 39.Qe4 Qe4 40.ef7 Qg6 41.Kh2 Qf7-+) 34...Nf6 35.Rg7 (35.Rh4 Qd5 36.Kg3 ef5 37.Rf4-+) 35...Nh5 (better 35...Qd5 36.e4 Qd4 37.Rf7 ef5 38.Bc2 fe4 39.Kf4 Nd5 40.Kf5-+) 36.fe6?? (better 36.Rf7 ef5 37.Rf5=+) 36...Ng7-+ 37.Rg7 (37.e7-+) 37...Qa3 (better 37...Rf2 38.Kg3 Rg2 39.Kf4 Kg7-+) 38.Qg1 (38.Rh7 Kg8 39.Qg1 Kf8 40.Rf7 Ke8 41.Qg8 Qf8 42.Qf8) 38…Qf8 (38...Qf8 39.Rh7) 0-1. ClayPigeons (2200) - gravec (2000), Rated Bullet game, lichess.org, 2019.

4.b5 Nf6 5.Qc2 Qd7 6.Qc4 e6?? (6...c6 7.a4=) 7.e3?? (7.Bf6 Be2 8.Qe2 gf6+-) 7...Bd6?? (7...Be7 8.Be5=) 8.Nf3 (8.Bf6 gf6 9.Qg4 Ke7+-) 8...0-0?? (8...Qd8 9.Ne5 Bf5 10.d3=) 9.Be2?? (9.Bf6!? Bf5 10.Bc3 Rc8+-) 9...c6?? (9...Qe7 10.Bf6 Qf6 11.Nc3=) 10.a4?? (better 10.Bf6 e5 11.Bh4+-) 10...cb5=+ 11.ab5 Rc8 12.Qb3 a6 13.Nc3 ab5?? (better 13...e5=+) 14.Ra8+- b4 15.Nb5 Qc6 16.0-0 Bf3 17.gf3 (17.Bf3?! Qb5 18.Bf6 gf6+-) 17...Bh2 (17...Rd8 18.Rc1 Qd7 19.Bf6 gf6 20.Qd3 Bh2 21.Kh2 Qd3 22.Bd3+-) 18.Kh2 Nh5 (18...Nbd7 19.Rc8 Qc8 20.Qb4 Qb8 21.Qd6+-) 19.Qb4 (better 19.Rc1 Rf8 20.Qb4 Qe8+-) 19...Qe8 (19...Na6 20.Rc8 Qc8 21.Qd4 Qb8 22.Nd6+-) 20.Nd6 Qe7 21.Ba3 Qh4 22.Qh4 Rc6 23.Rb8 (23.Qd8) 23...Rc8 24.Rc8 1-0. ClayPigeons (2090) - sicilyaa (2140), Rated Bullet game, lichess.org, 2020.

4.Qc2 a5 5.b5 c6 (5...Nf6 6.e4 e5 7.Bc4 Bd6 8.Ne2 0-0=; 5...Qd5 6.Nc3 Qd7 7.e4 a4 8.a3 Be6+=; 5...Qd7 6.Qc4 Be6 7.Qa4 Qd6 8.e4 Qb4+=) 6.Qc4 Nf6 7.e3 e6 8.f3 Bh5 =.

4.Qc2 b5?? 5.Qe4+- Na6 6.Qg4 (6.Qc6 Bd7 7.Qa6 e6+-) 6...Nf6 (6...Nb4 7.Bg7 Nh6 8.Bh6 Bh6 9.Kd1+-) 7.Qf3 (better is 7.Bf6!? gf6 8.Qh5+-) 7...Nb4 8.Na3 a6 9.Bc3 (9.g3 c5+-) 9...Nbd5+/– 10.Nc2 e6 11.e4 Nc3 12.dc3 (12.Qc3?! Ne4 13.Qe3 f5=+) 12...Bc5 13.Rd1 Qe7 14.e5 Nd5 15.Nd4 (better is 15.Ne2+/–) 15...b4? (better is 15...Bd4 16.Rd4 Qg5+=) 16.Bc4 0-0 17.Bd5 ed5 18.Nc6 Qh4 19.cb4 Bb4 20.Nb4 Qb4 21.Rd2 Rfe8 22.Qd1 Qe4 23.Kf1 Re5 24.Nf3 Qc4 25.Kg1 Rf5 26.h3 c6 27.Rc2 Qb5?? 28.Nd4+- (28...Rf2 29.Nb5 Rc2 30.Qc2 cb5 31.Qc6+-) 1–0. Gross,Wilhelm – Merten,Rainer, xxi, 1991.

4.Qc2 Qd5 5.Nc3 Qd6 (5...Qd7 6.Ne4=+) 6.a3 (6.Qe4 Bc8 (6...Qb4? 7.Qg4 Nd7 8.Rb1+-) 7.Qc4 Be6=) 6...Nf6 7.e3 e5 8.Bc4 Be7 (8...Nc6 9.Nge2=) 9.Nge2 (better 9.Nb5 Qc6 10.f3+/- (10.Be5?! Qg2 11.Nc7 Kf8 12.Bf6 Qh1 13.Be7 Ke7 14.Na8 Nd7+=)) 9...0-0?? (9...a6 10.0-0=) 10.Ng3?? (better 10.Nb5 Qc6 11.Nc7+-) 10...Nbd7 (10...Qc6 11.Nce4 b5 12.Bd3 Qc2 13.Bc2+=) 11.Qb3 (11.Nce4 Ne4 12.Qe4 Be6+=) 11...Nb6= 12.Be2 (12.Nb5 Qd7 13.Be5 Be6 14.Be6 Qb5 15.Bc7 fe6 16.Qe6 Rf7 17.Bb6 ab6=+ (worse 17...Qb6 18.Qb6 ab6 19.Ke2+=)) 12...Be6 (12...Rad8 13.Rd1=+) 13.Qc2= c6 14.d3 (14.Rd1 a5 15.d4 ed4 16.Rd4 Qc7=) 14...Rfd8 (14...a5 15.Nce4 Ne4 16.Ne4=) 15.Rc1 (15.Nce4 Ne4 16.Ne4 Qc7=) 15...Nbd5 (15...a5!? 16.b5 cb5 17.Nb5 Qd7=+) 16.Nce4 Qd7 (16...Qc7 17.Nf6 Bf6 18.Ne4=) 17.0-0 (17.Be5 a5 18.Nc5 Qc8+/-) 17...Ne4 (better 17...Qc7!?=) 18.de4+/- (worse 18.Ne4 Qc7=) 18...Nb6 19.f3 (better 19.Be5!? Bd6 20.Rfd1+/-) 19...f6 20.Bc4?? (20.Rfd1 Qe8=) 20...Bf8 (better 20...Nc4 21.Rfd1 Qc7-+) 21.Be6 Qe6 22.Rfd1 g6 (22...Rd1 23.Rd1 Nc4 24.Qb3=+) 23.Rd2 (23.Rd3 Rd3 24.Qd3 a5=+) 23...Rd2 24.Qd2 Be7 (24...Nc4 25.Qe2 b5 26.f4-/+) 25.Rd1 (25.f4 Nc4 26.Qc3 Nb2 27.Qb2 Rd8=) 25...Rd8 26.Qc2 Rd1 27.Qd1 Kf7 28.Qc2 (28.Nf1 c5=) 28...Qc4 (28...Qa2 29.Qe2-/+) 29.Qc4 (better 29.Qd1!?=+) 29...Nc4-+ 30.Bc1 b5 31.Kf2 (31.Ne2 a5 32.ba5 Na5-+) 31...Ke6 (31...c5!? 32.bc5 Bc5 33.Ne2-+) 32.Ne2 Bd6 (32...c5!? 33.Nc3 cb4 34.ab4 Bb4 35.Nb5 Kd7-+) 33.Nc3-/+ Bc7 34.g3 (34.Nb1 a5-/+) 34...Bb6 (34...a5 35.Na2-/+) 35.Ke2 a5 36.Kd3 ab4 37.ab4 Bc7 38.Na2 (38.Nb1 h5=+) 38...Bd6 39.f4 f5 40.ef5 gf5 41.fe5 (better 41.e4!?=+) 41...Ne5-+ (worse 41...Be5 42.e4=+) 42.Ke2 Nc4 (42...Kd5 43.Bb2 Kc4 44.Be5 Be5 45.Nc1-+) 43.Kf3 (43.Bd2 c5-/+) 43...Be5 (43...c5 44.bc5 Bc5 45.Nc3-/+) 44.g4? (better 44.e4=+) 44...fg4-+ 45.Kg4 Kd5 (better 45...Bh2 46.Kg5 Bg1-+) 46.Kf5? (better 46.h3-+) 46...Bg7?? (46...Nd6 47.Kg4 Kc4 48.e4-+) 47.h4?? (better 47.e4 Kd4 48.Bf4=+) 47...Nd6-+ 48.Kg4 Ne4?? (48...Kc4!? 49.e4 Kb3 50.Bf4 Ne4 51.Kf3-+) 49.Kf3 (49.Kf5 Ng3 50.Kg4 Ne2-/+) 49...Nc3 (49...h5!? 50.Kf4-+) 50.Nc3 Bc3 51.e4 Ke6 52.Bf4 (52.Ba3!?-/+) 52...Bb4-+ 53.Kg4? (better 53.h5-+) 53…Bc5 0-1. ClayPigeons (2215) - grl77 (2285), Rated Bullet game, lichess.org, 2021.

4.Qc2 e6 5.Qc4 Nf6 6.e3 Bf5 7.d4 Nc6 8.a3 a6 (8...Bd6 9.Nf3=) 9.Nd2 Bd6 10.Ngf3 0-0 11.Be2 Ne4 12.0-0 Nd2 13.Nd2 Qg5 14.Nf3 Qg6 15.Ne5 Ne5 (better 15...Be5!? 16.de5 Rad8=) 16.de5+/- Be7 17.Qc7 Bg5 18.f4 (18.Bf3 Be4 19.Be4 Qe4+/-) 18...Bh4 (18...Rac8!? 19.Qb6 Rc2=) 19.Bf3+/- (19.Qb7?? Be4 20.Qe4 Qe4-+) 19...Rac8 (better 19...Be4!? 20.Rac1 a5+/-) 20.Qb7+- Rc2 (20...a5 21.Bd4+- (worse 21.ba5 Rb8=+)) 21.Bd4 h6 (21...a5 22.Rac1+-) 22.Qa6 (22.Rfc1 Rc1 23.Rc1 Bd3+-) 22...Bd3 23.Rfc1?? (better 23.Qb7 Bf1 24.Be4 (worse 24.Kf1 Qd3 25.Kg1 Bf2 26.Kh1 Be3 27.Be3 Qe3-+; 24.Rf1?! Qd3 25.g3 Qd2+/-) 24...Rg2 25.Bg2 Bg2 26.Qg2+-) 23...Rc1 24.Rc1 Ba6 25.Rd1 (25.a4 Rc8 26.Rc8 Bc8-+) 25...Rc8 (better 25...Qc2 26.g3 Bb7 27.Rf1 Bf3 28.Rf3-+) 26.g3 (26.Bc5 Qc2 27.g3 Bd8-+) 26...Be7 (26...Bg3 27.Bc5 Bf4 28.Kh1 Be5 29.Rg1-+) 27.Kg2 (27.e4-+) 27...Qc2 28.Kh3 Bc4 (better 28...Qf2 29.Bc5 Qf3 30.Be7 Qh5 31.Bh4 Qd1 32.g4 Qf1 33.Kg3 Bb7 34.Bf6 Qg2 35.Kh4 Qh2) 29.Bg4 (29.Ra1 Qf2 30.Bc5 Rc5 31.Bc6 Rc6 32.Ra2 Bf1 33.Kg4 h5 34.Kh5 Qf3 35.g4 Qh3) 29...h5! 30.Bf3 (30.Bh5 Be2 Double attack (30...Be2 Decoy)) 30...h4! 31.Re1 (31.gh4 Qf2 Double attack (31...Qf2 Decoy)) 31...hg3 (31...Qf2 32.e4 Qe1 33.Bc5 Bf1 34.Kg4 Bc5 35.bc5-+) 32.Kg3 Qd2 (32...Qg6 33.Bg4 Qh7 34.Kf3-+) 33.Rg1 (33.Rd1 Bh4! 34.Kh4 Qh2 35.Kg5 Qg3 36.Bg4 Be2 37.Rg1 Qg1 38.f5 Qg4) 33...Be2 34.Rg2 (34.Be4 Rc1 35.Rg2 Qe1 36.Rf2 Bh4 37.Kh4 Qf2 38.Kh3 Rg1 39.Bh7 Kh7 40.b5 Bg4) 34…Qe1 (34...Qe1 35.Rf2 Bh4 36.Kh3 Bf2 37.Bc3 Qf1 38.Bg2 Bg4 39.Kg4 Qg2 40.Kh5 Qg6) 0-1. ClayPigeons (2155) - testouverture (2160), Rated Bullet game, lichess.org, 2020.

4.h3 Be6 5.e3 c6 (5...Nc6 6.a3-/+) 6.Qc2=+ a5 7.Bc4 Bc4 8.Qc4 b5 9.Qc2 (9.Qe4 ab4 10.Qb4 e6=+) 9...ab4 10.Nf3 e6 11.0-0 Nf6 0-1. Manawydan – marekt, ChessWorld.net, 2021.

5.f3 Bh5 6.e4 Qd6 7.Nc4+= Qb4?? (better is 7...Qd7+=) 8.Ba3+– Qb5 (8...Qa3 9.Na3 c6 10.Rb1+–) 9.Nd6! ed6 (9...cd6 10.Bb5) 10.Bb5 (10...c6 11.Be2+–) 1–0. halocan (1615) – thotares (1665), internet, 2007.

5.f3 Bh5 6.e4 Qd7 7.Bc4 Nc6 8.b5+=.

5.f3 Bh5 6.e4 Qd7 7.Nc4 f6 8.d4 e5 9.a3 ed4 10.Ne2 Nc6 (10...b5 11.Na5+=) 11.b5 Ne5 12.Nd4 Nh6 13.Ne5 (13.Qa4 a6+/-) 13...fe5 14.Nb3 Bd6 15.Na5 Rb8 16.Nc4 Nf7 (16...Qe7 17.Qa4 0-0 18.Nd6 (18.Qa7?! Bc5 19.b6 cb6=+) 18...cd6 19.Qa7+/-) 17.h4 h6 18.Qd5 Qe7 19.Rc1 0-0 20.Nd6 cd6 21.Bc4 Kh8 22.a4 a6 23.b6 Rbc8 24.Bb3 Rc1 25.Bc1 Bg6 (25...Qd7 26.a5+/-) 26.Ba3 Bh7 27.Qe6 (27.Qe6 Qd8 28.a5+/-) 1-0. objorn (2480) - phildo (1950), gameknot.com, 2016.

5.Rb1 Bf5!? 6.Nc4 Qb4=.

5.Rb1 f6 6.Nc4= Qd7 7.Nf3 e5 8.a3 Nc6 9.b5 Nd8 (9...Bf3 10.ef3 Nd4 11.Bd4 Qd4 12.Rb3=) 10.e3 (10.e4 Bc5=) 10...Be7 11.Rc1 (11.d4 e4 12.h3 Bh5=) 11...Nh6 (11...e4 12.h3 Bh5 13.g4=+) 12.h3= Bf3 (12...Bf5 13.d4 e4 14.Nfd2=) 13.Qf3+= c6 14.a4 0-0 (14...cb5? 15.Ne5 Qf5 16.Bb5 Kf8 17.e4 Qf3 18.Nf3+- (worse 18.gf3 fe5 19.Be5 Ne6-/+)) 15.Na5 Rc8 16.bc6 Nc6 17.Nc6 bc6 18.Bc4 Kh8 19.0-0 (19.Bc3 Rb8+=) 19...Rb8 (19...Qd2 20.Bc3 Qd7 21.Rfd1=) 20.Rc2 Rfd8 (20...Rb4 21.a5=) 21.d4+= ed4 22.Bd4 (22.ed4!? Nf5 23.Re1+=) 22...c5= 23.Bc3 Qa4 24.Qe2 Nf5 25.Ra2 Qd7 26.Qh5 (26.Rfa1 Rb7=) 26...Nd6 27.Bd3 (27.Qc5? Rbc8 (27...Nc4?! 28.Qc4 Rbc8 29.Qb3=) 28.Qa7 Rc7-+) 27...f5 28.Rd1 Rf8 (28...c4 29.Bc2=) 29.Ra6 (29.Be5 Rb4=) 29...Qe8 (29...Bf6 30.Ba1=) 30.Qf3+= Bf6 31.Bf6 Rf6 32.Ra7 c4 33.Bc2 h6 34.Qf4 Qc6 35.Ra5 Pawn f5, live or die! 35...Rbf8 36.Rad5 (36.Rda1 Ne4+=) 36...Ne4 37.Rd8 Kh7 38.Rf8 Rf8 39.Rd4 Kg8 40.f3 (40.f3 Ng5 41.Rc4+/-; 40.Be4?! fe4 41.Qe5 c3=) 1-0. stelianploscaru (2490) - marekt (2370), gameknot.com, 2022.

5.Qc2 Qb4 6.Nc4 Nf6 (6...Bd7 7.Be5 b5 8.Ne3=) 7.Rb1 Qc5 8.e4 (8.Bf6 ef6 9.Qe4 Be6 10.Qb7 Bd5 11.Qc8 Ke7=) 8...Nc6 (8...Qc6 9.f3 Bc8 10.Bc3=) 9.Ba3 Qg5 10.Ne3 (10.Rb7 Nd4 11.Qb1 Bc8=+) 10...Nd8 (10...Bc8 11.Bb5 Bd7 12.Nf3=) 11.h4 (11.Qc7 Rc8 12.Qg3 Qg6 13.Bb5 Bd7 14.Bd7 Kd7 15.Qg6 hg6+=) 11...Qg6 12.Bd3 e5 13.Bf8 Kf8 (13...Rf8 14.Qc7 a6 15.Qe5 Be6+/-) 14.Qc7+/- Rc8 (14...Qh5 A) 15.Ng4?! Qg4 (worse 15...Ng4 16.f3+-) 16.Qe5 Qg2 17.Qd6 Kg8=; B) 15.Be2 Kg8 16.Nf5+-) 15.Qe5 Nd7 16.Qf4 h5 17.f3 Be6 18.Bb5 Kg8 (18...Nf6!?+/-) 19.d4+- Nb6 20.Kf2 (20.Rb2 Na8+-) 20...Ba2+/- 21.Ra1 Qe6 22.Ne2 a6 23.Bd3 (23.Nf5 ab5 24.Qg5 g6 25.Ne7 Kg7+-) 23...Bc4+/- 24.Nc4 Nc4 25.Rab1 Qe7 26.Qg5 Qg5 27.hg5 b5 (27...Na5 28.d5+/-) 28.Rhc1+- Ne6 29.f4 Kh7 30.Bc4 Rc4 31.Rc4 bc4 32.Rb7 Ra8 (better 32...Rc8!?+/-) 33.Rf7+- a5 34.d5 (34.Re7 Nf8 35.Rc7 a4 36.Rc4 a3+-) 34...Nc5 35.Ke3 a4 36.f5 Kg8 37.g6 1-0. rcm06 (2235) - marekt (2205), gameknot.com, 2016.

5.Qc2 Bd7 6.Nc4 (6.Qc4 Na6 7.b5 Be6=) 6...Qb4 7.a3 (7.Be5 b5 8.Ne3 c6=) 7...Qa4=+ 8.Qa4 Ba4 9.e3 Nf6 10.Be2 Nbd7 11.Nf3 e6 12.0-0 Be7 13.d4 0-0 14.Nce5 c5 15.Nd7 Nd7 16.Rfc1 Rfd8 17.Bd3 (17.dc5 Nc5 18.Rab1 Bc6-/+) 17...cd4 18.Nd4 e5 19.Nf5 Bf8 20.Be4 (20.Bc2 Bc2 21.Rc2 Nc5-/+) 20...Nc5 21.Bf3? (better 21.Bc2!?-/+) 21…Nd3-+ 0-1. TheWelshKnight – marekt, ChessWorld.net, 2022.

5.Nc3 c6 (5...Bd7 6.a4 c6 7.g3 a5 8.ab5 cb5=+; 5...a6 6.a4 e5 7.ab5 Bb4 8.Nf3 Bd6=) 6.a4 Bd7 7.g3 a5 8.ab5 cb5 =+.

5.g3 a5 (5...c6 6.Bg2 a5 7.ba5 f6 8.Be4 e6=+; 5...Qd5 6.f3 Bd7 7.a4 a6 8.Nc3 Qb7=+) 6.Bg2 c6 7.ba5 f6 8.Be4 e6 –/+.

5.h3 Bd7 (5...Bc8 6.a4 c6 7.g4 a5 8.ab5 cb5=+; 5...Bf5 6.Nc3 Bd7 7.a4 c6 8.g4 a5=+; 5...Be6 6.a4 c6 7.Nc3 Bd7 8.g3 a5=+) 6.a4 c6 7.Nf3 Nf6 8.g3 a5 –/+.

6.Nc3 Qb6 7.h3 Bd7 8.g4 e5 =+.

9.Nf3 Bb4 10.Nb5 Bb5 11.Bg7+/– Nf6 12.Bh8 Ne4 13.Bc4 Bc6 14.Qb2 a5 +/–.

9.Nf3 Bb4 10.Nb5 Bb5 11.Bg7+/– Nf6 12.Bh8 Ne4 13.Bc4 Bc6 14.Be2 (14.Be5+/– Ng5+/–) 14...a5 +/–.

9.Nf3 Bb4 10.Nb5 f6 11.Qc4 Nc6 12.Ra6 Nge7 13.Bc3 Bc3 14.Nd6 Kf8 15.dc3 +/–.

10.ba5 Ra5 11.Ra5 Qa5 12.Ne5 (12.Be2 Nf6 13.0-0 Bc6 14.Qc2 b4 15.Nb1–/+) 12...Qc7 (12...Qd8 13.Qb1 Na6 14.Ba1 Nb4 15.d3=+) 13.Nd7 Qd7 14.Be2–/+ f6 15.Qc2 –/+.

10.Ra5 Ra5 11.ba5 Qa5 12.Be2 Nf6 13.0-0 Bc6 14.Qc2–/+ b4 15.Nb1 –/+.

10.d3 Bb4 11.dc4 Nf6 12.cb5 (12.Qe3 bc4 13.Bc4 Qc7 14.Nd2 0-0 15.h3–/+; 12.Nd2 bc4 13.Bc4 0-0 14.Qc2 Qc7 15.0-0–/+; 12.Qc2 Bc6 13.Nd2 Bc3 14.Qc3 b4 15.Qe3–/+; 12.e5 Ne4 13.Be2 Nc5 14.Qe3 Na4 15.Ra2–/+) 12...Ne4 13.Bd3 (13.Nd2 Nd2 14.Qd2–/+ Qf6 15.Bd3–/+) 13...Nc5 14.Qe3 a4 15.0-0 =+.

10.d3 Bc6 (1) 11.ba5 b4 12.Nd1 (12.Nb1 c3 13.Nc3 bc3 14.Bc3 Nf6 15.Be2–/+; 12.Na2 cd3 13.Qc4 Ra5 14.Bd3 Nf6 15.Nb4–/+; 12.Ne2 c3 13.Nc3 bc3 14.Bc3 Nf6 15.Be2–/+; 12.Ne5 bc3 13.Qc3 f6 14.Nc4 Na6 15.Ba3–/+) 12...c3 13.Nc3 bc3 14.Bc3–/+ Nf6 15.Be2–/+; (2) 11.Ra5 Ra5 12.ba5 b4 13.Nd1 c3 14.Nc3–/+ bc3 15.Bc3 –/+; (3) 11.dc4 Bb4 12.cb5 Be4 13.Be2 Nf6 14.0-0 = Bb7 15.Rd1 =+.

10.d3 cd3 (1) 11.ba5 b4 (11...Bc6 12.Qe3 b4 13.Nb1 Ra5 14.Ra5 Qa5 15.Bd3=+) 12.Nb1 (12.Nd1 Bb5 13.Nd4 Ba6 14.Qd2 e5 15.Nb3–/+; 12.Na2 Bc6 13.Qc4 Ra5 14.Bd3 Nf6 15.Bf6=+) 12...Bb5 13.Nd4 Ba6 14.Nd2=+ (14.Nc6 Qd6 15.Ne5–/+) 14...Ne7 15.Nc4=+; (2) 11.Ra5 Ra5 12.ba5 b4 13.Nb1 Na6 14.Ne5=+ Nf6 15.Nd7=+; (3) 11.Bd3 Bb4 12.0-0 Nf6 13.Nb5 0-0 14.Rd1=+ a4 15.Qb1 =.

10.Ne5 a4 11.Ba3 (11.d3 Bb4 12.dc4 Nf6 13.Nd3 Ba5 14.Nc5–+) 11...Bd6 12.Nd7 Qd7 13.d3 cd3 14.Bd3 =+.

10.Ne5 ab4? (A) 11.Nd7? Ra1 (11...Nd7?! 12.Nb5 Rc8 13.Bc4=) 12.Ba1 Qd7–+ (12...Nd7?! 13.Nb5 c3 14.dc3=; 12...bc3 13.Nf8 cd2 14.Qd2 Qd2 15.Kd2 Kf8 16.Be2–/+); (B) 11.Ra8 bc3 12.Nd7 Kd7 13.Qc3+– (13.dc3?! Qc7+–).

10.d3 cd3 11.Bd3 (11.e5 Nd5 12.Nd5 ed5 13.Bd3 Bb4 14.Bc3 Qe7 15.0-0 Bc3–/+) 11...Bb4 12.0-0 Bc3 13.Bc3 a6 14.Rd1 Qc7= 15.Qb2 Qf4 =.

10.e5 Nd5 11.d3 (11.Nd4 Qb6 12.Nd5 ed5 13.Qc3 Na6 14.Nc2 Bf5 15.Ne3–+) 11...cd3 12.Nd5 ed5 13.Bd3 Bb4 14.Bc3 Qe7–/+ 15.0-0 –/+.

11.e5 Nd5 12.dc4 bc4 13.Bc4 Nb6 14.Be2 0-0 15.0-0 (1) 15...Qe7 16.Qf4 (16.Qe3 Rc8 17.Rfc1 Bc6 18.Nd4 Bb7 19.Ndb5=+; 16.Qc2 Rc8 17.Rfb1 Bc3 18.Bc3 Nd5 19.Rb3=+) 16...a5 17.Qd4 Bc5 18.Qg4 Bc6 19.Ne4 =+; (2) 15...Qc7 16.Ne4 (16.Na2 Bc5 17.Qb1 Be7 18.Nc3 Rc8 19.Rc1=+; 16.Qb1 h6 17.Nb5 Bb5 18.Bb5 Qb7 19.Rd1=+; 16.Qe3 Rd8 17.Rfc1 Bc6 18.Nb5 Qb7 19.Ba3=+; 16.Nb5 Qc1 17.Rfc1 Bb5 18.Bb5 Nd5 19.Nd4=+) 16...Rc8 17.Qb1 Ba4 18.Bd4 Qe7 19.Neg5 =; (3) 15...a5 16.Rd1 (16.Qc2 Bc6 17.Ne4 Qe7 18.Rfd1 a4 19.Nfg5=+; 16.Bd3 Bc6 17.Rd1 N8d7 18.Qf4 Qe7 19.Nd4=+; 16.Na2 Be7 17.Bd3 Bc6 18.Rd1 Qc8 19.Nd4=+) 16...Qe7 17.Qe3 Bc3 18.Qc3 Na4 19.Ra4 =+; (4) 15...Bc6 16.Qe3 (16.Rd1 Qe7 17.Nd4 Rc8 18.Nc6 Nc6 19.Ba6=+; 16.Ba3 a5 17.Rd1 N8d7 18.Nb5 Rc8 19.Qb1–/+; 16.Qf4 Qe7 17.Nd4 Rd8 18.Rfd1 a5 19.Qg3=+; 16.Re1 Qe7 17.Rd1 Rc8 18.Qf4 Bb7 19.Na2=+) 16...a5 17.Rfd1 N8d7 18.Nd4 Bb7 19.Ndb5 =+.

11.e5 Nd5 12.dc4 bc4 13.Bc4 Nb6 14.Be2 0-0 15.Ba3 (1) 15...a5 16.0-0 (16.Bb4 ab4 17.Ra8 Na8 18.Ne4 Bc6 19.Qb1=+) 16...Qe7 17.Bb4 ab4 18.Ra8 Na8 19.Ne4 =+; (2) 15...Ba3 16.Ra3 (16.Qa3 f6 17.ef6 Qf6 18.Ne4 Qf4 19.Bd3=+) 16...f6 17.0-0 fe5 18.Ne5 Nc6 19.Qe3 =+; (3) 15...Nc6 16.Bb4 (16.0-0 Ba3 17.Qa3 f6 18.ef6 Qf6 19.Ne4=+) 16...Nb4 17.0-0 N6d5 18.Qd2 a5 19.Nd5 =+; (4) 15...Qe7 16.0-0 (16.Qb2 a5 17.0-0 Nc6 18.Rfd1 Rfb8 19.Bb4–/+; 16.Bb4 Qb4 17.Rb1 Qa5 18.Qd2 Bc6 19.Ne4–/+) 16...Rc8 17.Qb2 Bc3 18.Qc3 Rc3 19.Be7 =+.

11.e5 Nd5 12.dc4 bc4 13.Bc4 Nb6 14.Be2 0-0 15.Qc2 (1) 15...Qc7 16.Ng5 (16.Rc1 Nc6 17.Bd3 Ne5 18.Bh7 Kh8 19.Be4–/+) 16...g6 17.0-0 Rc8 18.Bf3 Qe5 19.Ba8 =; (2) 15...Qe7 16.0-0 (16.Bd3 h6 17.0-0 Rc8 18.Rfc1 a5 19.Qe2=+) 16...Rc8 17.Rfb1 Bc3 18.Bc3 Nd5 19.Rb3 =+; (3) 15...Nd5 16.Bd3 Nc3 17.Bc3 Bc3 18.Qc3 Bc6 19.Bc2 =+; (4) 15...Bc6 16.0-0 Qe7 17.Rfb1 Rc8 18.Qd3 a5 19.Ne4 –/+.

11.e5 Nd5 12.dc4 bc4 13.Bc4 Nb6 14.Be2 Na4 15.0-0 Nb2 16.Nb5 (16.Qb2 a5 17.Rfc1 Bc6 18.Na4 0-0 19.Nc5=+) 16...Nc6 17.Qb2 a5 18.Rfd1 0-0 19.Bd3 =+.

11.e5 Nd5 12.dc4 bc4 13.Bc4 Nb6 14.Be2 Bc6 15.0-0 (1) 15...Qe7 16.Na2 (16.Nd4 0-0 17.Rd1 Rc8 18.Nc6 Nc6 19.Ba6=+; 16.Ba3 Ba3 17.Ra3 0-0 18.Qa1 Rc8 19.Nb5=+; 16.Rd1 0-0 17.Nd4 Rc8 18.Nc6 Nc6 19.Ba6=+; 16.Qf4 0-0 17.Nd4 Rd8 18.Rfd1 a5 19.Qg3=+) 16...Bc5 17.Bd4 Bd4 18.Nd4 Bd5 19.Nc3 =+; (2) 15...a5 16.Rd1 (16.Qc2 N8d7 17.Ne4 Bd5 18.Nd6 Bd6 19.ed6=+; 16.Na2 Be7 17.Nd4 Bb7 18.Bb5 N6d7 19.Rd1=+) 16...Qe7 17.Qe3 N8d7 18.Nd4 Bb7 19.Ndb5 =+; (3) 15...0-0 16.Qf4 (16.Qe3 a5 17.Rfd1 N8d7 18.Nd4 Bb7 19.Ndb5=+; 16.Rd1 Qe7 17.Nd4 Rc8 18.Nc6 Nc6 19.Ba6=+; 16.Ba3 a5 17.Rd1 N8d7 18.Nb5 Rc8 19.Qb1–/+; 16.Na2 Be7 17.Rd1 Qc7 18.Nc3 Rc8 19.Ba3=+) 16...Qe7 17.Nd4 Bb7 18.Ne4 Nd5 19.Qg3 =+.

11.e5 Nd5 12.dc4 bc4 13.Bc4 Nb6 14.Be2 Bc6 15.Ba3 (1) 15...Qe7 16.0-0 (16.Bb4 Qb4 17.0-0 N8d7 18.Na2 Qc5 19.Nb4=+) 16...N8d7 17.Nb5 Bb5 18.Bb5 Ba3 19.Ra3 =+; (2) 15...a5 16.0-0 N8d7 17.Nb5 Bf3 18.Bf3 Rc8 19.Qf4 =+; (3) 15...Bf3 16.Bf3 Bc3 17.Qc3 Nd5 18.Bd5 ed5 19.0-0 =; (4) 15...Ba3 16.Qa3 (16.Ra3 0-0 17.0-0 Qe7 18.Qa1 Rc8 19.Rb1–/+) 16...Qe7 17.Qa5 0-0 18.0-0 Rc8 19.Rfd1 =+.

11.e5 Nd5 12.dc4 bc4 13.Bc4 Nb6 14.Be2 Bc6 15.Qc2 0-0 (15...Qe7 16.0-0 0-0 17.Rfd1 Rc8 18.Qd3 N8d7 19.Nb5=+; 15...a5 16.0-0 N8d7 17.Ne4 Bd5 18.Nd6 Kf8 19.Ne4=+) 16.Bd3 (16.0-0 Qe7 17.Rfb1 Rc8 18.Qd3 a5 19.Ne4–/+) 16...Bf3 17.Bh7 Kh8 18.gf3 Nd5 19.Be4 –/+.

11.e5 Nd5 12.dc4 bc4 13.Bc4 Nb6 14.Be2 Qc7 15.0-0 (1) 15...Bc3 16.Bc3 Nd5 17.Ra3 0-0 18.Qd2 Rc8 19.Rc1 =; (2) 15...a5 16.Qb1 (16.Ne4 Qc1 17.Rfc1 Nd5 18.Bd3 Nf4 19.Bf1=+; 16.Rd1 0-0 17.Qb1 Rc8 18.Ng5 g6 19.Nge4=) 16...Nc6 17.Rc1 Qd8 18.Bd3 Rb8 19.Qc2 =; (3) 15...Nd5 16.Nd5 (16.Ne4 Qc1 17.Rfc1 a5 18.Nd4 a4 19.Nc2–/+) 16...Qc1 17.Nf6 gf6 18.Rfc1 f5 19.Rc7 =; (4) 15...0-0 16.Qb1 (16.Na2 Bc5 17.Qb1 Be7 18.Nc3 Rc8 19.Rc1=+; 16.Nb5 Qc1 17.Rfc1 Bb5 18.Bb5 a5 19.Rc7=+; 16.Rd1 Rc8 17.Ne4 Qc1 18.Bc1 Ba4 19.Rf1=+; 16.Bd3 Rc8 17.Ne4 Qc1 18.Rfc1 Rc1 19.Bc1–/+) 16...h6 17.Nb5 Bb5 18.Bb5 Qb7 19.Rd1 =+.

11.e5 Nd5 12.dc4 bc4 13.Bc4 Nb6 14.Be2 Qe7=+ 15.0-0 (A1) 15...Bc6 16.Na2 (16.Ba3 Ba3 17.Ra3 0-0 18.Rd1 Rc8 19.Qa1=+; 16.Rd1 0-0 17.Nd4 Rc8 18.Nc6 Nc6 19.Ba6=+; 16.Qf4 0-0 17.Nd4 Rd8 18.Rfd1 a5 19.Qg3=+) 16...Bc5 17.Bd4 Bd4 18.Nd4 Bd5 19.Nc3 =+; (A2) 15...a5 16.Qe3 (16.Na2 Bc5 17.Bd4 Bd4 18.Nd4 0-0 19.Bf3=+; 16.Bd3 a4 17.Be4 Ra5 18.Na2 Bc5 19.Bc3=+) 16...Bc5 17.Nd4 0-0 18.Ne4 Bb4 19.Nc2 =; (A3) 15...0-0 16.Qc2 (16.Qe3 Rc8 17.Rfc1 Bc6 18.Nb5 Nd5 19.Qd4=+; 16.Qf4 a5 17.Bd3 Bc6 18.Nd4 Bb7 19.Rfd1=+; 16.Ba3 Rc8 17.Qb2 Bc3 18.Qc3 Rc3 19.Be7=+; 16.Na2 Rc8 17.Qb1 Bc5 18.Bd3 h6 19.Nc3=+) 16...Rc8 17.Rfb1 Bc3 18.Bc3 Nd5 19.Rb3 =+.

11.e5 Nd5 12.dc4 bc4 13.Bc4 Nb6 14.Be2 Qe7=+ 15.Qc2 (A1) 15...0-0 16.0-0 (16.Bd3 h6 17.0-0 Rc8 18.Rfb1 Bc6 19.Qe2–/+) 16...Rc8 17.Rfb1 Bc3 18.Bc3 Nd5 19.Rb3=+; (A2) 15...Nd5 16.0-0 Nf4 17.Rfc1 Bc6 18.Bb5 Bc3 19.Bc6 =+; (A3) 15...Bc6 16.0-0 0-0 17.Rfb1 Rc8 18.Qd3 a5 19.Ne4 –/+.

5.Na3 b5 6.Nc2 Qd6 7.g3 Qd5 8.f3 Bd7 =+.

5.f3 Be6 6.Na3 b5 7.d3 cd3 8.Qc7 Qd7 =+.

5.Na3 Qd5 6.e3 b5 7.Be2 Qb7 8.Nf3 Bd5 =+.

5.e3 Na6 6.a3 Bd5 7.Nf3 b5 8.d3 cd3 +=.

5.e3 b5 6.a4 c6 7.Nc3 Qb6 8.d3 Na6 =+.

5.e4 b5 6.d3 cd3 7.Qg5 Bc4 8.Bg7 f6 –/+.

5.Nf3 Bd5 6.Na3 e5 7.Ne5 Nf6 8.Bc3 Ne4 =+.

6.a3!?= Qd5 7.Ne2 Qd6 8.Nf4 Bf5 9.Bc4 e5 10.Ne2 Rd8 11.d4 =.

6.a3!?= Qd5 7.Ne2 Qd7 8.Nf4 Bf5 9.Qc4 e5 10.e4 Bg4 11.h3 =.

6.a3!?= Qd5 7.Ne2 Bf5 8.Nec3 Qe6 9.Nb5 0-0-0 10.Qc4 Qg6 11.Qc1 =+.

6.a3!?= Qd6 7.Bc4 Bc4 8.Qc4 Qg6 9.g3 a6 10.Ne2 e5 11.d4 =.

6.a3!?= Qd6 7.Nf3 (1) 7...b5 (11) 8.a4 Nb4 9.ab5 Bd5 10.Ne5 Nd3 11.Nd3=; (12) 8.Nc3 Rb8 9.d3 cd3 10.Ne4 Qd5 11.Bd3 =; (13) 8.d4 a6 9.Nc3 Nf6 10.Qc2 (131) 10...Bg4 11.Be2=+; (132) 10...Rd8 11.Be2=+; (14) 8.d3 cd3 9.Bd3 a6 10.0-0 Rd8= 11.Rd1=; (2) 7...Qd5 8.Nc3 Qf5 9.Qb1 Qg4 10.h3 Qh5= 11.Be2 =.

6.a3!?= Nf6 7.Bc4 (1) 7...Bd5 8.Nf3 Bf3 9.gf3 a6 10.Bf6 ef6 11.Qc2 +=; (2) 7...Bf5 8.Ne2 a6 9.0-0 e6 10.d3 Bd6 11.e4 +=; (3) 7...Bc4 8.Qc4 e6 9.b5 Na5 10.Qa4 Qd5= 11.Nf3 =.

7.Na3 b5 8.Qb2 Nf6 9.f3 Bf5 10.e4 Bd7 –/+.

7.a4 Bd5 8.Na3 e5 =+.

7.a4 Bd5 8.Na3 e6 9.Qb2 Nf6 10.f3 e5 =+.

7.a4 Nf6 8.Na3 Nd5 9.Nc4 Ncb4 10.Qb1 c5 =+;

7.Nf3 Bd5 8.Qb2 Nf6 9.b5 Nb8 10.ba6 Ra6 =+.

5.Na3 f6 6.h3 Bd7 7.Nc4 Nc6 8.a3 e5 =.

5.Qc4 Nf6 6.Nf3 Bf3 7.gf3 e6 8.Bg2 Nbd7 =+.

5.e3 e5 6.Bc4 Nf6 7.Be5 Nc6 8.Bb2 Bb4 =+.

5.Qc4 Nf6 6.e4 Nbd7 7.f3 Bh5 8.d4 e6 =.

5.Qc4 Nf6 6.Nf3 e6 7.a3 Nbd7 8.h3 Bf3 9.ef3 Bd6 10.d4 a5 11.b5 cb5 12.Qb5=+ 0-0 13.Nd2 Qb6 14.Ne4 Qb5 15.Bb5 Be7 16.0-0 Rfc8 17.Rfc1 h6 18.a4 Bb4 19.Rc8 Rc8 20.Rc1 Rc1 21.Bc1 Kf8 ½–½. Psion – Psion, 4 Min/Zug, 1991.

5.h3 Be6 6.Nf3 Nf6 7.e4 b5 8.d3 cd3 =.

5.h3 Bh5 6.Qc4 Nd7 7.g4 Bg6 8.Nf3 e6 =+.

5.Qc4 a5 6.b5 c6 7.Nc3 cb5 8.Nb5 Na6 =.

5.e3 b5 6.a4 c6 7.Bc3 Nf6 8.Nf3 Nd5 =+.

5.Na3 Na6 6.Nc4 Nf6 7.a3 c5 8.b5 Nc7 =.

5.Na3 c6 6.Nc4 Bc4 (6...Bc4 7.Qc4 Nf6= (7...e6 8.Nf3 Nf6 9.Rb1 b5 10.Qc2 a5) 8.Nf3 e6 9.e3 Nbd7 10.a3 a5) 7.Qc4 Qd5 (7...Nf6 8.Nf3= e6 9.a3 b5 10.Qc2 a5; 7...e6 8.Nf3 Nf6 9.Rb1 b5 10.Qc2 a5) 8.Qg4 (8.Qd5 cd5 9.Rc1 Nc6+= (9...Nd7 10.Nf3 e6) 10.b5 Na5) 8...Nd7 (8...Qd7 9.Qg3 (9.Qh4 e6 10.Nf3 Qe7) 9...f6 (9...Nf6 10.Nf3 Qd8) 10.Rc1= (10.Qc3 a5) 10...e6) 9.Bg7+= Ngf6 10.Bf6 Nf6 11.Qf4 (11.Qh4 Rg8 12.Qh3 e6=) 11...Ne4 (better is 11...Bg7 12.Rd1 a5=) 12.a3?? (better is 12.Nf3+=) 12...Bh6!–+ 13.Qh6 Qd4 14.Rb1 Qf2 15.Kd1 Qf1 16.Kc2 Qg2 17.Nf3 Qe2 18.Rb3 (18.Qe3 Qc4 19.Kd1 Rd8–+) 18...0-0-0 19.Qe3 Qe3 20.Re3–/+ Nd6 21.Re7 Nb5 22.a4 Nd4 23.Nd4=+ Rd4 24.Kc3 Rhd8–/+ 25.Rf7 Rd3 26.Kc2 Rd2 27.Kc3 R2d3 28.Kc4?? b6 29.Rf4–/+ Ra3 30.Rf6 Rdd3 31.Rc1 Rd7 32.Rc6 Kb7 33.b5 Rad3 34.Kb4= Rh3 35.R1c2 a5 36.ba6 Ka6 37.Re2 Rdd3 38.Rb2 Rd4–/+ (39.Rc4 Rc4 40.Kc4 Rh4 41.Kb3 Ka5–/+) 0–1. Kusmierek,Jozef – Wisniewski,J, corr, 1994.

5.Na3 Nf6 6.Nc4 Nc6 7.Rc1 Bd5 8.a3 e6 =.

5.e4 a6 6.Bc4 Bc4 7.Qc4 e6 8.Nf3 Nf6 =.

5.e4 b5 6.a4 Nc6 7.ab5 Nb4 8.Qa4 Nd3 =.

5.e4 Nc6 6.Bc4 Bc4 7.Qc4 Qd6 8.a3 Qg6 =.

6.Nc4 Qd7 7.a3 Nd4 8.Qd3 Nc6 9.Qd7 Bd7 10.Rc1 a6 11.Nf3 Rd8 12.Nce5 Ne5 13.Ne5.

6.Nc4 Qd7 7.a3 Nd4 8.Qd3 Rd8 9.Ne5 (A) 9...Qd6 10.Bd4 Qd4 11.Qd4 Rd4 12.e3 Rd8 13.Rc1; (B) 9...Qb5 10.Qb5 Nb5 11.Rc1 c6 12.Ngf3 f6 13.Nd3; (C) 9...Qd5 10.Bd4 Qd4 11.Qd4 Rd4 12.e3 Rd6 13.d4.

6.Nc4 Nf6 7.Rc1 b5 8.Na3 Nb4 =.

6.b5 Qb4 (A) 7.Rb1 (A1) 7...Nf6 8.Nf3 c3 9.dc3 Qc5 10.Rd1 a6 11.Qa4 =; (A2) 7...Qc5 8.e4 c3 9.Qc3 Qc3 10.Bc3 Ba2 11.Ra1 =; (B) 7.e4 a6 8.Rb1 c3 9.dc3 Qc5 10.ba6 Na6 11.Bc1 +=.

6.b5 Qc5 7.e3 (7.e4 (A) 7...c6 8.Nc4 (8.bc6 Nc6 9.Nc4 Nb4 10.Qc3 Bc4 11.Bc4=) 8...cb5 9.d4 Qc8 10.Ne3 Qc2 11.Nc2=; (B) 7...Nf6 8.Nc4 Bc4 9.Bc4 Qg5 10.g3 e6 11.f4+=; (C) 7...a6 8.Nc4 (8.ba6 b5 9.d3 Ra6 10.Nb1 Nc6 11.a4–/+) 8...ab5= (8...Qb5?? 9.Nd6 cd6 10.Bb5 ab5 11.Nf3+-) 9.d4 Qb4 10.Nd2 Qa5 11.d5=) 7...a6 (7...c6 8.bc6 b5 9.d3 Nc6 10.dc4 Qb4 11.Qc3=+; 7...Nf6 8.Nc4 (8.Rc1 a6 9.Bc4 Bc4 10.Qc4 Qc4 11.Rc4=; 8.Nf3 a6 9.Qa4 c6 10.Nd4 Bd7 11.Bc4=; 8.Bc4 Bc4 9.Qc4 Nbd7 10.Qc5 Nc5 11.Bf6=) 8...Bf5 9.Qa4 Ne4 10.d4 Qd5 11.b6+/–; 7...c3 8.dc3 (8.Qc3 Qc3 9.Bc3 Nf6 10.d3 Nd5 11.Bb2=) 8...Nf6 9.Bd3 Nbd7 10.Nf3 Bg4 11.Nd4=) 8.Qa4 (8.d4 Qb4 9.Qc3 Qc3 10.Bc3 Bd5 11.b6–/+; 8.ba6 b5 9.d3 Qb4 10.Qc3 Na6 11.Qb4=+) 8...c6 9.b6 (< 9.Bc4 Bc4 10.Qc4 Qc4 11.Nc4 ab5–/+; 9.Bd4 cb5 10.Bc5 ba4 11.Bc4=+) 9...Qb6 10.Qc2 Nd7 (10...Qd8 11.Bc4=+) 11.Nc4 Qc5 12.d4 Qf5 (12...Qh5!?=) 13.e4+= Qg6 14.Ne3 Nh6 (14...Ndf6 15.Bd3 Ng4 16.Nf3+=) 15.Bd3+/– Ng4 16.Nf1 Qh6 (16...Qg5!?+=) 17.Bc1+/– Qh5 18.h3 Nh6 19.Nf3 Qa5 (19...f6 20.Ng3 Qa5 21.Bd2+-) 20.Bd2+- Qa3 21.Ne3 f6 22.Rb1 Qa2 23.Qc3 Rb8? (better is 23...Bf7+-) 24.d5! cd5 25.Ra1 Qa1 26.Qa1 Nc5 27.Qb1 de4 28.Be4 Ne4 (28...b5 29.Bh7 Bf7 30.Be4+-) 29.Qe4 Bd7 30.Nd5 Bc6 (30...Bf5 31.Nc7 Kf7 32.Qc4 e6+-) 31.Nc7 Kd8 32.Qe6 (32...Kc7 33.Bf4 Kd8 34.Bb8+-) 1–0. marekt – dufa, internet, 2009.

6.Qc3 Qd5 7.e3 b5 8.Be2 Qb7 =.

7.ba6 Qa6 8.Nf3 (A) 8...Qa4 9.e4 Qc2 10.Nc2 b5 11.Ncd4 Bd7 12.d3; (B) 8...b5 9.Ng5–/+ Bd7 10.Nh7 Nf6 11.Nf8 Kf8 12.Rb1.

7.Nf3=+ ab5 8.Nb5 Qb6 9.a4 c6 10.Bd4 Qd8 11.Na3 =.

7.Nf3!? Qc5 (1) 8.b6 Qb6 9.Ne5 Nc6 10.Nac4 Qc5 11.Ba3 Nd4 12.Qb2; (2) 8.Nd4 ab5 9.Ndb5 Nf6 10.e4 Kd8 11.Nd4 Ra3 12.Ne6; (3) 8.ba6 (31) 8...Na6 9.e4 Nb4 10.Qc1 Qc6 11.Qb1 Nf6 12.Bf6; (32) 8...Ra6 9.Qc3 Nd7 10.e3 Nb6 11.Rc1 Nf6 12.d4; (4) 8.d4 Qb4 9.Qd2 Qa4 10.ba6 b5 11.d5 Bf5 12.Nd4.

7.Nf3=+ Qc5 8.Nd4 ab5 9.Nab5 Bd7 10.a4 Nf6 11.e4 =.

7.Nf3!? Nf6 8.Nd4+= c3 9.Qc3 Bd5 10.f3 c5 11.Nb3 Bb3 12.Qb3.

8.b6+= Nd7 9.Bc4 Nb6 10.Be6 Qe6 11.Nf3 Rd8 12.0-0 Nd7.

8.b6 Nd7 9.Nc4 Bc4 10.Qc4 Nb6 11.Qb3 =+.

8.Bc4 ab5 9.Be6 Qe6 10.Nf3 Nf6 11.d3 =+.

8.Nc4 Bc4 9.Bc4 (9.e5 Qd5 10.Qc4 Qc4 11.Bc4 ab5 12.Bd3 e6) 9...ab5 10.Be2 Qg6 11.Nf3 Nf6 12.Bf6 ef6.

8.e5 Qc5 9.Bc4 Bc4 10.Qc4 Qc4 11.Nc4 =+.

5.Qc4 c6 6.e4 Nbd7 7.f3 Bh5 8.d4 e6 =.

5.Qc4 c6 6.Bf6 ef6?? (better 6...Be6 7.Be7 Qe7=+) 7.Qg4+- Nd7 8.Nf3 (8.Nc3 f5 9.Qf4 Qf6+-) 8...Qb6 9.a3 0-0-0?! (9...a5+-) 10.Nc3 Kb8 (10...Qc7 11.b5+-) 11.e3 (11.Qc4 Ne5 12.Ne5 fe5 13.Qf7 Qd4+-) 11...Ne5 12.Ne5 fe5 13.Be2 (13.Bc4 Qc7+-) 13...h5 (13...g6 14.Qc4 f5 15.Rc1+-) 14.Qf3 f6 15.Qg3 (15.Rb1 a6+-) 15...g5 Black prepares h4 (15...h4 16.Qf3+-) 16.Qf3 h4 (16...Be7+-) 17.Qf6 Bd6 18.Qg5 Rhg8 19.Qh4 Rg2 20.Ne4 Bc7 (20...Rg6 21.Qh5 Re6 22.Bc4+-) 21.Bf3 (better 21.Bg4 Qb5 22.Qh3 Rg4 23.Qg4 Bd6+-) 21...Rgg8 22.Be2 a5?? (22...Rg2 23.Bg4 Qb5+-) 23.Rb1 ab4 24.Rb4 Qa7 25.a4 (25.Rb3 Ka8+-) 25...Ba5 (25...Qa5 26.Qe7 Rge8 27.Qc5+-) 26.Rb1 Ka8 27.Nf6 (better 27.Qe7 Rde8 28.Qf6 Bd8+-) 27...Bd2 28.Kf1 Rh8 29.Qg5 Qa4 (29...Qa5+-) 30.Qe5 Qa2 (30...b5 31.Ra1 Qa1 32.Qa1 Kb7 33.Rg1+-) 31.Ra1 Qa1 32.Qa1 Kb8 33.Qe5 (33.Qe5 Ka7 34.h4+-) 1-0. ClayPigeons (2165) - Burol (2210), Rated Bullet game, lichess.org, 2019.

5.Qc4 Qc8 6.e3 Nbd7 7.h3 Bh5 8.d4 (8.Ne2!?+=) 8...e6= 9.Nd2 a5 10.ba5 Ra5 11.Ngf3 Bf3 12.Nf3 Nb6 13.Qb3 Nbd5 14.Bd3 Bb4 15.Ke2 0-0 16.Rhc1 Bd6 17.g3 (17.a3!?=) 17...Nb4+= 18.Bb1 b6 (better is 18...Qd7!?+=) 19.a3+= Qa6 20.Qc4 b5 21.Qb3 Nc6 22.e4 Be7 (better is 22...Rb8 23.Qd3 Rd8+/–) 23.e5+- Rd8?! (23...Nd5 24.Qc2 b4 25.Kd2 f5 26.Qc6 ba3 27.Qa6 Ra6+-) 24.ef6 Bf6 25.Qc2 (25.Qc2 b4 26.Qd3 Bd4 27.Qa6 Ra6 28.Rc6 Bb2 29.Ra6 Ba1 30.ab4+-) 1–0. Kutuzov,Denis (2360) – Papazian,Eduard (2150), Moscow Open E, 2011.

5.Qc4 Qd7 6.e3 g6 (6...a6 7.Nf3 Nc6 8.Be2=) 7.Nc3 (7.Nf3 Bf3 8.gf3 Bg7=) 7...Nc6 8.Nf3 (8.b5 Ne5 9.Qd4 0-0-0 10.Qd7 Ned7+= (10...Nfd7? 11.f4+-; 10...Kd7?? 11.d4+-; 10...Rd7?? 11.d4+-)) 8...Bf3 (8...0-0-0 9.Rd1=+) 9.gf3= 0-0-0 10.d4 e5 (10...a6 11.f4= (11.Qf7? Ne5 12.Qb3 Nf3 13.Kd1 e5–+)) 11.b5+= Nb4 (11...Na5 12.Qa4 ed4 13.0-0-0+= (worse 13.Qa5 dc3 14.Bc3 Qf5=)) 12.Ne4+- Nbd5 (12...Qf5 13.Bg2 Nbd5 14.Rc1 Bb4 15.Ke2+-) 13.Nf6 (13.0-0-0 Ne4 14.fe4 Nb6+-) 13...Nf6 14.0-0-0 Bg7 (14...ed4 15.Bd4 Qf5 16.Qc2 Qc2 17.Kc2+-) 15.h4 Kb8 (15...Qe7 16.de5 Rd1 17.Kd1+-) 16.Bh3 Qe7 17.de5 Nd7 18.Bd7 (18.Rd7 Rd7 19.Bd7 Qd7+-) 18...Rd7 19.Rd7 Qd7 20.Rd1 (20.h5 Qf5 21.hg6 Qg6+-) 20...Qe7 21.f4 (21.Qd5 Rc8+-) 21...Rc8 22.Qd5 (22.Kb1 Bf8+-) 22...c6 (22...Bf8!?+=) 23.bc6+- Rc6 24.Kb1 Qh4?? (better 24...Kc8+-) 25.Qf7+- Bh8 (25...Qf2 26.Rd8 Rc8 27.Rc8 Kc8 28.Qg8 (worse 28.Qg7 Qe1 29.Bc1 Qb4 30.Kc2 Qa4 31.Kd3 Qa6 32.Kd2 Qa2 33.Ke1 Qh2+-) 28...Kc7 29.Qg7 Kb6 30.Qf6 Kb5 31.Qe7 Qf1 32.Bc1 Qd3 33.Kb2+-) 26.Qf8 (26.e6 Rc8 27.Bh8 Rh8+-) 26...Rc8 27.Qd6 Ka8 28.Qd7 Kb8 29.Ba3 Rg8 (29...Be5 30.fe5 Qe4 31.Qd3 Qd3 32.Rd3 Rc6+-) 30.Bd6 Ka8 31.Be7 (31.Be7 a6 32.Bh4+-) 1–0. Reznak,Attila (2335) – Karacsonyi,Gellert (2010), Budapest Hungary, Bela Perenyi Memorial, 2016.

5.Qc4 Qd7 6.e4 a5 7.b5 Bh5 8.Ne2 Bg6 =.

5.Qc4 Be6 6.Qc2 Nc6 7.b5 Nb4 8.Qa4 c5 =.

5.e3 Qd7 6.Bc4 Bf5 7.Qb3 e6 8.Nf3 Nc6 9.a4 (better 9.Bb5!? Be4 10.Ne5=) 9...Nb4-/+ 10.0-0 Nc6 (10...Bc2 11.Qc3 Ne4 12.Qe5-/+) 11.d4 (11.Bb5 Be4 12.Ne5 Qd5 13.Qd5 Bd5=) 11...Bd6 (11...Na5 12.Qc3 Nc4 13.Qc4-/+) 12.Nc3 (12.a5 Rb8=+) 12...0-0 (12...Na5 13.Qb5 Nc4 14.Qc4-/+) 13.Nb5 (13.a5 Bg4-/+) 13...a6 (13...Na5!? 14.Qc3 Nc4 15.Qc4-/+) 14.Nd6 cd6 (14...Qd6? 15.Ba3 Qd7 16.Bf8 Rf8 17.Ne5+-) 15.Ba3 (15.a5 Qc7 16.Bc3 Rac8=+) 15...Rfd8 (better 15...Na5 16.Qb4 Nc4 17.Qc4 Rfc8-+) 16.Rab1? (better 16.Be2-/+) 16...Na5-+ 17.Qb4 Nc4 18.Qc4 Bb1 19.Rb1 d5 (19...b5 20.ab5 ab5 21.Qb3-+) 20.Qb3 Ne4 21.Ne5 Qc7 (21...Qe8!? 22.Bb4-+) 22.f3 Nd2 23.Qb7 Qb7 24.Rb7 f6 (better 24...Nc4!? 25.Nc4 dc4-+) 25.Nc6-/+ Rdc8 (better 25...Re8 26.Kf2 Kh8-/+) 26.Ne7+= Kf8?? (better 26...Kh8 27.Nc8 Rc8+=) 27.Nc8+- Ke8 (27...Kg8 28.Nb6 Re8 29.Bb4+-) 28.Nd6 (better 28.Nb6 Rd8 29.Rg7 Nc4 30.Nc4 dc4 31.Re7 Kf8 32.Re6 Kf7 33.Re7 Kg6+-) 28...Kf8 (28...Kd8 29.Bb4 Nc4 30.Nc4 dc4 31.Rg7+-) 29.Nc4 Kg8 30.Nd2 Rc8 31.Nb3 (31.Bc5 g5+-) 31...Rc2 (31...Rc3 32.Bb2 Rc6 33.a5+-) 32.Nc5 Ra2 33.Bb4 (33.Bb2 h6+-) 33...h6 (33...e5 34.Rd7+-) 34.Rb8 (34.Ne6!? Ra1 35.Kf2 Rb1+-) 34...Kh7 35.Ne6 Ra1 36.Kf2 Kg6 (36...Ra4 37.Rb7 Ra2 38.Kg3+-) 37.Kg3 Kf5 (37...f5 38.Nf4 Kh7 39.a5+-) 38.Nf4 (38.Nf4 g5 39.Nd5+-) 1-0. ClayPigeons (2110) - FISHAIR (2150), Rated Bullet game, lichess.org, 2019.

5.e4 e5 6.Bc4 Bb4 (6...Nc6!?=+) 7.Qb3 Nc6 8.Bf7 Kf8 9.Bd5 Bd6 (9...Nd5? 10.ed5 Nd4 11.Qb4 Qe7 12.Qe7 Ke7 13.Na3+-) 10.h3 (10.Bc6 bc6 11.Qg3 h5+=) 10...Na5 11.Qd3 (11.Qa4 c6 (11...Nd5? 12.hg4 Nb4 13.Qa5 Nd3 14.Ke2 Nf4 15.Kf1+-) 12.hg4 b5=) 11...Bh5 (11...Nd5 12.hg4 Nf4 13.Qg3=+) 12.Ne2 (12.Nc3 Nd5 13.Qd5 c6=+) 12...c6 13.Bb3 Bg6 (13...Nb3 14.ab3 Ke8 15.Ng3=) 14.Ng3 (14.f3 Nb3 15.Qb3 b6=) 14...Nb3=+ 15.ab3 Bc5 (15...Ke8 16.Nc3=) 16.Qf3 Qd6 17.h4 (17.Nf5 Qe6=) 17...h5 (17...Bd4 18.Bd4 Qd4 19.Ra4=) 18.0-0 (18.Na3 Ke8=) 18...Kg8 (18...Ke8 19.Nf5 Bf5 20.Qf5=) 19.Nc3 (19.Nf5 Qe6=) 19...Rf8 20.Na4 Bb4 (20...Bd4 21.Qe2 Kh7 22.Bd4 Qd4 23.Nc3=) 21.Bc3= a5 22.Qe3 b5 23.Bb4 ab4 24.Nb2 Kh7 25.f3 Ra8=+ 26.Ra8 Ra8 27.Nd3 Rd8 28.Nc5 Qd2 29.Qd2 Rd2 30.Na6 Bf7 31.Rc1 Nd7 32.Nb4 c5=+ 33.Na6 c4 34.bc4 bc4 35.Nf5 Nb6 36.Nc5 Rb2 37.Nd6 Bg8 38.g3 Rd2 39.Ndb7 ½–½. pcmvr (2800) – rcastaneda (2730), net–chess.com, 2006.

6.Qc4 Nbd7 7.Nc3 (7.Bf6 Qf6 8.Nc3 Bf5 9.Qc7 Bb4=) 7...Bd6 8.Ne4 Ne4 (8...0-0 9.Rc1 e5 10.Nd6 cd6 11.Qc7+=) 9.Qe4 Bf5 10.Qc4 (10.Qb7!? 0-0 11.a3=) 10...0-0 11.Nf3 Qe7 12.a3 a5 13.b5 e5 14.Be2 Kh8 15.a4 Be6 16.Qc2 f5 17.0-0 Bd5 18.Bc4 (18.d3 Rad8=) 18...Bc4 19.Qc4 e4 20.Nd4 Ne5 21.Qe6 Qh4 22.f4 (22.h3 Nd3 23.Bc3 Qf6+=) 22...ef3!–/+ 23.Nf3 (23.Nf3; 23.gf3 Rf6 Combination) 23...Nf3 24.Rf3 Qh2 25.Kf2 Rae8 26.Qd5 Qh4 27.Ke2 Qg4 28.g3 Bb4 29.d3? (29.Rd1 f4 30.Qd4 Rd8–/+) 29...c6! 30.bc6 (30.Qd4 Qg6–/+) 30...bc6 (30...f4 31.Be5 fg3 32.Qe4–+) 31.Qc4 f4 32.Bc1?? Re5–+ 33.d4 fg3 34.Qc6 Ref5 0–1. Nevednichy,B (2265) – Manolache,M (2545), 3rd Eforie Open, 2011.

6.Bc4 c6 7.a3 (7.f3 Bh5=) 7...Be7 (7...Bf5 8.Qb3=+) 8.Nc3 Nbd7 9.d4 Bf5 (9...0-0 10.Nge2=) 10.Qb3 (10.e4 Bg6=) 10...a6 (10...a5 11.b5=+) 11.Nf3= Ne4 12.0-0 Nc3 13.Bc3 0-0 14.Rfe1 b5 15.Be2 Nb6 16.Rac1 Be4 17.Nd2 Bd5 18.Qc2 Nc4 (better 18...f5!?+=) 19.Nc4+/- bc4 (19...Bc4 20.Bc4 bc4 21.Qa2+/-) 20.Bb2 (better 20.e4!?+-) 20...a5+/- 21.Bc4 (21.ba5 Bd6+/-) 21...Bc4 (21...ab4!? 22.ab4 Bb4=) 22.Qc4+/- ab4 23.ab4 Rb8 24.Bc3 Qb6 25.Rb1 Rfd8 26.Rb2 (26.Ra1 Qb5 27.Qb5 cb5+/-) 26...Qb5 27.Qb3 Bf6 (27...Ra8 28.Ra2+/-) 28.Reb1 Rdc8 29.Qc2 Qc4 30.Bd2 Qc2 (30...Qd5 31.Rc1+/-) 31.Rc2 Be7 32.f3 Kf8 33.Kf2 Ke8 34.Ke2 Kd7 35.Kd3 Rb5 36.Kc4 Rcb8 (36...Ra8 37.e4+/-) 37.Ra2 R8b7 38.Ra6 (38.e4 h5+/-) 38...R5b6 (38...Bd6 39.h3+/-) 39.Rb6 Rb6 40.Bc3 Kc7 41.Ra1 f6 42.Ra7 Rb7 43.Rb7 Kb7 44.e4 Kb6 (44...h5 45.d5 ed5 46.ed5+-) 45.d5 ed5 46.ed5 c5?? (better 46...Kb7+-) 47.bc5 Bc5 (47...Kc7+-) 48.Bd4 (better 48.Ba5! Ka5 49.Kc5+-) 48...Bd4 49.Kd4 Kc7 50.Kc5 Kd7 51.d6 g6 0-1. ClayPigeons (2130) - Katilaga (2120), Rated Bullet game, lichess.org, 2020.

6.Bc4 Be7 7.a3= Bf5 8.Qb3 (8.d3 0-0=) 8...0-0 9.d4 Nbd7 10.Nf3 Nb6 11.Be2 Ne4 (11...a5 12.ba5 Ra5 13.Nc3=) 12.Nbd2 Nd2 (12...a5 13.0-0=+) 13.Nd2= Bg6 14.Bf3 Bf6 (better 14...c6!?=) 15.Bb7+/- Rb8 16.Bf3 c6 (16...a5 17.Ne4+/-) 17.0-0 (17.Bc6 a5+-) 17...Nd5 18.Rac1 (18.Ne4 Be4 19.Be4 a5+-) 18...h6 (better 18...a5!?+/-) 19.Rc6+- Re8 (19...a5 20.e4 Ne7 21.Rc4+-) 20.Rfc1 Qe7 (20...Qd7 21.Bd5 Qd5 22.Qd5 ed5 23.R1c5+-) 21.Bd5 ed5 22.Qd5 Red8 23.Qc5 Qd7 24.Rc7 Qg4 25.h3 (better 25.f3 Qh4+-) 25...Qg5 (25...Qe2 26.Bc3 Bh4+-) 26.Qg5 Bg5 27.Ra7 Bf6 28.Rac7 (28.Nb3 Kf8+-) 28...Bd3 (28...Kf8 29.f3+-) 29.Nf3 (29.Nb3 Re8+-) 29...Be2 30.Ne5 Re8 (30...Be5 31.de5 Rb6 32.Bd4+-) 31.Nc6 (31.Nf7!? Be7 32.Ne5 Bd6+-) 31...Rb6 32.Na7 (32.a4 Ra6 33.a5 Bb5+-) 32...Rbb8 33.Nc6 Ra8?? (33...Rb6 34.a4+-) 34.Ne5 (34.Rc5!? Kf8+-) 34...Be5?? (34...Rab8 35.Nf7 Be7+-) 35.de5+- Red8 (35...Kf8 36.f4+-) 36.f4 (36.e6 f6+-) 36...Re8 (36...g5 37.R1c5+-) 37.Bd4 (37.f5 Red8+-) 37...Bb5 (37...Ra3 38.f5 Bd3 39.e6+-) 38.R1c3 Ba4 (38...Rad8 39.g4+-) 39.Rb7 (39.f5!? Red8+-) 39...Rec8 (39...Reb8 40.Rb8 Rb8 41.e6+-) 40.Rcc7 (better 40.Rc8!? Rc8 41.e6 f6+-) 40...Rc7 41.Rc7 Rd8 (41...g5 42.f5 Kf8 43.e6 fe6 44.fe6+-) 42.Rc3 (better 42.e6!? f6+-) 42...Re8 (42...g5 43.g3+-) 43.Kf2 Ra8 44.Ke2 Kh7 45.Kd3 Kg6 (45...Bb5 46.Ke4+-) 46.e4 f6 (46...Bb5 47.Kd2+-) 47.Ke3 fe5 48.Be5 Kf7 (48...Ra7 49.f5 Kf7 50.Bd4+-) 49.f5 (49.Rc7 Ke8 50.Bg7 Bd7+-) 49...g6 (49...Rd8 50.Bd4+-) 50.fg6 (better 50.Rc7 Ke8 51.fg6 Bd7+-) 50...Kg6 51.Kf4 (51.Rc7 h5+-) 51...h5 (51...Rf8 52.Kg3+-) 52.g4 Rg8 (52...Rf8 53.Kg3+-) 53.g5 Rf8 (53...Kf7 54.Rc7 Ke6 55.Rh7+-) 54.Kg3 (54.Kg3 Kg5 55.Rc5 h4 56.Kg2+-) 1-0. ClayPigeons (2115) - chesst_press (2050), Rated Bullet game, lichess.org, 2020.

6.Bc4 Be7 7.Qb3 0-0 8.d4 a5 (8...Nc6 9.a3=+) 9.a3 (9.ba5 Nc6 10.Bc3 Nd5=) 9...ab4=+ 10.ab4 Ra1 11.Ba1 Nc6 12.b5 (12.Bc3 Nd5 13.b5 Ncb4=+) 12...Na5-/+ 13.Qc2 Nc4 14.Qc4 Qd7 15.Nd2 (15.Bb2 Ra8-/+) 15...Ra8-+ 16.Bc3 Nd5 17.Ngf3 (17.h3 Bb4! 18.hg4 Nc3 19.Nb3 Qb5 20.Qb5 Nb5 21.Ke2 Ra2 22.Kd3-+) 17...c6 (17...Nc3 18.Qc3 Qb5 19.Qc1-+) 18.Ne5 (better 18.bc6 Qc6 19.Qc6 bc6 20.Bb2-/+) 18...Qe8?? (better 18...cb5 19.Qd3 Qc7 20.Ng4 Qc3 21.Qc3 Nc3-+) 19.Ng4+/- cb5 20.Qb3 (better 20.Qd3 Qc6 21.Bb2=+) 20...Rc8?? (better 20...Ra3 21.Qc2 Nc3-/+) 21.Bb2+- h5 (21...Bb4 22.e4 Nf4 23.Kd1+-) 22.Ne5 Bf6 23.Nef3 1-0. ClayPigeons (2115) - LiefKK (2110), Rated Bullet game, lichess.org, 2020.

6.Bc4 Bf5 7.Qb3=+.

5.Na3 f6 (5...Nc6 6.Nc4 Nb4 7.Qa4 Nc6 8.Na5 Qd7=; 5...e5 6.Be5 Nc6 7.Nc4 Nb4 8.Qb2 f6=; 5...e6 6.h3 Bf5 7.e4 Bg6 8.Nc4 Nc6=; 5...Na6 6.Qc4 c6 7.b5 Nb8 8.h3 Bd7=) 6.h3 Bd7 7.Nc4 e5 8.a3 Nc6 =.

5.Qc4 a5 6.b5 Nd7 7.f3 Nb6 8.Qc2 Bd7 =.

5.Qc4 a6 6.Nf3 Bf3 7.gf3 e6 8.Bg2 Nf5 =.

5.Qc4 c6 6.e4 Nd7 7.h3 Be6 8.Qc2 f6 =.

5.Qc4 Nd7 6.h3 Be6 7.Qb5 a5 8.a3 ab4 =.

5.Qc4 Be6 6.Qc2 Nc6 7.b5 Nb4 8.Qa4 Qd6 =.

4.Qc2 e6=+ 5.e3 Nf6 (5...Bb4?? 6.Bg7 d4 7.Qb3+-) 6.a3 Nbd7 7.Be2 Be2 8.Ne2 Bd6 (8...dc4 9.Qc4 a5 10.0-0=+) 9.d4 (9.c5 Bc7=) 9...Ne4 10.Nd2 (10.c5 Bc7=) 10...Nd2=+ 11.Qd2 (11.cd5 Nb6 12.Qd2 cd5-/+ (worse 12...Nd5 13.e4=)) 11...dc4-/+ 12.0-0 0-0 13.e4 b5 14.e5 (14.f4 a5-/+) 14...Be7 15.Qf4 Nb6 16.Rad1 (16.Qg3 a5-/+) 16...Nd5-+ 17.Qg4 a5 18.ba5 Ra5 19.Bc1 Ba3 (better 19...Kh8-+) 20.Bh6=+ g6 21.Bf8 Bf8 22.h4 (22.Ra1 Ba3-/+) 22...c3 23.Nf4 White prepares h5 (23.h5 b4-/+) 23...b4 24.h5 Nf4 25.Qf4 c2 (25...Rd5 26.Rd3-/+) 26.Rd3 c5 (worse 26...gh5 27.Rg3 Kh8 28.Rc1=) 27.hg6 hg6 28.Rh3? (28.Rc1!? Ra3 29.Ra3 ba3 30.Rc2 Qd4 31.Qd4 cd4 32.Kf1-/+) 28...Bg7 (28...Qd4 29.Qf6 Bg7 30.Qe7-+) 29.dc5 (better 29.Rf3 Qe7 30.Qd2-+) 29...Rc5 30.Rf3 Qe8 (30...Qf8 31.Rh3 Be5 32.Qc1-+) 31.Rb3? (better 31.Qd2-+) 31...Be5 (31...Qb5 32.Re1 Be5 33.Qd2-+) 32.Qh6 (32.Qe3 Qb5 33.Rc1 Rd5-+) 32...Bg7 (32...Qb5 33.Qc1-+) 33.Qe3? (33.Qd2 Qf8 34.Rc1 Bh6-+) 33...Qc8 (better 33...Qb5 34.Rc1 Qc4-+) 34.Rc1 Rc4 35.g3 Bd4 36.Qd2 Qc7 37.Kg2 Qc6 38.Kh2 Kg7?? (better 38...Qc5 39.Kg2 Bf6-+) 39.Rb4=+ Rb4 40.Qb4 Bf2 41.Qb2 Kg8?? (41...Kh7 42.Qf6 Be3 43.Qf7 Kh6 44.Qf8 Kg5 45.Qd8 Kg4=) 42.Qc2?? (better 42.Rc2 Bg3 43.Kg3 Qd6 44.Kf3+-) 42...Qc2 43.Rc2 Bd4 44.Kg2 Kg7 45.Kf3 (45.Rc7=+) 45...g5 (better 45...f5!?-/+) 46.Ke4= Bf6 47.Rf2 (better 47.Rc6!?=) 47...Kg6 48.g4 Be7 (48...Bh8 49.Rf3 Bb2-+) 49.Rf3?? (better 49.Ra2=) 49...Bd6-+ 50.Rf1 Bf4 51.Rf3 (51.Ra1 f5 52.Kf3 Kf6-+) 51...f5 52.gf5 ef5 53.Kd5 Kf6 54.Kd4 (54.Rf1 Be3-+) 54...Be5 55.Ke3 g4 56.Rf1 Kg5 57.Re1 Bf4 58.Kf2 Bh2 (58...Bc7 59.Kg2-+) 59.Kg2 Bf4 60.Rf1?? (60.Kf2 Bc7 61.Re7 Bb6 62.Kg2-+) 60...Bd6 61.Rd1 Be5 62.Rd8 f4 63.Rg8 Kf5 64.Rf8 (64.Kf2 Bd4 65.Kf1 f3-+) 64...Ke4 Black prepares the advance f3 65.Rg8 f3 66.Kf1 g3 67.Rg4 Bf4 68.Rh4 (68.Rg8 Kd5-+) 68...g2 69.Kf2 (69.Kf2 Kf5 70.Kf3-+). cipiripi (2220) - Eggplant (2285), Rated Blitz game, lichess.org, 2015.

5.Qc4 Nf6= 6.h3 (6.e4 Nbd7 7.f3 Bh5 8.d4 e6 9.Nd2=; 6.Nf3 Bf3 7.gf3 e6 8.Nc3 Qd6 9.a3=; 6.a3 Nbd7 7.f3 Be6 8.Qc2 a5 9.ba5=; 6.f3 Be6 7.Qc2 Bd7 8.e4 e6 9.a3=) 6...Bf5 7.Nf3 e6 8.d3 b5 9.Qb3 =.

5.Qg3 Nh6=+ 6.e4 Na6 7.a3 Be6 8.Qc3 Qd6 9.Bc4 =.

5.Qg3 Nh6=+ 6.e4 Na6 7.Bc3 c5 8.Bc4 cb4 =+.

5.Qg3 Nh6=+ 6.e4 b5 7.h3 Bh5 8.d3 e6 9.Nd2 –/+.

5.Qg3 Nh6=+ 6.Qf4 b5–/+ 7.a4 (7.h3 Bf5–/+ 8.g4 Bb1 9.Rb1–/+) 7...e6 8.h3 (8.Nc3 Bd6 9.Qe4–/+) 8...Bf5 9.Na3 (9.Nc3–/+) 9...Qd5 (9...Bb4 10.Bg7 Rg8 11.Bh6+/–) 10.f3 (10.ab5 cb5 11.Qe5 Qe5 (< 11...Bb4 12.Qd5 ed5 13.Bg7 Ba3 14.Ra3+=) 12.Be5 Nc6 (< 12...Bb4 13.Bg7 Ba3 14.Ra3+=) 13.Nb5 Kd7–/+ (< 13...Ne5 14.Nc7 Kd7 15.Na8+=)) 10...Bd6–+ (10...Bb4 11.Bg7 Rg8 12.Bh6= (12.Qh6 Rg7 13.Qg7 Qd2 14.Kf2 Bc5 15.Kg3 Bd4 16.Qg8 Ke7–+)) 11.e4 Bf4 12.ed5 0-0 (12...cd5 13.Ne2 Bg5 14.Bg7=+) 13.Ne2 (13.dc6 Nc6 (< 13...ba4 14.Ne2 Bc7 15.Nd4=) 14.ab5 Nb4 15.Bc4 Rfd8–/+) 13...Bd6 14.g4 (14.dc6 Nc6 15.ab5 Nb4–/+) 14...Bd3 15.de6 (15.dc6 Nc6 16.ab5 Nb4–/+) 15...a6 (15...fe6 16.ab5 Bb4 17.Nd4–/+) 16.Bc3? (16.Nd4 fe6 17.Bd3 cd3 18.Rg1–+) 16...fe6–+ 17.Bg2 (17.Nd4 e5 18.Ne6 Rf3–+) 17...ba4 (17...a5 18.f4 ab4 19.Nb5 cb5 20.Ba8 bc3 21.ab5 Be2 22.Ke2 cd2 23.f5–+) 18.Nc1 Bg3 (18...Rf4 19.Ne2 Rf7 20.Nc1 Bg3 21.Kd1–+) 19.Kd1–/+ Nd7 20.Nd3 cd3 21.Nc4 c5 (21...Kh8–/+) 22.Ra4 (better is 22.Nb2!? c4 23.Nc4=+) 22...cb4–+ 23.Rb4 Nc5 (23...Rab8 24.Nb2 Nc5 25.Rb8 Rb8 26.Bf1–/+) 24.Kc1 (24.Bd4!? a5 25.Rb2–/+) 24...Rab8–+ 25.Nb2 (25.Kb2 g5–+) 25…Rb4 (26.Bb4 Nb3 27.Kd1 Rd8–/+; 25...Rbc8!?–+) 0–1. Mangone,Mark – Waibel,Ulrich, compuserve, 1997.

5.b5 dc4 6.Qc4 Nf6 7.Bf6 Qf6 8.Nc3 Bf5 9.e4 =.

5.b5 Nd7 6.d4 Ngf6 7.e3 c5 8.h3 Bh5 9.Nd2 =+.

5.b5 Ne7 6.Na3 Bf5 7.Rc1 Nd7 8.Nf3 a6 9.cd5 =+.

5.c5 b6 6.Qa4 Nf6 7.cb6 Qb6 8.Bf6 gf6 9.a3 =+.

5.c5 Nd7 6.a3 b6 7.d4 a5 8.e3 ab4 9.ab4 =+.

5.c5 Nf6 6.Nf3 b6 7.d4 a5 8.Ne5 ab4 9.Qb4 =+.

5.Bd4 Nd7 6.h3 dc4 7.Qc4 Bh5 8.g4 Bg6 9.Bg2 =+.

5.Bd4 Ne7 6.Bb2 Nd7 7.a3 Bf5 8.Nf3 a5 9.d3 =+.

5.Bd4 f6 6.e3 Ne7 7.Be2 Be2 8.Ne2 e5 9.Bc5 =.

5.Bd4 Nf6 6.Nc3 Bd6 7.cd5 ed5 8.b5 0-0 9.bc6 =+.

5.Bd4 Nh6 6.h3 Nf5 7.Be5 Bh5 8.g4 dc4 9.Qc3 +/–.

5.cd5 cd5 6.Na3 Nc6 7.b5 Na5 8.Qa4 h5 9.d3 =.

5.cd5 ed5 6.Nf3 Nf6 7.Qe3 Qe7 8.Bf6 Qe3 9.fe3 =.

5.e3 Nf6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 Bg4 5.Qb3 e6).

5.Nf3 dc4 6.Qc4 Bf3 7.ef3 Nf6 8.a3 Bd6 9.Nc3 =+.

5.Nf3 Nd7 6.e3 Bf3 7.gf3 Ngf6 8.Rg1 dc4 9.Bc4 =+.

5.Nf3 Ne7 6.cd5 Nd5 7.a3 Nd7 8.e4 N5f6 9.h3 =.

5.Nf3 Bf3 6.gf3 Nf6 7.Rg1 dc4 8.Qc4 Nbd7 9.Nc3 =+.

5.Nf3 Nf6 6.Ne5 Bf5 7.e3 Bd6 8.Be2 Nbd7 9.Nd7 =.

5.h3 dc4 6.Qg3 Bf5 7.Bg7 Bg7 8.Qg7 Qf6 9.Qf6 =.

5.h3 Bf5 6.d3 Nf6 7.Nf3 Nbd7 8.Nbd2 a5 9.ba5 =.

5.h3 Bh5 6.g3 Ne7 7.Bg2 dc4 8.Qc4 Nd5 9.a3 =.

5.Na3 e6 6.e3 Nf6 7.Nf3 a5 8.ba5 Qa5 9.Bf6 =.

5.Na3 f6 6.cd5 cd5 7.Nb5 e5 8.Rc1 Nc6 9.Qd5 =.

5.Na3 Nf6 6.cd5 Qd5 7.Nc4 Be6 8.Rc1 b5 9.Na5 =.

5.c5 b6 6.Nf3 bc5 7.bc5 Nd7 8.Qc3 Ngf6 9.Nd4 =.

5.c5 Nd7 6.Nf3 e6 7.a3 b6 8.cb6 ab6 9.Nd4 =.

5.c5 e6 6.Nf3 Nf6 7.Nh4 Bg4 8.h3 Bh5 9.g4 =.

5.c5 Nf6 6.Nf3 e6 7.e3 b6 8.Nd4 Bg6 9.Qa4 =.

5.d3 d4 6.Nf3 e5 7.Ne5 Qd6 8.Nf3 Qb4 9.Nbd2 +=.

5.d3 e6 6.Nd2 Nf6 7.Ngf3 Nbd7 8.Nh4 dc4 9.dc4 =.

5.d3 Nf6 6.Nd2 e6 7.Ngf3 Nbd7 8.Nh4 dc4 9.dc4 =.

5.cd5 cd5 6.Nf3 Nc6 7.e3 Rc8 8.Bb5 Be4 9.Ne5 =.

5.e3 dc4 6.Bc4 e6 7.Nf3 Nf6 8.Nd4 Be4 9.f3 =.

5.e3 e6 6.Nf3 Nf6 7.d3 Na6 8.c5 Nc7 9.Be2 =.

5.e3 Nf6 6.Bf6 ef6 7.Nf3 Qe7 8.b5 dc4 9.Bc4 =.

5.Nf3 dc4 6.Qc4 Nf6 7.Nc3 Nbd7 8.b5 Rc8 9.Qd4 =.

5.Nf3 Be4 6.Nc3 dc4 7.Qc4 Bf3 8.ef3 Nf6 9.Ne4 =.

5.Nf3 e6 6.Nc3 dc4 7.Qc4 b5 8.Qd4 a5 9.Qd8 =.

5.Nf3 Nf6 6.d3 e6 7.Nbd2 Bd6 8.c5 Bc7 9.e4 =.

5.Nf3 Nh6 6.d3 dc4 7.dc4 a5 8.Nbd2 ab4 9.Qb4 =.

5.c5 b6 6.Qa4 bc5 7.bc5 e6 8.d4 Be7 9.Nf3 =.

5.c5 Qc7 6.h3 Bf5 7.Nf3 Nbd7 8.Nh4 Bb1 9.Rb1 =.

5.c5 Nbd7 6.h3 Bh5 7.Nf3 Bf3 8.Qf3 e5 9.Qf5 =+.

5.c5 e6 6.Nf3 Nbd7 7.Ne5 Bf5 8.e3 a5 9.Nd7 =+.

5.c5 Bf5 6.Nf3 e6 7.Nh4 Bg4 8.h3 Bh5 9.g4 =.

5.cd5 cd5 6.e3 e6 7.Bb5 Nbd7 8.Ne2 Rc8 9.Ng3 =.

5.cd5 Qd5 6.Qg3=+ Nbd7 7.f3 Bh5 8.e4 Qd6 9.e5 =.

5.e3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.c4 Bg4 5.Qb3).

5.e3 e6 6.Nf3 Nbd7 (--> 3.c4 e6 4.Qb3 Nf6 5.e3 Nbd7 6.Nf3 c6).

5.Nf3 dc4 6.Qc4 Bf3 7.gf3 e6 8.Rg1 Nbd7 9.Nc3 =+.

5.Nf3 Nbd7 6.Ne5 Ne5 7.Be5 e6 8.e3 Nd7 9.Bc3 =.

5.Nf3 e6 6.Ne5 Bf5 7.e3 Bd6 8.Be2 Nbd7 9.Nd7 =.

5.Nf3 Bf3 6.gf3 e6 7.Rg1 dc4 8.Qc4 Nbd7 9.Nc3 =+.

5.Bf6 ef6 6.e3 Be7 7.b5 0-0 8.bc6 bc6 9.cd5 =+.

5.Bf6 gf6 6.e3 e5 7.Nc3 d4 8.Nce2 de3 9.fe3 =+.

5.h3 dc4 6.Qc4 Be6 7.Qc2 a5 8.ba5 Qa5 9.e4 =.

5.h3 Bc8 6.cd5 cd5 7.Nf3 e6 8.Na3 Be7 9.Rc1 =.

5.h3 Be6 6.d3 dc4 7.dc4 Bf5 8.Nd2 Nbd7 9.Ngf3 =.

5.h3 Bf5 6.d3 e6 7.Nf3 Nbd7 8.Nbd2 a5 9.ba5 =.

5.h3 Bh5 6.cd5 Qd5 7.Qd5 Nd5 8.a3 Nd7 9.e4 =.

5.a3 dc4 6.Qc4 Nd7 7.h3 Bh5 8.e4 e5 9.Be2 =.

5.a3 e6 6.cd5 cd5 7.h3 Bf5 8.Nf3 Nc6 9.e3 =.

5.Na3 e6 6.Nc2 dc4 7.Qc4 Nd7 8.f3 Bf5 9.e4 =.

5.Na3 f6 6.d4 e6 7.e3 Bd6 8.c5 Bc7 9.f3 =.

5.a4 Na6 6.Nf3 Qb6 7.Bc3 Bf3 8.ef3 d4 9.a5 =.

5.a4 dc4 6.Qc4 Nd7 7.h3 Bh5 8.a5 Rc8 9.a6 =.

5.a4 e6 6.h3 Bf5 7.Nf3 Nd7 8.a5 Be4 9.d3 =.

5.a4 f6 6.d4 e6 7.Nd2 Bf5 8.b5 a6 9.e3 =.

5.c5 b6 6.Qa4 a5 7.cb6 Qb6 8.a3 Qb7 9.e3 =+.

5.c5 Qc7 6.f3 Bf5 7.Nc3 d4 8.Ne4 e5 9.e3 =.

5.c5 Nd7 6.Nf3 e6 7.h3 Bf5 8.d3 Bg6 9.Nbd2 =.

5.c5 e6 6.Nf3 Nd7 7.h3 Bf5 8.d4 b6 9.e3 =.

5.c5 f6 6.d4 b6 7.Nd2 bc5 8.bc5 Nd7 9.Qa4 =.

5.d3 Na6 6.a3 dc4 7.dc4 Qb6 8.Nf3 Nc5 9.Qc2 =.

5.d3 dc4 6.dc4 a5 7.h3 Bh5 8.ba5 Qa5 9.Bc3 =.

5.d3 e6 6.h3 Bh5 7.g4 Bg6 8.Bg2 Nd7 9.Nf3 =.

5.d3 f6 6.e4 de4 7.de4 e5 8.Be2 a5 9.a3 =.

5.cd5 cd5 6.Qa4 Bd7 7.b5 Bf5 8.Nc3 e6 9.Rc1 =.

5.cd5 Qd5 6.Qd5 cd5 7.Nc3 e6 8.f3 Bh5 9.e4 =.

5.e3 e6 6.h3 Bf5 7.Nf3 Nd7 8.cd5 cd5 9.Nc3 =.

5.Nf3 dc4 6.Qc4 Bf3 7.ef3 Nd7 8.Be2 e6 9.0-0 =.

5.Nf3 e6 6.a3 dc4 7.Qc4 Bf3 8.ef3 Nd7 9.Be2 =+.

5.Nf3 f6 6.cd5 cd5 7.h3 Bf3 8.Qf3 e6 9.a3 =.

5.h3 Bf5 6.d3 dc4 7.dc4 Nd7 8.Nd2 a5 9.e4 =.

5.a3 Nc6 6.Qa4 Nh6 7.b5 Na5 8.e3 Bf5 9.Nf3 +=.

5.a3 Nd7 6.h3 Bf5 7.Nc3 e6 8.Rc1 a6 9.Nf3 =.

5.a3 e6 6.h3 Bf5 7.Nf3 Nf6 8.e3 Bd6 9.Nc3 =.

5.a3 f6 6.f3 Bf5 7.d4 e6 8.Nd2 Bg6 9.e4 =.

5.a3 Nf6 6.h3 Bf5 7.Nf3 e6 8.e3 Bd6 9.Nc3 =.

5.Qa4 Qd7 6.b5 Nf6 7.Bd4 a6 8.Nc3 Ne4 9.Rc1 =.

5.Qa4 Bd7 6.Qb3 e6 7.e3 Nf6 8.Nf3 Bd6 9.Be5 =.

5.Nf3 Nc6 6.a3 Nf6 7.b5 Na5 8.Ne5 Nc4 9.Nc4 =.

5.Nf3 Nd7= 6.Qa4 Ngf6 7.Bf6 gf6 8.Nc3 e6 9.Rc1 =.

5.Nf3 e6 6.Ne5 Nf6 7.Ng4 Ng4 8.a3 Nf6 9.e3 =.

5.Nf3 f6 6.h3 Bf3 7.ef3 e5 8.a3 Nc6 9.b5 =.

5.Nf3 Nf6 6.Qa4 Bd7 7.b5 Na6 8.Nc3 Nc5 9.Qf4 =.

5.h3 Bd7 6.e3 Nf6 7.a3 a5 8.b5 e6 9.Nf3 =.

5.h3 Bf5 6.a3 Nc6 7.Nf3 Rc8 8.e3 Nf6 9.Bb5 =.

5.h3 Bh5 6.a3 e6 7.Nf3 Nc6 8.b5 Na5 9.g4 =.

5.a3 a5 6.Nc3 Qd6 7.f3 Bf5 8.e4 ab4 9.ab4 =.

5.a3 Qd6 6.f3 Bd7 7.e4 e6 8.d4 Be7 9.Nd2 +=.

5.a3 Qd8 6.h3 Bf5 7.Nf3 Nf6 8.Nc3 a5 9.b5 =.

5.a3 e5 6.f3 Be6 7.e4 Qd6 8.d4 ed4 9.Qd4 =.

5.a3 Nf6 6.Nc3 Qd6 7.h3 Bf5 8.g4 Bg6 9.Bg2 =.

5.Nc3 Qd6 6.h3 Bd7 7.a3 Nf6 8.Nf3 a5 9.ba5 =.

5.Nc3 Qd7 6.a3 Nf6 7.f3 Be6 8.e3 a5 9.b5 +=.

5.Nc3 Qd8 6.d4 Nf6 7.f3 Bd7 8.e4 e6 9.a3 =.

5.Nc3 Qh5 6.d4 Nf6 7.f3 Bd7 8.e4 e6 9.a3 =.

5.f3 Bc8 6.e4 Qg5 7.d4 e5 8.a3 Bd6 9.Ne2 =.

5.f3 Bd7 6.a3 Nf6 7.e4 Qg5 8.Ne2 a5 9.h4 =.

5.f3 Be6 6.Nc3 Qd8 7.e4 Bd7 8.a3 e6 9.d4 +=.

5.f3 Bh5 6.e4 Qd6 7.a3 a5 8.b5 e6 9.d4 +=.

5.Nf3 Qd6 6.Qb3 Bf3 7.ef3 e6 8.b5 Nf6 9.Nc3 =.

5.Nf3 Nd7 6.a3 e5 7.Nc3 Qd6 8.Ne4 Qg6 9.Ng3 =.

5.Nf3 e6 6.Nc3 Qh5 7.Qb3 Na6 8.h3 e5 9.a3 =.

5.Nf3 Bf3 6.gf3 Qd6 7.a3 Nf6 8.Nc3 e5 9.Bh3 =.

5.Nf3 Nf6 6.Nc3 Qd6 7.a3 Nbd7 8.h3 Bf3 9.ef3 =.

5.h3 Qh5 6.Nf3 Bf3 7.gf3 Nf6 8.a3 a5 9.Nc3 =.

4.a3 Nf6=+ 5.cd5 (5.c5 Be7=+) 5...ed5 (< 5...Qd5 6.Bf6 gf6 7.Nc3=) 6.Nf3 Nbd7 (6...Bd6 7.e3=+) 7.Nd4 (7.e3 Bd6=+) 7...c5 (7...Bd6 8.h3 Be6 9.Nc3=+) 8.bc5 (8.f3 Be6 9.bc5 Bc5=+) 8...Bc5 9.Qb3 Rc8 (9...Be7 10.Nc3 (10.Qb7? Nc5 11.Qb5 Bd7–+) 10...Nc5 11.Qc2=+) 10.f3= (10.Qb7?? Rb8 11.Nc6 Rb7 12.Nd8 Rb2–+) 10...Bh5 11.e3 (11.Qe3 Qe7=+) 11...0-0 (11...Bd4!? 12.Bd4 Ne4–/+) 12.Be2=+ (12.Qb7?? Rb8 13.Qa6 Rb2–+) 12...Bb6 13.0-0 Nc5 14.Qd1 Bg6 15.a4 (15.f4 Nd3 16.Qb3 Nb2 17.Qb2 Be4=+) 15...Ne6 16.Ne6 fe6 17.d4 Bc2 (17...Bc7 18.Ba3 Rf7 19.Qb3=+) 18.Qd2 Ba5 (18...Bf5 19.Nc3=+) 19.Bc3= Bc3 20.Nc3 Qa5 21.Nb1 (21.Ra3 Qb4 22.Rfa1 Bg6=) 21...Qd2=+ 22.Nd2 Rc3 23.Rfe1 (23.Rfc1!?=+) 23...Re3–/+ 24.a5 Rc8 25.a6 b6 26.Bb5 Rec3–/+ 27.Re6 Bd3 28.Bd3 Rd3 29.Nf1 Kf7 30.Rae1 Rc7 31.Ng3 g6 32.Ne2 Ra3 33.Nf4 Rd7 34.Rc6 Ra6 35.Ree6 Ne8 36.Nh3 Re7 37.Ng5=+ Kf8 38.Re7 Ke7 39.Nh7 Ra4 40.Rg6 Rd4 41.Kf2 Rh4–/+ 42.Ng5 Rh2 43.f4 Rh1 44.f5 Ra1 45.Re6+= Kf8 46.g4 Ra4= 47.Kg3 Rc4 48.f6 Rc7 49.Kf4 d4 50.f7 Rf7 51.Nf7 Kf7 52.Re2 a5 53.Ke4 Nf6 54.Kd4 Ng4 55.Rb2 Kf6 56.Rb6 Kg5 57.Rb5 Kh4 58.Ra5 Kh3 59.Ke4 Kh4 60.Kf4 Nf6 61.Rf5 Nh5 62.Kf3 Ng7 63.Ra5 Nh5 64.Ra1 Kg5 65.Rh1 Nf6 66.Rh8 Kf5 67.Rb8 Ke5 68.Rb4 Kf5 69.Rb5+/– Ke6 70.Ra5 Nd5 71.Ke4+/– ½–½. Moreira Romero,Jairo (2330) – Mieles Palau,Daniel (2225), Espe Cup Ecuador, 1999.

4.Qc2 Bb4?? 5.Bg7 Bf5 6.Qb2 +-.

4.c5 Na6?? 5.a3 (5.Qa4!? c6 6.b5 cb5 7.Qg4+-) 5...Qd7 (5...Nf6!?=) 6.Nf3 (6.h3 Bh5+=) 6...Bf3 7.ef3 Nb8 8.Be2 Ne7 (8...Nf6 9.d4+=) 9.0-0+- b6 (9...a6 10.Re1+=) 10.cb6 (10.d4 g6 11.b5 Bg7+=) 10...ab6 11.Nc3 (11.Re1 c5 12.Nc3 c4+-) 11...Nec6 (11...c5 12.Re1+-) 12.Re1 (12.Nb5 f6+-) 12...Nd4 13.Bd3 Be7 14.Ne2 (14.Nd5 Nbc6+- (14...Qd5? 15.Be4 Qb3 16.Qc1+-)) 14...Ne2+- 15.Re2 (15.Qe2 0-0+-) 15...0-0 16.f4 (16.Qc2 g6 17.Qc3 d4 18.Qd4 Qd4 19.Bd4 Nd7+-) 16...Na6 (16...g6+=) 17.g3 (17.Re3 d4 18.Qh5+-) 17...c5= 18.bc5 (18.Re1 cb4 19.ab4 Nb4 20.Bh7 Kh7 21.Qh5 Kg8 22.Bg7 Kg7 23.Qg4 Kh7 24.Qh5 Kg8 25.Qg4 Kh7 26.Qh5 Kg7 27.Qg4 Kh6 28.Qh3 Kg6 29.Qg4 Kh7=) 18...Nc5=+ 19.Bc2 (better 19.Qb1 g6 20.Bc3=+) 19...Ra6 (19...Na4 20.Ba4 Ra4 21.d3=+) 20.Re1 (20.d4 Ne4+=) 20...Ne4 (20...g6 21.Bd4=) 21.Qg4 (21.Be4 de4 22.Re4 Ra5+=) 21...Bf6 (21...g6 22.Qe2 Ra5 23.Be4 de4 24.Qe4 Qd2 25.Bd4=) 22.Bf6 (22.Be5 Be5 23.fe5 Rd8= (23...Nd2? 24.Rad1+-)) 22...Nf6 23.Qe2 Rfa8 (23...Raa8 24.Bd3=) 24.Qd3 (24.Qe5 b5=) 24...Ra5=+ 25.Ra2 Qb5 (25...Qd6 26.a4=+) 26.Qb5= Rb5 27.Rb1 (27.f5 ef5 28.Bf5 g6=) 27...Rb1 28.Bb1 Kf8 (28...g6 29.Rb2=) 29.f3 (29.Rb2 Nd7=+) 29...Rc8 (29...Ke7 30.Kf2=) 30.Rc2= Rc2 (30...Rc5 31.Kf2=) 31.Bc2 Ke7 (31...Ne8 32.a4=) 32.Kf2 Kd6 (32...d4 33.Ke2 Kd6 34.f5=) 33.Ke3 e5 (33...g6 34.Ba4=) 34.fe5+= Ke5 35.f4 (35.d4 Ke6+=) 35...Kd6 36.Kd4 (36.h3 Kc5=) 36...h6= 37.h3 (37.Bb3 g6+=) 37...Nd7 (better 37...Nh5!?–/+) 38.Bd3 (38.Bb3 Nf6=) 38...Nc5 39.Bc2 g6 (39...Nd7 40.Bb3 Nf6 41.g4=) 40.f5 g5 41.g4 Nd7 (41...b5 42.Bb1=) 42.Bd3 (42.Bb3 Nf6=) 42...Nf6 (42...Ne5 43.Bb5=) 43.Bc2 (43.Be2 Ng8=) 43...h5 (43...Nd7 44.Bb3 Nf6 45.a4=) 44.Bd1 hg4 45.hg4 Nd7 46.Bc2 (46.a4 f6=) 46...Ne5 47.Bd1 Nc4 (better 47...Nc6 48.Ke3 Kc5=) 48.a4?? (better 48.Bf3 f6 49.Bd5=) 48...Nd2–+ 49.Bc2? (49.Kc3 Nc4 50.Kb4–+) 49...Nf3 50.Ke3 (50.Kc3 Ne5 51.Bd1 Kc5–+) 50...Nh2 (better 50...Ne5 51.Bd1–+) 51.Kd4? (51.Bd1 Ke5 52.Be2–+) 51...Ng4 52.Bd3 (52.Bb3 Nf6–+) 52...Nh6 53.Ke3 (53.f6 g4 54.Bh7 Ke6–+) 53…Nf5 0–1. valpa – rchessmaster, playchess.de, 2003.

4.c5 Nf6 =.

4.Nf3 Bb4?? 5.Bg7 dc4 6.Bh8 +-.

4.Nf3 dc4?! 5.Ne5 Bf5 6.Nc4 +=.

4.Nf3 Nd7 5.c5 (5.Qa4 c6 6.cd5 Bf3 7.ef3 Nb6+=) 5...Bf3 (5...Ngf6 6.e3+=) 6.ef3= Ne7 (6...Ngf6 7.Be2=) 7.a3 b6 (7...Ng6 8.Nc3=) 8.cb6 (8.d4 c6=) 8...ab6 9.Nc3 (9.Qc2 Nf5+=) 9...c6 10.Rc1 (10.f4 Qc7+=) 10...Nf5 11.Bd3 (11.Ne2 c5+=) 11...Nh4–/+ 12.0-0? (better is 12.Kf1!?–/+) 12...Qg5–+ 13.g3 Qd2! 14.gh4 (14.Qd2 Nf3 Double attack (14...Nf3 Decoy)) 14...Qb2 15.Rc2 Qa3 16.Ra2 Qc3 (16...Qa2!? 17.Na2 Ra2 18.Qb3–+) 17.Ra8–/+ Ke7 18.b5 c5 19.Ra7 g6 20.Be4 (20.Re1 Bg7–+) 20...Kd6 (20...Bg7 21.Re1 Kd6 22.Bd5+-) 21.Re1 (21.Qe2 Qe5 (21...de4?? 22.Rd1 Qd4 23.Rd4 cd4 24.Qe4+-) 22.Qd2 Bg7–+) 21...Qd4 22.Qd4 (22.Qc1 A) 22...de4 23.Rd1 Bg7 24.Qf4 Ke7 25.Rd4 (25.Rd7?! Kd7 26.Rd4 Bd4+=) 25...Bd4 26.fe4+-; B) 22...Bg7–+) 22...cd4 23.Rc1 (23.Rd1 Ne5 (23...de4 24.Rd4 Kc5 25.Rdd7+=) 24.Bb1 Nf3 25.Kg2 Ne5–+) 23...Nc5 (23...Ne5 24.f4 de4 25.fe5 Ke5 26.Rf7–+) 24.Bb1 f5 25.Rd1 Be7 (25...e5!? 26.f4 e4 27.Rd4–+) 26.Rd4–/+ Bf6 27.Rd2 (27.Rd1 Bh4 28.f4 Bf6–/+) 27...Bh4 (27...Nb3 28.Rda2–+) 28.Rda2 (28.f4 Bf6–/+) 28...Bg5 (28...e5 29.Kf1–+) 29.Ra8 (29.Rf7 Bf4–+) 29...Ra8 30.Ra8 Bf4 (30...Nb3 31.Bd3–+) 31.h4 (31.Rc8 Kd7 32.Rg8 Nb3–+) 31...Be5 (31...Nb3 32.Bd3–+) 32.Kg2 (32.Rc8 Nd7–+) 32...Nd7 33.Ra4 (33.Bc2 f4–+) 33...Bc3 (33...Bf6 34.Kg3–+) 34.f4 Bd2 (34...Ba5 35.Ra1–+) 35.Kf3–/+ Ba5 36.Ra2 (36.Ra1 e5 37.fe5 Ne5 38.Kg3 Kc5–+) 36...Nc5 37.Ke3 Bc3 38.Ra7 Nd7 39.Kf3 Bf6 40.Kg3 Bd4 41.Bd3 Bb2 (41...h6 42.Ra8 Ke7 43.Ra7–/+) 42.Be2 h6 43.Ra8 Nf6 (43...Ke7 44.Ra7–/+) 44.Kf3 Bd4 (44...Ke7 45.Rh8–/+) 45.Ra4 (45.Rh8 h5 46.Rh6 Ne4–/+) 45...Bc3 ½–½. objorn (2440) – marekt (2240), gameknot.com, 2016.

4.Nf3 Nf6 5.c5 a5 6.a3 ab4 7.ab4 Ra1 8.Ba1 Be7 9.h3 Bh5 10.Qa4 Qd7 11.Qa3 (11.Qd7 Nbd7 12.g4 Bg6=) 11...Bf3=+ 12.ef3 d4 (12...0-0 13.Be5=+) 13.Bc4 (13.Qa8 0-0 14.Qb7 d3=) 13...b6 14.0-0 0-0 15.cb6 cb6 16.Qb3 Rd8 17.Rc1 Qd6 18.Na3 (18.Bb2!?=+) 18...Qb4-/+ 19.Nb5 Qd2 20.Rd1 Qb4 21.Qb4 Bb4 22.Rd4 Nc6 23.Rd8 Nd8 24.g3 Bc5 25.Nd4 Nb7 26.Nb5 Na5 27.Be2 Nb3 28.Bb2 Nd5 29.Kg2 g6 30.Be5 Kf8 31.Bb2 Ke7 32.Be5 Nb4 33.Bc4 Nd2 34.Be2 Kd7 35.Bc3 Nb1 36.Bf6 Nc2 37.g4 Nb4 38.Be5 Nd5 39.Kg3 (39.g5 Be7 40.f4 f6 41.gf6 Bf6-/+ (41...Nf6?! 42.Bd3 Nd2 43.Nd4=+)) 39...f6-+ 40.Bb2 Bd6 41.Nd6 Kd6 42.h4 e5 43.Bd3 Nbc3 44.h5 (44.Bc3 Nc3 45.h5 gh5 46.Bh7 Ne2 47.Kh4 hg4 48.fg4 b5-+) 44...Nf4 45.hg6 hg6 (45...Nd3?? 46.Ba3 Kd5 47.gh7+-) 46.Be4 Ne4 (46...Nce2!? 47.Kh2-+) 47.fe4 Nd3 48.Ba3 Kc6 49.Be7 Kb5 50.Kf3 Kc4 51.Bf6 b5 52.Ke3 b4 53.Kd2 (53.Be7 b3 54.Ba3 g5-+) 53...b3 (53...Nf2?! 54.Be5 Ng4 55.Bd6-+) 54.f3 Ne1!! 55.Kc1 (55.Ke1 b2 Passed pawn) 55…Nf3 (55...Nf3 56.Bd8 Kd3-+) 0-1. marekt (2230) - deutschlandcup (2255), gameknot.com, 2016.

5.e3 dc4 6.Bc4? (better is 6.b5=) 6...b5–+ 7.Bb5 cb5 8.Qb5 Nd7 9.f3 Bf5 10.e4 Rb8 11.Qa4 (11.Qa6 Rb4 12.Bc3–+) 11...Rb4 12.Qa7 (12.Qc2 Bg6 13.a3–+) 12...Be4 (< 12...Rb2 13.ef5 Nc5 14.Kf1 Qd3 15.Kf2–+) 13.Nc3 (13.fe4 Qh4 14.Qf2 Qe4 15.Ne2 Rb2 16.Nbc3–+) 13...Bb7 14.Ba3 (14.Nd1 Bc5 15.Qa3 Re4 16.fe4 Ba3 17.Bg7 Qh4 18.Nf2 Be4 19.Bh8 Bg2 20.Nf3 Bf3 21.Rg1–+) 14…Bc5 (15.Qc5 Nc5 16.Bb4 Nd3 17.Ke2 Nb4–+) 0–1. thotares (1630) – pierre (2145), internet, 2007.

5.h3 Bf5 6.c5 Nd7 7.e4? (better is 7.d4!?=+) 7...de4–+ 8.Qb3 (8.a3 a5 9.Qd1 b6–+) 8...Ngf6 (8...a5 9.a3–+) 9.a3 Nc5 (better is 9...a5–+) 10.bc5= Nd7 (< 10...Bc5 11.Qb7 0-0 12.Qc6+/–) 11.Bd4 (< 11.Qb7 Rb8 12.Qc6 Rb2–+) 11...e5 12.Be3 Nc5 13.Bc5 (13.Qc3!? Qd6 14.Ne2=+) 13...Bc5–/+ 14.Ne2 (14.Qg3 0-0–/+) 14...Qf6 15.Qg3 Bg6 (15...0-0 16.Nc1–/+) 16.Nc1 0-0 17.Nb3 Bd4 18.Nc3 h5 19.h4 b5 20.Rc1 Bb6 21.Nb5? cb5–+ 22.Bb5 Rfc8 23.0-0 Rab8 24.a4 Qf4 25.Qf4 ef4 26.Rc8 Rc8 27.Rc1 Rc1 28.Nc1 Kf8 29.Kf1 Bd4 30.Nb3 Bb6 31.Nc1–/+ Ke7 32.d3 f5 33.Ne2 Bc7 34.Nd4 Kf6 35.Nc6 a5 36.Ke2 Bf7 37.Nd4 Bb6 38.Nc6 Bd5 39.Nb8 Ke6 40.de4 fe4 41.Nd7 f3 42.gf3 ef3 43.Kf1 Bd8 44.Nf8 Kf5 45.Bd7 Kf6 46.Bb5 Be4 47.Nd7 Kf5 48.Nc5 Bd5 49.Bd7 Ke5 50.Nd3 Kd4 51.Nf4 Bc4 52.Ke1 g5 53.hg5 Bg5 54.Ne6 Be6 55.Be6 h4 56.Bg4 Ke4 57.Kf1 Be7 ½–½. Junker,Anders – Nittschalk,Karl, 1.b4 Thementurnier, 2000.

5.h3 Bf5 6.cd5 ed5 7.b5 a6 8.e3 Ne7 9.Nf3 Nd7 10.bc6 Nc6 11.Nc3.

5.h3 Bf5 6.cd5 ed5 7.b5 Ne7 8.Nf3 (8.e3 Nd7 9.Nf3 Nc5 10.Qd4 Ne6 11.Qc3; 8.Nc3 Nd7 9.bc6 bc6 10.d4 Nb6 11.Qa6) 8...Nd7 9.bc6 bc6 10.Bd4 Ng6 11.Na3.

6.b5 Bd7 7.bc6 Nc6 8.e4? (8.Qb5 Nb4 9.Qb7 Nc2 10.Kd1 Rb8 11.Qb8 Qb8 12.Kc2 Qc7 13.Nc3 d4–+) 8...Qb6 (8...Nb4 9.Qb3 de4=+) 9.Bb5= 0-0-0 10.ed5 Nb4 11.Bd7 Rd7 12.Ba3 (12.Qb3 Rd5 (12...Nd5?! 13.Ne2=) 13.Kf1 Kd8=) 12...Nf6 (12...Nd3 13.Ke2 Nf2 14.Bf8 Nh1–+) 13.Bb4= Bb4 14.a3 Bc5 15.Qc4 Rc7 16.Qf4 Bf2! 17.Qf2 (17.Kd1 Bg1 18.Qg3–+) 17...Rc1 (17...Re8 18.Qe3 Re3 19.de3 Qe3 20.Ne2 Rc1) 18.Ke2+= Qb5 19.d3 Re8 (19...Rb1 20.Rb1 Qb1 21.Qa7 Qc2 22.Kf1 Qd3 23.Ne2 Qd1 24.Kf2 Ne4 25.Ke3 Qb3 26.Ke4 Re8 27.Kf4 Re2 28.Qc5 Kd7 29.Rc1 g5 30.Kg5 Rg2 31.Kf4 Qa4 32.Ke3 Qb3 33.Rc3+/–) 20.Kf3 Qd3 (21.Kf4 Re4 22.Kg5 Rg4#) 0–1. Rabold,D – Nguyen,Patrick, Courrier/89/6/168, 1988.

6.b5 Bf5 7.e3 c5 8.Nf3 Nd7 9.Qf4 Bg6 10.Nh4 Bh5 11.Nf5 Ngf6 12.Nc3 Qb6 13.Bd3 c4 14.Bc2 Bg6 15.0-0 0-0-0 (15...Nc5 16.Qd4 Qe6 17.Ng7 Bg7 18.Bg6 hg6 19.Qc5=) 16.Rac1 h5 17.Qf3 Qc7 18.Nd5 Nd5 19.Qd5 Nf6 20.Qe5 (20.Qf3 Ng4 21.Ng3 Nh2 22.Kh2 h4+/–) 20...Rd2 21.Bb1 Rd7 22.Qc3 Rd5 23.Qc4 Qc4 24.Rc4 Kd8 25.e4 Rd2 26.Bc3 Rd7 27.Rc1 Bf5 28.ef5?? (28.Bf6 gf6 29.ef5 Bg7=) 28...Ke8?? (28...Nd5 29.f6 Nc3 30.R4c3 gf6 31.Rc8 Ke7 32.Re1 Kd6+-) 29.Rc8+- Rd8 30.Rc7 Ba3 31.Re1 Kf8 32.Rb7 Bc5 33.Bc2 Ng4 34.Re2 Kg8 35.Bb3 Nh6 36.f6 g6 37.Re5 Rh7 (37...Bb6+-) 38.Rc5 Nf5 39.Rbc7 Nd6 40.Be5 Rh8 41.g4! (41...hg4 42.Bd6 Rd6 43.Rf7 Rd1 44.Kg2 Rh2 45.Kh2 Rd8 46.Rg7 Kh8 47.Rcc7 g3 48.Kg2 Rd7 49.Rc8 Rd8 50.Rd8#) 1–0. Luzuriaga,Norberto Horacio – Rueberg,Mathias, KO–027 VCC, 2002.

6.Nc3 Ngf6 7.a3 Bd6 =+.

6.e3 Bb4 7.Bg7 Bd2 8.Qd2 Bf3 9.gf3 +-.

7.e3 Be7 8.d4 0-0–/+ 9.Nd2 (9.Nf3 a6 10.Ba3 Ne4–/+) 9...Qb6 (9...a6 10.bc6 Nc6 11.Ngf3–/+) 10.Qb3–/+ Nbd7 (10...cb5 11.Ngf3–/+) 11.h3 (11.bc6 bc6 12.Ngf3 Rfe8–/+) 11...Bf5 12.a4 (12.bc6!? bc6 13.Ngf3–/+) 12...c5 13.a5 Qd6 (13...Qc7 14.Ngf3–/+) 14.Ba3 (14.Ngf3 Ne4 15.Ne4 de4–/+) 14...Qc7 (14...Bd8 15.Qc3 Ne4 16.Ne4 Be4 17.Nf3 Bf3 18.gf3–/+) 15.Qc3 Rfc8 (15...Rfe8 16.Ngf3–/+) 16.Ngf3 Qd8 17.Bc5 (17.Qb2!?–/+) 17...Nc5–+ (worse 17...Rc5 18.dc5 Nc5 19.Be2+-; 17...Bc5?! 18.dc5 Nc5 19.Qd4–/+) 18.dc5 Ne4 (worse 18...Bc5 19.Be2 Qe7 20.0-0–/+) 19.Qb2 (19.Ne4 Be4 20.Qd2 Rc5–+) 19...Nc5 (19...Bf6 20.Nd4 Nc5 21.N2f3–+) 20.Nd4 Bf6 21.N2f3 Nd3 (21...Be4 22.Be2 Bf3 23.gf3–+) 22.Bd3–/+ Bd3 23.Rg1 (23.Qb4 Qe8–+) 23...Qd7–+ 24.Rd1 (24.g4 Be4 25.g5 Bd4 26.Nd4 Qh3–+) 24...Be4 25.Qd2 (25.Qb3 Rc5–+) 25...Rc4 26.Kf1 (26.Ke2 Rac8 27.Kf1 h6–+) 26...Bf3 (26...Rac8 27.Rh1–+) 27.Nf3 Qb5 28.Qd5 Rc5 (28...Qa6 29.Qd6 Qa5 30.Qd3–+) 29.Qd3 Qa5 30.g4 (30.g3 Rd8 31.Qb3 Rd1 32.Qd1 Qc7–+) 30...Rd8 31.Nd4 (31.Qb3 Rd1 32.Qd1 Qc7–+) 31...b5 32.Rb1 (32.Kg2 Qb6–+) 32...Qa4 (32...b4 33.Kg2–+) 33.Qb3 (33.Kg2 Bd4 34.ed4 Qd4 (34...Rd4?! 35.Qf3 g6 36.Ra1–/+) 35.Qd4 Rd4–+) 33...Qb3 (33...Qa6 34.Kg2–+) 34.Nb3 (34.Rb3? Bd4 35.ed4 Rd4–+) 34...Rcd5 (34...Rc3 35.Ke2–+) 35.e4 R5d6 36.Ke2 Ra6 (36...g5 37.Rgc1–+) 37.Rgd1 (37.Nc1 Ra5–+) 37...Ra2 38.Ke3 Rd1 39.Rd1 Ra3 40.Rd3 a5 41.Nc1 (41.e5 Bh4 42.Ke4 a4–+) 41...Rd3 42.Kd3 (42.Nd3 a4–+) 42...g5 43.Kc2 (43.Kd2 a4–+) 43...Kf8 44.Nd3 (44.Kb3 Ke7–+) 44...Ke7 45.Kb3 (45.e5 Bg7 46.Kc3 Kd7–+) 45...Kd6 46.Ka3 Kc6 (46...a4 47.Kb4–+) 47.Kb3 (47.f4 gf4 48.Nf4 Kc5–+) 47...a4 48.Kc2 (48.Ka3 Be7 49.Kb2 Bd6–+) 48...Bd4 49.f3 (49.Kb1 Bc3 50.f4 h6–+) 49...h6 50.Kd2 (50.Kb1 Bc3 51.f4 b4–+) 50...Kb6 51.Kc1 (51.Nb4 Kc5 52.Nc2 b4–+) 51...Ka5 52.Kc2 (52.Kb1–+) 52...b4 53.Nc1 Kb5 54.Ne2 (54.Kb1 b3 55.e5 Kc4–+) 54...b3 55.Kb1 Kc4 0–1. Myrberg,Johnny – Miraglia,Jorge, email 4AMM–F, 1998.

7.Nf3 Nbd7 8.bc6 bc6 =+.

7.Bf6 Qf6=+ 8.Nc3!? d4 9.Rc1–/+ (9.d3 Qe5 10.h3 dc3 11.hg4 c2 12.d4) 9...dc3 10.Qg4 cd2 11.Kd2 Qb2 12.Rc2.

7.Bf6 Qf6=+ 8.Qg4?? Qa1–+ 9.Qc8 Ke7 10.Qb7 Nd7 11.bc6 Rb8 12.Qd7 Kf6 –+.

7.b5 Be7 8.h3 Bf5 =+.

7.h3 Be6 8.Nf3=+ (8.d4 Bd6 9.b5 Ne4 10.Nf3 a6 11.Ba3 0-0 12.Bd3; 8.a3 b5 9.Qc2 a5 10.ba5 Ra5 11.Nf3 Bd6 12.Nd4) 8...b5 9.Qb3 (9.Qa5 Qa5 10.ba5 Be7 11.Be2 a6 12.d4) 9...d4 10.Qd3 de3 11.Qd8 Kd8 12.fe3.

8.d3 b5 9.Qb3 a5 10.ba5 Bd6 11.Bc3 Na6 12.Qb2.

8.Nf3!?= Bd6 9.Nd4 Be4 10.d3 Bg6 11.a3 Nbd7 12.Be2.

8.g4 Be4 9.f3 Bg6 10.b5 Bd6 11.Ne2 0-0 12.Nf4.

8.g4 Be6 9.b5 (9.Bd4 Bd6 10.g5 Nh5 11.h4 h6 12.Nf3; 9.Nf3 b5 10.Qb3 d4 11.Qd3 de3 12.Qd8; 9.Ne2 b5 10.Qb3 d4 11.Qd3 Ba2 12.Bg2; 9.f4 Ne4 10.Nf3 Be7 11.Rg1 0-0 12.f5) 9...Bd6 10.Bd3 h6 11.Ne2 c5 12.Nf4.

8.g4 Bg6=+ 9.b5 c5 10.Nf3 c4 11.Ne5 Nbd7 12.Ng6.

8.g4 Bg6=+ 9.d3 b5 10.Qb3 a5 11.ba5 Qa5 12.Bc3.

5.a3 Be7 6.Nf3 (6.d3 d4=+) 6...Nbd7 (6...0-0 7.e3=+) 7.h3 (7.cd5 ed5 8.Nc3 c6=+) 7...Bf5 (7...dc4 8.Qc4 Bf3 9.gf3=+) 8.Nc3 (8.d3 a5=) 8...c6 (8...dc4 9.Qc4 Nb6 10.Qd4=+) 9.Nh4 (9.d3 a5=) 9...dc4=+ 10.Qc4 Nb6 11.Qb3 Ne4 12.Nf3 Bf6 ½–½. Collas,Didier (2445) – Benitah,Yohan (2410), Cap d'Agde op, 2006.

5.cd5 Qd5 6.Qc3 (6.Qd5!? ed5 7.Bf6 gf6 8.a3=) 6...Nc6=+ 7.a3 Bd6 (7...a5 8.ba5 Bd6 9.f3=) 8.Qc1 (8.e3 0-0=+) 8...Qg5 (8...Nd4!? 9.Bd4 Qd4–/+) 9.g3=+ 0-0 (9...Ne7 10.Bg2 c6 11.h3=) 10.Bg2= Nd8 (10...a5 11.Bc6 bc6 12.f3=) 11.Nf3 (11.f3 Bh5=) 11...Bf3 12.Bf3 a5 13.ba5 Ra5 14.0-0 (14.d4 Qg6=) 14...Ng4 (14...Rc5 15.Bc3=) 15.d4 Qh5 16.h4 f5 17.Nd2 1–0. Well,Joseph – Canon,Patrick, LUX–ch1B Luxembourg, 2001.

5.cd5 Nd5 6.Qg3 Bf5 =+.

5.e3 dc4 6.Qc4 Nbd7 7.Nf3 (7.Bf6!? Qf6 8.Nc3=) 7...Bf3=+ 8.gf3 c6 9.Rg1 Nb6 10.Qc2 (10.Qh4 Nfd5 11.Qd8 Rd8=) 10...Bb4 (10...Qd6!?–/+) 11.Rg7= Qe7 12.Nc3 Ba3 13.0-0-0 (13.Ba3 Qa3 14.Ne4 Ne4 15.fe4 e5=) 13...Bb2=+ 14.Qb2 0-0-0 15.Be2 Rd7 (15...Rhg8 16.Rdg1=+) 16.Ne4 (16.d4 Rg8 17.Rg8 Ng8=) 16...Ne4=+ 17.fe4 Na4 18.Qc2 Qa3 (better is 18...Qf6!? 19.Rg2 Qa1 20.Qb1 Qb1 21.Kb1 Rhd8–/+) 19.Kb1= Qb4 20.Kc1 Qa3 21.Kb1 Qb4 22.Kc1 Qa3 ½–½. Vasut,Karel (2165) – Markovic,Milan2 (2170), MOR–chT2S, 2003.

5.e3 c6 6.cd5 cd5 (6...ed5 7.Be2 Be2 8.Ne2 Bd6 9.0-0 0-0=+; 6...Qd5 7.Qd5 cd5 8.a3 Nbd7 9.Nc3 Rc8=+) 7.Bb5 Nbd7 8.Ne2 Bd6 9.Ng3 e5 =+.

5.e3 c6 6.Nf3 Nbd7 (--> 5.e3 Nbd7 6.Nf3 c6).

5.e3 Nc6 6.b5 Na5–/+ 7.Qc3 Nc4 8.Bc4 dc4 9.Qc4 Bf5 (9...Bd6 10.Bf6 Qf6 11.Nc3=+) 10.a4 (10.Bf6 Qf6 11.d4 Qg6–+) 10...Bd3–/+ 11.Qd4 Qd4 (11...Be7 12.Nf3–/+) 12.Bd4 Bd6 13.Ne2 (13.Bf6 gf6 14.Nf3 a6 15.ba6 Ra6–/+) 13...e5 14.Bb2 0-0 (14...Rd8 15.f4 Nd7 16.Ba3–/+) 15.Nc1 (15.f4 Nd7–/+) 15...Bf5 (15...Be4 16.0-0–/+) 16.0-0 (16.f4 Nd7–/+) 16...Rfe8 (16...a6 17.d3–/+) 17.Na3 (17.f4 Rad8=+) 17...Be6 18.d3 Nd7 19.Rd1 (19.Nc4 a6=+) 19...Rad8 (19...Bg4 20.f3 Be6 21.Nc4=+) 20.Nc4=+ Bc4 (20...Rc8 21.a5=+) 21.dc4= Nb6 22.c5 Bc5 23.Nd3 Bf8 24.a5 Nc4–/+ 25.Bc3 e4 26.Nf4 Na3 27.b6 ab6 28.ab6 cb6 29.Nd5 b5 30.Ba5 Rd6 31.Ra3 Re5 32.Nf6 gf6 33.Raa1 b4 34.Rd6 Bd6–+ 35.Bd8 Kg7 36.Rd1 Bb8 37.Kf1 Rb5 38.Rb1 b3–+ 39.Be7 Be5 40.Ke2 b2 41.Kd2 Rd5 42.Kc2 Rd1?? 43.Kd1+- (43...Bh2 44.Rb2+-) 1–0. Zylla,Johannes – Lutterbeck,U, corr, 1995.

5.e3 Nc6 6.cd5 Qd5 7.Qd5 ed5 8.a3 Be7 9.Nf3 Bf3 =.

5.e3 Nc6 6.f3 Bf5 7.cd5 Nd5 += (< 7...Nb4 8.e4+=).

5.e3 Bd6 6.c5 (6.f3 Bf5 7.c5 Be7 8.Ne2 0-0 9.g4 Bg6=+) 6...Be7 7.Bd3 Nbd7 8.f3 Bh5 9.Ne2 Bg6 =.

5.e3 Be7 6.cd5 ed5 7.Be2 0-0 =.

5.e3 Be7 6.Be2 0-0 7.Bg4 Ng4 8.Nf3 Na6 9.c5 Qd7 =.

5.e3 Be7 6.Nf3 Nbd7 (6...Bf3 7.gf3 0-0 8.Rg1=+) 7.Nc3 (7.cd5 ed5 8.Be2 c5=+) 7...c6 (7...a5 8.ba5 Nc5 9.Qd1=+) 8.Be2 (8.cd5 ed5 (< 8...Nd5 9.Nd5 cd5 10.Bg7+=) 9.Be2 0-0=) 8...0-0 (8...Bf3 9.gf3 dc4 10.Qc4–/+) 9.h3 (9.cd5!? cd5 10.Rc1=) 9...dc4 10.Bc4 (10.Qc4 Bf3 11.gf3 Ne5=+) 10...Bf3 11.gf3 Ne5 12.d4 (12.Be2 Nd3 13.Bd3 Qd3–/+) 12...Nf3 (12...Nc4 13.Qc4 Nd5 14.a3–/+) 13.Ke2 Nh4 14.Rag1 (14.Rac1 Nd5 15.b5 Nf5–/+) 14...b5 15.Bd3 a5 16.ba5 (16.a3 ab4 17.ab4 Nd5–/+) 16...Qa5 17.d5? (better is 17.Ne4 Nd5 18.Ra1–/+) 17...ed5–+ 18.Qc2 g6 19.Rg3 (19.Nb1 Rfc8 20.a3–+) 19...b4 20.Nd1 (20.Nb1 c5 (20...Qa2?! 21.Nd2–+) 21.Nd2 c4 (21...Qa2?! 22.Ra1 Qa1 23.Ba1 Ra1 24.Qb2–+) 22.Nc4 dc4 23.Bc4 Qh5 24.Ke1 Nf3 25.Kf1 Rfc8–+) 20...c5 (< 20...Qa2 21.Qc6 Rfc8 22.Qb7–+) 21.Rhg1 (21.a3 c4 22.ab4 cd3 23.Qd3 Qb4–+) 21...c4 22.Bg6 (22.Bc4 Rfc8 23.Bf6 Rc4–+ (23...dc4?! 24.Be7 Nf5 25.a3 Ng3 26.fg3 ba3 27.Bf6–+; < 23...Bf6 24.a3–+)) 22...fg6 23.Rg6 (23.a3 ba3 24.Bf6 Bf6–+) 23...hg6 24.Rg6 Kf7 (25.Rf6 Bf6 26.Qh7 Ke6 27.Bf6 Rf6 28.Qh4 Qa2 29.Kf1 Rg6–+) 0–1. Okon – Svensson, Police open Poland, 1995.

5.Nf3 dc4 6.Qc4 Bf3 7.ef3 Nbd7 =+.

5.Nf3 Nc6 6.a3 dc4 7.Qc4 a6 8.Ne5 Ne5 9.Be5 Bd6 =+.

5.Nf3 Nbd7 6.Nc3 a5 7.a3 dc4 8.Qc4 ab4 9.ab4 Ra1 10.Ba1 Nb6 =+.

5.Nf3 Nbd7 6.d4 Bf3 (6...dc4 7.Qc4 Nb6 8.Qb3–/+ Qd5 9.b5 Qb3–/+) 7.ef3=+ dc4 8.Bc4 Nb6 9.Nd2 (9.0-0 Nfd5=+) 9...Nfd5 (9...Bd6=+) 10.a3 Be7 (10...Bd6 11.0-0–/+) 11.Ne4 0-0 12.0-0 a5 13.b5 a4 14.Qc2 Nc4 15.Qc4 Nb6 (15...Bd6 16.Rfe1=+) 16.Qc3= Nd5 17.Qc4 Ra5 18.Nc5 (18.Bc3 Nc3 19.Nc3 Bd6=+) 18...Nb6 (18...Qe8!?–/+) 19.Qb4 Ra7 20.Qc3 Qd5 21.Rac1 Bd6 22.Ne4 (22.Rfe1!?=+) 22...Qb5–/+ 23.Nd6 cd6 24.d5 e5 25.Qe3 (25.Rb1!? Qd5 26.Rfd1 Qa2–+) 25...Ra6 (25...Qb2?! 26.Rb1 Nd5 27.Qa7 (27.Rb2? Ne3 28.fe3 Rc8–+) 27...Qa3 28.Rb7=+) 26.Rfd1 Nd5 27.Qd2 (27.Qd3 Qd3 28.Rd3 Nf4–+) 27...Nf4 28.Rc2 Ne6 (28...Rc6 29.Kh1–+) 29.Bc3 (29.Ba1 Rd8–+) 29...h6 (29...Rc6 30.Bb4 Nd4 31.Rc6 bc6 32.Re1–+) 30.g3 (30.Rb2 Qc6–+) 30...Rc8 31.f4 (31.Bb4 Rc2 32.Qc2 Nd4–+) 31...ef4 32.gf4 (32.Bb4 Rc2 33.Qc2 Rc6–+) 32...Qf5 33.Re1 (33.f3–+) 33...Qg4 34.Kf1 Nf4 35.f3 Qf3 36.Qf2 Qd3 (37.Ree2 Ne2 38.Qe2 Qh3 39.Qg2 Qg2 40.Rg2 Rc3–+) 0–1. Kokje,Aron – Donaldson,John W, Bermuda–B, 1995.

5.Nf3 Nbd7 6.cd5 ed5 7.Nd4 Nb6=+ 8.e3 Bd6 9.Bb5 Bd7 =.

5.Nf3 Nbd7 6.cd5 Nd5 7.a3 a5 8.b5 N5f6 9.h3 a4 =.

5.h3 Bh5 (--> 1.b4 d5 2.Bb2 Bg4 3.h3 Bh5 4.c4 e6 5.Qb3 Nf6).

6.a3 a5 7.cd5 ed5 8.Be2 +=.

6.a3 c6 7.cd5 cd5 8.Nc3 a6 (8...Rc8 9.Bd3=) 9.Nge2 (9.Rc1 Bd6=) 9...Bd6 10.f3 (10.Rc1 Rc8=) 10...Bh5+= 11.Nd4 (11.f4 Rc8+=) 11...0-0 (11...Be5 12.Nce2+=) 12.f4 (12.g4 Bg6+=) 12...Rc8 13.Bd3 Rc7 (13...Nb6 14.Rc1+=) 14.0-0 (14.h3 Qe7=) 14...Qe7 (14...Nb6 15.Rac1+=) 15.Rac1 (15.Nce2 Be2 16.Be2 Ne4=) 15...Rfc8 16.Nce2 Rc1 17.Rc1 Rc1 18.Nc1 Ng4 (18...Ne4 19.Be4 de4 20.Qc2=) 19.Nf3 e5 (19...Qd8 20.Qc2 Ngf6 21.Ne5=) 20.Qd5 (20.Qc3 f6 21.Bc2 ef4 22.ef4 Bf4=) 20...Ndf6 21.Qa5 (21.Qc4 e4 22.h3 Ne3 (worse is 22...ed3 23.Qc8 Qf8 24.Qf8 Kf8 25.hg4 Ng4 26.Nd3+/–) 23.de3 A) 23...Bf3? 24.Bc2+- (24.gf3?! ed3 25.Qd3 Qe6+=); B) 23...ef3 24.Qc8 Ne8=) 21...e4= (worse is 21...ef4 22.h3 Nh6 23.Qg5+=) 22.h3 ef3 23.hg4 Bg4 24.Qg5 h6 25.Qh4 Qc7 26.Nb3 (26.Qg3 fg2 27.Nb3 h5+=) 26...Be6 27.Nd4 fg2 28.Ne6 fe6 29.Qh3 Kf7 30.Qg2 Be7 31.Bc3 Bd8 32.Bc2 Qd7 33.Bb3 Qb5 34.Qh3 Nd5 35.Qh5 Kf8 36.f5 Nc3 37.Be6 Qe8 38.Qe8 Ke8 39.dc3 b6 40.Bc8 a5 41.Kf2 Bf6 42.ba5 ba5 43.c4 Ke7 44.Kf3 Kd6 45.Kg4 Bb2 46.a4 Kc5 47.Ba6 Kd6 48.Bb5+/– Be5 49.Kf3 Bb2 50.Ke4 Bf6 51.Ba6 (51.Be8 Kc5+/–) ½–½. Rohde,Friedhelm – Rudbeck,Joergen, corr 3GMM–F, 2002.

6.a3 c6 7.h3 Bf5 8.Nf3 (8.cd5 A) 8...ed5 9.Nf3 (9.Ne2 Bd6 10.Nd4 Bg6 11.Nc3 a5 12.Be2 ab4 13.ab4) 9...Bd6 10.Be2 a5 11.Nd4 Bg6 12.Nc3 ab4 13.ab4; B) 8...cd5 9.Nf3 (9.Nc3 Bd6 10.Nf3 0-0 11.Nd4 Bg6 12.Rc1 Rc8 13.Be2) 9...Bd6 10.Nc3 0-0 11.Nd4 Bg6 12.Be2 Rc8 13.Rc1; C) 8...Nd5 9.d3 (9.Nc3 Nc3 10.Bc3 Nf6 11.Nf3 Be7 12.Be2 0-0 13.Bd4) 9...N5f6 10.Nf3 a5 11.e4 Bg6 12.Nbd2 ab4 13.ab4; 8.Nc3 dc4 9.Bc4 Ne5 10.Nf3 Nc4 11.Qc4 Bd3 12.Qb3 Be7 13.Ne5) 8...Bd6 (8...dc4 9.Bc4 (9.Qc4 Nb6 10.Qb3 Be7 11.Nc3 0-0 12.Nd4 Bg6 13.Be2) 9...Bd6 10.0-0 0-0 11.Nc3 Ne5 12.Ne5 Be5 13.Ne2; 8...Be7 9.cd5 (9.Nc3 0-0 10.cd5 cd5 11.Be2 Nb6 12.Rc1 Nc4 13.g4) 9...cd5 10.Nc3 0-0 11.Be2 Nb6 12.Nh4 Rc8 13.Nf5) 9.c5 (9.Nc3 0-0 10.c5 Bc7 11.Nh4 Ne4 12.Nf5 ef5 13.Ne4) 9...Bc7 (9...Be7 10.Nc3 a5 11.Be2 ab4 12.ab4 Ra1 13.Ba1) 10.Nh4 (10.Be2 a5 11.Nc3 ab4 12.ab4 Ra1 13.Ba1) 10...0-0 (10...Bb1 11.Rb1 0-0 12.Be2 Ne5 13.Nf3) 11.Be2 (11.Nf5 ef5 12.Be2 Qe7 13.0-0) 11...Qe7 (11...a5 12.Nf5 ef5 13.Nc3) 12.Nc3 (12.Nf5 ef5 13.0-0) 12...Ne5 13.Nf5 ef5 14.0-0 Ng6 15.Rac1 (15.a4 Rad8=) 15...f4 16.b5 Rfe8 (worse 16...Qc5 17.Ne4 Qe7 18.Nf6 gf6 19.bc6 bc6 20.Rc6+-) 17.Qb4 (17.Rfd1!?=) 17...a6=+ 18.b6 Be5 19.Bf3 (better 19.Rc2!?=+) 19...Nh4–/+ 20.ef4 (20.Be2 a5 21.Qa4 Ne4 22.Ne4 Bb2–/+ (22...de4?! 23.Be5 Qe5 24.ef4 Qf4 25.Rc4=+)) 20...Nf3–+ 21.gf3 a5 22.Qa4 Bb8 23.Rfe1 Qe1 (23...Qc5 24.Ne4 Qf8 25.Nf6 gf6 26.Bf6=) 24.Re1 Re1 25.Kg2 (25.Kh2 Nh5 26.Nd5 cd5–/+) 25...Nh5–+ 26.Nd5 cd5 27.Be5 Be5 28.fe5 Re5 29.c6 bc6 30.Qc6 Rb8 31.Qd6 (31.b7 Re7 32.Qc8 Re8–+) 31...Ree8–+ 32.Qc7 d4 33.a4 (33.d3 Red8–+) 33...Red8 34.Qc6 Nf6 35.b7 Ne8 36.Qb5 Nd6 37.Qa5 Nb7 38.Qc7 (38.Qb4 Rd5–+) 38...Rdc8 39.Qd7 Nc5 40.Qd4 Ra8 41.f4 (41.Qg4 Ne6–+) 41...Ra4 42.Qc3 Raa8 (42...Rf4?! 43.d4 Rf2 44.Kg1–+) 43.Qd4 (43.Qc4 Nd7 44.Qb4 Nf6–+) 43...Ra3 44.Qb2 (44.h4 Rd3 45.Qb4 Nd7–+) 44...Rd3 45.Qc2 Rdd8 46.f5 Nd3 47.Qa4 Rc2! 48.Qa5 (48.Qc2 Ne1 Double attack (48...Ne1 Decoy)) 48...Nf4 49.Kh2 (49.Kg3 Rd3 50.Kg4 Rc8–+) 49...Rcd2 50.Qc7 R2d4 (50...Rf2 51.Kg3 Rfd2 52.Kf4–+) 0–1. Daatselaar,Jan Bart van (2175) – Vegjeleki,Adolf (2195), corr ICCF WSTT/3/06/Final, 2009.

6.a3 c6 7.h3 Bh5 A) 8.cd5 A1) 8...cd5 9.Nc3 (9.Nf3 Be7 10.Nc3 0-0 11.Be2 Rc8 12.Rc1 Bf3 13.gf3) 9...Rc8 10.Nf3 Be7 11.Be2 0-0 12.Rc1 Bf3 13.gf3; A2) 8...ed5 9.Be2 (9.Nf3 Bd6 10.Nc3 a5 11.g4 Bg6 12.Be2 0-0 13.Nh4) 9...a5 10.Nf3 Qb6 11.b5 Bd6 12.Bd4 c5 13.Bf6; B) 8.Be2 Be2 (8...dc4 9.Bc4 Nb6 10.Nc3 a5 11.Nf3 Nc4 12.Qc4 Bd6 13.Ne4) 9.Ne2 (9.Ke2 dc4 10.Qc4 Nb6 11.Qd4 a5 12.Nf3 ab4 13.ab4) 9...dc4 10.Qc4 a5 11.b5 Nb6 12.Bf6 Nc4 13.Bd8; C) 8.Nf3 C1) 8...Bd6 9.c5 (9.Nc3 0-0 10.c5 Bc7 11.Be2 Qe7 12.0-0 h6 13.Qc2) 9...Bc7 10.Nc3 0-0 11.Be2 Qe7 12.Qc2 Bf3 13.gf3; C2) 8...a5 9.Nc3 (9.g4 Bg6 10.Nc3 ab4 11.ab4 Ra1 12.Ba1 Bd6 13.c5) 9...ab4 10.ab4 Ra1 11.Ba1 Bf3 12.gf3 Be7 13.cd5; C3) 8...Be7 9.Nc3 (9.cd5 cd5 10.Nc3 0-0 11.Be2 Rc8 12.Rc1 Bf3 13.gf3) 9...0-0 10.cd5 cd5 11.Be2 Rc8 12.Rc1 Bf3 13.gf3.

6.Nc3 dc4 7.Bc4 Ne5 =+.

6.c5 a5 7.a3 =+.

6.c5 a5 7.d4 ab4 8.h3 Bf5 9.Nf3 b6 10.cb6 c5 11.dc5 Nc5 12.Qd1 Nfd7 13.Nd4 Bb1 14.Qb1 Qb6 15.Nf3 Na4 16.Bd4 Qa5 17.Qc1 Bc5 18.Bg7? (better is 18.Qd2 Bd4 19.Nd4–+) 18...Rg8 19.Bb2 b3 20.Nd2 Nb2 21.Qb2 Bb4 (21...ba2?! 22.Kd1–+) 22.Qd4 (22.Qb3 Bd2 23.Kd1–+) 22...Bc3 23.Qd3 Nc5 24.Qb5 Ke7 (25.Qa5 Ra5–+) 0–1. Pierred (2250) – Wahnfried2004 (2495), Rated game, 5m + 0s, 2005.

6.c5 c6 7.Be2 (7.h3 Bf5=+) 7...a5 (7...b6 8.Bg4 Ng4 9.cb6 Qb6=+) 8.d4 (8.Bg4 Ng4 9.a3 ab4 10.ab4 Ra1 11.Ba1 b6=+) 8...b6 (8...Be2 9.Ne2 ab4 10.a3 ba3 11.Ra3–/+) 9.a3 (9.Bg4 Ng4 10.b5 Rc8 11.cb6 Qb6 12.bc6 Qc6–/+) 9...a4 (9...ab4 10.ab4 Ra1 11.Ba1 Be2 12.Ne2=+) 10.Qc2 Bf5 11.Bd3 Bd3 12.Qd3 b5 13.Ne2 Be7 14.Nbc3 (14.0-0 Qc7=) 14...Qc7 (14...0-0 15.0-0=) 15.f4 (15.f3 0-0=) 15...h5 (15...0-0 16.0-0=) 16.0-0-0 (16.0-0 h4=) 16...Ng4 (16...0-0-0 17.Kb1=+) 17.Rdf1= f5 (17...0-0-0 18.h3 Ngf6 19.g3=) 18.h3 (18.Rf3 0-0-0=) 18...Ngf6 19.Nd1 (19.Rf3 Ne4=) 19...0-0-0 20.Nec3 (20.Ndc3 h4=) 20...Qb8 (20...Rhg8 21.h4=) 21.Nf2= Ne4 (21...h4 22.Rhg1=) 22.Nce4 de4 23.Ne4 fe4 24.Qe4 Qc7 25.Qe6 Bf6 26.e4 Rde8 27.Qf5 Rhf8 28.Qg6+= Bd8 29.e5 h4+= 30.f5 Nb8 31.Rf2 Qf7 32.Qf7+/– Rf7 33.Rhf1 Bg5 34.Kc2+/– Rd7 35.Rf3 Rd5 36.g3 Rh8 37.gh4 Rh4 38.Rg1 Bh6 39.Rg4 Rg4 40.hg4 Nd7 41.Rg3 Bg5 42.Rh3 Bh6? 43.Rh5 Be3 44.g5 Bd4+/– 45.Rh8 Kb7 46.e6 Bb2 47.Kb2 Ne5 48.e7 Rd2 49.Kc1 Rf2 50.e8Q Nd3 51.Kb1 (51...Rb2 52.Ka1 Ra2 53.Ka2 Nc1 54.Kb1 Nb3 55.Qd7 Ka6 56.Ra8#) 1–0. Werk,M – Mueller,J, Meister B TBB, 1997.

6.d3 c6 7.Nd2 Be7 8.h3 Bf5 9.Ngf3 0-0 10.Be2 a5 11.a3 h6 12.0-0 Bd6 (12...a4 13.Qc2=) 13.cd5 (13.c5 Bc7+=) 13...ed5= 14.Nd4 a4 15.Qd1 Bh7 16.N2f3 Re8 17.Rc1 Qb6 18.Qd2 Bb8 19.Qc3 Rc8 (19...Bd6 20.Rc2=) 20.Nh4 Qd8 21.f4 Bd6 22.g4 (22.Nhf5 Bf8+=) 22...Bf8 (22...c5 23.bc5 Rc5 24.Qd2=) 23.Ndf3 (better is 23.g5!? c5 24.bc5 Nc5 25.Qd2 hg5 26.fg5=) 23...c5 24.b5 Qb6 25.Ne5 (25.g5 hg5 26.fg5 Nh5=+) 25...Qb5–/+ 26.g5 (26.Nhf3 Bd6–/+) 26...hg5 27.fg5 Ne5 28.gf6 gf6 29.Kh1 (29.Rcd1 d4 30.ed4 cd4–+) 29...Bg7 (29...Bd3 30.Bd3 Qd3 31.Rf6 Qe4 32.Kh2–+) 30.Rg1? (30.Nf5!? Qd7 31.e4–/+) 30...Kf8 (30...Nd3 31.Qf6 Nf2 32.Qf2 Qb2 33.Nf5 Bf5 34.Qf5–/+) 31.Bg4? (better is 31.Rcd1–+) 31...Ng4 32.Rg4 0–1. Sternik,Ryszard – Andonov,A, corr ICCF GT–242, 1985.

6.d3 Be7 7.Be2 0-0 (7...dc4 8.dc4 Be2 9.Ne2=) 8.a3 (8.Bg4 Ng4 9.cd5 a5=+) 8...Be2 (8...dc4 9.Qc4 Nb6 10.Qc2=) 9.Ne2= c5 10.0-0 cb4 11.ab4 Qb6 12.b5 (12.Bf6 Nf6 13.Ra4 dc4 14.dc4 a5=+) 12...dc4 13.dc4 Nc5 14.Qc2 Rfd8 15.Nbc3 Qc7 16.Ng3 Nd3 17.Nce2 (17.Ra4!?=+) 17...Nb2–/+ 18.Qb2 Qc4 19.Nf4 (19.Rfd1 Bd6–/+) 19...Qb4 20.Qb4 Bb4 21.Ra4 (21.Rfd1 Rd1 22.Rd1 a5–/+) 21...Bc5 (21...Bd6 22.Rd1–/+) 22.Rc1–/+ Bb6 (22...Bd6 23.Rca1 Be5 24.R1a3–+) 23.Rac4 Ng4 (23...e5 24.Nfe2–/+) 24.Nf1 Ne5–/+ 25.R4c3 a5 26.ba6 ba6 27.Rb1 Rdb8 28.Rcb3–/+ Bc7 29.Nd2 a5 30.Ra1 Rb3 31.Nb3 Rb8 32.Nc5 Bd6 33.Na4 Nc4 34.g3 Kf8 35.Ne2 Rb4 36.Nec3 Be5 37.Ra2 Nd6 38.Kg2 Ke7 39.f4 Bf6 40.e4 Ne4 41.Ne4–/+ Re4 42.Nc5 Rc4 43.Ra5 Kd6 44.Nd3 Rc2 45.Kh1 Bd4 46.Ra6 Ke7 47.Ra4 Be3–+ 48.Re4 Bc5 49.f5 Kf6 50.fe6 fe6 51.Nf4 e5 52.Nh5 Kf5 53.Ra4 e4 54.Ng7 Ke5 55.Nh5 e3–+ 56.Nf4 Bd4 57.Ra8 Ke4 ½–½. Faas,Dominik – Enzmann,Steffen (2135), DLM Binz, 1995.

6.d4 dc4 7.Bc4 Nb6 8.Nc3 (8.f3 Bh5=) 8...Nc4 (8...Nfd5 9.a3=+) 9.Qc4 c6 (9...Nd5 10.a3 c6 11.e4=) 10.a3 (10.f3 Bh5 11.b5 Qb6=) 10...Bd6=+ 11.h3 (11.e4 Nd7=+) 11...Bh5 (11...Bf5 12.Nf3=+) 12.Nge2 (12.e4 Nd7=+) 12...0-0 (12...Bg6 13.0-0=+) 13.e4= Bc7 (13...Nd7 14.0-0=+) 14.f3 (14.0-0 Qd7=) 14...Qd7 (14...Nd7 15.0-0=) 15.a4 (15.b5 cb5 16.Qb5 Qd8=) 15...a5 (15...Rfd8 16.Rd1=) 16.b5 Rfc8 17.bc6 bc6 18.Ba3 e5 (18...Rab8 19.0-0=) 19.Rd1 ed4 20.Nd4 (20.Bc5 Rab8=) 20...Bg3 (20...Be5 21.0-0 Qa7 22.Bc5+=) 21.Kf1+= Rd8 22.Ke2 Qa7 23.Rhf1 Qc7 24.Nc6+/– Re8 25.Nd5 Nd5 26.Rd5 Bg6 27.Rfd1 Bh4 28.Ne5 Qb6+/– 29.Bc5 Qb2 30.R1d2 Qa1 31.Ng6 Qe1 32.Kd3 Qf1 33.Re2 hg6 34.Bd4 Rec8=+ 35.Qb3 Rab8 36.Rb5 Rb5 37.Qb5 Rd8 38.Qb6 Rd7–+ 39.Qc5 Kh7 40.Ke3 f6 41.Qc2 Qg1 (42.Rf2 Bf2 (< 42...Qf2 43.Qf2 Bf2 44.Kf2 Rd4 45.Ke3 Ra4 46.Kd3–+) 43.Qf2 Qf2 44.Kf2 Rd4–+) 0–1. Kusmierek,Jozef – Buss,Michael D, corr 3GMM½–01, 1998.

6.d4 dc4 7.Bc4 Nb6 8.Nc3 Nc4 9.Qc4 c6 10.a3 Bd6 11.h3 Bh5 12.Nge2 0-0 13.e4 Bc7 14.f3 Qd7 15.a4 a5 16.b5 Rfc8 17.bc6 bc6 18.Ba3 e5 19.Kf1 Rd8 (19...Rab8 20.Rd1 Qe8 21.de5 (21.Kf2 ed4 22.Nd4 Nd7 23.Nf5 Ne5 24.Qe2=) 21...Be5 22.Kf2 c5 23.Nd5 Nd7 24.Rd2=; 19...Qe8 A) 20.Kf2 ed4 (20...Rab8 21.Rhb1 Nd7 22.Rb8 Bb8 23.Rd1 Bg6 24.Kg1=) 21.Nd4 Nd7 22.Rab1 Ne5 23.Qe2 Rab8 24.Rhd1=; B) 20.Rd1 Rab8 21.de5 (21.Kf2 Nd7 22.Rhe1 ed4 23.Nd4 Ne5 24.Qa6=; 21.Kg1 Nd7 22.Kf2 ed4 23.Nd4 Ne5 24.Qc5=+; 21.Bc5 Nd7 22.Ba3 ed4 23.Nd4 Bg6 24.h4=+) 21...Be5 22.Kf2 c5 23.Nd5 Qe6 24.Rd2=) 20.Nd5?? (better 20.Rd1 Qe8 21.g4=+ Bg6 22.h4 ed4 23.Nd4 Bb6 24.Nc6=+) 20...Nd5 (better 20...cd5 21.ed5 Nd5–+) 21.Bc5?? (21.ed5 cd5 22.Qb5 Qe6–+) 21...Rab8 (better 21...Ne3 22.Kf2 Nc4–+) 22.Qb5?? (22.ed5 cd5 23.Qc3–+) 22…f6 (22...f6 23.Qc4 Qe6 24.ed5 cd5–+ (24...Rd5?! 25.Nc3–/+)) 0–1. Pommerel,Wim – Buss,Michael, corr 3GMM½–1, 1998.

6.d4 Bd6 7.Nc3 c6 8.f3 Bf5 9.c5 Bc7 10.b5 0-0 11.Nge2 Qb8 (11...e5 12.Qa4=+) 12.g4= Bg6 13.g5 Ne8 14.0-0-0 Qd8 (< 14...Bh2 15.f4+-) 15.h4 Bh5 16.Bg2 cb5 17.Nb5 Bb8 18.Nbc3 Qc8 19.e4 de4 20.Ne4 b6 21.N4g3 Bg3 22.Ng3 Bg6 23.h5 Bf5 24.Nf5 ef5 25.f4 bc5 26.Bb7 Qd8 (26...Qb8!? 27.Qf3 Nc7+/–) 27.dc5+- Rc8 (27...Rb8 28.Qb5 Qc7 29.Rd7 (29.Qd7?! Qc5 30.Kb1 Qb6=+) 29...Qf4 30.Kb1 Qg5 31.h6+-) 28.Qc2 (28.Qc3 Rc5 29.Qc5 Nc5 30.Rd8 Nb7+-) 28...Rc5 29.Qc5! Nc5 30.Rd8 Nb7 31.Rd7 Nc5 32.Ra7 Nd6 33.Ba3 Nde4 34.Bc5 Nc5 35.a4 (35.Rh3!? Ne6 36.Rf3 Rc8 37.Kd2 Rd8 38.Ke3 Kf8+-) 35...Nd3 36.Kd2 Nf4 37.Ke3 Ne6 38.a5 Re8 39.Rd1 g6 40.a6 (40.Rdd7 Ng5 41.Kf4 Nh3 42.Kg3 Re3 43.Kg2 Ng5+-) 40...Ng5+/– 41.Kf4 h6 42.Rdd7 Re4 43.Kg3 Kg7 44.hg6 Kg6 45.Re7 Ra4 46.Ra8 f4 47.Kf2 Kf6 48.Ree8 Kf5 49.Kf1 f3 50.Re3? Kf4–+ 51.Re1 Kg3 52.Kg1 Ra2 53.Rc1 Rh2 54.Rg8 f2 (55.Kf1 Rh1 56.Ke2 Rc1–+) 0–1. Pierred (2160) – Gamemaster1 (2450), Rated game, 5m + 0s, 2005.

6.d4 Bd6 7.c5 Be7 8.a4 (8.Bd3 0-0=+) 8...0-0 9.Nc3 Re8 (9...a5 10.ba5 Bf5 11.Qb7–+) 10.b5 (10.Bd3 a5=+) 10...c6 (10...Bf5 11.Nf3=+) 11.h3 Bf5 12.Nf3 Be4 (12...Qa5 13.bc6 bc6 14.Be2=+) 13.Be2 cb5 (13...Bf3 14.Bf3 e5 15.0-0=) 14.ab5= Qc8 (14...Bf3 15.Bf3 Qc7 16.0-0+=) 15.Na4 (15.Ne4 Ne4 16.0-0 Qc7+=) 15...Qc7= 16.Rc1 (16.0-0 Rec8=) 16...Qa5 (16...Bf3 17.Bf3 a6 18.b6+=) 17.Bc3 (17.Nc3 Rec8=) 17...Qc7= 18.0-0 Rac8 19.Ba1 b6 (19...Bf3 20.Bf3 Bd6 21.Nc3+=) 20.c6+= Nb8 21.Rc3 (21.Nc3 a6+=) 21...Bd6 22.Rfc1 e5 23.Qb2 h6 24.Ne1 Re7 25.Bd3 Bg6 26.Nc2 Bd3= 27.Rd3 Ne4 28.Nb4 Bb4 29.Qb4 ed4 30.Rd4 Re5 31.f3 Ng3 32.Qd2 Qe7 33.Re1 Qe6 34.Rg4 Rg5 35.Qd4 Rg4 36.hg4 Qf6?? 37.Qd5 Qh4 38.Qe5 Nh5? 39.Rd1 Nc6 40.bc6 Nf6 41.c7 Ne8 42.g3 Qf6 43.Qe8! Re8 44.Bf6 gf6 45.Rd8 Kf8 1–0. NN – ChessMaster2000, 1994.

6.cd5 ed5 7.Be2 Be6 8.Nf3 a5 9.b5 Bd6 =.

6.cd5 Nd5 7.f3 Bh5 8.a3 a5 9.e4 N5b6 =.

6.Nf3 Bf3 7.gf3 dc4 8.Bc4 Nb6 9.Be2 Qd5 10.Qc2 (10.Qd5 Nbd5 11.a3 a5=) 10...Bb4 11.Rg1 0-0-0 (11...Bf8 12.Qc7 Rc8 13.Qf4+=) 12.Nc3 (12.Rg7!? e5 13.f4+=) 12...Qd7 (12...Bc3 13.Bc3 Rhg8 14.Rc1+=) 13.Rg7+= Rhg8 14.Rg3 Rg6 (14...h5 15.a3 Bd6 16.f4=) 15.f4 a6 16.a3 Bc3 17.Bc3 (worse is 17.Qc3 Ne4 18.Qc2 Ng3 19.fg3 Rh6–+) 17...Nfd5 18.Bd4 (18.d4 Qc6 19.Rc1 Nc3 20.Qc3 Qc3 21.Rc3 Nd5=) 18...Kb8 (18...Nf4 19.Ba6 ba6 20.Bb6 Nd3 21.Ke2 Nf2 22.Bc7 Qc7 23.Rc1 Qc2 24.Rc2 Kb7 25.Kf2 Rg3 26.hg3=) 19.Bd3 (19.Rc1 Ka8+=) 19...Rh6= 20.f5 (20.Bh7!? Rh2 21.Be4=) 20...Rh2+= 21.fe6 Qe6 22.Be4 Nb4?? (better is 22...Rh4 23.f4 Nf4–/+) 23.ab4+– Rd4 24.Rg8 Nc8 25.Rc1 (25.Bf5 Rd2 A) 26.Be6?! Rc2 27.Rc8 Ka7=; B) 26.Kd2? Rf2 27.Kd1 Qd5 (27...Qf5?! 28.Qf5 Rf5 29.Ra5 Ra5 30.ba5=; 27...Rf5?! 28.Ke2–+) 28.Kc1 Rc2 (28...Qf5?! 29.Qf5 Rf5 30.Ra5 Rf1 31.Kd2=; 28...Rf5?! 29.Rg1–+) 29.Bc2 f5–+; C) 26.Qc5+–) 25...Rd7 (25...Qe7!? 26.Re8 Re4 27.Re7 Re7=) 26.Bf5+/– (26.Bh7? f6 27.Bf5 Qg8 28.Bd7 Qg1 29.Ke2 Qf2 30.Kd3 Qe2 31.Kc3 Nd6–+) 26...Rh1? (better is 26...Qd6 27.Bd7 Qd7+/–) 27.Ke2+– Rc1 28.Be6 Rc2 29.Bd7 Rb2 (29...Rc4 30.Rc8 Ka7 31.b5+–) 30.b5 (worse is 30.Bc8 Rb4 31.Bf5 Ka7 32.Bh7 a5+–) 30...ab5 31.Rc8 (31.Bc8?! c5+–) 31...Ka7 32.Rc7 b4 (32...Kb6 33.Rc1+–) 33.Bf5 h5 (33...f6 34.Rh7 Ra2 35.Be4+–) 34.Rf7 b3 35.Be4 1–0. Santasiere,Anthony – Stark,M, Ventnor City, 1944. (=1.Nf3 d5 2.b4 Nf6 3.e3 Bg4 4.Bb2 Nbd7 5.c4 e6 6.Qb3)

6.Nf3 Bf3 7.gf3 c6 8.Nc3 (8.Rg1 Rg8=+) 8...Qb6 (8...dc4 9.Bc4 Ne5 10.Be2=+) 9.a3 dc4 10.Bc4 Bd6 11.d4 0-0-0 (11...Qd8 12.Rg1 Rg8 13.f4=) 12.Ke2 (12.Ne4 Bc7+=) 12...Kb8 13.h4 (13.Rac1 Qc7=) 13...Rhe8 (13...Qc7 14.Rac1=) 14.Rhb1 (14.Ne4 Be7=) 14...e5 (14...a6 15.Ne4 Be7 16.Nf6 Nf6 17.b5 cb5 18.a4=+) 15.de5 (15.Na4 Qc7 16.b5 ed4 17.Bd4 Be5 18.bc6 Qc6+=) 15...Ne5 16.Bf7 Nf7 17.Qf7 Re7 (17...Qa6 18.b5 cb5 19.Ke1=+) 18.Qc4= Rde8 (18...a6 19.Ne4 Ne4 20.fe4=) 19.e4 (19.b5!?+=) 19...Be5= 20.Kf1 Bc3 (20...Rd8 21.Rd1=) 21.Bc3 Ne4? (better 21...Qc7=) 22.fe4+- Re4 23.Qd3 Qc7 (23...Ka8 24.Re1 Rf8 25.Qg3+-) 24.Qg3 (better 24.Re1 Qh2 25.Qg3 Qg3 26.fg3 R4e7+-) 24...Rf4? (24...Qg3 25.fg3 Re3 26.Bg7 Rg3 27.Bh6+-) 25.Be1 (better 25.Re1 Rfe4 26.Qc7 Kc7 27.Bg7+-) 25...Ref8 26.Kg1 (better 26.Rd1+-) 26...Qf7?? (better 26...h5 27.Kf1 Qe5+/-) 27.Bd2+- Ka8 28.Bf4 Qf4 29.Qf4 Rf4 30.Kg2 a5 (30...Rh4 31.Rh1 Rh1 32.Rh1+-) 31.Kf1 (31.Kg3 Rf7+-) 31...g5 (31...Rh4 32.Ke2 Re4 33.Kf3+-) 32.Ke2 (better 32.hg5!? Rf5+-) 32...Rh4 33.Kf1 (better 33.Rh1!? Re4 34.Kf3 Rf4 35.Ke3 ab4 36.ab4 Kb8+-) 33...Rf4 (33...h5 34.Ke2 Re4 35.Kd3+-) 34.Kg2 (34.ba5 Ka7+-) 34...g4 (34...h5 35.Rb3 Ka7 36.Re1 ab4 37.Rb4+-) 35.f3 (better 35.Rh1!? Rf7+-) 35...h5 36.Kg3 (36.fg4!? Rg4 37.Kh3 Kb8+-) 36...Rf3 37.Kh4 Rh3 38.Kg5 Ka7 39.Kf4 (39.ba5 c5+-) 39...a4? (better 39...Rf3!? 40.Ke4 Rf8+-) 40.Kg5 (40.Rh1 Rf3 41.Kg5 g3+-) 40...b5 (40...Rh2 41.Rh1 Rc2 42.Kh5+-) 41.Kf4 (41.Rh1 Kb6+-) 41...Kb6? (41...Rf3 42.Ke4 Rf8+-) 42.Kg5 Rf3?? (42...Ka7 43.Rh1 Rc3 44.Rh5 g3 45.Rh7 Kb6+-) 43.Rc1 (43.Kh5 g3+-) 43...g3 (43...Rh3 44.Rh1 c5 45.Rh3 gh3 46.Kf5+-) 44.Kh4 (44.Kh5 Rd3+-) 44...g2 45.Rg1 Rf2 46.Rg2?? (better 46.Kg3 Rc2 47.Rg2+-) 46...Rg2-+ 47.Kh5 Rg3 0-1. ClayPigeons (2065) - Marina_Manakov (2265), Rated Bullet game, lichess.org, 2020.

7.d3 0-0 8.Nd2 e5 9.Be2 Be6 10.a4 a5–/+ 11.Rc1 ab4 12.Qb4? (12.d4 ed4 13.ed4 Re8–/+) 12...b6 (better is 12...Nc5!? 13.Rc5 b6–+ (13...Bc5?! 14.Qc5 b6 15.Qc2=)) 13.d4–/+ bc5 (13...ed4 14.ed4 Re8 15.Ngf3–/+) 14.dc5 Rb8 15.Qc3 (15.Bb5 c6!–+) 15...Bc5–+ 16.Ngf3 Bb4 17.Qc2 Bf5 (17...e4 18.Nd4 c5 19.Nc6=) 18.Qf5–/+ Bd2 19.Nd2 Rb2 20.Rb1 g6 21.Qh3 Ra2 22.Bb5 c5 23.Rd1 Rb2 24.0-0 Qe7 25.Nf3 Rd8 26.Rb1 Rb1 27.Rb1 e4 28.Ng5 d4 29.Bc6 Rb8 30.Rb8 Nb8 31.Qc8 Qf8 32.Qf8 Kf8 33.Ne4 Nc6 34.Nf6 d3 35.Kf1 Ke7 36.Nh7 c4–/+ 37.Ke1 c3 38.h3?? c2–+ 39.Kd2 Na5 40.Nf6 (40.Ng5–+) 0–1. SuperForte – ChessMaster2000, 1994.

7.d3 e5 8.Nf3 Bf3 9.gf3 =+.

7.Be2 a5 8.Bf6 Bf6 9.d4 Be2 10.Ne2 ab4 11.Qb4 =+.

7.Be2 Be2 8.Ne2 0-0 (8...a5 9.a3=) 9.d4 (9.0-0 c6=) 9...c6 (9...a5 10.ba5 Ra5 11.0-0=+) 10.a4 (10.0-0 Qc7=+) 10...Qc7 11.b5 e5 (11...b6 12.cb6 Qb6 13.Ba3=+) 12.bc6 (12.0-0 Rfe8 13.Nbc3 ed4 14.ed4 b6 15.cb6 Nb6=+) 12...bc6 13.Nbc3 (13.0-0 Rab8 14.Qc2 Rfe8=+) 13...Rab8 14.Qc2 Ng4 (14...Rfe8 15.Rb1=+) 15.h3 Ngf6 (15...Nh6 16.0-0=+) 16.0-0 h6 (16...Rb7 17.Rab1=+) 17.Rab1= Rfe8 18.Rfd1 e4 (18...a5 19.Qf5=) 19.Rf1 (19.Ba3 Rb1 20.Rb1 Rb8=) 19...Rf8 (19...Rb7 20.Ba1=) 20.Nf4 (20.Ng3 a5=) 20...Rb7 21.Nce2? (21.Ba1 Rfb8=) 21...Rbb8?? (better is 21...g5–+) 22.Ng3= Bd8 23.Nf5 Rb7 24.Nd6 Rb8 25.Ba3 Rb1 26.Rb1 Qa5 27.Bb4 Qc7 28.Bd2 Nb6?? 29.cb6+- Qd6 30.ba7 Bc7 31.Bb4 c5 32.Bc5 Qc6 33.Rb5 Rc8?! 34.Qb3 Bf4 35.ef4 e3 36.fe3 Ra8 37.Rb6 Qd7 38.Rb8 Kh7 39.Ra8 Ne8 40.Rb8 Nc7 41.Rb7 Qd8 1–0. NN – SuperConstellation4, 1987.

7.h3 Bf5 =+.

8.h3 Bf5 =+.

9.Ngf3 e4 10.de4 de4 =.

10.Ngf3 d4 11.Nc4 b5 12.cb6 ab6 =+.

11.Rc1 ab4 12.Qb4? b6 13.d4–/+ bc5 14.dc5 Rb8 15.Bb5 c6! –+.

11.Rc1 ab4 12.Qb4? b6 13.d4–/+ bc5 14.dc5 Rb8 15.Qc3 Bc5–+ 16.Ngf3 Bb4 17.Qc2 e4 18.Nd4 c5 19.Nc6 =.

11.Rc1 ab4 12.Qb4? b6 13.d4–/+ bc5 14.dc5 Rb8 15.Qc3 Bc5–+ 16.Ngf3 Bb4 17.Qc2 Bf5 18.Qf5–/+ Bd2 19.Nd2 Rb2 20.Rc2 Rb4 –/+.

11.Rc1 ab4 12.Qb4? b6 13.d4–/+ ed4 14.ed4 Re8 15.Ngf3 –/+.

11.Rc1 ab4 12.Qb4? Nc5!? 13.Rc5 b6 –+ (13...Bc5?! 14.Qc5 b6 15.Qc2 =).

11.Rc1 ab4 12.d4 ed4 13.ed4 Re8 –/+.

7.a3 Be7 8.Nc3 (8.cd5 Nd5 9.Be2 ab4 10.Bg7 Rg8=+) 8...c6 (8...dc4 9.Qc4 0-0 10.b5=+) 9.cd5 cd5 (< 9...Nd5 10.Nd5 ed5 11.Bg7+=) 10.ba5 0-0 11.Nb5 (11.d4 Qa5 12.Nd2 Bf5=+) 11...Ne4 (11...Nc5 12.Qd1=+) 12.h3 (12.Nc3 Nec5 13.Qc2 Qa5=+) 12...Bh5 (12...Ndc5 13.Qd1 Bh5 14.g4=+) 13.Nc3 (13.Nbd4 Bh4 14.Nh4 Qh4=) 13...Ndc5 (13...Nec5 14.Qc2=+) 14.Qa2 (14.Qb6 Ra5 15.Qd8 Rd8=+) 14...Bh4 (14...Qa5 15.Ne4 Ne4 16.g4–/+) 15.Ne4 Ne4 (< 15...de4 16.Nh4 Qh4 17.Bd4 Nd3 18.Bd3 ed3 19.Qb2+=) 16.Nh4 Qh4 17.g3 Qd8 18.Bg2 (18.Bd4 Ng5 19.Bb6 Nf3 20.Kd1 Qf6=+) 18...Qa5=+ 19.Be4 (19.Bd4 b5=+) 19...de4= 20.g4 Bg6 21.Qb3 Rfc8 22.Bc3= Qa6 23.Rb1 Rc7=+ 24.Qb5 Qb5 (< 24...Qa3 25.Qe5 Rc3 26.dc3+=) ½–½. Campora,Daniel H (2545) – Vera,Reynaldo (2460), I Open Calvia, 2004.

7.a3 Bf3 8.gf3 dc4 9.Bc4 =+.

7.ba5 Nc5 8.Qb5 c6 9.Qb6 =+.

7.ba5 Bf3 8.gf3 Nc5 9.Qb5 c6 =+.

7.cd5 ab4 8.de6 Be6 9.Qd1 –/+.

7.cd5 ab4 8.de6 Be6 9.Qd3 –/+.

7.Na3 Bd6 8.cd5 cd5 9.Nb5 Bb8 10.h3 Bf3 11.gf3 0-0 12.h4 e5 (12...a6 13.Nd4+=) 13.Nc3 Nb6 14.a4 d4 15.Ne4 Nbd5 16.ed4 ed4 17.Bd4 Re8 18.d3 (18.Be3 Ne4 19.fe4 Re4=) 18...Be5 19.Be5 Re5 20.Qb2 Qe7 21.Rb1 (21.Be2!?–/+) 21...Ne4–+ 22.fe4 Re4! 23.de4 Qe4 24.Kd2 Qh1 25.Qd4 Nf6 26.Bd3 Qc6 27.b5 Qc7 28.Rg1 (28.Rc1!? Qe7 29.Qc5–/+) 28...Kh8–+ 29.h5 (29.Rc1 Qa5 30.Ke2 Re8 31.Kf1 Rd8–+) 29...Rd8 30.Qa7?? (30.Qh4 Qe5 31.Rd1–+) 30...Qc4 (worse is 30...Nh5 31.Rc1 Qd6 32.Rc3–+) 31.Qe3 (31.Rg3 Ne4 32.Ke1 Qc3 33.Kf1 Ng3 34.Kg2 Qd3 35.Qb7 Ne2–+) 31...Qa2 32.Kc1 Rc8 (32...Rc8 33.Kd1 Qa1 34.Kd2 Qg1–+) 0–1. Palmi,H (2130) – Zivkovic,Vj (2410), Open, Pula CRO, 2009. (=1.Nf3 Nf6 2.b4 d5 3.e3 Bg4 4.Bb2 Nbd7 5.c4 c6 6.Qb3 e6)

7.Nc3 Be7 8.cd5 cd5 9.h3 Bh5 (9...Bf3 10.gf3 Rc8 (10...0-0 11.Rg1 Rc8 12.Be2 Nb6 13.d3 Qd6 14.Nb5 Qh2 15.Rg5+=) 11.Rg1+= 0-0 12.Be2 Nb6 13.d3 Qd6 14.Nb5 Qh2 15.Rg5+=) 10.Be2= (10.g4 Bg6 11.Rc1 Rc8 12.d3 0-0 13.a3 Qb6 14.Be2 Rc7 15.Nh4+=; 10.a3 Bf3 11.gf3 0-0 12.Rg1 Rc8 13.Be2 Nb6 14.d3 Qd7 15.f4+=; 10.Rc1 Bf3 11.gf3 0-0 12.d4 Rc8 13.Bd3 Nb6 14.Nb5 Rc1 15.Bc1+=) 10...0-0 11.g4 (11.Rc1 Bf3 12.Bf3 Ne5+= 13.Be2 Rc8 14.a3 Nc4 15.Ba1+=) 11...Bg6+= 12.Nh4 (12.d3 a5 (12...Qb6+= 13.g5 Ne8 14.a3 a5 15.Na4+=) 13.g5 Nh5 14.ba5 Nc5 15.Qd1+=) 12...Qb6 (12...Be4 A) 13.f3 Ng4= (13...d4 14.Ne4 Ne4 15.fe4+=) 14.Ng2 Bh4 15.Kf1+=; B) 13.Rg1 Ne8 14.Ng2 Qb6 15.f3+=) 13.Ng6= hg6 14.a3 Nc5 (14...a5 15.Na4= (15.b5=); 14...Rfc8 15.Na4=) 15.Qd1 (better is 15.Qc2 Nce4 16.Ne4 Ne4 17.Rc1+=) 15...Nfe4? (better is 15...Ncd7!?+=) 16.Qc2+/– (worse is 16.bc5 Qb2 17.Ra2 Nc3 18.Rb2 Nd1 19.Kd1 Bc5+=) 16...Nd7 17.Ne4 de4 18.Qe4 Bf6 (18...a5 19.b5+/–) 19.d4+- Bh4 (19...Be7 20.Rd1+-) 20.0-0 (20.Bf3 Rfb8+-) 20...Nf6 21.Qf3 (21.Qe5 Rac8 22.Rfc1 Nd5+-) 21...Nd5 (21...Rac8 22.Rac1+-) 22.e4 Ne7 23.Rac1 Rad8 (23...Bf6 24.e5 Bg5 25.Rc5+-) 24.Rc5 (24.Qf4 Bf6 25.Qc7 Qc7 26.Rc7 Rc8+-) 24...a6 (24...Qd6 25.Rfc1+-) 25.Rd1 (25.Qf4 Bf6 26.e5 Nd5 27.Rd5 ed5 28.ef6 Rfe8+-) 25...f5 26.gf5 gf5 27.Qh5 g5?? (27...Bf6 28.e5 g6 29.ef6 gh5 30.fe7 Rfe8 31.ed8R Qd8+-) 28.d5 fe4 29.Qh8 Kf7 30.Bh5 (30.Bh5 Ng6 31.Qg7 Ke8 32.Bg6 Rf7 33.Qf7#; 30.Qh7 Ke8 31.Bh5 Ng6 32.Bg6 Rf7 33.Qf7#) 1–0. Karasev,Vladimir (2410) – Bachmann,Karlheinz (2275), SenWM, Bad Zwischenahn GER, 2008.

7.Nc3 Be7 8.h3 Bf3 9.gf3 Ne5 (9...dc4 10.Bc4 Ne5 11.Be2=+) 10.cd5=+ ed5 (< 10...Nf3 11.Ke2 Nh4 12.de6+=) 11.Be2 Qd6 12.d4 Ng6 (12...Ned7 13.b5=) 13.b5 Nh4 (13...0-0 14.h4=) 14.a4 (14.bc6 bc6 15.Qc2 0-0=) 14...0-0 (14...Qe6 15.a5=) 15.a5 (15.Ba3 Qe6=) 15...cb5 (15...Qe6 16.Rb1=+) 16.Nb5 (16.Qb5 Rfc8=) 16...Qd7 17.a6 (better is 17.Rc1!? Qd8 18.Ra1=) 17...ba6–/+ 18.Nc3 Qf5 19.Qd1 Rab8 20.Ba3 Ba3 21.Ra3 Rb2 22.Ra6 Rfb8 (22...Rc8 23.Ra2 Ra2 24.Na2–/+) 23.Ra7–/+ h6 24.Ra1 Qg6 25.Bf1? (better is 25.Qc1–/+) 25…Qc2 (26.Qc2 Rc2–+; 25...Re8 26.Qd3 Nf3 27.Kd1 Qd3 28.Bd3 Rd2 29.Kc1 Rd3 30.Na4–+) 0–1. Afifi,Assem (2345) – Surjadnji,Aleksei (2420), Cairo Golden Cleopatra, 1998.

7.Nc3 Bf3 8.gf3 g6 9.c5 Bg7 10.a4 a6 11.a5 e5 12.h4 Qe7 13.0-0-0 0-0 14.Na4 e4 15.f4 Nh5 16.Be2 Bb2 17.Qb2 Ng7 18.h5 Qf6 (18...Nh5? 19.Rh5 Nf6 20.Rh6+-) 19.Rdg1 Qb2 20.Kb2 Nf6 21.Kc3 Nfh5 22.Bh5 Nh5? (better is 22...gh5 23.Nb6 Rad8+=) 23.Rh5+- f5 24.Nb6 Rf7?? (24...Rad8 25.d4+-) 25.Rh2 (better is 25.Na8 Kg7 26.Nb6+-) 25...Re8 26.f3! Kg7 (26...ef3 27.Rf1 Decoy) 27.Na4 h6 28.Nb2 Rh8 29.Nd1 Kf6 30.Nf2 g5?? (30...ef3 31.Rg3 h5+-) 31.fg5 hg5 (31...Ke7+-) 32.Rh8 1–0. orangutanb4 (1935) – radecek9 (1725), kurnik, 2011.

7.d3 Bd6 8.Nbd2+= 0-0 9.Be2 Rc8 (9...a5 10.a3+=) 10.e4 (10.h3!? Bh5 11.0-0=) 10...Qc7 11.c5 Bf4 12.g3 Bd2 (12...Bh6 13.Rd1+=) 13.Nd2 Be2 14.Ke2 e5 (14...b6 15.cb6 Qb6 16.Kf3+=) 15.f3 (15.Kf3 b6 16.cb6 Qb6=) 15...Rfe8 (15...a5 16.a3+=) 16.Rac1 (16.Rhc1 b6+=) 16...Nf8 (16...a5!?–/+) 17.Kf2= Rcd8 (17...a5 18.ed5 cd5 19.a3=) 18.Qc3 (18.Rhe1 b5=) 18...Qd7+= 19.Nb3 Qh3 20.Qe1 Ng6 (20...Rd7 21.Qf1 Qe6 22.Qe2+=) 21.Qf1 Qe6 22.Kg2 Rd7 23.Rc2 (23.Rg1 Nh5+=) 23...Nh5 24.Rg1 f5 25.Kh1 Nf6 26.ef5 Qf5 27.f4 (27.Nd2!?–/+) 27...Ng4 (27...ef4?! 28.Nd4 Qh5 29.gf4=) 28.Rd2 (28.Re2 Rde7 29.fe5 Qd3–+) 28...d4 (28...Rf7 29.Qe2–+) 29.Qf3 (29.fe5!? Qe5 30.Qg2–/+) 29...Ne3–+ 30.b5 (better is 30.Qe4 Qe4 31.de4–+) 30...Qe6?? (better is 30...cb5!? 31.c6 bc6 32.Qc6 b4–+ (worse is 32...ef4 33.Nd4 Qd5 34.Qd5 Rd5 35.Re2–/+)) 31.Rf2 (31.bc6 bc6 32.Re1–/+) 31...Rf8 (worse is 31...cb5 32.f5 Qf6 33.fg6 Qg6 34.h3+/–) 32.bc6 bc6 33.Qe4 Ng4 (33...Rf6 34.Rf3–/+) 34.Re2+= Qd5 (34...Rd5!?+=) 35.Qd5= Rd5 (35...cd5? 36.h3 Nh6 37.fe5+-) 36.h3 Nf6 37.f5 Ne7 38.g4 Rfd8 (better is 38...Nd7!?=) 39.Rge1+/– Nd7 40.Kh2 (better is 40.Nd4 ed4 41.Re7 Nc5 42.Ra7+/–) 40...Nc5?? (better is 40...Rb8+=) 41.Nc5+- Rc5 42.Ba3 Nd5 (42...Rdd5+-) 43.Bc5 Nf4 (43...Ne3+-) 44.Re5 (44.Re5 g6 45.Re8 Re8 46.Re8 Kg7 47.Bd4 Kf7 48.Ra8 gf5 49.gf5+-) 1–0. Chandler,Patrick (2265) – Guenther,Peter (2225), Oberliga Ost–B, 2010. (=1.Nf3 Nf6 2.b4 c6 3.e3 d5 4.c4 Bg4 5.Bb2 e6 6.Qb3 Nbd7)

7.d3 Bf3 8.gf3 Bd6 (8...a5 9.a3=+) 9.Nc3 Qc7 (9...0-0 10.c5 Be7 11.Rg1=+) 10.Rc1 (10.f4 dc4 11.dc4 a5=) 10...0-0 (10...dc4 11.dc4 a5 12.c5=+) 11.h4 (11.cd5 Nd5 (< 11...cd5 12.Nd5 Qd8 13.Nf6 Nf6 14.Bg2+=) 12.a3 a5=) 11...Rac8 (11...dc4 12.dc4 a5 13.c5=+) 12.h5 (12.cd5 Nd5 13.a3=+) 12...c5 (12...h6 13.cd5 Nd5 14.a3=+) 13.Nb5 (13.cd5 ed5 14.Nd5 Nd5 15.Qd5 Rfd8+=) 13...Qb6= 14.Nd6 Qd6 15.bc5 Qc6 (better is 15...Nc5!? 16.Qa3 dc4 17.Rc4 b5=) 16.h6 Nc5 (16...g6 17.cd5 Nd5 18.d4+/–) 17.Qc2 (17.Qa3 Ncd7+/–) 17...Ncd7 18.hg7 Rfd8 (18...Kg7 19.Qd2 Kh8 20.Rh6+/–) 19.Be2 Rc7 20.Kd2 Rdc8 21.Rcg1+/– b5 22.Rh6 bc4? 23.Bf6+- cd3 24.Qd3 Qc2+= 25.Qc2 Rc2 26.Ke1 Rc1? 27.Bd1+- Nc5? 28.Bd4 Nd3 29.Ke2 Nb4 30.Rgh1 Na2 31.Rh7 Nc3 32.Kd3 (32...f6 33.Bc2 Rh1 34.Rh1 Kg7 35.Bc3+-) 1–0. Manninen – Rutledge, corr 3GMM–20, 1996.

7.d4 dc4 8.Bc4 a5 (8...Nb6 9.Be2=) 9.ba5= Qa5 (worse is 9...Ra5 10.Qb7 Ra8 11.Bc3+=) 10.Bc3 (10.Nc3 Bd6=) 10...Qb6 (10...Qc7 11.a4+=) 11.Nbd2 (11.0-0 Nd5+=) 11...Ra3 12.Qb6 Nb6 13.Bb3 (13.Bb2 Nc4 14.Nc4 Ra6+=) 13...Bf5 (13...Na4 14.Ba4 Ra4 15.e4–/+) 14.Rc1 (14.0-0 Be7+=) 14...Be7 (14...Ra8 15.Ba1–/+) 15.Ne5 (15.Ke2+=) 15...0-0 (15...Ra8!?+=) 16.f3= h6 (16...Nbd5 17.Bb2 Ne3 18.g4 Rb3 19.ab3+/–) 17.e4+= Bh7 18.0-0 (18.Ndc4 Nc4 19.Nc4 Ra6+=) 18...Rd8 (18...Nfd7 19.Ndc4 Nc4 20.Nd7= (20.Bc4? Ne5 21.de5 b5–+)) 19.Ndc4+= Nc4 20.Nc4 Ra6 (20...Raa8 21.Rfd1+=) 21.Rfd1 (21.a4 g6+=) 21...Ne8 (21...Nd7 22.Be1+=) 22.Ne3 (22.g3 Nf6+=) 22...Ba3 (22...Nd6 23.Bb4=) 23.Rb1+= Nd6 24.Nc2 (24.Be1 Raa8=) 24...Nb5 25.Be1 Raa8 (25...Bg6 26.Bc4=) 26.g4 Be7 27.a4 Na3 28.Na3+= Ba3 29.a5 c5? 30.d5+- ed5?? 31.Bd5 c4 32.Rb7 Bg6 33.Bc3 Bc5 34.Kg2 Kh8 35.Rb5 Be3 36.h4 f6 37.Ba8 Rd1 38.h5 Bf7?? 39.Rb8+- Kh7 40.Rb7 Kg8 41.Rb8 Kh7 42.Rf8 Be6 43.Bc6 Bc5 44.Ra8 Bf7? 45.e5 g6 46.e6! (46.e6 Kg7 47.ef7 gh5 48.f8Q Bf8 49.a6+-) 1–0. Lukovski,Lev (2095) – Zschorsch,Peter, Wch Seniors Gladenbach, 1999.

7.d4 Bd6 8.Nbd2 Qe7 9.b5 c5 10.Ne5 Be5 (10...cd4 11.Ng4 Ng4 12.Bd4=+ (12.cd5? de3 13.fe3 Qh4 14.g3 Bg3 15.Ke2 Be5–+)) 11.de5 Ne4 12.Ne4 de4 13.Qc2 Bf5 14.Rd1 Rd8 (14...0-0 15.Be2=) 15.a4 (15.Be2 0-0+=) 15...b6 (15...Qg5 16.Rd6=) 16.a5 (16.Be2 0-0+=) 16...0-0= 17.Bc3 (17.Be2 ba5 18.Ra1 Nb6=) 17...f6 (17...ba5!? 18.Ba5 Nb6=) 18.ef6+= Nf6 19.Rd8 Qd8 20.Be2 Re8 (20...Qe8 21.0-0+=) 21.0-0+/– e5 22.Rd1 Qc7 23.Qd2 Rd8?? (better is 23...Qf7+/–) 24.Qd8+- Qd8 25.Rd8 Kf7 26.a6 Ke7 (26...Ke6 27.Ra8 Ng4 28.Ra7 Nf2 29.Rb7+-) 27.Ra8 Nd7 (27...Kd6 28.Ra7 Ne8+-) 28.Ra7 Kd6 29.Rd7! Kd7 (29...Bd7 30.a7) 30.a7 Kd6 31.a8Q Bd7 32.Qf8 Ke6 33.Bg4# 1–0. orane (2010) – PatzerPunisher, Live Game Caissa's Web, 2004.

7.d4 Be7 8.Nc3 +=.

7.d4 Bf3 8.gf3 dc4 9.Bc4 =+.

7.cd5 ed5 8.Nd4 Qb6 9.h3 Be6 10.Bc3 Ne4 11.a3 a5 12.ba5 Qb3 13.Nb3 Ndc5 14.Nc5 Nc5 15.d4 Nb3 Attacks the isolani on a5 16.Ra2 Na5 17.a4 Kd7 18.Bd3 Nc4 19.a5 b5 20.Nd2 b4 21.Ba1 Bd6 (worse is 21...Na5 22.Nb3 c5 23.dc5 (worse is 23.Na5 c4–/+) 23...Nb3 24.Ra8 Na1 25.Ra7 Kc6 26.Ra1 Bc5 27.Ke2+=) 22.Nb3 g6 23.Bb2 Kc7 24.Ke2 Ra6 25.Rb1 Rha8 26.Bc1 f5 27.Bd2 R6a7 28.Ra4 Nd2 29.Kd2 Bd7 30.Ra2 f4 31.Rbb2 fe3 32.Ke3 Re8 33.Kd2 Rf8 34.f3 Raa8 35.Ke2 Be7 36.Rb1 Bf6 37.a6 ½–½. Wantoch_Rekowski,Jacek (2305) – Walczak,Andrzej (2365), 3. Email Team Championship Poland, 2006.

7.cd5 ed5 8.Be2 (8.Nd4 A) 8...Qb6 9.f3 (9.h3 Be6 10.a3 a5 11.ba5 Qb3 12.Nb3; 9.a3 Be7 10.f3 Be6 11.f4 Bg4 12.h3) 9...Bh5 10.a3 Bg6 11.f4 a5 12.f5; B) 8...Bd6 9.f3 (9.h3 Be6 10.Be2 0-0 11.0-0 a5 12.ba5) 9...Be6 10.Be2 0-0 11.0-0 a5 12.b5+= (12.ba5)) 8...Bd6 (8...Qb6 A) 9.a3 a5 10.b5 (10.Qa4 Nc5 11.Qc2 ab4 12.ab4) 10...Bf3 11.gf3 Bd6 12.Nc3; B) 9.Bc3 Bd6 10.0-0 0-0 11.d3 Bf3 (11...Be6 12.Nbd2) 12.Bf3) 9.h3 (9.0-0 0-0 10.Rc1 Qe7 (10...Qb6 11.b5 Bf3 12.Bf3) 11.a3 (11.b5 Nc5 12.Qc2) 11...Rfe8 (11...a5 12.b5) 12.Qc2+= (12.Nc3); 9.a3 Qc7 (9...0-0 10.0-0 Qe7 11.Rc1 Rfe8 12.Bd4) 10.Nc3 0-0 11.Rc1 a6 12.h3; 9.Nc3 0-0 10.0-0 Re8 11.b5 Ne4 12.Qc2; 9.Bc3 0-0 10.d3 Bf3 11.Bf3 Qc7 12.Nd2) 9...Be6 (9...Bf3 10.Bf3 Qb6 (10...Qe7 11.b5 0-0 12.d4) 11.Bc3+= 0-0 12.d3+= (12.0-0)) 10.Nd4 (10.0-0 Qe7 (10...0-0 11.Rc1 Qb6 12.b5) 11.Bd4 (11.a3 0-0 12.Qc2) 11...0-0 12.a3) 10...Qe7 (10...0-0 11.0-0 a5 12.ba5) 11.b5 (11.a3 a5 12.Ne6) 11...c5 12.Ne6 fe6 13.d3 0-0 14.0-0 Kh8 15.Nc3 Nb6 (15...Bc7 16.f4=) 16.Na4 (16.Rac1 Qf7=) 16...e5 (16...Na4 17.Qa4 a6 18.b6=) 17.Nb6= ab6 18.Bf3 e4 (18...Qf7 19.e4=) 19.de4+= de4 20.Be2 Rae8 21.Rad1 Bb8 22.Rd2 Qc7 23.g3 Qc8 24.Kg2 (24.Bf6 Rf6 25.Bg4 Qc7+=) 24...Qf5 25.Qd1 Be5 26.Be5 Qe5 27.Bc4 h5 28.Rd6+/– h4 29.gh4 g5 30.Rb6 Rd8 31.Qa1+- Qf5 32.hg5 Qg5 33.Kh2 Qh4 34.Qe5 Rd7? 35.Rg1 Qf2 36.Rg2 Qh4 37.Rf6! (37.Rf6 Qf6 38.Rg8 Kh7 39.Qh5 Qh6 40.Qh6 Kh6 41.Rf8+-; 37.Qc5 Ng4 38.Rg4 Rf2 39.Rg2 Rg2 40.Kg2 Rd2 41.Kg1 Qg3 42.Kh1 Qg2#) 1–0. Lombardy – Quinteros, 1974. (=1.Nf3 Nf6 2.b4 c6 3.c4 d5 4.e3 Bg4 5.Bb2 e6 6.Qb3 Nbd7)

7.cd5 Nd5 8.b5 Nb4 9.d4 Bf5 10.Na3 Nd5 11.Be2 Bb4 12.Kf1 0-0 13.Nc2 (13.bc6!? bc6 14.Rc1–/+) 13...Be7–/+ 14.Rc1 cb5 15.Bb5 N7f6 16.h3 (16.Na3 Ne4–/+) 16...Rc8–+ 17.g4 Be4 18.Be2?? (better is 18.Kg2–+) 18...Rc6 19.Na3 Rb6 20.Nb5 a6 (20...a6 21.a4 ab5 22.ab5 Ne8–+) 0–1. cristero (2525) – pierred (2740), net–chess.com, 2013.

7.Be2 dc4 8.Bc4 Bf3 9.gf3 =+.

7.Be2 Be7 8.0-0 0-0 9.h3 Bh5 10.d3 a5 11.a3 ab4 12.ab4 Qb6 13.Ra8 Ra8 14.b5 Nc5 15.Bd4 e5 16.Bc5 Qc5 17.bc6 bc6 18.cd5 Bf3 19.Bf3 cd5 20.Qb7 Rd8 21.d4 ½–½. Mittelbachert,Ulrich (1905) – Veksler,Aleksander L (1945), Ruhrgebiet VL2, 2004. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.c4 Ngf6 5.Qb3 e6 6.e3 c6)

7.Be2 Be7 8.h3 Bf3 9.gf3 a5 10.cd5 ed5 11.a3 ab4 12.ab4 Ra1 13.Ba1 0-0 14.Na3 Qb6 15.Nc2 Ra8 16.0-0 c5 17.Bc3 Qe6 18.bc5 Nc5 19.Qb1 Qh3 20.Be5 Qh5 21.Bg3 Nfe4 22.fe4 Qe2 23.ed5 Qg4 24.Qd1 Qg6 25.Ne1 Ne4 26.Kh2 Rd8 27.Ng2 Rd5 (27...Ng3?! 28.fg3 Rd5 29.Nf4 Qh6 30.Kg2–/+) 28.Nf4 Qh6 29.Kg2 Rd2 30.Qg4 Ng3 31.Kg3 Qg5 32.f3 (32.Qg5 Bg5 33.Rb1 Bf4 34.Kf4 Rd7–+) 32...g6 (better is 32...Qe5 33.Rf2 Rd1 34.Kh2–+) 33.e4? (33.Qg5 Bg5 34.e4 Bf4 35.Kf4 Rd7–+) 33...Qg4 (better is 33...Qe5 34.Rf2 h5 35.Qc8 Rd8–+) 34.fg4 Bd6 35.Kf3 Bf4 36.Kf4 h6 37.Rb1 Rd7 38.g5 hg5 39.Kg5 Kg7 40.Rb4 Re7 41.Kf4 Kf8 42.Rb5 f6 43.Rb4 Kf7 44.Kf3 Ke6 45.Kf4 g5 46.Ke3 Rc7 47.Rb6 Kf7 48.Kf3 Re7 49.Rb4 Kg6 50.Rb1 Rc7 51.Rb3 Rh7 52.Rb6 Rf7 53.Kg4 Re7 54.Kf3 Rc7 55.Rb3 Rd7 56.Ke3 Rh7 57.Rb6 Rh3 (better is 57...Rc7!?–+) 58.Kf2–/+ g4 59.Rb7 Rf3 60.Kg2 Kg5 61.Rg7 Kf4 62.Rg6 Ke5 63.Rg4 Rf4 64.Rg8 Re4 65.Kf3 Rd4 66.Re8 Kf5 ½–½. Sukhimski,Vladimir (2125) – Seifert,Henryk (2235), Pszczyna op, 2009. (=1.c4 c6 2.Nf3 d5 3.e3 Nf6 4.b4 Bg4 5.Bb2 e6 6.Qb3 Nbd7)

7.Ne5 Ne5 8.Be5 dc4 9.Bc4 Nd5 =.

7.Ne5 Ne5 8.Be5 Nd7 =+.

7.h3 Bf3 8.gf3 Be7 9.Rg1 g6 10.c5 e5 11.Nc3 Nh5 12.Ne2 Bf6 13.e4 Nf8 14.Ng3 Nf4 15.Ne2 Ne2 16.Be2 Ne6 17.h4 h5 18.ed5 cd5 (worse is 18...Qd5 19.Bc4 Qd7 20.Be6 Qe6 21.Qe6 fe6 22.Rg6=) 19.Bb5 Kf8 20.Bd3 e4 (better is 20...Kg7–/+) 21.fe4+= de4 22.Bc4?? (22.Be4 Nf4+/–) 22...Kg7 (22...Nd4 23.Bd4 Bd4 24.0-0-0 Bf2 25.Rg2 Qh4 26.Bf7+/–) 23.0-0-0 (23.Be6!? fe6 24.Qe6+/–) 23...Re8 24.Rge1 (24.d3 Bb2 25.Qb2 Kh7 26.de4 Qh4+=) 24...a5 25.Re4 (better is 25.Bb5 Rh8 26.Re4 ab4 27.d4=) 25...Nc5!–/+ 26.bc5 Re4 27.d3 Re2 28.Rd2 Rd2 29.Kd2 Bb2 30.Qb2 Qf6 31.Qb7? Qf2–+ 32.Kc3 Re8 33.c6 Re2 34.Qd7 Qf6 35.Qd4 Rc2!! 36.Kc2 Qd4 37.a4 Qc5 38.Kb3 Qc6 39.Bb5 Qe6 40.Bc4 Qf6 41.Bd5 Qh4 42.Be4 f5 43.Kc3 fe4 44.de4 Qe4 45.Kb3 Qb4 46.Kc2 h4 47.Kd3 h3 48.Ke3 h2 49.Kf2 h1Q 50.Kg3 Qc1 51.Kf3 Qcc3 52.Ke2 Qbb2 (52...Qbb2 53.Kf1 Qcc1; 52...Qe4 53.Kf2 Qce1) 0–1. orangutanb4 (1880) – kapibara8 (1880), kurnik, 2011.

8.a3 ab4 9.ab4 Ra1 10.Ba1 dc4 11.Bc4 Bf3 (11...Nb6 12.Be2=+) 12.gf3 Nb6 13.Be2 (13.e4 Nc4 14.Qc4 Nh5=+) 13...Qa8 (13...Nbd5!?–/+) 14.Bc3 Qa4 (14...Nbd5 15.Bd2=) 15.Qa4 Na4 16.Bd2 Nd5 (16...Bd6 17.b5=) ½–½. Rubinetti,Jorge Alberto (2410) – Garcia,Raimundo (2455), Buenos Aires, 1973.

8.a3 Be7 9.Nbd2 ab4 10.ab4 Ra1 11.Ba1 0-0 12.Bb2 dc4 13.Bc4 Bf3 (13...Nb6 14.Be2=+) 14.Nf3 Nb6 15.0-0 Nc4 16.Qc4 Qd5 17.Rc1 Qc4 (17...Ra8 18.b5 Ra2 19.Qd5 Nd5 20.Ba1 cb5 21.Kf1–/+) 18.Rc4 Nd5 (18...Ra8 19.b5 Ra2 20.Bc1 cb5 21.Rc8 Bf8 22.Bd2=+) 19.b5 cb5 20.Rc2 Ra8 21.e4 Nb6 22.g4 b4 (22...Ra2 23.Ne1–/+) 23.Kg2=+ h5 (23...Na4 24.Nd2=+) 24.gh5 Ra2 (24...Bd6 25.e5 Bf8 26.Nd2=+) 25.Rc7= Bd6 (25...Bf8 26.Rb7 Nc4 27.Bc1=) 26.Rb7 Rb2 (26...Nc4 27.Bc1+=) 27.Rb6+= Bc7 28.Rb7+/– Bf4 29.h4 f6 30.Ne1 Rb3 31.Rb6 Kf7 32.d5 ed5 33.ed5 Be5 34.Nf3 Kf8 35.Ne5+/– fe5 36.Rb7 Rd3 37.Rb4 Rd5 38.Rb6 Rd4 39.Re6 Kf7 40.Re5 Kf6 41.Rb5 Rh4 42.Kg3 Rh1 43.Kg4 Rg1 44.Kf4 Rh1 45.Rb6 Ke7 46.Kg5 Rg1 47.Kf5 Rh1 48.Kg6 Rg1+/– 49.Kh7 Rg5 50.f4 Rh5 51.Kg7 Rf5 52.Rb4 Ke6 53.Kg6 Rf6 54.Kg5 Rf5 55.Kg4 Rf8 56.Rb6 Ke7 57.Kg5 Rg8 58.Rg6 Ra8 59.Rg7 Kf8 60.Rc7 Ra6 61.f5 Rd6 62.Rb7 Ra6 63.Rd7 Kg8 64.Rc7 Kf8 ½–½. Scholz,Guenter – Rieseler,Wolfgang, BdF, 1997.

8.a3 Bf3 9.gf3 dc4 10.Bc4 ab4 11.ab4 Ra1 12.Ba1 Bb4?? 13.Ke2?? (better is 13.Qb4 A) 13...Nb6 14.Nd2 (14.Bd3+- Nfd5 15.Qb3 0-0 16.Bb2 Qf6 17.Be2 Qd8+-) 14...h6 15.e4 Qc7 16.h4 Nh5 17.Bf1 Nf4+-; B) 13...Qb6 14.Bc3 Nd5 (14...Qb4 15.Bb4 e5 16.Kd1 b5 17.Bb3 Rg8+-) 15.Qb6 N7b6 16.Bd3 Ke7 17.Rg1 Nc3+-) 13...Qb6 14.Be6?? (better is 14.Nc3–/+) 14...fe6–+ 15.Qe6 Kd8 16.Nd2 (16.Qc4–+) 16...Qa5 17.Ne4 (17.Qb3 Bd2 18.Qb7–+) 17…Qa6 (17...Qa6 18.Kd1 Qa1 19.Kc2 Qh1–+) 0–1. Bussers,Jean_Marie – Buss,Michael, corr ICCF TT/4/90–13, 2003.

8.b5 a4–/+ 9.Qc2 cb5 10.c5 Qa5 11.Nbd2 Bf3 12.gf3 –/+.

8.b5 a4–/+ 9.Qc2 Bf5 10.Bd3 (10.Qe2 cb5 11.cd5 Bb4 12.Kd1 a3=+) 10...Bd3–/+ 11.Qd3 dc4 12.Qc4 Qa5 13.Bc3 (13.Nc3 a3 14.Bc1 cb5=+) 13...cb5 14.Qd3 b4 15.Bd2 Qa6 16.Ke2 Ne4 17.Qa6 Ra6 18.Rc1 Rc6 19.Rc6 (19.Ne5 Ne5 20.de5 g5–/+) 19...bc6 20.Be1 (20.Ne1 Bd6–/+) 20...c5–+ 21.Kd3 f5 (21...Nef6 22.Nbd2–+) 22.Nbd2–/+ Nd2 (22...Nef6!?–/+) 23.Bd2=+ Bd6 24.dc5 Nc5 25.Kc4 Ne4 26.Bb4 Bb4 27.Kb4= Nf2 28.Ka4 Ke7 29.Kb5 Ng4 30.a4 Ne3 31.a5 Kd6 32.Nd4 Rb8 33.Ka6 Nd5 34.Rc1 Rb2–+ 35.Ka7 Ne7 36.Rc3? e5 37.Nb3 Nc6 38.Ka6 e4 39.g3 g5 40.Nc5 Nb4 41.Ka7 Na2 42.Rb3 Rb3 43.Nb3 f4 44.Kb6 e3 45.Nd4 Nb4 46.gf4 gf4 47.Kb5 Nc6!! 48.Nf3 Na5 49.Ka5 Kd5 50.Kb4 Ke4 51.Ng5 Kd3 (52.Nf3 e2 53.Ne1 Kd2 54.Nf3 Ke3–+) 0–1. Lindner,Jan Joost – Bellon Lopez,Juan Manuel (2455), Leon op, 1998.

8.b5 a4–/+ 9.Qd3 cb5 10.cd5 Nd5 11.Qb5 Bb4 12.Nbd2 Bf3 13.gf3 Rc8 14.Qa4 Qh4 =.

8.b5 Bf3 9.gf3 Bb4 10.Bc3 c5 =+.

9.Bc3 Qb6 10.Nbd2 (10.Qb6 Nb6 11.c5 Bf3 12.gf3 Na4=) 10...Qa7 (10...Qb3 11.ab3 Ra1 12.Ba1=+) 11.Bd3= Be7 12.0-0 0-0 (12...dc4 13.Qc4 Nd5 14.Qb3=) 13.c5 Rfb8 14.Qc2 Bf3 (14...Qa4 15.Qa4 Ra4 16.Rfb1=) 15.Nf3+= b6 16.Ne5 Qc7 (16...Ne5 17.de5 Ne4 18.cb6+=) 17.Nd7 (17.cb6 Nb6 18.a4 Nbd7+=) 17...Qd7 18.cb6 Rb6 19.a4 h6 (19...Rab8 20.a5 Rb3 21.a6+=) 20.a5+/– Rb7 (20...Rbb8 21.Rfc1+/–) 21.a6 Rba7 22.Rfb1 Ne4 (22...Bd6 23.Ba5 Ra6 24.Ba6 Ra6 25.Bb6 Ra1 26.Ra1+/–) 23.Ba5 Rc8 (23...Ra6 24.Ba6 Ra6 25.Rb8 Bf8 26.Rf8 Kf8 27.Bb4 c5 28.Bc5 Rd6 29.Ra8 Ke7+-) 24.Bb6+- Raa8 25.Be4 de4 26.Qe4 Qd5 (26...Rcb8 27.Qf3+-) 27.Qc2 (27.Qd5 cd5 28.a7 g6+-) 27...Qd7 28.a7 (28...Bf6 29.Qc5+-) 1–0. Woelfelschneider,Peter – Van Esbroeck,Dirk, corr, 1993.

9.Nc3 Ba3 10.Rc1 (10.Qa3 Qa3 11.Ba3 Ra3=) 10...Bb2 11.Qb2 Qa3 (11...Bf3 12.gf3 b6 13.Rg1=+) 12.Rb1 (12.Qa3 Ra3 13.Nd2 b6=) ½–½. Dopper,Johan – CM4000, 1616A, 1995.

10.a4 Bf3 11.gf3 Be7 12.a5 0-0 13.Nd2 c5 14.dc5 Rfc8 15.Qb2 Nc5 16.f4 (16.Be5 Qd8 17.cd5 ed5=+) 16...Ncd7 (16...dc4 17.Nc4 Qc6 18.Rg1=) 17.Rg1= g6 18.h4 dc4 19.f5 (19.Ra4 Nd5 20.Rc4 Nc5–/+) 19...ef5=+ 20.h5 (20.Ra4 Nc5 21.Rc4 Nd5–+) 20...Nd5 (20...Ne4 21.hg6 fg6 22.Bc4 Kf8 23.Bh8–/+) 21.Bc4 (better is 21.hg6!? hg6 22.Bc4 Nc3 23.Qc3–/+) 21...Nc3–/+ 22.hg6 Bf6 23.a6 (23.Qb4 Nd5 24.gh7 Kh8 25.Bd5 Ba1–+) 23...Nd5 (23...ba6!? 24.gf7 Kf8 25.Ba6–+) 24.gf7–/+ Kh8 25.Qb7 Ba1 26.Qd5 Bg7 (26...Nf6 27.Qg2 Ng4 28.Bd5 Ra6 29.f3–+) 27.Qf5–/+ Qe5 28.Rg5 Qa1 29.Ke2 Nf8 30.f4 h6 31.Rh5 0–1. marekt – hooks, ChessWorld.net, 2004.

10.Nbd2 Ra3 11.Qc2 =+.

10.Nbd2 dc4 11.Bc4= b5 12.Be2 (12.Bd3 Ra3 13.Qc2 Bd6=) 12...Ra3 13.Qc2 Bf5 14.Qc1 (14.Bd3 Bd3 15.Qd3 b4=+) 14...Bd6 15.Bb2 Ra6 16.a4 (16.0-0 0-0=) 16...Ra4 17.Ra4 ba4 18.Nh4 (18.Nc4 Bb4 19.Bc3 c5 20.Bb4 cb4 21.Nd6 Qd6 22.Qc8 Ke7 23.Qh8 Qb8 24.Qg7 b3+/–) 18...Be4–/+ (< 18...Bh2 19.Nf5 ef5 20.Qc2=) 19.f3 Bd5 20.e4 g5 (20...Ba2 21.Qa1 Bb4 22.Qa2=) 21.ed5=+ cd5 (21...gh4?! 22.dc6 Nb6 23.d5=) 22.Qc7 Bc7 23.Bb5 0-0 (23...gh4 24.Ba4 Rg8 25.Kf2–/+) 24.Ba4 (24.Ba3 Rb8 25.Ba4 gh4 26.Ke2–/+) 24...Ra8?? (24...gh4 25.Bc6 Rc8=+) 25.Bb3?? (25.Bc6 Ra2 26.f4 Rb2 27.fg5–+) 25...gh4–/+ 26.Kf2 Bd6 27.Bc3 Nb6 28.h3 Bf4 29.Rb1 Rc8 30.Bb4 Nc4 31.Nf1 Nh5 32.Bc5 Rb8 33.Ba2 Rb1 34.Bb1 Bg3 35.Kg1 Nf4 36.Be7? Ne2–+ 37.Kh1 Bf2 38.Bf6 h6 39.Bd3 Nf4 40.Bc2–/+ Nh5 41.Be7 f6 42.Bb4? Nf4 43.Bd1 Bd4 44.Be1 Ng6 45.Bc2 Kf7 46.Bg6 Kg6 47.Bh4 Bc3 48.Kg1 d4 49.Kf2 d3 50.g4 e5 51.Bg3 Kg5 52.h4 Kg6 53.Bh2 h5 54.Bg3 hg4 55.fg4 e4 56.Bf4 Bd4 57.Ke1 e3 58.h5 Kh7 (59.Be3 Be3 60.Ne3 Ne3–+) 0–1. Bonetti,Shane – Schulz,Hans_Juergen, TT–06 TSC, 2003.

10.Bd3 =.

10.Be2 dc4 11.Bc4 Bf3 12.gf3 Bd6 =.

11.Be2 0-0 12.0-0 Ra3 13.Qb2 Rfa8 14.c5 Ne4 (14...b6 15.Nb1 R3a4 16.cb6 Qb6 17.a3=+) 15.Bb4= R3a4 16.Bd1 R4a7 17.a3 (17.Ne4 de4 18.Nd2 Bd1 19.Rfd1 Nf6=) 17...b6 18.cb6 Qb6 19.Rb1 Rb7 (19...Bb4!? 20.ab4 Bf3 21.Nf3 Ra2=+) 20.Qc2 (20.Qc1 Bb4 21.Rb4 Qc7+=) 20...Bb4 (20...Nd2!? 21.Nd2 A) 21...Bb4? 22.Rb4 (< 22.ab4 Bf5 23.e4 de4–/+) 22...Bd1 23.Rb6 (23.Rd1?! Qa6=; 23.Qd1?! Qc7=) 23...Bc2 24.Rb7+-; B) 21...Bf5=) 21.Rb4+= (21.ab4? Bf5 22.Rc1 Ng3 23.Qc6 Qc6 24.Rc6 Nf1 25.Kf1 Rb4–+) 21...Qc7 22.Rb7 Qb7 23.Ne4 de4 24.Nd2 Bd1 25.Rd1 Ra3 26.Ne4 ½–½. Trokenheim,Marek – Hoegberg,Jan, corr SSKK 1–422, 1989.

10.gf3 e5 11.Qb7? ed4 12.ed4 Rb8 13.Qc6 Rb2 14.Qc8 Ke7 15.cd5 Nd5 –+.

10.gf3 e5 11.de5!? Ne5 12.f4 Nf3 13.Ke2 =+.

9.gf3 Ra5 10.Qb7 c5 11.cd5 Nd5 12.Bb5 +/–.

10.Nc3 b6 =+.

11.a4 b6 12.Bd3 =+.

11.a4 Be7 12.f4 0-0 13.c5 Rfb8 14.Qc2 b6 (14...h6 15.Bd3=) 15.cb6 Qb6 16.Bg2 (16.a5 Qd8=+) 16...c5 (16...Bb4 17.f5=+) 17.0-0 (17.a5 Qc6 18.f5 cd4 19.ed4 ef5–/+) 17...Qa6 (17...Rc8 18.dc5 Nc5 19.a5=+) 18.Rc1 Rc8 19.Qd1 (19.dc5 Nc5 20.a5 Nfe4=+) 19...cd4 (19...c4 20.Qf3=+) 20.Bd4 (20.Qd4 Nc5 21.Bf1 Qc6=+) 20...Rc1 (20...Qa5 21.Rc8 Rc8 22.Nd2=+) 21.Qc1 Rc8 22.Qd1 Bc5 23.Bc3 Be7 24.Bd4 Bc5 25.Bc3 Be7 (25...Qa7 26.Qd3=+) 26.Bd4= ½–½. pcmvr (2780) – bryntze (2655), net–chess.com, 2006.

11.a4 Be7 12.f4 b6 13.Rg1 =+.

11.Nd2 dc4 (11...Bd6 12.c5 Be7 13.Rb1=) 12.Bc4 b5 13.Be2 Ba3 (13...Nd5 14.Bd3=) 14.Bb4 (14.Rb1 Nd5=+) 14...Bb4=+ 15.Qb4 Ra4 (15...Nd5 16.Qb3=+) 16.Qc3 (16.Qb3 0-0=+) 16...Nd5 17.Qc2 (17.Qb3 0-0=+) 17...e5 18.Nb3 0-0 19.Bd3 g6 20.a3 (20.Rc1 Nb4 21.Qd2 Qd6–/+) 20...Rfa8 (20...Qd6 21.h4=+) 21.0-0 (21.Be4 Qd6 22.h4 f5 23.Bd5 Qd5–+) 21…Ra3–/+ (22.Ra3 Ra3–/+) 0–1. Cornacchini,Gabriele – Schulz,Hans_Juergen, T8e–07.26 TSC, 2002.

11.Bd3 Bd6 =+.

9.a3 ba3 10.Ba3 b6 11.cb6 Qb6.

9.a3 ba3 10.Ba3 b6 11.cb6 Nb6?! 12.Ne5=.

9.a3 ba3 10.Na3 Bf3 11.gf3 b6 12.cb6 Qb6 13.Qb6 Nb6 –/+.

9.Qb4 b6 10.Nbd2 –/+.

9.Be2 b6 10.cb6 Qb6 –/+.

10.Qb4 bc5 11.dc5 Bf3 12.gf3 Bc5 –+.

10.cb6 Nb6?! 11.Ne5=+.

11.Bd3 c5 12.dc5 Nc5 13.Qc2 Nd3 (13...Be7 14.0-0–+) 14.Qd3 Bf5 (14...Be7 15.0-0–+) 15.Qb3 Qa6 (15...Nd7 16.0-0–+) 16.Bf6 gf6 17.Nd4 Bg6 18.h4 Rc8 19.h5 (19.Qd1 Bd6–+) 19...Bd3 20.g4 (20.Qd1 Bd6–+) 20...Rc3 21.Qd1 Bd6 22.Rg1 Ra3 23.N2b3 (23.Nb1 Ra4–+) 23...Bc4 24.f4 (24.Rg2 Bb3 25.Nb3 Be5–+) 24...Ra2 25.Rg2 (25.Ra2 Qa2 26.Nd2–+) 25...Rg2 26.Ra6 Ba6 27.Qf3 (27.Nf3 Re2 28.Qe2 Be2 29.Ke2 Rg8–+) 27...Rg1 28.Kd2 Rg8 29.Qf2 (29.Nf5 R8g4 30.Nd6 Ke7 31.Kc2 R4g2 32.Nd2 Kd6 33.Qh3–+) 29...R8g4 30.Ne2 R1g2 31.Qe1 Be2 (32.Qe2 Re2 33.Ke2 Rh4–+) 0–1. Pierred (2235) – Sacronos (2435), Rated game, 3m + 0s, 2005.

11.Be2 Bd6 12.0-0 0-0 13.h3 Bh5 14.Rfc1 Rfc8 15.Qd1 Qa5 16.Ne5 Be2 17.Qe2 Qa6 18.Qd1 Qb5 19.e4 de4 20.Nd7 Nd7 21.Ne4 Be7 22.Qb3 Qd5 23.Ng3 Nb6 24.Re1 Rd8 (24...Na4 25.Rab1–+) 25.Re5 Qb3 26.ab3 Ra1 27.Ba1 c5 28.dc5 Nd7 29.Re3 Nc5 (29...Bc5?! 30.Rd3–/+) 30.Be5 Rd1 31.Kh2 Rb1 32.f4 (32.Bf4 Rb3 33.Nf5 Bf8 (33...ef5?! 34.Re7 h6 35.Be3–+) 34.Rb3 Nb3–+) 32...Nb3 33.Ne4 f5 34.Nf2 g5 35.g3 Nd2 (35...Bc5 36.Re2–+) 36.Rd3 Nc4 37.Rd7 Kf7 (37...gf4 38.Bf4 Bf6 39.Rc7–+) 38.Bd4 Ke8 39.Rc7 Nd6 40.Rc6 b3 41.Rb6 Nc4 42.Rb8 Kf7 43.Nd3 gf4 44.gf4 Bd6 45.Rb7 Kg6 46.Kg2 h6 47.Kg3 Kh5 48.Kf2 Ba3 49.Ke2 b2 50.Nb2 Bb2 51.Rb4 Bd4 52.Rb1 Nd6 53.Rd1 Bc5 54.Kf3 Kh4 55.Kg2 Nb5 56.Rc1 Bd6 57.Rc6 Bf4 58.Re6 Nd4 59.Ra6 Be3 60.Rd6 h5 61.Rd5 f4 62.Re5 Nb3 63.Re4 Nd2 64.Ra4 Kg5 65.Ra5 Kf6 66.Kh1 f3 67.Ra1 Kf5 68.Kh2 Ke4 69.Kg3 f2 70.Kg2 f1R 71.Rf1 Nf1 72.Kf1 Kf3 73.h4 Bd4 74.Ke1 Kg2 75.Ke2 Bf2 76.Kd3 Kf3 77.Kc2 Bh4 (78.Kb3 Bf6–+) 0–1. bambinik – axelo, internet, 2002.

11.h3 Bf3 12.Nf3 Qa5 –+.

7.Nf3 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 dc4 (10...c6 11.c5=+) 11.Bc4 Nb6 (11...Be4 12.d3 Bf3 13.gf3=+) 12.Be2 (12.d3 Qd6 13.Bf6 gf6=) 12...Qd6 (12...Qd5!? 13.Qb2 Qe4–/+) 13.Bf6= gf6 14.b5 Qb4 15.Qb4 Bb4 16.0-0 (16.Nc3 Kd7=) 16...Rg8 17.Kh1 (17.Kh2 Kd7=) 17...Kd7 18.Nc3 (18.Nh4 Be4=) 18...Ra8 19.Nh4 Bg6 20.g3 (20.Rc1 Bc3 21.dc3 Ra2=+) 20...Bc3 (20...c5 21.bc6 bc6 22.Kg2=) 21.dc3 Kc8 22.Ng6 fg6 23.Kg1 Ra2–/+ 24.Bd3 Ra3 25.Rc1 Na4 26.Kf1 Rc3 27.Rc3 Nc3 28.h4 Kd7 29.Ke1 Kd6 30.Kd2 Nd5 31.Be2 Kc5 32.Kc2 Kb4 33.Bf1 b6 0–1. Berkey,Eric – Myers,Charlie (1775), IECC, 2005.

7.Nf3 a5 8.a3 dc4 9.Bc4 Nb6 10.Bb5 c6 11.ba5 =+.

7.Nf3 a5 8.a3 c6 9.d3 dc4 10.dc4 ab4 11.ab4 Ra1 12.Ba1 Qb6 13.b5 cb5 14.cb5 Nc5 15.Qd1 (15.Qa2 Bb1 16.Qb1 Qa5 17.Ke2 Nce4 18.Bf6 Nf6=+) 15...Bb1 (15...Nd5 16.Be2–/+) 16.Qb1=+ Qa5 17.Ke2 Nfe4 18.Nd4?? (better is 18.g4=+) 18...Qd2 19.Kf3 Qf2 20.Kg4 h5# 0–1. Nokarookoff – pierred, ChessWorld.net, 2006.

7.Nf3 a5 8.ba5 dc4 9.Bc4 Nc5 10.Qb5 c6 =+.

7.Nf3 Be4 8.d4 =+.

7.Nf3 Be7 8.Be2 0-0 9.0-0 a5 10.a3 dc4 11.Bc4 Be4 (11...Nb6 12.d3=+) 12.Ne5 Ne5 13.Be5 Nd7 14.Bb2 Nb6 15.Be2 Qd6 (15...Bd5 16.Qc3 f6 17.b5=+) 16.b5 e5 (16...a4 17.Qc3 Bf6 18.d4=+) 17.d3= Bf5 18.Nd2 a4 19.Qc3 f6 20.Rac1 Rac8 21.Rfd1 Rfd8 22.Nf1 (22.Bf3 Qd3 23.Bb7 Qc3 24.Rc3 Rb8=) 22...Be6 (22...c6 23.bc6 Rc6 24.Qa5=+) 23.d4 e4 24.Nd2 Qd5 25.Rc2 (25.Qc2 f5=) 25...Bd6 26.Rdc1 Ra8 27.Ba1 (27.f3 ef3 28.Bf3 Qb5 29.Bb7 Nd5 30.Bd5 Bd5=) 27...f5 28.f4 (28.Qb2!?=) 28...Bf7 29.Qb2 Qe6 30.Nc4 Nc4 31.Bc4 Qg6 32.Be2 (32.Qc3 Kh8 33.Bf7 Qf7=) 32...Qg3=+ 33.Rc3 Bd5 34.Kh1 Rf8 35.Qd2?? (better is 35.Qc2=+) 35...Bf4!–+ 36.Kg1 (36.ef4 e3) 36...Qh2 37.Kf1 Bg3 38.Bc4 (38.Bh5 f4 39.Ke2 Qg2 40.Kd1 Bb3 41.Rb3 Qf1 42.Kc2 ab3 43.Kb1 Qb5 44.Be2–+) 38...Bc4 39.Rc4 f4 (40.Ke2 Qg2 41.Kd1 Qf1 42.Kc2 Qc4 43.Qc3 Qe2 44.Qd2 Qb5–+) 0–1. Miralles,Gilles – Ehlvest,Jaan, EU–ch U20 Groningen, 1982.

5.a3 c6 6.e3 Nbd7 7.Nc3 Be7 (7...Bf5 8.Qb3=+) 8.Nge2 (8.f3 Bf5 9.e4 de4 10.fe4 Bg6=) 8...Bf5 9.Qb3 (9.e4!? de4 10.Ng3–/+) 9...dc4–+ 10.Qa2 Ne5 11.Nc1 Nd3 12.Nd3 Bd3 13.Bd3 Qd3 14.Ne2 b5 15.Bd4 (15.Nd4 Ne4 16.Rd1 Rd8–+) 15...0-0 (15...a5 16.Qb2–+) 16.f3 (16.Nf4 Qf5 17.Qb2 a5–+) 16...a5–+ 17.Nf4 Qb3 18.Qb3 cb3 19.Rb1 (19.Rc1 ab4 20.ab4 Ra2–+) 19...ab4 20.ab4 Bb4 (20...Ra3 21.Bc5 Bc5 22.bc5–+) 21.Rb3 Bd6 22.Nd3 c5–+ 23.Bf6 gf6 24.Rb1 Ra2 25.Ke2 c4 26.Nc1 Ra5 27.d3 c3 28.Kd1 b4 29.Kc2 Rfa8 30.f4 Kf8 31.Rf1 Ke7 32.Rf2?? Rg8 33.d4 Rga8 34.e4? e5 35.fe5 fe5 36.d5 Ra2! 37.Na2 Ra2 (38.Kd3 Rf2–+) 0–1. Wilk,Krzysztof (1980) – Soltysik,Pawel (2070), Poland–chT2 U18, 1996.

5.a3 c6 6.e3 Nbd7 7.cd5 cd5 8.Nc3 a5 9.ba5 Ra5=+.

5.a3 c6 6.e3 Nbd7 7.Be2 Be2 8.Ne2 Be7 (8...dc4 9.Qc4 a5 10.0-0=+) 9.f4 (9.c5 0-0=) 9...0-0 10.0-0 (10.c5 b6=+) 10...Re8 (10...dc4 11.Qc4 a5 12.ba5 Qa5 13.d3=+) 11.Ng3 (11.c5 b6 12.Bf6 Nf6=) 11...a5 12.ba5 (12.c5 b6=+) 12...Qa5 13.Nc3 (better 13.cd5!? ed5 14.Nf5=+) 13...dc4-+ 14.Nce4 Qd5 15.Rfd1 Ne4 16.Ne4 Nc5 (16...b5 17.Qc3 Nf6 18.Nf2-+) 17.Nc5-/+ Qc5 18.Bd4 Qd5 19.a4 b5 20.Qb2 (20.d3 cd3 21.Rd3 Red8-/+) 20...Bf8 (20...ba4!? 21.Bg7 Reb8 22.Qe5-+) 21.ab5-/+ cb5 22.Bc3 (22.d3 Ra1 23.Qa1 Ra8-/+) 22...Qc5 (22...b4 23.Bd4-+) 23.Rab1 (23.Ra8 Ra8 24.Rb1 Rb8-+) 23...Rab8 (23...Reb8 24.Bd4 Qf5 25.d3 cd3 26.Qc3-+) 24.Be5 Rb7 25.Bd4 Qd5 26.d3 cd3 27.Rd3 Qe4 28.Rb3 (28.Rbd1 Rc8-/+) 28...b4 (28...Rc7 29.Qe2 Rc2 30.Qf1-+) 29.h3 (29.Rc1 Ra8-/+) 29...Rc7 30.Rc1 Rec8 31.Rc7 Rc7 32.Qb1 Rc2 33.Qf1 h5 34.Qf3 Qf3 35.gf3 h4 36.Bb6 Rc3 37.Rc3? (better 37.Rb2-+) 37...bc3 38.Bd4 c2 (better 38...Bb4-+) 39.Bb2-/+ Bb4 40.Bc1 Kh7 (40...f5 41.Kf1-/+) 41.Kf2 Kg6 (41...f5 42.e4=+) 42.Ke2= Kf5 (42...f6 43.Kd3=) 43.Kd3 e5 (43...Kf6 44.Kc2 Ke7 45.Kd3=) 44.fe5 Ke5 45.Kc2 g5 46.Kd3 f5 47.Ke2 Bc3 48.Ba3 g4 (better 48...Kf6=) 49.Kf2?? (better 49.fg4 fg4 50.hg4+/-) 49...gh3 (49...g3 50.Kg2 Ke6 51.e4=+) 50.Be7 (50.Kg1 Bd2 51.e4 fe4 52.fe4 Bf4 53.Bd6 Kd6 54.e5 Kd7 55.e6 Ke7=+) 50...Bd2 (50...Be1! 51.Kg1 Bg3=+) 51.Bh4= h2 (51...f4 52.ef4 Bf4 53.Bg3=) 52.Kg2 (better 52.Bg3 Kd5 53.Bh2+/-) 52...Be3=+ 53.Bg3 (53.Bg3 f4 54.Bh2=) 1-0. cipiripi (2250) - uoylliki (2300), Rated Blitz game, lichess.org, 2015.

5.a3 Be7 6.e3 0-0 7.d4 Nbd7 8.Bd3 c6 9.h3 Bh5 10.Nd2 a5 11.c5 b6 12.Ngf3 Bg6 13.0-0 (13.Bg6 hg6 (worse 13...fg6 14.Ng5+/-) 14.0-0 ab4 15.ab4 Qc7=) 13...Qc7 (13...Bd3 14.Qd3 ab4 15.ab4=) 14.Rfe1 (14.Bg6 hg6 15.cb6 Qb6=) 14...ab4 (14...Bd3 15.Qd3 Rfb8 16.Bc3=) 15.ab4 (15.Bg6 hg6 16.ab4 Qb7=) 15...Bd3 16.Qd3 b5 17.Ra3 Ra3 18.Qa3 Ne4 (18...Qb7 19.Ra1=) 19.Ra1 (19.Ne4 de4 20.Nd2 Nf6+=) 19...Nd2= 20.Nd2 Rc8 (20...Re8 21.Qa7 Qc8 22.Nf3=) 21.Qa7 Nf6 (21...Qd8 22.Nf3+=) 22.Nf3 Qa7 (22...Qd8 23.Ne5+/-) 23.Ra7+/- Kf8 24.Ne5 Ke8 25.Ra6 1-0. cipiripi (2235) - uoylliki (2315), Rated Blitz game, lichess.org, 2015.

5.e3 Bb4 6.f3 (6.Qb3 Nc6 7.a3 Be7 8.Qb7 Na5=+) 6...Bf5-/+ 7.Qa4 Nc6 8.a3 Ba5 (8...Bd6 9.cd5 ed5 10.Ba6-/+) 9.Nc3 (9.cd5 Bb1 10.Bf6 Qd5-/+) 9...0-0 10.cd5 ed5 (10...Nd5 11.e4 Nb6 12.Qb5-+) 11.Bb5 d4 12.Nd1?? (12.Bc6 dc3 13.dc3-+) 12...de3-+ 13.Bc6 (13.Kf1 Qd2 14.Qh4-+) 13...Qd2 14.Kf1 Bd3 (14...Qe1) 15.Ne2 Be2 (15...Qe1) 16.Kg1 Qe1 0-1. ClayPigeons (2170) - MattBuckley (2155), Rated Bullet game, lichess.org, 2021.

5.Nf3 Nbd7 6.a3 =+.

5.Nf3 Bf5 6.Qa4 c6 (6...Nbd7 7.cd5 Nd5 8.a3=+) 7.cd5 (7.c5 a5=+) 7...ed5 8.e3 Bd6 9.Be2 0-0 (9...b5 10.Qb3=+) 10.d3 (10.0-0 b5 11.Qb3 a5 12.ba5 Ra5=+) 10...Nbd7 (10...b5 11.Qb3=+) 11.0-0 a5 12.b5 (12.ba5 Qa5 13.Qa5 Ra5=+) 12...Nc5 13.Qh4 (13.Qd1 cb5 14.Na3 b4=+) 13...Bd3–/+ (13...Nd3?! 14.Bf6 Qf6 15.Qf6 gf6 16.bc6 bc6 17.Nd4=) 14.Nc3 (14.Bf6!? Qf6 15.Qf6 gf6 16.Nc3–/+) 14...Nfe4 15.Qh5 f5 (16.Nd4 Qf6–/+; 15...cb5 16.Rfd1 Nf6 17.Qg5 Be2 18.Ne2–/+) 0–1. alishsan – pierre (2055), internet, 2006.

5.Qa4 Bd7 6.Qb3 Nf6 7.e3 Bd6 8.Nf3 Nc6 9.a3 0-0 10.Be2 Qe7 11.Nc3 (11.0-0 Rfe8=) 11...d4 12.Nb5 de3 13.de3 Rfe8 (13...Be6 14.Qc2=) 14.Rd1 Bg4 (14...Be6 15.Qc2=) 15.Nd6+= cd6 16.Nd4 (16.Qd3 Rad8+=) 16...Nd4= 17.Rd4 (17.Bd4 Be2 18.Ke2 Rac8=) 17...Be2=+ 18.Ke2 Rac8 19.Rhd1 (19.Re1 Qe5 20.Red1 Qb5 21.R4d3 Ng4=) 19...Ne4 20.f3 (20.g3!?=+) 20...Nc3!–/+ 21.Bc3 (21.Qc3 Rc3) 21...Qe3 22.Kf1 Rc3 (22...Qc3?! 23.Qc3 Rc3 24.a4=) 23.Qd5 (23.Qb2 Ra3 24.Rd6 Rb3–+) 23...Rc2 (23...Qe2 24.Kg1–/+) 24.R4d2 Rd2 25.Qd2 Qa3 26.Qd6 Qe3 27.Qd3 Qe6 28.Qd7 (28.Qe4 Qc8 29.Qd5 Qc2–/+) 28...Qe2 29.Kg1 b6 30.Qd2 Re5?? (better is 30...Qb5!?–/+) 31.Qd8 (better is 31.Qe2 f6 32.Qa2 Kf8 33.Rd7+-) 31...Re8= 32.Qd2 Qe5 (32...Qb5 33.Qf4–/+) 33.g3 (33.f4 Qb5–/+) 33...a5 34.ba5 ba5 35.Qc2 h6 36.f4 Qg5?? (36...Qe3 37.Kh1 Qe2 38.Qe2 Re2=+) 37.fg5+- (37...Rf8 38.gh6 gh6 39.Qf5+-) 1–0. Dagoberg,M – Panuzzo,J, Telecomm, 1995.

5.Qb3 Nf6 6.Nf3 Bd6 7.Nc3= c6 8.e3 0-0 9.Be2 Nbd7 10.0-0 Re8 11.h3 (11.a3 Qe7=+) 11...Bf3 12.Bf3 Ne5 13.Be2 Bc7 (13...b5 14.d3=+) 14.Rad1 (14.Rfd1!?=) 14...b5=+ 15.a4 (15.d3 Qd6 16.f4 Ng6–/+) 15...a6 16.g3 Qd6 17.d3 (17.ab5 ab5 18.d3 Ng6=+) 17...Ng6 18.e4 (18.Bf3 Nh4 19.Bg2 Re3–+) 18...a5 (18...d4 19.Nb1 Nf4 20.Bf3–/+ (worse 20.gf4 Qf4 21.Qf7 Kf7 22.Bh5 Nh5 23.Kg2 Qh2 24.Kf3 Qh3 25.Ke2 Nf4 26.Ke1 Qf3 27.Kd2 Qd3 28.Kc1 Ne2)) 19.ba5 (19.ab5 ab4 20.Na2 Nf4–/+) 19...Ra5 20.Ba3 (better 20.ab5 d4 21.e5 Qe5 22.b6 Bb6 23.Ne4–/+) 20...Qd7–+ 21.Bf3 d4 22.Ne2 Qh3 23.Bg2 (23.Nd4 Nh4 24.Qc2 b4–+) 23...Qh5 24.Nd4 Ng4 25.Nf3 N6e5 26.Nh4 ba4 27.Qc3 g5 28.f3 gh4 29.fg4 Qg4 30.gh4 Rb5 31.Bc5? (31.Bc1–+) 31...Re6 32.Qc2 Rg6 33.d4 (33.Bd4–+) 33…Nc4 (33...Nc4 34.d5 Rb2 35.Qb2 Nb2–+) 0–1. DEFFM – GuestSFMJ, freechess.org, 2020.

5.Nf3 Bb4? 6.Bg7 Bf3 7.ef3 Nf6 8.Bh8 Qe7 9.Qe2 Nbd7 +-.

5.Nf3 Bb4? 6.Bg7 Bf3 7.gf3+– (7.Bh8?! Be4+–; < 7.ef3 Nf6 8.Bh8 Qe7 9.Qe2 Nbd7+–).

5.Nf3 Bb4? 6.Bg7 Bf3 7.Bh8?! Be4 +-.

5.Nf3 Bf3 6.ef3 Nf6 7.a3 Bd6 8.Bd3 0-0 9.0-0 c6 10.Nc3 Nbd7 11.Rc1 Re8 12.Ne2 Be5 13.Qc2 Bb2 14.Qb2 Qb6 15.Ng3 a5 16.Nf5 ab4 17.ab4 Ra4 18.b5 c5 19.Rfe1 Raa8 20.h4 h6 21.g4 Re1 22.Re1 Re8 23.Re8 Ne8 24.Ne3 d4 25.Nc4 Qc7 26.Qa3 Kf8 27.Qa8 Ke7 28.Be4 Nb6 29.Nb6 Qb6 30.Qb7 Qb7 31.Bb7 Kd6 32.Be4 c4 33.b6 Nf6 34.b7 Kc7 35.Kf1 Ne4 36.fe4 Kb7 37.Ke2 Kc6 38.f4 f6 39.Kd1 Kc5 40.h5 Kd6 41.Ke2 Kc5 42.Kf3 Kd6 43.Ke2 Kc5 44.Kd1 Kd6 45.Kc2 Kc5 46.Kb2 Kd6 47.Ka3 Kc5 48.Ka4 c3 49.Kb3 cd2 50.Kc2 d1Q 51.Kd1 d3 52.Kd2 Kd4 53.e5 fe5 54.g5 ef4 55.gh6 gh6 56.Ke1 f3 57.Kf2 d2 58.Kf3 d1Q 59.Kf4 Qd3 60.Kg4 Qe4 61.Kh3 Qf4 Normal 0-1. carlos78 (2280) - jaimepaslestricheurs (2060), Rated Blitz game, lichess.org, 2015.

5.h3 Be6 6.Nf3 Nf6 7.Qa4 (7.Nd4 Bd6 8.Nc3 0-0 9.a3 a5 10.b5; 7.e3 Bd6 8.a3 0-0 9.Be2 Qe7 10.Nc3; 7.a3 a5 8.ba5 Ra5 9.Nd4 Bd7 10.e3; 7.Ng5 Bd6 8.Ne6 fe6 9.a3 0-0 10.e3) 7...c6 8.b5 Bd6 9.e3 0-0 10.Be2.

6.a3 Bd6=+ 7.e3 0-0 8.Be2 c6 9.0-0 Re8 10.Nc3.

6.Qa4 Nbd7 7.Nd4 c6 8.Qb3 Bd6 9.b5 c5 10.f3.

6.Qb3 Nc6 7.h3 (7.Qe3 Be6 8.a3 Be7 9.Ng5 Qd7 10.Ne6) 7...Bf3 8.gf3 (8.ef3 Bd6 9.b5 Ne5 10.f4) 8...Bb4 9.a3–/+ Bc5 10.Qb7.

6.Qb3 Nbd7 7.Nd4 Nb6 8.e3 Bd6 9.Bb5 Bd7 10.Bd7.

6.Ne5 Bf5 7.Qa4 Nbd7 8.Qb5 Rb8 9.Qa5 a6 10.Nd7.

6.Qa4 c6 7.Nf3 (7.b5 a6 8.e3 Nf6 9.Qf4 Be4 10.Bf6) 7...Nf6 8.b5 Bd6 9.bc6 Nc6 10.Nc3.

6.e3 Nd7 7.Nf3 (7.Qh5 Be4 8.d3 Bb4 9.Kd1 Bg6 10.Qd5; 7.Qf3 Be4 8.Qd1 Ngf6 9.a3 a5 10.d3; 7.a3 Ngf6 8.Nf3 Bd6 9.Nd4 Bg6 10.Be2; 7.Nc3 Ngf6 8.Qb3 Be6 9.Nb5 c6 10.Nd4) 7...Ngf6 8.Nd4 Bg6 9.a3 a5 10.b5.

6.Nf3 c6 7.a3 (7.Nd4 Bg6 8.a3 Nf6 9.e3 a5 10.ba5; 7.Nc3 Nf6 8.a3 a5 9.b5 Bc5 10.e3) 7...Nf6 8.e3 Bd6 9.Be2 0-0 10.0-0.

6.Nf3 Nd7 7.Nc3 (7.Qb3 Ngf6 8.Nc3 c6 9.e3 Bd6 10.Be2; 7.Nd4 Bg6 8.a3 a5 9.b5 Bd6 10.e3) 7...Ngf6 8.a3 a5 9.b5 Bc5 10.e3.

7.a3 Bd6 8.Nc3 c6 9.e3 0-0 10.Be2.

7.Qa4 c6 8.b5 Bd6 9.bc6 Nc6 10.Nc3.

7.Qb3 Be7 8.e3 0-0 9.Nd4 Bg6 10.Be2.

7.Nd4 Bg6 8.Nc3 Bd6 9.Ncb5 Be7 10.a3.

7.e3 Bd6 8.Qa4 c6 9.Be2 b5 10.Qb3.

7.g4 Be4 8.b5 (8.a3 a5 9.b5 Bf3 10.ef3) 8...a6= 9.e3 ab5 10.Bb5.

5.e3 Nd7 (5...Nf6 6.a3=+) 6.a3 (6.c5 a5 7.a3 ab4 8.ab4 b6=) 6...Ngf6 7.d4 (7.Nf3 dc4 8.Bc4 a5=) 7...Be7 8.Nf3 0-0 9.Nbd2 a5 (9...c6 10.Be2=+) 10.b5= c5 (10...Rc8 11.c5=) 11.cd5 ed5 (11...Nd5? 12.e4 Re8 13.ef5 (13.ed5?! ed5 14.Be2 c4+/–) 13...ef5 14.Be2+-) 12.dc5 Nc5 13.Nd4 Nd3 14.Bd3 Bd3 15.N2f3 Be4 (15...Bc4 16.Rc1=) 16.0-0 Nd7 (16...Rc8 17.Qd2=) 17.Rc1 (17.Qe2 Nc5 18.Rfd1 Rc8=) 17...Nc5 18.Ne1 (18.Qd2 Qb6=) 18...Qb6 (18...Rc8 19.Qd2=) 19.a4 (19.f3 Bg6=+) 19...Bf6 (19...Rac8 20.Qg4 Qh6 21.Ba3=+) 20.f3 (20.Bc3 Rac8=) 20...Bg6=+ 21.Rc3 Rfe8 22.Ra3 Ne6 23.f4 Nd4 24.Bd4=+ Bd4 25.Qd4 Qd4 26.ed4 Be4 27.Nf3 Bf3 28.Rff3–/+ Re4 29.g3 Rd4–/+ 30.Rfd3 Rd3 31.Rd3 Rd8 32.Kf2 Kf8 33.Rc3 Ke7 34.Ke2 Re8 35.b6 Kd6 36.Kd2 h5 37.h4 g6 38.Rc7 Re7 39.Rc8 f5 40.Rg8 Re6 41.Rc8 Re4 42.Rg8 Kc5 43.Rg6 Ra4 44.Rf6 Ra3 45.Rf5 Rg3 46.Rh5 a4 47.Rh8 Rf3 48.h5 Rf4 49.h6 Rh4 0–1. Woschkat,Karl_Heinz (2175) – Buettner,Fritz (2255), CiF, 1998.

6.d3 dc4 7.Qc4 Qd5 8.Qc3 a5 9.ba5 Nc6 10.e4 Be4 –/+.

6.cd5 ed5 7.Qf3 Be4 8.Bf6 gf6 9.Qe3 f5 10.Nf3 Qf6 =+.

6.e3 dc4 7.Bc4 Nc6 8.a3 a5 9.b5 a4 10.Qd1 Na5 =+.

6.e3 Nc6 7.a3 dc4 8.Bc4 a5 9.b5 a4 10.Qd1 Na5 =+.

6.e3 Nc6 7.b5 Na5 8.Qa4 Nc4 9.Bc4 dc4 10.Qc4–+ Bd3 –+.

6.e3 Nc6 7.b5 Nb4 8.Na3 Ne4 9.d4 (9.Bd4 dc4 10.Bc4 Qh4–/+) 9...c6 (9...c5 10.cd5 (10.Nf3 Qa5–+) 10...cd4–+) 10.c5? (better is 10.Bc3 Qa5–+ (10...Nc3 11.Qc3=+)) 10...Qa5 11.Bc3? (11.Ke2 Nd3! 12.Qd3 Nf2 13.Qd2 Qd2 14.Kd2 Nh1 15.Nf3–+) 11...Nd3!! 12.Bd3 Nc3 (< 12...Qc3 13.Qc3 Nc3 14.Bf5 ef5 15.bc6 bc6 16.Ne2+=) 13.Bf5 (13.Rd1 Nb5 14.Ke2 Nc3 15.Ke1 Nd1 16.Kd1 Bd3 17.Qd3–+) 13...Ne4 (13...ef5?! 14.Kf1 Be7 15.bc6 bc6 16.Ne2 Ne2 17.Ke2=) 14.Ke2 (14.Kf1 Nd2 15.Ke2 Nb3 16.ab3 ef5 17.Nf3–+) 14...Qd2 (14...ef5?! 15.Nf3=) 15.Kf3 Qf2 (15...ef5?! 16.Rf1 Qa5 17.Nb1=) 16.Kg4 h5# 0–1. McGhee – marekt, ChessWorld.net, 2008.

6.e3 Nc6 7.c5 a5 8.a3 Be7=+ 9.b5 a4 10.Qd1 Na5 =+.

6.e3 Nbd7 7.Nf3 c6 8.a3 a5 9.d3 ab4 10.ab4 Ra1 =+.

6.e3 Be7 7.a3 0-0 8.cd5 Qd5 9.Qd5 ed5 10.Nf3 a5 =+.

6.Nf3 Nbd7 7.Nc3 a5 8.g4 Bg6 9.g5 dc4 10.Qc4 Nb6 =+.

6.Nf3 Nbd7 7.cd5 ed5 8.Nd4 Bg6 9.e3 a5 10.Nc3 ab4 =+.

6.Nf3 Bb4?? 7.Bg7 Nf6 8.Bh8 +-.

6.Nf3 Nf6 7.Qb3 Bd6 8.Nc3 c6 9.e3 Nbd7 10.Be2 0-0 11.Nd4 Bg6 12.0-0 a5 13.a3 ab4 14.ab4 Qe7 15.f4 h6 16.Ba3 Ra7 17.Ra2 Rfa8 18.Rd1 Ne4 19.Ne4 Qe4 20.Rda1 Bf4! 21.Bf3 (21.ef4 Qd4 Deflection (21...Qd4 Overloading)) 21...Qe5 22.Bg4 Nf6 23.Nf3 Qe4 24.ef4 h5 (worse is 24...Ng4 25.hg4 Qf4 26.Qc3+=) 25.Bc1 ½–½. marekt – JohanK, ChessWorld.net, 2012.

6.Nf3 Nf6 7.e3 Bd6 8.g4 Be4 9.Nc3 (9.a3 0-0+=) 9...Bb4 10.Ne4 de4 (worse is 10...Ne4 11.Qb3 Nc6 12.a3+/–) 11.Nh4 (11.Qa4 Nc6 12.Bb5 Qd6=) 11...Nc6 12.Nf5 0-0 13.Ng7 Kg7 14.g5 Qd5 15.a3 (better is 15.Bf6 Kg8 16.Qc2+=) 15...Qg5–/+ 16.h4 Qg6 17.ab4 Kh6 (17...Rfd8!?+=) 18.b5= Ne7 19.Rc1 Nfd5 20.Rc4 a6 21.h5 Qe6 22.Qc2 ab5 23.Re4 Qc6 (23...Qd7 24.Qb3=) 24.Rg4+= f6 (24...Qc2?? 25.Bg7) 25.Rg6?? (better is 25.Qb3 Qe6 26.Rhg1+=) 25...hg6–+ 26.hg6 Kg7 27.Rh7 Kg8 28.Qe4 Ra1 29.Ba1 Qc1 30.Ke2 Qc4 31.d3 (31.Qc4 bc4 32.Bg2 b5+/–) 31...Qe4+= 32.de4 Ng6 33.Rd7 Ra8 34.Bd4 (worse is 34.Rd5 Ra2 35.Rd2 Ra1 36.Rd8 Nf8+=) 34...c5 35.ed5 (worse is 35.Bc5 Ra2 36.Ke1 Nc3=) 35...Ra2 36.Kf3 cd4 37.ed4 Nh4 38.Ke4 f5 39.Ke3 Ra3 40.Kf4 Rf3 41.Kg5 Rf2 42.Bh3 Nf3+= 43.Kf6 Nd4 44.d6 Ra2 45.Rb7 Ra6+= 46.Rd7 Ra2 47.Rd8 Kh7 48.Bf5 Nf5 49.Kf5 Rd2 50.Ke6 Re2 51.Kd5 Rd2 (51...b4 52.d7 Rd2 53.Kc6 Rc2 54.Kb5=). Woelfelschneider,Peter – Mueller_Toepler, 2009.

6.Nf3 Nf6 7.e3 Nbd7 8.b5 Nc5 9.Be2 Nd3 10.Bd3 Bd3 11.Nc3 Bd6 12.Qb3 Be7 13.a4 0-0 14.Ne5 Bf5 15.0-0 a6 16.d4 ab5 17.ab5 Qd6 18.Na4 Qb4 (18...Qe6 19.Rfc1 Rfc8 20.Nc5 Bc5 21.dc5=) 19.Qb4 Bb4 20.Rfc1 Bd6 21.g4 Bd7 22.g5 Be5 23.de5 Ne4 ½–½. Degterev,Pavel (2530) – Moser,Reto (2285), Champions League, 2007.

6.Nf3 Nf6 7.e3 Nbd7 8.g4 Bg6 9.a3 c6 10.Rg1 Ne4 11.d3 Nd6 12.Nbd2 a5 13.g5 ab4 14.ab4 Nb5 15.Ra8 Qa8 16.Qb3 Nb6 17.Nh4 Qa4 18.Ng6 Qb3 19.Nb3 Bb4 20.Kd1 hg6 21.Bg7 Rg8 22.Rg4 c5 23.Bf6 Kd7 24.Kc2 Ra8 25.Nc1 Be1 26.Rf4 Ra4 27.Ra4 Na4 28.Bg2 Kd6 29.f4 Bc3 30.Bd8 Na3 ½–½. Degterev,Pavel (2275) – Fleischanderl,Fritz (2180), WC–2010–S–00006, 2007.

4.Qb3 dc4 5.Qc4 e5 (5...c6 6.e4=) 6.e3 (6.Be5!? Nc6 7.Bc3=) 6...Nbd7+= 7.Qb3 Be6 8.Bc4 Bc4 9.Qc4 c5 10.b5 Bd6 11.e4 Nb6 12.Qc2 Qd7 13.a4 (better is 13.Nf3!?+=) 13...Qg4 –/+ (13...Qg4 14.Kf1 A) worse is 14...Ne4 15.f3 Nd2 16.Nd2+/– (worse is 16.Qd2 Qe6+=); B) 14...Qe4 15.Qe4 Ne4–/+) 0–1. Krivoshapko,Alexander – Bogachkova,Alena, Omsk Russia, Summer Open, 2013.

4.cd5 Qd5 5.h3 Qh5 6.Nc3 e5 7.g3 Nc6 (worse is 7...Bb4 8.Bg2 Bd7 9.Bb7+/–) 8.Bg2 Bd7 9.b5 Nd4 10.Nf3 Bd6 (worse is 10...Nb5 11.Nb5 Bb5 12.Ne5+/–) 11.e3 Ne6 12.d4 ed4 13.ed4 a6 (worse is 13...Bb5 14.d5 Bd7 15.g4+-) 14.g4 Qh6 15.Ne5 Bb5 16.Nb5 ab5 17.Bb7 0-0 18.Ba8 Ra8 19.Qf3 Ra4 20.a3 (20.Nc6!?+=) 20...Nd4= 21.Bd4 Rd4 22.0-0 Qf4 23.Qf4 Rf4 24.Rfe1 h5 25.gh5 Rh4 26.h6 gh6 27.Rab1 (27.Kg2!?=) 27...Rh3+= 28.Rb5 Ra3 29.Nc4 Ra4 30.Nd6 cd6 31.Re3 d5 32.Rg3 Kf8 33.Rb8 Ke7 34.Re3 Re4 35.Rb7 Kf8 36.Re4 de4 37.Kg2 Nh5 38.Kf1 Kg7 39.Re7 ½–½. Degterev,Pavel (2275) – Bendig,Frank (2205), ST–2009–0-00059, 2009.

4.cd5 Nd5 5.a3 a5 =.

4.Bf6 ef6 5.cd5 Qd5 6.Nc3+= (6.a3 c5 7.Nc3 Qd7 8.bc5 Bc5 9.h3) 6...Qd7 7.Qc2 Nc6 8.a3 Rd8 9.e3.

4.Bf6 gf6 5.cd5 (5.h3 Bf5 (5...Be6 6.cd5 Bd5 7.Nc3 e5 8.Qa4 c6 9.Nd5) 6.cd5 Qd5 7.Nc3 Qd6 8.Rc1 c6 9.b5) 5...e6 (5...Qd5 6.Nc3 (6.h3 Bd7 7.Nc3 Qd6 8.a3 Nc6 9.e3) 6...Qd6 7.Rc1= c6 8.h3 Bd7 9.Nf3) 6.Qa4 (6.de6 fe6 7.f3 (7.Qa4 Qd7 8.b5 Rg8 9.Nc3) 7...Bh5+= 8.a3 Bd6 9.e3; 6.f3 Bh5 7.de6 fe6 8.a3 Bd6 9.e3) 6...Nd7 (6...Qd7 7.Qd7 Nd7 8.f3+= Bf5 9.Nc3) 7.e4 (7.Nc3!?+= ed5 8.Nd5 Be6 9.Nc3; 7.f3 Bf5 8.e4 Bg6 9.de6) 7...c6 (better is 7...ed5!? 8.ed5 (8.f3 Be6 9.Qb5) 8...Qe7 9.Be2 Rg8=) 8.dc6 +/–. Zimmer – Plath, corr SOK–89–39, 1989.

4.a3 A) 4...Nd7 5.h3 (5.f3 Bh5 6.e4 e5 7.ed5=+; 5.Nf3 Ngf6 6.c4 a5 7.c5=+; 5.c4 e5 6.cd5 cd5 7.d4=+) 5...Bh5 6.c4 e5 7.cd5=; B) 4...e6 5.Nd2 (5.h3 Bh5 6.g4 Bg6 7.Nf3=; 5.f3 Bh5 6.Nh3 Nf6 7.e4=+; 5.Qd2 a5 6.h3 Bf5 7.Nf3=+; 5.Bd4 Nd7 6.h3 Bh5 7.g4=+; 5.Ra2 a5 6.ba5 Qa5 7.Qd2=+) 5...a5 6.h3 Bh5 7.g4=; C) 4...Nf6 5.Qd2 (5.h3 Bc8 6.Nf3 a5 7.Nbd2=; 5.Nd2 e6 6.h3 Bh5 7.g4=; 5.f3 Bh5 6.e4 e6 7.g4=; 5.g3 a5 6.f3 Bc8 7.e4=+) 5...Bh5 6.e3 Nbd7 7.Be2=; D) 4...f6 5.d4 (5.h3 Bh5 6.Nf3 e5 7.e3=; 5.f3 Bh5 6.e3 e5 7.d4=; 5.f4 e6 6.h3 Bh5 7.Nf3=+; 5.Nd2 e5 6.d4 a5 7.h3=+) 5...e6 6.f3 Bh5 7.e3=; E) 4...a5 5.Qd2 (5.f3 Bc8 6.e4 d4 7.c3=+; 5.h3 Bh5 6.g4 Bg6 7.Bg2=+; 5.Nf3 Bf3 6.ef3 e6 7.c3=+; 5.Nd2 Na6 6.ba5 Qa5 7.Ngf3=; 5.ba5 Qa5 6.Qd2 Nd7 7.f3=) 5...Nd7 6.h3 Bh5 7.g4=.

4.Nd2 Qb6 (4...Na6 5.a3+= (5.h3 Bd7 6.a3 c5 7.bc5=; 5.f3 Bc8 6.a3 Nc7 7.e3=) 5...e6 6.c4 Nc7 7.h3=; 4...f6 5.h3 (5.d4 e5 6.a3 a5 7.h3=+; 5.a3 e5 6.h3 Be6 7.d4=+; 5.f3 Bc8 6.c3 e5 7.e4=+; 5.Ngf3 e5 6.c3 a5 7.ba5=+; 5.c3 e5 6.Ngf3 a5 7.ba5=+) 5...Bh5 6.Ngf3 e5 7.a3=; 4...a5 5.f3 (5.ba5 Qa5 6.h3 Bh5 7.g4=; 5.h3 Bh5 6.ba5 Qa5 7.g4=; 5.a3 Na6 6.ba5 Qa5 7.Ngf3=) 5...Bc8 6.ba5 Qa5 7.e4=; 4...Nf6 5.f3 (5.a3 e6 6.h3 Bh5 7.g4=; 5.h3 Bh5 6.g4 Bg6 7.Ngf3=; 5.Rb1 a5 6.b5 cb5 7.Bf6=+) 5...Bc8 6.e4 e5 7.Be5=; 4...Qd6 5.h3 Bc8 6.a3 Nf6 7.Ngf3=; 4...e6 5.a3 (5.f3 Bh5 6.e4 Nf6 7.a3=+; 5.h3 Bh5 6.g4 Bg6 7.Ngf3=; 5.c4 Nf6 6.a3 a5 7.h3=+; 5.Rb1 a5 6.ba5 Ra5 7.h3=+; 5.c3 Nf6 6.h3 Bh5 7.Ngf3=+) 5...a5 6.h3 Bh5 7.g4=) 5.c3 (5.h3 A) < 5...Qb4 6.Rb1 (6.hg4?! Qb2 7.Rb1 Qa2=) 6...Bc8 7.Bg7 Qb1 8.Qb1 (< 8.Nb1 Bg7 9.Nf3 Be6+/–; 8.Bh8 Qa2 9.e3 Na6–/+) 8...Bg7 9.Ngf3+-; B) 5...Bh5+= 6.a3 f6 7.Ngf3=; C) 5...Bd7 6.a3 c5 7.Ngf3=; 5.a3 c5 6.h3 Bd7 7.Ngf3= –0.03/9) 5...Nd7 (5...e5 A) 6.Ngf3 A1) 6...Nd7 7.e4=+ (7.h3=+); A2) 6...Bd6 7.a3=+; B) 6.h3 Be6 7.Ngf3=+) 6.Ngf3 (6.h3 Bh5 (6...Bf5= 7.e4=) 7.Qb3=+; 6.f3 Bh5 7.e4=+) 6...e5 (6...Ngf6 7.e4=+ (7.h3 Bf3 8.Nf3=); 6...a5 7.a3=+) 7.Qb3 (7.d4 e4 8.h3 Bf5–/+; 7.e4=+) 7...Ngf6 8.e3 (8.a3 a5=+) 8...Be7 (8...Bd6 9.Be2–/+) 9.Be2 (9.h3 Bf5=+) 9...0-0 10.a3 (10.h3 Be6 11.0-0 d4–/+) 10...h6 (10...e4 11.de4 Ne4 12.c4=+) 11.c4 (11.h3 Bh5=+) 11...e4 12.de4 de4 13.Nd4 Be2 14.Ne2 Rfe8 (14...c5 15.Bc3=+) 15.0-0 (15.c5 Qa6=) 15...a5 (15...c5 16.Rab1=+) 16.Bc3 (16.c5 Qc7=) 16...Qc7 17.c5 Bf8 (17...Ne5!?=) 18.Ng3+= Ng4 (18...ab4 19.ab4 Ra1 20.Ra1+=) 19.Bd4 (19.Nde4?! Re4 20.f3 ab4 21.ab4 Ra1 22.Ra1 Re3 23.fg4 Qe5=+) 19...h5 (19...Ngf6 20.h3+/–) 20.h3 (20.Nde4? Re4 21.f3 Rd4 22.fg4 Nc5 23.bc5 Rg4–+) 20...h4 21.hg4 hg3 22.fg3 (better is 22.g5 ab4 23.ab4 Ra1 24.Ba1+/– (24.Ra1?! gf2 25.Kf2 Ne5=)) 22...Re6?? (better is 22...Nf6!?+=) 23.Rf4 (better is 23.Ne4 Nf6 24.Ng5+- (24.Nf6?! gf6 25.g5 fg5+-; 24.Bf6?! Re4 25.Bd4 ab4+/–)) 23...ab4 24.ab4 Ra1 25.Ba1 Nf6 26.Bf6 gf6 27.Kf2 Qd8 28.Qc2+- Qd5 29.Re4 Qd2?? 30.Qd2 Re4 31.Kf3 Re5 32.Qd7 Re7 33.Qf5 Re6 34.g5 Be7 35.g6 Bf8 36.Qh5 fg6 37.Qg6 Bg7 38.e4 Re5 39.Qg4 Re7 40.Qc8 Kf7 ½–½. Agrest,Roman (2160) – Marklund,Gunnar (2100), SWE–ch Seniors, 2007.

4.Nf3 A) 4...Nd7 5.e4 (5.a3 Ngf6 6.c4 a5 7.c5=+; 5.Nbd2 Ngf6 6.c4 e6 7.Qb3=+; 5.c4 e5 6.a3 d4 7.e3=; 5.Bc3 Ngf6 6.Nbd2 e6 7.h3=+; 5.Qd2 Ngf6 6.c4 e6 7.a3=+) 5...e5 6.a3 Bd6 7.Be2=; B) 4...e6 5.Ne5 (5.a3 Bf3 6.ef3 Nf6 7.Be2=+; 5.Nbd2 Bf3 6.ef3 Nf6 7.a3=+; 5.Qd2 Nd7 6.a3 Ngf6 7.e3=+; 5.Nfd2 Nf6 6.a3 c5 7.f3=+; 5.c3 Bd6 6.e4 Nf6 7.h3=+) 5...Bh5 6.a3 a5 7.g4=+; C) 4...f6 5.c3 (5.e3 e5 6.c3 Bd6 7.Be2=+; 5.a3 e5 6.e3 a5 7.c3=+; 5.Nbd2 e5 6.c3 a5 7.ba5=+; 5.h3 Bf3 6.ef3 e5 7.a3=+; 5.d4 e6 6.c3 Nd7 7.Nbd2=+) 5...e5 6.e3 Bd6 7.Be2=+; D) 4...Nf6 5.Ne5 (5.Nbd2 e6 6.a3 a5 7.ba5=+; 5.a3 Nbd7 6.c4 a5 7.c5=+; 5.e3 Nbd7 6.a3 a5 7.Be2=+) 5...Bf5 6.e3 e6 7.a3=; E) 4...Bf3 5.gf3 (5.ef3 e6 6.Nd2 Nf6 7.a3=+) 5...Nf6 6.a3 e6 7.Rg1=+.

4.h3 A) 4...Bd7= 5.e4 (5.a3 Nf6 6.Nf3 e6 7.e3=; 5.Nf3 f6 6.a3 a5 7.ba5=; 5.e3 Nf6 6.c4 e6 7.Qb3=; 5.Nd2 f6 6.e4 e5 7.c3=; 5.Qd2 Nf6 6.Nf3 e6 7.e3=) 5...Qb6 6.a3 e6 7.Nd2=; B) 4...Bf5 5.Nf3 (5.Nd2 Nf6 6.Ngf3 e6 7.a3=; 5.a3 a5 6.Nd2 Nf6 7.Ngf3=; 5.g4 Bg6 6.Nf3 f6 7.a3=; 5.e3 e6 6.Nd2 Nf6 7.g4=; 5.Qd2 e6 6.Nf3 Qb6 7.Bc3=) 5...e6 6.a3 a5 7.Nbd2=; C) 4...Bc8 5.Nd2 (5.a3 Nf6 6.Nf3 e6 7.c4=+; 5.e4 de4 6.de4 Qd1 7.Kd1 Nf6=) 5...Nd7 6.Ngf3 Ngf6 7.a3=; D) 4...Be6 5.Nd2 (5.e3 Bf5 6.Nf3 e6 7.a3=; 5.a3 a5 6.Nf3 ab4 7.ab4=; 5.Nf3 Nf6 6.a3 a5 7.e3=) 5...Nf6 6.Ngf3 a5 7.ba5=; E) 4...Bh5 5.Nf3 (5.a3 a5 6.Nd2 Na6 7.ba5=+; 5.g4 Bg6 6.Nf3 f6 7.a3=; 5.Nd2 e6 6.c4 Nf6 7.a3=+; 5.Qd2 e6 6.e3 Nf6 7.Be2=; 5.g3 Nd7 6.Bg2 e5 7.a3=+) 5...f6 6.a3 e5 7.e3=.

4.Nc3 d4 5.Nb5 e5 6.Qd2 a6 7.Na3 Ngf6 8.f3 Bh5 (better is 8...Be6–/+) 9.g4?? (9.c3 a5–/+) 9...Bg6 (better is 9...Nd5 10.gh5 Qh4 11.Kd1 Bb4 12.c3 dc3 13.Qc1–+) 10.e3? (better is 10.c3 a5 11.Nc2–/+) 10...de3–+ 11.Qe3 Bb4 12.c3 Bd6 13.Nc4 0-0 14.Nd6 cd6 15.Ba3 Nd5 16.Qd2 Nc5 17.c4 Nf4 18.Bc5 dc5 19.Rd1 Qc7 (20.Nh3 Rfe8–+; 19...Qe7 20.Qe3–+) 0–1. fordey – willow27, ChessWorld.net, 2005.

4.c4 e5 5.Qa4 d4 6.e3 de3 7.fe3 –/+.

4.f3 Bh5 5.e4 (5.a3 e5 6.e4 Ngf6 7.Ne2=+; 5.c3 e5 6.Qb3 Nb6 7.Nd2=+; 5.Nc3 d4 6.Ne4 e5 7.c3–/+; 5.Nh3 e5 6.a3 c5 7.c3=+) 5...e5 6.a3 Ngf6 7.g4 =+.

4.Nf3 A) 4...e6 5.a3 (5.Nbd2 Bf3 6.ef3 Ngf6 7.b5=+; 5.c3 Ngf6 6.e3 e5 7.h3=+; 5.Bc3 Ngf6 6.e3 Bd6 7.Be2=+; 5.Qd2 Ngf6 6.e3 Bf3 7.gf3=+; 5.b5 Ngf6 6.e3 a6 7.ba6=+) 5...Ngf6 6.e3 c5 7.bc5=+; B) 4...Ngf6 5.a3 (5.Nbd2 e6 6.a3 a5 7.b5=+; 5.c4 e5 6.a3 d4 7.e3=+; 5.Qd2 e6 6.a3 a5 7.e3=+; 5.Bc3 Bf3 6.ef3 e5 7.d4=+; 5.b5 e6 6.e3 a6 7.ba6=+) 5...a5 6.b5 e6 7.e3=+; C) 4...a5 5.b5 (5.ba5 Ngf6 6.Qd2 e6 7.e3=+; 5.Qd2 ab4 6.Qb4 Bf3 7.ef3=+; 5.a3 e5 6.b5 Bd6 7.e4=+; 5.Nc3 Ngf6 6.b5 Bf3 7.ef3=+) 5...Ngf6 6.Nbd2 e6 7.e4=; D) 4...f6 5.a3 e5 6.e4 a5 7.b5=; E) 4...Bf3 5.ef3 (5.gf3 e5 6.a3 c5 7.c3=+) 5...e6 6.a3 Ngf6 7.c4=+.

4.h3 A) 4...Bh5 5.a3 (5.c4 e5 6.a3 dc4 7.dc4=+; 5.g4 Bg6 6.Bg2 e5 7.a3=; 5.Qd2 e5 6.g4 Bg6 7.Bg2=+; 5.Nd2 e5 6.g4 Bg6 7.a3=+; 5.Nf3 Bf3 6.ef3 Ngf6 7.a3=+) 5...e5 6.g4 Bg6 7.Bg2=; B) 4...Bf5 5.Nd2 (5.g4 Bg6 6.Nf3 e5 7.a3=+; 5.Nf3 e5 6.a3 a5 7.b5=+; 5.a3 e5 6.Nf3 a5 7.Ne5=+; 5.Nc3 d4 6.Ne4 e5 7.c3=+; 5.c4 dc4 6.dc4 e5 7.a3=+) 5...Ngf6 6.g4 Bg6 7.Bg2=+.

5.c4 d4 6.h3 Be6 7.Nf3=+.

5.Nd2 Ngf6 6.c4 a5 7.b5=+.

5.Nd2 Ngf6 6.Ndf3 Bd6 7.g3 (7.c4 c5 8.cd5 cb4=+) 7...0-0 8.Bg2 c6 9.Bh3 (9.c4 d4-/+) 9...Bh3 10.Nh3 a5 11.c3 Re8 Black plans e4 12.0-0 Nf8 13.c4 dc4 14.dc4 Qd7 (14...e4 15.Nh4-/+) 15.Kg2 e4 16.Nd4 (16.Nh4!?=+) 16...ab4-/+ 17.a4? (better 17.ab4 Ra1 18.Qa1 Bb4 19.Rb1-/+) 17...Be5-+ 18.Rb1 (18.c5 b6! 19.cb6 c5-+) 18...Red8 19.Nc6 (19.Qb3 Bd4 20.Rfd1 Ne6-+) 19...Qc6 (worse 19...bc6 20.Be5 Qe6 21.Qc2 Qe5 22.Rb4-+) 20.Qb3 Bb2 21.Rb2 Ra4 22.f3 (22.Nf4 Rd4-+) 22...ef3 23.ef3 Ne6 24.Ng1 (24.Nf2 Nd4 25.Rd1 Ra3 26.Qb4 Rf3-+) 24...Nc5 (24...Ng4 25.Re2 Ra3 26.Qb4 Ne3 27.Kf2-+) 25.Qc2 (25.Qe3 Ra3 26.Qg5 Nd3-+) 25...b3 26.Qe2 Ng4 27.h3 (27.Re1 Raa8 28.h3 Nd3-+) 27...Re8 28.Qd2 (28.hg4 Re2 29.Ne2-+) 28...Ne3 29.Kf2 Nf1 (29...Qf6 30.Qe3 Qb2 31.Ne2 Re3 32.Re1 Ra2 33.Ke3 Qd2 34.Kf2 Nd3 35.Kg2 Ne1 36.Kh1 Qe2 37.Kg1 Qg2) 30.Kf1 Rc4 31.Rb1 Na4 (31...Na4 32.Rb3 Rc2 33.Qc2 Qc2-+; better 31...Rc2 32.Rb2 Qb5 33.Kg2 Rd2 34.Rd2-+) 0-1. petrobbo (1975) - devilmaycare (2400), ChessWorld.net, 2013.

5.d4 e4 6.c4 Ngf6 7.Nd2=+.

5.Nf3 a5 6.b5 Bd6 7.e4 =+.

5.g3 c5 6.Qd2 Ngf6 7.Bg2–/+.

5.h3 Be6 6.Nf3 a5 7.b5=+.

5.Qb3 dc4 6.Qc4 e5 7.Qb5 =+.

5.Qb3 e6 6.e3 (--> 3.c4 e6 4.Qb3 Nf6 5.e3 Nbd7 6.d3).

5.h3 Be6 =.

5.a3 a5 6.b5 (6.h3 Be6 7.Ngf3 Bd6 8.b5 Ngf6 9.e4 0-0 10.Ng5 Nc5 11.Ne6 Ne6 12.c4 de4=+) 6...Ngf6 7.Ngf3 (7.h3 Be6 8.Ngf3 Bd6 9.e4 0-0 10.Ng5 Nc5 11.Ne6 Ne6 12.c4 de4=+) 7...Bd6 8.g3 (8.e4 0-0=+ 9.ed5 Nd5 10.Be2 Re8 11.Ne4 Nc5 12.h3 Bf3=+) 8...c6 (8...0-0 9.h3 Bf3 10.Nf3 c6 11.bc6 bc6 12.Bg2 Rb8=+) 9.bc6 (9.d4 e4 10.Ne5 e3 11.fe3 Qc7 12.bc6 bc6=+) 9...bc6 10.Bg2 (10.c4 Rb8 11.Rb1 Bf3 12.Nf3 Qe7–/+) 10...Rb8 11.Qc1 (11.Rb1 Qe7 12.Qc1 0-0–/+) 11...0-0 12.0-0 (12.c4 Rb7–/+) 12...Qc7 (12...Qe7–/+) 13.e3 (13.Rb1 Rb7=+) 13...Nb6 14.c4 Na4 15.Bc3 Rfe8 (15...e4 16.de4 Bf3 17.Nf3 de4 18.Nd4–/+) 16.d4=+ e4 17.Ne1? (better is 17.c5!? Bc5 18.dc5 ef3 19.Nf3 Nc3 20.Qc3=+) 17...Be2–+ 18.c5 Bf8 (18...Bf1 19.cd6 Qd6 20.Bf1 Nc3 21.Qc3+=) 19.f3 (19.Qc2 Nc3 20.Qc3 Bf1 21.Bf1 Be7–+) 19...Bf1 20.Bf1 ef3 21.Ndf3 Nc3 22.Qc3 Qe7 23.Nc2 a4 24.Re1 (24.Nd2 Qe6–+) 24...Rb3 (25.Qd2 Qe6–+) 0–1. Zaichenko,Andrey – Trokenheim,Marek (1800), FICGS, 2008.

5.a3 Ngf6 6.c4 c6 (6...Bd6 7.cd5 Nd5 8.Ngf3–/+) 7.Qc2 (7.cd5 cd5 8.d4 Bd6=+) 7...a5–/+ 8.c5 ab4 9.ab4 Ra1 10.Ba1 b6 11.Ngf3 Qa8 (11...d4 12.e3 bc5 13.h3 Bf3 14.Nf3–+) 12.Bb2=+ (12.Be5? Ne5 13.Ne5 Qa1 14.Qd1 Qe5–+) 12...Bf3 (12...d4 13.cb6 Bb4 14.Qb3–+) 13.Nf3 d4 (13...bc5 14.bc5 d4 15.e3 de3 16.fe3 Qa5 17.Qd2 Qc5 18.Be2=+) 14.e3 (14.cb6 Bb4 (14...Nb6?! 15.Ne5 Bb4 16.Kd1=) 15.Nd2 Nb6–/+) 14...bc5 15.bc5 Bc5 (15...Qa5 16.Qd2 Qd2 17.Kd2 de3 18.fe3= (< 18.Ke3 Bc5 19.d4 ed4 20.Nd4 Ne5–/+)) 16.ed4= ed4 17.Nd4 (17.Qe2 Kd8 18.Nd4 Re8–+) 17...0-0 18.Nf3 (18.Be2 Bb4 19.Kd1 Ne5=) 18...Bb4 (18...Re8 19.Be2=+) 19.Nd2 (19.Kd1 Re8=+) 19...Rb8 (19...Re8 20.Be2=+) 20.Bd4 (20.Be2!?=+) 20...c5–/+ 21.Bf6 Nf6 (21...gf6?! 22.f4=) 22.Be2? (better is 22.f4–/+) 22...Qg2–+ 23.Rf1 Nd5 (24.h3 Qh3–+) 0–1. Amor Alcaide,Manuel – Magem Badals,Jordi (2560), Berga op, 1995.

5.a3 Ngf6 6.f3 Bh5 (6...Be6 7.c4–/+) 7.g3 (7.Nh3 a5–/+) 7...c5 8.c3 Bd6 9.Bg2 0-0 10.Nh3 Qc7 (10...Bg6 11.Nf2–/+) 11.0-0 (11.g4 Bg6–/+) 11...Bg6 (11...Qb6 12.Rf2–/+) 12.Rc1 (12.Nf2 b5–/+) 12...b5 (12...Qb6 13.Nf2–/+) 13.Nf2 (13.f4 Qb6 14.Kh1 cb4 15.ab4 Rac8+=) 13...c4 (13...a5 14.d4 ab4 15.dc5 Qc5 16.cb4–/+) 14.e4 (14.dc4 bc4 15.e4 Nb6–/+) 14...Nb6 (14...cd3 15.Nd3 Qb6 16.Rf2–/+) 15.dc4 (15.d4 Na4 16.Ba1 Bh5+=) 15...bc4 (15...dc4 16.Qe2–/+) 16.Qe2 (16.Ng4 Ng4 17.fg4 Rad8–/+) 16...Rad8 (16...a5–/+) 17.Rcd1 (17.Rfd1 Be7+=) 17...Rfe8 (17...d4 18.Ng4–+) 18.Rfe1 (18.Rc1–/+) 18...Bf8 (better is 18...d4–+) 19.Nf1+= Na4 20.Ba1 Nb6 21.Ne3 (21.Bb2 de4 22.fe4 Bh5=) 21...Re6 (21...Qc6 22.Rd2=) 22.Rd2 (22.a4 de4 23.Rd8 Qd8 24.fe4 Na4 25.Nc4 Qc7=) 22...Red6 23.Red1 de4 24.fe4 Rd2 25.Rd2 Rd2 26.Qd2 Ne8 27.Qe2 Nd6 28.Bb2 f6 29.Bc1 Nb5 30.Qe1 Bf7 31.Ned1 Qc8 32.Qe3 Qa6–/+ 33.Qd2 Qc8 34.Qa2 Na4 35.Qc2 Qa6 36.Ng4 Nb6 37.Qb2 Qa4–/+ 38.Nge3 a5 39.Bf1 Nd6 40.Nf2 Qb5 41.Qc2 Qa6 42.Nfd1 Be8 43.Nb2 Bc6 44.Bg2 Qa8–/+ 45.Qf2 ab4 46.ab4 Be4 47.Be4 Qe4 48.Nf1 Nd5 49.Qd2 Nb5 50.Nd1 Nb6 51.Nf2 Qc6–+ 52.Ne3 Nd6 53.Ba3 Qa8–+ 54.Bc1 Be7 55.Nfg4 Ne4 56.Qc2 Ng5 57.Qg2? Qg2–+ 58.Kg2 Ne4 59.Nd1 Na4 60.Nge3 Nec3 61.Nc3 Nc3 62.Nc4 Bb4 63.Kf3 Kf7 64.Bd2 Nd5 65.Bb4 Nb4 66.Ke4 Ke6 0–1. Rudol,Matylda – Murawko,Katarzyna, DMP – I liga juniorow Poland (year?).

5.Ngf3 Bf3–/+ 6.Nf3 Bb4 7.c3 Bd6 8.e3 Qe7 (8...Ngf6 9.Be2–/+) 9.Be2 Ngf6 10.0-0 e4 11.de4 (11.Nd2 ed3 12.Bd3 Nc5–/+) 11...de4 (< 11...Qe4 12.Rc1=+) 12.Nd4 Qe5 13.Rb1?? (better is 13.g3–/+) 13…Qh2 0–1. Bull_Dog_Baz – marekt, ChessWorld.net, 2007.

5.g3 Bb4–+ 6.Bg2 Ngf6 7.c3 (7.Ngf3 Qe7–/+) 7...Bc5 (7...Bd6 8.c4 c6 9.Ngf3–+) 8.h3 Bf5 (8...Be6 9.Ngf3–+) 9.g4 (9.c4 c6 10.Qb3 dc4 11.Nc4 Be6–+) 9...Be6–+ 10.e4 (10.Qb3 Bd6–+) 10...c6 (10...de4 11.Ne4 c6 12.Bc1–+) 11.g5 (11.Nb3 0-0–+) 11...Ng8 12.Ngf3 (12.ed5 cd5 13.Ngf3 Qb6–+) 12...Qb6 13.0-0? (13.Qc2 Bf2 14.Kd1–+) 13…Qb2 (14.d4 Bd6–+) 0–1. b4_player – opponent, gamecolony.com, 2007.

5.h3 Be6 6.a3 Nh6 (6...a5 7.Ngf3 Bd6 8.e4=+) 7.c4 (7.Ngf3 f6=+) 7...a5 (7...d4 8.Ngf3=+) 8.Qb3 (8.cd5 Bd5 9.b5 Bd6=) 8...d4=+ 9.b5 Nc5 (9...Be7 10.Ngf3=+) 10.Qc2 Bd6 11.g3 (11.Ngf3 0-0=+) 11...0-0 (11...Rb8 12.Bg2=+) 12.Bg2 f5 (12...Rc8 13.Nb3 Nb3 14.Qb3=+) 13.a4 (13.Ngf3 Qf6=+) 13...Qe7 (13...Qf6 14.Ngf3=+) 14.Nb3 (14.Ngf3 Qf6=+) 14...Nb3 15.Qb3 c6 (15...Rab8 16.Nf3=+) 16.bc6= bc6 17.Bc6 Rac8 18.Bb5 Nf7 (18...Bb4 19.Kf1=+) 19.Nf3= Ng5 20.Ng5 Bb4 21.Kd1 Qg5 22.Bc1 f4 23.gf4? (better is 23.Ra2=+) 23...Qg2–+ (23...ef4?! 24.Bd2 Bd2 25.Kd2 f3 26.e3–+) 24.Re1 Be1 25.Ke1 ef4 (better is 25...Qg1 26.Kd2–+) 26.Bb2? (26.f3–+) 26...Qg1 27.Kd2 Qf2 28.Rc1 (28.Kc1–+) 28...f3 29.Qd1 Qe3 30.Kc2 f2 31.Qf1 (31.Qd2 Bh3 32.Qe3 de3–+) 31...Rcd8 32.Kb1 (32.Kb3–+) 32...Bh3 33.Qh1 f1Q (34.Rf1 Rf1 35.Qf1 Bf1–+) 0–1. b4_player – opponent, gamecolony.com, 2007.

5.h3 Bh5 6.a3 Ngf6 7.Ngf3 e4 (7...Bd6=) 8.Ne5 (better is 8.Nh4!?=) 8...e3–/+ 9.fe3 Bd6 10.Ndf3 Ne5 11.Be5 Be5 12.Ne5 Qe7 13.Nf3 0-0-0 (13...Bf3 14.ef3 d4 15.e4+=) 14.g4= Bg6 15.Qd2 Rhe8 16.Bg2 Qe3 (16...h5 17.g5 Nd7 18.Rg1=) 17.Qe3 Re3 18.Kf2 Rde8 19.Rhe1 h6 20.Rac1 R3e7 21.c4 Bh7 22.Nd2 d4 (22...Rd8!?=) 23.Nb3+/– Rd8 24.Nc5 (24.b5 Nd7+/–) 24...b6 (24...c6 25.Bf3=) 25.Nb3+= Kb8 (better is 25...Re5!?+=) 26.c5+/– g5 (26...Nd7!? 27.Nd4 Ne5 28.Nc6 Nc6 29.Bc6 f5+/–) 27.Rc4+- (27.Rc4 Nd7 28.cb6 cb6 29.Nd4+-) 1–0. Andresson,Alejandro – Calens,Diego (2095), Villa Martelli Argentina, Pro–Am Open, 2010.

4.a3 Nc6 5.Nf3 (5.h3 Be6 6.b5 Nd4 7.e3= –0.25; 5.Nd2 Bd6 6.Ngf3 a6 7.e4=+ –0.28; 5.f3 Be6 6.e3 Qg5 7.Qe2–/+ –0.75; 5.b5 Nd4 6.h3 Bd7 7.e3= 0.00) 5...Qf6 6.Nbd2 Bd6 7.c4=.

4.a3 Bd6 5.Nf3 (5.c4 d4 6.Nf3 a5 7.c5=+ –0.31; 5.h3 Be6 6.Nf3 Nd7 7.e4=+ –0.31; 5.Nd2 Nf6 6.Ngf3 Nbd7 7.c4=+ –0.50; 5.Nc3 d4 6.Ne4 Nf6 7.c3=+ –0.56; 5.d4 e4 6.c4 dc4 7.Qc2=+ –0.59) 5...Nd7 6.e4 d4 7.Be2=.

4.a3 Nd7 5.Nf3 (5.c4 d4 6.Nd2 Ngf6 7.h3=+ –0.56; 5.d4 e4 6.c4 Ngf6 7.cd5=+ –0.62; 5.h3 Be6 6.Nf3 a5 7.b5=+ –0.50; 5.Nd2 Ngf6 6.Ngf3 Bd6 7.c4=+ –0.50; 5.g3 c5 6.Qd2 Ngf6 7.Bg2–/+ –0.72) 5...a5 6.ba5 Qf6 7.e4=+.

4.a3 Qf6 5.Nd2 (5.d4 Bd6 6.Nf3 e4 7.Ne5=+ –0.44; 5.Nf3 Nd7 6.d4 e4 7.Ne5=+ –0.41; 5.c4 dc4 6.dc4 Nd7 7.Qa4=+ –0.31; 5.h3 Be6 6.e3 Nd7 7.Ne2=+ –0.41; 5.Nc3 d4 6.Ne4 Qb6 7.c3=+ –0.34) 5...c5 6.c4 d4 7.Qa4=.

4.Nd2 A) 4...Nc6 5.h3 (5.a3 Bd6 6.Ngf3 a6 7.e4=+ –0.28; 5.b5 Nd4 6.h3 Bh5 7.g4= –0.25; 5.c3 Nf6 6.h3 Bf5 7.b5=+ –0.50) 5...Be6 6.b5 Nd4 7.e3=; B) 4...Bb4 5.Be5 (5.h3 Be6 6.Be5 f6 7.Bf4=+ –0.44; 5.f3 Be6 6.Be5 f6 7.Bf4–/+ –0.84) 5...f6 6.Bf4 d4 7.h3=+; C) 4...Bd6 5.a3 (5.h3 Be6 6.Ngf3 Nd7 7.e4=+ –0.56; 5.c4 dc4 6.dc4 Bb4 7.Be5=+ –0.59; 5.Ngf3 Nd7 6.a3 a5 7.ba5=+ –0.66; 5.b5 Nf6 6.Ngf3 Nbd7 7.e4=+ –0.56; 5.g3 Nc6 6.a3 a5 7.b5=+ –0.41) 5...Nf6 6.c4 d4 7.c5=+; D) 4...f6 5.a3 (5.c3 Bd6 6.Ngf3 Ne7 7.e4=+ –0.44; 5.h3 Be6 6.c3 a5 7.b5=+ –0.53; 5.b5 Bd6 6.Ngf3 Ne7 7.e4=+ –0.47; 5.f3 Be6 6.c3 Bd6 7.e4–/+ –0.72) 5...c5 6.c3 Nd7 7.Ngf3=; E) 4...Nd7 5.a3 (5.d4 e4 6.a3 Bd6 7.g3–/+ –0.78; 5.h3 Be6 6.a3 Ngf6 7.Ngf3=+ –0.50; 5.b5 Ngf6 6.h3 Bf5 7.g4=+ –0.53; 5.c3 Ngf6 6.h3 Bf5 7.Ngf3=+ –0.59) 5...Ngf6 6.Ngf3 Bd6 7.c4=+.

4.h3 A) 4...Bf5 5.Nd2 (5.Be5 Nc6 6.Bf4 Bb4 7.c3=+ –0.44; 5.g4 Be6 6.Be5 Nc6 7.Bc3=+ –0.44; 5.a3 Nd7 6.Nf3 a5 7.b5=+ –0.41; 5.e4 de4 6.de4 Be4 7.Nd2=+ –0.66; 5.b5 Nd7 6.Nf3 Bd6 7.Nbd2=+ –0.66) 5...Nd7 6.e4 Be6 7.ed5=+; B) 4...Bd7 5.Be5 (5.a3 a5 6.Nf3 e4 7.de4=+ –0.28; 5.Nd2 f6 6.c3 Be6 7.e4= –0.25; 5.Qd2 Bd6 6.c4 d4 7.Nf3=+ –0.28; 5.b5 Bb4 6.c3 Bd6 7.c4=+ –0.53) 5...Nc6 6.Bc3 Nb4 7.a3=; C) 4...Bh5 5.g4 (5.a3 a5 6.g4 Bg6 7.b5=+ –0.28; 5.Be5 Nc6 6.Bg3 Bb4 7.c3=+ –0.44; 5.Nd2 Bb4 6.Be5 f6 7.c3=+ –0.34; 5.c3 Bd6 6.g4 Bg6 7.Bg2=+ –0.50; 5.Qd2 Bd6 6.c4 c6 7.c5=+ –0.34) 5...Bg6 6.a3 a5 7.b5=+; D) 4...Bc8 5.Be5 (5.a3 Nd7 6.Nf3 a5 7.b5= –0.25; 5.Nd2 Nd7 6.a3 Ngf6 7.Ngf3=+ –0.34; 5.Qd2 Nd7 6.Nf3 Qe7 7.a3= –0.22) 5...Nc6 6.Bc3 Bb4 7.Bb4=; E5) 4...Be6 5.Be5 (5.a3 Nd7 6.Nf3 a5 7.b5=+ –0.47) 5...Nc6 6.Bc3 Bb4 7.Bb4=+.

5.ba5 Nc6 6.Nf3 Bd6 7.e4=+.

5.b5 Bd6 6.Nf3 Bf3 7.ef3=+.

5.b5 Nd7 6.Nd2 Bd6 7.c4 c6 (7...Ngf6 8.cd5 Nd5 9.Ne4=+) 8.a4 (8.bc6 bc6 9.Qa4 Qb6=) 8...Ne7 9.Ngf3 0-0 10.h3 (10.e4 d4=+) 10...Bf3-/+ 11.Nf3 Bb4 12.Nd2 dc4 13.dc4 cb5 14.e3 (14.ab5 Nc5 15.Ra2-+) 14...Nc5-+ 15.Be2? (15.Bc1-+) 15...bc4 (15...Na4?! 16.Be5 Nc5 17.Qc2 Bd2 18.Qd2 Qd2 19.Kd2 Nb3 20.Kc2 Na1 21.Ba1-+) 16.Be5 (16.Qc2 Nb3 17.Rd1 Bd2 18.Rd2 Nd2 19.Qd2 Qd2 20.Kd2 Rfd8 21.Kc2 e4-+) 16...c3 17.0-0 Qd2 18.Qd2 (18.Bb5 Qd1 19.Rfd1 Rfd8 20.Rd8 Rd8-+) 18...cd2 19.Bd6 Ne4 20.Be5 (20.Be7 Be7 21.Bf3 Nc3-+) 20...Bc3 21.Bc3 Nc3 22.Bd1 Rfd8 23.f3 (23.g3 Ned5 24.Bg4 Nb6-+) 23...Ned5 24.Kf2 (24.Ra3 Rac8 25.Kf2 Nb4 26.Rc3 Rc3-+) 24...Nd1 25.Rfd1 Nc3 26.Rf1 (26.h4 Rac8-+) 26…d1Q (26...d1Q 27.Rfd1 Rd1-+) 0-1. petrobbo (2055) - Yorkie (2540), ChessWorld.net, 2017.

5.Nd2 Nd7 6.b5 Bd6 7.c4=+.

5.d4 e4 6.b5 Nf6 7.h3–/+.

5.Be5 Nd7 6.Bb2 ab4 7.h3=+.

5.h3 Be6 6.b5 Bd6 7.Nf3=+.

5.Bb2 Bb4 6.c3 Bd6 7.Qb3 =+.

5.Bc3 Bb4 6.Bb4 Nb4 7.c3 =+.

5.Bc3 Nb4 6.Qd2 c5 7.e3 =.

5.Bc3 d4 6.Bd2 (6.b5!? Ne5 7.Bb2=) 6...Bb4=+ 7.c3 dc3 8.Nc3 Nf6 9.Qb3 (9.Rb1 Rb8=+) 9...Be6 (9...Nd4 10.Qa4 Bd7 11.Qd1–/+) 10.Qc2 (10.Qb2 Rb8–/+) 10...0-0 11.e3 Ne5 (11...Re8 12.Nf3=+) 12.d4 Nc4 13.Bc4 (13...Bc4 14.Ne4 Bd2 15.Nd2=). bentengutama – mirage (2180), net–chess.com, 2003.

5.Bg3 Bb4 6.c3 Qf6 7.Qc2 =+.

4.Nd2 Nd7 5.Ngf3 Bf3 6.ef3 Ngf6 7.a3 (7.Rb1 Bd6=+) 7...a5 (7...c5 8.c3=+) 8.b5 g6 9.Be2 Bg7 10.0-0 0-0 11.f4 a4 (11...Nh5 12.Bg7 Ng7 13.Nf3=) 12.Nf3 Nh5 13.Bg7 Ng7 14.Nd4? (better 14.d4!?=) 14...Qf6–/+ 15.c3 (15.Nf3 Qf4 16.d4 Qd6–/+) 15...Qf4 16.g3 (16.Re1 Qd6–+) 16...Qf6 (16...Qd6 17.Bf3–+) 17.Bf3 (17.Bg4 Nc5–/+) 17...Nf5 (17...Nc5 18.Bg2–+) 18.Ne2 (18.Nf5!? Qf5 19.Re1–/+) 18...Nd6 (18...Ra5 19.Kg2–+) 19.Bg2 Nc5 20.Rb1 (20.c4 dc4 21.dc4 Nb3–+) 20...Nb3 21.Nd4 Nd4 22.cd4 Qd4 23.Rb4 Qc3 0–1. Steiner,Peter Markus (1695) – Scherf,Robert (1905), 9th Rheinland–Pfalz–Open, 2017.

5.b5!? =+.

5.c3 Nf6 6.Nd2 Bd6 7.Ngf3 0-0 8.e3 Nbd7 9.h3 Bh5 10.Be2 e5 11.0-0 Qe7 12.e4 Nb6 13.c4 (13.b5 a4=+) 13...ab4–/+ 14.ab4 de4 15.de4 Bb4 16.Be5 Rad8 17.Bf6 Qf6 18.Ra2? (better is 18.g4 Bd2 19.Nd2–+) 18...Bf3 19.Bf3 Nc4! 20.Qb3 (20.Nc4 Rd4) 20...Nd2 (20...Rd2?! 21.Qc4 b5 22.Qb3 Ra2 23.Qa2–+; 20...Bd2?! 21.Qc4 Bf4 22.Rb1–/+) 21.Qb4 Nf1 22.Kf1 Ra8 23.Ra8 Ra8 24.Qb7 (24.Qd2–+) 24...Qa1 25.Ke2 Ra2 26.Ke3 (26.Kd3 Qf1 27.Kd4 Qf2 28.Ke5 Ra5 29.Qd5–+) 26...Qc1 27.Kd3 (27.Kd4 Qd2 28.Kc4 Rc2 29.Kb5 Qd3 30.Ka4 Qc4 31.Ka3 Ra2) 27...Rd2 (28.Ke3 Rd1 29.Ke2 Qd2#) 0–1. Bull_Dog_Baz – michaelbuss, ChessWorld.net, 2007.

5.c4 ab4–/+ 6.ab4 (6.Qb3 Nc6–/+) 6...Bb4 (6...Ra1 7.Ba1 Bb4 8.Nd2–/+) 7.Nd2 Ra1 8.Ba1 (8.Qa1 f6–/+) 8...Nf6 9.Qa4 (9.f3 Bf5–/+) 9...Nc6–+ 10.Ngf3 (10.f3 Bf5 11.Bf6 Bd2 12.Kd2 Qf6–+ (12...gf6?! 13.cd5 ed5 14.Qb5=+)) 10...Bf3 11.gf3 (11.ef3 dc4 12.Qc2 0-0–+) 11...dc4 12.dc4 (12.Kd1 cd3 13.e3–+) 12...Qd2# 0–1. b4_player – opponent, gamecolony.com, 2007.

5.Nd2 c5 6.bc5 (better 6.h3!? Bf5 7.g4=+) 6...Bc5–/+ 7.Ngf3 (better 7.Rb1!?–/+) 7...Qb6–+ 8.d4 Qb2 9.dc5 Nbd7 0–1. Francoisdel – michaelbuss (2865), ChessWorld.net, 2017.

5.Nd2 Nbd7 6.Ngf3 (6.f3 Bh5=+) 6...c5 7.b5 (7.bc5 Bc5 8.e3 0-0=+) 7...Qc7 (7...Bd6 8.c4=+) 8.e3 e5 (8...Bd6 9.Be2=+) 9.Be2 (9.h3 Bf5=) 9...e4 (9...Bd6!?=+) 10.de4+= de4 11.Ng5 Bf5 12.Bc4 Bg6 13.h4 (13.0-0 Bd6 14.f4 ef3 15.Ngf3 Ne5=) 13...Ne5 (13...h6 14.Nh3=+) 14.Bb3 (14.h5 Nc4 15.Bf6 gf6 16.Nc4 fg5 17.hg6 fg6+=) 14...h6=+ 15.Nh3 0-0-0 (15...Bh5!? 16.Qc1 Bd6=+) 16.Nf4= Bd6 17.Qe2 (17.Ng6!? fg6 18.Qe2=) 17...Bf5=+ 18.0-0-0 Bg4 19.f3 ef3 20.gf3 Nf3 (20...c4 21.b6 ab6 22.Bc4 Bf3 23.Nf3 Nc4 24.Bf6 Ba3 25.Kb1=) 21.Bf6 gf6 22.Nd5 Ne5 23.Qf2? (better is 23.Qg4! Ng4 24.Nc7 Kc7 25.Rdf1=+) 23...Qa5–+ 24.Rdg1 Qa3 25.Kb1 f5 26.Nf6 (26.b6 a6–+) 26...c4 (26...Qb4 27.Ng4 fg4 28.Qf5 Kb8 29.Ne4–+) 27.Nc4?? (27.Bc4 Bb4 28.Rg4–+) 27…Nc4 (28.Bc4 Be5–+) 0–1. Schmidbauer,Josef (1635) – Dzidic,Alen, RLSO_Freis'g–Freyung, 2003.

5.f3 Bh5=+.

5.a3 c5 6.bc5 Bc5 7.Qc1 Nc6 8.Ngf3 Rc8 9.e3 Bd6 10.Be2 e5 11.Qd1 0-0 12.Nh4 Be6 13.0-0 d4 14.e4 g6 (14...Qb6 15.Rb1-/+) 15.g3 (15.c4 Nd7 16.Nhf3 Nc5=+) 15...Nd7 16.Bg4 Nc5 17.Be6 Ne6 18.Nc4 Be7 19.Ng2 b5 20.Nd2 Nc5 21.Bc1 Na4 22.Nb3 Nc3 23.Qe1 a5 24.Bh6 Re8 25.f4 a4 26.Nd2 Bf8 (26...ef4!? 27.Nf4 Ne5-+) 27.Bf8=+ Rf8 28.Nf3 (28.Nb1 f6=+) 28...f6 29.Qd2 Qe7 30.fe5 fe5 31.Qh6 b4 32.ab4 Nb4 33.Qd2 Nca2 34.Nfe1? (34.Nge1 Ra8-/+) 34...Rf1-+ 35.Kf1 Rf8 36.Kg1 Qf7 (36...Qf6 37.h4-+) 37.h4 Nc3 (37...Qf1 38.Kh2 Qf2 39.Qg5-/+) 38.Kh2 Nc6 (38...Qf2!? 39.Qf2 Rf2 40.g4-+) 39.Qg5 Qf6 40.Qg4 h5 41.Qd7 Rf7 42.Qc8 Kg7 43.Qa8 (43.g4 Ne2 44.Rb1-+ (44.Ra4 Qf2 45.Qh8 Kh8 46.Ra8 Kg7 47.Rg8 Kg8 48.Nf3 Rf3 49.gh5 Qg1)) 43...Ne2 44.c4 Qf2 45.Nc2 (45.Nf3 Qg3 46.Kh1 Rf3 47.Qb7 Kh6 48.Qh7 Kh7 49.Nf4 Qh4 50.Kg2 Rf2) 45...Qg3 46.Kh1 Qh3 0-1. Teichmann,Erik (2240) - Bauer,Ch (2640), Lyon Rapid Final, 2019.

5.a3 Bd6 6.c4 A) 6...Nbd7 A1) 7.Ngf3 0-0 (7...c5 8.bc5 Nc5 9.d4 Nce4 10.c5 Bc7 11.Qa4 Kf8 12.Nb3 Bf5; 7...a5 8.c5 Be7 9.e4 de4 10.de4 ab4 11.ab4 Ra1 12.Qa1 0-0; 7...c6 8.e3 0-0 9.Be2 e5 10.c5 Bc7 11.0-0 b6 12.cb6 ab6; 7...dc4 8.Nc4 Bf3 9.gf3 0-0 10.Bg2 Be7 11.Rg1 Nd5 12.f4 Bf6) 8.c5 Be7 9.e4 c6 10.e5 Ne8 11.d4 Bf5 12.Be2 b6; A2) 7.h3 Bh5 (7...Bf5 8.Ngf3 c5 9.g4 Bg6 10.bc5 Nc5 11.Bg2 0-0 12.Ne5 Rc8) 8.g4 Bg6 9.Bg2 0-0 10.Ngf3 a5 11.c5 Be7 12.h4 h5; B) 6...Nc6 7.b5 Ne7 (7...Nb8 8.h3 Bh5 9.g4 Bg6 10.Bg2 0-0 11.Qb3 Nbd7 12.cd5 Nc5) 8.h3 Bh5 9.g4 Bg6 10.h4 h6 11.cd5 ed5 12.h5 Bh7; C) 6...0-0 C1) 7.Ngf3 a5 (7...c5 8.bc5 Bc5 9.e3 dc4 10.Rc1 Be7 11.Bf6 Bf6 12.Rc4 Bf5; 7...c6 8.e4 Nbd7 9.h3 Bf3 10.Qf3 a5 11.c5 de4 12.de4 Be5) 8.c5 Be7 9.Ne5 Bh5 10.Nb3 ab4 11.ab4 Ra1 12.Qa1 Nbd7; C2) 7.h3 Bh5 8.g4 Bg6 9.h4 h5 10.gh5 Bh5 11.Bg2 Nbd7 12.Ngf3 c6.

5.a3 Bd6 6.f3 Nh5 7.Bd4 e5=+ 8.Bf2 Be6 9.c4 Nf6 10.e4 c6 11.d4 0-0 12.f4 Ne4.

5.a3 Bd6 6.Ngf3 0-0 A) 7.c4 a5 (7...c5 8.bc5 Bc5 9.e3 dc4 10.Rc1 Be7 11.Bf6 Bf6 12.Rc4 Bf5; 7...c6 8.e4 Nbd7 9.h3 Bf3 10.Qf3 a5 11.c5 de4 12.de4 Be5) 8.c5 Be7 9.e3 Na6 10.Qa4 b6 11.d4 Nb8 12.Ne5 Nbd7; B) 7.e4 Nbd7 (7...Nc6 8.b5 Be5 9.bc6 Bb2 10.Rb1 Bc3 11.cb7 Rb8 12.h3 Bf3) 8.Be2 Bf3 9.Bf3 a5 10.b5 c5 11.0-0 Qc7 12.g3 d4.

5.a3 Bd6 6.Ngf3 a5 A) 7.b5 0-0 (7...Bf3 8.Nf3 0-0 9.e3 c6 10.bc6 Nc6 11.Be2 Rc8 12.0-0 e5; 7...Nbd7 8.e4 0-0 9.Be2 Bf3 10.Bf3 c5 11.0-0 Qc7 12.h3 d4; 7...c6 8.e4 Bf4 9.c4 0-0 10.Be2 dc4 11.dc4 Bf3 12.Nf3 Ne4; 7...c5 8.e4 Bf4 9.Be2 0-0 10.Be5 Be5 11.Ne5 Be2 12.Qe2 Nbd7) 8.e4 Nbd7 9.Be2 de4 10.Ne4 Ne4 11.de4 Bf3 12.Bf3 Ne5; B) 7.e4 Nbd7 8.b5=+ 0-0 9.Be2 de4 10.Ne4 Ne4 11.de4 Bf3 12.Bf3 Ne5.

5.a3 Bd6 6.Ngf3 Nbd7 7.e3 (7.c4 0-0 (7...c5 8.bc5 Nc5 9.d4 Nce4 10.c5 Bc7 11.Qa4 Kf8 12.Nb3 Bf5; 7...a5 8.c5 Be7 9.e4 de4 10.de4 ab4 11.ab4 Ra1 12.Qa1 Bf3; 7...c6 8.e3 0-0 9.Be2 c5 10.bc5 Nc5 11.0-0 Rc8 12.Rc1 Qe7; 7...dc4 8.Nc4 Bf3 9.gf3 0-0 10.Bg2 Be7 11.Rg1 Nd5 12.f4 Bf6) 8.c5 Be7 9.e4 c6 10.e5 Ne8 11.d4 Bf5 12.Be2 a5; 7.e4 a5 (7...0-0 8.Be2 Bf3 9.Bf3 c6 10.c4 a5 11.c5 de4 12.Ne4 Be5; 7...Be5 8.Qb1 Bb2 9.Qb2 Nb6 10.e5 Ng8 11.d4 Ne7 12.Be2 Ng6; 7...Qe7 8.Qe2 e5 9.ed5 Nd5 10.h3 Bf5 11.g3 N5b6 12.Ne4 a5; 7...c6 8.Be2 Qc7 9.0-0 de4 10.de4 0-0-0 11.h3 Bf3 12.Nf3 Ne5) 8.b5 0-0 9.Be2 Bf3 10.Bf3 c5 11.0-0 Qc7 12.h3 Ne5) 7...c6 (7...a5 8.b5=+ 0-0 9.Be2 c6 10.bc6 bc6 11.0-0 Rb8 12.Rb1 Rb6; 7...0-0 8.c4 c5 9.bc5 Nc5 10.cd5 Nd5 11.d4 Nd7 12.Rc1 Qa5; 7...e5 8.h3 Bh5 9.c4 c6 10.c5 Bc7 11.Be2 0-0 12.0-0 Re8) 8.Be2 (8.c4 e5= (8...0-0 9.Be2 e5 10.0-0 Qe7 11.h3 Bf5 12.Qc2 Rad8) 9.Be2 0-0 10.c5 Bc7 11.0-0 Qe7 12.h3 Be6) 8...a5=+ 9.c3 (9.Bc3 ab4 10.ab4 Ra1 11.Qa1 0-0 12.h3 Bf3) 9...0-0 (9...e5 10.h3 Be6 11.Ng5 Bf5 12.Ndf3 Nb6) 10.0-0 e5 11.Qc2 (11.c4 b6 12.h3 Bf3) 11...Re8 (11...Qe7 12.h3 Bh5) 12.Rfe1 (12.e4 b5) 12...ab4 (12...b5 13.e4=+; 12...e4=+) 13.cb4 (13.ab4 Qe7=+) 13...Nb6 14.Nb3 Nbd7 15.Na5 (15.Nbd2 Qc7=+) 15...Qb8 16.h3 Bf5 17.Nh4 Be6 18.e4 (18.Nb3 Qa7=+) 18...Bc7 (18...Rc8 19.Nf5 Bf5 20.ef5–/+) 19.Nb3 de4 20.de4 Ne4 21.Bc4 (21.Qe4 Bd5 Double attack (21...Bb3 Deflection; 21...Bd5 Decoy; 21...Bb3 Overloading)) 21...Nef6 (21...Bc4 22.Qc4 Nd6 23.Qg4–/+) 22.Be6 Re6 (22...fe6?! 23.Rad1=) 23.Nf3 h6 (23...Bb6 24.a4–/+) 24.Rad1 Qe8 25.Qf5 Increases the pressure on e5 (25.Re2 Qe7–/+) 25...Nd5 (25...e4 26.Nfd4 g6 27.Ne6 fe6 (27...gf5 28.Nc7 Qc8 29.Na8+-) 28.Rd7 ef5 (worse 28...gf5 29.Rc7 e5 30.Rb7=+; worse 28...Nd7 29.Qe4 e5 30.Nc5+=) 29.Rc7 Qe6–/+) 26.Nbd2 Qe7 27.Ne4? (better 27.Nc4–/+) 27...g6–+ 28.Qg4 f5 29.Qg3 fe4 30.Re4 Kh7 (30...Nf4 31.Nd2–+) 31.Rh4 Rf6 (better 31...Kg7!? 32.Re1–+) 32.Ng5 Kg7 33.Ne4? (better 33.Rh6 Nf8 34.Rh4–+) 33...Rf5 34.Rg4 Qe6 35.Qh4 (35.Bc1 Bd8 36.Qd3 Bb6–+) 35...Raf8 (better 35...h5!? 36.Ng5 Qf6 37.Bc1 hg4 38.Qh7 Kf8 39.hg4 Rg5 40.Bg5–+) 36.Bc1 (36.Qg3 Bd8–+) 36...Nf4 (36...h5 37.Rg5–+) 37.Ng3 R5f7 38.Nh5 Kh7 (38...Nh5?! 39.Qh5 Rh8 40.Be3–+) 39.Ng3 (39.Nf4 ef4 40.f3 Bd8–+) 39...Bd8 40.Rf4 (40.Rg6 Kg6 41.Qg4 Qg4 42.hg4 Nf6–+) 40...ef4 (better 40...Rf4!? 41.Qf4 ef4 42.Ne2 Qe2 43.Rd7 Kg8 44.Bf4–+) 41.Qg4 Qg4 (41...Qg4 42.hg4 fg3–+; 41...fg3? 42.Qe6 Ne5 43.Qe5+-) 0–1. Vukovic,Ljubomir (1960) – Vasiljevic,Dragan (2305), Zimski Winter Open, 2005.

5.a3 Bd6 6.h3 Bh5 A) 7.c4 a5 (7...0-0 8.g4 Bg6 9.h4 h5 10.gh5 Bh5 11.Bg2 c6 12.Ngf3 Nbd7; 7...Bg6 8.e4 de4 9.de4 Nbd7 10.Qe2 Be7 11.e5 Ng8 12.Ne4 a5; 7...c6 8.Ngf3 0-0 9.e4 Bf4 10.Be2 dc4 11.Nc4 Nbd7 12.0-0 b5; 7...Nbd7 8.g4 Bg6 9.Bg2 0-0 10.Ngf3 a5 11.c5 Be7 12.h4 h5) 8.g4 Bg6 9.h4 h6 10.ba5 c6 11.Qb3 Qe7 12.Bf6 Qf6; B) 7.Ngf3 Bf3 8.Nf3 a5 9.b5 0-0 10.e3 c6 11.bc6 Nc6 12.Be2 Qe7; C) 7.g4 Bg6 8.Bg2 a5 9.b5 0-0 10.c4 a4 11.Ngf3 c6 12.bc6 Nc6.

5.a3 Nbd7 6.Ngf3 c5 7.bc5 Bc5 8.e3 0-0 9.Be2 Rc8 10.0-0 Qc7 11.h3 Bh5 (11...Bf3 12.Bf3 Rfd8 13.c4=) 12.c4= Rfd8 (12...dc4 13.Nc4 b5 14.Nce5=) 13.Rc1 (13.cd5 Nd5 14.Rc1 Qa5=) 13...dc4 14.Nc4 b5 15.Nce5 Ne5 16.Ne5 Be2 17.Qe2 Qb7 18.Rfd1 (18.Rc2 Bd6=) 18...Bd6 19.Bd4 (19.e4 Qa6=; 19.e4 Qa6=) 19...Ba3=+ 20.Rb1 (20.Rc8 Rc8 21.Ra1 Bc5=+) 20...a6 (20...a5 21.Ra1 Bb4 22.Rdc1–/+) 21.Nc4 (21.Qa2 Bd6–/+) 21...Be7 22.Bb6 Rd5 (22...bc4? 23.Bd8 Qa7 24.Be7 Qe7 25.dc4+-; 22...bc4? 23.Bd8 Qa7 24.Be7 Qe7 25.dc4+-) 23.e4 (23.Bd4 Nd7–/+; 23.Bd4 Nd7–/+) 23...Rd7 (better 23...Ne4!? 24.de4 Rd1 (24...Rc4? 25.ed5 ed5 26.Be3+-) 25.Rd1 Rc4–+; better 23...Ne4!? 24.de4 Rd1 (24...Rc4? 25.ed5 ed5 26.Be3+-) 25.Rd1 Rc4–+) 24.Ba5–/+ Bd8 25.Bd2? (25.Bd8 Rcd8 26.Ne5 Rc7–/+; 25.Qe3 Ba5 (25...bc4?! 26.Rb7 Rb7 27.Bc3=) 26.Na5 Qa8–/+) 25...Qc7 (25...Ne4!? 26.Ne5 Nd2 27.Rd2–+; better 25...Ne4!? 26.Ne5 Nd2 27.Qd2–+) 26.Ne3 (26.Rdc1!? Rb8 27.Na5=+; 26.Rdc1!? Rb8 27.Na5=+) 26...Qe5–+ 27.Bc1 (27.Nf1 Bb6–/+) 27...Bb6 (27...Bc7 28.g3–+) 28.Qa2–/+ a5 (28...Ra7 29.Bb2 Qg5 30.Rbc1–+) 29.Bb2 Qg5 30.Nc4? (better 30.Bf6!? gf6 31.Qe2–/+; better 30.Bf6!? gf6 31.Qe2–/+) 30...bc4–+ (30...Bf2 31.Kf2 bc4 32.Rbc1–+) 31.Bf6 Qf6 32.Rb6 Qc3 (32...Rd3 33.Rdb1 Qd8 34.Qa4–+) 33.Qb1 Rcd8 (33...Rd3 34.Rc1 Qd4 35.Rb8–+) 34.Rc1 (34.Rb8!? cd3 35.Rd8 Rd8–+; 34.Rb8 cd3 35.Rd8 Rd8–/+) 34...Qd3 35.Qd3 (35.Qb5 c3–+ (35...Qe4?? 36.Qd7 Qa8 37.Qa4+-); 35.Qb5 c3 (35...Qe4? 36.Qd7 Qa8 37.Qe7+-) 36.Qd3 Rd3–+) 35...cd3 (35...Rd3?! 36.Rc4 Kf8 37.Ra6=+; 35...Rd3?! 36.Rc4 Kf8 37.Ra6=+) 36.Ra6 d2 (36...Rd4!? 37.Ra5 Re4 38.Kf1–+; better 36...Rd4!? 37.Ra5 Re4 38.Kf1–+) 37.Rd1 h6 (37...f5 38.Kf1–+) 38.Ra5 Rc7 (38...Rd4 39.f3 Rc4 40.Kf2–/+) 39.Kf1–/+ Rc4 (39...Rc2!?–/+) 40.f3=+ Rc1 (better 40...Rc2!?–/+; 40...Rc2 41.Ke2=+) 41.Ke2= Kh7 (41...Rd1 42.Kd1 Kf8 43.Ra2=) 42.Ra2 Rd1 43.Kd1 Kg6 ½–½. Stefanova,M (1985) – Bulmaga,E (1650), Women's Open, Vratsa BUL, 2009.

5.a3 Nbd7 6.Ngf3 c6 7.h3 Bh5 8.g4 Bg6 9.Nh4 (9.Rg1 h6= 10.h4 a5 11.Bc3 Bd6 12.Nb3 ab4 13.ab4 Ra1; 9.c4 h6 10.cd5 cd5 11.Rc1 a5 12.b5 Qb6 13.Bd4 Bc5) 9...Qc7 (9...Bd6 10.Bg2+= (10.Nb3 0-0 11.Bg2 Re8 12.e3 Nb6 13.Na5 Qc7) 10...a5 11.Bc3 Be5 12.Be5 Ne5 13.Nb3 ab4; 9...c5 10.Rb1 Qc7 11.Bg2 Be7 12.Ng6 hg6 13.c4 0-0) 10.e3 (10.Bg2 0-0-0 11.c4 Kb8 12.Rc1 Qb6 13.Bf3 Be7) 10...e5 (10...Be7 11.Be2 (11.g5 Nh5 12.Rg1 Nb6 13.c3 0-0-0) 11...0-0-0 12.c4= Kb8 13.g5 Ne8; 10...Nb6 11.Ndf3 0-0-0 12.Qd2 Na4 13.Bd4 Kb8) 11.Be2 (11.g5 Ng8= 12.Qf3 a5 13.b5 Bd6) 11...h6 (11...Nb6 12.Ndf3 Bd6 (12...e4 13.Ng6 hg6) 13.g5= Nfd7) 12.Ng6+= fg6 13.Nf3 (13.c4 Be7+=) 13...g5 (13...0-0-0!?=) 14.h4+= gh4 (14...Ng4? 15.hg5 Qb6 16.Rh4+-) 15.Nh4 (15.Rh4 0-0-0 16.g5 Ng8+=) 15...Rh7 (15...0-0-0 16.Qd2+=) 16.Nf3 (16.Qd2 0-0-0+=) 16...g5 (16...0-0-0 17.Rc1=) 17.d4 (17.c4!? dc4 18.Qc2+=) 17...e4= (17...Ng4 18.Ng5 Re7 19.Bg4 hg5 20.de5 Ne5 21.Bd4+/–) 18.Ne5 (18.Nd2 0-0-0=) 18...Bd6 19.Nd7 Qd7 20.Kd2 (20.Rc1 0-0-0=) 20...0-0-0+= 21.c3 Kb8 22.a4 Ng8 (22...Rf8 23.a5+=) 23.Rg1 (23.a5 a6+=) 23...Rf7+= 24.Rg2 (24.Qe1 Ne7 25.a5 a6–/+) 24...Rdf8 (24...Ne7 25.Kc2–+) 25.Qg1 (25.Qh1 Rf2 26.a5 R8f3–/+) 25...Ne7 26.b5 Ng6 27.Ba3 Nh4 28.bc6 Qc6–+ 29.Bd6 Qd6 30.Rh2 Rc7 31.Qg3–/+ Qc6 32.Ra3 a6 33.a5? Nf3–/+ 34.Kc2?? Nh2–+ 35.Qh2 Qf6 36.Kd2 Kc8 37.Rb3 Rc6 38.Ke1 Qd6 39.Qg2?? Qc7 40.Kd2 Qa5 41.Kc2 Rcf6 42.Qg1 Qa2 43.Rb2 Qa4 44.Kb1 Rf2 45.Qh1 R8f6 46.Ra2 Rb6 47.Ka1 Qb3 48.Qe1 Rff6 49.Qc1–+ Rbc6 50.Ra3 Qb6 51.Ka2 Rf2 52.Qe1 Rcf6 53.Rb3 Qc7 54.Rb2 Qh2 55.Qd1 b5 56.Ka3 Rg2 57.Qb3 Qd6 58.Ka2 Rff2 59.Qd1 Qh2 60.Ka3 Re2 61.Qf1 Rb2 62.Qf5 Kc7 63.Qf7 Kc6 64.Qe8 Kb6 65.Qd8 Qc7 66.Qc7 Kc7 67.c4 bc4 68.Ka4 Rb3 69.Ka5 0–1. Babichev,Vyacheslav – Vogiatzis,Joannis (2050), LGA Premium Cup, Nuernberg GER, 2004.

5.a3 Nbd7 6.Ngf3 c6 7.Nd4 A) 7...e5 8.h3 Bh5 9.Nf5 Bg6 10.g4 a5 11.c3 h5 12.Nh4 hg4 13.Ng6 fg6; B) 7...Bd6 B1) 8.c4 0-0 (8...Bh5 9.g3 0-0 10.c5 Bc7 11.Bh3 e5 12.Nf5 b6 13.cb6 ab6; 8...h6 9.h3 Bh5 10.c5 Bc7 11.g4 Bg6 12.Bg2 Qe7 13.0-0 0-0) 9.h3 Bh5 10.c5 Bc7 11.g4 Bg6 12.Bg2 Qe7 13.Qb3 a5; B2) 8.h3 Bh5 (8...Bf5 9.c4 0-0 10.cd5 cd5 11.Rc1 Bg6 12.Nb5 Be7 13.Nb3 a6) 9.g4 Bg6 10.c4 0-0 11.Bg2 c5 12.Nb5 Bf4 13.Qb3 Re8; C) 7...Bh5 C1) 8.g3 e5 (8...Qb6 9.Bg2 c5 10.N4f3 cb4 11.ab4 Bb4 12.Bd4 Qc7 13.c3 Bc5; 8...c5 9.bc5 Nc5 10.Rb1 e5 11.N4f3 e4 12.Ne5 Bd6 13.d4 Ncd7) 9.N4f3 Bd6 10.Bg2 a5 11.c4 ab4 12.ab4 Ra1 13.Qa1 Bb4; C2) 8.N2f3 Qb6 9.Nb3 Bd6 10.h3 Bf3 11.gf3 e5 12.Rg1 g6 13.Rc1 0-0; C3) 8.c4 c5 (8...Be7 9.h3 c5 10.bc5 Nc5 11.g4 Bg6 12.Qc2 0-0 13.Bg2 Rc8; 8...a5 9.c5 Be7 10.h3 0-0 11.g4 Bg6 12.Bg2 Qc7 13.0-0 e5; 8...Ne5 9.Ne6 Nd3 10.ed3 Qe7 11.Be2 Qe6 12.Bf6 gf6 13.cd5 cd5; 8...Qb6 9.N4f3 c5 10.cd5 ed5 11.Rb1 cb4 12.Bd4 Qb5 13.g3 Bd6) 9.bc5 Bc5 10.cd5 ed5 11.f3 0-0 12.N2b3 Bd6 13.Nf5 Be5; C4) 8.h3 Bd6 (8...Bg6 9.c4 e5 10.N4f3 Bd6 11.Nh4 0-0 12.Ng6 hg6 13.e3 d4; 8...e5 9.Nf5 Bg6 10.g4 h5 11.Nh4 hg4 12.Ng6 fg6 13.c4 Qb6; 8...Qb6 9.g4 Bg6 10.N4f3 c5 11.Rb1 Qa6 12.g5 Nh5 13.bc5 Bc5; 8...c5 9.bc5 Nc5 10.g4 Bg6 11.Bg2 Be7 12.N2f3 0-0 13.Rb1 a6) 9.g4 Bg6 10.N2f3 0-0 11.Bg2 Qb6 12.Nb3 h6 13.Qd2 Rac8.

5.a3 Nbd7 6.Ngf3 c6 7.h3 Bf3 8.Nf3 a5 (8...c5 9.Qd2 Qb6 10.e3 cb4 11.Bd4 Qb5 12.ab4 Bb4 13.c3 Bd6; 8...Bd6 9.e4 Qc7 10.Qe2 Ne5 11.Ne5 Be5 12.d4 Bf4 13.g3 Bh6; 8...Be7 9.e3 0-0 10.Bc3 Qc7 11.Be2 c5 12.bc5 Bc5 13.0-0 Bd6) 9.c3=+ (9.Qd2 Bd6 10.g4 0-0 11.c3 Nb6 12.Bg2 Re8 13.0-0 h6) 9...Bd6 10.e3 Qb6 11.Be2 0-0 12.0-0 e5 13.Qc2 e4.

5.a3 Nbd7 6.Ngf3 c6 7.h3 Bh5 8.g4 (8.e4 de4 (8...Nb6 9.e5 Nfd7 10.c4 c5 11.Qb3 Be7 12.Be2 Qc7 13.0-0 0-0; 8...Bg6 9.e5 Nh5 10.Nb3 f6 11.ef6 gf6 12.Be2 Qc7 13.Nfd4 Nf4) 9.de4 Be7+= (9...Qc7 10.e5 Nd5 11.c4 Ne7 12.Be2 0-0-0 13.0-0 Kb8) 10.Bd3 0-0 11.0-0 a5 12.Bc3 Nb6 13.Qb1 Na4; 8.c4 Bg6 (8...Be7 9.e3 h6 10.Be2 0-0 11.0-0 Qc7 12.Bc3 e5 13.Qc2 Rfe8; 8...h6 9.Nh4 dc4 10.Nc4 Nd5 11.Nf3 Bf3 12.gf3 b5 13.e4 Nb4; 8...Bd6 9.c5 Bc7 10.e3 0-0 11.Be2 Qe7 12.0-0 h6 13.Re1 e5; 8...a5 9.g4 Bg6 10.g5 Nh5 11.Bc3 Be7 12.ba5 0-0 13.cd5 cd5) 9.g3 Bd6 10.Bg2 0-0 11.0-0 Qc7 12.Qc2 h6 13.cd5 ed5) 8...Bg6 9.Nh4 (9.Rg1 h6= 10.h4 a5 11.Bc3 Bd6 12.Nb3 ab4 13.ab4 Ra1; 9.c4 h6 10.cd5 cd5 11.Rc1 a5 12.b5 Qb6 13.Bd4 Bc5) 9...Qc7 (9...Bd6 10.Bg2=+ (10.Nb3 0-0 11.Bg2 Re8 12.e3 Nb6 13.Na5 Qc7) 10...a5 11.Bc3 Be5 12.Be5 Ne5 13.Nb3 ab4; 9...c5 10.Rb1 Qc7 11.Bg2 Be7 12.Ng6 hg6 13.c4 0-0) 10.e3 (10.Bg2 0-0-0 11.c4 Kb8 12.Rc1 Qb6 13.Bf3 Be7) 10...e5 (10...Be7 11.Be2 (11.g5 Nh5 12.Rg1 Nb6 13.c3 0-0-0) 11...0-0-0 12.c4= Kb8 13.g5 Ne8; 10...Nb6 11.Ndf3 0-0-0 12.Qd2 Na4 13.Bd4 Kb8) 11.Be2 (11.g5 Ng8= 12.Qf3 a5 13.b5 Bd6) 11...h6 (11...Nb6 12.Ndf3 Bd6 (12...e4 13.Ng6 hg6) 13.g5= Nfd7) 12.Ng6+= fg6 13.Nf3 (13.c4 Be7+=) 13...g5 (13...0-0-0!?=) 14.h4+= gh4 (14...Ng4? 15.hg5 Qb6 16.Rh4+-) 15.Nh4 (15.Rh4 0-0-0 16.g5 Ng8+=) 15...Rh7 (15...0-0-0 16.Qd2+=) 16.Nf3 (16.Qd2 0-0-0+=) 16...g5 (16...0-0-0 17.Rc1=) 17.d4 (17.c4!? dc4 18.Qc2+=) 17...e4= (17...Ng4 18.Ng5 Re7 19.Bg4 hg5 20.de5 Ne5 21.Bd4+-) 18.Ne5 (18.Nd2 0-0-0=) 18...Bd6 19.Nd7 Qd7 20.Kd2 (20.Rc1 0-0-0=) 20...0-0-0=+ 21.c3 Kb8 22.a4 Ng8 (22...Rf8 23.a5=+) 23.Rg1 (23.a5 a6=+) 23...Rf7=+ 24.Rg2 (24.Qe1 Ne7 25.a5 a6–/+) 24...Rdf8 (24...Ne7 25.Kc2–+) 25.Qg1 (25.Qh1 Rf2 26.a5 R8f3–/+) 25...Ne7 26.b5 Ng6 27.Ba3 Nh4 28.bc6 (28.Bd6 Qd6 29.Rh2 Nf3 30.Bf3 Rf3–/+ (30...ef3?! 31.Rh5+=)) 28...Qc6–+ 29.Bd6 Qd6 30.Rh2 Rc7 (30...Nf3 31.Bf3 Rf3 32.a5–+) 31.Qg3–/+ Qc6 32.Ra3 a6 (32...Rf3 33.Bf3 Nf3 34.Kc2 Nh2 35.Qh2 Qa6–/+) 33.a5? (33.Kc1!?=+) 33...Nf3–/+ 34.Kc2?? (34.Bf3 Rf3 35.Qg1–+) 34...Nh2–+ 35.Qh2 Qf6 (35...Kc8!? 36.Kd2–+) 36.Kd2 Kc8 37.Rb3 (37.c4 dc4 38.Rc3 Rc6–+ (38...Qf2?! 39.Qh6 Kb8 40.Qd6–+)) 37...Rc6 (37...Qc6 38.Qe5–+) 38.Ke1 Qd6 (better 38...Qe7–+) 39.Qg2?? (better 39.Qd6 Rd6 40.c4–+) 39...Qc7 40.Kd2 (40.Qg3 Qa5 41.Qe5 Rc3 42.Rc3 Qc3 43.Kf1–+) 40...Qa5 41.Kc2 (41.Bd3 Rcf6 42.Bb1 Rf2 43.Qf2 Rf2 44.Kc1 Rh2 45.Kd1 Qa4 46.Kc1 Qb3 47.Bd3 Qb2 48.Kd1 Qd2) 41...Rcf6 42.Qg1 Qa2 (better 42...Rf2 43.Qd1 Rh2–+) 43.Rb2 Qa4 44.Kb1 Rf2 45.Qh1 (45.Qe1 Rg2 46.Qd1 Qa3–+) 45...R8f6 (better 45...Re2!? 46.Re2 Qb5 47.Rb2 Rf1 48.Qf1 Qf1 49.Kc2 Qe2 50.Kb3 Qg4 51.Rb1–+) 46.Ra2 (46.Qc1–+) 46...Rb6 47.Ka1 Qb3 48.Qe1 (48.Qc1 Rg2 49.Ra3 Rg1 50.Rb3 Rc1 51.Kb2 Rb3 52.Kc1 Rc3 53.Kd2 Rb3–+) 48...Rff6 (48...Rg2 49.Rc2 Qc2 50.Qc1 Qc1 51.Ka2 Re2) 49.Qc1–+ Rbc6 50.Ra3 (50.c4 dc4 51.Ra3 Qb4–+) 50...Qb6 (50...Qb4 51.c4 Rf2 52.Ra2 Re2 53.Re2 Rc4 54.Rc2 Qa4 55.Kb2 Qc2 56.Qc2 Rc2 57.Kc2–+) 51.Ka2 (51.Qg1–+) 51...Rf2 52.Qe1 Rcf6 53.Rb3 (53.Qd2 Qb5! 54.Bb5 Rd2 55.Kb3 Rb6–+) 53...Qc7 (better 53...Qa5 54.Kb1 Rg2 55.Rb2–+) 54.Rb2 Qh2 (54...Rg2 55.c4 dc4 56.Ka1–+) 55.Qd1 (55.c4 dc4 56.Qb4 b5–+) 55...b5 56.Ka3 (56.Rc2 Rg2 57.Kb3 Rff2–+) 56...Rg2 57.Qb3 Qd6 58.Ka2 (58.Qb4 Qb4 59.Kb4–+ (59.Rb4?? Re2 60.Rb1 Re3–+)) 58...Rff2 59.Qd1 Qh2 60.Ka3 Re2 61.Qf1 Rb2 (61...Qd6 62.Rb4 Ra2 63.Kb3 Rgb2) 62.Qf5 Kc7 63.Qf7 Kc6 64.Qe8 Kb6 65.Qd8 (65.Qe6 Ka5 66.Qd5 Ra2 67.Qa2 Ra2 68.Kb3 Qc2) 65...Qc7 66.Qc7 (66.Qf6 Kb7 67.Qa6 Ka6 68.c4 Qa5) 66...Kc7 67.c4 bc4 (67...dc4 68.d5 Rb3) 68.Ka4 Rb3 69.Ka5 0–1. Babichev,Vyacheslav – Vogiatzis,Joannis (2050), LGA Premium Cup, Nuernberg GER, 2004.

5.a3 Nbd7 6.Ngf3 Bd6 7.e4 de4 8.de4 0-0 9.Be2 Bf3 10.Bf3 Be5 11.c3 c5 12.Nc4 cb4 13.Ne5 (13.cb4!? Bb2 14.Nb2+=) 13...Ne5–/+ 14.cb4? (better is 14.Be2 Ne4 15.cb4–/+) 14...Nd3–+ 15.Ke2 Nb2 16.Qc2 Qd4 17.Rhc1 (17.Rhb1 Qc4 18.Qc4 Nc4 19.Rc1–+) 17...Rad8 18.Kf1 Qd3 (better is 18...Nd3 19.Rd1 Ne4 20.Be4 Qe4 21.Qe2–+) 19.Be2 Qc2 20.Rc2 Nd3 21.Rc7 Nf4 22.f3 (22.e5 Ne4 23.f3 Nd2 (23...Ne2?! 24.Ke2 Nd2 25.Rd1–/+) 24.Kf2 b6–+) 22...Ne2 (22...Rd2!? 23.Re1 Rb8 24.g3 Ne2 25.Re2 Rd1 26.Re1–+) 23.Ke2 Rd7 24.Rac1 Rc7 25.Rc7 Rb8 26.a4 Kf8 27.a5 Ke8 28.b5 Nd7 29.Ke3 Kd8 30.Rc3 Rc8 31.Rd3 (31.Rc8 Kc8 32.Kd4 a6 33.ba6 ba6–+) 31...Rc5 32.Rb3 a6 33.ba6 ba6 34.Ra3 e5 35.f4 ef4 36.Kf4 Kc7 37.g4 Nb8 38.h4 Nc6 39.h5 Ra5 40.Rc3 Ra1 0–1. Franco Rincon,David (1670) – Cano Cabanillas,Javier (1985), Championship de Madrid Individual Absol, 2013.

5.a3 Be7 6.Ngf3 h6 7.e3 Nbd7 (7...a5 8.ba5 0-0 9.Be2=) 8.Be2 0-0 9.0-0 c5 10.b5 (10.bc5 Nc5 11.Bf6 Bf6=) 10...a6 11.c4 (11.ba6 Ra6 12.h3 Bf3 13.Nf3 Qc7=) 11...Qc7 (11...ab5 12.cb5 Qa5 13.Qb3=+) 12.Rc1 (12.h3!? Bf3 13.Nf3 ab5 14.cb5=) 12...ab5=+ 13.cb5 e5 (13...Ra5 14.Qc2=+) 14.Qc2 Bd6 15.e4 Nb6 (15...Be6 16.Rfe1=+) 16.d4 (better 16.ed5!? Nfd5 17.Ne4=) 16...ed4–/+ 17.Bd4 Bh2 (better 17...Bf3!? 18.Bf3 Bh2 (18...cd4?! 19.Qc7 Bc7 20.Rc7=) 19.Kh1 cd4 20.Qc7 Bc7 21.Rc7 Rfb8–/+) 18.Nh2= Be2 19.Bc5 (better 19.Rfe1!? Bb5 20.Qc5 Qc5 21.Bc5=) 19...Rfe8 (19...Bf1 20.Bf8 Qc2 21.Rc2–+) 20.Rfe1 Bh5 (20...Bb5!? 21.Qb2 Nc4 22.Qb5 Ra5=+) 21.ed5 (21.e5 Bg6 22.Qa2 Ne4 23.Ne4 Be4=) 21...Re1 22.Re1 Nbd5 23.Qc1 (23.Qc4 Rc8 24.Rc1 Qd7–/+) 23...Nf4 (better 23...Rc8 24.Nb3 Qd7–/+) 24.Nhf3?? (better 24.Qc4 Rc8 25.b6 Qc5 26.Qf4 Qb6 27.Nhf3–/+) 24...Nd3–+ 25.Re7 (25.Qc3 Nc5 26.Nd4–+) 25…Qe7 (25...Qe7 26.Be7 Nc1 27.Bf6 gf6–+; 25...Nc1 26.Rc7 Nd3 27.Bd4+-; 25...Qc5 26.Qc5 Nc5 27.Rc7–+) 0–1. Da Silva Junior,Marco Aurelio (1710) – Pereira,G (1985), 3rd Floripa Chess Open, 2017.

4.a3 A) 4...Qd6 5.h3 Bc8 6.Nf3 Nbd7 7.d4=; B) 4...a5 5.Nd2 ab4 6.ab4 Na6 7.b5=; C) 4...d4 5.h3 Bc8 6.Nf3 c5 7.c3=; D) 4...a6 5.h3 Bd7 6.Nd2 Bc6 7.Ngf3=; E) 4...e6 5.Qd2 Bd6 6.Qg5 Rg8 7.f3=.

4.Qd2 A) 4...Na6 5.f3 Bc8 6.e4 de4 7.fe4=; B) 4...a5 5.h3 Bd7 6.ba5 Nc6 7.Nf3=+; C) 4...d4 5.h3 Bd7 6.Bd4 a5 7.ba5+=; D) 4...Qd6 5.c4 dc4 6.dc4 Qd2 7.Nd2=; E) 4...e6 5.e3 Bd6 6.f3 Bh5 7.c4=+.

4.f3 A) 4...Bd7 5.e4 e5 6.Be5 de4 7.b5=+; B) 4...Bh5 5.e3 Bg6 6.a3 e6 7.e4=+; C) 4...Bf5 5.e4 Bg6 6.Nd2 e6 7.a3=+; D) 4...Be6 5.e4 de4 6.fe4 a5 7.b5=; E) 4...Bc8 5.e4 e5 6.Be5 Nc6 7.Bf6=+.

4.h3 A) 4...Bc8 5.Nd2 Nbd7 6.Ngf3 e6 7.a3=+; B) 4...Bf5 5.Nd2 e5 6.Be5 Bb4 7.c3=; C) 4...Bd7 5.c4 e6 6.a3 a5 7.b5=+; D) 4...Bh5 5.g4 Bg6 6.a3 e6 7.Bg2=+.

4.a3 c6 5.h3 Bh5 6.c3 Nd7 7.Nd2 f5 8.Ndf3 Ngf6 9.Ng5 Qe7 10.Qc2 h6 11.N5f3 g5 12.Nh2 Ne4=+ 13.e3 Qf7 14.Bd3 Ndf6 15.Ne2 Bd6 16.Nf1 0-0 17.f3+= Nd7 18.Be4?? fe4–/+ 19.Neg3 ef3–+ 20.Nh5 fg2 21.Qg2 Qh5 22.Ng3? Qf3 23.Qf3 Rf3 24.Nf1 e5 25.0-0-0 e4 26.Kb1 Nb6 27.Bc1 Nc4 28.Ka2 a5 29.Re1 ab4 30.Nd2 Ne3 31.Bb2?? bc3 32.Bc1 cd2 33.Bd2 Ra3 34.Kb1 Nc4 35.Bc1 Rab3 36.Ka2 Rf2 37.Ka1 Bb4 38.Re3 Ne3 (39.Bd2 Nc2 40.Ka2 Nd4 41.Rd1 Rf8 42.Bb4 Ra8 43.Ba3 Raa3) 0–1. rla – thotares (1685), internet, 2007.

4.a3 Nd7 5.f3 Bh5 6.e3 Bd6 7.g3 c6 8.c4 Bg6 9.Nc3 Ngf6 10.Bd3 0-0 11.Nge2 Bd3 12.Qd3 Nb6 13.c5 Nc4 14.Bc1 Bc7 15.0-0 b5 16.e4 a5 17.Bg5 h6 18.Bf6 Qf6 19.e5 Qg6 20.Nf4 Qd3–/+ 21.Nd3 Nd2 22.Rf2 Nb3 23.Rb1 Nd4–+ 24.g4 ab4 25.ab4 Ra3 26.Rc1 Rfa8 27.Kg2 Rb3 28.f4 Raa3 29.Nb1 Ra1 30.Nd2 Rba3 31.Ra1–/+ Ra1 32.Nf3 Nf3 33.Kf3 f6 34.Ke3 fe5 35.fe5 Bd8 36.Kd4 Bh4 37.Rf3 Bg5 38.Kc3 Rh1 39.h3 Rh2 40.Nf2 Rg2 41.Nd3 d4 42.Kd4 Rc2–+ 43.Nf2 Rc4 44.Kd3 Rb4 45.Kc2 Bf4 46.Nd3–/+ Rc4 47.Kb3 Bd2 48.Nf2 Bb4 49.Nd1 Bc5 50.Nb2 Re4 51.Nd3?! Bd4 52.Nf4 Be5 53.Ne6 Bd6 54.Nd8 c5 (55.Nc6 Ra4–+) 0–1. Asparuhov,Sasho (2200) – Djuric,Stefan (2310), Pernik, 1976.

4.c3 a5 5.ba5 c6 6.Nf3 Nd7 7.g3 Ra5 8.Bg2 Qb6 9.Qd2?? Rb5–+ 10.0-0 Rb2 11.Qf4 Ngf6 12.c4 Re2 13.Nc3 Rc2 14.Rfc1 Rc1 15.Qc1 dc4 16.Ne2 Ne4 17.a4 Bb4 18.Qc4 Bf3 19.Bf3 Nd2 20.Qd3 Nf3 21.Qf3 1–0. I need chocolate – KrustytheClown, ChessWorld.net, 2005.

4.c3 Bd6 5.Nf3 Nf6 6.h3 Bf5–/+ 7.Nbd2 a5 8.a3 Nbd7 9.Nh4 Be4 10.Ne4 de4–/+ 11.g4 e3! 12.Bg2 g5 13.Nf3 h5 14.fe3 Bg3–/+ 15.Kf1 Ne4 16.Qc2 Nf2–+ 17.Rg1 hg4 18.Bh1? Nh1 19.Rh1 gf3 20.ef3 ab4 21.ab4 Ra1 22.Ba1 Qe7 23.Kg2 Qd6 24.Qe4 Bh4 25.f4 Qa6 26.Qf3 Qa2 27.Kf1 gf4 28.ef4 Qd2 29.c4 Qe1 30.Kg2 Rg8 31.Kh2 Qd2 32.Qe2 Qe2# (32...Qf4?!=) 0–1. rla – pierre (2135), internet, 2007.

4.c3 Nf6 5.h3 Bf5 6.Nd2 Bd6 7.e3 0-0 8.Ngf3 Nbd7 9.Be2 Ne4 10.Bd3? Nf2!–+ 11.Kf2 Bd3 12.Nb3 Be4 13.Nc5 Nc5 14.bc5 Be7 15.Ne5 f6 16.Nd3 Qe8 17.Nf4 Qc6 18.Qg4 e5 19.Ne6? Rf7 20.Rhf1 f5 21.Qg3 Qe6 22.Kg1 Rf6 (23.c4 Rg6–+) 0–1. piotrek3054 – pierre (2180), internet, 2007.

5.b5 Nf6 6.Nf3 Nbd7 7.e3 Bd6 8.c4 dc4 9.Bc4 0-0 10.0-0 c5 11.dc5 Nc5 12.h3 Bf5 13.Be2 Rc8 14.Nbd2 Nd3 15.Bf6 Qf6 16.e4 Nb2 17.Qb1 Bg6 18.a4 Qc3 19.Ra2 Nc4 20.Nc4 Rc4 21.Bc4 Qc4 22.Re1 Bf4 23.Qc2 Rc8 24.Qc4 Rc4 25.Nd2 Rc3 26.f3 Kf8 27.Kf2 Ke7 28.Rd1 f5 29.ef5 Bf5 30.Re1 Bc7 31.Ne4+- Rc4 32.g4 Bg6 33.h4 e5 34.Kg3 Bf7 35.Raa1 Rd4 36.h5 Bd5 37.Rac1 Kd8 38.Rcd1 Bb3 39.Rb1 Ba4 40.b6 Bb8 41.Nc5 Bc6 42.Ne6 Kd7 43.Nd4 ed4 44.f4 Bd6 45.Rbc1 Ba3 46.Rc4 Bb2 47.f5 a4 48.h6 gh6 49.f6 d3 50.Rf4 Bd5? 51.f7 Bf7 52.Rf7 Kc6 53.Re6 Kd5 54.Re3 a3 55.Rd3 Kc6 56.Rd2 a2 57.Rc7 Kb6 58.Rb2 Kc7 59.Ra2 h5 60.g5 Kc6 61.Rh2 Kd5 62.Rh5 Ke4 63.Rh7 Kf5 64.Kh4 b6 65.Rf7 Ke6 66.g6 Kd5 67.g7 Kd6 68.g8Q Kc5 69.Qg5 Kc4 70.Rf4 Kd3 71.Qg3 Kd2 72.Rf2 Kd1 73.Qg1 1–0. bambinik – TURBO_MASTER2888, internet, 2002.

5.c3 Bd6 6.Nd2 Nf6 7.f3 Bf5 8.e3 0-0 9.b5 Nbd7 0–1. willow27 – michaelbuss, ChessWorld.net, 2007.

5.c4 dc4 6.Qc2 c6 =+.

5.Nd2 Nf6 6.Ngf3 a5 7.c3 0-0 8.e3=+ Nbd7 9.Be2 ab4 10.ab4 Qe7 (11.0-0 Ra1 12.Qa1 e5 13.de5 Ne5=+; 10...Ra1 11.Qa1 Ne4 12.Qd1=+). Reussner,Hans_Dieter (1625) – Fakler,Udo (2000), Meisterschaft, 2001.

5.Qd3 c6 6.Nd2 Bf5 7.e4= de4 8.Ne4 Bc7 9.Nf3 a5 10.c4 ab4=+ 11.ab4 Na6 12.b5 cb5 13.c5 Kf8 14.Nfd2 Nf6 15.f3 Ba5 16.Qb5 Nc7 17.Qe2= Nfd5 18.Kf2 Nf4 19.Qd1 Bb4 20.Ra8 Qa8 21.Qb3 Ncd5 22.Nc4+/– Qd8 23.g3 Ng6 24.Nb6!+- Ba5 25.Nd5 Qd5 26.Bc4 Qc6 27.Nd6 Bh3 28.Ra1 (28...Bc7 29.Ra8 Ke7 30.Nc8 Rc8 31.Rc8 Bg3 32.Kg3 (32.hg3?! Qc8 33.Bd3 Bf5+=) 32...Qc8 33.Kh3+-) 1–0. Zylla,Johannes – Reisinger,Georg, corr, 1998.

5.Qd3 Nc6 =+.

5.Nd2 c6 6.Ngf3 Nbd7 7.e3 Bd6 8.c4 Qe7 9.Be2 e5 (9...0-0 10.0-0=) 10.Ne5 Ne5 (10...Be2!? 11.Qe2 Ne5 12.de5 Be5 13.Be5 Qe5=) 11.de5+= Be5 12.Be5 (12.Bg4?! Bb2 13.Ra2 Be5+=) 12...Qe5 13.Bg4 Ng4 14.h3 (14.cd5!? cd5 15.Rc1+=) 14...Nf6= 15.0-0 0-0 16.Qc2 Rad8 17.Rfd1 h6 18.Nf3 Qh5 19.Rd4 dc4 20.Qc4 Rd4 21.Qd4 a6 (21...Ra8 22.Rd1=) 22.Qb6 (better is 22.Qa7!?+/–) 22...Qb5+= 23.Qc7 Nd5 24.Qd7 Qb6 25.Ne5 Nf6 26.Qe7 Nd5? (26...Qb5 27.a4 Qe2 28.Rf1= (worse is 28.Qb7 Qb2 29.Rd1 Qe5–/+)) 27.Qd6?? (better is 27.Qf8! Kf8 28.Nd7 Ke7 29.Nb6 Nb6 30.Rc1+-) 27...Rd8 28.Nd7 Qc7 29.Qc7 Nc7 30.Nc5 b6 31.Na4 b5 32.Nc5+= Rd2 33.Rc1 f5 34.g4 f4 35.e4 Ne8 36.Na6 Nd6 37.Nc5 Nc4 38.a4 Rb2 39.ab5 cb5+/– 40.Nd3 Rb3 41.Nf4 Rb4 42.Nd5 Rb2 43.Ra1 Nd2 44.Ra8 Kh7 45.Re8 b4 46.e5 b3 47.e6 Rb1 48.Kg2 Nc4 49.e7+- Re1 50.Rb8 b2 51.Rb2! Re7 52.Ne7 Nb2 53.f4 g6 54.Kf3 Kg7 55.h4 Kf7 56.Nc6 Kf6 57.g5 hg5 58.hg5 Ke6 59.Nd4 Kf7 60.Ke4 Nc4 61.Nf3 Ke6 62.Ne5 Nd6+/– 63.Kf3 Kf5 64.Nc6 Ke6 65.Kg4 Nf7 66.Nd4+- Kd5 67.Nf3 Ke6 68.Nh4 Nh8 69.Kf3 Nf7 70.Kg4 Nh8 71.Nf3 Nf7 72.Nd4 Kd5+/– 73.Nb5 Ke6 74.Nc7 Kd6 75.Ne8 Ke7 76.Nf6 Ke6 77.Ng8 Nd6 78.Nh6 Ne4 79.Kf3 Nd6 ½–½. Farkas,Miso (2130) – Miranovic,Rajko (2375), Vrbas SER, Vojvodina 2nd League, 2011.

5.Nd2 Bd6 6.g3 h5 7.h4 (7.Bg2 h4+=) 7...Nbd7 8.c4 c6 9.c5 Bc7 10.Ngf3 Qb8 11.Rg1 (11.Bg2 a5=) 11...e5 12.de5 Ne5 13.Ne5 Be5 14.Qc2 0-0 15.Nf3 (15.e3 Rd8+=) 15...Bf3–/+ 16.ef3 a5 17.Rb1 ab4 18.ab4 Re8 19.Be5? (better is 19.Kd1–/+) 19...Qe5–+ (19...Re5?! 20.Kd1–/+) 20.Be2 d4 (better is 20...Ra1!? 21.Rd1 Rd1 22.Qd1 Qb2–+) 21.Kf1–/+ Qe6 22.Qc4 (better is 22.g4–/+) 22...Nd5–+ 23.Re1 (23.g4–+) 23...Ra2 (better is 23...Qh3!? 24.Rg2 Nc3 25.Qd4 Ne2 26.Re2 Re2 27.Ke2 Qg2 28.Qe4–+) 24.g4?? (24.Qa2 Ne3 25.fe3 Qa2 26.ed4 Qd2–+) 24...d3 (better is 24...Nf4!? 25.Qe6 Re6 26.Rd1 Ree2 27.Rg2 hg4 28.fg4 Ng2 29.Kg2 Rf2 30.Kg3 Rg2 31.Kh3–+) 25.Qd3?? (25.Qa2 Ne3 26.fe3 Qa2 27.Bd3–+) 25...Nf4–+ (25...Nb4?! 26.Qe4–+) 26.Qe4 Re2 27.Re2 Ne2 28.Qe6 Re6 (worse is 28...fe6 29.Ke2 Rd8 30.gh5+/–) 29.Rg2 Nf4 30.Rg3 Nd3 31.f4 Re1 32.Kg2 Nf4 (worse is 32...Nb4 33.gh5 Nd5 34.h6 Nf4 35.Kf3–+) 33.Kf3 Nd5 (33...Ne2!? 34.Rg2 Nd4 35.Kg3 hg4 36.Kg4–+) 34.gh5 Rb1 35.Kg2 (35.h6 Rb3 36.Ke4 Rg3 37.fg3 gh6–+) 35...Rb4 36.Kh3 (36.h6 g6–+) 36...Nf4 37.Kh2 Nh5 (37...Nh5 38.Re3 Rh4 39.Kg1 Rc4–+) 0–1. Pastor Briones (1940) – Fernandez Lopez (2170), Valencia region tt, 2004.

5.f3 Bf5 6.e3 Bd6 7.Nd2 0-0 8.c4 Nbd7 9.Ne2 c6 10.Ng3 Re8 11.Be2 Nh5 12.f4 Ng3 13.hg3 b6 14.Qa4 Qc7 15.g4 Bg6 16.Rc1 Nf6 17.g5 Ne4= 18.c5 bc5 19.dc5 Be7 20.Be5 Qd7 21.Ne4 Be4 22.b5 Rec8 23.bc6+/– Qe8 24.Ba6 Bg2 25.Rh2 Be4 26.Bc8 Qc8 27.c7 f6 28.Bd6 Bf8?? 29.gf6 e5 30.fe5 gf6 31.ef6 Qe6 32.Rf2 Kf7 33.Bf8 Kf8 34.f7 Rc8 35.Qd4 Bf5 36.Qh8 Kf7 37.Qh7 Kf6 38.Qh6 Ke7 39.Qg5 Qf6 40.Rf5 Qg5 41.Rg5 Kd7 42.c6 Ke6 1–0. bambinik – doble dragon, internet, 2002.

5.Nf3 a5 6.b5 Bd6 7.Ne5 Bf5 8.e3 0-0 9.c4 Qe7 10.Nc3 c5 11.Na4 cd4 12.Qd4 dc4 13.Nc4 Rd8 14.Qh4 Nbd7 15.Rd1 Nd5 16.Qe7 Be7 17.Nc3 Nc5 18.f3 Nc3 19.Bc3 Rd1 20.Kd1 Rd8 21.Ke2 Bd3 22.Kf2 Bf1 23.Rf1 a4 24.Ke2 Nb3 25.Rd1 Rc8 26.Kd3 f6 27.Nb2 Nc5 28.Kc2 e5 29.h3 Kf7 30.Nc4 Ne6 31.Nb6 Rc5 32.Na4 Rb5 33.Bb2 Ra5 34.Nc3 Ra6 35.Rd7 Nc5 36.Rc7 Ke6 37.f4 Rc6 38.f5 Kf7 39.Rc6 bc6 40.g4 g6 41.a4 g5 42.Ba3= Nb7 43.Be7+= Ke7 44.Ne4 Na5 45.Kc3+/– Nb7 46.Kb4 Nd6 47.a5 c5 48.Nc5 Nc8 49.Kb5 Kf7 50.Kc6 h5 51.Ne4 hg4 52.hg4 Ke7 53.Kc7 Na7 54.Kb7 (54...Nb5 55.Kb6+-) 1–0. bambinik – Marcel_the_best, internet, 2002.

4.a3 e6 5.Nd2 Bd6 6.Ngf3 a5 7.b5 0-0 8.e3 Ne4 9.Be2 Bf5 10.0-0 Nd7 11.c4 Qf6 12.c5 Bc5=+ 13.dc5 Qb2–/+ 14.Ne4 Be4 15.c6 bc6 16.bc6 Nc5 (17.Nd2 Rfb8–+; 16...Bf3 17.Bf3 Ne5 18.a4–+) 0–1. willow27 – marekt, ChessWorld.net, 2007.

5.a3 Bd6 6.Ngf3 Qe7 7.c4=+ c6 8.Qb3 0-0=+ 9.e3 Bf3 10.Nf3= Ne4 11.Bd3 f5 12.Qc2 Nd7 13.0-0+= Qf6 14.g3 g5 15.Ne1 Qh6 16.f3+= Nef6 17.Ng2 g4 18.Nf4 gf3 19.Rf3+/– Ne4 20.b5 Ng5 21.Rff1 Nh3 22.Kg2 Nf4= 23.ef4 Nf6 24.Rae1 Ne4 25.bc6 bc6 26.Re2 Qg7 27.Qa4 Rfc8 28.Qa6 Rab8+= 29.cd5 ed5 30.Rc2 Rc7 31.Qa4 Rb6 32.Bc1 Qe7 33.Bd2 Nd2 34.Rd2 Ba3 35.Bf5 Bb4= 36.Rdf2 Qf6=+ 37.Qc2 Qd4 38.Be6 Kf8 39.Qf5 Ke7 40.Re2 Kd6?? 41.Qf8+- (41...Re7 42.Qd8 Kc5 43.Qe7 Kb5 44.Qa7+-) 1–0. Autengruber,Robert – Kreuzer,Klaus (2100), Niederbayern–chT, 2001.

6.b5 a4 7.Ngf3 c6 8.Ne5 Bd6 9.Ng4 Ng4 10.e4 h5 11.e5+= Bc7 12.Bd3 Qh4 13.g3 Qd8 14.h3 Nh6 15.Qh5 Ba5 16.c3 Qb6 17.0-0 c5 18.Nf3 Nd7 19.c4 0-0-0 20.Qg5 dc4+/– 21.Bc4 Nf5 22.dc5 Nc5 23.Kg2 Kb8 24.Rad1–/+ Rd1 25.Rd1 Ne4 26.Bd4 Nd4 27.Qg7 Rd8 28.Nd4 Rd4–/+ (29.Rd4 Qd4 30.Qf8 Ka7 31.Qf7 Qc4–+) 0–1. Gross,Wilhelm – Merten,Rainer, xx/12, 1990.

6.b5 c6 7.a4 Bb4 A) 8.c3 Bd6 9.Ba3 0-0 10.Ngf3 cb5 11.ab5 Bf3=+; B) 8.h3 Bf5 9.c3 Bd6 10.e3 0-0 11.Ba3 Ba3=+.

6.b5 c6 7.a4 cb5 8.ab5 Nbd7 9.Ngf3 Rc8 10.Ne5 Ne5 11.de5 Nd7 12.h3 Bh5 13.c3 Ne5–+ 14.Nf3 Nc4 15.Qb3 Nb2 16.Qb2 Rc3! 17.e3 Bb4 18.Nd2 Re3 19.fe3 Qh4 (20.g3 Qg3#) 0–1. willow27 – michaelbuss, ChessWorld.net, 2005.

6.b5 c6 7.f3 A) 7...Bh5 8.e3 Be7 9.c4 Bg6 10.Qa4 0-0 11.Nh3 cb5=; B) 7...Bf5 8.e3 Be7 9.g4 Bg6 10.h4 h6 11.Nh3 Nfd7=+.

6.b5 c6 7.h3 A) 7...Bf5 8.e3 Be7 9.Ngf3 0-0 10.g4 Bg6 11.Ne5 Be4=; B) 7...Bh5 B1) 8.bc6 Nc6 9.c4 Be7 10.Rc1 Qb6 11.Qb3 Qb3=+; B2) 8.c4 dc4 9.Qa4 Qd5 10.Qc4 Qc4 11.Nc4 cb5–/+; B3) 8.g4 Bg6 9.e3 Qb6 10.h4 h6 11.c4 cb5=+.

4.e3 Nd7 5.Nc3 e5 6.Nd5 c6 7.Nc3 Bb4 8.a3 Be7 9.Bc4 Bh4 10.g3 b5 11.Bb3 Bf6 12.Ne4 Be7 13.Nh3 (13.f4 Ngf6 14.Nf6 Bf6= (worse is 14...gf6 15.Qf3+/–)) 13...Ngf6+= 14.Nhf2 Qc7 15.0-0 0-0 16.Qe2 a5 17.f4 ef4 18.ef4 Ne4 19.Ne4 Nc5 20.Nc5 Bc5 21.d4 Bb6 22.a4 Qd7 23.Qf2 Ba6 24.Rfe1 b4 25.Re5 Rae8 26.Rae1 Bc7 27.f5 Be5 28.de5 Qc7 29.e6+= fe6? 30.Re6+/– Re6 31.Be6 Rf7 32.Qd4 Kf8 33.Qc5 Ke8 34.Be5 Qb7 35.Bd6 Rd7 36.Qe5 Rd6 37.Qd6 Be2 38.Qe5 Bd1 39.Kg2 c5 40.Kf2 Qe7 41.Qb8 Qd8 42.Qb5 Ke7 43.Qc5 Ke8 44.Ke3 Qg5 45.Kd3 Qd8 46.Ke4 h6 47.h3 Qb8 48.Bd5 Qd8 49.Kd3 Qd7 50.g4 b3 51.f6 gf6 52.cb3 Qh7 53.Kd2 Qe7 54.Qc8 Qd8 55.Qd8 Kd8 56.Kd1 Kc7 57.Kd2 Kb6 58.Kc3 Kc5 59.Bf7 Kd6 60.Kc4 Ke5 61.Kb5 Kf4 62.Ka5 Kg3 63.Kb5 Kh3 64.a5 Kg4 65.a6 f5 66.a7 f4 67.a8Q Kg3 (67...Kg3 68.Bh5 Kh4 69.Qf3 Kg5 70.Qg4 Kf6 71.Qf4 Ke7 72.Kc6 Ke6 73.b4 Ke7 74.Qd6 mate). usingprogram (2010) – bumbara (1795), kurnik, 2012.

4.e4 d4 5.c3 (5.e5 Qd5 6.Qe2 Nc6 7.Qb5=) 5...e5 6.cd4 ed4 7.Ne2 =.

4.e4 de4 5.fe4 Nf6 6.e5 Nd5 7.a3 =.

4.e4 e5 5.Be5 (5.ed5 Qd5 6.a3 Nf6 7.Nc3=) 5...Qe7 6.Bc3 de4 7.Qe2 =.

4.e4 e6 5.Qe2 (5.ed5 Qh4 6.g3 Qb4 7.Bc3=+; 5.Nh3 e5 6.Nf2 d4 7.c3=) 5...de4 6.fe4 Nc6 7.a3 =.

4.e4 Nf6 5.e5 Nfd7 6.e6 fe6 7.f4 =.

4.a3 A) 4...Nf6 5.e3 e6 6.f4 Be7 7.Nf3=; B) 4...a5 5.e4 de4 6.fe4 ab4 7.ab4=; C) 4...Bf5 5.c4 dc4 6.e4 Be6 7.Qc2=; D) 4...Nc6 5.e3 a6 6.f4 Nf6 7.Nf3=; E) 4...e6 5.f4 Nf6 6.e3 Bd6 7.Nf3=.

4.e3=+ A) 4...Nf6 5.f4 e6 6.a3 Be7 7.Nf3=; B) 4...e6 5.f4 Nf6 6.a3 a5 7.b5=; C) 4...f6 5.f4 Bf5 6.a3 a5 7.Nf3=; D) 4...Nh6 5.f4 e6 6.Nf3 Nf5 7.Bd3=; E) 4...a6 5.f4 Nf6 6.Nf3 e6 7.a3=.

4.e4 A) 4...c6 5.Bc3 e6 6.Bd3 de4 7.fe4=; B) 4...Nf6 5.e5 Ng8 6.a3 e6 7.d4=; C) 4...a5 5.b5 e6 6.Qe2 Ne7 7.Nc3=; D) 4...de4 5.fe4 e5 6.Nf3 Bb4 7.Be5=.

4.f4 A) 4...e6 5.e3 Nf6 6.a3 c5 7.bc5=+; B) 4...a5 5.ba5 Ra5 6.Nf3 Nf6 7.e3=; C) 4...Bg4 5.h3 Bf5 6.e3 Qd6 7.Nc3=; D) 4...Nf6 5.a3 a5 6.e3 ab4 7.ab4=; E) 4...e5 5.Be5 Nc6 6.c3 f6 7.Bd4=+.

5.b5 a6 6.Nc3 ab5 7.ed5 b4 8.de6 Be6 9.Ne4 Nc6 10.Ne2 f5 11.Nf4 Bf7 12.Ng3 Nge7 13.Bb5 Qd6 14.Nd3 Ra5 15.Bc6 Nc6 16.0-0 Rg8 17.Nc1 g6 18.Qe2 Kd8 19.Nb3 Ra6 20.Rfe1 Kc8 21.c4 bc3 22.dc3 Qf4 23.Qf2 Bd6 24.Nd4 Rd8 25.Nc6 Rc6 26.Bc1 Qc4 27.Kh1 Qc3 28.Bg5 Bc5 29.Qf1 Rd7 30.Rad1 Rd1 31.Rd1 Bd6 32.Ne2 Qa5 33.Nd4 Rb6 34.a3 Qa4 35.Qe1 Rb2 36.Bf6 Ra2 37.Rb1 c6 38.Rd1 Qa3 39.Ne6 b5 40.Bg7 Rc2 41.Nd4 Rc4 42.Ne6 Be6 43.Qe6 Kc7 44.Qe1 Kb7 45.Ra1 Qd3 46.h3 Bc5 47.Qe8 Ra4 48.Rc1 Qd5 49.Bb2 Ra8 50.Qe1 Ra2 51.Qc3 Bd6 52.Re1 b4 53.Qg7 Ka6 54.Qh8 c5 55.Qc8 Kb5 56.Qe8 Qc6 57.Qe2 c4 58.Rb1 Bb8 59.Qe1 b3 60.Bc3 Qd6 61.Qg1 g5 62.Rf1?? Qd3 63.Bd4 c3 64.Bc3 Qc3 65.Rc1 Qc1! (66.Qc1 b2 67.Qf1 Kb6 68.Qf2 Kb7 69.Qb2 Rb2–+) 0–1. Pleschke,Helmut (1715) – Deidun,Joe (1940), IECG, 2000.

5.Nc3 d4 6.Nce2 e5 7.f4 =+.

5.ed5 Qh4 6.g3 Qb4 7.Be5 =+.

5.Qe2 Nf6 6.a3 de4 7.fe4 =.

5.g3 de4 6.fe4 Bc6 7.Bg2 –/+.

5.Nh3 e5 6.Nf2 de4 7.Ne4 =.

4.a3 A) 4...Nf6 5.e3 (5.g4 Bg6 6.e3 Qd6 7.c4=+) 5...e6 6.Ne2 Bd6 7.Nd4=; B) 4...d4 5.f4 a6 6.Nf3 Nc6 7.c3=; C) 4...Qd6 5.e3 (5.Nc3 Nf6 6.e4 de4 7.g4=+) 5...e5 6.c4 d4 7.c5=; D) 4...e6 5.c4 (5.f4 Nf6 6.Nf3 c5 7.bc5=+; 5.Nc3 d4 6.Nb5 e5 7.e4–/+; 5.e3 a5 6.Ne2 ab4 7.g4=+; 5.Ra2 a5 6.ba5 Bd6 7.e3–/+; 5.Kf2 a5 6.e3 ab4 7.g4–/+) 5...a5 6.cd5 ed5 7.Qa4=+.

4.c4 dc4 5.e4 (5.Na3 a5 6.Qa4 c6 7.b5=) 5...Be6 6.Na3 Qd6 7.Rb1=.

4.c4 c6 5.cd5 cd5 6.Qa4 Bd7 7.b5=.

4.c4 d4 5.Qa4 (5.e4 de3 6.de3 Qd1 7.Kd1=+; 5.e3 de3 6.de3 Qd1 7.Kd1=+; 5.a3 e5 6.e3 Nc6 7.b5=+; 5.f4 e5 6.Qa4 Nc6 7.Nf3=+) 5...Bd7 6.b5 e5 7.f4=+.

4.d3 e5 5.a3 (5.e4 Be6 (worse 5...Bb4 6.c3+-) 6.ed5 Bd5=+) 5...d4 (5...Nf6 6.e4 Be6 7.Be5=+) 6.c3 Nf6 7.cd4 ed4 8.Nd2 a5 (better 8...a6=+) 9.g4?? (9.Qa4 c6 10.g4–/+) 9...Ng4!–+ 10.Ne4 (10.fg4 Qh4) 10...Be4 11.de4 (11.fe4 ab4 12.Nf3 ba3–+) 11...Ne3 12.Qd3 (12.Qa4 Nc6 13.b5 Ne5–+) 12...Qh4 (12...ab4!? 13.Qb5 c6 14.Qe5 Be7 15.Kf2–+) 13.Kd2 Nc6 14.Qb5 (14.Bh3 Rd8 15.ba5 Be7–+) 14...ab4 (better 14...Qh6 15.f4 ab4–+) 15.a4 (15.Qb7 Nc4 16.Kd1 Nb2 17.Kc2 d3 18.ed3 b3 19.Kb2 Ba3 20.Ra3 Qf6 21.d4 (21.Kb3?? Ra3 22.Ka3 Qa1 23.Kb3 Qb1 24.Kc4 Qb7–+) 21...Qd4 22.Kb3 Ra3 23.Ka3 Qa1 24.Kb3 Qb1 25.Kc3 Qb7 26.h4 Qb4 27.Kc2–+) 15...b3! 16.Qb3 (16.Bd4 Nc2 17.Kc3 Na1 18.Kc4–+) 16...Bb4 17.Kd3 Ne5 18.Kd4 0-0-0 19.Ke3 (19.Qd5 Nc2 20.Ke5 Qg5) 19…Bd2 0–1. Uplander (1895) – michaelbuss (2860), ChessWorld.net, 2017.

4.e3 Qd6 5.Nc3 (5.a3 e5 6.c4 d4 7.c5=; 5.g4 Bg6 6.Nc3 e5 7.a3=+; 5.b5 e5 6.c4 d4 7.Ba3=+; 5.Bc3 e5 6.Ne2 Nf6 7.f4=+; 5.c3 e5 6.a3 a5 7.b5=+) 5...e5 6.a3 Nd7 7.e4 =.

4.e3 Nf6 5.g4 Bc8 6.a3 Nfd7 7.c4 =.

4.e3 Bg6 5.Ne2 (5.Nh3 e6 6.Nf4 Nf6 7.g4=) 5...Qd6 6.a3 e5 7.f4 =.

4.f4 e6 5.b5 Nf6 6.Nf3 c5 7.e3 Nbd7 8.Be2 h5 (8...Ne4 9.0-0= Be7 10.c4 dc4 11.Na3 c3 12.dc3 0-0; 8...Qa5 9.0-0 Qa4 10.c4 Qd1 11.Rd1 dc4 12.Na3 Bd3; 8...Be7 9.Nh4 Bg4 (9...0-0 10.0-0 Nb6 11.a4 h6 12.Nf5 ef5) 10.0-0 Be2 11.Qe2 Qa5 12.Nf3 Qb4; 8...h6 A) 9.0-0 Bd6 10.Nc3 0-0 11.Bd3 Bd3 12.cd3 Qa5; B) 9.Bd3 Bd6 (9...Bd3 10.cd3 Bd6 11.Nc3 0-0 12.0-0 Qa5) 10.Nc3 0-0 11.0-0 Bd3 12.cd3 Qa5; C) 9.c4 Bd6 10.cd5 ed5 11.Nc3 0-0 12.0-0 Nb6; D) 9.Nh4 Bh7 10.0-0 Bd6 11.Nc3 g5 12.Nf3 gf4; E) 9.Nc3 Bd6 10.0-0 0-0 11.Bd3 Bd3 12.cd3 Qa5) 9.0-0 (9.Nc3 Bd6 (9...h4 10.Bd3 d4 11.ed4 cd4 12.Na4 h3) 10.0-0 0-0 11.Bd3 Qb6 12.a4 Qc7; 9.Nh4 Bg4 10.0-0 Bd6 11.Nc3 d4 12.Nb1 Ne4; 9.Bd3 Bd3 10.cd3 Qb6 11.a4 Bd6 12.0-0 0-0; 9.Ng5 Bd6 (9...h4 10.0-0 Bd6 11.Nc3 c4 12.h3 Nc5) 10.0-0 h4 11.Nc3 c4 12.h3 Nc5) 9...h4 10.c4 (10.h3 Be7= (10...Nh5 11.Bd3 Bd3 12.cd3 Bd6) 11.Nc3 Rc8 12.Bd3 Ne4; 10.Ng5 Bd6 11.Nc3 c4 12.h3 Nc5) 10...dc4 (10...Be7 11.cd5 (11.h3 Qc7 12.Qb3 dc4) 11...ed5 (11...Nd5 12.Nc3 h3) 12.h3= Ne4; 10...h3 11.g3 Bd6 12.Nc3 dc4) 11.Na3 h3 12.g3 Bd3 (12...Be7 13.Nc4 0-0 14.d3=; 12...c3=+) 13.Nc4+= Nb6 (13...Be2 14.Qe2 Be7 15.a4+=) 14.Nce5 Be2 15.Qe2 Nfd7 16.Nf7 (better 16.d4+=) 16...Kf7=+ 17.Ng5 Kg8 (17...Ke7 18.f5 e5 19.d4=+) 18.Ne6 Qe7 19.f5 Rh6 (19...Re8 20.d3=+) 20.e4 (20.d4 Re8=+) 20...Re6 21.fe6 Qe6 22.d3 (22.a4 Re8 23.d3 c4–/+) 22...Bd6 (22...Na4 23.Ba3=+) 23.Rf5 (23.a4 Re8=) 23...Be5 24.Raf1? (24.a4 Rd8=+) 24...Bb2 (better 24...Qa2!? 25.R1f2 Bb2 26.Qb2 Qb2 27.Rb2 g6–+) 25.Qb2=+ Rf8 (25...c4=+) 26.a4 (better 26.Rf8!? Nf8 27.Qa3=) 26...Rf5–/+ (26...Na4?! 27.Rf8 Nf8 28.Qa3=) 27.Rf5 Na4 28.Qa1 (28.Qa3 Ndb6 29.Qa1–+) 28...Nab6 (28...Qb3!?–/+) 29.Qa7=+ Qb3 30.Qa1? (better 30.Qb7 g6 31.Rf1=) 30...Qd3–+ (30...Qb5 31.Rg5 Kf8 32.Qg7 Ke8 33.Qh8 Ke7 34.Rg7 Kd6 35.Qh6 Ke5 36.Qf4 Kd4 37.e5 Kc3 38.Qc1 Kd4 39.e6+-) 31.Qa2 (better 31.Qf1 Qe4 32.Qh3–+) 31…c4 0–1. Tirado Parra,Alberto (1905) – Tiwari,Ashwani (2065), 8th CSC London Chess Classic, 2016.

4.f4 Nf6 5.Nf3 e6 6.e3 (6.a3 c5=+) 6...Bb4–/+ 7.Be2 (7.Bb5 Nc6–/+) 7…0-0 0–1. craig4000 – michaelbuss (2865), ChessWorld.net, 2017.

4.g4 Bc8 A) 5.Nh3 e5 (5...f6 6.a3 e5 7.e3 a5 8.b5 Bd6 9.c4 Ne7 10.d4 ed4 11.Bd4=; 5...Nd7 6.Nc3 Nb6 7.e3 e5 8.a3 h5 9.Nf2 hg4 10.fg4 a5 11.Be2=+) 6.Be5 h5 7.Nf2 f6 8.Bd4 hg4 9.c3 gf3 10.ef3 Bd6 11.Bb5=+; B) 5.a3 Nd7 6.e3 e5 7.Nh3 Qh4 8.Nf2 a5 9.b5 h5 10.h3 Qg3 11.gh5=+; C) 5.e3 Nd7 6.Nc3 Nb6 7.a3 e5 8.Nh3 a5 9.Nf2 ab4 10.ab4 Bb4 11.Ra8=+.

4.Nh3 Bh3 5.d4? (better is 5.gh3 e6 6.Qc1–+) 5...Bc8 6.Nc3 e6 7.Ba3 (7.a3 Bd6 8.Nb5 Bf4–+) 7...a5 8.e3 (8.Rb1 Nc6 9.b5 Qh4 10.g3 Qd4 11.Nd5 ed5 12.Bf8 Kf8 13.bc6 Qc3 14.Qd2 Qc6 15.c4–+) 8...ab4 9.Bb4 (9.Bb2 bc3 10.Bc3–+) 9...Bb4 10.Bd3 Bc3 (11.Kf2 Ba1 12.Qa1 Nc6–+) 0–1. alarconconsult – pierre (2140), internet, 2007.

5.ba5 e6 6.e3 Ra5 7.Ne2 =+.

5.b5 e6 6.g3 Nf6 7.Bh3 =+.

5.Nc3 d4 6.Ne4 e5 7.Ng3 =+.

5.e3 e5 =+.

5.e3 e6 6.Ne2 ab4 7.g4 =+.

5.e4 de4–/+ 6.Nc3 Nf6 7.g4 Bg6 8.g5 Nd5 9.Ne4 h6 10.gh6 Rh6 11.Ne2 e6 12.N2g3 Nd7 13.c4 Nf4 14.c5 Qh4 15.Nf2 Rh7 16.Rc1 c6 17.Qb3 Be7 18.Ng4 Nh5 19.Rg1 ab4 20.ab4 Bg5 21.Rc4 Nf4 22.b5 Bf5 23.h3 Bg4 24.fg4 Nd5 25.Kd1 Kf8 26.Ne4 Rd8–+ 27.Bd4 Bf4 28.Ra4 Bh2 29.Rh1 Bb8 30.bc6 bc6 31.Bd3 Be5 32.Bf2 Qe7–+ 33.Qa3 Rh8 34.Bc2 N7f6 35.Nd6–/+ Ne8 36.Ra7 Ndc7 37.Rb7 Nd6 38.cd6 Bd6 39.Qf3 Kg8 40.Rf1 Rd7?? 41.Qc6= Rh3 42.Rh1 Rh1 43.Qh1 g6 44.Bh4 f6 45.Rb8 Ne8 46.Rc8 Bc7 47.Qa8 Rd8 48.Rd8= Bd8 49.Bg6 Nc7 50.Qc6 Qb4 51.Be4 Kf7 52.Bf2 Be7 53.Ke1 Nb5 54.Qc2 Nd6 55.Bf3 Kg7 56.Qc6 ½–½. Kelish (1975) – pierre (2095), internet, 2006.

5.f4 e6 6.ba5 Nf6 7.e3 =+.

5.g4 Bg6 6.e3 e6 7.h4 =+.

5.a3 a5 6.cd5 ed5 7.Qa4=+.

5.Na3 Nd7 6.e3 Ngf6 7.cd5=+.

5.Qa4 c6 6.cd5 ed5 7.b5=+.

5.Qb3 Nc6 6.a3 Nf6 7.cd5=+.

5.Nc3 d4 6.Nb1-/+.

5.Nc3 Nf6 6.Qb3 (6.cd5 ed5 (worse 6...Nd5 7.e4 Nc3 8.dc3 Qd1 9.Rd1+=) 7.Qa4 c6=+) 6...c6 (6...Nc6 7.g4 Bg6 8.cd5 ed5 9.a3-/+) 7.Rc1 Nbd7 8.d3 (8.e3 a5 9.b5 Be7=+) 8...d4 9.Nd1 e5 10.e4 de3 11.Ne3 Be6 12.Ne2 (12.d4 a5 13.de5 Bb4 14.Kf2 Nh5=+) 12...Qb6 13.Nc2 a5 14.a3 ab4 15.ab4 Nc5! 16.Qc3 (16.bc5 Qa5 Double attack (16...Qb3 Pinning; 16...Qb3 Deflection; 16...Qa5 Decoy)) 16...Na4 17.Qb3 Nb2 18.Qb2 Be7 (18...Nd7 19.f4 Bd6 20.d4 ed4 21.Ned4 Bf4 22.Ne6 Bc1 23.Qg7=+) 19.Qe5=+ 0-0 (19...Bb4 20.Nb4 Qb4 21.Nc3-/+) 20.Nc3 (20.c5 Qd8=+) 20...Bb4 (20...Nd7!? 21.Qf4 Bb4 22.Nb4 Qb4-/+) 21.Nb4=+ Qb4 22.Rb1 Qa3 23.Be2?? (better 23.Ne4 Ne4 24.fe4=+) 23...Nd7-+ 24.Qd4 c5 25.Nb5 cd4 26.Na3 Ra3 27.Rb7 (27.g4 Nc5 28.0-0 Nd3 29.Bd3 Rd3-+) 27...Nc5 (27...Ra1 28.Bd1 Nc5 29.Rc7 Nd3 30.Kd2-+) 28.Rc7 (28.Rb1 Nd3 29.Bd3 Rd3-+) 28...Nd3 29.Bd3 Rd3 (better 29...Ra1 30.Kf2 Rh1 31.c5-+) 30.Ke2 0-1. pacal56 (2205) - uoylliki (2245), Rated Blitz game, lichess.org, 2015.

5.cd5 ed5 6.Qa4 c6 7.b5=+.

5.e3 Nf6 6.c5 Nbd7 7.d3=+.

5.Qd2 e5 6.g4 Be6–/+ 7.Bh3 Qh4 8.Kd1–/+ Ne7 9.Bg2? Nd5–+ 10.a3 Ne3 (11.Kc1 Ng2–+) 0–1. eduardobandeira (2100) – pierred (2595), net–chess.com, 2008.

5.f4 e5 6.e4 de3–/+ 7.Be5 Bb4 8.c3 f6 9.cb4 fe5–+ 10.a3 ef4 11.Qf3 Qd4 12.Ra2 Nc6 13.Ne2 Qd3 14.Rb2 0-0-0 15.Nec3 Qd4 16.Ra2 Bb1 17.Nb1 Ne5 (18.Qh3 Kb8–+) 0–1. golly1 – marekt, ChessWorld.net, 2007.

5.a3 e5 6.d4 Bd6 7.c4 =+.

5.Nc3 e5 6.Nd5 c6 7.e4 =+.

5.Nc3 e6 6.Nge2 Ngf6 7.Ng3 Bg6 8.Be2 Bb4–/+ 9.0-0 c6 10.d3 Qa5–+ 11.Nb1 h5 12.c3 Bd6–+ 13.Nd2? Qb6 14.Rb1 Bd3!! 15.Ba3 Qe3 (16.Rf2 Bg3 17.hg3 Bb1 18.Nb1 h4 19.gh4 Qf4–+) 0–1. kehrsam – michaelbuss, ChessWorld.net, 2007.

5.c4 e6 6.cd5 ed5 7.b5 Qh4 8.g3 Qh6 9.Be2 (9.Nc3 Ngf6+=) 9...Bc5 10.f4 Ngf6 11.Bf6 (better is 11.Nf3!?–/+) 11...Qf6–+ (11...gf6?! 12.Nf3 0-0-0 13.Nc3=) 12.Nc3 d4 13.ed4? (better is 13.Nd5 Qd6 14.Bf3–+) 13...Qd4 14.Qa4 (14.Qb3 Be4 15.Ne4 Qa1 16.Bd1–+) 14...Qf2 15.Kd1 Qg2 16.Bc4 (16.Kc1 Qh1 17.Kb2–+) 16...Nb6 17.Kc1 Na4 (17...Na4 18.Na4 0-0-0 19.Be2 Ba3 20.Kd1 Qh1 21.d3 Qg1 22.Kc2 Qa1 23.Kb3 Be6 24.Ka3 Rd4 25.Nb6 ab6 26.Bf3 Qa2#) 0–1. Hasler,Ueli (1710) – Buettner,Fritz (2445), CiF, 2006.

5.Qe2 e5 6.a3 Bc2 7.Qb5 =+.

5.Ne2 e5 6.Nbc3 Ngf6 7.a3 =+.

5.f4 e5 6.a3 ef4 7.ef4 =+.

5.g4 Bg6 6.h4 h5 7.g5 =+.

5.a3 a5 6.ba5 Ra5 7.Nc3 Nf6 8.d4 c5 9.Bb5 Nc6 10.Bc6 bc6 11.g4 cd4 12.ed4 Bg6 13.Nge2 Bd6 14.h4 Qb8 15.Rb1 h5 16.g5 Nd7 17.Qc1 Qa7 18.Ra1 e5 19.Nb1 0-0 20.Bc3 Ra4 21.de5 Ne5 22.Be5 Be5 23.Ra2 Re8 24.Kf1 Qa6 25.c3 Bf4 26.Qd1 Bb1 27.Qb1 Ra3 28.Rc2 Ra1 29.Qa1 Qa1 30.Kg2 Qa4 31.Rb2 Bc7 32.Rh3 Qa1 33.Rc2 Qb1 34.Nd4 Re1 (35.Re2 Rg1 36.Kf2 Bf4 37.Re8 Kh7 38.g6 fg6 39.Rh8 Kh8 40.Nc6 Qe1) 0–1. Bestia – Quark, computer chess game, 2001.

5.a3 a5 6.b5 Nd7 7.Ne2 Ngf6 8.Nd4 (8.g4 Bg6=) 8...Bg6+= 9.f4 c5 (9...Nb6 10.Ra2+=) 10.bc6 bc6 11.Nc6 Qb6 12.Bf6 gf6 (12...Nf6 13.Nc3+=) 13.Nd4+= e5 14.Nb5 Rc8 Black prepares d4 15.N1c3 d4 16.Nd5 Qc5 (16...Qd8 17.c4 d3 18.Qa4+-) 17.c4 Bh6? (better is 17...de3!? 18.de3 Be4+/–) 18.f5! (18.f5 Bf5 19.ed4 ed4 20.Qh5+/–) 1–0. pcmvr – jvanmechelen (2565), net–chess.com, 2016.

5.a3 a5 6.c3 Nh6 (6...Bd6 7.Ne2 Nf6=+) 7.c4 (7.Ne2!?=+) 7...dc4 (better is 7...ab4 8.c5 Nc6–/+) 8.Bc4?? (better is 8.ba5 Nc6 9.d4–/+) 8...Qh4–+ 9.g3 Qc4 10.Nc3 Nc6 11.e4 Ne5 12.Rb1 Nd3 13.Kf1 Nb2 14.Qe2 ab4 15.Rb2 Qe2 16.Nce2 ba3 17.Ra2 Bg6 18.Nh3 e5 19.Kg2 f5 20.Nc3 Bf7 21.Raa1 0-0-0 22.Nd5 fe4 23.fe4 Rd5 24.ed5 Bd5 25.Kf2 Bc5 26.Ke2 Bh1 27.Rh1 Bd4 28.Ng5 Bb2 (29.Ne6 a2–+) 0–1. yulio – pierred, ChessWorld.net, 2006.

5.a3 a5 6.Ne2 ab4 7.g4 =+.

5.Bc3 Nd7 6.Ne2 e5 7.Ng3 =+.

5.Nc3 Nd7 6.g4 (6.a3!?=) 6...Qh4 (6...Bg6 7.a3=+) 7.Ke2 Bg6 8.Qe1 (8.a3 0-0-0–/+) 8...Qe7=+ 9.a3 h5 10.h3 (10.Qg3 0-0-0=+ (10...Bc2?! 11.Nb5 Rb8 12.Qc7=)) 10...hg4–/+ 11.fg4 (11.Nb5 gf3 12.Nf3 Kd8–/+) 11...Ne5 12.d3 (12.Qg3 Ng4 13.Nf3 N8f6–/+) 12...Ng4–+ 13.Bg2 N4f6 14.Nf3 Nh6 (14...0-0-0 15.Kd1–+) 15.Ne5 (15.Kd2 0-0-0–/+) 15...Bh5 16.Kd2 c5 17.bc5 Qc5 18.Rf1 (18.Ne2 Qa5 19.Kd1 Qc7–+) 18…Nf5 (19.e4 de4 20.Ne4 Ne4 21.Qe4 Rc8–+; 18...Bd6 19.Qg3 Nf5 20.Rf5 ef5 21.d4–+) 0–1. composite – marekt, ChessWorld.net, 2008.

5.Nc3 Qh4 6.g3 Qb4 7.Rb1 =+.

5.c4 Bb4?? 6.Bg7 dc4 7.Bh8 +-.

5.c4 Nf6 6.a3 a5 =+.

5.c4 Nf6 6.b5 Nbd7 (6...Bd6 7.d3=+) 7.cd5 (7.Nc3 Bd6=+) 7...ed5 8.d4 (8.Nc3 Nc5=+) 8...Bd6 (8...Bb4 9.Kf2–/+) 9.Bd3=+ Bg6 (9...Bd3 10.Qd3 Nb6 11.e4=+) 10.Ba3 Qe7 11.Bd6 Qd6 (11...Qe3 12.Qe2 Qe2 13.Ke2 cd6 14.Bg6 hg6 15.Kd3=+) 12.Nh3 (12.Ne2 0-0-0=+) 12...Qe7 13.Qd2 (13.Kf2 0-0=+) 13...Nb6 (13...Bd3 14.Qd3 a6 15.ba6 Ra6 16.0-0=+) 14.0-0= 0-0 15.Re1 (15.Nc3 Bd3 16.Qd3 a6=) 15...Rfe8 (15...Bd3 16.Qd3 a6 17.ba6 Ra6 18.e4=+) 16.Nc3 (16.Bg6 Nc4 17.Qd3 hg6=) 16...Qd7 (16...Bd3 17.Qd3 a6 18.e4=+) 17.Nf4 (17.Bg6 fg6 18.e4 de4 19.fe4 Nc4=) 17...Bd3 18.Qd3 Rac8 (18...a6 19.a4=) 19.a4 (19.e4 de4 20.fe4 c5 21.bc6 Rc6=) 19...c6 20.bc6 Rc6 21.e4 de4 (21...Rec8 22.Ncd5 Nbd5 23.Nd5 Nd5 24.ed5 Qd5 25.Re5 Rc1 26.Rc1 Rc1 27.Kf2=) 22.Ne4 Ne4 23.fe4 Qg4 24.Qf3 Qf3 25.gf3 Rc3 26.Kf2+= Rc4 27.a5+/– Na4 28.Red1 Rd8 29.Nd5+/– Nc3? 30.Nc3 Rc3+/– 31.Rd2 Rd6 32.e5 Rh6 33.Kg2 Rg6 34.Kf2 Rh6 35.Rh1 Rh3 36.Kg2 Rhf3 37.Rb1 b6 38.ab6 ab6 39.Rb6 g6 40.Rd6 Rfd3 41.Rd3 Rd3+= 42.Rd8 Kg7 43.d5 Kh6 44.d6 Kg7 45.Kf2 h6 46.Ke2 Rd5= 47.Re8 Rd4 48.Ke3+/– Rd5 49.Ke4 Rd2 50.Rb8 Rd1 51.Rb3 Kf8 52.Rb8 Kg7 53.Rb4 Kf8 54.Rd4 Rd4 55.Kd4 Ke8 56.h4 Kd7= 57.Kd5 g5 58.hg5 hg5 59.Ke4 g4 60.Kf4 g3 61.Kg3 Ke6 62.Kf4 f6 63.ef6 Kf6 ½–½. Zielke,Bernd (1640) – Lohrie,Christian, It (open) Kiel (Germany), 2006.

5.c4 Nf6 6.c5 Nbd7 7.d3 =+.

5.Bd3 Bd3–/+ 6.cd3 Qh4 7.g3 Qb4 8.Ba3 Qa5 9.Bf8 Kf8 10.Nc3 c6 11.Qb3 b6 12.Nge2 Nd7 13.d4 Ngf6 14.g4 g6 15.Kf2 h5 16.g5=+ Ne8 17.Rhc1 c5 18.Rab1 Nd6 19.d3 c4 20.Qc2 Kg7–/+ 21.a3 Rac8 22.Rb4 Qa6 23.Ra4–/+ Qb7 24.e4 Rhe8 25.e5 cd3 26.Qd3–/+ Nc4 27.Nf4 Nb2 28.Qc2? Na4–+ (29.Qa4 b5–+) 0–1. Burns,Chris J – Lukey,Stephen G (2220), ch–NZL Wanganui NZL, 2003.

5.Bd4 Nf6 6.c3 Bd6 7.Qa4 –/+.

5.Ne2 Nf6 6.Nbc3 (6.g4!? Bg6 7.Nf4=) 6...Bb4–/+ 7.Ng3 (7.g4 Bg6–/+) 7...Bg6 8.Be2 (8.Rb1 0-0–/+) 8...0-0 9.0-0 (9.Rb1 Nc6–/+) 9...Nc6 10.d4 (10.a3 Bd6–/+) 10...Bd6–+ 11.a4 (11.f4 a6–/+) 11...Bg3 12.hg3 Nb4 13.Rc1 Nh5 14.Kf2 (14.Qe1 Nc2 15.Qf2 Nf6–+) 14...Qg5 15.g4 (15.Ba3 c5–+) 15...Qh4 16.Kg1 Ng3 17.Re1 f5 (17...Qh1 18.Kf2 Qh2 19.Ba3–+) 18.Ba3 c5 (better is 18...fg4 19.Bb4 Ne2 20.Ne2 gf3 21.Bf8 f2 22.Kf1 Rf8–+) 19.dc5? (19.g5–+) 19...fg4 (19...Ne2?! 20.Re2 fg4 21.Qd4–+) 20.Bb4 Qh1 (better is 20...Ne2 21.Ne2 gf3–+) 21.Kf2 Qh2 22.c6 (22.f4 Be4 23.Rf1 Qg2 24.Ke1–+) 22...Ne2 23.Re2 gf3 24.Bf8 fg2 (24...fe2?! 25.Ne2 Rf8 26.Nf4 bc6 27.Qg4–+; 24...Qg2?! 25.Ke1 fe2 26.Qe2 Qg3 27.Kd2 Rf8 28.cb7–/+) 25.Qg1 (25.Ke1 g1Q 26.Kd2 Qd1 27.Nd1–+) 25…Rf8 (26.Ke1 Qg1 27.Kd2 Qc1 28.Kc1 g1Q 29.Kd2 d4 30.cb7 dc3 31.Kc3 Qa1 32.Kb3 Rb8 33.Kb4 Rb7 34.Kc5 Qe5 35.Kc4 Qe4 36.Kc5 Qd5) 0–1. kehrsam – marekt, ChessWorld.net, 2007.

5.Ne2 Qh4 6.Ng3 =+.

5.f4 Nf6 6.a3 Bd6 7.Nf3 =+.

5.g3 Nd7 6.Ne2=+.

5.g3 h5 6.a3= Nf6 7.Bg2 a5 8.d3 (8.b5!?=+) 8...ab4-/+ 9.a4 (9.e4 Bg6-/+) 9...Nc6 10.Ne2 Bd6 11.0-0 h4 12.g4 (12.Nd2 hg3 13.Ng3 d4-+) 12...h3 13.Bh1 Bg4! 14.Bf6? (14.fg4 Bh2 Demolition of pawn structure) 14...Qf6 15.Nd2 Bh5 16.Rf2 (16.Ng3 Be5 17.Ra2 d4-+) 16...Qg5 17.Kf1 Qe3 18.f4 (18.Nb3-+) 18...Nd4 19.Nf3 (19.f5 Ne2 20.Re2 Qf4 21.Rf2 Bd1 22.Rf4 Bc2-+) 19...Bf3 20.Bf3 Nf3 21.Ng3 (21.d4-+) 21...Nh2! 22.Rh2 Decoy to h2 22...Qg3 (22...Qg3 23.Qd2 Bf4-+) 0-1. Delboy Smith (1770) - bulent_2010 (2695), ChessWorld.net, 2015.

5.h4 h5 6.a3 Nf6 7.Ne2 =+.

5.Nc3 ef3 6.Qf3=+ Bc8 (6...Bc2 7.Rc1 c6 8.Rc2+-) 7.Bd3 (7.Bb5 c6 8.Bc4 Nf6=+) 7...Nc6 8.Qg3 Qd6 (8...Nb4 9.Nb5 Nd3 10.cd3=) 9.Qd6=+ ed6 10.Nd5 Kd8 11.Ne2 (11.Be4 Ne5–/+) 11...Be6 12.Be4 (12.Nef4 Nge7 13.Ne6 fe6–/+) 12...Bd5 13.Bd5 Nb4 14.Bb3 f6 15.0-0 (15.a3 Na6–/+) 15...Kd7 (15...c6 16.a3 Na6 17.c4–/+) 16.Rae1 Re8 (16...c6 17.a3 Na6 18.c4–/+) 17.a3 Nc6 (17...Na6 18.Nd4–/+) 18.Nf4 Nce7 (18...Re1 19.Re1 Nd8 20.Bd4–/+) 19.Be6=+ Kc6 20.Re3 (20.Bd5 Kb6=) 20...b6 (20...Rb8 21.Rfe1=+) 21.Bb3 (21.Nd5!=) 21...Rc8 (21...Kb7 22.Bf7 Rb8 23.Rfe1=+) 22.Rfe1 Kb7 23.Ne6 Ng6 24.d4 Nh6 25.R3e2 (25.d5 a6=) 25...Nf5 (25...c6 26.d5=+) 26.c3 (26.c4 c5=+) 26...c6 27.c4 c5 28.d5 Ne5 29.Bc2 (29.Re4 Nd3 30.R1e2 Nb2 31.Rb2 g6=+) 29...Nd4–/+ 30.Nd4 cd4 31.Bd4 Rc4 32.Be3 (32.Bb2 Be7–/+) 32...g6–+ 33.Bb3 Rc3 34.Rb1 Be7 35.Bd4 (35.Bd2 Rc7–+) 35...Rd3 36.Be3 Rc8 37.Bd2 Rc7 (38.Kf1 f5–+) 0–1. Woschkat,Karl_Heinz (2185) – Buettner,Fritz (2285), internet, 1997.

5.Nc3 Nf6 6.Qe2 ef3 7.Qf3 Qc8 (< 7...Bc2 8.Rc1 Nc6 9.Bb5+/– (9.Rc2?! Nd4 10.Qd3 Nc2 11.Qc2 a5=)) 8.b5 a6 9.Bd3 Bd3 10.Qd3 ab5 11.Nb5 c6 12.Bf6 gf6 13.Nc3 Rg8 14.g3 f5 15.Nge2 b5 16.0-0 e6 17.Qe3 Be7 18.a4 b4 19.Nd1 h5 20.Nb2 Nd7 21.Nc4 (21.Rf3 h4–/+) 21...Qa6–+ 22.Qb3 h4 23.a5 hg3 24.hg3 Ne5 25.Ne5 Qe2 26.d4 Qe4 27.Qd3 c5 28.Qe4 fe4 29.Rf7 (29.Kg2 cd4 30.Nc6 e5 31.Ne5 Rc8–+) 29...cd4 30.Rh7 Rg3 31.Kh1 (better is 31.Kf2 Rc3 32.Rh8 Bf8 33.Ng6–+) 31...Bf6 32.Nc4 d3 33.Rc1 Ra6 34.cd3 ed3 35.Rf1 Bg7 36.Rd1 Bc3 37.Kh2 Rg4 38.Ne3 Rd4 39.Rg1 Rf4 40.Rg8 Rf8 41.Rg5 Rf7 42.Rf7 Kf7 43.Rb5 Bd4 44.Nf1 e5 45.Rb4 Ra5 46.Rb3 e4 47.Kg3 Rf5 48.Nd2 e3 49.Rd3 e2 50.Nf3 Rf3! 51.Kf3 e1Q 52.Rd4 Qc3 53.Ke4 Ke6 54.Rd3 Qb4 55.Rd4 Qe1 56.Kd3 Ke5 57.Rc4 Qd1 58.Kc3 Kd5 59.Rb4 Qc1 60.Kb3 Kc5 61.Ka2 Qc2 62.Ka1 Qd1 63.Rb1 Qd4 64.Ka2 Kc4 65.Rc1 Kb4 66.Rc2 Qe5 67.Rf2 Qd5 68.Kb1 Qd3 (69.Ka2 Qc4 70.Kb1 Qd4–+) 0–1. Crapov – marekt, ChessWorld.net, 2004.

5.Nc3 Nf6 6.Qe2 ef3 7.Qf3 Qc8 8.b5 a6 9.Bd3 Bd3 10.Qd3 c6 11.ba6 Na6 12.a3 Nc5 13.Qg3 Qf5 14.d3 Ncd7 15.Nf3 Qc5 16.0-0-0 (16.Nd2 e6–/+) 16...Qa5 17.Nd2 b5 18.Nb3 Qa7 19.Kb1 (19...e6 20.Ne4–+). Crapov – hooks, ChessWorld.net, 2006.

5.Nc3 Nf6 6.fe4 Ne4 7.Bd3 Nc3 8.dc3 Bd3 9.cd3 e6 (9...Nc6 10.Nh3–/+) 10.Nf3 Bd6 11.0-0 0-0 12.Qd2 (12.Qe2 c5–/+) 12...Qe7 (12...c5 13.bc5 Bc5 14.d4–/+) 13.a3 (13.Qe3 c5–/+) 13...a5 (13...c5 14.Qe3–/+) 14.Rae1 (14.Qe2 Rd8–/+) 14...Nd7–/+ 15.Re4 (15.Bc1 Nf6–/+) 15...Nb6 (15...Nf6 16.Ree1–/+) 16.Nd4 (16.Rg4 f5 17.Rg5 Nd5–/+) 16...Qd7 (16...ab4 17.ab4 Ra2 18.Ra1–/+) 17.Nf3 (17.Bc1 ab4 18.ab4 Nd5–/+) 17...ab4 18.cb4 Nd5 19.Ng5 h6 20.Nf3 f6 (20...Rfd8 21.Qf2–/+) 21.Qc2 (21.Nd4 Rfe8–/+) 21...Rae8 (21...Rfe8 22.Rfe1–/+) 22.Ree1 (22.Rfe1 b5–/+) 22...c6 (22...b5 23.Nd4–/+) 23.Kh1 (23.Re4 Ra8–/+) 23...Rf7 (23...Bf4 24.Bd4–/+) 24.Nd2 (24.Qe2 Bf4–/+) 24...e5 (24...Qc7 25.Nf3–/+) 25.Nf3 (25.Ne4 Rd8–/+) 25...Nf4 (25...Rfe7 26.Nh4–/+) 26.Bc1 Ne6 27.Be3 Bf8 (27...c5 28.Qb3–/+) 28.Rd1 Qd5 29.Nh4 (29.Kg1 Ra8 30.Qb2 c5–/+) 29...Rd8 (29...Ra8 30.Qb2–/+) 30.Nf5 Ra8 31.Bc1 (31.Qb2 c5 32.bc5 Bc5 33.Bc5 Qc5–/+) 31...c5 32.Qe2 Nd4 33.Nd4 ed4 (33...Qd4 34.Be3 Qd5 35.Qh5–+) 34.bc5 Bc5 35.Bb2 Re7 (35...Ba3?! 36.Ra1 Qd6 37.Qe4–/+) 36.Qg4 h5 (36...Qe6 37.Qg3–+) 37.Qf5 (37.Qh3 Ba3 38.Ba3 Ra3–+) 37...Re5 (37...Qf5 38.Rf5 Re2 39.Rb1–+) 38.Qf2–/+ Rae8 39.Rd2 Rf5! 40.Qg1 (40.Qf5 Qf5 Combination) 40...h4 (40...Rf1 41.Qf1 Qe5 42.Rc2–/+) 41.Rdf2–+ Rg5 (41...Rf2 42.Rf2 Re3 43.Qd1–+) 42.Bc1–/+ Re3! 43.Be3 (43.Rd1–+) 43...de3 44.Re2 h3 (44...Qd3?! 45.Rfe1 h3 46.Re3–+) 45.Rfe1 hg2 46.Qg2 (46.Rg2 e2 47.Ree2 Bg1 48.Kg1 Qd4 49.Kf1–+; 46.Rg2 e2 47.h4 Rg4 48.Ree2 Bg1 49.Kg1 Rg2 50.Rg2 Qd3–+) 46...Rg2 47.Rg2 Qf3 48.d4 (48.a4 e2 49.a5 Qf1 50.Rg1 Bg1 51.Rf1 ef1Q 52.h3 Bd4 53.Kh2 Be5) 48...Bd4 49.h4 (49.h3 e2 50.Kh2 Be5 51.Kg1 Qe3 52.Kh1 Qh3 53.Kg1 Bd4 54.Rf2 Qg3 55.Kh1 Bf2 56.Re2 Qh3; 49.Kg1 e2 50.Kh1 Qf1 51.Rg1 Bg1 52.Rf1 ef1Q 53.h4 Bd4 54.Kh2 Be5) 49...e2 50.Kh2 0–1. condoru (2060) – marekt (2175), gameknot.com, 2015.

5.Nc3 Nf6 6.fe4 Ne4 7.Nf3 Nf6 8.Bc4 e6 9.a3 c5 10.bc5 Bc5 11.d4 Be7 12.Bd3 Bg6 13.0-0 Nc6 14.Bg6 hg6 (< 14...fg6 15.Qd3=+) 15.Rb1 g5! 16.h3 (16.Ng5 Nd4) 16...g4 17.hg4 Ng4 18.Qd3 Qc7 19.Nb5 Qg3 20.Rbe1 0-0-0 21.Qd2 (21.Qc3 Rh2! 22.Na7 Kc7 23.Nb5 Kb6 24.Qc5 Bc5 25.dc5 Kc5 26.Re5 Nce5 27.Bd4 Rd4 28.Ne1 Qe3 29.Rf2 Qf2) 21…Rh3 (22.Rf2 Nf2 23.Qf2 Rh1 24.Kh1 Qf2–+) 0–1. stormytlc – michaelbuss, ChessWorld.net, 2009.

5.Nc3 Nf6 6.g4 Bg6 7.g5 –/+.

5.fe4 Be4 6.Nc3 Bg6 –/+.

5.a3 Nc6 6.Nh3 e5 7.b5 =+.

5.e3 e5 6.Be5 Nc6 7.Bg3 Bb4 8.a3 Ba5 9.c3 Bb6 10.Nh3 Nf6 11.Nf4 =+.

5.e3 e6 6.h4 f6 7.a3 Bd6 8.f4 e5 9.g5 ef4 10.Qh5 Ke7 11.ef4 =+.

5.e3 f6 6.c4 e6 7.Qb3 Nc6 8.a3 Nge7 9.d4 a5 10.b5 a4 11.Qc2 =.

5.Bg2 Nc6 6.b5 Na5 7.Bd4 –/+.

5.g5 e6 6.f4 f6 7.Nf3 –/+.

5.Nh3 e6 6.Nf2 Nf6 7.e3 =+.

5.h4 Bc6 6.a3 Qd6 7.Nh3 =+.

5.a3 Nd7 6.h4 h5 7.g5 =+.

5.Qc1 e5 6.Be5 Nc6 7.Bg3 –/+.

5.c4 dc4 6.e4 e5 7.Bc4 =+.

5.e3 Qd6 6.Nc3 e5 7.a3 Nc6 8.Nge2 0-0-0 9.Bg2 Qe6 10.h4 h5 11.g5 =+.

5.e3 Nd7 6.h4 h5 7.g5 e5 8.Nc3 Nb6 9.a3 a5 10.b5 Bc5 11.Bd3 =+.

5.e3 e6 6.h4 h5 7.g5 =+.

5.Bg2 e5 6.h4 h5 7.g5 Nc6 8.a3 Qd6 9.Nc3 0-0-0 10.f4 Nd4 11.d3 =+.

5.Bg2 e6 6.d3 h5 7.h3 Bb4 8.c3 Bc5 9.d4 Bd6 10.Nd2 Nc6 11.e4 hg4 12.hg4?? Rh1 13.Bh1 Qh4 (14.Kf1 Qh1–+) 0–1. pituflu – pierre (2120), internet, 2007.

5.Bg2 e6 6.f4? Qh4–+ 7.Kf1 Qg4 8.c4 Qf4 9.Bf3 Qc4 10.h4 Nf6 11.Qa4 Nc6 12.Rh3 Bf5 13.Rg3 Qh4 14.Rh3 Bh3 15.Nh3 Qh3 16.Bg2 Qf5 17.Ke1 Qg5 18.Bf3 Qg1# 0–1. opponent – pierre, internet, 2008.

5.Bg2 e6 6.Nh3–/+ Qh4 7.Nf2 Nf6 8.Be5 Bd6 9.Bd6 cd6 10.Na3 a6 11.c3 –/+.

5.Nh3 e5 6.Be5 Nc6 7.Bg3 =+.

5.h4 Qd6 6.e3 Qb4 7.h5 =+.

4.a3 A) 4...e6 5.Nh3 (5.e3 Nf6 6.Ne2 Bd6 7.Nbc3=; 5.Nc3 d4 6.Na2 Bg6 7.c3=) 5...Nf6 6.e3 Bd6 7.Nc3=; B) 4...Nd7 5.Nc3 (5.c4 dc4 6.e4 b5 7.Nc3=+; 5.e3 e5 6.Nc3 Nb6 7.Nce2=+) 5...d4 6.Ne4 e5 7.e3=; C) 4...Bg6 5.e3 (5.Nh3 d4 6.c3 e5 7.cd4=; 5.f4 Nf6 6.e3 e6 7.Nf3=; 5.c4 e6 6.cd5 ed5 7.e3=+; 5.d3 a5 6.e4 ab4 7.ab4=+; 5.Ra2 Nd7 6.f4 Ngf6 7.Nf3=+) 5...Nd7 6.f4 Ngf6 7.Nf3=; D) 4...Qd6 5.e3 (5.Nc3 Nf6 6.g4 Bg6 7.e3=+; 5.c4 dc4 6.e4 b5 7.d3=; 5.d4 Nf6 6.e3 a5 7.b5=; 5.Nh3 e5 6.e3 Nd7 7.d4=; 5.e4 de4 6.Nc3 ef3 7.Nf3=+) 5...e5 6.c4 Nf6 7.cd5=; E) 4...Nf6 5.e3 (5.Bf6 ef6 6.e3 Bd6 7.Nc3=+; 5.c4 e6 6.e3 Bg6 7.Nh3=+) 5...Nbd7 6.c4 e6 7.Nh3=.

4.b5 e6 5.e3 Nf6 6.c4 Bd6 7.Nc3 0-0 8.d4 c6 9.a4 Nbd7 10.Bd3 Rc8 11.Qb3 Ne8 12.Kd2 (better is 12.c5!? Qh4 13.Kd1=) 12...dc4–/+ 13.Bc4 c5 14.Nge2 cd4 15.Nd4 Ne5 16.Bd3 Bc5 17.Ne4 Nd3 18.Qd3 Bb4 19.Bc3 (better is 19.Ke2!?=+) 19...Bc3–+ 20.Nc3 Bg6 21.e4 Qg5 22.Kc2 Qg2 23.Qd2 Qd2 (better is 23...Qh3!? 24.Qf4 Qh5–+) 24.Kd2–/+ Nd6 25.Rhc1 Rfd8 26.Nce2? (26.Ke1 e5 27.Nde2 f5–/+) 26...Rc1 (26...e5 27.Nb3 Ne4 28.Ke1–+) 27.Rc1 e5 28.Nb3 Ne4 29.Ke3 Ng5 30.Nc5 b6 31.Ne4 Ne4 32.fe4 Kf8 33.Rc7 Ra8 34.Nc3 f6 35.Nd5 Bf7 36.Ne7 a6 37.Nc8 ab5 38.Nb6 Ra5 39.ab5 Rb5 40.Nd7 Ke8 41.Nc5 Rb8 42.Nb7 Kf8 43.Nd6 Bg6 44.Kf2 Rd8 45.Nf5 Bf5 46.ef5 Re8 47.h4 Re7 48.Rc8 Kf7 49.Ke3 Rd7 50.Rh8 h6 51.h5 Rd4 52.Rb8 Rf4 53.Rb7 Kg8 54.Rb8 Kh7 (55.Rb2 Rf5–+) 0–1. Datkiewicz,P – Gosciniak,Tomasz, Poland–ch U14 Zamosc, 1999.

4.d3 c6 5.Qd2 a5 6.Qg5 Bg6 7.ba5 Qa5 8.Bc3 Qb6 9.e3 (9.a4 d4 10.a5 Qd8=+) 9...Nd7 10.Ne2 (10.Kf2 e5! 11.Ne2 Ra4-+) 10...h6 (10...Ra2 11.Nd2 Ra1 12.Ba1-+) 11.Qf4 Ngf6 (better 11...Ra2 12.Nd2 Ra1 13.Ba1 Ngf6-/+) 12.Nd4?? (better 12.Nd2=+) 12...e5-+ 13.Qg3 ed4 14.Bd4 Bc5 15.Nd2 Bd4 16.ed4 Qd4 17.Rb1 (17.Nb3 Qb2-+) 17...0-0-0 (better 17...Ra2 18.Kd1-+) 18.Be2 Rhe8 19.Qf2 Qf2 20.Kf2 Nc5 21.Nb3 Na4 22.Na5 (22.Nd4 Kc7-+) 22...Nc3 23.Rb7 (23.Rbe1-+) 23...Re2 24.Kg3 Nh5 (better 24...Rc2 25.Re7 Rd6-+) 25.Kg4 (25.Kh4 Nf4 26.g3 Ng2 27.Kh3 Rc2 28.Rb4-+) 25...Rg2 26.Kh3 Nf4 27.Kh4 Bf5 28.Rf7 (28.Rc7 Kc7 29.Nc6 g5) 28…g5 0-1. alessandrocarvalhaes (1960) - HawkingFeynman (2420), lichess.org, 2019.

4.e3 Qd6 5.a3 (5.b5 Nf6 6.c4 e5 7.cd5= –0.09; 5.Nc3 e5 6.Nge2 Nd7 7.a3= 0.00; 5.c4 dc4 6.Qa4 Nc6 7.Bc3= –0.09) 5...e5 6.c4 Nf6 7.Nc3 =.

4.e3 Nf6 5.Ne2 (5.Qe2 c6 6.a3 Bg6 7.d3=+ –0.44; 5.Nh3= Nbd7 6.g4 Bg6 7.Nf4=+ –0.28; 5.a3 Nbd7 6.c4 e6 7.Nh3= –0.22; 5.Bd3 e6 6.a3 Bd6 7.Ne2= –0.25; 5.c4 e6 6.c5 Bg6 7.Nh3=+ –0.28) 5...e6 6.g4 Bg6 7.Nf4 =.

4.e3 Bg6 5.f4 (5.Ne2 Qd6 6.a3 e5 7.f4= –0.09; 5.a3 Nd7 6.f4 a5 7.b5= –0.19; 5.Nh3 Qd6 6.Nc3 e5 7.f4= –0.19; 5.c4 e6 6.Qa4 c6 7.cd5=+ –0.34; 5.Be2 Nd7 6.f4 e5 7.Nf3=+ –0.31) 5...Nf6 6.Nf3 e6 7.a3 =.

4.e4 d4 5.a3 (5.Nh3 e5 6.c3 dc3 7.Bc3=; 5.Ne2 e5 6.c3 dc3 7.Bc3=; 5.Qe2 e5 6.Qb5 Nd7 7.Qb7=; 5.c3 dc3 6.Bc3 Nd7 7.Qa4=; 5.e5) 5...e5 6.c3 Nf6 7.cd4=.

4.e4 e6 5.ed5 (5.Qe2 Nc6 6.a3 Nf6 7.b5=) 5...ed5 6.Qe2 Ne7 7.Na3=.

4.Be5 Nc6 5.Bg3 (5.Bc3 d4 6.b5 dc3 7.bc6 cd2 8.Qd2 b6=+) 5...Nb4–/+ 6.d4 (6.Nc3!?–/+) 6...Bg6–+ 7.Na3 c5 8.c3 Nc6 (8...Qa5 9.dc5 e6 10.Qb3 Qc5 11.Kd1–+) 9.e4–/+ cd4 10.Ne2? (better is 10.Qb3 e6 11.Qb7–/+) 10...e5–+ (< 10...de4 11.Nd4 Nd4 12.Qd4 Qd4 13.cd4–+) 11.cd4 (11.Nb5 de4 12.Ned4–+) 11...Ba3 12.Qa4 (12.Be5 Qa5 13.Kf2 Ne5 14.de5 de4–+) 12...Bb4 13.Kf2 Nge7 (13...ed4 14.Nd4 Qb6 15.Rd1–+) 14.Rb1 (14.a3 Bd6 15.ed5 Nd5 16.Be5 Be5 17.de5 Qb6 18.Kg3 Qe3–+) 14...Bd6 15.Rb7 0-0 16.ed5 Nd4 17.Nd4 ed4 18.Ra7 Ra7 19.Qa7 Bg3 20.hg3 d3 21.Qa3 Qb6 22.Ke1 Nd5 23.Bd3–+ Qe3 24.Kd1 Bd3 (25.Re1 Bc2 26.Kc2 Rc8 27.Kb2 Qd2 28.Ka1 Qe1 29.Kb2 Qc1 30.Kb3 Qc2) 0–1. JonathanDee – thotares (1675), internet, 2007.

4.Be5 Nd7 5.Bg3 –/+.

4.g4?! e5 5.h4 Be7! –+. Schwarz.

4.g4 e6 5.h4 Be7 6.g5 (better is 6.Qc1 Bh4 7.Kd1+/–) 6...f6–/+ (6...Bb4?? 7.Bg7 Bd6 8.Rh3+–) 7.f4 (7.a3 a5–/+) 7...e5 (7...Qd6 8.Nh3–/+) 8.Nf3 (8.fe5!? fg5 9.hg5 Bg5 10.Qc1=+) 8...ef4–/+ 9.c4 (9.a3 a5–/+ (9...fg5?! 10.Bg7 Bf6 11.Bh8 Bh8 12.c3=+)) 9...Nc6 (9...dc4 10.Qc2 Bf7 11.Rg1–+) 10.b5 Bf3 (10...Na5 11.cd5 Nc4 12.Bg2–+) 11.ef3–/+ Ne5 12.Be5 fe5 13.Qb3 (13.Qe2 Bd6–/+) 13...d4 (13...h6 14.Bh3–+) 14.Bh3 h6 15.Qd3 hg5 16.Qg6 Kf8 17.Be6 Nh6?? 18.hg5+– Bg5 19.Rg1 Bh4–+ 20.Kd1 Qf6 21.Qh5? Qe6 22.Qh4 Qf6 23.Qh3 Nf7 24.Qd7 Qd6 25.Qf5 Re8 26.Rg6?? Qd8 27.Qg4? (27...Rh1 28.Kc2 d3 29.Kb2–+; 27.Rg1–+). TheSmoker – Sc3, caissa.com, 2006.

4.Nh3 Nd7 5.Nf2 (5.Nf4 Ngf6 6.Nc3 e5 7.Nfd5 Nd5 8.Nd5 c6+=) 5...e5+= 6.a3 Ngf6 7.g3 a5 8.b5 Bc5 9.Bg2 Qe7 10.0-0 0-0 11.Kh1 (11.e3 Nb6+=) 11...a4 (11...Bf2 12.Rf2 Qc5 13.e3 Qb5 14.Qc1–/+) 12.Nc3 Rfe8 13.e3 e4 (13...Nb6 14.Nd3+=) 14.d4?? (14.g4 Bg6 15.fe4 Ne4 16.Nd5 Nf2 17.Rf2 Qh4+/–) 14...ef3 (14...ed3 15.Qd3 A) 15...Qe3?! 16.Nd5 Qd3 17.Nf6 (17.Nd3? Nd5 18.Bh3 N5b6–+) 17...Nf6 18.Nd3+=; B) 15...c6–/+) 15.Bf3+= Bf3 16.Qf3 Bd6 17.Rae1 (17.Nd5!? Nd5 18.Qd5+=) 17...c6 18.bc6 bc6 19.e4 Ba3 (19...Rab8 20.Bc1 c5 21.Bg5=) 20.Ba3= Qa3 21.e5 Ne4?? (better is 21...Qe7=) 22.Nfe4+- de4 23.Qf7 Kh8 24.Ne4 (24.Qd7?! Qc3 25.Re4 Rf8 26.Rf8 Rf8+=) 24...Re7 25.Qh5 (better is 25.Qc4!?+-) 25...Qa2+/– 26.Qe2 (26.Qh4 Rf7+/–) 26...a3 27.Ra1 Qd5 28.c3 Ne5 29.de5= Re5 30.Rfe1 Ra4?? 31.Qg4?? Ree4 32.Qc8 Re8 33.Kg1 Rc8 0–1. Fournier,Frederic – TUUR (1685), Partie evaluee, 3m + 0s, 2008.

4.Nh3 e5 5.Be5 (5.e3 Qh4 6.g3 Qe7 7.a3=+) 5...Nc6 6.Bc3 d4 7.b5 =.

4.Nh3 e6 5.a3 (5.Nf4 Nf6 6.e4 de4 7.Qe2=; 5.b5 Nf6 6.e3 Bd6 7.Be2=+) 5...Nf6 6.e3 Bd6 7.Nc3 =.

4.Nh3 f6 5.d4 (5.Nf4 Bf7 6.d4 e5 7.de5=+; 5.a3 e5 6.e3 c5 7.bc5=; 5.Nc3 e5 6.a3 d4 7.Ne4=; 5.e3 e5 6.a3 Bf7 7.d4=; 5.e4 e5 6.ed5 Bb4 7.Qe2=) 5...e5 6.a3 Bd6 7.e3 =.

4.Nh3 Bg6 5.c4 (5.a3 Qd6 6.c4 dc4 7.e4=; 5.Nf4 Qd6 6.e3 Qb4 7.Be5=+; 5.e3 e6 6.Nf4 Nf6 7.g4=) 5...dc4 6.e4 b5 7.a4 =.

4.h4 f6 5.g4 Bf7 6.e3 e5 7.b5 Nh6 8.Nh3 Nd7 9.Nf2 Be6 10.a4 Nf7 11.d4 c5 12.bc6 bc6 13.Bd3 Rb8 14.Ba3 c5 15.0-0 Bd6 16.dc5 Nc5 17.Bb5 Kf8 18.Nd3 Qc7 19.Nd2 h5 20.Qe1 hg4 21.fg4 Bg4 22.Qg3 Be2 23.Rf2 e4 24.Qg2 ed3 25.cd3 Bh5 26.Raf1 Rb5 27.ab5 Nd3 28.Qd5 Nf2 29.b6 ab6 30.Qa8 Ke7 31.Bd6 Qd6 32.Qb7 Qd7 33.Qd7 Kd7 34.Kf2 Ne5 35.Ne4 Bg6 36.Kg3 Be4 37.Rd1 Ke6 38.Rd4 f5 39.Rb4 Rb8 40.h5 b5 41.Kh4 Nd3 42.Rb1 b4 43.h6 gh6 44.Rb3 Nc5 45.Rb2 b3 46.Kh5 Nd3 47.Rb1 b2 48.Kg6 Ne5 49.Kg7 Bb1 50.Kh7 Be4 51.Kg7 b1Q Normal 0-1. ZeruHmyz (2300) - killercars (2220), Rated Blitz game, lichess.org, 2015.

5.a3 e5 6.Nc3 Nb6 7.Nce2 =+.

5.Nc3 e6 6.a3 Ngf6 7.Nh3 =.

5.c4 e5 6.cd5 (6.Nh3=+ dc4 7.a3–/+) 6...Qh4 7.g3 =.

5.c4 e6 6.Qb3 Ngf6 7.Nc3= c6 8.cd5 cd5 9.Rc1 Be7 10.g4 Bg6 11.h4 h6 12.Nh3 Ne5 13.Be2 Nfd7 14.h5 Bh7 15.Nb5 0-0 16.Nd4 a5–/+ 17.f4 Bh4 18.Nf2= Nc4 19.Bc4 dc4 20.Qc4 Bf2 21.Kf2 Nf6 22.d3?? e5–+ 23.Rhg1 ed4 24.Bd4 ab4 25.g5 Nh5 26.Kf3 Qd7 27.g6 Qh3 28.Kf2 Bg6! 29.Rg6 Rfc8 30.Bc5 Rc5! 31.Qc5 Ra2 32.Rc2 Rc2 33.Qc2 fg6 34.Qc4 Kh7 35.Qb4 Qg3 36.Ke2 Qg2 37.Kd1 Qf1 (38.Kc2 Qe2 39.Qd2 Qd2 40.Kd2 Nf4–+) 0–1. Campora,Daniel – Iruzubieta,Jesus Maria, Elgoibar, 1995.

5.d4 e6–/+ 6.Ne2 Bb4 7.Nec3? (7.Nbc3!?–/+) 7...Nh6 8.g4 (8.Bd3 Qg5 9.Qd2 Nf5 10.Bf5 Qf5–/+) 8...Qh4 9.Kd2 Bg6 10.a4? (10.Qe1 Qf6 11.Be2–+) 10...c5 11.Ba3 a5 12.Bb5 (12.Bd3 cd4 13.ed4 0-0 14.Bg6 fg6–+) 12...cd4 13.Bd7 (13.ed4 Qf2 14.Kc1 Rc8–+) 13...Kd7 14.ed4 Qf2 15.Qe2 (15.Kc1 Qe3 16.Qd2 Qf3–+) 15...Bc3 16.Nc3 Qd4 17.Kc1 Qc3 18.Bb2 Qb4 19.Rd1 Rhc8 20.Rd2 f6 21.h4 Ra6 22.h5 Rb6 23.Ra2 Qb3 24.Kb1 Rc2! (24...Rc2 25.Rc2 Bd3–+) 0–1. Arndt,Mario (2000) – Jugl,Peter (2225), BdF OS–052 remoteschach.de, 2007.

5.Qe2 e5 6.a3 Ngf6 7.Qb5 =+.

5.Ne2 e5 6.Nbc3 Qh4 7.Ng3 =+.

5.Nh3 e5 6.Nc3 Ngf6 7.g4 =+.

5.h4 f6 6.c4 e5 7.Qb3 a5 8.a3 Bf7 9.cd5 (9.Nc3 Nb6 10.Nd5 Nd5 11.cd5 Qd5 12.Qd5 Bd5=) 9...ab4+= 10.ab4 Ra1 11.Ba1 Ne7 12.Nc3 Nb6 d5 seems the pivot of the position 13.e4 c6 14.Qa3 cd5 15.Bb5 Nc6 16.Qa7 Qc7 (16...Bb4 17.Qb7 0-0 18.Bc6 de4 19.Be4=) 17.ed5 Nd5 18.Qa8 Kd7 19.Nd5 Bd5 20.Ne2 Qb6 21.Qa4 Kc7 (21...Bb4? 22.Qb4 Ra8 23.Bc6 Kc6 24.Qb6 Kb6 25.Kf2+-) 22.Bc3 Kb8 23.h5 Bd6 24.Rh4 f5 Black plans e4 25.Kf1 Rd8 26.d3 e4 27.de4 fe4 28.f4 Bb4 29.Bg7 (better is 29.Rh3–/+) 29...Bb3–+ 30.Qb3 Qb5 31.Rh3 (31.f5 Qf5 32.Kg1 Bc5 33.Kh2 Bd6 34.Kg1 Qc5 35.Kf1 Qg5 36.Re4 Qg7–+) 31...Rd2 32.Re3 Qh5 33.Re4 (33.Bh8 Qh1 34.Kf2 Qh4 35.Kf1 Rb2 36.Qb4 Rb4–+) 33...Bc5 34.Ke1 Rd7 35.Qg8 (35.Qh3 Qd5 36.Qd7 Qd7 (36...Qe4?! 37.g4=) 37.Be5 Kc8–+) 35...Kc7 36.Nd4 Bd4 (36...Nd4 37.Be5 Kb6 38.Rd4 Qh1 39.Ke2 Bd4 40.Qb3 Kc5 41.Qc2 Kb4 42.Qd2 Kb5 43.Qd3 Ka4 44.Qc2 Ka5 45.Qa2 Kb5 46.Qb3 Kc6 47.Qc2 Bc5 48.Qa4 b5 49.Qa6 Bb6 50.Qa8 Kc5 51.Qc8 Rc7 52.Bc7 Qg2 53.Ke3+=) 37.Bd4 Nd4 (37...Rd4?! 38.Rd4 Qh1 39.Kf2 Qh4 40.Kg1 Qe1 41.Kh2 Qh4 42.Kg1 Qe1 43.Kh2 Qh4 44.Kg1=) 38.Kf2 (38.Qc4 Nc6–+) 38...Qh4 39.Qg3 (39.Kf1 Nc6 40.Qe8 Rd1 41.Re1 Qf4 42.Kg1 Qd4 43.Kf1 b5–+) 39...Qg3 40.Kg3 b5 41.Re1 b4 42.Kf2 b3 43.g4 (43.Rc1 Kb6 44.Re1 Kc5–+) 43...Kd6 44.Rb1 (44.f5 Kc5 45.Rd1 Kc4–+) 44...Kc5 45.f5 Kc4 46.Kg3 (46.f6 Nb5 47.Kf3 Na3 48.Rc1 Kd5 49.Rd1 Ke6–+) 46...Kc3 47.Rc1 (47.f6 b2–+) 47...Nc2 48.f6 (48.Kf4 b2 49.Rb1 Na3–+) 48...b2 49.Rb1 Na3 (49...Na3 50.Rb2 Kb2–+) 0–1. condoru (2090) – chess_research (2295), gameknot.com, 2014.

5.h4 f6 6.c4 Bf7 7.cd5 =+.

5.h4 h6 6.Ne2 e5 7.Ng3 +=.

5.h4 h6= 6.g4 Bg6 7.f4 =+.

5.a3 Nf6 6.Nh3 Bd6 7.Nc3 =.

5.b5 Nd7 6.Nc3 Nb6 7.Nh3 =.

5.b5 Bg6 6.f4 Nf6 (6...Ne7 7.Nf3=) 7.Nf3 Be7 (7...a6 8.ba6 Na6 9.Ne5=) 8.Be2 0-0 (8...a6 9.ba6 Na6 10.Ne5=) 9.0-0 Nbd7 (9...a6 10.a4=) 10.a4 (10.Nh4 Bh5=) 10...Rc8 (10...Ne4 11.Nd4=) 11.c4 (11.Nh4 Bh5+=) 11...dc4 (11...c6 12.d3=) 12.Na3 (12.Bc4 c6=+) 12...Nc5 (12...c3 13.Bc3 c6 14.bc6 Rc6 15.Nc4=) 13.Nc4 Nd3 (13...Bf5 14.Nd4=) 14.Bd4 Bc5 (14...c5 15.bc6 Rc6 16.Nfe5 Ne5 17.Ne5+=) 15.Bc5+= Nc5 16.Nce5 Qe7 (16...Bf5 17.Rc1 Nd3 18.Nd3 Bd3 19.Bd3 Qd3 20.Ne5+=) 17.a5 (17.d4 Nce4+=) 17...Be4 (17...Nd5 18.a6 ba6 19.ba6+=) 18.d3 (18.a6 ba6 19.d4 Rfd8+/–) 18...Bf3 19.Rf3 (19.Nf3?! Nd5 20.d4 Ne3=) 19...c6 (19...Nd5 20.a6+/–) 20.bc6 bc6 21.Qc2 Ncd7 22.Nc4 Nd5 23.e4 Nb4 24.Qc3 c5 25.Rff1 Nc6 26.Rfb1 Nd4=+ 27.Bd1 Qf6 28.Qd2 Rfd8 29.Ra2 Rb8 30.Rab2= Rb2 31.Rb2 Rb8 32.Rb8 Nb8 33.Ne5 Qd8 34.Qc3 Nbc6 35.Qc5 Qa5 36.Qa5 Na5 37.Kf2 Nac6 38.Nc6 Nc6 39.Ke3 Kf8 40.Ba4 Nd8 41.Kd4 Ke7 42.Kc4 f6 43.e5 Nf7 44.d4+= g5 45.ef6 Kf6= 46.fg5 Ng5 47.Bc2 h6 48.Kb5 Ke7 49.Ka6 Kd6 50.Bb3 e5 51.de5+= Ke5 52.Ka7 Ne4 53.Bc4 Kf4 54.Kb6 Nf2 55.Be2 Ne4 56.Kc6 Nf6 57.Kd6+/– h5 58.Ke6 Kg5 59.h4 Kh4= ½–½. Haider,Herbert – Hofmann,Juergen, Bayern–chB Tirschenreuth, 1982.

5.Bc3 Nf6 6.Nh3 Ne4 7.Bb2 =+.

5.c4 dc4 6.Qa4 c6 7.b5 =.

5.Ne2 Qh4 6.Ng3 Nd7 7.Bb5 =+.

5.Nh3 Bb4?? 6.Bg7+– f6 7.Bh8 Kf7 8.Qc1 Nh6 9.Qb2 Nc6 10.Ng5! Kg6 (10...fg5 11.Qg7) 11.Bd3 (11...Nf5 12.Ne6 Qh8 13.g4+–) 1–0. Kurnatowski,Vitali – Makhlin,Maxim, Hessen–ch U14, 2005.

5.Nh3 Nd7 6.g4 (6.Nf4 Ngf6 7.Be2 Bd6=) 6...Bg6 7.f4? (better is 7.Nf2!?=+) 7...Qh4–+ (7...Bb4 8.Bg7 Qh4 9.Nf2+/–) 8.Nf2 Be4 (8...Bb4 9.Bg7 Be4 10.Rg1 (10.Bh8 Bh1 11.a3 Be7=+) 10...Qh2 11.Nh3+–) 9.Rg1 Qh2 10.Nh3 h5 11.gh5 Bf5 12.Qf3? Bh3 13.Rh1 Bg4 14.Qg4 Qh1 15.Bg7 Ngf6 16.Bf6 Nf6 17.Qe2 Qh4 18.Kd1 Qh5 19.c3 Qe2 20.Be2 Rh1 21.Kc2 a5 22.b5 a4 23.a3 c6 24.c4 cb5 25.cd5 Nd5 26.Bb5 Kd8 27.Ra2 Rc8 28.Nc3 Rh2 (29.Kd3 Nc3 30.dc3 Ra2–+) 0–1. Badstuber,Serge – Slavik,Petr, internet, 2002.

5.Nh3 Qh4 6.Nf2 Qb4 =+ (6...Bb4?? 7.Bg7 Qg5 8.Bh8+-).

5.h4 f6 6.g4 Bf7 7.Qe2 =+.

5.Qe2 Bg6 6.fe4 Nf6 7.Nc3=.

5.g4 Bg6-/+ 6.fe4 (6.Nc3 e6 7.h4 h5-/+) 6...Be4 (6...Nf6 7.Nc3 e6 8.a3-/+) 7.Nf3 Nf6 (better 7...Nc6 8.Nc3 Bg6-/+) 8.h3? (8.Nc3!? Bg6 9.g5-/+) 8...e6 (better 8...Qd6!? 9.Bg2 Nc6 10.d3-+) 9.a3 Nbd7 (9...h5 10.g5 Nd5 11.Nc3 Nc3 12.Bc3-/+) 10.Nc3-/+ Bg6 11.Ne2 (11.Bg2!?-/+) 11...Bd6-+ 12.Bg2 0-0 13.Ng5 (13.0-0 a5-+) 13...h6 (better 13...Ng4 14.hg4 Qg5 15.Bb7-+) 14.Bf6? (14.Nf3 a5-+) 14...Nf6 (14...Qf6!? 15.Nf3 Bc2 16.Qc1-+) 15.Nf3 c5 16.Nh4 (16.bc5 Bc5 17.d4 Bd6-+) 16...Be4 (16...Ne4 17.Nf3 (17.Ng6?? fg6 18.h4 Qf6-+) 17...cb4 18.ab4-+) 17.Be4 Ne4 18.Nc3 (18.Nf3 cb4 19.d3-+) 18...Qh4 19.Ke2 Ng3 (19...Qf2 20.Kd3 c4 21.Kc4 Nd2 22.Qd2 Qd2 23.Rh2 Rac8 24.Kb3 Rc3 25.Ka4 Bh2 26.Ra2 Qd6 27.b5 b6 28.Ra1 Qd4) 20.Kd3 (20.Kf3 Nh1 21.Qh1 f5-+) 20...Nh1 (20...Rac8 21.Rc1 Qf6 22.Kc4 cb4 23.Kb3 Rc3 24.Kb2 Qd4 25.Rf1 ba3 26.Ka2 Rb3 27.c3 Rb2 28.Ka1 Qc4 29.Qb3 Qb3 30.Rf7 Ra2) 21.Qh1 cb4 22.ab4 Bb4 23.Ne4 (23.Kc4 a5 24.Kb3 Rfd8-+) 23...Rfd8 (23...f5 24.Kc4 Be7 25.Nc3 Rac8 26.Kb3-+) 24.Ke2 (24.Kc4 Bd2 25.Kb3 Qe7-+) 24...f5 25.gf5 ef5 26.Qg2 Qe4 (better 26...fe4 27.c3 Qf4 28.Ra2-+) 27.Qe4 fe4 (better 27...Rd2 28.Ke3 fe4 29.Rb1-+) 28.Rb1 Rd2 29.Ke3 a5 30.Ke4 Rc2 31.Kd3 Rac8 32.h4 Kf7 33.h5 Ke6 34.Rg1 (34.Rb3 Rh2 35.Ke4 Rh4 36.Kd3 Rh3 37.Ke2 Rc2 38.Kd1 Rd2 39.Kc1 Rh1) 34...R8c3 (34...Ke5 35.Re1 Be1 36.Ke3 R8c3) 35.Kd4 (35.Ke4 Rc4 36.Kf3 Kf5 37.Re1 Be1 38.Ke3 Rd2 39.Kf3 Rc3) 35...Bc5 36.Ke4 Bg1 (36...Re3 37.Kf4 Rc4) 37.Kf4 Re2 38.Kg4 Ke5 (38...Re4) 39.Kh4 Re4 0-1. reza1378 - FraGer68 (2315), Rated Blitz tournament, lichess.org, 2015.

5.Nh3 e6 6.a3 Nc6 7.Nf2 e5 8.h4 h5 9.g5 f6 10.Rg1 Bf5 (10...d4 11.c3=) 11.e4 Be6 12.ed5 (12.Bb5 a5 13.gf6 Qf6=) 12...Bd5 13.c4 (13.Nc3 Nd4 14.Nd5 Qd5=) 13...Be6=+ 14.Nc3 Nd4 (14...Qd7 15.gf6 Nf6 16.b5-/+) 15.Nce4 (15.Nb5 Nb5 16.cb5 Qe7=) 15...f5=+ 16.Nc5 Bc8 (16...Bc5 17.bc5 Qe7 18.Bd4 ed4 19.Qe2=+) 17.f4 (17.Nb3 Ne7+=) 17...b6 (17...Bc5 18.bc5 ef4 19.Be2=+) 18.Bd4 (better 18.Bg2!? e4 19.Qa4 Ke7 20.Ncd3+/-) 18...Qd4=+ 19.Nb3 (19.Ncd3!? ef4 20.Qe2 Kd8 21.Rc1=) 19...Qf4-/+ 20.Bg2 Rb8 (20...e4 21.d3 e3 22.Nh3 Qh4 23.Kf1-/+) 21.Bc6 Bd7 22.Bd7 Kd7 23.Qe2 e4 24.0-0-0 (24.Rh1 Bd6-/+) 24...Ne7 25.Kb2 Nc6 (25...Qh4 26.d3 ed3 27.Rd3 Kc8=+) 26.d3=+ Qf3?? (better 26...e3 27.Nh3 Qh4 28.Qe3 Bd6-/+) 27.de4+- (27.de4 Bd6 28.Qf3+-) 1-0. Trentosk (2475) - CronusCR (2300), Casual Bullet game, lichess.org, 2017.

5.h4 h6 6.c4 dc4 7.Nc3 e6 8.a3 Bd6 9.Bg2 Bg3 10.Kf1 Bh4 (10...Nc6 11.h5 Bh7 12.e4-+) 11.Nb5? (better 11.f4 Nc6 12.Bc6 bc6 13.Qa4=+) 11...Bf6-+ 12.Qc1 a6 13.Nd4 (13.Nc3 Nc6 14.Ne4-+) 13…Bd4 0-1. carlos78 (2230) - Metalhead_666 (2220), Rated Blitz game, lichess.org, 2015.

5.a3 e6 6.e3 Bd6 7.Nc3 =.

5.e3 e6 6.a3 Bd6 7.Nc3.

5.Nf4 e6 6.e3 Bd6 7.Qe2 =.

5.Bf6 ef6 6.Nf4 Bg6 7.a3 =+.

5.g3 Nbd7 6.Nf4 Bg6 (6...e6 7.c4 dc4 8.Na3=+) 7.Bh3 (7.Nc3 e6=+) 7...e5 8.Bd7 Nd7 (< 8...Kd7 9.Be5 Bb4 10.Nc3+/–; 8...Qd7?! 9.Be5 Bb4 10.Nc3=) 9.Nd5 c6 10.Ne3 Bb4 11.Bc3 (11.Nc3 0-0–/+) 11...Bc5 12.Nc4 (12.0-0 Qc7–/+) 12...0-0 0–1. dimebag (1950) – antoniowithouthelp (2310), net–chess.com, 2007.

5.g3 e6 6.b5 =+.

5.g4 Bg6 6.e3 Nfd7 7.Nc3 =+.

4.a3 Kd8 5.Be5 (5.Ne5 Nh6+=) 5...Qe6= 6.d4 (6.Bg3 Bf3 7.gf3 g6=) 6...Kc8 (6...Bf3 7.gf3 (7.ef3? f6–+) 7...Nd7 8.Bg3=) 7.e3 Nc6 8.Bf4 (8.Be2 h6+=) 8...Bf3 9.gf3 Nf6 10.b5 Na5 11.Nc3 (11.Nd2 Nh5 12.Be5 f6=) 11...Nh5 (11...Qd7 12.e4=) 12.Be5 f6 13.Bg3 f5 14.Be5 Nf6 15.Qd2 Nd7 16.Rd1 (16.Bg3 Nf6=) 16...Rb8 (16...Nc4 17.Bc4 dc4 18.f4=) 17.Nd5+= Qd5 18.Qa5 Ne5 19.de5 Qe5 20.Qd2 (20.Qa7?! Qc3 21.Ke2 e6+=) 20...Qd6 21.Qc3 Qf6+– 22.Qd3 b6 23.Qd8 Kb7 24.Qd5 c6 25.bc6 Qc6 26.Ba6! Kc7 27.Qe5 Qd6 28.Rd6 ed6 29.Qf5 Kd8 30.Bb5 Rb7 31.Qe4 a6 32.Qe8 Kc7 33.Bc6 b5 34.Qd7 Kb6 35.Qb7 Ka5 36.Bb5! ab5 37.Qa7 1–0. Registration (2385) – Celes (2430), ICC, 2003.

4.a3 Nf6 5.Be5 Qb6 6.Bd4 Qe6 7.e3 Nc6 8.Bb5 (8.Bb2 0-0-0=) 8...Qf5 (8...a6 9.Bc6 Qc6 10.0-0=) 9.h3 Bf3 10.Qf3 Qc2 11.Nc3 e6 (11...Ne4 12.0-0 Nc3 13.Bc3+=) 12.Bf6 gf6 13.Qf4 (13.e4 de4 14.Bc6 bc6 15.Ne4 f5=) 13...Bd6= 14.Qf6 0-0 (14...Rg8 15.g3=) 15.Bc6+= bc6 16.e4 (16.Ne2 a5 17.Rc1 Qg6 18.Qg6 fg6=) 16...Rfb8 (16...de4 17.Qd4=) 17.Qg5 (17.e5 Bf8+/–) 17...Kf8+= 18.Qh6 (18.e5 Be7 19.Qh6 Ke8=) 18...Kg8= 19.0-0 Be5 (19...d4 20.Qg5 Kf8 21.Rfc1+=) 20.Rac1 (20.Qg5 Bg7+/–) 20...Qb2 21.Qe3 d4 22.Qg5 Bg7 23.Nb1 Rb6 24.Rc5 Re8 25.Qg3 e5 26.Rfc1 Re6?? 27.R5c2+– Qa1 28.Qb3 Bh6 29.Ra2 Bd2 30.Rd2 c5 31.Ra2 Qa2 32.Qa2 cb4 33.Rc7 b3 34.Qd2 h6 35.f4 Rec6 36.Rc6 Rc6 37.fe5 Rc2 38.Qh6 b2 39.e6 fe6 40.Qe6 Kf8 41.e5 Rc1 42.Kf2 Rb1 43.Qf5 Ke7 44.Qb1 Ke6 45.Qb2 Ke5 46.Ke2 Ke4 47.Qb7 Ke5 48.Qa7 Ke4 49.Qc5 d3 50.Kd2 Kf4 51.Qd5 Kg3 52.Qf3 Kh2 53.g4 Kg1 54.Kd3 Kh2+– 55.g5 Kg1 56.Ke3 Kh2 57.Qg4 Kh1 58.Kf2 Kh2 59.Qg2 1–0. Registration (2400) – Celes (2410), ICC, 2003.

4.b5 Nd7=+ 5.h3 (5.e3 e5=) 5...Bf3 6.ef3 0-0-0 (6...e5 7.c4=+) 7.Nc3 (7.a4 e5=+) 7...d4 (7...e5 8.Qe2=+) 8.Ne4= Qe5 9.Be2 f5 (9...e6 10.c3=) 10.Ng3 (10.Ng5 Qf6 11.f4 e5=) 10...Ngf6 11.0-0 f4 12.Nh1 (12.Ne4 Ne4 13.fe4 Qe4=) 12...Qd6 13.Bd3 (13.a4 e5=) 13...e5 (13...Ne5 14.Qe2=+) 14.Re1 Kb8 (14...Nc5 15.Qe2=+) 15.Qe2= Qb4 (15...g6 16.Rac1=) 16.a3 Qa4 17.c4 (17.c3 Bc5=) 17...Nc5 (17...Bd6 18.Bf5=+) 18.Bf5 (18.Rab1 Nd3 19.Qd3 Nd7=+) 18...Bd6 19.d3 (19.b6 ab6 20.Rac1 Qb3–/+) 19...g6–/+ 20.Be4 Qb3 21.Red1 Na4 22.Rdb1=+ Nb2 23.Rb2 Qc3 24.Rba2 g5 25.a4 Qa5 26.Rc1 Be7 27.c5= Qb4 28.c6 b6 29.Rcc2 Nd5 30.Bd5= Rd5 31.Qe4 Qb1 32.Kh2+= Rhd8 33.Qh7 Bf6 34.Qf7 R8d6+= 35.Qf8 Bd8 36.Qf5 Qf1 37.Qe4+/– Qb1 38.Rcb2 Qd1 39.Re2 Rc5 40.Re1 Qb3 41.Rea1 Rc1 42.Rc1 Qa2 43.Rc4 Qd2 44.Qf5 Bf6 45.Qg6 Bd8 46.Qf5 Qd1 47.Rb4 Bf6 48.Qh7 Bd8 49.Qf5 Qc2 50.Qe4 Bf6+= 51.Qh7 Qa2 52.Qg6 Bd8 53.Qe4 Bf6 54.Rc4 Qd2= 55.Qh7 Qd1 56.Qg6 Qd2= 57.Qg8 Rd8 58.Qe6 Rf8 59.Qf5 Qa2 60.Qg6 Qb1 61.Qh7 Qd1 62.Qe4 Bh8 63.Qg6 Bf6 64.Qh7 Qb1 65.Qg6 Be7 66.Qe4 Bd6 67.Qe2 Kc8 68.Qd2 Ba3 69.Qc2+= Qf1 70.Qb3 Bd6 71.a5 ba5 72.Ra4= g4 73.Qe6 Kb8 74.Qg4 Qd3 75.Ra5 Qc3 76.Ra6 (76...d3 77.b6 ab6 78.Qe6 Qc6 79.Qb3–/+). Registration (2435) – Celes (2380), ICC, 2003.

4.Be5 Qb4 5.Nc3 Qc5 6.Rb1 Bf3 7.ef3 =.

4.Be5 Qb6 5.Nc3 e6 (5...Bf3 6.ef3 e6 7.Nb5+=) 6.Bd4 Qd6 7.Bc5 (better is 7.a3=) 7...Qd7?? (better is 7...Qf4=) 8.Ne5+– Be2 (8...Qd8 9.Bf8 Kf8 10.Ng4+–) 9.Qe2 (better is 9.Nd7 Bd1 A) 10.Nf8?! Bh5+–; B) < 10.Rd1 Nd7 11.Bd4 c6–/+ (11...Bb4?? 12.Bg7 Ngf6 13.Bh8+–); C) 10.Bf8+–) 9...Qd8 (9...Qc8 10.Nd5 Bc5 11.bc5 Nh6+–) 10.Qb5 c6 (10...Nd7 11.Bf8 Kf8 12.Nd7 Ke7 13.Ne5+–) 11.Qb7 Nd7 12.Bf8 Ne5 13.Bg7 Ng6 (13...Rb8 14.Qa7 Ng6+–) 14.Qc6 (14...Ke7 15.Qb7 Qd7 16.Qa8+–) 1–0. marekt – alex.a, ChessWorld.net, 2004.

5.Nc3 =.

5.e3 e5 6.h3 Bf3 (6...Bh5 7.Be2=) 7.Qf3 Ngf6 8.Nc3 0-0-0 9.Nb5 Qb6 10.c4 a6 11.Nc3 (11.c5 Qe6 12.c6 bc6=) 11...d4 12.Nd5 Nd5 13.Qd5 de3 14.de3 Qf6 (14...c6 15.Qd2=) 15.Be2 (15.Rd1 g6+=) 15...c6 (15...Qg6 16.Rd1 c6 17.Qf3+=) 16.Qe4 Qe7 (16...Bd6 17.c5 Bc7 18.Rd1+/–) 17.c5 (17.b5 Qc5+/–) 17...a5 (17...h5 18.Ba6 ba6 19.Qc6 Kb8 20.Qa6+–) 18.0-0 f6 19.Qc2+– h5 20.Rfd1 g5 21.Qa4 Qe6 22.Qa5 Be7 23.Qa7 g4 24.hg4 hg4+/– 25.Qa8 Kc7 26.Qa5 Kc8 27.Qa7 g3 28.fg3 Qb3 29.Bc1 Qe6 30.e4 f5 31.ef5 Qf5 32.Bf3 Nb8 33.Be3 Bg5 34.Bf2 e4+= 35.Be2 Bd2 36.Rf1 Qg6 37.Rab1 e3–+ 38.Be1 Rdg8 (39.Bg4 Qg4–+; 38...Rd7 39.Bd2 Rd2 40.Ba6 Na6 41.Qa8 Nb8 42.Qb8 Kb8 43.Ra1 Qg3 44.Rf8 Rf8 45.Re1 Qg2) 0–1. Registration (2375) – Celes (2435), ICC, 2003.

5.h3 Bf3 6.ef3 e5 =.

4.a3 a5 5.d3 (5.e3 ab4 6.ab4 Ra1 7.Ba1 e6=) 5...ab4=+ 6.ab4 Ra1 7.Ba1 Bf3 8.gf3 (8.ef3 e5 9.b5 Bb4 10.c3 Bd6=+) 8...e5 (8...e6 9.Qd2=+) 9.c3 Ne7 10.Nd2 Ng6 11.e3 Bd6 (11...c6 12.Qb3=+) 12.Qb3 c6 13.c4 0-0 14.Bh3 d4 15.Ke2 (15.Kd1 c5=+) 15...Bc7 (15...Kh8 16.Rg1=+) 16.Bb2 (16.Bf5 Nh4 17.Bh3 f5=+) 16...Kh8 (16...f5 17.Nf1=+) 17.Ra1 (17.Bf5 de3 18.fe3 Qg5=+) 17...f5 18.Qd1 Bb8 19.Nb3 Qh4 20.Qf1 Qh5 (20...b5 21.Na5=+) 21.Na5 (21.Nd2 Qg5=+) 21...Nh4 22.Nb7?? (better is 22.Qh1 e4 23.de4=+) 22...Nf3–+ (23.Kd1 de3 24.fe3 Nh2 25.Qe2 Qh3–+; 22...Qf3?! 23.Kd2 g5 24.ed4–/+) 0–1. Waechtler,Frank (2230) – Delemarre,Jop (2435), NRW–Liga I, 1999.

4.a3 Bf3 5.gf3 Ngf6 6.e3 g6 (6...a5 7.f4+=) 7.c4= c6 8.Qb3 Bg7 9.Nc3 (9.d4 h6=) 9...e6 10.f4 0-0 11.cd5 cd5 12.Rc1 Rc8 13.Bg2 Nb6 14.Ne2 Rc1 15.Bc1 Qd7 16.0-0 Rc8 17.Qb1 Ne8 18.Nc3 (18.d3 Qa4–/+) 18...Nd6 19.Bf3 Nf5 20.Bg4 Nd6 (20...Bc3 21.Bf5 gf5 22.dc3–/+) 21.Bf3–+ Na4 (21...Nbc4!? 22.Qb3–/+) 22.Na4–/+ Qa4 23.Bd1 Qc6 24.Bb3 Qb5 25.Re1 Nf5 26.f3 Nh4 27.Bd1 d4 28.Be2 Qb6 (28...d3 29.Bd3 Nf3 30.Kf2–+) 29.Kh1 h5 30.Rf1 Qc7 31.Bb2 (better is 31.Kg1!?–/+) 31...Qc2–+ 32.Bd3?? (32.Bd4 Bd4 33.ed4 Qd2–+) 32...Qb1 (better is 32...Qd2 33.Rg1 de3 34.Bg7 Nf3–+) 33.Bb1 (33.Rb1 de3 34.Bg7 Kg7 35.de3 Rc3–+ (35...Nf3?! 36.Be4 Nd2 37.Bb7–/+)) 33...de3 34.Bg7 e2 (34...ed2?! 35.Bb2 Nf3 36.Rd1=) 35.Re1 Kg7 36.Be4 b6 (better is 36...Rc7!?–+) 37.Kg1–/+ Kf6 38.Kf2 Nf5 39.Ke2 Nd4 40.Kf2 Ke7 41.Rb1 Kd6 42.Re1 Nb5 43.Ra1 Rc7 44.Ke3 Ke7 45.Bd3 Nd6 46.Kf2 Ne8 47.Ke2 Nf6 48.Be4 Kd6 49.Kd3 Ng8 50.Kd4 Ne7 51.b5 Rc5 52.a4 g5 (52...h4 53.Rg1–/+) 53.Ke3 (53.fg5 Rg5 54.f4 Rg4–/+) 53...g4 (53...f5!? 54.d4 gf4 55.Kf4 Rc4–/+) 54.d4+= Rc8 55.fg4 hg4 56.Kd3 f5 57.Bg2 Ng6 58.Rf1 Rh8 59.Bc6 Rh2 60.Be8 Ne7 61.Bf7 Nd5 62.Be8 Ra2 0–1. De Poi,Paolo (2220) – Golubovic,Boris (2425), Trieste op–A, 2004. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7)

4.a3 g6 5.c4 Bg7 6.cd5 0-0 7.Nc3 Nd5 8.Nd5?! Bb2 9.Rb1 Bg7 10.e3 c6 0.54/0 11.Nc3 0.68/0 11...e5 0.46/0 12.Bc4 0.06/0 12...Qe7 0.62/0 13.h4 -0.97/0 13...a5 0.69/0 14.h5 0.93/0 14...ab4 0.46/0 15.ab4 0.57/0 15...Nb6 0.79/0 16.Bb3 0.72/0 16...Be6?! 0.02/0 17.hg6 0.09/0 17...hg6 0.06/0 18.Ne4?! 0.07/0 18...Bb3 0.26/0 19.Qb3 0.32/0 19...Nd5 0.06/0 20.Nfg5?! 0.84/0 20...Ra6?! 0.00/0 21.Ke2?! 0.82/0 21...Rfa8?! 0.00/0 22.Nf3? -0.78/0 22...Qd7? 1.55/0 23.Nc5 1.68/0 23...Qg4 1.56/0 24.Na6 1.83/0 24...Ra6 2.11/0 25.Rh4 2.15/0 25...Qg2?? 6.44/0 26.Rg1 Normal 6.52/0 1-0. FeegLood (2530) - K_Abad (2365), Rated Bullet game, lichess.org, 2015.

4.b5 c6 5.a4 Ngf6 6.e3 e6 7.Be2 Bd6 8.c4 0-0 9.0-0 e5 (9...Bf3 10.Bf3 dc4 11.bc6 bc6 12.Na3=+) 10.d4 e4 11.Ne5 Be2 12.Qe2 Rc8 13.Nd2 Re8 14.bc6 bc6 (14...Ne5 15.de5 Be5 16.cb7=) 15.cd5 (15.Nd7 Qd7 16.c5 Rb8=+) 15...cd5=+ (worse 15...Nd5 16.Ne4 Be5 17.de5 Ne5 18.Rfd1=) 16.Rfc1 Qb6 (16...Ne5 17.de5 Be5 18.Be5 Re5 19.Nb3-/+) 17.Nf1 (17.Nd7 Nd7 (worse 17...Qb2 18.Nf6 gf6 19.Rcb1+/-) 18.Qb5 Nf6=+) 17...Bf8 (17...Rc1 18.Rc1 Ne5 19.de5 Be5 20.Be5 Re5 21.Qb5-/+) 18.Ng3 Ne5 19.de5 Nd7 20.Bd4 Qa5 (20...Qe6 21.Nh5=) 21.Qg4 (better 21.Rc8 Rc8 22.Qb5 Qb5 23.ab5+=) 21...Rc1=+ (21...Re5?? 22.Rc8 Nf6 23.Qh4+-) 22.Rc1 Ne5 23.Be5 Re5 24.h4 (24.Qd1 Re8-/+) 24...Qd2 (24...Qa4!? 25.Nf5 g6-+) 25.Rc8-/+ Qe1 26.Nf1 Re6 27.Rc2 (27.Qg3 Qb4-/+) 27...Qb1 28.Qe2 h6 29.Rd2 Bb4 (29...Qa1!?-/+) 30.Rd5= Rc6 (30...Be7 31.Rd7=) 31.Rd8 Kh7 32.Qg4 Rg6? (better 32...Rf6 33.Qc8 Kg6+=) 33.Qc8+- Rf6?? (better 33...Re6 34.h5 g6 35.Rh8 Kg7 36.Qg8 Kf6+-) 34.h5 (34.h5 Bf8 35.Rf8 Qf1 36.Kf1 Rf2 37.Kf2 a6 38.Rh8; 34.Rh8 Kg6 35.Qg4) 1-0. BeepBeepImAJeep - minumano (2145), lichess.org, 2017.

4.b5 e6 5.a4 Ngf6 6.e3 Bd6 7.c4 0-0 8.Be2 Re8 9.cd5 ed5 10.0-0 a6 11.Nc3 ab5 12.ab5 Ra1 13.Qa1 Nc5 14.h3 Bh5 15.Nd4 Be2 16.Nce2 Nd3 17.Nf5 Nb2 18.Qb2 Be5 19.d4 Bd6 20.Nd6 Qd6 21.Ra1 Ne4 22.Nc3 Nf6 (22...f5 23.Qb3 Nc3 24.Qc3=) 23.Qb3 h5 24.Ra7 Qb6 25.Qa3 c6 26.bc6 Qc6 27.Qb3 Rc8 28.Ne2 Rc7 29.Nf4 g6 30.Nd3 Ne4 31.Ra1 Qc3 (31...Kh7 32.Nf4+=) 32.Qc3 (32.Ra8 Kh7 33.Qd5=) 32...Rc3 (32...Nc3 33.Ra7+=) 33.Nb4+/- Rc2?? (better 33...Nf6 34.Ra5 Rc1 35.Kh2 h4+=) 34.Nc2+- 1-0. Timmermans,Mark (2385) - Bartel,Mi (2245), Titled Tuesday, 2021.

4.b5 Bf3 5.ef3 e5 6.c4 d4 7.a4 Bc5 8.d3 (8.Bd3 Qg5 9.0-0 Ngf6=+) 8...Ne7 9.Be2 Ng6 10.0-0 0-0 11.Nd2 f5 12.a5 Qe7 13.a6 b6 14.Nb3 Bb4 15.Qc1 (15.Bc1 Bc3 16.Rb1 Rae8=+) 15...Rac8=+ 16.Ba3 (16.Qd1 c6-/+) 16...Ba3 (16...Nf4!? 17.Bd1 Nd3 18.Qb1-/+) 17.Qa3 Qa3 18.Ra3 c5 (18...c6 19.bc6 Rc6 20.g3-/+) 19.bc6 (19.Re1 Rce8=+) 19...Rc6-/+ 20.g3 Re8 21.Re1 Nc5 22.Bf1 Nb3 23.Rb3 Nf8 (23...Kf7 24.h4=+) 24.Rb5= Nd7 (24...Rce6!?=) 25.Rd5+= Rc7 26.f4 Kf7 (better 26...e4!?+=) 27.fe5+- Ke6 (27...h6 28.Bh3 g6 29.f4+-) 28.Rd4 Rc5 (28...Nc5 29.Rh4 Na6 30.d4+-) 29.f4 Ra5 30.Rd6 Ke7 31.Bg2 Ra6 32.Bc6 Rd8 33.d4 Ra4?? (33...Ra2+-) 34.Ba4 1-0. BeepBeepImAJeep - Fightos (2395), lichess.org, 2016.

4.b5 f6 5.a4 (5.h3 Bf3 6.ef3 e5=) 5...e5=+ 6.h3 Bh5 7.g4 Bf7 8.d3 Bc5 9.Nbd2 Ne7 10.Bg2 0-0 11.c4 c6 12.0-0 Re8 13.Re1 Nf8 (13...cb5 14.cb5 Rc8 15.a5=+) 14.e3 Ne6 15.Qb3 a6 16.cd5 (16.g5 dc4 17.Qc4 cb5 18.ab5 A) worse 18...fg5 19.Ne5 (19.Be5?! Rc8+=) 19...ab5 20.Qb5+/-; B) 18...Qb6 19.gf6 Nf4 (19...gf6? 20.Ne4 Nd4 21.Qc5 Qc5 22.Nc5+-; worse 19...ab5 20.Qg4 h5 21.Qg3+-) 20.Qf7 Kf7 21.Ne5 Ke6+=) 16...cd5 (16...Nd5 17.Ne4=+) 17.d4= ed4 18.Nd4 Bd4 19.ed4 Nf4 20.Bf1 Qd7 21.Nf3 h5 22.Nh2 Neg6 23.Bc1?? (23.gh5 Nh5 24.Rac1 Nhf4=) 23...Qd6 (better 23...Re1 24.Bb2 Rae8-+) 24.Bd2 ab5 25.ab5 Ra1 26.Ra1 Ne2 27.Be2 Re2 28.Be3 (28.Ra8 Kh7 29.Nf1 Qe6=) 28...hg4 (28...Nf8 29.Nf1 hg4 30.hg4+=) 29.hg4 (29.Qd3 Re3 30.Qe3 gh3 31.Ra8 Nf8 32.Qh3+/-) 29...Nf4? (29...Nf8 30.Nf1 Qc7 31.Ng3+=) 30.Qd1 (better 30.Kf1 Re3 31.fe3+-) 30...Nh3?? (30...Rb2 31.Ra8 Kh7=) 31.Kg2+- Rf2?! (31...Qe6 32.Kh3 Rb2 33.Ra8 Be8 34.Qd3+-) 32.Bf2 Nf2 (32...Nf4 33.Kf3 Bg6 34.Bg3 Be4 35.Ke3+-) 33.Qf3 (33.Ra8 Be8 34.Qe1 Ne4 35.Re8 Kf7 36.Re4 de4 37.Qe4 b6+-) 33...Ne4 (33...Be8 34.Qf2 (34.Kf2?! Qh2 35.Ke3 Qh6 36.Qf4 Qf4 37.Kf4 Bb5=) 34...Bb5 35.Qf5+-) 34.Ra8 Kh7 (34...Be8 35.Re8 Kf7+-) 35.Qh3 Kg6 36.Qh5 1-0. BeepBeepImAJeep (2585) - Prikolica (2640), lichess.org, 2018.

4.Nc3 c6 5.h3= Bf3 6.ef3 e5 7.a3 Ngf6 8.Be2 Bd6 9.0-0 0-0 10.Re1 Re8 11.d4 ed4 (11...Qb6 12.de5 Be5 13.Qd2=+) 12.Qd4= Nh5 (12...Qb6 13.Qh4=) 13.g3 (13.Rad1 Nf4 14.Bf1 Qg5 15.Re8 Re8=+) 13...Be5 14.Qd2 Qf6 (14...Nhf6 15.Bd3=) 15.f4+= Nf4 (15...Bc3 16.Qc3 Qc3 17.Bc3+=) 16.gf4+/– Bf4 17.Qd1 Qh4 (17...Rad8 18.Bg4 Re1 19.Qe1+=) 18.Kg2 Re5 19.Qd4 Rg5 20.Bg4 Be5 21.Qd2 Rg4 (better is 21...Nf6 22.Re5 Re5–/+) 22.hg4+/– Qg4 23.Kf1 Qh3 24.Ke2 Qh5 25.f3 Re8 26.Kd1 Qf3 27.Kc1 Nf6 (better is 27...Bf4!? 28.Re8 Nf8=+) 28.Kb1+= Bc3 (28...Re6 29.Nd5 Bb2 30.Ne7 Kf8 31.Qd8 Ne8 32.Re6 fe6 33.Kb2 Qf6 34.c3 a5+–) 29.Re8+/– (< 29.Bc3 Ne4 30.Kb2 Kf8+=; 29.Qc3?! Qc3 30.Re8 Ne8 31.Bc3 g5+=) 29...Ne8 30.Bc3 (30.Qc3?! Qc3 31.Bc3 g5+=) 30...Nd6 31.Qd4 (31.Qh2 Qc3 32.Qd6 h6+/–) 31...f6 32.Qa7 Nc4? (better is 32...Qc3 33.Qb8 Kf7 34.Qd6 d4+/–) 33.Qb8+– Kf7 34.Qb7 Kg6 35.Bb2 Qd1 (35...d4 36.Ka2 Kh6 37.Bc1 Ne3+–) 36.Ka2 Qc2 (36...Qg4 37.Qa7 c5 38.Qc5 Qd7+–) 37.Rg1 Kf5 (37...Kh5 38.Qf7 Qg6 39.Rg6 hg6+–) 38.Qd7 Kf4 39.Qg4 Ke3 40.Qh3 (40...Ke4 41.Rg4 Kf5 42.Rg3 Ke4 43.Qg4) 1–0. mrkt (2310) – Gryfffe (2175), ICC, 2003.

4.Nc3 Ngf6 5.h3 Bf3 6.ef3 =+.

4.c4 a5 5.ba5 Ra5 6.cd5 Ngf6 +=.

4.c4 e5 5.cd5 Ngf6 6.Ne5 Ne5 7.Be5 Nd5 8.a3 Qg5 9.d4 f6 10.Bg3 0-0-0 11.Qd2 Bd6 12.Qg5 fg5 13.e3 Rhe8 14.Bb5 c6 15.Bd6 Rd6 16.Bd3 Rf6 17.h3 Nf4 18.Bf1 Bh5 19.Nc3 Kd7 20.b5 Kc7 21.Rc1 Kd7 22.bc6 bc6 23.Na4 Kd6 24.Nc5 Rff8 25.Rh2 h6 26.Kd2 Nd5 27.g3 Bf3 28.Be2 Be2 29.Ke2 Rb8 30.Rc2 Rb1 31.Rg2 a5 32.Kd2 Rf1 33.Nd3 g4 34.hg4 Nf6 35.Ke2 Ra1 36.Nb2 c5 37.dc5 Kc6 38.Nc4 a4 39.f4 Ng4 40.Kf3 h5 41.Rgd2 Rf1 42.Ke4 Nf6 43.Ke5 Re8 44.Kf5 Ne4 45.Rd4 Ng3 46.Kg6 Kc7 47.Rd6 Ne4 48.Kf7 Rb8 49.Rd4 Rf2 50.Rf2 Nf2 51.f5 Ng4 52.Kg7 Kc6 53.f6 Kc5 54.Rf4 Nf6 55.Kf6 Rf8 56.Kg5 Rf4 57.ef4 Kd4 58.f5 h4 59.Kh4 Kd5 60.Ne3 Kd6 61.Kg5 Ke7 62.Kg6 Kf8 63.f6 Ke8 64.f7 Ke7 65.Kg7 Ke6 66.f8Q Kd7 67.Nc4 Kc6 68.Qd6 Kb7 69.Qd7 Ka6 70.Qc6 Ka7 71.Qc7 Ka6 72.Qb6 1–0. OrangoTango (2335) – WilGER (2360), 2003.

4.c4 Bf3 5.gf3 e6 6.cd5 ed5 7.Qb3 Ngf6 8.Rg1 Rg8 9.Bh3 Bd6 10.Bd7 Kd7 (< 10...Nd7 11.Qd5 (< 11.Rg7 Rg7 12.Bg7 Qh4 13.Qe3 Kd8=+) 11...Qh4 12.Qb7+/– (12.Bg7? Qh2 13.Rf1 Rg7–+)) 11.Bd4 c6 12.Nc3 Ne8 13.e4 Qe7 14.b5 Nc7 15.bc6 bc6 16.Qa4 (16.Rg7? Rg7 17.Bg7 Qg5 (17...Bh2?! 18.Rb1=+) 18.ed5 Qg1 19.Ke2 Qa1 (19...Qg7?! 20.dc6 Ke8 21.Re1–/+) 20.dc6 Kc6 21.Qa4 Kb7 22.Qb3 Kc8 23.Qf7 Qb2–+ (23...Bh2?! 24.Qf8 Kb7 25.Qb4 Kc8 26.Qf8 Kb7 27.Qb4 Kc8 28.Qf8=)) 16...Bh2 17.Rh1 (17.Rg7? Rg7 18.Bg7 Rg8–+) 17...Be5 18.Be5 Qe5 19.Rc1 Rac8 20.d4 Qg5 21.Ne2 Ne6 22.Rh7 Rc7 23.Kf1 Rb8 24.Rd1 Rb2 25.Rh2 f6 26.Rh7 (26.Ke1 Nf4 27.Ng3 Rcb7=+) 26...Rcb7 27.Nc3 (27.Rc1 Nd8 28.ed5 Qd5 29.Rg7 Kc8 30.Rb7 Kb7 31.Rc4=) 27...R2b4 28.Qa6 R4b6 29.Qa3 Ke8 (29...Nf4!? 30.Rh2 Rb4–/+) 30.Rh8 Kf7 31.Qd6 ½–½. Taulien,Hans_Juergen (2225) – Hoch,Hubertus (2165), RSX9E – A00 – Sokolsky–2, 2004.

4.d3 e6 5.Nbd2 Ngf6 (5...Bb4?? 6.Bg7 Bf3 7.ef3+- (7.Bh8?! Bh5+-)) 6.b5 c5 7.g3 Be7 8.Bg2 0-0 9.0-0 a6 10.a4 ab5 11.ab5 Qc7 12.c4 Rfd8 13.Qc2 Bd6 14.Ra8 Ra8 15.Ra1 Ra1 16.Ba1 Qa5 17.Bc3 Qa3 18.h3 Bh5 19.Qb2 Qa7 20.Qa1 Qa1 21.Ba1 Kf8 22.Bb2 Ke7 23.Kf1 Kd8 24.Ke1 Kc7 25.Kd1 Kb6 26.Bc3 Ne8 27.g4 Bg6 28.Nh4 d4 29.Bb2 (worse is 29.Ng6 dc3 (worse is 29...hg6 30.Bb2+=) 30.Nh8 cd2 31.Nf7 Bc7+=) 29...f6 30.Ng6 hg6 31.Ne4 ½–½. Piriyev,M (2015) – Gnichtel,G (2225), 23rd ECC Men, Kemer TUR, 2007.

4.d3 Ngf6 5.Nbd2 e6 6.a3 c5 7.bc5 Bc5 8.e3 0-0 9.Be2 a6 10.0-0 Qb6 11.Nb3 Bd6 12.Bd4 Qc7 13.h3 Bh5 14.Nfd2 b5 15.c4 e5 16.Bb2 bc4 17.dc4 e4 18.Nd4 Bg6 19.cd5 Nd5 20.Rc1 Qb7 21.Nc4 Ne5 22.Nd6 Qb2 23.N4f5 Nc3 24.Ne7 Kh8 25.Ng6 Ng6 26.Rc3 Qc3 27.Qd5 Ra7 28.Bc4 Rd7 29.h4 Rd6 30.Qd6 Qc4 31.h5 Qd3 32.Qd3 ed3 33.hg6 hg6 34.Rd1 Rd8 35.Kf1 Kh7 36.f3 Kh6 37.Kf2 Kg5 38.f4 0–1. Moreno Guerrero,I – Ramos Vega,JL, Equador (?), 1993.

4.d4 c6 5.e3 Ngf6 6.Be2 e6 7.a3 Bd6 8.Nbd2 0-0 9.c4 Ne4 10.Ne4 de4 11.Nd2 Be2 12.Qe2 f5 13.0-0 Nf6 14.f4 ef3 15.gf3 (15.Nf3 Qe8=) 15...Qe7 16.c5 Bc7 17.a4 (17.f4 Nd5=+) 17...e5 (17...Nd5!?–/+) 18.b5 (18.de5 Be5 19.Be5 Qe5=+) 18...ed4 19.Bd4 Rad8 20.Rfe1 Nd5 21.Nc4 f4 (21...Nf4!? 22.Qa2 Ne6=+) 22.e4= Nb4 23.Qd2 (better is 23.Rad1!?+=) 23...Nc2=+ 24.Qc2 Rd4 25.Nb2 Rfd8 26.Rad1 Ba5 (26...Be5 27.Nd3=+) 27.Rd4= Rd4 (< 27...Be1 28.Rd8 Qd8 29.bc6 bc6 30.Nd3+/–) 28.Rd1 Qe5 29.Rd4 Qd4 30.Kg2 g5 (30...Kh8 31.Nd3 Qd8 32.Qb3+=) 31.bc6 bc6 32.Qb3 Kf8 33.Qb8 Bd8 34.Nc4 Qc4 35.Qd8+/– Kf7 36.Qd7 Kf8 37.Qd8 Kf7 38.Qd7 Kf8 39.Qf5 Ke8 40.Qe5 Kf7 41.Qc7 Kf8 42.Qc6 (42.Qa7?! Qe2 43.Kg1 Qe3 44.Kg2 Qe2 45.Kg1 Qe3 46.Kg2 Qe2=) ½–½. Grube,Joerg (1870) – Sperlich,Stefan (1910), Ruhrgebiet VK1, 2003.

4.d4 Bf3 5.ef3 a5 6.ba5 Ra5 7.Bd3 e6 8.0-0 Bd6 9.Nd2 Ngf6 10.c4 b6 11.cd5 Nd5 12.Nc4 Nf4 13.Na5+/– Ng2 14.Nb7 Bh2 15.Kg2 Qg5 16.Kh1 Qh4 17.Kg2?? (17.f4 Bf4 18.Kg2 Qh2 19.Kf3+-). Gappel,R – Reimann,Andreas, corr DDR, 1990.

4.e3 f6 5.Be2 e5 6.h3 Bh5 7.a3 Bd6 8.d3 Ne7 9.Nbd2 0-0 10.0-0 c5 11.bc5 Nc5 12.Nb3 (12.c4 e4 13.Ne1 Be2 14.Qe2 Qa5=) 12...Qb6 13.Rb1 (13.Nc5 Qc5 14.Qd2 Rac8+=) 13...Nb3 (13...Na4!?–/+) 14.cb3+= Bc5 (14...Rac8 15.b4+=) 15.b4 (15.d4!? Bd6 16.de5 fe5 17.Ne5 Be2 18.Qe2 Qb3 19.Bd4+/–) 15...Bd6= 16.Nd2 Bg6 17.Qb3 Kh8 18.e4 de4 (18...a5!?+=) 19.de4+= Rac8 20.Nc4 Qc7 21.Nd6 Qd6 22.f3 (22.Qe3!?+=) 22...Qd2 23.Qd1 Qf4 (23...Rfd8 24.Qe1=) 24.Bc1 Qg3 25.Be3 Nc6 26.Rc1 Rcd8 27.Qe1 Qe1 28.Rfe1 Nd4 29.Bd4 Rd4 30.Red1 Rfd8 31.Kf1 h6 32.Kf2 f5 33.ef5 Bf5 34.Ke3 g5 35.Rd4 Rd4? 36.Rd1 Rd1+= 37.Bd1 Kg7 38.Be2 Kf6 39.Bd3 Bd3 40.Kd3 Kf5 41.g3 h5 42.Ke3 b5 43.g4 hg4 44.hg4 Kf6 45.Ke4 a6?? 46.Kd5+- e4 47.fe4 Kf7 48.e5 Ke7 49.e6 Ke8 50.Kd6 Kd8 51.Ke5 Ke7+- 52.Kf5 Kf8 53.Kg5 Ke7 54.Kf5 Kf8 55.Kf6 Ke8 56.e7 Kd7 57.Kf7 (57.Kf7+-) 1–0. Fournier,Frederic – ekesko, Club Owl21 Owl21.com, 2007.

4.g3 Bf3 5.ef3 e5 6.a3 Ngf6 7.Bg2 (7.Bh3 Bd6=) 7...Bd6 8.0-0 0-0 9.d3 a5 10.b5 a4 (10...Nc5 11.c4=) 11.Nd2 (11.Re1 Ra5 12.c4 Nc5=) 11...Nc5 (11...Re8 12.Re1=) 12.d4 ed4 13.Bd4 Qd7 (13...Ne6!? 14.Bb2 Nc5=) 14.Bf6+= gf6 15.f4 Rfd8 (better is 15...Rae8!?+=) 16.Qh5+/– Bf8 17.Rab1 Ne6 18.c4 Ba3 19.cd5 (19.Bd5 c6 20.bc6 bc6+-) 19...Ng7+= 20.Qf3 Be7 21.Rfe1 (21.b6 a3 22.Ra1 cb6=) 21...a3= 22.Qb3 a2 (22...Nf5!?=) 23.Ra1+= Ra3 (23...Nf5 24.Ra2 Nd4 25.Qc4 Ra2 26.Qa2 (worse is 26.Qd4 h6+=) 26...Nb5 27.Qb2+=) 24.Qb2 (24.Qc2!? Bb4 25.Ra2 Ra2 26.Qa2 Bd2 27.Qd2 Qb5 28.Qc2+/–) 24...Rda8+= 25.Ne4 Attacking the isolated pawn on f6 (25.b6 R3a6+=) 25...Ne8 (better is 25...f5!? 26.d6 cd6 (worse is 26...fe4 27.de7 f5 28.Bf1+/–) 27.Nf6 Bf6 28.Qf6 Qb5=) 26.Nc3+= Nd6 Exerts pressure on the isolated pawn 27.Ra2 (27.b6 cb6 28.Ra2 Ra2 29.Na2 b5+=) 27...Ra2= 28.Na2 Nb5 29.Nc3 (29.Bh3 Qd8+/– (29...Qd5? 30.Re7 Nd4 31.Nc3+-)) 29...Nc3+= 30.Qc3 Kg7 31.Be4 Re8 (31...Ra3 32.Qc2+=) 32.Qc2 (32.Qd3 Bc5+/–) 32...h6 33.Rd1 Bd6 34.Bf5 Qb5 35.Kg2 (35.Bg4 Qc5 36.Qd3 Qb4=) 35...Re2 36.Rd2 Re1 37.Rd1?? (better is 37.Qd3 Qd3 38.Bd3=) 37...Qf1–+ 38.Kf3 Rd1 39.Kg4 (39.Qe2 Qh1 40.Kg4 Rd5–+) 39...Rd5 40.f3 (40.h4–+) 40...h5 41.Kh4 Qf3 (better is 41...Bf4 42.Qe4 Qf2 43.Qf4 Rf5 44.Qf5 Qh2 45.Qh3 Qh3 46.Kh3–+) 42.Bd3 0–1. Ivanets,Vladimir (2110) – Kozlov,Sergej A (1950), Voronezh RUS, 2014.

5.d3 Ngf6 6.Nbd2 c6 7.h3 Bf3 8.Nf3 Be7 9.e3 0-0 10.Be2 a5 11.b5 (11.Qd2 ab4 12.ab4 Qb6+=) 11...cb5–/+ 12.Nd4 b4 13.a4 Ne8 14.0-0 Bf6 15.f4 (15.c4 Bd4 16.ed4 Rc8–/+) 15...Nd6 16.Bg4 White intends f5 16...Nc5 17.Ra2 Qd7 18.Qa1 b6 19.f5 ef5 20.Rf5? (20.Nf5 Bb2 21.Qb2 Nf5 22.Bf5 Qe8–+) 20...Qe7 (better is 20...Bd4 21.ed4 Nf5 22.dc5 bc5 23.Bg7 Rfe8–+) 21.Rf3 Bd4 22.Bd4 f5 23.Bh5 Qg5 (23...g6!? 24.Rg3 f4 25.ef4–+) 24.Be5 Qh5 25.Bd6 Rf6 26.Qe5 Qf7 27.Qf4 (27.Be7 Re8 28.Bf6 Re5 29.Be5 Qd7–+) 27...Nd7 28.Qh2 (28.Rb2 Re6 29.Ra2 Rc8–+) 28...Re8 29.Ra1 Ree6 (29...d4!? 30.Re1–+) 30.Bf4–/+ Qe8 31.Bg5 Rf7 32.Raf1 h6 33.Bh4 Re3 34.Rf5 Rf5 35.Rf5 Qe6 36.Rf1 Qe5 37.Qe5 Re5 38.Rf2 (38.Bf2 Re6–+) 38...g6 (38...Nc5!? 39.Bg3 Re3 40.Bc7 Na4 41.Kf1–+) 39.g4 Kg7 (39...Re6!? 40.d4–+) 40.Kg2–/+ Re6 41.d4 Nf6 42.Bf6 Rf6 43.Re2 Rc6 44.Kf3 (44.h4 Rc4 45.Rd2 Rc7–+) 44...g5 45.h4 (better is 45.Kg2!?–+) 45...Rc3 46.Kf2 (46.Kg2 gh4 47.Kh2 Kf6–+) 46...gh4 47.Ke1 h3 48.Kd1 (48.Kd2–+) 48...Rg3 49.Rh2 Kg6 (49...Rg1 50.Ke2 Rg2 51.Rg2 hg2 52.Kf2–+) 50.Kc1 (50.Rh1 Kg5–+) 50...Kg5 (worse is 50...Rg4 51.Rh3 Rd4 52.Rg3 Kh7 53.Rh3–+) 51.Rf2 Rg2 (51...Rg2 52.Rf3 Kg4 53.Rh3 Rc2 54.Kc2 Kh3–+) 0–1. Koroljkov,A – Malov,Lev (2030), RUS–ch Seniors, 2009.

5.e3 Ne7 6.Be2 Nf5 7.h3 Bf3 8.Bf3 Be7 9.0-0 c6 10.Bg4 0-0 11.Bf5+= ef5 12.Qf3 g6 13.d3 Bf6 14.d4 Nb6 15.Nd2 a5 16.Rfb1 ab4 17.ab4 Re8 18.Ra8+= Qa8 19.Ra1 Na4 20.Nb3 b5 21.Nc5 Be7 22.Bc3+= Bc5 23.dc5 Re4 24.Qg3 Qe8= 25.Bd4 f4 26.Qg5 fe3 27.Qf6 ef2 28.Kf2 Kf8 29.Rf1 Re6 30.Qh8 Ke7 31.Qh7 Re4 32.Qg7 Qf8 33.Qf6 Kd7 34.Kg1 Qe8 35.Qg7 Re1 36.Re1 Qe1 37.Kh2 Qe8 38.Be5 Qe7 39.Bd6 Qe8 40.Bg3 Qe6 41.Bh4 Qf5 42.Bg3 g5 43.Qg8+/– d4 44.Qg7 Nc3 45.Qd4 Nd5 46.c4 bc4 47.Qc4 Ne3 48.Qd4 Nd5 49.Bd6 Ke6 50.Qc4 Kf6 51.b5 cb5 52.Qb5 g4 53.Qb2 Kg6 54.Qe5 gh3 55.Qf5 Kf5 56.gh3 Nb4 57.Kg3 Nc6 58.Kf3 Kg5 59.Bg3 Kf5 60.Ke3 Ne7 61.Kd4 Ke6 62.Kc4 f6 63.Kb5 (63...Nf5 64.Bf2+-) 1–0. Gehrke,Joern (1830) – Henke,Wolfram (1715), DESC, 2002.

5.e3 Ngf6 6.h3 Bf3 7.Qf3 =.

5.Ra2 e6=+ 6.e3 Bd6 7.h3 Bh5 (7...Bf3 8.Qf3 a5 9.b5=+) 8.Be2 0-0 9.0-0 a5 10.b5 e5 11.Nc3 Re8 12.Re1 Nb6 13.d3 Qe7 14.Ra1 Rad8 15.Nd2 (15.g4 Bg6=+) 15...Be2 16.Qe2 Qe6 17.Nd1 (17.e4 d4 18.Nd1 Qd7=+) 17...Na4 (17...c6 18.bc6 bc6 19.e4=+) 18.Nb3 b6 19.e4 d4 20.Bc1 Qd7 21.Rb1 (21.Bg5 Be7–/+) 21...Qb5 22.Bg5 Ba3 23.Bf6 gf6 24.Qg4 Kh8 25.Qh5 Bb4 26.Re2 Qd7 27.f4 ef4 28.Rf2 Qd6 29.Ra1 Nc3 30.Qf7 Re7–+ 31.Qh5 Qe5 32.Qf3 f5 33.ef5 Ne2 34.Kh2 Rde8 35.Nc1 Ng3 36.Qf4 Bd6 37.Qe5 Re5 38.Kg3 Re4 (39.Kf3 Rf4 40.Kg3 Rg8 41.Kh2 Rf2 42.Kg1 Rgg2 43.Kh1 Rc2–+) 0–1. mrkt (2335) – RuffRuff (2350), ICC, 2003.

5.d3 c6 6.Nbd2 a5 7.h3 Bf3 8.Nf3 e6 9.c3 Bd6 10.e3 0-0 11.Be2 Qe7 12.Nd2 Rfd8 13.0-0 e5 14.e4 Nf8 15.Qc2 Ng6 16.Rfe1 d4 (16...Nf4 17.Bf3+=) 17.Qb3 (17.cd4!? ab4 18.ab4 ed4 19.Bd4 Bb4 20.Bb6=) 17...dc3+= 18.Bc3 ab4 19.ab4 Ra1 (19...Nf4 20.Ra8 Ra8 21.Nf3+=) 20.Ra1 Nf4 21.Bf1 Bc7 Exerts pressure on the backward pawn (21...Nd7 22.Ra7 c5 23.Rb7 cb4 24.Bb4 Bb4 25.Qb4 (worse is 25.Rb4 Nh3 26.gh3 Qg5 27.Bg2 Qd2+=) 25...Qb4 26.Rb4+=) 22.Bb2 (22.Qc2 Bb6=) 22...Ne8 (22...Nd7 23.g3 Ne6 24.Nc4=) 23.Nc4= Qg5 24.Kh1 Rd3 25.Ra8 Kf8 (25...Rb3?? 26.Re8) 26.Qc2 Rd7 27.b5 Ne6 28.b6 Bd8 (28...Rd8 29.Ra7 Bb8 30.Rb7+=) 29.Be5+/– f6 30.Bb2 Kf7 31.e5 f5 32.Bc1 Qh4? (better is 32...Qg6+/–) 33.Qf5+- Ke7 34.Be3 Rd1 (34...g6 35.Qf3+-) 35.Nd2 g6 36.Qc2 (36.Qd3 Kf8+-) 36...Qh5 37.Ra7 Qe2 (37...Kf8 38.Rb7 Be7+-) 38.Rb7 Kf8 39.Qc6 Rf1 (39...N8g7+-) 40.Nf1 Qf1 41.Kh2 N8g7 42.Qd7 Kg8 43.Qf7 Kh8 44.Bh6 1–0. Morin,Yves (2200) – Lyell,Mark (2225), FSIM, 2012. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.a3 Ngf6) (same as the game below)

5.d3 c6 6.Nbd2 a5 7.h3 Bf3 8.Nf3 e6 9.c3 Bd6 10.e3 0-0 11.Be2 Qe7 12.Nd2 Rfd8 13.0-0 e5 14.e4 Nf8 15.Qc2 Ng6 16.Rfe1 d4 17.Qb3 (17.ba5 dc3 18.Qc3 Ra6=) 17...dc3+= 18.Bc3 ab4 19.ab4 Ra1 20.Ra1 Nf4 21.Bf1 Bc7 Attacks the backward pawn on d3 22.Bb2 Ne8 23.Nc4 Qg5 24.Kh1 Rd3 25.Ra8 Kf8 (25...Rb3?? 26.Re8 mate) 26.Qc2 Rd7 27.b5 Ne6 28.b6 Bd8 29.Be5 f6 30.Bb2 Kf7 31.e5 f5 32.Bc1 Qh4? (better is 32...Qg6+/–) 33.Qf5+- Ke7 34.Be3 Rd1 35.Nd2 g6 36.Qc2 Qh5 37.Ra7 Qe2 (37...Kf8 38.Rb7 Be7+-) 38.Rb7 Kf8 39.Qc6 Rf1 (39...N8g7 40.Qd6 Kg8 41.Rg7 Kg7 42.b7 Rf1 43.Nf1 Qf1 44.Kh2+-) 40.Nf1 Qf1 41.Kh2 N8g7 42.Qd7 Kg8 43.Qf7 Kh8 44.Bh6 (44.Bh6 Qg2 45.Kg2 Be7 46.Bg7 Ng7 47.Qe7 Kg8 48.Qg7 mate) 1–0. Radlovacki,Jovan (2200) – Tesik,Csaba (2225), First Saturday IM, 2012. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.a3 Ngf6) (same as the game above)

5.d4 e6 6.e3 c6 7.c4 Bd6 8.Nbd2 0-0 9.Be2 (9.h3 Bh5=) 9...Qe7 (9...Ne4 10.h3 Nd2 11.hg4 Nc4 12.Qc2=+) 10.Ne5 (10.h3 Bf5=) 10...Be2 (10...Bf5 11.g4 Bg6 12.Ng6 hg6 13.c5+=) 11.Qe2 Bc7 (11...a5 12.c5 Bc7 13.0-0=) 12.Nd7 (12.0-0 a5=) 12...Nd7 (12...Qd7 13.0-0=+) 13.0-0 f5 14.f4 (14.Rac1 Rf6=+) 14...dc4 (14...Rf6 15.b5=+) 15.Nc4= Nf6 16.a4 (16.Bc3 Rfd8=) 16...Bd6 (16...Rfc8 17.Bc3=) 17.b5 Rac8?? (17...Rfc8 18.Rac1=) 18.h3?? (18.Nd6 Qd6 19.Ba3 c5 20.Bc5 Rc5 21.dc5 Qc5+-) 18...Nd5?? (18...Rfd8 19.Rfc1=) 19.Rf3?? (19.Nd6 Qd6 20.Ba3 c5 21.Bc5 Rc5 22.dc5 Qc5+-) 19...Qd7?? (19...Rfd8 20.Rg3=+) 20.Ne5?? (better 20.Nd6 Qd6 21.Ba3+-) 20...Be5= 21.fe5 cb5 (21...g6 22.Rff1=) 22.ab5= Nc7 (22...b6=) 23.g4 (23.Ra7!? Nb5 24.Ra5=) 23...fg4 (23...Qb5 24.Qb5 Nb5 25.gf5 Rf5 26.Rf5 ef5 27.d5=+) 24.Rg3 (24.Rf8!? Rf8 25.Ra7 gh3 26.b6=+) 24...Nb5 25.Rg4 (25.Qg4 Rc7–/+) 25...Rc7 (25...Qd5 26.Rg2–+) 26.Kh1 (26.Qd3 Rf3 27.Rf1 Rh3–/+) 26...Rd8 (26...Qd5 27.Kh2–+) 27.Rag1–/+ Qc6 (27...g6 28.e4 Qe8 29.Qe3–/+) 28.R4g2 (28.e4 a5=+ (worse 28...Nd4 29.Qg2 Nf5 30.ef5+=)) 28...a6 (28...a5 29.Qe1 b6 30.Qh4–/+) 29.Kh2 Qe4 (29...a5 30.Qg4–/+) 30.Bc1 (30.Rf1 g6–/+) 30...Rf8 (30...g6 31.Qa2 Re8 32.Rf2–/+) 31.Bd2 (31.Qa2 Qc6 32.Bd2–/+) 31...Kh8 (31...Rf3 32.Rf2 Rcf7 33.Rgg2–+) 32.Qh5 (32.Rf1 Rcf7 33.Rf7 Rf7 34.Qg4 Qg4 35.hg4–/+) 32...Rc2 (32...h6 33.Bb4 Rg8 34.Ba5–/+) 33.Bb4 (33.Rf1 Rcc8 34.Qg5 Rg8+=) 33...Rg2 (33...g6!? 34.Qg4 Qg4 35.hg4 Rff2 36.Rf2 Rf2 37.Kg3 Rb2=+) 34.Rg2=+ Qf5 (34...Qf3 35.Qh4 Rg8 36.Qf2 Qf2 37.Rf2=) 35.Qh4= Rc8 (35...Rg8 36.Qe7=) 36.Qe7+= Rg8 (36...g6 37.Qb7 Rc7 38.Qa8 Kg7 A) 39.Qa6?? Nd4 40.Bf8 Qf8–+ (40...Kf8?! 41.Qd6 Re7 42.ed4=); B) 39.Ba5+=) 37.Qb7+- h6 0–1. Chandler,Patrick (2150) – Malek,Daniel (2405), 5. Hofheim Spring Open, 2017. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.a3 Ngf6)

5.e3 a5 6.b5 e6 7.c4 c5 8.bc6 bc6 9.cd5 cd5 10.Bb5 Bd6 11.Bf6 gf6 (11...Qf6 12.d4=+) 12.Nc3= Ke7 (12...Rc8 13.h3 Bh5 14.g4=) 13.Be2 Bf3 14.Bf3 Rb8 15.a4 Rb2 16.Rb1 Qb8 17.Nb5 Rb1 18.Qb1 Bb4 19.Qd1 Nc5 (19...Ne5 20.Be2=) 20.0-0+= Rc8 21.g3 Qb7 22.d4 Nd7 23.Be2 f5 24.Bd3 Nf6 25.Qf3 Qb8 26.Kg2 Rc6 27.Rb1 Rc8 28.Qd1 Nd7 29.Na3 Qd6 30.Nc2 Rc3 31.Bb5 Nb6 (31...Nf6 32.Nb4 ab4 33.Rb2+/-) 32.Ne1 (better 32.Nb4!? ab4 33.Qh5+-) 32...Nc4+= 33.Nd3 Na3 34.Rb2 Nc4 35.Rc2 Qb6 (35...Rc2!? 36.Qc2 Qc7+=) 36.Rc3+/- Bc3 37.Qb3 Bd4 38.ed4 Qd4 39.Nf4 Qe4 40.Kh3 e5? (better 40...Qd4+/-) 41.Nd5!+- Qd5 42.Qc4 (42.Bc4 Qd4+-) 42...Qd6 (42...Qc4 43.Bc4 Kf6 44.Kh4+-) 43.Qc6 (43.Qc3 f4+-) 43...Qd4 (43...Qc6 44.Bc6 Kf6 45.Bd5+-) 44.Kg2 (44.Qc7 Kf6 45.Bc4 Qg4 46.Kg2 e4 47.Qf7 Ke5 48.Qd5 Kf6 49.Qd6 Kg7 50.Qe7 Kh6+-) 44...f4 (44...Qe4 45.Qe4 fe4 46.Kh3+-) 45.Qc7 Kf8 46.Qa5 Qd5 47.Kg1 f3 (47...Kg7 48.Qc3 fg3 49.hg3 Qd1 50.Kh2+-) 48.Qb4 Kg7 49.Bf1 e4 (49...h5 50.a5 e4 51.a6+-) 50.a5 Qe5 51.Qb6 f5 (51...e3 52.fe3 h6+-) 52.a6 f4 Black prepares e3 53.a7 e3 1-0. Utegaliyev,A (2500) - Dauletova,G (2255), Almaty KAZ, 2019. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7)

5.e3 c6 6.Nc3 A) 6...e6 A1) 7.h3 Bf3 8.gf3 Bd6 9.Rg1 0-0 10.Be2 g6 11.f4 Qe7 12.h4 e5; A2) 7.Rg1 Bd6 (7...g6 8.h3 Bf3 9.gf3 Bd6 10.f4 0-0 11.h4 a5 12.b5 e5; 7...e5 8.h3 Be6 9.Ng5 Bd6 10.g4 h6 11.Ne6 fe6 12.g5 hg5) 8.h3 Bf3 9.gf3 0-0 10.h4 Qe7 11.Be2 g6 12.f4 e5; A3) 7.Be2 Bd6 (7...Qc7 8.Nd4 Be2 9.Qe2 e5 10.Nb3 Bd6 11.0-0 0-0 12.h3 Rfe8; 7...Bf3 8.Bf3 Bd6 9.0-0 0-0 10.Be2 Qc7 11.g3 a5 12.b5 h6; 7...a5 8.b5 Bc5 9.h3 Bf3 10.Bf3 Bd6 11.0-0 0-0 12.a4 Qc7; 7...Be7 8.0-0 0-0 9.Nd4 Be2 10.Qe2 e5 11.Nf5 g6 12.Ne7 Qe7) 8.Nd4 Be2 9.Qe2 Nb6 10.d3 0-0 11.0-0 a5 12.b5 c5; B) 6...a5 B1) 7.h3 Bf3 8.gf3 e6 9.Rg1 g6 10.b5 Bd6 11.f4 0-0 12.h4 e5; B2) 7.Be2 e5 (7...e6 8.b5 Bd6 9.bc6 bc6 10.Nd4 Be2 11.Qe2 Qc7 12.f4 Rb8) 8.b5 Bd6 9.h3 Bf5 10.0-0 0-0 11.bc6 bc6 12.Rb1 h6; B3) 7.b5 e5 (7...e6 8.Be2 Bd6 9.bc6 bc6 10.Nd4 Be2 11.Qe2 Qc7 12.f4 Rb8) 8.h3 Bh5 9.Be2 Bd6 10.0-0 0-0 11.Rb1 Rb8 12.Re1 Qe7; C) 6...e5 7.h3 Bh5 (7...Be6 8.Be2 Bd6 9.0-0 h6 10.Na4 0-0 11.Nc5 Bc5 12.bc5 e4; 7...Bf5 8.Bd3 Bd3 9.cd3 Bd6 10.0-0 0-0 11.Rb1 Qe7 12.Qe2 Rfc8) 8.Be2 Bd6 9.0-0 0-0 10.b5 h6 11.Rb1 Rb8 12.Nh4 Be2.

5.e3 c6 6.c4 e6 7.d4 (7.h3 Bf3 8.Qf3 a5 9.b5 Be7 10.d4 0-0 11.Nc3 Rc8 12.c5 b6) 7...Bd6 (7...a5 8.b5 Be7 9.Nc3 0-0 10.h3 Bf5 11.Bd3 dc4 12.Bc4 Nb6; 7...Be7 8.Nc3 0-0 9.cd5 cd5 10.Bd3 a5 11.0-0 e5 12.Be2 ab4) 8.Nbd2 (8.Nc3 0-0 9.h3 Bh5 10.cd5 ed5 11.Be2 Nb6 12.0-0 Nc4) 8...Ne4 (8...0-0 9.h3 Bf5 10.Be2 Ne4 11.Ne4 Be4 12.c5 Bc7) 9.Be2 (9.c5 Bc7 10.Bd3 Nd2 11.Qd2 Qf6 12.Qe2 0-0) 9...Qb8 (9...Nd2 10.Nd2 (10.Qd2 dc4 11.Bc4 0-0 12.Ne5 Bf5) 10...Be2 (10...Bf5 11.g4 Bg6 12.h4 h6) 11.Qe2= 0-0 12.0-0 h6; 9...0-0 10.c5 Bc7 11.h3 Bf5 12.0-0 Ndf6) 10.Ne4 (10.cd5 ed5 11.Ne4 (11.h3 Bf3 12.Bf3 Ng5) 11...de4+= 12.Ng5 Be2) 10...de4 11.Ng5 Bf5 12.Bh5 (12.g4 Bg6) 12...g6 13.g4 Qd8 (13...gh5? 14.gf5 Nf6 15.fe6 fe6 16.Ne6+-) 14.h4 gh5 15.gf5 ef5 16.Qh5 Qf6 17.0-0-0 (17.c5 Bc7+=) 17...h6= 18.Nh3 (18.Ne6 A) worse 18...Qe6 19.d5 cd5 20.cd5+- (worse 20.Bh8 dc4 21.Rhg1 Ke7=+); B) 18...Rg8 19.d5 Ne5=) 18...Rg8 19.f3 (19.Rhg1 Rg1 20.Rg1 0-0-0=) 19...ef3 (19...a5 20.ba5 Ra5 21.Rhg1 Rg1 22.Rg1 Ba3 23.Rg8 Ke7 24.Nf4 Bb2 25.Kb2–+) 20.Qf3 Rg3 21.Qf2 Qe6 22.c5 Bc7 (22...Qe4 23.Qd2 (worse 23.cd6 Rg2–+) 23...Bc7 24.Nf2=) 23.d5 cd5 24.Nf4 Bf4 25.ef4 Re3 26.Rd5 Qe4 27.Rdd1 Ne5 (better 27...Qc4!? 28.Kb1 Re2 29.Qe2 Qe2+-) 28.Be5+- (worse 28.fe5 Re2 29.Qe2 Qe2–/+) 28...Re2 29.Qe2! Qe2 30.Rhe1 Qc4 31.Kb2 Kf8 (better 31...f6 32.Bc3 Kf7+-) 32.Rd7 (32.Rd4 Qb5 33.Rd6+-) 32...Qb5?? (better 32...a5 33.Rb7 ab4 34.Rb4 Qc5=) 33.Bd6+- Kg7 34.Rg1 Kf6 35.Be5 Ke6 36.Rd6 Ke7 37.Bf6 (37.Rh6?! Qe2 38.Ka1 Re8+-) 37...Kf8 38.Bg7 Kg8 39.Rh6 (better 39.Bc3 Kf8 40.Rh6 Qe2 41.Kb3 a5 42.Rh8 Ke7 43.Ra8 a4 44.Ra4 Qe6 45.Kb2 Qe2 46.Ka1 Qc2 47.Re1 Kd7 48.c6 Kc6 49.b5 Kb5 50.Rb4 Ka6+-) 39...Qe2 (39...f6 40.Rh8 Kf7 41.Ra8 Qe2 42.Ka1+-) 40.Ka1 (40.Kb3 f6 41.Bf6 Kf8+-) 40...f6 41.Bf6 Kf8 42.Bb2 (42.Bg7 Ke7 43.Bc3 Rg8+-) 42...Qf2 (42...Re8+-) 43.Rh8 Kf7 44.Rg7 (44.Ra8 Qg1 45.Ka2 Qd1=) 44...Ke6 45.Rg6 (45.Ra8 Qf1 46.Ka2 Qc4 47.Kb1 Qe4 48.Kc1 Qe3 49.Kc2 Qe2 50.Kb3 Qd1 51.Ka2 Qd5 52.Ka1 Qd1 53.Ka2 Qd5 54.Kb1 Qd3 55.Kc1 Qe3 56.Kd1 Qd3 57.Kc1 Qe3=) 45...Ke7?? (45...Kf7 46.Rf6 Ke7 47.Rh7 Ke8+-) 46.Rh7 (46.Ra8?! Qf1 47.Ka2 Qc4 48.Kb1 Qe4 49.Kc1 Qf4 50.Kc2 Qe4 51.Kb3 Qd3 52.Ka4 Qc2 53.Ka5 Qb2+-) 46...Kf8 47.Be5 (47.Ka2 Qf3 48.Rh8 Ke7 49.Ra8 Qd5 50.Kb1 Qe4 51.Kc1 Qe1 52.Kc2 Qe2 53.Kc3 Qf3 54.Kd2 Qf2 55.Kd3 Qf3 56.Kc4 Qe2 57.Kb3 Qd1 58.Kc4 Qe2 59.Kd4 Qe4 60.Kc3 Qe3 61.Kc4 Qe2=) 47...Qe1 48.Kb2 Qd2 49.Kb3 Qd3 50.Ka4 b5 51.Ka5 Qa3 52.Kb5 Qd3 53.Ka4 Qc2 54.Ka3 (54.Ka5 Qa2 55.Kb5 Qe2 56.Kc6 Qa6 57.Kd7 Qg6 58.Rh8 Kf7 59.Ra8 Qe6 60.Kc7 Qe7 61.Kb8 Qe8 62.Kb7 Qb5 63.Kc7 a5+-) 54...Qd3 55.Kb2 Qd2 56.Kb3 Qd3 57.Ka4 Qc2 58.Kb5 Qe2?? (58...Qd3 59.Kc6 Qa6 60.Kd7 Qg6 61.Rh8 Kf7 62.Ra8 Qe6 63.Kc7 Qe7 64.Kb8 Qe8 65.Kb7 Qb5 66.Kc7 a5+-) 59.Kc6+- Qa6 60.Kd7 Qc8? (60...Qg6 61.Rh8 Kf7 62.Ra8 Qe6 63.Kc7 Qe7 64.Kb8 Qe8 65.Kb7 Qb5 66.Kc7+-) 61.Kd6 Qa6 62.c6 Qd3 63.Ke6 Re8 64.Kf6 Qd8 65.Kf5 Qd3 66.Kg5 Qg3 67.Kh5 Re5 68.fe5 Qe5 69.Kh6 ½–½. Zilberman,Yaacov (2485) – Avrukh,Boris (2625), Linares Anibal Open ESP, 2001.

5.e3 c6 6.Be2 A) 6...a5 7.Nc3 (7.b5 e6 8.Nc3 Bd6 9.h3 Bf3 10.Bf3 Ne5 11.0-0 Nc4 12.Rb1 Ba3; 7.h3 Bf3 8.Bf3 ab4 9.ab4 Ra1 10.Ba1 e6 11.b5 Bd6 12.bc6 bc6) 7...e5 (7...e6 8.b5 Bd6 9.bc6 bc6 10.Nd4 Be2 11.Qe2 Qc7 12.f4 Rb8) 8.b5 Bd6 9.0-0 0-0 10.Rb1 Qc7 11.h3 Bf3 12.Bf3 e4; B) 6...e6 B1) 7.0-0 a5 (7...Qc7 8.Nc3 Bd6 9.h3 Bf3 10.Bf3 0-0 11.Re1 h6 12.d4 Nb6; 7...Bf3 8.Bf3 Bd6 9.d4 Nb6 10.Nd2 Na4 11.Qc1 0-0 12.c4 Qe7; 7...Bd6 8.Nd4 Be2 9.Qe2 Nb6 10.Nc3 Nc4 11.Ra2 0-0 12.d3 Nb2) 8.b5 Bd6 9.Nc3 0-0 10.Rb1 Qc7 11.bc6 bc6 12.h3 Bf3; B2) 7.h3 Bf3 8.gf3 a5 9.b5 Bd6 10.Nc3 Qe7 11.Rg1 0-0 12.a4 e5; B3) 7.b5 cb5 (7...Bd6 8.Nc3 0-0 9.0-0 Qc7 10.h3 Bf5 11.Rb1 Rab8 12.Nh4 Nc5; 7...Bf3 8.Bf3 Qb6 9.Nc3 Bd6 10.a4 Ne5 11.a5 Qc7 12.Be2 0-0; 7...Qb6 8.Nc3 cb5 9.Nb5 a6 10.Bf6 Nf6 11.Nc3 Bf3 12.Bf3 Bd6; 7...Bc5 8.Nc3 0-0 9.0-0 Qc7 10.h3 Bf3 11.Bf3 Bd6 12.Rb1 Rab8) 8.Bb5 Bd6 9.Nc3 0-0 10.h3 Bf3 11.gf3 Rc8 12.Rg1 Nb6; B4) 7.Nc3 a5 (7...Qc7 8.Nd4 Be2 9.Qe2 e5 10.Nb3 Bd6 11.0-0 0-0 12.f3 h6; 7...Bd6 8.Nd4 Be2 9.Qe2 Nb6 10.d3 a5 11.0-0 0-0 12.h3 Qd7; 7...Bf3 8.Bf3 Bd6 9.0-0 0-0 10.Be2 Qc7 11.g3 h6 12.Re1 a5; 7...Be7 8.Nd4 Be2 9.Qe2 e5 10.Nf5 0-0 11.0-0 g6 12.Ne7 Qe7) 8.b5 Bd6 9.h3 Bf3 10.gf3 0-0 11.Rg1 Qe7 12.f4 e5.

5.e3 c6 6.h3 Bf3 A) 7.gf3 g6 (7...e6 8.Rg1 Qc7 9.f4 0-0-0 10.b5 cb5 11.Bb5 a6 12.Bd7 Nd7; 7...e5 8.Rg1 g6 9.c4 a5 10.b5 Bd6 11.Nc3 0-0 12.bc6 bc6; 7...Qc7 8.Nc3 g6 9.f4 Bg7 10.Rg1 0-0 11.Qf3 e5 12.f5 a5) 8.Nc3 Bg7 9.Rg1 0-0 10.Bd3 Qc7 11.Rg5 a5 12.Rg3 ab4; B) 7.Qf3 e5= (7...e6 8.c4 Bd6 9.d4 0-0 10.Nc3 e5 11.cd5 ed4 12.ed4 Nd5; 7...Qc7 8.c4 e6 9.cd5 ed5 10.d4 Bd6 11.Nc3 Nb6 12.Bd3 Nc4; 7...a5 8.b5 e6 9.d4 Qb6 10.Nc3 Bd6 11.Bd3 a4 12.Rd1 Ra5) 8.Nc3 Bd6 9.Qg3 0-0 10.Be2 Nb6 11.Qh4 Be7 12.Bd3 g6.

5.g3 a5 6.ba5 (6.Bg2 ab4 (6...Bf3 7.Bf3 ab4 8.ab4 Ra1 9.Ba1 e5=+) 7.ab4 Ra1 8.Ba1 e6 9.b5 Qa8=+; 6.b5 Bf3 7.ef3 e5 8.d4 ed4 9.Bd4 Bc5=+) 6...e6 (6...Bf3 7.ef3 Ra5 8.Be2 e6 9.0-0 Bc5=+) 7.Bg2 Ra5 8.0-0 Bd6 9.d3 0-0 10.Nbd2 (10.c4 dc4 11.dc4 Qa8=+) 10...Nb6 (10...Qe7 11.c4–/+) 11.Ra2 (11.c4 Qe7=+) 11...Na4 (11...Qe7 12.Ne5–/+) 12.Ba1=+ Re8 13.c4 c6 14.h3 Bh5 15.Qb3 Nc5 16.Qc3 (16.Qc2 b5=) 16...Qc7 17.Rb1 Ra4 (17...Rea8 18.Qc1 Ncd7 19.Bb2=+) 18.g4= Bg6 19.Nh4 Rea8 20.Ng6 hg6 21.Qc1 (21.g5 Ne8=) 21...Ncd7 22.e4 (22.Bb2 Bh2 23.Kh1 dc4 24.dc4 Bd6=) 22...dc4 23.Nc4 Bh2 24.Kh1 Bf4 25.Ne3 g5 26.Qb2 (26.d4 e5 27.de5 Ne5=+) 26...b5–/+ 27.Nc2 e5 28.Qc3 Qd6 29.d4 Rc4–+ 30.de5 Ne5 31.Qe1 Nd3 32.Qe2 Ne4! 33.Ne3 Nef2 34.Kg1 Bh2 35.Kf1 Rf4 36.Bf3 Qh6 37.Ng2 Qh3 (38.Qf2 Nf2–+) 0–1. babyl – marekt, ChessWorld.net, 2008.

5.g3 e6 6.e3 a5 7.b5 Bd6 8.h3 Bh5 9.c4 e5 =+.

5.g3 e6 6.e3 Bd6 7.h3 Bh5 8.g4 Bg6 9.g5 Nh5=+.

5.g3 Bf3 6.ef3 e5 7.d4 Bd6 8.Bd3 0-0 9.0-0 a5=+.

5.g3 Bf3 6.ef3 e5 7.Bg2 a5 8.d3 (better 8.f4 ef4 9.0-0-/+) 8...Bb4?? (8...ab4 9.0-0-/+) 9.c3?? (9.ab4 ab4 10.Ra8 Qa8+/-) 9...Ba3?? (better 9...Bd6-+) 10.Ba3+/- Qb8 (10...c5!?+/-) 11.Kd2 (11.f4 c5+/-) 11…Kd8 1-0. opperwezen (2705) - yasser_seirawan (2510), lichess.org, 2018.

5.g3 Bf3 6.ef3 e6 7.Be2 c5 8.b5 c4 9.0-0 Qa5 –/+.

6.Nbd2 a5 7.b5 Bc5 8.e4 de4 (8...0-0 9.e5 Ne8 10.Be2 c6 11.d4 Be7 12.bc6 bc6 13.Rb1 Rb8=; 8...d4 9.Be2 e5 10.c3 dc3 11.Bc3 Qe7 12.Nc4 Bf3 13.Bf3 a4=) 9.Ne4 Ne4 10.de4 0-0 11.Be2 Qe7 12.Qc1 Bf3 13.Bf3 e5=.

6.Nbd2 a5 7.b5 c6 8.bc6 (8.h3 Bf3 9.bc6 bc6 10.Nf3 Bd6 11.e3 0-0 12.c4 Rb8 13.Qc2 Qb6=+) 8...bc6 9.Rb1 Bd6 10.Nd4 e5 11.h3 ed4 12.hg4 0-0 13.g5 Ng4=+.

6.Nbd2 a5 7.b5 Bd6 A) 8.e4 0-0 (8...e5 9.ed5 Nd5 10.h3 Bf5 11.Nc4 0-0 12.Qd2 Re8 13.Be2 Nf4=; 8...c6 9.Qe2 e5 10.h3 Bf3 11.Qf3 0-0 12.Be2 cb5 13.ed5 b4=; 8...de4 9.Ne4 Ne4 10.de4 0-0 11.h3 Bh5 12.Qd4 e5 13.Qe3 Qf6=; 8...Qe7 9.Be2 e5 10.ed5 Nd5 11.0-0 0-0 12.Re1 Nf4 13.Ne4 Rfe8=) 9.Be2 Bf3 10.Bf3 c6 11.Qe2 Qc7 12.c4 cb5 13.cb5 Rac8=+; B) 8.h3 Bf3 9.Nf3 0-0 10.e3 c6 11.bc6 bc6 12.c4 Rb8 13.Rb1 Rb6=+; C) 8.e3 c6 (8...0-0 9.h3 Bh5 10.Be2 e5 11.0-0 c6 12.c4 cb5 13.cd5 Nd5=; 8...e5 9.h3 Be6 10.Ng5 Bf5 11.c4 c6 12.d4 ed4 13.Bd4 c5=; 8...a4 9.Be2 0-0 10.0-0 c6 11.bc6 bc6 12.h3 Bf3 13.Nf3 Qe7=; 8...c5 9.Be2 0-0 10.0-0 Bf3 11.Nf3 Qc7 12.c4 dc4 13.dc4 e5=) 9.bc6 bc6 10.h3 Bf3 11.Nf3 0-0 12.c4 Rb8 13.Rb1 Rb6=+.

6.Nbd2 a5 7.b5 Be7 8.e3 (8.e4 de4 (8...0-0 9.e5 Ne8 10.Be2 c6 11.bc6 bc6 12.Rb1 Rb8 13.0-0 Qc7=) 9.de4 0-0 10.h3 Bh5 11.Qe2 Bc5 12.Rd1 Qe7 13.e5 Nd5=+; 8.h3 Bf3 (8...Bh5 9.g4 Bg6 10.h4 Ng4 11.Bg7 Rg8 12.Bb2 Bh5 13.c4 Bf6=) 9.Nf3 0-0 10.e3 Rc8 11.Be2 c6 12.bc6 Rc6 13.Nd4 Rc5=; 8.Ne5 Ne5 (8...Bh5 9.c4 0-0 10.cd5 Ne5 11.Be5 Nd5 12.Qa4 f6 13.Bb2 e5=+) 9.Be5 0-0 10.f3 Bh5 11.d4 Nd7 12.Bg3 Bf6 13.c3 e5=+) 8...0-0 (8...Bd6 9.Be2 0-0 10.h3 Bh5 11.0-0 c6 12.bc6 bc6 13.c4 e5=; 8...c6 9.bc6 bc6 10.h3 Bf3 11.Qf3 Rb8 12.Rb1 Bd6 13.d4 Qe7=+; 8...c5 9.Be2 Qb6 10.c4 dc4 11.dc4 0-0 12.0-0 Rfd8 13.Qc2 e5=; 8...a4 9.Be2 0-0 10.0-0 c6 11.bc6 bc6 12.Rb1 Bc5 13.h3 Bf3=) 9.h3 (9.Be2 c6 10.bc6 bc6 11.Rb1 Bd6 12.0-0 Qe7 13.a4 e5=+) 9...Bf3 (9...Bh5 10.Be2 c6 11.bc6 bc6 12.Rb1 Rb8 13.c4 Bd6=) 10.Nf3 (10.Qf3 c5 11.bc6 bc6 12.Rb1 Rb8 13.c4 Rb7=+) 10…c6 (10...Rc8 11.Be2 c6 12.bc6 Rc6 13.Nd4 Rc5=) ½–½. Luther,Thomas (2575) – Maiwald,Jens_Uwe (2540), Capablanca Mem Elite (8), 2004. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.a3 Ngf6)

6.Nbd2 a5 7.b5 Be7 8.e3 0-0 9.h3 Bf3 10.Nf3 c6 11.bc6 bc6 12.Be2 Rb8 13.Bc3 a4 14.0-0 Bd6 15.Qd2 (15.Ra2 e5=+) 15...Qe7 16.Rfb1 e5 17.Bb4 c5 18.Ba5 e4 19.de4 de4 20.Nh2 c4 (20...Be5 21.Rb8 Rb8 22.Rd1=+) 21.Bc4 Rfc8 (21...Rb1 22.Rb1 Ba3 23.Rb7=) 22.Be2= Rb1 23.Rb1 Ba3 24.Ng4 (24.Bb5 Ne5 25.Ba4 Nc4=) 24...Qd6=+ 25.Nf6 Nf6 (< 25...gf6 26.Qd6 Bd6 27.Rd1+/–) 26.Bb5 Qd2 27.Bd2 Rc2 28.Be1 h6 29.Ba4 Rc4 ½–½. jaskier (2165) – pierre (2125), internet, 2007.

6.Nbd2 c5 7.Rb1 cb4 8.ab4 Bf3 9.gf3 (9.ef3 Bb4 10.Bf6 Bd2 11.Qd2 Qf6 12.Rb7 Qa1 13.Qd1 Qa6–/+) 9...Bb4 10.Bf6 Bd2 11.Qd2 Qf6 12.Rb7 0-0 13.Rd7 Rfb8 (13...Qa1 14.Qd1 Qc3 15.Qd2 Qc6–+) 14.Qc1?? (better is 14.Qa5 Rb1 15.Kd2=) 14...Qc3–+ 15.Kd1 a5 (15...Qc6!? 16.Re7 Qd6 17.Rf7 Kf7–+) 16.Rg1 (16.Bh3 Qc6 17.Be6 Qe6–/+ (< 17...fe6 18.Rg7 Kh8 19.Qh6 Qc2 20.Kc2 Rb2 21.Kb2 Rb8 22.Ka1 Rb1 23.Rb1 e5 24.Qh7)) 16...a4 (better is 16...g6–/+) 17.Bh3–+ a3 18.Be6 a2 (18...fe6?! A) 19.Rdg7 Kh8 20.R1g6 Qg7 21.Rg7 a2–+ (21...Kg7?! 22.Qg5 Kf7 23.Qf4 Kg7 24.Qh4=); B) 19.Rgg7 Qg7 20.Rg7 Kg7 21.Qg5 Kf7 22.Qf4 Ke7 23.Qc7 Kf6 24.Qc3 (24.Qh7?? a2 25.Qh4 Kf7–+) 24...Kg6 25.Qe5 Rb1 26.Kd2=) 19.Rf7 Kh8 20.e4 (20.Rgg7 Qg7 21.Rg7 Rb1–+) 20...a1Q 21.Ke2 Qc1 22.Rc1 d4 23.Bd5 Qb2 24.Kd2 Ra6 25.Rc7 (25.h4 Rg6 26.f4 Rg2–+) 25...h5 (better is 25...Qb6 26.Rc6 Qb4 27.Ke2 Rc6 28.Bc6 Qa3–+) 26.Rc4 (26.f4–+) 26...Ra1 27.Ra1 Qa1 28.Rd4 (28.Be6 Rb1 29.Rc8 Kh7 30.Bf5 Kh6 31.f4 Qa5 32.Ke2 Qe1 33.Kf3 Qh1 34.Kg3 Rg1 35.Kh3 Qg2 36.Kh4 Qh2 37.Bh3 Qf2) 28…Qd4 (29.Bb3 Qf2 30.Kc3 Qh2–+) 0–1. jaskier (2115) – pierre (2065), internet, 2006.

6.Be2 Bd6 7.Nc3 a6=+.

6.Be2 Bd6 7.c4 dc4 8.Bc4 (8.h3 Bf3 9.gf3 b5–/+) 8...e4 9.h3 Bh5 10.g4 Bg6 (< 10...ef3 11.gh5 a5 12.Qf3 ab4 13.ab4+=) 11.Nh4 Ne5 12.Be2 (12.Be5 Be5 13.Ra2 Qd6=+) 12...c6 (12...a5 13.g5 Nd5 14.Qa4 Qd7 15.Qd7 Kd7 16.b5=+) 13.Ng6 (13.Nc3 Nd3 14.Bd3 ed3=) 13...hg6=+ (< 13...Ng6 14.Bf6 Qf6 15.Nc3+=) 14.Nc3 Nd3 (14...Rh4 15.b5 Nd3 16.Bd3 ed3 17.Qf3=) 15.Bd3= ed3 16.f4 (16.g5 Nd7 17.f4 Qe7=) 16...g5=+ 17.fg5 (17.Qf3 gf4 18.ef4 a5=) 17...Nh7 18.Ne4 Ng5 19.Ng5 Qg5 (19...Bg3 20.Kf1 Qg5 21.Qf3=+) 20.Qf3 Qh4 (20...f6 21.Qe4 Be5 22.0-0-0=) 21.Kd1= 0-0 22.Rf1 a5 (better is 22...f6=) 23.Qe4 (23.ba5 Ra5 24.e4 Rb5=) 23...ab4 (better is 23...Qh3!? 24.Qd3 ab4–/+) 24.Qd4= Qh6 25.ab4 Rad8 26.Bc3 (better is 26.Rf3!?=) 26...Bc7 27.Qe4 Qh3 28.Rh1 (better is 28.Rf2!?–/+) 28...Rde8–+ 29.Rh3 Re4 30.Kc1 Rg4 31.Kb2 b6 32.Rah1 f6 33.Rh8 Kf7 34.Rf8 Kf8 35.Ra1 Ke7 36.Ra7 Kd8 37.Ra8 Kd7 38.Rg8 c5 39.bc5 bc5 40.Kb3 Ke6 41.Rc8 Bd6 42.Ba5 Kd7 43.Rd8 Kc6 44.Bc3 f5 45.Rg8 g6 46.Bf6 c4 47.Kc3 Kb5 48.Rd8 Bb4 49.Kb2 Bd2 50.Bd4 Rg2 51.Rd5 Kb4 52.Bc5 Ka4 53.Kb1 Kb3 (54.e4 Re2 55.Rd3 cd3 56.Bf2 Rf2 57.ef5 Rf1#; 53...Bc3 54.Rd3 cd3 55.e4 Rb2 56.Ka1 Re2 57.Kb1 Re1 58.Ka2 Ra1#) 0–1. juanpacio (1695) – pierre (2095), internet, 2006.

6.Be2 Bd6 7.d3 0-0 8.c4 =+.

6.Be2 Bd6 7.d3 0-0 8.Nbd2 a5 9.ba5 Ra5 10.e4 (10.0-0 Qe7=+) 10...Nb6 (10...c6 11.0-0–/+) 11.c4 (11.Nb3!? Ra7 12.ed5=+) 11...de4–/+ 12.de4 Na4 13.Qc2 (13.Bc1 Nc3 14.Qb3 Ne2 15.Ke2 b6–/+) 13...Nb2 14.Qb2 b6 15.0-0 (15.Nb3 Ra4–/+) 15...Qe7 16.a4 Rfa8 17.Bd1 Nd7 18.h3 (18.Qc3 Nc5–+) 18...Be6 19.Nb1 (19.Qc3 Nc5–+) 19...Nc5 (19...Bc4 20.Be2 Be2 21.Qe2–+) 20.Nc3 Bc4 (21.Be2 Be2 22.Qe2 Na4 23.Na4 Ra4 24.Ra4 Ra4–+) 0–1. Maradona (1710) – pierre (2065), internet, 2006.

6.Be2 Bd6 7.d3 Bf3 8.gf3 (8.Bf3 0-0=+) 8...a5 (8...c5 9.bc5 Bc5 10.Qd2=+) 9.c3 (9.b5 0-0=+) 9...c6 10.Nd2 0-0 11.0-0 Ne8 12.Re1 (12.Nb3 b6–/+) 12...f5 (12...Qg5 13.Kh1–/+) 13.Bf1 (13.f4 ef4 14.ef4 Nc7–/+) 13...Qh4 (13...Qg5 14.Bg2–/+) 14.Bg2 (14.f4 ef4 15.Nf3 Qg4 16.Kh1 fe3 17.Re3 Nc7–/+) 14...Nc7 (14...ab4 15.ab4 Ra1 16.Ba1–/+) 15.Qb3 a4 16.Qc2 Rf6 17.Kf1?? e4 18.c4 ed3?? 19.Qd3?? Be5–+ 20.Bd4 f4 21.h3 fe3 22.fe3–/+ Qg3 23.Qe2 Bd4–+ 24.ed4 Ne6 25.cd5 Nf4 26.Qf2 Qf2 27.Kf2–/+ Nd3 28.Kg1 Ne1 29.Re1 cd5 30.f4 Nb6 31.Re7 Rb8 32.Nf3 Kf8 33.Re5 Re8 34.Ng5 Re5 35.de5 Rc6 36.f5 h6 37.Ne6 Re6! 38.fe6 Ke7 39.Kf2 Ke6 40.Ke3 Ke5 (41.b5 Nc4 42.Kd3 Na3–+) 0–1. Demeny,Miklos Nicolae (2255) – Negulescu,Adrian (2450), ROM–chT Romania, 1994.

6.Be2 Bd6 7.d4 e4 8.Ne5 Be2 9.Qe2 Qe7 10.Nd7 Qd7 11.c4 c6 12.cd5 cd5 13.Nd2 (13.Nc3 a5=+) 13...0-0 14.Rc1 Rfc8 15.0-0 a5 16.b5 a4 17.Nb1 Qe7 18.g3 g6 19.Qd2 Qe6 20.Kg2 Qf5 21.Qe2 h5 (21...Rc1 22.Rc1 Ra5 23.Nc3=+) 22.h3 (22.Nc3 h4=) 22...Nh7 23.f4 (23.g4 hg4 24.Qg4 Qe6=) 23...ef3-/+ 24.Qf3 (24.Qf3 Ng5 Double attack (24...Ng5 Decoy); 24.Rf3 Ng5 Double attack (24...Ng5 Decoy)) 24...Qe6 (24...Qf3 25.Kf3 Ng5 26.Kg2 Ne4-/+) 25.Nc3? Attacks the isolani on d5 (better 25.h4 Rc1 26.Rc1=+) 25...Ng5-+ 26.Qf6?? (26.Qd5 Qh3 27.Kg1 Qg3 28.Qg2 Nh3 29.Kh1-+) 26...Qh3 27.Kf2 Bg3 (better 27...Qh2 28.Ke1 Qb2 29.Qg5 Qc1 30.Kf2 Qc3-+) 28.Ke2 Qg2 29.Kd3 Qb2 (29...Be1 30.Rce1 Qb2 31.Rc1-+) 30.Qg5 Rc3! 31.Rc3 Qb5 32.Kd2 Qf1 33.Qg3 Re8 34.Rd3 (34.Rc1 Qf5-+) 34...b5 (better 34...Rc8 35.Rc3 Rc3 36.Kc3 Qc4 37.Kd2 Qa2 38.Ke1 Qa3 39.Qb8 Kh7-+) 35.Qg5 (35.Rc3 Qf5-+) 35...Qf3 (35...Qf2 36.Kd1 Rc8 37.Qf4 Qg1 38.Ke2 Rc2 39.Rd2 Qg2 40.Qf2 Rd2 41.Kd2 Qf2 42.Kc3 Qe3 43.Kb4 Qd4 44.Ka5-+) 36.Qh4 (36.Qg1 h4 37.Rc3 Kg7-+) 36...Kg7 (better 36...Qg2 37.Kd1 Rc8 38.Rd2 Qf1 39.Qe1 Rc1 40.Kc1 Qe1 41.Kc2 Qe3 42.Rd3-+) 37.Qg5 (37.Qh2 Rc8 38.Qg1 h4-+) 37...Re6 (37...Qf2 38.Kd1 Rc8 39.Qe5 Kh7 40.Qf4 Qg1 41.Ke2 Rc2 42.Rd2 Qg2 43.Qf2 Rd2 44.Kd2 Qf2 45.Kc3 Qe3 46.Kb4 Qd4 47.Ka5-+) 38.Kc3 (38.Qg1 h4 39.Rc3 Re4-+) 38...Qe4 (better 38...Qe2 39.Qd5 Re3 40.Re3 Qe3 41.Kb4 Qb3 42.Qb3 ab3 43.Kb3-+) 39.Qd8 (39.Qg1-+) 39...Rc6 (39...b4 40.Kd2 Qg2 41.Kd1 Qf1 42.Kc2 Rc6 43.Rc3 Rc3 44.Kd2 Rd3 45.Kc2 Qe2 46.Kc1 Rd1) 40.Kd2 (40.Kb4 Qd3 41.Qd5 Rc4 42.Ka5 Qe3 43.Qe5 Qe5 44.de5 Re4 45.Kb5 h4 46.Kc5 Re5 47.Kd4 f6 48.Kc3 h3 49.Kd4 h2 50.Kd3 h1Q 51.Kc2 Qf3 52.Kc1 Re2 53.Kd1 Qf1) 40...h4 (40...Qg2 41.Ke1 Rc2 42.Qh8 Kh8 43.Rd2 Qd2 44.Kf1 Qf2) 41.Qg5 (41.Rc3 Qg2 42.Kd3 Rc3 43.Kc3 h3-+) 41…h3 0-1. diotarolo (2105) - Eggplant (2235), Rated Blitz game, lichess.org, 2014.

7.Qf3 a5 8.b5= Bd6 9.g4 (9.Nc3 e4 10.Qe2 0-0=+) 9...h6 (9...e4 10.Qg2 Ne5 11.Be2=+) 10.h4 (10.Qg2 e4=+) 10...c6 (10...e4 11.Qg2=+) 11.Qg2 Ne4 (11...Qb6 12.g5 hg5 13.hg5 Rh1 14.Qh1=) 12.c4 Qc7 (12...Ndc5!?=+) 13.d3+= Nec5 14.cd5 (14.bc6 Qc6 15.Nd2 Nb6+=) 14...cd5 15.Qd5 Na4 16.Qb3 Ndc5 17.Qc2 Nb2 18.Qb2 Na4 (18...Rc8 19.Nd2=) 19.Qb3 Qc1 20.Ke2 Rc8 21.Bg2 Rc2 22.Kf3+= Qb2 23.Qb2 Rb2 24.Rc1 0-0 25.Nc3+= Nc3 26.Rc3+/– Rb5 27.Ra2 Rb1 28.a4 b5 29.Rc6 Rd8= 30.ab5 Rb5 31.Bf1 Be7 32.h5 Rb1 33.Ra5?? Rf1–+ 34.Re5 Bh4 35.Rc2 Rd3 36.Re8 Kh7 37.Rcc8 g6 38.Rh8 Kg7 39.Rcg8 Kf6 40.hg6 Rf2 41.Ke4 Rd7 42.Rh6 Re7 43.Kd5 ½–½. Benassi,Aspasio – Quirini,Luciano, CEM5EA, 2001.

8.Bb5 c6 9.Ba4 (9.Bf1 0-0–/+) 9...0-0 10.d3 (10.Nc3 a5–/+) 10...Re8 (10...e4!? 11.Qe2 a5 12.0-0 ab4 13.ab4 Bb4 14.d4–+) 11.Nd2 Qe7 12.Qe2 (12.0-0 a5–/+) 12...a5–/+ 13.c3 b5 (13...e4 14.de4 de4 15.Bb3+=) 14.Bc2 c5 (14...ab4 15.cb4 Nb6 16.0-0+=) 15.bc5 Nc5 16.0-0 Rab8 17.Nf3 (17.Rfb1 Rec8+=) 17...h5 (17...Na4 18.Ba4 ba4 19.c4+=) 18.d4= Ncd7 (18...ed4 19.Nd4 Qe5 20.Nf3=) 19.Nh4 (19.a4!? b4 20.cb4 Rb4 21.de5 Ne5 22.Rab1=) 19...g6+= 20.g3 (20.Bd3 Rec8+=) 20...e4–/+ 21.f4? (21.a4 Qe6 22.Kh2 (22.ab5? Qh3 23.Bc1 g5–+) 22...ba4 23.Ba3–/+) 21...ef3!–+ 22.Rf3 Ne4 23.Qg2 Ng5 24.Rf2 Nf6 25.Bb3?? Nfe4 26.Bd5 Nf2 27.Rf1 Ngh3 28.Kh2 Qh4 29.Bf7 Kf7 30.Qf3 Kg7 31.Kg2 Qg3! 32.Qg3 Bg3 33.Kg3 Re3 34.Kg2 Rf8 (34...Rf8 35.d5 Re2 36.Re1 Re1 37.c4 Kh6 38.Bg7 Kg7 39.Kh2 Rg1 40.cb5 Rf3 41.b6 Ng4#) 0–1. Dolejs,Dan – Guthrie,David (2140), South Island–ch NZL, 1999.

8.Nc3 e4 9.Qd1 =+.

8.c4 c6 9.cd5= e4 10.Qd1 cd5 11.Nc3 0-0 12.Be2 Be5 13.d4 ed3 14.Qd3 Nb6 15.Rc1 Rc8 16.0-0 Qd7 17.Ba1 Qe6 18.a4 Rfd8 19.Rfd1 Qe7 (19...Qe8 20.Qb5 Qb5 21.Bb5+=) 20.a5+= Nc4 21.Bf3 Increasing the pressure on the isolated pawn on d5 21...Qb4 22.Nd5 Nd5 23.Bd5 Ba1 24.Ra1 b5 (24...Na5? 25.Qf5 b6 26.Qf7 Kh8 27.Qa7+-) 25.ab6 Nb6 26.Qa6 Rd7 27.Bc6 Rdc7 28.Bf3 Qe7 29.Bg4 Rd8 30.Rdc1 Rc1 31.Rc1 g6 32.Qa5 Rd5 33.Qa1 Rd3 34.Rc6 Ra3 35.Qb2 Ra5 36.Qd2 Rd5 37.Qc2 Qe5 38.Bf3 Rb5 39.Be2 Ra5 40.g3 Nd7 41.Kg2 Kg7 42.Bf3 Qa1 43.Qe4 Ra2 ½–½. bollewillem (2265) – marekt (2110), gameknot.com, 2014.

8.c4 e4 9.Qd1 +=.

8.d3 0-0 9.Nc3 c6 =+.

8.d3 c5 9.bc5 Qa5 10.Bc3 Qc5 11.d4 ed4 12.ed4 =.

8.d3 e4 9.Qd1 (9.de4 de4 10.Qe2 Qe7+=) 9...a5 10.b5 0-0 11.Be2 Qe7 12.Nd2 c6 (12...Rad8 13.0-0+=) 13.0-0 (13.de4 Ne4 14.0-0 Rad8=) 13...Bc7 (13...Rfd8 14.de4 de4 15.Qb1=) 14.bc6= bc6 15.Nc4?? (better is 15.de4 de4 16.Nc4=) 15…dc4–+ 0–1. Torre,Isidro (2170) – Perz,Martial (2105), IECC, 2001. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.a3 Ngf6 5.e3 e5 6.h3 Bf3)

6.Nc3 a5=+.

6.c4 c6 7.Nc3 Be7 (7...dc4 8.Bc4 Ne5 9.d3=+) 8.Be2 (8.cd5 ed5 9.Be2 0-0=) 8...0-0 (8...dc4 9.Bc4 Ne5 10.Bf1–/+) 9.0-0 (9.cd5 cd5 10.0-0 a5=) 9...a5 (9...dc4 10.Bc4 Bf3 11.gf3=+) 10.b5 (10.c5 ab4 11.ab4 Ra1 12.Qa1 e5=) 10...dc4=+ 11.bc6 bc6 12.Nd4 (12.Qc2 Bf3 13.Bf3 Ne5–/+) 12...Be2 13.Qe2 (13.Nce2 Bd6=+) 13...Qb6 (13...Ne5 14.f4 Nd3 15.Nc6–/+) 14.Na4=+ Qa6 15.Rfc1 Nd5 (15...Rab8 16.Qc4 Qc4 17.Rc4=) 16.Qc4 Qc4 (16...c5 17.Nf5 ef5 18.Qd5=) 17.Rc4 c5 18.Nf3 (18.Nc6 Bd6 19.e4 Rfc8 20.ed5 ed5+=) 18...Rab8 19.Kf1 (19.e4 N7b6 20.Nb6 Nb6=) 19...Rb5 20.e4 N5b6 21.Nb6 Nb6 22.Rc2 Na4 (22...Rb8 23.Be5 Rb7 24.d3=) 23.Be5 f6 24.Bc3 (24.Bg3 e5=) 24...Rfb8 25.Ke2 e5 (25...Bd6 26.Rac1=+) 26.d3= c4 (26...Nc3!? 27.Rc3 Kf7=) 27.dc4+= Nc3 28.Kd3?? (better is 28.Rc3 Rb3 29.Rb3 Rb3 30.a4+=) 28...Rb1–+ 29.Rb1 Nb1 30.c5 Na3 (30...Rb3 31.Ke2 Nc3 32.Kd3 Na4 33.Kc4 Nc5 34.Ra2–+) 31.c6 (31.Rc3 Nb5 32.Rc1–+) 31…Nc2 (32.Kc2 a4–+) 0–1. Waechtler,Frank (2290) – Stillger,Bernhard (2195), NRW–Liga I, 1994.

6.c4 c6 7.h3 Bh5 8.Be2 Bf3 9.gf3 g6 10.h4 Bg7 11.Nc3 h5 12.Qc2 a5 13.b5 Rc8 14.bc6 bc6 15.Na4 c5 16.Rb1 0-0 17.Bd3 dc4 18.Bc4 Nd5 19.Bg7 Kg7 20.f4 Ne7 21.Rb5 Nf5 22.Qc3 Kh7 23.Bd3 Nd6+= 24.Rb1 Qc7 25.Rg1 Qc6 26.Qc2 Rg8 27.Nc3 Nf6 28.Be2 Nf5 29.f3 Nd4 30.Qd1 Nf5 31.Qc2 Nd4 32.Qd1 Nf5 ½–½. Ivanets,Vladimir (2290) – Spassov,Liuben (2395), Wch–Seniors, Lignano Sabbiadoro ITA, 2005.

6.d4 a5 7.b5 c5 (7...Bd6 8.Nc3=+) 8.Nbd2 (8.bc6 bc6 9.Nbd2 Rb8=+) 8...cd4 9.ed4 Nb6 (9...Bd6 10.Bd3=+) 10.h3 Bh5 (10...Bf3 11.Qf3 Rc8 12.Bd3=+) 11.c3 (11.c4 dc4 12.Nc4 Nfd5=+) 11...Rc8 (11...Bd6 12.Bd3=+) 12.Bd3 Bd6 (12...Bg6 13.Bg6 hg6 14.0-0=+) 13.a4 Bf4 14.Nb3 (14.Qb3!?=+) 14...Nc4–/+ 15.Bc4 Rc4 (15...dc4 16.Nbd2–/+) 16.Nc5 (16.g3 Bd6 17.Nbd2 Rc7–/+) 16...Ne4 (better 16...Qc7–/+) 17.g4? (17.Ne4!? de4 18.g4–/+; better 17.Ne4!? de4 18.g4–/+) 17...Nc5–+ 18.dc5 Bg6 19.Nd4 (19.Bc1 Qf6 20.Nd4 Rc3 21.Bf4 Qf4–+) 19...Rc5 20.0-0 Rc4 21.Qf3 Bd6 22.Rfe1 (22.Qe3 Qe7–+) 22...0-0 23.Qg2 (23.Ba3 Ba3 24.Ra3 Qd6–+) 23...Qb6 (23...Qd7 24.Rf1–+) 24.Kh1 (24.h4 h5 25.gh5 Bh5–+) 24...Rfc8 25.Re2 (25.Kg1 Bf4 26.Ra3 h5–+) 25...h6 (better 25...Bf4–+) 26.Nc2 (26.g5 h5–+; 26.Rd2 Bf4 27.Rdd1 Be5–+) 26...Be4 Black intends d4. Black prepares the advance d4 (better 26...Ra4! 27.Ra4 Qb5 28.f4 Qa4 29.f5 ef5 30.gf5 Bf5 31.Qd5–+; better 26...Ra4! 27.Ra4 Qb5 28.Ba3–+) 27.f3 Bc2 28.Rc2 Be5 Black prepares d4. Black prepares d4 (28...d4 29.Qf2 Qc5 30.Ba3–+) 29.Qd2 (29.Qe2 Bf6–+) 29...d4 30.Ra3 (30.Qe2 dc3 31.Bc1 Bd4–+; 30.Qf2 Qc7–+) 30…dc3 (30...dc3 31.Rac3 Bc3 32.Rc3 Qc7 33.Rc4 Qc4–+; 30...dc3 31.Rac3 Bc3 32.Rc3 Qc7 33.Rc4 Qc4–+) 0–1. Heinzel,P (2055) – Hausrath,D (2485), Oberhausen GER, Easter Open, 2013.

6.Be2 Bf3 7.Bf3 b5 8.Qe2 Rb8 9.e4 de4 10.Be4 c5 11.Bc6 Qb6 12.Bd7 Nd7 13.0-0 cb4 14.ab4 Bb4 15.Bg7 Rg8 16.Bh6 Qb7 (16...Qc6 17.g3 Qc2 18.Ra7=+) 17.g3= a6 18.c3 Be7 19.Na3 Rg6 20.Bf4 Rd8 21.Nc2 Kf8 22.Nb4 Bb4 23.cb4 Kg8 24.h4 e5 25.h5 Rd6 (25...Re6 26.Bg5 Rc8 27.Rfc1=) 26.Be5+= Ne5 27.Qe5 Qd5 28.Qd5 Rd5 ½-½. pvanr (2260) - bumblingbishop (2210), gameknot.com, 2021.

6.Be2 Bf3 7.Bf3 b5 8.Qe2 Rb8 9.e4 de4 10.Be4 c5 11.Bc6 Qb6 12.Bd7 Nd7 13.Nc3 Be7 14.0-0 Nf6 15.Qe5 Rc8 16.Qg3 a6 (16...cb4 17.ab4 0-0 18.Ne4=) 17.Qg7 Rg8 18.Qh6 cb4 19.ab4 Rg6 20.Qf4 Qb7 21.g3 Rc4 22.Qe5 Rh6 (22...Bb4 23.Ra2=) 23.f3 Qb6 24.Kg2 Rh5 25.Qe2 Qc6 26.Nd1 (26.Ra2 Bb4 (worse 26...Rb4 27.Rfa1+/-) 27.Rfa1 a5= (27...Bc3 28.Bc3 Nd5 29.Ra6 Nc3 30.dc3+-)) 26...Nd5 (26...Rc2 27.Bc3 Rd5 28.Rf2=) 27.Ne3 (better 27.c3!?+=) 27...Rb4 28.Ba3 Rbh4 29.Rh1 Re5 30.Be7 Ne3 31.de3 Rc4 32.Ra2 Ke7 33.Rd1 Rec5 34.Rd2 b4 35.e4 e5 36.Qd1 a5 37.Qe2 a4 38.Kf1 a3 39.Qf2 (39.Qd1 Rc3 40.Kg2 Kf8-/+) 39...Rc3 40.Kg1 Qf6 41.Kg2 Qe6 42.g4 Kf8 43.Qh4 h6 44.g5 Kg7 45.Kh1 (45.gh6 Qh6 46.Qg4 Qg6 47.Qg6 Kg6-+ (worse 47...fg6 48.h4-+)) 45...Kh7 46.Rg2 (46.Kg2-+) 46...Rf3 (46...Qa2 47.Qh6 Kg8 48.g6 Qa1 49.Rg1 Qg1 50.Kg1 fg6 51.Qg6 Kf8 52.Qd6 Ke8 53.Qb8 Ke7 54.Qb4-/+) 47.Ra1 Rf4 48.Qh5 (48.Qe1 Rc4 49.gh6 Rg4-+) 48...Qg6 (48...Re4?! 49.Rf1 Rc8 50.Rf7 Kh8 51.Rf1-+) 49.Qg6 (49.Qh3 Qe4 50.Qh6 Kg8-+) 49...fg6 50.Re2 hg5 51.Kg2 Rc4 52.h3 (52.Rae1 g4-+) 52…Kh6 0-1. pvanr (2240) - bumblingbishop (2160), gameknot.com, 2021.

6.ef3 e5 7.d4 Bd6 8.c4 ed4 9.c5 (< 9.Qd4 Be5 10.Qd2 Bb2 11.Qb2 Qe7 12.Be2 dc4–/+) 9...Qe7 10.Be2 Be5 11.f4 (11.Qd3 0-0=+) 11...Bf4–/+ 12.0-0 0-0 13.Re1 c6 14.Nd2 Rae8 15.Bd4 Qd8 16.Nf3 Ne4 17.Bd3 f5 18.Qc2 Kh8 19.Qb2 Qe7 20.Re2 b6 21.cb6 (21.Qc2 bc5 22.bc5 Ndc5 23.Be4 Ne4 24.Qc6 Qf7=+) 21...ab6–/+ 22.Rae1 c5 23.Bc3 c4 (23...Qf7 24.g3 Bh6 25.Bb5–/+) 24.Bc2 Rf7 25.a4 Qd6 26.Bd4 Qg6 27.a5 Rfe7 28.a6 Ne5 29.Be5 Be5 30.Ne5 Re5 31.a7 Qc6 32.a8Q Qa8=+ 33.Qd4 Qc6 34.f3 Qf6 35.b5 Rf8 36.fe4 fe4 37.Rd1 Qe6 38.Ree1 Ref5 39.Be4 Re5?? 40.Rf1+– Rf1 41.Rf1 Kg8 42.Bf3 Rf5?! 43.Bg4 Rf1 44.Kf1 Qd6 45.Bf3 Qf8 46.Qd5 Qf7 47.Qd8 Qf8 48.Qb6 Qb4 49.Bd5 Kh8 50.Qd8 Qf8 51.Qf8 1–0. Pierred (2305) – GreatestProg, Rated game, 3m + 0s, 2005.

7.Nc3 c5 =+.

7.Qe2 c6 8.g3 Bd6 9.Bg2 a5 10.b5 0-0 11.Nc3 Nb6 12.d3 Nbd7 13.Rb1 Qb6 14.bc6 bc6 15.Na4 Qb5 16.Nc3 Qb8 17.0-0 Ra7 18.Qe3 Rb7 19.Qc1 Qc7 20.f4 Rfb8 21.Ba1 Nb6 22.Ne2 Qe7 23.Nd4 Rc8 24.Qd2 a4 25.Qa5 Qc7 26.Qc3 Be7 27.Rfe1 c5 28.Nb5 Qc6 29.f5 ef5 30.Qe5 Re8 31.Qf5 g6 32.Qf3 Nbd7 33.c4 dc4?? (Better is 33...Qa6+-) 34.Qc6 1–0. COMP – NN, 2003.

7.Qe2 Bd6 8.Qb5 Qb8 9.Be2 c6 10.Qd3 0-0 11.Nc3 Qc7 12.0-0 a6 13.Rfe1 c5 14.Na2 c4 15.Qc3 Nb6 16.Qe3 Bh2 17.Kf1 Bf4 18.Qc5 Qb8 19.Bf6 Nd7 20.Qd4 Nf6 21.Rad1 a5 22.Qc3 ab4 23.Nb4 Rc8 24.Na2 Qd6 25.Qb4 Ra3 26.Qd6 Bd6 27.Nc3 Bb4 28.Ra1 Rc3 29.dc3 Bc3 30.Ra7 Be1 31.Ke1 Rb8 32.c3 b5 33.Kd2 Kf8 34.Kc2 e5 35.f4 ef4 36.h4 h6 37.h5 Rb6 38.Bd1 g6 39.Bf3 gh5 40.Bd1 0–1. NN – Fritz 8, Blitz:1', 2004.

7.Be2 c5 8.Bc3 =+.

7.Be2 c6 8.0-0 a5 9.b5 Bd6 10.Re1 0-0 11.Nc3 Nh5 12.g3 Ng3 13.fg3= Bg3 14.Rf1 Qh4 15.Kg2 Ne5 16.Rh1 Ng6 17.Qg1 Rab8 18.Kf1+= c5 19.Qc5+/– Nf4 20.Qd4 f6 21.Qb6 Kh8 22.Rb1 e5+= 23.a4 f5 24.Ba3 Rfe8 25.Bd6 Rbd8 26.Bc7 Rd7 27.Qa5 Bf2 28.Rh2 Bd4 29.Nd1 Qg3 30.Rf2 b6 31.Bb6 Rd6 32.Rb2?? Rg6 33.Ke1 Ng2 34.Kf1 Qh2 35.Bd3 Qh1 36.Ke2 Nf4 0–1. Pierred (2145) – Merepawn (2585), Rated game, 2m + 0s, 2005.

6.Nc3 Bf3 7.ef3 e6 =.

6.d3 e6 7.e4 de4 8.de4 Ne4 9.Bd3 Nef6 10.0-0 a5 11.ba5 Bd6 12.Nbd2 0-0 13.Nc4 Nc5 14.Rb1 Bf4 15.g4 Nd3 16.gh5? Nb2=+ 17.Qd8 Rad8?? 18.Rb2= Rd5 19.Rb7 Rc5 20.Rb4 Nd5 21.Ra4 Ra8 22.Re1 h6 23.Kg2 Bd6 24.h4 Nc3 25.Rb4 Kf8 26.Nd4 Be7 27.Re3–+ Nd5 28.Rf3 Bf6 29.Nb3 Nb4 30.Nc5 Nc2 31.Rb3 Ke8 32.Rb7 Kd8 33.Nb6 cb6–+ 34.ab6 Ke8 35.Ra7 Rd8 36.b7 Nd4 37.a4 Nc6 38.Ra8 Bd4 39.Na6 Kd7 40.a5 Ba7 41.Kf3? Bb8–+ 42.Nb8 Nb8 43.a6 Kc7 44.a7 Kb7 45.ab8Q Rb8 46.Ra1 Kc6 47.Rg1 Rb3 48.Ke2 Kd7 49.Rg7=+ Ke7 50.Rg4 Rb5 51.Kf3 Rh5 52.Rb4 Rd5 53.Rb8 Rc5 54.Rh8 Kf6 55.Kg4 Kg7 56.Re8 h5 57.Kf4 Rf5 58.Kg3 Ra5 59.Kf4 Rb5 60.f3 Rf5 61.Ke4 Ra5 62.Kf4 Rc5 63.Re7 Kf6 64.Re8 e5 65.Kg3 Rc1 66.Rh8 Kg6 67.Rg8 Kh7 68.Re8 f6 69.f4 Rc3–+ 70.Kf2 ef4 71.Re4 f3 72.Rd4 f5 73.Rb4 Rd3 74.Rb1 Rd4 75.Rh1 Kg6 76.Kf3 Kf6 77.Kg3 Rg4 78.Kf3 Ke5 79.Re1 Re4 80.Rh1 Rf4 81.Kg2 Rd4 82.Kh3 Rd3 83.Kh2 f4 84.Rg1 Rd5 85.Rg8 Ke4 86.Kg2 Rd2 87.Kh3 Ke3 88.Rf8 Rd6 89.Rf5 f3 90.Re5? Kf4–+ 91.Rb5 Re6 92.Rb1 Re4 93.Rc1 Rd4 94.Ra1 Ke3 95.Kg3 Rg4 96.Kh3 Ke4 97.Ra4 Kf5 98.Ra5 Kf6 99.Ra2 Ke5 100.Ra5 ½–½. Winiger,Albert (2150) – Baumann,Heinz (2245), RSX5D – X–Mas, 2005.

6.e3 e6 7.Be2 (7.Bb5 a5 (7...Bd6 8.g4 Bg6 9.g5 Nh5 10.Rg1 a5 11.ba5; 7...c6 8.Be2 a5 9.b5 Bf3 10.gf3 Bd6 11.f4) 8.g4 Bg6 9.g5 Nh5 10.ba5 Ra5 11.Bd7; 7.g4 Bg6 8.Nc3 h6 9.Bg2 a5 10.b5 Bd6 11.d3; 7.d3 Bd6 (7...c5 8.g4 Bg6 9.bc5 Bc5 10.h4 h6 11.Bg2) 8.c4 c5 9.g4 Bg6 10.g5 Nh5 11.cd5) 7...c5 (7...Bd6 8.0-0 (8.Nc3 0-0 9.Nb5 Be7 10.Nbd4 a5 11.b5) 8...0-0 9.Nc3 a5 10.b5 e5 11.d3) 8.bc5 (8.b5 Bd6 9.g4 Bg6 10.g5 Nh5 11.Rg1; 8.g4 Bg6 9.g5 Ne4 10.h4 h6 11.Bb5) 8...Nc5 (8...Bc5 9.Nc3 0-0 10.g4 Bg6 11.d3) 9.0-0 (9.Bb5 Nfd7 10.0-0 Rc8 11.Be2) 9...a6 (9...Bd6 10.Nc3 0-0 11.Rb1) 10.Bf6 (10.Ne5 Be2 11.Qe2) 10...Qf6 11.d4 Ne4 12.Nfd2 Bg6 13.Ne4 Be4 14.Nd2 Qd8 (better is 14...Bf5!?=) 15.Ne4+/– de4 16.c4 Qd7 17.f3 ef3 18.Bf3 Be7 19.Rb1 Ra7 20.c5 0-0 21.Qb3 Qc7 (21...Bg5 22.Rfe1 Rfa8 23.Bb7+-) 22.Bb7 (22.Qb6 Qb8 23.Bb7 Bd8+-) 22...Rb8 23.c6 Bg5 24.Qc3 Be7 25.d5! e5 (25...ed5 26.Qd4) 26.e4 Bd6? (26...a5+-) 27.Rfc1 1–0. Rosner,Dirk – Wolf,H, Tigerschachclub, 1999.

7.d3 e6=+ 8.Nbd2 h6 (8...c5 9.bc5 Bc5 10.e3=+) 9.Rg1 (9.c4 c5=) 9...Bd6 (9...c5 10.bc5 Bc5 11.Rb1=+) 10.c4 c6 11.h4 (11.e4 e5=) 11...e5 12.g5 hg5 13.hg5 Ng8 14.cd5 (14.Bg2 Ne7=) 14...cd5 15.Qb3 (15.e4 a5=) 15...Ne7=+ 16.e4 d4 17.Nc4 Bc7 18.a4 (18.Qa4 Qb8 19.b5 Qd8=+) 18...Bh5 (18...Rc8 19.Bg2=+) 19.Nh4 (19.Be2 Bf3 20.Bf3 Rc8=) 19...Bd1 (19...a5 20.f4=+) 20.Rd1 (20.Kd1 Rh4 21.Qc2 Rh2=+) 20...Rh4 21.Ba3 (21.Rg3 Ng6=+) 21...Ng6=+ 22.Be2 Kf8 23.Kd2 Kg8 24.Kc2 Ndf8 25.Kb1 Ne6 26.Bg4 Ng5 27.Bc1 Nf4 28.Bf4 ef4 29.f3 a6 30.Rd2 b5 31.ab5 ab5 32.Na3 Bd6 33.Nb5 Bf8 34.Rc1? Rb8–+ 35.Qc4 Rh6 36.Qc7 Rhb6 37.Qd8 Rd8 38.Nc7 Rb4 39.Rb2 Rb2 40.Kb2=+ Rb8 41.Ka2 Bd6 42.Nd5 g6 43.Rc6 Be5–/+ 44.Nb6 Rb7 45.Nc4=+ Bg7 46.Rc5 Nh7 47.Rc8 Nf8 48.Rd8 Rb5 49.Ra8 Rc5 50.Kb3 Bf6 51.Ra7 Ne6 52.Kb4 Rg5 53.Nd6 Nd8 54.Kc4 Kf8 55.Ra8 Re5 56.Nb7+/– Ke8 57.Nd8 Bd8 58.Kd4 f6 59.Kc4 Ra5 60.Rb8 Ra7 61.d4+/– Ke7 62.d5 Bc7 63.Rg8 Ra1 64.Rg7 Ke8 65.Rg6 Rc1 66.Kd3 Be5 67.Rg8 Ke7 68.Ra8 Rd1 69.Ke2+– Rd4 70.Ra6 Kf7 71.Ra7 Ke8 72.Bf5 Kf8 73.Bd7 Ke7 74.Be6 Ke8 75.Ra2 Rb4 ½–½. Basman,Michael J (2350) – Ledger,Andrew (2460), BCF–ch, 1998.

7.d3 e6=+ 8.e3 a5 9.b5 Bd6 =.

7.d3 e6 8.Bg2 c5 9.bc5 Bc5 10.0-0 0-0 (10...Qb6 11.Qc1–/+) 11.Nbd2=+ Rc8 12.c4 a6 (12...dc4 13.Nc4 Nd5 14.Qd2=+) 13.Qb3 (13.g5 Nh5 14.cd5 ed5–/+) 13...dc4 14.Nc4 Nd5 15.Bc1 (15.Qb7 Bf2 16.Rf2 Nc5=+) 15...b5 16.Nce5 Ne5 17.Ne5 Bd4 (17...Qf6 18.Qb2 Nc3 19.Qc3=+) 18.Ng6 hg6 (18...fg6 19.Bd5 ed5 20.Bb2 Bb2 21.Qb2–/+) 19.Ra2 Bf6 (19...Rc3 20.Qd1 Rc7 21.Rc2–/+) 20.e3 Rc3 21.Qb1 Rc7 22.Bd2 Nc3 23.Bc3 Rc3 24.d4 Qc7 25.a4 (25.Rd1 Rc8–/+) 25...b4 26.Be4 (26.Rd2 Rc8–/+) 26...Rc8 27.Bd3 a5 28.Ba6 Rd8 29.Bb5? Rd4–+ 30.ed4?? Rh3 31.Rd1 Qh2 32.Kf1 Qh1 33.Ke2 Qf3 (34.Ke1 Bh4–+) 0–1. taiger (1710) – pierre (2020), internet, 2006.

7.g5 Ne4 8.d3 Nd6 9.Nbd2 h6 (9...e5 10.c4 dc4 11.dc4=) 10.c4 dc4 11.Nc4 (11.gh6 c3 12.Bc3 Rh6=) 11...Nc4=+ 12.dc4 hg5 13.Ng5 e5 14.h4 Qe7 15.Bg2 0-0-0 (15...c6 16.Qb3=) 16.Qb3 (16.Qd5 c6 17.Qa5 Nb6 18.Qe5 Qe5 19.Be5 Nc4 20.Bh3 f5=) 16...f6=+ 17.Qf3 c6 18.h5 Be8 19.Ne4 Nb6 20.c5 Nc4 21.Bc3 Qf7 22.a4 (22.Bh3 Kb8 23.Bg4 Be7=) 22...Kb8 (22...Be7 23.Ng3=) 23.Rd1 (23.Ng3 Qc7=+) 23...Rd1=+ 24.Kd1 Be7 (< 24...Rh5 25.Rh5 Qh5 26.Qd3+–) 25.Qd3 (25.Qg3 Rh6=+) 25...Bd7 26.Qg3 Bc8 27.f4 Rd8 28.Ke1= Ka8 29.fe5 Ne5 30.Rh4 Qb3 31.Qg7 Rg8 32.Qe7+= Rg2 33.Kf1 Rg8 34.Qf6 Bg4–+ 35.Rg4 Ng4 36.Qf4 Qd1 37.Be1 Qd4 38.Bd2 Nh2! 39.Qh2 Qe4 40.Bh6 Qd4 41.b5 Rg4 42.bc6 bc6 43.a5 Qf6 44.Ke1 Qh6 45.Qe5 Qc1 46.Kf2 Rf4 47.Kg3 Rf8 48.Qe6 Qg5 49.Qg4 Qc5 50.Kh3 Qe3 51.Qg3 Qg3 52.Kg3 c5 53.e4 c4 54.e5 c3 55.e6 c2 56.e7 Re8 57.h6 Re7 58.h7 Rh7 59.Kf3 c1Q 60.Ke4 Qc4 61.Ke5 Re7 62.Kf6 Qf7 63.Kg5 Re1 64.Kh6 Rg1 (65.a6 Qg6) 0–1. jaskier (2125) – MerchantParkPro (1950), internet, 2006.

7.g5 Ne4 8.d3 Nd6 9.Nbd2 h6 (9...e5 10.c4 dc4 11.dc4=) 10.e4 (10.gh6 Rh6 11.c4 dc4 12.dc4 c6=) 10...de4=+ 11.Nh4 (11.de4 Ne4 12.Nh4 Bh7=+ (< 12...Ng5 13.f4+=)) 11...Bh7 12.g6 fg6 13.Rg1 (13.de4 e5 14.Qg4 Qf6=+) 13...e5–/+ 14.Ng6 Bg6 15.Rg6 e3 16.Nc4 (16.Ne4 Ne4 17.Qh5 ef2 18.Ke2 Kf7 19.Rg2 Ke7 20.de4 Qe8=) 16...ef2–/+ 17.Kf2 Qe7 (17...Qh4 18.Kg1 Nc4 19.dc4–/+) 18.Kg1 (18.Nd6 cd6 19.Qf3 Nf6=+) 18...Qf7 (18...Nc4 19.dc4 0-0-0 20.Bg2=+) 19.Qg4 h5 20.Qg2 (20.Nd6 cd6 21.Qg2 0-0-0=+) 20...Nf5 (20...Nc4!? 21.dc4 c5=+) 21.Rg5 (21.Ra6 c6 22.Ra5 Be7=) 21...Be7 22.Rf5 (22.Qb7 Rb8 23.Rf5 Qg6 (< 23...Qf5 24.Qc7 0-0 25.Qa7+=) 24.Qg2 Qf5=) 22...Qf5 23.Qb7 0-0 24.Bg2 Qf2 25.Kh1 Rad8 (25...Nf6 A) 26.Be5?! A1) 26...Qc2?? 27.Bf6 gf6 28.Qd5 Kg7 29.Be4+– (< 29.Qh5 Rh8 30.Qg4 Kf8 31.Ba8 Qd3 32.Qc8 Qd8 33.Qd8 Bd8+–); A2) 26...Rae8=; B) 26.Qc7 Rae8 27.Ne5+/–) 26.Qd5 Qf7 27.Qc6 (27.Ne5? Ne5 28.Qa5 Ng6 29.Qh5 Nf4 30.Qf7 Rf7–+) 27...Qe8 (27...Qf2!?=) 28.Qc7+= (< 28.Ne5 Ne5 29.Be5 Qc6 30.Bc6 Rf2 31.Bc7 Rc8 32.Bd5 Kf8=+; < 28.Be5 Ne5 29.Ne5 Bd6 30.Qd5 Kh8=+) 28...Rf2 29.Qa7 (29.Ne5 Ne5 30.Be5 Rd7+=) 29...Rc2 30.Rg1 Bf6 (30...Nf6 A) < 31.Be5 Rd3 32.Nd6 Qd7 (32...Rd6? 33.Bd6 Bf8 34.Bf4+–) 33.Qd7 Nd7 34.Bd5 Rd5 35.Rg7 Kf8 36.Rf7 Kg8 37.Rg7 Kf8 38.Rf7 Kg8 39.Rg7=; B) 31.Qe3+/–) 31.Bd5 (31...Kh7 32.Qe3+=) 1–0. michaelbuss – marekt, chessworld.net, 2007.

7.Nh4 e5 =+.

5.a4 ab5 6.ab5 Ra1 7.Ba1 Qa8 (7...Ngf6 8.h3 Bf3 9.ef3+=) 8.Nc3 Ngf6 9.e3 e5 10.Be2 Bb4 (10...Bd6 11.0-0+=) 11.0-0 Qa5 (11...0-0 12.h3 Be6 13.Qb1+=) 12.Qb1 (12.Bb2!?=) 12...0-0+= 13.h3 Bf3 14.Bf3 c6 15.Bb2 Ra8 16.bc6 (16.Be2 c5 17.f4 ef4 18.Rf4 d4 19.ed4 cd4–/+) 16...bc6 17.Qa1 Qd8 18.Qb1 Qe7 19.d3 (19.d4 e4 20.Be2 Qe6–/+) 19...h5 (19...Qe6 20.Be2–/+) 20.e4 Qc5 21.Nd1 (21.Ne2 Rb8+=) 21...de4 (21...d4 22.Qc1+=) 22.de4 Bd2 23.Ba1 (23.Bc1 Rb8 24.Bb2 Nb6+=) 23...Qa5 (23...Qb4 24.Bb2+=) 24.Bb2 Qb5 25.Nc3 Qc5 (25...Qc4 26.Ne2+=) 26.Ne2= Rb8 27.Nc1 (27.Qa1 g5 28.Qd1 g4 29.hg4 hg4 30.Bg4 Ne4=) 27...Bc3 28.Nb3 Qc4 29.Bc3 Qc3 30.Qd1 Nf8 31.Re1= Ne6 32.Re3 Qb2 33.Qd6 Rc8 34.Qd3 Nf4 35.Qa6 Rd8 36.Qa5 Rd6 37.Qc5 Re6 38.Re1 Nd7 39.Qc4 Rd6 40.Ra1+/– g5 41.Kh2 ½–½. Fernandez Fornes,Juan A – Khasin,Abram, corr CAPA Bartis Memorial, 1999.

5.a4 Ngf6 6.e3 ab5 7.ab5 Ra1 8.Ba1 e6 9.Be2 Bd6 10.0-0 0-0 11.c4 c6 12.d4 Ne4 (12...Bf3 13.Bf3 Qc7 14.bc6 bc6 15.h3=+) 13.Nbd2 Nd2 14.Nd2 Be2 15.Qe2 f5 (15...Qh4 16.f4=) 16.c5+= Bc7 17.b6 Bb8 18.Bc3 e5 19.Nf3 e4 20.Nd2 f4 21.ef4 Bf4 22.g3 Bb8 (22...Bh6 23.f4=) 23.f3= ef3 24.Rf3 Rf3 25.Nf3 Qf8? (25...Nf8 26.Ne1=) 26.Bd2 (better 26.Qe6!? Qf7 27.Ng5 Qe6 28.Ne6+-) 26...h6+= 27.Ne1 Qf7 28.Nd3 Nf6 29.Nf2 Qe8 (29...Kh7 30.Qd3 Qg6 31.Qe3=) 30.Qe8+= Ne8 31.Nd3 Kf7 32.Nb4 (32.Bf4 Bf4 33.gf4 Ke6+=) 32...g5= 33.Kf2 Nf6 34.Kf3 Ke6 35.Nc2 Ne4 36.Be3 h5 37.Kg2 g4 38.Na1 Kd7 39.Nb3 Nc3 40.Bg5 Nb5 41.Kf2 Kc8 42.Ke3 Nc3 43.Bf4 Nd1 44.Kd2 Bf4 45.Kd1 (45.gf4 h4 46.Ke2 Nc3 47.Kf1 Ne4=) 45...Bg5 46.Ke2 Kd7 47.Kf2 Kc8 48.Na1 Bf6 49.Nc2 Bg5 (49...Kd7 50.Ke3=) 50.Ke2 (50.Ne3!?+=) 50...Kd7= 51.Ne1 Ke6 52.Ng2 Kf5 53.Kd3 Ke6 54.Ne1 Kd7 55.Nc2 Ke6 56.Nb4 Kd7 57.Nc2 Ke6 58.Na3 Kd7 59.Nb1 Ke6 60.Nc3 Kd7 61.Na4 Ke6 62.Nb2 Kd7 63.Nd1 Ke6 64.Nf2 Kd7 65.Ke2 Ke6 66.Nd3 Kf5 67.Ne5 Ke6?? (better 67...Bd8=) 68.Nc6!+- 1-0. BeepBeepImAJeep (2620) - Eggplant (2335), lichess.org, 2015.

5.e3 ab5 6.Bb5 Ngf6=.

5.a4 f6 6.e3 e5 7.Be2 e4 8.Ng1 Be6 9.d3 f5 (9...ed3 10.cd3 a6 11.Nf3=) 10.Nd2 (10.Nh3 Qe7=) 10...Ngf6 11.Nh3 Bd6 12.g3 (12.Ng5 Qe7=) 12...Qe7=+ 13.Nf4 Bf7 14.c4 d4 15.ed4? (better 15.de4 de3 16.fe3 fe4 17.0-0=) 15...e3?? (better 15...Bf4 16.0-0 Bg5-+) 16.fe3+/- Qe3 17.Nf1 (17.Ng2 Qg5+/-) 17...Qe7+= 18.dc5 Nc5 19.Ng2 0-0-0 20.Nfe3 f4 (20...g6 21.0-0+/-) 21.Nf5 Qd7 (21...Qc7 22.Bf6 (worse 22.gf4 Bf4 23.Ng7 Bg3 24.Kf1 Be5=; 22.Nf4?! Bf4 23.gf4 Qf4=; 22.Ng7?! Be5 23.b6 ab6+=; 22.Nd6?! Rd6 23.Nf4 g5+/-) 22...gf6 23.Nd6 Rd6 24.Nf4 Qa5 25.Kf2+-) 22.Bf6 Qf5?? (better 22...gf6 23.Nd6 Qd6 24.Nf4 Qd4+/-) 23.Bg4+- (23.Bg4 Nd3 24.Kf1 Qg4 25.Qg4 Rd7 26.Bd4+-; 23.Bd8?! f3 24.0-0 fe2 25.Qe2 Qe5 26.Qe5 Be5+-) 1-0. BeepBeepImAJeep (2825) - luka1950 (2485), lichess.org, 2017.

5.a4 Ngf6 6.a5 h6 7.c4 (7.e3 Be6=) 7...d4 Black gets more space (7...e6 8.h3 Bf5 9.a6=) 8.d3 Consolidates e4 (8.a6 Qb8=) 8...e5 (8...a6 9.b6=) 9.g3 (9.a6 Qc8=) 9...e4 10.de4 Ne4 11.Bg2 Nd6 12.Qb3 Be7 13.a6 b6 14.e3 0-0 15.0-0 de3 16.fe3 Be6 (16...Re8 17.Nc3=) 17.Nfd2 Bg5 18.h4 (18.Qd3 Qe7 19.Ba8 Ra8=) 18...Bf6 19.Bf6 Nf6 20.Ba8 Qa8 21.Nc3 Bh3 22.Rf3 Rd8 23.Ra2 Nc4 24.Qc4 Be6 25.Qe2 Ba2 26.Rf6 gf6 27.Na2 Qd5 28.Nc4 Qd7 29.Nc3 Qh3 30.Ne4 Kg7 31.Ncd6 Qe6 32.Qd2 Rd7 33.g4= Qg4 34.Qg2 Qg2 35.Kg2 Kg6 36.h5+/– Kg7 37.Nf5 Kf8 38.Kf3 Rd5= 39.Kf4 c4 40.Nd4 Rh5 41.Nf6 Rh4 42.Kf3 c3 43.Ke2= Rh1 44.Kd3 h5 45.Kc3 h4–/+ 46.Ng4 h3 47.Nf3 f5 48.Ngh2 Ke7–+ 49.Kd2 Kd6 50.Ke2 Kc5 51.Nf1 Kb5 52.Kf2 Ka6 53.Nd4?? h2 (53...h2 54.Ng3 Rg1–+) 0–1. Grunberg,Mihai (2440) – Ezsol,Miklos (2370), HUN–chT2, 2002. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.b5)

5.a4 Nb6 6.e3 e6 7.Be2 Nc4 8.0-0?? (better 8.Bc4 dc4 9.Qe2=) 8...Nb2-+ 9.Qc1 Nc4 10.d3 Nd6 11.h3 Bh5 12.Nbd2 Be7 13.c4 0-0 14.c5 Nc8 15.d4 c6 (15...b6 16.Bd3-+) 16.Qd1 (16.Bd3 Qc7-+) 16...Ne4 (16...Qc7!? 17.bc6 bc6 18.Bd3-+) 17.Ne4 de4 18.Ne5 Be2 19.Qe2 f6 (19...cb5 20.Qb5 Qd5 21.c6-+) 20.Nc4? (20.bc6 fe5 21.cb7-+) 20...cb5 21.ab5 a6 (21...Qd5 22.b6-+) 22.Rfb1 (better 22.Nd2-+) 22...Na7?? (better 22...Qd5-+) 23.ba6= ba6 24.Ra6 Qc8?? (better 24...Rb8 25.Rb8 Qb8 26.Re6 Qb1 27.Qf1 Qb7=) 25.Rba1 (25.Nb6 Qb7 26.Qa2 Rae8 27.Ra7 Qc6+-) 25...Qb7? (better 25...Bc5 26.dc5 Qc5+/-) 26.Re6?? (better 26.Nb6 Rae8 27.Ra7+-) 26...Nb5 (26...Nc8 27.Na5 Qb4=+) 27.Rb1 (better 27.Na5 Qd7 28.Qc4+=) 27...Rfb8?? (better 27...Nd4 28.Qd1 Qb1 29.Qb1 Ne6 30.Qe4 Kf7 31.Nd6 Bd6 32.cd6 Rfb8-/+) 28.Nb6 (28.Rb6 Qc7 29.Qb2 Rb6 30.Nb6 Ra5+-) 28...Nc3? (better 28...Na3 29.Rc1 Ra7+/-) 29.Qc4+- Nb1? (29...Kf7 30.Re4 Kf8+-) 30.Re7 Kh8 31.Rb7 Rb7 32.Na8 Nd2 33.Qd5 (better 33.Qa2 Rb8 34.Nb6+-) 33...Rb1-+ 34.Kh2 Nf1 35.Kg1 Ng3 (better 35...Ne3 36.Kh2 Nd5-+) 36.Kh2= Nf1 37.Kg1 Ne3 38.Kh2 Nd5 39.Kg3 Rb8 (better 39...Rb3 40.Kh2-+) 40.Nb6 Nb6 41.cb6 Rb6 42.Kf4 f5! 43.g4 (43.Kf5 Rf6 Double attack (43...Rb5 Decoy)) 43...fg4 44.hg4 Rb4 (better 44...Rf6!? 45.Ke4 Rf2 46.Ke3-+) 45.Ke4 Kg8 46.f4 (46.Ke5 Rb3-+) 46...Kf8 (46...Kf7 47.Ke5-+) 47.Kd5 Ke7 48.Kc5 Ra4 49.g5 (49.Kd5 g6 50.g5 Ra5 51.Kc6 Rf5-+) 49...Ra5 50.Kc4 (50.Kb4 Rf5-+) 50...Rf5 51.Kd3 Rf4 52.Ke3 Rf5 53.g6 (53.Ke4 Rg5 54.Kf4 h6-+) 53...Rh5 (better 53...h5 54.Ke4 h4 55.Kf5-+) 54.gh7 Rh7 55.Ke4 Rh6 56.Kf5 Rd6 57.Ke5 (57.Ke4 Rf6 58.Ke5 g5-+) 57...g6 58.d5 Kd7 59.Ke4 (59.Kf4 Rd5 60.Kg3 Ke6-+) 59...Kc7 (better 59...Rf6 60.Ke5 g5 61.Kf6-+) 60.Ke5 Kd7 61.Ke4 Ra6 (better 61...Rf6 62.Ke5 g5 63.Kf6-+) 62.Ke5 Ra5 63.Ke4 Kd6 64.Kf4 Rd5 65.Kg4 Rf5 (65...Ke5 66.Kg3 Rd3 67.Kf2 g5 68.Kg1 Kf4 69.Kg2 Rd2 70.Kg1 Kf3 71.Kh1 Kg3 72.Kg1 Rd1) 66.Kg3 Ke6 67.Kg4 Kf6 68.Kg3 (68.Kh4 Rf3 69.Kg4 Ra3 70.Kf4 g5 71.Ke4 g4 72.Kd4 g3 73.Kc4 g2 74.Kb5 g1Q 75.Kc4 Qc1 76.Kd4 Qc3 77.Kd5 Ra4 78.Kd6 Rd4) 68...g5 (68...Kg5 69.Kg2 Kg4 70.Kh2 Rf2 71.Kh1 Kg3 72.Kg1 g5 73.Kh1 Rf1) 69.Kg4 Rf4 70.Kg3 Kf5 71.Kg2 (71.Kh3 Rf3 72.Kh2 Kf4 73.Kg1 Kg3 74.Kh1 Rf1) 71...Re4 (71...Kg4 72.Kh2 Kf3 73.Kh1 Kf2 74.Kh2 Rh4) 72.Kh3 (72.Kf2 Kf4 73.Kg2 g4 74.Kf2 g3 75.Kg2 Re2 76.Kg1 Kf3 77.Kf1 g2 78.Kg1 Re1 79.Kh2 Rh1) 72...Re3 (72...Re2 73.Kg3 g4 74.Kh4 Re3 75.Kh5 Rh3) 73.Kg2 Rd3 (73...Kg4 74.Kf1 Kg3 75.Kg1 Re1) 74.Kf2 Rd4 (74...Kf4 75.Kf1 Kf3 76.Kg1 g4 77.Kh1 Kg3 78.Kg1 Rd1) 75.Ke2 If White now would get Kf4 in, he might survive 75...Rc4 76.Kf2 If White now only could play Rf4+... 76...Rb4 77.Ke3 Ra4 78.Kd3 If White now would get Rf4 in, he might survive 78...Ra3 79.Kc4 Kf4 80.Kd4 (80.Kb4 Re3 81.Kb5 g4 82.Ka6 Re5 83.Ka7 g3 84.Kb7 g2 85.Kc6 g1Q 86.Kc7 Qg7 87.Kd6 Qf6 88.Kd7 Re7 89.Kc8 Qh8) ½-½. BeepBeepImAJeep (2490) - KemChuoi (2445), lichess.org, 2018.

5.a4 e6 6.e3 Bd6 7.Be2 0-0 8.d4 c5 9.dc5 Nc5 10.0-0 Rc8 11.Nbd2 Nce4 12.c4 (12.Ne4 Ne4 13.h3 Bh5=+) 12...Bf3-/+ 13.Bf3 Nd2 14.Qd2 Rc4 15.Rfc1 Rc1 (15...Ne4 16.Be4 Re4 17.Bd4-/+) 16.Rc1=+ Nd7 17.e4 de4 18.Qd6 ef3 19.gf3 Nb6 (19...Nf6 20.Qd8 Rd8=) 20.Qg3 (better 20.Qe5!? Qf6 21.Qf6 gf6 22.Bf6=+) 20...f6-/+ 21.a5 (21.Ba3 Rf7-/+) 21...Nd5-+ 22.a6 (22.Qg4 Re8 23.Qa4 Qd7-+) 22...ba6 23.ba6 (23.Ba3 Re8 24.ba6 e5-+) 23...Qb6 24.Ba3 Re8 (better 24...Rd8!? 25.Bc5 Qa6 26.Be3-+) 25.Qd6 Qd6 26.Bd6 Rd8 27.Rc6 Kf7 28.Kf1 Rd7 (28...e5 29.Bc5 Rd7 30.Ke1-+) 29.f4-/+ Kg6 30.Ke2 Kf5 31.Kf3 h5 32.h4 Kg6 33.Bc5 Kf7 34.Bd6 g6 35.Ke4 f5 36.Ke5 (better 36.Kf3-/+) 36...Nb4= 37.Rc7 Rc7 38.Bc7 Na6 39.Bd6 Ke8 40.Ke6 Kd8 41.f3 Nc7 42.Kf7 Kd7 43.Be5 Nd5 44.Kg6 Ke6 45.Kh5 Kf7 46.Kg5 Ne7 (46...a5 47.h5+-) 47.h5 a5 48.h6 Kg8 49.Kf6 (better 49.Bd6 Nc8 50.Bc5+-) 49...Nc6 50.Ba1 (50.Kf5!? Kh7+-) 50...Kh7+/- 51.Kf5 Kh6 52.Ke6 Kh7 53.f5 Kg8 54.f6?? (better 54.Kd7 Nb4 55.Ke8+-) 54...Kf8 55.Bb2 Nd8 56.Kf5 (56.Kd7!? Nf7 57.f4+/-) 56...Kf7= 57.Ke5 Nc6 (57...Ne6!?=) 58.Kd5+/- Nb4 59.Kc4 Nc2 60.Kb5 (60.Bc3 a4+/-) 60...Ne1= 61.f4 Nd3 62.Be5 Nf4 63.Bf4 Kf6 64.Ka5 ½-½. Timmermans,Mark (2385) - Le Tuan Minh (2510), Titled Tuesday 1st June, 2021.

5.a4 Bf3 6.gf3 e5 7.Rg1 g6 8.e3 Bc5 9.a5 0-0 10.a6 b6 11.Ra4 (11.Bh3 Qe7=) 11...Qe7 12.f4 (12.Qe2+=) 12...e4 (better is 12...Bd6!? 13.fe5 Be5 14.Be5 Qe5+=) 13.h4+= Ne8 (13...h5 14.Rg5+=) 14.Qh5+/– f5 15.Qh6 Ndf6 16.Be2 (16.h5 Qg7 (16...Nh5?? 17.Qh5 Qe6 18.Nc3+-) 17.Qg5 gh5+/–) 16...Rf7 (16...Ng4 17.Bg4 fg4 18.Qg5+=) 17.Nc3 (17.h5!? Qf8 18.Qg5+/–) 17...Qe6 18.h5 Bf8 19.Qg5 Rg7 20.h6 (20.hg6? Rg6 21.Rh1 Rg5 22.fg5 Rd8 23.gf6 Nf6–+) 20...Rd7 21.Na2 Be7 22.Qg2 (22.Qg3 c5+=) 22...c5 23.bc6 (23.Be5 Nd6=) 23...Qc6= 24.Nc3 Nd6 25.Qf1 (25.Ba3 b5 26.Rd4 Qa6 27.Bd6 Qa1 28.Bd1 Rd6–/+) 25...Rc8 (25...Ng4+=) 26.Rd4 (26.Qh3!?=) 26...Nc4–/+ 27.Ba1? (better is 27.Bc4 dc4 28.Ne2–/+) 27...b5–+ 28.Bc4 bc4 29.Qh3 Kf7 30.Ne2 Rb8 31.Kf1 Rb1 32.Kg2 Rg1 33.Kg1 Qa6 34.Bc3 Bc5 35.Qh4 Ng4 36.Ng3 Qe6 37.Kg2 Bd4 38.Bd4 Qe7 (38...Qe7 39.Qh1 a5–+) 0–1. Nadanian,Ashot (2375) – Ponomariov,Ruslan (2565), Kiev–NIKA, 1997. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.b5 Ngf6)

5.a4 g6 6.h3 Bf3 7.ef3 Bg7 8.Be2 0-0 9.0-0 e6 10.d4 c5 11.bc6 bc6 12.Qd2 Qb6 13.Ra2 c5 14.c4 Rfd8 15.Na3 a6 16.a5 Qd6 17.cd5 ed5 18.dc5 Nc5 19.Nc2 Ne6 20.Rd1 Rab8 21.Ba3 Qc7 22.Nb4 Qa5 23.Nc6 Qd2 24.Rad2 Rb3 25.Nd8 Ra3 26.Ne6 fe6 27.Rc2 a5 28.Rc6 e5 29.Ba6 h5 30.Re6 a4 31.Bb7 d4 32.Re5 Rc3 33.Ra5 a3 34.Kf1 Nh7 35.Be4 Nf8 36.Rd3 1–0. Ceplecha,T – Wiener,R, OCC–2002–01, 2002.

5.e3 e5 6.Be2 Bd6 7.h3 Bh5 8.Nh4 (8.0-0 0-0=+) 8...Be2–/+ 9.Qe2 g6 (9...Nb6 10.d4 e4 11.Ba3–/+) 10.Nf3 a6 11.Nc3 0-0 12.0-0 e4 13.Nd4 ab5 14.Ndb5 Bc5 15.a4 c6 16.Nd4 Re8 (16...Bd4 17.ed4 Re8 18.Qe3=+) 17.Ba3 (17.Nb3 b6=+) 17...Ba3 18.Ra3 Qe7 19.Rfa1 Ne5 20.d3 (20.a5!?=+) 20...b5–/+ 21.R3a2 (21.Nd1–/+) 21...ba4 (21...b4 22.Nd1=+) 22.Nd1? (better is 22.Ra4!? Ra4 23.Ra4=) 22...c5 (better is 22...Qb4!?–+) 23.Nb5=+ ed3 24.cd3 c4 (24...d4 25.ed4 cd4 26.Qc2=+ (26.Ra4? Ra4 27.Ra4 Qd7–+)) 25.d4 (25.dc4 Nc4 26.Ra4 Ra4 27.Ra4 Rb8=) 25...Nc6 (25...Nd3 26.Ndc3=+) 26.Qf3 (26.Ndc3 Nb4 27.Ra4 Ra4 28.Ra4 Nd3=) 26...Reb8 (26...Ra5 27.Ndc3 Rb8=) 27.Nc7 (27.Ndc3 Ra5 28.Nc7 Rc8 29.N7d5 Nd5 30.Nd5 Rd5 31.Qd5 Nb4+=) 27...Ra5 (better is 27...Ra7!? 28.Nd5 Nd5 29.Qd5 Nb4 30.Qc4 Na2 31.Qa2 Qe6–/+) 28.g4?? (28.Nc3 Rc8 29.N7d5 Nd5 30.Nd5 Rd5 31.Qd5+=) 28…Rb3 (29.Ra4 Nd4–+ (29...Qc7?! 30.Ra5 Na5 31.Qf6=+); 28...Rc8!? 29.Nd5 Nd5 30.Ra4 Ra4 31.Ra4–+) 0–1. Farleigh,Richard (2200) – Ivanov,Alexander (2530), World op Philadelphia, 1995.

5.e3 e6 6.h3 Bf3 7.Qf3 c6 (7...Bd6 8.c4=+) 8.a4 (8.Be2 Bd6=) 8...a6 (8...Bd6 9.a5=+) 9.c4 ab5 10.cb5 (10.ab5 Ra1 11.Ba1 Bd6=) 10...Bb4 (10...Bd6 11.bc6 bc6 12.Be2=+) 11.Qf4 (11.Be2 Qa5=) 11...Qa5=+ 12.Be2 0-0 13.0-0 (13.Nc3 e5 14.Qf5 d4–/+) 13...Bd2–/+ 14.bc6 (14.Qf3 c5–/+) 14...bc6 15.Ba3 (15.Nd2 Qd2 16.Bf6 Nf6–/+ (16...gf6?! 17.Qg4 Kh8 18.Rfd1=)) 15...e5 16.Qh4 (16.Qf5 Rfc8–/+) 16...Rfb8 17.Bd6 Rb7 (17...Rb2 18.Ba3 Rb3 19.Nd2 Qd2 20.Bd1–+) 18.Nd2 Qd2 19.Bg4 Ng4 20.Qg4 Qb2 (20...e4 21.Qf5–/+) 21.a5 Qb5 22.Qf5 g6 23.Qc2=+ Qa6 24.Qc3 f6 25.Rfc1 Rc8 26.Qd2 Kf7 27.e4 Rb5 28.ed5 Rd5 29.Qa2=+ Ke6 30.Bb4= Rb8 31.Be1 Rbb5 32.Rc2 Rbc5 33.Rac1 Rc2 34.Qc2 c5 35.Qb3 Kd6 36.Qa4 Rd4 37.Qb3= e4 38.Qg3 Kc6 39.Bc3+= Rd3 40.Qf4 f5 41.Qh6+= Qc4 42.Be1 Qf7 43.Qf4 Qd5–/+ 44.f3 ef3–+ 45.Qa4 Kb7 46.Rb1 Ka7 47.Qf4 Qd4 48.Qd4 cd4 49.gf3 Ne5 50.Kg2? Nf3 (51.h4 Ne1 52.Re1 Re3–+; 50...Rf3?! 51.Rb5 Re3 52.Bf2–+) 0–1. Sergeeva,Tatyana (2165) – Zaitseva,Ludmila G (2375), Yerevan ol (Women), 1996 (even known (!!!) as "Goldenberg – Vera, (½–½), North Bay, 1997" /mt).

5.Na3 a5 6.ba5 Ra5 7.Nc4 +=.

5.Na3 Nb6 6.Qc2 =.

5.Na3 e5 6.Ne5 Ne5 7.Be5 Qd5 8.Bc7 Nf6 9.Rc1 Rc8 10.Bf4 b5 11.f3 Bd7 12.Nc2 Qe6 13.Be3 Nd5 14.Bd4 Qh6 15.Ba7 Nb4 16.Rb1 Na2 17.Rb2 Qa6 18.Bd4 b4 19.e4 Qd6 20.Qa1 b3 21.Bf2 Qf6 22.Ra2 ba2 23.Qa2 c3 24.d4 Qg6 25.Qb3 Bd6 26.Bb5 0-0–+ 27.Bd7 Rb8 28.Bb5 Qg2 29.Rg1 Qf3 30.Kf1 Qe4 31.Ne3 Rfc8 32.Ke2? Qd4 33.Rd1 Qf6 34.Nc4 Qe6 35.Be3 Qg4 36.Ke1 Bh2 (37.Rd4 Bg3 38.Kf1 Qh3 39.Ke2 Qh5 40.Kd3 Rb5–+) 0–1. Pierred (2195) – Alansacount (2685), Rated game, 3m + 0s, 2005.

5.Na3 Bf3 6.ef3 e6= 7.Nc4 Ngf6 8.a3 (8.Qb3 Be7=) 8...Be7= 9.Be2 (9.Qb3 0-0=) 9...0-0 10.0-0 Nd5 11.Re1 (11.g3 Bf6=) 11...Bf6 12.Bf6 Qf6 13.d4 Rfd8 (13...h5 14.Bd3=) 14.Bd3 c6 (14...N7b6 15.Ne5=) 15.Qc2 (15.Be4 Nf8=) 15...Nf8 (15...g6 16.Qb2=) 16.Rad1 Nf4 (16...Ng6 17.Be4=) 17.Bf1 (17.Be4 Rd4 18.Rd4 Qd4+=) 17...Rd4 18.Rd4 Qd4 19.Re4 Qf6 20.Na5 Rb8 21.Qc5 (21.b5!?=) 21...b6+= 22.Qc6 (22.Qd6 Nh3 23.gh3 Rd8 24.Qc6 ba5 25.ba5 h5–/+) 22...Ng2 23.Kg2 (23.Kg2 ba5 24.Qc7–/+). Rosner,Dirk – Haller, Tiger SC, 2000.

5.Na3 Bf3 6.gf3 Nb6 =.

5.Na3 Bf3 6.gf3 e6 7.Nc4 Ngf6 (7...Bb4?? 8.Bg7 Qh4 9.Qb3+- (9.Bh8?! Qc4 10.a3 Ba5+-)) 8.Qb3 c5 9.b5 Nb6 10.e3 Nc4 11.Bc4 Bd6 12.Rg1 Rg8 13.Rg2 Be7 14.Rc1 g6 15.f4 Rf8 16.a4 Nd7 17.Be2 Bf6 18.Bf6 Qf6 19.Bf3 Rb8 20.d4 b6 21.Bc6 cd4 22.Rd1 Rg8 23.Rd4 Rd8 24.Qd1 Qe7 1–0. Thau,Oliver – Binder,Klaus, DESC, 2001. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.c4 dc4)

5.Na3 Bf3 6.gf3 Ngf6 +=.

5.Na3 f6 6.e4 e5 7.Bc4 Nh6 8.Nc2= Nb6 9.Be2 Be7 10.Ne3 Be6 11.a3= Qd7 12.0-0 Rd8 13.d4 Na4 14.d5 Bf7 15.Qc2 Nb2 16.Qb2 0-0 17.Rac1 Bd6 18.Nc4 Bg6 19.Bd3 Nf7 20.Qc2 Rc8 21.Nfd2 c6= 22.dc6 Rc6 23.Qb3 Rfc8 24.b5 Rc5 25.a4 Be7 26.Rc3 b6 27.Rfc1 Qc7 28.R3c2 Qb7 29.f3 Qd7 30.Kf1 Rd8 31.Be2 f5 32.Ne3 fe4 33.fe4 Qd4 34.Bc4 Bg5 35.Re1 Be3 36.Re3 Kh8 37.Qc3 Nd6–/+ 38.Rd3 Rf8–+ 39.Rf3 Rf3 40.Qf3 Qa1 41.Ke2=+ Rc8 42.Bb3 Rd8 43.g4 Ne4=+ 44.Ne4 Qd1 45.Kf2 Qd4 46.Qe3 Be4 47.Qd4 ed4 48.Rc7 h5 49.gh5 Kh7 50.Ra7 Kh6 51.Bd1 Rf8 52.Ke1 Rd8 53.h4 Rd6 54.Re7 Bh7 55.Re8 d3 56.Bg4 Rf6+= 57.Re6 Bg8 58.Rf6+/– gf6 59.Bf3 Be6 60.Kd2 Bf5 61.a5 ba5 62.b6 Bc8 63.Kd3 f5 64.Kc4 Ba6 65.Kb3 Bc8 66.Ka4 Kg7 67.Ka5 Kh7 68.Kb5 Kg7 69.Kc6 Kh7 70.Kc7 Ba6 71.Be2! (71...Be2 72.b7+-) 1–0. Labahn,Wolfgang – Korpalski,Robert, Beskidy op, 1992.

5.Na3 Ngf6 6.Nc4 e6 7.Nfe5 (7.Qb3 Be7=) 7...Bf5 (7...Bh5 8.f3=) 8.a3 (8.f3 Bg6+=) 8...Be7 (8...Ne5 9.Ne5 c6 10.Qa4=) 9.f3+= 0-0 10.e4 Ne5 11.Ne5 Bg6 12.Ng6 (12.Be2 c6+=) 12...hg6= 13.Rc1 (13.d4 a5 14.b5 Rc8=) 13...Nh5 14.d4 (14.g3 a5 15.b5 Qd6=) 14...Bg5 (14...a5 15.b5=) 15.Rc2 (15.Rc5 Bf4 16.g3 Bd6=) 15...Be3 (15...c6!?=) 16.g3+= Qg5 (better is 16...e5!? 17.de5 Qg5+=) 17.f4+- Nf4 (17...Bf4 18.gf4 Qf4 19.Qe2+-) 18.Qf3 (18.gf4?! Qh4 19.Ke2 Qg4 20.Ke1 Qh4 21.Ke2 Qg4 22.Ke1 Qh4 23.Ke2=) 18...Nh5 (18...c6 19.h4 (19.Qe3?? Ng2 20.Bg2 Qe3 21.Re2 Qd3–+; 19.gf4?! Bf4 20.h4 Qh6+-) 19...Qh6 20.gf4 (20.Qe3 Ng2 21.Bg2 Qe3 22.Re2 Qg3 23.Rf2 a5–+) 20...Bf4 21.Bc3+-) 19.Ke2 Bd4 20.Bd4 Rad8 21.Bc5 Rfe8 22.Bg2 b6 23.Be3 Qf6?? 24.Rc7 Qb2 25.Kf1 Qa3 26.e5 Rf8 27.Bg5 f6?? 28.Qa3+- (28.Qa3 fg5 29.Ke2+-) 1–0. aspasio – ThetheoSR, ICC, 1999.

5.Qc2 Bf3 6.ef3 e6 =+.

5.e4 Nb6 6.Qc2 Bf3 7.gf3 =+.

5.e4 e6 6.Bc4 Ngf6 7.e5 Nd5 8.h3 Bf3–/+ 9.Qf3 Nb4 10.Na3 Nb6 11.0-0 Nc4 12.Nc4 Qd5 13.Qc3 Nd3 14.Ne3 Qd7 15.Rab1 Rd8 16.Qc4 b5–+ 17.Qg4 a6 18.Bc3 c5 19.f4 c4 20.f5 h5 21.Qg5 Qc6 22.fe6 Qe6 23.Kh1 Rh6 24.Nf5 Rg6 25.Qh5–/+ b4 26.Ba1 Qd5 27.Ne3 Qe4 28.Qf5 Qf5 29.Rf5 Rc6 30.Rbf1 Rc7 31.e6 f6 32.g4 c3 33.dc3 bc3 34.g5 c2–+ 35.Nc2 Rc2 36.gf6 gf6 37.Bf6 Be7 38.a3 Bf6 39.Rf6 Ke7 40.h4 Rh8 41.Rf7 Ke6 42.R7f6 Kd7 43.Rf7 Ke8 44.R7f3 Rh4 45.Kg1 Rg4 46.Kh1 Rc3 47.Re3 Kd7 48.Rff3 Rc1 49.Kh2 Nf4 50.Rf2 Rc5 51.Rd2 Kc6 52.Kh1 Rh4 53.Kg1 Rg5 (54.Kf1 Rh1 55.Kf2 Rg2 56.Kf3 Rf1 57.Ke4 Rd2–+) 0–1. bicycle – marekt, chessworld.net, 2007.

5.c5 Qc7 6.d4 g6 7.Nbd2 Bg7 8.h3 Bf3 9.ef3 Nh6 10.Nb3 f6 11.Bd3 e5 12.0-0 0-0 13.Qc2 Rae8 14.de5 Ne5 15.Be2 Rf7 16.Nd4 White plans b5 16...Rfe7 17.Rfd1 Nd7 18.Bf1 Nf8 19.a4 Ne6 20.b5 Nd4 21.Bd4 Nf5 22.Bb2 Re6 23.Rab1 Bf8 24.bc6 bc6 25.Ba3 Rb8 26.Rb8 Qb8 27.a5 Qc7 28.Qc3 Qe5 29.Qb4 Qc7 30.a6 Re8 31.Rb1 Ng7 32.Qa4 Re7 33.Rb7 Qc8 34.Qb3 Ne6 35.Re7 Be7 Attacking the isolated pawn on c5 36.Qb7 Qc7 37.f4 Bd8 38.f5 gf5 39.Qb1 Ng7 40.Bc1 Qe5 41.Qb7 Qc7 42.Bf4 Qf4–+ 43.Qa7 Ne6?? 44.Qd7+- Qc7 45.Qe6 Kg7?? 46.Qd6 Qc8 47.a7 Bc7 48.Ba6!! (48.Ba6 Qa6 49.Qc7 Kg6 50.Qb8 Qa1 51.Kh2+-; 48.Qc6?? Bh2 49.Kh2 Qc6–+) 1–0. Al Hadarani,Hatim – Al Rashed,Naser, WchT U26 Graz, 1981. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.c4 c6)

5.cd5 cd5 6.Qa4 Bf3 7.gf3 e6 8.e3 a6 9.d4 Ngf6 10.Nc3 Bd6 11.Rg1 0-0 12.h3 Rc8 13.Qb3 Nb6 14.a3 Nc4 15.Rc1 Qe7 16.Na4 a5 17.Bc4 dc4 18.Rc4 Rc4 19.Qc4 ab4 20.ab4 Bb4 21.Kf1 Nd5 22.e4 Nf4 23.Rg4 Nh3 24.Bc1 f6 25.f4 Ra8 26.Nb2 Ra1 (better is 26...Ba3!? 27.Rh4 Qd7+=) 27.Kg2+= Qf7 28.Nd3 (28.Qb4 Rc1 29.Qa5 h5–+; 28.Kh3?! f5 29.Qc8 Bf8 30.ef5 ef5+/–) 28...Be7 29.Kh3 Qh5? (better is 29...f5!? 30.Qc8 Bf8+-) 30.Kg3+- Kf7? (30...Qf7+-) 31.f5 Qh1 (31...g5 32.Qe6 Ke8 33.Qc8 Bd8+-) 32.fe6 1–0. Thau,Oliver – Henke,Simon (1645), DESC, 2001. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.c4 c6)

5.cd5 cd5 6.Qa4 Ngf6 7.e3 Bf3 8.gf3 g6 9.Bf6 ef6 10.Nc3 d4 11.Nd5 a6 12.Bb5! ab5 (12...Bg7?? 13.Bd7 Qd7 14.Qd7 Kd7 15.Nb6) 13.Qa8 Qa8 14.Nc7 Kd8 15.Na8 Ne5 16.f4 Nd3 17.Ke2 Nb4 18.Rab1 Kd7 19.a3 Nd5 20.Rb5 Kc6 21.a4 Bc5 22.Rc1 b6 23.Nb6 1–0. Klaric – Kallay, Thessaloniki 1985.

5.cd5 cd5 6.Qb3 Ngf6 7.e3 Bf3 8.gf3 e6 9.Rg1 g6 10.Nc3 Bg7 11.Be2 0-0 12.d4 Rc8 13.Na4 b6 (13...Ne8 14.Nc5=+) 14.Ba6 Rc7 15.Nc3 Nb8 16.Bd3 Ne8 (16...Nc6 17.Kf1=) 17.Ke2 (17.Nb5!? Rb7 18.f4=) 17...Nd6= 18.Nb5 Nb5 19.Bb5 Qd6 (19...Qh4 20.Rac1 Rfc8 21.Rh1=) 20.f4 Rfc8 21.Rgc1 Bf8 22.a3 a6 23.Bd3 b5 24.Rc7 Rc7 25.Rc1 Rc1 26.Bc1 Nd7 27.Qc2 Nb6 28.Qc5 Nc4 29.Qc8 Qb6 30.Qa8 Kg7 31.Kd1 Be7 32.Ke2 Bd6 33.h3 Bb8 34.e4 de4 35.Qe4 Qd6 (better 35...f5!? 36.Qa8 Qd6=) 36.Bc4+= bc4 37.Qe5 f6 38.Qd6 Bd6 39.Kd1 g5 40.fg5 fg5 41.Bg5 Kg6 42.Bh4 Kf5 43.Kc2 Ke4 44.Kc3 Kd5 45.Bf6 Bc7 46.a4 h5 47.Be5 Bb6 Exerts pressure on the isolated pawn 48.Bf6 Bc7 49.f3 Bb6 50.Bg7 Bc7 51.Bf8 (51.Be5 Bb6+=) 51...Bg3= 52.Bc5 Bf2 53.a5 Be1 54.Kc2 Kc6 55.Kb2?? (better 55.Kd1 Bc3 56.Kc2=) 55...Kb5-+ 56.Ka3 Bd2 57.Bd6 Be3 (57...Bc1 58.Ka2 Ka4-+) 58.Bc5? (better 58.Kb2!?=+) 58...Bc1-+ 59.Ka2 Ka4 60.Bd6 (60.Kb1 Bd2 61.Kb2 Bb4-+) 60...Bd2 61.f4 (61.Kb2 Bb4 62.Bc7 Ba5-+) 61...Bb4 (61...c3 62.f5 c2 63.fe6 c1Q 64.e7 Qc2 65.Ka1 Bc3) 62.Bc7 (62.Be5 Kb5 63.d5 ed5-+) 62...Kb5 63.Kb2 (63.d5 ed5 64.Bb6 Bc3-+) 63...Kc6 64.Bb6 Kd5 65.Kc2 Ke4 66.Bc7 (66.Bd8 Kd4 67.Bb6 Ke4-+) 66...Kd4 67.Be5 (67.Bb6 Kd5 68.Kd1-+) 67...Kc5 68.Bc7 Kb5 69.Be5 Ba5 70.Bd4 Bb4 71.Bf6 a5 72.Be5 (72.f5 ef5 73.Bg5 a4-+) 72...a4 (72...c3!? 73.Bg7-+) 73.Kb2 (73.Bb2-+) 73…Kc6 (73...Kc6 74.Bd4 Kd5-+) 0-1. Okon,D (2190) - Popiol,M (2125), 33rd Gniot Memorial Open POL, 2018. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.c4 c6)

5.c5 a5 6.a3=+ A) 6...Ne7 7.Nc3 (7.d3 ab4 8.ab4 Nc6 9.Ra8 Qa8 10.Qb3 b6 11.d4 Be7 12.e3 0-0 13.Nc3; 7.h3 Bf3 8.ef3 Nc6 9.b5 Ne7 10.d4 Nf5 11.Nc3 Be7 12.g4 Nh4 13.Bd3) 7...Nc6 8.b5 Nce5 9.d4 Nc4 10.Bc1 Nf6 11.Qa4 Be7 12.Ne5 0-0 13.Ng4; B) 6...Ngf6 7.Nc3 (7.h3 Bf3 8.ef3 Be7 9.Nc3 0-0 10.Be2 d4 11.Na4 Ne5 12.0-0 ab4 13.ab4; 7.e3 ab4 8.ab4 Ra1 9.Ba1 Be7 10.h3 Bf5 11.Nh4 Bb1 12.Qb1 Ne4 13.Nf3) 7...Be7 8.h3 Bf3 9.ef3 0-0 10.Be2 b6 11.d4 bc5 12.bc5 Rb8 13.Rb1; C) 6...Bf3 7.gf3 (7.ef3 Ne7 8.h3 h5 9.Nc3 Nc6 10.b5 Nd4 11.Ne2 Ne2 12.Be2 Bc5 13.f4) 7...Ne7 8.d4 ab4 9.ab4 Ra1 10.Ba1 g6 11.Nc3 Bg7 12.Rg1 c6 13.e3; D) 6...b6 7.cb6 (7.d4 ab4 8.ab4 Ra1 9.Ba1 Be7 10.Nc3 Ngf6 11.h3 Bf5 12.g4 Bg6 13.c6; 7.c6 Ndf6 8.Ne5 ab4 9.ab4 Ra1 10.Ba1 Bf5 11.Qb3 Bd6 12.g4 Bb1 13.Qb1; 7.Nc3 ab4 8.ab4 Ra1 9.Qa1 bc5 10.bc5 Bc5 11.Nd5 Ngf6 12.Nf6 gf6 13.Nd4) 7...cb6 8.Nc3 Ngf6 9.ba5 Ra5 10.Nd4 Ne5 11.f3 Bh5 12.e3 Bd6 13.Ncb5; E) 6...ab4 7.ab4 Ra1 8.Ba1 Ne7 9.Qa4 f6 10.Nd4 Kf7 11.f3 Bh5 12.Nc3 c6 13.Bb2.

5.c5 Ngf6 6.d4 a5 7.a3 (7.b5 a4=) 7...Be7 8.e3 0-0 9.h3 (9.Bd3 ab4 10.ab4 Ra1 11.Ba1 Qa8=) 9...Bh5 10.Nc3 Ne4 11.Be2 Ndf6 12.0-0 Nc3 13.Bc3 Ne4 14.Qc2 b6 15.Bb2 Bf6 16.Rfc1 bc5 17.bc5 Bh4 18.Nh4 Be2 19.Qe2 Qh4 20.Rab1 Qg5 (20...Rfb8 21.f3 Ng3 22.Qf2=) 21.Bc3 Nc3 22.Rc3 e5 23.Rb7 c6 24.Qg4 Qg4 25.hg4 ed4 26.ed4 Rfe8 27.Re3 Kf8 28.Rf3 Re7 29.Re7 (29.Rb6 Re1 30.Kh2 Re6+=) 29...Ke7 30.Rb3 Ra7 31.f3 f6 (31...h6 32.Kf2+=) 32.Kf2+= Kd7 33.Rb8 Ke6 34.Ke3 a4 35.Rb6 Kd7 36.Kf4 Kc7 37.Kf5 Kd7 (37...Ra8 38.Ke6 Re8 39.Kf7+/-) 38.g5 fg5 39.Rb8 Rc7 (better 39...g4!? 40.f4 Rc7+-) 40.Rg8+- g6 41.Kf6 Rb7 42.Rg7 (42.Rg7 Kc8 43.Rb7 Kb7 44.Kg5+-; 42.Kg5?! Rb2+=) 1-0. marekt (2305) - extremo (2120), gameknot.com, 2021.

5.cd5 Qe7 6.de6+/- Be6 7.a3 Ngf6 8.Nc3 c5 9.bc5 Nc5 10.e3 Nb3 11.Bb5 Kd8 12.Rb1 a6 13.Be2 Rc8 14.0-0 b5 15.d4 Qb7?? (better 15...Nd5 16.Nd5 Bd5+-) 16.d5!+- Bf5 (16...Bd5 17.Nd5 Combination; 16...Nd5 17.Qb3 Decoy (17.Qb3 Interception)) 17.Qb3 Bb1 18.Rb1 Bd6 19.Nd4 h5 20.h3 Qc7 (20...Ke8 21.Nf5 Bf8 22.e4+-) 21.Rc1 Qd7 22.Nc6 Ke8 23.e4 Qc7 (23...Bf4 24.Rd1+-) 24.Nb5! Bh2 (24...ab5 25.e5 Combination) 25.Kh1 White prepares the advance e5 25...ab5 26.Bb5 Kf8 27.e5 Ng4 (27...Be5 28.Ne5 Qc1 29.Bc1 Rc1 30.Kh2 Ng4 31.hg4 hg4 32.Kg3 Rg1 33.Qb4 Kg8+-) 28.Qb4 Kg8 29.Ne7 Kh7 30.Rc7 (30.Rc7 Rc7 31.hg4+-) 1-0. Markus – Lennart, private game, 2022.

5.e3 Bb4?? 6.Bg7 Bf3 7.Qf3 +-.

6.ef3 a5 7.a3= (7.ba5 Ngf6 8.d4 Ra5 9.Nc3 c6 10.Rb1 Qc7 11.Bd3 e5 12.0-0 ed4 13.Re1) 7...Ngf6 8.Nc3 Be7 9.Be2 0-0 10.0-0 Ne5 11.Nb5 Nc4 12.Bc4 dc4 13.Qc2.

6.ef3 b6 7.c6 Ndf6 8.b5 Ne7 9.Nc3 Nf5 10.Bd3 Bb4 11.Qa4 Qd6 12.Ne2 0-0 13.Bf6.

6.ef3 c6 7.Be2 (7.Nc3 a5 8.a3 Ngf6= 9.Be2 b6 10.d4 Qb8 11.Rb1 ab4 12.ab4 Qb7 13.0-0; 7.d4 Qg5 8.Nc3 Ne7 9.Qd2 Qd2 10.Kd2 g6 11.Bd3 Bh6 12.Kc2 Nf5 13.Ne2; 7.Bd3 a5 8.a3 Ngf6 9.0-0 ab4 10.ab4 Ra1 11.Ba1 b6 12.cb6 Qb6 13.Qa4; 7.a3 Qc7 8.Nc3 Ngf6 9.d4 e5 10.Bd3 ed4 11.Ne2 Be7 12.0-0 0-0 13.Nd4) 7...b6 (7...a5 8.a3= ab4 9.ab4 Ra1 10.Ba1 Ngf6 11.0-0 Be7 12.Nc3 0-0 13.Bb2) 8.d4 (8.0-0 bc5 9.bc5 Nc5= (9...Rb8 10.Qc2 Ngf6 11.d4 Be7 12.Nd2 0-0 13.Rab1) 10.d4 Rb8 11.Qc2 Nd7 12.Nd2 Ngf6 13.Rab1) 8...Rb8 (8...Ne7 9.0-0 a5 10.b5 bc5 11.dc5 Nc5 12.Nc3 Rb8 13.Re1) 9.a3 (9.Bc3 Be7= (9...Ngf6 10.0-0 Be7 11.Nd2 0-0 12.Qc2 g6 13.g3) 10.0-0 Ngf6 11.Nd2 0-0 12.Qc2 Qc7 13.Rab1; 9.Qd2 bc5 10.bc5 Be7 11.0-0 Nh6 12.Bc3 e5 13.de5) 9...a5 (9...bc5 10.dc5 Ngf6 11.Nd2= Be7 12.0-0 0-0 13.Qc2) 10.Qd2 (10.Bc3 bc5 11.bc5 Ne7= 12.0-0 g6 13.Nd2) 10...bc5= 11.dc5 (11.bc5 g6= 12.0-0 Nh6 13.g4) 11...Ngf6 12.0-0 Be7 13.Bd3 (13.Nc3 ab4 14.ab4 Rb4=) 13...0-0=+ 14.Re1 (14.Rd1 Qc7=+) 14...Qc7 15.Bc3 (15.g3 Rb7=+) 15...e5 16.Bf5 (16.Qg5 Bd8 17.Qg3 d4–/+) 16...Rfe8–/+ 17.f4 ef4 18.Qd3 (18.Qd4 Nh5–/+) 18...g6 19.Bh3 ab4 (19...Nh5 20.Nd2–/+) 20.ab4 Bf8 21.Nd2 Bg7 22.Nf3 (22.Re8 Re8 23.Nf3 Kf8–/+) 22...h6 (22...Ne4 23.Bg7 Kg7 24.Bd7 Qd7 25.Reb1–/+) 23.Bd7 Qd7 (23...Nd7 24.h3–/+) 24.Re8 Ne8 (24...Qe8 25.Qd4–/+) 25.Re1 (25.Nd4 Nf6 26.Ne2 Qc7–/+) 25...d4 (25...Nf6 26.Qd2 Ne4 27.Qf4=+) 26.Bd2 (26.Bd4 Nc7 (worse 26...Rb4 27.Re8 Qe8 28.Bg7+-) 27.Qd2 Bd4 28.Qd4 Qd4 29.Nd4 Rb4 30.Nc6 Rc4=+) 26...Nc7 27.Bf4 Rb4 28.Ne5 Qe6 29.Nf3 (29.Qd2 Rb5 30.Nf3 Qd7=+) 29...Qc8=+ 30.Qd2 Rc4 31.Bh6 (31.Ne5 Ra4=+) 31...Ne6 32.Bg7 Kg7 33.h3 (33.Qd3 Rc3 34.Qe4 Qd8 35.Qc6 d3=+) 33...Qd8 34.Re4 Ra4 35.Qb2 (35.Qd1 Rb4–/+) 35...Qd5–/+ 36.Rh4 Qc5 (36...g5 37.Rh5 Qc5 38.Qb1–/+) 37.Qb8 Kf6 38.Re4 Qf5 39.Qh8 Ke7 40.Qh4 Qf6 41.Qg3 Ra1 (41...c5 42.Ng5 Kd7 43.Ne6 fe6 44.Rf4=+) 42.Kh2 c5 43.Ng5 ½–½. Hoch,Hubertus (2325) – Boehme,Sebastian (2560), remoteschach.de, 2009.

6.ef3 Ne7 7.Nc3 (7.a3 a5 8.Bb5 c6 9.Bd3 Ng6 10.0-0 Nf4 11.Bc2 h5 12.g3 Nh3 13.Kg2; 7.d4 g6 8.Be2 Bg7 9.0-0 0-0 10.Qd2 c6 11.Na3 Nf5 12.g4 Nh4 13.f4; 7.Bb5 a5 8.a3 c6 9.Bd3 Ng6 10.0-0 Nge5 11.Be2 ab4 12.ab4 Ra1 13.Ba1) 7...Nc6 8.a3 a5 9.b5 Nd4 10.c6 bc6 11.bc6 Nf6 12.Nb5 Nb5 13.Bb5.

6.ef3 Ngf6 7.Bd3 (7.Nc3 Be7 8.Be2 a5 9.a3 0-0 10.0-0 Ne5 11.Nb5 Nc4 12.Bc4 dc4 13.Qc2; 7.a3 a5 8.Nc3 Ne5 9.Nb5 Ng6 10.Be2 ab4 11.ab4 Ra1 12.Ba1 c6 13.Nd4; 7.Qc2 a5 8.a3 Be7 9.Nc3 ab4 10.ab4 Ra1 11.Ba1 0-0 12.Be2 c6 13.0-0; 7.d4 Be7 8.Bd3 a5 9.b5 Nh5 10.Nc3 Nf4 11.0-0 Nd3 12.Qd3 0-0 13.h3) 7...a5 8.a3 d4 9.0-0 Ne5 10.Qe2 Qd5 11.Re1 Nd3 12.Qd3 0-0-0 13.Rc1.

6.gf3 A) 6...Ngf6 7.Nc3 (7.d4 a5 8.b5 Be7 9.Nc3 0-0 10.Rg1 g6 11.Bg2 Nh5 12.Qd2 a4 13.f4) 7...Ne5 8.e3 a5 9.ba5 Ra5 10.d4 Nc4 11.Bc4 dc4 12.Qe2 Be7 13.Qc4; B) 6...Ne7 7.d4 (7.a3 a5 8.Nc3 Nc6 9.b5 Nce5 10.e3 Nc4 11.Bc4 dc4 12.Na4 Nc5 13.Nc5; 7.Nc3 a5 8.a3 Nc6 9.Nb5 ab4 10.ab4 Ra1 11.Qa1 Nb4 12.Qa5 Bc5 13.Bg7) 7...g6 8.Nc3 Bg7 9.e3 0-0 10.f4 a5 11.ba5 Ra5 12.h4 Nf6 13.Be2; C) 6...a5 7.a3 (7.ba5 Bc5 8.Rg1 Ne7 9.e3 Nf5 10.Bd3 d4 11.Bf5 ef5 12.Rg7 Qf6 13.Rg3) 7...Ngf6 8.Nc3 Ne5 9.e3 Be7 10.Nb5 Nc6 11.Rg1 0-0 12.Nd4 Qd7 13.Nc6.

6.a3 Be7 7.e3 (7.c6 bc6 8.Nd4 Nb8 9.Qc2 Qd6 10.Nc3 a5 11.ba5 0-0) 7...e5 8.h3 Bf3 9.Qf3 0-0 10.Be2 e4 11.Qf5 b6.

6.Nc3 Be7 (6...a5 7.a3 Be7 8.h3 Bf3 9.gf3 Ne5 10.e3 Qd7 11.f4 Nc4 12.Bc4 dc4 13.Qe2) 7.h3 (7.e3 a5 8.a3 0-0 9.Be2 b6 10.d4 Qb8 11.c6 ab4 12.ab4 Bb4 13.cd7; 7.g3 0-0 8.Bg2 a5 9.a3 b6 10.d4 Qb8 11.c6 Nc5 12.bc5 bc5 13.Bc1) 7...Bf3 8.gf3 0-0 9.d4 a5 10.a3 c6 11.Bg2 ab4 12.ab4 Ra1 13.Qa1.

6.d4 a5 7.a3 Be7 8.e3 0-0 9.h3 Bh5 10.Nc3 Ne4 11.Be2 Ndf6 12.0-0 Nc3 13.Bc3 Ne4 14.Qc2 b6 15.Bb2 Bf6 16.Rfc1 bc5 17.bc5 Bh4 18.Nh4 Be2 19.Qe2 Qh4 20.Rab1 Qg5 21.Bc3 Nc3 22.Rc3 e5 23.Rb7 c6 24.Qg4 Qg4 25.hg4 ed4 26.ed4 Rfe8 27.Re3 Kf8 28.Rf3 Re7 29.Re7 Ke7 30.Rb3 Ra7 31.f3 f6 32.Kf2 Kd7 33.Rb8 Ke6 34.Ke3 a4 35.Rb6 Kd7 36.Kf4 Kc7 37.Kf5 Kd7 (37...Ra8!?+/-) 38.g5 fg5 39.Rb8 Rc7 40.Rg8 g6 41.Kf6 Rb7 42.Rg7 (42.Rg7 Kc8 43.Rb7 Kb7 44.Kg5+-; 42.Kg5?! Rb2 43.Rg7 Kc8+/-) 1-0. marekt (2305) - extremo (2120), gameknot.com, 2021.

6.d4 Rb8 A) 7.a3 Be7 (7...c6 8.Nbd2 b6 9.e3 bc5 10.dc5 a5 11.Bc3 e5; 7...a5 8.Ne5 Ne5 9.de5 Nd7 10.Qd4 Bf5 11.Nd2 f6) 8.e3 c6 9.Bd3 b6 10.Qc2 Bf3 11.gf3 bc5; B) 7.Nbd2 Be7 (7...c6 8.Qa4 Qc8 9.e3 Be7 10.a3 0-0 11.Bd3 Qc7) 8.e3 c6 9.Qa4 Qc8 10.Bd3 b6 11.Rb1 a5.

6.d4 Ne4 7.Nc3= (7.Nbd2 Nd2 8.Qd2 Be7 9.e3 Bf3 10.gf3 Bf8 11.Rc1 Qf6; 7.Qa4 Be7 (7...Bf5 8.e3 Be7 9.Be2 0-0 10.0-0 a5 11.b5 Bf6) 8.Ne5 Bf5 9.g4 Bg6 10.h4 h6 11.Ng6 fg6) 7...f5 (7...Be7 8.Ne4 de4 9.Nd2= Bf5 10.e3 0-0 11.Bc4 Nf6; 7...Nc3 8.Bc3 Be7 9.e3 0-0 10.Bd3 a5 11.Qc2 ab4) 8.Qc2 (8.Qa4 a5= (8...c6 9.b5 Qc7 10.bc6 Qc6 11.e3 Nc3) 9.ba5 c6 10.h3 Bh5 11.Qb4 Qa5) 8...Be7 9.e3 0-0 (9...Nc3 10.Bc3 (10.Qc3 Bf3 11.gf3 0-0) 10...0-0 (10...Bf3 11.gf3 0-0) 11.Be2= Qe8; 9...a5 10.b5 0-0 11.Be2 Bf3) 10.Be2 c6 (10...Ndf6 11.0-0= Qe8; 10...a6 11.0-0 Qe8) 11.0-0 Qc7 (11...Bf6=) 12.h3 (12.a4 Bf6=) 12...Bf3 13.Bf3 e5 14.b5 Ng5 (14...Bf6 15.Rad1=) 15.Bd5 cd5 16.Nd5 Qd8 17.Rac1 (17.c6 bc6 18.bc6 Nb6 19.Nb6 ab6 20.de5 Qc7=) 17...e4+= 18.Qb3 Kh8 (better 18...Rf7!?=) 19.Ba3+- Re8 (19...Bf6 20.c6 bc6 A) 21.Bf8?! cd5 22.Bc5 Nb6=+ (worse 22...Nc5 23.Rc5 Be7 24.Rd5+=); B) 21.bc6+-) 20.Ne7 Re7 21.c6 Nf6 (21...Re8 22.cd7 Qd7 23.Rfd1+-) 22.Be7 Qe7 23.Rc5 g6 (23...Nf7 24.Rf5 bc6 25.bc6+-) 24.cb7 (24.Rfc1 bc6 25.bc6 Rc8+-) 24...Qb7+- 25.Rfc1 Ne8 26.h4 (26.Qd5 Qd5 27.Rd5 Ne6+-) 26...Nf7+- 27.Rc7! (27.Rc7 Nc7 28.Qf7+-) 1–0. Hoch,Hubertus (2320) – HM (2175), BdF, 2007.

6.d4 Be7 7.e3 b6 8.a3 0-0 9.Be2 bc5 10.dc5 a5 11.0-0 Qb8.

6.d4 Bf3 7.ef3 Be7 (7...Nh5 8.Qd2 Be7 9.f4 c6 10.Bd3 Qc7 11.f5 Nf4; 7...c6 8.Bd3 Nh5 9.g3 Be7 10.0-0 Nhf6 11.Re1 0-0; 7...a6 8.Bd3 Nh5 9.g3 Qf6 10.Nd2 g6 11.Qa4 c6) 8.Bd3= 0-0 9.0-0 a5 10.b5 c6 11.b6 Qb8.

6.e3 a5 7.a3 ab4 8.ab4 Ra1 9.Ba1 c6 10.h3 Bf5 11.Nd4 Bg6.

6.e3 a5 7.a3 ab4 8.ab4 Ra1 9.Ba1 Be7 10.h3 Bf5 11.Nh4 Be4 12.d3 Bg6 13.Ng6.

6.e3 e5 7.Be2 (7.h3 Bf3 8.Qf3 e4 9.Qg3 c6 10.Be2 b6 11.cb6 Qb6) 7...e4 8.Nd4 Be2 9.Qe2 a5 10.c6 Ne5 11.cb7 Rb8.

6.e3 Be7 7.h3 (7.Nc3 0-0 8.Be2 a5 9.a3 e5 10.h3 Bf3 11.Bf3 e4 12.Be2 b6 13.c6; 7.a3 0-0 8.h3 Bf3 9.Qf3 c6 10.Nc3 Qc7 11.Be2 b6 12.cb6 ab6 13.d4; 7.d4 a5 8.ba5 0-0 9.Be2 Ra5 10.Nc3 Ne4 11.0-0 Bf5 12.Qb3 Ra7 13.h3) 7...Bf3 8.Qf3 a5 9.a3 0-0 10.Nc3 c6 11.Be2 Ne5 12.Qf4 Ng6 13.Qd4.

6.h3 A) 6...Bf5 7.Nc3 (7.g4 Bg6 8.Nc3 Be7 9.Bg2 0-0 10.d3 h6 11.0-0 a5 12.a3 c6 13.Nd4; 7.Nd4 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 Bg6 11.Nc3 c6 12.e3 Be7 13.Be2; 7.Nh4 a5 8.Nf5 ef5 9.a3 Be7 10.Nc3 0-0 11.e3 Ne5 12.Be2 Nc4 13.Bc4) 7...a5 8.a3 Be7 9.Nd4 0-0 10.Ncb5 Qc8 11.Nf5 ef5 12.e3 g6 13.g4; B) 6...Bh5 7.Nc3 (7.g4 Bg6 8.Nc3 Be7 9.Bg2 0-0 10.d3 h6 11.0-0 c6 12.Nd4 Qc7 13.a3; 7.d4 Be7 8.Nc3 0-0 9.e3 a5 10.b5 Ne4 11.Bd3 Ng5 12.g4 Bg6 13.Ng5; 7.Bf6 Qf6 8.Nc3 Bf3 9.gf3 a5 10.a3 c6 11.e3 Be7 12.Be2 0-0 13.f4; 7.a3 Be7 8.Nc3 0-0 9.e3 Ne5 10.g4 Nf3 11.Qf3 Bg6 12.Be2 b6 13.d4) 7...Be7 8.e3 a5 9.a3 0-0 10.Be2 b6 11.cb6 Nb6 12.Qb3 ab4 13.ab4; C) 6...Bf3 7.ef3 (7.gf3 a5 8.a3 Be7 9.Nc3 Ne5 10.Rg1 Nc4 11.Qc2 Nb2 12.Qb2 0-0 13.e3) 7...Be7 8.Bd3 a5 9.a3 d4 10.0-0 ab4 11.ab4 Ra1 12.Ba1 Ne5 13.Qe2.

6.a3 Ngf6 7.h3 Bf5 8.Nc3 c6 9.g3 Bd6 10.Bg2 0-0 11.d3 a5 12.b5 Ne5 13.Nd4 Bd7 14.e3 c5 15.Nde2 c4 16.Nf4 cd3 17.Ra2 Be6 18.0-0 Rc8 19.e4 d4 20.Ne6 (20.Ncd5 Bd5 21.ed5 Qb6 22.Nd3 Nc4=) 20...fe6 21.Na4 Rc2 22.f4 Nc4 23.Qd3 Rg2 24.Kg2 Ne3 25.Kg1 Nf1 26.Kf1 e5 27.Kg1 Nh5 28.Ra1 (28.f5 Qg5 29.g4 Nf4 30.Qb3 Kh8–+) 28...ef4–+ 29.Qd4 (29.Qc4 Kh8 30.Qd4–+) 29...Qg5= 30.Qd6?? (better is 30.g4 f3 31.Qd5 Qd5 32.ed5 f2 33.Kg2–+) 30...Qg3–+ 31.Kf1 Qf3 (32.Ke1 Qe4 33.Kd2 f3–+ (33...Qa4 34.Qd5 Kh8 35.Rf1=+); 31...Qh3 32.Ke2 f3 33.Kd2–+) 0–1. Von Sin – mrkt, internet, 2006.

6.Nc3 Ngf6 7.a3 Bd6 =+.

6.Nd4 Bb4 7.h3 +/–.

6.Nd4 Ngf6 7.Qb3 Be7 8.Nc3 c5 9.bc5 Nc5 10.Qc2 0-0 11.e3 Rc8 12.Be2 Ne6 13.Qa4 Be2 14.Nde2 Nc5 15.Qd4 Re8 16.0-0 Ne6 17.Qd3 (17.Qa7? Ra8 18.Qb7 Rb8–+) 17...a6 18.Rfc1 b5 19.Nd1 Rc4 20.f3 Qa5 21.Bc3 b4 22.Bb2 Qb5 23.Nf2 Nd7 24.Rab1 Rec8 25.Rd1 a5 26.a3 Rb8 27.Ra1 Ndc5 28.Qd5 Nb3 29.Qb5 Rb5 30.Ra2 (30...Rc2 31.ab4 Nd2 32.Nd3 Bb4 33.Nd4 Nd4 34.ed4=+). SkyNet – hooks, ChessWorld.net, 2006.

6.e3 Bb4 7.Bg7 Bd2 8.Qd2 Bf3 9.gf3 +-.

6.e3 c6 7.b5 Ngf6 8.Be2 c5 9.a4 Bd6 10.Nc3 0-0 11.a5 Qc7 12.h3 Bf5 (12...Bf3 13.Bf3 Ne5 14.0-0= (< 14.Nd5 Nd5 15.Bd5 Nd3 16.Ke2 Nb2–+)) 13.0-0 b6 (13...Rfe8 14.d3=) 14.a6 (14.Qa4 Rfb8=) 14...Rfe8 15.Ra4 c4 16.Nd4 Bg6 17.Ra2 Nc5 18.Bf3 Be4 19.Ne4 de4 (< 19...Nce4 20.Nc6+=) 20.Be2 Nd3 21.Nc6 Nd5 22.Bd3 cd3 (< 22...ed3 23.Ra4+/–) 23.Qb3 Qd7 24.Ra4 (24.Bg7 Kg7 25.f3 f5–+) 24...Qe6 25.Nd4 Qe5 26.f4 Qh5 27.Nc6 Nc7 28.Be5 Be5 29.fe5 (29.Ne5 Ne6 30.Qd5 Nc5=) 29...Qg6 (29...Ne6 30.Qc3 Nc5 31.Rc4=) 30.Rd4+= Qe6 (30...Re6 31.Rd7 Na6 32.Ne7 (32.ba6 Rc6 33.Qf7 Qf7 34.Rff7 g5+/–) 32...Re7 33.Re7+-) 31.Qa4 f5 32.ef6 gf6 33.Rf4 (33…f5 34.g4+/–) 1–0. Staberg,Karl_Arne – Froewall,Ronny, corr SM–l995, 1995.

6.h3 Be6 7.e3 Ngf6 (7...Bb4?? 8.Bg7 Ngf6 9.Bh8+-; 7...Bb4?? 8.Bg7 Ngf6 9.Bh8+-) 8.b5 Bd6 9.Be2 0-0 (9...Qe7 10.0-0=) 10.0-0= Re8 (10...c5 11.bc6 bc6 12.Qc2=) 11.Qc2 Rc8 (11...Qe7 12.Bd4=) 12.Nc3 c5 13.bc6 Rc6 14.a4 (14.Nd4 Rc8=) 14...a6 (14...Ne4 15.Bd3=) 15.a5 (15.Nd4 Rc7=) 15...Ne4 (15...Rc8 16.Rfc1=) 16.Nd4 (16.Rfc1 Ne5=) 16...Rc8 17.Qd1 (17.Ne6 fe6 18.Bf3 Nc3 19.Bc3 Bb4=+) 17...Ndf6 18.Ne4 Ne4 19.Ne6 fe6 (worse 19...Re6 20.Bg4+-; worse 19...Re6 20.Bg4+-) 20.Bf3 Ng5 21.Bh5 Rf8 (21...Re7 22.Qg4 Ne4 23.Rfc1 Rc1 24.Rc1=) 22.d3 Qe7 23.Ra4 (23.Qb3 Rc7=) 23...Nf7 24.e4 (24.Qb3 Ne5=) 24...de4 (24...Ne5 25.ed5 ed5 26.f4=) 25.Re4 Rc5 26.Bg4 The isolani on e6 becomes a target. Attacking the isolated pawn on e6 26...Ng5 27.Ra4 Rd5 (27...Qd7 28.f4 h5 29.Be2= (worse 29.fg5 Rf1 30.Qf1 hg4 31.Rg4 Ra5=+)) 28.Qe2 (28.f4 Nf7=) 28...e5 (28...Qd7 29.Rd4 Qf7 30.Rd5 ed5 31.Qe3+-) 29.Bc3 Qf7 (29...Rd8 30.Rc4=) 30.Rc4 h6 (30...Ne6 31.Rb1+=) 31.g3 (31.Qe3 Qg6 32.Be2 Rf4=) 31...g6 (31...Kh8 32.Kg2=) 32.Qe3 Kh7 (32...Rd8 33.f4 Rf8 34.Rf2 ef4 35.gf4+-) 33.h4 (33.Kg2 Rb5+=) 33...h5 (33...Ne6 34.Bd2 Kg8 35.Qh6+-) 34.hg5 (worse 34.Qg5 Rd3 35.Bh5 gh5 36.Be5 Be5 37.Qe5 Rg3 38.Qg3 Qc4–/+) 34...hg4 35.Rg4 Qf3 (35...Kg8 36.Rh4 Qf3 37.Qb6+=) 36.Qf3 (36.Rh4 Kg8 37.Qb6 Rf7+= (worse 37...Qd3 38.Qb7 Rf7 39.Qc8 Bf8 40.Qe6+-)) 36...Rf3 37.Rb1 Kg8 (37...Rf7 38.Rh4 Kg7 39.d4+-) 38.Rb7 Bc5 Attacks the backward pawn on f2. Exerts pressure on the backward pawn (38...Rdd3 39.Be1+-) 39.Rc4 (39.Be5!? Re5 40.d4 Bd4 41.Rd4 Rg5 42.Rd8 Rf8 43.Rdd7+-) 39...Rg3+= 40.Kf1 Rg5 (40...Rgd3!? 41.Rc7 Bd4+-) 41.Rc7+- Bd4 42.Bd4 ed4 (42...Rd4 43.R4c6 Rd3 44.Ra6+-) 43.Ra7+- Rgf5 44.Rc8 Rf8 45.Rcc7 Rf6 46.Ra8 Rf8 47.Ra6 Rdf5 48.Rg6 Kh8 49.a6 Rf2 50.Kg1 Rf1 (50...Rd2 51.a7 Rd3 52.Ra6 Rd1 53.Kg2 Rd2 54.Kh3+-) 51.Kh2 R8f2 (51...R1f7 52.Rf7 Rf7 53.Rb6 Rf2 54.Kg3+-) 52.Rg2 Rf6 53.Rb2 Rh6 54.Kg2 Rf8 55.a7 Rg6 56.Kh1 Ra6 (56...Rf1 57.Kh2 Rh6 58.Kg2 Rf8+-) 57.Rb8 Ra1 (57...Rg8 58.Rg8 Kg8 59.Rc8 Kf7 60.a8R Ra8 61.Ra8+-) 58.Kg2 Ra2 59.Kg3 Kg8 60.Rf8 (better 60.Rd7 Ra4+-) 60...Kf8 61.Rc8 Ke7 62.a8Q Ra8 63.Ra8 Kd6 (63...Ke6 64.Kf4+-) 64.Kf4 Kd5 65.Ra5 (65.Ra5 Kc6 66.Ke4 Kb6 67.Rh5 Kc7 68.Kd4 Kd6 69.Rh6 Ke7 70.Ke5 Kd7 71.d4 Kc7 72.Rh7 Kb6 73.d5 Kb5 74.Rb7 Kc4 75.d6 Kc5 76.Rc7 Kb6 77.Rc8 Ka6 78.d7 Kb6 79.d8Q Kb5 80.Rb8 Ka4 81.Qd7 Ka5 82.Qb5; 65.Ra5 Kd6 66.Ke4 Kc6 67.Kd4 Kb6 68.Ra2 Kc6 69.Ke5 Kc5 70.d4 Kc4 71.d5 Kd3 72.d6 Kc3 73.d7 Kc4 74.d8Q Kb3 75.Qd2 Kc4 76.Rb2 Kc5 77.Qd5) 1–0. Degterev,Pavel (1685) – Stoyanov,Zlatin (2185), IECG, 2005.

6.h3 Bf3 7.ef3 Ngf6 =+ (7...Bb4 8.Bg7 Qe7 9.Qe2+-).

6.h3 Bf3 7.gf3 Ngf6 (7...Bb4?? 8.Bg7 Qh4 9.Bh8+-) 8.Rg1 c6 9.Na3 g6 10.Qb3 Bd6 11.h4 0-0 12.0-0-0 (12.Nc2 Re8+=) 12...a5 13.b5 a4 14.Qe3 Re8 15.Qh6 Rc8 16.Kb1 cb5 (16...Ba3 17.Ba3 cb5 18.Bb2–/+) 17.Rg5?? (17.Nb5 a3 18.Bd4–+) 17...Bf8–+ (17...Bf8 18.Rg6 fg6–+) 0–1. thecurator – marekt, ChessWorld.net, 2015.

6.h3 Bf5 7.e3 (7.Nc3 Ngf6 8.g4 Be6=) 7...Ngf6= 8.a3 Be7 (8...a5 9.Qb3=) 9.Be2 0-0 10.0-0 a5 11.b5 Nc5 12.Nc3 Nd3 (12...h6 13.Nd4 Bg6 14.f4=) 13.Bd3 (better is 13.Qc2 Nb2 14.Qf5+/–) 13...Bd3+= 14.Re1 Ne4 (14...Bd6 15.Qb3 a4 16.Na4=) 15.Qb3 Bc4 (15...a4 16.Qd5 Nc3 17.Qd8 Ne2 18.Re2 Rfd8 19.Ree1+=) 16.Qc2= Nc5 17.d4 Bb3 18.Qd2 (18.Qf5 g6 19.Qb1 Na4=) 18...Na4 19.Rac1 (19.e4 de4 20.Ne4 Bd5+=) 19...Qd6 (worse is 19...Nb2 20.Qb2 a4 21.Nd2+=) 20.Rb1 f6 21.e4 Nc3 (21...de4 22.Ne4 Qd5 23.Re3+=) 22.Qc3= Bc4 23.Bc1 Qd7 24.Bf4 White prepares the advance e5 24...Rfc8 (24...Rfe8 25.Re3=) 25.e5 Bb5 (25...Qf5 26.ef6 Bf6 27.Be5+=) 26.ef6+= Bf6 27.Ne5 Be5 28.Be5 (28.de5!? Bc6 29.e6+=) 28...c6= 29.Qg3 (29.Re3 Rf8=) 29...Re8 30.h4 (30.Rb3 Re6+=) 30...Re6+= 31.h5 Rf8 (31...Rh6 32.Qh4 Qf7 33.g4+=) 32.Re3 Rf5 33.Qg4 Rf7 34.Rbe1 Ree7 (34...b6 35.Qg3 c5 36.dc5 bc5 37.Bg7 Re3 38.Re3 Rg7 39.Qb8 Kf7 40.Qf4 Kg8 41.Qb8 Kf7 42.Qf4 Kg8 43.Qb8=) 35.Qg3= Qf5 (35...h6!?=) 36.h6+= g6? (better is 36...Qg6 37.Qh4 Qh6 38.Qh6 gh6 39.Rg3 Rg7 40.Rg7 Rg7 41.Bg7 Kg7 42.Re7 Kg8 43.Rb7 a4+-) 37.Bg7+- Re3 (37...Re4+-) 38.Qe3 (38.Re3 Qc8 39.Re6 Rg7+-) 38...c5 39.dc5 Qf4? (better is 39...Qe4 40.Qc3 Qh4+/–) 40.Qe8+- Be8 41.Re8 Rf8 42.Rf8 Qf8 43.Bf8 Kf8 44.f4 Ke7 45.Kf2 1–0. yulio (2015) – terrier (2110), gameknot.com, 2015.

8.Be2 a5 9.b5 =+. Reg_UK – hooks, ChessWorld.net, 2006.

8.Be2 Bf3 9.Bf3 a5 10.Nc3 ab4 11.Nd5 ba3 12.Nf6 gf6 13.Bd4 =+ (< 13.Bb7 Rb8 14.Ba3 Rb7–/+).

9.0-0 c6 10.h3 Bh5 11.Nc3 Re8 (11...Bf3 12.Bf3 Ne5 13.d3=) 12.d4 (12.Qc2 h6+=) 12...Rc8 (12...Nb6 13.Nd2 Be2 14.Qe2+=) 13.Rc1 (13.g4 Bg6+=) 13...b5 (13...Nb6 14.Nd2 Be2 15.Qe2+=) 14.Nh4 (14.a4!? a5 15.ab5 ab4 16.bc6 bc3 17.cd7 Qd7 18.Rc3 Rc3 19.Bc3=) 14...Be2+= 15.Qe2 Nb6 (15...g6 16.Nf3+=) 16.Nf5–/+ Bb8 17.Rc2 a5 (17...Nc4 18.Qf3–/+) 18.ba5 (18.g4 ab4 19.ab4 g6 20.Nh6 Kg7–+) 18...Nc4 19.a6 Qa5 –+. Gerold,Guenter – Kettenburg,Stefan, corr, 2001.

9.0-0 Re8 =.

9.Nc3 a5 +=.

9.d3 a5 10.b5=+.

9.d3 Re8 10.0-0=+ Bf3 (10...a5 11.b5=+) 11.Bf3= c6 12.Qc2 (12.d4 Ne4=+) 12...a5 13.b5 (13.Nd2 Qc7 14.g3 ab4 15.ab4 Bb4=+) 13...cb5 (13...Rc8 14.bc6 Rc6 15.Nc3=+) 14.Nc3 Rc8 (14...Qc7 15.Qb1 b4 16.Nd5 Nd5 17.Bd5 Bh2 18.Kh1–/+) 15.Qb3 Increasing the pressure on the isolated pawn on d5 15...Ne5 16.Nb5 Nf3 17.gf3 Be5 18.Be5 Re5 19.Kh1 (19.Nd4 Qd7 20.Kh1 Rh5=) 19...Nd7 (19...Rh5 20.Qb2=+) 20.Qb2 Re6 (20...Rh5 21.Rg1 g6 22.f4=) 21.f4 (21.Rg1 g6=+) 21...Nc5 22.Rg1 Rg6 (22...g6 23.Qc2=+) 23.d4 Na4 24.Qb3 (24.Qe2 Rc4 25.Rg6 hg6=+) 24...Nb6 25.Rg6 hg6 26.Nc3 (26.Rg1 Qe7 27.Qd3 Qd7=+) 26...Rc6 (26...Qh4 A) 27.Qb6? A1) 27...Rc3?! 28.Kg1= (28.Qa5 Rc2 29.Qe1 g5–+); A2) 27...Qf2 28.Qa5 Qf3 29.Kg1 Qe3 30.Kh1 Qf3 (30...Rc3?! 31.Qd8 Kh7 32.Qh4 Kg8 33.Qd8 Kh7 34.Qh4 Kg8 35.Qd8=) 31.Kg1 Qg4 (worse 31...Rc3 32.Qd8 Kh7 33.Qh4 Qh5 34.Qh5 gh5 35.Rb1–/+) 32.Kh1 Qf4–+; B) 27.Qb2=+) 27.Rg1 Qe7 (27...Qc8 A) 28.Nd5? Qe6 29.Re1 Nd5–+ (29...Qd5?! 30.Qd5 Nd5 31.Rb1–+); B) 28.Nb5 Rc2 29.Nd6=+) 28.h3 (28.Rg5 a4 29.Qb2 Rc4=+) 28...Qe6 (28...Nc4 29.Rg3=+) 29.Kh2=+ Nc4 30.Qb7 (30.Nb5 Nd2 31.Qd1 Ne4–/+) 30...Ne3 31.Qa8 Qc8 (31...Kh7 32.Qa5 Nf5 33.Rf1–/+) 32.Qc8 Rc8 33.fe3 Rc3 34.Rg5 Re3 35.Rd5 Ra3 36.Rd8 Kh7 37.Ra8 (37.Kg2 Rd3=+) 37...f6 (37...Rf3 38.Ra5 Rf4 39.Ra7=+) 38.d5= a4 39.Kg2 (39.h4 Rd3=) 39...Rd3 40.Ra4 (40.d6 a3=) 40...Rd5 41.Ra8 (41.h4 Rd2 42.Kf3 Rd3 43.Kg2 Kg8=+) 41...g5=+ 42.fg5 (42.Ra4 Kh6=+) 42...Rg5 43.Kf3 Rb5 44.Rf8 (44.Rd8 Rb4=+) 44...Kg6 45.h4 Kf5 46.h5 (46.Ra8 Rb3 47.Kg2 Kg4 48.Ra4 Kh5=+) 46...Rb3 (46...Kg5 47.Rh8=+) 47.Kg2 (47.Ke2 Kg5 48.Rh8 Rb7–/+) 47...Rb7 (47...Kg5 48.Rh8=+) 48.Kf3 Kg5 49.Rh8 Rb3 (49...f5 50.Rf8=+) 50.Kf2 f5 51.Rh7 (51.Rf8 Rb7 52.Kf3 Ra7–/+) 51...Rb7 52.Kg3 (52.Kg2 Kg4 53.h6 Rb2 54.Kf1 Kf3–/+) 52...f4 53.Kf3 (53.Kg2 Kg4 54.Kf2 Ra7–+) 53...Kf5–/+ 54.Rh8 Rb3 55.Kf2? (55.Ke2 Re3 56.Kf2 Re7=+) 55...Kg4–/+ 56.Rg8 (56.Rh7 Rb7 57.Ke1–+) 56...Rb2–+ 57.Ke1 Rh2 (57...Rb7 58.h6 g5–+) 58.Rg7= Kf3 59.Rh7 Rh1 60.Kd2 Kf2 61.h6 f3 62.Kd3 (62.Kc2 Kf1=) 62...Rh4 (62...Rd1 63.Kc4=) 63.Kc3 Rh3 64.Kd4 Rh2 65.Kc4 Rh5 66.Kd3 Rh1 67.Kc4 Kf1 68.Rf7 f2 69.h7 Kg2 70.Rg7 Kf3 71.Rf7 Ke2 72.Re7 Kd2 73.Rd7 Ke1 74.Re7 Kd1 75.Rd7 ½–½. bambinik (2490) – jcocker,Fritz 8 (2340), 2003.

9.Nd4 Be2 10.Qe2 a5 11.b5 +=.

9.Nd4 Be2 10.Qe2 a5 11.Nf5 Ne5 12.ba5 Qd7 13.Nd6 Qd6 (< 13...cd6 14.f4 Neg4 15.h3+-) 14.Qb5 c6 15.Qe2 (15.Qb7?? Nd3 16.Kf1 Rfb8 (16...Ra5?! 17.Bc3 Rb5 18.Qa6–/+; 16...Nb2?! 17.Qb2 Rfb8 18.Qc2=) 17.Qb8 Rb8–+ (< 17...Qb8 18.Bf6 gf6 19.Nc3–+)) 15...Nc4 16.Bc3 Ne4 17.Bb4 c5 18.Bc3 Na5 (18...Nc3 19.Nc3 Ra5 20.e4=+) 19.d3=+ Nc3 20.Nc3 Qe5 21.Qb2 d4 22.Ne2 Rfe8 23.e4 c4 24.f4 Qe7 25.0-0 Nb3 26.Ra2 cd3 27.Qb3 (27.Ng3 Qe6–/+) 27...de2 28.Re2 Ra3 29.Qb5 d3 30.Re3 Rd8 31.Rd1 Qd6 32.Qb2 Qc5 (32...Qf4 33.Rg3 Qg3 34.hg3+/–) 33.Qd2 (33.Qf2 Rc3–+) 33...Ra2! 34.Qa2 Qe3 35.Qf2 Qe4 36.Qd2 Qd4 37.Kf1 b5 38.g3 (38.Qf2 b4–+) 38...b4 39.Re1 Qd5 40.Kf2 Qc5 41.Kf1 Qc2 42.Qe3 h6 43.Qe4 b3 (44.g4 d2 45.Qe8 Re8 46.Re8 Kh7–+) 0–1. Pierred (2185) – Margoton (2295), Rated game, 5m + 0s, 2005.

9.Nd4 Be2 10.Qe2 c6 11.Nf5 Be5 (11...Qc7 12.Nc3=+) 12.Be5 Ne5 13.0-0 a5 (13...Re8 14.Nc3=+) 14.d4 (14.Nc3 Re8=+) 14...Nc4 15.Nc3 (15.Nd2 g6 16.Ng3 b5=+) 15...Qd7 (15...g6 16.Ng3–/+) 16.Qd3=+ Qe6 (16...b5 17.Ng3=+) 17.Rfb1 ab4 (17...g6 18.Ng3=+) 18.ab4 Ne4 (18...b5 19.Ng3=) 19.Ne4 de4 20.Qc3 Nb6 (20...Rfe8 21.Ng3 b5 22.Nh5=) 21.Ng3 Nd5 22.Qb2 f5 (22...b5 23.Ra5=) 23.Ra8 Ra8 24.Ra1 (24.b5 Qd7=) 24...Ra1=+ 25.Qa1 Qc8 26.Qa2 Qd7 27.Qa8 (27.h4 Kf7=+) 27...Kf7 28.h4 (28.Qh8 Nf6=+ (worse 28...Nb4 29.Qh7 f4 30.Ne4+-)) 28...g6 (28...Nb4 29.Nf5 g6 30.Nh6 Kg7 31.g4+-) 29.Qh8 Nf6 30.Qa8 Kg7 31.Qa7 (31.Qa5 Nd5–/+) 31...Nd5 32.Qc5 (32.Qa5 b6 33.Qa1 Qe7–/+ (worse 33...Nb4 34.d5 Kg8 35.Qa8 Kg7 36.Qa1 Kg8 37.Qa8 Kg7 38.Qa1=)) 32...b6 (32...Qe7 33.Qe7 Ne7 34.f3 ef3 35.gf3–/+) 33.Qc4 Qd6 34.b5 cb5 35.Qb5 Ne3! 36.Ne4 (36.fe3 Qg3 Double attack (36...Qg3 Deflection; 36...Qg3 Decoy; 36...Qg3 Overloading)) 36...Qd4 (worse 36...fe4 37.fe3 Qg3 38.Kf1=) 37.fe3 Qe4 38.Qb6 Qh4 39.Qc7 Kh6 (39...Kf8 40.Qc8 Kf7 41.Qh8–/+) 40.Kf1 Kg5 41.Qe7 Kg4 42.Qb7?? (better 42.Qd6–/+) 42...Kg3–+ 43.Qf3 (43.Qc7 f4 44.Ke2 Qg4 45.Ke1 Kg2 46.ef4 h5–+) 43...Kh2 44.Qc6 (44.Qd5 Qe4 45.Qd6 Kh1–+) 44...Qg3 45.Qc2 f4 46.e4 (46.ef4 Qf4 47.Ke2 Kg2 48.Ke1 Kg1 49.Qc5 Kh2 50.Qc2 Kh3–+) 46...Qe3 47.g4 Kh3 48.g5 (48.Qg2 Kh4 49.g5–+) 48...f3 49.e5 (49.Qc8 Kh4 50.Qc2 Kg5 51.Qd1–+) 49...Kg3 50.e6 f2 51.Qd1 Qa3 (51...Qa3 52.Ke2 Qf3 53.Kd2 Qd1 54.Kd1 f1Q 55.Kd2 Qg2 56.Ke3 Qd5–+) 0–1. Pierred (2190) – Hbcc_dfg (2455), Rated game, 3m + 0s, 2005.

9.Nd4 Ne5 10.d3 (10.f3 Bd7+=) 10...a5–/+ 11.0-0 ab4 12.ab4 Ra1 13.Ba1 Bb4 (13...Be2 14.Qe2 Bb4 15.f4–/+) 14.Bg4+= Neg4 15.h3 Ne5 16.Nf5 Re8 (16...Nc6 17.Qf3+=) 17.Qb3+= Bf8 18.Qb7 Nd3 19.Bf6 Qf6 20.Qd5 Rd8 21.Qe4 c5 22.Nd2 Ne5 23.Nf3 Nf3 24.Qf3 g6 25.Nd4 Kg7 (25...Qa6 26.Qc6 Qc6 27.Nc6+=) 26.Qf6 Kf6 27.Nf3 Be7 (27...Ra8 28.Rb1+=) 28.Ra1 Ke6 29.Kf1 f5 (29...Rd7 30.Ke2=) 30.Ke2 (30.Ra7 Rd7 31.Rd7 Kd7=) 30...Bf6 (30...Rd7 31.g4=) 31.Ra6= Rd6 32.Rd6 (32.Ra7 h6=) 32...Kd6 33.Kd3 ½–½. Raffaele,Enzo – Negri,Jacopo, Asigc, 2000.

9.Nd4 Ne5 10.d3 a5 11.0-0 ab4–/+ 12.ab4 Ra1 13.Ba1 Bd7 14.b5 (14.f4 Nc6 15.Nc6 Bc6=+) 14...Qe7 15.Nd2 (15.f4 Neg4 16.e4 Ne3–+ (16...de4?! 17.Qc1–+)) 15...c5 16.bc6 bc6 (< 16...Bc6 17.Nf5 Qe6 18.Nd6 Qd6 19.Bd4+=) 17.N4f3 Neg4 (17...Nf3 18.Nf3 Rb8 19.Bd4=+) 18.h3= Nh6 19.Re1 (19.Qc2 Rb8=) 19...c5 (19...Rb8 20.Bd4=+) 20.e4 (20.Qb3 Be6=) 20...de4 (20...d4 21.Nc4 Rb8 22.e5+-) 21.de4 Bc7 22.Qc2+= Ba5 23.Rc1 Bb4= 24.Bd3 Nh5 25.e5+/– Nf4 26.Bh7 Kh8 27.Bd3 Rd8 28.Bc4+/– Bf5 29.Ne4 Qb7 30.Nfg5 Qc6 31.Rd1?? Ba5?? 32.f3 Qg6 33.h4 Rd1 34.Qd1 Be4 35.fe4 Ne6? 36.Be6?? fe6 37.Qd7 Be1 38.Qc8 Ng8 39.Qe6 Qe6 40.Ne6 c4 41.h5 Kh7 42.Kf1 Bb4 43.Ke2 Ne7 44.Nd4 Kh6 45.Nc2 Bc5 46.e6 Kh5 47.Bg7 Kg4 48.Be5 Nc6 49.Ne3?? Kg5?? 50.Nc4+- Nd8 51.Bd6 Bd6 52.Nd6 Ne6 53.Ke3 Kg4 54.Nf5 Nf4 55.Kd4 Ng6 56.g3 Kg5 57.Ne3 Kf6 58.Kd5 Ne5 59.Nc4 Nf7 60.e5 Ke7 61.Ne3 Ng5 62.Nf5 Kd7 63.Nd4 Ke7 64.g4 Kf7 65.Ne2 Ke7 66.Nf4 Kf7 67.Kd4 Ke7 68.Nd3 Kf7 69.Nc5 Ke7 70.Ke3 Kf7 71.Kf4 Kg6 72.e6 Nh7 73.Ne4 Nf6 74.Nf6 Kf6 75.e7 (75...Kf7 76.e8Q Ke8 77.Kg5+-) 1–0. Muse,Mladen (2455) – Zeller,Frank (2350), Bundesliga, 1994.

9.Nd4 Ne5 10.d3 a5 11.b5 Be2 12.Qe2 c5 13.bc6 bc6 +=.

9.Nd4 Ne5 10.f3 Be6 =+.

6.a3 c6 7.d4 Bd6 8.Nc3 0-0 9.c5 Bc7 10.Be2 a6 (10...Re8 11.0-0=) 11.0-0 b5 12.a4 (12.cb6 Nb6 13.Qc2 Qd6=) 12...Qb8 (12...a5 13.ab5 ab4 14.Na2 cb5 15.Nb4 Bf3 16.Bf3 Ra1 17.Qa1+=) 13.ab5 ab5 14.Ra8 Qa8 15.h3 Bf3 16.Bf3 Qb8 17.Qc2 h6 (17...e5 18.Rd1=) 18.Ra1 Nh7 (18...e5 19.Be2=) 19.e4+= Ng5 20.Be2 Nf6 (20...Qb7 21.e5+=) 21.e5+/– Nfe4 22.Ne4 Ne4 23.Bd3 f5 24.ef6 Nf6 25.Re1 Re8 26.Qe2 Re7 27.Bg6 Nh7 28.Bc2 Nf8 29.Bd3 Rf7 30.Ra1 (30.Bc3 Qd8+=) 30...Re7+= 31.Kh1 Nd7 32.Ra6 (32.Bf5 Nf8+=) 32...Qb7 ½–½. woschkat (1990) – sinjoor (1920), net–chess.com, 2001.

6.a3 c6 7.d4 Bd6 8.Nbd2 0-0 9.Bd3 Re8 10.Qc2 e5 11.Ne5 Ne5 12.de5 Be5 13.Be5 Re5 14.h3 Bh5 15.c5 Qd7 16.0-0 Rae8 17.Rfe1 R5e7 18.Nb3 Bg6 19.Bg6 hg6 20.Nd4 Ne4 21.Rab1 White plans b5 21...Qc7 22.Red1 a6 23.a4 White prepares b5 23...Re5 24.Rbc1 Rg5 25.b5 ab5 26.ab5 cb5 27.Rb1 Rc8 28.Rb5 (worse is 28.Nb5 Qe7+=) 28...Qd7 29.g4 Re5 30.Rdb1 Qe8 31.Rb7 Nc5 32.Rc1 Re4 (worse is 32...Nb7 33.Qc8 Nd6 34.Qe8 Ne8 35.Rc5+/–) 33.Ra7 Re3? (33...Qd8!?+/–) 34.fe3+- Qe3 35.Kg2 Qd4 36.Re7?? (36.Ra3 Rb8 37.Rd1+=) 36...Rb8 37.Rd1 Qf6 38.Rb1 Rb1 39.Re8 Kh7 40.Qb1 Ne4 41.Re4 de4 42.Qe4 Qe6 43.Qd3 Qe5 44.h4 Qf4 45.Qe2 g5 46.h5 f5 47.gf5 Qf5 48.Qe8 Qd3 49.Qe6 g4 50.Qg4 Kh6 51.Kh2 Qd2 52.Kh3 Qe3 53.Kh4 Qe1 54.Kh3 Qh1 55.Kg3 Qh5 56.Qh4 Kg6 57.Qe4 Qf5 ½–½. Thau,Oliver – Kahl,Fred, DESC SZ015 email, 2001. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.c4 e6 5.e3 Ngf6)

6.a3 c6 7.h3 Bh5 8.d4 Ne4 9.Nbd2 Nd2 (9...Bd6 10.c5 Bc7 11.Be2=) 10.Qd2 Bd6 11.Ne5 0-0 12.Bd3 Nb6 (12...Be5 13.de5 Bg6 14.Bg6 fg6 15.cd5 ed5 16.Bd4=) 13.c5+= Be5 14.de5 Nd7 15.e4 Re8 16.ed5 (16.f4 Bg6 17.ed5 Bd3 18.dc6 Nc5 19.bc5 bc6=) 16...ed5= 17.f4 f6 18.Qc2 fe5 (18...h6 19.Bh7 Kh8 20.g4 fe5 21.gh5 Qh4 22.Kd1 Qh5 23.Kd2 ef4 24.Rae1=) 19.Bh7+= Kh8 20.0-0 e4 1–0. Taulien,Hans_Juergen (2225) – Mettler,Horst (2250), remoteschach.de, 2004.

6.a3 c6 7.h3 Bh5 8.Be2 Bd6 9.d3 Qe7 10.c5 Bc7 11.0-0 b6 (11...e5 12.Nbd2=) 12.cb6 ab6 13.Nd4 Be2 14.Ne2 (14.Qe2 0-0=) 14...0-0+= 15.Nbc3 Qd6 16.Ng3 g6 17.Nce2 c5 18.b5 h5 19.Bf6 Nf6 20.f4 h4 21.Nh1 e5 22.Qe1 ef4 23.Qh4 (better is 23.ef4!? Rfe8 24.Ra2+=) 23...fe3–+ 24.Nhg3 Nh5 25.Nh5?? (25.Rf3 Ng3 26.Ng3–+) 25...Qh2 0–1. Szkodnikow_i_ofiar – marekt, ChessWorld.net, 2015.

6.a3 Be7 7.Be2 0-0 (7...dc4 8.Bc4 0-0 9.0-0=+) 8.h3 Bh5 9.d4 c6 10.Nbd2 Re8 11.Qb3 Bd6 12.b5 e5 13.de5 Ne5 14.Nd4 (14.cd5!? Nf3 15.Nf3 Nd5 16.0-0=) 14...Be2-/+ 15.Ke2 c5 16.Nf5 d4 17.Rhd1 Bc7 (17...Qd7!? 18.Nd6 Qd6=+) 18.Kf1= (worse 18.ed4 Nc4 19.Kf1 Nb2 20.Qb2 Qd7-/+) 18...Qc8 19.f4?? (better 19.g4!? h5 20.ed4 cd4 21.Bd4 hg4 22.hg4 Neg4 23.Qd3=+) 19...Ng6 (19...Qf5 20.Kg1 Ng6 21.ed4 Re2 22.dc5 Nf4-+) 20.Qd3-/+ Qe6 (20...de3 21.Ne3 Nf4 22.Qb3-+) 21.Re1 Ba5 (21...de3 22.Re3 Nf4 23.Qc2=+) 22.Rad1?? (better 22.ed4 Qd7 23.Re8 Re8 24.Nb3=) 22…Bd2-+ (22...Bd2 23.Rd2 Ne4 24.Nd4 cd4-+) 0-1. Bennett,Hilton - Green,Peter, NZL Latvian Gambit Open, 2001.

6.b5 dc4 7.Bc4 Bd6 8.0-0 =+.

6.b5 Bd6 7.Nc3 0-0 (7...dc4 8.Bc4 Bf3 9.Qf3=) 8.cd5 ed5 9.Be2 c5 (9...Nb6 10.d3=+) 10.bc6 bc6 11.h3 (11.Rb1 Bf3 12.Bf3 Qc7=) 11...Bh5 (11...Bf3 12.Bf3 Qe7 13.d4=) 12.Nd4 (12.0-0 Re8=) 12...Be2=+ 13.Qe2 c5 14.Nf5 Be5 15.0-0 Rb8 (better is 15...Re8!?=+) 16.d4+= Bc7 17.dc5 Be5 (17...Nc5 18.Nb5 Qd7 19.Bf6 Qf5 20.Bg7 Kg7 21.Nc7+/–) 18.Nd4 (18.c6 g6 19.Nb5 Rb6+-) 18...Qa5 (18...Bd4 19.ed4 Qc7 20.Bc1+/–) 19.f4 (19.Nb3 Qb4 20.Rfc1 Rfc8+/–) 19...Bd4+= 20.ed4 Qb4 21.Nd1 Rfe8 22.Qd3 Ne4+= 23.Bc3 Qa3 24.Rf3 Ndf6 25.Rb1?? Qa2?? 26.Ra1+= Qc4 27.Ra7+/– Qd3 28.Rd3 Rb1 29.Ba5 Nh5 30.Bc7 Neg3? 31.Kf2 f6 32.f5+- Ne4 33.Kg1 Re7 34.g4 Rc7= 35.Ra8 Kf7 36.gh5 Nc3 37.Rc3 Rd1 38.Kg2 Rd4 39.Kf3 Rh4–/+ 40.Ke2 Rh5 41.Rf3 Rh4 42.Kd3 Rb4 43.Rf2 Rc4–+ 44.Re2 Rf4 45.Rae8 Rf5–+ 46.Kd4 Rf4 47.Kd5 Rf5 48.Kd6 Rcc5 49.R2e7 Kg6 50.Rb7 Rb5 51.Rc7 Rfe5 52.Rc4 h5 53.h4?? Rbd5 54.Kc6 Ra5 55.Rb8 Re6 56.Kd7 Kf7 57.Rf8 Kf8 58.Ke6 Re5 (59.Kd6 Kf7–+) 0–1. Kostrun,Slaven (2245) – Bogut,Zeljko (2415), Sibenik CRO Team Ch (m), 2005.

6.b5 Bd6 7.d4 c5 8.dc5 Nc5 9.Nbd2 (9.cd5 Nce4 10.Qa4 ed5+=) 9...e5 (9...0-0 10.Be2+=) 10.Qc2 e4 11.Nd4 (11.Ne5 Be6+=) 11...0-0 12.Rc1 Rc8 13.N4b3 (13.h3 Bh5+=) 13...Na4 (13...Re8 14.Bd4+=) 14.Bd4 Ba3 15.h3 (15.Rb1 Nb6+=) 15...Be6 (worse is 15...Bc1 16.Nc1 Be6 17.Qa4 dc4 18.Ne2+/– (worse is 18.Bc4 Bc4 19.Nc4 Qd5–/+; worse is 18.Nc4 Bc4 19.Bc4 Qc7+=)) 16.Rd1 dc4 17.Nc4 (17.Bc4 Bd5 18.Na1 Qa5+=) 17...Bb4–/+ 18.Nbd2 Nb6 19.Bb6 Qb6 20.a3 Ba5 21.Qa4–/+ Bc4 22.Bc4 Qc7 23.0-0 Bd2 24.Bf7 Qf7 25.Rd2 b6 0–1. Zylla,Johannes (2265) – Vegjeleki,Adolf (2145), corr WSTT/3/06/Semifinal, 2008.

6.b5 Bd6 7.d4 c6 (7...0-0 8.c5 Be7 9.Bd3=) 8.Be2 (8.c5 Bc7=+) 8...cb5 9.cb5 (9.c5 Bf3 10.gf3 Bc7=+) 9...Bb4 (9...0-0 10.0-0=+) 10.Nbd2 (10.Bc3 Bf3 11.Bb4 Be2 12.Qe2 Rc8=) 10...Bf3=+ 11.gf3 0-0 (11...Rc8 12.Rg1 g6 13.a3=+) 12.0-0 (12.a3 Bd6=+) 12...Ne8 13.a4 f5 14.f4= h6 15.Ba3 Ba3 16.Ra3 g5 17.fg5+= hg5 18.f4 g4 19.Rc3+= Kf7 20.Rf2 Ndf6 21.Qc2 Rh8 22.Rg2 Rh3 23.Rg3 Rh7 24.Bd3 Kf8 25.Nb3 Nd6 26.Nc5 Kf7 27.Rg2 Qa5 28.Nb3 Qb4 29.Rc7 Kg6 30.Qc3 Qc3=+ 31.Rc3 Nfe4 32.Rcc2 Rh3 33.Rge2 b6 34.Rc6 Kf6 35.Nd2 Nd2 36.Rd2 Nf7 37.Re2 Rah8 38.Rc7 g3 39.Ra7 gh2 40.Kh1 R8h4 41.a5=+ ba5 42.b6 Rh8 43.Ra5 Rg8 44.Ra1+= Nh6 45.b7 Ng4= 46.Rb1 Rb8 47.Ba6 Rg3 48.Rg2 Re3 49.Be2 Rc3 50.Bg4 fg4 51.Kh2 Kf5 52.Re2 Kf4 53.Re6?? Rh8–+ (54.Kg2 Rg3 55.Kf2 Rh2 56.Kf1 Rh1 57.Kf2 Rf3 58.Kg2 Rb1–+) 0–1. Labahn,Wolfgang (2225) – Ftacnik,Lubomir (2535), Wichern op 2nd, 1993.

6.b5 Bd6 7.cd5 ed5 8.Be2 0-0 =+.

5.cd5 Nd5 6.a3 e6 7.e3 c5 8.bc5 Nc5 9.Bb5 Nd7 10.0-0 Rc8 11.Nc3 Nc3 12.Bc3 a6 13.Be2 b5 14.a4 b4 15.Bd4 Qa5 16.Qb3 Nc5 17.Qc4 Rc7? 18.Be5+- Bf3 19.Bf3 Re7? 20.d4 Nd7 21.Bc7 Qg5 22.d5 ed5 23.Qc6 Re6 24.Qa8 Nb8 25.Qb8 Kd7 26.Qb7 Rd6 27.Bd6 Kd6 28.Rad1 h6 29.Bd5 Ke5 30.f4 (30...Qf4 31.ef4 Kf5 32.Qf7 Kg4 33.Be6 Kh4 34.g3#) 1–0. Grott,Peter – Appeldorn,Dirk, DESC, 2000.

5.cd5 Nd5 6.a3 e6 7.e4 N5f6 8.h3 Bh5 9.d3 c5 10.g4 Bg6 11.Qb3 Be7 12.Nbd2 Rc8 13.Bg2 0-0 14.Rc1 a5 15.h4 h5 16.g5 Ne8 17.ba5 c4 18.Rc4 Nc5 19.Rc5 Bc5 20.Ne5 Kh7 21.Ndc4 Nd6 22.Nb6 Bb6 23.ab6 Ra8 24.Bd4 Ra5 25.0-0 Qa8 26.Qb2 Rb5 27.Qa1 Rd8 28.Ng6 fg6 29.Rc1 Rb3 30.Bg7 Rd3 31.Rc7 Nb5 32.Bf8 R8d7 33.Rd7 Rd7 34.Bc5 Qh8 35.Qh8 Kh8 36.e5 Nc3 37.Bh3 Ne2 38.Kh2 Nf4 39.Bf1 Rd1 40.Ba6 Rd7 41.Bc4 Rd1 42.a4 Ra1 43.Bb5 Kg7 44.Kg3 Nd5 45.f3 Kf7 46.Bf2 Ra2 47.Bd7 Ne7 48.Kg2 Nd5 49.Kg3 Ne7 50.Kg2 Re2 51.f4 Rd2 52.Bb5 Rb2 53.Bf1 Ra2 54.Bb5 Nd5 55.Kf3 Ra3 56.Ke4 Nc3 57.Kd4 Na4 58.Ba4 Ra4 59.Ke3 Ke8 60.Kf3 Kd7 61.Be3 Kc6 62.Bf2 Kd5 63.Be3 Ra3 64.Kf2 Ke4 65.Bc5 Rh3 66.f5 Kf5 67.Kg2 Rh4 68.Be7 Rg4 69.Kh3 Ke5 70.Kh2 Kf4 71.Bf8 e5 72.Bd6 Rg5 0–1. bambinik – axelo, Internet, 2002.

5.Nbd2 Ngf6+= 6.a4 e6 7.b5 (7.Bc3 Bd6+=) 7...Bd6 8.e4 Qa5 9.ed5 (9.Be2 cb5 10.0-0 Bf3 (worse is 10...ba4 11.e5+=) 11.Nf3 Bb8= (worse is 11...ba4 12.e5+/–)) 9...ed5 10.bc6 (10.Be2 0-0–/+) 10...bc6–/+ 11.Be2 Bf3 (11...Rb8 12.Ra2 0-0 13.0-0+=) 12.Bf3+= Bb4 (12...Rb8 13.Bd4+=) 13.Qc1 (13.Bc1 Bc3 14.Ra2 0-0+=) 13...0-0–/+ 14.c3 (14.Kd1 Rfe8–/+) 14...Rfe8 15.Kd1 (15.Kf1 Bd6–/+) 15...Bd6 16.Re1 (16.Qc2 Rab8–/+) 16...Ne5 17.Qc2 Qb6 18.d4 Nd3! 19.Qd3 Qb2 20.Rb1 Qa2 21.Re8 (21.Re2 Qa4 22.Qc2 Qa5–+) 21...Re8 22.Be2 (22.a5 Bf4 23.Rc1 Bh2–+) 22...Bf4 (worse is 22...Qa4 23.Ke1–+) 23.Rb4 a5 24.Rb6 (24.Rb7 c5! 25.g3 Bd2 26.Qd2 Qa1 27.Qc1 Qa4 28.Ke1 cd4 29.cd4 Qd4–+) 24...Nd7 (24...c5!? 25.Nb1 cd4 26.cd4–+) 25.Rb7 c5 26.g3 d2 27.Qd2 Qa1 28.Qc1 Qa4 29.Kd2?? cd4–+ 30.Qb2 dc3 31.Qc3 Qe4 32.Qe3 Nc5 33.Rb5 d4 34.Qf3 Qe7 35.Bc4 Qe1 36.Kc2 d3 37.Bd3 Nd3 38.Qd3 Qf2 39.Kb3 g6 40.Qc3 Qe3 41.Ra5?? Rb8 42.Kc2 Qe2 43.Kc1 Rd8 (43...Rd8 44.Kb1 Rd1 45.Qc1 Rc1 46.Kc1 Qe1 47.Kc2 Qa5–+) 0–1. Stabenow,Juergen – Sobeck,G, corr DDR, 1982.

5.Nbd2 Ngf6+= 6.c4 e6 7.Bc3 Bf3 8.Nf3 dc4 9.dc4 Ne4 –/+.

5.Nbd2 Ngf6 6.g3 e6 7.a3 a5 8.c3 Be7 9.Bg2 0-0 10.0-0 Ra7 11.Nb3 Bf3 12.Bf3 ab4 13.cb4 Ne8 14.Bd4 b6 15.Qc2 Qa8 16.Bb2 c5 17.bc5 bc5 18.e4 Bf6 19.ed5 (worse is 19.Nc5 Bb2 20.Nd7 Ba1 21.Nf8 Bd4 (21...Ra3?! 22.Nd7=) 22.Nh7 Kh7 23.ed5 ed5–+) 19...ed5 20.Rfc1 (20.Nc5 Bb2 21.Nd7 Ba1 22.Nf8 Bd4–+ (22...Ra3?! 23.Nd7=)) 20...Rc7 21.Nd2 Bb2 22.Qb2 Nef6 23.Bg2 Rb8 24.Qa2 Qa5 25.Re1 (25.a4 Ne5 26.Rab1 Re8=) 25...Nf8 (25...Qc3!? 26.Bd5 Ne5+=) 26.Nf3 Rcb7 27.Qe2 Re8 28.Qf1 Re1 29.Qe1 Qe1 (29...Qa4 30.Qe5+=) 30.Ne1= Ne6 31.a4 g6 32.Nf3 Ra7 33.Ne5 Nd4 34.g4 h6 35.h4 g5 36.hg5 hg5 37.Nf3 Ne2 38.Kf1 Nc3 Exerts pressure on the isolated pawn 39.a5 Ng4 40.Ra3 d4 41.Ng5 Ne5 42.Be4 c4 43.Nf3 Nf3 (43...Ne4?! 44.Ne5 Nd2 45.Ke2+=) 44.Bf3 cd3 45.a6 d2 46.Ra1 Kf8 47.Be2 Ke8 48.f4 Kd8 49.Kf2 Kc7 (49...Ne2 50.Ke2 Kc7 51.Kd2+=) 50.Ra3? (50.f5 Kb6–+ (50...Ne2 51.Ke2 Kb6 52.Kd2+=)) 50...Kc6 (50...d1N 51.Bd1 Nd1 52.Ke2 Nc3 53.Kd3–+) 51.f5? (51.Ra1 Kb6–+ (51...Ne2?! 52.Ke2 Kb5 53.Kd2+=)) 51...f6 (51...d1N!? 52.Bd1 Nd1 53.Ke2 Nc3 54.Kd3–+) 52.Kf3 (52.Ra1 Kb6–+ (52...Ne2?! 53.Ke2 Kb5 54.Kd2=)) 52...Kc5 53.Ra1 d3! 54.Bd1 (54.Bd3 d1Q Double attack) 54...Nd1 (54...Ra6 55.Ra6 Nd1 56.Ra1–+ (56.Rf6?? Nc3 57.Kf2 d1Q–+)) 55.Rd1 Kd4 (55...Ra6?! 56.Ke3–/+) 56.Rd2 Ra6 57.Rh2 Ra5 0–1. Heinzel,Peter (2065) – Weber,Martin (1975), Dortmund op, 2009.

5.e4 e5 6.a3 Bd6 +=.

5.a3 c6 6.Nbd2 (6.e3 Ngf6=+) 6...Bd6 (6...a5 7.Bc3=+) 7.e4= Ne7 (7...Bf4 8.Bd3=) 8.Bd3 (8.h3 Bh5=) 8...b5 (8...Bf4 9.0-0=) 9.0-0 (9.h3 Bf3 10.Qf3 Ng6+=) 9...a6 (9...Bf4 10.h3 Bd2 11.hg4 de4 12.Be4=) 10.Re1 (10.h3 Bh5+=) 10...Qb8 (10...Bf4+=) 11.Nf1 (11.e5 Bc7+=) 11...Nb6 (11...de4!? 12.Be4 Nf6=) 12.e5+= Bc7 13.Qc1 (13.Ne3 Bh5=) 13...Bf5 (13...Bf3 14.gf3 Nc4 15.Bc3=+) 14.Ng3 (14.Bf5 Nf5 15.g4 Ne7=+) 14...Bg6 (14...Bd3 15.cd3 0-0 16.Qg5=) 15.Ng5 (15.Qg5 Bd8+=) 15...h6 16.Nh3 Nc4 (16...a5 17.Nf4=) 17.Bc3 Bb6 (17...0-0 18.Nf4=) 18.Nf4+= Qa7 (18...0-0 19.a4+=) 19.Rd1 (19.Ng6 Ng6 20.Rd1 0-0+=) 19...Qd7 (19...0-0 20.a4+=) 20.Ngh5 (20.a4 0-0+=) 20...0-0 21.Ng6 fg6 22.Nf4 g5 23.Ng6 Ng6= 24.Bg6 Qa7 25.Rd3 Rf4=+ 26.g3? Rd4–+ 27.Bd4 Bd4 28.c3 Bf2 29.Kg2 Ne5 30.Ra2 Nd3 31.Bd3 Be3 32.Qe1 e5 33.Re2 d4 34.cd4 Bd4 35.Qf1 c5 36.Be4 Rd8 37.Qf5 Qf7 38.Qh7 Kf8 39.Bg6 Qf6 40.bc5 Ke7 41.c6 Rf8 42.Re1 g4 (43.Bf5 Qc6 44.Be4 Rf2 45.Kh1 Qf6–+) 0–1. Peray,Sebastien (2010) – Poesson,Thierry (2135), France, 1998.

5.a3 Ngf6 6.e3 =+.

5.b5 Bb4 6.Nc3 (6.Nbd2 Ngf6–/+) 6...Ngf6 7.h3 Ne4 (better is 7...Bf5 8.a3 Ba5–/+) 8.Qd3?? (8.hg4 Nb6 9.Nd2 Nc3 10.Bc3 Bc3 11.e3 Ba1 12.Qa1–/+) 8...Bf5–+ 9.g4? (9.Qe3 Nb6 10.Nd2 Nd2 11.Qd2–+) 9...Bg6 10.Qe3 Nb6 11.a3 (11.Nd2 Na4!! 12.Na4 Bd2 (12...Nd2?! 13.0-0-0 Nc4 14.Qb3–/+) 13.Qd2 Nd2 14.Kd2 Qf6–+) 11...Nc4 12.Qc1 (12.ab4 Ne3 13.fe3–+) 12...Ba5 (12...Nc3?! 13.ab4 Nb5 14.Ne5–/+) 13.Bg2 (13.Nd2 Ned2 14.e3 Ne4 15.Bc4 dc4–+) 13…Nb2 (13...Nb2 14.0-0 Bc3–+) 0–1. Schaar,Joerg (1940) – Teske,Heike (2170), RSX16D – Goldener Oktober–1, 2007.

6.ba5 Ra5 7.Nbd2 Ngf6 8.c4 Bd6 (8...Qa8 9.Qb3=+) 9.c5= Be7 10.Qb3 Qa8 11.e3 0-0 12.Bb5 Rb8 13.Bc3 Ra7 14.Ne5 Ne5 15.de5 Ne4 16.Ne4 de4 17.a4 (17.Bd4!?=+) 17...c6 18.Bc4 Bc5 19.0-0 b5 20.Rfb1 b4 21.Bd4 (21.Kh1 Be7–/+) 21...Ra5 (21...Bd4 22.ed4 Rd7 23.h3–/+) 22.Rb2 (22.Bb2 Be7–/+) 22...Qa7 (22...Be7 23.Rbb1–/+) 23.Rd2 Qe7 24.Rc1 Bd4 25.ed4 Bf5 (25...Rba8 26.Qg3 Bf5 27.Bb3=+) 26.Be2=+ Qg5 (26...Qa7 27.Rc6 Ra4 28.Rdc2=+) 27.Rdd1 e3 28.Bf3 ef2 (28...e2 29.Be2 Be4 30.f3=) 29.Kf2= Bg4 30.Bg4 Qg4 31.Rc6 Rd8 32.Rc4 Qh5 33.h3+= Rad5 34.Rb4 h6 35.Rb8 Qh4= 36.Kf1 Rd4 37.Rd4 Qd4 38.Qb2 Kh7 39.Qd4 Rd4= 40.a5 Kg6 41.g4 Ra4=+ 42.Ra8 Re4 43.Kf2 Re5 44.Ra7 Rb5 45.a6 Rb2 46.Kf3 Rb3 47.Kg2 Ra3 48.h4 Kf6 49.Kf2 g6 50.Kg2 h5 51.g5 Kf5 52.Rf7 Kg4 53.Rf6 Ra2–/+ 54.Kf1 Ra6 55.Rg6 Kh4 56.Rg8 Ra5 57.g6 Rg5 58.Kf2 Kg4 59.g7 Rg6 60.Kg2 Kg5 61.Kf3 Kh4 62.Kf4 Rg5 63.Kf3 Rg4 64.Ke3 e5 65.Kf2 e4 66.Ke3=+ Rg6 67.Kf4= Rg5 68.Ke4 Kg4 69.Ke3 h4 70.Kf2 Kh3 71.Kf3 Rg4 72.Kf2 Rf4 73.Kg1 Rf7 74.Ra8 Rg7 75.Kh1 Rg3 76.Ra2 Rd3 77.Rh2 Kg4 78.Rg2 Kf4 79.Kh2=+ Rc3 80.Rg8 Re3 81.Rf8 Kg5 82.Rg8 Kf6 83.Rh8 Rg3 84.Rh4 Rg8 85.Re4 Kf5 ½–½. OrangoTango (2425) – pixntel (2465), 2003.

6.c3 Ngf6 7.Nbd2 Bd6 8.e3 0-0 9.Be2 Ne4 10.Ne4 de4 11.Nd2 Be2 12.Qe2 ab4 13.cb4 f5 (13...Qg5 A) 14.Ne4? Qg2 15.Nd6 Qh1 (15...cd6?! 16.Qf1 Qf3 17.Rg1=+) 16.Kd2 Qg2–+; B) 14.f3 ef3 15.Qf3=) 14.f4 (14.0-0 Qh4 15.h3 Nb6=+) 14...Nf6=+ 15.0-0 Nd5 16.Nc4 Rf6 (16...Qh4 17.Ne5=+) 17.Ne5 (17.Na5 Ra7=+) 17...Rh6=+ 18.g3 (18.Rae1 Qh4 19.g3 Qh5=+) 18...g5 (18...Qe8 19.Rac1=+) 19.Kh1 (19.Rac1 g4=) 19...Qe7 20.Rae1 g4 21.Kg2 Qg7 22.Rh1 (22.Qb5 c6 23.Qe2 Rh3=+) 22...Rh3 (22...Be5 23.fe5 Qg5 24.Bc1=+) 23.Nc4 Bf8 24.Ra1 h5 25.Rag1 h4 26.Kf1 Qh6–/+ 27.Kg2 Kg7 28.Ne5 Qh5–+ 29.Bc1 Be7 30.Qb5? Rh8 31.Qf1 hg3 32.hg3 Rh2 33.Rh2 Qh2 0–1. dannyboy238 – pierred, ChessWorld.net, 2006.

7.c4 Nb6 8.cd5 (8.c5 Nc4 9.Bc3 b6=) 8...Bf3 (8...Nc4 9.de6 Be6 10.Bc1=) 9.gf3 ed5 10.Nc3 Qd7 (10...Bd6 11.e4=+) 11.e4= Be7 (11...Rd8 12.e5 Qe6 13.Rc1=) 12.Qc2 de4 (12...Qe6 13.Rg1 Rg8 14.Ne2 de4 15.fe4 Ne4 16.Qc7+=) 13.fe4+= (< 13.Ne4 0-0=+) 13...Rd8 (< 13...Qd4 14.Nd5 Qe4 15.Qe4 Ne4 16.Nc7 Kf8 17.Na8 Na8 18.Rc1+–) 14.Rg1 (14.Rc1 Qd4 15.Nd5 Qe4 16.Qe4 Ne4 17.Ne7 Ke7 18.Rc7 Rd7 19.Rd7 Kd7 20.Bg7 Re8=) 14...0-0= 15.Bd3 Qh3 16.Ne2 Rfe8 17.Rg3 Qh5 18.Bc1 Qh2 19.Qc7+/– Bd6 20.Qb6 Bg3 21.Ng3 Qg1 22.Nf1 Ne4 23.Be3 Nc3 24.Qb7 Nd5 25.0-0-0 Rc8+= 26.Kb2 Qg2 27.Rc1 Rb8 28.Qa7 Ne3 29.Ne3 Qf2 30.Nc2 Qf3 31.Bc4 Rec8 32.Ne1 Qf2 33.Kb1 Qf5 34.Ka1 Ra8 35.Qe7 Qf4 36.Kb1 Qf5 37.Ka2 Re8 38.Qb7 Qf2 39.Kb1 Qf5 40.Nd3 Rab8 41.Qg2+/– Rb5 42.Bb5 Qb5 43.Nb2 Rb8 44.Ka1 Qd7 45.Qg3 Rf8 46.Rd1 f5 47.Nc4 Qd5 48.Ne5 a4 49.Qf4 h6 50.Rb1 g5 51.Qf2 Rc8 52.Qd2 Rf8 53.Rb6 Kg7 54.Rb4 Qh1 55.Kb2 Qe4 56.Ra4 Rc8 57.Rb4 f4 58.Qf2 h5 59.Rb3 g4 60.Nd3 f3 61.Nc5+– Qd5 62.Kc3 Re8 63.Rb7+– Kg8 64.Qc2 Re3 65.Kb4 Rb3 66.Qb3 Qb3 67.Nb3 f2 68.Nd2 g3 69.Rb5 Kf7 70.Rg5 h4 71.Nf1 Ke7 72.Rg3 hg3 73.Ng3 Ke6 74.Kc5 Kd7 75.d5 Ke7 76.Kc6 (76...Kf6 77.d6+–) 1–0. Pierred (2195) – Kohl3178 (2550), Rated game, 5m + 0s, 2005.

7.c4 Be7 8.e3=+.

7.Nbd2 Nb6 8.c4 dc4 9.e4 Qd7 10.Qc2 Bf3 (10...Qb5 11.Ne5+=) 11.gf3+= Qb5 12.Nc4 Qa4 (12...Nc4 13.Bc4 Qh5 14.Be2+=) 13.Qc3 Nc4 14.Bc4 Be7 15.Rg1 Kf8 (15...0-0 16.Kf1+=) 16.Bb3 Qd7 17.d5 ed5 18.Bd5 c6 19.Ba2 b5 20.Rd1 Qe8 21.e5 b4 22.Qc4 (22.Qe3!? Nd5 23.e6+=) 22...Nd5 (22...ba3 23.Bd4 Nd5 24.Kf1–/+) 23.Qg4 Rg8 24.Bd5 (24.ab4 ab4 25.e6 g5 26.Rd5 cd5 27.Bd5 fe6 28.Ba8 Qa8 29.Qe6 Rg6 30.Qf5 Kg8=) 24...cd5 25.a4 (25.ab4 Qb5 26.Rc1 Bb4 27.Bc3 Bc3 28.Rc3–/+) 25...Qa4 26.e6 f6 27.Rd5 (27.Qh5 Qe8 28.Qd5 a4–/+) 27...Qc6 28.Qe4 Ra6 29.Kf1 (29.Kd2 a4 30.Re1 Ke8–+) 29...Qe6 (better is 29...a4!? 30.Rd4 Qe4 31.Re4–+) 30.Qe6 Re6 31.Ra5 Kf7 32.Rh5 Rb6 33.Ke2 Rd8–+ 34.Rd1?? Rbd6 35.Rd6 Rd6 36.Rb5 Rd7 37.Ke3 g5 38.Bc1 Bd6 39.Ke4 Ke6 40.f4 gf4 41.Bf4+= Bf4 42.Kf4 Rd4 43.Ke3 Rh4 44.Kf3 Kf7 45.Kg3 Rc4 46.f4 Kg6 47.Kg4 h5 48.Kg3 Rd4 49.Kf3 Rc4 50.Kg3 Rc3 51.Kh4 b3 52.f5 Kh6 53.Rb4 Rf3 54.Rb6 Rf5 55.Rb3 Rf4 56.Kg3 Ra4 57.h4 Kg6 58.Rc3 Rg4 59.Kh3 Rd4 60.Kg3 Re4 61.Ra3 Kf5 62.Ra5 Re5 63.Ra3 Rd5 64.Rb3 Ke4 65.Rb4 Ke5 66.Rb3 f5 67.Re3 Kf6 68.Ra3 Rd4 69.Ra5 Ke6 70.Rb5 Rg4 71.Kh3 Rd4 72.Kg3 Rd5 73.Rb3 Ke5 74.Re3 Kf6 75.Ra3 Rd1 76.Ra5 Rg1 77.Kf3 Rf1 78.Kg3 ½–½. Middendorf,F – Reefschlaeger,H, BL8384 Muenster–Hamb, 1984. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.d4 e6 5.a3 a5)

7.e3 Nb6=+.

7.e3 Ne4 8.Be2 c6 9.bc6 bc6 10.0-0 (10.Nbd2 Rb8 11.Rb1 Rb7=+) 10...Rb8 11.Bc1? (11.Ra2 Bd6=+) 11...Qc7?? (11...Rb1 12.Rb1 Nc3-/+) 12.c4= Bd6 13.h3 Bh5 14.cd5 (14.c5 Be7 15.Nfd2 Be2 16.Qe2 Nd2 17.Bd2 0-0=) 14...cd5=+ 15.Nfd2 Be2 16.Qe2 0-0 (16...Nef6 17.e4 de4 18.Ne4 Ne4 19.Qe4-/+) 17.Ne4=+ de4 18.Nd2 f5 19.g3 (19.Qc4 Kf7=) 19...Qc2 (19...Bg3 20.Nc4 Rfc8 21.Na5 Bf2 22.Qf2 Qa5 23.Bd2-/+) 20.Qd1 (20.Qa6 Nb6=) 20...Qd3 (20...Rfc8 21.Qc2 Rc2 22.Rd1-/+) 21.a4 (21.Qa4 Qb5 22.Qb5 Rb5=) 21...Nf6 (better 21...e5-/+) 22.Ba3?? (better 22.Nb1 Rfc8 23.Ba3-/+) 22...Ba3-+ 23.Ne4 Qe4 (23...fe4 24.Qd3 ed3 25.Ra3-+) 24.Ra3 Rb4 25.Rc3 Rfb8 26.Rc7 Rb1 27.Qe2 Rf1 28.Qf1 Rb1 29.Qb1?? (29.Rc1 Rb4 30.Rc8 Kf7 31.Rc4-+) 29...Qb1 30.Kg2 Qe4 (30...Ne4 31.Rc8 Kf7 32.Rc6 Qa2 33.Rb6 Qf2 34.Kh1 Ng3) 31.Kh2 (31.Kg1 Qf3 32.Rc8 Kf7 33.Rc7 Kg6-+) 31...Qd5 (better 31...Qf3 32.Rc8 Kf7 33.Rc2-+) 32.Rc8 Kf7 33.Rc5 (33.Rc2 Qb3 34.Rd2 Ne4-+) 33...Qd6 (33...Qa2 34.Rc7 Kg6 35.e4 Qf2 36.Kh1 Ne4 37.Rc3 Nc3 38.g4 Ne4 39.gf5 ef5 40.d5 Ng3) 34.Ra5 Ne4 35.Kg2 (35.Rb5 Qc6 36.Rc5 Qa4 37.Rc7 Kf6-+) 35...Qa3 36.Ra7 (36.Re5-+) 36...Kf6 37.a5 (37.Rd7 Qa2 38.Ra7 Qf2 39.Kh1 Ng3) 37...Qa2 38.h4 (38.Rc7 Qf2 39.Kh1 Ng3) 38...Qf2 39.Kh1 (39.Kh3 Qg3) 39…Ng3 0-1. OttawaSenators (2270) - universe64 (2280), Yearly Bullet Arena, 2018.

7.e3 Ne4 8.Be2 Bd6 9.0-0 0-0 10.h3 Bh5 (10...Bf5 11.c4=+) 11.Nbd2 (11.c4 dc4 12.Bc4 Ndf6=) 11...Nd2=+ 12.Nd2 Be2 13.Qe2 f5 (13...Qg5 14.c4=) 14.g3 (14.c4 Qh4=) 14...Nf6 15.c4 c6 16.bc6 bc6 17.cd5 (17.Rfb1 Ne4=+) 17...cd5=+ 18.a4 Rb8 19.Ba3 Ba3 20.Ra3 Qc7 21.Nb3 Ne4 22.Rc1 Qd6 23.Nc5 Rfc8 24.Raa1 (24.Qf1 Nc5 25.Rac3 Qd7 26.Rc5 Rc5 27.Rc5 Qa4=) 24...Nc5-/+ 25.dc5 Rc5 26.Rc5 Qc5 27.h4 (27.Qd1 Rb4-/+) 27...Rb4 28.Qa6 Kf7 29.h5 Rc4 (29...Qc3 30.Qa7 Kf6 31.Rd1-+) 30.Qb7 Qc7 31.Qc7 Rc7 32.Kg2 Rc4 33.Kf3 (33.f4 g6-+) 33...Kf6 34.Ra2 Kg5 35.Kg2 Kh5 36.Ra1 Kg6 37.Ra2 Kf6 38.Ra1 g5 39.Ra2 h5 40.Ra1 g4 41.Ra2 Ke5 42.Ra1 Kd6 (42...Ke4 43.Ra2-+) 43.Ra2 e5 44.Ra1 (44.Kf1 d4-+) 44...d4 45.ed4 ed4 46.Rd1 (46.Kf1 Kd5-+) 46...Kd5 47.Re1 Ra4 48.Re8 (48.Rh1 d3-+) 48...Rc4 (better 48...d3!? 49.Re1 Rd4 50.f3-+) 49.Rf8 Kc5 (49...d3!? 50.Rf5 Kd4 51.Ra5-+) 50.Rf5 Kb4 51.Rh5 a4 52.Rh8 (52.Kf1-+) 52...a3 53.Ra8 Kb3 54.Rb8 Rb4 55.Ra8 a2 56.Ra2 Ka2 57.f3 Rb2 (57...Rb2 58.Kg1 gf3 59.Kf1 d3 60.g4 Re2 61.g5 d2 62.g6 d1Q) 0-1. OttawaSenators (2120) - universe64 (2255), lichess.org, 2018.

7.Ne5 Bf5 8.e3 a4 (8...Bd6 9.Bd3=+) 9.Bd3 Bd3 (9...Ne4 10.Nc3=) 10.cd3= Ra5 11.Bc3 Rb5 12.Qa4 Rb6 13.0-0 Bd6 14.f4 0-0 15.Nd2 (15.Qc2 Ra6=) 15...Qa8 16.Qa8 Ra8 17.Bb4 h6 18.Rfc1 Bb4 19.ab4 Ra1 20.Ra1 Rb4 21.Ra8 Kh7 22.Nf7 Ng4 23.Rd8 Ndf6 (23...Nb6=+) 24.Rh8 (better is 24.h3 Ne3 25.Rh8 Kg6 26.Ne5 Kf5 27.Kf2 Ng2 28.Kg2 Kf4 29.Ndf3=) 24...Kg6–/+ 25.Ne5 Ne5 26.de5 Ng4 27.e4 Rb2 28.Nf1 de4 29.de4 Rb1 30.f5 (30.Rf8 Ne3 31.Kf2 Nf1 (< 31...Rf1 32.Ke3 c5 33.Re8+/–) 32.f5 ef5 33.ef5 Kg5–/+) 30...ef5–+ 31.e6 Ne3 32.Kf2 Rf1 33.Ke3 Kf6 34.Ke2 Rf4 35.ef5 Rf5 36.Rc8 Rc5 37.Kd3 Ke6 38.g3 b5–+ 39.Rb8 Rh5 40.h4 c6 41.Rg8 g5 42.Rg6 Kd5 43.hg5 Rg5 44.Rh6 Rg3 45.Kc2 b4 46.Rh5 Kc4 47.Rh4 Kb5 48.Kb2 Ka4 49.Rh2 c5 50.Rc2 Kb5 51.Rd2 c4 52.Re2 Ka4 53.Ka1 Rg1 54.Kb2 c3 (55.Kc2 Ra1–+) 0–1. Pierred (2205) – Puffbohne (2460), Rated game, 3m + 0s, 2005.

5.a3 Bd6 6.h3 Be6 7.d3 f6 (7...a5 8.b5+=) 8.c4= c6 9.Be2 Ne7 10.0-0 0-0 11.Nc3 Rc8 12.Nh2 Qe8 13.e4 (13.c5 Bc7=) 13...d4+= 14.Nb1 f5 15.Nd2 Nf6 (15...Qg6 16.Nhf3+=) 16.Bf3 (16.f4 fe4 17.de4 c5=) 16...f4 17.Ng4 Nd7 18.Nh2 g6 (18...Qf7 19.Bg4=) 19.Bg4 Bf7 20.c5 Bc7 21.Qc1 Kg7 22.Bd1 (22.Nhf3 Rd8+=) 22...h5 (22...b6 23.cb6 ab6 24.Nhf3=) 23.Bb3 Bb3 24.Nb3 g5 25.Qc4 Ng6 (25...Qg6 26.Kh1=) 26.a4 Nf6 27.f3 Qd7 Black plans g4 28.b5 g4 29.b6 ab6 30.cb6 Bb6 31.Qb4 Ba7 32.fg4 hg4 33.hg4 Ng4 34.Ng4 Qg4 35.Nd2 Rf7 36.Nf3 Rh8 37.Qb3 (37.a5 Qg3–/+) 37...Rh3 (37...Kf8!? 38.Ba3 Ke8 39.Bd6–+) 38.Rf2 Rg3 (38...Rh6 39.Kf1–/+) 39.Ba3 Bb8 40.Rc1 (40.a5 Qd7+=) 40...Nh4–/+ 41.Nh4 Qh4 42.Rc6 (42.a5!?–/+) 42...bc6–+ 43.Qb8 Rd3 44.Qe5 Kh7 45.Qe6 Qh5 Black prepares the advance f3 (45...Rg7 46.Qf5 Kh8 47.Qe5–+) 46.Bd6 Rd1 47.Rf1 Rf1 (better is 47...f3 48.Qf7 Qf7 49.Rd1 f2 50.Kf1 Qc4 51.Kf2 Qc2 52.Ke1 d3 (52...Qa4?! 53.Rd2–+) 53.Rd3 Qd3–+) 48.Kf1 f3 (48...f3 49.Qh3 fg2 50.Kg2 Rf2 51.Kf2 Qh3–+) 0–1. Valenta,Vit (2235) – Obsivac,Josef (2315), CZE–chT2e, 2007.

5.a3 Ngf6 6.Be2 Bf3 7.Bf3 e4 8.Be2 c5 9.bc5 Bc5 10.d4 ed3 11.cd3 Qb6 12.Bc3 (12.Bf6 Nf6 (worse is 12...gf6 13.d4 Bd6 14.0-0+/–) 13.Qa4 Qc6 14.Qc6 bc6=) 12...d4 13.ed4 Bd4 14.Bd4 Qd4 15.Nd2 0-0 16.0-0 Rac8 17.Rc1 (17.Nf3 Qd6 18.Re1+=) 17...Rc3 The isolani on d3 becomes a target (17...Nd5!?–/+) 18.Nf3= Qc5 19.Rc3 (19.d4 Qa5 20.Rc3 Qc3=) 19...Qc3+= 20.Qc1 Rc8 21.Qc3 Rc3 22.Ra1 Kf8 23.Kf1 (23.g3 Nc5 24.d4 Ne6+=) 23...Nc5 24.d4 Nb3 25.Rb1?? (better is 25.Re1+=) 25...Rf3!–+ 0–1. Fastovets,Arsen – Reshetar,Alexsander (1815), 29th Mukachevo Rating, 2016. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e5)

5.Bb5 =+.

5.c4 e4 6.h3 Bh5 (6...ef3 7.hg4 dc4 8.Qf3+/–) 7.g4 Bg6 (7...Bb4? 8.Bg7 (8.gh5?! Ngf6+/–) 8...ef3 9.gh5+- (9.Bh8?! Bg6+-)) 8.Ne5 Qf6 (8...Bb4? 9.Nd7 d4 10.Bd4+-) 9.Ng6 Qb2 10.Nc3 hg6 (10...fg6 11.Rb1 Qa3 12.Nb5 Qa2 13.Ra1 Qa1 14.Qa1+/–) 11.Rb1 Qa3 12.Nb5 Qa2 13.Ra1 Qb2 (13...Qa1 14.Qa1 Kd8 15.Na7+/–) 14.Nc7+/– Kd8 15.Na8 Ne5 16.Be2 dc4 17.Ra7 Qb4 18.Qa1 (18.f4 ef3 19.Bf3 b5+=) 18...Bd6= 19.0-0 (better is 19.Qa2!?=) 19...Rh3=+ 20.Rb1 Qd2? (better is 20...Qc5+=) 21.Rd1?? (better is 21.Ra2 Qd5 22.Nb6+-) 21...Qe2–/+ 22.Rd6 Nd7?? (22...Kc8 23.Nb6 Kc7 24.Rb7 Kd6 25.Qd4 Ke6 26.Qd5 Kf6 27.Qd8 Ke6 28.Qd5 Kf6 29.Qd8 Ke6 30.Qd5=) 23.Rd7= Kd7 24.Rb7 (24...Kc8 25.Rc7 Kd8 26.Qd4 Ke8 27.Qd7 Kf8 28.Qf7#) 1–0. Kreuzer,Uwe – Gross,Wilhelm, corr SOK–91–72, 1991.

5.Be2 e4 6.Nd4 Be2 7.Qe2 Qg5 8.0-0 (8.Nc3 Ngf6=) 8...Bb4= 9.f4 Qf6 (9...Qg6 10.Qb5 Bc5 11.Nb3+=) 10.Qb5+= c5 (better is 10...Qb6!? 11.Qb6 cb6+=) 11.a3+/– (worse is 11.Qb7 Rb8 12.Qd5 cd4 13.Bd4 Ne7 14.Qe4 Qf5 15.Qf5 Nf5 16.Ba7 Rb7+=) 11...a6 (11...Ne7 12.ab4 cd4 13.Qb7+/–) 12.Qb7+- Rb8 13.Qd5 Bd2? (better is 13...Ba5!? 14.Nc6 Qb2 15.Qe4 Kf8+-) 14.Nd2+- Rb2?? (14...Ne7 15.Qe4 Rb2 16.N4b3+-) 15.Qe4 (better is 15.Ne4 cd4 16.Nf6 Ngf6 17.Qd4 Rc2 18.e4+-) 15...Ne7? (better is 15...Qe7 16.Nc6 Qe4 17.Ne4 Rb6+-) 16.N4b3 0-0 (16...Qc6 17.Qc6 Nc6 18.Rfc1+-) 17.Nc4 Rb3 (17...Nc8 18.Rfd1 Ncb6 19.Rd6+-) 18.cb3 Ng6 (18...Nc8 19.Rad1 Ndb6 20.Rd3+-) 19.Rad1 Qd8 (19...Nb8 20.f5 Qe7 21.Qg4+-) 20.Rd6 (better is 20.Qb7+-) 20...Re8 (20...Nf6 21.Rd8 Ne4 22.Rfd1+-) 21.Qd3 (21.Qd3 Re7 22.Rd1+-) 1–0. Shabanov,Nurlan – Israilov,Agil, Zira – Blitz Open, 2016. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e5)

5.Be2 e4 6.Ne5 Be2 7.Qe2 Ne5 8.Be5 =+.

5.Be2 Bf3 6.gf3 Bb4-/+ 7.f4 Bd6 8.Rg1 Qh4 9.Rg7 Ngf6 10.fe5 Be5 11.Be5 Ne5 12.Rg2 0-0-0 Black plans d4 13.d4 Rhg8 14.de5?? (better 14.Rg3 Rg3 15.hg3 Qh1 16.Kd2 Ne4 17.Kc1 Qd1 18.Kd1 Nf2 19.Ke1-/+) 14...Rg2-+ 15.ef6 Qf2 16.Kd2 d4 (16...d4 17.Kc1 Rg1-+) 0-1. Munksgaard,De (2000) - Carlstedt,J (2440), Esbjerg DEN, 2019.

5.Be2 Bf3 6.Bf3 Ngf6 7.b5 Bd6 8.0-0 0-0 9.d3 c6 10.bc6 bc6 11.Nd2 Re8 Black prepares e4 12.c4 e4 (12...Rb8 13.cd5 cd5 14.Nb3+=) 13.de4 de4 14.Bf6 Nf6 15.Be2 Qe7 16.Qc2 a5 17.a4 Rad8 18.Rfd1 Qe5 19.Nf1 h5 20.Rab1 h4 21.h3 (21.Qb2 Qc5+=) 21...Nd7 22.Qb2 Nc5 23.Qe5 Be5 24.Rd8 Rd8 25.f4 ef3 26.Bf3 Na4 27.Bc6 Nc3 28.Rb6 (28.Rb7 Rc8 29.Bd5 Nd5 30.cd5 Ra8+=) 28...Rd1–/+ 29.Kf2 (29.g4 hg3 30.Rb7 a4–+) 29...a4–+ 30.Ra6 Ra1 31.Ra8 (31.Ra5 f6–+) 31...Kh7 32.e4?? (better is 32.Ra5 f6 33.g3–+) 32...Bd4–+ (32...Bd4 33.Ne3 Rd1–+) 0–1. Melderis,U (2000) – Alekseenko,K (2495), European Rapid, 2014.

5.Be2 f6 6.a3 a5 A) 7.Nc3 ab4 (7...Nb6 8.b5 Bd6 9.0-0 Ne7 10.h3 Bf5=) 8.ab4 Ra1 9.Qa1 Nb6 10.b5 Bb4=; B) 7.b5 Bd6 8.h3 Bf3 9.Bf3 Ne7 10.Nc3 Nb6=.

5.Be2 f6 6.Nc3 A) 6...Bb4 7.Nd5 Bd6 8.e4 Nc5 9.d4 ed4 10.Qd4 Ne7=; B) 6...Nb6 7.a3 Bd6 (7...a5 8.b5 Bd6 9.e4 d4 10.Nb1 Be6=; 7...c6 8.0-0 Bd6 9.e4 Ne7 10.ed5 Ned5=) 8.0-0 a5 9.Ne1 Bf5 10.f4 ef4=; C) 6...Bf3 7.Bf3 Nb6 8.a3 Ne7 9.Be2 Qd7 10.d4 e4=; D) 6...c6 D1) 7.b5 Bd6 (7...Bb4 8.0-0 Ne7 9.bc6 bc6 10.a3 Bd6=+; 7...Ne7 8.0-0 cb5 9.Nb5 Nb6 10.Ba3 Nc6=; 7...Qc7 8.h3 Bf5 9.Rb1 Bd6 10.Nh4 Be6=; 7...Nh6 8.0-0 Bd6 9.h3 Be6 10.Rb1 0-0=) 8.h3 Be6 9.Rb1 c5 10.0-0 Ne7=+; D2) 7.a3 Nh6 (7...Qc7 8.e4 de4 9.Ne4 0-0-0 10.0-0 Nb6=; 7...b5 8.e4 d4 9.Na2 Be6 10.c3 dc3=; 7...Bd6 8.0-0 Ne7 9.e4 Qc7 10.h3 Be6=) 8.0-0 Bd6 9.h3 Be6 10.Re1 0-0=+.

5.Be2 f6 6.c4 Bb4 A) 7.Qa4 Qe7 (7...Bd6 8.cd5 Nh6 9.h3 Bf5 10.e4 Bg6=; 7...c5 8.a3 Ba5 9.cd5 Nh6 10.h3 Bf3=; 7...a5 8.a3 Bd6 9.cd5 Nh6 10.h3 Bf5=) 8.Ne5 Be2 9.Nd7 Qd7 10.Qb4 Bc4=; B) 7.cd5 Ne7 8.Qa4 Bf3 9.Bf3 Bd6 10.0-0 0-0=.

5.Be2 f6 6.c4 dc4 7.Bc4 e4 (7...Nb6 8.Be2 Bb4 9.Ne5 Be6 10.Bb5 Ke7=; 7...Nh6 8.Qb3 Nb6 9.d4 Qe7 10.a3 Nc4=; 7...Qe7 8.b5 e4 9.Ba3 Nc5 10.h3 ef3=+) 8.Qb3 Qe7 9.Nd4 Ne5 10.f3 ef3–/+.

5.Be2 f6 6.c4 c6 7.cd5 cd5 8.Qa4 (8.Nc3 Bb4 9.Nd5 Bd6 10.Qa4 Nh6=) 8...Be6 (8...e4 9.Nd4 Be2 10.Ke2 Kf7=) 9.0-0 (9.d4 e4 10.Nfd2 Qb6=) 9...Bd6 (9...a5 10.ba5 Ra5=) 10.Nc3 Ne7 (10...a5=) 11.Nb5 Bb8 12.Rfc1 0-0 13.Qd1 Qb6 14.a4 a6 15.Nc3 Qd6 (15...Qb4? 16.Ba3 Qa5 17.Be7+-) 16.g3 Ba7 (16...Qb4? 17.Ba3 Qa5 18.Be7+-) 17.Ba3 Rfc8 (17...e4!? 18.b5 Bc5 19.Bc5 Nc5= (worse 19...Qc5 20.Ne4 Qb4 21.Nc3+-)) 18.d4+= ed4 19.Nd4 Bd4 20.ed4 Nf5 21.Bf1 Nb6 22.b5 Qd7 23.Bc5. Orsicz – Jadasz, corr, 1972. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e5)

5.Be2 f6 6.c4 Nh6 A) 7.c5 e4 (7...a5 8.a3 Be7 9.Nc3 e4 10.Nd4 Ne5=) 8.Nd4 Be2 9.Ne2 a5 10.Nf4 Ne5=; B) 7.cd5 Bb4 8.a3 Bd6 9.d4 e4 10.Nfd2 Be2=.

5.Ne5?? Bd1–+ (5...Bd1 6.Kd1 Bb4–+) 0–1. Miraglia,Jorge – Woelfelschneider,Peter, email 4AMM–F, 1998.

6.0-0 f6 7.a3 Ne7 8.c4 (8.Nc3 0-0=) 8...c6 (8...dc4 9.Nc3+=) 9.cd5 cd5 10.d4 e4 11.Nfd2 Be2 12.Qe2 0-0 13.Nc3 Rc8 14.Na4 (14.Rac1 f5=) 14...b6 (14...Rc2 15.Rfc1 Qc7 16.h3+=) 15.Rac1= f5 16.g3 Nf6 17.Rc8 Nc8 18.Rc1 Ng4 19.h3 Nf6 20.Qa6 Qd7 21.Nc3 f4 22.g4 fe3 23.fe3 Ng4 24.Nd5 (24.hg4?? Qg4 25.Kh1 Qh5 26.Kg1 Qh2#) 24...Nf2 (24...Qf5 25.Qe2 Nf2–/+ (25...Qd5 26.Qg4 Ne7 27.Ne4+=)) 25.Nf4?? (25.Nf6 gf6 26.Kf2 Qf5 27.Ke2 Qh5 28.Kf2 Qh3 29.Rg1 (worse is 29.Ne4 Qf5 30.Ke1 Qe4 31.Rc8 Qe3 32.Kd1 Qf3 33.Kc1 Qe4–/+) 29...Kh8 30.Qb7 Qh2 31.Kf1=) 25...Nh3–+ (25...Bf4?! 26.Kf2 Bg5 27.Kg2 Be3 28.Rf1–/+) 26.Kg2 (26.Kh1 Nf4 27.ef4 Qh3 28.Kg1 Bf4 29.Qc4 Kh8 30.Nf1 Bc1 31.Qc1 Qg4 32.Ng3 Qg3 33.Kh1 Nd6 34.a4 Rf2 35.Qc8 Nc8 36.d5 Qg2#) 26...Qg4 27.Kf1 Nf4 (27...Bf4 28.Qc4 Kh8 29.Bc3 Bg3 30.Qf7 Rf7 31.Kg2 Rf2 32.Kh1 Rh2#) 28.ef4 Bf4 29.Ke1 Bg3# 0–1. mr5reasons1 (1625) – josueamaya (1730), gameknot.com, 2013.

6.0-0 Ngf6 7.c4 c6 (7...dc4 8.Bc4 e4–+ (8...Bb4?! 9.Qb3 Bf3 10.Bf7 Kf8 11.gf3=)) 8.c5= Bb8 9.d4 e4 10.Nfd2 (10.Ne5 Be2 11.Qe2 0-0=+) 10...h5 (10...Qc7 11.g3 h5 12.Bg4 hg4 13.Nc3=+) 11.Nc3 (11.f4!?=) 11...Qc7=+ 12.g3 Bh3 (12...Be2 13.Qe2 h4 14.b5=+) 13.Re1 h4 14.b5 hg3 15.fg3 Bf5 16.Nf1 (16.bc6 bc6 17.Rf1 Rh2 18.Qe1–+) 16...Bh3 17.a4?? (better 17.Nd2=) 17...Bf1–+ 18.Rf1 Rh2! 19.Rf4 (19.Kh2 Qg3 Mate attack) 19...Rh6 20.Qe1 Nf8 21.Kg2 (21.bc6 bc6 22.Qf2–+) 21...Ng6 22.Rf1 Nh4 23.Kg1 Qc8 (23...Qc8 24.Rf2 Qh3–+) 0–1. DEFFM – GuestHWSG, freechess.org, 2018.

6.a3 Nh6 7.c4 (7.h3 Be6=+) 7...c6 (7...dc4 8.Bc4 0-0 9.h3=+) 8.d4 (8.cd5 cd5 9.Nc3 e4=) 8...e4=+ 9.Nfd2 (9.Ne5 Be2 10.Qe2 0-0=) 9...Qg5 10.Bg4 Ng4 11.g3 (11.Nc3 Ngf6 12.g4 Qh4–/+ (< 12...Ng4 13.Rg1+/–)) 11...h5 (11...0-0 12.Nc3–/+) 12.Qe2 (12.Nc3!?=+) 12...h4–/+ 13.Nf1 (13.gh4 Rh4 14.f4 Qh5 15.cd5 cd5–/+) 13...hg3 14.fg3 Nh2 15.Rh2 Bg3 16.Rf2 Rh1 17.Kd2? (better is 17.Nc3!?–/+) 17...Bf2–+ 18.Qf2 Nb6 (18...dc4?! 19.Ng3 Rh4 20.Nc3–/+) 19.c5 Rg1 (20.cb6 Rg2–+) 0–1. Martynow,Pavel – Tyit, corr Baltikmeer IV, 1980.

6.b5 Ngf6 7.a4 0-0 (7...c5 8.0-0=+) 8.d3 (8.0-0 c5=+) 8...Re8 9.Nbd2 (9.0-0 a6=+) 9...Qe7 (9...a6 10.0-0=+) 10.0-0 Rad8 (10...e4 11.de4 de4 12.Ng5=+) 11.c4 (11.h3 Bh5=+) 11...c6 (11...e4 12.Ne1 Be2 13.Qe2=+) 12.cd5 cd5 13.e4 (13.Rc1 Rc8=+) 13...de4 (13...Nc5 14.Qb1–/+) 14.Ne4 Ne4 (14...Nd5 15.d4 ed4 16.Qd4=) 15.de4 Nf6 16.Qc2 b6 17.Ng5 Be2 18.Qe2 h6 19.Nf3 Rc8 20.h3 Nh5 21.Qe3 Bc5 22.Qb3= Ng3 23.Ne5 Nf1–/+ 24.Rf1 Qe6 25.Qf3 f6–+ 26.Ng6 Qe4 27.Qe4 Re4 28.Kh1 Kf7 29.f3 Re2 30.Bc3 Kg6 31.h4 Bf2 32.Ba1 Re1 33.Re1 Be1 34.Kg1 Bh4 35.Kh2 Kh5 36.Kh3 g5 37.g3 Bg3! 38.Kg3 Rc4 39.Bf6 Ra4 40.Bd8 Rb4 41.Bc7 Rb5 42.f4 gf4 43.Bf4 a5 44.Bd6 a4 45.Bf8 Rb3 46.Kf4 a3 47.Bg7 a2 48.Ke4 Rb1 49.Kd5 a1Q 50.Ba1 Ra1 51.Kc4 Rc1 (52.Kb5 Rb1 53.Kc6 b5–+) 0–1. metal – Sc3, caissa.com, 2006.

6.c4 dc4 7.Bc4 Ngf6 8.Qb3 (8.h3 Bh5 9.Qb3 0-0 10.d3 Bf3 11.gf3+=) 8...0-0 (8...Qe7 9.Ng5 0-0 10.f3 Bh5 11.a3+=) 9.h3 (9.d4 Bf3 10.gf3 ed4 11.Bd4+=) 9...Bh5 (9...Bf3 10.gf3 Nb6 11.d3–/+) 10.a3 (10.d3 c6 11.Nbd2–/+) 10...a5 (10...e4 11.Nd4–/+) 11.d4 (11.ba5–/+) 11...Bf3 12.gf3 ab4 13.ab4 Ra1 14.Ba1 Qe7 15.de5 Ne5 (15...Bb4?! 16.Ke2 Nh5 17.e6+=) 16.Be5 Qe5 17.Ke2 (17.Nc3!?–/+) 17...b5–+ 18.Bd3 Nd5 19.Na3 c6 (worse is 19...Nb4 20.Nb5 Nd3 21.Qd3–/+) 20.Nc2 Re8 21.Kd2 Qe7 22.Bb5 Nb4 23.Bc4 Nc2 24.Qc2 g6 25.Ke2 Qg5 26.Rd1 Bc5 27.Rd7 Re7 ½–½. Dzieniszewski,Andrzej – Ingbrandt, Jelenia Gora, 1986.

6.h3 Be6 7.a3 Qf6 8.d3 Qg6 9.Kf1 Ngf6 10.Nbd2 0-0 11.c4 c6 12.c5 Bc7 13.d4 e4 14.Ne5 (14.Ne1!?–/+) 14...Ne5–+ 15.de5 Nd7 16.f4 ef3! 17.Nf3 (17.Nf3 Bf5; 17.Bf3 Qd3; 17.gf3 Qg3) 17...f6 18.Bd3 Bf5 19.Bf5 Qf5 20.ef6 Nf6 21.Bd4 Ne4 22.Kg1 Rf7 23.Qc2 Raf8 24.a4?? (24.Qd3–+) 24...Qg6 25.Ne5 (25.Rf1 Rf3 26.Rf3 Rf3 27.Qd1–+) 25...Rf1!! 26.Rf1 Rf1 27.Kf1 Ng3 (28.Kg1 Qc2–+) 0–1. thotares (1615) – pierre (2080), internet, 2007.

7.0-0 0-0 8.c4 (8.Nc3!?+=) 8...dc4–/+ 9.h3 Bf3 10.Bf3 e4 11.Be2 b5 12.Qc2 Re8 13.Nc3 a6 14.f3 c5 15.bc5 Nc5 16.fe4 Nce4 17.Ne4 Ne4 (17...Re4?? 18.Bf6 Qe8 19.Bf3+-) 18.Bf3 (18.Rad1 Ng3 19.Bf3 Nf1 20.Ba8 Qa8 21.Rf1 f6–+) 18...Qh4 (better is 18...Nd2!? 19.Ba8 Nf1 20.Rf1 Qa8 21.Qd2–+) 19.a4 Rad8 20.d3? (better is 20.Bd4–+) 20...cd3 21.Qc6 Re6 22.Qb7 (22.Be4 Qe4 (22...Re4?! 23.ab5 Re3 24.Qc3–+) 23.Qe4 Re4 24.ab5 ab5–+) 22...Nc5 23.Qa7 (23.Qd5 Na4 24.Bd4–+) 23...Qg3 24.Bd4 (24.Bh5 Qh2 25.Kf2–+) 24...Qh2 25.Kf2 Bg3# 0–1. Neumann,Frank (1650) – Schroeder,Marcel (1980), RSS5E NoEngine–37, 2007.

7.0-0 a5 =+.

7.Nc3 0-0 +=.

7.Nc3 c6 8.0-0 (1) 8...b5 (11) 9.Ng5 Be2 10.Ne2 a5 11.Bc3 0-0 12.ba5 h6 13.Nf3=+; (12) 9.h3 Bf3 10.Bf3 a5 11.e4 d4 12.Na2 Nb6 13.Bd4=+; (13) 9.a4 a6 10.d4 e4 11.Ne5 Be2 12.Ne2 Qc7 13.ab5=+; (14) 9.Nh4 Be6 10.a4 a5 11.ab5 ab4 12.Ra8 Qa8 13.bc6=; (2) 8...0-0 9.h3 Bf3 10.Bf3 b5 11.e4 d4 12.Ne2 Nb6=+ 13.d3 =+.

7.Nc3 c6 8.h3 (1) 8...Bf5 9.0-0 0-0 10.d3 Qc7 11.Nh4 Be6 12.Nf3 a5=+ 13.b5=+; (2) 8...Bh5 9.d3 0-0 10.0-0 Qc7 11.Qd2 a5 12.b5 Rac8 13.Rfb1=+; (3) 8...Bf3 9.Bf3 b5 10.e4 d4 11.Ne2 Nb6 12.Qb1 a5 13.c3=+; (4) 8...Be6 9.0-0 0-0 10.Ng5 Bf5 11.d3 (41) 11...Bg6 12.Nf3 b5=+ 13.Na2=+; (42) 11...Qb6 12.Na4 Qc7 13.c4 =+.

7.d3 0-0 8.Nbd2 Qe7 9.c4 c6 10.h3 Bh5 11.e4 de4 12.de4 Rfd8 (12...c5 13.b5=) 13.c5= Bc7 14.Qc2 Nf8 15.Bc4 Bf3 (15...Rd7 16.Rd1=) 16.Nf3+= (worse is 16.gf3 Ne6+=) 16...Ne6 17.Be6 (17.0-0 Nd4 18.Nd4 ed4=) 17...Qe6= 18.0-0 Rd7 19.Rad1 Rad8 20.Rd7 Rd7 21.Re1 Nh5 22.Bc1 h6 23.Be3 Bd8 24.Rd1 Bc7 25.Rd3 Nf6 26.Nd2 Rd3 27.Qd3 Kf8 28.f3 Ke7 29.Nc4 Ne8 30.Bf2 g6 (30...Kf8 31.Ne3+=) 31.Be3+/– h5 32.g4 (32.a4!?+/–) 32...hg4= 33.hg4 Ng7 34.Bh6 Ne8 35.Bg5 Kf8 36.Bc1 Ke7 37.Kg2 Ng7 (37...b5 38.cb6 ab6 39.a4=) 38.Bh6 Ne8 39.Bg5 Kf8 40.a4 a6 (40...Kg7 41.Be3+=) 41.Kf2 f6 42.Be3 Ke7 43.Qe2 Ng7 44.Bh6 Ne8 45.Bc1 Ng7 46.Ne3 (46.Ke1 Ke8+=) 46...Qd7 (46...Qb3 47.Qc4 Qa4 48.Qg8+=) 47.Qd2 Qd2 48.Bd2 Ne6 49.Bc3 (49.a5 Nd4+=) 49...Ng5 (49...b6 50.cb6 Bb6 51.Bd2=) 50.Nc4+= Ke6 51.Bd2 Nf7 52.Ke2 f5 53.gf5 gf5 54.Kd3 Kf6 55.Na3 Nd8 56.Be3 Ne6 57.b5 Ba5 58.ba6 ba6 59.Nc2 Ng5 60.Bg5 Kg5 61.Ne3 fe4? 62.Ke4+- Bb4 63.Ke5 Bc5+/– 64.f4 Kg6 65.Nc4 Bb4 66.Ke6 Kg7 67.Ne5 c5 68.f5 Bc3?? 69.f6 1–0. Krivoshapko,Alexander – Antipova,Anastasia, 2012.

7.d3 a5 8.0-0 –/+.

7.d3 a5 8.b5 +=.

7.d4 e4 8.Ne5 Be2 9.Qe2 0-0 10.c4 c6 11.Nd2 Re8 12.Nd7 Nd7 13.c5 Bc7 14.a4 f5 15.g3 Nf6 16.Nb3 Qd7 17.Bc3 Kf7 18.b5 g5 19.h4 h6 20.Ba5 f4 21.hg5+= hg5 22.gf4 gf4 23.0-0-0 f3=+ 24.Qf1 b6 25.Bc3 cb5 26.ab5= Rh8 27.c6 Qg4 28.Rg1 Qh3 29.Qe1 a6–/+ 30.ba6 Ra6 31.Kb2 Qe6 32.Ra1 Ra1 33.Qa1 Qc6 34.Rc1 Qa8 35.Be1 Qa1 36.Na1 Bd8 37.Rc6 Rh2 38.Nc2 Ng4 0–1. Pandurevic,M (2270) – Kovacevic,A (2550), Open Rijeka CRO (2), 2007.

7.h3 Bh5 8.d4 Bf3 9.gf3 e4 10.f4 a6 11.c4 c6 12.c5 Bc7 13.a4 Nf8 14.Nd2 Ng6 15.Nb3 Nh4 16.Bc3 Qe7 17.b5 ab5 18.ab5 Ra1 19.Qa1 0-0 20.Ba5 Bb8 21.Bb6 Nd7 22.Qa5 Nf3 23.Bf3 ef3 24.Bc7? Nc5–/+ 25.Nc5 Bc7 26.Qa7 b6 27.Na6? Qe4 28.Kd2 Bf4! 29.bc6?? Be3 30.fe3 f2 31.Rf1 Re8 32.Qd7 Qe3 33.Kc2 Qe2 34.Kb3 Qc4 (35.Kb2 Re2 36.Kb1 Qb3 37.Ka1 Ra2#; 34...Re3 35.Ka4 Qa6 36.Kb4 Qc4#) 0–1. Herrera,Andres (2125) – Cerda,Guillermo (2205), CHI–ch, 2004.

8.0-0 0-0 9.Ng5 Be2 10.Qe2 (1) 10...a5 11.b5 a4 12.d3 Qe7 13.Rfd1=+; (2) 10...b5 11.e4 d4 12.Na2 c5 13.c3 =+.

8.0-0 Bf5 9.d3 0-0 10.Na4 Qe8 11.c4 dc4 12.dc4 Rd8 13.c5 =.

8.Ra2 0-0 9.0-0 Re8 10.Ng5 Be2 11.Qe2 c5 12.bc5 Nc5=+ 13.a4 =+.

8.Rb1 (1) 8...b5 9.h3 Be6 10.d3 c6 11.Ng5 0-0 12.Ne6 fe6 13.Na2=+; (2) 8...Qe7 9.h3 Be6 10.0-0 0-0 11.Ng5 Bf5 12.d3 e4=+ 13.de4=+; (3) 8...0-0 (31) 9.0-0 b5 10.Ng5 Bf5 11.d3 h6 12.Nf3 c6 13.Qd2=+; (32) 9.h3 Be6 10.0-0 b5 11.Ng5 Bf5 12.d3 c5 13.bc5 =+.

8.Rc1 0-0 (1) 9.h3 (11) 9...Bf5 10.0-0 Qe7 (111) 11.Nh4 Be6 12.Nf3 c6–/+ 13.Ra1–/+; (112) 11.d3 a5 12.Nb5 ab4 13.Nd6=+; (12) 9...Be6 10.0-0 Qe7 11.Ra1 b5 12.Ng5 c5 13.Ne6=+; (2) 9.0-0 a5 10.b5 Qe7 11.a4 Nb6 12.h3 Be6 13.Ng5 =+.

8.Rc1 b5 (1) 9.0-0 0-0 10.Ng5 Be2 11.Qe2 c5 12.Qd3 Nb6 13.bc5 –/+; (2) 9.h3 Bf3 10.Bf3 c6 11.e4 d4 12.Na2 Nb6 13.d3 =+.

8.Rc1 b6 9.h3 Be6 10.0-0 0-0 11.b5 Ne4 12.ba6 Nc3 13.Bc3 =+.

8.d3 (1) 8...Rc8 9.0-0 0-0 10.h3 Bf5 11.Nd5 Nd5 12.e4 Bh3= 13.ed5=; (2) 8...b6 9.0-0 0-0 10.h3 Bf5 11.Nd5 Nd5 12.e4 Bh3=+ 13.ed5=+; (3) 8...0-0 9.0-0 (31) 9...Rc8 10.h3 Bf5 11.Re1 Re8 12.Nd5 Nd5=+ 13.e4=+; (32) 9...Qe7 10.h3 Be6 11.Ng5 b5 12.d4 ed4 13.ed4 =+.

8.h3 Be6 9.d3 0-0 (1) 10.Ng5 c5 11.bc5 Nc5 12.d4 Ncd7=+ 13.de5=+; (2) 10.0-0 b5 11.Ng5 Qe7 12.d4 Rad8 13.Ne6 =+.

8.0-0 0-0 9.h3 Bf3 10.Bf3 e4 11.Be2 c6 12.Nd2 ed3 13.Bd3 Be5 14.Bd4 a5 15.c3 b6 16.Nf3 Bd6 17.Bf6 Nf6 18.Qc2 g6 19.Rfe1 Rfe8 20.Qb2 Rab8 21.Reb1 c5 22.b5 c4 23.Be2 Ne4=+ 24.Rf1 Rbd8 25.a4 Bc7 26.Rad1= Qf6 27.Rd4=+ Bd6 28.Re4? Re4 29.Rd1–/+ Bc5 30.Qc2 Kg7 31.Nd2?? Ree8 32.Bf3 h5 33.Nf1 Re5–+ 34.Nh2 Rd6 35.Qd2 Rf5 36.Qe1 Qg5 37.Qe2 Re5 38.Nf1 Rf6 39.Kh1 Qh4 40.Rd5 Rd5 41.Bd5 Rf2 42.Qc4 Qf6 43.Bf3 Rc2 44.Qe4 Rc3 (45.Kg1 Qe6 46.Qe6 fe6–+; 44...Rc1 45.Qd3–+) 0–1. Pignataro,Louis (1800) – Boudre,Jean Pierre (2370), St Affrique op 9th, 2001.

8.Nc3 0-0 +=.

8.c4 dc4 9.dc4 0-0-0 =+.

8.Nbd2 0-0-0 9.c4 e4 10.c5 (10.de4 de4 11.Nd4 Ne5 12.0-0 c5 13.Nb5 Kb8 14.Nd6 Qd6 15.Be5 Qe5) 10...ef3 (10...Bc5 11.bc5 ef3 12.gf3 Bf5 13.d4 Nb8 14.Rg1 Rhg8 15.Qa4 Nc6) 11.gf3 Bh3 (11...Be5 12.Be5 Ne5 13.fg4 d4 14.e4 g5 15.h3 Kb8) 12.cd6 Qd6 13.f4 (13.Rg1 g6 14.f4 Kb8 15.Nf3 Rhe8) 13...h6 (13...Rhe8 14.Rg1 g6 15.Nf3 Bg4) 14.Nf3 (14.Rg1 Rhg8 15.Rc1 a6) 14...Bg2 (14...Rde8 15.Rg1 g6) 15.Be5 (15.Rg1 Bf3 16.Bf3 g6=) 15...Qa6 (15...Ne5!? 16.fe5 Qe6+=; 15...Qe7+=) 16.Rg1= Bf3 (16...Ne5? 17.Ne5 (17.fe5?! Bf3 18.Bf3 Ne8=) 17...Bh3 18.Nf7+-) 17.Bf3 g5 (17...Ne5 18.fe5 Ne8 19.Qb3=) 18.Qc2 Ne5 19.fe5 Ne8 20.d4 Ng7 21.a4 Ne6 (21...Kb8 22.Rc1 Qb6 23.Qc3+=) 22.Be2 Qb6 23.Rb1 c6 24.Bd3 (24.a5 Qc7+/–) 24...Kb8 25.Qc3 f6 (25...Rc8 26.Rc1=) 26.Bf5 (26.ef6 Rdf8+=) 26...Ng7= 27.Bd3 (27.Bg6 fe5 28.de5 c5=) 27...fe5+= 28.de5 d4 29.ed4 Qd4 30.Qd4 Rd4 31.Rg3 Nh5 32.Re3+= Nf4 33.Kd2 Rhd8–+ 34.Rb3 a5! 35.ba5 c5 36.a6 c4 37.Rb7 Ka8 38.Rc7 Rd3 39.Rd3 cd3 40.Rc6 h5 41.Rd6 Re8 42.e6 Ka7 43.f3 Ne6 44.Kd3 Nf4 45.Kc4 Re2 46.Kb5 Rb2 47.Ka5 Rh2?? 48.Rd7= Kb8 49.a7 Ka8+= 50.Rg7?? Ne6 51.Re7? Nd8 52.Rc7? Rd2 53.Rh7 h4 54.Kb6 Rd6 55.Kc7 Nb7 56.Rh5 Rg6 57.f4 gf4 58.Rh4 Rf6 59.Rh2 f3 60.Rf2 0–1. Saradjen,Janko (2200) – Guid,M (2210), ch–SLO, Bled SLO, 2003.

8.Nbd2 a5 9.b5 0-0 10.c4 (10.0-0 Bf5+=) 10...c6 (10...e4 11.de4 de4 12.Nd4–/+) 11.a4 (11.h3!? Bf5 12.0-0+=) 11...dc4–/+ 12.Nc4 Bb4 13.Kf1 e4 (13...cb5 14.ab5 e4 15.de4 Ne4 16.Kg1–/+) 14.Nd4+= Be2 15.Qe2 cb5 16.Nb5 Nc5 (16...ed3!? 17.Qd3 Rfd8–/+) 17.de4= Nce4 (17...Nfe4 18.f3 Ng5 19.Nd4=) 18.f3 Nc5 19.g3 (19.Be5 Nb3 20.Rd1 Rfd8=) 19...Rad8 (19...Rfd8 20.Kg2=) 20.Nd4 (20.Kg2 Rd5 21.Bd4 Rfd8+=) 20...Rd5 (20...Nd5!?+=) 21.Kg2 (21.e4 Rd7 22.Kg2 Rfd8+=) 21...Rfd8 (21...Ne6 22.Rhd1+=) 22.Rhd1 Ne6 23.Nb6?? (better is 23.Ne6 Qe6 24.Bf6 Qf6 25.Rd5 Rd5 26.Rd1 Rd1 27.Qd1=) 23...Rd4!–+ 24.ed4?? Nf4!! (24...Nf4 25.Kg1 Qe2 26.gf4 Nh5 27.Nd5 Rd5 28.Bc1 Qd1 29.Kg2 Qe2 30.Kg1 Rd4 31.Be3 Rd2 32.Bd2 Bc5 33.Be3 Be3 34.Kh1 Qf3#) 0–1. Saradjen,Janko (2165) – Perunovic,Miodrag (2340), Portoroz op, 2004.

8.Nbd2 a5 9.c4 c6 10.b5 0-0 11.cd5 cd5 12.0-0 e4 (12...Rfc8 13.h3 Bf5 14.e4 de4 15.Nh4+=) 13.Ne1 Be2 14.Qe2 Ne5 15.de4 de4 16.Nc2 Neg4 17.h3 Bh2 18.Kh1 Be5 19.Nd4 Nh6 20.Rfd1 Rfe8 21.Nc4 Bd4 22.Bd4 Nf5 23.Bb2 a4 24.Nb6 Ra5 25.Nd5 Nd5 26.Rd5 g6 27.Rad1 b6 (27...Raa8 28.Rd7 Qh4 29.Qc4+-) 28.Qg4 (28.Qc4 Ra7+-) 28...h5 29.Qf4 Qe6 (better is 29...f6+-) 30.Re5 Qc8 31.Rc1 Qd7 (31...Qb8 32.Rf5 Qf4 33.Rf4 f5+-) 32.Rc7 (32.Re4?! Rb5 33.Re8 Qe8 34.Qa4 Kf8+-) 32...Qd1 33.Kh2 Qd8 34.Rf5 gf5 35.Qg3 (35.Qg3 Qg5 36.Qg5 Kh7 37.Rf7#) 1–0. Saradjen,Janko (2155) – Doric,Nenad (2325), Lucija Domen op 1st, 2006.

8.Nbd2 c6 9.c4 0-0 10.Rc1 Rad8 11.0-0 Rfe8 12.Qb3 (12.c5!? Bc7 13.e4=) 12...e4+= 13.Nd4 Be2 (13...Qe5 14.g3 Be2 15.Ne2–/+) 14.Ne2+= Bh2 (better is 14...Ne5 15.c5 Bc7 16.Be5 Qe5+=) 15.Kh2+/– Ng4 16.Kh3 Qg5 (16...ed3 17.Nd4 Nf2 18.Rf2 Qe3 19.Rf3 Qd2 20.Nf5–+ (20.Rd3?? Qh6 21.Kg3 Nf6–+)) 17.Nf4 Nde5 18.Be5 Re5 19.Qd1?? (19.de4 de4 20.Ne4 Re4 21.Rcd1–/+) 19...Qh6 20.Kg3 Qh2 21.Kg4 f5 (21...f5 22.Kg5 Qh6#) 0–1. Castro Couceiro – Gonzalez de la Torre (2390), Ortigueira op 2nd, 2003. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e5 5.Be2 Bd6 6.a3 Ngf6 7.d3 Qe7)

6.Qf3 c6 7.a3 Ngf6 (7...Bd6 8.Be2=) 8.c4 (8.Be2 Bd6 9.Qg3 0-0=+) 8...Bd6 9.c5 (9.d3 dc4 10.dc4 e4=+) 9...e4 (9...Bc7 10.d3=+) 10.Qd1= Bc7 (10...Be5 11.d4 ed3 12.Nc3=+) 11.d4 ed3 (11...0-0 12.Be2=) 12.Bd3 Ne5 13.Be2 0-0 (13...Qe7 14.Nd2=) 14.0-0 b6 15.cb6 (15.Bd4 bc5 16.Bc5 Bd6=) 15...ab6 16.Nd2 (16.Qc2 Re8=) 16...Qd6 17.Be5 Qe5 18.Nf3 Qe7 19.Qc2 c5 20.bc5 bc5 21.Bb5 Rfb8 (21...Rfc8 22.Rfb1=+) 22.a4 Rb6 (22...c4 23.Rfd1=) 23.Rfb1= Ne4 (23...Ra5 24.Rb2=+) 24.a5 Rg6 25.Bd3 f5 26.Rb7 (26.Rb5!?=; 26.Rb5!?=) 26...Bh2!–/+ 27.Nh2 (27.Nh2 Qb7 Discovered attack; 27.Kh2 Qb7 Discovered attack) 27...Qb7 28.Be4 fe4 29.Qc5 Rb6! 30.Nf1 (30.ab6 Ra6 Double attack (30...Ra1 Pinning; 30...Ra1 Deflection; 30...Ra6 Decoy); 30.Qb6 Qb6 Combination) 30...Rb5 31.Qd6 Qa6 (31...Rba5? 32.Ra5 Ra5 33.Qd8 Kf7 34.Qa5+-; 31...Rba5? 32.Ra5 Ra5 33.Qd8 Kf7 34.Qa5+-) 32.Qd7 Ra5 33.Rc1 (33.Ra5 Qa5 34.Qe6 Kh8–+) 33...Rf8 34.Ng3 (34.Nh2 h5–+) 34...Qf6 35.Kh2 h6 (35...Qf2 36.Rf1 Qf1 37.Nf1+-; 35...Qf2 36.Rf1 Qf1 37.Nf1+-) 36.Nh5? (36.Rc7–+; 36.Rc2–+) 36...Qe5 37.Ng3 Ra2 (37...Ra2 38.Rc8 Raf2 39.Rf8 Rf8–+) 0–1. Partikas,Valentinas A (2325) – Reichert,Thomas (2200), ICCF corr W–24ch sf12, 2000. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e5 5.h3 Bf3)

6.Qf3 c6 7.c4 Ngf6 8.cd5 cd5 9.Bb5 Bd6 10.0-0 0-0 11.Nc3 Nb6 (worse is 11...Bb4 12.Nd5 Bd6 13.d4=) 12.a3 Rc8 13.Rac1 a6 14.Be2 Re8 Black prepares e4 15.g4 e4 16.Qg2 Bb8 17.f3 d4 (17...Nc4!? 18.Bc4 Rc4=) 18.Ne4+= Ne4 19.fe4 de3 (19...Rc1!? 20.Rc1 de3+=) 20.Qf3+/– (20.de3?! Rc1 21.Bc1 Be5=) 20...Qe7 21.d3 Rc1 22.Bc1 Qc7 23.Qg2 Nd7 24.Be3 Qc3 25.Qf2 f6 26.Qf5 Ne5? (better is 26...Qc7 27.Qd5 Kh8+/–) 27.Rc1+- Qb2 28.Rc8 Rc8 29.Qc8 Kf7 30.Kf1 (30.Qb8 Qe2 31.Qb7 Kg6–/+; 30.Qb7 Kg6 31.Kf1 Qb1 32.Kf2 Nd3 33.Bd3 Qd3 34.Qb8 Qc2 35.Kf3 Qd1 36.Kg3 Qe1 37.Bf2 Qe4+-) 30...Bd6 31.Qb7 Kg6 32.Qa6 Qb1 (32...Qa1 33.Kg2 Qe1 34.d4+- (34.Qd6?! Qe2 35.Bf2 Qf3 36.Kg1 Qh3=)) 33.Kf2 Nf7 (33...Qh1 34.d4 (34.Qd6?! Qh2 35.Kf1 Qh3 36.Ke1 Qe3+-) 34...Qh2 35.Ke1 Bb4 36.ab4 Qh3 37.Kd2 Ng4 38.Bf4+-) 34.h4 (34.Qc8 Ne5 35.d4 Qa2 36.de5 Be7+-) 34...h6 35.Qb7 (35.Bc5 Bh2 36.Kg2 Qe1 37.Kh2 Qe2 38.Kg3 Ne5 39.h5 Kh7=) 35...Ne5 (35...Bh2 36.Kg2 Qa2+-) 36.Qd5 (36.d4 Qh1 37.Qc8 Qh4 38.Kg2 Qe1+-) 36...Qh1 37.h5 (37.Qd6 Qh4 38.Kg2 Qe1+=) 37...Kh7 38.Qd6 Qh2 39.Kf1 Qh3 40.Ke1 Qe3 41.Kd1 Qg1 42.Kd2 Qa1? (42...Qf2 43.b5 Nf3 44.Kc3 Qe2+=) 43.d4?? (better is 43.Qc7 Qa3 44.Qc5+-) 43...Qb2= 44.Kd1 Qb1 45.Kd2 Qb2 46.Ke3 Qc1 47.Kf2 Qf4 48.Kg2 ½–½. Pitkaaho,Aki (2195) – Terasti,Pasi (2090), Oulu We Sh, 2004. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e5)

7.a3 a5 8.b5 Bd6 9.a4 Qe7 10.d3 (10.h4 e4 11.Qh3 c5+=) 10...0-0-0 (10...0-0!?–/+) 11.Nd2+= h5 12.Qd1 (12.Be2 e4 13.Qf5 Bb4=) 12...Kb8+= 13.Be2 g5 14.Nb3 (14.0-0 g4 15.h4 g3+=) 14...b6 (14...g4 15.c3+=) 15.g3 (15.h4 g4=) 15...Nc5 (15...Nf8 16.0-0+=) 16.Nd2 (16.h4 g4=) 16...Ne6 Black prepares d4 17.c4 (better is 17.h4!?=) 17...d4–/+ 18.ed4 Nd4 19.Bd4 ed4 20.Kf1 g4 21.Nb3 Qe5 22.Ra2 (22.Rc1 h4 23.c5 hg3 24.cd6 Rd6 25.Bg4 Ng4 26.Qg4 Rg6 27.Nd4 Rg4 28.Nc6 Kb7 29.Ne5 g2 30.Ke2 gh1R 31.Rh1 Ra4 32.Nf7 Ra2 33.Ke3 Re8 34.Kd4 Rf2–+) 22...Bb4 (better is 22...h4!? 23.Bg4 hg3–+) 23.Kg2–/+ Bc3 24.Rc2 Qf5 25.Nc1 (25.Qc1 Rhg8–/+) 25...Rde8 (25...gh3 26.Rh3 h4 27.Qh1 hg3 28.fg3–/+) 26.Na2 Bb4 (26...gh3!? 27.Rh3 h4 28.Nc3 hg3 29.Rg3 dc3–+) 27.Nb4+= ab4 28.a5 b3 (28...ba5 29.Ra2+=) 29.Rb2 ba5 30.Rb3 (30.Qb3?? Re2 31.Re2 Qf3 32.Kg1 Qe2–+) 30...gh3 31.Rh3 Ng4 (31...h4 32.gh4 (32.Rh4?? Rh4 33.gh4 Rg8 34.Kf1 Qh3 35.Ke1 Rg1 36.Kd2 Rd1 37.Kd1 Ne4–+) 32...Reg8 33.Rg3 Rh4 34.Rg8 Ng8 35.Bf3–+) 32.Qf1 (better is 32.Qe1!? a4 33.Ra3+=) 32...h4+= 33.Bg4 (33.Rh4 Rh4 34.Bg4 Qg4–+) 33...Qg4 34.b6 c6 35.Qh1 (35.Rb2 hg3 36.Rg3 Qh4–+) 35...Reg8 (35...Re3! 36.Rb1 Qf3 37.Kg1 Qh1 38.Kh1 Rd3+=) 36.Ra3= Rh5 37.Ra2 Rgh8 (37...Rgg5!? 38.Qe1 hg3 39.Qe8 Qc8 40.Qc8 Kc8 41.Rh5 Rh5 42.Kg3 Kb7=) 38.f3+= Qe6 0–1. Mas,Hafizulhelmi (2315) – Neelotpal,Das (2460), 8th Penang Heritage City International, 2016. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e5 5.h3 Bf3)

7.a3 a5 8.b5 Bd6+= 9.Nc3 e4 10.Qd1 0-0 11.d4 ed3 12.cd3 Nc5 Black prepares the advance a4 13.Ne2 (13.Be2 Qe8=) 13...Ne6 (13...a4!?–/+) 14.g3= Nd7 (14...c6 15.bc6 bc6 16.Bg2=) 15.Bg2 Nb6 16.0-0 a4 17.Nd4 Re8 18.Nf5 Bf8 19.Qg4 Now all is on g7 19...g6 20.Nd4 Nc5 21.Rfd1 Bg7 22.Rab1 h5 23.Qf4 Qe7 24.h4 Rad8 25.Rbc1 Qd6 (25...Rc8 26.Bc3=) 26.Ba1 (26.Qd6 cd6 27.Bc3 Ra8+=) 26...Qf4 (26...Be5!? 27.Qg5 Bd4 28.Bd4 Nb3=) 27.gf4+= Bf8 28.Bc3 (28.Bb2 Bd6+=) 28...Bd6 (28...Rc8 29.Bb2+=) 29.Bb4 Nb3 30.Nb3 (30.Bd6!? cd6 31.Nb3 ab3 32.Rb1+/–) 30...Bb4= 31.ab4 (worse is 31.Rc7 Re7 32.Re7 Be7–/+) 31...ab3 32.Rb1 d4 33.Rb3 de3 34.fe3 Re3 35.Kf2 Re6 36.Bb7 Rd4 37.Kf3 Nc4 38.Kg3? (better is 38.Rc3 Re3 39.Kg2+=) 38...Nd6–+ 39.Bf3 Nf5 40.Kh2 Rf4 41.Be4 Rh4 42.Kg1 Nd4 (42...Ng3 43.Bf3 Rf6 44.b6 cb6 45.Kg2–+) 43.Rb2 Nb5 (43...Ree4 44.de4 Nf3 45.Kg2 Rh2 46.Kf3 Rb2 47.Rd4–/+) 44.Rc1 Rg4 45.Kh2 Re5 46.Rc5 Rgg5 47.Rc6 Kg7 48.Rf2 f5 49.Bg2 (49.Bf3 Kh6–+) 49...Rg4 50.Bh3 Rd4 51.Bf1 (51.Rg2 Rd6 52.Rgc2 Kf6–+ (worse is 52...Rd3 53.Bf1 Rd7 54.Rg2–+)) 51...Rb4 52.d4 Rd4 53.Bb5 (53.Rb2 Nd6–+) 53...Rb5 54.Re2 (54.Rc7 Kh6 55.Ra2 Rb3–+) 54...Kh6 55.Rg2 Rh4 (55...Rh4 56.Kg1 Rb1 57.Kf2 Rg4–+) 0–1. Gritsayeva,Oksana (2340) – Girya,Olga (2475), Vladivostok RUS, 2014. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e5)

7.a3 a5 8.Nc3 ab4 9.ab4 Ra1 10.Ba1 c6 +=.

7.a3 Bd6 8.Nc3 c6 9.e4= d4 10.Ne2 Nb6 11.Ng3 Na4 12.Bc1 b5 13.c4 a6 14.c5 Bc5 (better 14...Bc7!?=) 15.bc5+/- Nc5 16.h4 0-0 17.h5 h6 18.Rb1 Nh7 19.d3 Ng5 20.Qg4 Nce6 (20...Qa5 21.Bd2 Qa3 22.Bg5 hg5 23.Qg5 Qc3 24.Qd2+=) 21.Nf5 (21.Be2 Qa5 22.Kf1 Qc3+/-) 21...c5 (21...Qa5 22.Bd2 Qa3 23.Qg3+=) 22.g3 Kh8 23.f4 Nh7 (better 23...ef4!? 24.gf4 Nh7+/-) 24.fe5+- Nhg5 25.Be2 c4 (25...Qa5 26.Kf1+-) 26.0-0 Qc7 27.Bf4 (27.a4 cd3 28.Bd3 Nc5 29.Bg5 hg5+-) 27...Qc5 (27...cd3 28.Bd3 Qc3 29.Rbd1+/-) 28.Nd6 (28.Ra1!? cd3 29.Rfc1 Qb6 30.Bd3 Qa5+-) 28...Qa3+/- 29.Bc1 (29.Ra1 Qc5+/-) 29...Qc5 30.Rf5 c3 31.Bg5 (31.Bf4 Qa3 32.Rf1 Nf4 33.gf4 c2 34.fg5 c1Q 35.Rc1 Qc1 36.Kg2 Ra7+-) 31...Ng5+= 32.Rg5 (32.Bf1 f6 33.Qf4 Ne6 34.ef6 Rf6 35.Rc5 Rf4+/-) 32...hg5= 33.Qg5 f6 34.Qg6 fe5 35.h6 Ra7?? (better 35...Qc7 36.Nf5 gh6 37.Qh6 Qh7+=) 36.Kg2+- gh6 (36...Re7 37.hg7 Rg7 38.Rh1 Kg8 39.Qe6 Rff7+-) 37.Qh6 Kg8 38.Rh1 Qd6 39.Qd6 Raf7 40.Qg6 (40.Qg6 Rg7 41.Qe6 Rff7 42.Bh5 Kf8 43.Bf7 Rg4 44.Rh7 Rg3 45.Kg3 b4 46.Qd6) 1-0. Maris,Iv (2395) - Reinderman,D (2580), Dutch Open (7), 2019.

7.a3 Bd6 8.Nc3 e4 9.Qd1 +=.

7.a3 Bd6 8.c4 e4 9.Qf5?? (better is 9.Qd1=+) 9...g6–+ 10.Qg5 h6 11.Bf6 (11.Qd5 Nd5 12.Bh8–+) 11...Nf6 (11...hg5?! 12.Bd8 Rd8 13.cd5=) 12.Qh4 (12.Qd5 Nd5 13.cd5 Be5 14.Bb5 Ke7–+) 12…g5 (13.c5 gh4 14.cd6 Qd6–+) 0–1. McGhee – hpoli, ChessWorld.net, 2004.

7.a3 Bd6 8.d3 c6 9.Nc3 0-0 10.Be2 Qe7 11.0-0 h6 12.e4 d4 13.Nb1 (13.Na2 a5 14.c3 ab4 15.Nb4 Nc5 16.cd4 ed4 17.Bd4 Nb3 18.Bf6 gf6+=) 13...a5–/+ 14.ba5 Ra5 15.Bc1 Rfa8 16.g4 (16.Nd2!?–/+) 16...Nf8 17.g5 hg5 18.Bg5 N8h7 19.Bc1 (19.Bh4 Rb5–+) 19...Nd7 20.Kh2 Ndf8 21.Rg1 Ne6 22.Nd2 b5 23.Qg3 Qf6 24.Nf3 Kf8 (24...Ra4!?–/+) 25.h4 Ke7 (25...Re8 26.Ng5 Nhg5 27.hg5=) 26.Ng5 (26.h5!?+=) 26...Nhg5–/+ 27.hg5 Rh8 28.Kg2 Nf4 29.Kf1 (29.Bf4 Qf4 30.Qf4 ef4–/+) 29...Qg6 30.Qg4 Qe6 (30...Ne2 31.Ke2 Qe6 32.Qe6 Ke6 33.Bd2 Ra3 34.Ra3 Ba3 35.Ra1–/+) 31.Bd2 (31.Qe6 fe6 32.Bg4 Kd7–/+) 31...Ne2 32.Qe6 Ke6 33.Ke2 Ra4 (33...Ra3 34.Ra3 Ba3–/+) 34.Rh1 (better is 34.Bb4!?–/+) 34...Rh1–+ (34...Ra3?! 35.Ra3 Rh1 36.Ra6–/+) 35.Rh1 Ra3 36.Rh8 Ra7 37.Re8 Kd7 38.Rh8 g6 39.Rh7 (39.Rh4 Ra2 40.Kd1 c5–+) 39...Ke6 (39...Ke7 40.Rh4–+) 40.Rh8 (40.Rh4 Ra2 41.Kd1 c5–+) 40...c5 (better is 40...Ra2 41.Kd1 Ra1 42.Ke2–+) 41.Re8? (41.Rh1–+) 41...Kd7 42.Rh8 Ra1 (42...Ra2 43.Kd1 c4 44.dc4 bc4 45.Rh3–+) 43.f4 (43.Rh3 c4 44.dc4 bc4–+) 43...ef4 44.Rh4 (44.Rh3 Rg1–+) 44...Ra2 45.Bf4 (45.e5 Be5 46.Bf4 Bf4 47.Rf4 Rc2 48.Kd1 Rg2–+) 45...Rc2 46.Kf3 (46.Kd1 Rf2 47.e5 Be7–+) 46...Bf4 47.Rf4 Ke7 48.e5 Ke6 49.Rf6 Ke5 50.Rf7 Rd2 51.Re7 (51.Rf6 Rd3 52.Kf2 c4 53.Rg6 Rd2 54.Kf1 c3–+) 51...Kf5 (51...Kf5 52.Rf7 Kg5–+) 0–1. Korba,Roman (2230) – Huschenbeth,Niclas (2455), Hamburg St Pauli op–A, 2010. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e5 5.h3 Bf3 6.Qf3 Ngf6)

7.a3 e4 8.Qd1 Bd6 9.d3 0-0 10.Nd2 (10.de4 de4 11.Nd2 Be5 12.Be5 Ne5=+) 10...Be5 (10...a5 11.b5=+) 11.Be5= Ne5 12.Nb3 (12.d4 Ned7=) 12...ed3 (12...b6 13.Be2=+) 13.cd3 (13.Bd3 Re8=) 13...c6 (13...Qe7 14.d4 Nc4 15.Bc4 dc4 16.Na5=) 14.Be2 (14.d4 Nc4=) 14...Nfd7 (14...Re8 15.d4 Ng6 16.0-0=) 15.d4 Ng6 16.Qc2 (16.Bd3 Re8+=) 16...f5 17.Bd3 Qg5 18.g3 Rae8 (18...Rf7 19.b5=; 18...Rab8 19.Rc1+=) 19.0-0-0 (19.Na5 f4 20.Bg6 hg6 21.gf4 Qf4 22.Qe2+- (22.Nb7 Re3 23.fe3 Qe3 24.Kd1 Qd4 25.Qd2 Qa1 26.Qc1 Qa2–+); 19.Na5!?+=) 19...b6 (19...Nb6 20.Nc5 Rf7 21.Rdg1=) 20.Kb1 (20.Qc6?? Rc8 21.Qc8 Rc8 22.Kd2 Nf6–+; 20.g4 f4 21.h4 Nh4 22.Bh7 Kf7=) 20...Rc8 (20...Rf6 21.Rdg1=) 21.h4 (21.g4 Nh4+=) 21...Qf6 22.Qb2 (22.h5 Ne7=) 22...Ne7 (22...Qd6 23.h5 Ne7 24.Rc1=) 23.Rc1 Qd6 (23...a5 24.ba5 ba5 25.Qc3=) 24.Ka2 (24.h5 h6=; 24.h5 h6=) 24...a5=+ 25.ba5 c5 26.dc5 bc5 27.Bb5 (27.Rhd1 Ne5 28.Be2 c4=+) 27...Nf6 28.Rhd1 Rc7 29.Rc2 (29.Qe2 Ne4–/+) 29...Rfc8 (29...Rb8 30.a4–/+) 30.Rdc1 (30.a6 Ne4–/+) 30...Ne4 31.f3 Ng3 32.Rg2? (better 32.Rc5 f4 33.Rc7 Rc7 34.Rc7 Qc7 35.Nd4=; better 32.Rc5 f4 33.Rc7 Rc7 34.Rc7 Qc7 35.Nd4=) 32...f4 (32...Rb8 33.Rcg1 Ng6 34.Rg3 Rb5 35.h5–+) 33.ef4 Ngf5 Black intends d4. Black prepares the advance d4 (33...Qf4 34.Qd2 Qd6 35.a6–+; 33...Qf4 34.Qd2 Qd6 35.Rd1–+) 34.Rcg1 (34.Qe5 c4 35.Rg7 Kf8 36.Re7 cb3 37.Kb2 Rc1 (worse 37...Qe7 38.Qf5 Qf7 39.Qf7 Kf7 40.Rc7 Rc7 41.f5=) 38.Re8 Re8 39.Qe8 Kg7 40.Kc1 Qa3 41.Kd1 Qa1 42.Ke2 Qb2 43.Kf1 Qc1 44.Kf2 Qd2 45.Kg1 Qf4 (45...Nh4? 46.Qe7 Kg8 47.Qh4+-; 45...Qa5 46.Qe5 Kf8 47.Qf5 Kg7 48.Qe5 Kf8 49.Qd6 Kg7 50.Qe7 Kg8 51.Bd7 Qb6 52.Kh1+-) 46.Qd7 Kh6 47.Qe6 Kh5 48.Qd5 Kh4 49.Qb3 Qg5 50.Kf2 Qd2 51.Kg1 Qe1 52.Bf1 Qa5 53.Qc4 Kg5 54.f4 Kg4=; 34.Qe5 Qh6–/+) 34...d4 (34...Ng6!? 35.Bd3 Ngh4 36.Bf5 Nf5 37.Qe5 Qe5 38.fe5–+; 34...Ng6!? 35.Rg5 Rf8 36.Bd3 Ngh4 37.Bf5 Nf5 38.Qe5 Qe5 39.fe5–+) 35.Bc4 Kh8 36.Nd2 (36.Qb1 Rf8–+) 36...Qf4 37.Rg4 (37.Rg5 Ra8–+ (37...Qh4?! 38.Be6–/+)) 37...Qh6 38.f4 (38.Rg5 Ra7–+ (38...Qh4?! 39.Be6–/+); 38.Rg5 Ra8–+ (worse 38...Qh4 39.Be6–/+)) 38...Nc6 (38...Nh4?! 39.Rh1 Nef5 40.Nb3–/+; 38...Nh4?! 39.Rh1 Nef5 40.Nb3–/+) 39.Rg5 Ne3 (39...Nh4?! 40.Rh1 Na5 41.Qb5 Nc4 42.Nc4–/+; 39...Nh4?! 40.Rh1 Na5 41.Qc1 Nc4 42.Nc4–/+) 40.Rc5 Qf4 41.Rc1 Ne7 (41...Nc4 42.R5c4 Qf7 43.Nb3–/+; 41...Nc4 42.R5c4 Qf7 43.Nb3–/+) 42.Rc7–/+ Qc7 (42...Rc7 43.Qb8 Nc8 44.Be6 Rc2 45.Rc2 Qb8 46.Rc8 Qc8 47.Bc8+-; 42...Rc7 43.Qb8 Nc8 44.Be6 Rc2 45.Rc2 Qb8 46.Rc8 Qc8 47.Bc8+-) 43.Qd4 N7f5 44.Qb6 (44.Qe4 Qa5 (44...Nc4? 45.Qf5 Qb8 46.Rc4+-) 45.Nb3 Qa7–/+) 44...Qd7 (44...Nc4 45.Qc7 Rc7 46.Rc4 (46.Nc4?! Nh4 47.a6 Ra7=) 46...Rc4 47.Nc4+-; 44...Qh2 45.Be2 Rg8 46.Re1–/+) 45.Qb2 (45.Qb4 Nh4 46.Nb3 A) 46...Nc4?! 47.Rc4 Re8 A1) worse 48.Rh4 Re2 49.Nd2 Rd2 (49...Qd2?! 50.Qd2 Rd2 51.Kb3=) 50.Ka1 Rd1 51.Kb2 h6–/+; A2) 48.Re4=; B) 46...Ra8–/+) 45...h6 (45...Nh4 46.a6–/+; 45...Nh4!? 46.Bb5 Qd5 47.Nb3 Rd8–/+) 46.Bb3=+ Ra8 47.Nc4 Nc4 48.Bc4 (48.Rc4 Ra5 49.Qc3 Ra8=+) 48...Ne3 (48...Ra5 49.Qb8 Kh7 50.Bg8 Kg6 51.Qb6 Kh5 52.Qa5 Kh4 53.Bd5+-; 48...Nh4?! 49.a6–/+; 48...Nh4 49.a6–/+) 49.Bb3=+ Qb5 (49...Qd8 50.Qf2 Ng4 51.Qf5=; 49...Qd8 50.Qf2 Ng4 51.Qf5=) 50.Qc3 (50.Rc7 Nf5 51.Qc2+-; 50.Rc7 Nf5 51.Qc2+-) 50...Nd5?? Attacks the isolani on a5. The isolani on a5 becomes a target (50...Qe2 51.Qb2 Qg4 52.Qd2=; 50...Qe2 51.Qb2 Qg4 52.Qd2=) 51.Qd2?? (better 51.Qf3 Qa5 52.Bd5 (52.Qd5?! Qa3 53.Kb1 Rb8+-) 52...Qd2 53.Kb1 Rb8 54.Bb3+-; better 51.Qf3 Qa5 52.Bd5 (52.Qd5?! Qa3 53.Kb1 Rb8+-) 52...Qd2 53.Kb1 Rb8 54.Bb3+-) 51...Nf6=+ 52.Qb4 (52.Rc7 Re8 (52...Ra5?? 53.Rc8 Ne8 54.Qf2+-) 53.Qc1 Qe2 54.Qc2 Qg4=) 52...Qf5 (52...Qd7 53.a6=+) 53.a6 Qf2 (53...Ra6 54.Qf8 Kh7 55.Bg8 Ng8 56.Qf5 Kh8 57.Rc8+-; 53...Rd8 54.Rc2 Qd7 55.Qb7+-) 54.Rc2= Qa7?? (better 54...Qe3=; better 54...Qe3=) 55.Qb7+- Qa6?? (55...Qb8 56.Be6 Qd8+-; 55...Qb8 56.Be6 Qd8+-) 56.Rc8!! (56.Rc8 Rc8 57.Qa6+-; 56.Rc8 Rc8 57.Qa6+-) 1–0. Grigoriev,Armen – Topak,Engin, Kesan TUR, 2012. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e5 5.h3 Bf3 6.Qf3 Ngf6)

7.a3 e4 8.Qd1 Bd6 9.d3 Be5 (9...0-0 10.Nd2=+; 9...a5 10.b5=+) 10.d4 (10.Be5 Ne5 11.d4 Ned7=) 10...Bd6 11.c4 c6 (11...a5 12.ba5 c6 13.Bc3=) 12.c5 Bc7 (12...Be7 13.Be2=) 13.Nd2 0-0 14.a4 (14.Be2 a6=) 14...Ne8 15.h4 (15.Be2 f5=) 15...f5=+ 16.g3 Qf6 (16...Rb8 17.Qh5=+) 17.Bh3 (17.a5 Qe6=) 17...g6 (17...b6 18.Rb1=+) 18.Qe2 (18.h5 g5=) 18...Ng7=+ 19.Nb3 White prepares the advance a5. White intends a5 19...b6 (19...h6 20.g4=+) 20.cb6 (20.Rc1 bc5 21.Nc5 Nc5 22.dc5 Be5 23.Be5 Qe5=) 20...ab6 21.a5 (21.b5 Rfc8=+) 21...Nh5 (21...Bd6 22.Qd2=+) 22.Rg1 (22.g4 fg4 23.Bg4 Qe7=+) 22...Bd6=+ 23.Bc3 Qe7 (23...Ng7 24.Bf1=) 24.Qd2= Nhf6 25.Bf1 Rfb8 26.ab6 (26.a6 b5=+) 26...Ra1–/+ 27.Na1 Nb6 (27...Rb6 28.Nc2–/+) 28.Nb3=+ Na4 Attacking the isolated pawn on b4 29.Nc5 Nc3 (29...Bc5 30.dc5 Nc3 31.Qc3–/+) 30.Qc3 Qa7 31.Be2 Qb6 32.Kd2 Qb4 33.Qb4 Rb4 34.Kc3 (34.Rc1 Kf7–/+; 34.Rc1 Kf7–/+) 34...Bc5–+ 35.dc5 Ra4 36.Rb1 (36.Kb3 Ra5–+) 36...Nd7 37.Rb6 (37.Rb7 Nc5 38.Rc7 Ra2–+; 37.Rb7 Nc5 38.Rb8 Kg7–+) 37...Nb6 38.cb6 c5 39.Bb5 (39.b7 Rb4 40.Ba6 Kf7–+) 39…Rb4 (39...Rb4 40.Bc6 Kf7 41.Bd5 Kf6–+; 39...Rb4 40.Bc6 Kf7 41.Bd5 Kf6–+) 0–1. Hellmayr,Alois (2320) – Horvath,Peter (2500), AUT–chT2M, 2004. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e5 5.h3 Bf3 6.Qf3 Ngf6)

7.Nc3 e4 8.Qg3 Bb4 9.Qg7 Rg8 =.

5.a3 Ngf6 6.c4 a5 7.b5 Be7 8.Nc3 dc4 9.Bc4 Nb6 10.Be2 0-0 11.0-0 Bd6 12.Qc2 Qe7 13.Ne4 Ne4 14.Qe4 Bf5 15.Qb7 Na4 16.Be5 Be5 17.Ne5 Nc5 18.Qf3 Be4 19.Qf4 g5 20.Qg3 f6 21.Nc6 Qd7? (better is 21...Bc6 22.bc6 Ne4+=) 22.d4+- Nb3 23.Ra2 a4 24.Rd1 Kh8 25.Nb4 Rab8 26.Na6 Rb5 (26...Rbc8+-) 27.Qc7 (better is 27.f3 Bc6 28.Bb5 Bb5 29.Nc7+-) 27...Qc7+/– 28.Nc7 Rb6 29.f3 Rc6 30.fe4 Rc7 31.Rb2 Kg7 32.Kf2 Kf7 33.Bd3 (33.Bb5 Rc3+-) 33...Ke7 34.Bb1 (better is 34.Bb5!?+-) 34...Rc3 35.Ba2 h5 36.d5 Kd6 (better is 36...Nc5!? 37.Ke2 Rc8+=) 37.de6+/– Ke6 38.Rd4 Rc6?? (better is 38...Ra8 39.Ra4 Ra4 40.Bb3 Rb3 41.Rb3 Re4+/–) 39.Kf3 (39.Kf3 Ke7 40.Ra4+- (40.Bb3?! ab3 41.Rb3 Ra8+-); 39.Bb3?! ab3 40.Rb3 Ra8+-) 1–0. Svensek,Marjan – Djurkovic,Maks (2205), SLO–chT East, 2005.

5.a3 Ngf6 6.c4 dc4 7.Bc4 Bd6 8.0-0 0-0 9.d4 c6 (9...a5 10.b5=+) 10.Nbd2= Nb6 11.Bd3 a5 12.ba5 (12.Qb3 ab4 13.ab4 Qd7=) 12...Ra5 13.Qc2 (13.Qb3 Nfd5=) 13...Bc7 (13...Na4 14.Rfb1=) 14.Ne5+= Bh5 15.Bc3 Ra7 (15...Rd5 16.e4 Rd6 17.Rfb1+=) 16.Bb4 Re8 17.Bc5 Ra8 (17...Bd6 18.Rfb1 Bc5 19.Qc5+/–) 18.Bb6 (18.Rfb1 Ra7+/–) 18...Bb6+= 19.Rfb1 Rb8 (19...Rf8 20.Ndc4 Ra6 21.Nb6 (21.Rb6?! Rb6 22.Nb6 Qb6+/–) 21...Rb6 22.a4+/–) 20.Rb2 Ba7 (20...Ba5 21.Rab1 Bd2 22.Qd2+/– (22.Rb7 Rb7 23.Rb7 Qa8–/+)) 21.Rab1 Qc7 (21...Re7 22.Ne4 Ng4 23.Ng3 Ne5 24.Bh7 (24.Nh5?! Nd3 25.Qd3 e5=; 24.de5?! Bg6 25.Bg6 fg6+/–) 24...Kh8 25.Nh5+-) 22.Ne4 Nd5 23.Ng3 Bg6 24.Bg6 hg6 25.Ne4 Ne7 26.a4 f6 27.Nd3 b6 28.Nf4 Kf7 29.Ng3 Rh8+/– 30.h3 g5 31.Nd3 Rh4 32.Rb3 g4 33.hg4 Rg4 34.Nf4 Rc8 35.Qh7 Ng6 36.Ng6 Rg6 37.Qh5 Rd8 38.f4 f5 39.a5 b5 40.Rc1 Qb7 41.Rc2 Qa6 42.Nf1 Rc8 43.Nh2 Qa5+= 44.Nf3 Bb8 45.g4 (45...Bd6 46.Ng5 Kf6 47.Rbc3=; better is 45.Ng5!? Kf6 46.Rbc3+=). Woelfelschneider,Peter (1830) – Shchepetnev,Vasiliy (1940), CL3–2002.27.10, 2002.

5.a3 Ngf6 6.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 e6 6.a3).

5.a3 Ngf6 6.h3 Bf3 7.Qf3 Bd6 =.

5.b5 Ngf6 6.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 e6 6.b5).

5.c4 a5 A) 6.cd5 ed5 (6...ab4 7.h3 Bf5 8.Nd4 Ngf6 9.de6 Be6 10.a3 Nb6 11.ab4) 7.h3 (7.Nc3 Ngf6 8.h3 Be6 9.ba5 Ra5 10.Be2 Nc5 11.0-0) 7...Be6 8.ba5 Ra5 9.Nc3 Ngf6 10.Qc2 Nc5 11.d4; B) 6.h3 Bf3 7.Qf3 Ngf6 8.cd5 Nd5 9.b5 Qg5 10.Nc3 Ne5 11.Qe4; C) 6.ba5 C1) 6...Ngf6 7.cd5 (7.Nc3 dc4 8.Bc4 Ra5 9.d4 Nb6 10.Bd3 Bb4 11.0-0) 7...ed5 8.a6 ba6 9.Nc3 Bd6 10.h3 Be6 11.Ng5; C2) 6...Ne7 7.cd5 (7.Nc3 Ra5 8.cd5 Nd5 9.Nd5 Rd5 10.Bc4 Rc5 11.Qb3) 7...Nd5 8.Nc3 Ra5 9.Nd5 Rd5 10.Bc4 Rd6 11.Bc3; C3) 6...Ra5 7.cd5 (7.Bc3 Ra8 8.cd5 ed5 9.h3 Be6 10.d4 Ngf6 11.Nbd2) 7...ed5 8.h3 Bf3 9.Qf3 Ngf6 10.Nc3 Bd6 11.d4.

5.c4 Ngf6 6.a3 c6 7.Be2 Bf3+= 8.gf3 (8.Bf3 dc4 9.Qc2 (9.Be2 b5 10.d3 cd3 11.Qd3 a5 12.Bf3 Nd5 13.Qc2 Qc7 14.Nc3–/+; 9.Qc1 Nb6 10.Be2 a5 11.ba5 Ra5 12.Bc4 Rc5 13.d3 Nc4 14.dc4+=) 9...Nb6 10.b5 cb5 11.Bb7 Rb8 12.Bc6 Nbd7 13.a4 b4 14.Qc4+=) 8...g6 (8...dc4 9.Bc4 Nb6 10.d3+= (10.Be2 Bd6 11.Nc3 0-0 12.Ne4 Be7 13.d4 Nbd5 14.Rg1=) 10...a5 11.b5 Be7 12.bc6 bc6 13.Nd2 Rb8 14.Rg1=) 9.f4 (9.cd5 ed5 10.Nc3 Bd6= 11.0-0 Qb8 12.f4 h6 13.b5 Rg8 14.h3=) 9...Bg7 (9...dc4 10.Bc4 Bg7 11.Nc3 Nd5 12.Qc2 0-0 13.d4 a5 14.b5=) 10.d3 (10.cd5 ed5 11.Rg1 0-0 12.d4 Ne4 13.Nd2 f5 14.Nf3+=) 10...0-0 (10...dc4 11.dc4 Qc7 (11...Qe7 12.Qa4 Rg8 13.Nd2 h6 14.Rd1=) 12.Nd2 (12.Qa4+= h6 13.Bd4 g5 14.fg5+=) 12...0-0-0 13.Qa4 Kb8 14.Bd4+=) 11.Nd2 (11.Rg1 a5 12.Nd2 ab4 13.ab4 Qe7 14.Bc3+=) 11...a5 12.0-0 (12.Rg1 ab4 13.ab4 Qe7+= 14.Qb3+=) 12...Qe7 (12...b5 13.Qc2 (13.Bc3+= ab4 14.ab4+=) 13...Qe7 14.Bc3=) 13.Qb3= dc4 14.Nc4 (14.dc4=) 14...ab4 (14...a4 15.Qc2=) 15.ab4= Nd5 16.Bg7 Kg7 17.b5 c5 (17...Ra1 18.Ra1 Qf6 19.Ra7=) 18.Bf3 N7b6 (18...Rfd8 19.Rfc1=) 19.Ra8 (19.Nb6 Nb6 20.Rfc1 Ra1 21.Ra1 Rd8=) 19...Ra8 20.Nb6 Nb6 21.Qc3 (21.Rc1 Rc8=) 21...Kh6 (21...f6 22.Rc1 Rc8 23.Ra1=) 22.Ra1 (22.Rc1 Rc8=) 22...Rc8 (22...Nd5 23.Qb2 Rd8 24.Ra7=) 23.Ra7 Rc7 (23...Nd5 24.Qe5 f6 25.Qa1=) 24.Qe5+= f6 (24...c4 25.dc4 Nc4 26.Qg5 Qg5 27.fg5 Kg5 28.Rb7 (28.Bb7? Nd6–+) 28...Rb7 29.Bb7+=) 25.Qe4 f5 26.Qe5 c4 27.dc4 Nc4 28.Qd4 e5 29.fe5 Ne5 30.Qf4 Kg7 31.Bb7 Rc1 32.Kg2 Nd3 33.Qd4 Kh6 34.h4 f4? 35.Qd3 Qh4= 36.Kf3 Qh5 37.Kf4 Qg5 38.Kf3 Qh5 39.Kf4 Rc4?? 40.e4+- Qh4 41.Ke3 Rb4 42.Bc8 Qf6 43.Ra2 Qe5 44.Kf3 Qh5 45.Kg2 Qg5 46.Qg3 Rb5 47.Qg5 Kg5 48.Kg3 Kf6 49.f3 Rc5 50.Ra6 Ke5 51.Bh3 Rc1 52.Re6 Kd4 53.Kf4 Rh1 54.Rd6 Kc5 55.Rd5 Kc6 56.Bd7 Kc7 57.Bb5 h6 58.e5 Re1 59.Bd3 1–0. Dominguez,JM (2345) – Georgiev,Kiril (2645), 38th Olympiad, Dresden GER, 2008. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e6)

5.c4 Ngf6 6.Qa4 c6 (6...a5 7.ba5 c6 8.cd5 Ra5 9.Qd1 ed5 10.Bc3 Ra8 11.h3) 7.cd5 Nb6 8.Qb3 Qd5 9.Ne5 Bf5 10.b5 c5 11.Qd5.

5.c4 Ngf6 6.Nc3 Bb4 7.cd5 ed5 8.Qb3 Bc3 9.Bc3 0-0 10.Qb7 Rb8 11.Qa7.

5.c4 Ngf6 6.c5=+ a5 7.a3 ab4 8.ab4 Ra1 9.Ba1 Be7 10.h3 Bf5 11.Bd4.

5.c4 Ngf6 6.cd5 A) 6...Bb4 7.Qa4 (7.h3 Bf3 8.Qf3 ed5 9.Nc3 Nc5 10.Qf4 Bc3 11.Bc3) 7...Bd6 8.de6 Be6 9.Nc3 0-0 10.Nd4 Re8 11.Be2; B) 6...ed5 7.Qb3 Bd6 8.Nc3 c6 9.Nd4 0-0 10.h3 Bh5 11.Nf5; C) 6...Nd5 7.Nc3 (7.a3 a5 8.Nc3 ab4 9.ab4 Ra1 10.Qa1 Nb4 11.Qa4) 7...Nb4 8.Be2 Bf5 9.0-0 Bc2 10.Qc1 Nc5 11.Ne1.

5.c4 Ngf6 6.h3 Bf3 7.Qf3 (7.gf3 Bb4 8.cd5 ed5 9.Nc3 d4 10.Nb5 de3 11.fe3) 7...Bb4 8.cd5 ed5 9.Nc3 Nc5 10.Qf4 Bc3 11.Bc3.

5.Be2 Ngf6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 e6).

5.h3 Bf3 6.Qf3 Ngf6 (6...Bb4?? 7.Bg7 Ngf6 8.Bh8+-) 7.a3 c5 (7...a5 8.b5=) 8.bc5 Bc5 9.c4 Qb6 (9...0-0 10.cd5 Nd5 11.Nc3=) 10.Bf6 Nf6 11.Nc3 0-0 12.cd5 Nd5 13.Rb1 (13.Nd5 Qb2 14.Rd1 ed5 15.Qd5 b6+=) 13...Qd6 14.Nd5 (< 14.Rb7 Nc3 15.dc3 Rad8–/+ (15...Ba3?! 16.Be2=)) 14...ed5 15.a4 Bb6 (15...b6 16.Ba6=) 16.Bd3 Rac8 17.0-0 Rc5 (17...Rfd8 18.Be2=) 18.Be2 d4 (18...Rd8 19.d4 Ra5 20.Bd1+=) 19.Qb7+= d3 20.Bf3 Rc2 21.Rfd1 Rd8 22.Qa6 (22.Rb5 Bc7 23.g3 a6+-) 22...g6 (22...Qe6 23.a5 Bc5 24.Qe6 fe6 25.Be4+/–) 23.Be4 h6 24.a5 Bc7= 25.Qd6 Rd6 26.Rb5 f5 27.Bb7 Kf8 28.a6 Rb6 29.Rb6 Bb6 30.Kf1 Ke7 31.g4 Kd6 32.f4 Ba5 33.gf5 gf5 34.Ke1 Bd8 (34...h5 35.Bg2 Bd8 36.Bf3+=) ½–½. Pleschke,Helmut (1700) – Roloff,Karsten, ECT, 1999.

5.h3 Bf5 =.

5.h3 Bh5 6.a3 Ngf6 7.Be2 c5 8.bc5 Bc5 9.0-0 0-0 10.Nc3 Rc8 11.g4 Bg6 12.Nh4 d4 13.ed4 Bd4 14.Ng6 fg6 15.Rb1 Ne5 16.Nb5 Bb2 17.Rb2 a6 18.Nc3 b5 19.a4 Qd4 20.ab5 Ne4 21.Ne4 Qe4 22.ba6 Rf7 23.d4 Rf4 24.de5 Rf7 25.Rb7 Rcf8 26.Rf7 Rf7 27.f4 Qe3 28.Kh2 Qc5 29.Qd8 Rf8 30.Qd7 Qc2 31.Qe6 Kh8 32.Qc4 Qb2 33.a7 h6 34.e6 Qb7 35.Qa6 Qe7 36.Rb1 Kh7 37.Rb8 1–0. kamret (2175) – kabieces (2260), GameColony.com, 2003.

6.a3 Ngf6 (6...a5 7.Nc3 (7.cd5 cd5 8.Nc3 Ngf6 9.Bb5 Bd6 10.Be2 ab4 11.Nb5) 7...dc4 8.Bc4 Ngf6 9.b5 Bd6 10.bc6 bc6 11.Rb1; 6...dc4 7.Bc4 Ngf6 8.0-0 Bd6 9.h3 Bf5 10.Nc3 0-0 11.Nd4) 7.h3 (7.cd5 cd5 (7...ed5 8.h3 Bf3 9.gf3 Bd6 10.Nc3 0-0 11.Rg1) 8.h3 (8.Nc3 a5 9.Bb5 Bd6 10.h3 Bf3 11.gf3) 8...Bh5= (8...Bf3 9.gf3 a5 10.Nc3 ab4 11.ab4) 9.Nc3 a5 10.Bb5 ab4 11.ab4) 7...Bf3 8.Qf3 Bd6 (8...a5 9.b5 Rc8 10.bc6 bc6 11.cd5) 9.cd5 (9.d4 0-0 10.Nc3 e5 11.cd5) 9...cd5 (9...ed5 10.Be2 0-0 11.Nc3) 10.Nc3 (10.d4 a5 11.b5) 10...0-0 (10...Rc8 11.Nb5= 0.04/9 (11.Rc1=)) 11.Qd1 (11.Nb5 Ne5 12.Be5 Be5=) 11...Be5 (11...a6 12.Rc1=+) 12.d4= Bd6 13.Bd3 Nb6 14.Qe2 Rc8 15.0-0 Nc4 16.Rfc1 Qd7 17.e4 Bf4 18.Rd1 Nb2 19.Qb2 Qc6 20.Ne2 de4 21.Nf4 ed3 22.Rac1 Qd6 23.Nd3 Rcd8 (23...Nd5 24.Rc8 Rc8 25.Rc1=+) 24.Ne5 Nd5 25.Qb3 Qe7 26.Qf3 Rd6 27.Rc5 Re8 (27...Qh4 28.b5=) 28.g3 (28.Rdc1 Red8=) 28...Qf6 (28...f6 29.Nc4 Rdd8 30.Ne3=) 29.Qe4 (29.Qf6 gf6 30.Nc4 Rd7+=) 29…Qe7 ½–½. Kabanov,Nikolai (2500) – Kharlov,Andrei (2555), 28th Nezhmetdinov mem, 2006. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.e3 e6)

6.Nc3 Ngf6 (6...dc4 7.Bc4 Ngf6 8.Qb3 Bf3 9.gf3 Ne5 10.Be2 Nd3 11.Bd3) 7.c5 (7.cd5 ed5 8.h3 Bf3 9.Qf3 Bb4 10.Be2 0-0 11.0-0) 7...a5 8.a3 Ne4 9.h3 Bh5 10.Be2 Be7 11.0-0.

6.cd5 cd5 7.Qb3 Ne7 8.Na3 Nc6 9.Rc1 Bf3 10.gf3 Bb4 11.Rc6.

6.cd5 cd5 7.Nc3 Ngf6 8.Qb3 Rc8 9.Bd3 Be7 10.Nb5 a6 11.Nbd4.

6.cd5 cd5 7.Be2 Ngf6 8.a3 Bd6 9.0-0 0-0 10.h3 Bh5 11.Nc3 a6 12.Rc1 Rc8 13.Qb3 Qe7 14.Na4 (14.Rc2 Rc7=+) 14...b5 15.Nc3 Ne4 (15...Bf3 16.Bf3 Ne5 17.Be2=+) 16.Ne4 (16.Rc2 Ng5 17.Nd4 Be2 18.Nde2 Ne4=) 16...de4 17.Nd4 Be2 18.Ne2 Nb6 19.f3 Nc4 20.Bc3 Qb7 21.Nd4 Bb8 (21...Be5 22.Ne6 fe6 23.Be5 ef3 24.Rf3 Rf3 25.gf3 Qf3 26.Bf4-+) 22.f4 (22.fe4 Qe4 23.Qc2 Qd5=+) 22...Ba7 23.Ne2 (23.Qa2 Qd5 24.Qa1 Rfd8-/+) 23...Rfd8 24.Qa2 (24.Rc2 Rd3 25.Kh2 Qd5-/+) 24...Rd3 (24...Qd5 25.Bd4 Bd4 26.Nd4 Ne3 27.Qd5 Nd5-/+ (27...ed5? 28.de3 Rc4 29.Nc6+-)) 25.Ng3?? (25.Rc2 Qd5-/+) 25...f5 (better 25...Ne3 26.de3 Be3 (26...Rcc3?! 27.Rc3 Be3 28.Kh1 Rc3 29.Qb2-+; 26...Rdc3?! 27.Rc3 Rc3 28.Qb2 Re3 29.Kh2-+) 27.Kh2 Bc1 (27...Rdc3?! 28.Rc3 Rc3 29.Qb2-+; 27...Rcc3?! 28.Rc3 Rc3 29.Qb2-+) 28.Rc1 Rdc3 29.Rc3 Rc3-+) 26.Rf2 Ne3?? (26...Qd5 27.Nf1-+) 27.de3 (27.Qe6 Qf7 28.Qc8 Qf8 29.Bg7 Qc8 30.Rc8 Kg7 31.de3 Be3 32.Nf5 Kf7 33.Ne3 Re3 34.Rc7 Ke6 35.f5 Kf6 36.Rc6 Kf7+-) 27...Be3?? (better 27...Qf7 28.Bd2 Rc1 29.Bc1 Rd1 30.Kh2 Rc1-/+) 28.Rcf1 (better 28.Qe6 Qf7 29.Qc8 Qf8 30.Qf8 Kf8 31.Bg7 Kf7 32.Rc7 Ke8 33.Kf1 Rd1 34.Ke2 Bf2 35.Kf2+-) 28...Qd5 (better 28...Bf2!? 29.Rf2 Rcc3 30.Qe6 Qf7 31.Qf7 Kf7 32.Nf5 Ra3 33.Rc2-+) 29.Qd5 Rd5 (better 29...Bf2 30.Kf2 ed5-+ (30...Rd5?! 31.Rc1=+)) 30.Be5? (better 30.Ne2-+) 30...Rc2 (30...Bf2?! 31.Kf2 g5 32.Ne2-/+) 31.Nh1 Rdd2 (31...Bf2 32.Nf2 e3 33.Nd1-+) 32.Bb8 (32.g4 Bb6 33.Kg2 Bf2 34.Nf2 e3-+) 32...Bf2 33.Nf2 e3 34.Nh1 (34.Ba7 Re2 35.Bc5-+) 34…Rg2 0-1. carlos78 (2170) - Eggplant (2185), Rated Blitz game, lichess.org, 2015.

6.cd5 ed5 7.h3 (7.b5 Ngf6 8.Nc3 Bd6 9.h3 Bf3 10.gf3 0-0 11.Rg1) 7...Bf3 8.Qf3 Ngf6 9.Qf4 Qb8 10.Qh4 Be7 11.Nc3.

6.h3 Bf3 7.gf3 (7.Qf3 Ngf6 8.a3 Bd6 9.d4 e5 10.cd5 e4 11.Qd1) 7...Ngf6 8.Rg1 g6 9.a3 a5 10.cd5 ed5 11.b5.

(--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7).

5.c4 c6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4 5.c4 Nbd7).

5.c4 e6 6.Qb3 (--> 3.c4 e6 4.Qb3 Nf6 5.e3 Nbd7 6.Nf3).

5.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2).

5.Be2 c6 6.0-0 e6 7.a3 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4 5.Be2 e6 6.a3 Nbd7 7.0-0).

5.Be2 c6 6.a3 e6 (--> 1.b4 c6 2.Bb2 d5 3.e3 Nf6 4.Nf3 Bg4 5.Be2 e6 6.a3 Nbd7).

5.Be2 e6 6.b5 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 e6 6.b5 Bd6).

5.h3 Bh5 (--> 1.b4 d5 2.Bb2 Bg4 3.h3 Bh5 4.Nf3 Nf6 5.e3 Nbd7).

5.Be5 e6 6.Qc1 Nf6 (6...Bb4?? 7.Bg7 Nf6 8.Bh8+-) 7.a3 Bd6 8.Qb2 0-0 9.e3 Bf5 10.d4 (10.Bf6 Qf6 11.Qf6 gf6+=) 10...Ne4 11.c4 a5 (11...Be5 12.de5 dc4 13.Bc4+=) 12.Bd6+= cd6 (12...Qd6 13.ba5 Rfb8 14.f3=) 13.Nd2 (13.cd5!? ed5 14.Be2=) 13...ab4+= 14.Qb4 dc4 15.Nc4 b5 16.Nd2 Ra4 17.Qb2 (better is 17.Qb5!? Qa8 18.Ne4=) 17...Qa5–/+ 18.f3 Nd2 19.Qd2 d5 (better is 19...b4!?–/+) 20.Qa5 Ra5 21.Kd2 Rfa8 22.Be2 (22.g4 Bg6–/+) 22...b4 (worse is 22...Ra3 23.Ra3 Ra3 24.Rc1 Ra2 25.Ke1+=) 23.Rhc1 Kf8 24.Bd3 (24.g4!? Bg6 25.h4–/+) 24...Bd3–+ 25.Kd3 Ra3 26.Ra3 Ra3 (worse is 26...ba3 27.Ra1 a2 28.Kc2–/+) 27.Kd2 Ra2 28.Rc2?? (better is 28.Kd3–+) 28...b3 (28...b3 29.Kc3 Rc2 30.Kb3 Rg2–+) 0–1. Ehrlich,Hans Georg (1930) – Beekhuis,Maarten (2080), NRW Class2, 2009.

5.Be5 e6 6.Nc3 A) 6...Bb4?? 7.Bg7 d4 8.Nb1+- (8.Bh8?! dc3 9.dc3 Be7+-); B) 6...f6 7.Bg3 Bb4=+.

5.Be5 e6 6.h3 Bf5=+ 7.a3 (7.Nc3 Nf6=+) 7...Nf6 8.e3 Bd6 9.Bb2 (9.Bd6 Qd6 10.Nc3 c6=+) 9...e5 (9...a5 10.Nc3–/+) 10.d3 (10.c4 d4–/+) 10...c6 (10...0-0 11.Nd2–/+) 11.Be2 Qe7 (11...0-0 12.0-0–/+) 12.c4 (12.Nd2 a5–/+) 12...dc4 13.dc4 0-0 14.Nd2 (14.Nc3 Rfd8 15.Qb3 a5–/+) 14...c5 (14...Rfd8 15.Qa4–/+) 15.b5 (15.0-0 cb4 16.ab4 Bb4–/+) 15...Rad8 (15...Bc7 16.Qb3 Rfd8–/+) 16.Bg4 (16.Qa4 b6–/+) 16...Bg6 (16...Ng4 17.hg4 Bd3 18.Qf3–+) 17.0-0? (better 17.Bf3!?–/+; 17.Be2!?–/+) 17...Bc7–+ 18.Qc1 (18.Bc3 Rd3 19.Qc2 Ng4 20.hg4 e4–+) 18...Ng4 19.hg4 e4 20.Rd1 (20.Nb3 Rd3 21.Qc2 Qh4–+) 20...Qh4 21.Nf1 Qg4 22.a4 (22.Rd5 Rd5 23.cd5 Qe2–+) 22...Qe6 (22...f6 23.Rd5 Bf7 24.Qd1 Qd1 25.Rdd1–+ (25.Rad1?? Bd5 26.cd5 Rf7–+)) 23.Qc2 (23.Rd8 Rd8 (worse 23...Bd8 24.Qc2–+) 24.Ba3 Qe7–+) 23...Bh5 (23...Rd3!? 24.Rd3 ed3 25.Qb3–+) 24.Rd8 Rd8 (24...Bd8?! 25.Ng3 Bg6 26.Rd1–/+) 25.a5 f6 26.Nd2 (26.Ba3 Bd6–+) 26...Qd6 27.Nf1 Qd3 28.Qd3 Rd3 29.a6 (29.Ng3 Bg3 30.fg3 Re3–+) 29...b6 30.Rc1 (30.g3 Kf7–+) 30...Kf7 31.Rc3 (31.Bc3 Rd1 32.Rd1 Bd1–+) 31...Rd1 32.Rc1 Rd7 (32...Rc1 33.Bc1 Be2 34.Nd2–+) 33.Rc2 (33.Bc3 Bg4–+) 33...Ke6 (33...Bg4 34.Rc1–+) 34.Rd2 (34.Rc1 h6–+) 34...Rd2 35.Nd2 Be2 36.g3 (36.Bc3 h5–+) 36...Kf5 37.Kg2 Kg4 (37...h5 38.Bc3–+) 38.Kh2 (38.Ba1 h5–+) 38...Bd3 (38...h5 39.Kg2–+) 39.Kg2 (39.Bc3 h5 40.Kg2 Be2–+) 39...h5 40.Bc3 (40.Kg1 Bb8–+) 40...Be2 41.Bb2 (41.Kg1 Kf5–+) 41...Kf5 42.Bc3 g5 43.Bb2 Bd3 (43...Bg4!? 44.Ba1–+; 43...Bg4 44.Ba1–+) 44.Kh3 (44.f3–+) 44...Be2 45.Kg2 Bg4 46.Bc3 (46.Kg1 h4–+) 46...h4 47.gh4 (47.Kh2 h3–+) 47...gh4 48.Bb2 (48.Kh1–+; 48.Kg1–+) 48...h3 49.Kg1 h2 50.Kh1 (50.Kg2 Be2–+) 50...Bf3 51.Nf3 ef3 52.Bc3 (52.e4 Ke4 53.Bc1 Kd3–+) 52...Ke4 53.Bf6 (53.Be1 Kd3 54.e4 Ke2 55.e5 Ke1 56.e6 Bd6 57.e7 Be7 58.Kh2 Kf2 59.Kh3 f5 60.Kh2 Bf6 61.Kh3 Ke2 62.Kh2 f2 63.Kg2 f1Q 64.Kg3 Ke3 65.Kh2 Be5) 53...Kd3 (better 53...Bg3! 54.Bd8 (worse 54.fg3 f2 55.Kg2 h1Q 56.Kf2 Qf3 57.Kg1 Qg3 58.Kf1 Kf3 59.Bh4 Qg2 60.Ke1 Qe2) 54...Bf2 55.Kh2–+) 54.e4 (54.Bh4 Kc4 55.e4 Kd3–+) 54…Ke4 (54...Ke4 55.Bh4 Kd4 56.Bf6 Kc4–+; 54...Kc4?! 55.Be5 Bd8 56.Kh2–+) 0–1. Kasela,Sten (2020) – Remmel,Anto (2280), Hiiumaa Suvi op, 2007. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7)

5.Be5 f6 6.Bb2 e5 7.b5 (7.a3 Bd6=+) 7...Bd6 (7...Qd7 8.h3 Bh5 9.a4–/+) 8.c4 dc4 9.Qc2 Qd7 10.Qc4 Ne7 (10...Rd8 11.e4=+) 11.e4 Ng6 (11...Be6 12.Qa4=+) 12.h3 (12.d4 ed4 13.Qd4 Ne5=+) 12...Be6 13.Qa4 Bc5 14.Bc4 (14.a3 Qd6–/+) 14...Nf4 15.Be6 Nd3 16.Ke2 Nf4 17.Ke1 (17.Kd1 Qe6 18.Qc2 Qd6–+) 17...Qe6 18.Kf1 Nd3 19.Qc2 Rd8 (19...Qd7 20.a4–+) 20.Ba3 (20.Ke2–+) 20...Ba3 21.Na3 Qb6 (22.Kg1 Qf2 23.Kh2 Ne1 24.Rhe1 Rd2 25.Qd2 Qd2–+) 0–1. Shoup,Karl – Teumer,Joerg, M217D BdF, 1997.

5.Be5 f6 6.Bb2 e6 7.a3 c5 (7...a5 8.ba5 Ne7 9.f3+=) 8.bc5 (8.f3!? Bh5 9.bc5 Bc5 10.e3=) 8...Bc5+= 9.d4 Bd6 10.Nd2 Rc8 11.h3 Bf5 The backward pawn on c2 becomes a target (11...Bh5 12.c3 Qb6 13.Qa4 Kd8 14.Ra2+=) 12.c3 (12.c4 dc4 13.e4 c3 14.Qa4 Kf7 15.ef5 cd2 (15...ef5? 16.Bc4 Kg6 17.Bc3+-) 16.Kd2 ef5 17.Qa7 Ne7=) 12...Qb6 13.Qa4 Kf7 14.Ra2 Ne7 15.e3 a6 16.Be2 Qc6 17.Qb3 (17.Qc6 Rc6 (worse is 17...bc6 18.Ba6 Ra8 19.Be2+/–; 17...Nc6?! 18.c4=) 18.c4 dc4 19.Nc4 Bc7+=) 17...b5 (17...Rhd8 18.0-0+=) 18.0-0 (18.a4!? ba4 19.Qa4 Qa4 20.Ra4=) 18...Rb8–/+ 19.Rc1 Nc8 (19...Bg6 20.Qd1+=) 20.Bh5 (20.a4 ba4 21.Qd1 Rb2 22.Rb2 Ba3=) 20...g6 21.Bf3 (21.Be2!? e5 22.de5 fe5 23.e4=) 21...Nb6–/+ 22.Qd1 Nc4 23.Nb1 (23.Nc4 Qc4 24.Raa1 Rhc8+=) 23...Bc7 (23...Rhc8 24.Be2–+) 24.g4 (24.Nd2 Qd6 25.Nf1 Rhc8–/+) 24...Be4–+ 25.Be4 de4 26.g5 (26.Nd2–+) 26...Qd5 27.Ba1?! (27.gf6 Ne3! 28.fe3 Qa2 29.Rc2–+) 27...Ne3! 28.fe3 Qa2 29.Nd2 Qd5 30.gf6 (30.Qg4 f5 (30...Qg5?! 31.Qg5 fg5 32.Ne4–+; 30...fg5?! 31.Ne4 h6 32.Nc5–+) 31.Qg2 Qa2–+) 30...Qg5 31.Kh1 (31.Kf1 Qe3 32.Qe2 Qh3 33.Ke1 Bf4–+) 31...Qe3 32.Nf1 Qh3 33.Kg1 Qf3 (33...Bf4 34.Rb1–+) 34.Qc2 (34.Qf3 ef3 35.Ne3 g5–+) 34...e3 (34...Kf6!? 35.Re1–+) 35.Re1 Qf2! 36.Qf2 ef2 37.Kf2 Bf4 38.Ng3 Bg3 39.Kg3 Rhd8 40.Rh1 (40.Bb2 Rd5–+) 40...h5 41.Bb2 a5 (41...Rd5 42.Kf3–+) 42.Bc1 (42.Kg2 Rd5–+) 42...b4 43.ab4 ab4 44.Bf4 Rbc8 45.cb4 Rd4 (45...Kf6?! 46.Be5 Kg5 47.Bf4 Kf5 48.Be5–+) 46.Be5 (46.Rf1 Rb4 47.Be5 h4 48.Kf3 Rb3 49.Kg2 Rc2 50.Kg1 Re3–+) 46...Rb4 (46...Rd3 47.Kf2 Rc2 48.Ke1–+) 47.Ra1 Rb3 (47...h4 48.Kh3 g5 49.Ra3–+) 48.Kg2 (48.Kh4 Rc4 49.Kg5 Rb7–+) 48...Rc2 49.Kg1 g5 50.Ra7 Kg6 51.Ra1 g4 52.Rf1 (52.Re1 h4 53.Rf1 Rf3 54.Rf3 gf3–+) 52...Kf7 53.Ra1 (53.Re1 g3 54.Bd4 h4–+) 53...h4 54.Rd1 Re2 55.Bc7 h3 56.Kh1 (56.Rc1 g3 57.Be5 Re5–+) 56...Kf6 (56...g3 57.Bg3 Rg3 58.Rd2–+) 57.Bd8 (57.Rg1 Kf5 58.Bg3 e5–+) 57...Kf5 58.Bc7 (58.Bh4 g3 59.Bg3 Rg3 60.Rf1 Ke4–+) 58...e5 59.Rf1 Rf3 60.Ra1 Ref2 (60...g3 61.Bb6 Kg4 62.Bf2 Ref2 63.Kg1 h2 64.Kh1 Rf1 65.Rf1 Rf1 66.Kg2 h1Q) 61.Ra5 g3 0–1. Khabinets,Ivan (2105) – Reshetar,Alexsander (1815), 29th Mukachevo Rating, 2016. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.Ne5 Ne5)

5.Bg2 Qb6 6.a3 a5 7.Nc3 e5 (worse is 7...ab4 8.ab4 Rc8 9.b5+/–) 8.0-0 Ngf6 9.d4 (9.h3 Be6=) 9...e4 (9...Bf3!? 10.ef3 Qd4 (worse is 10...ab4 11.ab4 Ra1 12.Qa1 ed4 13.Na2+=) 11.Qd4 ed4+=) 10.Ne5= Be6 11.Nd7 (11.Qd2 Ne5 12.de5 Ng4=) 11...Nd7= 12.Na4 Qb5 13.Nc5 Bc5 14.dc5 ab4 (14...f6 15.Qd2=) 15.Qd4 (better is 15.Bg7 Rg8 16.ab4 Ra1 17.Qa1+/–) 15...f6= (worse is 15...Qc5 16.Qc5 (worse is 16.Qb4 0-0–/+; worse is 16.ab4 Qd4 17.Bd4 0-0+=) 16...Nc5 17.ab4+=) 16.ab4 0-0 17.f3 ef3 18.ef3 Bf5 19.f4 Bc2?? (better is 19...Qe2=) 20.Bh3+- Rad8 21.Rf3?? (better is 21.Rfc1 Qe2 22.Bf1+-) 21...Qc4 (21...Qe2 22.Rf2 Qe4 23.Ra7+/–) 22.Qc4 dc4 23.Be6 Kh8 24.Bc4 Rfe8 25.Ra7 Rb8 26.Bc3 Nf8 27.g4 Bd1+= 28.Rg3 Ne6 29.g5+- fg5 30.f5 Nf4 31.f6 h6 32.fg7 Kh7 33.g8Q Rg8 34.Bg8 Kg8 35.Be5+- Ne2 36.Kf2?? Re8?? 37.Re3+- Nc1 38.Kg3 Re7? 39.Bd4 Ne2+/– 40.Kg2 Rd7 41.Be5 1–0. Kranzl,P (2280) – Wiesinger,R, Danube Open, Aschach AUT, 1998. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7)

5.Bg2 Ngf6 6.0-0 e6 7.a3 Bd6 8.d3 h5 9.c4!?= Bf3 10.Bf3 h4 11.c5 hg3 12.fg3 Be5 13.d4 Bc7 14.Nc3 e5 =.

5.Bg2 Ngf6 6.0-0 e6 7.a3 Bd6 8.d3 h5 9.Nbd2 a5 10.ba5 Ra5 11.h3 Bf3 12.Nf3 Qe7 13.e4 Ba3 14.e5 Nh7 =.

5.Bg2 Ngf6 6.0-0 e6 7.a3 Bd6 8.d3 h5 9.h4 a5–/+ 10.ba5 Qa5 11.c4 0-0 12.Nbd2 e5 13.d4 Bf3 14.Bf3 e4 +=.

5.Bg2 Ngf6 6.0-0 e6 7.a3 Bd6 8.d3 h5 9.h4 a5 10.ba5 Qa5 11.Nbd2 Qb6 (11...0-0 12.c4+=) 12.Rb1 Qc7 13.Qc1 0-0 14.c4 Ra4 15.Qc2 (15.Bf6 Nf6 16.c5 Be7+=) 15...Rfa8 16.Qb3 (16.cd5 ed5 (16...Ba3?! 17.dc6 Bb2 18.Rb2 Qc6 19.Nc4=) 17.Nd4 A) worse is 17...Ba3 18.Nb5 Qb8 19.Na3+= (worse is 19.Ba3 cb5 20.Bc1 Be2–/+); B) 17...Be5–/+) 16...R8a7 (16...b6 17.Ra1–/+) 17.Ra1+= Qd8 18.d4 Qe7 (18...b6 19.Rfc1+=) 19.c5 Bc7 20.e4 (20.Qe3!?+=) 20...de4 21.Ng5 e5 22.Nde4 ed4 23.Rfe1 Qf8 24.Rac1 Nd5 25.Rc4 Rc4 26.Qc4 Ba5 27.Rc1 (27.Rb1 f6 28.Nf3+=) 27...Bc3 (better is 27...f6!? 28.Nf3 Bf3 29.Bf3 Ne5+=) 28.Bc3= dc3 29.Nc3 (29.Nd6 b6 (worse is 29...Ra3 30.Bd5 cd5 31.Qd5+/–) 30.Qd3 N7f6 31.cb6 Ra3 32.Ndf7 Nb6 33.Bc6 Qe7+/–) 29...Nc3 (29...N5f6 30.Nce4 Ra3 31.Nd6=) 30.Qc3 Qa8 31.Re1 (31.Qb3!? Qe8 32.Be4+=) 31...Ra3+= 32.Qc4 Qf8 33.Qe4 g6 (33...Qc5?? 34.Qh7 Kf8 35.Qh8) 34.Qb4 Qc5 35.Qb7 Ra2 36.Rf1 (36.Ne4 Qc2+=) 36...Rc2–/+ 37.Qc8 (37.Be4 Rc3 38.Bg2 Bf5–/+) 37...Kg7 38.Qe8 Qf8 (38...Ne5 39.Ne4 Qd4 40.Qe7–/+) 39.Qe4 Bf5 40.Qd4 Kg8 41.Re1 Qc5 42.Re8 Nf8 43.Qf4 Kg7 44.Be4 Rc1 45.Kh2 (45.Kg2 Rc4+=) 45...Rc4 46.Re5 (46.Qd2 Be4 47.Ne4 Qd4–/+) 46...Qa7 47.Rf5 (47.Re8!? Nh7 48.Qe5 Nf6 49.Re7 Qf2 50.Bg2=) 47...gf5–/+ 48.Qf5 Qe7 49.Bf3 Rc5 50.Qf4 f6 51.Ne4 (51.Nh3 Ng6 52.Qd4 Ne5 53.Bh5 Rd5–/+) 51...Re5 52.Nc3 Qc5 (52...Ne6 53.Qd2 Qd8 54.Qb2–+) 53.Nd1?? (better is 53.Ne4 Re4 54.Qe4 Qf2 55.Kh3=) 53...Ne6–+ 54.Qa4 (54.Qd2 Nd4 55.Bg2 Re2–+) 54...Nd4 55.Bg2 Re7 (55...Re2!? 56.Kg1–+) 56.Ne3–/+ Re5 57.Qa8 (57.Nd1 Re2 58.Kg1–+) 57...Nf5 (57...Re6–/+) 58.Qc6 (better is 58.Nf5!? Rf5 59.Qb7 Kh6 60.f4+=) 58...Ne3–+ 59.fe3 Qc6 60.Bc6 Re3 61.Kg2 Re5 62.Kf3 Rc5 63.Bd7 Kf7 64.Kf4 Ke7 65.Bf5 Kd6 66.Bg6 Ke6 67.Be8 Rc4 (67...Rf5!? 68.Ke4 Re5 69.Kf4–+) 68.Kf3 (68.Ke3+=) 68...Rc5 69.Bg6?? (69.Kf4 Rf5 70.Ke4 Re5 71.Kf4–+) 69...Ra5 70.Kf4 Ra4 (70...Rb5 71.Ke3–+) 71.Ke3 (71.Kf3 Ra3 72.Kf4 Ra5–+) 71...Ke5 (better is 71...Rg4!? 72.Bh5 Rg3 73.Kf4 Rg1–/+) 72.Bh5+= Ra3 73.Kf2 f5 74.Be2 Ke4 75.Bd1 Ra2 76.Be2 Rb2 77.h5 Rd2 78.h6 Rd6 79.g4 Rh6 (79...fg4 80.h7 Rh6 81.Bg4 Rh7 82.Bd1+=) 80.gf5 (80.Bf3 Kf4 81.gf5 Kf5+=) 80...Rh2–/+ 81.Kf1 Ke3 (81...Kf5 82.Bf3–/+) 82.Ba6+= Rf2 83.Ke1?? (better is 83.Kg1+=) 83...Ra2–+ (83...Ra2 84.Be2 Re2 85.Kd1 Rf2 86.Kc1 Kd3 87.f6 Rf6 88.Kb2 Rb6 89.Ka3 Kc4 90.Ka2 Kc3 91.Ka1 Kc2 92.Ka2 Ra6; 83...Rf5?! 84.Kd1–/+) 0–1. Perdomo Araujo,Angel Eduardo (2080) – Valles Moreno,I (2415), 4th Memorial Oliver Gonzalez, 2015.

5.Bg2 c6 6.0-0 e6 7.a3 Bd6 8.d4 0-0 9.Nbd2 a5 10.ba5 Qa5 11.h3 (11.c4 Be7+=) 11...Bf3–/+ 12.Bf3 Nb6 13.Rb1 Na4 14.e3 (14.Ba1!?+=) 14...b5–/+ 15.Ba1 Ba3 16.Nb3 Qc7 17.Qd3 Be7 18.Rfd1 (18.Nd2 Rfd8–/+) 18...Nb6 19.Bc3 (19.Nd2 Ra3 20.Rb3 Ra2–+) 19...Nc4–+ 20.Nd2 Ra3 21.Nc4 dc4 22.Qd2 Nd5 23.Bd5 (23.Ba1 Rfa8–+) 23...ed5 (23...cd5?! 24.Rb5 Rb8 25.Rdb1 Rb5 26.Rb5+=) 24.Bb4 (24.Ra1 Rfa8 25.Ra3 Ra3–+) 24...Bb4 25.Rb4 Rfa8 26.c3 Qe7 27.Rb2 Qe4 28.Rc1 f5 29.Qd1 g6 30.Qc2 (30.Kh2 Kg7–+) 30...Kg7 (30...Rb3 31.Qd2 Raa3 32.Rbc2–+) 31.Qe4 (31.Qd1 Kf6–+) 31...fe4 32.Kg2 Rb3 33.Rbc2 Raa3 34.Kf1 (34.g4 Kf6–+) 34...Kf6 35.Ke2 b4 36.Kd2?? (better is 36.cb4 Rb4 37.Kd2–+) 36...bc3 37.Rc3 Rc3 38.Rc3 Rc3 39.Kc3 Ke6 0–1. Szkodnikow_i_ofiar – marekt, ChessWorld.net, 2015.

6.a3 c5 7.b5 +=.

6.a3 c5 7.bc5 Bc5 8.0-0 +=.

6.a3 c6 7.0-0 a5 8.ba5 Ra5 (8...Qa5 9.Ne5+=) 9.d3 Qa8 (9...Bd6 10.c4+=) 10.Qc1 (10.Ne5 Ne5 11.Be5 Nd7+= (worse is 11...Ba3 12.Qd2 0-0 13.Bc3+=)) 10...Be7 (10...Bd6 11.h3 Bf3 12.Bf3+=) 11.h3 (11.c4 0-0+=) 11...Bh5 (11...Bf3 12.Bf3 b5 13.c4+=) 12.Re1 (12.c4 0-0+=) 12...0-0 (12...b5 13.c4+=) 13.Nfd2 (13.g4 Bg6+=) 13...Qa7 (13...b5 14.c4+=) 14.e4 (14.Nb3 Ra6+=) 14...Ra8 The pressure on the isolated pawn grows (14...d4 15.c3 Ne5 16.Qc2+=) 15.d4 (15.Nb3!? Ra6 16.g4=) 15...Ne4 (15...Bg6 16.e5 Ne8 17.Nb3–/+) 16.Ne4+= de4 Black launches an attack 17.Be4 Nb6 (17...Nf6 18.Bg2+=) 18.c4 Na4 19.g4 Bg6 20.Bc3 (20.Bg6!? hg6 21.Re4–/+) 20...Nc3–+ 21.Bg6 (21.Qc3 Be4 22.Re4–+) 21...Nb1 (21...hg6?! 22.Qc3 Bf6 23.Rd1–+; 21...fg6?! 22.Qc3 Bf6 23.c5+=) 22.Bf7 (22.Bb1 Qd4 23.Rd1 Qf6–+ (23...Qa1 24.Bh7 Kh7 25.Qa1+/–; 23...Ba3?? 24.Rd4 Bc1 25.Ra5+-)) 22...Kf7 23.Qf4 (23.Qe3 e5 (23...Ba3?! 24.Qe6 Kf8 25.Ra3 Na3 26.Qe7 Kg8 27.Qe6 Kf8 28.Qe7 Kg8 29.Qe6 Kf8=) 24.Rab1 Qd4 25.Qd4 ed4 26.Rb7 Re8–+) 23...Kg8 (23...Bf6 24.Rab1 Qb8 25.Qe4–+) 24.Rab1 Rf8 (24...Ba3?! 25.c5 Ra4 26.Qd6–+) 25.Qc7 (25.Qe3 e5! (25...Ba3?! 26.Qe6 Rf7 27.c5–/+) 26.Re2 Bh4–+) 25...Qd4 26.Qe7 (26.Re2 Qc4 27.Rbe1–+) 26...Qf2 27.Kh1 Qf3 28.Kh2 Ra3 (28...Ra3 29.Qa3 Qa3–+) 0–1. Lipskij,V (2140) – Kuehn,Pe1 (2380), European Club Cup, 2006.

6.a3 c6 7.0-0 Be7 8.d3 (8.Nd4 Qb6+=) 8...0-0 (8...a5 9.ba5 Qa5 10.Nbd2+=) 9.Nbd2 (9.c4 a5+=) 9...a5 10.ba5 (10.c3 e5+=) 10...Bf3 (10...Qa5 11.c4+=) 11.Bf3 Ra5 (11...Qa5 12.c4+=) 12.c4 Qa8 Increasing the pressure on the isolated pawn on a3 (12...Qc7 13.cd5 ed5 14.Qb3+=) 13.Qc1 (13.Qb3 b5+=) 13...Rc8 (13...b5 14.Qc3+=) 14.h4 (14.Qc3 e5+=) 14...Qa7 (14...b5 15.Qc3–/+) 15.g4 (15.cd5 ed5 16.e4 Ra8+=) 15...Ra8 The pressure on the isolated pawn grows 16.g5 Ne8 17.Nb1 (17.d4 b5 18.cb5 cb5–/+) 17...Qb8 (17...Bd6 18.cd5 ed5 19.Qe3–/+) 18.cd5+= ed5 19.Nc3 (19.e4 Bd6+=) 19...Qd6 (19...Ne5 20.Bh5–/+) 20.Bg2 Nc5 21.Qe1? (better is 21.Ra2–/+) 21...Qf4–+ 22.Bc1 (22.Qd1 Bd6 23.Re1 Qh4–+) 22...Qh4 23.f4 Qe1 24.Re1 Nb3 25.Rb1 Nc1 26.Rec1 Ba3 (26...Bc5 27.Kh2 Be3 28.Rf1–+) 27.Rc2 b5 28.e4 d4 29.Ne2 c5 30.e5 Rb8 31.f5 b4 32.Bd5 Nc7 33.Bc4 Na8 34.g6–/+ hg6 35.fg6 Nb6 36.Bf7+= Kf8 ½–½. Reynolds,P – O'Kearney,S, Dublin, 1993.

6.a3 c6 7.h3 Bf3 8.Bf3 a5 +=.

5.ef3 Ngf6 6.a3 e6 7.d4 Bd6 8.Bd3 a5 (8...0-0 9.0-0=+) 9.b5 c5 10.bc6 (10.dc5 Nc5 11.0-0 0-0=+) 10...bc6 11.Nc3 (11.Nd2 0-0=+) 11...0-0 12.0-0 Qe7 (12...Rb8 13.Bc1–/+) 13.g3 (13.Qd2 Rfb8 14.Rfb1 e5=+) 13...Rfb8 (13...Rab8 14.Ra2–/+) 14.Qc1 (14.Ra2 c5–/+) 14...c5 15.Re1 c4 16.Bf1 Rb7 (16...Ra7 17.Bg2–/+) 17.Rb1 (17.Bg2 Rab8 18.Rb1 Nb6–/+) 17...Rab8 18.f4 (18.Bg2!?–/+) 18...Nf8–+ 19.Bg2 (19.a4 Bb4 20.Ra1 Qd6–/+) 19…Rb2! (19...Rb2 20.Rb2 Ba3 21.Rb8 Bc1 22.Rc1 Qa7–+) 0–1. Sternik,Ryszard – Benassi,Aspasio, corr b4/02/08, 2002.

5.ef3 Ngf6 6.c4 dc4 7.Bc4 e6 8.a3 a5 9.b5 Nb6 10.Be2 Nbd5 ½–½. Hilbert,Stephan J – Kruse,Herbert (2380), FICGS, 2015.

5.ef3 Ngf6 6.c4 e6 7.c5 Be7 8.d4 0-0 9.Bd3 c6 10.Qc2 Qc7 11.Nd2 e5 (11...a5 12.ba5 Ra5 13.0-0=) 12.Kf1 (12.0-0!? Rfe8 13.Rfe1 ed4 14.Bd4+=) 12...Rfe8+= 13.h4 ed4 14.Bd4 a5 15.ba5 Ra5 16.Nb3 Ra4 17.Re1 Qb8 18.Qb2 (18.h5 h6=) 18...Bf8 (18...Qa7!?–/+) 19.Re8= Qe8 20.g3 (20.h5!?=) 20...Qa8–/+ 21.Bb1 b6 22.Bf6 Nf6 (worse is 22...gf6 23.Qc2 Bc5 24.Qh7 Kf8 25.h5+=) 23.cb6 Qa6 24.Kg2 Qb6 25.Qc2 Rc4 26.Qf5 Rb4 27.g4 Qc7 28.g5 (better is 28.Rc1!? Rb6 29.Nc5–/+) 28...g6–+ 29.Qc2 Nh5 30.Rc1? (better is 30.Kf1–+) 30...Nf4 31.Kf1 Qd7 32.Qc6 (32.Qb2 Qh3 33.Ke1–+) 32...Qh3 33.Ke1 Qf3 34.Qa6 Rc4! 0–1. Sturc,Gustav (2140) – Novak,Ivan (2265), Bratislava Doprastav op, 2008.

5.ef3 Ngf6 6.d4 e6 7.a3 a5 8.b5 c5 (8...Bd6 9.Bd3=+) 9.bc6 (9.c4 Rc8=+) 9...bc6 10.c4 Bd6 11.Qa4 (11.c5 Bf4=+) 11...Qc8 (11...c5 12.dc5 Bc5 13.cd5 ed5 14.Bb5 Qe7 15.Kd1=+) 12.cd5 (12.c5 Bf4=) 12...cd5=+ 13.Nd2 (13.Nc3 0-0=+) 13...0-0 14.Bd3 Bf4 (14...Rb8 15.Rc1 Qb7 16.Rb1=+) 15.Rc1 Bd2 (15...Qb7 16.Bc3=+) 16.Kd2 Qb8 17.Bc3 Exerts pressure on the isolated pawn (17.Rc2 Nb6 18.Qb5 Qf4 19.Ke2 Nbd7=+) 17...Nb6 (17...Qf4 18.Kd1–/+) 18.Qb5 Nc4 (18...Rc8 19.Ke2=+) 19.Bc4=+ dc4 20.Qc4 (20.Qb8 Rfb8 (worse 20...Rab8 21.Ba5 Rfc8 22.Rc2+=) 21.Rb1 a4–/+) 20...Rc8–/+ 21.Qd3 Nd5 22.Ba1?? (better 22.Rc2–/+) 22…Qf4–+ (22...Qf4 23.Qe3 Ne3 24.fe3 Qg3–+) 0–1. Alcaide Gomez,Fernando (2090) – Korneev,Oleg (2610), Seville Villa de Coria op 9th, 2003. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.h3 Bf3)

5.gf3 e5 6.a3 Ngf6 7.c4 (7.Nc3 a5 8.Rg1 ab4 9.ab4 Ra1 10.Qa1 Bb4 11.Rg7 Bf8=+) 7...d4 (7...dc4 8.Qc2–/+) 8.Bg2 c5 (8...Qe7 9.f4 0-0-0 10.Qa4=) 9.f4= ef4 10.Bb7 Rb8 11.Bg2 Bd6 12.d3 0-0 13.Nd2 Qe7 (13...Ne5 14.0-0=) 14.0-0 Rfe8 15.Re1 Ne5 16.Qc2 a6 17.Nb3 Qa7 18.Rab1 g5 (18...f3 19.ef3 Ng6 20.bc5 Re1 21.Re1 Bc5 22.Bc1=) 19.e3 (19.Qd2 h6+=) 19...de3= 20.d4 cd4 21.Qf5 Qe7 (21...ef2 22.Kf2 h6 23.c5+/– (23.Bd4?! Qe7+=; 23.Nd4 Nc4 24.Qf6 Bf8–/+)) 22.fe3+/– (< 22.Qg5 Kh8 23.Bd4 f3 24.Qe3 fg2=) 22...Ng6 (22...de3 23.Qg5 Kh8 24.Qf4 Ned7+-) 23.c5+- Bc7 24.Nd4 Qe5 25.e4 Nh4 26.Nc6 Nf5 27.Be5 (27.Ne5?! Be5 28.ef5 Bb2 29.Re8 Re8 30.Rb2 Re3+=) 27...Be5 28.ef5 Bc3 29.Nb8 Be1 30.Na6 Re2 31.c6 (31...Bf2 32.Kh1+-) 1–0. PeterRs – marekt, ChessWorld.net, 2008.

6.a3 Bd6 7.c4 d4 (7...dc4 8.Bc4 Ngf6 9.d4=) 8.c5= Be7 9.Bc4 Bg5 10.0-0 Ne7 11.d3 (11.f4 Bf4 12.Qf3 0-0=+) 11...Ng6 (11...c6 12.Nd2=) 12.g3 0-0 13.Nd2 (13.Re1 a5=) 13...Bd2=+ 14.Qd2 Qf6 15.Qe2 b6 16.cb6 ab6 17.Qe4 (17.Rfc1 c5=+) 17...c5 18.Rfe1 Qd6 (18...Ra7=+) 19.h4 (19.Qb7!?=+) 19...cb4–/+ 20.ab4 Ra1 21.Ra1 b5 (21...Qb4 22.Ba3 Qa5 23.h5=+) 22.Qd5=+ Qd5 (22...Qb4!? 23.Qb5 Qb5 24.Bb5 Rb8=+) 23.Bd5= Ne7 24.Bb7 Nb6 25.f4 Na4 26.Bc1 Rb8 27.Bg2 ef4 28.Bf4 Rd8 29.Bc7 Rd7= 30.Be5 Ng6 31.Bb8 Rd8 32.Bc7 Rc8 33.Bd6+= Rd8 34.Bc5 Ne5 35.Ra3 h5 36.f4 Ng4 37.Be4 g6 38.Ra1 Kh7 39.Kg2 Ne3 40.Kf2 Rd7 41.Re1 Kg8 42.Bf3 Rd8 43.Rc1 Rc8= 44.Bb7 Rc7 45.Ba6 Nc5 46.Rc5 Ng4 47.Kf1 Ne3 48.Ke2 Rc5 49.bc5 Nd5 50.Kd2 Nc7 51.Bc8 Kf8 52.Kc2 Nd5 53.Kb3 Ke8 54.Ba6 Nc7 55.Bb7 Kd8 56.Kb4 Kd7 57.Ka5 (57...Kd8 58.Bc6+-) 1–0. jaskier (2115) – pierre (2075), internet, 2007.

6.a3 Bd6 7.f4 a5 =.

6.a3 Ngf6 7.d4 Bd6 8.Be2 0-0 9.0-0 Re8 10.Nd2 Nh5 11.Re1 Qg5 12.Bf1 ed4 13.Nb3 Ne5 (13...Re1!? 14.Qe1 Nf4–/+) 14.Nd4+= (14.Bd4? Qf4 15.Be5 A) 15...Re5?! 16.g3 Re1 17.Qe1 (17.gf4? Rd1 18.Rd1 Nf4–+) 17...Qf3 18.Bg2+=; B) 15...Be5–+) 14...Ng6 15.Bc1 Ngf4 16.Bf4 Qf4 (16...Nf4 17.g3 Re1 18.Qe1 Be5+=) 17.g3 (better is 17.Re8!? Re8 18.g3+=) 17...Re1–+ 18.gf4 Rd1 19.Rd1 Nf4 20.Re1 Kf8 21.Nf5 Rd8 22.Nd6 Rd6 23.Kh2 a6 24.Kg3 g5 25.h4 h6 26.hg5 hg5 27.Kg4 f6 28.Bd3 Re6 29.Re3 Ke7 30.Bf5 Re3 31.fe3 Ng2 32.e4 Ne3 33.Kg3 Nf5 34.ef5 Kd6 35.f4 gf4 36.Kf4 b5 37.c3 c6 38.Ke3 Ke5 39.Kd3 Kf5 40.Kd4 Ke6 (better is 40...Kg4 41.Kc5–+) 41.Kc5 (41.Kd3–+) 41...f5 42.Kc6 f4 43.Kb6 f3 44.Ka6 f2 45.Kb5 f1Q 46.Ka4 Qa6 (46...Kd6 47.Kb3 Qb1 48.Ka4 Kc6 49.Ka5 Qf1 50.c4 Qc4 51.a4 Kb7 52.b5 Qc3) 47.Kb3–+ d4! 48.cd4 Kd5 49.Kb2 Kc4 50.d5 Qf6 51.Ka2 Qf2 0–1. Luneau,Gilles (1820) – Korneev,Oleg (2540), Lyon op, 1995. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.h3 Bf3 5.ef3 e5)

6.a3 Ngf6 7.d4 Bd6 8.de5 Be5 9.Be5 Ne5 10.f4 (10.Be2 Qd6=+) 10...Ng6–/+ 11.g3 0-0 12.Be2 Qd7 13.h4 h6 (13...Rfe8 14.h5 Ne7 15.0-0–/+) 14.0-0 (14.h5 Ne7–/+) 14...Rfe8=+ 15.Nd2 (15.Re1 Re7–/+) 15...Re7–/+ 16.Nb3 Rae8 17.Nc5 (17.Re1 Qh3 18.Nd4 c6–/+) 17...Qf5 (17...Qh3 18.Bf3 c6 19.Rc1–/+) 18.Qd3 (18.Re1 c6–/+) 18...Nh4 (18...Qh3 19.Bf3 c6 20.Bg2–/+) 19.Qf5? (better 19.gh4!? Qf4 20.Bf3=+; better 19.gh4!? Qf4 20.Bd1=+) 19...Nf5–+ 20.Bd3 Nd6 21.f3 b6 (21...Kf8 22.Kf2–/+) 22.Nb3 Kf8 23.Nd4 (23.Kf2 c6–/+) 23...c5 24.Nb5 Nb5 (24...Nc8 25.Rad1–+) 25.Bb5 Rc8 26.Rfe1 (better 26.bc5 Rc5 27.Bd3–+) 26...Re1 27.Re1 cb4 28.ab4 Rc2 29.Ra1 Rb2 (29...Nh5 30.Ra7 Ng3 31.Rb7–+) 30.Ra7 Rb4 31.Be2 (31.Bf1 g6–+) 31...Nh5 32.Rd7 (32.Kf2 Rb2 33.Rd7 Ng3 34.Kg3 Re2 35.Rd5 Ke7–+) 32...Ng3 33.Kf2 Ne2 34.Ke2 Rf4 (34...d4 35.f5–+) 35.Rd5 Rf6 (35...Ke7 36.Re5 Kd6 37.Rh5–+) 36.Rh5 (36.Ke3 Ke7–+) 36…Ke7 0–1. Popp,Tony – Jacobs,Bernd, IECG, 1999. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7 4.h3 Bf3 5.ef3 e5)

6.a3 Ngf6 7.Qe2 Bd6 8.Qb5 =+.

6.d4 Bb4 7.Nd2 ed4 8.Qe2 Ne7 9.Bd4 0-0 10.Qd3 Nc6 11.Be2 Qg5 12.Be3 Qg2 13.0-0-0 Nc5 (13...Nde5 14.Qd5 Rad8 15.Qe4 Bd2 16.Bd2–+) 14.Qf5 (14.Qd5 Rad8 15.Qg5 Bd2 16.Bd2 Qf2–+) 14...Ba3 (14...Bd2 15.Kd2 d4 16.Qc5 de3 17.Qe3 Rad8 18.Bd3–+) 15.Kb1 Qg6 16.Qf4? (16.Qd5 Qf6 17.Nc4–+) 16...Nb4 17.Bd3 (17.Ne4 Ne6 18.Qh4 de4 19.fe4–+) 17...Ncd3 18.cd3 (18.Qg4 Qc6 19.Nc4–+) 18...Qd3 19.Ka1 Qc3 20.Kb1 Qb2# 0–1. SupremeDalek – crafty, ICC, 1998.

6.d4 Bb4 7.Nd2 ed4 8.Be2 Qg5 9.g4 c5 10.a3 Ba5 11.Bb5 0-0-0 12.0-0 Qd2 13.Qd2 Bd2 14.Rad1 Bf4 15.c4 Ne5 16.Kg2 a6 17.Ba4 Nc4 18.Rb1 Ne7 19.Rfe1 Ng6 20.Bc1 Bc1 21.Rbc1 Nf4 22.Kg3 Nd3 23.Rc4 dc4 24.Re7 Nb2 0–1. Reichel,Anton – Butt,Christian, TWO (year?).

6.Qe2 Qe7 7.a3 0-0-0 8.Nc3 Ngf6 9.d4 ed4 10.Nb5 Re8 11.Qe7 (11.Na7? Kb8 12.Bd4 Qd8–+; 11.Nd4?? Qd6–+; 11.Bd4 a6 12.Na7 Kb8–/+) 11...Re7 (11...Be7 12.0-0-0 (12.Na7? Kb8 13.0-0-0 Ka7–+) 12...c5 13.bc5 Bc5 14.Nd4=) 12.Kd1= a6 13.Nd4 Re8 (13...g6 14.c4=) 14.Nf5 (14.c4 Ne5 15.cd5 Nd5=) 14...b5 (14...g6 15.Ne3 Bd6 16.c4=) 15.Bd3 (15.a4 Bb4 16.c3 Bc5=) 15...g6 16.Nd4 Kb7 17.a4 c6 18.Bc3 (18.ab5 ab5 19.Nc6 Kc6 20.Bf6 Nf6 21.Ra6 Kc7 22.Rf6 Bb4 23.Bb5+=) 18...Ne5 (18...Bg7 19.Be2=) 19.ab5 (19.Nc6 Kc6 20.ab5 Kc7 21.ba6 Nd3 22.cd3 Bg7+/–) 19...cb5= (< 19...ab5 20.Nc6 Nc6 21.Bf6+/–) 20.f4 Ned7 21.Ne2 Rg8= 22.f3 Rc8 23.Kd2+= Bd6 24.g3 Nh5 25.Rhg1 Rge8 26.f5 g5 27.Bd4 Bb4–/+ 28.c3 Bd6 29.Bf2 Ne5 30.Nd4 Nd3 31.Kd3 Nf6 32.Be3 h6 33.h4 Nd7 34.Bc1 b4 35.Bb2 Ne5 36.Kc2 Bc5 37.Rgd1 bc3 38.Bc1 gh4 39.gh4 Rg8 40.Rb1 Bb6 41.Re1 Rg2 42.Re2 Nf3 43.Rg2 Ne1 44.Kd1 Ng2 45.Bh6 Rc4 46.Bg7 Ne3 47.Kc1 Ka7 48.Rb4 Rb4 49.Nc6 Kb7 50.Nb4 a5 51.Nd3 Nf5 52.Bc3 Nh4 53.Kc2 Nf3 54.Kb3 d4 55.Bb2 Kc6 56.Ba3 Kd5 57.Bc1 Ne5 58.Ne5 Ke5 59.Kc4 f5 60.Kd3 f4 61.Bd2 f3 62.Bc1 a4 (63.Kd2 f2–+) 0–1. Pierred (2145) – Membrain (2355), Rated game, 2m + 0s, 2005.

6.a3 Ngf6 7.d4 (7.Bc3 a5 8.ba5 Bd6=+) 7...Bd6 8.Nd2 (8.Bd3 a5=+) 8...0-0 9.Be2 (9.Bd3 a5=+) 9...c6 (9...Nb6 10.Bc1–/+) 10.0-0 (10.Nb3 Nh5=+) 10...Nh5 11.g3 Qg5 12.h4 Qg6 13.Bd3 f5 14.Qe1 (14.Qe2 Rae8–/+) 14...Rae8 15.Kh2 (15.Kh1 e5–+) 15...e5 (16.Rg1 e4 17.fe4 fe4–+) 0–1. Rohde,Friedhelm (2550) – Rudbeck,Joergen, email 3GMM½–03, 1998.

6.Bc3 Ngf6 7.d4 c6 8.Bd3 Bd6 9.0-0 0-0 10.Re1 Qc7 11.Nd2 Nh5 12.Nb3 Nf4 13.Bf1 Ng6 14.Bd3 Rae8 15.Nc5 Nf4 16.Bf1 Nf6 17.g3 Ng6 18.Nd3 e5 19.de5 Ne5 20.Bg2 h5 21.a4 Ned7 22.Qd2 h4 23.gh4 a5 24.ba5 c5 25.Re8 Re8 26.Rb1 Re6 27.Ba1 c4 28.Nc1 Bf4 29.Qd1 Bh2 30.Kh1 Be5 31.Be5 Re5 32.Ne2 Qa5 33.f4 Re8 34.Rb5 Qa4 35.Nc3 Qa6 36.Rb1 Qa7 37.Kg1 Qc5 38.Nd5 Ne4 39.Be4 Re4 40.c3 Qc6 41.Ra1 g6 42.f5 Nf6 43.Ne3 Kg7 44.fg6 fg6 45.Ra8 Re7 46.Rd8 b5 47.Ng4 Qe4 48.Nf6 Kf6 49.Qd5 Qd5 50.Rd5 Rb7 51.Kg2 b4 52.cb4 Rb4 53.h5 Ke6 54.Ra5 gh5 55.Rh5 Kd6 56.Rh8 Ke5 57.Rc8 Kd4 58.f4 c3 59.f5 Rb6 60.h4 Rf6 61.Kf3 Rf5 62.Ke2 Rh5 63.Ra8 Kc4 64.Kd1 Kd3 65.Rd8 Ke4 66.Kc2 Rh4 67.Kc3 Rh2 ½–½. Project (2645) – gixxer (2825), ICC, 2003.

6.Nc3 Ngf6=+ 7.a3 c5 8.bc5 Bc5 9.Rb1 (9.d4 Bb6=+) 9...a6 (9...0-0 10.Be2=+) 10.Bd3 0-0 11.0-0 b5 12.a4 b4 13.Ne2 Qa5 14.c3 Rfb8 15.Bc2 Qc7 (15...bc3 16.Bc3 Bb4 17.Re1=+) 16.cb4 (16.d4 Bd6–/+) 16...Rb4–/+ 17.Bc3 (17.Nc1 Rab8 18.Nd3 R4b7=+) 17...Rb1 18.Bb1 Rb8 19.d4 Bb4 20.Bb4 (20.Qd3 Qc6–/+) 20...Rb4 21.Bc2 (21.Bd3 Qa5–/+) 21...Nb6 (21...Rb2 22.Bd3–/+) 22.Qd3 a5 23.Rc1 Nc4 24.Bb3=+ Nd7 25.Rb1 Qb8 26.Bc2 Nf6 27.Rb4 Qb4 28.Qc3 Nd7 29.f4 Ndb6 30.f3 Qe7–/+ 31.Nc1 Qa3 32.Qa3 Na3 33.Bb3 h5 34.h4 Nac4 35.Kf2 g6 36.Nd3 Kg7 37.g3 Nd2 38.Bc2 Kf6 39.g4 Ndc4 40.Nc5 Kg7 41.Bb3 Nd6 42.Ke3 Kf6=+ 43.Ke2 Ke7 44.Bc2 Nbc4 45.Kf2 Kd8 46.f5 ef5 47.gh5 gh5 48.Nd3 Ne8 49.Nf4 Nf6 50.Bf5 Ke7 51.Bc2 Kd6 ½–½. Johannes,Jan – Mertes,Gerhard, 5.CH/2 CiF, 2001.

6.c4 Bb4?? 7.Bg7 Qg5 8.Bh8 +-.

6.c4 dc4–/+ 7.Bc4 Qg5 (7...Bb4? 8.Bg7 Qg5 9.Bh8 Qg2 10.Ke2+-) 8.0-0 Bd6 9.d4 (9.Qe2 Ngf6 10.a3 Nh5–/+) 9...Nb6–/+ (9...Bb4?! 10.d5=) 10.Bd3 Nf6 (10...Bb4 11.Nc3–/+) 11.Nc3 (11.a3 a5=+) 11...Bb4 (11...Qf4 12.g3 Qh6 13.Kg2 Bb4 14.Ne4–/+) 12.Qc2 (12.Ne4 Qh4–/+) 12...Bc3 13.Bc3 0-0 (13...Nfd5 14.Bd2 Qh4 15.a4–/+) 14.Rab1 (14.Bb4 Rfc8–/+) 14...Rfd8 15.Rfd1 (15.Rfe1 Qh4–/+) 15...Qh4 16.Bd2 c6 (16...Rac8 17.Be3–/+) 17.a4 Qd4 18.Bb4 (18.Ba5 Qh4 19.Bb6 ab6 20.Rb6 Rd7–/+ (20...Qa4?? 21.Bh7 Nh7 22.Qa4 Ra4 23.Rd8 Nf8 24.Rb7+-; 20...Ra4 21.g3 Qd4 22.Bh7 Nh7 23.Rd4 Rdd4 24.Rb7+/–)) 18...Qh4 19.Be7 (19.a5 Nbd5 20.Bd2 Rab8–/+) 19...Rd5–+ 20.Rb4 Qh6 21.f4 c5 22.Bc5 Rc8 23.Be2 Nfd7 24.Rb5 g6 25.Rd5 Nd5 26.f5 Nf4 27.fe6 fe6 28.Rb7 Rc5 29.Qb2 Rc1 30.Kh2 Ne2 31.Qe2 Qf4 32.g3 Qd4 33.Qe6 Kf8 34.Qe3 Qd1 35.Qc1 Qc1 36.Rd7 Qf1 37.Rd2 g5 38.a5 Ke7 39.Rb2 Ke6 40.Rc2 a6 41.Ra2 h5 42.Rb2 Ke5 43.Rc2 Ke4 44.g4 hg4 45.hg4 Qd3 46.Rc6 Kf3 47.Rf6 Ke2 48.Kg2 Qd5 49.f3 Ke1 50.Rb6 Qd2 51.Kg1 Qa2 52.f4 gf4 53.Rb8 f3 (54.Re8 Kd1 55.Rd8 Kc1 56.Rc8 Kb1 57.Rb8 Ka1 58.Rb2 Qb2 59.Kf1 Qe2 60.Kg1 Qg2#) 0–1. teoretic (2000) – pierre (2200), internet, 2007.

6.Qe2 Bb4?? 7.Bg7 Qe7 8.Bh8 +-.

6.Qe2 Ngf6 7.Qb5 Rb8 =+.

6.Qe2 Ngf6 7.Qb5 c5 8.Qb7 cb4 9.a3 (9.Bf6 gf6 10.c3 Qc8+=) 9...Qc8 10.Qc8 (10.Ba6 Qb7 11.Bb7 Rb8+=) 10...Rc8 11.Bd3 a5 (11...Rb8 12.ab4 Rb4 13.Bc3–/+) 12.0-0 (12.ab4 ab4 13.Ke2 Bc5+=) 12...Bd6 13.ab4 ab4 0–1. Walker,John T (1940) – Zylla,Johannes (2265), corr WSTT/3/06/Semifinal, 2008.

5.Nc3 e6 =.

5.d3 Bf3+= 6.ef3 e6 7.a3 Ngf6 8.f4 (8.c4 c5 9.cd5 Nd5 10.bc5 Nc5+=) 8...c5 9.c3 (9.Qd2 Qb6–/+) 9...Bd6–/+ 10.g3 h5 (10...0-0 11.Bg2–/+) 11.h4 (11.Nd2 Qb6+=) 11...Qb6 (11...a5 12.bc5 Nc5 13.c4+=) 12.Qe2 (12.Be2 a5+=) 12...0-0–/+ 13.Bg2 Rac8 (13...Rae8 14.0-0+=) 14.0-0+= e5 (14...Rfe8 15.Re1+=) 15.fe5 Ne5 16.d4 (16.Bc1 Neg4+=) 16...cd4+= 17.cd4 Nc4 18.Bc3 Rfe8 19.Qd3 Ne4 20.Ra2 (20.Re1 Qc6= (worse is 20...Nc3 21.Nc3 Nb2 22.Re8 Re8 23.Qc2+/–)) 20...Qc6 (worse is 20...Nc3 21.Nc3 Bb8 22.Bd5+/–) 21.Ba1 Qd7 (21...b5 22.Re2+=) 22.Nc3 f5 23.Nd5 Bg3 24.fg3 Qd5 25.Re2 Ncd6 26.Bb2 (26.Rfe1 Qf7=) 26...Rc7 (26...b5=) 27.a4 (27.Rfe1!?=) 27...Qc4+= 28.Rf3 (28.Qc4 Rc4 (worse is 28...Nc4 29.Rf5 Rce7 30.Rf4+-) 29.Rf5 Nf5 30.Be4 Kh8–+) 28...Qb4–/+ 29.Rf5 Nf5 30.Be4 g6 Attacks the isolani on d4 31.Bf5 Re2 32.Qe2 gf5 33.Qe8 Qf8 34.Qh5 Qf7 35.Qg5 Qg7 36.Qe3 Qg4 37.Qb3 Kh7 38.Qd3 Qe4 39.Qe4 fe4 40.d5 Rd7 41.Bd4 Rd5 42.Ba7 Ra5 43.Bb6 Ra4 44.Kf2 Ra3 45.Bc5 (45.g4 Rh3 46.Bd8 Rf3 47.Kg2 b5–+) 45...Rf3 46.Kg2 Kg6 (46...Rc3 47.Bb6–+) 47.g4 b5 48.Be7 White prepares g5 48...Rb3 49.Bd6 Rb1 (49...b4 50.Bf4–+) 50.Kg3 (50.Bf4 Kg7 51.h5 b4 52.Be5 Kg8–+) 50...b4 51.h5 (51.Kf4 Kf7 52.Ke4 b3–+) 51...Kh7 52.g5 (52.Kf4 b3 53.Be5 b2 54.Bb2 Rb2 55.Ke4 Kh6–+) 52...b3 53.g6 Kh6 54.Bc5 b2 (54...Kh5?? 55.g7 e3 56.Be3+-) 55.Ba3 (55.Kg4 Rg1!! 56.Bg1 b1Q 57.Be3 Kg7 58.Bd4 Kg8–+) 55...e3 56.Kg4 Kg7 57.Bb2 Rb2 58.Kf3 e2 59.Kf2 e1Q! 60.Ke1 Rh2 0–1. andytop10 (2040) – marekt (2160), gameknot.com, 2016.

5.e3 Ngf6 (--> 1.b4 d5 2.Bb2 Bg4 3.h3 Bh5 4.Nf3 Nf6 5.e3 Nbd7).

5.g4 Bg6= 6.h4 f6 (6...h6 7.Nc3 Ngf6 8.Rg1+=) 7.h5 (7.Nc3 e6 8.a3 a5=) 7...Bf7= 8.e3 e5 9.a3 Bd6 10.Nc3 c6 11.Nh4 g6 (11...Nh6 12.Nf5 Nf5 13.gf5=) 12.Bg2 (12.b5 Ne7=) 12...Ne7+= 13.Qe2 Qc7 14.hg6 hg6 15.0-0-0 0-0-0 16.g5 f5 Black prepares e4 (16...Nf5 17.Nf5 gf5 18.gf6 Nf6 19.f4+=) 17.Nf3 e4 18.Nd4 Be5 19.Nb3 Rde8 (19...Rh1 20.Rh1 Rh8 21.Rh8 Bh8 22.Na4 Bb2 23.Kb2+=) 20.f4 ef3 21.Qf3 Qd8 (21...Kb8 22.Kb1+=) 22.Ne2 Bb2 23.Kb2 Rh1 (23...Ne5 24.Qf4 Nc4 25.Ka2 Rh1 26.Bh1=) 24.Rh1= Rh8 25.Ned4 Rh1 26.Bh1 Qh8 27.Bg2 Qh4 28.Qf4 Qf4 29.ef4 Kc7 30.Nf3 Kd6 31.Bf1 b6 32.d4 Be8 33.Kc3 Ke6 34.Kd2 Nc8 35.Ne5 Nb8 36.Bd3 Nd6 37.Nc1 Nb7 (37...Ne4 38.Ke3+=) 38.Ne2 a5 39.c3 ab4 40.ab4 b5 (40...Nd6 41.Ng3+=) 41.Ng3 (41.Ng1 Nd8+=) 41...Kd6 42.Nf3 (42.Nf5 gf5 43.Bf5 Nd8=) 42...Nd7= 43.Ke3 Nf8 44.Nd2 Kc7 45.Nb3 Nd7 46.Nc5 Nbc5 (46...Nd6 47.Bc2=) 47.bc5 Nc5?? (better is 47...Bf7+=) 48.dc5+- Kd7 49.Be2 Bf7 50.Kd2 Be6 51.Kc2 Kc7 52.Bd3 Kb7 53.Kb3 Bc8 (53...Kc7+-) 54.Kb4 Bd7 55.Bc2 (55.Bf5 gf5 56.g6 Kc7+-) 55...Be6 56.Bd3 Bd7 57.Bc2 ½–½. Madina Yadarola,M1 (2280) – Plazuelo Pascual,Juan (2120), TCh–Madrid, 2014. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Nd7)

4.a3 Bd6?? 5.Bg7+- Nd7 (5...Bf3 6.ef3 (6.Bh8?! Bh5+-) 6...Be5 7.Be5+-) 6.Bh8 f6 7.e3 (7.Nc3 Kf7 8.e4 Ne7+-) 7...Qe7 8.Be2 (better 8.c4!? dc4 9.Nc3 0-0-0+-) 8...0-0-0 9.d4 (better 9.Nd4!? Be2 10.Qe2 Nh6+-) 9...Nh6 10.Nbd2 Rh8 11.c4 Qg7 (11...c6 12.Qa4 dc4 13.Nc4+-) 12.c5 Be7 (12...Bf8 13.c6! Nb6 14.cb7 Kb7 15.Nb3+-) 13.Qa4 e5 (13...c6 14.b5 Nb8 15.Qa7 Bf3 16.gf3+-) 14.Qa7 c6 (14...Nb8 15.b5 e4 16.c6 bc6 17.bc6+-) 15.g3 (15.b5!? cb5 16.Rb1 Nf7 17.Rb5 Nd8+-) 15...e4 16.Ng1 Rf8 (16...Nb8 17.Bg4 Ng4 18.Rb1+-) 17.Bg4 Ng4 18.Ne2 (better 18.b5 Nb8 19.Rb1 cb5 20.Rb5 Bd8+-) 18...Qg8 (18...Qf7 19.Rb1 Nde5 20.de5 fe5 21.b5 Qf2 22.Kd1 Ne3 23.Kc1+-) 19.Nf4 (19.Rb1!? Nb8 20.Nf4 Rd8+-) 19...Nge5 (19...f5 20.b5! cb5 21.Rb1+-) 20.h3 (20.de5!? fe5 21.Nb3 Bd8+-) 20...Nd3 (20...Ng6 21.Rb1 Nf4 22.gf4+-) 21.Ke2 (21.Nd3 ed3 22.Nb3 Bd8+-) 21...Nf4 22.gf4 f5 (22...Qg6 23.Rag1 Qh5 24.Ke1+-) 23.Rag1 Qf7 24.Ke1 Bh4 25.Qa4 (25.a4 Rg8+-) 25...Rg8 (25...Kb8 26.b5 cb5 27.Qb5+-) 26.Qd1 (better 26.Qa8!? Nb8+-) 26...Kc7 27.Nf1 (27.a4 Ra8+-) 27...Ra8 28.a4 b6 (28...Nf8 29.b5+-) 29.Ng3 bc5 (29...h6 30.Kd2+-) 30.bc5 Rg8 (30...Nf8 31.Kd2+-) 31.Qe2 (31.a5 Ra8 32.Qa4 Ra6+-) 31...Kb7 32.Kd2 Bd8 (32...Ra8 33.Ra1 Ra5 34.Rhb1 Kc7 35.Qh5 Qh5 36.Nh5+-) 33.Rb1 (better 33.Nf5 Ka7 34.Nd6 Ba5 35.Kc1 Qe6+-) 33...Ka7 34.Rb2 Ba5 (34...Bf6 35.Nf5 Rb8 36.Rb8 Nb8 37.Nd6+-) 35.Kc2 Rb8 (35...Rc8 36.Rhb1 Rb8 37.Qh5 Rb2 38.Rb2 Qh5 39.Nh5+-) 36.Rhb1 Rb2 37.Rb2 Nb8 (37...Nf8 38.Qh5 Qh5 39.Nh5+-) 38.Qd1 (better 38.Qh5!? Qh5 39.Nh5 Na6+-) 38...Na6 39.Qb1 (39.Qh5 Nb4 40.Kd1 Qh5 41.Nh5 Nd3+-) 39...Qf6 (39...h6 40.Rb3+-) 40.Rb7 Ka8 41.Rh7 Nc5 (41...Nb4 42.Kd1 Qe6+-) 42.Nh5 (42.Kd1 Qd6 43.dc5 Qb8 44.Qb8 Kb8 45.Nf5 Bb4+-) 42...Qh4 (42...Qd6 43.dc5 Qc5 44.Kd1+-) 43.Rh8 (43.dc5 Qf2 44.Kb3 Qe3 45.Ka2 Qd2 46.Qb2 e3+-) 43...Bd8 44.Qe1 (44.dc5 Qf2 45.Kb3 Qe3 46.Ka2 Qd2 47.Qb2+-) 44...Ka7 (44...Ne6+-) 45.Rd8 (45.dc5 Bc7 46.Rh7 Qd8+-) 45...Qd8 46.dc5 Ka6 (46...d4 47.ed4 Qd5 48.Qb4 Qa2 49.Kd1+-) 47.Ng3 (better 47.Qb4 d4 48.ed4 Ka7+-) 47...Qf8 (47...d4 48.Qb4 Ka7 49.Nf5 d3 50.Kd2+-) 48.Qc3 (better 48.Qb4 Ka7 49.Qb6 Ka8 50.Qc6 Kb8 51.Qb6 Kc8 52.c6 Qf7 53.Nf5 Qf5 54.Qb7 Kd8 55.c7 Ke8 56.c8R Qc8 57.Qc8 Ke7 58.a5 Kf7 59.a6 d4 60.a7 d3 61.Kd2 Kg6 62.Qe6 Kh5 63.a8Q Kh4 64.Qh8) 48...Qh6 (48...Kb7 49.Qb4 Kc8 50.Qb6+-) 49.Nf5 (49.Qb3 Ka7 50.Nf5 Qe6 51.Qb6 Ka8 52.Qd8 Kb7 53.Nd6 Qd6 54.Qb6 Kc8 55.cd6 Kd7 56.Qc7 Ke6 57.Qe7 Kf5 58.Qf7) 49...Qh3 50.Nd6 (50.Qb4 Ka7 51.Qa5 Kb8 52.Qd8 Ka7 53.Qc7 Ka8 54.Nd6 Qh7 55.Qh7 d4 56.Qb7) 50...Qf1+- 51.Kb3 Qb1 52.Qb2 Qd3 53.Ka2 Qc4 54.Qb3 (54.Qb3 Qc5 55.Qb7 Ka5 56.Kb3 Qb6 57.Qb6 Kb6 58.a5 Kc7 59.a6+-; 54.Nc4 Ka7 55.Nd6 d4 56.Qb7) 1–0. Clapp,Joseph D – Upton,We Bill, British Chess Championships, 2016.

4.a4 Nf6 5.b5+= Bd6 6.e3 Nbd7 7.Be2 0-0 8.0-0 c5 9.h3 +=.

4.a4 Qh4?? 5.b5 (5.Nh4 f6+-) 5...Nd7?? (5...Bf3 6.ef3 Nf6 7.g3+=) 6.e3 (better is 6.Nh4 e5 7.a5+-) 6...Ngf6?? (6...Qh5 7.Be2=) 7.d4?? (7.Nh4 Bd1 8.Kd1 Ne4+-) 7...Bd6?? (7...Qh5 8.Be2+=) 8.Bd3?? (8.Nh4 Bd1 9.Kd1 Ng4+-) 8...c5?? (better is 8...Bf3 9.Qf3 e5 10.de5 Ne5 11.Be5 Be5+=) 9.bc6+- bc6 10.0-0?? (better is 10.Nh4 Bd1 11.Kd1+-) 10...e5 (better is 10...Bf3 11.h3 Bd1 12.Rd1 g5–+) 11.c4 (better is 11.Nh4 Bd1 12.Nf5+-) 11...Bb4?? (better is 11...Bf3 12.Qf3 e4–+) 12.Qc2 0–1. Perez Cortes,Norman Gunter – Buss,Michael, corr 4AMM–02, 1997.

4.c4 Nd7 5.e3 Ngf6 (5...Bb4?? 6.Bg7 Bf3 7.gf3 dc4 8.Bc4+-) 6.b5 Rc8 7.cd5 ed5 8.Be2 Bd6 9.0-0 0-0 10.Nc3 Nb6 11.d4 Re8 12.Rc1 c6 13.bc6 bc6 14.Na4 Rb8 15.Nc5 Bf3 16.Bf3 Nc4 17.Bc3 Qe7 18.Qa4 Rb5 19.Be2 Qc7 20.h3 Bc5 21.dc5 Ne4 22.Bc4 dc4 23.Bd4 Qa5 (worse is 23...Nc5 24.Qc4 Ne6 25.Qc6 Qc6 26.Rc6 Nd4 27.ed4+/–) 24.Qd1 Rb7 (worse is 24...Qa2 25.Qg4 g6 26.Qd7+/–) 25.Qg4 g6 26.Qf4 Rd7 (26...Qa2 27.f3 Nd2 28.Qf6+-) 27.Rc4 Qa2 28.Rb4 Qe6 29.Ra1 f5 30.Rb8 Nd2 31.Ra6 Qe7 32.Ra2 Ne4 33.Re8 Qe8 34.Rb2 Kf7 35.Rb8 Qe7 36.Rh8 Nf6 37.Qh4 Ke6 38.Bf6 Qf6 39.Qc4 Rd5 40.Rh7 Qa1 41.Kh2 Qe5 42.g3 Qb2 43.Kg2 Qb5 44.Qh4 Rd7 45.Qg5 (45.Qg5 Rh7 46.Qg6 Kd5 47.Qf5 Kc4 48.Qh7 Qc5 49.Qc2 Kb4 50.Qc5 Kc5 51.h4+-) 1–0. Liptak,Tibor – Radnoti,Bela, HUN–ch E355 corr, 1998. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 e6)

4.Ne5 Bf5=+ 5.a3 Nd7 (5...Nf6 6.c4=+) 6.e3 (6.Nd7 Qd7 7.e3 a5=) 6...c6 (6...Ne5 7.Be5 f6 8.Bg3=) 7.Nd7= Qd7 8.Be2 Nf6 9.d3 a5 (9...0-0-0 10.Bd4=) 10.ba5 (10.g4 Bg6 11.Bf6 gf6=+) 10...Ra5 11.Nd2 (better is 11.0-0=) 11...Be7?? (better is 11...b5=) 12.g4+- Bg6 (12...Bg4 13.Bg4 b5 14.c4+-) 13.g5 0-0 (13...Qd8 14.gf6 Bf6 15.Bf6 Qf6+-) 14.gf6 Bf6 (14...gf6 15.Rg1+-) 15.Bf6 gf6 16.Nb3 Qd6 (16...Raa8+-) 17.Na5 b5 (17...Ra8 18.Qd2 Ra7 19.h4+-) 18.Qd2 (18.a4 Ra8 19.Qd2 b4+-) 18...c5 19.0-0 (19.a4 b4+-) 19...Qe5 (19...Kh8 20.Kh1+-) 20.Rab1 Kh8 21.Rb5 Rg8 22.Kh1 Qg5 23.Bf3 Bh5 24.Qd1 Bg6 25.Rc5 Qf5 26.Nc6 Qh3 27.Bg2 Qh4 28.c4 Bf5 29.cd5 Rg2 30.Kg2 Bh3 31.Kh1 Bg4 32.f3 Bh3 33.Rg1 h5 34.de6 fe6 35.Qe1 Qe1 36.Rh5 1–0. meru – Nimrod, ICS game, 1997.

5.d4 Ngf6 6.Nbd2 Be7 7.h3 Bh5 8.g4 Bg6 9.e3 Nb6 10.c4 dc4 11.Nc4 Nbd5 12.Bg2 Ne4 13.Rc1 h5 14.Nfd2 Nd2 15.Nd2 Bh4 16.Qe2 c6 17.Nf3 Kf8 (17...Bf6!?=) 18.Nh4+= Qh4 19.Qf3 Nf6 20.Qf4 Ne8 (20...Rd8+=) 21.g5 (better is 21.b5 cb5 22.Bb7+/–) 21...Qf4= 22.ef4 Bd3 23.Kd2 Bb5 24.Rhe1 Nd6 25.Bf1 Bf1 26.Rf1 Rd8 27.Ke2 Nf5 28.Rfd1 Rd5 29.Rc5 Rd6 30.b5 Ne7 31.a4 Ke8 32.Ba3 Rd7 33.Rc4 cb5 34.ab5 Nd5 35.Rc8 Rd8 36.Rd8 Kd8 37.Kf3 Kd7 38.Rc1 a6 39.ba6 ba6 40.Rb1 Rc8 41.Bc5 Rc7 42.Rb8 Rc8 43.Rb7 Nc7 44.Ke4 a5 45.Ra7 Ra8 46.Ra8 Na8 47.f5 a4 48.fe6 fe6 49.g6 Nc7 50.Kd3 Nd5+= 51.Bf8 Nf4 52.Ke4 Ng6 53.Bg7 a3–+ 54.d5 e5! 55.f4 ef4 56.Bc3 a2 57.Ba1 Kd6 58.Bb2 f3! 59.Kf3 Kd5 60.Ba1 Ke6 61.Ke4 Ne7 62.Kf4 ½–½. Iverson,B – Lang,B, Lansing–ch MI op, 1988. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 e6)

5.e3 Ngf6 6.Be2 c6 7.c4 a5 8.b5 c5 9.d3 Be7 10.h3 Bf3 11.Bf3 0-0 12.0-0 Qc7 13.Nc3 dc4 14.dc4 Rad8 15.Qc2 Ne5 16.Be2 b6 17.f4 Ng6 18.Nd1 Rd7 19.Nf2 Rfd8 20.Bc3 Ne8 21.Ng4 f5 22.Ne5 Ne5 23.Be5 Qc8 24.Rad1 Bf6 25.Bf6 Nf6 26.Bf3 Rd1 27.Rd1 Rd1 28.Qd1 Qd7 29.Qd7 Nd7 30.e4 e5 31.ef5 ½–½. Huber,Greg – Hughey,Micah, Alberta, 2000.

5.b5 Bd6 6.a4 (6.e3 0-0 7.Be2 a6 8.Nc3 Qd7 9.a4+=) 6...0-0 (6...Nbd7 7.a5 a6 8.ba6 ba6 9.e3–/+) 7.g3 (7.e3 Re8 8.Be2 e5 9.0-0+=) 7...a6 (7...Bf3 8.ef3 Nbd7 9.Be2+=) 8.c4 (8.Bg2!?+= Nbd7 9.0-0–/+) 8...ab5 (8...dc4 9.Na3–/+) 9.cd5 (9.cb5–/+) 9...Nd5 10.Na3? (better is 10.ab5 Ra1 11.Ba1 Bf3 12.ef3–/+) 10...Be5?? (10...ba4 11.Bg2–+) 11.d4?? (better is 11.Ne5 Ra4 12.Nb5 Ra1 13.Qa1+-) 11...Bf6 (11...Bd6 12.Nb5 Bf3 13.ef3 Bb4 14.Ke2–+) 12.Nc2? (12.ab5 Bf3 13.ef3 Re8–/+) 12...Nc6 (12...ba4 13.e4 c5 14.Be2 Qa5 15.Qd2–+) 13.Ra3? (13.ab5 Ra1 14.Ba1 Bf3 15.ef3 Nce7–/+) 13...Qd6 (better is 13...Be7 14.ab5 Ba3 15.Ba3 Bf3 16.ef3 Nce7–+) 14.Rc3?? (better is 14.e4 Ndb4 15.Bb5 Nc2 16.Qc2 Bf3 17.Rf3 Nd4 18.Bd4 Bd4 19.0-0–/+) 14...Qa3 (better is 14...Nc3 15.Bc3 Bf3 16.ef3 ba4 17.Bd3–+) 15.Rc6 (better is 15.Ra3 Be7 16.e4 Ba3 17.Ba3 Nc3+-) 15...bc6 (better is 15...Qb2 16.Rc5 Ra4–+) 16.a5 Qe7 1–0. Steuer,Detlef – Buss,Michael, corr 4AMM–02, 1997.

5.b5 Nbd7 6.e3 Bd6 7.Be2 0-0 8.0-0 c5 9.Nc3+=.

5.e3 a5 6.Nc3=.

5.e3 Bd6 6.c4 dc4 (6...0-0 7.h3 Bf5 8.Nh4=) 7.Bc4 (7.h3 Bh5=) 7...Qe7 (7...Nc6!?=) 8.h3+= Bh5 9.g4 Bg6 10.g5 Ne4? (better 10...Nh5!?+=) 11.h4+- (11.Bg7?! Rg8 12.Bh6 Nd7+=) 11...Bh5 (11...Nc6 12.d3 Bb4 13.ab4 Qb4 14.Nbd2 Qb2 15.de4+- (15.Ne4?! Be4 16.de4 Qb4 17.Nd2 0-0-0+=)) 12.d3 Ng3? (better 12...f5 13.de4 fe4 14.Qa4 c6+-) 13.fg3 Bg3 14.Kd2 Qd6 (14...0-0 15.Rg1 Bf2+-) 15.Bg7 Rg8 16.Nc3 Rg7 (16...Bg6 17.Nb5 Qc6 18.Be5 Be5 19.Ne5 Qg2 20.Kc3+-) 17.Ne4 Qc6 (17...Qf8 18.Nf6 Kd8 19.Nh5+-) 18.Nf6 (18.Ng3?! Bf3 19.b5 Qc4 20.Qf3 Qb5+-) 18...Kf8 19.Nh5 Rg6 (19...Qd6 20.Qg1 Be5 21.d4+-) 20.Ng3 Nd7 (20...b5 21.Bb3 Nd7 22.h5+-) 21.h5 Rg8 (21...Rg7 22.Ne4+-) 22.Ne4 Rd8 23.Nd4 Qb6 24.Rf1 Ne5 25.Be6 Ke7 26.Rf7! Ke8 (26...Nf7 27.Qf3 Decoy) 27.Nf6 1–0. Pierre – Pafavel, internet, 2020.

5.Ne5 Bf5 6.e3 Bd6 7.Be2 Nbd7 8.Nd7 Qd7 9.Nc3+=.

5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.e3 Nd7 9.c4 Ngf6 10.Be2 Bd6 11.0-0 0-0 12.d4 b6 13.Nbd2 Qc7 14.Qb3 (better 14.dc5 bc5 15.h3=) 14...Bh2!-/+ 15.Kh1 (15.Nh2 Be2 Pinning (15...Be2 Deflection)) 15...Bd6 16.Bb2 (16.dc5 bc5 17.Rb1 Qb6-/+) 16...Ne4 17.Qd1 f5 18.Ne4 fe4 19.Ng5 Bf5 (19...Be2 20.Qe2 Rf6 21.Ra1-/+) 20.cd5 Qd8 (20...ed5 21.dc5 Qc5 22.Qb3=) 21.f4 (21.de6?? Qg5 22.g3 Be6 23.dc5 Bc5-+) 21...ef3 (21...ed5 22.dc5 Nf6 23.Bf6 gf6 24.Qd5 Kg7 25.cd6 (25.Qd6?! Qd6 26.cd6 fg5+-; 25.Qf5?! fg5 26.Qe4 bc5+-) 25...fg5 26.fg5 Qg5 27.Qe5 Rf6 28.d7 Qh4 29.Kg1 Bd7 30.Rf4 Qf4 31.ef4+- (31.Qf4?! Rf4 32.ef4 e3=)) 22.Nf3 Nf6 23.de6 Ne4 24.Bc4 Kh8 (24...Qe7!? 25.Kg1 Be6=) 25.Kg1+= Qf6 (better 25...Ng3 26.Re1 Qe7 27.dc5 bc5+/-) 26.dc5+- Qh6? (26...Qb2 27.cd6 Qa3 28.Qd4 Qd6 29.Ng5+-) 27.cd6 (better 27.Bg7 Qg7 28.cd6+-) 27...Qe3 28.Kh1 Qh6?? (better 28...Ng3 29.Kh2 Nf1 30.Qf1 Be6 31.Be6 Qe6+-) 29.Nh2 Ng3 30.Kg1 Qe3 (30...Nf1 A) 31.Kf1? Bg4 (worse 31...Qh2 32.Bg7 Kg7 33.Qd4 Kg6 34.e7 Bd3 35.Ke1 Rf1 36.Kd2 Qg2 37.Kd3 Rf3 38.Qe3 Re3 39.Ke3 Qg3 40.Ke2 Qe5 41.Kf2-+) 32.Nf3 Qh1 33.Ke2 Qg2 34.Ke1 Qg3 (34...Qb2 35.e7 Rb8 36.Qd4 Qb1 37.Kf2+/-; worse 34...Rf3 35.Bg7 Kg7 36.Qd4 Rf6 37.Qe3 Qh1 38.Kd2 Qd1 39.Kc3-+; 34...Bf3?! 35.Qd4 Qg3 36.Kd2 Qg5 37.Kc3=+) 35.Kd2 Rf3-+ (35...Bf3?! 36.Qc2-+); B) worse 31.Nf1 Be6 32.d7 Bc4+-; C) 31.Qf1 Qd2 32.e7 Qd6 33.ef8R Qf8 34.Qf4 Qc5 35.Bd4 Qc4 36.Bg7 Kg7 37.Qc4+-) 31.Rf2 Be6 (31...Ne4 32.Qd4 Qf2 33.Qf2 Nf2+-) 32.Qd4 (32.Qd4 Qf2 33.Qf2 Rf2 34.Kf2 Ne4 35.Ke3 Nd6 36.Be6 Nb5 37.Ke4+-) 1-0. BeepBeepImAJeep (2845) - luka1950 (2565), lichess.org, 2016.

5.a4 Bf3 6.ef3 ab5 7.ab5 Ra1 8.Ba1 Nf6 9.Be2 Bd6 10.0-0 0-0 11.c4 Nbd7 12.d4 (12.Re1 dc4 13.Bc4 Nb6=+) 12...dc4-/+ 13.Bc4 Qa8 (13...Nb6 14.Bd3-/+) 14.Nd2 Nb6 15.Bd3 Rd8 (15...Nbd5 16.Ne4=+) 16.Qc2 (16.Ne4 Nbd5=) 16...Nbd5 (16...Qa4 17.Ne4 Qc2 18.Bc2=+) 17.Ne4 Be7 (17...Qa5 18.Rd1=) 18.Bc4 (18.Nf6 Nf6 19.Qc7 Bd6+=) 18...Nb6 (18...Nb4!? 19.Qb3 Nfd5=+) 19.Nf6+= Bf6 Attacking the isolated pawn on d4 20.Bd3 g6 21.Qc7 Nd5 22.Qc4 Qa3 (22...Nf4 23.Rb1=) 23.Be4+= Ra8 24.g3 Qa2 25.Bd5 ed5 26.Qc7 h5 (better 26...Qb3!? 27.Qb7 Ra4+=) 27.Qb7+/- h4 (27...Ra4 28.f4+/-) 28.Qc6 (28.Bc3 h3+-) 28...Bd8 (28...Kg7 29.b6+/-) 29.b6 (29.Bc3 h3+-) 29...Qa6 30.Rb1 h3 31.Qd5?? (better 31.Re1+/-) 31...Qd3?? (better 31...Qa1 32.Qb5 Qd4-/+) 32.Qe4 (32.Re1!? Qd2 33.Qe4 Ra2 34.Qe8 Kg7+-) 32...Qe4 33.fe4 Bb6 34.Kf1 Bc7 (34...Ra4 35.Rb6 Ra1 36.Ke2 Ra2 37.Kf3+-) 35.d5 Ra4 (35...Kf8 36.e5+-) 36.Re1 (36.Bf6!? Ra8+-) 36...Ba5 37.Rd1 (37.Rc1!? Kf8 38.e5 Ke8+-) 37...Re4 38.d6 Bd8 39.Bd4 Kf8 40.Bc5 (40.f4 Ba5+-) 40...Kg7 (40...Rc4 41.Ba3+-) 41.Rd3 Kf6 42.d7 (42.Bd4 Kf5+-) 42...Ke6 (better 42...Rc4!? 43.Bf8 Rc2+/-) 43.Rd6+- Kf5 44.f3 (44.Rc6 Rc4+-) 44...Re6 45.Rd3 (45.g4 Kf6 46.Rd2 Rc6+-) 45...Kf6 (45...Rc6 46.Bb4+/-) 46.Kf2 (46.g4!? Rc6 47.Bf8 Ke6+-) 46...Rc6+/- 47.Be3 (47.Ba3 Rc2 48.Kg1 Rg2 49.Kh1 Ra2=) 47...Ke6 48.Bf4 (48.f4 Rd6 49.Rd6 Kd6+/-) 48...Rc2+= 49.Bd2 Bb6 (better 49...Rc7!?=) 50.Ke2+/- Bd8 51.f4 (51.g4 Rc5+/-) 51...Rc6 (51...f5 52.Kf3+/-) 52.g4 (52.Bb4 Rc2 53.Ke3 f5 54.Rd6 Kf7+=) 52...f5 53.g5 Rc4 (53...Rd6 54.Rh3 Bb6 55.d8Q Rd8 56.Rh6+/-) 54.Rh3 (54.Bc3 Ra4+-) 54...Kd7 55.Rh7 Ke8 56.Rg7 (56.h4 Re4 57.Kd3 Bb6+-) 56...Rc6+/- 57.Be3 Re6 58.Kf3 Kf8 59.Rd7 (59.Rb7 Ba5+-) 59...Be7 (59...Bb6 60.Bb6 Rb6 61.Ra7+/-) 60.h4 Ke8 (better 60...Kg8+/-) 61.Ra7?? (61.Rd5 Rd6 62.Re5 Rc6+-) 61...Kf8?? (better 61...Re3 62.Ke3 Bc5 63.Kf3 Ba7-+) 62.Bd4 (62.Ra5 Bd8 63.Rb5 Ke7+-) 62...Ke8 63.Be5 Kf8 64.Kg3 Kg8? (better 64...Bb4!?+-) 65.h5! gh5 66.Kh4 Bf8 67.Kh5 Rc6 (67...Re7 68.Re7 Be7+-) 68.g6 Rc1 69.Kg5 Rg1 70.Kf5 Bc5 (70...Rh1 71.Ke6+-) 71.Rh7 (71.Ra8 Bf8 72.Bd6 Rd1 73.Bf8 Rd5 74.Kf6 Ra5 75.Rd8 Rf5 76.Kf5 Kh8 77.Bh6) 71...Kf8+- 72.Bf6 Ke8 73.Rh8 Kd7 74.g7 (74.g7 Rg7 75.Bg7+-) 1-0. Timmermans,Mark (2385) - Holt,C (2545), Titled Tuesday 1st June, 2021.

5.e3 Nbd7 6.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 e6 6.b5).

5.Ne5 Bf5 6.Nc3 –/+.

5.Ne5 Bh5 6.h3 (6.Nd3 Bd6–/+) 6…Nbd7–/+ 0–1. zd3nik (1900) – marekt (2015), gameknot.com, 2014.

5.h3 Bf3 6.ef3 a6 +=.

(--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 e6).

5.b5 Nbd7 6.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 Bg4 4.e3 Nbd7 5.Be2 e6 6.b5).

5.ef3 Nf6 (5...Bb4?? 6.Bg7 Nf6 7.Bh8+-) 6.b5 (6.a3 Nbd7=+) 6...a6 7.a4 Bd6 8.Qe2 (8.Be2 0-0=+) 8...c5 9.Na3 (9.Nc3 0-0–/+) 9...c4 (9...0-0 10.ba6 Na6 11.Nb5–/+) 10.d3 (10.Qe3 Nbd7–/+) 10...Ba3 11.Ba3 ab5 12.ab5 Qa5 13.Qd2 c3 (13...Qb5 14.Qc3 Ra4 15.Be2–/+) 14.Qg5=+ Qb5 15.d4 Qb6 16.Be2 Nbd7 17.0-0 (< 17.Qg7 Rg8 18.Qh6 Rg2–/+) 17...Ra4 (17...Qd4?? 18.Bc5 Ra1 19.Bd4 Rf1 20.Kf1+-) 18.Bc5 Qa5 (18...Nc5? 19.dc5 Qc5 20.Ra4+-) 19.Rab1 Nc5 20.Qg7 Rg8 21.Qf6 Nd7 22.Qh6 (22.Qh4 Rb4+/–) 22...Rd4+= 23.Qh7 Nf6 24.Qh6 Nd7 25.Rb7 (25.Bb5 Qc7+=) 25...Rb4 26.Rb1 Rb1 27.Rb1 Qa2 28.Qc1 Ke7 29.Rb3 (29.Rb7 Qa8 30.Qb1 Rd8+/–) 29...d4 30.Bb5 (30.Rb7 Qa8 31.Qb1 Rg5+/–) 30...Ne5+= 31.Kh2 (31.Qd1 Qa7+=) 31...Qa7 32.Qh6 Rb8 33.Qh4 (33.f4 Nd7+=) 33...f6 34.f4 Nf7 35.Qh7 Qc7 36.g3 f5 37.Qh4 (37.Qg6 d3 38.Bc4 Rb6=+) 37...Kf8= 38.Qf6 (38.Qh5 d3 39.Bd3 Rb3 40.cb3 c2 41.Bc2 Qc2+=) 38...Qc5 39.Bc4 Rb3 40.Bb3 (40.cb3? c2 41.Qe6 Nd6–+) 40...d3 41.Be6 Qf2 ½–½. Walker,John T (2075) – Koolsbergen,Nico (1960), IECC, 2004.

5.gf3 Qh4 (5...Nf6 6.Rg1+=) 6.Be5 (6.a3 Nf6+=) 6...Nd7 (6...Nc6 7.Bc7 Bb4+=) 7.Bg3 (7.Bc7!? Rc8 8.Bg3 Qb4 9.Nc3+=) 7...Qb4–/+ 8.Nc3 d4 (8...Qa5 9.e3–/+) 9.Ne4 Qa5 (9...f5 10.Ng5 e5 11.f4–/+) 10.Rb1 (10.e3 e5–/+) 10...Be7 11.h4 (11.Bh2 f5 12.Ng3 Nb6–/+) 11...h6–+ 12.c3 (12.Bh2 0-0-0–+) 12...f5 (12...Qa2?! 13.cd4 Qd5 14.Qa4=) 13.cd4 fe4 14.fe4 Ngf6 (14...c5 15.Qb3 Ngf6 16.e5–+) 15.Qc2–/+ 0-0 (15...Bb4 16.Rb2–/+) 16.Rb7 Increases the pressure on c7 16...Rab8 (16...Bd6 17.Rg1 Bg3 18.Rg3–/+) 17.Rb8 (17.Rc7 Rb4 18.e3 Rfb8–/+) 17...Rb8 18.Bh3 (18.e3 Qb6–/+) 18...Nf8 19.0-0 (19.Bc7?? Qc7 20.Kd1 Qb6–+) 19...Qa3 20.Qc7 Rb2 21.Qc8 (21.Qe5 Kf7–+) 21...Kf7 22.e5 (22.d5 ed5 23.ed5 Nd5–+ (23...Qa2?! 24.d6=)) 22...Nd5 (22...Ne4 23.d3 Nc3 24.e3–+) 23.Rc1 (23.e4 Nb6 24.Qc3 Qa2–+) 23...Rb8! (23...Rd2?! 24.Rc6 Nb6 25.Be6 Ne6 26.Qe6 Kf8 27.Qf5 Kg8 28.Qe6 Kh8 29.Rc7=) 24.Qc2 (24.Qb8 Qc1 Double attack (24...Qc1 Discovered attack; 24...Qc1 Deflection; 24...Qb4 Decoy)) 24...Bh4! 25.Kh2 (25.Bh4 Qh3 Pinning (25...Qh3 Deflection)) 25...Bg5–+ 26.e3 g6 (26...Be7 27.Bg2 Rb2 28.Qd1–+) 27.Qd1 Ke8 28.f4 Be7 29.e4 Nb4 30.f5 Na2 31.Rb1 Rb1 32.Qb1 Qa5 33.fg6 Qd2 34.Kh1+= Ng6 35.Qb5 Kf8 36.Qf1 Kg7–/+ 37.Be6 Qc1 38.Kg2 Qf1 39.Kf1 Nc3 0–1. Walker,John T (1940) – Vegjeleki,Adolf (2145), corr WSTT/3/06/Semifinal, 2008.

4.gf3 f6 5.b5 A) 5...e5 A1) 6.Nc3 Ne7 (6...Qd6 7.f4 Nd7 8.Bg2 Ne7 9.e3 0-0-0 10.Qg4 f5 11.fe5 Ne5; 6...Bb4 7.Rg1 g6 8.Rg4 Bc3 9.Bc3 Nd7 10.Bh3 Ne7 11.d4 a6) 7.e3 Qd6 8.Bg2 Nd7 9.0-0 Kf7 10.f4 g6 11.fe5 Ne5; A2) 6.e3 Ne7 (6...a6 7.d4 Kf7 8.ba6 Na6 9.de5 fe5 10.Be5 Nb4 11.Rg1 Nc6) 7.Bh3 a6 8.f4 ef4 9.ef4 ab5 10.0-0 Ra4 11.Nc3 Rf4; A3) 6.c4 d4 (6...Ne7 7.cd5 Nd5 8.Qb3 Nb6 9.Nc3 N8d7 10.Qc2 Nc5 11.Rg1 Qd7; 6...a6 7.cd5 ab5 8.Nc3 b4 9.Ne4 Qd5 10.Qb3 Qb3 11.ab3 Ra1; 6...dc4 7.e3 a6 8.Bc4 ab5 9.Bb5 Nc6 10.Qb3 Qd7 11.Nc3 Nge7) 7.e3 Nd7 8.ed4 ed4 9.Bd4 Bc5 10.Bc5 Nc5 11.d4 Ne6; A4) 6.Rg1 Ne7 (6...a6 7.c4 d4 8.e3 ab5 9.cb5 Nd7 10.ed4 Ne7 11.Qe2 ed4; 6...Nd7 7.Nc3 Ne7 8.Bh3 Nb6 9.d3 Ng6 10.Bf5 Nh4 11.Bh3 d4; 6...Qd6 7.c4 Ne7 8.Ba3 Qd7 9.Be7 Be7 10.cd5 0-0 11.Nc3 f5) 7.Bh3 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Nd7 11.Nc3 Nc5; A5) 6.Bh3 a6 (6...Ne7 7.d4 Ng6 8.de5 fe5 9.e3 Bb4 10.c3 Bc5 11.Qd3 c6; 6...Qd6 7.c4 Nd7 8.cd5 Ne7 9.Nc3 Nd5 10.Ne4 Qb4 11.Rb1 Qc4; 6...Nd7 7.Nc3 Ne7 8.d4 Nb6 9.de5 fe5 10.Qd3 Ng6 11.Qf5 Qf6) 7.c4 d4 8.0-0 Nd7 9.a4 ab5 10.cb5 Nc5 11.Qc2 d3; A6) 6.d4 Nd7 (6...Qd6 7.e4 Ne7 8.c4 de4 9.fe4 ed4 10.Qd4 Ng6 11.Qe3 Nd7; 6...Bd6 7.Bh3 Ne7 8.Nc3 Kf7 9.Rg1 ed4 10.Qd4 Bh2 11.Rg2 Be5) 7.Qd3 Ne7 8.Nc3 c5 9.bc6 bc6 10.Bh3 Ng6 11.Bc1 Rb8; A7) 6.Bg2 Ne7 (6...a6 7.c4 dc4 8.ba6 Ra6 9.Qc2 Nc6 10.f4 ef4 11.Qc4 Rb6; 6...Nd7 7.d4 Ne7 8.Nc3 c5 9.bc6 bc6 10.Rb1 Kf7 11.Bh3 Rb8; 6...Bc5 7.d4 Bd4 8.Bd4 ed4 9.Qd4 Ne7 10.c4 c5 11.Qc5 Nd7; 6...Qd6 7.f4 ef4 8.c4 Ne7 9.Nc3 Nd7 10.cd5 0-0-0 11.Qa4 Kb8; 6...c6 7.Nc3 Ne7 8.e3 Kf7 9.f4 ef4 10.0-0 fe3 11.fe3 Nd7; 6...Kf7 7.c4 Nd7 8.cd5 Nb6 9.Qb3 Qd5 10.f4 Qe6 11.fe5 Re8) 7.Nc3 a6 8.a4 Kf7 9.e3 c6 10.Bh3 Ng6 11.Rg1 Bc5; A8) 6.e4 Ne7 (6...d4 7.f4 Nd7 8.Na3 ef4 9.Nc4 Nc5 10.Qf3 a6 11.a4 Qe7; 6...Nh6 7.f4 de4 8.fe5 fe5 9.Qh5 Nf7 10.Bc4 Qf6 11.Nc3 Qg6) 7.d4 Qd6 8.Ba3 Qe6 9.Nc3 Nd7 10.Be7 Be7 11.Nd5 0-0-0; B) 5...e6 B1) 6.f4 f5 (6...Nd7 7.e3 f5 8.c4 Ngf6 9.cd5 Nd5 10.Nc3 Nc5 11.Rc1 Nc3; 6...a6 7.Nc3 ab5 8.Nb5 Nc6 9.e3 Nge7 10.Qh5 g6 11.Qh4 Bg7) 7.c4 Nf6 8.Bg2 Nbd7 9.Nc3 Nc5 10.cd5 ed5 11.Qc2 d4; B2) 6.Nc3 Nd7 (6...d4 7.Na4 a6 8.c4 Nh6 9.Bh3 ab5 10.cb5 Qd5 11.Qb3 Kf7; 6...a6 7.f4 Ne7 8.a4 Nd7 9.Bh3 f5 10.e3 Ng6 11.Bf1 Bd6; 6...Ne7 7.Rg1 Qd6 8.e3 Qh2 9.Rg2 Qh5 10.Ne2 Qf3 11.Rg3 Qh5; 6...Qd6 7.f4 Qf4 8.Bh3 d4 9.e3 Qh4 10.Be6 dc3 11.dc3 Qe4; 6...Kf7 7.f4 f5 8.e3 Nd7 9.h4 Ngf6 10.h5 Nc5 11.h6 gh6; 6...Nh6 7.e4 d4 8.Ne2 Bc5 9.c3 dc3 10.Bc3 0-0 11.Bh3 Re8) 7.e4 Ne7 8.Rb1 Nb6 9.Bd3 Kf7 10.0-0 Ng6 11.ed5 Nd5; B3) 6.Rg1 Qd6 (6...Ne7 7.e3 Nd7 8.Nc3 Nf5 9.f4 Nc5 10.d4 Ne4 11.Ne4 de4) 7.c4 Ne7 8.Nc3 Nd7 9.cd5 Nd5 10.Nd5 Qd5 11.Qc2 Qb5; B4) 6.e4 Nd7 (6...Kf7 7.Nc3 Ne7 8.f4 Qd6 9.Qf3 Nd7 10.Rg1 g6 11.Bh3 Bh6; 6...Ne7 7.Bh3 Qd6 8.Ba3 c5 9.bc6 Qc6 10.Nc3 Nd7 11.Qe2 de4; 6...Qd6 7.ed5 ed5 8.Bg2 Nd7 9.0-0 f5 10.Nc3 Ngf6 11.Re1 Kf7; 6...Bd6 7.Bh3 Kf7 8.ed5 ed5 9.Qe2 Qe7 10.Bc8 Nd7 11.Qe7 Ke7; 6...Bc5 7.Rg1 Kf7 8.Bh3 Ne7 9.f4 g6 10.Nc3 Qd6 11.Qf3 Nd7) 7.ed5 ed5 8.Nc3 Ne7 9.f4 Nc5 10.Bg2 Qd7 11.0-0 0-0-0; B5) 6.e3 Nd7 7.Nc3 f5 8.Rg1 Ngf6 9.Ne2 Nc5 10.a4 Qd6 11.f4 Qd7; B6) 6.c4 d4 (6...Qd6 7.Nc3 Nd7 8.cd5 ed5 9.Bh3 Ne7 10.Qc2 Ne5 11.d4 Nc4) 7.Qc2 f5 8.Qd3 Bc5 9.e3 Nd7 10.ed4 Qf6 11.Bc3 Be7; C) 5...Qd6 C1) 6.c4 e6 (6...d4 7.e3 e5 8.f4 Nd7 9.Bg2 0-0-0 10.0-0 Nh6 11.Qf3 Nc5) 7.cd5 ed5 8.Bh3 Nd7 9.d4 Qb4 10.Qd2 Nb6 11.Bc3 Qb5; C2) 6.e4 Nh6 (6...Nd7 7.ed5 Qd5 8.Nc3 Qe5 9.Qe2 e6 10.0-0-0 Qe2 11.Ne2 Kf7; 6...e6 7.ed5 ed5 8.Bh3 Kf7 9.Nc3 Nd7 10.0-0 Ne7 11.Re1 f5) 7.ed5 Qd5 8.Nc3 Qd4 9.Qe2 Nd7 10.0-0-0 0-0-0 11.Ne4 Qb6; C3) 6.e3 Nd7 (6...e6 7.c4 Ne7 8.cd5 Nd5 9.Na3 Nd7 10.Nc4 Qe7 11.Be2 a6; 6...e5 7.c4 d4 8.ed4 ed4 9.Bh3 Nd7 10.0-0 Kf7 11.Re1 Nc5) 7.f4 e6 8.c4 Ne7 9.Ba3 c5 10.Nc3 0-0-0 11.Rc1 Kb8; C4) 6.Bh3 Nd7 (6...e6 7.c4 Ne7 8.Nc3 Nd7 9.Qc2 dc4 10.Qe4 Nc5 11.Qc4 Rd8; 6...Qb4 7.Bc1 Qb5 8.Nc3 Qc6 9.e4 de4 10.fe4 Nd7 11.Qh5 g6) 7.e3 Qb4 8.Ba3 Qb5 9.f4 Qc6 10.Rg1 Nh6 11.Nc3 e6; C5) 6.a4 Nd7 (6...e5 7.Nc3 Nd7 8.Bh3 Ne7 9.a5 Kf7 10.Rg1 f5 11.a6 b6; 6...Nh6 7.Nc3 Nd7 8.Ba3 Qe5 9.Bh3 d4 10.f4 Qh5 11.Bd7 Kd7; 6...Kf7 7.Nc3 e5 8.e4 Ne7 9.Ba3 Qd7 10.Rg1 c6 11.bc6 bc6) 7.Nc3 e5 8.a5 Ne7 9.a6 b6 10.Rg1 Nc5 11.Bh3 Ng6; C6) 6.Bg2 Nd7 (6...e6 7.Nc3 Ne7 8.e4 Nd7 9.0-0 Ne5 10.ed5 ed5 11.f4 N5g6; 6...Nh6 7.c4 dc4 8.Na3 Qb4 9.Qc2 a6 10.b6 cb6 11.Nc4 Nc6) 7.Nc3 f5 8.e3 Ngf6 9.f4 Kf7 10.Qf3 e6 11.Qg3 a6; C7) 6.Ba3 Qb6 (6...Qd7 7.e3 a6 8.ba6 Na6 9.Nc3 e5 10.Qb1 c6 11.Bf8 Kf8; 6...Qd8 7.c4 e5 8.Bb2 d4 9.e3 Ne7 10.ed4 ed4 11.Bg2 Qd6) 7.Nc3 e6 8.Bb2 Nd7 9.e3 Ne7 10.a4 a5 11.f4 0-0-0; D) 5...Nd7 D1) 6.Nc3 e6 (6...Nb6 7.e3 Nh6 8.a4 Nf5 9.a5 Nc4 10.Bc4 dc4 11.a6 Rb8) 7.Rg1 f5 8.e4 Ngf6 9.ed5 ed5 10.Bd3 Qe7 11.Qe2 Qe2; D2) 6.e3 e6 (6...f5 7.c4 Ngf6 8.Nc3 dc4 9.Qc2 Ne5 10.Qf5 Nd3 11.Bd3 Qd3; 6...Nh6 7.Nc3 e6 8.Bh3 f5 9.Rg1 Ne5 10.Bf1 d4 11.Na4 Qd5) 7.Nc3 f5 8.Ne2 Ngf6 9.Rg1 Nc5 10.a4 Qd6 11.f4 Qd7; D3) 6.Bh3 Nb6 (6...Ne5 7.Na3 Qd6 8.Rb1 e6 9.f4 Ng6 10.e3 f5 11.c4 Nf6) 7.Nc3 Qd6 8.Rb1 Nh6 9.e3 e6 10.Ne2 Nc4 11.Bc3 Nf5; D4) 6.Bg2 Nb6 (6...e6 7.Nc3 Ne5 8.f4 Nc4 9.Rb1 Nh6 10.Bc1 Kf7 11.0-0 Qd7; 6...Nh6 7.Nc3 Nb6 8.Rb1 a6 9.ba6 Ra6 10.f4 c6 11.0-0 Qc7) 7.Nc3 Nh6 8.d3 e6 9.a4 d4 10.Ne4 f5 11.Nd2 Nd5; D5) 6.e4 Nc5 (6...Nb6 7.a4 Qd7 8.a5 Nc4 9.Bc4 dc4 10.Nc3 c6 11.bc6 Qc6) 7.a4 de4 8.Nc3 Qd4 9.Ne4 Qb2 10.Nc5 Qe5 11.Ne4 Rd8; D6) 6.f4 e6 (6...Nc5 7.Bg2 Na4 8.Bd4 e6 9.Nc3 Nc3 10.Bc3 Qd7 11.e4 Ne7; 6...Nb6 7.e3 Nh6 8.Nc3 Nf5 9.Rg1 Qd7 10.Qh5 g6 11.Rg6 hg6; 6...Nh6 7.Nc3 Nb6 8.e3 Qd7 9.Bd3 Nf5 10.0-0 0-0-0 11.a4 Kb8) 7.Nc3 f5 8.e3 Ngf6 9.Rg1 Nc5 10.Qf3 Qd7 11.Be2 Bd6.

4.gf3 f6 5.Nc3 A) 5...e5 A1) 6.a3 a5 (6...Nc6 7.b5 Na5 8.d3 Ne7 9.Qd2 Qd7 10.h4 d4 11.Ne4 Qb5; 6...Ne7 7.e3 Nbc6 8.Bd3 Qd7 9.Qe2 a6 10.0-0-0 0-0-0 11.Kb1 Kb8; 6...Kf7 7.Rg1 a5 8.e4 Ne7 9.ed5 Nd5 10.Bc4 c6 11.f4 ab4) 7.b5 Ne7 8.e4 d4 9.Na4 Ng6 10.Bc4 Nf4 11.c3 dc3; A2) 6.b5 Ne7 (6...Bb4 7.Rg1 Kf7 8.f4 e4 9.Bh3 Bc3 10.Bc3 d4 11.Bb2 Qd5; 6...Qd6 7.e4 Ne7 8.ed5 Nd5 9.Bc4 Nf4 10.d3 Nd7 11.Qd2 Nb6; 6...a6 7.e3 ab5 8.Bb5 Nc6 9.f4 d4 10.ed4 Qd4 11.fe5 Qe5; 6...Bc5 7.Rg1 Kf7 8.Na4 Qd6 9.Nc5 Qc5 10.e3 Nd7 11.f4 g6) 7.d4 Qd6 8.Qd2 Nd7 9.0-0-0 0-0-0 10.e4 ed4 11.Qd4 Nb6; A3) 6.Rg1 Qd7 (6...g6 7.b5 Ne7 8.d4 Qd6 9.de5 fe5 10.Qd2 Nd7 11.0-0-0 Nf6; 6...Kf7 7.e4 Ne7 8.ed5 Nd5 9.Bc4 c6 10.f4 Bb4 11.fe5 Bc3; 6...Ne7 7.e3 a6 8.Bd3 Nbc6 9.a3 Qd7 10.b5 ab5 11.Nb5 g6; 6...d4 7.Ne4 f5 8.Ng5 Qd7 9.e3 h6 10.Nh3 de3 11.fe3 Nf6; 6...Nh6 7.b5 Qd6 8.Bg2 Nd7 9.f4 e4 10.e3 0-0-0 11.f3 f5) 7.b5 d4 8.Ne4 f5 9.Ng3 Qb5 10.Rb1 Qd7 11.c3 Nc6; B) 5...Kf7 6.e3 (6.Rg1 e6 7.a3 f5 8.e3 Nf6 9.Ne2 Bd6 10.Nd4 Qd7 11.f4 Nc6) 6...e6 (6...f5 7.Bd3 e6 8.Rg1 Nf6 9.Ne2 Nbd7 10.a3 a5 11.Nf4 g6) 7.b5 Nd7 8.Rg1 f5 9.Ne2 Ngf6 10.Nd4 Nc5 11.f4 Bd6; C) 5...e6 C1) 6.Bh3 f5 (6...Kf7 7.b5 f5 8.e3 Nd7 9.f4 Ngf6 10.Qf3 Nb6 11.Bf1 Bb4) 7.e4 Qh4 8.Bg2 Nf6 9.Qe2 Kf7 10.Qb5 Nbd7 11.Qb7 Bd6; C2) 6.a3 Nc6 (6...Ne7 7.f4 Nbc6 8.Rg1 Qd7 9.b5 Na5 10.e3 0-0-0 11.Bd3 Nf5; 6...d4 7.Ne4 f5 8.Ng3 Nf6 9.e4 f4 10.Ne2 e5 11.c3 dc3) 7.e3 Nh6 8.f4 Nf5 9.Bd3 Qd7 10.Qh5 g6 11.Qg4 0-0-0; C3) 6.b5 Nd7 (6...d4 7.Ne4 f5 8.Ng3 Nf6 9.e3 de3 10.de3 Nbd7 11.Bc4 Nc5; 6...Qd6 7.e4 Nd7 8.ed5 ed5 9.Bg2 Nb6 10.0-0 Nc4 11.Bc1 0-0-0; 6...Ne7 7.e4 Nd7 8.Rg1 c6 9.f4 Nc5 10.Qf3 Qd7 11.0-0-0 0-0-0; 6...a6 7.Rg1 Nh6 8.a4 Qd6 9.e4 Qh2 10.Rg3 c6 11.bc6 bc6) 7.e4 d4 8.Ne2 e5 9.Ng3 Ne7 10.Bc4 Nc8 11.f4 Nd6; C4) 6.Nb5 Qd7 (6...Nc6 7.Rg1 Nge7 8.Bh3 a6 9.Nd4 Nd4 10.Bd4 Qd6 11.Rg2 Nc6) 7.e3 Nc6 8.a3 Nge7 9.Bd3 a6 10.Nd4 Nd4 11.Bd4 Nf5; C5) 6.Rg1 a6+- (6...Nh6 7.Bh3 Qd6 8.Rg3 a6 9.e4 d4 10.Na4 Nd7 11.Nc5 Nc5; 6...Qd7 7.b5 Nh6 8.e3 a6 9.f4 ab5 10.Nb5 Nc6 11.c4 0-0-0; 6...Nc6 7.b5 Na5 8.e3 Ne7 9.f4 Qd6 10.a4 0-0-0 11.Ba3 Qd7; 6...Ne7 7.e3 Nbc6 8.b5 Na5 9.Bd3 Qd6 10.f4 0-0-0 11.a4 Nf5) 7.Bh3 Qd6 8.f4 Nc6 9.b5 ab5 10.Nb5 Qf4 11.Be6 Qh2.

4.gf3 f6 5.Bh3 e5 (5...Kf7 A) 6.Rg1 e5 (6...e6 7.c4 Ne7 8.Na3 Nbc6 9.b5 Nb4 10.Qb1 Ng6 11.Bc3 Qd6; 6...Qd6 7.f4 e5 8.a3 ef4 9.c4 Ne7 10.Nc3 Nbc6 11.Nb5 Qd8; 6...Na6 7.c4 d4 8.Qb3 e6 9.Na3 c5 10.Nc2 f5 11.f4 Nb4) 7.c3 g6 8.Qa4 f5 9.Qb5 b6 10.c4 c6 11.Qa4 d4; B) 6.c4 d4 (6...Nc6 7.cd5 Qd5 8.Nc3 Qc4 9.Rb1 e6 10.Ne4 Bb4 11.a3 Ba5) 7.Qb3 e6 8.c5 Qd7 9.f4 g6 10.Rg1 Ne7 11.e4 de3) 6.Nc3 (6.c4!?+- dc4 (6...d4 7.Qb3 a5 8.ba5 Nc6 9.0-0 Na5 10.Qd3 Ne7 11.Qc2 Ng6; 6...Ne7 7.Nc3 dc4 8.Be6 Nbc6 9.b5 Nd4 10.Bc4 Qd6 11.Rb1 0-0-0; 6...Nc6 7.cd5 Qd5 8.Nc3 Qc4 9.a3 Nh6 10.d3 Qh4 11.b5 Nd4) 7.Qc2 Nc6 8.Qc4 Bb4 9.a3 Ba5 10.Nc3 Nge7 11.Rg1 Kf8; 6.c3 a5 7.Qa4 c6 8.b5 Ne7 9.Na3 Nd7 10.d4 Qc7 11.bc6 Qc6; 6.Rg1 Nc6 (6...Ne7 7.Nc3 Ng6 8.b5 Nf4 9.Bf1 Ne6 10.e3 Bb4 11.Bh3 Ng5) 7.Nc3 Nge7 8.b5 Nd4 9.e3 Ndf5 10.Qe2 g6 11.Qd3 Qd6; 6.a3 Ne7 (6...Kf7 7.Rg1 Nc6 8.c4 dc4 9.Nc3 Nd4 10.Qa4 g5 11.Ne4 Ne7; 6...Nc6 7.Nc3 Kf7 8.b5 Na5 9.d3 Bc5 10.Rg1 Ne7 11.Qd2 c6; 6...a5 7.Nc3 Ne7 8.e3 Kf7 9.Rg1 f5 10.Ne2 Qd6 11.f4 Nd7) 7.Nc3 Kf7 8.e3 Nbc6 9.Qe2 g6 10.Na4 Nf5 11.Qb5 Rb8) 6...Bb4= 7.Be6 (7.Rg1 Kf7= 8.e3 Nc6 9.f4 Bc3 10.Bc3 d4 11.Qg4 g6) 7...Ne7 8.Nb5? (better 8.e4 d4 (8...Bc3 9.dc3 c6 10.f4 Qd6 11.Qg4 Nd7) 9.Nd5=+ Na6 10.f4 Nd5 11.ed5 Nc5) 8...a6–+ 9.a3 Bc5 10.d4 (10.Nc3 Qd6 11.Bh3 Nbc6–+) 10...Bd6 (better 10...ab5 11.dc5 Na6–+) 11.Nc3–/+ ed4 (better 11...Nbc6–/+) 12.Qd4+= Be5 13.Qh4?? (13.Qg4 f5 14.Bf5 h5=) 13...Bc3?? (better 13...Qd6 14.Bh3 Nbc6–+) 14.Bc3= Qd6 15.Qh5 g6 16.Qg4 (16.Qh3 d4 17.0-0-0+=) 16...f5 (better 16...Rf8!? 17.e4 d4=) 17.Qb4+= Qc6? (17...Qb4 18.ab4 (worse 18.Bb4 Nbc6=+) 18...Rf8 19.Bg7+=) 18.Bf5 (better 18.Bh8!? Qe6 19.Qb7+-) 18...Nf5 (18...Rf8 19.Bg4 Rf4=) 19.Bh8+- 1–0. pereira – Anonymous, internet, 2011.

5.c4 e6 6.a4 Nf6 7.b5 Nbd7 8.Be2 Bd6 9.cd5 cd5 10.0-0 0-0 11.d4 Rc8 12.Nd2 Qc7 13.Rc1 Qb8 14.Qb3?? (better 14.h3-/+) 14...Bh2-+ 15.Kh1 Bf4 (better 15...Qf4 16.g3 Qd2-+) 16.Rcd1 Bd2 (16...Rc7 17.Rfe1-+) 17.Rd2 Qf4 18.Qe3 Nh5 (18...Qh4 19.Kg1-+) 19.Qf4 Nf4 20.Bd1 Nf6 (20...Nb6!? 21.g3 Nc4 22.Rc2-+) 21.g3 Ng6 22.Kg2 Ne8?? (better 22...Rc7-/+) 23.Ba3+= Nf6 24.Bf8 Kf8 25.Rc2 (25.Bc2+=) 25...Rd8 (better 25...Rc4!?=) 26.Be2 Ne8 27.Rh1 h6 28.Bd3 Ne7 29.Rhc1 Rd7 30.f4 g6 31.Kf3 Kg7 32.Ke3 h5 33.f3 Rd6 (33...Nd6 34.g4+/-) 34.g4 hg4 (34...Rd7 35.a5+/-) 35.fg4+- Nf6? (35...Rd8 36.Kd2+-) 36.Rg1 (36.Rc7!? Ng4 37.Kf3 Nh2 38.Kg3 Nf5 39.Bf5 gf5 40.Kh2 Rb6+-) 36...Rd8 (better 36...Ne8+-) 37.Rc7 Neg8 (37...Rd7 38.Rgc1 Kf8 39.g5 Rc7 40.Rc7+-) 38.Rb7 a6 (38...Ra8 39.a5+-) 39.ba6 1-0. BeepBeepImAJeep (2650) - ZePequeno (2310), lichess.org, 2017.

5.c4 Nf6=.

5.Be2 Qb6 6.a3 a5 (6...e6 7.Nc3=) 7.c4 (7.b5 Nf6=) 7...e6 (7...dc4 8.Qa4=) 8.c5 (8.cd5 ed5 9.b5 d4=) 8...Qd8 (8...Bc5 9.Bg7 Bf2 10.Kf1=) 9.0-0 Nd7 (9...Nf6 10.Re1=) 10.Qc1 (10.Nc3 Ngf6=) 10...Qg5 11.d3 (11.Nc3 Be7=) 11...Qc1 12.Rc1 (12.Bc1? ab4 13.d4 e5–+) 12...Ngf6 13.Nd2 a4 (13...Nh5 14.d4=) 14.Nf1 (14.Re1 g6+=) 14...Be7 15.Ne3 (15.f4 Bd8=) 15...0-0 (15...Nh5 16.g3=) 16.Rab1 (16.f4 Bd8=) 16...Rfc8 (16...Nh5 17.g3=) 17.d4 Rcb8 (17...Nh5 18.g3=) 18.Ba1 (18.b5 Nh5+=) 18...Kf8 (18...Nh5 19.b5=) 19.b5+= Ke8 (19...Nh5 20.g3+=) 20.b6 (20.Bb2 Kf8+=) 20...Kf8 21.Bd1 Nh5 22.Rb4 Nf4=+ 23.Rc3 e5–/+ 24.de5 Ne6 25.Nf5 Bc5 26.Rh4 Kg8 27.Rg4? Bb6 28.f4–/+ h5?? 29.Rgg3?? g6 30.Nh4 Bd8 31.Ng6=+ fg6 32.Rg6+= Kf7 33.Bh5 Ndf8 34.Rf6 Kg7 35.Rg3 Kh8?? 36.Rh6 Nh7 37.f5 Bg5 38.Re6 Rf8 39.Rg6 Rf5 40.e6 Bf6 1–0. Mauron,Regis (1630) – Corde,Philippe (1810), Quatrieme tournoi de Noel, 2001.

5.Be2 e6 6.b5=.

5.a3 Nd7 6.c4 d4 7.d3 c5 8.Nd2 f5 9.Nb3 b6 10.g3 f4 11.Bh3 Ngf6 12.0-0 g5 13.Re1 e5 14.Bf5 Bg7 (< 14...cb4 15.Nd4 ba3 16.Ra3+/–) 15.a4 0-0 16.bc5 bc5 17.Ba3 Rab8 18.Rb1 Rb7 19.Nc5! Rb1 (19...Qc5 20.Bc5) 20.Qb1 Rb8? (better is 20...Nc5 21.Qb5 Nfd7 22.Bd7 Qd7 23.Bc5 Rd8+/–) 21.Be6?? (better is 21.Nd7 Rb1 22.Rb1 (22.Bd6 Re1 23.Kg2 Nd7 24.Be6 Kh8 25.Bd7 fg3=) 22...Qa3 23.Be6 Kh8 24.Rb8 Bf8 25.Rf8 (< 25.Nf8 fg3 26.hg3 Qd3–/+; 25.Nf6?! Qd6 26.Rb7 Be7=) 25...Qf8 26.Nf8+-) 21...Kh8=+ 22.Nd7 Rb1 23.Rb1?? (23.Bd6 Re1 24.Kg2 Nd7 25.Bd7+=) 23...Qe6–+ (23...Qa3?? 24.Rb8 Bf8 25.Rf8 (< 25.Nf8 Kg7–/+; 25.Nf6?! Qd6 26.Rb7 Be7=) 25...Qf8 26.Nf8+-) 24.Rb8 Ng8 25.Nc5 Qc6 26.Ne4 (26.a5 Qf3 27.gf4 ef4–+) 26...h6 (26...Qa4 27.Ng5 h6 28.Nf7 Kh7 29.Bf8 Bf8 30.Rf8–+) 27.a5 Kh7 (27...Qa4!? 28.Be7 Kh7 29.Rb7 Ne7 30.Re7 Qa5 31.c5–+) 28.Rb5 Nf6 29.Rc5 (29.Kg2 g4 30.Nd2–+) 29...Qa4 30.Nf6 Bf6 31.Rc7 Kg6 0–1. Ehrlich,Hans Georg (1935) – Essing,Arnold (2290), Muensterland Verbandsliga, 2003.

5.a3 Nd7 6.Be2 Ngf6 7.0-0 e6 8.d4 Be7 9.Nd2 Nb6 10.Rc1 (10.Nb3 0-0-0=) 10...0-0=+ 11.c3 Qd7 12.Qc2 a5 13.b5 Bd6 14.Rfe1 c6 15.a4 (15.bc6 Qc6 16.c4 dc4 17.Nc4 Bf4=) 15...Bf4 16.Ra1 Qc7 17.g3 Bd6 18.bc6 Qc6 19.Qb3 Rfc8 20.Bd3 Nc4 21.Bc4 dc4 22.Qc2 Bf8 23.Reb1 g6 (23...Nd5 24.Ba3=+) 24.Ne4 Nd7 25.Bc1 e5 (25...f5 26.Nd2=+) 26.Be3 (26.Rb5 f5 27.d5 Qa6=) 26...f5=+ 27.Nd2 Re8 28.Rb5 b6 (28...f4 29.gf4 ed4 30.cd4+=) 29.Rab1+= Bd6 (29...ed4 30.cd4 Rac8 31.Rc1+=) 30.Qa2 (30.d5 Qc7 31.Bb6 Nb6 32.Rb6 Rac8+/–) 30...Rac8 31.d5 Qc7 32.Bb6 Nb6 33.Rb6 Qc5 (better is 33...Bc5!? 34.Rc6 Qf7 35.Qc4 Qa7+-) 34.R1b5+- Qc7 35.Rc6 Qd7 36.Qc4 Rc6 (36...Ra8+-) 37.dc6 (37.Qc6?! Qc6 38.dc6 Rc8+-) 37...Qf7 38.Rb7 Qc4 39.Nc4 (39...Rc8 40.Nd6 Rc6 41.Nf7 Rc3 42.Ne5+-) 1–0. Lippmann,Ulrich (2060) – Brunk,Kurt, Niedersachsen–ch Seniors, 2004.

5.a3 Nf6 =.

5.b5 a6 6.a4 (6.Qe2 Nd7=) 6...ab5 (6...Nf6 7.Be2=) 7.ab5 (7.Bb5 c6 8.Be2 Qf4=) 7...Ra1 8.Ba1 Nf6 9.Bd3 Nbd7 10.0-0 e6 11.Bb2 (11.Re1 Be7=) 11...Qb6 (11...Be7 12.Re1=) 12.c4 (12.Qe2 c5 13.c4 dc4 14.Bc4 Bd6=) 12...dc4=+ 13.Bc4 Be7 (13...Bd6 14.Qe2=+) 14.d4 (14.Nc3 0-0=) 14...0-0=+ 15.Qa4 Nd5 (15...Bd6 16.Re1=+) 16.Nd2 (16.Nc3 Nc3 17.Bc3 Qd6=) 16...c6 (16...Qd6 17.Ne4 N7b6 18.Qc2=+ (18.Nd6? Na4 19.Nf5 Nb2 20.Bd5 ef5–+)) 17.Rb1 Qc7 18.bc6 bc6 (18...N7b6 19.Qb3 Nc4 20.Nc4 bc6 21.Ba3=+) 19.Qc2 Qf4 (19...Bd6 20.h3=) 20.Ne4 f5 21.Bd5 cd5 22.Bc1 Qh4 23.g3 Qh5 24.Nd2 Re8 25.Qc6= Nf8 26.Kg2 f4 27.Rb7= Qg6 28.Nb3 fg3 29.fg3 h5 30.Bf4+= Bf6 31.Be5 Be5 32.de5 Ra8 33.Nc1 Qg5 34.f4 Qg6 35.Rb4 Ra3 36.Qc5 Qf5 37.Kg1 Qg4 38.Rb8 Qd1 39.Kg2 Qf3 40.Kg1 Qd1 ½–½. Buczinski,Henryk – Wisniewski,J, corr 2.AMM Poland, 1993.

5.b5 Nd7 6.Bd3 =.

5.b5 Nd7 6.Qe2 =.

5.b5 Nf6 6.d4 (6.Bd3 Nbd7=) 6...Nbd7 (6...a6 7.a4=) 7.Bd3 e6 (7...Qe6 8.Be2=) 8.0-0 c5 9.bc6 bc6 (9...Qc6 10.f4=+) 10.Nc3 (10.Nd2 Rb8 11.Rb1 Qc7=) 10...Qb4=+ 11.Rb1 Qd4 12.Nb5 Qf4 13.g3 Qb8 14.Nd4 (14.Bf6 gf6 (< 14...cb5 15.Bb5 Qc7 16.Bd4=) 15.Nd4 Qc7–/+) 14...Qc7 15.c4 e5 (15...Nc5 16.cd5 Nd5 17.Be4–/+) 16.Qe2=+ Bc5 (16...Nc5 17.Bc2=) 17.cd5= Nd5 (17...Bd4 18.Bd4 0-0 19.dc6 ed4 20.cd7 Qd7 21.Qd2=) 18.Nf5 (better is 18.f4!?=) 18...0-0=+ 19.f4 Rfe8 (19...f6=+) 20.Rfc1 (20.fe5 Ne5 21.Rbc1=+) 20...Bf8 (20...ef4!? 21.Qf3 g6–/+) 21.Bb5 (21.Be4 N7f6 22.Be5 Qc8+=) 21...ef4 (21...Nc5!? 22.Bc4 g6 (< 22...ef4 23.Nh6 Kh8 24.Qh5=+) 23.Be5 gf5 24.Bc7 Re2 25.Be2 Nc7–/+) 22.Nh6 Kh8 23.Qf3 (23.Nf7 Kg8 24.Qg4 Nc5 (24...Kf7 25.Bc6 N5f6 26.Bf6 Re1 27.Kg2 Nf6 28.Bd5 Ke8 29.Re1 Kd8 30.Qe6+-) 25.Rc5 fg3 26.hg3 Qf7 27.Bc6 Rad8 28.Be8 Re8+-) 23...Nc5 24.Bd4 a6 (24...cb5?? 25.Qd5 Red8 26.Bg7 (26.Rc5?! Rd5 27.Rc7 Rd4 28.Nf7 Kg8=) 26...Bg7 27.Nf7 Qf7 28.Qf7+-) 25.Bc4 (25.Nf7 Qf7 26.Bc6 Ne6 27.Ba8 Ra8 28.Qd5 Rd8 29.Bg7 Bg7=+) 25...Ne6 (25...Rad8 26.Qh5 Rd7 27.Bd5 cd5 28.Qf5 fg3 29.hg3+/–) 26.Bb2? (26.Qh5 Nd4 27.Nf7 Kg8 28.Bd5–/+) 26...Qd7 27.Qh5 (27.Nf5 fg3 28.hg3 Ng5–+) 27...f6 28.Nf7 Kg8 29.Bd3 g6 30.Bg6 hg6 31.Qg6 ½–½. Mueller,Klaus Detlef – Zinnian,Boris, corr ICCF EU–M–GT–18, 1983.

5.c3 Nf6 6.d4 (6.Na3 Nbd7=) 6...e5 (6...Nc6=) 7.de5 (better 7.Bd3!?+=) 7...Qe5=+ 8.Be2 Nbd7 (8...Bd6 9.g3=+) 9.0-0= 0-0-0 (9...Bd6 10.g3=) 10.Re1 Bd6 (10...Kb8 11.Na3+=) 11.g3 Rhe8 (11...Rde8 12.Na3+=) 12.a3 (12.Na3 c6+=) 12...Nb6 (12...h5 13.Qc2 h4 14.f4=) 13.Nd2 c6 (13...Qf5 14.Nb3=) 14.Bd3 (14.a4 Qf5 15.a5 Nc4 16.Nc4 dc4+-) 14...Qg5 (14...Qh5 15.Qc2=) 15.Re8+= Re8 16.f4 (16.c4 Nc4 17.Nc4 dc4 18.Bc4 Be5 19.Be5 Qe5 (19...Re5?? 20.f4 Qf5 21.fe5 Qe5 22.Bf7+-) 20.Bf7 Re7+-) 16...Qh6 (16...Bf4 17.h4 Qh6 18.gf4 Qf4 19.b5=) 17.c4+- Nbd7 (17...Bc7 18.b5 Qh5 19.Qh5 Nh5 20.bc6 bc6 21.Bd4+-) 18.Qc2 (18.Bf5 Qh5 19.Qh5 Nh5 20.cd5 cd5 21.Rc1 Kd8 22.Nb3+-) 18...g6 (better 18...Kb8!?+-) 19.cd5+- Nd5 20.Ne4 Qf8 (20...Re6 21.b5 Be7 22.bc6 Rc6 23.Qb3 Nf4 24.Bb5+-) 21.Nd6 (21.b5!? c5 22.Bc4+-) 21...Qd6+- 22.Rd1 (22.b5 Kb8+-) 22...Qe7 23.b5 Qc5 (23...c5 24.Kf1+-) 24.bc6 (24.Qa4!? Kb8+-) 24...Qc6+- 25.Qc6 (25.Qb1!? Nc7 26.Bf1+-) 25...bc6 26.Bd4 (26.Rc1 Kc7+-) 26...Kb7 (26...Kc7 27.Kg2+-) 27.Bc4 (27.Rc1 N7b6+-) 27...f5+= 28.Rb1 (28.Bf1 Kc7+=) 28...N5b6 29.Bc3 (29.Bf1 c5 30.Bg7 Kc7+=) 29...Kc7 30.Ba5 (30.Bd3 c5+=) 30...c5 (30...Re4 31.Bb3+=) 31.Bb5 Re7 (31...Re4 32.a4+=) 32.Rd1 (32.Kg2 Re4+=) 32...Nf6 (32...Nb8 33.Bc3 Nc6 34.Kg2=) 33.Bc3 (33.Rc1 Nfd7+-) 33...Nfd7 (33...Ne4 34.Be5 Kb7 35.f3 Re5 36.fe5+-) 34.h3 (34.Kg2 Re4+-) 34...Kb7 (34...Re4 35.Kg2+=) 35.Kf1 (35.Rb1 Kc7+=) 35…a6 ½–½. Wartig,Wolfgang – Borrmann,Fritz, corr b4–00-01, 2000.

5.Nc3 e5 =.

5.Bd3 Qb4 6.Be5 Qa5 7.Nc3 +=.

5.Bd3 e5 6.Bb5 c6 (6...Nd7 7.Bd7 (7.a3 c6 8.Be2 0-0-0 9.0-0 Qf6 10.b5 c5 11.Nc3 Ne7 12.Re1=) 7...Kd7 8.a3 Re8 9.0-0 Kc8 10.d4 e4 11.fe4 de4 12.c4=) 7.Bd3 (7.Be2 Nf6 8.a3 Qe6 9.f4 e4 10.g4 Nbd7 11.f5 Qd6 12.Bd4=) 7...Nf6 (7...Nd7 8.a3 Ngf6 9.0-0 Qe6 10.Re1 Bd6 11.Nc3 0-0 12.f4=) 8.0-0 Be7 (8...Nbd7 9.Re1 Be7 10.Qe2 0-0 11.a3 Rfe8 12.Bf5+=) 9.Re1 Nbd7 (9...Nfd7 10.Qe2 0-0 11.a3 Bf6 12.Bf5=) 10.Qe2 0-0 11.Be5 (11.a3 Rfe8 12.Bf5+=) 11...Ne5 12.Qe5 Qe5 13.Re5 Bd6 14.Re2 d4 (better is 14...Bb4!? 15.Nc3 Rfe8–/+) 15.g3 (15.c3!?=) 15…b5. Matveenko,Y (2150) – Latonin,Mikhail (1960), Voronezh FIDE Open, 2011.

5.a3 e5 6.Qe2 Bd6 7.Qb5 Rb8 (7...Ngf6 8.Qb7 0-0 9.Nc3+=) 8.Qd5+= Ngf6 9.Qa2 (9.Qa5 a6+=) 9...Qe7 (9...0-0 10.Bc4+=) 10.Nc3 0-0 11.Ne4 c6 (11...b5 12.Qb3+=) 12.Bc4 (12.Qc4 Rfd8+=) 12...b5 13.Nd6 Qd6 14.Bb3 Nd5 (14...c5 15.bc5 Nc5 16.Rb1=) 15.Rd1 (15.0-0 Rbd8+=) 15...Rbe8 16.0-0 Nf4 17.Kh1 (17.a4 Qg6 18.g3 Ne2 19.Kg2 a6+=) 17...Qg6= 18.Rg1 Ne2 (18...c5 19.bc5 Nc5 20.d4 Nb3 21.cb3=) 19.Rge1+= Nf4 20.g3 Nh3 21.Kg2 Nf4 22.Kf1 Qh5 (better is 22...Nh3!?+=) ½–½. Woschkat,Karl_Heinz – Waibel,Ulrich, compuserve, 1996.

5.Bb5 c6 6.Be2 e5 =.

5.Nc3 Ngf6 =.

5.c4 Ngf6 6.b5 dc4 7.Bc4 e6 8.0-0 g6 9.d4 Bg7 10.a4 0-0 11.Nd2 c6 12.Bd3 (12.bc6 bc6 13.Ne4 Qa5=) 12...cb5=+ 13.ab5 Nb6 14.Ne4 Nbd5 15.Ba3 Re8 16.Rc1 Nf4 17.Bb1 (17.Nd6 Nd3 18.Qd3 Re7=+) 17...N6d5 (17...Qd4 18.Rc7-/+) 18.g3=+ Nh5 19.f4 Rc8?? (better 19...Nhf6=+) 20.Rc8+/- Qc8 21.Nd6 Qd8 22.Ne8 Qe8 23.Bc2 (23.Bd3 Qd7+/-) 23...Bf6 (23...Qb5!? 24.Re1 Qa5=) 24.Qd2 (24.Bd3 Ng7+/-) 24...Kg7 (24...Qb5 25.Rc1+=) 25.Be4 (better 25.Rb1+-) 25...Ne7?? (25...Qb5!? 26.Ra1 Qd7+/-) 26.Bf3 (better 26.g4!? Nd5 27.gh5 Qb5 28.hg6 hg6+-) 26...Qb5 (26...Nf5 27.Bg2 (27.Bb7?! Qb5 28.Be4 Nd4+/-) 27...Qd8 28.Rd1 (worse 28.Bb7 Nd4 29.Qd3 Qb8+-) 28...Qd4 29.g4+-) 27.Rc1 (27.g4 Qb3 28.Qe3 Qe3 29.fe3 Nf4 30.ef4 Nd5 31.Bd5 ed5+-) 27...a5? (27...Nd5+/-) 28.Qb2?? (28.g4!? Qb3 29.Rc3 Qb1 30.Bc1 Qb4 31.gh5 Nf5+-) 28...Qd3? Exerts pressure on the isolated pawn (28...Qb2 29.Bb2 b6 30.Rc7+=) 29.Bb7 (better 29.Bh5!? gh5 30.Be7 Be7 31.Rc7+-) 29...Bd4 (better 29...Nf5 30.Kg2 Bd4+= (worse 30...Nd4 31.Rc8 h6 32.Bf8 Kh7 33.Qb6+/-)) 30.Qc2?? (better 30.Ba6! Qe4 31.Qd2+/-) 30...Qa3-+ 31.Bg2 Nf5 32.Rd1 a4 (32...Nf6 33.Qe2 Qb2 34.Rd2 Qc1 35.Rd1-+) 33.Rd3?? (33.g4 Ne3! 34.fe3 Qe3 35.Kh1 Nf4 36.Qd2 Qd2 37.Rd2-+) 33...Qa1 (better 33...Qb2 34.Qb2 Bb2 35.Rd8-+) 34.Rd1 Qc3 35.Qa4?? (35.Qc3 Bc3 36.Rd8 a3-+) 35...Qb2 (better 35...Bf2 36.Kf1 Qb2-+) 36.Qc4 (36.Rf1 Nhg3! 37.hg3 Ng3-+) 36...Qf2 37.Kh1 Nhg3! 38.hg3 Ng3 39.Kh2 Ne2 40.Qd3 (40.Qe2 Qf4 41.Kh3-+) 40...Qf4 41.Kh1 Ng3 (41...Be3 42.Qe3 Qe3 43.Bf3 Qf3 44.Kh2 Qf2 45.Kh3 Qg3) 42.Kh2 Ne4 (42...Nf1 43.Kh3 Qh2 44.Kg4 Qg2 45.Qg3 Qg3) 43.Kh1 Nf2 44.Kg1 Nd3 (44...Nd3 45.Kh1 Qh4 46.Bh3 Qh3) 0-1. BeepBeepImAJeep (2775) - symbiote (2675), lichess.org, 2020.

5.c4 Ngf6 6.b5 e6 7.a4 Be7 8.Be2 0-0 9.0-0 c5 10.d4 cd4 11.Qd4 dc4 (11...Bd6 12.Qh4=+) 12.Nd2 Nb6 13.Nc4 Nc4 14.Bc4 Qd4 15.Bd4 Rfc8 16.Bb3 Bc5 17.Bf6 gf6 18.Rfd1 Rd8 19.Kf1 b6 20.Ke2 f5 21.g3 Kg7 22.f4 Kf6 23.f3 h6 24.g4 Rd4 25.Rd4 Bd4 26.Rd1 Rd8 27.gf5 (better 27.Bc2!?=) 27...Kf5-/+ 28.Bc2 Kf4 29.Be4 Bf6 (29...f5 30.Bc6-/+) 30.Rc1 Rd7 31.Rc8 Bd4 32.Rf8 (32.Bc6 Re7=+) 32...f5 33.Bc6 Re7 34.Kd3 Bc5 35.Kc4 e5 (better 35...Rh7!? 36.Rf6 Ke5=+) 36.Be4+= Ke3 37.Rf5 Rd7 38.Bd5 Re7 (38...Bd4 39.Rf6+=) 39.a5 (39.Rh5+/-) 39...e4? (better 39...Bd4+=) 40.fe4+- Rg7 41.e5 (41.a6 Rg1 42.Bc6 Rd1+-) 41...Rg1 (better 41...Rg4!? 42.Kc3 Bb4 43.Kb3 ba5+=) 42.Rf3+- Ke2 43.e6 (43.ab6 ab6 44.Be4 Rb1 45.Bb1 Kf3+-) 43...Rc1+/- 44.Rc3 Rc3 45.Kc3 ba5 46.Kc4 Be7 47.Bc6 a4 48.b6! ab6 49.Ba4 Ke3 50.Kd5 Kf4 51.Bd1 (51.Kc6 Bc5 52.Bb5 Kg4+/-) 51...Kg5 52.h3 (52.Kc6 Kf6 53.Bb3 Bc5+/-) 52...Kf6 (52...b5 53.Ke5=) 53.Bg4 (53.Be2 Bc5+=) 53...Bc5 (53...b5 54.Bd1=) 54.Bh5 Be7 55.Bf7 (55.Be2 Bc5+=) 55...Bc5 (55...b5 56.Bh5=) 56.Be8+= Be7 57.Bd7 b5 (57...h5+=) 58.Bc8 (better 58.Bb5!? Bb4 59.Bd3+/-) 58...b4= 59.Ba6 (59.Kd4 Bd6=) 59...b3=+ 60.Bd3 b2 61.Bb1 Bd8 62.Kd6 Be7 63.Kd7 h5 64.Bc2 h4 65.Bb1 Bb4 (65...Bc5 66.Bd3=+) 66.Bc2 Ba3 67.Bb1 Bb4 68.Bc2 b1Q?? (better 68...Ke5=+) 69.Bb1+- Ba3 70.Bc2 Bb4 71.Bb3 Be7 72.Bc4 Bf8 73.Bb5 Be7 74.Bc6 Bf8 75.Bb7 Bc5 76.Bc8 Be7 77.Bb7 Ke5?? (77...Bc5 78.Bf3+-) 78.Bc8 (better 78.Ke7 Kd4 79.Kd7+-) 78...Bf6?? (78...Kf6 79.Ba6+-) 79.Bb7 Bg5?? (79...Be7 80.Ke7 Kd4+-) 80.Bc6 (80.e7 Be7 81.Ke7 Kf5+-) 80...Kf4? (better 80...Kf5+-) 81.Ke8 (better 81.e7 Be7 82.Ke7+-) 81...Kg3= 82.e7 (82.Be4 Kh3 83.Kf7 Kg4=) 82...Be7 (82...Kh3 83.Bd7 Kg3 84.Kf8 Be7 85.Ke7=) 83.Bd7= Kh2?? (83...Bf6 84.Kf7 Be5 85.Bf5=) 84.Kf7 (84.Ke7 Kg3+-) 84...Kg3?? (84...Bd8 85.Bg4=) 85.Be6 (85.Ke7 Kf4+-) 85...Kh2?? (85...Ba3 86.Bg4=) 86.Bd7 (86.Ke7 Kg3+-) 86...Kg3?? (86...Bb4 87.Kf6=) 87.Be6 (better 87.Ke7 Kf4 88.Kf6+-) 87...Bd6= 88.Bd7 Be5 89.Be8 (89.Bf5 Kf4 90.Ke6 Bg7=) 89...Bf4 (better 89...Kh3 90.Bd7 Kg3-/+) 90.Bd7= Be5 91.Be6 Bf4 92.Bf5 Be5 93.Bg4 Bf4 94.Ke6 Be5?? (94...Kf2 95.Kd5=) 95.Kf5 (better 95.Ke5 Kf2 96.Kf4+-) 95...Bf4 96.Ke4 1-0. BeepBeepImAJeep (2585) - Weetik (2360), lichess.org, 2017.

5.c4 Ngf6 6.c5 a5=+.

5.c4 Ngf6 6.Bf6 Nf6=+ (< 6...gf6 7.cd5 Rg8 8.Qc2+=) 7.Qa4 c6 (7...Qd7 8.Qd7 Kd7 9.a3=+) 8.cd5 (8.b5 Qd7=+) 8...Qd5 9.Nc3 Qe5 10.Be2 Nd5 11.Nd5? (better is 11.Qa5–/+) 11...Qa1–+ 12.Bd1 0-0-0 13.Nc3 Qb2 14.Ne4 f5 15.0-0 fe4 16.Qa7 Qb4 17.fe4 e5 18.a3 Qa3 19.Qa3 Ba3 20.Bg4 Kc7 21.Rd1 Rd4 22.Kf1 Rhd8 23.Ke2 Re4 24.Kf3 Rf4 25.Kg3 Rd3 26.Bf3 g5 (27.Re1 Bd6–+) 0–1. Zimmer,Georg – Woelfelschneider,Peter, corr SOK–91–77, 1991.

5.Be2 e6 6.a3 Ngf6 (6...Qg5 7.g3=) 7.0-0 Be7 8.d3 (8.Nc3 0-0=) 8...0-0=+ 9.c4 c5 (9...a5 10.Qd2=+) 10.cd5 (10.bc5 dc4 11.d4 b6=) 10...Nd5–/+ 11.bc5 Bc5 12.d4 (12.Nd2 Qh4=+) 12...Be7 (12...Bd6 13.Nd2–/+) 13.Nc3=+ Nf4 14.Bc4 (14.Re1 Nb6=+) 14...Nb6 (14...Rc8 15.Bb3–/+) 15.Bb3 Nbd5 (15...Rc8 16.Re1–/+) 16.g3 (16.Nd5 Nd5 17.Re1 Rc8=+) 16...Nc3–/+ 17.Bc3 Nd5 18.Bb2 (18.Qd3 Nc3 19.Qc3 Qd6–/+) 18...a5 (18...Rc8 19.Qd3–/+) 19.f4 (19.Re1 Qd7=+) 19...b5 (19...Qd7 20.f5=+) 20.Qf3 (20.f5 a4 21.Bc2 Qd7=+) 20...b4 (20...a4 21.Bc2–/+) 21.ab4 Bb4 22.f5 Ra6 23.Ba3= Ba3 24.Ra3 Nb4 25.fe6 fe6 26.Qe4 Qf6 27.Qe5 Qe5= 28.de5 g5 29.f4 gf4= 30.Rf4 Rf4 31.gf4 Kf8 32.Kg2 Ke7 33.Kf3 Ra8 34.Ra1 h6 35.Ba4 Rc8= 36.Rd1 Rc3=+ 37.Kg4 Nd3 38.Rd2 Nc5 39.Ra2 Na4 40.Ra4+/– Rc5 41.Kh5 Rc2 42.h4 Rf2 43.Kh6 Kf7 44.h5 Rf3 45.Kg5 Kg7 46.Ra5 Rg3 47.Kh4 Rf3 48.Kg4 Rf1 49.Ra7 Kh6 50.Re7 Rg1 51.Kf3 Rf1 52.Ke3 Re1 53.Kf2 Rh1 54.Re6 Kh5 55.Kf3 Rh3 56.Ke4 Rh4 57.Re8 Kg6 58.Re6 Kf7?? 59.Rf6 Ke7 60.Kf5 Rh8 (60...Rh5 61.Kg4 Rh1 62.Rb6+-) 1–0. Toth,Tamas – Balogh,Istvan, Sarospatak–ch, 1998.

5.Be2 Ngf6 6.0-0 g6 7.c4 c6 8.cd5 cd5 9.Nc3 e6 10.a3 Bg7 11.Nb5 0-0 12.Nd4 Rc8 13.f4 Ne4 14.d3 Nd6 15.Qb3 Qb6 16.Nf3 Bb2 17.Qb2 Rc7 18.Ne5 Ne5 19.fe5 Nf5 20.h4 Nh4 21.d4 Nf5 22.Rfd1 Rfc8 23.Bg4 Rc2 24.Qb3 Nd4 25.Qa4 h5 26.Bh3 Ne2 27.Kh1 Qf2 28.Rf1 Ng3 29.Kh2 Nf1 30.Rf1 Qf1 31.Qd7 Qf4 Normal 0-1. carlos78 (2255) - gurkenzug (2150), Rated Blitz game, lichess.org, 2015.

5.f4 Ngf6 6.Qe2 c6 (6...e6 7.f5 Bb4 8.fe6 fe6 9.Qe6 Qe7 10.Qe7 Ke7 11.a3=+) 7.g4 (7.Bd4 Qc7 8.Be5 Qb6=+) 7...Qb6=+ 8.g5 Ne4 9.a3 a5 10.Bh3 (10.f3!? Nd6 11.Qe3=+) 10...ab4–/+ 11.ab4 (11.d3 ba3 12.Bd7 Kd7–+) 11...Ra1 12.Ba1 Qb4 13.0-0 e6 (13...h6 14.Bd7 Kd7 15.d3–/+) 14.d3 Nec5 15.f5 Qh4 16.Qe3 Bd6 (16...Kd8 17.Nd2–/+) 17.f4 Kd8 (17...h6 18.g6 fg6 19.fe6–/+) 18.Bg7 (18.fe6 Re8 19.Be5 Ne6 20.Bd6 Ng5 21.Bc7 Kc7 22.Qe8 Nh3 23.Kh1 Qg4–/+) 18...Rg8 19.fe6 fe6 20.Bd4 h6 21.Be6 Rg5! 22.Kh1 (22.fg5 Qh2) 22...Rh5 23.Rf2 Ne6 24.Qe6 Bf4 25.Qe2 (25.Nd2 Qh2 26.Rh2 Rh2 27.Kg1 Rd2 28.Bb6 Nb6 29.Qf6 Kd7 30.Qf7 Kc8 31.Qf8 Kd7 32.Qf7 Kd8 33.Qf6 Kc8 34.Qf8 Kd7 35.Qf7=) 25...Bd6 26.Rg2 Rg5 27.Bg1 Ne5 28.Nd2 Rg2 29.Qg2 Qg4 30.h3 Qg5 31.Qg5–/+ hg5 32.Be3 g4 33.d4=+ Nc4 34.Nc4= dc4 35.hg4 c3 36.Kg2+= Ke7 37.Kf3 Kf6 38.Ke4 b5 39.Kd3 b4 40.Kc4 Bf8 41.Bf4+/– Kg6 42.Bc7 Kg5 43.Ba5 Kg4 44.Bb4+- Bg7 45.Bc3 Bf8 46.Bb4 Bg7 47.c3 Kf5 48.Kc5 Ke4 49.Kc6 Bd4+/– 50.c4 Ke5 51.Bc5 Bc3 52.Kd7 Bd4 53.Bd6 Kf6 54.Bc7 Kf7 55.Bd8 Be3 56.Kc6 Ke8 57.Bb6 Bf4 58.Kd5 Kd7 59.c5 Bg3 60.c6 Kc8 61.Ke6 Bf4 62.Bc5 Kc7 63.Kd5 Bg3 64.Bb4 Bf4 ½–½. Linnanen,Lassi (2190) – Hartikainen,Markku (2290), Uusikaupunki op, 1996.

6.Bc4 e6 7.0-0 Bb4?? 8.Bg7 Bd6 9.d4+- (9.Bh8?! Qh4 10.g3 Qc4+/-).

6.Bc4 e6 7.0-0 Ngf6 8.a3 Bd6 9.Re1 c6 10.Nc3 Nb6.

6.Bc4 e6 7.0-0 Qh4 8.Qe2 Ngf6=+ (8...Bb4 9.Bg7 Ngf6 10.Bh8+-).

6.Bc4 e6 7.a3 Ngf6 8.0-0 Bd6 9.Re1 Nb6 10.Be2 0-0.

6.Bc4 e6 7.a4 Ngf6 (7...Qg5 8.Kf1-/+) 8.b5=+ Nb6 9.Be2 Nbd5 10.0-0 g6 (10...Bd6 11.a5=+) 11.d4 (11.a5 Bg7=) 11...Bg7 12.Nc3 (12.a5 Qd7=) 12...Nc3=+ 13.Bc3 Nd5 14.Bb2 0-0 15.Re1 Rc8 16.Rc1 Qd7 17.Qd2 Rfd8 18.g3 (18.Qa5 c5=+) 18...Ne7 19.Red1 Nf5 20.Qe1 Nd4 21.Bd4 Bd4 22.Kg2 (22.Rc4 e5-/+) 22...c5 23.h4 h5 24.Qd2 Kg7 25.Qc2 Qe7 26.a5 b6 27.a6 Qf6 28.Bc4 Rd6 (28...Rc7 29.Rd2-/+) 29.f4 (29.Rd2 Rcd8-/+) 29...Rcd8 30.Rd2 Bb2 31.Rd6 Rd6 (31...Bc1? 32.Rd8 Qd8 33.Qc1 Qa8 34.f3+-) 32.Rd1 Rd1 33.Qd1 Bd4 34.Qf3 e5 (better 34...Qf5-/+) 35.Qb7 ef4 36.Qa7 Be5 37.Qd7 Bb8 38.a7 fg3 39.fg3 (39.ab8N?? Qf2 40.Kh3 Qh2) 39...Qb2 (39...Ba7!? 40.Qa7 Qb2 41.Kh3 Qf6+/-) 40.Kh3+- Ba7 41.Qf7 Kh6 42.Qa7 Qc1 (42...Qb1 43.Qa8 Qf5 44.Kg2 Qc2 45.Kg1 Qd1 46.Kf2 Qd4 47.Kg2 Qd2 48.Kh3 Qd7 49.Kh2 Qd2 50.Qg2+-) 43.Qa8 (43.Qa8 Qc3 44.Qd8+-) 1-0. BeepBeepImAJeep - Orlando_Gloom (2440), lichess.org, 2018.

6.Bc4 e6 7.Qb3 Qg5 (7...Ngf6 8.f4 Qe7 9.a3 Nb6 10.0-0 a5) 8.g3 Ngf6 9.Nc3 Qh5 10.Nb5 Bd6.

6.Bc4 e6 7.b5 Nb6 (7...Ngf6 8.0-0 Nb6 9.Bb3 a6 10.ba6 Ra6) 8.Be2 Qg5 9.0-0 Nf6 10.Qc2 Nfd5.

7.0-0 e6 8.b5 (8.a3 Bd6 9.Re1 Nb6 10.Be2 0-0) 8...Nb6 9.Bb3 (9.Be2 Bd6 10.a4 Nbd5) 9...Be7 (9...a6 10.ba6 Ra6) 10.Qe2 (10.a4 Nbd5) 10...0-0 (10...a6+=) 11.Nc3 Nbd5 12.Nd5 Nd5 13.Qe4 Qd7 14.a4 Rab8 15.Rfc1 Bf6 16.Bc2 g6 17.Bf6 Nf6 18.Qe5 Ne8 19.d4 Qd6 20.Re1 Ng7 21.Be4 Rfd8 22.Rad1 Nf5 23.Bf5 Qe5 24.de5 gf5 25.Kf1 Kf8 26.Rc1 Rbc8 27.Rc5 Rd4 28.Rec1 Ra4 29.Rc7 Rc7 30.Rc7 b6 31.Ke2 Ra5 32.f4 Rb5 33.Ra7 Rb1 34.g3 b5 35.h4 ½–½. Hjortstam,Kurt – Bennett,Hilton, email 4AMM–F, 1998.

7.0-0 g6 8.a4 Bg7 9.Qb3 0-0 10.d3 Nb6 11.Nd2 Nc4 12.Qc4 Rc8 13.Rac1 Qd7 14.Rc2 (14.Nb3!? b6 15.b5=) 14...Rfd8 15.d4 a6 16.b5 ab5 17.ab5 Nd5 18.Ne4 Nb6 19.Qd3 (19.Qe2!?+=) 19...Bd4–/+ 20.Bd4 Qd4 21.Qd4 Rd4 22.Nc5 (22.h3 Nd5–/+) 22...c6–+ 23.Nb7 cb5 24.Rc8 Nc8 25.Rc1 Nd6 26.Na5 Kf8 27.Kf1 Rb4 28.h3 Rb2 29.g4 b4 30.Nc6 Nb5 (30...b3 31.Ke1–+) 31.Re1 (31.Rc5 Rb1 32.Ke2 Nd6–+) 31...e6 (31...b3 32.Re4–+) 32.Re4 Rb1 33.Kg2 (33.Re1 Re1 34.Ke1 b3–+) 33...b3 34.Rb4 Nc3 35.Ne5 b2 36.Nc4 Na4 (36...Nd1 37.g5–+) 37.Ra4 (37.h4!?–/+) 37...Rg1–+ 38.Kg1 b1Q 39.Kg2 Qb3 (39...g5!? 40.Nd2 Qb6 41.Ne4–+) 40.Ra8–/+ Kg7 41.Ne3 (41.Nd6 Qd1 42.Ne8 Kh6–/+) 41...e5 42.Re8 Qb5 43.Rd8 Qb7 44.Rd5 e4?? (better is 44...f6–+) 45.fe4= Qe7 46.f3 Qa3 47.Nc4 Qa2 0–1. Hal1958 – Treebeard, playchess.de, 2005.

7.a3 e6 8.0-0 Bd6 9.Re1 a5 10.b5 Nb6.

7.Qb3 e6 8.f4 Qe7 9.a3 a5 10.ba5 Nc5.

7.Nc3 e6 (7...Nb6 8.Be2 e6 9.a3 a5 10.b5 Bd6) 8.Qb3 Nb6 9.d3 Nfd5 10.a3 Nf4.

7.Qe2 e6 (7...Nb6 8.Bf6 gf6 9.Nc3 e6 10.a3 Bd6) 8.a3 Bd6 9.Nc3 a5 10.b5 Nb6.

6.a3 Ngf6 +=.

6.b5 Ngf6.

6.Qe2 Bb4 7.Bg7 Bd6 8.Bh8 +-.

6.Qe2 Qh4 7.Nc3 0-0-0 =+.

6.Be2 Bb4?? 7.Bg7 Ne7 8.Bh8 +-.

6.Be2 Ngf6=+ 7.a3 a5 =+.

6.Be2 Ngf6=+ 7.b5 Bd6 8.g3 c5 9.bc6 (9.0-0 0-0=+) 9...bc6–/+ 10.0-0 (10.Nc3 0-0–/+) 10...Rb8 11.Ba3 (11.Qc1!?–/+) 11...Rb1!–+ 12.Qb1 (12.Rb1 Ba3) 12...Ba3 13.Qb7 0-0 14.Qa7 Bc5 15.Qb7 Ne4 (15...Qa8 16.Rfb1–/+) 16.d3 (16.Qc6 Qe7 17.Rad1 Nb6–/+) 16...Nc3–+ 17.Bf3 Qc8 18.Qb3 Nb5 19.c3–/+ Qa8 20.a4 Nc7 21.Rfb1 Rb8 22.Qc2 Qa7 23.d4 Bd6 24.h4 c5 25.Rd1 Na6 26.f5–/+ cd4 27.fe6 fe6 28.cd4 Rf8 29.Kg2 Nb4–/+ 30.Qb3 Nb6 31.Re1 Qf7–+ 32.Re2 Nc4 33.Bg4 e5 34.de5 Ne5 35.Bh3 Kh8 36.f4 Nec6 37.Rd1 Qa7 38.Rd5 Nd5–+ 39.Qd5 Nd4 40.Rd2 Bc5 41.Bg4 Qa8 42.Qa8–/+ Ra8 43.Bd7 Kg8 44.Ra2 Kf7 45.Bg4 Ra5 46.Bd1 Kf6 47.g4 g6 48.Rb2–/+ Ne6 49.Kf3 Bd6 50.g5 –/+. Parotte,J – Verspecht,T, corr, 1994.

6.Be2 Ngf6 7.b5 Be7 8.0-0 c6 (8...Nc5 9.c3=) 9.a4 (9.Nc3 Qa5=) 9...0-0 10.d4 (10.Nc3 d4 11.Na2 cb5 12.ab5 Qb6=) 10...Qc7 11.g3 Rfc8 (11...Rac8 12.c3=) 12.Bd3= g6 (12...c5 13.c3=) 13.Nd2 Nb6 (13...c5 14.c4=) 14.a5 (14.c3 c5=) 14...Nc4 15.Nc4 dc4 16.Bc4 cb5 17.Bb3 Nd5 (17...Qc6=) 18.a6 (18.Qf3!? Qd7 19.a6=) 18...ba6+= 19.Ra6 Qb7 20.Ra1 (20.Bd5 ed5 21.Ra5 Bb4+=) 20...a5 21.Re1 (21.Qd2 a4 22.Bd5 ed5–/+) 21...Bf6 (21...a4 22.Ba2–+) 22.Qd3 (22.Qd2!? a4 23.Bd5 Qd5 24.c3–/+) 22...a4–+ 23.Bd5 Qd5 (worse is 23...ed5 24.c3–/+) 24.c3 Rc4 (24...Qb3 25.Rab1–+) 25.Red1 (25.Ba3 Rac8 26.Rec1 Bg7–/+) 25...Rac8 26.Rdc1 Be7 27.Qe2 Bd6 28.Qe1 R4c6 29.Qe3 Qb3 30.Rcb1–/+ Qc2 31.Qc1 Qd3 32.Qe1 Ra6 33.Ba3 Ba3 34.Ra3 Rac6 35.Qf1 Qc2 36.Qb5= Rc3 37.Ra4 Qe4 38.Rf1 h5 39.Qe5 Qf3 40.Qg5 Rc2 41.Raa1 R2c7 ½–½. Rebber,Christian (2155) – Richter,Christian (2200), Sueder Sommer op, 2000.

6.g3 Bb4?? 7.Bg7+- Qe7 (7...Be7 8.Bh8 Bf6 9.Bf6 Ngf6 10.Qe2+-) 8.Bh8 0-0-0 9.Bc3 Bc5 10.Bg2 Nh6 11.d4 Bb6 12.0-0 Nf5 13.Re1 c5 14.Bd5! cd4 15.Bd2 Qc5 16.Be4 d3 17.Be3 Ne3 18.fe3 dc2 19.Qc2 Qc2 20.Bc2 e5 21.Kg2 ef4 22.ef4 Nc5 23.Rd1 Re8 24.Nc3 Ba5 25.Bf5 Kb8 26.Nd5 Re2 27.Kh3 a6 28.Rac1 h5 29.Rc5 Ra2 30.Nf6 Bb6 31.Nd7 Ka7 32.Nb6 Kb6 33.Rc2 (33...Rc2 34.Bc2+-) 1–0. pumpkin (2275) – beaumont (2105), net–chess.com, 2006.

6.g3 Ngf6 7.g4 c6 =+.

5.a3 Nd7 6.Be2 Ngf6 7.0-0 c5 8.bc5 Bc5 9.Nc3 0-0 10.Rb1 a6 11.Bd3 b5 12.Re1 Nh5 13.g3 Qc7 (13...Qg5 14.Ne2=+) 14.f4 Nf4 (14...Nhf6!?=+) 15.gf4= Qf4 16.Qe2? (better is 16.Kh1=) 16...Ne5–/+ 17.Bh7 Kh8 18.Qh5 Qf2 19.Kh1 Qf3 20.Qf3 Nf3 21.Bd3 Ne1 22.Re1 b4 23.ab4 (23.Na4 ba3 24.Bg7 Kg7 25.Nc5 Rfc8–/+) 23...Bb4 24.Rg1 f6 25.Ra1 (25.Re1 Rfe8–/+) 25...a5 26.Nb5 Bd2 27.Nc7 Rab8 28.Ba3 Bc3 29.Ra2 (29.Rd1 Rf7 30.Ne6 Rfb7=+) 29...Rfc8 30.Ne6 g5 31.Bf5 (31.Kg2 Rb6 32.Nf8 Kg7–/+) 31...Rb6 32.Nd8?? (better is 32.Nf8 Re8 33.Ng6 Kg7 34.Ne7 Rb1 35.Kg2–+) 32...Rd8–+ 0–1. Rosner,Dirk – Lauer,Roland, DESC, 1999.

5.a4 Nf6 6.b5 Nbd7 (6...Bd6 7.Be2=+) 7.Bd3 (7.Be2 Bd6=+) 7...Bd6=+ 8.0-0 (8.a5 Ne5=+) 8...0-0 (8...c5 9.bc6 bc6 10.Bd4=+) 9.Nc3 c6 (9...c5 10.bc6 bc6 11.Qe2=+) 10.bc6 (10.Re1 Qc7 11.h3 c5=+) 10...bc6–/+ 11.Ne2 (11.h3 Rb8 12.Rb1 Ne5=+) 11...e5 (11...Bh2!? 12.Kh2 Qb8 13.f4 Qb2 14.Rh1–+) 12.c4 (12.Bf5 Rb8 13.Rb1 Nb6=+) 12...Rb8 (better is 12...e4 13.fe4 de4 14.Bf6 Nf6–/+) 13.cd5? (better is 13.Rb1–/+) 13...Rb2–+ 14.dc6 Nc5 15.Bf5 Nb3 16.Bc2?? Na1 17.Bf5 Nb3 18.Nc3 Nd2 19.Qa1 Nf1 20.Qb2 Nh2! 21.Kh2 e4 22.g3 ef3 23.Nb5 Bc7 24.Na7 Qd5 25.Nc8 Kh8 26.Ne7 Qc5 27.Bd7 Qe7 28.Qb7 Qe2 29.Qc7 Qf2 30.Kh3 Qg2 31.Kh4–+ f2 32.Bh3 Qh3! 33.Kh3 f1Q 34.Kh4 Qf3 35.Kh3 Qh1 0–1. rabelloenter (1960) – alexut (2040), net–chess.com, 2006.

5.a4 Nf6 6.b5 g6 7.c4 Bg7 8.Be2 Nh5 9.d4 (9.Bg7 Ng7 10.cd5 Qd5=) 9...c5 (9...Nf4 10.Bf1-/+) 10.0-0 (10.Ra2 Nf4 11.dc5 Bb2 12.Rb2 Ng2 13.Kf1=+) 10...cd4 (10...Nf4!?-/+) 11.Bd4= Bd4 12.Qd4 Qf6 13.Qf6 Nf6 14.Nc3 dc4 15.Bc4 Nbd7 16.Ne4 Ne4 (16...Ke7 17.Rfd1=) 17.fe4 Ke7 18.Be2 Rhc8 19.Rfd1 Rc2 20.Bf3 (20.Kf1 Rac8=) 20...Rac8=+ 21.g3 Ne5 22.Bg2 b6 (22...g5 23.a5=+) 23.h3 Nc4 (23...R8c3 24.a5=+) 24.Rac1 Na5 25.Rc2 Rc2 26.e5 Nb3 27.Rd3 Rc1 28.Kh2 Nc5 29.Rd6 (29.Ra3 f6=) 29...Na4=+ 30.f4 Nc5 31.Rc6 Rd1 32.Rc7 Rd7 33.Rc8 a5 34.Bc6? (better 34.ba6 Na6 35.Rc6=) 34...Ra7?? (34...Rd8 35.Rc7 Kf8 36.Kg1-/+) 35.Bf3 (35.Re8) 35...a4-+ 36.Be2?? (better 36.Bc6 Nd7 37.Bd7 Kd7 38.Rc2-/+) 36...a3 37.Bc4 a2 38.Ba2 Ra2 39.Kg1 Rb2 40.Rc7 Kf8 41.Rc8 Kg7 42.Rc6 (42.Kf1 Ne4 43.g4 g5 44.fg5 Rb5-+) 42...Rb5 43.Kf2 Na4 (43...h5 44.Kf3-+) 44.Ke3 (44.Rd6 Rb2 45.Ke3 Rb3 46.Rd3 Nc3-+) 44...Nb2 (better 44...Rb3 45.Kf2 Nc5-+) 45.Rd6 (45.Kd2-+) 45...Nc4 46.Kd4 Nd6 47.ed6 Rd5 48.Ke4 (48.Kc4 Rd6 49.Kc3 Rd1-+) 48...Rd6 49.g4 (49.h4 b5 50.g4 b4-+) 49...Rd5 50.f5 b5 51.g5 gf5 52.Kf4 Kg6 53.h4 h5 (53...e5 54.Kf3 b4 55.Kg3 b3 56.h5 Kh5 57.Kf2 b2 58.Ke2 b1Q 59.Kf3 Qc2 60.g6 Rd3) 54.gh6 Kh6 55.Kf3 Kh5 (55...b4 56.Kf4 b3 57.Ke3 b2 58.h5 b1Q 59.Kf2 Qc2 60.Ke3 Qd2 61.Kf3 Rd3) 56.Ke3 (56.Kg2 b4 57.Kg3 b3 58.Kg2 b2 59.Kg3 b1Q 60.Kf2 Qc2 61.Ke3 Qd2 62.Kf3 Rd3) 56...Kh4 (56...b4 57.Kf4 b3 58.Ke3 b2 59.Ke2 b1Q 60.Kf2 Qc2 61.Ke3 Qd2 62.Kf3 Rd3) 57.Kf4-+ Kh5 58.Ke3 Kg5 59.Kf3 (59.Kf2 b4 60.Kg2 b3 61.Kf1 b2 62.Kg2 Rd2 63.Kf3 b1Q 64.Ke3 Qd3) 59...Rd4 (59...b4 60.Kg2 b3 61.Kf3 b2 62.Kf2 b1Q 63.Kg3 Qc2 64.Kf3 Rd3) 60.Ke3-+ Re4 61.Kf3 b4 62.Kf2 (62.Kg2 b3 63.Kg1 b2 64.Kg2 b1Q 65.Kf2 Qe1 66.Kg2 Rg4 67.Kf3 Rg3) 62...b3 63.Kf3 (63.Kg1 b2 64.Kf2 b1Q 65.Kf3 Qd3 66.Kf2 Re2 67.Kg1 Qd1) 63...b2 64.Kf2 b1Q 65.Kf3 Qb3 (65...Qc2 66.Kg3 Re3) 66.Kf2 Rc4 67.Kf1 Rc2 68.Ke1 Qb1 0-1. BeepBeepImAJeep (2730) - Lalarttu (2520), lichess.org, 2019.

5.b5 c5 6.bc6 Nc6 7.Bb5 Nf6 =+.

5.b5 c5 6.bc6 Nc6 7.Nc3 Nf6 8.Be2 Be7 9.0-0 0-0 10.Re1 Rc8 11.Bf1 Na5 12.Nb5 Nc4 13.Bc4 Rc4 14.Nd4 (14.Rb1 a6 15.d3 Rh4=+) 14...Qb6–/+ 15.Nb3 Rfc8 16.Rc1 Ra4 17.Ra1 Qa6 18.Bc3 (18.Qb1 Qc4 19.Bc3 Qc7–/+) 18...Ra2 19.Ra2 Qa2 20.f4 (20.Nd4!?–/+) 20...Ne4–+ 21.Re3 Nc3 22.Rc3 Rc3 23.dc3 a5 24.g3 a4 25.Nd4 a3 26.f5 e5 27.Nb3 Qb2 28.Qd5 a2 29.Kg2 a1Q 30.Na1 Qa1 31.Qb7 Bf8 32.Qb3 Qa8 33.Kg1 Qe4 34.c4 Qf5 35.c3 e4 36.Qb6 g6 37.Qb2 h5 38.Qe2 Bc5 39.Kg2 Kg7 40.h4 Kf6 41.Qd2 Qf3 42.Kg1 e3 (43.fe3 Be3 44.Qe3 Qe3 45.Kg2 Qe2 46.Kg1 Qf3–+) 0–1. Walzer,Heinz (1905) – Schell,Walter (2020), Rhein Main op 7th, 2004.

5.b5 c5 6.d4 c4=+ 7.a4 (7.Qd2 Bd6=+) 7...a6 (7...Nf6 8.Be2=+) 8.ba6 (8.Qd2 Bd6=+) 8...Ra6 9.c3 (9.Be2 Nf6–/+) 9...Qd7 (9...Nf6 10.Be2–/+) 10.Be2 Bd6 11.0-0 Ne7 12.Re1 (12.Ba3 0-0–/+) 12...0-0 13.Qc2 Qc6 (13...Nbc6 14.Ba3–/+) 14.Nd2 (14.Ba3 Ba3 15.Ra3 Nd7–/+) 14...Nd7 15.Nf1 (15.Ba3 Ba3 16.Ra3 Rfa8–/+) 15...Rfa8–+ 16.Bd1 (16.Bc1 Ra4 17.Ra4 Qa4–+) 16...Nb6 17.Qd2 Na4 18.Ba4 (18.Ba3 Nb6 19.Bd6 Qd6 (19...Ra1?! 20.Be7 Nc8 21.Bb4=) 20.Ra6 ba6–+) 18...Ra4 19.Ra4 Ra4 (20.Bc1 b5–+) 0–1. Bernardt,Rainer Joerg – Kalinitschew,Sergey (2495), Staufer op, 2001.

5.b5 c6 6.a4 (6.Nc3 Nf6=) 6...a6 (6...Nf6 7.Nc3=) 7.c4 (7.Nc3 Nd7=) 7...ab5 (7...Nf6 8.Nc3=) 8.cb5 (8.cd5 Qd5 9.ab5 Ra1 10.Ba1 Nf6=) 8...Nf6 9.Be2 (9.Nc3 Bd6=) 9...Be7 (9...cb5 10.Bb5 Nc6 11.Qc2+=) 10.0-0 (10.Nc3 0-0=) 10...0-0 11.d4 (11.Qc2 cb5 12.ab5 Ra1 13.Ba1 Nbd7=) 11...Qb6 (11...Nbd7 12.bc6 bc6 13.Nc3+=) 12.Nd2= cb5 (12...Nbd7 13.Nb3=) 13.Bb5 (13.ab5!? Nbd7 14.Qc2=) 13...Nc6 (13...Rc8 14.Nb3+=) 14.Nb3 Rfc8 15.Rc1 (15.Bc3+=) 15...Na5 (15...Na7 16.Bd3+=) 16.Qd3 (16.Na5 Qa5 17.Qb3 Bb4=) 16...Bb4 (16...Nb3!? 17.Qb3 Ne8+=) 17.Na5 Qa5 18.g3 (18.Rfd1 Ne8=) 18...Bd2 (18...Ne8 19.Rc8 Rc8 20.Bd7=) 19.Rc2 (19.Rc8 Rc8 20.Rd1 Bh6+=) 19...Rc2 20.Qc2 Be1 (20...Ne8 21.Bd3=) 21.Qe2 (21.Bc1 h6+=) 21...Bc3= 22.Rc1 Bb2 (22...Bb4 23.Kg2=) 23.Qb2 Ne8 24.Bd7 (24.Be8 Re8 25.Qb3 g6=) 24...Nd6 25.Rc5 (25.f4 g6=) 25...Qe1 (25...Qd8 26.Bb5=) 26.Kg2 Nc4 (better is 26...Rf8!?=) 27.Qb7+/– Rf8 28.Rc8 Nd2?? (better is 28...g6 29.Bb5 Qb4+/–) 29.Rf8 Kf8 30.Qb4 (30.Qb4 Kg8 31.Qb8#) 1–0. Ambrosi,Arcangelo (1855) – Bardi,Massimo (1800), Lucca op, 2000.

5.Bb5 c6 6.Bd3 Nf6 7.b5 Be7 (7...a6 8.a4=+) 8.a4 (8.Nc3 0-0=) 8...0-0 9.0-0 Nbd7 10.Re1 Nc5 11.Bf1 cb5 (11...d4 12.Qe2=+) 12.ab5= Qc7 (12...d4 13.Na3=) 13.d4 Ncd7 14.Nd2 b6 (14...Rfc8!? 15.Rc1 Qa5=) 15.c4+- dc4 16.Nc4 (16.Bc4 Bb4 17.Rc1 Qd6+-) 16...Rac8 (16...Bb4!? 17.Re3 Nd5+=) 17.Qa4+- Ra8 (17...Qf4 18.Qa7 Rc7 19.Qa4+-) 18.Rec1 (18.Ne3 Rfc8+-) 18...Qb7 (18...Qf4 19.Ne3+-) 19.Ne3 Rfd8 20.Bd3 g6 21.Rc6 Nb8 22.Rcc1 Nd5?? (22...Nbd7 23.h3 Nd5 24.Nd5 ed5+-) 23.Nd5 Qd5?? (better 23...ed5 24.f4 Rc8+-) 24.Be4 1–0. GuestWPTY – GuestGVSH, freechess.org, 2019.

5.c4 Bb4?? 6.Bg7 Qg5 7.Bh8 +-.

5.c4 d4 6.a3 c5 7.b5 (7.bc5 Bc5 8.Qb3 Qc7=+) 7...Nf6 8.g3 Nbd7 9.Bg2 Ne5 (9...a6 10.a4=+) 10.Qe2 Bd6 11.d3 0-0 (11...Ned7!?=+) 12.f4= Ned7 13.0-0 (13.Bb7!? Rb8 14.Bc6+=) 13...Rb8 14.Nd2 Re8 15.Ne4 Qc7 16.Rfe1 Ne4 17.Be4 e5 18.f5 Nf6 19.Bg2 a6 20.a4 Qd7 21.Ba3 (21.g4!? h6 22.b6=) 21...Qf5–/+ 22.ba6 (22.Rab1 Qd7=+) 22...ba6 23.Bc6 (23.Qc2!?–/+) 23...Rec8–+ 24.Bf3 Rb3 25.Be4 (25.Red1 Re8 26.Bg2 Qg6–+) 25...Ne4 26.de4 Qd7 27.Qd1 Rcb8 28.Qc2 (28.Qe2 d3 29.Qd2 Be7–+) 28...h5 (28...Qa4 29.Rec1 Qa5 30.Qa2–+) 29.f4 (29.Qd2–+) 29...ef4 30.e5 d3 31.Qd2 (31.Qf2 fg3 32.Qf4–+) 31...Be5! (31...Qa4 32.ed6 Ra3 33.Ra3 Qa3 34.d7–/+) 32.Ra2 (32.Re5 Qd4 Double attack) 32...Qd4 (32...Bd4 33.Kg2 f3 34.Kh1 Ra3 35.Rd1 Ra2 36.Qa2–+) 33.Kg2 (33.Kh1 fg3 34.Bc1 gh2–+) 33...Ra3! 34.Ra3 Rb2 35.Ra2 Rd2 36.Rd2 fg3 37.hg3 Qc3 (37...h4 38.Kf3–+) 38.Red1 Qc4 39.Rd3 Qa4 0–1. Hilbert,Stephan J (1640) – von Buttlar,Paul (1640), FICGS, 2015.

5.c4 d4 6.Qa4 c6 7.Qb3 Nf6 8.Na3 e5 9.Nc2 Bd6 (9...a5 10.a3 Nbd7 11.f4 ef4 12.Nd4 Qe7 13.Be2 ab4 14.0-0+/–) 10.c5+= Bc7 11.Bc4 (11.f4 Nbd7+=) 11...0-0 12.0-0 Nbd7 13.f4 e4 (13...ef4 14.Nd4 Ne5 15.Rae1 Nc4 16.Qc4=) 14.Nd4 (14.g3!?+/–) 14...Bf4+= 15.d3 ed3 (15...a5 16.g3 Bd2 17.a3+=) 16.Bd3 (16.Qd3?! Ne5 17.Qc2 Nc4 18.Qc4 Qd5=) 16...a5 17.a3 ab4 (17...Ne5 18.Bc2 ab4 19.g3+=) 18.ab4+/– Ra1 19.Ra1 Be5 20.g3 h5 21.Rd1 Ng4 (21...Qe7 22.Qc4+/–) 22.h3 Bd4 23.Bd4 (23.hg4?! Bb2 24.Qb2 hg4=) 23...Ngf6 24.Bf1 (24.Kg2 Re8+/–) 24...Qc7 25.Re1 Re8 26.Re8 Ne8 27.Qe3 Ndf6 28.b5 cb5 29.Bb5 Qd8 30.Be2 Qd7 31.Bf3 Qh3 32.Bb7 h4 33.Bg2 Qg4 34.Bf3 Qg6 35.Qf4 hg3 36.fg3 Nh5 37.Qe5 ½–½. Mantu,Eugen (2440) – HM (2175), BdF OS–042 remoteschach.de, 2006.

5.c4 Ne7 6.b5 c5 7.Be2 d4 8.d3 Nf5 9.0-0 h5 (9...Bd6!?=+) 10.Nd2= h4 11.Ne4 h3 12.g3 Nd7 13.a4 Nf6 (13...Qa5 14.Bc1=) 14.Bc1 Qc7 15.Bf4 (15.a5 Be7+=) 15...e5 16.Bg5 Be7 17.a5 (17.Bf6!? Bf6 18.a5=) 17...Ne4=+ 18.fe4 Bg5 (18...Ng3 19.fg3 Bg5 20.a6=+) 19.ef5= g6 (better 19...a6!? 20.Qe1 Qe7=) 20.fg6+/- fg6 21.Bf3 Bf6? (21...a6!?+/-) 22.Be4 (22.a6 Rb8 23.ab7 Rb7 24.Bc6 Kf7+-) 22...Kf7 (22...Rb8 23.Bg6 Kd8 24.Qf3+-) 23.a6 Rab8 24.Qg4 Qc8?! (24...b6 25.f4 Rhf8+-) 25.Qg6 Ke7 26.ab7 Qg8 27.Qg8 Rhg8 28.Ra7 Rgd8 29.Rfa1 Rd7 30.Kf1 Rc7 31.Ra8 (better 31.b6 Rd7 32.Ra8 Rdd8 33.Rb8 Rb8+-) 31...Kd8 (31...Rcb7 32.Bb7 Rb7+-) 32.Rb8 (32.Rb8 Kd7 33.Bf5 Ke7 34.Raa8 Kf7 35.Rf8 Kg7 36.b8Q Kh6 37.Rf6 Kg5 38.Qg8 Kf6 39.Qe6 Kg5 40.Qg6) 1-0. BeepBeepImAJeep (2480) - Allahsizbugra (2025), lichess.org, 2018.

5.c4 Nf6 6.c5 g6 7.d4 Bg7 8.Bd3 0-0 9.0-0 Nh5 10.g3 (10.Na3!?+=) 10...Nc6–/+ 11.Bb5 Nb4 12.a3 Nc6 13.Bc6 bc6 14.Nd2 Qb8 15.Bc3 Qb5 16.Qc2 Rfb8 17.Rfb1 Qa6 18.a4 Nf6 19.g4 (19.Kg2 Nd7–/+) 19...Nd7 20.f4 Rb1 21.Rb1 Rb8 22.Rb8 Nb8 23.Nf3 Nd7 24.g5? (24.Qb3 Qd3 25.Kg2 h5–/+) 24...Qc4 (better is 24...Nc5 25.Bb4 Na4–+) 25.Ne5?? (better is 25.Qb2–/+) 25...Be5–+ 26.fe5 Kg7 (better is 26...Ne5 27.Kg2 Nd3–+) 27.a5 ½–½. Brusel Carrion,PE – Bonet Salom,Gabriel, Asturias Preferente–chT, 1997. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.ef3 e6)

5.Qe2 Bb4?? 6.Bg7 Nf6 7.Bh8+-.

5.Qe2 Nd7 6.Qb5 a5 7.a3 ab4 8.ab4 Ra1 9.Ba1 Qa8 10.Bd4 b6 11.c3 Qa2 12.Bd3 c5 13.bc5 bc5 14.Be3 c4 15.Be2 Ngf6 16.d3 Be7 17.Nd2 Qa1 18.Qb1 Qc3 19.dc4 d4 20.Bg5 h6 21.Bf6 Bf6 22.Kd1 0-0 23.Ne4 Qa5 24.Bd3 Rb8 25.Nf6 gf6 26.Qc2 Qa3 27.Ke1 Nc5 28.Bh7 Kg7 29.Be4 Rb2 30.Qd1 Qa2 0–1. themonkey (1835) – strogoff (2030), GameColony.com, 2002.

5.Qe2 Nf6 6.a3 Nbd7 7.d3 a5 8.b5 (8.Qd2 Bd6–/+) 8...c6 (8...Bd6 9.g3–/+) 9.c4 (9.bc6 bc6 10.Nd2 Bd6–/+) 9...Bd6 (9...cb5 10.Nc3 b4 11.Nd5 Nd5 12.cd5 ba3 13.Ba3–+) 10.Nd2 (10.bc6 bc6 11.d4 dc4–/+) 10...0-0 11.g3 (11.d4 c5–/+) 11...cb5–+ 12.cb5 (12.Bg2 bc4 13.dc4 Qc7–/+) 12...Rc8 13.Bh3 Rc2 14.Rb1 Qe7 15.0-0 Ba3 16.Ba3 Qa3 17.Qd1 Qd3 18.Nb3 Qd1 19.Rfd1 Ra8 20.Bf1 Rc3 21.Be2 a4 22.Nd4 a3 23.Rd2 Nc5 24.Bd1 e5 25.Nf5 d4 26.Kg2 g6 27.Nh4 d3 (27...b6 28.f4 Nfe4 29.Ra2 ef4 30.gf4–+) 0–1. Maradona (1745) – Fahrudin87 (2005), internet, 2006.

5.Be2 Bb4? 6.Bg7 Qg5 7.Bh8 Qg2 8.Bb5 c6 9.Ke2 +-.

5.Be2 Bb4?? 6.Bg7 Qg5 7.Bh8 Qg2 8.Rf1 +-.

5.Be2 Nf6 6.a3 (--> 5.a3 Nf6 6.Be2)

5.Be2 Qg5+= 6.0-0 Bb4 7.c4 (7.f4 Qh6 8.Be5 Nc6 9.Bb5 f6 10.Bc7–/+) 7...Nf6 (7...Ne7 8.Qa4 (8.a3 Bd6 9.Qb3–/+ Nd7 10.Re1–/+) 8...Nbc6 9.cd5 ed5 10.Re1–/+; 7...dc4 8.f4 Qh6 9.Bc4 Ne7 10.Be5–/+) 8.Qa4 (8.Qb3 Nh5 9.h4 Qe7 10.a3=) 8...Nc6 9.cd5 Nd5 10.Bb5 (10.Ba6!? Nf4 11.g3+=) 10...0-0–/+ 11.Bc6 bc6 12.a3 Bd6 13.Qg4 Qg4 14.fg4 Rab8 15.Bd4 c5 16.Be3 Rb3 17.Rc1 Be5 18.Ra2 Rfb8 19.Nc3 Nc3 20.dc3 Rc3 21.Rc3 Bc3 (21...Bc3 22.Kf1 Bd4–+) 0–1. Bedbur,Heinz – Buss,Michael, corr ICCF TT/4/90–13, 2003.

5.f4 Bb4?? 6.Bg7 Nf6 7.Bh8 +-.

5.f4 Qd6=+ 6.Be5 Qb4 7.Nc3 c6 8.Rb1 Qe7 9.Be2 (9.Bd4 Nh6=+) 9...f6–/+ 10.Bb8 Rb8 11.0-0 Nh6 (11...Qd6 12.f5 ef5 13.Re1–/+) 12.Re1 g6 (12...Qd6 13.Bd3–/+) 13.Bf3 (13.d4 Qf7=+) 13...Bg7 14.d4 0-0 15.Qd2 (15.Nd5 cd5 16.Bd5 Qd6 17.Be6 Kh8–/+) 15...Rfe8 16.Nd1 e5 (16...Qd6 17.Nb2–/+) 17.fe5 (17.c4 dc4 18.Qc1 Qf7 19.fe5 fe5 20.de5 Be5–+) 17...fe5 18.Ne3 (18.c4 e4 19.Be2 Nf5 20.cd5 cd5–+) 18...e4 (18...Qh4 19.Nd5 cd5 20.Bd5 Kh8 21.de5 Re5 22.Rb7 Rb7 23.Bb7–+) 19.Bd1–/+ Qf6 20.c3 Nf5 21.Nf5 (21.Bg4 Ne3 22.fe3 Qg5–/+) 21...gf5 (21...Qf5 22.Qe3–/+) 22.Qf4 Bh6 23.Qg3 Kh8 (23...Qg7 24.Qh3 Bd2–/+) 24.Bc2 (better is 24.Qh3!?–/+) 24...Rg8–+ 25.Qh3 Rg4 (26.c4 dc4–+) 0–1. Dubleumortier,Alain (2080) – Delbos,Jean_Louis (2060), corr Aquitaine–ch, 1999.

5.f4 Nf6 6.g4 (6.Qe2 Bd6=+ (6...Bb4? 7.Qb5 Nbd7 8.Qb4+-)) 6...h6 (6...Qd6 7.Be5 Qb4 8.Nc3=+) 7.g5 (7.Qe2!?=+) 7...hg5–/+ 8.fg5 Ne4 9.g6 (9.Qe2 Ng5 10.a3–/+) 9...f5 (9...Qh4!? 10.gf7 Kd7–/+) 10.d3 (10.Qe2 Qe7 11.d3 Nf6=+ (< 11...Qb4 12.c3 Qa4 13.de4 Qe4 14.Qe4 fe4 15.h4+/–)) 10...Nf6 11.Qe2 Bb4 12.c3 Bd6 13.Qe6 Qe7 14.Qe7 Ke7 15.h3 (15.c4 Nbd7=+) 15...Nbd7–/+ 16.c4 dc4 (16...Rh6 17.Rg1–/+) 17.Nd2 (17.dc4 Rh6–/+) 17...Bb4 (17...Ne5 18.Be5 Be5 19.Rb1 cd3 20.Bd3–/+) 18.Rc1 b5 (18...Nb6 A) 19.dc4? Ne4 20.Rc2 Rad8–+ (20...Bd2?! 21.Rd2 Nd2 22.Kd2–/+); B) 19.a3 Ba5 B1) 20.dc4? Ne4 21.Rc2 Nd2–+ (21...Bd2?! 22.Rd2 Nd2 23.Kd2–/+); B2) 20.Kd1=+) 19.a3 (19.Rc2 Rh6–/+) 19...Ba5 (19...c3 20.Bc3 Ba3 21.Bf6 Kf6 22.Rc7 Rhe8 23.Kd1–/+) 20.Bc3 (20.Rc2 Rh6=+) 20...Bc3–/+ 21.Rc3 Nd5 22.Rc1 c3 23.Nb1 Ne5 24.Nc3 Nf4 25.Kd2 c6–+ 26.Ke3 Neg6 27.Ne2 Ne2 28.Be2 Rac8 29.Rc5–/+ Kf6 30.Kd2 Rh4 31.Rhc1 Ne5 32.Rb5 Nc4! 33.Rc4 Rc4 34.Rf5 Kf5 35.dc4 Rb8 36.Kc3 c5 37.Bf3 Ke5 38.Bd5 Rf8 39.f3 Rh8 40.Kb3 Rh3 41.Ka4 Kd4 42.Kb5 Rh6 43.a4 Rb6 44.Ka5 g5 (45.Bf7 Rb3–+) 0–1. Shirazi,Kamran G (2410) – Christiansen,Larry Mark (2560), Los Angeles, 1985.

6.c4 dc4 7.Bc4 Nbd7 8.0-0 Nb6 9.Bb3 g6 10.Re1 Bg7 11.Nc3 0-0 12.Ne4 (better 12.d4!?=) 12...Ne4-/+ 13.Bg7 Nf2 (13...Kg7?! 14.fe4 Qd4 15.Qc2=) 14.Kf2 Kg7 15.d4 c6 16.Kg1 Nd5 17.Qd2 Qf6 18.Rad1 Rfd8 19.Re5 Rd7 20.Bd5 cd5 (20...Rad8 21.Qe3 Rd5 22.f4-/+) 21.Rc1 Qe7 22.Qc3 Rd6 23.b5 (23.Qc7!? Qc7 24.Rc7=+) 23...a6-+ 24.a4 ab5 25.ab5 Ra2 26.Qb3 (better 26.Ree1-/+) 26...Ra8 (better 26...Qh4!? 27.Qa2 Qd4 28.Qf2 Qe5-+) 27.Re2 (27.Qc3 Rdd8 28.Qe1-+) 27...Rd7-/+ 28.Rec2 Ra3 29.Qb2 Rd3 (29...Ra4 30.Rc5-+) 30.Kh1 (30.Rc3 Rc3 31.Qc3 b6-/+) 30...Qf6 31.Rd2 Rd2 32.Qd2 Rd8 33.h3 Ra8 34.Kh2 (34.Rc7!?-/+) 34...Ra4-+ 35.Rd1 b6 36.Qe3 (36.Kg1 h5-+) 36...Rb4 37.Qd3 Qf4 38.Kh1 Rb2 39.Qc3 Rb5 40.Ra1 (40.Kg1 Ra5-+) 40...h5 41.Rd1 h4 42.Qe1 (42.Kg1 Ra5-+) 42...Rb2 43.Rb1 (43.Qc3 Rf2 44.Qb3-+) 43...Rb1 44.Qb1 Qd4 45.Qe1 (45.Qb5-+) 45...b5 46.Qa5 (46.f4 Qf4 47.Qe2-+) 46...b4 47.Qa4 Qc3 48.Kh2 b3 49.Qa3 Qe5 50.Kh1 b2 51.Qb3 Qd4 (51...Qe1 52.Kh2 Qc1 53.f4 b1Q 54.Qb1 Qb1 55.g4 Qe1 56.f5 Qf2 57.Kh1 ef5 58.gf5 Qf5 59.Kg2 d4 60.Kh2 d3 61.Kg2 d2 62.Kg1 d1Q 63.Kg2 Qfc2) 52.Kh2 Qf4 53.g3 Qd2 54.Kh1 (54.Kg1 hg3 55.Qc3 Qc3 56.Kg2 b1Q 57.h4 Qd2 58.Kg3 Qg1 59.Kh3 Qgg2) 54...Qc1 (54...hg3 55.Qc3 Qc3 56.Kg2 b1Q 57.h4 Qd2 58.Kg3 Qg1 59.Kh3 Qgg2) 55.Kg2 b1Q 56.Qb1 Qb1 57.gh4 Qc2 58.Kg3 Qe2 (58...Qe2 59.f4 f5 60.h5 gh5 61.h4 d4 62.Kh3 Qg4 63.Kh2 d3 64.Kh1 Qe2 65.Kg1 d2 66.Kh1 d1Q) 0-1. Shuvalov,Evgenij (2145) - Begunov,Konstantin (2275), Titled Tuesday intern op, 2022.

6.c4 Nc6 7.Nc3 (7.b5 Ne7=) 7...dc4+= 8.Bc4 Bd6 (8...a5 9.Bb5=) 9.0-0 (9.Bb5 0-0 10.Bc6 bc6=) 9...0-0+= 10.Re1 e5 (10...Bf4 11.Ne4 Ne4 12.fe4+=) 11.Qc2 (11.Ne4 a5 12.b5 Nd4+=) 11...g6 (11...a5 12.b5 Nd4 13.Qd3=) 12.Nb5 (12.Ne4 Nd4 13.Qd3 Ne4 14.Re4 Ne6+/–) 12...a6 13.Nd6 Qd6 14.d3 (14.f4!? ef4 15.Qc3+=) 14...Nd4= 15.Qd2 (15.Bd4 Qd4 16.Bb3 c6+=) 15...b5 (15...Rfe8 16.a4=) 16.Ba2= c5 (better is 16...Rfe8!?=) 17.bc5 (17.f4 Nd7 18.bc5 Nc5 19.fe5 Qd7+/–) 17...Qc5 18.Qg5 (better is 18.f4 Qc2 19.Rad1 Qd2 20.Rd2+-) 18...Kg7? (better is 18...Nd7+=) 19.Re5+- (19.Qe5?! Qe5 20.Re5 Rad8+/–) 19...Qd6 20.Rc1 (20.Rae1 Rad8+/–) 20...h6 (20...Rac8 21.Rb1+/–) 21.Qg3 Nh5?? 22.Rh5 Qg3 23.Bd4 f6 24.hg3 gh5 25.Rc7 Kg6 26.Bd5 (26.Bd5 Rae8 27.Be4 Re4 28.de4+-) 1–0. Wall,Bill – SantaCruz, internet, 2002.

6.c4 Be7 7.cd5 ed5 8.Be2 0-0 9.0-0 Re8 10.Re1 c5 11.Bb5 Nc6 12.bc5 Bc5 13.Re8 Ne8 14.Nc3 Qb6 15.Qf1 Nc7 16.a4 Nd4 17.Rb1 Qh6 18.Qd3 Bd6 19.h3 Qf4 (worse is 19...Ncb5 20.Nd5 Qg6 21.Qg6 hg6 22.ab5 Nb5 23.Kf1=) 20.g3 Qd2! (20...Nf3 21.Kg2 Nh4 22.Kf1+/– (worse is 22.gh4 Nb5 23.Qb5 d4–/+)) 21.Qd2 Nf3 22.Kg2 Attacks the isolani on d5 22...Nd2 23.Rd1 Nb5 24.Rd2 Nc3 25.Bc3 Rd8 26.Rd5 Bc7 27.Rd8 Bd8 28.g4 a6 29.f4 b5 30.ab5 ab5 31.Bb4 g6 32.f5 gf5 33.gf5 Kg7 34.Kf3 Kf6 (34...Kf6 35.Kf4 Bc7 36.Ke4 h5–/+) 0–1. marekt (2430) – michaelbuss, ChessWorld.net, 2003.

6.d4 a5 7.c4 (7.ba5 Bd6=+) 7...dc4 (7...ab4 8.c5 ba3 9.Ra3 Ra3 10.Na3–/+) 8.Bc4 (8.b5!?=+) 8...ab4–/+ 9.ab4 (9.0-0 Nc6–/+) 9...Bb4 10.Nc3 Ra1 11.Ba1 Nd5 12.Bd5 Qd5 13.Qa4 Nc6 14.0-0 Qa5 (14...Qd4 15.Ne4 Qa7 16.Qa7 Na7 17.Bg7+/–) 15.Qa5 Ba5 16.Ne4 (16.d5 ed5 17.Nd5 0-0–/+) 16...Ke7–+ 17.Rc1 Ra8 18.Bb2 Bb6 19.Nc5 Ra2 20.Bc3 e5 21.Re1 Rc2 22.Ba1 Ba5 (23.Rd1 Nd4 24.Bd4 ed4–+) 0–1. kode (2345) – pierred (2595), net–chess.com, 2008.

6.d4 c6 7.c4 dc4 8.Bc4 Nd5 9.Nc3 Bd6 10.Nd5 cd5 11.Qa4 (11.Be2 0-0=) 11...Ke7 (11...Nc6!? 12.Be2 0-0=) 12.Bd3+= Nd7 13.0-0 Nb6 14.Qb3 Qc7 15.g3 Nc4 16.Rac1 b5 17.f4 h5 18.Rfe1 h4 19.Bc4 bc4 20.Qf3 Kd7 21.f5 Rae8 22.fe6 fe6 23.Qg4 Re7 (23...Kc6 24.Re6 Qd7 25.Rg6 Qg4 26.Rg4=) 24.Re6 Kc6 (24...Re6 25.Qg7 Double attack) 25.Re7+- Qe7 26.Bc3?? (better is 26.Qf3+-) 26...hg3= 27.hg3 g5 28.Bd2 Qh7 29.Qf3 Qh2 30.Kf1 Qh1 31.Qh1 Rh1 32.Ke2 Rc1 33.Bc1 g4 34.f3 gf3 (worse is 34...Bg3 35.fg4 Bd6 36.Kd2+/–) 35.Kf3 Kb5 36.g4 Bf8 37.g5 c3 38.Ke2 Kc4 39.Be3 a6 40.Bf2 c2 (better is 40...Bg7!?=) 41.Kd2+/– Kb3 42.Be3 Bg7 (42...Ka3? 43.Kc2 Kb4 44.Bf4+-) 43.Kd3 Ka3 44.Kc3 Ka4 45.g6 Kb5 46.Bd2 Kc6?? (better is 46...Bh8+/–) 47.Kc2+- Kd7 (47...Bd4 48.Bc3 Kd6 49.Bd4+-) 48.Kc3 Ke6 (48...Ke8 49.Bf4+-) 49.Bf4 Bf8 50.Be5 Be7 51.Kb3 Bd8 52.b5! a5 (52...ab5 53.Kb4 Decoy) 53.g7 Kf7 54.Bd6 Kg7 55.Bc5 Kf7 56.b6 Ke6 57.b7 (57.b7 Bc7 58.Ba7+-) 1–0. Pfeiffer,Alfred – Hahn,Klaus, BCCA–Canada, 1977. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.ef3 e6 5.a3 Nf6)

6.Be2 a5 7.b5 c6 (7...Bd6 8.Nc3=) 8.c4 (8.Nc3 Bd6=) 8...d4 (8...dc4 9.Nc3=) 9.Bd3 (9.d3!?=) 9...Bd6 10.0-0 (10.Qc2 Qb6 11.a4+=) 10...Nbd7 (10...Qb6 11.a4+=) 11.a4 (11.Bd4!? Nc5 12.Bc5 Bc5 13.Be4 Ne4 14.fe4=) 11...Qc7 (11...Nc5 12.Bc2–/+) 12.g3 (12.Bd4? Bh2 13.Kh1 Qf4 14.Bf6 Qf6 (worse is 14...Nf6 15.g3 Bg3 16.fg3 Qg3 17.Qe2+=) 15.Kh2 Qa1–+) 12...Ne5 (12...Nc5 13.Qe2 Rd8 14.Na3+= (14.Bd4? Nd3 15.Bf6 gf6–+)) 13.Qe2 b6 (13...Nd3 14.Qd3 c5 15.Qe2=) 14.Be4 (better is 14.Bd4!? Nd3 15.Qd3 cb5 16.ab5+=) 14...Ne4= 15.Qe4 (15.fe4 cb5 16.cb5=) 15...0-0 (15...f5!? 16.Qe2 cb5+=) 16.d3 (16.Bd4 c5 17.Bc3 f5+=) 16...f5 (16...c5!?=) 17.Qe2+= Qb7 (17...f4 18.Bd4 fg3 19.fg3 cb5 20.f4+=) 18.Nd2 (better is 18.Bd4 Nf7 19.bc6 Qc6 20.Qe6+/–) 18...Rf6?? (18...c5 19.f4 Nf7 20.Qe6 g6+/–) 19.Bc1 (better is 19.Bd4 cb5 20.ab5+-) 19...g5 (better is 19...c5+=) 20.g4?? (better is 20.bc6!? Nc6 21.Rb1=) 20...Rh6 (20...c5 21.Bb2–+) 21.gf5? (21.c5 bc5 22.Nc4 Nc4 23.Bg5–+) 21...ef5–+ 22.Kg2 (22.c5 bc5 23.b6–+) 22...Rh2 (better is 22...cb5 23.Rg1 Rg6 24.ab5 g4–+) 23.Kh2+/– Nf3? (23...Nd3 24.Kg1 Nf4+=) 24.Kh1+- Nd2 (24...Ne5 25.f3 c5 26.Rg1+-) 25.Kg1 0–1. Dos Anjos,Diovana F – Malanowski,Lara C, JOJUPS – Divisao A – Convencional Women, 2014.

6.Be2 Bd6 7.0-0 0-0 8.c4 dc4 9.Bc4 Nbd7 10.Nc3 a5 11.ba5 (11.b5 Nb6 12.d3 Be5=+) 11...Ra5 12.d3 c6 13.Ne4 Ne4 14.de4?? (better is 14.fe4 b5 15.Bb3=+) 14…Bh2–+ (15.Kh2 Rh5 16.Kg1 Qh4 17.Qd7 Qh2) 0–1. Whiterose – michaelbuss, ChessWorld.net, 2005.

6.Be2 Bd6 7.0-0 0-0 8.Re1 Nbd7 9.d4 c6 10.Nd2 Qc7 11.Nf1 b5 12.Bc3 Nb6 13.Bd2 Rfe8 14.Bg5 Nfd7 15.c3 e5 16.Qc2 a5 17.Bd3 h6 18.Bh4 ab4 19.ab4 Ra1 20.Ra1 ed4 21.cd4 Nc4 22.Qc3 Qb6 23.Bg3 Be7 24.Re1 Nf8 25.Bf5 Qa7 26.Bh4 Ne6 27.Be7 Re7 28.Be6 Re6 29.Re6 fe6 30.h3 Qc7 31.Ne3 e5 32.de5 Qe5 33.Qe5 Ne5 34.Nf5 Kf7 35.Nd4 ½–½. marekt – Morphystyle, ChessWorld.net, 2004.

6.Be2 Nbd7 7.0-0 Bd6 8.Nc3 0-0 9.Nb5 Be7 10.Nd4 c6 11.f4 a5 12.b5 c5 13.Nf3 Bd6 14.Ne5 Qc7 15.Nd7 Nd7 16.f5? (better 16.g3!?=) 16...ef5 17.Bf3? (17.g3 Rfe8-/+) 17...d4 (better 17...Bh2 18.Kh1 Be5-+) 18.g3-/+ Rad8 19.Qe2 Rfe8 20.Qd3 g6 21.Bg2 Ne5 22.Qb3 c4 23.Qa4 Bc5 24.Rae1 b6 25.Kh1 c3 26.dc3 dc3 27.Bc3 Ng4 28.Re8 Re8 29.Bd4 Re2 30.Bc5?? (30.Qc4 Rd2 31.Bc5 bc5 32.Kg1+=) 30...Qc5-+ (30...bc5?! 31.Bf3 Rf2 32.Rf2 Nf2 33.Kg2=) 31.Qf4 Rf2 (31...Nf2 32.Rf2 Rf2 33.Qb8 Kg7 34.h4-+) 32.Qb8 Kg7 33.Re1 (33.Qb7 Rc2 34.h3-+) 33...Rg2! 34.Kg2 (34.Kg2 Qf2 Mate attack) 34...Qf2 35.Kh3 Qh2 0-1. carlos78 (2305) - KillerBateman (2400), Rated Blitz game, lichess.org, 2015.

6.Be2 Nbd7 7.f4 Bd6 8.g3 c6 9.0-0 0-0 10.d4 a5 11.c3 b5 12.Nd2 Nb6 13.Qc2 Qc7 14.Rfe1 Rfd8 15.Nf1 Ra7 16.Ne3 Rda8 17.Bf3 g6 18.Kg2 Kg7 19.h4 h5 20.Qd2 Ra6 21.f5 ab4 (21...gf5?? 22.Nf5 ef5 23.Qg5 Kh7 24.Qf5 Kg7 25.Qg5 Kh7 26.Qf6+-) 22.cb4 Rf8 (22...gf5? 23.Nf5 ef5 24.Qg5 Kh7 25.Qf5 Kg7 26.Qg5 Kh7 27.Qf6+-) 23.Bc1 Ng8 (23...gf5 24.Nf5 ef5 25.Qg5 Kh7 26.Qf5 Kg8 27.Qg5 Kh7 28.Qf6+-; 23...ef5 24.Nf5! Kg8 25.Qh6 gf5 26.Qg5 Kh7 27.Qf5 Kg8 28.Qg5 Kh7 29.Qf6+-) 24.fe6 fe6 25.Qe2 (25.Rb1 Qf7 26.Qe2 Nf6=) 25...Qf7 (25...Bb4!? 26.Nc2 Bc3–/+) 26.Bd2 Ra7 27.Nf1 (27.Rac1!? Ne7 28.Rc3=) 27...Nc4+= 28.Bg5 e5 29.de5 Be5 30.Rac1 (30.Ra2 Bc3 31.Rb1 Ne7–/+) 30...Bf6 (30...Re8 31.Ne3 Ra3 32.Nc4 bc4 33.Rc4 Rf3 34.Rc2–/+) 31.Nh2 (better is 31.Bf4!?–/+) 31...Ra3–+ 32.Qe6 Bg5 33.Qf7 Rf7 34.hg5 Ne7 35.Re6 Ra2 36.Rce1 Kf8 37.R1e2 Ra4 38.g4? (better is 38.Re1–+) 38...h4 39.Kh3 Rb4 40.Kh4 Rb3 (40...Ra4 41.Kg3–+) 41.Rf6? (41.Ra2 Rc3 (41...Rbf3 42.Ra8 Kg7 43.Nf3 Rf3 44.Re7 Rf7 45.Rf7 Kf7 46.Ra7 Kf8 47.f4+/–) 42.Ra8 Kg7+=) 41...d4 (better is 41...b4 42.Re1 Rc3 43.Be2–+) 42.Ra2 d3 43.Ra8? (43.Nf1–+) 43...Kg7 44.Rd8 (44.Rf7 Kf7 45.Ra1 b4–+) 44...Rf6 45.gf6 Kf6 46.g5 Kf7 47.Bg4 d2 48.Nf3 Nd5 49.Nd4 Rd3 50.Nc6?? Nf4–+ 51.Rd3 Nd3 52.Kg3 Ndb2 53.Nd4 Nd6 54.Kf4 d1Q 55.Bd1 Nd1 56.Ke5 Ke7 57.f4 Ne3 58.Nc6 Kd7 59.Nd4 Nef5 60.Nc2 Ke7 61.Nb4 Nc4 62.Kd5 Nfe3 63.Kc5 Na3 64.Kd4 Nac2 (64...Nac2 65.Kc5 Nb4 66.Kb4 Ke6 67.Kb5 Kf5–+) 0–1. Koroljkov,A – Dmitriev,Igor (2345), RUS–ch Seniors, 2009.

6.f4 Bd6 7.Bd3 (7.Qf3!?=) 7...Bf4–/+ 8.0-0 (8.Qf3 Qd6–/+) 8...Nbd7 9.Qe2 (9.Re1 Qe7–/+) 9...0-0 10.g3 (10.Re1 c5 11.g3 Bd6 12.bc5 Nc5–+) 10...Bd6 11.Nc3 c6 12.f4 (12.Rfe1 Re8–+) 12...Re8–+ 13.Rae1 e5 14.fe5 Ne5 15.Na4 b5 16.Nc5 Nd3 17.Qd3 Bc5 18.bc5 Ne4 19.Qe3 (19.Bd4 Re6–+) 19...Re6 20.Qf4 (20.Kg2 Qf8–+) 20...Qe7 (20...Qf8 21.Bd4–+) 21.d3 (21.Bd4 Re8–+) 21...Nc5 (21...Ng5 22.Re6 Ne6 23.Qf3–+) 22.Qg4 Qf8 23.Kh1 (23.Re5 Re5 24.Be5 Re8–+) 23...Rae8 24.Re6 Ne6 25.Re1 (25.Qf3 Qe7–+) 25...c5 26.a4 (26.c3 a6–+) 26...b4 27.Re5 (27.Rf1 d4 28.Bc1 Re7–+) 27...d4 28.Rd5 (28.Rh5–+) 28...Nc7 29.Rd7 (29.Rh5 Re1 30.Kg2 Ne6–+) 29...Re1 30.Kg2 Qa8 (30...Ne6 31.Rb7 Rb1 32.Bd4 Nd4 33.c4–+) 31.Kh3 Ne6 32.Qf5 f6 (33.Qd5 Qd5 34.Rd5 Re2–+) 0–1. Garfield85 (1925) – Fahrudin87 (2045), internet, 2006.

7.Nd2 0-0 8.Nb3 A) 8...Nbd7 9.Bd3 Nh5 10.g3 Nhf6 11.0-0 Re8 12.Re1 c6 13.f4 Qc7 14.Qf3=; B) 8...Re8 9.Bd3 Nh5 10.g3 Nf6 11.0-0 Nbd7 12.Re1 c6 13.f4 b5 14.Nc5=; C) 8...c6 9.Bd3 (9.h3 Nh5 10.g3 Nf6 11.Bd3 Nbd7 12.0-0 b5 13.Nc5 Qc7 14.Re1=+; 9.g3 Nbd7 10.Bd3 b6 11.Qd2 a5 12.0-0 a4 13.Nc1 c5 14.Bb5=+) 9...b6 10.0-0 Qc7 11.h3 Nbd7 12.Re1 Rfe8 13.Qd2 a6 14.Qc3=; D) 8...Qe7 9.Bd3 c6 10.0-0 Qc7 11.h3 Nbd7 12.Re1 Rae8 13.Bc1 e5 14.Be3=+.

7.Nd2 0-0 8.Bc3 A) 8...a5 9.Bd3 (9.ba5 Nc6 10.a6 ba6 11.Bd3 Qe7 12.0-0 Ba3 13.Nb1 Bb4 14.Ba6–/+) 9...ab4 10.ab4 Ra1 11.Qa1 Nc6 12.b5 Nb4 13.Bb4 Bb4 14.c3=+; B) 8...Nbd7 9.Bd3 Nb6 10.Rb1 c6 11.0-0 Nh5 12.g3 Nf6 13.Re1 Na4 14.Ba1=+; C) 8...c6 9.Bd3 Nbd7 10.0-0 Qc7 11.h3 Nh5 12.Re1 Nf4 13.Bf1 Nb6 14.a4=+; D) 8...Nh5 9.g3 (9.Nb3 Re8 10.Nc5 Bc5 11.dc5 e5 12.Bd2 Nf4 13.g3 Ne6 14.Bd3=+) 9...a5 10.ba5 Nc6 11.a6 ba6 12.Bd3 Qe7 13.0-0 Ba3 14.Nb1=+.

7.Nd2 0-0 8.c4 c6 (8...a5 9.b5 (9.c5 Bf4 10.b5 c6 11.g3 Bh6 12.f4 a4 13.Rb1 Qa5 14.Qc2=) 9...Nbd7 10.c5 Bf4 11.Bd3 Re8 12.0-0 a4 13.Re1 Re7 14.Rb1+=; 8...dc4 9.Nc4 (9.Bc4 Nbd7 10.0-0 Nb6 11.Bd3 a5 12.b5 Nbd5 13.Nc4 Nf4 14.Bb1=+) 9...Bf4 10.Bd3 Nc6 11.g3 Bh6 12.Be4 Ne4 13.fe4 b5 14.Ne3=; 8...Bf4 9.Bd3 (9.c5 Nc6 10.Be2 Nd7 11.b5 Ne7 12.g3 Bd2 13.Qd2 Nf5 14.Qf4=) 9...Nc6 10.0-0 dc4 11.Nc4 Qd5 12.g3 Bh6 13.Ne3 Qd6 14.Nc4=) 9.Bd3 (9.c5 Bf4 10.Bd3 a5 11.g3 Bh6 12.ba5 Qa5 13.f4 Nbd7 14.0-0=) 9...Nbd7 (9...Bf4 10.0-0 a5 11.c5 ab4 12.ab4 Ra1 13.Ba1 b5 14.g3=) 10.0-0 (10.c5 Bf4 11.g3 Bh6 12.0-0 Re8 13.Re1 g6 14.Qe2=) 10...e5 (10...Qc7 11.h3 dc4 12.Nc4 Rfd8 13.Qc2 Nb6 14.Nb6=+) 11.Qc2 (11.c5 Bc7 12.Re1 Re8 13.Qc2 Re7 14.Rad1=) 11...ed4 12.Bd4 (12.cd5 cd5 13.Bd4 Qb8 14.h3=) 12...Ne5 (12...Qc7 13.h3 Bh2 14.Kh1 Be5=) 13.Be5 (13.c5!? Nd3 14.Qd3+= (worse 14.cd6 Nf4 15.Be5 Ng6=+)) 13...Be5=+ 14.Rae1 (14.Rad1=+) 14...Qd6 15.g3 Rad8 16.c5 Qb8 17.Re2 Rde8 18.Rfe1 Bc7 19.Nb3 Re2 20.Re2 ½–½. Cafferty,Bernard (2125) – Wallis,Ian J (2000), Hastings ENG, Open, 2012. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.ef3 e6 5.a3 Nf6)

7.Nd2 0-0 8.Bd3 A) 8...c6 9.c4 (9.0-0 a5 10.Bc3 ab4 11.ab4 Na6 12.Qb1 Qe7 13.b5 Nb4 14.Bb4–/+; 9.Nb3 b6 10.0-0 Qc7 11.h3 Nbd7 12.Re1 Rfe8 13.Qd2 Bh2 14.Kh1=+) 9...Nbd7 10.c5 Bf4 11.g3 Bb8 12.0-0 Re8 13.Re1 e5 14.Qc2=; B) 8...Nh5 9.g3 a5 10.b5 c6 11.c4 dc4 12.Nc4 Nf6 13.Qa4 Bc7 14.Rc1=; C) 8...a5 9.ba5 (9.c3 c6 10.0-0 Qc7 11.h3 Nbd7 12.Re1 b5 13.Qc2 Rfe8 14.Re2=+; 9.b5 c6 10.c4 dc4 11.Nc4 cb5 12.Nd6 Qd6 13.Bb5 Nc6 14.Rc1=+; 9.Bc3 ab4 10.ab4 Ra1 11.Qa1 Nc6 12.b5 Nb4 13.Bb4 Bb4 14.c3=+) 9...Nh5 10.g3 Ra5 11.c4 Nf6 12.c5 Be7 13.0-0 b6 14.Re1=.

7.Nd2 0-0 8.Be2 A) 8...a5 9.Bc3 (9.c3 c6 10.0-0 b5 11.Re1 Nbd7 12.Bd3 Qc7 13.h3 Rfe8 14.Nb3=+; 9.ba5 Ra5 10.0-0 c6 11.c4 Qc7 12.h3 dc4 13.Nc4 Ra7 14.Qc2=+; 9.b5 c6 10.c4 dc4 11.Nc4 Bf4 12.Qa4 Nd5 13.Rb1 Qg5 14.g3=+) 9...ab4 10.ab4 Ra1 11.Qa1 Qe7 12.Qb2 Na6 13.b5 Nb8 14.0-0=+; B) 8...c6 9.c4 (9.Nb3 Qc7 10.h3 Nbd7 11.0-0 Nb6 12.Bc1 Rfe8 13.Re1 Nbd7 14.Be3=; 9.0-0 a5 10.Bc3 Qc7 11.h3 ab4 12.ab4 Nbd7 13.Qb1 b6 14.Re1–/+; 9.Bd3 a5 10.Bc3 ab4 11.ab4 Na6 12.Ba6 Ra6 13.Ra6 ba6 14.Nb3=+) 9...Nbd7 10.c5 Bf4 11.g3 Bh6 12.0-0 b6 13.Re1 a5 14.f4=; C) 8...Nh5 9.g3 a5 10.b5 c6 11.c4 dc4 12.Nc4 Nf6 13.Qa4 Nd5 14.Rc1=+.

7.Nd2 a5 A) 8.Bc3 A1) 8...0-0 9.ba5 (9.Bd3 ab4 10.ab4 Ra1 11.Qa1 Nc6 12.b5 Nb4 13.Bb4 Bb4 14.c3=+) 9...Nc6 10.Nb3 e5 11.Be2 ed4 12.Nd4 Nd4 13.Bd4 c5 14.Bf6=+; A2) 8...ab4 9.ab4 Ra1 10.Qa1 0-0 11.Qa7 Qc8 12.Bd3 Nc6 13.Qa3 e5 14.de5=+; B) 8.c3 0-0 (8...c6 9.Bd3 0-0 10.0-0 Qc7 11.h3 Nbd7 12.Re1 b5 13.Qc2 Rfe8 14.Re2=+; 8...ab4 9.ab4 Ra1 10.Qa1 0-0 11.Bd3 b6 12.0-0 c6 13.Re1 Qc7 14.h3=+) 9.Bd3 c6 10.0-0 Qc7 11.h3 Nbd7 12.Re1 b5 13.Qc2 Rfe8 14.Re2=+; C) 8.b5 C1) 8...0-0 9.c4 (9.Bd3 c6 10.c4 dc4 11.Nc4 cb5 12.Nd6 Qd6 13.Bb5 Rd8 14.Rc1=+) 9...Nbd7 10.c5 Bf4 11.Bd3 Re8 12.0-0 c6 13.b6 e5 14.Qc2=; C2) 8...Bf4 9.g3 (9.Bd3 0-0 10.0-0 c6 11.Re1 cb5 12.Bb5 Nc6 13.Rb1 Qb6 14.Bd3=+; 9.Rb1 0-0 10.Bd3 c6 11.0-0 cb5 12.Bb5 Nc6 13.Qe2 Qb6 14.Nb3=+) 9...Bd6 10.Bd3 c6 11.0-0 0-0 12.a4 cb5 13.ab5 Qc7 14.c4=; C3) 8...Nbd7 9.Bd3 Nh5 10.g3 0-0 11.c4 dc4 12.Nc4 Nhf6 13.Be4 Nd5 14.Nd6=; C4) 8...c6 9.c4 dc4 10.Nc4 0-0 11.Qc2 Bf4 12.Ne5 cb5 13.Bb5 Na6 14.0-0=+; D) 8.ba5 D1) 8...Ra5 9.Bd3 (9.Nb3 Ra8 10.Bd3 0-0 11.0-0 c6 12.Re1 Qc7 13.h3 b5 14.Qd2=+; 9.c4 0-0 10.c5 Bf4 11.Bd3 Qd7 12.0-0 b5 13.Re1 c6 14.g3=) 9...0-0 10.0-0 Qe7 11.c4 b6 12.c5 Bf4 13.Re1 Ra7 14.g3=; D2) 8...0-0 9.Nb3 (9.Bc3 Nc6 10.Nb3 e5 11.de5 Be5 12.Be5 Ne5 13.Bb5 c6 14.Be2=; 9.Bd3 Ra5 10.c4 Bf4 11.c5 Qd7 12.0-0 b5 13.Bc1 Ra4 14.g3=+) 9...Nc6 10.a6 b6 11.Bd3 Nb8 12.Qe2 c5 13.c4 Na6 14.0-0=.

7.Nd2 c6 A) 8.Bd3 A1) 8...0-0 9.Nb3 (9.0-0 Qc7 10.h3 a5 11.c3 b5 12.Re1 Nbd7 13.Qc2 Rfe8 14.a4=+; 9.c4 Nbd7 10.c5 Bf4 11.0-0 a5 12.g3 Bh6 13.f4 ab4 14.ab4=; 9.Bc3 Qc7 10.h3 Nbd7 11.0-0 Nh5 12.Re1 Nf4 13.Bf1 Nb6 14.a4=+) 9...Qc7 10.h3 Nh5 11.g3 Nf6 12.0-0 Nbd7 13.Re1 Rfe8 14.f4=; A2) 8...Qc7 9.c4 (9.h3 a5 10.ba5 Qa5 11.0-0 b5 12.Re1 0-0 13.Nb3 Qa4 14.Bc3=+; 9.Nb3 0-0 10.h3 Nh5 11.g3 Nf6 12.0-0 Nbd7 13.Re1 Rfe8 14.f4=; 9.Bc3 Nbd7 10.h3 0-0-0 11.0-0 Nh5 12.Re1 Nf4 13.Bf1 Nb6 14.a4=+) 9...Nbd7 10.c5 Bf4 11.g3 Bh6 12.0-0 0-0 13.Re1 g6 14.Qe2=; A3) 8...a5 9.Bc3 (9.b5 0-0 10.c4 dc4 11.Nc4 cb5 12.Nd6 Qd6 13.Bb5 Rd8 14.Rc1=+; 9.c3 0-0 10.0-0 Qc7 11.h3 Nbd7 12.Re1 b5 13.Qc2 Rfe8 14.a4=+) 9...ab4 10.ab4 Ra1 11.Qa1 Qe7 12.Qa5 b5 13.0-0 Bc7 14.Qa3=+; B) 8.Nb3 B1) 8...Qc7 9.Bd3 (9.h3 Nh5 10.g3 Nf6 11.Bd3 0-0 12.0-0 Re8 13.Re1 Nbd7 14.f4=; 9.g3 Nbd7 10.Bd3 0-0-0 11.Rc1 h5 12.Qe2 h4 13.f4 Nb6 14.Rb1=+; 9.Bc1 Nbd7 10.Bd3 0-0 11.h3 b6 12.0-0 c5 13.bc5 bc5 14.dc5=+) 9...Nbd7 10.h3 Nb6 11.0-0 0-0-0 12.Nc5 h6 13.Re1 g6 14.Rb1=; B2) 8...Nbd7 9.h3 (9.Bd3 Qc7 10.h3 Nb6 11.0-0 0-0 12.Qe2 Rfe8 13.Rae1 Na4 14.Ba1=) 9...0-0 10.Bd3 Nh5 11.g3 e5 12.0-0 Re8 13.Re1 Nhf6 14.de5=; B3) 8...Qb6 9.Bd3 Qc7 10.g3 0-0 11.0-0 Nbd7 12.Re1 Rae8 13.f4 b5 14.Qf3=; B4) 8...0-0 9.h3 (9.Bd3 Qc7 10.h3 Re8 11.0-0 Nbd7 12.Re1 Rad8 13.Nc5 e5 14.Qd2=+) 9...Nbd7 10.Bd3 Nh5 11.g3 Re8 12.0-0 e5 13.Re1 Nhf6 14.de5=; C) 8.c4 C1) 8...0-0 9.Bd3 (9.c5 Bf4 10.Bd3 a5 11.g3 Bh6 12.ba5 Qa5 13.f4 Nbd7 14.0-0=; 9.Qc2 Nbd7 10.Bd3 Bf4 11.c5 Re8 12.0-0 b5 13.a4 ba4 14.Ra4=) 9...Bf4 10.c5 Nbd7 11.0-0 Bc7 12.Re1 Re8 13.Qc2 Bf4 14.g3=; C2) 8...Nbd7 9.Bd3 (9.c5 Bf4 10.g3 Bh6 11.Bd3 Qc7 12.f4 0-0 13.0-0 g6 14.Re1=; 9.Qc2 0-0 10.Bd3 Qc7 11.c5 Bf4 12.g3 Bd2 13.Qd2 Rae8 14.0-0=; 9.b5 0-0 10.bc6 bc6 11.Bd3 Rb8 12.Rb1 c5 13.Qc2 cd4 14.Bd4=+) 9...0-0 10.c5 Bf4 11.g3 Bc7 12.0-0 Qe7 13.Re1 Rfe8 14.f4=; C3) 8...Bf4 9.c5 (9.Bd3 dc4 10.Nc4 0-0 11.Qc2 Qd5 12.Be4 Qg5 13.g3 Bc7 14.0-0=; 9.g3 Bd2 10.Qd2 dc4 11.Bc4 0-0 12.0-0 Nd5 13.Bd3 Nd7 14.Qc2=+; 9.Bc1 0-0 10.Nb3 e5 11.Be2 dc4 12.Bc4 b5 13.Be2 Re8 14.de5=+) 9...b5 10.a4 ba4 11.Ra4 0-0 12.Bd3 Nbd7 13.0-0 a5 14.g3=.

7.Nd2 Nbd7 A) 8.Be2 A1) 8...Nh5 9.g3 (9.c4 Nf4 10.Bf1 dc4 11.Nc4 0-0 12.Nd6 cd6 13.Bc1 Nd5 14.Bd3=+) 9...0-0 10.Bd3 a5 11.b5 Re8 12.c4 dc4 13.Be4 c3 14.Bc3=; A2) 8...c6 9.c4 (9.Bd3 Qc7 10.c4 Bf4 11.g3 Bd2 12.Qd2 dc4 13.Bc4 Qd6 14.0-0=+; 9.0-0 a5 10.Bc3 Qc7 11.h3 ab4 12.ab4 0-0 13.Qb1 b6 14.Re1–/+; 9.Nb3 Qc7 10.h3 Nb6 11.Bc1 h6 12.0-0 0-0-0 13.Re1 Rhe8 14.Rb1=+) 9...0-0 10.c5 Bb8 11.Bd3 Re8 12.0-0 a5 13.Re1 b5 14.Qe2=; A3) 8...0-0 9.0-0 c6 10.Re1 Qc7 11.h3 a5 12.b5 cb5 13.Bb5 Bh2 14.Kh1=+; B) 8.Bd3 B1) 8...c6 9.c4 (9.0-0 a5 10.Bc3 Qc7 11.h3 ab4 12.ab4 0-0 13.Qe2 e5 14.Nb3=+; 9.Nb3 0-0 10.0-0 Qc7 11.h3 Nb6 12.Qe2 Rfe8 13.Rae1 Nbd7 14.Qd2=+; 9.Bc3 Qc7 10.Qe2 0-0 11.Nf1 Rfe8 12.Ne3 e5 13.Rb1 b5 14.Bf5–/+) 9...0-0 10.c5 Bf4 11.g3 Bb8 12.0-0 a6 13.Re1 Re8 14.f4=; B2) 8...0-0 9.Nb3 (9.0-0 a5 10.ba5 c5 11.dc5 Nc5 12.Nb3 Nd3 13.cd3 Nd7 14.Re1=) 9...Nh5 10.g3 Nhf6 11.0-0 b6 12.Re1 a5 13.ba5 ba5 14.a4=; B3) 8...Nh5 9.g3 0-0 10.Nb3 Nhf6 11.0-0 b6 12.Re1 a5 13.b5 a4 14.Nd2=; B4) 8...a5 9.b5 (9.Bc3 Nh5 10.g3 ab4 11.Bb4 Qe7 12.0-0 0-0 13.Bd6 Qd6 14.c4=+) 9...0-0 10.c4 dc4 11.Nc4 Nd5 12.Nd6 cd6 13.0-0 Nf4 14.Bc1=+.

7.Bd3 Nbd7 8.0-0 c6 9.Re1 0-0 10.c3 Qc7 11.g3 Rfe8 12.Nd2 e5 13.Qc2 b5 14.a4 ba4 15.Qa4 Nb6 16.Qa5 ed4 17.cd4 Re1 18.Re1 Rb8 19.Bc3 Qb7 20.Ra1 Nbd7 21.Rb1 h6 22.Nf1 Bc7 23.Qa2 Bd6 24.Ne3 Bf8 25.b5 c5 26.dc5 Bc5 27.Nf5 Rc8 28.Kg2 Re8 29.Rc1 Qc7 30.Bd4 Qb6 31.Rc5 Nc5 32.Qa3 Nfd7 33.Ng7 Re1 34.Nf5 Rd1 35.Bc5 Qc5 36.Qb2 Qf8 37.Qe2 Rd3 38.Qd3 Nb6 39.Qd4 Kh7 40.Qa1 Nc8 41.Qa6 1–0. mafergut (2130) – michaelbuss, ChessWorld.net, 2003.

7.0-0 Nc6 =.

7.b5 Nbd7 8.Nc3 +=.

8.0-0 0-0 9.Qc1 A) 9...a6 10.Re1 (10.ba6 Na6 11.Re1 d4 12.c3 d3 13.Bd3 Bh2 14.Kh2 Qd3 15.c4) 10...d4 11.a4 Nd5 12.c3 Nf4 13.Bf1 Qg5 14.g3 d3 15.c4; B) 9...d4 10.Re1 (10.Qd1 Qc7 11.h3 a6 12.Re1 Bh2 13.Kh1 Be5 14.Bc4 Nbd7 15.Qe2) 10...a6 11.a4 Nd5 12.c3 Nf4 13.Bf1 ab5 14.ab5 Ra1 15.Ba1; C) 9...Nh5 10.g3 Qg5 11.Re1 Nd7 12.Kh1 c4 13.d3 Qc1 14.Rc1 cd3 15.cd3.

8.0-0 0-0 9.c4 Nbd7 (9...d4 10.Bd3–/+ (10.Re1 a6 11.a4 Qc7 12.h3 ab5 13.cb5 Nbd7 14.Qc2 Qa5 15.Bd3) 10...a6 11.Re1 ab5 12.cb5 Nbd7 13.Qe2 Ra5 14.Bc2 Qc7 15.g3; 9...dc4 10.Bc4 Nbd7 11.Re1 Qc7 12.g3 Be5 13.Nc3 Nb6 14.Bf1 Rad8 15.Qc2) 10.cd5 (10.Re1 d4 11.Qc2 a6 12.ba6 ba6 13.h3 Rb8 14.d3 Qc7 15.Nd2) 10...ed5 (10...Nd5 11.Re1 Nf4 12.g3 Ne2 13.Qe2 a6 14.Nc3 Be5 15.ba6) 11.d4 (11.Re1 Re8–/+ 12.Ra2 Qc7 13.h3 Re7 14.Bd3 Ne5 15.Bf5) 11...c4 12.Nc3 Nb6 (12...Re8 13.Re1–/+ Re6 14.Bc1 Qa5 15.Bd2; 12...Qc7 13.g3 a6 14.Re1 Qb6 15.a4) 13.a4 (13.Re1 Re8 14.Qc2 Qc7 15.h3) 13...Bc7 (13...a5 14.Re1–/+ Re8 15.Bc1) 14.Qc2 (14.a5 Nbd7 15.Qa4) 14...Qd6 (14...a5 15.ba6=+ (15.Rfe1=+); 14...Re8 15.a5) 15.g3 Qe6 (15...Qd8 16.a5 Nbd7 17.a6=+) 16.Rfe1 (16.a5 Nc8=) 16...Rfe8 (16...Qh3 17.a5 Nbd7 18.f4=) 17.Bc4 Qe1 18.Re1 Re1 19.Bf1 Nc4 (better 19...Rae8!?=) 20.Nd5!+- Nd5 21.Qc4 Rd8 22.Kg2 Re6 (22...Re7 23.Bd3 Bb6 24.Be4+-) 23.Bd3 Bb6 24.Be4 Red6 25.Ba3 R6d7 26.Bc5 Bc5 (26...Nf6 27.Qc3+-) 27.dc5 Nf6 (27...Ne7 28.Qc2+-) 28.Qb4 a6? (28...Ne4 29.fe4 Rc8+-) 29.ba6 ba6 30.Qb6 (30.c6 Rc7 31.Qa5 Ne8+-) 30...Ne4 31.c6 (31.c6 Rd6 32.c7+- (32.fe4?! Rc8+-)) 1–0. Mehlhorn,Uwe (2440) – Weisse,Mark, remoteschach.de, 2003.

8.0-0 0-0 9.Re1 A) 9...a6 10.ba6 (10.Nc3 c4 11.ba6 Ra6 12.Nb5 Bc5 13.d4 Ra5 14.a4 Bb4 15.c3) 10...Na6 11.Nc3 Nc7 12.Nb5 Nb5 13.Bb5 d4 14.c3 Qc7 15.h3; B) 9...Re8 10.a4 (10.h3 a6 11.ba6 Na6 12.Nc3 c4 13.Rb1 Nc7 14.a4 Bc5 15.Ba1) 10...d4 11.g3 a6 12.c3 ab5 13.Bb5 Nc6 14.f4 Qb6 15.Na3; C) 9...Nbd7=+ 10.Nc3 (10.a4 a6 11.Nc3 c4 12.Rb1 Qc7 13.h3 Bh2 14.Kh1 Be5 15.Bf1) 10...Be5 11.Rb1 c4 12.Bf1 Qc7 13.g3 Qd6 14.f4 Bd4 15.Bg2.

8.0-0 0-0 9.Kh1 A) 9...Nbd7 10.a4 (10.Re1 Qb6 11.c4 d4 12.a4 Qa5 13.Bd3 Ne5 14.Be2 Rad8 15.f4) 10...Re8 11.a5 Qc7 12.h3 c4 13.d3 Be5 14.Be5 Qe5 15.Ra2; B) 9...d4 10.Re1 Nbd7 11.c3 Nd5 12.Qc2 Qf6 13.Kg1 Rac8 14.g3 Rfd8 15.c4; C) 9...a6 10.Re1 (10.ba6 Na6 11.Re1 d4 12.c3 Bc7 13.Bb5 Qd6 14.g3 Ba5 15.Bc4) 10...Nbd7 11.ba6 ba6 12.Nc3 c4 13.Rb1 Qc7 14.Na2 Rfb8 15.d3.

8.0-0 0-0 9.h3 A) 9...Re8 10.Re1 (10.Nc3 Qa5 11.Qe1 e5 12.d3 Bc7 13.Rb1 Qb6 14.Qd2 a6 15.ba6) 10...a6 11.ba6 Na6 12.Nc3 c4 13.Rb1 Nc7 14.a4 Bc5 15.Ba1; B) 9...Nbd7 10.Nc3 (10.Re1 Qb6 11.a4 c4 12.d3 Bg3 13.Rf1 cd3 14.Bd3 Be5 15.a5) 10...Nh5 11.Re1 Qh4 12.Bf1 Be5 13.Na4 Bb2 14.Nb2 Nf4 15.Rb1; C) 9...a6 10.Re1 (10.a4 ab5 11.ab5 Ra1 12.Ba1 Nh5 13.g3 Qg5 14.h4 Qg6 15.Bd3) 10...c4 11.a4 Bc5 12.Nc3 Nbd7 13.Bf1 Qb6 14.Qe2 Nh5 15.Reb1.

8.0-0 a6 A) 9.Re1 A1) 9...Nbd7 10.Nc3 (10.ba6 ba6 11.g3 0-0 12.Qc1 e5 13.Nc3 c4 14.Rb1 Rb8 15.g4) 10...0-0 11.Rb1 Qc7 12.g3 c4 13.ba6 ba6 14.f4 Rab8 15.Bf3; A2) 9...Qc7 10.g3 (10.Bf6 gf6 11.g3 c4 12.ba6 Na6 13.d3 b5 14.f4 0-0 15.Bf1) 10...Nbd7 11.Nc3 0-0 12.a4 c4 13.f4 d4 14.Nb1 ab5 15.ab5; A3) 9...0-0 10.ba6 (10.a4 Nbd7 11.Nc3 c4 12.Rb1 Qc7 13.h3 Bh2 14.Kh1 Be5 15.Bf1) 10...Na6 11.Nc3 d4 12.Ne4 Nc7 13.Rb1 Ra5 14.c3 Ne4 15.fe4; B) 9.a4 B1) 9...Nbd7 10.Re1 (10.h3 ab5 11.Bb5 0-0 12.Re1 Qa5 13.Nc3 Rfd8 14.Rb1 Nb6 15.Ba1) 10...0-0 11.Nc3 c4 12.Rb1 Qc7 13.h3 Be5 14.ba6 Ra6 15.Nb5; B2) 9...Qc7 10.h3 (10.g3 Nbd7 11.Nc3 0-0 12.a5 ab5 13.Nb5 Qc6 14.d4 Be7 15.c4) 10...ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.Re1 0-0 14.Nc3 Ra8 15.Bb2; B3) 9...0-0 10.Re1 (10.h3 ab5 11.ab5 Ra1 12.Ba1 Nh5 13.Re1 Nf4 14.Bf1 Qh4 15.Qc1) 10...Nbd7 11.h3 Qa5 12.Bc3 Qc7 13.Bb2 c4 14.Nc3 Bc5 15.a5; C) 9.Nc3 C1) 9...Qc7 10.h3 (10.g3 0-0 11.Re1 Nbd7 12.a4 c4 13.Bf1 e5 14.ba6 ba6 15.Bg2) 10...0-0 11.Re1 c4 12.a4 Nbd7 13.a5 Bb4 14.b6 Qc5 15.Ra4; C2) 9...Nbd7 10.ba6 (10.h3 0-0 11.a4 Qa5 12.Re1 Qb4 13.g3 Rfd8 14.Ra2 d4 15.a5) 10...ba6 11.Rb1 Qc7 12.g3 0-0 13.Re1 Rfb8 14.f4 Ra7 15.Ba1; C3) 9...0-0 10.Re1 (10.ba6 ba6 11.Rb1 Nc6 12.h3 c4 13.Re1 Rb8 14.Bf1 Qa5 15.Qc1) 10...c4 11.ba6 Ra6 12.Nb5 Bc5 13.d4 Ra5 14.a4 Bb4 15.c3; D) 9.ba6 ba6 10.h3 (10.Re1 Nc6 11.h3 0-0 12.Nc3 c4 13.d3 Rb8 14.Bc1 Be5 15.Bd2) 10...0-0 11.Nc3 c4 12.d3 d4 13.Ne4 c3 14.Bc1 Nd5 15.Re1.

8.0-0 Qc7 A) 9.g3 A1) 9...Be5 10.Nc3 (10.c3 0-0 11.d4 Bd6 12.dc5 Bc5 13.c4 Nbd7 14.cd5 Nd5 15.Nc3) 10...Nbd7 11.Re1 0-0 12.f4 Bd4 13.Ra2 a6 14.a4 Bc3 15.Bc3; A2) 9...Nbd7 10.Re1 (10.Nc3 0-0 11.Re1 c4 12.f4 a6 13.Bf3 Qb6 14.a4 ab5 15.Nb5) 10...0-0 11.Nc3 Rfe8 12.a4 Rad8 13.a5 Be5 14.f4 Bd4 15.b6; B) 9.Kh1 B1) 9...c4 10.d3 (10.Bf6 gf6 11.d3 Bh2 12.dc4 Be5 13.c3 dc4 14.Nd2 h5 15.Qa4) 10...Nbd7 11.dc4 dc4 12.Bd4 0-0 13.Nd2 Ne5 14.f4 Ned7 15.g3; B2) 9...Be5 10.Be5 (10.Nc3 c4 11.g3 Nbd7 12.f4 Bc3 13.Bc3 Qb6 14.f5 ef5 15.Rb1) 10...Qe5 11.Nc3 0-0 12.Re1 Qf4 13.Kg1 e5 14.a4 Nbd7 15.a5; B3) 9...Nbd7 10.h3 (10.Re1 0-0 11.Nc3 c4 12.a4 Rfe8 13.d3 d4 14.Ne4 c3 15.Nd6) 10...0-0 11.Re1 c4 12.d3 Bc5 13.d4 Bd6 14.Nc3 a6 15.a4; C) 9.h3 C1) 9...Bh2 10.Kh1 Be5 11.Nc3 0-0 12.Re1 c4 13.a4 Nbd7 14.a5 Qc5 15.Kg1; C2) 9...Be5 10.Be5 (10.Nc3 0-0 11.Rb1 Nbd7 12.Re1 c4 13.g3 Rfd8 14.f4 Bc3 15.Bc3) 10...Qe5 11.Nc3 0-0 12.a4 Qg5 13.Re1 e5 14.a5 Nbd7 15.Ra4; C3) 9...Nbd7 10.Re1 (10.Nc3 0-0 11.Re1 Be5 12.a4 Qa5 13.g3 Bd4 14.Ra2 Qc7 15.f4) 10...0-0 11.a4 c4 12.a5 Bh2 13.Kh1 Be5 14.Be5 Qe5 15.c3.

8.0-0 d4 A) 9.Re1 A1) 9...Bc7 10.g3 (10.a4 0-0 11.g3 a6 12.f4 ab5 13.ab5 Ra1 14.Ba1 Qd6 15.Na3) 10...0-0 11.f4 a6 12.a4 ab5 13.ab5 Ra1 14.Ba1 Qd6 15.Na3; A2) 9...Qc7 10.g3 (10.h3 0-0 11.c3 Bh2 12.Kh1 Be5 13.Qc2 Rd8 14.f4 d3 15.Bd3) 10...a6 11.ba6 ba6 12.c3 Nc6 13.Qa4 0-0 14.Ra2 Rfb8 15.f4; A3) 9...0-0 10.h3 (10.a4 Nd5 11.Bd3 Qc7 12.g3 a6 13.Na3 Nd7 14.Nc4 ab5 15.ab5) 10...a6 11.c3 ab5 12.Bb5 Qb6 13.a4 Nc6 14.Na3 Qc7 15.Nc4; B) 9.h3 Nd5 10.g3 (10.Re1 Qg5 11.Bf1 0-0 12.g3 a6 13.c4 Nf4 14.Qb3 Nd7 15.h4) 10...Qg5 11.Re1 Bg3 12.fg3 Qg3 13.Kh1 Qh3 14.Kg1 h5 15.Bf1; C) 9.Bc4 C1) 9...0-0 10.c3 (10.Qe2 Nbd7 11.c3 Qc7 12.h3 Ne5 13.cd4 cd4 14.Rc1 Rfc8 15.d3) 10...Nbd7 11.Qe2 Qc7 12.h3 Ne5 13.cd4 cd4 14.Rc1 Rfc8 15.d3; C2) 9...Qc7 10.h3 (10.g3 Nbd7 11.Qe2 0-0 12.c3 e5 13.f4 ef4 14.cd4 Rfe8 15.Qd3) 10...Nbd7 11.Re1 0-0 12.Be2 a6 13.a4 ab5 14.Bb5 Rfd8 15.c3; C3) 9...Nbd7 10.c3 (10.Qe2 Nb6 11.c3 0-0 12.cd4 cd4 13.Bb3 Rc8 14.Re1 Nfd7 15.d3) 10...Ne5 11.Qb3 d3 12.f4 Nc4 13.Qc4 0-0 14.Qd3 Bf4 15.Qf3; D) 9.g3 D1) 9...Qb6 10.c3 (10.a4 Nc6 11.bc6 Qb2 12.Bb5 Qa1 13.cb7 Ke7 14.ba8R Ra8 15.f4) 10...0-0 11.a4 Nc6 12.Qc2 Na5 13.cd4 cd4 14.Qd3 Bc5 15.Na3; D2) 9...a6 10.c3 (10.ba6 Na6 11.Bb5 Nd7 12.c3 Qb6 13.a4 Nc7 14.Bd7 Kd7 15.Na3) 10...ab5 11.Qb3 Nc6 12.cd4 cd4 13.Bb5 0-0 14.Ba4 Ra6 15.Bc6; D3) 9...0-0 10.c3 (10.Re1 a6 11.ba6 Na6 12.c3 Be7 13.Qb3 d3 14.Bf1 c4 15.Qc4) 10...Qb6 11.a4 Nc6 12.Qc2 Na5 13.cd4 cd4 14.Qd3 Bc5 15.Na3.

8.0-0 Nbd7 A) 9.Nc3 A1) 9...0-0 10.h3 (10.Re1 Qc7 11.h3 c4 12.a4 Bh2 13.Kh1 Be5 14.a5 Qc5 15.Kg1) 10...Be5 11.Ra2 Nh5 12.g3 Qg5 13.h4 Qg6 14.Bd3 f5 15.Qe1; A2) 9...Qc7 10.g3 (10.h3 0-0 11.Re1 Bh2 12.Kh1 Be5 13.a4 Qa5 14.Kg1 d4 15.Nb1) 10...h5 11.Re1 h4 12.Bf1 0-0-0 13.Qe2 Nb6 14.f4 Rh6 15.Bg2; A3) 9...Be5 10.Na4 (10.g3 0-0 11.Re1 Qa5 12.Rb1 Bd4 13.g4 h6 14.Bf1 Rfe8 15.f4) 10...Bb2 11.Nb2 c4 12.d4 Qa5 13.a4 Qc3 14.Rb1 a6 15.b6; B) 9.Re1 B1) 9...Qc7 10.g3 (10.h3 0-0 11.c4 d4 12.Bd3 a6 13.Qc2 ab5 14.cb5 Ra5 15.Kh1) 10...0-0 11.a4 a6 12.Nc3 c4 13.ba6 ba6 14.Qc1 Rab8 15.f4; B2) 9...a6 10.Nc3 (10.ba6 ba6 11.h3 Qb6 12.Bc1 Be5 13.c3 0-0 14.d3 Rfb8 15.f4) 10...0-0 11.ba6 ba6 12.Rb1 Qc7 13.h3 Rfb8 14.Qc1 c4 15.g3; B3) 9...0-0 10.Nc3 (10.a4 a6 11.Nc3 Be5 12.Rb1 Qa5 13.Ra1 d4 14.Na2 Nb6 15.Nc1) 10...Be5 11.Rb1 Nb6 12.g3 Qd6 13.f4 Bd4 14.Bf1 Rad8 15.Qf3; C) 9.Ra2 C1) 9...0-0 10.Re1 (10.h3 Nh5 11.Re1 Nf4 12.Bf1 Qg5 13.g3 d4 14.Kh2 Rad8 15.c3) 10...Qc7 11.h3 a6 12.Nc3 c4 13.Ra1 Bh2 14.Kh1 Be5 15.ba6; C2) 9...a6 10.ba6 ba6 11.h3 Qc7 12.c4 d4 13.Bd3 0-0 14.Be4 Rab8 15.Qc2; C3) 9...Qc7 10.g3 (10.h3 0-0 11.Re1 a6 12.Nc3 c4 13.Bf1 Qb6 14.ba6 Ra6 15.Nb1) 10...0-0 11.Re1 a6 12.ba6 ba6 13.f4 Rab8 14.f5 ef5 15.Bd3; D) 9.h3 D1) 9...Qc7 10.Re1 (10.a4 Bh2 11.Kh1 Be5 12.Be5 Qe5 13.Nc3 0-0 14.Re1 Qg5 15.a5) 10...0-0 11.a4 c4 12.d3 cd3 13.Bd3 Bh2 14.Kh1 Be5 15.Be5; D2) 9...Qa5 10.Re1 (10.Ra2 0-0 11.Re1 Rfd8 12.a4 Be5 13.Be5 Ne5 14.Qc1 c4 15.Qb2) 10...0-0 11.Ra2 Be5 12.Be5 Ne5 13.f4 Ng6 14.g3 a6 15.ba6; D3) 9...0-0 10.Nc3 (10.Ra2 a6 11.Re1 Qc7 12.Nc3 c4 13.Ra1 Bh2 14.Kh1 Be5 15.ba6) 10...Qc7 11.Re1 c4 12.a4 Qa5 13.Ra2 Bc5 14.Ra1 a6 15.Bf1.

8.a4 0-0 9.0-0 Nbd7 10.Re1 (10.g3 Qa5+=) 10...Qc7 (10...Qa5 11.Nc3+=) 11.g3 a6 (11...h5 12.a5=) 12.c4= ab5 (12...d4 13.Na3=) 13.cd5 Nd5 (13...ed5 14.Bb5 Be5 15.Nc3=) 14.Bb5 Nb4 15.Na3 (15.Qb3 h5=) 15...Be5 (15...Be7 16.Qb3 Bf6 17.Rac1 Bb2 18.Qb2=) 16.d4 Bf6 17.Nc2 Nc6 (17...Rfd8 18.Nb4 cb4 19.Qb3=) 18.Ra3 (18.Qc1 Rfd8+=) 18...Rfd8 19.Qa1 Qd6 (19...h5 20.Bc3+=) 20.dc5= Qc5 21.Bf6 Nf6 22.Rc3 Qh5 (22...Qd6 23.Bc6 bc6 24.a5=) 23.Kg2 Nd5 24.Rc4 Rd6 (24...Nce7!?=) 25.Qa3+= Rad8 26.Bc6 Rc6 (26...bc6 27.a5+/–) 27.Rc6 bc6 28.Re4 Qg5 29.Rc4 (29.a5 Ra8 30.a6 Qe7 31.Qe7 Ne7+=) 29...h6 (29...e5 30.Qc5 Qg6 A) 31.Qc6?? Nf4 32.Rf4 Qc6–+ (32...ef4?! 33.Qc7 Qd6 34.Qc4–/+); B) 31.Ne1+=) 30.a5 Ra8 31.a6 Qe7 32.Qe7 Ne7 33.Ra4 Nd5 34.Nd4 c5 35.Nb5+/– c4 36.a7 c3 37.Kf1 Kf8 38.Ke2 Ke7 39.Kd3 Kd7 40.Nc3 Nc3 41.Kc3+- Kc6 42.Kd4 f6 43.f4 Kb6 44.Ke4 Kb5 45.Ra2 Kc5?? 46.f5 e5 47.Kf3 h5 48.Kg2 Kd4? 49.Ra4 Kd3 50.Kf3 Kc3 51.Ra6 Kd4 52.Rd6 (52.Rd6 Kc3 53.Rd7+-) 1–0. Steuer – Buss,Michael, email 4AMM–02, 1997.

8.0-0 0-0 9.Nc3 Nc6 10.Bd3 Ne5 (10...Nh5 11.Ne2=+) 11.Bb5 a6 (11...Bd4!?=+) 12.d4= ab5 13.de5 Nd7 (13...Nh5 14.Qd2 Qb6 15.Ne2=) 14.Nb5 Nb6 (14...Qh4 15.Rb1=) 15.Bd4 Be7 (15...Bd4 16.Qd4 Nc4 17.f4=) 16.Bb6+= Qb6 17.Rb1 Qc5 18.Qd2 Ra4 19.Rb2 (19.Rfd1 Qc6=) 19...Rc8 20.Rfb1 h6 (20...Rc4 21.c3+=) 21.c3 (21.f4 Rc4+=) 21...Ra6 22.Rb4 Qc6 23.R4b3 Ra5 (23...Qc4 24.Nd6 Bd6 25.ed6=) 24.Nd4 Qe8 (24...Qc4 25.Rb7 Ba3 26.Qf4+=) 25.Rb7+/– Ra3 26.Nb5 Ra6? (better is 26...Ra4+/–) 27.Nc7+- (27…Rc7 28.Rc7+-) 1–0. Roborvl – phips, Rated Blitz Match, 1996.

8.0-0 0-0 9.c4 Nc6–/+ 10.Nc3 dc4 (10...Rc8 11.Rb1–/+) 11.Bc4+= Ne5 (11...a6 12.a4+=) 12.d3 Nc4 (12...Bd4 13.Qb3+=) 13.dc4 Rc8 14.Qe2 (14.Ne4 Ne4 15.fe4 Qh4+=) 14...Qc7 15.Rad1 (15.Ne4 Ne4 16.fe4 Rfd8+=) 15...Rfd8 (15...Qe7 16.a4+=) 16.Rd8 (16.Ne4 Ne4 17.fe4 Qf4+=) 16...Rd8 17.Rd1 Rd1 18.Qd1 Qd7 19.Qc2 (19.Qd7 Nd7 20.h3 Nb6–/+) 19...Qd8 (19...Bd4 20.h3+=) 20.h3 b6 21.Bc1 Qd4 (21...Qd6 22.Nb5 Qb8 23.Be3+=) 22.Nb5 Qa1 (22...Qe5 23.Qd2 Qb8 24.Qf4+=) 23.Qb2 Qb2 24.Bb2 a6 (24...Ne8 25.Na7 Nd6 26.Nb5 Nc4 27.Bc1+=) 25.Nc7= a5 26.Bf6 gf6 27.Nb5 f5 28.f4 Kf8 29.Kf1 Ke7 30.Ke2 h6 31.a4 f6 (31...h5 32.g3=) 32.f3 e5 33.Nc3 Ke6 34.fe5 fe5 35.g3 h5 36.g4 hg4 37.fg4 e4 38.gf5 ½–½. Pleschke,Helmut (1655) – Krueger,Hilmar (2310), internet, 1999.

8.0-0 0-0 9.d3 Nc6 10.Nd2 Rc8 11.f4 Nd4 12.Nb3 Nb3 13.cb3 Nd7 (13...Qb6 14.d4 Bd6 15.g3=) 14.Bf3= g6 15.Rc1 Qb6 16.d4 Bd6 17.g3 Rc1 18.Bc1 Rc8 19.Re1 Qc7 20.Bb2 Qc2 21.Qc2 Rc2 22.Re2 Rc6 23.Rd2 Ra6 24.Rc2 Kf8 25.Bd1 Ke7 26.Kf1 Kd8 27.a4 Nb8 28.Ke2 Rb6 29.Rc1 Nc6 30.Bc3 Ba3 31.Rb1 Bb4 32.Ba1 Ne7 33.Kd3 Rc6 34.Bb2 Nf5 35.Rc1 Rc1 36.Bc1 h5 37.Bb2 Kd7 38.Ke2 a6 39.Bc2 Ba5 40.Kd3 Be1 41.Ke2 ½-½. Vojtek,V (2310) - Bus,Konrad (2220), 29th Cracovia Open A, 2018.

8.0-0 0-0 9.Kh1 Nbd7 (9...Nc6 10.Nc3+=) 10.Nc3 (10.d4 Be7=) 10...a6 11.Rb1 b5 12.g4 (12.a4 d4 13.Ne4 Ne4 14.fe4 ba4+=) 12...Qb6 (12...Bd6!?–/+) 13.Na4 ba4 14.Bf6 Qd6 15.Bh4 Ba3 16.Bg3 Qc6 17.c4 dc4 18.Ra1 Bb4 19.Ra4 (19.Qa4 Qb7+=) 19...a5–/+ 20.Qc2 (20.Ra2 Nb6–/+) 20...Nb6 (20...Nc5 21.Rb4 ab4 22.Qc4–/+) 21.Ra2 Rfd8 22.Rd1 (22.Bf4 Nd5 23.Qe4 f5 24.gf5 ef5–/+) 22...Rac8 (22...Rd4 23.d3 c3 24.Kg1–+) 23.h4 Rd4 24.Kh2 (better is 24.Kg1–/+) 24...Rcd8–+ 25.Qc1 Qd7 (25...Qd5!? 26.Qa1–+) 26.Be5 Bd6 27.Bg3 Bb4 Twofold repetition 28.Be5 Bd2 Black has a new passed pawn: c4. (better is 28...Rd5 29.Bf4 Bd6–/+) 29.Qa1?? (29.Qb1 Rd6 30.Rad2 Rd2 31.Rd2 Qd2 32.Qb6 Qd5=) 29...Bf4?? ruins a clearly superior position (better is 29...Rd5–+ secures the win) 30.Bf4= Rd1 31.Bd1 Qd1 32.Ra5?? ignoring the path to victory. 32...Qf3–+ 33.Be3 Rd1 34.Bb6 Qh1 35.Kg3 Ra1 36.Rc5 Rg1 37.Kf4–+ Qh2 38.Ke3 Re1 39.Kf3 Qh1 40.Kg3 h6 (40...h6 41.Rb5 Rg1 42.Kf4 Qh4–+) 0–1. Martinez Rodriguez,E – Alvarez Fernandez,E (2170), Asturias–chT Preferente, 2001.

8.0-0 Nc6 9.d4 (9.Nc3 0-0+=) 9...Bb6 10.c3 0-0 11.Nd2 Rc8 12.f4 Na5 13.Rc1 Ne8 14.c4 dc4 15.Nc4 Nc4 16.Bc4 Nf6 17.Qf3 Qd7 18.Rfd1 Nd5 19.f5 Rcd8 20.fe6 fe6 21.Qe4 Rf4 22.Qe5 Bc7 23.Qe2 Rdf8 24.g3 (better is 24.Rf1!?+=) 24...Rf2–/+ 25.Qf2 Rf2 26.Kf2 Bd8 27.Re1 Bg5 28.Rc2 Qf7 29.Kg1 Be3 30.Kh1 Qf3 31.Rg2 h6 32.Ba2 h5 33.h4 b5 34.Kh2 a5 35.Kh1 Kf7 36.a4? (36.Bb3 g6–/+) 36...Nf6?? (better is 36...Nb4 37.Bb1 ba4–+) 37.ab5–/+ Ne4 38.Kh2 Ng3 39.Be6 0–1. Frauchiger,Thomas (1820) – Korneev,O (2565), 32nd Geneva Open, 2015.

8.Nc3 Nc6 9.0-0 0-0 10.Bd3 a6 11.f4 Re8 12.Rb1 b5 13.a4 b4 14.Na2 Bd6 15.Qf3 Nd7 16.c4 Ne7 17.Qg3 g6 18.Be5 Be5 19.fe5 dc4 20.Bc4 Nb6 21.Bd3 a5 22.Nc1 Nf5 23.Qh3 Nd4 24.Nb3 Nb3 25.Rb3 Qd4 26.Bb5 Rec8 27.Qe3 Qe3 28.de3 Rc2 29.g3 Ra2 0–1. Benassi,Aspasio – Quirini,Luciano, Asigc, 2002.

6.a4 Be7 7.c4 0-0 8.Be2 a6 9.0-0 ab5 10.ab5 Ra1 11.Ba1 c6 12.d4 dc4 13.Bc4 cb5 14.Bb5 Nc6 15.Nd2 Nd4 16.Ne4?? (better 16.Bd3-/+) 16...Nb5-+ 17.Qb3 (17.Qb1 Ne4 18.fe4 Qb6-+) 17...Nd4 (17...Qd5!? 18.Qc2-+) 18.Qb7 Ne4 19.fe4 e5 (19...Bc5 20.Qa6-+) 20.Kh1 Bc5 21.Qb1 Kh8 22.Rd1 f5 23.ef5 Qf6 24.g4 (24.Rc1 Bd6-+) 24...Qg5 (24...Qc6 25.Qe4 Qe4 26.Kg1 Ne2 27.Kf1 Nf4 28.Be5 Qh1) 25.Qe4 h5 (25...Rd8 26.Qe5 Qg4 27.Rd3-+) 26.f3? (better 26.Qe5 Qg4 27.Rd4 Bd4 28.Qd4 Qd4 29.Bd4 Rf5 30.Kg2-+) 26...hg4 27.fg4 Rb8?? (27...Qh4 28.Rc1 Nf5 29.Be5-+) 28.Bc3? (28.Qe5 Rd8 29.Rd4 Bd4 30.Bd4 Qg4 31.Bc3-+) 28...Rb3-+ 29.Bd2 Qh4 30.Qe5 Qf2 (30...Qg4 31.Rf1 Ne2 32.Qe8 Kh7 33.Qg6 Qg6 34.fg6 Kg6 35.Re1-+) 31.Qe8? (31.Qe4 Rb2 32.Qe8 Kh7 33.Qg6 Kg8 34.Qe8 Bf8-+) 31...Kh7 (better 31...Bf8! 32.Qa8 Rd3-+) 32.Qh5 Kg8 33.Qe8 Bf8 34.Qe5 (34.Qe4 Nf3 35.Qc4 Kh8-+) 34...Nf3 (34...Qf3 35.Kg1 Qd1 36.Qe1 Nf3 37.Kg2 Ne1 38.Be1 Qf3 39.Kg1 Bc5 40.Bf2 Rb1) 35.Qg3-+ Qg3 (35...Qe2 36.Ra1 Rb2 37.Bf4 Qe4 38.Bb8 Ne1 39.Kg1 Bc5 40.Qe3 Qg2) 36.hg3 (36.hg3 Rd3 37.g5-+). BeepBeepImAJeep (2700) - synapsid (2300), lichess.org, 2019.

6.a4 g6 7.Be2 Bg7 8.0-0 0-0 9.d4 Nbd7 10.Nd2 c5 11.dc5 Nc5 12.Bd4 Rc8 13.c4 (13.Re1 Qc7=+) 13...Qd6 14.cd5 Ng4 15.fg4 Bd4 16.Rc1 Qd5 17.Bf3 Qg5 18.a5 Rfd8 19.Qe2 Bg7 20.Rc2 Bh6 (20...b6 21.Rfc1=) 21.Rd1 b6 22.ab6 ab6 23.g3 Qe7 24.h4 Na4 25.Bc6 Bg7 26.Ne4 Rd1 27.Qd1 Rd8 28.Qf3 f5 (28...Qb4 29.Kh2=) 29.gf5 gf5 30.Ng5 h6 31.Nh3 Nc5 32.Re2 (32.Nf4 Qd6=) 32...Rd1 (32...Qd6 33.Kh2=) 33.Kg2 Qd6 34.Nf4 Attacking the backward pawn on e6 34...Rc1 35.Qh5 Qd1 36.Qe8 Kh7 37.Kh2 Qg1 38.Kh3 e5?? (better 38...Ne4 39.Be4 fe4+-) 39.Qg6 Kh8 40.Qf5 e4 41.Be4 (41.Ng6 Kh7 42.Ne7 Kh8 43.Qc8 Bf8 44.Qf8 Kh7 45.Qg8) 41...Ne4+- 42.Qe4 (worse 42.Re4 Qf1 43.Kg4 Qd1 44.f3 Qd8+-) 42...Qh1 43.Qh1 Rh1 44.Kg2 Rb1 45.Re8 Kh7 46.Ne6 Ba1 47.Nc7 Bd4 48.Re7 Kh8 (48...Kg8 49.Re6+-) 49.Rd7 (49.f4 Bc5 50.Re6 Kh7+-) 49...Bc5 (49...Be5 50.Nd5 Rb5 51.f4+-) 50.Ne6 (better 50.f4!? Rb2 51.Kh3 Bf2+-) 50...Rb5 51.g4 (51.Rb7 Ra5+-) 51...Rb2 52.Nc5 bc5 53.Rc7 Rc2 54.Kg3 c4 55.g5 hg5 56.hg5 c3 57.f4 Rc1 (57...Kg8 58.f5 Rc1 59.g6+-) 58.f5 c2 59.Kg2 Kg8 60.g6 Ra1 61.Rc2 Ra4 62.Kg3 Kg7 63.Rc6 (63.Rc7 Kf6 64.Rf7 Ke5+-) 63...Rb4 (63...Kh6 64.Kf3 Ra7 65.Kf4+-) 64.Re6 (64.Rc7 Kf6 65.Rf7 Ke5+-) 64...Ra4 (64...Kh6 65.Kf3 Rb7 66.Kf4+-) 65.Kf3 (better 65.Re7 Kf6 66.Rf7 Ke5+-) 65...Rb4 (65...Kh6 66.Re7 Kg5 67.g7 Ra3 68.Ke4+-) 66.Re4 (better 66.Re7 Kf6 67.Rf7 Ke5+-) 66...Rb1 67.Kf4 (better 67.Re7!? Kf8 68.Rf7 Kg8+-) 67...Rf1 68.Kg5 Rg1 69.Rg4 Rf1 70.Rg3 Rf2 71.Kg4 (71.Rd3 Rg2 72.Kf4 Kf6 73.Rd6 Ke7 74.Re6 Kf8+-) 71...Rf1 (71...Kf6 72.Rd3 Rg2 73.Kf3+-) 72.Rf3 (72.Re3 Rg1 73.Kf4 Rf1 74.Ke5 Rb1+-) 72...Rg1 73.Rg3 Rf1 74.Rh3 (74.Re3 Rg1 75.Kf4 Rf1 76.Ke5 Rb1+-) 74...Rg1 75.Kf4 Kf6 76.Rh7 (better 76.Rh8 Rf1 77.Ke4 Re1 78.Kd3 Rd1 79.Ke3 Re1 80.Kd2+-) 76...Rf1= 77.Ke4 Re1 78.Kf4 Rf1 79.Kg4 Rg1 80.Kf3 Kf5 81.g7 Kf6 82.Rh1 Rg7 83.Rf1 Kf7 84.Ke2 Kg8 85.Rf3 Rf7 86.Rf7 Kf7 ½-½. Timmermans,Mark (2385) - Ozen,Bahadir (2365), Titled Tuesday, 2021.

6.Nc3 =.

6.c4 c6 7.cd5 cd5 8.d4 Nbd7 9.Bd3 Bd6 10.Nd2 Rc8 11.Rc1 Rc1 12.Qc1 0-0 13.0-0 Qb8 14.g3 Rc8 15.Qd1 Nb6 16.Qb3 Rc7 17.Rc1 Rc1 18.Bc1 Qc7 19.Bb2 h6 20.a4 Nbd7 21.Kg2 a6 22.ba6 ba6 23.Qc3 Nb8 24.Nb3 Nfd7 25.f4 Qb7 26.Na5 Qb4 27.f5 e5 28.de5 Qc3 29.Bc3 Be5 30.Bb4 Nb6 31.f4 Bc7 32.Bc2 d4 33.Bb3 N6d7 34.Kf3 Ba5 35.Ba5 Nc6 36.Bc7 d3 37.Ke3 Ne7 38.Kd3 Nf5 39.Kc3 Nc5 40.Bc2 Ne3 41.Kd4 Ne6 42.Ke3 Nc7 43.Kd4 Kf8 44.Kc5 Ke7 45.a5 Kd7 46.Bf5 Kd8 47.Kb6 Nd5 48.Kb7 g5 49.fg5 hg5 50.Ka6 Ne7 51.Bc2 Kc7 52.h4 gh4 53.gh4 Ng8 54.Bb3 Nh6 55.Bd5 Ng8 56.Bf7 Nf6 57.h5 Ng4 58.Kb5 1–0. Braak,Jelle van den (1945) – Goodwin,Brian J (2020), NED–SCO, 2012. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.ef3 e6)

6.c4 Nbd7 7.Nc3 Be7 8.d4 0-0 9.Be2 c6 10.0-0 Qc7 11.Qb3 Rac8 12.Rfc1 c5 13.cd5 c4 14.Qc2 ed5 15.a4 Rfe8 16.Bf1 Nf8 17.g3 Bb4 18.Qf5 Rcd8 19.Re1 Re1 20.Re1 Qa5 21.Qc2 Ne6 22.Rd1 Qc7 23.Bh3 Ng5 24.Bg2 Qd7 25.Bc1 Ne6 26.Ne2 Qd6 27.f4 Ba3 28.Be3 Ng4 29.Nc3 Nc7 30.Rb1 Re8 31.Qe2 Nf6 32.Qc2 Bb4 33.f5 Bc3 34.Qc3 Ne4 35.Qc2 Qd7 36.b6 ab6 37.Rb6 Na8 38.Rb1 Qf5 39.Be4 Re4 (worse is 39...de4 40.Qc4 b6 41.Qb5 Qb5 42.Rb5+=) 40.Rb7 Qc8 41.Qb1 Re8 42.Bf4 c3 (42...Qe6 43.Rb8 c3 44.h4+/–) 43.Rb5?? (better is 43.Rb8 Qe6 44.h4+/–) 43...c2+= 44.Qc1 Qc4 45.Be3 Qa4 46.Rd5 Rc8 47.Qb2 h6 48.Rc5 Rc5 49.dc5 Qe4 50.Bf4 g5 51.Be3 Kh7 52.Qf6 Kg8 53.Qd8 Kh7 54.Qf6 ½–½. Khrustalev,Alexander (2000) – Kirjanov,Igor, Moscow op–B, 2008.

6.Be2 Bd6 7.0-0 Nbd7 8.d4 (8.Re1 c5=) 8...Qe7 (8...0-0 9.Re1=+) 9.c4 (9.Re1 0-0=) 9...dc4=+ 10.Nd2 Nb6 (10...c3 11.Bc3 Nd5 12.Qc2=+) 11.Nc4= 0-0 12.g3 (12.Nd6 Qd6 13.Qc1 Rfc8=+) 12...Nc4 13.Bc4 Ba3 (13...Rfd8 14.Rc1=+) 14.Ba3 Qa3 15.Qb3 Qd6 16.Rfd1 Rfd8 17.a4 (17.f4 Nd5=+) 17...Rd7 18.Rd3 Rad8 19.Rad1 c6 20.bc6 bc6 (< 20...Qc6 21.Bb5 Qc8 22.Bd7 Qd7 23.Qb5+/–) 21.Rb1 g6 (21...Nd5 22.a5=+) 22.a5 Qc7 (22...Qe7=) 23.a6 (23.Qc3 Nd5 24.Bd5 Rd5=+) 23...Qa5 (23...Rd4 24.Rd4 Rd4 25.Qb7–/+) 24.Kg2 (24.Qb2 Qf5=+) 24...Nd5 (< 24...Rd4 25.Rd4 Rd4 26.Be6+=) 25.Bd5 Rd5 (< 25...ed5 26.Qa3 Qa3 27.Ra3+=; < 25...cd5 26.Qb5 Qb5 27.Rb5=) 26.Qb7 R5d7 (< 26...Rd4 27.Rd4 Rd4 28.Qa7+=) 27.Qc6 Rd6 (< 27...Rd4 28.Rd4 Rd4 29.Rb8 Kg7 30.Qc8+-) 28.Qb5 (28.Qc1 Ra6 (< 28...Rd4 29.Rd4 Rd4 30.Rb8 Rd8 31.Qf4+/–) 29.Rb7 Kg7=) ½–½. Reefschlaeger,Helmut (2385) – Kaminski,Uwe (2390), BL, 1994.

6.a3 Nbd7 7.d4 c6 8.Bd3 Bd6 9.0-0 Qc7 10.g3 a5 11.Qd2 b5 12.Nd1 h5 13.Bc3 a4 14.h4 g5 (14...0-0-0!?=+) 15.hg5+= h4 16.f4 (16.gf6 0-0-0 17.g4+/–) 16...0-0-0 17.gf6 Rdg8 18.g4 Rg4 19.Kh1 Rf4 20.Ne3 Nf6 (< 20...Rf6 21.Ng4 Rf3 22.Qe2+=) 21.Rg1 Qd8 22.Rg2 Nh5 23.Re1 h3 24.Rg4 Rg4 (better is 24...Qf6!? 25.Qd1 Rf2–+) 25.Ng4=+ Qh4 26.Qd1? (26.Ne5 Be5 27.de5–+) 26...Rg8–+ 27.Rg1 h2 28.Rg2 Nf4 29.Ne3 Ng2 30.Ng2 Qf2 31.Qf1 Qg3 32.Be1 Qg4 33.c3 Qd1 34.Bf2 Qd2 35.Be2 (35.Be1 Qc1–+) 35...Qc3 36.Ne1 Qa3 37.Nd3 (37.Nf3 Qb4 38.Bd3 Qb2–+) 37...Qc3 38.Qc1 (38.Qb1 Qd2 39.Qf1 a3–+) 38...Qc1 39.Nc1 Rh8 40.Bf1 (40.Be1 f6–+) 40...Bb4 41.Be3 Bd6 (42.Nd3 a3–+) 0–1. jaskier (2070) – pierre (2130), internet, 2007.

6.Bc4 Bb4?? 7.Bg7 Qg5 8.Bh8 Qg2 9.Ke2 +-.

6.Bc4 c6 7.0-0 Nf6 (7...Qh4 8.Qc2=) 8.b5 (8.a3 b5 9.Be2 a5=) 8...Bd6 9.a4 (9.Re1 0-0=+) 9...0-0=+ 10.Nc3 (10.Qe2 Nbd7=+) 10...Be5 (10...a6 11.Qe2=+) 11.Re1 Qd6 12.g3 (12.h3 Nbd7=+) 12...c5 (12...Nbd7 13.bc6 bc6 14.Ba3=) 13.Ne4 Ne4 14.Be5 Qe5 15.Re4 Qd6 16.d4 Nd7 (16...Rd8 17.d5=) 17.d5 (17.dc5 Qd1 18.Rd1 Nc5=) 17...e5 (17...Nf6 18.de6 Ne4 19.ef7 Kh8 20.fe4=) 18.a5 b6 (18...a6 19.Qe2=) 19.Qe2 f5 (19...Rfd8 20.Kg2=) 20.Re3 Rae8 21.ab6 ab6 22.Ra7 Rf7 23.Rea3 Nf6 24.Rf7 Kf7 25.Ra7 Re7 26.Qa2 Ra7 27.Qa7+= Kf8 28.Qa8 Ke7 (28...Ne8 29.Bd3 Kf7 30.Qc6 Qc6 31.bc6=) ½–½. Staberg,Karl_Arne – Albonius,Bengt, corr SSKK 2–772, 1993.

6.Bc4 c6 7.a3 b5 8.Be2 Nf6 =.

6.Bc4 Nc6 7.b5 (7.a3 Qg5 8.0-0 Bd6=) 7...Nd4 8.0-0 (8.Nc3 Nf6=) 8...Qd7 (8...Qh4 9.Re1 Bd6 10.g3=) 9.Nc3 Nh6 (9...Nf6 10.Rb1=) 10.Re1 0-0-0 (10...Nhf5 11.a4=) 11.Rc1 Nhf5 12.a4 (12.Qa4 Kb8=) 12...Kb8 (12...Bb4 13.Re4=) 13.Ne2 (13.a5 Nd6 14.Qa4 Be7=) 13...Ne2 (13...Bc5 14.Nf4=) 14.Qe2 Nd4 (14...Qd2 15.Red1 Qg5 16.f4=) 15.Qe5 Be7 16.Qe4 (16.Qg7? Nf3 17.gf3 Rhg8–+) 16...Bf6 17.Bc3 h5 18.Ba5 g5 19.f4 gf4 20.Qf4+= Bg7 21.Bd3 b6 22.Bb4 Bh6 23.Qg3 Rhg8 24.Qh3= Nb3 25.Rc3 Nd2 26.Bh7 Rg4 27.Rd3= Rd4 28.Rd4 Qd4 29.Bc3 Qg4 30.Qg4 hg4 31.Bc2 Bf4 32.Bd1 Ne4 33.Bg7 Rd2 34.Bg4 Nf2 35.Bh5 Nd3 36.Re4 Bd6 37.h4 Rc2 38.Bh6 Rb2 39.Be2 Bc5 40.Kh2 Nf2 41.Bc1 Ra2 42.Rf4 Re2 43.Rf7 Nd3 44.Rf1 Bd6 45.Kg1 Nc1 46.Rc1 Re4 47.h5 Ra4 48.Kf2 0–1. Registration (2370) – Hossa (2550), ICC, 2003.

7.0-0 Bd6 8.a3 =.

7.0-0 Be7 8.Nc3 (8.a3 0-0=) 8...0-0 9.a3 a6 (9...Nc6 10.Ne4=) 10.Ne4 Nd5 (10...Nbd7 11.Qc2=) 11.d4 (11.Re1 Nc6=) 11...c6 12.Rc1 (12.Re1 a5 13.b5 cb5 14.Bb5 Qb6=+) 12...b5 13.Bd3 a5 14.ba5 Ra5 (14...Nf4 15.Qd2 Nd3 16.Qd3 Qa5 17.Nc5=+) 15.Nc5= Ra7 16.Qe1 (16.Qc2 Bc5 17.dc5 Qh4=+) 16...Qd6 (16...Nd7 17.Qe4 g6 18.Rc2–/+) 17.Qe4= g6 18.g3 (18.Qg4 Nd7=+) 18...Bf6 19.h4 Ne7 20.h5 Nf5 21.hg6 hg6 22.Rfd1 Rd8 23.Bf1 Kg7 24.Bh3 Qe7 25.Bf5= gf5 26.Qe2 Qd6 27.Kg2 Rh8 28.Qe3 Nd7 29.Rh1 Raa8 30.Nd3 Nb6?? 31.Ne5?? Nd5= 32.Qd2 Ne7 33.Qc3 Rh1 34.Rh1 Rc8 35.Qc1 Ng8= 36.Rh5 Rc7 37.Qf4 Qd8 38.g4 fg4 39.Ng4+- Kf8 40.Nf6 Qf6 41.Qg3?? Rc8=+ 42.Bc1 Ne7 43.Bh6 Ke8=+ 44.Bg7 Qg6 45.Rg5 Qh7 46.Bf6 Nf5 47.Qg4=+ Kd7 48.f4? Nd4–+ 49.Be5 Qe4 50.Kg3 (50.f3 Qe2 51.Kg3 Qe1 52.Kg2 Qd2 53.Kh3 Qd3 54.Bd4 Qd4–+) 0–1. Piszcz,Kazimierz – Wisniewski,Jan, corr 2. AMM Poland, 1994.

7.a3 Bd6 8.0-0 0-0 9.d4 (9.Qe2 c6=+) 9...c6 (9...Nbd7 10.Nc3=+) 10.Nc3 Nbd7 (10...Qc7 11.g3=+) 11.Ne4 Ne4 (11...Qc7 12.Nd6 Qd6 13.Re1=+) 12.fe4= Qh4 13.e5 Nb6 (13...Be7 14.Bd3=) 14.g3 Qd8 15.Bd3 Be7 16.Be4 (16.Qc2 g6=) 16...Qd7 17.Qc2 g6 18.Bg2 (18.Bd3 a5=) 18...Nd5=+ 19.Rfd1 (19.Qa4 f6=) 19...a5 20.ba5 Ra5 21.Rd3 (21.Qe2 Rfa8=+) 21...Rfa8 22.Rb3 b5 23.Qc1 Ra4 24.h3 R8a6 25.Kh2 Qa7 (26.Qc2 b4=+; 25...f6 26.ef6 Bf6 27.Qd2=+). Subedei – Tihomir Glowatzky, chessworld.net, 2006.

7.Qa4 c6 8.0-0? (better is 8.b5=+) 8...b5–+ 9.Bb5 cb5 10.Qb5 Nbd7 11.Re1 (11.a3 a5–+) 11...Rb8 12.Qc4 (12.Qa6 Bb4 (< 12...Rb4 13.Bc3–+) 13.Bd4 Nc5 14.Qc6 Qd7 15.Qd7 Kd7–+) 12...Bb4 (12...Rb4 13.Qc1–+) 13.Bc3 (13.Bd4 Qa5–+) 13...Bd6 14.Bf6 Qf6 15.Nc3 Qf4 (16.Qf4 Bf4–+) 0–1. yannigator (2080) – pierred (2595), net–chess.com, 2008.

7.b5 Bd6 8.0-0 0-0 9.d3 Nbd7 10.Nd2 Nb6 11.Ne4 Ne4 (worse is 11...Nc4 12.Nf6 (worse is 12.dc4 Ne4 13.fe4 Qh4=) 12...gf6 13.dc4+=) 12.fe4 Bc5 (12...Nc4 13.dc4 Qh4 14.e5=) 13.Qb3 Bd4 14.Rad1 Qf6 15.Bd4 Qd4 16.Kh1 Rad8 17.Rc1 Rd7 18.h3 Rfd8 19.a4 h6 20.f3 Rd6 21.Qc3 Qc3 22.Rc3 Na4 23.Ra3 Nc5 24.Ra7 R8d7 25.Rfa1 b6 26.Ra8 Kh7 27.Rf8 Kg6 28.f4 (28.Rc8!?–/+) 28...Nd3–+ 29.f5 ef5 30.ef5 Kf6 31.Be6 Re7 32.h4 (32.Kh2 Nf4–+) 32...Nc5 33.Bc8? (better is 33.g4–+) 33...Rd4 34.g3 Ne4 35.Kh2 (35.Rg1 Nd6–+) 35...Nd6 (better is 35...Rd2!? 36.Kg1 Ng3 37.Rb1–+) 36.Ba6 Re8 (better is 36...Kf5!? 37.Ra2–+) 37.Re8 Ne8 38.Bc8 Nd6 39.Bd7 Ke7 40.Bc6 Nf5 41.Re1 Kd6 42.Re8 Rd2 43.Kh3 Nd4 44.Rd8 Kc5 45.Be8 (45.Rd5!? Kc4 46.Rd7–/+) 45...Rf2 46.Rd7 Nb5 47.Bf7 (47.g4–+) 47...c6?? (better is 47...Kc6 48.Be8 Rf8 49.Re7 Kd6–+) 48.Bg6–/+ Nd4 49.Rg7 b5 50.Rh7 Rf6 51.h5 b4 52.Rh6 b3 53.Rh8 b2 54.Rb8 Nb5 55.Bd3 Kd4 56.Rd8 (56.Bb1 Kc3–/+) 56...Kc3–+ 57.g4?? (better is 57.Bb1 Nd4 58.Kg2–+) 57...Rf3 58.Kh4 Rd3 59.Rc8 Rd6 60.g5 b1Q 61.g6 Qf5 0–1. Ebert,Lutz – Wagner,Ralf, Mecklenburg VP LL1, 1996. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.ef3 e6 5.c4 dc4 6.Bc4 Nf6)

7.b5 Nbd7 8.a4 Nb6 9.Be2 Nbd5 10.0-0 Be7 11.d4 (11.a5!?=) 11...0-0+= 12.Nd2 Nf4 13.g3 Ne2 14.Qe2 Qd5 15.Rac1 Rfc8 16.Rc4 a6 17.ba6 Ra6 18.Rfc1 c6 19.Qd1 (better is 19.Ne4!?–/+) 19...Nd7–+ 20.Qb3 Nb6 21.R4c3 Rca8 (21...Ra4?! 22.Qb6 Rb4 23.Qa7=) 22.Qd5 ed5 (22...Nd5!? 23.Rb3 R8a7 24.Ba3 Ba3 25.Ra3 Ra4 26.Ra4 Ra4 27.Nb3–+) 23.Rb3 R8a7 (23...Bg5 24.f4 Bf6 25.Rb1+=) 24.Re1 Nc8 25.Ba3 Kf8 (25...Ba3 26.Ra3 Nd6 27.Nb3 Ra4 28.Ra4 Ra4 29.Re7–+) 26.Be7 (26.Bc5!? b6 27.Be7 Re7 28.Ra1–/+) 26...Ne7–+ 27.Reb1 Ra4 28.Rb7 Rb7 29.Rb7 Nf5 30.f4 Nd4 31.Nf1 Nf5 32.Rc7 Ne7 33.Ne3 d4 34.Ng4 (34.Nf1 Ke8–+) 34...f6 35.f3 d3 36.Rd7 Nd5 0–1. Timmermans,M (2175) – Van den Doel,E (2570), 26th Reinis Open, 2011.

7.b5 Nbd7 8.a4 g6 9.0-0= Bg7 10.d4 0-0 11.Nd2 Nb6 12.Bd3 (12.Be2 Nbd5=) 12...Nbd5 13.g3 (13.Ne4 Nf4=) 13...Qd7 14.Rc1 Rfc8 15.Ne4 b6 (15...c6 16.Nc5 Qe7 17.Re1=+) 16.Qb3 Ne8 17.Rfd1 Nd6 18.Bc4 (18.Nc3 Bd4 19.Be4 Bc3 20.Bd5 A) 20...ed5?? 21.Qc3 (21.Bc3?! c6+=; 21.Rc3?! a6+=) 21...f6 22.Qf6+- (22.Rd5?! Qe6+/-); B) 20...Bb2=) 18...Nf5 Attacking the isolated pawn on d4 19.f4 h5 20.Rc2 h4 (20...Rd8 21.h3=) 21.Rdc1 (21.g4 Nfe7=) 21...hg3 (worse 21...Bd4 22.Rd2 Bb2 23.Qb2+-; worse 21...Nd4 22.Bd4 Bd4 23.Rd2+=) 22.hg3 Qd8 (22...a6 23.ba6 c6 24.Rd2=) 23.Bd5 ed5 24.Ng5 Bd4 (24...a6 25.Nf3=) 25.Rd1 Bb2 26.Rb2 (26.Rd5 Qe8 27.Rb2 c5=) 26...d4?? (better 26...Ne7=) 27.Qf7 (27.Qf7 Kh8 28.Qh7) 1-0. BeepBeepImAJeep (2530) - IMAndrasToth (2450), lichess.org, 2016.

7.b5 Be7 8.a4 0-0 9.0-0 a5 10.d4 b6 (10...Nbd7 11.Nc3=) 11.Nd2 Nd5 12.Ne4 Nd7 13.Re1 N7f6 14.Rc1 Nb4 15.Bf1 (15.f4 Qd7=) 15...Nfd5 16.Qb3 Bd6 17.Nd6 Qd6 18.g3 (18.Ba3 Qf4=) 18...Rad8 19.f4 Ne7 20.Bg2 Nf5 Attacks the isolani on d4 21.Red1 Rd7 22.Qc4 Rfd8 23.Ba3 h6 (23...Qe7 24.d5=) 24.Rb1 (better 24.Bc6!? Re7 25.d5+=) 24...Nd4=+ 25.Bb2 (25.Rbc1!?=+) 25...Qc5-/+ 26.Rdc1 Qc4 27.Rc4 Nf5 (27...Nb3 28.Rc3 Nc5 29.Ra3-+) 28.Ba3 (28.h3!?-/+) 28...Rd1-+ 29.Rd1 Rd1 30.Bf1 Nc2?? (30...Nd5 31.Bb2-/+) 31.Bb2?? (better 31.Rc2 Ra1 32.Rc3+-) 31...Rf1!-/+ 32.Kf1 Nce3! 33.fe3 Ne3 34.Ke2 Nc4 35.Bc1 Kf8 36.Kd3 Nd6 37.Ba3 (37.Be3 Ke7-+) 37...Ke7 38.Kd4 Kd7 39.Bb2 c5 40.Kd3 f6 41.g4 Nf7 42.h4 e5 43.f5 (43.Ke3 Ke6 44.Ke4 ef4 45.Kf4 Kd5-+) 43...Kd6 (43...h5 44.gh5 Nd6 45.Ke2-+) 44.Bc1? (44.Ke4-+) 44...Kd5 45.Bd2 c4 (45...h5 46.gh5 Nh6 47.Be3-+) 46.Ke3 (46.Ke2 Kc5 47.Be3 Kb4 48.Bb6 Ka4 49.Bc5 Kb5 50.Bf8-+) 46...Nd6 47.Bc3 Kc5 (better 47...Ne4 48.Bb2-+) 48.Bb2 (48.h5 Kd5-+) 48...h5! 49.Ba3 (49.gh5 Nf5 Double attack (49...Nf5 Deflection)) 49...Kd5 50.Bd6 (50.gh5 Nf5 51.Kd2-+) 50...Kd6 51.g5 Kd5 52.Ke2 fg5 (better 52...Ke4 53.Kd2-+) 53.hg5 e4 54.f6 gf6 55.g6 Ke6 56.Ke3 Ke7 (56...c3 57.Ke2-+) 57.Kf4 (57.Ke4 c3 58.Kd5 c2-+) 57...Kf8 (better 57...c3 58.Ke3-+) 58.Ke4 Kg7 59.Kf5 (59.Kd4-+) 59...c3 60.Kf4 Kg6 (better 60...c2 61.Ke4-+) 61.Ke4 c2 62.Kd5 Black now must not overlook the idea c1Q 62...c1Q 63.Kd6 Qb2 (63...h4 64.Ke7 Qc7 65.Ke6 Qc4 66.Kd6 h3 67.Ke7 h2 68.Kd7 h1Q 69.Ke7 Qh7 70.Kd6 Qhc7) 64.Kd7 Qb3 65.Kc6 Qa4 66.Kb6 (66.Kb6 h4 67.Kc6 h3 68.Kb7 Qb5 69.Kc7 h2 70.Kc8 Qe8 71.Kc7 h1Q 72.Kb6 Qhc6 73.Ka5 Qe1). BeepBeepImAJeep (2520) - LeonLivaic (2595), lichess.org, 2018.

6.a4 Bb4?? 7.Bg7 Qg5 8.Bh8+–.

6.a4 Nf6+= 7.b5 Nbd7 8.Be2 Be7 9.0-0 0-0 10.d3 Qc7 11.g3 (11.Re1 Bd6 12.h3 dc4 13.dc4 Bh2 14.Kh1 Be5 15.Be5 Ne5+=) 11...Ne5 (11...cb5 12.ab5 a6 13.Nc3–/+) 12.f4+= Ng6 13.Nd2 Rad8 14.Qc2 c5 Black plans d4 15.Rad1 d4 16.Ne4 b6 (16...a6 17.Bf3+=) 17.Bc1 Nd7 18.Bf3 f5 (18...a6 19.h4=) 19.Ng5 (better is 19.Nd2=) 19...Qd6?? (19...Bg5 20.fg5 Nde5 21.Bh5=) 20.Bg2?? (20.Ne6 Qe6 21.Bd5 Qd5 22.cd5 Nf6+-) 20...h6?? (better is 20...Bg5 21.fg5 f4=) 21.Ne6!+- Rf6 (21...Qe6 22.Bd5 Pinning (22.Bd5 Decoy)) 22.Nd8 Bd8 23.Rfe1 Bc7 (23...Kh7 24.Re2+-) 24.Re2 (24.Re8 Kh7+-) 24...Ngf8 (24...Bd8 25.Bd5 Kh7 26.Rde1+-) 25.Rde1 Rf7 (25...Kh7 26.Bd5+-) 26.Bd5 (26.Bd5 Nf6 27.Bf7 Kf7 28.Bb2+-) 1–0. Cerami,Giuseppe (1680) – Fontana,Giulio, Sicilia Regional–ch, 2009.

6.c5 Nf6 7.Be2 Nbd7 8.0-0 g6 9.Na3 (9.Nc3 Bg7+=) 9...Bg7 10.Rc1 0-0 11.Qb3 Nh5 12.Bg7 Ng7 13.d4 Nf5 14.Rfd1 h5 15.Nc2 a6 16.Ne3 Qg5 17.Nf5 ef5 18.a4 Rfe8 19.Bf1 h4 20.h3 Nf6 21.b5 ab5 22.ab5 Nh5 23.bc6 bc6 24.Qb7 Rac8 25.Ra1 Nf4 26.Ra7 Rf8 27.Kh2 Ne6 28.Ba6 Qf4 29.Kg1 Nd4 (29...Rc7!? 30.Qb6 Ra7 31.Qa7 Nd4-/+) 30.Qd7 (30.Qb2 Nb5 31.Bb5 Rb8+=) 30...Rcd8 31.Qe7 (better 31.Qc7 Ne6 32.Qf4 Nf4 33.Rc7=) 31...Rfe8?? (better 31...Ra8-/+) 32.Qf6 (32.Qf7 Kh8 33.Qg7) 32...Nf3 33.gf3 Qf3 (33...Rf8 34.Rd4 Qc1 35.Kg2 Qh6 36.Rh4 Qg7 37.Qc6 Qe5+-) 34.Qf7 (34.Qf7 Kh8 35.Qg7) 1-0. carlos78 (2220) - Metalhead_666 (2230), Rated Blitz game, lichess.org, 2015.

6.c5 Nf6 7.Be2 g6 8.0-0 Bg7 9.a4 0-0 10.a5 a6 11.Nc3 Nbd7 12.Na4 Re8 13.Nb6 Rb8 14.h3 Qc7 15.g3 Rbd8 16.f4 Ne4 17.Bg7 Kg7 18.Qc2 Nb6 19.ab6 Qe7 20.Ra3 e5 21.fe5 Qe5 22.Bf3 Nf6 23.Bg2 Qd4 24.Qb3 Re2 25.d3 Rde8 26.b5 ab5 27.Ra7 R8e7 28.Qa3 Nh5 29.Bf3 Ng3 30.Be2 Ne2 31.Kg2 Nf4 32.Kh1 Nd3 33.Ra4 Nf2 34.Kg2 ba4 35.Rf2 Qe4 36.Kg3 Qe3 37.Rf3 Qg1 38.Kh4 Re4 (38...Re4) 0-1. carlos78 (2250) - uoylliki (2345), Rated Blitz game, lichess.org, 2015.

6.cd5 cd5 7.a3 Nf6=.

6.cd5 cd5 7.Bb5 Nd7 8.0-0 Ngf6 (8...Bb4?? 9.Bg7 Bd6 10.Bh8+-) 9.a3 Be7 10.Nc3 0-0 11.Ne2 Rc8 12.Rc1 Qb6 (12...a6!? 13.Rc8 Qc8 14.Bd7 Qd7=+) 13.Rc8 Rc8 14.Ba4 (better 14.Qa4!? Rc7 15.Bd4+=) 14...a5 15.Bd4 (15.Bd7 Nd7 16.Qa4 Rc7 17.Qa5 Qa5 18.ba5 Rc2=) 15...Qd8 16.Qb1 ab4 17.ab4 Nb6 18.Bc2 h6 (18...Nc4 19.Bf6 gf6 20.Bh7 Kg7 21.Rd1=+) 19.b5 (19.Rc1 Nc4 20.Bc3 Bd6=+) 19...Nc4-/+ 20.Bc3? (better 20.Rc1-/+) 20...Na3-+ 21.Qa2 Nc2 (21...Nb5?! 22.Be5-+) 22.Qc2 d4! 23.Nd4 (23.Bd4 Rc2 Pinning (23...Rc2 Deflection); 23.Nd4 Qd4) 23...Qd4!! 24.Bd4 (24.Ra1 Qd7-+) 24...Rc2 25.Bc3 (25.Rd1 Nd5-+) 25...Nd5 26.Be5 (26.g3 Nc3 27.dc3 Bc5-+) 26...Rd2 27.h4 (27.Rc1 f6 28.Bb8 Rb2-+) 27...Bc5 (27...Bh4 28.g3 Bd8 29.f4-+) 28.Bg3 (28.h5 f6 29.Bg3 Nc3-+) 28...Rb2 29.Ra1 Rb5 30.Ra8 Kh7 31.Rd8 g5 32.h5 Nf4 33.Kh2 (33.Bf4 gf4 34.Rd2 Rb1 35.Kh2 Rf1-+) 33...Kg7 (33...Nh5 34.Rd2-+) 34.Rc8 (34.Bf4 gf4 35.Rd2 Ba3-+) 34...Be7 (34...Nh5!? 35.Kh3-+) 35.Rc7 Bf6 36.Rc8 (36.Bf4 gf4 37.Kg1 Rb1 38.Kh2 b5-+) 36...Nh5 37.Bd6 Be5 38.Be5 Re5 39.g3 Rb5 40.Rc7 Rb2 41.Kh3 Rf2 42.Rb7 Rf3 43.Kg4 Rg3 44.Kh5 Rh3 45.Kg4 Rh4 (better 45...Rd3 46.Kh5-+) 46.Kg3 Rf4 47.Re7 h5 48.Re8 h4 49.Kg2 Kg6 50.Kh3 Kf5 51.Rg8 f6 52.Rg7 e5 53.Rg8 (53.Kh2 g4 54.Rh7 g3 55.Kh3 Rf2 56.Rh4 Rh2 57.Kg3 Rh4 58.Kh4 Kf4-+) 53...Rf3 54.Kg2 Rg3 55.Kh2 e4 56.Ra8 Kf4 57.Ra4 f5 58.Ra5 (58.Ra1 e3 59.Re1 Rf3-+) 58...g4 (58...e3 59.Ra1 e2 60.Ra4 Ke3 61.Ra5 g4 62.Ra3 Kf2 63.Rf3 Rf3 64.Kh1 Rh3) 59.Ra8 (59.Ra1 e3 60.Re1-+) 59...Rd3 60.Ra1 Rd2 61.Kh1 e3 (61...h3 62.Rf1 Kg5 63.Rc1 g3 64.Rb1 e3 65.Ra1 e2 66.Re1 Rd1 67.Rg1 Rg1 68.Kg1 e1Q) 62.Rf1 Rf2 (62...Kg3 63.Ra1 e2 64.Ra3 Kf2 65.Ra1 Rd3 66.Ra3 e1Q 67.Kh2 Qg1) 63.Ra1 (63.Rc1 e2 64.Kg1 g3 65.Kh1 h3 66.Rc4 Kg5 67.Rg4 Kg4 68.Kg1 e1Q) 63...e2 64.Ra4 (64.Re1 Kg3 65.Kg1 h3 66.Rc1 h2 67.Kh1 Rf1 68.Rf1 ef1Q) 64...Kg3 65.Ra3 Rf3 (65...Rf3 66.Rf3 gf3 67.Kg1 e1Q) 0-1. carlos78 (2245) - uoylliki (2245), Rated Blitz game, lichess.org, 2015.

6.cd5 cd5 7.Be2 Nf6 8.a3 g6 9.0-0 Bg7 10.Nc3 0-0 11.b5 Nbd7 12.a4 Rc8 13.Ba3 Re8 14.Qb3 Nb6 15.Rac1 Nc4 16.Bc4 Rc4 17.d3 Rc8 18.Ne2 Qd7 19.a5 Rc1 20.Rc1 Rc8 21.Rc8 Qc8 22.a6 b6 23.Nd4 Qc7 24.Nc6 Nd7 25.d4 h5 26.h3 Bf6 27.Qc3 Kg7 28.Bb4 h4 29.Qa3 Nb8 30.Bd6 (30.Bd6) 1-0. carlos78 (2245) - uoylliki (2350), Rated Blitz game, lichess.org, 2015.

6.a3 dc4 7.Bc4 Bd6 =.

6.Qb3 dc4 7.Bc4 Be7 8.Nc3 (8.0-0 0-0=) 8...0-0=+ 9.0-0 (9.Ne4 Nc6=+) 9...Nc6 10.Ne4 (10.a3 Qd2 11.Nb5 Qh6–/+) 10...Ne4 11.fe4 Qd2 The pressure on b4 grows 12.a3 Rad8 (12...Nd4 13.Qc3 Qc3 14.Bc3–/+) 13.Rae1 White intends e5 (13.Rad1 Qf4=+) 13...Nd4–/+ 14.Bd4 Qd4 (14...Rd4? 15.Rd1 Qd1 16.Rd1 (worse 16.Qd1 Rd1 17.Rd1 Rd8 18.Rd8 Bd8–/+) 16...Re4 17.Bd3+-) 15.e5 (15.Qc2 Bd6–/+) 15...Qb6 (15...a6 16.Qc2–/+) 16.Kh1 (16.Qc2 a5–/+) 16...a5 17.f4 (17.ba5 Qb3 18.Bb3 Ra8–/+) 17...g6 (better 17...ab4!? 18.a4 Rd2–+) 18.b5 (18.ba5 Qb3 19.Bb3 Ba3–/+) 18...Rd2 (18...Rd4 19.a4–/+) 19.g4 (19.a4 Rfd8–/+) 19...Qd4 (19...c6 20.f5 cb5 21.Bb5 Ba3 22.fe6 Qe6 23.Qe6 fe6 24.Bc4–+) 20.Re2 Re2 21.Be2 Qe4 (21...Rd8 22.a4–/+) 22.Qf3=+ Qf3 (22...Qc2 23.Bd3 Qb3 24.Be2–/+) 23.Rf3 Rd8 24.Rc3 Rd7 (24...Rd2 25.Bf3 b6 26.a4=+) 25.Kg2 b6 26.a4 Rd2 27.Kf3 Bc5 28.Rd3 (28.h3 g5=) 28...Ra2=+ 29.Bd1 Rh2 30.Rd7 h5 (30...Rh3 31.Kg2 Rc3 32.Rd8 Kg7 33.Rd7–/+) 31.Kg3=+ Rh1 32.gh5 gh5 33.f5 (33.Bf3 h4 34.Kg4 Ra1–/+) 33...h4 34.Kg2 (34.Kg4!? ef5 35.Kf5–/+) 34...Rg1 35.Kh2 (35.Kh3 ef5 36.Kh4 Bf2 37.Kh3 Bg3–+) 35...ef5–+ 36.Bb3 (36.Bh5 Re1 37.Kh3 Re5 38.Kh4 Be7 39.Kh3 f4–+) 36...Rg7 (36...Re1 37.Rf7 Bg1 38.Kg2 h3 39.Kh3 Re3 40.Kh4 Rb3 41.Rc7–+) 37.e6 (37.Rc7 Kf8 38.Rc8 Ke7 39.Rc7 Ke8 40.Rc8 Kd7–/+) 37...fe6 (37...Rg3!? 38.ef7 Kg7 39.Be6–+) 38.Be6–/+ Kf8 39.Rg7 Kg7 40.Bf5 Kf6 41.Bc2 (41.Bd7 Ke5–/+) 41...Ke5 42.Kh3 Bf2 43.Kg2 (43.Bd1 Kd4–/+) 43...Bg3–+ 44.Bd1 Kd4 45.Kh3 Kc5 46.Kg2? (better 46.Be2–+) ½–½. Ivanets,Vladimir – Skomorokhin,Roman, It (open) Moscow (Russia), 1995. (=1.Nf3 d5 2.b4 Bg4 3.c4 Bf3 4.ef3 e6 5.Bb2 Nf6)

6.Qb3 c6 7.d4 Bd6 (7...dc4 8.Bc4 b5 9.Be2-/+) 8.c5= Bc7 9.a4 Nbd7 10.Bd3 0-0 11.Nd2 (11.0-0 b6=) 11...e5 (11...Bf4 12.Rd1=+) 12.de5 Be5 13.0-0 Bb2 14.Qb2 Re8 15.Rae1 Qc7 (15...a5 16.Bf5=+) 16.g3 (16.Qd4 Rad8=) 16...Nf8 (16...a5 17.Re8 Re8 18.f4-/+) 17.f4 Qd7 18.Kg2 Qg4 19.Qc2 (better 19.h3 Qd7 20.Nf3=) 19...h5?? (better 19...Re1 20.Re1 Ne6=) 20.Bf5+- Qe2 21.Re2 Re2 22.Qd3 Re7 23.Nf3 Rae8 24.Ne5 (24.Rd1 N8d7+-) 24...g6 25.Bh3 Ne6 (25...N6d7 26.Nd7 Nd7 27.Bd7 Rd7 28.f5+-) 26.Ng6! fg6 (26...Rc7 27.a5+-) 27.Qg6 Ng7 28.Qf6 Rf7 (28...Re4 29.b5 Ra4 30.bc6+-) 29.Qg6 Re6 (29...Re4+-) 30.Be6 (30.Be6 d4 31.Qf7 Kh7 32.Bf5 Kh6 33.Qf6) 1-0. ClayPigeons (2125) - FarMirz (2050), Rated Bullet game, lichess.org, 2021.

6.b5 dc4 7.Bc4 Nbd7 8.0-0 Bd6 9.a4 0-0 10.d4 Nb6 11.Bd3 Nbd5 12.Nd2 Nf4 13.Bc2 a6 14.Ne4 Be7 (14...ab5 15.ab5 Ne4 16.fe4-/+) 15.g3 N4d5 16.Nc5 ab5 17.ab5 b6 18.Nd3 Qd7 19.Ba4 Rfc8 20.Ne5 Qe8 21.Nc6 Bd6 22.f4 Nb4 23.Nb4 (23.Qf3 Nc6 24.bc6 Ra7=) 23...Bb4=+ 24.Qb3 Nd5 25.Qc4 Bd6 (25...g6 26.Ra2=+) 26.Bc2 Ra1 27.Ra1 Ra8 28.Ra8 Qa8 29.Be4 (29.f5 Qc8+=) 29...g6 30.Qb3 (30.h3 Be7=) 30...h5 31.Bf3 Kf8 32.Kg2 Ke7 33.Bc1 Kd7 34.Bd2 Qb7 35.Qc4 c6 36.bc6 Qc6 37.Qb3 b5 38.Be2?? (better 38.Qa2=) 38...Nf4 39.Kf1 (39.Kg1 Qg2) 39…Qh1 0-1. BeepBeepImAJeep (2670) - Fins (2620), lichess.org, 2015.

6.b5 Nbd7 7.d4 c6 8.c5 Qc7 9.Nd2 b6 10.bc6 Qc6 11.cb6 Qb6 12.Rb1 Qa5 13.Qc2 Rb8 (13...Qa2? 14.Ra1 Qa1 15.Ba1+-) 14.Bc3 Rb1 15.Nb1 Bb4 16.Bd3 0-0 17.0-0 Bc3 18.Nc3 Rc8 19.Rc1 Qa3 20.Qd2 Nb6 21.Ne2 Rc1 22.Nc1 Nc4 23.Qc2 Qb4 24.g3 g6 25.Kg2 Nd7 26.Qb3 a5 27.Qb4 ab4 28.Kf1 Nb8 29.Nb3 Nc6 30.Ke2 Kf8 31.Bc2 Ke7 32.Kd3 Nb2 33.Ke3 Kd6 34.Na1 Nc4 35.Kd3 Nb2 (35...e5 36.Bb3 Na3 37.f4 e4 38.Ke3 Nc4 39.Bc4 dc4 40.Ke4 f5 41.Ke3–/+) 36.Ke3 Nc4 (better is 36...f6–/+) 37.Kd3= Nb2 (better is 37...e5 38.Bb3 Na3–/+) ½–½. Palmi,Herbert – Wimmer,Alfred (2120), Niederbayern–chA, 1999.

6.b5 Be7 7.a4 0-0 8.Ke2? c6 9.Kd3? (better 9.Ke1!?-+) 9...Nbd7 10.Qe1 d4! 11.Qc1? (11.Bd4 Nc5 Double attack; 11.Kd4 cb5 Combination) 11...Nb6 (better 11...Nc5 12.Kc2 d3 13.Kd1 Nb3-+) 12.Qc3?? (12.Kc2-+) 12...Qb8 (better 12...dc3 13.Kc3 cb5 14.ab5-+) 13.Na3 (13.Qb3 Nfd7 14.Kc2 Nc5-+) 13...Re8 (better 13...dc3 14.Kc3 Na4 15.Kb3 Nb2-+) 14.Qd4 (14.Qc1-+) 14...Nbd7 (better 14...Rd8 15.Kc2 Rd4 16.Bd4 Qd6-+) 15.b6? (better 15.Kc2-/+) 15...c5?? (better 15...ab6 16.Ke2 e5-+) 16.Bc3 ½-½. BeepBeepImAJeep (2730) - KillerBateman (2520), Rated Blitz game, lichess.org, 2015.

6.b5 Be7 7.a4 0-0 8.Be2 c6 9.0-0 Nbd7 10.d4 dc4 11.Bc4 Nb6 12.Bd3 Qd7 13.Nd2 Rfd8 14.Qc2 Rac8 15.bc6 Qc6 16.Qb1 (16.Qc6 Rc6 17.a5 Nbd5=+) 16...h6 (16...Na4 17.Rc1 Qd7 18.Rc8 Rc8 19.Nc4-/+) 17.Ne4 Nbd5 (17...Na4 18.Ba3 Ba3 19.Ra3-/+) 18.Rc1=+ Qd7 19.g3 (19.Nc5 Bc5 20.dc5 Qe7=+) 19...Rc1 20.Qc1 Rc8 21.Qd1 Nb4 22.Bb1 Nbd5 23.Ba2 (23.Bd3!?=) 23...b6 24.Bb3 Bb4 25.Rc1 Rc1 26.Qc1 Be7 27.Qc4 Qc7 28.Kg2 Qc4 29.Bc4 Kf8 30.h4 Ke8 31.Kf1 Kd8 32.Ke2 Nb4 33.Bc3 Nfd5 34.Bb2 Kc7 35.f4 f5 (35...g6 36.Nd2=+) 36.Nd2= Bf6 37.Nf3 Nc6 Attacking the isolated pawn on d4 38.Ne5 Ne5 39.de5 Be7 40.Kd3 (40.h5 Kc6+=) 40...g6= 41.Bd4 Nb4 42.Kc3 Nd5 43.Kb3 Kc6 (better 43...Kd7!?=) 44.Bb5+/- Kc7 45.Be8 g5 46.hg5 (46.fg5 hg5 47.h5 Bf8+/-) 46...hg5+= 47.Be3 (better 47.fg5!? Bg5 48.Kc4+=) 47...gf4-/+ 48.gf4 Bc5 49.Bc5 bc5 50.Kc4 (50.a5 Nf4 51.Kc4 a6=) 50...Nf4=+ 51.Kc5 (51.a5 a6=+) 51...Nd3-/+ 52.Kd4 Nf2 53.Bb5 Ng4 54.Be2 a5 55.Bc4 Kd7 56.Be2 Nh6 57.Bb5 Kc7 (better 57...Kd8!?-/+) 58.Bc4= Kd7 59.Bb5 Kc7 (better 59...Ke7!?-/+) 60.Bc4= Kd7 61.Kc5 (61.Bb5 Kd8 62.Bc4-/+) 61...f4-/+ 62.Kd4 Nf7 63.Ke4 f3 64.Bf1 f2 65.Be2 Kc6 66.Ke3 (66.Kd4 Nh6 67.Bb5 Kb6-+) 66...Kc5 67.Kf2 Ne5 68.Ke3 Kb4 69.Kd4 (better 69.Kf4 Nd7 70.Bd1-+) 69...Nc4?? (better 69...Nc6 70.Kd3 Ka4-+) 70.Bc4= Ka4 71.Be6 Kb4 72.Kd3 a4 73.Kc2 a3 74.Kb1 a2 75.Ka2 ½-½. BeepBeepImAJeep (2730) - KillerBateman (2520), lichess.org, 2015.

6.b5 Be7 7.a4 0-0 8.Be2 c6 9.0-0 Nbd7 10.d4 c5 11.Nd2 cd4 12.Bd4 Bc5 13.Bb2 dc4 (13...Rc8 14.Rc1=+) 14.Bc4 Nb6 15.Be2 Bb4 (15...Bd4 16.Bd4 Qd4 17.Nc4=) 16.Ne4 Qd1 (16...Nh5 17.a5 Nd5 18.a6 ba6 19.Ra6=) 17.Rfd1 (17.Bd1?! Ne4 18.fe4 Nc4=; worse 17.Rad1 Nfd5=+) 17...Ne4 18.fe4 Rfd8 19.Bd3 Nd7 20.Rac1 (20.e5 Rac8+=) 20...Nc5 21.Bc2 Kf8 (21...Bd2 22.Rb1=) 22.f3 f6 23.Kf1 h6 24.Ke2 Ke7 25.Bd4 b6 26.Rb1 Ba5 27.Bb3 (27.e5 Rac8+=) 27...e5 (27...Nb3 28.Rb3 Rac8 29.Rbd3=+) 28.Ba1 (28.Bc5 bc5 29.Bd5 Rac8=) 28...Nb3 (28...Rd1 29.Bd1 Rd8 30.Bb2=+) 29.Rb3= Rd1 30.Kd1 Rd8 31.Ke2 (better 31.Kc1=+) 31...Rd4?? (better 31...Rd2 32.Ke3 Rg2-/+) 32.Bd4+- ed4 33.Kd3 Bc3 34.Rc3 Kd6?? (34...dc3 35.Kc3 g5+-) 35.Kd4 1-0. BeepBeepImAJeep (2575) - jozarov (2195), lichess.org, 2017.

6.c5 a5 7.Qb3 =.

6.c5 Nbd7 A) 7.Be2 A1) 7...Be7 8.d4 (8.Nc3 0-0 9.0-0 Re8 10.Re1 c6 11.d4 b6 12.a3 a5 13.b5=; 8.a3 c6 9.0-0 b6 10.d4 a5 11.Bd3 ab4 12.ab4 Ra1 13.Ba1=+; 8.0-0 0-0 9.Re1 Re8 10.Nc3 c6 11.d4 b6 12.Bd3 Qc7 13.a3=) 8...a6 9.0-0 0-0 10.Bd3 c6 11.a4 a5 12.b5 Qc7 13.b6+=; A2) 7...c6 8.d4 (8.Nc3 b6 9.d4 Be7 10.b5 cb5 11.c6 Nb8 12.Bb5 Qc7 13.Qa4=+; 8.0-0 Be7 9.a3 b6 10.cb6 ab6 11.Qc2 c5 12.bc5 bc5 13.Re1=+; 8.a3 b6 9.d4 Be7 10.0-0 a5 11.Bd3 ab4 12.ab4 Ra1 13.Ba1=+) 8...Be7 9.0-0 0-0 10.Re1 b6 11.Bd3 a5 12.a3 ab4 13.ab4=+; A3) 7...a5 8.a3 Be7 9.0-0 0-0 10.Re1 ab4 11.ab4 Ra1 12.Ba1 b6 13.c6=+; B) 7.a3 B1) 7...Be7 8.Be2 (8.Bd3 c6 9.0-0 b6 10.cb6 ab6 11.Re1 Bd6 12.h3 0-0 13.Qc2=+) 8...0-0 9.0-0 c6 10.Qc2 Qc7 11.Re1 b6 12.d4 a5 13.cb6=; B2) 7...a5 8.Nc3 (8.Be2 Be7 9.0-0 0-0 10.Re1 ab4 11.ab4 Ra1 12.Ba1 b6 13.c6=+; 8.Bd3 c6 9.Nc3 ab4 10.ab4 Ra1 11.Qa1 Be7 12.0-0 0-0 13.Rc1=; 8.Bb5 ab4 9.ab4 Ra1 10.Ba1 c6 11.Be2 Be7 12.0-0 0-0 13.Re1=+) 8...Be7 9.Be2 ab4 10.ab4 Ra1 11.Qa1 0-0 12.0-0 c6 13.Qa4=; B3) 7...Qe7 8.Nc3 (8.Bd3 Nh5 9.g3 c6 10.0-0 0-0-0 11.Qa4 Kb8 12.Re1 Qg5 13.Bc2=; 8.Qa4 c6 9.Be2 Nh5 10.g3 Qg5 11.Nc3 Nhf6 12.d4 Be7 13.b5=; 8.Be2 Nh5 9.g3 c6 10.Qa4 Qg5 11.d4 Qg6 12.Nc3 Be7 13.b5=) 8...e5 9.Be2 c6 10.0-0 0-0-0 11.Re1 d4 12.Ne4 Ne4 13.fe4+=; B4) 7...c6 8.d4 Be7 9.Bd3 0-0 10.0-0 b6 11.Qc2 a5 12.cb6 Qb6 13.ba5=; C) 7.Bd3 C1) 7...Nh5 8.Bc2 (8.g3 a5 9.a3 Be7 10.0-0 0-0 11.Re1 Bf6 12.Nc3 Ne5 13.Qe2=; 8.Bf1 Be7 9.Be2 Bf6 10.Nc3 Nf4 11.0-0 d4 12.Re1 dc3 13.dc3–+; 8.Nc3 b6 9.c6 Ne5 10.Bb5 Nf4 11.d4 Nc4 12.Bc4 dc4 13.0-0–/+) 8...Qh4 9.a3 Nf4 10.0-0 Qg5 11.g3 Nh3 12.Kg2 Nf4 13.Kh1=; C2) 7...g6 8.Nc3 (8.a3 Bg7 9.0-0 c6 10.Re1 Qc7 11.Nc3 0-0-0 12.Qe2 h6 13.Bc2=; 8.0-0 a5 9.a3 Bg7 10.Re1 0-0 11.Nc3 c6 12.Qc2 Qc7 13.Ne2=; 8.Be2 a5 9.a3 Bg7 10.0-0 ab4 11.ab4 Ra1 12.Ba1 0-0 13.Re1=) 8...a5 9.a3 Bg7 10.0-0 0-0 11.Re1 Re8 12.Qc2 e5 13.Be2=; C3) 7...a5 8.a3 c6 9.Nc3 ab4 10.ab4 Ra1 11.Qa1 Be7 12.0-0 0-0 13.Rc1=; C4) 7...c6 8.0-0 (8.Qc2 b6 9.b5 Nc5 10.bc6 Nd3 11.Qd3 Rc8 12.Qa6 Rc6 13.Qa7–/+; 8.Qe2 b6 9.cb6 Qb6 10.b5 cb5 11.Bf6 Nf6 12.Bb5 Kd8 13.Nc3=+; 8.a3 b6 9.cb6 ab6 10.0-0 Bd6 11.Re1 0-0 12.h3 Qc7 13.Nc3=+) 8...b6 9.cb6 Qb6 10.a3 Bd6 11.Nc3 0-0 12.Rb1 Qc7 13.h3=+; D) 7.Nc3 Be7 (7...a5 8.a3 Be7 9.Be2 b6 10.c6 Ne5 11.b5 Ng6 12.d4 0-0 13.0-0=) 8.Be2 (8.d4 0-0 9.a3 a5 10.b5 c6 11.Rb1 Re8 12.f4 cb5 13.Bb5=; 8.a3 0-0 9.Be2 b6 10.d4 a5 11.0-0 ab4 12.ab4 Ra1 13.Qa1=) 8...a5 9.a3 ab4 10.ab4 Ra1 11.Qa1 0-0 12.0-0 b6 13.c6=.

6.c5 Be7 A) 7.Bd3 A1) 7...0-0 8.Qc2 (8.0-0 Nbd7 9.Re1 c6 10.Qe2 b6 11.b5 Nc5 12.bc6 Qc8 13.Nc3–/+; 8.a3 b6 9.Qc2 bc5 10.bc5 Nbd7 11.c6 Nc5 12.0-0 Qd6 13.Rc1=+) 8...Nbd7 9.0-0 a5 10.a3 c6 11.Re1 b6 12.cb6 Qb6 13.ba5=+; A2) 7...a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 0-0 11.0-0 Nc6 12.Qb3 b6 13.Rc1=+; A3) 7...Qd7 8.Qc2 (8.0-0 a5 9.a3 0-0 10.Re1 d4 11.Qc1 Rd8 12.Qc4 b6 13.cb6=; 8.a3 b6 9.Bd4 0-0 10.Qc2 Nc6 11.Bb2 bc5 12.bc5 Rfb8 13.0-0=+; 8.Qb3 a5 9.a3 0-0 10.0-0 ab4 11.ab4 Ra1 12.Ba1 b6 13.Qc2=) 8...Nc6 9.a3 d4 10.Bb5 a5 11.Bc6 bc6 12.Qd3 ab4 13.ab4=; A4) 7...Nbd7 8.0-0 0-0 9.Re1 c6 10.Qe2 b6 11.b5 Nc5 12.bc6 Qc8 13.Rc1–/+; B) 7.Qa4 Nbd7 8.d4 a5 9.b5 Nh5 10.Qc2 0-0 11.Bc1 Bf6 12.Qb2 Re8 13.f4=+; C) 7.Be2 C1) 7...0-0 8.Qc2 (8.a3 b6 9.d4 c6 10.0-0 a5 11.Re1 ab4 12.ab4 Ra1 13.Ba1=+; 8.Qa4 a5 9.a3 b6 10.c6 d4 11.Bd3 Nd5 12.0-0 Nf4 13.Bc4=+; 8.0-0 a5 9.a3 Nbd7 10.Re1 ab4 11.ab4 Ra1 12.Ba1 b6 13.c6=+) 8...Nbd7 9.0-0 a5 10.a3 Re8 11.Nc3 b6 12.d4 c6 13.Rfb1=; C2) 7...Nbd7 8.d4 (8.a3 0-0 9.0-0 c6 10.Qc2 Qc7 11.Re1 b6 12.d4 a5 13.cb6=; 8.Nc3 a5 9.a3 b6 10.c6 Ne5 11.b5 Ng6 12.d4 0-0 13.0-0=; 8.0-0 0-0 9.Re1 Re8 10.Nc3 c6 11.d4 Qc7 12.Bc1 b6 13.Be3=) 8...a6 9.0-0 0-0 10.Bd3 c6 11.a4 a5 12.b5 Qc7 13.b6+=; C3) 7...d4 8.Qb3 (8.Qa4 c6 9.Qb3 a5 10.Qc4 d3 11.Bd3 ab4 12.Be4 Na6 13.d4=; 8.Qc2 Nc6 9.0-0 a5 10.b5 Nb4 11.Qc4 d3 12.Bd1 Qd5 13.Qd5=+; 8.f4 Nd5 9.Bf3 c6 10.Bd5 Qd5 11.0-0 b6 12.cb6 ab6 13.a3=+) 8...Nc6 9.0-0 0-0 10.Re1 a6 11.Bc4 a5 12.a3 ab4 13.ab4=; C4) 7...a5 8.a3 0-0 9.0-0 ab4 10.ab4 Ra1 11.Ba1 b6 12.Qc2 bc5 13.bc5=+; D) 7.d4 D1) 7...a5 8.b5 (8.ba5 0-0 9.Qb3 Ra7 10.Bd3 Nc6 11.0-0 Na5 12.Qc3 Qd7 13.Na3=; 8.Qa4 Nbd7 9.b5 Nh5 10.Bc1 Bc5 11.Nc3 Qf6 12.Be3 Nb6 13.Qd1–/+) 8...b6 9.c6 0-0 10.Bd3 Bb4 11.Nc3 Ne8 12.a3 Bd6 13.0-0=; D2) 7...Nfd7 8.Qa4 (8.Bd3 Bf6 9.Qa4 0-0 10.0-0 Nc6 11.Rd1 a5 12.b5 Nb4 13.Bc3=; 8.Be2 0-0 9.0-0 Bg5 10.Re1 Qf6 11.Qd3 c6 12.Nc3 Na6 13.a3=; 8.a3 Bf6 9.Bd3 Nc6 10.Be2 Ne7 11.0-0 a5 12.Re1 0-0 13.Bd3=) 8...a6 9.Bb5 c6 10.Bd3 0-0 11.0-0 Nf6 12.Re1 b5 13.Qb3+=; D3) 7...0-0 8.Bd3 (8.Qa4 c6 9.Bd3 b5 10.Qb3 a5 11.a4 Na6 12.ba5 Qa5 13.Bc3=; 8.Be2 b6 9.0-0 a5 10.a3 ab4 11.ab4 Ra1 12.Ba1 c6 13.Bd3=+; 8.Nd2 b6 9.Rc1 Nh5 10.Be2 Nf4 11.0-0 bc5 12.bc5 Bh4 13.Re1=+) 8...b6 9.0-0 a5 10.a3 Re8 11.Re1 ab4 12.ab4 Ra1 13.Ba1=.

6.c5 g6 7.Qa4 A) 7...c6 8.Be2 (8.Bd3 Nbd7 9.Qc2 Bg7 10.0-0 Qc7 11.Re1 Qf4 12.a3 0-0 13.Nc3=; 8.Nc3 Nbd7 9.d4 Bg7 10.Bd3 Nh5 11.Ne2 Qg5 12.0-0 Nf4 13.Nf4=) 8...Bg7 9.0-0 Qc7 10.Nc3 Qf4 11.Rad1 d4 12.b5 0-0 13.g3=; B) 7...Nbd7 8.c6 (8.Qb5 a5 9.a3 Ra7 10.Nc3 ab4 11.ab4 c6 12.Qd3 Ra1 13.Ba1=+; 8.a3 c6 9.d4 Bg7 10.Nd2 0-0 11.b5 cb5 12.Qb5 Qc7 13.Rc1=+; 8.d4 Bg7 9.Bd3 Nh5 10.g3 c6 11.0-0 Qf6 12.f4 0-0 13.Re1=) 8...bc6 9.a3 Bd6 10.Qc6 0-0 11.Be2 Nh5 12.g3 Nhf6 13.0-0=.

6.c5 g6 7.Nc3 A) 7...c6 8.Qc2 (8.a3 b6 9.d4 Bg7 10.Be2 Nfd7 11.Qd3 a5 12.0-0 Qh4 13.Rfd1=; 8.Be2 b6 9.d4 Bg7 10.0-0 Nfd7 11.Qd2 0-0 12.Rfe1 a5 13.a3=; 8.d4 Bg7 9.Bd3 Nfd7 10.Ne2 b6 11.Bc3 0-0 12.0-0 Qe7 13.Qc2=) 8...b6 9.d4 Bg7 10.Bd3 Nfd7 11.Ne2 0-0 12.0-0 Qf6 13.Bc3=; B) 7...Be7 8.Be2 (8.a3 0-0 9.Be2 b6 10.d4 a5 11.0-0 ab4 12.ab4 Ra1 13.Ba1=; 8.Qa4 Nbd7 9.d4 0-0 10.Bd3 a5 11.ba5 e5 12.c6 bc6 13.Qc6=+; 8.Bd3 0-0 9.a3 b6 10.Na4 Nfd7 11.Qc2 Bf6 12.0-0 Bb2 13.Nb2=) 8...a5 9.a3 0-0 10.0-0 ab4 11.ab4 Ra1 12.Qa1 b6 13.Na4=; C) 7...a5 8.Nb5 (8.Qe2 c6 9.a3 ab4 10.ab4 Ra1 11.Ba1 Bg7 12.Qd1 b5 13.Be2=+; 8.a3 Bg7 9.Be2 0-0 10.0-0 d4 11.Nb5 d3 12.Bd3 Qd3 13.Nc7–+) 8...Nbd7 9.a3 Bg7 10.Be2 0-0 11.0-0 Nh5 12.Bg7 Kg7 13.Re1=; D) 7...Bg7 8.Bb5 (8.Be2 Nc6 9.Qa4 Nd7 10.Bb5 Nd4 11.c6 bc6 12.Bc6 Rb8 13.a3=+; 8.a3 0-0 9.Be2 d4 10.Nb1 d3 11.Bf1 Qd5 12.Qc1 Nc6 13.Nc3–/+; 8.Qa4 Nfd7 9.Be2 Nc6 10.Bb5 a5 11.Bc6 bc6 12.ba5 Ra6 13.Qb4=+) 8...c6 9.Be2 Nbd7 10.0-0 Qc7 11.d4 Nh5 12.Re1 0-0 13.b5=.

6.c5 g6 7.Qe2 A) 7...c6 8.f4 (8.Qe3 Bg7 9.Bd4 Nbd7 10.Be2 Qe7 11.f4 0-0 12.Nc3 Ne8 13.0-0=; 8.Bd4 Bg7 9.Qe3 Nh5 10.Be2 Nd7 11.f4 Bd4 12.Qd4 Qf6 13.Qf6=+; 8.Be5 a5 9.a3 Nbd7 10.Bd4 ab4 11.ab4 Ra1 12.Ba1 b5 13.Qd3=) 8...Bg7 9.Be5 Nbd7 10.d4 0-0 11.Nc3 b6 12.Rb1 b5 13.a4=; B) 7...Qe7 8.Nc3 (8.Qe3 Bg7 9.Nc3 0-0 10.a3 a5 11.Bb5 Qd8 12.d4 c6 13.Be2=; 8.Qd3 Bg7 9.Be2 a5 10.a3 0-0 11.Bc3 Nfd7 12.Bg7 Kg7 13.Qc3–/+; 8.b5 Bg7 9.Bd4 Nh5 10.Qe3 e5 11.Bb2 c6 12.d4 ed4 13.Qe7–/+) 8...Bg7 9.Qe3 Qd7 10.d4 Nc6 11.b5 Ne7 12.Be2 Nf5 13.Qd2=; C) 7...a6 8.Qd3 (8.Qd1 Bg7 9.Be2 0-0 10.0-0 Nc6 11.a3 Nd7 12.Bg7 Kg7 13.Nc3=+; 8.Nc3 Bg7 9.Qd3 0-0 10.a3 Nbd7 11.Qe3 Nh5 12.d4 Re8 13.Ne2=+; 8.a3 Bg7 9.Qd3 Nc6 10.Be2 Ne7 11.0-0 Nf5 12.Re1 0-0 13.Qc2=) 8...Nbd7 9.Be2 a5 10.a3 c6 11.Qe3 Bg7 12.0-0 Nh5 13.d4=; D) 7...a5 8.a3 (8.Qb5 Nbd7 9.a3 Ra7 10.Nc3 ab4 11.ab4 c6 12.Qd3 Ra1 13.Ba1=+; 8.Nc3 c6 9.a3 ab4 10.ab4 Ra1 11.Ba1 Bg7 12.Qd3 0-0 13.Be2=+) 8...c6 9.Qe3 Bg7 10.b5 Nbd7 11.Nc3 0-0 12.d4 Re8 13.f4=.

6.c5 g6 7.Be2 A) 7...Bg7 8.a3 (8.Qc2 0-0 9.0-0 h6 10.Re1 d4 11.Qd3 Nd5 12.Qb5 Nc6 13.a3=+; 8.0-0 0-0 9.Re1 d4 10.Qc2 Nd5 11.Qe4 Nb4 12.a3 N4c6 13.Rc1–/+; 8.Qa4 Qd7 9.b5 Qe7 10.d4 Nh5 11.Bc1 Qf6 12.Be3 Nf4 13.Bf1=+) 8...Nbd7 9.0-0 c6 10.Re1 Qc7 11.d4 Nh5 12.Nc3 Nf4 13.Bf1=; B) 7...Nbd7 8.a3 (8.0-0 Bg7 9.Re1 0-0 10.Qc2 c6 11.a3 Qc7 12.Nc3 Qf4 13.g3=; 8.Nc3 a5 9.a3 Bg7 10.0-0 0-0 11.Re1 ab4 12.ab4 Ra1 13.Qa1=; 8.Qc2 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 Bg7 12.0-0 0-0 13.Re1=) 8...Bg7 9.0-0 c6 10.Re1 Qc7 11.d4 Nh5 12.Bc1 Nf4 13.Bf1=; C) 7...a5 8.a3 Bg7 9.0-0 0-0 10.b5 Nbd7 11.Qc2 Nh5 12.Bg7 Kg7 13.d4=.

6.c5 g6 7.g3 Bg7 (7...a5 8.Nc3 (8.a3 Bg7 9.Be2 0-0 10.b5 d4 11.Qc2 Qd5 12.0-0 Nfd7 13.d3–/+; 8.g4 Bg7 9.b5 0-0 10.Qe2 Nfd7 11.Bg7 Kg7 12.Qe3 e5 13.d4=+) 8...Nbd7 9.a3 Bg7 10.Bb5 c6 11.Be2 0-0 12.0-0 ab4 13.ab4=+; 7...Nbd7 8.Nc3 (8.Bb5 c6 9.Be2 Bg7 10.0-0 0-0 11.Re1 b6 12.Qc2 bc5 13.bc5=+; 8.Be2 Bg7 9.0-0 0-0 10.Re1 c6 11.Qa4 d4 12.f4 a5 13.Bf3=+; 8.Bg2 a5 9.a3 Bg7 10.0-0 ab4 11.ab4 0-0 12.Ra8 Qa8 13.Nc3=+) 8...Bg7 9.Be2 0-0 10.0-0 a5 11.a3 Ne5 12.Nb5 Nc6 13.Qb3=; 7...Be7 8.Be2 a5 9.a3 0-0 10.0-0 b6 11.Qc2 Na6 12.cb6 cb6 13.ba5=; 7...a5 8.a3=+) 8.Bg2 (8.Be2 0-0 9.0-0 d4 10.Qb3 Nd5 11.a3 Nd7 12.f4 Qf6 13.Rc1=+; 8.Bb5 c6 9.Be2 b6 10.0-0 bc5 11.bc5 Nbd7 12.d4 0-0 13.Nc3=; 8.Qa4 c6 9.Bg2 b5 10.cb6 Qb6 11.Nc3 Nbd7 12.Rb1 0-0 13.0-0=+; 8.Bb5 c6 9.Be2 a5=) 8...0-0=+ (8...Qd7 9.a3 a5 10.Nc3 0-0 11.0-0 d4 12.Na2 Nd5 13.f4=+) 9.0-0 c6 (9...Nbd7 10.Re1 a5 11.a3 Re8 12.Qe2 c6 13.Nc3=+; 9...Nc6 10.b5 Na5 11.Bc3=) 10.d3 (10.Re1 Nbd7 11.Bd4 h6 12.Nc3 a5 13.Qb3=+; 10.Nc3 Nbd7=) 10...a5 (10...b6 11.Bd4 Nbd7 12.Re1 e5 13.Be3=+) 11.a3 Nfd7 (11...Na6 12.Qd2 ab4 13.ab4=+; 11...ab4 12.ab4 Ra1 13.Ba1=+) 12.Bg7 (12.Nc3 Na6 13.Qd2 Bd4=) 12...Kg7=+ 13.Nd2 (13.Nc3=+; 13.Nc3 Qf6 14.Qd2 Na6=+) 13...e5 (13...Na6 14.Nb3 ab4 15.ab4 Nb4 16.Qd2=+) 14.Qb3 (14.d4 ab4 15.ab4 Na6 16.de5 Ne5=) 14...Na6=+ 15.Qb2 (15.Rfe1 Nc7=+) 15...Qf6 (15...Nc7 16.Rfe1=+) 16.Rab1 (16.Bh3 Rad8=) 16...Rfb8 (16...Nc7 17.Bh3 Ne6 18.Rfe1=+) 17.Bh3= Nf8 18.Rfe1 ab4 19.ab4 b6 20.Qe5 (20.cb6!? Rb6 21.Qc3= (21.Re5? Rb4 22.Qa1 Rb1 23.Nb1 Nb4 24.Qa8 Qe5–+; worse 21.Qe5 Qe5 22.Re5 Rb4=+)) 20...Qe5=+ 21.Re5 bc5 22.bc5? (better 22.b5!? Nb4 23.bc6 Nc6 24.Rb8 (24.Rd5? Rb1 25.Nb1 Ra1–+) 24...Ra1 25.Kg2 Ne5 26.Rb3=+) 22...Rb1–+ 23.Nb1 Nc5 24.Bf1 Ra1 (24...Nfe6 25.Kg2–+) 25.Re1 Nfe6 26.Be2?? (better 26.Kg2–/+; better 26.Kg2–+) 26...Nd4–+ 27.Kf1 Ncb3 28.Rd1 (28.f4 Nc2 29.Rd1 Rb1 30.Rb1 Nd2 31.Kg2 Nb1–+) 28…Rb1! (28...Rb1 29.Rb1 Nd2 30.Ke1 Nb1–+; 28...Rb1 29.Rb1 Nd2 30.Ke1 Nb1–+) 0–1. De Kruif,K (2010) – Mack,W (2255), Guernsey Open, 2010.

6.cd5 Nd5 7.b5 (7.a3 a5=) 7...Nd7 8.Be2 (8.Nc3 Nc3 9.Bc3 Qg5=) 8...N7f6 (8...Bd6 9.g3 0-0 10.Nc3=+) 9.d4 (9.Nc3!?=+) 9...Bb4-/+ 10.Nd2 0-0 11.0-0 (11.Rc1 Nf4 12.Bf1 N6d5-/+) 11...Qe7 (11...Nc3!? 12.Bc3 Bc3-/+) 12.Ne4=+ a5 13.g3 (13.ba6 ba6 14.Qa4 Rfb8=+) 13...a4 14.a3 Bd6 15.Qc2 Rfc8 16.Nc5 (16.Rfc1 c6=+) 16...b6 (better 16...c6!?-/+) 17.Na4= Ra5 18.Nc3 Rca8 (18...Ba3 19.Nd5 Nd5 20.Ba3 Ra3 21.Ra3 Qa3 22.Bd3=+) 19.Nd5 Nd5 20.Bd3 g6 21.Be4 (21.Qc6 Qd8=) 21...Ba3 (21...Rb5 22.Qc6 Qe8 23.Qc2-/+) 22.Rfe1 (22.Ba3 Ra3 23.Ra3 Ra3=) 22...Bb2=+ (worse 22...Rb5 23.Qc6 Rba5 24.Ra3 Ra3 25.Bd5+/-) 23.Ra5 Ra5 24.Qb2 Qd6 25.Qc2 (better 25.Rc1!?=+) 25...Rb5-/+ 26.Bd3 (26.Ra1 Ra5 27.Ra5 ba5-/+) 26...Ra5 (26...Nb4 27.Qc3 Rd5 28.Be4 Rd4 29.Ra1-+) 27.Qd2 (27.Be4 Qb4 28.Rd1 Nc3-+) 27...Kg7 (better 27...Nb4 28.Be4 c5-+) 28.Qg5? (28.Be4 Qb4 29.Qb4 Nb4-+) 28...Nf6 (better 28...Nb4 29.Qe3 Ra3-+ (29...Nd3?! 30.Qd3 e5 31.Re4-+)) 29.h4?? (29.Qe3-+) 29...Rg5 30.hg5 Nd5 31.f4 c5 (better 31...Nc3!? 32.Re3-+) 32.dc5 bc5 33.Be4 Nc3 34.Bf3 Qd2 35.Rd1 (35.Re3-+) 35...Nd1 36.Bd1 Qd1 37.Kg2 Qe2 38.f5 c4 39.f6 (39.fe6 c3 40.Kh1 Qf2 41.ef7 c2 42.f8Q Kf8 43.g4 c1Q) 39...Kf8 40.g4 c3 41.Kg3 (41.Kh2 c2 42.Kg3 c1Q 43.f3 Qg1 44.Kf4 e5) 41...c2 42.f3 (42.Kh3 c1Q 43.f4 Qce3 44.Kh4 Qe1) 42...c1Q 43.Kh4 (43.Kh3 Qf3 44.Kh4 Qe1) 43...Qg1 (43...Qh2) 44.f4 Qeh2 (44...Qgg4) 0-1. ClayPigeons (2165) - second_waltz (2185), Rated Bullet game, lichess.org, 2021.

7.a3 A) 7...Nbd7 8.Nc3 (8.Be2 b6 9.d4 Be7 10.0-0 a5 11.Bd3 ab4 12.ab4 Ra1 13.Ba1=+; 8.Qc2 Be7 9.Be2 Qc7 10.0-0 0-0 11.Re1 b6 12.d4 a5 13.cb6=; 8.d4 Be7 9.Bd3 0-0 10.0-0 Qc7 11.Re1 b6 12.Qc2 Rfb8 13.Nd2=) 8...Be7 9.Be2 b6 10.d4 0-0 11.0-0 Qb8 12.Qd2 Bd8 13.b5=; B) 7...Be7 8.d4 (8.Be2 b6 9.d4 a5 10.0-0 ab4 11.ab4 Ra1 12.Ba1 0-0 13.Re1=+; 8.Qa4 Nbd7 9.Be2 a5 10.Qc2 ab4 11.ab4 Ra1 12.Ba1 0-0 13.0-0=+; 8.Bd3 b6 9.cb6 ab6 10.0-0 Bd6 11.Re1 Qc7 12.h3 Nbd7 13.Nc3=+) 8...0-0 9.Bd3 b6 10.0-0 a5 11.Re1 ab4 12.ab4 Ra1 13.Ba1=; C) 7...a5 8.d4 (8.Qc2 Nbd7 9.Nc3 ab4 10.ab4 Ra1 11.Ba1 Be7 12.Be2 b6 13.d4=+; 8.Bd3 b6 9.Qc2 bc5 10.bc5 Nbd7 11.Bd4 e5 12.Be3 h6 13.0-0–+; 8.Be2 b6 9.Qc2 Be7 10.0-0 0-0 11.Re1 Nbd7 12.cb6 Qb6 13.ba5=+) 8...ab4 9.ab4 Ra1 10.Ba1 Be7 11.Bd3 0-0 12.0-0 b6 13.Qe2=; D) 7...b6 8.d4 a5 9.Bd3 Be7 10.0-0 0-0 11.Re1 ab4 12.ab4 Ra1 13.Ba1=.

7.Qc2 A) 7...b6 8.d4 Nbd7 9.Bd3 a5 10.b5 Rc8 11.bc6 Rc6 12.Bb5 Rc7 13.Bc3+=; B) 7...Be7 8.Be2 (8.Bd3 Nbd7 9.0-0 b6 10.cb6 Qb6 11.a3 c5 12.bc5 Bc5 13.Nc3=+; 8.a3 b6 9.cb6 ab6 10.Bd3 Bd6 11.0-0 Qc7 12.g3 Nbd7 13.Rc1=+; 8.f4 0-0 9.Be2 a5 10.a3 b6 11.0-0 ab4 12.ab4 Ra1 13.Ba1=+) 8...a5 9.b5 0-0 10.0-0 cb5 11.Bb5 Qc7 12.Rc1 Rc8 13.Qb3=; C) 7...Nbd7 8.d4 (8.a3 Be7 9.Be2 Qc7 10.0-0 Qf4 11.Re1 0-0 12.Qc3 Qh4 13.d3=; 8.Be2 b6 9.d4 Be7 10.0-0 0-0 11.a3 a5 12.Nc3 ab4 13.ab4=; 8.Bd3 b6 9.cb6 Qb6 10.a3 c5 11.Qa4 d4 12.0-0 cb4 13.Rc1=+) 8...b6 9.Bd3 a5 10.b5 Rc8 11.bc6 Rc6 12.Bb5 Rc7 13.Bc3+=; D) 7...a5 8.a3 Nbd7 9.Nc3 ab4 10.ab4 Ra1 11.Ba1 Be7 12.Be2 b6 13.d4=+.

7.Nc3 A) 7...a5 8.a3 Be7 9.d4 b5 10.Bd3 ab4 11.ab4 Na6 12.Qb3 0-0 13.0-0=; B) 7...Be7 8.d4 (8.Be2 d4 9.Ne4 d3 10.Bf1 Qd5 11.Bf6 Bf6 12.Nf6 gf6 13.Qb1=+) 8...b6 9.Bd3 0-0 10.0-0 a5 11.a3 ab4 12.ab4 Ra1 13.Qa1=; C) 7...Nbd7 8.Be2 (8.d4 Qc7 9.Bd3 Be7 10.0-0 0-0 11.Re1 b6 12.Rb1 Rfb8 13.Qe2=; 8.a3 Be7 9.Be2 b6 10.d4 Rb8 11.Ra2 0-0 12.0-0 Qc7 13.Re1=) 8...b6 9.d4 Be7 10.0-0 0-0 11.a3 Qb8 12.Qd2 Bd8 13.b5=; D) 7...b6 8.d4 Be7 9.Bd3 0-0 10.0-0 a5 11.a3 Nbd7 12.Re1 ab4 13.ab4=.

7.d4 b6 8.Qc2 (8.a3 a5 9.Bd3 Be7 10.0-0 0-0 11.Nc3 Nbd7 12.Qe2 ab4 13.ab4=; 8.Qa4 Be7 9.Bd3 0-0 10.0-0 a5 11.b5 bc5 12.dc5 cb5 13.Qh4–/+; 8.Bd3 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 Be7 12.0-0 Qc7 13.Nc3=) 8...Be7 9.Bd3 a5 10.b5 0-0 11.a4 cb5 12.ab5 Qc7 13.c6=.

7.d4 Nbd7 8.Bd3 (8.Nc3 Qc7 9.Bd3 Be7 10.0-0 0-0 11.Re1 b6 12.Rb1 Rfb8 13.Qe2=; 8.Nd2 Be7 9.Bd3 Nh5 10.g3 Nhf6 11.0-0 0-0 12.a3 b6 13.Re1=; 8.Be2 Be7 9.0-0 0-0 10.Re1 b6 11.Bd3 a5 12.a3 ab4 13.ab4=+) 8...Be7 9.0-0 0-0 10.Re1 b6 11.Nc3 a5 12.a3 ab4 13.ab4=.

7.d4 g6 8.Nc3 (8.Be2 Bg7 9.0-0 Nbd7 10.Re1 0-0 11.Bc1 a5 12.Qd2 b5 13.cb6=; 8.Nd2 Bg7 9.Bd3 Nh5 10.g3 Nd7 11.0-0 Qf6 12.Rb1 0-0 13.Re1=; 8.Bd3 Bg7 9.0-0 Nbd7 10.Re1 0-0 11.Qe2 Nh5 12.Qe3 Qf6 13.Bf1=) 8...Bg7 9.Bd3 Nfd7 10.Ne2 b6 11.Bc3 0-0 12.0-0 Qe7 13.a3=.

8.a3 0-0 9.Bd3 a5 10.ba5 Qa5 11.Bc3 Qa7 12.0-0 Na6 13.f4=.

8.Nc3 b6 9.Bd3 a5 10.a3 ab4 11.ab4 Ra1 12.Qa1 Nfd7 13.0-0=.

8.Nd2 b6 9.Qc2 0-0 10.a3 a5 11.Bd3 ab4 12.ab4 Ra1 13.Ba1=+.

8.Bd3 0-0 9.0-0 b6 (9...a5 10.Qe1=) 10.Re1 (10.Nc3!?+= is worthy of consideration) 10...a5 11.a3 ab4 12.ab4 Ra1 13.Ba1 bc5 14.dc5 White has a new backward pawn: b4. Black has a new protected passed pawn: d5 14...Qc8 15.Qe2 (15.Nd2 Nbd7=) 15...Qb7 16.Bc3 Nbd7 17.Qb2 Rb8 18.Qc2 (18.Qd2 d4 19.Bd4 Qb4+=) 18...h6 (18...d4 19.Bd4 Qb4+=) 19.f4 (19.Qd2 d4 20.Bd4 Qb4+=) 19...Qc7 (19...d4!? 20.Bd4 Qb4+=) 20.f5 (20.g3 d4 21.Bd4 Rb4=) 20...e5 21.f3 Ne8 22.Bd2 Bf6 23.Nc3 Qa7 24.Rb1 Nc7 25.Rb2 Rb4 26.Rb4+= Qc5 27.Kf1 Qb4+/– 28.Nd5 Nd5 29.Bb4 Ne3 30.Ke2 Nc2 31.Bc2 c5 32.Ba5 Kf8 33.Kd3 Ke7 34.Bc7 Bg5 35.Ba4 f6 36.Kc4 Be3 37.Kd5 Nf8 38.Bd6 Kf7 39.Ke4 Bg1 40.Bb3 Ke8 41.Ba4 ½–½. Larios Villa,FJ – Amigo Villalta,J, Sants op, 2001.

8.Bd3 Nbd7 9.0-0 0-0 10.Re1 b6 11.Nc3 a5 12.a3 ab4 13.ab4=.

6.b5 a6 7.a4 Bc5 8.d4 Bb4 9.Nd2 ab5 (9...c6 10.c3 (10.ba6 Na6 11.c3 Bd6 12.Bd3 0-0 13.0-0–/+) 10...Bd6 11.Bd3 0-0 12.0-0 ab5 13.ab5+=; 9...0-0 10.Bd3 c6 11.0-0 ab5 12.c3 Be7 13.ab5+=) 10.ab5 (10.c3 Bd6 11.ab5 Ra1 12.Qa1 0-0 13.Qa8+=) 10...Ra1 (10...Nbd7 11.Ra8 Qa8 12.c3 Bd6 13.Bd3+=) 11.Qa1 Bd2 (11...0-0 12.Bd3 c6 13.Qa4+=) 12.Kd2 0-0 13.Qa7 (13.Qa8+=) 13...Qc8 14.Bd3 c6 15.Ba3 Re8 16.Rb1 Nfd7 17.f4 g6 18.c3 cb5 19.Bb5 Rd8 20.Ba4 b6 (20...Qc4!?=) 21.Be7+/– Re8 22.Bd6 Nc6 23.Qc7 Qc7 24.Bc7 Rc8 25.Bc6 Rc7 26.Bd7 Rd7 27.Rb6 Ra7 28.Rb2 Kg7 29.Ke3 ½–½. Velker,Wim – Buss,Michael, corr ICCF TT/4/90–13, 2003.

6.b5 a6 7.a4 Bc5 8.Bg2 ab5 9.ab5 Ra1 10.Ba1 0-0 11.0-0 Nbd7 (11...c6 12.Qe2=+) 12.f4 Qa8 (12...c6 13.bc6 bc6 14.Be5=+) 13.Be5 Qa5 14.Qe2 (14.d4 Bb4 (< 14...Ne5 15.fe5 Nd7 16.dc5+/–) 15.Qe2 Ra8=) 14...Qa4 (14...Qb6 15.Rd1=+) 15.c4 (15.c3 c6=+) 15...Qc4 16.Qc4 dc4 17.Bc7 (17.Bf6 Nf6 18.Bb7 Rd8=+) 17...Nd5 18.Bd5 ed5 19.Nc3 Nf6 20.Be5 (20.Rc1 Re8=+) 20...Ne4 21.Ne4 de4 22.Rc1 Rc8 23.Kf1 Bb6 24.f3 f6 25.Bb2 (25.Ba1 ef3 26.d3 Ra8 27.dc4 Ra2=+) 25...ef3 26.d3 Rd8 27.dc4 Rd2 (27...Be3 28.Re1 Bc5 29.Bc3–/+) 28.c5=+ Bc5 29.Rc5 Rb2 30.Rc8 Kf7 31.Rc7 Kg6 32.Rb7 Rh2 33.b6 (33.g4 Rb2–/+) 33...Rb2–/+ 34.g4 h6 35.f5? (better is 35.Kg1!?–/+) 35...Kg5–+ 36.Rg7 Kf4 37.Rc7 (37.b7–+) 37...Kg3 (< 37...Rb6 38.Rc1–+; 37...Kg4?! 38.b7–+) 38.Rc1 Rh2 (39.Ke1 Rh1 40.Kd2 Rc1–+) 0–1. Eldridge,Michael – Buss,Michael, corr CCLA, 1994.

6.b5 a6 7.Qe2 Nbd7 =+.

6.b5 Bc5 7.Be2 =+.

6.b5 Be7 7.Bg2 Qd7 (7...a6 8.a4=+) 8.Qe2 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 0-0 12.0-0 c6 13.bc6 (13.Nc3 d4 14.Ne4 cb5=+) 13...bc6 (13...Nc6 14.Nc3=+) 14.d3 (14.f4 c5=+) 14...Qa7 (14...c5 15.c4=+) 15.Nd2 Nbd7 (15...Qa2 16.Nb3=) 16.c4 Rb8 (16...Qa3 17.f4=+) ½–½. Djukic,Zeljko – Despotovic,Momcilo, YUG–URS U20 Budva, 1967.

6.Qe2 a6 7.a3 c5 =+.

6.Bg2 Bb4–/+ 7.0-0 (7.Qe2 c6–/+) 7...0-0 8.Nc3 (8.Qe2 c6–/+) 8...c5 (8...Nbd7 9.Rb1–/+) 9.d3 (9.Re1 Nc6–/+) 9...Nc6–+ 10.Ne2 (10.Na4 Nd7–+) 10...Rb8 (10...d4 11.a3 Ba5 12.Bc1–+) 11.Nf4 (11.f4 d4–+) 11...Re8 (11...d4 12.Ne2–+) 12.c3 Ba5 13.Qc2 Qd7 14.Nh3 b5 15.Nf4 (15.Rfb1 c4–+) 15...Rec8 (15...c4 16.Rfd1–+) 16.Rad1 (16.Rfb1 Bc7 17.Ne2 c4–+) 16...b4 (16...d4 17.c4–+) 17.cb4 (better is 17.c4 Nd4 18.Bd4 cd4 19.Qb3–+) 17...cb4 (17...Nd4 18.Qd2 Bb4 19.Qe3–+) 18.Qe2 (18.Bf6!? gf6 19.Nh5–/+) 18...Bd8 (18...d4 19.Rc1–+) 19.Rc1 (19.Rfe1 Qd6–+) 19...a5 (19...Ne8 20.Nh5–+) 20.Rc2 (20.Bh3 Kh8–+) 20...Na7 (20...a4 21.Bh3 b3 22.ab3 ab3 23.Rc5–+) 21.Rfc1 Rc2 22.Rc2 Rc8 23.h3 Nb5 24.Qd2 Rc2 25.Qc2 Bc7 26.Bf6 Bf4 27.Bh4 Be5 28.f4 Bd4 29.g4 Nc3 30.Bf3 Qb5 31.Be7 a4 32.Bd6 b3 33.ab3 ab3 (34.Qb2 Ne2 35.Qe2 b2–+) 0–1. kehrsam – golly1, chessworld.net, 2007.

5.a3 Nbd7 6.c4 (6.Qe2 e6=) 6...e6 7.d3 (7.cd5 Nd5 8.Nc3 Nf4=) 7...c6 (7...c5 8.bc5 Bc5 9.d4=+) 8.Be2 Bd6 9.0-0 h5 (9...Qc7 10.h3=+) 10.Re1 (better is 10.c5 Bf4 11.Re1=) 10...Bh2?? (better is 10...dc4 11.dc4 Qc7=) 11.Kh2+- Ng4 (11...Qb8 12.Kg1+-) 12.fg4 (better is 12.Kg3 Qc7 13.f4 dc4 14.Bg4 (14.Bg7 Rg8–/+) 14...hg4 15.dc4+- (15.Kg4?! 0-0-0+=)) 12...Qh4 13.Kg1 hg4 14.f3?? (14.f4 g3 15.Bh5 Rh5 16.Qh5 Qh5 17.Nd2 Qh2 18.Kf1 Qh1 19.Ke2 Qg2 20.Kd1–+) 14...g3 15.Kf1 Qh1# 0–1. uno (1805) – guest694, ICC, 2003.

5.a3 e6 6.Be2 c5 7.bc5 Bc5 8.d4 Bd6 9.0-0 Qc7 10.Nd2 (10.h3!?=+) 10...Bh2-/+ 11.Kh1 Bd6 12.c4 dc4 13.Nc4 0-0 14.Nd6 Qd6 15.Rc1 Nc6 16.Re1 Rac8 17.d5 (17.Bd3 Rfd8-+) 17...Nd5 18.Bd3 Qf4 19.Be4 Qh4 20.Kg1 Nf4 21.Bc6 Rc6 22.Qd4?? (better 22.g3 Qg5 23.Rc6 bc6 24.Qd4-/+) 22...Qg5 (better 22...Ne2! 23.Re2 Rc1 24.Bc1 Qd4-+) 23.g3 Rc1 24.Bc1 Nh3 (better 24...Ne2! 25.Re2 Qc1 26.Kg2 Qa3-+) 25.Kg2+= Qh5 (25...Qa5!? 26.Bd2 A) 26...Qa3 27.Bb4 Qa4 28.Ra1+- (28.Kh3?! a5 29.Bc5 Qd4 30.Bd4 b5=+); B) 26...Qd8 27.Qd8 Rd8+=) 26.Rh1+/- Nf4 (26...Qd5!? 27.Qd5 ed5 28.Kh3 b6+/-) 27.Qf4+- (27.gf4?! Qg6 28.Kf1 Rc8+=) 27...Qg6 28.Qh4 h6 29.Qe4 Qf6 (29...Qe4 30.fe4 Rc8 31.Rd1+/-) 30.Bf4 (30.Qb7 a5+-) 30...Rc8 (30...b5 31.Rh5 Qe7 32.Qc6+-) 31.Be5 (31.Qb7 Rd8+-) 31...Qg6? (better 31...Qe7+/-) 32.Qg6 fg6 33.Re1 (33.Rd1 Rf8+-) 33...Kf7 34.Bf4 (34.Rd1!? Rc5 35.Bb8 Rd5+-) 34...Rc2? (better 34...g5!? 35.Be5 b5+-) 35.Be3 1-0. muhammadaudii (1995) - DenisZh (2005), Rated Bullet game, lichess.org, 2020.

5.b5 e6 6.a4 c5 7.c4 d4 8.Be2 e5 (8...Bd6 9.0-0=+) 9.d3 Bd6 10.Nd2 0-0 11.0-0 Nbd7 12.Re1 Nh5 (12...Bc7 13.Nb3=) 13.g3 f5 14.f4 Nhf6 15.fe5 Ne5 16.Nf3 Re8 17.Ne5 Re5 18.Bf1 Re1 19.Qe1 Qe7 (19...Qd7 20.Bg2=) 20.Bg2 (20.Qe7 Be7 21.Bg2 Rb8+=) 20...Re8= 21.Qe7 Re7 22.a5 (22.Kf1 Ng4 23.h3 Ne5=) 22...b6 (22...Re2!? 23.Ba3 b6 24.ab6 ab6=) 23.ab6 ab6 24.h4 (24.Kf1 Kf7=) 24...Re2 25.Ba3 (25.Bc1 Re1 26.Bf1 f4 27.gf4 Ng4=) 25...Ng4 (better 25...Rd2!?-/+) 26.Bf3 Rd2 (26...Rc2 27.Bc1 h5 28.Bg4 fg4 29.Kf1+=) 27.Rd1 (better 27.Bc1!? Rd3 28.Bd5 Kf8 29.Bg5+/-) 27...Rd1 28.Bd1 Ne5 29.Be2 f4 30.Bc1 fg3 31.fg3 Nf7 32.Kg2 Kf8 33.Bf3 Ne5 34.Be4 g6 35.Bf4 Ke7 36.Kh3 Nf7 37.Bd2 Kf6 38.g4 h5 39.g5 Kg7 40.Be1 Be5 41.Bd5 Nd6 42.Bf2 Nf5 43.Be4 Ne3 44.Bf3 Nc2 (44...Kf7 45.Be1=) 45.Be2 (45.Bg3 Bg3 46.Kg3 Ne3=) 45...Ne3 46.Be3 (46.Bf3 Bd6=) 46...de3 47.Kg2 Kf7 48.Kf3 (48.Bf3 Kg8=+) 48...Bd4 49.Ke4 Ke6 50.Bf3 Kd6 51.Be2 Be5 52.Bf3 Bg3 53.Ke3 Bh4 54.Kf4 Ke6 (54...Be1 55.Be4 Bd2 56.Kg3 Bg5 57.Bg6 h4 58.Kg4=+) 55.Be4= Kf7 56.Bd5 Kg7 57.Be4 Bf2 58.Bg2 Bd4 59.Bh3 (59.Ke4 h4=) 59...h4 (59...Bc3 60.Ke3=+) 60.Bg4 Kf7 61.Bf3 (61.Bc8 Bc3=) 61...Ke7 (61...h3 62.Kg3 Be3 63.Bd5 Kg7 64.d4 cd4 65.c5=) 62.Kg4 Kd6 (better 62...Bf2!?=) 63.Kh4+= Ke5? (better 63...Ke6!?+=) 64.Be4+- Be3 65.Kg4 Bd4 66.Bg6 Be3 67.Be4 Bg5?? (better 67...Ke6+-) 68.Kg5 Kd4 (68...Kd6 69.Kf4 Ke6 70.Bd5 Kd6 71.Bg8+-) 69.Kg6 (better 69.Kf6 Kc3 70.Ke7 Kd4+-) 69...Ke5 70.Kf7 Kd6 71.Kf6 (71.Ke8 Ke5 72.Kd7 Kf6+-) 71...Kd7 72.Ke5 Ke7 73.Kd5 (73.Bf5 Ke8 74.Kd5 Ke7+-) 73...Kd7 74.Bf5 Kc7 75.Be6 Kb7 Plans Bg4 (75...Kb7 76.Kd6 Kb8 77.Kc6 Ka8 78.Kc7 Ka7 79.d4 cd4 80.c5 bc5 81.Bc4 Ka8 82.b6 d3 83.Bd5). BeepBeepImAJeep (2610) - Amin_Cheraghi (2535), lichess.org, 2018.

5.b5 e6 6.a4 Bd6 7.c4 0-0 8.Be2 dc4 9.Bc4 Nbd7 10.0-0 e5 (10...c6 11.bc6 bc6 12.Qc2=+) 11.Be2 (11.Re1 c6=) 11...Qe7 12.d4 ed4 13.Bd4 Be5 14.Nc3 Bd4 15.Qd4 Nc5 16.Rfe1? (16.Qc4 a6=) 16...Rfd8?? (better 16...Nb3 17.Qd1 Na1 18.Qa1 Rad8-+) 17.Qh4 Nd5 18.Qe7 Ne7 19.Bc4 Nf5?? (19...Kf8 20.Ne4 Ne4 21.fe4=) 20.Ne4?? (20.Re5 Na4 21.Ra4+- (21.Rf5?! Nc3 22.Rf7 a6 23.Rc7 Kh8+-; 21.Na4?! Nd6 22.Bd3 c6+-)) 20...Ne4= 21.fe4 Nd6 (better 21...Nd4!? 22.Red1 c5=) 22.Bd5+/- Rab8 23.Rac1 (better 23.Rad1+/-) 23...b6?? (better 23...Rd7!?+=) 24.g4 (better 24.Rc7 Rbc8 25.Ra7+-) 24...Rd7 25.e5 Nc8 (25...Nb7 26.Bb7 Rb7 27.Red1 Rd1 28.Rd1+/-) 26.Bb3 Re7 27.e6 fe6 28.Re6 Kf8 29.Re7 Ke7? (29...Ne7 30.Rc7 Ra8+-) 30.Rc7 Kf6 31.Rf7 Kg6 (31...Ke5 32.Rg7 Nd6 33.Rh7+-) 32.h4 (better 32.Rf8!? a6+-) 32...Nd6 33.h5 (33.Rd7 Ne8+-) 33...Kg5 (33...Kh6 34.Ra7 Ne4+-) 34.Rg7 Kh4 35.Kg2 (35.f3 Kg3 36.Rd7 Nb7 37.Rh7 Na5+-) 35...Ne4 36.Bd5 (36.Rh7 Rf8 37.Rf7 Rf7 38.Bf7 Ng5+-) 36...Ng5 37.f4 Rd8 (37...Nh3 38.Kf3 Rf8 39.Rf7 Ng1 40.Ke3 Rf7 41.Bf7 Kg4 42.Be6 Kg3 43.f5+-) 38.Rg5 (worse 38.fg5 Rd5 39.g6 h6+-) 38...Re8 (38...h6 39.Re5 Kg4 40.Bf3 Kf4 41.Re4 Kf5+-) 39.Re5 (better 39.h6 Re5 40.fe5 Kg5+-) 39...Rc8 40.Bc6 Rd8 41.Rd5 (better 41.Bf3 h6 42.g5 hg5 43.Rg5 Rd2 44.Kg1+-) 41...Rf8 (41...Rd5 42.Bd5 Kg4 43.Be4+-) 42.Rd3 (42.Kf3 h6 43.Rd1 Rf4 44.Kf4 a6 45.Rh1) 42...Rf4 43.Rh3 (43.a5 Rg4 44.Kf2 ba5+-) 43...Kg5 44.Bf3 Ra4 45.Rh1 Ra2 46.Kg3 Ra3 (46...Ra5 47.h6 Ra4 48.Rh5 Kg6 49.Bd5+-) 47.Rd1 Kf6 48.Rd6 Ke5 49.Rc6 Kd4 50.Rc7 Ke3 (50...h6+-) 51.Rh7 Kd2 (51...Kd4 52.h6 Rc3 53.Rd7 Ke5 54.Ra7+-) 52.h6 Kc3 (52...Re3 53.Ra7 Re8+-) 53.Rd7 Kb4 54.h7 Rd3 55.Rd3 Kb5 (55...Kc4 56.Rd7 Kb5 57.h8Q Ka5 58.Qc3 Ka6 59.Qb4 b5 60.Rd6) 56.Rd5 (56.h8Q Ka5 57.Ra3 Kb5 58.Qc3 a5 59.Be2) 56...Kb4 57.h8Q (57.h8Q Kc4 58.Qd4 Kb3 59.Rb5 Kc2 60.Be4 Kc1 61.Rb1) 1-0. BeepBeepImAJeep (2440) - akiba182 (2320), lichess.org, 2019.

5.b5 e6 6.Be2 Bd6 7.0-0 0-0 8.c4 dc4 9.Bc4 Nbd7 10.Nc3 Nb6 11.Qb3 (11.Be2 Bc5=) 11...Nc4=+ 12.Qc4 Qe7 13.a4 Rfd8 14.d4 (14.Ne4 Nd5=) 14...Rac8 15.Rfc1 c6 16.Ne4 Nd5 17.Nd6 Qd6 (worse 17...Rd6 18.Ba3+-) 18.Qc5 h6 (18...Qc5 19.Rc5 Nf4 20.bc6 bc6 21.Rd1=+) 19.Qa7 (19.Qd6 Rd6 20.g3 Nf6=) 19...cb5 20.Rc8 (worse 20.Qb7 Rc1 21.Rc1 ba4–/+) 20...Rc8 21.ab5 (21.Qb7 Rb8 22.Qa7 ba4=) 21...b6 (21...Qb4!? 22.Ba3 Qb5=+) 22.Qa4= Qc7 23.Qa3 Qf4 24.Qd3 Nb4 25.Qf1 Qd2 26.Bc1 Qd4 27.Be3 Qd6 28.h3 Nd5 29.Qd3 Qb4 30.Ra6 The isolani on b6 becomes a target 30...Qd6 31.Rb6 Rc1?? (31...Nb6 32.Qd4 Double attack (32.Qd6 Pinning; 32.Qd6 Deflection; 32.Qd4 Decoy)) 32.Bc1+- Qb6 33.Be3 Qa5? (better 33...Ne3 34.fe3 f5+-) 34.b6! Ne3 (34...Nb6 35.Qd8 Double attack (35.Qd8 Decoy)) 35.Qd8 (35.fe3?! Qb6 36.Kf2 f5=; 35.Qe3?! Qb4+-) 35...Kh7 36.fe3 Qa1 (36...e5+-) 37.Kh2 Qe5 38.f4 Qe3 39.Qc7 h5 (39...e5 40.fe5 Qf4 41.Kg1 Qe3 42.Kh1 Qe1 43.Kh2 Qa5 44.Qc2 g6+-) 40.b7 h4 41.Qe5 Qg3 42.Kg1 f6 43.Qh5 (43.Qh5 Kg8 44.b8Q) 1–0. guest774 – HarrySTruman, chessclub.com, 2019.

5.b5 g6 6.a4 Bg7 7.c4 0-0 8.Be2 dc4 9.Bc4 Nd5 10.d4 (10.Bg7 Kg7 11.Bd5 Qd5=) 10...c5! 11.0-0 (11.dc5 Bb2 Pinning (11...Bb2 Deflection)) 11...Nf4 (11...Nb6 12.Bd3=+) 12.g3 Nh5 13.Qb3 cd4 14.Nd2 Nd7 15.f4 Nc5 16.Qd1 d3 17.Bg7 Kg7 (17...Ng7 18.Nb3 Nge6 19.Ra3=+) 18.Nf3 (18.Nb3 Rc8 19.Nc5 Rc5 20.Bd3 Rd5=) 18...Nf6 19.Ne5 (19.Qb1!?=+) 19...d2-/+ 20.Nf3 Nfe4 21.Qe2 Qa5 (21...Qd6 22.Qe3-/+) 22.Bd5 f5 (22...Nf6 23.Qe7 Nd5 24.Qc5=) 23.Be4 Ne4 (worse 23...fe4 24.Nd2 (worse 24.Qd2 Qd2 25.Nd2 Rad8=) 24...Qb4 25.Rfe1+/-) 24.Rfd1 (24.Ng5 Ng5 25.fg5 Rad8=+) 24...Rad8-/+ 25.Ra2 Nc3 26.Qe7 Kh6?? (better 26...Rf7 27.Qe5 Kg8 28.Rad2 Nd1=) 27.Qg5 (better 27.Ng5 Rd7 28.Qd7+-) 27...Kg7+= 28.Rdd2 (28.Rad2 Rd2 29.Qe7 Rf7 30.Qe5 Kh6 31.Rd2 Na4+-) 28...Na2 (28...Rde8 29.Ra3 Qb4=+ (29...Na4? 30.Rd4+-)) 29.Ra2?? (better 29.Qe7 Rf7 30.Qd8 Qd8 31.Rd8+/-) 29...Rd1 30.Kg2 Qd8 31.Qd8 Rfd8 32.Rc2 R8d7 33.Ne5 Re7 34.Kf3 Ra1 35.Rc4 Ra3 36.Kg2 a6 37.h4 ab5 38.ab5 Rb3 39.Rc5 b6 40.Rd5 Rc7 41.Nc6 Rb2 42.Nd4 (42.h5=+) 42...Rc3 (42...Ra7 43.Rd6 Raa2 44.Kf3 Rf2 45.Ke3-+) 43.Ne6 (43.Rd6!?=) 43...Kf7 (43...Kh6 44.Nd4-/+) 44.Nd4 (44.Ng5 Ke7 45.Re5 Kd6 46.Re6 Kc5 47.Rc6 Kb4 48.Rb6 Rcc2=+) 44...Kf8 (44...Rd3 45.Rd7 Ke8 46.Rd5-+) 45.Rd8 (45.Rd7!?=+) 45...Ke7-/+ 46.Rb8 (46.Rh8 Rc4 47.Rh7 Kd6-+) 46...Rd3 (better 46...Kd6!?-+) 47.Nc6=+ Kd6?? (47...Ke6 48.Rb6 Kd5-/+) 48.Ne5 (better 48.Rd8 Kc7 49.Rd3 Rb5 50.Ne5+-) 48...Kc5?? (better 48...Rdd2 49.Nc4 Kc7-+) 49.Nd3+- Kc4 50.Nb2 Kb5 51.Nd1 1-0. BeepBeepImAJeep (2710) - VoinG (2510), lichess.org, 2020.

5.b5 g6 6.a4 Bg7 7.c4 0-0 8.Be2 dc4 9.Bc4 Nbd7 10.0-0 Nb6 11.Be2 Nbd5 12.d4 a6 13.Nd2 ab5 14.ab5 Qd7 15.g3 (15.Ne4 Qf5=+) 15...e6 16.Nc4 (16.Ne4 Ra1 17.Qa1 Rd8=+) 16...h5 (better 16...Qb5 17.Qc2 Rfd8-+) 17.Ne5 Qd6 18.Qb3 Nd7 (18...Qb4!? 19.Qb4 Nb4=) 19.Ba3+= Ra3 20.Qa3 Ne5 21.de5 Qe5 22.Bc4 Qg5 (22...Nb6 23.Rac1=) 23.Bd5 (23.Rac1!?+=) 23...Ba1= (worse 23...ed5 24.Rac1 d4 25.Rc7 Qb5 26.Re1+/-) 24.Bb7 Be5 (24...Qb5? 25.Ba6 Qb2 26.Ra1 Qa3 27.Ra3+-) 25.Bc6 Bd6 (25...Rd8 26.Qe3 Qf6 27.Qa7=) 26.Qa4 h4 27.Qh4 (27.f4!? Qg4 28.Qe4+=) 27...Qh4=+ 28.gh4 Rb8 29.Rd1 Kf8 30.Kg2 Ke7 31.h3 Rh8 32.Rd4 Rh5 33.Kf1 Rc5 34.Ke2 Re5 35.Kd3 Rc5 36.f4 Rh5 37.Bf3? (better 37.Kc4!?=) 37...Rh4 (37...Rb5 38.Rc4-+) 38.Bg2-/+ Rf4 (38...Rh5 39.Bc6-/+) 39.Rf4=+ Bf4 40.Ke4 Bd6 41.f3 (41.Ke3 Bc5 42.Ke2 g5=+) 41...f5 42.Ke3 e5 43.Ke2 (43.Bf1 Bc5 44.Kd2 Kf6-/+) 43...Ke6 44.Bf1 Kd5 45.Kd3 Kc5 46.Ke3 Be7 47.Bd3 Bg5 48.Ke2 Kd4 (48...Bc1 49.Kd1 Be3 50.Ke2-/+) 49.Bb1 e4 50.fe4 fe4 51.Bc2 e3 (51...Bf4!?=+) 52.Bg6= Bh4 53.Be8 Bg5 54.Bc6 Bh4 55.Be8 Bg5 56.Bc6 Bh4 57.Be8 ½-½. BeepBeepImAJeep (2765) - pierrotbasilou (2520), lichess.org, 2020.

5.c4 dc4 6.b5 e6 7.a4 Nbd7 8.Bc4 Be7 9.Be2 0-0 10.0-0 Nd5 11.d4 Bf6 12.Nd2 c5 13.Ne4 cd4 14.Bd4 Bd4 15.Qd4 N7f6 16.Rfd1 Qe7 17.g3 Rfd8 18.Qb2 Ne4 (18...Rac8 19.Rac1=+) 19.fe4= Nf6 20.Bf3 Rac8 21.e5 Nd5 22.Rac1 b6 (better 22...Rc1!? 23.Rc1 a6+=) 23.Rc8+/- Rc8 24.Bd5 ed5 25.Rd5 h6 26.Qd2 Kh7 27.Kg2 Qb7 28.Qd3 Kg8 29.Qf3 Qe7 30.Qe4 Rc3 31.Rd4 g6 32.Qa8 (32.Rd6!?+/-) 32...Kg7+= 33.Qd5 (33.Rd5+=) 33...Rc2 (33...Rc5 34.Qd6 Re5 35.Qe7 Re7 36.h3+=) 34.Qd6 (better 34.Qe4 Rc5 35.f4+/-) 34...Qe8?? (34...Qb7 35.Kg1 Qf3 36.Qf6 Qf6 37.ef6 Kf6+/-) 35.Qf6+- Kh7 (35...Kg8 36.Rd8 Rc8 37.Re8 Re8 38.Qc6+-) 36.Rd8 Qd8 37.Qd8 1-0. BeepBeepImAJeep (2580) - Tinhau (2445), lichess.org, 2016.

5.c4 dc4 6.Bc4 e6 7.a3 g6 8.0-0 Bg7 9.d4 0-0 10.Nd2 Nc6 11.Nb3 Nd5 12.g3 Nb6 Increasing the pressure on the isolated pawn on d4 13.Rc1 Nc4 14.Rc4 Ne7 15.Qe2 Nd5 16.Na1 (16.Rc2 b6=) 16...c6 17.Rcc1 a5 18.b5 Qb6 19.a4? (19.bc6!? Rfc8 20.cb7 Qb7 21.Qd2-/+) 19...cb5-+ (19...Bd4?! 20.Bd4 Qd4 21.Qe4 Qe4 22.fe4-/+) 20.Qb5 (20.ab5!? Bd4 21.Bd4 Qd4-+) 20...Qb5 (20...Bd4?! 21.Qb6 Bb6 22.Nb3-/+) 21.ab5 Rfc8 22.Nc2 Rc4 23.Ne3 Rb4 24.Nd5 ed5 25.Bc3 Rc4 (25...Rb3 26.Ba1-+) 26.Ba1 (26.Bb2 Rac8 27.Rc4 Rc4-+) 26...Rac8 27.Rb1 Bd4 (27...a4!? 28.Rbe1-+) 28.Rfd1 Ba1 29.Ra1 b6 30.Rd5 R8c5 31.Rd8 Kg7 32.Rb8 Rb5 33.h4 (33.Rb7 Rc2 34.Re1 a4-+) 33...Rcb4 34.Kg2 Rb1 35.Ra3 R5b3 36.Ra4 Rb4 37.Ra3 R1b3 38.Ra1 Rc3 (38...a4 39.Rb7 Rc4 40.Rd1-+) 39.Rb7 (39.Rd1 a4 40.Rd7 Rc6-+) 39...Rc2 40.Rd1 Rbb2 41.Kg1?? (better 41.g4 Rf2 42.Kg3 Rg2 43.Kh3-+) 41...Rf2 42.Rb6 Rg2 (42...Rb6?! 43.Kf2 a4 44.Ra1-+) 43.Kh1 Rh2 (43...Rb6?! 44.Kg2 a4 45.Ra1-+) 44.Kg1 Rbg2 (44...Rb6?! 45.Kh2 a4 46.Ra1-+) 45.Kf1 Rg3 46.Rd4 (46.Rd3 Ra2-+) 46...Rf3 47.Kg1 Ra2 48.Rb7 Rg3 49.Kh1 Rc3 50.Rd1 Raa3 (50...Rcc2 51.h5-+) 51.Ra7 Rh3 52.Kg2 Rhg3 53.Kh2 h5 (53...Rg4 54.h5 Rh4 55.Kg2 Rh5 56.Rdd7-+) 54.Rdd7 (54.Ra5 Rh3 55.Kg2 Ra5 56.Kh3 Ra7-+) 54...Rgf3 55.Kg2 Rf4 Black prepares the advance a4 56.Rdc7 a4 57.Rd7 Rb3 0-1. Timmermans,M (2375) - Erdos,V (2605), European Rapid (6), 2018.

5.c4 d4 6.b5 e5 (6...e6 7.Bd3=+) 7.d3 (better 7.Qe2!? Qd6 8.f4=) 7...Bb4-/+ 8.Nd2 0-0 9.Be2 Nbd7 (9...a6 10.a3 Bd2 11.Qd2 ab5 12.cb5-/+) 10.0-0 a5 (10...a6 11.f4=+) 11.a4 (11.f4 Re8=) 11...b6 (11...Nh5 12.Bc1=+) 12.Ne4 (12.f4 Re8+=) 12...Bc5 (12...Nh5 13.Bc1=+) 13.f4 Re8 (13...Ne4 14.de4 Re8 15.Qd3=+) 14.fe5 (14.Bf3 Rb8+=) 14...Ne5 (14...Ne4 15.e6 Re6 16.de4 Ne5=+ (worse 16...Re4 17.Bf3 Re6 18.Bd5+=)) 15.Nc5+= bc5 16.f4 Ned7 17.Bf3 Rb8 (17...Ra7 18.Re1+/-) 18.Re1 (18.Qd2 Re3+/-) 18...Nb6 (18...Re1 19.Qe1 Qe8 20.Qd2+/- (20.Qa5?! Qe3 21.Kh1 Qd3=+)) 19.Bc1 Re1 (better 19...Qd6!?+/-) 20.Qe1+- Qe8 21.Bd2 Qe1 22.Be1 Re8 23.Ba5 Re3 24.Bb6 cb6 25.a5 ba5 26.Ra5 g6? (26...Kf8 27.b6 Nd7+-) 27.b6 Re8 28.b7 (28.Rc5 Nd7 29.Rb5 Rb8+-) 28...Nd7 29.Ra8 Nb8 30.Bd5 Kf8 31.Kf2 (better 31.Ra5 Nd7+-) 31...Ke7 32.Ra5 Kd6 33.Rb5 Rd8 34.Kf3 f5 35.h3 Re8 36.g4 (36.Kf2 Nd7+-) 36...Rf8? (better 36...Re3!? 37.Kf2 fg4 38.hg4 Rd3 39.Rb6 Kd7+-) 37.Rb6+- Kc7 38.Re6 Kd7 39.Re5 Kd6 (39...fg4 40.hg4 Nc6+-) 40.gf5 gf5 41.Kg3 Kd7 42.Kh4 h6 43.Bf3 (better 43.Re6 Rh8+-) 43...Rg8 (43...Na6+-) 44.Rd5 Ke6 45.Rc5 Kd6 (45...Rd8 46.Kh5 Ke7 47.Rf5+-) 46.Rf5 (46.Rc8 Rg7 47.Rb8 Rb7 48.Rb7 Kc5 49.Rb5 Kd6 50.c5 Ke7 51.Rb7 Kf6 52.c6 Ke6 53.Bd5 Kd6 54.Rd7 Kc5 55.c7 Kb4 56.c8Q Ka3 57.Qb8 Ka4 58.Ra7) 46...Ke6 (46...Ke7 47.Re5 Kf6 48.c5+-) 47.Rh5 Ke7 48.Rh6 Kf7 (48...Nd7+-) 49.Bd5 Ke7 (49...Kg7 50.Kg5 Re8+-) 50.Bg8 Kd7 51.Bd5 Kc7 Black threatens to counter with c5 52.Rh8 Kb6 53.Rb8 Ka7 (53...Ka5 54.Ra8 Kb4 55.b8Q Kc3 56.Ra2 Kd3 57.Qb3) 54.Ra8 Kb6 55.b8Q Kc5 56.Qa7 (56.Ra5) 56...Kd6 57.Qb6 (57.Rd8) 57...Ke7 58.Qe6 1-0. BeepBeepImAJeep (2775) - pierrotbasilou (2515), lichess.org, 2020.

5.c4 e6 6.b5 dc4 7.Bc4 Nbd7 8.0-0 Be7 9.Be2 0-0 10.a4 Nd5 11.d4 Bf6 12.Nd2 N7b6 13.Ne4 Be7 14.Re1 Nf6 15.Qc2 Nbd5 16.Rac1 Rc8 17.Qb3 b6 18.Nd2 Qd7 19.Nc4 Bd6 20.Ne5 Qe8 21.g3 Nd7 22.Nc6 Ra8 23.f4 g6 24.Bf3 N7f6 25.Ne5 a6 26.Nc6 ab5 27.ab5 h5 28.h4 Qd7 29.Ra1 Qc8 30.Ra4 Qb7 31.Rea1 Ra4 32.Qa4 Qc8 33.Ba3 Ba3 34.Qa3 Qd7 35.Qb3 Qd6 36.Ra7 Ne7 37.Ne7 Qe7 38.Qc4 Rc8 39.Bb7 Rd8 40.Bf3 Rc8 41.Kg2 Qd6 42.Bb7 Rd8 43.Bf3 Rd7 44.Ra8 Kg7 45.Rc8 Qd4 46.Qd4 Rd4 47.Rc7 Rb4 48.Bc6 Nd5 49.Rb7 Kf6 50.Bd5 ed5 51.Rb6 Kf5 52.Rb7 Ke4? (52...f6 53.Kf3+=) 53.Rf7 d4 54.Rf6 (54.Re7!? Kd5 55.Kf3+/-) 54...d3+= 55.Rg6?? (better 55.b6 Kd4 56.Rd6 Kc3 57.Rc6 Kd4 58.Rg6=) 55...d2-+ 56.Re6 Kd3 57.Re3 Kc2 (better 57...Kd4 58.Re7 Rb5 59.Rd7 Rd5-+) 58.Re2 Rb5 59.Rd2?! (59.g4 Kd3 60.Rd2 Kd2 61.gh5 Rh5-+) 59...Kd2 60.Kf3 (60.g4 Kc3 (60...hg4?! 61.Kg3-+) 61.gh5 Rh5-+) 60...Kd3 61.g4 Kd4 62.Kg3?? (62.gh5 Rh5 63.Kg4-+) 62...Kd5 63.f3 (63.gh5 Ke6 64.Kg4 Kf6-+) 63...Ke6 (better 63...hg4 64.Kg4 Ke6-+) 64.g5 (64.Kf2 Rb2 65.Kg3-+) 64...Kf7 65.f5 Rf5 66.Kg2 Kg6 67.Kg3 Rc5 68.f4 (68.Kh2-+) 68...Rc4 69.Kf2 Kf5 70.Kg3 (70.g6 Rf4 71.Ke3 Rh4 72.Kd2 Rg4 73.Kc3 Rg3 74.Kc4 Rg6 75.Kb3 h4 76.Ka3 Rg3 77.Ka4 h3 78.Kb5 h2 79.Kc4 h1Q 80.Kc5 Rc3 81.Kb4 Rc2 82.Kb3 Qb1 83.Ka4 Ra2) 70...Re4 (70...Rf4 71.Kg2 Rh4 72.Kf1 Rg4 73.Ke2 h4 74.Kf3 h3 75.Kf2 h2 76.g6 h1Q 77.g7 Ke4 78.g8Q Rg8 79.Ke2 Rg2) 71.g6 (71.Kf3 Rf4 72.Ke3 Rb4 73.Kd2 Rh4 74.Ke3 Kg5 75.Kd3 Kf5 76.Kc3 Rg4 77.Kb3 h4 78.Kc3 h3 79.Kc2 h2 80.Kd3 h1Q 81.Ke2 Rg3 82.Kf2 Qh2 83.Ke1 Rg1) 71...Rf4 72.Kg2 (72.Kg2 Kg6 73.Kh2 Rh4 74.Kg3 Rg4 75.Kf2 h4 76.Ke2 Kf5 77.Kf3 Rg3 78.Ke2 Rg2 79.Kd3 h3 80.Kd4 h2 81.Kc5 h1Q 82.Kd6 Qd1 83.Kc5 Rc2 84.Kb5 Qb1 85.Ka4 Ra2; 72.g7 Rg4 73.Kf3 Rg7 74.Ke3 Rg4 75.Ke2 Rh4 76.Ke3 Re4 77.Kd2 h4 78.Kd3 h3 79.Kd2 h2 80.Kc3 h1Q 81.Kb3 Qf3 82.Kc2 Re2 83.Kc1 Qh1) 1-0. BeepBeepImAJeep (2725) - Fins (2665), Rated Bullet tournament QUIImUhE, lichess.org, 2015.

5.Bd3 e6 6.a3 Be7 (6...c5 7.bc5 Bc5 8.0-0=+) 7.0-0= 0-0 8.Re1 Nbd7 9.f4 c5 10.f5 c4 11.Bf1 Qb6 12.d3 Bc5 (12...cd3 13.Bd3 e5 14.c4=) 13.Qf3+= e5 14.Nc3 (14.dc4 Ne4 15.Re2 Rfc8+=) 14...Bd4 (14...cd3!? 15.Nd5 Nd5 16.bc5 Qb2 17.Qd5 Qd4 18.Qd4 ed4 19.cd3 Rfc8=) 15.dc4+= Ne4?? (better is 15...dc4 16.Bc4 Qc7+=) 16.Nd5+- Bf2 17.Kh1 Ng5 (17...Ng3 18.Qg3 Bg3 19.Nb6 Nb6 20.hg3+-) 18.Qe2 (18...Qd8 19.Qf2+-; 18.Nb6 Nf3 19.Nd7 Ne1 20.Nf8 Rf8+-) 1–0. Tonnicchi,Claudio (2015) – Buettner,Ulrich (1840), Leverkusen–ch, 2003.

5.d4 e6 6.a3 Nbd7 7.Nd2 Bd6 8.c4 c6 9.Bd3 0-0 10.0-0 Re8 11.g3 e5 12.Qc2 White prepares c5 12...ed4 13.Bd4 Be5 14.Nb3 White intends c5 14...Bd4 15.Nd4 Ne5 16.c5 Nd3 17.Qd3 Re5 18.Rae1 Qe8 19.Re5 Qe5 20.f4 Qe4 21.Rd1 Re8 22.Nf5 Qd3 23.Rd3 ½–½. combijack (1790) – toffie62 (1880), gameknot.com, 2011.

5.Qe2 c6 =.

5.Be2 Nbd7 6.0-0 e6 7.a3 g6 8.Nc3 Bg7 9.Re1 0-0 10.Bf1 c6 11.Ne2 Nh5 12.Bg7 Ng7 13.Rc1 a5 14.Ng3 ab4 15.ab4 Ra2 16.c3 b5 (16...Qg5-/+) 17.h4?? (better 17.Ra1 Ra1 18.Qa1=) 17...Qh4-+ 18.Ra1 Rfa8 19.Ra2 Ra2 20.Qb3 Ra4 21.Bd3 Nf5 22.Nf5 gf5 23.Bc2 Qg5 24.Rd1 Ne5 25.Qb2?? (better 25.Kh1-+) 25...Nf3 26.Kf1 Nd2 27.Kg1 Nc4 28.Qb1 Ra3 29.Bb3 (29.Rd3 Kf8 30.Qe1 Qf4-+) 29...Nd2 30.Qc1 (30.Qc2 Nf3 31.Kf1 Nh2 32.Kg1-+) 30...Rb3 (better 30...Nf3! 31.Kf1 Qc1 32.Rc1 Nd2 33.Ke2 Nb3 34.Rb1-+) 31.Rd2 Rb1! 32.Qb1 (32.Qb1 Qd2 Deflection) 32...Qd2 33.Qa1 Kg7 34.c4 (34.g3 e5 35.Qb1 f4 36.gf4 e4-+) 34...d4 35.cb5 cb5 36.Kh2 (36.g3 e5 37.Kf1 Qd3 38.Ke1 Qe4 39.Kd2 Qf3-+) 36...e5 37.f3 h5 38.Qb1 (38.Kg1 e4 39.fe4 fe4-+) 38...Kg6 (38...d3 39.Kg3 f4 40.Kh2 Qe2 41.Kh3 d2 42.Qg1 Qe1 43.Qe1 de1Q 44.Kh2 Kg6 45.g3 Qf2 46.Kh1 fg3 47.f4 Qh2) 39.Qa1 Qb4 40.Qa6 (40.Qa8 d3 41.Qg8 Kf6 42.Qd8 Ke6 43.Qe8 Kd5 44.Qf7 Kd4 45.Qf5 d2-+) 40...f6 (better 40...Kg7 41.Qa1 Qd2 42.Kg1-+) 41.Qe6 Qf8 42.Qb3 b4 43.g3 (43.Kh1 Qb8 44.Kg1 e4-+) 43...e4 (better 43...Qc8 44.Qd3 Qe6-+) 44.f4 (44.fe4 fe4 45.Qd5-+) 44...d3 45.Qb2 Qd8 46.Qd2 (46.Qb3 d2 47.Qd1 b3 48.Kg2 b2 49.Kh3 b1R 50.Qb1 d1Q 51.Qd1 Qd1 52.Kg2 e3 53.Kh2 Qf1 54.g4 hg4 55.Kg3 Qf2) 46...b3 47.g4 (47.Kh1 b2! 48.Qb4 d2 49.Kg2 d1Q 50.Qb2 e3 51.Qa2 Q8d2 52.Qd2 Qd2 53.Kh1 e2 54.Kg2 e1Q 55.Kf3 Qe4) 47...hg4 48.Kg3 (48.Kg2 b2! 49.Qb4 d2 50.Qb7 d1Q 51.Qa7 Q8d2 52.Qf2 Qf3 53.Kf1 Qdf2) 48...b2! 49.Qd1 (49.Qb2 d2 Passed pawn) 49...d2 50.Kh4 (50.Kh2 Qd3 51.Kg2 b1Q 52.Qb1 Qb1 53.Kf2 d1Q 54.Kg3 e3 55.Kg2 Qg1) 50...Qh8 51.Kg3 Qh3 (51...e3 52.Kg2 Qh3 53.Kg1 e2 54.Qd2 Qg3 55.Kh1 b1Q 56.Qd1 ed1Q) 52.Kf2 e3 53.Ke2 Qf3 (53...Qf3 54.Kd3 e2 55.Kd4 ed1Q 56.Kc5 Qc2 57.Kd6 Qfe4 58.Kd7 d1Q) 0-1. carlos78 (2345) - Metalhead_666 (2340), Rated Blitz game, lichess.org, 2015.

5.g3 e6=+ 6.a3 (6.Qe2 a6 (6...Bb4? 7.Qb5 Nbd7 8.Qb4+-) 7.b5 Bc5=+) 6...Nbd7 (6...Bd6 7.Be2=+) 7.f4 (7.Qe2 Bd6=+) 7...Be7 (7...Bd6 8.c4=+) 8.Bg2 0-0 9.0-0 c6 (9...c5 10.bc5 Bc5 11.Qe2=+) 10.d3 (10.f5 ef5 11.Qf3 a5=+) 10...a5–/+ 11.c3 Qc7 (11...Re8 12.Re1=+) 12.Nd2 Rfe8 (12...ab4 13.ab4 c5 14.b5=+) 13.Nb3 (13.Re1 b5=+) 13...b6 14.Qd2 (14.ba5 ba5 15.Rb1 Rab8=+) 14...Rad8 (14...c5 15.Rfe1–/+) 15.Rac1 (15.Rfb1 a4 16.Nd4 c5=) 15...Nb8 (15...c5 16.bc5 Nc5 17.Nd4=+) 16.Rfe1 (16.ba5 ba5 17.c4 a4=) 16...Na6 (16...a4 17.Na1=+) 17.Re2 (17.ba5 ba5 18.c4 a4=) 17...Bd6 (17...a4 18.Nd4=+) 18.Rce1 (18.ba5 ba5 19.c4 a4=) 18...Re7 19.Nd4 (19.Qe3 a4 20.Nd2 c5=) 19...Nb8 (19...c5 20.Nb5 Qd7 21.Nd6 Qd6 22.ba5 ba5 23.f5=) 20.c4 (20.Qe3 ab4 21.ab4 Rde8=) 20...ab4 (20...dc4 21.ba5 Red7 A) < 22.dc4 Bc5–/+ (< 22...ba5 23.Qc2+=); B) 22.Bh3 cd3 23.Qd3=) 21.ab4 Qc8 (21...dc4 22.dc4 Red7 23.Bh3+=) 22.cd5 (22.Nf5 ef5 23.Re7 Be7 24.Re7 dc4 25.Bf6 gf6=) 22...cd5 (22...Nd5 23.Bd5 cd5 24.f5+=) 23.Nf5 (23.f5 e5 24.Nb5 Qf5 25.Nd6 Rd6 26.Re5 Re5 27.Be5 Rd8+/–) 23...Red7 (23...Ree8 24.Nh6 (24.Nd6?! Rd6 25.f5 Nbd7+=) 24...Kf8 25.Bf6 gf6 26.f5+/–) 24.Nd6 Rd6 25.b5 Qc5+= 26.Be5 R6d7 27.Qb2 Ne8 28.f5+- Re7?? 29.Rc1 Nd7 30.Rc5 Nc5 31.Bd4 Rc7 32.Bc5 Rc5 33.d4 Rc4 34.fe6 fe6 35.Re6 Nf6 36.Rb6 Re8 37.Rc6 Re1 38.Bf1 Ra4 39.Rc1 Re4 40.b6 (40...Rad4 41.b7+-) 1–0. Mielke,Sven – Woller,Roland, Ryck–Open Greifswald, 1997.

5.a3 A) 5...Nf6 A1) 6.e3 Nbd7 (6...e6 7.Rg1 Nbd7 8.f4 g6 9.c4 dc4) 7.c4 dc4 8.Bc4 e6 9.Rg1 Nb6; A2) 6.e4 e6 (6...Nbd7 7.Qe2 e6 8.Rg1 Nh5 9.Qe3 Qc7) 7.e5 Nh5 8.d4 Nd7 9.Rg1 f6; B) 5...e6 B1) 6.Rg1 Nf6 7.f4 Rg8 8.e3 Nbd7 9.Nc3 Bd6; B2) 6.e3 Nf6 (6...Nd7 7.Rg1 Ngf6 8.f4 Rg8 9.Nc3 Bd6) 7.Rg1 Nbd7 8.f4 Rg8 9.c4 dc4; B3) 6.e4 Nf6 7.Qe2 Qc7 8.h3 Nbd7 9.Rg1 a5; C) 5...Nd7 C1) 6.Rg1 Ngf6 7.e3 Rg8 8.f4 a5 9.b5 e6; C2) 6.e3 Ngf6 7.Rg1 Qc7 8.f4 e6 9.c4 Rg8; C3) 6.d4 a5 (6...Ngf6 7.Nd2 a5 8.e4 ab4 9.ab4 Ra1) 7.b5 Ngf6 8.e4 de4 9.fe4 Ne4; C4) 6.e4 Ngf6 7.Qe2 e6 8.e5 Nh5 9.Qe3 a5.

5.e3 e6 (5...Nf6 A) 6.f4 g6 (6...e6 7.a3 Nbd7 8.Rg1 Rg8 9.Be2 Bd6) 7.Bf6 ef6 8.b5 Nd7 9.bc6 bc6; B) 6.a3 Nbd7 (6...e6 7.Rg1 Rg8 8.f4 Nbd7 9.Nc3 a5) 7.c4 e6 8.Rg1 Rg8 9.cd5 ed5; 5...Nd7 A) 6.Rg1 e5 (6...Ngf6 7.f4 g6 8.c4 dc4 9.Bc4 e6) 7.a3 Qh4 8.f4 f6 9.h3 ef4; B) 6.a3 Ngf6 7.Rg1 Rg8 8.f4 a5 9.b5 e6; C) 6.f4 Ngf6 (6...e6 7.a3 Ngf6 8.Rg1 Rg8 9.Nc3 Bd6) 7.Rg1 e6 8.a3 Rg8 9.Nc3 Bd6) 6.c4 (6.Rg1 Nf6 7.a3 Nbd7 8.f4 Rg8 9.Nc3 Bd6; 6.a3 Nf6 (6...Nd7 7.Rg1 Ngf6 8.f4 g6 9.c4 Rg8) 7.Rg1 Nbd7 8.f4 g6 9.c4 dc4) 6...Nf6 (6...Bb4?? 7.Bg7 dc4 8.Bc4+-; 6...dc4 7.Bc4 Nf6 8.a3 b5 9.Be2 a5) 7.Rg1 (7.cd5 ed5 8.Rg1 Qd6 9.f4 Qb4) 7...Nbd7 (7...Qd6 8.f4 Qb4 9.Bf6 gf6) 8.f4 (8.cd5 ed5 9.a3 Rg8) 8...g6 (8...Rg8 9.a3 dc4) 9.b5 (9.a3 Bg7) 9...Bg7 10.bc6 bc6 11.cd5 cd5 12.Bd4 ½–½. Damaso,Rui (2440) – Ribeiro,Fernando (2360), Caldas de Felgueira, 1998.

5.e4 A) 5...e6 A1) 6.a3 Nf6 7.Bd3 Nbd7 8.e5 Nh5 9.Bf1 f6; A2) 6.Qe2 Nf6 (6...Nd7 7.Rg1 Ngf6 8.a3 Nh5 9.Qe3 Qc7) 7.Rg1 Nbd7 8.a3 Nh5 9.Qe3 Qc7; A3) 6.Rg1 Nf6 7.Qe2 Qc7 8.h3 Nbd7 9.a3 a5; B) 5...d4 6.c3 e6 (6...dc3 7.Bc3 Nf6 8.d4 e6 9.Qc2 Nbd7; 6...e5 7.cd4 ed4 8.Qb3 Qf6 9.Na3 Bd6) 7.cd4 Nf6 8.Rg1 a5 9.b5 a4.

5.a3 a5 6.b5 a4 (6...Nf6 7.Nc3=) 7.e3 e5 8.Bc3 (8.d4 Nd7=) 8...Qe6 9.h4 (9.d4 Nd7=) 9...f6 (9...Nd7 10.d4=+) 10.Bh3= Qb6 11.Qe2 c6 12.bc6 Nc6 13.d4 (13.f4 Bd6=) 13...Bd6 14.Rg1 Kf7 (14...ed4 15.ed4 Kf8 16.Qe3=+) 15.f4= Kf8 (15...ed4 16.Qh5 Kf8 17.Be6=) 16.Qg4 Qc7 17.fe5 fe5 18.Qd7 (18.de5!? Ne5 19.Qf5 Nf6 20.Bd4+=) 18...Qd7= 19.Bd7 ed4 20.Bc6 bc6 (< 20...dc3 21.Bb7 Rd8 22.Bd5+= (22.Nc3?! Be5 23.Kd2 d4 24.Na4 de3 25.Ke3 Bd4 26.Kf3 Ba1 27.Ra1 Rd4+=)) 21.Bd4 Nf6 22.Nc3 (22.Nd2 Rb8=) 22...Kf7=+ 23.f3 Rhe8 24.Kf2 Nh5 25.e4 (25.Rg5!? g6 26.f4–/+) 25...c5–/+ 26.Bg7 Ng7 27.Nd5 Be5 (27...c4 28.Rge1–/+) 28.c3 Ne6 (28...Nh5 29.Rab1 Rab8 30.Rb8 Bb8 31.Rg5=+) 29.Rad1 (29.Ke3!?=+) 29...Rab8 30.Rb1 Rb3 (31.Rb3 ab3–+) 0–1. Wartig,Wolfgang – Woelfelschneider,Peter, corr SOK–91–77, 1991.

5.a3 Nd7 6.Nc3 c6 7.e3 e5 8.d4 ed4 9.Qd4 Ngf6 10.Rd1 a5 11.b5 Qe6 12.Qh4 Qf5 13.e4 (better is 13.bc6!? bc6 14.Qa4+=) 13...Ne5–/+ (13...Qf3?! 14.Rg1 Ne4 15.Ne4 Qe4 16.Qe4 de4 17.Rg4–/+ (17.Bg7? Rg8–+)) 14.Be2 Nf3 15.Bf3 Qf3 16.0-0 de4 (16...Ba3!? 17.Rd3 Qd3 18.cd3 Bb2+=) 17.Ne4 Ne4 (17...Qe4? 18.Rfe1 Qe6 19.Qc4+-) 18.Rd3 Be7 19.Qe7 Ke7 20.Rf3 Ng5 (20...Kf8 21.bc6 bc6 22.Re1+=) 21.Re1 Ne6 22.bc6 bc6 23.Bg7 Rhg8 24.Rg3 Rad8 25.f4 Kd6 26.Bc3 a4 27.Kf2 Rg3 28.hg3 Kc5 29.Re4 Rd1 30.Ra4 Rc1 31.Bb4 Kb5 32.Ra5 Kc4 33.f5 Rc2 34.Ke3 Ng5? (34...Nc7 35.Rc5 Kb3 36.Rc2 Kc2 37.Kd4+/–) 35.Rc5+/– Kb3 36.Rc2 Kc2 37.Kd4 (37.a4 h6 38.a5+-) 37...Kb3 38.g4 Ka4 39.Ke5 Kb5 40.Kf6 h6 41.Bf8 Ne4 42.Ke5 (42.Kf7!? Nf2+-) 42...Nf2+/– 43.Kf4 c5 44.Bh6 c4 (better is 44...Nd3!? 45.Ke4 Nf2 46.Kf3 Nd3+-) 45.g5+- c3? (45...Nd3 46.Ke4 Nf2 47.Kd4 Ng4+-) 46.g6 Nd3 47.Ke4 Nc5 48.Kd5 fg6 (48...Nd7 49.gf7 c2+-) 49.fg6 Nd7 50.g7 Nf6 51.Ke6 Ng8 52.Bg5 (52.Bg5 Ka4 53.Kf7+-) 1–0. Zach,Andreas (2270) – Rupp,Markus (2265), Oberliga Bayern, 2009.

5.a3 Nd7 6.e3 Nb6 7.f4= f6 (7...Nf6 8.Be5 Qd7 9.d4=) 8.Bd4 Nh6 9.Bh3 (9.Nc3 e6=) 9...e6 10.d3 (10.Qh5 Kd8=) 10...Nf5 (10...0-0-0 11.Rg1=) 11.Bf5 ef5 12.Nd2 0-0-0 13.Rg1 Kb8 (13...g6 14.Rc1=) 14.c3 (14.Bc5 Qd7=) 14...Qd7 (14...g6 15.Qc2=) 15.a4 (15.Bb6 ab6 16.Nf3 g6+=) 15...Bd6 (15...Qe6!?=) 16.Qf3 c6 17.Nb3 (17.Bb6 ab6 18.a5 ba5 19.Ra5 Rhe8+=) 17...Rhe8 (17...Nc8 18.b5=) 18.Kd2 (18.Bb6 ab6 19.Nd4 Ka7+=) 18...Qf7 (18...Kc7 19.b5=) 19.Bb6 (19.b5 Re7=) 19...ab6 20.a5 ba5 21.Ra5 Bc7 22.Ra3+/– Bb6 23.Nd4 Bd4+= 24.cd4 Kc7 25.Rga1 Qf8 26.b5 Ra8= 27.Ra8 Ra8 28.Ra8 Qa8 29.bc6 Kc6 30.Qh5 Qa2 (31.Ke1 Qb1 32.Kd2 Qb2 33.Ke1 Qc3 34.Ke2 Qc2 35.Ke1 Qc1 36.Ke2 Qc2 37.Ke1 Qc3 38.Ke2 Qc2=) =. Labahn,Wolfgang – Velker, corr ICCF TT–4–90 SF, 1995.

5.a3 Nd7 6.e3 e5 7.c4=+.

5.a3 Nd7 6.e3 e6 7.f4 a5 (7...Ngf6 8.Bd4=+) 8.Rg1 (8.b5 Ngf6=) 8...Ngf6 9.Nc3 (9.b5 h6=) 9...c6 (9...Rg8 10.Be2=) 10.Ne2 (10.b5 Rd8=) 10...Qc7 (10...Rg8 11.Ng3=) 11.Bc3 (11.b5 Rg8=) 11...Qd8 (11...ab4 12.ab4 Qd8 13.Ra8 Qa8 14.b5=) 12.Ng3 (12.f3 ab4 13.ab4 Ra1 14.Qa1 g6=) 12...ab4 13.ab4 g6 (13...Ra1 14.Qa1 Bd6 15.Qa7=) 14.Qb1 (14.Ra8 Qa8 15.b5 Qd8=) 14...Be7 15.Qb2 (15.Ra8 Qa8 16.Bd4 b6=+) 15...Rg8 (15...h5 16.Ra8 Qa8 17.Bd4=+) 16.Ra8= Qa8 17.Bd4 Ne4 (17...h5!?=) 18.Ne4+= de4 19.Be2 (19.Bg2 Qa4=) 19...b6 20.f3 (20.b5 c5 21.Bc3 h6=) 20...ef3 (better 20...c5 21.Bc3 ef3–/+) 21.Bf3+= Qa4 (21...Qc8 22.d3+=) 22.Ke2+- Qb5 (22...Bd6 23.Ra1 Qb5 24.d3+-) 23.d3 Bd6 (23...c5 24.bc5 Qb2 25.Bb2 Bc5 26.c4+-) 24.Ra1 ½–½. Gavritenkov,Sergei (2410) – Postypalskiy,Mihail (2320), Tula RUS, Efremenkov Mem, 2015.

5.c4 dc4 6.Na3 Nb6 (withdrawn Thau, 0–1). Thau,Oliver – Stroeher,Rudolf, DESC, 2001.

5.c4 Ngf6 =.

5.e3 Ngf6 6.a3 e6 (6...a5 7.Rg1=) 7.Rg1 (7.c4 a5=) 7...Rg8 (7...a5 8.c4=) 8.c4+= dc4 9.Bc4 c5 (9...a5 10.b5+=) 10.bc5 Bc5 11.d3 (11.f4 Rc8 12.Be2 Nd5+=) 11...a6 (11...b5 12.Bb5 Qa5 13.Nc3+=) 12.Nd2+= b5 (12...Rc8 13.Rc1+=) 13.Bb3 Bd6 (13...Rc8 14.Rc1+=) 14.f4 Rc8 (14...Kf8 15.a4+=) 15.a4 (15.Ke2 Nc5+=) 15...Bb4= 16.ab5 ab5 (16...Nc5 17.Bd4 ab5 18.Bc5 Rc5 19.d4+=) 17.Kf1 Bc3 (17...Nc5 18.Bc2+=) 18.Bc3 Rc3 19.d4 Rc8 (19...Qc7 20.Rg5+=) 20.Nf3 (20.Rg5!?+/–) 20...Qc7+= 21.Qd3 Qb7 (21...Qc3 22.Ke2+=) 22.Ne5 (22.Ng5 g6 23.Ke1+=) 22...h6? (better is 22...Ke7!?+=) 23.f5+/– Ne5 24.de5 Qd7?? (better is 24...Rd8 25.Qe2 Nd5+-) 25.Qd7+- Nd7 26.fe6 Ne5 27.ef7 Nf7 28.Ra7 (28.Rg4 Rf8 29.Re4 Kd8 30.Rd1 Kc7 31.Re7 Kb6 32.Bf7 Rc7 33.Rc7 Kc7+-) 28...Rc1 29.Ke2 Rg1 30.Bf7 Kf8 31.Bd5 b4 (31...Rg5 32.Ra8 Ke7 33.Bg8+- (33.Rg8?! Rd5 34.Rg7 Kd6+=)) 32.Ra8 Ke7 33.Rg8 1–0. Poleschi,Ricardo (2345) – Herraiz,Estanislao (2025), Eclipse, 2000. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3)

5.e3 Ngf6 6.c4 c6 7.Nc3 (7.cd5 cd5 8.Rg1 e6+=) 7...dc4= 8.Bc4 Ne5 9.Be2 (9.Bf1 Nd3 10.Bd3 Qd3=) 9...Nd3 10.Bd3 Qd3 11.Qe2 Qe2 (11...Qg6 12.b5=) 12.Ke2 e6 (12...Kd7 13.Rhg1+=) 13.b5+= c5 (13...Rc8 14.Rhg1=+; 13...Rb8 14.Rhg1+=) 14.Rhg1= Nd7 15.Ne4 f6 16.a4 (16.d3 Kf7+=) 16...Kf7 17.d4 (17.d3 Be7+=) 17...Rc8 18.Rac1 Be7 19.Rgd1 (19.Ba3 b6+=) 19...c4= 20.a5 Rc7 21.Rc2 (21.d5 ed5 22.Nc3 Rc5=) 21...Bb4 (21...b6 22.a6 Rhc8 23.Rdc1=) 22.Bc3 Ba3 (22...Be7 23.h4=) 23.Ra1 (23.d5 ed5 24.Rd5 Rd8=; 23.Rcd2 Re8+=) 23...Be7= 24.Ra4 (24.Bb2 b6+=) 24...f5 25.Nd2 Rhc8 26.Ba1 The pressure on c4 grows. c4 becomes the focus of attention (26.Bb4 Bb4 27.Rb4 c3=) 26...c3 27.Nb1 Nf6 28.Rc3 (28.Nc3? Nd5 29.Kd2 Bb4 30.Rb4 Nb4–+) 28...Nd5 29.Rc7 Rc7 (worse 29...Nc7 30.Rc4 b6 31.ab6 ab6 32.Rc6+-) 30.Kd1 Nb4 (30...Bd6 31.f4=) 31.Bc3 Nd3 (31...Nd5!? 32.Bd2 Kg6+=) 32.Ke2+- Nb2 33.Ra2 (33.Bb2?! Rc2 34.Kd3 Rb2=) 33...Nc4 34.Kd3 Nd6 (34...a6 35.b6 Rc8 36.Nd2 Nd2 37.Rd2+-; 34...g5 35.Rc2 Nd6 36.Na3+=) 35.Rb2 (35.Na3 Rd7+-) 35...Rc4 (35...Nc4 36.Rc2 a6 37.b6+-; 35...Bf6 36.Na3+-) 36.Nd2 Ra4 37.Bb4 (37.b6 ab6 38.Rb6 f4+-; 37.b6 a6+-) 37...Ke8 (37...Ne4 38.fe4 Bb4 39.ef5 ef5 40.Nc4+-; 37...Ne8!? 38.Be7 Ke7+=) 38.Bd6+- (38.f4 Ra1+-) 38...Bd6 39.Nc4 White prepares b6. White prepares the advance b6 (39.f4 Ba3 40.Ra2 e5 41.fe5 f4 42.ef4 Ra5+-) 39...Kd7 (39...Bh2 40.b6 a6 41.f4+-; 39...Ke7 40.b6 a6 41.f4+-) 40.h3 (worse 40.Nd6 Kd6 41.Rc2 Ra5=; 40.f4 Ra1+-) 40...Ra1 41.e4 (41.b6 a6+-; 41.Rc2 Bb8+=) 41...Bf4 (41...Rh1 42.e5 Be7 43.b6+=; 41...Rd1!? 42.Nd2 Ra1+=) 42.e5+- (42.b6 Rd1 43.Ke2 fe4 44.Kd1+-) 42...Bg5? (better 42...Rd1!? 43.Kc3 Rh1+=; better 42...Rd1!? 43.Kc3 Rc1 44.Rc2 Rb1+-) 43.b6+- a6? (43...ab6 44.Rb6 Rd1 45.Kc3 Rc1 46.Kb3 Rb1 47.Nb2 Kc8+-) 44.Nd6 Ra3 (44...Be7 45.Nb7 Rd1 46.Ke3 Re1 47.Kd2+-) 45.Ke2 (45.Kc4 Ra4 46.Rb4 Rb4 47.Kb4+=) 45...Ra5?? (better 45...Kc6+-; 45...Kc6 46.Rc2 Kd5 47.Nb7 Be7+-) 46.Nb7+- Rb5 (46...Bc1 47.Rc2 Ra1 48.Rc7 Ke8 49.Nd6 Kd8 50.Rc8 Kd7+-) 47.Rb5 (47.Nc5 Kc8 48.Rb5 ab5 49.Ne6 Be7+-) 47...ab5 48.Nc5 Kc8 49.Ne6 Bh6 (49...Bh4 50.Ng7 Kb7 51.Nf5+-) 50.Nc5 (50.d5 Kb7+-; better 50.d5 g6 51.d6 Kd7+-) 50...b4 (50...Bf4 51.Nd3 Bg5 52.Nb4+-; 50...Bg5 51.Kd3 Bh4 52.e6+-) 51.e6 (51.Kd3 g6+-) 51...Bg5 52.Kd3 b3 (52...Kd8 53.Kc4 Bd2 54.b7+-; 52...Kd8 53.Kc4 Bf4 54.Nd7+-) 53.Kc3 b2 54.Kb2 (54.Kb2 Be7 55.Kc3+-) 1–0. Kreuzer,Uwe – Richter, Germany, 1991.

5.e3 Ngf6 6.c4 e6 7.a3 c6 (7...dc4 8.Bc4 a5 (8...Nb6 9.Be2 Bd6 10.Nc3 a5 11.Nb5 ab4 12.ab4 Bb4 13.Nc7 Qc7=) 9.b5 Nb6 10.Bb3 Bd6 11.Nc3 0-0 12.d3 Rc8 13.f4 c6=; 7...a5 8.c5 Be7 (8...ab4 9.ab4 Ra1 10.Ba1 Be7 11.Nc3 0-0 12.d4 Re8 13.Rg1 c6=; 8...g6 9.Rg1 Bg7 10.d4 ab4 11.ab4 Ra1 12.Ba1 0-0 13.Nc3 Qe7=) 9.Nc3 0-0 10.Rg1 ab4 11.ab4 Ra1 12.Ba1 c6 13.h3 b6=+; 7...Bd6 8.c5 Be7 (8...Bf8 9.Rg1 g6 10.d4 Bg7 11.b5 c6 12.Nc3 Qa5 13.Be2 e5=) 9.Rg1 0-0 10.d4 c6 11.Bd3 a5 12.e4 ab4 13.ab4 Ra1=) 8.d4 (8.cd5 ed5 (8...cd5 9.Nc3 a5 10.Rg1 ab4 11.ab4 Ra1 12.Qa1 b6 13.Bb5 Rg8=) 9.Rg1 Rg8 10.f4 Nb6 11.Qc2 g6 12.b5 c5 13.a4 a5=; 8.Rg1 a5 (8...Rg8 9.cd5 ed5 10.Be2 Nb6 11.Qc2 g6 12.Bd4 h6 13.f4 Bg7=; 8...Nb6 9.c5 Nbd7 10.d4 Qc7 11.Rg2 a6 12.Bd3 g6 13.Nd2 Bg7=; 8...dc4 9.Bc4 Nb6 10.Be2 Rg8 11.Qc2 h6 12.b5 c5 13.Nc3 Be7=) 9.b5 Rg8 10.d4 cb5 11.cd5 Nd5 12.Bb5 Qh4 13.Qa4 Rd8=+; 8.c5 a5 (8...Qe7 9.d4 e5 10.Nd2 0-0-0 11.b5 ed4 12.Bd4 Nc5 13.bc6 bc6+=) 9.Nc3 b5 10.Rg1 h6 11.d4 ab4 12.ab4 Ra1 13.Ba1 Qc7=) 8...Bd6 (8...Be7 9.c5 0-0 10.Bd3 a5 11.b5 cb5 12.Bb5 Qc7 13.Nd2 Rfc8=; 8...Rg8 9.Nd2 Be7 10.e4 dc4 11.Nc4 h6 12.Qc2 Nb6 13.Ne5 Nbd7=; 8...dc4 9.Bc4 Bd6 10.Nc3 0-0 11.Ne4 Ne4 12.fe4 a5 13.b5 Rc8=) 9.Nd2 Qe7 (9...0-0 10.Bd3 e5 11.cd5 cd5 12.Rc1 a5 13.de5 Ne5=+) 10.f4 g6 11.Be2 (11.b5 cb5 12.c5 Bc7 13.Bb5 Ba5=) 11...h5 (11...h6 12.c5 Bc7 13.Qa4 g5=) 12.0-0 (12.b5 cb5 13.c5 Bc7=) 12...Ng4 (12...Rg8 13.Rc1 h4=) 13.h3 (13.c5 Bc7=) 13...Nh6 (13...Ngf6=) 14.Nf3 Nf6 15.Bd3 Nf5 16.Kg2 dc4 17.Bc2 (better 17.Bc4!? Nd5 18.Re1=+) 17...Nd5–/+ 18.Re1 0-0-0 19.Rc1 b5 20.Kh1 Nh4 21.Nh4 Qh4 22.Qf3 Kb7 23.Rg1 Rhg8 24.Rg5 Kb6 25.Rcg1 Ne7 26.a4 a6 (worse 26...Bb4 27.ab5 c3 28.Ba1=) 27.Rc5? (better 27.Ba3=+) 27...Bc5–+ 28.bc5 Kb7 29.Rb1 Nd5 30.Bc1 f5 31.Bd2 g5 32.Ba5 Rd7 33.ab5 ab5 34.Rg1 (34.fg5 Qg5 35.e4–+) 34...g4 35.Qg2 Rdg7 0–1. Cafferty,Bernard (2125) – Longson,Alexander (2280), Hastings ENG, Open, 2011. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.gf3 Nd7)

5.e3 Ngf6 6.c4 e6 7.c5 A) 7...Be7 A1) 8.d4 0-0 (8...h6 9.Rg1 g6 10.Nc3 c6 11.e4 Qc7 12.h3 Qh2 13.Rg2 Qh3=+; 8...Rg8 9.Bd3 h6 10.e4 Nh5 11.Bc1 Bg5 12.ed5 ed5 13.Nc3 Bc1=+; 8...g6 9.Nc3 a5 10.b5 Rg8 11.Rg1 h6 12.Bd3 Nh5 13.a3 Ndf6=) 9.Rg1 c6 10.Bd3 b6 11.Qc2 Qc7 12.Rg3 a5 13.a3 ab4=+; A2) 8.a3 0-0 (8...a5 9.Nc3 0-0 10.Rg1 ab4 11.ab4 Ra1 12.Ba1 c6 13.h3 b6=+; 8...c6 9.d4 0-0 10.Bd3 Qc7 11.Nd2 a5 12.e4 ab4 13.ab4 Nh5=+; 8...Rg8 9.Nc3 a5 10.Rg1 h6 11.f4 c6 12.Be2 ab4 13.ab4 Ra1=) 9.Rg1 a5 10.Nc3 ab4 11.ab4 Ra1 12.Ba1 c6 13.h3 b6=+; A3) 8.Rg1 0-0 (8...g6 9.a3 c6 10.f4 b6 11.cb6 ab6 12.Qc2 Qc7 13.Nc3 h6=) 9.d4 Kh8 10.Bd3 b6 11.a3 c6 12.Qc2 a5 13.cb6 Qb6=; B) 7...a6 B1) 8.Rg1 g6 (8...c6 9.Nc3 Qc7 10.f4 0-0-0 11.d4 h5 12.a4 Ne4 13.Ne4 de4+-; 8...a5 9.a3 g6 10.d4 ab4 11.ab4 Ra1 12.Ba1 Bg7 13.Bc3 Qe7=; 8...h6 9.Qa4 c6 10.d4 Qc7 11.Rg2 0-0-0 12.Nc3 g6 13.Qb3 Re8=) 9.Qc2 a5 10.a3 ab4 11.ab4 Ra1 12.Ba1 Bg7 13.d4 Qe7=+; B2) 8.d4 g6 (8...Rg8 9.Bd3 g6 10.e4 Nh5 11.Nc3 Nf4 12.Bf1 Bg7 13.Ne2 Ne2=; 8...Be7 9.Rg1 g6 10.Be2 c6 11.f4 b6 12.Nc3 Rb8 13.Rb1 bc5=; 8...h6 9.Bd3 g6 10.0-0 Nh7 11.f4 Qh4 12.f3 Nhf6 13.Qc2 c6=) 9.Bd3 Bg7 10.Qc2 Qe7 11.e4 c6 12.Nd2 e5 13.0-0-0 0-0-0=+; B3) 8.Nc3 g6 (8...Be7 9.Rg1 Rg8 10.d4 c6 11.e4 Nf8 12.a4 Qc7 13.e5 N6d7=; 8...a5 9.a3 ab4 10.ab4 Ra1 11.Qa1 b6 12.d4 c6 13.Qa4 Qb8=; 8...e5 9.d4 ed4 10.Qd4 c6 11.Na4 Qc7 12.Bd3 Be7 13.h3 0-0-0=) 9.Rg1 a5 10.a3 Be7 11.Be2 h6 12.f4 c6 13.h3 ab4=; C) 7...Rg8 C1) 8.Rg1 a5 (8...c6 9.d4 b6 10.a3 a5 11.b5 Qc7 12.cb6 Nb6 13.Qc2 Rc8=; 8...Be7 9.d4 g6 10.Bd3 c6 11.Nc3 Qc7 12.f4 b6 13.a3 Qb7=; 8...g6 9.d4 h6 10.Qa4 Be7 11.Nc3 c6 12.b5 cb5 13.Bb5 a6=) 9.a3 c6 10.Nc3 Be7 11.Be2 ab4 12.ab4 Ra1 13.Ba1 Qc7=+; C2) 8.a3 c6 (8...Be7 9.Nc3 h6 10.d4 g6 11.e4 c6 12.Bc1 h5 13.Be3 Qc7=; 8...a5 9.Nc3 ab4 10.ab4 Ra1 11.Ba1 Be7 12.d4 b6 13.c6 Nf8=; 8...g6 9.Qa4 c6 10.d4 Qc7 11.b5 Bg7 12.Nd2 e5 13.de5 Ne5=) 9.d4 Be7 10.Bd3 g6 11.e4 Nh5 12.Bc1 Bf6 13.e5 Bg7=+; C3) 8.Nc3 a5 (8...Be7 9.d4 Rf8 10.Rg1 Rg8 11.e4 h6 12.Bd3 Nf8 13.Bc1 g5+=; 8...g6 9.d4 h6 10.e4 Bg7 11.Bc1 c6 12.e5 Nh7 13.Bd3 Nhf8=; 8...h6 9.d4 Be7 10.e4 g6 11.Bc1 g5 12.Rg1 c6 13.e5 Nh5+=) 9.a3 ab4 10.ab4 Ra1 11.Ba1 c6 12.d4 b6 13.b5 bc5=+; C4) 8.d4 Qe7 (8...g6 9.Bd3 h6 10.Qa4 a6 11.Rg1 Bg7 12.e4 c6 13.e5 Nh5=; 8...h6 9.Bd3 g6 10.Qa4 Bg7 11.Nc3 c6 12.b5 Qc7 13.bc6 bc6=) 9.Qa4 a5 10.ba5 Ra7 11.e4 de4 12.Nc3 c6 13.Ne4 Qd8=; D) 7...a5 8.a3 ab4 (8...Be7 9.Rg1 Rg8 10.Nc3 h6 11.f4 c6 12.Be2 ab4 13.ab4 Ra1=) 9.ab4 Ra1 10.Ba1 Be7 11.Nc3 0-0 12.d4 Re8 13.Rg1 c6=.

5.e3 Ngf6 6.c4 e6 7.cd5 ed5 A) 8.a3 Bd6 (8...a5 9.ba5 Bd6 10.a6 ba6 11.Nc3 0-0 12.Qc2 c5 13.f4 d4=+) 9.Nc3 c6 10.f4 Qe7 11.Be2 Bf4 12.ef4 d4 13.Na4 d3=+; B) 8.Qb3 Bd6 (8...Rg8 9.f4 c6 10.Rg1 Qb6 11.b5 c5 12.d3 a6 13.ba6 Ra6=; 8...c6 9.Rg1 Qe7 10.a3 Qe6 11.Rg3 g6 12.b5 Bg7 13.Bh3 Qe7=) 9.f4 0-0 10.Rg1 Qe7 11.Bh3 Rfd8 12.Qc2 Bb4 13.Qc7 Rac8=+; C) 8.Rg1 c6 (8...Rg8 9.a3 Bd6 10.f4 Qe7 11.Be2 Qe6 12.Nc3 a6 13.Qb3 c6=; 8...a6 9.a3 Rg8 10.f4 Bd6 11.d3 Qe7 12.Be2 0-0-0 13.Bd4 h6=) 9.a3 Rg8 10.f4 Bd6 11.Be2 Qe7 12.Qc2 Qe6 13.b5 c5=+.

5.e3 Ngf6 6.c4 e6 7.Rg1 dc4 8.Bc4 Nb6 (8...Rg8 9.a3 Bd6 10.f4 Nb6 11.Be2 Qe7 12.Qc2 e5 13.Qf5 g6=) 9.Qb3 Rg8 10.d3 Bd6 11.f4 c6 12.Nd2 Be7 13.b5 Nc4=.

5.e4 Ngf6 =+.

5.f4 e6 6.e3 Bb4?? 7.Bg7 Qh4 8.Bh8 +-.

5.f4 e6 6.e3 c6 7.c4 Ngf6 (7...Bb4?? 8.Bg7 d4 9.Qf3+- (< 9.Bh8 de3 10.Qe2 ed2 11.Nd2 Qa5+-)) 8.a3 Bd6 9.d4 0-0 10.Nc3 Re8 11.Bd3 g6 12.0-0 a6 13.c5 Bf8 14.Qe2 Qe7 15.Bc1 Bg7 16.Qc2 Nh5 17.Kh1 f5 18.Ne2 Qh4 19.Bd2 Ndf6 20.f3 Nd7 21.Be1 Qe7 22.Ng3 Ndf6 23.Bc3 Qc7 24.Kg2 Bf8 25.a4 Ra7 26.b5 ab5 27.ab5 Ra1 28.Ra1 (< 28.Ba1 Ng3 29.hg3 cb5 30.Bb5 Ra8=) 28...Qg7 29.Ra7 Re7 30.bc6 bc6 31.Re7 Qe7 (< 31...Be7 32.Qa4+/–) 32.Qa4 Qd7 33.Qa8 Ne8 34.Ba6 Nc7 35.Qc8 Nf6 36.Qd7 Nd7 37.Bb7 (better is 37.Bc8!? Nb8 38.Ba5+/–) 37...Nb8+= 38.Ba5 Nb5 39.Ne2 Be7 40.Nc1 Kf7 41.Nd3 Ke8 (41...Bf6 42.Nb4 Nd4 43.ed4 Bd4 44.Nd3+/–) 42.Nb4 (better is 42.Ne5!? Bd8 43.Bb6+-) 42...Kd7+= 43.Kf2 Bh4 44.Ke2 Na7 45.Nd3 Bf6 46.Kd2 ½–½. Melich,Jindrich (2050) – Peniska,Pavel (1850), Klatovy op–A, 2000.

5.f4 e6 6.e3 Ngf6 7.b5 (7.Rg1 Qe7=+) 7...Bd6=+ 8.Rg1 Rg8 9.c4 dc4 10.Bc4 e5 (10...Qe7 11.Nc3=) 11.fe5 Ne5 (11...Be5 12.d4 Bh2 13.Rh1=+) 12.Be2 Qe7 (12...Ned7 13.Bf3 Nc5 14.d4+=) 13.Qa4 Ned7 (13...h6 14.Rg2=) 14.Qh4 (14.Bf6 Qf6 15.Qe4 Qe5 16.Qe5 Ne5+=) 14...0-0-0 15.Nc3 (15.d4 Nf8=) 15...Ba3 (15...h6 16.Rc1=) 16.0-0-0 (16.Ba3 Qa3 17.Qa4 Qc5=) 16...Bb2 (16...Nb6 17.Kc2=+) 17.Kb2= Kb8 (17...Nb6 18.d3=) 18.d3 (18.Rc1 Ne5 19.d4 Ng6=) 18...Ne5 (18...Nf8 19.Rc1=) 19.Qa4 Nd5 (19...g5 20.d4 Ned7 21.Qa3=) 20.Nd5 Rd5 21.d4 Nd7 22.Rd2 Nf6 23.Rc2 Rd7 24.Rgc1 g6 25.Ka1 Nd5 26.Bf3 Nb6 27.Qb3 Qe6 28.Qe6 fe6 29.Bg4 Re7 30.f4 Nd5= 31.Re1 g5 32.fg5 Rg5 33.Bf3 Rf7 34.Rg2 Rg2=+ 35.Bg2 Rf2 36.Bd5 ed5 37.e4 de4 38.Re4= Kc8 39.Rh4 Rf5 40.a4 h5 41.Kb2 Kd7 42.Kc3 ½–½. Bach,Matthias (2350) – Hebbinghaus,Holger (2300), Harburg–ch 2nd A, 2004.

5.f4 Ngf6 6.e3 e6 7.a3 g6 8.d4 Bg7 (8...Nb6 9.Bd3+=) 9.Nd2 0-0 10.Bd3 Nb6 11.a4 Qd6 12.0-0 Nc4 (12...Rfc8 13.b5=) 13.Nc4 (13.Bc4 dc4 14.b5 Qd5+=) 13...dc4= 14.Bc4 Qb4 15.Bb3 Qa5 16.Qf3 c6 17.Ba3 Rfd8 18.Rfb1 Qf5 19.Qg2 h5 (19...Rd7 20.a5=) 20.a5 Ne4? (better is 20...Rd7=) 21.Bc4+/– Nd2 22.Bd3 Qd5 23.Qd5 (better is 23.Rb7!? Rdb8 24.a6 Rb7 25.ab7+-) 23...Rd5+= (worse is 23...cd5 24.Rb7 Rdc8 25.Bb4+/–) 24.Rd1 (24.Rb7 Ra5 25.Rc7 Bf8=) 24...Nf3= 25.Kg2 Nh4 (25...Nd4!? 26.ed4 Bd4+=) 26.Kh3+= Bf6 27.a6 Rd7 (27...ba6 28.Be4 Rc8 29.Bd5 cd5 30.Bc5+/–) 28.Be4 Rc8 29.ab7 Rb7 30.Rdb1 (30.Bc5 Nf5+/–) 30...Rd7 (30...Rb1!? 31.Rb1 Bd8+/–) 31.Bc5+- Rcc7 (better is 31...Nf5!?+-) 32.Rb8 Kg7 33.Ra6 Nf5 34.Bc6 (34.Rc6?! Be7+/–) 34...Rd8 35.Rb7 Rdc8 (35...Rb7 36.Bb7 Be7 37.Ba7+-) 36.Raa7 Rb7 37.Bb7 Rc7 38.Be4 Ra7 39.Ba7 Nd6 40.Bd3 g5 (40...Kf8 41.c4+-) 41.fg5 Bg5 42.c4 1–0. Praggnanandhaa,R – Cohen Revivo,Shoham, World Cadets Championship – Open U12, 2016. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.gf3 Nd7)

5.f4 Ngf6 6.e3 e6 7.b5 c5 8.a4 g6 9.d3 Bg7 10.Nd2 0-0 11.Bg2 Qc7 12.0-0 Rfe8 13.Ra2 (13.c4 Rad8=) 13...Rad8 14.h3 (14.c4 dc4 15.Nc4 Nd5=) 14...e5 Black prepares d4 15.fe5 Ne5 16.Nf3 d4 (16...Nf3 17.Qf3 Nh5 18.c4 dc4 19.dc4+=) 17.Ne5 (17.ed4 Nf3 18.Qf3 cd4 19.Qb7 Qc2–/+) 17...Re5+= 18.Qf3 (18.e4!?+=) 18...Nd5–/+ 19.Qg3 Nb4 20.Raa1 de3 21.fe3 (21.Rac1 ef2 22.Kh1 Re7 23.Qc7 Rc7 24.Bg7 Kg7 25.Rf2 c4 26.dc4 Rc4–+) 21...Nc2 22.Rac1 (22.Rad1 Ne3 23.Rfe1 Qb8–+) 22...Ne3 23.Be5 (23.Rce1 Rd3 24.Rf3 Rd2 25.Rfe3 A) 25...Rb2 26.Re5 Be5 27.Re5+= (27.Qe5?! Qe5 28.Re5 c4+-); B) 25...Re3 26.Re3 Qg3 27.Rg3 Rb2 28.Bb7 c4–+) 23...Be5 (23...Qe5?! 24.Qe5 Be5 25.Bb7 Nf1 26.Kf1+=) 24.Qf3 (24.Qe3?? Bd4 25.Rce1 f5–+) 24...Nf1 25.Rf1 b6 0–1. Kranzl,P (2280) – Teske,H (2510), Danube Open, Aschach AUT, 1998. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3)

5.f4 Ngf6 6.Rg1 e6 =+.

5.f4 Ngf6 6.Bg2 e6 7.a3 Bd6 (7...c6 8.e3=+) 8.e3 0-0 (8...Nb6 9.d3=+) 9.d3 (9.Rg1 c6=+) 9...e5 (9...c5 10.bc5 Bc5 11.Nd2=+) 10.fe5= Ne5 (10...Be5 11.d4 Bd6 12.c4=) 11.Nd2 (11.Be5 Be5 12.d4 Bd6=) 11...c6 (11...Re8 12.0-0=) 12.Nf3 (12.Nb3 Re8=) 12...Nfd7 (12...Re8 13.c4=) 13.Ne5 (13.Nd4 a5 14.b5 Re8=) 13...Ne5 14.Qh5 (14.f4 Qh4 15.Kd2 Ng6=+) 14...g6 (14...Qe7 15.Bd4=+) 15.Qh6 (15.Qh3 f5=) 15...Qf6 16.0-0-0 (16.0-0!?=) 16...Qf2–/+ 17.h4 (17.Rhg1 Qf6–/+) 17...Rfe8 (17...d4 18.Bd4 f6 19.Be5 Be5+= (19...fe5? 20.h5 Qg2 21.hg6 Qg6 22.Rdg1 Rf1 23.Rf1 Qh6 24.Rh6+-)) 18.Rdf1?? (better is 18.Rd2 Qf6 19.Rf1–/+) 18...Qg2–+ 19.h5 Bf8 20.Qf4 Qg4 21.hg6–/+ fg6 22.Qh2 Qd7 23.Be5=+ a5 24.Rf6= Re5 25.Rg6 hg6 26.Qh8 Kf7 27.Rh7 Ke6 28.Rd7 Kd7 29.Qe5+/– ab4 30.ab4 Bh6 31.Kd2?? Re8= 32.Qf6 Re3 33.Kc3 Re7 34.Qg6. Polo,Jose Harald – Tonning,Erik (2215), NOR–chT north, 1999.

5.Rg1 e5 6.b5 Ne7 (6...Ngf6 7.d4 Qe7 8.Bh3=) 7.Bh3 (7.Nc3!?+=) 7...Ng6+= 8.a4 (8.Nc3 Nb6 9.e3 Nc4+=) 8...Bd6 (8...Qh4 9.Rg3–/+) 9.c4 (better is 9.Nc3!? Nb6 10.e3+=) 9...d4–/+ 10.Qc2 Nc5 11.Qf5 (11.Bf5 Qf6 12.a5 Nf4–+) 11...0-0–+ 12.d3 c6 (better is 12...Nf4 13.Bc1 g6 14.Bf4 ef4–+) 13.Ba3? (better is 13.Kd1–/+) 13...Qa5–+ 14.Kf1 Qa4 15.Nd2 Ne6 16.c5 (16.bc6 bc6 17.c5 Bc5 18.Rg6 hg6 (18...Ba3 19.Re6 fe6 20.Qe6 Kh8 21.Nc4=) 19.Qe5 Ba3 20.Be6 Rae8–+ (20...fe6?! 21.Qe6 Rf7 22.Ne4+=)) 16...Bc5 17.Rg6 (17.bc6 b5 18.Rg6 hg6 (18...Ba3?! 19.Rg3+=) 19.Qe5 Ba3 20.Be6 Bd6 (20...fe6?! 21.Qe6 Kh7 22.Qh3 Kg8 23.Qe6 Kh7 24.Qh3 Kg8 25.Qe6=) 21.Qd6 Qa1 22.Kg2 fe6 23.Qe6 Rf7–+) 17...hg6 (17...fg6 18.Qe6 Kh8 19.bc6 Ba3 20.cb7+/–; 17...Ba3 18.Re6 fe6 19.Qe6 Kh8 20.bc6=) 18.Qe5 Ba3 19.Be6 Rae8 (19...Rae8 20.Bb3 Qb4–+ (worse is 20...Re5 21.Ba4 Bb2 22.Ra2 cb5 23.f4–+); 19...fe6?! 20.Qe6 Rf7 21.bc6–/+) 0–1. Nadanian,Ashot (2445) – Khruschiov,Alexey (2395), RGAFK–gm Moscow, 2002.

5.a3 Nf6 =+.

5.a3 Qg5 6.e3 (6.Nc3 a5=) 6...Nd7 (6...Nf6 7.h4 Qg6 8.Nc3=) 7.f4 (7.h4 Qh5=) 7...Qg6 8.d4 (8.Nc3 0-0-0=) 8...Ngf6 9.Nd2 0-0-0 (9...a5 10.b5=) 10.Bd3 (10.Rc1 Ne4=) 10...Ne4 11.Qe2 f5 12.0-0-0 (12.Nf3 Ndf6=) 12...h6 (12...Qf6 13.f3 Nd2 14.Rd2=) 13.c4 (13.h4 Ndf6=) 13...Qf6 14.c5 (14.h4 Nb6=) 14...g5 (14...Qh4 15.Be4 fe4 16.c6=) 15.c6 Nb6 (15...bc6 16.Be4 Kb7 17.fg5 hg5+-) 16.cb7 (16.Be4 fe4 17.Ne4 de4+/–) 16...Kb8 17.Nb3 gf4 18.f3 Ng5 19.Nc5 fe3 (19...Bd6 20.ef4 Bf4 21.Kc2+=) 20.Qe3+/– Rd6 21.Kb1 Bg7 22.h4 (22.Rc1 f4 23.Qe2 Rg8+/–) 22...Nf7+/– 23.Rc1 Nd7 (23...Rhd8!?+/–) 24.Na6+- Ra6 (24...Kb7 25.Rc7 Ka8 26.Qf4+/–) 25.Ba6 Nb6 26.Rhg1 Rg8 27.h5 Nd8?? (better is 27...f4 28.Qc3 Qe7+-) 28.Rc7! (28...Kc7 29.Qf4 e5 30.de5+-) 1–0. Grott,Peter – Gohla,Ulf, DESC, 2000.

5.a3 Qh4 6.e3 Nf6 7.Nc3 c6 (7...Nc6=) 8.d4 (8.f4!?=) 8...Nbd7=+ 9.Ne2 (9.f4 Bd6=+) 9...Bd6 (9...Be7 10.Ng3–/+) 10.Ng3 0-0 11.Bd3 (11.c4 dc4 12.Bc4 Nb6–/+) 11...g6 (11...Nb6 12.c3–/+) 12.f4 (12.c3 e5–/+) 12...a5 13.c3 ab4 14.cb4 b5 15.Qc2 Rfc8 16.Rd1 (16.f3 Nb6–/+) 16...Nb6–+ 17.Bc1 (17.Be2 Ng4–+) 17...Ng4 (17...Nc4!? 18.Bc4 dc4 19.Ne4–+) 18.h3–/+ Ne3 (18...Nf6!?–/+) 19.Be3=+ Ra3 20.Kf1 (20.0-0 Nc4 21.Bc1 Ra4–/+) 20...Nc4 (20...Bf4 21.Qc1 Be3 22.Qa3 Bd4 23.Be2=+) 21.Kg2 (21.Bc1 Ra4=+) 21...Bf4–/+ (21...Ne3?! 22.fe3 Bb4 23.Rb1=) 22.Bc1 (22.Bf4 Qf4 23.Ra1 Qd4 24.Ra3 Na3–/+) 22...Bc1 23.Qc1 Rb3 (23...Rca8 24.Rhe1–/+) 24.Bc4 (24.Qa1 Rb4 25.Qc3 Ra4–/+) 24...dc4 (24...bc4 25.Rhe1–/+) 25.Rhe1–/+ Ra8 26.Re3 Rb4 27.Re4 (27.Ne4 Rba4–/+) 27...Qd8–+ 28.Rf4 (28.Re5 Ra2–+) 28...Ra2 (better 28...Rba4–+) 29.d5? (better 29.Rf3–/+; 29.Rf3 Qh4 30.d5 cd5 31.Rd5 ed5 32.Qe1–/+) 29...cd5–+ 30.Ne4 (30.Rf3 Qc8–+) 30...f5 (better 30...Rb3!? 31.Rd2 Raa3 32.Nf6 Kg7 33.Qe1–+; better 30...Rb3 31.Rd2 Raa3–+) 31.Qc3 Rb3?? (better 31...Qe7 32.Nf6 Kf7–/+) 32.Qe5=+ Kf7?? (better 32...Qe7 33.Qb8 Qf8–+; 32...Ra6 33.Nc5 Qg5 34.Kh2 Qh5 35.Qb8 Kg7 36.Qc7 Kh6 37.Nb3 cb3+- (37...Qd1?? 38.Rh4 Qh5 39.Rh5 Kh5 40.Nc5+-)) 33.Nd6+- Kf8 34.Ne4 (34.Qe6 Ra7 35.Rd5 Rd3 36.Rdf5 gf5 37.Rf5 Kg7 38.Ne8 Qe8 39.Qe8 h6+-; better 34.Qe6 Qg5 35.Rg4 Rf2 36.Kf2 Qe3 37.Qe3 Re3 38.Ke3 fg4 39.hg4+-) 34...Kf7= 35.Nd6 Kf8 36.Ne4 (36.Qe6 Ra7 37.Rd5 Rd3 38.Rdf5 gf5 39.Rf5 Kg7 40.Ne8 Qe8 41.Qe8 h6+-; better 36.Qe6 Ra7 37.Rd5+-) 36…Kg8 ½–½. Studenetzky,Moises (2200) – Mrdja,Milan (2345), Caorle op, 1984. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.gf3 e6)

5.a4 Nf6 6.b5 =+.

5.a4 Qh4 6.b5 Nd7 (6...Nf6 7.e3=+) 7.e3 Ngf6 8.d4 (8.a5 Bd6=+) 8...Bd6 9.Bd3 (9.a5 c5=+) 9...c5 (9...Bh2? 10.Nd2+-) 10.bc6 bc6 11.Nd2 0-0 (11...Bh2? 12.Nf1+-) 12.e4 (12.c4 Rab8 (12...Bh2? 13.Nf1+-) 13.Qc2 A) 13...Bh2? 14.Nf1 Ne5 15.de5 Rb2 16.Rh2 (16.Qb2?! Be5 17.Rh4 Bb2+-) 16...Rc2 17.Rh4+-; B) 13...Bb4=+) 12...e5–/+ (12...Bh2? 13.Nf1 Qg5 14.Rh2+- (14.Nh2?! Qg2 15.Kd2 Rfb8+/–)) 13.c4 (13.Rb1 ed4 14.Bd4 Nc5–/+ (14...Bh2? 15.Nf1+-)) 13...Bb4 14.Qc2 (14.Ke2 Rae8–/+) 14...de4–+ 15.fe4? (better is 15.Be4 ed4 16.Bd4–+) 15…Ng4 (16.Rf1 Ne3–+ (16...Qh2?! 17.Be2 Ndf6 18.Bg4 Ng4 19.Bc3 Bc3 20.Qc3–+)) 0–1. Perez Cortes – Buss,Michael, email 4AMM–02, 1997.

5.b5 Nf6 6.f4 g6 7.a4 Bg7 8.e3 0-0 9.d3 a6 10.Nd2 Nbd7 11.Bh3 Re8 12.Rg1 c6 13.Qf3 ab5 14.ab5 Ra1 15.Ba1 Qa5 16.Ke2 Qb5 17.f5 ef5 18.Bf5 Ne5 19.Qg2 Qa4 20.h4 Qc2 21.Be5 Re5 22.d4 Rf5 Normal 0-1. ZibbitVideos (2310) - uoylliki (2265), Rated Blitz game, lichess.org, 2015.

5.c4 dc4=+ 6.Na3 Nf6 7.Rg1 (7.Nc4 Bb4 8.Qa4 Nc6=+) 7...Bb4–/+ 8.Rg7 Ba3 (8...Bf8 9.Rg1 Bd6 10.Qa4 c6 11.Qc4=) 9.Ba3 Nc6 10.Rb1 b6 (10...Rb8 11.Qa4 Qd5 12.Rb5=) 11.Bb2 Qe7 (better 11...a6!?=) 12.Qa4+- Kf8 13.Rg3 Na5 14.Bc3 Rb8?? (better 14...Rd8+-) 15.Qa5!!+- ba5 (15...c5+-) 16.Rb8 Ne8 (16...Qe8 17.Re8 Ke8 18.Bf6 Rf8+-) 17.Bg7 Kg8 18.Bh6 Qg5 19.Rg5 1–0. michaelbuss (2810) – margor63 (1815), ChessWorld.net, 2013.

5.e3 Bb4?? 6.Bg7+- Nd7 7.Bh8 f6 (7...Ngf6 8.Bg7+-) 8.f4 Qe7 9.Qh5 Qf7 10.Be2 Nf8 11.Bg7 Ng6 (11...Qh5 12.Bh5 Ng6 13.a3+-) 12.Qh7 0-0-0 13.Bh5 Nf8 (13...N8e7 14.f5! Rg8 15.fg6 Qg7 16.Qg7 Rg7 17.Rg1+-) 14.Bf7 Nh7 15.Be6 Kb8 16.Nc3 Bc3 17.dc3 Ne7 18.Ke2 Rd6 19.f5 Nc6 (19...Rc6 20.Rhg1 Rc3 21.Bh6 Rc2 22.Kf3+-) 20.Bh6 Ne5 21.Rhg1 Rd8 22.Rg7 (better is 22.f4!? Nc6 23.Rg8 Rg8 24.Bg8 Na5+-) 22...Nf8 23.Rd1 c6 24.Bf4 1–0. Jannis,Guido – Valkenborgs,Victor, Lommel Summer op, 2003. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.gf3 e6)

5.e3 c6 6.a3 Nd7 7.c4 Qh4 8.cd5 ed5 9.Nc3 Ngf6 10.d4 Bd6 11.Qc2 0-0 12.Ne2 Rfe8 (12...Bh2?! 13.Ng3 Rae8 14.Bd3 Re3 15.fe3 Qg3 16.Qf2 Qf2 17.Kf2+=) 13.Qd3 (13.Ng3 Bg3 14.fg3 Qg5=) 13...Nb6–/+ 14.Ng3 Re3 (14...Nc4!? 15.Nf5 Qh5=+) 15.fe3= (15.Qe3? Re8 16.Qe8 Ne8–+) 15...Bg3 16.Kd1 Nc4 17.Bc1 Re8 18.Ra2 Bf2 19.e4 b5 20.e5 Bd4 21.f4 c5 22.bc5 (22.ef6? Qe1 23.Kc2 Re3 24.Qh7 Kh7 25.Bd3 Kh8 26.Re1 Re1 27.fg7 Kg7 28.bc5 Bc5 29.Bb2 Kf8–+) 22...Bc5 23.ef6 Re1 24.Kc2 Qf2 25.Bd2 a5 (25...Nd2?! 26.Qd2 Rf1 27.Rf1 Qf1 28.Qd5=) 26.Rg1 Ne3 27.Kb3 a4 (27...Qg1?! 28.Be1 a4 29.Kb2 Qf1 30.Qf1 Nf1 31.Kc3–/+) 28.Kc3 d4 29.Kb2 g6 (29...Nf1?? 30.Rg7 Kf8 31.Rh7+-) 30.Qb5?? (30.Rg5 Bf8 31.Rg2 Ng2 32.Bg2–+) 30…Qd2 (30...Qg1? 31.Qc5 (31.Be1 Qf1 32.Qf1 Nf1=) 31...h6 32.Qc8 Kh7 33.Qd7 (33.Be1?! Qf1 34.Qc1 Qf4+/–) 33...Rb1 34.Kb1 Qf1 35.Kb2 Nd1 36.Kc2 Qc4 37.Kd1 Qa2 38.Qa4+-; 30...Rf1 31.Rf1 Nf1 32.Qc5 Qd2 33.Qc2=; 30...Nf1 31.Qc5 Qd2 32.Qc2 Qc2 33.Kc2 Ne3 34.Kd3 Rg1 35.Rb2 Rd1 36.Ke4–+) 0–1. inspector (2330) – pierred (2595), net–chess.com, 2008.

5.e3 c6 6.b5 Nf6 =+.

5.e3 c6 6.c4 Bb4?? 7.Bg7 dc4 8.Bc4 +-.

5.e3 c6 6.c4 Nf6 7.b5 (7.a3 dc4 8.Bc4 b5=+) 7...cb5 (7...dc4 8.Bc4 a6 9.a4=+) 8.cd5= Nd5 9.Bb5 Nd7 (9...Nc6 10.Rg1=) 10.Nc3 a6 (10...Nc3 11.Bc3 a6 12.Be2=) 11.Be2 (11.Nd5 ab5 12.Nf4 b4=) 11...N5f6 (11...Nc3 12.Bc3 b5 13.Rb1=) 12.Ne4 Be7 13.a4 (13.Rb1 b6=) 13...0-0 14.Rg1 Rc8 15.Rb1 Qc7 16.f4 e5 (16...Rb8!?=) 17.Ng3+= Rfe8 18.fe5 (18.Nf5 g6 19.fe5 Ne5+=) 18...Ne5+= 19.Rc1 (19.Qb3 Nfd7+=) 19...Qa5 (19...Nc6 20.Qb3 g6 21.Bc4+=) 20.Rc8 (20.Nf5 Nf3 21.Bf3 Qf5 22.Bb7 Rb8 23.Bf6 Qf6+=) 20...Rc8= 21.Nf5 Nf3 22.Bf3 Qf5 23.Bb7 (23.Bf6!? Bf6 24.Bg4+= (< 24.Bb7 Rb8 25.e4 Qe5=+)) 23...Rb8=+ 24.Bf6 Bf6 (24...Qf6?! 25.Be4+=) 25.Ba6?? (better is 25.e4 Qe5 26.Qc1=+ (26.Ba6?? Qe4 27.Be2 Rb1 28.Qb1 Qb1 29.Bd1 Qe4 30.Kf1 Qf4–+)) 25…Rb1–+ (26.Be2 Rd1 27.Bd1 Qh3–+) 0–1. Morozevich,A – Jekatarina, ICC, 2000.

5.e3 Qh4 6.a3 Nd7 7.d3 0-0-0 A) 8.Nd2 A1) 8...Ne7 9.f4 (9.Qe2 Nb6 10.Rd1 Na4 11.Ba1 d4 12.ed4 Nd5 13.Ne4 Nf4 14.Qe3=+; 9.Nb3 e5 10.c4 dc4 11.dc4 Ng6 12.Nd2 f5 13.Qb3 f4 14.Rd1=+; 9.d4 Nf5 10.Qe2 Nb6 11.c4 Nc4 12.Nc4 dc4 13.Rc1 b5 14.f4=+) 9...Nf5 10.Nf3 Qe7 11.Rg1 f6 12.Bg2 Kb8 13.Qe2 g6 14.c4=; A2) 8...Nh6 9.Qe2 (9.f4 Nf5 10.Nf3 Qe7 11.Nd4 Nd6 12.c4 dc4 13.dc4 c5 14.Nf3=; 9.e4 Nf6 10.Qe2 d4 11.c3 dc3 12.Bc3 Kb8 13.Rc1 Nh5 14.Qe3=; 9.Rc1 e5 10.Qe2 Nf5 11.Bg2 d4 12.0-0 Qh5 13.Ne4 Qg6 14.Ng3=) 9...Kb8 10.c4 Nf5 11.Rc1 Nb6 12.cd5 Nd5 13.f4 Be7 14.Nf3=; A3) 8...e5 9.d4 (9.Qe2 Ngf6 10.c4 Kb8 11.d4 ed4 12.Bd4 c5 13.bc5 Bc5 14.Nb3=; 9.c4 d4 10.Qe2 Nb6 11.f4 de3 12.Qe3 ef4 13.Qh3 Qh3 14.Bh3=; 9.Bg2 f5 10.c4 f4 11.Ke2 Ngf6 12.cd5 Nd5 13.Rc1 Kb8 14.Ne4=+) 9...Bd6 10.c4 ed4 11.Bd4 Be5 12.Nb3 dc4 13.Bc4 Qe7 14.Rc1=; B) 8.Qe2 B1) 8...e5 9.d4 (9.Nd2 Ngf6 10.c4 Bd6 11.Rc1 d4 12.c5 Be7 13.c6 bc6 14.f4+=; 9.c4 dc4 10.dc4 Nh6 11.Nc3 f5 12.Rd1 f4 13.e4 Nf7 14.h3=; 9.c3 Kb8 10.c4 dc4 11.dc4 f5 12.Nc3 Ngf6 13.Rd1 f4 14.e4=+) 9...Qh5 10.de5 Ne5 11.f4 Qe2 12.Be2 Ng6 13.c4 N8e7 14.Rg1+=; B2) 8...Kb8 9.f4 (9.Nd2 Ngf6 10.c4 g5 11.Bg2 Bg7 12.Rc1 Rhg8 13.Nb3 h6 14.b5=) 9...Ne7 10.Nd2 Nb6 11.Nf3 Qh5 12.Ne5 Qf5 13.Bh3 Qh3 14.Nf7+-; B3) 8...Ngf6 9.f4 (9.Nd2 Kb8 10.c4 g5 11.Bg2 Bg7 12.Rc1 Rhe8 13.b5 Nh5 14.Nb3=; 9.c4 dc4 10.dc4 Kb8 11.c5 c6 12.Nd2 Nd5 13.Rd1 e5 14.Qc4=; 9.Bd4 Kb8 10.f4 Bd6 11.Nd2 Qh6 12.c4 e5 13.fe5 Be5 14.Be5=) 9...Nb6 10.Bd4 h5 11.Nd2 Nfd7 12.Rc1 Qg4 13.c4 Qe2 14.Be2+=.

5.e3 Qh4 6.a3 Nd7 7.d3 a5 8.ba5 A) 8...Ra5 9.Rg1 (9.c4 dc4 10.dc4 Ngf6 11.Nd2 Be7 12.Nb3 Ra6 13.Qc2 0-0 14.c5=+; 9.h3 Ngf6 10.Rg1 Ra8 11.Nd2 e5 12.d4 ed4 13.Bd4 Rg8 14.Qb1=; 9.Qd2 Ra7 10.c4 dc4 11.Qc2 Ngf6 12.Qc4 Qc4 13.dc4 Bd6 14.f4=+) 9...Ngf6 10.h3 e5 11.d4 ed4 12.Qd4 Qd4 13.Bd4 c6 14.c4=; B) 8...Ne7 9.f4 (9.Qd2 Nc6 10.Bg2 Nf6 11.f4 Bd6 12.c4 Na5 13.Qe2 Nb3 14.Ra2=+; 9.c4 Nf5 10.Qc1 Bd6 11.d4 Ra5 12.Qc3 Ra7 13.cd5 ed5 14.Nd2=+; 9.Bg2 Nf5 10.Qe2 d4 11.e4 Ne3 12.Bf1 e5 13.c3 Bc5 14.Bh3–/+) 9...Ra5 10.c4 Nf5 11.Qd2 Ra8 12.e4 de4 13.de4 Nh6 14.Nc3=; C) 8...Ngf6 9.f4 (9.c4 dc4 10.dc4 Ra5 11.Nd2 Be7 12.Nb3 Ra6 13.Qc2 0-0 14.c5=+; 9.Bc3 e5 10.d4 Bd6 11.Bb5 c6 12.Bd3 0-0 13.Bb4 Bb4 14.ab4–/+; 9.Qd2 Bc5 10.d4 Bd6 11.c4 dc4 12.f4 Qg4 13.Qe2 Qe2 14.Be2=+) 9...Bc5 10.Qd2 Ng4 11.d4 Bd6 12.h3 Ngf6 13.Bd3 0-0 14.c4=.

5.e3 Qh4 6.a3 Nd7 7.d3 a5 8.b5 Ngf6 (8...Ne7 9.Qe2 (9.f4 Nf5 10.Qf3 0-0-0 11.e4 Nd6 12.Nc3 d4 13.Ne2 Nb5 14.Nd4=+; 9.c4 dc4 10.dc4 Nf5 11.e4 Bc5 12.Qe2 Nd4 13.Bd4 Bd4 14.Ra2–/+; 9.e4 e5 10.d4 de4 11.de5 e3 12.Qe2 Nf5 13.Kd1 0-0-0 14.fe3–+) 9...Rd8 10.h3 e5 11.Rg1 Ng6 12.f4 ef4 13.ef4 Qe7 14.f5=; 8...Nh6 9.Qe2 (9.e4 0-0-0 10.Qd2 Qh5 11.Qa5 Qf3 12.Rg1 Bc5 13.Rg2 Ng4 14.Qd2=+; 9.c4 dc4 10.Qc2 cd3 11.Bd3 Nc5 12.Bh7 0-0-0 13.Be4 f5 14.Bd4–/+; 9.f4 0-0-0 10.Nd2 Nf5 11.Nf3 Qe7 12.Bh3 Nh4 13.Nh4 Qh4 14.Qg4=) 9...Nf6 10.Nd2 c6 11.bc6 bc6 12.f4 Nhg4 13.Nf3 Qh5 14.h3=) 9.Nd2 (9.Be2 Bc5 10.d4 Bd6 11.c4 dc4 12.Bc4 Nd5 13.Qe2 Qh3 14.Nd2=+; 9.f4 Be7 10.Nd2 0-0 11.c4 Nc5 12.cd5 ed5 13.Nf3 Qh6 14.Ne5=; 9.d4 Nb6 10.Bd3 Bd6 11.Qe2 Na4 12.Ra2 0-0 13.f4 c5 14.bc6=+) 9...e5 (9...Bc5 10.d4 Bd6 11.c4 0-0 12.c5 Be7 13.Bd3 Rfd8 14.Rc1=) 10.d4 Bd6 11.de5 (11.c4 ed4 12.Bd4 Be5=+ 13.Nb3 a4 14.Be5=+) 11...Be5 12.Be5 Ne5 13.f4 (13.Qe2 Rd8 14.f4=+) 13...Nfg4 (13...Neg4 14.Qe2 0-0 15.h3 Ne3 16.Nf3 (16.Qe3?? Rfe8 17.0-0-0 Re3 18.fe3 Re8–+) 16...Nc2 17.Qc2 Rfe8 18.Be2 Qf4 19.0-0=+) 14.Qe2 Ng6 (14...Nd7 15.Bg2 Nb6 16.c4=) 15.Nf3 Qf6 (15...Qe7 16.Rg1 f5 17.Nd4=) 16.Nd4 Nh6 17.c3 (17.c4 dc4 18.Qc4 Nf5=) 17...0-0 18.Qh5 c5 19.bc6 bc6 20.Qg5 Qd6 21.Bd3 (21.f5 f6 22.Qg2 Ne5=) 21...c5 (21...Rfb8 22.Rg1 Rb7 23.h4=) 22.Nb5 Qd7 23.a4 (23.Rd1 Rab8 24.c4 dc4 25.Bc4 Qc6+=) 23...f6 (23...f5 24.Rd1 Rfd8 25.Rd2=) 24.Qh5 (better 24.Qg3 f5 25.Rd1=) 24...d4 (24...f5!?=) 25.cd4 (25.Rd1!? f5 26.Bc4 Kh8 27.cd4+-) 25...cd4+= 26.Rd1 (26.Bg6 hg6 27.Qg6 de3 28.fe3 Rae8=) 26...Qc6 27.Rg1 de3 (27...f5 28.Nd4 Qa4 29.Nf5 Nf5 30.Bf5 Qb4 31.Rd2 Rad8 32.Be6 Kh8–+) 28.fe3 (28.Bg6 ef2 29.Kf2 hg6 30.Qg6 Qc5 31.Nd4 Rf7 32.Qh6 Rd8 33.Rg7 Rg7 34.Qf6 Rf8 35.Qe6 Kh8–/+) 28...Rae8 (28...f5 29.Nd4 Qa4 30.Nf5 Nf5 31.Bf5=+) 29.Kf2 (29.Nd4 Qc3 30.Kf1 f5=+) 29...f5 30.h3 (30.Nd6 Ng4 31.Rg4 fg4 32.Qg4 Qc5 33.Bc4 Kh8 34.Ne8 Rf4 35.Qf4 Nf4–/+) 30...Qb6 (30...Qe6 31.Qf3 Qa2 32.Kg3 Qa4 33.Nd6–/+) 31.Bc4 Kh8 32.Rd4 Re4 33.Rgd1 Rd4 34.Rd4 Qf6 35.Qg5 Qc6 36.Be2 Qh1 (36...Qc2 37.Nd6=) 37.Qg2 Qa1 (37...Qc1 38.Nd6+=) 38.Nd6 (better 38.Qg1 Qa2 39.Qe1+=) 38...Nf4? (better 38...Ne7+=) 39.Rf4+- Qe5 (39...g5 40.Rf3+- (40.Qg5?! Rg8 41.h4 Rg5 42.hg5 Ng4 43.Bg4 fg4=)) 40.Nc4 Qc3 (40...Qf6 41.Na5 g5 42.Rc4+-) 41.Qd5 (41.Qd5 Qc1 42.Na5+-) 1–0. Runic,Zoran (2445) – Bogdanovski,Vlatko (2435), It, Bijeljina Dvorovi YUG, 2002.

5.e3 Qh4 6.a3 Nd7 7.d3 Ngf6 A) 8.c4 A1) 8...dc4 9.dc4 0-0-0 10.Qd4 Qd4 11.Bd4 a6 12.Nd2 e5 13.Bc3 c6 14.Ne4=; A2) 8...Bd6 9.Qc2 (9.Nd2 a5 10.b5 0-0 11.f4 Rfd8 12.Qf3 c6 13.bc6 bc6 14.Qg3=; 9.cd5 ed5 10.f4 0-0 11.Qf3 a5 12.b5 Rfe8 13.Be2 c6 14.bc6=; 9.f4 a5 10.cd5 Nd5 11.Qd2 ab4 12.Bg7 Rg8 13.ab4 Ra1 14.Ba1–/+) 9...a5 10.c5 Be5 11.d4 Bh2 12.c6 bc6 13.Qc6 Rb8 14.b5=; A3) 8...c5 9.bc5 (9.Qb3 d4 10.Ke2 0-0-0 11.Qa4 Kb8 12.Qa5 b6 13.Qb5 Ne5 14.Nd2=+; 9.Qa4 d4 10.Ke2 Bd6 11.bc5 Bc5 12.Nd2 0-0 13.Rb1 e5 14.Nb3–/+) 9...Bc5 10.d4 Bd6 11.Nc3 0-0 12.Rc1 Rfc8 13.c5 Bc7 14.Qb3=; B) 8.Nd2=+ B1) 8...a5 9.ba5 (9.b5 Bc5 10.d4 Bd6 11.Bd3 e5 12.Bf5 0-0 13.de5 Be5 14.Be5=+; 9.c4 Bd6 10.b5 0-0 11.f4 Rfd8 12.Rb1 Nc5 13.Nf3 Qh6 14.cd5=; 9.d4 Bd6 10.b5 0-0 11.c4 c5 12.bc6 bc6 13.Rb1 e5 14.cd5=) 9...e5 10.Nb3 Bd6 11.d4 Qh5 12.c4 ed4 13.Bd4 Be5 14.cd5=; B2) 8...c5 9.c3 (9.bc5 Bc5 10.d4 Bd6 11.c4 0-0 12.c5 Bc7 13.Rb1 Rfc8 14.Bc3=; 9.Bf6 Qf6 10.bc5 Bc5 11.d4 Bd6 12.c4 0-0 13.f4 Qe7 14.Qb3=) 9...Bd6 10.bc5 Bc5 11.d4 Bd6 12.c4 0-0 13.c5 Bc7 14.Rb1=; B3) 8...e5 9.d4 (9.Qe2 a5 10.ba5 Ra5 11.c4 Bd6 12.cd5 Rd5 13.Bg2 Nc5 14.d4=; 9.c4 d4 10.ed4 ed4 11.Qe2 Kd8 12.c5 a5 13.f4 Qf4 14.Qf3–/+; 9.Bg2 c5 10.b5 Bd6 11.Rb1 0-0-0 12.Qe2 Nb6 13.c4 dc4 14.Nc4=+) 9...Bd6 10.c4 ed4 11.Bd4 Be5 12.Nb3 dc4 13.Bc4 Rd8 14.f4=.

5.e4?! Bb4?? 6.Bg7 Bd2 7.Nd2 +-.

5.e4 Bb4?? 6.Bg7 de4 7.Bh8 +-.

5.f4 Nf6 6.b5 g6N 7.e3 Bg7 8.Be2 0-0 9.0-0 Nbd7 10.d3 Ne8 11.Bg7 Ng7 12.Nd2 a6 13.a4 Qf6 14.c4 c6 15.Rb1 ab5 16.ab5 Ra2 17.bc6 bc6 18.Nf3 Nf5 19.Re1 Rfa8 20.Qb3 Nh4 21.Nd4? (better is 21.Nh4!? Qh4 22.Rb2 Rb2 23.Qb2+=) 21...c5 (better is 21...e5!? 22.Qb7 R2a7 23.Qc6 ed4 24.Qd5 de3 25.fe3 Qe7–/+) 22.Nc6+= 0–1. Chashchev,Sergey (2375) – Lintchevski,Daniil (2560), Chigorin Memorial Blitz, 2015.

5.Rg1 Bb4 6.Bg7 Nf6 7.Bh8 +-.

5.Rg1 Ne7 6.e3 (6.a3 Ng6=) 6...Qd6=+ 7.f4 (7.Bg7? Bg7 8.c3 Ng6–+) 7...Qb4 8.Bc3 Qa4 9.Qc1 (9.Bg7? Rg8 10.Bf8 Rg1 (< 10...Rf8 11.Nc3 Qd7 12.Qh5+=; 10...Kf8?! 11.Nc3 Qd7 12.Rg8 Kg8 13.Qg4 Kh8 14.Qh5+=) 11.Be7 Qa6–+) 9...a6 10.Qb2 (< 10.Bg7 Rg8 11.Qb2 d4–+) 10...Qc6 11.Bd3 f6 12.Be2 (12.a4 b6–/+) 12...Ng6 (12...Nd7 13.d3–/+) 13.d4 (13.h4 Nd7 14.h5 Ne7–/+) 13...Nd7 14.Bd3 Nb6 (14...f5 15.Nd2–/+) 15.Qb3 Nc4 (15...f5 16.Nd2–/+) 16.Nd2 b5 (16...Nd2 17.Bd2 Nh4 18.Rg3–/+) 17.Bb4 (17.Kd1 Nh4–/+) 17...Bb4 (17...Nh4 18.Rg3–/+) 18.Qb4 Qd6 (18...a5 19.Qb3 a4 20.Qb4–/+) 19.Qd6=+ Nd6 20.Nb3 (20.a4 Kf7–/+) 20...Kf7 21.Nc5 Nh4 (21...f5 22.Ke2=+) 22.Ke2=+ h6 23.a4 g5 24.ab5 ab5 25.fg5 hg5 26.Ra8 (26.Ra6 Nhf5–/+) 26...Ra8 27.Rb1 c6 28.Rg1 Nc4 29.f4 gf4 30.ef4 Nb2 (30...Rh8 31.h3–/+) 31.Rb1 (31.h3 Nd3 32.Kd3 Nf5–+) 31...Nd3–+ 32.Kd3 Nf5 33.c3 Rh8 34.Rh1 Rh4 35.Re1 Rh3 36.Kd2 Rh2 (36...b4 37.cb4 Rh2 38.Kc3 Rh3 39.Nd3–+) 37.Re2 Re2 (38.Ke2 b4–+) 0–1. Van Rooijen,Peter – Buss,Michael, corr or02–026, 2003.

5.Rg1 f6 6.e4 (6.Nc3 a6+=) 6...de4 (6...a5!? 7.b5 Ne7+/-) 7.fe4+/- Ne7 8.Qh5 g6 9.Qb5 (9.Qh3 e5 10.Bc4 Qd6+/-) 9...c6 (9...Kf7!?+/-) 10.Qb7 (10.Qc4 e5+/-) 10...Nd7 11.Bc4?? (better 11.Na3 Rb8 12.Nc4+/-) 11...Rg8?? (better 11...Rb8 12.Qa7 Rb4=+) 12.Be6+- Bh6 13.Bd7 (better 13.Rg3 Qc8 14.Qc8 Rc8 15.Rh3+-) 13...Qd7 14.Qa8 (better 14.Qd7 Kd7 15.Bf6+-) 14...Kf7+/- 15.Qg8! Kg8 (15...Ng8 16.Rg3 Combination; 15...Kg8 16.Bf6 Combination) 16.Bf6 (16.Rg3+/-) 16...Kf7?? (better 16...Qe6 17.Be7 Qe4 18.Kd1 Qe7=) 17.Bc3+- Nc8 (17...Qe6 18.f3+-) 18.Na3 (18.d3!? Nb6 19.Nd2 Na4+-) 18...Nb6 19.0-0-0 (19.d3 Bf4 20.Rb1 Qh3+-) 19...Na4 (19...Qe6 20.Rde1+/-) 20.Nb1 (20.Kb1 Qe6 21.f4 Qe4+/-) 20...Nc3 21.Nc3 Qb7 (21...Qd4!? 22.Rg3 Qf2+/-) 22.a3+- Qa6 (22...Qb6 23.Rg2+-) 23.Kb2 Qc4 (23...Qb6 24.d4+-) 24.f4! Bf4 (24...Bg7 25.e5+-) 25.Rgf1 (better 25.Rdf1+-) 25...g5 26.h4! h6 (26...gh4 27.Rf4 Double attack (27.Rf4 Deflection; 27.Rf4 Decoy)) 27.hg5 hg5 28.d4 (28.d3 Qd4+-) 28...Kf6 (28...a5 29.ba5 Qa6 30.Rd3+-) 29.e5 Ke6 (29...Kf5 30.Rfe1 a5 31.Ne4+-) 30.Ne4 (30.Rfe1 Ke7+-) 30...Qd5 (30...a5 31.Nc5 Ke7 32.c3+-) 31.Nc5 Ke7 32.Nb3 Ke6 33.Na5 (33.Rf2 Ke7+-) 33...Ke7 (33...Kf5 34.Nb7+-) 34.c4 (34.Rd3!? Ke8+-) 34...Qe4 (34...Qg2 35.Kb3+-) 35.Rfe1 (35.Kc3!? Ke8+-) 35...Qf3 36.Nb3?? (better 36.a4+-) 36...c5?? (better 36...Qf2 37.Kc3 Qg3 38.Kc2 Qf2 39.Kb1 Qg3=) 37.Nc5+- Ke8 (37...Be3 38.d5 Bc5 39.bc5 Qf2 40.Kb3+-) 38.Ne4 (38.Rf1 Qe3+-) 38...Ke7 (38...g4 39.e6 Qg2 40.Kb3 Qf3 41.Nc3+-) 39.Nd6 1-0. Lance5500 (2500) - ProgramFOX (1640), lichess.org, 2016.

6.d4 a5 7.b5 Ngf6 8.c4 Bd6 9.c5 Be7 10.Nc3 0-0 11.Rg1 =.

6.d4 Bd6 7.e3 Qh4 (7...a5 8.b5 Nb6 9.e4 Bf4 10.Nc3 Nf6 11.Ne2=+; 7...Ngf6 8.c4 dc4 9.Bc4 0-0 10.Nc3 Nb6 11.Bd3=) 8.f4 (8.c4 Ngf6 9.Nc3 Bh2 10.cd5 Nd5 11.Nd5=; 8.Bd3 0-0-0 9.Nd2 Ngf6 10.c4 Qh3 11.c5=; 8.Nd2 a5 9.b5 Ngf6 10.Bd3 e5 11.Ra2=+) 8...Ngf6 9.h3 (9.c4!?=+ a5 10.b5 Ne4 11.Qf3=) 9...g5–/+ 10.fg5?? (better is 10.Nd2 gf4 11.Nf3–/+) 10...Ne4–+ (10...Qg5?! 11.Nd2=) 11.Qf3 Nf2! (11...Qg5?! 12.c4=; 11...Ng5?! 12.Qg4=) 12.Rg1 (12.Qf2 Bg3) 12…Nh3 (13.Kd1 Ng1–+) 0–1. Piegeler,Wilhelm – Buss,Michael, corr ICCF TT/4/90–13, 1992.

6.d4 Bd6 7.e4 (A) 7...Nh6 8.e5 (8.Rg1 0-0 9.Bc1 Qh4 10.h3 Bf4 11.Bf4=) 8...Be7 9.Rg1 Nf5 10.Bd3 Bf8 11.Nd2=; (B) 7...Bf4 8.Nc3 Nb6 9.Rg1 g6 10.h3 Nf6 11.Ne2=; (C) 7...a5 8.e5 (8.Rg1 Bh2 9.Rg7 ab4 10.ab4 Ra1 11.Ba1=+) 8...Bf8 9.b5 c5 10.bc6 bc6 11.c4=; (D) 7...Qh4 8.e5 (8.Bd3 0-0-0 9.e5 Be7 10.Nd2 Bg5 11.Qe2=+) 8...Be7 9.Bd3 Bg5 10.Qe2 Ne7 11.Rg1=+.

6.d4 Ngf6 7.Nd2 a5 8.ba5 c5 9.c4 cd4 10.Bd4 Ra5 11.cd5 =+.

6.e3 Qh4 7.f4 (7.Qe2 Ngf6=+) 7...Ngf6 8.Qf3 Be7 (8...0-0-0 9.Bd4 c5 10.bc5 Bc5 11.Bc3=) 9.Rg1 g6 (9...Rg8 10.c4=+) 10.Nc3 (10.Rg3 Qh6= (10...Qh2? 11.Rh3 Qg1 12.Rh1 Qh1 13.Qh1+-)) 10...0-0 (10...0-0-0 11.Qg3 Qh6 12.h3=) 11.Be2 d4 (11...Rfd8 12.h3=) 12.Nb5 (12.ed4 c6+= (12...Qh2 13.Rh1 Qh1 14.Qh1+-)) 12...c5 (12...de3 13.de3 c6 14.Nd4=) 13.bc5 (13.ed4 cb4 (13...Qh2?? 14.Rh1 Qh1 15.Qh1+-) 14.ab4 Nd5= (14...Qh2 15.Rh1 Qh1 16.Qh1+-)) 13...de3 14.de3 Rfd8 (14...Nc5 15.h3=) 15.Rg3 (15.c6 bc6 (15...Qh2?? 16.Rh1 Qh1 17.Qh1 bc6 18.Nd4+-) 16.Nd4 (A) 16...Qh2 17.Rh1 Ne5 18.Rh2 (18.fe5?! Qe5 19.Ra2 Rab8+-) 18...Nf3 19.Bf3+- (19.Nf3?! Ng4 20.Rg2 Rab8+-); (B) 16...Nb8+/–) 15...Qh6 (15...Qh2 (A) 16.Qb7 Nd5 (16...Bc5?! 17.Qf3=) 17.Bf1 Nc5–+; (B) 16.0-0-0 Qh6 17.f5 (< 17.Qb7 Nd5 18.Nc7 Nc5=+) 17...ef5 18.Nd6+=) 16.0-0-0 (better is 16.Nd6!? Nc5 17.Nb7 Nb7 18.Qb7+=) 16...Nc5= (16...Qh2?? (A) 17.Qb7 (A1) 17...Qf2?! 18.Qf3 Qf3 19.Bf3= (< 19.Rf3 Bc5 20.Nd4 h5=+); (A2) 17...Nd5 18.Nc3 (A21) 18...Bc5 19.Nd5 ed5 20.Qd5 (20.Rd5? Qf2 21.Rd7 Qg3–+) 20...Qf2 21.Bc4 Be3 22.Kb1 Qf4 23.Rf3+-; (A22) 18...Qf2?! 19.Rf3 Qg2 20.Nd5 ed5 21.Rd2 (21.Rd5 Qe2 22.Be5 Nc5 23.Rc5 Bc5–+) 21...Bc5 22.Qb3–/+; (A23) 18...Nc5–+; (B) 17.Rh3 Qh3 18.Qh3 Nc5 19.Rd8 Rd8 20.Na7+-) 17.f5 (17.Rd8 Rd8 18.f5 Nfe4=) 17...Nfe4 (better is 17...Rd1 18.Kd1 Qh2 19.fg6 fg6=+) 18.Kb1?? (better is 18.Rg2=) 18...Ng3 (better is 18...Rd1 19.Ka2 Rd2–+) 19.Qg3 Qg5 (19...Rd1!? 20.Bd1 Rd8 21.Bf3–+) 20.fg6 hg6 (21.Bd4 Qh6–/+) 0–1. Ciocaltea,Victor – Bellon Lopez,Juan Manuel, Malaga, 1981.

6.d4 Nd7 A) 7.Nd2 A1) 7...Bd6 8.e3 (8.c4 Ngf6 9.e3 dc4 10.Bc4 Nd5 11.e4 Ne3 12.Qb3 Ng2 13.Ke2=+; 8.e4 Bf4 9.Bd3 0-0-0 10.Qe2 Qh3 11.0-0-0 h5 12.Kb1 h4 13.Qf1=+) 8...Ne7 9.Bd3 Qh3 10.Bf1 Qh5 11.c4 dc4 12.Bc4 Qg6 13.f4=; A2) 7...0-0-0 8.Rc1 (8.c4 Bb4 9.Rc1 Ne7 10.a3 Ba5 11.e3 Nf5 12.Ke2 Bd2 13.Qd2=+; 8.e3 Bd6 9.c4 Ne7 10.c5 Nc5 11.dc5 Bc5 12.Qe2 Nf5 13.0-0-0+=) 8...Ngf6 9.c4 Bd6 10.e3 Nf8 11.c5 Be7 12.c6 Bd6 13.Qa4+-; A3) 7...Bb4 8.e3 (8.c3 Bd6 9.e4 Bf4 10.Bd3 0-0-0 11.Qe2 Qh3 12.0-0-0 de4 13.fe4=+; 8.a3 Bd6 9.e4 Bf4 10.Bd3 0-0-0 11.Qe2 Qh3 12.0-0-0 h5 13.Kb1=+) 8...Ne7 9.a3 Bd6 10.Bd3 e5 11.c4 ed4 12.Bd4 Be5 13.Nb3=; A4) 7...Ngf6 8.e3 (8.c4 dc4 9.Nc4 Bb4 10.Nd2 Nb6 11.a3 Ba5 12.e3 Nbd5 13.Qe2=+) 8...Bd6 9.c4 dc4 10.Bc4 Nb6 11.Bd3 Nfd5 12.Nf1 Bb4 13.Ke2=+; B) 7.e3 B1) 7...Bd6 8.c4 (8.Nd2 Ne7 9.c4 Nf5 10.Qb3 Nf6 11.c5 Be7 12.Qd3 0-0 13.e4=) 8...Ngf6 9.Nc3 Bh2 10.cd5 ed5 11.f4 Ng4 12.Qf3 Ndf6 13.Bh3=; B2) 7...Bb4 8.Nd2 (8.c3 Bd6 9.c4 Ngf6 10.Nc3 Bh2 11.cd5 ed5 12.f4 Ng4 13.Qf3=+) 8...Ne7 9.a3 Bd6 10.Bd3 e5 11.c4 ed4 12.Bd4 Be5 13.Nb3=; B3) 7...Nb6 8.a4 a6 9.ba6 ba6 10.a5 Nd7 11.c4 Ne7 12.Nd2 Nf5 13.Qe2=+; B4) 7...Ngf6 8.Nd2 (8.c4 Bb4 9.Nc3 dc4 10.Bc4 Nb6 11.Qb3 Nc4 12.Qc4 Nd5 13.Ke2=+) 8...Bd6 9.c4 dc4 10.Bc4 Nb6 11.Bd3 Nfd5 12.Nf1 Bb4 13.Ke2=+.

6.d4 Nf6 7.c4 dc4 8.Qa4 (8.a3 c6 9.Qa4 a6 10.bc6 Nc6 11.Qc4 e5 12.e3 ed4 13.Bd4–/+) 8...Nd5 9.Qc4 Bb4 10.Bc3 Bc3 11.Nc3 Ne3 12.Qd3 Nf1 13.Kf1=+.

6.d4 Nf6 7.Nd2 A) 7...a6 8.a4 (8.e3 ab5 9.Bb5 Nbd7 10.Bd3 c5 11.Bb5 c4 12.e4 Bb4 13.c3=+; 8.ba6 Na6 9.e3 Be7 10.c4 0-0 11.Rb1 Rfb8 12.Qb3 dc4 13.Bc4=+; 8.c4 dc4 9.Qa4 c6 10.bc6 Nc6 11.Qc4 Bb4 12.Rd1 Rc8 13.a3=+) 8...Bb4 9.e3 ab5 10.ab5 Ra1 11.Qa1 Bd2 12.Kd2 0-0 13.Be2=+; B) 7...Nbd7 8.e3 (8.c4 dc4 9.Nc4 Bb4 10.Nd2 Nb6 11.a3 Ba5 12.e3 Nbd5 13.Qe2=+) 8...Bb4 9.c4 Qh5 10.Rc1 0-0-0 11.cd5 Nd5 12.e4 Ne5 13.de5=; C) 7...Bb4 8.e3 (8.c3 Bd6 9.e3 c5 10.c4 cd4 11.Bd4 e5 12.Bb2 Nbd7 13.cd5=) 8...Nbd7 9.c4 Qh5 10.Rc1 0-0-0 11.cd5 Nd5 12.e4 Ne5 13.de5=; D) 7...Bd6 8.e3 c5 9.f4 c4 10.Rg1 0-0 11.Qf3 Rc8 12.Qg2 Qh6 13.Bc3=+.

6.d4 Nf6 7.Qd3 c5 (7...Bb4 8.Nd2 (8.c3 Bd6 9.c4 Nbd7 10.c5 Bh2 11.Nc3 Nh5 12.c6 bc6 13.bc6=+) 8...c6 9.c3 Bd6 10.c4 a6 11.c5 Bf4 12.e3 Bc7 13.b6=; 7...Nbd7 8.a3 (8.Nd2 Bd6 9.e4 Bf4 10.Rg1 de4 11.fe4 Ng4 12.Rg2 Nh2 13.Nf3=+; 8.e3 0-0-0 9.c4 dc4 10.Qc4 Nb6 11.Qd3 e5 12.Qb3 ed4 13.Bd4=+; 8.c4 Bb4 9.Bc3 Bd6 10.Nd2 a6 11.ba6 Ra6 12.h3 c5 13.Rg1=+) 8...Nb6 9.Nd2 0-0-0 10.Rc1 Bd6 11.c4 Bh2 12.cd5 Nbd5 13.e4=; 7...Bd6 8.e3 (8.c4 Nbd7 9.cd5 ed5 10.Nc3 Nb6 11.Bg2 a6 12.e4 Bf4 13.e5=+; 8.Nd2 Nbd7 9.e4 Bf4 10.Rg1 de4 11.fe4 Ng4 12.Rg2 Nh2 13.Nf3=+; 8.h3 Nbd7 9.Rg1 Rg8 10.c4 dc4 11.Qc4 Nd5 12.e4 Ne3 13.Qe2=+) 8...Bh2 9.c4 Nbd7 10.cd5 ed5 11.Nd2 Nb6 12.Bg2 Nc4 13.Nc4+-; 7...a6 8.e3 (8.ba6 Ra6 9.Nd2 Nc6 10.e4 de4 11.fe4 Nb4 12.Qb5 Rc6 13.Bd3=+; 8.c4 ab5 9.cd5 Bb4 10.Nd2 Nd5 11.e4 Nb6 12.a3 Bd2 13.Qd2–/+; 8.Nd2 c5 9.dc5 Bc5 10.e3 0-0 11.c4 ab5 12.cd5 Rd8 13.Rc1=+; 8.Qb3 ab5 9.Qb5 Nbd7 10.e3 Ra7 11.c4 Bd6 12.Nc3 c6 13.Qb3=+) 8...Bb4 9.Bc3 Bd6 10.ba6 ba6 11.Nd2 Nbd7 12.Rb1 0-0 13.Be2=+) 8.Nd2 (8.c4 Nbd7 9.cd5 Nd5 10.e4 Nf4 11.Qe3 cd4 12.Bd4 e5 13.Bc3–+; 8.dc5 Bc5 9.e3 0-0 10.Nd2 a6 11.c4 ab5 12.cd5 Rd8 13.Rc1=+) 8...Nbd7 (8...c4 9.Qc3 a6 10.ba6 Ra6 11.a3 Nc6 12.e4 b5 13.Qe3–/+) 9.e4 (9.dc5 Bc5 (9...Rc8 10.c4 Bc5 11.e3 0-0 12.cd5 ed5 13.Ke2=+) 10.e3 e5=+ 11.Rd1 0-0 12.Nb3 Rfe8 13.Be2–/+) 9...cd4–/+ 10.Bd4 e5 11.Bb2 Bc5 12.Qe2 (12.ed5 Qf2 13.Kd1 Be3–/+) 12...de4 13.Ne4 (13.0-0-0 ef3 14.Nf3 Qf4 15.Kb1 e4–/+) 13...Ne4–+ 14.fe4 Bf2! 15.Kd1 (15.Qf2 Qe4) 15...Nc5 16.Be5?? (better 16.Qf3 Rd8 17.Bd3–+) 16...0-0-0 17.Kc1 Qg5 18.Kb1 Qe5 19.Bh3 (19.a3 Na4 20.Qc4 Kb8 21.c3 Nc3 22.Kc2–+) 19...Kb8 20.Qf2 Ne4 (20...Ne4 21.Qg3 Ng3 22.hg3 Qb5 23.Kc1 Qg5 24.Kb2 Qe5 25.Kb3 Qb5 26.Kc3 Rhe8–+) 0–1. Langschmidt,Dirk (2100) – Raap,Christian (2285), RSLE, 2010. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.gf3 e6)

6.d4 Nf6 7.e3 A) 7...Bd6 8.c4 Nbd7 9.Nc3 Bh2 10.cd5 ed5 11.f4 Ng4 12.Qf3 Ndf6 13.Bh3=; B) 7...Nbd7 8.Nd2 (8.c4 Bb4 9.Nc3 dc4 10.Bc4 Nb6 11.Qb3 Nc4 12.Qc4 Nd5 13.Ke2=+) 8...Bb4 9.c4 Qh5 10.Rc1 0-0-0 11.cd5 Nd5 12.e4 Ne5 13.de5=; C) 7...Bb4 8.c3 (8.Nd2 0-0 9.a3 Ba5 10.c4 a6 11.Rc1 Rd8 12.Bc3 Bc3 13.Rc3=+) 8...Bd6 9.c4 Nbd7 10.Nc3 Bh2 11.c5 h5 12.Bd3 Nf8 13.Rb1=; D) 7...a6 8.Nd2 (8.ba6 Na6 9.c4 Bb4 10.Bc3 c5 11.Qa4 Ke7 12.Qb3 b6 13.Bb4=+; 8.Ba3 ab5 9.Bb5 Nbd7 10.Bf8 Rf8 11.Nd2 c6 12.Bd3 e5 13.c3–/+) 8...Bd6 9.c4 dc4 10.Bc4 0-0 11.Qb3 ab5 12.Bb5 Na6 13.a3=+.

6.e3 Nd7 (6...Nf6 7.c4=+) 7.f4 (7.a4 Ngf6=+) 7...Ngf6 8.Qf3 a6 (8...0-0-0 9.Bd4=+) 9.a4 (9.ba6 ba6 10.Nc3 Rb8=+) 9...ab5 (9...Nc5 10.Nc3=+) 10.ab5 Ra1 11.Ba1 Be7 (11...Bd6 12.Qg3 Qg3 13.hg3=+) 12.Rg1 (12.Nc3 Nb6=) 12...0-0=+ (12...Qh2? 13.Rh1 (13.Rg7?! Qh6 14.Rg3 Qf8=) 13...Qh1 14.Qh1+-) 13.Qg2 g6 14.Bd3 (14.Bd4 Ra8=+) 14...Ra8 15.Bd4 Bc5 (15...c5 16.bc6 bc6 17.c4=+) 16.Bc5 (better is 16.Qg5!? Qg5 17.fg5 (< 17.Rg5 Bd4 18.ed4 Ra1–+) 17...Bd4 18.ed4=+) 16...Nc5–/+ 17.Ke2 (17.h3 Nd3 18.cd3 Kg7–/+) 17...d4 (better is 17...Nd3 18.Kd3 e5–/+) 18.c4? (18.Bc4 de3 19.fe3 Qh5 20.Qf3 Qh2 21.Rg2 Qh4–/+) 18...Rd8 (better is 18...Qh5 19.f3 de3 20.Ke3 Nd3 21.Kd3 Qc5–+) 19.Qg5–/+ Qg5 (19...Qh5 20.Qh5 Nh5 21.Rd1–/+) 20.fg5=+ Nh5 (< 20...Nd3 21.Kd3 de3 22.Ke3+=) 21.Rd1 e5 22.f3 Ng7 (22...f6 23.gf6 Nf6 24.Na3=+) 23.Na3 (23.Be4 d3 24.Kf2 Ne4 25.fe4 Ne6=+) 23...Nge6 24.h4 Ra8 (24...f5 25.gf6 Kf7 26.Be4–/+) 25.Ra1?? (better is 25.Nb1=+) 25...Nb3–+ (26.Rb1 Ra3–+; 25...Nd3?! 26.Kd3 h6 27.gh6 Nc5 28.Kc2=+) 0–1. Simms,Gary – Benko,Pal C, Las Vegas op, 1975.

6.Be5 Kd8 =+.

6.a3 Bd6 7.Nc3 =+.

6.a3 Bd6 7.Rg1 0-0 8.f4 c5 9.bc5 Bc5 10.Qf3 Nc6 11.d4 (11.Qg2 g6=) 11...Qb6=+ 12.Bc3 Be7 13.Qg3 g6 14.Bd3 Na5 15.f5 ef5 16.Bf5 Nc4 17.Qf3 Qc6 18.Bb4 Bb4 19.ab4 Qb6 (20.c3 Qc7=; 19...Qd6 20.Ra4=+). marekt – JF_, ChessWorld.net, 2004.

6.a3 Be7 7.Rg1 (7.Qe2 Nbd7=+) 7...0-0=+ 8.f4. pcmvr (2515) – cambiodedamas (2000), net–chess.com, 2006.

6.a3 g6 7.c4= Bg7 (7...c6 8.Nc3=) 8.d4 0-0 9.Nd2 Nc6 (9...c6 10.Rg1=) 10.Rc1 (10.Rg1 a6=) 10...a5 (10...Ne7 11.Qc2=) 11.b5 Ne7 12.c5 (12.Bd3 Kh8=) 12...c6 (12...b6 13.Rg1=) 13.bc6 (13.Qa4 cb5 14.Bb5 Qc7=) 13...bc6 14.Bd3 (14.Qa4 Nd7=) 14...a4 (14...Nd7 15.Qa4=) 15.f4 Nd7 (15...Qa5 16.Bc3 Qa7 17.Rb1=) 16.Bc3 (16.Rg1 Qa5=) 16...Kh8 (16...Qc7 17.h4=) 17.Bb4 f6 (17...Nf6 18.Bc2+=) 18.h4+= h6 19.Nf3 (19.Rg1 e5 20.h5 g5=) 19...e5= 20.Bc2 (20.fe5 fe5 21.de5 Ne5 (< 21...Be5 22.Ne5 Ne5 23.Bc3+/–) 22.Ne5 Be5=) 20...ef4 21.ef4 Qc7 22.h5 Qf4 23.Rh4 Qc7 24.hg6 Rae8 25.Kf1 f5 26.Qd2 Kg8 27.Rh6 Nf6 28.Qg5 Ne4+/– 29.Qh4 Bh6 30.Qh6+- Nc8 31.Ba4 Rf6 32.Ne5 Qg7 33.Qg7 Kg7 34.Nc6 Rh8 35.Ke2 Rh2 36.Be1 f4 37.Ne5 Ra6 38.Bb3 Ra3+/– 39.Rb1 Ne7+= 40.Nf3 Rg2 41.Kf1 Rg6 42.Ne5 Rh6 43.Kg2 Ra7 44.f3 Ng3 45.Bg3+/– fg3 46.Kg3 Nf5 47.Kf4 Nd4 48.Bd5 Ne2 49.Ke3+- Rh2 50.c6 Ra3 51.Rb3 Rb3 52.Bb3 Ng3 53.Ng4 Rb2 54.Bd5 Nf5 55.Kf4 Ne7 56.Be4 Rb4 57.Ke5 Re4 58.fe4 Nc6 59.Kd6 Nd4 60.e5 Nf3= ½–½. Juswanto,Denny (2465) – Ehlvest,Jaan (2590), INA–ROW m Bali, 1999.

6.a3 g6 7.d3 c6 8.Nd2 Nbd7 9.f4 a5 10.c3 Bd6 11.Bh3 (11.Rg1 ab4 12.ab4 Ra1 13.Ba1 h6=) 11...Qe7 12.Nb3 ab4 13.ab4 0-0 14.0-0 e5 15.Bd7 Nd7 16.Qf3 ef4 17.ef4 Qf6 18.Na5 (18.Qh3 Nb6 19.Ra8 Ra8–/+) 18...Rab8 19.Rab1 (19.Qg4 Rfd8–/+) 19...Bf4–+ 20.Qh3 Qd6 (20...Ne5 21.Kg2–+) 21.Nb3 Ne5 22.Kh1 Rfe8 23.Nd4 h5 24.Rg1 Ng4–+ 25.Rg4? hg4 26.Qg4 Qf6 27.Rg1 Re5 28.Nf3? Re2 (29.Rb1 Ra8–+) 0–1. Saradjen,Janko (2165) – Doric,Darko (2305), Portoroz op, 2004.

6.a3 g6 7.e4 Bg7 =+.

6.b5 Nbd7 7.Nc3 Qe7 =+.

6.b5 Nbd7 7.c4 dc4 8.Bc4 Nb6 9.Be2 =+.

6.b5 Nbd7 7.c4 c6 8.Nc3 Bd6 (8...dc4 9.bc6 bc6 10.Bc4=) 9.cd5 (9.bc6 bc6 10.d4 Rb8=+) 9...cd5 10.f4 0-0 (10...Rc8 11.Rg1 0-0 12.Qf3=+) 11.Rg1= Rc8 12.Qf3 g6 (12...Kh8 13.Be2=+) 13.h4 (13.Rc1 Nb6=) 13...h5 (13...Qe7 14.a3=+) 14.Bd3 (14.Be2 Qb6=) 14...Ng4=+ 15.Rg4 (15.Be2!?=+) 15...hg4–/+ 16.Qg4 Nf6 17.Qg2 Qe7 18.h5 (18.a3 Kh7–/+) 18...Nh5 19.Nd5?? (better is 19.a3–/+) 19...ed5–+ 20.Bg6 (20.Be2 Nf6 21.Qg5–+) 20...fg6 21.Qg6 Ng7 22.Ke2 Rf4 (better is 22...Rf7 23.Rh1 Qd7 24.Kd1–+) 23.Bg7 Qf7 (23...Qg7?! 24.Qe6 Rf7 25.Qc8 Bf8 26.d4–/+) 24.Qg2 Qg7 (better is 24...Qe6 25.Rg1 Kf7–+) 25.Qd5?? (25.Qg7 Kg7 26.ef4 Re8 27.Kd3 Bf4 28.a4–+) 25...Rf7 26.Qd6 (26.Qe6 Rd8 27.d4 Qg2–+) 26…Qa1 (27.a3 Qa2 28.Qg6 Rg7–+) 0–1. Miltner,Arndt (2310) – Werner,Marc (2335), BL2–S, 1994.

6.b5 Nbd7 7.Rg1 e5 =+.

6.b5 Be7 7.c4 (7.Nc3 0-0=) 7...c6 (7...0-0 8.Rg1=) 8.Rg1 (8.Nc3 0-0=) 8...0-0+= 9.cd5 (9.Nc3!?+=) 9...cd5= (worse 9...Qd5 10.f4+=) 10.Nc3 (10.f4 Nbd7=) 10...Nbd7 11.Rc1 (11.Na4 Rc8=+) 11...Rc8 12.d4 (12.Qa4 Ne5 13.Be2 Qb6=+) 12...Nb6=+ 13.e4 (better 13.Qb3!?=+) 13...de4–/+ 14.fe4 Bb4 15.Bg2 (15.a3 Ba5 16.e5–+; better 15.a3!? Ba5 16.f3–+) 15...Rc4 16.a3 Black creates threats along the open d–file. 16...Rd4 17.Qe2 Ba5 18.Ba1 (18.e5 Nfd5 19.Bd5 Qd5 20.Kf1 Bc3 21.Bc3–+) 18...Na4 19.Bh1 Nc5 20.Rc2 (20.Kf1 Nb3 21.Qe3 Nc1 22.Qc1 Bc3 23.Qc3 e5–+) 20...Nfe4 21.Rg4 (21.b6 ab6 22.Bf3 Rd3 23.Be4 Ne4 24.Qe4 Rd1 25.Ke2 Rg1–+) 21...f5 22.Rg3 (22.Rg1–+) 22...Ng3 23.hg3 f4 24.Kf1 (24.g4 Qd7 25.Bf3 Rd3–+; 24.g4 Rd3 25.Bf3 Qd4–+) 24…fg3 (24...fg3 25.f3 Rd3–+; 24...fg3 25.f3 Rd3–+) 0–1. Schubert,Mario – Baer,Lutz, 2001.

6.c4 Bb4 7.Qb3 Nc6 8.a3 =+.

6.c4 Nbd7 7.cd5 ed5 8.a3 (8.Rg1 Rg8 9.a3 Bd6=) 8...c6 (8...a5 9.b5=+) 9.Nc3 (9.Rg1 Rg8=) 9...Bd6 10.Bh3 (10.f4 0-0=+) 10...Ne5 (10...a5 11.b5=+) 11.d3 d4 12.ed4 Ng6 13.Qe2 Be7 14.Bf5 0-0 (< 14...Qd4 15.Ne4 Qd8 16.Nf6 gf6 17.Bf6+=) 15.h4 (15.0-0 Re8 16.Qc2 a5=+) 15...Nf4 16.Qd2 N6d5 (16...Qd4?! 17.Ne2 Ne2 18.Bd4 Nd4 19.Qf4 Nc2 20.Kd2 Na1 21.Ra1=) 17.0-0-0 (17.b5 cb5 18.Kd1 Nc3 (18...Bh4?! 19.Nd5 Nd5 20.Be4=+) 19.Qc3 Re8–/+ (19...Bh4?! 20.d5 Bf6 21.Bh7 Kh8 22.Qb4 Bb2 23.Qb2=)) 17...a5 18.Rdg1 (18.Nd5 Nd5 19.b5 Bd6–+ (19...Bh4 20.Rdg1 Qf6 21.Bh7 Kh7 22.Rg4+=)) 18...Bd6 (18...ab4 19.Nd5 Nd5 20.Rg7 Kg7 21.Rg1 Bg5 22.ab4–/+) 19.b5 Qf6 (19...Nc3 20.Bc3 Ba3 21.Kc2–+) 20.Ne4 (20.Be4!?–/+) 20...Qf5–+ 21.Nd6 Qe6 22.Ne4 cb5 23.Rg5 (23.Kd1 b6–/+) 23...f6 24.Rg4 (24.Rg3 b4 25.Kd1 Qe8–+) 24...f5 (24...Qc6 25.Kd1 f5 26.Rgg1–+) 25.Rf4 (25.Nc5 Qd6 26.Rg5–+) 25...Nf4 (25...fe4 26.Rf8 Rf8 27.de4+=) 26.Nc5 Qd6 27.Nb7 (27.Kd1 Nd5–+) 27...Qc6 28.Nc5 Qf3 29.Rg1 (29.Re1–+) 29…Ne2 (30.Kb1 Ng1–+) 0–1. Volke,Karsten (2470) – Schlosser,Philipp (2550), BL, 1993.

6.Qe2 Bb4? 7.Qb5 Nbd7 8.Qb4 +-.

6.Qe2 c6 7.a3 Bd6 =+.

6.Rg1 Rg8 7.a3 Bd6 =+.

7.b5 c5 8.c4 (8.Rg1 Nbd7=) 8...d4= 9.f4 Qb6 10.a4 (10.Bg2 Nbd7=) 10...Nbd7 (10...Bd6 11.Bg2=+) 11.d3 g6 (11...e5 12.Qe2 ef4 13.ed4 Be7 14.Bg2=) 12.Nd2 Bg7 13.Nb3 (13.Bg2 Nh5 14.Qb3 0-0=) 13...Nh5 (13...de3 14.fe3 0-0 15.Rg1=) 14.Qd2 0-0 15.0-0-0 (15.Be2!? de3 16.fe3 Bb2 17.Qb2=) 15...Qc7 16.Be2 de3 (16...Nhf6 17.Kc2=) 17.fe3= Bb2 18.Kb2 Ng7 19.h4 h5 (19...Nb6 20.Ra1=) 20.e4+= Rfe8 (20...Rad8 21.Qe3+=) 21.Rdg1 (21.Rhg1 b6+=) 21...b6 22.Rg5 Nf6 (22...Rad8 23.Bf3+=) 23.Qe3 (23.Rg2 Red8 24.Qc3 A) 24...Qf4? 25.Rf1 Ne4 26.Rf4 (26.de4?! Qh4 27.Qe5 Rd7+-) 26...Nc3 27.Kc3+-; B) 24...Qe7+=) 23...Rad8= 24.Nd2 (24.Rd1 Kh7=) 24...Qe7 (24...Re7 25.Rd1=) 25.Kc2 (25.e5 Nh7 26.Rgg1 Nf5=) 25...Rd7 (25...Kh8 26.Kb2=) 26.Nf3+= White launches an attack 26...Ng4 27.Qg1 Qf6 (27...Rf8 28.Ne5 Ne5 29.fe5+=) 28.Ne5 Ne5 29.fe5 Qd8 30.Rh3 (30.Qf2 Qc8+=) 30...Kh7 31.Rhg3 Qe7 32.Qd1 Red8?? (better 32...Rh8+=) 33.Bh5!+- Nh5?? (33...gh5 A pinning theme 34.Rg7 Annihilates a defender: g7; 33...Rh8 34.Be2 Kg8+-) 34.Qh5!!+- Kg8 (34...gh5 35.Rh5 The nicest combinations are those leading to mate) 35.Rg6! fg6 36.Qg6 Qg7 37.Qe6 Kh7 (37...Rf7 38.Rg7 Kg7 39.Qb6+-) 38.Rg7 Kg7 (38...Rg7 39.Qb6 Rc8+-) 39.Qf6 Kh7 40.e6 Rd3 41.Qf7 Kh6 42.Qf4 (42.Qf4 Kg7 43.Qg5 Kf8 44.e7 Ke8 45.ed8R Rd8 46.Qg6 Kd7 47.Qf7 Kc8 48.Qe6 Rd7 49.h5+-; 42.Qf4 Kg7 43.Qg5 Kf8 44.e7 Ke8 45.ed8Q Rd8 46.Qg6 Kf8 47.Qb6+-) 1–0. Ramkrishna,Kashelkar (2185) – Rahul,Shetty (2335), Rochess Open Rating, 2001.

7.Qe2 =+.

8.d4 a4 A) 9.c4 dc4 10.Bc4 Nb6 11.Bd3 Bd6 12.f4 Nfd5 13.Nc3=; B) 9.Bd3 B1) 9...Be7 10.e4 (10.Rg1 0-0 11.e4 c5 12.bc6 bc6 13.Qc1=+) 10...0-0 11.Rg1 c5 12.bc6 bc6 13.Qc1=+; B2) 9...c5 10.bc6 bc6 11.Nd2 c5 12.dc5 Nc5 13.Bb5=; B3) 9...Bd6 10.e4 (10.Rg1 0-0 11.e4 Bf4 12.h3 e5 13.c4=+) 10...e5 11.Rg1 0-0 12.Qd2 ed4 13.Qh6=+; C) 9.Nd2 Be7 (9...Bd6 10.c4 0-0 11.c5 Be7 12.Rg1 Kh8 13.e4=) 10.Rg1 (10.e4 0-0 11.c4 Nh5 12.Qc2 dc4 13.Nc4=) 10...0-0 11.c4 dc4 12.Nc4 Nd5 13.Bd3=.

8.d4 Nb6 9.Nc3 Bd6=+.

8.d4 Nb6 9.Nd2 Na4=+ 10.Qb1 (10.Qc1 c5 11.bc6 bc6 12.Rb1 Bd6 13.Ba1=) 10...c5 11.c4 (11.dc5 Bc5 12.Be5 Bd6 13.Bd6=+) 11...dc4 (11...Nb2 12.Qb2 cd4 13.Qd4=+) 12.Nc4 Nb2 13.Qb2 cd4 14.Rd1 (14.Qd4 Qd4 15.ed4 Be7=+) 14...Bc5–/+ 15.ed4 (15.f4 Nd5 16.Bg2 0-0–/+) 15...Bd6 16.Ne5 (16.Bd3 Bf4–/+) 16...0-0 17.Rg1 (17.Bc4 Qe7 18.a4 Nh5–+) 17...Nd5 (17...Qe7 18.Bc4–+) 18.h3 (18.Bc4!?–/+) 18...Qe7–+ 19.Nc4 (19.Ra1 Rfd8–+) 19...Bf4 20.Bd3 (20.a4 g6–+) 20...Qh4 (20...Rfc8 21.a4–+) 21.Ke2 (21.Be4 Rfc8 22.Qb3 a4–+) 21...Rac8 22.Rdf1 (22.Rh1 Qh5–+) 22...Bh2 (22...Rfd8 23.Ke1–+) 23.Rh1 (23.Rg4 Qh6 24.Qd2 Bf4–+) 23...Bb8 24.Rhg1 (24.Rfg1 Nf4 25.Ke3 Qf6–+) 24...Nf4 (24...Qh3 25.Rh1 Bh2 26.Qd2–+) 25.Kd2 (25.Ke3 Qh6 26.Kd2 Nh3 27.Ke1 Ng1 28.Rg1 Qh2–+) 25...Qh5 26.d5 (26.Rg4 Nd3 27.Kd3–+) 26…g6 (26...g6 27.Ne3 Be5–+ (27...ed5?! 28.Nf5 f6 29.Ne7 Kf7 30.Nc8 Rc8 31.Rg4–+; 27...Qh3?! 28.Be4 Qh6 29.Ng4–+; 27...Nd3?! 28.Kd3 Be5 29.Qa2–+); 26...g6 27.Ne3 Be5–+) 0–1. Bazza3 – michaelbuss, ChessWorld.net, 2005.

8.d4 Nb6 9.Bd3 A) 9...Be7 10.Rg1 (10.e4 0-0 11.Rg1 Na4 12.Bc1 de4 13.Bh6=) 10...0-0 11.e4 Na4 12.Bc1 de4 13.Bh6=; B) 9...Qd6 10.Nd2 (10.Qe2 Na4 11.c4 Nb2 12.Qb2 dc4 13.Bc4=) 10...Na4 11.Qc1 Nb2 12.Qb2 Qb6 13.c4=; C) 9...Qd7 10.Rg1 (10.Bc3 a4 11.Rg1 g6 12.e4 0-0-0 13.e5=+) 10...Nc4 11.Bc4 dc4 12.a4 c6 13.bc6=+.

8.d4 Nb6 9.f4 A) 9...Qd7 10.Rg1 (10.Nd2 Na4 11.Qc1 Nb2 12.Qb2 Be7 13.Rg1=) 10...a4 11.Nd2 Kd8 12.Nf3 Ne4 13.Bd3=; B) 9...Qc8 10.Rg1 (10.Bd3 Qd7 11.Qf3 Bd6 12.Rg1 g6 13.h3=+) 10...Qd7 11.Nd2 Na4 12.Qc1 Rc8 13.c4=; C) 9...Be7 10.Rg1 (10.Bd3 Qd7 11.Rg1 g6 12.Qe2 Na4 13.Bc1=) 10...0-0 11.Qf3 Kh8 12.Bd3 Qd7 13.h3=.

8.d4 Nb6 9.Rg1 A) 9...a4 10.Nd2 Qd6 11.Rg2 Rg8 12.c4 dc4 13.Nc4=; B) 9...Qd6 10.Rg2 (10.Rg3 g6 11.Bd3 0-0-0 12.Nd2 Na4 13.Qc1=) 10...Qd7 11.Bd3 Rg8 12.Nd2 Na4 13.Qb1=; C) 9...Qd7 10.Nd2 (10.Bd3 Nc4 11.Bc4 dc4 12.a4 c6 13.bc6=+) 10...Qd6 11.h3 Na4 12.Qc1 Qh2 13.Rg3=.

8.d4 Bd6 9.c4 dc4 10.Bc4 (10.e4 Bf4 11.Bc4 Nb6 12.Bd3 Rc8 13.Qc2=) 10...Nb6 11.Bd3 Nfd5 12.f4 Qh4 13.Qf3=.

8.d4 g6 9.Nd2=.

8.Rg1 g6=.

7.Nc3 e5 =.

7.c4 dc4 8.Bc4 a5 (8...Nb6 9.Be2=+) 9.ba5 Ra5 10.d4 Nb6 (10...Bd6 11.Nc3=+) 11.Bb3 (11.Bd3 Bd6=+) 11...Be7 (11...Bd6 12.e4 Bf4 13.Nc3=+) 12.Rg1 0-0 13.Qd2 (13.f4 c6=+) 13...Rf5 (13...Rb5 14.Qc2=+) 14.Qe2 (14.f4 Qd7=+) 14...Qd6 (14...Rh5 15.f4=+) 15.f4 Qc6 (15...Ra5 16.Qf3 Rb8 17.Nd2=) 16.Nd2= Ra8 17.Rc1 Qd7 18.Qf3 c6 19.d5 (19.e4 Rfa5 20.Rc5 R5a7= (< 20...Bc5 21.dc5 Rc5 22.Bf6 Rc1 23.Bd1+/–)) 19...Ba3 20.dc6 (20.Ba3 Ra3 21.e4 Ne4 22.Ne4 Nd5=+ (< 22...cd5 23.Qg4 g6 24.Qf5 de4 25.Qh3+/–)) 20...bc6 21.Ba3 Ra3 22.Qc6 Qc6 23.Rc6 Rb5 24.Bd1 ½–½. Bonetti,Shane – Schulz,Hans_Juergen, TT–13.04 ETC, 2004.

7.c4 c6 8.d4 Bd6 9.Nd2 e5 10.Be2 Qe7 11.Qc2 a5 12.c5 Bc7 13.Nb3 ab4 14.ab4 0-0 15.0-0 Qe6 16.de5 Ne5 17.f4 (17.Kg2 Ng6 18.Rg1 Nh4 19.Kh1 Ra1 20.Ba1 Qh3=) 17...Ra1 18.Ra1 Ne4 19.Nd4 (19.fe5? Qg6 20.Bg4 Qg4 21.Kf1 Qh3 22.Kg1 f6–+) 19...Qg6 20.Kf1 Nd7? (20...Ng4 21.Bg4 Qg4+/–) 21.f3+- f5? (21...Nef6 22.Qg6 hg6 23.Ra7+/–) 22.Bd3 (22.fe4!? fe4 23.Ra7 Be5+-) 22...Qh6 (22...Nef6 23.Bf5 (23.Nf5?! Qe8+/–) 23...Qh5 24.Qg2+-) 23.Qg2 (23.Be4 fe4 24.fe4 Qh3 25.Qg2 Qe3+/–; 23.fe4 fe4 24.Be2 Qh3 25.Kf2 g5+/–) 23...Rf6 24.fe4 fe4 25.Be2 Nf8 26.Ra8 (better is 26.Bg4 Bf4 27.ef4 Qf4 28.Ke2 Rg6+-) 26...Bf4 (26...Be5+-) 27.ef4 Qf4 28.Ke1 e3 29.Kd1 Qe5 (29...Qf2 30.Qg5 Rg6 31.Qe7 Rg1 32.Kc2+-) 30.Qg3 (30.Bg4!? Qe7+-) 30...Qe4 31.Kc1 (better is 31.Nc2!? Qh1 32.Qe1 Qe1 33.Ke1 Re6+-) 31...Rg6 32.Qf3 (better is 32.Qe1+-) 32...Rg1= 33.Bd1 Qf3 34.Nf3 e2 35.Ng1 e1Q 36.Ne2 (36.Bd4 Qb4 37.Nf3 Kf7 38.Ne5 Ke7+=) 36...Qb4+= 37.Bd4 Kf7 38.Ra4 Qb5 39.Nc3 Qf1 40.Kb2 (40.Ne2!?–/+) 40...Ne6 41.Bc2 Qg2 42.Kb3? (42.h4 Qg3–+) 42...Nd4 (better is 42...Qd2!? 43.Bg1 d4 44.Rc4 dc3 45.Rc3–+) 43.Rd4 Qh2 44.Rb4 Qc7 (44...Kf6 45.Rb7 Qf2 46.Bh7 Qc5 47.Bd3–+) 45.Bh7 g5 46.Bf5 (46.Na4!?–+) 46...Kf6 47.Bg4 Qg3 48.Bc8 Qe3 49.Kb2 (49.Bb7 Qc5 50.Na4 Qe3 51.Ka2 c5–+) 49...d4 (49...Qc5 50.Rb7 Qe3 51.Rh7–+) 50.Nb1 (50.Na4 d3 51.Nc3 Kg6–+) 50...d3 51.Rb7 (51.Nc3 Kg6 52.Rb7 Qc5 53.Kb3–+) 51...Qd4 52.Nc3 d2 53.Rd7 d1N (53...d1N 54.Kc1 Qc3 55.Kd1 Qc5–+) 0–1. Krivoshapko,Alexander – Artemiev,Vladislav, Half Omsk, 2009.

7.c4 g6 8.cd5 (8.Rg1 Bg7=) 8...ed5 9.Bf6 (9.Nc3 c6=) 9...Nf6+= 10.Qa4 c6 11.b5 Qd6 12.d4 Be7 13.Bd3 0-0 14.bc6 bc6 15.0-0 c5 16.dc5 Qc5 17.Ra2 d4 18.Qd4 Qg5 19.Kh1 Rfd8 20.Qc4 Rac8 21.Qb3 Qh4 (21...Rb8 22.Qc4–/+) 22.Be2+= Qh3 23.Qb7 (23.Nd2 Nd7+=) 23...Rd5 (23...Nd5 24.Rd2 Rc7 25.Qb2+=) 24.f4+= (24.Qe7 Rg5 25.Qd8 Rd8 26.Rg1 Rdd5 27.f4 Ng4 28.Rg2 Nh2 29.Rh2 Rd1 30.Bd1 Qf1) 24...Bd6 25.Nd2 Rb8 26.Qc6 (26.Qa7?? Rd2 27.Qd7 Qd7 (27...Ra2?! 28.Qh3 Re2 29.Qf3–/+) 28.Rd2 Ne4–+) 26...Rb6 (26...Rd8 27.Nf3=) 27.Qc4 Rg5 (27...Rc5 28.Qd4 Be7 29.Rg1=) 28.Rg1 Rg1 29.Kg1 g5 30.Ra1 (30.Rc2 gf4 31.Qc8 Qc8 32.Rc8 Bf8=) 30...gf4= 31.ef4 Rb2 Attacks the isolani on a3 (better is 31...Qf5!? 32.Bd3 Qf4 33.Qf4 Bf4=) 32.Qd4+/– Ng4 (32...Ba3? 33.Bf1 (33.Qf6?! Rd2 34.Qg5 Kf8+=) 33...Rd2 34.Qd2 (34.Bh3?! Rd4 35.Ra3 Rf4=) 34...Qg4 35.Kh1+-) 33.Bg4 Qg4 34.Kh1 Rd2 (34...Qf4?? 35.Rg1 Qg3 36.hg3+-) 35.Qd2 Qf3 36.Kg1 Bf4 (better is 36...Qg4 37.Kf1 Qh3 38.Ke1 Qh2+/–) 37.Qd1?? (better is 37.Qd8 Kg7 38.Qd4 f6 39.Rb1+- (worse is 39.Qa7 Kg6 40.Qc5 Qg4 41.Kf1 Bh2+-)) 37...Bh2= 38.Kh2 Qf2 39.Kh1 Qh4 40.Kg2 Qg5 41.Kf3 Qf5 42.Ke3 Qe5 43.Kd3 Qd5 44.Kc2 Qc5 45.Kb1 Qb6 46.Kc1 Qc5 47.Qc2 Qg1 48.Kb2 Qb6 49.Ka2 Qe6 50.Kb1 Qb6 51.Qb2 Qg6 52.Qc2 Qb6 53.Kc1 Qg1 54.Qd1 Qc5 55.Kb1 Qb6 56.Kc2 Qc5 57.Kb3 Qb6 58.Kc4 Qc6 59.Kd4 Qd6 60.Ke4 Qe6 61.Kf4 Qf6 62.Kg4 Qe6 63.Kh4 Qe7 64.Kg3 Qe3 65.Kg2 Qg5 66.Kf3 Qf5 67.Kg3 Qe5 68.Kf2 Qf4 69.Ke2 Qe4 70.Kd2 Qd4 71.Kc2 Qc5 72.Kb2 Qb6 73.Qb3 Qf2 74.Kc1 Qg1 75.Kb2 Qf2 76.Kb1 Qe1 77.Ka2 Qe2 78.Qb2 Qe6 79.Kb1 Qg6 80.Kc1 Qg1 81.Kc2 Qf2 82.Kc3 Qf6 ½–½. Fernandez,Daniel Howard (2400) – Wells,Peter K (2455), Cardiff WLS, 2014. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.gf3 e6 5.e3 Nf6 6.a3 Nbd7)

7.f4 a6 8.Rg1 =.

7.f4 c5 8.bc5= Bc5 9.Rg1 Rg8 10.c4 d4 11.Qb3 Qc7 12.Qd3 (12.Bg2 0-0-0=) 12...e5 13.ed4 ed4 (13...Qb6 14.dc5 Qb2 15.Qc3 Qc3 16.Nc3+=) 14.Bd4= Bd4 15.Qd4 0-0-0 (15...a6 16.Bg2=) 16.Qa7+= Qf4 17.Nc3 Rge8 18.Be2 (18.Ne2 Qh2 19.Qa8 Kc7 20.Qa5 Kb8 21.Rg7 Ne5=+) 18...Ne5 19.0-0-0 Nc6 20.Qa8 Kc7 21.Nb5 Kb6 22.Qa4 g5 (22...Re5 23.f3 Nd4 24.Qa7 Kc6 25.Nd4 Rd4 26.Rg2+=) 23.Qb3 (23.c5 Kc5 24.Qf4 gf4 25.Rg5 Kb6=) 23...Re5 24.Rg3 (24.Rge1 Ng4 25.Bg4 Re1 26.Nd6 Kc7=) 24...Na5 25.Qb4 Nc6 26.Qb2 Re2 27.Nd4+- Ka7 28.Ne2 Qc4 29.Qc3 Qa2?? 30.Qb3 Qb3+/– 31.Rb3 Ne4 32.f3 Nf2 33.Rf1 Nd3 34.Kd1 Na5 35.Rc3 Nb2 36.Kc1 Na4 37.Rc7 f6 38.f4 gf4 39.Rf3 h6 40.Nf4 Kb8 41.Ne6 Re8+= 42.Rf6 Re6 43.Re6 Nb3 44.Kb1 Kc7= 45.Rh6 Nd2 46.Kc2 Nf3 47.h4 Nd4 48.Kc1 Nf5 49.Rg6 Nh4?? 50.Rg4+- b5 51.Rh4 Kb6 52.Rh5 Nc5 53.Kc2 Na6 54.Rh6 Ka5 55.Kc3 Nc5 56.Rh8 Na6 57.Ra8 Kb6 58.Kd4 Ka5 59.Kd3 Kb6 60.Kc3 Ka5 61.Ra7 ½–½. Benassi,Aspasio – Benedetto,Giuseppe, CEM5EA, 2001.

7.Rg1 Rg8 =+.

6.a3 de4 7.fe4 Ne4 8.Bg2 Nd6 9.Qg4 Nd7 10.d3 (10.Bg7?? Rg8 11.Rg1 Bg7–+) 10...c6 11.Nd2 (11.Bg7?? Rg8–+) 11...Nf5 12.Nc4 h5 13.Qf4 Be7 14.Bh3 g5 15.Qd2 Rh6 (15...Nh4!? 16.Qe2 Rh6–/+) 16.Bf5+= ef5 17.f4 (17.0-0!?+=) 17...Re6–/+ 18.Kd1 g4 19.h3 Qc7 (19...Nb6!? 20.Nb6 Qb6 21.hg4 hg4–+) 20.hg4 hg4 21.Rh8 Nf8 22.Be5 Qd7 23.Qf2 f6 24.Bc3 b5 (better is 24...c5!?+=) 25.Ne3= Rd6 26.Kc1 (26.Rh5 0-0-0+=) 26...0-0-0= 27.Rh5 Kb7 (27...Ng6!?=) 28.Nf5+= Rd5 29.Qe2 1–0. Waibel,Ulrich (1830) – Sisow,Georg (1815), BdF OS–017 remoteschach.de, 2004.

6.Qe2 Bb4? 7.Qb5 Nbd7 8.Qb4 +-.

6.Qe2 c6 7.Rg1 Na6 (7...Nbd7 8.a3=) 8.a3 Nc7 9.c4 (9.Qe3 h6=) 9...a5 (9...dc4 10.Qc4 a5 11.ba5 Ra5 12.Nc3=) 10.cd5 cd5 11.ed5 (11.ba5 Ra5 12.Qe3 Rc5=) 11...Ncd5 (11...Nfd5 12.ba5 (12.Bg7?? Bg7 13.Ra2 ab4–+) 12...Ra5 13.Nc3=+ (13.Bg7 Bg7 14.Ra2 Bd4–+)) 12.Qb5 Qd7 13.ba5 Qb5 14.Bb5 Ke7 (14...Kd8 15.Nc3=+) 15.Nc3= Ra5 16.a4 Nb4 (16...Kd8 17.Ne4 Ne8 18.Bc3=) 17.Ba3 Kd8 18.Bb4 Bb4 19.Rg7 Ke7 20.Rb1 Rd8?? (better is 20...Bd6=). aspasio – AxlRose, ICC, 1999.

7.a3 a5 8.b5 (8.ba5 d4 9.a6 Na6 10.Rg1 Nf4 11.Rg4 g5 12.c3–/+) (A) 8...Nf4 9.d4 (9.Nc3 Nd7 10.d4 f6 11.Qd2 fe5 12.de5–/+) 9...f6 10.Qd2 g5 11.h4 fe5 12.de5=+; (B) 8...Be7 9.Rg1 Nd7 10.d4 c5 11.bc6 bc6 12.Bc1=; (C) 8...Nd7 9.d4 f6 10.c4 Nf4 11.cd5 ed5 12.Qc1=+.

7.a3 Nd7 8.d4 (A) 8...Qh4 9.Nd2 Nf4 10.c4 c6 11.cd5 Nd5 12.Rc1=+; (B) 8...Qe7 9.c4 (9.Nd2 f6 10.c4 Nf4 11.Rc1 c6 12.Qb3=+) 9...dc4 10.Bc4 0-0-0 11.Nd2 Nb6 12.Rc1=+; (C) 8...Nf4 9.Bc1 Qh4 10.Qd2 g5 11.Nc3 f6 12.ef6–/+.

7.a3 Nf4 8.d4 (A) 8...f6 9.c4 (9.Nc3 Be7 10.Ne2 fe5 11.de5 0-0 12.Nf4=+) 9...fe5 10.de5 Be7 11.cd5 ed5 12.Nc3=+; (B) 8...Nd7 9.Bc1 Qh4 10.Qd2 g5 11.Nc3 f6 12.ef6–/+.

7.a3 Nf4 8.Bd4 =+.

7.a3 Qg5 8.h4 (8.d4 (A) 8...Nd7 9.h4 (9.Bc1 Qh4 10.Be3 0-0-0 11.c4 dc4 12.Qa4=+) 9...Qe7 10.Qd2 0-0-0 11.Be2 g6 12.f4=+; (B) 8...Nf4 9.Bc1 f6 10.h4 Qf5 11.Rg1 Nd7 12.ef6–/+) 8...Qg6 (8...Qd8 9.Qe2 (9.c4 dc4 10.Qc2 a5 11.b5 Nd7 12.Qc4=+) 9...Nc6 10.Qe3 a6 11.d4 Be7 12.f4=+) 9.c4 (9.d4 Be7 10.Bc1 Nd7 11.Nc3 a5 12.f4=) 9...dc4 10.Nc3 (10.Bc4 Qg2 11.Rf1 Qh2 12.d4–/+) 10...Nc6 11.Qa4 (11.Ne4 0-0-0 12.Bc4–+) 11...0-0-0 (11...Qf5 12.Nd1–+) 12.Ne4? (better is 12.Nd1–/+) 12...Qf5–+ 13.Be2 Ne5 14.Be5 Qe5 15.Rc1 Kb8 16.Ng5 (16.Kd1–+) 16…Nf4 (17.Qd1 Nd3 (17...Ne2?! 18.Qe2 Qb2 19.Rc4–+; 17...Qe2?! 18.Qe2 Ne2 19.Ke2–+) 18.Kf1 Nc1 19.Qc1 Rd7–+) 0–1. Grehl,Siegfried – Buss,Michael, corr 3GMM–06, 1995.

7.b5 d4 8.c4 (8.Qe2 Bc5=) 8...c5 (better is 8...Qh4–/+) 9.d3? (better is 9.f4 Nf4 10.Qf3–/+) 9...Nf4 10.Qd2 (10.Bc1 Qg5–+) 10...Qg5 11.Rg1 (11.Bc1 Qe5 12.Be2 Bd6–+) 11...Qg1 (11...Nd3!? 12.Qd3 Qg1 13.f4 Qh2 14.Qf3–+) 12.Qf4 Nd7 13.Nd2 Be7 14.Ne4 0-0 15.0-0-0 g5 16.Qd2 Ne5 17.f4 Nf3 18.Qe2 g4 19.h3 h5 20.hg4 hg4 21.Bh3? Qh2 22.Bg4 Qf4 23.Nd2 Nd2 24.Rd2 Bg5 25.Kc2 Qd2 (26.Qd2 Bd2 27.Kd2 Kg7–+) 0–1. Schwab – Merkl, corr SOK–87–11, 1987.

7.b5 Nf4 8.d4 =+.

6.a3 Qd6 7.Rg2 Nbd7 =+.

6.a3 Qd6 7.h3 a5 8.b5 Nbd7 9.e3 c5 (9...Rg8 10.f4=) 10.d3 (10.f4 Rd8=) 10...g6 11.c4 (11.Nd2 Bg7=) 11...Bg7 12.f4 Nh5 (12...Rg8 13.Nd2=) 13.Qd2 (13.Nc3 Rd8=) 13...d4 (13...Bb2 14.Qb2 d4 15.Nd2=) 14.Be2 0-0-0 (14...de3 15.fe3 Bb2 16.Qb2=) 15.Bh5 de3 16.fe3 Bb2 17.Qb2 gh5 18.Qc3 e5 19.f5 Rhg8 20.Rg8 Rg8 21.Nd2 Qh6 22.Nf1 (22.e4 Qe3 23.Kd1 Qh3–/+) 22...Qg5 (22...Qf6 23.e4 Qh4 24.Kd1 Qh3 25.Kc2=+) 23.0-0-0 (23.Ra2 Qh4 24.Rf2 Rg2–+) 23...b6 24.Qd2 (24.h4 Qf5 25.Qe1 Qf6–/+) 24...Qf5 25.e4 Qh3 26.Ne3 Rg3 27.Re1 Nf8 (27...Kb8 28.Re2–+) 28.Kb2 (better is 28.Re2!?–/+) 28...Ne6–+ 29.Re2 Nf4 30.Rh2 Qe6 31.Kc2 Qd6 32.Nf5 Qd3 33.Qd3 Rd3 (33...Nd3?? 34.Ng3 Ne1 35.Kc3+-) 34.Rh5 Nh5 (34...Ra3?! 35.Rh7 Ng2 36.Kd2–/+) 35.Kd3 0–1. Boehnke,Hartmut – Hinz,Juergen, BdF, 2004.

6.a3 Qd6 7.h3 Nbd7N 8.e3 Qh2 9.Rg2 Qh3 10.Nc3 (10.Rg7 Qh1 11.Rg3 0-0-0=) 10...0-0-0 (10...Qh1!?–/+) 11.Rg7=+ Qh1 (11...Qh5!? 12.Rg3 h6=) 12.Rf7+= Qh5 13.Rf6 Nf6 14.Nd5 Rd5 (< 14...ed5 15.Bf6 Rg8 16.Bd8 Kd8 17.d4+/–) 15.Bf6 Rg8 16.c4 Rf5 17.Bd4 Rf3 18.Qa4?? (better is 18.Ba7 Qf5 19.Qe2=+) 18...Rf2!!–+ 19.Kf2 (19.Kf2 Bd6) 19...Be7 20.Bg2 Bh4 21.Kf1 Rf8 22.Kg1 Bf2 23.Kf1 Bg3 (24.Bf6 Rf6 25.Bf3 Qf3 26.Kg1 Qf2 27.Kh1 Qh2#) 0–1. ncc_1701 – michaelbuss, ChessWorld.net, 2005.

6.a3 Nbd7 7.e3 g6 (7...a5 8.c4=) 8.c4 c6 9.Nc3 (9.f4 Bg7=) 9...Bg7 10.cd5 (10.f4 0-0=) 10...ed5 11.d4 0-0 12.Rc1 (12.Bd3 Nb6=) 12...Re8 (12...Nb6 13.Qb3=+) 13.b5 (13.Be2 Nb6=) 13...Nh5 (13...Qc7 14.Rg2=+) 14.h3 (14.Be2 Qh4–/+) 14...Qh4 (14...Rb8 15.Na4=+) 15.Rg4 Qe7 16.Be2 f5 (16...Nhf6 17.Rg3=+) 17.Rg2 Qh4 18.Kf1 Qh3 (18...f4 19.e4 Nb6 20.e5=) 19.f4 Qh1 (19...Ndf6 20.Kg1 Ng4 21.Bg4 fg4 22.Qg4 (worse 22.Rg4 Bd4 23.Rg6 hg6 24.Qd4 Kh7–/+) 22...Qg4 23.Rg4=) 20.Rg1 Qh3 21.Rg2 Ndf6 22.Kg1 Ng4 23.Bg4 fg4 24.Qg4 (24.Rg4 Rab8=) 24...Qg4 25.Rg4 Nf6 26.Rg5 Nd7 (26...Rac8 27.bc6 bc6 28.Re5=) 27.Ne2 (27.f5 Bf6 28.Rg2 Kf7=) 27...Rac8 (worse 27...cb5 28.Rd5 Nb6 29.Rb5+-; 27...Bf6 28.bc6 bc6 29.Rg3= (worse 29.Rc6 Bg5 30.fg5 Rec8–/+)) 28.bc6 bc6 29.f5 Kf7 30.fg6 ½–½. Lins,Thomas (2170) – Christ,Ralf (2165), GER–ch33 V5 email, 2002.

6.a3 Rg8 7.e3 =+.

5.a3 Nbd7 =+.

5.e3 c6 6.a3 (6.Nc3 Qd6 7.b5 g6+=) 6...Nbd7 (6...Qd6 7.c4=) 7.f4 (7.c4 e6=) 7...Qc7= 8.d4 (8.Nc3 d4 9.Na4 de3 10.de3 g6=) 8...Nb6 (8...e6 9.Nd2=) 9.Nd2 (9.Nc3 g6=) 9...Na4=+ 10.Rb1 b5 (10...Nb2 11.Rb2 e6 12.Rg1=+) 11.Nb3 (11.Bd3 a5=+) 11...Ne4 12.Qd3 Nb2 (12...e6 13.Bg2 Nb2 14.Rb2=+) 13.Rb2 e6 14.Na5 (14.Rg1 g6=) 14...Nd6 (14...f5 15.f3 Nd6 16.Qc3=) 15.Qd1 (15.Qc3 Rc8=) 15...Be7=+ 16.Qg4 (16.Bd3 0-0=+) 16...Bf6 (16...0-0 17.Bd3=+) 17.Nb3 (17.c3 0-0=+) 17...Nc4 (17...a5 18.Rg1–/+) 18.Bc4=+ dc4 19.Nc5 h5 (19...a5 20.Ke2=+) 20.Qf3 (20.Qg2 a5=) 20...a5 21.c3 (21.a4 ab4 22.Rb4 Ra5=) 21...ab4=+ 22.ab4 Ra3 (22...0-0 23.0-0=+) 23.Kd2 (23.Ne4 Be7=) 23...g6 24.Kc2 (24.Rg1 Bg7=) 24...0-0=+ 25.Rg1 Kh7 (25...Kh8 26.Kd2=+) 26.Qe4 (26.Qg3 Rg8=+) 26...Be7?? (better 26...Kh8=+; better 26...Kh8=+) 27.Ne6+- (27.Ne6 Qd6 28.Nf8 Bf8 29.f5+-; 27.Ne6 Qd7 28.Nf8 Bf8 29.f5 Qf5 30.Qf5 gf5 31.Rg5+-) 1–0. Lehmann,Frank – Lorenz,N (1875), ZDMI Open, Dresden GER, 2010.

5.e3 e6 6.a3 a5 7.b5 Nbd7 8.c4 Bd6 9.d4 c6 (9...dc4 10.Bc4 Rc8 11.Bd3=) 10.Nd2 0-0 11.f4 c5 12.Qf3 Rc8 13.cd5 ed5 14.Bh3 (14.dc5 Nc5 15.Rg1 Re8=) 14...c4=+ 15.Bc3 Qe7 16.0-0 b6 17.Kh1 Rc7 18.a4 Re8 19.Bf5 Nf8 20.Rg1 Ng6 21.Qh3 Bb4 22.Rgc1 Bc3 23.Rc3 Qb4 24.Raa3 (24.Rc2 Ne7-/+) 24...Qb2-+ 25.Bc2 Ne4?? (better 25...Nf4 26.Qf1 Nd3-+) 26.Ne4= de4 27.Qf1 (27.f5 Ne7 28.Be4 Qf2+/-) 27...Qb4 (27...Nh4 28.Qd1=+) 28.Qb1 (28.f3!? ef3 29.Qf3=) 28...f5=+ 29.Bd1?? (29.Qa2 Kf8-/+) 29...Ne7 (29...Qb1 30.h4 Qd1 31.Kg2 Nh4 32.Kh2 Qf3 33.Rc4 Qg2) 30.Qc1 Nd5 31.Rc2 c3 (31...Qe1 32.Kg2-/+) 32.Rca2-+ Kh8?? (better 32...c2 33.Bc2 Rec8-+) 33.Bb3= Nf6 34.Rc2 Qd6 (34...g6 35.Ba2=) 35.Ba2+= Ng4 36.h3 (36.Rac3?! Rc3 37.Rc3 Nf2 38.Kg1 Nd3=) 36...Qh6 37.Kg2 Qh5 (37...Qg6!? 38.hg4 Qg4 39.Kf1 Qh3 40.Kg1 Qg4 41.Kh2 Qh4 42.Kg1 Qg4 43.Kh1 Qh5 44.Kg1 Qg4=) 38.Qf1 Rec8? (better 38...Nf6+=) 39.Be6?? (better 39.Qe2+-) 39...Rf8 (39...Ne3 40.fe3 Qg6 41.Kf2 Qe6=+) 40.Rac3 (40.Bc4!? Nf6 41.Rac3+=) 40...Rc3 41.Rc3 Nh6?? (41...Ne3!? 42.fe3 Qg6 43.Kh2 Qe6=) 42.Rc8 (better 42.Rc6!?+-) 42...Rc8+/- 43.Bc8 g5 (43...Qf3 44.Kh2 Qh5 45.Qc1 Ng4 46.Kg2+/-) 44.d5 (44.fg5 Qg5 45.Kh1 f4+/-) 44...gf4 45.Qa1 Kg8 46.Be6 Nf7 47.ef4 (47.Qc1 f3 48.Kh2 Qg6=) 47...Qf3= 48.Kg1 e3 49.fe3 Qg3 50.Kf1 Qf3 51.Kg1 Qg3 52.Kf1 ½-½. Teichmann,Erik (2240) - Gertosio,F (2265), Lyon Rapid Prelim (5), 2019.

5.e3 e6 6.a3 Nbd7 7.c4 c6 8.f4 Bd6 9.c5 Bc7 10.d4 (10.Bf6 gf6 11.Be2 a5=) 10...Qe7 (10...Nf8 11.h3=) 11.Nd2 Ne4 12.Ne4 de4 13.Qc2 (13.Rg1 f6+=) 13...f5= 14.h4 (14.b5 Ba5 15.Bc3 Bd8+=) 14...Nf6 15.0-0-0 White is not afraid to castle (15.h5 a6=) 15...Nd5 (15...Ng4 16.Bh3 Nh6 17.Rhg1–/+) 16.Bc4 (16.Kd2 Rf8+=) 16...Qd7 (16...0-0 17.h5=) 17.Qe2 (17.Bd5 Qd5 18.Kb1 0-0+=) 17...b5 (17...Nf6 18.b5+=) 18.cb6 ab6 19.Kb1 (19.Qh5 Kf8+=) 19...b5 (19...0-0 20.h5+=) 20.Bb3 (20.Bd5 cd5 21.Qh5 g6=) 20...Kd8 (20...Nf6 21.f3+=) 21.Rc1 Kc8 (21...Ra7 22.Ba2=) 22.Rc5 Kb7 23.Rhc1 Ra6? (better is 23...Bd6!? has some apparent merit 24.R5c2 Rhc8+=) 24.a4!+/– White pulls ahead 24...Rb6?? further deteriorates the position (24...ba4 25.Bd5 cd5 (25...ed5 26.b5 Combination) 26.Rc7 Remove defender Pinning (26.Qb5 Deflection)) 25.ab5+- Rb5 (25...cb5 a fruitless try to alter the course of the game 26.Bd5 ed5 27.Rc7 Qc7 28.Rc7 Kc7+-) 26.Bd5 ed5= 27.Rb5 cb5 28.Rc5 Bb6 29.Rb5? Rc8–+ 30.Rc5 Bc5 31.dc5 Qa4 32.Qh5 Kc6–+ 33.Qf5 Qd1 34.Bc1 Qd3 35.Kb2 Ra8 36.Qf7?? Qe2 37.Kc3 Qc4 38.Kd2 Ra2 39.Kd1 Qe2 0–1. Chandler,Patrick (2260) – Uwira,Oliver (2170), Hessen–ch Bruchkoebel, 2002. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3)

5.e3 e6 6.b5 Bd6 7.c4 Nbd7 8.Nc3 0-0 9.Be2 c6 10.a4 Rc8 11.a5 dc4 12.Bc4 c5 (12...cb5 13.Bb5 a6 14.Be2=+) 13.a6 b6 14.d3 Ne5 15.f4 Ng6 16.Qb3 Ng4 (16...e5 17.fe5 Ne5 18.0-0-0=) 17.Ne4 (17.Be6 Qh4 18.Bg4 Qg4 19.h3+/–) 17...Qh4? (17...Be7 18.Rg1 Nf6 19.Qc3=) 18.Ke2 (better is 18.Qc3!? e5 19.f5+/–) 18...Be7= 19.f3 Nf6 (19...Nh2? 20.Raf1 Nf1 21.Rh4 Ne3 22.Rh2+-) 20.Ng5 Nd5 21.Bd5 ed5 22.Qd5 Qf4 23.Ne4 Qh4 24.Qc4 Kh8 25.Rag1 f5 26.Nf2 f4=+ 27.Rg4 Qh5 28.e4 Bf6 29.Bf6 Rf6 30.Qc3? Ne5–+ 31.h3 Re8 32.Rhg1 Ng4 33.hg4 Qe5 34.Qe5–/+ Re5 35.g5 Rf8 36.Rg4=+ Re7 37.Nh3 Ref7 38.d4 cd4–/+ 39.Kd3 Rc8 40.Rf4 Rd7 41.Rf5 Rc3–+ 42.Kd2 Kg8 43.Nf4 Rf3 44.Ne6? Rf5 45.ef5 Rd5 0–1. Melich,Jindrich (2130) – Bindrich,Falko (2180), CZE–chT2, 2003.

5.e3 e6=+ 6.b5 Nbd7 7.f4 g6 (7...Bc5 8.Rg1 Rg8 9.c4=+) 8.c4 dc4 9.Bc4 Bg7 (9...Rc8 10.Nc3=+) 10.Nc3 (10.Qf3 Rb8=) 10...0-0 (10...Nb6 11.Be2=) 11.d4 Nb6 12.Be2 Qd7 (12...Rc8 13.Ba3 Re8 14.Rc1=) 13.Qb3 (13.Rg1 Rfd8=) 13...Rfd8 14.Rc1 Bf8 (14...Nbd5 15.Rg1=) 15.0-0 (15.h4 h5=) 15...Nbd5 16.Rfd1 c6 17.bc6 bc6 18.Ba3 (18.Qc2 Nb4 19.Qa4 Rab8=) 18...Rab8 19.Qa4 Rb6 20.Bf8 Rf8 21.Bf3 (21.Nd5 ed5 22.Rd2 Re8=) 21...Qb7 22.Rd2 Rb8 23.Rdc2 Nb4 24.Rd2 Qc7 25.Qa5 Qe7 26.Qg5 Nfd5 27.Nd5 Qg5 28.fg5+= cd5 29.Be2 Rc6 30.Rc6 Nc6 31.Rc2 Nb4 32.Rb2 Rb6 33.a3 Nc6 34.Rb6 ab6 35.Kf1 Ne7 36.Ke1 h6 37.h4 Kg7 38.Bd3= f6 39.f4 Nc8 40.Kd2 Nd6 41.Kc3 hg5 42.hg5 fg5 43.fg5 Nf7 44.Kb4 Nd6 45.Ka4 Kf7 46.Kb4 Kg7 47.Ka4 Kf7 48.Kb4 Kg7= ½–½. Vokac,Marek (2485) – Pinter,Jozsef (2575), BL2–S, 1997.

5.e3 g6 6.a3 Bg7 (6...a5 7.b5 Bg7 8.c4 c6 9.Nc3 d4 10.Na4 cb5 11.cb5 Nd5=) A) 7.d4 a5 (7...Nbd7 8.c4 Nb6 9.Nd2 Qd7 10.Rc1 0-0 11.c5 Nc8=; 7...0-0 8.c4 a5 9.b5 Nbd7 10.Nc3 e6 11.Rg1 c5=) 8.c4 ab4 9.ab4 Ra1 10.Ba1 0-0 11.Nc3 e6=; B) 7.c4 c6 (7...e6 8.d4 Nbd7 9.Nd2 Qe7 10.Rc1 c6 11.b5 0-0=; 7...0-0 8.d4 a5 9.b5 Nbd7 10.Nc3 dc4 11.Bc4 e5=) 8.d4 0-0 9.Nc3 Nbd7 10.Rg1 e5 11.de5 Ne5=.

5.e3 g6 6.c4= dc4 7.Bc4 Bg7 (7...Nbd7 8.Qb3 e6 9.d3 a6 10.a4 Qe7 11.b5 ab5=; 7...e6 8.Qb3 Nbd7 9.d3 a6 10.a4 Bd6 11.Nd2 Qe7=) 8.0-0 (8.d4 Nbd7= 9.Nc3 Nb6 10.Bd3 0-0 11.Ne4 c6=) 8...0-0 (8...Nbd7 9.Qb3 e6 10.d3 (10.Rc1=+ Nb6 11.Be5 0-0=+) 10...Nb6 11.Rd1 a5=) 9.d4 Nbd7 (9...Nd5 10.Nc3 e6 11.Qb3 Nc3=) 10.Nd2 (10.Nc3 Nb6 11.Bd3 Nfd5=) 10...Ne8 (10...Nb6 11.Bd3= Nfd5=+) 11.f4 (11.Ne4 Nd6=) 11...Nd6 (11...Nb6=) 12.Be2 c6 ½–½. Franic,Milan (2410) – Rowson,Jonathan (2525), Open, Pula CRO, 2002. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.gf3 Nf6)

5.e3 g6 6.c4 c6 7.Qb3 (7.cd5 cd5 8.Qa4 Qd7+=) 7...Bg7 8.cd5 (8.Nc3 0-0+=) 8...cd5= 9.d4 (9.Na3 0-0=) 9...0-0 10.Nc3 Nc6 11.f4 e6 12.Bd3 (12.Rc1 Qb6=) 12...Qb6 13.a3 Na5 14.Qa2 Nc4 15.Bc4 dc4 16.Qc4 Rfc8 17.Qd3 Qc6 18.Ke2 Nd5 19.Ne4?? (better is 19.Rac1+=) 19...Qc2–+ 20.Qc2 Rc2 21.Kf3 Rb2 22.Rhc1 (22.Rhb1 Rb1 23.Rb1 Rc8–+) 22...Bf8 23.Rc4 (23.Nc5 b6 24.Nd7 Kg7–+) 23...a5 24.ba5 Rb5 (24...Ra5 25.Nc5–+) 25.a4 Rba5 (25...Rb2!? 26.a6 Ra6 27.Rcc1–+) 26.Rb1 Ra4 27.Ra4 Ra4 28.Rb7 Rb4 29.Ra7 Be7 30.Nd2 Kf8 31.Ra8 Kg7 32.Ra7 Bf8 33.Ne4 h6 34.Kg3 Nf6 35.Nd2 Rb2 36.Nc4 Ne4 37.Kf3 Nd2 38.Nd2 Rd2 39.Rb7 h5 40.Kg3 Rc2 41.Kf3 Rc8 42.Kg3 Rd8 43.Kf3 Bd6 44.h3 Kf8 45.Ra7 Ke8 46.Ra6 Ke7 47.Ra7 Rd7 48.Ra8 Rb7 49.Ra5 Bb4 50.Ra6 Kd7 51.Ra8 Be7 52.Kg3 Bf6 53.Ra5 Ke7 54.Rc5 Rb3 55.Rc7 Kf8 56.Rc8 Kg7 57.Rc4 Rd3 58.Ra4 Rc3 59.Rb4 Be7 60.Rb5 Bd6 61.Rb6 Bc7 62.Rb5 Kf8 63.Rb2 (63.Kf3 Rc2–+) 63...g5 64.Rb5 (64.Kf3 gf4 65.Ke2 Ke7–+) 64...gf4 65.Kf3 fe3 66.fe3 h4 67.Rh5 (67.d5 f5 68.de6 f4–+) 67...Bg3 68.d5 e5 69.Rh8 (69.Ke4 Bf2 70.Ke5 Re3 71.Kf6 Rf3 72.Rf5 Rf5 73.Kf5 Ke7–+) 69...Kg7 70.Ra8 (70.Rd8 Bf4 71.Rb8 Re3 72.Kg4 Rg3 73.Kf5 Rg5 74.Ke4 f5 75.Kf3 Rg3 76.Kf2 e4–+) 70...f5 71.Ke2 e4 0–1. Letzelter,Jean Claude – Weill,Roland, Nimes FRA, Veteran Ch, 2014.

5.e3 g6 6.c4= e6 A) 7.a3 Nbd7 (7...dc4 8.Bc4 Nbd7 9.Nc3 a5 10.b5 Nb6 11.Be2 Bg7=; 7...c6 8.Nc3 dc4 9.Bc4 b5 10.Be2 a5 11.Ne4 Bg7+=) 8.cd5 ed5 9.Nc3 c6 10.b5 Bd6 11.Rb1 Qa5=; B) 7.cd5 ed5 8.Nc3 Bg7 9.Qb3 0-0 10.d4 Re8 11.Be2 Bf8=.

5.e3 g6 6.Bf6 ef6 7.a3 Nd7 (7...Bd6 8.d4 c6 9.Nd2 a5 10.b5 Qe7 11.bc6 bc6=; 7...c6 8.d4 Bd6 9.Nd2 a5 10.b5 Qe7 11.c4 Ba3=) 8.d4 a5 9.b5 Bd6 10.c4 dc4 11.Bc4 Nb6=.

5.Bh3 e6 6.a3 Nbd7 7.Rg1 c5 8.c3 c4 9.Qc2 g6 10.e4 (10.Bf1 Qc7–/+) 10...Bg7 (10...Ne5!? 11.Bg2–+) 11.d4 cd3! 12.Qd3 Qc7 13.Rh1 Nb6 14.Nd2 Nh5 15.Qb5 Kf8 16.Qc5? (better is 16.Rc1!?–/+) 16...Qc5–+ 17.bc5 Nd7 18.Nb3 Nf4 19.Bf1 Rc8 20.Rc1 Nc5 21.Nc5 Rc5 22.Kd2 Ke7 23.a4 Rc7 (better is 23...Rcc8!? 24.Ba3 Kf6–+) 24.Ba3+= Kd7 25.Bb5 Kc8 ½–½. Kozlov,Vladimir Alex – Makarov,Aleksandr, Northwest–ch Seniors, 2009.

5.h4 Nbd7 6.Nc3 e5 7.Bh3 (7.a3!?=+) 7...Bb4-+ 8.a3 Ba5 9.Rb1 Qe7 10.Na2 c5 11.Rg1 0-0 12.Kf1 (better 12.c4-/+) 12...e4?? (better 12...Nb6!?-+) 13.fe4?? (better 13.Bd7!? ef3 14.Bf5+/-) 13...d4 (13...Ne5!? 14.d3 de4=+) 14.d3=+ Ne5 15.f4? (15.c3!?=+) 15...Ng6 (15...Ne4 16.de4 Qh4 17.fe5 Qh3 18.Rg2-/+) 16.Bc1 Nh4 17.f5 Nh5?? (better 17...Qc7 18.e3 Qh2-/+) 18.Bg5 (better 18.e3!? Nf6 19.ed4 cd4 20.Bg5+/-) 18...Qe5=+ 19.Bh4 (better 19.Bg4!? Ng3 20.Kf2=+) 19...Qh2-/+ 20.Be7 (better 20.Bg4 Qh4 21.Bh5 Qh5 22.Rb7-/+) 20...Qh3-+ 21.Kf2 Rfe8 (21...Qe3 22.Kf1 Bd2 23.Rg2-+) 22.Bc5 (22.Bg5 h6 23.Bd2 Bd2 24.Qd2 Qh2 25.Rg2 Qh4 26.Kg1 Nf4-/+) 22...Qh4 23.Kf1 Ng3 (23...Qf4 24.Kg2 Re4 25.de4 Qe4 26.Kh3 Qf5 27.Kg2 Nf4 28.Kg3-+) 24.Rg3 Qg3 25.Bd4 Qh3 26.Kf2 Qh2 27.Kf1 Rad8 28.Bf2?? (better 28.c3-+) 28...Re4!! 29.Rb7 (29.de4 A pinning theme 29...Rd1 A double attack) 29...Rf4 30.Qe1 (30.Ra7 Rf2) 30…Qh1 0-1. zembelek (2065) - jlindner (2135), Rated Blitz game, lichess.org, 2014.

5.h4 g6 6.h5 Bg7 7.hg6 hg6 8.Rh8 Bh8 9.Bh3 Nbd7 10.d3 Bg7 11.Nd2 c5 12.a3 a5 13.b5 (13.c4!?+=) 13...Kf8 14.e4? (14.c4 e6=) 14...d4 (better 14...Nh5!? 15.Bg7 Kg7 16.ed5 Nf4 17.Bd7 Ng2 18.Kf1 Qd7-+) 15.Nc4 Qc7 16.Bd7 Nd7 (16...Qd7 17.Nb6 Qb5 18.Na8 Qb2 19.Qc1 Qc3 20.Ke2+-) 17.a4 Ne5 18.Ne5 Qe5 19.Ke2 Qf4 20.Qh1 Kg8 21.Rg1 Bh6?? (better 21...c4 22.Bc1 Qc7=+) 22.Bc1+- Qc1 (22...Qf6 23.Qh6 Re8+-) 23.Rc1 Bc1 24.Qc1 b6 (24...Re8 25.Qg5 e5 26.f4+-) 25.Qg5 1-0. shahramagai (2025) - LionAndy (2055), Rated Classical tournament, lichess.org. (=1.Nf3 A00: Irregular Openings 1...d5 2.b4 Bg4 3.Bb2 Bf3)

6.c4 dc4 7.Bc4 Nb6 (7...e6 8.Qb3=+) 8.Be2 a5 (8...e6 9.a3=+) 9.b5= e6 10.Nc3 (10.Rg1 a4=) 10...Qd7 (10...Be7 11.Qc2=) 11.Qc2 (11.Rg1 Rd8=) 11...Be7 (11...Rd8 12.Rg1=) 12.Ne4 0-0-0 (12...Nbd5 13.Rg1 0-0 14.Bc4=) 13.a3 (13.Nf6 Bf6 14.Bf6 gf6+=) 13...Ne8 (13...Kb8 14.Rc1+=) 14.d4 (14.Bc3 Nd5+=) 14...f5 (14...Kb8 15.Bc3+-) 15.Nc5+- Qd6 (15...Qd5 16.e4 Qd6 17.Rd1+-) 16.Rc1 (better 16.Qc3+-) 16...Nf6?? (better 16...Nd5+-; better 16...Nd5+-) 17.Ne6+- Rd7 18.Nc5 1–0. Lombardy,William J (2500) – Solmundarson,Magnus (2270), Borgarnes, 1985. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.gf3 Nf6)

6.Rg1 c6 A) 7.f4 A1) 7...e6 8.a3 (8.b5 cb5 9.Bb5 a6 10.Bd7 Nd7 11.Bd4 Rc8 12.Nc3; 8.Nc3 Rg8 9.a3 Bd6 10.Be2 Qc7 11.b5 c5 12.a4; 8.c4 dc4 9.Bc4 Rg8 10.a3 Bd6 11.d4 Nb6 12.Bd3; 8.Be2 Rg8 9.a3 Bd6 10.Nc3 b5 11.a4 a6 12.Na2; 8.Bd4 Rg8 9.a3 a6 10.f3 a5 11.b5 Bd6 12.Be2) 8...Rg8 9.Nc3 Bd6 10.Be2 Qc7 11.b5 c5 12.a4; A2) 7...g6 8.c4 (8.a4 e6 9.b5 Bg7 10.a5 a6 11.bc6 bc6 12.Be5; 8.d4 e6 9.a3 b5 10.Bd3 a5 11.Qd2 Nb6 12.f3) 8...dc4 9.Bc4 Nb6 10.Be2 Bg7 11.d4 Qd7 12.Nc3; A3) 7...Rg8 8.a3 (8.Be2 g6 9.a3 Bg7 10.c4 a5 11.cd5 Nd5 12.Bg7; 8.c4 e6 9.a3 Bd6 10.d4 dc4 11.Bc4 Nb6 12.Bd3; 8.Bd3 g6 9.Bd4 e6 10.a3 a5 11.b5 Bg7 12.bc6; 8.b5 e6 9.Nc3 cb5 10.Bb5 a6 11.Bf1 b5 12.a4; 8.Nc3 g6 9.a4 Bg7 10.a5 Qc7 11.h3 a6 12.d4; 8.Qf3 e6 9.a3 b5 10.f5 e5 11.Be2 Bd6 12.Bc3; 8.Bd4 e6 9.a3 Be7 10.Be2 a6 11.Be5 a5 12.b5; 8.f3 e6 9.a3 Bd6 10.Nc3 Qc7 11.b5 a6 12.ba6; 8.Qe2 e6 9.a3 b5 10.Qd3 a5 11.Qc3 Ra6 12.f3) 8...e6 9.Nc3 g6 10.Be2 a5 11.b5 Bh6 12.f5; B) 7.a3 B1) 7...Rg8 8.f4 (8.c4 e6 9.cd5 cd5 10.f4 a5 11.Bb5 g6 12.Qa4; 8.Nc3 e5 9.d4 Bd6 10.de5 Ne5 11.f4 Ng6 12.Bd3; 8.d4 Nb6 9.Bd3 e6 10.f4 Bd6 11.Nd2 Na4 12.Qb1) 8...g6 9.c4 e6 10.d4 dc4 11.Bc4 Nd5 12.Nd2; B2) 7...g6 8.c4 Bg7 9.cd5 cd5 10.Nc3 0-0 11.Rc1 Rc8 12.d4; B3) 7...Qc7 8.f4 e6 9.c4 dc4 10.Bc4 Qd6 11.d4 Nb6 12.Bd3; B4) 7...e6 8.f4 (8.Be2 Rg8 9.f4 Bd6 10.Nc3 b5 11.a4 a6 12.Na2; 8.Nc3 Qc7 9.f4 0-0-0 10.Nb1 g6 11.c4 Bg7 12.cd5; 8.c4 dc4 9.Bc4 Nb6 10.Be2 Rg8 11.Qc2 Bd6 12.f4; 8.h3 Rg8 9.f4 b5 10.a4 ba4 11.c3 Nb6 12.Ba6; 8.Qe2 Rg8 9.e4 Nb6 10.Qe3 a5 11.b5 c5 12.e5; 8.Rg2 Rg8 9.f4 Be7 10.Be2 b5 11.Bd4 a6 12.Bc3) 8...Rg8 9.Nc3 Bd6 10.Be2 Qc7 11.b5 c5 12.Bf3.

6.Rg1 e5 7.b5 (7.c4 A) 7...Rg8 8.a3 (8.Qb3 c6 9.cd5 Nd5 10.Bc4 N7b6 11.Be5 Nc4 12.Qc4; 8.cd5 Bb4 9.Qb3 Bd6 10.d4 ed4 11.Bd4 Be5 12.Qb7) 8...dc4 9.Bc4 Bd6 10.Nc3 Nb6 11.Bb3 a5 12.ba5; B) 7...c6 8.a3 (8.cd5 Nd5 9.b5 Qh4 10.h3 f6 11.bc6 bc6 12.Qc2) 8...Rg8 9.cd5 cd5 10.Nc3 a5 11.Qb3 ab4 12.ab4; C) 7...Qe7=+ 8.a3 0-0-0 9.cd5 Nd5 10.Qb3 Qd6 11.d3 N7b6 12.Nd2; 7.a3 A) 7...a5 8.d4 (8.ba5 c6 9.Bc3 Qe7 10.d4 ed4 11.Qd4 Rg8 12.Qh4; 8.b5 Rg8 9.d4 Bd6 10.c4 dc4 11.h3 ed4 12.Bd4) 8...ed4 9.Qd4 ab4 10.ab4 Ra1 11.Ba1 c6 12.Nd2; B) 7...Rg8 8.c4 dc4 9.Bc4 Bd6 10.Qb3 Qe7 11.Nc3 Nb6 12.Nb5; C) 7...Qe7 8.c4 0-0-0 9.cd5 Nd5 10.Qb3 N5b6 11.Nc3 Kb8 12.Ne4) 7...c6 (7...Qe7 8.c4=+ (8.Ba3 Qe6 9.c4 Ba3 10.Na3 0-0 11.cd5 Qd5 12.Qc2) 8...0-0-0 9.cd5 Nd5 10.Nc3 Nc3 11.Bc3 Kb8 12.Qc2; 7...Rg8 8.c4 (8.d4 ed4 9.Bd4 Bd6 10.Rg2 Qe7 11.Nc3 Be5 12.f4) 8...Bd6 9.cd5 Nd5 10.Nc3 Nc3 11.Bc3 Qh4 12.h3) 8.d4 (8.c4 Qa5 9.bc6 bc6 10.Bc3 Qc7 11.h3 Rd8 12.cd5) 8...Qa5 9.Bc3 (9.Qd2 Bb4 (9...Qc7 10.de5 Ne5 11.Qd1 Ned7 12.h3) 10.c3 Bf8 11.bc6 (11.c4 Bb4 12.Bc3) 11...bc6= 12.c4; 9.Nd2 ed4 10.Bd4 c5 11.Bb2 c4 12.Bd4) 9...Bb4 10.Qd2 (10.Bb4 Qb4 11.c3 Qb2=+ 12.Nd2) 10...Bc3 11.Qc3 (11.Nc3 ed4 12.Qd4 0-0=+) 11...Qc3 12.Nc3 ed4 13.ed4 g6 (13...0-0 14.Bd3=+) 14.Kd2 Ke7 15.bc6 (15.Re1 Kd6=+) 15...bc6 16.Rb1 Rab8 17.Bd3 Kd6 18.Rb3 (18.f4 Rb1 19.Rb1 Re8=+) 18...Nh5 (18...a5 19.Rgb1=+) 19.Ne2 (19.Ra3 Rb7=+) 19...c5 20.Ba6 (20.Bb5 c4 21.Rbb1 Nhf6–/+) 20...Ng7–/+ 21.Rgb1 ½–½. Solis,Jose Alberto (2460) – Oberst,Anton (2255), RSS7E schnell–23, 2007. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 Bf3 4.gf3 Nf6)

6.Rg1 e6 A) 7.a3 A1) 7...a5 8.b5 (8.Nc3 ab4 9.ab4 Rg8 10.Ra8 Qa8 11.b5 Qa5 12.Be2) 8...Rg8 9.f4 Bd6 10.Be2 Qe7 11.Rg2 h6 12.c4; A2) 7...a6 8.c4 (8.Nc3 Rg8 9.f4 c5 10.bc5 Bc5 11.a4 Bd6 12.Rb1; 8.f4 a5 9.b5 Rg8 10.c4 Be7 11.Bg2 c6 12.Nc3; 8.Qe2 Rg8 9.e4 Nb6 10.Bd4 de4 11.Bb6 ef3 12.Qf3) 8...dc4 9.Bc4 Nb6 10.Be2 a5 11.b5 Rg8 12.d3; A3) 7...c6 8.f4 (8.Be2 Rg8 9.f4 Bd6 10.Nc3 b5 11.a4 a6 12.Na2; 8.Nc3 Qc7 9.f4 0-0-0 10.Ne2 g6 11.Nd4 Kb8 12.c4; 8.h3 Rg8 9.f4 Be7 10.Be2 b5 11.Bd4 a6 12.c3; 8.c4 Rg8 9.cd5 cd5 10.f4 Be7 11.Nc3 a5 12.ba5; 8.Qe2 Rg8 9.e4 Nh5 10.Qe3 a5 11.ba5 Qa5 12.Bc3; 8.Rg2 Rg8 9.f4 b5 10.a4 ba4 11.c3 Nb6 12.Ba6) 8...Rg8 9.Nc3 Bd6 10.b5 a6 11.bc6 bc6 12.Rb1; A4) 7...g6 8.c4 (8.h3 Bd6 9.f4 a5 10.b5 h6 11.Be2 Qe7 12.c4; 8.f4 a5 9.b5 Bg7 10.Nc3 Ne4 11.d4 Nd6 12.Nb1; 8.Be2 a5 9.b5 c5 10.Kf1 Bg7 11.Nc3 Nb6 12.Rb1; 8.Rg2 Bg7 9.d4 a5 10.b5 c5 11.bc6 bc6 12.c4; 8.Nc3 Bg7 9.Be2 Nb6 10.d4 Nfd7 11.h3 Qh4 12.Nb5; 8.Bg2 Bd6 9.f4 c5 10.c4 dc4 11.Bb7 Rb8 12.Bc6) 8...c6 9.Nc3 h6 10.d4 Bd6 11.f4 Be7 12.Bd3; A5) 7...Nb6 8.f4 (8.Bd4 g6 9.Nc3 Bg7 10.f4 Rg8 11.a4 a6 12.a5; 8.Bb5 c6 9.Be2 Rg8 10.f4 Be7 11.Bd4 Nbd7 12.Bb2; 8.Be2 a5 9.b5 Rg8 10.Bd4 Nbd7 11.f4 a4 12.c4; 8.Nc3 a5 9.ba5 Ra5 10.f4 Rg8 11.Bd3 Be7 12.Qe2; 8.Bd3 g6 9.Bd4 Bg7 10.f4 Nh5 11.Bg7 Ng7 12.Nc3; 8.h3 Rg8 9.Nc3 Be7 10.Be2 Qd7 11.e4 0-0-0 12.d4) 8...Rg8 9.Qf3 g6 10.c4 c6 11.c5 Na4 12.Be5; A6) 7...Qe7 8.f4 (8.c4 dc4 9.Bc4 Qd6 10.f4 c6 11.d4 Nb6 12.Bd3; 8.d4 a5 9.b5 Nb6 10.Bd3 Qd6 11.Rg3 h5 12.Qd2) 8...0-0-0 9.Bd4 Kb8 10.Nc3 g6 11.Nb5 a6 12.Nc3; A7) 7...h6 8.c4 (8.Qe2 a5 9.Qb5 Qb8 10.f4 c6 11.Qd3 ab4 12.ab4; 8.f4 a5 9.b5 Rg8 10.c4 Bd6 11.cd5 ed5 12.Nc3; 8.h3 a5 9.b5 Rg8 10.c4 dc4 11.Bc4 Bd6 12.d3; 8.Nc3 Rg8 9.h3 a5 10.b5 Bd6 11.f4 Qe7 12.Qf3) 8...a5 9.b5 Rg8 10.d4 dc4 11.Bc4 Nd5 12.Nd2; A8) 7...Rg8 8.Nc3 (8.f4 c5 9.bc5 Bc5 10.c4 d4 11.Qb3 Qb6 12.Qb6; 8.Be2 c5 9.bc5 Bc5 10.Nc3 e5 11.Na4 b6 12.Nc5) 8...c6 9.f4 Bd6 10.Be2 b5 11.a4 a6 12.Na2; B) 7.f4 B1) 7...Rg8 8.a3 c5 9.bc5 Bc5 10.c4 d4 11.Qb3 Qb6 12.Qb6; B2) 7...a6 8.Be2 (8.a3 Rg8 9.c4 c6 10.Nc3 dc4 11.Bc4 Nb6 12.Be2; 8.Nc3 Rg8 9.a3 c5 10.bc5 Bc5 11.a4 Qc7 12.Rb1; 8.c4 dc4 9.Bc4 Nb6 10.Be2 Nfd5 11.a3 Qh4 12.Rg2; 8.f3 g6 9.a3 Bg7 10.Qe2 h6 11.Be5 Ne5 12.fe5; 8.Qf3 Rg8 9.a3 c5 10.bc5 Bc5 11.Nc3 Qc7 12.Rg3) 8...Rg8 9.a3 c5 10.bc5 Bc5 11.Nc3 b5 12.a4; B3) 7...c6 8.b5 (8.Nc3 Qb6 9.b5 c5 10.Na4 Qd6 11.c4 a6 12.cd5; 8.a3 Rg8 9.Nc3 Qc7 10.b5 Be7 11.bc6 bc6 12.Be2; 8.Bd4 Rg8 9.a3 a6 10.Be2 c5 11.bc5 Bc5 12.Bb2; 8.c4 dc4 9.Bc4 Rg8 10.a3 Nb6 11.Be2 Nfd5 12.Nc3; 8.Be2 Rg8 9.a3 Bd6 10.Nc3 b5 11.a4 a6 12.Na2; 8.a4 g6 9.b5 Bg7 10.Nc3 Qa5 11.h3 0-0 12.Nb1) 8...Rg8 9.Nc3 cb5 10.Nb5 a6 11.Nd4 Nc5 12.a4; B4) 7...g6 8.a3 (8.b5 Bg7 9.c4 c6 10.bc6 bc6 11.Bg2 Rc8 12.d3) 8...Bg7 9.c4 c6 10.d4 dc4 11.Bc4 Nb6 12.Bd3; C) 7.Qe2 C1) 7...Rg8 8.a3 (8.Qb5 Qb8 9.f4 c6 10.Qa5 b6 11.Qa3 b5 12.Qc3) 8...a5 9.ba5 Ra5 10.Bc3 Ra4 11.Bb2 Bd6 12.Nc3; C2) 7...Nb6 8.f4 (8.a3 Nc4 9.Bc3 Rg8 10.e4 c6 11.d3 Nb6 12.Qe3) 8...Rg8 9.Bd4 c6 10.a3 a5 11.b5 Bd6 12.Bg2; D) 7.Nc3 D1) 7...a6 8.a3 (8.f4 Rg8 9.a3 c5 10.bc5 Bc5 11.Rb1 b5 12.a4; 8.Be2 Rg8 9.a3 Bd6 10.f4 c5 11.b5 c4 12.Rb1; 8.Rb1 Rg8 9.a3 Bd6 10.f4 b5 11.Rg2 c6 12.Ne2; 8.h3 Rg8 9.a3 Bd6 10.f4 c5 11.bc5 Nc5 12.f5) 8...g6 9.f4 Bg7 10.f5 e5 11.h3 Nb6 12.d4; D2) 7...Rg8 8.a3 c5 9.bc5 Bc5 10.f4 a6 11.Be2 b5 12.a4; D3) 7...h6 8.a3 (8.f4 g6 9.a3 Rg8 10.Qe2 Nb6 11.d3 Bg7 12.Bg2; 8.h3 g6 9.a3 Bg7 10.Be2 Nb6 11.Na4 Na4 12.Bb5; 8.Be2 g6 9.a3 Bg7 10.Nb5 a6 11.Nd4 Nb6 12.Nb3; 8.Rg2 g6 9.a3 Bg7 10.h3 a5 11.Be2 ab4 12.ab4) 8...g6 9.f4 Rg8 10.Qf3 Bg7 11.Be2 c6 12.Nd1; D4) 7...g6 8.a3 (8.b5 Qe7 9.h3 0-0-0 10.a4 Qb4 11.Rb1 Qa5 12.b6) 8...Bg7 9.Nb5 a6 10.Nd4 Nb6 11.Nb3 Na4 12.Be5.

6.Rg1 Rg8 A) 7.a3 A1) 7...e6 8.Nc3 (8.f4 Bd6 9.Nc3 a5 10.b5 Qe7 11.Be2 0-0-0 12.Na4) 8...c5 9.bc5 Bc5 10.Rb1 Qc7 11.f4 a6 12.a4; A2) 7...c6 8.c4 (8.f4 g6 9.c4 e6 10.d4 dc4 11.Bc4 Nd5 12.Nd2; 8.Nc3 e6 9.f4 Bd6 10.b5 a6 11.bc6 bc6 12.Rb1; 8.d4 Nb6 9.Bd3 e6 10.f4 Bd6 11.Nd2 Na4 12.Qb1) 8...e6 9.d4 dc4 10.Bc4 Nd5 11.e4 N7b6 12.Bf1; A3) 7...a6 8.c4 (8.f4 e6 9.c4 dc4 10.Bc4 Nb6 11.Be2 Nfd5 12.Qc2; 8.Nc3 e6 9.f4 c5 10.bc5 Bc5 11.a4 Qc7 12.Bd3; 8.d4 e6 9.c4 c6 10.Nc3 Bd6 11.f4 dc4 12.Bc4) 8...e6 9.d4 Be7 10.Nc3 c6 11.Bd3 dc4 12.Bc4; A4) 7...a5 8.b5 (8.f4 ab4 9.ab4 Ra1 10.Ba1 e6 11.b5 Bc5 12.Bb2) 8...e5 9.c4 dc4 10.Qc2 Bd6 11.Bc4 a4 12.Nc3; B) 7.f4=+ B1) 7...c6 8.a3 (8.Be2 g6 9.Bd4 Bg7 10.Nc3 a5 11.a3 h6 12.h3; 8.c4 e6 9.a3 Be7 10.Nc3 dc4 11.Bc4 b5 12.Be2; 8.Bd3 g6 9.Bd4 Bg7 10.Nc3 a5 11.a3 b6 12.b5; 8.Nc3 e6 9.b5 Be7 10.bc6 bc6 11.Rb1 Qa5 12.Be2; 8.b5 e6 9.Nc3 cb5 10.Bb5 a6 11.Be2 b5 12.a4; 8.h3 e6 9.a3 b5 10.a4 ba4 11.c3 Nb6 12.Ba6; 8.Bd4 e6 9.a3 a6 10.Be2 c5 11.bc5 Bc5 12.Be5) 8...g6 9.c4 e6 10.d4 dc4 11.Bc4 Nd5 12.Nd2; B2) 7...g6 8.c4 (8.a3 Bg7 9.c4 dc4 10.Bc4 Nb6 11.Be2 Qd7 12.d4; 8.Be2 e6 9.a3 a5 10.b5 Ne4 11.c4 Qh4 12.Rg2; 8.Bg2 c6 9.b5 Bg7 10.c4 Nb6 11.bc6 bc6 12.d3; 8.Be5 e6 9.a3 Bg7 10.c4 Ne4 11.Bg7 Rg7 12.Nc3; 8.Qe2 Bg7 9.Qb5 Qc8 10.d4 a6 11.Qa4 Qd8 12.Nd2; 8.d4 e6 9.a3 a5 10.ba5 c5 11.c4 Bg7 12.dc5; 8.Bd4 e6 9.a3 Bg7 10.Nc3 h6 11.Qf3 h5 12.h3) 8...e6 9.a3 dc4 10.Bc4 Nb6 11.Be2 Nfd5 12.Nc3; B3) 7...a5 8.b5 (8.ba5 e6 9.a6 ba6 10.Nc3 Bc5 11.Rb1 c6 12.Na4) 8...e6 9.Nc3 Bd6 10.Qf3 a4 11.0-0-0 Qe7 12.Rg3; B4) 7...e6 8.a3 Bd6 9.Nc3 a6 10.Be2 c5 11.bc5 Bc5 12.Bf3.

4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 e5 8.h3 (8.Nc3 d4 9.Na4 Ne7=) 8...Bh5 (8...Be6 9.Nc3 Nd7 10.e4=) 9.g4 (9.Nc3 d4 10.Na4 c6=) 9...Bf7= 10.e3 Nd7 11.Be2 Ne7 12.d4 e4 13.Nfd2 Qa8 14.Nb3 Nc8 15.N1d2 Bb4 (15...Ncb6 16.0-0–/+) 16.0-0 0-0 17.c3 Be7 18.c4 dc4 19.Nc4 b6 (19...Nd6 20.Nd6 Bd6 21.Nd2=) 20.Nbd2 Nd6 21.Nd6 cd6 22.Qb1 d5 23.Rc1 Rc8 24.Rc8 Qc8 25.Bd1 (25.Bb2 f5+=) 25...Nf8 (25...f5 26.Qb3–/+) 26.Bb2 Qd7 27.Be2 Ne6 28.Qa1 Be8 29.Qa2 Qd6 30.Nb1 g6?? (better is 30...Qb4!? 31.Bc3 Qd6=) 31.Nc3 (better is 31.Ba3!? Qc7 32.Be7 Qe7 33.Qd5+-) 31...Bf7 32.Nb1 (better is 32.Qd5!? Qb4 33.Qa8 Bf8 34.Ba1+/–) 32...Bf8+= 33.Ba3 Qc7 34.Bf8 (34.Qd5? Qc2 35.Bf1 Qb1 36.Bf8 Kf8–+ (36...Nf8?! 37.Qc6–/+)) 34...Nf8 35.Qb2 Be6 36.Qc3 Qd6 (36...Qa7 37.Qb3=) 37.Nd2 (better is 37.Qc6!? Qd8 38.Nc3+/–) 37...Bd7= 38.Nb1 Ne6 39.Qa3 Qa3 40.Na3 Nc7 Attacking the isolated pawn on b5 41.Kg2 Kf7 42.Kg3 f5 ½–½. Shutov,V – Vitoshinskiy,Yuriy N (2100), Moscow Region–ch op, 2004. (=1.Nf3 d5 2.b4 Bg4 3.Bb2 f6)

4.c4 dc4 5.Qc2 Qd7 =.

4.c4 c6 5.cd5 (5.h3 Bf3 6.ef3 e5=) 5...Qd5 (5...cd5 6.a3=) 6.Nc3 Qd8 (6...Qd7 7.a3=) 7.d4 e6 8.a3 Bd6 (8...a5 9.b5=) 9.Ne4 (9.e4 a5 10.b5 Nh6+=) 9...Bc7 (9...Bf3 10.ef3 Ne7 11.Nc5 Bc5 12.dc5=) 10.Nc5+= Qc8 (10...b6 11.h3 bc5 12.hg4 cb4 13.ab4+=) 11.e3 Ne7 (11...b6 12.Ne4+=) 12.h3+/– Bh5 (12...Bf3 13.Qf3 b6 14.Nb3+/–) 13.Bc4 Bf7 14.Qb3 Nd5 15.e4 Nf4 (15...b6 16.ed5 ed5 17.Be2 bc5 18.dc5+=) 16.g3 b6 17.gf4 bc5 18.dc5 Bf4 19.Rg1 0-0? (better is 19...Bh6!?+-) 20.Bf6 Bh6 (20...g6+-) 21.Bg5 Bg5 22.Ng5 (22.Rg5?! a5+-) 22...Kh8 (22...Re8 23.Qg3 (23.Nf7?! Kf7 24.Qf3 Kg8+-) 23...g6 24.Qh4+- (24.Nf7?! Kf7 25.f4 Kg7+-)) 23.Nf7 (23...Rf7 24.Be6+-; 23.Ne6?! Be6 24.Be6 Qb7+-) 1–0. kamret (2165) – Stoppelhopser (2110), GameColony.com, 2003.

4.c4 Bf3 5.ef3 d4 (5...e5 6.cd5 Qd5 7.Nc3=) 6.c5 e5 7.Qb3 Ne7 (7...a5 8.Bb5 Nc6 9.Bc4=) 8.Bc4+= Nbc6?? (better is 8...Qd7+=) 9.Bf7 Kd7 10.Qe6 1–0. orane (2005) – tao, Live Game Caissa's Web, 2004.

4.e3 c6 5.Be2 e5 6.a3 Bd6 7.0-0 Ne7 8.Nd4 (8.Nc3 0-0=) 8...Be2=+ 9.Ne2 0-0 10.d3 a5 11.Nd2 (11.c3!?=+) 11...ab4–/+ 12.ab4 Ra1 13.Qa1 Bb4 14.Bc3 Bc3 (14...Bd6 15.Qb2–/+) 15.Nc3 (15.Qc3 b5–/+) 15...Qd6 16.Qa2 (16.e4 d4 17.Ne2 b5–/+) 16...f5 17.Qb3 b5 18.Nb5? (better is 18.d4–/+) 18...cb5–+ 19.Qb5 Nbc6 20.f3 (20.Qa4 Rb8–+) 20...Rb8 21.Qa4 Qc5 22.Re1 Rb2 23.Kh1 (23.h3–+) 23...Qc3 24.Rd1 (24.Qa8 Kf7 25.Rg1 Qd2–+) 24...Qd2! (25.Rg1 Rc2–+) 0–1. Hasler,Ulrich – Burkett,Max, IECG, 1996.

4.h3 Bf3 5.gf3 (5.ef3 e5=) 5...Nc6 6.a3 Qd6 7.Bg2 0-0-0 8.d4 e5 9.f4 (9.de5 Ne5 10.Bd4 Nc6=+) 9...ef4 10.f3? (better 10.Nd2!?=+) 10...Nge7 11.h4 Nf5 12.Bh3 g6 (12...Nce7!? 13.Qd3 g6 14.h5-+) 13.h5 Be7 (13...Qe6 14.Qd3-/+) 14.hg6 (14.Bf5 gf5 15.Bc1 Bf8=+) 14...hg6-/+ 15.Bf5 gf5 16.Rh8 Rh8 17.Kd2 Qd8 18.b5 (18.Kc1!?-/+) 18...Na5-+ 19.a4 (better 19.Kc3-+) 19...Nb3?? (better 19...Nc4 20.Kc1 Qg8-+) 20.cb3+- a5 (20...Kb8 21.a5+-) 21.Nc3 (21.ba6 ba6 22.Qc2 Qd7+-) 21...b6 (21...Bb4 22.Kc2+-) 22.Qf1 Qg8 23.e3?? (better 23.Rc1+-) 23...fe3 24.Ke3 (better 24.Kc1=) 24...Qg5?? (better 24...Rh2 25.Ne2 Qe6 26.Kd3 f4 27.Nf4 Qf5 28.Ke3 Bd6-/+) 25.Kd3+- f4 (better 25...Rh2 26.Ne2 f4+/-) 26.Bc1?? (better 26.Re1 Bb4 27.Kc2+-) 26...Qf5-+ 27.Ne4 de4 28.Kc4 ef3 (28...Rh2 29.Qd1 e3-+) 29.Qf3 Rh3?? (better 29...Qc2 30.Qc3 Qe2 31.Qd3 Qe6 32.d5 Qe5-+) 30.Qa8= Kd7 31.Qd5 (better 31.Qc6 Kd8 32.Qa8 Qc8 33.Qd5 Qd7 34.Qg8 Qe8 35.Qe8 Ke8 36.Bf4=) 31...Ke8?? (better 31...Qd5 32.Kd5 Rh1-+) 32.Qf5+- f3 33.Qh3 f2 34.Be3 f1Q 35.Rf1 Bb4 (35...Kf8 36.Qh8 Kf7 37.Qh5 Kf8 38.Bh6 Kg8 39.Qg6 Kh8 40.Qg7) 36.Qe6 Kf8 (36...Kd8 37.Rg1 Bf8 38.Rg8 c5 39.Rf8 Kc7 40.Qe7) 37.Rf6 (37.Bh6) 37...Kg7 38.Qf7 Kh8 39.Qf8! Bf8 40.Rf8 Kg7 41.Rd8 (better 41.Rc8 Kf6 42.Rc7+-) 41...c5 42.dc5 (42.bc6 Kg6 43.c7 Kf5 44.c8Q Ke4 45.Qh3 b5 46.ab5 a4 47.Re8) 42...bc5 (42...Kf7 43.c6 Kg6 44.c7 Kf5 45.c8Q Ke4 46.Re8 Kf3 47.Qf5 Kg3 48.Rg8 Kh4 49.Qg4) 43.Bc5 (43.b6 Kg6 44.b7 Kg7 45.b8Q Kf6 46.Rf8 Kg7 47.Qd6 Kh7 48.Qh6) 43...Kf6 44.Bd4 (44.b6 Kg6 45.b7 Kf6 46.b8Q Kg6 47.Rg8 Kf5 48.Kd5 Kf6 49.Qf4) 44...Ke7 (44...Kg5 45.b6 Kf5 46.b7 Kf4 47.b8Q Ke4 48.Qe5 Kf3 49.Qf5 Kg3 50.Rg8 Kh4 51.Qg4) 45.Rd5 Ke6 (45...Kf7 46.b6 Kg6 47.b7 Kf7 48.b8Q Ke7 49.Qc7 Ke6 50.Qd7) 46.b6 Ke7 (46...Kf7 47.b7 Ke8 48.b8Q Kf7 49.Qc7 Ke6 50.Qd7) 47.b7 Ke6 48.b8Q Ke7 (48...Kf7 49.Qc7 Ke6 50.Qd7) 49.Re5 (49.Qc7 Ke6 50.Qd7) 49...Kf6 (49...Kd7 50.Bb6 Kc6 51.Qc7) 50.Ra5 (50.Qe8 Kg7 51.Rh5) 50...Ke6 (50...Kf7 51.Ra7 Kg6 52.Rg7 Kf5 53.Qe5) 51.Qe5 (51.Qe8 Kd6 52.Be5) 51...Kf7 52.Qf6 (52.Qf6 Ke8 53.Qe6 Kd8 54.Bb6; 52.Ra7 Kg6 53.Rg7 Kh6 54.Qg5) 1-0. labruja – daleoeste, Rated Classical game, lichess.org, 2013.

4.h3 Bh5 5.g4 Bg6+= 6.e3 (6.Bg2 e5 7.a3 Ne7+=) 6...e6 7.b5 (7.a3 a5 8.Nc3 ab4 9.ab4 Ra1 10.Qa1 Nc6=) 7...a6 (7...Nd7 8.c4=) 8.a4 (8.Nc3!?+=) 8...ab5= 9.ab5 Ra1 10.Ba1 c6 (10...Nd7 11.c4=) 11.c4 (11.Nc3 Bd6+=) 11...Qa5 (11...Bd6 12.h4+=) 12.Nc3+= Bb4 13.Nd4 cb5 (better 13...e5!? 14.Nb3 Qd8+=) 14.cd5+- ed5 15.Bb5 Nd7 (15...Kf8 16.Nd5 Nc6 17.Bc6 bc6 18.Nb4 Qb4 19.Rg1+- (19.Nc6 Qe4 20.Rg1 Qc6–/+)) 16.0-0 (16.Nd5?! Be4 17.Nb4 Bh1+-) 16...Ne7 17.Ne6 Bf7 (17...Nc6 18.Nd5 Kf7 19.Nec7+-) 18.Ng7 Kf8?! (18...Kd8 19.Bd7 Kd7 20.Qf3+-) 19.Bd7 Kg7 20.g5! Bc3 (20...fg5 21.Na4 Double attack (21.Ne2 Decoy)) 21.Bc3 Qc7 (21...Qd8 22.gf6 Kh6 23.fe7 Rg8 24.Bg4 Qe7 25.Qf3+-) 22.Bf6 Kg6 (22...Kg8 23.Qa4 Nc6 24.Bc6 Qc6+-) 23.Qb1 Kh5 (23...Qc2 24.Qc2 Nf5 25.Qf5 Kh5 26.g6 Kh6 27.Qg5) 24.Bg4 Kh4 25.g6 1–0. DEFFM – GuestWCMS, freechess.org, 2020.

5.a3 =+.

5.Be2 e4 6.Nd4= Be2 7.Ne2 (7.Qe2 Qd7 8.a3=) 7...c5 (better 7...Bb4!? 8.Nf4 g6=) 8.bc5 Bc5 9.Ng3 (9.Nf4 Ne7 10.Qh5 g6 11.Qh4+=) 9...b5 (9...Qb6!? 10.Bc3 Ne7=) 10.0-0 (10.Ne4 Be3 11.de3 de4 12.Qh5 Kf8 13.Ba3 Ne7 14.Qb5 Qd7+-) 10...a5 (10...Na6 11.d3+=) 11.a4 b4 12.c3 (12.Ne4 de4 13.Qh5 Kf8 14.Qc5 Ne7+/-) 12...bc3 (12...Qc7!?+=) 13.Nc3+/- Nc6 (13...h5 14.Nh5 Qd7 15.d3 ed3 16.Nf4+-) 14.Nb5 (better 14.Nge4 Bd4 15.ed4 de4 16.Ne4+-) 14...Rb8?? (14...Nge7 15.Qh5 g6 16.Qh4+/-) 15.Ba3?? (better 15.Rc1 Qe7 16.Qh5 Kf8 17.Qd5+-) 15...Ba3+= 16.Ra3 Nb4 (16...Ne5!?+=) 17.Nf5+/- Nd3 (better 17...Qd7!?+/-) 18.Ng7+- Kf7 19.Nf5 Qd7 (19...Kf8 20.f3 Qd7 21.Nfd6+-) 20.Qh5 Ke6?? (20...Kf8 21.f3+-) 21.Nfd4 (better 21.Nbd4 Ke5 22.f4 ef3 23.Qf3 Qf5 24.Qf5 Kd6 25.Qe6 Kc7 26.Rc3 Kd8 27.Nc6 Kc7 28.Qf7 Kd6 29.Rf6 Nf6 30.Qe7) 21...Ke7 22.Qf5 (better 22.Rc3 Rb5 23.ab5+-) 22...Qf5 (22...Nh6 23.Qd7 Kd7 24.f3+-) 23.Nf5 Ke6 24.Nc7?? (24.Nfd4!? Kd7 25.Rc3+-) 24...Kd7?? (better 24...Kf5 25.Nd5 Ke5-+) 25.Nd5 (better 25.Rc3 Rb7 26.Na6+- (worse 26.Nd5 Ke6+/-)) 25...Ne7?? (better 25...Ke6 26.Rd3 ed3+=) 26.Nde7 (worse 26.Nfe7 Nb4 27.f3 f5+-) 26...Rb2 27.Rc3 Rd2 28.Nd4 (better 28.Rc4 Nb4 29.Re4+-) 28...Ke7+/- 29.Nc6 Ke6 30.Na5 f5 (30...Ra8 31.Nb3 Ra2 32.f3+-) 31.Nc4 (better 31.Nb3 Ra2 32.Nd4 Kf6 33.f3+-) 31...Rf2?? (better 31...Ra2 32.Nb6 Kd6+/-) 32.Rf2+- Nf2 33.Kf2 h5 34.a5 h4 (34...Ra8 35.Kg3+-) 35.Ra3 f4 (35...Kd5 36.Nd2+-) 36.h3 (better 36.ef4 Kd5 37.Nd2 Ra8+-) 36...fe3 37.Ke3 Rf8 (37...Kd5 38.Nd2+-) 38.a6 (better 38.Ke4 Rc8 39.Ne5 Rg8+-) 38...Rc8 (38...Kd5 39.Nd2 Kc6+-) 39.a7 Rc4 (39...Ra8+-) 40.a8Q Rc2 (40...Rc6 41.Qc6 Kf7 42.Ra7 Kf8 43.Qc8) 41.Qe4 Kd6 42.Ra6 Kc7 43.Qc6! Rc6 44.Rc6 Kc6 (44...Kd7 45.Rc4 Ke6 46.Rh4+-) 45.Kf4 Kd6 46.Kg4 Ke7 47.Kh4 Ke6 48.Kh5 Ke5 49.g4 Kf6 50.g5 Kg7 51.g6 Kh8 52.h4 Kg8 53.Kg5 Kh8 54.h5 (54.Kf6 Kg8 55.g7 Kh7 56.Kf7 Kh6 57.g8Q Kh5 58.Qg5) 54...Kg8 (54...Kg7 55.h6 Kf8 56.Kf6 Ke8 57.g7 Kd8 58.g8Q Kc7 59.Qe6 Kb7 60.h7 Kc7 61.h8Q Kb7 62.Qg7 Kb8 63.Qe8) 55.h6 Kh8 (55...Kf8 56.Kf6 Ke8 57.g7 Kd8 58.g8Q Kd7 59.Qc4 Kd6 60.h7 Kd7 61.Qb5 Kd6 62.h8Q Kc7 63.Qhb8) 56.h7 (56.Kf6 Kg8 57.h7 Kh8 58.g7 Kh7 59.Kf7 Kh6 60.g8Q Kh5 61.Qg3 Kh6 62.Qg6) 56...Kg7 57.Kh5 (57.h8R Kh8 58.Kf6 Kg8 59.g7 Kh7 60.Kf7 Kh6 61.g8Q Kh5 62.Qg3 Kh6 63.Qg6) 57…Kh8+- ½-½. Jimito100 (1945) - Onorevole (1960), Rated Bullet game, lichess.org, 2020.

4.Bg2 Nb6 5.d3 Na4 6.Bd4 b5 7.Nf3 (7.a3!?+=) 7...f6= 8.c3 Nh6 9.Be3 Nf5 10.Bd2 Nd6 11.Nd4 Nb6 12.0-0 (12.a4!? ba4 13.c4 dc4 14.h3=) 12...e5= 13.Nb3 Qd7 14.Re1 Bh3 15.Bh1 Qf7 16.e4 de4 17.Nc5 0-0-0 18.a4 Be7 (18...Na4 19.Na4 ba4 20.Qa4 h5+/–) 19.ab5+/– Nb5 20.Be4 Rd6 (20...Kb8 21.g4 Nd6 22.Qf3 Bg4 23.Na6 Kc8 24.Qg4 f5 25.Qh3 Ne4 26.de4 Qg6 27.Kf1+-) 21.Na3 Na3 22.Ra3 Rd5 23.Ra7 (23.Bd5?! Qd5 24.Ne4 f5+-) 23...Rhd8 (23...Bc5 24.bc5 Rc5+-) 24.Qa4!! (24.Bd5?! Qd5 25.Ne4 f5+-) 24...Bc5 (24...Na4 25.Ra8) 25.Qa6 Kd7 26.bc5 (better is 26.Rc7! Kc7 27.Qa7 Kc8 28.Qf7 R5d7+-) 26...Nc8 27.Qb5 (27.Bd5 Qd5 28.Qb7 Qb7 29.Rb7 Kc6+/–) 27...Ke6 (27...Ke7 28.Rc7 R5d7 29.Rd7 Bd7+-) 28.Qc6 R5d6 (28...Ke7 29.Rc7 R5d7 30.Rc8 Rc8 31.Qc8 Rd3 32.Qh3 Rd2+-) 29.cd6 Na7 (29...Rd6 30.Qc4 Ke7 31.Rc7 Bd7 32.Rc8 Bc8 33.Qc8 Qf8+-) 30.Qd5 (30...Kd7 31.Qf7 Kd6 32.Be3+-) 1–0. Schoenwaelder,Bernd (2000) – Pittag,Andreas (1730), Nettetal Chessgate op, 2004.

4.Bg2 e6 5.c4 Ngf6 6.Qb3 c6 (--> 3.g3 e6 4.Bg2 Nf6 5.c4 Nbd7 6.Qb3 c6).

5.Nf3 f6 6.0-0 e5=+ 7.a3 Bd6 8.d3 Ne7 9.Nbd2 (9.c4 0-0=) 9...Ng6 (9...a5 10.c3=+) 10.c4= d4 (10...0-0 11.e4=) 11.c5 (11.e3 de3 12.fe3 Qe7+=) 11...Bc7= 12.Qb3 Qe7 13.Ne4 Be6 14.Qc2 h5 15.h4 Ngf8 16.Bc1 Nh7 17.Bd2 f5 18.Neg5 Ng5 19.Ng5 (worse 19.hg5 0-0-0=+) 19...0-0 20.Ne6 Qe6 21.Qa2 Qa2 22.Ra2 Rae8 Black prepares e4 23.Rb2 a6 24.a4 Bb8 (24...e4 25.de4 fe4 26.Bg5+=) 25.Rbb1 Nf6 Black intends e4 26.Bf3 (26.b5 ab5 27.ab5 e4+=) 26...e4= 27.de4 fe4 28.Bg2 e3 29.fe3 de3 30.Bc3? (30.Be1 Be5=) 30...Ne4 (better 30...Bg3!? 31.Be1 Be1 32.Rbe1 Re5-/+) 31.Be4 Re4 32.Kg2 (32.Rf8 Kf8 33.Kg2 Rc4=) 32...Rg4 (32...Rf1!? 33.Rf1 Rc4=+) 33.Rf8= Kf8 34.Be1 Ke7 35.Rb3 Bf4 36.Kf3 Bh6 37.b5? (37.Bc3 g5 38.hg5 Bg5=) 37...ab5 (37...Ra4 38.ba6 ba6-/+ (worse 38...Ra6 39.Rb7 Ke8 40.Bc3+/-)) 38.ab5=+ Ke6 39.bc6 bc6 40.Rd3 Rc4 41.Rd6 Ke7 (better 41...Kf5 42.Rc6 Rc1=+) 42.Rc6+/- Kd7 43.Rd6 Kc7 44.Rd5 Kc6 (44...Rc1 45.Ba5 Kc6 46.Rh5 Rf1 47.Ke4+-) 45.Rh5+- Rc5? (better 45...Rc1 46.g4 Re1+-) 46.Rc5 Kc5 47.g4 g5 (47...g6 48.Bg3+-) 48.Bg3 (48.h5 Kd4+-) 48...Kd4 (48...gh4 49.Bh4 Bg7 50.Ke3+-) 49.hg5 Bg5 50.Bf4 Be7 51.Be3 Ke5 52.Bf4 Kf6 53.e4 Kg6 54.Ke3 Bc5 (54...Kf6 55.g5 Ke6 56.Kd3+-) 55.Kd3 Bb6 56.Kc4 Kf6 57.Kd5 White plans e5 57...Bd8 (57...Kg6 58.e5 Bc7 59.Be3+-) 58.e5 Kf7 59.e6 Ke8 60.Bh6 (60.g5 Kf8 61.Bd6 Kg8+-) 60...Ba5 61.g5 (better 61.Be3+-) 61...Bc3?? (better 61...Bd2+-) 62.g6 (62.g6 Bb2 63.g7 Bg7 64.Bg7+-) 1-0. dannysmet (2080) - Anatoliy2 (2100), Rated Blitz game, lichess.org, 2020.

5.Nf3 f6 6.h3 Bh5=.

5.Nf3 Ngf6 6.0-0 e6 7.a3 a5 8.c3 Bd6 9.d3 0-0 10.Nbd2 Re8 11.Qc2 Bh5 (11...Qb6 12.Nb3 ab4 13.ab4+=) 12.Nb3= a4 13.Nbd2 c5 14.b5 h6 15.e4 Bg6 (15...Qb6 16.Rae1 Qc7 17.ed5 ed5 18.c4=) 16.c4 Bh7?? (better is 16...d4=) 17.e5+– 1–0. Runic,Zoran (2410) – Lorscheid,Gerhard (2250), Bad Gleichenberg AUT, Styrian Open, 2014.

5.h3 Bf5=.

5.a3 e5 6.Nf3 Bd6 7.d3 0-0 8.0-0 c6 (8...a5 9.b5+=) 9.Re1 (9.c4!?=) 9...a5–/+ 10.ba5 Qa5 11.Qd2 (11.Nbd2!?–/+) 11...Qb6–+ 12.Qc1 e4 13.de4 Ne4 14.e3 Bf3 15.Bf3 Ndf6 (15...f5!?–+) 16.Rd1 (16.c4 Rfd8+=) 16...Qc7 (16...Rfe8 17.c4+=) 17.Bf6 (17.c4 Qe7=) 17...Nf6+= 18.Qd2 (18.c4!? Ra5 19.Ra2 dc4 20.Qc4+=) 18...Rfd8 19.Qd3 (19.c3 Be5–/+) 19...Qe7 (19...Be5 20.Ra2–/+) 20.a4 (20.Nd2 Be5 21.Ra2 b5–/+) 20...Nd7 21.c4 (better is 21.Qe2!?–/+) 21...Ne5–+ 22.Qe2 Nc4 (better is 22...Nf3 23.Qf3 dc4–+) 23.Qc2? (23.Nd2 Nb2 24.Rdc1 Na4–+) 23...Be5 (better is 23...Qf6 24.Bd5 cd5–+ (worse is 24...Qa1 25.Bc4 Qa4 26.Bb3–+)) 24.Ra2 Qb4 25.Nd2 Nd6 26.Rb1–/+ Qc3 27.Qc3 Bc3 28.Nb3 Nc4 29.Be2 Nd6 30.Nc5 b5!–/+ 31.Rb3 Bf6 32.a5 Nc4 33.a6 Ra7 34.Bc4?? dc4–+ 35.Rb1 Be7 36.Ne4 Rda8 37.Rba1 f5 38.Nd2 Bf6 39.Rd1 Ra6 40.Ra6 Ra6 41.Nf3 Ra1 42.Ra1 Ba1 43.Kf1 b4 44.Ke2 b3 45.Kd2?? c3 46.Kc1 c2 47.Ne1?? Bc3 48.Nd3–/+ Kf7 49.Nc5 Be1 50.f3 Bf2 51.Nb3 Be3 52.Kc2 g5 53.Kd3 Bb6 54.Nd2 Ke6 55.Nc4 Ba7 56.Na5 Kd5 57.Nb7?? Bb6–+ 58.Kc3 c5 59.h4 gh4 60.gh4 Kc6 61.Nc5 Kc5 62.Kd3 Kd5 63.h5 Ke5 64.Kc4 Kf4 65.Kd5 Kf3 66.Ke5 Kg4 67.h6 Be3 (67...Be3 68.Kd5 Bg5 69.Ke6 f4 70.Kd5 f3 71.Ke5 Bf4 72.Kd4 f2 73.Kd5 f1Q 74.Kc5 Be3 75.Kd5 Qb5 76.Kd6 Kf5 77.Ke7 Bc5 78.Kf7 Qc6 79.Kg7 Qg6 80.Kh8 Bd4 mate) 0–1. Pruk,Mateusz – Wisniewski,Szymon (1665), OOM w Sportach Umyslowych w Szachach C1 Poland, 2012.

5.d3 e5 6.a3 =+.

5.d3 e6 6.a3 (6.h3 Bf5 (< 6...Bb4 7.c3+/–) 7.g4 Bg6=+ (< 7...Bb4 8.c3+/–)) 6...Bd6 (6...a5 7.h3 Bf5 8.g4=+) 7.Nd2 (7.c4 0-0=+) 7...0-0 (7...a5 8.h3 Bh5 9.b5=+) 8.Ngf3 (8.h3 Bf5=+) 8...Bf3 (8...a5 9.b5=+) 9.Bf3 (9.Nf3 c5=+) 9...e5 (9...a5 10.b5=+) 10.c4= c6 (10...a5 11.c5 Be7 12.0-0=) 11.e4 (11.Qb3 dc4 12.dc4 Qe7=) 11...d4 12.c5 (12.0-0 a5 13.c5 Be7=) 12...Bc7 (12...Be7 13.Qc2=+) 13.0-0 (13.Qc2 Qe7=) 13...Qe7 (13...b6 14.Qa4 bc5 15.Qc6=) 14.Bg2 (14.Qc2 a5=) 14...Rfb8 (14...b6 15.cb6 ab6 16.f4=) 15.f4 Rd8 (15...b6 16.cb6 ab6 17.fe5 Ne5 18.Bd4=+) 16.f5 (16.fe5!? Be5 17.Rc1+=) 16...h6 (16...b6 17.cb6 ab6 18.Qc2=+) 17.Qf3 (17.Qc2 Ng4 18.Nc4 b5 19.cb6 ab6=) 17...Nh7 (17...a5 18.Rfb1=) 18.g4 (18.Nb3 b6=) 18...f6 (18...Qh4!?=+) 19.Qg3+= Re8 (19...b6 20.cb6 Nb6 21.Rfc1=) 20.h4 (20.Bd4!? ed4 21.Qc7+/–) 20...Bd8 (20...b6 21.cb6 Bb6 22.Rfc1=) 21.Bf3 Qf7 22.Bd1+/– Kh8 23.Bb3 Qe7 24.Nf3 Ndf8 25.h5 a5 26.Nh4 Ng5 27.Ng6 Ng6 28.hg6 ab4 29.ab4 Ra1 30.Ra1 Qf8 31.Bc1 Bc7 32.Bg5 fg5 33.Qf2 Qe7 34.Rf1 Qf6 35.Ra1 Rb8 36.Ra7+/– Qf8 37.Qa2 Qd8 38.Bf7 Qc8 39.Qe6+- Qe6 40.Be6 Bd8 41.Kf2 Be7 42.Ke2 Bf6 43.Kd2 Bd8 44.Bb3 Be7 45.Kc1 Bf6 46.Kb2 Bd8 47.Ka3 Bf6 48.Ka4 Be7 49.Ka5?? h5 50.gh5+/– g4 51.Bd1 g3 52.Bf3 Kg8 53.Ka4 Kf8 54.Kb3 Bg5 55.Kc4 Ke7 56.b5 Kd7 57.b6 Ke7 58.Ra2 Be3 59.Kb3 Kf6 60.Kc2 Kg5 61.Kd1 Kh4 62.Ke2 Kh3 63.Kf1 Bf2?? 64.h6+- (64...Be3 65.h7+-; 64.Rf2?! gf2 65.Kf2 Kh4+=) 1–0. Traverso,Agustin – Cuevas,Alex, Pan American–ch U12, 2001.

5.Nf3 +=.

5.h3 Bf5 6.g4 Be4 7.f3 =+.

5.h3 Bh5 6.a3 (6.g4 Bg6 7.g5 Ne4=) 6...e6=+ 7.c4 c6 8.cd5 cd5 9.Nc3 (9.Nf3 a5=) 9...a5 10.b5 Nc5 (10...Bc5 11.d4 Bd6 12.Nf3=+) 11.d3 (11.Nf3 d4 12.Nb1 d3=+) 11...a4 (11...Rc8 12.Nf3=) 12.Nf3 (12.g4!? Bg6 13.Nf3=+) 12...d4–/+ 13.Na2 (13.Nb1 Nb3 14.Ra2 Bf3 15.Bf3 Qa5 16.Nd2 Qb5 17.Nb3 ab3=+) 13...Qa5 (13...Nb3 14.g4 Na1 15.Qa1–/+) 14.Kf1 Nb3 15.Nd4 Na1 16.Qa1 Qb6 (16...e5 17.Nc2 Rc8 18.Nab4 Qb5 19.Be5=+) 17.Kg1 (17.g4 Bg6–/+) 17...Be7 (17...Rc8 18.g4 Bg6 19.Nc3–/+) 18.Kh2 0-0 19.Rf1 (19.Rc1 Rac8–/+) 19...Rfd8 20.f4 (20.Rc1 Rac8–/+) 20...Nd5 (20...Bc5 21.e3–/+) 21.Bd5 (21.g4 Bg6 22.f5 ef5 23.gf5 Bh5 24.Bd5 Rd5–+) 21...Rd5 (< 21...ed5 22.g4+=) 22.g4 Bf6 (22...Bg6 23.e4 Rb5 24.Nb5 Qb5 25.f5 ef5 26.gf5=+) 23.Nb4 (23.gh5 Bd4 24.Nb4 Bb2 25.Nd5 Qd4–/+ (25...Ba1?? 26.Nb6 Ra5 27.Ra1+-; 25...ed5 26.Qb2 Re8 27.Rf3=; 25...Qb5?! 26.Qa2 Qb3 27.Qb3 ab3 28.Rb1 ed5 29.Rb2 Ra3 30.Kg3–+)) 23...Rd4–+ (23...Bd4? 24.Nd5 ed5 A) 25.gh5?! Bb2 (25...Qb5?? 26.Bd4 Re8 27.Rf2+-) 26.Qb2 Re8=; B) 25.Bd4+-) 24.gh5 Rd7 (better is 24...Rb4!? 25.ab4 Qe3 (25...Qb5? 26.Bf6 Qh5 27.Rg1+-) 26.Bf6 Qe2 (26...gf6?? 27.Rg1 Kf8 28.Qf6+-) 27.Kh1 gf6 28.Rg1 Kf8 29.Qf6 Qd3–/+) 25.Bf6= gf6 26.Qf6 Qd4 (26...Qb5 27.Rg1 Kf8 28.h6 Qg5 29.Rg5 Rad8 30.Rg8 Kg8 31.Qg7) 27.Rg1 Kf8 28.Qg5 Rad8 29.e4 Qh8 30.Qc5 Ke8 31.e5 f6 32.f5 fe5=+ 33.fe6 Re7 34.Nd5+/– Rd5?? 35.Qd5+- Qf8 36.Qe5 (36...Re6 37.Qe6 Kd8 38.Rg8 Qg8 39.Qg8 Kc7 40.Qh7 Kd6 41.h6 Ke6 42.Qb7 Ke5 43.h7 Kd4 44.h8Q Kd3 45.Qf3 Kc4 46.Qhc3 Kb5 47.Qfc6) 1–0. Quintana,Emilio – Ruiz Garcia,Jose Manuel, Santomera op, 1993.

4.b5 Nd7 5.Bg2 Ngf6 6.Bf3 (6.c4 c6=+) 6...a6 (6...Bf5 7.Bg2–/+) 7.a4 Bf5 8.e3 ab5 9.ab5 Be7 (9...Ra1 10.Ba1 Bd6 11.Nc3–/+) 10.d3 (10.Ra8 Qa8 11.Nc3 Nb6–/+) 10...Ra1 11.Ba1 0-0 12.Ne2 Bb4 13.Bc3 Qe7 14.0-0 Bh3 15.Re1 Bd6 16.Bg2 (16.Nd2 Ra8–/+) 16...Bg2 17.Kg2 c6 18.bc6 bc6 19.Nd2 Ra8 20.d4 e4 21.Ng1 Nf8 (21...Qe6 22.Ne2–/+) 22.f3 (22.Qe2 Ne6–/+) 22...Ng6 23.Qe2 Ra2 24.Nf1 (24.fe4 Ne4 25.Qd3–+) 24...ef3 25.Nf3 Ne4 26.Qd3? (26.Bd2–+) 26...Ra3 27.Qe2 Nc3 28.Qd2 Bb4 29.Qc1 Na2 30.Qb2 Be1 31.Ne1 Qb4 32.Qb4 Nb4 33.Nd2 Re3 34.Kf2 Re1 35.Ke1 Nc2 (36.Ke2 Nd4 37.Ke3 c5–+) 0–1. Hasler,Ueli – Souza,Antonio (2140), CiF, 2005.

4.Be5 f6 5.Bc3 d4 =.

4.Bg2 Nc6 (A) 5.h3 Bf5 6.a3 (6.b5 Nd4 7.Bd4 ed4 8.Nf3 Bc5 9.0-0) 6...Nf6 7.Nf3 e4 8.Nd4 Nd4 9.Bd4; (B) 5.a3 Nf6 6.c4 (6.Nf3 Bd6 7.0-0 Qe7 8.Nc3 a5 9.b5; 6.h3 Bf5 7.Nf3 e4 8.Nd4 Nd4 9.Bd4) 6...Qd6 7.cd5 Nd5 8.Nc3 Nc3 9.Bc3; (C) 5.b5 Nd4 6.Bd4 (6.c4 dc4 7.Bb7 Rb8 8.Bg2 Bc5 9.Qa4) 6...ed4 7.Nf3=+ Bc5 8.c3 Bf3 9.Bf3.

4.Bg2 Nf6 5.a3 (5.Be5 Bb4 6.c3 Nc6= 7.d4 Ba5 8.Qb3 0-0 9.Qb7) 5...Nbd7=+ (5...Bd6 6.h3 (6.c4 c6 7.c5 Bc7 8.Nf3 Nbd7 9.0-0; 6.Nf3 Nbd7 7.0-0 a5 8.b5 0-0 9.d4) 6...Bc8 7.Nf3 Qe7 8.d3 Nbd7 9.Nbd2; 5...Nc6 6.h3 (6.c4 Qd6 7.cd5 Nd5 8.Nc3 Nc3 9.Bc3; 6.Nf3 e4 7.Nd4 Nd4 8.Bd4 a5 9.Nc3) 6...Bd7 7.b5 Nd4 8.e3 Nb5 9.Be5) 6.Nh3 (6.c4 c6=+ 7.cd5 cd5 8.Nf3 Bd6 9.Nc3; 6.h3 Be6 7.c4 c6 8.cd5 Bd5 9.Nf3; 6.Nf3 Bd6 7.0-0 a5 8.b5 0-0 9.d4) 6...a5 (6...c5 7.f4 e4 8.Nf2 cb4 9.Ng4) 7.c3 (7.b5 Bd6=+ 8.0-0 0-0 9.f4) 7...Bd6–/+ 8.0-0 Nb6 (8...0-0 9.f4) 9.f4 (9.d3 ab4 10.ab4 Ra1 11.Ba1 Qd7–/+) 9...Bh3 (9...Nc4 10.Qc2–/+) 10.Bh3 ef4 11.e3? (better is 11.gf4 Nc4 12.Qc2–/+) 11...fg3 12.c4 (12.hg3 Nc4 13.Ra2–+) 12...gh2 13.Kh1 (13.Kg2 dc4 14.Qf3 Nbd5–+) 13...Ne4 (< 13...Nc4 14.Bf6 gf6 15.Qa4 c6 16.b5–+; < 13...dc4 14.Bf6 gf6 15.b5–+; < 13...ab4 14.Bf6 gf6 15.cd5–+) 14.Rf3 (14.c5 Ng3 15.Kg2 Nc4 (< 15...Nf1 16.Qf1 Na4 17.cd6 Nb2 18.Qb5 Kf8 19.Qb7 cd6 20.ba5–+) 16.cd6 Nb2 (16...Nf1?! 17.Qf1 Nb2 18.Qb5 Kf8 19.Qb7 cd6 20.ba5–+) 17.d7 Kf8–+) 14...Nc4 (< 14...ab4 15.c5 Bc5 16.ab4 Ra1 17.Ba1–+) 15.Bg7 (15.Bd4 Ne5 16.Be5 Be5–+) 15...Rg8 (16.Nc3 Rg7 17.Qa4 c6 18.Ne4 de4–+) 0–1. bukvar – pierre, internet, 2009.

5.Bb2 Nb4 6.a3 Nc6 7.Bg2 Nf6 8.d3 Bc5 9.d4 Bb6 10.c3 0-0 11.Qd3 Qd7 12.Qb5 a6 13.Qb3 Na5 14.Qc2 (14.Qb4!?–/+) 14...Bf5–+ 15.Qc1 (15.Qd1 Qb5 16.Ra2–+) 15...Nb3 16.Qd1 Na1 17.Ba1 c5 18.e3 Rac8 19.Ne2 cd4 20.ed4 Rfe8 21.0-0 Bc7 22.Nd2 Qe7 23.c4 (23.Re1 Bd3 24.Qb3–+) 23...Qe2 24.cd5 (24.c5 b6–+) 24...Bd6 25.Bf3 Qd1 26.Rd1 Ba3 27.Kg2 (27.d6 b5–+) 27...Bb4 28.Nb3 (28.Nb1 b5–+) 28…Bc2 (29.Rc1 Bb3–+) 0–1. 5352 – numo, Live Game Caissa's Web, 2004.

5.Bb2 Nb4 6.a3 Nc6 7.Bg2 Nf6 8.Nf3 Bd6 9.0-0 0-0 10.d3 Qe7 11.Nbd2 Rae8 12.Rb1 Ba3 13.Bf6 (13.Ba3 Qa3 14.Rb7 Rb8 15.Rb8 Rb8=) 13...Qf6=+ (worse 13...gf6 14.Rb7 Rb8 15.Rb8 Rb8 16.c4=) 14.Rb7 Rb8 15.Qb1 Bb4 16.Rb8 Rb8 17.Qa2 Rb5 (17...Be6 18.c4 d4 19.Ne4=+) 18.Nb3 (18.c4 Ra5 19.Qc2 d4=+) 18...Bc3-/+ Black prepares d4 19.h3 Bd7 20.Kh2 d4 (20...a5 21.e3=+) 21.Nfd2 (21.e3!?=+) 21...Qh6-/+ 22.Nf3 Qe6 ½-½. petrobbo (1915) - Marquis of Somerset (2090), ChessWorld.net, 2010.

5.Bb2 Nb4 6.Bg2 c5 7.Nf3 Nf6 8.0-0 Bd6 9.d3 0-0 10.Ne5 Be5 11.Be5 Qe7 12.Bf6 Qf6 (< 12...gf6 13.Re1 Rfd8 14.c3+=) 13.Nd2 Rae8 14.Nf3 Re7 15.h3 Bf3 16.Bf3 d4 17.a3 Nc6 18.Rb1 Qe6 19.Kh2 Rd8 20.Rb2 Qd6 21.Re1 Qf6 22.Qb1 b6 23.Qc1 Ne5 24.Kg2 Rde8 25.Be4 Nc4 26.Bh7 (better is 26.Rb1!?–/+) 26...Kh7–+ 27.dc4 Re2 28.Re2 Re2 29.Qf1 d3! 30.Ra2 (30.cd3 Qb2) 30...Qe6 (30...dc2 31.Qe2 c1Q 32.Rc2 Qc6 33.f3–+) 31.Ra1 Qe4 (31...dc2?! 32.a4–+; 31...Qc4?! 32.cd3 Qd3 33.Qb1–+) 32.Kg1 d2 (33.Rd1 Re1 34.Rd2 Rf1 35.Kf1 Qc4 36.Ke1 Qe6 37.Re2 Qh3–+; 32...dc2?! 33.Rc1–+; 32...Rc2?! 33.Rd1 Rc3 34.a4–+; 32...Qc4?! 33.cd3 Qd3 34.Ra2–/+) 0–1. hal1958 – solya, HCL–E950 playchess.de, 2003.

5.Bb2 Nb4 6.Bg2 Bf5 7.d3 Nf6 8.Nf3 Bc5 9.0-0 c6 (9...0-0!?=) 10.Nbd2 0-0 11.Nb3 Bd6 12.Nh4 Bg4 13.h3 Bd7 14.e4 Re8 15.Re1 de4 16.de4 Be5 17.c3 Be6 18.Nd4 Bd4 19.cd4 (19.Qd4? Nc2 20.Qd1 Qd1 21.Rad1 Ne1 22.Re1 Rad8–+) 19...Bc4 (19...Ba2? 20.Ra2 Na2 21.Qa4+-) 20.Re3 Qb6 (20...Ba2? 21.Ra2 Na2 22.Qa4+-) 21.Ba3 (better is 21.Qd2!? Rad8 22.Nf5+/–) 21...a5= (21...Na2? 22.Nf5+-) 22.Nf3 (better is 22.Qd2=) 22...Re4–/+ 23.Ne5 (23.Re4 Ne4 24.Ne5 Bd5–/+) 23...Rd4–+ 24.Qc1 (24.Qb1 Be6 25.Bb2–+) 24...Ba2 0–1. heaterhog (2020) – marekt (2200), gameknot.com, 2015.

5.Bf4 Bb4 6.Bh3 Qf6 7.c3 Bh3 8.Nh3 =.

5.Bf4 Qf6 6.Nc3 (6.c3 Bb4 7.h3 Bf5=) 6...Nb4+= (6...Bb4? 7.Nd5 Bd2 8.Bd2+-) 7.a3 d4 8.Ne4 Qc6 9.ab4 Qe4 10.f3 Qc6 11.b5 Qd5 (11...Qb5 12.fg4) 12.Bc7 Nf6 13.b6 a6 14.Nh3 Qc6 15.Nf4 Bd7 16.Bg2 Bd6 17.Bd6 Qd6 18.Qb1 0-0 19.0-0 Bb5 20.Nd3 Rfe8 21.Re1 Qb6 22.Qb2 Rac8 (22...Qd6 23.f4=+) 23.Ra4 Rc6 24.Rd4 (24.Rb4!?=+) 24...Rc2!–/+ 25.Qc2 Qd4 26.Kf1 Rd8 27.Rc1 g6 28.Qc3 Bd3 29.ed3 Qd3 30.Qd3 Rd3 31.Ke2 Ra3 32.Rb1 b5 33.f4 Ng4 34.h3 (34.Rh1!?–/+) 34…Rg3–+ (35.Bb7 Rh3 36.Ba6 Rh2 37.Kd3 Nf6–/+) 0–1. touwladder – JF_, ChessWorld.net, 2004.

5.a3 (1) 5...Nd7 6.c4 (6.d4 c6 7.h3 Be6 8.de5 Ne5 9.Nd2; 6.h3 Be6 7.c4 c6 8.cd5 cd5 9.Nf3) 6...Ngf6 7.cd5 Nd5 8.Nc3 c6 9.d4; (2) 5...Ne7 6.c4 (6.Nc3 Nd7 7.h3 Be6 8.Nf3 d4 9.Ne4; 6.h3 Bf5 7.c4 c6 8.Nf3 Nd7 9.cd5; 6.Nf3 Nd7 7.h3 Bf5 8.g4 Bg6 9.Nh4) 6...Nbc6 7.h3 Bd7 8.cd5 Nd5 9.Qc2; (3) 5...Nf6 6.c4 (6.h3 Be6 7.c4 Nbd7 8.c5 Qa6 9.Nf3; 6.Nf3 Nbd7 7.d4 e4 8.Ne5 Be6 9.c4) 6...c6 7.cd5 cd5 8.h3 Be6 9.Nf3.

5.c4 (1) 5...Ne7 6.c5 (6.h3 Bf5 7.cd5 Nd5 8.a3 e4 9.Qc2; 6.Nf3 Nd7 7.c5 Qf6 8.0-0 c6 9.d4; 6.Qa4 c6 7.c5 Qe6 8.Nf3 Nd7 9.Qa5) 6...Qe6 7.Nf3 Nd7 8.0-0 0-0-0 9.Qa4; (2) 5...c6 6.c5 (6.h3 Bf5 7.c5 Qe7 8.Nf3 Nd7 9.0-0) 6...Qe6 7.h3 Bh5 8.d4 Nd7 9.Nc3; (3) 5...Qb4 6.Qb3 Nd7 7.Bd5 c6 8.Bg2 Ngf6 9.Nf3; (4) 5...Nf6 6.c5 (6.h3 Bf5 7.cd5 Nd5 8.a3 e4 9.Qc2; 6.cd5 Nd5 7.Nc3 c6 8.b5 Nd7 9.bc6; 6.a3 c6 7.cd5 cd5 8.h3 Be6 9.Nf3; 6.b5 c6 7.cd5 cd5 8.d4 Qb4 9.Bc3) 6...Qe6 7.h3 Bf5 8.Nf3 Nbd7 9.Qa4.

4.a3 Nd7 5.Bg2 a6 6.c4 Nb6 7.cd5 ed5 8.Nc3 Nf6 9.d3 Be7 10.Nf3 c6 11.0-0 0-0 12.Ne5 Be6 13.Qc2 Nbd7 14.Na4 Rc8 15.Nd7 Nd7 (< 15...Qd7 16.Nb6 Qc7 17.Nc8 Rc8 18.Bd4+-) 16.Nc5 Nc5 17.bc5 d4 18.a4 Bd5 19.Bh3 Be6 (19...Rb8 20.a5=) 20.Bg2 (better is 20.Be6!? fe6 21.Qc4+/–) 20...Bd5 21.Bd5 Qd5 22.Rfc1 Rcd8 23.a5 h5 (23...Rfe8 24.Ra4 Bf6 25.Rb4=) 24.Qc4 (24.Ra4 Bf6+=) 24...Rd7 25.Qd5 Rd5 (< 25...cd5 26.Bd4 Rc8 27.Rc2+/–) 26.Ba3 Re8 27.Kf1 Bd8 28.Bb4 h4 29.Rab1 hg3 30.hg3 Rh5 31.Re1 Be7 32.Rbc1 Rd8 33.Kg2 Rdd5 34.Rh1 Rhe5 35.Rc4 Re2 (35...Bc5?! 36.Bc5 Rc5 37.Rd4=) 36.Kf1 Ree5 37.Kg2 Bc5 38.Bc5 Rc5 39.Rd4 Rcd5 40.Rdh4 f6 41.Rh8 Kf7 42.Rb8 Re7 43.Rb1 Rb5 44.Ra1 Rd7 45.Ra3 Ke6 46.Kf3 Kd5 47.Ra4 (47.Rh8 Kc5 48.Rh4 Rd4–/+) 47...c5 48.Ra3 c4 49.Rc8 Rc5 50.dc4 Kc4 51.Rb8 (51.Rc5!? Kc5 52.g4–/+) 51...Kb4 52.Ra1 Kb5 53.Rb1 Ka5 54.R8b7 Rb7 55.Rb7 g5 56.Kg4 Rc4 (56...Rb5 57.Rd7–/+) 57.f4 gf4 58.gf4 Rc6 (58...Rb4 59.Rf7 Rb6=) 59.Kf5= Ka4 60.Rf7 Kb5 61.Rf6 Rf6 62.Kf6 a5 63.f5 a4 64.Ke7 a3 65.f6 a2 66.f7 a1Q 67.f8Q ½–½. Bartle,Georg (1710) – Wissler,Martin, Baden–ch AT3, 2005.

4.Bg2 Bb4?? 5.Bg7 Nf6 6.Bh8 +-.

4.Bg2 Nd7 5.Nf3 f5 6.0-0 Ngf6 7.a3 Bd6 8.d3 0-0 9.c4 c6 10.Nbd2 e5 11.Qb3 Kh8 12.h3 Bh5 13.Rfe1 e4 14.Nd4 e3 15.fe3 Bg3 16.Ne6 (better 16.Rf1!? Qe8 17.e4 dc4 18.Nc4 fe4 19.de4=) 16...Qe7=+ 17.Nf1 Qe6 18.Ng3 Qe3 19.Kh2 Bf7 20.Qc3 Rae8 (better 20...Qg5 21.e3 Nb6-+) 21.Nf5?? (better 21.Qd4 Qg5 22.Rf1-/+) 21...Qf4-+ 22.Ng3 (22.Kg1 Qf5 23.e4 de4 24.Re4-+) 22...Nh5 23.Qg7 (23.Kh1 Qg3 24.e4-+) 23...Ng7 24.Rf1 Qd6 (better 24...Qc7 25.e4 h5 26.Bc1-+) 25.Bg7 Kg7 26.c5 Qc7 0-1. carlos78 (2230) - Metalhead_666 (2220), Rated Blitz game, lichess.org, 2015.

5.Bg2 c6 6.Nf3 a5 7.c3 Nbd7 8.h3 Bf3 9.Bf3 Bd6 10.d3 Qc7 11.Nd2 h5 12.Qb3 Ne5 13.Bg2 Ng6 14.c4 Bg3 (14...h4 15.g4=+) 15.fg3 (15.cd5!? a4 16.Qa2 ed5 17.fg3 Qg3 18.Kf1-/+) 15...Qg3=+ 16.Kf1 Nf4 17.Rg1 Qe3 (worse 17...Ng2 18.Rg2 Qh3 19.ba5+=) 18.Qd1 Ng4 (better 18...Nh3 19.Bh3 Qh3 20.Rg2 Ng4-/+) 19.hg4+= hg4 20.Bc1 Ng2 21.Nb3 Qg3 22.e3?? (22.cd5 Rh2 23.Qd2 Qh3-+) 22...Rh2 (better 22...Rh6 23.Ke2 Rh2-+) 23.Ra2= (23.Na5?? Ne3 24.Be3 Qh3 25.Rg2 Qg2 26.Ke1 Rh1 27.Bg1 Rg1) 23...Qf3 (23...Ne3 24.Be3 Qh3 25.Rag2 Rg2 26.Rg2 Qe3 27.Na5= (worse 27.Rg4 ab4 28.Rg7 Ke7-+)) 24.Qf3 gf3 25.Na5 (25.Rf2 ab4 26.Rf3 dc4 27.dc4 ba3 28.Rg2 Rg2 29.Kg2 f6+=) 25...Ne3=+ 26.Be3 Ra2 27.Rg7 Kf8 (27...0-0-0 28.Rf7 Rh8 29.Rf3 Rh1 30.Bg1 Ra1 31.Kf2 dc4 32.Rf8 Kd7 33.Nc4 Rag1 34.Rf7 Kd8 35.Rb7 Rf1 36.Ke2 Re1 37.Kd2 Rd1 38.Kc3=) 28.Rh7 (28.Rg3 Ke7 29.Nb7 R8a3 30.Bc5 Ke8 31.Nd6 Kd7 32.Rf3 f5+=) 28...Kg8 29.Rh3 e5 30.Rf3 Ra3 31.Rg3 Kf8?? (better 31...Kh7 32.Rh3 Kg6 33.Rg3 Kf5 34.cd5 cd5 35.Rf3 Kg4 36.Rf7 Rd3=+) 32.Bc5+- Ke8 33.Rg8 Kd7 34.Ra8 dc4 (34...Ra1 35.Ke2 Ra2 36.Kd1+-) 35.dc4 Ke6 (35...Ra1 36.Kg2 Ra2 37.Kg3 f5+-) 36.Nb7 (better 36.Re8 Kf5 37.Nb7+-) 36...Ra8= 37.Ke2 Ra3? (37...f5 38.Na5 Ra6 39.Kd3=) 38.Bf2 (38.Nd8 Kf5+-) 38...Rc3? (38...f5 39.b5 cb5 40.cb5=) 39.Nc5 (better 39.Nd8!? Kd7 40.Nf7+=) 39...Kf5= 40.b5 cb5 41.cb5 Rc2 42.Kf3 Rb2 43.b6 (better 43.Ne4=) 43...Rb6-/+ 44.Ne4 (44.Be3 Rb4-/+) 44...Rb3 (44...Rb4 45.Nc5-+) 45.Be3-/+ Kg6 46.Nc5 Ra3 47.Ke2 f5 48.Bf2 (better 48.Nd7!? Ra2 49.Kf3-/+) 48...f4-+ 49.Nd3 Kf5 0-1. Yip,Carissa (2420) - Coleman,T (2330), I'M Not A GM Speed Chess (1), 2021.

5.Bg2 c6 6.Nf3 Bd6 7.0-0 Nbd7 8.d3 h5 9.Nbd2= Qc7 10.c4 h4 (10...dc4 11.Nc4 Bf3 12.Bf3=) 11.Nh4+= Rh4 12.c5 (12.gh4 Bh2 13.Kh1 Be5+=) 12...Bf4 (12...Bg3!? 13.hg3 Rh5=+) 13.gh4+= (13.gf4? Qf4 14.f3 0-0-0-+ (14...Qh2 15.Kf2 Bh3 16.Rg1-+)) 13...Bh2 14.Kh1 0-0-0 15.Nf3 (15.f3 Bf5 16.Qa4 Qf4 17.Bf6 Nf6 18.Qa7 Qh4 (18...Qd2?! 19.Kh2 Qf4 20.Kg1 Qd4 21.e3 Qe3 22.Rf2=) 19.Qa8 Kc7 20.Qa5 Kd7 21.Qd8 Kd8 22.Rf2 Bg3 23.Kg1 Bf2 24.Kf1 Bd4 25.Ne4 Ne4 26.fe4 Qf2) 15...Bf4 (15...Bf3 16.Bf3 (16.ef3? Rh8 17.Re1 Qf4-+) 16...Rh8 17.Kg2=+) 16.e3 Bg5 17.Kg1 (17.hg5 Rh8 18.Bh3 Rh3 (18...Bh3?! 19.Re1=) 19.Kg2 Nh7-+ (worse 19...Bf3 20.Kh3 Bd1 21.gf6-/+; 19...Rf3?! 20.gf6 Rh3 21.Rh1 Bd1 22.Rh3 Nf6 23.f4=)) 17...Rh8 18.Qa4 (18.Qe2 Rh4 19.Rfd1 e5=+) 18...Bf3-/+ 19.Bf3 Rh4 20.Rfd1?? (better 20.Rfe1 Nc5 21.Qc2-/+) 20...Be3!-+ 21.Bg2 (21.fe3 Qg3 Mate attack) 21...Qg3 22.Qc2 Ng4 (22...Ng4 23.Kf1 Rh1 24.Bh1 Nh2 25.Ke1 Qg1 26.Ke2 Qf2) 0-1. mizuzul – marekt, ChessWorld.net, 2021.

5.a4 Qb6 6.c3 Nf6 (6...a5 7.f3 Bh5 8.b5–/+) 7.Nf3 (7.a5 Qc7=+) 7...a5 8.0-0 (8.b5 cb5 9.Qb3 b4–/+) 8...Nbd7 9.Qc2 (9.b5 cb5 10.Ba3 ba4 11.Bf8 Rf8 12.Qa4 Bf3 13.Bf3 Qc6–/+) 9...ab4 10.cb4 (10.d3 b3 11.Qd1 Nc5–/+) 10...Bb4 11.d3 (11.h3 Bf3 12.Bf3 e5–+) 11...0-0–+ 12.Nbd2 Qc5 13.Qc5 Bc5 (13...Nc5 14.Rfb1 Bd2 15.Nd2 Be2 16.Ba3 Na4 17.Bf8 Kf8 18.Rb7 Bd3 19.Rb4–/+) 14.Rfb1 (14.h3 Bf3 15.Nf3 Ra7–/+) 14...b6 (14...e5 15.h3 Bf3 16.Nf3–/+) 15.Bf6 gf6 (< 15...Nf6 16.d4 Be7 17.Rb6+=) 16.d4 Bd6 17.e3 (17.h3 Bf5 18.Rc1 Rfc8–/+) 17...Ra7 (17...Bf5 18.Rb2–/+) 18.Rc1 c5 19.Nb1 (19.h3 Bf3 20.Bf3 cd4 21.ed4 Rfa8–+) 19...Rfa8 20.Nc3 Be7 21.Rc2 Bf5 22.Rca2 Bd3 23.Bf1–/+ Bf1 24.Kf1 Nb8 25.Rb1=+ Bd8 26.Rb5 Ra5 27.Nd2 Rb5 28.Nb5 Nc6 29.Nf3 Be7 30.Nc3 Kf8 31.Ke2 Ke8 32.Rb2 Ra6 33.Ne1? cd4–+ 34.ed4 Nd4 35.Kd3 Bc5 36.f4 Kd7 (37.Nc2 Nc2 38.Rc2 Kc6–+) 0–1. Buczko,J – Andi,Peter (2210), Szekszard op, 1998.

5.a4 Nf6 6.b5 =+.

5.f3 Bf5 =+.

5.Nf3 Bb4?? 6.Bg7 Nf6 7.Bh8 +-.

5.Nf3 Nf6 6.a3!? =+.

5.Nf3 Nf6 6.d3 Bb4–/+ 7.Nbd2 Bf3 8.Bf3 Qa5 (better is 8...Nbd7–/+) 9.0-0?? (better is 9.Rb1–/+) 9...Bd2–+ 10.c3 Bc3 11.Rb1 Bb2 12.Rb2 b6 13.Qc2 0-0 14.Rc1 c5 15.e3 Nc6 16.Rcb1 Rac8 17.h4 c4 18.Be2 cd3 19.Qd3 Ne4 20.Rc1 Ne5 21.Qd1 Nc3 22.Qe1 Ne2 (23.Qe2 Rc1 24.Kg2 Qa4–+) 0–1. Variax (1645) – pierre (2165), internet, 2007.

5.Nf3 Nf6 6.Ne5 Bf5 =+.

5.a3 a5 6.b5 Nbd7 7.c4 c6 (< 7...dc4 8.Bb7 Rb8 9.Bc6+=) 8.bc6 bc6 9.cd5 (9.Qa4 Rc8=+) 9...cd5 10.Nc3 Rb8 11.Rb1 Be7 12.d3 0-0 (12...Qc7 13.Na4–/+) 13.Nf3 (13.h3 Bf5=+) 13...Qc7–/+ 14.0-0? (better is 14.Na4!?–/+) 14...Rb2!–+ 15.Rb2 Qc3 16.Rb3 Qc7 17.Nd4 (17.Qd2 Nc5 18.Rb5 a4–+) 17...Nc5 18.Nb5 Qd7 19.Rb2 Rb8 20.a4 Ne8 (20...Bf5 21.Qc2–+) 21.h3 (21.d4 Nb7–+) 21...Bh5 (21...Bf5 22.d4 Ne4 23.Qc1–+) 22.g4 (22.d4 Ne4 23.Be4 de4–+) 22...Bg6 23.Qd2 (23.Qc2 Bf6 24.Rbb1 Rc8–+) 23...Na4 24.Qc2 (24.Qf4 Nd6 25.Qa4 Rb5 26.Rc1–+) 24…Nb2 (25.Qb2 Rb5–+) 0–1. Popovic,Danijela – Cejic,Dusica, YUG–Cup qual (Women), 1991.

5.a3 c6 6.c4 Nbd7 (6...dc4 7.Nf3–/+) 7.cd5 ed5 8.Nf3 Bd6 9.0-0 0-0 10.Qc1 (10.h3 Bf3 11.Bf3 Qe7=+) 10...Re8 (10...a5 11.ba5 Qa5 12.Qc2=+) 11.Nc3 (11.h3 Bh5=+) 11...Bf8 (11...Ne5 12.Nd4=+) 12.d3 a5 13.Qf4 Qb6 (13...Qb8 14.Qb8 Nb8 15.b5=) 14.b5= Bf3 15.Bf3 Ne5 16.Rab1 d4=+ 17.bc6 Nf3–/+ 18.Qf3 Qc6 19.Qc6 bc6–/+ 20.Na4 Re2 21.Bd4 Ba3 22.Rb7 h5 23.Rc7 Rc2 24.Nb6 Rd8–/+ 25.Bf6 gf6 26.Nc4 Rd3 27.Na3? Ra3–+ 28.Re1 Kg7 29.Ree7 Ra1 30.Kg2 Raa2 31.Rf7 Kg6 32.Kf3 Rf2 33.Ke3 Rh2 34.Rg7 Kf5 35.Rc6 Ra3 36.Kd4 Rd2 37.Kc4 Rc2 38.Kb5 Rc6 39.Kc6 Rb3 40.Kd5 a4 41.Kc4 Re3 42.Rg8 a3 43.Kd4 Re4 44.Kc3 Ra4 (45.Kb3 a2 46.g4 hg4 47.Rg4 Kg4 48.Ka4 a1Q 49.Kb4 Qd4 50.Kb5 f5–+) 0–1. Passakos,Georgios – Sturua,Zurab (2545), Katerini op, 1992.

5.a3 c6 6.Nf3 a5 =+.

5.a3 c6 6.Nf3 Nbd7 7.d3 Qc7 8.Nbd2 e5 9.0-0 Bd6 10.c4 0-0 11.c5 Be7 12.Qc2 h6 13.e3 Rfe8 14.d4 e4 15.Ne5 Ne5 16.de5 Nd7 17.Qc3 Bf8 18.f4 ef3 19.Nf3 Bf3 20.Bf3 Ne5 (< 20...Re5 21.Qd3 Re6 22.e4 de4 23.Be4=+) 21.Bh5 g6 22.Bg4 (22.Be2!?–/+) 22...Bg7–+ 23.Kg2? (better is 23.Kh1–+) 23...f5 24.Be2 Nc4 25.Qg7 Qg7 26.Bg7 Ne3 (26...Kg7?! 27.Bc4 dc4 28.Kf3–+) 27.Kf2 Nf1 28.Bh6 Nh2 29.Bg5 Ng4 30.Kf3 a5 31.b5 Ne5 32.Kf2 Nc4 33.bc6 bc6 34.a4 Rab8 35.Bf6 Kf7 36.Bd4 Re4 37.Bc3 Rbe8 38.Bf3 R4e7 39.Rh1 Ke6 40.g4 Kd7 41.gf5 gf5 42.Rh5 Rf8 43.Rh6 Re3 44.Rh7 Kc8 45.Bd4 Ra3 46.Rh6 Ra4 47.Rc6 Kd7 48.Bd5 Ra2 49.Kf3 Rd2 50.Bc4 Kc6 51.Be3 Rc2 52.Bb3 Rc3 53.Ba4 Kd5 54.Bd1 f4 55.c6 fe3 56.Ke2 Rf2 57.Ke1 Rc6 58.Bh5 Rc1 59.Bd1 Rd1! 60.Kd1 a4 61.Kc1 a3 (62.Kb1 e2 63.Ka2 e1Q 64.Ka3 Kc4 65.Ka4 Ra2#) 0–1. Wuersig,Mathias – Rausch,Erik, Berlin Lichtenberger op, 2007.

5.a3 Bd6 6.c4 c6 7.d3 Nbd7 8.Nf3 Qe7 (8...e5 9.h3 Bf5 10.g4=) 9.Nbd2= 0-0 10.Qb3 (10.h3 Bf3 11.Nf3 dc4 12.dc4 c5=) 10...a5 11.e4 (11.c5 Bc7=+) 11...e5 (11...de4 12.de4 Bf3 13.Nf3 Ne4 14.c5=+) 12.cd5 (12.c5 Bc7=+) 12...cd5–/+ 13.ba5 Nc5 14.Qc2 Rfc8 15.Qb1 Ra5 16.0-0 de4 17.Ne4 (17.de4 Rb5 18.Nc4 Nce4–+) 17...Nce4 (17...Nfe4!? 18.de4 Nb3–/+) 18.de4–/+ Rb5 19.Rc1 (19.h3 Be6–/+) 19...Rd8 (19...Rc1 20.Qc1 Ne4 21.Qc2–/+) 20.Nd2 Nh5 21.Rc2 Bc5 22.Bf1 Qf6 23.Nc4 Bd1 24.Qd1 Rd1 25.Rd1 h6 26.Be5 Qf3 27.Re1 Qb3 28.Rd2+/– Be7? 29.Ba1 Rc5 30.Rd7 Bf8 31.Ne5 Qa2?? 32.Rd5?? Rd5=+ 33.ed5 Qd5 34.Bc4+= Qd2 35.Bf7 Kh7 36.Bg6 Kg8 37.Nf3 Qd5 38.Nh4 Nf6 39.Nf5 Nd7?? 40.Bc3?? Nf6 41.Re5 Qb3 42.Re3?? Qa3 43.Kg2? Nd5–+ 44.Re8 Qc3 45.Nd6 Qc6 46.Bf7 Kh7 47.Ne4 Nf6 48.Re6 Qe4 49.Re4 Ne4 50.Bd5 Nd6 51.f4 Be7 52.Kf3 Bf6 53.Ba2 g6 54.Ke3 Kg7 55.g4 Kf8 56.h3 Ke7 57.Bb1 g5 58.Ba2 Kd7 59.fg5 hg5 60.Bd5 b5 61.Kf3 Kc7 62.h4 gh4 63.Kf4 Kb6 64.g5 Bg7 65.Kg4 Kc5 66.Be6 Nc4 67.Kh4 b4 68.Kh5 Ne5 69.Kh4 Kd4 70.Ba2 Kc3 71.Kg3 b3 72.Bb1 Kb2 73.Bh7 Ka2 74.Bg8 Ka3 75.Bh7 Ka2 76.Bg8 Kb2 77.Kf4?? Kc2 78.Bh7 Kc1 79.Kf5 b2 80.Ke6 b1Q 81.Bb1 Kb1 82.Kf5 Kc2 83.Ke4 Kc3 84.Kd5 Kd3 85.Kd6 Ke4 86.g6 Kf4 87.Ke7 Kg5 88.Ke6 Ng6 89.Kf7 Bc3 ½–½. Schmid,Peter (1990) – Maugg,Ludwig (2045), Traum op, 2004.

5.a3 Be7 6.c4 0-0 7.Nc3 Nc6 8.cd5 Nd5 (8...ed5 9.h3 Be6 10.Nf3=+) 9.Nf3 (9.b5 Nb8=) 9...Nc3 (9...Bf3 10.Bf3 Ne5 11.Bg2=+) 10.Bc3= Bf6 (10...a6 11.Qb3=) 11.0-0 Re8 (11...e5 12.h3 Be6 13.b5=) 12.Qc2 (12.h3 Bh5+=) 12...a6 (12...e5 13.Qe4 Qd7 14.b5=+) 13.e3 (13.Qe4 Bh5=) 13...e5 14.Rac1 e4 15.Nd4 (15.Bf6!? Qf6 16.Nh4=) 15...Nd4 16.Bd4 Bf3?? (better 16...Bd4!? 17.ed4 Qd4 18.Qc7 b5=+) 17.Bf6 (17.Bf3!? ef3 18.Bf6 Qf6 19.Qc7+/-) 17...Qf6+= 18.Qc7 Qb2? (18...Bg2 19.Kg2 Qf3 20.Kg1+=) 19.Qb7 (19.Bf3 ef3 20.Qb7 Qa3+-) 19...Rab8 (better 19...Bg2!? 20.Kg2 Qa3+/-) 20.Qa6+- h5? (20...Bg2 21.Kg2 Qd2 22.Rfd1+-) 21.Qc6 (21.Bf3 ef3 22.Rfd1 Ra8+-) 21...Qa3 (better 21...Bg2 22.Kg2 Qa3+-) 22.Bf3 ef3 23.Qf3 h4 24.Rc7 Qa2 (24...Rf8 25.d4+-) 25.gh4 (25.Qf4 Rbc8 26.Rc8 Rc8+-) 25...Rb4 26.Rfc1 Rh4 27.Rc8 Qe6 (27...Rc8 28.Rc8 Kh7 29.Qf5 g6 30.Qf6 Qb1 31.Kg2 Qb7 32.Kg3 Qc8 33.Kh4+- (33.Qf7?! Kh6 34.Kh4 g5 35.Kg3 Qg4 36.Kg4=)) 28.Re8 Qe8 29.Rc7 (better 29.Qf5!? g6 30.Rc8 gf5 31.Re8 Kg7+-) 29...Rh6 (29...Qe6 30.Kh1+-) 30.Kf1 (30.Qf5!? Rg6 31.Kf1 Rc6 32.Rc6 Qc6+-) 30...Qb5 31.Qe2 (better 31.Ke1 Qb1 32.Qd1+-) 31...Qb1= 32.Qe1 Qf5 33.Ke2 (33.Rc4 Rh2 34.Ke2 Qh5 35.Kd3 Qd5 36.Rd4 Qb3 37.Ke4 Qb7 38.Kf4 g5 39.Ke5 Qe7 40.Kd5 Qe6 41.Kc5 Qc8 42.Kd5 Rh6-+) 33...Rh2 (33...Qg4!? 34.f3 Rh2 35.Kd3 Qf3 36.Rc8 Kh7-/+) 34.Qg1 Qb5 35.d3 Qb2 36.Kf3 Rh6 (36...Qf6 37.Ke2 Qb2 38.Kf3 Qf6 39.Ke2 Qb2=) 37.Rc4 (37.Qe1 Qe5 38.Rc8 Kh7=) 37...Rf6 (37...Qf6 38.Ke2 Qb2 39.Kf3 Qf6 40.Ke2 Qb2 41.Kf3=) 38.Rf4 Qb7 (38...Qe5 39.Rf6 Qf6 40.Ke2 Qb2 41.Kf1 Qb1 42.Kg2 Qd3 43.Qc1=) 39.Ke2 (39.e4!? Ra6 40.Qd1+=) 39...Qb2 (39...Ra6 40.e4=) 40.Kf3 Qb7 41.e4 Rg6 42.Rg4 Rf6 43.Rf4 Rg6 44.Qa1 Qd7 (44...Rd6 45.Qc3+/-) 45.Qa8 Kh7 46.Ke3 Qh3 47.Rf3 Qd7 (47...Qh6 48.Ke2 Rc6 49.Qa4+/- (49.Rf7?? Rc2 50.Kf3 Qh3 51.Kf4 Rf2 52.Ke5 Rf7-+)) 48.Qd5 Qa7 (48...Qd5 49.ed5 Kg8 50.Kd4+/-) 49.Qd4 (better 49.Ke2 Qc7 50.Rh3 (50.Qf7?! Qc2 51.Ke3 Qc1 52.Ke2 Qc2 53.Ke3 Qc1 54.Ke2 Qc2=; 50.Rf7 Qc2 51.Kf3 Qd1 52.Kf4 Qd2 53.Ke5 Qb2 54.d4 Qb8 55.Kf5 Qh2=) 50...Rh6 51.Rh6 Kh6 52.Qc4+-) 49...Qa1?? (better 49...Qe7+/-) 50.Qa1+- Rf6 51.Rf6 gf6 52.Qf6 Kg8 53.d4 Kh7 54.d5 Kg8 55.d6 Kh7 56.d7 (56.d7 Kg8 57.d8Q Kh7 58.Qdh8) 1-0. dannysmet (2050) - XeC2020 (2190), Rated Blitz game, lichess.org, 2020.

5.a3 Be7 6.Nf3 0-0 7.0-0 a5 8.b5 c5 9.a4 Nbd7 10.d3 Bf3 11.Bf3 e5 (11...Qc7 12.Nd2=) 12.c4 Nb6 (12...dc4!? 13.Bb7 Rb8+=) 13.cd5 Nbd5 14.Be5 Rc8 (14...Qd7 15.Nc3+/-) 15.Nd2 b6 (15...Qd7 16.Nc4+/-) 16.Nc4+- Nb4 (16...Re8+-) 17.Bc3 (better 17.Bb7 Nd7 18.Bf4+-) 17...Nfd5+/- 18.Bd5 (better 18.Bb4 Nb4 19.Qb3+/-) 18...Qd5?? (better 18...Nd5 19.Rc1 Re8+=) 19.Bb4 (19.Nb6 Qe6 20.Nc8 Rc8+-) 19...cb4 20.Nb6 (20.Nb6 Qe6 21.Nc8 Rc8 22.Rb1+-) 1-0. dannysmet (2070) - anodino (2050), Rated Blitz game, lichess.org, 2020.

5.a3 Be7 6.Nf3 Nbd7 7.0-0 0-0 8.d3 a5 9.b5 c6 10.bc6 bc6 11.Nbd2 Rb8 12.Rb1 Qc7 13.h3 Bf3 (13...Bh5 14.c4=) 14.Bf3 (14.Nf3 Rb6 15.c4 Rfb8=) 14...Rb6 15.c4 Bc5 16.e3 Be3 17.Bf6 Nf6 18.fe3 Qg3 19.Bg2 Qe3 20.Rf2 Rb1 21.Qb1 Nh5 (21...Rd8 22.Qf1=) 22.Qd1 (22.Nf1 Qd4 23.Qe1=+) 22...Nf4=+ 23.Qf3 Ng2 (23...Qe1 24.Nf1 Ng2 25.Rg2=) 24.Kg2 Qc5 25.cd5 cd5 26.Nb1 Qc1 (26...f6 27.Qg4 e5 28.Nd2=) 27.Rf1 Qc2 28.Kh1 h6 29.Rg1 g6 30.Qg3 (30.Rf1 d4+=) 30...Rc8 31.Rf1 Rc7 32.Nd2 Rb7 33.Qe3 Qc3 (33...Rb2 34.Rf2=) 34.Qh6 (34.Nf3!? Qa3 35.Ne5= (< 35.Qh6 Qd3 36.Rf2 Qc3–/+)) 34...Qd3=+ 35.Rf3 Qd4 36.Qg5 Kg7 37.Rf4 Qb2 38.Rh4 Rc7 39.Nf1 (39.Qh6 Kg8 40.Qh7 Kf8 41.Qh6 Ke7=) 39...Qa1 (39...Rc4 40.Rc4 dc4 41.Qa5–/+) 40.Kg1 (40.Qh6 Kg8 41.Qh7 Kf8 42.Qh6 Ke8=) 40...Qc3 (40...Rc4 41.Rc4 dc4 42.Qa5 Qd4 43.Kg2 c3=) 41.Qh6 Kg8 42.Qg5 Rc8 43.a4 Rb8 ½–½. Trani,Francesco – Quirini,Luciano, Asigc EK1014, 1998.

5.a3 Be7 6.Nf3 Bf3 7.Bf3 0-0 8.0-0 c6 9.d3 Nbd7 10.Nd2. Hal1958 – JMD, playchess.de, 2004.

5.b5 c6 6.a4 Qb6 7.Nc3 Bb4 8.Nf3 Bc3 9.Bc3 cb5 10.Bd4 Qa5 11.c3 Nc6 12.ab5 Qb5 13.Rb1 Qa6 14.Ra1 Qc4 15.d3 Qb5 16.Rb1 ½–½. Hal1958 – ArieRoos, playchess.de, 2002.

5.c3 c5 6.h3 (6.bc5 Bc5 7.Qb3 Qe7=+) 6...Bf5 7.a3 (7.bc5 Bc5 8.Qb3 Nbd7=+) 7...Nc6 8.d3 Qb6 (8...Bd6 9.Nf3=+) 9.Nf3 e5 10.Nbd2 e4 (10...Bd6 11.c4 d4 12.g4=) 11.Nh4= Be6 12.de4 (12.c4 d4 13.b5 Ne7 14.de4 0-0-0+=) 12...Ne4 13.Ne4 de4 14.Be4 cb4 15.cb4 Bb4 16.Kf1 (16.ab4 Qb4) 16...Bf8 17.Qc2 Rc8 18.Rc1 (18.Kg2 Qa6=) 18...Nd8 19.Qb1 Rc1 20.Qc1 Qb5 21.Nf3 Bd7 22.Kg2 Ne6 23.Ne5 Ba3 24.Ba3 Qe5 25.Bb7 a5 26.Qd2 f6 27.Bd5 Nc7 28.Bf3 Ne6 29.Rb1 Bc8 30.Bd5 Qc7 31.Rc1 Qd8 32.Rc6 Kf7 33.Qd3 Bd7 34.Ra6 Qc7 35.Qe4 Re8 36.Qh7 Qc3 37.Ra7 Qc8 38.f4 f5 39.g4 (39...fg4 40.f5 gh3 41.Kh1+-) 1–0. Pleschke,Helmut – Hemzo,Miguel Angelo, Orang–Utan Invitational, 2001.

5.c4 Bb4 6.Qb3 Nc6 7.a3 =+.

5.h3 Bf5 =+.

6.b5 a6 7.c4 (7.ba6 Ra6 8.h3 Bf5=+) 7...ab5–/+ 8.cb5 (8.h3 Bf5 9.cd5 ed5 (< 9...Nd5 10.e4+/–) 10.Bf6 Qf6–/+ (< 10...gf6 11.Nc3=)) 8...Be7 (8...Bd6 9.h3 Bf5 10.Nf3–/+) 9.Nf3=+ Bf3 (9...0-0 10.Ne5–/+) 10.Bf3 Qd7 (10...0-0 11.Qc2=+) 11.a4 Qc7 12.e3 (12.0-0 0-0=+) 12...Nbd7 13.0-0 h5 (13...0-0 14.d3=+) 14.Nc3 h4 15.g4 h3 (15...Ne5 16.Be2=+) 16.Kh1 (16.g5 Qe5 17.gf6 Bd6=) 16...Bd6=+ 17.Ne2? (better is 17.g5!? Nh7 18.Be2 Ng5 19.f4–/+) 17...Bh2–+ 18.Ng3? (better is 18.g5 Ne4 19.Bg7–/+) 18...Bg3 19.fg3 Qg3 20.Rg1 Qh4 21.Qe1 Qg5 22.Qg3 Qg6 23.Qf4 Rh4 24.Qg3 Rh7 25.a5 Qd3 26.Bc3 Qb5 27.Qc7 Qc6 28.Qc6 bc6 29.Rgb1 Kd8 30.a6 Kc8 31.Kh2 Ne8 32.Be2 f6 33.a7 Nc7 34.Ba6–/+ Na6 35.Ra6 Kc7 36.Ba5 Kd6 37.Rb7 Rhh8 38.Bc7=+ Ke7 39.Rc6 c4?? 40.Bd6+- Ke8 41.Rcc7 Rd8 42.Rd7! Rd7 (42...Rc8 43.Re7 Kf8 44.Rec7 Ke8 45.Rc8#) 1–0. Olsen,Birger – Knutsen,Tom Greger, Vadsosjakken, 2006.

6.c3 c4 7.Nf3 Nc6 8.0-0 b5 (8...Bd6 9.d3 Bf3 10.Bf3=+) 9.a4= a6 10.ab5 (10.Na3 Qb8=+) 10...ab5=+ 11.d3 Ra1 12.Ba1 Be7 13.dc4 dc4 (13...Bf3 14.Bf3 bc4 15.Nd2=+) 14.Bb2 0-0 15.Bc1 (15.Qd8 Rd8 (worse 15...Nd8 16.Na3+/-) 16.Na3 Bf3 17.Bf3 Na7=) 15...Qc7 16.Na3 Qb6 17.Be3 Qa6 18.Nc2 Rd8 19.Qc1 Ne4 (19...Nd5 20.Qb2=+) 20.Ncd4 (20.Qb2 Bf5=) 20...Nd4 (20...Bf6 21.Rd1 Qa4 22.Re1 Nc3 23.Nc6-+) 21.Bd4 Bf6 (21...Bf5 22.Qe3=) 22.Bf6 (22.Ne5 Be5 23.Be5 Nd2=) 22...Nf6 (22...gf6 23.Nd4 Ng5 24.Qf4 Nh3 25.Bh3 Bh3 26.Qf6+=) 23.h3 Bf3 24.Bf3 Nd5 (24...Qd6 25.e3=) 25.Rd1 Qa2?? (25...Qc8 26.e4 Nb6 27.e5=) 26.Bd5 (better 26.e4+-) 26...Rd5= 27.Rd5 ed5 28.Kf1 Qb3 29.Qe3 Qb1 30.Kg2 Qe4 31.Qe4 de4 32.g4 g6 (better 32...Kf8!?=) 33.Kg3 g5 34.f3 (34.f4 h6 35.fg5 hg5 36.Kf2+-) 34...ef3?? (better 34...Kg7=) 35.Kf3+- (35.ef3?! Kg7=) 35...Kg7 (35...Kf8 36.Ke4 Ke7 37.Kd5+-) 36.Ke4 Kg6 37.Kd5 (better 37.Ke5 f5 38.gf5 Kf7+-) 37...f5 38.Kc5?? (better 38.gf5 Kf5 39.e4 Kf6 40.Kd6+-) 38...fg4 39.hg4 h5 40.gh5 Kh5 41.Kb5 g4 42.Kc4 g3 43.b5 g2 44.Kc5 (44.Kd5 g1Q 45.c4 Qg8 46.Kc5 Qg4-+) 44...g1Q 45.Kc6 Qg6 46.Kc5 Qf5 47.Kb4 Qe4 48.c4 Qe2 49.Kc5 Qe7 50.Kc6 Qe8 51.Kb6 Qe6 52.Kc5 Kg5 53.b6 Qc8 54.Kb5 Kf5 55.c5 Ke5 56.c6 Kd6 57.b7 Qb8 58.Kb6 Qc7 59.Ka7 (59.Kb5-+) 59...Qa5 (59...Kc6 60.Ka8 Qb7) 60.Kb8 Kc6 61.Kc8 Qc7 0-1. dannysmet (2025) - Kekser (2125), Rated Blitz game, lichess.org, 2020.

6.bc5 Bc5 7.Nf3 Qb6 8.Bf6 Bf2 (8...gf6?! 9.0-0=+) 9.Kf1 gf6 10.e3 d4 11.Kf2 Qb2 12.Qe2 (12.h3 Bh5 13.g4 de3 14.Ke3 Qa1 15.gh5 Rg8+=) 12...Nc6=+ 13.Nc3 dc3 14.d3 Qb6 15.h3 Bh5 16.g4 Bg6 17.Rhb1 Qc7 18.Qe1 Ne7 19.Nd4 Nd5 20.Bd5 ed5 21.Qh1 Rd8 22.Rb3 h5 23.Qg2 hg4 24.Qg4 a6 25.Qg3 Qd7 26.Kg2 Rc8 27.Rf1 Rh6 (27...Qe7 28.Rb6=+) 28.Rf4 (better is 28.Rf6 Qe7 29.Rfb6+/–) 28...Bd3=+ 29.cd3 c2 30.Nc2 Rc2 31.Rf2 Rc1 32.Qb8 Rc8 33.Qh2 Rg6 34.Kf1 (34.Kf3 Qf5 35.Ke2 Rc2 36.Kd1 Qf2 (36...Rf2 37.Qb8 Ke7 38.Rb7 Qd7 39.Rd7 Kd7 40.Qb7 Ke6 41.Ke1=) 37.Qf2 Rf2–+) 34...Rc1 35.Ke2 Rgg1 36.d4 Qc8 37.Rb2 (37.Qg1 Rg1 38.Rb2–+) 37...Rce1 38.Kf3 Qf5 39.Qf4 Qh3 0–1. hal1958 – Hovsep, HCL–A1256 playchess.de, 2003.

6.h3 Bf5 7.g4 =+.

6.h3 Bh5 7.c4 cb4 8.ab4 Bb4 9.cd5 ed5 10.Nc3 –/+.

6.d4 Bd6 (6...a5!?–/+) 7.c4 c6 (7...dc4 8.Bb7 Rb8 9.Bc6=+) 8.c5 (8.Nd2 0-0=) 8...Bc7=+ 9.Nf3 0-0 10.Nbd2 a5 (10...Qe7 11.0-0=) 11.0-0 ab4 12.ab4 Qe7 13.Qb3 e5 (13...Ne4 14.Qe3 Nd2 15.Nd2=) 14.de5 Ne5 15.Nd4 Ned7 (15...h6 16.e4+=) 16.Rae1+= Rfe8 17.e4 de4 18.Ne4 Qf8 (18...Ne4 19.Re4 Qg5+=) 19.h3 (19.f4!?+=) 19...Ne4= 20.Re4 (< 20.hg4 Nd2 21.Qc2 Nf1 22.Rf1 Be5–/+) 20...Re4 21.Be4 Bh3 22.Rd1 Nf6 (22...Be5 23.Bf5 Bf5 24.Nf5=) 23.Bb1 (23.Bf5 Bg4 24.Bg4 Ng4=) 23...Rd8 (23...Bg4 24.Nf3–/+) 24.Nf3 (24.Nf5 Bf5 25.Bf5 Qe7=+) 24...Be6–/+ 25.Qc2 Rd1 26.Qd1 Qd8 27.Qc2 h6 28.Nd4 Bd5 29.Qf5 Qe8–+ 30.Bc3 Ne4 31.Be4–/+ Qe4 32.Qe4 Be4 33.f3 Bd3 34.Kf2 g6 35.Ke3 Bb1 36.f4 Ba2 37.b5 cb5 38.Nb5 Bd8 39.Ke4 Be7 40.Nd6= b6 41.cb6 Bd6 42.Be5 Bc5 43.b7 f5 44.Kd3 Ba7 45.b8Q Bb8 46.Bb8 ½–½. Tressents Pla,Luis (2215) – Castany Pampalona,Andreu (2015), Mollerussa op–A, 1997.

6.Nf3 c5 7.b5 A) 7...Bd6 8.0-0 (8.Nc3 d4 9.Nb1 Qb6 10.a4 Bf3 11.Bf3 Ne5 12.Bg2 Nc4+=) 8...Qa5 9.a4 0-0 10.h3 Bf3 11.Bf3 Be5 12.Bc3 Bc3+=; B) 7...a6 8.ba6 (8.a4 ab5 9.ab5 Ra1 10.Ba1 Qa5 11.Bf6 Nf6 12.Ne5 Qb5–/+) 8...Ra6 9.Nc3 d4 10.Nb5 e5 11.0-0 Be7 12.c4 0-0+=; C) 7...Qb6 8.c4 (8.a4 a6 9.Na3 Bd6 10.0-0 Bf3 11.Bf3 0-0 12.d4 cd4+=) 8...Bd6 9.a4 Bf3 10.Bf3 dc4 11.Na3 c3 12.Bc3 Qc7+=; D) 7...Qa5 8.a4 (8.c4 dc4 9.Nc3 a6 10.ba6 Ra6 11.0-0 b5 12.a4 b4–/+) 8...Bd6 9.Bc3 Qb6 10.0-0 0-0 11.h3 Bf5 12.d3 e5+=.

6.Nf3 c5 7.c3 A) 7...Be7 8.d3 (8.0-0 0-0 9.d3 Qc7 10.Nbd2 b5 11.h3 Bf3 12.Nf3 a5+=) 8...0-0 9.Nbd2 cb4 10.ab4 e5 11.0-0 Re8 12.Qb3 Qb6+=; B) 7...Bd6 8.d3 (8.0-0 0-0 9.d3 cb4 10.ab4 e5 11.h3 Bf5 12.Na3 Qb6+=) 8...0-0 9.0-0 Bf3 10.Bf3 Ne5 11.Bg2 c4 12.d4 Nc6+=; C) 7...a5 8.bc5 (8.b5 a4 9.0-0 Bf3 10.Bf3 Ne5 11.Bg2 Qd7 12.c4 Nc4–/+) 8...Bc5 9.Qb3 Ra6 10.0-0 0-0 11.d3 Bf3 12.Bf3 Rb6+=.

6.Nf3 c5 7.Bc3 A) 7...d4 8.Bb2 e5 9.h3 Bf3 10.Bf3 cb4 11.Bb7 Rb8 12.Bg2 ba3+=; B) 7...Bd6 8.bc5 (8.0-0 0-0 9.bc5 Nc5 10.Bd4 Bf3 11.Bf3 Rc8 12.Bg2 e5+=) 8...Bc5 9.0-0 0-0 10.d4 Be7 11.Bb4 Rc8 12.Nbd2 Bf5+=; C) 7...Ne4 8.b5 (8.Bb2 Qb6 9.d3 Bf3 10.ef3 Nef6 11.Bf6 Nf6 12.c3 d4–/+) 8...Nd6 9.a4 Bf3 10.Bf3 a6 11.ba6 Ra6 12.d3 d4+=; D) 7...Qb6 8.Bf6 Nf6 9.c3 Qa6 10.bc5 Bc5 11.Ne5 Bf5 12.d4 Bd6–/+.

6.Nf3 c5 7.bc5 Bc5 8.0-0 (8.d4 Be7 9.0-0 Rc8 10.Bc3 Qc7 11.Nfd2 Nb6 12.f3 Bh5+=) 8...0-0 (8...Rc8 9.Nc3 0-0 10.Rb1 Qe7 11.h3 Bf3 12.Bf3 Ne5+=) 9.d3 (9.h3 Bf3 10.Bf3 Nb6 11.d3 Na4 12.Ra2 Rc8+=) 9...Rc8 (9...Qb6 10.Ra2 Rac8 11.Nbd2 Qd6 12.c4 e5+=) 10.Nbd2 Qc7 (10...b5 11.Rb1 Bf3 12.Bf3 d4+=) 11.c4 Be7 (11...Bf3 12.Bf3 dc4+=) 12.Rc1 Qb6 13.Bd4 Bc5 14.Bc5 Rc5 15.Rb1 Qa6 16.Nd4 Ra5 (16...e5 17.N4b3 Rcc8 18.cd5=) 17.h3 Bh5 18.cd5 Nd5 19.N2b3 (19.Nc4!? Rc5 20.g4=) 19...Ra3+= 20.Bd5 ed5 21.Qc1 Re8 22.g4 Bg6 23.Nb5 Rb3 24.Rb3 Re2 25.Qc8 Nf8 26.Nc7 Qa2 (26...Qd6!?=) 27.Rb7+= (worse is 27.Qb7 Re7 28.Rc3 Qa5=) 27...Bd3 28.Rb8 Qa3 29.Nd5 a5 (better is 29...Ba6 30.Qd8 Qc5+-) 30.Nb4! Qb4 (30...ab4 31.Qf8 mate) 31.Rb4 ab4 32.Rd1 Rc2 (32...b3 33.Rd3 b2 34.Rd1+-) 33.Qb8 Rc3 (33...Ba6 34.Rd8 Rc8 35.Rc8 Bc8 36.Qc8+-) 34.Qb4 Rc4 35.Qa3 1–0. forsetinn (2075) – tekoah (1895), gameknot.com, 2013.

6.Qb3 Na6 7.a3 Bd6 =.

6.Qb3 Nbd7 (--> 5.c4 Nbd7 6.Qb3 c6).

6.c5 a5 7.a3 ab4 8.ab4 Ra1 9.Ba1 Nbd7 (9...b6 10.Bf6 Qf6 11.cb6 Bb4 12.Qb3–/+) 10.Nf3 (10.h3 Bf5=+) 10...Be7 11.0-0 (11.Nd4 0-0=+) 11...0-0 12.d3 (12.Nd4 e5 13.f3 Bh5=+) 12...b6 13.d4 Qa8 (13...Qc7 14.Nbd2=+) 14.Nc3 Rb8 15.Qd2 Qa3 16.Qa2 (16.b5 cb5 17.c6 b4 18.Nd5 ed5 19.cd7 Qa4=+) 16...Qb4 (16...Qa2 17.Na2 Ra8 18.Nc3–/+) 17.Rb1=+ Qa5 (17...Qc4 18.Qc4 dc4 19.cb6 Bf5–/+ (< 19...Nb6 20.Ne5 Nbd7 21.Nc6 Rb1 22.Nb1+=)) 18.Qa5 (18.Rb6!? Ra8 19.Rb2=+) 18...ba5–/+ 19.Rb8 Nb8 20.Ne5 Bf5 21.e3 Ne8 22.Bf1 Nc7–/+ 23.Bb2 f6 24.Nf3 Nba6 25.Nd2–/+ Bc2 26.Ndb1 e5 27.Na3 Nb4 28.Be2 Ne6 29.Nc2 Nc2 30.Bd1 ed4 31.Bc2–/+ dc3 32.Bc3 Nc5 33.Ba5 Kf7 34.Kf1 g6 35.Ke2 Ke6 36.f3 Nb7 37.Bc3 Nd6 38.Ba4 c5 ½–½. Baron,Michael – Verdier,Patrice, corr FRA AJEC72, 1987.

6.c5 b6 7.d4 =+.

7.a3 a5 8.cd5 ed5 9.Nf3 (9.ba5 Nc5 10.Qe3 Be6+=) 9...ab4–/+ 10.ab4 Ra1 11.Ba1 Qb6 12.Qa4 (12.b5 Bc5 13.d4 Be7+=) 12...Be7 (12...Qb4 13.Qa8 Ke7 14.0-0+=) 13.0-0 (13.b5 0-0 14.Nc3 cb5 15.Qb5 Ra8 16.Qb6 Nb6+=) 13...0-0 (13...Qb4 14.Qa8 Bd8 15.Bf6 Nf6 16.Nc3–/+) 14.b5 cb5 (14...cb5 15.Qb3 Rc8+=; 14...Nc5 15.Qa3 Qb5 16.d4 Bf3 17.Bf3–/+). Miralles,Gilles – Abranavel, 1983.

7.a3 Be7 8.d3 0-0 9.Nf3 a5 10.Nbd2 ab4 11.ab4 Qb6 12.c5 Ra1 13.Ba1 Qc7 14.0-0 b6 15.cb6 Qb6 16.Rb1 Rb8 17.Bc3 h6 (17...Bf3 18.Bf3 Qb5 19.Qc2+=) 18.h3 (18.Qc2 Bd6=) 18...Bh5 (18...Bf3 19.Bf3 e5 20.e3+=) 19.Qa4 (19.Qc2 Bf3 20.Nf3 Bd6=) 19...Rc8 (19...Bf3 20.Nf3 Nc5 21.Qa1+=) 20.Qa2 (20.Ra1 Kh7=) 20...Bg6 (20...Bd6 21.Qa5=) 21.Nb3 (21.Qb2 Ra8=) 21...Bb4 (21...Bd6 22.Qa5=) 22.Nbd4 c5 23.Nc2 Qc7 (worse is 23...Bc3 24.Rb6 Nb6 25.Qb3+/–) 24.Nb4 cb4 25.Bb4 Ne5 (25...e5 26.Nh4 Qc2 27.Qc2 Rc2 28.Ng6 fg6 29.e4 de4 30.de4+=) 26.Ba5 (26.Ne5 Qe5 27.Qd2 Bf5=) 26...Nf3 27.Bf3 Qc5 (27...Qe5 28.Qb2 Qb2 29.Rb2=) 28.Bb6 (28.Bb4 Qc6=) 28...Qc3 (28...Qd6 29.Bg2=) 29.Be3 d4? (better is 29...Qe5!?=) 30.Rc1+/– (30.Rc1 Qc1 31.Bc1 Rc1 32.Kg2+-) 1–0. Miralles,Gilles – Lecuyer, 1983.

7.a3 Be7 8.d3 0-0 9.Nf3 Rb8 10.0-0 Qc7 11.Nbd2 Rfc8 12.h3 Bh5 13.g4 Bg6 14.Nh4?? Re8?? (14...Ng4!! 15.hg4 Bh4) 15.Ng6 hg6 16.Nf3 ½–½. Trokenheim – Hoegberg, corr SSKK 1–431 1990.

7.a3 Be7 8.d3 dc4 9.Qc4 0-0 10.h3 +=.

7.d3 Bd6 8.f3 Bh5 9.g4 Bg6 10.h4 Bg3 11.Kf1 h6 12.Rh3 Bd6 13.h5 Bh7 14.g5? (better is 14.e3!?–/+) 14...hg5–+ 15.h6 g6 (better is 15...gh6!? 16.Rh6 dc4 17.dc4 Bf8–+) 16.e3 e5 17.Nd2 Qe7 18.f4? (better is 18.c5!? Bc7 19.Ke1–/+) 18...g4–+ 19.Rg3 Qe6 20.cd5 cd5 21.Re1 Nh5 (21...ef4 22.ef4 Bf4 23.Re6 fe6 24.Ne4 Bg3 25.Ng3+- (25.Nf6?! Nf6 26.Bf6 0-0 27.Bd5 Rf6 28.Kg2 Bf4 29.Be6 Kh8=)) 22.Kf2 Ng3 23.Kg3 (23.Bd5 Qe7 24.Kg3 Bg8 25.Bb7 Rb8–+) 23...0-0 (better is 23...Nb6!? 24.Kf2–+) 24.Bd5 Qf5 25.Ne4 ef4 26.Kg2 f3 27.Kf1 Ne5 (27...Bb4 28.Rd1 Rad8 29.Bg7–+) 28.Be5? (28.Nd6 Qd3 29.Qd3 Nd3 30.Rb1 Nb2 31.Rb2+=) 28...Qe5?? (better is 28...Be5 29.Rd1 Rad8–+) 29.Nf2?? (better is 29.Nd6 Rfd8 30.Bb7 (< 30.Bf7 Kf8 31.Nc4 Qg3–+) 30...Qd6 31.Qc3=) 29...Qg3–+ 30.Bf3 gf3 0–1. Zecha,Gerhard – Maugg,Ludwig (2130), Bayern–chI Bank Hofmann 3rd, 1999.

7.Nf3 dc4 8.Qc4 Nb6 9.Qb3 +=.

7.Nf3 Bd6 8.c5 Bc7 (8...Be7 9.Ne5 Ne5 10.Be5=+) 9.d4 Bf3 (9...0-0 10.0-0=) 10.Bf3 (10.Qf3 a5=) 10...a6 (10...e5 11.0-0=) 11.Nd2 (11.0-0 Qe7=) 11...h5 (11...0-0 12.0-0=) 12.Bg2 (12.h4 e5=) 12...h4 13.0-0-0 (13.a4 e5=) 13...b5 (13...b6 14.cb6 Bb6 15.e4–/+) 14.e4 de4 15.Ne4 Nd5 16.f4 (16.Nc3 a5 17.Nd5 ed5 18.ba5 Qg5 19.Kb1 h3=+) 16...g6 (16...a5 17.ba5 Ra5 18.Nc3–/+) 17.Nf2 (17.Nc3 a5=+) 17...a5 18.a3 (18.Bd5 cd5 19.ba5 Ra5=+) 18...ab4–/+ 19.ab4 N7f6 20.Nd3 ½–½. Kukel,Imre Jr (2285) – Lotharides,Vojtech (1790), SVK–chT2B, 2008.

7.Nf3 Bf3 8.Bf3= a5 (8...dc4 9.Qc4 Qb6 10.a3=) 9.cd5 a4 (9...Nd5 10.ba5 Ra5 11.Nc3= (worse is 11.Qb7 Rb5 12.Qc6 Qb8–/+)) 10.Qc2 cd5 (worse is 10...Bb4 11.dc6 bc6 12.a3+-; 10...ed5?! 11.a3=; worse is 10...Nd5 11.a3+=) 11.a3 Nb6 (11...Bd6 12.Nc3=) 12.0-0 (12.Bd4 Bd6=) 12...Rc8 (12...Bd6 13.Bd4=) 13.Qd1 Bd6 14.Bd4 0-0 15.Nc3 Nc4 16.Na4 b5 (16...Be5 17.Be5 Ne5 18.Bg2+=) 17.Nc5 e5 18.Nb7 Qe7 19.Nd6 Nd6 20.Bc5 Rfd8 21.Qb3 Qc7 (21...Qe6 22.d3+=) 22.d3+/– (worse is 22.Bd5 Nd5 23.Qd5 Nc4+=) 22...Nf5 23.Rfc1 (23.a4 ba4 24.Ra4 Rb8+/–) 23...Nd4 (23...Qd7!?+/–) 24.Bd4 Qc1 25.Rc1 Rc1 26.Kg2 ed4 27.a4 Rc3 28.Qd1 ba4 29.Qa4 Rcc8 30.Qa7+- Rb8 31.Qd4 Rd7 32.g4 h6 33.h4 Rdb7 34.g5 hg5 35.hg5 Rb4 36.Qe5 Nh7 37.Bd5 Rf8 38.f4 Rb6 39.Qc7 Rg6 40.Kf2 Ra6 41.Bc4 Rg6 42.e3 Kh8 43.Bf7 Ra6 44.g6 Nf6 45.Qb7 Ra5 46.e4 (46.e4 Ng4 47.Ke2+-) 1–0. Poley,Vladimir (2325) – Moussard,Jules (2235), Saint–Lo FRA Closed IM, 2007.

4.d4 e5 5.a3 (5.de5 Bb4 6.c3 Ba5=) 5...ed4 (5...e4 6.c4=+) 6.Bd4 (6.Qd4 Nf6=) 6...a5=+ 7.c3 (7.ba5 Nc6=+) 7...Nc6–/+ 8.e3 (8.ba5 Nd4 9.cd4 Ra5=+) 8...ab4 9.cb4 Nd4 10.Qd4 Qf6 11.Qf6 Nf6 (11...gf6?! 12.b5=) 12.b5 Bb4! 13.Kd1 (13.ab4 Ra1) 13...Ne4 14.Ra2 0-0 (14...Ke7 15.Bd3–+) 15.Bd3 (15.Rh2 Ra5–+) 15...Ra4 (better is 15...Ra3 16.Na3 Nc3 17.Kc1 Na2 18.Kb2 Nc3–+) 16.Ne2?? (better is 16.Rc2 Bd6 17.b6–/+) 16...Nf2–+ 17.Kc2 Nh1 18.Kb3 (18.Nec3 Bc3 19.Nc3 Ra5–+) 18...Rfa8 (19.Nec3 Bc3 20.Nc3 R4a5–+) 0–1. Netto (1630) – Kelish (1955), internet, 2006.

4.e3 e6 5.Nf3 Nf6 6.b5 c6 7.c4 (7.a4 a6 8.Be2 Bd6 9.ba6 Na6 10.Be5 Be5 11.Ne5 Nc5=) 7...dc4 (7...Bd6 (A) 8.Qb3 0-0 (8...dc4 9.Bc4 cb5 10.Bb5 0-0 11.0-0 Nc6=) 9.Ba3 c5 10.d4 Ne4 11.Bd3 Qa5=+; (B) 8.Nc3 0-0 9.cd5 Nd5 10.Nd5 ed5 11.Rc1 c5=; (C) 8.Ba3 Ba3 (8...Bc7 9.cd5 Nd5 10.e4 Nb6 11.Nc3 a6=) 9.Na3 a6 10.ba6 Na6 11.Nc2 dc4=; 7...Be7 8.Nc3 (8.cd5 ed5 9.Nc3 0-0 10.Be2 a6 11.bc6 Nc6=) 8...dc4 (8...0-0 9.cd5 Nd5 10.Nd5 ed5 11.bc6 Nc6=) 9.Bc4 cb5 10.Nb5 a6 11.Nbd4 0-0=) 8.bc6 Nc6 9.Bc4 Be7 (9...Rc8 10.Nc3 a6 11.0-0 Bd6=+) 10.d4 (10.0-0 0-0 11.d3 Rc8=) 10...0-0 (10...Rc8 11.0-0 0-0=) 11.Nbd2 (11.0-0 a6=) 11...Rc8 (11...Nb4=) 12.0-0 a6 13.a4 Qc7 14.Qe2 Bb4 15.Rfc1 Rfd8 16.Bb3 Na5?? (better is 16...Qa5=) 17.Rc7+- (17...Rc7 18.Bd1+-) 1–0. Buss,Michael – Granahan,Lee, 95NS18 Indianapolis, 1995.

4.Nf3 e6 5.e3 Nf6 (5...Bb4?? 6.Bg7 Nf6 7.Bh8+-) 6.a3 Be7 7.Be2 Nc6 8.Nc3 0-0 9.0-0 Re8 10.b5 Nb8 11.Ne5 a6 12.a4 ab5 13.ab5 (13.ab5 Ra1 14.Qa1=). KarlKoch – Peetoom,Frank F (2285), playchess.de, 2001.

5.a3 e6 (--> 1.b4 d5 2.Bb2 Bg4 3.a3 Nf6 4.h3 Bd7 5.e3 e6).

5.c4 e6 6.a3 c5 7.b5 a6=+ 8.a4 ab5 (8...Be7 9.Nf3=+) 9.ab5= Ra1 10.Ba1 Bc8 11.Bd3 Nbd7 12.Nf3 Bd6 13.0-0 Qe7 14.Nc3 0-0 15.Qc2 Re8 16.Re1 e5 (16...Nb6 17.cd5 ed5 18.Bb2=) 17.e4 (17.Nd5!? Nd5 18.Bh7 (worse 18.cd5 e4-/+) 18...Kh8 19.cd5=) 17...d4=+ 18.Ne2 Nf8 (18...Nb6 19.Bb2=+) 19.Ng3 (19.Bb2 Nh5=+) 19...g6 (19...Bd7!?=+) 20.Bb2= Ne6 21.Ra1 b6 22.Be2 Bb7 23.d3 Ra8 24.Ra8 Ba8 25.Qd2 Bb7 26.Ng5 Nf4 27.Bd1 Ne8 28.h4 (28.Nf3 Qf6=) 28...f5 29.f3? (better 29.Nf3!?=+) 29...h6-+ 30.Nh3 Nh3 31.gh3 f4 32.Nh1 Qh4 33.Qg2 Kg7 34.Nf2 Nf6 35.Ng4 Nh7 36.Be2 (better 36.Nf2-+) 36...Qe1 37.Qf1 Qg3 38.Qg2 Ng5 39.Qg3 fg3 40.Kg2 h5 41.h4 Ne6 (41...hg4 42.hg5 gf3 43.Bf3=) 42.Kg3 Nf4 43.Bf1 hg4 44.fg4 Be7 45.Bc1 Bc8 46.g5 Bd6 47.Bd2 Kf7 48.Kf3 Be6 49.Bf4 ef4 50.Bg2 Ke7 51.Bh1 Bc7 52.Bg2 Be5 53.Kf2 Bb8 54.Kf3 Bc7 55.Bf1 Bd7 56.Kf2 Kd6 57.Bg2 Ke5 58.Bf3 Bd8 59.Kg2 Bc8 60.Kf2 Be6 61.Kg2 Be7 62.Kf2 Bd7 ½-½. space_thief (2045) - marekt (2195), gameknot.com, 2016.

5.c4 e6 6.a3 c5 7.bc5 Bc5 8.d4 Be7 9.Nf3 Qb6 10.Qc2 0-0 11.Nbd2 Rc8 12.Be2 Bb5 13.0-0 Nbd7 14.a4 Bc4 15.Nc4 dc4 16.Nd2 c3 17.Bc3 Rc6 18.Nc4 Qc7 19.Qb3 Rc8 20.Rfc1 Rc4 21.Bc4 Qc4 22.Qb7 Qc7 23.Qc7 Rc7 24.Ba5 Rc1 25.Rc1 Bf8 (25...Nb6 26.Bb6 ab6 27.Rc6+/-) 26.Bd8 Nd5 27.a5 e5 28.e4 (28.Rc6 ed4 29.ed4 Bb4+=) 28...N5f6= 29.Rc7 ed4 30.Ra7 d3 31.Kf1 h6 (31...Nc5 32.Bf6 gf6 33.a6+-) 32.Bf6 (32.a6!? d2 33.Ke2+-) 32...Nf6+= 33.Ra8 Ne4 34.a6 d2 35.Ke2 Nc3 36.Kd2 Nb5 37.a7 Na7 38.Ra7 Bc5 39.Ra8 Kh7 40.Ke2 Kg6 41.Ra6 f6 42.g4 Bb4 43.Rb6 Be7 44.f4 Kf7 45.f5 Bc5 46.Rb7 Kf8 47.Kf3 Be7 48.Ke4 Bd6 49.Kd5 Bf4 50.Ke6 Kg8 51.Ra7 h5 52.Ra8 Kh7 53.Kf7 h4 54.Rg8 Bh6 55.Kf8 g6 56.Kf7 gf5 57.gf5 Bd2 58.Rg7 Kh6 59.Rg6 Kh7 60.Kf6 (worse 60.Rf6 Bc3+-) 60...Be3 61.Rg4 Bf2 62.Ke6 Bc5 63.f6 Ba3 White now must not overlook the idea Kf5 64.f7 (64.Kf5 Bc1 65.Rc4 Bb2 66.Rh4 Kg8 67.Kg6 Bc3 68.Rc4 Bb4 69.Rb4 Kf8 70.Rb8) 64...Kh6 65.Rh4 Kg7 (65...Kg6 66.Ra4 Bf8 67.Rg4 Kh5 68.Kf6+-) 66.Rg4 (better 66.Ra4 Bf8 67.Rg4 Kh6+-) 66...Kh6 67.Rg8 (67.Ra4 Bf8 68.Rh4 Kg6 69.Rg4 Kh5+-) 67...Kh5 (67...Bb4 68.h4 Bc5 69.Kf6 Bd4 70.Ke7 Bc5 71.Ke8+-) 68.f8Q (better 68.Kf6 Kh4 69.Re8 Bc5+-) 68...Bf8 69.Rf8 Kh4 70.Rg8 Kh3 71.Kf5 Kh4 72.Rg7 Kh3 73.Kf4 Kh2 74.Kf3 Kh1 75.Kf2 Kh2 76.Rh7 1-0. yulio (2015) - wojwys (2130), gameknot.com, 2021.

5.c4 e6 6.b5 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 10.Nf3 dc4 11.bc6 Bc6 12.Bc4 Bd6 13.Nc3 Qa5 14.Be2 0-0 15.0-0 Na6 16.Nd4 Nb4 17.Nc6 bc6 18.Qb1 Ra8 19.Ne4 Ne4 20.Qe4 Nd5 21.Qc2 Qa4 22.Qb2 Bf8 23.Rc1 Qa2 24.Bc4 Qb2 25.Bb2 Bb4 26.Rc2 Bd6 27.Kf1 h6 28.Ke2 Nb6 29.Bd3 c5 30.f4 Nd5 (30...Ra2 31.Bc3 Rc2 32.Bc2=) 31.Rc1 g5 32.f5 (32.g3 gf4 33.gf4 Kf8+=) 32...ef5 (32...Ra2 33.Ba1=) 33.Bf5+= Ra2 34.Ba1 c4 35.Be4 c3 (35...Nc7 36.Bf6 Ne8 37.Bd4+/-) 36.Bc3+/- (36.Bd5?! Rd2 37.Kf3 Rd5 38.Bc3 Rf5 39.Ke4 Rc5=) 36...Nc3 37.Rc3 Kg7 38.Rb3 Be5 39.Rb7 Rb2 40.Rd7 Bc3 41.g4 Bb4 42.Kd1 Kg8 43.Bc2 Kf8 44.Ra7 Kg7 (44...Bc5!? 45.Ra8 Kg7+-) 45.Kc1 Bc5 46.Rf7!! Kf7 47.Kb2 Kf6 48.Kc3 1-0. forsetinn (2470) - marekt (2230), gameknot.com, 2016.

5.d4 e6=+ 6.b5 (6.a3 Bd6=+) 6...a6 (6...c6 7.a4=+) 7.ba6 Na6 8.Ba6 (8.Nf3 Bd6=+) 8...Ra6–/+ 9.Nf3 Rb6 (9...Bb4 10.Nbd2–/+) 10.Bc1 (10.Qc1 Qa8=+) 10...Ne4–/+ 11.0-0 Bb5 12.Re1 Bb4 (12...Qa8 13.Bd2–/+) 13.Bd2=+ Nd2 (13...Bd6 14.Nc3=+) 14.Nbd2 0-0 15.Rb1 Qd6 (15...Qe7 16.e4 Bc6 17.Re2=+) 16.Ne5 (16.Rb2 Ba3 17.Rb3 Ba4 18.Rb6 Qb6=+) 16...Ba4 17.Nd3 Bc3 18.Re2 Ra8 19.Nf3 Bb5 20.Nfe5? f6 21.Nf3 Ra2 22.Nd2? Bd3 23.cd3 Rd2 24.Rd2 Rb1 25.Qb1 Bd2 26.Qb7 Kf7 27.e4 Ba5 28.Qb5 Bb6 29.ed5 Qd5 30.Qb2 Qd4 31.Qe2 Qa1 32.Kh2 Qe5 33.Qe5 fe5 34.Kg3 Ke7 35.Kf3 Kd6 36.Ke2 Kd5 37.f3 Bg1 38.g4 Kd4 39.h4 Be3 40.g5 c5 (41.h5 g6–+) 0–1. makaveli1982 – eppacher (1805), internet, 2007.

5.Nf3 e5 6.Ne5 Bb4 7.Bd3 Nc6 (7...0-0!?=) 8.Nd7+= Qd7 9.Bf6 gf6 10.Qh5 Ne5 11.Bf5 Qe7 12.c3 (worse 12.Bh7 Ng6=+) 12...Bd6 13.d4 (worse 13.Bh7 f5=+) 13...Nc4 14.Nd2 Nd2 15.Kd2 c6 16.Rhe1 (16.Bh7 Qf8 17.Qf5 Qg7=+) 16...Kd8 17.Rab1 (17.Bh7 Qf8-/+) 17...Kc7 (17...h6!?+/-) 18.e4+- (18.Bh7 Rag8 19.e4 A) 19...Rg2? 20.Qf3+- (worse 20.ed5 Rf2 21.Kd1 Qf8 22.dc6 b6+=); B) 19...Rg5=) 18...Bf4 19.Kc2 1-0. rcm06 (2265) - phildo (1965), gameknot.com, 2016.

5.Nf3 e6 6.a3 c5 7.b5 a6 8.a4 Bd6 9.c4 ab5 10.ab5 Ra1 11.Ba1 0-0 12.Be2 Re8 13.Qc2 e5 14.d3 dc4 15.dc4 e4 16.Nfd2 Bf5 17.Nc3 Can e4 get defended? 17...Bg6 18.Qb2 (18.0-0 Nbd7=) 18...h6 19.0-0 Nbd7 20.Rd1 Nb6 21.Nf1 Qc7 22.Qd2 Be5 23.Qc2 Ra8 24.Bb2 h5 25.Ra1 Ra1 26.Ba1 h4 27.Nd2 Qe7 28.Bb2 Bc7 29.Na4 Nbd7 30.Qb3 Qd6 31.Nf1 b6 32.Qd1 Qe6 33.Qa1 Bf5 34.Nc3 Ne5 35.Qa7 Qe7 36.g4 (36.Nd5 Nd5 37.Qa8 Kh7 38.Qd5 Bg6+=) 36...Be6 (36...Bg6!?+=) 37.Qa8= Qe8 38.Qb7 Qb8 39.Qb8 ½–½. bishop_ben (2140) – condoru (2090), gameknot.com, 2014.

5.Nf3 e6 6.a3 c5 7.bc5 Bc5 8.c4 0-0 9.Be2 dc4=+ 10.0-0 Nc6 (10...b5 11.d3=+) 11.Bc4= Na5 12.Bd3 Rc8 13.Nc3 Bd6 14.Qb1 Nc4 15.Nb5 Bb5 16.Bf6 Qf6 17.Qb5 Ne5 18.Be2 Nf3 19.Bf3 b6 20.d4 e5 21.Rad1 Rc7 22.a4 g6 23.Rd2 Rfc8 24.de5 Be5 25.Rfd1 Rc5 26.Qd7 R8c7 27.Qe8 Kg7 28.Rd8 Kh6 29.R1d3 Rc3 30.R3d5 R3c5 31.Rd3 Qe7 32.Qg8 Rc3 33.g4 Rd3 34.Rd3 Bf6 35.Rd5 Bh4 36.Kf1 Rc2 37.Be2 f6 38.Rd4 Rc3 39.Qb8 Rc1 40.Bd1 Kg7 41.Kg2 (41.Ke2 Rc7=) 41...Rc3 (41...f5 42.gf5 gf5 43.Rd2=) 42.Rd2 Rc7 43.Bb3 Qe4 44.Kf1 Rc1 45.Ke2 Re1 1-0. gorgo_medusa (2020) - marekt (2225), gameknot.com, 2016.

5.Nf3 e6 6.b5 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 10.c4 dc4 11.bc6 Bc6 12.Bc4 Bd6 13.Nc3 Qa5 14.Be2 0-0 15.0-0 Na6 16.Nd4 Bd7 17.Qb1 Nc5 18.Nf3 Ra8 (18...Rb8 19.Nb5 Bb5 20.Bb5=) 19.d4+= Na4 20.Na4 Qa4 21.Qb7 Bc6 22.Qb1 Rb8 23.Qd1 Qa8 24.Bd3 Ne4 25.Qc2 Bd5 26.Rc1 f6 27.Nh2 Ba3 28.Rb1 Rc8 29.Qe2 Bd6 30.Nf1 f5 31.f3 Nc3 32.Bc3 Rc3 33.e4 fe4 34.fe4 Bc6 35.e5 Be7 36.Qd2 Ra3 37.Bc4 Qc8 38.Rc1 Be8 39.Kh2 h6 40.Qb2 Bf7 41.Ng3 Ra8 42.Qe2 Qc6 43.Nf5! Bf8 (43...ef5 44.Bf7 Double attack (44.Qf3 Decoy)) 44.Qg4 g6 45.Nh4 g5 46.Rc2 Rd8 47.Nf3 Bg7 48.h4 gh4 49.Bd3 Qd7 50.Qe4 Kf8 51.Rf2 Qc7 (51...Rc8 52.Rb2+- (worse 52.Qh4 Ke8+-)) 52.Rf1 (52.Nh4 Rd4 53.Ng6 Kg8 54.Rf7 Re4 55.Rc7 Be5 56.Ne5 Re5+-) 52...Qa7 53.Qh7 Qe7 54.Bg6 Rd7 55.Ng1 (better 55.Bf7 Qf7 56.Kg1 Be5 57.Qf7 Rf7 58.de5+-) 55...Qg5 56.Nh3 Qg4 57.Nf4 Rd4 58.Ne6! Qe6 59.Rf7 (59.Bf7?! Qe5 (59...Be5 60.Kg1 Qb6 61.Qg8 Ke7 62.Qe8 Kd6 63.Qe6 Kc7 64.Qe5 Kd8 65.Kh1+-) 60.Kh1 Ke7+=) 59...Qf7 60.Bf7 (60.Bf7 Kf7 61.e6 Ke6 62.Qg7+-) 1-0. deutschlandcup (2205) - marekt (2230), gameknot.com, 2016.

5.a3 a5 6.e3 e6 7.b5 Bd6 8.Be2 0-0 9.0-0 a4 10.c4 dc4 11.Bc4 c6 12.Nc3 cb5 13.Bb5 Qb6 (13...Nd5 14.Bd3=) 14.Bd7 Nbd7 (< 14...Qb2 15.Na4 Qa1 16.Qa1 Nbd7 17.Nc3 Ba3 18.Qb1+/–; 14...Nfd7?! 15.Rb1=) 15.Na4 Qb5 16.Bf6 Ra4 17.Bd4 e5 18.Bc3 Rfa8 19.Qb1 Qc6 20.Bb2 e4 21.Nd4 Qd5 22.d3 Nc5 23.de4 Ne4 24.Rd1 Qe5 (24...Ba3? 25.Nc2 Qf5 26.f3+– (26.Ba3?! Qf2 27.Kh1 Nc3=)) 25.Nf3 Qe7 26.Qc2 Qe6 (26...Ba3?? 27.Ra3 Ra3 28.Ba3+–) 27.Rac1 h6 (27...b5 28.Rd4 Rb8 29.Rcd1 Rd4 30.Nd4+/–) 28.Rd3 (28.Rd4 Rd4 29.Nd4 Qe5+/–) 28...R4a6 (28...Ba3? 29.Ra1 Rc8 30.Qa4 Bb2 31.Rad1+–) 29.Rd4 f5 30.Rc4 b5 31.Rc6 Kh7 32.Be5 Ra3 33.Bd6 Nd6 34.Nd4 Qe5 35.Rd6 Qd6 36.Nb5 (36.Qf5?! Qg6 37.Qb5 R3a5=) 36...Qd7 37.Na3 Ra3 38.Rd1 Ra2 39.Rd7 Rc2 40.g4 fg4 41.hg4 Kg6 42.Kg2 Kf6 43.Kg3 Rc3 44.Rd6 Ke7 45.Rb6 Kf7 46.Kf4 Rc5 47.e4 g6 48.f3 g5 49.Ke3 Rc3 50.Ke2 Kg7 51.Ra6 Rb3 52.Rc6 Rb1 53.Kd3 Rd1 54.Ke3 Re1 55.Kd4 Rf1 56.Rc3 Rd1 57.Rd3 Ra1 58.e5 Kf7 59.Rc3 Ra4 60.Rc4 Ra6 61.Kd5 Ra3 62.f4 gf4 63.Rf4 Ke7 64.Rc4 Rd3 65.Ke4 Rg3 66.Rc7 Ke6 67.Rc6 Kd7 68.Rh6 Rg4 69.Kd5 Rg2 (69...Rb4 70.e6 Ke8 71.Rh8 Ke7 72.Rh7 Ke8 73.Kc6+/–) 70.Rh7 Ke8 71.Kd6 Re2 72.Ke6 Kd8 73.Rh8 Kc7 74.Rh1 Kd8 75.Rd1 Ke8 76.Rg1 Kf8 77.Rc1 Kg7 (77...Re4 78.Rc8 Kg7 79.Rc7 Kf8 80.Rf7 Ke8 81.Ra7+–) 78.Rf1 Kg8 (78...Ra2 79.Rf7 Kg6 80.Rc7+–) 79.Kd6 Kg7 80.e6 Ra2 81.Rf3?? (81.e7 Ra6 82.Kc7 Ra7 83.Kd8 Ra8 84.Kd7 Ra7 85.Ke6 Ra6 86.Ke5 Ra5 87.Ke4 Ra4 88.Kd5 Ra5 89.Kd4 Ra4 90.Kc5 Ra5 91.Kc4 Re5=) 81...Kg6?? (better is 81...Ra6 82.Kd7 Ra7 83.Kd8 Ra8 84.Kc7 Ra7 85.Kc6 Ra6 86.Kd5 Ra5 87.Kd4 Ra4 88.Kc5 Ra5 89.Kb4 Re5=) 82.Re3 (82.Rf4 Ra6 83.Kd7 Ra7 84.Kd8 Ra8 85.Kc7 Ra7 86.Kb6 Re7=) 82...Ra6 83.Kd5?? (83.Kc7 Ra8+–) 83...Ra5 84.Kc6 Ra8 85.Kb7 Re8 86.Kc7 Ra8 87.Re2 Ra7? (better is 87...Kf6+=) 88.Kd6+– Ra6 89.Kd5 Ra5 90.Kc6 Ra8 91.Kb7 Re8 92.Kc7 Ra8 93.Rf2 Ra3?? (93...Ra7 94.Kd8 Ra8 95.Ke7 Ra7 96.Kd6 Ra6 97.Kd7 Ra7 98.Kc6 Ra6 99.Kd5 Ra5 100.Kd4 Ra4 101.Kd3 Ra3 102.Kc4 Ra4 103.Kc5 Ra5 104.Kb4=) 94.Rf4?? (94.e7 Ra7 95.Kd8 Ra8 96.Kd7 Ra7 97.Ke6 Ra6 98.Ke5 Ra5 99.Kd6 Ra6 100.Kd5 Ra5 101.Kd4 Ra4 102.Kd3 Ra3 103.Ke2 Ra2 104.Kd1 Ra1 105.Kc2 Re1=) 94...Re3?? (better is 94...Ra7 95.Kd8 Ra8 96.Ke7 Ra7 97.Kd6 Ra6 98.Kd7 Ra7 99.Kc6 Ra6 100.Kc5 Re6=) 95.Kd7+– Ra3 96.e7?? (better is 96.Rf1+–) 96...Ra7= 97.Kd8 Ra8 98.Kc7 Ra7 99.Kd6 Ra6 100.Ke5 Ra5 101.Ke4 Ra4 102.Ke3 Ra3 103.Kd4 Ra4 104.Kd3 Ra3 105.Ke2 Ra2 106.Ke1 Ra1 107.Kd2 Ra2 108.Kc3 Re2 109.Kd4 Re7 110.Rf8 Re2 111.Rf1 Rd2 112.Ke5 ½–½. bambinik – Monkey Busyness, internet, 2002.

5.e3 e6 6.a3 c5 7.bc5 Bc5 8.c4 0-0 9.d4 Be7 10.Nbd2 Qa5 11.Bd3 Ba4 12.Qb1 dc4 13.Bc4 Nbd7 14.0-0 Nb6 15.Bd3 Bb5 16.Bb5 Qb5 17.Bc3 Qc6 18.Rc1 Nfd5 19.Bb4 Qd7 20.Ne5 Qd8 21.Ndc4 Nb4 22.ab4 Nc4 23.Rc4 Qd5 24.Rc7 Bd6 25.Rd7 Rad8 26.Ra5 Rd7?? (better is 26...b5+/–) 27.Rd5+- (27.Rd5 Rdd8 28.Rb5+-; 27.Nd7?! Bh2 28.Kh2 Qd7 29.Ra7 Qd6 30.Kg1 b6+/–) 1–0. Fournier,Frederic (1970) – Lekaiser,Jean, echecsemail.com Coupe, 2004.

5.e3 e6 6.a3 Bd6 7.Be2 0-0 8.0-0 a5 9.b5 c6 10.a4 cb5 11.ab5 Bc8 12.c4 b6 13.d4 Nbd7 14.Nbd2 Bb7 15.Ne5 Qc7 16.cd5 (16.Ndf3 Ne4 17.Bd3 Be5 18.cd5 Bd5 19.Ne5 Ne5 20.de5 Nc5+=) 16...Ne5 (worse is 16...Nd5 17.Rc1 Qd8 18.Nc6+/–) 17.de5 Be5 18.Rc1 Qb8 19.Be5 Qe5 20.de6 Qe6 21.Bf3 Bd5 22.Qa4 Rac8 23.e4 Ba8 24.Rc8 Qc8 (24...Rc8 25.Rd1=) 25.e5 Nd5 26.Qc4 Qe6 27.Qd4 Nc7 28.Ba8 (28.Rb1 f6 29.ef6 Qf6 30.Qc4 Qf7 31.Ba8 Qc4 32.Nc4 Na8=) 28...Ra8 29.Rb1 (29.Nf3 a4 30.Rc1 Nb5=) 29...h6 (29...a4 30.Qd6 Nd5=) 30.Nc4= Qd5 Attacking the isolated pawn on b5 31.Qd5 Nd5 32.Rd1 Nc3 33.Ra1 Rb8 34.Nd6 ½–½. Baumann,Walter (2050) – Kovalsky,Sergey (2235), corr ICCF FM/0861, 2009.

5.e3 e6 6.b5 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 10.Ne5 Be7 11.Nc3 0-0 12.Bd3 Qc7 13.f4 cb5 14.Nd7 Nbd7 15.Nb5 Qb6 16.0-0 Nc5 17.Bd4 Qc6 18.Na7 (18.Be2 Ra8=) 18...Qd7 (18...Qa4 19.Bc5 Bc5 20.Nb5=+) 19.Bb5= Qc7 20.Be2 Qa5 21.Nb5 Nfe4 22.Nc3 Ra8 23.Ne4 Ne4 24.c3 Qc7 25.Bd3 Ra2 26.Qb3 Rd2 27.Be4 de4 28.Ra1 Qb8 29.Ra7?? (29.c4=+) 29...Bd6?? (29...Rd4 30.Rb7 Rd1 31.Kh2 Qd6 32.Re7 Kf8=) 30.Qa4 Bf8 31.Ra8 Qd6 32.Qa7 f6?? 33.Qb7 h6 34.Qe4 Kf7 35.Ra7+– Be7 36.Qb7 e5 37.fe5+– fe5 38.Ra6 Qd8 39.Qf3 Bf6 40.Ra7 Kg8 41.Ra8 ed4 42.Rd8 Bd8 43.Qd5 Kh7 44.Qd8 dc3 45.Qa5 Rd1 46.Kf2 Rc1 47.e4 Rc2 48.Kg3 Kh8 49.e5 Kh7 50.Qb4 Rb2 51.Qc3 Rb8 52.Qd3 g6 53.Qd7 Kh8 54.e6 Rb3 55.Kh2 Rb8 56.e7 h5 57.e8Q (57...Re8 58.Qe8 Kg7 59.Qe7 Kg8 60.g4+–) 1–0. Schlapp12 – NZ cricketer, ChessWorld.net, 2005.

5.e3 e6 6.b5 Bd6 7.d4 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.Nc3 (better 11.bc6!? Nc6 12.c4=+) 11...Qa5 12.bc6 (12.Bd3 Bb4 13.Kd2 cb5-/+) 12...Nc6-+ 13.Bd3 Bb4 14.Kd2 Ne4 (14...Ne4 15.Be4 de4-+) 0-1. phildo (1985) - marekt (2210), gameknot.com, 2016.

5.e3 e6 6.d4 Bb4 7.c3 Be7 8.Ne5 (8.Qb3 c5–/+) 8...0-0 (8...Nc6 9.Bd3–/+) 9.Bd3 c5 10.Nd7 (10.dc5 Nc6 11.c4 Ne5 (< 11...Bc5 12.Nd7 Nd7 13.cd5 ed5 14.0-0=+) 12.Be5 dc4 13.Bc4 Qa5 14.Nd2 Bc6–/+ (< 14...Bc5 15.Bf6 gf6 16.0-0=+)) 10...Qd7 (10...Nbd7 11.0-0–/+) 11.Nd2 Nc6 12.0-0 Rac8 (12...c4 13.Bc2–/+) 13.Qa4 (13.a4 cd4 14.cd4 Rc7–/+) 13…c4–+ (14.Bb1 Rfd8–+) 0–1. Garfield85 (1730) – Kelish (1970), internet, 2006.

4.a3 e6 5.Nf3 h6 6.e3 a5 7.c4 Nf6 (7...ab4 8.ab4 Ra1 9.Ba1=) 8.cd5 ed5 9.d4 (better 9.Nd4!? Bd7 10.b5=) 9...ab4-/+ 10.ab4 Bb4 11.Nbd2 Nbd7 12.Qb3 Ra1 13.Ba1 c5 (better 13...Qa8 14.Bc3 Bd6-/+) 14.Bb5? (better 14.dc5 Qa5 15.Bd4-/+) 14...Qa5-+ 15.Bd7 Nd7 16.dc5?? (16.Qd1 c4 17.0-0-+) 16…Qa1 (16...Qa1 17.Qd1 Qa6-+) 0-1. phildo (1985) - objorn (2465), gameknot.com, 2016.

4.Nc3 e5 5.g4 Be6 6.d4 (6.a3!?–/+) 6...Bb4 7.de5? (better is 7.Qd2–+) 7...d4 8.Nf3 Nc6 9.Bg2 (9.Nd4 Nd4 10.a3 Ba5–+) 9...dc3 10.Bc1 (10.Qd8 Rd8 11.Bc1 Bc5–+) 10...Qd1 11.Kd1 0-0-0 12.Ke1 Nge7 13.Ng5 (13.a3 Bc5–+) 13...Nd4 (< 13...Ne5 14.Rb1 N5c6 15.Ne6 fe6 16.a3–+) 14.Be4 Bd5 15.Bd5 Nc2 16.Kf1 Na1 17.Nf7 Rd5 18.Nh8 Ra5 19.Kg2 Ra2 20.Rd1 Nb3 21.Nf7 Nc6 22.e6 (22.Bf4 c2 23.Rf1 Bd2 24.Bd2 Nd2–+) 22...Ra1 (23.e3 c2–+) 0–1. LuckyMiki – pierre (2125), internet, 2007.

4.d3 Nd7 5.e3 (5.g4 Bg6=+) 5...e5=+ 6.Nc3 (better is 6.a3!?=+) 6...Bb4–+ 7.g4 Be6 8.Nge2 h5 9.gh5 Qh4 10.Ng3 (better is 10.a3 Ba5 11.d4–+) 10...d4 11.ed4 ed4 12.Qd2 0-0-0 13.a3 Ba5 (13...dc3 14.Bc3 Ne5 15.Ke2 Bg4 16.hg4 Qg4 17.Ke1 Nf3 18.Kd1 Nd2 19.Be2 Qg3 20.fg3 Bc3 21.Bg4 Kb8 22.Rh4–+) 14.0-0-0 (14.Bg2 dc3 15.Bc3 Bc3 16.Qc3 Ngf6–+) 14...Nb6 15.f4 (15.Nge4–+) 15…Qg3 (16.h6 Bc3 17.Bc3 dc3 18.Qc3 Nh6–+) 0–1. dusterstar – pierre (1955), internet, 2006.

4.d3 e5 5.Be5 Nc6 6.Bf4 Bb4 7.c3 =+.

4.d4 e6 5.g4 (5.a3!?=+) 5...Be4–/+ 6.f3 Qh4 7.Kd2 Bg6 8.c3 Bd6 9.e3 Ne7 10.Qe2 a5 11.a3 ab4 12.ab4?? (better is 12.cb4 Nd7 13.Nc3–/+) 12...Ra1–+ 13.Ba1 Bb1 14.f4 Be4 15.Rh2 0-0 16.Qf2 Qf6 17.Bd3 (17.h4–+) 17...Bd3 18.Kd3 Qg6 19.Kd2 Qb1 20.Qe1 (20.Nf3 Qa2 21.Kd3 Qa1–+) 20...Qa2 21.Kd3 Qh2 22.Nf3 (22.g5 Nd7–+) 22...Qh3 23.Ne5 f6 24.Bb2 fe5 25.de5 Be5! 26.fe5 Qg2 27.Ba3 Nbc6 28.b5 Ne5 29.Kd4 Qe4 30.Kc5 Nd3 0–1. michael709 – pierre (2125), internet, 2007.

4.e3 Be4 5.Nc3= Bg6 6.Nf3 a6 7.a4 (7.a3=) 7...Nd7 (better 7...e6!?=) 8.Nd5+- Nb6 (8...e5!? 9.b5 ab5 10.ab5 Ra1 11.Ba1 e4+-) 9.Nb6+- cb6 10.Bc4 Qc7 (10...e6 11.0-0+-) 11.Ne5 (11.d3!? Qd6 12.Bd4 Nf6+-) 11...e6+- 12.0-0 (12.Ng6 hg6 13.Be2 Nf6+-) 12...Nf6 (12...Bb4 13.Rb1 Bd6 14.Ng6 hg6 15.d3+= (worse 15.Bg7 Rh7–/+)) 13.Ng6 (13.Rb1+-) 13...fg6? (better 13...hg6!? 14.d3 Bb4+=) 14.Be6+- Bb4 15.c3 Be7 (15...Bd6 16.d4+-) 16.Qb3 Qd6 17.Ba3 Qc7 18.Bb2 Bd6?? (18...Qd6 19.d4 Rd8+-) 19.f4 Ne4 20.Qc2 Ng3 (20...Nf6 21.Rae1+-) 21.Rf3 Nh5 22.Qb3 Nf6 23.d3 Qe7 (23...Rf8 24.Re1+-) 24.e4 Nd7 25.d4 White prepares the advance e5 25...Nb8 (25...Nf8 26.Bd5 Qc7+-) 26.e5 Bc7 (26...Bc5 27.dc5 bc5+-) 27.Ba3 Qh4 28.Qd5 Qd8 (28...Rf8+-) 29.Bf7 1–0. GuestCZSH – lionjoshi, freechess.org, 2017.

4.Nf3 Qd7 5.e3 Qc6? (better 5...Nc6!?+=) 6.Nd4 (better 6.Nc3 Qd6 7.Nb5+-) 6...Bc2?? (better 6...Qd7 7.Nf5 Qf5+-) 7.Qc2 (better 7.Nc2!? Qg6+-) 7...Qc2 8.Nc2 e6 9.Bb5 c6 10.Be2 a5 11.b5 c5 12.d3 h5 (12...Nf6 13.Nd2+-) 13.0-0 Nf6 14.Bf6 (14.Nd2!? Nbd7+-) 14...gf6 15.Nc3 Rg8 (15...Nd7 16.Ne1+-) 16.Na4 (16.Bh5 Nd7+-) 16...Nd7 17.g3 (17.Bh5!? f5+-) 17...f5 18.Rab1 (18.Bh5 Rh8 19.Bf3 Bg7+-) 18...Rg5? (better 18...h4+-) 19.Kh2 Bd6 (19...Nf6 20.b6+-) 20.h4 (20.f4 Rg8 21.Bh5 Kf8+-) 20...Rg6 21.Bh5?? (better 21.Kg2 Rh6 22.b6+-) 21...Rh6= 22.Be2 (better 22.Bf7 Kf7 23.Kg2=) 22...Ke7?? (better 22...Rh4! 23.Kg2 Ra4–+) 23.Kg2+- Rg8 24.Rh1 f4 (24...Rf6 25.Kh3+-) 25.ef4 e5 Black prepares d4 (25...Bf4 26.b6 Bd2+-) 26.fe5 Be5 27.Ne3 d4 (27...Kd8 28.Bf3 d4+-) 28.Nf5 Ke8 29.Nh6 Rg6 30.Nf5 Nf6 31.h5 (better 31.Bf3!? Nd7+-) 31...Rg5 32.Nh6 (better 32.Nh4 Bc7+-) 32...Nh5 33.Rh5 Bg3 34.fg3 Rh5 35.Bh5 (35.Bh5 Kf8 36.Nf5 Ke8 37.Re1 Kd8 38.Re7 c4 39.Nb6 cd3 40.Bf7 d2 41.Rd7) 1–0. GuestNRRC – GuestHMMK, freechess.org, 2017.

4.Nf3 Nd7 5.e3 Ngf6 6.c4 e6+= (6...dc4 7.Bc4 e6 8.a3 a5 9.b5 Be7) 7.c5 (7.a3 a5 8.c5 ab4 9.ab4 Ra1) 7...Be7 (7...a5 8.a3+= ab4 9.ab4 Ra1) 8.d3 (8.Nd4 c6 (8...0-0 9.Nf5 ef5) 9.Nf5 ef5=) 8...0-0 (8...a5 9.a3= ab4) 9.Nh4 (9.a3 Bg6) 9...Ne8 (better is 9...a5!?+=) 10.Nf5+= ef5 11.g4 (11.Qf3 Ndf6+=) 11...Bf6 (11...a5 12.a3=) 12.Nc3 (12.d4 f4 13.ef4 h6+=) 12...c6 (12...d4!? 13.Nd5 de3 14.Nf6 Nef6+=) 13.gf5 Bh4 (13...a5 14.a3+=) 14.Qg4 Ne5 (14...Qe7 15.Qf4+/–) 15.Qg2 Qf6 16.e4 (16.d4 Nd7+/–) 16...Qh6 (16...d4!? 17.Nb1 b6+/–) 17.Nd5+/– Nd3 (17...cd5 18.Be5 de4 19.Qe4+=) 18.Bd3+- cd5 19.e5 (19.ed5!? Bf6 20.Bf6 Nf6 21.Rg1+/–) 19...Qe3+= 20.Be2 d4 21.Qf3 (21.Rd1 Rd8 22.f6+= (22.Qb7?? Qf2 23.Kd2 d3–+)) 21...Qe5= 22.0-0-0 Attacking the isolated pawn on d4 (22.Rd1 Rd8 23.Qb7=) 22...Qc7 (22...Rd8!? 23.Rhe1 Bf6=) 23.Bd4+/– a5 24.b5 (24.Rhg1 Bf6 25.Qg3 Qd8+=) 24...Bf6+= 25.Bf6 (better is 25.b6 Qe7 26.Qe3+=) 25...Nf6–/+ 26.c6 (26.Rd2 Qc5 27.Rc2 Qe5–/+) 26...bc6 27.bc6 (27.Qg3 Qc8 28.Rhg1 cb5 29.Kb2 g6–/+) 27...Qe5 28.Bd3 0–1. De Visser,Arno – de Graaf, 1984.

4.Nf3 f6 5.Nh4 Nh6 6.Nf5 Nf5 7.e3 =.

4.g4 Be4 5.f3 Bg6 6.e3 h5 7.Bg2 e5 8.a3 (8.Be5 Nc6 Double attack (8...Bb4 Discovered attack; 8...Nc6 Decoy)) 8...Nd7 9.d3 a5 10.b5 hg4 11.fg4 (11.hg4?? Rh1 12.Bh1 Qh4 13.Kd2 Qh1–+) 11...Qh4 12.Kf1 e4 13.de4 de4 14.Nd2 Ngf6 15.Qe1 Qg5 16.Qe2 0-0-0 17.Nb3 a4 18.Na5 Bc5 19.Nc6 Nd5 20.Bd4? (20.Nd8 Ne3 21.Ke1 Qh4 22.Kd2 Rd8 23.Bg7 Nf6 24.Kc1 Ng2 25.b6–+) 20...Bd4 21.ed4 Qf6 22.Ke1 bc6 23.bc6 Nc5! 24.dc5 (24.Qc4 Qh4 25.Kd2 Qg5 26.Ke1–+) 24...Qa1 25.Kf2 e3 26.Kf3 Qf6 27.Kg3 Qf4 0–1. combijack (1770) – adamsf (2015), gameknot.com, 2010.

5.a3 Nf6 6.d4 Be7 7.Nf3 0-0 8.c4 a5 9.c5 ab4 10.ab4 Nc6 11.b5 (11.Ra8 Qa8 12.Bc3 Qa2=+) 11...Ra1-/+ 12.Ba1 Nb4 13.Bc3 (13.Nc3!?-/+) 13…Nc2 (13...Nc2 14.Kd2 Ne4 15.Ke2 b6-+ (15...Nc3?! 16.Nc3 Nb4 17.Qa4=+)) 0-1. phildo (2090) - zajonc (2440), gameknot.com, 2021.

5.b5 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Nd7 9.c4 Qa8 10.Nc3 dc4 11.Bc4 Ne5 12.Be2 Nd3 13.Bd3 Bd3 14.Nge2 e5 15.0-0 Nf6 16.Re1 Be7 17.Ng3 0-0 18.Qb3 Qa3 19.Qa3 Ba3 20.Nb1 Bd6 21.e4 Ra8 22.Bc3 Ra4–+ 23.f3 Nd7 24.Nf5 Bc5 25.Ne3 c6 26.bc6 bc6 27.Kh2 Ra6 28.g3 Rb6 (29.Rc1 Be3 (29...Bb1?! 30.Nc4 Rb5 31.Be5–+) 30.de3 Rb1 31.Rb1 Bb1–+) 0–1. chessleon – pierre (2130), internet, 2007.

5.Nf3 Bb4?? 6.Bg7 Nf6 7.Bh8 +-.

5.Nf3 Nf6 6.a3 Nbd7 7.c4 c6 8.Nh4 Bg6 9.Ng6 hg6 10.Be2 dc4 11.Bc4 Nb6 12.Be2 Nbd5 13.Nc3 Bd6 14.Nd5 ed5 15.0-0 Bc7 16.Qc2 Qd6 17.f4 Bb6 18.Be5 Qe6 19.a4 g5? (better is 19...a5!? 20.Rfb1 Qe7+=) 20.a5+- (worse is 20.fg5 Qe5 21.gf6 Bc7+=) 20...Bd8 (better is 20...gf4 21.Bf6 Be3 22.de3 Qe3 23.Rf2 gf6+-) 21.Qc3?? (better is 21.a6 b6 22.fg5+-) 21...Ne4= 22.Qc1 Ng3 23.Rf2? (better is 23.Re1 Ne2 24.Re2=) 23...g4–+ (23...Ne2?! 24.Re2 f6 25.Bd4=) 24.Bg4 Qg4 25.Qf1? Nf1 (25...Nf1 26.hg4 Ng3–+) 0–1. mr5reasons1 (1630) – burt65, gameknot.com, 2012.

5.Nf3 Nf6 6.b5 c6 7.a4 h6 8.Nd4 Bg6 9.bc6 bc6 10.Be2 Bd6 11.0-0 c5 (11...0-0 12.f4=+) 12.Nb5 Be7 13.f4 (13.N1a3!?=) 13...a6=+ 14.N5a3 Nc6 15.d3 Rb8 16.Qc1 Qb6 17.Bc3 c4 18.a5 Qa7 19.dc4 (19.Kh2 Bc5 20.Bd2 0-0-/+) 19...d4-/+ 20.Bf3 Be4 21.ed4 Bf3 22.gf3 Nd4 23.Kh2 Rd8 24.Qb2 Qc7 25.Bd2 Nf5 26.Qc1 0-0 27.Nc3 Bc5 (27...Bb4!? 28.Be1-+) 28.Ne4-/+ Rd2 29.Qd2 Be3 30.Nf6 gf6 31.Rg1 Kh8 32.Qe2 Bg1 33.Rg1 Qf4 34.Kh1 Ng3 35.Rg3 Qg3 36.Qf1 (36.Qg2 Qe1 37.Qg1-+) 36...Rd8 37.Nb1 Rd4 38.c3 Rh4 39.Nd2 Rh3 40.Qh3 Qh3 41.Kg1 Qf5 42.Kf1 Qd3 43.Ke1 Qc3 44.Kd1 f5 45.Ke2 f4 46.Kd1 Kg7 (46...h5!? 47.c5-+) 47.Ke2 h5 48.Kd1 h4 (48...h4 49.c5 h3 50.Nf1 Qf3 51.Ke1 Qe4 52.Kd1 Qh1 53.Ke2 Qg2 54.Ke1 f3 55.Ng3 f2 56.Kd2 f1Q 57.Kc3 Qg3 58.Kc2 Qgd3 59.Kb2 Qfb1) 0-1. DEFFM – GuestHGNY, freechess.org, 2021.

5.Nf3 Nf6 6.b5 h6 7.Be2 Bd6 8.0-0 0-0 9.d4 (9.a4 a6=) 9...a6=+ 10.a4 ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.Nbd2 Nb6 14.c4 Nc4 15.Nc4 dc4 16.Bc4 Qe7 17.Bd3 Ra8 (17...Rd8 18.Qe2 Nd5 19.e4=) 18.Bf5 ef5 19.Ne5 (19.d5 Nd7=) 19...Ne4 (19...Qe6 20.Qc2=+) 20.Nc4 f4 (20...Qd7 21.b6=) 21.Qf3 (21.ef4 Bf4 22.Re1 f5=) 21...fe3 22.fe3 (22.Ne3 Qe8 23.Nf5 Nd2=) 22...Ra2 (22...Qe6 23.Nd6 cd6 24.Qd1–/+) 23.Qg4 (23.d5 Ng5 24.Qf5 Qe4 25.Qe4 Ne4 26.Nd6 Nd6=+) 23...Nd2 24.d5 (24.Qc8 Kh7 25.Qf5 g6 26.Qf7 Qf7 27.Rf7 Kg8 28.Nd6 cd6 29.Rb7 Ra1 30.Kf2 d5–/+) 24...f5–/+ 25.Qe2 Nf1 26.Qa2 Ne3 27.Nd6 Qd6 (28.Bd4 f4 29.Be3 fe3–+) 0–1. Koziol,Pawel – Medveski,Mike, IECG, 2000.

5.a3 a5 6.b5 e6 7.Nf3 Bd6 8.Nh4 Be4 (8...Bg6 9.Nc3=) 9.Be2 (9.d3 Bg6=) 9...h6=+ 10.d3 Bh7 11.Nd2 Nbd7 12.a4 c6 13.bc6 (13.c4 Nc5 14.Qc2 0-0=+) 13...bc6 14.0-0 Rb8 15.Nb3 0-0 16.Nf3 (16.Rb1 Qc7=+) 16...Qc7 17.Bc3 Bb4 18.Bb4 Rb4 19.c3 Rb6 20.Nfd2 (20.Qc2 Rfb8 21.Rfb1 e5=+) 20...Rfb8–/+ 21.Rc1 Ne5 22.Nc5 Nfd7 23.Nd7 Nd7 24.d4 Qd6 25.c4 Rb2 26.cd5 ed5 (< 26...Qd5 27.Bf3 Qg5 28.Bc6+/–; 26...cd5?! 27.Nf3=) 27.Nf3 R8b3 28.Ne5 Ne5 29.de5 Qe6 30.Bg4 Qe5 31.Rc6 Bd3 32.Rc8 Kh7 33.Re1 Ra3 34.Qf3 f5 35.Bh5 Be4 (< 35...Ra4 36.Re8 Qf6 37.Qd5+=) 36.Qf4 Qf4 37.ef4 Ra4 (37...Raa2 38.Rc6 g6 39.Bg6 Kg7 40.Rf1=) 38.Rc6 g5 39.Rc7 Kh8 40.fg5 hg5 41.f3 Rb1 42.Kf2 Raa1 43.Rb1 Bb1 44.Kg3 Ra2 45.f4 gf4 46.Kf4 Rg2 47.Ra7 d4 48.Ke5 Rg5 49.Kf6 Rg8 50.Bf7 Rf8 51.Ra5 Be4 52.Ra4 d3 53.Rd4 Kh7 54.Ke7 Rc8 55.Bc4=+ Kg6 56.Bd3= Bd3 57.Rd3 ½–½. 1ricardo – pierre, internet, 2009.

5.c3 Nbd7 6.d3 e6 7.Nf3 a5 8.b5 Bd6 9.a4 0-0 10.Be2 h6 11.Nbd2 e5 12.0-0 Qe7 13.Re1 Rfd8 14.Bf1 e4 15.de4 Ne4 16.Nd4 Bg6 17.N2f3 Qf6 18.Qc1 Ne5 19.Be2 c6 20.Rf1 (better is 20.bc6!? bc6 21.c4–/+) 20...c5–+ 21.Ne5 Be5 (21...Qe5?! 22.Nf3 Qe7 23.c4 dc4 24.Qc4=) 22.Nf3 Bc3 23.Bc3 Nc3 24.Re1 d4 25.ed4 cd4 26.Ra3 (better is 26.Qd2–+) 26...Rac8 27.Qa1 (27.Qd2 Nb1 28.Rb1 Bb1–+) 27...d3 (27...Ne2?! 28.Re2 Qf4 29.Rd2–+) 28.Bf1 d2 29.Nd2 Rd2 30.Rc1 Bc2 (better is 30...Qf2!? 31.Kh2 Qf4 32.Kh1–+) 31.f3 Qf4 32.Kh1 Nd1 33.Ra2 (33.Kg1–+) 33...Nf2 34.Kg1 Nh3 35.gh3 (35.Kh1 Qh4 36.Qg7 Kg7 37.Be2 Nf4 38.Kg1 Ne2 39.Kf1 Ng3 40.Kg1 Qh1) 35…Qh2 0–1. grahamtrue (2140) – pierred (2765), net–chess.com, 2011.

5.c4 e6 6.c5 a5 7.a3 ab4 8.ab4 Nc6 (8...Ra1!? 9.Ba1 Be7+=) 9.Ra8= Qa8 10.Nc3 (better is 10.Bf6 gf6 11.Bb5=) 10…Nb4–/+ 0–1. quorzic – marre, internet, 2010.

5.d4 e6 6.a3 a5 7.c3 (7.b5 Be7=+) 7...Bd6–/+ 8.Nd2 Nbd7 9.Bb5 0-0 10.Ngf3 Ne4 (10...c6 11.Be2–/+) 11.Nb3 (11.Ne4 de4 12.Nd2 c6=+) 11...c6 (11...ab4 12.cb4 c6 13.Bd3=+) 12.Bd3 b6 13.b5 (13.ba5 ba5 14.Rb1 Rb8–/+) 13...a4 (better is 13...cb5 14.Bb5 Qc7–/+) 14.Nbd2 (better is 14.bc6!? Nb8 15.Nc1–/+) 14...Nf2!–+ 15.Kf2 Bd3 16.bc6 Nf6 17.Nb1 Ne4 18.Kg1 Bb5 19.Nbd2 Ng3 20.Ne5 Qg5 21.Qf3 Be5 22.de5 Nh1 23.Kh1 Bc6 24.Rf1 Qe5 25.Rb1 Rac8 26.c4 Qg5 27.Be5 Qe5 28.Rb6 Qc3 29.Qe2 dc4 30.Nc4 Bd5 31.Nd6 Qc1 32.Kh2 Rc2 (33.Qg4 f5–+) 0–1. Abuloai – pierre (1975), internet, 2006.

5.g4 Bg6 6.g5 Nfd7 7.a3 e5 8.Nc3 a5 9.f4 ab4 10.ab4 Ra1 11.Qa1 Nc6 12.Ba3 d4 13.b5 dc3 14.bc6 cd2 15.Kd2 Ba3 16.Qa3 Nc5 17.Kc1 Qd5 18.Qa8 Ke7 19.Qh8 Qa2 20.Bd3 Bd3 21.Kd2 Qc2 22.Ke1 Ne4 ½–½. mtrc – ayottey, internet, 2002.

6.a3 a5 =.

6.a3 Bd6 7.c4 0-0 8.c5 Be7 9.Bf6 (9.d3 b6=) 9...Bf6=+ (< 9...gf6 10.d4+=) 10.d4 Nd7 11.Bd3 Bd3 12.Qd3 e5 13.de5 (13.Qc3 e4 14.Nfd2 a5=+) 13...Ne5= 14.Ne5 Be5 15.Nc3 (15.Ra2 c6=) 15...a5 (15...d4 16.ed4 Bd4 17.0-0-0 Bf2 18.Ne4=+) 16.b5 (16.0-0!?=+) 16...d4–/+ 17.f4 (17.Ne4!? de3 18.Rd1–/+) 17...de3–+ 18.Qe3 Bd4 19.Qf3 (19.Qd3 Qf6 20.Rc1 Qf4–+ (20...Bc5 21.Ne4 Rfe8 22.Kd1–+)) 19...Re8 (better is 19...Qe7 20.Kd2 Rad8 21.Kc2–+) 20.Kd2 Be3 21.Kc2 Qd2 22.Kb3 Rad8 (22...a4 23.Na4 Bd4–+) 23.Rhd1?? a4 (24.Ka4 Qc3 25.Rd6 Rd6 26.b6 Ra8 27.Kb5 Qc5) 0–1. thotares (1710) – pierre (2085), internet, 2007.

6.a3 Bd6 7.c4 dc4 8.Bc4 Nbd7 9.d3 =+.

6.a3 Bd6 7.Be2 (7.Nh4 Bg6=) 7...0-0 (7...a5 8.b5=+) 8.0-0 (8.Nh4 a5=) 8...a5 9.ba5 (9.b5 Qe7=+) 9...Ra5=+ 10.Nd4 Bg6 11.Nc3 (11.f4 Nbd7=+) 11...c6 12.Rb1 (12.f4 Nbd7=+) 12...b5–/+ 13.Na2 (13.Bd3 e5 14.Nb3 Ra7–/+) 13...Ba3–+ 14.Ba3 (14.f4 Bb2 15.Rb2 Qb6–+) 14...Ra3–/+ 15.Nb4 Qc8 16.Nd3 (16.Qc1 Ra4 17.Nf3 Qc7–+) 16...Nbd7 17.Nb3 (17.f4 Qb7–+) 17...Qc7–+ 18.Nbc5 (18.Nf4 Bf5–+) 18...Rfa8 19.Nd7 Nd7 20.Nf4 Nf6 (20...Bf5 21.Nh5–+) 21.Ng6 hg6 22.Bf3 R8a4 23.Qe2 e5 24.g3 e4 25.Bg2 Ra2 26.f3? Rc2 27.fe4 de4 28.Rfc1 Rc1 29.Rc1 Qg3 30.Qd1 Qd6 31.Qc2 Rc4 32.Qb2 Rc1 33.Qc1 g5 34.Kf2 g4 35.hg4 Ng4 (36.Ke2 Qd3 37.Ke1 Ne5–+) 0–1. sociale63 – pierre (2015), internet, 2006.

6.a3 Nbd7 7.Nh4 Bg6 8.c4 Bh5 9.g4 Bg6 10.cd5 Be4 11.Nf3 Nd5 12.d3 Bg6 13.Nc3 N5b6 14.h4 h5 15.g5 a5 16.b5 Bd6 17.Ne5?? Ne5–+ 0–1. "lasker" (1910) – pierre (2080), internet, 2007.

6.b5 a6 7.a3 ab5 8.Bb5 c6 9.Be2 Nbd7 (9...Bd6 10.Nh4=+) 10.d4 (10.Nh4!?=) 10...Bd6=+ 11.0-0 0-0 12.c4 Ne4 (12...dc4 13.Bc4 Nd5 14.Bd3 Bd3 15.Qd3=+) 13.Nc3 (13.c5 Be7=) 13...Ng5 (13...Nc3 14.Bc3 dc4 15.Bc4=+) 14.cd5 (14.c5 Bb8=+) 14...ed5 15.Ng5 Qg5 16.Bg4 Bg4 17.Qg4 Qe7 18.a4 Nb6 19.Qe2 Nc4 20.Qc2 Rfe8 21.Rfe1 Qg5 22.Bc1 b5! 23.e4 (23.ab5 Na3 Double attack (23...Ra1 Pinning; 23...Ra1 Deflection; 23...Na3 Decoy)) 23...Qg6 24.Qe2? (better 24.f3!?-/+) 24…b4-+ 0-1. phildo (1985) - rcm06 (2255), gameknot.com, 2016.

6.c4 dc4 7.Bc4 Nbd7 8.0-0 Bb4 (8...Nb6 9.d3 Nc4 10.dc4 Qd1 11.Rd1 Bb4 12.Nc3–/+) 9.Qb3 (9.d3!?=+) 9...a5–/+ 10.a3 Bd6 11.Nc3 (11.Bd4 a4 12.Qb7 Be4–/+) 11...c6–+ 12.Nd4 (12.d4 b5 13.Be2 a4–/+) 12...Bg6 13.a4 (13.Qb7 Rb8 14.Qc6 Rb6–+) 13...Nc5 14.Qa2 (14.Qd1 Nd3 15.Qb3 e5–+) 14...0-0 15.Ba3 Nd5 16.Nb3 (better is 16.Qb2–+) 16...Nb4 17.Bb4 ab4 18.Nc5 Bc5 (18...bc3 19.Nb7 Qe7 20.Nd6 Qd6 21.dc3+=) 19.Ne2 (19.d4 Bd4 20.Rad1 bc3 21.Rd4 Qa5–+) 19...b5! 20.Bb3 Bd3 21.Rfe1 (21.Rfc1 Bd6 (21...Be2?! 22.Rc5 ba4 23.Ba4–+) 22.Nf4 Bf4 23.ef4 Qd4–+) 21...ba4 22.Ba4 Bd6 23.Qb2 (23.Nc1 Bb5 24.Qc2 Qa5 25.Bb5 Qa1–+ (25...Qb5?! 26.Nb3–/+)) 23...Qf6 24.Qf6 gf6 25.Nf4 (25.Ra2 Bc4 26.Raa1 c5–+) 25...Bf4 26.ef4 c5 27.Rec1 (27.f5 e5 28.Ra2–+) 27...c4 0–1. StephenHilton – pierre (2040), internet, 2006.

6.c4 dc4 7.Bc4 Nbd7 8.a3 Bd6 9.d4 (9.d3 Nb6=) 9...c6 10.0-0 Ne4 11.Nbd2 0-0 12.Ne4 Be4 13.Nd2 Bg6 14.e4 Nb6 15.Bb3 Qh4 16.Re1 Rfd8 (16...Qf4 17.e5 Be7 18.Nf3=) 17.Qg4 (17.Nf3!? Qh5 18.Qd2=) 17...Qg4=+ 18.hg4 a5 19.Bc3 ab4 20.ab4 Bf4 21.Ra5 (21.Bc2!?=+) 21...Bd2–/+ 22.Bd2 Rd4 23.Ra8 Na8 24.Ra1 Nc7 (24...Nb6 25.Be3 Rb4 26.Bb6–+) 25.Bf4–/+ Na6 (25...Rb4?! 26.Bc7 h6 27.Bc2 Be4 28.Ba5=) 26.b5 cb5 27.f3 Kf8 28.Ra5 Ke7 29.Rb5 Rb4 30.Rb4 Nb4 31.Be5 f6 32.Bb2 Nc6 33.Ba3 Kf7 34.Kf2 Nd4 35.Ba2 b6 36.Bc4 h5 (36...h6 37.Bb2 Nc6 38.Ke3=+) 37.gh5= Bh5 38.g4 Bg6 39.Bd6 Ke8 40.Bc7 (40.Ke3!? e5 41.f4=) 40...b5=+ 41.Bb3?? (better is 41.Bf1=+). Kraemer – Stabenow,Juergen, corr SOK–87–05, 1988.

5.a3 a5 6.b5 Nd7 7.e3 Ngf6 8.Nh4 Bg6 9.Ng6 hg6 10.c4 c5 11.d3 Bd6 (11...dc4 12.dc4 Qb6 13.Nd2+=) 12.Nd2 Qc7 13.Be2 Rd8 14.Qa4 b6 (14...Be5 15.b6 Qd6 16.Be5 Qe5 17.Ra2+=) 15.cd5+= ed5 16.Rc1 0-0 (16...Kf8 17.Qb3+=) 17.h4 (17.Nf3 Qb7+=) 17...Rfe8 (17...Rde8 18.h5 gh5 19.Bh5 Nh5 20.Rh5+=) 18.h5 (18.g4 Be5 19.d4 Bd6+=) 18...gh5 19.Bh5 Be5 (19...Nh5 20.Rh5 Ne5 21.Be5 Re5 22.Rh3+=) 20.d4 Bd6 (20...Nh5 21.Rh5 Bf6 22.Qb3+=) 21.dc5 (21.Bf3!?+=) 21...Nc5= 22.Qh4 Nd3 23.Kf1 Nc1 24.Bf6 Kf8 (24...Ba3?? 25.Bf3 Qh2 26.Rh2 gf6 27.Qh8) 25.Bg4 (25.Bd8 Qd8 26.Bf3 Qh4 (26...Ba3? 27.Qh8 Ke7 28.Qg7+-) 27.Rh4 Ba3 28.Bd5 Ke7=) 25...gf6 26.Qf6 Bh2 27.Qh6 Ke7 28.Qh4 Kf8 29.Rh2 Qe5 30.Rh3 Rd6 31.Nf3 Qa1 32.Qh8 Qh8 33.Rh8 Ke7 34.Rh7 Nd3 35.Nd4 (35.Ke2 Nc1 36.Kd2 Nb3 37.Kc3 Nc5=) 35...Rf6 36.Bf5 Ne5 37.Ke2 (37.Rh5 Kd6=) 37...Rg8 38.a4? Rg2–/+ (39.Rh8 Nc4–/+) 0–1. Bendig,Frank (2090) – Medveski,Mike (1835), IECG, 2000.

5.b5 a6 6.e3 ab5 7.Bb5 Nd7 8.0-0 (8.Nc3 c6 9.Be2 e5+=) 8...Ngf6 (8...Ne7 9.Nh4=) 9.Nh4 Bg6 10.Ng6 hg6 11.a4 (11.Be2 e5=) 11...c6 12.Be2 Bd6 13.c4 dc4 14.Bc4 Qa5 (14...Nb6 15.Be2=) 15.d4 (15.d3 Nb6=) 15...Nb6 The isolani on a4 becomes a target 16.Bb3 (16.Bd3 Bb4=) 16...Bb4 17.Qc2 (17.Ba3 g5=) 17...Qg5 18.Kh1 Qg4 19.Rc1 (19.f3 Qg3 20.Ba3 Ba3 21.Ra3–/+) 19...Ra5–/+ 20.Nc3?? (better is 20.d5 Rc5 21.Qd1 Nbd5 22.Rc5 Qd1 23.Bd1 Bc5 24.Nc3–/+) 20...Rh3 21.Kg1 Rg5 (21...Rg5 22.f3 Qh5–+) 0–1. Bonetti,Shane – Waltercomp (2500), ICC, 2002.

5.b5 a6 6.e3 Nf6 7.Nc3 =.

5.b5 a6 6.e3 Nf6 7.Nd4 Bg6 8.ba6 Na6 9.Bb5 Nd7 10.0-0 Be7 11.f4 0-0 12.f5 ef5 13.Nf5 Bf5 14.Rf5 Nf6 15.a4 Nc5 16.Rf4 Nfe4 17.Nc3 c6 18.Ne4 Ne4 19.Bd3 Bg5 20.Rf5 Bf6 21.Bf6 Nf6 22.Rb1 Qe7 23.c4 dc4 24.Bc4 Ra7 25.Qb3 Qd7 26.Re5 Rfa8 27.a5 Ne8 28.Qb4 Nd6 29.Bd3 Qc7 30.Qh4 h6 31.a6 b5 32.Rc5 Ra6 33.Rbc1 Qd7 34.Qd4 Ra4 35.Qc3 Ra3 36.Qc2 Ra2 37.Qb1 Rd2 0–1. Bonetti,Shane – Chezzz (2510), ICC, 2002.

5.b5 Ne7 6.e3 =.

5.d3 Bb4 6.c3!? Bc5 7.Nbd2 +=.

5.d3 Bb4 6.c3 Bc5 7.d4 (7.c4 Nf6–/+) 7...Bd6 8.e3 Nf6 9.Nbd2 0-0 10.Be2 (10.c4 dc4 11.Bc4 Nbd7–/+) 10...Ne4 (10...Nc6 11.Nh4–/+) 11.0-0 (11.Qb3 Nd2 12.Nd2 b6–/+) 11...Nd7 (11...Nd2 12.Nd2 Nd7 13.Qb3–/+) 12.Ne4 (12.c4 Nd2 13.Nd2 Qf6–/+) 12...de4 13.Nd2 Qg5 14.Kh1 c5 (14...Qh4 15.Bg4–/+) 15.Ba3–/+ Rfd8 16.Nc4 Bc7 17.Qc1 (17.Qb3 Rab8–/+) 17…Qh4–+ (18.Qe1 b5–+) 0–1. george (1655) – pierre (2090), internet, 2007.

5.d3 Bb4 6.c3 Bd6 7.c4 Nf6 8.g4–/+.

5.d3 Bb4 6.Nbd2 Nf6 7.a3 Bd6 8.e3 h6 9.Be2 (9.Qe2 Bg6-/+) 9...Nbd7 10.0-0 0-0 11.c4 c6 12.cd5 cd5 (worse 12...Nd5 13.e4+/-) 13.Nb3 (13.Nd4 Bg6-/+) 13...Rc8 (13...e5 14.Qd2-/+) 14.Nfd4 Bg6 15.Nb5 Bb8 16.Rc1 Qb6 17.d4?? (better 17.a4-/+) 17...Rc1-+ 18.Qc1 a6 0-1. phildo (1990) - forsetinn (2470), gameknot.com, 2016.

5.d3 Bb4 6.Nbd2 Nf6–/+ 7.g4 Bg6 8.h4 h6 (worse is 8...Ng4 9.c3 Nf2 10.Kf2 Bc5 11.d4+/–) 9.Bh3 Nc6 10.a3 Ba5 11.e3 Qe7 12.Qe2 e5 13.0-0-0 Nd7 14.e4 d4 15.h5 Bh7 16.Rdg1 f6 17.Nh4 Nb6 18.Nf5 (18.g5 fg5 19.Nf5 Bf5 20.ef5 Bc3–+) 18...Bf5 19.gf5 Na4 20.Nc4 Bc3 21.Bc3 Nc3 22.Qg4 Rg8 23.Qg6 (23.f4 ef4 24.e5 0-0-0–+ (24...fe5?! 25.Bg2 Qf6 26.Bc6 bc6 27.Qf3–+; 24...Ne5?! 25.Ne5 Qa3 26.Kd2–+)) 23...Kf8 24.f4 Re8 25.fe5 (25.Kb2 Na4 26.Kb3 b5 27.Ne5 Ne5 (27...fe5?! 28.Qc6 Qf7 29.Kb4=) 28.fe5 Qc5–+) 25...Ne5 26.Ne5 Qa3 (26...fe5?! 27.Kd2 Qh4 28.Rf1–/+) 27.Kd2 Re5 (27...fe5 28.f6 Nb1 29.Rb1 Qa5 30.Kd1+-) 28.Ra1 (28.Re1–+) 28...Ne4! 29.de4 Qe3 30.Kd1 Qf3 31.Kd2 Re4 32.Rae1 (32.Kc1 Qh1 33.Kb2 Qh3 34.Ra3–+) 32...Qc3 33.Kd1 d3 0–1. didaktikm123 (2125) – urdukan (2300), gameknot.com, 2014.

5.Nd4 Bg6 6.e3 (6.a3 Nf6=+) 6...Nf6 7.a3 a5 (7...Bd6 8.Bd3=+) 8.Nc3 (8.ba5 Be7=+) 8...ab4 (8...e5 9.Nf3 ab4 10.ab4 Ra1 11.Qa1=+) 9.ab4 Nbd7 10.Ba3 (10.Ra8 Qa8 11.h4 h6–/+) 10...c6 11.Bd3 (11.Nb3 Bd6–/+) 11...e5 (11...Bd3 12.cd3 e5 13.Nc2–/+) 12.Nb3 Bd3 13.cd3 Bd6 14.Nc5 Ra7 (14...Qc7 15.0-0–/+) 15.0-0 0-0 16.Qb3 (16.Qf3 b6 17.Nd7 Qd7–+ (17...Rd7?! 18.b5=)) 16...Qe7 17.Rfc1 (17.Nd7 Nd7 18.Bb2 Rfa8–/+) 17...Rfa8 (17...Rd8 18.Ne2–/+) 18.Nd7 (18.Ne2!?–/+) 18...Nd7–+ 19.Rd1 (19.Ne2 Qh4–+) 19...Qh4 20.Ra2 g5 21.Rda1 g4 22.hg4 Nf6 23.f3 b6 24.e4 b5–/+ 25.ed5 Bc7–+ 26.Ne2? Bb6 27.d4 ed4 28.d3 Nd5 29.g5 Ne3 30.Rb2 Bc7 31.f4 Ng4 (32.Rba2 Bf4–+) 0–1. Garfield85 (1845) – pierre (2040), internet, 2006.

5.e3 Bb4?? 6.Bg7 Nf6 7.Bh8 +-.

5.e3 Nd7 6.c4 dc4 7.Bc4 Ngf6 8.b5 Be7 9.0-0 0-0 10.d4 Rc8 11.Nbd2 Nb6 12.Be2 c6 13.a4 Ne4 14.Ne4 Be4 15.Nd2 Bg6 16.Qb3 cb5 17.ab5 Rc2 18.Rfd1 Qd5 19.Qd5 Nd5 20.Ba3 Ba3 21.Ra3 Nc3 22.Re1 Ra8 23.b6 a6 24.Bf3 Nd5 25.Nb3 Rc6 26.Rc1 Rb6 27.Bd5 ed5 28.Rc7 Kf8 29.Nc5 Rb1 ½–½. Snide – ZorMaster, HCL–M415 playchess.de, 2003.

5.e3 Nd7 6.c4 c6 7.Nc3 (7.cd5!? ed5 8.Be2=) 7...dc4–/+ 8.Bc4 Bb4 9.a3 (9.Qb3 Be7–/+) 9...Be7 (9...Bd6 10.d3–/+) 10.0-0 (10.e4 Bg6–/+) 10...Bg6 (10...Ngf6 11.d4–/+) 11.Ne2 (11.Be2 Qa5=+) 11...Bf6 (11...Ngf6 12.Nf4–/+) 12.d4=+ Ne7 (12...Nb6 13.Bb3=+) 13.Nf4 (13...Bf5 14.Re1=+). jammboy – smoothmovermovesagain, ChessWorld.net, 2006.

5.e3 Nf6 6.a3 a5 =.

5.e3 Nf6 6.c4 c6 7.b5 Be7 8.Nc3 0-0 (8...dc4 9.Bc4 a6 10.a4=) 9.a4 (9.Nh4 Be4=) 9...h6 (9...Bc5 10.cd5 Nd5 11.Nd5 Qd5 12.Rc1=) 10.Be2 dc4 11.Bc4 cb5 12.ab5 Nbd7 13.d4 Nb6 (13...Rc8 14.Qb3 Qb6 15.0-0=) 14.Bd3 Bd3 15.Qd3 Qc7 16.0-0 Nc4 17.Rfb1 (17.Rfc1 Nb2 18.Qe2 Qd6=) 17...Rfc8+= 18.Na4 Nd5 19.Qe2 Qd7 20.Bc1 a6 21.ba6 b5 (21...Ra6 22.Nc5 Bc5 23.Qc4+=) 22.e4 Ra6 23.Nc5 Nc3 (23...Ra1 24.Ra1 (worse is 24.Nd7 Rb1 25.Qc2 Ra1 26.ed5 Ba3–/+) 24...Bc5 25.ed5+=) 24.Qc2 Ra1 25.Ra1 Bc5 26.Qc3 Bb6 27.Bf4 Rd8 28.Rd1 Qb7 29.Qc2 e5 30.Be5 Ne5 31.Ne5 Bd4 32.Nf3 Bb6 33.Rd8 Bd8 34.Nd4 b4 35.Nb3 g6 36.Kf1 Bf6 37.Qc4= Bc3 38.Ke2 Qa8 39.g3 Qa2 40.Kf1 h5 41.h4 Kg7 42.Qd5 f6 43.Qd7 ½–½. Roldan,Antonio Jose (2025) – Kaufmann,Thorsten (1800), IECC, 1998.

5.e3 Nf6 6.Nh4 Bb4 7.Nf5 ef5 8.Qf3 g6 9.g4 Rf8=+ 10.c4 (10.a3 Bd6=+) 10...Nc6 (10...c6 11.gf5 dc4 12.Bc4=+) 11.a3 (11.gf5 dc4 12.Bc4 Na5=) 11...Ba5 (11...Bc5 12.d4 Bb6 13.gf5=) 12.gf5 dc4 (better 12...Qd6=) 13.Qf4 (13.Bc4 Qd6=) 13...Qe7 (better 13...Qd5!? 14.fg6 hg6–/+ (worse 14...fg6 15.Qc4 Rd8 16.Qd5 Nd5 17.Bg2=)) 14.Bg2= 0-0-0 (14...Rd8 15.Qc4 Rd6 16.Qb5=) 15.Qc4 (15.Bc6!? bc6 16.Qc4=) 15...Rd6= 16.a4 Rfd8 (worse 16...gf5 17.Ba3 Qe6 18.Qe6 (18.Bd6? Qc4 19.Bf8 Ne5–+) 18...fe6 19.Bd6 cd6 20.Bc6 bc6 21.Rg1+=) 17.fg6 (17.Ba3 Qe5 A) 18.Bd6? Qa1 19.0-0 Rd6–+ (19...cd6?! 20.Nc3 Qa3 21.Bc6=); B) 18.Ra2=) 17...Ne5 (better 17...hg6!? 18.Ba3 Qe6 19.Qe6 Re6=+) 18.Qb5+= Nd3 19.Kf1 (19.Ke2 Nf4 20.Kf1 Ng2 21.Qa5 Nh4=+) 19...c5 (19...Rb6 20.Qa5 Rb2 21.g7+=) 20.gh7 (20.Qa5 Ne4 21.Be4 Qe4 22.Rh2 Rg6 23.Nc3=) 20...Nh7= 21.Ra3 (21.Bg7 Bb6 22.Qc4 f6=) 21...Rb6=+ (worse 21...Nb2 22.Qa5 Ra6 23.Qc3+-) 22.Qa5 (22.Rd3?? Rb5 23.ab5 Rd3–+) 22...Rb2 23.Rd3 Rd3 24.Ke2 Rd8 (24...Rdb3 25.Rc1 Rb1 26.Rc5 Kb8 27.Re5+-) 25.Qc3 (25.Qa7!? Ng5 26.Rc1=) 25...Rb4=+ 26.Qc2 (26.Rc1 Kb8=+) 26...Nf8 (26...Nf6 27.Qf5 Kb8 28.Rc1=+) 27.Qf5 (27.Nc3 Ne6 28.Be4 Kb8=+) 27...Kb8 (27...Ne6 28.Nc3–/+) 28.Nc3=+ Ng6 29.Be4 a6 (29...Qd6 30.Rd1–/+) 30.Rd1 (30.f3 Qd6 31.Qd5 Rb2 32.Qd6 Rd6=+) 30...Rd6 (30...Nh4 31.Qh7=+) 31.Ke1 Qe5 (31...Rc4 32.Rb1 b6 33.Rb3=) 32.Qe5 Ne5 33.f4 (33.Ke2 Rh6 34.Rh1 b5=+) 33...Nc4 34.Ke2 Rh6 35.Bd5 (35.Rh1!?=+) 35...Rh3–/+ 36.Bc4 (36.Bf7 Rh2 37.Kf3 Rd2–/+) 36...Rc4–+ 37.Rg1 Rh8 (37...Rh7 38.a5 Rb4 39.Kd3–/+) 38.Rg7 Rf8 39.Kd3 Rb4 40.Kc2 (40.a5 Ka7–/+) 40...Rb6 (40...b6 41.Nd5 Ra4 42.Nb6 Ra2 43.Kc3–/+) 41.a5 Rd6 (41...Rb4 42.Nd5 Rb5 43.Nb6–/+) 42.Ne4 (42.Na4 Rfd8 43.Rf7 Rd2 44.Kb3 R8d3 45.Kc4 Re3 46.Nc5 Rb2–/+) 42...Rc6–/+ 43.Nc3 (43.f5 Rc7–/+) 43...Rg6 44.Rh7 (44.Rg6 fg6 45.Kb3 Rd8–/+) 44...Kc7 45.Kb3 (45.Rh5 Kc6–/+) 45...b5 46.ab6 Rb6 47.Kc2 (47.Kc4 Rb2–/+) 47...Re6 (47...Rg6 48.d4–/+) 48.Rh5 (48.e4 Kc6–/+) 48...c4 (48...f5 49.d3–+) 49.f5 (49.Nd5 Kb7–/+) 49...Rc6 50.e4 Kd6 51.Rh6 Kd7 52.Rh7 a5 53.Nb5 (53.d4 cd3! 54.Kd3 Rd6 55.Nd5 a4–+) 53...a4 (53...Rc5 54.Nc3–+) 54.Nd4–/+ Ra6 55.e5 (55.Ne6!? Re6 56.fe6 Ke6 57.Kc3–/+) 55...a3–+ 56.Kb1? (56.Ne6 Re6 57.fe6 Ke6 58.Rh6 Ke5–+) 56...a2 57.Ka1 Rb8 (57...Rg8!? 58.Rh1–+) 58.Rh1 Rab6 (58...Rg8 59.Nc2–+) 59.Rh7 Rb1 (59...Rb1 60.Ka2 R8b2 61.Ka3 Rd2 62.e6 Ke7 63.f6 Kf6 64.Rf7 Kg6–+) 0–1. objorn (2475) – forsetinn (2480), gameknot.com, 2016.

5.e3 Nf6 6.Nh4 Bg6 7.Ng6 hg6 8.Qe2 c6 (8...Bb4? 9.Qb5 Nbd7 10.Qb4+-) 9.a3 a5 10.b5 Nbd7 11.c4 Bd6 12.d4 Ne4 13.Nc3 Ndf6 14.Qc2 Nc3 15.Bc3 (< 15.Qc3 Ne4 16.Qc2 Qh4–/+) 15...Ne4 16.c5 Bb8 17.Bd3 Nc3 18.Qc3 Qg5 19.g3 Bg3 20.fg3 Qe3 (< 20...Qg3 21.Kd2+/–) 21.Kd1 a4 (21...Qg3 22.Qd2+=) 22.g4+/– Kf8 (22...g5 23.Kc2+/–) 23.Kc2 Qf2 24.Kb1 Qg2 25.Qe1 Rh3 26.Rh3 Qh3 27.Kc2 Kg8 28.b6 Qg4 29.Qf2 Qh3 30.Rg1 Re8 31.Qf4 Qh5 32.Rf1+- Rf8 33.Rf2 Qh6 34.Qg3 Qh1 35.Rf1 Qh6 36.Qc7 Qe3 37.Qb7 e5+= 38.Qc6 e4 39.Bb5 Qb3+= 40.Kd2 Qb2 41.Ke3 Qc3 42.Kf4 Qd2 43.Ke5 Qg5 44.Kd6 Qg3 45.Kd5 Rd8 46.Qd7 Rd7 47.Bd7 e3 48.Rb1 Qf3= 49.Kd6 Qf4 50.Kd5 f5 51.Kc4 Qe4 52.Rc1 e2= 53.Ba4 e1Q 54.Re1+/– Qe1 55.b7 Qf1 56.Kb4 Qf4 57.Kb5 Qc7 58.Bb3 Kf8= 59.Bd5 Ke7 60.Bc6 Qd8+= 61.d5 Qb8 62.d6 Ke6 63.a4 Qa7= 64.a5 g5 65.Bf3 g4=+ 66.Bc6 f4 67.a6 f3 68.Kb4 f2 69.Bg2 g3 70.Kb5 g6 71.Kb4 g5 72.Kb5 g4 73.Kb4 f1N 74.Bf1 Kd5 75.Bg2 Kd4 76.d7?? Qc5 77.Kb3 Qc4 78.Kb2 Qb4 (79.Kc1 Qc3 80.Kb1 Qb3 81.Ka1 Kc3 82.b8R Qb8 83.Bb7 Qf4 84.Ka2 Qb4 85.d8Q Qb2) 0–1. Pierred (2235) – Blueblazes (2635), Rated game, 3m + 0s, 2005.

5.e3 h6 6.c4 (6.a3 Nf6=) 6...Nf6 7.Qc2. forsetinn (2490) – objorn (2465), gameknot.com, 2016.

5.a3 a5 6.b5 c5 7.d3 Qb6 8.a4 Nbd7 9.Nbd2 e6 10.g4 Bg6 11.Bg2 Bd6 12.c4 0-0 13.cd5 ed5 14.Nh4 Bf4 15.Ng6 fg6 16.0-0 Rae8 17.e3 Be5 18.Be5 Re5 19.e4 Ne8 20.ed5 Nd6 21.Nc4 Nc4 22.dc4 Qd6 23.Qd2 Nb6 24.Qa5 Nc4 25.Qc3 Rf4 26.a5 Re2 27.a6 ba6 28.ba6 Nb6 29.a7 Na8? 30.Rae1 Re1 31.Re1 Rf8 32.Qe5 Qe5 33.Re5 Nb6 34.Re7 Rd8 1–0. marre (2135) – kingofconcentration (1630), GameColony.com, 2003.

5.e3 a5 6.b5 Ne4 7.Nc3 e6 8.Ne4 de4 9.Nd4 Bg6 10.h4 h5 11.Ne2 Qd5 12.Nf4 Qd6 (12...Qf5!?+=) 13.Ng6+/– fg6 14.Qe2 Nd7 15.Qc4 Qd5 16.Qc7 Bd6 17.c4 (17.Qc4 Ne5 18.Qa4 0-0+/–) 17...Bc7 18.cd5 ed5 19.Rc1 Bb6 20.Bg7 Rg8 21.Bc3 Rc8 22.f3 Nc5 23.Kd1 Na4 24.Ba1 Rf8?? (better is 24...Rc1 25.Kc1 Kd7+/–) 25.Rc8+- (25.Rc8 Bd8 26.fe4+-) 1–0. Fournier,Frederic (2350) – capitanbeluga (2145), Active (5/0), 2006.

5.e3 Qd6 6.a3= Nc6 7.d4 e6 8.Nbd2 Be7 9.c4 0-0 10.c5 Qd8 11.Qb3 a6 12.Bd3 Bd3 13.Qd3 Re8 14.0-0 Qc8 15.Rad1 Rb8 16.Rfe1 g6 17.e4 de4= 18.Ne4 Rd8 19.d5 Nd5=+ 20.Qc2 Bf8 21.Rd5!+/– ed5 22.Nf6 Kh8 23.Nd5 f6?? 24.Bf6+- Bg7 25.Bg7 Kg7 26.Qc3 Kh6 27.Qe3 Kg7+/– 28.Qc3 Kh6+- 29.Nf6 Rg8 30.Ng4 Qg4 31.hg4 Rge8 32.g5 Kh5 33.Re8 Re8 34.Qc4 Re1 (34...Nd4 35.Qd4 Re1 36.Kh2 Re4 37.Qe4 h6 38.g4#) 1–0. good – crafty, ICC, 1997.

5.e3 e6 6.a3 =+.

5.e3 e6 6.Nh4 Bg6 7.Ng6 hg6 8.c4 Bb4 9.Qb3 Nc6 10.a3 Be7 11.Qb7 Na5 12.Qa6 Rb8 13.Qa5 Rb2 14.Qa7 0-0 15.Qd4 Qb8 16.Nc3 c5 17.Qd3 Rd8 18.Nb5 dc4 19.Qc4 Rdd2 20.Nc3 Rf2 21.Ne2 Rfe2! 22.Be2 Qg3 23.Kd1 Nd5 24.Kc1 Bf6 25.Bf3 Qf2 26.Qd3 Ne3 27.Be2 Re2 28.Qd2 Rd2 29.Ra2 Ra2 30.Rd1 Qc2# 0–1. Pierred (2105) – Prashanthdk (2400), Rated game, 1m + 2s, 2005.