3…Qg5 4.Nf3 Qg6 5.g3 b6 (5...Be6!?=) 6.Bg2+= Bb7?? (6...c6 7.b5 Ne7 8.Nc3+=) 7.e3?? (better is 7.Ne5 Bg2 8.Ng6 hg6 9.Rg1 Rh2 10.Qb3+-) 7...Nd7? (7...c6 8.0-0=) 8.0-0 (8.Nh4 Bg2 9.Ng6 (worse is 9.Ng2 Qe4 10.0-0 Qc4–/+) 9...hg6 10.Rg1 Rh2 11.Nc3+-) 8...h5?? (better is 8...e4 9.Nh4 Qe6+=) 9.Nh4+- Qe6 10.Bb7 Rb8 11.Bd5 Qh3 12.Bg2 Qe6 13.d3 Be7 14.Nf3 g5 15.Nbd2 g4 16.Nh4 Bh4 17.gh4 Qe7 18.f4 Qh4 19.fe5 Ne5 20.Be5 de5 21.Ne4 Ne7 22.Ng3 Qg5 23.e4 h4 24.Nf5 Nf5 25.Rf5 Qe3 26.Kh1 g3? 27.h3 Ke7 28.Qf3 Qf3 29.Rf3 Rbd8 30.Raf1 Rhf8 31.Kg1 f6 32.Rd1 Rd4 33.a3 Rfd8+/- 34.Bf1 a5 35.Kg2 ab4 36.ab4 Ra8 37.Rd2 Ra7? 38.Be2 Ra1 39.Rf5+- Rb1 40.b5 Re1 41.Rh5 1–0. Fournier,Frederic (1650) – isaba, Active, 2006.

4.cb5+/- Bd7 5.a4 a6 6.ba6 Ra6 7.e3 Ra4?? (better is 7...Ra8+/-) 8.Ra4+- Ba4 9.Qa4 Nc6 (9...Nd7+-) 10.Bb5 Qd7 (10...Nge7 11.Nc3 Qc8 12.Bc6 Nc6 13.Qc6 Qd7+-) 11.Bc6 Qc6 12.Qc6 (12.Qc6 Kd8 13.Qa8 Ke7 14.Qc8+-) 1–0. Fournier,Frederic – JavaGod, Active, 2008.

4.cb5 Bf5 5.Nc3 Nf6 6.a4 (6.d4 Nbd7+-) 6...Be7 7.e3 Qd7 (7...d5 8.Nf3+=) 8.Be2 0-0 9.Nf3 c6 10.Nh4 Bg6 (10...Be6!?+=) 11.0-0 Kh8 (11...Bf5 12.Nf5 Qf5 13.d4+-) 12.Ng6+- fg6 13.d4 Qc7 14.d5 c5 15.Qc2?? (15.bc5 dc5 16.d6 Bd6+-) 15...Nbd7?? (15...cb4 16.e4–/+) 16.f4?? (16.bc5 Nc5 17.Rac1 Rac8+-) 16...Rae8?? (16...cb4 17.Rac1 bc3 18.Qc3 Qc3 19.Rc3 Nd5 20.Rd3-+) 17.f5?? (17.bc5 dc5 18.f5 gf5 19.Rf5 e4+-) 17...g5?? (17...cb4!? 18.fg6 Nd5 19.gh7 bc3 20.Bc1-+) 18.Rf3?? (better 18.bc5 Nc5 19.Rac1+-) 18...g4 (18...cb4 19.e4-+) 19.Rg3 (19.b6 Qc8 20.b7 Qb7 21.Rg3 cb4 22.Ne4-+) 19...h5?? (19...cb4 20.e4-+) 20.Rf1?? (better 20.bc5 Nc5 21.Bd1+=) 20...h4 (20...cb4 21.e4-+) 21.Rg4 (21.b6!? Nb6 22.Nb5-+) 21...Ng4 22.Bg4 Nf6 1–0. Dziedzic,Ferdynand (1885) – Turek,Piotr, 5th The Akiba Rubinstein–International, 2009.

4.Nc3 f5 5.d4 Be6 6.e3 Nd7 7.d5 Bf7 8.Nb5 c6? (better is 8...a5+=) 9.dc6+- bc6 10.Nd6 Ke7?? (better is 10...Bd6 11.Qd6 Ngf6+-) 11.Nf5 Ke8 12.Ng7 Ke7 13.Nf5 Ke8 14.Nd6 (14.Bh8? Bb4 15.Qd2 Bd2 16.Kd2 Qa5 17.Bc3 Qf5-+) 14...Bd6 15.Qd6 Rb8 (15...Ngf6+-) 16.Bh8 c5 17.a3 1–0. pcmvr (2830) – onamb (1800), net–chess.com, 2014.

4.Nc3 Nf6 5.d4 ed3 (5...Be7 6.a3=+ (6.Nh3 0-0 7.Nf4 Bf5) 6...0-0 7.Nh3 Nc6) 6.ed3 (6.e4 Nc6 (6...Be7 7.Nf3 0-0) 7.a3 (7.Nf3 Be7) 7...a5=; 6.Nf3 Nc6 7.e4 Be7) 6...Bf5 (6...Be7 7.Nf3=+ 0-0) 7.Nf3 (7.Qf3 Bc8= (7...Bd7=)) 7...h6 (7...Be7 8.Be2=; 7...Nc6+=) 8.Be2+= Nc6 (8...d5 9.Nd4 Bd7 10.a3+=) 9.a3 (9.b5 Ne5+=) 9...Be7 (9...Qd7 10.b5 Ne5 11.0-0+=) 10.0-0 (10.b5 Ne5+=) 10...0-0 11.Nh4 (11.Re1+=) 11...Bg6 (11...Be6!?+=) 12.Ng6+- fg6 13.f4 (13.d4!?+-) 13...Nd4 14.Ne4 Ne2 (14...Nf5 15.Qb3+=) 15.Qe2 Ne4 (15...a5 16.Rae1+=) 16.Qe4+- Kh7 (16...Bf6 17.Bf6 Qf6 18.Qb7 Qd4 19.Kh1 Qd3 20.Qc7+-) 17.Qb7 c5 (17...Bf6 18.d4+-) 18.Rf3 (18.Rae1 Bf6 19.Bf6 Qf6+-) 18...cb4 (18...Bf6 19.Bf6 Qf6 20.Rb1+-) 19.ab4 Qb6? (19...Bf6!? 20.Bf6 Qf6+-) 20.Qb6+- ab6 21.Ra8 Ra8 22.Bd4 (22.Re3 Ra2 23.Bd4 Bh4+-) 22...Rb8 (22...d5 23.b5 dc4 24.dc4+- (24.Bb6?! Rb8=)) 23.Re3 Bf6 24.Bf6 gf6 25.Re7 (25.b5 d5 26.cd5 Rd8+-) 25...Kg8 26.b5 Kf8 (better 26...d5+-) 27.Re6 Kf7 (27...Rd8 28.Rf6 Kg7 29.Re6+-) 28.Rd6 Ke7 29.Rc6 g5 (29...Rd8 30.Rb6 Rd3 31.c5+-) 30.fg5 (30.f5 Rd8+-) 30...hg5 31.d4 f5 32.Kf2 Kd7 33.Rf6 (33.d5 Ra8+-) 33...f4 (33...Rc8 34.Rf5 Rc4 35.Rd5 Kc7 36.Kf3+-) 34.Rf5 (34.Kf3 Ke7 35.Rc6 Rd8+-) 34...Rg8 (34...Rc8 35.c5+-) 35.Kf3 Ke6 (35...Kc7 36.Kg4+-) 36.Kg4 Rg6 (36...Rd8 37.d5 Kd6 38.Rf6 Kc5 39.Rc6 Kd4 40.Kg5 (worse 40.Rb6 Kc4 41.Kg5 Kc5+-) 40...Rg8 41.Kf4 Rg2 42.d6 Rf2 43.Kg3+-) 37.Rg5 (37.Rg5 Rh6 38.h4+-) 1–0. Wall,Bill – Hasenfuss, internet, 2004.

4.Nc3 Nf6 5.g3 b6 (5...Nc6!?= 6.Bg2 Ne5 7.Qb3 Bf5 8.Nh3 Be6 9.Ng5; 5...Be7 A) 6.Bg2 Nc6 (6...0-0 7.Ne4 Nc6 8.b5 Ne5 9.Qc2) 7.Ne4 0-0 8.b5 Na5 9.Qc2; B) 6.Qb1 Nc6 (6...0-0 7.Ne4 Nc6 8.b5 Na5 9.e3) 7.Ne4 0-0 8.b5 Na5 9.e3; 5...a5 6.Qc2 (6.Bg2 Bf5 7.Qc2 Qe7 8.Qa4 Nbd7 9.Bh3) 6...Nc6 7.Bg2 Nb4 8.Qb1 Be6 9.a3) 6.Bg2+= Bb7 7.d3 (7.Nh3 a5 8.b5 Nbd7 9.0-0) 7...d5 (7...a5 8.b5 Nbd7 9.Nh3) 8.cd5 ed3 (8...Nd5 9.Nd5) 9.Qd3 Bb4? (better 9...a6 10.a3 Bd6+-) 10.Qb5+- (10.Qb5 c6 11.Qb4+-) 1–0. Woschkat,Karl_Heinz – Au,Klaus_Dieter, CiF, 1993.

4.e3 b6 5.Qa4 (5.d3 Nf6+=) 5...Bd7= 6.b5 Nf6 7.h3 (7.Qc2 Bf5=) 7...a6 8.Ne2 d5 (8...c6 9.Nbc3=) 9.Nec3 c6 10.cd5 Nd5 (10...cd5 11.d3 Qe7 12.de4 de4 13.Nd2+=) 11.Qe4 Be6 (11...Ne7!?+=) 12.bc6+- Bd6?? (better 12...Nc6 13.Nd5 Qd5 14.Qd5 Bd5+-) 13.Nd5+- 0-0 (13...Nc6 14.Bg7 Be5 15.Nf6 Ke7 16.d4 Bf6 17.Bh8 Bh8 18.Qc6+-) 14.Qd4 (better 14.Bd3 f5 15.Qe6 Kh8 16.Bf5 Ra7+-) 14...f6 (14...Qg5 15.Nb6 Bc5 16.Qg7 Qg7 17.Bg7 Bb6 18.Bf8 Kf8 19.Bd3+-) 15.Bc4 (15.Qe4 Be5 16.Nf4 Bf7 17.Be5 fe5+-) 15...Nc6 (15...Be5 16.c7 Bd4 17.cd8Q (17.cd8B?! Bb2 18.Be7 Re8+-) 17...Rd8 18.Bd4 Bd5 19.Bb6+-) 16.Qh4 (better 16.Qg4! Kf7 17.Nf6 gf6 18.Be6 Ke8 19.Qh5 Ke7+-) 16...g5 (16...Re8+-) 17.Nf6! Rf6 Decoy to f6 (17...Qf6 18.Bf6) 18.Be6 (better 18.Qg5 Kf7 19.Qh5 Kg8 20.Qg4 Kf7 21.Be6 Re6 22.Qf3 Kg8 23.Qc6 Rc8+-) 18...Kf8?? (better 18...Re6 19.Qc4 Qe8+-) 19.Bf6 Qf6 20.Qg4 (20.Qh7!? Ne7 21.Bb3 Rc8+-) 20...Ne5 (20...Re8+-) 21.Qf5 Ke7 22.Nc3 (better 22.Qf6 Kf6 23.Bb3 b5+-) 22...Nd3 (22...Qe6 23.Qh7 Nf7+-) 23.Ke2 (23.Qd3 Qe6 24.Qh7 Ke8+-) 23...Qf5 (23...Nf4 24.ef4 Qe6 25.Qe6 Ke6 26.fg5+-) 24.Bf5 Nc5 25.Nd5 Kd8 (25...Kf7 26.Nb6 Rh8 27.h4 gh4 28.d4+-) 26.Nb6 Ra7 (26...Rb8 27.Rab1 Bc7 28.Nd5+-) 27.Nc8 Rf7 (27...Rd7 28.d4 Ne4 29.Rhc1+-) 28.Nd6 Rf6 29.Bh7 (better 29.Rhc1 Nd7 30.Nb7 Ke7+-) 29...Rd6 30.Bf5 Rf6 31.g4 (31.g4 Nb7 32.d4+-) 1–0. MARYMARY – Haech, ChessWorld.net, 2020.

4.d3 b6 5.e4 c5 6.Nf3 Nf6 7.Be2 a6 8.Nc3 Nc6 9.a3 Qb7 10.b5 ab5= 11.Nb5 Be7 12.h3 0-0 13.Nh2 Ne8 14.Qd2 Nd4 15.Nd4= cd4 16.f4 b5 17.0-0 bc4 18.dc4 Nf6 19.Bf3 Ne4 20.Be4 Qe4 21.Rae1 Qc6 22.fe5 Qc4 23.ed6 Bd6–/+ 24.Rc1 Qd5 25.Qd4 Qd4 26.Bd4 Ba3 27.Rc3? Bb2-+ 28.Rc4 Ba6 29.Rb4 Bd4 30.Rd4 Bf1 31.Kf1 Rfb8 32.Kf2 h6 33.Nf3 Ra2 34.Kg3 Rbb2 35.Rd8 Kh7 36.Nh4 g5 37.Nf5 Rg2 38.Kf3 Rgf2 39.Ke4 Ra4 40.Ke5 Ra5 41.Ke4 Raf5 42.Rd7 h5 43.Ra7 g4 44.hg4 hg4 45.Ra1 0–1. euforia (1695) – marga, internet, 2007.

4.Nf3 Be6 5.e3 Nd7 6.Be2 0-0-0 7.0-0 Ngf6 8.d4 e4 9.d5 ef3 10.Bf3?? Bf5-+ 11.Qa4 a6 12.b5 Nb6 13.Qb3 a5 14.Bd4 Qd7 15.Qc3=+ Nc4?? 16.Qc4+- b6? 17.Bb6 Be4 18.Be4 Ne4 19.Ba5 Nc5 20.Nc3 g6 21.b6 Kb7 22.bc7 Rc8 23.Ne4 Bg7 24.Nc5 dc5 25.Rfb1 Ka8 26.Qa6 1–0. PassedPawn – The Enchanter, ChessWorld.net, 2005.

4.b5 c6 5.a4 Bf5 6.e3 Nd7 7.Nf3 Be7 8.Nc3 Qg6 9.d4 h5 (9...e4 10.Nd2=) 10.Ne2 (10.a5 a6+=) 10...h4= 11.de5 (11.h3 Bf6=) 11...de5 12.Ne5?? (12.Qd2 f6 13.bc6 bc6 14.Qa5=+) 12...Ne5?? (better 12...Bb4 13.Nc3 Ne5-+) 13.Be5+= Rd8 14.Qb3 Nf6 15.bc6 bc6 16.Qb7 (16.Nf4!? Qg5 17.Bc7+/-) 16...Nd7 17.Nf4 Qg5 18.Bc3 (18.Qc6? Bb4 19.Ke2 Bg4 20.f3 Qe5-+) 18...0-0 (better 18...Bf6!? 19.Qb2 Bc3 20.Qc3 h3+=) 19.Qc6+/- Nf6 20.Qb5 (20.Rc1 Rfe8 21.Be2 Bd6=) 20...Ne4+/- 21.Bd4?? (better 21.Be5+/-) 21...a6 22.Qa5 (22.Qa6) 22...Rb8?? (22...Rd4 23.Nd5 Rd5 24.cd5 Rb8-+) 23.Ke2?? (23.Nd5 Bc8 24.Ne7 Qe7+-) 23...Nf6 (better 23...Bg4 24.f3 Qa5-+) 24.Qe5 (24.Qa6 Rfd8 25.Qa7+/-) 24...Bg4?? (better 24...Ng4 25.Qc7 Rfc8+=) 25.f3+- Bf3 (25...Qe5 26.Be5 Bd7 27.Bb8 Rb8 28.a5+-) 26.gf3 (26.Kf3 Qg4 27.Kf2 Bd6+-) 26...Qe5 27.Be5 Nd7 (27...Rb4 28.Rg1 Rd8 29.Kf2+-) 28.Bb8 f6 (28...Rb8 29.Ra2 Rb3+-) 29.Rd1 (better 29.Ba7 Re8+-) 29...Nb8 30.Rd2 (better 30.Ng6 Nc6 31.Nf8 Kf8+-) 30...Nc6 31.Bh3 Ne5 32.Be6 Kh8 (32...Kh7 33.Nd5 Bc5 34.f4+-) 33.Nd5 Nc4 (33...Bd8+-) 34.Ne7 Ne3 35.Kf2 (35.Ng6 Kh7 36.Nf8 Kh6 37.Rg1 h3 38.Ke3 f5 39.Rg6 Kh5 40.Rd5 Kh4 41.Rf5 a5 42.Rg4) 35...Nf5 36.Ng6 Kh7 37.Nf8 Kh6 38.Bf5 g6 (38...Kg5 39.Rg1 Kh5 40.Bg6 Kh6 41.Rd4 f5 42.Rh4) 39.f4 g5 (39...Kg7 40.Rd7 Kf8 41.Rc1 gf5 42.Rc8) 40.Rg1 (40.Rg1 g4 41.Rd7 g3 42.Ke3 h3 43.Rh7; 40.Rd7 gf4 41.Rg1 f3 42.Rh7) 1-0. ClayPigeons (2195) - Tacna34Peru (2165), Rated Bullet game, lichess.org, 2021.

4.Nf3 (--> 1.b4 e5 2.Bb2 Qf6 3.Nf3 d6 4.c4).

4.a3 Bg7 5.e3 Nc6 6.Nf3 Be6 7.d3 Nf6 (7...g4 8.Nfd2=) 8.Be2 (8.Ng5 Bf5+/-) 8...0-0 (better is 8...h6!?=) 9.Ng5+/- b6? (better is 9...Bf5!?+/-) 10.Ne6 fe6 11.0-0 d5 (11...Ne7!?+-) 12.cd5 ed5 13.Nc3 (13.Qc2!? Qe8+-) 13...a5 14.b5 Ne7 15.a4 c6 16.Ba3 cb5 17.Nb5 Rf7 18.Nd6 Rf8 19.Qb3 Rb8 20.e4 Kh8 21.ed5 Nfd5 22.Bf3 Nb4? 23.Bb4 ab4 24.Nc4 e4+/- 25.Be4 Ba1 26.Ra1 Qd4 27.Rd1?? Qf2 28.Kh1 Qf1!! 29.Rf1 Rf1 0–1. Fournier,Frederic (1950) – amande (1925), Active (5/1), 2005.

4.e3 f5 (better 4...Nf6!?=) 5.Qh5+- Kd7 6.Qf7 (6.d4 Nf6 7.Qg5 Ke8+-) 6...Ne7 (6...Qe7 7.Qf5 Kd8 8.Qc2+-) 7.Nf3 (better 7.Bd3 Qe8 8.Bf5 Kd8 9.Qe8 Ke8 10.Bc8 Nc8 11.Nc3+-) 7...h6? (7...Qe8 8.Qf6 Rg8 9.Ng5+=) 8.Bd3 (better 8.Be5!? Rg8 9.Bd3+-) 8...Qe8+- 9.Bf5 Kd8 10.Qe8 Ke8 11.Be4 g4 12.Nh4 a5 13.b5 c6 (13...Nd7 14.d4+-) 14.Nc3 a4 (14...Bg7 15.Ba3 Bf6 16.Ng6 Ng6 17.Bg6 Ke7 18.d3+-) 15.Ba3+- cb5? (better 15...c5+-) 16.Nb5 (16.Bd6?! bc4 17.Be5 Rg8+-) 16...Na6 (16...Kd7 17.Nd6 Rg8 18.Rb1+-) 17.Nd6 Kd7 18.Bf5 (better 18.Nf7 Rg8 19.Ne5 Ke8 20.d4+-) 18...Nf5 19.Nhf5 Bd6 (better 19...Kc6 20.Nc8 Ba3 21.Nce7 Be7 22.Ne7 Kd6+-) 20.Nd6 (20.Bd6?! Kc6 21.Be5 Bf5 22.Bh8 Rh8+-) 20...b6 (20...Rf8 21.Rb1+-) 21.0-0 (21.Nf7 Re8+-) 21...Nc5 (21...Rf8 22.Rab1 Rb8 23.f4 ef4 24.Rf4 Rf4 25.ef4+-) 22.Nb5 (better 22.Nf7!? Re8 23.Nh6 Kc7+-) 22...Nd3 23.Rfd1?? (23.f3 g3+-) 23...e4? (23...Kc6 24.Nd6 Be6 25.e4=) 24.g3 (24.Nd6 Ba6+-) 24...Ne5? (24...Bb7 25.Rab1+=) 25.Nd6 (25.Bb2 Re8 26.Be5 Re5+-) 25...h5 (25...Rd8+-) 26.d4 (better 26.Rab1+-) 26...Nf3?? Black plans h4 (better 26...ed3 27.Nb5 Rd8= (worse 27...Nc4 28.Rd3 Kc6 29.Nd4 Kd7 30.Rb1+-)) 27.Kg2+- h4 (27...Rh6 28.Ne4 Ba6 29.c5+-) 28.h3 (better 28.Ne4!? hg3 29.Kg3 Kd8+-) 28...gh3 29.Kh3 hg3? (29...Kc7 30.Kg2 h3 31.Kh1+-) 30.Kg3 Rg8? (better 30...Bb7 31.Nf5 Rag8 32.Kf4 Ng5+-) 31.Kf4 Ng5 32.Ne4 (better 32.Rh1 Kd8+-) 32...Ne6 (32...Ne4 33.Ke4 Ba6+-) 33.Ke5 White prepares c5 33...Ra5 (33...Kd8 34.f4+-) 34.d5 Kc7 35.Bd6 Kd8 36.c5 (better 36.Bb4 Nc5 37.Nc5 Rg5 38.Kd6 Rc5+-) 36...bc5 (36...Nc5 37.Bc5 bc5+-) 37.de6 c4 (37...Re8 38.Bc5 Kc7 39.Rd6+-) 38.Bc5 (better 38.Kf6!? Ke8 39.Bc7 Rf8 40.Kg7 Raf5 41.Rd8 Ke7 42.Rf8 Rf8 43.Bd6 Ke6 44.Bf8 Kd5 45.Nc3 Kc6 46.Na4 Bg4+-) 38...Kc7 39.Kf6 (better 39.Rd5 Kc6+-) 39...Ra6 (39...Be6 40.Rab1 Rc5 41.Nc5+- (41.Ke6?! Re8 42.Kf6 Re4+=)) 40.Bd6 Kd8 (40...Kb7+-) 41.Bc5 (better 41.Rac1 Rh8 42.Kg7 Be6 43.Kh8 Rc6+-) 41...Kc7 42.Nd6 (42.Rd6 Rc6 43.Bb4 Rd6 44.Nd6 Rf8 45.Ke5 Rh8+-) 42...Rf8 (42...Ra5 43.Bb6! Kb6 44.Nc4 Ka6 45.Rd6 Kb5 46.Na5 Be6 47.Nb7+-) 43.Nf7 (better 43.Ke5 Rh8 44.e7 Bd7 45.Nc4 Rh5 46.Kd4 Rc6+-) 43...Re6 44.Kg7 (44.Kg7 Rfe8 45.Rab1+-) 1–0. MARYMARY – belisario, ChessWorld.net, 2016.

4.Nc3 f5 5.e3 Be7 6.Be2 (6.Nd5 0-0=) 6...0-0 7.Nf3 (7.d4 ed4 8.ed4 c5=) 7...Be6 (7...e4 8.Nd4=) 8.d4 e4 (8...a5 9.b5 Nd7 10.0-0+=) 9.Nd2 g5 (9...c6 10.d5 Bf7 11.0-0=) 10.d5 (10.0-0 Bf6+-) 10...Bc8 (10...Bd7 11.0-0+=) 11.Qc2 (11.0-0 Bf6+-) 11...Na6 (11...a5 12.ba5 Bf6 13.Nb3+=) 12.a3 Bf6 13.g3 (13.0-0 Qe7+-) 13...Nb8 (13...Qe7 14.0-0+=) 14.0-0-0 (14.g4 Ng4 15.Bg4 fg4 16.Nce4 Bb2 17.Qb2 Nd7=) 14...a5= 15.ba5 (15.b5 Qe7=) 15...Ra5=+ 16.Nb3 Ra8 17.h4 (17.Kd2 Na6=+) 17...g4 18.Nb5 Nf7 (18...Nd7 19.Kd2=+) 19.N5d4 (19.Bf6!? Qf6 20.Nc7+=) 19...h5 (19...Na6 20.Kd2=+) 20.c5 Na6 (20...dc5 21.Nc5 Qe7 22.Nde6 Be6 23.Ne6=) 21.Ne6 (21.c6 b6=) 21...Be6=+ 22.de6 Ne5 23.cd6 (23.Qd2 Qc8–/+) 23...cd6–/+ 24.Kb1 Qe7 (24...Qb6 25.Rc1–/+) 25.Nd4 (better 25.Qd2 Rad8 26.Nd4–/+) 25...Rac8 (better 25...Bg7!?–/+) 26.Nf5+= Attacks the backward pawn on d6 26...Qe6? (better 26...Qh7!? 27.Qe4 Nc5+=) 27.Qe4+- Rc6 (better 27...Rcd8!? 28.Qd5 Qd5 29.Rd5 Bh8 30.Nd6 Rf2 31.Be5 Be5 32.Re5 Rd6 33.Bc4 Kf8 34.Rh5 Nc7+-) 28.Nd4 Qe7 (28...d5 29.Qg2 Qd7 30.Nc6 Nc6 31.Qd5 Qd5 32.Rd5 Bb2 33.Kb2 Rf2 34.Rg5 Kh7 35.Rh5 Kg7+-) 29.Nc6 Nc6 (29...bc6 30.Ba6 Rb8 31.Rd4+-) 30.Qd5 (30.Qg6 Qg7 31.Qh5 Qh7 32.Qh7 Kh7+-) 30...Kg7 (30...Qf7 31.Qf7 Rf7 32.Bc4 Bb2 33.Kb2+-) 31.Ba6 (better 31.Qg5! Kh8 32.Qh5 Qh7 33.Qh7 Kh7+-) 31...Bb2 32.Kb2 Rf2 33.Rd2 (better 33.Kb1 Qf6 34.Qg5 Qg5 35.hg5 ba6 36.Rd6+-) 33...Rd2+- 34.Qd2 ba6 35.Qc3 (35.Qd5 Ne5+-) 35...Ne5+- 36.Rd1 (36.Rf1 Kh7+-) 36...Qb7 (36...Qf6 37.Kc1+-) 37.Kc1 Qb6 38.Qd4 (better 38.Rd5!?+-) 38...Qb3+= 39.Qd6 (39.Kd2!?+=) 39…Qc3= (39...Qe3 40.Kc2 Qe4 41.Kb3 Qe3 42.Ka2+-) ½–½. jaddwarrior (2060) – Smarty Pants (2010), ChessWorld.net, 2015.

4.Nc3 f5 5.e3 Be7 6.Nf3 (6.Nd5 0-0=) 6...0-0 7.Be2 (7.Nd5 a5=) 7...Ng4 (7...e4 8.Nd4=) 8.h3 (8.d4 a5=) 8...Nh6 (8...Nf6 9.d3=) 9.d4 e4 10.Nd2 Nd7 (10...c5 11.a3=) 11.c5 (11.0-0 a5+=) 11...Nf6 (11...a5 12.Qa4=) 12.Nc4 (12.0-0 Be6=) 12...Be6 (12...b6 13.cd6 cd6 14.d5+=) 13.Na5 (13.d5 Bf7 14.cd6 Bd6=) 13...Rb8 (13...dc5 14.dc5 Qe8 15.Nb7+=) 14.a3 (14.c6 b6 15.Nb7 Qe8+=) 14...d5 (14...c6 15.0-0=) 15.b5 (15.c6 b6 16.Nb7 Qe8=) 15...Qe8 16.Qc2 (16.0-0 Qg6 17.Kh1 Nf7=) 16...Nh5 (16...Qg6 17.Bf1=) 17.g3 (17.c6 f4 18.Bc1 b6=) 17...g5 (17...Nf6 18.Rb1=) 18.Na4 (18.c6 b6 19.Nb7 Nf6+=) 18...Qf7 (18...f4 19.gf4 gf4 20.Rg1 Kh8 21.c6=+) 19.0-0-0 (19.c6 b6 20.Nb3 Nf6=) 19...Rfc8 (19...Nf6 20.c6 b6 21.Nb3=) 20.Kb1 (20.c6 b6 21.Nb7 Nf6=) 20...Ng7 (20...Bd7 21.Nc4 Bb5 22.Ne5+=) 21.f3 (21.c6 b6 22.Nb3 Ra8=) 21...c6 (21...Nh5 22.Rdg1=) 22.b6 ab6 (22...ef3 23.Bf3 Re8 24.ba7=) 23.Nb6 Re8 24.g4 (24.f4 g4=) 24...ef3 25.Bf3 Bd8 (25...fg4 26.Bg4 Bd8 27.Rdf1=+) 26.Qb3 (26.Nb3 fg4 27.hg4 Qf3-+) 26...Qg6 (26...Bb6 27.Qb6 fg4 28.Bg4 Bg4 29.hg4 Ng4 30.Rdg1-+) 27.Qc2? (27.Kc1!?=+) 27...Bb6 (27...fg4 28.Qg6 hg6 29.Bg2-+) 28.cb6–/+ Bc8 (28...fg4 29.Qg6 hg6 30.hg4 Ng4 31.Rdg1 Bf5 32.Ka2 Ne3 33.Rg5–/+) 29.Rde1 Ra8 (29...fg4 30.Qg6 hg6 31.hg4 Ng4 32.Bg4 Bg4 33.Rhg1 Bf5 34.Kc1–/+) 30.Bc3 (30.Nb3 Ra6–/+) 30...Ra6 31.Bb4 (31.Kc1 Rb6 32.Rhg1 Qf6–/+) 31...Rb6 32.Ka1 (32.Bg2 fg4 33.Qg6 hg6 34.hg4 Ng4-+) 32...Qf6 (better 32...fg4!? 33.Qg6 hg6 34.hg4 Bg4 35.Bd5 cd5 36.Rh6 Nh5-+) 33.Rhf1 Ra6 34.e4? (better 34.Nb3–/+) 34...Qd4-+ (34...de4?! 35.Be2 b5 36.gf5 Qd4 37.Bc3-+) 35.Bc3 (35.Kb1 Qb6 (35...fe4?! 36.Be4 de4 37.Re4-+) 36.Nb3 fe4-+) 35...Qb6 (better 35...Qc5!? 36.Qb2 fg4 37.Bd1 Ra5 38.Bb4-+) 36.ed5 (36.ef5 Ra5 37.Re8 Ne8 38.Ba5 Qa5-+) 36...Re1 37.Re1 (37.Be1 Ra5 38.Ba5 Qa5-+) 37...fg4 (37...Ra5 38.Qc1 Nf7 39.Ba5 Qa5 40.dc6 bc6 41.Bc6 fg4 42.Bd5-+) 38.hg4 (better 38.Nc4 Qd8 39.hg4–/+) 38...Ng4?? (better 38...Ra5 39.Ba5 Qa5-+) 39.Qd2 (39.Be4 cd5 40.Bh7 Kf7 41.Rf1 Ke8+-) 39...h6?? (39...Qd8 40.d6 Ra5 41.Ba5 Qf6 42.Qc3 Qd6=) 40.dc6+- bc6 41.Bc6?? (better 41.Re7 Qg1 42.Bd1+-) 41...Ra5–/+ 42.Ba5? (better 42.Qa2 Kh7 43.Re7 Qg1 44.Qb1 Qb1 45.Kb1 Ra3 46.Rg7 Kh8 47.Bb2 Bf5 48.Kc1=+) 42...Qc6-+ 43.Bc3 Be6 44.Qd4 Qd7?? (better 44...Nf5 45.Qh8 Kf7 46.Qh7 Ke8 47.Qh8 Kd7 48.Qh7 Kc8 49.Qh8 Kb7 50.Rb1 Ka6-+) 45.Qg7 (45.Qd7 Bd7 46.Re7 Nf5 47.Rd7 Nge3+=) 45...Qg7= 46.Bg7 Bd5 (46...Kg7 47.Re6 Nf2 48.a4+-) 47.Bh6 (47.Re7!?+=) 47...Nh6= 48.Re5 Bf3 49.Rg5 Kf7 50.a4 Ke7 (50...Kf6 51.Rg1 Be2 52.Re1=) 51.Kb2 (51.a5 Kf6 52.Rb5 Ke7+=) 51...Kd7 (51...Kf6 52.Rb5=) 52.a5+= Kc7 (52...Be4 53.a6+=) 53.Rg6 (53.Kc3 Kb8+=) 53...Ng4 54.Kb3 (54.Rg7 Kc6+=) 54...Kb7 55.Kb4 (55.Kc3 Nf2=) 55...Ne5 56.Rf6 Bh1 57.Rf5 Nc6 58.Ka4 Na7 (58...Nd4 59.Rf6=) 59.Rf7 (59.Rf6 Nc6=) 59...Ka6 60.Rf6 Kb7 (60...Nc6!?=) 61.a6+= Kb8 62.Ka5 Nc8 63.Rf8 Kc7 (63...Bd5 64.Re8+=) 64.Rf7 (64.Rf1 Bd5+=) 64...Kb8 65.Rf8 Kc7 66.Rc8 (66.Rf1!? Be4 67.Re1+=) 66...Kc8= 67.a7 Kb7 68.a8Q Ka8 69.Ka6 ½–½. jaddwarrior (2080) – Smarty Pants (2030), ChessWorld.net, 2015.

4.d3 f5 5.g3 (5.Nc3 Be7=) 5...Be7 (5...d5 6.a3=+) 6.Bg2 0-0 7.Nf3 Be6 8.Nbd2 (8.0-0 c6=) 8...Nd7 9.Qb3 (9.0-0=) 9...g5 (9...b5 10.0-0=) 10.0-0-0 (10.h4!? g4 11.Ng5 Bg5 12.hg5 Qg5 13.Bb7+-) 10...b5 (10...c6 11.h4 g4 12.Ng5 Bg5 13.hg5 Qg5 14.Rh2=+) 11.Qc2 (11.h4 Ng4 12.Rdf1 gh4 13.Nh4 bc4 14.dc4 Rb8=) 11...a5 (11...Rb8 12.c5–/+) 12.ba5 (12.h4 gh4 13.Nh4=+ (worse 13.cb5 ab4 14.Nc4 Ra2–/+)) 12...Ra5–/+ 13.cb5 (13.Kb1 Ra7–/+) 13...Rb5 (13...Ra2 14.h4 g4 15.Ng5 Bg5 16.hg5–/+) 14.Kb1 (14.h3 Bf6–/+) 14...Qa8 15.Nb3 (better 15.Nc4 c6 16.h4–/+) 15...Nc5?? (better 15...Rfb8 16.Nfd4 Bb3 17.ab3 Qg2 18.Nb5 Rb5 19.Qc7 Qb7 20.Qb7 Rb7–/+) 16.Nfd4= Bb3 (better 16...Qa2 17.Ka2 ed4=+) 17.Ba8?? (better 17.ab3 Qg2 18.Nb5=+) 17...Bc2-+ 18.Nc2?? (better 18.Kc2 ed4 19.Bd5 Kg7 20.Bd4 Bf6 21.Bc4-+) 18…Ra8 (18...Ra8 19.Na1 Rab8-+) 0–1. jaddwarrior (1935) – Smarty Pants (2010), ChessWorld.net, 2015.

4.d3 Nf5 5.e4 Nh4 6.Nc3=.

4.a3 ab4 5.ab4 Ra1 6.Ba1 Nc6 7.b5 Nce7 8.e3 f5 (8...Nf6 9.Nf3=) 9.d4 Nf6 (9...Ng6 10.h4 h5 11.de5 de5 12.Qd8 Kd8 13.Nf3=) 10.de5+= Ne4 (10...de5!? 11.Be5 Ng6 12.Qd8 Kd8+=) 11.ed6+/- cd6 12.Bd3 (12.Nd2!?+/-) 12...Qa5+= 13.Nd2?? (better 13.Bc3! Nc3 14.Qd2+/-) 13...Nd2-+ 14.Qd2 Qa1 15.Ke2 (15.Qd1 Qa3-+) 15...g6 (15...Be6 16.Qd1 Qa2 17.Qd2 Bc4 18.Qa2 Ba2 19.Nh3-+) 16.h4 (16.Qd1 Qa3-+) 16...Bg7 (16...Be6 17.h5 Bg7 18.hg6 Ng6 19.Qd1 Qd1 20.Kd1-+) 17.h5 (17.Qd1 Qd1 18.Kd1 h5-+) 17...Bc3 (17...Be6 18.hg6 Ng6 19.Qd1 Qd1 20.Kd1-+) 18.Qc2 (18.Qd1 Qa3-+) 18...b6 (better 18...Qe1 19.Kf3 b6-+) 19.hg6 (19.Nf3 Qh1 20.Qc3 Rf8 21.hg6 hg6-+) 19...Bb7 (19...Qe1 20.Kf3 Bb7 21.Kf4 Bg2 22.Bf5 Be5 23.Kg5 Bh1 24.Nh3 hg6 25.Bg6 Ng6 26.Qg6 Ke7 27.Qh7 Rh7 28.c5 Rh3 29.cd6 Ke6 30.Kg4 Qf2 31.Kh3 Qg3) 20.Nf3 (20.Qd1 Qd1 21.Kd1 hg6 22.Rh8 Bh8 23.g3-+) 20...Qh1 21.Qc3 hg6 22.Qf6 (22.Ng5 Bg2 23.Kd2 Qh2-+) 22...Kd7 (better 22...Bf3 23.gf3 Rh2 24.Qd6 Qg1 25.Qb8 Kf7 26.Qh2 Qh2-+) 23.Ng5 (23.c5 bc5 24.Bc4-+) 23...Re8 (better 23...Ra8 24.Qe6 Ke8 25.Qf7 Kd8 26.Ne6 Kd7 27.Nf8 Rf8 28.Qf8 Qg2-+) 24.Qe6=+ Kc7 25.Nf7 Qg2 (better 25...Qh5 26.Ke1 Qh2=+ (26...Bg2?! 27.Qd6 Kc8 28.Qe6 Kc7 29.Qd6 Kc8 30.Qe6 Kc7 31.Qd6=)) 26.Nd6?? (better 26.Qd6 Kc8 27.Qe6 Kb8 28.Qd6 Ka7 29.Qa3 Kb8 30.Qd6 Ka7 31.Qa3 Kb8 32.Qd6=) 26...Bf3-+ 27.Ke1 Qh1 (better 27...Qg1 28.Bf1 Rh8 29.Ne8 Re8-+) 28.Bf1 Rd8?? (better 28...Qh8 29.Ne8 Qe8 30.Qe5 Kc8-+) 29.Qe7= Rd7 30.Qe5?? (better 30.Ne8 Kc8 31.Nd6 Kc7 32.Ne8 Kc8 33.Nd6 Kc7=) 30...Rd6-+ 31.Qe7 (31.c5 bc5 32.Qe7 Rd7 33.b6 Kc6 34.Qe6 Rd6 35.Qe8 Kb6 36.Qb8 Kc6 37.Qe8 Kc7 38.Qe7 Rd7 39.Qc5 Bc6 40.Qe5 Kb6 41.Qb2 Kc5 42.Qe5 Qd5 43.Qc3 Kb6 44.Qb4 Kc7 45.Be2-+) 31...Rd7 32.Qe5 Kb7 33.c5 (33.Qa1 Qh8! 34.Qa6 Kc7 35.Qa7 Kd8 36.Qa8 Ba8 37.f4 Qh4 38.Ke2 Qh5 39.Ke1 Rd1 40.Kf2 Qf3 41.Kg1 Qg2) 33…Rd1 0-1. cipiripi (2470) - JusticeBot (2635), Rated Blitz game, lichess.org, 2016.

4.a3 Nf6 5.g3 (5.Qa4 Nbd7=+ (5...Bd7 6.b5 Na6 7.Nf3 Nc5 8.Qc2 Be7 9.d4) 6.Nf3 (6.Nc3 Be7 7.Nf3 0-0 8.Qb3 Nb6 9.e3) 6...Be7 7.Nc3 0-0 8.e3 Nb6 9.Qb3; 5.Nc3 Be7 6.e3 (6.Nf3 0-0 7.e3 Bf5 8.Be2 ab4 9.ab4) 6...0-0 7.Nf3 Bf5 8.Be2 ab4 9.ab4) 5...Nbd7 (5...Be6 6.Nc3 Bc4 (6...ab4 7.ab4 Nc6 8.Ra8 Qa8 9.b5) 7.Qa4 Nbd7 8.ba5 b5 9.Qc2) 6.Bg2 (6.Nc3 Nb6 (6...Be7 7.Nf3 0-0 8.Bg2 Nb6 9.d3) 7.d3 d5 8.c5 ab4 9.ab4) 6...c6 (6...Nb6 7.Qc2 Qd7 8.c5 Qa4 9.Qc3) 7.Qc2 (7.Nc3 Nb6 8.d3 ab4 9.ab4) 7...g6 (7...ab4 8.ab4 Ra1 9.Ba1=+) 8.e3 (8.Nf3 ab4 (8...Nb6 9.0-0) 9.ab4 Ra1 10.Ba1 Bg7=) 8...Bg7 (8...Qb6 9.ba5 (9.b5 Bh6 10.Nc3 0-0 11.Nf3 Nc5 12.d4 ed4) 9...Qa5 10.Nc3 (10.Ne2 Nc5 11.Nbc3 Bf5 12.e4 Be6) 10...Nc5 11.Nge2 Bf5 12.e4 Be6) 9.Ne2 (9.Nc3 Nb6 10.c5 (10.Ne4 0-0 11.Nf6 Bf6 12.c5 Nd5) 10...Nc4 11.Nf3 0-0 12.0-0 Bf5) 9...0-0 10.0-0 Re8 (10...ab4 11.ab4 Ra1 12.Ba1 Nb6) 11.Nbc3 Nf8 (11...Nb6 12.d3 Bg4) 12.b5 (12.d4 ed4) 12...Bf5 13.d3 Rc8 14.Rad1 Qd7 15.Na4 Qc7 16.bc6 bc6 17.Bc3 d5 Black prepares e4 18.c5 e4 19.d4 N6d7 20.Qd2 Ra8 21.Rb1 Ra6 22.Rb2 Rb8 23.Rfb1 Rb2 24.Rb2 Ne6 25.Nc1 Nd8 26.Bf1 Ra7 27.Rb6 Qc8 (27...Nb6? 28.cb6 Qb7 29.ba7 Qa7 30.Nb3+-) 28.Rb2 Nb7 29.Nb6 Nb6 (29...Qc7 30.Be2=) 30.Rb6 Bd7 31.Qb2 Bf8 (31...Qc7!?+=) 32.Ba6+- Ra6 33.Ra6 (33.Rb7?! Bg4 34.Rb8 Qd7=) 33...Nc5 34.Ra5 Bh3?? (better 34...Nb7 35.Ra7 Nd6+-) 35.dc5+- (35.Rc5?! Qf5 36.f4 Qh5+-) 1–0. Gunajew,Rafal (2255) – Rutkowski,Eugeniusz (1995), Grunwald Cup, 2005.

4.Qa4 Bd7 5.b5 Na6 6.Nc3 Nc5 7.Qc2 Nf6.

4.Qa4 Nd7= 5.d4 (5.Nf3 Ngf6 6.d4 Be7 7.Nbd2 0-0) 5...b6 6.Qc6 Rb8 7.Qa4 Ngf6.

4.Qb3 ab4-/+ 5.Qb4 Nc6 6.Qb3 Be6 (6...Nf6 7.Nf3-/+) 7.e3=+ Na5 8.Qc2 c5 (8...Nf6 9.Nf3=+) 9.Nf3= f5 (9...Nc6 10.Bc3=) 10.d3 Nf6 11.Be2 Be7 12.Nbd2 0-0 13.Ng5 Bd7 14.Bf3 h6 15.Nh3 Nc6 16.Nb3 (16.0-0 g5 17.Bc6 Bc6=) 16...e4 17.Be2 Nb4 18.Qc3 (18.Qb1!?=+) 18...ed3 (better 18...Na2 19.Qc2 Nb4-/+) 19.Bf3? (19.Bd3 Na2 (19...Nd3?! 20.Qd3 Qe8 21.Nf4=) 20.Qd2 Qb6-/+) 19...Bc6 (19...Nc2 20.Kd2 Na1 21.Ra1-+) 20.0-0 Bf3 21.gf3 d5 (21...Nh5 22.Nd2-+) 22.cd5 (22.Nf4-/+) 22...Nbd5 (22...Qd5!? 23.Nf4 Qf3 24.Nc5 Bc5 25.Qc5 Nfd5 26.Nd5 Nd5-+) 23.Qc4 (23.Qd3 Rc8 24.Qc4 Kh8=+) 23...Kh8 (23...b5 24.Qb5 Nc7 25.Qc4 Qd5 26.Rfc1-/+) 24.Qd3=+ Nb4 (24...f4 25.e4 Qc8 26.ed5 Qh3 27.Rfe1-/+) 25.Qf5= Ra2 (better 25...Qd5!? 26.Qd5 Nfd5=+ (worse 26...Nbd5 27.e4+=)) 26.Ra2+= Na2 27.Nf4 Nb4 (27...Kg8 28.Nc5 Bc5 29.Qc5+-) 28.Ng6 Kg8 29.Qe6 (better 29.Nf8 Qf8 30.Ra1+-) 29...Kh7?? (29...Rf7!?+/-) 30.Nf8 (better 30.Ne7 Qd7 31.Qd7 Nd7 32.Rd1+-) 30...Qf8 31.Bf6 Bf6 (better 31...Qf6 32.Qf6 gf6+-) 32.Nc5?? (better 32.Qf5 g6 33.Qc5+-) 32...Qc5= 33.Qe4 Kg8 34.Rd1 (34.Rb1 Bc3=) 34...Nc6 (34...b5 35.Qe8 Kh7 36.Qe4 g6 37.Rd7 Bg7 38.f4=) 35.Rd7 Qc1 36.Kg2 Qc5 37.Qe6 Kh7?? (37...Kh8 38.Rb7 Qg5 39.Kf1=) 38.Qe4 (better 38.Qf6! Qg5 39.Qg5 hg5 40.Rb7+-) 38...Kg8= 39.Rc7 1-0. ClayPigeons (2180) - anwarich (2040), Rated Bullet game, lichess.org, 2020.

5.b5 Be7= (5...Nd7 6.Nf3 Be7 7.Nc3 Ngf6) 6.Nf3 Nf6 7.Nc3 Nbd7.

5.Nc3 Nf6=+ (5...Be6 6.Nf3 Nf6 7.e3 Be7) 6.e3 (6.b5 Be7 7.Nf3 Nbd7) 6...Be7 7.Nf3 (7.Be2 0-0) 7...0-0 (7...e4=) 8.Be2 (8.b5 e4 9.Nd4 c5 10.bc6 Nc6=) 8...c6 (8...ab4 9.ab4 Ra1 10.Qa1=) 9.Qc2 (9.0-0 e4 10.Nd4 c5=) 9...Ne4 (9...e4!? 10.Ng5 ab4 11.ab4 Ra1 12.Ba1 d5=+) 10.d4 (10.0-0 Nc3 11.Bc3 e4+=) 10...Nc3 11.Qc3 e4 12.Nd2 White prepares the advance c5 12...Bf6 (12...ab4 13.ab4 Ra1 14.Ba1=) 13.c5 (13.0-0 c5+=) 13...d5 (13...ab4 14.ab4 Ra1 15.Ba1=) 14.b5 (14.0-0 Be6+=) 14...cb5 (14...b6 15.cb6 Qb6 16.Rc1 cb5 17.Qb3=) 15.Bb5 Bd7 16.a4 (16.Be2 Be6=) 16...Nc6 17.Ba3 (17.0-0 Nb4=) 17...f4 18.0-0-0 (18.0-0!?=) 18...Rc8 (18...Bg4 19.Rdf1–/+) 19.Kb1 (19.Qb3 Bf5–/+) 19...Rf7 (19...Bg4 20.Rc1–/+) 20.Nb3 (20.Qb3 Ne7–/+) 20...b6 (20...fe3 21.fe3 b6 22.Kc1-+) 21.Rc1 (21.ef4 Na7 22.Bd7 Qd7-+ (22...Rd7?! 23.Kc2–/+)) 21...Na7 (21...fe3 22.fe3 Na7 23.Bd7 Qd7-+) 22.Ba6 (better 22.Bd7 Qd7 23.Qb2-+) 22...Rb8 (22...Ba4?! 23.Bc8 Nc8 24.cb6 Nb6 25.Nc5=+) 23.Ka2 Ba4 The passed pawn on a5 quickly leads to threats 24.Rb1 Bb5 25.Bb5 Nb5 26.Qd2 Na3 27.Ka3 b5 (27...a4 28.Na1-+) 28.Ka2 (28.ef4 b4 29.Kb2 a4-+) 28...Ra7 (28...fe3!? 29.fe3 b4 30.Na1-+) 29.ef4 b4 30.g4 (30.Na1 Qe8 31.Rb3 Rc7-+) 30...a4 31.Nc1 b3 32.Ka1 (32.Ka3-+) 32...Qa5 33.Qb2 (33.Rd1 Qc5 34.Rb2-+) 33…a3 (33...a3 34.Qd2 Qd2 35.Nb3 Rb3 36.f5 Bd4 37.Rb2 Qb2) 0–1. Lieser – Blankenberg,Bruno, Neuwied–Palien, 1987.

5.e3 ab4 6.ab4 Ra1 7.Ba1 Nf6 8.d4 ed4 9.Bd4 Nc6 10.Bf6 Qf6 11.b5 Ne5 12.Nd2=+.

5.e3 Nf6 6.Nf3 (6.Qa4 Qd7 (6...Bd7 7.b5 Be7 8.d4 e4 9.Ne2 c6 10.Nbc3 0-0 11.Nf4 g5 12.Nh3=) 7.b5 Qe7= (7...Be7 8.d4 e4 9.Bc3 b6 10.Ne2 d5 11.Nf4 Bb7 12.Be2+=) 8.d4 Nbd7 9.Ne2 f4 10.ef4 ef4 11.Nd2 Nb6 12.Qc2=; 6.d4 ed4 7.ed4 d5 8.b5 Be7 9.Nf3 0-0 10.Bd3 Be6 11.c5 Ne4 12.0-0=) 6...g6 (6...ab4 7.ab4 Ra1 8.Ba1= Be7 9.Be2 e4 10.Nd4 0-0 11.0-0 c5 12.Nc2=) 7.d4 (7.Be2 e4 (7...ab4 8.ab4 Ra1 9.Ba1 e4= 10.Nd4 Bg7 11.0-0 0-0 12.d3=) 8.Nd4 Bg7 9.d3 0-0 10.0-0 ab4 11.ab4 Ra1 12.Ba1=) 7...e4 8.Nfd2 Bg7 (8...ab4 9.ab4 Ra1 10.Ba1= d5 11.Bc3 dc4 12.Bc4=) 9.Be2 (9.b5 0-0= 10.Be2 Be6 11.0-0 Nbd7 12.d5+=) 9...0-0 (9...ab4 10.ab4 Ra1 11.Ba1= 0-0 12.Nc3=) 10.0-0 (10.b5 Be6+= 11.0-0 d5 12.Nc3+=) 10...c6 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.Nc3+= d5 (11...Be6 12.b5+=; 11...ab4 12.ab4+=) 12.cd5 (12.Qb3 ab4 13.ab4 Ra1 14.Ra1 Be6+=) 12...Nd5 13.Bc4 (13.Nd5 cd5 (13...Qd5?? 14.Bc4+-) 14.Qb3 a4+=) 13...Kh8 (13...ab4 14.ab4 Ra1 15.Qa1=) 14.Qb3+= Nb6 15.Be2 (15.ba5 Ra5 16.Be2 N8d7+=) 15...a4 16.Qc2 Be6 17.f3 (17.Rac1 Qg5+=) 17...ef3= 18.Bf3 (18.Nf3 Nc4 19.Nd1 Nb2 20.Qb2 Re8=) 18...N8d7 (18...f4 19.ef4 Bd4 20.Kh1 Rf4 21.Nce4=) 19.b5 (19.Rae1 Re8+=) 19...Nd5 (19...cb5 20.Bb7 Rb8 21.Bc6=) 20.Bd5 (20.Rae1 Nc3 21.Bc3 cb5 22.Bb7 Rb8+=) 20...Bd5= 21.Na4 (21.Nd5 cd5 22.Qd3 Qe7=) 21...Qg5=+ 22.Nf3 (better 22.Rf2!?=+) 22...Qe3–/+ 23.Kh1 Bb3 (23...Be4!? 24.Qd1 Rfe8–/+) 24.Qc3=+ Qc3 25.Nc3 cb5 (25...c5 26.dc5 Nc5 27.Nd2=+) 26.Rfe1 (worse 26.Nb5 Bc4 27.Nd6 Bf1 28.Rf1 Rf6-+) 26...Bc4 27.Re7 (27.Rab1 Rfd8–/+) 27...Rad8 (27...Rfd8–/+) 28.Ne5? (better 28.Rd1!?=+) 28...Ne5-+ 29.de5 Rd2 (29...Rfe8 30.Rb7 Be5-+ (30...Re5?! 31.Nb5 Bb5 32.Rg7 Kg7 33.Be5 Kf7 34.Bc3=)) 30.Bc1? (better 30.Rb1–/+) 30...Rc2-+ 31.Nb5 (31.Nd1 Re2 32.h4 Re1 33.Kh2 Rd1 34.Bh6 Ra1 35.Bg7 Kg8 36.Bf8 Kf8 37.Rh7 Ra3 38.Rb7-+) 31...Bb5 32.Bg5 Bc6 33.Rg1 f4 34.h4 (34.h3 f3 35.Rg7 Kg7 36.Bf6 Kg8-+) 34...h6 35.Bf6 Bf6 36.ef6 Rf6 37.Rd1 (37.Kh2 f3 38.Rc7 fg2 39.Rc8 Kg7 40.Rc7 Rf7 41.Rf7 Kf7-+) 37...Rf8 (37...Bg2?! 38.Kg1 Rc8 39.Kg2-+) 38.Rd6 (38.Rdd7 Bd7 39.Rd7 f3 40.gf3 Rf3 41.Rd8 Kg7 42.Rd7 Kf6 43.Rd6 Kf5 44.Rd1 Kg4 45.Rb1 Kh3 46.Kg1 Rg3 47.Kf1 Kh2 48.Rb7 Rg1) 38...Bg2 (better 38...f3 39.Re1 Re2 40.Rg1-+) 39.Kg1 Bh3 (39...f3 40.Rdd7 f2 41.Kh2 f1N 42.Kg1=) 40.Rg6 Rg8 (better 40...Rd8 41.Rh6 Kg8 42.Rg6 Kf8 43.Re1-+) 41.Rg8 Kg8 42.Re4 (42.Re8 Kg7 43.Re7 Kf6-+) 42...f3 43.Rf4 Rg2 (43...Rg2 44.Kh1 Ra2-+) 0–1. Beaulieu,Michel – Kozakov,M (2415), 2nd Open, d'Angers FRA, 2007.

4.b5 (--> 1.b4 a5 2.b5 e5 3.Bb2 d6 4.c4).

4.b5 b6 5.e3 Nf6 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4 b6).

4.b5 Nd7 5.e3 Ngf6 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4 Nbd7).

4.b5 Be6 5.e3 Nf6 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4 Be6).

4.b5 Nf6 5.e3 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4).

4.b5 Nf6 5.e3 Be7 6.Nf3 0-0 7.Be2 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 a5 7.b5).

4.a3 Bf5 5.Nc3 Nf6 6.e3 Nbd7 7.Qf3+= g6 8.Qb7+/- Bg7 9.Qc6 0-0 10.e4 Be6 11.Nf3 Nb8?? 12.Qa8+- Qd7 13.Qa7 Qc6 14.d4 Bc4 15.d5 Bd5 16.ed5 Nd5 17.Nd5 Qd5 18.Qc7 e4 19.Rd1 Qf5 20.Bg7 Kg7 21.Nd4 Qf6 22.Bc4 Re8 23.Ne2 e3 24.0-0 Qe7 25.Qe7 Re7 26.Rd6 ef2 27.Rf2 Nd7 28.Rf7! Rf7 29.Bf7 Kf7 1–0. woschkat (1995) – mvoong (1695), net–chess.com, 2001.

4.a4 Be6 5.e3 Nf6 6.Nc3 Be7 7.b5 0-0 8.h3 Nbd7 9.d3 (9.Nf3 Nb6 10.d3 ab5 11.ab5 Ra1 12.Qa1 c6=+) 9...Nc5 10.g3 (10.d4 Nce4=+) 10...a5 (10...d5 11.Nf3 dc4 12.Ne5 cd3 13.Nd3=+) 11.Bg2 (11.Nf3 Rb8=+) 11...Rb8 (11...d5 12.cd5 Nd5 13.d4 Nc3 14.Bc3=+) 12.Nge2=+ h6 (12...d5 13.cd5 Nd5 14.0-0=) 13.g4 (better 13.d4 Ncd7 14.d5=) 13...Nh7?? (13...d5 14.cd5 Nd5 15.d4 ed4 16.Nd4 Nc3 17.Bc3=+) 14.Ng3 (better 14.d4!? ed4 15.ed4 Bc4 16.dc5 dc5 17.Qd8 Rfd8 18.Rd1+/-) 14...Bh4 (14...Re8 15.d4 ed4 16.ed4+=) 15.Nce4 (15.d4!? ed4 16.ed4+=) 15...Ne4=+ 16.Ne4 f5 17.gf5 Bf5 18.0-0 Nf6 19.Nf6 (19.Ng3 Be6=) 19...Rf6 (19...Qf6 20.e4 Bd7 21.f4=) 20.f4 (20.Kh2 Be6 21.f4 ef4 22.ef4 Rf8=) 20...Rg6= 21.Kh1 (21.fe5 Bh3 22.Qf3 Bg2 23.Qf7 Kh7 24.Qg6 Kg6 25.Kg2 Qg5 26.Kh1 Bg3-+) 21...ef4 (21...Qd7 22.fe5 Rg2 23.Kg2 Bh3 24.Kh1 Bf1 25.Qf1 Re8-+) 22.Rf4+= Qg5 (22...Rg2 23.Kg2 Qg5 24.Kh1+-) 23.Qf3 Rf8? (better 23...Be6 24.Rf1 Kh7+/-) 24.Rf1+- Rf7 25.Rg4! (25.Rf5 Rf5 26.Qe2 c5-/+) 25...Qh5 (25...Bg4 26.Qf7 Double attack (26.Qf7 Pinning; 26.Qf7 Deflection; 26.Qf7 Decoy; 26.Qf7 Clearance)) 26.Rg6 (better 26.b6 Be6 27.Qf7 Bf7 28.bc7+/-) 26...Qf3? (26...Bg6 27.Qh5 Rf1 28.Bf1 Bh5 29.e4=) 27.Rf3 (better 27.Bf3 Bg6 28.Bd5+-) 27...Bg6+= 28.Rf7 Kf7 29.Bb7 Bd3 30.Bd5 Kg6 31.Bc3 Bf2? (better 31...Bd8+/-) 32.Ba5+- Be3 (32...c6 33.Bc6 Be3 34.Bd5+-) 33.Bc7 Kf5 34.a5 Ke5 (34...Bd4 35.Bb6 Bc4 36.Bc4+- (36.Bd4?! Bd5 37.Kh2 g5+-)) 35.b6 1-0. frozen_shadow (2165) - sazmer (2005), Rated Blitz game, lichess.org, 2016.

4.a4 g6 5.e3= Bg7 6.b5 a5 7.Nf3 Bg4+= 8.Be2 Ne7 9.Nc3 Nd7 10.d4 ed4 11.Nd4 Be2 12.Qe2 0-0 13.0-0 Nf5 14.Nf5+/- gf5 15.Nd5 Re8 16.Bg7 Kg7 17.Qh5 Nf6?? 18.Qf5 Re5 19.Qf6 Qf6+/- 20.Nf6 Kf6 21.Rac1 Rae8 22.Rfd1 h5 23.Kf1 Rg8 24.g3 Rgg5 25.h4 Rg8+/- 26.Ke2 Kf5 27.Rd5 Rge8 28.Rc3 f6 29.f4 Rd5 30.cd5 Re7 31.Kf3 b6 32.Rc4 Kg6 33.Re4 Re4? 34.Ke4 f5 35.Kd4 Kf6 36.e4 Kg6 37.e5 de5 38.Ke5 Kf7 39.d6 cd6 40.Kd6 Kf6 41.Kc6 Ke6 42.Kb6 Kd5 43.Ka5 Kc4 44.b6 Kc5 45.b7 (45.b7 Kd5 46.Kb4+-) 1–0. ARDA – ladysil, fics, 2001.

4.Qa4 b5 5.cb5+= Bd7 6.e3 Nf6 7.Nc3 Be7 8.Bd3 0-0 9.Nf3 c6 10.bc6 Bc6 11.b5 Bd7?? 12.0-0+/- d5? 13.Ne5+- Be8 14.Qb3 Bd6 15.Nf3 ab5 16.Bb5 Na6 17.Ba6 Ra6 18.Nd5?? Nd5–/+ 19.Qd5?? Bh2!-+ (19...Bh2 20.Kh2 Qd5-+) 0–1. Borup,John – Howie,Andy, CL7–2001.06.04, 2001.

4.Qc2 f5 5.e3 (5.Nf3 Nf6=) 5...Nf6 6.Nf3 (6.Nc3 Be7=) 6...g6 (6...e4!? 7.Ng5 Be7=+) 7.Be2 Bg7 8.0-0 0-0 9.Nc3 Nc6 10.b5 Ne7 (10...ab5 11.cb5 Na5 12.Rab1=) 11.c5 e4 (11...dc5 12.ba6 b6 13.a7 Ra7 14.Ne5+=) 12.cd6 cd6 (12...Qd6 13.Ng5 Be6 14.Ba3+/-) 13.Nd4+/- Kh8 (13...ab5 14.Ncb5 Nfd5 15.Bc4+/-) 14.Rfc1 Bd7 15.a4 (15.Ba3 Nfd5 16.ba6 Bd4 17.ed4 Bc6 18.Nd5 Nd5+-) 15...Ned5 (15...Nh5 16.Bh5 Bd4 17.ba6 ba6 18.ed4 gh5 19.d5+/-) 16.Qb3 Nc3 17.Bc3 Qe7 18.Bb4 (18.ba6 ba6 19.Rab1 a5+/-) 18...a5 19.Ba3 Rac8 (19...Rfc8+/-) 20.h3 (better 20.b6!?+/-) 20...f4= 21.Rc8 Bc8 (better 21...Rc8 22.Rc1 Rc1 23.Bc1 f3=) 22.Qc3 (better 22.Rc1 f3 23.Bf1+=) 22...f3-/+ 23.Bf1 (23.gf3 Nd5 24.Qc4 Qg5 25.Kh1 Bh3-+) 23...fg2 24.Bg2 Nd5 25.Qc2 (25.Qa5? b6 26.Qa8 Qf7-+) 25...Qg5?? (better 25...Bd4 26.ed4 Bf5-/+) 26.Qe4+/- Nb4 27.f4 Qh4 28.Nf3 Qg3 29.Rc1 (worse 29.Bb4 Bh3 (29...Ba1 30.Qe7 Rf5 31.Ng5 Qg5 32.fg5 ab4 33.Bd5+-; 29...ab4?! 30.Rb1=+) 30.Ng5 A) 30...Ba1 31.Qb7 Bg7 32.Bc3 Qg2 33.Qg2 Bg2 34.Bg7 (worse 34.Kg2 Bc3 35.dc3 d5-/+) 34...Kg7 35.Ne6 Kf6 36.Nf8+/-; B) 30...ab4?! 31.Rc1 Qg2 32.Qg2 Bg2 33.Kg2=; C) 30...Bg2 31.Qg2 Qg2 32.Kg2 Ba1 (worse 32...ab4 33.Rb1+-) 33.Bd6 Rc8=+) 29...Bh3 30.Ng5 Nd3 31.Rc7 (31.Rf1!? Bg2 32.Qg2 Qg2 33.Kg2+/-) 31...Qf2= 32.Kh2 Bg2 33.Qg2 Qh4 34.Qh3 Qf2 35.Qg2 Qh4 36.Kg1 Qe1 37.Qf1 Qd2 38.Qg2?? (better 38.Qf3 Qe1 39.Kg2=) 38...Qe3-+ 39.Kh1 Qe1 (better 39...Nf4 40.Qf1 Qg3 41.Nf3-+) 40.Kh2 (40.Qg1 Qe2 41.Bd6-+) 40...Qh4 41.Kg1 (41.Nh3 Nf4 42.Qg3-+) 41...Qf4 (41...Bd4 42.Qf2 Qf2 43.Kh1 Qg1) 42.Bd6 (42.Rg7 Qd4 43.Kh2 Qe5 44.Kg1 Qg7-+) 42...Qd6 (42...Qd4 43.Kh1 Nf2 44.Qf2 Qf2 45.Nf7 Rf7 46.Rc8 Bf8 47.Rf8 Rf8 48.Bf8 Qf8 49.Kg2 Qh6 50.Kf3 Qh4 51.Ke2 Qd4 52.Kf3 Qc4 53.Ke3 Kg8 54.Kd2 Kg7 55.Kd1 Qa4 56.Kd2 Qb5 57.Kc3 a4 58.Kd4 a3 59.Kc3 a2 60.Kd2 a1Q 61.Ke3 Qe1 62.Kf3 Qbe5 63.Kg4 Q1g3) 43.Nf7 Rf7! 44.Rf7 (44.Rf7 Qd4 Double attack (44...Bd4 Decoy)) 44...Qd4 (better 44...Qc5 45.Kh1 Qh5 46.Qh2 Qd5 47.Kg1 Bd4 48.Rf2 Bf2 49.Qf2 Nf2 50.Kf2 Qd2 51.Kg3 Qd3 52.Kf4 Qd1 53.Ke5 Qa4 54.Kd6 Qb5 55.Kc7 a4 56.Kc8 a3 57.Kb8 a2 58.Kc8 Qc6 59.Kb8 b5 60.Ka7 a1Q 61.Kb8 Qaa8) 45.Kh1 Qa1 (45...Qh4 46.Qh2 Qe1 47.Qg1-+) 46.Rf1 (46.Qf1 Qf1 47.Rf1-+) 46...Qa4 47.Qb7 (47.Qg3 Qe4 48.Qg2-+) 47...Qh4 48.Kg1 Qg3 (48...Bd4 49.Kg2 Qg4 50.Kh2 Be5 51.Kh1 Qh3 52.Kg1 Qh2) 49.Qg2-+ Bd4 50.Kh1 Qh4 51.Qh2 Qe4 (better 51...Nf2 52.Rf2 Qf2 53.Qf2 Bf2-+) 52.Qg2 Qg2 (52...Qe7 53.Qg3 Nc5 54.Qf4 Qb7 55.Qf3 Qf3 56.Rf3-+) 53.Kg2 Nb4 (53...a4!? 54.Rf8 Kg7 55.Rd8 Nf4 56.Kf3-+) 54.Rd1 (54.Kf3 Kg7 55.Rd1 Bc5 56.Rd7 Kf6 57.Rh7 Nd5-+) 54...Bc5 55.Rc1 (55.Rd8 Kg7-+) 55...Bb6 56.Rc8 (56.Re1 Nd5 57.Kf3 Nc7-+) 56...Kg7 57.Rb8 (57.Kf3 h5-+) 57...Nd5 58.Rd8 (58.Kf3 Kf6 59.Rh8-+) 58...Nb4 (better 58...Bd8 59.Kf3 a4-+) 59.Rd7?? (59.Rb8 Bd4-/+) 59...Kf6?? (59...Kh6 60.Re7 Nd5 61.Rd7 Ne3 62.Kf3-+) 60.Rb7?? (better 60.Rd6 Ke5 61.Rb6=) 60...Nd5-+ 61.Rh7 Ke5 (better 61...a4 62.Rh8 a3-+) 62.Rb7 (62.Rh4-+) 62...a4 63.Rb8 a3 64.Ra8 Bc5 65.Kf3 Kd4 66.Ra4 (66.Ra6 Kc4 67.Rg6 Nc3-+) 66...Kc3 67.Ke4 (67.Kg4 Kb3 68.Ra3 Ba3-+) 67...Nb6 68.Ra6 (68.Ra7 Kc4 69.Ke5 Kb5-+) 68...Kb3 69.Kd3 (69.Ke5 a2 70.Ra2 Ka2-+) 69...a2 70.Ra7 (70.Ra2 Ka2 71.Ke4-+) 70…Kb2 (70...Kb2 71.Ra2 Ka2-+) 0-1. bjoernsen (2305) - SV1977 (2290), Rated Blitz game, lichess.org, 2016.

4.Nc3 Be7 5.Nf3 Nf6 6.g3 0-0 7.Bg2 b6 8.Ne5+= de5 9.Ba8+/- c6 10.b5+- ab5 11.cb5 Bd7 12.a4 Qc7 13.Rc1 Qa7 14.bc6?? Qa8-+ 15.Rg1 Nc6 16.Ra1 Bb4 17.Nb5 Qb8 18.Bc3 Bh3 19.Qb3 Bc3 20.Qc3 Nd4 21.Nd4–/+ ed4 22.Qd4 Rd8 23.Qb4 Qe5 24.Rc1 Re8 25.Qb5 Qb8 26.d3 Bd7 27.Qb3 Ng4 28.h3 Be6 29.Qb5 Nf6 30.g4 h6 31.Rb1 Qh2 32.Kd2 Qf2 33.Rgf1 Qh4?? 34.Rf6!+- Qf6 35.Qe8 Kh7 36.Rb6 Qf4 37.Kc2 Qe5 38.Qb5?? Qe2= 39.Kc3 Qe1 40.Kd4 Qf2 41.Kc3 Qe1 42.Kd4 Qa1 43.Kc5+- Qa3 44.Kc6 Qc1 45.Kd6 Qf4 46.Kc5?? Qe3 47.d4+/- Qc1 48.Kd6+- Qa3 49.Kc7 Qc3? 50.Kb8 Qd4 51.a5 Qd8+/- 52.Ka7 Bd7?? 53.Qd3 Kg8 54.Rb8 (54.Rb8 Qb8 55.Kb8+-) 1–0. algernon (2325) – zook (1810), net–chess.com, 2007.

4.Nc3 Qf6 5.Nf3 c6 6.e3 Ne7 7.d4 ed4 8.Nd4 Nd7 9.Bd3 g6?? (better is 9...Ne5+=) 10.Ne4+- Qh4 (10...Qe5 11.f4 Qe4 12.Be4+-) 11.Nd6 Kd8 12.Nf7 Kc7 13.Ne6 Kb8 14.Bh8 Nf5 15.Bf5 (15.Nf8 Ne3 16.Nd7 Bd7+-) 15...Qc4 (15...Bb4 16.Kf1 gf5+-) 16.Nf8 Qb4 17.Qd2 Qf8 (17...Qd2 18.Kd2 Nf8 19.Be5 Ka7 20.Bd4 Kb8 21.Bc8 Kc8 22.Rab1+-) 18.Bd7 Qf7 19.Qd6 Ka7 20.Bd4 (20.Bd4 b6 21.Qc7 Bb7 22.Bb6) 1–0. Groznov,Vladmir – Lebduska,Daniel, RN–2010-0-00256, 2010.

4.Nc3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.Nc3 a6).

4.c5 Nf6 5.e3 Nc6 6.cd6 Bd6 7.a3 0-0 8.Nf3 h6 (8...Bg4 9.Qc2–/+) 9.Bc4 (9.d4 e4 10.Nfd2 Bf5=) 9...b5 10.Bb3 Bg4 (10...e4!? 11.Qc2 Nb4 (11...ef3?! 12.Qc6 fg2 13.Qg2=) 12.ab4 ef3 13.gf3 Kh8=+) 11.h3 Bh5 12.g4 (12.Qc2!? Bf3 13.gf3=) 12...Bg6–/+ 13.Nc3 Bd3 14.Bc2 e4 15.Bd3 ed3 16.Qb3 Ne5 17.Ne5 Be5 18.f4 Bc3 19.Bc3 Ne4 20.h4 Nc3 21.Qc3 Qd5 22.0-0-0 (22.0-0!?=+) 22...Rac8 23.Kb2 c5 24.Rc1 c4 25.g5 h5 26.Rhf1 f5 27.Qe5 Qe5 28.fe5 g6 29.Rf4 Rce8 30.Rd4 Re5 31.Rd6 Re4 32.Rh1 f4 33.ef4 Rff4 34.Rg6 Kf7 35.Ra6 Rf2 36.Kc3+/- Ree2 37.g6 Kg7 38.Rg1 Rg2?? 39.Rg2+- Rg2 40.a4 ba4 41.Ra4 Kg6 42.Ra6 Kf5 43.b5 Kg4?? 44.Rg6 Kh3 45.Rg2 Kg2 46.b6 Kh3 47.b7 (47…Kh4 48.b8Q+-) 1–0. revbodio1 – mikkel, Live Game Caissa's Web, 2004.

4.d4 Nc6 5.d5 Nb4? ( 5...Nce7=) 6.Qa4+/- b5 (6...Nc6!? 7.dc6 bc6 8.Qc6 Bd7+/-) 7.Qb4+- bc4 8.Qc4 Bb7 (8...Nf6 9.Nc3+-) 9.Qa4 Qd7 10.Qd7 Kd7 11.e4 Nf6 (11...f5 12.f3+-) 12.Nd2 h6 (12...Rb8 13.Bc3+-) 13.Rb1 Rb8 14.Ngf3 Be7 15.Bc4 (15.Be5 de5 16.Ne5 Kc8+-) 15...Rhc8 (15...c6 16.dc6 Bc6 17.Bd3+-) 16.0-0 Ke8 17.Rfc1 a5 18.Bc3 a4 19.Bb5 (19…Kd8 20.Ba4 Ne4 21.Ne4+-) 1–0. Wall,Bill – Dread, Internet, 2004.

4.d4 ed4 5.Qd4 f6 6.b5 ab5 7.cb5 Bd7 8.e3 b6?? 9.Qe4+- (9.Qe4 Be6 10.Qa8+- (< 10.Qe6 Qe7 11.Qd5 Ra7+-)) 1–0. bentengutama (1955) – hzsolt (1960), net–chess.com, 2003.

4.d4 e4 5.e3 d5 6.c5 c6 7.Nc3 Nd7 8.f3 Ndf6 9.a4 Nh6 10.fe4 b6 11.ed5+/- Nd5 12.Nd5 cd5 13.Bd3 Qh4 14.g3 Qg4 15.Qg4+- Ng4 16.Ke2 bc5 17.bc5 Be7 18.Nf3 0-0 19.e4 Re8 20.e5 Rb8 21.Ba3 g6 22.Bc1?? h6? 23.h3+- Nf6 24.ef6 Bf6 25.Kf2 g5 26.Rb1 (26.Rb1 Rb1 27.Bb1+-) 1–0. bridlingtonbrummie – xorb, ChessWorld.net, 2009.

4.e4 Nd7 5.Nc3 Ngf6 6.Nf3 h6 7.d4+= Be7 8.Bd3 0-0 9.0-0 ed4 10.Nd4 Ne5 11.Be2 Nfg4 12.Nd5+= Bg5? 13.f4+- Bh4? 14.fe5 Ne5 15.Nf5 Bf5 16.Rf5 Ng6 17.Qd4 f6 18.g3 Bg5 19.h4 c6 20.hg5 cd5 21.Qd5 Kh7 22.gf6 gf6 23.Qb7 Ne7 24.Bf6 (24.Bf6 Rf7 25.Bh5+-) 1–0. Wall,Bill – Sinn,John, internet, 2005.

4.e4 Be6 5.Nf3 Nf6 6.Ng5 Bd7 7.Bd3 Be7 8.Nc3 c6 9.0-0= 0-0 10.a4 Bg4 11.Be2 Bc8 12.d4 Nbd7 13.Nf3 c5 14.dc5 dc5 15.b5 ab5 16.ab5 Ra1 17.Qa1 b6 18.Qa7 h6? 19.Rd1+- Qe8 20.Qc7 Qd8 21.Qc6 Qe8 22.Na4 Nb8 23.Qb6 Ne4? 24.Qb8 Bd6 25.Rd6 Nd6 26.Qd6 Bb7 27.Nc5 Qa8 28.Ne5 Bg2 29.Ned7 Bh1 30.Qf8 Qf8 31.Nf8 (31.Nf8 Ba8 32.Nfd7+-) 1–0. wiking – piffey, internet, 2010.

4.e4 f5 5.Nc3 Nf6 6.Bd3 fe4 7.Ne4 Be7 8.Qb3 Be6 9.Ng5= Qd7 10.N1f3 b5 11.0-0 bc4 12.Bc4+/- d5 13.Be2 Bd6 14.Bd3 e4 15.Ne6+- Qe6 16.Bf6 Qf6 17.Qd5 c6 18.Qe4 Be7 19.Rae1 Ra7 20.Qc4 Rd7 21.Re6 Qf7 22.Ne5 Qf8 23.Re1 Kd8 24.Nc6 Nc6 25.Qc6 (25.Qc6 Ke8 26.Rd6 g6 27.Qd7 Kf7 28.Bc4 Kg7 29.Re7 Kh6 30.Qh3 Kg5 31.Re5 Qf5 32.f4 Kf4 33.Qg3#) 1–0. wiking – maurice91, internet, 2010.

4.e4 Qh4 5.d3 Nc6 6.a3 Nf6 7.Nf3= Qh5 8.Nbd2 Bg4 9.Be2 Qh6 10.0-0 Nh5 11.h3 Bh3+- 12.gh3 Nf4 13.h4 Be7 14.Re1?? Bh4 15.Bf1? Qg6-+ 16.Kh1 Bf2 17.Bh3?? Be1 18.Qe1 Nh3 19.Qh4 Nf4 20.Rg1 Qh5 21.Rg7 Qh4 22.Nh4 Nd3 23.Bc3 Nd8 24.Ndf3 Ne6 25.Rg3 Nf2 26.Kg1 Ne4 (26...Ne4 27.Be5 de5-+) 0–1. alaamattar (2135) – marv (2325), net–chess.com, 2006.

4.Nf3 Be6 5.e4 Nf6 6.Ng5 Qd7 7.Ne6 Qe6 8.Nc3+= Nc6 9.Nd5 Rc8 10.f3 Be7= 11.Bd3 0-0 12.0-0 Nd4 13.Ne7 Qe7 14.Bd4 ed4 15.Qb1 c5 16.Qb2 Nh5 17.Bc2 Nf4 18.g3= Nh3 19.Kh1 Qg5 20.Ba4 Rcd8 21.f4 Qe7 22.d3 f5 23.Qg2+/- fe4 24.Qh3 e3 25.Qg2 Rf6 26.Rab1 b6 27.Bc6 e2? 28.Rfe1 Qe3 29.Qe2 Qe2 30.Re2 Kf8 31.bc5 bc5 32.Kg2 h6 33.h4 Kf7 34.Rb7 Kf8 35.Ree7 a5 36.Rg7 d5 37.Bd5 a4 38.Rg8# 1–0. marekt – snake007, gameknot.com, 2001.

4.Nf3 Be7 5.Nc3 Nf6 6.d4 ed4 7.Nd4 0-0 8.e4 Nbd7 9.Be2 Ne5 10.f4 Ng6+= 11.0-0 c5 12.bc5 dc5 13.Nc2 Qd1 14.Rad1+/- Bd7? 15.e5+- Ne8?? 16.Rd7 Rb8 17.f5 Ne5 18.Re7 Nc6 19.Re4 Nf6 20.Rh4 Rfe8 21.Rf2 Nb4 22.Nb4 cb4 23.Nd5 Nd5 24.cd5 Rbd8 25.Rg4 Rd5 26.Rg7 Kf8 27.Rh7 Rd2 28.Bf6 Rd1 29.Rf1 (29.Rf1 Rf1 30.Kf1 Re2 31.Rh8#) 1–0. marekt – NN, GameColony.com, 2002.

4.Nf3 Bg4 5.Nc3 Nf6 6.e3 Be7 7.h3 Bf3 8.Qf3 c6 9.g4 0-0 10.h4 h6?? (better is 10...d5 11.g5 Nfd7=) 11.g5+- hg5? (better is 11...Nh7 12.gh6 g6+-) 12.hg5 Nh7 (12...g6 13.gf6 Bf6+-) 13.Qh5 f6 (13...f5 14.g6 Rf6 15.Qh7 Kf8 16.Qh8#) 14.g6 (14.g6 Re8 15.Qh7 Kf8 16.Qh8#) 1–0. Degterev,Pavel (2225) – Bokadom,Mohamed, CP–2011–P–00028, 2011.

4.g3 Bd7 5.Bg2 Ra7 6.Nc3 Nf6 7.a4 Be7 8.b5 ab5 9.ab5 Ra1 10.Qa1 c6 11.Qa7 Qc8 12.Nf3 0-0 13.0-0 cb5 14.cb5 e4 15.Ng5 d5 16.Rc1 Bc5 17.Qa2+/- h6 18.Nd5 hg5 19.Ne7 Be7= 20.Rc8 Rc8 21.Bf6?? Bf6 22.Be4=+ Bb5 23.d3 Rc1 24.Kg2 Bc6 25.Qa7 Be4 26.de4 Nc6 27.Qb7 Ne5 28.Qb8 Kh7 29.f4 gf4 30.gf4 Nc4?? 31.e5+/- Bh4 32.Qb7 f6? 33.Qe4 Kh6+/- 34.e6 Nd6 35.Qe3 Rc7 36.h3?? Re7 37.f5 Bg5 38.Qf3 g6 39.e4 gf5 40.ef5 Rc7 41.Qg4 Rc2= 42.Kf3?? Rc3?? 43.Ke2 Re3 44.Kf2 Ne4 45.Kg2+= Rg3?? 46.Qg3+- Ng3 47.Kg3?? Kg7= 48.Kf3 Kf8 49.Ke4 Ke7 50.Kd4 Kd6 51.Ke4 Bc1 52.h4 Bd2 53.h5 Bh6 54.Kd4 Kc6 55.Kc4 Bf4 56.Kd4 Bc1 57.Kc4 Bh6 58.Kd4 ½–½. alaamattar (2155) – cruciverbalist (2030), net–chess.com, 2007.

5.Qb3 Be6 6.e3 Nf6 7.Nf3 d5 8.d4? e4 9.Nfd2 Nb4 10.cd5 Bd5 11.Bc4 Nd3!-+ 12.Ke2 c6 13.Bd5 cd5-+ 14.f3 Nb2 15.Qb2–/+ Be7 16.Qb7=+ 0-0 17.Qb2 Qd7 18.Qa2 Ra7 19.Nc3–/+ Rb7 20.Rhb1 Rb1 21.Rb1 ef3 22.Nf3 Qf5 23.Rb6=+ h6 24.Ra6 Qc8 25.Rf6= Bf6 26.Nd5 Re8 27.Nf6+= gf6 28.a5 Qc3 29.Qd2 Qa3 30.Ne1 Ra8 31.Nc2 Qa2 32.Ne1 Ra5 33.Qa2 Ra2 34.Kf3 f5 35.h4 Ra3 36.g3 Kg7 37.Ng2 Kf6 38.Nf4 Ra1 39.Nd3 Ke6 40.Ne5 f6 41.Nd3 Kd5 42.Nb4 Kc4 43.Nc6 Kd3 44.d5 Rf1 45.Kg2 Ke2?? 46.Nd4+- Ke1 47.d6 Rf2 48.Kh3 Kf1?? 49.d7 Kg1 50.Nf3!! Rf3 51.d8Q Rf2 52.Qd1 Rf1 53.Qd4 Kf2 54.e4 Kf3 55.Qd3 Kf2 56.ef5 h5 57.Qf1! Kf1 58.g4 hg4 59.Kg4 Kf2 60.h5 Kg1 61.h6 Kh1 62.h7 Kg1 63.h8Q Kg2 64.Qh3 Kg1 65.Qb3 Kh1 66.Kg3 Kg1 67.Qb1# (67.Qd1#) 1–0. Trkn – Russ163, itsyourturn.com, 2000.

5.b5 Nb4 6.Bc3 a5 7.Bb4 ab4 8.e3 Nf6 9.Nf3 Be7 10.Be2 h6 (10...e4 11.Nd4=+) 11.0-0 0-0 12.d4 Bg4 13.de5 Bf3 (better 13...de5!? 14.Ne5 Qd1 15.Bd1 Bf5=) 14.Bf3+/- (14.ef6?! Bf6 15.Ra2 Be2 16.Re2 Qb8=) 14...de5 15.Nd2 (15.Bb7 Qd1 16.Rd1 Rfd8+/-) 15...e4 (15...Qc8 16.a5+=) 16.Be4 (16.Ne4 Qd1 17.Rfd1 Ne4 18.Be4 Bf6+/-) 16...Ne4 17.Ne4 Qd1 18.Rfd1 Rad8 19.Kf1 Rd1 20.Rd1 b3 21.Rb1 Bd6? (better 21...Ra8!?+/-) 22.Nd6+- cd6 23.Rb3 Rc8 24.Rb4 f6 (24...b6 25.e4+-) 25.a5 Kf7 26.Ke2 Ke6 27.Kd3 Ke5 28.f4 Kf5 29.h3 g5 (29...Ke6 30.g4+-) 30.g4 Kg6 (30...Ke6 31.a6+-) 31.Ra4 White plans a6 (31.a6 Kf7+-) 31...gf4 32.ef4 f5 (32...Rc7 33.Kd4 Kf7 34.a6 ba6 35.Ra6+-) 33.a6 ba6 34.Ra6 Ra8 (34...Rf8 35.Rd6 Kg7+-) 35.Ra8 fg4 36.hg4 h5 37.gh5 Kh5 38.Rd8 Kg4 39.Rd6 Kf4 (39...Kg3 40.Ke3 Kg2 41.Rg6 Kh3 42.Kf3 Kh2 43.Rh6 Kg1 44.c5 Kf1 45.Rh1) 40.Re6 (40.b6 Kg3 41.b7 Kh4 42.c5 Kg5 43.b8Q Kh5 44.Qh8 Kg5 45.Qg7 Kf5 46.Rf6 Ke5 47.Qg5) 40...Kf5 41.Re4 Kf6 (41...Kg6 42.c5 Kf7 43.c6 Kg6 44.c7 Kg7 45.c8Q Kf6 46.Qe6 Kg7 47.Rg4 Kh7 48.Qf5 Kh6 49.Qg6) 42.c5 (42.b6 Kg7 43.b7 Kg6 44.b8Q Kf6 45.Qe5 Kf7 46.Qf5 Kg7 47.Re7 Kh6 48.Rh7) 42...Kf5 (42...Kf7 43.c6 Kf6 44.c7 Kg6 45.c8Q Kf6 46.Qe6 Kg7 47.Rg4 Kh7 48.Qf5 Kh6 49.Qg6) 43.c6 Kf6 44.c7 Kf5 45.c8Q Kg5 (45...Kg6 46.Qg4 Kf6 47.Qf3 Kg5 48.Rg4 Kh6 49.Qh1) 46.Qc5 (46.Qe6 Kh5 47.b6 Kg5 48.Rg4 Kh5 49.Qg6) 46...Kg6 47.Rd4 (47.Re6 Kf7 48.Qe7 Kg8 49.Rg6 Kh8 50.Qh4) 47...Kf6 (47...Kg7 48.Qe7 Kg6 49.Rg4 Kf5 50.Rg5 Kf4 51.Qf6) 48.Rd6 Kg7 (48...Kf7 49.Qc7 Ke8 50.Rd8) 49.Qc7 Kf8 50.Rd8 1-0. BeepBeepImAJeep (2590) - amin_ngeblues, lichess.org, 2017.

5.b5 ab5 6.ab5 Ra1 7.Ba1 Nd4 8.e3 Ne6 9.d4 ed4 10.Bd4 d5 (10...Nd4 11.Qd4 Nf6=) 11.Qa4 (11.Bc3 Nf6=) 11...Qe7 (11...Nd4!? 12.ed4 Qe7 13.Ne2 dc4 14.Qc4 Be6-/+) 12.cd5 Nf4?? (12...Nd4 13.Qd4 Qb4 14.Nd2 Qd4 15.ed4=) 13.Ne2 (better 13.b6 Kd8 14.Nc3+-) 13...Ne2?? (better 13...Nd3 14.Kd2 Nf2=) 14.Be2+- Nf6 (14...Qb4 15.Qb4 Bb4 16.Bc3 Bc3 17.Nc3+-) 15.b6 c6? (15...Bd7 16.Qa2 Qb4 17.Nd2+-) 16.dc6 (16.Qa8 Qd7 17.dc6 bc6+-) 16...bc6 (16...Qb4 17.Nc3 Qa4 18.Na4 Bb4 19.Kd1 bc6 20.Bf3+-) 17.Qc6 (17.0-0!? Qe6+-) 17...Qd7 18.Qd7 Nd7 (18...Kd7 19.Bb5 Ke6 20.Bc4 Kd7 21.0-0+- (21.Bf7?! Bb4 22.Kd1 Rf8+-)) 19.Bf3 (19.0-0 Bd6+-) 19...Bb4 20.Ke2 (better 20.Kd1 Ba6 21.Kc2+-) 20...Ba6 21.Kd1 0-0 22.Kc2 Rc8 (22...Rb8 23.Nc3 Nb6 24.Ra1+-) 23.Kb3 Bd6 24.b7 (better 24.Ka4 Rc2 25.Nc3+-) 24...Bc4?? (better 24...Bb7 25.Bb7 Rb8+/-) 25.Kb2 Re8 26.Rc1 (26.Nd2 Be6+-) 26...Bd3 (26...Ne5 27.Be5 Be5 28.Ka3 Be6+-) 27.Rc8 Nf6 (27...Rf8+-) 28.Bf6 gf6 29.Re8 Kg7 30.b8Q Bb8 31.Rb8 1-0. MASZTALERZ (2120) - Zand1t, Rated Classical game, lichess.org, 2016.

5.e3 a5 6.b5 b6 7.Nc3 c5 8.Nf3 Bf5 9.d4 e4 10.Nd2 Nf6 11.Be2 Be7 12.0-0 Nbd7 13.f3 ef3 14.Bf3 Ra7 15.Qe2 0-0 16.e4 Bg6 17.e5 de5 18.d5 Bd6 19.Nce4 Ne4 20.Ne4 Be4 21.Be4 Nf6 22.Bd3 Re8 23.Bc2 h6 24.Ra3 Nh7 25.Bh7 Kh7 26.Rg3 f6 27.Qe4 Kh8 28.Bc1 Rf8 29.Rf5 Qe8 30.Rh3 Qg6 31.Rg3 Qh7 32.Qg4 Rg8 33.Rh5 Bf8 34.Rgh3 Rf7 35.d6 f5?? 36.Qf3 Qg6 37.Qd5= Rd7 38.Qe5 Rd6?? 39.Rh6 Qh6 40.Bh6 (40.Bh6 Rd1 41.Kf2 Rf1 42.Kf1 Kh7 43.Qf5 g6 44.Bf8#) 1–0. Schwab – Sander, tt, 1988.

5.e3 Nc6 6.b5 Nb4 7.Qb3 d5 8.Be5 f6 9.Bc3 dc4? 10.Bc4+- c6 11.Bb4 Bb4+- 12.Qb4 ab5 13.Bg8 Rg8 14.Nc3 h6 15.Nf3 Qc7 16.Qe4 Kf7 17.0-0 ba4 18.Ra4 Ra4 19.Qa4 b5 20.Qa3 Qb6 21.Rb1 g5 22.Nd4 Rb8 23.Qd6 Be8 24.Ne4 c5 25.Qd5 Ke7 26.Nf5 Kf8 27.Nc5 h5 28.Ne6 Kf7 29.Nf4 Kf8+- 30.Ng6! Bg6 31.Rc1 Rd8+/- 32.Qe4 Bf5 33.Qf5 Rd2 34.Rc8 Kg7+= 35.g3 Rd1 36.Kg2 Qb7 37.Kh3 b4 38.Qc5= Qd7 39.Kg2 Qd5 40.Qd5+/- Rd5 41.Rb8 g4 42.Rb4 f5 43.e4 fe4+= 44.Re4 Kg6 45.Rf4 Kg5 46.Rf8 Rd4 47.h4 Kh6 48.Rh8 Kg6 49.Rg8 Kh6 50.Rg5 Rc4 51.f4 Rc2 52.Kf1 Rc1 53.Ke2 Rc2 ½–½. Nielsen,Joergen Axel – Hansen,R, Denmark, 1972.

5.e3 Nf6 6.b5 Be7 7.Nf3 0-0 8.Be2 e4 9.Nd4 c6 10.0-0 c5 11.Nc2 d5 12.cd5 Nd5 13.Nc3 Nf6 14.f3 Bf5 15.fe4+= Ne4?? 16.Rf5+- g6 17.Rf1 f5 18.Ne4 fe4 19.Rf8 Qf8 20.Bc4 Qf7 21.Bf7 Kf7 22.Qf1 Ke8 23.Qf4 Nd7 24.Qe4 (24.Qe4 ab5 25.ab5 Ra1 26.Na1+-) 1–0. valpa – chairman, playchess.de, 2002.

5.b5 ab5 6.ab5 Ra1 7.Ba1 Bf5 8.Nf3 Be7 9.Nc3 0-0 10.d3 c6 11.e4 Bg6 12.Be2 cb5 13.cb5 Qa5 14.Qa4 Qb6 15.0-0 Nbd7 16.Nd2 h6 17.Nc4 Qc7 18.b6 Nb6 19.Nb6 Qb6 20.Rb1 Qa6 21.f3 Nh5 22.d4 Nf4 23.Ba6 1-0. MASZTALERZ (2160) - NenadM (1910), Rated Classical game, lichess.org, 2016.

5.e3 Be6 6.Nf3 h6 7.d4 e4 8.Nfd2 d5 9.b5 c6 10.bc6 bc6 11.h3 Be7 12.Nc3 Nbd7 13.Be2 0-0 14.0-0 Rb8 15.Qc2 Qa5 16.Na2 Rb7 (16...c5!?=) 17.Bc3+= Qc7 18.cd5 cd5 19.Ba6 Ra7 20.Bb5 Rc8 21.Qb2 Nb6 The isolani on a4 becomes a target 22.a5 Nbd7 23.Rfc1 Qb7 24.a6 Qb8 25.Rab1 Ne8 26.Ba5 Rc1 (26...Nd6!? 27.Be2 Nc4 28.Nc4 dc4+/-) 27.Qc1+- (worse is 27.Rc1 Ra6 28.Qb3 Ra5 29.Bd7 Qb3 30.Nb3 Ra2 31.Be8 Kf8+=; 27.Nc1?! Nd6 28.Bf1 Qb2 29.Rb2 Kf8+/-) 27...Qa8 28.Nb4 Bb4 29.Bb4 Nc7 30.Bc6 Qd8 31.Ba5 Nb8 32.Bb7 (32.Bb7 Nba6 33.Ba6 Ra6 34.Bc7+-) 1–0. Fournier,Frederic (2080) – pbleo, Active, 2004.

5.e3 Be7 6.Nc3 0-0 7.Qc2 Be6 8.Nf3 Nbd7 9.Ng5 h6 10.Ne6 fe6 11.Be2 d5 12.b5 ab5 13.ab5 b6 14.0-0 Nc5 15.Ba3 d4 16.Bc5 Bc5 17.Ne4 Qe7 18.Ra6 Ra6 19.ba6 Rd8 20.d3 Ne4 21.de4 d3 22.Bd3 Ra8 23.Ra1 Qd8 24.Qa4 Qd3 25.Qc6 Qd8 26.Qe6 Kh8 27.Qe5 Qc8 28.g3 Ra6 29.Ra6 Qa6 30.Qc7 Qa1 31.Kg2 Qa2 32.Qc8 Kh7 33.Qf5 Kg8 34.Qe6 Kf8 35.Qc8 Ke7 36.Qc7 Kf6 37.e5 Ke6 38.Qg7 Qc4 39.Qg8 1-0. MASZTALERZ (2145) - jopa12345 (1885), Rated Classical game, lichess.org, 2016.

5.Nf3 Bg4 6.b5 Bf3 7.ef3= Nbd7 8.d4 ab5 9.ab5 Ra1 10.Ba1 Qa8 11.Bc3 Be7 12.Bd3 0-0 13.0-0 Re8 14.Re1 c6 15.bc6 bc6 16.Nd2 Qa3 17.Qc2 Rb8?? 18.Ra1+- (18.Ra1 Qa1 19.Ba1+-; 18.de5?! de5 19.Ne4 h6+=) 1–0. Trkn – guest5637, ICC, 2004.

5.b5 ab5 6.cb5 Nd4 7.e3 Ne6 8.Nf3 Bd7 9.d4 ed4 10.Nd4 Nf6 11.Bc4 Be7 12.0-0 0-0 13.a4 b6 (13...Nc5 14.Be2=) 14.Nf5 (14.Nd5 Nd4 15.Qd4 Be6+/-) 14...Nc5+= 15.Ne7 Qe7 16.Nd5 Nd5 17.Bd5 Ra5 18.Bc3 Ra7 19.Qd4 Qg5 20.g3 (20.f4!? Qh6 21.Rf3+/-) 20...Ne6 21.Qd2 Qg6 22.Bg2 (22.Rfc1 Nc5=) 22...Ng5 (22...Nc5 23.Qd1=+) 23.Qe2 (23.Rfc1 Ne4 24.Qc2 Nc5=) 23...Bh3 24.a5 ba5 25.Ra5 Ra5 26.Ba5 h5 (better 26...c5!?=) 27.Bc7+/- h4 (27...Bg2 28.Kg2 Ra8 29.b6 Qe4 30.f3+/-) 28.b6 (28.gh4 Bg2 29.hg5 Qg5-/+) 28...hg3 29.fg3 Re8? (better 29...Bg2 30.Qg2 Qe6+-) 30.b7 Bg2 31.Qg2 (31.Kg2? Qe4 32.Kf2 Qb7 33.Bd6 Nh3 34.Ke1 Qb3-+) 1-0. dannysmet (2060) - reul (1935), Rated Blitz game, lichess.org, 2020.

5.Nd5 Be6 6.e4 Bd5 7.cd5+= Na7 8.Nf3 Nh6 9.d4 ed4 10.Nd4 Qe7 11.f3 f5 12.Qa4+- Kd8 13.Ne6 Kc8 14.Rc1 c6 15.dc6 Nc6 16.b5 Qe6 17.bc6 b5 18.Bb5 fe4 19.Ba6 (19.Ba6 Ra6 20.Qa6 Kd8 21.c7 Ke7 22.0-0+-) 1–0. Wall,Bill (2365) – Dhali, Microsoft Gaming Zone, 1999.

4.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 a6 4.c4).

4.e3 Be6 5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 a6).

4.e3 Bf5 5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 a6).

4.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 a6).

4.e3 Nf6 5.Nf3 Be6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 a6).

4.e3 Nf6 5.Nf3 Bf5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 a6).

5.Nc3 c6 6.Nf3= h6 7.a3 Nbd7 8.d4 ed4 9.Nd4 Qc7 10.Bd3 Ne5 11.Be2 c5 12.Nc2 Be6 13.Nd5 Bd5 14.ed5 Qe7 15.0-0+/- Qd7 16.Re1+- Be7 17.bc5 Ng6 18.cd6 Qd6 19.Ne3 0-0 20.Nf5 Qf4 21.Ne7 Ne7 22.Qc1 Qd6 23.c5 Qd5 24.Bf6 gf6 25.Bf3 (25.Bf3 Qd7 26.Qh6+-) 1–0. woschkat – dbryant, net–chess.com, 2000.

5.Nc3 Be7 6.Nf3 Nc6 7.d4 ed4=+ 8.Nd4 Nd4 9.Qd4= 0-0 10.Bd3 Ng4 11.e5 Ne5–/+ 12.Qe4 g6 13.c5?? Bf5-+ 14.Qe3 Nd3 15.Kf1 Nb2 16.Nd5 Bf6 17.Nf6 Qf6 18.Rc1 Qe5 19.Qd2 Rfe8 20.g3 Bd3 21.Kg1 Qe2 22.Qe2 Re2 23.cd6 cd6 24.Rc7 Re1 25.Kg2 Be4 26.f3 Bf3! 27.Kf3 Rh1 28.Rb7 Rh2 29.Rb6 Nc4 30.Rc6 d5 31.a4 Rb2 32.Rc5 Rb4 33.Rd5 Ra4 34.Ke2 Ra3 35.g4 Re3 36.Kd1 Rb8 37.Rc5 Rb1 38.Kc2 Rb2 39.Kd1 Rd2 40.Kc1 Rc3 41.Kb1 Rb2 42.Ka1 Ra3# (42...Rc1#) 0–1. Kukel,Attila – Kokles,S, SVK–ch U12 Slovakia, 2000.

5.Nc3 Be7 6.Nf3 Bg4 7.Be2 h6 8.d4 ed4 9.Nd4+= Be2 10.Qe2 0-0 11.Nf5 Nh7 12.Nd5+- Bf6 13.0-0 c6? 14.Nf6 Nf6 15.Rad1 d5 16.ed5 cd5 17.Ne7 Kh8 18.Bf6 gf6 19.Qe3 Kh7 20.Nf5 (20.Nf5 Kg6 21.Rd5 Qd5 22.Qh6 Kf5 23.Qh5 Ke4 24.Qd5 Kf4 25.g3 Kg4 26.f3 Kh3 27.Qf5#) 1–0. marre – tocjo, internet, 2010.

5.a3 a5 6.Nc3 Be7 7.e4 ab4 8.ab4 Ra1=.

5.a3 e4 6.Nd4 c5 7.Nc2 Be6 8.e3 d5=.

5.Nc3 Bg4 6.d4 Nbd7 7.e4 Bf3 8.gf3 a5=.

5.d4 e4 6.Nfd2 d5 7.a3 dc4 8.Nc4 b5=.

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 a6 5.Nf3).

5.e3 Bf5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 a6).

4.a3 Be6 5.e3 g6 6.d4 Bg7 7.b5 Nb8 8.de5 de5 (8...Nd7 9.Nf3=) 9.Qd8 Kd8 10.Nc3 Ne7 11.0-0-0 (11.Nf3!? f6 12.Rd1 Nd7 13.Be2+=) 11...Nd7= 12.Nf3 Bg4 (12...f6 13.Nd5=) 13.Be2+= Ke8 (13...Kc8 14.h3 Bf3 15.Bf3+=) 14.h3 Be6 15.Ng5 h6 (15...Nf8!?+=) 16.Ne6+/- fe6 17.Ne4 Nf6 (better 17...a6+-) 18.Nc5 (18.Be5?! Ne4 19.Bg7 Rh7=) 18...b6 (18...Kf7 19.Nb7 e4 20.Be5+-) 19.Ne6 Kf7 20.Ng7 (20.Nc7 Rac8 21.Be5 Rhg8+-) 20...Kg7 (20...e4 21.f3 Kg7 22.fe4+-) 21.Be5 Rac8 22.Rd7 (22.Bf3 Kf7+-) 22...Kf7 23.Bf6 (23.Rc7 Rc7 24.Bc7 Rc8+-) 23...Kf6 24.Rhd1 Nf5 25.e4 (25.Bf3!? Nd6+-) 25...Nd6 26.Rd4 (better 26.Bg4 Ne4 27.R7d3+-) 26...Ke5?? (26...h5+-) 27.Rd5 Ke4 (27...Kf6 28.e5 Ke6+-) 28.Re7 Kf4 29.g3 1-0. Mely (2135) - espada_oro (1745), ChessWorld.net, 2017.

4.a3 Nf6 5.g3 h6 (5...Be7 6.Bg2=+) 6.Bg2= Be7 7.d4 ed4 8.Bd4 0-0 9.Nc3 (9.b5 Nc5=) 9...c5=+ 10.bc5 Nc5 (10...dc5 11.Be3=+) 11.e4 (11.Nf3 Be6=) 11...Qa5=+ 12.f3 Nfd7 13.Nge2 Nb6 14.Bc5 (better 14.0-0!?=) 14...dc5–/+ 15.Qb3 Be6 16.Qb5 Qb5 (16...Nc4!? 17.Qa5 Na5–/+) 17.cb5=+ a6 18.f4 Bg4 (18...Rfd8 19.ba6 Ra6 20.e5=+) 19.h3 Be2 (19...Bd7!? 20.Rb1 ab5 21.Nb5 Nc4=+) 20.Ke2+= a5 (20...ab5!? 21.Nb5 Ra5+=) 21.e5+- Rab8 22.Rhd1 Nc4 (better 22...Rfd8!?+-) 23.Rd7 Rfe8 24.Bb7 (better 24.a4+-) 24...f6?? (better 24...Nb6 25.Rad1 c4+=) 25.Bd5+- Kh8 26.Bc4 fe5 27.Bf7 Rf8 (27...ef4 28.Be8 Re8 29.gf4 Bg5 30.Kd3 Bf4+-) 28.Re7 ef4 29.gf4 Rb6 30.Re8 (better 30.Rg1+-) 30...Re8 31.Be8 Re6 32.Kd3 Re8 33.Kc4 Rc8 (33...Kg8 34.b6 Rf8 35.b7+-) 34.Na4 (34.b6 Kh7+-) 34...Rf8 35.Rf1 Rf5 (35...Rb8 36.b6 Kh7 37.Rb1+-) 36.b6 Rf8 37.Kc5 (37.Nc5 Rb8 38.b7 Kh7+-) 37...Rf5 38.Kc6 Rf8 (38...Rf8 39.b7 Kh7+-; 38...Rf6 39.Kc7 Rf7 40.Kb8+-) 0–1. Delboy Smith (1640) – Twodogsxx (2055), ChessWorld.net, 2019.

5.bc5 Nc5 6.d4 Qb6 7.Ra2 ed4 8.Bd4 Bf5 9.Nc3 Qa5 10.Nf3 Rc8 11.e3 Ne7 12.Qd2 Nc6 13.Nd5 Qd2 14.Rd2 b6 15.Bc5 dc5 16.Be2 Be7 17.Bd1 f6 18.Nh4 Be6 19.Bc2 g6 20.f4 Na5 21.f5 Bd5 22.cd5 Nc4 23.Rd3 g5 24.Nf3 b5 25.e4 Bd6 26.Kf2 g4 27.Nh4 Kf7 28.Rc3 Be5 29.Rb3 b4 30.ab4 Nd2 31.Rd3 Ne4 32.Ke3 cb4 33.Bb1 Rhe8 34.d6 Nd6 35.Ba2 Kf8 36.Be6 Nf5 37.Bf5 Bg3 0–1. Thoma,Theo – Blankenberg,Bruno, corr TKM/A008, 1999.

6.Nc3 f5 7.e3 Nf6 8.Be2 Ne6 9.Nh3 Be7 10.0-0 0-0 11.d3 g5 12.f3 f4 13.e4 h5 14.Nf2 Nd4 15.a4 g4 16.fg4 Ne2 17.Qe2 hg4 18.Nfd1 Qe8 19.b6 ab6 20.Nb5 Qh5 21.Nc7 Rb8 22.Nc3 Rf7 23.g3 f3 24.Qe3 Qh3 25.Rf2 Nh5 26.N7d5 Ng3 27.Ne7+/- Re7 28.Nd5 Ne2 29.Re2 Rg7 30.Rd2 g3 31.Kh1 Bg4 32.Nf6–/+ Kf7 33.Ng4=+ g2 34.Kg1 Rg4 (35.Qf3 Qf3-+) 0–1. Pleschke,Helmut – Blankenberg,Bruno, 3. B4 Thementurnier, 2000.

6.Nc3 f5 7.e3 Nf6 8.Nf3 Be7 9.Be2 Ne6 10.0-0 0-0 11.Nd5 Nd5 12.cd5 Nc7 13.Bc4 e4 14.Ne1 Bf6 15.Qc2 b6 16.d3 a6 17.ba6 b5 18.Ba2 Ba6 19.f4 Bb2 20.Qb2 ed3 21.Nd3 b4! 22.Rfd1 b3! 23.Qb3 c4 24.Qc3 cd3 25.Rac1 Qe7 26.Qc7? Qe3 27.Kh1 Rac8 (28.Qc6 Bb7-+; 27...Qf4?! 28.Qd7–/+) 0–1. Kleine,Joachim – Blankenberg,Bruno (1960), T0003 DESC, 2000.

6.Nc3 f5 7.e4 Nf6 8.Bd3 f4 9.Nf3 Be7 10.Bc2 Be6 11.Qe2 0-0 12.0-0 Ng4 13.a4 g5 14.a5 Nh6 15.Ra3 g4 16.Ne1 Bg5 17.Qd3 Ne8 18.a6 b6 19.Nd5 Ng7 20.Rb3 Nh5 21.Rc3 f3 22.g3 Nf6 23.h4 Bh4 24.Qe3 Nf7 25.gh4 Nd5 26.ed5 Qh4 27.Nf3 gf3 28.Qf3 Kh8 29.Qe4 Rg8 30.Rg3 Bg4 31.Bd1 Rg7 32.Bg4 Rag8 33.Kg2 Rg4 34.Qd3 Nh6 35.Rh1 Qg5 36.Kf1 Rg3 37.fg3 Nf5 38.Ke1 Qg3 39.Qg3 Ng3 40.Rh6 Rf8 41.Kd1 Nf5 42.Rd6 Nd6 43.Be5 Kg8 44.Bd6 Rc8 45.Ke2 Kf7 46.Kf3 Kf6 47.Kg4 Rg8 48.Kh4 Kf5 49.d3 Rg4 50.Kh3 Rg8 51.Kh4 Kf6 52.Kh5 h6 53.Bc7 Ke7 54.Kh6 Kd7 55.Kh7 Re8 56.Bf4 Rf8 57.Be5 Rf3 58.Kg6 Kc8 59.d4 cd4 60.Bd4 Rf4 61.Be5 Rc4 62.Kf5 Kd7 63.Bb8 Rc5 64.Ke5 Rb5 65.Ba7 Rb2 66.Bb8 Ra2 ½–½. Woelfelschneider,Peter – Blankenberg,Bruno, Tiger SC, 2000.

6.d3 Ne6 7.g3 g6 8.Bg2 Bg7 9.Nf3 Ne7 10.0-0 f5 11.Nc3 0-0 12.Qd2 g5 13.Ng5+/- Nd4 14.Rab1 h6 15.Nf3 Kh7 16.e3 Ne6 17.Qc2 Bf6 18.Nd2 Rb8 19.Nd5 Nd5 20.Bd5 b6 21.d4 Nc7 22.de5 de5 23.Bg2 e4 24.Bf6 Qf6 25.Rbd1 Qg5 26.Kh1 Qh5 27.f3 (27…ef3 28.Nf3+-) 1–0. Myrberg,Johnny – Blankenberg,Bruno, TKM/SF/02, 2001.

6.e3 b6 7.Nf3 Nf6 8.Be2 Ne4 (8...e4!? 9.Ng1 d5=) 9.d3 Nf6 10.0-0 Be7 11.Nc3 0-0 12.Ne4 Ne4 13.de4 a5 14.a4 Ne6 15.Nd2 Ng5 16.f4 Ne6 17.fe5 de5 18.Be5 f6 19.Bb2 Ng5 20.e5 fe5 21.Be5 Bf6 22.Bf6 Rf6 23.Nf3 Nf3? (better is 23...Rd6!? 24.Qc2 Bb7+/-) 24.Bf3+- (worse is 24.gf3 Rd6 25.Qe1 Bh3+=; 24.Rf3?! Rd6 25.Qe1 Bb7+=) 24...Qd1 (24...Rd6 25.Ba8 Rd1 26.Rad1 Qe8+-) 25.Rad1 (25.Bd1?! Be6 26.Rf6 gf6+/-) 25...Re6 (25...Rb8 26.Rd8 Kf7+-) 26.Ba8 Re3 (26...Re8 27.Bc6 Bg4 28.Be8 Bd1 29.Rd1 Kf8+-) 27.Rd8 Re8 28.Re8 1–0. Fournier,Frederic – nn3flores, Active, 2009.

6.e3 Ne6 7.d3 g6 8.g3 Bg7 9.Bg2 f5 10.Ne2 Nf6 11.Nbc3 0-0 12.0-0 Rb8 13.Nd5 b6 14.Nf6 Bf6 15.Bd5 Qd7 16.Nc3 Bb7 17.a4 a5 18.ba6 Ba6 19.Qd2 Bb7 20.Rab1 Bg7 21.Ba1 Bd5 22.Nd5 Qa4 23.Nb6 Qa7 24.Nd5 Rb1 25.Rb1 Nc7 26.Nc3 Rb8 27.Rb8 Qb8 28.e4 fe4 29.de4 Qa8 30.Bb2 Qb7 31.Bc1 Bf8 32.Qd1 Ne6 33.Kg2 Nd4 34.Qg4 Qf7 35.Nd5 Ne6 36.Bd2 Bg7 37.h3 h6 38.Ba5 Kh7 39.Qe2 ½–½. Bendig,Frank – Blankenberg,Bruno, TKM/SF/02, 2001.

6.e3 f5 7.d4 Qe7 8.Be2 g6 9.de5 de5 10.Nf3 Bg7 11.Nbd2 Nh6 12.0-0 0-0 13.Qc2 Nf7 14.Rad1 Rd8 15.Nb3 Be6 16.e4 f4 17.Nc1 Bg4 18.Rfe1 Bf3 19.Bf3 Ne6 20.Rd5 Nd4 21.Qd1 Nd6 22.Qd3 Ne8 23.a4 Nf6 24.Rd8 Rd8 25.Qc3 g5 26.Bd1 g4 27.Nb3 b6 28.a5 Qe6 29.Kh1 Qf7 30.Nd2 Qh5 31.a6 Bh6 32.f3 Qh4 33.Rf1 Nh5 34.Kg1 Ng3 35.Re1 Nh1 36.Nf1? Nf2-+ 37.Be2 Rd6 38.Ba1? Rg6 39.fg4? Ne4-+ 40.Qd3 Qf2 41.Kh1 Ng3! 42.hg3 Bg5 43.Nh2 Qe1 44.Bf1 Qa1 45.gf4 Bf4 46.g5 Bh2 47.Kh2 Qc1 48.Qh3 Qf1 49.Qc8 Qf8 (50.Qf8 Kf8-+) 0–1. Walther,Manfred (1890) – Blankenberg,Bruno (1960), T0003 DESC, 2000.

6.g3 f5 7.Bg2 Nf6 8.Qa4 Qd7 9.Nc3 Be7 10.d3 0-0 11.e3 Bd8 12.Nge2 Qf7 13.0-0 Qh5 14.h3 f4 15.ef4 Bh3 16.f3 Ne6 17.fe5 de5 18.Bc1 Bc7 19.Kf2?? Ng4-+ (20.Ke1 Bg2-+) 0–1. Jakobi,Axel – Blankenberg,Bruno, 2. B4 Thementurnier, 2000.

5.d3 a6 6.Nf3 ab5 7.cb5 Na4 8.Ba3 Nf6 9.d4 e4 10.Nfd2 Be7 11.e3 h6 12.Be2 d5 13.Be7 Qe7 14.0-0 0-0 15.Nb3 Bd7 16.Qc2 Rfc8 17.Nc3 Nc3 18.Qc3 b6 19.Rfc1 Ne8 20.h3 Qg5 21.Kh1 Nd6 22.a4 Ra7 23.Nd2 Rca8 24.Bd1 Nf5 25.Bc2 Nh4 26.Rg1 Rc8 27.Bb3 c6 28.bc6 Rc6 29.Qb2 Rg6 30.f4 ef3 31.Nf3 Nf3 32.gf3 Qh5 33.Rg6 fg6 34.Qh2 Kh7 35.Kg2 Qf5 36.Ra2 Ra5 37.Bc2 Qe6 38.Qg3 b5 39.h4 ba4 40.h5 Be8 41.Qc7 Ra6 42.Qc3 Qf6 43.hg6 Bg6 44.Bg6 Qg6 45.Kf2 Rc6 46.Qd2 h5 47.Qe1 h4 48.Kf1 Qf5 (49.f4 Qh3 50.Ke2 Qh2 51.Qf2 Qf2 52.Kf2 Ra6–/+) 0–1. Beutel,Heinrich – Blankenberg,Bruno, 2. B4 Thementurnier, 2000.

5.e3 Bf5 6.d3 Nf6 7.Nf3 h6 8.Be2 Be7 9.0-0 0-0 10.Re1 e4 11.de4 Nfe4 12.Nbd2 Bf6 13.Bf6 Qf6 14.Ne4 Ne4 15.Nd4 Nf2 16.Qc1 Nd3 17.Bd3 Bd3 18.a4 Rfe8 19.Qc3 Be4 20.Rf1 Qg5 21.Nf3 Bf3 22.Rf3 Qe5 23.Qe5 Re5 24.Kf2 Re4 25.Rc1 Rae8 26.Rc3 Rh4 27.h3 Ree4 28.g4 h5 29.Rf4 Rf4 30.ef4 hg4 31.hg4 Rg4 32.Kf3 Rh4 0–1. Gabriele – mike0072000, playchess.de, 2001.

4.a3 Bb7 5.d3 g6 6.Nf3 Bg7 7.e4 Ne7 8.Be2 0-0 9.0-0 f5 10.Nbd2 Nd7 11.Ng5 Rf6 12.ef5 Nf5 13.Nde4+/- h6 14.Nf6+- Nf6 15.Ne6 Qd7 16.Ng7 Kg7 17.Bf3 Bf3 18.Qf3 Rf8 19.Rfe1 Nh4 20.Qg3 g5 21.h3 Nf5? 22.Qf3+- Nh4 23.Qg3 Nf5 24.Qf3 Nh4 25.Qe2 Qc6 26.f3 Nf5 27.Rad1 Nh5 28.d4 Nf4 29.Qf2?? Kg6?? 30.de5 Qc4 31.ed6 Nd3 32.Rd3! Qd3 33.Re6 Kh7 34.dc7 Qd1 35.Re1 Qd7 36.Be5 Re8 37.Qc2 Kg8 38.Rd1 Qc8 39.Qc4 Kf8 40.Qd5 Ne3 41.Qd6 Kg8 42.Qg6 (42.Qg6 Kf8 43.Qg7#) 1–0. tightfist (2205) – grashleigh (2200), net–chess.com, 2007.

4.a4 Nf6 5.a5 Be7 6.ab6 cb6 7.d4 Bb7 (7...0-0 8.e3=+) 8.de5 (8.e3 0-0=) 8...de5=+ 9.Qd8 Bd8 (9...Kd8!? 10.b5 Bb4 11.Nd2 Ne4=+) 10.Be5+= Nbd7 11.Bc3 Ne4 12.Nf3 (12.Bg7!? Rg8 13.Bd4+/-) 12...Nc3+= 13.Nc3 Bf3 (13...a5!? 14.ba5 Bf6=) 14.ef3+/- 0-0 (14...a5 15.Kd2+/-) 15.Be2 (15.0-0-0 Bf6 16.Ne4 Rfd8+/-) 15...Bf6+= 16.0-0-0 (16.Kd2!?+=) 16...Bc3= 17.Rd7 Bb4 18.Rhd1 a5 19.Kc2 (19.Bd3 a4=) 19...Bc5 20.Rb7 (20.f4 Bf2 21.Bf3 Rac8=+) 20...Bf2 21.Rdd7 a4 (21...Bc5 22.f4=+) 22.Kb2 (22.Ra7 Ra7 23.Ra7 b5=) 22...Rac8 (22...a3 23.Ka2-/+) 23.Ra7 (23.Ka3 Rce8 24.Bd1 Ra8 25.Ba4 Bc5 26.Kb3 Rfe8=) 23...b5=+ 24.cb5 (24.Ra5!? Rfe8 25.Bf1 bc4 26.Ra4 c3 27.Kc2=) 24...Ba7-/+ 25.Ra7 Ra8 (25...Rfd8 26.Ka3 Rd4 27.Ra4 Ra4 28.Ka4=+) 26.Rc7 (better 26.Ra6!?=+) 26...a3-+ 27.Ka2 Rfc8 (27...Rfd8 28.Rc2-+) 28.b6? (better 28.Rc8 Rc8 29.Bd3=+) 28...Rc7-+ 29.bc7 Rc8 30.Ka3 Rc7 31.Kb3 g6 32.Kb2 h5 33.Kb3 Kg7 34.Bc4 f5 (34...Kf6 35.Kc3-+) 35.Kc3 (35.f4 h4-+) 35...Kf6 (35...f4 36.h4-+) 36.Kd3 (36.f4 g5 37.fg5 Kg5-+) 36...Ke5 37.Bg8 (37.Kc3 g5-+) 37...Kf4 38.Ke2 (38.Bd5 Rd7 39.Kc4 Rd5 40.Kd5 h4-+) 38...Re7 (better 38...Rc2 39.Kf1 Ke3 40.g3-+) 39.Kf2 h4 (39...g5 40.Bc4-+) 40.Bc4 (40.g3 Kg5-+) 40...g5 41.Be2 Re3?? (better 41...Ke5-+) 42.g3+- hg3 43.hg3 Ke5 44.Ke3 f4 45.gf4 gf4 46.Kd3 Kd5 47.Bf1 (47.Bd1!? Ke5+-) 47...Ke5 48.Bh3 Kd5 49.Bg4 (49.Bf5 Ke5 50.Bd7 Kd5+-) 49...Ke5 50.Kc4 Kf6 51.Kd4 Kg5 52.Ke4 Kh4 53.Kf4 ½-½. bulletmaniac (2225) – yeditepeli, Rated Blitz tournament, lichess.org, 2016.

4.b5 a6 5.d4 ed4 (5...e4 6.Nc3=) 6.Nf3 c5 7.bc6 Nc6 8.Nd4 Nd4 9.Bd4 Nf6 10.Qb3 (10.Nc3 d5 11.Rb1 dc4 12.Rb6 Nd5 13.Nd5 Qd5+=) 10...Rb8 (10...d5 11.Bb6 dc4 12.Bd8 cb3 13.Bf6 ba2 14.Nc3 gf6 15.Nd5=+) 11.Nc3 b5 (11...Be7 12.Qa4 Qd7 13.Qd7 Kd7 14.Rb1+/-) 12.cb5 ab5 13.e4 b4 (13...Bd7 14.Rb1 Be7 15.Bb5+/-) 14.Bb5+- Bd7 15.Bf6 Qf6 16.Bd7 Kd7 17.Rc1 Be7? ( 17...Qe6 18.Qa4 Kd8+-) 18.Nd5 Qe6 (18...Qd4 19.Rc7 Kd8 20.Re7 Re8 21.Re8 Ke8+-) 19.Qa4 Kd8 20.Qa5 Ke8 21.Nc7 Kf8 22.Ne6 fe6 23.Rb1 (23...Kf7 24.Rb4+-; 23.Rc4 g6 24.Qa7 Re8 25.Rb4 d5+-) 1–0. Trkn – wagondog, ICC, 2004.

4.b5 c5 5.bc6 Nc6 6.e3 Be7 7.d4 Bf6 8.d5 Nce7 9.Nd2 Nh6 10.Ne4+= Ng6 11.Ba3 Be7= 12.Nf3 Nf5 13.g4 Nfh4 14.Nfd2 0-0 15.Nc3 a6 16.Bb2 h6 17.Bd3 Nh8 18.Ne2 Bg4–/+ 19.Qc2 N4g6 20.f4 Bf6 21.f5–/+ Be2 22.Ke2 Ne7 23.Rhg1 Rc8 24.Rg2 b5 25.a3? Nd5!-+ 26.Rag1 bc4 27.Bc4 Rc5?? 28.Qe4?? Nf4?? 29.ef4 ef4?? 30.Bf6 Qf6+- 31.Rg7 Qg7 32.Rg7 Kg7 33.Qf4 Re5 34.Kf3 Rg8 35.Ne4 Ra5 36.f6 Kh7 37.Qd6 Rf5 38.Ke3 a5 39.Bd3 Ng6 40.Qd7 Rf8 41.Qf5 (41.Qf5 Re8 42.Qd7 Rf8 43.Nd6 Kg8 44.Bg6 h5 45.Bf7 Kh8 46.Bg6 Rf7 47.Nf7 Kg8 48.Qe8#) 1–0. Trokenheim,Marek – Hallberg,Sylve, Stockholm, 1982.

4.Qc2 Bb7 5.e4 Nd7 6.d4 Ngf6 7.d5 Be7 8.Ne2 Rc8 9.a4 a6 10.Nbc3 0-0 11.Ng3 Ng4 (11...c6!?=) 12.Be2+= Nh6 13.0-0 Bh4 14.Qd3 a5 15.Ba3 ab4 16.Bb4 Qg5 17.Nd1 (17.a5 ba5 18.Ra5 Ra8+=) 17...Qe7 18.Bd2 (18.a5 ba5 19.Ra5 Ra8+=) 18...Bg5= 19.Ne3 Nc5 20.Qc2 Qd7 Exerts pressure on the isolated pawn (20...Ra8 21.a5 ba5 22.Nef5 Nf5 23.Nf5=) 21.Ra3 Ra8 The pressure on the isolated pawn grows 22.Rfa1 Ba6 (22...Bf4 23.Nh5=) 23.Bc3 Bf4 24.Ngf5 Be3 25.Ne3 f5 26.ef5 Nf5 27.Bd2 Nd4+= 28.Qd1 Rf6 29.Ng4 Rg6 30.Rg3?? Ne4-+ 31.Bd3? Ng3 32.Bg6 Nge2 33.Kh1 Qg4 (33...Qg4 34.Bd3 e4-+; worse is 33...hg6 34.Ne3-+) 0–1. Olsen,Rolf – Henriksen,Ivar, Karasjok op1, 2004.

4.Qc2 Nf6 5.b5 Nbd7 6.e3 Bb7 7.Nc3 Be7 8.d4 a6 9.a4 ab5 10.ab5 Ra1–/+ 11.Ba1 Qa8 12.Qa4 Bg2 13.Qa8 Ba8 14.d5 0-0 15.Nh3 Bb7–/+ 16.Be2 Ra8 17.Bb2 Bc8 18.0-0 Nc5 19.Ng5 h6 20.Nf3–/+ Nfe4 21.Ne4 Ne4 22.Ra1 Ra1 23.Ba1 Bg4 24.Kf1 Bf3 25.Bf3 Nd2 26.Kg2 Nc4 27.Bc3 Na5 28.Be4 g6 29.Bc2 f5 (29...f5 30.Ba5 ba5–/+; 29...Nb7 30.f4 ef4 31.ef4-+) 0–1. Fischer,Diana – Kuhbier,W, BdF, 1982.

4.Nc3 a6 5.Nf3 Nf6 6.a3 Be7 7.e4 0-0 8.Be2 Bb7 9.d4 Ne4 10.Ne4 Be4 11.Bd3 Bd3=+ 12.Qd3 ed4 13.Nd4 Re8 14.0-0=+ Bf6 15.Rab1 d5 16.Qf3 c6 17.c5 Nd7 18.Nc6= Qc7 19.Qd5 Bb2 20.Rb2 Nf6 21.Qd6 Qd6?? 22.cd6+- Kh8 23.Rd1 Nd5?? 24.Rbd2 Nc3 25.d7 Rf8 26.Re1 Nb5 27.Re8 Rfe8= ½–½. Dopper,Johan – Stoel, corr, 1994.

4.Nc3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.Nc3 b6).

4.c5 Bb7 5.Nf3 Nf6 6.Qc2 Be7 7.cd6 cd6 8.Nc3 Nc6 9.b5= Na5 10.e4 Rc8 11.Bd3 0-0 12.0-0= Qd7 13.Nh4 Ne4 14.Be4+/- Bh4 15.Bh7 Kh8 16.Bf5 Qe7 17.Bc8 Rc8 18.d3 Qg5 19.f4 ef4+= 20.Qe2 Qc5 21.Kh1+/- Bg5 22.Qg4+- f6 23.Ne4 Be4 24.de4 Qb4?? 25.Qc8 (25.Qc8 Kh7 26.Qf5 Kg8 27.Rac1+-) 1–0. mrkt – bakum, kurnik, 2007.

4.c5 Nf6 5.e3 Bg4 6.Be2 h5 7.Bf3 c6 8.Na3 Bf3 9.gf3 Na6 10.b5 Nc5 11.bc6 Nd3 12.Ke2 Nb2 13.Qb3 d5 14.Qb2 Qc7 15.Nb5=+ Qc6 16.Rc1 Qc1?? 17.Qc1+- Bc5 18.Nc7 Kd7 19.Na8 g5 20.Nc7! Kc7 21.d4 ed4 22.ed4 Re8 23.Kd3 Nd7 24.dc5 Nc5 25.Kd4 Kd6 26.Qa3 a5 27.Nh3 f6 28.Rc1 Rc8 29.f4 Ke6 30.fg5 fg5 31.Ng5 Kf6 32.h4 Ne6 33.Ne6 Rc1 34.Qc1 Ke6 35.Qh6 Kd7 36.Qh5 (36.Qh5 Kc6 37.Qd5 Kc7 38.h5 Kb8 39.h6 Ka7 40.h7 b5 41.Qc5 Ka6 42.h8Q b4 43.Qhc8; 36.Kd5 Ke7 37.Qg7 Ke8 38.Kd6 b5 39.Qe7) 1–0. bentengutama (1900) – valerypavlovich (1860), net–chess.com, 2003.

4.d3 a6 5.Nf3 Nf6 6.a4 Bb7 7.e4= Be7 8.g3 0-0=+ 9.Bg2 Nbd7 10.0-0= Ne8 11.Nc3 f5 12.ef5 Rf5 13.Nh4 Bg2= 14.Ng2 Rf8 15.Ne4 Nef6 16.Nf6 Nf6 17.b5 Qc8 18.Qe2 Qf5 19.f4 e4 20.de4 Qe4 21.Qe4 Ne4 22.Rfe1 Bf6 23.Bf6 Nf6= 24.Re7 ab5 25.cb5 Rfc8 26.Ne3 g6 27.Nc4 Kf8 28.Re2 Re8 29.Re8 Re8 30.h3 Re4 31.Rc1 d5 32.Ne5 Ra4 33.Rc7+= Rb4?? 34.Rf7+- Kg8 35.Rf6 Rb5 36.Nd7 Rb1 37.Kf2 b5 38.Rd6 Rd1 39.Rd5! Rd5 40.Nf6 Kf7 41.Nd5 Kg7 42.Ke3 h6 43.Ke4 Kf7 44.Ke5 h5 45.h4 Kg7 46.Ke6 Kh6 47.Kf6 Kh7 48.f5 gf5 49.Kf5 Kh6 50.Kf6 Kh7 51.Kg5 Kg7 52.Kh5 Kh7 53.g4 Kg7 54.Kg5 Kh7 55.Kf6 Kh6 56.h5 Kh7 57.g5 Kg8 58.g6 Kh8 59.h6 Kg8 60.g7 b4 61.Kg6 (61.Kg6 b3 62.h7#) 1–0. hal1958 – XANDERKIRV, playchess.de, 2003.

4.d3 Be6 5.Nc3 Nf6 6.g3 Be7 7.Bg2= c6 8.Nf3 h6 9.0-0 d5 10.cd5+/- Nd5 11.Nd5 Bd5 12.e4 Be6 13.Be5 Nd7? 14.Bg7+- Rg8 15.Bh6 Nf6 16.a3 Rc8 17.h4 Nh5 18.Ng5 Bg5 19.Bg5 Rg5 20.hg5 Qg5 21.Rc1 Ke7 22.d4 Rh8 23.Rc6 Ng3 24.fg3 Qg3 25.Qf3 Qh2 26.Kf2 Qh4 27.Qg3 Qf6 28.Ke3 Qh6 29.Kd3 Bd7 30.Rh6 (30.Rh6 Rh6 31.Qg5 f6 32.Qg7 Kd8 33.Rc1 Bb5 34.Ke3 Rh7 35.Qf6 Ke8 36.Qe6 Kf8 37.Rc8 Be8 38.Re8 Kg7 39.Rg8#) 1–0. Bonetti,Shane – zadoq, ICC, 2002.

4.d4 Nd7 5.e4 Bb7 6.d5 Ngf6 7.Nc3 c6 8.Qa4 cd5 9.ed5 Be7 10.Nf3 0-0 11.Bd3 h6 12.h3 Nh7 13.Qc2+= Ng5 14.Ng5 Bg5+= 15.g3 a6 16.h4 Be7= 17.Kd2 Nf6 18.Rag1 Bc8 19.Ne4 Ne4 20.Be4 f5 21.Bf3 Rb8 22.c5? bc5-+ 23.bc5 dc5?? 24.Be5=+ Bb7?? 25.Qc4?? Bd6=+ 26.Bf4 Qf6 27.Re1 Bf4–/+ 28.gf4 Qb2 29.Kd3 Qf2 30.d6 Kh8-+ 31.Bb7 Rb7 32.Re2?? Qf3 33.Kc2 Qh1 34.Kc3 Qc1 35.Rc2 Qe3 36.Qd3 Qd3 37.Kd3 Rd7 38.Rc5 Rd6 39.Kc4 Rfd8 40.Rf5 Rb6 41.Re5 Rc6 (41...Rc6 42.Rc5 Rc5 43.Kc5 Rf8-+) 0–1. bentengutama (1955) – mpopp (1845), net–chess.com, 2003.

4.e3 Ba6 5.Nf3 (5.d4 ed4 6.b5 Bb7 7.ed4 d5=) 5...Be7 (5...Bb7 6.d4+=) 6.d4 Bf6 (6...Bb7!?+=) 7.de5+- de5 8.Qd8 Bd8 (8...Kd8 9.Ne5 Ke8 10.Bc3+-) 9.Be5+- f6 (9...Nf6 10.Nc3+-) 10.Bg3 Nd7 (10...Bb7 11.Nd4+-) 11.Nc3 Be7 (11...c5+-) 12.Nd5 Bd8 13.Bc7 (worse 13.Nc7 Bc7 14.Bc7 Rc8+-) 13...Ne7 (13...Rc8 14.Bd8 Kd8 15.Nd4+-) 14.Bd8 Nd5 15.cd5 Bf1 16.Rf1 Rd8 17.Nd4 Ne5 18.Ne6 Rd5 (18...Rd6+-) 19.Nc7 Kf7 20.Nd5 Rd8 (20...Rc8 21.Rd1+-) 21.0-0-0 (21.Rd1 Rc8+-) 21...Rc8 (21...b5 22.Kb2+-) 22.Kb2 h5 (22...b5 23.Kb3+-) 23.Kb3 b5 24.f4 Ng4 (24...Nc4 25.e4+-) 25.h3 Nh6 26.Rc1 Rd8 (26...Rc1 27.Rc1 Nf5 28.Rc7 Ke6 29.e4+-) 27.Rc7 Kf8 28.Rd1 a6 29.e4 Nf7 (29...Ng8 30.Rdc1 Nh6 31.Ra7+-) 30.Ra7 Rd6 31.Rc1 (31.Ra8!? Rd8 32.Ra6 f5+-) 31...f5 (31...Nd8 32.Rcc7 f5 33.Rg7 fe4 34.Rh7+-) 32.Rcc7 Nd8 33.Rg7 h4 34.Rh7 Kg8 35.ef5 Rd5 (35...Nf7 36.Raf7 Rd5 37.Rfg7 Kf8 38.f6 Rd3 39.Kc2 Rd2 40.Kd2 a5 41.Rh8) 36.Rag7+- Kf8 37.f6 (37.f6 Rd3 38.Kc2 Rd2 39.Kd2 Nf7 40.Rf7 Kg8 41.Rfg7 Kf8 42.Rh8) 1–0. michaelbuss (2810) – dcbrotha76 (1885), ChessWorld.net, 2013.

4.e3 Nc6 5.a3 Nf6 6.Nf3 Be7 7.Be2 0-0 8.0-0 a5 9.Nc3 (better is 9.b5!? Nb8 10.d4+=) 9...ab4–/+ 10.ab4 Be6 (better is 10...Ra1!? 11.Qa1 Nb4+=) 11.b5= Nb4 12.Ba3 c5 13.bc6 e4? (better is 13...Nc6!? 14.d4 ed4 15.Nd4 Na5+=) 14.Bb4 ef3 15.Bf3 Bc4?? (15...Ra1 16.Qa1 Bc4 17.Rc1+-) 16.d3 (better is 16.c7 Qc7 17.Ba8 Bf1 18.Qf1+- (18.Kf1?! Qc4 19.Kg1 Qb4+/-)) 16...Bb5?? (better is 16...Ra1 17.Qa1 Bd3+-) 17.Nb5 (17.Nb5 Rc8 18.Qb3+-) 1–0. Fournier,Frederic – nosemeocurrio(C), Active, 2004.

4.e3 Bd7 5.Ne2 a6 6.d4 ed4 7.Bd4 Nf6 8.Nbc3 Be6 9.Nf4+= Be7 10.Ne6 fe6 11.Ne2 0-0 12.Nf4 e5 13.Qf3 e4= (13...e4 14.Qh3 Rf7=). mr (2260) – tata (2035), net–chess.com, 2009.

4.e3 e4 5.Nc3 Bb7 6.f4 (6.Qa4 Nd7+=) 6...f5 (6...Be7 7.d4=) 7.Nge2 (7.Nd5 Bd5 8.cd5 c6+=) 7...Nc6 8.b5 Nb4 9.Nc1 (9.Nd4 Ne7+=) 9...Nd3 (9...a6 10.Qh5 g6 11.Qd1=) 10.Nd3 (10.Bd3 ed3 11.0-0 Be4+/-) 10...ed3 11.Nd5 (11.Qh5 g6 12.Qh3 Bg7 13.Bd3 Qe7+/-) 11...a6+- 12.a4 ( 12.Qh5!? g6 13.Qh3 Bd5 14.Bh8 Bc4 15.Qh7+-) 12...Ne7+= 13.Qh5 g6 14.Qf3 Bd5 15.cd5 Rg8 16.Bd3 a5 (16...Bg7 17.Bg7 Rg7 18.0-0+-) 17.Bc4 Bg7 18.Bg7 Rg7 19.g4 Kd7 20.g5 Qh8 21.d4 Re8 22.0-0-0 h6 23.h4 h5 24.Rhe1 Rf7 25.Bb3 Rff8 26.Qe2 Rf7 (26...Kc8 27.Qc4+/-) ½–½. Rush,Bradley – Thomas,Simon, IECG Cat–C, 1995.

4.e3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be7 4.c4 b6).

4.e4 Bb7 5.d3 Be7 6.b5 Bf6 7.g3 Ne7 8.Bg2 Ng6 9.Ne2 Nd7 10.0-0 0-0 11.Nbc3 h5 12.Nd5 Bd5 13.cd5 h4 14.f4 hg3 15.hg3 ef4 16.Bf6 Qf6 17.gf4 Nh4 18.Bh3 Nc5 19.Kh2 g6 20.Rc1 Kg7 21.Kg3 Rh8 22.Qc2 Nf5 23.Bf5 Qh4 24.Kf3 gf5 25.Rg1 Kf8 26.Ng3 Ke7 27.Nf5 Kd7 28.Nh4 Rh4 29.d4 Rh3 30.Rg3 Rg3 31.Kg3 Ne4 32.Qe4 Normal 1-0. banjoband (2160) - parvizmo (1910), Rated Blitz game, lichess.org, 2015.

4.e4 c5 5.b5 a6 6.a4 Nf6=+ 7.Nc3 ab5 8.ab5= Ra1 9.Qa1 g6 10.h3 1–0. alaamattar (2205) – enigma (2000), net–chess.com, 2005.

4.e4 Nc6 5.b5 Nd4 6.Nf3 Ne6 7.d3 Be7 8.Be2 a6 9.0-0 ab5 10.cb5 Bd7 11.a4 Nc5 12.d4 ed4 13.Nd4 Bf6 14.Nc6?? Bc6-+ 15.Bf6? Qf6 16.bc6 Qa1 17.Qd5 Nf6 18.Qf5 0-0 19.Nd2 Qa4 20.Nf3 Qe4 21.Qe4 Nfe4 22.Bb5 Ra2 23.h3 Rfa8 24.Nd4 Ra1 25.Nf5 Rf1 26.Kf1 Ra1 27.Ke2 Ra2 28.Kf3 Rf2 29.Kg4 Rg2 30.Kh4 g5 31.Kh5 Ng3 32.Kg4 Nf5 33.Kf5 h6 34.Kf6 Rh2 35.Bf1 Rf2 36.Ke7-+ Rf1 37.Kd8 Ne6 38.Kd7 Kf8 39.Kc8 b5 40.Kb7 b4 41.Kc8 b3 42.Kb7 b2 43.Kb8 b1Q 44.Kc8 Qb6 45.h4 Ra1 46.Kd7 Qb8 47.hg5 Qd8# (47...Qe8#) 0–1. guest864 – BobA, ICC, 1999.

4.e4 Be6 5.d4 ed4 6.Bd4 f6 7.g3 Nd7 8.Nc3 Ne5 9.Nd5 c6 10.Be5 de5-+ 11.Ne3 Bb4 12.Ke2 Qd1 13.Rd1–/+ Bc5 14.Kf3 Ne7-+ 15.Be2 Kf7 16.Kg2 Rhd8 17.Nf3 Be3 18.fe3 c5 19.Nd2 Nc6 20.Nb1 Nb4 21.Nc3 Rd7 22.a3 Rd1 23.Rd1 Nc2 24.Kf2 Na3 25.Nd5 Nc2 26.Rc1 Nb4 27.Ra1 Bd5 28.ed5 Ke7 29.Bf3 Kd6 30.e4 g6 31.g4 a5 32.Bd1 Na6 33.Ba4 Rf8 34.Rg1 Nb4 35.Ke3 Na6 36.h4 Nc7 37.Rb1=+ Rb8 38.Rf1 Ke7 39.d6 Kd6-+ 40.Rf6 Ke7 41.Rf1 Rd8 42.Bc6 Ne6 43.Rb1 Rd6 44.Bd5 Kd7 45.Rf1 Nf4 (45...Nf4 46.g5 Ke7-+ (46...Nd5?! 47.ed5 Kc7 48.Ke4=+)) 0–1. Ljungstroem,Bengt – Oefwerberg, Huddinge Sweden, 1982.

4.Nf3= Be7 5.Nc3 Nf6 6.d4 e4 7.Ng5 Bb7 8.d5 e3 9.fe3 Ng4 10.Qd4 Bg5 11.Qg4 0-0 12.Ne4+/- h6 13.h4 f5+= 14.Qg3 fe4 15.hg5 Qg5 16.Qg5 hg5 17.Rh5 g4 18.Rg5 Rf7 19.Rg4 Nd7 20.Re4 Nf6 21.Bf6 Rf6 22.Rf4 Rh6 23.g3 Rg6 24.Kf2+- Rh6 25.Bg2 Re8 26.Rh1 Rg6 27.b5 Rg5 28.Bh3 Bc8 29.Bc8 Rc8 30.e4 Re8 31.Kf3 Ra8 32.Rfh4 Rf8 33.Kg2 Rf6 34.Rh8 Kf7 35.Rc8 Rfg6 36.Rf1 Ke7 37.Rf3 Kd7 38.Ra8 Re5 39.Ra7 Re4 40.Rf7 Re7 41.Re7 Ke7 42.Rc7 Kd8 43.Rc6 Kd7 44.Rb6 Rg4 45.Rc6 Rd4 46.b6 Rd2 47.Rc7 Kd8 48.Rg7 Re2 49.Kf3 (49.Kf3 Ra2 50.b7+-) 1–0. Zylla,Johannes – Baehre, BS–Stadtm., 1991.

4.Nf3 Bg4 5.e3 c5 6.Be2 h6 7.b5 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Nd7 11.d3 Ngf6 12.Nbd2 Be7 13.0-0 0-0 14.h3 Bh5 15.Bc3 Qb8 (15...Re8 16.Qb3+=) 16.Qa4 (16.Ne5!? Be2 17.Nd7 Bd1 18.Nb8+-) 16...Qb7 17.Ra1 g5 18.g4 Bg6 19.e4 Kg7 20.Qa7 Qa7 21.Ra7 Rh8 22.Nh2 h5? (22...Bd8+=) 23.f3?? (better is 23.h4 gh4 24.g5+-) 23...hg4= 24.hg4 Rh3 25.Kg2 Rh4 26.Nhf1 Bf8? 27.Ne3 Kg8 28.Nd5+- Bg7 29.Nf6 Nf6 30.Rb7 Kh7 31.Rb6 d5 32.cd5 Nd7 33.Rb7 Nf6 34.Nc4 Bh6 35.Ne5 Be4 36.de4 Kg7 37.Nf7 1–0. Fournier,Frederic – gmateo2, Active, 2009.

4.g3 a5 5.Bg2 Ra7 6.b5 Nf6 (6...Be6 7.Na3=) 7.Nf3+= Bb7 8.0-0 c5 (8...Qd7 9.Nc3+=) 9.bc6 Nc6 10.d4 (10.Nc3 Ra8+=) 10...Ba6 (10...e4!? 11.Nfd2 d5+=) 11.Ne5+- de5 (11...Ne5!? 12.de5 de5 13.Qa4 Nd7 14.Be5 Bc4+-) 12.Bc6+- Nd7 13.Qa4 Bc8 (13...Rc7!?+-) 14.Nc3 Be7 (14...Bb7 15.Nd5 Bc6 16.Qc6+-) 15.de5 0-0 (15...Bb7 16.Bb5+-) 16.Rad1 (16.Nb5 Ra6 17.Rfd1 Bc5+-) 16...Qc7 (16...Bc5 17.Nb5 Ra6 18.Nd6+-) 17.Nd5 Qd8 18.e3 (18.Bd4 Kh8+-) 18...Nc5 19.Qb5 (better 19.Qc2 Bd7 20.Bd7 (20.Ne7?! Qe7 21.Rd6 Bc6 22.Rc6 Rb8+-) 20...Nd7 21.Qf5+-) 19...Ra6?? (better 19...Ba6 20.Ne7 Qe7 21.Qb6 Bc4+-) 20.Nf6! gf6 (20...Bf6 21.Rd8 Discovered attack; 20...gf6 21.Rd8 Discovered attack) 21.Rd8 Rd8 (21...Bd8 22.ef6 a4 23.Bc3+-) 22.ef6 Bd6 (22...Bf8 23.Bd4+-) 23.Rd1 Bc7 24.Rd8 (24.Rd5 Rd5 25.cd5 Ra7+-) 24...Bd8 25.Bd4 Ra7 (25...a4+-) 26.Bc5 bc5 (26...Bf6 27.Bb6 Re7 28.Bd8+-) 27.Qc5 Rc7 28.Qg5 Kf8 29.Qg7 1–0. michaelbuss (2775) – mikereeves, ChessWorld.net, 2011.

4.g3 Nf6 5.Bg2 c6 6.Nc3 (6.b5 Bb7=) 6...d5 (6...Be7 7.Qa4 Bd7 8.Nf3=) 7.cd5 Bb4? (better is 7...cd5 8.Nf3 Nbd7=) 8.dc6+- Qc7? (better is 8...Bc3 9.Bc3 Qc7+-) 9.Nb5 Qe7 10.c7 Na6 (10...e4 11.cb8B Rb8 12.Bf6 Qf6 13.Be4 0-0+-) 11.Ba8 0-0 12.a3 Bc5 13.Na7 Qc7 14.Nc8 Rc8 15.Bg2 Rd8 16.Rc1 Ng4 17.e3 Qe7 18.Qg4 g6 19.Nf3 Nc7 20.Ne5 f5 21.Ng6! hg6 22.Qg6 Kf8 23.Bf6 Qf7 24.Qf7 Kf7 25.Bd8 Ne6 26.Bd5 1–0. gioco1b4,Microsoft (2120) – Bukuiam, 1800 Microsoft, 2012.

5.e3 Ne7 6.Nf3 f5 (6...e4 7.Ng5=) 7.Be2 Ng6 8.b5 a5 9.0-0 Be7 10.Nc3 0-0 11.d4 Bf6 12.de5 Ne5 13.Nd4 Ned7? (better 13...Qe8+/-) 14.Ne6+- Qe7 15.Nc7 Ra7 16.N7d5 Bd5 (16...Qf7 17.Nf6 Qf6 18.Qd4+-) 17.Nd5 (17.cd5?! f4 18.Qd2 Nc5+/-) 17...Qf7 (17...Qd8 18.Nf6 Nf6 19.Bd3+-) 18.Bf6 Nf6 19.Bf3 (better 19.Nb6 Ne4 20.Nd5+-) 19...Nd5?? (19...Nbd7+-) 20.Bd5 (20.cd5?! Nd7+/-; 20.Qd5?! Qd5 21.Bd5 Kh8+-) 20…Qd5 1-0. BeepBeepImAJeep - Kosmos99 (1895), lichess.org, 2017.

5.e3= Nf6 6.Nf3 Nbd7 7.Be2 g6 8.0-0= Bg7 9.Ne1 0-0= 10.d3 Qe7 11.Nd2 a5 12.b5 Nc5 13.e4 Ne6 14.Nef3 Rae8 15.Re1 h6 16.Qc2 Nh7 17.g3 Bc8 18.Bf1= Neg5 19.Kh1 Nh3 20.Nb1 N7g5 21.Nh4 Qe6 22.Nc3 f5 23.Nd1?? fe4–/+ 24.de4 Kh8 25.Ra3 Bb7 26.Bg2 Rf7 27.Rae3 Ref8 28.Rf1 Kh7 29.f3 h5 30.Qe2 Bh6 31.Nc3 Kg8 32.Nd5 Nh7 33.Rd3 N3g5?? 34.Bc1?? Bd5?? 35.cd5+- Qf6 36.Be3 Bg7 37.f4 ef4 38.Bf4 Re8 39.Be3 Qd8 40.Ng6+/- Rf1 41.Qf1 Ne4 42.Nf4 Nef6 43.Ne6+- Qd7 44.Qf5 Qf7 45.h3 Re7+/- 46.Bd2 Nf8 47.Ng7 Qg7 48.Bc3 N8d7 49.Rf3 Rf7 50.Bf1 Qh6 51.Rf4 Qh7 52.Bd3 Qf5= 53.Rf5 Kf8 54.Be2 Ne4+= 55.Rf7 Kf7 56.Bh5 Ke7 57.Be1 Ne5 58.Kg2 Nd3 59.Kf1 Ne1 60.Ke1 Ng3 61.Bg6 Kf6 62.Kf2 (62.Kf2 Nh1 63.Kg2 Kg6 64.Kh1–/+). Norbeck,Ivar – Pettersson,Thore, corr SSKK 2–97, 1988.

5.b5 Be7 6.e4 Nf6 7.d3 Nbd7 8.Nf3 h6 (8...a6 9.ba6 Ra6 10.Be2=+) 9.Be2 Nc5 10.0-0 Bc8 (10...0-0 11.Qc2=) 11.Qc2 (11.d4 ed4 12.Nd4 0-0+-) 11...0-0+= 12.d4 ed4 13.Nd4 Bb7 e4 seems the pivot of the position 14.Bf3 Nfd7 15.Rad1 Ne5 16.Qe2 (16.Be2 a6+=) 16...Nf3 (16...a6 17.Bg4=) 17.Qf3+= (worse 17.gf3 a6=+) 17...Bf6 18.Nd5 Bd4 (18...Bd5 19.ed5 Qd7 20.Ba1+=) 19.Bd4 Ne6 20.Bb2 a5 (20...a6 21.a3+=) 21.a4 (21.Qg4 Qg5 22.Qg5 hg5+-) 21...Qg5+= 22.g3 (22.Qc3 Bd5 23.cd5 Nc5+=) 22...Bd5 23.Rd5 (23.cd5 Nc5=) 23...Qg6 24.h4 (24.e5 de5 25.Re5 Rad8=) 24...Nc5=+ 25.Re1 White intends e5 (25.e5 Na4 26.Ba3 Qe6=) 25...Na4 26.h5 Qe6 27.Bd4 Rae8 (27...Nc5 28.Re3–/+) 28.Kg2 Nc5 29.e5 (better 29.Re3!?=+) 29...f6-+ 30.Bc5 fe5 31.Qe2 (31.Ree5 Qe5 (31...de5?! 32.Bf8 Rf8 33.Qe4=+; 31...Rf3?! 32.Re6 Re6 33.Kf3 dc5 34.Rd7=+) 32.Re5 Re5-+) 31...bc5-+ (31...dc5?! 32.Re5 Qe5 33.Qe5 Re5 34.Re5–/+) 32.Ra1 Rf5 (32...Ra8 33.f4-+) 33.f4 (33.Ra5 Ref8 34.Ra7 R5f7–/+) 33...Qf7 34.Ra5 (34.Qg4 Rh5 (34...Qh5?! 35.Qh5 Rh5 36.g4–/+) 35.Ra5 Rf8-+) 34...Rh5 (34...ef4!? 35.Qf3-+) 35.Qg4 (35.Ra7 Qf5 36.Kg1 Qh3-+) 35...Rf5 36.Ra7 Re6 (better 36...Rf6 37.b6 Rg6-+ (37...ef4?! 38.Rc7 Qf8 39.Rd3-+)) 37.Rc7=+ Qf8 (better 37...Qc7!? 38.Qf5 Rf6–/+) 38.b6 Re8 (38...g5 39.Rc8!? Qc8 40.Qf5 ef4 41.b7 (worse 41.gf4 Re2 42.Kg3 Qf5 43.Rf5 gf4 44.Rf4 Rb2–/+) 41...Re2 42.Kf1 Qf5 43.b8Q (43.Rf5? Rb2-+) 43...Qf8 44.Qf8 (44.Ke2?? Qb8 45.gf4 gf4-+) 44...Kf8 45.Ke2 fg3 46.Rd6+-) 39.b7 (39.Qg6 Rf7+-) 39...Rf7 40.Rf7 Kf7? (40...Qf7 41.Qc8 Qf8+-) 41.Qf5 Ke7 42.Qf8 (42.Qg6 Kd7 43.fe5 Kc7 44.Rd6 Re5 45.Rc6 Kd7 46.Qg4 Kc6 47.Qc8 Qc8 48.bc8Q Kd6 49.Qf8 Re7 50.Qd8 Ke6 51.Qd5 Kf6 52.Qc5 Rd7+-) 42...Kf8? (better 42...Rf8!? 43.fe5 de5 44.Rc5 Kd7+-) 43.fe5 (43.Rd6 Ke7 44.fe5 Rb8+-) 43...Rb8 44.ed6 Rb7?? (44...Ke8 45.Rc5 Kd7 46.Rc7 Kd6 47.Rg7 Kc5+-) 45.d7 (45.Rc5?! Ke8 46.Re5 Kd8+-) 45...Rb8 46.d8Q (46.d8Q Rd8 47.Rd8 Ke7 48.Rd5+-) 1–0. Dziedzic,Ferdynand (1915) – Borkowski,Jozef, Szachowe Mistrzostwa Polski Osob Niepelnosprawnych Poland, 2009.

5.Qc2 Nc6 6.a3 Nd4 7.e3?? Nc2-+ (7...Nc2 8.Kd1 Na1 9.Ba1 Nf6-+) 0–1. Davies,David – Edwards,Bevan, IECG, 1997.

5.d3 Nc6 6.a3 Nf6 7.e3 Be7 8.Nf3 0-0 9.Be2 Re8 10.Nd5 Nd5 11.cd5 Nb8 12.Qb3 Nd7 13.0-0 c5 14.Nd2 Nf6 15.Bf3 Nd7 16.d4 cd4 17.ed4 Bf6 18.Ne4 Qe7 19.Rfe1 Qf8 20.Rac1 Rac8 21.Nf6 Nf6 22.Rc8 Rc8 23.de5 de5 24.Be5 Qd8 25.Bf6 Qf6 26.h3 g6 27.Qd3 Rc3 28.Qe4 Rc7 29.Qe8 Kg7 30.Rd1 Re7 31.Qd8 Time forfeit 1-0. demihai (2120) - VSI_22 (1980), Rated Classical game, lichess.org, 2016.

5.e3 Nc6 6.b5+= Nb4? 7.a3+- Qg5? 8.ab4 Nf6 9.Qc2 g6 10.Nf3 Bf3 11.gf3 0-0-0 12.Bh3 Kb8 13.Qa4 a5 14.ba6 Ka7 15.Qc6 Rb8 16.Nb5# 1–0. Woelfelschneider,Peter – Kleiner, 2009.

5.e3 Nf6 6.Nf3 =.

5.e4 Nf6 6.d3 Nc6 7.b5 Nd4 8.Nge2 Ne2 9.Be2+= g6 10.0-0 h5 11.f4 ef4 12.Rf4 Bh6 13.Rf1 Qe7 14.Nd5 Bd5?? 15.cd5 Bg7 16.Qc2 Rh7?? 17.Qc6+- Qd7 18.Qa8 Ke7 19.Qc6 Qc8 20.e5 de5 21.d6! Kf8 22.Be5 (22.Be5 Ng8 23.d7 Qd7 24.Qd7 Be5 25.d4+-) 1–0. Fredek (2065) – Guest208263, Freundschaftspartie, 5m + 0s, 2006.

5.e4 Nf6 6.d3 Be7 7.Nf3 0-0 8.Be2 c5 9.bc5 bc5 10.0-0 Nc6 11.Ng5 h6 12.Nf3= Nd4 13.Qd2 Nh5 14.Nd4+= cd4 15.Bh5 Bg5 16.f4= Bf4? 17.Rf4+- ef4 18.Nb5 Qg5 19.Nd6 Qh5 20.Nb7 (20.Nb7 f5 21.Bd4+- (< 21.Qf4 Rab8+-)) 1–0. Wall,Bill – Elegance, internet, 2003.

5.e4 Nf6 6.d3 Be7 7.f4 =.

5.e4 Nf6 6.d3 g6 7.Be2 Bg7 8.Nf3 0-0 9.0-0 Nbd7 10.Qd2 a6 11.Nd5 a5 12.a3 Re8 13.Nf6 Nf6 14.b5 Qe7 15.Bc3 Nd7 16.Rab1 Nc5 17.g3 Rf8 18.Nh4 Bc8 19.Bf3 Bh3 20.Bg2 Qd7 21.Rfd1 Rae8 22.Rf1 Bg2 23.Kg2 Bf6 24.Nf3 Ne6 25.h3 Bd8 26.Qe2 Ng5 27.Ng5 Bg5 28.Qg4 Qg4 29.hg4 f5 30.gf5 gf5 31.f4 Bf6 32.ef5+/- ef4 33.Bf6 Rf6 34.g4 Re3+= 35.Rf3 h5 36.Re3 fe3 37.Kf3 hg4 38.Kg4 ½–½. Johansson,Ragnar – Pettersson,Thore, corr SSKK Sweden, 1988.

5.Nf3 a5 =.

5.Nf3 Nf6 6.e3 Nbd7 7.Be2 Be7 8.Qc2 0-0 9.0-0 h6 10.d4 ed4 11.Nd4 c5 12.bc5 dc5 13.Nf5 Re8 14.Rfd1 Bf8 15.Rd2 Ne4 (15...Qc8!?+/-) 16.Ne4+- Be4 17.Bd3 Bc6?? (better is 17...Bd3 18.Qd3 Nf6+-) 18.Nh6 (18.Nh6 Kh8 19.Nf7 Kg8 20.Nd8 Rad8 21.Bf5+-) 1–0. pcmvr – jcosta (2465), net–chess.com, 2014.

5.d4 Qf6 6.d5 g6 7.dc6+/- Nc6 8.b5 Nd4? 9.Nd5+- Qd8 10.Bd4 ed4 11.Qd4 f6 12.Nf3 Bg7 13.Qe4 Kf8 14.Nf4 Rb8 15.Nd4 Qe8 16.Qd5 Ne7 17.Qd6 Bf5? 18.Nf5 gf5 19.Rd1 Bh6 20.Qf6 Kg8 21.Qh6 Ng6 22.e3 Kf7 23.Rd5 Kf6 24.Bd3 Qf8 25.Rf5 (25.Rf5 Ke7 26.Rf8 Rbf8 27.Bg6 Rf4 28.ef4 hg6 29.Qh8 Kf7 30.Qh7 Kf8 31.Qa7 Ke8 32.Kd2 Kf8 33.Re1 g5 34.fg5 Kg8 35.Re8#) 1–0. marcosramos (2410) – nwishn (2080), net–chess.com, 2007.

5.Nf3 Nd7 6.e3 Ngf6 7.Be2 g6 8.0-0 Bg7 9.d4 e4 10.Ng5 h6? 11.Nge4+- Ne4 12.Ne4 Nf6 13.Nf6 Bf6 14.Qc2 Bf5 15.e4 Bd7 16.e5 de5 17.de5 Bg7? 18.Rad1 Be5?? 19.Be5 Rg8 20.Qe4 Rc8 21.Bd6 Be6 22.Bg4 Qd7 23.Rfe1 Kd8 24.Be5 Qd1 25.Rd1 Ke8 26.Be6 fe6 27.Bd6 Kd7 28.Bf4 Ke7 29.Bh6 Rc7 30.Qe5 Rd7 31.Bg5 Ke8 32.Qe6 Kf8 33.Rd7 Rg7 34.Rd8# 1–0. reddragonx (1750) – arok, internet, 2007.

5.e3 c6 6.d4 Nd7 7.d5 cd5 8.cd5 Bf5 9.e4 Bg6 10.Rc1 a6 11.Nf3 Be7 12.Be2 Ngf6 13.Nd2 b5 14.0-0 0-0 15.h3 Nb6 16.a3 Nfd7 17.a4 Bg5 18.ab5+= a5 19.ba5 Ra5 20.Rb1 f5 21.Nb3 Ra8 22.Bd3 Nf6 23.ef5 Bh5 24.g4 Be8 25.Bc1 Bc1= 26.Rc1 Nfd7 27.f4+/- ef4 28.Rf4 Ne5 29.Qd2 Rc8 30.Be4 Nbc4 31.Qf2 Nb6? 32.f6! Bb5?? 33.Nb5 Rc1 34.Nc1 1–0. Dlugolecki,Grzegorz – Gajate,Guillermo, UECC, 1999.

5.e3 Nf6 6.Nf3 e4 (6...Be7!?=) 7.Ng5+/- Bf5 8.Qc2 The pressure on e4 grows 8...d5 (8...Nc6 9.Nge4 Ne4 10.Ne4 Nb4 11.Nd6 Bd6 12.Qf5+/-) 9.cd5 Nd5 (better is 9...a5 10.ba5 Ra5 11.Nge4 Ne4 12.Ne4 Rd5+-) 10.Bb5+- c6 11.Nd5 (11.Nge4? cb5 12.Nd6 Bd6 13.Qf5 Nc3 14.Bc3 0-0-+) 11...Qd5 (11...Qd6 12.Qc4 Be6 13.Ne6 fe6 14.Nf4 cb5 15.Qc8 Kf7 16.Qb7 Nd7 17.Qa8 Qd2 18.Kd2 Bb4 19.Ke2 Ra8 20.Rhd1+-) 12.Bc4 Qd7 13.Nf7 (13.Bf7?! Kd8 14.Bb3 Bg6 15.Ne6 Kc8+-; 13.Ne4?! f6 14.Bc3 Be7+/-) 13...b5 14.Bb3 (worse is 14.Nh8 bc4 15.Qc4 Qd5 16.Qd5 cd5+-) 14...Bb4 15.Nh8 1–0. pcmvr – preethan (2295), net–chess.com, 2016.

5.Nc3 Nd7 6.Nf3 g6 7.e3 Bg7 8.Be2 Ngf6 9.0-0 0-0 10.a4 Re8 11.a5 a6 12.ab6 cb6 13.e4 Nb8 14.Re1 Nc6 15.b5 Na5 16.Ba3 ab5 17.Nb5 Bf8 18.Qc2 Bc6 19.Reb1 Bb5 20.Rb5 Qc7 21.Qb1 Reb8 22.Bb2 Nc6 23.Ra8 Ra8 24.d4 ed4 25.Nd4 Ne5 26.f3 Ra5 27.Ra5 ba5 28.Nb5 Qc6 29.Qa1 Bg7 30.Qa5 Nc4?? 31.Bc4+- Qc4 32.Qd8 Bf8 33.Qf6 (33...Qc5 34.Kh1+-; 33.Bf6?! Qb5 34.Kf2 Qh5+/-; 33.Nd6? Qb4 34.g3 Qb2-+) 1–0. Bonetti,Shane – Coy, ICC, 2002.

5.Nf3 a5 6.b5 Nd7 7.g3 g6 8.Bg2 Bg7 9.0-0 Qc8 10.e3 f5 11.d4 e4 12.Ng5 Nf8 13.Qb3 h6 14.Nh3 g5 15.c5 dc5 16.dc5 Bb2 17.Qb2 Ng6 18.c6 Bc6 19.bc6 Qe6 20.Na3 Nf6 21.Nb5 Rc8 22.Rfd1 0-0 23.Rac1 Ne5 24.Bf1 Nc6 25.Bc4 1-0. ivanrojo (2250) - antonio_1813 (2070), Rated Blitz game, lichess.org, 2016.

5.Nf3 f5 6.Nc3 Nf6 7.e3 (7.d4 Qd7+=) 7...Nbd7 8.Be2 Be7 9.Qb3 c5 10.Ng5 cb4 11.Qb4 Qc8 (11...Bg2? 12.Rg1 Bc6 13.Ne6+-) 12.Ne6 (12.0-0 Ng4 13.Nf3 d5+=) 12...Kf7 (12...Nc5 13.Nc5 (13.Ng7? Kf8-+) 13...bc5 14.Qa3=) 13.Ng5= Ke8 (13...Kg6 14.h4=) 14.Ne6 (14.0-0!?+/-) 14...Kf7 (14...Nc5 15.Nc5 (15.Ng7? Kf8-+) 15...Qc5 16.Qb3=) 15.Ng5= Ke8 ½–½. Heard,Andrew H (1945) – Clements,Thomas A (1885), The Four Nations Chess League, 2011.

5.b5 Na5 6.e3 a6 7.Be2 ab5 8.Bf3 Bb7 9.Bb7 Nb7 10.cb5 Nc5 11.Nc3 Nf6 12.Nf3 Be7 13.0-0 0-0 14.a4 h6 15.Rc1 Qd7 16.d4 ed4 17.Nd4 Nfe4 18.Ne4 Ne4 19.Nc6 Nc5 20.a5! ba5? 21.Rc5!+- Qe6 22.Rc1 a4 23.Nd4 Qg6 24.Rc7 Bf6 25.b6 a3 26.b7 Rfb8 27.ba8Q Ra8 28.Ba1 Bd4 29.Qd4 Rd8 30.Ra7 f5 31.Rg7 (31...Kf8 32.Rg6 Ke8 33.Qg7 Rb8 34.Rf6 Rb2 35.Rf8) 1–0. Bonetti,Shane – LOGOF, ICC, 2002.

5.b5 Nce7 6.e3 a6 7.Nc3 ab5 8.cb5 Bb7 9.Nf3 Nf6 10.Be2 Ra5 11.0-0 Qd7 12.d4 ed4 13.Nd4 Nf5 14.Nf5 Qf5 15.Bd3 Qg5 16.g3 Qh6 17.e4 Qh3 18.f3 d5 19.ed5 Bc5 20.Kh1 Bd6 21.Qe1 Kf8 22.Bc4 Nh5 (23.Ne4 Ra4 24.Nd6 cd6+-). Bonetti,Shane – Excalibur50, ICC, 2002.

5.b5 Nd4 6.Bd4 ed4 7.Qd4 Qf6 8.Nf3 Qd4 9.Nd4 Bb7 10.Nc3 g6 11.e3 Nf6 12.Nc6 a6 13.Be2 ab5 14.cb5 Ra3 15.Rc1 d5 16.0-0 h5 17.Bf3+/- Bc5 18.Nd5 Nd5 19.Bd5 Bc6 20.Bc6 Ke7 21.Bd5 Rd8 22.Rfd1 f5 23.h4 Rd6 24.g3 Ra4 25.Rb1 Kf6 26.Kg2 Ke5 27.Bf7 Kf6 28.Bg8 g5 29.hg5 Kg5 30.Rdc1 h4 31.Bb3 Rb4 32.gh4 Kh4 33.Rh1 Kg5 34.Rh7 Rg4 35.Kf3 Rh4 36.Rg1 Rg4 37.Rgh1 Kf6 38.Rf7 Ke5 39.Rh8 Rgg6 40.Ke2 Be3 41.Ke3 (41.Ke3 f4 42.Rf4 Rd3 43.Kd3 Kf4 44.Rc8 Rd6 45.Kc4+-) 1–0. PeterRs – dhub noire, ChessWorld.net, 2007.

5.de5 de5 6.Qd8 Nd8 7.Be5 Bb4 8.Nc3?? f6-+ 9.Bd4 c5 10.Rb1 cd4 11.Rb4 dc3 12.e4 Ne7 13.c5 0-0 14.cb6 ab6 15.Bc4 Kh8 16.Nf3 Be6 17.Be6 Ne6 18.0-0 Ra2 19.Rb6 Nc5 20.Rc1 Ne4 21.Nd4 Nf2 22.Ne6 Rc8 23.Rb7 Nf5 24.Rb5 g6 25.Nf4 Kg7 26.Rb7 Kh6 27.Rf7 Ne4 28.Nd5 Nfd6 29.Re7 f5 30.h3 c2 31.Ne3 Ng3 32.Kf2 Nde4 33.Kf3 Ra3 34.Kf4 Ne2 35.Ke5 Nc1 36.Re6 Re3 (37.Re8 Re8 38.Kd5 Rd8 39.Kc6 Rc3 40.Kb7 Nd6 41.Ka6 Rc6 42.Ka7 Rd7 43.Kb8 Rc8; 36...Nd3 37.Kd4 Ra4 38.Nc4 Rd8 39.Rd6 Rd6 40.Ke3 c1Q 41.Kf3 Qf1 42.Ke3 Qf2) 0–1. badboy1221 – JimA22, Live Game Caissa's Web, 2004.

5.Nd2 d5 6.Ngf3 dc4 7.Nd4 Qd6 +=.

5.Qd4 Bb7 6.Nd2 Nc6 7.Qe4 Qe7 8.Qe7 Nge7 (8...Be7 Less advisable is 9.Bg7 Bf6 10.Bh8 Bh8 11.Rb1+/-; 8...Nce7?! 9.e3=; 8...Ke7 Weaker is 9.a3+=) 9.a3 Controls b4 9...Ng6 10.Ngf3 Nce5 11.e3 Prevents intrusion on f4 11...Be7 12.Be2 Bf6 13.Rb1 Nh4 14.Nh4 Bh4 15.0-0 Bf6 16.f4 Nd7 17.Bf3 0-0-0 18.g4 Rde8 19.Kf2 h6 20.Bb7 Kb7 21.Kf3 Re7 22.Rfe1 Rhe8 23.e4 c6 (23...Bb2 24.Rb2 g6 25.Rb3=) 24.a4 (24.e5 de5 25.Ne4 Rh8+=) 24...a6 (24...Bb2 25.Rb2 g5 26.a5=) 25.Ba3 (25.e5 de5 26.Ne4 Rh8+=) 25...Kc7 (25...Bc3 26.Re2+=) 26.Bb2 Bb2 27.Rb2 Nf6 28.h4 g6 29.g5 hg5 30.hg5 Nd7 31.b5 cb5 32.cb5= a5 33.Rc2 Nc5 34.Rc3 Kd7 35.Rc4 Rh8 36.e5 White gets more space 36...d5 37.Rd4 Ke6 38.Kg4 Ree8 39.Re3 Rd8 40.Nb1 Rd7 41.Nc3 Attacks the isolani on d5 41...Rhd8 42.Re1 Nb3 43.Rd3 d4 44.Ne4 Nc5 45.Nc5 bc5+= A double rook endgame occured 46.Rc1 Kd5 47.Rd2 c4+= 48.Kf3 Rc7 49.Re2 c3–/+ 50.Rec2? Rdc8 51.Rd1? Rc4-+ 52.Ra2? Rb4 53.Rh2 Rb2 54.Rh7? c2 55.Rc1 0–1. Frantz,John W – Kane,Paul (1640), Romulus op, 2000.

5.Qd4 Bb7 6.Nf3 Be7 7.Qg7+/- Bf6 8.Bf6 Qf6 9.Qf6 Nf6 10.e3 Nc6 11.a3 h6 12.Nc3 0-0-0 13.Be2 Ne5 14.0-0-0 Rhg8 15.Rhg1 Neg4 16.Rdf1 Bf3 17.gf3 Nh2 18.Rg8 Rg8 19.Rh1 Rg2 20.Nd1 h5 21.e4 Kd7 22.Kd2 Nh7 23.Ke3 h4= 24.Nc3 h3?? 25.Nd5+/- Nf8 26.Nf4 Rg8?? 27.Rh2 Rg1 28.Rh3 Ra1 29.Rh8 Ra3 30.Bd3 Ke7 31.Nd5 Ke8 32.Nc7 Ke7 33.Nb5 Ra1 34.Nd6 Kd6 35.Rf8 Ke7 36.Ra8 a5 37.ba5 ba5 38.Bc2 Kd6 39.Kd4 Ra2 40.c5 Kc7 41.Bb3 Rf2 42.Ra5 Rf3 43.Bc4 f5 44.ef5 Rf5 45.Bd5 Rf8 46.Ra7 Kd8 47.Ra8 Ke7 48.Rf8 Kf8 49.Ke5 Ke7 50.c6 Kd8 51.Kd6 (51…Kc8 52.Be6 Kb8 53.c7 Kb7 54.c8Q Kb6 55.Qc5 Kb7 56.Qc7 Ka6 57.Bc4#) 1–0. Berrio,Ana – Santiago,Angel, Navidad op Barranquilla, 1999.

5.Qd4 Bb7 6.Nf3 Qf6 7.Qd2 Qd8 8.Nc3 Nf6 9.Rd1 Nbd7 10.e3 Be7 11.Be2 0-0 12.a3 Ne5 13.h3 Rb8 14.b5 Bf3 15.gf3 Qd7 16.f4 Ng6 17.h4 Nh4 18.Rh4+- Ne4 19.Ne4 Bh4 20.Qd4 f6 21.Kd2 f5 22.Rg1 Rf7 23.Bh5 Re7 24.Qd5 Kh8 25.Ng5 Rf8 26.Bg6 Bg5 27.fg5 Qe6 28.Qe6 Re6 29.Bh5 Kg8 30.Bf3 Rg6 31.Bd5 Kh8 32.f4 1–0. Moraes,Maurino – Dalsasso,Sergio, Indaial JASC op, 2004.

5.Qd4 Bb7 6.Nf3 Nf6!? =.

5.Qd4 Nc6 6.Qe4 Nge7 7.b5 =.

5.Qd4 Nf6 6.e4 Bb7. marcosr – andreih (1740), net–chess.com, 2005.

5.Qd4 Nf6 6.Nf3 c5 7.bc5 bc5 8.Qd1 Be7 9.e3 0-0 10.Bd3 d5 11.0-0 Bg4 12.cd5+= Qd5 (12...Qd5 13.Bf6 Bf3 14.gf3 Qd6 15.Be7 Qe7+-). marcosr – andreih (1740), net–chess.com, 2005.

5.Qa4 Bd7 6.b5 a5 7.Nf3 Na6 8.a3 Nc5 9.Qc2 Qf6 10.Nc3 Be6 (10...Bf5!? 11.e4 Bg6+=) 11.Nd5 Bd5 12.cd5 Ne7 13.d4 ed4 14.Bd4 Qf5 15.Qc3 (better is 15.Qf5!? Nf5 16.Rc1+/-) 15...Nd5= 16.Qb2 f6 17.Bc4 0-0-0 (better is 17...Ne7!?=) 18.0-0 Nd3?? (18...Kb8 19.Rfd1 Ne7 20.Bc5 Qc5 21.Bf7+/-) 19.Bd3 (19.Qc2 Kb8+-) 19...Qd7?? (better is 19...Qd3 20.Rfd1 Qg6+/-) 20.Rac1 Kb7 21.Be4 Qe6 22.Qb3 Kb8?? 23.Bd5 Qe7 24.Rc6 g5 25.Bb2 h6 26.Nd4 Rh7 27.Rfc1 Rc8 28.Be6 Qd8 29.Bc8 Qc8 30.Ne6 d5 31.Nc7 Rc7 32.Rc7 Qc7 33.Rc7 Kc7 34.Qd5 1–0. madik – gerl, gameknot.com, 2009.

5.d4 e4 6.d5 c6 7.Ne2 a5 8.ba5+/- b5 9.cb5+- Qa5 10.Nbc3 cd5 11.Nd4 Nf6 12.Nb3 Qc7 13.a4 Bb7? 14.a5 Nbd7 15.a6 Bc8 16.Nd5 Nd5 17.Qd5 Nb6 18.Qe4 Be7 19.Bg7 d5 20.Qe5 Qe5 21.Be5 0-0 22.Bd4 Bb4 23.Ke2 Nc4 24.Kf3 Bd7 25.b6 Bc6 26.a7 Nd2 27.Nd2 Bd2 28.Ba6 Bb4 29.Rhc1 (29...Ra7 30.ba7+-) 1–0. Trkn – guest31, ICC, 2004.

5.a4 a5 6.b5 e4 7.Ne2 f5 8.Nf4+= Nf6 9.Ne6 Qe7= 10.Nf8 Qf8 11.Be2 Nbd7 12.0-0 Qe7 13.d4 0-0 14.Nd2 Kh8 15.Nb3 Rad8 16.Qc2 g6 17.Rfd1 Kg7 18.Rac1 Rc8 19.c5 Bd5 20.c6 Nb8 21.Bc4 Bc6?? 22.bc6+- Nc6 23.Ba3 Qd8? 24.Ba6 Na7 25.Bc8 Nc8 26.Qc7 Qc7 27.Rc7 Kh6 28.Rdc1 1–0. Kalanyos,Ferenc – David,Lajos, HUN–chT3, 1999.

5.a4 Nc6 6.b5 Na5 7.Nf3 Nf6 8.Be2 Bf3 9.Bf3+= Nc4 10.Ba8 Nb2?? 11.Qb3 Qa8+/- 12.0-0 Na4 13.Qa4 a5? 14.ba6+- Nd7 15.Nc3 Be7 16.Nb5 Bd8? 17.Rfc1 Nc5 18.Nc7 (18.Nc7 Ke7 19.Rc5 Bc7 20.Rc7 Kf6 21.Qh4 Kg6 22.f4 ef4 23.Qg4 Kf6 24.Qf4 Kg6 25.Qf7 Kg5 26.h4 Kh4 27.Qf4 Kh5 28.Rg7 Qg2 29.Kg2 Ra8 30.Qg5#) 1–0. valpa – Grunert, playchess.de, 2002.

5.Qb3 Nf6 6.Nf3 Nbd7 7.d4 a5 8.de5 (8.ba5!? Bf3 9.gf3 Ra5 10.c5=) 8...de5=+ 9.Ne5 (9.ba5 Nc5 10.Qb5 Nfd7=) 9...Ne5 (9...Bb4!? 10.Ke2 0-0-/+) 10.Be5=+ Bb4 11.Nc3 Bd6 (11...Ne4 12.Qc2 Qg5-+) 12.Rd1+= 0-0 (12...Be5 13.Rd8 Rd8 14.c5+=) 13.Bd6+/- cd6 14.f3 (14.c5 Nd7 15.cd6 Nc5+/-) 14...Qe7 (14...Re8 15.e4=) 15.e4 (15.Qb6 Rfe8+=) 15...Rfe8 16.Be2 Rac8 (16...Nd7 17.0-0+=) 17.0-0 (17.Qb6!? Be4 18.Qd6 (18.fe4?! Ne4 19.Ne4 Qe4=) 18...Qd6 19.Rd6+/-) 17...Qc7= 18.Nb5 Attacking the isolated pawn on d6 18...Qc5 19.Kh1 Bc6?? (better 19...d5 20.cd5 Nd5=) 20.Nd6+- Red8 21.Nc8 Rc8 22.Rd2 a4 23.Qc2 b5 (23...Re8+-) 24.cb5 Qb5 (24...Be8 25.Qc5 Rc5+-) 25.Bb5 Bb5 26.Qc8 (26.Qc8 Ne8 27.Rb1 Kh8 28.Rb5 h6 29.Qe8 Kh7 30.Qf7 Kh8 31.Rd7 Kh7 32.Qg7) 1-0. ClayPigeons (2105) - SirMandanga (2100), Rated Bullet game, lichess.org, 2020.

5.b5 Nf6 6.a4 Nbd7 7.Nf3 Be7 8.Be2 0-0 9.0-0 Nc5 10.Ba3 a5 11.Bc5 bc5 12.Nc3 e4 13.Ne1 Re8 14.d3 Bf8 15.de4 Ne4 16.Ne4 Be4 17.Bf3 Qe7 18.Be4 Qe4 19.Qe2 Re6 20.Nf3 h6 21.Rfd1 Rg6 22.Rd5 Re8 23.Rad1 Ree6 24.g3 Ref6 25.Nh4 Qh4 26.Kh1 Qe4 27.Kg1 Re6 28.Rf1 Rg5 29.f4 Rd5 30.cd5 Qd5 0-1. argirios - Mars3000 (2165), Rated Blitz game, lichess.org, 2017.

5.Nc3 Nd7 6.Qc2 Ngf6 7.Be2 Bg2 8.Bf3 Bh1 9.Bh1 Rb8 10.Qa4 Be7 11.Qa7 Qc8 12.Nb5 Kd8 13.Qa3 c6 14.Na7 Qb7 15.Nc6 Ke8 16.Bf3 Ra8 17.Ne7 e4 18.Qc3 Ke7 19.Bg2 Rhc8 20.d3 b5 21.Qd4 bc4 22.dc4 Qb4 23.Bc3 Qc4 0-1. MASZTALERZ (2150) - hamidvpt (1975), Rated Classical game, lichess.org, 2016.

5.Nc3 Ne7 6.Nf3 Ng6 7.h4 (7.d4 ed4 8.Nd4 Nd7+=) 7...a5 8.b5 Be7 9.h5 Nh4 10.Nh4. Hilbert,Stephan J – Foster,Duncan (1665), FICGS, 2017.

5.d4 ed4 6.ed4 d5 7.c5 Qe7 8.Qe2 Nf6 =.

5.d4 ed4 6.ed4 Nf6 7.d5 c5 8.b5 Be7 9.Bd3 0-0 10.Nf3 Bc8 11.0-0 a6 12.Nc3 Bg4 13.Bc2 Nbd7 14.h3 Bf3 15.Qf3 Ne5 16.Qe2 Re8 17.f4 Ng6 18.ba6 Bf8 19.Qd2 Ra6 20.Bg6 fg6 21.f5 gf5 22.Rf5 g6 23.Rf6+/- Qf6 24.Ne4 Qh4 25.Nf6 Kf7 26.Rf1 Ra2 27.Nh7 Kg8 28.Nf6 Kf7 29.Ng4 Kg8 30.Qd3 Bg7 31.Qg6 Rb2 32.Qe8 Kh7 33.Qe4 Kh8 34.Rf5 Bd4 35.Kh2 (35.Kh2 Be5 36.Re5 de5 37.Qe5 Kg8 38.Qb2+-) 1–0. Woschkat,Karl_Heinz – Inglis,Gary, IECG, 1998.

5.d4 ed4 6.ed4 Nf6 7.Nf3 Be7 8.Be2 0-0 9.0-0 d5 10.c5 bc5 11.bc5 c6 12.Re1 Ne4 13.Nbd2 Nd2 14.Qd2 Bf6 15.a4 Ba6 16.Qb4 Be2 17.Re2 Qc8 18.Qa5 Bd8 19.Qc3 Qa6 20.Qc2 Nd7 21.Bc3 Nf6 22.Rb1 Ne4 23.Ba1 Ba5 24.Qd1 Rfb8 25.Reb2 Rb2 26.Bb2 Bc3 27.Ng5 Bb2 28.Ne4 Bd4 29.Qd4+= de4 30.Qe4 g6 31.Rd1 Rb8 32.h3 Rc8 33.Rd7 Qc4. Bonetti,Shane – guest1703, ICC, 2002.

5.d4 ed4 6.Bd4 Nc6 7.Bc3 Nf6 8.b5 Nb8 9.Nf3+= Ne4 10.Bb2 h6 11.Nbd2 Nf6 12.Be2+/- Be7 13.0-0 0-0 14.a4 a5 15.Nb3 Nbd7 16.Rc1 Nc5 17.Nc5+= dc5 18.Qc2 Qc8 19.Rcd1 Qg4 20.Bf6 Bf6= 21.h3 Qh5 22.Rd7 Bf3? 23.Bf3+- Qf3?? 24.gf3 Bd4 25.ed4 Rad8 26.Rd8 Re8 27.Re8# 1–0. M8IN3 – jjgg33, Live Game Caissa's Web, 2005.

5.Nf3 a6 6.d4 e4 7.Nfd2 d5 8.cd5 Bd5 9.a3 Nf6 10.Nc3 Be7 11.Qc2 Qd7 12.Nd5 Qd5 13.Qc7 Bd6?? 14.Qc8 Ke7 15.Qh8 Nbd7 16.Qg7 Rc8 17.Ba6 Rc2 18.Bc4! Rc4 19.Nc4 Qc4 20.Rd1 Qb3 21.Rd2 Qa2 22.0-0 Qe6 23.Rc1 Nf8 24.d5! Qg4 25.Bf6 (25.Bf6 Ke8 26.Qg4 Ne6 27.de6 Bh2 28.Kh2 fe6 29.Qg8#) 1–0. Bonetti,Shane – guest1657, ICC, 2002.

5.Nf3 a6 6.Be2 f5 7.a3 Nf6 8.d3 Be7 9.Nbd2 0-0 10.0-0 Nbd7 11.Qc2 e4 (11...Qe8 12.d4 Ne4 13.de5 Ne5 14.Ne5 de5 15.Bf3 Nd2 16.Bb7 (worse is 16.Qd2 Bf3 17.gf3 Rd8+=) 16...Nf1 17.Bd5 Kh8 18.Ba8 Ne3 19.fe3 Qa8 20.Be5=) 12.de4 (12.Nd4 Rf7+/-) 12...fe4 (12...Ne4!? 13.Bd3 Bf6 14.Bf6 Ndf6+=) 13.Ng5+/- c5 (better is 13...Qc8!?+/-) 14.Ne6+- (worse is 14.Nge4 cb4 15.ab4 Ne4 16.Ne4 Qc7+/-) 14...Qc8 15.Nf8 Qf8 16.Rfd1 Re8 17.Nf1 Ne5 18.Be5 de5 19.bc5 bc5 20.Rab1 Ba8 21.Rb6 Qf7 22.Ra6 Rf8 23.Ng3 h6 24.Rb1 Nh7 25.Rf1 Bh4 26.Ne4 Be4 27.Qe4 Bf2 28.Kh1 Ng5 29.Qd5 Qd5 30.cd5 Be3 31.Rf8 Kf8 32.d6 Ke8 33.Bb5 Kf8 34.Ra8 Kf7 35.d7 Ne6 36.d8Q Nd8 37.Rd8 Bd4 38.a4 e4 39.g3 e3 40.Kg2 Ke7 41.Rd4! cd4 42.Kf3 Kd6 43.Ke4 Kc5 44.Kd3 g5 45.g4 (45.g4 e2 46.Ke2+-) 1–0. Fournier,Frederic (1795) – pipas, Active, 2007.

5.Nf3 a6 6.Be2 Nf6 7.0-0 =.

5.Nf3 Na6 6.a3 d5 7.Be5 dc4 8.Bc4 Bd6 9.Bg7 b5 10.Bb5 Ke7 11.Bh8 1-0. zembelek1 (2125) - muralir (1630), Rated Classical tournament, lichess.org, 2017.

5.Nf3 c5 6.b5 Nd7 7.d4 Ngf6 (better is 7...ed4!? 8.ed4 Qe7 9.Kd2 cd4 10.Bd4 Ne5=) 8.de5+= Bf3 9.Qf3 Ne5 10.Qf5 g6 11.Qc2 Qe7 12.Nd2 Bg7 13.Be2 0-0 14.0-0 Rad8 15.Rad1 h5 (15...d5 16.a3+=) 16.Nf3 Nfg4 17.h3 Nf3 18.Bf3 Ne5 19.Bd5 Kh7 20.e4 f5 21.ef5 Rf5 22.Be4 Rf6 (22...Rf4 23.Bc1 Re4 24.Qe4 Qf7+-) 23.f4 Nf7 24.Bf6 Qf6 25.Qe2 Re8 (25...Kh6 26.g4 hg4 27.hg4+-) 26.Qh5 (better is 26.Bg6 Qg6 27.Qe8 Bd4 28.Kh1 Nh6 29.Qd7 Qg7+-) 26...Bh6 27.Qd5 (27.Qf3!? Kh8+-) 27...Bf4 28.g3! Be3 (28...Bg3 29.Qf7 Double attack (29.Rf6 Pinning; 29.Rf6 Deflection; 29.Rf3 Decoy)) 29.Kh1 (29.Kh1 Bf2 30.Kg2+-) 1–0. Fournier,Frederic (1875) – Vujicic Jerzdimir, Ch Club, 2003.

5.Nf3 c5 6.bc5 e4 7.c6 Nc6 8.Nd4 =.

5.Nf3 c5 6.bc5 e4 7.Nd4 dc5 8.Qa4 Nc6 9.Nf5 =+.

5.Nf3 c6 6.d4 e4 7.Nfd2 d5 8.Qb3 Nf6 9.Nc3 a6 10.a4 a5 11.ba5 Ra5 12.Be2 Be7 13.0-0 0-0 14.Rfb1 Na6 15.c5 Ba8 16.cb6 Nb4 17.Ba3 Qb6 18.Bb4 Qb4 19.Qb4 Bb4 20.Rb4 h6 21.Nb3 Ra7 22.a5 Rb7 23.Rb7 Bb7 24.Nc5 Bc8 25.a6 Bg4 26.a7 Be2 27.a8Q Ra8 28.Ra8 Kh7 29.Ne2 1-0. zembelek (2185) - xedfr (1710), Rated Classical tournament, lichess.org, 2016.

5.Nf3 Nc6 6.b5 Nce7 7.d4 +=.

5.Nf3 Nc6 6.b5 Nce7 7.Be2 Nf5 8.a4 (8.0-0 a6+=) 8...Ngh6 (8...a6 9.0-0+=) 9.a5 (9.0-0 e4 10.Nd4 a6+=) 9...Be7 (9...ba5!? 10.Ra5 c5+=) 10.a6+- Be4 (better 10...Bc8!?+-) 11.d3+- Bf3 12.Bf3 (12.gf3?! Bh4 13.0-0 Qf6=) 12...Rb8 13.Bc6 Kf8 14.Na3 (14.Nc3 Bg5+-) 14...g6 (14...Bf6 15.0-0+-) 15.Qf3 (15.g4 Ng7+-) 15...Bf6 16.0-0-0 (16.Be4 Kg7+-) 16...Nh4 (16...Kg7 17.Kb1+-) 17.Qe2 (better 17.Qh3+-) 17...N6f5? (better 17...Kg7!?+-) 18.g3+- Ng2? (18...Ne7 19.gh4 Nc6 20.bc6 Qc8+-) 19.Bg2 Kg7 20.Nc2 Ne7 21.Nb4 (21.d4 ed4 22.Nd4 Qf8+-) 21...Qf8 (21...c5 22.Nd5 Nd5 23.Bd5+- (23.cd5?! Qd7+-)) 22.Ba3 (22.f4 c5 23.bc6 b5+-) 22...c5 23.bc6 Qc8 (23...Qd8 24.Nd5 Nd5 25.cd5+-) 24.d4 (24.Kd2 Qc7+-) 24...ed4 25.ed4 Re8 (25...Nf5 26.Bb2+-) 26.Qd3 Nf5 (26...Qc7 27.Rhe1+-) 27.d5 (27.Bh3 h6+-) 27...Nd4 (27...b5 28.cb5 Nd4 29.Bb2 Nb5 30.Bf6 Kf6 31.Kd2+-) 28.Rde1 (28.Bb2 Ne2 29.Kc2 Bb2 30.Kb2 b5 31.cb5 Qc7+-) 28...Qg4 (28...b5 29.Bb2 bc4 30.Qc4 Ne2 31.Re2 Re2 32.Qe2+-) 29.h3 Qg5 (29...Qh5 30.Kd2 b5 31.cb5 Re1 32.Re1 Nb5 33.Rc1 Na3 34.Qa3+-) 30.f4 Qf5 (30...Qh5 31.Nc2 Ne2 32.Re2 Qe2 33.Qe2 Re2 34.Bf3+-) 31.Qf5 (31.Be4 Re4 32.Qe4 Qc8+-) 31...gf5 (31...Nf5 32.Nc2+-) 32.Nd3 Be7 (32...Nb3 33.Kc2 Nc5 34.c7+-) 33.Re7! Re7 34.Bd6 Rbe8 (34...Ree8 35.Bb8 Rb8 36.c7+-) 35.Be7 Re7 (35...Nc6 36.dc6 Re7 37.Kd2+-) 36.d6 Re2 (36...Nc6 37.de7 Ne7 38.Rd1+-) 37.c7 Rc2 38.Kb1 Rc4 39.d7 Rc7 40.d8Q Rc2 41.Qd4 Kg6 42.Kc2 (42.Kc2 b5 43.Ne5 Kg7 44.Qa7 Kh6 45.Qf7 b4 46.Qf6 Kh5 47.Bf3; 42.Ne5 Kg7 43.Ng4 Kf8 44.Qd6 Kg8 45.Nh6 Kg7 46.Nf5 Kg8 47.Qd8) 1–0. jaddwarrior (1865) – omega3i (1740), ChessWorld.net, 2013.

5.Nf3 Nc6 6.b5+= Nce7 7.Be2 Nf6 8.Nc3 g6 9.0-0 Bg7 10.d4 ed4 11.Nd4 Qd7 12.Bf3 c6 13.bc6+- Nc6 14.Nc6 Bc6 15.Bc6 Qc6 16.Nd5 Nd5?? 17.cd5 Qd7 18.Bg7 Rg8 19.Bf6 Qf5 20.Qa4 Kf8 21.Qc6 Re8 22.Qd6 (22.Qd6 Re7 23.Qe7#) 1–0. pierred – avatarm, chesspark.com, 2007.

5.Nf3 Nc6 6.b5 Nce7 7.Be2 Ng6 8.0-0 a6 9.ba6 Ba6 10.Qa4 Qd7 11.Qd7 Kd7 12.d4 Be7 13.Rd1 (13.Rd1 ed4 14.Nd4+=; 13.de5!? de5 14.Ne5 Ne5 15.Be5+/-) 1–0. pierre (2120) – pituflu, internet, 2007.

5.Nf3 Nc6 6.b5 Nce7 7.Be2 Ng6 8.0-0 Nf6 9.d4 e4 10.Nfd2 Be7 11.Nc3 d5 12.Qc2 Qd7 13.cd5 Bd5 14.Nd5+- Nd5 15.Ne4 0-0 16.Nc3 Nc3 17.Qc3 Rac8 18.h3 c6 19.d5! Bf6 20.dc6 Qd8? 21.Qc2 Bb2 22.Qb2 Rc7 23.Rad1 Qe7 24.Rd4 Rd8 25.Rd8 Qd8 26.Rd1 Qe7 27.Bc4 Ne5 28.Qe5 h6 29.Qe7 Re7 30.Rd7 Kf8 31.Rd8 Re8 32.c7 Ke7 33.Re8 Ke8 34.c8Q (34.c8Q Ke7 35.Qc7 Kf6 36.Qf7 Kg5 37.Qf4 Kg6 38.Bd3 Kh5 39.Qg4#) 1–0. marre – stemu, internet, 2010.

5.Nf3 e4 6.Nd4 c5 7.Nc2 d5 8.bc5 bc5 9.cd5 Bd5 10.Bb5 Bc6 11.a4 Nf6 12.Bf6 Qf6= 13.Qg4 Nd7 14.Nc3 Be7?? 15.Nd5!!+- Qd6 16.Bc6 Qc6 17.Qe4 Qd6 18.Ne7 Nb6 19.Nf5 Qe6 20.Ng7 Ke7 21.Ne6 fe6 22.a5 Nd5 23.d4 c4 24.Rb1 (24.Rb1 Rhb8 25.Qh7 Kf6 26.Rb8 Rb8 27.Na3+-) 1–0. Roldan,Antonio – Benbachir,Khalid, IECG, 1998.

5.Nf3 e4 6.Nd4 Ne7 7.Be2 Nbc6 8.Nc6 Bc6 9.b5 Bb7 10.0-0 Nf5 11.a4 a6+= 12.d3 ed3 13.Bf3 Bf3 14.Qf3 Nh4 15.Qe4 Qe7?? 16.Qa8+- Kd7 17.Qc6 Kd8 18.ba6 Qd7 19.Qb7 c5 20.Qb8 Qc8 21.a7 Ng2 22.Qc8 Kc8 23.a8Q Kd7 24.Kg2 h5 25.a5 ba5 26.Ra5 g5 27.Ra7 Ke6 28.Qd5# 1–0. Woelfelschneider,Peter – Kientzler,Roland, corr CiF, 1991.

5.Nf3 e4 6.Nd4 f5 7.Be2 Nf6 8.0-0 g6 9.Nc3 Bg7? (9...Kf7 10.Nd5 Bg7+-) 10.d3?? (better 10.Ne6 Qe7 11.Nd5 Bd5 12.cd5+-) 10...Qe7 11.de4 Ne4 12.Ne4 fe4 13.Qb3 0-0 14.c5 d5 15.b5?? (15.Rac1 bc5 16.Rc5 c6+/-) 15...c6?? (better 15...bc5 16.Ba3 Be5-/+) 16.cb6 ab6 17.bc6 Nc6 18.Qb6 Nd4 19.Bd4 (19.ed4 e3 20.Bf3 Rab8=) 19...Bd4 20.Qd4 Ba6 (better 20...Qf6!?+/-) 21.Ba6+- Ra6 22.Qd5 Qe6 23.Qe6 Re6 24.a4 Ra8 25.Ra3 Rea6 26.Rfa1 Kg7 27.a5 Kh6 28.Ra4 Kg5 29.Re4 Ra5 30.Ra5 Ra5 31.g3 Ra2 32.Kg2 Kf5 33.Rc4 h5 (33...Ra7 34.h4 Re7 35.g4 Kf6 36.Rc3+-) 34.Kf3 (34.h4 Ra6+-) 34...Kf6? (34...g5 35.h3 Kf6 36.Rc1+-) 35.Rc5 (35.Rc6 Kg7 36.h4 Ra7+-) 35...Ra3? (35...g5+-) 36.h4 Kg7 37.Rc7 Kh6 38.Rc6 Ra5 39.e4 Ra4 40.Kf4 Ra3 41.f3 Ra2 42.e5 (better 42.Rc7 Ra1+-) 42...Rh2 (42...Ra4 43.Ke3 Ra7+-) 43.e6 (better 43.Rc7!? Re2+-) 43...Re2 44.Rb6 Kg7 45.g4 hg4 46.fg4 Rh2 (46...Re1 47.Ra6+-) 47.e7 (better 47.Kg5 Re2 48.Rb7 Kf8+-) 47...Re2 48.Rb7 Re7 (48...Kf6+-) 49.Re7 Kf6 50.Rb7 g5 (50...Ke6 51.Rb6 Kd5 52.Rg6 Kd4 53.h5 Kc5 54.h6 Kc4 55.g5 Kd4 56.h7 Kc4 57.h8Q Kd3 58.Rd6 Kc4 59.Rc6 Kb5 60.Qc8 Ka4 61.Rb6 Ka3 62.Qa8) 51.hg5 Ke6 52.Rb6 (52.g6 Kd5 53.g7 Kc6 54.Rb3 Kc5 55.g8Q Kd6 56.Ke4 Ke7 57.Rb7 Kd6 58.Qd5) 52...Kd5 53.Kf5 Kc5 (53...Kc4 54.g6 Kc5 55.Re6 Kc4 56.g7 Kd3 57.g8Q Kc3 58.Qc8 Kd2 59.Rd6 Ke2 60.Qc2 Kf3 61.Rd3) 54.Re6 Kd5 (54...Kc4 55.g6 Kb4 56.g7 Kc3 57.g8Q Kc2 58.Qc8 Kd2 59.Rd6 Ke2 60.Qc2 Kf3 61.Rd3) 55.g6 Kd4 (55...Kc4 56.g7 Kc3 57.g8Q Kd3 58.Qc8 Kd4 59.Rd6 Ke3 60.Qc2 Kf3 61.Rd3) 56.g7 Kd5 (56...Kd3 57.g8Q Kc2 58.Qc8 Kd2 59.Rd6 Ke2 60.Qc2 Kf3 61.Rd3) 57.g8Q Kc5 58.Qd8 Kc4 (58...Kb4 59.Qc7 Kb5 60.Rb6 Ka4 61.Qa7) 59.Re7 Kb5 (59...Kb4 60.Qc8 Kb5 61.Rb7 Ka4 62.Qa8) 60.Rc7 Ka6 (60...Kb4 61.Qb8 Ka4 62.Ra7) 61.Qa8 (61.Qb8 Ka5 62.Ra7) 61...Kb6 (61...Kb5 62.Qb8 Ka4 63.Ra7) 62.Qb8 Ka6 (62...Ka5 63.Ra7) 63.Ra7 1-0. GM_HUSARZ (2105) - FEDOR50 (2020), Rated Bullet game, lichess.org, 2015.

5.Nf3 f6 6.Be2 Nh6 7.a3 Be7 8.0-0 0-0 9.d4 e4 10.Nfd2 f5 11.Qc2 c6 12.Nc3 c5 13.d5 a6 14.bc5 bc5 15.Rab1 Ra7 16.Ba1 Bf6 17.Rb3 Bc3 (17...Nd7!?+=) 18.Qc3 Ba8? (better is 18...Rf7+/-) 19.Rfb1+- Qc7 20.Qb2 Nd7 (20...Nc6 21.dc6 Bc6+-) 21.Bh5 (21.Qg7) 21...Nf6+/- 22.Be2 Qf7 (better is 22...Nd7!? 23.Qg7) 23.Rb8 Rb8? 24.Qb8+- Qf8 25.Qa7 Bd5 26.cd5 Nf7 27.Rb8 Ne8 28.Ba6 Ne5 29.Bb5 Qf7 30.Re8 Qe8 31.Be8 Nd3 32.Qf7 Kh8 33.Qf8 (33.Bg7) 1–0. Fournier,Frederic – Erickf, Active (5/0), 2005.

5.Nf3 g6 6.Nc3 Bg7 7.d4 e4 8.Nd2 f5 9.g4 Qd7 10.b5 Nh6 11.gf5 Nf5 12.Nde4+/- 0-0 13.h4 Qe6 14.Bg2 Nd7 15.Ng5 Qc4?? 16.Bb7 Rae8 17.Bd5 (17.Bd5 Qd5 18.Nd5+-) 1–0. marre – stosdy, internet, 2010.

5.Nf3 g6 6.Be2 Bg7 7.d3 a5 8.b5+=.

5.Nf3 g6 6.Be2 Bg7 7.d3 Ne7 8.Nbd2 0-0 9.Qc2 Nd7 10.0-0 c5 11.b5 a6 12.a4 ab5 (12...f5 13.Ng5 Rf6 14.f4=) 13.cb5 (13.ab5 Qc7=) 13...Nd5 14.Qb3 (14.Nc4 Nb4 15.Qc3 Bf3 16.Bf3 d5=) 14...Ne7 15.Nc4 Bd5 (15...Qc7 16.a5=) 16.e4+= Bc4 17.dc4 Nf6 (17...Qb8 18.Qd3+=) 18.Qc2 Nh5 19.Rfd1 Qc7 20.Qd2 (20.g3 Rfd8+=) 20...Rfd8 21.Bc3 Nf4 22.Bf1 Bh6 23.Qc2 (23.Qe1 f5+=) 23...Ne6 24.Bd2 (24.Bd3 Nd4 25.Nd4 cd4+=) 24...Bd2= 25.Rd2 Kg7 (25...Nd4 26.Nd4 cd4 27.Bd3=) 26.Qc3 (26.Qd3 f5=) 26...Ng8 (26...Nd4 27.Nd4 cd4 28.Qg3=) 27.Rda2 (27.Bd3 Nd4=) 27...Ra5= 28.Nd2 Nf6 29.Bd3 (29.Nb3 Ra7 (worse is 29...Ne4 30.Qe3 Nf6 31.Na5 ba5 32.Rb2+/-) 30.Bd3 Nf4=) 29...Nd4 30.h3 (30.Nb3 Nb3 31.Qb3 Qb7=) 30...Nh5 (30...Qb7 31.f3=) 31.g3 (31.Nb3 Nb3 32.Qb3 Nf4=) 31...Rf8 (31...Rda8 32.Nb3 R5a7 33.Kg2=) 32.Nb3 Nb3 33.Qb3 Qd7 34.Bf1 f5 (34...Nf6 35.Bg2=) 35.ef5+= gf5 (35...Qf5 36.Rd1 Qf6 37.Bg2+=) 36.Qf3 (better is 36.Rd1+=) 36...Qf7 (better is 36...Nf6=) 37.Qc6+- Qg6 (better is 37...Qa7+-) 38.Qb6 Raa8 39.Rd1 Rad8 40.Rad2 Ng3 (40...f4 41.Qc7 Qf7 42.Qf7 Kf7+-) 41.fg3 Qg3 (41...f4+-) 42.Rg2 (42.Rg2 Qg2 43.Bg2+-) 1–0. Hilbert,Stephan J – Foster,Duncan, FICGS, 2015.

5.Nf3 g6 6.Be2 Bg7 7.d3 Ne7 8.e4 Nd7 (8...0-0 9.0-0=) 9.Nbd2 (9.0-0 0-0=) 9...0-0 10.0-0 h6 (10...a5 11.a3=) 11.Qc2 (11.d4 a5 12.b5 f5=) 11...c5 12.b5 Kh7 (12...f5 13.Rfb1=) 13.Nb3 (13.Bc1 f5=) 13...g5 (13...f5 14.a4=) 14.Rfd1 (14.a4 f5=) 14...Ng6 (14...f5 15.Bc1=) 15.g3 (15.Nfd2 Qc7+=) 15...Nf6 (15...f5 16.Nbd2=+) 16.Bf1 (16.Nfd2 Qd7=) 16...Bc8 (16...a6 17.ba6 Ra6 18.h3=) 17.h3 (17.Bg2 Be6=) 17...Ng8 (17...a6 18.ba6 Ra6 19.Rdb1=) 18.Bg2 g4 (18...a6 19.a4=) 19.hg4 Bg4 20.Re1 (better 20.Rdb1=) 20...f5? (20...a6 21.ba6 Ra6 22.a3=) 21.Qc3 (better 21.Nh2+-) 21...f4= 22.gf4? (22.Rf1!?=) 22...Bf3 (22...Nf4 23.Nbd2 Qf6-+) 23.Bf3=+ Nf4 24.Bg4?? (better 24.Bc1 Qh4 25.Bf4 Rf4 26.Re3–/+) 24...Qg5 (better 24...Qh4 25.d4 Qg4 26.Qg3 Ne2 27.Re2 Qe2 28.dc5 dc5 29.Ba3-+) 25.f3 Nf6 26.Kf2 (26.Qd2 Ng4 27.d4 Ne3 28.Kf2 ed4 29.Bd4 Bd4 30.Nd4 cd4 31.Rg1 Qh4 32.Rg3 Qh2 33.Ke1 Qg3 34.Qf2 Nd3 35.Kd2 Qf2 36.Kd3 Qc2 37.Kd4 Qd2) 26...Ng4 27.fg4 Nd5 28.Kg3 (28.Ke2 Qe3 29.Kd1 Nc3 30.Bc3 Qd3 31.Bd2-+) 28...Nc3 (28...Qf4 29.Kh3 Qf2 30.g5 Nf4 31.Kg4 h5) 29.Bc3 Qf4 (29...Rf4 30.Na5 Qg4 31.Kh2 Rf2 32.Kh1 Qg2) 30.Kh4 (30.Kh3 Qf3 31.Kh2 Qf2 32.Kh1 Rf3 33.Re3 Re3 34.Be5 Rh3 35.Bh2 Rh2) 30...Qf2 (30...Qh2) 31.Kh5 (31.Kh3 Rf3) 31…Qh2 0–1. Goldmund,Heike – Foster,Duncan (1675), FICGS, 2015.

5.Nf3 h6 6.d4 Be7 7.d5 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 Qd7 11.Nbd2 Nf6 12.h3 0-0 13.b5 Qf5 14.e4 Qd7 15.Bd3 Bc8 16.Qa4 Qd8 17.Qa7 Nh7 18.Qb8 Qd7 19.Qa7 1-0. Pashtunboy (2105) - kijek (2080), Rated Classical game, lichess.org, 2016.

5.Nf3 h6 6.Be2 Be7 7.Nc3 Nf6 8.0-0 Nbd7 9.Qb3 0-0 10.Nd5 Nd5= 11.cd5 a5 12.a3 ab4 13.ab4= c5 14.dc6+= Bc6 15.Bd3 e4 16.Nd4+= Bb7 17.Ra8 Ba8 18.Bb5 Ne5 19.Nf5 Bf6 20.Ra1 Bb7 21.h3 d5 22.Rc1 Nd3 23.Bd3+/- Bb2? 24.Qb2+- (24.Qb2 Qg5 25.Qe5 ed3 26.Rc7+-) 1–0. pier_e – nsk2009, internet, 2009.

5.Nf3 h6 6.Be2 Nf6 7.0-0 Nc6 8.b5 Ne7 9.Ne1 g5 10.Qc2 Bg7 11.f3 0-0 12.Nc3 a6 13.a4 ab5 14.ab5 Ra1 15.Ba1 Qa8 16.Nd3 c6 17.Bb2 c5 18.Ra1 Qb8 19.Nf2 Ng6 20.Nce4 Ne4 21.Ne4 Be4 22.Qe4 Qc7 23.Ra8 Ra8 24.Qa8 Kh7 25.Qe4 Kh8 26.Qc2 Qa7 27.Qb1 Ne7 28.Qa1 Qa1 29.Ba1 Nf5 ½–½. valpa – Grunert, playchess.de, 2003.

6.d4 ed4 7.ed4 Qe7 8.Qe2 Qe2 9.Nge2= Nbd7 10.Nf4 c6 11.f3 d5= 12.b5 Bb4 13.Bd3 0-0 14.0-0 Bc3 15.Bc3 Rad8 16.a4 c5 17.dc5 Nc5 18.Bf6 Nd3 19.Bd8+- Nf4 20.Bg5 Ne6 21.Be3 dc4 22.Rfc1 Bd5 23.a5 ba5 24.Ra5 Nc7 25.Ba7 Ra8 26.b6 Ra7 27.bc7 Rc7 28.Rd5 g6 29.Rc3 Kg7 30.Rd4 Kf6 31.Rcc4 Rc4 32.Rc4 h5 33.Rc5 Ke6 34.h4 Kd6 35.Ra5 Ke6 36.f4 f5 37.Kf2 1–0. Wilting,W – Beyer,x, 1968.

6.d4 ed4 7.Qd4 Be7 8.Nf3 0-0 9.b5 Nbd7 10.Nd5 Nc5 11.Rd1 Qd7 12.Be2 Rae8 13.0-0 Qf5 14.Nh4 Qg5 15.g3 Nd5 16.cd5 Bf6 17.Qb4 Bb2 18.Qb2 f5 19.Bf3 Ne4 20.Rd4 Re7 21.Bg2 Qf6 22.Qc2 g5 23.Nf5 Qf5 24.Be4 Qe5 25.Bg2 Ref7 26.h4 gh4 27.Rh4 Bd5 28.Rg4 Kh8 29.Bd5 Qd5 30.Qc3 Rf6 31.Qc7 Qf7 32.Qf7 R8f7 33.Rd1 h5 34.Rf4 Rf4 35.gf4 Rd7 36.Rd5 Kg7 37.Rh5 Kg6 38.Rd5 Kf6 39.f5 Rd8 40.f4 Rg8 41.Kf2 Ke7 42.e4 Rg4 43.Kf3 Rg1 44.e5 de5 45.fe5 Rf1 46.Ke4 Re1 47.Kd4 Rd1 48.Kc4 Rc1 49.Kb3 Rb1 50.Kc2 Rf1 51.e6 Rf2 52.Kb3 Rf3 53.Kc4 Rf4 54.Kd3 Rf1 55.a4 Rd1 56.Ke4 Re1 57.Kf4 Rg1 58.Rd7 Ke8 59.Ra7 Rf1 60.Ke5 Ra1 61.Kf6 1-0. zembelek1 (2145) - todpepe (1835), Rated Classical tournament, lichess.org, 2017.

6.d4 Nbd7 7.d5 a6 8.Bd3 b5 9.cb5 Nd5 10.Nd5 Bd5 11.e4 Bb7 12.ba6 Ba6 13.Ba6 Ra6 14.Ne2 Nf6 15.Nc3 Qb8 16.b5 Ra5 17.a4 Nd7 18.Nd5+/- Nc5 19.0-0 Ne4? 20.Qe1+- Qb7 21.Qe4 f5 22.Nf6! (22.Nf6 Kf7 23.Qb7 Kf6 24.Bc3 Ra4 25.Ra4+-) 1–0. Van Rooijen,Peter – Cruz,Eudo, C–2001–563, 2001.

6.Nf3 Be7 7.a4 Nbd7 8.b5 a5 9.ba6 Ba6 10.d4 ed4 11.Nd4= Bb7 12.Nf5 0-0 13.Nb5 Re8=+ 14.Be2 Bf8 15.Bf3 Bf3 16.gf3 Ne5 17.Rg1 Kh8 18.Qe2 c6 19.Nbd6=+ Bd6 20.0-0-0 Re6 21.Ng7 Qc7? 22.Ne6+- fe6 23.f4 Ned7 24.Qd3 Be7 25.Qd7 Qd7 26.Rd7 Ba3 27.Ba3 Nd7 28.Bb2 e5 29.fe5 Rf8 30.e6 Nf6 31.e7 (31.e7 Rg8 32.Bf6 Rg7 33.e8Q#) 1–0. Zylla,Johannes – Roepke, BS–MK Kreisliga, 1992.

6.Nf3 Be7 7.b5 c6 8.a4 c5 9.Be2 0-0 10.0-0 a5 11.d4 ed4 12.ed4 d5 13.dc5 Bc5 14.Ba3 dc4 15.Bc4 Ba3 16.Ra3 Qd1 17.Nd1 Bf3 18.Rf3 Nbd7 19.Re1 Rfe8 20.Ree3 Nc5 21.h3 Na4 22.Re8 Re8 23.Rd3 Nc5 24.Rd6 h6 25.Ne3 Rb8 26.Rc6 a4 27.Rc7 Nfd7 28.Bd5 a3 29.Ra7 Re8 30.Ra3 Re5 31.Ra8 Kh7 32.Bf7 Nd3 33.Bc4 Nb2 34.Bb3 Rb5 35.Bc2 g6 36.Ra7 Rc5 37.Rd7 Kg8 38.Bb3 Kf8 39.Rd2 Nc4 40.Bc4 Normal 1-0. MASZTALERZ (2135) - narachka29, Rated Classical game, lichess.org, 2015.

6.Nf3 Be7 7.d4 ed4 8.Nd4 0-0 9.Nf5 d5 10.Qb3 c5 11.b5 dc4 12.Bc4 Qd7 13.Nd5! Bd8 14.Nh6! gh6 15.Bf6 Qd6? 16.Bb2 Bd5 17.Bd5 Bf6 18.Rd1 c4 19.Qc4 Qe7 20.Bf6 Qf6 21.Ba8 Nd7 22.Rd7 Ra8 23.Qg4 Kf8 24.Qd4 (24.Qd4 Qd4 25.Rd4+-) 1–0. Kalanyos,Ferenc (2000) – Fehervari,Istvan (2085), HUN–chT2 Asztalos, 2007.

6.Nf3 Be7 7.Be2 0-0 8.0-0 Nbd7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 8.Nc3 Nbd7).

6.Nc3 Be7 7.d4 Ngf6 8.Qc2 0-0 9.Be2 c6 (9...ed4 10.Nd4 a5 11.b5=) 10.0-0+= Rc8 11.Rad1 Qc7 12.Qb3 e4 (12...g6 13.Rd2+=) 13.Nd2+/- d5 14.cd5 (14.b5!?+=) 14...cd5= 15.Rc1 Qb8 (15...Qd6 16.b5=) 16.a4 Bd6 17.h3 Rfe8 18.Bb5 Qa8 19.Bd7 (19.Rc2 a6 20.Be2 Qb8=) 19...Nd7=+ 20.Nb5 Bb8 21.Rc8 Rc8 22.Rc1 a6 23.Rc8 Bc8 24.Nc3 Bb7 (24...Nf6 25.b5 a5 26.f3=+) 25.Nf1 Nf6 26.Ng3 Bd6 27.b5 a5 28.Nf5 Bf8 29.Ne2 (29.Ba3 Qd8=) 29...g6 30.Nfg3 Qc8 31.Kf1 (31.Ba3 Bg7=+) 31...Kg7 (31...h5 32.Nc3-/+) 32.Ke1 (32.Ba3 Ba3 33.Qa3 h5=+) 32...h5 (32...Bb4 33.Kd1-/+) 33.Kd2 (better 33.Ba3!?=+) 33...h4-/+ 34.Nf1 Qf5 35.Ke1 Qg5 (35...Bb4 36.Nc3-/+) 36.g4 (36.Ba3 Qg2 37.Bf8 Kf8 38.Qa3 Kg7=) 36...Nh7 (36...hg3 37.Nfg3 Bd6-/+) 37.Nf4? (37.Ba3 Qd8 38.Bf8 Qf8=+) 37...Qd8 (better 37...Bd6-+) 38.Ba3=+ Ba3 39.Qa3 Ng5 40.Qc3? (better 40.Nd2=) 40...Nf3-+ 41.Ke2 (better 41.Kd1 Ng1 42.f3 Nf3 43.Ne2-+) 41...Qd6?? (better 41...Ng1 42.Kd1 g5 43.Nh5 Kg6-+) 42.Nd2=+ g5 (42...Nd2 43.Kd2 (43.Qd2? g5-+) 43...g5 44.Ne2=+) 43.Nh5= Kh6 44.Nf3 ef3 45.Kf3 f5 (better 45...Qh2 46.Ke2 Qh3=) 46.Qd3?? (better 46.Kg2+/-) 46...Bc8 (46...fg4 47.hg4 Bc8 48.Nf4 gf4 49.ef4-+) 47.Qc2 (47.Nf4 gf4 48.ef4 fg4 49.hg4 Qe6-+) 47...Bd7 48.Kg2 (48.Ng3 fg4 49.hg4 hg3 50.fg3 Kg7-+) 48...fg4 49.hg4 Bg4 (49...Bg4 50.Ng3 hg3 51.fg3 Qe6-+) 0-1. zembelek (2035) - JasonVoorhees (2090), Rated Blitz game, lichess.org, 2015.

6.Nc3 f5 7.d4 e4 8.Nd2 Ngf6 9.a4 Be7 10.a5 0-0 11.a6 Bc8 12.d5 Ne5 13.Nb5 Nfg4 14.h3 Nh6 15.Nd4 f4 16.Ne4 fe3 17.fe3 Bh4 18.Kd2 Bf5 19.Nf5 Nf5 20.g4 Nf3 21.Qf3 Ng3 22.Qg2 Ne4 23.Qe4 Rf2 24.Be2 Qf8 25.Raf1 Re8 26.Rf2 Bf2 27.Qf3 Be3 28.Qe3 Re3 29.Ke3 Qf7 30.Rf1 Qg6 31.Bc3 Qc2 32.Bd2 h6 33.Bd3 Qa2 34.b5 Qa3 35.h4 Qc5 36.Ke4 Qa3 37.g5 h5 38.Be3 Qc3 39.Rf5 Qb2 40.Bf2 g6 41.Rf6 Kg7 42.Bd4 Qg2 43.Ke3 Qg1 44.Rf2 Kh7 45.Ke2 Qg4 46.Ke3 Qg1 47.Be2 Kg8 48.Kd2 Qg3 49.Rf6 Qh4 50.Rg6 Kf8 51.Bf6 Qf4 52.Ke1 h4 53.Rh6 Qg3 54.Kd2 h3 55.Bh5 Qf2 56.Kd3 Qf5 57.Ke3 Qf6 58.Rf6 1-0. zembelek (2150) - Ficasame (1950), Rated Classical tournament, lichess.org, 2016.

6.Nc3 f5 7.d4 e4 8.Nd2 g6 9.c5 bc5 10.dc5 dc5 11.Na4 cb4 12.Bh8 Nc5 13.Nc5 Bc5 14.Nb3 Bd6 15.Bb5 c6 16.Bc4 Ne7 17.Bf6 Qc7 18.h3 0-0-0 19.Qc2 Rf8 20.Bg7 Rd8 21.Rc1 Be5 22.Be6 Kb8 23.Be5 Qe5 24.Bc4 c5 25.Be2 Rc8 26.Nc5 Nd5 27.Nd7 Ka8 28.Qc8 Bc8 29.Ne5 Nc3 30.Rc3 bc3 31.Bc4 c2 32.Kd2 a5 33.Kc2 Bb7 34.Rb1 Ka7 35.Rb7 Kb7 36.Bd5 Kb6 37.Nd7 Kb5 38.Kb3 a4 39.Kc3 a3 40.g4 fg4 41.hg4 h5 42.Be4 hg4 43.Bg6 g3 44.fg3 Kc6 45.Ne5 Kd5 46.Nd3 Ke6 47.g4 Kf6 48.Bf5 Kg5 49.e4 Kf6 50.e5 Ke7 51.g5 Kf7 52.g6 Ke7 53.e6 Kf6 54.Kd4 Kf5 55.e7 Kg6 56.e8Q Kf6 57.Ne5 Kf5 58.Qf7 Kg5 59.Ke4 Kh4 60.Qg7 Kh3 61.Qg4 Kh2 62.Nf3 Kh1 63.Qg1 1-0. zembelek1 (2185) - AlfrediG (1840), Rated Classical tournament, lichess.org, 2017.

6.d3 Ngf6 7.Be2 Be7 8.0-0 0-0 9.Nbd2 h6 10.a4 c5 11.b5 e4 12.de4 Ne4 13.Ne4 Be4 14.h3 Nf6 15.Nd2 Bb7 16.Rc1 d5 17.Bf3 Qd7 18.cd5 Nd5 19.Nc4 Rad8 20.Qb3 Nb4 (20...Bf6 21.a5+=) 21.Ne5 (better is 21.Rfd1 Qc7 22.e4+=) 21...Qc7?? (better is 21...Qc8=) 22.Qb4!!+- Bc8 (22...cb4 23.Nc6 Double attack (23.Rc7 Pinning; 23.Rc7 Deflection; 23.Nc6 Decoy)) 23.Qb3 Be6 24.Qc2 Bd6 25.Nc6 Rc8 (25...Rd7 26.Rfd1+-) 26.Rfd1 Bd7 (26...f6 27.Qg6 Bf7 28.Qg4+-) 27.Qc3 (better is 27.Rd6 Qd6 28.Rd1 Qc7+-) 27...f6 28.Qd3 Bc6 29.Bc6 (better is 29.bc6!? Rfd8 30.Qf5 Bh2 31.Kf1 Be5 32.Be5 Qe5 33.Rd8 Rd8 34.Qe5 fe5+-) 29...Rcd8 30.Bd5 Kh8 31.Qg6 (31.f4!? f5+-) 31...f5 (31...Be5 32.Be4 Rd1 33.Rd1 f5+-) 32.Qh6 1–0. algernon (2440) – jcosta (2460), net–chess.com, 2015.

6.d4 ed4 7.Bd4 Ngf6 8.Nbd2 c5 9.Bc3 d5 10.bc5 Nc5 11.Rc1 Nfe4 (11...a6 12.Bd4=) 12.Bd4 dc4 (12...a6 13.Be2=) 13.Bc4 Bd5 (13...Nd2 14.Bb5 Ke7 15.Qd2 Bf3 16.gf3+=) 14.Bb5 (14.Ne4 Ne4 15.Qa4 Ke7+-) 14...Ke7 15.Ne4 Be4 16.0-0 a6? (16...Rc8+/-) 17.Bc5?? (17.Rc5 bc5 18.Bc5 Ke6 19.Bd7 Qd7 20.Ng5 Kf5 21.Qd7 Kg5 22.f4 Kh6 23.Qh3 Kg6 24.Bf8 f5 25.Qg3 Kf6 26.Qg7 Ke6 27.Qe7 Kd5 28.Qd7 Kc4 29.Rc1 Bc2 30.Rc2) 17...bc5+= 18.Qd8 Kd8 19.Rfd1 Kc7 20.Rd7 Kb6 21.Be2 (21.Bd3 Bd3 22.Rd3 f6+=) 21...f6+= 22.Nd2 Bc6?? (better 22...Bf5 23.Rf7 Be6 24.Rb1 Ka5+/-) 23.Nc4 Kb5 24.Ne5 (24.Rb1 Ka4 25.Bd1) 24...Kb6+- 25.Rb1 (25.Rb1 Bb5 26.Nf7+-) 1-0. zembelek1 (2195) - jedeviendraig (2115), Rated Classical tournament, lichess.org, 2016.

6.d4 e4 7.Nfd2 Ngf6 8.Be2 Be7 9.0-0 0-0 10.Nc3 c5 11.a3 cd4 12.ed4 Rc8 (12...d5 13.cd5 Bd6 14.Nde4 Ne4 15.Ne4 Bh2 16.Kh2 Qh4 17.Kg1 Qe4 18.Bf3+=) 13.Qb3 (13.d5 Ne5+/-) 13...Re8 14.Rfe1 Bf8 (14...d5 15.cd5 (worse 15.Nd5 Nd5 16.cd5 Bg5=) 15...Bd6 16.Bb5+=) 15.Nf1 (15.Bf1 d5 16.cd5 Nb8+/-) 15...Nb8 (15...d5 16.Ne3+=) 16.a4 (16.d5 a6+/-) 16...d5+= 17.c5 (17.Ne3 dc4 18.Bc4 Qe7+=) 17...Nc6= 18.Bb5?? (better 18.Rad1=) 18...Nd4-+ 19.Qd1 Nb5 20.ab5 d4 (20...bc5!? 21.bc5 Bc5 22.Na4-+) 21.Ra7 dc3 22.Qd8 (better 22.Bc3!? Ba8 23.c6-/+) 22...Rcd8-+ 23.Bc3 Ba8 (23...Rd7 24.Bf6 gf6 25.Rc1-/+) 24.c6 (24.Bf6 gf6 25.c6 Bb4-/+) 24...Nd5-+ 25.Bd2 (25.Rc1 Nc3 26.Rc3 Bb4-+) 25...Rc8 26.Rea1 (26.Ne3 Nc7 (26...Bb4?! 27.Nd5 Bd2 28.Rea1=) 27.Rc7 Rc7-+) 26...Bb4 (better 26...Nc7 27.Rc7 Rc7-+) 27.h3?? (27.Bb4 Nb4 28.Ng3-+) 27...Bc5 (27...Bd2 28.Nd2 Nc3 29.R7a6 Nb5 30.Rb6-+) 28.Rd7? (28.Rb1 Re7 29.Re7 Ne7-+ (29...Be7?! 30.Ng3-/+)) 28...Nf6 (better 28...Nc7 29.Rc7 Rc7-+) 29.Rda7 Bc6! 30.bc6 Rc6 31.Be3 Nd5 32.Bf4?? (better 32.Bc5 bc5 33.Ng3-+) 32…Nf4 0-1. jhonores (2095) - Ne_Zha (2000), Hourly SuperBlitz Arena, lichess.org, 2020.

6.d4 f6 7.Nh4 Ne7 8.Qh5 g6 9.Qd1 Bg7 10.Nc3 0-0 11.Be2 ed4 12.ed4 f5 13.Bf3 Bf3 14.Nf3 c5 15.b5 Nc8 16.dc5 dc5 17.Qd5 Kh8 18.Qa8 Qe7 19.Kf1 Nd6 20.Qd5 Ne4 21.Re1 Re8 22.Ne4 Bb2 23.Nd6 1-0. zembelek1 (2105) - Meyby521 (1705), Rated Blitz tournament, lichess.org, 2017.

6.Be2 c5 7.b5 Ngf6 8.d3 g6 9.Nbd2 Bg7 10.0-0 0-0 11.a4 h5 12.h3 Re8 13.Re1 Qc7 14.Rc1 Nh7 15.d4 ed4 16.ed4 Bf3 17.Nf3 Re6 18.Qd2 Rae8 19.Bf1 Nhf8 20.d5 R6e7 21.Bg7 Kg7 22.Re7 Re7 23.Re1 Re1 24.Qe1 Ne5 25.Ne5 de5 26.f3 Qd6 27.Qe4 Nd7 28.Bd3 f5 29.Qe3 Nf6 30.Kf2 f4 31.Qe1 g5 32.Qb1 g4 33.hg4 hg4 34.Qh1 g3 35.Ke2 e4 36.fe4 Qe5 37.Qc1 Ne4 38.Kf3?? Attacking the backward pawn on f4 38...Ng5?? 39.Kg4= Qf6?? 40.Qf4+- Qf4 41.Kf4 Ne6 42.Kg3 Nd4 43.Kf2 Nf5 44.Bf5 a6 45.ba6 b5 46.ab5 Kf6 47.g4 Ke5 48.a7 Kd4 49.a8Q Kc4 50.Qa2 Kb5 51.Qb3 (51.Qb3 Ka6 52.Qa4 Kb6 53.Qc6 Ka7 54.Bc8 c4 55.Qb7) 1–0. Fournier,Frederic – Guest1140594, Partie amicale, 7m + 0s, 2007.

6.Be2 Be7 7.0-0 Ngf6 8.d4 Bf3 (8...0-0 9.Nc3+=) 9.Bf3+= e4 10.Be2 c6 11.Nd2 d5 12.c5 b5 13.Nb3 0-0 14.Na5 Qc7 15.a4 a6 16.ab5 ab5= 17.Qc2 Rfc8 18.Ra3 Ra6 19.Rfa1 Rca8 20.R1a2 Nb8 21.Qd1 Qd7 22.Qf1 Qc8 23.h3 h6 24.f3 Bd8 25.Qa1 ef3=+ 26.Bf3 Qe6 27.Qe1 g5 28.Bc1 g4 29.hg4 Ng4? 30.e4 de4? 31.Bg4+- (31.Bg4 Qg4 32.Rg3 Qg3 33.Qg3 Bg5 34.Bg5 hg5 35.Qg5 Kf8 36.Re2 Ra5 37.ba5 Ra5 38.Re4 Ra1 39.Kh2 Rh1 40.Kh1 f5 41.Re7 f4 42.Qg7#; 31.Be4 Ba5 32.ba5 f5-+; 31.Qe4?! Qe4 32.Be4 Bg5 33.Bg5 hg5+/-) 1–0. Cebolla Moli,Ricardo – Albaladejo,R, Cajas op, 1989.

6.Be2 Be7 7.0-0 h6 8.Nc3 c6 9.Qc2 Ngf6 10.Nh4 (10.d4 0-0+=) 10...g6 (10...0-0 11.Nf5=) 11.f4 Qc7 12.Rae1 c5 13.bc5 bc5 14.Bf3 g5 (14...Rb8!?+=) 15.Nb5+/- Qb6 16.Bb7 Qb7 17.Nf5 Bf8?? (better is 17...Qb6+/-) 18.Nbd6+- Bd6 19.Nd6 Ke7 20.Nb7 a5 21.fe5 Ne5 22.Be5 1–0. Janek – Nick, internet, 2016.

6.Be2 Ne7 7.d4 Ng6 8.Qc2 Be7 9.Nbd2 Nh4 10.Nh4 Bh4 11.Bf3 Bf3 12.Nf3 Be7 13.0-0+/- f6 14.a4 a5 15.b5 0-0 16.e4 Qc8 17.Rac1 c5 18.bc6 Qc6 19.Rfe1 Rac8 20.Qb3 Kh8 21.Ba3 Qc7 22.Qb5 Qc6 23.Qb3 Qc7 24.Re3 Rfe8+= 25.Qc2 Nf8 26.d5 Ng6 27.g3 Qd7 28.Kg2 Rf8 29.Rb3 Rb8 30.Rb5 Bd8 31.Re1 Bc7 32.Bc1+/- f5 33.ef5 Qf5 34.Qf5 Rf5 35.Ng5 Nf8 36.Be3 h6 37.Ne4 Nd7 38.g4 Rf7 39.g5 Kh7 40.Kh1 h5 41.g6+- Kg6 42.Rg1 Kh7 43.Ng5 Kg8 44.Nf7 Kf7 45.Rbb1 Nf6 46.Rg5 g6 47.Rbg1 Rg8 48.f4 Ng4+= 49.R1g4 hg4 50.Rg4 Re8 51.fe5+/- Re5 52.Rf4 Rf5 53.Rf5+/- gf5 54.Kg2 Kg6 55.Bf4 Kh5 56.Kf3 Bb8 57.Be3 Bc7+/- 58.Kf4 Kg6 59.h4 Bd8 60.h5 Kh5 61.Kf5 Bh4 62.Bf4 Be1 63.Bd6 Bb4 64.Bc7 (64.Bc7 Kh6 65.Bb6+-) 1–0. Krafzik,Joachim (2115) – Roettger,Franz, GER–ch Seniors, 2001.

6.Be2 Ngf6 7.0-0 Be7 8.a3 c5 9.d4+= ed4 10.ed4 0-0 11.d5 cb4 12.ab4 b5 13.Nc3 bc4 14.Bc4 Qc7 15.Bb3 a5 16.b5 Nc5 17.Bc2 a4 18.Na4 Na4 (worse 18...Bd5 19.Bf6 Bf3 20.Qf3 Bf6 21.Qf5+/-) 19.Ra4 Ra4 20.Ba4 Nd5 21.Bb3 Nf6 (21...Bf6 22.Bd5 Bb2 23.Ng5 Bd5 24.Qd5+=) 22.Nd4 d5 23.Nf5 Bd8 24.Qd4 Re8 25.Rd1 g6 (better 25...Qb8!?+=) 26.Ne3+/- Re4 27.Qc3 Qc3 28.Bc3 Be7 29.Bf6 Bf6 30.Bd5 Bd5 31.Rd5 (31.Nd5 Kg7+-) 31...Rb4 32.g3 Kg7 33.Kg2 h5 34.h4 Bd4?? (34...Kf8 35.Kf3+-) 35.Kf3 (better 35.Nc2 Rb2 36.Nd4+- (36.Rd4?! Rc2 37.Rb4 Rc7+-)) 35...Bf6 36.Ke2 Rb2 37.Kf3 Be7?? (37...Rb4 38.Nc2 Rb3 39.Ke4 Bb2+-) 38.Rd7 (38.Nc4!? Rb1+-) 38...Bc5+/- 39.Rb7 Be3 (39...Kf6 40.Nd1 Rb1 41.Ke2+/-) 40.Ke3 Kf6 41.b6 Ke6 42.Rb8 (42.f4 Rb3 43.Kd4 Rg3+/-) 42...Kd7 43.b7 Kc7? (better 43...Kc6+/-) 44.Rf8+- Kb7 45.Rf7 Kc8 46.Rf6 Rb3 47.Kf4 Rb4 (47...Rb5 48.Rg6 Rb2 49.f3+-) 48.Kg5 Rg4 49.Kh6 Kd8 (49...Re4 50.Rg6 Re5 51.f4+-) 50.Rg6 (better 50.Rf4 Rg3 51.fg3+-) 50...Rb4 51.Kh5 Ke7 52.Ra6 (52.f4 Rb5 53.Kh6 Rf5+-) 52...Kf7 (52...Rb3 53.g4 Rf3 54.Ra2+-) 53.f4 Kg7 54.g4 (better 54.f5!? Rb5 55.g4 Rc5+-) 54...Rb5 (54...Rf4 55.Ra7 Kg8+-) 55.f5 1-0. dannysmet (2065) - RSN13 (2060), Rated Blitz game, lichess.org, 2021.

6.Be2 Ngf6 7.0-0 Be7 8.d4 ed4 9.Nd4 0-0 10.Bf3 Bf3 11.Nf3 c5 12.b5 Qc7 13.Nc3 Rad8 14.Ng5 h6 15.Nge4+/- Ne5 16.Nf6 Bf6 17.Nd5 Qd7 18.f4 (18.f4 Ng4 19.Bf6 Nf6 20.Nf6 gf6 21.Qh5+/-; 18.Rc1 Qe6+/-) 1–0. guest4986 – guest6550, ICC, 2005.

6.Be2 Ngf6 7.d3 g6 8.0-0+= Bg7 9.Qc2 0-0= 10.Nbd2 Re8 11.Nb3 c5 12.b5 a5 13.e4 Nh5 14.Nfd2 Nf4 15.Nc1 Qg5 16.Bf3 f5 17.Ne2 Ne2 18.Be2 f4 19.a4 Qh6 20.g4 g5 21.Kg2 Bf6 22.Rh1 Nf8 23.Bc3 Ng6=+ 24.Rag1 Rf8 25.Nf3 Bc8 26.h3 Nh4 27.Nh4 Qh4 28.f3 Ra7 29.Be1 Qh6 30.Rh2 Rg7 31.Rgh1 Qg6 32.Bf2 ½–½. Finogenov,Mikhail – Semenov,Nikolai (2060), RUS–Cup sf, 2005.

6.Be2 g6 7.Nc3 Bg7 8.0-0 Ngf6 9.Qc2 0-0 10.d3 Ne8 11.d4 f5 12.d5 Ndf6 13.Ng5 Bc8 14.Qb3 Bh6 15.f4 Bg5 16.fg5 Ne4 17.Ne4+/- fe4 18.Rf8 Kf8 19.Rf1 Kg8 20.h4 Ng7 21.Bc3 Qe7 22.Be1 Bd7 23.c5 Nf5 24.c6 Be8 25.g4 Ng7 26.b5 Bf7+/- 27.Qc4 Rf8 28.Qe4 Ne8 29.Bd3 Kg7 30.Bc3 Qd8 31.Kg2 Qc8 32.Kg3 Qd8 33.Kh3 Qc8 34.h5 Kh8 35.Kg3 Kg7 36.h6 Kg8 37.Kh4 Qd8 38.Qc4 Qe7 39.e4 Kh8 40.Qb4 Bg8?? 41.Rf8 Qf8 42.Be5! (42.Be5 Ng7 43.Bg7 Qg7 44.hg7 Kg7 45.e5 Bf7 46.ed6 h5 47.dc7 Kh7 48.Qe7 Kg7 49.c8Q a6 50.Qcf8 Kh7 51.Qef7#) 1–0. pierre – teetoe, internet, 2008.

6.Nc3 Nf6 7.Qc2 0-0 8.Be2 a5 9.b5 Nbd7 10.d4 ed4 11.ed4 Re8 12.0-0 Bf8 13.Rfe1 g6 14.Nd2 Bg7 15.f3 (15.Bf3!? Bf3 16.Nf3 (worse is 16.gf3 Nf8+=) 16...Re1 17.Re1+/-) 15...Nh5= 16.Nce4 f5 17.Nf2 Qh4 18.g3 Ng3 19.hg3 Qg3 20.Kf1 Nf6 (20...Bh6 21.c5 bc5 (worse is 21...dc5 22.dc5 bc5 23.Qc3+-) 22.dc5 Be3 23.Bc4 d5 24.Re3 Re3+-) 21.Nh1?? (better is 21.c5 Nd5 22.Bc4+=) 21...Qh2-+ 22.Nf2 (22.d5 Nh5 23.Ne4 fe4 24.Be5 Re5 25.Bd3 Qh1 26.Ke2 ed3 27.Kd3 Qf3 28.Kd2 Bh6 29.Re3 Qe3 30.Kd1 Qe1) 22...Nh5 23.Nde4 fe4 24.Ne4 Be4 (24...Be4 25.Red1 Bc2 26.Rd2 Ng3 27.Ke1 Qg1; 24...Re4 25.Rec1 Ng3 26.Ke1 Re2 27.Qe2 Qe2) 0–1. Frech,Josef (1825) – Casteluzzo,Salvatore (1890), Wch Seniors, 1998.

6.Nc3 Nf6 7.Be2 =.

6.Nc3 Nh6 7.Bd3 a6 8.Nd5 Bd5 9.cd5+= Nd7 10.0-0 Nf6 11.e4 Qd7 12.Qe2 Qc8 13.b5 a5 14.Bc2+/- Nd7 15.d4+- f6 16.Nd2 0-0+/- 17.f4 ef4 18.Rf4 Rf7 19.Nc4 Nf8 20.Rf3 g5? 21.Rh3 Ng4 22.Rf1 f5 23.Rf5 Nf6 24.Rg5 Rg7 25.Rg7 Kg7 26.e5 (26.e5 Nd5 27.Qf3+-) 1–0. pcmvr (2775) – capacuba (2205), net–chess.com, 2008.

6.d3 Qd7 7.Be2 Bf6 8.Nc3 Ne7 9.Ne4 Be4 10.de4 0-0 11.0-0 Ng6 12.a3 Nh4 13.Nh4 Bh4 14.Bg4 Qc6 15.Rc1 Qe8 16.Qd5 Nc6 17.Rfd1 Ne7 18.Qd3 Ng6 19.c5 Be7 20.cb6+- cb6 21.Rc7 Qb8 22.Rdc1 Rd8 23.Qa6 d5 24.R1c6 Bf8 25.Rb7 d4 26.Rb8 Rab8 27.Rc7 d3 28.Qa7 d2 29.Bd1 f6 30.Rd7 b5 31.Rd8 Rd8 32.Qb6 Be7 33.Qb5 Kf8 34.a4 Rc8 35.Qb7 Rc1 36.Qa8 (36…Kf7 37.Qd5 Ke8 38.Qd2+-) 1–0. Schirmer,Michael – Hermann,Brunner, DESC–Einladungsturnier, 2002.

6.d4 ed4 7.Bd4 Bf6 8.Nbd2 Nd7 9.e4 Bd4 10.Nd4= Ne7 11.Bd3 Ne5 12.N2f3 N7g6 13.Nf5 Qf6 14.0-0 0-0 15.Re1 Ba6 16.b5+= Bc8 17.Be2 Nf3 18.Bf3= a5 19.e5+/- Bf5?? 20.ef6+- (20…Rae8 21.Qd4+-) 1–0. Dopper,Johan – Verkerk,Jan, 1994.

6.Be2 Nc6 7.a3 Nf6 8.d3 Qd7 9.Nbd2 h6 10.Qb3 g5 11.h3 Nd8 12.e4 Ne6 13.b5 Nf4 14.Bf1 g4 15.hg4 Qg4 16.g3 Ne6 17.Bh3 Qg8 18.Nh4 0-0-0 (18...a6!?+=) 19.a4 Kb8 20.Nf5 Nc5 21.Qc2 Bf8 22.a5 Ng4 23.ab6 cb6 24.Nb3 Kc7? (better is 24...Ne6+-) 25.Ra7 Nb3 26.Qb3 h5 (26...Kb8 27.Qa4 Rc8 28.f3+-) 27.Qd1 (27.c5 Kb8 28.c6 Bc6 29.bc6 Ka7 30.Ke2 d5 31.Ra1 Ba3 32.Ra3 Kb8 33.Qb6 Kc8 34.Ra8) 27...Bh6 (27...Ra8 28.Ra8 Ba8+-) 28.Bg4 1–0. Fournier,Frederic (1635) – tetecolotl, Active, 2008.

6.Be2 Nd7 7.d4 e4 8.Nfd2 Ngf6 9.Nc3 a6 10.0-0 d5+= 11.cd5 Nd5 12.Nde4 N7f6 13.Nf6+/- Nf6 14.a3 Qd6 15.Bf3 c6 16.e4 Nd7 17.e5 Qh6 18.Re1 Nf8 19.d5 Bd8?? 20.Ne4 Bc7 21.Nd6 Bd6 22.ed6 Kd7 23.dc6 Bc6 24.Bc6 Kc6 25.Qc2 (25.Qc2 Kd6 26.Rad1 Qd2 27.Rd2) 1–0. pcmvr (2870) – capacuba (2305), net–chess.com, 2009.

6.Be2 Nf6 7.0-0 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7).

6.Be2 Nh6 7.0-0 0-0 8.d3 Nd7 9.e4 c5 10.b5 a5 11.a4 f5 12.Nc3 Nf6 13.Ng5 Qc8 14.ef5 Nf5 15.Nge4 Nd4 16.Nf6 Rf6 17.Ne4 Ne2 18.Qe2 Rg6 19.f4 Qg4 20.Qg4 Rg4 21.fe5 Be4 22.de4 Re4 23.ed6 Bd6 24.Rac1 Bf4=+ 25.Rc2 Be3 26.Kh1 Bd4 27.Bc1 Rae8 28.g3 R8e6 29.Bf4 h6 30.Rcc1 g5 31.Bc7 Re2 32.Rcd1 Rc2 33.Rc1 Ra2 34.Rce1 Re1 35.Re1 Kf7 36.Bb6 Ra4 37.h4 Ra3 38.Kg2 a4 39.hg5 hg5 40.Bd8 Rb3 41.Re7 Kg6 42.Ra7 a3–/+ 43.Kh3 Bf2 44.Bc7=+ Kh5 45.b6 g4 46.Kg2 Bd4 47.b7 Rb2 48.Kf1 a2 49.b8Q Rb8 50.Bb8 a1Q 51.Ra1 ½–½. hal1958 – mlutu, playchess.de, 2002.

6.Be2 Nh6 7.d4 ed4 8.ed4 0-0 9.Qc2 Qd7 10.0-0 f5 11.d5 (11.Nc3 Bf6 12.Rfe1 Nf7+/-). Adam – Plaza, corr, 1970.

6.b5 Nf6 7.Be2 Be7 8.d4 Nbd7 9.de5 Ne5 10.0-0 Ng6 11.Nc3 0-0 12.Nd4 Ne4 13.Bf3 Nc3 14.Bc3 Bf3 15.Qf3 Qd7 16.Nc6 Bf6 17.Bf6 gf6 18.g3 Ne5 19.Qd5 Kg7 20.Nd4 Rfe8 21.f4 Ng4 22.Nf5 Kh8 23.Rfe1 Ne5 24.Nd6 Qd6 25.fe5 Qd5 26.cd5 Re5 27.e4 Rae8 28.Rac1 R8e7 29.Rc4 f5 30.Rc6 fe4 31.d6 cd6 32.Rd6 Rb5 33.Rd4 Ra5 34.a4 e3 35.Re2 Kg7 36.Kg2 Kf7 37.Rf4 Kg6 38.Kf3 Re8 39.Re3 Re3 40.Ke3 a6 41.h4 b5 42.ab5 ab5 43.Rb4 Ra3 44.Kf4 Ra4 45.Re4 Re4 46.Ke4 Kh5 47.Kd5 Kg4 48.Kc5 h5 49.Kb5 Kg3 50.Kc4 Kh4 51.Kd3 Kg3 52.Ke3 h4 53.Ke2 Kg2 54.Ke3 h3 55.Kf4 h2 56.Kg4 h1Q 57.Kf4 Kf2 58.Ke5 Qh4 59.Kd5 Ke3 60.Ke5 Qh5 61.Kd6 Ke4 62.Ke6 Qh6 63.Kd7 Ke5 64.Kc7 Kd5 65.Kd7 Qh7 66.Ke8 Ke6 67.Kd8 Qd7 0-1. ariel247 (2080) - sp247 (2350), Rated Classical game, lichess.org, 2016.

6.Qc2 g6 7.Be2 Bg7 8.0-0 Nf6 9.c5 a5 10.Ng5 Qd7 11.cb6 cb6 12.ba5 Ra5 13.Nc3 h6 14.Nf3 0-0 15.Qb3 Kh7 16.Qb6 Ra8 17.Nb5 Ra6 18.Qc7 Qc7 19.Nc7 Rc6 20.Ne6 Re8 21.Ng7 Kg7 22.Bb5 Rec8 23.Bc6 Rc6 24.Rab1 Ba6 25.Rfc1 Ne4 26.Rc6 Nc6 27.Rc1 Nb4 28.Rc7 Kf6 29.a3 Nd3 30.Bc3 Bb5 31.Bb4 Nb4 32.ab4 g5 33.d4 g4 34.de5 de5 35.Rb7 Nd6 36.Rb6 Ke6 37.Nh4 f4 38.ef4 ef4 39.Nf5 Kf5 40.Rd6 Bc4 41.Rh6 Ke4 42.Rh5 f3 43.gf3 gf3 44.Rh4 Kd3 45.Rc4 Kc4 46.h4 Kb4 47.h5 Kc5 48.h6 Kd6 49.h7 Ke6 50.h8Q 1-0. pieterpad (2060) - ALEKSANDR29 (2160), Rated Classical game, lichess.org, 2016.

6.d4 d5 7.a3 ed4 8.Nd4 dc4 9.Qa4 c6 +/-.

6.d4 e4 7.Nfd2 Nf6 8.Nc3 Be7 9.Qb3 0-0 10.a4 a5+= 11.ba5 Ra5 12.Nb5 (12.c5 d5=) 12...Nbd7 (12...Kh8 13.Be2=) 13.Be2 c6 (13...Rf7 14.0-0=) 14.Nc3 (14.Nd6 Bd6 15.c5 Nd5 16.cd6 Ra7+=) 14...Ra8 (14...Rf7 15.0-0=) 15.g3 (15.c5 Kh8 16.cb6 Qb6 17.Qb6 Nb6+=) 15...Kh8 16.0-0 Qe8 17.Rfb1 (17.a5 Ra6 18.c5=) 17...g5 (17...Ra5 18.Ba3=+) 18.Qc2 (18.a5!?+=) 18...Qg6 19.Kg2 d5 20.cd5 cd5 21.Nb5 (21.Ba3 Ba3 22.Ra3 f4=) 21...Rac8 (21...f4 22.Kg1=) 22.Qb3 f4 23.ef4 (better 23.Kg1!?=) 23...gf4-/+ 24.Kf1 (24.Kg1 e3 25.fe3 fg3-+) 24...fg3 (24...e3 25.Nf3 Ne4-+) 25.hg3-/+ Ng4 26.Bg4 Qg4 27.Qd1?? (27.Ba3 Qh3 28.Kg1 Ba3 29.Ra3-+) 27...Qh3-+ 28.Ke2 Qg4 (28...Rf2 29.Kf2 Qh2 30.Kf1 Rf8 31.Qf3 ef3 32.Nc3 Ba6 33.Ke1 Bg5 34.Nf1 Qc2 35.Nd5 Qe2) 29.Ke1 (29.Kf1 Qg3 30.Qe2 e3-+) 29...Qh3 30.Nf1?? (30.Ke2 Rf2 31.Kf2 Qh2 32.Kf1 Rf8 33.Qf3 ef3 34.Nc3 Ba6 35.Nc4 Bc4 36.Ke1 Qc2 37.Nd5 f2) 30...Ba6 (better 30...Bb4!? 31.Bc3 Bc3 32.Nc3 Rc3 33.Qe2-+) 31.Qe2? (better 31.Ba3 Qg2 32.Qe2 Ba3 33.Ra3=+) 31...Bb5 32.ab5 Nf6 (better 32...Bb4 33.Kd1 Qg2-+) 33.Ba3? (better 33.Bc1=+) 33...Ba3-+ 34.Ra3 Ng4 35.Ne3 Nf2 (better 35...Rf2 36.Qg4 Rf1 37.Nf1 Qg4-+) 36.Nf5?? (36.Kd2-+) 36...Rf5 37.Re3 Nd3 (37...Qh1 38.Kd2 Qb1 39.Qc4 Rc4 40.Re4 Qd3 41.Ke1 Rc1) 38.Kd2-+ (38.Kd2 Rf2 39.Qf2 Nf2 40.Rbb3-+). ClayPigeons (2210) - LumpiaShanghai (2200), Rated Bullet game, lichess.org, 2021.

6.d4 e4 7.Nfd2 Nf6 8.d5 Be7 9.b5 0-0 10.a4 (10.Nb3 a6=) 10...Nbd7 11.Nb3 Ng4 (11...Nc5 12.Nc5 dc5 13.Be2=) 12.h3 (12.Be2 Nge5+=) 12...Nge5 13.Nd4 (13.Nc3!?=) 13...Nc5=+ 14.Ba3 (14.Qd2 a6-/+) 14...Ned3-/+ 15.Bd3 Nd3 (15...ed3? 16.Bc5 dc5 17.Ne6+-) 16.Kf1 Bh4 (16...Bc8-/+) 17.g3 (17.Ne6 Qe7 18.Ra2 Rf7-/+) 17...Bf6 (17...f4 18.gh4 fe3 19.Rh2 Nf2 20.Qe2 Ng4 21.Kg1 Nh2 22.Qe3 Qh4 23.Kh2 Rf2 24.Kg1-+) 18.Ra2 (18.Ne6!? Qe7 19.Ra2-/+) 18...Bd4-+ 19.ed4 Qf6 20.Kg2 (20.Qd2 a6-+) 20...f4 21.g4 (21.Rf1 fg3 22.fg3 Qd4-+) 21...f3 22.Kf1 Qd4 23.Qc2 (23.Rc2 Qe5 24.Bc1 a6-+) 23...Rae8 Black plans e3 (23...e3 24.fe3 Qe3 25.Qd2-+) 24.Qc3 Qc3 25.Nc3 e3 26.fe3 Re3 27.Ra1 f2 (27...Rfe8 28.Kg1 Re1 29.Kh2-+) 28.Kg2 (28.Ne2 Ne5 29.Rh2 Nc4 30.Rf2 Na3 31.Rf8 Kf8-+) 28...Rff3 (better 28...Ne1 29.Rae1 fe1N 30.Re1 Re1-+) 29.Nd1 (29.Ne2 Ne5 30.Ra2 Nc4 31.Nd4 Rg3 32.Kf2 Bd5 33.Rha1 Rg2 34.Kf1 Nd2 35.Rd2 Rd2 36.Bd6 cd6 37.Rc1 Bg2 38.Kg1 Rh3 39.Rc8 Kf7 40.Rc7 Ke8 41.Rc8 Kd7 42.Rd8 Kd8 43.Ne2 Re2 44.a5 Rh1) 29...Rg3 (29...Nf4 30.Kf1 Re1) 30.Kf1 (30.Kh2 Nf4 31.Ne3 Rh3) 30…Re1 0-1. zembelek (2030) - mahyar_90 (2070), Rated Blitz game, lichess.org, 2014.

6.d4 e4 7.Nfd2 Nf6 8.Be2 Be7 9.0-0 0-0 10.Nc3 Nbd7 11.f3 d5 12.a3 c5 13.bc5 bc5 14.dc5 Bc5 15.Kf2 f4 16.Kg1 fe3 17.Nb3 ef3 18.Bf3 0–1. purplegadge (1765) – molding_eng (1810), gameknot.com, 2013.

6.d4 Nf6 7.de5 Bf3?? (better 7...de5 8.Qd8 Kd8 9.Ne5 Bb4 10.Nc3 Ke8=) 8.Qf3+- (8.gf3?! de5 9.Qd8 Kd8+=) 8...de5 9.Qa8 Nbd7 (9...Bb4 10.Bc3 a5 11.a3 Bc3 12.Nc3+-) 10.Qd8 Kd8 11.Be2 (better 11.a3 Bd6+-) 11...Bb4 12.Bc3 Bc5 13.0-0 a5 14.Nd2 h5 15.Nf3 Re8 16.Rfd1 Kc8 17.Ng5 Ne4 (17...f4 18.ef4 ef4+-) 18.Ne4 fe4 19.Bh5 Nf6 (19...Rh8 20.Bg4 Bd6 21.Rab1+-) 20.Be8 Ne8 21.Be5 Nd6 22.Bd6 cd6 23.g3 Kd7 24.Rd5 Ke6 25.a4 g6 26.Rb1 Bb4 27.Kg2 Bc5 28.h4 Bb4 29.Rb5 Bc5 30.g4 Bb4 31.Rb6 Bc5 32.R6b5 Bb4 33.Rd1 (33.R5b4 ab4 34.a5 g5 35.a6 gh4 36.a7 b3 37.a8Q Kf6 38.Qf8 Ke6 39.Rb3 h3 40.Kh3 d5 41.Qg7 dc4 42.Rb6 Kd5 43.Qd4) 33...Bc5 34.Ra5 Bb4 35.Rb5 Bc3 36.a5 Be5 37.a6 g5 (37...Kd7 38.a7 Bg7 39.Rb7 Kc6 40.a8Q d5 41.Rd5 Be5 42.Qa6) 38.hg5 Bd4 (38...Kd7 39.a7 d5 40.Rdd5 Kc7 41.a8Q Bd6 42.Rb7 Kc6 43.Qa6) 39.Rb7 (39.Rd4 Kd7 40.a7 d5 41.Rb7 Kc6 42.a8Q Kd6 43.cd5 Ke5 44.Qb8) 39...Bc5 (39...Bf6 40.gf6 Ke5 41.f7 Kf6 42.f8Q Kg5 43.Rh1 Kg4 44.Rg7) 40.a7 Ba7 (40...Be3 41.fe3 d5 42.a8Q d4 43.Rd4 Ke5 44.Re7) 41.Ra7 Ke5 (41...d5 42.c5 d4 43.Rd4 Ke5 44.Re7) 42.Ra5 (42.Re7) 42...Ke6 43.Ra6 Ke5 (43...Kd7 44.Rad6 Kc7 45.Rh6 Kb8 46.Rd7 Kc8 47.Rhh7 Kb8 48.Rd8) 44.Rd5 (44.Rh1 d5 45.g6 dc4 46.Rh5) 44...Ke6 45.Rdd6 Ke7 46.Rd5 Ke8 (46...Kf7 47.Rd7 Ke8 48.Raa7 Kf8 49.Ra8) 47.Rb5 (47.Ra7 Kf8 48.Rd8) 47...Kd7 48.Rb7 Kc8 49.Rh7 (49.Raa7 Kd8 50.Ra8) 49...Kd8 (49...Kb8 50.g6 Kc8 51.Ra8) 50.Ra8 1-0. GM_HUSARZ (2105) - FEDOR50 (2030), Rated Bullet game, lichess.org, 2015.

6.Be2 Be7 7.Qc2 Nh6 8.d4 e4 9.Nfd2 Nd7 10.0-0 0-0 11.Nc3 Kh8 12.a4 Nf6 13.a5 Rc8 14.ab6+/- ab6 15.Ra7 Bc6 16.b5 Be8 17.Rfa1 Bh5 18.Bh5+- Nh5 19.Nd5 Nf6+/- 20.Nb4 Qe8 21.Nc6+- Nd7 22.Rb7 Bg5 23.Raa7+- Qh5 24.Nf1 f4 25.ef4 Bf4 26.h3 Nf5? 27.Qe4+- Nh4 28.Nb4 Rce8 29.Qd3 Re2+/- 30.Bc3 Bh2?? 31.Nh2 Ref2 32.Ra2 Qg5 33.Rf2 Rf2 34.Kf2 Qg2 35.Ke1 Qb7 36.Nc6 Qc8 37.Qe4 Ng6 38.Ng4 Qf8 39.Ne3 Nf6 40.Qe6 Nh5 41.Qd7 (41…Qf3 42.Qd8 Nf8 43.Nd5+-) 1–0. Van Esbroeck,Dirk – Jonckjeere,P, corr Belgium, 1996.

6.Nf3 Nf6 7.d4 e4 8.Nd2 (better 8.Ng5!? d5 9.Qb3+/-) 8...Be7+= 9.Qb3 0-0 10.c5 d5 11.cb6 ab6 12.a4 c6 13.Be2 Na6 14.b5 cb5 15.Nb5 Bb4 16.Rd1 Qe7 17.0-0 Rfe8 18.Nb1 Bd6 19.Nd6 Qd6 20.Ba3 Qe6 21.Bb5 (21.Rc1!?+/-) 21...Rec8+= 22.Rc1 Nc7 23.Be2 Nce8 24.Nc3 f4? (better 24...Nc7!?+/-) 25.ef4+- e3 26.Nb5 ef2 27.Rf2 Ne4 28.Rff1 (better 28.Rc8!? Rc8 29.Rf3+/-) 28...Nd2= 29.Qb4 (29.Bg4! Qg4 30.Qb4=) 29...Qe3=+ 30.Kh1 (30.Rf2 Nf6 31.Rc3 Rc3 32.Qc3 Qf2 33.Kf2 Nfe4 34.Ke3 Nc3 35.Nc3 Nc4 36.Bc4 Re8 37.Kf3 dc4 38.d5 Re1-/+) 30...Nf6-/+ 31.Rc8?? (better 31.Bf3 Nf1 32.Rf1-/+) 31...Rc8-+ 32.Re1 (32.Qe7 Qe7 33.Be7 Nf1 34.Bf1-+) 32...Nfe4 33.Nd6 (33.h3 Ng3 34.Kh2 Ne2 35.Re2 Qe2 36.Nc7 Nf1 37.Kg1-+) 33...Nf2 34.Kg1 Nh3 35.Kh1 Nf2 (35...Qg1 36.Rg1 Nf2) 36.Kg1 Nd3 (36...Rc1 37.g3 Qe2 38.Qd2 Nh3 39.Kh1 Re1 40.Qe1 Qf3) 37.Kh1 Nb4 (37...Rc1! 38.g4 Re1 39.Bf1 Rf1 40.Kg2 Nf4) 38.Bb4 Qe2! 39.Rg1 (39.Re2 Rc1 Mate attack) 39...Rb8 z (39...Nf3 40.Nf5 Ng1 41.Ng3 Rc1 42.f5 Nf3 43.Be1 Re1 44.Nf1 Rf1) 40.h3 Ne4 41.Nf5 g6 42.Ne7 Kf7 43.Nc6 Bc6 44.Re1 Qd3 (44...Qb2 45.Be7 Ke7 46.Rg1 Ba4 47.f5 gf5 48.Rf1 Ng3 49.Kg1 Qd4 50.Kh2 Nf1 51.Kh1 Ng3 52.Kh2 Ne2 53.g3 Qg1) 45.a5 Qd4 46.Ba3 ba5 (46...Qf2 47.Re3 ba5 48.Bc1 Rb1 49.Rc3 Nc3 50.f5 Rc1 51.Kh2 gf5 52.h4 Qh4) 47.Kh2 Qc3 48.Rc1 (48.Re4 de4 49.Bc5 Qc5 50.Kg3 Rb3 51.Kh2 Qf2 52.Kh1 Rh3 53.gh3 e3) 48...Qa3 49.Rc6 (49.f5 Qc1 50.fg6 Kg7 51.gh7 Qf4 52.g3 Qg3 53.Kh1 Rb1) 49...Qb2 (49...Qg3 50.Kg1 Rb1 51.Rc1 Rc1) 50.Rc7 Kf6 51.Rc6 Kg7 52.Rc7 (52.Kh1 Qa3 53.Rc7 Kh6 54.Rc1 Qc1 55.Kh2 Rb1 56.f5 Qg1) 52...Kh6 53.Rh7 (53.Rh7 Kh7 54.h4 Qf2 55.f5 Qh4 56.Kg1 Rb1; 53.Rc5 Qf2 54.Rc1 Qf4 55.Kg1 Qc1 56.Kh2 Rb1 57.g3 Qc2) 1-0. Butterbrot (2105) - pdragan54 (2150), Rated Blitz game, lichess.org, 2015.

6.Qb3 Nbd7 7.d4 Be7 (7...ed4 8.Bd4 c5 9.Bb2=) 8.d5 (8.de5 de5 9.Ne5 a5 10.ba5 Ne5 11.Be5 Ra5+=) 8...0-0 9.Nbd2 c6 10.dc6 Bc6 11.Rd1 d5 (better 11...Qc7!?=) 12.Ne5+/- Ne5 13.Be5 Bd6 (13...dc4 14.Nc4 Bd5 15.b5+/-) 14.Bd6 (better 14.Bf6!? Qf6 15.cd5+-) 14...Qd6+/- 15.Nf3 (15.Be2 dc4 16.Nc4 Qe7+/-) 15...Rad8 (15...Rfd8 16.Qa3+/-) 16.Be2 Qc7 17.cd5 (17.Nd4 Bb7+/-) 17...Bb7 (17...Bd5 18.Qb2+=) 18.0-0 Bd5 19.Qb1 Bb7 20.Qb2 Rd1 21.Rd1 Rd8 (21...Ng4 22.Rc1 Qb8 23.g3+/-) 22.Nd4 Bd5 23.Qb1 Ne4 (23...a5 24.ba5 ba5 25.a3+/-) 24.f3 (24.Bd3!? Qb7 25.Ne2+/-) 24...Nc3+= 25.Qd3?? (better 25.Rc1 Ne2 26.Ne2+=) 25...Nd1-/+ 26.Bd1 Qc4 (better 26...Ba2 27.Bc2 g6-+) 27.Qf5?? (better 27.Qc4 Bc4 28.a4=+) 27...Be6 (better 27...Qc1 28.Qc2 Qe3 29.Qf2-+) 28.Qg5?? (better 28.Qb1-+) 28...Qd5 (better 28...Rd4 29.ed4 Qd4 30.Kf1 Qd1 31.Kf2 Qd4 32.Kg3 Qb4 33.Qd8 Qf8-+) 29.Kf2?? (better 29.Qd5 Bd5 30.a4=+) 29...Qg5-+ 30.g3 Qe7 (30...Rd4 31.ed4 Qd2 32.Be2 Bc4 33.h4 Qe2 34.Kg1 Qf3 35.Kh2 Bf1 36.b5 Qg2) 31.Be2 Qb4 32.Nc6 Qd2 33.g4 Rc8 (better 33...Rd3 34.Ne7 Kf8-+) 34.Ne5 Rc2 35.f4 (35.Kg3 g5 36.Ng6 Qe2 37.Ne7 Kf8 38.Ng6 hg6 39.h4 Qg2) 35...Qe2 36.Kg3 Qh2 37.Kf3 Bd5 (37...Qg2) 38.e4 Be4! 39.Ke4 Qg2 40.Kf5 (40.Kd3 Qe2 41.Kd4 Rd2 42.Kc3 Qe3 43.Kb4 Qc5 44.Kb3 a5 45.Nc6 Qd5 46.Kc3 Qd3) 40...Re2 41.Nf7 (41.a4 Qe4 42.Kg5 Rh2 43.Nf7 Qg6) 41...g6 (41...Qe4 42.Kg5 Qe7 43.Kf5 Qf6) 42.Kf6 (42.Kg5 Kf7 43.f5 gf5 44.Kf5 h6 45.g5 Qg5) 42...Qc6 43.Kg5 Re7 (43...Qc5 44.Ne5 Qe7 45.Kh6 Qh4) 44.Ne5 (44.f5 Qc1 45.Kh4 Qe1 46.Kg5 Kf7 47.fg6 hg6 48.a4 Re5 49.Kf4 Qe3) 44...Qf6! 45.Kf6 Re5 (45...Re5 46.fe5 Kf8=+) 0-1. ClayPigeons (2165) - karzeva (2130), Rated Bullet game, lichess.org, 2021.

6.b5 Be7 7.d4 ed4 8.Nd4 Be4 9.Nc3+= Bb7 (9...Bg6 10.Be2 a6 11.f4 ab5 12.Bf3+-) 10.a4 (10.Nd5!?+-) 10...0-0= 11.Qc2 (11.Nf5 a6+=) 11...Nbd7 (11...a6 12.Nf5=) 12.f3 (12.Nf5=) 12...d5 (12...a6 13.Be2=) 13.Be2 (13.Nc6 Bc6 14.bc6 d4 15.ed4 Nb8+=) 13...dc4+= 14.Bc4 Ne5 15.Be2 Rc8 (15...c5 16.Nf5+=) 16.Rd1 Qe8 17.0-0 Bc5 (17...c6 18.Qf5 Bb4 19.Qg5+=) 18.Bc1 (18.Rd2 c6+=) 18...Bd4 (18...c6 19.Bd2=) 19.Rd4 (19.ed4 Ng6+-) 19...c6 (19...c5 20.Rd2+=) 20.Rfd1 c5 (20...Qe7 21.e4+=) 21.Rd6+- Ng6 (21...Qe7 22.Qf5+-) 22.Bc4 (22.e4!?+-) 22...Ne5+= 23.Be2 Qe7 (better 23...Ng6!?=) 24.Qf5+- Ng6 (better 24...Rc7+-) 25.Rd7?? (better 25.e4 Rcd8 26.e5+-) 25...Qd7?? (better 25...Nd7 26.Rd7 Qh4–/+) 26.Rd7+- Nd7 27.Qd7 Rb8 28.e4 Rfd8 29.Qc7 Nf8 (29...Rdc8 30.Qg3+-) 30.Bf4 (30.Bc4 Kh8 31.Qf7 Ng6+-) 30...Ne6 (30...Rdc8 31.Qb8 Rb8 32.Bb8+-) 31.Qb8 Rb8 32.Bb8 Nd4 (32...Nf8 33.Ba7 Nd7 34.Bc4+-) 33.Ba7 Ne2 34.Ne2 f5 (34...c4 35.Bb6 g5 36.Kf2+-) 35.Nc3 (35.ef5 c4+-) 35...fe4 (35...c4 36.Bb6 fe4 37.fe4+-) 36.fe4 Kf7 37.Bb6 c4 38.Kf2 Ke6 (38...Bc8 39.Ke3+-) 39.Ke3 g5 40.a5 1–0. jaddwarrior (2165) – freethinker 67 (1755), ChessWorld.net, 2012.

6.Nc3 a6 7.a4 Be7 8.Be2 0-0 9.Qb3 c6 10.Rd1 Qc7 11.d4 e4 12.Nd2 d5 13.Rc1 Qd6 14.Ba3 Qd7 15.b5 ab5 16.cb5 c5 17.dc5 bc5 18.Nd1 c4 19.Qb2 Ra4 20.Be7 Qe7 21.Nc3 Rb4 22.Qa3 Re8 23.0-0 Qc5 24.Rb1 d4 25.Rb4 dc3 26.Qc3 Nd5 27.Rc4 Nc3 28.Rc5 Ne2 29.Kh1 Nd7 30.Rc7 Ne5 31.Rb7 Nd3 32.Ne4 f5 33.Nd6 Rf8 34.f3 f4 35.e4 Nc3 36.Rc7 Rd8 37.Rc3 Rd6 38.b6 Nb4 39.b7 Rb6 40.Rc8 1-0. zembelek (2225) - wazabanja (1775), Rated Classical tournament, lichess.org, 2016.

6.Nc3 Nbd7 7.d4 e4 8.Nd2 Qe7 9.Qc2 Can e4 get defended? 0-0-0 (9...c6!?+=) 10.d5 Re8 11.g3 Rg8 (11...Kb8 12.Bg2+/-) 12.Bg2 g5 13.Nce4 Ne4 (13...Ng4 14.Nc3+-) 14.Be4 (worse 14.Ne4 f5 15.Nc3 f4+/-) 14...Bg7 15.Bh7 Bb2 16.Qb2 Rh8 17.Be4 Kb8 18.Bg2 Ne5 19.Ne4?? (better 19.Qc3+-) 19...Nd3-+ 20.Kd2 (20.Ke2 Nb2 21.Rac1 b5-+) 20...Nb2 21.Kc3 (21.Rac1 b5! 22.Nc3 Nc4 23.Kd3 Qf6-+) 21...Qe5 22.Kb3 Nc4! 23.Kc4 (23.Kc4 Bd5 Deflection) 23...Bd5 24.Kd3 Be4 25.Be4 Qe4 26.Kd2 Re5 (better 26...Qb4 27.Ke2 Qb2 28.Kf3 g4 29.Kg2 Re3-+) 27.Rhd1 Rd5 (27...Rh2 28.Kc1 Qc4 29.Kb1 Qb4 30.Kc2 Rf2 31.Rd2 Rd2 32.Kc1 Qb2) 28.Ke2 Qc4 (28...Qc2 29.Kf3 Rf5 30.Kg4 Qe2 31.Kf5 Qf3 32.Kg5 Rh5) 29.Kf3 (29.Rd3 Qc2 30.Kf3 Rf5 31.Ke4 Qc6 32.Kd4 Re8 33.Rc1 Rd5) 29...g4 (29...Rf5 30.Kg2 Qe4 31.Kg1 Rf2 32.Kf2 Rh2 33.Ke1 Qh1) 30.Kg2 Qe4 31.Kg1 Rd1 (31...Rh2! 32.f3 Qe3 33.Kh2 Qf2 34.Kh1 Rh5) 32.Rd1-+ Qh7 33.Rd4 Qh2 34.Kf1 Qh1 35.Ke2 Qf3 36.Kd3 Rh1 37.Rf4 (37.Kc3 Rc1 38.Kb3 Qf2 39.Rd6 Qe3 40.Ka4 cd6 41.a3 d5 42.Kb5 Qe8 43.Ka6 Qa4) 37...Rd1 38.Kc3 Qc6 39.Kb3 (39.Rc4 Rc1 40.Kb3 Qc4 41.Ka3 b5 42.f3 Qc3) 39...Rb1 40.Ka3 Qc1 (40...b5 41.Rf7 Qc3) 41.Ka4 Qc2 42.Ka3 Qb2 (42...Qd3 43.Ka4 Qa6) 43.Ka4 c6 44.a3 (44.Rf7 Qb4) 44…Qb3 (44...Qc2) 0-1. zembelek (2130) - firedark (2025), Rated Blitz game, lichess.org, 2014.

6.Nc3 Be7 7.d4 ed4 8.ed4 0-0 9.Be2 Re8 (9...d5 10.a3=) 10.0-0 Bf8 (10...d5 11.Qb3=) 11.Qc2 (11.d5 Be7+=) 11...g6 (11...d5 12.c5+=) 12.d5+= Bg7 13.Nb5 (13.a3 c6+=) 13...a6 14.Nbd4 c5 15.bc5 bc5 (15...dc5 16.Nb3=) 16.Nb3+= Bc8 17.h3 (17.Rfe1 Ra7+=) 17...Bf5 18.Bd3 Bd3 19.Qd3 a5 20.a4 (20.Rae1 Na6+=) 20...Na6= 21.Bc3 Rb8? (better 21...Nb4 22.Qd1 Ne4 23.Bg7 Kg7=) 22.Na5+- Nb4? (better 22...Qd7!?+-) 23.Bb4 Rb4 24.Nc6 Qb6 (24...Qa8 25.Nb4 cb4 26.Rab1+-) 25.Nb4 cb4 26.a5 Qa6 27.Ra4 Nd7 28.Rb4 Qa5 29.Rb5 Qa7 30.Qb1 Nc5 31.Re1 Ra8 32.Nd4?? (better 32.Rb6 Nd3 33.Re3+- (33.Qd3?! Qb6 34.Qe4 Qb4+/-)) 32...Bd4=+ 33.Re2 Na4 (better 33...Be5-/+) 34.Rb7 Qc5 35.Qd3?? (better 35.Ra2 Qc4 36.Rb4+=) 35...Nc3 (35...Nb6 36.Qf3 f5 37.Qf4+=) 36.Rc2 (36.Reb2 Ra1 37.Kh2 Be5 38.g3 Ra3=+) 36...Ra1 37.Kh2 Be5 38.g3 Nd1 (38...Ra3 39.f4 Bf6 40.f5-/+) 39.Qf3 f5 40.h4 (40.Rb8!? Kg7 41.Rb5=+) 40...Nc3 41.Kg2? (better 41.Rb8 Kg7 42.Rb7 Kf6 43.Qd3-+) 41...Ne4?? (41...Qc4 42.Rd7 Qf1 43.Kh2 Ra4 44.Rd8 Kg7 45.Rd7 Kh6 46.Qe3 f4-+) 42.h5 (42.Rb8!? Kf7 43.Rb7 Ke8 44.Qb3= (44.Rh7?? Qb6 45.Qe3 Qb1-+)) 42...Ra3-/+ 43.Qe2? (43.Rb3 Ra8 44.hg6 hg6 45.Qe3 Qe3 46.Re3=+ (46.fe3? Bg3 47.Rb7 Be5-+)) 43...Ng3-+ 44.fg3 (44.Rb8 Kg7 45.h6 Kh6 46.Qd2 (46.fg3?? Rg3 47.Kh1 Rg1) 46...f4 47.Qc1-+) 44...Rg3 45.Kh2 (45.Kh1 Rg1) 45…Qg1 0-1. zembelek1 (2165) - Igor76 (2080), Rated Classical tournament, lichess.org, 2016.

6.d3 Be7 7.Be2 Nbd7 8.Nc3 0-0 9.0-0 Re8 10.Qb3 Rb8 11.a4 a5 12.Ba3 (12.b5!?=) 12...ab4=+ 13.Bb4 Nc5 (13...e4 14.de4 Ne4 15.Ne4 Be4 16.Bd3 Bf3 17.gf3=+) 14.Qc2 (14.Bc5 dc5 15.Ne5 Bd6+=) 14...d5 (14...e4 15.de4 Nfe4 16.Bc5 Nc5 17.a5=+) 15.cd5 Nd5 16.Nd5 Qd5 17.Rfc1? (17.Rfb1 e4 18.de4 Qe4=) 17...Nd3?? (better 17...Nb3 18.Bc3 Bd6-+) 18.Qd3 Bb4 19.Rc7 Qd3 20.Bd3 e4 21.Bb5 Re7 (21...Re7 22.Re7 Be7=) 0-1. moss42 (1880) - doyabestson (2585), ChessWorld.net, 2013.

6.d4 ed4 7.ed4 Be4? 8.Bd3 (8.Nc3 Bb7+/-) 8...Bd3 (8...d5 9.b5+=) 9.Qd3+/- Be7 10.0-0 0-0 11.Re1 Re8 12.Nbd2 (12.Nc3 Nbd7+/-) 12...Nbd7 13.Re2 Bf8 (13...d5 14.Bc3+=) 14.Rae1 (14.Re8!? Qe8 15.Re1+/-) 14...Re2+= 15.Re2 h6 (15...d5 16.Bc3+=) 16.d5 Nh7 (16...a5 17.b5+/-) 17.Ne4 (17.Nd4 Ne5 18.Qb1 Qh4+/-) 17...Ndf6 (17...a5 18.b5+/-) 18.Ng3 (18.Nf6 Nf6 19.Nd4 Nh5+-) 18...Qd7 19.Nh4 (19.Nd4 a5 20.Qa3 Qc8+/-) 19...Re8+/- 20.Re8 Qe8 21.h3 (better 21.Nf3+/-) 21...Ng5?? (better 21...Qe1!? 22.Nf1 Qb4-/+) 22.Nhf5 (better 22.Bf6!? Qe1 23.Kh2 gf6 24.f4+-) 22...Qe1+/- 23.Kh2 (23.Qf1 Qf1 24.Kf1 Nfe4+=) 23...Qf2? (23...Ngh7 24.Qc2 Qb4 25.Nd4=) 24.Bd4 (24.Bf6 gf6 25.h4 Nh7+-) 24...Qe1 (24...Qa2!? 25.Bf6 gf6+=) 25.Nh6+/- gh6 26.Bf6 Bg7 (26...Qb4? 27.Bc3 Qc5 28.Nh5+-) 27.Bg7 Kg7 28.Nf5 Kf8 29.Nh6 Qe5 30.Qg3 Qg3 31.Kg3 Ne4 32.Kf4 Nd2 33.g4 (33.h4 Nc4 34.Nf5 Ne5+/-) 33...Nc4 34.g5 (34.Ke4!?+/-) 34...Ne5 35.h4 (35.Kf5 Nd3 36.a3 Ne5+=) 35...Nd3 36.Kf5? (better 36.Ke4 Nb4 37.a3=) 36...Nb4-/+ 37.h5 White prepares the advance g6 37...Nd5 (better 37...Na2 38.Ng4 Nb4-+) 38.g6?? (better 38.Ng4-/+) 38...fg6 (38...Ne7 39.Kg5 fg6 40.hg6-+) 39.hg6 (39.Kg6 Ne7 40.Kg5 c5-+) 39...Kg7 40.Kg5 (40.Ng4 c5-+) 40...Ne7 41.Nf5 (41.Nf7 Ng6 42.Nd8-+) 41...Nf5 42.Kf5 (42.Kf4 c5-+) 42...c6 43.a3 d5 44.a4 c5 45.Ke5 d4 46.Kd6 d3 47.Kc6 d2 48.Kb7 d1Q 49.Ka7 (49.Kc6 Qa4 50.Kd6 Qd4 51.Kc7 c4 52.Kb8 Qd7 53.Ka8 c3 54.Kb8 c2 55.Ka8 c1Q 56.Kb8 Qcc8) 49...Qa4 50.Kb6 (50.Kb7 c4 51.Kc7 c3 52.Kd6 c2 53.Ke6 c1Q 54.Kf5 Qc5 55.Ke6 Qg4) 50...c4 51.Kc5 (51.Kc7 c3 52.Kd6 c2 53.Kd5 c1Q 54.Ke5 Qc5 55.Ke6 Qg4) 51...c3 52.Kd5 (52.Kb6 c2 53.Kb7 c1Q 54.Kb8 Qc5 55.Kb7 Qaa7) 52...c2 53.Ke5 (53.Ke6 c1Q 54.Kf5 Qc5 55.Ke6 Qg4) 53...c1R (53...c1Q 54.Kd5 Qc7 55.Ke6 Qe4) 54.Kf5 (54.Kd5 Kf6 55.g7 Qc4 56.Kd6 Rd1) 54...Rc5 (54...Re1 55.Kg5 Re5) 55.Ke6 Qa6 (55...Qd4 56.Ke7 Re5) 56.Kd7 Rb5 57.Kc7 (57.Ke7 Rd5 58.Ke8 Qe2) 57...Rb7 58.Kc8 (58.Kd8 Qa8) 58…Qa8 0-1. Bendega (2010) - CX66 (2060), lichess.org, 2020.

6.d4 ed4 7.Bd4 Be7 8.Nbd2 0-0 9.Qc2 Nc6 10.Bc3 d5 (10...Ne5 11.Ne5 de5 12.Rd1=) 11.b5+= Nb4 (11...Nb8 12.Bd3+=) 12.Qb3 (better 12.Qb2!? a5 13.a3+-) 12...c5 13.bc6 Nc6 14.cd5 (14.Rd1 Rc8=) 14...Na5 (better 14...Nd5!? 15.Bb2 Na5=+) 15.Ba5+= Bd5 16.Bb6 ab6 17.Bc4 Bb7 18.0-0 Ra3 19.Qc2 Qa8 20.Bb3 (20.Rab1 Bc5+/-) 20...Rc8 (20...Bb4 21.Nh4=) 21.Qf5 Ra5 22.Qh3 Rh5 23.Qg3 Qa3? (23...Rd8 24.Nc4 Bf3 25.gf3+=) 24.Nc4 (24.Ne5!? Rf8 25.Nf7 Nd5+-) 24...Qb4 25.Rac1 (25.Nfe5 Rh6+/-) 25...Ne4 (25...Bf3 26.Qf3 (worse 26.gf3 Rhc5-/+) 26...Rhc5 27.Qb7=) 26.Qg4 (26.Qf4!? Nc5 27.Nb6 Qf4 28.ef4+-) 26...Nf6+= 27.Qd4 The isolani on b6 becomes a target 27...Bf3? (27...Rhc5 28.Nfe5 Rd5 29.Qf4+/-) 28.gf3?? (28.Nd6 Rc1 29.Qb4+-) 28...Rg5 29.Kh1 Bc5? (better 29...Rgc5!? 30.Qd3 R5c6+=) 30.Qf4 Rg6 (30...h6 31.Ne5 Rf8 32.Nf7 Rf7 33.Qb8 Bf8 34.Rc7+- (34.Bf7?! Kf7 35.Rb1 Qc4=)) 31.Ne5 (31.Qf5 Rf8 32.Ne5 Rh6 33.Nf7 Rh5 34.Qf6 gf6 35.Rg1 Rg5 36.Ng5 Kh8 37.Nf7 Rf7 38.Bf7 h5+-) 31...Qf4 32.Bf7 (32.ef4!? Kf8 33.Rfe1+-) 32...Kf8+/- 33.ef4 Rh6 34.Rfd1 Bf2?? (better 34...Rh4+/-) 35.Rc8 Ke7 36.Kg2 (36.Rc7 Nd7 37.Rdd7 Kf6 38.Ng4 Kf5 39.Rc4 Rh2 40.Kh2 Bd4 41.Rcd4 g6 42.R7d5) 36...Bc5+- 37.Rc5 (37.Rc7 Nd7 38.Rdd7 Kf6 39.Ng4 Kf5 40.Kg3 Rh3 41.Kh3 Bf2 42.Rc4 Bd4 43.Rcd4 b5 44.R7d5) 37...bc5 38.Bb3 (38.Bb3 Nh5 39.Rd7 Kf8 40.Rf7 Ke8 41.Rf5+-) 1-0. zembelek (2100) - taarn (2010), Rated Blitz game, lichess.org, 2014.

6.d4 Nbd7 7.Nbd2 e4 8.Ng5 h6 9.Nh3 Be7 10.Qc2 d5 11.cd5 Bd5 12.Bc4 Bb7 13.b5 0-0 14.a4 Rc8 15.Qb3 c6 16.Nf4 cb5 17.ab5 Ra8 18.Ng6 Ng4 19.Nf8 Qf8 20.h3 Ngf6 21.0-0 Ne8 22.Bd5 Nd6 23.Bb7 Nb7 24.Ba3 Na5 25.Be7 Qe7 26.Qd5 Re8 27.Nc4 Nf6 28.Qe5 Nc4 29.Qe7 Re7 30.Rfc1 Na5 31.Rc8 Kh7 32.g4 Nd5 33.Kg2 Nb4 34.Rac1 Nd3 35.R1c7 Rc7 36.Rc7 Ne1 37.Kf1 Nf3 38.Rf7 Nc4 39.Ra7 Ncd2 40.Ke2 Nc4 41.Rc7 Nd6 42.Rc6 Nf7 43.Rb6 N7g5 44.Rb7 Nh3 45.Re7 Nhg1 46.Kf1 Nh3 47.b6 Nd2 48.Kg2 Ng5 49.b7 Ngf3 50.b8Q Ne1 51.Kg3 Nf1 52.Kf4 Ng2 53.Ke4 Nd2 54.Kd5 1-0. zembelek (2070) - bobyrizov (2000), Rated Blitz game, lichess.org, 2014.

6.Be2 Be7 7.0-0 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7).

5.b5 a6= 6.a4 g6 7.Be2 Bg7 8.d3 Nf6 9.Nf3 0-0 10.0-0 Ng4 11.Nbd2 Re8 12.e4 Nd7 13.h3 Ndf6?? 14.Nh2?? Nh2= 15.Kh2 Bb7 16.Bf3 d5 17.ed5 Re7 18.Ne4 Rd7 19.Be5 ab5 20.ab5?? Bd5?? 21.Nf6 Bf6 22.Bf6 Qf6 23.Bd5 Ra1 24.Qa1 Qf4 25.g3 Qd2 26.Qd1 Qb4 27.Qc2 Re7 28.Rb1 Qa5 29.Qb2 Re1 30.Re1 Qe1 31.Kg2 (31.Kg2 Qe7 32.Qa1+-) 1–0. valpa – Excessive_Force, playchess.de, 2002.

5.b5 Bb7 6.a4 a6 7.Nc3 Nf6 8.d3 d5 9.cd5 Nd5 10.Nd5 Qd5 11.e4 Qd6 12.Nf3 Nd7 13.Nd2 Be7 14.Nc4 Qc7 15.Be2 0-0 16.Bg4 f6?? 17.Bd7+- Qd7 18.Nb6 Qd6 19.Na8 Ra8 20.Qb3 Kh8 21.0-0 ab5 22.ab5 Rd8 23.Rfd1 Qb6 24.Bc3 Qd6 25.Be1 Rb8 26.b6 Bc8 27.Ra7 Bb7 28.Rda1 h6 29.f3 Bd8 30.Rb1 g6? 31.Qf7 Qd3 32.Qf8 Kh7 33.Rba1 Bb6 34.Qb8 Ba7 35.Qb7 Kg8 36.Qc8 (36.Qc8 Qd8 37.Qd8 Kf7 38.Ra7 Ke6 39.Qd5#) 1–0. Kleinke,Uwe – Barz,M, Schwerin GER, 1979.

5.b5 Bb7 6.Nf3 Nf6 7.Be2 Be7 8.0-0 Nbd7 9.d4 Qc7 10.d5 h6 11.a4 Nh7 12.Nbd2 Ndf6 13.a5 0-0 14.a6 Bc8 15.Bd3 Bg4 16.Qc2 Rae8 17.e4 Nh5 18.h3 Bd7 19.Rfe1 Qc8 20.Bf1 Nf4 21.Nh2 f5 22.Ra3 Kh8 23.Ree3 g5 24.Qd1 Nf6= 25.f3 Rf7 26.Be2 Rg8 27.Ndf1 Rfg7 28.Kf2 0–1. Costin,Tudor – Germer,Marcel (1800), Baden–ch U20, 2003.

5.b5 Bb7 6.Nf3 Nf6 7.Be2 Be7 8.d3 0-0 9.Nbd2 e4 (9...a6!?=) 10.Ne4 Ne4 11.de4 Be4 12.Bd3 (12.Nd2 d5+=) 12...Bd3 13.Qd3 Nd7 14.0-0 Nf6 (14...Bf6!? 15.Bf6 Qf6+=) 15.Rad1 Qd7 16.Bf6 Bf6 17.Qd6 Qd6 18.Rd6 Rad8 19.Rfd1 Rd6 20.Rd6 Rd8 (20...h6 21.Kf1+/-) 21.Rd8+- Bd8 22.Kf1 (22.Ne5!? f5+-) 22...f6 23.Ke2 Kf7 24.Kd3 Ke6 25.Ke4 f5 26.Kd3 h6 27.h4 g5 28.hg5 hg5 29.g3 g4 30.Ne1 Bf6 31.Ng2 Bg5? 32.e4+- Ke5 33.ef5 Kf5 34.Ne3 Ke5 35.Ng4 Kf5 36.Ne3 Ke5 37.f3 Ke6 38.f4 Bf6 39.Ke4 Bd4 40.Nc2 Bf2 41.g4 Bg1 42.Ne3 Bh2 43.g5 Kf7 44.f5 Bg1 45.Nd5 Bd4 46.g6 Kg7 47.Kf4 Bb2 48.Ne7 Bc1 49.Ke5 Bb2 50.Ke6 Bf6 51.Nc8 Bd4 52.Na7 Kh6 53.Nc8 Kg5 54.Nb6 Kf4 55.Nd7 Ke3 56.a4 Kd3 57.Kd5 Be3 58.a5 Kc3 59.a6 Kb4 60.a7 Kc3 61.a8Q (61.a8Q Bd4 62.b6+-) 1–0. Fournier,Frederic – texte, Active, 2007.

5.b5 d5? 6.Be5 dc4? (better 6...Nd7 7.Bb2 Ngf6+-) 7.Bc4 (7.Qf3!? Nd7 8.Bg3 Rb8 9.Bb8 Nb8 10.Bc4 Nf6+-) 7...Bb7 8.Nf3 Bd6?? (8...Nh6 9.Qb3 Nd7+-) 9.Bg7 Bf3 (9...Nd7 10.Bh8 Qe7+-) 10.Qf3 Qd7 11.Bh8 Qe7 12.Nc3 f6 13.Qh5 Kd8 14.Nd5 (better 14.Qd5 f5 15.Qg8 Qf8 16.Bf6 Kc7 17.Qh7 Nd7+-) 14...Qe4 15.Bb3 (better 15.Qf7 Qg6 16.Qb7 h5+-) 15...Qg2 (15...c4 16.Bd1 Nd7 17.Nc3+-) 16.Rf1 (better 16.Ke2 Qg6 17.Qf3 Nd7+-) 16...Nd7 17.Qh7 Be5 18.Bg7 Nb8 19.Qg8 Kd7 20.Nf6 Bf6 21.Be6 Kd6 22.Bf8 Be7 23.Be7 Ke7 24.Qg2 Nd7 25.Qg6 (25.Bd7 a5 26.Qg7 Kd6 27.Rg1 Rh8 28.Rg6 Kc7 29.Bf5 Kb8 30.Rb6 Ka8 31.Be4) 25...Rf8 (25...Ne5 26.Qf5 Nf3 27.Qf3 Rf8 28.Qe4 Kd6 29.Bg4 Rf5 30.Qf5 Ke7 31.Rc1 Ke8 32.Rc4 Ke7 33.Re4 Kd6 34.Qd7) 26.Bb3 (26.Bd7 Kd7 27.Qc6 Ke7 28.Rg1 Rf5 29.Rg6 Rg5 30.Qe6 Kd8 31.Rg5 Kc7 32.Rg8 c4 33.Qe7) 26...Ne5 27.Qe6 Kd8 28.Qd6 Ke8 (28...Kc8 29.Be6 Kb7 30.Qf8 Nd3 31.Ke2 Nc1 32.Kf3 a6 33.Qc8 Ka7 34.ba6 Na2 35.Qb7) 29.Qe5 Kd8 (29...Kd7 30.Be6 Ke8 31.Bg4 Kf7 32.Bh5 Kg8 33.Rg1 Kh7 34.Qg7) 30.Qd6 Ke8 (30...Kc8 31.Be6 Kb7 32.Qd7 Kb8 33.Bd5 Rf2 34.Qb7) 31.Be6 Rh8 (31...Rf7 32.Rg1 Rg7 33.Rg7 c4 34.Qe7) 32.Qd7 Kf8 33.Qf7 1–0. Bushkova,Vera – Luchkova,Ekaterina, Ivanovo Championship Open, 2010.

5.d3 cb4 6.Qa4 Bd7 7.Qb4 Nf6 8.Nd2 Nc6 9.Qb3 Be7 10.Ngf3 0-0 11.Be2 Rb8 12.0-0 b5 13.c5 a5 14.cd6 Bd6 15.a3 Re8 16.Ng5 Re7 17.Nge4 Ne4 18.Ne4 Be6 19.Qd1 Bc7 20.Rc1 Bd5 21.Ng3 g6?? 22.e4+- Be4 23.de4 Nd4 24.Bd4 ed4 25.Qd3 Qd6 26.f4 Qa6 27.a4 Qf6 28.e5 Qb6 1–0. Brzoza,Miroslaw – Polinska,A, corr Poland, 1979.

5.Qf3 d5 6.cd5 Bb7 7.Bb5 Nd7 8.bc5 bc5 9.Be5 Ngf6 10.Nc3 a6 11.Ba4 Qb6 12.Rb1 Bd5 13.Rb6 Bf3 14.Nf3 Be7 15.Rb7 Rd8 16.Bf6 Bf6 17.Ke2 Ke7 18.Ne4 Rhe8 19.Nc5 Kd6 20.Nd7 Re4 21.d4 Re7 22.Rb6 Kc7 23.Rc1# 1–0. marekt – hikhik, internet, 2008.

5.Qf3 d5 6.cd5 Bb7 7.Bb5+- Nd7 8.bc5 Bc5 9.Be5 Ngf6 10.Bf6 Qf6 11.Qf6 gf6 12.Nc3 0-0-0 13.Rb1 a6 14.Bd7 Rd7 15.d4 Be7 16.Rb6 Bd8 17.Rb3 Bd5 18.Nd5 Rd5 19.Nf3 Ba5 20.Ke2 h6 21.Rc1 Bc7 22.Rb6 Kd8 23.Rf6 Ke7 24.Ra6 (24.Ra6 Bb8 25.Rb1+-) 1–0. Schirmer,Michael (2140) – Rueschenbeck,Thorsten (1730), DESC, 2002.

5.d4 ed4 6.ed4 Ngf6 7.d5 Be7 8.Nf3 0-0 9.Bd3 Re8 10.0-0+= Nf8 11.Nd4 Bd7 12.h3 Qc8 13.Qf3 Ng6 14.Bg6 hg6 15.Nd2 Nh7 16.Ne4 f5 17.Nd2 Bf6 18.Rad1 Be5 19.Qd3 Ng5 20.f4+- Bd4 21.Qd4 Re5 22.fe5 Qf8 23.e6 Ne6 24.de6 (24…Be6 25.Rde1+-) 1–0. Deutekom,A – De Ron,Paul, Haarlem op, 1995.

5.d4 Ngf6 6.Nc3 =.

5.Qf3 Rb8 6.Ne2 Bb7 7.e4 Ngf6 8.Nbc3 Be7 9.Ng3 0-0 10.Bd3 a5 11.b5 Nc5 12.Bc2 c6 13.a4 Qc7 14.0-0 Rfd8 15.Ba3 Ne6 16.Nf5= Bf8 17.d3 Nd4 18.Nd4+/- ed4 19.bc6 dc3 20.cb7 Rb7 21.Rab1 Qc6 22.Qe2 g6 23.Rb5 Bg7 24.f3 Nd7 25.Qf2 Nc5 26.Bc1 Na6 27.Be3 Nb4 28.Rb1 Rdb8 29.Kf1 Bf6 30.Ke1 Qc7 31.g3 Qd8 32.Kd1 Kg7 33.Rb3 Qc7 34.Bd4 Qd8 35.Rc3 Nc6 36.Bf6 Qf6 37.Ra3 Nd4 38.Rd5 Qf3 39.Qf3 Nf3 40.d4 Nh2 41.Rd6 Ng4 42.Rb3 Nf6 43.e5 Nd7? 44.Be4+- Rc7 45.Bc6 Rd8 46.d5 Kf8 47.Kd2 Ke7 48.Rd7 Rdd7 49.Bd7 Kd7 50.Kd3 Rb7 51.c5! Kc7 52.Kc4 bc5 53.d6 Kc6 54.Rb5 Ra7 55.Rc5 Kd7 56.Kb5 h5? 57.Kb6 Ra8 58.Kb7 Rg8? 59.Rc7 Ke6 60.Re7 (60…Kf5 61.d7+-) 1–0. Diener,Rudolf – Mueller,HJ, corr, 1985.

5.Nf3 Bb7 6.Be2 Ne7 7.d4 e4 8.Nfd2 f5 9.0-0 Nf6 10.Nc3 g6 11.d5 Bg7 12.Nb3 a6 13.Nd4 Bc8 14.a4 c5? 15.dc6+- 1–0. guest – guest, internet, 2009.

5.Nf3 Bb7 6.Be2 Ngf6 7.0-0 Be7 8.Ne1 c5 9.bc5 Nc5 10.Nd3 Nd3 11.Bd3 Be4 12.Be4+/- Ne4 13.Nc3 Nc3 14.Bc3 Bf6 15.Qa4 Qd7 16.Qd7 Kd7 17.Rfd1 Rac8 18.d3 b5 19.d4 ed4 20.Bd4 Bd4 21.Rd4 Rc4 22.Rd2 Rhc8 23.g3 Rc1 24.Rc1 Rc1 25.Kg2 Ra1 26.Kf3 Ke6 27.Rc2 Kd7 28.Kg2 f5 29.f4 h5 30.Rb2 a6 31.Kf3 Rf1 32.Kg2 Ra1?? 33.Kf2 Kc6 34.Ke2 a5 35.Kd3 b4 36.Kc4 Rc1 37.Kd4? Rd1 38.Kc4 d5 39.Kb3 Kb5 40.a3?? Rd3 41.Ka2 Ra3 42.Kb1 Re3 43.Ka2 a4 44.Kb1 b3 45.Kc1 d4 (46.Rd2 a3-+) 0–1. valpa – Nylson, playchess.de, 2003.

5.Nf3 e4 6.Nd4 Bb7 7.Nb3 Ngf6 8.g4 Ne5–/+ 9.Be5 de5 10.a3 Be7 11.Nc3 h6 12.Rg1 Nh7 13.Qc2 Ng5 14.Be2 Nf3 15.Bf3= ef3 16.Qf5 Bf6 17.Ne4+= Rg8 18.Qf3 Kf8 19.Nc1 a5 20.b5 Qc8 21.d3 Ke7 22.Ne2 Rd8 23.Rd1 Qd7 24.N2g3 Kf8 25.Nf5 Be7 26.g5 Be4 27.Qe4+/- hg5 28.Ne7 Ke7?? 29.Rg5 g6 30.Re5 (30.Re5 Kf8 31.d4+-) 1–0. Larsen,Andreas – Danielsen,Magnus (1925), Politiken Cup, 2004.

5.Qc2 Nf6 6.Nf3 Bb7 (6...e4 7.Ng5=) 7.Be2 Be7 8.Nc3 0-0 9.Qf5 Qd7 10.Qc2 h6 11.h4 Na6 12.a3 c5 13.b5 Nc7 14.0-0-0 a6 15.d4 cd4 16.ed4 e4 17.Nd2 ab5 18.cb5 d5 19.Qb3 Ng4 (better is 19...Ne6!? 20.Na4 Nf4–/+) 20.Nde4 Nf2 21.Nf2 Rf2 22.Rdg1 Qd6 23.Kd1 Qf4 24.Rh3 Qd4 25.Rd3 Qh4 26.Bf3 Qg5 (better is 26...Qc4 27.Ne2 Nb5 (27...Qb5?! 28.Bd4 Ra3 29.Qb5 Nb5 30.Ra3 Nd4 31.Ra7 Ne2 32.Be2+=) 28.Qc4 dc4-+) 27.Ne4?? (27.Bc1 Qg6 28.Nd5 Nd5 29.Rd5-+) 27...Rb2!-+ 28.Ng5 (28.Qb2 de4 Passed pawn) 28...Rb3 29.Rb3 Bg5 30.Re1 Ne8 (better is 30...Ra5-+) 31.Re6–/+ Nf6 32.Rb6 Bc8?? (better is 32...Ra7–/+) 33.Rf6!+- Bg4? (33...Bf6 34.Bd5 Double attack; 33...gf6 34.Bd5 Double attack) 34.Rc6 (34.Bg4?! Bf6 35.Be6 Kf8 36.Bd5 Ra5+-) 34...Bf3 35.Rf3 d4 (35...Bf6+-) 36.b6 Rb8 37.a4 Bd8 38.a5 1–0. combijack (1760) – myaayesg, gameknot.com, 2009.

5.d4 ed4 6.Bd4 Nc6 7.Bc3 Nf6 8.Qf3 Bb7 9.Qf5 Be7 10.Nf3 0-0 11.Ng5 h6? 12.Qe6+- Kh8 13.Nf7 Rf7 14.Qf7 Ne5 15.Be5 de5 16.Nc3?? Bb4-+ 17.Rc1 Qd6 18.Be2? Ne4 19.0-0 Nc3 20.Bg4 Rf8 21.Qh5 Ne4 22.Bf5 Rf5?? 23.Qf5=+ Qf6 24.Qh3 Bd2 (24...Bd2 25.Rc2 c5=+). HMBCHESS2 – igraa, Live Game Caissa's Web, 2005.

5.d4+= e4 6.d5 Nf6 7.Ne2 Be7+= 8.Nd4 0-0 9.h3 Qe8= 10.b5 Qg6 11.Nc3 a6 12.a4 Ne8 13.Nce2 Qf7 14.Nf4+= Kh8 15.h4 Nd7 16.Nde6 Rg8?? 17.Ng5+- Bg5 18.hg5 Nf8 19.g6! (19.g6 Qe7 20.gh7+-) 1–0. Gorzel,S – Schmidt,Renate, BL, 1994.

(--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 b6).

5.Be2 Bb7 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 b6 5.Nf3 Bb7 6.Be2).

5.Be2 Bb7 6.Nf3 Be7 7.0-0 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7).

5.Nf3 Bb7 6.Be2 Be7 7.0-0 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7).

5.Nf3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 b6).

5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6).

5.Nf3 Be7 6.Be2 0-0 7.0-0 Nbd7 8.Nc3 Bb7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 8.Nc3 Nbd7).

5.Qc2 g6 (5...Nf6 6.Be2=) 6.Nf3 (6.d4 Nf6+=) 6...f5 (6...Nf6 7.d4+=) 7.c5 (7.Be2 a5 8.b5 c6+-) 7...Ne7 (7...Nf6 8.Bc4 bc5 9.bc5+=) 8.cd6 cd6 9.Qa4 (9.d4 e4 10.Ng5 a6+=) 9...Bd7 10.Qb3 Bg7 (10...Bc6 11.Bc4 Qd7 12.Bf7 Kd8 13.Ng5+-) 11.Ng5 (11.Bc4 Nbc6+=) 11...d5 12.Nc3 White intends b5 12...Bc8 (12...Nbc6 13.f4 ef4 14.Nd5 Nd5 15.Bg7 Ncb4 16.h4+-) 13.Rc1 (13.Bb5 Kf8 14.Rc1+-) 13...Nec6? (better 13...Bf6 14.Nd5 Nd5 15.Rc8 Qc8 16.Qd5 Bg5 17.Qe5 Kd7 18.Bb5 Nc6 19.Qd5 Ke7 20.Bc6 Rd8 21.Qe5 Qe6 22.Qc7 Rd7 23.Bd7 Qd7+-) 14.Nd5+- Bf6 (14...a5 15.Bb5 Bd7 16.Nc7 Qc7 17.Qf7 Kd8 18.Qg7 Re8 19.Nf7 Kc8 20.Be5 Re5 21.Ne5 ab4 22.Nc6 Nc6 23.Qg6 Kb7+-) 15.b5 Na5 (15...Bg5 16.bc6 (16.Rc6?! Nc6 17.bc6 Be6 18.Nc7 Qc7 19.Qe6 Qe7 20.Qg6 Kd8+-) 16...f4 17.Bb5+-) 16.Nf6 Qf6 17.Rc8 Ke7 (17...Kd7 18.Qd5 Kc8+-) 18.Rc7 Nd7 19.Qd5 Rad8 20.Ba3 Ke8 21.Ne6 Rh7 22.Nd8 Qd8 23.Qg8 Nf8 24.Qf8 1–0. michaelbuss (2810) – radarhill, ChessWorld.net, 2014.

5.Nf3 Bg4 6.Be2 c6 7.h3 Bf5 8.d3 Nd7 9.a3 g5 10.e4 Be6 11.Qc1 (11.d4 f6+/-) 11...Be7 (11...Bh6 12.Nfd2=) 12.Nc3 g4 13.hg4 Bg4 14.Qd2 h4 15.Qc2 Rh7 16.Nh2 Be2 17.Qe2 Bg5 18.Nf3 h3 (18...a6!?+=) 19.gh3+/- (19.Ng5 hg2 20.Rg1 Qg5+=) 19...Bf4 20.Bc1 Bc1 21.Rc1 Qf6 22.Kd2 a5 23.b5 Nc5 24.bc6?? (better is 24.Rcg1 Qh6 25.Qe3+-) 24...Nb3= 25.Kc2 Nc1 26.Kc1 Qg5?? 27.Ng5+- Rh3 28.Rh3 Nh6 29.Rh6 Ra6 30.Nb5 a4 31.Qh5 d5 32.Qf7 (32.Qf7 Kd8 33.Rh8) 1–0. Fournier,Frederic (1890) – Rhopanu, Active, 2007.

5.Nc3 Bb7 6.Qc2 Nc6 7.Nd5 Be7 8.Ne2 Qd7 9.a3 Nd8 10.f4 c6 11.fe5 de5 12.Ne7 Qe7 13.Ng3 Qc7 14.Qc3 Nd7 15.Nf5 Ne6 16.Qg3 0-0-0 17.d4 Nf6+= 18.d5 Nf4? 19.d6+- Qd7 20.Be5 N4h5 21.Qf3 Rhe8 22.Bf6 Nf6 23.Bd3 Kb8 24.0-0 Re6 25.c5 Ne8 26.Qe3 Nf6 27.Ng7 Ng4 28.Qd4 Rg6 29.Nf5 Rdg8 30.Ra2 Qe6 31.Bc4 Qe5 32.Qe5 Ne5 33.Bb3 Ba6 34.Rd1 Nf3 35.Kh1 Be2 36.Rdd2 (36.Rdd2 Rg2 37.Re2 Rg1#; better is 36.Re2 Ne5 37.Ne7+-) 1–0. Buczinski,Henryk – Broda,Teofil, Katowice Poland, 1965.

5.Nc3 Bb7 6.Qc2 Nbd7 7.Nf3 Qe7 8.Be2 0-0-0 9.a4+/- d5 10.cd5+- Qb4 11.a5! Qd6? 12.0-0 Kb8 13.Rfc1 c6 14.ab6 Nb6 15.Nb5! Qb4 16.Be5 (16.Be5 Bd6 17.dc6+-) 1–0. mluka (2205) – geldridge (2015), net–chess.com, 2001.

5.d3 Nc6 6.a3 Ne7 7.Nf3 Ng6 8.Be2 Be7 9.0-0 Nf4 10.d4 Ne2 11.Qe2+= ed4 12.Bd4 0-0 13.Nbd2 Re8 14.Qd3 Bb7 15.Rfe1 Bf8 16.Ng5 h6 17.Ngf3 c5 18.Bf6 Qf6 19.e5?? de5-+ 20.Ne4 Be4 21.Qe4 cb4 22.Ne5 Bd6 23.Ng4 Qa1 24.Qe8 Re8 25.Ra1 ba3 26.Ne3 Be5 27.Ra2? Bb2-+ 28.Kf1 Rd8 29.Ke2 a6 30.Nc2 Re8 31.Kf3 b5 32.cb5 ab5-+ 33.Na3 Ba3 34.Ra3–/+ Rb8 35.Rb3 Kf8 36.Ke3 Ke7 37.Kd4 Kd6 38.f4 f5 39.Rb4 Rb7 40.h3 g5 41.g3 gf4 42.gf4 h5 43.h4 Rb8 44.Ke3 Kc5 45.Rb2 b4 46.Rc2 Kd5 47.Kd3 Rb5 48.Rc4 b3 49.Rd4 ½–½. wlittle (2000) – ezepab (1810), net–chess.com, 2002.

5.d3 Be7 6.Nd2 0-0 7.Be2 Nc6 8.a3 Ne8 (8...Nd4!?+=) 9.Ngf3+= f5 10.d4 (10.0-0 Nf6+=) 10...Bf6 (better is 10...Nd4!? 11.Nd4 ed4=) 11.d5+= Ne7 12.Bd3 f4 13.h3 Ng6 14.Qe2 Bd7 15.b5 a6 16.a4 a5 17.0-0-0 (17.0-0!?+=) 17...h6 18.Rdg1 Kh7 19.Nf1 Be7 20.Bc3 Nf6 21.Bd2 Ng8 22.Kb2 Bf6 23.Kb3 Qe7 24.Bc1 Rac8 25.Qc2 Be8 (better is 25...Bh4!?+=) 26.g3+= fg3 27.Ng3 Nf4?? (better is 27...Kh8+=) 28.Bf4+- ef4 (28...g6 29.Bd2 Bg7+-) 29.e5 Kh8 30.ef6 (better is 30.Nf5 Qd8 31.ef6 Qf6 32.Ng7 Ne7+-) 30...Nf6 (30...Qf6 31.Ne4 Qe7+-) 31.Nf5 (31.Nf5 Qd8 32.Rg7+-) 1–0. Engelhardt,Erhard (1630) – Platow,Gerd, 7th Berlin–ch Seniors, 2011.

5.d3 g6 6.Nf3 Bg7 7.Be2 0-0 8.0-0 Nc6 9.b5 Nd4 10.Nd4 ed4 11.Bd4 a5 12.a4 Bb7 13.Bf3 c5 14.Bc3 Bc8?? 15.e5+- Ra7 16.ef6 Bf6 17.Bf6 Qf6 18.Nd2 Re7 19.Ne4 Qd4 20.Qc2 Qf6 21.Nf6 Kg7 22.Nd5 Re5 23.Nb6 Bf5 24.Qc3 Rfe8 25.Rae1 Kf8 26.Re5 Re5 27.Be4! Bg4 28.f3 Be6 29.Bd5 Bf5 30.g4 Be6 31.Be6 Re6 32.Nd5 Re8 33.Qh8 1–0. hal1958 – cxstevec, playchess.de, 2003.

5.f3 Nbd7 6.d4 c6 7.Bd3 Bb7 8.Ne2 a6 9.a4 d5=+ 10.de5 Bb4 11.Nd2 Ne5?? 12.Be5+/- de4 13.fe4?? Qd3-+ 14.Bf6 gf6 15.Rc1 Qe4 16.0-0? Qe3 17.Kh1 Bd2 18.Rc2 Rd8 19.Rf6 c5 20.Ng3 Bc3 21.Qf1 Bf6 22.Re2 Bg5 23.Re3 Be3 24.h3 Rg8 25.Qe1 Rd3 26.Qe2 Rg3 27.Qd3 Bg2 28.Kh2-+ Bf4 29.Qg3 Bg3 30.Kg2 Be5 31.Kf3 f5 32.Ke2 h5 33.Kd3 Kd7 34.Ke2 Kd6 35.Kf3 Ke6 36.Ke3 f4 37.Ke4 a5 38.h4 Kf6 39.Kf3 Kf5 (39...Kf5 40.Kg2 Ke4 41.Kh3 Kd3 42.Kg2 Ke2 43.Kh2 f3 44.Kh3 f2 45.Kg2 f1Q) 0–1. Salvatore – dhub noire, ChessWorld.net, 2006.

5.d3 Nf6 6.Nbd2 Be7 7.g3 0-0 8.Bg2 Nbd7 9.0-0 a5 10.a3 ab4 11.ab4 Ra1 12.Qa1 Qa8 13.Nb3 Ng4 14.h3 Nh6 15.Qa8 Ba8 16.Ra1+/- Bb7 17.Ra7+- Rb8 18.Nfd2 Bg2+/- 19.Kg2 Rc8 20.Nf3 f5 21.Ne1 Nf7 22.Nc2+/- Nd8 23.b5 Ne6 24.Ne3 g6 25.Nd5 Bf8 26.d4 Bg7?? 27.Ne7+- (27.Ne7 Kf7 28.Nc8 ed4 29.Nd6 Ke7 30.Nc8 Kf7 31.e3+-) 1–0. jmazaira (2000) – mcampo (1930), net–chess.com, 2003.

5.d4 Nd7 6.e3 Ngf6 7.d5 e4 8.Nfd2 c6 9.Nc3 cd5= 10.cd5 Be7 11.Nde4+/- Ne4 12.Ne4 0-0 13.Rc1 Nf6 14.Nf6 Bf6 15.Bf6 Qf6 16.Rc7 Rab8 17.Bd3 Qe5 18.Qb1 Bd5 19.0-0+/- Qh5 20.Be4 Be4 21.Qe4 a5 22.Rfc1 ab4 23.Qb4+/- Ra8 24.R7c2 Qa5 25.Qd6+/- h6 26.e4 Rfd8 27.Qe7 Rd2 28.h3+/- Rc2 29.Rc2 Qe1 30.Kh2 Qd1 31.Rc7 Rf8 32.f3 Qd2 33.a3 Qf4 34.Kg1 h5 35.Rd7 Qe3 36.Kf1 Qc1 37.Kf2 Qc2 38.Kg3 Qc3 39.Kh2 Qe3+/- 40.Qd6 h4 41.Rd8+- Rd8 42.Qd8 Kh7 43.Qh4 Kg8 44.Qd8 Kh7 45.Kg3 Qe1 46.Kf4 Qc1 47.Kg4 Qg1 48.g3 f6 49.Qd5 Qe3 50.a4 Kh8 51.h4 Qa3 52.Qb5 Qd6 53.Qh5 Kg8 54.Qd5 Qd5 55.ed5 Kf7 56.Kh5 g6 57.Kh6 g5 58.h5 Ke7 59.Kg7 Kd6 60.Kf6 Kd5 61.h6 1–0. marekt – emodim, GameColony.com, 2002.

5.d4 e4 6.Nfd2 Nf6 7.e3 d5 8.c5 bc5 9.bc5 Nc6 10.Nc3 Be7 11.Qa4 0-0 12.Bb5 Nb8 13.c6 Bc8 14.Nb3 a6 15.0-0 Ng4 16.h3 Nh6 17.f3 Bd6 18.fe4 Qg5 19.Rf3 Bg4 20.hg4 Ng4 21.e5 Qh4 22.Rh3 Qf2 23.Kh1 Be5 24.de5 Qb2 25.Rc1 Nf2 26.Kg1 Nh3 27.gh3 Nd7 28.cd7 ab5 29.Qb5 f6 30.Qd5 Kh8 31.e6 Qa3 32.Nb5 Qb2 33.e7 c6 34.ef8Q Rf8 35.d8Q 1-0. foytik (2340) - jnyh123 (2055), Rated Classical game, lichess.org, 2016.

5.e3 (--> 4.e3 Bb7 5.Nf3).

5.e3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 b6 5.Nf3 Bb7).

5.e3 Nf6 6.Nc3 Be7 7.Be2 0-0 8.0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 8.Nc3).

5.Nc3 Bb7 6.g3 g6 7.Bg2 Nbd7 8.0-0+= Bg7 9.Qc2 0-0= 10.d3 Re8 11.Qb3 a6 12.Rfd1 Rb8 13.Nd2 Bg2 14.Kg2 c5 15.b5 a5 16.Nde4 Ne4 17.Ne4 Qe7 18.Nc3 Nf6 19.Rac1 h5 20.h4 Nd7 21.Rc2 f5 22.Nd5 Qd8 23.Bc1+= Kf7 24.Bg5 Bf6 25.f4 ef4 26.Bf4 Be5 27.Bg5+/- Bf6 28.Bc1 Ne5 29.Rf1+/- Ng4 30.e4! fe4?? 31.Bg5 ed3 32.Bf6 Nf6 33.Qd3 (33.Rf6?! Qf6 34.Rf2 Qf2 35.Kf2 Re2 36.Kf3 a4 37.Qd3 Ra2+-; 33.Nf6?! Re2 (< 33...dc2 34.Ne8 Kg8 35.Nf6 Qf6 36.Rf6+/-) 34.Re2 de2=+) 1–0. pcmvr (2775) – jcosta (2430), net–chess.com, 2008.

5.Nc3 c6 6.e3 g6 7.Bd3 Bg7 8.0-0 Rg8 9.Qa4 Bd7 10.h3 Qe7 11.e4 a6 12.c5 dc5 13.bc5 b5 14.Qa5 Qd8 15.Qd8+/- Kd8 16.Ne2 Be6 17.Be5 Nfd7 18.Bg7 Rg7 19.Rfc1 f5? 20.Ned4+- Bg8 21.ef5 gf5 22.Nf5 Rf7 23.Nh6 Rg7 24.Ng8 Rg8 25.Bh7 Rf8 26.Nd4 Rh8 27.Be4 Nf6 28.Bc6 Nc6 29.Nc6 Kc7 30.Ne5 Ne4 31.d3 Nf6 32.Ng6 Rh6 33.Nf4 Kc6 34.a4 b4 35.Rc4 a5 36.Re1 Nd5 37.Ne2 Rb8 38.Nd4 Kc7 39.Re5 Nf4 40.Re7 Kd8 41.Nf5 Rf6 42.Rd4 Kc8 43.Rf4 Rc6 44.Nd6 Kd8 45.Re8 Kc7 46.Rf7# 1–0. jaskier (2155) – arok, internet, 2007.

5.g3 Bb7 6.Bg2 Nbd7 7.0-0 Be7 8.Qc2 h6 9.Rd1 c5 10.bc5 Nc5 11.d4 Ncd7? (better is 11...ed4 12.Bd4 Rc8=) 12.de5+- Bf3? (better is 12...de5 13.Ne5 Bg2 14.Kg2 Qc8 15.Nd7 Nd7 16.Bg7 Rg8+-) 13.ef6 (13.Bf3?! de5 14.Ba8 Qa8+-; 13.ef3 de5 14.f4 ef4 15.Bf6 Bf6 16.Qe4 Kf8 17.Qa8 Qa8 18.Ba8 Ke7+=) 13...Bg2 14.fg7 (14.Kg2?! Nf6 15.Nc3 0-0+=) 14...Rg8 15.Kg2 Nf6 16.Bf6 Bf6 17.Qe4 Kd7 18.Nc3 Bg7?? (18...Bc3 19.Rd6! Kd6 20.Rd1 Kc7 21.Qf4 Kc6 22.Qf3 Kc5 23.Rd8 Rad8 24.Qc3 f5+-) 19.Rd6!!+- Kd6 20.Rd1 Kc7 21.Nb5 Kb8 22.Rd8 Rd8 23.Qe7 Rc8 (23...Be5 24.Qd8 Kb7 25.Qd5 Ka6 26.Qa8 Ka5 27.Na7 Kb4 28.Nc6 Kc4 29.Ne5 Kd4 30.Nf7 Kc3 31.Qc6 Kb2 32.Qb5 Kc3 33.Nh6 Kc2 34.e4 Kc3 35.e5 Kd2 36.e6 Kc3 37.e7 Kd2 38.Qb2 Kd3 39.e8Q b5 40.Qee2) 24.Nd6 (24.Nd6 Rc7 25.Qd8 Rc8 26.Qc8) 1–0. Degterev,Pavel (2250) – Cortes,Jose, CP–2010–P–00020, 2010.

5.Nf3 Nc6 6.Bg2 e4 (6...Nge7 7.Qa4=) 7.Nh4 Ne5 (7...d5 8.cd5 Nb4 9.a3 Nd5 10.Qa4 Qd7 11.Qd7 Kd7 12.Be4=) 8.d3+=. michaelbuss (2790) – rainyebi (2245), ChessWorld.net, 2012.

5.Nf3 Bf3 6.ef3 Nf6 7.f4+= Nbd7 8.Bg2 Rb8 9.Nc3 Be7 10.Nb5+/- a6 11.Na7+- (11.Na7 0-0 12.Nc6+-) 1–0. Woelfelschneider,Peter – Bonato,Osiris, 2010.

5.Nf3 Nf6 6.Bg2 c5 7.b5 Be7 8.Nc3 Ne4 (8...0-0 9.0-0=) 9.Nd5 (better 9.0-0=) 9...0-0 (better 9...Nf6!? 10.Ne7 Qe7=) 10.Ne5+- Bd5 11.cd5 de5 12.Be4 (12.d6 Nd6 13.Ba8 Nb5+=) 12...f5+= 13.Bg2 e4 (13...Qd6 14.0-0 Nd7 15.Qc2+=) 14.d3 Bf6 15.Bf6 Rf6 (15...Qf6 16.0-0+-) 16.de4+- f4?? (better 16...Qd6+-) 17.e5 Rg6 (17...f3 18.Bf3 Rf3 19.ef3 Qe8+-) 18.d6 Nc6 (18...Rg5 19.Bd5 Kh8 20.gf4+-) 19.bc6 Qg5 (19...Rc8 20.Qd5 Kf8+-) 20.c7 Rf8 21.Qd5 Kh8 22.d7 fg3 23.d8Q gf2 24.Kf1 Qf4 25.c8Q Rgf6 (25...h5 26.Qf8 Qf8 27.Qf8 Kh7 28.Qdg8 Kh6 29.Qf5 Rg2 30.Qgh7) 26.ef6 (26.ef6 Qc1 27.Rc1 h6 28.Qf8 Kh7 29.Qg7) 1–0. michaelbuss (2790) – naskme (1715), ChessWorld.net, 2012.

4.b5 a5 5.a4 b6 6.e3 Bb7 7.Nf3 Nd7 8.d3 Be7 9.Be2 h6 10.0-0 Ngf6 11.d4 ed4 12.ed4 0-0 13.d5 Re8 14.Re1 Nh7 15.Qd2 Bf6 16.Bf6 Ndf6 17.Nc3 Bc8 18.Bd3 Bg4 19.Re3 Re3 20.Qe3 Bf3 21.Qf3 Ng5 22.Qe2 Qe8 23.Re1 Qe2 24.Re2 Re8 25.Re8 Ne8 26.f3 Nf6 27.Kf2 Kf8 28.Ke3 Ke7 29.Ne4 Nfe4 30.Be4 Ne4 31.Ke4 Kf6 32.f4 g5 33.g3 Kg6 34.fg5 Kg5 35.h3 f5 36.Ke3 h5 37.Kf3 h4?? (better is 37...Kf6+=) 38.gh4+- Kh4 39.Kf4 Kh3 40.Kf5 Kg3 41.Ke6 Kf4 42.Kd6 Ke4 43.Kc6 Ke5 44.d6 (44.d6 Ke6 45.d7+-) 1–0. Fournier,Frederic – chuco, Active, 2008.

4.b5 Nf6 5.e3 b6 6.Qf3 e4 7.Bf6 Qf6?? (better 7...ef3 8.Bd8 Kd8 9.Nf3 Be7+-) 8.Qe4+- Kd8 (8...Be7 9.Nc3 (9.Qa8?! Qa1 10.Bd3 Qa2+-) 9...d5 10.Qd5+- (10.cd5?! Bf5 11.Qf3 Bg6+-)) 9.Nc3 (9.Qa8?! Qa1 10.Bd3 Nd7+-) 9...Qe7 10.Qa8 Nd7 (10...Qb7 11.Qb7 Bb7 12.Nf3+-) 11.Be2 (better 11.Nd5 Qe6 12.Qa7 Nf6 13.Qb6 Kd7 14.Qc7 Ke8 15.Nf6 gf6+-) 11...Nf6 (11...Ne5 12.f4 Ng6 13.0-0-0+-) 12.Bf3 Qc7 (12...g5 13.Nge2+-) 13.Nge2 g6 (13...Be7 14.d4+-) 14.Nf4 (14.0-0 Bg7 15.d4 Nd7+-) 14...Bg7 15.Qc6 (15.0-0 g5 16.Nh5 Nh5 17.Bh5 Qb7 18.Qb7 Bb7 19.Bf7 Rf8+-) 15...Re8 (15...Qb8 16.h4+-) 16.Qc7 Kc7 17.Nfd5 (better 17.Rd1 g5 18.Nfd5 Nd5 19.Nd5 Kd8+-) 17...Kd7 (17...Kd8 18.Nf6 Bf6 19.0-0-0+-) 18.Nf6 Bf6 19.Bc6 (19.Bc6 Kd8 20.Be8 Ke8 21.Rc1+-) 1–0. jaddwarrior (1880) – JodyDillow (1630), ChessWorld.net, 2013.

5.a4 ab5 6.ab5 Ra1 7.Ba1 Qa5 8.Nc3 Ne7 9.Ne4 Qc7 10.Nf3 b6 11.e3 f6 12.Be2 Ng6 13.0-0 Be7 14.d4 cd4 15.ed4 0-0 16.de5 fe5 17.Qd2 Nf4 18.Rd1 Qd7 19.Nd6?? Ng2?? 20.Kg2 Qh3 21.Kg1 Qg4 22.Kf1 Qh3 23.Kg1 Qg4 24.Kf1 Qh3 25.Kg1 ½–½. Szerszunowicz – mati111pl, kurnik.pl, 2008.

5.a4 b6 6.e3 Nd7 7.Nf3 Ngf6 8.Be2 Ne4 (8...e4 9.Ng5+=) 9.d3 Ng5 10.Nbd2 Qf6 11.0-0 h6 12.Ne4 Ne4 13.de4 Bb7 14.Bd3 Be7 15.Qc2 Qg6 16.Bc3 Bg5 17.Rfb1 Nf6 18.a5 0-0 19.ab6 a5 (better is 19...ab5!? 20.Rb5 Be4 21.Be4 Qe4 22.Qe4 Ne4 23.Ra8 Ra8+-) 20.Ba5+- Ng4 (better is 20...Nd7+-) 21.h3 (21.Ng5?! Qg5 22.Rd1 f5 23.ef5 Nh2+-) 21...Nf6 22.Bd2 (better is 22.h4!? Be3 23.fe3 Rfb8+-) 22...Qh5 (22...Be4 23.Be4 Ne4 24.Ng5 hg5 25.Ba5+-) 23.Qd1 (23.Ra7 Rfb8+-) 23...Bh4? (better is 23...Be4!? 24.Be4 Ne4+/-) 24.Ra8 Ba8 25.Ra1 Bb7 (25...Be4 26.Be2 (26.Nh4?! Qd1 27.Rd1 Bd3+=) 26...Rd8 27.Bc3+- (27.Nh4?! Qh4 28.f3 Bb7+/-)) 26.Ra7 Rb8 27.Qc2 g5 28.Nh2 g4 29.hg4?? Ng4? 30.Ng4+- Qg4 31.Be1 Qh5 32.Qa2 Bc8?? 33.Ra8 Bf2 34.Bf2 Qd1 35.Bf1 Ra8 36.Qa8 Qg4 37.b7 Kg7 38.bc8Q Qc8 39.Qc8 h5 40.Qd7 Kg6 41.Qd6 f6 42.Qc5 Kg5 43.b6 h4 44.b7 h3 45.Qf8 hg2 46.Bg2 Kg4 47.Qg7 Kh5 48.Qf6 Kg4 49.Qf3 Kg5 50.b8Q Kg6 51.Qg8 Kh6 52.Qh3 1–0. Fournier,Frederic (1880) – nattan308, Owl21.com, 2007.

5.e3 a5 6.a4 e4 (6...Nf6!?=) 7.d3+/- Bg4?? (7...Bb7 8.de4 Be4 9.Nf3+/-) 8.Be2 (better is 8.Qg4 Nf6 9.Bf6 Qf6 10.Qe4 Be7 11.d4+-) 8...Be2 9.Qe2 Nf6 (9...Qg5 10.de4 Qg2 11.Qf3 Qf3 12.Nf3+/-) 10.Nc3 (10.de4 Nbd7+/-) 10...ed3 11.Qd3 Nbd7 12.Nf3 Be7 13.0-0 0-0 14.Nd5 Nd5 15.Qd5 Bf6 16.Bf6 Nf6 17.Qd3 d5 18.Rad1 Ne4 19.cd5+/- Nd6 20.Nd2 c4? 21.Nc4+- Nc4 22.Qc4 Rc8 23.Qb3 Qd6 24.f3 Rc5 25.e4 Rfc8 26.Qa3 Rc3?? 27.Qd6 Ra8 28.Qb6 1–0. Fournier,Frederic (2090) – NN, Europe–echecs.com, 2013.

5.e3 a6 6.ba6 Nc6 7.Nf3 =.

5.e3 f6 6.Nf3 (6.Qh5!? g6 7.Qf3+/-) 6...e4= 7.Ng1 Be6 8.d3 ed3 9.Bd3 d5 10.cd5 Bd5 11.f3 Bf3?? (better is 11...c4 12.Bc2 a6=) 12.Nf3 c4 13.Bc4 Qd1 14.Kd1 Bc5 (14...Nd7 15.Ke2+-) 15.Ke2 (better is 15.Bd5+-) 15...Ne7 16.Nbd2 Nd7 17.Bd4 Bb4 18.a3 Bd2 19.Nd2 a5 20.a4 Rc8 21.Rac1 g5 22.Be6 Rc1 23.Rc1 Nb8 24.Bb6 Rf8 25.Bc5 Kd8 26.Be7 Ke7 27.Bf5 Rd8 28.Rc7 Kd6 29.Rc8 Rc8 30.Bc8 Kc5 31.Kd3 Kb4 32.Ba6 Ka4 33.Kc3 Na6 34.ba6 Kb5 35.a7 a4 36.a8Q h5 37.Qb7 Kc5 38.Qb4 Kd5 39.Qa4 Ke5 40.Qd4 Kf5 41.Nf3 Kg6+- 42.Qe4 f5 43.Qe6 Kg7 44.Ng5 h4 45.Qf7 Kh6 46.Ne6 h3 47.Qg7 Kh5 48.Qg5 1–0. Fournier,Frederic – JulienWeedy, Active, 2008.

5.e3 Nf6 6.Na3 Be7 7.f3 (7.Be2 a6=) 7...a6=+ 8.Bd3 a5 (8...0-0 9.Ne2=+) 9.g3 Bb7 10.e4 (10.Bf5 0-0=+) 10...g5 (10...h5 11.Qc2=) 11.Ne2 h5 12.h3 h4 13.gh4 (13.g4!?=) 13...Rh4–/+ 14.Ng3 Bc8 15.Nf5 (15.Bf1 Rh6=) 15...Rh7 16.Qc2 Bf5 (16...Nh5 17.0-0-0=+ (worse 17.Ne7 Qe7 18.0-0-0 Qf6–/+)) 17.ef5= Nbd7 18.0-0-0 Rb8 (better 18...Qc7!?=) 19.Rdg1+- Rh5 20.Qa4 (20.Be2 Rh4 21.Rg5 d5+-) 20...Ng8 21.h4 Bf6 (21...Nh6!?+=) 22.hg5 Rh1 23.Rh1 Bg5 24.Rh8 Ndf6 25.Qd1 Ke7 26.Rh2 Bf4 27.Rg2 Kd7 28.Qg1 (28.Be4 Ne7=) 28...Kc7 29.Rg7 Qe8? (29...Qd7 30.Nc2=) 30.Be4 (better 30.Qg6!+-) 30...Rd8= 31.Nc2 (31.Qg6 Rd7 32.Qg2 Ne7=) 31...Bh6 (31...d5 32.cd5 Nh6 33.Qf1=) 32.Rg2 Qd7 33.Ne3 Be3 34.de3 (34.Qe3 Kb8+=) 34...Ne7 f5 becomes a target (34...Ne4 35.Rg8 Rg8 36.Qg8 Qf5 37.fe4 Qf1 38.Kd2 Qf2 39.Kd3 Qb2 40.Qf7 Kd8 41.Qf6 Kd7 42.Qf5 Ke7 43.Qg5 Ke6 44.Qf5 Ke7 45.Qg5 Ke8 46.Qg6 Ke7 47.Qg5=) 35.Rg5 Ne4 36.fe4 f6 (36...Rh8!?+=) 37.Rg7+- Kc8 38.Qh2 Rg8 (38...Qb7!? 39.Qh1 Rf8+-) 39.Qh6 Rf8 40.Qh7 Kd8 41.Bc3 a4 (41...Qe8 42.Qh1+=) 42.Kb2 (42.Qh1 Kc8+-) 42...Qe8+= 43.Ka3?? (better 43.Qh2+=) 43...Rh8-+ 44.Re7 Qe7?? (better 44...Rh7 45.Re8 Ke8 46.Ka4 Rh3-+) 45.Qh8+- Kd7 (45...Kc7 46.Qa8+-) 46.Qa8 (better 46.Ba5! Kc7+-) 46...Qd8 47.Qd8 (better 47.Qc6 Ke7 48.Qb7 Qd7 49.Qb6+-) 47...Kd8 48.Ka4 Ke7 49.Kb3 (better 49.Ba5 Kd7+-) 49...Kf7 50.a4 (better 50.Ba5! Ke8 51.Bb6 Kd7+-) 50...Ke8 51.a5 Kd7 52.a6 Kc7 53.Be1 d5 54.cd5 Kc8 55.Bh4 (55.Bh4 Kd7 56.a7 Kc7 57.a8Q c4 58.Kc4 Kd7 59.d6 Kd6 60.Qd8) 1–0. Delboy Smith (1795) – NN (1695), ChessWorld.net, 2017.

5.e3 Nf6 6.d3 Be7 7.Be2 0-0 8.Bf3 e4 9.de4 (9.Be4?! Ne4 10.de4 a6+=) 9...Bb7 10.e5 de5?? (better is 10...Ne4 11.Nd2 Nf2 12.Kf2 Bf3 13.Ndf3 de5 14.Qd8 Rd8 15.Be5 a6+-) 11.Qd8 Rd8 (11...Bd8?? 12.Bb7 Na6 13.ba6+-) 12.Bb7 Nbd7 13.Ba8 Ra8 14.Nf3 Ne4 (14...e4 15.Nfd2+-) 15.0-0 (better is 15.Ne5!? Bf6 16.Nd3 a6 17.Bf6 Ndf6 18.ba6 Ra6+-) 15...f6 16.Nc3 (16.Nc3 Nc3 17.Bc3+-) 1–0. Kappel,Ray – Recio,Luis, 24. LSS No Engine Cup Preliminary, 2010.

5.e3 Nf6 6.Qf3 e4 7.Bf6 ef3 8.Bd8 Kd8 9.Nf3 Be7+/-.

5.Be5+= Bd6?? 6.Bg7+- Nf6 7.Bh8 Kd7 8.Bf6 Qf6 9.Nc3 Be5 10.d4 Bd4 11.e3 Ke7 12.Nd5 Ke6 13.Nf6 Kf6 14.ed4 cd4 15.Qd4 Ke7 16.Qc5 Kf6 17.Qc8 a5 18.Qb7 Ra6 19.0-0-0 Re6 20.Qb8 Kg7 21.Qg3 Kf8 22.Rd8 Ke7 23.Qg5 f6 24.Qg8 h5 25.Qe8# 1–0. b4_player – opponent, gamecolony.com, 2007.

5.Be5 Nd7 6.Bb2 Qg5 7.Nf3+/- (7.Nf3 Qd8 8.g3+/-) 1–0. Woschkat,Karl_Heinz (1890) – Guthier,Andreas (2000), remoteschach.de, 2003.

5.Be5 f6 6.Bb2 Be6 7.e4 g6 8.Qf3 Nc6+= 9.Ne2 Bg7 10.d3 h6 11.a3 Rh7 12.g3 h5 13.Bg2 a6 14.Nbc3?? g5 15.h3?? g4 16.hg4?? Bg4?? 17.Qe3 Be2? 18.Ne2+- Qd6 19.f4 a5 20.Bf3 0-0-0 21.0-0-0 Nge7 22.Rh5 Rh5 23.Bh5 Rh8 24.Bg4 Kb8 25.Bf3 Rh3 26.d4 cd4 27.Nd4 Nd4 28.Rd4 Qc7 29.Qd3 Rg3+/- 30.Rd8 Ka7?? 31.Bd4 b6 32.Be3 Rf3 33.Rd7 Kb8 34.Rc7 Kc7 35.Bb6! Kb6 36.Qf3 Kc5 37.Qc3 Nc6 38.Kd2 Nd4 39.Qa5 Kc4 40.Qc7 Kb3 41.Qg7 Nf3+- 42.Ke3 (42.Ke3 f5 43.Qf7 Ka3 44.Qf5 Ng1 45.e5 Kb4 46.e6 Nf3 47.Kf3 Kc4 48.e7 Kb4 49.e8Q Kc3 50.Qc5 Kb3 51.Qeb5 Ka2 52.Qa7#) 1–0. Baer,Cy (1895) – Korn,Lothar (1700), RSS5E–28 remoteschach.de, 2008.

5.Be5 f6 6.Bb8+/- Rb8 7.Qa4 b5 8.cb5+- c4 9.Nc3 g6 10.Qa7 Be6 11.Nf3 Bh6 12.Qc5 g5 13.Nd4 Kf7 14.Ne6 Ke6 15.e3 f5 16.Bc4 (16…Kf6 17.h4 gh4 18.a4+-) 1–0. Wall,Bill – Coolio, Internet, 2002.

5.Be5 Qg5 6.Bb8 Rb8 7.Qa4 b5 8.cb5 Bd7 9.Nc3+- Rb7?? 10.Qe4 Be7 11.Qb7 1–0. guest78 – guest1332, ICC, 2002.

5.Nf3 e4+= 6.Ng1 Bd6?? (better is 6...Nf6+=) 7.Bg7+- f6 (7...Be5 8.Be5 f6 9.Bb8 Rb8 10.Nc3+-) 8.Bh8 Bf5 9.Nc3 Qe7 10.Nd5 Qf7 11.e3 Nc6 12.Be2 0-0-0 13.Bh5 (13.Rb1!? Be5 14.Qb3 b6+-) 13...Bg6 14.Bg6 hg6 15.Ne2 (15.d4!? cd4 16.ed4 Nb4+-) 15...Nce7 16.Qa4 Nd5 17.cd5 Ne7 18.Bf6! (worse is 18.Qe4 Rh8 19.Qe6 Qe6 20.de6 Re8+-) 18...Qf6 19.Qa7 (better is 19.Rb1 Rf8 20.Rf1 Nd5 21.Qa7+-) 19...Qa1-+ 20.Nc1 Qc1 21.Ke2 Qh1 22.Qa8 Kd7 (22...Bb8 23.d6 Rd6 24.Qa4-+) 23.Qb7 (23.Qa4 Nc6! 24.dc6 bc6 25.Qe4-+) 23...Ke8 24.a4 Qg2 25.a5 Qf3 26.Kf1 Nd5! 27.Qd5 Qh1 28.Ke2 Qf3 29.Kf1 Bh2 30.Qe6 Kf8 31.Qg6 Rd2 32.Qh6 Kf7 33.Qh7 Kf6 34.Qh4 Kg6 35.Qh2 Rd1 0–1. Fournier,Frederic – albayano, Active (5/0), 2005.

6.Bb2 Be6 7.Nf3 Bc4= 8.Nc3 Nf6 9.Qa4 Be6 10.Ng5 Qd7 11.e3 Rd8 12.Rd1 Be7 13.Ne6 Qe6 14.Bc4 Qd6 15.d4 0-0 16.d5 Ne5= 17.Be2 a6 18.Ne4 b5?? 19.Nd6+- ba4 20.Nf5 Ng6 21.d6 Bd6 22.Nd6 Rb8 23.Ba3 1–0. pierre – opponent, internet, 2009.

6.Bb2 Nf6 7.Nf3 Qc7 8.Bf6+/- gf6 9.e3 Be6 10.Nc3 0-0-0 11.Qa4 Kb8 12.0-0-0 Bd7 13.Nd5 Qd6 14.Qc2 Rc8 15.d4 Nb4? 16.dc5+- Qc5? 17.Nb4 Qb4 18.Rd7 Qa3 19.Kb1 Qb4 20.Ka1 Bg7 21.Rf7 Rhg8 22.Qb3 f5 23.Kb1 Qb3 24.ab3 Rc7 25.Rf5 Rd8 26.Be2 a6 27.Rd1 Rd1 28.Bd1 Rd7 29.Rd5 Re7 30.Nh4 Rf7 31.f4 Kc7 32.Bc2 Re7 33.Nf5 Rd7 34.Rd7 (34...Kd7 35.Ng7+-) 1–0. Bonetti,Shane – keoki, ICC, 2002.

6.Bb2 Nf6 7.Nf3 Bg4 8.Nc3 Bd6 9.Nd5 Be7 10.e3 Bf3 11.Qf3+/- 0-0 12.Bf6+- Bf6 13.Nf6 Qf6 14.Qf6 gf6 15.Be2 Rad8 16.Rb1 b6 17.a3 Ne5 18.f4 Nc6 19.g4 Rd6 20.Rg1 h6 21.d3 Re8 22.Kf2 Rde6 23.Bf3 Na5 24.e4 Nb7 25.h4 Nd6 26.g5 fg5 27.hg5 hg5 28.Rg5 Kf8 29.Rbg1 Ke7 30.e5 Nc8 31.Rg7 a5? 32.Bd5 Rh6 33.Rf7 Kd8 34.Rgg7 Rh2 35.Kg3 Ra2 36.Rd7 1–0. MarcosRamos (1695) – Razaowns, internet, 2007.

6.Bc3 Bf5 7.d3 Nf6 8.Nd2 Bd6 9.Rb1 b6 10.Qa4 Bd7 11.Bf6+/- Qf6 12.Ne4 Qe5 13.Nf3+- Qe7 14.Rb6 Nd4 15.Nd6 Qd6 16.Rd6 Ba4 17.Nd4 cd4 18.Kd2 Rb8 19.Kc1 0-0 20.Rd4 Rb4 21.Rd6 g6 22.Ra6 Rfb8 23.Ra7 Rb1 24.Kd2 R1b2 25.Kc3 Rc2 26.Kd4 Rd8 27.Ke5 Ra2 28.e4 f6 29.Ke6 Bd7 30.Rd7 Ra6 31.Ke7 Rf8 32.Rd6 Ra7 33.Ke6 Ra5 34.f4 Re8 35.Kd7 Kf7 36.Kc6 Rc8 37.Kb6 Ra3 38.d4 Rb3 39.Ka7 Rcb8 40.c5 R3b7 41.Ka6 Rb3 42.Bc4 (42.Bc4 Ke7 43.Re6 Kd8 44.Bb3 Rb3 45.Rf6+-) 1–0. mtre – dana, internet, 2002.

6.Bg3 =.

5.cd6 Qd6 6.Nc3 a6 7.e4 h5 8.Nf3 f6 9.Be2 g5 10.0-0 Nh6 11.Nd5 Nb4?? 12.a4 Nd5+/- 13.cd5 g4 14.Ba3 Qd8 15.Nh4 Ba3 16.Ra3 Qd6 17.Ra1 a5 18.d4+- Rg8 19.Qd2 Rg5? 20.de5 Qe5 21.f4 gf3 22.Nf3 Qe4 23.Bb5 Bd7 24.Rae1 (24.Rae1 Rg4 25.Re4 Re4 26.Qh6 Bb5 27.Qh5 Kd7 28.Qf5 Kc7 29.Qe4 Bf1 30.Qe7 Kb6 31.Qf6 Kc7 32.Qe7 Kb6 33.Kf1+-) 1–0. marnzell – dhub noire, ChessWorld.net, 2006.

5.e3 dc5 6.a3 Nf6 7.Nc3 e4 8.d3 Bg4 9.Be2 Be2 10.Nge2 ed3 11.Nf4 Ne5 12.Na4 Nc4 13.Qd3 Qd3 14.Nd3 Nb2 15.Ndb2 Bd6 16.0-0 b6 17.Nc4 Rd8 18.Rfd1 Bc7 19.Rd8 Kd8 20.Rd1 Kc8 21.Nd6 Bd6 22.Rd6 Rd8 23.Rd8 Kd8 24.Nc3 Kd7 25.f3 Kc6 26.Kf2 b5 27.e4 b4 28.ab4 cb4 29.Nb1 a5 30.Ke2 a4 31.Kd3 Kc5 32.Kc2 Nd7 33.Nd2 Nb6 34.Kd3 a3 35.Kc2 Nc4 36.Nb3 Kb5 37.Kb1 Ka4 38.Ka2 Ne3 39.g4 g6 40.Nc5 Kb5 41.Nb3 Nf1 42.h3 Kc4 43.Nc1 Ne3 44.f4 Nc2 45.Nb3 Nd4 46.Nd2 Kc3 47.Nb1 Kc2 48.h4 Nb5 49.e5 b3 50.Ka1 a2 51.Nd2 Nc3 52.Nb3 Kb3 53.f5 gf5 54.gf5 Nd5 55.e6 fe6 56.fe6 h5?? 57.e7 Ne7?? (57...Ne3!! 58.e8Q Nc2#) ½–½. mrkt – Rommel, itsyourturn.com, 2000.

4.a3 a5 5.b5 c5 6.e3 b6 7.a4 Nf6 8.d3 Bg4 9.Be2 Bh5?? (better is 9...Be6+=) 10.Bh5+- 1–0. Fournier,Frederic – Thomasb, Partie evaluee, 5m + 0s, 2008.

4.a3 Be6 5.e3 Nd7 6.Nf3 Ngf6 7.Be2 Be7 8.d3 0-0 9.0-0 d5 (9...a5 10.Ng5=) 10.cd5 (10.Ne5 Ne5 11.Be5 a5+/-) 10...Nd5 11.Nc3 (11.Ne5 a5 12.ba5 Ra5+=) 11...Nc3 12.Bc3 f6 13.Qc2 Rc8 (13...Bd6 14.d4+=) 14.d4+= e4 (14...Bd6+=) 15.Nd2 (better is 15.Qe4 Bd5 16.Qf5+/-) 15...f5= 16.Bb2 b6 (16...Bd6 17.Nc4 Bc7 18.f4=) 17.Bc4 Bc4 18.Qc4 Kh8 19.Rac1 Qc7 (19...Bd6 20.Qa6=) 20.d5 (20.b5 c5+=) 20...c5 21.Qc3 (21.f3 ef3 22.Nf3 Qd6=) 21...Bd6?? (better is 21...Nf6 22.Rfd1 Rfd8+=) 22.Qg7 1–0. Fournier,Frederic (1650) – adrijd (1605), Active, 2008.

4.a3 f5 5.e3 Be7 6.Nf3 Bf6 7.d4 e4 8.Nfd2 Ne7 9.f3 (9.Be2 0-0=) 9...Bg5 10.f4 Bf6 11.Be2 0-0 12.0-0 Be6 13.Nc3 Bf7 (13...Nd7 14.Qc2=) 14.Qc2 (14.Qe1 c5 15.Nb3 cd4 16.Nd4 Nbc6=) 14...Nd7 15.Rad1 d5 16.cd5 cd5 17.Rc1 Rc8 18.Qb3 a6 19.Na4 b5 20.Rc8 Qc8 21.Rc1? (better is 21.Nc5!?=) 21...ba4–/+ 22.Rc8 ab3 23.Rf8 Nf8 (23...Kf8 24.Ba6 g5 25.g3–/+) 24.Ba6 Bh5 25.Nb3 Nd7 26.Nc5 Nb6 (26...Nc5 27.bc5 g5 28.g3+=) 27.Bb7 (27.a4 Nc4 28.Bc4 dc4+=) 27...Nc4 28.Bc1 Bf7 29.a4= Be8 30.a5 Nc6 31.a6 Na7 32.Bd5+/- Bf7 33.Bb7 Be7 34.Kf2 Kf8 35.h3 Ke8 36.g4 g6 37.g5 Kd8= 38.d5 Kc7+= 39.Ke2 Kb6 40.Ne6 Bb4 0–1. Fournier,Frederic – alboes (1625), Active, 2007.

4.a4 a6 5.Nc3 Nf6 6.e3 Be6 7.Nf3= Be7 8.Qc2 0-0 9.Be2 Qd7 10.a5 h6 11.Na4 Bd8 12.c5 Nd5=+ 13.Bc3 f6 14.d4 e4 15.Nd2 f5 16.Nc4 Qe7 17.Nd6+/- Ra7 18.g3 Bc7= 19.Nc4 Nd7 20.Nab6 Nc3 21.Qc3 Bc4 22.Qc4 Kh7 23.Na4 Bd8 24.Rd1 Nf6 25.Nc3 h5 26.d5 cd5 27.Nd5 Nd5 28.Qd5 Qf6 29.Bh5 Qc3 30.Qd2 Qd2 31.Kd2 Bf6 32.Kc2 Raa8 33.Rd7 Rab8 34.Rhd1 Rfd8 35.Be2 Kh6 36.Bc4 g5 37.Rd8 Bd8 38.Rd6 Kg7 39.Bd5 Be7 40.Rd7 Kf6 41.Rb7 Rd8 42.Bc4 Ke5 43.Rb6 (43.Rb6 Bd6 44.Ra6+-; better is 43.Re7 Kf6 44.Re6 Kf7 45.Re4 Kf8+-) 1–0. De Visser,Arno (1810) – Roosink,Henk, Nova College op, 2002.

4.a4 f5 5.b5 Nf6 6.e3 Be7 7.Nc3 0-0 8.Nf3 Be6 9.Be2 Qe8 10.0-0 Nbd7 (10...Qg6 11.a5=) 11.Ng5+= Bf7 12.Nf7 Qf7 13.d4 e4 14.f3 d5 15.fe4 Ne4 16.Ne4 de4 17.Rc1 White prepares the advance c5 17...Qg6 18.c5 cb5 (18...Bg5 19.Qd2+=) 19.ab5+/- Nf6 (19...Kh8!?+/-) 20.d5 (better 20.Qb3 Kh8 21.Qe6+-) 20...Rac8? (better 20...Ng4 21.Bd4 Bg5+/-) 21.d6 Bd8 22.c6 (22.Bc4!? Kh8 23.Be6 Rb8 24.Bf5 Qh6+-) 22...bc6 23.bc6 Bb6 24.Bd4 Bd4 (24...Ra8 25.c7 Kh8 26.Bb6 ab6 27.d7 Nd7 28.Qd7+-) 25.Qd4 (25.ed4?! Kh8 26.d7 Nd7 27.cd7 Rcd8+-) 25...Rfd8 (25...f4 26.Rf4 a5 27.d7+-) 26.Bc4 Kf8 (26...Kh8 27.Be6 Ng4 28.Bf5+-) 27.Be6 Ra8 (27...Ne8 28.Bf5 Qd6 29.Bc8 Nf6 30.Qd6 Rd6 31.c7+-) 28.Bf5 Qf5 (28...Qg5 29.c7 Kg8+-) 29.Rf5 (29.Rf5 Kf7 30.c7+-) 1-0. BeepBeepImAJeep (2545) - Dabur (1845), lichess.org, 2017.

4.Qb3 Nd7 5.e3 (5.Nf3 Ngf6=) 5...Ngf6 6.Nc3 (6.d4 Be7=+) 6...a5 (6...Be7 7.Nf3=+) 7.b5 c5 (7...Be7 8.d4=+) 8.Na4 (8.Nf3 Nb6=) 8...Nb6 (8...Be7 9.d4=+) 9.Nb6= Qb6 10.g3 (10.f4 Qc7=) 10...a4 11.Qc3 Be7 12.Bg2 0-0 (12...Bf5 13.d3=) 13.Ne2 h5 (13...Bf5 14.d3=) 14.0-0+= Ne4?? (better 14...Bg4 15.Rae1 Nd7+=) 15.Be4+- Bf6 (15...Be6+-) 16.Bf3 (better 16.Qd3+-) 16...e4+= 17.Qc2 (17.d4 ef3 18.Nf4 h4+=) 17...Bb2= 18.Qb2 ef3 19.Nf4 g6? (better 19...h4!?+=) 20.Nd5+- Qd8 (20...a3 21.Qf6 Qd8 22.Qf3+-) 21.Nf6 Kg7?? (better 21...Kh8 22.a3 Bf5+-) 22.Ne8 Kh6 23.Qg7 Kg5 24.Qf8 Be6 25.Qd6 (25.h4 Kg4 26.Kh2 Kf5 27.Nd6 Kf6 28.Ne4 Kf5 29.Qc5 Ke4 30.d3 Qd3+-) 25...Qe8 (25...Qd6 26.Nd6 Kf6+-) 26.Qf4 1–0. jaddwarrior (1625) – Golfguy61, ChessWorld.net, 2015.

4.Qb3 f5 5.e3 Nf6 6.d4 e4 7.f4 h5 8.Nc3 Ng4 9.Nce2 Be6 10.h3 Nh6 11.d5 cd5 12.cd5+= Bd7 13.Nd4 g6? 14.Ne6+- Qe7?? 15.Bh8 Qf7 16.Nc7 Kd8 17.Na8 Bg7 18.Bg7 Qg7 19.Rc1 b6 20.Nc7 Qf6 21.Ne6 Ke8 22.Ne2 Qh4 23.g3 Qf6 24.Qc3 Qc3 25.Rc3 Na6 26.Nc7 Nc7 27.Rc7 a6 28.Nd4 Ba4 29.Ba6 Nf7 30.Bb5 Kd8 31.Ne6 1–0. einaar (2525) – zeca, net–chess.com, 2008.

4.b5 Nd7 5.a4 Ngf6 6.a5 d5 7.b6? (7.e3 cb5 8.cb5 Bb4=+) 7...Bc5 (7...ab6!? 8.cd5 cd5 9.ab6 Ra1 10.Ba1-+) 8.ba7 Bf2?? (better 8...dc4 9.e3 Ra7 10.Bc4 Ra5 11.Ra5 Qa5-/+) 9.Kf2+/- Ne4 10.Ke1 Qh4 11.g3 Ng3 12.hg3?? (better 12.Nf3 Qf4 13.e3+/-) 12…Qg3 (12...Qh1?! 13.Nf3=+) 0-1. hurvajsmanka - opperwezen (2275), Wang Arena, lichess.org, 2017.

4.Qc2 Nf6 5.e3 g6 6.Nf3 Bg7 7.d3 Be6 8.Nbd2 h6 (8...a5 9.ba5 Qa5 10.Be2=) 9.Be2 (9.d4 ed4 10.Nd4 Bc8=) 9...0-0 10.d4 ed4 11.ed4 (11.Nd4 Bc8=) 11...Bf5 12.Bd3 (12.Qd1!?=) 12...Re8=+ 13.Kf1 Bd7 (13...Bd3 14.Qd3 d5 15.c5=+) 14.h3 Na6 15.a3 Nc7 16.Kg1 d5 17.Kh2 Ne6 18.Rhe1 Qc7 19.Kg1 Nf4 20.Bf1 Bf5 21.Qb3 h5 (21...dc4 22.Nc4 N6d5 23.b5=+) 22.Ne5= Nd7 (22...dc4 23.Bc4 N6d5 24.b5=) 23.Ndf3 a5 24.Nd7 Qd7 25.Re8 Re8 26.ba5 Ne2 27.Kh1 Nf4 (27...Re4 28.cd5 cd5 29.Qb6+=) 28.Kh2 (28.Ne5 Qc7+/-) 28...Qc7 29.Kg1 f6 (29...Ne2!? 30.Be2 Re2 31.cd5 Be4 32.dc6 Bf3 33.gf3 bc6=) 30.cd5 Nd5 31.Bc4 (31.Nh4 Be6 32.Ng6 Bf7+/-) 31...Rd8 (31...Kh7 32.Bd5 cd5 33.Rc1+/-) 32.Qb6 (better 32.Nh4+-) 32...Qb6= 33.ab6 Kh7 34.Bd5 Rd5 35.Re1 (35.a4!?+=) 35...Rb5= 36.Bc3 Rb6 37.Re7 Kg8 38.Nh4 (38.Bb4 g5=) 38...Bd3 (38...Bf8 39.Nf5 gf5 40.Rd7 Ba3 41.Kf1=+) 39.Re3 (39.Bb4 Kh7=) 39...Bb1 (39...Rb1 40.Kh2 Rd1=+) 40.Re7 (40.Bb4!?=) 40...Bf8-/+ 41.Rd7 (41.Re3!?-/+) 41...g5 42.Nf3 Bf5 43.Rd8 Kf7 44.d5 (44.a4!? Rb1 45.Ne1-+) 44...Be7 45.Ra8 cd5 (45...Rb1 46.Ne1 cd5 47.Ra4-+) 46.Nd4 Bd7 (46...Rb1 47.Kh2 Bd6 48.g3-+) 47.g3 (47.f3 Bc5 48.Kf1 Rb1 49.Ke2 h4-+) 47...Ra6 (47...Bh3 48.Kh2 Bd7 49.Rh8-+) 48.Ra6 (48.Rb8 Ra7 49.Bb4-+) 48...ba6 49.h4 (49.Nc2 Bh3 50.Nb4 Be6-+) 49...gh4 (49...Ba3 50.Kf1-+) 50.gh4 (50.Bb4 hg3 51.fg3 Bd8-+) 50...Ba3 51.Nf3 (51.Kf1 Be7-+) 51...Bd6 52.Kg2 Bc7 53.Nd4 a5 54.Kf3 a4 55.Ke3 Bb6 56.Kd3 a3 57.Nc2 (57.Kc2-+) 57…Bc5 0-1. bjoernsen (2295) - durdevic (2315), Rated Blitz game, lichess.org, 2016.

4.d4 f6 5.e4 Qc7 (5...ed4 6.Qd4 Na6 7.a3+=) 6.Bd3 (6.Nf3 Ne7+/-) 6...Be6 (6...ed4 7.Bd4 c5 8.bc5+/-) 7.Nf3+/- Nd7 8.0-0 Ne7 9.d5 Bf7 10.Re1 c5 11.Qa4 Ng6 12.bc5 Qc5 13.Ba3 (13.Nc3 Be7+/-) 13...Qc7+= 14.Nc3 a6 (14...Be7+=) 15.Nb5 (better 15.Rab1+/-) 15...Qb8= 16.Nc3 Be7 (16...Qc7!?=) 17.Rab1 Qc7 (17...Qc8!?+/-) 18.Nb5 Qb8 19.Nd6 Bd6 20.c5 Be7 21.c6 Qd8?? (better 21...b5 22.cd7 Kd7+/-) 22.cd7 (22.cb7 Rb8 23.d6 Ba2 24.de7 Ne7 25.Be7 Ke7 26.Qa2 Nc5+-) 22...Qd7 23.Bb5! ab5 24.Qa8 Bd8 25.Nd2 Ne7 (25...b6 26.Qa6 Ne7 27.Rb5+-) 26.Be7 Qe7 (26...Ke7 27.Qa3 Ke8 28.Qd3+-) 27.Rb5 0-0 28.Rb7 Qc5 29.Nb3 Qc3 (29...Qc4 30.Qa7 g6 31.Nc5+-) 30.Rc1 Qb2 (30...Qd3 31.Rb8 Be7 32.h3+-) 31.Rb8 Bb6 (31...Be7 32.Rcc8 g5 33.Rf8 Bf8 34.Rf8 Kg7+-) 32.Rf8 1-0. DEFFM – GuestKCYM, wg freechess.org, 2021.

4.e4 Nf6=+ 5.Nc3 Be6 (5...d5 6.cd5 Bb4 7.Nf3 Bc3 8.Bc3 Ne4 9.Ne5 Nc3 10.dc3-/+) 6.Nf3= Qc7 (6...Nbd7 7.Be2=) 7.Ng5 (7.a3 a5=) 7...Be7 8.Ne6 fe6 9.Be2 Nbd7 10.0-0 0-0 11.Qb3 d5 (better 11...c5!?=) 12.cd5 ed5 13.ed5 cd5 (13...Kh8 14.dc6 bc6 15.a3+/-) 14.Nd5+- Nd5 15.Qd5 Kh8 16.a3 Nb6 (16...a5!?+/-) 17.Qe5+- Qe5 (17...Bd6 18.Qh5 Qd7 19.Bg4+-) 18.Be5 Rad8 (18...a5 19.b5+-) 19.d4 a6 (19...Bf6+-) 20.Bc7 (20.Bc7 Na4 21.Bd8 Rd8 22.Bf3+-) 1-0. onur604 (2320) - RecaptchaBU (2655), Casual Rapid game, lichess.org, 2021.

4.Nf3 Nf6 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 c6 5.Nf3).

4.g3 Nf6 5.Bg2 Be6 6.d3 (6.Nf3 Nbd7=) 6...a5 7.a3 ab4 8.ab4 Ra1 9.Ba1 Qb6 10.Qb3 (10.Nf3 Be7=+) 10...Ng4 (10...d5 11.Nd2 (11.Be5?? Ng4 12.d4 dc4-+) 11...Bb4 12.Bc3-/+) 11.Nh3 Nd7 (11...Be7 12.0-0=+) 12.0-0 Be7 13.Nc3 0-0 14.Na4 (14.Qa3 Rb8=+) 14...Qa7 15.Bc3 (15.b5=+) 15...Qb8 (15...b5!? 16.Nb2 Rc8-/+) 16.Ra1 (16.b5 Qc7=) 16...b5=+ 17.Nb2 Qb6 18.Nd1 (18.Qa2 Rc8=) 18...Rb8 19.Qa2 h6 20.Nb2 (20.Qa7 bc4 21.dc4 Qd8=+) 20...Ngf6 (20...c5 21.bc5 Qc5 22.Bd2-/+) 21.Kf1 (21.Qa5 Qb7 22.cb5 Qb5 23.Qb5 cb5=+) 21...bc4 (better 21...Qd8 22.f4 Ng4-/+) 22.dc4? (better 22.Nc4!? Qc7 23.Qa4-/+) 22...d5-+ Black plans e4 23.c5 Qb5 24.Qa5 e4?? (better 24...Qa5 25.Ra5 d4-+) 25.Nf4= Bf5 (better 25...Qa5 26.Ra5 d4 27.Bd4 Rb4 28.Ne6 fe6=) 26.Kg1 (26.Qb5 Rb5 (26...cb5? 27.Nd1+-) 27.e3 d4 28.Ra8 Kh7 29.ed4 g5+/-) 26...Bd8?? (better 26...g5 27.Qb5 Rb5-/+) 27.Qb5+= Rb5 28.e3 Bc7 (28...Rb7 29.Ne2 Nb8 30.Nd4+=) 29.Ne2+/- Be5 30.Nd4 Bd4 31.ed4 Bg4 (31...Rb7 32.Nd1+/-) 32.Bf1 Rb7 (32...Rb8 33.Ra6 Rc8 34.Na4+/-) 33.Ra6 (33.b5 cb5 34.c6 Rb8 35.cd7 Nd7+-) 33...Rc7 (33...Nb8 34.Rb6 Bc8 35.b5+/-) 34.Na4 (34.h3 Be6+-) 34...Nf8 35.b5 cb5 36.Bb5 Bf3? (36...Ne6!?+/-) 37.c6 (better 37.Ra8!? Bg4 38.c6 Re7+-) 37...Ne6 38.Ba5 Rc8 39.Nc5?? (better 39.Nb6 Re8 40.Ba4+-) 39...Nd4-/+ 40.Ba4 Rb8 (40...Ne8 41.Bb4-/+) 41.Nb7 (41.Rb6 Rb6 42.Bb6 Bg4+=) 41...Ne2 (41...Ne8!?=+) 42.Kf1+= Ne8 43.Bb6 (better 43.Ra7 Rc8 44.Ke1+=) 43...Nd4?? (better 43...Nc3 44.Ke1 Rc8-/+) 44.Bd4+- Nc7 45.Ra5 f5 (45...Rc8+-) 46.Be5 Rd8 (46...Rc8+-) 47.Bc7 (47.Bc7 Rc8 48.Bb6+-) 1-0. pacalmisu (2425) - bjoernsen (2355), Rated Blitz game, lichess.org, 2016.

5.b5 c5 6.Nc3 b6 7.e3 Bb7 8.Nf3 Nd7 9.Be2 Ngf6 10.d3 Be7 11.0-0 Rc8 12.Nd2 Qc7 13.Bf3 h6 14.Bb7 Qb7 15.e4 Ng8 16.f4 Bf6 17.f5 (17.Qg4 ef4 18.Qf4 Bd4 19.Kh1 Ngf6+/-) 17...Kd8 (17...Bg5 18.Qe2+=) 18.Nd5 Ra8 (18...Bg5 19.Nf3+/-) 19.Qg4 Ne7 (19...Bg5 20.Qg3+/-) 20.Nb1 (20.Nf6!? gf6 21.Qg7+-) 20...Nd5+/- 21.ed5 Kc7 22.Nd2 Rag8 23.Ne4 Qc8 24.Rf2 Qd8 25.Raf1 Bg5 26.Ng5 (26.Qe2 Nf6+=) 26...Qg5= 27.Qg5 hg5 28.Rf3 Nf6 29.Bc1 g4 30.Rg3 Rh5 31.h3 gh3 (31...Rgh8 32.Kh2=+ (32.hg4? Rh1 33.Kf2 Rf1 34.Kf1 Rh1 35.Kf2 Rc1-+)) 32.Rh3 Rgh8 33.Rh5 Rh5 34.Be3 Ng4 35.Bd2 f6 36.Rf3 Kd7 37.Rg3 Rh4 38.Kf1 Ke7 39.Ke2 Kf7?? (39...Kd8=) 40.Kf3?? (better 40.Rh3 Rh3 41.gh3+-) 40...Nh6=+ 41.Bh6 Rh6 42.Kg4 (better 42.Rh3!?=) 42...Rh1-/+ 43.Rf3 Ra1 44.Rh3 Ra4 45.Kf3 Rb4 (better 45...Kg8-/+) 46.Rh8= a4 47.Rb8 a3 48.Ra8 (48.Rb6 Ra4 49.Rb7 Kg8 50.Rb8 Kh7-+) 48...Rb3 49.Ke4 Rb2 (better 49...Ke7=) 50.g4?? (50.Ra3!? Rg2 51.Ra6+=) 50...Rg2 (better 50...a2!?-+) 51.Kf3 (51.Ra3!? Rg4 52.Ke3 Rg3 53.Kd2=) 51...Ra2=+ 52.Ra6 (52.Ra7!? Kg8 53.Ke3-/+) 52...Ra1-/+ 53.Kg2 (53.Rb6?? a2 54.Rb7 Ke8 55.Rb8 Kd7 56.Rb7 Kc8-+) 53...a2 54.Ra7 Kg8 55.Kh2 Kh7 56.g5 fg5 57.f6 Kh8?? (better 57...Kg8 58.Rg7 Kf8-+) 58.f7= Rf1 59.Ra8 (59.Ra2 Rf7 60.Ra6 Rb7=) 59...Kh7=+ 60.Ra2 Rf7 61.Kg3 Rf4 (61...Kg6 62.Ra6 Rb7 63.Ra8=) 62.Ra6= Rd4 63.Ra3 (better 63.Rb6!? Rd3 64.Kg4=) 63...g6 (63...Kg6 64.Ra6-+) 64.Kf3 Kh6 65.Ke3 (65.Ra6 g4 66.Kg2 Rd3 67.Rb6 Rc3-/+) 65...Kh5 (better 65...Rf4!?-+) 66.Ra6=+ g4 67.Rb6 g3 68.Ra6 (68.Rd6?? Rf4 69.Re6 g2 70.Re5 Kg4-+) 68...g2 (68...Rf4 69.Ra1-/+) 69.Ra1 (better 69.Kf2=+) 69...Rg4?? (69...Kg4 70.Kf2 Kh3-+) 70.Rg1+= Kg5 (70...Rg3 71.Ke4 Rg4 72.Ke3 Rg3 73.Kd2 e4=) 71.b6+/- Kf5?? (better 71...Rg3 72.Kd2 Rf3+/-) 72.b7+- e4 (72...Rg3 73.Ke2 e4 74.de4 Ke4 75.b8Q Re3 76.Kf2+-) 73.b8Q ed3 74.Qc8 Kg5 75.Qg4! Kg4 76.Rg2 Kf5 77.Kd3 Ke5 (77...g5 78.Rf2 Kg6 79.Re2+-) 78.Ke3 (78.Rg6 Kf4 79.Rd6 Kf5 80.Re6 Kg4 81.Re3 Kf4 82.d6 Kg5 83.d7 Kh4 84.d8Q Kg4 85.Re4 Kf5 86.Qd5 Kf6 87.Re6 Kg7 88.Qd7 Kf8 89.Re8) 78...Kf6 (78...Kf5 79.Rf2 Ke5 80.Rf7+-) 79.Kf4 Kf7 80.Rg5 Kf6 81.Kg4 (81.Rg1 g5 82.Rg5 Kf7 83.Kf5 Kf8 84.Ke6 Ke8 85.Rg8) 81...Kg7 82.Kf4 Kf6 83.Rg3 Kf7 (83...g5 84.Rg5 Ke7 85.Kf5 Kf7 86.Rg4 Ke7 87.Rg7 Kd8 88.Ke6 Kc8 89.Kd6 Kb8 90.Kc6 Ka8 91.Kb6 Kb8 92.Rg8) 84.Kg5 (84.Kg5 Kg7 85.Rf3 Kh7 86.Rf7 Kh8 87.Kh6 Kg8 88.Kg6 Kh8 89.Rf8) 1-0. BeepBeepImAJeep - SSUM (1890), lichess.org, 2016.

5.b5 Be6 6.e3 Nf6 7.Nf3 Be7 8.Be2 0-0 9.0-0 e4 (9...h6 10.Nc3=) 10.Nd4 d5 (10...cb5 11.ab5 Nbd7 12.Nc3+=) 11.Ne6 (11.Nc3 Bd6+/-) 11...fe6+= 12.d3 (12.Nc3 Nbd7=) 12...ed3= 13.Bd3 Nbd7 14.Nd2 Nc5 15.Nf3 (15.Bc2 Qc7=) 15...Bd6 16.Be5 (16.Nd4 h5 17.Ba3 Nd3 18.Qd3 Ba3 19.Qa3 Qd7+=) 16...Nfe4 (16...Qc7 17.Bf6 Rf6 18.cd5 ed5 19.Bc2=+) 17.Bd6 (17.Be4 Ne4 18.cd5 ed5 19.bc6 bc6=) 17...Qd6=+ 18.cd5 (18.Be4 Ne4 19.cd5 cd5=+) 18...ed5 (18...cd5 19.Be4 Ne4 20.Rc1=+) 19.Be4= Ne4 20.bc6 bc6 21.Rc1 (21.Nd4 Nf6=) 21...Rf6 (21...Rab8 22.Nd4 c5 23.Nb5=) 22.Nd4= Rh6 (22...c5 23.Nb5 Qe5 24.f3=) 23.f4 (23.h3 Qd7=) 23...Qa3 (23...Qd7 24.f5=+) 24.Qb3 (better 24.Re1 Nc5 25.h3=) 24...Qe7?? (better 24...Qb3 25.Nb3 Rf6=) 25.Nf5 (25.Nc6!? Qe6 26.Rfd1 d4 27.Qe6 Re6 28.Rd4 Nf6+-) 25...Qh4?? (25...Qb4 26.Nh6 gh6+-) 26.Nh4 (26.Nh4 Nd2 27.Qb7+-) 1-0. BeepBeepImAJeep (2635) - Berthe (2370), Rated Bullet game, lichess.org, 2015.

5.Nd2 d5 6.a3. wlittle (2225) – tibo (2005), net–chess.com, 2004.

5.de5 Ne5 6.e3 Bg4 7.Qa4 Be7 8.Nc3 Bf6 9.Ne4 Bh5 10.b5 Bg6 11.Nf6 Nf6 12.Rd1 Qc7 13.Be2 (13.bc6 Nc6 14.Ne2 Bh5+/-) 13...Nfd7 (13...0-0 14.Nf3=) 14.Nf3 (14.f4!? Nc5 15.Qa3+=) 14...Nc5= 15.Qa3 Nf3 16.Bf3 0-0 17.0-0 Rab8 18.Bd4 (18.Qa7?? Ra8 19.b6 Qe7-+) 18...cb5 19.cb5 Rfe8 20.Bd5 (20.Qa7 Ra8 21.b6 Qc8 22.Bb7 Nb7-+) 20...Be4 21.Be4 (21.Qa7? Ra8 22.Bc5 Ra7 (22...dc5?! 23.Qa8 Ra8 24.Be4+=) 23.Ba7 Bd5 24.Rd5 b6 25.Bb6 Qb6-+) 21...Re4 22.Qa7 Rbe8 23.Rc1 Rh4 24.g3 (worse is 24.Bc5 dc5 25.f4 Rh5+/-) 24...Rh6 (24...Rh5 25.Rfd1+/-) 25.Bc5+- dc5 26.Qc5 Qd7 27.h4 Rh4?? (better is 27...Rd6+-) 28.Rfd1 (28.gh4?! Qg4 29.Kh2 Qh4 30.Kg2 Qg4 31.Kh1 Qh4 32.Kg1 Qg4 33.Kh1 Qh4 34.Kg2 Qg4 35.Kh1=) 28...Qh3 29.gh4 Qg4 30.Kf1 (30.Kf1 Qh3 31.Ke1 Qh1 32.Ke2 Qh4 33.Rc4+-) 1–0. Fournier,Frederic (2080) – Mat_elot (1720), Chess.com, 2012.

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

4.e3 a5 5.b5 Nf6 (---> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4 c6).

4.e3 Be6 (--> 3…Be6 4.e3 c6).

4.e3 Be6 5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 c6).

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

4.e3 Be7 5.Be2 Nf6 6.Nf3 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 c6).

4.e3 f5 5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 c6).

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

4.e3 Nf6 5.Be2 g6 6.Nf3 Bg7 7.0-0 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.0-0 c6).

4.e3 Nf6 5.Nf3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 c6).

4.e3 Nf6 5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 c6).

5.e3 Nd7 6.Be2 (6.Nc3 Ngf6=) 6...Ngf6 7.h3 Bf3 8.Bf3 Be7 (8...e4 9.Be2=) 9.a3 (9.Nc3 Nb6 10.d3 0-0=) 9...0-0 (9...d5 10.cd5 cd5 11.Nc3=) 10.0-0 d5 11.cd5 cd5 12.Nc3 Bd6 (better is 12...Nb6!?=) 13.Nd5+/- e4 14.Nf6 Nf6 15.Be2 Bc7 (15...Qe7 16.Qb1+/-) 16.d3 Qd6 17.g3 Rad8 18.de4 Qd1 (18...Qe6 19.Qc2 Be5 20.Be5 Qe5 21.Bd3+/-) 19.Rad1 Rd1 (better is 19...Ne4 20.Rd4 Ng5+-) 20.Rd1 (20.Bd1?! Ne4 21.Bc2 Nd2+-) 20...Ne4 21.Bf3 (21.Rd7!? Bb6+-) 21...Nd6 22.Be5 Rd8 23.Bd6 Bd6 24.Bb7 h6 25.b5 Rb8 (25...Kf8 26.a4+-) 26.Rd6 Rb7 27.a4 Kf8 28.Kg2 Ke7 29.Rc6 Kd7 30.f4 f6 31.Kf3 Ke7 (31...Kd8 32.e4+-) 32.Ke4 1–0. Fournier,Frederic (1975) – xyxy (1865), Active (5/0), 2004.

5.e3 e4 6.h3 ef3 (6...Bh5 7.g4 Bg6+= (worse is 7...ef3 8.gh5 Nd7 9.Qf3+=)) 7.hg4+/- fg2 8.Bg2 Qg5 9.f4 Qe7 10.Nc3 Nf6 11.g5 Nfd7 12.a3 a5 13.Kf2 (13.b5 h6+/-) 13...ab4 14.ab4 Ra1 15.Qa1 d5 16.cd5 Qb4 17.dc6 Nc6 18.Bc6 bc6 19.Qa8 Nb8?? (better is 19...Qb8 20.Ra1 Be7+/-) 20.Rb1 (20.Ba3 Qa3 21.Qb8 Kd7+-) 20...Qd6 (20...Bc5 21.Ke1 Be3+-) 21.Bc1 f6 (21...Be7 22.Ne4 0-0 23.Nd6 Bd6+-) 22.Rb8 Kf7 23.gf6 (better is 23.Rb7 Be7 24.Qh8 f5 25.Qh7 Kf8+-) 23...gf6 (23...Qf6 24.Ne4 Qh4 25.Ng3+-) 24.Qa7 (better is 24.Rd8!? Qe7+-) 24...Kg6 25.Ba3! Qd2 (25...Qa3 26.Qa3 Combination) 26.Ne2 Bg7 27.Rh8 Bh8 28.Bc1 Qd5 29.Qd4 Qh5 30.Qe4 Kf7 31.Qg2 Qb5 32.Qh3 c5 33.Qh5 Kg8 34.Qg4 Bg7 35.Qc8 Bf8 36.Qe6 Kg7 37.Qg4 Kf7 38.Qc8 h5?? 39.Qc7 Be7 0–1. Fournier,Frederic (1900) – torresdaniel (1870), Active (5/0), 2005.

4.a3 b6 5.e3 Be6 6.Nf3 Be7 7.Be2 Bf6 8.0-0 Nge7 9.d3 a6 10.Nbd2 b5 11.cb5 ab5 12.Ne4 Nd5 13.Nf6 Qf6 14.Qc2 Bd7 15.d4 ed4 16.Nd4 Nd4 17.Bd4 (17.ed4?! 0-0=) 17...Qg6 18.Qg6 hg6 19.Bf3 Be6 20.Bg7 Rg8 21.Bd4 c6 22.Rfc1 Bd7 (better is 22...Kd7!?+/-) 23.Bd5+- cd5 24.Bb2 (24.Bf6 g5+-) 24...f5 25.Rc7 Rc8 (25...Ke7 26.Rc2+/-) 26.Rac1 (26.Rc8!? Bc8 27.a4 ba4 28.Ra4 Bd7+-) 26...Rc7+/- 27.Rc7 Ke7 28.g3 Ke6 29.Kg2 g5 30.Kf3 g4 31.Kg2 Ra8 32.h3 gh3 33.Kh3 Rh8?? 34.Kg2 Ra8 35.Kf3 Rg8 36.Ra7 Rg4 37.Rc7 Re4?? 38.Ke2?? Rc4= 39.Rc4 bc4?? 40.Bc3 Bb5 41.Kf3 Kf7 42.Kf4 Kg6 43.f3 Bd7 44.e4 de4 45.fe4 fe4 46.Ke4 Bc6 47.Kd4 Kg5 48.Kc4 Kg4 49.b5 Bb7 50.Be1 Kf5 51.a4 Ke6 52.a5 Kd7 53.Bb4 Kc7 54.g4 Bg2 55.g5 Bf1 56.Kd5 Bb5 57.Bd6 Kd7 58.g6 Ba4 59.g7 Bb3 60.Kc5 Kc8 61.a6 Bg8 62.Kb6 Bd5 63.a7 Kd7 64.a8Q! Ba8 65.g8Q Kd6 66.Qa8 Ke7 67.Qd5 Ke8 68.Kc7 Kf8 69.Qd7 Kg8 70.Kd6 Kf8 71.Ke6 Kg8 72.Kf6 Kf8 73.Qd8 1–0. Fournier,Frederic (1950) – KPOV (1765), Active (5/5) ajedrez21.com, 2004.

4.a3 Bf5 5.e3 Nf6 6.Nf3 Be7 7.d4 e4 8.Nh4 Bg4 9.Be2 Be2 10.Qe2 d5 11.c5 0-0 12.g3 a6 13.0-0 Qd7 14.Kg2?? b6 15.Nc3? Qg4?? 16.Qg4+/- Ng4 17.Nd5 Rac8? 18.Nf5+- Rfe8?! 19.a4 Nf6 20.Nf4 Nb4= 21.c6 Nc6 22.d5= Ne5?? 23.Be5+- Rcd8 24.Rfd1 a5 25.Bc7 Rd7 26.Bb6 g6 27.Ne7 Ree7 28.Ba5 g5 29.d6 Re5 30.Bc3 Rc5 31.Ne2 Nd5 32.Bd4 Rc6 33.Be5 Nb4 34.Nc3 f5 35.Nb5 Kf7 36.Nd4 Ra6 37.Nf5 Ke6 38.Bc3 Nd5 39.Bb2 Rb6 40.Ba3 Nc3 41.Nd4 Ke5 42.f4 gf4 43.ef4 Kf6 44.Re1 Ra6 45.Nb5 Ra4 46.Nc3 (46.Nc3 Ra6 47.Ne4 Kg6 48.g4+-) 1–0. tschulz – Falcor, Schach Master, 2004.

4.a3 f6 5.Nf3 g5 6.e3 h5 7.Be2 e4?? 8.Ng5!+- fg5 9.Bh8 (9.Bh8 g4 10.Nc3+-) 1–0. Wall,Bill – Carradore,Carlos, San Antonio, 1995.

4.Qb3 Be6 5.Nf3 Be7 6.d4 (better 6.e3=) 6...b5?? (better 6...Nd4 7.Bd4 ed4 8.Nd4 a5=+) 7.e3?? (better 7.d5 Bf5 8.dc6 bc4 9.Qa4+-) 7...bc4 8.Bc4 d5 (8...ed4!? 9.Be6 fe6+/-) 9.Bb5+- ed4?? (better 9...Bd7 10.Bc6 Bc6 11.Ne5 Qd6+-) 10.Bc4 (better 10.Bc6 Bd7 11.Bd5+-) 10...Bb4-+ 11.Nbd2 (11.Bc3 dc4 12.Qa4 dc3 13.Qc6 Kf8 14.Qa4-+) 11...Rc8 (11...dc4!? 12.Qa4 Bd7 13.Ba3-+) 12.Qd3?? (12.Bb5!? Bd2 13.Kd2=) 12...f6 (better 12...dc4 13.Qe4 Nge7 14.Bd4-+) 13.g3?? (13.Bb5 Nge7 14.Nd4 Bd7 15.Nc6 Bc6 16.Bc6 Nc6=+) 13...Be7 (better 13...dc4 14.Qc2 c3 15.0-0-+) 14.Ba3?? (better 14.Bb5 Bd7 15.Bc6 Bc6 16.Nd4-/+) 14...Qd6 (14...dc4 15.Qe4 Bd5 16.Qg4-+) 15.Nh4 (better 15.Bd6 dc4 16.Qe4 Kf7+-) 15...g6 (better 15...dc4 16.Bd6 cd3 17.Be7 Nge7 18.e4-+) 16.Ng6 (better 16.Bd6!? dc4 17.Qe4 Kd7 18.Be7 Nge7+-) 16...f5 (better 16...dc4 17.Qe4 Qd5-+) 17.Qb3 (better 17.Bd6 dc4 18.Nc4 hg6 19.Be7 Nge7 20.0-0+-) 17…Ra8 1-0. Dolejs,Dan - Anderson,Bill, NZL NZCCA TT Class, 1999.

4.Qb3 f5 5.e3= Be6 (5...Nf6 6.d4=) 6.Nf3 (6.b5 Nb8=) 6...Nf6 (6...e4 7.Nd4 Nd4 8.Bd4=) 7.Nc3 h6 (7...e4 8.Ng5 Bg8 9.d4=) 8.d4 ed4 9.ed4 Bf7 (9...d5 10.c5+=) 10.d5 Ne5 11.Nd4 Be7 (11...Qe7!? 12.Nce2 f4+=) 12.Nf5 (12.Qa4 Qd7 13.Qd7 Kd7+-) 12...0-0+/- 13.Ne7 (better 13.Be2!?+/-) 13...Qe7+= 14.Be2 b6? (14...Nd3 15.Kf1 Bg6-/+ (15...Nb2?! 16.Qb2 Bg6 17.Qd2=)) 15.0-0+- Qd7 16.Rae1 Neg4 (16...a5 17.f4 Ng6 18.ba5 Ra5 19.Nb5+-) 17.Nb5 a6 18.Nd4 Rae8 19.Qc2 Ne5 20.Qf5 (20.f4 Neg4 21.Nf5 Bh5+-) 20...Bg6 (better 20...Qf5!? 21.Nf5 Bg6+-) 21.Qd7 Ned7 (21...Nfd7 22.Ne6 Rf7 23.Nc7+-) 22.Ne6 Rf7 23.Nc7 Re4 24.Na6?? (better 24.f3 Re2 25.Re2+-) 24...Rfe7+/- 25.Bf6 (25.Bd3 Re1 26.Bg6 R1e2+=) 25...Nf6 26.c5 (better 26.Bd3!? Re1 27.Bg6 Rf1 28.Kf1+=) 26...bc5=+ (worse 26...Re2 27.Re2 Re2 28.cb6 Ra2 29.b7+/-) 27.bc5 dc5?? (27...Re2 28.Re2 Re2 29.cd6 Ra2 30.Nb8=+) 28.Nc5?? (better 28.d6 Re8 29.Nc7 Re2 30.Ne8 Re8 31.Re8 Be8 32.Re1+/-) 28...Re2-/+ 29.Re2 Re2 30.Rd1 Rc2 31.Ne6 (31.Nb3 Ra2 32.d6 Bc2-+) 31...Bh5 (31...Nd5!? 32.h3 Bf7 33.Rd5 Be6 34.Rd8 Kf7-+) 32.f3-/+ Nd7 0-1. ClayPigeons (2205) - ZlajaM (2130), Rated Bullet game, lichess.org, 2021.

4.Qb3 Nf6 5.b5 Ne7 6.d4=+.

4.b5 Bd7?? 5.bc6+- Bc6 6.d4 f6 7.Nc3 Ne7 8.Nf3 d5 9.de5 fe5 10.Ne5 Qd6 11.Nc6 Qc6 12.cd5 Nd5 13.Qd5 Qd5 14.Nd5 0-0-0 15.0-0-0 g6 16.Bh8 Ba3 17.Bb2 Bc5 18.g3 Bf2 19.Ne7 (19.Ne7 Kb8 20.Rd8#) 1–0. pcmvr (1820) – BigLove, internet, 2005.

4.e3 f5 5.a3 Nf6 6.Nf3 Be6 7.Be2 Qd7 8.0-0 0-0-0 9.b5 Nb8 10.Qa4 a6 11.Nc3 ab5 12.Nb5 Na6 13.Qa5 Kb8 14.d3 c6?? (14...h6 15.Rfb1+/-) 15.Nc3 (better is 15.Ne5 Qe7 16.Nc6 bc6 17.Qb6 Qb7 18.Qd8 Qc8 19.Bf6 cb5 20.cb5 Qd8 21.Bd8+-) 15...Qc7+/- 16.Qc7 Nc7 17.Rfb1 d5 (17...e4 18.Nd4 c5 19.Ne6 Ne6 20.f3+/-) 18.cd5 Ncd5 19.Nd5 Bd5 20.Be5 Ka7 21.a4 Bd6 22.Bd6 Rd6 23.a5 Bf3 24.gf3 Nd5 25.a6 ba6+= 26.d4 Nc3?? 27.Ra6 1–0. Fournier,Frederic (1640) – pablov5577 (1770), Active (5/0), 2004.

5.b5 Na7 6.d4 c6 (6...ed4!? 7.Bd4 Nf6=) 7.de5+- cb5 8.ed6 (8.cb5 de5 9.Qd8 Kd8+-) 8...bc4+= 9.e4 b5 (9...Bd6?? 10.Bg7 (10.Bc4?! f6+-) 10...Be5 11.Qd8 Kd8 12.Be5+-) 10.e5 Nc6 (10...Be6 11.Nf3+=) 11.Nf3 (11.a4 Rb8+-) 11...f6 (11...Be6!?+=) 12.Nc3 Ne5?? (better 12...Rb8 13.Qd5 Na7+-) 13.Nb5 (13.Ne5 Qd6 14.Nb5 Qc5 15.Nc4 Ra6+-) 13...Nf3 14.Qf3 Rb8 (14...Ra6 15.Qe4 Ne7 16.de7 Qe7 17.Nc7 Kd7 18.Qe7 Be7 19.Na6 Ba6 20.0-0-0 Ke6+-) 15.Nc7 Kf7 (15...Qc7 16.dc7 Rb6 17.Bc4+-) 16.Bc4 Kg6 17.Qg3 Kh6 18.Qh4 Kg6 19.Bd3 Kf7 20.Qc4 Be6 21.Qe6 1–0. michaelbuss (2810) – kirklandlake (1670), ChessWorld.net, 2015.

5.b5 Na7 6.e3 c6 7.a4 cb5 8.cb5 Bd7 9.Nf3 Nc8 10.Be2 Bg4 11.0-0 Nf6 12.Nc3 Be7 13.d4 ed4 (13...e4!? 14.Nd2 Be2 15.Qe2 d5+=) 14.Nd4+/- Be2 15.Qe2 d5 16.Rfd1 Bc5 17.Nf3 (17.Nf5!? Rg8 18.Rac1+-) 17...0-0 18.Ba3 Ba3 19.Ra3 Qe7 20.Raa1 Ne4? (better is 20...Nb6=) 21.Nd5+- Qd6 22.Qc4 (better is 22.Qc2 Qg6 23.Ne5+-) 22...Ne7?? (22...Qe6 23.Qd4 Rb8 24.Nd2 Nd2 25.Rd2+-) 23.Ne7 (better is 23.Qe4 Nd5 24.Rd5+-) 23...Qe7+/- 24.Rd4 Nf6 25.Rad1 b6 26.Rd7?? (better is 26.Qd3+-) 26...Nd7-+ 27.Qc6 Rac8 28.Qd7 (28.Qd5-+) 28...Qd7 29.Rd7 Rc1 (29...Rc1 30.Rd1 Rd1 31.Ne1 Re1) 0–1. Fournier,Frederic (1765) – metodio, Active (2/0), 2005.

5.b5 Nd4 6.e3 Ne6 7.Nc3 b6 (7...Nf6 8.Be2=) 8.Nf3 Bb7 9.d4 ed4 10.ed4 Ne7 (10...Bf3!? 11.Qf3 Nd4=) 11.d5+/- Nc5 12.Be2 Qd7 13.0-0 Qf5 14.Nd4 Qg6 15.Qc2 (15.Bh5 Qg5+/-) 15...0-0-0 16.Qg6 hg6 17.Rad1 Nf5 (17...Re8 18.Rfe1+/-) 18.Nc6 (18.Bg4!?+-) 18...Bc6+/- 19.dc6 Re8 20.Rfe1 Ne4? (20...Rh4 21.Bf1 Ne6 22.Nd5+/-) 21.Nd5 (better 21.Bd3!? Nf6 22.Nd5+-) 21...f6?? (better 21...Nc5+/-) 22.Bf3+- 1-0. dannysmet (2060) - ThePenguinblu (2045), Rated Blitz game, lichess.org, 2021.

5.b5 Nd4 6.e3 Ne6 7.Nf3 Nf6 8.d4 ed4 9.ed4 Be7 10.g3 (10.d5 Nc5=) 10...0-0 11.Bg2 Nd7 (11...Re8 12.0-0=) 12.0-0= Bf6 13.Nc3 Nb6 Black plans a4 14.Qd3 White intends d5 14...a4 15.Rad1 Re8 16.Ne4 Be7 17.Ned2 c5 (17...c6 18.bc6 bc6 19.Rfe1=) 18.d5 Nf8 19.Rfe1 Bg4 20.h3 Bh5 21.Qe3 (21.Re2!?+=) 21...Qd7= 22.Bf1?? (better 22.Ba1=) 22…Bf6-+ (22...Bf6 23.Bf6 Re3 24.Re3 gf6-+) 0-1. jhonores (2250) - pinko_bey (2255), Rated Blitz game, lichess.org, 2020.

5.b5 Nd4 6.e3 Nf5 7.Nf3 b6 8.Be2 Bb7 9.0-0 Nf6 10.d3 h6 11.Nbd2 c5 12.e4 Nd4 13.Nd4 cd4 14.f4 Nd7 15.f5 (15.Bc1 Be7+=) 15...Nf6 16.Nf3 Be7 17.Bc1 Nd7 18.a4 Nc5 19.Bd2 Bf6 20.g4 Qe7 21.h3 Bh4 22.Be1 Bg5 23.Bf2 f6 24.Ng5 hg5 25.Kg2 Kd7 26.Rh1 Rh6 27.Rh2 Rah8 28.Qh1 Qf7 29.Bd1?? (29.Kf1 g6+=) 29...Kc7 (better is 29...Nd3 30.Kg1 Qc4-+) 30.Bc2–/+ Bc8 31.Kf3 Bb7 32.Ke2 R8h7 33.Qg2? g6 34.Rah1 gf5 35.ef5?? Bg2-+ 36.Rg2 Rh3 37.Rhg1 R7h6 38.Kf1 Nd3 39.Bd3 Rd3 40.Ke2 Qc4 41.Rd1 Rc3 42.Ke1 Qa4 43.Kf1 Rh1 44.Rg1 Qd1 45.Be1 Rg1 46.Kg1 Qe1 47.Kg2 Rc2 48.Kf3 Qe3 (48...e4) 0–1. Fournier,Frederic – master4m, Active (3/0), 2005.

5.e3 b5 6.cb5+/- ab5 7.Bb5 Bd7 8.Nf3 Na7 9.Bd7 Qd7 10.0-0 Be7 11.d3 Nf6 12.Nbd2 0-0 13.Qc2 c5 14.bc5 dc5 (better is 14...Rfc8 15.Nb3 Nc6+-) 15.Ne5 Qe6 16.Ndc4 Ng4 17.Ng4 Qg4 18.g3 Bh4?? (better is 18...Nc6+-) 19.Ne5 Qh3 20.Nf3 (better is 20.gh4 f6 21.Qc4 Kh8+-) 20...Bg3?? (20...Be7+-) 21.fg3 Nc6 (21...Rac8 22.Qc4 Qh5 23.Nh4+-) 22.Qc3 f6 23.Qc5 Na5 24.e4 Nb3 25.Qc4 Kh8 26.Qb3 Rab8 27.Qc3 Rbc8 28.Qd2 Qg4 29.d4 h5 30.e5 h4 31.Nh4 g5 32.Ng2 Rg8 33.ef6 Rg6 34.f7 Rf8 35.d5 Kh7 36.Qd3 Qh5 37.d6 Qg4 38.d7 Qh5 39.d8Q Rd8 (39...Rd8 40.f8Q Rf8 41.Rf8 Qh2 42.Kh2 Kh6 43.Rh8; 39...Qh6 40.Qf8! Qf8 41.Rf6 Qc5 42.Kh1 Qf5 43.Qf5 Kg7 44.f8Q Kh7 45.Qg6) 0–1. Fournier,Frederic (1825) – godtooro, Active, 2007.

5.e3 b6 6.Nf3 Nf6 7.Qc2 Bg4 8.Be2 Be7 9.0-0 h6 10.Re1 0-0 11.Nc3 Na7 12.d4 ed4 13.ed4 c6 14.h3 Bh5 15.Ne4 Bg6 16.Bd3 d5 17.Nf6 Bf6 18.Bg6 fg6 19.cd5 Qd5 20.Qg6 Nb5 21.Qe4 Qe4 22.Re4 Rfe8 23.Rae1 c5?? (better is 23...Re4 24.Re4 c5+/-) 24.Re8+- Re8 25.Re8 Kf7 26.Rb8 cd4 27.Rb6 Nc3 28.Ra6 d3 (28...Ke7 29.Rc6 Kd7 30.Rc4+-) 29.Bc3 (better is 29.Rf6!? gf6 30.Bc3 Ke6+-) 29...Bc3 30.b5 (30.Rd6!? d2+-) 30...Ke7 31.b6 d2 32.Nd2! Bd2 33.b7 Bf4 34.Ra8 Kd7 35.b8Q Bb8 36.Rb8 Kc7 37.Rb1 1–0. Fournier,Frederic – eolo, Active, 2007.

5.e3 b6 6.Nf3 Nf6 7.Be2 Be7 8.0-0 0-0 9.d3 Bg4 10.Nbd2 h5 11.h3 Bf3? (better is 11...Bf5!?+=) 12.Bf3+- (12.Nf3?! Qd7+/-; 12.gf3?! Qd7 13.Kh2 Rfe8=) 12...d5 (better is 12...Qd7+-) 13.cd5 Nd5 (13...Na7+-) 14.Bh5 (better is 14.Qb3!? Bb4 15.ab4 Ndb4+-) 14...Rb8 (14...Qd6+-) 15.Qb3 g6? (15...Bf6+-) 16.Bf3 e4 (16...Ndb4 17.ab4 Nb4 18.Be5 Nd3 19.Bc7 Qc7 20.Qd3+-) 17.Be4 (worse is 17.Ne4 Na7+-) 17...Bf6 (17...Bb4 18.Bd5 Bd2 19.Bc6+-) 18.Bf6 Qf6 19.Bd5 Ne5 (19...Ne7 20.Bf3+-) 20.d4 Nd7 21.Nf3 (21.Rac1 c5 22.Ne4 Qe7 23.dc5 bc5 24.Nc5 Nc5 25.Rc5 Qc5 26.bc5 Rb3 27.Bb3 Rc8+-) 21...Rbd8 (21...c6 22.Be4+-) 22.Rac1 c5 23.bc5 bc5 24.dc5 Ne5 25.Ne5 Qe5 26.Rfd1 a5 (26...Rb8 27.Qc3 Qc3 28.Rc3+-) 27.c6 Rc8 28.Qc4 Rfd8 (28...Qc7 29.Rb1 Qe7 30.Rb7+-) 29.Qe4 (better is 29.Bf7 Kf8 30.Rd8 Rd8+-) 29...Qe4 30.Be4 Rd1 31.Rd1 Rc6 (31...f5 32.Bf3 Kf7 33.Rd7 Ke8+-) 32.Bc6 Kg7 33.Rd7 1–0. Fournier,Frederic (1925) – carlosmatador, Active (5/0), 2005.

5.e3 Be6 6.d3 Nf6 7.Nd2 Ne7 8.Ngf3 Ng6 9.Be2 Be7 10.0-0 0-0 11.e4 Nf4 12.Nb3 Ne2 13.Qe2 Bg4 14.h3 Bh5 15.Qe3 Bg6 16.Rfe1 h6 17.d4 Be4 18.de5 Bf3? (18...de5!? 19.Rad1 Qc8+=) 19.Qf3 (19.gf3?! de5 20.f4 e4=) 19...de5 20.Be5 Nh7? (better is 20...c6!?+/-) 21.Rad1+- Qc8 22.Qg3 (better is 22.Bg7!? Kg7 23.Re7 Ng5+-) 22...Bf6 23.Bc7 Ng5 (23...Re8 24.Nc5+-) 24.c5 (24.Nc5 Re8+-) 24...Qf5 (24...Re8 25.Nd2+-) 25.Nd4 (25.Na5 Ne4 26.Qf4 Qf4 27.Bf4 Nc3+-) 25...Qc8 (25...Bd4!? 26.Rd4 Rfe8+-) 26.Be5 Be5 27.Qe5 Re8 28.Qe8 Qe8 29.Re8 Re8 30.Nf5 Re5 31.Nd6 Re7 32.Nf5 Re5 33.Ne3 Ne4 34.Rd7 a5 35.Rb7 ab4 36.ab4 Nc3 37.c6 Kf8 38.c7 (38.c7 Re8 39.Rb8+-) 1–0. Fournier,Frederic (1635) – kkike, Active, 2007.

5.e3 Be6 6.Nf3 f6 7.d3 f5 8.Nbd2 Nf6 9.Be2 Be7 10.0-0 Rg8 (10...0-0!?+=) 11.d4+/- ed4 12.Nd4 Bd7 13.Bf3 Ne5 (better is 13...Nd4!? 14.Bd4 Qb8+/-) 14.Bb7+- Rb8 (14...Ra7 15.Bd5 Nd5 16.cd5 Qa8+-) 15.Ba6 c5 16.N4f3 (16.Nc2 Qb6 17.b5 Be6+-) 16...cb4 (better is 16...Nd3 17.Bc3 cb4 18.ab4 Nb4+-) 17.Ne5 (17.Be5?! de5 18.Ne5 ba3 19.Nd7 Kd7 20.Qa4 Ke6+-) 17...de5 18.ab4 Rb4 19.Be5 Ng4 20.Bc3 Qc7 21.g3 Rb6? (21...Rb8+-) 22.Ba5 Bd6 23.Bb6 Qb6 24.Bb5! Bb5 25.cb5 Qb5 26.Ra8 (26.Nf3!? Qb8+-) 26...Kf7 27.Rg8 Kg8 28.Qb3 Qb3 29.Nb3 Bb4 30.Nd4 h6 31.Nf5 Kh7 32.Nd4 Ne5 33.Rb1 Nf3 34.Kg2 Nd4 35.ed4 Bd6 36.d5 Kg6 37.f4 Kf5 38.Kf3 g5 39.g4 Kf6 40.Rb6 Ke7 41.Rd6! Kd6 42.fg5 hg5 43.Ke4 Ke7 44.Kf5 Kd6 45.Kg5 Kd5 46.Kf6 Kd6 47.g5 Kd7 48.Kf7 Kd6 49.g6 Ke5 50.g7 Kf5 51.g8Q Kf4 52.Qg6 Ke5 53.Qe6 Kf4 54.h3 Kg5 55.Qg4 Kh6 56.Qg6 1–0. Fournier,Frederic – strategos, Active, 2007.

5.e3 f5 6.Nf3 (6.d4 e4=) 6...g5 (6...e4 7.Nd4=) 7.b5 (7.d4 g4 8.Nfd2 ed4+=) 7...ab5= 8.cb5 Na7 (8...Na5 9.d4 Bg7 10.Be2=) 9.Ne5+= Nf6 (9...de5 10.Qh5 Double attack (10.Qh5 Decoy)) 10.Nf3+- h6 (10...g4 11.Nd4+-) 11.Qb3 (11.Nd4 Bg7+-) 11...Qe7+- 12.Bc4 Rh7 (12...Bg7 13.Nc3+-) 13.0-0+- c6 (13...Bg7 14.Nc3+-) 14.b6 Nb5 (14...d5 15.Be2 (15.ba7?! dc4 16.Qc4 Nd5+-) 15...Nb5 16.Bb5 cb5 17.Rc1+-) 15.a4 (15.Rc1 Bd7+-) 15...g4 (15...d5 16.Bb5 cb5 17.Rc1+-) 16.Ne1 (16.Nh4 d5 17.Bb5 cb5+-) 16...d5 17.Bb5 cb5 18.Qb5 Bd7 19.Qb3 Ne4 (19...Bg7 20.Bf6 Qf6 21.d4+-) 20.f3 (20.Nd3 Be6+-) 20...Nf6? (20...Nc5!? 21.Qa2 Qd6+-) 21.a5 (21.fg4 Ng4 22.Qd5 Qd6 23.Qd6 Bd6+-) 21...Bc6 (21...g3 22.h3+-) 22.Nd3 (22.a6 ba6 23.Qc3 Bb5 24.Qf6 Qf6 25.Bf6 Bf1 26.Kf1 Bc5+-) 22...h5 (22...g3 23.h3+-) 23.fg4 (23.Ne5 Rc8+-) 23...hg4 24.Rf5 Nd7 25.g3 Rh2 26.Rf8! (26.Kh2?! Qh7 27.Kg1 Qf5+-) 26...Qf8 (26...Nf8 27.Kh2 Zwischenzug; 26...Qf8 27.Kh2 Zwischenzug; 26...Kf8 27.Kh2 Zwischenzug) 27.Kh2 Qh6? (27...Nc5 28.Qb4 Qh6 29.Kg1 Nd3=) 28.Kg1 Qh3 29.Nf2 Qg3 30.Kf1 0-0-0 (30...Nc5 31.Qb4 Qf2 32.Kf2 Nd3 33.Kg3 Nb4 34.Bc3+-) 31.Nc3 (31.Bg7 d4 32.Qc4 Qg2 33.Ke1+=) 31...Rf8 32.Ncd1 d4?? (32...Qh2 33.Ba3 g3 34.Bf8 g2 35.Ke2 g1Q=+) 33.Ke2?? (better 33.Ba3 de3 34.Qe3 (34.de3?! Qg2 35.Ke2 Rd8+-) 34...Bb5 35.d3 Rf2 36.Qf2 Bd3 37.Ke1 Qe5 38.Qe3 Qa5 39.Kf2 Qf5 40.Kg3 Qf3 41.Qf3 gf3 42.Ne3 Nb6 43.Rc1 Kb8 44.Bd6 Ka8 45.Ra1 Ba6 46.Kf3+-) 33...Qf3 34.Ke1 g3 (34...g3 35.Bd4 g2-+ (35...gf2?! 36.Nf2 Kd8 37.Qd3 Qf2 38.Kd1–/+)) 0–1. jaddwarrior (1860) – tigzarit (1805), ChessWorld.net, 2013.

5.e3 Nf6 6.Nf3 Be7 7.Be2 Be6 8.0-0 d5 (8...Bg4 9.d4=) 9.cd5 (9.Ne5 Ne5 10.Be5 dc4+=) 9...Bd5 (9...Qd5 10.d4 e4 11.Ne5 Ne5 12.de5 Qd1 13.Rd1=) 10.Nc3 (10.Ne5 0-0+/-) 10...Be6 11.Qc2 Bd6 12.Rad1 0-0 13.d4 ed4 14.Nd4 Nd4 15.Rd4 Qe7 16.Rfd1 Be5 17.R4d2 Rad8 18.Rd8 Rd8 19.Rd8 Qd8 20.Qd3 Qd3 21.Bd3 c6 22.Na4 Bb2 23.Nb2 b5 24.f3 Nd5 25.Kf2 h6 26.g3 g5 27.e4 Nc3 28.Ke3 Kg7 29.f4 f6 30.Kd4 Na4? (better is 30...Na2+/-) 31.Na4+- ba4 32.Ba6 Bd7 33.Bb7 gf4 34.gf4 Kg6 (34...Kf7 35.f5+-) 35.Kc5 Kh5 36.Bc6 Bc6 (36...Bc8+-) 37.Kc6 Kg4 38.e5 fe5 39.fe5 Kf5 40.b5 Ke5 41.b6 (41.b6 Kf5 42.b7+-) 1–0. Fournier,Frederic (1775) – rix (1725), Active (5/0), 2004.

5.d3 f5 6.Nf3 Nf6 7.g3 Be7 8.Bg2 0-0 9.Ng5 Bd7 (9...Bc8 10.0-0=) 10.Qb3 (10.b5!? Nd4 11.Bd4 ed4 12.Bb7+=) 10...Qe8= 11.c5 (11.b5 Nd8=) 11...Kh8=+ 12.cd6 cd6 13.Ne6?? (13.b5 Nd8 14.Nc3 d5=+) 13...Be6?? (better 13...Qf7 14.Nd4 ed4 15.Qf7 Rf7-+) 14.Qe6= Nd7 15.0-0 Rf6 16.Qd5 Nb6 17.Qb3 Qh5 18.Nc3 (18.b5 Nd8 19.e3 Rh6+=) 18...Nd4 (18...f4 19.Ne4 Rh6 20.h3=+) 19.Qd1 Rh6 20.h3 Rc8 21.e3 Nc6 (21...Rc3 22.ed4 Qd1 23.Rad1 Rc2+/-) 22.Qh5+/- Rh5 23.Rac1 f4 (23...a6 24.f4+/-) 24.Kh2 (24.b5 Nd8+-) 24...Rf8 25.Nd5?? (25.Be4 Bf6+/-) 25...Nd5?? (better 25...f3 26.Ne7 fg2 (worse 26...Ne7 27.Bh1+=) 27.Kg2 Ne7-/+) 26.Bd5+/- Rhf5 (26...fe3 27.fe3 Rf1 28.Rf1 Rh6+-) 27.Kg2 (27.gf4 ef4 28.e4 Bf6 29.Bf6 R5f6 30.Bc6 bc6 31.Rc6 h6+-) 27...Nd8? (27...Bg5 28.gf4 ef4 29.Bc6 fe3 30.fe3 (30.Bb7?! e2 31.Bd4 ef1R 32.Rf1 Bf6=) 30...Rf1 31.Rf1 Rf1 32.Kf1 bc6 33.Ke2+=) 28.Rc7 (28.g4 R5f6+-) 28...Bg5? (28...fe3 A) 29.Re7?! e2 (29...Rf2? 30.Rf2 Rf2 31.Kg1+-) 30.Rg1 Rf2 31.Kh1 e1Q 32.Re1 Rb2=; B) 29.f3 Bg5 30.h4+/- (30.Bb7?! Nb7 31.Rb7 e2=)) 29.g4 (better 29.gf4!? Bf6 30.fe5 Be5 31.Be5 de5 32.Bb7 Nb7 33.Rb7+-) 29...R5f6+/- 30.e4 (better 30.ef4!? Bf4 31.Rd7+/- (31.Bb7?! Be3=)) 30...f3= 31.Kh1 (31.Kg1 Rh6 32.Bc1 (32.Bb7 Ne6 33.Bc1 Rh3 34.Bg5 Nd4-+) 32...Bc1 33.Rfc1 Rh3 34.Bb7+=) 31...Ne6 (31...Rh6 32.Kh2 Bf4 33.Kg1 Rh3 34.Bb7 Ne6-+) 32.Be6+/- Re6 33.Rb7 h5? (33...Rh6 34.Kg1 Rh3=) 34.Rg1 (34.gh5 Rh6 35.Bc1 Rh5+/-) 34...Rh6 35.gh5 (35.Ra7 Rc8 36.gh5 Rh5 37.Rg3+=) 35...Rh5= 36.Rg3 Bh4 37.Rgg7?? (better 37.Rbg7 Bg3 38.Rg3-/+) 37...Bf2-+ 38.Kh2 Rf4 39.Rgc7 (39.Rh7 Rh7 40.Rb8 Kg7 41.Rb7 Rf7 42.Rc7 Rc7 43.Bc3 Rc3 44.b5 Rc1 45.b6 Rh1 46.Kh1 Rh3) 39...Rh3!! 40.Kh3 (40.Kh3 Rh4 Mate attack) 40…Rh4 0-1. pacalmisu (2450) - bobancio (2500), Rated Blitz game, lichess.org, 2016.

5.e3 d5 6.cd5 Bd5 7.Nc3 f6 (7...Be6 8.Nf3 a6 9.b5 ab5 10.Bb5+=) 8.Nd5+= Qd5 9.Nf3 Bd6 10.Rc1 Nge7 11.Bc4 Qc4?? (better is 11...Qe4+=) 12.Rc4+- 0-0 13.0-0 b5 14.Rc1 a5 15.d4 ab4 16.de5 fe5 17.ab4 e4 (17...Kh8 18.Qb3 Ra4 19.Qe6 Rb4 20.Ba3+-) 18.Nd2 Bb4 (18...Ra4 19.Ra1 Ra1 20.Qa1 Nb4 21.Ne4+-) 19.Ne4 Ra2 (19...Rf5+-) 20.Qb3 (20.Qb3 Kh8 21.Qa2+-) 1–0. Fournier,Frederic – guakili, Partie evaluee, 6m + 0s, 2007.

5.e3 f5 6.d4 (6.b5 Na5 7.Qa4 b6 8.d4 ed4 9.Bd4 a6 10.Nf3 Ne7 11.ba6+=) 6...Nge7?? (6...ed4 7.ed4 Qe7 8.Qe2= d5 9.Nh3 Nf6 10.Nf4 Bf7 11.cd5=) 7.de5?? (better 7.d5+-) 7...de5 8.Qd8 Rd8 9.Be5?? (9.b5 Na5 10.Be5 Nc4 11.Bc7 Rd7+=) 9...Ng6?? (better 9...Ne5 10.Nd2 N7c6-+) 10.Bc3+- (10.Bc7 Rd7 11.b5 Nb4 (11...Rc7?! 12.bc6 Rc6 13.Nd2=) 12.ab4 Bb4 13.Ke2 Bc4 (worse 13...Rc7 14.Kd1+=) 14.Kf3 Bf1-+) 10...Be7 (10...a5!? 11.b5 Nce5 12.Ba5 b6+-) 11.Bg7 Bf6?? (better 11...Rg8 12.Bc3 f4+-) 12.Bh8 (better 12.Bf6 a5 13.Bd8 Kd8 14.b5+-) 12...Nh8 13.Ra2 Nf7 14.Rc2 Ne7 15.Nf3 Ng6 16.Be2 Nd6 17.0-0 Ne4 18.Rd1 Rd1 19.Bd1 c6 20.Nd4 Bf7 (20...Bd4 21.ed4 Kd8 22.g3+-) 21.Nf5 Ne5 (21...Nh4 22.Nh4 Bh4 23.f3+-) 22.f3 Nc4 (22...Bc4 23.fe4 Bd3 24.Rc1+-) 23.fe4 Bg6 (23...Kd7+-) 24.Rc4 (24.Rc4 Kd7 25.Rc2+-) 1–0. Nilsson,Jonas (1995) – Vestergaard,Simon, Esbjerg DEN, 2007.

6.b5 A) 6...Nb8 7.d4 (7.Nf3; 7.Nc3) 7...Nbd7 8.Nf3 e4 9.Nfd2 c6 10.Nc3 d5 11.Be2=; B) 6...Ne7 7.d4 (7.Nf3 a6 8.Be2 ab5 9.cb5 Ned5 10.d4 e4 11.Nfd2=; 7.Be2 a6 8.Nf3 ab5 9.cb5 Ned5 10.d4 e4 11.Nfd2=) 7...Ng6 8.Nd2 a6 9.ba6 Ra6 10.Ngf3 ed4 11.Nd4=.

6.d3 Be7 7.Nf3 0-0 8.Be2 e4 9.de4 Ne4 10.Nbd2 Nd2 11.Qd2 d5 (11...Bf6 12.0-0=) 12.cd5 Bd5 13.Rd1 Bb3?? (13...Be6 14.b5 Qd2 15.Rd2+=) 14.Qd8 (better is 14.Qc3 Bf6 15.Qb3+-) 14...Rad8+= 15.Rd8 Rd8 16.0-0 h6 17.h3 Bd6 18.Nd4 Nd4 19.Bd4 b6 20.Bd1 (20.b5!?+=) 20...Bc4+= 21.Re1 c5 22.bc5 bc5 23.Bc3 Ba6 24.Be2 c4 25.Rc1 Ba3 26.Rc2?? f6?? 27.Bd4?? Be7 28.Ba7 Ra8 29.Bd4 Bb5 30.Bc4+/- (30.Bc4 Bc4 31.Rc4+/-; 30.Rc4?! Bc4 31.Bc4 Kf8+=) 1–0. Fournier,Frederic – Estefania2007, Active, 2007.

6.Nf3 e4 7.b5 Na5 8.Ng5 Nc4 9.Ne6 Nb2 10.Nd8 Nd1 11.Nb7=.

6.Nf3 e4 7.Nd4 Nd4 8.Bd4 d5 9.c5 Ng4 10.h3 Nf6 11.Be2 Be7 12.d3 ed3 13.Bd3+= Ne4 14.Bg7 Rg8=+ 15.Bh6 Rg2–/+ 16.Qf3?? Rf2-+ 17.Qf4 Rf4 18.ef4 Ng3 19.Rg1 Bh4 20.Kd2 Nf5 21.Rg8 Ke7 22.Rd8 Rd8 23.Nc3?? Nd4 24.Rb1 Rg8 25.Ke3? Rg3-+ 26.Kd4?? Rh3 27.Bg5+- Bg5 28.fg5 Kf8? 29.Bb5 c6 30.Ba4 Rg3 31.Rh1 Rg4+= 32.Ke3?? Kg7?? 33.Bd1 d4 34.Kd3 Rf4?? 35.Ne2+- Bf5 36.Kd2 Rf2 37.Ke1 Rf3 38.Nd4 Re3 39.Kf2 Re5 40.Nf5 Rf5 41.Ke3 Rg5 42.Bc2 Rg3 43.Kf4 Rc3 44.Rh7 Kg8 45.Bf5 Ra3 46.Kg5 Ra4?? 47.Rh4 Ra3 48.Bc8 b6 49.cb6 Rg3? 50.Rg4 Re3 51.Kf6 Kf8 52.Rd4 Kg8 53.Rd8 Kh7 54.Bf5 Kh6 55.Rh8# 1–0. TresHuevos – rip, Live Game Caissa's Web, 2005.

6.Nf3 e4 7.Ng5 Bf5 8.d3 ed3 9.Bd3 Bd3 10.Qd3 a5 11.b5=.

6.Nf3 Be7 7.b5 Na5 (better is 7...Nb8=) 8.Be2 (better is 8.Qa4!? b6 9.d4=) 8...Nc4–/+ 9.Bc4 (9.Bc3 Qd7–/+) 9...Bc4-+ 10.Nc3 0-0 (10...Bd3 11.Qb3-+) 11.d3 Be6 12.0-0 (12.d4 e4 13.Ng5 d5-+) 12...Re8 (12...a6 13.Ng5–/+) 13.a4 (13.Ng5 Bd7–/+) 13...b6 (13...a6 14.Ng5–/+) 14.e4 Nd7 (14...a6 15.d4 ed4 16.Nd4–/+) 15.Re1 (15.d4 a6–/+) 15...f5 (15...a6 16.d4–/+) 16.d4 (16.ef5 Bf5 17.d4 Bf6+=) 16...fe4–/+ 17.Ne4 Bg4 (17...d5!? 18.Qb3 Nf8–/+) 18.Re3 (18.de5!? Bf3 19.Qf3 Ne5 20.Qb3 Kh8 21.Be5 de5 22.Rad1+=) 18...d5 19.Qb3 Kh8 (better is 19...Be6!?=) 20.Qd5+/- ½–½. Lourenco,Eva – Punsalan,Vyanla M, 123rd New Zealand Championship Open, 2016.

6.Nf3 Bg4 7.b5 Nb8 8.Be2 a6 9.0-0 ab5 10.cb5 Nbd7 11.d3=.

6.Nf3 g6 7.Be2 Bg7 8.d3 0-0 9.Nbd2 Ne7 10.0-0 a5 11.b5 b6 12.a4 Ne8 13.d4 f6 14.de5 fe5 15.Qc2 Nf5 16.Ne4 Nf6 17.Nf6 Qf6 18.Rad1 Rad8 19.Bd3 Nh4 20.Nh4 Qh4 21.Be4 Bf5 22.Bf5 Rf5 23.g3 Qh3 24.Qe4 Rdf8 25.Qg2 Qh5?? (better is 25...Qg4+=) 26.g4+- (26.g4 Qh4 27.gf5 Rf5 28.Qd5 Kf8 29.f4 ef4 30.Bg7 Kg7 31.Qd4 Qf6 32.Rf4 Qd4 33.Rdd4+-) 1–0. Fournier,Frederic (1670) – TORRE2 (1710), Partie amicale, 5m + 0s, 2008.

5.e3 Nf6 6.d4 g6 (better is 6...e4=) 7.b5+/- ed4 8.bc6 de3 9.fe3 bc6 10.Nh3 Bg7 11.Be2 Rb8 12.Qc1 0-0 13.0-0 Re8 14.Bf3 Bd7 15.Nf4 Qe7 16.Bd4 c5 17.Nd5 Nd5 18.Bd5 Be6 19.Be6 Qe6 20.Bg7 Kg7 21.Qc3 Kh6 22.Rf3 Qe5 23.Qe5 Re5 24.Nc3 Rb3 25.e4! fe4 26.Ne4! Rb2 (26...Re4 27.Rh3 Double attack (27.Rb3 Discovered attack)) 27.Rf2 Rb8 28.Nf6 Rb3?? (better is 28...Re6+-) 29.Ng4 (29.Ng4 Kg7 30.Ne5 de5 31.Re1+-) 1–0. Fournier,Frederic – ahmdnjr12512 (2470), Active (4/0), 2004.

5.e3 Nf6 6.Nf3 Be7 7.d3 0-0 8.Be2 Qe8 9.Nbd2 Nd8 10.0-0 Ne6 11.h3 f4 12.ef4 (12.e4!?=) 12...Nf4–/+ 13.Ne4?? (better is 13.Ne1–/+) 13...Ne4-+ 14.de4 Qg6 (14...Ne2?! 15.Qe2 Qg6 16.Kh1+=) 15.g3 Bh3 16.Re1 (16.c5 Qe4 17.gf4 Rf4 18.Bd3 Qf3 19.Qf3 Rf3 20.Be4-+) 16...Nh5 (16...Ne2 17.Qe2 Bg4 18.Ne5 de5-+ (18...Be2 19.Ng6 hg6 20.Re2+/-)) 17.Bf1? (17.Ne5 Qe4 18.Bf3 Qf5+/-) 17...Ng3?? (better is 17...Be6-+) 18.Bh3= Ne4 19.Kf1?? (19.Bg2 Nf6=) 19...Qh5 (better is 19...Rf3 20.Qd5 Kh8 21.Qe4 Qg3-+ (21...Rh3?! 22.Qg6 hg6 23.Kg2-+)) 20.Bg2+= Ng5? (better is 20...Nf6!?+=) 21.Ng5+- Qg5 22.Bc1 (better is 22.Bb7!? Rab8 23.Bd5 Kh8 24.Qa4+/-) 22...Qh4+= The pawn on f2 gets attacked 23.Be3 (23.Re2 c6 24.Qd3 Rf7+=) 23...Bg5 (23...Qc4!? 24.Qe2 Qe2 25.Ke2 c6+=) 24.Bg5?? (better is 24.Qd5 Rf7 25.Qe4 Qe4 26.Be4 Be3 27.Re3+=) 24…Qf2 0–1. Fournier,Frederic – Guest1933125, Partie amicale, 5m + 0s, 2008.

5.e3 Nf6 6.Nf3 Be7 7.d4 e4 8.Nfd2 (8.d5 Nb8 9.Nd4 a5+=) 8...0-0 9.Be2 Bd7 10.0-0 Qe8 11.Nc3 a6 12.Rc1 g5 (12...Nd8 13.f3 Qg6 14.Qc2+=) 13.b5 Nd8 14.a4 Qg6 15.Qc2 Nf7 16.Nd5 Nd5 17.cd5 Rac8 (17...Rfc8!?+=) 18.ba6+/- ba6 19.Ba6 Ra8 20.Bb5 Bb5 21.ab5 f4 (better 21...Rfb8!?+/-) 22.Qc7+- f3?? (22...Bf6+-) 23.Qe7 g4 (23...Rae8 24.Qd7+-) 24.Qe4 (24.Ne4 Rfb8+-) 24...Qh5 (24...Rfb8 25.Qg6 hg6 26.Ra1 Ra1 27.Ba1 Rb5 28.gf3 gf3 29.e4+-) 25.Qe6 (better 25.gf3 gf3 26.Kh1 Rfe8+-) 25...Rae8 26.Qd7 Ng5 (26...fg2 27.Kg2 Qd5 28.Kg3 Rd8 29.Qg4 Kh8+-) 27.h3 (better 27.Rc7 Qg6 28.Qg4 fg2 29.Qg2+-) 27...fg2 28.Kg2 (28.Qg4 gf1R 29.Rf1+- (29.Kf1?! Qh3 30.Qh3 Nh3+=; worse 29.Nf1 Qg6 30.Ng3 h5 31.Qh5 Qh5 32.Nh5 Nh3 33.Kg2 Rf2 34.Kh3 Re3 35.Kg4 Rb2+=)) 28...Qh3 29.Kg1 Re7?? (29...Rd8 30.Qe7 Qh4=) 30.Qe7+- Nf3 31.Nf3 gf3 32.Qg5 (better 32.Qe6 Qe6 33.de6+-) 32...Kh8 33.Rc2 (better 33.Ra1 Rg8 34.Ra8 Ra8 35.Qf6 Kg8 36.Qe6 Qe6 37.de6+-) 33...Rg8= 34.Qg3 Rg3 35.fg3 Qg3 36.Kh1 Qh3 37.Kg1 Qg4 38.Kh1 Qh5?? (better 38...Qh3 39.Kg1 Qg4 40.Kh1 Qh3=) 39.Kg1 (better 39.Rh2 Qd5 40.Rff2+-) 39...Qg6-+ 40.Kf2 Qc2 41.Kf3 Qb2 42.Rf2 (42.b6 Qb5 43.Ra1 Qd5 44.Kf4 Qb7-+) 42...Qb5 43.e4 (43.Ke4 Qb1 44.Kf4 h5-+) 43...Qe8 (43...Qd3!? 44.Kf4-+) 44.Kf4 Qh5 45.Ke3 Qh3 46.Rf3 Qh1 47.Rf8 Kg7 48.Rf3 (48.Rb8 h5-+) 48...Qc1 49.Kf2 (49.Kd3 h5 50.Re3 Qf1 51.Kc3 h4-+) 49...Qd2 50.Kg3 Qd4 51.Rf4 (51.Kf4 h5-+) 51...Qe5 (better 51...Qe3 52.Rf3 Qe4 53.Kf2-+) 52.Kf3 Kg6 (better 52...h5!? 53.Ke3-+) 53.Rg4 Kh5 54.Rf4 (54.Rg1-+) 54…Qc3 (54...Qc3 55.Ke2 Qd4-+) 0-1. jhonores (2205) - vr2199 (2035), Hourly SuperBlitz Arena, lichess.org, 2020.

5.d3 Be7 6.Nf3 0-0 7.h3 (7.e3 a5 8.b5 Nb8=) 7...Qe8 8.e4 Nd8 (8...Be6 9.Be2=) 9.Nc3 c6 (9...a5 10.d4=+) 10.Be2 Ne6 11.0-0 Nf4 12.Bc1 Ng6 (12...Ne2 13.Qe2 Be6 14.d4=) 13.Nh2 (13.d4 ed4 14.Qd4 a5+=) 13...Be6 14.Ng4 Nd7 15.f4 (15.d4 ed4 16.Qd4 Bg4 17.hg4 Bf6=+) 15...ef4=+ 16.Bf4 Nf4 17.Rf4 Bg5 18.Rf1 f5 19.Nh2 (19.Nf2 Be3=+) 19...Qg6–/+ 20.ef5 Bf5 21.Bh5 Be3 (21...Qe6 22.Re1 Qf6 23.Ne4 Be4 24.de4–/+) 22.Kh1=+ Qh6 (22...Qe6!?=+) 23.Bg4= Qg6 24.Bf5 Rf5 25.Rf5 Qf5 26.Ne4 Qe6 (26...Bf4 27.Qg4 Qg4 28.Ng4= (worse 28.hg4 d5 29.Nc3 a5-+)) 27.Qg4 Re8 (27...Qe7 28.Re1 Ne5 29.Qg3=+) 28.Qe6 (28.Re1 d5 29.Re3 de4 30.Re4+- (30.de4?! Qc4 31.Qd7 Qc1 32.Nf1 Qf1 33.Kh2 Qf4 34.Rg3 Qf7 35.Qf7 Kf7=)) 28...Re6=+ 29.Ng4 Bd4 30.Rf1 h5 31.Nh2 d5 32.cd5 (32.Ng3 g6 33.Nf3 Bb2=+) 32...cd5–/+ 33.Ng3 g6 34.Rc1 Rc6 35.Rc6 bc6 36.Nf3 Bb2 37.a4 a6 (37...c5 38.b5–/+) 38.Ne2=+ Ba3 39.Ned4 c5 40.bc5 Nc5 41.Nc2 Bb2 42.d4 Na4 43.Nb4 a5 44.Nd5 (44.Nc6 Bc3 45.Ne7 Kf7 46.Nd5 Ke6 47.Nc7 Kf5=+) 44...Nc3–/+ 45.Nb6? (45.Nc3 Bc3 46.d5-+) 45...a4-+ 46.d5? (46.Nc4 a3 47.Na3 Ba3 48.Kg1-+) 46...a3 47.Nd2 a2 48.Nb3 Ne4 49.Nc4 (49.d6 Nd6 50.Nd5 h4-+) 49...Bf6 (better 49...Nc5! 50.Ncd2-+) 50.d6 Kf7 51.d7 Ke7 52.g4 hg4 53.hg4 Nc5!! (worse 53...Kd7 54.Kh2-+) 54.d8Q (54.Nc5 a1Q Combination) 54...Kd8 55.Ncd2 Bc3 (55...Bc3 56.Kg2 Bd2 57.Nc5 a1Q 58.Ne6 Ke7-+) 0–1. Sapareva,Magdalena – Kamenov,Valentin (1770), 197th Open MGU, 2017.

5.e3 Ne4 6.d3 Nf6 7.Nf3 Be7 8.Be2 0-0 9.0-0 Bg4 10.Nbd2 Bf3 (10...Qd7 11.Ng5=) 11.Nf3 (11.gf3?! Qd7=) 11...h6 12.Qc2 Ne8 13.Rad1 f5 14.e4 f4 15.d4 ed4 16.Nd4 Nd4 17.Bd4 Bf6 18.f3 Bd4 19.Rd4 Qf6 20.Rfd1 Rd8 21.c5 Qe5 22.Qc4 Kh8 23.Rd5 Qf6 24.Qd4 Qd4 25.R5d4 Nf6 (25...Rd7!?+/-) 26.cd6+- Rd6 27.Rd6 cd6 28.Rd6 Rf7 29.Rd8 Kh7 30.Bd3 g6 31.Bb5 (31.e5 Rd7 32.Rd7 Nd7+-) 31...Re7 32.Rf8 Kg7 33.Rc8 h5 34.Rc5 Kh6 35.Bc4 g5 36.Bd5 g4 37.Kf2 h4 38.h3 g3 39.Ke2 Kg7 40.a4?? Ne8?? 41.a5 Nd6 42.b5 b6 43.ab6 ab6 44.Rc6 Nb5 45.Rb6 Nc3 46.Kd3 Na4? 47.Rb7?? Nc5-+ 48.Kc4 Nb7 49.Kb5 Nd6 50.Kc6 Nf7 51.Bc4 Ne5 52.Kd5 Nc4 53.Kc4 Kf6 54.Kd5 Ra7 (54...Ra7-+) 0–1. Fournier,Frederic (1910) – robertonava (1825), Active (5/0), 2004.

5.e3 Be6 6.Nc3 a6 7.d3 Be7 8.Nf3 (8.Be2 d5 (8...0-0 9.Nf3 d5 10.cd5 Nd5 11.0-0 Re8 12.Ne4 f5 13.Nc5 Bc5) 9.cd5 Nd5 10.Nf3 0-0 11.0-0 f5 12.d4 e4 13.Ne5 Qd6) 8...0-0 (8...h6 9.Be2 0-0 10.0-0 Qd7 11.Qc2 Rfe8 12.h3 Rab8 13.Rfd1 b5) 9.Be2 (9.Qc2 d5 10.cd5 Nd5 11.Be2 f5 12.0-0 Qd6 13.Nd2 Qd7) 9...Qd7 (9...d5 10.cd5 Nd5 11.0-0 Nc3 12.Bc3 f6 13.d4 e4) 10.0-0 Ng4 (10...h6 11.Qc2 Rfb8 12.d4 ed4 13.ed4 Bg4) 11.b5 (11.d4 ed4 12.ed4 Bf5+= 13.h3 Nf6; 11.h3 Nf6 12.d4 ed4 13.ed4 Bf5) 11...ab5= 12.Nb5 (12.cb5 Na5 13.h3 Nf6) 12...f5 (12...h6 13.h3 Nf6) 13.d4 (13.h3 Nf6) 13...Na5 14.de5 (14.d5 Bf7=) 14...Nc4=+ 15.Nfd4 (15.Bc4!? Bc4 16.ed6=+) 15...Nb2–/+ 16.Qc2 de5 (16...c6!? 17.Qb2 Bd5 (17...cb5? 18.Bb5 Qc8 19.Rfc1+-) 18.ed6 Bd6 19.Nd6 Qd6 20.Bg4 fg4 21.Qb7 g3 22.hg3 c5=) 17.Ne6=+ Qe6 18.Qb2 Qb6 (18...Bd8 19.Rac1 Qe7 20.Rfd1=+) 19.Bg4 fg4 ½–½. Toll,A (2070) – Geerts,L, Kaunas LTU, 2011.

5.e3 Be6 6.Nc3 a6 7.Nf3 A) 7...h6 8.d4 (8.Be2 Be7 9.d4 ed4 10.Nd4 Nd4 11.Qd4 c5 12.Qd3 Rc8 13.0-0 cb4) 8...ed4 9.Nd4 Nd4 10.Qd4 Be7 11.Bd3 0-0 12.0-0 c6 13.Rfd1 Qd7; B) 7...g6 B1) 8.Be2 Bh6 (8...Bg7 9.0-0 0-0 10.Ng5 Bf5 11.f3 Qe7 12.Qb3 Qd7 13.Nge4 Ne4) 9.d4 Bf5 10.de5 Ne5 11.Nd4 Bg4 12.0-0 Nc4 13.Bg4 Nb2; B2) 8.Bd3 Bh6 (8...h6 9.0-0 Bg7 10.Qb3 0-0 11.h3 b5 12.Nd5 a5 13.Rfc1 ab4; 8...Bg7 9.0-0 h6 10.h3 0-0 11.Rc1 Qd7 12.Qa4 Rfe8 13.Qc2 Rab8; 8...Bd7 9.0-0 Bg7 10.Qb3 0-0 11.h3 h6 12.Nd5 Re8 13.e4 a5) 9.0-0 0-0 10.h3 Re8 11.Rc1 Bd7 12.Nd5 Bg7 13.Qc2 Be6; C) 7...Be7 C1) 8.Bd3 Qd7 (8...h6 9.0-0 0-0 10.Qc2 Qe8 11.h3 Qd7 12.Rfe1 Rfb8 13.Rac1 Re8; 8...0-0 9.Ng5 d5 10.Ne6 fe6 11.cd5 ed5 12.Qb3 Kh8 13.f3 Qd6) 9.Qc2 h6 10.0-0 0-0 11.h3 Rfb8 12.Rfe1 Re8 13.Rac1 Rab8; C2) 8.Qb3 g6 (8...0-0 9.Bd3 Qd7 10.Nd5 b5 11.0-0 bc4 12.Bc4 Nd5 13.Bd5 Rfb8; 8...Bf5 9.Nh4 Bd7 10.Nf3 Bf5 11.Nh4 Be6 12.Nf3 Bf5 13.Nh4 Be6; 8...h6 9.Bd3 0-0 10.Qc2 Re8 11.0-0 Qd7 12.h3 Rab8 13.Rac1 Ra8) 9.Bd3 0-0 10.0-0 d5 11.cd5 Nd5 12.Bc4 Nc3 13.Bc3 Bc4; C3) 8.Qc2 h6 (8...Qd7 9.Bd3 h6 10.0-0 0-0 11.h3 Rfb8 12.Rfe1 Re8 13.Rac1 Rab8; 8...0-0 9.Bd3 h6 10.0-0 Qe8 11.h3 Qd7 12.Rfe1 Rfe8 13.Rac1 Rab8; 8...Qc8 9.Bd3 h6 10.0-0 0-0 11.h3 Qd7 12.Rfe1 Rfe8 13.Rac1 Rab8) 9.Bd3 0-0 10.0-0 Qd7 11.h3 Rfb8 12.Rfe1 Re8 13.Rac1 Rab8.

5.e3 Be6 6.Nc3 Be7 7.d3 0-0 8.Be2 Re8 9.Nf3 a6 10.0-0 Nd7 11.b5 ab5= 12.Nb5 f5 13.Qd2 Rf8 14.d4 e4 15.Ne1 Na5 16.Qc2 Nb6 17.d5 Bd7 18.Nd4 Bf6 19.Rb1 Ba4 20.Qc1 Bb3 21.Ne6+/- Bb2 22.Qb2 Qf6 23.Nf8 Qf8 24.Nc2 Bc4 25.Bc4 Nac4 26.Qc3 Qf7 27.Rfd1 Ne5 28.Nb4 Nec4 29.Ra1 Kf8 30.h3 h5 31.a4 Ke7?? 32.a5!+- Kd7 33.ab6 Ra1 34.Ra1 Nb6 35.Ra7 Nd5 36.Nd5 Qd5 37.Qg7 Kc6 38.Qb2 b6 39.Qc2 Qc5 40.Qa4 Kd5 41.Qd7 h4 42.Qf5 (42.Qf5 Kc4 43.Qe4 Kc3 44.Ra2+-) 1–0. Holz auf der Heide,Gerhard (1965) – Kreyssig,Robert, Leipzig VfB op, 2007.

5.e3 Be6 6.Nf3 Bg4 7.Be2 e4 8.Nd4 Be2 9.Qe2 Nd4 (9...Ne5!? 10.0-0 Nd3+=) 10.Bd4 Be7 11.0-0 0-0 12.d3 ed3 13.Qd3 c6 14.Nd2 d5 15.cd5 Nd5 16.Nf3 Bf6 17.Bf6 Nf6 18.Rfd1 Qd3 19.Rd3 Rad8 20.Rad1 Rd3 21.Rd3 h6 22.Kf1 Re8 23.Ke2 Kf8 24.Nd2 Ke7 25.f3 Nd5 26.Ne4 f5 27.Ng3 Nf4?? (better is 27...g6=) 28.ef4+- Kf6 29.Kd2 g6 30.Re3 Rd8 31.Rd3 Re8 32.Ne2 g5 33.fg5 hg5 34.g3 b6 35.Rd6 Re6 36.Re6 Ke6 37.Kd3 Kd5 38.Nc3 Ke5 39.h4 f4 40.gf4 Kf4 41.hg5 Kg5 42.Ke4 Kf6 43.f4 a6 44.a4 c5 45.bc5 bc5 46.Nd5 Kf7 47.Kd3 Ke6 48.Kc4 Kd6 49.f5 a5 50.f6 Ke6 51.Kc5 Kf7 52.Kb5 Ke6 53.Ka5 Kf7 54.Kb5 Ke6 55.Kc5 Kd7 56.a5 Ke6 57.a6 Kd7 58.a7 Ke6 59.a8Q Kf7 1–0. Fournier,Frederic (1685) – Patzini (1630), Partie evaluee, 5m + 0s, 2008.

5.e3 Be7 6.Nf3 0-0 7.Be2 a6 8.d3 b5 9.Nbd2 bc4 10.Nc4 Bb7 11.0-0 e4 12.de4 Ne4 13.Bd3 d5 14.Ncd2 Nd2 15.Qd2 Bf6 16.Bf6 Qf6 17.Qc2 h6 18.Rac1 a5? (better is 18...Rfd8+/-) 19.b5+- Ne5 20.Ne5 Qe5 21.Qc7 Rab8?? (21...Qc7 22.Rc7 Rab8+-) 22.Qe5 1–0. Fournier,Frederic (1705) – taguncrokis (1650), Active, 2007.

5.e3 Be7 6.Nf3 0-0 7.Be2 e4!? 8.Nd4 Nd4 9.Bd4 c5 +=.

5.e3 Be7 6.Nf3 0-0 7.Be2 h6 8.d3 Nh7 9.Nbd2 f5 10.0-0 Ng5 11.Ng5 Bg5 12.Nf3 f4 13.Ng5 Qg5 14.ef4 Qf4 (worse is 14...Rf4 15.Bc1+/-) 15.g3 Qf6 16.Bg4 (16.f4 Nd4+=) 16...Nd4 17.Bd4 ed4 18.Bc8 Rac8 19.Qd2 Rce8 20.Rae1 Re7 (20...Qf3!?+=) 21.Re7= Qe7 22.Re1 Qf6 23.f4 Kh8 24.Qe2 Rf7 (24...g5 25.Rf1 Kg7 26.Kg2+/-) 25.Qe6 Kh7 (25...Qe6 26.Re6 a6 27.Kg2+/-) 26.Qf6+/- Rf6 (26...gf6!? 27.Re4 Kg6+/-) 27.Re7+- Kg6 28.Rc7 Rf7 29.Rf7 Kf7 30.Kf2 Kf6 (30...Ke6 31.h4+-) 31.g4 (31.Kf3 g6+-) 31...g5 (31...Ke6 32.Kf3 d5 33.c5+-) 32.Kf3 gf4 33.Kf4 b6 34.h4 a6 35.Ke4 Ke6 36.Kd4 b5 37.c5 dc5 38.Kc5 Ke5 39.d4 Kf4 40.g5! Kg4 (40...hg5 41.hg5 Passed pawn) 41.gh6 Kh4 42.h7 (42.h7+-) 1–0. Fournier,Frederic – carfer10, Active (2/0), 2005.

5.e3 Bf5 6.Nf3 a5 7.b5 Ne7 8.Be2 d5 (8...Ng6 9.d4=) 9.d3 (9.Be5 Ng6+/-) 9...d4 (better is 9...e4 10.de4 de4+=) 10.ed4 ed4 11.Bd4 Bg4 12.Nbd2 Bf3 13.Nf3 Nf5 14.Bc3 c6 15.bc6 bc6 16.0-0 Bd6 17.Re1 0-0 18.h3 Qc7 (18...Re8!?+-) 19.Bf6 gf6 20.Qc2 (20.d4 c5+-) 20...Kh8? (20...Bc5 21.Qa2+/-) 21.Bf1 (21.d4!? Ne7+-) 21...Rg8 (21...Be5!? 22.Rab1 Rab8+/-) 22.d4 Ne7 23.c5 Bf4 24.Re4 f5 25.Re2 Ng6 (25...Qd7 26.Rae1 Nd5 27.Nh4+-) 26.Qf5 Qe7 (26...Rge8+-) 27.Re7 Ne7 28.Qf4 Rg7 29.Re1 Nd5 30.Qe5 Rag8 31.Ng5 (better is 31.Bc4 h6+-) 31...f6 32.Qd6 Rg5 33.Qc6 Rd8 34.Bc4 Kg7 35.Bd5 Rgd5 36.Re7 Kh6 (36...Kg6 37.Qe6 Re8 38.Qf7 Kg5 39.Qg7 Kh5 40.Qf6 Re7 41.g4) 37.Qf6 Kh5 38.g4 (38.Rh7) 1–0. Fournier,Frederic (1955) – fyl (1675), Active (5/0), 2005.

5.e3 Bg4 6.Be2 Qd7 7.Nf3 Be7 8.d3 h6 9.Nbd2 a6 10.0-0 0-0 11.Qc2 b5 (11...Rfe8!?=) 12.Rac1 Na7 13.h3 Be6 14.d4 ed4 15.Nd4 Rac8 16.Ne6 Qe6 (16...fe6!? 17.Rfd1 Qe8+/-) 17.cb5+/- ab5 18.Bf6 Qf6 19.Bg4 c6 20.Bc8 Rc8 21.Rfd1 d5 22.e4 Qe5 23.ed5 cd5 24.Nf3 Qe6 25.Qd3 Rd8 26.Rc7 Rd7 27.Rd7 Qd7 28.Qd5 Qd5 29.Rd5 Bf6 30.a4! ba4 31.Ra5 Nc6 32.Ra4 Be7 (32...Ne7 33.b5 Nd5 34.Ra8 Kh7 35.Rb8+-) 33.b5 Nd8 34.Ra8 Kh7 35.Ne5 f6 36.Nc6 Nc6 37.bc6 Bd6 38.Rd8 Be5 39.Rd7 1–0. Fournier,Frederic (2300) – April (1660), echecsemail.com (Defi), 2007.

5.Nf3 Be6 6.e3 a6 7.Be2 h6 8.0-0 Be7 9.d3 b5 (9...0-0!?=) 10.cb5+/- ab5 11.Nc3 Qb8 12.Qc2 (12.d4 Na7 13.de5 de5 14.Ne5+/-) 12...d5? (better is 12...Bf5=) 13.d4+- e4 (better is 13...ed4 14.Bb5 0-0 15.Bc6 dc3 16.Bc3 Ra6+-) 14.Nd2?? (better is 14.Bb5!? Qb7 15.Ne5+-) 14...Qb7 (better is 14...Na7!?+=) 15.Nb5 Na7?? (better is 15...Bg4 16.f3 ef3 17.Nf3 0-0+/-) 16.Qc7 (better is 16.Nc7 Kd8 17.Na8 Qa8+-) 16...Qa6 17.Rfe1?? Nb5+= 18.Qc2 Qb7 19.a4 Nd6 20.b5 0-0 21.Nb3 Nc8 22.Nc5+= Bc5 23.dc5+/- 1–0. Fournier,Frederic (1780) – saynin, Active (5/0), 2004.

5.e3= f5 6.Nf3 Nf6 7.d4 e4 8.Nfd2 c6 (8...d5 9.Nc3=) 9.Nc3 d5 10.g3 (10.b5 Be6=) 10...Be6 11.a4 (11.c5 b6=) 11...g6 (11...Rb8 12.c5=) 12.Ba3 (12.b5 dc4 13.Bc4 Bc4 14.Nc4 Ned5=) 12...Bg7 (12...dc4 13.Bc4 Bc4 14.Nc4=) 13.Rc1 (13.b5 Rc8=) 13...0-0 14.b5 Rc8 (14...Rf7 15.Qb4=) 15.a5 (15.bc6 bc6 16.Rb1 Nd7=) 15...Re8 16.b6 a6 (16...ab6 17.Qb6 Qb6 18.ab6=+) 17.Na4 dc4 (17...Nd7 18.Be2=) 18.Bc4+= Bc4? (better 18...Bd5!?+=) 19.Nc4+- (worse 19.Qc4 Ned5=; 19.Rc4?! Ned5=) 19...Ned5 (better 19...Qd5 20.Rb1 Nd7+-) 20.Nc5 (better 20.Nd6 Qd7 21.Ne8 Re8 22.Nc5+-) 20...Rb8+= 21.Ne5 g5 22.h4 h6 (better 22...g4!?+=) 23.hg5+/- hg5 24.Na6! ba6 25.Nc6 Qd7 26.Nb8 Rb8 27.Rc5 (27.Qc4 Qb7+-) 27...Qf7 28.Qc2 f4?? (better 28...Qd7 29.Qc4 g4+/-) 29.Rc8+- Rc8 30.Qc8 Bf8 31.Bf8 (31.b7 Nd7 32.Bf8 Qf8 33.Qd7 Nf6+-) 31...fg3 (31...fe3 32.Rh2 Ne8 33.b7+-) 32.fg3 Ne3 33.Bd6 Kg7 34.Qh8 Kg6 35.Qh5 (35.Rh6 Kf5 36.Rf6 Qf6 37.Qf6 Kf6 38.Be5 Ke6 39.b7 Nc2 40.Kd2+-) 35...Nh5-+ 36.Rf1 Qf1 37.Kd2 Qd3 (37...Qd3 38.Ke1 Qd1 39.Kf2 Qd2 40.Kg1 Qg2) 0-1. ClayPigeons (2165) - deldo26 (2310), Rated Bullet game, lichess.org, 2020.

5.e3= Nf6 6.d4=.

5.Qa4 b6 6.Nc3 Be6 7.e3 Nb7 8.Nf3 Nc5 9.Qc2 Nf6 10.d4 ed4 11.ed4 Ncd7 12.Ng5 1–0. michaelbuss – R2D2, ChessWorld.net, 2008.

5.Qa4 b6 6.Nc3 Be6 7.e3 Nf6 8.Nf3 g6 (8...a6 9.ba6 Bd7 10.Qc2+=) 9.d4+- e4 10.Ne4 Ne4 11.d5 Nc5 12.Qd1 f6 (12...Rg8!? 13.de6 fe6+-) 13.de6+- Ne6 14.h4 (14.Qd5 Ke7+-) 14...Bg7 15.h5 gh5 (better 15...0-0 16.Qd5 Re8+-) 16.Qd5 Qc8 (16...Kd7 17.0-0-0+-) 17.Be2 c6 18.Qh5 Kf8 19.Qf5 Ke7 (19...Nc5 20.Qf4 Qd7 21.Rd1+-) 20.Rd1 Qc7 (20...cb5 21.cb5 Nc4 22.Rc1 Nb2 23.Rc8 Rac8 24.Rh7 Rh7 25.Qh7+-) 21.Rh4 Rad8 (21...Kf7+-) 22.Re4 Qd7 23.Nd4 (23.Nd4 Rhe8 24.Ne6+-) 1–0. pcmvr – stefandima, net–chess.com, 2019.

5.Qa4 b6 6.Nc3 Be7 7.Nf3 Nf6 8.e3 Qd7 9.Be2.

5.Qa4 b6 6.Nc3 Nf6 7.Nf3 a6 8.e3 ab5 9.cb5.

5.Qa4 b6 6.e4 Be6 7.Nf3 Nf6 8.Bd3 Be7 9.Nc3 0-0 10.Nd5 Nd7 11.Ne7 Qe7=+ 12.0-0? Nc5-+ 13.Qc2 Nd3 14.Qd3 Bc4 15.Qc3 Bf1 16.Rf1 Nb7 17.d4 Rad8 18.de5–/+ de5 19.Ne5=+ Nc5?? 20.Nc6+/- f6?? 21.Ne7+- Kh8 22.Qc4 Rde8 23.Bd4 Re7 24.Bc5 bc5 25.Qc5 Rfe8 26.Rd1 Re5 27.Qc7 Re4 28.h3 R4e7 29.b6 ab6 30.Qb6 Re6 31.Rd6 Re1 32.Kh2 R1e2 33.a4 h6 34.a5 Rc8 35.Rd8 Rd8 36.Qd8 Kh7 37.a6 Ra2 38.Qc7 Rf2 39.a7 Ra2 40.Qb7 Ra7 41.Qa7 Kg6 42.Qe7 h5 43.g4 h4 44.Qe8 Kg5 45.Qf7 g6 46.Qd5 f5 47.Qd8 Kf4 48.gf5 gf5 49.Qh4 Ke5+- 50.Qe7 Kf4 51.h4 Kg4 52.Qg5 Kf3+- 53.h5 f4 54.h6 Ke2 55.h7 f3 56.h8Q f2 57.Qb2 Ke1 58.Qbc1 Ke2 59.Qe5 Kf3 60.Qce3 Kg4 61.Q5g5# 1–0. saetta – designer, ICS, 1999.

5.Qa4 b6 6.Nf3 a6 7.Nc3 ab5 8.cb5 Be6 9.Qc2.

5.Qa4 c5 6.Nc3 Nf6 (6...Be6 7.e3 Nf6 8.Nf3 Be7 9.Bd3) 7.Nf3 Be7 8.e4 a6 9.Bd3.

5.Qc2 b6 6.e3 Nf6 7.Be2 g6 8.Bf3+= Rb8 9.d3 Bf5 10.e4 Be6= 11.Nc3 Bg7 12.Nge2 Qd7 13.0-0 0-0 14.Rfd1 Bg4 15.Bg4+/- Ng4 16.f3?? Ne3–/+ (16...Ne3 17.Qa4 Nd1 18.Rd1 f5–/+) 0–1. Saiyajin – Jeff_Foster, playchess.de, 2002.

5.e3 a6 A) 6.ba6 Ra6 (6...Be7 7.Nf3 Nf6 8.c5 0-0 9.Nc3) 7.c5 Ra8 8.Nf3 Nf6 9.Nc3; B) 6.Nf3 Nf6 7.Nc3 Be6 8.ba6 Ra6 9.Ng5.

5.e3 b6 6.Nf3 a6 7.d4 Bg4 8.de5+/- de5 9.Qd8 Rd8 10.Be5 Bb4 11.Nfd2+- ab5?? 12.Bg7 (12.cb5?! f6 13.Bc3 Bc3 14.Nc3 Ne7+/-; 12.Bc7?! Rc8 13.Bb6 Nc4+=). Bonetti,Shane – ChrisB, ICC, 2002.

5.e3 b6 6.Nf3 Bb7 7.d3 Be7 8.Be2 Nf6 9.Nc3 0-0 10.0-0 h6 11.Nh4 Nd7 12.Nf5+= Bf6 13.Bf3 Nc5 14.Nd5 Bd5 15.Bd5+/- Rb8 16.Bc3 Qd7 17.Ng3 Nab7 18.Nh5 Qf5 19.Nf6 Qf6+/- 20.f4 Qe7 21.fe5 de5 22.Rf5 e4? 23.Qg4+- g5?? 24.Bf6 Qe8 25.Rg5!! hg5 26.Qg5 (26.Qg5 Kh7 27.Qg7#) 1–0. jonnyboy373 – MikeMcC, ChessWorld.net, 2004.

5.e3 b6 6.Nf3 Be7 7.d4 ed4 8.Nd4 Bb7 9.Nc3 Nf6 10.Nd5+/- Nd5 11.cd5 Bd5 12.Qh5 Bb7 13.Ne6+- g6?? 14.Nd8 gh5 15.Nb7 Nb7 16.Bh8 Nc5 17.Rd1 0-0-0 18.Bd4 f5 19.Bc4 Kb8 20.Rg1 Bg5 21.h4 Bh6 22.g3 Ne4 23.Be6 Nc5 24.Bf5 Bf8 25.Bh7 Be7 26.Bg6 Rg8 27.Bf7 Rf8 28.Bh5 Rg8 29.Rh1 Bh4 30.gh4 Rh8 31.Bh8 (31.Bh8 a6 32.Bf3 ab5 33.Rg1+-) 1–0. themonkey – opponent, gamecolony.com, 2007.

5.e3 Nc4?? 6.Bc4+- Nh6 7.h3 Be7 8.Ne2 d5 9.Bb3 0-0 10.Be5 Qd7 11.Nbc3 a6 12.a4 Bb4 13.0-0 Re8 14.d4 f6 15.Nd5 c6 16.Nf6 Kf8 17.Nd7 Bd7 18.Ng3 Rad8 19.Nh5 Bc3 20.Rc1 Bb4 21.Bg7 Ke7 22.Bh6 cb5 23.Bg5 Kd6 24.Bd8 Rd8+- 25.Qf3 Be6 26.Be6 Re8 27.Qd5 Ke7 28.Qd7 Kf8 29.Qf7# 1–0. hal1958 – Rumpnisse, playchess.de, 2002.

5.e3 d5 6.cd5+/- Qd5 7.Qh5 Nc4 8.Bc4 Qc4 9.Qe5 Ne7 10.Nc3 Qb4? 11.Nd5+- Qg4? 12.Nc7 Kd8 13.Na8 Qg2 14.Qd4 Bd7 15.Qa7 Qh1?? 16.Qb6 Ke8 17.Nc7 Kd8 18.Ne6 Ke8 19.Qd8# 1–0. Bonetti,Shane – guest610, ICC, 2002.

5.e3 Nf6 6.Be2 Bf5 7.Qa4 c5 8.Nc3 Be7 9.Nf3 0-0 10.0-0 e4 11.Nh4 Be6=+ 12.f4 a6 13.f5 ab5 14.cb5 Nb3 15.Qa8!?+= Qa8 16.ab3 Qc8 17.fe6 fe6 18.g3 g5 19.Ng2+/- d5 20.Na4 Nd7 21.Bg4 Nb8?? 22.Nb6+- Bf6 23.Nc8 Bb2 24.Be6 Kg7 25.Rf8 Kf8 26.Ra7 d4 27.Rb7 (27.Rb7 de3 28.Ne3+-) 1–0. pierre – empress, internet, 2008.

5.e3 Nf6 6.Nf3 Bg4 7.h3 Bh5 8.Qc2 Bf3 9.gf3 Be7 10.Nc3 0-0 11.Bd3 g6 12.h4 Nh5 13.Ke2 c6=+ 14.a4 Rb8 15.Rag1 Bh4?? 16.Rg4+/- Bg5 17.Ne4 Be7 18.Rh5+/- d5? 19.Be5 de4?? 20.Be4 Rc8 21.Rh7! Kh7 22.Bg6! Kg8 23.Bh7# 1–0. Wiman,Daniel (2735) – Abrahamsson,Robin (2455), Hallstahammar Open (6), 2001.

5.e3 Nh6 6.Nf3 b6 (6...a6!?=) 7.d4 e4 8.Nfd2 Qe7 (better 8...f5!?+=) 9.Nc3+- Bb7 10.d5 (10.Nd5!? Bd5 11.cd5 f5+-) 10...f5+/- 11.Qh5 (better 11.Ne2+/-) 11...g6=+ 12.Qh3 (better 12.Qd1 Bg7 13.Be2=+) 12...Qg5?? (better 12...Bg7-/+) 13.Nce4+- fe4 14.Bh8 (better 14.Qe6 Qe7 15.Qe7 Be7 16.Bh8 a6 17.ba6 Ba6+-) 14...Qg4 (14...Qe7+-) 15.Qg4 Ng4 16.Ne4 Be7 17.Be2 Nh6 (17...Kf7 18.Bd4 Ne5 19.Rc1+-) 18.0-0 Bc8 19.Bf6 Bf5 20.Be7 (20.f3 Nf7+-) 20...Be4 (20...Ke7 21.Ng5+-) 21.Bg5 Nf7 22.h4 (22.Bf6 Nb7+-) 22...Ne5 (22...Ng5 23.hg5 Nb7 24.f3+-) 23.Rac1 (23.Rad1 Bc2 24.Rd4 Bf5+-) 23...Bd3 (23...Nb7 24.Rc3 Nc5 25.Rd1+-) 24.Bd3 Nd3 25.Rc3 Ne5 26.Rfc1 Kd7 27.f4 Ng4 28.h5! gh5 29.Bh4 (29.e4 h6 30.Bh4 Rf8+-) 29...Re8 30.Bf2 Nb7 31.e4! Re4 32.Rf3 1-0. Goeckel,Hermann - Clark,Alan, NZL NZCCA TT Class, 2000.

5.e4 Be6 6.d3 c6 7.a4 b6 8.Nf3 Nf6 9.Be2 cb5 10.ab5+= a6 11.ba6 Ra6 12.h3 Ra7 13.0-0 g6 14.Nc3 Bg7 15.Nb5 Ra8 16.Ba3 Nb7 17.Bb4 Ra1 18.Qa1 0-0 19.Qa3 Re8 20.Bd6 Nd6 21.Qd6 Qd6 22.Nd6 Rd8 23.Nb5 Nd7 24.Ra1 Bf8 25.Nc7+- Bc5 26.Ng5 Bd4 27.Rb1 Rc8 28.Nce6 fe6 29.Ne6 Nc5? 30.Nd4 Rd8 31.Nc6 Ra8 32.Ne5 Ra5 33.Rb6 Ra1 34.Kh2 Ra2 35.Bf3 Rf2 36.d4 Na4 37.Rb8 Kg7 38.d5 h5 39.Rc8 Kf6 40.Nd3 Rd2 41.Nc5 Nb6 42.Rc6 Ke5 43.Rb6 Rc2 44.Nd7 Kd4 45.c5 1–0. hal1958 – JerryReneau, playchess.de, 2003.

5.e4 Nf6 6.Bc3 Nc4 7.Bc4+/- Ne4 8.Qe2 Nf6 9.f4+- Bg4 10.Nf3 d5 11.Be5 dc4 12.Bf6 Be7 13.Bg7 Rg8 14.Bf6 Be6 15.Be7 Qe7 16.Nc3 0-0-0 17.f5! Qc5 18.fe6 Rge8 19.Ne4 Qf5 20.Qc4 Re6 21.d3 c6 22.0-0 Qb5 23.Qb5 0–1. pcmvr (2225) – pauloenter (1840), net–chess.com, 2006.

5.Nf3 Nc4–/+ 6.Bc3 c5 (6...Nf6 7.e4 (7.e3 Nb6 8.Qc2 Be7 9.Bb2) 7...Nb6 8.Qc2–/+ Be7 9.Be2; 6...a6 7.d3 Nb6 8.ba6 Ra6 9.e4) 7.e3 (7.bc6 bc6 8.e4=+ Be6 9.d4) 7...e4 (better 7...Nb6 8.Qc2 Nf6–/+ (8...f5 9.d3) 9.Na3) 8.Bc4+= ef3 (8...d5 9.Ne5+= 0.54/9 (9.Bb3 ef3 10.Qf3=)) 9.Qf3 Threatening mate: Qxf7 (9.gf3?! d5 10.Bb3 Be6=+) 9...Nh6 (9...Nf6!?+=) 10.0-0 (10.Na3 Qe7 11.0-0 Be6+-) 10...Qe7 (10...Qg5 11.Bd5 Rb8 12.d4+-) 11.Bd5 (11.Na3 Be6+-) 11...Rb8 (11...Bg4 12.Qf4+-) 12.Re1 (12.h3+-) 12...a6? (12...Be6 13.Na3+-) 13.a4 (better 13.ba6 Bg4 14.Qf4 ba6 15.Na3+-) 13...b6? (better 13...Bg4 14.Qf4 Be6+-) 14.Na3+- Bg4 (14...ab5 15.Nb5 Bg4 16.Qg3+-) 15.Bc6 Kd8 16.Qf4 Be6 (16...ab5 17.ab5 f6 18.Nc4+-) 17.d4 (17.ba6!? Bc8 18.Bb5 Rg8+-) 17...g5 (17...Bd7 18.dc5 bc5 19.Nc4 Bc6 20.bc6+-) 18.Qe4 Bg7 (18...Rg8 19.ba6 Rc8 20.Bb7+-) 19.ba6 f5 (19...Bf5 20.Qe7 Ke7+-) 20.Qd3 Rc8 21.Bb7 c4 (21...Rg8 22.Reb1 c4 23.Qe2+-) 22.Qc2 Rc7 (22...d5 23.a5 Rb8 24.Reb1+-) 23.Nb5 (better 23.a7 Kd7 24.a8Q Ra8 25.Ba8+-) 23...Rd7 (23...Rb7 24.ab7 Qb7+-) 24.a7 Ke8 (24...Rb7 25.a8Q Bc8 26.d5+-) 25.a8Q Kf7 26.Qh8 (better 26.Qa6 Rb8 27.Bc8 Rd8 28.Be6 Qe6 29.Qa7 Kg8+-) 26...Bh8 27.Bf3 (27.Bc6 Rd8 28.e4 Kg8+-) 27...g4 (27...d5 28.Reb1+-) 28.Be2 (better 28.Bc6 Rd8 29.d5 Bd7 30.Bh8 Rh8 31.Qc4 Kg6+-) 28...Qh4 (28...d5 29.Bd2 Kg7 30.Rab1+-) 29.Bb4 (better 29.d5 Bd5 30.Bh8 g3 31.fg3 Qe4 32.Qe4 Be4 33.Bc4 Ke7+-) 29...Ke7 (29...d5 30.Bd6 Qd8 31.Bf4+-) 30.Bc4 Qf6 (30...g3 31.hg3 Qe4 32.Bd3+-) 31.Rec1 (better 31.d5 Bd5 32.Bd5 Qb2+-) 31...Nf7 (31...g3 32.hg3 Bc4 33.Qc4+-) 32.Be6 (better 32.d5 Bd5 33.Bd5 g3 34.hg3 Qg5+-) 32...Qe6 33.Qc4 (33.Qc8 Qb3 34.Nd6 Nd6 35.Bd6 Kd6 36.Rc6 Ke7 37.Qh8 Qd5+-) 33...Qc4 34.Rc4 Kf6 35.Rc6 The pressure on the isolated pawn grows 35...Ke7 36.Rc7 (36.Rb6!? Ke6+-) 36...Bg7 37.Rac1 Bf8 38.Rd7 Kd7 39.Rc7 Ke6 40.Rc6 h5 41.Rb6 Kd5 42.f3 (42.Rb8 Bh6+-) 42...Ng5 (42...gf3 43.gf3 h4 44.a5+-) 43.Bd6 gf3 (43...Bg7 44.Nc7 Kc4 45.Bf4+-) 44.Bf8 h4 45.Kf2 Ke4 46.gf3 Nf3 47.Bd6 (better 47.Nd6 Kd5 48.Kf3 Ke6+-) 47...Ng5 48.Nc3 (better 48.Be7 Nh3 49.Kg2 f4+-) 48...Kd3 49.Ne2 Ne4 50.Kf3 (better 50.Ke1 Nd6 51.Rd6 Ke3+-) 50...Nd2 51.Kf4 Ke2 52.Rb2 Kd3 53.Rd2! Kd2 54.a5 h3 55.a6 Ke2 56.a7 Kf2 57.a8Q Kg1 (57...Ke2 58.Qa6 Ke1 59.Qa2 Kd1 60.Bb4 Kc1 61.d5 Kd1 62.Qd2) 58.Kf3 Kf1 (58...f4 59.Qa1 Kh2 60.Bf4) 59.Qa1 1–0. Hawranke,Stefan – Dalle,Natasha, Wch IBCA U18 blind 3rd, 2003.

6.Qa4 b6 7.d4 Bd7 8.Ne2 e4 9.Nbc3 f5 10.Nf4 Nf6 11.Be2 Be7 12.0-0 0-0 13.h3 c6 14.d5 cb5 15.cb5 Nb7 16.Rac1 Nc5= 17.Qd4 Rc8 18.Na4 Na4 19.Qa4+/- Rc1 20.Rc1 Qa8? 21.Rc7+- Rc8? 22.Ra7 Qb8 23.Bf6 Bf6 24.Rd7 Be5 25.Ne6 Rc1 26.Bd1 Qc8 27.Rd8 Qd8 28.Nd8 Kf8 29.Ne6 Ke7 30.Qa7 Ke8 31.Qb8 Kf7 32.Qf8 Kg6 33.Qe8 Kh6 34.Qh5# 1–0. pier_e – a1b1c1, internet, 2009.

6.Qa4 b6 7.Nf3 e4 8.Nd4+= Nf6 9.Ne6 fe6 10.d4 Qd7 11.Nd2 d5 12.c5 Qf7 13.Be2 a6? 14.ba6+- Nd7 15.Bc3 Be7 16.Ba5 ba5 17.Qc6 Ra7? 18.Bg4 Qg6 19.Be6 Qg2 20.Qd7 Kf8 21.Qc8 Bd8 22.Qd8# 1–0. Trokenheim,Marek – Ghenov, email, 1999.

6.d3 a6 7.Nf3 =.

6.d3 b6 7.g3 Nf6 8.Bg2 Rb8 9.Bc3 Nb7 (9...e4 10.Ba5 (worse is 10.Be4 Ne4 11.de4 Nc4+=) 10...ba5 11.Nc3= (worse is 11.Be4 Ne4 12.de4 Bc4+=)) 10.Bb4 (10.Ne2 Be7+=) 10...Be7= 11.Nc3 0-0 12.Qa4 Nc5 13.Bc5 dc5 14.Rd1 Bf5 15.Qa7 Qc8 (worse is 15...Bd3 16.Nge2+/-) 16.Qa4 Rd8 17.Qc2 Qe6 18.Nd5 Qd7 19.e4 (19.Ne2 Nd5 20.Bd5 Bh3+/-) 19...Nd5= 20.ed5 Qd6 21.Ne2 Ra8 22.0-0 Ra3 23.Nc3 Rda8 24.Rb1 h5 25.h3 Bf6 26.Rb3 Qd7 27.Kh2 Qd6 (27...R3a5 28.Qd1+=) 28.Ra3 Ra3 29.Qb2 Ra5 30.Qe2 h4 31.Be4 Ra3? 32.Qb2+- Rc3 33.Qc3 Qd7 34.g4 Bg4 35.hg4 Qg4 36.Rg1 Qf4 37.Kg2 h3 38.Kf1 Bh4 39.Qe1 f5 40.Qe3 Qe3 41.fe3 fe4 42.de4 g5 43.Ke2 Kg7 44.Kf3 Kg6 45.Kg4 Bf2 46.Rh1 Be3 47.Rh3 (47.Rh3 Bf4 48.Rh8+-) 1–0. Dziedzic,Ferdynand – Bulinski,Rafal, Poznan op–B Poland, 2004.

6.d3 Be7 7.Bc3 c6 (7...c5 8.Qa4 b6 9.Be2+=) 8.Qd2 (8.Qa4 b6 9.bc6 Rc8+=) 8...b6+= 9.Ba5 ba5 10.bc6 Rc8 11.d4 ed4 (11...Rc6? 12.d5 Rb6 13.de6 fe6 14.Nc3+-) 12.ed4 (12.Qd4?? Bf6 13.Qa7 Ba1-+) 12...d5 13.c5 Nf6 (13...Rc6? 14.Bb5 Bd7 15.Bc6 Bc6 16.Nf3+-) 14.Nc3 Ne4 (14...Rc6? 15.Bb5 Bd7 16.Bc6 Bc6 17.Nf3+-) 15.Ne4 de4 16.Ba6 Rb8 (16...Rc6? 17.Bb5 Bd7 18.Bc6 Bc6 19.Ne2+-) 17.Rd1 Bd5 18.Nh3 e3? (18...Bc6!? 19.0-0 Qd5+/-) 19.fe3 Bh4 20.Kf1 Qf6 21.Nf2?? (better is 21.Kg1 Qc6 22.Nf4+-) 21...Qc6–/+ 22.Qd3?? (22.e4 Qa6 23.Kg1 Bf2 24.Qf2 Be4 25.h4-+) 22...Bg2-+ 23.Kg1 Bh1 24.Nh1 Rb2 25.e4 Qg6 26.Ng3 0-0 27.Bc4–/+ Qg4 28.Rf1 Qh3 29.Ne2 Qg4 30.Kh1 Rfb8 31.h3+/- Qd7? 32.Rf7+- Rb1 33.Rf1 Kh8 34.Rb1 Rb1 35.Qb1 Qh3 36.Kg1 Qg4 37.Kh2 g5 38.Qb8 Kg7 39.Qg8 Kh6 40.Qf8 Kg6 41.Bf7 Kf6 42.Bh5 (42.Bh5 Ke6 43.Bg4#; 42.Be8 Ke6 43.Qd6#) 1–0. Zielke,Bernd – Hogreve,Holger, Schleswig Holstein–ch A, 2009.

5.a3 Nd3 6.ed3 a6 7.ba6 Ra6 8.d4 (8…Qe7 9.Ne2+-) 1–0. mrkt – guest4178, ICC, 2004.

5.a3 Nd3 6.ed3 d5 7.Be5 dc4 8.dc4 f6 9.Bb2 Ne7 10.Be2 Nf5 11.Nf3 Be6 12.0-0 Bd6 13.Re1 0-0 14.Bd3 Be5 15.Ne5 fe5 16.Qe2 Nd4 17.Qe5 Nb3 18.Qg7# 1–0. pierre – tyfkin, internet, 2009.

5.a3 Be6 6.ab4 Bc4 7.Nc3 d5 8.d3 d4 9.dc4 Bb4 10.Qb3 Qd6 11.Ra4 dc3 12.Bc3 Bc5? 13.e3 Nf6 14.Nf3 0-0 15.Be2 Ne4 16.Be5 Qd7 17.0-0 f6 18.Bd4 Bb6 19.Bb6 cb6 20.c5 Kh8 21.Re4 bc5 22.Rd1 Qf5 23.Rf4 Qc8 24.Bc4 a6 25.ba6 ba6 26.Qa4 Re8 27.Rf5! Qf5 28.Rd5 Qb1 29.Qd1 (29.Qd1 Qd1 30.Rd1+=) 1–0. KHW – madivashka, ChessWorld.net, 2002.

5.a3 Bf5 6.ab4 e4 7.e3 d5 8.Ne2 Nh6 9.Ng3 Bb4 10.Bg7 Rg8 11.Bh6 dc4 12.Nf5 Qd5 13.Nd4 0-0-0 14.Ra7 Qc5 15.Qa4 Kd7 16.b6 Ke7 17.Rb7 Rd7 18.bc7 Rc8 19.Nf5! Qf5 20.Qb4 Ke8 21.Qf8# 1–0. pcmvr (2865) – dwarner, net–chess.com, 2008.

5.d4 ed4 6.Bd4 Nf6 7.Nc3 Be6 8.e4 c5 9.Bf6 Qf6 10.Rc1 Qd8 11.Nge2 Bc4 12.Nf4 Bf1 13.Kf1 Be7 14.Nfd5 0-0 15.Qf3 Nd7 16.Qf5 Bf6 17.a3 g6?? 18.Qd7!!+- Bc3 19.Qd8 Rad8 20.Rc3 Kg7 21.Ke2 b6 22.Re3 Rde8 23.Rd1 Rd8 24.Kd3 Rd7 25.g4 g5 26.Rh3 f6 27.Kc4 Kg6 28.Rf3 h6 29.Rf5 Rff7 30.h4 Kg7 31.f4 Kg6 32.h5 Kg7 33.Rf1 Rf8 34.fg5 (34.fg5 hg5 35.Nf6+-) 1–0. pierre – limy, ChessWorld.net, 2005.

5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Be6 9.Nf3 h6 (9...Nf6 10.Nc3=) 10.Be2 Nf6 11.0-0 Be7 12.d4 e4 13.Nfd2 d5 14.Nc3 (14.cd5 Bd5 15.Qc2 Bb4+/-) 14...0-0 (14...c6 15.c5+=) 15.Qc2 (15.cd5!? Bf5 16.Qc2+/-) 15...c6+= 16.Qb3 Qd7 17.Rb1 dc4 18.Bc4 Bc4 19.Qc4 Qf5 20.Qb3 Ng4 (better 20...Bd6!?+=) 21.Nce4 cb5 (better 21...Re8!?+/-) 22.Qb5+- Qg6 23.h3 Nf6 24.Nf6 Bf6 25.Qb7 Qd3 26.Qb2 Nc6 (26...Nd7 27.Qc3 Qe2 28.Ne4+-) 27.Qa2 (27.Qc3 Qa6+-) 27...Ne7 28.Nf3 Nf5 29.Rb7 Nd6 30.Rb3 Qd1 31.Kh2 Ne4 32.Rb1 Qd3 33.Kg1 Rc8 (33...Nd6 34.Qb3 Qf5 35.d5+-) 34.Ne5 (better 34.Ne1!? Qd2 35.Qd2 Nd2+-) 34...Be5+/- 35.de5 Rc2? (better 35...Kh7 36.Rf1 Nd2+/-) 36.Rb2 (36.Rb8 Kh7 37.Qf7 Rf2 38.Qg8 Kg6 39.Rb6 Rf6 40.Rf6 (40.ef6?! Qe3 41.Kh2 Qg3 42.Kh1 Qe1 43.Kh2 Qg3 44.Kg1 Qf2 45.Kh2 Qg3=) 40...Nf6 41.ef6 Qe3 42.Kf1 Qd3 43.Ke1 Qe3 44.Kd1 Qg1 45.Kc2 Qg2 46.Kb3 Qb7 47.Kc3 Qf3 48.Kb4 Qb7 49.Ka3 Qa6 50.Kb2 Qf6 51.Kb1 Qf1 52.Ka2 Qa6 53.Kb2 Qf6 54.Kb1 Qf1 55.Kb2 Qf6=) 36...Qd1? (36...Rc1!? 37.Kh2 Kh7 38.Qf7 Ng5=) 37.Kh2+/- Rc1?? (37...Nd2 38.Qa8 Kh7 39.Rc2 Nf1 40.Kg1 Nd2 41.Kh2 Nf1 42.Kh1 Nd2 43.Kh2=) 38.Qa8+- Kh7 39.Qe4 g6 40.Rb7 Kg7 41.e6 Ra1 (41...Kf8 42.Qb4 Kg8 43.ef7 Kh7 44.f8Q Qd7 45.Rd7) 42.Rf7 Kg8 (42...Kh8 43.Qe5 Kg8 44.Qg7) 43.Qg6 (43.Qg6 Kh8 44.Qg7) 1-0. dannysmet (2005) - tshow (2090), Rated Blitz game, lichess.org, 2020.

5.e3 b6 6.d4+= ed4 7.ed4 Bb7 8.Nf3 Nf6 9.Be2 Ng4 10.h3 Nh6 11.0-0 Qf6 12.Re1 Bc8? 13.Bd3+- Be7 14.Qe2 Be6?? 15.d5 Bd7 16.Bf6 (16.Bf6 0-0 17.Be7+-) 1–0. Fredek (2065) – Guest1353892, Freundschaftspartie, 5m + 0s, 2006.

5.Bd4 ed4 6.e3 Qf6 (better 6...de3 7.de3 g6=+) 7.Be2?? (better 7.ed4 Qd4 8.Nc3=) 7...d3! 8.Bd3? (8.Nc3 de2 9.Nge2-+) 8...Qa1 9.Nc3 Qb2 (9...Qd1 10.Kd1 Nf6 11.Nf3-+) 10.Nge2 Qa3 (10...Nf6 11.Nf4-+) 11.0-0 Qc5 (11...Nf6 12.Nf4-+) 12.Qa4 Qg5 (12...Nf6 13.Nf4-+) 13.b6 (13.Nd5 Qd8 14.b6 Bd7 15.Qa7 Ra7 16.ba7–/+) 13...c6 (better 13...Bd7 14.Nb5 Bb5 15.cb5 cb6-+) 14.Nd5= Bh3 (better 14...Kd8!? 15.f4 Qh5=) 15.Nc7 Kd7 Threatening mate: Qxg2 16.Ng3 (better 16.Nf4 Bg2 17.Ng2+-) 16...Nf6?? (16...Rc8 17.Qa7 Bg4 18.Qb7 Kd8+-) 17.Na8+- h5 (17...a6 18.gh3 Kd8 19.Nc7+-) 18.Bf5!! Bf5 (18...Qf5 19.Nf5) 19.f4 Qg6 20.Qa7 (20.ba7 Be7 21.Nb6 Ke6 22.a8Q Ra8 23.Qa8+-) 20...Be7?? (better 20...Kc8 21.Nc7 c5+-) 21.Qb7+- Ke6 (21...Ke8 22.Qc6 Bd7 23.Nc7 Kf8 24.Qa8 Ne8 25.Ne8 Be8+-) 22.Nc7 Kd7 23.Nd5 Ke6 (23...Kd8 24.Qe7 Kc8 25.Qc7) 24.Qe7 1–0. MARYMARY – silkcut, ChessWorld.net, 2011.

5.e3 b6?? 6.ed4+- ed4 7.Qf3 Nf6 8.Qa8 (8.Qa8 Be7 9.Bd4+-) 1–0. Van Rooijen,Peter – Yangibayev,Rustam, BI–2007–P–00005, 2007.

5.Nf3 Nf3+= 6.ef3 c6 (6...Qe7 7.Nc3=) 7.d4= cb5 (7...ed4 8.Bd4 Bf5 9.Nc3=) 8.cb5 Qb6 (8...Qe7 9.Qe2=) 9.Nd2 (9.de5 de5 10.Be5 Be6+=) 9...ed4= 10.Bd3 Bd7 (10...d5 11.Qa4+=) 11.Nb3+/- Attacks the isolani on d4 11...Bb5?? (better is 11...Nf6+/-) 12.Bd4+- Qa6 (12...Qc7 13.Bb5 Kd8+-) 13.Qe2 Be7 (13...Ne7 14.Bb5 Qc6 15.Na5+-) 14.Bb5 Qb5 15.Qb5 Kd8 16.Bg7 Bf6 17.Nc5! Bg7 (17...dc5 18.Rd1) 18.Qd7# 1–0. Degterev,Pavel – Techera,Marcos, BI–2007–P–00013, 2007.

6.a4 f5 7.Nf3 Nf6 8.h3 Be7 9.d4 e4 10.Nfd2 c6 11.d5 (11.Nc3!?=) 11...cd5=+ 12.cd5 Nc5 (12...Nd5 13.Ne4 Ne3 14.Qh5 g6 15.Qe2-/+) 13.Bc4 0-0 14.Bd4 b6 (14...Nfd7 15.0-0=) 15.Bc5 dc5?? (15...bc5 16.0-0=) 16.Nc3?? (better 16.d6 Kh8 17.de7 Qe7 18.Qb3+-) 16...Bd6=+ 17.Qe2 Qe7 (17...Be5 18.Ra3=+) 18.0-0-0 (18.Rc1 Rd8=) 18...a6 19.f4 (19.ba6 Nd7=+) 19...ab5 (19...ef3!? 20.gf3 ab5 21.Bb5-/+) 20.Bb5 Bd7 (20...Bb7 21.Nc4=+) 21.Rhg1 (21.Nc4 Rfb8=+) 21...Bb5 22.Qb5 Qb7 (better 22...c4!?=+) 23.g4+= Rfc8 (better 23...fg4!? 24.hg4 Rfd8+= (24...Nd5? 25.Qb3+-)) 24.gf5 Ra5 (24...Nd5?? 25.Qc4 (25.Nce4?! Be7+/-; worse 25.Nde4 Bf4 26.ef4 Nc3 27.Nc3 Qf3+-) 25...Kh8 26.Nd5+-) 25.Qe2 (better 25.Qc4 Qe7 26.Rg2+/-) 25...Rca8? (25...c4 26.Nde4 Ne4 27.Ne4+/-) 26.Qg2?? (26.Nc4 Qe7 27.Na5 ba5+-) 26...R8a7?? (better 26...Ra4 27.Na4 Ra4=) 27.Nde4+- (worse 27.Nce4 Ne4 28.Qe4 Bf8 29.Qe6 Kh8+-) 27...Ne4 28.Qe4 (28.Ne4 Ra4 29.Nd6 Ra1 30.Kd2 R1a2 31.Ke1 Rg2 32.Rg2 Qe7-+) 28...Qe7 (28...Qb8 29.f6 g6 30.Qe6 Kh8 31.f7+-) 29.Qe7 (29.Qe6!? Qe6 30.fe6 Ra8+-) 29...Re7 (29...Be7?? 30.e4+-) 30.Rg3 Rf7 31.Rdg1 c4 32.Kb2 Bb4 (32...Kf8 33.Kc2+-) 33.f6! g6 (33...Rf6 34.Rg7 Deflection) 34.f5 (34.e4 Rf6 35.Rg4 Bc5+-) 34...Rf6+/- 35.h4?? (better 35.Rg5!? Kf8 36.e4+/-) 35...Bc3 (better 35...Rf5!? 36.e4 Rf2 37.Kb1 Rh2=+) 36.Kc3= Rf5 37.h5 (better 37.e4 Rf4 38.h5 Re4 39.hg6=+) 37...Rh5-/+ (37...Rfd5?! 38.hg6 Ra4 39.gh7 Kh8 40.e4=) 38.Kc4 Ra4 (38...Rh4 39.Kc3-/+) 39.Kb5 Ra5 40.Kb6 Rad5 41.Kc6 Rde5 42.Kd6 Re8 43.Rf3 Ra8 44.Rgf1 Ra6 45.Ke7 (45.Kc7!?-/+) 45...Re5-+ 46.Kd7 Kg7 (better 46...g5-+) 47.Rf7= Kh6 48.Rh1 Kg5 49.Rg1 Kh4 50.Rh1 (better 50.Rh7 Rh5 51.Rh5 Kh5 52.e4=) 50...Kg3-/+ 51.Rf4? (better 51.Rfh7 Re3 52.R7h6-/+) 51...Re3-+ 52.Rg1 (52.Rfh4 h5 53.R1h3 Kf2 54.Rh2 Kf3 55.R2h3 Ke2 56.Rh2 Kd3 57.Rb2-+) 52…Kf4 0-1. kasperoff (1665) - RobertT74 (2245), Hourly SuperBlitz Arena, lichess.org, 2018.

6.a4 Nf6 7.Nc3 Be7 8.d3 b6 9.Nf3 Bb7 10.Be2 0-0 11.0-0 Nd7 12.d4+= e4 13.Nd2 f5 14.f3 Nf6 15.Qc2+/- Ng5 16.d5 ef3 17.gf3 Bc8 18.Kh1 Nh5?? 19.f4+- Nh3 20.Bh5 Bh4 21.Nf3 g6 22.Qg2 Kh8 23.Qh3 1–0. Fredek (2065) – Willi winzig (1640), Freundschaftspartie, 5m + 0s, 2006.

6.Nc3 b6 7.a4 a5 8.Qf3 Bd7 9.h4 Be7 10.g3 Nh6 11.Bd3 0-0=+ 12.Bc2 Qe8 13.Nh3 Qd8 14.0-0-0 c5 15.Qe4 g6 16.Nd5 Ng7 17.Ng5 Re8 18.Qd3 Bg5? 19.hg5+- Nhf5? 20.g4 Ne7 21.Rh7! Nd5 22.Rdh1 Kf8 23.f4 Bg4 24.Qd5 Be6 25.Qd3 Bf5 26.e4 Be6 27.Qg3 Nh5 28.R7h5! gh5 29.f5 f6? 30.g6 Qd7?? 31.Rh5 Bg8+/- 32.Qh4 Qe7 33.d3 Qg7 34.Bc3 Rad8?? 35.Bd2+- Re7 36.Bh6 Qh6 37.Rh6 Rdd7 38.Kb2 Kg7 39.Rh8 Kf8 40.Qf6 Ke8 41.Bd1 Kd8 42.Bg4 Kc8 43.Qe7! Re7 44.Rg8 Kd7 45.f6 Re6 46.Rd8! Kc7 47.Rd7! Kc8 48.Rd6 Kc7 49.f7 Kd6 50.f8Q Re7 51.g7 Kc7 52.Qe7 Kb8 53.g8Q# 1–0. Martinez Rodriguez,Ezequiel (1910) – Perez Torres,Samuel, Gijon Spain, 2007.

6.Nc3 c6 7.Nge2 Nf6 8.d4 ed4 9.Nd4 Nd4 10.Qd4 Be7 11.Bd3 Bd7 12.0-0 Qc7 13.Ne4 Ne4 14.Qg7+- 0-0-0 15.Be4 Rdf8 16.bc6 Bc6 17.Qg4 Bd7 18.Qf3 Bc6? 19.Bh8 Rh8 20.Bc6 Qc6 21.Qf7 Qe4 22.Rac1 Kd7 23.c5 dc5 24.Rc5 Rf8 25.Rd1 (25.Rd1 Qd5 26.Rdd5) 1–0. Trkn – guest6367, ICC, 2004.

6.Nc3 g6 7.Nf3= Bg7 8.Qc2 (8.d4 ed4 9.ed4 Nf6=) 8...Ne7 9.Be2 0-0 (9...Nf5 10.0-0=) 10.0-0 f5 11.Rad1 g5 (11...e4 12.Ne1=) 12.Nd5 (12.d3 g4 13.Nd2 a6=) 12...Ng6 (12...g4 13.Ne1=) 13.d4 g4 14.Ne1 ed4 (14...c6 15.Nb4+=) 15.ed4 (15.Bd4 Nd4 16.ed4 Be6=) 15...Qh4 (15...a6 16.a4+=) 16.g3 (16.f4 g3 17.hg3 Qg3+=) 16...Qh3= 17.f4 gf3 18.Bf3 f4 19.Qg2 Qg2+= 20.Ng2 fg3 21.hg3 Ng5 22.Bh5 Bd7 23.Ngf4 Nh3 24.Nh3 Bh3 25.Rfe1 c6 26.bc6 bc6 27.Nc7 Rac8 28.Ne6 Be6 29.Re6 Rf6 30.Bg4 Rb8 31.Ba3 Rd8 32.Kg2 Re6 33.Be6 Kh8 34.Rd2 Nf8 35.Bf5 Ng6 36.Kf3 Ne7 37.Bc2 Rf8 38.Kg4 Nc8 39.d5 cd5 40.cd5 Nb6? 41.Bd6+/- Rd8 42.Bc7 Rd5 43.Re2 Nd7 44.Re8+/- Bf8 45.Bd8 Kg7 46.Bb3 Re5 47.Re5 Ne5 48.Kf5 Nc6 49.Bf6 Kh6 50.g4 Ne7 51.Ke6 Ng6 52.Bd1 Nf4 53.Kf7 (53…Ne6 54.Ke6+-) 1–0. Ivlev,Valentin (2310) – Lipskaya,Inna, RUS–Cup6 Krasnodar, 1997.

6.d4 Be7 7.Nc3 (7.de5 de5 8.Qd8 Bd8 9.Be5 Nf6+=) 7...c6 (7...ed4 8.ed4 Nf6 9.Nf3=) 8.d5 (better 8.de5!? de5 9.Qd8 Bd8 10.Nf3+=) 8...cd5=+ 9.cd5 Nc5 10.Bc4 b6 (10...Qa5!? 11.Rc1 Nf6=+) 11.Nge2 f5 Black plans e4 (11...Nf6 12.0-0=) 12.0-0 Nf6 Black intends e4 13.f4 e4 (13...0-0!?+=) 14.Nd4+/- Ng4 (14...Qc7 15.Rc1+/-) 15.Qe2 (15.Qd2 Qc7 16.Rac1 0-0+/-) 15...0-0 16.Nc6 (16.Ne6!? Be6 17.de6+-) 16...Qe8 17.Nd1 (17.h3 Nf6+/-) 17...Bh4+= 18.g3 Bf6 19.Bf6 Rf6 (19...Nf6 20.Nc3=) 20.Nf2 (20.h3 Nh6+=) 20...h5 (20...Nf2 21.Rf2 a6 22.Rff1=) 21.Ng4+= hg4 22.a4 Bb7 23.Ra2 Kf7 24.Rfa1 Rh6 25.a5 Bc6?? (better 25...Rh8+=) 26.dc6+- (26.bc6?! Qd8+/-) 26...Ke7 (26...Kg6 27.ab6 a5 28.Ra5+-) 27.ab6 ab6 (27...a5 28.b7 Nb7 29.cb7 Rb8+-) 28.Ra8 Qh5 29.R1a7 Kf6 (29...Nb7 30.Rb7 Kf6 31.Qb2 Kg6 32.Rg7) 30.Qb2 Kg6 31.Rg7 (31.Qg7?!=) 1-0. bragcat (2105) - Bushwacker (1820), ChessWorld.net, 2011.

6.d4 Nf6 7.Nf3 ( 7.de5!? Ne4 8.Bd3+=) 7...e4=+ 8.Nfd2 d5 (8...Be7 9.Nc3 Ng5 10.Nd5=) 9.cd5 Qd5 10.Nc3 (10.Bc4 Qd6=) 10...Qf5 11.f3 ( 11.d5 Nc5 12.Nc4=) 11...Ng5 (11...Qg5 12.Qe2 Qh4 13.g3 ef3 14.Nf3= (< 14.gh4 fe2 15.Be2 Bb4=+; < 14.Qf3 Qh6=)) 12.fe4 ( 12.h4!? Ne6 13.g4+/-) 12...Nge4= 13.Nce4 (13.Nde4 Ne4 14.Qc2 Bb4+-) 13...Ne4 14.Ne4 Qe4 15.a3 (15.Qf3 Bb4 16.Kf2 Qc2 17.Qe2 Qe4=) 15...Be7 ( 15...Qe3 16.Qe2 Qe2 17.Be2 Be6–/+) 16.Rg1?? ( 16.Qf3 Bh4 17.Kd2=) 16...Qe3-+ 17.Qe2 Qg1 18.0-0-0 (18.Qe5 Bg4-+) 18...Qh2 19.Re1 Qf4 20.Kb1 (20.Qd2 Qd6-+) 20...Be6 (20...Bf5 21.Ka1 Qd6 22.Qf3-+) 21.d5 Qf5 22.Ka1 Qd5 23.Be5 (23.Bg7 Rg8 24.Rd1 Qb3-+) 23...0-0-0 (23...Qb3 24.Qb2 Qa4 25.Bc7 Ba3 26.Re6 fe6 27.Qe2 Bd6 28.Kb2 Qa3 29.Kc2 Qa2 30.Kc3 Qe2 31.Be2 Bc7 32.Bg4-+) 24.Qc2 Rd7 25.g3 (25.Bg7 Rhd8 26.Qf2 Qb3-+) 25...Rhd8 ( 25...f6 26.Bg2 Qb5 27.Bf4-+) 26.Bf4 (26.Bg7 Ba3 27.Bf6 h5-+) 26...g5 (26...Bf6 27.Kb1-+) 27.Bc1 Bf6 28.Bb2 Qa2# 0–1. Dopper,Johan – Bom,Jan, 1994.

6.Nf3 Nc5 7.d4+= Ne4 8.de5+/- Bg4 9.h3 Bf3 10.gf3 Nc5 11.ed6 Bd6?? 12.Bg7+- 1–0. Wall,Bill – MPO, internet, 2004.

6.Nf3 Bd7 7.d4 Nf6 (7...ed4!? 8.Nd4 Qg5=) 8.de5+/- de5 9.Ne5 Bb4 10.Bc3 Bc3 11.Nc3 0-0 12.Bd3 Qe7 (12...Nc5 13.Nd7 Qd7 14.Bc2+/-) 13.0-0 Rad8 14.Qc2 h6 15.Nd7 (15.Rfd1 Bc8 16.Nd5 Nd5 17.cd5 Nc5+/-) 15...Rd7 16.Bf5 Rfd8 17.Rfd1 g6 18.Bh3 (18.Rd7!? Rd7 19.Bd3+/-) 18...Rd1+= 19.Rd1 Ng5 20.Rd8 Qd8 21.f4 (21.Qe2 c6+=) 21...Nh3= 22.gh3 Qe7 23.Kf2 (23.Qd2!?+=) 23...Qe6= 24.Qd3 (24.Qe2 Qh3 25.Kg1 c6=+) 24...Qh3=+ 25.Qd4 (25.Qd8 Kg7 26.Ke2 Qg2 27.Kd3 Qf1 28.Kd4 Ng4 29.Qc7 Nf2 30.Qe5 Kh7=) 25...Qh2 (25...Ng4 26.Ke2-/+) 26.Ke1 (26.Kf3 Qh5 27.Kf2 Qf5-/+) 26...Qg3 (26...Ng4!? 27.Ne2 Qh1 28.Kd2 Qb1-/+) 27.Kd2=+ Qf2 28.Ne2 Ng4 Attacking the backward pawn on e3 29.Qd8 (29.Qa7 h5=) 29...Kg7 (29...Kh7 30.Qe7 Kg7 31.Qe4-/+) 30.Qe7 (30.Qd4 Kh7 31.Qa7=+) 30...Nf6 (better 30...Qf1!?-/+) 31.Qc7= Ne4 32.Kd3 Nf6 (32...Qf3 33.Qe5 Nf6 34.Qd4=) 33.Qe5?? (better 33.Qb7 g5 34.fg5 (34.Qa7?! Qf1+=) 34...hg5 35.Qa7+/-) 33...Qe1= 34.Qc3 (better 34.Nc3!?=) 34...Qd1=+ 35.Qd2 Qb1 (35...Qb1 36.Qc2 Qc2 37.Kc2 Ne4=+) 0-1. ClayPigeons (2185) - Dakods_16 (2195), Rated Bullet game, lichess.org, 2020.

6.Nf3 Ne7 7.Be2 g6 (7...e4 8.Nd4=) 8.0-0 Bg7 9.d4 e4 10.Nfd2 f5 11.a4 0-0 12.Nc3 Re8 13.Rc1 Nf8 14.Qb3 Be6 15.Nd5 b6 (15...a6 16.Ne7 Qe7 17.b6+=) 16.Nb4 Bf7 (16...a5 17.Nd5+/-) 17.d5 h5 (17...Bb2!? 18.Qb2 Nd7+/-) 18.Bg7 Kg7 19.Qc3 Kh7 20.Nb3 Ng8 21.Nd4 Qf6 22.Ndc6 Qc3 23.Rc3 Nf6 (23...Ne7 24.Nd4+/-) 24.Na6+- Rec8 25.Ne7 Re8 26.Nc6 Rec8 27.a5 N6d7 (27...Ng8 28.Ra1+-) 28.Ra1 Ne5 (28...Nc5 29.Ne7 Na6 30.Nc8 (30.ba6?! Re8 31.Nc6 Nd7+=) 30...Rc8 31.ab6 cb6 32.Ra6 (worse 32.ba6 Nd7+/-) 32...Bd5 33.Ra7 (33.cd5?! Rc3 34.Ra7 Kh6+/-) 33...Kh6 34.Rc1+- (34.cd5 Rc3 35.Rb7 Rc1 36.Bf1 Rd1+=)) 29.Ne7 Re8? (29...h4+-) 30.Nc7 Re7 31.Na8 ba5 (31...Rb7 32.ab6 ab6 33.Rca3+-) 32.Ra5 f4 (32...Kh6 33.Rca3 g5 34.Ra7 Ra7 35.Ra7+-) 33.ef4 Ned7 (33...Nd3 34.g3 Nc5 35.Rca3+-) 34.Ra7 Kg7 35.b6 (better 35.Nb6 Re8 36.Nd7 Re7+-) 35...Nb6 (35...Re8+-) 36.Re7 Na4 (36...Nbd7 37.Nc7 Kf6 38.Re4+-) 37.Ra3 Nc5 38.Raa7 Nfd7 39.Red7 Nd7 40.Rd7 Kf6 41.Rf7! Kf7 42.Nb6 Ke7 43.f3 (better 43.Bd1 h4+-) 43...Kf6 (43...e3+-) 44.fe4 g5 45.g3 (45.c5 dc5 46.e5 Kg6+-) 45...g4 46.Kf2 (better 46.c5 dc5 47.d6 Ke6+-) 46...Ke7 47.Ke3 Kd8 48.Kd4 Kc7 49.c5 (49.c5+-) 1-0. BeepBeepImAJeep (2725) - IRunThisShip (2230), lichess.org, 2016.

6.Nf3 Nf6 7.Nc3 e4 8.Ng1 Nc5 9.d4 ed3 10.Bd3 Bg4 11.Be2 Qd7 (11...Be6 12.Nf3=) 12.Bf3 (12.Nd5 Be2 13.Nf6 gf6 14.Ne2+= (worse 14.Ke2 Qg4 15.Kf1 Qc4 16.Qe2 Qe4=+)) 12...Qe6 (12...Qf5!? 13.e4 Bf3 (13...Nce4? 14.Ne4 Bf3 15.gf3+-) 14.ef5 Bd1 15.Rd1 Be7=) 13.Nd5= Bf3? (13...Nd5 A) 14.Bd5? Bd1 15.Be6 Nd3 (15...fe6?! 16.Rd1 a6 17.a3-/+) 16.Kd2 Nb2-+ (16...fe6?! 17.Kd3 Bh5 18.e4=); B) 14.Qd5 Bf3 15.Nf3 Qd5 16.cd5 Nd3 17.Kd2 Nb2-/+; C) 14.Bg4 Qe4 15.Qd5 Qg4 16.Nh3=) 14.Nf3 (better 14.Nc7!? Kd7 15.Ne6 Bd1 16.Nc5 dc5 17.Rd1 (worse 17.Kd1 Ne4 18.Ke2 Nd6+/-) 17...Ke7 18.a4+-) 14...Nd5+= 15.cd5 (15.Qd5 Qd5 16.cd5 Nd3 17.Kd2 Nb2-/+) 15...Qg6 16.0-0 Be7 17.Bd4 Ne4 (17...0-0 18.Qb1+=) 18.Rc1 Bd8 19.Qb3 b6 (19...0-0 20.a4+/-) 20.a4 (20.Rc6 0-0+/-) 20...0-0 21.Rfd1 (21.Qc4 Nc5+/-) 21...Nc5 22.Bc5 dc5 23.Qd3 (23.Qc4!?+/-) 23...Qd3= 24.Rd3 Bf6 (24...a6 25.e4=) 25.d6 (25.e4 Rfe8 26.Re3 a6+=) 25...cd6= 26.Rd6 Rfd8 27.Rcd1 Rd6 28.Rd6 Rd8 29.Rd8 Bd8 30.Ne5 Bf6 (30...Bc7!? 31.Nc6 c4+=) 31.Nc6+/- c4 32.Kf1 (32.Na7?? c3 33.Nc6 c2-+) 32...Kf8 33.Na7 Ke7? (33...Be5 34.Nc6 Bd6 35.h3+-) 34.Ke2 (better 34.Nc8 Ke6 35.Nb6+-) 34...Kd6+/- 35.Nc6 Kc5 36.a5?? (better 36.e4+/-) 36...ba5-+ 37.Na5 Kb5 38.Nb7 Kb4 (better 38...Be7 39.Kd2 Kb6-+) 39.Kd2 Kb3 (39...Be5 40.Nd8 Kb3 41.Nc6 c3 42.Kc1 Bh2 43.Nd4 Kc4 44.Kc2-+) 40.Nc5 (better 40.Na5!? Kb4 41.Nb7=) 40...Kb2-/+ 41.Na4 Kb3 (41...Ka3!? 42.Nc3 Kb3-/+) 42.Nc5=+ Kb2 43.Nd3 (43.Nd3 cd3 44.Kd3-+). dannysmet (2010) - jjsing (2030), Rated Blitz game, lichess.org, 2020.

6.Nf3 Nf6 7.Be2 Be7 8.0-0 Nc5 9.Nc3 Bf5 10.d4 ed4 11.Nd4 Bg6 12.a4 0-0 13.f4 Nfe4?? 14.f5+- Bf5 15.Rf5 Nc3 16.Bc3 Ne4 17.Qc2 Nc3 18.Qc3 Bf6 19.Qd3 c5 20.bc6 bc6 21.Rb1 c5 22.Bf3 cd4 23.Ba8 Qa8 24.ed4 a5 25.Rfb5 Re8 26.c5 dc5 27.dc5 h6 28.Qd7 Rd8 29.Qb7 Bd4 30.Kh1 Qb7 31.Rb7 Kh7?? 32.c6 Bc3 33.c7 Rc8 34.Rc1 Be5 35.Rb8! Rc7 36.Rc7 Bc7 37.Rb7 Bd6 38.Rf7 Kg6 39.Rd7 Bb4 40.g4 Kf6 41.Kg2 g5 42.Kf3 Ke5 43.Ke3 Bc5 44.Kd3 Bb4 45.Kc4 Kf4 46.Rd4 Ke5 47.h3 Be1 48.Rd5 Kf4 49.Rd6 Bh4 50.Rh6 Kg3 51.Kb5 Kh3 52.Ka5 Kg4 53.Kb5 Bf2 54.a5 Kf5 55.a6 g4 56.Rb6?? Bb6= 57.Kb6 g3 ½–½. gtate (1710) – wmalone (1720), net–chess.com, 2002.

7.Qc2 c5 8.Bd3+= g6 9.Nge2 Bg7 10.0-0 0-0 11.f4 Ng4 (11...ef4 12.Nf4 Ng4 13.Be2=) 12.f5+- Ng5 (better 12...Nc7+-) 13.h4?? (better 13.Ng3+-) 13...Qf6?? (better 13...e4 14.hg5 ed3 15.Qd3 Qg5–/+) 14.hg5 (better 14.fg6 Qd8 15.gh7 Kh8 16.hg5 Qg5 17.Rf3+-) 14...Qg5 15.Rf3 Bf5? (15...Qh4 16.Rh3 Qf2 17.Kh1 Bf5 18.Bf5 Qf5 19.Qf5 gf5+-) 16.Bf5 (16.Rf5?! gf5 17.Bf5 Qh4+-) 16...h5 (16...gf5 17.Qf5 Qf5 18.Rf5 a6+-) 17.Ne4 (17.Bg4 Qg4 18.Nd5 f5+-) 17...Qh4 (17...Qe7 18.Bg4 hg4 19.Rf2+-) 18.Rh3 Qe7 (18...Qd8 19.Bg4 hg4 20.Rh1+-) 19.Bg4 hg4 20.Rh2 f5 21.Nf2 (21.N4c3 Qd7+-) 21...Rf6 Black prepares e4 (21...e4 22.Nd1+-) 22.g3 (22.Nd3 Rf7+-) 22...Raf8 (22...Rf7 23.Kg2 a6 24.b6+-) 23.Rf1 (23.Nc3 R6f7 24.Nd5 Qg5+-) 23...g5 (23...Qe6 24.Rc1+-) 24.Qd3 (24.Nc3 Rh6+-) 24...Re6 (24...a6 25.Nc3 Qe6 26.Nd5+-) 25.Ng4 e4 (25...Qf7 26.Qd5+-) 26.Qc2 (better 26.Qd5 Qf7 27.Bg7 Kg7 28.Nd4+-) 26...fg4 27.Bg7 (27.Rf8 Qf8 28.Rf2 Qe7 29.Bg7 Kg7+-) 27...Qg7 (27...Rf1 28.Kf1 Qg7 29.Nc3+-) 28.Qc3 (28.Rf8 Qf8 29.Rf2 Qg7+-) 28...Ref6 (28...Rf3 29.Qg7 Kg7 30.Nc3+-) 29.Rf6 Rf6 30.Rf2 Kf7 (30...Re6 31.Qa5 b6 32.Qa6+-) 31.Rf6 (31.Qf6!? Qf6 32.Nc3 Ke6 33.Rf6 Kf6 34.Ne4 Ke5 35.Ng5 Kf6 36.Ne4 Ke5+-) 31...Qf6 32.Qf6 Kf6 33.Nc3 a6 (33...Kf5+-) 34.ba6 (34.Ne4 Ke6 35.Ng5 Kf6 36.Ne4 Ke6 37.ba6 ba6+-) 34...ba6 35.Ne4 Ke5 36.d3 d5 (36...Ke6 37.Ng5 Kf6 38.Ne4 Ke5 39.Nf2+-) 37.cd5 Kd5 38.Ng5 c4 (38...Ke5+-) 39.dc4 (39.e4 Kd6 40.dc4 a5+-) 39...Kc4 40.e4 Kd4 41.Kf2 Ke5 42.Ke3 Kf6 43.Kf4 a5 44.e5 Ke7 (44...Kg6 45.Ne4 Kg7 46.Kg5 Kf7 47.Kf5 Ke8 48.Ke6 Kd8 49.Kf6 Kd7 50.e6 Kc7 51.e7 Kd7 52.Ng5 Kc7 53.e8Q Kb6 54.Ne6 a4 55.Qa4 Kb7 56.Qb5 Kc8 57.Qc6 Kb8 58.Nc5 Ka7 59.Qb7) 45.Kf5 White plans e6 45...a4 (45...Kd7 46.e6 Ke7 47.Kg6 Kd6 48.Kf6 Kc5 49.e7 Kb4 50.e8Q Kc4 51.Qa4 Kc3 52.Ne4 Kb2 53.Qa5 Kb1 54.Qb4 Ka1 55.a4 Ka2 56.Nc3 Ka1 57.Qb1) 46.e6 Kd6 (46...a3 47.Nf7 Kf8 48.Kf6 Ke8 49.e7 Kd7 50.Ng5 Ke8 51.Ne4 Kd7 52.Kf7 Kc6 53.e8Q Kb6 54.Ke6 Kb7 55.Qb5 Kc7 56.Nd6 Kd8 57.Qd7) 47.Kf6 Kc5 (47...Kc6 48.e7 Kd7 49.Kf7 Kc6 50.e8Q Kc5 51.Qa4 Kb6 52.Ne6 Kb7 53.Qb5 Ka7 54.Nc5 Ka8 55.Qb7) 48.e7 a3 (48...Kc4 49.e8Q Kc5 50.Ne4 Kd4 51.Qa4 Ke3 52.Qc2 Kd4 53.Kf5 Ke3 54.Ke5 Kf3 55.Qf2) 49.e8Q Kb4 (49...Kc4 50.Qe4 Kc3 51.Qd5 Kc2 52.Ne4 Kb1 53.Qd2 Ka1 54.Qb4 Ka2 55.Nc3 Ka1 56.Qa3) 50.Qb8 (50.Qc6 Ka5 51.Ne4 Kb4 52.Nd6 Ka5 53.Qb5) 50...Kc3 (50...Kc4 51.Ke5 Kd3 52.Ne4 Ke2 53.Qb1 Kf3 54.Qc2 Ke3 55.Qd2 Kf3 56.Qf2) 51.Ke5 Kd3 52.Qb3 Kd2 (52...Ke2 53.Kf4 Kd2 54.Ne4 Kc1 55.Qc3 Kb1 56.Nd2 Ka2 57.Qb3 Ka1 58.Qa3) 53.Ke4 (53.Ne4 Kc1 54.Qc3 Kb1 55.Nd2 Ka2 56.Qb3 Ka1 57.Qa3) 53...Ke2 (53...Ke1 54.Qe3 Kf1 55.Nh3 Kg2 56.Nf4 Kf1 57.Qd2 Kg1 58.Qg2) 54.Qe3 Kf1 (54...Kd1 55.Ne6 Kc2 56.Nd4 Kb2 57.Qb3 Kc1 58.Qc2) 55.Qd2 Kg1 56.Qe2 (56.Ne6 Kf1 57.Nf4 Kg1 58.Qg2) 56...Kh1 57.Kf4 (57.Ne6 Kg1 58.Nf4 Kh1 59.Qg2) 57...Kg1 58.Kg4 Kh1 59.Kh3 Kg1 60.Qe1 1–0. Eiji Honda,Helcio (1795) – Martinez,Rodrigo Galvao, Botafogo Brazil, FEXERJ Open, 2015.

7.d4 ed4 8.ed4 Be7 9.Nf3 0-0 10.Bd3 c5 11.0-0+= cd4 12.Ne2 b6 13.Re1 Bb7 14.Ned4 Nd4 15.Nd4 d5 16.Nc6 Bc6 17.bc6 dc4 18.Bc4 Qc7 19.Qf3 Rfe8 20.g3 Bc5 21.Bf6+- Re1?? 22.Re1 gf6 23.Qf6 Rd8 24.Re5 Bd6 25.Rg5 Kf8 26.Qg7 Ke7 27.Qf7# 1–0. qyuo – mxmw, internet, 2009.

7.d4 Be7 8.de5 de5 9.Qd8 Bd8 10.Rd1 0-0 11.Nf3+= e4 12.Nd2 Nc5 13.Ba3+/- Nd3 14.Bd3+- ed3 15.Bf8 Kf8 16.Nf3 Bf5 17.Nh4 Be6+/- 18.Rd3 Bc4 19.Rd4 Be6 20.Nf3 Be7 21.Ng5+- Bf5 22.Ke2 h6 23.Nf3+- Bc5 24.Rc4 Bb6 25.Na4 Ba5 26.Nd4 Bd7 27.Nc5 Bg4 28.f3 Bh5? 29.g4 Bg6 30.Nb7 Bb6 31.Nc5 Rd8 32.Rd1 Nd5 33.Nde6 fe6 34.Ne6 Ke8 35.e4 Nf4 36.Nf4 Rd1 37.Kd1 Bf7 38.Nd5 Kd7 39.Nb6 cb6 40.Ra4 Kd6 41.Ra7 Bc4 42.Rg7 Ba2 43.Rg6 Kc5 44.Rh6 Kb5 45.f4 Bb1 46.e5 Ka4 47.Rb6 Be4 48.Rb8 Bf3 49.Kc2 Bg4 50.Rf8 Kb4 51.f5 Kc5 52.f6 Kd5 53.Re8 Bh5 54.Kd2 Ke4?? 55.Re7 Kf5 56.f7 Bf7 57.Rf7 Ke5 58.Ra7 Kf4 59.Ra5 Kg4 (59...Ke4 60.h4 Kf4 61.h5 Kg3 62.h6 Kf3 63.h7 Kf4 64.h8Q Kg4 65.Qh5 Kf4 66.Rg5 Ke4 67.Qg4#) ½–½. Sopermi (2220) – lasalle (2015), ajedrez21.com, 2001.

7.Be2 a6=.

7.Be2 Nc5 8.d4 ed4 9.ed4 Nce4 10.Nf3 Be7 11.0-0 Nc3 12.Bc3 0-0 13.Bd3 d5 14.c5 c6 15.a4 Qc7 16.Re1 Re8 17.Bd2 Bg4 18.Be2 b6 19.Bb4 bc5 20.dc5 Rad8 21.Qd4 Bf3 22.Bf3 Ne4 23.Be4 Bf6 24.Bh7 Kh7 25.Qd3 Kg8 26.Re8 Re8 27.a5?? Ba1 28.b6 ab6 29.ab6 Qf4 30.Qd2 Qd2 31.Bd2 Bd4 32.Be3 Be3 33.fe3 Re3 34.Kf2 d4 35.h4 Re7 36.Kf3 d3 37.b7 Rb7 0–1. mrkt – dave, itsyourturn.com, 2000.

7.Be2 g6 8.Nf3 Bg7 9.0-0 0-0 10.d3 Bd7 11.Qc2 c6 12.a4 b6 13.d4 ed4 14.Nd4 c5 (14...Nd4 15.ed4 d5 16.Rfe1+=) 15.Nc6 Bc6 16.bc6 Ng5 17.f4 Ne6 18.Rad1 Ne8 19.f5 N6c7 20.fg6 hg6 21.Nb5 Nb5 (better is 21...Qe7!?+=) 22.cb5+/- Bb2 23.Qb2 Nf6?? (better is 23...Qe7 24.Qb3 Rc8+/-) 24.Rf6 (24.Rf6 d5 25.Rf3+-) 1–0. Fournier,Frederic (2005) – J_klix01, Active, 2007.

7.Nge2 Be7 8.Ng3 g6 9.Nd5 0-0 10.Ne7 Qe7 11.Be2 b6 12.0-0 Bb7 13.a4 Rad8 14.a5 c6 15.ab6 ab6 16.bc6 Bc6 17.f4 e4 18.Qb1 h5 19.Bf6 Qf6 20.Ne4 Be4 21.Qe4 Rde8 22.Qb1 Rb8 23.f5 Qe5 24.fe6 fe6 25.Qg6 Kh8 26.Ra7 Rf1 27.Bf1 Qh2 28.Kh2 (28...Rb7 29.Ra8 Rb8 30.Rb8) 1–0. Bonetti,Shane – pedriko2, ICC, 2002.

7.Nf3 e4!? 8.Nd4 Nd4 9.ed4 d5=+7.g3 a6 8.Nge2=.

7.Nf3 g6 8.d4 ed4 9.Nd4 Qe7? (9...Bg7 10.Be2=) 10.Be2 (10.Nd5 Nd5 11.Ne6 (11.cd5?! Nd4 12.Bd4 Rg8+/-) 11...fe6 12.Bh8+- (12.cd5?! Bg7 13.Bg7 Qg7+=)) 10...Bg7 11.Ne6 (11.0-0 0-0+=) 11...Be6 (11...fe6 12.0-0=) 12.0-0 (12.Bf3 Rb8+=) 12...0-0 (12...Rg8 13.Rb1+=) 13.a4 (13.Nd5 Bd5 14.cd5 Rfe8+=) 13...Nd7 (13...Rfd8 14.a5=) 14.a5 (14.Nd5 Bd5 15.Bg7 Kg7 16.cd5 Nc5+=) 14...Ne5 (14...Qh4 15.Ra4=) 15.Nd5+= Qd7 16.Bd4 (16.a6!? b6 17.Bd4+/-) 16...c6= 17.bc6 bc6 18.Nb4 (better 18.Nf4=) 18...Nc4?? (better 18...c5 19.Be5 Be5-/+ (worse 19...de5 20.Qd7 Bd7 21.Na6+=)) 19.Bc4 (19.Bg7!? Ne3 20.fe3 Kg7+-) 19...Bc4+/- 20.Re1?? (20.Bg7 Rfc8 21.Bc3 Bf1+/-) 20...Rab8?? (better 20...c5 21.Bg7 Kg7=+) 21.Bg7+- Kg7? (better 21...Rb4!? 22.Bf8 Kf8+-) 22.Qd4 Kg8 23.Qc4 d5 (23...Rfc8 24.Rac1 d5 25.Qd4+-) 24.Qc6 Qc6 (24...Rfd8 25.Qc3+-) 25.Nc6 Rb7 26.a6 (26.Rad1 Rc8 27.a6 Rbc7+-) 26...Rc7 27.Nd4 (27.Rac1 Kg7 28.Nb4 Rfc8 29.Rc7 Rc7 30.Nd5 Rd7+-) 27...Rfc8 28.f3 Rc3 29.e4 R3c4 (29...de4 30.fe4 Rd8 31.Nf3+-) 30.Nb5 R4c5 31.Na7 Ra8 32.ed5 Ra7 33.Re8 Kg7 34.d6 Rd5 35.Re7 Ra8 36.d7 Rd8 37.a7 (37.a7 Kf6 38.Re2 R5d7 39.a8Q Ra8 40.Ra8+-) 1-0. MASZTALERZ (2240) - Artichoke96 (1820), Rated Classical game, lichess.org, 2016.

7.g3 a6 8.Nge2=.

7.g3 Bd7 8.Bg2= c6 9.a4 (9.Nge2 Qa5=) 9...Be7 10.Nge2 0-0 (10...Qa5 11.d3=) 11.0-0 Rc8 (11...Re8 12.f4=) 12.d4 (12.f4 Re8=) 12...ed4 (12...Re8 13.Qd3=) 13.Nd4+= Nd4 (13...Re8 14.a5+=) 14.Qd4 c5 (14...a5!?+=) 15.Qd3+- b6 16.Rad1 Be6 17.f4 Qc7 (17...Bg4 18.Rd2+-) 18.f5 Bd7 19.Nd5 Nd5 20.Qd5 (20.cd5?! c4 21.Qc2 c3=) 20...Bg5 (20...Rfe8 21.f6 Bf6 22.Bf6 gf6 23.Rf6+- (23.Qd6?! Bg4+-)) 21.Rd3 (21.Rf3 Rce8 22.Kf2 Bc8+-) 21...Rce8 22.f6 (22.e4 Rd8+-) 22...gf6 23.Rf6 (23.Rf6 Bf6 24.Bf6+-) 1–0. Sopko,CR (1930) – Rodrigues,J De Araujo (1805), 10th American Continental Championship, 2015.

7.g3 Be7 8.Bg2=+.

7.ed4 Nf6 8.d5 Nc5 9.Qe2 Qe7 10.Bf6 Qe2 11.Be2 gf6 12.Nf3 Rg8 13.0-0 Be7 14.Re1+= Bh3 15.Bf1 Kd7 16.Nbd2 Rg7 17.Nb3 Rag8 18.Nc5 dc5 19.g3 Bf1 20.Kf1 h5 21.Ke2 f5+/- 22.Rad1 Bd6 23.Kd3 f4 24.Ne5 Be5 25.Re5 fg3 26.hg3 Rg5 27.Rde1+/- Re5 28.Re5 Rh8 29.Re4 Kd6 30.Rf4 Ke7 31.a4 Rh7 32.a5 Kd6 33.Ke4 Ke7 34.Ke5 Rh6+/- 35.Re4 f6? 36.Kf5+- Kf7 37.b6! ab6 38.ab6 cb6 39.d6 Rh8 40.Re7 Kf8 41.Rb7 (41.Rb7 Rg8 42.Rb8 Kg7 43.Rg8 Kf7 44.d7 Kg8 45.Kg6 b5 46.d8Q#) 1–0. mtrc – JanosRekettye, internet, 2002.

7.ed4 Nf6 8.d5 Nc5 9.Nf3 Be7 10.Bd3 Bg4 11.0-0 0-0 12.h3 Bh5 13.Bf5 Nfd7 14.g4 Bg6 15.Bg6 fg6 16.Qe2 Bf6 17.Nc3 Ne5 18.Ne5 Be5 19.f4 Rf4 20.Rf4 Bf4 21.Ne4 Nd7 22.Rf1 Be5 23.Bc1 h6 24.g5 Bd4 25.Kg2 h5 26.Qd3 Bb6 27.Nf6 Nf6 28.gf6 Qd7 29.f7 Kf8 30.Qg6 Qe7 31.Qh5 Qe4 32.Kg3 Qe5 33.Qe5 de5 34.Ba3 (34…c5 35.bc6 Bc5 36.Bc5) 1–0. jasa – Tigran, ChessWorld.net, 2003.

7.ed4 Nf6 8.d5 Nc5 9.Nf3 Be7 10.Be2 0-0 11.Nc3 Re8 12.0-0 Nfe4 13.Ne4 Ne4 14.Bd3 Bf6 15.Bf6 Qf6 16.Qc2+= Bf5? 17.Rae1+- Qe7 18.Nd2 Qh4 19.Be4 Be4 20.Re4 Re4 21.Qe4 Qe4 22.Ne4 Re8 23.Re1 Kf8 24.Kf1 f5 25.Ng5 h6 26.Re8 Ke8 27.Ne6 g5 28.Nc7 Kf7 29.Ne6 Kf6 30.Nd8 b6 31.Nc6 f4 32.a4 Kf5 33.Na7 Ke4 34.c5! (34.c5 bc5 35.b6+-) 1–0. woschkat – johnb, net–chess.com, 2000.

7.Bd4 Nd4 8.ed4 Be6 =+.

7.Bd4 Nd4 8.ed4 Qe7 9.Be2 =.

6.a4 a6 7.Nc3 Be6 8.Bd3 ab5 9.cb5 c6 10.Nge2 Nf6 11.0-0 d5 12.Ng3 Ng3=+ 13.hg3 Bb4 14.Qc2 0-0 15.Ne2? e4-+ 16.Nf4 Bg4?? 17.Be2=+ Be2 18.Ne2 cb5 19.ab5 Ra1 20.Ra1= Qd7 21.Bf6+= gf6 22.b6 Rc8 23.Qb2 Qd6= 24.Rb1 Bc5 25.Nf4 f5 26.Nh5 d4= 27.Rc1 Qh6 28.Nf4 de3 29.de3+= Rc6 30.Nd5 Kf8?? 31.Qb5 Qd6= 32.Rd1 h5 33.Qa4 Kg7 34.Nc3 Qb8 35.Qa2 Bb6 36.Rd7 Qe8=+ 37.Rb7 Rc7 38.Rb6+/- Rc3 39.Qb2 Qe5+= 40.Rb5 Qf6 41.Rf5!?+= Qf5 42.Qc3 f6 43.Qc7 Kg6 44.Qc6 Qe5 45.Qc4 f5 46.Qg8 Kh6 47.Kh2 Qf6 48.f3 ef3 49.gf3+/- Qb2 50.Kh3 Qf6 51.f4 Qe7+/- 52.Qh8 Kg6 53.Qe5 Qe5+- 54.fe5 Kf7 55.Kh4 Ke6 56.Kg5 Ke5= 57.Kh5 Ke4?? 58.Kg5 Kf3?? 59.Kf5+- Ke3 60.g4 Kd4 61.g5 Kd5 62.Kf6 Kd6 63.Kf7 (63.Kf7 Kd7 64.g6+-) 1–0. foresight – berkins, internet, 2007.

6.Nc3 a6 7.Nf3 Nf6 (7...ab5 8.cb5 Nf6 9.Bd3 Be7 10.Qc2; 7...Ngh6 8.e4 Nh4 9.Nh4 Qh4 10.Nd5) 8.Bd3 ab5 9.cb5 Be7 10.Qc2.

6.Nc3 Nf6 7.Nge2 Be6 8.Nd5 Bd5 9.cd5 Nd5?? 10.e4+- Qd7 11.Qb3 Nd4 12.Bd4 ed4?! 13.Qd5 c5 14.bc6 bc6 15.Qd4 d5 16.Rc1 Ba3 17.Qg7 0-0-0 18.Rb1 de4 19.Nd4! Qd4 20.Ba6 Kd7 21.Qd4 Kc7 22.Rb7 Kc8 23.Ra7 Kb8 24.Qb6# 1–0. MrkT – rookie64, internet, 2005.

6.Nc3 Nf6 7.Nf3 Be7 8.a4 0-0 9.Bd3 e4 (better 9...Qd7=) 10.Ne4+/- h6 11.Qc2 b6 (11...Be6 12.0-0+-) 12.0-0 Ng4 13.Nc3 c6?? (13...g6+-) 14.Bf5 Nf6 (14...Bf5 15.Qf5 Qc8 16.Qf4+-) 15.bc6 g6 (15...Bf5 16.Qf5 Rc8 17.Nd4+-) 16.Bg6! Ne4 (16...fg6 17.Qg6 Double attack) 17.c7 Qc7 18.Qe4 f5 19.Qd5 Kg7 20.Nb5 Bf6 21.Bf6 Kg6 22.Nc7 Rb8 23.Qd6 Rb7 (23...Be6 24.Ne6 Kf6 25.Nf8 Kg7 26.Qe7 Kg8 27.Ne6 Rb7 28.Qb7 a6 29.Qg7) 24.Nh4 Kf7 (24...Kh5 25.g4! Kg4 26.Qf4 Kh5 27.Qf3) 25.Qe7 Kg8 26.Qg7 1-0. michaelbuss - Ronan mac, ChessWorld.net, 2006.

6.Bd3 Nf6 7.Bc2 (7.Ne2 a6= (7...g6 8.Nbc3 Bg7 9.Ng3 Ng3 10.hg3; 7...Be7 8.Nbc3 0-0 9.Ng3 Nh4 10.0-0) 8.Nbc3 ab5 9.cb5 d5 10.0-0; 7.Qc2 g6 8.Nf3 Bg7 9.Nc3 a6 10.e4; 7.Nc3 Qe7 (7...Be7 8.Nf3 a6 9.Qc2 g6 10.h3) 8.Qc2 g6 9.Nf3 Bg7 10.Nd5) 7...d5 (7...Nh4 8.Kf1+= (8.g3 Bg4 9.Qc1 Ng6 10.Nc3) 8...Bg4 9.Ne2 Be6 10.Nbc3) 8.cd5 (8.Be5 dc4 9.Nf3 (9.Nc3 Bd6 10.Nf3) 9...Ng4= (9...Bd6 10.Nc3) 10.Nc3) 8...Qd5 (8...Nh4 9.e4= (9.Nf3 Bg4 10.h3) 9...Bc5 10.g3) 9.f3 (9.Nf3 Bd7 (9...Bd6 10.Nc3) A) worse is 10.Ne5 Nh4=; B) 10.Bb3 Qb5 11.Ne5+= (worse is 11.Be5 Nh4 12.Nh4 Qe5+=); C) 10.Nc3+=) 9...Qb5?? (9...Qc5+= 10.Ne2) 10.Bc3 (better is 10.Ba4 Qa4 11.Qa4 Bd7 12.Qb3+-) 10...Qc4 (10...Bd7 11.a4 Qc5 12.Ne2–/+) 11.Qe2 (11.Be5!? Be7 12.Nc3+=) 11...Qh4–/+ 12.Qf2 (12.g3 Ng3! 13.Qf2 Nf5 14.Qh4 Nh4 15.Be5 Be6–/+) 12...Qf2 13.Kf2 Bc5?? (better is 13...Bd6–/+) 14.Be5+= Nd5 15.Bf5 Bf5 16.d4 Bb4?? (better is 16...Bb6 17.g4 Bb1 18.Rb1 f6=) 17.e4+- (17.Bg7 Rg8 18.Be5 Rg2 19.Kg2 Ne3 20.Kg3 Nc2+-) 17...Bc3? (better is 17...f6 18.Bg3 c5+-) 18.Nc3 Nc3 19.ef5 f6 20.Bc7 Rc8 (20...Nb5 21.Bf4 Nd4 22.g4+-) 21.Bg3 (better is 21.Ba5 Nd5 22.Ne2 Kd7+-) 21...Nb5 (21...Kd7 22.Ne2 Ne2 23.Ke2 Rc2 24.Kd3+-) 22.Ne2 Rc2 (22...b6 23.a4 Nc7 24.Rhc1+-) 23.Rhc1 0-0 (23...Rc1 24.Rc1 Kd7+-) 24.Rc2 Rd8 25.Nf4 (25.Rac1 h5+-) 25...g5 (25...b6 26.Re1 g6 27.d5+-) 26.Ne6 Rd5 27.Rc8 Kf7 28.Rc7! Ke8 (28...Nc7 29.Bc7 Combination) 29.Rb7 (29.Rb7 Rd7 30.Rb5+-) 1–0. Motruk,Artem – Kosov,Savva, 5th Stage of Mytischi Grand Prix Group, 2017.

6.Bd3 Qg5 7.g3= (7.Nc3 Qg2 8.Be4 Qg6 9.Nd5 Kd8 10.Qc2) 7...Nf6 (7...Qh6 8.Qc2 Qh5 9.Nc3 Nfe7 10.Qa4) 8.Nf3 Qg4 9.h3 Qh5 10.Nc3.

6.d4 e4 7.Ne2 d5 8.Nbc3 Bb4 9.Qa4+= Bc3 10.Nc3 c6? 11.bc6+- b6 12.cd5 Nf6 13.c7 (13.c7 Qd7 14.Bb5+-) 1–0. pcmvr (2530) – davidjensen (1745), net–chess.com, 2006.

6.d4 e4 7.Ne2 g5 8.Nd2+/- d5 9.Nc3 Bb4 10.Nd5 Bd2 11.Qd2+- Be6 12.Nc7! Qc7 13.d5 (13.d5 f6 14.de6+-) 1–0. pcmvr (2530) – davidjensen (1745), net–chess.com, 2006.

6.e4 Nd4 7.d3 Be6 8.Nf3 Bg4 9.Be2 Ne2 10.Qe2 Be7 11.0-0 Nf6 12.h3 Be6 13.Nbd2 0-0 14.a4 c5 15.Ng5 Bd7 16.f4 h6 (better is 16...ef4 17.a5 Re8=) 17.fe5+/- de5 18.Ngf3 Kh7 19.Rad1 Qa5 20.Ra1 Qb4?? (20...Qd8 21.a5 a6+/-) 21.Rfb1 (21.Be5 Qa5+-) 21...a6? (21...Qa5!?+/-) 22.Be5 (22.Ne5?! Qa5+/-) 22...Qa5 23.b6 (better is 23.Bf6 gf6 24.ba6 Qa6 25.a5+-) 23...Ba4?? (better is 23...Nh5+/-) 24.Nb3 (24.Rb3 Qd2 25.Nd2 Bb3 26.Nb3 g6+-) 24...Qb4 (24...Qb6 25.Ra4 Qe6 26.Qb2+-) 25.Qc2 (25.Nc1 Qa5 26.Rb3 Nh5+-) 25...a5?! (25...Ne4 26.de4 Rad8+-) 26.Bc3 Qb6 27.Ra4 Qc7 28.Rba1 b6 29.d4 Kh8 30.e5 Nd7 31.d5 Qb8 32.Qf5 Ra7 33.Rf1 f6 34.e6 b5 35.Ra5 Ra5 36.Na5 b4 37.Bb2 Nb6 38.Nc6 Qd6 39.Ne7 Qe7 40.Ne5! Kg8 41.Ng6 Qd6 42.Nf8 Nc4 43.Bf6! Qf8 44.e7 Qe8 1–0. Fournier,Frederic – COMP Arasan 1.3, Partie Libre (Blitz), 1996.

6.Nf3 Be7 7.e4 Nfh6 8.d4 ed4 9.Bd4 Bf6 10.Nc3 Bd4 11.Qd4 Qf6 12.Qf6 Nf6 13.Bd3 Kd7 14.a4 Nhg4 15.h3 Ne5 16.Nd5?? Nd3-+ 17.Ke2 Nf4 18.Nf4–/+ Ne4 19.Rhe1 h6 20.Kf1=+ Nc5 21.Nd5 Ne6 22.Rad1= c6 23.Nb4 Kc7 24.Nd4 Bd7 25.a5 g6 26.Ne6 Be6 27.f3? Bc4-+ 28.Kg1 Rhe8 29.bc6 bc6 30.Re8 Re8 31.Rc1 Bb5 32.Nd5 Kb7 33.Rb1 Kc8 34.Nf6 Re6 35.Ne4 a6 36.Rd1 Kc7 37.Nc3 d5 38.Rc1 d4 39.Nd5 Kd6 40.Nf4 Re3 41.Rd1 Ke5 42.g3 Rf3 43.Re1 Re3 44.Rc1 Rg3 45.Ng2 Rh3 46.Re1 Kf6 47.Re4 c5 48.Rf4 Ke5 49.Rf7 d3 50.Re7 Kd4 51.Nf4 Rg3 52.Kf2 Rg5 53.Ne6 Kc3 54.Ng5 hg5 55.Ke1 Kc2 56.Re3 d2 57.Kf2 d1N 58.Kf3 Ne3 59.Ke3 g4 60.Kf4 Kd3 61.Kg4 c4 (61...c4 62.Kg5 c3 63.Kf6 c2 64.Kg6 Bc6 65.Kh7 c1Q 66.Kg6 Be8 67.Kg7 Qg5 68.Kf8 Bg6 69.Kg7 Bh5 70.Kf8 Qf6 71.Kg8 Bf7 72.Kh7 Qg6 73.Kh8 Qg8) 0–1. vidyashankarh (1930) – otter (2095), net–chess.com, 2002.

6.Nf3 f6 7.e4+= Nd4 8.Nd4+/- ed4 9.Bd4 Ne7 10.f4 Ng6 11.f5+- Nf4? 12.Qf3 Ne6 13.fe6 Be6 14.Be2 Be7 15.0-0 0-0 16.Nc3 f5 17.ef5 Bf5 18.Qd5 Kh8 19.Rf5 Bf6 20.Bf6 Rf6 21.Rf6 Qf6 22.Rf1 Qe5 23.Qe5 de5 24.Bf3 c6 25.bc6 bc6 26.Bc6 Rc8 27.Bd7 Rd8 28.c5 h6 29.c6 Rb8 30.c7 Ra8 31.Rb1 Kh7 32.Rb8 Rb8 33.cb8Q e4 34.Bf5 g6 35.Qa7 Kg8 36.Bg6 e3 37.Qf7 Kh8 38.Qf8# 1–0. b4_player – opponent, gamecolony.com, 2007.

6.Nf3 Nf6 7.Nc3 c6 8.Qb3 cb5 9.Nb5 Be6 10.d4 ed4 11.Nbd4 a6 12.Bd3 Nd4 13.Bd4 Be7 14.0-0 0-0 15.h3 b5+= 16.Qc2 bc4–/+ 17.Bc4? Rc8-+ 18.Nd2 d5 19.Qa4 dc4 20.Rfc1 a5 21.Nc4 Bb4 22.a3 Rc4 23.Rc4 Bc4 24.ab4 ab4 25.Qb4 Bd5 26.f3 Be6 27.Qb2 Re8 28.h4 Nd5 29.Bg7 Qh4 30.Bd4 f6 31.e4 Nf4 32.Bf6 Qh6 33.Ra7 Bf7 34.Ra5 Nd3-+ 35.Qc3 Qc1 36.Qc1=+ Nc1 37.Kf2 h6 38.Ke3= Kh7 39.f4 Kg6 40.Bb2 Nb3 41.Ra6 Re6?? 42.f5+- Kg5 43.fe6 Be8 44.Ra8 Bc6 45.Rg8 Kh5 46.Bf6 Nc5 47.g4 1–0. gtate (1965) – tacitus (1945), net–chess.com, 2006.

6.Nf3 Nf6 7.Nc3 Be6 8.Bd3 Be7 9.Qc2 Qd7 10.h3+/- d5?? 11.cd5+- Nd5 12.Nd5 Ne3 13.Nc7 (13.Nc7 Kd8 14.Ne6 (14.Na8 Nc2 15.Bc2 Qc8=+; 14.de3 Qc7 15.Qd2 Bf6+-; 14.fe3 Qc7 15.Qc7 Kc7+-) 14...Qe6 15.de3 Bb4 16.Kf1+-) 1–0. pierre – romanus, internet, 2009.

6.Nf3 Nf6 7.Nc3 Be6 8.Bd3 Be7 9.e4 Nh6 10.0-0 0-0 11.h3 Kh8 12.Qe2 Qd7 13.Ng5 Nfg8 14.Ne6 Qe6 15.Nd5 Rac8 16.Qe3+/- c6 17.Nc3 b6 18.a4 f5 19.a5 f4 20.Qf3 Rf6 21.ab6+- ab6 22.bc6 Rc6 23.Nd5 Rf8 24.Ra7 g5 25.Rfa1 g4 26.hg4 Ng4? 27.Qh3 Rf7 28.f3 Rg7 29.fg4 Rg4 30.Nf4! Rf4 31.Qe6 (31.Qe6 Rf6 32.Qd7+-) 1–0. pierre – yessmate, internet, 2008.

6.Nf3 Nf6 7.Be2 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Be7 11.0-0 0-0 12.d3 e4 13.de4 Ne4 14.Nbd2 Nd2 15.Qd2 Be6 16.Bc3 Bf6 17.Ra1 Qe7 18.Ra7 Rb8 19.Bd3 Nh4 20.Nh4 Bh4 21.Qe2 Qg5? 22.Qf3 Qe7? 23.Rb7+- Ra8 24.Qc6 Bf6 25.Bf6 Qf6 26.Ra7!! Rf8 27.Qc7 Bg4 28.b6 Qc3 29.Bf1 Qe1 30.Ra2 g6 31.b7 (31.b7 Kg7 32.Qd6+-) 1–0. agrillage – QueenAmyitis, internet, 2005.

6.g3 d5 7.Be5+= Qe7 8.Nf3+/- d4 9.Bd4+- c5 10.bc6 bc6 11.Bg2 c5 12.Bb2 Rb8 13.Bc3 Bb7 14.Qa4 Qd7 15.Qd7 Kd7 16.Ne5 Ke6 17.Bb7 Rb7 18.0-0 f6 19.Nf3 Nd6 20.d3 g6 21.Nbd2 Bg7 22.Rfb1 Rb1 23.Rb1 Ne8 24.Rb7 Ne7 25.Ra7 f5 26.Ng5 Kd6 27.Bg7 Ng7 28.Nf7 Kc6 29.Nh8 Kb6 30.Re7 (30.Re7 Nh5 31.Rh7+-) 1–0. hal1958 – Chesser, playchess.de, 2002.

6.h3 a6 7.Nc3 ab5 (7...Be6 8.g4 Nfe7 9.Nf3 ab5 10.cb5) 8.cb5 Nf6 9.g4 Ne7 10.Bg2.

6.Nh3 c5 7.g3 b6 8.Bg2+/- Rb8 9.0-0 Nf6 10.Qa4 Ng4 11.Qa7 Be6?? 12.Ng5 Be7 13.Ne6 fe6 14.Bc6 Kf8 15.Bd7 Ra8 16.Qb7+- h5? 17.Be6 Qb8 18.Qb8 Rb8 19.Bf5 h4 20.Bg4 hg3 21.fg3 Ke8 22.Nc3 Kd8 23.Nd5 Ra8 24.Nb6 Ra7 25.Rf7 Ke8 26.Rg7 Rb7 27.Nd5 Bf8 28.Rb7 (28.Rb7 Rh7 29.Rh7 Bg7 30.Bh5 Kf8 31.Rf1 Kg8 32.Bg6 Bf6 33.Nf6 Kf8 34.Rf7#) 1–0. tschulz – Hobbykegler, mySchach.de, 2004.

5.Qc2 a6 6.a4 Ng6 7.e3 Be7 8.Nf3 Nf6 (8...Bg4 9.Be2=) 9.h4 (9.Be2 e4 10.Ng5 Bf5+=) 9...h6 (9...Bg4 10.d4=+) 10.Nc3 Be6 (10...0-0 11.h5 Nh8 12.d4=) 11.h5= Nf8 12.d4 ed4 (12...N8d7 13.Ne4=) 13.ed4 (13.Nd4 ab5 14.ab5 Ra1 15.Ba1 Qa8+=) 13...d5 (13...Bg4 14.Ne4=+) 14.c5 b6 (14...ab5 15.Bb5 c6 16.Be2=+) 15.c6 (15.cb6 cb6 16.Ne5 Bd6+=) 15...a5 (better 15...ab5!? 16.ab5 Ra1 17.Ba1 Bg4=+) 16.Bd3 Bd6 17.0-0-0 Qe7 18.Rde1 Ba3 (18...0-0-0 19.Kb1+=) 19.Re2 (19.Ba3 Qa3 20.Qb2 Qb2 21.Kb2 0-0-0+/-) 19...0-0-0 20.Ne5 Bb2 21.Qb2 N8h7 22.f3 (22.f4!? Ne4 23.Ne4 de4 24.Be4+/-) 22...Ng5+= 23.g4 Ne8 (23...Rhe8 24.f4 Nge4 25.f5 (worse 25.Ne4 de4 26.Bc2 Bg4 27.Ng4 Ng4-/+) 25...Bf5 26.gf5+/-) 24.Rf1 (24.f4 Ne4 25.Rhe1 g6 26.hg6 f6+-) 24...Nd6+/- 25.Qa3 (25.f4 Nge4 26.Rfe1 Kb8+-) 25...Rhe8+= 26.Kb2 Nc4 (26...Qf6 27.f4+=) 27.Bc4 (better 27.Nc4 dc4 28.Qe7 Re7 29.Bc2 Rd4 30.f4+-) 27...dc4? (better 27...Qa3 28.Ka3 dc4+/-) 28.Qe7+- Re7 29.f4 Nh7 30.f5 (better 30.Nf3!? Nf6 31.f5 Ng4 32.fe6 fe6+-) 30...Bd5 31.Rfe1 f6? (31...Nf6 32.Kc2+/-) 32.Ng6 (better 32.Nd5!? Rd5 33.Nd7 Re2 34.Re2+-) 32...Re2 33.Re2 (worse 33.Ne2 Re8 34.Ngf4 Bf3=) 33...Bf3 34.Re7 Bg4? (better 34...Ng5!?+-) 35.Rg7 (better 35.Nd5! Kb8 36.Nc7 Bf3+-) 35...Ng5 36.Ne7 Kb8 37.d5 (37.Ned5 Bf3 38.Nc7 (38.Nf6?! Kc8+-) 38...Rd4 39.Na6 Kc8 40.Rb7+-) 37...Bh5+/- 38.Ne4?? (38.d6 Bf7 39.d7 Ka7+-) 38...Bf3 (better 38...Ne4 39.Kc2 Bf3-+) 39.Nf6+- Ne4 40.Ng6?? (better 40.Nd7 Ka7 41.f6+-) 40...Nf6-+ 41.Rf7 (41.Ne5 Bd1 42.Nc4 Nd5-+ (42...Ba4 43.d6 Ne8 44.Rd7=+; 42...Rd5?! 43.Ne3-+)) 41...Nd5 42.Ne5 (42.f6 c3 43.Kc1 Be4-+) 42...Be4 (42...c3 43.Ka3 Be4 44.Nd7 Ka8 45.Rg7 Bf5 46.Kb3-+) 43.Nd7 White prepares f6 (43.Nc4 Nf4 44.f6 Nd3 45.Ka3-+) 43...Ka8 44.f6 (44.Rg7 c3 45.Kb3-+) 44...Nb4 (better 44...c3 45.Kb3 c2-+) 45.Kc3? (better 45.Rg7 Bd5 46.f7 Bf7 47.Rf7-+) 45…Bd5 (45...Bd5 46.Rg7 Na2 47.Kc2 h5-+) 0-1. bjoernsen (2280) - rumen_borisow (2115), Rated Blitz game, lichess.org, 2016.

5.Qc2 Be6 6.e3 Qd7 (6...Nf6 7.Nf3=) 7.Nf3 f5 (7...Nf6 8.Nc3=) 8.Ng5 0-0-0 9.Qa4 Kb8 10.Nc3 h6? (10...Nh6 11.Ne6 Qe6 12.Be2=) 11.Ne6 (better 11.b6!? Nc6 12.ba7 Ka8 13.Ne6 Qe6 14.Rb1+/-) 11...Qe6= 12.Be2 g5 13.h4 (13.d4 Bg7=) 13...gh4 14.Rh4 Nf6 Black intends e4 15.0-0-0 (15.b6 cb6 (worse 15...ab6 16.Nb5+/-) 16.d4 Rg8=) 15...Ng6 16.Rhh1 Ng4 17.Rhf1 Bg7 18.Bf3 (18.d4 ed4 19.Nd5 Rhe8=) 18...e4=+ 19.Be2 N6e5 (19...f4 20.c5 d5 21.b6 cb6 22.cb6=+) 20.f3 Nf6 21.Rfe1 (21.fe4 Ne4 22.Ne4 fe4=+) 21...Nd3 (21...Rhg8 22.Rh1=+) 22.Bd3 ed3 23.Qb3 (better 23.b6 cb6 24.Nb5=) 23...d5?? (23...Rhg8!?=+) 24.c5 (24.Nd5 Rhg8 25.Nb4+/- (worse 25.Qd3 Nd5 26.cd5 Bb2 27.Kb2 Rd5=+)) 24...Rhg8= 25.Na4 (25.c6 Bf8 26.Rg1 Nh5=) 25...Nd7=+ 26.Bg7 Rg7 27.Rg1 Qe7 (27...Rdg8=+) 28.Qd5? (better 28.c6!? Nc5 29.Nc5 Qc5 30.Kb2=) 28...Nb6-/+ 29.Qb3 Na4 30.Qa4 Qc5 31.Kb1 (31.Kb2 Rd5-/+) 31...Rd5 32.Ka1 Qb6 (32...Qb5!? 33.Qa3 Rd8-/+) 33.Rb1 Qf6 34.Rb2 Rg6 35.Qc4 Qd6 36.e4 (36.Rb3 Rg3=+) 36...fe4-/+ 37.Qe4 Re5 38.Qc4 Rg8?? (better 38...Re2-/+) 39.Qg8 Qf8 (39...Re8 40.Qe8 Qd8 41.Qd8) 40.Qf8 Re8 41.Qe8 1-0. bjoernsen (2315) - serpy73 (2115), Rated Blitz game, lichess.org, 2016.

5.Qc2 Nf6 6.e3 Bf5 7.d3 Bg6 8.Nf3 h5 (8...a6 9.Be2=) 9.Nc3 h4 10.h3 Qd7 11.c5 (11.Be2 Qe6+=) 11...Ned5 (11...Rh5 12.Ne4=) 12.cd6 (12.Nd5 Nd5 13.Qc4 c6+=) 12...Bd6 (12...Nb4 13.Qb1 Qd6 14.e4+/-) 13.e4 (13.Nd5!? Nd5 14.Ne5 Be5 15.Be5+=) 13...Nf4 14.Rd1 0-0-0 15.Qa4 Kb8 16.Nd2 (16.Ne2 Qe7 17.Nf4 Bb4 18.Nd2 ef4 19.a3 Ne4 20.Qb4 (20.ab4?? Nc3 21.Ne4 Na4 22.Bg7 Be4-+) 20...Nd6 21.Ne4=) 16...Bc5-/+ 17.Nc4 Rhe8 (17...Bd4 18.Ne2 Bb2 19.Nb2-/+) 18.Qc2? (18.g3 N4h5 19.Ne2 Be4 20.de4 Qd1 21.Qd1 Ne4 22.Nd4 ed4 23.Be2 hg3 24.0-0 Nf2 25.Rf2 gf2 26.Kh2-+) 18...Bh5-/+ 19.Rd2 Nh7 (better 19...Bd4-/+) 20.g3?? (better 20.Ne3-/+) 20...hg3 (20...Ng5 21.g4 Nf3 22.Kd1-+) 21.fg3 Ne6?? (better 21...Ng5!? 22.Bg2 Ng2 23.Rg2 Qd3 24.Qd3 Rd3-+) 22.Na4? (22.Ne5 Qd6 23.Ne2 Bb4-/+) 22...Bd4 (22...Nd4 23.Bd4 Bd4 24.Nc3-+) 23.Nc3 (better 23.g4!? Bb2 24.Qb2=) 23...f6 24.Be2 Be2 25.Ke2 Nhg5 26.h4 (26.Rdd1 Nc5-+) 26...Rh8 (26...Nc5 27.Kf1 Qg4 28.Qd1 Qg3 29.Nd5-+) 27.Rdd1 (27.Rf1 Nh3 28.Ke1 Bc3 29.Bc3 Qb5-/+) 27...Nc5 (better 27...Bc3 28.Bc3 Nd4 29.Bd4 Qg4 30.Kf2 Qf3 31.Kg1 Qg3 (31...ed4?! 32.Kh2-/+) 32.Qg2 Nf3 33.Kf1 Qg2 34.Kg2 Nd4-+) 28.Kd2? (better 28.Ne3 Be3 29.Ke3-/+) 28...Bc3-+ 29.Kc3 Qd4 30.Kb4 Nd3 31.Rd3 Qd3 32.Qd3 Rd3 33.Re1 Ne6 34.Ne3 Rhd8 35.Nd5 (35.h5 Nd4 36.Kc5 Nf3-+) 35...Rd7 (better 35...Rg3!? 36.Bc3-+) 36.Re2 (36.Rf1 Rg3 37.Nf6 gf6 38.Rf6 Nd8 39.Be5 Rg4-+) 36…c6 (36...c6 37.Re3 Rd2 (37...cd5?! 38.Rd3 d4 39.Ba3-+) 38.bc6 Rb2 39.Kc3 bc6 40.Kb2 cd5 41.ed5 Rd5-+) 0-1. bjoernsen (2245) - ToLazyToGetAName (2375), Rated Blitz game, lichess.org, 2016.

5.Nc3 b6 6.e4 Bb7 7.Nf3 Nf6 8.d3 Qd7 9.Be2 h6 10.a4 Ng6 11.Nd5 Bd5 12.cd5 Nf4 13.Bf1 Be7 14.Nh4 Nh7 15.Nf5+/- Bf6 16.g3 Ng6 17.Bh3 Qd8 18.0-0 Ne7 19.Rc1 Nf5 20.Bf5 Qe7 0–1. algernon (2265) – zekota (2155), net–chess.com, 2010.

5.Nc3 Be6 6.d3 Nf6 7.e4 Ng6 8.g3 Be7=+ 9.h3 a5 10.Nf3= h6 11.Bg2 Qd7 12.Na4 b6 13.Qc2= 0-0-0 14.Rd1 Qe8 15.d4+= ed4 16.Bd4 Bf8 17.0-0 Nd7 18.Nd2 f6 19.f4 Bf7 20.e5 fe5+= 21.fe5 Nge5 22.Qe4 Nb8?? 23.Nb6! cb6 24.Qb7 1–0. De Visser,Arno – Klein,H, Noordkop, 1998.

5.Nc3 Be6 6.e3 Nf6 7.Nf3 h6 (7...Ng6 8.d4=) 8.d4+= e4 9.Nd2 Bf5 10.Qc2 Pawn e4, live or die! 10...d5 11.Be2 Qd6 12.a4 Ng6 (12...Qe6!?+=) 13.Ba3 Qd7 14.Bf8 Rf8 15.cd5 Nd5 16.Nce4 0-0-0 17.Bd3 (better 17.0-0+-) 17...Kb8?? (17...Nb4 18.Qb3 Nd3 19.Qd3+/-) 18.Rc1 (better 18.Nc5 Qe7 19.Bf5 Ne3 20.fe3 Qe3 21.Kf1 Qd4 22.Ndb3 Qf4 23.Qf2+-) 18...Nb4 19.Qb1 Nd3 20.Qd3 Rfe8 (20...Nh4 21.g3 Ng2 22.Kf1+/-) 21.0-0 Nh4 22.f3 Qe6 23.Qc3 Rc8 24.Rfe1 Qg6 25.g3?? (25.Ng3 Be6+-) 25...Be4?? (better 25...Nf3 26.Nf3 Be4=) 26.fe4+- Qg4 (26...Qg5+-) 27.Rf1 Ng6 28.Kg2 (28.Rf7 Re7 29.Re7 Ne7+-) 28...h5 (better 28...f6+-) 29.Rf3?? (better 29.Rf7 Re7 30.Re7 Qe2 31.Kg1 Ne7 32.Nc4+-) 29...Nh4-+ 30.Kf2 Nf3 31.Nf3 Re4 (31...Qe4 32.a5-+) 32.Ne5 (32.a5 c6 33.Qd3 Rce8 34.bc6 Re3 35.c7 Kc8 36.Qe3 Re3 37.Ke3 Qe6 38.Kd3 Qg6 39.Ke2 Qa6 40.Kf2 Qa5-+) 32...Qf5 33.Kg2 h4 34.Nc6?? (34.Qc2 hg3 35.hg3 Re5 36.de5 Qe5 37.e4-+) 34...Ka8 (better 34...bc6 35.Rf1 Qe6 36.Qc6 h3 37.Kg1 Re3 38.Qe6 fe6-+) 35.Ne5 h3 (35...hg3!? 36.Rf1 Qg5 37.Nf7-+) 36.Kg1-/+ f6 37.Nc6?? (better 37.Nc4-/+) 37...Qf3-+ 38.Rc2 (38.Qd2 bc6 39.Re1-+) 38...Re3 39.Qc5 Re1 0-1. dannysmet (2040) - Inder_alamsyah (2020), Rated Blitz game, lichess.org, 2020.

5.Nc3 Be6 6.e4 f5 7.d4 fe4 (7...Nf6 8.d5 Bd7 9.Bd3=) 8.de5 (8.Ne4 ed4 9.Nf3 Bg4+=) 8...Ng6 (8...e3 9.fe3 de5 10.Qh5 Ng6 11.Rd1+=) 9.Ne4 de5 10.Qb3 (10.Qf3 Qh4=) 10...Nf6 (10...Qh4 11.Bd3=) 11.Ng5 Bg8 (11...Qe7 12.Ba3 Qa3 13.Qa3 (< 13.Ne6 Qa5 14.Ke2 Qb6=+) 13...Ba3 14.Ne6 Bb4 15.Ke2=+) 12.Bd3 (12.Rd1 Bd6+=) 12...e4 ( 12...Nf4 13.0-0-0 Nd3 14.Rd3 Nd7=) 13.0-0-0?? ( 13.Ne4 Qe7 14.Kf1 Ne4 15.Be4+=) 13...ed3-+ 14.Rd3 Nd7 (14...Qc8 15.Re3 Be7 16.N1f3-+) 15.N1h3 (15.N1f3 Qc8 16.Re3 Ne7 17.Rhe1=) 15...Bd6?? ( 15...Qc8!?-+) 16.Re1 Kf8–/+ 17.Qc3 Nde5 18.Rf3 Ke8 19.c5 Be7 20.Rfe3? Bg5-+ 21.f4 Bf4?? 22.Nf4+- Nf4 23.Qe5 Ne6 24.Qg7 Qe7 25.Re6! Be6 26.Qh8 Kf7 27.Qh7 Kf8 28.Qh8 Kf7 29.Rf1 Kg6 30.Rf6 (30…Qf6 31.Qf6 (31.Bf6?! Rh8 32.Bh8 Ba2+/-; 31.Qa8 Qf1 32.Kd2 Qg2 33.Kc3 Qf3 34.Kb4 Qe4 35.Kc3 Qe3 36.Kc2 Bf5 37.Kd1 Qd3 38.Ke1 Qb1 39.Ke2 Qb2 40.Kf3 Qc3 41.Kf4 Qd4 42.Kf3 Qd5 43.Kg3 Qe5 44.Kf3 Be4 45.Ke2 Bc6 46.Kd1 Qa1 47.Kc2 Qa2 48.Kc3 Qa3 49.Kc2 Qc5 50.Kd2 Qd6 51.Kc1 Qf4 52.Kd1 Bf3 53.Kc2 Qh2 54.Kb3 Bd5 55.Kc3 Qe5 56.Kd2 Qd4 57.Kc2 Be4 58.Kb3 Qe3 59.Kb2 Qd2 60.Ka3 Qc1 61.Kb4 a5 62.ba6 Qb2 63.Kc4 b5 64.Kc5 Qc3 65.Kb5 Ba8 66.a7 Bc6 67.Ka6 Qa1) 31...Kh5 32.Qe5 Kg4 33.Qe6 Kg5 34.Qd5 Kh6 35.g4 Kh7 36.Qd7 Kg6 37.Qg7) 1–0. Quabach,Juergen – Smiatek,Hans Dieter, Koeln KSV–ch, 1997.

5.d3 Nf6 6.h3 g6 7.e4 Bg7 8.Nf3 0-0 9.Be2 b6 10.a4 a6 11.Nbd2 Bb7 12.0-0 Qd7 13.Nb1 ab5 14.ab5 Ra1 15.Ba1 Ra8 16.Nc3 Nh5 17.Nh2 Nf4 18.Bg4 f5 19.ef5 Nf5 20.Bf3 Bf3 21.Qf3 Ra3–/+ 22.Rd1 Nd4 23.Qg4 Qg4 24.Ng4 Nd3 25.Rd3 Ra1 26.Kh2 Rc1 27.Ne3–/+ e4 28.Na2?? ed3 29.Nc1-+ d2 30.Nd3 Nb3 31.f4 Bd4 32.Nd1 Na5 33.N3b2 Bb2 34.Nb2 Nc4!! 35.Nd1 Kf7 36.Kg3 Na3 37.Kf2 Nb5 38.Ke2 Ke6 39.Kd2 c5 40.Ne3 d5 41.g4 Nd4 42.Kd3 Nf3 43.Nd1 c4 44.Ke3 Ne1 45.Nc3 Nc2 46.Kd2 Nb4 47.Nb5 Nc6 48.Kc3 h6 49.h4 Nd8 50.Kd4 Nc6?? 51.Kc3 h5 52.gh5 gh5 53.Nc7 Kd6 54.Ne8 Ke6 55.Ng7?? Kf6-+ 56.Nh5 Kf5 57.Ng7 Kf4 58.h5 Kg5 59.Ne6 Kh5?? 60.Nf4= Kg5 61.Nd5 b5 62.Nb6 Ne5–/+ 63.Nd5 Nc6 64.Nc7 Na7 65.Nb5 ½–½. hal1958 – Sandra, playchess.de, 2003.

5.d4 ed4 6.Bd4 Nf6 7.Nf3 Bd7 8.e3 Ne4 9.Nc3 Nc3 10.Bc3 f6 11.Bd3 d5 12.a4 dc4 13.Bc4 c5 14.Qb3 Qc7 15.Bf7 Kd8 16.Rd1 Kc8? (better is 16...Nc8+/-) 17.Be6+- Be6 (17...c4 18.Bd7 Qd7 19.Qc4 Qc7 20.Qe6 Kb8+-) 18.Qe6 Kb8 19.Ne5! a5 (19...fe5 20.Be5 Decoy) 20.b6 Qd7 21.Rd7 (21.Rd7 fe5 22.Be5 Kc8 23.Rd5; 21.Nd7 Kc8 22.Nf6 Kb8 23.Be5) 1–0. Fournier,Frederic – COMP Arasan 1.3, Active Game France (FRA), 1995.

5.d4 ed4 6.Nf3 c5 7.bc6 bc6 8.Bd4 Nf5 9.Bc3 Nf6 10.Qa4 Bd7 11.Nbd2 Be7 12.e4+/- Nh6 13.Bd3 c5 14.Qc2 0-0 15.0-0 Nhg4 16.h3+- Ne5 17.Ne5 de5 18.Be5 Bc6 19.Bc3 Re8? 20.e5 (20.e5 Nh5 21.Bh7 Kh8 22.Be4+-) 1–0. pierre – bojko, internet, 2011.

5.d4 ed4 6.Nf3 Nf6 7.Nd4 Ng6 (7...a6 8.e3 d5 9.ba6 ba6 10.Nd2 Rb8 11.Rb1+=). woschkat(+) (2470) – deaf (2445), net–chess.com, 2003.

5.d4 Be6 6.d5 Bf5 7.Nc3 Nf6 8.e3 Ng6 9.Bd3 Qd7 10.h3 Be7 11.Nge2 e4 12.Bc2 Ne5 13.Ng3 Nc4 14.Nf5 Qf5 15.Qb1 0-0 16.Be4? Qd7?? 17.a4 Ne4=+ 18.Ne4 Nb2 19.Qb2= Qf5 20.f3 Qd5–/+ 21.0-0 Qe6 22.Rfc1 Rac8 23.a5 d5-+ 24.Nc5 Qe3 25.Kh2?? Bc5 26.Re1 Bd6 27.Kh1 Qf4 28.Kg1 Qh2 29.Kf2 Bg3 (29...Bg3 30.Ke3 Rfe8 31.Kd3 Be1-+) 0–1. gtate (1955) – nottoo (2060), net–chess.com, 2004.

5.d4 Ng6 6.Nc3 N8e7 7.Nf3 Bg4 8.e3 ed4 9.Qd4 Bf3 10.gf3 Nf5? 11.Qe4+- Nfe7 12.Qb7 Ne5 13.Qe4 c6 14.bc6 N5c6 15.Bh3 Qb6 16.Rb1 Qa5 0–1. xadrezpg (2315) – bishopbriggs (2325), net–chess.com, 2010.

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Nc6 4.b5 Nce7 5.c4).

5.e4 c5 6.Nf3 Nf6 7.d3 b6 8.Be2 h6 (8...Ng6 9.0-0=) 9.0-0 g5 (9...a6 10.Nc3+=) 10.Nc3+= Bb7 11.Nd5 Ned5 12.cd5 Bg7 13.a4 0-0 14.Bc3 a6 15.Nd2 ab5 16.ab5 Ra1 17.Qa1 Qa8? (17...Qc7 18.Nc4+=) 18.Qa8 (18.Nc4!? Qd8+-) 18...Ra8+/- (18...Ba8? 19.Nc4+-) 19.Ra1 (19.Nc4!? Bf8 20.Bd1+/-) 19...Ra1+= 20.Ba1 Bc8 (20...Nd7!?+=) 21.Nc4+/- Bg4? (better 21...Bd7 22.Nd6 Ne8+/-) 22.Bg4+- Ng4 23.Nd6 Kf8? (23...Nf6+-) 24.Nc8 f6 (24...f5 25.ef5 e4 26.Bg7 Kg7+-) 25.h3 1-0. rcm06 (2135) – bigblueb, gameknot.com, 2021.

5.Nf3 a6 6.Nc3 ab5 7.cb5 Bd7 8.e4+= Nf6 9.Bc4 c5 10.Qb3+/- Be6 11.Be6 fe6 12.Qe6 Qd7 13.Qc4 Qg4 14.Kf1 Ne4? 15.Ne4+- d5 16.Nd6 Kd7 17.Qg4 Kd6 18.Be5# 1–0. marre – yhct, internet, 2010.

5.Nf3 Bf5 6.e3 Bb1 7.Qb1 e4? 8.Qe4+- Nf6? 9.Qb7 Rb8 10.Qa7 Nf5 11.Bd3 Ne7 12.0-0 Rb6 13.Bd4 Nc8 14.Qa8 c5 15.bc6 Na7 16.Qd8 Kd8 17.Bb6 Kc8 18.Ba7 (18.Ba7 Kc7 19.Nd4+-) 1–0. marre – dccv, internet, 2010.

5.Nf3 Nf5 6.d3 Nh4 7.Nh4 Qh4 8.e3 Nf6 9.g3 Qg4 10.Qg4 Bg4 11.Bg2 a6? 12.Bb7+- Rb8? 13.ba6 Be7 14.Bc6 Bd7 15.a7 Rb2 16.a8Q Bd8 17.Qa4 Rb6 18.Bd7 Nd7 19.0-0 0-0 20.Qd7 Rb2 21.c5! Bf6 22.Qc7 d5 23.Nc3 e4 24.d4 Bd8 25.Qe5 Ba5 26.Nd5 Rbb8 27.Qe4 Rfe8 28.Rfb1 h6 29.Rb8 Rb8 30.Ne7 Kh8 31.Nc6 Ra8 32.Na5 Ra5 1–0. Bonetti,Shane – Soul_Mate, ICC, 2002.

5.Nf3 Nf6 6.e3 Bg4 7.Be2 Qd7 8.Nc3 Ng6 9.h3 Be6 10.Ng5 h6 11.Ne6 Qe6 12.Qa4 Be7 13.Nd5! 0-0? 14.Nc7+- Qf5 15.Na8 Ne4 16.0-0-0 Nf2 17.Nc7 Nh1 18.Rh1 Qe4 19.Bf3 Qd3 20.Bb7 Bd8 21.Nd5 Nh4 22.Nc3 Ng2 23.Be4 Qd2 24.Kd2 Ne3 25.Ke3 Bb6 26.Kd2 Rc8 27.Nd5 Bf2 28.Ne7 (28.Ne7 Kf8 29.Nc8 Bc5 30.b6 g5 31.b7 g4 32.b8Q Be3 33.Ke3 g3 34.Nd6 Kg7 35.Be5 f6 36.Qaa7#) 1–0. pierre – topozau, internet, 2010.

5.Nf3 Nf6 6.e3 Bg4 7.Be2 Ng6 8.0-0 Be7 9.d4 e4 10.Nfd2 Bf5 11.g4 Bd7 12.Nc3 Qc8 13.g5 Ng8 14.Nde4 f5 15.gf6! Nf6 16.Nf6 Bf6 17.Nd5 0-0 18.Nf6 Rf6 19.c5 Bh3= 20.Qb3 Kh8 21.Rfc1 Nh4 22.f4 Rg6 23.Kf2 Rg2 24.Ke1 Qf5 25.cd6 cd6 26.Rc3? Re8 27.b6 ab6 28.Qb6?? Qf4 29.ef4= Rge2 30.Kd1+- Bf5 31.Qb5 Re1 32.Kd2 R1e4 33.Rg3 1–0. Machete99 (2240) – Shangu (1655), ICC, 2002.

5.Nf3 Ng6 6.d4 Be6 7.Nbd2 Be7 8.de5+= d5 9.cd5+/- Qd5 10.e4 Qd7 11.Rc1 Bg4 12.e6+- Qe6 13.Bg7 Nf6 14.Bc4 Qb6 15.Bh8 Nh8 16.Qc2 0-0-0 17.0-0 Bc5 18.e5 Nd5 19.h3 Be6 20.Bd5 Bd5 21.Qc5 Qc5 22.Rc5 Be6 23.Ne4 Rg8 24.Rfc1 Bh3 25.Nfg5 Bf5 26.Rc7 Kb8 27.Nd6 Bg4 28.e6! (28.e6 Be6 29.Ne6 Rg2 30.Kg2 a6 31.Rb7 Ka8 32.Rc8#) 1–0. MrkT – jansax, internet, 2005.

5.g3 Bg4 6.Bg2= c6 7.Nc3 cb5 8.cb5 Qb6 9.a4 a5 10.Nf3 Nf6 11.d3 Ned5 12.0-0 Nc3 13.Bc3 Be7 14.Rc1 0-0= 15.Qd2 Rfe8 16.Rc2 Nd5 17.Bb2 Nb4 18.Rcc1 h6 19.e3 Bf5 20.Ne1 Bg5 21.Nc2?? Nd3–/+ 22.Rb1 Nb2 23.Rb2 Rac8 24.Na3 Rc7 25.Rc1 Rec8 26.Rc7–/+ Rc7 27.Bd5 Be6 28.Be6 fe6 29.Rc2 Rc2 30.Qc2 Qc5 31.Qc5=+ dc5 32.Nc4 e4 33.Na5 b6 34.Nc4 Bd8 35.Nd2 Kf7 36.Ne4 Bc7 37.Nd2 g5 38.Kg2 Kf6 39.Kf3 Ke5 40.Ke2 g4 41.Kd3 h5 42.Kc4 Bd6 43.Kd3 Kf5 44.Nc4 Bc7 45.a5! ba5 46.b6 Bb8 47.Na5 e5 48.Nc6 Bd6 49.b7 e4 50.Kc4 Ke6 51.b8Q Bb8 52.Nb8 1–0. algernon (2110) – pwillows (2000), net–chess.com, 2005.

5.g3 g6 6.Bg2 Bg7 7.f4 f5 8.Nf3+= Nf6 9.fe5 Ng4 10.h3 Ne5= 11.Ne5 Be5 12.Be5 de5 13.d3 f4=+ 14.gf4 Nf5–/+ 15.Qd2 Qh4 16.Kd1 ef4 17.Kc1 Ne3 18.Bf3 a6 19.Nc3 ab5 20.Nb5 Qe7 21.Qc3 0-0 22.Kb2 c6 23.Nd4 Rd8 24.Nc2 Nc2 25.Kc2 Bf5 26.Rh2 Ra3-+ 27.Qb2 b5! 28.Bc6 bc4 0–1. algernon (2385) – kallahad (2300), net–chess.com, 2003.

5.g3 Ng6 6.Bg2 Nh6 7.a4 Be7 8.a5 0-0 9.a6 Rb8 10.ab7 Bb7 11.Nf3 Ra8 12.0-0 f5 13.d4 (better 13.Nc3!?+/-) 13...e4+= 14.Ne1 c6 15.bc6 Bc6 16.d5 Bd7 17.Nc2 Bf6 18.Bf6 Qf6 19.Qd4 Ne5 20.Nd2 a5 21.f4 Neg4 22.Qf6 Rf6?? (better 22...Nf6 23.Nd4 a4=) 23.h3+- e3 24.hg4 ed2 25.g5 Rg6 26.gh6 Rg3 27.e3 gh6 28.Kf2 Rg6 29.Rfd1 Kf7 30.Rd2 Kf6 31.Nd4 Rag8 32.Bf3 Rg3 (32...a4+-) 33.Ra5 Rh3 34.Ne2 (better 34.Kf1 Rgg3 35.Rf2 Kg6+-) 34...Rh2 35.Ke1 Rb8 36.Nc3 Rb3 (36...Rh3 37.Ra7 Ba4 38.Na4 Rf3+-) 37.Rh2 (37.Rh2 Be8 38.Rh6 Bg6 39.Nb5+-) 1-0. enver_lovac964 (2395) - pablok64 (2260), Rated Blitz game, lichess.org, 2016.

6.Nc3 Ng6 7.Nf3 Be7 8.Be2 0-0 9.0-0 Nf4 10.d4 Ne2 11.Qe2 ed4 12.Nd4 Re8 13.Rfe1 Bd7 14.Rad1 c5 15.Nc2 Be6 16.Ne3 Nd7 17.f4 f6 18.a4 Qa5 19.Ncd5 Bf8 20.Bc3 Qd8 21.a5 b6 22.a6 Bf7 23.Qf3 Bg6 24.f5 Bf7+/- 25.Ng4 Bd5 26.ed5 Re1 27.Re1 Ne5 28.Be5 de5 29.Qg3 Kh8 30.Nf2 Qd7 31.Qf3 Bd6 32.Ne4 Re8 33.Qh5 Rg8 34.Qf3 Qe7 35.Kf2 g6 36.g4 g5 37.Rh1 Kg7 38.h4 h6 39.hg5 hg5 40.Qh3 Kf8 41.Qh6 Kf7 42.Qh5 Kf8 43.Qh6 Kf7 44.Qh7 Rg7 45.Qh8 Qf8 46.Rh7 Qh8 47.Rh8 Bf8 48.Nf6! Kf6 49.Rf8 Rf7 50.Rf7 Kf7 51.Ke3 Ke7 52.Ke4 Kf6 53.d6 (53.d6 Kf7 54.Ke5 Ke8 55.Ke6 Kf8 56.d7 Kg8 57.d8Q Kg7 58.f6 Kh6 59.Qf8 Kg6 60.Qg7#) 1–0. Van Broeck,Walter – Hooyberghs,Benny, Zilveren Toren op, 2000.

6.Bd3 c5 7.Ne2 b6 8.0-0 a6 9.a4 g6 10.Nbc3 Bg7 11.Nd5 Nfd5 12.ed5 0-0 13.f4 Nf5 14.g4 Nd4 15.fe5 Bg4 16.Bd4 Qg5 17.Be3 Qh5 18.Rf2 Be5 19.Bf4 Ba1 20.Qa1 ab5 21.cb5 Rfe8 22.Ng3 Qh4 23.Bd6 Rad8 24.Be5 Rd5 25.Bc4 Rde5 26.Rf7 Kh8 27.Rf8 Rf8 28.Qe5 Qf6 29.Qf6 Rf6 30.Ne4 Rf4 31.d3 Bh3 32.Nc3 h5?? 33.d4 cd4 34.Nd5 Rg4 35.Kf2 Rg2 36.Kf3 Rc2 37.Nb6 Rc3 38.Ke4 d3 39.Ke3 Bf5 40.a5 Ra3 41.a6 g5 42.Bb3 h4 43.Ba4 Bd7 44.a7 d2 45.Kd2 Ra2 46.Kc3 Ra4 47.Na4 1–0. Trkn – **Borge**, itsyourturn.com, 2000.

4.Qa4 c6 5.cd5 Qd5 6.Nf3 f6 7.Nc3 Qd7 8.e3 b5 9.Nb5 Ba6 10.Nc3+/- Bf1 11.Kf1 Nh6 12.d4 ed4 13.Nd4+- Nf5 14.Rd1 Qc8 15.Qb3 Nd4 16.ed4 Nd7 17.Qe6 Be7 18.Re1 Qd8 19.b5 cb5 20.Ba3 Nf8 21.Qc6 Nd7 22.Be7 Qc8 23.Bf6 Kf7 24.Qe6 Kg6 25.Qg4 Kf6 26.Nd5 Kf7 27.Re7 Kg8 28.Qg7# 1–0. pcmvr (1845) – velislavgp, internet, 2005.

4.b5 dc4= 5.e3 Be6 6.Be5 Bd6?? 7.Bg7+- Be5 8.Be5 f6 9.Bb2 Qd5 10.a4 Nd7 11.Nc3 Qe5 12.Nf3 Qf5 13.Nd4 Qe5 14.Ne6 Qe6 15.Qh5 Kd8 16.Qd5 Qd5 17.Nd5 c6 18.bc6 bc6 19.Nb4 Ne7 20.Bc4 a5 21.Nd3 Nf5 22.g3 Nd6 23.Be6 Rf8 24.Bd7 Kd7 25.Ba3 Rab8 26.Bd6 Kd6 27.Ke2 c5 28.Rhc1 Rfc8 29.Rab1 Rb1 30.Rb1 c4 31.Ne1 c3 32.dc3 Rc3 33.Rb5 Ra3 34.Ra5 Kc6 35.Ra6 Kc5 36.Rf6 Ra4 37.Rf5 Kb6 38.Rf6 Kb5?? 39.Rh6+- Ra7 40.Nf3 Rg7 +-. Cornacchini – DrNickRiviera, playchess.de, 2002.

4.cd5 Qd5 5.Nc3 Qd8 6.Nf3 Bb4 7.Ne5 Nf6?? 8.Qa4+- (8.Qa4 Nbd7 9.Nd7 (9.Qb4?! Ne5 10.Nb5 Nc6+/-) 9...Qd7 10.Qb4+-) 1–0. pcmvr (2775) – vpccosta (2175), net–chess.com, 2008.

5.b5 a6 6.Be5 dc4 7.Nc3 c6 8.b6 Be6 9.Bc7 Qd7 10.Nf3 Bd6 11.Ng5 Bc7 12.bc7 Qc7+= 13.Ne6 fe6 14.Qc4 Qe7 15.g3 Nf6 16.Bh3+/- Nd5 17.Rb1 b5 18.Qg4 Nc3+= 19.dc3 e5?? 20.Qc8+- Qd8 21.Qb7 Nd7 22.Bd7 Kf8 23.Be6 c5 24.Qf7# 1–0. pierre – gustawco, internet, 2009.

5.b5 a6 6.Be5 dc4 7.Nc3 Qe7 8.Nf3+- Qd8 9.e4 Bd6 10.Bg7 Bg4 11.e5 Qe7 12.Nd5 Qe6 13.Bc4 (13.Bc4 Kd8 14.Ne3+-) 1–0. pierre – zytura, internet, 2009.

5.b5 a6 6.Be5 f6 7.Bf4 g5 8.Bg3 a5? (better 8...h5 9.h4 Ne7 10.hg5 fg5+-) 9.cd5+- Ne7 (9...f5 10.Be5 Nf6 11.Nc3+-) 10.Qc4 b6? (10...c6 11.dc6 bc6+-) 11.Bc7 Qc8 12.Nc3 Ra7 (12...Qb7 13.Ne4 Ng8 14.Ng5+-) 13.d6 Nf5 14.Nd5 Bg7 (14...Be6 15.Nb6 Bc4 16.Nc8 Rb7+-) 15.Nb6 Qb7 (15...Rc7 16.dc7 (16.Nc8 Rc4 17.Nb6 Rb4=+; worse 16.Qc7 Qd8+-) 16...Qb7 17.Qe4 Qe4 18.cb8Q (worse 18.cb8N Qd4 19.Rb1 Qb6 20.Nd7 Kd7–/+; 18.cb8B? Qd4 19.Rb1 Qb6-+) 18...Ke7 19.Qa7+-) 16.Nd7 Nd7 17.Qe6 Kf8 18.Qd7 Kg8 (18...Qe4 19.b6 Ra8 20.Rc1+-) 19.Qe6 Kf8 20.e3 Ra8 21.Bc4 Nh6 (21...Qd5 22.Bd5 Ne3 23.Qf7) 22.Qe7 1–0. Panza (2515) – st george manchester, ChessWorld.net, 2007.

5.e3 Nc6 6.Qa4?? Bb4?? 7.Bg7+- c3 8.Bc3 Bc3 9.Nc3 Qf6 10.Nf3 Bd7 11.Bb5 Nge7 12.0-0 a6 13.Nd5?? Nd5-+ 14.e4 Ne5 15.Bd7= Nd7 16.ed5 Rg8?? 17.Qe4 Kf8 18.Qh4?? Qg6? 19.g3 Re8 20.Rae1 Re1? 21.Re1 Kg7 22.Qg5 f6?? 23.Re7+- Kh8 24.Qg6 Rg6 25.Rd7 c6 26.dc6 bc6 27.Rd6 f5 28.Rg6 hg6 29.Ne5 Kg7 30.Nc6 g5 31.a4 Kf7 32.Nb4 a5 33.Nc6 Ke8 34.Na5 Kd8 35.d4 Kc7 36.f4 Kb6 37.fg5 (37.fg5 Ka5 38.g6+-) 1–0. Trkn – Richie, itsyourturn.com, 2000.

5.e3 f6 6.Bc3 Qd5 7.Nf3 c5? (7...Bf5!?=) 8.bc5 Qc5 9.d4 Qh5? (better is 9...cd3!? 10.Bd3 Nc6+=) 10.Bc4+- Ne7 11.0-0 Nbc6 12.Nbd2 Bg4 13.Be2 (13.Qb3!? b6+-) 13...Nd5+/- 14.Bb2 g5 (better is 14...Rc8!?+/-) 15.h3+- Bf3 (15...Bc8+-) 16.Bf3 Qh4 17.Bd5 0-0-0 18.Bc6 bc6 19.Nf3 Qh5 20.Qa4 Qe8 21.Qa7 Qd7 22.Qd7 Rd7 23.Rfc1 Kc7 24.a4 c5 25.dc5 Kc6 26.Bf6 Rg8 27.Ne5 Kc7 28.Nd7 Kd7 29.c6 Kc7 30.Be5 Kc8 31.c7 Bh6 32.Rab1 Re8 33.Rb8 Kd7 34.Rd1 Ke7 35.Re8 Ke8 36.c8Q (36.c8Q Ke7 37.Qf5 g4 38.Rd7 Ke8 39.Qf7) 1–0. Fournier,Frederic – tepartoelpeon, Active, 2008.

4.a3 Nf6 5.d4 ed4 6.Bd4 Be7 7.e4 c5 8.Bc3 0-0 9.Bd3= Nc6 10.Nf3 Ne5 11.0-0 Bg4 12.Be5 de5=+ 13.h3 Bf3–/+ 14.Qf3 Qd4 15.Ra2 cb4 16.ab4 Bb4 17.Na3 Ba3 18.Ra3 b6 19.Rfa1 Rfd8 20.Bf1 a5 21.Re1 Qc5 22.Rb3 a4 23.Rb5 Qd4 24.Reb1? a3 25.Rb6 a2 26.Ra1 Qa1 27.Rf6 gf6 28.Qf6 Qf1 29.Kf1 a1Q 30.Ke2 Qd1 (30...Qd1 31.Ke3 Qd3#) 0–1. alaamattar (2115) – clavecinist (2050), net–chess.com, 2009.

4.a4 c6 5.e4 a6 6.Nf3 a5 7.b5 Nf6 8.Nc3 Be6 9.d4 Bg4 10.de5 de5 11.Qd8+- Kd8 12.Ne5 Be6 13.f4 Bb4 14.f5 Ne4 15.0-0-0 Nd6 16.fe6 Ke7 17.ef7 Nf7 18.Nf7 Kf7 19.Bd3 h6 20.Rhf1 Kg8 21.Bg6 h5 22.Rd8 (22…Bf8 23.Rff8) 1–0. Woschkat,Karl_Heinz – Fritz,Marco, remoteschach.de, 2003.

4.a4 Nf6 5.e3 =+.

4.Nc3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.Nc3 Bd7).

4.Nc3 g6 5.g3 (5.Nf3 Nf6=) 5...Bg7 (5...Nc6 6.b5 Na5 7.Qa4=) 6.Bg2 Bc6 (6...c6 7.b5=) 7.Nf3+= a6 (7...e4 8.Nh4 f5 9.0-0=) 8.a4 (8.b5 ab5 9.cb5 Bf3 10.Bf3 c6+=) 8...Bf3 (8...e4 9.Nh4 f5 10.0-0=) 9.Bf3+= c6 (9...Nc6 10.b5 Na5 11.d3+=) 10.Qb3 (10.0-0 Nf6+=) 10...Nd7 (10...f5 11.0-0+=) 11.h4 (11.a5 f5+=) 11...Ngf6 12.g4 Rb8 (12...h6 13.g5 hg5 14.hg5 Rh1 15.Bh1+=) 13.g5+- Nh5 (13...Ng8 14.Ne4 Qe7 15.Qd3+-) 14.Ne4 White plans c5 14...Nb6 (14...Bf8 15.Bh5 gh5 16.Qd3+-) 15.c5 dc5 (15...Nc8 16.Bh5 gh5 17.f4+-) 16.bc5+- Nd7?? (better 16...Nc8+-) 17.Nd6 (17.Nd6 Kf8 18.Qf7) 1–0. michaelbuss (2805) – Haveago (1860), ChessWorld.net, 2012.

4.d4 a5 5.b5 c6 6.de5 de5 7.Be5 f6 8.Bc3 cb5 9.cb5 Qc7 10.e3 Qc5 11.Bd4 Qb4 12.Nd2 Bb5?? 13.Qh5 Kd8 14.Bb6 Kc8 15.Rc1 Nc6 16.Qe8# 1–0. marre – tazitazi, GameColony.com, 2003.

4.d4 Nc6 5.a3 ed4 6.b5 Na5 7.Qc2 Be6 8.Nd2 d5 9.Bd4 dc4 10.e3 Nf6 11.Nc4= Nc4 12.Bc4 Bc4 13.Qc4 Be7 14.Nf3 0-0 15.0-0 a6 16.a4 c6 17.bc6+/- bc6 18.Qc6 Qd7 19.Qd7 Nd7 20.Rfd1 Nf6 21.Rac1 Rac8 22.h3 Ne4 23.Kf1 Bc5 24.Ke2 Bd4 25.Rc8 Nc3 26.Kf1 Rc8+/- 27.Rd4 f5 28.Nd2 Rc5 29.g3 Ra5 30.Kg2 Ra4= 31.Kf3 Rd4 32.ed4 a5 33.Nb3 a4=+ 34.Nc5 a3 35.Nb3 Kf7 36.Ke3 Nb5 37.Kd3=+ Ke6 38.Kc4 Nd6 39.Kd3 Kd5 40.f3? Kc6?? 41.Kc3=+ Nb5 42.Kc4 h5 43.d5 Kd6?? 44.Kb5+- Kd5 45.Kb4 a2 46.Kc3 g5 47.g4 fg4 48.fg4 hg4 49.hg4 Ke4 50.Nd2 ½–½. wlittle (1705) – shawk, net–chess.com, 2001.

4.e3 b5 5.cb5+/- a6 6.Nc3 ab5 7.Bb5 Bb5 8.Nb5 Nc6 9.Qb3 Rb8 10.a4 d5? 11.Rc1 Bb4? 12.Rc6 Rb5 13.ab5 Ne7 14.Qb4 Nc6 15.bc6 d4 16.ed4 ed4 17.Ne2 d3 18.Qe4 Qe7 19.Qd3 0-0 20.Qg3 g6 21.Qc3 f6 22.Ba3 Qe5 23.Qe5 fe5 24.Bf8 Kf8 25.Nc3 Ke7 26.Nb5 e4 27.Ke2 Ke6 28.Rc1 1–0. marre – Jack4883, internet, 2010.

4.e3 c6 5.d4 ed4 6.Bd4 Nf6 7.Nf3 Be7 8.Bd3 0-0 9.a3+= Na6 10.0-0 Nc7 11.Qc2 Ne6 12.Bc3 d5 13.Nbd2+/- dc4 14.Nc4 b5 15.Nce5 c5 16.Rfd1+- c4 17.Bh7! Nh7 18.Nd7 Qc7 19.Nf8 Rf8 20.a4 Neg5 21.Ng5 Bg5 22.ab5 Nf6 23.Qf5 Bh6 24.Ra6 Nh7 25.Rd7 Qc8 26.Rh6! gh6 27.h4 f6 28.Qh7# 1–0. b4_player – opponent, gamecolony.com, 2007.

4.e3 f5 5.Nf3 Nf6 6.d4 Be7 7.Qb3 e4 8.Nfd2 c6 (8...a5 9.ba5 Nc6 10.Bc3= (10.Qb7?? Rb8 11.Qb3 Rb3 12.ab3 Nb4-+)) 9.Be2 d5 10.0-0 0-0 11.a4 Kh8 12.b5 Be6 13.Nc3 Nbd7 14.Ba3 Ba3 15.Qa3 dc4 16.Bc4 Bc4 17.Nc4 cb5 18.Nb5 a6 (18...b6!?+=) 19.Nbd6+/- Nd5 20.Nb7 Rb8?? (better 20...Qe8+/-) 21.Nd8+- (21.Nd8 Rbd8 22.Rab1+-) 1-0. jhonores (2120) - Elkhateebmostafa (1955), Hourly SuperBlitz Arena, lichess.org, 2020.

4.Nf3 Na6 5.a3= c5 6.b5 Nc7 7.Nc3 Nf6 8.e4 b6 9.Be2 a6 10.0-0 ab5 11.cb5 Be7 12.a4 0-0 13.Qb3 Be6 14.Qc2 Nd7 15.h3 f6 16.Nh4 d5 17.ed5 Nd5 18.Nf5 Bf5 19.Qf5+= Nc3 20.dc3 Rf7? 21.Bc4+- Qc7 22.Bf7 Kf7 23.Qh7 c4 24.Bc1 Nc5 25.Bh6 Rg8 26.Rfe1 Nd3 27.Re4 Qc5 28.Be3 Qc7 29.Rd1 Bc5 30.Qh5 Ke6 31.Rc4 Qe7 32.Rd3 (32.Rd3 Rc8 33.a5+-) 1–0. Wall,Bill – Giacugi, internet, 2003.

4.Nf3 Nc6 5.b5 Nce7 6.Nc3 Nf6 7.e3 Nf5 8.Be2 c6 =. mr (2260) – grahamtrue (2105), net–chess.com, 2009.

4.Nf3 Be7 5.e4 Nf6 6.d3 0-0 7.Be2 h6 8.0-0 Re8 9.a3 Nc6 10.b5+= Na5 11.Qa4 b6 12.Qc2 Nb7 13.d4+= Bf8? 14.de5+- de5 15.Ne5 Be6 16.Nc6 Qd7 17.Rd1 Bd6 18.e5 Bf5 19.Bd3 Bd3 20.Qd3 Nc5 21.Qf3 Nfe4 22.ed6 cd6 23.Nc3 Nb3 24.Ne4 Na1 25.Nf6! gf6 26.Qf6 Qg4 27.Qh8# 1–0. pcmvr (2775) – bar (1905), net–chess.com, 2008.

4.Nf3 Nf6 5.Nc3 Be7 6.e3 0-0 7.d4 Nc6 8.b5= ed4 9.Nd4 Nd4 10.ed4 a6 11.a4 (11.a4 d5 12.ba6 ba6 13.Be2=+; 11.ba6 Ra6 12.Bd3 d5 13.Nd5 Nd5 14.cd5 Bb4 15.Kf1 Ra7=+). Reussner,Hans_Dieter – Paccione,Patrizio, FU003 DESC, 2005.

4.Nf3 Nh6 5.h3 Be7=+ 6.e3 0-0 7.Be2 e4 8.Nh2 f5 9.0-0 Bh4 10.d3 f4 11.Ng4 Qg5?? 12.ef4+/- Qf4 13.Bc1 Qf7 14.Bh6 Bg4= 15.Be3?? Bf5 16.de4= Be4 17.Nc3 Bf5 18.Bf3 c6 19.Qd6 Be7 20.Qc7 Bb4 21.Qf7 Rf7 22.Ne4 Bh3 23.Ng5+= Bg2? 24.Kg2+- Rf6 25.Be4 h6 26.Bd4 hg5= 27.Bf6 gf6 28.Bf5 Na6 29.Rad1 Nc5 30.Rh1 Na4?? 31.Rh7 Nc5 32.Rdh1 (32.Rdh1 Kf8 33.Rh8 Ke7 34.Ra8+-) 1–0. gtate (1930) – mcgoo (1975), net–chess.com, 2004.

5.Nf3 Nf6 6.e3 Be7 7.Qc2 h6 8.d4 ed4 9.Nd4 0-0 10.a3 c5 11.bc5 dc5 12.Nf5 Nc6 13.Be2 Bf5 14.Qf5 Qc7 15.0-0 Rfe8 16.Rfd1 Qe5 (16...Qc8!? 17.Qc8 Rac8+/-) 17.Qe5+- Ne5 18.Nb5 Rec8?? (better is 18...Bd8+-) 19.Be5 1–0. pcmvr – lga (2235), net–chess.com, 2014.

5.Nf3 Nh6 6.d4 b5 (6...ed4!? 7.Qd4 Na6=) 7.cb5+- cb5 8.e4 (8.de5 de5 9.Ne5 Bb4+-) 8...Nc6 (8...a6!?+-) 9.Bb5+- ed4 (9...Nb4!? 10.Bd7 (10.de5?! Bb5 11.Nb5 Qa5+=) 10...Qd7 11.Rb1+-) 10.Nd5 (better 10.Nd4 Nd4 11.Bd7 Kd7 12.Qd4+-) 10...Nb4? (better 10...Rb8 11.Nd4 Ne7 12.Bd7 Qd7+-) 11.Bd7 (11.Nb4?! Bb5 12.Nd4 Bd7+-) 11...Qd7 12.Nb4 Qg4 (12...Rb8 13.Qd4 f5 14.Bc3+-) 13.0-0 Qd7 (13...Rb8 14.a3+-) 14.Nd4 (14.Nd5 Rb8 15.Qd4 Rb7+-) 14...Rc8 (14...Rb8 15.Bc3+-) 15.Nf5! Nf5 16.ef5 Be7 (16...Qb5 17.Re1 Kd8+-) 17.Bg7 Rg8 18.f6 Bf6 (18...Rc5 19.f4 a5 20.Re1 ab4 21.Re7 (21.fe7?! Rg7 22.a3 Qc6+-) 21...Qe7 22.fe7 Ke7 23.Qg4+-) 19.Re1 Be7 20.Nd5 Qh3 (20...Rg7 21.Nf6 Kd8 22.Nd7 f6+-) 21.Qa4 (21.Qa4 Kd8 22.Qa5 Kd7 23.Re7 Kc6 24.Nb4) 1–0. michaelbuss (2795) – tvchipshop, ChessWorld.net, 2012.

5.a4 Nf6 6.Nf3 Be7 7.d3 Bg4 8.Be2 Nbd7 9.0-0 0-0 10.Nc3 b6 11.Nd2 Be2 12.Qe2 c5 13.b5 a5 14.Rae1 Re8 15.f4 ef4 16.Rf4 Ne5 17.Nde4 Ne4+= 18.Re4 Bf6 19.Nd5+/- Ra7 20.Rf1 Re6 21.Rf5 g6 22.Nf6+- Rf6 23.Rf6 Qf6 24.d4 cd4 25.ed4 Nd7 26.c5! d5 27.Re7 Qf5 28.c6 Qb1 29.Qf1 Qf1 30.Kf1 Kf8 31.Ba3 Ra8 32.cd7 Kg7 33.Re8 Re8 34.de8Q h5 35.Bf8 Kf6 36.Qe5# 1–0. pierre – ajay1967, chess.com, 2007.

5.a4 Nf6 6.Nf3 Be7 7.d4 ed4 8.Bd4 c5 9.Bc3 (9.bc5 dc5 10.Bc3 0-0 11.Bd3 Nc6 12.0-0 Bg4 13.a5 Bf3 14.gf3=) 9...0-0 (9...cb4 10.Bb4 Nc6 11.Bc3 0-0 12.Bd3 Qc7 13.Nbd2 Ne5 14.Be2=) 10.b5 (10.Bd3 cb4 11.Bb4 Nc6 12.Bc3 Qc7 13.Nbd2 Ne5 14.Be2=) 10...a5 (10...ab5 11.ab5 Ra1 12.Ba1 Be6 13.Ng5 d5 14.Qd3=) 11.Be2 (11.Bd3 Bg4 12.0-0 d5 13.Nbd2 dc4 14.Nc4+=) 11...b6 (11...Be6 12.0-0 d5 13.Qc2 Qb6 14.cd5+=) 12.0-0 (12.Qc2 Be6 13.Ng5 Nbd7 14.Bf3+=) 12...Bc8 (12...Be6 13.Qc2 Nbd7 14.Ng5+=) 13.Bb2 (13.Qc2 Bb7 14.Rd1+=) 13...Bb7 (13...Be6 14.Qc2+=) 14.Nc3 Nbd7 15.Qc2 Re8 16.Rfd1 Qc7 17.Nd2 d5 18.Bf3 dc4 19.Bb7 Qb7 20.Nc4 Rad8 21.Rd2 Qc7 22.Rad1 Nf8 23.Ne2 Rd2 24.Rd2 Rd8 25.Rd8 Qd8 26.Ne5 Bd6 27.Nc6 Qd7 28.Bf6 gf6 29.g3 Bc7 30.Nc3 Ng6 31.Qe4 Qe6 32.Nd5 Be5? (better is 32...Qe4 33.Nf6 Kf8 34.Ne4 Ne7+/-) 33.Nb6+- f5 34.Qd5 Bc7 35.Qe6 fe6 36.Nc4 Kf8 37.b6 (37.b6 Bb6 38.Nb6+-; worse is 37.N4a5 Ba5 38.Na5 Ne5+-; worse is 37.N6a5 Ba5 38.Na5 Ne5+-) 1–0. Zerebecki,Dawid (1675) – Stobbe,Patryk, Kowalewo Pomorskie Poland, 2010.

5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 a6).

5.a3 Be7 6.Nf3 f5 (6...Nf6 7.b5 Nb8 8.d4=) 7.g3 (better is 7.d4!? ed4 8.ed4+=) 7...Nf6+= 8.Bg2 (8.d3 e4 9.Nfd2 ed3=) 8...0-0 (8...e4!? 9.Nd4 Ne5-+) 9.0-0 Qc8 10.d3 f4 11.ef4 ef4 12.Nbd2 Bh3 13.Ne4 (worse is 13.gf4 Bg2 14.Kg2 Qg4 15.Kh1 Qf4+=) 13...Bg2 14.Kg2 fg3 15.fg3 Ng4 16.Qd2 Nce5 17.Ne5 Ne5 18.Be5 de5 19.Qe2 Qe6 20.Rf8 Rf8 21.Rf1 Rf5 22.Rf5 Qf5 23.Qf3 Qd7 24.Qd1 Qd4 25.Nf2 a6 26.Qb3 Kf8 27.c5 a5 28.h3 ab4 29.ab4 c6 30.Qc4 Qb2 31.Kf3 Qd2? 32.Ne4 Qd1 33.Kg2 Qe2 34.Nf2 Qb2 35.Qe4 h6? 36.h4 Kf7? 37.Qf3 Bf6+= 38.Qg4 ½–½. Fournier,Frederic (1715) – Sumerien (1690), rated blitz game (2/12), 2002.

5.b5 Nb4 6.a3 Nf6? 7.ab4+- Ne4 8.Qf3 Ng5 9.Qb7 Be7 10.Nc3 c6 11.bc6 Qc8 12.cd7 Qd7 13.Qa8 Bd8 14.Ra7 Qe6 15.Qc6 Kf8 16.Ra8 Qe8 17.Qd6 Be7 18.Re8 Ke8 19.Qc6 Kd8 20.Nd5 Ne6 21.Nb6 Nc7 22.Qd7 1–0. marekt – MC Q, ChessWorld.net, 2004.

5.b5= Nce7 6.Nc3 b6 7.d4 Nf6 8.Nf3 Be6 9.de5+/- Ng4 10.ed6+- cd6 11.Nd4 Ne5 12.Ne6 fe6 13.f4 N5g6 14.Bd3 Nf5 15.Bf5 ef5 16.Nd5 Ne7 17.0-0 Rc8 18.e4 fe4 19.Qh5 Kd7 20.Qg4 Ke8 21.f5 Rc4 22.Qh5 Kd7 23.f6 Nd5 24.Qd5 Rc5 25.Qb7 Rc7 26.fg7 (26.fg7 Rb7 27.gh8Q+-) 1–0. pierred (2595) – tata (2000), net–chess.com, 2008.

5.b5 Nce7 6.Nc3 c6 7.Nf3 cb5 8.Nb5 a6?? 9.Nd6# 1–0. Fritz 10 – NN, 2007.

5.b5 Nce7 6.Nc3 Nf6 7.Nf3 h6 8.d4 e4 9.Nd2 Bf5 10.Rc1 b6 11.Qa4 g5 12.Qc2 Bg7 13.Be2 0-0 14.0-0 Re8 15.Rfd1 Ng6 16.Nf1 Nh4 17.Ng3 Qc8 18.a3 Qd7 19.Nd5 Bg4 20.Bg4 Ng4 21.h3 Nf6 22.Nf6 Bf6 23.Ne4 Re4? 24.Qe4 Re8 25.Qd5 h5 26.g3 Qh3 27.gh4 Qh4 28.Qg2 Re4 29.Kf1 Rg4 30.Qc6 Re4 31.Qc7 g4 32.Ke2 Qg5 33.Qa7 Qf5 34.Qa8 Kg7 35.Qc6 Qf3 36.Kd3 Rf4 37.Rf1 Bh4 38.Qd6 Qe4 39.Ke2 Rf5 40.Qc6 Qe7 41.Qb6 Bg5 42.d5 Kh7 43.Qb8 Bf4 44.Qh8 Kg6 45.Qg7# 1–0. pierre – ddjjbb4455, ChessWorld.net, 2005.

5.Be2 Nf6 6.Nf3 0-0 7.d3 a6 8.0-0 Nc6 9.a3 b5 10.cb5 ab5 11.Nc3 Qb8 12.d4 ed4 13.Nd4 Nd4 14.ed4 c5 15.dc5 dc5 16.bc5 Bc5 17.Ne4 Ne4 18.Qd7 Rd8 19.Qb5 (19.Qg4 Bd4 20.Bd4 Rd4=) 19...Qf4 (19...Qb5!? 20.Bb5 Nf2–/+) 20.g3= Bf2 21.Kg2 Qe3 22.Qe5 f6 23.Qe6 Kh8 24.Bf3?? (24.Ra2 Be1 25.Qg4+= (25.Re1 Qf2 26.Kh3 Ng5 27.Kh4 Qh2 28.Kg4 Qh3 29.Kf4 Ne6 30.Ke3 Qg3 31.Bf3 Qe1 32.Be2 Qg3 33.Bf3 Qg1 34.Ke4 Nc5 35.Kf4 Qg5)) 24...Rd2-+ 25.Qe4 Be1 (better is 25...Bg1! 26.Rf2 Qf2 (26...Rf2?! 27.Kg1 Rf3 28.Qe3 Re3 29.Kf1-+) 27.Kh3 Qh2 28.Kg4 Rf8 29.Rg1 f5 30.Qf5 Rf5 31.Kf5 Qg1-+) 26.Kh1 Qe4 27.Be4 Rb2 28.Rfe1 Re8 29.Bg2 Rd8 30.Reb1 Rb1 31.Rb1 Kg8 32.Ra1 Kf7 33.a4 Ke6 34.a5 Ke5 35.a6 1–0. Fournier,Frederic (1630) – Tarki (1710), Active (3/0), 2005.

5.Nf3 Nf6 6.Be2 Nc6 7.b5= Nb8 8.d4 ed4 9.Nd4 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 c6 13.0-0 Qa5 14.Nc3 cb5 15.cb5 0-0 16.Qb3 Bg4 17.Bg4+- Ng4 18.h3 Ne5 19.Nf5 Re8 20.Nd5 Bf8 21.Nh6!! Kh8 22.Be5 de5 23.Nf7 Kg8 24.Ne7!! Be7 25.Nh6 Kh8 26.Qg8!! Rg8 27.Nf7 1–0. pcmvr (2775) – grahamtrue (2070), net–chess.com, 2008.

5.a4 b6 6.b5 Bg4 (6...a6 7.d4=) 7.Qc2 (7.Be2 Bd7=) 7...g6 (7...a6 8.Be2 Be6 9.Nf3=) 8.Bd3 Be7 9.h3 Be6 10.Be2 c6 11.Bf3 0-0 12.d3 (12.bc6 Qe8 13.c7 Nc6=) 12...Bd7 (12...Qc7 13.Nc3 Rc8 14.Nge2=) 13.Nc3 (13.Ne2 a6+=) 13...a5 (13...a6!?=) 14.Nge2+= h5 (14...Re8 15.0-0+/-) 15.Rc1 Ra7 16.bc6 Bc6 17.Nd5 Bd5 18.cd5 Rc7?? (better is 18...Na6+=) 19.Qc7+- Qc7 20.Rc7 Bd8 21.Rc4 Be7 22.Kd2 Kg7 23.Rhc1 Nbd7 24.g4 hg4 25.hg4 g5 (25...Rh8 26.Rc7 Bd8 27.Rc8+-) 26.Ng3 Rh8 (26...Re8+-) 27.Nf5 Kg6 (27...Kf8 28.Rc8 Ne8 29.R1c7+-) 28.Ne7 Kg7 29.Nf5 Kg6 30.Nd6 Rh2 31.Ke2 Nc5 32.Be5 Nb3 33.Bh2 Nc1 34.Rc1 (34.Rc1 b5 35.ab5+-) 1–0. Hingst,Thomas (2095) – Korn,Lothar (1700), remoteschach.de, 2009.

5.a4 Be7 6.b5 +=.

5.Nc3 Nc6 6.b5= Ne7 7.Nf3 Ng6 8.Be2 Be7 9.d4 0-0 10.a4 c6 11.0-0 e4 12.Nd2 d5 13.Qb3 Be6= 14.Rac1 Rc8 15.Rc2 Qd6 16.c5 Qd7 17.a5 Bg4 18.f3 ef3 19.Nf3 Bf5=+ 20.Rd2 Be4 21.Ne5 Qc7 22.b6+= ab6 23.ab6 Qd8 24.Ra1 Ra8 25.Ra7 Qb8?? 26.Qa4?? Ra7?? 27.ba7+= Qa8 28.Bc1 Ne5 29.de5 Nd7?? 30.Ne4+- Ne5 31.Nd6 Bd8?! 32.Rb2 Bc7 33.Nb7 Bb8 34.ab8Q Qa4 35.Qe5 (35…Ra8 36.Qc3+-) 1–0. Zylla,Johannes – Gierth, BS–MK Kreisliga, 1995.

5.Nc3 Be7 6.Nf3 =+.

5.Nc3 g6 6.b5 Bg7 7.Nf3 0-0 8.Be2 c6 9.0-0 cb5 10.cb5 a6 11.a4 Qb6 12.d4+= ab5 13.de5 de5 14.ab5 Ra1 15.Qa1 e4 16.Ne4!+- Bb5?? 17.Bf6 Be2 18.Bg7 Bf1 19.Nf6 (19.Nf6 Qf6 20.Qf6+-) 1–0. wiking – KasparovPadawan, internet, 2010.

5.Nc3 g6 6.Nf3 Bg7 7.Be2 a6 8.a4 0-0 9.0-0 c6 10.b5 ab5 11.ab5 Ra1 12.Qa1 c5 13.d4 ed4 14.ed4 Bg4 15.d5 b6 16.Qa8 Nbd7 17.Qd8 Rd8 18.Ra1 Bf3 19.Bf3 Ne5 20.Be2 Re8 21.Ra6 Ned7 22.Kf1 Ne4 23.Ne4 Re4 24.Bg7 Kg7+= 25.Ra7 Re7 26.h4 h5 27.g4 hg4 28.Bg4 f5 29.Bf3 Kf6 30.Kg2 Rh7 31.Kg3 Ke5 32.Be2 Re7 33.f3 Kd4 34.Kf2 Rf7 35.Rc7 Ne5–/+ 36.Rf7 Nf7 37.f4 Nd8 38.Kg3 Nb7 39.h5 gh5 40.Kh4 Na5 41.Kh5 Nc4 42.Bc4 Kc4 43.Kg5 Kd5 44.Kf5 c4 45.Kg4 c3 0–1. mrkt – Lazar, itsyourturn.com, 2000.

5.Be2 Be7 6.Nc3 0-0 7.Nf3 a6 8.0-0 c6 9.a3 b5 10.d4 e4 11.Nd2 Bf5 12.d5 c5 (12...a5!?+=) 13.cb5+- ab5 14.Bb5 Nbd7 15.Qc2 Ne5 16.Nde4 Be4 (16...Ne4!? 17.Ne4 Rb8+-) 17.Ne4 Nd5 18.bc5 dc5 (18...Nc7 19.a4 Nb5 20.ab5 Qd7+-) 19.Be5 f6 (19...Qb6 20.Rfb1+-) 20.Bg3 Rc8 (20...f5 21.Rfd1 fe4+-) 21.Rfd1 f5 22.Rd5! Qd5 (22...Qb6 23.Nd6 Bd6 24.Bc4+-) 23.Bc4 Qc4 24.Qc4 Kh8 25.Nd6 Bf6 (25...Bd6 26.Bd6 Rfd8 27.Bc5+-) 26.Nc8 Ba1 27.Qc5 Rd8 28.Nd6 Rb8 29.Nf7 Kg8 30.Bb8 (30.Bb8 Kf7 31.Qf5 Ke7 32.Qh7+-) 1–0. Fournier,Frederic (2215) – Grey,James (1680), Northern Lights, 2002.

5.Nf3 c5 6.bc5 (better 6.a3=+) 6...dc5 (better 6...e4 7.c6 Nc6=+) 7.Ne5+- Bd6 8.Be2 Be5 (8...0-0 9.Qb3+-) 9.Be5 0-0 10.Nc3 (10.0-0+-) 10...Nc6 (10...Re8!? 11.Bf4 Nc6+-) 11.Bd6+- Re8 12.Bg3 (12.Bc5!? Rc8+-) 12...Nb4 (12...Bf5 13.0-0+=) 13.a3+- Nc6 14.0-0 a6 (14...Be6 15.Bh4+-) 15.d4 (better 15.Bh4!?+-) 15...cd4+= 16.ed4 (16.Nd5 Ne4 17.Bc7 Qc8 18.ed4 Be6+=) 16...Qa5 17.Qd2 (better 17.Rc1 Qa3 18.d5+=) 17...Nd4?? (better 17...Re2 18.Qe2 Qc3–/+) 18.Qd4+- Rac8 (18...Bc6 19.Bd6+-) 19.Bf3 (19.Bh4 Bf5 20.Bf6 gf6+-) 19...Bc6 (19...b5 20.c5 Bc6 21.Bc6 Rc6 22.Rfd1+-) 20.Bc6 (20.Nd5 Nd5 21.cd5 Bb5+-) 20...Rc6 21.Nd5 Kf8 (21...b5 22.Nf6 Rf6 23.Qc5+-) 22.Nf6 gf6 (22...Rf6 23.Rab1+-) 23.Bd6 Kg8 24.Bb4 (24.Qg4 Kh8 25.c5 Qd8+-) 24...Qe5 (24...Rd8 25.Qf6 Rf6 26.Ba5+-) 25.Qe5 (better 25.Qg4 Kh8 26.Rae1 Rg8+-) 25...fe5 26.Rac1 Rec8 (26...b6 27.Rfd1+-) 27.Rfd1 (27.Rfe1!? f6 28.f4 ef4+-) 27...Rc4 28.Rc4 Rc4 29.g3 (29.Kf1 Kg7+-) 29...Kg7 (29...Rd4 30.Rd4 ed4 31.Kf1+-) 30.Rd7 Rc1 (30...b5 31.Rd6+-) 31.Kg2 b5 32.Rd6 f5 (32...Rc7 33.Ra6 e4 34.g4+-) 33.Ra6 e4 34.Rb6 h5 (34...Rc2 35.Rb5 Kf6 36.Bc5+-) 35.Rb5 Kg6 (35...Kf6 36.Rb6 Kf7 37.Rh6+-) 36.Rb6 Kg5 (36...Kg7+-) 37.Bd2 (37.Bd2 f4 38.Bc1+-; 37.h4 Kg4 38.Rg6) 1–0. jaddwarrior (2030) – wordtweaker, ChessWorld.net, 2015.

5.Nf3 Nc6 6.b5= Na5 7.Bc3 b6 8.Ba5 ba5 9.a4 e4 10.Nd4 Bg4 11.Be2 d5?? 12.Bg4+- dc4 13.Be2 c5 14.Nc6 Qd5 15.Nc3 Qg5 16.0-0 Bd6 17.Bc4 Rc8? 18.f3 Qh5 19.fe4 Qh2 20.Kf2 Ng4 21.Qg4 0-0 22.Rh1 Qg3 23.Qg3 Bg3 24.Kg3 h6 25.Nd5 Kh8 26.Nde7 Rce8 27.Raf1 Kh7 28.Bf7 g5 29.Bg6 Kg7+- 30.Be8 Re8 31.Nf5 Kf7 32.Nh6 Kg6 33.e5 Re6 34.Rf6! Rf6 35.ef6 Kf6 36.Na7 Ke7 37.b6 Kd7 38.Rb1 c4 39.b7 Kd6 40.b8Q Ke6 41.Qe8 Kd5 42.Rb5 Kd6 43.Nf5 Kc7 44.Qc8# (44.Qe7#) 1–0. Trkn – sandyman33, itsyourturn.com, 2000.

5.Nf3 Be7 6.d4 e4 7.Nfd2 0-0 =+.

5.Nf3 Be7 6.d4 e4 7.Nfd2 Bf5 8.Nc3 c6 9.b5 d5 10.a4 0-0 11.Qb3 Qd7 12.Ba3 Re8 13.Be7 Re7 14.h3 a6 15.b6 a5 16.c5 Bg6 17.Be2 Ne8 18.0-0-0 Na6 19.Ba6 Ra6 20.Ne2 f5 21.Nf4 Bf7 22.h4 g6 23.Nf1 Ng7 24.Ng3 Ne6 25.Ne6 Qe6 26.Ne2 Qf6 27.Rdg1 Be6 28.Qd1 Rg7 29.Nf4 Bd7 30.Qb3 Qe7 31.g3 h6 32.h5 g5 33.Ng6 Qf6 34.Qd1 Be8 35.Ne5 Qe7 36.f3+/- ef3 37.Qf3 Bd7 38.Re1 Bc8 39.Kd2 g4 40.Qf4 Rg5 41.Rh2 Rb6= 42.cb6 Qb4 43.Kc1?? Qa3?? 44.Rb2?? Rh5?? 45.Qf2 Qa1 46.Kc2 Qa4 47.Kb1 Qa3 48.Rd1 Rh3? 49.Nd3 Qd6? 50.Rg1 a4 51.Nc5 a3 52.Rb3 Qd8 53.Ka2 h5 54.Ka3 h4 55.gh4 Rh4 56.Qf4 Qe7 57.Qe5 Qe5 58.de5 Kf8 59.Nd3 Ke7 60.Nf4 Rh2 61.Rc3 Be6? 62.Rg2 Rh1? 63.Rcc2 Rh7?? 64.Rh2 (64.Rh2 Rh2 65.Rh2+-) 1–0. Krafzik,Joachim (2070) – Mani,Martin (1710), Liechtenstein Seniors op, 2004.

5.Nf3 Be7 6.Be2 0-0 7.0-0 a5 8.b5= b6 9.d4 e4 10.Nfd2 c6 11.Nc3 d5 12.a3 Be6 13.bc6+= dc4 14.Nce4 Ne4= 15.Ne4 Bd5? 16.Nd2 b5+= 17.Bf3 Nc6+/- 18.e4 c3? 19.Bc3+- Bc4 20.Nc4 bc4 21.d5 Na7 22.Qd4 Bf6 23.Qc4 Bc3 24.Qc3 Nb5 25.Qe3 Rc8 26.Rfc1 Qf6 27.e5 Rc1 28.Rc1 Qh4 29.d6 Qd8 30.a4 Nd6 31.ed6 Qd6 32.Qc5 Qd2 33.Rd1 Qb4 34.Qb4 ab4 35.Rb1 Re8 36.Bc6 Re5 37.f3 Rc5 38.Rb4 (38…g5 39.Rb8 Kg7 40.Rc8+-) 1–0. Dopper,Johan – Bom,Jan, 1995.

5.Nf3 Be7 6.Be2 0-0 7.d3 c6 8.0-0 Be6 9.a3 d5 (9...a5!?=) 10.cd5 cd5 11.Nbd2 Nc6 12.b5 Nb8 13.Ne5 Bd6 14.Nef3 Qc7 (14...Nbd7 15.Nd4+/-) 15.h3 (15.Bf6 gf6 16.d4 Rc8+-) 15...a6 16.Rc1 (16.Bf6 gf6 17.ba6 Ra6+-) 16...Qd7 17.ba6 Ra6 18.d4 Nc6? (better is 18...Rb6 19.Qc2 Bf5+=) 19.Ba6+- ba6 20.Ne5 Ne5 (20...Be5 21.de5 Rb8+-) 21.de5 Bb8 (21...Rb8 22.Bd4 (22.ef6?! Rb2 23.Nf3 gf6+-; 22.ed6?! Rb2 23.Rb1 Rb1 24.Qb1 Qd6+-) 22...Ne4 23.ed6 Qd6 24.Ne4 de4 25.Qc2+-) 22.ef6 Qd6 23.fg7 (better is 23.Nf3 g6 24.Qa4+-) 23…Qh2 0–1. Fournier,Frederic (1825) – horindio, Owl21.com, 2008.

5.Nf3 g6 6.Be2 Bg7 7.0-0 0-0 8.b5 c6 9.a4 c5 10.d3 a6 11.Nfd2 ab5 12.ab5 Ra1 13.Ba1 b6 14.Nc3+= Bf5 15.e4 Be6 16.Nd5 Bd5 17.ed5 Nbd7 18.Ne4 Ne4 19.de4 Nf6 20.Bf3 Qa8 21.Bb2 Qa2+= 22.Qa1?? Qa1?? 23.Ra1+/- Rb8 24.Bc3 ½–½. valpa – schnitzly, playchess.de, 2002.

5.Nf3 h6 6.d4 ed4 7.Bd4 c5 8.bc5 dc5 9.Bb2 Nc6 10.Nc3 Bg4 11.Be2 Qd1 12.Rd1 Bf3 13.Bf3 Bd6?? (better is 13...Nd7+/-) 14.Rd6 0-0 (14...Na5 15.Nb5 Nc4 16.Bf6 gf6 17.Rd5+- (worse is 17.Bb7 Nd6 18.Nd6 Kd7 19.Ba8 Kd6+-)) 15.Bc6 bc6 16.Rc6 Rfd8 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.Na3 b6 5.Nf3= Ngf6 6.e3 Bb7 7.d4 Bf3 (7...ed4 8.Nd4 d5 9.Ndc2=) 8.Qf3 e4 9.Qf5 g6 10.Qg5 h6 11.Qh4 Bg7 (11...d5 12.Nc2=) 12.Be2+= c5 13.Nb5 Bf8? (13...Qb8 14.Qf4+/-) 14.Qf4 ( 14.dc5 bc5 15.bc5+-) 14...Qb8?? ( 14...cb4 15.a3 ba3 16.Ba3 g5+/-) 15.dc5+- bc5 (15...g5 16.Qf5 Be7 17.cd6 (17.Nd6?! Bd6 18.cd6 Qd6+-) 17...Bd6 18.Bf6 Nf6 19.Qf6 Bb4 20.Kf1+-) 16.Bf6 (16…Nf6 17.Qf6+-) 1–0. Wall,Bill – SteveV, internet, 2002.

4.a4 Ngf6 5.d3 (5.Nc3 a5 6.b5 Nc5+=) 5...Be7 (5...d5 6.cd5 Bb4 7.Nd2 Nd5 8.e4–/+) 6.g3 (6.Nf3 a5 7.b5 0-0+=) 6...d5–/+ 7.b5 a6 (7...dc4 8.dc4 Ne4 9.Bg2 Bb4 10.Kf1–/+) 8.Bg2 (8.cd5 Nd5 9.Bg2 Bb4 10.Nd2=) 8...c6 (8...Bb4!? 9.Bc3 Qe7 10.ba6 Ra6 11.cd5 0-0+=) 9.Nf3 (9.Nd2 0-0=) 9...ab5 10.ab5 Ra1 11.Ba1 d4 12.bc6 bc6 13.0-0 Qa5 14.Bb2 0-0 15.Nfd2 (15.Nbd2 Qc7=) 15...Qa2 (15...Nc5!?+=) 16.Qb3= Qa6 17.Ba3 ½–½. Vavra,Vladimir – Korinek,Jaroslav (1795), Valasska Bystrice CZE, Sokol Open, 2014.

4.Qc2 f5 5.Nf3 g6 6.e3 Bg7 7.Nc3 Ngf6 8.Be2 0-0 (8...e4 9.Ng5 Ne5 10.0-0=) 9.d3 a5 10.b5 Nc5 11.d4 ed4 12.Nd4 (12.ed4 Nce4+=) 12...Nce4 (12...f4 13.ef4 Nh5 14.Nd5 Nf4 15.0-0=) 13.0-0 Re8 14.Rad1 b6 (14...Nc3 15.Qc3 Ne4 16.Qc2=) 15.Nc6 Qd7 16.Nd5 Nd5 (16...Qf7+=) 17.Rd5 (better 17.cd5!? Bb2 18.Qb2+/-) 17...Bb7=+ 18.Bg7 (18.c5 bc5 19.Rdd1 Bb2 20.Bc4 Kh8 21.Qb2 Qg7=+) 18...Qg7 (18...Kg7 19.Qb2 Kh6 20.f3+=) 19.Bf3= Bc6 20.bc6 Nc5 21.Rfd1 Re7 22.h4 (22.R5d4 Rae8=) 22...Rae8=+ 23.Qd2 Qf6 24.g3 Re5 25.Qd4 Kf7 26.Re5 (26.h5 Kg7=+) 26...Qe5 (26...de5 27.Bd5 Kg7 28.Qc3-/+) 27.Bd5= Kf6 28.Qf4 (28.a3 Na4=) 28...Qf4=+ 29.gf4 h6 30.Kg2 Re7 31.Kf3 Rg7 32.Rg1 Re7 33.Rb1 (33.Rd1 Ne4=+) 33...Rg7 34.Rg1 Re7 35.Rb1 (35.Rd1 a4=+) 35...Nd3 36.Rd1 Nc5 (36...Nb4 37.a3 Na6 38.h5=+) 37.Rb1= ½-½. bjoernsen (2345) - MrWalker (2420), Rated Blitz game, lichess.org, 2016.

4.Qc2 Ngf6 5.Nf3 Be7 6.e3 0-0 7.Be2 c6 8.d3 Qc7 9.Nbd2 Re8 10.0-0 Nf8 11.Rfd1 Ng6 12.Rac1 Bd7 13.Qb1 Qc8 14.Qa1 Bg4 15.a3 Qf5 Black plans e4 16.Bf1 (16.h3 Bf3 17.Nf3 a5+=) 16...Qh5 17.Re1 Nh4 18.Nh4 Qh4 19.d4 e4 20.f3 ef3 21.Nf3 Bf3 22.gf3 Nh5 23.Bc3 Bg5 24.f4? (better 24.Bd2=+) 24...Qg4-+ 25.Kh1 Bh4 26.Be2?? (26.Qb2 Be1 27.Re1-+) 26...Ng3! 27.hg3 (27.hg3 Qh3 Mate attack) 27...Qh3 28.Kg1 Bg3 (28...Bg3 29.Bd2 Qh2 30.Kf1 Qf2) 0-1. bjoernsen (2295) - Termenoil (2310), Rated Blitz game, lichess.org, 2016.

4.Nc3 c5 5.bc5 Nc5 6.e3 e4 7.d4 ed3 8.Bd3 Nf6 9.Nf3 Be7 10.0-0 0-0 11.Bc2 a6 12.Qd4 b5 13.cb5+/- ab5 14.Nb5 Ba6 15.a4 Re8 16.Qf4+- d5 17.Rfd1 Rc8 18.Bf5 Rc6 19.Be5 Nh5 20.Qg4 g6? 21.Nfd4 Rb6 22.Bc7 Qa8 23.Bb6 Ne4 24.Nc7 Qb7 25.Ne8 Qb6 26.Be4 de4 27.Qe4 (27.Qe4 Bf8 28.Qa8+-) 1–0. mrkt – sieciu1, kurnik, 2007.

4.Nc3 c6 5.a3 Qc7 6.Nf3 Ngf6 7.g3 g6 8.Bg2 Bg7 9.0-0 0-0 10.Rc1 Re8 11.e3 Nf8 12.h3 a5 13.d4 ab4 14.ab4 Bd7 15.e4 Bh6 16.Rc2 ed4 17.Qd4 Bg7 18.Rd1 Ne6? 19.Qd6+/- Qd6 20.Rd6 Bf8 21.Rd1+- Bb4 22.e5 Nh5? 23.Rd7 Nc5 24.Rd1 (24.Rd1 h6 25.Re2+-) 1–0. grandmaster goldberg – brawn, ChessWorld.net, 2005.

4.Nc3 f5 5.e3 Ngf6 6.Qc2 g6 7.Be2 Bg7 8.d4 0-0 9.Nf3 Qe7 10.c5 Kh8 11.0-0 a6 12.Qb3 h6 13.a4 White plans b5 13...e4 14.Nd2 g5 15.cd6 cd6 16.b5 f4 17.Rac1 Re8 18.Ba3 Nb6? (better is 18...Bf8+/-) 19.ba6+- f3 20.gf3 (20.Qb6?! fe2 21.Ne2 Ra6+/-) 20...ef3 21.Nf3 (21.Nf3 Qd8 22.a5+-; 21.Qb6?! fe2 22.Rfe1 Ra6+=) 1–0. pcmvr – mgilbert (2115), net–chess.com, 2016.

4.d3 b6 5.Nf3= Bb7 6.Nbd2 Ngf6 7.g3 g6 8.Bg2= Bg7 9.0-0 0-0 10.Qc2 Qe7 11.a3 c5 12.b5 Nh5 13.Ne4 f5 14.Nc3 Ndf6 15.e4 f4 16.a4 fg3 17.fg3 Ng4 18.Rae1 Bh6= 19.Nd1 Rf7 20.Bh3 Nhf6 21.Bc1 Bg7 22.Bg5 Qf8? 23.Nf2 Nf2+= 24.Qf2 h6? 25.Be6+- Ng4? 26.Bg4 hg5 27.Be6 Bc8 28.Bf7 Qf7 29.Ng5 Qf2 30.Rf2 Bh6 31.Nf3 Bg4 32.Kg2 Rf8 33.h3 Be6 34.g4 Bf4 35.Ng1 Re8 36.Ne2 Be3 37.Rf3 Bg5 38.Ref1 Kg7 39.Kg3 Rh8 40.Kg2?? Bh4?? 41.Ra1 Bd8 42.Nc1 Rg8 43.Nb3 Rh8 44.a5 Bc8 45.ab6 Bb6 46.Raf1 Be6 47.Rf6 Re8 48.Nd2 Bd8 49.R6f3 Bc7 50.R3f2 Bb6 51.Nf3 Bd8 52.Ra1 Bb6 53.Ng5 Bg8 54.Raf1 Bd8 55.Nf7 Bh4 56.Rf3 Be7 57.h4 Rf8 58.Ng5 Re8 59.Ra1 Ra8 60.b6 a5 61.Ra5! Ra5 62.b7 Ra2 63.Rf2 Ra3 64.b8Q Rd3 65.Qc7 (65.Qc7 Rg3 66.Kg3 d5 67.Qe7 Bf7 68.Rf7 Kh6 69.Qf8#) 1–0. Leshkevich,Vladimir – Rodzhero,Mateo, RUS–ch U10 Serpukhov, 2001.

4.d4 a5 5.b5 Ngf6 6.e3 g6 (6...Be7 7.Nf3=) 7.Nf3 Qe7 8.de5 de5 9.Nbd2 Bg7 10.Bc3 0-0 (10...e4 11.Nd4=) 11.Be2 e4 12.Nd4 Re8 13.a4 h5 (13...Nc5 14.0-0=) 14.h3 h4 15.N2b3 Nc5 16.0-0 (worse 16.Ba5 Nb3 17.Nb3 Nd7=+) 16...Nfd7 17.Ba5?? (better 17.Qc2+=) 17...Bd4-+ 18.Nc5? (better 18.ed4 Nb3 19.Qb3 Ra5 20.Qc3-+) 18...Ba1 (18...Ra5?! 19.ed4 Nc5 20.dc5 Qc5 21.Qd5=; 18...Bc5?! 19.Bc7 Ne5 20.b6-+) 19.Qa1 (19.Nd7 Ra5 (worse 19...Qd7 20.Bc7 Qd1 21.Bd1-+) 20.Qa1 Bd7-+) 19...Ra5 (19...Nc5!? 20.Bb4 Qg5 21.Kh1-+) 20.Nb3 Ra8 21.a5 Nc5 22.Nd4 Qg5 23.Kh1 Ne6 24.Nb3 Rd8 25.f4 (25.Rd1 Rd1 26.Qd1 Qf6-+) 25...ef3! 26.Rf3 (26.Bf3 Qe3 Combination; 26.Rf3 b6 Combination; 26.gf3 Qe3 Double attack (26...Qe3 Decoy)) 26...Qe7 27.e4 (27.c5 Nc5 28.Qa3 b6 29.Nc5 Ra5-+) 27...Ng5 28.Re3 Ne4 29.Kg1 f5 30.Bf3 Qg7 (better 30...Qg5 31.Qe1 Be6 32.Qc1-+) 31.Qe1 Re8 (31...Qf6 32.Be4 fe4 33.Re4-+) 32.Qh4 (32.Be4 Re4 33.Re4 fe4 34.Qe4 Bf5 35.Qh4 Qe5-+) 32...Be6 (32...Qe7!? 33.Qe1-+) 33.Be4 fe4 34.Re4 Bf5 35.Rd4 Qe5 36.Qf2 Qe1 (36...Bh3!? 37.a6 Bc8 38.ab7 Bb7 39.Rd7-+) 37.Qe1 Re1 38.Kf2 (38.Kh2 Re2 39.Rf4 Re3-+) 38...Rb1 39.Nc5 Ra5 40.g4 b6 (better 40...Ra3 41.Rd2 Bc8-+) 41.Nb7 (41.gf5 bc5 42.Rg4-+) 41...Ra3 42.Rd2 (42.Rd8 Kh7 43.gf5 Rb2 44.Ke1 Rh3 45.Rd7 Kh6-+) 42...Be4 43.Nd8 (43.Nc5 bc5 44.Re2 Bd3-+) 43...Rh1 44.Re2 Rh2 45.Ke1 Ra1 46.Kd2 Ra2 47.Ke3 Rhe2 48.Kd4 0-1. Czyz,An (1900) - Jakubowski,K (2480), 8th POL-HUN Rapid, 2020.

4.d4 c5 5.bc5 dc5 6.dc5 ( 6.de5!? Qb6 7.Qb3+/-) 6...Bc5=+ 7.Nf3? (7.e3 Ngf6=+) 7...Qc7 ( 7...Qb6 8.Qb3 Bf2 9.Kd1 f6-+) 8.e3=+ Ngf6 9.Qa4 0-0 10.Be2 Nb6 11.Qc2 Bb4 12.Nbd2 Re8 13.0-0 Bd7 14.Rfd1 Rac8 15.a3 Bd6 16.Rac1 Na4 17.Nf1 Nc5 18.Ng5? (18.Qd2 Nfe4 19.Qe1-+) 18...Ba4-+ 19.Qf5 Bd1 20.Rd1 e4?? ( 20...Rcd8-+) 21.Bf6= gf6 22.Qh7 Kf8 23.Qh6 Ke7 24.Nh7 Be5 25.Bg4?? Rcd8–/+ 26.Rd8 Rd8 27.f4 Bc3 28.Ng3 Re8?? 29.Nf5?? Kd8= 30.Nf6?? Bf6 31.Qf6+- Re7 32.Ne7 Qe7 33.Qd4 Kc7 34.h4 Nd3 35.Bf5 a6? 36.Be4 Qh4 37.Bd3 Qe1 38.Bf1 Kb8 39.Qe5 Ka7 40.Qc5 Ka8 41.Qf8 Ka7 42.Qf7 Qe3 43.Kh1 Qg3 44.Qh5 Qf4 45.Qf3 Qd4 46.g4 Qh8 47.Bh3 Qa1 48.Kh2 Qb2 49.Bg2 Qe5 50.Kh1 Qa1 51.Kh2 Qh8?? 52.Kg3+- Qe5 53.Kh4 Qh8 54.Kg5 Qg7 55.Kf4 Qf6 56.Ke3 Qc3 57.Kf2 Qd2 58.Kg3 Qd6 59.Kh3 Qh6= 60.Kg3 Qd6 61.Kf2 Qd2 62.Kg1 Qd4 63.Kh1 Qh8?? 64.Bh3 Qa1 65.Kh2 Qb2 66.Bg2 Qe5 67.Qg3 Qh8 68.Bh3 Qb2 69.Kh1 Qa1 70.Qg1 Qg1 71.Kg1 (71…Kb6 72.g5+-) 1–0. Meier,Bernd (1745) – Ros,Catalina (1875), Internet Section, 2003.

4.d4 c6 5.de5 de5 6.a3 Qc7 7.Nf3 Ngf6 8.e3 Be7 (8...a5 9.Qa4=+) 9.Nc3 (9.Nbd2 c5=) 9...0-0 (9...a5 10.b5=) 10.Be2 (10.Bd3 a5 11.Qb1 ab4 12.ab4 Ra6=) 10...Rd8 11.Qb3 Nf8 12.0-0 Ng6 13.Rad1 Be6 14.Ng5 Bf5 (14...Bd7 15.c5 Be8 16.Bc4+=) 15.c5 (better 15.e4 Bd7 16.c5+=) 15...h6? (better 15...Nh8+=) 16.Qf7+- Kh8 17.Ne6 Be6 18.Qe6 Re8 (18...a5 19.Bd3 Nf8 20.Qf7+-) 19.Qc4 (19.Qf7 Nh4+-) 19...Rad8 20.Qb3 Rd1 21.Rd1 Qc8 (21...Rd8 22.Qf7 Nf8 23.Rd8 Qd8 24.Na4+-) 22.Bc4 (22.Qa4 Qb8+-) 22...Qf5 23.Bf7 Ne4?? (better 23...Rd8+-) 24.Be8 (better 24.Ne4 Rf8 25.Bg6 Qg6 26.Ng3+-) 24...Qf2= 25.Kh1 Nh4 26.Rg1 Qg3?? (better 26...Qe3 27.Qf7 Nf2 28.Qf2 Qf2-+) 27.Ne4+- (27.hg3?! Nf2 28.Kh2 Ng4 29.Kh3 Nf2 30.Kh2 Ng4 31.Kh1 Nf2 32.Kh2=) 27...Qg4 28.Nf2 (better 28.Qf7 Qe4 29.Qe7+-) 28...Qh5 (28...Qf5 29.Qf7 Qf7 30.Bf7+-) 29.Nh3 (29.Bh5 Bc5 30.bc5 Kh7 31.Qd3 Kg8 32.Qd8 Kh7 33.Bf7 h5 34.Ng4 hg4 35.Qh4) 29...Qe8 30.Qc3 (30.Be5 Ng6 31.Bd4 Qg8 32.Qg8 Kg8+-) 30...Qf8 (30...Bf6 31.e4+-) 31.Qe5 Bf6 (31...Bf6 32.Rf1 Qf7 33.Rf6 gf6 34.Qf6 Qf6 35.Bf6 Kg8 36.Bh4 Kf7+-) 0-1. GM_HUSARZ (2110) - berlinn_bitoy (2205), Rated Bullet game, lichess.org, 2016.

4.d4 Qe7 5.Nc3 c6 6.a3 Ngf6 7.e4 Nb6 8.de5 de5 9.c5 Nbd7 10.Nf3 g6 11.Bc4 Bg7 12.0-0 0-0 13.Qd2 Nb8 14.Rfd1 Bg4 15.Qe3 Bf3 16.Qf3 Nbd7 17.Rd6 Ne8 18.Rd3 Nef6 19.Rad1 Rad8 20.Bc1 Nh5 21.Ne2 Kh8 22.Rd6 f5 23.Qh3 Rf6 24.ef5 Rd6 25.Rd6 Ndf6 26.g4 Rd6 27.cd6 Qd6 28.gh5 Nh5 29.fg6 Qd2 (29...Qg6 30.Ng3 Nf6 31.Qc8 Qe8 32.Qb7 h5+-) 1–0. mrkt – guest2749, ICC, 2003.

4.e3 Ndf6 5.Nf3 Ne7 6.d4 Ng6 7.Qb3 e4 8.Nfd2 Bf5 9.Nc3 c6 10.Be2 Be7 11.0-0 Qc7 12.a4 White prepares b5 12...a6 13.b5 0-0 14.Rfc1 Rfb8 15.Nf1 (15.Qc2 ab5 16.ab5 Ra1 17.Ba1 cb5 18.Nb5 Qd7+=) 15...ab5 16.ab5 Ra1 (16...Qd7!?=) 17.Ra1+/- Qb6 (better 17...Nh4!?+/-) 18.Ng3+- Be6 19.Qa4 (19.d5 Bd7+-) 19...h6 (better 19...d5!?+=) 20.Nge4+/- Ne4 21.Ne4 d5 22.Nd2 (22.c5 cb5 23.Bb5 Qd8+/-) 22...Bf6 (22...dc4 23.Bc4 Bc4 24.Nc4 Qb5 25.Qb5 cb5 26.Nb6+/-) 23.Ba3 (23.c5 Qd8+-) 23...Ne7 (23...dc4!? 24.Bc4 Bc4 25.Nc4 Qb5 26.Qb5 cb5+/-) 24.Bd6+- Rc8 25.c5 Qd8 26.bc6 bc6 27.h3 (27.Ba6 Ra8 28.Be7 Be7 29.Qc6 Bd7+-) 27...Nf5 28.Bh2 g5? (28...Qd7 29.Bd3+-) 29.Qa5 (better 29.Ba6!? Ra8 30.Qc6 Ne7+-) 29...Qd7 30.Qa7 Qe8 31.Qb7 Kg7 32.Ra7 Kg6 33.Nb3 (33.Nf3 Kh7+-) 33...Rd8 (33...Kg7 34.Qa6+-) 34.Na5 Rb8 (34...Ne7+-) 35.Qb8 Qb8 36.Bb8 h5 (36...Ne7 37.Rc7+-) 37.Nc6 g4 38.hg4 hg4 39.Bg4 (better 39.Bd3 Kg5+-) 39...Nh6 (39...Nd4 40.Nd4 Bg4+-) 40.Be6 fe6 41.Ne5 Be5 42.Be5 Nf5 43.c6 (43.c6 Ne7 44.Re7 Kg5 45.c7 Kf5 46.c8Q Kg5 47.Rg7 Kf5 48.Qc2) 1-0. jhonores (2215) - Jefe1 (2145), Rated Blitz game, lichess.org, 2020.

4.e3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be7 4.c4 Nd7).

4.Nf3 a5 =.

4.Nf3 c5 5.b5 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Nb6 9.e3 Qc7 10.Qc2 Be6 11.Bb2 Nf6 12.Be2 Be7 13.Ng5 h6? 14.Ne6+- fe6 15.Qg6 Kd7 16.0-0 d5 17.cd5 Nbd5 18.Qg7 Qd8 19.Be5 Rg8 20.Qh6 Bf8 21.Qh4 Be7 22.Qa4 Ne4 23.Qe4 Qf8 24.Nc3 Bf6 25.Nd5 ed5 26.Qd5 Kc8 27.Qe6 Kd8 28.Bf6 Kc7 29.Bf3 (29…Qf6 30.b6 Kd8 31.Qf6 Kd7 32.Qf7 Kd6 33.Bd5 c4 34.Bc4 Rg7 35.Qg7 Kc5 36.Rb1 Kc4 37.Qd4; 29.b6 Kb8 30.Be5 Qd6 31.Qg8) 1–0. revbodio1 – Pulsar, Live Game Caissa's Web, 2004.

4.Nf3 Be7 5.e3 Bf6 6.Be2 Ne7 7.d3 (7.d4 ed4 8.ed4 d5=) 7...b6?? (better is 7...e4 8.Nd4 ed3-+) 8.0-0 Bb7 9.Nbd2 0-0 10.Qc2 Re8 11.e4 Ng6 12.Rfe1 Nf4 13.Bf1 Nf8 14.g3 N4g6 15.Nb3 Bc8 16.Bg2 Ne6 17.Bc1 Ng5 18.Ng5 Bg5 19.Bg5 Qg5 20.Qd2 Qd2 21.Nd2 f5 (better is 21...c6=) 22.ef5+/- Bf5 23.Ba8 (23.Ba8 Ra8 24.Ne4+/-) 1–0. Fournier,Frederic – Citronvert (1800), Partie evaluee, 2007.

4.Nf3 Ngf6 5.g3 g6 6.Bg2 Bg7 7.0-0 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.g3 d6 6.Bg2 e5 7.0-0 Nbd7).

4.g3 g6 5.Bg2= Bg7 6.Qb3 Ne7 7.Nf3 0-0 8.0-0 Nc6 9.Nc3 Re8 10.d3 Nf6 11.e3 h6 12.Rac1 Be6 13.Nd2 Qd7 14.Nd5 Nd8 15.Nf6 Bf6 16.f4 Bg7 17.fe5 de5 18.Ne4 Bf5 19.Nc5 Qe7 20.Nb7 Nb7 21.Bb7 Rab8 22.Bc6 Red8 23.e4 Bh3 24.Rf2+= Qb4 25.Qb4 Rb4 26.Ba3 Rb6 27.Bd5 c6 28.Bf7+/- Kh7 29.c5 Rb7+= 30.Bc4 h5 31.Ra1 a5 32.Rb2+/- Rb2 33.Bb2 Rf8 34.Re1 Rf3 35.d4 ed4= 36.e5 d3–/+ 37.Bc3? Bh6-+ 38.e6?? d2 39.Bd2=+ Bd2 40.e7 Be3 41.Kh1 Bd7 42.Rd1 Be8 43.Rd8 Bc5 44.Re8 Re3 45.Ra8 Be7 46.Ra5 Rc3 47.Bf7 Kg7 48.Be8 Ra3 49.Ra3+/- Ba3 50.h4 c5= 51.Kg2 c4 52.Bb5 c3 53.Bd3 Kf6 54.Kh3 g5 55.hg5 Kg5 56.Bc2 Bd6 57.a4 Bc7 58.Bb3 Bd8 ½–½. Bernstein,Osip – Sherwin,James, USA–ch New York, 1959.

5.e3 Ngf6 6.b5 Be7 7.Nc3 0-0 8.Nf3 Nc5 (8...e4 9.Nd4 Ne5 10.f4 ef3 11.Nf3=+) 9.d4= ed4 10.Nd4 Nfe4 11.Ne4 Ne4 (11...fe4 12.Be2=+) 12.Be2 Bf6 13.0-0 Qe7 14.Rc1 g6 15.Qc2 Re8 16.Bf3 Ng5 (16...Be5!?+=) 17.Bd5+/- Kg7 18.a5 (18.c5 Ne4 19.cd6 cd6+/-) 18...Rb8 (18...a6 19.c5+/-) 19.a6! c6 (19...ba6 20.Nc6 Combination) 20.ab7 cd5 21.bc8Q Rec8 (better 21...Rbc8!? 22.Nc6 Qf8 23.cd5 Re7+-) 22.Nc6 Rc6 23.Bf6 Qf6 24.bc6 d4 25.ed4 (25.Qa4 Ra8 26.Qa6 Nf7+-) 25...Qd4 26.c5 Rc8? (26...d5 27.Rcd1 Qe5 28.Qa2+-) 27.cd6 (better 27.Rfd1!? Qf6 28.cd6 Nf7+-) 27...Qd6 28.Rfd1 Qe6 29.Qc3 (29.Rd7 Nf7+-) 29...Kh6 30.Qc5 (30.Rd7 a6+-) 30...Ne4 (30...Rc7 31.Qd4 Kh5 32.Re1+-) 31.Qa7 (better 31.Qe3!? Ng5 32.Qd2 Kh5+-) 31...Rc6 32.Qe3 Kg7 33.Rc6 Qc6 34.h4 Qe6?? (better 34...Kf6+-) 35.f3 Qc6 (35...Qe7 36.fe4 fe4 37.Rd5+-) 36.fe4 fe4 37.Qd4 (37.Qd4 Kh6 38.Ra1+-) 1-0. BeepBeepImAJeep (2630) - ediboss21 (2410), lichess.org, 2019.

5.e3 Ngf6 6.Nf3 Be7 7.Be2 0-0 8.Qb3 Kh8 9.Nc3 Ne4 10.Nd5 Ndf6 (better is 10...a5=) 11.Ne7+/- Qe7 12.d3 Ng4 (better is 12...Nf2!? 13.Kf2 Ng4 14.Kg1 Ne3+/-) 13.de4+- fe4 14.Nd2 Nf2 15.Rf1 (15.0-0 Bg4 16.Bg4 Ng4+/-) 15...Qh4+/- 16.g3 Qh2 17.Ne4 Bh3 18.Rf2 (18.Nf2?? Bf1 19.Qd3 Qg3-+) 18...Rf2 19.Nf2 Qg3 (better is 19...Qg1 20.Kd2 Qf2+/-) 20.Kd2?? (better is 20.Bf1 Bf1 21.Kf1+-) 20...Qf2= 21.Qd3 Bg2 22.c5 h5 (better is 22...Qh4 23.Qc4 Qc4 24.Bc4 Rf8=) 23.cd6+/- cd6 24.Qd6 Bf3 25.Rd1?? (better is 25.Re1 Be2 26.Re2+-) 25...h4 (25...Qe2 26.Kc1 Rc8 27.Kb1 Qc2 28.Ka2 Qa4 29.Kb1 Be4 30.Rd3-+) 26.Be5?? (better is 26.Re1 Be2 27.Re2+-) 26...h3 (better is 26...Qe2 27.Kc3 Rc8 (27...Qd1?? 28.Qh6 Kg8 29.Qg7) 28.Kb3 Qd1 29.Qd1 Bd1 30.Kb2 h3-+) 27.Qh6 1–0. Peruhin,Anatoliy (1605) – Terentiev,Alexander (1850), Ulyanovsk RUS, Volga Open, 2014.

5.d4 ed4 6.Qd4 Ngf6 7.Rd1 Bb7 8.Nf3 Be7 9.e3 0-0 10.Be2 a5 11.b5 Nc5 12.0-0 Re8 13.Qf4 Nfe4 14.Ne4 Be4 15.Bd4 Bf3 16.Bf3+/- Ne6 17.Qf5 Rb8 18.Bc6 Rf8 19.f4 g6 20.Qd5 Bf6 21.f5 Nd4 22.ed4 Bg7 23.fg6 hg6 24.Rde1 Bh6 25.a3 Qg5 26.Re2 Qd5 27.Bd5 Kg7 28.h4 Rbe8 29.Re8 Re8 30.Rf7 Kh8 31.Rc7 Be3 ½–½. Woschkat,Karl_Heinz – Koenig,Michael, DESC, 1999.

5.Nf3 Bb7 6.e4 Ngf6 7.d3 Be7 8.Be2 c5 9.bc5 bc5 10.0-0 0-0 11.Ng5 h6 12.Nh3 Bc8 13.f4 Nb6 14.f5 Rb8= 15.Rb1 Qc7 16.Bc1 Nfd7 17.Be3 Bf6 18.Nb5+/- Qc6 19.Na7 Qa4 20.Qa4+- Na4 21.Rb8 Nb8 22.Rb1 Nd7 23.Nb5 Be7 24.g4 f6 25.Nf2 Ba6 26.Bd1 Bb5 27.cb5 Nc3 28.Rb2 Nd1 29.Nd1 Nb6 30.Nc3 Bd8 31.a4 c4 32.a5 Nd7 33.b6 cd3 34.Rd2 Nc5 35.Bc5 dc5 36.Rd3 c4 37.Rd5 1–0. Wall,Bill – Teacher, internet, 2002.

5.a4 Nb6 6.e3 (6.e4 a5 7.ba5 Ra5=+) 6...Be6 7.d3 c5 (better 7...a5!? 8.ba5 Ra5=+) 8.bc5+= dc5 9.Nge2 (9.Nf3 Nbd7+=) 9...a6 (9...Be7 10.a5 Nc8 11.Ng1+=) 10.Ng3 Be7 11.Be2 Qd7 (11...0-0!?+-) 12.a5+- Nc8 13.0-0 0-0 14.Qc2 (14.e4 Na7+-) 14...Na7 15.Na4 Nc8? (better 15...Qc7+-) 16.Be5+- Qc6 (16...Ng4 17.Bc3+-) 17.Bf3 Qd7 (17...Qe8 18.Bb7 Ra7 19.Bf3+-) 18.Rfd1 (18.Rab1 Ra7 19.Bb8 Ra8 20.Rb7 Rb8 21.Rb8 Qc7+-) 18...Ra7 (18...Bg4 19.Bg4 Ng4 20.Bc3+-) 19.d4 Nd5 (19...Bg4 20.Nc5 Qe8+-) 20.cd5 Bd5 (20...Bg4 21.Bg4 Qg4 22.Nf5+-) 21.dc5 Qb5 22.Bd5 Qa5 23.Nf5 Bf6 24.Bf6 gf6 25.Qb2 Qc7 26.Qf6 h5 (26...Qh2 27.Kh2 Nd6 28.Qg7) 27.Qg7 1–0. Wick,Dieter – Pfaff,Helmut, 17th RLP–Senioren–Open, 2019.

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Nbd7 5.Nc3).

5.e3 Be7 6.Nf3 0-0 7.Be2 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Nbd7 7.Nc3).

5.e3 Be7 6.Nf3 0-0 7.Be2 b6 8.0-0 Bb7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 8.Nc3 Nbd7).

5.g3 Be7 6.Bg2 c6 7.Nf3 0-0 8.0-0= Re8 9.d3 Bf8 10.Nd2 Nb6 11.a4 Qc7 12.b5 Rb8 13.Nce4 Nbd7 14.Nf6 Nf6 15.Ne4 Ne4 16.Be4 c5 17.Bg2 b6 18.a5 g6 19.ab6+/- ab6 20.Ra4 Bg7 21.Qc2 Bb7+= 22.Bb7 Rb7 23.Rfa1 h5 24.Ra8 Rf8 25.Qa4 Ra8+= ½–½. algernon (2295) – lliu (2360), net–chess.com, 2005.

5.e3 Bg7 6.Nf3 Nh6 7.d4 0-0 8.Be2 f5 9.0-0+= e4 10.Nd2 Nf6 11.b5 Be6 12.a4 g5 13.a5+/- Bf7 14.a6 b6 15.Rc1 Bg6 16.c5 f4 17.cd6 cd6 18.Ba3 Re8 19.Nc4 Bf8 20.Qb3+/- Kh8 21.Rfd1 Qd7 22.Ne5 de5 23.de5 Qf5 24.Bf8 Rf8 25.ef6 Ng4? 26.Ne4!+- Ne5 27.Nd6 Qf6 28.ef4 Qf4 29.Qe3 Qf6 30.Rd5 Nd7 31.Bf3 Rad8 32.Qg5 Qb2 33.Re1 Nf6 34.Qd2 Qd2 35.Rd2 Rd7 36.Bc6 Rg7 37.g3 h5 38.Rd4 Kh7 39.Re6 Ng4 40.f3 Rf6 41.Rf6 Nf6 42.Kf2 Re7 43.Ne4 Be4 44.Be4 Kg7 45.h3 Re5 46.Bc6 Rc5 47.g4 Kg6 48.h4 Rc2 49.Kg3 hg4 50.fg4 Rc3 51.Kf4 Rh3 52.h5 Kf7 53.Kg5 Nh7 54.Kf5 Nf6 55.Rd6 (55.Rd6 Ng8 56.Bd5 Ke7 57.Rg6+-) 1–0. Melich,Jindrich (2160) – Taborsky,Rostislav (2205), Klatovy op–A, 1999.

5.g3 Bg7 6.Bg2 Ngf6 7.e3 (7.Nf3 a5 8.a3 0-0=) 7...0-0 8.Nge2 c6 9.0-0 Nb6 10.d3 Be6 11.a4 Rc8 (11...a5 12.b5 Qc7 13.Rb1=) 12.b5 (12.a5 Nbd7+=) 12...d5 (12...Nbd7!?=) 13.a5+/- Nbd7 14.a6 ba6 (14...Qb6 15.ab7 Qb7 16.bc6 Qc6 17.Ba3+/-) 15.bc6+/- Rc6?? (better 15...Nb8 16.d4 ed4 17.Nd4 Nc6 18.Ne6 fe6 19.Ra6 Rf7+/-) 16.cd5+- (16.cd5 Nd5 17.Nd5+-) 1-0. Lance5500 (2655) - QueenOfB (1955), lichess.org, 2021.

5.Nd2 Be7 6.g3 0-0 7.Bg2 c6 8.Ngf3 Re8 9.0-0= Nf8 10.Re1 Ng6 11.Bh1 Bd7 12.Qc2 a5 13.ba5 Ra5 14.e4 Bf8 (14...c5 15.Reb1=+) 15.d4= Ra8 16.de5 de5 17.Ne5?? (better 17.Nb3=+) 17...Bd6?? (better 17...Ne5 18.Nf3 Nf3 19.Bf3 Bc5-+) 18.Nd7 (18.Ng6!? fg6 19.c5+/-) 18...Nd7 19.Bc3 Qc7 20.c5 (20.Rad1 Be5 21.Be5 Qe5+/-) 20...Be5 (20...Nc5!? 21.Nc4 Na4=) 21.Kf1 (better 21.f4!? Bc3 22.Qc3+/-) 21…Kh8 1-0. opperwezen (2635) - samuelhaupt3 (2120), lichess.org, 2016.

5.e3 Be7 6.Nd2 0-0 7.Ngf3 c6 8.a3 Re8 9.Be2 Bf8 10.0-0 Ng4 11.h3 Ngf6 12.Qc2 Be7 13.Rfe1 Nf8 14.Rad1 Ne6 (14...a5 15.d4+=) 15.Bf1 (15.d4 ed4 16.Nd4 a5+=) 15...Bf8 (15...a5 16.d4 e4 17.Ne4 Ne4 18.Qe4 ab4 19.ab4+=) 16.g3 (16.d4 ed4 17.Nd4 g6+/-) 16...h6 17.Bg2 Ng5 18.Ng5 hg5 19.Ne4 (19.d4 g4 20.de5 de5+=) 19...g4 20.hg4 Bg4 21.Bh1 (21.f3 Ne4 22.de4 Bc8=) 21...Bh5 (21...Ne4 22.Be4 d5 23.Bg2 Bd1 24.Rd1-/+) 22.Ng5 (better 22.Rd2=) 22...Bf3?? (better 22...Bd1 23.Rd1 d5-+) 23.Nf3 0-1. opperwezen (2615) - xuanet (2865), lichess.org, 2016.

5.de5 de5 6.Nf3 Bb4 7.Nc3 0-0 8.e3 e4 9.Nd4 Ne5 10.Be2 Qe7 11.0-0 Rd8 12.Qc2 c5 13.Nb3 Nd3 14.Rfd1 Nb2 15.Qb2 Be6 16.a3 Bc3 17.Qc3 b6 18.f3 ef3-+ 19.Bf3 Rd1 20.Rd1–/+ Rd8 21.Nd2 Bf5-+ 22.Re1 Rd3 23.Qb2 Re3 24.Kf2 Re1 (24...Re1 25.Qc3 Ng4 26.Bg4 Bg4-+) 0–1. gtate (1900) – sergeivanoff (2000), net–chess.com, 2004.

5.de5 Ne5 6.c5 Nc4 7.Bc3 Be7 8.e3 0-0?? ( 8...Be6=) 9.Bc4+- Ne4 10.Bb2 (10.Qd3!? Nc3 11.Nc3 dc5 12.Qd8 Rd8+-) 10...Bf6 11.Bf6 ( 11.Bd4!?+-) 11...Qf6+/- 12.Qd4?? ( 12.Qf3 Qa1 13.Qe4+/-) 12...Qh4 ( 12...Qf2 13.Kd1 Qg2-+) 13.g3+- Qg4 (13...dc5 14.bc5 (14.gh4?! cd4 15.ed4 Re8+-) 14...Qe7 15.Nc3 Nc5 16.Nd5+-) 14.h3 ( 14.f3 Qg6 15.Bd3 dc5 16.bc5+-) 14...Qf5 15.Bd3?? ( 15.f3 Ng3 16.Rh2+-) 15...Qf2-+ 16.Kd1 Qd2 17.Nd2+- Nf2 18.Ke2 Nh1 19.Ne4 Bh3 20.Ng5 Bg4 21.Qg4 h6 22.Qh5 Ng3–/+ 23.Kf3 Nh5 24.Nh7? Rfe8 25.Nh3 g6 26.Rg1?? Kh7-+ 27.cd6 cd6 28.Bg6 fg6 29.Nf4 Nf4 30.ef4 Rf8 31.Rg4 g5 32.f5 Rf5 (33.Kg3 Re8-+) 0–1. Pawn – abc1, Live Game Caissa's Web, 2004.

5.a3 ab4 6.ab4 Ra1 7.Ba1 Be7 8.d4 Ngf6 9.Nf3 c6 (9...e4 10.Nfd2=) 10.de5= de5 11.Qb3 (11.c5 Qc7=) 11...Qc7 (11...Qb6 12.b5 e4 13.Nfd2=+) 12.Be2 0-0 13.0-0 (13.Nbd2 b6=) 13...h6 (13...c5 14.b5=) 14.Rd1 Re8 (14...e4 15.Nfd2=) 15.Bc3 (15.c5 e4 16.Nfd2 Ne5+=) 15...Ne4 16.Bb2 Bf6 17.Bd3 (17.c5 b6+=) 17...Ng5 (17...Nf2!? 18.Kf2 e4 19.Be4 Re4=) 18.Ng5+= hg5 (18...Bg5 19.Nd2+=) 19.Nd2+/- Nf8 20.Nf3?? (20.Ne4 Be7+/-) 20...Ng6?? (better 20...e4 21.Bf6 gf6-/+) 21.Bc2 (21.Bg6 fg6 22.c5 Qf7 23.Qf7 Kf7+/-) 21...e4 (21...Nh4 22.Nd2+=) 22.Nd4 (22.Bf6 gf6 23.Nd4 f5+/-) 22...Be5 23.g3 f5 24.c5 Kh7 25.Ne2 (25.Qc4 g4+=) 25...Be6= 26.Qa3 Bb2 27.Qb2 Ne5 28.Kg2 Nf3 29.Qb1 g4 30.Nf4 Qf7 31.h4 gh3 32.Nh3 (32.Nh3 Kg8 Combination; 32.Kh3 Ba2 Combination) 32...Qh5?? (better 32...Kg8=) 33.Rh1+- Kg8 34.Nf4 Qf7 35.Qc1?? (better 35.Ne6 Re6 36.Bb3+-) 35...Bc4 36.Qb2 g5?? (36...Rd8 37.Bd1=) 37.Nh5 (37.Qh8) 37...Be6?? (better 37...Re6!? 38.Nf4 Qf6=) 38.Qc3 (better 38.Nf6 Kf8 39.Rh8 Ke7 40.Re8 Qe8 41.Ne8 Ke8 42.Qf6+-) 38...Rf8+/- 39.Re1?? (better 39.Nf4!? Ne1 40.Kf1+/-) 39...Qg6 (better 39...Ne1 40.Qe1 Qh5-+) 40.Rh1= g4?? (better 40...Kf7=) 41.Nf4+- Qg7?? (41...Qf6 42.Qf6 Rf6 43.Ne6 Re6+-) 42.Qd4 (better 42.Qg7 Kg7 43.Ne6 Kg8 44.Nf8 Kf8 45.Ba4+-) 42...Qd4 (better 42...Nd4 43.ed4 Bf7-+) 43.ed4-/+ Nd4 (better 43...Bf7!?-/+) 44.Be4?? (better 44.Ne6 Ne6 45.Bb3=) 44…Nf3 (44...Nf3 45.Ne6 Rf6+-). ClayPigeons (2165) - Onur4848 (2155), Rated Bullet game, lichess.org, 2021.

5.a3 b6 6.Nc3 Ngf6 7.Nf3 Bb7 8.d4 ed4 9.Nd4 c5 10.Nc2 ab4 11.ab4 Be7 12.Be2 0-0 13.0-0 Ne5 14.Qd2 Ne4 15.Ne4 Be4 16.b5 Qc7 17.f3 Bb7 18.e4 f5 19.f4 Ng6 20.ef5+/- Nh4 21.Ne3 Nf5 22.Nd5 Qd8 23.Bf3 Kh8 24.Ne7 Qe7+= 25.Qe1 Qf7 26.Bb7+= Qb7 27.Ra8 Qa8 28.Qe6 Qc8 29.Qe4 Rg8 30.h3?? Qd7?? 31.Kh2 Qf7 32.g4 Nh6 33.Kg3 Rf8 34.f5 Ng8 35.Re1 Qd7 36.Qe6 Qc7 37.g5 d5+= 38.Be5 Qf7 39.Qf7 Rf7 40.cd5 Rf5 41.d6 Rf7 42.Rd1 Rd7 43.h4 h6 44.Ra1 Rf7 45.Kg4 Rd7? 46.Kf5 1–0. Chirpii,Alexandru (1650) – Panait,Mihai Catalin (2240), Centrocoop June op–B, 1998.

5.a3 Be7 6.Nc3 c6 7.Qb3 ab4 8.ab4 Ra1 9.Ba1 Ngf6 10.d3 d5 11.Nf3 Qb6 12.Na2 Bd6 13.Nd2 Qd8 14.Be2 0-0 15.0-0 Re8 16.Nc3 dc4 17.Nc4 Bf8 18.Rd1 Nd5 19.Nd5 cd5 20.Nd2 Nb6 21.Nf3 f6 22.Bb2 Be6 23.Nd2 Qe7 24.b5=+ Ra8 25.Ra1 d4 26.Nc4 Ra1–/+ 27.Ba1 Nc4 28.dc4=+ de3 29.Qe3 Qb4 30.Qc1 Bc5 31.Bc3 Qb3 32.Bd2 b6 33.h3 Kf7 34.Qc3 Qb1 35.Qc1 Qb3 36.Be3 Be3 37.fe3 Qb4 38.Kf2 Qc5 39.Qd2 Bc4 40.Qd7 Kf8 41.Qd8 Kf7 42.Bc4 Qc4 43.Qb6 f5 44.Qb8 Qc5 45.b6+/- Qc2 46.Kg3+- Qe4?? 47.Qa7 Kg6 48.b7 f4 49.Kh2 fe3 50.Qa6 Kf5 51.Qf1 (51.Qf1 Qf4 52.Kg1+-) 1–0. Kool,Gerard – Scheske,Andreas, OSW, 2000.

5.a3 g6 6.Nf3 Bg7 7.Be2 f5 (7...Ngf6 8.d4 e4 9.Nfd2 ab4 10.ab4 Ra1 11.Ba1 0-0 12.Nc3 Qe7+=; 7...ab4 8.ab4 Ra1 9.Ba1 Nh6 10.0-0 0-0 11.d4 Re8 12.Qc2 Nf5+=) 8.d4 (8.0-0 Ne7 9.d4 0-0 10.Nc3 e4 11.Nd2 ab4 12.ab4 Ra1+=) 8...e4 9.Nfd2 Ngf6 10.Nc3 (10.0-0 ab4 11.ab4 Ra1 12.Ba1 0-0+=) 10...Nb6 (10...0-0 11.Qb3 ab4 12.ab4 Ra1+=) 11.d5 (11.0-0 0-0 12.Qc2 Qe7+=) 11...0-0 12.0-0 Nbd7 (12...Bd7=) 13.Nb3 g5 (13...ab4!? 14.ab4 Ra1 15.Qa1 Ne5+=) 14.Na5+/- Ne5 15.Nb3 g4 16.Nd4 Qe7 17.Re1 Qf7 18.Qc2 Kh8 19.Rad1 Rg8 20.c5 Qh5 21.g3 (21.Ncb5!? Nd5 22.Qb3 dc5 23.Qd5+-) 21...Nf3 22.Nf3 gf3 23.Bf1 Ng4 24.h3 Ne5 25.Nb5 f4? (better is 25...Bd7 26.Nc7 Ba4+/-) 26.Be5 Be5 27.ef4 Bh3 28.Qc4?? Rg3!! 29.fg3 f2! 30.Kf2 Qf3 31.Kg1 Qg3 32.Kh1 Qf3 (32...Qf3 33.Kh2 Qf4 34.Kh3 Qg3) 0–1. Abreu Suarez,I (2065) – Perez Felipe,M (2305), ch–ESP El Sauzal ESP, 2010.

5.b5 Ne7 6.Nf3 Ng6 7.d4 Be7 8.Bd3 0-0 9.Bg6+= fg6 10.de5 de5 11.Qd5 Kh8 12.Ne5 Bb4 13.Bc3 Bc3 14.Nc3+/- Qf6 15.f4 Nb6 16.Qe4 c6 17.bc6+- bc6 18.Qd4 c5 19.Qc5+- Bb7 20.Nd5 Nd5 21.cd5 Rac8 22.Qa5 Qh4 23.g3 Qh5 24.0-0 Rc2 25.Nf3 Bd5+/- 26.e4 Qh3= 27.Rf2 Be4? 28.Ng5+= Qf5? 29.Qf5+- Bf5 30.Rc2 Bc2 31.a4 h6 32.Ne6 Rb8 33.a5 Be4 34.a6 (34…Rb6 35.Nc5+-) 1–0. Fournier,Frederic – Nilsson,Nils Roland, corr 3GMM–05, 1995.

5.Nc3 c6 (5...a5 6.b5=) 6.Nf3 h6 (6...Ngf6 7.Be2=) 7.d4+= Be7 (7...ed4 8.Nd4 Ne5 9.Be2+=) 8.Be2 (8.Bd3 Ngf6+=) 8...Ngf6 9.0-0 0-0 10.Qc2 Qc7 (10...b6 11.Rad1 Qc7 12.e4+=) 11.h3 (better 11.Rfd1+=) 11...d5? (better 11...Re8+=) 12.de5+- Ne5 (12...Ne4 13.cd5 cd5 14.Rac1 Nc3 15.Bc3+-) 13.Ne5 Qe5 14.Nd5 Qd6 15.Nb6 Rb8 16.c5 Qc7 (16...Qe6 17.Rad1+-) 17.f4 Be6? (17...Nd7+-) 18.Rad1 Rbd8 (18...Nd5 19.Be5 Qd8 20.Nd5 cd5+-) 19.Be5 Bd6 (19...Rd1 20.Rd1 (20.Qd1?! Qd8+-; 20.Bd1?! Qd8+-) 20...Qd8 21.Rd8 Rd8 22.f5+-) 20.Bd6 (20.cd6?! Qb6 21.Bf6 gf6+-) 20...Rd6 21.Rd6 Nd5 (21...Bd5 22.Nd5 Nd5 23.Qd2+-) 22.Nd5 cd5 (22...Bd5 23.e4 Be6 24.f5+-) 23.f5 Bc8 (23...Bd7 24.Rd5 Bc6 25.Rd6+-) 24.Qd2 (24.Rd5 Re8+-) 24...f6 (24...Re8 25.Rd5 Qe7 26.Bd1+-) 25.Qd5 Kh8 (25...Kh7 26.Bh5 Qe7 27.e4+-) 26.Rd1 Qe7 27.Rd8 Kh7 28.Bh5 Qe3 29.Kh1 Qe7 30.Rf8 Qf8 31.Re1 (31.Re1 Bd7 32.Qd7 Qa8 33.Bg6 Kg8 34.Re8 Qe8 35.Qe8) 1–0. michaelbuss (2795) – greenleaf9 (1895), ChessWorld.net, 2012.

5.Nf3 Ngf6 6.Nc3 c6 7.d4 e4 8.Nd2 d5 9.c5 b6 10.f3 ef3 11.Qf3 b5 (11...Nb8!?=) 12.e4+= Qe7 13.Be2 de4 14.Nde4 Ne4 15.Ne4 Qe6 16.d5 Qd5 17.Rd1 Qa2 18.0-0 Qb2 19.Qf7 Kd8 20.Bg4 Ra7 21.Ng5 Bc5 22.bc5 Kc7 23.Rd7 Bd7 24.Qd7 Kb8 25.Qd6 Rc7 26.Ne6 Rhc8 27.Nc7 Rc7 (27...Qe2 28.Nd5 Ka8 29.Nb6 Ka7 30.Rf7 Qe7 31.Re7 Rc7 32.Qc7#) 28.Qd8 Kb7 29.Bc8! (29.Bc8 Rc8 30.Rf7 Kb8 31.Qb6 Ka8 32.Ra7#) 1–0. Rooijen Van,Peter (1645) – Martin,Helmut, SD–2011–0-00123, 2011.

5.Nc3 Bb7 6.d4 Qe7 7.Nd5 Bd5 8.cd5+/- Ngf6 9.Bb5 a6 10.Bc6 Rb8 11.Rc1 g6 12.Qa4 Bg7 13.de5 de5 14.Bd7 Nd7 15.Rc7 b5 16.Qa5 0-0 17.a3 Qd6 18.e4 Rfc8 19.Ra7? Rc2–/+ 20.Ra6 Qe7 21.Nf3 Rb2 22.0-0 Rc2 23.Rc6 Rc6 24.dc6 Nf8 25.Rd1 Ne6 26.Rd5 Qc7 27.Qc7 Nc7 28.Rd7 Ne6 29.Rb7 Rc8 30.Rb5 Rc6 31.Rb8 Bf8 32.g3 f6 33.a4 Nd4 34.Nd4–/+ ed4 35.b5 Rc4 36.b6?? Ra4-+ 37.b7 Rb4 38.Kg2 Kg7 39.f4 Rb2 40.Kf3 d3 41.e5 d2 42.Ke2 fe5 43.fe5 Kf7 44.e6 Ke7 45.h4 Bg7 46.Rg8 Be5 47.g4 Rb7 48.Kd2 Ke6 49.Re8 Re7 50.Re7 Ke7 51.Ke3 Bf6 52.g5 Be5 53.Kf3 Ke6 54.Kg4 Bd6 55.h5 Be5 56.Kh3 Kf5 57.hg6 hg6 58.Kg2 Kg5 59.Kf3 Bf4 (59...Bf4 60.Ke2 Kh4-+) 0–1. marus2 – UQK, internet, 2001.

5.c5 bc5–/+ 6.bc5 Nc5 7.d4 Ne4 (7...Rb8 8.Qc2 ed4 9.Bd4=+) 8.d5 (better 8.de5 f5 9.ef6 Ngf6 10.Nd2=) 8...Bb7?? (better 8...Rb8!? 9.Ba3 c5 10.Qa4 Bd7 11.Qe4 Qa5 12.Nd2 Qa3–/+) 9.Bb5?? (better 9.Qa4 c6 10.Qe4+-) 9...Ke7=+ 10.Qg4? (better 10.f3!? Nc5 11.Nc3=) 10...Nef6 (10...Bd5 11.Nc3 Nc3 12.Bc3-+) 11.Qg5 c6 (better 11...h6 12.Qg3 Bd5-+) 12.dc6= Bc6 (12...Qa5!? 13.Nc3 Bc6 14.Bc6 Rc8=) 13.Bc6+= Rb8 (13...Qb6!? 14.Ba3 Qc6 15.Qe5 Kd8 16.Qa5 Qc7 17.Qc7 Kc7+=) 14.Ba3 The mate threat is Qxe5 14...Qa5 15.Nd2?? (better 15.Kd1 Qa6 16.Be4+-) 15...Qa3=+ 16.Bd5? (16.Ne2=+) 16...Qb2?? (better 16...h6 17.Qh4 Rb4-+) 17.Rb1= Qa2?? (better 17...Qb1 18.Nb1 Rb1 19.Kd2 Ke8 20.Bc6 Kd8=) 18.Ba2+- (18.Rb8?! Qd5 19.Ngf3 h6+-) 18...Rb1 19.Nb1 h6 (19...a6 20.Qh4+-) 20.Qh4 g5 (20...e4 21.Nc3 g5 22.Qh3+-) 21.Qc4 Bg7 (21...Kd8+-) 22.Qf7 (22.Qf7 Kd8 23.Qg7+-) 1–0. MARYMARY – Garry the Crow, ChessWorld.net, 2017.

5.d4 e4 6.d5 Nh6 7.Nd2+= Bb7 8.Ne4+- f5 9.Ng3 c5 10.a3 g6?? 11.Bh8 a5 12.Be2 b5 13.cb5 ab4 14.ab4 Rc8 15.Nf3 Nb6 16.0-0 cb4 17.Ra7 Bd5 18.Qd4 Rc7 19.Qb6 Ra7 20.Qa7 Bf3 21.Bf3 (21.Bf3 d5 22.Qh7+-) 1–0. mr – danelson (1850), net–chess.com, 2008.

6.Nc3 Ngf6 7.g3 Be7 8.Bg2 0-0 9.0-0 h6 10.d4 ed4 11.ed4 c5 12.dc5 dc5= 13.b5 Qc7 14.Re1 Rfe8 15.Qc2 Bd6 16.Rad1+= Re1 17.Re1 Re8 18.Re8 Ne8 19.Ne4 Be4 20.Qe4+/- Nef6 21.Qe2 Qb8 22.Nh4 Be5+= 23.Bc1 Qd6 24.Nf5 Qe6 25.Bh3 Qe8 26.Bd2 Kf8 27.Qd3 Bc7 28.Ne3 Ne5 29.Qe2 Qd8 30.Bg2 Qd4 31.h3 Ne4 32.Be1 Nf6 33.Kf1 Qd3 34.f4+/- Qe2 35.Ke2 Ned7 36.Nd5 Nd5 37.Bd5 Nf6 38.Bf3 Ke7 39.Bd2 Nh7 40.Be4 Nf6 41.Bc6 Ne8 42.Kf3 Nd6 43.Bd5 Ne8 44.g4 Nf6 45.Bb7 Bb8 46.Bc3 g6 47.a4 Bc7 48.Bc6 Ne8 49.Be8 Ke8 50.Ke4 Ke7 51.Be5 Be5 52.Ke5 f6 53.Kd5 Kd7 54.h4 g5? 55.fg5 hg5 56.hg5 fg5 57.Ke5 Ke7 58.Kf5 Kd6 59.Kf6 (59.Kf6 Kd7 60.Kg5+-) 1–0. Liepert,Luise – Graf,Jutta, 4 Laender–Cup (Women), 1990.

6.d4 e4 7.Nfd2 Ndf6 8.Nc3 c6 9.Nde4 Ne4+= 10.Ne4 d5 11.cd5 Qd5 12.Qc2 Bb4 13.Bc3 Bc3 14.Nc3 Qa5 15.Bc4 Nf6 16.0-0 0-0 17.f4 b5 18.Bb3 Qc7 19.Rac1 c5 20.Nb5+/- Qc6 21.a4 Qg2?? 22.Qg2+- (22.Qg2 Bg2 23.Kg2 cd4 24.ed4+-) 1–0. Wall,Bill – Revpad, internet, 2003.

6.d4 e4 7.Nfd2 Ngf6 8.Nc3 d5 9.b5 Bb4 10.Qc2 0-0 11.cd5 Bc3 12.Bc3 Bd5 13.Bb4 Re8 14.Rc1 Rc8 15.Nc4 a5 16.ba6 Ra8 17.Nd2 Ra7 18.a3 g6 19.Be2 Re6 20.0-0 h5 21.Rb1 Rc6 22.Bc3 Qe7 23.Rfc1 Qa3 24.Bb5+- Rc3 25.Qc3 Qc3 26.Rc3 Kf8 27.f3 Ke7 28.Kf2 Kd6 29.Rbc1 c5 30.Rd1 ef3 31.gf3 Nh7?? 32.dc5 bc5 33.Ne4 Ke6 34.Bd7 Rd7 35.Nc5 (35…Ke7 36.Nd7+-) 1–0. mrkt – Bouncy, ChessWorld.net, 2004.

6.d4 Qe7 7.Be2 g6 (7...ed4 8.Bd4 (worse 8.ed4 Bf3 9.gf3 d5=+) 8...c5 9.Bc3+=) 8.0-0+/- Bg7 9.Nc3 Ngf6 10.Re1 0-0 11.a4 (11.d5 a5 12.b5 Nc5+=) 11...a5 (11...c5 12.bc5 dc5 13.a5=) 12.b5+= h6 13.Rc1 Rfe8 14.h3 g5 15.Ba3 e4 16.Nd2 Nf8 17.c5 (17.f3 ef3 18.Bf3 Bf3 19.Qf3 Rac8+/-) 17...dc5 18.dc5 bc5 19.Nc4 Rad8 20.Qc2 h5 Black prepares the advance g4 (better 20...Ra8!?+=) 21.Na5+- Ba8 22.Na2 (22.Nb1 N8d7+-) 22...Ne6 23.Nb3 g4 24.Nc5 Nc5 (24...gh3!? 25.gh3 Nd7+/-) 25.Bc5+- Qe5 (25...Qe6 26.hg4 Bd5 27.Nb4 hg4 28.Nd5 Nd5 29.Bc4+-) 26.h4 (26.Bd4!? Qe6 27.hg4 hg4 28.Qc7 Nd5+-) 26...g3+/- 27.fg3 (27.Rf1!?+/-) 27...Qg3+= 28.Rf1 Qh4 29.Rf4 Ng4 30.Bg4 hg4 31.Qf2 (31.Qe2 f5 32.Nb4 Be5 33.Qa2 Kg7 34.Rf5 Qh2 35.Kf1 Rd7=) 31...Qh5 (31...Qf2 32.Rf2 (32.Kf2? Rd2 33.Kg1 Ra2-+) 32...g3 33.Rf4=) 32.Rf5 (32.Bd4 Bd4 33.ed4 Re7+/-) 32...Qg6= 33.Rf1 (better 33.Qf4!? Bh6 34.Qf1=) 33...Bd5-/+ 34.Nb4 Be6 35.Rf4 g3 36.Qe2 (36.Qe1 Rd1!! 37.Qg3 Rf1 38.Kh2 Rh1 39.Kh1 Qg3 40.Nc6-+) 36...Qh6 37.Qh5 (37.Rh4 Qh4 38.Qh5 Qh5 39.Re1 Qh2 40.Kf1 Qh1 41.Ke2 Qg2) 37...Qh5 38.Rc1 Rd2 39.Kf1 (39.Nc6 Qh2 40.Kf1 Qh1) 39…Qe2 (39...Qe2 40.Kg1 Qg2; 39...Qh1) 0-1. jhonores (2215) - yopi_benper (2190), Rated Blitz game, lichess.org, 2020.

6.Be2 Be7 7.0-0 Ngf6 8.d3 0-0 9.Nbd2 c5 10.b5 a6 11.a4 a5 12.Qc2 h6 13.h3 Qc7 14.Rac1 Rac8 15.Nh2 Rfe8 16.Qd1 Nf8 17.Ng4 Ba8 18.Nf6 Bf6 19.Bg4 Qb7 (19...Nd7!?+=) 20.Ne4+/- Ne6 21.Nf6 gf6 22.Bf3 Qd7 23.Ba8 Ra8 24.Qg4 Kh7 25.Qf5 Kg7 26.Bc3 Nf8 27.Qg4 (27.Qf3!?+/-) 27...Qg4+= 28.hg4 Kh7 29.e4 Ne6 30.Bd2 Nd4 31.Rce1 Rg8 32.f3 Nc2 33.Re2 Nd4 34.Ref2 Nb3 35.Be3 Rg7 36.g3 Rag8 37.Rh2 Rg6 38.Kg2 Kg7 39.Rfh1 Rh8 40.Rh4 Nd4 41.f4 Nc2 42.Bd2 ef4 43.gf4 h5 44.g5 (44.Bc3!?+/-) 44...fg5+= 45.fg5 f6 46.Rh5 Rh5 47.Rh5 fg5 48.Rg5 (48.Bc3!? Nd4 49.Kg3+-) 48...Rg5 49.Bg5 Ne1 50.Kf1 Nd3 51.Bd8 Nb2 52.Bb6 Nc4 53.Bc7 Kf7 54.Ke2 (54.b6!? Nb6 55.Bb6 Ke6+-) 54...Ke7 (better is 54...Ke6!? 55.Kd3 Nb2 56.Kc3 Nd1 (56...Na4?? 57.Kb3+-) 57.Kc4 Nf2+-) 55.Kd3+- Kd7? (better is 55...Ne5 56.Kc3 Ng4+-) 56.Kc4 Kc7 57.Kd5 Kb6 58.Kc4 Kc7 59.Kd5 Kb6 ½–½. Genne,Rene (1770) – Labrande,Theodore, Saint Denis REU, Reunion Open, 2013.

6.Be2 Ngf6 7.0-0 Be7 8.d4 e4 9.Nfd2 d5 10.b5 c5 11.Nc3 cd4 12.ed4 Bb4 13.Qb3 Bc3 14.Bc3 0-0 15.Rfc1 Re8 16.Nf1 Nf8 17.Ne3 Ng6 18.g3 h5 19.h4 Qd7 20.cd5 Nd5 21.Bh5+= Kh7 22.Bg4 Qd8 23.h5 Nge7 24.Bd2 Ne3 25.Be3 Bd5 26.Qb2 f5 27.Bh3 Bf7 28.Qe2 Be6 29.Rc2 Nd5 30.Bd2 Bd7 31.Rd1 f4 32.Bd7+/- f3?? 33.Qf1 Qd7+= 34.Kh2 Rh8 35.Qh3+/- Qh3 36.Kh3 Kg8 37.g4+- Re8 38.Kg3 Kf7 39.Rc6 Re6 40.Rdc1 Rc6 41.Rc6 Rf8 42.Rd6 e3 43.Be1 Nf6 44.Bc3?? Ne4-+ 45.Kf3 Nd6 46.Ke3 Nb5 47.Kd3 Ke6 48.Bb4 Rf2 49.a4 Nc7 50.g5 Rh2 51.Bf8 Kf7 52.Bd6 Rh5 53.Bc7 Rg5 54.Kc4 Rg1 55.Kb5 g5 56.d5 Rc1 57.d6 Ke6 58.Ka6 Ra1 59.Kb7 Kd7 60.Ka7 Ra4 61.Kb6 g4 62.Kc5 Re4 63.Kd5 Re3 64.Bb6 Re2 0–1. Becker – Holzke,Siegfried, Bergisch Gladbach–ch, 1989.

6.Be2 Ngf6 7.0-0 g6 8.d4 Bg7 9.de5 Ne5 (9...Ne4 10.Qc2 de5 11.Rd1+=) 10.Ne5+/- (10.Be5?! de5 11.Nc3 Qd1 12.Rad1 e4=) 10...de5 11.Qd8 Rd8 12.Be5 0-0 13.Bc7 Rd7 (13...Ne4 14.Bd8 Rd8 15.Na3 Ba1 16.Ra1+/-) 14.Be5+- Rc8 (14...Re8 15.Bc3+-) 15.Nc3 Rd2 16.Rfd1 Rd1 (16...Rb2 17.Rab1 Rb1 18.Nb1+-) 17.Rd1 (17.Bd1?! Rc4 18.b5 Nd5 19.Bg7 Kg7 20.Nd5 Bd5+/-) 17...Ne4 18.Bg7 Kg7 19.Ne4 Be4 20.f3 Bf5 21.Kf2 Ra8 (21...Be6 22.Rc1+-) 22.Rc1 a5 23.b5 (23.e4 Be6 24.a3 Rb8+-) 23...Rd8 (23...Rc8 24.Rd1+-) 24.e4 (24.c5 bc5 25.Rc5 Rd2+-) 24...Be6 25.Ke3 Kf6 (25...Rc8 26.f4+-) 26.a4 (26.c5 bc5 27.Rc5 Ba2 28.Rc6 Be6+-) 26...Ke5? (26...Rc8+-) 27.c5 Rc8 28.f4 Kf6 29.cb6 (29.cb6 Rc1 30.b7+-) 1-0. Mely (2265) - firtax (1715), ChessWorld.net, 2016.

5.a3= b6 6.Nc3 Ngf6 7.Be2 Be7 8.Bf3 Rb8 9.Nb5 Bb7 10.Na7 Bf3? 11.Nf3+/- Ra8 12.Nc6 Qc7 13.Ne7 Ke7 14.d3 Rhe8 15.0-0 Kf8 16.b5 Kg8 17.Re1 e4 18.Ng5 Ne5 19.Ne4 Ne4+= 20.Be5 Re5 21.de4+- Re4 22.Qd5 Rae8 23.Red1 R4e6 24.Rab1 Rd8 25.Qc6 Qb8 26.Qd5 Re5 27.Qd3 d5 28.cd5 Rh5 29.h3 Qd6 30.e4 f5 31.ef5 Rf8 32.g4 Rg5 33.Qe3 Rff5 34.Qe6 Qe6 35.de6 Rf6 36.Rd8 Rf8 37.e7 (37.e7 Re8 38.Re8 Kf7 39.Rb8 Ke7 40.Rb6+-) 1–0. Mear,D – Johnson,I, Newcastle, 1996.

5.b5 b6 6.Qf3 Rb8 7.Nc3 Bb7 8.Qg3 Qf6 9.Be2 Nh6 10.d3 Be7 11.Bf3 Nf5 12.Qh3 Qh4?? 13.Qf5+- 1–0. b4_player – opponent, gamecolony.com, 2007.

5.b5 b6 6.Nf3 a5 7.a4 Bb7 8.Be2 h6 (8...e4 9.Ng1=) 9.d3 Ngf6 10.Nbd2 Be7 11.e4 Nh7 12.0-0 Ndf6 13.Nh4 g6 (13...Ne4!? 14.de4 Bh4=) 14.g3 Qd7 15.Ng2 Ng4?? (better is 15...0-0-0+=) 16.Bg4+- f5 17.ef5 gf5 18.Bf3 Ng5 (18...0-0-0+-) 19.Bb7 Qb7 20.Qh5 Kd8 21.h4 (21.f4!? Kd7+-) 21...Ne6 22.Qf3 (better is 22.Qf5 Qd7+-) 22...Qf3 23.Nf3 Kd7 24.Rad1 f4 25.Kh2 fg3 26.fg3 Rhg8 27.Ne3 Rg6 28.Nd5 Rb8 29.Ne7 Ke7 30.Rg1 Kd7 31.Nd2 Nd4 32.Bd4 ed4 33.Ne4 Rf8 34.Rdf1 Re8 35.Rf7 Re7 36.Re7 Ke7 37.Rf1 Ke6 38.Rf4 h5 39.Kh3 d5 40.Ng5 Ke5 41.cd5 Kd5 42.Rf5 Kd6 43.Ne4 Ke6 44.Rh5 Kd7 45.g4 Kc7 46.g5 Re6 47.Rh7 Kb8 48.Rh6 Re4 49.de4 d3 50.Rd6 c4 51.g6 Kc7 52.e5 d2 53.Rd2 c3 54.Rc2 Kd7 55.g7 (55.g7 Ke6 56.g8Q Ke5 57.Qd8 Kf5 58.Re2 Kg6 59.Re6 Kg7 60.Qd7 Kg8 61.Re8) 1–0. Fournier,Frederic (1655) – juliaje, Active, 2007.

5.b5 b6 6.Nf3 Be7 7.Be2 Ngf6 8.d3 0-0 9.0-0 Bb7 10.Nbd2 d5 (10...a6 11.ba6 Ra6 12.Qb3=) 11.a4 (better is 11.Ne5!? Ne5 12.Be5 dc4 13.dc4+/-) 11...d4= 12.ed4 ed4 13.Re1 Qc7 14.Bf1 Ng4?? (14...Rfe8 15.a5+=) 15.h3?? (better is 15.Re7 Rfe8 16.Re2+-) 15...Bf3 16.Qf3?? (better is 16.Nf3 Nge5 17.a5=) 16…Qh2 0–1. Fournier,Frederic (1630) – enriquef, Active, 2007.

5.b5 Be7 6.Nc3 Ngf6 7.Nf3 0-0 8.Be2 b6 9.0-0 Bb7 10.a4 Qc7 11.d3 d5 12.cd5 Nd5 13.Nd5 Bd5 14.e4 Be6 15.Rc1 Bf6 16.Rc3 Rad8 17.Qa1 Rfe8 18.Ra3 Bg4 19.h3 Bf3 20.Bf3 Qd6 21.Bd1 Nf8 22.Bb3 Ne6 23.a5 Nd4 24.Qa2 Rd7 25.Bc4 g6 26.ab6 ab6= 27.Bc3 Kg7 28.Ra6 Rb8 29.Bd2 g5 30.Be3 h6 31.Qd2 Kg6 32.Rfa1 Rc7 33.Ra8 Ra8 34.Ra8 Qd7 35.Qa2 Nb5 36.Qb2 Nd6 37.Qb6 Nc4 38.dc4 Qc6 39.Qb8 Qe4?? 40.Ra6+- Rc6 41.Qb7 1–0. Dzieniszewski,Andrzej – Zygarowicz, Jelenia Gora, 1976.

5.b5 Ngf6 6.a4 b6 7.Na3 Bb7 8.d3 Be7 9.e4 0-0 10.g3 Ne8 11.Bg2 f5 12.Ne2 fe4 (12...Nef6 13.f3=+) 13.de4 (13.Be4 Qb8=+) 13...Ndf6 (13...Nef6 14.Qd3=) 14.Nc3= Nc7 15.0-0 Ne6 16.Nc2 Nd4 17.Ne3 a6 18.f4 ab5 (18...Rf7 19.Ncd5=) 19.ab5 Qd7 (19...Ra1 20.Ba1 ef4 21.Rf4+=) 20.fe5 (20.Ra8 Ba8 21.Qd3 Qe8+=) 20...de5= 21.Nf5 Ra1 22.Ba1 Ra8 (better 22...Bd6=) 23.Na4?? (23.Bh3 Qc7=) 23...Bd8 (23...Nf5 24.ef5 Bg2 25.Nb6 Qd1 26.Rd1-+) 24.Bd4 (better 24.Nc3=) 24...ed4?? (24...cd4 25.Qb3 Qe6=+ (25...Ne4? 26.c5 Qd5 27.Qd5 Bd5 28.Nb6 Bb6 29.Ne7 Kh8 30.cb6+-)) 25.e5+= Ne4?? (25...Bg2 26.Kg2 Qb7 27.Kg1+/-) 26.Nb2 (better 26.Qg4 Bg5 27.Nh6 Bh6 28.Qd7 Be3 29.Kh1 Nf2 30.Rf2 Bg2 31.Kg2+-) 26...Ra2 (better 26...Ng5 27.Qg4 Qc7 28.Bb7 Qb7+=) 27.Nd3?? (better 27.Qg4 Bg5 28.Be4 Be4 29.Qe4 (29.Qg5?! Bf5 30.Rf5 Rb2+=) 29...Rb2 30.Ra1+-) 27...Rg2!-+ 28.Kg2 Nc3 29.Qf3 Bf3 30.Rf3 Qe6 31.h3 (31.Nd6 Bc7 32.Kg1 Bd6 33.ed6 Qd6-+) 31…Qc4 0-1. foytik (2320) - alkhalil_84 (2110), Rated Classical game, lichess.org, 2016.

5.b5 Ngf6 6.Nc3 b6 7.d3 (7.Be2 a6 (7...Bb7 8.Nf3 e4 9.Ng5 h6 10.Nh3 a6 11.0-0 ab5 12.Nb5+=; 7...Be7 8.Bf3 Rb8 9.Nge2 0-0 10.0-0 a6 11.d3 Re8 12.Rb1+=; 7...Qe7 8.d3 Bb7 9.Bf3 Bf3 10.Nf3 Qe6 11.Ng5 Qf5 12.Nge4+=) 8.Bf3 Ra7 9.Nge2 Be7 10.0-0 0-0 11.ba6 Re8 12.d3+=; 7.d4 a6 (7...Bb7 8.d5 Be7 9.Bd3 a6 10.ba6 Ba6 11.Nf3 Bc8 12.0-0+=; 7...ed4 8.ed4 Qe7 9.Be2 cd4 10.Qd4 Bb7 11.Kf1 Qe5 12.Rd1+=; 7...Qe7 8.d5 e4 9.Be2 Ne5 10.h3 Bf5 11.Qa4 Nfd7 12.g4+=) 8.Be2 ab5 9.Nb5 Be7 10.Nf3 cd4 11.ed4 e4 12.Nd2=; 7.Qf3 Rb8 8.Nge2 a6 9.d4 Be7 10.ba6 Ba6 11.Nb5 ed4 12.ed4=) 7...Bb7 (7...Be7 8.Be2 0-0 9.Bf3 Rb8 10.Nge2 Qc7 11.0-0 Re8 12.Qd2+=; 7...a6 8.Be2 Be7 9.Bf3 Ra7 10.Nge2 0-0 11.ba6 Ra6 12.Bc6=; 7...Rb8 8.Nf3 Be7 9.Be2 0-0 10.0-0 Bb7 11.Re1 Ra8 12.d4=) 8.e4 (8.Nf3 a6 9.Be2 Be7 10.0-0 ab5 11.Nb5 0-0 12.Qb3=) 8...Be7 9.Nge2 (9.Nf3 0-0 10.Be2 a6 11.ba6 Ra6 12.0-0=) 9...0-0 10.f4 (10.Rb1 Re8 11.f4 Ng4 12.Qd2=) 10...ef4 (10...Nh5!?+= 11.g3 ef4 12.Nc1=) 11.Nf4= Ne5 (11...Ne8 12.Be2=) 12.Be2 Nfd7 13.0-0 Bg5 14.Nfd5 Bd5 15.Nd5 Bf6 (15...Nf6 16.Nf6 Bf6 17.Rb1+=) 16.Nf6 Nf6 17.Rf5 Nfd7 (17...a6 18.ba6 (worse is 18.Be5 de5 19.ba6 Qd4 20.Kh1 Ra6–/+) 18...Ra6 19.Qb1+= (worse is 19.Be5 de5 20.Qb1 Qd4 21.Kh1 Ra4–/+)) 18.a4 f6 19.Qd2 White prepares a5 19...Kh8 20.a5 Rc8 (20...a6 21.Bc3+=) 21.a6 Qe7 22.Raf1 Kg8 23.Qe3 Rcd8 24.Qg3 Kh8 25.h4 Rg8 26.Be5 (better is 26.h5!?+/-) 26...de5= 27.h5 g6 28.hg6 Rg6 29.Qh3 Qg7 30.Rh5 Rg8 31.g4 Nf8 32.Rff5 Qf7 33.Kf2 R8g7 34.Qh4 Ne6 35.Rh6 Rh6 36.Qh6 Rg6 37.Qh3 Nd4 38.Rh5 Rg7 39.Bd1 Ne6 40.Rf5 Rg6 41.Ke1 Ng7 42.Rf2 Ne6 43.Qh2 Qg7 44.Kd2 Rh6 45.Qg3 Qg5 46.Kc2?? (better is 46.Qe3=) 46...Nd4-+ 47.Kb2 Ne6 (better is 47...Rh1 48.Rh2 Rd1 49.Qf4 Qf4 50.Rc2 Rd2 51.Ka3 Rc2 52.g5 Qc1 53.Ka4 Ra2) 48.Rh2 Rh2 49.Qh2 Nf4 50.Kc3 Ne6 51.Kb2 Kg7 52.Qf2 Nd4 53.Kb1 Ne6 (53...Qf4 54.Qe1+=) 54.Kb2 Nf4 55.Kc3 (55.Qf3 Kf7=) 55...Nh3 (55...Kf8 56.Kc2+=) 56.Qh2 (56.Qd2 Kf7=) 56...Qe3 (56...Qc1!? 57.Qc2 Qc2 58.Kc2 Nf2-+) 57.Qd2+= Qd4 58.Kb3 Ng5 59.Qe2 Ne6 60.Qd2 0–1. Martinez Rodriguez,E (1910) – Llorente Gonzalez,JL, Oviedo Spain, Open, 2007.

5.b5 Ngf6 6.Nc3 Be7 A) 7.Nf3 0-0 (7...a6 8.ba6 Ra6 9.Bd3 Nb6 10.0-0 Be6 11.Qe2 Bg4 12.Rfb1=; 7...Qa5 8.Be2 a6 9.0-0 0-0 10.d4 ab5 11.Nb5 cd4 12.ed4=; 7...Nb6 8.Be2 0-0 9.0-0 Re8 10.a4 a5 11.d3 Qc7 12.Qc2=) 8.Bd3 Nb6 9.0-0 Bg4 10.h3 Bh5 11.a4 a5 12.ba6=; B) 7.d4 0-0 (7...a6 8.Be2 0-0 9.Nf3 ab5 10.Nb5 e4 11.Nd2 cd4 12.Bd4=; 7...ed4 8.ed4 0-0 9.Nf3 Nb6 10.Be2 cd4 11.Nd4 Qc7 12.Qd3=; 7...cd4 8.ed4 0-0 9.Nf3 Re8 10.Bd3 Bf8 11.Be2 e4 12.Nd2=) 8.Nf3 cd4 9.ed4 Re8 10.Be2 Qc7 11.0-0 e4 12.Nd2=; C) 7.Be2 0-0 (7...a6 8.ba6 Ra6 9.Nf3 0-0 10.0-0 Re8 11.d4 cd4 12.ed4=; 7...h6 8.d3 0-0 9.Nf3 Qa5 10.0-0 a6 11.d4 ab5 12.Nb5=; 7...Qa5 8.Nf3 a6 9.0-0 0-0 10.d4 ab5 11.Nb5 cd4 12.ed4=) 8.Nf3 Re8 9.0-0 a6 10.d3 Qa5 11.Qb3 Nb6 12.Rfb1=.

5.bc5 Nc5 6.d4 Nd7 7.Nf3 Qf6 8.Nc3+/- ed4 9.Nd4 Nc5 10.Nd5 Qd8 11.Nb5 Ne7?? 12.Ndc7+- Kd7 13.Qd6 1–0. pcmvr (2225) – jcekota (2215), net–chess.com, 2006.

5.Qb3 Ngf6=+ 6.Nf3 Be7 (6...a5 7.b5=+) 7.d3 Qc7 8.Be2 0-0 9.Nc3 h6 (9...Re8 10.0-0=) 10.0-0 Re8 11.Rac1 Nf8 12.Rfd1 Be6 13.a4 White prepares the advance b5 13...Rad8 14.h3 Qb8 15.Nd2 (15.d4 e4 16.Nd2 d5=) 15...d5 16.b5 dc4 (16...N8d7 17.Ba3=) 17.Nc4 cb5 18.ab5 N8d7 19.Ne4 Ne4 20.de4 f6 (20...Nb6 21.Rd8 Rd8 22.Qc2 Nc4 23.Bc4=) 21.Qc2 (better 21.Bg4!? Bg4 A) 22.hg4?! Nc5 23.Qa2 Rd1 (23...Ne4? 24.Nd6 Kh8 25.Ne4+-) 24.Rd1 Kh8=; B) 22.Ne5 Kh8 23.Nf7 Kh7 24.hg4+/-) 21...Bf7 (21...Rc8 22.Bg4 Bg4 23.hg4=) 22.Ra1 a6 (22...Qc7!?=) 23.ba6+/- ba6 24.Ra6 Nc5 25.Ba3?? (better 25.Rd8 Rd8 26.Ra2+=) 25...Rd1-+ 26.Qd1 Qb5 (better 26...Na6 27.Be7 Re7 28.Ne5 Qe5 29.Ba6 Qe4-+) 27.Bc5 (better 27.Nd6 Qb8 28.Bc5+-) 27...Qa6= 28.Nd6 (28.Ne5 Qa2 29.Nf7 Bc5=) 28...Qa8 (28...Qc6 29.Nf7 (worse 29.Ne8 Bc5 30.Ng7 Kg7-+) 29...Bc5 30.Bc4=+) 29.Nf7 (29.Ne8 Bc5 30.Nd6+=) 29...Kf7 (better 29...Bc5!? 30.Bc4 Kh7=) 30.Bc4 Kf8?? (better 30...Kg6 31.Qg4 Kh7+/-) 31.Qh5 (31.Qh5 Qa1 32.Kh2 Qh1 33.Kh1 Bc5 34.Qf7) 1-0. ClayPigeons (2085) - ajam73 (2115), Rated Bullet game, lichess.org, 2020.

5.d4 Qc7 6.Nf3 Ngf6 7.Nc3 g6 8.Bd3+= Bg7 9.0-0 0-0 10.Re1 Re8 11.Qc2 Nf8 12.de5 de5 13.c5 Nd5 14.a3 Nc3 15.Bc3 Bg4 16.Ng5 f6 17.Nf3 Be6 18.Nd2 Red8 19.Ne4 Nd7 20.Qe2 Kh8 21.Bc4 Bc4 22.Qc4 b5 23.Qb3 Nf8 24.Nd6 (24.Nd6 Rd7 25.Rad1+/-) 1–0. Schlapp12 – brawn, ChessWorld.net, 2005.

5.d4 Qc7 6.Nf3 Ngf6 7.c5 Be7 8.Be2 0-0 9.0-0 b6 10.de5 de5 11.cb6 ab6 12.a3 c5 13.Nc3 Ba6 14.Ba6 Ra6 15.b5 Raa8 16.a4 Rfd8 17.Qc2 Nf8 18.Qf5 Ng6 19.Rad1 Bd6 20.Nd5 Nd5 21.Rd5 Ra4 22.Rfd1 Raa8 23.g3 Bf8 24.Rd8 Rd8 25.Rd8 Qd8 26.Ne5 Qd1 27.Kg2 Qd5 28.e4 Qe6 29.Qe6 fe6 30.Nd7 Bd6 31.Nb6 Ne5 32.Be5 Be5 33.Nc4 Bb8 34.f4 Kf7 35.e5 Ke7 36.Kf3 Kd7 37.Ke4 h6 38.f5 Ke7 39.g4 Kf7 40.b6 Ke7 41.h3 Kd7 42.f6 gf6 43.ef6 Ke8 44.Ne5 Bd6 45.b7 c4 46.Nc4 Bb8 47.Ne5 1-0. Mettigel (2230) - yedi_harika (2240), Rated Bullet game, lichess.org, 2014.

5.d4 e4 6.Nc3 Ngf6 7.f3 d5 8.b5 cb5 9.cb5 Bb4 10.Qb3 Bc3 11.Qc3 0-0 12.Rc1 ef3 13.Nf3 Ng4 14.h3 Ne3 15.Qe3 Re8 16.Ne5 Ne5? 17.de5+- Qh4 18.Qf2 Qb4 19.Bc3 Re5 20.Kd2 Qe7 21.Be5 Qe5 22.Be2 Qb2 23.Rc2 Qb4 24.Kc1 Bf5 25.Qf5 d4 26.Rc8 Rc8 27.Qc8 Qf8 28.Qf8 Kf8 1–0. Bonetti,Shane – guest451, ICC, 2002.

5.Nf3 Qc7 6.Qb3 g6 (6...a5 7.d4=) 7.Nc3 Bg7 8.Rc1 (8.d4 a5+=) 8...Ne7 9.Be2 f5 (9...a5 10.b5=) 10.0-0 0-0? (10...a5 11.Ng5 Nf6 12.Nb5 cb5 13.cb5+-) 11.d4 (better 11.Nb5!? Qb8 12.Nd6+-) 11...Kh8 12.Ng5 Nf6 13.d5 (13.de5 de5 14.c5 Nfd5+=) 13...h6 14.Ne6 (better 14.Nf3!?+=) 14...Be6=+ 15.de6 Rfd8 (15...Qc8 16.a4=+) 16.Rcd1 (16.a4 Qc8=) 16...d5 (16...Qc8!?=+) 17.cd5= cd5 18.Rc1 Qd6 (better 18...Qb8!?+=) 19.Nb5+/- Qb6 20.Nc7 Rac8 21.Be5 Ne8 22.Bg7 Kg7 (22...Ng7 23.Nd5! Nd5 24.Rc8 Rc8 25.Qd5 Qb4 26.Rd1+/-) 23.Ne8 (23.Nd5!? Qe6 24.Bc4+-) 23...Re8+/- 24.Rc8 Nc8 (24...Rc8 25.Qa3+/-) 25.Qb2 (better 25.Qd5 Qb4 26.Rc1+-) 25...Kf8?? (better 25...Kg8!?+/-) 26.Rd1 (26.Qf6 Kg8 27.Qg6 Kh8 28.Qe8 Kg7 29.Qf7 Kh8 30.Qf8 Kh7 31.Qf5 Kg7 32.Qf7 Kh8 33.Qf8 Kh7 34.Bd3) 26...Qe6+- 27.Bf3 (27.Qh8 Ke7 28.Qh6 Kd8+-) 27...Nd6 (27...Qe5 28.Qe5 Re5 29.Bd5+/-) 28.Bd5 (28.Qh8!? Ke7 29.Qh6 Nf7 30.Qh4 Qf6 31.Qf6 Kf6 32.Bd5 Rd8+-) 28...Qe5 29.Qb3 (better 29.Qc2+-) 29...Ne4? (29...f4 30.Re1+/-) 30.Bg8 (better 30.Bf7 Rc8 31.Bg6+-) 30...Re7 31.Rd8 Kg7 32.Bc4 Nd2?? (better 32...Qc3 33.Qc3 Nc3+/-) 33.Qd3 (better 33.Rd2 f4 34.Rd5+-) 33...Qa1-+ 34.Qf1 Qf1 (better 34...Nf1 35.Bf1 Rc7-+) 35.Bf1+/- Nf1 36.Kf1 Rc7 37.Rd2 Kf6 38.Ke2 (38.Rd6 Kg5+/-) 38...Kg5 (38...Ke5 39.Kd3+/-) 39.Rb2 (39.a4 a6+/-) 39...Kf6 40.h3 Re7 (40...Ke5 41.b5+/-) 41.Kf3 g5 42.Ke2 (42.Rd2 Ke6+/-) 42...h5 43.Kd3 g4 (43...Rd7 44.Kc3+/-) 44.Ke2 (44.b5 gh3 45.gh3 Re4+/-) 44...gh3 45.gh3 f4 (45...Re4 46.Kf3+/-) 46.Kf3 fe3 47.fe3 Re5 (47...Kg5 48.Rd2+/-) 48.e4 Rf5?? (48...Rg5 49.Kf4 Rg1 50.Rb3+/-) 49.Ke3 (better 49.ef5 Kf5 50.Rc2+-) 49...Re5 (49...Rg5 50.Rf2 Ke6 51.Kf4+/-) 50.Kd4 (50.h4 Re6+-) 50...Ke6 (50...Rg5 51.Rc2+-) 51.Rf2 (51.Rc2 Rg5+-) 51...Rg5 52.Rf6?? (better 52.Rc2+-) 52...Kf6-+ 53.e5 (53.a4 Rg3 54.h4 Rb3-+) 53…Ke6 0-1. ClayPigeons (2115) - renzoelelectrico (2080), Rated Bullet game, lichess.org, 2020.

5.Nf3 Qc7 6.d4 Ngf6 7.Nc3 a6 8.a4 (8.Bd3 Be7+=) 8...b6 (8...ed4 9.ed4 Be7 10.Bd3+=) 9.Be2 (9.Bd3 ed4 10.ed4 d5 11.Qe2 Kd8+=) 9...Be7 10.0-0 0-0 11.Rc1 Bb7 12.b5 ab5 13.ab5 c5 14.de5 de5 15.Nd5 (15.Nh4 Rfd8=) 15...Nd5=+ 16.cd5 Qd6 (better 16...e4!? 17.Nd4 Bd5-/+) 17.e4= f5 18.Bd3 fe4 19.Be4 Ra2 20.Qb3 Ra5? (better 20...Rfa8+=) 21.Nd2+- Qh6?? (21...Nf6 22.Nc4 Bd5 23.Bd5 Qd5 24.Na5 ba5 25.Qd5 Nd5 26.Be5+-) 22.Nc4 (better 22.d6 c4 23.Qc4 Rf7 24.de7+-) 22...Ra7? (22...Kh8 23.Na5 ba5+-) 23.Ne5 (better 23.d6 Kh8 24.de7+-) 23...Ne5 24.Be5 Re8?? (better 24...Bd6 25.Qg3 Be5 26.Qe5 Qf6 27.Qf6 Rf6+/-) 25.d6+- Kh8 (25...Kf8 26.Bb7 (worse 26.de7 Re7 27.Qf3 Rf7+-) 26...Bd6 27.Qf3 Kg8 28.Qd5 Qe6 29.Bd6 Rb7 30.Qb7 Qd6 31.Rce1+-) 26.Bb7 (better 26.Qf7 Raa8 27.Bb7 Bd6 28.Ba8 Rf8 29.Bg7 Qg7 30.Qg7 Kg7+-) 26...Bg5 (26...Bd6 27.Bd6 Qd6+-) 27.f4 (27.f4 Rb7 28.fg5 Qg5 29.Qf3+-) 1-0. zembelek (2115) - loldonkaments (2280), Rated Blitz game, lichess.org, 2013.

5.Nf3 Be7 6.d4 Ngf6 7.Nc3 Qb6 (7...e4 8.Nd2=) 8.Qb3 0-0 9.Be2 a5 10.a3 (10.b5 Qc7=) 10...ab4 11.ab4 Ra1 12.Ba1 d5 Black plans e4 (12...e4 13.Nd2=) 13.c5 (13.de5 Ne4 14.Na2+= (14.cd5 Bb4 15.0-0 Bc3 16.Qb6 Nb6-+)) 13...Qc7= 14.0-0 e4 15.Nd2 Re8 (15...b6 16.Bb2=) 16.b5+= Nf8 17.Na4 (17.b6 Qb8+=) 17...Ng4 18.g3 f5 (18...Nf6 19.Bc3=) 19.Bc3 Bg5 (19...Be6 20.Nb6=) 20.Ra1 Qf7 21.bc6 (21.Nb6 Be6+=) 21...bc6 22.Qb6 (22.Nb6+=) 22...Qh5 (22...Qf6!?=) 23.Bg4 (23.h4 Bh4 24.gh4 Qh4 25.Bg4 Qg4 26.Kf1 f4 27.Qc6 fe3 28.fe3 Re7 29.Qd5 Be6 30.Qe4 Bc4 31.Nc4 Qe4-+ (worse 31...Re4 32.Kf2 Qf5 33.Ke2-+)) 23...fg4+= 24.Qc6 Re6?? (better 24...Qf7+=) 25.Qd5 (25.Qc8 Rh6 26.Nf1 Rf6+-) 25...Kh8 (25...Bd7 26.Ne4 h6 27.Nd6 Ba4 28.Ra4+-) 26.Ne4 Rh6 27.Ng5 (better 27.h4 gh3 28.Ng5+-) 27...Qh2 28.Kf1 Qh1 (28...Ba6 29.Ke1 Qg1 30.Kd2 Qf2 31.Kc1 Bc4 32.Nf7 Qf7 33.Qf7 Bf7+-) 29.Qh1 Rh1 30.Ke2 Rh2 (30...Ba6 31.Kd2 Rh2 32.Ne4+-) 31.Nf7 (better 31.Nb6!? Bb7 32.d5 Rh5+-) 31...Kg8 32.Ne5 (32.Nb6 Bb7 33.d5 Kf7+-) 32...Be6 (32...Ba6 33.Ke1+-) 33.c6 h5 34.Nb2 (better 34.c7 h4 35.Nb6 hg3+-) 34...h4 35.c7 (better 35.gh4!? g3 36.Nbd3 g2+-) 35...hg3 36.Rf1 (36.Nbd3 gf2 37.Nc5 f1Q 38.Kf1 Rh1 39.Kg2 Ra1 40.Ne6 Ra2 41.Bd2 Rd2 42.Kg3 Ne6 43.c8Q Kh7 44.Qe6 Re2+-) 36...g2 (36...gf2 37.Nbd3 g5 38.d5+-) 37.Rg1 Bd5 (37...Bc8 38.d5 Nd7 39.Nd7 Bd7+-) 38.e4 (38.c8Q Rh1 39.Nd7 Rg1 40.Qf8 Kh7 41.Qf5 Kg8 42.Qd5 Kh8 43.Qh5 Kg8 44.Qg6 Re1 45.Kd3 Kh8 46.d5 Re3 47.fe3 g1Q 48.Qg7) 38…Rh1 (38...Rh1 39.Rg2 Be6+-). ClayPigeons (2100) - ivanshop (2200), Rated Bullet game, lichess.org, 2021.

5.Nf3 f5 6.d4 e4 7.Nfd2 d5 8.Qb3 Ngf6 9.Nc3 Nb6 10.a4 (10.c5 Nbd7=) 10...a5 (10...dc4 11.Nc4 Be6 12.b5=) 11.c5 ab4 12.cb6 (12.Qb4 Nbd7 13.a5 Ng4=) 12...bc3=+ 13.Bc3 Bd6 14.a5 0-0 15.g3 Qe7 16.h4 g6 (16...Re8 17.h5=+) 17.Be2 h6 18.0-0 (18.Rb1 Rf7=) 18...Kh7 (18...f4 19.gf4 Ng4 20.Bg4 Bg4 21.Kg2-/+) 19.Rfd1 (19.Bb2 f4 20.ef4 Bh3+=) 19...g5 Black plans f4 (19...f4 20.gf4 (20.ef4? e3-+) 20...Ng4 21.Nf1=+) 20.hg5=+ hg5 21.Kg2 f4 22.Rh1 Kg6 (22...Kg8 23.gf4 gf4 24.ef4-/+) 23.gf4 gf4 24.Kf1? (24.ef4!? Kf7 25.Kf1=+) 24...f3 (24...fe3 25.fe3 Ng4 26.Ke1 Bg3 27.Kd1 Nf2 28.Kc2 Nh1 29.Rh1 Rf2 30.Bh5 Kg7-+) 25.Bf3? (better 25.Bd1-/+) 25...ef3-+ 26.Nf3 Ne4 27.Nh4? (27.Rg1 Ng3! 28.Ke1 Rf3 29.Bd2-+) 27...Kg7 28.Be1 (28.Rg1 Bg3 29.Ra2 Qh4 30.Bb4 Qh3 31.Ke1 Rf2 32.Kd1 Bg4 33.Kc1-+) 28...Qf6 (better 28...Rf2 29.Bf2 Nd2 30.Ke2 Nb3 31.Rag1 Kf7-+) 29.f4 Be6 (29...Bg4 30.Rg1 Qg5 31.Rg2-+) 30.Ra2 Kf7 31.Rg2 (31.Nf3 Rh8 32.Rg1 Ke8-+) 31...Rg8 32.Rhg1 (32.Rg8 Rg8 33.Ke2-+) 32...Bh3 33.Qc2 Rg4 34.Nf3 (34.Ke2 Bg2 35.Ng2 Rag8-+) 34...Rag8 35.a6 (35.Nh4 Bb4! 36.Rh1 Qh4 37.Bh4 Rg2 (37...Rh4? 38.Rh3 Rh3 39.Rg8 Kg8 40.a6 ba6 41.b7 Rf3 42.Kg2 Rg3 43.Kh2+-) 38.Rh3 Rc2-+) 35...Rg2 36.Rg2 Rg2 37.Qg2 Bg2 38.Kg2 ba6 39.Bh4 (39.Kf1 Qe6 40.Ng1 c5 41.dc5 Bc5-+) 39...Qg6 (39...Qe6 40.Ng5 Ng5 41.Bg5 Qe3 42.b7-+) 40.Kf1 Ke8 (better 40...Qg4 41.Ng5 Ng5 42.Bg5 Qf3 43.Kg1 Qe3 44.Kg2 Qd4 45.b7-+) 41.b7 (41.Ng5 Nd2 42.Kg2 Qh5-+) 41…Qg7 0-1. zembelek (2120) - loldonkaments (2225), Rated Blitz game, lichess.org, 2013.

5.Nc3 g6 6.Nf3 Bg7 7.d4 0-0 8.Be2 ed4 9.ed4 d5 10.c5 c6 11.a4 Re8 12.0-0 Nf8 13.a5 a6 14.h3 Bf5 15.g4 Bd7 16.Qd2 Ne6 17.Na4 Kh8 18.Ne5 Be5 19.de5 g5 20.f4 gf4 21.Rf4 Nf4? 22.e6+- f6 23.Bf6 Kg8 24.Qf4 Ng6 25.Qf2 Qc7 26.ed7 Rf8 27.g5 Qd7 28.Bg4 Qf7 29.Nb6 Rae8 30.Nd7 1–0. Gazzini,Remo – Pacini,Antonio, corr Italy, 1975.

5.Be2 a5 6.b5 =.

5.Be2 Ng6 6.a3 Be7 7.Nf3 0-0 8.0-0 f5 9.d4 e4 10.Nfd2 Bg5 11.g3 b6 12.Re1 Bb7 13.Bf1 1–0. Shutov,Nikolay A – Artemov,Artem, Nalchik RUS, IPCA Ch, 2014.

5.Qb3 Ngf6 6.Nf3 Be7 (6...a5 7.Qa4=+) 7.d4 e4 8.Nfd2 0-0 9.Nc3 Kh8 10.Be2 Nb6 11.a4 a5 12.b5 Be6 13.Nd5 (better 13.d5 Bd7 14.0-0=) 13...Nbd5 14.cd5 Bd5 15.Bc4 Bc4 16.Nc4 Qd7 17.Rc1 Rac8 (17...f4 18.ef4 Nd5 19.g3-/+) 18.g3 (18.Na5!? Ra8 19.Bc3=+ (worse 19.Nb7 Ra7-/+)) 18...b6 19.Nd2 g5 (19...c6 20.bc6 Rc6 21.Rc6 Qc6 22.0-0-/+) 20.Qc2 (20.d5=+) 20...f4?? (20...d5!?-/+) 21.Ne4 (better 21.d5!?+=) 21...Ne4=+ 22.Qe4 fe3 (22...d5 23.Qd3=+) 23.fe3 (23.Qe3 d5=) 23...Rce8 (23...d5 24.Qd3=+) 24.Ke2 (24.d5 Bf6 25.Bf6 Rf6=) 24...Bf6 (24...d5 25.Qg2-/+) 25.Qd3 Qg4 (25...d5 26.Rhf1=+) 26.Kd2= Qf3 27.Rcf1 (27.Rhf1 Qg2 28.Qe2 Qd5=) 27...Qd5 (27...Qg2 28.Qe2 Qd5 29.Qd3=) 28.Re1 (28.h4 g4=) 28...Qa2 29.Kc2? (better 29.Qc2=) 29...Qa4-/+ 30.Kc1 c5 31.Rhf1 (31.bc6 Qc6 32.Kd2 d5-+) 31...cd4 (31...c4 32.Qa3 Qb4 33.Qb4 ab4 34.Rf5-+) 32.ed4 (32.Rf6 Rc8 33.Kb1 Rf6 34.Bd4 Qb4 35.Ka2 Kg7=+ (35...Qe1? 36.Bf6 Kg8 37.Qd5 Kf8 38.Qd6 Kf7 39.Qe7 Kg6 40.Qg7 Kf5 41.Qg5 Ke4 42.Qf4 Kd3 43.Qf5 Ke2 44.Qg4 Ke3 45.Qe6 Kf2 46.Bd4 Kf1 47.Qc8 Qe2 48.Bb2+-)) 32...Re1-+ 33.Re1 Rc8 34.Kb1 Bg7 (34...Qb4 35.Re6 Rf8 36.Qc3 Qb5 37.Rf6 Rf6 38.d5 Qf1 39.Ka2-/+) 35.Re7 Qb5?? (better 35...Qb4-/+) 36.Rg7 (36.Qb5 Bf6 37.Rb7 Kg8 38.Qd5 Kh8 39.Qf7 Rc1 40.Kc1 Be7 41.d5 Bf6 42.Bf6) 36...Qd3 37.Ka1 Kg7 (37...Rc4 38.Rh7 Kh7 39.d5 Qc2 40.Ba3 Ra4 41.h4 Ra3) 38.d5 (38.Ka2 Rc4 39.d5 Kg6 40.Ba3 Rc2 41.Bb2 Qc3 42.h3 Qb2) 38...Kg6 (38...Kg8 39.h4 Qd1 40.Ka2 a4 41.hg5 Qb3 42.Ka1 Rc2 43.g6 Qb2) 39.Ka2 (39.Bc1 Rc1 40.Kb2 Qc3 41.Ka2 Ra1) 39...Qd1 (39...Rc4 40.Ba3 Rc2 41.Bb2 Qc3 42.h3 Qb2) 40.Ka3 (40.h4 Rc4 41.h5 Kf7 42.Ba3 Qc2 43.Ka1 Ra4 44.g4 Ra3) 40...Rc2 (40...Rc4 41.Ka2 Ra4 42.Ba3 Qc2 43.Ka1 Ra3) 41.Kb3 (41.h4 Qd2 42.h5 Kf7 43.Kb3 Rb2 44.Kc4 b5) 41...Rb2! 42.Kb2 Qd2 43.Ka3 (43.Kb1 a4 44.h4 a3 45.h5 Kf6 46.Ka1 Qb2) 43...Qh2 (43...Qc2 44.h4 b5 45.h5 Kf6 46.g4 b4) 44.Ka4 Qg3 (44...Qb2 45.g4 Qb4) 45.Kb5-+ Qf3 46.Ka6 Qd5 47.Ka7 g4 48.Kb8 g3 49.Ka7 a4 50.Kb8 (50.Kb6 g2 51.Kc7 g1Q 52.Kd8 Qa7 53.Ke8 Qg8) 50...a3 (50...Qc6 51.Ka7 b5 52.Kb8 g2 53.Ka7 g1Q 54.Kb8 Qgb6) 51.Kc7 a2 52.Kd8 (52.Kd7 Qb7 53.Kd6 a1Q 54.Ke6 Qf6) 52...b5 (52...Qc6 53.Ke7 a1Q 54.Ke6 Qe5) 53.Ke7 (53.Kc7 a1Q 54.Kd8 Qc6 55.Ke7 Qf6) 53...b4 (53...a1Q 54.Kd8 Qc6 55.Ke7 Qf6) 54.Kd7 b3 (54...Qb5 55.Kd8 a1Q 56.Kc7 Qg7 57.Kd6 Qge5) 55.Ke7 (55.Kc8 Qc6 56.Kb8 b2 57.Ka7 a1Q 58.Kb8 b1Q) 55...Qc5 (55...a1R 56.Kd8 Ra7 57.Ke8 Qa8) 56.Ke8 (56.Kd7 a1Q 57.Ke6 Qc6 58.Ke7 Qf6) ½-½. ClayPigeons (2140) - Shark29 (2155), Rated Bullet game, lichess.org, 2021.

5.Nc3 Ngf6 6.Nf3 a5 7.Ng5 Qe7 8.Nb5 Nb6 9.c5 dc5 10.bc5 Qc5?? 11.Rc1+- Qb4 12.Nc7 Ke7 13.Na8 Na8 14.Rc8 Qb2 15.Ra8 h6 16.Nf3 Ne4 17.Ra5 Kf6 18.Ne5 Bb4 19.Nc4 Bd2 20.Nd2 Qb4 21.Rb5 Qc3 22.Rb6 Ke5 23.Bc4 Nd6 24.Ke2 Nc4 25.Nf3 Ke4 26.Re6 Ne5 27.Re5 Qe5 28.Qd3# 1–0. pierre – mikel44, internet, 2008.

5.Nc3 Ngf6 6.Nf3 Be7 7.Be2 (7.d4 e4 8.Nh4 Nb6=) 7...e4 (7...a5 8.ba5 0-0 9.d4=) 8.Nd4= Ne5 9.f4 (9.0-0 0-0=) 9...Nc6 (9...ef3 10.gf3 d5 11.cd5 Nd5 12.Nd5 Bh4 13.Kf1 Qd5 14.Qb3 Qb3 15.Nb3+=) 10.Nd5 (10.Nc6!? bc6 11.Qa4+=) 10...Nd4 11.Bd4 (< 11.Ne7 Ne2 12.Bf6 Nf4 13.ef4 gf6 14.Nc8 Qc8 (< 14...Rc8 15.Qh5 Ke7 16.Qf5+=) 15.Qh5 Ke7=+) 11...c5 12.Ne7 Qe7 13.bc5 (13.Bc3 0-0=) 13...dc5 14.Bc3 0-0 15.0-0 Rd8 16.a4 Be6=+ 17.a5 Qf7 18.Qa4 Bd7 19.Qa3 Qe7 20.Qb2 Bc6 21.Bf6 Qf6+= 22.Qf6 gf6 23.Ra2 Rd6 24.Rb1 Rad8 25.Rbb2 R6d7 26.Kf2= Rg7 27.g3 Kf7 28.Bd1 Ke6 29.Ba4 Ba4 30.Ra4 Rd3 31.Raa2 Kd6 32.Ra1 Kc6 ½–½. Melich,Jindrich (2190) – Cvikl,Michal, CZE–chT2b, 1996.

5.Nc3 Ngf6 6.Nf3 g6 7.d4 e4 8.Ng5 Qe7 9.Nb5 Nb8 10.d5 Bg7 11.h4 h6 12.Nh3 g5 13.Nd4 Na6 14.Qb3 Nd7?? 15.Be2?? c5?? 16.dc6 bc6?? 17.Qc3 Rb8?? 18.hg5 hg5=+ 19.0-0-0? Nac5?? 20.Qa3+= Ne5? 21.Nb3?? Nb3 22.Qb3–/+ 0-0?? 23.Qc2 d5 24.c5 f4 25.a3=+ f3 26.gf3 ef3 27.Bf1 (27.Bf1 a5 28.Qa4 (28.ba5 Bf5 29.e4 Be4 30.Be5 Bc2 31.Bb8 Bd1 32.Kd1 Rb8 33.Ng5 Qg5-+) 28...ab4 29.ab4=+; 27.Bd3 a5 28.Bh7 Kf7=+). Popov,Vasil – Nicevski,Dejan (2280), Bankia op, 1989.

5.d4 Ngf6 6.de5 de5 7.c5 Be7 (7...a5!? 8.Qa4 c6=) 8.Nf3+= e4 (8...a5 9.Ng5 (worse 9.Ne5 Ne5 10.Qd8 Kd8=+; worse 9.Be5 ab4 10.Bb5 c6-/+) 9...Nb8 A) 10.Be5? Qd1 (10...ab4?! 11.Bb5 Nc6 12.Qb3=) 11.Kd1 Ng4-+ (11...ab4?! 12.h3=+); B) 10.Bb5 Nc6 11.Qa4=) 9.Nd4 (9.Ng5 Nb8 10.Qb3 Nd5+=) 9...Nf8 10.Bc4 Ng6 11.Qb3 Ne5 12.Be2 g6 (12...a5!? 13.Nf5 Bf5 14.Be5 ab4 15.Qb4 b6 16.Qb5 Bd7+=) 13.Nd2 Rf8 14.Nc4 (14.Rd1 Nd3 15.Bd3 ed3 16.Qd3 a5+/-) 14...Nc4 15.Bc4 Bd7 16.0-0-0 (16.0-0 Qb8+/-) 16...Qc8 (better 16...Qb8!?+=) 17.Ne6+- Be6 18.Be6 Qb8 19.Rd2 (19.Be5!? b5 20.c6+-) 19...c6 (19...a5 20.ba5 c6 21.Bd4+=) 20.Rhd1 (20.h4 Qc7+=) 20...Qc7 (20...Qh2 21.Bd7 Nd7 22.Rd7 Qg2 23.Qe6+-) 21.Bd7 (21.f4!? ef3 22.gf3+=) 21...Nd7= 22.Rd7 Qh2?? (better 22...Qd7 23.Rd7 Kd7=) 23.Qe6+- Qh4 24.g3 Qg5 25.Rb7 Qf6 (25...a5 26.Qc6 Kf7+-) 26.Qf6 (26.Bf6 Rf7 27.Re7 Re7 28.Qe7) 26...Bf6+- 27.Bf6 Rf6 28.Rdd7 h5 (28...a5 29.Re7 Kf8 30.Rh7+-) 29.Ra7 Ra7 30.Ra7 g5 (30...Kd8 31.a4+-) 31.Rh7 1-0. dannysmet (2030) - navojoalov (2005), Rated Blitz game, lichess.org, 2021.

5.Nf3 Ngf6 6.d4 e4 7.Nfd2 Be7 8.Be2 0-0 9.Nc3 c6 10.0-0 d5 11.Qb3 Nb6 12.a4 White prepares b5 (12.c5 Nbd7+=) 12...Be6 (12...dc4 13.Nc4 Be6 14.a5=) 13.c5 Nbd7 14.b5 Rf7 15.a5 a6 16.ba6 ba6 17.Na4 Qc7 (17...Qa5 18.Ba6 Rb8 19.Nb6 Nc5 20.dc5 (20.Ra5?? Nb3 21.Nb3 Rb6-+) 20...Qc5 21.Bd4+=) 18.Nb6+= Ra7 19.Ba3 f4 20.Rab1 Bg4 21.Nd7 (better 21.f3!? ef3 22.Bf3 fe3 23.Qe3+=) 21...Be2=+ (worse 21...Bd7 22.ef4 Qf4 23.Bc1+=; worse 21...Qd7 22.f3 ef3 23.Nf3=) 22.Nf6 Rf6 (22...Bf6 23.Qb8 Bd8 24.Rfe1 fe3 25.Re2 ed2 26.Rd2 Qa5 27.Bc1-/+) 23.Qb8 (23.Ne4 Rg6 (worse 23...Bf1 24.Nf6 Bf6 25.Kf1+=) 24.Rfc1 Bf3 25.Qb8 Bd8=+) 23...Qb8 (23...Bd8 24.Rfe1 f3 25.Rb2-/+) 24.Rb8=+ Kf7 25.Rfb1 (25.Re1 f3=+) 25...Bb5 (25...fe3 26.fe3 Rf5 27.Nf1-/+) 26.ef4= Rf4 27.Nf1 Bf6 28.Bb2 (28.Bc1 Rh4 29.Rb4 Ke6=) 28...Kg6 (28...Bd3 29.Re1=+) 29.Ne3 (29.Bc1!? Rh4 30.Be3=) 29...Rf7-/+ 30.Bc3? (30.Nd1 Bd3 31.Ra1 Rf5-/+) 30...h5?? (better 30...Rf2! 31.Re8 Re2-+) 31.Rb2 Kh6 (31...Bg5 32.Be1-/+) 32.h3 g5 33.Rb6 Kg7 34.g4 hg4 35.hg4 Bd8 36.Rb8 Bc7 37.Rc8 Rf3 0-1. jhonores (2235) - Bonus100 (2225), Rated Blitz game, lichess.org, 2020.

5.Nf3 g6 6.d4 Bg7 7.Qb3 Nh6 8.Na3 Nf7 9.h4 a5 10.Qa4 0-0 11.b5 f4. McDonald – Eversole.

5.Qb3 a5 6.a3 c6 7.Nc3 Qe7 8.Nf3 Nh6 9.Be2 Nf7 (9...ab4 10.ab4 (worse 10.Qb4 e4=+) 10...Ra1 11.Ba1+=) 10.d4 (10.0-0 Ra7+=) 10...g6 (10...ab4 11.Qb4 e4 12.Nd2+=) 11.0-0 Bg7 12.Rfe1 0-0 13.Rad1 ab4 14.ab4 Re8 (14...f5 15.Ra1 Ra1 16.Ra1=) 15.b5 Nf8 16.Ba3 (16.Ra1 Bg4+=) 16...Qc7 (16...Bg4 17.de5 fe5 18.Ne4+=) 17.Rb1 Bf5 18.Rb2 Ra7?? (better 18...Bg4 19.Ra1 f5 20.de5 Ne5 21.Ne5 Be5 22.Bg4 fg4=+) 19.b6+- Qb8?? (19...Ra3 20.bc7 Rb3 21.Rb3 Bc8+-) 20.ba7 Qa7 21.Ra2 Qb8 22.de5 (22.d5 Qc7+-) 22...de5 (22...fe5 23.e4 Be6 24.Rb2+-) 23.e4 Bg4 24.h3 (24.Rb1 Bc8+-) 24...Be6 25.Qb4 (25.Rb2!? Bc8+-) 25...Nd7 26.Rb2 b5 (26...b6 27.Qb3+-) 27.cb5 cb5 28.Nb5 Bf8 29.Qa4 Ba3 30.Qa3 (30.Na3?! Qb2 31.Bc4 Qb7=) 30...Qb6 (30...Qc8 31.Rb4 Qc5 32.Rc1+-) 31.Reb1 (31.Rc1 Rb8 32.Qe7 f5 33.ef5 gf5+-) 31...Kg7 (31...Qc6 32.Nd2+-) 32.Nbd4 (32.Rc1!? Rb8 33.Rcc2 Rb7+-) 32...Qd6 33.Qd6 (33.Ne6 Qe6 34.Rb7 Nd6+-) 33...Nd6 34.Ne6 Re6 35.Rd2 (35.Rc2!? Kf7+-) 35...Nc5 36.Rbd1 (36.Bd3 Nd3 37.Rd3 Kf7+-) 36...Nce4 37.Rd3 Kf7 (37...f5 38.Nd2+-) 38.Ra3 Kg7 (38...Re7 39.Ra6 Rd7 40.Bb5+-) 39.Ra7 Kh6 40.Bd3 (40.Ra6 Nc3 41.Rdd6 Rd6 42.Rd6 Ne2 43.Kf1 Nd4 44.Nd4 ed4 45.Rf6 Kg5+-) 40...f5 (40...Nc5 41.Bc2+-) 41.Be4 Ne4 42.Nh2 (42.Rd5 Rb6+-) 42...f4 (42...Nf6 43.Kf1+-) 43.Ng4 Kg5 44.f3 (44.Rd5 Nf6 45.Re5 Re5 46.Ne5 Kf5+-) 44...Ng3 (44...h5 45.Ne5 (worse 45.fe4 hg4 46.hg4 Kg4+-) 45...Nc3 46.Re1+-) 45.Kf2 (45.Kf2 h5 46.Nh2+-) 1-0. ClayPigeons (2090) - Geige4711 (2115), Rated Bullet game, lichess.org, 2020.

5.Qb3 Nh6 6.Nf3 a5 7.d4=.

5.Qb3 Nh6 6.Nf3 Nf7 7.d4 c6 8.Nc3 g6 (8...a5 9.b5+=) 9.Be2 Qe7 10.0-0 Bg7 11.Rfe1 0-0 12.Rac1 Re8 13.a4 White prepares b5 13...a5 14.b5 Nf8 15.Ba3 Qc7 (15...Bg4 16.d5+=) 16.Rc2 (16.Rcd1 e4 17.Nd2 f5+=) 16...Bf5 (16...Bg4 17.d5+=) 17.Rcc1 Rad8 (17...Bc8!?=) 18.Red1 White intends d5 18...Qc8 19.bc6 bc6 20.Rd2 (20.d5 c5+=) 20...Be6 (20...Qc7 21.e4 ed4 22.ef5 dc3 23.Rc3 (worse 23.Qc3 Bh6-/+) 23...gf5 24.Qb1+=) 21.d5+/- cd5 22.Nd5 (22.cd5 Bg4+/-) 22...Bd5 (22...Qd7!?+/-) 23.Rd5 Ne6 24.Rcd1 (24.Ra5 e4 25.Nd4 f5+-) 24...Bf8 (24...Qc7 25.Qb5+/-) 25.Nd2 (25.Ra5 Bg7+-) 25...Nc5 26.Qc2 f5 27.Nf3 (27.e4+/-) 27...Qc6 Exerts pressure on the isolated pawn (27...Bg7 28.Bc5 dc5 29.Nd2+=) 28.Bf1 (better 28.Bc5 dc5 29.Ne5 Re5 30.Rd8 Nd8 31.Rd8+-) 28...Na4 29.c5 (29.Ra5!? Ra8 30.Rb5+=) 29...Nc5 (29...e4 30.Ne1 Nc5-/+ (30...dc5?! 31.Rd8 Rd8 32.Rd8 Nd8 33.Qb3 c4 34.Bc4 Kg7 35.Bb5+=)) 30.Bc5=+ dc5 31.Rc5?? (better 31.Rd8 Rd8 32.Rd8 Nd8 33.Ne5=+) 31...Bc5 (31...Qc5 32.Qb1-+) 32.Bc4 (32.Rc1 Rc8 33.Qa2 Kg7-+) 32...Kg7 33.Qd2 (33.Rd8 Nd8 34.Qe2-+) 33…Rd2 (33...Rd2 34.Rd2 Bb4-+) 0-1. ClayPigeons (2090) - Geige4711 (2185), Rated Bullet game, lichess.org, 2020.

5.Qb3 Nh6 6.Nf3 Nf7 7.d4 c6 8.Bd3+= a5 9.a3 Qe7 10.Be2 (10.Nbd2 ed4 11.Nd4 Nfe5+=) 10...g6 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.0-0+= Bg7 12.Nc3 White intends b5 12...0-0 13.Nd2 (13.b5 f5+=) 13...Kh8 (13...f5 14.Nf3=) 14.Bf3 (14.Rfd1 f5+=) 14...Re8 (14...Ng5 15.b5=) 15.b5+= c5 (15...Ng5 16.Qd1+=) 16.a4 (16.Nd5 Qd8+/-) 16...Rb8 (16...Nb6 17.dc5 dc5 18.Nd5 Nd5 19.cd5+/-) 17.Nd5+/- Qd8 18.Ba3 (18.de5 Nde5 19.Be2 Be6+/-) 18...b6 (18...ed4 19.ed4 cd4 20.Rae1=) 19.Rac1 (19.dc5 Nc5 20.Qc2 Ng5+=) 19...Bb7 (19...ed4 20.ed4 cd4 21.Rce1=) 20.Rfe1 Bd5 (20...Ng5 21.Be2+=) 21.Bd5+/- Qe7 22.Bc6 (22.Ne4 Rf8+/-) 22...Rf8 (22...ed4 23.Bd7 Qd7 24.ed4 Re1 25.Re1 cd4 26.Bb2+=) 23.Nf3 f5 Black prepares e4 24.Nd2 Nf6 Black plans e4 25.de5 (25.Rcd1 Nd8+=) 25...de5 26.Nf3 (26.e4!?+=) 26...e4=+ 27.Nd2 Ne5 28.Rcd1 (28.Red1 Rfd8-/+) 28...Nd3 (28...Rbd8 29.Nb1-/+) 29.Re2=+ Rbd8 30.Nf1 h5 (30...Ne5 31.Red2=+) 31.Red2 h4 32.Qc2 (32.Bb2 h3=) 32...h3 33.Ng3 (33.f4 hg2 34.Rg2 Kh7=+) 33...hg2 34.Ne2? (better 34.Kg2 Ng4 35.h3-/+) 34...Ng4-+ 35.Nf4 Nf4 36.ef4 Bd4 (36...Qh4 37.Kg2 Qh2 38.Kf1 Rd2 39.Qd2 Qh1 40.Ke2 Qf3 41.Kf1 Nh2 42.Ke1-+) 37.Rd4?? (37.Bb2 Qh4 38.Kg2 Qh2 39.Kf1 Qh1 40.Ke2-+) 37...Rd4 38.Rd4 (38.Kg2 Qh4 39.Rd4 Qh2 40.Kf1 Ne3 41.fe3 Qc2 42.Bc5 bc5 43.Rd6-+) 38...Qh4 39.Kg2 Qh2 40.Kf1 cd4 (better 40...Ne3 41.fe3 Qc2 42.Bc5 bc5 43.Rd6-+) 41.Bb2 (41.Qb2 Rd8 42.Bd5-+) 41...Ne3! 42.fe3 Qc2 43.Bd4 Kh7 44.Bd5 (44.Bb6 g5 45.fg5 f4-+) 44…Qa4 0-1. ClayPigeons (2175) - Geige4711 (2275), Rated Bullet game, lichess.org, 2021.

5.Qb3 Nh6 6.Nf3 Nf7 7.d4 e4 8.Nfd2 f5 9.Nc3+=.

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

5.Nc3 Be7 6.Nf3 0-0 7.Be2 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Nbd7 7.Nc3).

5.Nc3 Be7 6.Nf3 b6 7.Be2 0-0 8.0-0 Bb7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 8.Nc3 Nbd7).

5.Nc3 g6 6.Nf3 Bg7 7.d4 0-0 8.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.Nc3).

5.Nf3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Nbd7).

5.Nf3 Be7 6.Nc3 0-0 7.Be2 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Nbd7 7.Nc3).

5.Nf3 Be7 6.Nc3 b6 7.Be2 Bb7 8.0-0 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 8.Nc3 Nbd7).

5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Nbd7).

5.Nf3 Be7 6.Be2 b6 7.Nc3 Bb7 8.0-0 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 8.Nc3 Nbd7).

5.Nf3 g6 6.Be2 Bg7 7.0-0 0-0 8.d4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.0-0).

5.a4 Bg7 6.b5 Ne7 7.Nc3 0-0 8.Nf3 f5 (8...e4 9.Nd4 c5 10.Nb3=) 9.Be2= e4 10.Ng5 Ne5 11.f4 ef3 12.Nf3 Be6 13.Qb3 h6 (13...f4 14.0-0 fe3 15.de3=) 14.0-0+= Qe8 15.Nd4 Bf7 16.Nc2 Rb8 17.d4 Nd7 18.e4 (18.a5 a6+=) 18...Kh7 (18...fe4 19.Ne4 d5 20.Nd2+=) 19.a5 fe4 20.Ne4 Nf5 21.Bd3 Qd8 22.a6 (22.Nd2 Qg5 23.Bf5 gf5+=) 22...b6 (22...d5!? 23.cd5 c6+=) 23.Rae1 Qh4 24.g3 Qd8 25.g4 Ne7 26.Nb4 Be8 (26...Kh8 27.g5+-) 27.d5 (27.g5 Rf5+-) 27...Ne5 (27...Rf1 28.Rf1 Ne5 29.Be2+/-) 28.Rf8+- Bf8 29.Nf6 Kg7 30.Re5 (30.Re5 de5 31.Be5+-) 1-0. BeepBeepImAJeep (2180) - Ivan1950 (2095), lichess.org, 2015.

5.Qb3 Bg7 6.d4 Ne7 7.Nf3 0-0 8.Be2 c6 9.0-0+= a5 10.a3 a4 11.Qc2 Qc7 (11...ed4 12.Nd4 Ne5 13.Nc3+/-) 12.Nc3+/- h6 (12...c5 13.Na4 cd4 14.ed4+/-) 13.Na4 Kh7 (13...Re8 14.de5 Ne5 15.Ne5 de5 16.e4+/-) 14.Nc3 Nf6 15.Rfd1 Bf5 16.Bd3 (16.e4 ed4 17.Nd4 Bg4+/-) 16...Bd3 17.Qd3 (worse 17.Rd3 e4 18.Ng5 hg5-/+) 17...Rae8 (17...Nf5 18.Ne4+/-) 18.Qc2 Nf5 19.b5 (19.de5 de5 20.e4 Nd4+/-) 19...e4+/- 20.Nd2 Qb8? (20...d5 21.bc6 bc6 22.Na4+/-) 21.Qb3 (21.Nde4!? Ne4 22.Ne4 cb5 23.cb5 Rc8+-) 21...Qc7+/- 22.a4 Qe7 23.a5 Qd7 (23...cb5 24.Qb5 Ra8 25.Nd5 Nd5 26.Qd5+-) 24.a6 b6 (24...cb5 25.a7 (25.Nb5?! ba6 26.Ra6 Ra8 27.Ra8 Ra8+/-; worse 25.cb5 ba6 26.Ra6 Rb8+-) 25...Ra8 26.Qb5+- (26.Nce4?! Ne4 27.Ne4 bc4 28.Qc4 b5+/-; 26.Nde4?! Ne4 27.Ne4 bc4 28.Qc4 b5+/-)) 25.Rdb1 (25.bc6 Qc6 26.Qb5 Qa8+-) 25...c5 26.d5 Ra8 (26...Nh4 27.h3+-) 27.Qc2 Rfe8 28.Bc1 (28.Nce4!? Ne4 29.Ne4 Bb2 30.Rb2 Qe7+-) 28...Qe7 29.Bb2 Nd7?? (29...Qd7 30.Nce4 Ne4 31.Ne4 Bb2 32.Rb2 Qe7+-) 30.Ne2 (better 30.Qe4!? Qd8 31.Qf4 Ne5+-) 30...Bb2 31.Qb2 Ne5 (31...Qh4 32.Rf1+-) 32.Qc2 (32.Nc3 Nh4 33.Nce4 f5+-) 32...Nd3 (32...Ng4 33.Nc3 Qh4 A) 34.Nde4?? Qh2 35.Kf1 Nfe3 36.fe3 Qh1 37.Ke2 Qg2 38.Ke1 Qc2-+; B) 34.Nce4?? Qh2 35.Kf1 Nge3 36.fe3 Ne3 37.Kf2 Qf4 38.Nf3 Nc2-+ (38...Re4?! 39.Qd2-+); C) 34.Nf1+-) 33.Nf1 (33.Nc3!? Nf2 34.Kf2 Qh4 35.Kg1 Ne3+-) 33...Nh4 (33...Ra7 34.Nc3+-) 34.Nfg3 Nf2?? (better 34...Ra7+-) 35.Kf2 Qg5 36.Nf4 Re5 (36...Nf5 37.Nf5 (worse 37.Ne4 Qe7+-) 37...Qf5 38.Kg1+-) 37.Rg1 (better 37.Rf1 Nf5 38.Nf5 Qf5+-) 37...f6 (37...Nf5 38.Nf5 (38.Ne4?! Qe7 39.g4 Ne3 40.Ke3 Re8+-) 38...Qf5 39.Ke1+-) 38.Ne4 (better 38.Ne6 Rf5 39.Ke2 Qg4 40.Ke1+-) 38...Qf5 39.Ra2 (better 39.g4 Qe4 40.Qe4 Re4 41.Ra4+-) 39...Re4 40.g4?? (better 40.Rf1+-) 40...Rf4-+ 41.ef4 (41.Ke1 Qe5 42.Qc1-+) 41...Qf4 42.Ke2 Re8 43.Kd1 Qf3 (better 43...Qd4 44.Kc1 Qg1 45.Kb2 Qd4 46.Qc3 Re2 47.Kb3-+) 44.Kc1 Re1 0-1. ClayPigeons (2125) - joselinarez (2200), Rated Bullet game, lichess.org, 2019.

5.Qb3 Bg7 6.Nf3 Ne7 7.d4 0-0 8.Be2 h6 9.Nc3 f5 10.0-0 e4 11.Nd2 Nf6 12.a4 g5 (12...a5 13.b5+=) 13.Rac1 Ng6 14.g3 (14.a5!?+/-) 14...g4= 15.d5 (15.a5 Be6=) 15...h5 (15...a5 16.b5=) 16.Qc2 (16.c5 dc5 17.bc5 Kh7+=) 16...h4= 17.Nb3 Nh5 18.Nd4 (18.a5 Ne5+=) 18...Qg5 (better 18...a5 19.ba5 Ra5=) 19.Rcd1?? (19.Ncb5 Qd8+=) 19...Bd4?? (19...hg3 20.hg3 Ng3 21.fg3 Qe3 22.Kh1 Bd4 23.Rd4 Qd4 24.Nd1+-) 20.Rd4 (better 20.ed4 Nf6 21.Bc1+=) 20...hg3-+ 21.hg3 Rf7?? (better 21...Ng3 22.fg3 Qe3 23.Kg2 f4 (23...Qd4? 24.Nd1 Qb2 25.Qb2+-) 24.Ne4 f3 25.Bf3 gf3 26.Kh2 a5=+) 22.Kg2+= Rh7 23.Rh1 Bd7 24.Nb5 (24.c5+/-) 24...Kf7 (better 24...f4!? 25.ef4 Ngf4 26.Kg1 Nh3 27.Rh3 gh3-+) 25.Nc7+- Rah8 26.Ne6! Be6 27.de6 Ke7? (better 27...Ke6 28.Qd2 Qd8 29.Bg4 fg4 30.Re4 Kd7 31.Bh8 Qh8+-) 28.Rd6?? (better 28.c5 d5 29.Rd5+-) 28...Nhf4 29.ef4 Rh1 30.Bh8 (30.fg5?? R8h2) 30...Nf4?? (30...Qh5 31.Bf6 Kd6 32.Qd2 Ke6 33.Bh4 Nh4 34.gh4 Rh4 35.Qd5 Kf6 36.Qd6 Kg7 37.Qd4 Kh7 38.Qd7 Kh6 39.Qd6 Qg6 40.Qf8 Qg7 41.Qf5=) 31.gf4 (better 31.Kh1 Qh5 32.Kg1 Kd6 33.Qd1 Nd3 34.Bd3 Ke6 35.Bf1 Qh8 36.Qd5 Ke7 37.Qb7 Ke6 38.Qd5 Ke7 39.Qf5+-) 31...Qh5-/+ 32.Rd7?? (32.Bf6 Kd6 33.Qd2 Ke6 34.Qd5 Kf6 35.Qd6 Kg7 36.Qc7 Kh6 37.Qd6 Kh7 38.Qd7 Kg6 39.Qe6 Kg7 40.Qd7 Kf8 41.Qd8 Kf7 42.Qd7 Kg8 43.Qd8 Kg7 44.Qd7 Kh8 45.Qd8 Kg7 46.Qe7 Kg8 47.Qd8 Kg7=) 32...Ke8 (better 32...Ke6 33.Rd6 Kd6 34.Qd1 Rd1 35.Be5 Ke6 36.Bd1 Qh3 37.Kg1 g3 38.fg3 Qg3 39.Kh1 Qe1 40.Kh2 Qd1-+) 33.Rd8= Ke7 34.Rd7?? (34.Bf6 Ke6 35.Rh8 Rh2 36.Kg1 Rh1 37.Kg2 Rh2 38.Kg3 Rh3 39.Kg2 Rh2=) 34...Ke8 (better 34...Ke6 35.Rd6 Kd6 36.Qd1 Rd1 37.Be5 Ke6 38.Bd1 Qh3 39.Kg1 g3 40.fg3 Qg3 41.Kh1 Qe1 42.Kh2 Qd2 43.Kg3 Qd1-+) 35.Rd8= Kd8?? (better 35...Ke7 36.Bf6 Ke6=) 36.Qd1 (36.Qd2 Ke8 37.Qd7 Kf8 38.Qd8 Qe8 39.Qf6 Kg8 40.Qg7) 36...Ke8 (better 36...Rd1 37.Bf6 Kc8 38.Bd1 Qh3 39.Kg1 g3 40.fg3 Qg3 41.Kh1 Qe1 42.Kg2 Qd1-+) 37.Qh1 (37.Qd7 Kf8 38.Qd8 Qe8 39.Qf6 Kg8 40.Qg7) 37...Kf8 (37...Qh1 38.Kh1 Ke7+-) 38.Qh5 Ke7 39.Qg5 (39.Qf7 Kd6 40.Qd7) 39…Kd6 (39...Kd6 40.Qd8 Kc6 41.Qd7 Kb6 42.Qd6; 39...Ke6 40.Qf6 Kd7 41.Qf7 Kd8 42.Bf6 Kc8 43.Qe8 Kc7 44.Be5 Kb6 45.Qe6) 0-1. ClayPigeons (2190) - showtimeagain (2140), Rated Bullet game, lichess.org, 2020.

5.d4 Bg7 6.de5 Be5 7.Be5 Ne5 8.Nf3 Bg4 9.Be2 Nf6 10.h3 Be6 11.Qc2 0-0 12.0-0 Qe7 13.Nbd2 Rfd8 14.Qc3 Nfd7 15.a4 Qf6 16.Rac1 b6 17.Ne5 Qe5 18.Qc2 c5 19.b5 a6 20.Rfd1 Nf6 21.Nf3 Bf5 22.Ne5 Bc2 23.Rc2 de5 24.Rcd2 Rd2 25.Rd2 ab5 26.ab5 Ra1 27.Rd1 Rd1 28.Bd1 Ne4 29.f3 Nd6 30.Be2 Kg7 31.Kf2 Kf6 32.g4 Ke6 33.Kg3 f5 34.gf5 Nf5 35.Kf2 Kf6 36.Bd3 Kg5 37.Bf1 Kh4 38.f4 e4 39.Bg2 Nd6 40.Bf1 h6 41.Kg2 g5 42.fg5 hg5 43.Kf2 Nf5 44.Bg2= Ng3 45.Ke1 g4 46.hg4 Kg4 47.Kf2 Kh4 48.Ke1 Kg5 49.Kf2 Kg4 50.Ke1 Kf5 51.Bh3 Ke5 52.Kf2 Nh5 53.Bg4 Nf6 54.Kg3 Ne8 55.Be2 Nd6 56.Kf2 Nb7 57.Bf1 Na5 58.Be2 Kf5 59.Bf1 Nb3 60.Bh3 Kg5 61.Bf1 Kh4 62.Bg2 Nd2 63.Ke2? Nc4?? 64.Be4= Kg4 65.Bc6 Kf5 66.Bd5 Nd6 67.Bc6 Ke5 68.Kd3 Kf5 69.e4 Ke5 70.Ke3 c4 71.Bd5 c3 72.Bc6 c2 73.Kd2 Ne4 74.Kc2 Nd6 75.Kc3 ½–½. Hungeling,Roland (1710) – Luszczynski,Josef, Steinfurt Bezirksklasse, 2008.

5.d4 Bg7 6.Nf3 b6 7.Qb3 Bb7 8.Be2 e4 9.Nfd2 Qg5 10.0-0 Nh6 11.Nc3 f5 12.Nb5 Qd8 13.d5 Ne5. Bryck – Hadden.

5.d4 Bg7 6.Nf3 e4 7.Nfd2 f5 8.Nc3 Ngf6 9.Be2 0-0 10.0-0 Nb6 11.a4 Bd7 12.a5+/- Nc8 13.a6 b6 14.b5 c6 15.bc6 Bc6 16.Qb3 Kh8 17.Rac1 Ne7 18.Ba3 d5? 19.cd5+- Bd5? 20.Be7 Bb3 21.Bd8 (21.Bd8 Rfd8 22.Nb3+-) 1–0. Clay56 – marnzell, ChessWorld.net, 2011.

5.d4 Bg7 6.Nf3 Ne7 7.Be2 0-0 8.0-0 h6 9.Qc2 f5 10.Nc3 e4 11.Nd2 Nf6 12.Rac1 g5 (12...Be6 13.f3 ef3 14.Rf3+= (worse 14.gf3 f4=+)) 13.Rfd1 Ng6 14.a4 g4 15.Qb3 (15.a5+/-) 15...Nh5 (15...Re8 16.a5+=) 16.Nd5 (16.c5!? Kh7 17.cd6 cd6 18.Nb5+/-) 16...c6 17.Nf4 (better 17.Nc3+/-) 17...Nhf4-/+ 18.ef4 Nf4 19.Bf1 d5 20.g3 (20.cd5 cd5 (20...Qd5?? 21.Bc4+-) 21.Rc5 b6-/+) 20...Nh3 (20...Ne6!?-+) 21.Bh3-/+ gh3 22.cd5 cd5 23.Rc5 Be6 24.Rdc1 f4 (better 24...Rf7!?-/+) 25.Ne4= Kh8 26.Nd2 fg3 27.Qg3 (27.fg3 Qg5 28.Nf3 Qf5=) 27...Qf6 28.Rf1? (better 28.Rc7 Rg8 29.Kh1= (29.Rb7?? Bf8-+)) 28...Rg8-/+ 29.Kh1 Bf8 30.Qf3? (30.Qe5 Qe5 31.de5 Bc5 32.bc5 Raf8-+) 30...Qf3 (better 30...Qg5 31.Rfc1 Qd2-+) 31.Nf3-/+ Bc5 32.dc5 Kh7 33.Ne5 (33.Nd4 Bg4-/+) 33...Bf5 (better 33...Raf8 34.b5 Rf4-+) 34.f4?? (better 34.b5-/+) 34...Be4-+ 35.Nf3 Rg2 36.Be5 (36.Bf6 Rag8 37.Bg5 hg5 38.c6 gf4 39.Ra1 Bf3 40.cb7 Re2) 36...Rag8 37.Bd4 Bf3 (37...Rd2! 38.Bc3 Bf3 39.Rf3 Rd1 40.Be1 Re1 41.Rf1 Rf1) 38.Rf3-+ Rd2 39.Rf1 (39.Bg1 Rd1 40.Rg3-+) 39...Rd4 40.b5 (40.f5-+) 40...Rd2 41.f5 (41.Rb1 Rgg2 42.c6 Rh2 43.Kg1 Rdg2 44.Kf1 Rh1) 41...Rgg2 42.f6 (42.Re1 Rh2 43.Kg1 Rdg2 44.Kf1 Rh1) 42...Rh2 43.Kg1 Rdg2 0-1. ClayPigeons (2175) - showtimeagain (2155), Rated Bullet game, lichess.org, 2020.

5.f4 Bg7 6.Nf3 f5 7.Be2 Qe7 8.0-0 (8.Nc3 Nb6 9.fe5 de5+=) 8...e4 9.Bg7 Qg7 10.Nd4 Ndf6 (10...c5 11.bc5 dc5 12.Nb3=) 11.Nc3+= c6 12.b5 Bd7 13.a4 Ne7 14.Qb3 (14.a5 0-0+=) 14...h6 (14...c5 15.Nc2=) 15.bc6+= bc6 16.Qb7 0-0 17.Rfb1 (17.Qc7 c5 18.Ndb5 Bb5 19.ab5 Nc8 20.Qg7 Kg7+=) 17...g5 (17...Rfd8 18.Ra2+=) 18.Qc7 (18.fg5!? Qg5 19.Ne6 Be6 20.Qe7=) 18...gf4+= 19.Qd6 (19.ef4 Ng6 20.Qd6 Ne8+=) 19...f3= 20.Bf1 Kh8 (20...Rad8 21.c5=) 21.Rb7 (21.g3 Rad8+=) 21...Rad8 (21...fg2 22.Be2 (worse 22.Bg2 Rg8 23.Qg3 Qg3 24.hg3 Rg3-/+) 22...Rad8 23.Qg3=) 22.Ra7 (22.Qg3 Rg8 23.Ra7 Qg3 24.hg3 Rg3+=) 22...Rg8 (better 22...Nc8!? 23.Rd7 Rd7= (worse 23...Nd6 24.Rg7 Kg7 25.Ne6 Kf7 26.Nf8+/-; 23...Nd7?! 24.Qc7 fg2 25.Be2=+)) 23.g3+= h5 (23...Nc8!? 24.Rd7 Rd7 25.Qc6 Ne7+=) 24.Qf4+/- Ng6 25.Qg5 h4? (25...Nh7 26.Qh5 Nf4 27.Qf5 Bf5 28.Rg7 Rg7 29.Nf5+-) 26.gh4?? (better 26.Nf5 Qf8 27.Nh4+-) 26...Nh7 27.Qg3 Qh6 (27...f4 28.Qf2 fe3 29.de3=+) 28.Rd7 (better 28.Kh1!?+/-) 28...Rd7= 29.Nf5 Qh5 30.Bh3?? (better 30.Kh1 Qf5 31.Bh3+=) 30...Ne5-+ 31.Ne4 Rg3 32.Neg3 Qf7 33.Nh6? (33.d4 Nc4 34.a5-+) 33...Qe8 (better 33...f2 34.Kh1 Qf6-+) 34.Bd7-/+ Qd7 35.d4 Qh3 36.Ra2 Ng4 (36...Nc4 37.Nhf5-/+) 37.Nhf5? (better 37.Ng4!? Qg4 38.a5=+) 37...f2-/+ 38.Rf2 Nf2 39.Kf2 Qh2 40.Kf3 Nf6 41.Kf4? (better 41.e4!?-/+) 41…Qf2 (41...Qf2 42.Kg5 Nh7 43.Kg6 Qc2-+) 0-1. zembelek (2085) - profit (2155), Rated Blitz game, lichess.org, 2014.

5.g3 Bg7 6.Bg2 Ne7 7.Ne2 0-0 8.0-0 f5 9.f4 Nc6 10.Qb3 Kh8 11.a4 a5 12.b5 Nc5 13.Qa3 Nb4 14.d4 Ncd3 15.Rd1 e4=+ 16.Rd2 c6 17.Nbc3 Be6–/+ 18.c5 Rc8 19.Rad1 Bc4 20.Ba1 Qe7 21.cd6 Qe6 22.d7 Qd7 23.bc6 Qc6 24.Nc1 Qe6 25.Nb5 Rfd8 26.Bc3 b6 27.Nd3 Nd3 28.d5 Rd5 29.Bg7 Kg7 30.Nd4 Qf7 31.Qc3 Kg8 32.Rd3 Ba6 33.Nc6 Rd3 34.Rd3 ed3 35.Ne7= Qe7 36.Bd5 Qf7 37.Bf7 Kf7 38.Qb3 Kg7 39.Qb6 Rc1 ½–½. De Visser,Arno – Sekano, 1993.

6.d4 Ne7 7.Nf3 0-0 8.Be2 f5 (8...Nc6 9.Nd5=) 9.de5 (9.0-0 a5 10.b5 f4+/-) 9...de5 (9...Ne5 10.Qb3+=) 10.0-0 (10.Ng5 Nf6 11.Qb3 h6+/-) 10...h6 (10...c5 11.Qd6 cb4 12.Qb4+=) 11.c5 Kh7 12.Bc4 (12.h3!?+/-) 12...e4= 13.Nd4 Ne5 14.Qb3 N7c6 (14...Nc4 15.Qc4 Nc6 16.Nce2=) 15.Nce2 (15.Nc6 bc6 16.Ne2 Qe7 17.Be5 Be5+=) 15...Nc4 (15...Qg5 16.Nc6 Nf3 17.Kh1=) 16.Nc6 bc6 17.Bg7 Nd2 18.Qc3 Nf1 19.Bf8 Qf8 20.Kf1 (20.Rf1 Be6 21.a3 Qh8+=) 20...Ba6= 21.Ke1 Be2 22.Ke2 Rd8 23.Rd1 Rd1 24.Kd1 Qf7 25.Qe5 g5 (25...Qa2 26.Qc7 Kg8 27.Qc6 Qb3 28.Ke2 Qb2 29.Kf1 Qc1 30.Ke2 Qb2 31.Kf1 Qc1 32.Ke2 Qb2=) 26.g4+= Qd5?? (26...fg4 27.Qe4) 27.Qd5+- cd5 28.b5 (28.a4!? Kg7 29.b5 fg4+-) 28...f4 (28...d4 29.ed4 Kg6+-) 29.a4 1–0. Gimeno Higueras,R (2115) – Gallardo De La Torre,Y (2025), 6th Cullera op, 2005.

6.d4 Ngf6 7.d5 0-0 8.Nf3 a6 9.Be2 Nh5 10.g4 Nhf6 11.h3 Ne8 12.Qc2 f5 13.gf5 Rf5 14.e4 Rf8 15.Bc1 Ndf6 16.Bg5 Qd7 17.Nd2 Qf7 18.0-0-0 a5 19.b5 Bd7 20.Be3 c6 21.dc6 bc6 22.Na4 cb5 23.Nb6 Rb8 24.cb5 Be6 25.Kb1 Qb7 26.a4 d5 27.ed5 Nd5 28.Nd5 Bd5 29.Bc4 Nf6 30.Ne4 Kh8 31.Nd6 Qa8 32.Rhg1 Bf3 33.Rd2 Ne4–/+ 34.Ne4 Be4 35.Bd3 Bd3 36.Rd3 Rbc8 37.Rc3 Rc3 38.Qc3 Qe4 39.Qc2 Qb4 40.Ka2 Rd8 41.Rb1 Qd6 42.b6 Qd5 43.Qb3 Qb7 44.Rc1 Rd7 45.Qc4 h6?? 46.Qc8+- Qc8 47.Rc8 Kh7 48.Rc7 Rd8 49.b7 (49.b7 Rb8 50.Ba7 Rb7 51.Rb7+-) 1–0. Garcia Roman,J (2000) – Riera Torres,Diana, XIII Open, Malaga ESP, 2010.

6.Be2 a5 7.a3 f5 8.Nf3 Ngf6 9.Qb3 c6 10.Ng5 Qe7 11.0-0 h6 12.Nf3 g5 Black prepares the advance f4 13.d4 e4 14.Nd2 0-0 15.Rac1 f4 16.Rce1 ab4 17.ab4 Kh8 (17...fe3 18.fe3 Nb6 19.Rf2+/-) 18.f3 (18.ef4 e3 19.Bf3 ef2 20.Kf2 Ng4 21.Bg4 Bd4 22.Kg3 gf4 23.Kh3+=) 18...ef3 19.Bf3 fe3 20.Nde4?? (better 20.Nd1+/-) 20...g4-+ 21.Nf6 gf3 (21...Nf6?! 22.Be2=+; 21...Bf6 22.Bg4 Bh4 23.Re2 Bf2 24.Kh1-/+) 22.Rf3 Nf6 (22...Rf6?! 23.Rfe3 Qf7 24.Ne4-/+) 23.Ree3 Qf7 24.d5 Bg4 25.Rf2 Qg6 26.h3 Bf5 27.Ne2 Rae8 (better 27...Ne4 28.Bg7 Kg7-+ (28...Qg7?! 29.Rf5 Rf5 30.Re4-/+)) 28.Rg3=+ Qh7 29.dc6 bc6 30.Nd4?? (better 30.Qd1-/+) 30...Bd7 31.c5?? (31.Rgf3 Re1 32.Rf1 Rf1 33.Rf1 Qe4-+) 31...dc5 (better 31...Re1!? 32.Kh2 Ng4 33.hg4 Rf2 34.Bc3-+) 32.bc5?? (32.Nc2 Bf5-+) 32...Rb8 (better 32...Re1 33.Kh2 Qb1 34.Rg7 Rh1 35.Kg3 Bh3-+) 33.Qd1 Ne4?? (33...Qe4 34.Re2 Qf4 35.Rf3-+) 34.Rf8?? (better 34.Rg7 Qg7 35.Ne6 Be6 36.Bg7 Kg7 37.Re2+=) 34...Rf8-+ 35.Re3? (better 35.Ne6 Bb2 36.Nf8-+) 35...Nf6 (better 35...Rf2!? 36.Ne2 Bb2 37.Qa4-+) 36.Nf3? (better 36.Ne6 Be6 37.Re6-/+) 36...Nd5-+ 37.Bg7? (37.Rb3 Bb2 38.Rb2-+) 37...Qg7 38.Rd3 (38.Ra3 Nf4 39.Qa1 Nh3 40.Kh2 Nf2-+) 38...Bh3 39.Qd2 (39.Nh4 Bg4 40.Qe1 Nf4-+) 39...Bf5 (better 39...Bg2 40.Qg2 Qg2 41.Kg2 Nf4 42.Kf2 Nd3 43.Ke3 Rf3 44.Kf3 Nc5-+) 40.Rd4 Bg4 41.Nh4 Rf6 (41...Kg8 42.Rc4-+) 42.Kh2 Be6 43.Nf3 Rg6 44.Re4 Qc7 45.Kh1 Qg3 46.Re2 (46.Ra4 Rf6-+) 46...Kh7 47.Qc2 (47.Ne5 Rg5 48.Qd3 Qd3 49.Nd3 Bf5-+) 47...Bh3! 48.Ne5 (48.gh3 Nf4 Double attack (48...Qf3 Deflection; 48...Nf4 Decoy)) 48...Bg2! 49.Rg2 Qe1 50.Kh2 Qe5 51.Kh1 (51.Kg1 Qg7 52.Qe4 Nf4-+) 51...Qe1 (better 51...Qh5 52.Kg1 Nf4-+) 52.Kh2 Qh4 53.Kg1 Qf6 54.Rg6 (54.Qa2-+) 54...Qg6 55.Qg6 Kg6 56.Kf2 Nc7 57.Ke2 Ne6 58.Kd3 h5 59.Ke4 h4 60.Ke5 Nc5 61.Kf4 h3 62.Kg4 (62.Kg3 Nd3 63.Kh2 c5 64.Kg1 h2 65.Kg2 c4 66.Kh1 Nf2 67.Kh2 c3 68.Kg3 Ng4 69.Kf3 c2 70.Ke4 c1Q 71.Kd5 Nf6 72.Ke6 Qd2 73.Ke5 Kg5 74.Ke6 Qd7 75.Ke5 Qd5) 62…Ne4 (62...Ne4 63.Kf4 h2 64.Ke4 h1Q 65.Kf4 Qf1 66.Ke4 Qb1 67.Kd4 Qc2 68.Ke3 Qc3 69.Ke2 c5 70.Kf2 Qe5 71.Kf3 c4 72.Kf2 c3 73.Kf3 Qg5 74.Ke2 c2 75.Kd3 c1Q 76.Kd4 Qce3 77.Kc4 Qgc5; 62...h2 63.Kg3 h1Q 64.Kf4 Qf1 65.Ke3 Qd3 66.Kf4 Ne6 67.Kg4 Nd4 68.Kf4 Nf5 69.Kg4 Qg3) 0-1. carlos78 (2400) - hiimgosu (2660), Rated Blitz game, lichess.org, 2015.

6.Nf3 Ndf6 7.Bd3 Ne7= 8.0-0 b6 9.Ng5 Bb7 10.Qa4 Bc6 11.b5 Bb7 12.f4 Nd7 13.Be4 Nc5 14.Qc2 Ne4 15.Nce4 0-0 16.a4 h6 17.Nf3 f5 18.Ng3 ef4 19.Bg7+= Kg7 20.ef4 Bf3 21.Qc3 Kh7+= 22.Rf3 Ng8 23.Re1+/- Rf7 24.Rfe3 Qh4 25.Qd4 Nf6 26.Re7 Raf8? 27.Nf5!+- gf5 28.g3 Qg4 29.Qf6 Qg6 30.Qg6 Kg6 31.R1e6 Kg7 32.Kf2 Re7 33.Re7 Rf7 34.Rf7 Kf7 35.h3 h5 36.g4! hg4 37.hg4 fg4 38.Kg3 1–0. pierre – regar, internet, 2009.

6.g3 Ne7 7.Nge2 (7.g4 Nf6 8.h3 h5 9.gh5 Rh5=) 7...f5 (7...Nb6 8.c5 dc5 9.bc5+=) 8.Bg2 (8.d4 ed4 9.Nd4 Bd4 10.Qd4 Ne5+=) 8...0-0 (8...e4 9.Nc1=) 9.0-0 (9.d3 a5 10.b5 Qe8=) 9...c6 Controls b5+d5 (9...e4 10.d4=) 10.d4 (10.d3 Qb6 11.Qb3 c5+=) 10...Qc7 (10...Nb6 11.c5 dc5 12.bc5+=) 11.Rc1 Nf6 (11...e4 12.Nf4 Nf6 13.Ba1+=) 12.a4 (12.d5 cd5 13.Bd5 Nfd5 14.cd5 a5+=) 12...Be6 (12...a6 13.a5+=) 13.de5 (13.Nb1 Bf7=) 13...de5= 14.Nb1 Rad8 (14...Kh8 15.Qb3=) 15.Nd2 (15.Qc2 Kh8=) 15...Rd3 (15...Qd6 16.Bc3 Rd7 17.Qb3=) 16.Qc2= Rfd8 (16...Rd7 17.Nf3 Ng4 18.h3+=) 17.Nf3 Ne4 18.Rcd1 (better is 18.Bd4! and White could well hope to play on 18...Ra3 19.Ne5 (19.Ba7?? taking the pawn is naive 19...b6-+) 19...Be5 20.Be4 Bd4 21.Nd4 Rd4 22.ed4 fe4 23.Qe4+=) 18...Rd1–/+ 19.Rd1 Rd1 20.Qd1 Bc4 21.Qc2 b5 22.ab5 cb5 23.Nc3 Nc3 (23...Nd6 24.Nd2 Bf7 25.e4–/+) 24.Bc3 (24.Qc3 Nd5 25.Qa3 Nb6–/+) 24...Nd5 25.Bd2 (25.Nd2 Nc3 26.Qc3 e4–/+) 25...Qd6 (25...e4 26.Ne1 Qc6-+) 26.Qb1? (26.e4 Nb4 27.Bb4 Qb4 28.ef5 Qa4–/+) 26...Nb6 27.e4 Qd3 28.Qd3+= Bd3 29.ef5 gf5 A minor pieces endgame occured 30.Ne1 Begins the manoeuvre Nf3–e1–c2–e3–f5–d4–c6–a5. 30...Bc4 31.Nc2 Bb3 32.Ne3 f4 33.gf4= ef4 34.Nf5 Bf8 35.Nd4 Bc4 36.Bc6 a6 37.Bb7 Bg7 38.Nc6 Nd5 39.Ba6 Kf7 40.Na5 Bd3 41.Bb7 Nc3 42.Bf4?? Ne2-+ 43.Kg2 Nf4 44.Kf3 Ne6 45.Ke3 Bf1 46.Be4 Bd4 47.Kd2 h6 48.Ke1 Bh3 49.Nc6 Bc3 50.Ke2 Nf4 51.Ke3 Ne6 52.f4? Kf6-+ 53.Na7?? the position was bad, and this mistake simply hastens the end (better is 53.Bd5-+) 53…Bd4 (53...Bd4 54.Kf3 Ba7-+) 0–1. Wuerschinger,Wolfgang (1750) – Hicker,Harald (2120), Faakersee op, 2002.

6.g3 Ndf6 7.Qb3=.

6.Qb3 Ne7 7.Nc3 0-0 8.Be2 c6 (8...a5 9.a3=) 9.0-0 Kh8 (9...a5 10.a3=) 10.d4+= f5 11.de5 de5 12.Rfd1 Qc7 13.Rac1 Nf6 14.b5 Be6 (14...e4 15.Ng5+=) 15.Ba3 (15.Ne5 Qe5 16.Nd5 Qb8 17.Ne7 Rf7+=) 15...Rfd8+= 16.h3 (16.Ne5!? Ne4 17.f4+/-) 16...Nfg8?? (better 16...c5=) 17.Ng5+- 1-0. carlos78 (2280) - Buhovisk (2245), Rated Blitz game, lichess.org, 2016.

6.Qb3 Ne7 7.Be2 0-0 8.d4 b6 9.0-0+= ed4 10.Nd4 c5 11.Bf3 Rb8 12.Nb5 Bb2 13.Qb2 Ne5 14.Be2 a6 15.N5c3 Be6 16.Nd2 cb4 17.Qb4 N7c6 18.Qa4 Na5 19.h3 Qc8 20.Nd5= Qd8 21.e4 Bd5 22.cd5+= b5 23.Qa3 Qb6 24.Kh1 Nec4 25.Nc4 Nc4 26.Bc4 bc4 27.Rab1 Qb1=+ 28.Rb1 Rb1 29.Kh2 Rb6 30.Qc3 Rc8 31.f4 a5 32.e5 de5 33.fe5= Rc5?? 34.Qd4 Rbb5 35.d6 Re5? 36.Qc4 Rbc5= 37.Qa6 Re8?? 38.Qb6 Rd5 39.Qc6 Ree5 40.d7 1–0. Hoelldorfer,August – Froeling,Philippa, Bayern–ch Seniors, 1999.

6.Qc2 c6 7.d4 Qe7 8.Nbd2 f5 9.g3 Ngf6 10.de5 de5 11.c5 e4 12.Nd4 Ne5 13.Nc4 Nd5 14.Nd6+= Kf8 15.a3 Rb8 16.Be2 h5 17.h4 a6 18.Rd1 Bd7 19.Nc4 Ng4 20.Bg4 hg4+= 21.Ke2 Be8 22.h5 Kg8 23.Nd6 Qd7 24.hg6 Bg6 25.Rh8 Bh8 26.Rh1 Bf6 27.Nb3 b5 28.Bf6 Nf6 29.Qb2 Qe6? 30.Nd4 Qe5 31.Qb3 Nd5?? 32.Nc6 (32.Nc6 Qe6 33.Qb2+- (33.Nb8 Nf4 34.gf4 Qb3-+)) 1–0. Kunic,Mehmedalija – Johnsen,Sy (2080), 34th Norwegian Open, Oslo NOR (6), 2003.

6.Nc3 a5 7.b5 =.

6.Nc3 f5 7.d4 (7.Be2 a5 8.Qa4 Ngf6=) 7...e4 (7...Ngf6 8.Be2+=) 8.Ng1 (8.Nd2 Ngf6+=) 8...Ngf6 (8...a5 9.a3=) 9.h4 (9.Nge2 0-0=) 9...0-0 (9...Nb6 10.Nh3=) 10.Nh3 Nh5 (10...a5 11.b5=) 11.Nd5 (11.Be2 Ndf6=) 11…c6 (11...Ndf6 12.Nf6 Qf6 13.Qd2=) ½–½. Fabisch,Christian (2135) – Siklosi,Zoltan (2395), AUT–chT2S, 1997.

6.d3 Ne7 7.g3 0-0 8.Bg2 (8.a3 a5+=) 8...f5 (8...e4 9.Bg7 ef3 10.Bf8 fg2–/+ (10...Nf8? 11.Bf3 a5 12.b5+-)) 9.0-0 c6 10.Nbd2 Nf6 11.a3 a6 12.Qe2 Bd7 13.d4 e4 14.Nh4?? (14.Ne1 d5=) 14...Bc8?? (14...g5!? 15.Nhf3 ef3 16.Nf3 Ne4-+) 15.f3 (better is 15.Bh1!?=) 15...g5–/+ 16.fe4 (16.Nf5!? Bf5 17.Ne4–/+) 16...gh4-+ 17.ef5 Nf5 18.e4 Nh6 19.e5 Nfg4 (19...de5 20.de5 Re8 21.Rad1-+) 20.ed6 (20.Rf8 Qf8 21.h3 de5 22.de5 hg3 23.hg4 Qf2 24.Qf2 gf2 25.Kf2 Ng4 26.Kg3 Ne5+= (worse is 26...Be5 27.Be5 Ne5 28.Re1=)) 20...Qd6 21.d5?? (21.Rf8 Qf8 22.h3–/+) 21…Bb2-+ (21...Bb2 22.Ne4 Rf1 23.Rf1 Qe5 24.dc6 bc6-+) 0–1. Fournier,Frederic (2235) – ganadornato (2380), Active (1/0), 2002.

6.d4 Ne7 7.Nbd2 0-0 8.Be2 c6 (8...ed4 9.Bd4 (9.Nd4? c5-+) 9...Ne5 10.Ne5 de5 11.Bc3=) 9.0-0+= a5 10.a3 h6 (10...f5 11.c5 e4 12.cd6+=) 11.Ne4 Qc7 12.de5 (12.c5 d5 13.Nd6 e4+=) 12...de5 (12...Ne5 13.Ne5 Be5 14.Be5 de5 15.Qd6 Qd6 16.Nd6=) 13.Nd6 Rd8 14.c5 ab4 (better 14...e4!? 15.Nd4 Be5+=) 15.ab4+- Ra1 16.Qa1 (16.Ba1?! Nf5+/-) 16...Nd5 (16...f6 17.Qa2 Kh7 18.Qf7+-) 17.Bc4 b6 (17...N7b6 18.Bb3 (18.cb6?! Qd6 19.Be5 Be5 20.Ne5 Re8 21.Bd5 cd5+=) 18...Rd6 19.cd6 Qd6 20.b5+-) 18.Ne5 bc5 (better 18...Be5 19.Be5 Ne5 20.Qe5 Be6+-) 19.Nef7 N7b6 1-0. OnlyPolishOpening (2090) - bilancia (2175), lichess.org, 2020.

6.d4 Ne7 7.Be2 0-0 8.Nc3 c6 9.a4 (9.0-0 ed4 10.Nd4 c5=) 9...d5 (9...ed4 10.ed4 a5 11.b5=) 10.Qb3 (10.0-0 dc4 11.Bc4 Nf5=) 10...dc4 11.Bc4 ed4 12.ed4 (12.Nd4!? Bd4 13.ed4=) 12...Nb6=+ 13.Be2 Nf5 Increasing the pressure on the isolated pawn on d4 14.0-0-0 (14.Rd1!?-/+) 14...Be6-+ (14...Nd4?! 15.Rd4 Bd4 16.Rd1+=; 14...Bd4 15.g4 Be6 16.Qa3+/-) 15.Qc2 (better 15.Qa3-+) 15...Nd4?? (better 15...Qd6!? 16.g4 Ne7-+) 16.Nd4 (16.Rd4 Bd4 17.Rd1 Bf5+= (17...Bf2? 18.Rd8 Rad8 19.Nd1+-)) 16...Bd4=+ 17.Qe4 (better 17.a5 Qg5 18.Qd2 Qd2 19.Rd2 Bc3 20.Bc3=+) 17...Qg5?? (better 17...Bc3 18.Rd8 Bb2 19.Kb2 Rad8=+) 18.f4+- Qf5 (18...Be3 19.Qe3 Qg2+-) 19.Qf5?? (19.Qd4 Bb3 20.Bd3+-) 19...Be3-/+ (19...gf5?? 20.Rd4 Rfe8 21.a5+-) 20.Kc2 Bf5 (20...gf5?! 21.g3=) 21.Kb3 (21.Bd3 Bd3 22.Rd3 Bf4-/+) 21...Be6 (21...Bf4 22.a5 Be6 23.Ka3-+) 22.Ka3-/+ Nc4 (22...Nd5 23.Ne4 Bf5-/+ (23...Nf4?! 24.Nf6 Kg7 25.Nh5 Kg8 26.Nf6 Kg7 27.Nh5 Kg8 28.Nf6=; 23...Bf4 24.Rd5 f5 25.Rd7 Bd7 26.Bc4 Rf7 27.Nf6 Kf8 28.Bf7 Kf7 29.Nd7+/-)) 23.Bc4= Bc4 24.Rhe1 (better 24.Ne4 f5 25.Rd7=) 24...Bf4?? (24...Rfe8 25.Bc1 Bc1 26.Rc1-/+) 25.Rd7?? (25.Rd4 Bh2 26.Rc4 Rfd8+/-) 25...b6?? (better 25...Be6!? 26.Rb7 Bc8-/+) 26.Ne4 (26.Rd4 Bd5 27.Nd5 cd5 28.Rf4 Rae8+-) 26...f6? (better 26...g5=) 27.Nf6+- Rf6 28.Bf6 Bd5 29.Ree7 (29.Rg7 Kf8 30.Rf1 g5+-) 29...Bh6 (better 29...h5+-) 30.Rh7 Be6 (30...Bc1 31.Bb2 Bb2 32.Kb2 a5+-) 31.Rh8 1-0. ClayPigeons (2095) - GreenSaint (2155), Rated Bullet game, lichess.org, 2020.

6.d4 Ne7 7.de5 Nc6 8.Qb3 Nde5 9.Nbd2 0-0 10.Be2 Re8 11.0-0 Qe7 12.Rac1 Be6 13.Nd4 a5 14.b5 Nd4 15.ed4 Ng4 16.Qg3 Nf6 17.Bd3 Bh6 18.f4 Nh5 19.Qe3 Qh4 20.g3+= Qh3 21.Qf3 Bg4=+ 22.Qg2 Qg2 23.Kg2= Be2 24.Be2 Re2 25.Rf2 Rae8 26.Kf1 R2e3 27.Bc3 Nf6 28.Ba5 Ng4–/+ 29.Rg2 Ra3 30.Nb3 Ne3-+ 31.Kg1 Ng2 32.Kg2 Ra2 33.Kf3 Rae2 34.Rc3 b6 0–1. Fletcher,JE – Lodge,David Wilfred, corr BCCA, 1967.

6.Be2 Ne7 7.0-0 0-0 8.d4 c5 9.bc5 dc5 10.Ne5 cd4 11.Nd7 Qd7 12.Bd4 Nf5 13.Bg7 Ng7 14.Nc3 Qc7 15.Nd5 Qc5 16.Rb1 f5 17.Qd4 Qd4 18.ed4 b6 19.Bf3 Rb8 20.Ne7 Kh8 21.Rfe1 Bd7 22.Re5 Ne6 23.Bc6 Rbe8 24.Bd7 (24.Bd7 Re7 25.Be6+- (25.Re6?! Rd7 26.c5 Rd4+/-)) 1–0. Kamminga,G – Planke,G, corr NLD–FIN, 1994.

6.Be2 Ne7 7.Nc3 0-0 8.a4 (8.0-0 a5 9.b5 Nb6=) 8...f5 (8...e4 9.Ng5=) 9.Qb3 Kh8 (9...e4 10.c5 Kh8 11.cd6 cd6 12.Nd4=) 10.h4 (10.d4 a5 11.b5 Rb8+=) 10...h6 (10...a5 11.ba5 Nc5 12.Qc2+=) 11.Ng5 (11.d4 a5=) 11...Nf6 12.Nh3 Be6 13.f4 Nh5 14.Bh5 gh5 15.Ne2 Nc6 16.Nf2 Qe7 17.Rc1 a6 18.Ng3 b5 19.Nh5 bc4 20.Qc3 (20.Qa3 Kg8=) 20...Rab8+= 21.Ng7 (21.Nd3 Kg8–/+) 21...Qg7–/+ (21...Kg7 22.fe5 Ne5 23.d4 cd3 24.Nd3+/- (worse is 24.Qc7 Qc7 25.Rc7 Kg8=)) 22.fe5 Rb4 23.Rb1 (23.a5!?–/+) 23...de5-+ (23...Qe5?? 24.Qb4 Nb4 25.Be5 de5 26.Rb4+-) 24.Ke2 Rb3 25.Qc2 Nb4 26.Qc1 Nd3 (26...f4!? 27.Be5 Qe5 28.Rb3 cb3 29.e4-+) 27.Nd3 cd3 (worse is 27...Rd3 28.Rf1 Qg2 29.Rf2-+) 28.Kf2 Rg8 (better is 28...f4 29.ef4 Rf4 30.Kg1 Bd5-+ (30...Ra4?! 31.Qc6 Bd7 32.Qc7-+)) 29.Qc6?? (29.Rh2-+) 29...Qg3 30.Kf1 Rb6 (30...Rb2 31.Rb2 e4 32.Qc3 Rg7 33.Rb8 Kh7 34.Qg7 Kg7 35.Rh3-+) 31.Qf3 Qf3 32.gf3 Kh7 33.Rg1 (33.a5 Rb5 34.Rg1 Rg1 35.Kg1 Ba2-+ (35...Ra5?! 36.Rc1–/+)) 33...Rgb8 (33...Rg1 34.Kg1 Ba2 35.Rc1 Rb2 36.Rc7 Kg6 37.Ra7-+) 34.Rc1 Rb2 35.Rc7 Kh8 36.Rg6 Bf7! 37.Rf7 (37.Rh6 Kg7 38.Ra6 Rd2 39.Rc1-+) 37...Rd2 (37...Rd2 38.Rh6 Kg8 39.Rf8 Rf8 40.Rg6 Kh7-+) 0–1. Kuehnemund,Lutz (2130) – Vogel,Robert (2280), 9th Berlin Germany, Lichtenberger Somme, 2010.

6.Be2 Ne7 7.d4 ed4 8.ed4 d5 9.c5 0-0 10.0-0 b6 11.Qc2 bc5 12.bc5 c6 13.Nbd2 Qc7 14.Rfe1 Nf6 15.Bd3 Nf5 16.Re2 Re8 17.Re8 Ne8 18.Re1 Kf8 19.Nf1 Nf6 20.Ne3 Ne3 21.Re3 Ng4 22.Re1 Bd7 23.h3 Nh6 24.Bc3 Rb8 25.Qd2 Bf5 26.Ba6 Re8 27.Ne5+- Re6 28.Ba5 Qe7 29.Nc6! (29.Nc6 Qd7 30.Re6 Qe6 31.Bb7+-) 1–0. Kleinke,Uwe – Henck, corr, 1982.

6.Be2 f5 7.d3 Ngf6 8.Nbd2 0-0 9.0-0 b6 10.a4 Bb7 11.Qc2 Kh8 12.h3 Re8 13.Rfd1 Qe7 14.Re1 e4 15.de4 Ne4 (15...fe4 16.Nd4=) 16.Ne4 Bb2?? (better is 16...fe4 17.Bg7 Kg7=) 17.Qb2+- Qg7 18.Qg7 Kg7 19.Ned2 Re6 (19...a5 20.b5+-) 20.Nd4 Re5 (20...Re7 21.b5+-) 21.N2f3 Re4 22.Bd3 Ree8 23.Ng5 Ne5 24.Be2 c5 25.bc5 dc5 26.Ndf3 Nc6 27.h4 h6 28.Nh3 Ne7 29.Nf4 g5 30.hg5 hg5 31.Ng5 Kf6 32.Nf3 Rg8 33.Red1 Rad8 34.Rd8 Rd8 35.Rd1 Rd1 36.Bd1 Nc6 37.Nd3 Na5 38.g3 Nc4 39.Kg2 Nb2?? 40.Nb2 c4 41.Nc4 Bf3 42.Bf3 1–0. Fournier,Frederic (1850) – arcoirisiris (1865), Active (5/0), 2005.

6.Be2 Ngf6 7.d4 Qe7 (7...a5 8.Qa4=) 8.Nc3 0-0 9.Qb3 (9.0-0 ed4 10.ed4 d5+=) 9...Re8 (9...a5 10.ba5 Ra5 11.0-0=) 10.a4 (10.0-0 a5=) 10...e4 (10...ed4 11.ed4 a5 12.b5=) 11.Nd2 h5 (11...a5 12.b5=) 12.h3 (12.0-0 a5+=) 12...Nf8 (12...a5 13.b5+=) 13.a5 c6 14.b5 (14.0-0 N8d7+=) 14...Ne6 (14...cb5 15.Qb5 Bf5 16.g4 hg4 17.hg4 Ng4 18.Bg4 Bg4 19.Nce4+/- (< 19.Nde4 Bf3 20.Ng3 Bh1 21.Nh1 Bd4–/+)) 15.Na4 c5 16.d5+= Ng5 17.b6 a6 18.0-0-0 h4 19.Kb1 Bf5 20.Ka2 Nd7 21.Nc3 Ne5 22.Rdg1 Nd7 23.Bd1 Nf6= 24.Bc2 Nh5 25.Ba1 Be5 26.Re1 Qf8 27.f4+= ef3 28.gf3 Bc2 29.Qc2 Bg7 30.f4 Nh7 31.Nf3 Qe7 32.Rhg1 Ng3 33.e4 Nf6 34.Nh4+- Nfe4? 35.Ne4 Qh4+/- 36.Bg7 Ne4+= 37.Bb2 Qf4 38.Rg4 Qd2 39.Rge4 Qa5 40.Kb1 Qe1 41.Re1 Re1 42.Ka2 Rae8 43.Qf2 (43…R1e2 44.Qf6+-) 1–0. Alekseev,Vadim (2355) – Komliakov,Viktor (2500), Petrov mem St Petersburg, 1996.

6.Be2 Nh6 7.d4 0-0 8.0-0 e4 9.Nfd2 f5 10.Qb3 Nf6 11.Nc3 Kh8 12.Nd5 Ne8 13.b5 Be6 14.Nb4 Qh4 15.f3 Nf6 16.a4 Rae8 17.a5 Bd7 18.f4 Nh5 19.Rf2 Ng4 20.g3 Ng3 21.Bg4+/- Nh1 22.Rg2+- fg4 23.Kh1 g5 24.Nd5 c6 25.bc6 bc6 26.Nc3 gf4+/- 27.Nce4 fe3 28.Qe3+- d5 29.cd5 cd5 30.Qg3 Qh6 31.Nc5 Bc8 32.Re1 Re1 33.Qe1 Qc6 34.Nf1 Qb5 35.Ng3 h5 36.Rf2 Rf2 37.Qf2 Qe8 38.Ne2 Qg6 39.Nf4 Qb1 40.Kg2 Qf5 41.Nfd3 1–0. Dzieniszewski,Andrzej – Bojczuk, Warszawa, 1984.

6.Be2 Nh6 7.d4 e4 8.Nfd2 f5 9.Nc3 Nf6 10.0-0 0-0 11.Rc1 Be6 12.Nb3 Qe7 13.a4 Rae8 14.d5+= Bc8 15.Qd2 Nhg4 16.h3 Ne5 17.Rfd1 a6 18.c5 g5 19.cd6 cd6 ½–½. Schirmer,Michael – Ziese,Gerhard, corr SOK–92–81, 1992.

7.Nfd2 f5 8.Qb3 Ngf6 9.Be2 c6 10.Nc3 0-0 11.f4 ef3 12.Bf3 Re8 13.Nd1 Ne4 14.Be4 fe4 15.Nf2 Qg5 (15...Nf6 16.0-0=) 16.0-0 (better is 16.Nde4 Qg2 17.Nd6+/-) 16...Nf6= 17.d5 cd5 18.Rac1 dc4 19.Rc4?? Can e4 get defended? (19.Nc4 Re7 20.Qa3+=) 19...Be6-+ 20.Nfe4 Ne4 21.Ne4 Bc4 22.Qc4 (22.Ng5? Bb3 23.Bg7 Kg7 24.ab3 h6-+ (24...Re3?! 25.Rf7 Kg8 26.Rb7-+)) 22...d5 23.Ng5 dc4 24.Bg7 Kg7 25.Rf7 Kg8 26.Rb7 Rf8 27.Ne4? (27.Nh7 Rf7 28.Rf7 Kf7 29.Ng5 Kg8 30.Ne4-+) 27...Rae8-+ 28.Ng5? (28.Nc5 Re3 29.g4-+) 28...c3 29.h4 (29.Rh7 Rc8 30.Rh6 Rc6-+) 29...c2 30.Rc7 Rc8 (30...Rc8 31.Rc2 Rc2-+) 0–1. Garcia Roman (2030) – Madurga Lopez (1820), Albacete op, 2009.

7.Nfd2+= f5 8.Qc2 Ne7 9.Nc3 Nf6 10.Be2 Be6 11.d5 Bf7 12.0-0 0-0 13.f3 ef3 14.Bf3 Nd7 15.e4 Ne5= 16.Rae1 f4 17.Bd1 g5 18.g3 N7g6 19.Ne2 Be8 20.Nd4= Bd7 21.Nf5 Bf6 22.Bh5 fg3 23.hg3 Be8 24.Nb3 Ba4 25.Rf2 Kh8 26.Ref1 g4 27.Nh6 Nf3 28.Kg2+- Bb3 29.ab3 (29.ab3 Nge5 30.Be5 Be5 31.Ng4+-) 1–0. Kreuzer,Uwe – Ziese,Gerhard, corr, 1993.

7.Nfd2 f5 8.Nc3 Ngf6 9.Be2 c6 10.0-0 0-0 11.a4 a5 12.b5 Re8 13.Qb3 h5 14.c5+/- d5 15.b6 Nf8 16.Qc2 g5 17.Nb3+/- N6h7? 18.Qd2 g4 19.Nd1 Qh4 20.Na5 Ng5 21.g3?? Qh3-+ 22.f4 gf3 23.Bc4 Ra5 24.Bb3 Nfh7 25.Rf2 Ra6 26.Qe1 Nf6 27.Nc3 Be6 28.Qf1 Ng4 29.a5 Ne3 30.Qc1 Ng4 31.Qd2 e3 (31...e3 32.Nd5 Bd5 33.Re2 ed2 34.Re8 Kh7 35.Rh8 Kh8 36.Bd5 Qg2#) 0–1. Beaulieu,Michel – Egreteau,E (2060), 2nd Open, d'Angers FRA (5), 2007.

7.Nfd2 f5 8.Nc3 Ngf6 9.Be2 c6 10.Qb3 Qe7 11.b5 c5 12.d5 0-0 13.a4 f4 14.0-0-0 fe3=+ 15.fe3 Bh6 16.Nf1 Ne5 17.h3 b6 18.Rd2 Bd7 19.Nd1 a6 20.Nf2 ab5 21.ab5 Ra7 22.Nh2 Nd3 (22...Nd3 23.Bd3 ed3=+). Fedulow,W – Koponen,Erkki, corr ICCF, 1973.

7.Nfd2 f5 8.Nc3 Nh6 9.Qb3 c6 10.Ne2 Nf6 11.h4 Be6 12.Nf4 Bf7 13.a4 0-0 14.b5 Nhg4 15.Be2 Qe7 16.a5 c5 17.d5 Rae8 18.a6 b6 19.Nf1 Ne5 20.Ng3 Nfg4 21.h5+/- Qg5 22.Nh3 Qf6+/- 23.hg6 hg6 24.0-0-0 g5? 25.Bg4+- fg4 26.Ne4 Nd3 27.Rd3 Qb2 28.Qb2 Bb2 29.Kb2 Re4 30.Ng5 Rc4 31.e4 Be8 32.f3 Bb5 33.Rdd1 Ba4 34.Rdg1 Rc2 35.Kb1 c4? 36.Rh4 c3 37.Rg4 Rc8?? 38.Rh1 Rc4 39.Ne6 Kf7 40.Rf4 Kg6+- 41.Nf8 Kg7= 42.Ne6 (42.Ne6 Kg6 43.g3 Rb4 44.Ka1+-) 1–0. Alekseyev,S – Sakayev,K, St Petersburg, 1996.

7.Nfd2 f5 8.Be2 Ne7 9.0-0 0-0 10.Nc3 Nf6 11.a4 a5 12.b5 b6 13.Qb3 Kh8 14.Rac1 g5 (14...Be6 15.d5 Bc8 16.f3 ef3 17.Rf3+=) 15.Rfd1 Ng6 16.Ba3 Qe7 17.c5 dc5 18.dc5 Be6 19.Bc4 Bc4 20.Nc4 Qf7? (better 20...bc5 21.Nd5 Nd5 22.Rd5 Qf7+/-) 21.cb6+- cb6 22.Nd2?? (better 22.Bf8 Rf8 23.Qa2+-) 22...Qb3+= 23.Nb3 Ne5? (better 23...Rfe8+=) 24.Bf8+- Bf8 25.Nd5 Nd5 26.Rd5 Nd3 27.Rc6 (better 27.Rc7 f4 28.ef4 gf4 29.f3+-) 27...Bb4? (27...Nb4 28.Rd7 Nc6 29.bc6 Rc8+-) 28.Rb6 Nb2 29.Rd7 1-0. jhonores (2230) - Dr0gon (2295), Rated Blitz game, lichess.org, 2020.

5.Nc3 a5 6.a3 =+.

5.Nc3 c6 6.Nf3= Be7 7.Bd3 0-0 8.0-0= h6 9.a4 a6 10.Bc2 b6 11.d3 c5 12.b5 ab5 13.Nb5 Ba6 14.Qe2 Nh5= 15.g3 Nhf6 16.Bc1 Nh7 17.Be3 Nb8 18.Qd2 Nc6 19.Rfd1 Bb5 20.ab5+= Ra1 21.Ra1 Nd4 22.Ne1 Qd7 23.Bd4 cd4 24.Ng2 Ng5= 25.Nh4 Nh3-+ 26.Kg2 Bh4 27.Bd1 Be7 28.Ra6 Rb8 29.Qb2 Ng5 30.g4 Ne6 31.h3 Nf4 32.Kg3 Nd3 33.Qd2 Nc5 34.Ra3 Ne4 (34...Ne4 35.Kh2 Nd2-+) 0–1. alaamattar (2135) – bokkie (2110), net–chess.com, 2006.

5.Nc3 c6 6.Nf3 Be7 7.Be2 0-0 (7...Qb6 8.a3=) 8.0-0+= Re8 (8...a5 9.a3+=) 9.a4 (9.d4 ed4 10.Nd4 c5 11.bc5 Nc5+=) 9...Bf8 (9...a5 10.b5=) 10.a5+= d5 11.ed5 (11.cd5 Bb4 12.dc6 bc6+=) 11...Bb4= 12.dc6 (12.Qb3 Ba5 13.Qa2 Bc7+=) 12...bc6+= 13.Qa4 (13.Qc2!?+=) 13...Rb8–/+ 14.Ba3 (14.Qc2!?–/+) 14...Nc5-+ Black prepares e4 15.Qc2 (15.Qc6 Bb7 16.Qe8 Ne8 17.Bb4 Nd3-+) 15...e4 (15...Ba3 16.Ra3 e4 17.Ne1-+) 16.Ne1 (16.Bb4 Rb4 (16...ef3 17.Bc5 fe2 18.Rfe1+/-) 17.Ng5 h6-+) 16...Ba6 (16...Ba3!? 17.Ra3 h6 18.g3-+) 17.Bb4–/+ Rb4 18.Qa2 Rb8 19.Rb1 (19.Rd1 Nb3–/+) 19...Rb1-+ 20.Nb1 Nd5! 21.g3 (21.cd5 Be2 Pinning (21...Be2 Deflection)) 21...Nb7 22.Ng2 Nb4 23.Qa4 Qa5 24.Qa5 Na5 25.Ne3 Nd3 (25...c5 26.Nc3–/+) 26.Bd3 (26.Nc3 Nc5–/+) 26...ed3 27.Rc1 Rb8 (27...Re7–/+) 28.Kf1 (28.Nc3!? Bc4 29.Ne4–/+) 28...Rb2-+ 29.f4?? (29.Ke1-+) 29...Nb3 30.Re1 (30.Rc3 Rb1 31.Kf2 Rb2-+) 30...Rb1! 31.Nd1 (31.Rb1 Nd2 Double attack (31...Nd2 Decoy)) 31...Kf8 32.Kf2 Nd2 33.Ke3 Nc4 34.Kd3 0–1. Ungureanu,Sandu (2135) – Isherwood,Paul (2010), 9th Gibraltar Challengers–A, 2011.

5.d3 Be7 6.Nf3 0-0 7.Be2 c5 8.b5 g6 9.Bc1 Nh5 10.Bh6 Ng7 11.Nc3 1–0. Zile,Robert – Iglin,VP, W–ch M42 corr, 1972.

5.Qc2 Bg7 6.e3 f5 (6...a5 7.a3=) 7.d4 (7.c5 dc5 8.bc5 Ngf6+=) 7...Qe7 (7...e4 8.Nfd2=) 8.de5 (8.Nc3 c6 9.Be2 a5+=) 8...de5 (8...Ne5 9.Nbd2=) 9.Nc3 (9.c5 Ngf6 10.Nc3 e4+=) 9...c6 (9...Qb4 10.Be2=) 10.c5+= Ngf6 11.Bc4 (11.Rd1 a5 12.b5 0-0+=) 11...a5 12.a3 e4 13.Nd4 Ne5 14.Be2 h5 15.h4 (15.0-0 0-0+=) 15...0-0 (15...ab4 16.ab4 Ra1 17.Ba1=) 16.Rd1 (16.0-0 Nfg4 17.g3 g5 18.Bg4 Ng4 19.hg5 Qg5=+) 16...ab4=+ 17.ab4 Nfg4 18.Qb3 (18.g3!?=+) 18...Kh7-/+ 19.Na4? (better 19.Bg4 hg4 20.Kf1-/+) 19...f4-+ 20.Nb6 fe3 21.fe3 Bh6 (21...Nf2 22.Kd2 Nh1 23.Rh1-+) 22.Bc1 (22.Na8 Ne3 23.Kd2 Bg4 24.Bg4 Nd1 (24...N3g4?! 25.Kc3 Ra8 26.Qe6 Qe6 27.Ne6-/+; 24...N5g4?! 25.Qe6 Nd1 26.Kd1 Qe6 27.Ne6 Ra8 28.Kc2-+; 24...hg4?! 25.Qe6 Qd8 26.Kc3=+) 25.Kd1 Ng4-+ (worse 25...hg4 26.Qe6 Rf7 27.Kc2+-)) 22...Rb8 (better 22...Nf2 23.Kd2 Ra7 24.Nc8 Rc8-+) 23.Nc4?? (better 23.Nc8!? Qf6 24.Kd2 Rbc8 25.Bg4 Ng4 26.Kc2-/+) 23...Nd3! 24.Bd3 ed3 (better 24...Nf2 25.0-0 Qh4 (25...Nd3?! 26.Rf8 Bf8 27.Rf1-/+) 26.Rf2 Qf2 27.Kh2 ed3-+) 25.Qd3?? (better 25.Nf3 Be6 26.Rd3 Rf3 27.gf3-+) 25...Bd7 (25...Nf2 26.Qb3 Nh1 27.Nf3 Rf3 28.gf3 Qh4 29.Kd2 Qf2 30.Kc3 Bg7 31.Rd4-+) 26.g3?? (better 26.Nf3 Bf5 27.Qd6=) 26...Nf2-+ 27.Rh2 (27.Qd2 Nh1 28.Qg2-+) 27...Nd3 28.Rd3 Bg4 (better 28...Qe4 29.Ra3 Rbe8-+) 29.Nb6 (29.Kd2-+) 29...Rbd8 30.Bd2 Qf6 31.Rh1 (31.Bc1 Qf1 32.Kd2 Qd1 33.Kc3 Qc1 34.Nc2 Bg7 35.Rd4 Rd4 36.Kb3 Qb1 37.Ka4 Qa2 38.Na3 Bd1 39.Rc2 Bc2 40.Ka5 Qa3 41.Na4 Qb4) 31…Qf2 0-1. bjoernsen (2410) - MateuszZajac (2335), Rated Blitz game, lichess.org, 2016.

5.d4 Bg7 6.de5 de5 7.c5 Ngf6 8.Ne5 Ng4 9.Nc6+/- Bb2 10.Nd8+- Kd8? 11.Nd2 Ba1 12.Qa1 Re8 13.e3 c6 14.Qd4 f5 15.Be2 Ngf6 16.Bf3 Re6 17.Nc4 Ke7 18.Nd6 Ne5 19.Bd1 Kf8 20.Bb3 Re7 21.0-0 Kg7 22.f4 Ned7 23.Re1 Nf8 24.e4 b6 25.e5 N6d7 26.h3 h5 27.g4 hg4 28.hg4 bc5 29.bc5 fg4 30.f5 (30.f5 Kh7 31.Qg4+-) 1–0. Grau,Jose – Bernal Tinajero,Julio (2200), Ch Asturias team, 1992.

5.g3 Bg7 6.Bg2 Nh6 7.0-0 0-0 8.Qb3 c5 9.Nc3 Re8 10.d3 Nf5 11.e3 Ne7 (11...cb4 12.Qb4 Nc5 13.Rfd1=) 12.b5 f5 13.a4 Rb8 14.Rfd1 b6 (15.Ra2 Nf6+=). Grund,Karl – Gierse, corr, 1972.

5.d3 c6 6.Bg2 Be7 7.Nf3 Qc7 8.Qc2 Nf8 9.0-0 Ng6 10.Nbd2 0-0 11.a4 d5 12.cd5 Nd5 13.b5 Bd7 14.bc6 Nb4= 15.Qc3 Nc6 16.Ba3 Rac8 17.Rac1 Qd8 18.Qb2 Rc7 19.Ne4 Bc8 20.h4 Re8 21.Rc2 Nf8 22.Rfc1 Ne6 23.Be7 Rce7 24.Qa3 f6? 25.Nd6+- Rf8? 26.Nc8 Qc8 27.Rc6! bc6 28.Qe7 Rf7 29.Qd6 Nd8 30.Nd2 (30.Nd2 Rd7 31.Qc5+-) 1–0. Majul,Isolina (2045) – Buitrago,Shirley, COL–ch (Women), 1998.

5.Bg2 c6 6.Nc3 Be7 7.Nf3 0-0 8.0-0 Re8 9.d4 Bf8 (9...ed4 10.Nd4 Qb6 11.b5+=) 10.e3 (10.b5 cb5 11.Nb5 ed4+=) 10...e4 (10...Nb6 11.de5 de5 12.Qb3=) 11.Nd2+= d5 12.c5 (12.Qb3 Nb6 13.c5 Nbd7+=) 12...g6 (12...b6 13.Re1=) 13.b5+= Bg7 14.bc6 (14.Qa4!?+=) 14...bc6= 15.Qa4 Qc7 16.Rab1 (better 16.Nb3=) 16...Nh5 (better 16...a5!?=+) 17.Nde4 de4 18.Ne4 Bf8 (18...Rd8 19.Nd6+-) 19.Ba3 (19.Nd6 Re6 20.Bc6 Rb8+-) 19...Re6 20.Nd6 Nb8 21.d5 Re5?? (better 21...cd5 22.Bd5 Bd7+-) 22.dc6+- Na6 (22...Be6 23.Rb7 Bd6 24.Rd1+-) 23.Rb7 (better 23.Nb5 Qe7 24.c7 Nc5+-) 23...Nc5 24.Bc5 Bb7 25.cb7 Rb8 (better 25...Rd8 26.Nf7 Qf7 (26...Kf7?? 27.Rd1 Rd1 28.Qd1+-) 27.Ba7 Bd6+-) 26.Ba7 Rb7 (26...Bd6 27.Bb8 Qb8+-) 27.Nb7 1–0. Ungureanu,Sandu (2135) – Smith,David A (1950), 9th Gibraltar Challengers–A, 2011.

5.Bg2 Be7 6.d3 0-0 7.Nd2 c6 8.Ngf3 Qc7 9.Rc1 Re8 10.0-0 g6 11.e4 Bf8 12.h3 c5 13.a3 b6 14.Nh2 Nh5 15.Qe1 Bg7 16.f4 Bb7 17.f5= Bh6 18.Rc2 cb4 19.ab4 a5 20.Ng4 Bg7 21.ba5 Ra5 22.Kh2 Qd8 23.Qe3 Rf8 24.Nf3 Nhf6 25.Nh6 Kh8 26.Rcf2 Bh6 27.Qh6+/- Ng8 28.Qe3 Kg7 29.fg6 hg6 30.Ng5 Ndf6 31.Bc3 Ra6 32.Qc1 Ra4 33.Qd2 Qc7 34.Qc2 Bc6 35.Qb2 Re8 36.Bd2 Rea8 37.Be3 R4a6 38.d4 Ra3 39.de5+- de5 40.Bb6 Qe7 41.c5 R3a4 42.Qb3 Rb8 43.Rd2 Nh6? 44.Rd6 Be8 45.Rdf6 Qf6 46.Rf6 Kf6 47.Nf3 Re4 48.Qd3 (48.Qd3 Bc6 49.Qd6 Kg7 50.Qb8+-) 1–0. Alic,Miran (1940) – Wehr,Joachim (1630), Berlin op, 2003.

4.a4 Nf6 5.e3 Nbd7 6.b5 Be7 7.Nf3 0-0 8.Be2 a6 9.0-0 ab5 10.ab5 Ra1 11.Ba1 b6 12.d4 ed4 13.Nd4 Nc5 14.Nc6 Qe8 15.Ne7 Qe7 16.Nc3 Nfe4 17.Ne4 Ne4 18.Qd4 Nf6 19.Bf3 Rd8 20.Bc3 d5 21.Rd1 Kf8 22.cd5 1-0. BeepBeepImAJeep (2605) - ZdenekT (1865), Rated Bullet tournament, lichess.org.

4.Qb3 a5 5.a3 ab4 6.ab4 Ra1 7.Ba1 Nf6 8.Nc3 Be7 9.e3 0-0 10.Nf3 Qd7 (10...Nc6 11.Nd5=+) 11.Ng5 Bf5 12.d3 h6 13.Nge4 Ne4 14.Ne4 (14.de4 Be6=) 14...Nc6 (14...b5 15.Ng3=) 15.Be2= Bg6 16.0-0 Kh7 17.Bb2 f5 18.Nd2 f4 19.e4 Bh4 (19...Ra8 20.b5 Nd8 21.d4+=) 20.Nf3 Be7 21.b5 Nd8 22.Qc2 Ne6 23.Rc1 (23.Ra1 c6 24.d4 ed4 25.Nd4 Bf6=) 23...Nc5 24.Qd1 b6 (24...c6 25.Ba3 Ne6 26.c5=) 25.Ba3 (25.Ra1 c6 26.bc6 Qc6+=) 25...Qe6 26.Bc5 bc5 (26...dc5 27.Ra1=) 27.Ra1+= Bh5 (27...Be8 28.Nd2+=) 28.Ra7 Qd7 (better 28...Qc8!?+/-) 29.Ne5!+- de5 30.Bh5 g5 (30...Qd6+-) 31.Bg4 Qd6?! (31...Qd8+-) 32.Bf5 Kg7 33.Qe2 (33.Ra6 Qd4 34.Rg6 Kf7 35.Rh6 g4 36.Rh7 Kf6+-) 33...Bd8 (33...Rb8 34.h3+-) 34.Qa2?? (better 34.Ra6!? Qd4 35.Rg6 Kf7+-) 34...Qd4 (34...Qd3!? 35.Qa1 Rf6+/-) 35.Qc2 Rf6 36.h3 (36.Qb3 Rb6+-) 36...h5 (36...Rd6 37.Qb1 Kg8 38.Ra3+-) 37.Ra8 (37.Qe2 Kh6+-) 37...Be7 (37...Rd6 38.Ra3+-) 38.Qe2 Bd6?? (38...Rh6+-) 39.Qh5 f3 (39...Qf2 40.Kf2 Rh6 41.Qg5 Kf7 42.Qh6 f3 43.Qe6 Kg7 44.Qg6) 40.Qh7 1-0. ClayPigeons (2040) - pavlo_ostrikov (1970), Rated Bullet game, lichess.org, 2020.

4.Qb3 Nf6 5.Nc3 Be7 6.e3 0-0 7.Nf3 Nbd7 8.d4 a5 9.d5 (9.ba5 ed4 10.ed4 c6=) 9...Bg4 10.a3 ab4 11.ab4 Ra1 12.Ba1 Bf3 13.gf3 e4 (better 13...c6!?=) 14.fe4+/- Ne5 15.f4 Nf3 16.Kf2 (16.Ke2 Nh4+/-) 16...Nh4 (better 16...Nd2!? 17.Qc2 Ng4 18.Ke2 Nc4+=) 17.Be2 Qd7 18.Qd1 Qh3 19.Qf1 (better 19.Qg1!?+/-) 19...Ng4= 20.Bg4 Qg4 21.Qe2?? (better 21.Ke1=) 21...Qg2-+ 22.Ke1 Qh1 (better 22...Nf3 23.Kd1 Qh1 24.Kc2 Qa1 25.Qf3 Bf6-+) 23.Kd2 (23.Qf1 Ng2 24.Ke2 Qh2-+) 23...Bf6 (better 23...Qa1 24.Qd1 Qb2 25.Qc2 Nf3 26.Kd1 Qb4 27.Ke2 Nh2 28.Na2-+) 24.Bb2 Nf3 (24...Bc3 25.Kc3 Qe4 26.Qd3-+) 25.Kc2 Qh2 (25...Re8 26.e5 de5 27.fe5 Be5 28.Nd1-+) 26.Kd3 (26.Qh2 Nh2 27.Nb5 Bb2 28.Kb2 Nf1-+) 26...Qe2 (better 26...Ne1! 27.Kd2 Bc3 28.Bc3 Nf3 29.Kd3-+) 27.Ke2 Bc3 (27...Nh2 28.e5 de5 29.Nb5-+) 28.Bc3 Nh4 29.e5 de5 30.fe5 (30.Be5 Rc8-+) 30...Re8 31.Kd3 Ng6 32.d6 cd6 (32...h5 33.Bd4-+) 33.ed6 Rd8 34.c5 Kf8 (34...h5 35.Bd4-+) 35.e4 (35.Kd4 h5-+) 35...Ke8 (35...h5 36.b5 b6 37.Kc4 bc5 38.Kc5-+) 36.e5 (36.Bg7 Kd7-+) 36...Nf4 (36...h5 37.Ke4-+) 37.Kd4 Ne6 38.Kd5 (38.Ke4 h5 39.Be1 Kd7-+) 38...h5 39.b5 White intends c6 39...g5 (39...Nc5!? 40.Ba5 Rc8 41.Bb6-+) 40.c6 bc6 41.bc6 h4 (better 41...Rb8 42.Bd2 Rb1-+) 42.Ba5 White prepares c7 (42.d7 Rd7! 43.cd7 Kd7 44.Be1-+) 42...h3 43.Bd8 Nd8 (43...h2 44.c7 h1Q 45.Kc4 Qc6 46.Kd3 Nd8 47.cd8Q Kd8 48.Kd4-+) 44.c7 Kd7 (44...Kd7 45.cd8Q Kd8-+) 0-1. ClayPigeons (2200) - Rion_Hendrianto7 (2180), Rated Bullet game, lichess.org, 2021.

4.b5 Bc4 5.Qa4 Be6 6.Na3 Bd7 7.d4 ed4 8.Qd4 Nf6 9.g3 c6 10.Bg2 d5 11.Qe3 Be7 12.Bf6=+ gf6 13.Rd1?? 0-0 14.Nh3?? Qa5-+ 15.Rd2 Qa3 16.Qa3 Ba3 17.0-0 Bf5 18.bc6 bc6 19.Rd4 Bd6 20.e4 Bg6 21.ed5 cd5 22.Bd5 Rd8?? 23.Ba8+- Be7 24.Rd8 Bd8 25.Rc1 Bf5 26.Nf4 Bb6 27.Nd5 Nd7 28.Ne7 Kg7 29.Nf5 Kg6 30.Ne7 Kh6 31.Nc8 Nc5 32.Nb6 ab6 33.Bc6 Ne6 34.a4 Nd4 35.Rb1 Nc6 36.Rb6 Na5 37.Rf6 Kg7 38.Rf5 Nc6 39.Rc5 Nb8 40.a5 Nd7 41.Rc7 Nb8 42.Rb7 Na6 43.Rb6 Nc7 44.a6 Nd5 45.Rb8 Nc7 46.a7 Kg6 47.Rb7 Na8 48.Rb8 Nc7= 49.Rc8 (49…Ne6 50.a8Q+-) 1–0. idado – IoannisAML, Live Game Caissa's Web, 2004.

4.Qc2 Nc6 5.b5 Na5 6.e4 a6 7.a4 Nf6 8.Nf3 h6 9.d4+= ed4 10.Nd4 Be7 11.Bc3 b6+= 12.e5 de5 13.Ne6 fe6 14.Qg6 Kf8 15.Nd2 h5 16.Be2+/- Rh6 17.Qc2 Bd6 18.0-0 Nb7 19.Bf3 Ng4?? 20.Bb7+- Nh2 21.Kh2 Qh4 22.Kg1 Rf6 23.g3 Qg5 24.Ba8 h4 25.Ne4 Qg6 26.ba6 Rf3 27.Bc6 hg3 28.fg3 Bc5 29.Kg2 (29.Kg2 Rf5 30.Nc5 bc5 31.a7+-) 1–0. pierre – dimachil, chess.com, 2007.

4.Qc2 Be7 5.e4 Nf6 6.Nf3 h6 (6...Bg4 7.Be2=) 7.d4= ed4 8.Nd4 Nc6 (8...Bd7 9.a3=) 9.Ne6+= fe6 10.e5 (10.b5!? Ne5 11.c5+=) 10...Ne5+= 11.Qe2 Qd7 12.f4 Nf7 13.g3 e5 14.Bg2 (14.fe5 de5 Passed pawn) 14...c6 15.c5 (15.0-0 0-0+=) 15...0-0 (15...ef4 16.cd6 Qd6-+) 16.h4? (16.fe5 Ne5 17.0-0 Qg4–/+) 16...Qg4 (16...ef4 17.Bh3 Qd8 18.gf4 dc5 19.Rg1-+) 17.Qd3? (17.Qg4!? Ng4 18.Bh3-+) 17...e4 (better is 17...ef4!? 18.cd6 Bd6 19.0-0-+) 18.Qe3 d5 19.Nd2 Qd7 20.Bh3–/+ Qc7 21.Be6 Kh8 22.0-0-0 a5–/+ 23.g4 Nd8?? 24.Bf5?? ab4-+ 0–1. Savelenko,Arseny (2060) – Khachapuridze,David (1880), RUS–chB U16 Dagomys, 2009.

4.Qc2 f5 5.e3= Nf6 6.Nf3 Be7 7.Be2 Nbd7 (7...e4 8.Ng5 Bc8 9.Nc3=) 8.0-0 (8.Ng5 Nf8+/-) 8...0-0 (better 8...Ne4!?+=) 9.Ng5+/- Bf7 10.Nf7 (10.Qf5!? Bg6 11.Qh3+/-) 10...Rf7+/- 11.Qf5 g6 (better 11...Nd5! 12.Qh3 Nb4+/-) 12.Qc2+- Rc8 (12...a5 13.a3+-) 13.Nc3 c6 14.d3 (14.f4 ef4 15.Rf4 a5+-) 14...d5 15.a3 a6 16.Rac1 (16.Bf3+-) 16...h5? (16...d4!? 17.Na2 Nf8+/-) 17.Qd1 (17.d4 ed4 18.ed4 Nf8+-) 17...Kh7 (17...Bd6 18.cd5 Nd5 19.d4+-) 18.Bf3 (18.cd5 cd5 19.Qb3 Nb6+-) 18...Nf8 Black prepares the advance d4 (18...Nb6+-) 19.cd5 cd5 20.Na4 (20.Qb3 Ne6 21.Nd5 Rc1 22.Nf6 Bf6 23.Rc1 Ng5+-) 20...d4? (better 20...Rc1 21.Qc1 Bd6+-) 21.Rc8 (21.Qb3 Kg7+-) 21...Qc8 22.ed4 ed4 23.Bd4 Qd7 24.Bc5 (24.Be3 Nd5+-) 24...Ne6 25.Be7 (25.Nb6!? Qd8 26.d4 Ng5+-) 25...Qe7 26.Re1 (26.Qc1 Nd4 27.Re1 Qc7+-) 26...Qd6 27.Nc3 Nd4 28.Be4?? (better 28.Ne4 Qf4 29.Qd2 Qd2 30.Nd2+-) 28...Ng4=+ 29.g3 Nf2 (29...Rf2!? 30.Bg2 Nc2=+) 30.Qh5= Kg7 31.Qh4? (31.Bg6 Qg6 32.Qe5 Qf6 33.Qf6 Rf6 (33...Kf6? 34.Kf2 Kg6 35.Kg2+-) 34.Re7 Kf8 35.Rb7 Nd3=) 31...Nc2 (better 31...Ne4 32.Qe4 Nf3 33.Kg2 Ne1 34.Qe1 Qd3-+) 32.Re2?? (better 32.Bg6 Kg6 33.Re8=) 32...Qd4-+ 33.Kg2 (33.Rc2 Ne4 34.Kg2 Qd3 35.Qf4 Qc2 36.Kf3 Qc3 37.Kg4 Nf2 38.Qf2 Rf2 39.h3 Qe5 40.h4 Qf5) 33...Qc3 (33...Ne3 34.Re3 Qe3 35.b5-+) 34.Rf2?? (better 34.Bd5 Qd3 35.Qc4 Qc4 36.Bc4-+) 34...Rf2 (better 34...Ne3 35.Kh3 Rf2 36.Qe7 Rf7-+) 35.Kf2+/- Qd2 36.Kf1?? (better 36.Kf3 Ne1 37.Kg4 Qe2 38.Kf4 Nd3 39.Bd3 Qd3 40.Qe7 Kh6 41.Qf8 Kh7 42.Qf7 Kh6 43.Qf6 Qc4 44.Ke3 Qc1 45.Ke4 Qc4 46.Ke5 Qc3 47.Ke6 Qc6 48.Ke7 Qc7 49.Kf8 Qc8 50.Kf7 Qc7 51.Qe7 Qc4 52.Kf8 Qc8 53.Qe8+/-) 36...Ne3 37.Kg1 Qe1 0-1. bjoernsen (2280) - robiezdjencia (2125), Rated Blitz tournament, lichess.org, 2016.

4.Qc2 g6 5.e3 Bg7 6.Nf3 Ne7 7.d3 0-0 8.Nbd2 c6 9.Be2 f5 10.Rc1 h6 11.c5 Ba2 12.cd6 Qd6 13.0-0 Nd7 14.Nc4 Bc4 15.Qc4 Qd5 16.Qc2 Kh8 17.Rfd1 a6 18.d4 e4 19.Ne5 Qe6 20.Bc4 Nd5 21.Qb3 N7b6 22.Bf1 Kh7 23.Rc5 Rad8 24.Rdc1 g5 25.Be2 f4 26.Bg4 Qf6 27.R5c2 Qe7 28.Rc5 Be5 29.de5 Qf7 30.e6 Qg6 31.Qc2 h5 32.Be2 f3 33.Bf1 fg2 34.Bg2 Qe6 35.Be4 Time forfeit 1-0. bjoernsen (2240) - costaszen (2180), Rated Blitz game, lichess.org, 2016.

4.c5 dc5!? 5.bc5 Bc5 6.Be5 Nf6 –/+.

4.c5 Nf6 5.e3 Be7 6.d4=+ Nbd7 7.Bb5 0-0 8.Nf3 c6 9.Ba4 b5 10.cb6 Qb6 11.de5 de5 12.a3 Bc4 13.Ne5+= Ne5 14.Be5 Rad8 15.Qc1 Bb4? 16.ab4+- Qb4 17.Nd2?? Ne4+= 18.Bc6?? Nf2 19.Kf2+- Rd2 20.Kg3 Be6?? 21.Ra4 Rg2 22.Kg2 Bd5 23.e4 Be4 24.Kh3 Qb3 25.Kh4 Bh1 26.Qh1 Qe6 27.Qe4 Qh6 28.Kg3 Qg5 29.Kf3 Qh5 30.Ke3 Qg5 31.Kd3 Rd8 32.Bd5 Qc1 33.Qg2 Qd1?? 34.Kc3 Qe1? 35.Kc4 Qe5= 36.Ra7 Rc8 37.Kb3?? Qe3-+ 38.Kb4 Qa7 39.Qf3 Qb6 40.Ka3 Qd6 41.Kb2 Qf6 42.Qf6 gf6 43.h4 Kg7 44.Kb3 f5 45.h5 f6 46.Be6 Rc5 47.Kb4 Re5 48.Bb3 f4 49.Kc4 f3 50.Kd4 f2 51.Bc4 Re1 52.Bb5 f1Q 53.Bf1 Rf1 54.Ke3 Kh6 55.Ke2 Rf5 56.Ke3 Kh5 57.Ke4 Kg5 58.Ke3 h5 59.Ke4 h4 60.Ke3 h3 61.Ke2 h2 (61...h2 62.Ke3 Re5 63.Kf2 h1Q 64.Kg3 Qg1 65.Kf3 Re3) 0–1. rabelloenter (2000) – nottoo (2050), net–chess.com, 2006.

4.d3 a5 5.b5 Nd7 6.Nf3 (6.e3 Ngf6 (6...Be7 7.Nf3 Ngf6 8.Be2 0-0 9.0-0 a4 10.Ng5 Bf5=) 7.Nf3 Be7 8.Be2 c6 9.Nc3 d5 10.0-0 0-0=) 6...Be7 (6...Ngf6 7.e3 Be7 8.Be2 0-0 9.Ng5 Bf5 10.0-0 c6=) 7.g3 (7.e3 Ngf6 8.Be2 0-0 9.Nc3 Nc5 10.d4 ed4=) 7...Bf6 (7...c6 8.Bg2 cb5 9.cb5 Rc8 10.0-0 Qb6=) 8.Bg2 Ne7 9.Qc2 (9.0-0 c6 10.Na3 0-0=) 9...Nc5 (9...c6 10.Nc3 d5+=) 10.0-0 0-0 11.Nbd2 g6 (11...a4 12.a3=) 12.d4 ed4 13.Nd4 Nf5 14.Ne6 fe6 15.Nb3 Nb3 16.ab3 Ra7 17.b4 Bb2 18.Qb2 a4 19.e4 Ng7 20.Ra3 e5 21.Qa2 Ne6 22.c5 Qe7 23.Bh3 Rf6 24.Ra1 Kg7 25.Be6 (25.Ra4?! Ra4 26.Qa4 Ng5=) 25...Re6 26.Qc4 (26.Ra4?! Ra4 27.Qa4 dc5 28.bc5 Qc5=) 26...b6 (26...Rf6 27.Ra4 Ra4 28.Ra4+/-) 27.Ra4 (27.cb6 cb6 28.Ra4 Rc7+/-) 27...Ra4 28.Ra4 bc5? (better is 28...dc5 29.bc5 bc5+/-) 29.Ra7+- cb4?? (29...Kh6+-) 30.Rc7 (30.Qc7?! Qc7 31.Rc7 Kf6+-) 1–0. Borchgrevink,Harald (2225) – Wilsbeck,Jan Borge (1985), Open ch–NOR, Oslo NOR, 2004.

4.d3 c6 5.Nd2 Nf6=+ 6.e4 Qb6 7.Bc3 Ng4 8.Nh3 Na6 9.Rb1= d5 10.b5+= Nc7? 11.bc6+- Qc6 12.ed5 Bd5? 13.Qg4 Be6 14.Qe4 Bd6 15.Be5 Qe4+/- 16.Ne4 Be5 17.Rb7 Na6? 18.Nhg5+- 0-0 19.Ne6 fe6 20.Be2 Rfb8 21.Rb8 Rb8 22.0-0 Rb2 23.Bg4 Nc7 24.Ng5 Ra2 25.Be6 Ne6 26.Ne6 Rd2 27.Re1 Bc3 28.Nd8 Kf8+/- 29.Ne6 Kf7 30.Nd8 Kg6 31.h4 a5 32.g4 h6 33.c5 Rd3 34.Re6 Kh7 35.Nf7 Rd7 36.Ne5?? Rc7 37.c6 Be5 38.Re5+/- Rc6 39.Ra5 Rc4 40.f3 Rc6 41.Rh5 g6 42.Re5 Rf6 43.Kg2 Kg7 44.g5 hg5 45.hg5 Rf7 46.Kg3 Rd7 47.Kg4 Rc7 48.f4 Rd7 49.f5 gf5 50.Kf5 Rf7 51.Ke6 Rf4 52.Ke7 Rf7 53.Ke8 Rf4 54.Re6 Rg4 55.Re5 (55.Ke7 Rg5 56.Re1 Kg6=) ½–½. Offermann,Dietmar – Collette,Andreas, FC0031, 2001.

4.d3 Nc6 5.b5 Nd4 6.e3 Nf5 7.Nf3 Nf6 8.Nbd2 d5? 9.cd5+- Bd5 10.e4 Bb4 11.ed5 Qd5 12.Be5 Nd7 13.Bc7 0-0 14.Be2 Nd4 15.Nd4 Qd4 16.0-0 Rfe8 17.Rc1 Ne5 18.Nf3 Nf3 19.Bf3 a6 20.b6 Ba5 21.Bb7 Bb6 22.Ba8 Ra8 23.Qf3 Rc8 24.Bb6 Rc1 25.Qa8 Rc8 26.Qc8 Qd8 27.Qd8 1–0. marre (2105) – futuriste (1760), GameColony.com, 2003.

4.d3 Nd7 5.Nf3 g6 (5...Be7 6.Nc3=) 6.Nc3 Bg7 7.g3 Ne7 8.Bg2 0-0 9.0-0 c6 10.a4 (10.Ng5 Nf5 11.Ne6 fe6+=) 10...Qc7 (10...a5 11.b5=) 11.Rc1 (11.Ng5 a5 12.Ne6 fe6+=) 11...f5 (11...Bh6 12.e3=) 12.Qb3 White prepares b5 (12.Ng5 Bf7+=) 12...a5 (12...Bh6 13.Rb1+=) 13.Ng5 Bf7 14.Nf7 Rf7 15.Ba3 (better 15.b5+=) 15...Kh8? (15...ab4!? 16.Bb4 Nc5+=) 16.b5 (16.Nb5 Qb8 (16...cb5?? 17.cb5 Nc5 18.Qf7 ab4 19.Bb4+-) 17.c5 d5+/-) 16...Rff8 (16...Nc5 17.Bc5 dc5 18.Qa3+/-) 17.Rb1 Rad8 (better 17...Nc5!? 18.Bc5 dc5+/-) 18.bc6+- bc6 19.Qb7 Qb7 20.Rb7 Rf6 21.Rfb1 Re6 (21...e4 22.de4 Rf7 23.Nd1+-) 22.Nd1 (better 22.Rd7!? Rd7 23.Rb8 Bf8 24.Rf8 Kg7+-) 22...e4 (better 22...Nc5 23.Bc5 dc5+-) 23.Kf1 (23.de4!? Nc5 24.ef5 Re2 25.Kf1 Nb7 26.Ke2+-) 23...Ne5 (23...ed3 24.ed3 Nc5 25.Bc5 dc5 26.Ne3+=) 24.Nb2+/- e3 25.d4 Ng4 26.f3 Nf2 (26...Nh2? 27.Kg1 Nf3 28.Bf3 (28.ef3?! e2 29.Nd3 Re3=) 28...Bd4 29.Nd3+-) 27.Nd1 Bd4 28.Nf2 ef2 29.Rc7 (29.Bb2 Bb2 30.R1b2 d5+=) 29...c5 (29...Kg8 30.Rbb7 Re8 31.Bb2=) 30.f4 Ng8 31.Bd5 Ree8 32.Rbb7 (32.Bb2 Nf6 33.Bd4 cd4+=) 32...Nf6= 33.Rf7 (33.Bf3 Rb8 34.Rb5 Ne4 35.Be4 fe4=) 33...Rf8 (33...Rb8 34.Bf3 Rb7 35.Rb7-/+ (35.Bb7 Ng4 36.e4 Nh2 37.Ke2 f1Q 38.Kd2 Nf3 39.Kc2 Qc4 40.Kd1 Qb3 41.Ke2 Qe3 42.Kf1 Qf2)) 34.Rfe7 Rde8 35.Rec7 Rc8 36.Bc1?? (36.Re7 Rfe8 37.e3=) 36...Rb8?? (better 36...Rc7 37.Rc7 Ng4-+) 37.e3+/- Rb7 38.Rb7 (38.Bb7 Bc3+/-) 38...Bc3 (38...Re8 39.ed4 Nd5 40.cd5 Re1 41.Kf2 Rc1 42.Rd7 Rc2 43.Ke1 cd4 44.Rd6+=) 39.Kf2 Ng4 (39...Nd5!? 40.cd5 Re8+=) 40.Kf3 (40.Ke2 Nh2 41.Rb3 Ba1+-) 40...Nh2+/- 41.Kg2 Ng4 42.e4 (better 42.Rb3!? Bf6 43.Bd2+/-) 42...fe4 (42...Nf6 43.Kf3=+) 43.Be4 Nf6 (43...Re8 44.Bf3 Re1 45.Bg4 Rc1 46.Bf3=) 44.Kf3 Bd4 (44...Re8 45.Bd3=) 45.Bd2+= Re8 (45...Ne4 46.Ke4 Kg8 47.Rd7+=) 46.Bd3 (46.Bc6 Re6+/-) 46…Rd8 0-1. pacalmisu (2380) - Fouracle (2360), Rated Blitz game, lichess.org, 2016.

4.d3 Be7 5.g3 Nf6 6.Bg2 c6 7.Nf3 0-0 8.0-0 h6 9.Nbd2= Nbd7 10.a4 Rb8 11.Qc2 Qc7 12.b5 a5 13.Bc3 cb5 14.ab5 b6 15.Bb2 d5 16.Rfc1 dc4 17.dc4 Rfc8 18.Qd3 Nc5 19.Qe3 Ng4 20.Qc3 Bf6 21.Qc2 e4=+ 22.Nd4 e3 23.fe3 Ne3 24.Qb1 Bd4 25.Bd4=+ Ng2 26.Kg2 Qb7 27.Nf3 Ne4 28.Qb2 f6=+ 29.Ra3? Bc4-+ 30.Ra4 Be2?? 31.Rc8+/- Rc8 32.Qe2 g5 33.Bb2 g4? 34.Re4 gf3 35.Qf3 Rc2 36.Kh3 Qd7 37.Rg4 Kh7 38.Qf6 Rh2 39.Kh2 Qg4 40.Qf7 (40.Qf7 Qg7 41.Qg7#) 1–0. Hernandez,L – Chuluun,E, Wch U12 Szeged, 1994.

4.d3 Ne7 5.Nc3 Nd7 6.g3 c6 7.Bg2 Nf6 8.e3 Ng6 9.Nge2 Be7 10.a4 0-0 11.b5 c5 12.Bb7+= Rb8 13.Bg2 a6 14.Qc2 ab5 15.ab5 d5 16.0-0 dc4= 17.dc4 Bc4 18.Rfd1 Qb6 19.Bc6 Bb5?? 20.Bb5+- Ng4 21.Ba3 f5 22.Bc4 Kh8 23.Nd5 Qd6 24.h3 Nf6 25.Ndf4 Qc6 26.Ne6 Rfe8 27.Qf5 Qc8 28.Qc2 Rb4 29.Bb4 cb4 30.Ng5 e4 31.Nf7 Kg8 32.Nd6 Qc4 33.Qc4 Kh8 34.Nf7 Kg8 35.Nh6 Kh8 36.Qg8! Ng8 37.Nf7# 1–0. Fredek (2065) – Guest1298601, Freundschaftspartie, 5m + 0s, 2006.

4.d3 Nf6 5.Nf3 Nbd7 6.Nc3 Be7 (6...a5 7.b5=) 7.g3 0-0 8.Bg2 Rb8 (8...c6 9.Ng5=) 9.a4 (9.Ng5 a5 10.Ne6 fe6+=) 9...d5 (9...a5!? is an interesting alternative 10.b5 c6=) 10.cd5= Nd5 11.Nd5 Bd5 12.e4 (better is 12.0-0!?= would keep White alive) 12...Bb4–/+ 13.Ke2 (13.Kf1 Be6 14.d4 Qe7–/+) 13...Bc6 (13...Be6 14.Ne5 a5 15.Nd7 Qd7 16.Qc2–/+) 14.Qb3 (14.Ne5 Qf6 15.f4 Ne5–/+) 14...Bd6 15.Rhc1 Qe7 16.Kf1 Kh8 (16...Nc5 17.Rc5 Bc5 18.Ne5 Bd6+=) 17.h4? (17.Kg1!?+=) 17...Nc5 (17...f5!? 18.Ng5 h6-+) 18.Rc5 Bc5 19.Ne5 Bd7?? Black lets it slip away (19...f6!? 20.Nf3 a5–/+) 20.d4?? (better is 20.Nd7 and White gets the upper hand 20...Qd7 21.Qc3+-) 20...Bd6 21.Nd3 c6 22.f4 Qe6 23.Qc3 Qg6 24.Nf2 f6 25.Rd1 Be7 26.f5 Qf7 27.g4 Rfc8 28.e5 fe5 29.de5 Be8 30.Ne4 Rd8 31.Re1 Bh4+= 32.e6 Qe7 33.Qh3?? Be1-+ 34.f6 Qe6 35.Ng5 Qc4 36.Ke1 Bg6 37.fg7 Kg8 38.Qe3 Re8 39.Be5 Re5! Double attack: a4/e1 40.Qe5 Re8 41.Bd5 0–1. Tierling,Detlef – Keppler,Wolfgang, Karl Mala Memorial op, 2001.

4.e3 d5 5.cd5 Qd5 6.Nf3 Nd7 (better is 6...f6!?=) 7.Nc3+/- black timed out. (7.Nc3 Qd6 8.Nb5+/-) 1–0. aspasio (2570) – tundeski (2050), net–chess.com, 2012.

4.e3 e4 5.Nc3 f5 6.Nh3 Nf6 7.Nf4 Bf7 8.Be2 Nbd7 9.Qc2 Ne5 10.Nb5 c6 11.Nd4 Qd7 12.h4 Be7 13.h5 a5 14.b5 c5 15.Nb3 a4 16.Nc5 Qc8 17.Na4 Qc7 18.Bd4 0-0 19.Nb6 Rae8 20.a4 Ned7 21.a5 Nc5 22.f3 Bd8 23.Kf2 Qe7 24.Nbd5 Nd5 25.cd5 b6 26.a6 Qg5 27.Rh3 Bf6 28.Rg3 Qh4 29.Bf6 Qf6 30.Qc3 Qc3 31.dc3 Re7 32.Rg5 Re5 33.c4 Ra8 34.Rh1 h6 35.Rg3 Kh7 36.Ng6 Ree8 37.Nh4 f4 38.ef4 e3 39.Ke1 Bh5 40.Nf5 Bg6 41.Nd6 Rf8 42.Ne4 Ne4 43.fe4 Be4 44.Re3 Rf4 45.Rf1 Rf1 46.Kf1 Bf5 47.Bd3 Bd3 48.Rd3 Kg6 49.d6 Kf7 50.d7 Rd8 51.a7 Ke7 52.Ke2 g5 53.Re3 Kf7 54.Re8 1–0. Buczinski – Misztal, Katowice 1966.

4.e3 Qe7 5.Nc3 c6 6.Nf3 f5 7.d4 e4 8.Nd2 Nf6 9.a4 Na6 10.b5 Nc7 11.Qb3 g6 12.a5 Bh6 13.g3 0-0 14.Ba3 Rfd8 15.Be2 Qd7 16.0-0 Bf7 17.Qb2 Rab8 18.Rab1 Bf8 19.Rfd1 g5 20.b6 ab6 21.ab6 Nce8 22.f3 Bh5 23.fe4 Be2 24.Ne2 fe4 25.Nc3 d5 26.Bf8 Kf8 27.cd5 cd5 28.Nb3 Qh3 29.Nc5 Ng7 30.Rf1 Ngh5 31.Qg2 Qg2 32.Kg2 Ke7 33.Rf5 h6 34.Re5 Kf7 35.Rf1 Kg6 36.h3 Rd6 37.Re6 Re6 38.Ne6 Ng7 39.Nc7 Nf5 40.Kf2 Rd8 41.N3b5 Nd6 42.Ne6 Re8 43.Nbc7 Re7 44.Nc5 Nc4 45.Rb1 Nb6 46.Rb6 Rc7 47.Rb7 Rb7 48.Nb7 g4 49.h4 Kf5 50.Nd8 h5 51.Nf7 Ke6 52.Ne5 Kd6 53.Ke2 Kc7 54.Kd2 Kb6 55.Kc3 Kb5 56.Ng6 Ka4 57.Nf4 Ka3 58.Ne6 Ne8 ½–½. Dzieniszewski,Andrzej – Stec, Poland 1976.

4.e3 Qg5 5.Nf3 Qg6 6.d4 Nd7 7.d5 Bf5 8.Nh4+/- Qg5 9.Nf5 Qf5 10.Nc3 c6 11.Bd3 Qf6 12.0-0 Ne7 13.Qb3 g6?? 14.Ne4+- (14.Ne4 Qg7 15.Nd6 Kd8 16.f4+-) 1–0. pcmvr (2870) – rar (2035), net–chess.com, 2008.

4.e3 h5 5.d4 Qf6 (5...ed4!? 6.ed4 Qe7=) 6.Nf3+= Nd7 7.Be2 (7.Qa4 c6+=) 7...e4= 8.Nfd2 Qg6 9.g3 f5 (9...Ngf6 10.Nc3=) 10.Qc2 (10.d5 Bf7+=) 10...Ngf6 11.Nc3 c6 12.0-0-0 (12.d5!? cd5 13.Nb5=) 12...Be7=+ 13.h3 d5 14.c5 0-0 15.Rdg1 Ne8 16.g4 fg4 (16...h4 17.f3 ef3 18.Nf3=) 17.hg4+= hg4 (17...Bg4? 18.f3 Bg5 19.fg4 Be3 20.gh5+-; worse 17...Rf2 A) 18.Rh5?! Nef6 19.Rh3 Ng4= (worse 19...Bg4 20.Nde4 Re2 21.Qe2+/-); B) 18.gh5 Qh7 19.h6+=) 18.Qd1 (18.f3 Bg5 19.f4 Be7+=) 18...Ndf6 (18...Rf2!? 19.Qe1 Rf8-/+) 19.Rh2 Bd8 20.Nf1 (20.Qc2 b5=) 20...Bc7=+ 21.Ng3 Kf7 22.Rhg2 Rh8 23.Rh1 Rh3 24.Qf1 Rd8 25.Rgg1 Qh6 26.a4 White intends b5 26...Bb8 27.b5 Bg3 28.fg3?? (better 28.Rh3 gh3 29.Rg3-/+) 28...Qe3-+ 29.Kb1 Rg3 (better 29...Rh1!? 30.Rh1 Qd4 31.Rh5-+) 30.Nd1 Rg1 31.Rg1 Qb3 32.Bg4? (32.Qe1 Qa4 33.Rg3 e3-+ (33...cb5?! 34.Ra3-/+)) 32...Qa4 33.bc6 bc6 34.Ne3 (34.Be2 Rb8 35.Qf4 Rb7-+) 34...Rb8 35.Be6 Ke6 36.Qh3 Kf7 37.Nf5 (37.Qh2 Qb5-+) 37...Rb3 (better 37...Qb3 38.Qb3 Rb3-+) 38.Rg7 (38.Rg3 Rb5 39.Ra3 Qd1 40.Ka2-+) 38...Ng7 39.Nd6 Ke7 40.Nc8 (40.Qh8 Nge8 41.Ne8 Rf3-+) 40...Kd8 41.Qh8 Nge8 42.Nd6 Qd4 (42...Qd4 43.Qh2 Qc5 44.Ne8 Ne8-+) 0-1. moss42 (1900) - parham (2135), ChessWorld.net, 2016.

4.e3 Nh6 5.d3 Qf6 6.Na3 d5 7.c5 Ng4 8.Nf3 b6 9.Nb5 Na6 10.h3 c6 11.Nd6 Bd6 12.cd6 Nb4 13.hg4 d4 14.Ne5 Qe5 15.Bd4 Qd6 16.Bg7 Rg8 17.Rh7 f5 18.g5 f4 19.Bf6 Bf5 20.Re7 Kf8 21.e4 Qc5 22.Qh5 Qe7 23.Be7 Ke7 24.Kd2 Bg6 25.Qf3 Rgf8 26.a3 Na6 27.d4 Nc7 28.Bd3... 1–0 (38.). Brzoza – Roman, corr PL 1979–80.

4.e4 a6 5.a3 Nc6 6.Nf3 Bg4 7.Be2 Nf6 8.Nc3 Be7 9.0-0 0-0 10.Rb1 Qd7 11.h3 Bf3 12.Bf3 Nd4 13.d3 c6 14.Ne2? Nf3-+ 15.gf3 Qh3 16.Ng3 Nh5 17.Nh5 Qh5 18.Bc1 f5 19.f4 Qh3 20.fe5 de5 21.ef5 Rf5 22.f3 Qg3 (22...Qg3 23.Kh1 Rh5) 0–1. coloplayah (1925) – parkin (1955), net–chess.com, 2005.

4.e4 c6 5.d4 Na6 6.d5 cd5 7.cd5+= Bd7 8.a3 Nf6 9.Nd2 Rc8 10.Ngf3 Bg4 11.Bb5 Bd7 12.Be2 Be7+= 13.0-0 0-0 14.Rc1 Nb8 15.Rc3 b5 16.Qc2 a5 17.Rc1 Na6 18.ba5 Qa5= 19.Nb3 Rc3 20.Qc3 Qc3–/+ 21.Bc3 Ne4 22.Bb2 Bg4 23.Bb5= Nac5 24.Nc5 Nc5 25.Rc3? Rb8–/+ 26.a4 Na4! 27.Ba4 Rb2 28.Ne1 Rb1 29.Kf1 Bf5 30.Bc2 Rc1 31.Ke2 Bc2 32.Rc8=+ Bf8 33.Nc2 g5 34.f3 Rg1 35.Ne3= Ra1 36.Kd3 Ra2 37.h3 h5 38.Ke4 Kg7 39.Rc6 Ra4 40.Rc4 Rc4=+ 41.Nc4 Kg6 42.g4 Be7 43.Ne3 hg4 44.fg4 Bd8 45.Nf5 Bc7 46.Kd3 Bb8 47.Kc4 f6 48.Kb5+/- Ba7 49.Nd6+- Bb8 50.Nf5 e4 51.d6?? Bd6= 52.Kc4 Bf4 53.Kd4 e3 54.Kd3 Kf7 55.Ne3 Ke6 56.Ng2 Ke5 57.h4 gh4 58.Nh4 Bg5 59.Ng6 Kd5 60.Ke2 Ke4 61.Kf2 f5 62.gf5 Kf5 63.Nf8 Bh6 64.Nd7 ½–½. wlittle (1955) – andyj (1780), net–chess.com, 2002.

4.e4 Nd7 5.Nf3 f5 6.d4 c6?? 7.Bd3 Ngf6?? 8.ef5+/- Bf7 9.0-0 Be7 10.de5 de5 11.Be5 0-0 12.Nc3 Bb4 13.a3?? Ne5-+ 14.Ne5 Bc3 15.Nf7 Rf7 16.Rb1 Rd7 17.Qc2 Rd3 18.Rbd1 Rd2 19.Qb3 Be5 20.Rfe1 Bc7 21.h3 Rd1 22.Rd1 Qe7 0–1. wlittle (2125) – towserone (2320), net–chess.com, 2004.

4.e4 g6 5.Nf3 Bg7 6.Be2 Nc6 7.a3 Nh6 8.0-0 f6 9.d4 ed4 10.Nd4 Bf7 11.Nc6+/- bc6 12.Nd2 0-0 13.Qc2 Qe7 14.f3 Kh8 15.Nb3 Bg8 16.Na5 Qd7 17.c5+- d5 18.Ba6 Rab8 19.Bb7 de4 20.Bc6 Qd3 21.Be4 Qc2 22.Bc2 Rbd8 23.Rad1 Rfe8 24.Nc6 Rd1 25.Bd1 Nf5 26.Bc2 Ne3 27.Re1+- Bf7 28.Nd4 f5 29.Ba4+- Nc2?? 30.Re8 Be8 31.Bc2 (31.Be8?! Bd4 32.Bd4 Nd4+/-; 31.Nc2?! Ba4 32.Bg7 Kg7+-) 1–0. Marcos_Yunge (1735) – mensah (1645), internet, 2007.

4.Nf3 Bc4 5.Nc3 Nf6 6.g3 Be7 7.Bg2 c6 8.d3 Be6 9.Ng5 0-0 10.Ne6 fe6 11.0-0 Nbd7 12.Bh3 d5 13.Be6 Kh8 14.a3 d4 15.Ne4 Ne4 16.de4 Nf6 17.Qd3 c5 18.bc5 Bc5 19.Rac1 Qe7 20.Bh3 b6 21.Rc2 Qb7 22.f3 Nd7 23.Rfc1 Rac8 24.Kg2 Bd6?? 25.Rc8+- Rc8 26.Rc8 Qc8 27.Qb5 (27.Qb5 Qc2 A) 28.Qd7?! Qe2 29.Kg1 Qe3 30.Kf1 Qf3 31.Kg1 Qe3 32.Kf1 Qf3 33.Kg1 Qe3 (33...Ba3? 34.Qc8 Bf8 35.Bg4 Qe3 36.Kf1 Qd3 37.Be2 Qb1 38.Kf2+-) 34.Kf1 Qf3=; B) 28.Bd7+-) 1–0. jaskier (2115) – reddragonx (1785), internet, 2007.

5.e3 f5 6.Nf3 Ngf6 (6...Nh6 7.d4=) 7.Ng5 Qe7 8.Ne6 Qe6 9.Be2 Be7 10.d3 0-0 11.Nd2 f4 12.ef4 Ng4 (better 12...ef4!? 13.0-0 d5+=) 13.fe5+/- Rf2?? (better 13...de5 14.c5 a5+/-) 14.Ne4 (better 14.Bg4 Qg4 15.Kf2 Rf8 16.Nf3 Bh4 17.Kf1 Ne5 18.Be5 Rf3 19.gf3 Qf3 20.Kg1 de5 21.Qg2 Qe3 22.Kf1 Qd3 23.Qe2 Qf5 24.Kg2 Qg6 25.Kh3+-) 14...Rg2=+ 15.0-0-0? (better 15.ed6 Bh4 16.Kd2=+) 15...Ne3-+ (15...Nge5?! 16.Kb1-/+; 15...de5?! 16.Rdg1 Ne3 17.Qd2-/+; 15...Nde5?! 16.Rd2-/+) 16.Qc3 (16.Qd2 Nd1 17.Kd1 de5-+) 16...Re2 17.ed6 Bf6 (better 17...Rc2!? 18.Qc2 Nc2 19.Kc2 cd6 20.Rde1-+) 18.Nf6 Nf6 (18...gf6?! 19.Rde1 Ng4 20.Re2 Qe2 21.Qd2 Qd2 22.Kd2-+; 18...Qf6 19.Qf6 Nf6 20.Rde1 Re1 21.Re1-/+) 19.Rdg1? (19.Rde1 Neg4 20.Re2 Qe2 21.Qe1 Qe1 22.Re1 cd6 23.h3-+) 19...Rc2 20.Qc2 Nc2 21.Kc2 cd6 (21...Qd6 22.Rg2-+) 22.Re1 Qd7 23.Rhg1 Rf8 24.Re3 (24.Re2 Qa4 25.Kc3 a5 (25...Qa2?! 26.Ra1 Nd5 27.Kc2 Nb4 28.Kc3 Nd5 29.Kc2 Ne3 30.Kc3 Nd1 31.Rd1 Qa5 32.Kc2-+) 26.ba5 d5-+) 24...d5 (better 24...Qa4 25.Kc1 Ng4 26.Re2-+) 25.c5 (25.Reg3 g6 26.Rf1 Qa4 27.Kc1 Re8-+) 25...d4 26.Reg3 (26.Re5 Nd5 27.Kb1 Nb4-+) 26...Rf7 (better 26...Nh5 27.Rg4 Rf2 28.Kb1 Rh2 29.Ka1-+) 27.Bc1 (27.a3 Nh5 28.R3g2 Nf4-+) 27...Nd5 (27...Qa4 28.Kb1 Qb4 29.Ka1-+) 28.a3 (28.Kb3 Nc3 29.R3g2 Qa4 30.Kc4 Qa6 31.Kb3 Qd3-+) 28...Qa4 29.Kb1 (29.Kb2 Rf2 30.Ka1-+) 29...Qb3 (29...Nc3 30.Ka1 Qb3 31.Rg7 Rg7 32.Rg7 Kg7 33.Bh6 Kh6 34.c6 Qa3) 30.Ka1 Nc3 (30...Nc3 31.Rg7 Rg7 32.Rg7 Kg7 33.Bh6 Kh6 34.c6 Qa3) 0-1. bjoernsen (2280) - chess_bumer (2215), Rated Blitz game, lichess.org, 2016.

5.Nf3 Ne7 6.e3 g6 7.d4 ed4 (7...Bg7 8.de5 de5 9.Nc3=) 8.Bd4 (8.Nd4 Rg8+/-) 8...f6+= 9.Nbd2 Bg7 10.Qb2 0-0 11.Be2 Ne5 12.0-0 N7c6 13.Bc3 Nc4?? (better 13...Nf3 14.Nf3 Qe7=) 14.Bc4 d5 15.Be2 Qd6 (15...a6 16.Rad1+-) 16.b5 Ne5 17.Bb4 Nf3 18.Nf3 (18.gf3?! f5 19.Qa3 Qd8+-; worse 18.Bf3 f5 19.Qa3 Qd8+-) 18...f5 19.Qg7! (worse 19.Bd6 Bb2 20.Bf8 Ba1+-) 19...Kg7 20.Bd6 cd6 21.Nd4 Bf7 22.Rac1 Rac8 23.Rfd1 Rc5 24.Nb3 Rc1 25.Rc1 (25.Nc1?! Rc8+-) 25...b6 (25...Be6 26.Nd4 Kf6 27.Ne6 Ke6 28.Bf3+-) 26.Rc7 Kf6 27.Nd4 g5 28.f3 (28.Ra7 f4+-) 28...f4 29.Kf2 fe3 30.Ke3 Ke5 (30...Re8 31.Kd2+-) 31.Nc6 Ke6 32.Bd3 Bg6 33.Bg6 hg6 34.Ra7 Rf4 (34...Kf5 35.Ra6 Re8 36.Kd3+-) 35.Re7 (better 35.Nd4 Ke5 36.Re7 Kf6 37.Re6 Kg7 38.Rd6 Rh4+-) 35…Kf6 1-0. bjoerni (2165) - ROBISDIM (2140), Rated Blitz game, lichess.org, 2015.

5.Nf3 Ngf6 6.Ng5 Be7 7.e3 0-0 8.Nc3 h6 9.Ne6 fe6 10.Be2 d5 11.cd5 ed5 12.Qb3 c5 13.Nd5+/- Nd5 14.Qd5+- Kh8 15.b5 b6 16.Bf3+- Rc8 17.Qc4 Nf6 18.Be5 Bd6 19.Bc3 Qc7 20.g3 Rce8 21.Bc6 Re7 22.f4 Ng4? 23.0-0 1–0. marre – dimflo, internet, 2010.

5.e3 Be7 6.Nf3 0-0 7.Ng5 h6 8.Ne6 fe6 9.Nc3 Nbd7 10.Be2 d5 11.cd5 ed5 12.Qb3 c6 13.0-0 Kh8 14.f4 (14.Rac1 Rc8=) 14...Qc7 (14...e4 15.a3=+) 15.Rac1 ef4 16.Nd5 Nd5 17.Qd5 fe3 (17...cd5? 18.Rc7 Bf6 19.Rf4 Bb2 20.Rd7 Rf4 21.ef4+-) 18.de3 (18.Qe4 Nf6 19.Bf6 Bf6+=) 18...Qh2 (worse 18...cd5 19.Rf8 Rf8 20.Rc7+-) 19.Kh2 cd5 20.Rc7?? (better 20.Kg1 Bb4 21.Rc7=+) 20...Bd6-+ 21.Kh3 Bc7 22.Rc1 (22.Rf8 Rf8 23.Bf3 Re8-+) 22...Rac8 (better 22...Be5 23.Be5 Ne5 24.Rc5-+) 23.Bg4 Rfd8 (23...Rf7 24.Bd4 Re7 25.b5-+) 24.Rf1 (24.Be6 Nb6-+) 24...Bd6 (better 24...Rb8 25.Rf5-+) 25.Rf7 Bf8 (25...Bb4 26.Bd7 Rc7 27.Be6 Rf7 28.Bf7-+) 26.Bd7 Rc2 (26...Rc7!? 27.Be6 Rf7 28.Bf7 Bb4 29.Bd4-+) 27.Bd4 Ra2 (27...Bb4 28.Bf5 Rc4 29.Rg7 Rd4 30.Rh7 Kg8 31.ed4=) 28.Be6 Ra4 (28...b5 29.Bd5 Rd5 30.Rf8 Kh7 31.Rb8-+) 29.b5? (29.Rb7 a5 30.b5-/+) 29...Rb4?? (better 29...b6-+) 30.Rb7=+ Ra4 31.Ba7 Re8 (31...Re4 32.Bb6 Re6 33.Bd8 Re3 34.Kg4=) 32.Bd7 (32.Bd5 Re5 33.Bf3 Rb4+/-) 32...Ree4 (better 32...Re5!? 33.Bd4 Rh5 34.Kg4 Rg5 35.Kf3 Bd6=) 33.Rb8+/- Rh4 (better 33...Ra7!? 34.Rf8 Kh7 35.Bf5 g6 36.Be4 de4+/-) 34.Kg3+- Kg8? (better 34...Ra7 35.Rf8 Kh7 36.Bf5 g6 37.Kh4 Kg7+-) 35.Be6 Kh7 36.Rf8 Rae4 (36...g5 37.Bc5 Ra5 38.Rb8+- (worse 38.Bd5 Rb5 39.Rc8 Kg6+-)) 37.Bf5 (37.Bf5 g6 38.Be4 Re4 39.Bd4+-) 1-0. carlos78 (2365) - kaloqn937 (2105), Rated Blitz game, lichess.org, 2016.

5.Nf3 c6 6.e3 h6 7.Nc3 Na6 (7...Nbd7 8.d4=) 8.a3+= Nc7 (8...Be7 9.d4+=) 9.d4 ed4 10.Nd4 Bg4 (10...Be7 11.Be2+/-) 11.Bd3 c5 (11...Be7 12.h3 Bd7 13.0-0+/-) 12.Nf5 b6 (12...g6 13.Ne4 Ne4 14.Be4 Rg8+- (14...gf5?? 15.Bb7 Rg8 16.h3+-)) 13.0-0+- Bh5? (13...Bf5 14.Bf5 Be7+-) 14.bc5 dc5 (14...Bg6 15.Qa4 Qd7 16.c6+-) 15.Be4 Rb8 (15...Qd7 16.Rfd1 Bd1 17.Rd1 0-0-0 18.Rd7 Rd7+-) 16.Bc6 (16.Bc6 Nd7 17.f3+-) 1–0. pierre – anony, internet, 2015.

5.Nf3 Nc6 6.a3 a6 7.e3 Be7 8.Be2 0-0 9.0-0 Qd7 10.Nc3 Rfe8 11.d3 Bg4 12.Rab1 d5 13.b5+/- ab5 14.cb5 Ba3 15.bc6 Qc6 16.Ba3 Ra3 17.Rfc1 Raa8 18.Nb5 Qc2 19.Rc2 Bf3 20.Bf3 e4 21.Be2 Rab8 22.Rc7 Rec8 23.Rc8 Rc8 24.de4 de4 25.Nd6 (25.Nd6 Rc7 26.Rb7 Rb7 27.Nb7+-) 1–0. Bendig,Frank – Cavalcanti,Antonio, CiF, 2005.

5.Nf3 Nc6 6.b5 Nb4? 7.Qa4+- d5 8.a3 e4 9.Nd4 Nd3? 10.ed3 ed3 11.Ne6 Qe7 12.Bd3 Qe6 13.Kd1 Ng4 14.Bd4 b6 15.Re1 Nf2 16.Bf2 Qe1 17.Ke1 1–0. wiking – equipe, internet, 2010.

5.Nf3 Nbd7 6.e4 g6 7.Be2 Bg7 8.0-0 0-0 9.Nc3 Nh5 10.Nd5 f5 11.d3 c6 12.Nc3 Nf4 13.Bd1 Qe7 14.Bc1 g5 15.Rb1 Bf6 16.ef5 Bf5=+ 17.Ne4 Rac8 18.g3 Nh3=+ 19.Kh1 g4 20.Ng1 Ng1=+ 21.Kg1 d5 22.Nf6 Qf6 23.c5 Qg6 24.Be2 e4–/+ 25.Rb3 Ne5 26.Qc3 Nf3 27.Bf3= gf3 28.Bb2 Rcd8 29.Qd4 Qg4 30.h3 Qg6 31.h4 Qg4 32.Rd1 Rd7 33.Kf1 Re7=+ 34.Qh8 Kf7-+ 35.Qf6 Ke8 36.Qg5 Qh3 37.Ke1 e3! (37...e3 38.Qe3 Re3 39.Kd2 Re2 40.Kc1 Rf2-+) 0–1. Sternik,Ryszard – Kuczynski,W, Rzeszow, 1987.

5.Nf3 Be7 6.e3 =.

5.b5 Na5 6.Bc3 b6 7.c6 Nf6 8.Ba5 ba5 9.e3 d5 10.Nc3 Bb4 11.Nf3 e4 12.Nd4 Qd6 13.Be2 0-0 14.0-0 Bc3 15.dc3 Bc8 16.a4 Re8 17.Qc2 Re5 18.c4 Rg5 19.c5 Qe7 20.h4 Rg6= 21.h5 Rg5 22.f4 ef3 23.Nf3? Qe3-+ 24.Kh1?? Rh5 25.Nh2 Rh6 26.Bf3 Be6 27.Qc1 Qc1 28.Rac1 Re8 29.Rce1 Kf8 30.Kg1 Rh4 31.g3 Ra4 32.Rf2? Rc4 33.Be2 Rc5 34.Bf1 Ne4 35.Ra2 Nc3 36.Ra5 Ra8 37.Rea1 Ke7 38.Ra7 Ra7 39.Ra7 Nb5 40.Bb5? Rb5 41.Rc7 Kd6 42.Ra7 Kc6 43.Nf3 Kc5 44.Rc7 Kb4 45.Rc1 Bg4 46.Nd4 Ra5?? 47.Nc6+= Kb5 48.Na5 Ka5 49.Rc5 Kb4 50.Rd5 f5 51.Rd4 Kc3 52.Rf4 (52.Rf4 g5 53.Ra4=; 52.Rd7!?+=). revbodio – pdiddy, Live Game Caissa's Web, 2005.

5.b5=+ Nce7 6.Qa4 Bd7 7.e3 dc5 8.Be5 a6 9.Qa3 b6 10.ba6= Nc6 11.Qb2 f6 12.Bc3 Nge7 13.Bf6?? Rg8?? 14.Bg5+/- g6 15.Bc4 Bg7+/- 16.Qb3?? Ba1?? 17.Bg8+- Ra6?? 18.Qf7# 1–0. dado3 – rene822, Live Game Caissa's Web, 2004.

5.Qa4 dc5 6.bc5 c6-+ 7.d4 ed4 8.Bd4 Bc5 9.Bc5? Nc5-+ 10.Qb4 Qd6 11.Qb2 Nf6 12.Nd2 0-0 13.Rd1 Rad8 14.Ngf3 Bg4 15.Ne5 Bh5 16.f3? Nfd7 17.Ne4 Qe5 18.Qe5 Ne5 19.Rd8 Rd8 20.Nc5 b6 21.Nd3 Nd3 22.ed3 Bg6 23.Kd2 c5 24.Kc3 Rd4 25.Be2 b5 26.a3 a5 27.Rb1 b4 28.ab4 ab4 29.Kc2 Kf8 30.Ra1 f6 31.Ra8 Ke7 32.Kb3? Bd3 33.Bd3 Rd3 34.Kc4 Rc3 35.Kd5 Kf7 36.f4 Kg6 37.g4 h6 38.f5 Kh7 39.Ra5 b3 40.Ra3 c4 41.Ra7 b2 42.Rb7 Rb3 43.Rc7 b1Q 44.Rc4 Rb4 45.Kc5 Rc4 46.Kc4 Qc2 47.Kd5 Qh2 48.Kd4 Qf4 (49.Kd3 Qg4-+) 0–1. dado3 – britishbulldog, Live Game Caissa's Web, 2004.

5.d4 ed4 6.cd6 Bd6 7.Qd4 Ngf6 –/+.

5.e4 Ngf6 6.cd6 Bd6 7.a4 Bb4 8.Na3? 0-0 9.Qe2 a6 10.a5 Ba5 11.Nf3 c6 12.Ne5 Ne5 13.Nc2 Bc7 14.Nd4 Qe7 15.f4 Bg4 16.Qe3 Ned7 17.e5 Nd5 18.Qb3 Nc5 19.Qg3 Bd7 20.Bc4 Ne6 21.Nf5 a5 22.Ne7 Ne7 23.0-0 Nf5 24.Qc3 b5+/- 25.Bd3 a4?? 26.Bf5+- 1–0. rabelloenter (2095) – bturner (2130), net–chess.com, 2006.

5.e3 Be7 =.

5.g3 Nd7 6.Bg2= Rb8 7.Nf3 Be7 8.Nc3 Nh6 9.Qc2 0-0 10.0-0 a6 11.Nd5 c6 12.Ne7 Qe7 13.c5 dc5 14.bc5 Bf7 15.Qc3 Rfe8 16.Rfc1 Ng4 17.Nh4 Be6 18.h3 Ngf6 19.e4 f4 20.d4 fg3 21.fg3= ed4 22.Qd4 Nh5 23.Kh2 Qg5 24.Qd6 Rbd8 25.Nf3 Qg6 26.g4 Nhf6–/+ 27.Nh4 Qh6 28.Qg3=+ Bg4 29.hg4= g5 30.Rf1 gh4? 31.Qb3+- Kh8 32.Rf5 Ne5+/- 33.g5 Nfg4 34.Kh1 Qe6?? 35.Qh3 Qf5!–/+ 36.ef5 Nf2 37.Kh2 Nh3 38.Kh3 Kg8 39.Re1?? Rd3 (40.Kh4 Nf3 41.Bf3 Re1-+) 0–1. Majul,Isolina (2075) – Chaves,Joara (2050), Yerevan ol (Women), 1996.

5.g3 Nd7 6.Bg2= d5 7.cd5 Bb4 8.Nc3 =.

5.g3 Nd7 6.Bg2 Ngf6 7.Nc3 c6=+ 8.a4 Be7 9.e3 0-0 10.Nge2 d5=+ 11.c5 e4 12.0-0 Qe8. algernon (2320) – nbarletta (2100), net–chess.com, 2004.

5.g3 Nf6 6.b5 Nbd7 7.Bg2 Nc5 8.a4 Rc8 9.Nd2 Be7 10.Ngf3 0-0 11.0-0 Kh8 12.d4 ed4 13.Nd4 Bd7 14.a5 Nfe4 15.Ne4 fe4 16.e3 c6 17.Ba3 Bf6 18.Rc1 Re8 19.Bc5 dc5=+ 20.Nb3 cb5–/+ 21.Qc2 bc4 22.Qc4 Be6 23.Qb5 Qd3 24.Qd3 ed3 25.Nc5 d2 26.Rc2 b6 27.ab6 ab6 28.Ne6 Rc2 29.Nf4 Rc1 30.Bf3 Rec8 31.Bd1 Rd1! (31...Rd1 32.Rd1 Rc1-+) 0–1. Reimer,Karl – Jaeger,Erich (1805), Kurpfalz Seniors op, 2005.

5.g3 Nf6 6.Bg2 d5 7.c5 =+.

5.a3 ab4 6.ab4 Ra1 7.Ba1 Nf6 8.d3 Nc6 9.Bc3 Be7 10.Nf3 0-0 11.Be2 Nd7 12.Nbd2 f5 13.0-0 f4 14.Ne4 fe3 15.fe3 h6 16.d4 ed4 17.ed4 Bf5 (17...d5!? 18.Nf2 Bb4 (18...dc4? 19.d5+-) 19.Bb4 Nb4=) 18.Bd3 Nf6 (18...d5!? 19.cd5 Nb4 20.Bb4 Bb4+=) 19.Nf6 Rf6 20.d5 Ne5?? (better is 20...Bd3 21.Qd3 Ne5 22.Ne5 de5+/-) 21.Ne5+- de5 (21...Bd3 22.Nd3 (22.Qd3?! de5 23.Re1 Rf7+/-) 22...Rf1 23.Qf1+-) 22.Rf5 1–0. Fournier,Frederic (1900) – franexvulca (1825), Active, 2007.

5.a3 Nd7 6.Nc3 f5 7.Be2 Ngf6 8.Nf3 Nb6 9.d3 g6 10.0-0 Bg7 11.Ng5 Bd7 12.f4 0-0 13.b5 Qe7 14.Kh1 ef4 15.ef4 d5 16.Qc2 h6 17.Nh3 Ng4 18.Rf3 d4=+ 19.Nd5 Nd5–/+ 20.cd5 Bb5 21.a4 Rfe8 22.Ng1 Ba6 23.Ba3 Qd7 24.Qb3 Kh7 25.Rc1 Nf6 26.Rc5 b6 27.Rc6 Bb7 28.Rg3 Bc6 29.dc6 Qe6 30.Qc2 Nd5 31.Bc1 Rad8 32.Bf3 Nb4 33.Qd1 Nc6 34.Rg6 Kg6 35.Bh5 Kh7 36.Nf3 Re7 37.h4 Nb4 38.Ng5 hg5 39.fg5 Qe1 40.Qe1 Re1 41.Kh2 Rc1 0–1. Bohus,Aladar – Sorsak,Jozef Sr, Gemersky pohar–B, 1975.

5.Qa4 Bd7 6.b5 c5 7.Nc3 Nf6 8.Qc2 Be7 9.a4 Be6 10.Nf3 Nbd7 11.d3 Nb6 12.Be2 Qc7 13.e4 0-0 14.Bc1 h6 15.h3 Nh7 16.Be3 f5 17.Nd5 Nd5 18.ed5 Bd7 19.Bd2 b6 20.Nh2 Bf6 21.Rb1 Rae8 22.0-0 g5 23.Bh5 Re7 24.Qd1 Bg7 25.Qe1 Nf6 26.Bd1 Qd8 27.Bc3 Qe8 28.Ba5 ba5–/+ 29.Qa5 e4 30.b6 Bc8 31.Qd2 Bb7 32.a5 Kh8 33.Qa2 Qa8 34.Re1–/+ Rfe8 35.Qd2 Qa6 36.Ba4=+ Ra8 37.Bc6 Qa5 38.Qa5 Ra5 39.de4 Ne4–/+ 40.Nf1 Bd4 41.Ne3 Rf7 42.Nd1 Ra2 43.Kh2 Kg7 44.Rb3 Nd2 45.Rc3 Bc3 46.Nc3 Ra6 47.Be8 Rf8 48.Re7 Kg8 49.Bb5 Rb6 50.Na4 Rb5! 51.cb5 Bd5 52.Nc3 Bc4 53.b6 Rb8 54.b7 Ba6 55.Nd5 Rb7 56.Re6 Ne4 57.f3 Nf2 58.Rd6 Bb5 59.Rh6 Kg7 60.Rd6 Rd7 61.Nf6 Rd6 62.Nh5 Kg6 63.Ng3 Rd2 64.f4 gf4 65.h4 fg3 66.Kg3 Nh1 (66...Nh1 67.Kf4 Kf6 68.Ke3 Re2 69.Kf3 Rf2 70.Ke3 f4 71.Ke4 Ke6 72.g4 Ng3; 66...Ne4 67.Kh3 Bf1 68.h5 Kg5 69.h6 Rg2 70.h7 Re2#) 0–1. Bohus,Aladar – Janik,Anton, Gemersky pohar–B, 1975.

5.Qa4 Nd7 6.ba5 c6 7.d4 Ngf6 8.Nf3 e4 9.Nfd2 Ra5 10.Qc2 =.

5.ba5 Nf6 6.d4 ed4 7.ed4 d5 8.cd5 Nd5 9.Nf3 Bb4 10.Nbd2 0-0 11.Be2 Bc3 12.Qc2 Bb2 13.Qb2 Nf4 14.Nb3? (better is 14.Kf1–/+) 14...Re8-+ 15.Nc1 Ng2 16.Kd1 Bd5 17.Nd3 Nh4 18.Nde1 Nc6 19.Rg1 Bf3 20.Nf3 Nf3 21.Bf3 Nd4 22.Kc1 Ra5 (22...Ra5 23.Bd1 Rb5-+) 0–1. Legg,Jerry (1735) – Sijses,Wim, IECG, 2004.

5.b5 b6 6.Nf3 Nd7 7.d4 ed4 8.ed4 (8.Nd4 Qg5+/-) 8...Be7 (better 8...d5!?=) 9.d5+/- Bg4 10.Bg7 Bf6 11.Bh8 Bh8 12.Nbd2 Bc3? (better 12...Bf3 13.Nf3 Bc3 14.Nd2 Qe7 15.Be2 Ba1 16.Qa1 0-0-0+/-) 13.Rc1+- Qf6 14.Be2 Ne7 (14...Bb2 15.Ne4 Qe7 16.Rc2 Qe4 17.Rb2 Bf3 18.gf3+-) 15.0-0 0-0-0 (15...Bf5 16.Qb3 Bb2+-) 16.Ne4 Bf3 (16...Qg7 17.Nc3 Bh3 18.Ne1+-) 17.Nf6 (17.gf3?! Qg6 18.Kh1 Be5+-) 17...Be2 18.Qe2 Bf6 19.Qf3 (19.Qh5 Rf8+-) 19...Ng6 20.g3 Nge5 21.Qh5 Kb8 22.Kg2 Rg8 (22...h6 23.f4 Ng6 24.Rce1+-) 23.Rc2 (23.Qh7 Rg7 24.Qf5 Kc8+-) 23...Rg7 24.Qf5 Rg5 25.Qh7 Nc5 26.f4 Rg7 27.Qh8 (27.Qf5 Ned7+-) 27...Kb7 28.fe5 Rg3 29.hg3 Bh8 30.ed6 Be5 31.dc7 (31.d7!? Nd7 32.Rf7 Nc5+-) 31...f6 32.Re2 Kc7 33.Re5! fe5 34.Rf6 Ne4 35.Rc6 Kb7 (35...Kd7 36.Rb6 Nc3 37.c5+-) 36.g4 Ng5 37.Kg3 (37.d6 e4+-) 37...Ne4 (37...a4 38.d6 Ne6 39.d7+-) 38.Kh4 Nd2 39.g5 e4 40.g6 e3 41.Re6 Nc4 42.g7 Nd2 (42...Kc7 43.g8Q Ne5 44.d6 Kb7 45.Re7 Nd7 46.Rd7) 43.Re3 (43.Re7 Kc8 44.g8Q) 43...Nc4 (43...Ne4 44.Re4 Kc7 45.g8Q a4 46.Rc4 Kd7 47.Qe6 Kd8 48.Rc8) 44.Re7 Kc8 45.g8Q 1-0. jhonores (2180) - akrem19 (2175), Rated Blitz game, lichess.org, 2020.

5.b5 c6 6.a4 f6 7.Nf3 Nd7 8.d4 e4 9.Nfd2 d5 10.c5+= f5 11.Be2 Qf6 12.Qb3 Ne7 13.Nc3 g6 14.g3 Bg7= 15.h4 Nc5? 16.dc5=+ d4 17.Nce4 fe4 18.Bc4 Bc4 19.Qc4 0-0-0? 20.Bd4+- Rd4 21.ed4 Qd4 22.Rd1 Nf5 23.Qe6 Kb8 24.Ne4 Qa4 25.bc6 Qc6 26.Qc6 bc6 27.0-0 Kc7 28.Rfe1 a4 29.Nd6 Bc3 30.Re4 a3 31.Ra4+- Bb2 32.Nc4 Nd4? 33.Na3 Ne2 34.Kf1 Nc3 35.Ra7 Kb8 36.Rdd7 Ba3 37.Ra3 Ne4 38.Rda7 Rc8 39.R3a5 Nd2 40.Kg2 Nb3 41.Ra8 Kc7 42.R5a7 Kd8 43.Rc8 Kc8 44.Rh7 Nc5 45.Rg7 Nb3 46.Rg6 (46.Rg6 Kd7 47.g4+-) 1–0. Franck,Rudolf – Abtahi,Modjtaba, NRW–Liga I, 1989.

5.b5 d5 6.cd5 Qd5 7.Nf3 =.

5.b5 Nd7 6.Nc3 f5 (6...Nb6 7.d3=) 7.d4 e4 (7...Be7 8.Nf3=) 8.Nge2 (8.Nh3 Nh6+=) 8...Ngf6 (8...Bc4!? 9.Ng3 Bf1 10.Rf1 Qg5=+) 9.Nf4+= Bf7 10.Qb3 Be7 11.Be2 c6 12.a4 0-0 13.0-0 g5 14.Nh3 Ne8 15.g3 (15.Rad1 Ng7+=) 15...Rb8 (15...Rc8 16.Rab1=) 16.Rfd1 Nb6 17.Rac1 d5 18.cd5 (18.c5 Nc4=) 18...cd5 19.Rc2 Nd6 20.Rdc1 (20.Ba3 Ndc4 21.Bc5 Rc8=) 20...Ndc4 21.Ba1 (21.Bf1!?=+) 21...Rc8 22.Nd1 Bd6 (22...Be6 23.Kg2-/+) 23.Kg2 f4 (23...Qf6 24.Bc3=+) 24.ef4= gf4 25.Nf4 Bf4 (25...Qg5 26.Nh3 Qg6 27.Ne3=+) 26.gf4 Kh8 (26...Qf6 27.Nb2=) 27.Kh1 (27.Bc4 A) 27...dc4?? 28.d5 c3 29.Rc3+- (29.Nc3?! Kg8+-); B) 27...Rc4 28.Rc4 Nc4 29.Rc4 Rg8 30.Kh1 e3 31.Qe3 dc4 32.d5 Rg7 33.Bg7 Kg7 34.Qe5 Qf6+-) 27...Qh4 (27...Qf6 28.Ne3=) 28.Ne3 (28.Bc4 Nc4 29.Rc4 Rc4 30.Rc4 Bh5-/+) 28...Qf4= 29.Bc4 (29.Nc4 Nc4 (worse 29...dc4 30.d5 c3 31.Rc3+-) 30.Qg3 Qg3 31.hg3 Bg6 32.Rc4 dc4=+) 29...Nc4 (better 29...Qf3 30.Ng2 Rc4 (30...dc4?! 31.d5 Kg8 32.Qe3 Qe3 33.Ne3=) 31.Qf3 ef3=+) 30.Nd5?? (better 30.Nc4 Bh5 31.Ne5 Qc1 32.Rc1 Rc1 33.Kg2 Bf3 34.Kh3+=) 30...Bd5-+ 31.Qg3 Qg3 (better 31...e3 32.f3 Qf5-+) 32.hg3 (32.fg3 Rf3-+) 32...Rf3 33.Kg1 Rd3 (33...e3 34.fe3 Rg3 35.Kf2 Rf3 36.Kg1 Re3 37.Rg2 Bg2 38.Kg2-+) 34.Re2 (34.Rc3 Kg8-+) 34...Kg8 (34...Ra3 35.Rec2-+) 35.Bc3 (35.Ra2 Rf8-+) 35...Nb6 36.Bd2 (36.Rec2 Bb3 37.Ba5 Rc2 38.Rc2 Bc2 39.Bb6 Ba4 40.g4-+) 36...Rc1 37.Bc1 Na4 (better 37...Rd1 38.Kg2 Rc1 39.Re3-+) 38.Bd2 Nb6 (better 38...b6 39.Be3-+) 39.Ba5 Nc4 40.Bd8 (40.Bb4 Rd4 41.Re1 Ne5-+) 40...Rd4 (40...Rd1 41.Kh2 e3 42.g4-+) 41.Kg2 (41.Re1-+) 41...e3 42.Kh2 (42.Kh3 Be6 43.Kg2-+) 42...ef2 (better 42...Rd2 43.Re1 ef2-+) 43.Rf2 Ne5 44.Bg5 (44.Re2 Ng4 45.Kh3 Bf3 46.Re8 Kf7 47.Re7 Kf8-+) 44...Ng4 (better 44...Rd1 45.Kh3 Rh1 46.Rh2 Rh2 47.Kh2 Nf3 48.Kh3 Be6 49.g4 Ng5 50.Kg3 Ne4 51.Kf3 Nd6-+) 45.Kh3 (45.Kg1 Nf2 46.Kf2-+) 45...Nf2 46.Kh2 Ne4 (46...h5 47.Bf6 Rd1 48.g4 Ng4 49.Kg3 Nf6 50.Kf2-+) 47.Bf4 Nf6 48.Kh3 Nh5 (better 48...Rb4 49.Be5 Kf7 50.b6-+) 49.Kh4 (49.Bc7 Rb4-+) 49...Nf4 50.gf4 Rf4 51.Kg5 Re4 52.Kf6 h5 53.Kg5 (53.Kf5 h4 54.Kg6 h3 55.Kg5 h2 56.Kf5 h1Q 57.Kg5 Qc1 58.Kg6 Rg4 59.Kf5 Qf4) 53...h4 54.Kf5 h3 55.Kg5 (55.Kg6 h2 56.Kf6 h1Q 57.b6 Qh6 58.Kf5 Qf4 59.Kg6 Bf7) 55...h2 56.Kf5 (56.Kf6 h1Q 57.b6 Qh6 58.Kf5 Qf4 59.Kg6 Bf7) 56...h1Q 57.Kg5 (57.Kg6 Bf7 58.Kf5 Qf3 59.Kg5 Qf4) 57...Qh4 58.Kf5 (58.Kg6 Qg4 59.Kf6 Re6) 58...Qg4 59.Kf6 Re6 0-1. ClayPigeons (2165) - Erik517407 (2320), Rated Bullet game, lichess.org, 2020.

5.b5 Nd7 6.d4 f6 (6...Ngf6 7.Be2=) 7.Bd3 Nh6 8.Nd2 Be7 9.Qc2 f5 10.d5 Bf7 11.a4 e4 (11...0-0 12.Be2= (worse is 12.Bf5 Nf5 13.Qf5 Bg6–/+)) 12.Bg7 (12.Be4!? Bf6 13.Bf3+/-) 12...ed3= 13.Qd3 Bf6 14.Bh8 Bh8 15.Rd1 (15.Rb1 Qg5 16.g3 Qe7=) 15...Nc5 16.Qc2 Bg6 17.Ngf3 (17.Nh3 f4 18.e4 Qh4=) 17...f4 18.e4 Qe7 19.0-0 b6 (19...Be4?? 20.Ne4 Ne4 21.Rfe1+-; worse is 19...Ne4 20.Rde1 0-0-0 21.Ne4+-) 20.Rfe1 0-0-0 21.Nb3 Bh5 22.Nc5 Bf3 23.gf3 bc5 (23...dc5 24.Kh1+=) 24.Qd2 (24.Kh1 Qh4+=) 24...Qg5 25.Kf1 Qh5 26.Qa5 Qf3 27.Qa6 Kd7 28.Qc6 Ke7 29.e5 Qh1 30.Ke2 Qe4 31.Kf1 Qc4 32.Kg1+- Rg8 33.Kh1 Be5 34.Re5 de5 35.d6 cd6 36.Qd6 Kf7 37.Qd7?? Kf6-+ 38.Rd6 Kg5 39.Qe7 Kg4 40.h3 Kf3 41.Qb7 Ke2 42.Kh2 f3 43.Qd5 Rg2 44.Kh1-+ 0–1. Enxtuul,A (1975) – Ni,V (2165), 1st WMSG Rapid Team w, Beijing CHN, 2008.

5.b5= Nd7 6.Nf3 f5 7.d4+= e4 8.Nfd2 d5 9.Nc3 Ngf6 10.Qb3 Nb6 11.c5 a4 12.Qc2 a3 13.Bc1 Nc4 14.Nc4+/- dc4 15.Nb1 Nd5 16.Bc4 Nb4 17.Qc3 Bc4 18.Qb4 Bd3 19.Qb3 Qg5+= 20.Qe6 Be7 21.Nc3 Qg2?? 22.Nd5+- Qg5 23.Nc7 Kd8 24.Na8 Qg4 25.Qb6 Ke8 26.Nc7 Kd7 27.c6 bc6 28.Qc6 Kc8 29.Ne6 (29.Ne6 Kb8 30.Qb6 Ka8 31.Nc7#) 1–0. Svitek,Volker – Kirwald,Franz, USV Potsdam–SK Sieke, 1994.

5.b5 Be7 6.a4 (6.d4 ed4 7.Bd4 Nf6=) 6...Nf6=+ 7.Na3 0-0 8.Nf3 Bf5 9.d4 e4 10.Nd2 d5 11.cd5 (11.Be2 Nbd7=) 11...Qd5 (11...Nbd7 12.Bc4=) 12.Bc4 Qd6 13.Bb3 Nd5 14.Nac4 Qg6 15.g3 Qe6 16.Ne5 f6 (16...Nd7!?=+) 17.f3 fe5 18.fe4 Be4 19.Ne4 Bb4 20.Nc3 (20.Bc3 c6 (worse 20...Bc3 21.Nc3 c6 22.de5+-) 21.Qd3 Nd7=) 20...c6 21.Bd5? (21.de5 Nd7 A) 22.Bd5? cd5 23.Qd4 Nc5-+ (23...Ne5?! 24.0-0-0-/+; 23...Qe5?! 24.Qe5 Ne5 25.Ke2-/+); B) 22.Qd4+=) 21...Qd5-+ 22.Kd2 ed4 23.ed4 Qd4 (23...Rf3 24.Kc2 Qf5 25.Kb3 cb5 26.Rf1 ba4 27.Ka2 Rf1 28.Qf1 Qe6 29.d5-+) 24.Kc1 Qc4 (24...Bc3?! 25.Qd4 Bd4 26.Bd4 cb5 27.ab5-/+) 25.Qe2 cb5 26.ab5 Qe2 (26...Qc5!? 27.Qd3 Bc3 28.Bc3-+) 27.Ne2 Rf2 28.Nf4 Bd2 29.Kb1 Bf4 30.gf4 Rf4 31.Rd1 (31.Rc1 g6-/+) 31...Rf5 32.Rd8 Rf8 33.Rd5 (33.Rf8 Kf8 34.Ka2 Nd7-/+) 33...g6 (33...a4 34.Be5 h6 35.Ka2-/+) 34.Ra4 Rf1 35.Ka2 Rf7 (35...Kf7 36.Rd8 Rf2 37.Rc4+=) 36.Rad4 (36.Rd8 Rf8 37.Rad4 a4+=) 36...Rf8 (36...Rf2 37.Rd8 Kf7 38.Rh8=) 37.h4 (37.Rd8!?+/-) 37...a4 38.Ba3 (38.Rd8 Ra5=) 38...Rf2 39.Kb1 (better 39.Rd2!? Rd2 40.Rd2=) 39...Rf1 40.Kc2 Kf7 (40...Kg7 41.Rd8 Kh6 42.Bd6=) 41.Re4 (41.Rd8 Kf6=) 41...Rf2 (41...Rf3 42.Bb4 a3 43.Rd8=+) 42.Kd1 (42.Kb1 Rf5 43.Rf5 gf5 44.Re7 Kg6 45.Rb7 f4=) 42...Kf6 (42...Rf3 43.Bb4 Kf6=) 43.Rd8+= Rf5 44.Be7 Kg7 45.Bg5 (45.Bd6 Rb5 46.Re7 Kh6 47.Bb8 g5 48.Rd6 Kh5 49.Rh7 Kg4 50.Rd4 Kf5+=) 45...a3= 46.Bd2?? (better 46.Re7 Rf7 47.Ree8 Rf1 48.Ke2=) 46...a2-+ 47.Bc3 Kf7 (47...Kh6 48.Re7 a1Q 49.Ba1 Ra1 50.Kc2 Rf2 51.Kb3 Rf3 52.Kc4 Ra4 53.Kc5 Rf5 54.Kb6 Rh4 55.Rb8-+) 48.Ba1? (48.Rh8 a1Q 49.Ba1 Ra1 50.Kd2 Rd5 51.Kc2-+) 48…Rf1 (48...Rf1 49.Re1 Re1 50.Ke1 b6-+) 0-1. foytik (2365) - Dariush2020 (2205), Rated Classical game, lichess.org, 2016.

5.b5 Nf6 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 e5 5.c4 Be6).

5.b5 g6 6.d4 f6 7.h4 h5 8.e4 Nd7 9.Nf3 Nh6 10.Bd3 Ng4 11.Nbd2 Bf7 12.a4 Bh6 13.d5 Nc5 14.Bc2 Qe7 15.Qe2 0-0 16.Nb3 Nb3 17.Bb3 b6 18.Bc1 Be8 19.Bh6 Nh6 20.0-0-0 Bd7 21.Qd2 Kg7 22.Bc2 Ng4 23.Rdf1 Nh6 24.Rhg1 f5 25.Ng5 fe4 26.Be4 Nf5 27.Bf5 Rf5 28.g3 Raf8 29.f3 ½–½. Shilov,Boris (2025) – Kohanov,Boris (2025), Perm AVGRT op, 2006.

5.a4 c6 6.Nf3 (6.a5 A) 6...Nd7 7.Nf3 (7.Nc3 Ngf6 8.Nf3 d5 9.Qb3 Bd6) 7...Ngf6 8.Nc3 d5 9.Qb3 Bd6; B) 6...Nf6 7.Nf3 Nbd7 8.Nc3 d5 9.Qb3 Bd6; 6.Nc3 Nd7 (6...Nf6 7.Nh3 d5 8.Ng5 Bb4 9.Qb3 Qb6; 6...a5 7.b5 Nf6 8.Nf3 Nbd7 9.Be2 Be7) 7.Nf3 Ngf6 8.a5 d5 9.Qb3 Bd6) 6...b6 (6...Nd7 7.a5 c5 8.bc5 Nc5 9.Nc3 Nf6; 6...a5 7.b5 Nf6 8.Nc3 Nbd7 9.Be2 Be7; 6...Nf6 7.Nc3 (7.a5 Nbd7 8.Nc3 d5 9.Qb3 Bd6) 7...a5 8.b5 Nbd7 9.Be2 Be7) 7.Be2 (7.Nc3 Nd7 8.Be2 Be7 9.0-0 Nh6) 7...Be7 (7...a5 8.b5 Nf6 9.Nc3 Be7) 8.Nc3 (8.0-0 Nf6 9.Ng5 a5) 8...Nd7 (8...Nh6 9.d4 0-0) 9.d4 (9.0-0 Nh6) 9...Ngf6 10.b5 c5 11.Qc2 h6 12.0-0 a5 (12...0-0!?+=) 13.de5+- Ne5 14.Ne5 de5 15.Rad1 Qc7 16.e4 0-0 17.Nd5 Bd5 18.ed5 (worse 18.Rd5 Nd5 19.cd5 Qd6–/+) 18...Bd6 19.g3 Qd7 20.Kg2 Rae8 21.Rfe1 Nh7 22.Bd3 f5 23.f3 g6 (23...Ng5!? 24.Bc1 e4 25.fe4 fe4=+) 24.Re2 Nf6 25.Rde1 Qc7 26.Qb1 Rf7 27.Qa1 Nd7 28.Qc1 Kh7 29.Qd2 Rfe7? (better 29...Bf8!?+-) 30.Bc1+- g5 (30...f4 31.gf4 ef4 32.Re7 Re7 33.Re7 Be7 34.Qf4 Qf4 35.Bf4+-) 31.Bf5 Kg7 32.h4 e4 33.Be4 (better 33.Re4!? Re4 34.Re4 Re4 35.fe4 Be7+-) 33...Bg3 34.Bb2 Be5?? (34...Kf8 35.hg5 Be1 36.Re1 Qd6+-) 35.hg5 (35.d6 Qb8 36.de7 Bb2 37.Qd7 gh4+-) 35...Bb2 (35...Qd6 36.gh6 Kh8+-) 36.gh6 Kh8 37.Qb2 (37.d6!? Qb8 38.Qb2 Re5+-) 37...Qe5 38.Qe5 Re5 39.f4 Rh5 40.Rh1 (better 40.h7 Rf8+-) 40...Nf6 (40...Rh1 41.Kh1 Nf6 42.Bd3 Re2 43.Be2+-) 41.Bf3 (41.Rh5!? Nh5 42.Kf3 Rg8+-) 41...Re2 (41...Rg8 42.Kf1 Rh1 43.Bh1+-) 42.Be2 Rh1 43.Kh1 Kh7 44.Bd3 (better 44.d6 Kh6 45.Bg4 Kg7+-) 44...Kh6 45.d6 Kg7 46.Kg2 Kf7 47.Bf5 Ke8 48.Kh3 Kd8 49.Kh4 (better 49.d7 Ke7+-) 49...Ne8 50.d7 Nd6 51.Be6 Ne4 52.Kh5 Ke7 53.Kg6 Nd6 54.f5 Ne4 55.f6! Nf6 56.d8Q! Kd8 57.Kf6 Kc7 58.Bd5 (58.Ke7 Kb8 59.Kd6 Kb7 60.Kd7 Ka7 61.Kc7 Ka8 62.Kb6 Kb8 63.Kc6 Ka8 64.Kc7 Ka7 65.b6 Ka6 66.Bc8) 58...Kd7 (58...Kd6 59.Be4 Kc7 60.Ke5+-) 59.Kf7 Kc8 60.Ke7 Kc7 61.Be4 Kc8 62.Kd6 Kb8 63.Kc6 Ka7 64.Bf5 Kb8 (64...Ka8 65.Kb6 Kb8 66.Kc6 Ka8 67.Kc7 Ka7 68.b6 Ka6 69.Bc8) 65.Kb6 (65.Kb6 Ka8 66.Kc7 Ka7 67.b6 Ka6 68.Bc8) 1–0. Dumontelle,Joe – Novak,Z, May, 1979.

5.a4 Nd7 6.Nf3 Be7 7.Nc3 (7.d4 Ngf6=) 7...Bf6 (7...Ngf6 8.Ng5=) 8.Ne4 Ne7 (8...a5 9.b5=) 9.Be2 (9.d4 ed4 10.Nf6 Nf6 11.Nd4 0-0+=) 9...0-0 10.0-0 Kh8 (10...Nc6 11.b5 Nb4 12.Bc3+=) 11.Bc3 (better is 11.d4 ed4 12.Nf6 Nf6 13.Nd4+=) 11...c6 (better is 11...Nf5!?+=) 12.Nd6+/- Qc7 (12...b6 13.d4 ed4 14.Nd4+/-) 13.Ne4+- Bf5 (13...Ng6!? 14.Nf6 Nf6 15.d4+/-) 14.Nf6 gf6 15.Nh4 (15.d4 Rg8+-) 15...Be6 16.Qc2 f5 (16...Rg8 17.d4+-) 17.f4 (17.d4 f6+-) 17...Ng6 (17...f6 18.d4+-) 18.Nf5 f6 19.g3 (19.c5 a5+-) 19...Bf5 (19...ef4 20.ef4 Rg8 21.Kh1+-) 20.Qf5 e4 (20...Rae8 21.Bg4 Rd8 22.Qh5+-) 21.Bg4 Rad8 22.Qe4 Rde8 (22...c5 23.b5+-) 23.Qd3 Rd8 24.Qe2 (24.Qf5 Ne7 25.Qe6 Ng8+-) 24...Kg7 (24...c5 25.a5+-) 25.e4 Rde8 (25...Rfe8 26.d4+-) 26.Bf5 Qb6 (26...c5 27.a5+-) 27.d4 (better is 27.c5 Qd8 28.Qg4+-) 27...c5 (27...Qc7+-) 28.Bd7 cd4 29.c5 Qc7 (29...Qd8 30.Be8 dc3 31.Bg6 Qd4 32.Qf2 Qf2 33.Kf2 hg6 34.Rac1+-) 30.Be8 Re8 (30...dc3 31.Bg6 hg6 32.Rfc1+-) 31.Bd4 Qe7 (31...Qc6 32.Rfe1+-) 32.e5! Qd7 (32...fe5 33.fe5 Passed pawn) 33.ef6 (better is 33.Rad1 Kg8+-) 33...Kf7 (33...Kf8 34.Qd2 Nh8 35.f7+-) 34.Qc4 Qe6 (34...Kf8 35.c6! Qf7 36.Qf7 Kf7 37.Rac1 bc6 38.Rc6+-) 35.Qe6 Re6 36.f5 Re4 37.fg6 hg6 38.Rad1 g5 39.Rfe1 Re6 40.Re6 Ke6 41.Re1 Kf7 42.Re7 Kf8 (42...Kg8 43.c6 bc6 44.Rg7 Kf8 45.Bc5 Ke8 46.Ra7 Kd8 47.f7 g4 48.f8Q) 43.Rb7 g4 44.c6 1–0. Janek – Guste, internet free game, 2017.

5.Nc3 Nf6 6.Nf3 Be7 7.Be2 0-0 8.0-0 Nbd7 9.Qc2 c6 10.d4 ed4 11.Nd4 Qc7 12.h3 b5 (12...c5!? 13.Ne6 fe6=) 13.cb5+/- cb5 14.Ne6 (14.a4!?+/-) 14...fe6= 15.Qb3 d5 16.Rac1 Qd6 17.a3 Nb6 18.Rfd1 Rac8 19.Ba1 Nc4 20.Rb1 Qb6 21.Bc4 Rc4 22.Ne2 Ne4 23.f3 Rc3 24.Bc3 Qe3 25.Kh1 Nf2 26.Kh2 Bd6 (26...Qe2 27.Re1 Bd6 28.Kg1 Nh3 29.Kh1–/+) 27.Ng3 Bg3 28.Kg3 Ne4 (28...Rf3 29.Kh2 Qf4 30.Kg1 Nh3 31.Kh1 Qh4 32.gf3 Nf4 33.Kg1 Qg3 34.Kf1 Qf3 35.Ke1 Qe2) 29.Kh2 Qf4?? (better is 29...Rf3 30.Rb2 Qf4 31.Kh1 Rc3-+) 30.Kg1= Qe3 31.Kh1 (31.Kh2 Nc3 32.Rdc1 Qf4 33.Kh1 Nb1 34.Qb1–/+) 31...Rf3 (31...Nf2 32.Kh2 Nd1 33.Rd1+=) 32.Kh2?? (better is 32.Rb2+=) 32…Rh3!! (32...Rh3 33.gh3 Qg3 34.Kh1 Nf2) 0–1. Dzera,Evgeniy (2175) – Geshko,Aleksey, Konakovo RUS, Open, 2011.

5.Nf3 Nc6 6.a3 e4 7.Nd4 Nd4 8.Bd4 c5 9.bc5 dc5 10.Be5 Nf6 11.Nc3 Ng4 12.Bg3 f5 13.Be2 Nf6 14.Rc1 Qa5 15.Qa4 Qa4 16.Na4 Nd7 17.Rb1 0-0-0 18.f3 Be7 19.Nb6 Nb6 20.Rb6 Bd7 21.fe4 fe4 22.0-0 Bc6 (better is 22...h5 23.Be5 Bf8+/-) 23.Bg4+- Bd7 24.Rfb1 Bg4 25.Rb7 h6?? (25...Bd6 26.Bd6 Rd6 27.Rb8 Kc7 28.Rh8 Rd2+-) 26.Rc7 1–0. Fournier,Frederic (2285) – jungleboy(C) (1775), Active, 2007.

5.Nf3 Nc6 6.a3 Nf6 7.Be2 Be7 8.d3 0-0 9.0-0 d5 (9...Re8 10.Ng5=) 10.cd5 (10.Ne5 Ne5 11.Be5 dc4 12.dc4 c5+/-) 10...Nd5 (10...Qd5 11.Ng5=) 11.Nc3 (11.Ne5!? Ne5 12.Be5+=) 11...f6 12.Nd5 Bd5 13.Rc1 Bd6 14.e4 Bf7 15.d4 ed4 16.Nd4 Nd4 17.Bd4 Bg6 18.f3 Re8 19.Qb3 Kh8 20.Rfd1 Qe7 21.Bf2 b6 22.Bc4 a5 23.ba5 Ra5 24.a4 Rea8 25.Bb5 Bf7 26.Qd5?? (better is 26.Qc3=) 26...Bd5-+ 27.Rd5 R5a7 28.Rcd1 Rd8 29.g3 h6 30.Kg2 Raa8 31.R5d3 Bc5 (31...Be5 32.Rd5-+) 32.Rd8 Rd8 33.Bc5 bc5 34.Ra1 g5 35.Bc6 h5 36.a5 Qd6 37.Bd5 c6 38.Bc4 Qd2 (38...Qd2 39.Kf1 Qc3-+) 0–1. Fournier,Frederic – Eftelya (1650), ICC, 2005.

5.Nf3 Nc6 6.d4 ed4 7.Nd4 Nd4 8.Bd4 =.

5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 a6).

5.Nf3 g6 6.Be2 Bg7 7.0-0 Ne7 8.d3 0-0 9.a3 Nf5 10.Nbd2 Nc6 11.e4 Nfd4 12.Nd4 Nd4 13.Nf3 Ne2 14.Qe2 b5 15.cb5 ab5 16.Rfc1 Rc8 (16...f5!?+=) 17.d4= Bc4 18.Qd2 f6 19.de5 de5 20.Rd1 (20.a4!?=) 20...Qd2+= 21.Rd2 Rfd8 22.Rad1 Rd2 23.Rd2 (23.Nd2? Rd8 24.Bc1 Bh6-+) 23...c6 24.Rd1 Bh6 25.g3?? (25.Rd6 Kf7 26.Rd7 Kg8=) 25...Bf8?? (better is 25...Be2 26.Rd6 Bf3 27.Rf6 Be4 28.Be5 Bc1-+) 26.Nd2 Be2 27.Re1 Bg4 28.Nb3 Be6 29.Na5 c5 30.bc5 Rc5 31.Rc1 Rc1 32.Bc1 Bc4 33.Nc6 Bc5 34.Nb4 Bb4 (34...Kf7 35.Kg2+=) 35.ab4= Kf7 36.f3 Ke6 37.Kf2 f5 38.Ke3 g5 39.ef5 Kf5 40.Bb2 h6 41.Bc3 Bd5 42.Bd2 e4 (better is 42...g4!? 43.f4 e4+=) 43.fe4 Be4 44.Kf2 (better is 44.g4!? Ke5 45.Bc3 Kd5 46.Bg7+/-) 44...Kg4 45.Kg1 Kf3 46.Bc3 g4 47.Bg7 h5 48.Bf8 Bd3 49.Bc5 Be2 50.Be7 ½–½. Fournier,Frederic (1675) – RECONCO, Active (5/0), 2005.

5.Nf3= h6 6.a3 Nf6 7.Be2 Be7 8.0-0 Nbd7 9.d4+= ed4 10.Nd4 Nb6 11.Ne6+/- fe6 12.Bh5 Kf8 13.Be2 Rc8 14.Nd2 c5 15.e4 cb4 16.ab4 Nfd7 17.f4 d5 18.c5 Na8 19.f5 ef5 20.Rf5 Kg8 21.ed5 Bg5 22.d6 b6 23.Qb3 Kh7 24.Rf7 Rg8 25.Ba6 Rb8 26.Qd3 Kh8 27.c6 (27.c6 Qe8 28.Rd7 (28.cd7?! Qf7 29.Bc4 Qd7+-) 28...Qe3 29.Qe3 Be3 30.Kh1 Bd2 31.Bc4 Bb4 32.c7+-) 1–0. Wallace,Gary – Buckingham,William, corr or01–011 E–mail, 2002.

5.Nf3 h6 6.Be2 Nf6 7.0-0 Nbd7 (7...Be7 8.Nc3=) 8.d4+= e4 9.Nfd2 d5 10.c5 c6 11.a4 Be7 12.Nc3 White prepares b5 12...0-0 13.b5 ab5 14.ab5 Ra1 15.Qa1 Bg4 16.Qa7 (16.f3 ef3 17.Nf3 Re8+=) 16...Be2= 17.Ne2 Qb8 (17...cb5 18.Qb7 Qb8 19.Qb8 Nb8 20.f3 ef3 21.gf3+=) 18.Ra1 (18.b6 Re8+=) 18...cb5= 19.Bc3 (19.Qb8 Rb8 20.Ra7 Kh7=) 19...b4 (19...Qc8 20.Rb1 Qc6 21.Qa5=+) 20.Bb4 b6 21.Nb3 bc5 (21...Rc8 22.Qa3=) 22.Bc5 Nc5 23.Nc5 Qa7 24.Ra7 Bc5 25.dc5 Rc8 26.Ra5 Nd7 27.Nc3 Nc5 28.Nd5 Nb3 (better 28...Kh7!? 29.h4 Nd3=) 29.Ne7+/- Kf8 30.Nc8 Na5 31.Nd6 Ke7 32.Ne4 Nb3 33.Kf1 f5 34.Nc3 Kd6 35.Ke2 Kc5 36.Kd3 Nc1 (36...Kd6 37.f4 g5 38.g3+/-) 37.Kc2+- Nb3?? (better 37...Kc4 38.Nb5 Kb5 39.Kc1 Kc4+-) 38.Kb3 1-0. foytik (2145) - ajosilso (2140), Rated Blitz game, lichess.org, 2016.

5.a3 c5 6.b5 Nc7 7.Nf3 a6?? (7...e4 8.Ng1=) 8.a4?? (better is 8.b6+-) 8...ab5+= 9.ab5 Ra1 10.Ba1 d5 (10...e4 11.Ng1=) 11.d3 (11.Ne5 Nf6+/-) 11...dc4 12.dc4 Qd1 13.Kd1 f6 14.Nc3 Ne7 15.Kc2 Nf5 16.Be2 Be7 17.Rd1 0-0 18.Bb2 Rd8 19.Rd8 Bd8 20.h3 g6 21.Nd2 h5 22.Nde4 Be7+= 23.Na4 b6? 24.Nb6+- Nd6 25.Nd6 Bd6 26.Ba3 f5? 27.Na4 f4 28.ef4 ef4 29.Bc5 Bc5 30.Nc5 Bf5 31.Bd3 Bd3 32.Kd3 g5 33.f3 h4 34.Kd4 Kf7 35.Ke5 Ke7 36.b6 Ne8 37.b7 Nd6 38.b8Q Nc4 39.Kf5 Nd6 40.Kg5 Nf7 41.Kf4 (41.Kf4 Kf6 42.Qb6 Kg7 43.Ne6 Kg6 44.Ng5 Kg7 45.Qc7 Kh6 46.Nf7 Kh5 47.Ng5 Kg6 48.Qf7 Kh6 49.Qh7; 41.Kg6 Nd6 42.Qc7 Ke8 43.Ne6 Ne4 44.Qd8) 1–0. Fournier,Frederic – juanjp, Active, 2007.

5.a3 c5 6.bc5 Nc5 7.d4 ed4 8.Bd4 Ne4 9.Bd3 Nc5 10.Nc3 Nd3 11.Qd3 d5 12.cd5 Bd5 13.Nd5 Qd5 14.Nf3 Rd8 15.0-0 Bc5?? 16.Qb5+- Qd7 17.Qc5 b6 18.Qe5 (18.Qe5 Ne7 19.Qg7+-) 1–0. Trkn – guest765, ICC, 2004.

5.Nc3 Qd7 6.Qf3 (6.Nf3 Nc6+=) 6...c6= 7.b5 (7.d4 Nf6 8.de5 de5=) 7...Nf6 8.a4?? (8.Rc1 Bg4 9.bc6 Nc6-+) 8...a6 (better 8...Bg4-+) 9.bc6 (9.Qg3 Nh5 10.Qf3 Bg4=+) 9...Nc6 10.g3 (10.Qg3 Nh5 11.Qf3 Bg4=+) 10...Bg4 (10...Be7 11.Bg2 Rc8 12.Qe2–/+) 11.Qg2=+ g6 (11...Rc8 12.f4=+) 12.Be2 (12.Nd5 Nd5 13.cd5 Ne7+-) 12...Be2 (12...Rc8 13.f4=+) 13.Nge2= Bg7 (13...Rc8 14.Ba3=) 14.0-0 (14.Rb1 Qc7=) 14...0-0 (14...h5 15.Rab1=) 15.f4 (15.Rab1 Rac8=) 15...ef4 (15...Rfe8 16.d3=) 16.Nf4 Rae8 17.Rab1 Ne5 18.Qe2 (18.Nfd5 Nd5 19.Nd5 Nc4 20.Bg7 Kg7+=) 18...Rc8 (18...Qg4 19.d3=) 19.d3+- Neg4 (19...Rb8 20.d4 Neg4 21.e4+=) 20.Nfd5 (20.Ncd5 Rb8+-) 20...Nd5 (20...Rb8!?+-) 21.Nd5+- Rb8 22.h3 (better 22.Bg7 Kg7 23.Nb6+-) 22...Bb2?? (better 22...Ne5 23.d4 Nc6+-) 23.Qb2+- (23.Qg4?! Qg4 24.hg4 Bg7+-; 23.hg4?! Be5+-) 23...Ne5 (23...f6 24.hg4 Qg4+-) 24.Nf6 Kg7 25.Nd7 1–0. jaddwarrior (2050) – BLACKDEVILL, ChessWorld.net, 2013.

5.Nf3 Nf6 6.Qb3 Be7 7.d4 e4 8.Nfd2 d5 9.Na3 0-0 =+. vampierketjen – bules, net–chess.com, 2003.

5.b5 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 b6 (8...Nd7!?=) 9.Nc3+= Ne7 10.Nf3 Nf5 11.Bd3 g6 12.Ne4 Be7 13.Qa4 (13.Bc3 0-0 14.Qe2 Nh4 15.Nh4 Bh4=) 13...Nd7+= 14.Bc3 0-0 15.0-0 d5 16.cd5 Bd5 17.Ne5 Ne5 18.Be5 f6 (18...c4!? 19.Bc2 Nh4=) 19.Bc3+/- Nh4 (19...Qd7!?+/-) 20.Bc4+- Bc4?? (better is 20...f5 21.Qa2 Bf7+-) 21.Qc4 Kh8 22.Ng5 h6 (22...Nf5 23.Ne6 Nd6+-) 23.Qh4 Kg8 (23...h5 24.Ne6 Qb8 25.Nf8 Qf8 26.Ra1+-) 24.Qh6 f5 25.Qg6 1–0. Janek – Bonnie, internet, 2016.

5.bc5 dc5 6.Be5 Nc6 7.Bb2 Nf6 8.Nf3 h6 9.Be2 Be7 10.0-0 0-0 11.d4 cd4 12.Nd4 Nd4+= 13.Bd4 Qa5 14.Nc3 Rfd8 15.Qc2 Rac8 16.Bd3 Bc4= 17.Bf5 Bf1–/+ 18.Bc8 Bg2 19.Kg2 Rc8 20.Qb2 b6 21.Rc1?? Ba3-+ 22.Qd2 Bc1 23.Qc1 Ne4! 0–1. gtate (1930) – rodnel (2000), net–chess.com, 2006.

5.bc5 dc5 6.Be5 Nc6 7.Nf3 Nf6 +=.

5.bc5 dc5 6.Be5 Nc6 7.Bg3 Qf6 (7...Bd6!?+=) 8.Nc3+/- Nh6 9.Nd5 Bd5 10.cd5 Bd6?? (better is 10...Nb4 11.Rb1 Bd6+/-) 11.dc6 bc6 (11...Bg3 12.hg3 Qc6 13.Rc1+-) 12.Nf3 Bg3 13.hg3 0-0 14.Rc1 Ng4 (14...Rfb8 15.Rc5 Rb2 16.Qa4+-) 15.Rc5 Rab8 16.Rh4 Ne5 (16...Nh6+-) 17.Ne5 Rb6 (17...Rb7 18.Bc4 h6 19.d4+-) 18.Bc4 Rb4 (18...Rb7 19.Qh5 h6 20.Rf4+-) 19.Qh5 g6 20.Qh7# 1–0. Mar Ram – Mustafa Kucukahin, internet, 2010.

5.bc5+= Nc6 6.cd6 (6.d4 Bf5 (6...ed4 7.ed4 Qf6 8.Qd2 d5) 7.cd6 (7.d5 Na5 8.Bc3 Bd7) 7...ed4 8.ed4 Qd6 9.Qe2 Kd7+-; 6.Qb3 dc5 7.Nh3 Rb8 8.Nc3 h6) 6...Bd6+= 7.Nf3 (7.Nc3 Nf6 8.Nf3 0-0) 7...f6 (7...Bg4 8.h3 Bf5+- 0.96/9 (8...Bf3 9.Qf3+=); 7...Nf6 8.Nc3 0-0) 8.Nc3 Nge7 (8...Rc8 9.d4 ed4 10.ed4+-) 9.Be2 0-0 10.0-0 a6 (10...Nf5!?+-) 11.d4 White gets the initiative 11...ed4 12.ed4 The passed pawn on d4 quickly leads to threats (worse 12.Nd4 Nd4 13.ed4 Qc7+=) 12...Bf7 13.Ne4 Rc8 14.d5 Nb8 15.Rb1 Bg6 16.Bd3 Be4 17.Be4 Qc7 18.Rc1 Nd7 19.g3 (19.Re1 Nc5+-) 19...Ng6 (better 19...Nc5!? 20.Bc2 b6+-) 20.Nd4 Rfe8 21.Bf5 Ngf8 22.Re1 Qb6 23.Qb3 Qa7 24.Ne6 Nc5 25.Nc5 Bc5 26.Qc2 Rcd8 27.Kf1 Bd4 (27...Qb8 28.Re8 Re8 29.Rd1+-) 28.Re8+- Re8 29.Re1 (29.c5!? Bb2 30.Qb2 Kh8+-) 29...Re1+- 30.Ke1 Bc5 31.a4 Qb6 32.Kf1 Kf7 33.f4 Qc7 (33...Kg8 34.Kg2+-) 34.Qe2 (34.Bh7 Nh7 35.Qh7 Qd7+-) 34...g6 (34...Kg8 35.Kg2+-) 35.Be6+- Kg7 36.f5 g5? (36...b6 37.Kg2+-) 37.Qg4 (37.Qh5 Ne6 38.de6 Be3+-) 37...h6 38.Qh5 Bd6 39.Kg2 Qe7 (39...b6 40.h4 Ne6 41.Qg6 (41.de6?! Qc6 42.Kh2 Bg3 43.Kg3 Qd6 44.Kf2 Qh2 45.Kf1 Qb2 46.Qg6 Kh8 47.Qh6 Kg8 48.Qg6 Kh8 49.Qe8 Kg7 50.Qd7 Kh6 51.hg5 fg5+-) 41...Kf8 42.Qf6 (42.de6 Qc6 43.Kh2 Bg3 44.Kh3 Qh1 45.Kg3 Qh4 46.Kf3 Qf4 47.Ke2 Qc4 48.Kd2 Qd5 49.Kc3 Qf3 50.Kc4 Qc6 51.Kd4 Qd6 52.Ke4 Qc6 53.Ke3 Qc5 54.Bd4 Qc1 55.Kd3 Qf1 56.Kd2 Qg2 57.Kc3 Qc6 58.Kd3 Qf3 59.Be3 Qd1 60.Kc3 Qa1 61.Kd2 Qb2 62.Kd3 Qb3 63.Ke2 Qc4 64.Kf3 Qc6 65.Kg3 Qc7 66.Kg2 Ke7 67.Qf7 Kd6 68.Qc7 Kc7+-; 42.fe6 Qg7 43.Qf6 Qf6 44.Bf6 gh4+-) 42...Ke8 43.Qe6 (worse 43.fe6 Qh7+-) 43...Qe7 44.hg5 (44.Qh6 Qe2 45.Kh1 Qf3 46.Kg1 Bc5 47.Bd4 Bd4 48.Kh2 Qe2 49.Kh1 Qf1 50.Kh2 Bg1 51.Kh1 Bf2 52.Kh2 Qg1 53.Kh3 Qg3) 44...hg5 45.f6 Qe6 46.de6+-) 40.h4 gh4 (40...Ne6 41.de6 Kg8 42.Qh6 Qh7 43.Qf6 Be7+-) 41.Qg4 Kh7 (41...Ng6 42.Qg6 Kh8 43.Qg8) 42.Qg8 1–0. Zschalich,Arndt – Scholz,Eckart, corr DDR–ch M915, 1989.

5.bc5 d5 6.cd5 Qd5 7.Nf3 Bc5 8.Nc3 Qd8 9.Bb5 Bd7 10.0-0 f6 11.Qa4 a6 12.Bd7 Qd7 13.d4 ed4 14.Qd7 Nd7+= 15.ed4 Bd6 16.Nd5 Ne7+= 17.Rfe1 Kf7 18.Ne7 Be7 19.d5 Bd6 20.Nd4 Be5 21.Rad1 Nb6= 22.Nf3?? Bb2-+ 23.d6 Rhe8 24.d7 Re1 25.Ne1 Rd8 26.Rb1 Bd4 27.Nc2 Rd7 28.Nd4 Rd4 29.Kf1 Rd6 0–1. gtate (1905) – rooked (2075), net–chess.com, 2004.

5.bc5+= Nf6 6.Nf3+= (6.Nc3 Nc6 7.cd6 Bd6 8.Nf3 0-0) 6...Nc6 7.Be2 dc5 8.Ne5 Bd6.

5.a4 Nd7 6.b5 f5 7.Nf3 Ngf6 8.Be2 Be7 9.d4 0-0 (9...Qc7 10.0-0=) 10.de5 (10.Ng5 Bf7+=) 10...de5= 11.Ne5 Ne5 (11...Qa5!? 12.Kf1 Ne5 13.Be5 Ne4=) 12.Qd8+/- Rad8 13.Be5 Bb4 14.Bc3 Bc3 15.Nc3 cb5 (15...Rf7!?+/-) 16.ab5+- (16.cb5?! Rc8 17.Na2 Nd5+=) 16...a6 (16...Ra8+-) 17.ba6 ba6 18.Ra6 Ra8?? (18...Kf7+-) 19.Re6 Rfe8 (19...Ra1 20.Nd1+-) 20.Re8 Re8 21.0-0 Ne4 (21...Kf7 22.Ra1+-) 22.Ne4 Re4 23.Bf3 (23.Bf3 Re7 24.Bd5 Kf8 25.c5+-) 1-0. BeepBeepImAJeep (2640) - asuata (1790), lichess.org, 2017.

5.b5 g6 6.Nc3 Bg7 7.Nf3 Ne7 8.d4 ed4 9.Nd4 Bc8 10.Be2 0-0 11.0-0 c5 (11...Nd7 12.Rb1+=) 12.Nf3+- h6 (12...a6 13.a4+-) 13.Qd2 Qc7 14.Rfd1 Rd8 15.Ne4 d5? (better 15...f5 16.Ng3 Bb2 17.Qb2 Nd7+-) 16.Bg7+- Kg7 (16...de4 17.Qd8 Qd8 18.Rd8 Kg7 19.Nd2+-) 17.cd5 (better 17.Qb2 d4 18.ed4 cd4 19.Rd4 Rd4 20.Qd4 Kg8 21.Nf6 Kf8 22.Qe3+-) 17...Nd5 (17...Rd6+-) 18.Qb2 f6 (18...Kf8 19.Bc4 Be6 20.Qh8 Ke7 21.Qg7+-) 19.Rd5! Rd5 (19...Nd7+-) 20.Nf6 (20.Nf6 Qf7 21.Nd5 Kg8 22.Rd1+-) 1–0. Jeremiah – JeChristi, internet, 2019.

5.Qc2 Na6 6.a3 =+.

5.Qc2 Nd7 6.d4 ed4 (6...d5 7.c5=+) 7.ed4 (7.Bd4 c5 8.Bc3 cb4 9.Bb4 Nc5=) 7...d5=+ 8.c5 g6 (8...Ngf6 9.Bd3=+) 9.Bd3 Bg7 (9...Qg5 10.Kf1=+) 10.Ne2 (10.Nf3 Bg4 11.Nbd2 Qe7 12.Kf1 0-0-0=) 10...Ne7 (10...Qg5 11.0-0=) 11.0-0 0-0 12.Nd2 Bf5 13.Rae1 Bd3 14.Qd3 Nf5 (14...Re8 15.Qf3=) 15.Nf3 (15.Ng3 Ng3 16.Qg3 Re8=) 15...a5 16.a3 (16.g4 Nh4 17.a3 ab4 18.ab4 f5 19.Nh4 Qh4 20.gf5 Rf5=+) 16...Qc7 17.Bc1 ab4 18.ab4 Ra4 19.Bf4+= Qd8 20.b5 Qa5 21.bc6 bc6 22.Rb1 Re8 23.Rfc1 Nf8 24.Ne5+= Ra3 25.Qd2?? f6?? 26.Nc6?? Qa8?? 27.Rb6= Nd7 28.Nb4 Nb6=+ 29.cb6 Ra5 30.Nc3 Rc8 31.Ncd5?? Kh8?? 32.Bc7?? Rd5=+ 33.Nd5 Qd5 34.Qb4 Qb7 35.d5 Bf8 36.Qb2 Kg7 37.Rc6 Bd6?? 38.Qb5?? Rc7 39.Rc7–/+ Bc7 40.Qd7 Kh6 41.Qc7 Qc7?? 42.bc7+= Nd6 43.f3 Kg5 44.Kf2 Kf4 45.Ke2 Ke5 46.Ke3 Kd5 47.Kf4 Kc6 48.g4 g5 49.Kg3 Kc7 50.f4 Kd7 51.fg5 fg5 (52.h4 Ne4 53.Kf3 Nd2 54.Kg3 h6-+) 0–1. Madejska – Maka,Ma, Lublin Poland, 1995.

5.Nc3 Nd7 6.Nf3 f5 7.d4 Ngf6 8.a4 (8.Be2 Nb6 9.de5 de5+=) 8...Be7 9.Be2 0-0 (9...Ne4 10.0-0=) 10.Ng5+= Bf7 11.Nf7 Rf7 12.Qb3 (12.0-0 e4+=) 12...ed4 (12...a5 13.b5=) 13.ed4+= Rf8 (13...d5 14.0-0+=) 14.0-0+/- Re8 15.Rfe1 Bf8 16.Bf3 Qc7 17.Rad1 a5 18.b5 Rad8 19.h3 (19.Bc1 Kh8+/-) 19...g5 20.g3 (20.d5 Ne5 21.Be2 f4+/-) 20...g4 21.Bg2 Kh8 (21...Bg7 22.Bc1+/-) 22.Ne2 (22.d5 c5+-) 22...Bg7 (22...d5 23.Nf4 gh3 24.Bh3+/-) 23.Nf4 Nf8 24.b6 Qd7 25.d5 c5 26.Ne6 Ne6 27.de6 Re6 28.Re6 Qe6 29.hg4 Ng4 30.Bg7 Kg7 31.Bb7 Qe2 32.Qc3 Kg6 (32...Ne5 33.Rc1 Rb8+/-) 33.Qf3 (33.Rd2 Qe6+/-) 33...Qf3?? (better 33...Qc4 34.Qc6 Qe6=) 34.Bf3+- Ne5 35.Bd5 Rb8 36.b7 Nd7 (36...Kf6 37.Rb1+-) 37.Bc6 Nb6 (37...Nf6 38.Rd6 Kf7 39.Bg2+-) 38.Rd6 (38.Rd6 Kf7 39.Bg2 Nc4 40.Bd5 Ke7 41.Ra6+-) 1-0. zembelek1 (2175) - iwangrozni (2105), Rated Classical tournament, lichess.org, 2016.

5.Nc3 f5 6.Be2 Nf6 7.Nf3 Ne4 8.a3 Be7 9.0-0 Bf6 10.Qc2 Nc3 11.Bc3 Nd7 12.d3 c5 13.Rad1 Qc7 14.h3 h6 15.Nh2 d5 (15...0-0 16.f4=) 16.cd5 Bd5 17.e4 Be6 18.ef5 Bf5 19.Ng4 c4 (19...cb4!? 20.ab4 Rc8+=) 20.Nf6 Nf6 (20...gf6!? 21.Bd2 Nb6+=) 21.Qb2 cd3 22.Bd3 e4? (22...Bd3 23.Rd3 e4 24.Rg3+/-) 23.Bb5?? (better is 23.Bf6 ed3 24.Bg7+-) 23...Nd7?? (better is 23...Kf7!?+/-) 24.Rd5 (24.Bg7 Rg8 25.Qf6+-) 24...0-0 25.Bg7 Rf7 26.Bh6 Rc8 (26...Nb6 27.Rc5 Qd6 28.Rf5 Qh6 29.Rf7 Kf7+-) 27.Rf5 (27.Rf5 Nb6 28.Rc5+-) 1–0. Radwan,Jan (1690) – Bartosik,Lech (1845), Mistrzostwa Polski w Szachach Niepelnosprawnych Poland, 2009.

5.Nc3 Nf6 6.Nf3 h6 7.Qc2 Be7 8.d4 Nbd7 9.Be2 Rc8 (9...e4 10.Nd2 d5 11.a3=) 10.Rd1 Qc7 11.h3 d5? (better is 11...e4!? 12.Ne4 Ne4 13.Qe4 d5=) 12.de5+/- Ne5 (12...Ne4!? 13.a3 Nc3 14.Qc3 Nb6+/-) 13.Ne5+- Qe5 14.Nd5 Qg5 15.Ne7 Ke7 16.Bf6 (16.Bf3 Rhd8+-) 16...Qf6 17.0-0 Rhe8 18.Qa4 Ra8 19.b5 c5 20.Bf3 Reb8 21.Qc2 Kf8 22.Rd6 Kg8 23.Rfd1 Qe7 24.a4 Rf8 25.Qd3 Rab8 26.a5 Qh4 0–1. Miljanovic,Zeljko (1915) – Mehmeti,Tahir (1790), Porec CC–ch, 2009.

5.Nc3 Nf6 6.Nf3 h6 7.d4 e4 8.Nd2 (8.d5 ef3 9.de6 fe6 10.Qf3 Nbd7+-) 8...d5= 9.cd5 (9.Qb3 Be7=) 9...cd5 10.Bb5 (10.a3 Bd6=+) 10...Bd7 (10...Nc6 11.Qa4=+) 11.Bd7 Qd7 12.Qb3 (12.b5 Bd6=) 12...Nc6 13.b5 Na5 14.Qa4 b6 15.0-0 Be7 16.f3 0-0 (16...ef3 17.Nf3 0-0 18.Ne5=) 17.fe4 Ne4 18.Nde4 de4 19.Ne4 f5 20.Nc5 Bc5? (20...bc5 21.Qa5 Deflection; 20...Bc5 21.dc5 Combination) 21.dc5+- Qd3 (21...Qe6 22.c6+-) 22.Bd4 Nb7? (better 22...Rac8+-) 23.Rad1 Qe4 24.cb6 ab6 25.Qb3 Kh8 (25...Kh7 26.Bb6 Rfc8 27.Rf4+-) 26.Bb6 Rae8 (26...Rf6 27.Bd4 Rg6 28.g3+-) 27.Rd7 Re7 (27...Nd8 28.Qd5 Ne6 29.Qe4 fe4 30.a4+-) 28.Re7 Qe7 29.Qd5 Qd6 (29...Qf7 30.Qf7 Rf7 31.a4+-) 30.Qb7 Qc5 (30...Rb8 31.Qc6 Qc6 32.bc6 Rb6+-) 31.Bc5 Kh7 (31...Rd8 32.Bd4 Rd4 33.ed4 Kg8 34.Qc8 Kh7 35.Qf5 Kg8 36.Re1 g5 37.Re7 g4 38.Qc8) 32.Bf8 (32.Bf8 Kg6 33.Qg7 Kh5 34.Rf5 Kh4 35.Be7) 1–0. DEFFM – GuestZHNX, freechess.org, 2018.

5.d4 ed4 6.ed4 d5 7.c5 g6 8.Bd3 Bg7 9.Nf3 Ne7 10.0-0 0-0 11.a4 Bf5 12.b5 b6 13.Bf5 Nf5 14.Qc2 a6 15.Na3 ab5 16.ab5 cb5 17.Nb5 Ra1 18.Ra1 Qd7 19.Na7 bc5 20.Qc5 Qb7 21.Qb5 Qb5 22.Nb5 Nc6 23.Rc1 Na5 24.Rc5 Nc4 25.Bc1 Ra8 26.g4 (26.Rd5? Ra1 27.Rd8 Bf8-+) 26...Ne7 27.Bg5 f6 28.Bf4 Rc8 29.Nc7 Kf7 30.Kf1 Bf8 31.Ke2 (31.g5 Bg7+=) 31...g5= 32.Bg3 h6 (32...h5!? 33.h3 h4+=) 33.Rb5+/- (worse is 33.Nd5 Rc5 34.Ne7 Rb5–/+ (34...Be7?! 35.dc5 Bc5 36.Kd3 Nb2 37.Kc2=)) 33...Rd8 34.Kd3 Nd6 35.Bd6 Rd6 36.Nd2 Rd7 37.Na6 Ng6 38.Nc5 Rc7 39.Kc3 Bd6 40.Nf3 (40.Nf1 Nf4=) 40...Nf4 41.Rb7 h5 (41...Rb7 42.Nb7 Bc7 43.Nc5+=) 42.Rc7= Bc7 43.gh5 g4 44.Nh4 Nh5 ½–½. Bogdanov,Nikita (1840) – Sofyin,Pavel (2025), Chelyabinsk RUS, 8th Kibizov Mem, 2013.

5.Nf3 a5 6.a3 ab4 7.ab4 Ra1 8.Ba1 Nf6 9.Nc3 Be7 10.Qb3 (10.Be2 0-0=) 10...0-0 11.Be2 d5 (11...b5!? 12.d3 Qb6=+) 12.Ne5= d4 (12...Qd6 13.Na2+=) 13.Nb1 de3 14.fe3 b5 (14...Qd6 15.Nd3+=) 15.Nf3 (15.0-0!?+/-) 15...bc4+= 16.Bc4 Bc4 17.Qc4 Nbd7 (17...Qd5!? 18.Na3 Nbd7+=) 18.0-0 Nb6 (18...Qb8 19.Bd4+/-) 19.Qb3 (better 19.Qc6!? Bb4 20.Bf6 Qf6 21.Qf6 gf6 22.Kf2+-) 19...Nbd5+/- Exerts pressure on the isolated pawn 20.b5 cb5 (20...Qb6 21.Nd4 Rb8 22.Nc3 Nc3 23.Nc6+/- (worse 23.dc3 cb5 24.c4 bc4 25.Qc4 Qc5 26.Qc5 Bc5=)) 21.Qb5+/- Qd6 22.Nc3 Nc3 23.Bc3 (23.dc3?! Ng4=) 23...h6 24.Qe5 Qe5 25.Ne5 (better 25.Be5 Ng4 26.Bd4+/-) 25...Rd8? (better 25...Ne4+/-) 26.Nc6+- Rd7 27.Ne7 Re7 28.Bf6 gf6 29.Rf6 Kg7 30.Rf2 Rd7 31.Kf1 f5 32.Ke2 Kg6 33.Rf3 Kg5 (33...Rb7 34.d4+-) 34.Rg3 Kf6 (34...Kh5 35.d4+-) 35.Rh3 (35.h4 Rd6+-) 35...Kg6 36.Rf3 Kf6?? (36...Kg5 37.d4 h5+-) 37.h3 (better 37.g4 f4+-) 37...Kg5 38.Rg3 Kf6 39.Rf3 Kg6?? (39...Kg5 40.d4 h5+-) 40.d4+- Rd5 (40...Kg5 41.Kd3+-) 41.Kd3 Ra5 42.g4 fg4 (42...Ra3 43.Kd2 Ra2 44.Kc3 Ra3 45.Kb2 fg4 46.hg4+-) 43.hg4 Kg5 44.Rf4 (44.Rf5!? Rf5 45.gf5 Kf5+-) 44...Ra3 45.Ke4 Rb3 46.Rf5 (better 46.d5+-) 46...Kg4 47.Rf8 h5 48.d5 (48.Rg8 Kh3 49.d5 Rb2+-) 48...h4?! (48...Rb4 49.Ke5 Rb3 50.e4+-) 49.d6 (better 49.Rg8 Kh5 50.d6+-) 49...Rb6 (49...Rb7 50.Rg8 Kh3 51.Kd5+-) 50.Ke5 (better 50.d7 Rd6 51.d8Q Rd8 52.Rd8 Kg3+-) 50...h3 (50...Rb5 51.Ke6 Rb6+-) 51.d7 h2 (51...Rb5 52.Kd6 h2 53.d8Q Rd5 54.Kd5 h1Q 55.Ke5 Qh2 56.Rf4 Kh3 57.Qh4 Kg2 58.Qf2 Kh3 59.Qf1 Qg2 60.Rh4 Kh4 61.Qg2 Kh5 62.Kf5 Kh4 63.Qg4) 52.Rh8 (52.d8Q Rb5 53.Ke6 Kh3 54.Rh8 Kg2 55.Qd2 Kg1 56.Rg8 Kf1 57.Rf8 Rf5 58.Rf5 Kg1 59.Qf2 Kh1 60.Qf1) 52...Rb8 (52...Rb5 53.Kd6 Rb3 54.d8Q Rd3 55.Ke7 Rd8 56.Kd8+-) 53.Rb8 h1Q 54.d8Q Qh5 55.Kd4 Qa5 (55...Qf7+-) 56.Qd7 (56.Qd7 Kg5 57.Rg8 Kf6 58.Qd6 Kf7 59.Rf8 Kg7 60.Qf6 Kh7 61.Rh8; 56.Qa5 Kg3 57.Qg5 Kf3 58.Rf8 Ke2 59.Qg2 Ke1 60.Rf1) 1-0. ClayPigeons (2090) - stupid_box (2180), Rated Bullet game, lichess.org, 2020.

5.Nf3 Na6 6.a3 =+.

5.Nf3 Be7 6.Nc3 Nd7 7.d4 ed4 8.Qd4 Ne5 9.Ne5+= de5 10.Qe5 Bb4 11.a3 Bd6?? 12.Qg7+- 1–0. pierre – thsoi, internet, 2009.

5.Nf3 Be7 6.Be2 h6 7.0-0 Nf6 8.Nc3 Qc8 (8...0-0 9.d4=) 9.a3 a6 10.d4 e4 11.Nd2 d5 12.Rc1 Qd7 (12...Qd8 13.cd5 cd5 14.f3 ef3 15.Bf3+=) 13.Qb3 (13.cd5 cd5 14.Na4 Qd6+/-) 13...b5 14.cb5 (14.cd5 cd5 15.a4 ba4 16.Na4 Qd6+=) 14...ab5= 15.a4 ba4 16.Na4 c5? (better 16...Qd6 17.Nc5 Nbd7=) 17.Nc5 Bc5 (17...Qd6 18.f3 ef3 19.Bf3+/-) 18.bc5 (better 18.dc5!? Qc7 19.b5+-) 18...Nc6+/- 19.Ra1 0-0 20.Bb5 Qc7 21.Qc3 (21.Bc6 Ng4 22.Rfe1 Rab8+/-) 21...Ne7 (21...Ng4 22.g3 Nf6 23.f3 Ra1 24.Ba1+=) 22.Be2 Rfb8 23.Ra8 Ra8 24.Ra1 Ra1 25.Ba1 Qa7 26.Bb2 Bd7 27.Qa3 Qb7 28.Bc3 Nc6 29.Nb3 Kh7 30.h3 g5 31.Na5 Na5 32.Qa5 (32.Ba5?! Qb1 33.Kh2 Qc2=) 32...Qb1 33.Be1 Qc2 34.Qd2 Qd2 35.Bd2 Bc6 36.Ba6 Nd7 37.Ba5 f5 38.Kf1 Kg7 39.Ke2 Kf7 40.Kd2 Ke7 41.Kc3 f4 (41...Nf8 42.Bc7+-) 42.Kb4 (42.ef4 gf4 43.Bc7 f3 44.gf3 Nf6+-) 42...Nb8 (42...f3 43.Bf1+/-) 43.Bb5 (43.Be2 Bb7+-) 43...Kd7 (43...Bb5 44.Kb5 Kd7 45.Bd2+/-) 44.Bc6 (44.Be2 Bb7+-) 44...Kc6 (44...Nc6 45.Kb5+/-) 45.Bd8 Nd7 46.Be7 Nb8 (46...f3 47.gf3 ef3 48.Kc3+-) 47.Bd6 (47.ef4 gf4 48.Bd6 Na6 49.Kc3 Nc7 50.Bc7 Kc7+-) 47...fe3 48.fe3 (48.Bb8?? ef2 49.h4 f1Q 50.hg5 hg5-+) 48...Nd7 49.Ka5 (49.g4 Nf6+-) 49...h5+/- 50.Be7 g4 51.hg4 hg4 52.g3 Nb8 53.Bg5 Nd7 54.Ka6 Nf8 55.Ka7 Nh7 56.Bf4 Nf6 57.Kb8 Nh5 (57...Nd7 58.Kc8 Nf8 59.Bg5+/-) 58.Bd6 (58.Be5 Ng3 59.Bg3 Kb5+-) 58...Ng7+/- 59.Kc8 Nf5 60.Bf4 Ne7?? (better 60...Ng7+/-) 61.Kd8+- Ng6 (61...Nf5 62.Ke8+-) 62.Bg5 (better 62.Bd6 Nh8 63.Ke7 Ng6 64.Kf7 Nh8 65.Kg8 Ng6+-) 62...Nf8 63.Bf4 (better 63.Ke7 Nd7 64.Bf4+-) 63...Ne6-+ 64.Ke7 Nf4 (64...Nf4 65.gf4 g3-+) 0-1. dannysmet (2020) - rimil_2019_2 (2000), Rated Blitz game, lichess.org, 2021.

5.Nf3 f5 6.Nc3 Be7 7.Be2 e4 8.Nd4 Bd7 9.g4 fg4 10.Ne4 Nf6 11.Nf6 Bf6 12.Bg4 0-0 13.Rg1 c5 14.bc5 dc5 15.Ne6 Be6 16.Be6 Kh8 17.Qb3 Bb2 18.Qb2 Qc7 19.Rb1 b6? (better is 19...Na6 20.Qb7 Rab8+/-) 20.Bd5+- Nc6? (20...Na6 21.Ba8 Ra8+-) 21.Bc6 Rad8 22.f4 Rd6 23.Bd5 Qe7 (23...Re8 24.Rg3+-) 24.Qe5 Qc7 (24...Qh4 25.Kd1 Rd7 26.Qg5 Qg5 27.Rg5+-) 25.Rg7! Qg7 (25...Qg7 26.Qd6 Deflection (26.Qd6 Overloading)) 26.Qd6 Qg1 27.Ke2 Qh2 (27...Qg4 28.Bf3 Qf5+-) 28.Kd3 Re8 29.Qf6 1–0. Janek – Zack, internet, 2016.

5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 c6).

5.Nf3= h6 6.c5 (6.d4 d5 7.a3 e4=) 6...e4 (6...dc5 7.bc5 Bc5 8.Qc2=) 7.Nd4= d5 ( 7...Bd5!?=) 8.Ne6+/- fe6 9.Qh5 Kd7 10.Qf7 Qe7 11.Qf4 (11.Qe7!? Ne7 12.d3+/-) 11...Nf6 12.Be5 (12.d3 Kc8+=) 12...Qd8 (12...Kc8 13.d4=) 13.Nc3 Kc8 14.d3 ed3 15.Bd3 Nbd7 16.0-0 Ne5 17.Qe5 Qe7 18.Bg6 (18.b5 Nd7 19.Qd4 Qc5 20.bc6 bc6=) 18...Nd7 19.Qd4 Qg5 20.Bc2 Be7 21.f4 Qh5 (21...Qf6 22.Rad1=) 22.Qg7?? ( 22.e4+=) 22…Bf6-+ (23.Bg6 Bg7 24.Bh5 Bc3-+) 0–1. Dopper,Johan – van der Made,J, 2000A, 1994.

6.Qb3 a5 7.ba5 Nc5 8.Qc2=.

6.Qb3 f6 7.a4 (7.d4 e4 8.Nfd2 d5=) 7...Qe7 8.Nc3 g6 9.d4 Bg7 (9...Bg4 10.d5=) 10.Be2+= Nh6 11.0-0 Nf7 12.Rfe1 0-0 13.Rad1 Rfe8 (13...Bg4 14.e4+=) 14.Ba3 (14.h3 Nh6+=) 14...Rad8 (14...Bg4 15.d5+=) 15.b5 (15.d5 Bg4+=) 15...Nb8 (15...Bg4 16.d5 c5 17.e4+=) 16.a5 (16.d5 Bg4+/-) 16...Kh8 (16...e4 17.Ne4 cb5 18.Ned2 bc4 19.Bc4 Bc4 20.Nc4+/-) 17.de5 (17.d5 Bg4+/-) 17...fe5+= 18.e4 Qf6 19.Bc1 (19.a6 ba6 20.bc6 Nc6+/-) 19...h6 20.Be3 White prepares b6 20...a6 21.Qc2 c5 (21...ab5 22.cb5 d5 23.Bb6+=) 22.b6 (22.Qd2 ab5 23.cb5 g5+-) 22...Kh7 (22...Nc6 23.Nd5 Bd5 24.cd5+/- (24.Rd5?! Nb4 25.Qd1 Nd5 26.Qd5 Re7=)) 23.Qc1 (23.Nd5 Bd5 24.cd5 Rf8+/-) 23...Nh8 (23...Nc6 24.Nd5 Bd5 25.cd5+/- (25.Rd5?! Na5 26.Qc3 Nc6=)) 24.Rd3 (24.Nd5 Bd5 25.cd5 Rf8+/-) 24...Nf7 (24...Bc4!? 25.Bg5 Qe6 (25...hg5? 26.Ng5 Kg8 27.Rf3 Be2 28.Rf6 Bf6 29.Re2+-) 26.Bd8 Bd3 27.Bd3 Rd8+=) 25.Nd5+/- Bd5 26.cd5 (26.ed5? e4 27.Rdd1 ef3 28.Bf3 Ne5-+; 26.Rd5?! Nc6 27.Qc3 Nb4+/-) 26...Qe7 27.g3 (27.Qc4 Rf8+/-) 27...Nd7 28.h4 Nf8 (28...Nf6 29.Qc4+=) 29.h5! g5 (29...gh5 30.Nh4 Decoy) 30.Nh2 (30.Nd2 Nd7+/-) 30...Qd7 31.Bg4 Qe7 32.Bf5 Kg8 33.Ng4 Nh7 34.Bg6 (34.Qc2 Rf8+/-) 34...Rf8 (34...Nf8!?=) 35.f3 Nh8 36.Rf1 (better 36.Bf5+/-) 36...Ng6=+ 37.hg6 Nf6 38.Nh2 (38.Nf6 Rf6 39.Qc4 Rdf8=+) 38...Qe8 39.Rd2 Qg6 40.Rg2 (40.Rdf2 g4 41.Ng4 Ng4 42.fg4 Rf2 43.Rf2 Qe4 44.Bh6 Qg4 (44...Qd5?? 45.Bg7 Rd7 46.Bh8+-) 45.Bg7 Kg7-/+) 40...Kh7 (better 40...g4-+) 41.Ng4? (better 41.Qc4-/+) 41...Ng4-+ 42.fg4 Rf6?? (42...Qe4 43.Qc2 Rf1 44.Kf1 Rf8 45.Ke1 Qc2 46.Rc2-+) 43.Rgf2? (better 43.Rf6 Bf6 44.Rf2=+) 43...Rf2-+ 44.Rf2 Rf8?? (44...Qe4 45.Qd2-+) 45.Qe1?? (45.Rf5 Rf7=+) 45...Rf2?? (45...Qe4 46.Rf8 Bf8 47.Qf2-+) 46.Qf2? (46.Bf2 Kg8-/+) 46...Qf6?? (better 46...Qe4 47.Qf5 Qf5 48.gf5 e4-+) 47.Qf5=+ Qf5 48.gf5 Kg8 (48...Bf6 49.Kf1-/+) 49.Kg2 (49.g4 Bf8=) 49...Kf7 (49...g4 50.Kf2=+) 50.Kf3 Kf6 51.g4 Bf8 52.Kg3 Bg7 53.Kh3 Bf8 54.Kg2 Bg7 55.Kg3 Bf8 56.Kf3 h5 (better 56...Be7=) 57.Kg2?? (better 57.gh5 Bh6 58.Kg3+/-) 57...h4-/+ 58.Kh3 Bg7 0-1. ClayPigeons (2075) - SKIPPED (2110), Rated Bullet game, lichess.org, 2019.

6.Nc3 Ngf6 7.Be2 a6 8.Qc2 g6 9.0-0+= Bg7 10.d4 0-0 11.de5 de5 12.Rad1 Qc7 13.a3 b6 14.e4 Rac8 15.Na2 b5 16.Nc1+= c5 17.cb5 cb4 18.Qc7+/- Rc7 19.ba6 ba3 20.Ba3 Rfc8 21.Bd6 Rc6 22.Ne5 Ne5 23.Be5+- Ne4 24.Bg7 Kg7 25.Bf3 Rc4? 26.Rfe1 Nc3 ½–½. alaamattar (2100) – vgomdysey (2160), net–chess.com, 2005.

6.Nc3 Ngf6 7.Be2 g6 8.0-0 Bg7 (8...d5 9.cd5 Nd5 10.b5+=) 9.Ng5 (9.d4 0-0+=) 9...0-0= 10.Ne6 fe6 11.b5 (11.d3 Qb6 12.a3 a5+=) 11...Nc5 (11...e4 12.Qc2 cb5 13.Nb5=) 12.Rb1 (12.d4 ed4 13.ed4 Nce4+=) 12...Rc8 (12...cb5 13.Nb5 a6 14.Nc3=) 13.bc6 (13.d4 Ncd7+=) 13...bc6 14.Ba3 (14.d4 Ncd7+=) 14...Nce4 15.Ne4 Ne4 16.Qc2 Nc5 (better 16...Nf6!?+=) 17.Bg4 (17.Bc5 dc5 18.Bf3 Qd7+-) 17...Qe8 (17...Qd7 18.Bc5 dc5 19.Qe4+-) 18.f4 (18.Bc5 dc5 19.Rb7 Rb8 20.Ra7 Rf6+-) 18...ef4 (18...Qe7 19.fe5 Rf1 20.Rf1+-) 19.d4+- Nd7 20.Bd6 Rf7 (20...fe3 21.Bf8 Nf8 22.Rf4+-) 21.Bf4 (21.Rf4 Nf6 22.Bd1 Bh6+-) 21...Nf6 22.Bh3 Qe7 (22...Qd7 23.Rb8 Rb8 24.Bb8+-) 23.c5 Nd5 (23...Rd8 24.Bd6 Qd7 25.Qc4+-) 24.Bd6 Qd7 25.Qd3 Ne7? (25...Re8+-) 26.Rf7 Re8 (26...Kf7 27.Qa6 Nd5+-) 27.Qf1 a5 (27...h5+-) 28.Rg7! Kg7 29.Be5 Kg8 30.Qf6 Nd5 31.Qh8 Kf7 32.Qg7 1–0. michaelbuss (2800) – Pawnzai, ChessWorld.net, 2012.

6.d3 Qf6 7.Be2 Be7 8.0-0 Qg6 9.g3 h5 10.Kg2 (10.h4 Ngf6+=) 10...h4–/+ 11.Rh1 hg3 12.hg3 Rh1 13.Qh1 f5?? (13...Nh6 14.Nc3–/+) 14.Nbd2?? (better is 14.Ne5 Qh6 15.Qh6 gh6 16.Ng6+-) 14...0-0-0+= 15.Nh4 Bh4 (15...Qf6!?–/+) 16.Qh4+= Ngf6 17.Nf3 e4 18.de4 fe4 19.Nd4 (better is 19.Ng5!? Bg8 20.a4=) 19...Bg4–/+ 20.Rh1 Be2 21.Ne2 Ne5 22.Be5 de5 23.Qh3 Kb8 24.Qe6 Rd2?? (24...Re8 25.Qd6 Kc8+=) 25.Qe5 (better is 25.Rh8 Kc7 26.c5 Qe8 27.Re8 Ne8 28.Qe7 Rd7 29.Qe8 b6+-) 25...Kc8 26.Rh8 Rd8 (26...Kd7 27.Rb8 Rd6+-) 27.Qe6 Kc7 28.Rd8 (better is 28.Qe7 Rd7 29.Qe5 Rd6 30.Nf4+-) 28...Kd8 29.Qd6 Nd7?? (better is 29...Kc8+-) 30.Qg6 1–0. Fournier,Frederic (1625) – Arnock, Active, 2007.

6.d4 e4 7.d5 ef3 8.de6 fg2?? (better is 8...fe6 9.Qf3 d5=) 9.ed7+- Qd7 10.Bg2 f6 (10...Nf6 11.Nc3+-) 11.Nc3 0-0-0 (11...f5 12.b5+-) 12.0-0 h5 13.Qa4 White prepares b5 13...Kb8 14.b5 c5 15.Qb3 g5 (15...h4 16.b6 ab6 17.Qb6+-) 16.b6 a6 17.Qc2 1–0. Janek – Bonnie, internet, 2016.

6.Be2 a5 7.b5 c5 (7...cb5 8.cb5 Ngf6 9.0-0=) 8.d3 Be7 9.Nc3 f5 (9...Nh6 10.Nd5+=) 10.Nd2 (10.0-0 Nh6+=) 10...Ngf6 11.f4 Ng4 12.Bg4 fg4 13.Nd5 (13.0-0 0-0+=) 13...0-0 (13...Bd5 14.cd5 ef4 15.0-0 (< 15.Bg7 Rg8 16.Qg4 Nf6–/+) 15...fe3 16.Bg7=) 14.g3 ( 14.0-0!?+=) 14...Bd5=+ 15.cd5 ef4 16.ef4 (16.Qg4!? Bf6 17.Bf6 Nf6 18.Qe6 Kh8 19.e4= (19.ef4?? Re8 20.0-0 Re6 21.de6 Qe8-+)) 16...Bf6–/+ 17.Qc2 Re8 18.Ne4 Bb2 19.Qb2 Nf6 20.Kf2 Ne4 21.de4 Re4 22.Rhe1 Qe7 23.Re2 Rb4 24.Qc3 Qf7-+ 25.Re6 g5 26.Qf6 gf4 27.Rd6 fg3 28.Kg3–/+ Re8 29.Qg5 Kh8–/+ 30.Rf6 Qg7 31.Qg7 Kg7 32.Rf4 h5 33.a4? Re3-+ 34.Kf2 Rf4 35.Ke3 Rd4 36.Rc1 b6 37.Rf1 Rd5 38.Ke4? Rd2 39.Ke5 Rh2 40.Rf6 Re2 (41.Kf5 Rf2 42.Kg5 Rf6-+) 0–1. Lentner,Gerwald (1690) – Ampferer,Michael (1805), Wattens op, 1996.

6.Be2 Qb6 7.a3 =.

6.Be2 Be7 7.0-0 Bf6 (7...Qb6 8.a3=) 8.d4+= Qc7 (8...e4 9.Nfd2 d5 10.Nc3+=) 9.Nbd2 (9.e4 ed4 10.Bd4 Bd4 11.Nd4 Ngf6+=) 9...Bf5 (9...a5 10.b5+=) 10.e4+/- Bg6 (10...Be6 11.Re1+/-) 11.Qb3 (11.Re1 Qb6+=) 11...Ne7 12.Rac1 (12.Rfd1 ed4 13.Bd4 Bd4 14.Nd4 0-0+=) 12...0-0 13.a4 Rfe8 14.Rfd1 Rad8 15.Bc3 Nc8 16.Bd3 Nf8 17.d5 Nd7 18.Qb1 c5 19.b5 b6 20.Nf1 Bh5 21.N3d2 Bg5 22.Ng3 Bg6 23.Qb2 Ne7 24.Ra1 Rf8 25.Ra2 f5 26.ef5 Bd2?? 27.Qd2?? Nf5+= 28.Bf5 Bf5= 29.a5 Bg6 30.f3 Rf4= 31.Ra4 Rdf8 32.Ne2 R4f7 33.Rda1 Qd8 34.Qe3 Qh4 35.Be1 Qf6 36.Bg3 Qf5 37.Nc3 Qd3 38.Qd3+= Bd3 39.Nd1 Bc2 40.R4a3+= Bd1 41.Rd1 g5 42.a6 Nf6 43.Re1 Nh5 44.Rae3 Kg7 (45.Bf2 Nf4+=; 44...g4 45.fg4 Ng3 46.Rg3+=). Rustamov,Bakhtiyar (2320) – Zhuravliov,Valerij (2450), Ozery op1 Seniors, 1997.

6.Be2 h6 7.0-0 Ngf6 8.a3 Be7 9.d4 e4 10.Nfd2 d5 11.Nc3 0-0 12.Rc1 Nb6 13.c5 Nbd7 14.b5 Nh7 15.f3 f5 16.fe4 fe4 17.Qb3 Rf6 18.Rf6+/- Ndf6 19.Nce4! Ne4 20.Ne4 Qd7 21.Nd2 Bg5 22.Nf3 Rf8 23.Rf1 Bf6 24.Qa4 Ra8 25.b6 a6 26.Bd3 Ng5 27.Qc2 Re8 28.Ne5 Be5 29.de5 Ne4 30.Be4 de4 31.Qe4 Qd2 32.Bd4 Bc4 33.Qg6+- Re7 34.Ra1 Re6 35.Qg4 Qc2 36.e4 Bd3?? 37.Qe6+- (37.Qe6 Kh8 38.Qc8 Kh7 39.Qf5 Kg8 40.e6 Qg2 41.Kg2 Be4 42.Qe4 Kf8 43.Qf4 Ke7 44.Qf7 Kd8 45.Qd7#) 1–0. guest4986 – guest6592, ICC, 2005.

5.a3 b6 6.Nf3 a6 7.Be2 b5?? (better is 7...e4 8.Nd4 Nd4 9.Bd4 Qg5+=) 8.cb5+- ab5 9.Bb5 Bd7 10.Be2 (10.0-0 Nce7 11.Bd7 Qd7+-) 10...Be7 11.0-0 f6 (11...Nf6!?+/-) 12.Nc3 Nh6 13.d4 e4 (13...0-0 14.Bd3+-) 14.Nd2 (14.Ne4 d5 15.Nc3 Be6+-) 14...0-0 (14...f5 15.Qc2+-) 15.Nce4 d5 16.Nc3 Bf5 17.Nf3 Be4 18.Ne4 de4 19.Nd2 Nf5 20.Qc2 Nd6 21.Qc6 f5 22.Nc4 Nc4 23.Qc4 Kh8 24.Rfc1 Rc8 25.Qc3 c6 26.d5! cd5 27.Qg7 1–0. Fournier,Frederic – medza, Active (1/1), 2005.

5.a3 d5 6.cd5 Bd5 7.Nf3 (7.b5 Na5 8.Be5 Nb3=) 7...Nf6 (7...e4 8.Nd4=) 8.b5 (8.Ne5 Ne5 9.Be5 Bd6 10.Bf6 Qf6+/-) 8...e4 9.Nd4 (9.bc6 ef3 10.cb7 Rb8 11.gf3 Rb7=) 9...Nd4 10.Bd4 b6 (10...c5!? 11.Bf6 Qf6=) 11.Nc3+= Be7 12.Nd5 Nd5? (12...Qd5!? 13.Rc1 Ba3 14.Rc7 Bd6+=) 13.d3 (13.Qg4 Nf6 14.Bf6 Bf6 15.Qe4 Kf8+-) 13...Bf6 (13...ed3!? 14.Bd3 0-0+-) 14.de4+- Bd4 15.Qd4 Nf6 16.Bd3 0-0 17.0-0 c5 18.bc6 Qd4? 19.ed4 Rac8 20.d5 Rfe8 21.f3 h6 22.a4 g5 23.h3 Kf8 24.a5 Ra8 25.Rfb1 Reb8 26.ab6 ab6 27.Ra8 Ra8 28.Rb6 Ra1 29.Kf2 Ra2 30.Kg3 Ne8 31.Rb8 Ke7 32.e5 Rd2 33.Be4 f6 34.d6 Nd6 35.ed6 Rd6 36.c7 (36.c7 Rd2 37.c8Q Rd1 38.Rb7 Kd6 39.Qc7 Ke6 40.Qe7) 1–0. Fournier,Frederic (1930) – spawn18, Active, 2007.

5.a3 Qe7 6.Nc3+= 0-0-0 (6...Nf6 7.Nf3+=) 7.Be2 (7.Qa4 Nf6 8.b5 Nd4+/-) 7...Nf6 8.d3 (8.b5 Na5 9.Qa4 b6+/-) 8...g6 (8...d5!? 9.cd5 Nd5=) 9.Nf3+= Bg7 10.b5 Na5 11.e4 Nc4?? (better 11...Nd7+=) 12.dc4+- c6 (12...Nh5 13.0-0+-) 13.Na4 (better 13.bc6 bc6 14.0-0+-) 13...cb5 14.cb5 a6?? (14...Ne4 15.Qc2 Nc5+-) 15.ba6 ba6 (15...Kb8 16.Qc2 Rc8 17.Bc3+-) 16.Rb1 d5 (16...Qb7 17.Be5 Qe4+- (17...de5 18.Qc2 Kb8 19.Rb7 Kb7 20.Ba6 Kb8 21.0-0 Rd6 22.Rb1 Bb3 23.Rb3 Ka7 24.Qc7 Ka6 25.Nc5)) 17.Be5 (17.Be5 Kd7 18.Rb7 Ke8 19.Re7 Ke7 20.Nd4+-) 1-0. Williams,Barry - Oskam,Matt, NZL Wanganui Chess Club Summer Handicap, 2002.

5.a3 Nf6 6.Nf3 d5 7.cd5+= Bd5 8.Ne5 Ne5 9.Be5 Qe7 10.d4 a5 11.Nc3 ab4 (better is 11...c6 12.Bf6 Qf6 13.Nd5 cd5 14.Qa4 Kd8+-) 12.Nd5?? (better is 12.Bf6 Qd7 13.Nd5 Qd5 14.Be5 ba3 15.Qb1 (15.Bc7?! Bb4 16.Ke2 Bc3+=) 15...Qa5 16.Kd1+-) 12...Nd5+= 13.ab4?? (13.a4 Nc3 14.Qf3 c5=) 13...Ra1 (better is 13...Qb4 14.Ke2 Nc3 15.Kf3 Nd1 16.Ra8 Ke7 17.Bc7 Qb3 18.Bd8 Kd7-+) 14.Qa1= Qd8 15.Qa4 (15.Bc4 Bb4 16.Kf1 Nb6 17.Bb5 c6+=) 15...c6= 16.b5?? (better is 16.Bd3 Bb4 17.Kf1+=) 16...Bb4-+ 17.Ke2 (17.Qb4 Nb4 18.Bg7-+) 17…Nc3 (17...Nc3 18.Kd3 Na4 19.bc6 Bd6 20.Bg7 Rg8-+) 0–1. Fournier,Frederic – franchuteski, Active, 2008.

5.a3 Nf6 6.Nf3 e4!? 7.b5 Na5 =.

5.a3 Nf6 6.Nf3 Bg4 7.Be2 e4 8.Nd4 Nd4 9.Bd4 Be2 10.Qe2 c6 11.0-0 a5 12.Nc3 Be7 13.d3 c5 14.Bf6 Bf6 15.d4 0-0 16.bc5 dc5 17.Ne4 cd4 18.Rad1 Re8 19.Qc2 Rc8 20.Nf6 Qf6 21.Rd4 b5 22.c5 Re5 23.Rc1 Qe7 24.c6 (24.Qd2 Rec5 25.Rc5 Qc5 26.Rd8 Rd8 27.Qd8 Qf8 28.Qa5 h6+/-) 24...Re3+= 25.Qd1 Ra3?? (better is 25...Re4 26.Re4 Qe4+/-) 26.c7+- Rf8 27.c8Q b4 (27...Ra4+-) 28.Rd8 Qd8 (28...Rd3 29.Rf8 Qf8 30.Qd3 g6 31.Qf8 Kf8 32.Qd4 h6 33.Rc8 Ke7 34.Qe5 Kd7 35.Rc7 Kd8 36.Qe7#) 29.Qdd8 Rd8 (29...h5 30.Qf8 Kh7 31.Qf5 g6 32.Q5f7#) 30.Qd8# 1–0. Fournier,Frederic (2090) – NolaDarling, Active, 2012.

5.b5 Na5 6.Qa4 b6 7.d4 ed4 8.Bd4 Nf6 9.Nf3 Ne4 10.Nbd2 Nc5 11.Qc2 Be7? 12.Bg7+- Rg8 13.Qh7 f6 14.Nd4 Bf7 15.Be2 Qd7 16.Bh5 Rg7 17.Qg7 Bh5 18.Qh8 Kf7 19.Qh5 (19.Qh5 Kg7 20.Nf5 Kf8 21.Qh8 Kf7 22.Nh6 Kg6 23.Qa8 Kh6 24.Qh8 Kg6 25.Qg8 Kh6 26.Nb3+-) 1–0. pereira – tfolv, internet, 2009.

5.b5 Na5 6.Qa4 b6 7.Nf3 Nf6 8.d4 (8.Nc3 a6 9.ba6 Bd7 10.Qc2 Be7 11.Be2 Nc6 12.0-0 0-0 13.Nd5 Ra6 14.d4 ed4) 8...ed4 (8...a6 9.de5 (9.Qc2 ab5 10.cb5 e4 11.Ng5 Bf5 12.Nc3 d5 13.Be2 Be7 14.Nh3 0-0) 9...ab5 10.cb5 (10.Qc2 de5 11.cb5 Bb4 12.Nbd2 e4 13.Ng5 Bf5 14.Rd1 Qe7) 10...de5 A) 11.Ne5 Nb3 12.Qa8 Qa8 13.ab3 Bb4 14.Ke2 (14.Nc3 Qe4) 14...Qd5–/+; B) 11.Qc2 Bb4 12.Nbd2+= 0-0 13.Be5 Qd5 14.0-0-0 Qa2) 9.Nd4+= Qd7 (9...a6 10.Ne6 fe6 11.ba6 c6 12.c5 b5 13.Bb5 cb5 14.Qb5 Kf7) 10.Nd2 Be7 (10...a6 11.Ne6 fe6 12.Nf3 Be7 13.Bd3 Nb7 14.0-0 Nc5) 11.Be2 (11.Bd3 Nb7 12.N2b3 0-0 13.Nc6 Nc5 14.Nc5 bc5) 11...0-0 (11...a6 12.Qc2 0-0 13.0-0 c5 14.Ne6 fe6) 12.Bf3 (12.0-0 a6 13.Qc2 c5 14.Ne6 fe6) 12...Rae8 (12...d5!?+= 13.Ne6 fe6 14.Rc1 a6) 13.Nc6+/- (13.0-0 d5 14.cd5 Bd5) 13...Ra8 (better is 13...Bg4!? 14.Na5 Bf3 15.Nf3 ba5 16.Qa5 Ra8+/-; 13...d5 14.Ne7 Re7) 14.Na5+- ba5 15.Ba8 Ra8 16.Qa5 d5 17.cd5 (17.Rd1!? Qe8+-) 17...Qd5 18.0-0 c6 (18...a6 19.Rfd1 ab5 20.Qc7+-) 19.Nb3 (19.a4!? Bd7+-) 19...cb5 20.Rfd1 (20.Nd4 b4 21.Qd5 Bd5+-) 20...Qg5+/- 21.f4 Qg6 (21...Qh5 22.Bf6 Bf6 23.Rac1+-) 22.Bf6 (better is 22.Qb5!? Bg4 23.Qb7 Qe4 24.Qe4 Ne4+-) 22...Bf6+/- 23.Rac1 a6 (23...Qe4 24.Qd2+/-) 24.Nc5+- Bh3 25.Qd2 (25.Rd2 Be7+-) 25...Rc8 (25...Bg4!? 26.Qd5 Rf8+-) 26.Nd7 (26.Na6 Rf8+-) 26...Rc1 27.Rc1 (27.Nf6 Qf6 28.Qc1 Be6+-) 27...Be7?? (better is 27...Bd7 28.Qd7 h6+-) 28.Rc8 (28.Rc8 Bf8 29.Rf8#) 1–0. Hingst,Thomas (2085) – Wieland,Daniel (1695), RSS5E NoEngine–98, 2009.

5.b5 Na5 6.Qa4 b6 7.Nf3 Nh6 8.d4+= f6 9.Nbd2 Be7 10.Bd3 0-0 11.Qc2 f5 12.de5 de5 13.Ne5 Bb4 14.0-0 Nf7 15.Nf7 Rf7 16.Nf3 Bd6 17.e4 fe4 18.Be4 Nc4 19.Ba8 Qa8 20.Ng5 Qd5 21.Qh7 Kf8 22.Ne6 Qe6 23.Qh8 Ke7 24.Rae1 (24.Rae1 Ne5 25.Be5 Be5 26.f4 Bd4 27.Kh1+-) 1–0. pcmvr (2745) – taxista (2350), net–chess.com, 2007.

5.b5 Na5 6.Nf3 Nc4 7.Qb3? Nb2 8.Qb2 Be7 9.Nc3 Nf6 10.Be2 0-0 11.0-0 h6 12.Rfd1 Nh5 13.Ne5= de5 14.Bh5 f5 15.d4 ed4 16.Rd4 Bd7 17.Rad1+/- Bd6 18.Nd5 Qg5 19.Bf3 Be8 20.Nc3 Rb8 21.e4 Bh5 22.Qe2 Bf3 23.Qf3 fe4 24.Qe4 Rbe8 25.Qd5 Qd5 26.Nd5 Re2–/+ 27.a4?? Rff2-+ 28.Rg4 Kh7 29.Nc3 Rc2 30.Ne4–/+ Rf7 31.Rg3?? Bg3-+ 32.hg3 Ra2 33.Nc3 Ra3 34.Ne4 Ra4 (34...Ra4 35.Nc5 Rb4 36.Nb7 Rb5-+) 0–1. gtate (1980) – sirky (1985), net–chess.com, 2005.

5.Nf3 Nb4 6.d4 Bg4?? 7.Qa4+/- (worse 7.de5 de5 8.Be5 f6=+) 7...Nc6 8.d5 Bf3 9.gf3 Nge7 10.Bg2 Qd7 11.h4?? (better 11.dc6 Nc6 12.Rg1+/-) 11...Nd8 12.Qb3 b6 13.a4 a5 14.h5 Nb7 15.Bh3 Qd8?? (15...f5 16.Nc3-/+) 16.Qc2 (better 16.Qb5 Nc6 17.Qc6 Ke7 18.Qb7+-) 16...Nc5=+ 17.Nd2 Ng8 18.0-0-0 Be7 19.Rdg1 g6 (19...Bf6!?=+) 20.hg6= hg6 (20...fg6 21.Be6 Bf6 22.Rh7+/-) 21.Bd7+= Qd7 The isolani on a4 becomes a target (21...Nd7 22.Rh8 Discovered attack; 21...Qd7 22.Rh8 Discovered attack; 21...Kd7 22.Rh8 Discovered attack) 22.Rh8 0-0-0 23.Ne4 Na4 (worse 23...Qa4 24.Nc5 Qc2 25.Kc2 bc5 26.Ra1+/-) 24.Ba1 Nc5 (24...Nf6 25.Nf6 Bf6 26.Rh7+=) 25.Nc5+= bc5 26.Bc3 a4 27.Kd2 Bf6 (27...Nf6 28.Rhh1+/-) 28.Rh7+- Qe8 29.Ra1 Ne7 (29...Bg5 30.Qa4 Qa4 31.Ra4+-) 30.Ra4 Qg8 31.Ra8 Kd7 (31...Kb7 32.Rd8 Qd8 33.Rf7 Bh4 34.Qb3 Kc8+-) 32.Qa4 c6 33.Qa7 Ke8 34.Rd8 Kd8 35.Qa8 (35.Ba5 Ke8 36.Qb8 Nc8 37.Qc8 Ke7 38.Qg8 Kd7 39.Rf7 Be7 40.Qd8) 35...Kd7+- 36.Qg8 (36.Qb7 Ke8 37.Ba5 Kf8 38.Qb8 Nc8 39.Qc8 Ke7 40.Bd8 Qd8 41.Qe6 Kf8 42.Qf7) 36...Ng8 37.Rf7 Ke8 38.Ra7 cd5 39.cd5 Ne7 40.e4 Bg5 41.Kd3 Bh4 42.Be1 Nc8 43.Rc7 Kd8? (43...Ne7 44.Bd2+-) 44.Rg7 (better 44.Ba5 Ne7 45.Ra7 Kc8+-) 44...Ne7 45.Rh7 Bg5 (45...g5 46.Ba5 Kd7 47.Rh8+-) 46.Bd2 (46.Ba5 Kd7+-) 46...Bf6 (46...Bd2 47.Kd2 Nc8 48.Ke3+-) 47.Ba5 (47.f4!? ef4 48.Bf4 Kc7+-) 47...Kd7 48.Bb6 (48.Rf7 Bg5+-) 48...Bg5 (48...Ke8 49.Ke3+-) 49.Ba7 (better 49.f4!? ef4 50.e5 de5 51.Bc5 Ke8+-) 49...Bc1 50.Bb6 Bb2?? (50...Bg5 51.f4 ef4+-) 51.Ba5 Bd4 52.Bd2 Bf2 (52...Ke8 53.Rh8 Kf7 54.Rd8+-) 53.f4 (better 53.Bg5 Kc7+-) 53...Bg3 (53...Ke8 54.fe5 de5 55.d6+-) 54.f5 gf5 55.ef5 (55.Bg5!? Bf4 56.Be7 c4 57.Kc4 fe4 58.Bf8 Ke8 59.Bd6 Bg5+-) 55...Ke8 (55...Bh4 56.Rh4 Nf5 57.Rh7 Kc8 58.Ba5+-) 56.f6 Nd5 (56...Ng8 57.f7 Kf8 58.fg8B Kg8+-) 57.f7 Kf8 58.Bh6 Ke7 59.f8Q Ke6 60.Qf7 1-0. jhonores (2215) - Estebanrm94 (2190), Rated Blitz game, lichess.org, 2020.

5.h3 Nb4-/+ 6.d4 ed4 7.Bd4 Nf6 8.Qb3 c5 9.Bc3 Qb6 (9...d5 10.Nd2-/+) 10.Nd2 (10.Bf6 gf6 11.a3 Nd5 12.Qa4 Bd7=) 10...Be7 11.a3 Nc6 12.Qc2 (12.Qb6 ab6 13.Ne2 0-0=+) 12...0-0 13.Ngf3 Qc7 14.Bd3 Ne5 The isolani on c4 becomes a target 15.Ne5 de5 16.Nf3 Bd6 17.0-0 (17.Ng5 Kh8=+) 17...Bd7-/+ 18.Rfd1 Bc6 19.Ng5 h6 20.Ne4 Ne4 21.Be4 Rfd8 (21...Be4 22.Qe4 Rad8 23.Rab1=+) 22.Bf5 (22.Bc6 Qc6 23.Rd5 f6=+) 22...g6 23.Bg6 (23.Be4!?=+) 23...fg6-/+ 24.Qg6 Kf8 (better 24...Qg7 25.Qg7 Kg7 26.Rd6 Rd6 27.Be5 Rf6-+) 25.Qh6= Ke8 26.Qg6 Ke7 27.Qg7 Ke6 28.Qg4 Kf7 29.Qh5 Kf8 30.Qh6 Ke8 31.Qg6 Kd7?? (better 31...Kf8=) 32.Be5+- Kc8 33.Qe6 (better 33.Bd6 Qd7 34.Bc5+-) 33...Kb8 (33...Qd7 34.Qd6 Qd6 35.Bd6 Rg8+-) 34.Bd6 (34.Rd6 Bd7 35.Rd7 b6 36.Rc7 Rd1 37.Rd1 b5 38.Rd8) 34…Rd6 1-0. zembelek1 (2145) - profesorek1992 (2160), Rated Blitz tournament, lichess.org, 2016.

6.Nc3 a6 7.ba6 Ra6 8.d4 Nf6 9.Nf3 Ng6 =.

6.Nc3 Nf6 7.Nf3 Ng6 8.Be2 Be7 9.0-0 0-0 10.d4 e4 11.Ng5+= d5 12.cd5 Bd5 13.Qc2 Bb4 14.Nce4 Be4 15.Ne4+- Ne4 16.Qe4 b6 17.d5 Bd6 18.Rac1 Re8 19.Qg4 Re7 20.Bd3 Qe8 21.h4 Ne5 22.Qd4 f6+/- 23.Be2 Bc5 24.Rc5 bc5+/- 25.Qc5 Qd7 26.Ba3 Rf7 27.e4 Qe8 28.Bh5 g6+/- 29.Be2 Nd7 30.Qd4 Qe5 31.Qe5 Ne5 32.Rc1 Re8 33.f4 Nd7 34.Bd3 Nb6+/- 35.Rc6 Rd7 36.Rf6 Rf7? 37.Rf7 Kf7 38.Bc5 Nd7 39.Bd4 Nb6 40.Kf2 h6 41.g4 Nd7 42.e5 Nb6 43.e6 Ke7 44.Bg6 (44.Bg6 Rg8 45.Bc5 Kf6 46.f5 Nd5 47.Ba7+-) 1–0. Wall,Bill – Corny, internet, 2001.

6.d4 Ng6 7.Nd2 ed4 8.Bd4 N8e7 9.Ngf3 Nf5 +=.

6.d4 Ng6 7.Nf3 ed4 8.Bd4 Nf6 9.Bb2 Be7 10.Be2 0-0 11.Nd4 Bd7 12.Nc3 a6 13.a4 ab5 14.ab5 Ne5 15.0-0 Bg4 16.Nf3 Bf3 17.gf3 Qd7 18.Kh1 Qh3 19.Rg1 Ra1 20.Ba1 Rd8 21.Qf1 Qf1= 22.Rf1 Ned7 23.Nd5 Nd5 24.cd5 Ra8 25.Re1 Nc5 26.Bc4 Bf8 27.Bd4 g6 28.Ra1 Ra1 29.Ba1 Bg7 30.Bg7 Kg7 31.Kg1 Kf6 32.f4 Kf5 33.f3 h6 34.h4 g5 35.fg5 hg5 36.h5 Kf6 37.Kg2 Kg7=+ 38.Kg3 f5 39.Ba2 Kf6 40.Bb1+= Nd7 41.f4 ½–½. Oliveira,Leonardo – Oliveira,Tiago Batista, BRA–ch66 sf2, 1999.

6.Nf3 b6 7.Nc3 Qd7 (7...Nf5 8.d4+=) 8.Bd3 (8.d4 Ng6+/-) 8...f5 (8...Nf6 9.0-0+=) 9.Be2+/- e4 10.Nd4 0-0-0 (10...a6!?+=) 11.a4+/- g5? (better is 11...d5+/-) 12.Ne6 (12.Ne4!? Bc4 13.Ng5 Bd5+-) 12...Qe6 13.Nd5 Nd5 (13...Ng6 14.a5 Ne5 15.ab6 ab6+-) 14.cd5 (14.Bh8?! Nb4+-) 14...Qd5 15.Rc1 Qe6 16.Bh8 Ne7 (16...d5 17.a5!+-) 17.Qc2 Rd7 18.a5! Ng6 (18...ba5 19.Bc3 Decoy) 19.Qc6 Kd8 20.Bc4 d5 21.Qe6 dc4 22.Bf6 Be7 23.Qg8 Nf8 24.Qf8 1–0. Janek – Vesely, internet, 2016.

6.Nf3 c5 7.Nc3 f6 8.Be2 b6 (8...d5!?=) 9.0-0+/- a5 10.ba6! Ra6 11.d4 Ng6 12.de5 fe5 13.Nb5 Nf6 14.Ng5 Bd7? (14...Bg8 15.Bd3+/-) 15.f4 (15.Nd6 Bd6 16.Qd6 Qa8+-) 15...h6? (15...ef4 16.Bh5 Be7 17.Nh7 Nh5 18.Qh5 Kf7 19.Qd5 Be6 20.Ng5 Bg5 21.Nd6 Qd6 22.Qd6 Rd8 23.Qc7 Be7 24.ef4 Rd7+-) 16.fe5+- Ne5 17.Be5 de5 (17...hg5 18.Rf6! Bb5 19.Bh5 Kd7 20.Rf7 Kc8 21.cb5 Ra3 22.Bg4 Kb8+-) 18.Bh5 Nh5 19.Qh5 1–0. pcmvr – cervejarj (2280), net–chess.com, 2014.

6.Nf3 Qd7 7.d4 ed4 (7...e4 8.Ng5 Bf5 9.Nc3+=) 8.Nd4+= 0-0-0 (8...Nf6 9.Bd3+=) 9.Bd3 h5 (9...Kb8 10.Ne6 fe6 11.0-0+=) 10.0-0+/- h4 11.h3 Bh3 12.gh3 Qh3 13.Qf3 Qd7 (13...Qf3 14.Nf3 Rh5 15.Kh2+/-) 14.Nc3 (14.Qf7 h3 15.Qe6 Nf6+-) 14...Kb8 (14...Nh6 15.Nd5 Kb8 16.Kg2+-) 15.a4 (15.Qf7 Qg4 16.Kh2 Nh6+-) 15...Nf6 16.Rfb1 (16.a5 Qg4 17.Qg4 Ng4+-) 16...Ng6 (16...Ng4 17.a5 (17.Qf7 Ne5 18.Bf5 Nf7 19.Bd7 Rd7-/+) 17...Ne5 18.Qe2+/-) 17.Bf5 (17.Bg6 fg6 18.a5 Qg4 19.Qg4 Ng4+-) 17...Qe8? (17...Ne5 18.Qg2 Qe7+-) 18.Kf1?? (better 18.Bg6 fg6 19.a5+-) 18...Ne5+= 19.Qh1 (19.Qe2 h3+=) 19...g6 (19...Nc4!? 20.b6 ab6=+) 20.Be4 (20.Ne4!? Nh5 21.Bh3+/-) 20...Ne4= 21.Ne4 f5 (21...Bh6 22.Ke2 f5 23.Nf6=) 22.Ng5 Bg7 (22...Be7!? 23.Nge6 Nc4 24.Nd8 Bd8+-) 23.Nge6+- Rd7? (23...Bf6 24.Nd8 Qd8 25.a5+-) 24.a5 (24.Nc6 Ka8 25.Ncd8 c5 26.Nb7 Kb8 27.Ng7 Qg8 28.Nd6 Nc4 29.Nc4 Qc4 30.Kg1 Qe4 31.Nf5 Qh1 32.Kh1 Re8 33.Nh4 Rh7+-) 24...Re7? (better 24...Nc4 25.a6 d5 26.Ng7 Qe4 27.Qe4 fe4+-) 25.a6 Qc8 26.Ng7 Rg7 (26...f4 27.ab7 Qg8 28.Nc6 Nc6 29.Qc6 Re4 30.Qe4 Rh5 31.Ra7 Rd5 32.Ra8 Kb7 33.Rg8 Kb6 34.Qd5 fe3 35.Qc6 Ka5 36.Ra8 Kb4 37.Bd4) 27.ab7 Qb7 28.Nc6 Nc6 29.bc6 Qa8 30.Bg7 (30.Bg7 Qb7 31.Rb7 Kc8 32.Raa7 Kd8 33.Rb8 Ke7 34.Rc7 Ke6 35.Qd5) 1-0. OnlyPolishOpening (2140) - chessperu22 (2045), lichess.org, 2020.

6.Nf3 f5 7.d4+= e4 8.Nfd2 c6 9.a4 d5 10.Be2 Nf6 11.0-0 g6 12.Qb3 Bh6 13.f4 0-0 14.Na3 g5 15.fg5 Bg5 16.Nc2 Ng6 17.Ba3 Rf7 18.bc6 bc6 19.Nb4 Qe8 20.cd5 cd5 21.Bb5 Bd7?? 22.Rf5!+- Be3 23.Qe3 Ng4 24.Bd7 Ne3 25.Be8 Rf5 26.Bc6 Rd8 27.Re1 Ng4 28.Bd5 Rfd5 29.Nd5 Rd5 30.Bc5 Nf6 31.Ne4 Ne4 32.Re4 Rd7 33.Re8 Kf7 34.Ra8 Ke6 35.Ra7 Ra7 36.Ba7 Ne7 37.Kf2 Nc6 38.Bb6 1–0. Bendig,Frank – Zwick,Werner, corr, 1986.

6.Nf3 f5 7.Be2 Nf6 8.0-0 g6 9.d3 Bg7 10.a4 0-0 11.Nbd2 Qe8 12.Nb3 Rd8 13.a5 c6 14.Nfd2 cb5=+ 15.cb5 Qb5 16.d4 Qe8 17.de5 Nd7 18.ed6 Bb2 19.de7 Qe7 20.Ra2 Bg7 21.Rc2 Nb8 22.Nd4 Bd4 23.ed4 Rd4 24.Qa1 Rfd8 25.Nf3 R4d6 26.Rfc1 Nc6 27.Bb5 (27…Qg7 28.Qg7 Kg7 29.a6 Rd1 30.Bf1 Rc1 31.Rc1–/+). hal1958 – pawnofdoom, playchess.de, 2003.

6.Nf3 Nf6 7.Be2 g6 8.Ng5 Bh6 9.Ne6+/- Qd7?? 10.Nf4!+- ef4 11.Bf6 Rg8 12.Bg4 Qd8 13.ef4 Bf4 14.Qf3 Be5 15.Be5 de5 16.Qb7 Rc8 17.Bc8 Nc8 18.0-0 1–0. Bonetti,Shane – guest483, ICC, 2002.

6.Nf3 Ng6 7.d4 ed4 8.Bd4 Nf6 9.Bb2 Be7 10.Be2 0-0 11.Nd4 Qd7 12.0-0 Ne4 13.Nc3 Nc3 14.Bc3 Bf6 15.f4 Bf5 16.Nf5 Qf5 17.Bf6 Qf6 18.Bf3 Rae8 19.Re1 Qc3 20.Rc1 Qa3 21.Qd2 Re7 22.Bb7+/- Rfe8 23.Bc6 Rb8 24.g3 a6 25.Qc3 Qa2?? 26.Ra1+- Re3 27.Re3 Qc4 28.Qc4 ab5 29.Bb5 (29.Bb5 Nh8 30.Qc6 Rf8 31.Ra8 g5 32.Rf8 Kg7 33.Qc3 Kh6 34.Qf6 Ng6 35.fg5 Kh5 36.Be2#) 1–0. pierre – mbz_iran, internet, 2008.

6.Nf3 Ng6 7.d4 ed4 8.Nd4 Nf6 9.Ne6 fe6 10.Bd3 Be7 11.Bg6 hg6 12.Qd3 Rh6 13.Nd2 e5 14.Rd1 Qc8 15.h3 a6 16.a4 ab5 17.ab5 Qf5 18.e4 Qg5 19.Nf3 Qg2?? 20.Rh2+- (20...Qh3 21.Rh3 Rh3 22.b6+-) 1–0. Bonetti,Shane – ches_man, ICC, 2002.

5.d4 ed4 6.ed4 Qe7 7.Qe2 d5 8.cd5 Qb4? 9.Bc3 Qd6 10.de6 +-.

5.d4 ed4!? 6.ed4 Qe7= 7.Qe2 d5 8.cd5 Bd5 9.a3 Be6 10.Nc3 =.

5.d4 ed4 6.Bd4 Nc6 7.Bc3 a6 8.Nf3 Be7? 9.Bg7+/- Bf6 10.Bh8 Bh8 11.Nbd2 Nb4? 12.Rb1+- Na2 13.Qc2 Nc3 14.Rb7 Qc6 15.Qb3 Ne7? 16.Nd4+- Bd4 17.ed4 Bc8 18.Rb8 Rb8+/- 19.Qb8 Na4 20.Qb3 Nb6 21.d5 Qb7 22.Be2 Nf5 23.0-0 Nd4 24.Qe3 Ne6 25.de6 fe6 26.Bh5 Kd7 27.Rb1 c5 28.Qe4 Qe4 29.Ne4 Nc4 30.Nf6 Kc6 31.Rb8 Bb7? 32.Bf3 Kc7 33.Rb7 (33.Rb7 Kc8 34.Rh7+-) 1–0. gtate (2055) – vaidasmp (1920), net–chess.com, 2006.

5.d4 e4 6.d5+= Bf5 7.Ne2 Be7? 8.Bg7+- Bf6 9.Bh8 Bh8 10.Nd4 Bg4 11.Be2 Be2 12.Qe2 c5 13.dc6! bc6 14.Qh5 c5 15.Qh7 cd4 16.Qg8 Ke7 17.Qh8 de3 18.fe3 Qa4 19.Qh4 Kd7 20.0-0 Qb4 21.Rf7 Kc6 22.Qe4 Kb6 23.Rb7 Ka5 24.Qd5 Qc5 25.Rb5 Qb5 26.Qb5# 1–0. b4_player – opponent, gamecolony.com, 2007.

5.Nf3 Nf6 =.

5.a4 a6 6.Nc3 Ngf6 7.Nf3 h6 (7...Be7 8.Ng5=) 8.Be2 g5 (8...d5 9.Qb3 dc4 10.Bc4 Bc4 11.Qc4=+) 9.d4+= e4 (9...g4 10.Nd2+=) 10.Nd2 (10.Ne4 Ne4 11.d5 Ndf6 12.de6 fe6+-) 10...Bf5 11.Qc2 The pressure on e4 grows 11...Qe7 12.a5 Bg7 13.g4 (13.0-0 h5+=) 13...Bh7 (13...Bg4? 14.Bg4 Ng4 15.Nd5+- (15.Nde4?! 0-0-0+=; 15.Qe4?! Qe4 16.Nce4 Rg8+=; 15.Nce4?! 0-0-0+=)) 14.Qa4 0-0 (14...Qe6 15.Rb1=) 15.b5 (15.h4 Bg6+=) 15...Rab8 (15...b6 16.h4+=) 16.Ba3 (16.h4 c5+=) 16...Qe6 (16...ab5 17.Qb5 c6 18.Qb3+=) 17.Rg1 (17.ba6 ba6 18.Qc6 Rbc8+=) 17...Rfc8 (17...Ra8 18.ba6 ba6 19.Nd5=) 18.Nb3 (18.ba6 ba6 19.Qc6 Ne5 20.Qa6 Ra8+=) 18...Kh8 19.h3 Nf8 (19...ab5 20.Qb5 c6 21.Qb4=) 20.ba6 (20.h4!?=) 20...ba6=+ 21.Rb1 Qe8 (better 21...c5!?=+) 22.Qe8 Re8 23.c5 dc5 (better 23...d5!?+-) 24.Nc5+- (24.Ba6?! cd4 25.ed4 Ne6=+) 24...Rb1 25.Nb1 Rb8 (25...Ra8 26.Na6 (26.Ba6?! Ne6 27.Ne6 fe6+-) 26...Bg6 27.Nc3+-) 26.Nc3 (26.Kd2 Ra8+-) 26...c6 (better 26...N6d7!? 27.Na6 Rb3 28.Bf8 Bf8+-) 27.Kd2+- N8d7 28.Rb1 (28.Na6 Rb3 29.Ra1 Kg8+-) 28...Rb1 29.Nb1 Nb8 (29...Nc5 30.Bc5 Nd7 31.Bd6+-) 30.Na6 Na6 31.Ba6 Nd7 (31...h5 32.Bb7 Nd7 33.a6 hg4 34.a7 gh3 35.a8Q Bg8 36.Bc6+-) 32.Bc8 Nf8 (32...Nf6 33.a6 Ne8 34.a7+-) 33.a6 1–0. Pisarsky,Georgy (2050) – Popova,Adelanda (1640), Sukharev Memorial Seniors Open, 2011.

5.a4 c6 6.b5 g6 7.Nf3 Bg7 8.Be2 h6 9.0-0 d5 10.d4 e4 11.Nfd2 Ne7 12.Nc3 0-0 13.Ba3 Re8 14.bc6 bc6 15.cd5 cd5 16.Nb5 Nf5 17.Rc1 Bf8 18.Bf8 Rf8 19.Nc7 Rc8 20.Ne6 fe6 21.Rc8 Qc8 22.Qa1 Qc2 23.Rd1 Rc8 24.Bb5 Nf8 25.Nf1 Nd6 26.Rb1 Rc7 27.Rb2 Qc3 28.Qa2 Qe1 29.Rc2 Qa5 30.Rc7 Qc7 31.Qa3 Nb5 (31...Nd7 32.Be2=) 32.ab5+= Nd7? (better 32...Qb6+=) 33.Qe7+- Qb7 34.Qe6 Kg7 35.Qe7 (35.Qc6 Qc6 36.bc6 Nb6+/-) 35...Kg8+/- 36.h4 Qb5 37.h5 (better 37.Qe8 Kg7 38.h5+-) 37...Nf8+/- (37...gh5? 38.Ng3 Qb1 39.Kh2+-) 38.hg6 Ng6 (38...Qd7!? 39.Qd7 Nd7=) 39.Qa7 Qb1? (better 39...Qe8+/-) 40.Qa8+- Kg7 41.Qd5 Ne7 42.Qe5 Kf7 (42...Kf8 43.d5 Qb5 44.Qf6 Ke8 45.d6+-) 43.d5 Qd1 (43...Ng6 44.Qc7 Kf8+-) 44.Qe6 Kf8 45.d6 Ng8 46.Qc8 (46.Qc8 Kf7 47.d7+-) 1-0. BeepBeepImAJeep (2870) - tuti2500 (2360), lichess.org, 2017.

5.a4 f5 6.Nf3 h6 7.b5 Ngf6 8.Be2 Be7 9.Nc3 0-0 10.d4 e4 11.Nd2 Qe8 12.Nb3 Qg6=+ 13.g3 Qh7 14.Qc2 g5 15.0-0-0 d5=+ 16.cd5 Nd5 17.Nd5 Bd5 18.Nc5 Nf6 19.Bc4 Qf7 20.Bd5 Nd5 21.Qb3 Nb6 22.Kc2 Rfb8 23.Qf7 Kf7 24.Kb3 a6 25.a5 Nd5 26.Nd7 Rd8–/+ 27.Ne5 Ke6 28.Kc4 ab5-+ 29.Kb5 c6 30.Ka4 Nb6 31.Kb3 Ra5 32.g4 Rb5 33.Kc2 fg4 34.Ng4 h5 35.Ne5 Rf8 36.Rdf1 Na4 37.Bc1 Nb6 38.Rhg1?? Ra8-+ 39.Kd1 Ra2 40.Bd2 Rbb2 41.Bc1 Rb1 42.f4 Ba3 (42...Ba3 43.d5 Nd5 44.f5 Ke5 45.Rg5 Rc1#; 42...Na4 43.d5 Kd5 44.Nd3 Nc3 45.Ke1 Re2#) 0–1. Timmermans,Mark – Ter Schegget,Bram, Hengelo U14 op, 2004.

5.a4 Ngf6 6.Be2 d5 7.c5 a5 8.b5 Bc5 9.Ba3 d4 10.Nf3–/+ d3 11.Bf1? e4-+ 12.Ng5 Bf5 13.g3 Ba3 14.Ra3 h6 15.Nh3 Bg4 16.Qc1 Bf3 17.Rg1 Ne5 18.Nf4 g5 19.Ng2 Bh5 20.h3 Nf3 (20...Nf3 21.Kd1 Ng1 22.g4 Bg6-+) 0–1. Esteban,Amalia G – Keber,Ernst, JP, 2003.

5.a4 g6 6.b5 Bg7 7.Nf3 Ne7 8.Be2 h6 9.0-0 c6 10.d4 e4 11.Nfd2 d5 12.Nc3 0-0 13.Ba3 Re8 14.bc6 bc6 15.cd5 cd5 16.Nb5 Nf5 17.Rc1 Bf8 18.Bf8 Rf8 19.Nc7 Rc8 20.Ne6 fe6 21.Rc8 Qc8 22.a5 Qc3 23.a6 Rb8 24.Qc1 (24.Nb1 Qb2=) 24...Qa5 (24...Qc1 25.Rc1 Rb2 26.Rd1-/+) 25.Qc6 Nf8 26.Nb1 (26.Qc2 Qa3 27.Rb1 Ne3 28.fe3 Qe3 29.Kf1 Qf4 30.Ke1 Rb1 31.Nb1 Qh4 32.Kf1 Qh2=+) 26...Qb6 (26...Rb2!? 27.Bg4 Rb6=+) 27.Qb6= Rb6 (worse 27...ab6 28.Nc3+/-) 28.Nc3 Nd6 29.Ra1 Nd7 30.Bg4 Nc4 31.Nd5 ed5 32.Bd7 Kf7 33.h4 Ke7 34.Bg4 Nd6 (34...Rb2 35.Kf1+=) 35.Kh2 Rb2 36.Kg3 h5 37.Bh3 Kf6 (better 37...Nc4!?+=) 38.Ra5+/- Rb5 39.Rb5 Nb5 40.Bd7 Nc7 41.Bc8 Nb5 42.Bb7 Ke6 (42...Nc3!?+/-) 43.Kf4+- Nd6?? (better 43...Nc3+-) 44.Kg5 Nf5 (44...Nb5+-) 45.Bc8 Kd6 46.Bf5 gf5 47.Kf5 (47.Kh5!? Kc7+-) 47...Kc6 48.Ke5 Kb6 49.Kd5 Ka6 50.Kc6 Ka5 51.d5 Kb4 52.d6 a5 53.d7 a4 54.d8Q a3 55.Qd4 Kb3 56.Qa1 (56.Qa1 Kb4 57.Qe5+-) 1-0. BeepBeepImAJeep - tuti2500 (2355), lichess.org, 2017.

5.a4 g6 6.b5 Bg7 7.Nf3 h6 8.Be2 Ne7 9.d4 0-0 10.0-0 c6 11.Nc3 Qc7 12.Ba3 (12.bc6 bc6 (12...Nc6? 13.d5+-; 12...Qc6? 13.d5 Qb6 14.de6 Qb2 15.Qd6+-) 13.d5 Bg4=) 12...Rfd8 (12...c5 13.d5 e4 14.Ne4=) 13.Rc1 (13.d5 cd5 14.cd5 Qc3 15.de6 Nc5 16.ef7 Kf7 17.Bc5 dc5+=) 13...Bg4 (13...ed4 14.ed4 c5 15.Re1=) 14.h3 Bf3 15.Bf3 (worse 15.gf3 ed4 16.ed4 Nf5-/+) 15...Nf5 16.d5 c5 17.Be2 Ne7 18.Bd3 Kh7 19.Bb2 f5 20.f4 (20.e4 Rf8+=) 20...Rf8 21.Ba1 a5 22.Kh1 b6 23.Qc2 Rae8 24.Rce1 e4 25.Ne4 (better 25.Be2=) 25...fe4-/+ 26.Be4 Nf5 (26...Ba1 27.Ra1 Nf5 28.Bf5 Rf5 29.Rf3-/+) 27.Bg7 Kg7 28.Kh2 Nf6 29.Bf5 gf5 30.Qf5 Ne4 31.Qg4 Kh7 32.Qe2 Qg7 33.g4 Qc3 34.Rc1 Qd2 (better 34...Qb3!?-/+) 35.Qd2= Nd2 36.Rf2 Ne4 37.Rg2 Nf6 38.Rg3 Re4 39.Kg2 Rfe8 40.Kf2 R4e7 41.Ke2 Ne4 42.Rf3 Nf6 43.Kd3 Kg6 44.Re1 Ne4 45.h4 Kf6 46.g5 (46.Rg1 Rg7+/-) 46...hg5 (46...Kf5!?+=) 47.fg5+/- (47.hg5 Kf5 48.Rff1 Rh8=+) 47...Kg6 (47...Kg7 48.Ref1+/-) 48.Rf4 (48.Rg1!?+-) 48...Ng3+/- 49.e4 1-0. BeepBeepImAJeep (2865) - tuti2500 (2360), lichess.org, 2017.

5.b5 c6 6.a4 cb5 7.cb5 f5 (7...Ngf6 8.Nc3=+) 8.Nf3= Ngf6 9.Be2 Be7 10.0-0 h6 11.d4 0-0 (11...e4 12.Nh4 0-0 13.Ng6+=) 12.Nc3 (12.de5!? de5 13.Ne5 Ne5 14.Be5+/-) 12...e4= 13.Nd2 d5 14.Qb3 Kh8 15.Ba3 Rc8 16.Rac1 f4 17.ef4 Ba3 18.Qa3 Nh7 (18...Ne8 19.f5 Bg8 20.Bg4+=) 19.g3 Bh3 20.Rfe1 g5? (20...Nhf6 21.a5+/-) 21.fg5?? (21.Nd5 Rc1 22.Qc1 Ndf6 23.Nf6 Qf6+-) 21...Ng5? (21...Qg5 22.Ncb1 Nhf6+/-) 22.Nd1?? (better 22.Nd5!? Nf6 23.Nf4+-) 22...Qf6 (22...Rc1!? 23.Qc1 Qf6+=) 23.Rc8+/- Rc8 24.Qe3 Rf8 25.Nc3 Rf7? (better 25...Qf5+/-) 26.Nd5+- Qd6 (26...Qf5 27.Nf4 Nf6 28.f3 (28.Nh3 Nh3 29.Kg2 Ng5+/-) 28...ef3 29.Nf3 Nf3 30.Bf3+-) 27.Nf4 (27.Nc3!? Nf6+-) 27...Nf6 28.Nc4 Qd7? (28...Qb4 29.Rc1 Qa4+-) 29.Ne5 (29.Nh3?! Qh3 30.f4 ef3 31.Bf3 Qf5+-) 29...Qe6 (29...Qe8 30.g4 Bg4 31.Ng4 Ng4 32.Bg4 Qg8+-) 30.Ne6 (30.Ne6 Be6 31.h4 Nh3 32.Kg2+-) 1-0. BeepBeepImAJeep (2775) - Vpered64 (2240), lichess.org, 2016.

5.b5 Be7 6.Nf3 f5 7.Be2 Ngf6 8.0-0 0-0 9.Ng5 Bf7 10.Nf7 Rf7 11.d4 e4 12.Nd2 c6 13.a4 d5 14.c5 Qc7 15.a5 Raf8 16.b6+= ab6 17.ab6 Qc8 18.Ra7 Nb8 19.Ra8 Qe6 20.Qa1 Nfd7 21.f4 ef3 22.Bf3 Qe3 23.Kh1? Qd2-+ 24.Bc1 Qd3 25.Bf4 Bf6 26.Rd1 Qb5 27.Bd6 Re8 28.Qc3 Qc4 29.Qd2? Be7 30.Qf4?? Bd6 31.Qd6 Rf6 32.Qf4 Qc3 33.Rc1 Re1 (34.Re1 Qe1#) 0–1. TIROLOCO – Schnick, Live Game Caissa's Web, 2004.

5.Nc3 Nb6 6.d3 Nf6 7.Nf3 Be7 8.Be2 0-0 9.0-0 c5 10.b5 a6 11.a4 a5 12.e4 Nbd7 13.Nd5 Bd5 14.cd5 b6 15.Nd2 Ne8 16.Nc4 f5 17.ef5 Rf5 18.Bg4+- Rf8 19.Bd7 Qd7 20.Nb6 Qb7 21.Na8 Qa8 22.Qb3 Nc7 23.b6 Na6 24.Qb5 Nb4 25.Bc3 Qd5 26.Qa5 Qd3? 27.Bb4 cb4 28.Qb4 Rb8 29.a5 Qa6 30.Rfc1 g6 31.Qc4 Kg7 32.Qa6 (32.Qa6 Kf6 33.Qa7+-) 1–0. Fredek (2065) – Guest1241325, Freundschaftspartie, 5m + 0s, 2006.

5.Nc3 Be7 6.Nf3 Ngf6 7.d4 c6 8.Be2 e4 9.Nd2 d5 10.Qb3 0-0 11.a4 (11.0-0 dc4 12.Bc4 Bc4 13.Nc4 Nb6=) 11...Rb8 (11...Qc7 12.cd5 cd5 13.0-0=) 12.b5 Kh8 13.Ba3 Ba3 14.Qa3 Ng8 (14...dc4 15.Bc4 Bc4 16.Nc4=) 15.0-0+= Qg5 16.Qd6 (16.Rfb1 Bh3 17.Bf1 Ne7+=) 16...Ne7= 17.Qg3 Qh6 18.h4 (18.bc6!? bc6 19.Qc7+=) 18...Nf5+= 19.Qg5 Qh4 20.Qh4 Nh4 21.Rfb1 f5 22.g3 Ng6 23.bc6 bc6 24.cd5 cd5 (24...Bd5 25.a5+=) 25.Nb5= Rb7 26.a5 a6 (26...Nf6 27.a6 Re7 28.Nb3=) 27.Nd6= Rc7 28.Rc1 (worse is 28.Ba6 Rc6 29.Bb7 Rd6+=) 28...Rc1 29.Rc1 Nb8 (29...Ra8 30.Nb3+=) 30.Nb3 Rd8 31.Nb7 Rc8 32.Rc8 (32.N3c5 Kg8+/-) 32...Bc8+= 33.Nd6 Ne7 34.Nc5 Attacks the isolani on a6 34...Nbc6 35.Na6 (better is 35.Nc8 Nc8 36.Ba6+=) 35...Ba6+= 36.Ba6 Na5 37.Bb5 g6 38.Ne8 Kg8 39.Bd7 Kf7 40.Nc7 Kf6 41.Be6 Nac6 (41...Nc4 42.Bd5 Nd5 43.Nd5 Ke6 44.Nc7 Kd6 45.Nb5 Kc6 46.Nc3+=) 42.Bd5= Nb4 43.Ne8 Kg5 44.Bc4 Nbd5 45.Kg2 h5 46.Nd6 (46.f4 Kh6 47.Kf2 g5=) 46...Kf6= 47.Nb7 g5 48.Nc5 h4 49.Kh3 hg3 50.Kg3 f4 (50...Nb6 51.Bb3=) 51.Kg4 fe3 52.Ne4 Exerts pressure on the isolated pawn 52...Kg6 53.Bd3 ef2 54.Nf2 Kh6 55.Be4 Nf6 56.Kf3 Kh5 57.Kg3 Ne4 58.Ne4 Nf5 59.Kf2 Nd4 60.Ng5 Kg5 ½–½. Krivoshapko,Alexander (2100) – Nevorotov,Boris, SF OCCC, 2007.

5.Nc3 f5 6.d3 Ngf6 7.Qc2 c6 8.Nf3 Be7 9.Be2 0-0 10.0-0 Qc7 11.a4 d5 12.Ng5 Bf7 13.Nf7 Rf7 14.Qb3 d4 15.ed4 ed4 16.Na2 c5 17.bc5 Bc5 18.Bf3 Ng4 (18...Ne5!? 19.Be2 Re8–/+) 19.g3= Ndf6 20.Nb4? (better is 20.Rae1=) 20...Qb6-+ 21.Rab1 (21.a5 Qb4 22.Qb4 Bb4-+) 21...a5 (better is 21...Ne5 22.Bg2 Bb4 23.Qc2-+) 22.Bd5? (better is 22.Bd4 Bd4 23.Nd5-+) 22...Nd5 (22...Qb4?! 23.Bf7 Kf7 24.Qc2+=; 22...Bb4?! 23.c5 Qc7 24.Bf7 Qf7 25.Bd4–/+) 23.cd5 Bb4 24.Ba3 Qh6 25.h4 Ba3 26.Qa3 Ne5 27.f4 Ng4 28.Qc5 Qf6 29.Rb6 Qe7 30.Qe7 Re7 31.Rf3 Rae8 32.Rb1 Re1 33.Rf1 Rf1 34.Kf1 Ne3 35.Kf2 Nd5 36.Rb5 Nb4 37.Rf5 Nd3 38.Kf3 b6 39.Rd5 Ne1 40.Kf2 Nc2 41.Rd6 Rb8 42.Rd5 b5! 43.ab5 a4 44.Rc5 d3 45.Rd5 a3 46.Rd3 a2 (46...a2 47.Rd1 Rb5 48.Rd8 Kf7-+) 0–1. Bartle,Georg (1805) – Scholtyssek,Werner (1645), Baden–ch Seniors, 2009.

5.Nc3 f5 6.Nf3 c6 7.d4 h6 (7...Bf7 8.Be2+=) 8.b5 (8.Be2 Qb6 9.a3 Ngf6+=) 8...Bf7 9.bc6 bc6 10.Qa4 (10.Rb1 Rb8+=) 10...Qc7 11.Be2 Ngf6 Black plans e4 12.0-0 Be7 (12...e4 13.Nd2+=) 13.de5 de5 14.Qc2 g6 15.h3 (15.Rfd1 e4 16.Nd4 Rb8+=) 15...e4 16.Nd4 0-0 17.Nb3 (17.Qa4 Ne5=) 17...Rab8 18.Nd2 (18.Rfd1 Rfd8=) 18...Rfd8=+ 19.Rab1 Nc5 20.Rfd1 (20.Ba1 Rb1 21.Rb1 a6=) 20...Nd3 21.Bd3 (21.Nf1 Nb2 (worse 21...Bc4 22.Ne4 Nb2 23.Bc4 Nc4 24.Rb8 Rb8 25.Qc4 Kg7 26.Nc5 Bc5 27.Qc5+=) 22.Rb2 Rd1 23.Rb8 Qb8 24.Nd1 Be6=+) 21...Rd3 (21...ed3 22.Qc1=+) 22.Ne2= Rdd8 (22...Rbd8 23.Nf4 R3d7 24.Bc3=) 23.Nb3 (23.Nd4 Nd7=) 23...Kg7 (23...Rb4 24.Nd2=) 24.f3 (24.Nbd4 Kh7 25.Nf4 Qc8=) 24...ef3=+ 25.gf3 Kh7 (25...a6 26.e4 Rd1 27.Rd1=) 26.e4 (26.Rd8 Rd8 27.e4 Nh5=+) 26...fe4 27.fe4 (27.Rd8 Qd8 28.fe4 Rb4=+) 27...Nh5 (27...Rb4 28.Rd8 Rc4 29.Rh8 Kh8 30.Qd3 Qb6 31.Kf1–/+) 28.e5 (28.Rd8 Rd8 29.Rf1 Be6=) 28...Be6 (28...Rb4 29.Rd8 Qd8–/+ (worse 29...Bd8 30.e6 Rb3 31.ef7+-)) 29.Kg2? (better 29.Rd8 Rd8 30.Rf1=+) 29...Bf5-+ 30.Qc3 Bb1 31.Rb1 Bb4 (31...Ng7 32.Rf1 Rf8 33.Nf4-+) 32.Qe3 c5 (better 32...Ng7-+) 33.Ng3?? (better 33.a3!? Ba5 34.Na5 Qa5 35.Bc1–/+) 33...Qc6 (better 33...Rd3! 34.Qf2 Rg3 35.Qg3 Ng3 36.Kg3 a5-+) 34.Kh2 (better 34.Qe4 Nf4 35.Kh2 Qe4 36.Ne4-+) 34...Ng7 (better 34...Ng3!? 35.Qg3 Qe4-+) 35.Ne4 Increasing the pressure on the isolated pawn on c5 (35.a3 Qa6 36.ab4 Qc4=+) 35...Nf5–/+ 36.Qf3 (36.Qf4 Rb6–/+) 36...Qe6 (36...Qa6 37.e6 Qa2 38.Nf6 Kh8 39.Nd7 Kh7 40.Nf6 Kg7 41.Nd7 Kh7 42.Nf6=) 37.Nf6 (37.Qf4 Nd4 38.Bd4 cd4 39.Nd4=) 37...Kg7-+ 38.Qe4 (better 38.Qg4 Nd4! 39.Bd4 Qg4 40.hg4 cd4 41.Nd5–/+) 38...Rdc8 (38...a5!? 39.Nd5 a4 40.Nf4-+) 39.Nd5 (39.Nd7! Ra8 40.Rd1=) 39...Kf8 (39...g5 40.Rf1 Rf8 41.Nc7=+) 40.Rf1 (better 40.Qc2–/+) 40...Kg7 (better 40...Ke8!?–/+) 41.Nf4 (41.Rb1 g5–/+) 41...Qc6 42.e6 Kh7 43.Qe5 Qc7 (43...Rb7 44.Nd5 Nd4 45.e7+- (45.Nb4?! Nf3 46.Rf3 Qf3=)) 44.Qf6 (44.Qc7 Rc7 45.Be5 Rcc8 46.Bb8 Rb8+-) 44...Qg7 45.Nh5 Qf8?? (better 45...Qf6 46.Nf6 Kg7 47.Nd7 Kg8+-) 46.Qf7?? (better 46.Qe5 Qd6 47.Nf6 Kh8 48.Rf5 Qe5 49.Re5+-) 46...Qf7–/+ 47.ef7 Rb7 48.Nf6 (48.Kg1 a5 49.f8Q Rf8 50.Nf6 Rf6 51.Bf6 a4-+) 48...Kg7-+ 49.Ne8 (49.Ne4 Kf8-+) 49...Kf8 50.Rg1? (50.Rf5 gf5 51.Nd6-+) 50...Kf7 (50...Re7 51.Rg2 Kf7 52.Nf6-+) 51.Nf6 Re7 52.Rg2 (52.Nd5 Re2 53.Rg2 Rce8-+) 52...Rc6 (52...Ne3!? 53.Nd5 Nd5 54.cd5-+) 53.Nd5 Re4 54.Rc2 (54.Nc1 Rce6-+) 54...Rce6 55.Nc1 Be1 56.Kg1 Bh4 (56...Bg3 57.Kg2-+) 57.Kg2 (57.Ba3 Re1 58.Kg2 Nd4-+) 57...Ne3 58.Ne3 Re3 0–1. jaddwarrior (2065) – parham (2080), ChessWorld.net, 2016.

5.Nc3 f5 6.Nf3 Ngf6 7.d4 (7.Ng5 Bg8 8.Be2 a5 9.b5 Nb6) 7...e4 (7...a5 8.b5 Be7 9.Be2 Ne4) 8.Nd2 (8.d5 Bf7 9.Nd4 Ne5) 8...Be7 9.Be2 0-0 (9...a5=) 10.0-0 Qe8 11.f3 Qg6 (11...d5 12.a3=) 12.fe4 (12.Nb5 ef3 13.Bf3 c6+-) 12...Ne4 (12...fe4!? 13.d5 Bh3=) 13.d5+= Nc3 14.Bc3 Bf7 15.Bd3 Be8 (15...Ne5 16.Qe2+=) 16.Qf3 (better 16.Qc2 Qg5 17.Rf4+-) 16...Ne5? (16...Qg5!?+=) 17.Be5+- de5 18.Bf5 Qh6 (better 18...Rf5 19.Qf5 Bb4+-) 19.c5?? (better 19.Be6 Qe6 20.de6 Rf3 21.Nf3+- (21.Rf3?! Bb4 22.Nb3 Bh5+-; 21.gf3?! Bb4 22.Ne4 Bc6+-)) 19...Bg5?? (better 19...Bd7! 20.Bd7 Rf3 21.Rf3 a5+=) 20.Be6+- Bf7 21.Bf7 Kh8 22.Rae1 Rf7 (22...Bf6 23.Be6+-) 23.Qf7 Be3 24.Kh1 Rg8 25.Nc4 Bf4 26.h3 Qg5 27.Rf3 Qh4 (27...b5 28.cb6 cb6 29.Qa7+-) 28.Ref1 (28.Re4 Qd8+-) 28...g5 29.Qf6 Rg7 30.Ne5 Be5 31.Qe5 Qf4 32.Rf4 (32.Rf4 gf4 33.Rf4 h6 34.Rf7 Kh7 35.Qg7) 1–0. Fredek (2065) – Guest312865, Freundschaftspartie, 5m + 0s, 2006.

5.Nc3 f5 6.Nf3 Nh6 7.Be2 Be7 8.0-0 0-0 9.Nd5 a5.

5.c4 c6 6.Be2 Ngf6 7.0-0 Qc7 (7...a5 8.a3=) 8.d3 (8.Ng5 Bf5=) 8...d5= 9.Nbd2 (better is 9.a3!?=) 9...Bb4–/+ 10.cd5 Nd5 (10...cd5?! 11.Ne5 0-0 12.a3=) 11.e4 (11.Ng5 Nf8+=) 11...Nc3 12.Bc3 Bc3 13.Rc1 Qa5 (13...Bb4 14.Qc2–/+) 14.Nb3 Qb4 15.Rb1 Qa3 (15...Qe7 16.Qc2 Bb4 17.d4+=) 16.Qc2+= Ba5 (16...Bb4+=) 17.Ng5 (17.Na5 Qa5 18.Rb7 Qa2 19.Qa2 Ba2 20.Ra1+=) 17...Bb3–/+ 18.ab3 Qb4 19.Qc4 Qc4 (19...Qe7 20.Nf3–/+) 20.bc4 (20.dc4 Bb4 21.Nf3–/+) 20...f6 (better is 20...b6-+) 21.Ne6+= Ke7 (21...Bb6!? 22.Ng7 Kf7+=) 22.Rb7+= g6?? (22...Rhb8 23.Rb8 Rb8 (worse is 23...Nb8 24.Ng7 Bb6 25.Rb1+/-) 24.Ng7 Rb2 25.Nf5 Kd8=) 23.Nc5+- Rhd8 24.Bg4 a6?? (24...Bc7 25.Rc7 (25.Nd7?! Rd7 26.Bd7 Kd7+-; 25.Bd7?! Rd7 26.Nd7 Kd7+-) 25...Kd6 26.Rd7 (26.Bd7?! Kc7 27.Bg4 Kb6+-; 26.Nd7?! Kc7 27.Nc5 Kb6+-) 26...Kc5 27.Rh7 Rd3 28.Rf7+-) 25.Rd7 (better is 25.Nd7 f5 26.Ne5 Ke6 27.Nc6 Rd3 28.ef5 gf5 29.Bf3+-) 25...Rd7 26.Nd7 (26.Bd7 Bd8 27.Bh3 a5+-) 26...Bc3 (26...Bb4 27.Rb1 a5+-) 27.Rb1 a5 (27...Bd4 28.c5 Kd8 29.Nf6 Bc5 30.Nh7+-) 28.Rb7 Kd6 (28...Re8+-) 29.c5 Ke7 30.Nb6 (30.Nb6 Kd8 31.Na8+-) 1–0. Wilke,Hans_Peter (1610) – Chung,Nicholas, Lichtenberger Sommer, 2016.

5.d3 a5 A) 6.b5 Ngf6 (6...Be7 7.Nc3 Ngf6 8.Be2 0-0 9.Nf3) 7.Nf3 Be7 8.Be2 0-0 9.Nc3; B) 6.a3 Ngf6 (6...ab4 7.ab4 Ra1 8.Ba1 Ngf6 9.Nf3) 7.Nf3 d5 8.c5 ab4 9.ab4.

5.d3 Be7 A) 6.a3 Ngf6 (6...a5 7.Nc3 Ngf6 8.Nf3 0-0 9.Be2; 6...Nb6 7.Nf3 Nf6 8.Nc3 0-0 9.Be2) 7.Nf3 0-0 8.Nc3 a5 9.Ng5; B) 6.Nf3 a5 7.b5 Ngf6 8.Be2 0-0 9.Nc3; C) 6.Nc3 a5 (6...Ngf6 7.Nf3 a5 8.b5 0-0 9.Be2) 7.b5 Ngf6 8.Be2 0-0 9.Nf3.

5.d3 f5 6.Nc3 Be7 (6...Nh6 7.Nf3 Be7 8.Be2 0-0 9.0-0) 7.Nf3 Nh6 8.Be2 c6 9.0-0.

5.d3 f5 6.Nd2 Ngf6 (6...Be7 7.Ngf3 Nh6 8.Be2 a5 9.a3; 6...Nh6 7.Ngf3 Be7 8.Be2 0-0 9.0-0) 7.Ngf3 h6 (7...Be7 8.d4= (8.Ng5 Bg8 9.Be2) 8...0-0 9.Ng5; 7...a5 8.ba5 h6 9.Nb3) 8.Be2 (8.d4 c6 9.Be2) 8...g5 (8...a5 9.ba5) 9.h3 (9.d4 e4 10.d5 ef3 11.de6 fe2 12.ed7 Qd7 (worse 12...Nd7 13.Qe2 Rh7 14.Qf3+-) 13.Qe2 Bg7=; 9.0-0+=) 9...Qe7 (9...Bg7 10.d4 e4 11.Nh2=) 10.a3 (10.d4 Bg7=) 10...c5 (10...0-0-0 11.d4=) 11.b5 (11.bc5 Nc5 12.d4 ed4 13.ed4+=) 11...e4 (better 11...Bg7=) 12.de4+- Bg7 13.ef5 Bf5 14.Qb3 b6 (14...0-0-0 15.Rd1+-) 15.Bd3 Bd3 16.Qd3 Rd8 (16...0-0-0 17.Rd1+-) 17.0-0+- 0-0 18.Qc2 d5 19.Rad1 Qe6 20.cd5 Nd5 21.Bg7 Kg7 22.Nc4 N7f6 23.Nfe5 Ne7 24.Rd8 Rd8 25.Rd1 (25.Qa4 Nc8+-) 25...Rd1+- 26.Qd1 Qd5 (26...Ng6 27.Qa1+-) 27.Qe2 (27.Qa4 Nc8+-) 27...Ne4 28.Qd3 (better 28.Qc2!?+-) 28...Qd3+- 29.Nd3 Nc3 30.Nd6 Kf6 31.Nb2 Ke6 32.Nbc4 Kd5 33.f3 Nb5 34.e4 Kd4 35.Nb5 Kc4 36.Na7 Kd3 (36...b5 37.Kf2–/+) 37.Kf2= Kd2 38.Nb5 c4 39.a4 (39.Nd4 c3=) 39...c3=+ 40.Nd4 Kd3 41.Ne2 c2 (41...Ng6 42.g3=+) 42.g3 (better 42.e5=) 42...Kc4?? (42...Nc6 43.h4 g4 44.fg4 Ne5–/+ (44...Ke4?! 45.Nc1=+)) 43.Ke3+- Kb4 (better 43...Kb3!?+-) 44.Kd2+- Ka4 45.Kc2 b5 46.f4 gf4 47.gf4 Ng6 (47...b4 48.f5 Nc6 49.f6+-) 48.e5 Ka3 49.e6 Ne7 50.Nd4 b4 51.Kb1 (51.f5 b3 52.Nb3 Nf5+-) 51...b3 52.f5 Nd5 53.Ne2 (better 53.Nb5 Kb4 54.Nd6+-) 53...b2 (53...h5 54.h4+-) 54.e7!+- Ne7 55.f6 Ng6 56.f7 Nf8 57.h4 Kb3 (57...Nh7 58.h5+-) 58.Ng3 (58.h5 Ka3+-) 58...Kc4 59.Nf5 (59.Kb2 Kd5 60.Nf5 h5+-) 59...h5+- 60.Ng3 (60.Kb2 Kd5 61.Ng7 Kd6 62.Nh5 Ke6+-) 60...Kd5+= 61.Nh5 Ke6 62.Nf4 (62.Ng3 Kf7 63.Kb2 Ng6=) 62...Kf7= 63.Kb2 (63.Ne2 Ng6=) 63…Ng6 ½–½. Holz auf der Heide,Gerhard – Bausch, Leipzig, 1996.

5.d3 f5 6.g3 d5 7.Nc3 d4 8.ed4 ed4 9.Qe2.

5.d3 f5 6.g3 Ngf6 7.Bg2 d5 8.Qb3 (8.a3 c6=+) 8...c6 (8...a5 9.a3–/+) 9.Nd2 (9.Nf3 a5 10.0-0 e4=+) 9...Qc7 (9...a5 10.a3–/+) 10.Rc1 (10.Ngf3 a5 11.Ng5 Bg8=+) 10...Rc8 11.Ngf3 h6 (11...a5 12.Ng5 Bg8 13.a3=+) 12.Qc3 e4 (12...dc4!? 13.dc4 c5=+) 13.Nd4+= Qd6 14.c5 Qe7 15.Ne6 (15.f3 ed3 16.0-0 g6+/-) 15...Qe6= 16.Nb3 Ne5?? ( 16...g6+=) 17.Qe5+- (17…Qe5 18.Be5+-) 1–0. Ostroverkhova,Elena – Gorban,Daria, Championship UKR g–14 semifinal, 2003.

5.d3 Ngf6 6.Nc3 d5 (6...a5 7.b5 Be7 8.Be2 0-0 9.Nf3) 7.Qa4 dc4 8.Nf3 a5 9.ba5.

5.d3 Ngf6 6.Nf3 a5 7.b5 Be7 8.Be2 0-0 9.Nc3.

5.d3 Ngf6 6.Nf3 Be7 7.Qc2 (7.Nc3 0-0+=) 7...0-0 8.a3 (8.Nbd2 c5+=) 8...c6 (8...a5 9.Nbd2+=) 9.Nbd2+= h6 (9...a5 10.Be2+=) 10.h3 (10.Be2 Qc7=) 10...Bf5 (10...a5!?+=) 11.Be2= Bh7 12.0-0 Qc7 13.Rac1 (13.e4 Nh5=) 13...Qb6 ½–½. Francke,Dirk (1950) – Gafke,Manfred (1815), World Senior Teams +65, 2016.

5.d4 c6 6.Nf3= e4 7.Nfd2 (7.d5 Bg4 8.h3 Bh5=) 7...f5= 8.Nc3 Ngf6 9.Be2 h5 (9...Be7 10.0-0=) 10.a3 (10.0-0 h4 11.h3 Be7+=) 10...a5 (10...h4 11.h3+=) 11.b5 Nb6 12.a4 (12.0-0 Be7+=) 12...g5 (12...Be7!?+=) 13.h4 g4 14.g3 (14.0-0 Be7+/-) 14...Rc8 (14...Bg7 15.Ba3+/-) 15.Rc1 (15.0-0 Be7+=) 15...Be7 16.Qb3 c5 17.d5 (17.0-0 0-0+=) 17...Bf7 18.Qd1 (18.Bd1 Nbd7+=) 18...Rh6 (18...Nbd7 19.Ncb1=) 19.Kf1 (19.0-0 Nbd7=) 19...Nbd7= 20.Kg2 b6 21.Ncb1 Kf8 22.Na3 Kg8 23.Nc2 (23.Nb3 Ne8=+) 23...Kf8 24.Nb3 (24.Na3 Qc7=) 24...Be8 (24...Ne5 25.Be5 de5 26.Qe1=+) 25.Nd2 Rc7 (25...Kg7 26.Rf1=) 26.Qe1 Rb7 27.Nf1 (27.Nb3 Ne5=) 27...Rg6 (27...Qc7 28.Rd1=) 28.Bc3 (28.Nd2 Kg8=) 28...Kf7 (28...Ne5 29.Be5 de5 30.Qd2=+) 29.Qd2 (29.Nd2 Qc7=) 29...Ng8 (29...Ne5 30.Be5 de5 31.Qc3=+) 30.Ne1 Ndf6 (better 30...Ne5!?=) 31.Qb2 (31.Kh2 Nd7 32.Ng2 Ne5+=) 31...Qd7 (31...Nd7 32.Nd2+/-) 32.Nc2 (32.Kh2!?+-) 32...Qd8 33.Nd2 Bd7 (33...Qc7 34.Nb3+=) 34.Rhd1 Qc8 35.Rf1 Kg7 36.Ne1 Kh6 (36...Nh6 37.Kg1+/-) 37.Qc2 (37.Kh1 Qf8+-) 37...Qf8 (37...Kh7 38.Kg1+/-) 38.Qb1 (38.Kg1 Kh7+-) 38...Qf7 39.Rd1 (39.Kg1 Bd8+/-) 39...Be8 (39...Nh7 40.Qa1+=) 40.Nb3 (40.Kh2 Nd7+=) 40...Rc7 (40...Nd7 41.Qc2+=) 41.Nc1 (better 41.Kg1!?+/-) 41...Nd7+= 42.Na2 (42.Kh1 Bf6 43.Qb3 Bc3 44.Qc3 Ne5=) 42...Rb7 43.Bd2 (43.Kh1 Bf6+=) 43...Rb8 44.Nc3 (44.Kh1 Bf6=) 44...Bf6 45.Qc2 Ne5 46.Bc1 (46.Kh1 Ne7=+) 46...Nf3 47.Bb2 Bc3 (better 47...Ne7!?=+) 48.Bc3+= Ne5 (48...Ne7 A) 49.Bf3 gf3 (worse 49...ef3 50.Kg1+=) 50.Kh1 Bd7-+; B) 49.Kh1+=) 49.Qb2 Qe7 50.Be5 (50.Kh1!?+/-) 50...Qe5+= 51.Qe5 (51.Qb3 Ne7+=) 51...de5= 52.Nc2 Rd6 53.Na3 Ne7 54.Nb1 Ng6 Black prepares the advance f4 55.Nc3 Bd7 56.Rd2 Re8 57.Rfd1 Rf8 Black plans f4 58.Bf1 f4?? (58...Kg7 59.Re1=) 59.Kh2 (better 59.Ne4 Rdf6 60.Nf6 f3 61.Kg1 Rf6 62.Bd3+-) 59...Bc8? (better 59...Bf5=) 60.Ne4+- Rfd8? (60...Rdd8 61.Ng5+-) 61.Ng5 (better 61.Nd6 Rd6 62.ef4 ef4 63.Re1+-) 61...Rf8 62.e4 (62.ef4 ef4 63.Bg2 Ne7+-) 62...f3 63.Bd3 Rff6 64.Re1 Bd7 65.Re3 Be8 66.Rd1 Nf8 67.Rde1 Nd7 68.Bc2 Bg6 69.Bd1 Nf8 70.Bf3 (better 70.Bb3!?+/-) 70...gf3= 71.Nf3 Nh7? (71...Be4 72.Ne5 Bc2 73.R3e2=) 72.Ne5 (better 72.Kg2+-) 72...Be8?? (better 72...Rf2 73.Kh3 Nf6=) 73.f4 Nf8. Bendega (2045) - Kremen007 (1850), lichess.org, 2021.

5.d4= d5 6.a3 dc4 7.d5 Bf5 =.

5.d4= d5 6.a3 ed4 7.cd5 Bd5 8.Bd4 a5 =.

5.d4= d5 6.a3 ed4 7.cd5 Bd5 8.Bd4 Ngf6 =.

5.d4= d5 6.c5 e4 7.Ne2 Ne7 (7...Ngf6 8.Nf4=) 8.Nf4 Bf5 9.Nc3 Nf6 10.Be2 (10.Bb5 Bd7=) 10...Ng6 11.Ng6 hg6 12.0-0 (12.Rc1 Qd7=) 12...c6 13.b5 ( 13.h3=) 13...Qc7–/+ 14.g3 Be7 15.Qb3 (15.Rb1 Bh3 16.Re1 Bd7=) 15...0-0-0 (15...Ng4 16.Bg4 Bg4 17.a4–/+) 16.b6 (16.Qa4!?=) 16...ab6=+ 17.cb6 Qd7 (17...Qd6 18.a4 Qb4 19.Qb4 Bb4 20.a5=) 18.Qa4 ( 18.Ba3 Rde8 19.Be7 Re7 20.Rac1=) 18...Bd6?? ( 18...Qd6=) 19.Qa8+- Bb8 20.Nb5! (20…Qe8 21.Na7 Kd7 22.Qb7 Ke6 23.Nc6+- (23.Qc6?! Rd6 24.Qb7 Qd7 25.Qd7 Nd7+-)) 1–0. Behrmann,Klaus – DeMastri,John, compuserve, 1997.

5.d4 e4 6.d5+= Bf5 7.Ne2 Ndf6 8.Nd4 Bg6 9.Nc3 Ne7 10.Be2 Qd7 11.0-0 Nf5 12.c5 Be7?? 13.Bb5+- c6 14.dc6 (14.dc6 bc6 15.Bc6 (15.Nc6?! 0-0+-) 15...Nd4 16.Bd7 Nd7 17.ed4 dc5 18.dc5+-) 1–0. marre – oppo, internet, 2010.

5.d4 Ngf6 6.d5 Bf5 7.Nc3 Be7 8.Nge2 0-0 9.Ng3 Bg6 10.h4 h6 11.h5 Bh7 12.Bd3 Bd3 13.Qd3 c6 14.Rd1 Rc8 15.Nf5 Nb6 (15...cd5 16.Nd5 (worse 16.Ne7 Qe7 17.Nd5 Nd5 18.cd5 Qg5-/+) 16...Nd5 17.cd5=) 16.g4 (16.c5!? Nbd5 17.e4+/-) 16...cd5= 17.cd5 (better 17.g5 hg5 18.h6=) 17...Ng4 (17...Nc4 18.Ba1 Nd7= (worse 18...Ng4 19.Rg1 Nf6 20.Rg7 Kh8 21.Rg2+/-)) 18.Rg1+/- Nh2 (18...Nc4 19.Bc1 (worse 19.Rg4 Nb2 20.Rg7 Kh8-/+) 19...e4 20.Qe4+/- (20.Ne4?! Nce5 21.Qe2 Qd7=)) 19.Rg7 Kh8 20.Ke2 (20.e4 a5 21.ba5 Nc4+-) 20...Bf6 (better 20...Bg5+/-) 21.Rdg1?? (better 21.Rg2!? e4 22.Qe4 Rc4+-) 21...Rc3?? (better 21...Bg7 22.Rg7 Nc4=+) 22.Bc3+- (22.Qc3?! Bg7 23.e4 Rg8=+) 22...Nd5? (better 22...Na4 23.R7g3 e4 24.Bf6 Qf6+-) 23.Qd5 Bg7 24.Rg7 (24.Ng7?! Qc7 25.Bd2 Rg8+-) 24...Qh4 (24...Qc7 25.Bd2 Qd7+-) 25.Nh4 (25.Nh4 Rg8 26.Qd6 Ng4 27.Be5 a6 28.Rf7 Nf6 29.Qf6 Rg7 30.Qg7) 1-0. Chess_Network (2570) - frafratte (1865), Rated Bullet tournament, lichess.org, 2016.

5.d4 Ngf6 6.Nf3 e4 7.Nfd2 Be7 8.Be2 0-0 9.0-0 c6 10.Nc3 Bf5 11.g4 Bg6 12.g5 Ne8 13.Nde4 Be4 14.Ne4 d5 15.cd5 cd5 16.Ng3 Bg5 17.Rc1 Ndf6 18.f4 Bh4= 19.Nf5 Ne4 20.Bd3 Qf6?? 21.Qg4+- Bf2 22.Rf2 Nf2 23.Kf2 Nd6? 24.Rc7 Nf5 25.Qf5 Qh6 26.Kg2 g6 27.Qd5 Rad8 28.Qb7 Rde8 29.Qf3 Re6 30.Ra7 Rfe8 31.e4 Qh4 32.d5 Rb6 33.b5 Qe1 34.Qf2 Qb4 35.Qb6 Qb2 36.Qf2 Qb4 37.a4 Re4 38.Be4 Qe4 39.Qf3 Qc2 40.Kg3 Qc1 41.Ra8 Kg7 42.a5 Qg1 43.Kh3 Qb1 44.b6 h5 45.Qc3 f6 46.Qc7 Kh6 47.Rh8# 1–0. Bonetti,Shane – guest580, ICC, 2002.

5.d4 g6 6.d5 Bf5 7.Nd2 Ngf6 8.h3 g5 (8...Nb6 9.g4 Bc8 10.Ngf3=) 9.g4= Bg6 10.Bg2 (10.h4 gh4 11.g5 Nh5=) 10...Bg7 (10...a5 11.a3 h5 12.h4 Ng4 13.Ngf3=+) 11.Ne2 Nb6 (11...a5 12.a3=+) 12.Nc3 (12.f4 gf4 13.ef4 ef4 14.0-0= (worse 14.Nf4 Ng4 15.Qe2 Ne5=+)) 12...Bd3 (12...a5 13.b5=) 13.Qb3 (better 13.c5 Nc4 14.Nc4 Bc4 15.Qa4 Kf8 16.h4 gh4 17.g5+-) 13...Qe7? (better 13...a5 14.Nb5 Bg6+=) 14.e4+- c6 (14...h5 15.Nb5 Nbd5 16.ed5+- (worse 16.Qd3 Nf4 17.Qg3 a5 18.ba5 Ra5+-)) 15.Nd1 (15.dc6 bc6 16.Nd1 Nc4 17.Nc4 Be4 18.Be4 Ne4+-) 15...Be4? (15...cd5 16.Qd3 d4+-) 16.Ne4 cd5 17.Nf6 Bf6 18.cd5 e4 (18...h5 19.Rc1+-) 19.Ne3 Rc8 (19...Bb2 20.Qb2 0-0-0 21.Nf5+-) 20.Nf5 (20.Nf5 Qd8 21.0-0+-) 1–0. Moraes,Maurino Anastacio D – Carrico,Victor, 1st Internacional Xadrez Educa, 2010.

5.Be2 a5!? =.

5.Be2 f5 6.Nf3 Be7 7.Nc3 c6 8.a4 a5 9.b5 Nh6 10.0-0 0-0 11.e4 (11.Qc2 Qc7=) 11...fe4 12.Ne4 d5 13.cd5 cd5 14.Ng3 Bd6 15.Rc1 Nf7 16.Qc2 Nb6 17.Bd1 Rc8 18.Qb1 Nc4 19.Re1 (19.Bb3 Nb2 20.Rc8 Qc8 21.Qb2 g6=) 19...Qd7 (19...e4!? 20.d3 Nb2 21.Qb2 Rc1 22.Qc1 Bb4+=) 20.Bb3= Nb2 21.Qb2 Rc1 22.Rc1 e4 23.Nh5 (23.Nd4 Be5 24.Qc3 Qd6=) 23...Nd8+= 24.Ng5 Rf5 25.Rc8?? (better is 25.h4+= this is the best way to fight back) 25…Rg5-+ (25...Rg5 26.Rd8 Qd8-+) 0–1. Reimer,Karl (1665) – Rahn,Oskar (2050), Kurpfalz op Seniors op, 2000.

5.Qf3 c6=+ 6.d4 Ngf6 (6...d5 7.a3 e4–/+) 7.e4 (7.Nd2 Bg4 8.Qg3 a5=) 7...ed4 (7...Qb6 8.de5 Ne5 9.Qf4 Qb4 10.Bc3-+) 8.Nd2 (8.Bd4 Ne5 9.Qf4 Nc4 10.Bc4 Bc4=+) 8...Qb6 9.Qb3 c5 10.Ngf3 Be7 11.Be2 0-0 12.0-0 Nh5 (12...Ne5 13.Rfd1–/+) 13.Nd4=+ Nf4 (< 13...cd4 14.Bh5 Nf6 15.Bf3+=) 14.Qe3 cd4 (14...Qb4!? 15.Rab1 Bg5 (15...Ne2?! 16.Ne2 Qa4 17.Qg3=+) 16.Ne6 fe6 (16...Ne2 17.Qe2 fe6 18.Nf3 Rf3 19.gf3+=) 17.Bg7 Ne2 18.Qe2 Qd2 19.Qd2 Bd2 20.Bf8 Rf8=+) 15.Qf4= Bf6 16.Rab1 Be5 (16...Qb4 17.Bd4 Qa3 18.Bf6 Nf6 19.Rb7 Qa2 20.Rfb1+= (20.Qd6? Rfd8 21.Qe5 Qd2-+)) 17.Qh4 Rac8 (17...Qb4 18.Bc1 Qa5 19.Rb7=+) 18.a3 f5 19.ef5 ( 19.Rfe1=) 19...Rf5?? (19...Bf5 20.Rbe1 d3–/+) 20.Bg4 Rf6 21.Qf6! Bg4 22.Qg5 Be2 23.Qf5 Bf1 24.Qd7 Rd8 25.Qe6 (25…Kh8 26.Rf1+-) 1–0. Seack,Ingo – Milligan, corr 3GMM–13, 1995.

5.Nf3 a5 6.a3 ab4 7.ab4 Ra1 8.Ba1 Ngf6 9.d4 ed4 (9...e4 10.d5 Bg4 11.h3=+) 10.ed4 (10.Nd4 Be7=) 10...Bg4 11.h3 (11.Be2 d5 12.c5 Be7=) 11...Bf3 (better 11...Qe7!? 12.Qe2 Bf3 13.gf3 Qe2 14.Be2 d5=+) 12.Qf3+= (worse 12.gf3 d5 13.c5 Be7=+) 12...Be7 (12...d5!? 13.c5 Be7+=) 13.Qb7+/- 0-0 14.Be2 Re8 (14...d5 15.c5+/- (worse 15.cd5 Qa8 16.Qa8 Ra8=)) 15.0-0 (15.Nc3 d5 16.c5 Nf8+/-) 15...c5 (15...d5!?+=) 16.b5 cd4 17.Bd4 Nc5 18.Qc6 Qb8 19.Nc3 Rc8 20.Qf3 Ne6 21.Bf6 Bf6 22.Nd5 Bd8 23.Bd3 Nd4?? (23...g6+-) 24.Qe4 g6 25.Qe8 (better 25.Qd4 Qb7 26.Re1+-) 25...Kg7 26.Qd7 (better 26.Qe3 Ne6 27.Rb1+-) 26...Qc7?? (26...Ne6 27.Rd1+-) 27.Qg4 (better 27.Nc7 Rc7 28.Qd8 Ne6 29.Qd6 Rc8+-) 27...Nf5?? (better 27...Qc5+-) 28.Bf5 (better 28.Nc7!? Rc7 29.Bf5 h5 30.Qd4 Bf6+-) 28...Qc5 (28...Qc4 29.Bc8 Qd5+-) 29.Bc8 Qc8 30.Qc8 (30.Qc8 Ba5 31.Ra1+-) 1-0. ClayPigeons (2180) - waddah_ghadanfar (2200), Rated Bullet game, lichess.org, 2021.

5.Nf3 a5 6.a3 Nb6 7.Qc2 (7.c5 Nd7=) 7...ab4 8.ab4 Ra1 9.Ba1 Qa8 10.Bb2 Qa4 11.Qa4 Na4 12.Ba3 Nb6 13.d3 Be7 14.Nc3 f5 15.Nb5 (15.Be2 Nf6=) 15...Kd7 16.Nc3 (16.c5 Na4=) 16...Nh6+= 17.h3 (17.Bb2 Ra8+=) 17...Ra8 18.Nb1 (18.Bc1 Ra1 19.Kd2 e4 20.de4 fe4 21.Ne4 Nc4 22.Kc2 Ra2 23.Kb1 Ra4–/+) 18...Nf7 19.Nfd2 g5 (19...d5 20.g4 Nh6 21.gf5 Nf5 22.Rg1+=) 20.d4 (20.g4 f4+=) 20...ed4 (20...d5 21.c5 Nc4 22.Nc4 dc4 23.de5 Ne5 24.Bb2–/+) 21.ed4 d5 22.c5 Nc4 23.Nc4 dc4 24.Bb2 (24.b5 c6 25.b6 Bd5–/+) 24...Ra2 25.Bc3 b5 26.Be2 Bd5 27.Bf3 (27.Rh2 Nd8–/+) 27...Bf3 28.gf3 c6 29.0-0 Rc2 30.Rd1 Bf6 31.Ba1 (31.Kf1 f4-+) 31...Kc7 (31...Nh8 32.f4-+) 32.Nd2 (better is 32.Kg2–/+) 32...g4 (better is 32...Nh6!?-+) 33.fg4+= Ng5 (33...Bh4 34.f4 fg4 35.hg4+=) 34.Kg2= fg4 (34...c3 35.Nf3+=) 35.hg4 h6 36.Kf1 (better is 36.Nf3!? Ne4 37.Rf1+=) 36...c3–/+ 37.Nb3 Ne4 38.f3 (38.Kg1 Nf2 39.Rc1 Nh3 40.Kf1 Rf2 41.Ke1 c2-+) 38...Ng3 (better is 38...Rf2 39.Ke1 Bh4 40.fe4 Rd2 41.Kf1 Rd1 42.Ke2 Rb1 43.Bc3 Rb3-+) 39.Kg1–/+ Bg5 (39...Ne2 40.Kf1 Ra2 41.Re1-+) 40.Re1+= Ne2 41.Kf1 Ng3 42.Kg1 Ra2 (42...Bd2!? 43.Re7 Kd8–/+) 43.d5= cd5 (43...Ne2 44.Kf1 Ng3 45.Kg1 Ne2 46.Kf1 Ng3 47.Kg1=) 44.Nd4+= Bh4? (44...Bd2 45.Bc3 Be1 46.Nb5 Kb7 47.Be1 Ne2 48.Kf1 Kc6=) 45.Ne6?? (better is 45.Bc3 Kb7 46.Re6+-) 45...Kb7 46.Nf4?? (better is 46.Bc3 Ne2 47.Re2 Re2 48.Nd4 Bf2 49.Kf1 Bd4 50.Bd4+=) 46...d4 47.Bc3 dc3 48.Re6 (48.c6 Kc6 49.Re5 Rd2 50.Rc5 Kb6 51.Nd5 Rd5 52.Rd5 Be7-+) 48...Ra1 49.Kg2 c2 50.Nd3 (50.c6 Kc8 51.Nd3-+) 50...Ra2 (50...Rd1 51.c6 Kc7-+) 51.Kh3 (51.Nc1 Rb2 52.Rb6 Kc7 53.Rh6-+) 51...Nf1 52.Kh4 (52.Nc1 Ra1 53.c6 Kc7 54.Nb3-+) 52...c1Q! 53.Nc1 (53.Nc1 Rh2) 53...Rh2 0–1. Hanscombe,Richard (1755) – Collins,Jonathan (1895), British Chess Championships: Week, 2015.

5.Nf3 a6 6.a4 a5 7.ba5 Ra5 8.d4 Ngf6 9.Bc3 Ra8 10.Nbd2 ed4 11.ed4 d5 12.Bd3 c5 13.0-0+= Ne4? 14.Ne4+- de4 15.Be4 (15.Be4 cd4 16.Nd4+-) 1–0. Poschmann,Hans – Marshall, email CTON, 1996.

5.Nf3 a6 6.d4 ed4 7.Nd4+= Qf6 8.Qc2 Nh6 9.Bd3 Ne5 10.Ne6 Nd3 11.Qd3 Qe6 12.Nd2 Ng4 13.h3 Ne5 14.Qe4 Rb8 15.0-0 Be7 16.f4 Ng6 17.Qe6 fe6 18.Bg7 Rg8 19.Bc3 Nh4 20.Rf2 b5 21.cb5 ab5 22.Kh2 d5 23.g4 Kd7 24.Nf3 Ng6 25.a4 ba4 26.Ra4 Bd6 27.Ne1 Kc6 28.Nc2 Kb5 29.Nd4+- Kc4 30.Rc2 Kd3+/- 31.Ra3 e5 32.Bb2?? Ke4+/- 33.Ne6 h6 34.f5 Rb4 35.fg6 Rb2!–/+ 36.Ra4 Rb4 37.Rb4 Bb4 38.g7 c5 39.h4 c4 40.h5 Be7 41.g5 Bg5 42.Ng5 Kd3 (42...hg5?? 43.h6 Kd3 44.h7 Rg7 45.h8Q+-) 1–0. van Troost – Kuhlmann, 1972.

5.Nf3 Nb6 6.Qc2 Be7 7.d4 ed4 (7...c6 8.Nbd2=) 8.Nd4+= Qd7? (better 8...Nf6+=) 9.Ne6+- Qe6 10.c5 Nd7 (10...dc5 11.bc5 Nd7 12.Bg7+-) 11.Bg7 Bf6 12.Bh8 Bh8 13.Nc3 Qe5 (13...dc5 14.Nb5 0-0-0 15.Rc1+- (15.Na7?! Kb8 16.Bc4 Qb6+-)) 14.Rc1 0-0-0 (14...Qc3 15.Qc3 Bc3 16.Rc3 dc5 17.bc5+-) 15.c6 (better 15.Nb5 dc5 16.bc5+- (16.Na7?! Kb8+-)) 15...Nb6 (15...Qc3 16.Qc3 Bc3 17.Rc3 bc6 18.Rc6 Kb7+-) 16.cb7 (16.Nb5 Kb8 17.cb7 c5+-) 16...Kb8 17.Qh7 Nf6 (17...Bg7 18.Nb5+-) 18.Qf7 Ng4 (18...d5+-) 19.Nb5 Rd7 20.Qg8 Kb7 21.Qg4 Re7 22.Be2 Rg7 (22...Bg7 23.Nd4+-) 23.Qf3 d5 24.Qf8 Rg2 (24...a6 25.Qh8 ab5 26.Bb5 Ka7+-) 25.Rc7 Ka6 26.Ra7 1–0. Rico – Sutterney, internet, 2019.

5.Nf3 Nb6 6.d3 f5 7.Be2 Nf6 8.Nbd2 Be7 9.0-0 0-0 10.a4 e4 (better is 10...a5!?=) 11.de4 fe4 12.Ng5 Bf5 13.a5 Nbd7 14.g4 (14.Nde4 Ne4 15.Qd5 Kh8 16.Ne4 c6+-) 14...h6? (better is 14...Ng4 15.Bg4 Bg5 16.Bf5 Rf5+=) 15.gf5+- hg5 16.Kh1 (16.Ne4 Ne4 17.Qd5 Kh8 18.Qe4 Rb8+-) 16...Ne5 17.Be5 (17.Ne4!? Ne4 18.Qd5 Nf7 19.Qe4+-) 17...de5+= 18.c5 Qd7 19.Nc4 (better is 19.Ne4!? Qd1 A) worse is 20.Rfd1 Ne4 21.Rd7 Bd8–/+ (worse is 21...Nf2 22.Kg2+/-); B) 20.Nf6 gf6 21.Rfd1+-) 19...Qf5= 20.Qc2 Ng4 (20...g4 21.Qc3=) 21.Bg4 (21.f3!? ef3 22.Qf5 Rf5 23.Bf3+/-) 21...Qg4= 22.Qd1 Qf3 23.Qf3 ef3 (worse is 23...Rf3 24.Rad1 Rd8 25.Rd8 Bd8 26.Rd1+/-) 24.Ne5 Bf6 25.Nd7 Ba1 26.Nf8 Kf8 27.Ra1 Rd8 28.h3 Rd2 29.Kg1 Rb2 30.Ra4 Ke7= 31.a6 b6 32.cb6 cb6 33.b5 Rb5 34.Rg4 Kf6 35.h4 Rc5 36.hg5?? Rg5-+ 37.Rg5 Kg5 38.Kh2 Kg4 39.Kg1 g5 40.Kf1 b5 41.Ke1 b4 42.Kd2 Kh3 43.e4 g4 44.e5 g3 45.fg3 Kg3 46.e6–/+ f2 47.e7 f1Q 48.e8Q Qf2 49.Qe2= Qe2 50.Ke2 Kf4 51.Kd3 Ke5 52.Kc4 Kd6 53.Kb4 Kc6 54.Ka5 Kc5 55.Ka4 Kb6 56.Kb4 Ka6 57.Ka4 Kb6 58.Kb4 ½–½. Fournier,Frederic (1810) – ibero2 (1645), Active, 2007.

5.Nf3 c5 6.b5 (6.bc5 e4 7.Nd4 Nc5 8.Ne6 fe6=) 6...a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Qa5 10.Bc3 Qc7 11.Be2 Be7 12.0-0 Ngf6 13.d3 0-0 14.Nbd2 Nb6 15.Qc2 Ra8 16.Ra1 Ra1 17.Ba1 d5? (better is 17...Nfd7!?=) 18.Be5+/- Bd6 19.Bd6 Qd6 20.Qa2 h6 21.Qa7 dc4 22.dc4 Qd2?? (better is 22...Qc7+/-) 23.Nd2+- (23.Nd2 Nbd7 24.Qb7+-) 1–0. Fournier,Frederic (1680) – mikman, Active, 2006.

5.Nf3 c6 6.Nc3 a5 7.b5 g6 =.

5.Nf3 c6 6.Be2 Qc7 7.0-0 h6 (7...a5 8.ba5 Qa5 9.Bc3=) 8.a3 f5 (8...Ngf6 9.Nc3+=) 9.Nc3 (9.d4 Nb6 10.c5 Nc4 11.cd6 Qd6 12.Ne5 Ne5 13.de5 Qd1 14.Rd1 Ne7+/-) 9...Ngf6 10.d4 e4 (10...Nb6!? 11.c5 Nc4 12.cd6 Bd6 13.de5 Be5+=) 11.Nh4 g5 12.Ng6 Rg8 13.Nf8 Rf8 14.Bh5 (14.d5!? Bf7 15.dc6 bc6 16.f4+/-) 14...Bf7 15.Bf7 Rf7 16.c5 (16.Qb3 d5+=) 16...d5 17.b5 (17.f3 g4=) 17...Kf8 (17...Ng4!? 18.g3 h5=+) 18.a4 (18.f4 ef3 19.Qf3 Ng4+/-) 18...Kg7 19.a5 a6 20.bc6 bc6 21.Bc1 Rb8 22.Bd2 Rff8 23.Qa4 Rb7 24.Rab1 Rfb8 25.Rb7= Rb7 26.Rb1 Rb1 27.Nb1 Qb7 28.Nc3 Kg6 29.Qa3 Kg7 30.g3 Kg6 31.Na4 Kg7 32.Nb6+= Nb6 33.ab6 Nd7 34.h3 Kg6 35.Ba5 Nf6 36.Kg2 Ng8 37.Qb3 Ne7 38.Qc2 Ng8 39.g4 Nf6 40.gf5 Kf5 41.f3 h5 42.fe4 Ne4 43.Qb1 g4? 44.Qf1 Kg6 45.hg4+- hg4 46.Qf4 Qd7 47.Qc7?? Qf5= 48.Qd6?? Kg5 49.Qe7 Kg6 50.Qe8 Kg5 51.Qe7 Kg6 52.Qd6?? Kg5 53.Qe7 Kg6 ( 53...Kh6!? 54.Qh4 Kg6–/+) ½–½. Slavisa666 – draskod, Live Game Caissa's Web, 2004.

5.Nf3 c6 6.Be2 Be7 7.0-0 Ngf6 8.Qc2 h6 9.Nc3 0-0 10.d4 Rc8 11.de5 Ne5 12.Ne5 de5 13.a3 Qc7 14.Ne4 White intends c5 14...Nd7 15.c5 f5 16.Bc4 Bd5? (better is 16...Bf7!? 17.Ng3 g6+=) 17.Ng3 e4 18.Bd5 cd5 19.Rad1 f4? (better is 19...g6+-) 20.ef4 Rf4 21.Rd5 Rcf8 (21...Qc6 22.Qb3 Qe6 23.Bg7+-) 22.Ne4 Qc6 23.Qd3 Nf6 (23...R8f5 24.Rd7 Qe4 25.Qe4 Re4 26.Rb7+-) 24.Nf6 (24.Bf6!? Bf6 25.g3 Re4 26.Qe4 Re8+-) 24...Bf6 25.Bc1 Rg4 26.Rd6 (better is 26.f3 Rh4 27.g3 Bd4 28.Rd4 Rd4 29.Qd4+-) 26...Qg2 0–1. Alessandro,Sergio (1690) – Ruffenach,A (1955), World Amateur Open, 2015.

5.Nf3 c6 6.Be2 Be7 7.d4 e4 8.Nfd2 d5 9.b5 (9.0-0 Ngf6=) 9...f5 (9...Ngf6!?= is an interesting idea) 10.Nc3+= Ngf6 11.g3 (11.bc6 bc6 12.Qa4 Qc8=) 11...0-0 12.Qb3 (12.0-0 Qc7=) 12...Qa5 13.0-0 Qb4 (13...Rab8!?=) 14.c5+= White wins space 14...Qa5 15.Qa4 Qc7 (15...Qa4 16.Na4 Bf7 17.Rac1=) 16.bc6 (16.Nb3 a6 17.b6 Qc8=) 16...bc6= 17.Ba3 a5 18.Rab1 Rab8 19.Rb8 Nb8 (19...Rb8 20.Rc1=) 20.Rb1 Bc8 21.Qb3 Nbd7 22.Na4 h5 (22...Qa7 23.Nb6+/-) 23.Bb2 (23.Nb6 Re8+=) 23...Kh7 (23...h4 24.Bf1+=) 24.Bc3 h4 25.Nb6 hg3 (25...Ng4 26.Qa4+/-) 26.fg3 (26.hg3 Re8+/-) 26...g5 27.Ba5 f4 28.ef4 gf4 29.gf4 Nb6= 30.cb6 Qf4 White king safety dropped 31.Nf1= Bd6 32.Be1 Rg8 33.Bg3 Bh3 34.Kh1 Qg5 35.b7+/- Ng4 36.Bg4 Qg4 37.Qe3 Rf8?? Black is ruining his position 38.Nd2+- Bf4 39.Qf4! surprise! 39...Rf4 40.b8Q Qe2?? sad, but how else could Black save the game? 41.Qc7 Kg6+- 42.Qc6 Rf6 43.Qe8 Kg5 44.Rg1 Rf1 45.Qg8 Kh5 46.Qh7 Kg5 47.Bh4 Kf4 48.Bg5 1–0. Melich,Jindrich (2150) – Machalek,Bedrich (2055), Imperia op, 2000.

5.Nf3 Ne7 6.d4 e4 7.d5 Bg4 +=.

5.Nf3 Ne7 6.Ng5 Bf5 7.e4 (7.Qf3!? Nf6 8.Nc3=) 7...Bg6+= 8.d3 Nc6 9.b5 Qg5 10.Bc1 (10.bc6 Nc5 11.h4+-) 10...Qd8 11.bc6 bc6 12.Qa4 c5 13.Nc3 Be7 14.Nd5 0-0 15.Qc6 Nb6 16.Bd2 (16.Qc7!? Nd5 17.Qd8 Bd8 18.ed5 Ba5 19.Kd1+=) 16...Nd5–/+ 17.cd5 f5 18.f3 Be8 19.Qa6 Bg5 20.h4 (20.Bg5!? Qg5 21.Rb1–/+) 20...Bh4-+ 21.Kd1 Bg5 22.Qa5 Bd2 23.Kd2 Qg5 24.Kc3?! (24.Kd1-+) 24...Qe3 25.Rb1 (25.Kc2 Rb8 26.a3 Qf2 27.Be2 Qe2 28.Kc1 Qb2 29.Kd1 Qa1 30.Ke2 Qh1 31.Qb6 Qg2 32.Kd1 Rb6 33.Kc1 Rb2 34.f4 Qd2) 25...Qd4 (better is 25...fe4 26.Qa6-+) 26.Kd2 fe4 27.fe4 c4 28.Rh3 (28.Be2 Rf2 29.Rbe1 Rb8-+) 28…c3! (28...c3 29.Qc3 Rf2 30.Be2 Re2 31.Ke2 Qc3-+) 0–1. Fett,Helmut (1795) – Maettig,Stefan (2010), Nuremberg–ch op, 2006.

5.Nf3 Ne7 6.Ng5 Bf5=+ 7.Qf3 h6 ( 7...Nf6!?=+) 8.Nf7+/- Kf7 9.e4 g6 10.Bd3 Bg7 11.ef5 gf5 12.Bf5 (12.Qb7?! a5=) 12...Nf5 13.Qf5 Nf6 14.Nc3 Rf8 15.0-0 Kg8 16.Qe6 Kh8 17.Rae1 Nh7 18.Nd5 Re8 (18...Ng5 19.Qg6 c6 20.Ne3+/-) 19.Qg6 c6 20.Ne3 Qd7 21.Nf5 Re6 22.Qg7 Qg7 23.Ng7 Kg7 24.f4 Rae8 25.fe5 de5 26.Rf5 Kg6 27.Rfe5 Re5 28.Re5 Re5 29.Be5 Kf5 30.Bg7 h5 31.Kf2 Ng5 32.Ke3 Ne6 33.Bh6 a6 34.d4 Nd8 (34...b5 35.d5 Nd8 36.cb5 cb5 37.Bf4+-) 35.Kd3 (35.a4 b6+-) 35...Nf7 36.Bf8 Ke6 (36...b5 37.c5+-) 37.Ke4 Ng5 38.Kf4 Nf7 39.g4 hg4 40.Kg4 Kf6 (40...b5 41.cb5 ab5 42.h4+-) 41.h4 Nd8 (41...b5 42.c5+-) 42.Bd6 Nf7 43.Be5 Kg6 (43...Ke6 44.a4+-) 44.h5 Kh6 45.Bf4 Kg7 46.Kf5 Nd8 (46...Kf8 47.d5+-) 47.h6 Kh7 48.d5 cd5 49.cd5 b5 50.Kf6 Kg8 (50...Nb7 51.Ke7 Kg6+-) 51.Kg6 (51...Kf8 52.h7+-) 1–0. Grund,Karl – Zimmermann, corr ICCF EU–H–GT–12, 1965.

5.Nf3 f6 6.Nc3 Ne7 7.d4 Ng6 8.h4 Nb6 9.d5 Bf7 10.Be2 Qd7 11.a4 c6 12.a5+/- Nc8 13.a6 Be7 14.h5 Nf8 15.ab7 Qb7 16.Ba3 Nd7 17.Nh4 Bd8 18.Bf3 c5+/- 19.bc5 Ba5 20.Qd2 Qb3+= 21.0-0?? Bc3 22.Qd3 Nc5?? 23.Bc5+/- Qb7 24.Qc3+- dc5 25.d6?? e4= 26.d7 Kd7 27.Bg4 Be6 28.Rfd1 Ke7 29.Be6 Ke6 30.Rd5 Nd6 31.Rc5 Rhc8= 32.Rc8 Rc8 33.c5 Nb5?? 34.Qc4 Ke7 35.Nf5 Kf8 36.Nd4 a6? 37.c6 Qb6 38.Rc1 Nd4+/- 39.ed4 a5 40.d5 f5?? 41.d6+- a4 42.Qe6 Re8 43.Qf5 Kg8 44.c7 a3 45.c8Q (45.c8Q Qd8 46.Qfe6 Kf8 47.Qd8 Rd8 48.Rc7 Rd7 49.Rc8 Rd8 50.Rd8#) 1–0. Jamieson,Ian (2025) – Goman,Colin (1915), 31st Guernsey Open, Cobo Bay GCI (7), 2005.

5.Nf3 f6 6.d4 e4 7.Nfd2 f5 8.d5 Bf7 9.g4 Bg6 10.gf5 Bf5 11.Nc3 Ngf6 12.Qc2 Qe7 13.f3 g6 14.fe4 Ng4?? 15.Nd1+- Ndf6 16.h3 Ne3 17.Ne3 Ne4 18.Nf5 gf5 19.Bh8 Nc3 20.Ne4 Ne4 21.0-0-0 0-0-0 22.Bb2 Bh6 23.Kb1 Rf8 24.Bd3 Ng3 25.Rhe1 (25.Rhe1 Be3 26.Bd4+-) 1–0. Sivertsev – Soucek,Miroslav, Pardubice op2, 1994.

5.Nf3 f6 6.d4 g6 7.Be2 Bg7 8.Nbd2 Ne7 9.0-0 0-0 10.e4 Rc8 11.a4 Kh8 12.c5 Bg8 13.Bc4 Nb8 14.Bg8+/- Rg8 15.Qb3 b6 16.Rad1 Qe8 17.de5 de5 18.Nb1 bc5+= 19.bc5 Qc6 20.Nc3 Na6 21.Ba3 Rgd8 22.Nd5 Ng8 23.Qb5+/- Nb8 24.Nd2 Qe6 25.Qc4 Nc6 26.Nb3 Nge7 27.Qa6+= Qf7 28.Rd3 f5= 29.f3 Nd5 30.ed5 Nb8 31.Qb7+/- Kg8 32.c6 Bf8 33.Nc5 Bc5 34.Bc5+- Qf6 35.Rfd1 Kf7?? 36.d6 (36.d6 Nc6 37.dc7 (37.Qc6 cd6 38.Qb7 Qe7 39.Qe7 Ke7 40.Ba7 Rc2+-) 37...Rd3 38.Rd3+-) 1–0. Lippmann,Ulrich (2075) – Diskin,Semen (2010), 39sen.LEM N'sachsen, 2005.

5.Nf3 Qf6 6.d4 e4 7.Nfd2 Bf5 8.Nc3 Qg6 9.Nb5 0-0-0 (9...Kd8!?+=) 10.Na7+/- Kb8 11.Nb5 h5 (11...c6!? 12.Nc3 Ngf6+-) 12.Qa4 Nb6? (12...c6 13.Qa7 Kc8 14.Qa8 Nb8 15.Nc3+-) 13.Qa7 Kc8 14.c5 dc5 (14...Nd5 15.Qa8 Kd7 16.Qb7+-) 15.dc5 Rd2 (15...Nd5 16.Nc4 f6+-) 16.Kd2 Nf6 17.cb6 c6 (17...Nd5 18.a3 Qb6+-) 18.Qa8 (18…Kd7 19.Qb7 Kd8 20.Qc7 Ke8 21.b7+-) 1–0. orane (1995) – coffeehouse, Live Game Caissa's Web, 2004.

5.Nf3 Ngf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 Nbd7).

5.Nf3 Bg4 6.Be2 Ngf6 7.0-0 Be7 8.d4 ed4 9.ed4 d5 10.c5 0-0 11.Nc3 c6 12.b5 Ne4 13.Ne4 de4 14.Nd2 Bf5 15.bc6 bc6 16.Qa4 Nc5!–/+ 17.Qc2 Ne6 18.Ne4 Nd4 19.Bd4 Qd4 20.Rfd1?? Qe4 21.Bd3=+ Qe5 22.Bf5 g6 23.Be4 Rac8 24.Rab1 (< 24.Bc6 Qe6 25.Re1 Qf6–/+ (25...Qc6?! 26.Qc6 Rc6 27.Re7=)) ½–½. Raue,Thorsten (1840) – Willermann,Norbert (1760), Muensterland Verbandsklasse–B, 2004.

5.Nf3 h6 6.a3 Ngf6 7.h3 Be7 8.Be2 c6 9.0-0 Nh7 10.d4+= e4 11.Nfd2 d5 12.cd5 cd5 13.Nc3 0-0 14.Nb3 Bd6 15.Nb5 Bb8 16.Nc5 Qg5 17.Ne6+= fe6 18.Rc1 a6 19.Nc7 Bc7 20.Rc7 Nhf6 21.Rb7+- Rfc8 22.Qa4 Nb8 23.b5 a5 24.b6 Rd8?! 25.Rc1 Nbd7 26.Rcc7 Rab8 27.Rd7 Nd7 28.Rd7 Rb6 29.Rd8 Qd8 30.Bc3 Rb1+/- 31.Bf1 Qb6 32.Qa5+= Qd6? 33.Bb4+- Rf1? 34.Kf1 Qh2 35.Qa6 Qh1 36.Ke2 Qg2 37.Qe6 Kh8 38.Qg4 Qh1 39.Bf8 g5 40.Bh6 Qc1 41.Bg5 Qc4 42.Ke1 Qc3 43.Kf1 Qa3 44.Bf6 (44.Bf6 Kh7 45.Qg7#) 1–0. Gross,W – Jakub, tt Flughafen–Dt.Bank, 1993.

5.Nf3 h6 6.Nc3 Ngf6 7.Be2 Be7 8.d4 c6 9.e4 ed4 10.Nd4 Ne5 11.Ne6 fe6 12.0-0 Qb6 13.Qb3 Kf7 (13...Nf7!?+=) 14.c5!+/- dc5 15.Na4 Qc7 16.Nc5 (16.Qg3!? Nfd7 17.Bh5 Kg8 18.f4 cb4 19.Be5 Ne5 20.fe5+-) 16...Bc5+/- 17.bc5 Ne4?? (17...Ned7 18.Qf3 Rhd8+/- (18...Nc5? 19.Bf6 gf6 20.Qh5 Kg7 21.Qc5+-)) 18.Qe3+- Nd7 19.Qe4 Nc5 (19...Nf6 20.Bf6 Kf6+-) 20.Qd4 (20.Qd4 Rhg8 21.Qc5+-) 1–0. Krebbers,Wilfried (2155) – Rieger,Mario (1755), Goch op, 2006.

5.Nf3 h6 6.Be2 Ngf6 7.0-0 Rc8 8.c5 dc5=+ 9.bc5 e4 10.Nd4 Nc5 11.Ne6 Ne6 12.Bg4 Ng4=+ 13.Qg4 Qd5 14.Rd1? h5-+ 15.Qe2 Rd8 16.Nc3 Qd3 17.Rab1 b6 18.Qd3 ed3 19.Rdc1 Nc5 20.Nb5 c6 21.Na7 Kd7 22.Bd4 Ra8 23.Rb6 Ra7 24.Rb8?? Na6 25.Rf8= Rf8 26.Ba7 Nb4 27.Bc5 Na2 28.Bf8 Nc1 29.Bg7 Nb3 30.Bc3 c5 31.h3 c4 32.g4 hg4 33.hg4 Nc5 34.f4 Ne4= 35.Kf1 Nc3 36.dc3 Ke6 37.e4 Kf6 38.Ke1 Ke6 39.Kd2 Kf6 40.Ke3 Ke6 41.g5 f6 42.g6 Ke7+/- 43.e5 f5 44.Kd2 Ke6 ½–½. Mear,D – Wariyar,R, Sell, 1996.

5.Nf3 h6 6.Be2 Ngf6 7.Nc3 Be7 8.Qc2 0-0 (8...Nb6 9.c5 Nc4 10.Bc4 Bc4 11.d3=+) 9.d4 ed4 (9...c6 10.0-0=) 10.Nd4+= Re8 (10...c5 11.bc5 Nc5 12.0-0+=) 11.Ne6 fe6 12.0-0 c6 13.a3 d5 14.e4 (14.f4 a5 15.c5 b6+=) 14...d4= 15.Na4 White prepares c5 15...e5 (15...c5 16.f4 e5 17.Rad1+=) 16.c5+- Kh8 17.f4 b5 18.cb6 ab6 19.Qc6 Rc8 20.Qb5 Rc2? (better 20...Bd6+=) 21.fe5+- Ne5 22.Rad1 (22.Qe5?! Re2 23.Qd4 b5+-) 22...d3 (22...Rb2 23.Nb2 Bd6 24.Rd4+-) 23.Bd3 (23.Qe5 Bc5 (worse 23...Re2 24.Qb5+-) 24.bc5 Re5 25.Rd3 Qe7 26.Be5 Re2=+) 23...Nd3 (23...Rb2 24.Nb2 Qd4 25.Kh1 Rf8+- (25...Qb2?? 26.Rf6 Bf6 27.Qe8 Kh7 28.Qa4+-)) 24.Rd3 (24.Qd3?! Qd3 25.Rd3 Ne4+-) 24...Qc7 (24...Qb8+-) 25.Bf6 Bf6 (25...Qc6 26.Qc6 Rc6 27.Be7 Re7+-) 26.Qe8 Kh7 27.Rf6! Rc1 (27...gf6 28.Qe6 Double attack (28.Qe6 Decoy)) 28.Rf1 Rf1 29.Kf1 Qc1 30.Ke2 Qc2 31.Rd2 Qc4 32.Kf2 b5 33.Rd8 Qc2 (33...Qa2 34.Kf3 Qb3 35.Kg4 Qc4 36.Qh8 Kg6 37.Rd6 Kf7 38.Rd7 Ke6 39.Qe8 Kf6 40.Qe7 Kg6 41.Qg7) 34.Kf3 Qa4 (34...Qc7 35.Qg8 Kg6 36.Qe6 Kh7 37.Qf5 g6 38.Rd7 Qd7 39.Qd7 Kg8 40.Nc5 g5 41.Ne6 g4 42.Kf4 g3 43.Qg7) 35.Qg8 Kg6 36.Qe6 Kh7 (36...Kg5 37.Rd5 Kh4 38.g3) 37.Qf5 g6 38.Qf7 1–0. Pierre – Tybling, internet, 2019.

5.Nf3 Nh6 6.Nc3 c6 7.d4 Be7 8.Bd3 Bg4 9.h3 Bf3 10.Qf3 (10.gf3?! ed4 11.ed4 0-0=) 10...0-0 11.b5 f5 12.bc6 bc6 13.Qc6 e4 14.Be2 Rc8 15.Qa6 g5 (15...Qb6 16.Qb5+/-) 16.0-0 (16.Qa7 Nb6 17.Qa6 Qc7+-) 16...Nf6 17.Rab1 (17.Qa7 Ra8 18.Qb7 Rb8+=) 17...f4 18.Qb5 Nf7 19.Nd5 h6 20.Bc3 Nd5 21.Qd5 f3 22.gf3 ef3 23.Bf3 Rc5 (23...a6+-) 24.dc5 dc5 (24...Bf6 25.Bf6 Qf6 26.cd6 Qd6+-) 25.Qf5 Bf6 26.Qg6 Bg7 (26...Kh8 27.Be4 Bc3 28.Qh7) 27.Qg7 1–0. Fournier,Frederic (1785) – Nosirulmaszod, Active (7+2), 2007.

6.Nc3 a5 7.b5 =+.

6.Nc3 c6 7.Nf3 Be7 8.h3 h6 (8...Nb6 9.d3=+ (9.c5 dc5 10.bc5 Nbd7 11.Na4 e4 12.Ng5) 9...0-0 (9...a5 10.b5 0-0 11.Be2 h6 12.0-0) 10.Be2 a5 11.b5 h6 12.0-0; 8...a5 9.b5 h6 10.Be2 0-0 11.0-0 Qc7 12.d4) 9.d4= (9.Be2 Nb6 10.d3 0-0 11.0-0 a5 12.b5) 9...0-0 (9...Qb6 10.a3 0-0 11.Be2 a5 12.c5) 10.Bd3 Qb6 (10...a5 11.b5 cb5 12.cb5) 11.a3 a5 (11...Qc7 12.d5) 12.Na4 White prepares c5 (12.c5=) 12...Qc7 13.de5 (13.0-0 e4 14.Be4 Ne4 15.Qe4 ab4 16.ab4 d5 17.cd5 cd5=) 13...de5 14.c5 ab4 15.ab4 Nd5 16.Qd2 b5 17.cb6 N7b6 (17...N5b6 18.Nb6 Qb6 19.0-0 Bb4 20.Qc2=+) 18.Nc5= Bc5 (18...Nb4 19.Ra8 Ra8 20.Be5 Nd3 21.Qd3=) 19.bc5 Ra1 20.Ba1 Nd7 21.0-0 f6 22.Bb1 (22.Rc1=+) 22...Ne7 (22...Ra8 23.Bb2=+) 23.Rd1 (23.Qd6 Qd6 24.cd6 Nd5=) 23...Ra8 (23...Nc5 24.Qc2 Bb3 25.Qh7 Kf7 26.Rc1=+) 24.Bb2 (24.Qd6 Qd6 25.cd6 A) 25...Ra1? 26.de7 Bf7 27.Bh7 (27.Rd7?! Rb1 28.Kh2 Be8=) 27...Kh7 28.Ra1+-; B) 25...Nd5=) 24...Nf8 (24...Nc5 25.Qc2 Qb6 26.Qh7 Kf8 27.Qh8 Bg8 28.Bc3-+) 25.Qc3 (25.Qd6 Qb7=) 25...Rd8 (25...Ra5 26.Qc2=) 26.Rc1 (26.Rd8 Qd8 27.Bd3 Nd5=) 26...Nd5 27.Qa3 (27.Qc2 Qe7=) 27...Qb7=+ 28.Ba1 Ra8 29.Qb2 Qc7 (29...Qb2 30.Bb2 Nd7 31.Nd2=+) 30.Bd3= Ra4 31.Qc2 (31.Nd2 Nd7=) 31...Qa7=+ 32.Bc3? (better 32.Qb1!?=+) 32...Nc3-+ 33.Qc3 e4 34.Be4 Re4 35.Nd4 Bd7 36.Qb3 (better 36.Ra1 Qb8 37.Ra6-+) 36...Be6 37.Qb6?? (better 37.Qc3!?=) 37...Qd7 (37...Qa3!? 38.Rb1-+) 38.Nc6–/+ Bh3! 39.gh3? (better 39.Nd4 Bg2! 40.Kg2-+) 39...Qh3 40.Qb3 (40.Ne7 Re7 41.Qb3 Kh8 42.Rc3-+) 40...Kh8 41.f4 (41.Rc4 Qg4 42.Kf1 Rc4-+) 41...Qg3 (better 41...Re3 42.Nd4-+) 42.Kf1 Qf3 43.Kg1 Re3 44.Qb1 (44.Qc2 Qf4 45.Qg2-+) 44...Qg3 45.Kf1 (45.Kh1 Re2 46.Qh7 Kh7 47.f5 Qg2) 45...Rf3 46.Ke2 Qg2 47.Ke1 Rf1 0–1. De Visser,Arno – Allan,J, Guernsey, 1983.

6.Nc3 Be7 7.Nf3 c6 (7...a5 8.a3=+) 8.a4 (8.d4 Qb6 9.a3 0-0=) 8...d5=+ 9.cd5 (9.Na2 dc4 10.Be5 b5=+) 9...cd5 10.b5 Rc8 11.Be2 Bd6 (11...Bg4 12.d3=+) 12.0-0 Ne4 (12...0-0 13.Rfc1=+) 13.Rfc1 0-0 14.Qd1 (14.a5 Nc3 15.Bc3 e4=+) 14...Ng5 (14...Qf6 15.d3 Nc3 16.Bc3=) 15.Ng5 Qg5 16.Ba3 Ba3 17.Ra3 Qe7 18.Raa1 f5 19.d4= e4 20.Na2 Nb6 21.Rc8 Rc8 22.a5 Nc4 23.Bc4 Rc4 24.Rc1 Qa3–/+ 25.Qd2?? Bd7 26.Rc4= dc4 27.d5 Bb5-+ 28.g3 Qd3 29.Qb4 c3! 30.h4 Qf1 31.Kh2 Qf2 32.Kh1 Be2 (33.Qe4 fe4 34.Nc3 Bf3) 0–1. Krickemeyer,Horst – Gebert,Herbert, 7sen.WttgEM/Ellwangen, 1995.

6.d3 c5 7.b5 (7.bc5 Nc5 8.Nc3 Qa5 9.Nf3) 7...d5 8.Nd2 (8.Nf3 d4 9.Nbd2) 8...d4 (8...Bd6 9.Ngf3) 9.Ngf3 (9.Be2=+) 9...Be7 10.g3 (10.Be2 0-0=+) 10...0-0 (10...de3 11.fe3 Ng4 12.Ke2–/+) 11.Bg2=+ Rb8 (11...a6 12.ba6 Ra6 13.0-0=+) 12.0-0= Ng4 13.Rae1 Bf6 (13...Re8 14.Ne4=) 14.Ne4 Be7 15.Ned2 Bf5 (15...Re8 16.h3 Ngf6 17.g4=) 16.ed4 cd4 (16...ed4!? 17.Re2 Re8=) 17.h3+- Nh6 (17...Nc5 18.Ne4 Be4 19.de4+-) 18.Ne5 Ne5 19.Re5 Bf6 20.Re2 Qd7 (20...a6 21.g4 Bd7 22.f4+-) 21.Kh2 (21.g4 Be6+-) 21...Rfc8 (21...a6 22.a4+-) 22.Qb3 Be6 23.Rfe1 Nf5 24.Nf3 h5 (24...Re8 25.Bc1+-) 25.Bc1 Re8 26.Bf4 Rbc8 27.Ng5 Bg5 28.Bg5 Nd6 29.Qd1 g6 (29...a6 30.a4+-) 30.Bf6 Rc5? (30...Nf5 31.Re5+-) 31.Qd2 (31.Bd4 Rcc8 32.Ba7 h4+-) 31...Nf5 32.Be4 (32.g4!? hg4 33.hg4 Qd6 34.Kg1 Ng7+-) 32...Kh7 (32...h4 33.g4 (33.gh4?! Qd6 34.Kg1 Bc4+-) 33...Qd6 34.Kg2+-) 33.Qf4 Nh6 (33...Rec8 34.b6! ab6 35.a4+-) 34.Bg5 (34.Bd4 Rcc8 35.Be3 Nf5 36.Ba7 Nd6+-) 34...Rg5? (34...Nf5+-) 35.Qg5 Bh3 (35...Kg7+-) 36.Bg6! (36.Bg6 fg6 37.Re8+-) 1–0. Holz auf der Heide,Gerhard – Schuster, Delitzsch, 2000.

6.d3 d5 7.a3=+ (7.b5 Bb4 8.Nd2 dc4 9.Ngf3) 7...a5 8.b5 Bd6 9.Nf3.

6.Nf3 Be7 7.Be2 0-0 8.Ng5 h6 (8...d5 9.Nc3 c6 10.a3=) 9.Ne6 fe6 10.0-0 c6 (10...d5 11.a3=) 11.d4 (11.a3 a5=) 11...ed4= 12.ed4 d5 13.c5 b6 14.Nd2 Qc7 15.Bd3 (15.Rfe1+=) 15...b5? (better is 15...Ng4!? 16.g3 bc5 17.bc5 Rae8+=) 16.Rae1+/- Ng4 17.g3 Ndf6? (better is 17...a5+/-) 18.f3+- Nh2 19.Kh2 Nh5 (19...Qd7 20.Nb3+-) 20.f4 a5 21.Qd1 (21.ba5 Ra5 22.Bc3 Ra3+-) 21...Nf6 (21...Rf4 22.gf4 (22.Rf4?! Nf4 23.Bb1 ab4+-; 22.Qh5?! Rh4 23.Qh4 Bh4=) 22...Nf4 23.Bb1 Ne2 24.Kh1 Ng3 25.Kg2 Nf1 26.Rf1+- (26.Kf1?! Qh2 27.Nf3 Rf8=)) 22.Qe2 Qd7 (22...Bd8 23.Qe6 Kh8 24.Nf3+-) 23.Qe6 Qe6 24.Re6 Ng4 (24...Kf7 25.Rc6 ab4 26.Ra1+-) 25.Kh3 Kf7 26.Rc6 (26.Kg4?! Ke6 27.Re1 Kd7+-) 26...Nf6 27.Rc7 ab4 28.Re1 Rfe8 (28...Ng8 29.Bh7 Rfe8 30.Nf3+-) 29.Bb5 Rh8 (29...Ng8+-) 30.Ree7 (30.Ree7 Kg6 31.Rg7 Kf5 32.Bd3 Ne4 33.Rcf7 Ke6 34.f5#) 1–0. aspasio – calex, ItsYourTurn.com, 2002.

6.a3 Ngf6 7.Nf3 h6 8.Be2 Be7 9.0-0 0-0 10.Qc2 Re8 11.Rfd1 Bf8 (11...Nb6 12.d4 ab4 13.ab4 Ra1 14.Ba1 ed4 15.Rd4=) 12.d4+= Qe7 (12...e4 13.Nd2 ab4 14.ab4 Ra1 15.Ra1+=) 13.d5 Bg4 14.h3 Bf3 15.Bf3 g6 16.Ne4 (16.e4 Bg7+/-) 16...Ne4+= 17.Be4 f5 18.Bd3 Bg7 (18...e4 19.Be2=) 19.Be2 (19.e4 Nf6+=) 19...Nf6 20.Rac1 b6 21.c5 bc5 22.bc5 Ne4 23.c6 Qh4 24.Bd3 Nc5 25.Bc4 Rab8 26.Ba1 Rf8 Black plans f4 27.Rb1 Rb1 28.Rb1 f4 29.ef4 (worse 29.Qg6 fe3 30.f4 Qf4-+) 29...Qf4 30.f3 Qe3 31.Kh1 Qg5 (31...e4 32.Bg7 Kg7 33.Be2=+) 32.Bc3+= a4 (32...e4 33.Ba5 Be5 34.Qf2=) 33.Bd2 (33.Bb4 e4 34.Bc5 dc5 35.Qe4 Be5+/-) 33...Qf5 34.Qc1 (better 34.Qf5 gf5 35.Be3+-) 34...e4= 35.Be2?? (better 35.fe4 Qe4 36.Be3=+) 35...Nb3-+ (35...Qd5?? 36.Bc4 Qf7 37.Bf7 Kf7 38.fe4+-) 36.Qd1?! (36.Qc2 ef3 37.Qf5 gf5 38.Bf3 Nd2 39.Rb4-+) 36...Nd2 (better 36...ef3 37.Bf3 Nd2 38.Rc1-+) 37.Qd2 ef3 38.Bf3?? (38.Rf1 Bc3! 39.Qc3 fe2 40.Rf5 Rf5 41.Kh2-+) 38…Qb1 (38...Qb1 39.Qd1 Qd1 40.Bd1 Rf1 41.Kh2 Be5 42.g3 Rd1-+) 0-1. dannysmet (2020) - Drroodie (2005), Rated Blitz game, lichess.org, 2021.

6.b5 Nb6 7.Qb3 a4 8.Qc2 Nf6 9.Nf3 a3.

6.b5 f5 7.d4 Ngf6 8.d5 Bf7 9.Nf3 Ne4 10.Be2 Nc3 11.Bc3 Be7 12.0-0 Bf6 13.a4 b6 14.Qc2 Bg6 15.Qb2 (15.Nd2 Nc5=) 15...0-0 16.Nd2 Nc5 17.f3 Bg5 (17...Re8 18.Kf2=) 18.f4 ef4 19.ef4 Bf6 20.Nb3 Nb3 (20...Bc3 21.Qc3 Ne4 22.Qh3=) 21.Qb3 Qe7 22.Rae1?? (better 22.Bf6 Qf6 23.Qd3=) 22...Qe3-+ 23.Kh1 Qc3 24.Qc3 Bc3 25.Rc1 Bf6 (25...Rae8 26.Bd3 Bb4 27.Bc2-+) 26.Bd3 0-1. Butterbrot (2105) - oc3arfoc (2275), Rated Blitz game, lichess.org, 2016.

6.d4 ed4 7.Qd4 Qb6 (7...Ngf6 8.Nf3 c5 9.bc5 dc5 10.Qf4 Qb6 11.Nb5 Rc8 12.a4 a6=) 8.a3= Ngf6 9.Qf4 Ne5 10.Nf3 Nh5 11.Qh4 Nf3 12.gf3 Nf6=.

6.d4 Ngf6 7.d5 cd5 (7...Bg4 8.Be2 Be2 9.Nge2 Nb6 10.Qd3 Rc8 11.Rc1 cd5 12.Nd5 Nbd5=) 8.cd5 Bf5 9.Rc1 Be7 10.Nf3 a5 11.Qb3 ab4 12.Qb4 Qb6=.

6.d4 Ngf6 7.Nf3 h6 (7...e4 8.d5 Bg4 9.h3= Bh5 10.g4 ef3 11.gh5 Ne5 12.Rb1 Rb8=) 8.Bd3 (8.Be2 Bg4 9.h3 Bf3 10.Bf3 e4 11.Be2 d5 12.Qb3 Qe7+=) 8...Be7 (8...e4 9.d5 cd5 10.cd5 Nd5 11.Be4 Nb4 12.0-0 Nc5=) 9.Qc2 (9.0-0 e4 10.d5 ed3 11.de6 Ne5 12.ef7 Kf7=) 9...Rc8 (9...e4 10.Ne4 Ne4 11.Be4= d5 12.cd5 cd5=) 10.c5 (10.0-0 Bg4+= 11.Be2 Bf3 12.Bf3 d5+=) 10...0-0 (10...ed4 11.Nd4 0-0 12.Ne6 fe6=) 11.0-0 (11.de5 de5 12.Rd1 Qc7=) 11...Bg4 (11...dc5 12.dc5 b6 13.cb6 ab6 14.a3=) 12.Ne4 (12.de5!? de5 13.Rfd1=) 12...Ne4=+ 13.Be4 f5 14.cd6 Bd6 15.Qb3 (better 15.de5!? Bc7 16.e6 fe4 17.ed7 Qd7 18.Qe4 Bf3 19.gf3=) 15...Kh8 16.Bc2 Bf3 17.gf3 ed4 (17...Qh4!?–/+) 18.Bd4=+ Ne5 19.Be5 Be5 20.Rad1 (20.Rac1 Qg5 21.Kh1 Qh5-+) 20...Qg5=+ 21.Kh1 Qh5 22.f4 Qf3 23.Kg1 Rf6 24.Rfe1 (24.Bf5 Rf5 25.Qe6 Rcf8-+) 24...Rg6 (better 24...Qh3!? 25.Bf5 Qf5 26.Qd3 Qg4 27.Kh1-+) 25.Kf1 Rg2 26.Re2 Rh2 27.Ke1 Rh1 (27...Bf4 28.Bd3 Re8 29.Qf7-+) 28.Kd2 Rd8 29.Bd3 Bf6 (29...Rd1 30.Kd1 Bf4 31.Kc2-+) 30.Rh1 Qh1 31.Kc2 Rd5 32.e4 fe4 33.Re4 Kg8 (33...Qh5 34.Qa3-+) 34.b5 (34.Re8 Kf7 35.Rb8 Qg2 36.Rb7 Ke8–/+) 34...Kf8=+ 35.bc6 Rc5 36.Kd2 Qf3?? (better 36...Bc3 37.Ke2 Qh5 (37...Rc6 38.Qa3 Bb4 39.Qb4 Kf7 40.Qe7 Kg8 41.Qe8 Kh7 42.Re7 Qe4 43.Be4 Rg6 44.Bg6) 38.Ke3 Rc6 (38...bc6?? 39.Qb8 Kf7 40.Qe8 Kf6 41.Re6) 39.Qb7 Qc5 40.Ke2 Rc7=+) 37.cb7+- Qf2 38.Be2 Bc3 39.Qc3 Rd5 40.Kc2 Rd8 41.Qb4 (41.Qb4 Kg8 42.b8Q Rb8 43.Qb8 Kh7 44.Qc8 Qg3 45.Re8 Qf4 46.Bd3 Qe4 47.Be4 g6 48.Qd7) 1–0. Cigala,Janez (2025) – Ghersinich,Giuseppe (2005), Open, Porec HUN, 2004.

6.Nf3 A) 6...a5 7.b5 Ngf6 (7...Be7 8.Be2 Ngf6 9.bc6 bc6 10.Qc2 h6) 8.Ng5 Be7 9.Be2 0-0 10.0-0 Nc5; B) 6...Ngf6 7.Ng5 Bf5 8.h3 Bg6 9.Be2 h6 10.Nf3 Be7; C) 6...Nb6 7.Qb3 C1) 7...Nf6 8.Be2 (8.Ng5 Be7 9.Bd3 0-0 10.0-0 d5) 8...Be7 9.Ng5 Bd7 10.0-0 0-0; C2) 7...Be7 8.d4 (8.Bd3 Nh6 9.a4 a5 10.0-0 ab4; 8.a4 a5 9.ba5 Ra5 10.Qb4 Nc8; 8.Be2 Nh6 9.d4 a5 10.ba5 Ra5) 8...Nf6 9.de5 (9.Be2 a5 10.Ng5 ab4) 9...de5 10.Ng5 (10.Rd1 Qc7) 10...0-0+= (10...Bg4 11.c5 Nbd5 12.e4 h6+-).

6.Qc2 a6 7.a4 (7.Nf3 Nb6=) 7...g6 (7...d5 8.cd5 Bd5 9.Nd5 Nd5 10.b5=+) 8.Nf3= Bg7 9.Be2 b6 10.0-0 0-0 11.d4 ed4 12.ed4 c6 13.Rad1 White prepares the advance d5 13...Qc7 14.d5 (better 14.Rfe1!?=) 14...cd5-/+ 15.Nd5? (better 15.cd5 Nd5! 16.Nd4-/+) 15...Bd5-+ 16.Qd3 Bb7 0-1. DarkKnightsPawn (2040) - haad (2015), ChessWorld.net, 2012.

6.d3 Be7 7.Be2 0-0 8.Nf3 c6 9.0-0 b6 10.a3 Qc7 11.h3 Rac8 12.Ng5 Bf5 13.e4 Bg6 14.Qb3 h6 15.Nf3 Nh5 16.Rfc1 Nf4 17.Bf1 Kh7 18.b5 (18.g3 Ne6=) 18...Nc5 19.Qd1 f5 20.g3 fe4 21.de4 Nfe6 22.Nd2? (better is 22.Bg2–/+) 22...Bg5-+ 23.Rc2 (23.bc6 Qf7 24.Qe1-+) 23...Nd4 24.bc6 Nc2 25.Qc2 Bd2 26.Nd5 Qf7 27.Qd2 Nb3 28.Qe3 Na1 29.Ba1 Rc6 30.f4 ef4 31.gf4 Rcc8 32.Qd4 Rce8 33.Bd3 Kh8 34.Bc3 Qd7 35.Kh2 Rf7 36.f5 Bh7 37.Nf4 Qe7 38.Qg1 Qg5 39.Qf2 Re5! 40.Be5 de5 41.Ne6 Qe7 42.Qg3 Qa3 43.Bf1 Qg3 44.Kg3 g6 45.Nd8 Rf6 46.fg6 Bg6 47.Bg2 Rd6 0–1. Holz auf der Heide,Gerhard – Schulz,Uwe (1720), GER–ch Seniors–B, 2008.

6.d4 ed4 7.ed4 d5 8.c5 =+.

6.d4 Be7 7.Nf3= 0-0 8.h3 Bf5 9.Nh4 Bg6 10.Ng6+= fg6 11.Bd3 ed4 12.ed4 d5 13.c5 c6 14.0-0+= Nh5 15.Qd2 Bg5 16.Qc2 Nf4 17.Rae1 Qc7 18.Ne2 Nd3 19.Qd3 Rae8 20.Bc1 Bc1 21.Nc1 Nf6 22.f3 Nh5 23.Qd2 Ng3 24.Re8 Re8 25.Re1 Rf8 26.Nd3+= Nf5 27.Ne5 a6 28.a4 Rb8 29.a5 Rf8 30.Qf2 Qd8 31.Kh2 Nh6 32.Re2 Rf5 33.Qe1 Qc7 34.Kg1 Rf8 35.g4 Qd8 36.Kg2 Qc7 37.Qg3 Nf7 38.f4+= Nd8 39.Nd3 h6 40.Qe3 Qf7+/- 41.Kg3 Kh7 42.h4 g5 43.hg5+= hg5 44.f5 Qf6 45.Rh2 Kg8 46.Ne5 Qe7?? 47.Rh8!!+- (47…Kh8 48.Ng6 Kh7 49.Qe7+-) 1–0. Juscamayta Zuegel,Tupac Amaru – Eichenauer,Claus, Oberschwaben–chB, 1995.

6.Nf3 a5 7.b5 Be7 8.Ng5 0-0 9.Ne6 fe6.

6.Nf3 Nb6 7.d3 =+.

6.Nf3 Be7 7.Be2 0-0 8.0-0 Ng4 9.Qc2 f5 10.h3 Nh6 11.Nd5 Bd5 12.cd5 e4? (better is 12...Nb6!?+=) 13.Nd4+- Rf7 14.Ne6 Qc8 0–1. Piriyev,Maksat – Vera_Cruz,Rui (1885), AA/C15/pr/L ICCF, 2012.

6.Nf3 Be7 7.Be2 0-0 8.d4 h6 (8...e4 9.Nd2=) 9.0-0 Nh7 (9...e4 10.Nd2 d5 11.cd5 Nd5 12.Nde4 Bb4 13.a3+=) 10.de5 Ne5 11.Nd5 c6 (11...Bf6 12.Nf6 Qf6 13.Ne5 de5 14.f4+/-) 12.Ne7+/- Qe7 13.Ne5 de5 14.Be5 Rad8 15.Qc2 (15.Qe1!?+/-) 15...Qb4+= 16.Bc3 Qe7 17.Qb2 f6 18.Rfb1 Rd7 19.c5 Ng5 20.Rd1 Rfd8 (worse is 20...Qc5 21.Rd7 Bd7 22.Bd4+/-) 21.Rd7 Rd7 22.Qb4 (22.Bd4 Bd5=) 22...Bd5 (22...b6 23.h4 bc5 24.Qa4=) 23.a3= Ne6 Attacking the isolated pawn on c5 (23...f5!?=) 24.Bg4+/- b5 (24...Kh8+/-) 25.a4 (better is 25.cb6!? c5 26.Qb1+/-) 25...ba4= 26.Ra4 (26.e4!? Bb3 27.e5 fe5 28.Qb8 Kf7 29.Qe5=) 26...Rb7+= 27.Be6 Be6 28.Qa5?? (better is 28.Qe4+=) 28...Rb1 (better is 28...Rb5 29.f3 Ra5 30.Ra5-+) 29.Be1 Qc5 30.Qd8 (30.Qc5?? Re1) 30...Kh7 31.Qd2 Bf5 (better is 31...Qc1 32.Qc1 Rc1-+) 32.f3? (better is 32.Rd4-+) 32...Qc2 (32...Qc2 33.Qc2 Re1 34.Kf2 Bc2 35.Ra7 Rc1-+) 0–1. Krivoshapko,Alexander – Tsalko,Vadim, 2008.

6.Nf3 g6 7.Be2 Bg7 8.0-0 0-0 9.d3 a5 10.b5 e4 11.Ng5 ed3= 12.Bd3 Qe7 13.a4 Ne5 14.Qc2 Nd3 15.Qd3=+ Bf5 16.Qd2 Rfe8 17.Rfe1 Nd7 18.e4+= Be6 19.h3 Bc4 20.Nd5 Bd5 21.ed5 Qf8 22.Re8 Re8 23.Bg7 Qg7 24.Re1 Re1–/+ 25.Qe1 Qe5 26.Qe3? Qe3-+ 27.fe3 Nc5 28.Ne4 Ne4 0–1. Bertram,Joe – Herrmann,Sebastian (1620), Blankenburg op–B, 2005.

6.Nf3 h6 7.d4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 h6 6.d4 Nbd7 7.Nc3).

6.Nf3 h6 7.Be2 Be7 8.0-0 0-0 9.d4 e4 10.Nd2 Bf5 11.Qc2+/- d5 12.cd5 Bb4 13.Bc4 Bc3 14.Bc3= Nb6 15.Bb3 Nbd5=+ 16.Bb2 Nb4 17.Qc5 Nfd5 18.a3+= Nd3 19.Qd5 Qd5 20.Bd5 Nb2 21.Bb7+/- Rae8 22.Rfc1 Re7+= 23.Rc5 Bg6 24.Rac1 Rb8+/- 25.Ba6 Rb6 26.Bf1 Nd3 27.Rc7+/- Rc7 28.Rc7 Rb2 29.Nc4 Rc2 30.Rc8 Kh7 31.d5 Ne5 32.d6 Bf5 33.Rc7 Nc4 34.Rc4 Rd2 35.Rd4 Rd4 36.ed4 Bd7 37.Bc4 f5 38.f3 ef3 39.gf3 Kg6 40.Kf2 Kg5 41.a4 Ba4= 42.Be6 Kf6 43.d5 f4 44.Ke2 Bb5 45.Kd2 a5 46.Kc3 Be2 47.Bg4 g6 48.Kd2 Bc4 49.Be6 h5?? 50.Bg8?? a4?? 51.d7+/- Ke7 52.d6! Kd7 53.Bc4 Kd6 54.Bf7+- a3? 55.Kc2 g5 56.Bh5 Ke5 57.Bg4 Kd4 58.Kb3 Ke3 59.Ka3 Kf2 60.Kb3 Kg2 61.h3 Kf2 62.Kc4 Ke3 63.Kd5 (63.Kd5 Kd3 64.Bf5 Kd2 65.Be4+-) 1–0. Margraf,A – Riederle, Schwabenliga, 1990.

6.ed4 Ngf6 7.Nf3 c6 (7...Qe7 8.Qe2=) 8.Bd3= Be7 9.0-0 0-0 10.Nbd2 d5 11.c5 b5 (11...Re8!?=) 12.a4+/- a6 13.ab5 (13.Ne5!? Qc7 14.f4 Ne5 15.de5+/-) 13...ab5+= 14.Ra8 Qa8 15.Qc2 Qb7 (15...Re8 16.Re1+=) 16.Ra1 (16.Ng5!? g6 17.Ne6 fe6 18.Re1+/-) 16...Ra8 17.h3 (17.Ra8 Qa8 18.Ng5 Nf8+=) 17...g6 (17...Ra1 18.Ba1 h6 19.Ne5=) 18.Ng5 Nf8 19.Ne6 fe6 (19...Ra1 20.Ba1 Ne6 21.Bb2=) 20.Nf3 Ra1 21.Ba1 Kg7 22.Ne5 N6d7 23.Nd7 (23.Qd2 Kg8+/-) 23...Nd7 24.Bc3 Qa6 25.Bd2 (25.Qe2 Nf8+=) 25...Bf6 26.Be3 (26.Qb2 e5=) 26...e5 (26...Qa1!? 27.Bf1 Bd4 28.Bd4 Qd4-/+) 27.de5 (27.Qb2 Qc8=) 27...Ne5=+ 28.Be2 (28.Bf1!?=+) 28...Nc4 29.Bc4 bc4 (29...dc4?! 30.Qd2=) 30.g4 d4 (30...Qa3 31.g5 Be5 32.Qe2-/+) 31.Bf4?? (better 31.g5 Qa1 32.Kg2 de3 33.gf6 Qf6 34.fe3=) 31...d3 (31...g5 32.Bg5 Bg5 33.Qf5-/+) 32.Qb1 (better 32.Qd2 c3 33.Bh6 Kf7 34.Qf4-/+) 32...c3 (32...Qa1 33.Qa1 Ba1 34.b5-+) 33.Be3? (better 33.g5 Bd4 34.Qe1-/+) 33...d2-+ 34.Qd1 Qd3 35.g5 (35.h4-+) 35...Bd4 36.Bf4 (36.h4 Be3 37.fe3 Kf7-+) 36...Qf5 37.Bd2 Qf2 (37...cd2?! 38.Qd2 Be5 39.Kg2-+) 38.Kh1 cd2 (38...cd2 39.Qg4 Qf1 40.Kh2 Be5 41.Qg3 Qf2 42.Kh1 d1Q 43.Qg1 Qfg1) 0-1. kianas (2130) - hermes_ (2075), ChessWorld.net, 2013.

6.Bd4 c5 7.Bc3 Ngf6 8.b5 Nb6 9.Nd2 Be7 10.Bd3 Nbd7 11.Qc2 Ne5 12.Be5 de5 13.a4 a5 14.Ngf3 b6 15.Ne4 Qc7 16.0-0-0 h6 17.h3 Rd8 18.Nf6 Bf6 19.g4 0-0 20.Rdg1 Be7 21.h4 g6 22.Bg6+/- Kg7 23.h5 Bc4 24.Bf5 Bd5 25.Rh3 Bf3= 26.Rf3 Bg5 27.Kb1 Qd6 28.Kc1 Qd4 29.Rd1?? Qa1-+ 30.Qb1 Rd1 31.Kd1 Qa4 32.Ke1 Rd8 33.Bc2 Qb4 34.Qb4–/+ cb4 35.e4 Rc8 36.Kd1 Rc5 37.Ba4 Rc4 38.Bc2 Rc3 39.Rf5? f6 40.Rg5 fg5 41.Kd2 Rf3 42.Ke2 Rf8 43.f3 Rd8 44.Bb3 Kf6 45.Bd5 Ke7 46.Kd2 Rd5! (46...Rd5 47.ed5 Kd6-+) 0–1. bentengutama (1965) – bishopbriggs (2105), net–chess.com, 2003.

6.Bd4 Ngf6 7.Nf3 d5 8.c5 g6 9.Nc3 Bg7 10.b5 c6 11.a4 0-0 12.bc6 bc6=+ 13.Ba6 Rb8 14.0-0 Qa5–/+ 15.Qd3 Bf5 16.Qe2 Nc5 17.Ne5 Na6 18.Nc6=+ Qc7 19.Nb8 Rb8 20.Qa6= Ng4 21.g3 Bd4 22.ed4 Qc3–/+ 23.Qa7 Re8 24.Qc5 Qb2 25.Qb5–/+ Re2?? 26.Qb2+= Rb2 27.Ra3 Rd2 28.h3 Nf6+= 29.a5 Ne8 30.a6 Nc7 31.a7 Na8? 32.Re1 Kf8 33.Rb3 Rc2 34.Rb8 Rc8 35.Rc1 Re8 36.Re1 (36.Re1 Rc8 37.Reb1+-) 1–0. gtate (1945) – lhoffman (1900), net–chess.com, 2003.

6.Bd4 Ngf6 7.Nf3 Be7 8.Nbd2 Nb6 9.Qc2 0-0 (9...c5 10.bc5 dc5 11.Be5=) 10.Bd3+= h6 11.Rd1 Re8 (11...c5 12.bc5 dc5 13.Bc3=) 12.0-0 Bg4 13.h3 Be6 14.Nb3 White plans c5 14...Rc8 15.c5 dc5? (15...Nbd5 16.Qd2 dc5 17.Nc5+/-) 16.bc5?? (better 16.Bf6 Bd5 17.Be7 Qe7 18.Nc5 Bf3 19.gf3+-) 16...Nbd5+= 17.Bf6 (17.a3 Qd7+/-) 17...Bf6 (17...Nf6? 18.Bc4 Bd5 19.Bd5 Nd5 20.e4+-) 18.e4 (18.Bh7!? Kh8 19.Bf5 Bf5 20.Qf5=) 18...Nb4= 19.Qb1 Nd3 20.Rd3 (worse 20.Qd3 Qd3 21.Rd3 Bc4-+) 20...Qe7 21.e5 (21.Rc1 Bb3 22.Rb3 b6=) 21...Bg5 (21...Be5 22.Ne5 Bb3 23.Ng6 fg6 24.Rb3 Qc5 25.Rb5=+) 22.Qd1 (22.Rd4 Rcd8=) 22...Bb3 (22...Rcd8 23.Rd8 Rd8 24.Qc2=) 23.ab3 (23.Qb3!? Qc5 24.Ng5 hg5 25.Rd7+=) 23...Qc5=+ 24.Ng5 hg5 25.Qg4 (25.Qf3!?=+) 25...Qe5-/+ 26.Re3 Qf6 (26...Qf4 27.Rfe1 Red8 28.Qh5-/+) 27.Rf3 (27.Rfe1 Red8-/+) 27...Qg6 28.Qc4 (28.Rf5 Rcd8-/+) 28...Qe6 (28...a6!? 29.Qd5-/+) 29.Qb5-/+ Qb6 30.Qg5 Re6 (30...c6 31.Qf5 Rc7 32.Rd1-/+) 31.Qg4 (31.Rd1 Rce8=+) 31...Rce8 32.h4 (32.Rg3 g6-/+) 32...Qc6 (32...Qb5 33.Ra1-/+) 33.Qb4 (33.Rg3 g6-/+) 33...Rg6 34.Rg3 Rg3 35.fg3 Re4 (35...Qd5 36.Qc3-+) 36.Qa5 (36.Qd2 a6-+) 36...a6 (36...Re2 37.Rf2 Rf2 38.Kf2 Qc2 39.Kf1 Qb3 40.Qc7-+) 37.Kh2 (37.Rd1 b5 38.Rd8 Kh7-+) 37...Qd6 (37...Re2 38.Rg1-+) 38.Qf5 (38.Qh5 f6-+) 38...Rh4 39.Kg1 Qd4?? (better 39...Qg3 40.Qf7 Kh7 41.Qf5 Qg6-+) 40.Rf2= Qd1 (40...Rh6 41.Qf7 Kh7 42.Qf5 g6 43.Qf8=) 41.Rf1 Rd4?? (better 41...Qd4 42.Rf2 Rh6 43.Qf7 Kh7 44.Qf5 g6=) 42.Qf7+- (42.Rd1?! Rd1 43.Kf2 Rd8+-) 42...Kh8 43.Rd1 Rd1 44.Kh2 Rd6 45.Qc7 (45.Qc7 Rc6 46.Qb7 Rh6 47.Kg1+-) 1-0. zembelek (2030) - ojosearp (2020), Rated Blitz game, lichess.org, 2014.

6.Nd2 g6 7.de5 de5 8.a3 Qe7 9.Ne2 Bg7 10.Qc2 Ngf6 11.Rd1 0-0 12.Ng3 f4=+ 13.ef4 Bg4 14.f3 ef4 15.Nge4 Ne4 16.Ne4 Qh4 17.Kd2 Bb2 18.Qb2 Bf5 19.Kc1 Qe7 20.Bd3 a5 21.Rhe1 ab4 22.ab4 Ne5 23.Nc5 Nd3 24.Nd3 Qd6 25.Nc5= Qf6 26.Qf6+= Rf6 27.Kb2 Kf8 28.Nd7 Bd7 29.Rd7 Rf7 30.Red1 Re8 31.Rf7 Kf7 ½–½. Suess,Stefan – Dvorak, Verbandsliga, 1985.

6.d5 Bf7 =.

6.de5 de5 7.a3 =+.

6.de5 Ne5 7.Qc2 Nf6 8.Nd2 Be7 9.a3 0-0 10.Ngf3= Nf3 11.Nf3 Ne8 12.Bd3 Qc8 13.0-0 Bd7 14.Rfe1 Bf6 15.Nd4 g6 16.Rac1 c5 17.Ne2 Bb2 18.Qb2 Nf6 19.Nc3 Bc6+= 20.Rcd1 Qc7 21.b5 Be4 22.Be4 Ne4 23.Ne4 fe4+= 24.Rd5 Rad8 25.h4 h6 26.Red1+= b6 27.Qe2 Rf6 28.Qg4 Qe7 29.a4 Kh7 30.R1d2 Qe6 31.Qd1 Qe7 32.a5 Qf8 33.Qa1 Qe7 34.Ra2 Rf7 35.g3 Qf8 36.Rad2 Rfd7 37.Qb1 Qe7 38.Ra2 Rc8 39.ab6 ab6 40.Ra6 Rb8 41.h5 Qe6 42.hg6 Qg6 43.Qd1 Qf6 44.Qg4 Qe7 45.Rh5 Qg7 46.Qe4+- Kh8?! 47.Qe6 Kh7 48.Rh6!! Qh6 49.Qd7 Kg8 50.Qc6 Qf6 51.Ra8 Ra8 52.Qa8 Kg7 53.Qb7 Kg6 54.Qe4 Kg7 55.g4 Qf7 56.Qf4 Qd7 57.Kg2 Qe8 58.Kg3 Qd7 59.Qg5 Kh8 60.Qf6 Kg8 61.g5 d5 62.Qc6 Qf7 63.Qd5 Kh8 64.Qd8 Kh7 65.Qb6 Qe7 66.Qf6 Qc7 67.f4 (67...Qd7 68.g6 Kh6 69.g7 Kh7 70.Qf8 Qg7 71.Qg7 Kg7 72.b6+-) 1–0. Wilk,Krzysztof (1980) – Hetnerowski,P (1800), Poland–chT2 U18, 1996.

6.Nf3 d5!? 7.cd5 Bd5 8.de5 Bb4 9.Bc3 Bc3 10.Nc3 Bc6+= 11.Bb5 Ne7 +=.

6.Nf3 e4 7.d5+= ef3 8.de6 Ne5 9.gf3 Qe7 10.f4+- Ng4 11.Bg2 0-0-0 12.Qd5 c6 13.Qf5 N8h6 14.Qg5 Qe6 15.Bh3 Rg8?? 16.Rg1+- Be7 17.Bg4 (17.Bg4 Ng4 18.Qg4 Qg4 19.Rg4+-) 1–0. machete99 (2200) – Unrated (2560), ICC, 2002.

6.a3 Nh6 7.Bd3 Be7 8.Qc2 f5 9.d5 Bf7 10.Bf5 Nf5 11.Qf5 0-0 12.Qc2 Bg6 13.e4+= Nf6 14.f3 Nh5 15.Ne2 Bh4 16.Kd1 Be7 17.Nd2 Bg5 18.Bc1 Be3 19.Nf1 Bc1 20.Rc1 Qg5 21.Nfg3 Ng3 22.Ng3 Qe3 23.Qc3 Qg5 24.Qd2 Qe7 25.Rf1 Rf7 26.Qe3 b6 27.Ne2 a5 28.b5 Raf8 29.Nc3 Qh4 30.h3 Rf4 31.Re1 Bh5 32.Rf1 h6 33.Rc2 Bg6 34.Rg1 Qe7 35.Rf2 Qf7 36.Rgf1 Bh5 37.Ne2 Rf6 38.g4 Bg6 39.f4 ef4 40.Rf4 Qe7 41.Ng3 Qe5 42.Nf5 Bf5+= 43.gf5 Qa1 44.Ke2 Qb2 45.Kf3 Qh2 46.h4 Qb2 47.Rf2+/- Qe5 48.Rg2 Re8 49.h5 Re7 50.Qd3 Qa1 51.Rh4 Rf8 52.Rg6 Qe1 53.Rh2 Kh7 54.Rgg2 Qa1 55.Rb2 Rfe8 56.f6 Rf7 57.e5 Kg8 58.e6 Rf6 59.Kg3 Qe1 60.Kh3 Qe5 61.Qe2=+ Qf5 62.Qg4 Qd3 63.Kh4 Qf1 64.Kg3?? Qd3?? 65.Kg2 Qf1 66.Kg3 Ref8 67.e7 Qg1 68.Kh4 Re8?? 69.Qg1+- (69.Qg1 Rf4 70.Kg3+-) 1–0. Bender,Wolfgang – Becker,Josef, Saarland–ch Germany, 1992.

6.d5 Bf5 A) 7.Nf3 Nh6 8.Be2 (8.a3 a5 9.Be2 ab4 10.ab4 Ra1 11.Ba1 Be7 12.0-0 0-0 13.Nc3+=; 8.Nbd2 a5 9.e4 Bg4 10.a3 Be7 11.h3 Bh5 12.Bd3 0-0 13.Qc2+=) 8...a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 Be7 12.0-0 0-0 13.Nc3+=; B) 7.Nc3 a5 8.a3 (8.e4 Bg6 9.a3 ab4 10.ab4 Ra1 11.Qa1 c5 12.b5 Be7 13.Nf3+=; 8.b5 Nc5 9.Nf3 Nh6 10.Be2 Be7 11.0-0 0-0 12.a3 a4 13.Nh4=) 8...ab4 9.ab4 Ra1 10.Ba1 c5 11.b5 Qa5 12.Nf3 Nb6 13.Nd2+=; C) 7.Nd2 a5 8.a3 (8.e4 Bg6 9.a3 Be7 10.Ngf3 f5 11.Bd3 Nh6 12.ef5 Nf5 13.0-0=; 8.ba5 Nc5 9.Ngf3 Ne7 10.Be2 c6 11.dc6 bc6 12.Nb3 d5 13.0-0=) 8...ab4 9.ab4 Ra1 10.Ba1 c5 11.Be2 cb4 12.Bh5 Bg6 13.Bg6=; D) 7.Bd3 e4 8.Bc2 (8.Be2 a5 9.a3 Ne5 10.Qa4 Kf7 11.ba5 Ra6 12.Nd2 Qa8 13.Bc3+=) 8...a5 9.Nd2 ab4 10.Be4 Be4 11.Ne4 Qe7 12.Qc2 c6 13.Rd1+=.

6.d5 Bf7 7.a3 A) 7...Bg6 8.Bd3 (8.Nf3 a5 9.Nh4 Bf7 10.Be2 Ne7 11.0-0 c6 12.e4 ab4 13.ab4+=; 8.Nc3 f5 9.Nh3 Be7 10.Be2 Bf6 11.0-0 Ne7 12.f4 0-0 13.fe5+=; 8.Be2 Be7 9.Nf3 Nh6 10.0-0 f5 11.Qa4 0-0 12.Nc3 Ng4 13.Qb5+=) 8...e4 9.Bc2 Ne5 10.Nd2 a5 11.Ne2 Nh6 12.0-0 ab4 13.ab4+-; B) 7...c6 8.Nc3 (8.e4 a5 9.Nf3 ab4 10.ab4 Ra1 11.Ba1 Qb6 12.Bc3 Be7 13.Bd3+=; 8.dc6 bc6 9.Nf3 Rb8 10.e4 a5 11.Bc3 d5 12.ed5 cd5 13.c5=; 8.Nf3 a5 9.Nc3 ab4 10.ab4 Ra1 11.Ba1 f5 12.e4 Qb6 13.ef5=) 8...f5 9.Nf3 Nb6 10.dc6 bc6 11.c5 Nc4 12.Bc4 Bc4 13.e4+=; C) 7...a5 8.Nc3 (8.Bd3 c6 9.Nc3 ab4 10.ab4 Ra1 11.Qa1 Ne7 12.e4 b5 13.Qd1=; 8.Nf3 ab4 9.ab4 Ra1 10.Ba1 c6 11.Nc3 f5 12.Be2 Nb6 13.0-0+=; 8.Be2 ab4 9.ab4 Ra1 10.Ba1 c6 11.Nf3 Qb6 12.dc6 Qc6 13.Nbd2=) 8...ab4 9.ab4 Ra1 10.Qa1 Bg6 11.Qa4 Ne7 12.Nb5 Qb8 13.Qa8+=; D) 7...f5 8.Nf3 (8.Nh3 c6 9.dc6 bc6 10.Bd3 a5 11.0-0 ab4 12.ab4 Ra1 13.Ba1=; 8.Nc3 Ngf6 9.Nf3 Bh5 10.Be2 Nb6 11.Nd2 Be2 12.Qe2 Be7 13.f4+=; 8.Nd2 Ngf6 9.Qc2 g6 10.Ngf3 Bg7 11.Be2 0-0 12.0-0 h6 13.Rfd1+=) 8...Ngf6 9.Qc2 g6 10.Be2 Bg7 11.0-0 0-0 12.Nc3 Qe7 13.Rfd1+=.

6.d5 Bf7 7.Nc3 A) 7...f5 8.Bd3 (8.Nf3 Be7 9.Be2 Nh6 10.0-0 0-0 11.a3 a5 12.Qc2 c6 13.Rfb1+=; 8.e4 fe4 9.Ne4 Ngf6 10.Bd3 a5 11.Nf6 Qf6 12.a3 Be7 13.Ne2=; 8.Be2 a5 9.a3 ab4 10.ab4 Ra1 11.Qa1 c6 12.Qa7 Qc8 13.Nf3+=) 8...e4 9.Be2 Ngf6 10.Nh3 a5 11.a3 Ne5 12.Ng5 Bg8 13.0-0+=; B) 7...c6 8.a3 (8.Be2 Qb6 9.a3 a5 10.b5 Nc5 11.Rb1 Ne7 12.bc6 bc6 13.e4+=; 8.Bd3 Ne7 9.Ne4 Qc7 10.dc6 Nc6 11.a3 d5 12.cd5 Bd5 13.Nf3=; 8.Nf3 Qb6 9.a3 a5 10.b5 Nc5 11.Be2 Ne7 12.0-0 Rd8 13.e4+=) 8...f5 9.Nf3 Nb6 10.dc6 bc6 11.c5 Nc4 12.Bc4 Bc4 13.e4+=; C) 7...Ne7 8.a3 (8.Bd3 c6 9.Ne4 Qc7 10.dc6 Nc6 11.a3 d5 12.cd5 Bd5 13.Nf3=; 8.Be2 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 c6 12.e4 Qb6 13.Qa4+=; 8.Nf3 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 c6 12.e4 Qb6 13.Qa4+=) 8...Nb6 9.e4 a5 10.Bd3 c6 11.Nf3 f5 12.ef5 ab4 13.ab4+=; D) 7...a5 8.a3 (8.b5 Be7 9.Nf3 f5 10.Be2 Nh6 11.0-0 0-0 12.Rb1 Bg6 13.a4=; 8.ba5 Ra5 9.Nf3 Nc5 10.Be2 Bg6 11.0-0 Nh6 12.Nh4 Bf7 13.e4+=) 8...ab4 9.ab4 Ra1 10.Ba1 c5 11.b5 f5 12.Be2 Ngf6 13.Nh3+=.

6.d5 Bf7 7.Bd3 A) 7...a5 8.a3 (8.b5 Nc5 9.Bc2 Ne7 10.Nf3 Bh5 11.Ba3 e4 12.Bc5 ef3 13.g4=) 8...c6 9.Nc3 ab4 10.ab4 Ra1 11.Ba1 Ne7 12.e4 Qb6 13.Qa4+=; B) 7...Ne7 8.a3 (8.Nc3 c6 9.Ne4 Nb6 10.c5 Nbc8 11.dc6 Nc6 12.Bb5 dc5 13.Qd8=; 8.Nf3 c6 9.dc6 Nc6 10.a3 Nb6 11.Qc2 Rc8 12.0-0 a5 13.Qc3=; 8.Nd2 c6 9.Ne4 Qc7 10.dc6 Nc6 11.a3 d5 12.cd5 Bd5 13.Nf3=) 8...f5 9.Nh3 a5 10.Ng5 Bg8 11.Ne6 Be6 12.de6 Nf6 13.Qb3+=; C) 7...Be7 8.a3 (8.Nf3 Bh5 9.0-0 Nh6 10.Nbd2 f5 11.Qb3 0-0 12.Qc3 Nf6 13.Bc2=; 8.Nc3 a5 9.a3 c6 10.Nf3 Qb6 11.Qb1 ab4 12.ab4 Ra1 13.Ba1+=; 8.Qc2 c6 9.dc6 bc6 10.Bh7 Rb8 11.a3 a5 12.Bc3 Bc4 13.Bg6=) 8...c6 9.Nc3 a5 10.Nf3 Qb6 11.Qb1 ab4 12.ab4 Ra1 13.Ba1+=; D) 7...c6 8.e4 (8.dc6 bc6 9.a3 a5 10.b5 Nc5 11.Nc3 Nd3 12.Qd3 cb5 13.cb5=; 8.Nc3 Ne7 9.Ne4 Qc7 10.dc6 Nc6 11.a3 d5 12.cd5 Bd5 13.Nf3=; 8.Nf3 cd5 9.cd5 Bd5 10.Bh7 Bf7 11.Bc2 d5 12.a3 a5 13.b5=) 8...Qb6 9.a3 Nc5 10.Bc1 Nd3 11.Qd3 Ne7 12.Be3 Qa6 13.b5+=.

6.d5 Bf7 7.e4 Ne7 (7...a5 8.a3 (8.b5 Nc5 9.Nc3 Bg6 10.Bd3 Ne7 11.Bc2 Nc8 12.Nf3 Nb6 13.Nd2=) 8...Be7 9.Bd3 ab4 10.ab4 Ra1 11.Ba1 c6 12.Nf3 Nh6 13.Bc3+=; 7...Be7 8.a3 (8.Nf3 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 Nh6 12.Bd3 0-0 13.0-0=; 8.Nc3 a5 9.a3 Nh6 10.Nf3 0-0 11.Bd3 f5 12.0-0 Bh5 13.Re1=; 8.Bd3 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 Nh6 12.Bc3 Bg6 13.Bd2+=) 8...Bg6 9.Bd3 Nh6 10.Bc1 Nf7 11.h4 h5 12.Rh3 a5 13.Rg3+=; 7...Bg6 8.Nd2 (8.Nc3 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 c5 12.b5 Be7 13.Nf3+=; 8.Bd3 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 c5 12.b5 Nh6 13.Ne2+=; 8.Qf3 Ne7 9.h4 f5 10.ef5 Bf5 11.g4 Bc2 12.Qe2 Bb1 13.Rb1=) 8...Ne7 9.Ngf3 a5 10.a3 c6 11.Be2 Qb6 12.c5 dc5 13.Nc4+=) 8.Nc3 (8.Nf3 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 c5 12.b5 Ng6 13.Be2+=; 8.Bd3 a5 9.a3 c5 10.b5 Ng6 11.Ne2 Be7 12.0-0 0-0 13.Nd2+=; 8.Nd2 Bg6 9.Ngf3 a5 10.a3 ab4 11.ab4 Ra1 12.Qa1 c5 13.b5+=) 8...g6 (8...Ng6 9.Nf3 a5 10.b5 Be7 11.Bc1 0-0 12.Be2 Nc5 13.0-0+=) 9.Ba3 (9.Nf3 a5 10.a3 Bg7 11.Be2 0-0 12.0-0 f5 13.Ng5+=) 9...a5 (9...Bh6 10.Nf3 a5 11.ba5 Ra5 12.Bb4 Ra8 13.Bd3=) 10.Nb5 (10.ba5 Bh6 11.Bb4 0-0 12.Rb1 f5 13.Nf3+=) 10...ab4 11.Bb4 b6?? (better 11...Bg7= 12.Bd3 0-0 13.Nf3=; 11...Bh6 12.Nf3 0-0 13.h4=) 12.Bd6+- Rc8?? (12...Nd5 13.Bf8 Ne3 14.fe3 Rf8+-) 13.Bc7 (13.Bc7 Nd5 14.Bd8 (14.ed5?! Bb4 15.Ke2 Rc7+-) 14...Bb4 15.Ke2 Nc3 16.Nc3 Bc3 17.Rc1 Bc4 18.Kf3 Bf1 19.Bb6 Nb6 20.Qf1+-) 1–0. Hotak,M (2045) – Mesaros,J (1885), Tatry Open Tatranske Zruby CZE, 2010.

6.d5 Bf7 7.Nf3 A) 7...c6 8.Be2 (8.e4 Qb6 9.Bc3 Be7 10.a4 Qc7 11.Bd3 f5 12.dc6 Qc6 13.Nbd2+=; 8.dc6 bc6 9.a3 Rb8 10.Nc3 Nb6 11.Nd2 a5 12.Be2 d5 13.ba5=; 8.Nc3 Qb6 9.a3 a5 10.Na4 Qd8 11.dc6 bc6 12.b5 cb5 13.cb5+=) 8...Qb6 9.b5 Nc5 10.Nc3 a6 11.a4 ab5 12.ab5 Ra1 13.Qa1+=; B) 7...Ne7 8.Be2 (8.Nc3 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 c6 12.e4 Qb6 13.Qa4+=; 8.a3 f5 9.Be2 h6 10.Nc3 g5 11.0-0 Bg7 12.e4 0-0 13.Re1+=; 8.e4 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 c5 12.Bc3 Bg6 13.Bd3+=) 8...c6 9.Nc3 Nb6 10.e4 a5 11.b5 cd5 12.ed5 Rc8 13.Nd2+=; C) 7...Be7 8.Nc3 (8.Be2 Nh6 9.0-0 f5 10.Nc3 0-0 11.a3 a5 12.Qc2 c6 13.Rfd1+=; 8.a3 f5 9.Bd3 Nh6 10.0-0 0-0 11.Be2 a5 12.Nc3 c6 13.dc6+=; 8.Bd3 c6 9.Be4 Rc8 10.0-0 Nh6 11.dc6 bc6 12.Na3 a5 13.b5=) 8...f5 9.Be2 a5 10.a3 ab4 11.ab4 Ra1 12.Qa1 c6 13.0-0+=; D) 7...a5 8.ba5 (8.a3 ab4 9.ab4 Ra1 10.Ba1 c6 11.Nc3 f5 12.e4 Qb6 13.ef5=; 8.b5 Be7 9.Be2 Nh6 10.Nc3 0-0 11.0-0 f5 12.a3 Bg6 13.Re1=) 8...Nc5 9.Be2 Ra5 10.0-0 Ne7 11.Ba3 Bg6 12.Bb4 Ra8 13.Bc5+=.

6.Qc2 Nf8 7.Nc3 c6 8.d4 Ng6 9.Rd1 f5 10.de5 Qc7 11.ed6 Bd6 12.c5 Be5 13.Ne5 Ne5 14.Be2 Nf6 15.0-0 0-0 16.h3 Nd5 17.Nd5 Bd5 18.Be5 Qe5 19.Bc4 Rad8 20.Rd2 g6 21.Rfd1 Kg7 22.Bd5 Rd5 23.Rd5 cd5 24.Qa4 Rf7 25.Qa7 f4 26.ef4 Qf4 27.c6 bc6 28.Qd4 Qd4 29.Rd4 Ra7 30.Rd2 Kf6 31.b5 cb5 32.Rd5 Ra2 33.Rb5 h5 34.g4 hg4 35.hg4 Ra4 36.f3 Ra2 37.Kf1 Rc2 38.Rb4 Kg5 39.Re4 Rb2 40.Re2 Re2 41.Ke2 Kf4 42.Kf2 g5 43.Ke2 Ke5 44.Ke3 Kd5 45.f4 gf4 46.Kf4 Ke6 47.Kg5 Kf7 48.Kh6 Kg8 49.g5 Kh8 50.g6 Kg8 51.g7 1–0. purplegadge (1745) – akbar11 (1730), gameknot.com, 2014.

6.Nc3 f5 7.d3 Ngf6 8.Ng5 Bg8 9.Be2 g6 10.0-0+= h6 11.Nf3 Bf7 12.e4 f4 13.Qc2 c6 14.a3 g5 15.Rad1 Qc7 16.d4+= Rg8 17.Kh1 h5 18.b5 Ng4 19.bc6 bc6 20.d5 Rb8 21.Rb1 Ngf6= 22.Bd3 Nc5 23.Be2 cd5 24.Nd5= Nd5 25.cd5 g4 26.Nd2 h4 27.f3 Bh5 28.fg4+= Bg4 29.Bg4 Rg4 30.Qd1 Qd7 31.h3 Rg5 32.Nf3 Rg3 33.Nd2 Rh3 34.gh3 Qh3 35.Kg1 Kd7 36.Nf3?? Rg8 37.Kf2 (37.Ng5 Rg5 38.Qg4 Qg4 39.Kf2 Nd3#) 0–1. Sternik,Ryszard – Okecki,Jerzy, Rynia, 1990.

6.Nc3 f5 7.d4 Bf6 (7...a5 8.d5 Bf7 9.a3=) 8.d5 Bf7 9.Be2 g5 (9...Ne7 10.0-0=) 10.h3 (10.e4 a5 11.ba5 Bg6+=) 10...h5 (10...Ne7 11.e4+=) 11.Nd2 (11.e4 a5 12.b5 Bg6+=) 11...Nh6 Black prepares g4 (11...Ne7!?=) 12.Bh5+- Bh5 (12...e4 13.Be2+-) 13.Qh5 Nf7 14.Qe2 (14.Qf3 f4+-) 14...Qe7 (14...e4 15.f3 a5 16.a3 ef3 17.Qf3+=) 15.e4 g4 (15...f4 16.Nb5 Kd8 17.0-0+-) 16.ef5 gh3 17.gh3 (17.Rh3 Rh3 18.gh3 0-0-0+-) 17...Ng5 (17...Nh6 18.Qh5 Nf7 19.Qf3+-) 18.0-0-0 (18.h4 0-0-0+-) 18...0-0-0 (18...Nh3 19.Qg4 Rh4 20.Qg6 Kd8 21.Nf3+-) 19.Nde4 (19.Qe3 a6+-) 19...Nh3 (19...Rh4 20.c5!+- (20.Nf6?! Qf6 21.Qe3 Qf5=)) 20.Qe3+- Bg5 21.Ng5 Qg5? (better 21...Ng5 22.f4 Rh1 23.Rh1 Nf7+-) 22.Rh3! Qf5 (22...Rh3 23.Qg5 Remove defender) 23.Rdh1 (23.Rf3 Qg4 24.Ne4 Rh4+-) 23...Rh3 24.Rh3 (worse 24.Qh3 Qf4 25.Qe3 Qc4 26.Qa7 Nb6+-) 24...Qf4 (24...Rg8+-) 25.Qf4 ef4 26.Ne4 (26.Ne2 Nb6 27.Nf4 Nc4+-) 26...b6 (26...Re8 27.c5 dc5 28.bc5+-) 27.Rh8 (27.Ng5 Rg8 28.Ne6 a5+-) 27...Ne5 (27...Rh8 28.Bh8 a5 29.ba5 ba5 30.Bd4+-) 28.Be5 de5 29.Rd8 (29.Rh5 Re8+-) 29...Kd8 30.Kc2 (30.b5 Ke7+-) 30...Kd7 31.Kd2 (31.Kd3 b5+-) 31...c6 32.Ke2 (32.Kd3 Kc7+-) 32...cd5 (32...b5 33.Nf6 Kc8 34.cb5 cd5 35.Nd5+-) 33.cd5 Ke7 (33...a5 34.ba5 ba5 35.Kd3+-) 34.d6 (better 34.Kd3!? Kd7+-) 34...Ke6 35.f3 a6 36.b5! a5 (36...ab5 37.Kd3 Combination) 37.Kd3 Kd7 (37...a4 38.Kc4+-) 38.Kc4 Ke6 39.a3 (39.a3 a4 40.d7 Kd7 41.Kd5+-) 1–0. jaddwarrior (2040) – Fullmuppet (1895), ChessWorld.net, 2015.

6.Nc3 Ngf6 7.a3 c6 8.d4 e4 9.Nd2 Bg4 10.Qc2 Bf5 (10...d5!?=) 11.c5 d5 12.b5 0-0 13.a4 Qc7 14.Be2 Rfe8 15.0-0 Bf8 16.Nb3 b6 17.bc6 Qc6 18.Bb5 Qc7 19.cb6 Qb6 20.Qe2 Bb4 21.Rfc1 Rac8 22.Bd7 Rc4?? ( 22...Bd7 23.Rab1 Bg4=+) 23.Bf5 ( 23.Nd5 Rc1 24.Rc1 Nd5 25.Be8 Qg6+-) 23...Bc3 24.Bc3 Qb3 25.Rab1 ( 25.Qe1+-) 25...Qa4?? ( 25...Rc3 26.Rb3 Rc1 27.Qf1 Rf1 28.Kf1 g6=) 26.g3 (26…Ra8 27.Qd2+-) 1–0. slavisa99 – manitou51, Live Game Caissa's Web, 2004.

6.Nc3 Ngf6 7.Be2 Nb6 8.d3 a6 9.a4 0-0 10.0-0 c6 11.Ng5 Bf5 12.Bf3 Rb8 13.g3 d5 14.e4 de4–/+ 15.Nce4 Qc7 16.Qb3= Nbd7 17.Rfe1 Ne8 18.Bg2 h6 19.Nf3= Be6 20.Ned2 f6 21.Ba3 b5 22.ab5 cb5 23.Qc3 Nb6 24.c5+= Rd8 25.d4+/- Na4 26.Qc2 Bd5 27.de5 Bf3 28.Nf3+- fe5 29.Ne5 Bf6 30.Ng6 Rf7? 31.Rad1 Nc3? 32.Rd3 Na4 33.Bd5 Qc8 34.Bf7 Kf7 35.Rf3 Qg4 36.Ne5 (36.Ne5 Kf8 37.Ng4 Nc5 38.Qc5 Kg8 39.Qc6+-) 1–0. algernon (2175) – capacuba (2255), net–chess.com, 2010.

6.d4 ed4 7.Nd4 Ngf6 8.Be2 c6 (8...a5 9.a3=) 9.0-0+= Nb6 10.Nd2 Qc8 11.Ne6 Qe6 12.Qc2 0-0 13.Nf3+/- h6 14.Nd4 Qd7 15.Rfd1 Rfd8 16.a4 Rac8 17.a5 Na8 18.a6 b6 19.Qf5 Qf5 20.Nf5 Kf8 21.Nd4 Ne8 22.Bg4 Rc7 23.Bf3 c5 24.bc5 Rc5 25.Nc6 Rd7 26.Ne7 Re7 27.Ba8 Rc4 28.g3 Rec7 29.Bd4 Ke7 30.Bb6! ab6 31.a7 (31.a7 R7c5 32.Bd5+-) 1–0. Pcmvr (2080) – Badplayer (2010), internet, 2008.

6.d4 ed4 7.Nd4 Ngf6 8.Ne6 fe6 9.Bd3 0-0 10.0-0 a5 11.b5 Nc5 (11...d5 12.cd5 Nc5 13.Nc3 ed5 14.Bf5=) 12.Bc2 e5 (12...d5 13.Nd2=) 13.Nc3+= Qe8 (13...c6 14.Rb1+=) 14.f4+- Rd8 (14...ef4 15.Rf4 Qh5 16.Qh5 Nh5 17.Rf8 Rf8 18.Rf1+=) 15.Qe2 Kh8 (15...Qd7 16.Rf3+-) 16.g4 (better 16.Rad1+-) 16...b6? (better 16...c6!?+-) 17.g5+- Ng8 (17...Nfd7 18.Qg2 Kg8 19.Nd5+-) 18.Nd5 Qd7 (18...Rc8 19.Qg4 Qd7 20.Qg2+-) 19.Qg2 Rde8 (19...Qe6 20.Rf3 e4 21.Rh3+-) 20.Rf3 Bd8 21.Rh3 e4 22.Bd1 Nd3 (22...Re6 23.Rh4 h6 24.Bg4+-) 23.Bd4 Ne7 (23...Nb4+-) 24.g6 h6 (24...Qh3 25.Qh3 Ng6+-) 25.Rh6 Kg8 26.Qg5 Rf5 (26...gh6?? 27.Qh6 Qg4 28.Bg4 Nd5 29.Qh7) 27.Rh8! Kh8 (27...Kh8 28.Qh6 Mate attack) 28.Qh6 Kg8 29.Qg7 1–0. Janek – ChessVlad, internet, 2017.

6.d4 ed4 7.Nd4 Ngf6 8.Ne6 fe6 9.Bd3 c5 10.b5=.

6.d4 ed4 7.Nd4 Ngf6 8.Ne6 fe6 9.Bd3 e5 10.Nc3+= 0-0 11.0-0 Re8 (11...c6 12.Qb3+=) 12.g4 (12.a3 a5+=) 12...Nf8 13.g5 N6d7 14.Be4 (14.f4 ef4 15.ef4 a5+=) 14...Rb8 (14...c6 15.a3+=) 15.Bd5 Kh8 16.h4 Nb6 17.Bf7 Qd7 18.Qh5 (18.c5 dc5 19.Qd7 Nbd7 20.Be8 Re8+-) 18...g6 (18...Red8 19.f4+=) 19.Qf3 (19.Be8 Qe8 (19...gh5? 20.Bd7 Nfd7 21.Nd5+-) 20.Qe2 Qc6+-) 19...Ne6 (19...Rec8 20.c5 Na8 21.Rad1+-) 20.c5 (20.Be8!? Re8 21.Qe2+-) 20...Nc4+- 21.Qg4 Nc5?? (better 21...Nb2 22.Be6 Qd8+-) 22.Qd7 (better 22.Qc4!? Na6+-) 22...Nd7 23.Bc4 1–0. Marcus – 67, internet, 2018.

6.d4 e4 7.Nfd2 d5 8.a3 c6 9.Nc3 Ngf6 10.Be2 Bd6 11.Rc1 Rc8 12.g4 h6 13.c5 Be7 14.Nf1 Nh7 15.Ng3= Bh4 16.b5 Qa5 17.Kf1 0-0 18.Qd2 f5 19.Nce4 Qd2= 20.Nd2 fg4 21.Kg2 Ng5 22.a4 Rf7 23.Rcf1 Rcf8 24.Bc1 Nf6 25.Bd3 Nfe4! 26.f4?? gf3-+ 27.Rf3 Bh3 28.Kg1 Nf3 29.Nf3 Rf3 30.b6 Rf2 (30...Rf2 31.Be4 Rf1 32.Nf1 Rf1#; 30...Bg3 31.hg3 Rg3 32.Kh2 Rf2#) 0–1. Williams,Barry M – Whitlock,Dennis R, corr NZCCA TT res, 2001.

6.d4 e4 7.Nfd2 d5 8.b5 c6 9.bc6 bc6 10.c5 (10.Nc3 Rb8 11.Rb1 Ngf6 12.Qa4 Qc7 13.cd5 Bd5 14.Qc2 Qa5 15.Bc4=; 10.Ba3 Rb8 11.Qa4 Qc7 12.Be2 Ba3 13.Qa3 Qb6 14.Nc3 Qb2 15.Qb2=; 10.Qa4 Rb8 11.Ba3 Qc7 12.Be2 c5 13.Nc3 cd4 14.ed4 dc4 15.Nde4=; 10.cd5 cd5 11.Nc3 Ngf6 12.Rb1 0-0 13.Bb5 Bd6 14.Be2 Ne8 15.Nb5+=) 10...Ngf6 (10...Rb8 11.Qc2 Ngf6 12.Nc3 a5 13.Rb1 0-0 14.Be2 Qc7 15.f3=) 11.Qa4 (11.Nc3 Rb8 12.Rb1 a5 13.Be2 Qc7 14.0-0 0-0 15.f3=) 11...Qc7 (11...Rb8 12.Bc3 Qc7 13.Ba6 Nf8 14.Ba5 Qd7 15.0-0=) 12.Bc3 (12.Nc3 0-0 13.Rb1 Rab8 14.Ba6 Bd8 15.Nb3=) 12...a5 (12...Rb8 13.Ba6 Nf8 14.Ba5 Qd7 15.Nc3=) 13.Nb3 Bd8 14.Be2 (14.N1d2 0-0 15.Be2=) 14...0-0 15.0-0 (15.N1d2=) 15...Bg4 16.Nc1 Be2 17.Ne2 Ng4 18.g3 f5 19.Nf4 Be7 (better is 19...Rf6 20.h3 Nh6=) 20.Ne6+- Qb7 21.Nf8 Rf8 22.h3 Nh6 23.Nd2 Rf6 24.Rab1 Qc8 25.f4 Rg6 26.Kf2 Nf6 27.Qb3 Qa6 (27...a4 28.Qb8 Qb8 29.Rb8 Kf7+-) 28.Qc2 (better is 28.Qb7 Qb7 29.Rb7+-) 28...Nhg4+/- 29.hg4 Ng4 30.Ke1 Ne3 31.Qb3 Nf1 32.Nf1+/- Re6 33.Bd2 h5 34.Qc3 h4 35.Rb8 Kh7 36.Rb6 Qc8 37.gh4 Bh4 38.Kd1 Qe8 39.Ne3 Qh5 40.Kc2 Bg3 41.Nd5! Qg4 42.Rb3 Rg6? 43.Ne7 (43.Ne7 a4 44.Rb6+-) 1–0. Mydlowski,Przemyslaw – Lasota,Kacper, Kowalewo Pomorskie Poland, 2010.

6.d4 e4 7.Nfd2 f5?? 8.Nc3 c6 9.Be2 Ngf6 10.b5 0-0 11.a4 a5 12.bc6 bc6 13.Qc2 Qc7 14.Ba3 Rf7 15.Rb1= Rb8 16.0-0 Bf8 17.Rb8 Nb8= 18.Rb1 d5 19.Bf8+= Rf8 20.Qb3 f4 21.cd5+/- Nd5 22.Nde4 fe3 23.fe3 Qe7 24.Bc4+- Rd8 25.Nc5 Bf7 26.e4 Nc3 27.Qc3 Qf6? 28.Rf1 (28.Rf1 Qh6 29.Rf7+-) 1–0. Melich,Jindrich (2150) – Fila,Milos (2045), CZE–chT2b, 2001.

6.d4 e4 7.d5 Bg4 8.Qc2 Ngf6 9.Nfd2 a5 10.a3 Ne5 11.Ne4 0-0 12.Nbc3 +=.

6.d4 Bf6 7.Nc3 c6 8.a3 Ne7 9.Ne4 Nf5?? 10.Nf6 Nf6 11.de5 de5 12.Ne5 0-0 13.Qd8 Rad8 14.Bd3 Nd7 15.Be2 Rfe8 16.Nf3 Nb6 17.Rc1 f6 18.0-0 Rd7 19.c5 Nc8 20.Rfd1+- Red8 21.e4 Nfe7 22.Nd4 Bf7 23.Bg4 Rc7 24.Ne6 Rd1 25.Rd1 Nd5 26.Nc7 (26.Nc7 Nc7 27.Rd8 Ne8 28.Bc8+-) 1–0. Palacios Sanchez,Gabriel – Ruiz Cadierno,A, Catalunya Baix Llobr op, 2000.

6.d4 Bf6 7.Nc3 Qe7 8.Be2 ed4 9.Nd4+= Ne5 10.Nd5+/- Bd5 11.cd5 Nh6 12.Qa4 Kf8 13.Rc1 Neg4 14.Qc2 Nf2? 15.Kf2 Re8 16.Qd3 Bg5 17.Nc2 Nf5 18.Bd4 Bh4 19.g3 Qg5 20.Rhg1 Qh6 21.Qf5 Bg5 22.h4 Bh4 23.Bg7! Kg7 24.gh4 Kf8 25.Bh5 Re7 26.Rg5 Rg8 27.Qc8 Re8 28.Rg8 Kg8 29.Qe8 (29.Qe8 Kg7 30.Qf7 Kh8 31.Rg1 Qe3 32.Ke3 c5 33.Rg8#) 1–0. Blumenberg,Walter – Linke,Michael, Porz op, 1994.

6.d4 Bf6 7.Nbd2 ed4 8.Nd4 Qe7 (8...Ne7 9.Ne4+=) 9.Ne4 (9.Be2 c5 10.bc5 Nc5+=) 9...Be5 (9...d5 10.Nd2=) 10.Be2 Ngf6 11.Ng5 0-0 12.Qc2 (worse is 12.Nde6 fe6 13.Be5 de5+=) 12...Bg4?? (better is 12...Bd4 13.Bd4 a5+=) 13.Bg4+- h6 14.Bd7 hg5 15.Bf5 1–0. Matveenko,Yury – Pozhidaev,Eduard, VRN Veteran Champs, 2007.

6.d4 Bg4 7.Be2 Bf6 8.0-0+= Ne7 9.h3 Bf3 10.Bf3 c6 11.a4 0-0 12.b5 Qc7 13.Nd2 Ng6 14.a5 a6 15.Qa4 Rac8 16.bc6 bc6 17.Rab1 Be7 18.Ba3 f5 19.Rb3 e4 20.Be2 c5 21.Rfb1 Rb8 22.Rb8 Rb8 23.Rb8+/- Nb8 24.g4 Qc6 25.Qc6+- Nc6 26.gf5 Nh4 27.dc5 dc5 28.Ne4 Nf5 29.Bc5 Kf7 30.Be7 Ke7 31.c5 Na5 32.Ba6 Kd7 33.Bb5 Kc7 34.Kg2 Nb7 35.Kf3 1–0. Kaenel,Hansjuerg – Polacek,Jozef, CZE, 1969.

6.Be2 f5 7.0-0 Ngf6 8.a3 0-0 (8...Nb6 9.c5 dc5 10.bc5 Bc5 11.Be5=) 9.d3 (9.Ng5 Bf7+=) 9...c6 10.Nbd2 Rf7? (10...h6 11.Qc2=) 11.e4?? (11.Ng5 Nf8+-) 11...f4?? (better is 11...h6!?=) 12.d4 (12.Ng5 Nf8+-) 12...Bg4 (12...Rf8!?+/-) 13.de5 Bf3 14.Bf3 (better is 14.Nf3 Ne5 15.Ng5+-) 14...de5+= 15.Qc2 Qc7 16.Rad1 Nf8 17.c5 Ng6 18.Nc4 Rd8 19.Rd8 Bd8 20.Rd1 Rd7 21.Rd7 Nd7 22.g3 fg3+/- 23.hg3 Nf6 24.Kg2 Nd7 25.Qd3 Ndf8 26.Ne5! Ne5 27.Be5 Qd7 28.Qd7 Nd7 29.Bd6 Nf6 30.e5 Nd5 31.Bd5 cd5 32.f4 Kf7 33.Kf3 g5 34.f5 h5 35.Ke3 h4 36.gh4 gh4 37.Kd4 h3 38.Kd5 Ke8 39.e6 Be7 40.Bh2 Bf6 41.Kd6 Kd8 42.a4 a6 43.b5 ab5 44.ab5 Be7 45.Kd5 Bf6 46.c6 bc6 47.Kc6 Kc8 48.b6 (48.b6 Kd8 49.b7 Bd4 50.b8Q Ke7 51.Qc7 Kf6 52.Qf7 Kg5 53.Qg6 Kh4 54.Bg3) 1–0. Fournier,Frederic (1975) – victored (1955), Active (3/0), 2004.

6.Be2 f5 7.0-0 Ngf6 8.h3 0-0 (8...Nb6 9.Qb3=) 9.Qb3 (9.Ng5 Bf7=) 9...c6 (9...h6 10.d4 e4 11.Nh4=) 10.Ng5+= Bf7 11.Nf7 Rf7 12.d3 Qf8 13.Nd2 (13.Nc3 Re8+=) 13...Kh8 (13...d5 14.a3=) 14.a4 f4 (14...d5 15.b5=) 15.ef4+/- ef4 16.Ne4 (16.Nf3 Ne8+/-) 16...Ne4+= 17.de4 Ne5 18.f3 (18.Bh5 g6 19.Be2 Bf6+=) 18...Bf6= 19.Rfd1 Rd8 20.Rac1 Qe7 21.c5 dc5?? (21...Rff8 22.cd6 Rd6 23.Rd6 Qd6 24.Rd1=) 22.Rc5?? (better 22.Rd8 Qd8 23.Be5+-) 22...Rff8 23.Rcc1 Ng6 24.Ba3 Qc7 25.b5 Nh4?? (better 25...Rfe8=) 26.Bf8+- Rf8 27.bc6 bc6 28.Qc4 Rc8 29.Qe6 Qb6 (29...Ng6 30.Bb5 Ne5 31.Bc6+-) 30.Kh2 (30.Kf1 Qb8+-) 30...Rf8 31.Qc6?? (better 31.Qd6 Rc8 32.Qf4+-) 31...Qf2=+ 32.Bf1?? (better 32.Rg1 Qe2 33.Kh1=+) 32...Nf3 33.Kh1 Qg1 0-1. dannysmet (2040) - SKP101 (2025), Rated Blitz game, lichess.org, 2021.

6.Be2 f6 7.0-0 c6 8.d4+= ed4 9.Nd4+/- Bf7 10.Nf5+- Qc7 11.Ng7 (11.Ng7 Kf8 12.Nf5+-) 1–0. pcmvr (2560) – veera (2100), net–chess.com, 2006.

6.Be2 Ngf6 7.Qc2 0-0 8.0-0 h6 9.a4 e4 10.Nd4 Ne5 (10...c5 11.bc5 Nc5= (worse 11...dc5 12.Ne6 fe6 13.Nc3+/-)) 11.Ne6+/- fe6 12.Nc3 c6 (12...Nc6!? 13.b5 Nb4+/-) 13.Ne4+/- Qb6? (13...a5 14.Nf6 Bf6 15.d4+-) 14.Nf6 (better 14.c5!? Qd8 15.cd6 Bd6+-) 14...Bf6 15.d4 Ng6 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Nc3 Nb6 7.Qb3= a5 8.ba5 Ra5 9.d4 Nh6 10.de5 de5 11.Nb5 c6 12.Rd1 Nd7 13.Nd6 =.

6.Nc3 g6 7.d4+= Bg7 8.d5 Bf7 9.Be2 h6 10.e4 Ne7 11.Qc2 0-0 12.0-0 f4 13.Nd2 g5 14.Rac1 h5 15.c5 g4 16.f3 Ng6 17.fg4+- Nh4 18.Nd1 Qg5 19.Nf2 Nf6 20.Qd1 hg4+/- 21.Bg4 Bh5 22.Nf3+- Nf3 23.Bf3 Bh6 24.Rc3 Rf7 25.Bh5 Nh5 26.Qf3 Rg7 27.cd6 cd6 28.Rfc1 Qh4 29.Rc7 Rg6 30.Rb7 Rf8 31.Rcc7 Rg3 32.hg3 fg3 33.Qg4 Bg5 34.Qh4 Bh4+- 35.Nh3 (35.Nh3 Bd8 36.Rh7 Bb6 37.Rb6 Kh7 38.Rd6+-) 1–0. Lapshun,Yury (2430) – Reeder,Andrew (2145), 31st World Open, Philadelphia USA (6), 2003.

6.d3 h6 7.Be2 Ngf6 8.Nh4 g5 9.Ng6 Rg8 10.Nf8 Kf8 11.h3 Qe7 12.Nc3 Qf7 (12...Ke8 13.Bf3+=) 13.Nb5 Nb8 14.Qc2 a6 15.Nc3 Nc6 16.a3 Ke7 17.Bf3 Rab8 18.b5 Nd8 19.a4 a5 20.Ba3 b6 21.0-0-0 (21.d4 Ke8+=) 21...Nb7 22.Nd5 Kd8 23.Nf6 Qf6 24.Bb2 Qf7 25.Be2 Re8 26.d4 e4 27.Qc3 Bd7 28.Ba3 Qf6 29.Bb2 f4 30.Bh5 Rg8 31.f3 Be8 32.Be8 Re8 33.fe4 Re4 34.Rhf1 Kd7 35.Qd3 Rbe8 36.ef4 gf4 37.c5 Nd8 38.cb6 cb6 39.d5 Qg5–/+ 40.Bc3 Nb7 41.Qc2 Nc5 42.Rf3 Na4 43.Kb1 Nc5 44.Bd2 a4 45.g3 Qd5 46.Bf4 Re1 47.Rf1 Qd1 48.Qd1 Rd1 49.Rd1 Re6 50.Kb2 Rg6 51.h4 Ne4 52.Rd3 Re6 53.Ka3 Ke7 54.Rd5 Ng3!–/+ 55.Rd3? Ne4 56.h5 Nc5 57.Rg3 Nd7 58.Rg7–/+ Ke8 59.Rh7 d5 60.Bh6 d4 61.Rh8 Ke7 62.Bg5 Nf6 63.h6 Kf7 64.Rd8 Kg6 65.Bf6 Rf6 66.Rd4 Kh6 67.Ka4 Kg5 68.Rc4 ½–½. Bidzinski,Leslaw – Gawiec,Konrad, Zlota Wieza Pultusk Poland, 2008.

6.d4 d5!? 7.cd5 Bd5 (7...Bb4? 8.Bc3 Bc3 9.Nc3+-) 8.de5 Bb4 9.Bc3 Bc3 10.Nc3 Bc6+= (10...Be4 11.Nd4+=) 11.Bb5 +=.

6.d4 Ngf6 7.Be2 Be7 8.0-0 h6 9.Qb3 e4 10.Nfd2 (10.Nh4 d5+=) 10...0-0 11.Nc3 c6 12.a4 d5 13.b5 Kh7 14.Ba3 Ba3 15.Qa3 a6 (15...Rc8 16.c5+=) 16.Qd6 (16.bc6 bc6 17.Qd6 Bg8+/-) 16...Re8 (16...Ne8 17.Qg3+=) 17.bc6+/- bc6 18.Qc6 dc4 19.d5?? (better 19.Rfc1+/-) 19...Ne5-+ 20.Qc5 Bd5 (better 20...Nd5!? 21.Nd5 Qd5-+) 21.Nd5-/+ Qd5 22.Qd5 Nd5 23.Bc4 Nc4 24.Nc4 Rec8 (24...Red8 25.Rfd1=+) 25.Nd6= Rf8 26.Rfd1 Nc3 27.Rd4?? (better 27.Rd2=) 27...Ne2-+ 28.Kf1 Nd4 29.ed4 Rad8 30.Nc4 Rd4 31.Ne5 (31.Nb6 f4 32.Ke1 f3-+) 31...Rfd8 (31...Rc8 32.Ra2-+) 32.Ke2 (32.Nc6 Rd1 33.Rd1 Rd1 34.Ke2 Ra1-+) 32...Rd2 33.Ke3 R8d5 34.f4 (34.Rc1 Ra2 (34...Re5?! 35.Kd2 Re6 36.Ke3-/+) 35.f4 Rdd2-+) 34...Rg2 35.Rc1 (35.h4-+) 35…Rh2 (35...Rh2 36.Rc4 Rdd2 37.Re4 Rde2 38.Kd4 Re4 39.Kc5 Ra4-+; 35...Rdd2 36.Re1 Rh2 37.a5 h5 38.Rd1 Rhe2) 0-1. jhonores (2175) - coma2tapelle (2300), Rated Blitz game, lichess.org, 2020.

6.Be2 Be7 7.d4 Bf6 8.de5 de5 (8...Ne5 9.Ne5 (9.Nd4 Bc4 10.f4 Be2 11.Qe2 Nc6 12.Nf5 Qd7 13.e4 Nb4 14.0-0=) 9...de5 10.Nc3 Ne7 11.0-0 0-0 12.Qb3 c6 13.Rfd1 Qc7 14.Rd2=) 9.0-0 (9.Qa4 a5 10.0-0 ab4 11.Qb4 Qe7 12.a3 Qb4 13.ab4 Ra1 14.Ba1=; 9.Nc3 Ne7 10.0-0 a5 11.b5 0-0 12.Nd5 Bd5 13.cd5 e4 14.Nd4=; 9.a3 Ne7 10.0-0 0-0 11.Nc3 Nb6 12.Qc2 Qc8 13.Na4 Na4 14.Qa4=) 9...Nh6 (9...Ne7 10.Qa4 a5 11.Rd1 ab4 12.Qb4 Qc8 13.Qb5 Nc6 14.Nc3=) 10.Nc3 (10.Qa4 0-0 11.Rd1 Qe7 12.Qb5 Nf7 13.Qb7 c5 14.Bc3=) 10...c6 (10...a5 11.a3 0-0 12.Nd5 Ng4 13.Qc2 c5 14.e4+=) 11.b5 (11.Qb3 0-0 12.Rad1 Qc7 13.Rd2 Nb6 14.Na4=) 11...0-0 (11...Qb6 12.Rb1 Rd8 13.bc6 Qc6 14.Nd5=) 12.bc6 bc6 13.Qd6 Qe7 (13...Re8 14.Qc6+=) 14.Rad1 (14.Qc6+=) 14...Rac8 15.Na4 Nf7 16.Qe7 Be7 17.a3 Bf6 18.Rd2 Nb6 19.Nb6 ab6 20.Rfd1 Rfe8 21.h3 Kf8 22.a4 c5 23.Bc3 Ke7 (better is 23...e4!? 24.Bf6 ef3 25.Bf3 gf6-+) 24.Rb2= Ra8 25.Ra1 Reb8 26.Nd2 Nd6 27.f4 e4 28.Bf6 Kf6 29.g4 g6 30.Kf2 Bd7 31.g5 Ke7 32.a5 Kd8 33.Rbb1 Nc8 34.h4 Kc7 35.ab6 Nb6 36.Nb3 Na4 37.Nd2 Rb1 38.Nb1 Rb8 39.Bd1 Nb2 40.Ra7 Rb7 41.Rb7 Kb7 42.Be2 Be6 43.Na3 Kb6 44.Ke1 Ka5 45.Kd2 Kb4 46.Nb5 Bc4 47.Nd6? Be2 48.Ke2 Kb3 49.h5 c4 (49...c4 50.hg6 hg6 51.Nf5 gf5-+) 0–1. Zerebecki,Dawid (1675) – Ludwinski,Daniel, Kowalewo Pomorskie Poland, 2010.

6.Be2 Ngf6 7.0-0 h6 8.d4 e4 9.d5 Bg8? 10.Nd4 Bh7 11.Ne6+- Qc8 12.Nc3 a6 13.Qa4 Kf7 14.f3 Be7 15.fe4 fe4 16.Qc2 Re8? 17.Ne4 Kg8 18.Bd3 Ng4 19.Bg7 Nge5 20.Be5 de5 21.Nf6! Bf6 22.Bh7 Kf7 23.Qg6 Ke7 24.Rf6! Nf6 25.Qg7 Kd6 26.Qf6 (26.Qf6 c5 27.bc5 Qc5 28.Nc5 Kc5 29.Rb1 Re6 30.Qe6 Kc4 31.d6 Kc5 32.Qe5 Kc6 33.Rc1 Kd7 34.Qe7#) 1–0. Nemeth,Laszlo (2060) – Vajda,Ildiko, Gyongyos Matra Cup, 2003.

6.Be2 Ngf6 7.d3 Be7 8.Nbd2 h6 9.0-0 0-0 10.a3 Nh7 11.Rc1 Bf6 12.Qc2 f4 13.ef4 ef4 14.Ne4 Bb2 15.Qb2 Ndf6 16.Rfe1 Ne4 17.de4 Qf6 18.Qf6 Nf6 19.e5 de5 20.Ne5 Rad8 (20...g5 21.Bf3 Rfb8 22.Nc6+/-) 21.Ng6 Rfe8 22.Nf4 Bf7 23.c5 Rd2 24.Bf1 Ng4 25.Re8 Be8 26.f3 Ne3?? (better is 26...Nf6+/-) 27.Re1+- Ng2 28.Ng2 Bc6 29.Re3 Rd1 30.Ne1 g5 31.Bc4 Kg7 32.Kf1 Kf6 33.Bb3 Rd2 34.Re2 Rd3?? 35.Nd3+- Bf3 36.Rf2 g4 37.Bd1 Ke6 38.Bf3 gf3 39.Rf3 Kd5 40.Ke2 Kc4 41.Nf4 a5 42.ba5 Kc5 43.Ne6 Kc6 44.Rc3 Kd6 45.Nc7 h5 46.Kd3 h4 47.h3 Kd7 48.Nb5 Ke6 49.Nd4 Kd5 50.Nf5 (50.Nf5 Ke5 51.Nh4+-) 1–0. Fournier,Frederic (1645) – Torrosus (1650), Active, 2007.

7.Nfd2 Ngf6 8.Nc3 c6 9.Rc1 a6 10.a4 Be7 11.g3 0-0=+ 12.c5 dc5 13.bc5 b6 14.cb6 Nb6 15.Ncb1 Qd7 16.Ba3 Rfc8 17.Be2 Ba3 18.Na3 c5 19.a5 Na4 20.dc5 Nc5 21.Ndc4 Qc7 22.0-0 Rd8 23.Qc2 Nd3 24.Nb6 Qe7 25.Ra1 Ra7 26.Rfd1 Rc7 27.Qa4 Rc3 28.Nac4 Bc4 29.Nc4=+ Qc5 30.Nb2 Qc7 31.Rd2= Rc1 32.Rc1 Qc1 33.Qd1 Qc3 34.Nd3+= ed3 35.Rd3+/- Rd3 36.Qd3 Qa5 37.Qa6 Qa6 38.Ba6 Kf7 39.Bc8 g6 40.Kg2 Ne4 41.h4 h5 42.Bb7 Nc5 43.Bd5 Kf6 44.Bc6 Nd3 45.Be8 ½–½. Wilk,K – Bylica,M, Augustow Poland, 1996.

7.Nfd2 Ngf6 8.Nc3 Be7 9.Qb3 0-0 (9...a5 10.b5=) 10.Be2 c6 (10...a5 11.b5=) 11.a4 (11.0-0 Qc7=) 11...d5 (11...a5 12.0-0=) 12.b5 Qc7 13.Ba3 (13.Rc1 Rfc8=) 13...Ba3 14.Ra3 f4 (14...Rac8 15.0-0=) 15.0-0 Ng4?? (better 15...Rae8=) 16.Bg4+- (16.cd5?! f3 17.d6 Bb3 (worse 17...Qd6 18.Qe6 Qe6 19.Bc4 Qc4 20.Nc4+-) 18.dc7 fe2 19.Ne2 Bd5=) 16...Bg4 17.cd5 Kh8 18.ef4 (18.dc6 bc6 19.ef4 Nf6 20.Nce4 Ne4 21.Ne4 Qf4+-) 18...Qf4 19.Nce4 Be2? (19...Nf6 20.f3 Ne4 21.Ne4 Bf5+-) 20.Re1 cd5 21.Qd5 (21.Re2?! de4 22.Qe3 Qe3 23.Rae3 Nb6+-) 21...Nb6 (21...Nf6 22.Qb7 Ne4 23.Ne4+- (23.Re2 Nd2 24.Rae3 Qd4=+)) 22.Qb7 Bh5 (22...Rf7 23.Qa6 Bg4 24.h3+-) 23.a5 Rab8 (23...Rf7 24.Qc6 Rc8 25.Qe6+-) 24.Qa7 (24.ab6? Rb7 25.ba7 Ra8-+) 24...Nd5 25.b6 Bg6 (25...Rf7 26.Qa6 Re7+-) 26.Rf3 Qg4 27.Rf8 Rf8 28.b7 Qf4 29.a6 Nc3 30.g3 Qf7 31.b8Q Rb8 32.Qb8 (32.Qb8 Qe8 33.a7 Bf7 34.Qe8 Be8 35.a8Q Ne2 36.Re2 g5 37.Qe8 Kg7 38.Qe7 Kg6 39.Qf6 Kh5 40.Qg5) 1–0. Pierre – Gargannyi, internet, 2020.

7.Nfd2 Ngf6 8.d5 Bf7 9.Nb3 Be7 (9...c5 10.a3=) 10.Nd4+= g6 11.Be2 0-0 12.0-0 Ne5 13.Nd2 a5 14.a3 ab4 15.ab4 Ra1 16.Qa1 Qa8 17.Nb5 (17.Rd1 c6 18.dc6 bc6+=) 17...Qa1 (17...c6 18.Be5 Qa1 19.Ra1 de5 20.d6=+) 18.Ra1+= c6 19.dc6 bc6 20.Na7 Nfd7 21.b5 cb5 22.cb5 Bd5 23.Rc1 Bd8 (23...Ra8 24.Rc8 Rc8 25.Nc8=) 24.Nc6 (24.Nc8 Kf7+/-) 24...Nc6 25.bc6 (worse 25.Rc6 Bc6 26.bc6 Ne5-/+) 25...Nc5 26.Nc4 (26.Bb5 Bc7 27.Bd4 Rb8=) 26...Bc7= 27.Ba3 Bc6 28.Nd6 Bd6 29.Bc5 Bc5 30.Rc5 Be8 31.Rc7 Bf7 32.Bc4 (32.f3 Ra8=) 32...Bc4 33.Rc4 h5 34.h4 Rd8 35.Kh2 Kf7 36.Kg3 Rd6 37.Rc2 (37.f3 ef3 38.gf3 Rd1=) 37...Kf6 38.Kf4 Rb6 39.f3 ef3 40.gf3 Rb4 41.e4 fe4 42.fe4 Rb6 (42...Rb3 43.e5 Ke6 44.Rc6 Kf7 45.Kg5 Rg3 46.Kh6=) 43.Rc5 White intends e5 43...Re6 (43...Rb2 44.Rc6 Kg7 45.Rc7 Kh6 46.Rc1=) 44.Rd5 (44.e5 Ke7+=) 44...Kg7 (44...Ra6 45.e5 Ke6 46.Rd4=) 45.e5+/- Kf7 46.Kg5 Ke7 47.Ra5 Kf7. Mely (2225) - D11j22 (2220), ChessWorld.net, 2016.

7.Nfd2 Ngf6 8.d5 Bf7 9.Be2 Be7 10.Nb3 0-0 11.Nd4 Ne5 (11...g6 12.0-0+=) 12.Nf5 Qd7 13.Ne7 Qe7 14.0-0 Rae8 15.Nd2 Bg6 16.Be5 (16.Bd4 a6+/-) 16...Qe5 17.Nb3 Qg5 18.Nd4 Bf7 19.Rb1 h5 20.Qa4 a6 21.Qa5 Re7 22.Rfc1 Ng4 (22...h4 23.h3+/-) 23.Bg4+- Qg4 24.Rc2 Re5? (better 24...Ra8+/-) 25.Qc7+- Rg5 26.g3 Rg6 (26...b5 27.Qd6 Rg6 28.Qc5 bc4 29.Nc6+-) 27.Qb7 h4 28.Qa6 hg3 29.fg3 (29.hg3 Qh3 30.Nf5 Qf5-+) 29...Rh6 (29...Rf6 30.b5 Qg5 31.Qa3+-) 30.b5 (30.Rf1 Qg5 31.Rcf2 Kh7+-) 30...Bh5 (30...Qg5 31.Rf2 Rf6 32.Rf6 Qe3 33.Rf2 Qd4 34.Qd6 e3+-) 31.b6 Qh3 32.b7 Bf3 (32...Rhf6 33.c5 dc5 34.Ne6+-) 33.b8Q Qg3 (33...Rb8 34.Rb8 Kh7+-) 34.hg3 Rh1 35.Kf2 Rh2 36.Ke1 Rh1 37.Kd2 Rh2 38.Kc3 (38.Kc3 Rg2 39.Qf8 Kh7 40.Rh1 Rh2 41.Rch2 Bh5 42.Rh5 Kg6 43.Qad6) 1-0. PEREIRA – Whitak, internet, 2021.

7.d5+= ef3 8.de6 Ne5 9.gf3 Qf6 10.Nc3 Qe6+= 11.Nd5 0-0-0 12.f4 Ng6 13.Be2 c6 14.Nc3 Nf6 15.Qa4 Kb8 16.0-0-0 d5 17.cd5+= Nd5 18.Bc4 Be7= 19.Nd5 cd5 20.Bb3 Bf6 21.Bd4 Rc8 22.Kb1 Bd4 23.Rd4 Rhd8 24.Rhd1 Ne7 25.b5 Rc5 26.Qb4 ½–½. Cafferty,Bernard (2205) – Pym,Thomas W (2100), Masters Hastings ENG, 2006.

7.d5 Bf7 8.Nd4 Be7 9.Ne6 Be6 10.Bg7 Bf6 11.de6 Bg7?? 12.Qh5 (12.Qh5 Ke7 13.Qf7#; 12.ed7 Qd7 13.Nd2 0-0-0=+ (< 13...Ba1 14.Qa1 Nf6 15.Qf6+/-)) 1–0. pierre – boko46, ChessWorld.net, 2006.

7.d5 Bf7 8.Nd4 Qf6 9.Nd2 Ne5 10.Qa4 Kd8 11.N2b3 (11.Ne6 Be6 12.de6 Qe6=) 11...Ne7 ( 11...Kc8!?+/-) 12.Qa5 g6 13.a3 Bg7 14.Rd1 b6 ( 14...Kc8!?+/-) 15.Qa6+- c5 16.dc6 (16.bc5 Nd3) 16...Rc8 17.Qa7 N7c6 (17...Ke8 18.Nb5 N7c6 19.Qb6 Kf8 20.Nd6 Rb8+-) 18.Qb6 Kd7 (18...Ke8 19.Nc6 Rc6 20.Qb5+-) 19.Nc6 Rc6 20.Qb7 Rc7 21.Nc5 Kd8 22.Be5 Qe5 (22...Rb7 23.Bf6 Bf6 24.Nb7 Ke7 25.Nd6 Bc3 26.Ke2+-) 23.Qb8 Rc8 (23...Ke7 24.Qc7 Ke8 25.Qd7 Kf8 26.Qd8 Qe8 27.Rd6 Bc3 28.Kd1 Kg7 29.Qe8 Re8+-) 24.Rd6 Ke7 25.Qb7 Kd6 26.Qd7 (26.Qf7 Rc7 27.Qd5 Qd5 28.cd5 Ra7=+) 1–0. MT – katinka (1625), ICC, 2004.

6.d4 ed4 7.Nd4 Ngf6 8.Ne6 fe6 9.Bd3 Bg7 10.Qc2 0-0 11.0-0 Ne5 12.Be5+= de5 13.Nc3 Qd6 14.a3 e4 15.Be2 Rad8 16.Nb5 Qd7 17.Rad1 Qe7 18.Rd8 Rd8 19.Rd1 a6 20.Rd8 Qd8 21.Nc3 Qd7 22.Ne4 Ne4 23.Qe4 Qa4?? 24.Qe6 Kf8 25.Qc8 Kf7 26.Qc7 Kf8 27.Qb7 Qa3 28.c5 Kg8 29.c6 Be5 30.c7 Bc7 31.Qc7 Qb4 32.Qc4 Qc4 33.Bc4 (33.Bc4 Kg7 34.Ba6+-) 1–0. Labahn,Wolfgang – Kroger,G, Espelkamp, 1980.

6.d4 e4? 7.d5+- Bf5 (7...ef3 8.Bh8 fg2 9.Bg2+-) 8.Bh8 f6 (8...ef3 9.gf3 Ne5 10.Be5 de5+-) 9.Nd4 Ne5 (9...Nh6 10.Nd2 Kf7 11.h3+-) 10.Nf5 gf5 11.Qh5 Nf7 12.Qh7 Ngh6 (12...Nh8 13.Qg8 Nf7 14.Be2+-) 13.Qg6 Be7 (13...Ng4 14.Qf5 Nh8 15.Qg4+-) 14.Bg7 Ng8 (14...Bf8 15.Bf6 Be7 16.Bd4+-) 15.Qh7 Kd7 16.Qf5 Ke8 17.c5 Qd7 18.Qh7 Nfh6 19.Bh6 Nh6 20.Qh6 dc5 21.Qh8 Bf8 22.Nc3 cb4 23.Bb5 c6 24.Ne4 Qg7 25.dc6 (better 25.Qh5 Ke7 26.dc6+-) 25...Qh8 26.cb7 Kf7 27.ba8Q b3 28.Be8 Kg7 29.Qa7 Kh6 30.Qf7 Bb4 31.Kf1 b2 (31...Qh7 32.Qf6 Qg6 33.Qg6) 32.Qg6 1–0. Leonco – Cinies, internet corr, 2018.

6.d4 f6 7.Nbd2 Bg7 8.Qc2 c6 9.Bd3 Ne7 10.0-0 0-0 11.Rfe1 f5 12.Ng5 Bf7 13.Nf7 Rf7 14.de5 Ne5 15.Be2 Qc7 16.Nf3 d5 17.Ng5+/- Rf6 18.cd5 Nd5 19.f4 Ne3? 20.Qb3+- Nd5 21.Be5 Rd6 22.Kh1 h6 23.Ne6! Re6 24.Bc7 Ba1 25.Ra1 Re2 26.h3?? Rae8? 27.Be5+- Kh7 28.Rd1 g5 29.Rd5 cd5 30.Qd5 Re7 31.Qd8 (31.Qd8 R7e5 32.fe5+-) 1–0. Bessat,Remy (2005) – Labroche,Jerome (1890), Champagne–chT, 2005.

6.d4 Ngf6 7.Nbd2 ed4 8.Nd4 Bg7 9.Be2 0-0 10.0-0 c5 11.bc5 =.

6.Be2 Bg7 7.0-0 Ne7 8.Nc3 h6 9.d4 0-0 10.d5 Bf5 11.e4 Bg4 12.h3 Bf3 13.Bf3 f5 14.g3 fe4= 15.Ne4 Nf5 16.c5 Nf6 17.cd6 cd6 18.Qd3 Ne4 19.Be4 Qg5 0–1. marcosramospg – lga (2090), net–chess.com, 2010.

6.Be2 Bg7 7.d3 Ne7 8.0-0 0-0 9.Nbd2 f6 10.e4 a6 11.a3 b6 12.d4 ed4 13.Bd4 c5 14.Bc5?? (better is 14.Be3+=) 14…dc5-+ 0–1. Fournier,Frederic (1945) – garazh2 (1880), Active (5/0), 2005.

6.Be2 Bg7 7.d3 Nh6 8.Nbd2 Nf5 9.Qc2 h6 (9...a5 10.b5=) 10.d4 ed4 11.Nd4 Nd4 ½–½. Thalhammer,Klaus (1890) – Frank,Jeremias (1900), 15th International Schach–Open Neumarkt, 2016.

5.a4 f5 6.b5 Nf6 7.Nc3 Nbd7 8.Nf3 0-0 (8...Ne4!?=) 9.Ng5+= Bf7 10.Nf7 Rf7 11.Be2 Kh8 12.0-0 Qf8 13.Nd5 Nd5 14.cd5 Nf6 15.f4 (15.Qb3+=) 15...Ne4 (better 15...ef4!? 16.ef4 Re8+=) 16.fe5+/- de5 17.Be5 Bd6 18.Bd6 Qd6 19.Qc2 Rf6 (19...Qd5? 20.Bc4 Qd2 21.Qd2 Nd2 22.Bf7 Nf1 23.Rf1+-) 20.Rac1 Rh6? (better 20...Qd5 21.d3 Nd6+/-) 21.Qc7+- Qc6?? (21...Qd5 22.Qc8! Qg8 23.Qg8 Kg8 24.Rf5 Nd2+-) 22.dc6 (22.dc6 bc6 23.Rc6 Rc6 24.Qc6+-) 1-0. BeepBeepImAJeep (2815) - RoadToN00b (1885), lichess.org, 2016.

5.b5 f5 6.Nf3 Nf6 7.d4 e4 8.Nfd2 0-0 9.Be2 c6 10.Nc3 cb5 11.cb5 Nbd7 12.0-0 Nb6 13.a4 Rc8 14.Rc1 d5 15.Nb3 Nc4=+ 16.Bc4 Rc4 17.Nd2 Rc8 18.Qb3 Qd6 19.Ndb1 Qb8 20.Ba3 Bd6 21.Bd6= Qd6 22.Qa3 Qd7 23.Na2 Qf7 24.Rc8 Rc8 25.Rc1 Rc1 26.Qc1 Qd7 27.Nd2 Ne8 28.Nb3 Nd6 29.Nc5+/- Qc8 30.Ne6 Qe6 31.Qc5 Nc8 32.Nc3 b6 33.Qd5 Qd5+/- 34.Nd5 Kf7 35.Nb4 Ke6 36.Kf1 Kd6 37.Ke2 Ne7 38.Kd2 g5 39.Kc3 h5 40.Kc4 h4 41.d5 g4 42.Kd4 h3 43.g3 Nc8 44.Nc6 Kc7 45.Ke5 Nd6 46.Ke6 Nc8 47.Kf5 Nd6 48.Kg4 (48.Kg4 Nb7 49.f4+-) 1–0. Mueller,Ernst (1635) – Wuergler,Hans Ulrich (1865), 04 sen. Laax SUI, 2005.

5.b5 Nf6 6.d4 Nbd7 7.Nd2 =+.

5.Nc3 a6 6.Nf3 Bg4 (6...Nf6 7.Be2=) 7.Be2 Bf3 (7...Nf6!?=) 8.Bf3+- (worse 8.gf3 Nf6=) 8...c6 9.Qb3 (9.d4 Nf6+=) 9...Nf6+= 10.b5 (10.0-0+=) 10...Nfd7 (10...ab5 11.cb5 d5 12.bc6 bc6 13.0-0=) 11.d4 (better 11.bc6!? bc6 12.Qb7+-) 11...ed4 12.ed4 0-0 (12...ab5 13.cb5 0-0 14.bc6 bc6 15.d5+=) 13.0-0 (13.bc6 bc6 14.0-0 Ra7+-) 13...Qb6 (13...ab5!? 14.cb5 d5=) 14.Na4 (14.bc6 bc6 15.Rfe1 Re8+-) 14...Qc7 15.b6 White prepares the advance c5 15...Qd8 16.Rad1 (16.Rfe1 Re8+-) 16...Nf6 (16...Bg5 17.Rfe1+-) 17.c5 (17.d5 cd5 18.Bd5 Nd5 19.Rd5 Qc8+-) 17...d5 18.Rfe1 Nbd7 19.Bc1 (19.Qd3 Re8+-) 19...h6 (19...Re8 20.Nc3+=) 20.Bf4+- Nh7?? (20...Re8 21.Re2+-) 21.Rd2 (better 21.Bc7 Qe8 22.Bd6 Bd6 23.Re8 (23.cd6?! Qb8+=) 23...Bh2 24.Kh2 Rfe8 25.Bd5 cd5 26.Qd5+-) 21...Bg5+= 22.Bg5 Ng5 23.Rde2 (23.Qd3 Qf6+=) 23...Nf6 (23...Ne6 24.Qd1=) 24.h3 (24.Qd3 Qd7+=) 24...g6 (24...Qd7 25.Qd3+=) 25.Re7 (25.Qd3 Re8+=) 25...Rb8 (25...Nfe4 26.Rb7 Nd2 27.Qe3 Ndf3 28.gf3 Nh3 29.Kf1-+) 26.Qd3 (26.R7e5!?+=) 26...Nfe4= 27.R7e4 (better 27.Re5!?=) 27...de4–/+ 28.Be4 Ne4 (28...Re8 29.Re2–/+) 29.Qe4 (better 29.Re4!? Re8 30.Nc3=) 29...Re8–/+ 30.Qe8 Qe8 31.Re8 Re8 32.f3? (32.Nc3 Re1 33.Kh2 f5–/+) 32...Re2 (better 32...Rd8!?-+) 33.Nc3 Rc2 (better 33...Rd2!? 34.d5 cd5–/+) 34.Ne4=+ Ra2 35.Nd6 Rd2 (35...Ra4!?=+) 36.Nb7+= Rd4 (36...Rd4 37.Na5 Rb4+=). jaddwarrior (2030) – georgefosters (2770), ChessWorld.net, 2012.

5.Nc3 c6 6.Nf3 Nf6 7.Be2 h6 8.0-0 0-0 9.Qc2 d5 10.cd5 Nd5 11.Nd5 (11.Ne5?! Nb4 12.Qc1 Nd7=) 11...Bd5 (< 11...Qd5 12.Be5 (< 12.Ne5 Bb4 13.d4 Nd7+=) 12...Rd8 13.d4+/-) 12.Be5 Nd7 13.Bc3 Bd6 14.e4 Be6 15.Qb2 f6 16.Rfe1 Qc7 17.d4 Rae8 18.a4 Nb6 19.b5 Nc8 20.Rac1 cb5 21.Bb5 Bd7 22.Bd2 Qd8 23.Bc4 Kh7 24.Bd3 Kg8 25.Qb7 Re7 26.e5 fe5 27.de5 Bg4 28.Qd5 Be6 29.Qe4 (29.ed6?! Bd5 30.de7 Ne7+=) 29...Bf5 30.Qc4 (30.ed6?! Re4 (30...Be4? 31.de7 Ne7 32.Re4 Qd3 33.Re7 Rf3 34.gf3 Qd2 35.Rcc7+-) 31.Be4 Be4 32.Re4 Nd6=) 30...Be6 31.ed6 Nd6 (31...Bc4 32.de7 (32.Bc4?! Ref7+-) 32...Ne7 33.Bc4 (33.Rc4 Qd3 34.Rd4 Qg6+/-) 33...Kh7 34.Bb4+-) 32.Qd4 Bf5 1–0. Schirmer,Michael (2145) – Brunner,Hermann (1670), D0194 DESC, 2002.

5.c5 dc5 6.bc5 Bc5 7.Be5 Nf6 8.Qf3 Nc6 (8...Nbd7 9.Bf6 Qf6 10.Nc3=+) 9.Bf6 (9.Bb5 Bd5 10.Qg3 0-0 11.Bc7 Qe7=) 9...Qf6 10.Qf6 gf6 11.Bb5 Bd7 12.Nc3 0-0-0 13.Ne4 Be7 14.d4 Nb4 15.Bd7 Rd7 16.Rc1?? ( 16.Ke2=) 16...f5–/+ 17.Nc5 Bc5 18.Rc5 Nd3 19.Ke2 Nc5 20.dc5 Rhd8 21.Nf3 b6 22.cb6 ab6 23.Nd4 c5 24.Nf5 Rd2 25.Kf3 Rd1 26.Rd1–/+ Rd1 27.Ke4 Ra1 28.Nd6 Kc7 29.Nf7 Ra2 30.Kf3 b5 31.Ne5 c4 32.g4 Kd6 33.Ke4 c3 34.f4 c2 35.Nd3 Ra1 36.f5 c1Q 37.Nc1 Rc1 38.h4 Rh1 39.h5 Kc5 40.f6 Rf1 41.Ke5 b4 42.Ke6 b3 43.f7 b2 44.Ke7 b1Q 45.f8Q Qe4 46.Kd7 Kb5 47.Qf1+- Qc4 48.Qf5 Kb4 49.Qh7 Qb5 50.Ke6 Qc4 51.Ke5 Qc5 52.Kf4 Qc4 (53.Qe4 Kc5 54.Qc4 Kc4+-; 52...Qd6 53.Kf3 Qd1 54.Kg3 Qe1 55.Kf4 Qf2 56.Ke5 Qb2 57.Kf5 Qf2 58.Kg6 Qe3 59.Qb7 Ka5+-). revbodio – Falcon8, Live Game Caissa's Web, 2004.

5.d4 Nc6 6.d5 Nb4 7.de6 fe6 8.Qb3 d5? 9.a3 Nc6 10.Qb7 Na5 11.Qa6 Qb8 12.Be5 Nb3 13.Ra2 Nc5 14.Qc6 Kf7 15.Rb2 Qb2 16.Bb2 dc4 17.Qa8 1–0. Bonetti,Shane – guest539, ICC, 2002.

5.d4 ed4 6.ed4?! (6.Bd4 Nf6 7.Be2= (7.Nc3 Nc6 8.Nf3 0-0 9.Bd3 Nb4; 7.Nf3 Nc6 8.Nc3 0-0 9.b5 Nd4) 7...c5 8.bc5 dc5 9.Bb2 Qd1; 6.Ne2 de3 7.Bg7 Bf6 8.Bh8 Bh8 9.Nbc3 Bc3) 6...d5 (6...Nf6 7.Nf3 (7.Nc3 0-0 8.Nf3 d5 9.c5 Nc6) 7...0-0 8.Nc3 d5 9.c5 Nc6) 7.c5 (7.cd5 Bd5 8.Nc3 Nf6 9.Nf3 Nc6) 7...Nf6=+ 8.b5 (8.Nf3 0-0 9.Nc3 Nc6) 8...c6 (8...0-0 9.Nf3 a6) 9.Qa4?! (9.Nc3 0-0) 9...cb5? (9...0-0=+) 10.Bb5= Bd7 11.Nf3 a6 12.Nc3 Nc6 13.Bd3 0-0 14.0-0-0?! Na5 15.Qc2 Nc4 16.Na4 (16.Nd5!+-) 16...Ba4 17.Qa4 b5=+ 18.Qc2 g6 19.h4 Nh5 20.g4?! (20.g3=) 20...Nf4 21.g5 Qa5 22.Rhe1 Rae8 23.Ne5? (23.Bc3) 23...Qc7 (23...Ne5! 24.Re5 Qa2–/+) 24.c6?! (24.Bf1) 24...Rc8 25.Bc4 bc4 26.Nd7?? Nd3-+ 27.Rd3 cd3 28.Qa4 Qd7 0–1. Fehr – Schneidmadel.

5.d4 ed4 6.Bd4 Bf6 7.Nc3 Bd4 8.ed4 Nf6 9.d5= Bf5 10.Bd3 Bd3 11.Qd3 0-0 12.Nge2 Re8 13.0-0 c6 14.Rae1 cd5 15.cd5 Nbd7= 16.Nf4 Ne5 17.Qf5 Qe7 18.g4?? g6 19.Qg5 Nf3 20.Kh1 Ng5 21.Re7 Re7 22.Nb5 Rae8 23.Nd6 Rd8 24.Nc4 Nfe4 25.f3 Nf3 26.Rf3 Ng5 27.Rf1 Re4 28.Nd2 Rde8?? 29.Ne4+= Re4? 30.h4+- Nh3 31.Nh3 Rg4 32.Kh2 Rh4 33.Rd1 Rb4 34.d6 Rh4?? 35.Kg3 Rh3?? (35...Rh3 36.Kh3 h5+-; 35...Rc4+-). xtrachess – Gambit1, Live Game Caissa's Web, 2006.

5.d4 ed4 6.Bd4 Nf6 7.Be2 =.

5.d4 ed4 6.Nf3 de3 7.fe3 Bf6 8.Qd2 Bb2 9.Qb2 Qf6 10.Nc3 Nc6 –/+.

5.d4 Nd7 6.d5 Bf5 7.Nd2 Bg6 8.Be2 f5 9.Ngf3 Ngf6 (9...Nh6 10.0-0=) 10.0-0 (10.Nh4 a5+=) 10...0-0 (10...Ne4 11.Ne4 fe4 12.Nd2=) 11.Nh4 f4? ( 11...Qe8+=) 12.Ng6+- hg6 13.ef4 ef4 14.Nf3 Ne4 15.Qd3 (15.Nd4 Bf6 16.Ne6 Qe7 17.Bf6 Qf6 18.Nf8 Rf8+-) 15...Ndf6? (15...Bf6!? 16.Bf6 Nef6 17.Qg6 Qe8+-) 16.Nh4 (16.Nd4 Ng5 17.Qg6 f3+-) 16...Qe8 17.Bf3 Ng5 ( 17...Qf7+-) 18.Be2?? (18.Rfe1 Nf3 19.Nf3 Nd7+-) 18...Nge4 19.Rae1 Qf7 20.Bf3 g5?? ( 20...a5 21.Bf6 Bf6+-) 21.Be4 gh4 (21...Ne4 22.Qe4 Rae8+-) 22.Bg6 (22…Nd7 23.Bf7 Rf7 24.Qh3+-) 1–0. radica – Schnick, Live Game Caissa's Web, 2004.

5.d4 f6 6.Nf3 Nh6 7.d5 Bf7 8.e4 (8.a3 Nd7+=) 8...0-0 9.Bd3 Nd7 (9...a5 10.b5=) 10.Nbd2 (10.Nc3 a5 11.a3 ab4 12.ab4 Ra1 13.Qa1 c5+=) 10...c6 (10...a5 11.a3 Nb6=) 11.Nf1 (11.0-0!?+=) 11...cd5 (11...Qb6 12.Qd2 a5 13.ba5 Qa5 14.Bc3=+) 12.cd5 f5 (12...Qb6 13.a3 Ng4 14.Qe2=) 13.ef5= Nf6 (worse 13...Bd5 14.Ne3 Bf7 15.0-0+=) 14.Bc4 (14.Ng5 Nd5 15.Nf7 Nf7= (15...Kf7?? 16.Qb3 Qb6 17.Qd5 Ke8 18.Be5 Nf5 19.Rc1+-)) 14...Qb6 (14...Nf5!? 15.Ng3 Ng3 16.hg3 Qb6–/+) 15.Ne3=+ Qb4 16.Qd2 Qd2 17.Nd2 Nd7 (better 17...b5!? 18.Bb3 Nhg4=+) 18.Ne4= Nb6 (18...Rfc8 19.Ba3 Nf6 20.Nf6 gf6 21.Rc1+=) 19.Bb3+= Rac8 (19...Bh5!?+=) 20.0-0+- Be8 (better 20...Rc7+-) 21.g4 (21.Be5!? Nf5 22.Nf5 Rf5 23.Bd6+-) 21...Nf7 (21...Bb5 22.Be5 Bf1 23.Rf1=) 22.Ba3 (22.f4!? Nd7 23.g5+-) 22...Bb5= 23.Rfc1 Bd3 24.Nd2 (24.f3 Be4 25.fe4 Ng5=) 24...Ng5 (24...Bf6 25.Bb2=) 25.Kg2= Be4 (25...Ne4!? 26.Ndc4 Nc4 27.Bc4 Bc4 28.Rc4 Rc4 29.Nc4 Rc8=+) 26.f3+- Bd3 27.h4 Nf7 28.Kg3 h6 (28...Rc1 29.Rc1 Rc8 30.Rc8 Nc8 31.Nec4+-) 29.Bc4 (29.Bb4!?+-) 29...Nc4= 30.Ndc4 Bc4 (30...Rfe8!?=) 31.Nc4+- Rc7 32.Na5 Bd8 33.Bb4 Rd7 34.Rc2 Ba5 35.Ba5 b6 36.Bb4 (36.Bd2 Nd8+-) 36...Nd8 37.Rac1 Nb7 38.Rc7 Rfd8 39.R1c6 Nc5 40.g5 (better 40.Ba3+=) 40...h5?? (40...Rc7 41.Rc7 Na6 42.Rc4=) 41.g6 (better 41.Rd7 Nd7 42.Bd6+-) 41...Rc7= 42.Rc7 Na6 43.Rc4 Nb4 44.Rb4 Rc8 45.a4 (45.f4 Rc3 46.Kf2 Rc2 47.Kf3 Rc3 48.Ke2 ef4=) 45...Rc5=+ 46.Rb5 (46.f4 Rd5 47.Rb2 e4-+) 46...Kf8–/+ 47.Rc5?? (better 47.f4 Rc3 48.Kf2 ef4 49.Rb4–/+) 47...bc5-+ (47...dc5?? 48.d6 c4 49.f6 gf6 50.d7+-) 48.f4 ef4 49.Kf4 Ke7 50.a5 (50.Kg5 c4 51.f6 Kf8 52.fg7 Kg7-+) 50...Kf6 51.a6 c4 52.Ke4 c3 53.Kd3 c2 54.Kc2 Kf5 55.Kd3 Kg6 56.Kc4 Kf5 57.Kb5 g5 58.Kc6 gh4 59.Kb7 h3 0–1. Baudon,Sebastien (2015) – Bulsoev,Alexander (1805), 5th Korchnoy Memorial, 2017.

5.d4 Nf6 6.d5 Bd7 7.Nf3 c6 8.Be2 cd5 9.cd5 Qb6 10.Qb3 Bb5 11.Bc4 Bc4 12.Qc4 Nbd7 13.a3 0-0 14.0-0 Rac8 15.Qe2 Nd5–/+ 16.e4 Nf4 17.Qd2 Nf6 18.Nc3?? Rc4 19.Nd5 N6d5-+ 20.ed5 Rfc8 21.Rac1 Rc1 22.Rc1 Rc1 23.Bc1 Qc7 24.Kf1?? Qc4 25.Ke1 Ng2 26.Kd1 Nf4 27.Qe3 Qd3 28.Qd3 Nd3 29.Be3 b6 30.Kc2 Nf4 31.Bf4 ef4 32.Nd4 g5 33.h3 h5–/+ 34.Nc6 Bf6 35.Kd3–/+ Kg7 36.f3? Kg6 37.Ke4? h4 38.Na7 Kh5?? 39.Kf5 Be5 40.Nc8 g4?? 41.fg4+- Kh6 42.Ke4 Kg5 43.Nb6 f5 44.gf5 f3 45.Kf3 Kf5 46.a4 Bc3 47.b5 Ba5 48.Nc4 Bc7 49.a5 1–0. Trkn – Marcus, itsyourturn.com, 2000.

5.Be2 f5 6.Nf3 Bf6 7.0-0 Ne7 8.d4 e4 9.Nfd2 c6 10.Qc2 d5 (10...0-0 11.Nc3=) 11.c5 (11.Nc3 0-0=) 11...0-0= 12.a4 Qc7 13.f4 g5 14.g3 Nd7 15.Nc3 (15.Nb3 gf4 16.ef4 Rf7=) 15...gf4 16.gf4 Kh8 (16...Bh4 17.a5=) 17.Kh1 (17.b5 Rg8 18.Kh1 Rg6=) 17...Rg8 (17...Bh4 18.Qb3=) 18.Rg1 (18.b5 Bh4=) 18...Bh4 19.Raf1 (19.Nc4 Nf6 (19...dc4? 20.d5 Nf6 21.de6+-) 20.Ne5 Ng6=) 19...Rg1+= 20.Rg1? (better is 20.Kg1!? Nf6 21.Kh1+=) 20...Bf2–/+ 21.Nf1 (21.Rg3!?–/+) 21...Bg1-+ 22.Kg1 Rg8 23.Ng3 Nf6 24.Bd1 (24.Kh1 Ng6 25.b5 Nh4-+) 24...Qd8 (24...Ng6 25.Qf2-+) 25.Bc1 (25.b5 Qf8-+) 25...Qf8 26.Kh1 (26.b5 Qg7 27.Qg2 Ng6-+) 26...Qh6 27.Nf1 (27.Kg1 Qg7 28.Kh1 Ng4-+) 27...Qh3 28.Qf2 Ng6 29.Ne2 (29.Ng3-+) 29...Ng4 30.Qg2 Qg2 (30...Nh4 31.Qg3 Qf1 32.Ng1 Nf2 33.Qf2 Qf2 34.Bg4 Qg2) 31.Kg2-+ Nh4 32.Kh3 (32.Kg1 Nf3 33.Kg2 Ne3 34.Kh1 Nf1-+) 32...Nf3 (32...Nf2 33.Kh4 Rg4 34.Kh5 Kg7 35.Nc3 Bf7) 33.Kg2 (33.Nfg3 Nf2 34.Kg2 Nd1-+) 33...Ne3 34.Kf2 Nd1 0–1. Pfueller,Volker – Hiller,Bernd (1800), 6th Berlin–ch Seniors, 2010.

5.Nf3 Na6 6.b5 Nc5 7.d4 ed4 8.ed4 Ne4 9.Bd3 Ng5 10.0-0 b6? 11.Nbd2 Nh6? 12.d5+- Bg4? 13.Bg7 Rg8 14.Bh6 1–0. chessleon (2000) – kcollins (2025), net–chess.com, 2006.

5.Nf3 Qd7 6.d3 a6 7.Nbd2 Nf6 8.Be2 Nc6 9.a3 Na7 10.0-0 0-0 11.h3 b5 12.c5 dc5 13.Ne5+= Qc8 14.bc5 Bc5 15.Rc1 Bd6 16.Bf3 Rb8 17.Nc6 Nc6+= 18.Bc6 Bd5 19.Bd5 Nd5+= 20.Nb3 Qf5?? 21.e4+- Qf4 22.g3 Qc1?? 23.Qc1 Nb6 24.Qg5 f6 25.Qg4 1–0. coloplayah (1960) – vaidasmp (1795), net–chess.com, 2005.

5.Nf3 f6 6.Be2 b6 7.Qa4+/- c6 8.Nc3 b5? (better is 8...Nh6+/-) 9.cb5+- a6 (9...Qb6 10.d4 cb5 11.Bb5 (11.Qb5?! Qb5 12.Nb5 Na6+-; 11.Nb5?! Bd7 12.Qa5 Qa5 13.ba5 Kd8+-) 11...Kf7 12.d5+-) 10.bc6 Qb6 11.c7 Nc6 12.d4 ed4 (12...d5 13.de5 Kf8+-) 13.Nd4 d5 (13...Bd7 14.Bb5! Qc7 15.Bc6 Bc6 16.Nc6 Kf8+-) 14.Bb5 Bd7 15.Bc6 Bc6 16.Nc6 Bb4 17.Nb8 Kf8 18.c8Q 1–0. Janek – Bonnie, internet, 2016.

5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 Be7).

5.Nf3 h6 6.Nc3 Nf6 7.d4 e4 8.Nd2 d5 9.cd5 Bd5 (9...Nd5 10.a3=) 10.Nd5 (10.a3+=) 10...Nd5 (better 10...Qd5!? 11.a3 0-0+=) 11.a3+- (11.Ne4?! Bb4 12.Nd2 0-0=) 11...0-0 12.Ne4 c6 13.Bd3 b5 (13...a5 14.ba5 Qa5 15.Qd2+-) 14.0-0+- a5 15.ba5 Ra5 16.Ng3 (better 16.a4+-) 16...c5 (better 16...Re8+-) 17.dc5 Bc5 (17...Bf6 18.Bf6 Nf6 19.Qb1+-) 18.Nf5 Nf6 (18...f6 19.Qg4 Qc7 20.Be4 Ne3 21.fe3+-) 19.Ng7! Kg7 (19...b4 20.Nf5 Re8 21.Nh6 Kf8 22.ab4 Ra1 23.Ba1 Bb4+-) 20.Qg4 (20.Qg4 Kh8 21.Qe4+-) 1–0. michaelbuss (2775) – gila monster (1705), ChessWorld.net, 2011.

5.Nf3 h6 6.d4 ed4 7.Nd4+= Nf6 8.Nc3 0-0 9.Ne6 fe6 10.g3 Qd7 11.Bh3 c5 12.bc5+/- dc5 13.Qd7+- Nbd7 14.Be6 (14.Be6 Kh7 15.f4+-) 1–0. Woelfelschneider,Peter – Ulzenheimer, 2009.

5.Nf3 h6 6.Be2 (6.d4 d5 7.Ne5 Bb4 8.Bc3 Bd6+=) 6...Nd7 (6...Nf6 7.0-0=) 7.0-0 Ngf6 8.h3 (8.d4 0-0=) 8...0-0 9.d4 ed4 (9...e4 10.Nfd2=) 10.Nd4 Nb6 11.Ne6 fe6 12.Nd2 Qe8 13.Bg4 (13.Qb3 Na4=) 13...Qf7 ( 13...Ng4 14.Qg4 Qf7=) 14.Qf3?? ( 14.Bf3 d5 15.a3=) 14...h5-+ 15.Bf6 hg4 16.Qg4 Bf6 17.Rad1 Bc3 18.c5 Nd5 19.cd6? Bd2 20.Rd2 cd6 21.Qd4 Qf6 22.e4 Nf4 23.Qf6 gf6 24.Rd6–/+ Rad8 25.Rfd1 Rd6 26.Rd6 Rf7 27.f3? Rc7 28.Rd2–/+ e5 29.Kh2 Kf7 30.g3 Ne6 31.g4 Nd4-+ 32.Kg3 b5 33.h4 Rc2 34.Rd1? Ra2 35.g5 Ra3 36.Rf1 Rb3 37.Kg4 fg5 38.hg5 Rb4 39.f4 ef4 40.Rf4 Kg7 41.Rf1 a5 42.e5 a4 43.Rf6 a3 44.g6 a2 45.Kh5 a1Q 46.Rf7 Kg8 47.Rc7 Qh1 (48.Kg5 Ne6 49.Kf6 Nc7 50.Ke7 Rd4 51.Kf6 Qh4 52.Kf5 Qf4; 47...Ne6 48.Rc8 Kg7 49.Rc4 Qh1 50.Kg4 Qg2 51.Kh4 Rc4 52.Kh5 Qg6) 0–1. Melzig,Ernst – Goldinger,Josef, Wch Seniors Bad Liebenzell, 1996.

5.Nf3 Nh6 6.Be2 Nc6. ludger – geebs (2100), net–chess.com, 2005.

5.g3 Nf6 6.Bg2 c6 (6...Bc4?! 7.Bb7 Nbd7 8.Ba8 Qa8 9.f3+=) 7.Qb3 0-0 8.Ne2 Qc7 9.0-0 a5 10.a3 ab4 11.d3 ba3 12.Na3 Nbd7 13.Rab1 (13.f4 Nc5 14.Qc2 Rfe8–/+) 13...Rfb8 14.f4 Nc5 15.Qd1 Ng4 16.Nc2 Na4 17.f5 Bd7 18.e4 Qb6 19.Bd4 Qc7 20.Bf3 (20.Bb2 d5 21.ed5 cd5 22.Nf4 Nb2 23.Rb2 ef4 24.Qg4 dc4 25.dc4-+) 20...ed4 21.Bg4 c5 22.Na3 Bf6 23.Nb5 Bb5 24.cb5 (24.Rb5 Ra7–/+) 24...Nc3 25.b6 Qc6 (25...Nd1 26.bc7 Ne3 27.cb8R Rb8 28.Bf3 Nf1 29.Kf1+/-) 26.Nc3 dc3 27.Kh1 Ra3 28.Qc2 Rba8 29.Bf3 Be5 30.Bh5 Qa4 (30...Qa4 31.Bd1 Qd4-+) 0–1. Slupski,Mark – Tibbert,Peter H (1745), BCCA/C6/final (ENG), 2011.

6.d4 ed4 7.ed4 0-0 8.Nf3 c5 (better 8...d5 9.c5 Nc6=+) 9.bc5+/- dc5 10.d5 Bg4 11.Be2 Bf3 12.Bf3 Bd6 13.0-0 a6 14.a4 Nbd7 15.Qb3 b6 16.Rfe1 Qc7 17.g3 Rae8 18.Bg2 Re5 (18...Be5!?+=) 19.f4 Re1 20.Re1 Re8 21.Re8 Ne8 22.Ne4 Ndf6 23.Qc3 h6 24.Nf2 Bf8 25.Qe3 Qd6 26.Be5 Qe7 27.Qb3 Qd8 28.Qb2 Nd7 29.Ne4 Ne5 30.fe5 f5 (better 30...f6!?+/-) 31.Nf2+- b5? (better 31...g6 32.d6 Bd6 33.ed6 Qd6+-) 32.ab5 ab5 33.Qb5 Nc7 34.Qb6 Qc8 (34...Kh7+-) 35.d6 Ne6 (35...Bd6 36.Qd6 Kh7 37.Nd3+-) 36.Bd5 Kh8 (36...Kh7 37.Qa7 Bd6 38.ed6+-) 37.Nd3 (better 37.Qa7 Qe8 38.d7 Qd8 39.Be6 f4 40.gf4 g6+-) 37...Kh7 38.Nf4 Nf4 39.gf4 Qe8 40.Qc5 Qa4 41.Qd4 Qa5 42.Bf3 Qe1 (42...g5 43.c5 Qa3 44.Kg2 Qa2 45.Kg3 gf4 46.Kh3+-) 43.Kg2 g5 (43...Qb4 44.h4+-) 44.d7 g4 (44...Bc5 45.d8Q Bd4 46.Qe7 Kh8 47.Qf6 Kh7 48.Qf5 Kg7 49.Qd7 Kf8 50.Qd6 Kg7 51.Qd4 gf4 52.e6 Kg8 53.Qd8 Kh7 54.e7 Qe5 55.e8Q Qe8 56.Qe8 Kg7 57.Qe7 Kg6 58.h3 h5 59.Be4 Kh6 60.Qf6) 45.d8Q (45.Bg4 fg4 46.Qd3 Kg7 47.d8Q Qe5 48.fe5 h5 49.Qe8 g3 50.Qf5 gh2 51.Qef8) 45...gf3 46.Kf3 Qf1 47.Qf2 (47.Kg3 Qe1 48.Qf2 Qb4 49.Qd7 Kh8 50.Qf5 Qa3 51.Qf3 Qe7 52.Qf6 Qg7 53.Qg4 Kg8 54.Qgg6 h5 55.Qff7 Kh8 56.Qgg7 Bg7 57.Qh5 Bh6 58.Qh6 Kg8 59.Qf6 Kh7 60.e6 Kg8 61.e7 Kh7 62.e8N Kg8 63.Qg7) 47...Qh3 48.Ke2 Bg7 49.Qd3 Qh5 50.Kd2 Qf7 51.Qfd4 Qh5 52.c5 Qh2 53.Kc3 Qh5 54.c6 Qe8 (54...Bf8 55.c7 Qf7 56.c8Q Ba3 57.Qcf5 Kg8 58.Qg3 Qg7 59.Qd8 Bf8 60.Qdf8) 55.Qf5 Kh8 (55...Kg8 56.c7 Qf8 57.c8Q Qc8 58.Qc8 Bf8 59.Qd6 Kg7 60.Qcf8 Kh7 61.Qdh6) 56.Qdd7 Qf8 (56...Qa8 57.Qc8 Qc8 58.Qc8 Kh7 59.c7 Bf8 60.Qf8 Kg6 61.c8Q Kh5 62.Qe7 Kg6 63.Qg4) 57.Qf8 (57.Qf8 Bf8 58.c7 Kg8 59.c8Q h5 60.Qe7 h4 61.Qcf8) 1-0. Clydefrog (2200) - Hassan1969 (2145), Rated Classical game, lichess.org, 2016.

6.Nf3 0-0 7.Qc2 a5 8.b5=.

6.Nf3 0-0 7.Qc2 c6 8.a4 (8.d4 e4 9.Ne4 Ne4 10.Qe4 d5=) 8...Nbd7 9.Be2 Rc8 (9...d5 10.b5=+) 10.0-0 d5 11.Qb3 (11.Na2 c5 12.b5 e4=+) 11...a6 (11...e4 12.Ng5-/+) 12.d4 e4 13.Nd2 Bd6 14.f4 (14.c5 Bb8=) 14...ef3=+ 15.Nf3 (15.Nf3 dc4 Passed pawn; 15.Bf3 dc4 Passed pawn; 15.Rf3 Bg4 Decoy; 15.gf3 Bh3 Combination) 15...dc4-/+ 16.Bc4 Bc4 17.Qc4 b5 (17...Qe7!?-/+) 18.Qb3= Qe7 19.Rfe1 (better 19.e4!? Ne4 20.Rfe1=) 19...Bb4-/+ 20.ab5 ab5 21.Ra7 Bc3 (21...c5 22.Ne5-/+) 22.Bc3 Qe4 23.Bb4 Rfe8 24.Ng5 (24.Nd2 Qd5-/+) 24...Qg6 (24...Qd5 25.Qd5 cd5 26.Nf3-/+) 25.Nf3 h6 (25...c5 26.dc5 Nc5 27.Bc5 Rc5 28.Rb7-/+) 26.Bd6 Re6 27.Ne5 (27.Bf4 Rce8=+) 27...Ne5-/+ 28.Be5 Nd5 (28...Ng4 29.Bf4 Qe4-/+) 29.Rc1? (better 29.e4!? Nf6 30.Bf6 Qf6 31.e5=+) 29...Rce8 30.Ra6 (30.Re1 Qe4-+ (30...Re5?! 31.de5 Re5 32.Ra8 Kh7 33.Rd8-/+)) 30...b4 (30...Qe4 31.Re1-+) 31.Re1 (31.Rf1 Qe4 32.Rf3 c5 33.Re6 Re6-+ (33...fe6?! 34.Qa4 Re7 35.h3-/+)) 31...c5 (31...Qe4 32.Ra2-+) 32.Qd5? (better 32.Ra5 cd4 33.Rd5 Re5 34.Rd4-/+) 32...Ra6-+ 33.Qc5 (33.dc5 Qc6 34.Qc6 Rc6-+) 33...Qb6 (33...Qe4 34.Qc4 Rc6 35.Qb5-+) 34.Qb6 (34.Qc4 b3 35.Rb1 b2-+) 34...Rb6 35.Bd6 (35.Kf2-+) 35...b3 (better 35...Rd6 36.Rb1 Re3 37.Rb4 Re2-+) 36.Bc5 Rb5 37.e4 (37.Ba3 b2 38.Rb1 Re3 39.Rb2 Rb2 (39...Ra3?! 40.Rb5 Ra2 41.Rb8 Kh7 42.d5=) 40.Bb2 Rb3-+) 37...b2 38.Rb1 Re4 (better 38...Ra8 39.Kf2 Ra1 40.Rb2 Rb2 41.Kf3 Rf1 42.Kg3 Rb3 43.Kg4 Rf2-+) 39.Bf8 (39.Kf2-+) 39...Kf8 40.Rb2 (40.Kf2-+) 40…Rb2 (40...Rb2 41.h3 Ree2 42.Kf1 Rec2 43.Kg1 Rg2 44.Kf1 Rgc2 45.d5 Rc1) 0-1. FERNANDO_2013 (2070) - ribut1980 (2230), Rated Rapid game, lichess.org, 2020.

6.Nf3 0-0 7.Qc2 Nc6 8.a3 a5 9.b5 Nb8 10.Be2 Qd7 11.0-0 Bf5 12.e4 Bg4 13.d4 ed4 14.Nd4+/- Be2 15.Qe2 Re8 16.Nf5 Bf8 17.Qf3 Qe6 18.Rfe1 Nbd7 19.Nd5 Nd5 20.cd5 Qg6 21.Rac1 Rac8 22.Re3 b6?? 23.Qh3+- Ne5 24.Rg3 Qf6 25.Bd4 Kh8 26.f4 g6 27.fe5 de5 28.Rc6 (28.Rc6 Qd8 29.Nh6 Bh6 30.Qh6+-) 1–0. Opocensky,Karel – Halvorsen,Trygve, Praha ol (Men), 1931.

6.Nf3 0-0 7.Qc2 Nc6 8.a3= h6 9.h3 a5 10.b5+= Nb8 11.Be2 Nbd7 12.d4 ed4 13.ed4 c6 14.0-0 cb5? 15.d5+- Bd5 16.cd5 b6? 17.Bb5 Nb8 18.Nd4 Qc8 19.Nf5 Bd8 20.Rac1 Kh8 21.Qd3 Bc7 22.Nh6! gh6 23.Ne4 Bd8 24.Rc8 (24.Rc8 Nbd7 25.Bd7 Rg8 26.Bf6 Bf6 27.Nf6 Kg7 28.Nh5 Kh8 29.Qd4 f6 30.Qf6 Kh7 31.Qf7 Kh8 32.Qg8#; 24.Nf6 Qc2 25.Rc2 Bf6 26.Bf6 Kg8 27.Qg3 Kh7 28.Bd3#) 1–0. smurilo (1670) – C_Artist_Think, chessHere.com, 2006.

6.Nf3 0-0 7.Be2 a6 8.0-0 Nc6 9.a3 Na7 (9...Re8 10.d4 ed4 11.Nd4 Nd4 12.Qd4=) 10.Qc2 (10.d4 ed4 11.Nd4 c5 12.Ne6 fe6+/-) 10...h6 (10...a5 11.d4+=) 11.d4 ed4 12.Nd4 Bd7 13.Bf3 Nc6 14.Nc6 bc6 15.Rfd1 Qc8 16.Rac1 a5 17.Ne2 (17.b5 Re8+/-) 17...ab4+= 18.ab4 Rb8 19.Bc3 c5 20.bc5 dc5 21.Rb1 Rb1 22.Qb1 Bf5 23.Qb2 Rd8 24.Rd8 Qd8 25.Ng3 Bd3 26.Be2 Be2 27.Qe2 Bd6 28.Qd2 (28.Nf5 Qd7 29.Nh6 gh6 30.Bf6 Bh2 31.Kh2 Qd6 32.Kg1 Qf6 33.Qg4 Kh7 34.Qe4 Kg7+/-) 28...Qc8? (28...Qe7 29.Qb2 Ne8 30.Nf1+=) 29.Ne2 (better 29.Bf6!? Bg3 30.hg3 gf6 31.Qd5+/-) 29...Ne4 30.Qc2 f5 31.g3 Qe6 32.Bb2 (32.f3 Ng5 33.Kf2 c6+=) 32...Be5 (32...Ng5 33.Kf1=) 33.Be5 Qe5 34.Nf4 Qa1 35.Kg2 Qf1?? (better 35...Qe5+=) 36.Kf1+- 1-0. dannysmet (2075) - Chiyenge (2065), Rated Blitz game, lichess.org, 2021.

6.Nf3 0-0 7.Be2 Nbd7 8.0-0 h6 9.a4 c6 10.Qc2 d5=+ 11.cd5 cd5 12.Ba3 Rc8 13.Qb2 Re8 14.Rfc1 a5 15.Nb5 ab4 16.Bb4 Bb4 17.Qb4 Qe7 18.Qe7 Rc1 19.Rc1 Re7 20.d4 e4 21.Nd2 Nb6 22.a5+/- Na4 23.f3 ef3+= 24.Bf3 Bf5 25.Nc7 Re3+= 26.Bd5 Nd5 27.Nd5+/- Rd3 28.Ne7 Kh7 29.Nf5 Rd2 30.Ng3 Rd4= 31.Rc7 Rd5 32.Rb7 Ra5 33.Rf7 Nb2 34.Kf2 Ra3 35.Rf3 ½–½. wlittle (2235) – navaltoy (2370), net–chess.com, 2004.

6.Nf3 0-0 7.Ng5 Nbd7 8.Ne6 fe6 9.Be2 Qe8 10.Qc2 Qf7 11.0-0-0 (better 11.0-0!?=) 11...d5=+ 12.c5 (12.a3=+) 12...d4 (12...a5!? 13.a3 ab4 14.ab4 c6-/+) 13.Ne4 (better 13.ed4 ed4 14.Ne4=) 13...c6?? (better 13...Ne4!? 14.Qe4 a5=+) 14.ed4 (14.Ng5 d3 15.Qd3 e4+-) 14...ed4? (14...Nd5 15.h4+=) 15.Bd4?? (better 15.Ng5 Qe8 16.Ne6+- (16.Bd4?! e5 17.Bb2 a5+/-)) 15...Nd5+= 16.a3 Rac8 (16...b5 17.h4=) 17.Bc4 (17.h4 h6+/-) 17...e5 18.Bb2 N7f6 (18...a5!?+=) 19.Ng5+/- Qg6? (better 19...Qh5 20.Ne6 Rf7+/-) 20.Qg6+- hg6 21.f3 (21.Be5?! Ng4 22.Bg7 Bg5 23.Bf8 Rf8+=) 21...Nd7 22.Ne6?? (better 22.Ne4+-) 22...Rf6+= 23.Ng5 Rf5?? (23...Rff8 24.Ne4 Kh7+-) 24.Ne4+- N7f6 25.Nd6 (better 25.Rde1!? Re8+-) 25...Bd6 26.cd6 Rd8 27.Rhf1 (better 27.Rhe1!?+-) 27...Rd6+/- 28.g4 (28.Rde1 Nd7+/-) 28...Rf4 29.Be5?? (better 29.d3 Nd7 30.Rde1+/-) 29...Rc4-/+ 30.Kb1 (30.Kb2!? Rd8 31.Kb3-+) 30...Rd8 31.g5 (31.Rfe1 Nf4-+) 31...Nd7 32.Bb2 Rh4 33.f4 (33.Rf2 Nf4-+) 33...Ne7 (33...Rh2 34.Be5-+) 34.d4 (34.Rde1 Kf7-+) 34...Nf5 35.d5 (35.Rf2 Nb6-+) 35...Ne3 36.Rde1 (36.dc6 bc6 (36...Nd1?! 37.Rd1 bc6 38.Be5-+) 37.Be5 Nf1-+ (37...Nd1?! 38.Rd1 Rh2 39.Kc1-+)) 36...Nf1 37.Rf1 cd5 38.Be5 (38.Rf2 Kf7-+) 38...Nb6 (38...Ne5 39.fe5 Rh2 40.e6-+) 39.Kb2 (39.Bc7 Ra8-+) 39...d4 (39...Nc4 40.Ka1-+) 40.Kb3 (40.Rc1 Rh2 41.Kb1 Rd7-+) 40...d3 (better 40...Rh3 41.Ka2 Nc4 42.Rh1-+) 41.Rd1 Rh2 42.a4 d2 43.a5 (43.Bc7 Rc8 44.Bb6 ab6-+) 43...Nd5 44.Bd4 Nf4 (better 44...Rh3!? 45.Kb2 Rd3 46.Ba7-+) 45.Be3 (45.Be3 Rd3 46.Kc2 Re3 47.Rd2 Rd2 48.Kd2-+). euderlevi (2005) - alessandrocarvalhaes (1875), lichess.org, 2019.

6.Nf3 a5 7.b5 Nbd7 =.

6.f4 ef4–/+ 7.ef4 d5 8.Qf3 Bb4 9.f5 Bc3 10.Bc3 Bd7 11.g4 Bc6–/+ 12.g5? d4-+ 13.Qe2 Qe7 14.Qe7 Ke7-+ 15.Bb4 Kd7 16.gf6 Bh1 17.fg7 Rg8 18.f6 Ke6 19.Bd3? Kf6-+ 20.Bf8 Nd7 21.Bh7 Nf8 22.gf8Q Rgf8 23.Ne2 Rae8 24.0-0-0 Re2 25.Rh1 Rh8 26.Rf1 Kg7 27.Bd3 Reh2 28.Rf4 R8h4 29.Rf5 Rh5 30.Rf4 Ra5 31.Bb1 c5 32.Rg4 Kf8 33.Rf4 Rg2 34.Be4 Rg1 35.Kc2 Ra2 (35...Ra2 36.Kd3 Rg3 37.Ke2 b6-+) 0–1. Lais,Klaus Joerg – Gross,H, Saarland–chC, 1992.

6.d4 ed4 7.Nd4 Bf6 8.Nc3 Nb6 9.Ne6 fe6 10.Bd3 Ne7 11.0-0 0-0 12.Qh5 g6 13.Qh3 Nf5 14.g4 Nh4 15.f4 g5 16.fg5+/- Bg5 17.Rf8 Qf8 18.Ne4 Nf3?? 19.Kh1+- e5 20.Rf1 (20.Rf1 Qg7 21.Rf3+-) 1–0. Fritz 10 – NN, 2007.

6.d4 e4 7.d5 Bg4 8.Qc2 = (< 8.Bg7 Bf6 9.Qd4 Bd4 10.Nd4 Qh4=+).

6.d4 Bf6 7.Nbd2 c6 8.Be2 Qc7 9.0-0+= d5 10.de5 Ne5+= 11.Nd4 Qd7 12.Ne6 fe6+= 13.Qb3 Qc7 14.Rac1 Ng6 15.cd5 ed5 16.Bf3 Bb2 17.Qb2 Nf6 18.b5 Qe5 19.Qb4 Qe7 20.Qe7 Ne7= 21.bc6 bc6 22.e4 Kf7 (22...Rd8 23.ed5 Rf8 24.Rfe1 cd5 25.Nb3=) ½–½. Finogenov,Mikhail – Karvazkiy,Aleksey, Tula–ch Region, 2002.

6.d4 Ngf6 7.Nbd2 =.

6.Be2 Ngf6 7.d3 0-0 8.Nc3 d5 9.cd5 Nd5 10.Nd5 Bd5 11.a3 Bf6 12.0-0 Qe7 13.Nd2 Bg5 14.Bf3 Bf3 15.Nf3 f5 16.Qb3+/- Kh8 17.Ng5 Qg5 18.Qd5 Qe7 19.Qb7+- f4 20.ef4 ef4 21.Qc7 Rac8 22.Rae1 Qf7 23.Qd6 Rce8 24.f3 Nb6 25.Re8 Re8 26.Bd4 Nc8 27.Qc6 h6?! 28.Bf2 Qh5 29.Re1 Rg8 30.Qc7 a6 31.Qf4 a5 32.ba5 Qa5 33.Qb4 (33.Qb4 Qa6 34.d4+-; 33.Re6!? Rd8 34.Bd4 Kg8+-) 1–0. Kabela,Adam – Jaros,Martin, Frymburk Czech–ch U14, 2000.

6.Be2 Nh6 7.Qc2 Nf5 8.0-0 0-0 9.Nc3 c6 10.d4+= ed4 11.ed4 Nf6 12.d5 cd5 13.Bd3 Ne4?? 14.Nd5+- Bd5 15.cd5 Rc8 16.Qa4 Nc5 17.bc5 Nh6 18.Qe4 g6 19.Qf4 Nf5 20.Bf5 gf5 21.Qg3 (21.Qg3 Bg5 22.Ng5 f6 23.Ne6 Kf7 24.Qg7 Ke8 25.Qf8 Kd7 26.Qd6 Ke8 27.Nd8 Rd8 28.Rfe1 Kf7 29.Qf6 Kg8 30.Qg7#) 1–0. wiking – zemorais, internet, 2009.

6.d4 ed4 7.Nd4 Bd7 8.Bd3 Bf6+= 9.Qb3 (9.b5 c5 10.bc6 Nc6 11.Qb3 Nd4+=) ½–½. Nielsen,Joergen Axel – Thoegersen, Randers, 1974.

6.d4 Nd7 7.Be2 Bf6 8.0-0 Ne7 9.Qc2 e4 10.Nfd2 0-0 11.f3 d5 12.Nc3 b6 13.Nd5 Nd5 14.cd5 Bd5 15.Bc4 Bc4 16.Qc4 Kh8 17.fe4 Re8? 18.Rf5+- c5 19.e5 Bg5 20.Nf1 Rc8 21.d5 Nf8 22.b5 Ng6 23.Rd1 Nh4 24.Rf7 Rf8 25.Ra7 Rc7 26.Rc7 Qc7 27.d6 Qb7 28.e4 Ng6 29.e6 Nf4 30.Be5 Ne6 31.Qe6 (31.Qe6 Qa8 32.d7+-) 1–0. Fritz 10 – NN, 2007.

6.d4+= e4 7.d5 Bf6 8.Nd4 Bd7 9.Qb3 c6 10.Nd2 a6 11.c5+/- dc5 12.bc5 Qc7 13.d6+- Qc8 14.Bc4 Nh6 15.Ne6 Be6 16.Be6 Nd7 17.Nc4 Qd8 18.Bd7 Qd7 19.Bf6 gf6 20.Nb6 Qf7 21.Na8 (21.Na8 Qb3 22.ab3+-) 1–0. Dluhosch – Collen, corr AK 1360, 1989.

6.Be2 Bf6 7.d3 Ne7 8.Nbd2 Nd7 9.0-0 g5 (9...0-0 10.d4=) 10.Nb3 Ng6 11.a4 (11.d4 e4 12.Nfd2 Qe7+=) 11...g4= 12.Nfd2 h5 (12...Qe7 13.d4=) 13.d4+= e4 14.Qc2 c6 15.b5 (15.a5 h4+=) 15...d5 (15...h4 16.bc6 bc6 17.Rab1=) 16.cd5 (16.bc6 bc6 17.cd5 cd5+=) 16...Bd5 (16...cd5 17.Rfc1+=) 17.Nc5 Rb8 18.bc6 bc6 19.Nd7 Qd7 20.Nc4 (20.Ba3 h4+-) 20...0-0 (20...f4 21.Rfb1 f3 22.Bf1=) 21.Ne5 (21.Rab1 Be7+=) 21...Be5 (21...Ne5 22.de5 Bg7 23.Rab1=) 22.de5+= Qe6 23.Ba3 (23.Bd4 Rf7+=) 23...Rfe8 24.Bd6 (24.Bc5 Rb7=) 24...Rb7 25.Rfb1 Rf7 (25...Rd7 26.Bc5=) 26.a5 (26.Rb4 Ne5 27.Rb8 Rb8 28.Bb8 Qf6=+) 26...f4 (26...Ne5 27.Bb8 h4=+) 27.a6 (better 27.ef4!? Nf4 28.Rb2=) 27...f3–/+ 28.Bf1 fg2 29.Bg2 Ne5 30.Rb7?? (better 30.Be5 Qe5 31.Ra4=+) 30...Qd6-+ 31.Rd1 (31.Rf7 Kf7 (worse 31...Bf7 32.Be4 Bd5 33.Qd1-+) 32.Rb1 Rb8-+) 31...Nf3 (31...Qa3 32.Rf7 Kf7 33.Rb1-+) 32.Bf3 gf3 (32...ef3?! 33.Rf7 Kf7 34.Qh7 Kf6 35.Qh6 Ke7 36.Qh5-+) 33.Kh1 Ree7 (33...Rb7 34.ab7 Rb8 35.Qe4 Be4 36.Rd6 Rb7 37.h3-+) 34.Rg1 Rg7 35.Rg7 (35.Qb1 Rb7 36.ab7 Qb8-+) 35...Kg7 (35...Rg7 36.Rg7 Kg7 37.Qb2 Qf6 38.Qf6 Kf6 39.Kg1-+) 36.Qb2 (36.Rb1 Kh7 37.Rd1 Qe5-+) 36...Kh7 37.Rb8 (37.Re7 Qe7 38.Qb7 Qg7 39.Qg7 Kg7-+) 37...Bg8 38.Qb1 Qe6 (38...Ba2 39.Qg1 Qb8 40.Qg3 Qb5 41.Qg1 Rg7 42.Qc1 Qe2 43.Qa1 Qf2 44.Qg7 Kg7 45.h3 Qg2) 39.Rb7 Rg7 40.Rg7 Kg7 41.Qb7 Kh6 42.Qc7 Qg6 43.Qf4 Kh7 44.Qc7 (44.Qg3 Qg3 45.hg3 Bc4-+) 44...Bf7 45.Qg3 Qg3 46.hg3 Bc4 47.Kh2 Kg6 48.Kh3 Kg5 49.Kh2 Plans c5 49...Kg4 50.Kg1 Ba6 51.Kh2 c5 52.Kh1 (52.Kg1 Be2 53.Kh2 c4 54.Kg1 c3 55.Kh1 Kh3 56.Kg1 c2 57.Kh1 c1Q) 52...c4 53.Kg1 c3 54.Kh1 Kh3 (54...Kh3 55.Kg1 c2 56.Kh1 c1Q) 0–1. Hilbert,Stephan J (1755) – Kuge,Tom (1620), FICGS, 2013.

6.Be2 Bf6 7.d4 e4 8.Nfd2 Ne7 (8...c5 9.a3 Ne7 10.Bh5 g6 11.Be2 Nbc6 12.b5 Na5 13.Ra2 cd4=; 8...Nh6 9.0-0 0-0 10.Nc3 c6 11.Qc2 Nd7 12.a4 Qe8 13.f3 Bg5=; 8...d5 9.cd5 Bd5 10.Nc3 Ne7 11.0-0 Nd7 12.Nd5 Nd5 13.Qb3 N7b6+=) 9.Nc3 (9.0-0 0-0 10.f3 d5 11.Qc2 Bg5 12.f4 Bf6 13.a3 a5=) 9...c6 (9...0-0 10.d5 Bf7 11.g4 Bg6 12.gf5 Bf5 13.Qc2 Na6=) 10.0-0 d5 (10...0-0 11.a3 d5 12.f3 Bg5 13.f4 Bf6=) 11.a4 (11.f3 0-0 12.Qc2 Bg5 13.Nd1 Na6=) 11...a6 (11...0-0 12.Qb3 Qd7 13.f3 Bg5=) 12.Qc2 (12.c5 0-0 13.Nb3 Bg5=) 12...Nd7 (12...0-0 13.f3 Bg5=) 13.b5 (13.Bh5 g6+=) 13...c5 (13...0-0!?=; 13...f4=) 14.cd5+/- Nd5 15.Nd5 Bd5 16.dc5 Rc8 17.Bf6 Qf6 18.c6 0-0 (18...bc6 19.ba6 Deflection (19.ba6 Passed pawn)) 19.Rac1 (19.c7!?+/-) 19...ab5= 20.Bb5 Bc6 21.Qb3 Qf7?? (better is 21...Kh8=) 22.Bc4+- Ne5 23.Bf7 Rf7 24.Rc3 Rd8 25.Nb1 (better is 25.Rc5 Rd2 26.Re5 Rd3+-) 25...Kh8 (25...Nd3 26.f3 Bd5 27.Qb6+-) 26.Rc5 (better is 26.Qe6!? Re8 27.Rc6 Rff8+-) 26...Re7 27.Qb6 Rd6 (27...Rde8 28.Qa7+-) 28.Qa7 Rde6 29.Rd1 h5 30.Rd8 (30.a5 Kh7+-) 30...Kh7 31.Rc1 Nd3 32.Rc3 f4 33.Ra3 Rg6 (33...h4 34.Nc3+-) 34.Qb8 Rf6 35.Rf8 (35.Rh8 Kg6+-) 35...fe3 (35...Rf8 36.Qf8 Rd7 37.ef4 Nf4 38.Nc3 Ne2 39.Kf1 Nc3 40.Rc3+-) 36.fe3 (better is 36.Rh8 Kg6 37.fe3+-) 36...Re8 (36...Rf8 37.Qf8 Rd7+-) 37.Re8 Nc1 38.Rh8 Kg6 39.Qg3 Kf7 40.Nc3 1–0. Kamaletdinov,Farit (1970) – Murzaliev,Baurzhan, Astrakhan Championship Men, 2011.

6.Be2 Bf6 7.d4 e4 8.Ng1 a5 (8...Na6 9.b5 Nc5 10.Nh3 Ne7 11.Nc3 Nd7 12.Nf4 Bf7 13.0-0 0-0+=; 8...d5 9.cd5 Bd5 10.Nc3 Ne7 11.Nh3 a6 12.Nf4 Nbc6 13.a3 Bf7=; 8...Ne7 9.Nh3 Ng6 10.Nc3 0-0 11.0-0 a5 12.b5 Nd7 13.d5 Bf7=) 9.b5 Ne7 10.Nh3 Ng6 11.0-0 0-0 12.Nc3 Nd7 13.d5 Bf7=.

6.Qc2 Ne7 7.d4 ed4 8.Nd4 Bd7 9.Nc3 Nbc6 10.Nc6 Nc6 11.b5 Ne5 12.Be2 0-0 13.0-0 g6 14.Nd5 Bg7 15.f4 Ng4 16.Bg7 Kg7 17.Qc3 f6 18.Rab1 c6 19.Nb4 cb5 (19...Qe8 20.Rb3+=) 20.Nd5 Bc6?? (better 20...Qc8+=) 21.Bg4+- Bd5 (21...bc4 22.Qc4 Qa5 23.Bf3+-) 22.cd5 Rc8 (22...a6+-) 23.Bc8 (23.Bc8 Qc8 24.Qc8 Rc8 25.Rfc1 Rc1 26.Rc1+-) 1–0. Guest – Guest699, internet, 2020.

6.Qc2 Ne7 7.Be2 Ng6 (7...0-0 8.0-0=) 8.Nc3 0-0 (8...Nc6 9.b5 Na5 10.Ne4+=) 9.0-0 Nc6 (9...Nd7 10.a3=) 10.a3 Nce7 (10...Re8 11.Ne4+=) 11.Ne4+= Bf5 (11...Nf5!?+=) 12.Nf6+/- gf6 13.d3 (13.e4 Nf4 14.d4 Bg6+/-) 13...Kh8 (13...c5 14.Rab1+/-) 14.h4 (14.e4 Be6+/-) 14...Bg4 (14...Rg8 15.h5 Nf8 16.Nh4+/-) 15.Ne5 Ne5 16.Be5 Be2? (better is 16...fe5 17.Bg4 d5+/-) 17.Bf6+- Kg8 18.Qe2 Qd7 19.Qf3 Ng6 (19...Rfb8+-) 20.h5 (worse is 20.Qb7 Qf5 21.Qf3 Qf3 22.gf3 Rfe8+-) 20...Qe6 21.Bb2 (better is 21.Bd4 Ne5 22.Qg3 Kh8+-) 21...Nh4 (21...Ne5 22.Qg3 Kh8 23.f4+-) 22.Qf4 Qe7 (22...Ng6 23.hg6 fg6 24.Qd4+-) 23.Bf6 (23.Bf6 Qe6 24.Qh4+-) 1–0. Janek – zaquz, internet, 2017.

6.Nc3 e4 7.Nd4+= Bd4 8.ed4 d5 9.cd5 Bd5 10.Qh5 Nf6 11.Qe5 Kf8 12.b5 Nbd7= 13.Ba3 Kg8 14.Nd5 Ne5 15.Ne7 Qe7 16.Be7 Nd5 17.de5+= Ne7 18.Rc1 c6 19.Rc4 cb5 20.Re4 a6 21.f4 Kf8 22.g4 Rc8 23.Bg2 Nc6 24.0-0 Ke7 25.a4 ba4= 26.Ra4 Rhd8 27.Rb1 Rc7 28.Bc6+= bc6 29.Rb2 c5= 30.Kf2 Rd3 31.Ra6+/- Rcd7 32.f5 Rd2= 33.Rd2 Rd2 34.Kg3 Re2 35.f6+/- gf6 36.ef6 Ke8 37.Rc6 Rc2 38.Rc8 Kd7= 39.Rh8 Ke6 40.Rh7 Kf6 41.h4 c4 42.g5+= Kg6 43.Rh6 Kg7 44.Rc6 Rc1 45.h5 c3 46.h6 Kh7 47.Kg2 c2 48.Rc3 Kg6 49.Rc7 Rd1 50.Rc2 Rd5 51.Rc6 Kh7 52.Kf3 Rg5 53.Rf6 ½–½. Kruchinin,Anatoly V – Chistiakova,Tamara (2060), RUS–Cup Nizhniy Novgorod, 1999.

6.d3 Ne7 7.Be2 Nd7 8.0-0 0-0 9.Nbd2 c6 10.Ne4 Qc7 11.Nf6 Nf6 12.Ng5 Bd7 13.f4 Ne8 14.fe5 de5 15.d4 Ng6 16.d5 cd5 17.cd5 Qd6 18.a3 Nf6 19.Bc4 a6 20.Nf3 Bb5 21.Bb5 ab5 22.h4 h5 23.Ng5 Rae8 24.e4 Ng4 25.Rf3 Nf4 26.Nh3 Qb6 27.Kh1 (27.Nf2!?) 27...Nh3 28.Rh3 Nf2 0–1. mtr – fe01, Internet, 2001.

6.Be2 Ne7 7.0-0 0-0 8.Nc3 Nd7 9.d4 ed4 10.ed4 Bg4 11.Ne4 d5 12.Nf6 Nf6 13.c5 Ng6 14.Ne5 Be2 15.Qe2 Re8 16.Qf3 c6 17.Rfe1 Qc7 18.Re2 Re7 19.Rae1 Rae8 20.g3 (20.Ng6 fg6 21.Bc1 Re2 22.Re2 Qf7+=) 20...Ne4 21.Nd3 f6 22.Kg2 Ng5 23.Qg4 Re4 24.Re4 de4 (worse is 24...Ne4 25.f3 f5 26.Qf5+/-; 24...Re4?! 25.Re4 de4 26.Nf4=) 25.Bc1 (25.h4 Qf7 26.hg5 ed3 27.Re8 Qe8 28.gf6 gf6=) 25...Qd8 26.Bg5 ed3 27.Re8 Qe8 28.Be3 Kf7 29.Qf5 Qe6 30.Qd3 Qa2 31.b5 Qd5 32.Kg1 (better is 32.f3!?=) 32...Ne5–/+ 33.Qh7 Nf3 34.Kf1 cb5 35.h4 Nd4 36.Kg1? Nf3-+ 37.Kf1 Qc4 38.Kg2 Ne1 39.Kg1 Qd5 40.Kf1 Qd3 41.Qd3 Nd3 42.Ke2 Ne5 43.f4 Nc6 44.g4 f5! 45.g5 Kg6 46.Bc1 Kh5 47.Bb2 g6 48.Bf6 Kh4 49.Kf3 a5 50.Bb2 b4 51.Ke3 a4 52.Kd3 Kg4 53.Bc1 Kf3 54.Kc4 Ke4 0–1. Tutov,Valeriy – Semenets,Grigory (2125), Kiev Spring, 2011.

6.Be2 Ne7 7.d3 0-0 8.Nbd2 Ng6 9.0-0 Nd7 10.h3 h6 11.a3 c5 12.b5 b6 13.a4 a6 14.Qc2 ab5 15.ab5 Ra1 16.Ra1 Qc7 17.Ra6 Nb8 18.Ra8 Bf5 (18...d5!?=) 19.Qa4+/- e4? (better is 19...Be6!? 20.Ne4 Qd8+/-) 20.de4+- Be6 (20...Bb2 21.ef5 Ne5 22.Ne5 Be5 23.Qa3+-) 21.Bf6 gf6 22.Nh4?? (22.Ra7 Qc8+-) 22...Ne5?? (better is 22...Nh4 23.Bd3 Ng6–/+) 23.Nf5+- Bf5 24.ef5 Nbd7 25.Rf8 Nf8 26.f4 Ned7 27.Bf3 Qd8 28.Ne4 Qe7 29.Qa7 Kg7 30.Kf2 Qd8 31.Nc3 Qb8 32.Qb8 Nb8 33.Nd5 Nfd7 34.g4 Kh7 35.h4 Nf8 36.Nb6 Nbd7 37.Nd5 Kg7 38.Ne7 Nh7 39.Nc8 Kf8 40.Nd6 Ke7 41.Nb7 Nb6 42.Bd5 Nf8 43.Nc5 Nfd7 44.Nd7 Kd7 45.e4 Kd6 46.Ke3 Kc5 47.Bf7 Nc4 48.Bc4 Kc4 49.b6 Kc5 50.b7 Kc6 51.b8Q (51.b8Q Kc5 52.g5 fg5 53.fg5 Kc4 54.gh6 Kc3 55.h7 Kc2 56.h8Q Kc1 57.Qc3 Kd1 58.Qd6) 1–0. Fournier,Frederic – salon13300, Active, 2004.

5.Qc2 Ng6 6.Nf3 Be7 7.Be2 Nd7 8.d3 0-0 9.Nbd2 b6 10.0-0 f6 11.Rfe1 Kh8 12.Bf1 c6 13.a3 a5 14.Bc3 ab4 15.ab4 Qc7 16.Qb2 Rfb8 17.Ra8 Ra8 18.Ra1 Qb7 19.d4 Ra7 (19...Ra1 20.Qa1 b5 21.cb5 cb5 22.Qa5+=) 20.Ra7+= Qa7 21.Qa1 (better is 21.b5!? c5 22.d5+/-) 21...Qa1= 22.Ba1 d5 (22...f5 23.e4=) 23.b5+= cb5 (23...c5 24.cd5 Bd5 25.e4+=) 24.cd5+/- Bd5 25.Bb5 Ndf8 (25...Be6!?+/-) 26.de5 f5 27.Bd4 Ne6 (better is 27...Bc5!?+-) 28.Bb6 Bb4 29.Bc4 Bc4 30.Nc4 Kg8 31.Nd4 Nd4 32.ed4 Kf7 33.d5 Ke7 (33...Nf4 34.d6 Ke6 35.Kf1+-) 34.g3 Kd7 35.f4 Ne7 36.e6 Ke8 37.d6 Nc6 38.Ne5 Nd8 39.Bd8 Bd6 40.Nc6 Bc5 41.Kg2 1–0. Eng,Andre Jerome – Bo Huynh Nhat,Truong, ASEAN–ch6 U10, 2005. (=1.c4 e5 2.e3 d6 3.b4 Be6 4.Bb2 Ne7)

5.d3 Na6 6.a3 c5 7.b5 Nc7 8.Be2 Nf5 9.Nf3 Be7 10.0-0 0-0 11.e4 Nh4 12.Nh4 Bh4 13.Nc3 a6 14.a4 b6 15.Bf3 Qf6 16.a5 ba5 17.Ra5. Bonetti,Shane – guest261, ICC, 2002.

5.Nf3 Bg4 6.Be2 h6 (6...Na6 7.a3+/-) 7.d4 (7.Nc3 Nd7+-) 7...e4 (7...a5 8.b5+/-) 8.Nfd2 h5 (8...Be2 9.Qe2 f5 10.g4+/-) 9.Ne4+- Nbc6 (9...d5 10.Ned2+-) 10.a3 (10.b5 Na5 11.f3 Bd7+-) 10...Nf5 (10...d5 11.Ned2+-) 11.Bg4 Nfe7?? (11...hg4 12.Nbc3 Nh4+-) 12.Bh5 g6 (12...d5 13.cd5 Nd5+-) 13.Nf6 1–0. Hingst,Thomas (2085) – Heineccius,August, remoteschach.de, 2011.

5.Nf3 Ng6 6.Be2 Be7 7.Nc3 0-0 8.0-0 a5 9.b5 c6 10.d4 Nd7 11.bc6 bc6 12.Ba3 ed4 (12...Rb8!?=) 13.Nd4+= (worse is 13.ed4 Nf4=; 13.Qd4?! Bf6 14.Qd3 Nb6=) 13...Nde5 (13...Nb8!?+=) 14.f4+/- (14.Ne6?! fe6 15.f4 Nf7=) 14...Nc4 15.Ne6 fe6 16.Bc4 d5 17.Be7 Qe7 18.Bb3 c5 (18...Qc5 19.Qd2+-) 19.f5! Rf5?? (19...ef5 20.Bd5 Double attack (20.Bd5 Deflection; 20.Qd5 Decoy); 19...Rf5 20.e4 Double attack (20.e4 Decoy)) 20.Rf5 ef5 (20...Rc8 21.Rf2 Qg5+-) 21.Qd5 Kh8 22.Qa8 Nf8 (22...Qf8 23.Qa5 h6 24.Rf1+-) 23.Qd5 (23.Qd5 Qe3 24.Kh1+-) 1–0. pcmvr – tche (2460), net–chess.com, 2016.

(--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Be6).

5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be6).

5.Nf3 Nf6 6.Be2 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7 6.Be2 Be6).

5.Nf3 Nf6 6.Be2 Be7 7.0-0 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 f5 4.e3 Nf6 5.Nf3 Be7 6.Be2 0-0 7.0-0 Be6).

5.a4 Qe7 6.b5 (6.Nf3 Qf7+=) 6...Nh6 7.Be2 g6 (7...Qf7 8.Nc3=) 8.Nf3+= Nd7 9.0-0 Nf7 (9...Bg7 10.d4+=) 10.d3 (10.Nc3 Bh6+-) 10...h5 (10...Bg7 11.Nc3+=) 11.Nh4 (11.Qc2 f5+-) 11...Rg8 12.f4 (12.Nc3 g5 13.Nf3 g4+-) 12...ef4 (12...f5 13.Nf3 0-0-0 14.Nc3=) 13.ef4+- (worse 13.Rf4 Bh6=+) 13...Nh6 14.Nc3 Nc5? (14...0-0-0!? 15.Re1 Re8+-) 15.Ng6! Qg7? (15...Rg6 16.Bh5 Pinning (16.Bh5 Decoy)) 16.Bh5 Bf7 (16...0-0-0 17.Nd5 Bd5 18.cd5+-) 17.Re1 Kd8 (17...Kd7 18.Nd5 Bg6 19.Bg6 (worse 19.Nf6 Kd8 20.Qe2 c6 21.Bg6 Qg6 22.Qe8 Kc7 23.Re7 Be7 24.Qe7 Kc8 25.Ng8 Qg8 26.Qd6 Qd8 27.Qc5 Qb6+-) 19...Qg6 20.Nf6 Kd8 21.Qe2 Qg2 22.Qg2 Rg2 23.Kg2+-) 18.Nf8 (better 18.Nd5 Nd7 19.Qe2+-) 18…Qg2 0–1. retiponziani (1965) – DaTruth123 (1785), ChessWorld.net, 2020.

5.Qb3 d5 6.Nc3 d4 7.ed4 Qd4 8.Nf3=.

5.Qb3 Be7 6.d4 Nh6 (6...ed4 7.ed4 d5 8.c5=) 7.Nf3 e4 8.Nfd2 Nf7 (8...d5!?+=) 9.Ne4+/- Nd7 (9...f5 10.Ng3 d5 11.cd5 Bd5 12.Qa4 Qd7 13.Qd7 Nd7 14.a3+/-) 10.Nbc3 Bf5 (10...0-0 11.Be2+/-) 11.Ng3 Bg6 12.Be2 0-0 13.0-0 Kh8 (13...Re8 14.e4+-) 14.a4 a5 15.b5 b6 (15...Re8 16.Rad1+-) 16.Nd5 Ng5 17.Bd3 (17.Ne7?! Qe7 18.Bd3 Bd3 19.Qd3 Rae8+-) 17...Bd3 18.Qd3 (18.Ne7 Bf1 19.Nc6 Bc4 20.Qc4 Qe8=) 18...h5?! (18...Re8+-) 19.Nh5 Qe8 (19...Re8 20.Qg6 Bf8 21.Ng3+-) 20.Nhf4 Kg8 (20...Bd8 21.Ng6 Kg8 22.Nf8 Nf8 23.f4+-) 21.Ne7 (better 21.Nc7 Qf7 22.Na8 Ra8+-) 21...Qe7 22.Ng6 Qf7 (22...Qe4 23.Qe4 Ne4 24.Nf8 Rf8 25.Rfe1+-) 23.Nf8 Rf8 24.Rac1 (24.f4 Nh7 25.e4 Re8+-) 24...g6 (24...f5 25.Ba3+-) 25.h4 (25.f4!? Ne6+-) 25...Ne6 26.g3 Kg7 (26...f5 27.Rcd1+-) 27.Kg2 (27.f4 Kg8+-) 27...g5 (27...Rh8 28.Rh1+-) 28.hg5 (28.Qf5 Qe7+-) 28...Ng5 29.f4 Ne6 30.Rh1 f5 (30...Rh8 31.Qf5 Nef8 32.Rh8 Kh8 33.Rh1 Kg7 34.Qg4 Qg6 35.Qg6 Ng6 36.e4+-) 31.Rh3 (31.d5 Nf6 32.Qf5 Qg6 33.Qe6 Qf7+-) 31...Nf6 (31...Kg8 32.d5 Qg6 33.de6 Qe6 34.Qd5 Qd5 35.cd5+-) 32.Rch1 (32.Qf5 Qg6 33.Qg6 Kg6+-) 32...Qg6 33.d5 (better 33.Rh6 Qh6 34.Rh6 Kh6 35.Qf5+-) 33...Nd8 (33...Nc5 34.Qd1 Nce4+-) 34.Rh7! Qh7 (34...Kg8 35.R7h6 Kg7 36.Rg6 Kg6 37.Bf6 Rf6 38.g4+-) 35.Rh7 Kh7 36.Qf5 Kg7 37.Bf6 (better 37.Qg5 Kf7 38.Bf6 Rg8+-) 37...Rf6 38.Qg5 Kf7 39.e4 Rg6 (39...Ne6 40.de6 Re6 41.Qd8+-) 40.Qf5 (better 40.Qd8!? Rg7 41.Qc7 Kg8 42.Qd6 Rb7+-) 40...Rf6 41.Qd7 Kf8 42.Qd8 Kg7 43.Qf6! Kf6 44.Kf3 Kg6 45.g4 Kf6 46.g5 Kg6 47.Kg4 Kf7 48.f5 Kg7 49.Kf4 Kf7 50.e5 White prepares f6 50...de5 51.Ke5 Ke7 52.g6 Kf8 53.f6 Kg8 (53...Ke8 54.f7 Ke7 55.Kf5 Kd6 56.f8Q Kd7 57.g7 c6 58.g8Q cd5 59.Qgf7) 54.Ke6 Kf8 55.Kd7 Kg8 56.Kc7 Kf8 57.Kb6 (57.d6 Kg8 58.d7 Kf8 59.d8Q) 57...Kg8 (57...Ke8 58.Kc6 Kf8 59.b6 Kg8 60.b7 Kf8 61.b8Q) 58.Ka5 (58.d6 Kf8 59.d7 Kg8 60.d8Q) 58...Kf8 59.c5 Kg8 (59...Ke8 60.c6 Kd8 61.b6 Kc8 62.f7 Kd8 63.f8Q) 60.c6 Kf8 61.d6 (61.c7 Ke8 62.c8Q) 61...Kg8 (61...Ke8 62.Kb6 Kf8 63.d7 Kg8 64.d8Q) 62.b6 (62.d7 Kf8 63.d8Q) 62...Kf8 63.b7 Ke8 (63...Kg8 64.b8Q) 64.b8Q 1-0. ClayPigeons (2130) - Jakub_Lang (2030), Rated Bullet game, lichess.org, 2021.

5.Qb3 Ne7 6.Nf3 c5 (6...d5 7.d4 e4 8.Nfd2=) 7.a3 (7.bc5 dc5 8.d4 cd4 9.ed4 ed4 10.Nd4 Bg4+=) 7...b5 (7...e4 8.Ng1=) 8.d4 (8.bc5 dc5 9.Qb5 Nbc6 10.Qc5 Kd7 11.Be5 Ng6= (worse 11...Ne5 12.Ne5 fe5 13.Qe5+=)) 8...bc4 9.Bc4 cd4?? (better 9...Bc4 10.Qc4 cb4 11.ab4 e4=) 10.Be6+- de3 (10...d5 11.ed4 Qd6 12.Bh3+-) 11.fe3 Qb6 12.Bf7 Kd8 13.0-0 (13.Nbd2 Qb7+-) 13...Nf5 (13...Nd7 14.Qd3+-) 14.Re1 (14.Bd5 Nc6 15.Ne5 de5 16.Rf5 Rc8+-) 14...Nd7 15.Nbd2 Rc8 16.Nc4 Qc7 17.Rac1 Qb7 (17...Nc5 18.bc5 Qf7+-) 18.Na5 Qb6 (18...Qb5 19.Rc8 Kc8 20.Qc2 Nc5 21.Qf5 Qd7 22.Qd7 Nd7 23.Rc1 Kb8 24.Nc6 Ka8 25.Na7 Nb6+-) 19.Bd5 (better 19.Rc8 Kc8 20.Qc2 Qc7 21.Qf5+-) 19...Rc1 20.Rc1 (better 20.Nb7 Ke7 21.Bc1+- (21.Rc1?! Qe3 22.Qe3 Ne3+-)) 20...e4?? (20...Qe3 21.Kf1 Qb3 22.Bb3 d5+-) 21.Nd4 Nd4 (21...Nc5 22.Qc3 Ne7 23.Ndc6 Ke8 24.Ne7 Be7 25.bc5 dc5 26.Nc4+-) 22.Bd4 Qb8 (22...Nc5 23.Qc2 Kd7+-) 23.Nc6 Kc7 (23...Kc8 24.Nb8 Kd8 25.Qa4 Nb8 26.Qa5 Ke7 27.Rc8 Nd7 28.Qd8) 24.Nb8 Kb8 (24...Kd8 25.Qa4 Nb8 26.Qa5 Ke7 27.Rc8 Nd7 28.Qd8) 25.Qc4 (25.Ba7 Ka7 26.Qa4 Kb8 27.Qa8) 25...Nb6 (25...Nc5 26.bc5 dc5 27.Rb1 Kc7 28.Rb7 Kd8 29.Qb5 cd4 30.Qd7) 26.Qc7 1-0. ClayPigeons (2135) - baronrouge (2095), Rated Bullet game, lichess.org, 2020.

5.Qb3 g6 6.Nc3 Bg7 (6...Ne7 7.Nf3=) 7.Nf3 Ne7 8.d4 Nd7 (8...a5 9.b5=) 9.Be2+= f5 10.a4 e4 (10...a5 11.ba5 Ra7 12.0-0+=) 11.Ng5 Bg8 12.d5 Ne5 13.Ne6 (13.f4 ef3 14.Nf3 c6+=) 13...Be6= 14.de6 Qc8 15.Nd5 c6 16.Nf4 g5 (16...Rg8 17.h4=) 17.Nh5 (better 17.c5 gf4 18.cd6+/-) 17...Bf8? (17...Rg8 18.Ng7 Rg7 19.c5=) 18.c5 (18.Nf6 Kd8 19.Be5 de5 20.0-0-0 Kc7 21.Rd7 Kb8 22.Qd1+-) 18...d5?? (better 18...Nd5 19.Bc4 Qe6 20.Bd5 cd5+=) 19.Be5+- Rg8 20.Nf6 Kd8 21.Ng8 Ng8 22.Bd6 (22.a5 Qe6 23.Qc3 a6+-) 22...Qe6 (22...Bd6 23.cd6 Qe6 24.b5 Qd6 25.bc6 bc6 26.Rb1+-) 23.Bf8 f4 (23...Qf6 24.Rc1 Qf8 25.b5+-) 24.ef4 (24.Bd6 Qf6 25.Rd1 f3 26.gf3 ef3+-) 24...gf4 (24...Qf6 25.Rd1 Qf8 26.fg5+-) 25.Bd6 Nf6 (25...Qf6 26.Rd1 Nh6 27.b5+-) 26.h3 (26.Bf4 Qf5 27.Qg3 Nd7+-) 26...e3 (26...Ne8 27.Qc3 f3 28.gf3 Nd6 29.cd6 ef3 30.Qf3+-) 27.0-0 (27.fe3 fe3 28.0-0 Nd7+-) 27...f3 (27...ef2 28.Rf2 a6 29.Rf4+-) 28.Bf3 Ne4 (28...ef2 29.Rf2 Kd7 30.b5 Qd6 31.cd6+-) 29.Qe3 Kd7 30.Bg4 (30.Bg4 Qg4 31.hg4+-) 1-0. ClayPigeons (2190) - ctmntlds (2105), Rated Bullet game, lichess.org, 2020.

5.b5 a5 6.a4 Nd7 7.Nf3 h5 (7...Nb6 8.Qc2=) 8.Be2 h4 9.h3 Ne7 (9...Qe7 10.d4+=) 10.d4 Ng6 (10...g5 11.e4+/-) 11.Nc3 Bf7 12.Qc2 Be7 13.Bd3 (13.0-0 ed4 14.ed4 Nf4+/-) 13...Rh6 (13...ed4 14.Bg6 (14.Nd4?! Nge5=) 14...dc3 15.Bc3+/-) 14.0-0-0 (better 14.0-0!?+/-) 14...c6+= 15.Kb1 Rc8 16.de5 (16.c5 cb5 (worse 16...dc5 17.de5 Ngf8 18.Bf5+/-) 17.Bb5 Ngf8= (worse 17...dc5 18.de5 Ngf8 19.ef6 gf6 20.Nd5+/-)) 16...fe5 (16...Nge5 17.Ne5 fe5 18.Rd2=+) 17.Bf5 Rc7 18.Ne4 Nc5?? (better 18...cb5 19.Nd6 Bd6 20.Rd6 Ngf8 21.Rh6 gh6 22.ab5 Rc4+=) 19.Nc5 (better 19.b6!? Ne4 20.bc7 Qc7 21.Be4 Qb6+-) 19...cb5 20.Ne6 Rc4 (20...Be6 21.Be6 Nf8+-) 21.Nd8 Rc2 22.Nf7 Rb2 23.Kb2 Kf7 24.Bg6 (better 24.ab5 Nf8 25.Be4+-) 24...Rg6 25.Rhg1 Ke6?! (25...e4 26.Nd4 ba4+-) 26.ab5 Rf6 (26...d5 27.Ra1 b6 28.Rac1+-) 27.Kc3 (27.Rd2 Rf8+-) 27...d5 28.Kd3 (better 28.Ng5 Kf5 29.f4 d4 30.ed4 ef4 31.Nf3+-) 28...e4 29.Ke2 Bd6?? (better 29...ef3 30.gf3 g5+-) 30.Nd4 (better 30.Ng5 Ke5 31.f4 ef3 32.gf3 Be7 33.f4 Kd6 34.Ne4 Ke6 35.Nf6 gf6+-) 30...Kd7 31.Rd2 (31.f4 Rf8+-) 31...Bb4 32.Rc2 Rg6 33.g4 hg3 34.Rg3 Rg3 35.fg3 Kd6 (35...Be7 36.Nf5 Bf6 37.b6+-) 36.Nf5 Ke5 37.Ng7 d4 (37...Bf8 38.Nh5+-) 38.ed4 Kd4 39.Nf5 Ke5 40.Ne3 Be7 (40...Kd6 41.g4+-) 41.h4 (41.Nc4 Kd5+-) 41...a4 (41...Ke6 42.h5+-) 42.h5 a3 43.h6 Bf6 (43...Bf8 44.h7 Bg7 45.Rc7+-) 44.Ng4 Kd4 (44...Ke6 45.Nf6 a2 46.Ra2 Kf6+-) 45.Nf6 a2 46.Ra2 e3 47.g4 Kc3 48.g5 Kb3 49.Ra7 b6 (49...Kc4 50.h7 Kb5 51.h8Q Kc4 52.Qc8 Kd4 53.Ra4 Ke5 54.Re4 Kd6 55.Re6) 50.Rb7 (50.h7 Kc2 51.Nd5 Kb1 52.h8Q Kc2 53.Qc3 Kb1 54.Ra1) 50...Ka4 (50...Ka3 51.h7 Kb2 52.h8Q Kc2 53.Ne4 Kb1 54.Qc3 Ka2 55.Ra7 Kb1 56.Ra1) 51.Rb6 (51.h7 Ka3 52.Ra7 Kb2 53.h8Q Kc3 54.Qc8 Kd4 55.Rd7 Ke5 56.Rd5 Kf4 57.Qc7) 51...Ka5+- 52.Re6 Ka4 (52...Kb4 53.b6 Kb5 54.b7 Kb4 55.b8Q Ka5 56.g6 Ka4 57.Ra6) 53.Re5 (53.Re5 Ka5 54.h7 Kb4 55.Nd5 Kc4 56.Ne3 Kb3 57.b6 Kb2 58.b7 Kb3 59.b8Q Ka4 60.g6 Ka3 61.Ra5; 53.b6 Kb4 54.b7 Kc3 55.b8Q Kc4 56.Rc6 Kd4 57.Qd6) 1-0. BeepBeepImAJeep (2650) - HuKTO (2065), lichess.org, 2017.

5.b5 a6 6.a4 (6.d4 ab5 7.d5 Bf5=) 6...ab5 7.ab5 Ra1 8.Ba1 g6 (8...d5 9.cd5 Qd5 10.Nf3=) 9.Nf3 (9.d4 Bg7=) 9...Bg7 (9...Be7 10.d4+=) 10.d4+= Nd7 11.Be2 Ne7 12.0-0 0-0 13.Nc3 ed4 (13...Nb6 14.e4+=) 14.Nd4 Bf7 15.Bb2 Nc5 (15...f5 16.Nf3=) 16.Nb3 Ne6 (16...Nb3 17.Qb3 Nc8 18.Ra1+/-) 17.Bf3 (17.Ne4 f5 18.Bg7 Ng7 19.Nf6 Kh8+/-) 17...Qc8+= 18.Qa1 Ng5 19.Be2 f5? (19...h6 20.Rd1+=) 20.g3?? (better 20.Nd5 Nd5 21.Bg7+-) 20...Re8 21.Nd5 (21.Rd1 Qe6 22.Nd4 Qc8=) 21...Bb2 (21...Bd5!? 22.cd5 Bb2 23.Qb2 Nd5=+) 22.Ne7+= Re7 23.Qb2 Qe6 24.h4 (24.Nd4 Qe4 25.h4 Ne6+=) 24...Ne4= 25.Ra1 (25.Nd4 Qe5 26.Ra1=) 25...Qf6 (better 25...Ng3!? 26.Ra8 Be8=+) 26.Qf6+/- Nf6 27.Ra8 Re8 (27...Kg7 28.Ra7 b6 29.Nd4+=) 28.Re8 (better 28.Ra7+-) 28...Be8+= 29.c5 (29.Nd4 Bf7=) 29...Ne4 (29...dc5 30.Nc5 b6 31.Bc4 Kh8 32.Ne6=) 30.cd6 (30.b6 cb6 31.cb6 Bf7+=) 30...Nd6= 31.Nc5 (31.Nd4!?=) 31...Bb5 (31...b6!? 32.Ne6 Bb5 33.Bb5 Nb5-+) 32.Bb5=+ Nb5 (32...b6 33.Bc6 bc5 34.Kf1=+) 33.Nb7= Kf7 34.Kf1 Nc3 35.Ke1 (35.f3 Ke6=) 35...Ne4=+ 36.Ke2 Ke6 37.Nd8 Kd7 38.Nf7 Ke6 39.Ng5 (39.Nd8 Kd5 40.Nf7-/+) 39...Ng5-/+ 40.hg5 Kd5 (40...Ke5 41.f3-/+) 41.Kd3 Ke5 42.f3 Kd5 43.Kc3 Kc5 44.Kd3 Kd5 (44...Kb4!?-/+) 45.Kc3=+ Kc5 46.Kd3 Kd5 ½-½. ariel247 (2110) - GoingNowhere (2200), Rated Classical game, lichess.org, 2016.

5.d4 Nd7 6.Bd3 d5 7.c5 b6 8.Nd2 bc5 9.bc5 Rb8 10.Rb1 c6 11.Ne2 Ne7 12.Nb3 g5 13.Qc2 (better is 13.0-0!?+=) 13...e4+= 14.Ba6 Bg7 (14...Rb3 15.Qb3 Qa5 16.Nc3 Qa6 17.Ne4+=) 15.h4 (15.Bc3 Ng6+=) 15...h6 (15...Rb3 16.Qb3 Qa5 17.Nc3 Qa6 18.Ne4+=) 16.hg5 hg5 17.Rh8 Bh8 18.f4 (18.Bc3 Qc7+=) 18...g4 19.Kf2 f5 20.Rh1 Bg7 21.Ng3 Nf6 22.Bc3 Bc8 23.Be2 Ra8 24.Qd1 a5 (24...Qd7 25.Nh5 Nh5 26.Rh5=) 25.Nh5 Kf7 (25...Nh5 26.Rh5 a4 27.Nd2=) 26.Nf6 Kf6 27.Rh7 a4 28.Nd2 Ba6 29.Bg4 (better is 29.Ba6 Ra6 30.Ke1=) 29...fg4?? (29...Qg8 30.Qh1 fg4 31.Ne4 A) 31...de4 32.d5 Kf7 33.Qh5 (33.Rg7?! Qg7 34.Bg7 Kg7+-) 33...Kf8 34.Bg7 Qg7 35.Rg7 Kg7 36.Qe5 Kf7 37.Qe6 Kf8 38.Qf6 Kg8 39.Qe7 g3 40.Kg3 cd5 41.f5+-; B) 31...Kf7 32.Nd6 Kf8–/+) 30.Ne4!+- de4 (30...Kf5 31.Ng3 Kg6 32.Qc2 Kf7+-) 31.Qg4 Nf5 (31...Qg8 32.d5 Kf7 33.Rg7 Qg7 34.Qg7 Ke8+-) 32.d5 Ke7 33.Qf5 (33.Qg5 Kf8 34.Bg7 Kg8 35.Rh8 Kf7 36.Qf5 Kg7 37.Rh7 Kg8 38.Qf7) 33...Qf8 (33...Qg8 34.Qf6 Ke8 35.Qc6 Kf8 36.Bg7 Qg7 37.Qa8 Kf7 38.Qa7 Bb7 39.Qb7 Ke8 40.Qg7 Kd8 41.Qd7) 34.Qe6 Kd8 35.Ba5 1–0. Fournier,Frederic – Fournier,Jean_Noel, Partie Libre (Active), 1995.

5.Be2 Nd7 6.Nf3 Nb6 7.d3 Bd7 (7...c5 8.a3=) 8.a4 a5 9.b5 c6 10.Bc3 d5 11.Ba5?? (better 11.0-0+=) 11...Ra5-+ 12.0-0 (12.Nbd2 Qa8 (worse 12...cb5 13.ab5 Ra1 14.Qa1-+) 13.bc6 bc6-+) 12...dc4 (12...cb5!? 13.cb5 Bb5 14.Nc3-+) 13.dc4 cb5 14.cb5 Nh6 15.Nc3 Bb4 16.Qb3 (16.Nd5 Nd5 17.Qd5 Bc8-+) 16...Qe7 (16...Bc3 17.Qc3 Ra4 18.Ra4 Na4 19.Qa3-+) 17.Rfd1 (17.Rfb1 Bd6-+) 17...Bc3 (better 17...Be6 18.Qc2 0-0-+) 18.Qc3 Ra4 19.Qc7 Ra1 20.Ra1 Nc8 21.Qb7 0-0 22.Bc4 (22.Qc7 Nd6-+) 22...Kh8 23.h3 Nd6 24.Qd5 Nc4 25.Qc4 Rb8 (25...Qd6 26.Ra6 Qb8 27.Ra5-+) 26.Rb1 (better 26.Qc7 Rc8 27.Qb7-+) 26...Qe8 27.b6 Rc8 (27...Bh3!? 28.e4 Bg4 29.Nd2-+) 28.Qb4 Bc6 29.Nd2 Qg6 30.f3 Qd3 31.e4 Rb8 32.Nc4 g6 (32...Nf7 33.Kh2-+) 33.Na5 (33.Rb2 Ra8-/+) 33...Bb7-+ 34.Rb3 Qd1 35.Kh2 Ng8 36.Nb7 (36.Qc4 Qa1 37.Qc3 Qf1-/+) 36...Rb7-+ 37.Rc3 (better 37.Qc4 Qd6 38.Qb5-+) 37...Qd2 38.Qc5 Rb6! 39.Qb6 Qc3 40.Qe6 Qd2 41.Qf7 Qf4 42.Kh1 Qg3 43.Qf8 h5 44.Qf7 h4 45.Qf8 Qg5 46.Qf7 f5 47.ef5 Qf5 48.Qc4 g5 49.Qd5 Nf6 50.Qd8 Kg7 51.Qe7 Kg6 52.Qd6 e4 53.fe4 Qe4 54.Kh2 Qf4 55.Qf4 gf4 56.Kg1 Kf5 57.Kf2 Ke4 58.Ke2 Nd5 59.Kf2 Ne3 60.Ke2 Nf5 (60...Ng2 61.Kd2 f3 62.Kd1 Kd3 63.Kc1 f2 64.Kb1 Kc3 65.Ka2 f1Q 66.Ka3 Qa6) 61.Kf2 (61.Ke1-+) 61...Nd4 62.Ke1 Ke3 63.Kf1 f3 (63...Nf3 64.gf3 Kf3 65.Ke1-+) 64.gf3 Kf3 65.Kg1 White threatens to counter with Kg3 65...Kg3 66.Kh1 Kh3 (66...Ne6 67.Kg1 Ng5 68.Kf1 Nh3 69.Ke2 Nf4 70.Kf1 h3 71.Kg1 Nd3 72.Kf1 h2 73.Ke2 Nf4 74.Kd1 h1Q 75.Kc2 Qc6 76.Kb2 Nd3 77.Kb3 Qc5 78.Ka2 Qc3 79.Kb1 Qb2) 67.Kg1 Kg3 68.Kh1 h3 69.Kg1 Nf3 Black plans h2 (69...Nb3 70.Kh1 Nd2 71.Kg1 Ne4 72.Kf1 h2 73.Ke2 h1Q 74.Ke3 Qf3 75.Kd4 Kf4 76.Kd5 Qc3 77.Ke6 Qc7 78.Kd5 Kf5 79.Kd4 Qc3 80.Kd5 Qc5) 70.Kh1 Ne1 (70...Nd2 71.Kg1 Nb3 72.Kf1 h2 73.Ke2 h1Q 74.Kd3 Qc1 75.Ke4 Qc5 76.Kd3 Qd4 77.Kc2 Qe3 78.Kb1 Nd4 79.Ka1 Qc3 80.Ka2 Qb3 81.Ka1 Nc2) 71.Kg1-+ h2 (better 71...Nd3 72.Kf1 h2-+) 72.Kh1= Nf3 ½-½. dannysmet (2085) - Schachnagel (2095), Rated Blitz game, lichess.org, 2021.

5.Nf3 a6 6.Nc3 Nd7 7.d4+= c6 8.Be2 Qb6 9.a3 a5 10.b5 Ne7 11.0-0 Nf5 12.Bd3 ed4 13.Nd4 Nd4 14.ed4 f5?? 15.Re1+- Kf7 16.d5 Ne5 17.de6 Ke6 18.Na4 Qc7 19.f4 cb5 20.fe5 d5 21.cd5 Kf7 22.d6 (22.d6 Qd7 23.Nb6+-) 1–0. pierred – toughsam, ChessWorld.net, 2005.

5.Nf3 c5 6.b5 e4!?

5.Nf3 c5 6.b5 Ne7 7.Nc3 Nd7 8.Ne4 Nb6 9.d3 a6 10.a4 a5 11.Be2 Nbc8 12.Nh4 b6 13.Bh5 Kd7 14.Qf3 Ng6?? 15.Nc5! dc5 16.Bg6 hg6?? 17.Qc6+- Ke7 18.Ng6 Kf7 19.Nh8 Kg8 20.Qe6 Kh8 21.Ra3 Ra7 22.Qh3 Kg8 23.e4 Rc7 24.0-0 g6 25.Qg4 Kf7 26.f4 Bd6 27.fe5 (27.fe5 Be7 28.ef6+-) 1–0. Kramer,Haije J – Ginella, Nahp., 1988.

5.Nf3 c5 6.bc5 dc5 7.d4 cd4 8.ed4 Bb4 9.Bc3 Bc3 10.Nc3 ed4 11.Nd4 Qe7 +=.

5.Nf3 Nd7 6.d4 a5 7.d5 Bf7 8.b5 Ne7 9.Nbd2 Nc8 10.Bd3 Nc5 11.Bc2 Nb6 12.a4 g6 13.Qe2 Bg7 14.0-0 0-0 15.Ne1 Nbd7 16.Nd3 Nd3 17.Bd3 Kh8 18.f4 f5 19.e4 fe4 20.Ne4 Bg8 21.Ng5 Qe7 22.Rae1+= Rae8 23.Qg4 Nf6 24.Qh4+- Nh5 25.Bg6 hg6 26.g4 Bh6? 27.Re5?? de5–/+ 28.Be5 Bg7 29.gh5 Be5 30.hg6 Kg7 31.Ne6 Qe6?? 32.de6+- Re6 33.f5 Ref6 34.Qe4 Bd6 35.h4 Be6+/- 36.Qd4 b6= 37.Kg2 Bc8? 38.Kh3 Bc5 39.Qe5 Bd6 40.Qd4 Bc5 41.Qe5 Bd6 42.Qd4 Rh8?? 43.Kg4+- Re8 44.h5 Re5 45.Kg5 Rff5? 46.Rf5 Bf5 47.h6 Kh8 48.Qe5?? Be5+/- 49.Kf5 Bd4 50.g7 Kh7 51.Ke6 Kg8. Lueders – Henningsen, Silberner Turm, 1961.

5.Nf3 Bf7 6.Nc3+/- c6 7.Bd3 Ne7+/- 8.Qc2 d5 9.cd5 cd5 10.Be2 Nbc6 11.b5 Nb4 12.Qa4 Ng6? 13.a3+- d4 14.ed4 ed4 15.ab4 dc3 16.b6 Ke7 17.Bc3 a6 18.b5 Bd5 19.ba6 Qb6 20.0-0 ba6 21.Rfe1 Kf7 22.Bc4 (22.Bc4 Rd8 23.Ba5+-) 1–0. marre – opponent, internet, 2009.

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

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

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

5.Be2 Nbd7 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 Nbd7 6.Be2).

5.Be2 Be7 6.Nf3 h6 7.0-0= 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 h6 7.0-0 Be6).

5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Be6).

5.Nf3 Be7 6.Be2 0-0 7.0-0 h6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 h6 7.0-0 Be6).

5.Nf3 Be7 6.Be2 h6 7.0-0 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 h6 7.0-0 Be6).

5.Nc3 Nf6 6.Nf3 a5 (6...Bh6 7.d4 0-0 8.de5 de5 9.Qd8) 7.b5 Bh6 8.d4 Nbd7 9.Bd3.

5.Nc3 Bg7 6.b5 Ne7 7.Qf3 c6 8.g3 0-0 9.e4 f5 10.d3 Nd7 11.h4 Nc5 12.a4? fe4-+ 13.Qe3 Nf5 14.Qg5 Bf6 15.Qg4 Ne3! 16.Qe6 Ne6 17.fe3 ed3 18.Bd3 Nc5 19.Bc2 e4 20.Nh3 Qd7 21.0-0-0 Qg7 22.Kd2 Rad8 23.Nf4 d5 24.cd5 cd5 25.Nfd5 Rd5! 26.Nd5 Bb2 27.Ke2 Qe5 28.Rhg1 Qh5 29.g4 Qh4 30.Nf4 g5 31.Rh1 Qg4 (32.Kd2 Rd8 33.Ke1 Bc3 34.Kf2 Qf3 35.Kg1 Qe3 36.Kg2 Qf3 37.Kg1 Qg3 38.Kf1 Qf4 39.Kg1 Qg3 40.Kf1 Rf8 41.Ke2 Qf3; 31...gf4 32.Rh4 f3 33.Kf2+=) 0–1. Korsvold,Jon Egil – Schjelderup,Nils Jakob, Narvik CC, 1999.

5.Nc3 Bg7 6.Nf3 c5 7.Qa4 Qd7 8.bc5+/- dc5 9.Qd7 Bd7 10.Nd5+/- Na6 11.Ne5 Be6 12.Rb1 f6 13.Nd3 Bd5 14.cd5 Rd8 15.Nf4 Rd6 16.Bc3 Rb6 17.Bb5 Ke7 18.Ba5 Rd6 19.Ne6 Re6 20.de6 f5 21.Ba6 ba6 22.Rb7 Kf8 23.Rf7 Ke8 24.Rg7 Ne7 25.0-0 h6 26.Rb1 Nc6 27.Rc7 (27.Rc7 f4 28.Rbb7 Nd8 29.Rc8 fe3 30.Rd8#; 27.Rbb7 Kf8 28.Rgc7 Ne7 29.Rb8 Kg7 30.Bc3 Kh7 31.Rh8#) 1–0. michaelbuss – Raysand, ChessWorld.net, 2008.

5.Nc3 Bg7 6.Nf3 Nd7 7.Be2 Ne7 8.d4 f6 9.d5 Bf7 10.Rc1 0-0 11.0-0 Nb6 12.Qb3 Rb8 13.Rfd1 Nf5 14.Bd3 Ne7+= 15.Be2 Be8 16.c5+/- Nd7 17.cd6 cd6 18.Nb5 Nb6 19.Nc3 Rc8 20.a4 a6 21.a5 Nd7 22.Na4 Rc1 23.Rc1 Nc8 24.b5 ab5 25.Bb5 Na7 26.Bd7 Bd7 27.Nb6 Bb5+/- 28.h3 Rf7 29.Qc2 f5+= 30.Ba3 Bf8 31.Bb4 Ba6 32.Nc8 Nb5 33.Nb6 h6 34.Qc8+= Qe7 35.Nd2 Nc7 36.Ndc4 Nb5 37.Kh2 Kh7 38.Qb8 Qc7 39.Qe8+/- Qe7 40.Qe7 Be7 41.Nc8 Bf8 42.N4d6 Rc7+/- 43.Rc7 Nc7+= 44.Bc3 e4 45.f3 Nd5= 46.Bd4 ef3 47.gf3 Ne7 48.Ne7 Be7 49.Bc5 Bd8 50.Bb4 Be7 51.Bc5 Bd8= 52.Bb4 ½–½. Margraf,A – Lindmoser, Fuegen/Tirol, 1992.

5.Nc3 Bg7 6.Nf3 Ne7 7.d4 ed4 8.Nd4 0-0 9.Be2 Nec6 10.Ne6 fe6 11.Qb3 Qd7 12.0-0 a5 13.a3 ab4 14.ab4 Ra1 15.Ra1 Kh8 16.Nb5 Na6 17.Ra4 e5 18.Nc3 Qf5 19.f3 Bh6 20.Bc1 Bg7 21.Nd5 1–0. Fredek (2090) – Checkmate! (1835), Freundschaftspartie, 5m + 0s, 2005.

5.Nc3 Bh6 6.d4 Nf6 7.de5 de5 8.Qd8 Kd8 9.Nd5.

5.d4 f6 6.de5. Bonetti,Shane – hjk, ICC, 2002.

5.d4 Bg7 6.d5 Bd7 7.Nf3 Ne7 8.Bd3 0-0 9.0-0 f5 10.Bc2 (10.Be2 a5 11.b5 Bc8=) 10...Be8 (10...a5 11.b5=) 11.Ng5+= Bf7 (11...Bd7 12.Ba4+=) 12.Nd2 (12.Qf3 a5 13.a3 e4+=) 12...a5 13.ba5 (13.b5 Nd7+=) 13...Ra5= 14.Bc3 (14.Nb3 Ra7=) 14...Ra8 (14...Ra3 15.Nf7 Rf7 16.Bb2=) 15.Ndf3 Nd7 (15...h6 16.Nf7 Rf7 17.Qe2=) 16.Nf7+= Rf7 17.Ng5 Rf6 18.Ne6 Qc8 19.Bb3 (19.Ng7 Kg7 20.f4 Kg8+=) 19...Nf8 (19...Re6 20.de6 Nc5 21.Qe2=) 20.c5 (better 20.Ng7 Kg7 21.f4+-) 20...Nd5?? (better 20...Ne6 21.de6 Ra6+=) 21.Ng7+- (21.Qd5?! Ne6 22.cd6 cd6+=) 21…Kg7 1–0. DEFFM – GuestZPZJ, freechess.org, 2018.

5.d4 Bg7 6.de5 Be5 7.Be5 de5 8.Qd8 Kd8 9.Nc3 a5 A) 10.b5 Nf6 (10...Nd7 11.0-0-0 Ke7 12.Nf3 Ngf6 13.Kb2; 10...Ke7 11.Nf3 Nd7 12.0-0-0 Ngf6 13.Kb2) 11.0-0-0 Nbd7 12.Nf3 Ke7 13.Kb2; B) 10.0-0-0 Nd7 (10...Ke7 11.b5 Nf6 12.Nf3 Nbd7 13.Kb2) 11.b5 Ngf6 12.Kb2 Ke7 13.Nf3.

5.d4 Bg7 6.de5 Be5 7.Be5 de5 8.Qd8 Kd8 9.Nc3 Nd7 A) 10.Nf3 Ngf6 (10...a5 11.b5 Ngf6 12.0-0-0 Ke7 13.Kb2) 11.0-0-0 a5 12.b5 Ke7 13.Kb2; B) 10.Bd3 a5 (10...Ngf6 11.Nf3 a5 12.b5 Ke7 13.Ke2) 11.b5 Ke7 12.Nf3 Ngf6 13.Ke2; C) 10.Be2 a5 (10...Ngf6 11.0-0-0 a5 12.b5 Ke7 13.Nf3; 10...Ke7 11.0-0-0 a5 12.b5 Ngf6 13.Nf3) 11.b5 Ngf6 12.0-0-0 Ke7 13.Nf3; D) 10.0-0-0 Ngf6 (10...a5 11.b5 Ke7 12.Nf3 Ngf6 13.Kb2) 11.Nf3 a5 12.b5 Ke7 13.Kb2.

5.d4 Bg7 6.de5 Be5 7.Be5 de5 8.Qd8 Kd8 9.Nc3 Nf6 10.Nf3 (10.0-0-0 Ke7 (10...Nbd7 11.Nf3 a5 12.b5 Ke7 13.Kb2) 11.Nf3 a5 12.b5 Nbd7 13.Kb2) 10...Nbd7 (10...a5 11.b5 (11.0-0-0 Nbd7 12.b5 Ke7 13.Kb2) 11...Nbd7 12.0-0-0= (12.Bd3 Ke7 13.Ke2) 12...Ke7 13.Kb2) 11.0-0-0 (11.Rd1 a5 12.b5 Ke7= 13.Bd3; 11.Be2 Ke7 12.0-0-0 a5 13.b5) 11...Ke7 (11...a5 12.b5 Ke7 13.Kb2) 12.Ng5 (12.Kb2 a5 13.b5 e4=) 12...Rhd8 (12...a5 13.b5=+) 13.Ne6= Ke6 14.c5 c6 15.Bc4 (15.Kb2 a5 16.Bc4 Ke7=) 15...Ke7 16.f3 (16.Kc2 a5 17.a3 ab4 18.ab4 b6=) 16...b6 (16...a5 17.a3=+) 17.cb6= Nb6 18.Bb3 Nfd5 (18...Nbd5 19.Bd5 Nd5 20.Nd5 cd5 21.Kd2=) 19.Nd5 Nd5 20.Bd5 cd5 21.Kb2 (21.Kd2 Rd6=) 21...Ke6 (21...Rab8 22.Ka3=) 22.Rc1 (22.a4 Rab8 23.Kb3 a6=) 22...Rdc8 (22...Rdb8 23.a3 a5 24.Kb3=+) 23.a4= Rab8 (23...a6 24.Rc8 Rc8 25.Rc1=) 24.Rc8+= Rc8 25.Rc1 Rc1 (25...Rb8 26.b5 Rb6 27.Kb3+=) 26.Kc1 Kd6 (26...d4 27.ed4 ed4 28.Kd2+-) 27.Kd2+- Kc6 (27...d4 28.ed4 ed4 29.Kd3+=) 28.Kd3 (better 28.Kc3+-) 28...f5 (28...g5+-) 29.e4?? (29.f4 Kd6 30.fe5 Ke5 31.b5+-) 29...f4 (29...fe4 30.fe4 d4 31.g3+=) 30.b5 (30.ed5 Kd5 31.Kc3 e4 32.fe4 Ke4=) 30...Kc5 31.ed5 Kd5 32.a5 Kc5 (32...g5 33.b6 ab6 34.ab6 e4 35.fe4 Kc6 36.e5 Kb6 37.Ke4+-) 33.b6 ab6 34.ab6 Kb6 35.Ke4 Kc5?? (35...Kc6 36.Ke5 Kd7+-) 36.Ke5 Kc4 (36...h6+-) 37.Kf4 Kd5 (37...Kd4 38.Kg5 Ke3 39.f4+-) 38.Kg5 Ke5 39.g3 Ke6 40.Kh6 Kf6 41.h4 (better 41.Kh7 Kf5+-) 41...Kf5 42.Kh7 Kf6 1–0. Jefimow,Bronislaw (1800) – Bielewski,Pavel (1800), Ursus op Poland, 2006.

5.d4 Bg7 6.de5 Be5 7.Be5 de5 8.Qd8 Kd8 9.Nf3 f6 10.Nc3 a5 (10...c6 11.0-0-0 A) 11...Nd7 12.Kb2 (12.Ne4 Kc7 13.Be2 a5 14.b5 Bf5; 12.Be2 Kc7 13.Ne4 a5 14.b5 Bf5) 12...Kc7 13.Ne4 Ne7 14.Bd3 Rhd8; B) 11...Kc7 12.Kb2 (12.Bd3 Nd7 13.Kb2 Ne7 14.Ne4 Rhd8; 12.c5 Nd7 13.Rd6 Bg4 14.Kb2 a5) 12...Nd7 13.Ne4 Ne7 14.h4 Bf5; C) 11...Ke7 12.Kb2 Nh6 13.Ne4 Na6 14.b5 cb5; 10...Nd7 11.Be2 a5 12.b5 (12.ba5 Ra5 13.0-0-0 Ke7 14.Kb2 Nh6) 12...Nh6 13.0-0-0 Ke7 14.Kb2 Nf5) 11.b5 Nd7 (11...Ke7 12.Be2 (12.0-0-0 Nd7 13.Kb2 Nh6 14.h3 Rhd8; 12.Nd2 Nd7 13.0-0-0 f5 14.Be2 Ngf6) 12...Nd7 13.0-0-0 Nh6 14.Kb2 Nf5) 12.0-0-0 (12.Be2 Nh6 13.0-0-0 Ke7 14.Kb2 Nf5; 12.Bd3 Ke7 13.0-0-0 Nc5 14.Be2 Nh6) 12...Rc8 (12...Nh6 13.Ne4 (13.Kb2 Ke7 14.Be2 Nf5) 13...Ke7 14.Be2= Rad8) 13.Ne4 (13.Be2 Ke7+= (13...Nh6 14.Nd5 Bd5) 14.Nd2 Nh6; 13.c5 Ke7 14.c6 bc6) 13...Ke7 14.Kb2 (14.Be2 Rd8=; 14.Kb1 Nh6) 14...b6 (14...Rd8 15.h3=) 15.h3 (15.Be2 f5 16.Neg5 Ngf6=) 15...Nh6= 16.g4 (16.Bd3 Nf5=) 16...Nf7 17.Nh4 (better 17.Be2!?=) 17...Nd6–/+ 18.Nd2 (18.Nd6 cd6 19.Rc1 d5–/+) 18...g5 19.Ng2 (19.Nhf3 h5 20.Rg1 Nc5–/+) 19...h5 20.gh5 (20.Be2 hg4 21.hg4 e4-+) 20...Rh5-+ 21.Ne1 (21.h4 Nc5-+) 21...Rch8 22.f3 (22.Rg1 Bh3 23.Be2 Rh4-+) 22...Nc5 23.Kc3 (23.Nd3 Nd3 (23...Bh3?! 24.Nc5 bc5 25.Bh3 Rh3 26.Rh3 Rh3 27.e4–/+) 24.Bd3 Rh3 25.Rh3 Rh3-+ (25...Bh3?! 26.c5 bc5 27.Rc1–/+)) 23...Nf5 24.Nc2 Ng3 25.Rh2 Nf1 26.Rf1 Rh3 27.Rhf2 (27.Rh3 Rh3 28.Rg1 Na4 29.Kd3 Rh8-+) 27...Rh2 (better 27...Rd8-+) 28.Nb3?? (28.Rh2 Rh2 29.e4 Na4 30.Kd3 g4-+) 28...R2h4 (better 28...Na4 29.Kd2 Bc4-+) 29.e4 (29.Nd2-+) 29…Na4 (29...Na4 30.Kd2 Rd8 31.Kc1 Bc4-+) 0–1. Cerny,Lumir (1730) – Riedel,Miroslav, Decin Treybal op, 2006.

5.Nf3 a5 6.b5 Nd7 (6...Nf6 7.Nc3 Bh6 8.d4 Nbd7 9.Bd3) 7.Nc3 Bh6 8.d4 Ngf6 9.Bd3.

5.f4 Nf6 6.fe5 de5 7.Nf3 e4 (7...Bb4 8.Qa4 Nc6 9.Ne5 Be7 10.Be2) A) 8.Nd4 Bg4 (8...Be7 9.Nc3 0-0 10.Be2) 9.Qc2 Nc6 10.Nc6; B) 8.Ng5 Bb4 9.Qb3 (9.Ne6 fe6 10.Qb3) 9...Nc6 10.Ne6=+ (10.a3).

5.f4 Bg7 6.Nf3 f6 (6...Nh6 7.Be2 0-0 8.fe5 Nc6 9.0-0; 6...Ne7 7.fe5 0-0 8.Nc3 de5 9.Ne4) 7.fe5 (7.d4 ef4 8.ef4 Ne7 9.Kf2; 7.Nc3 Ne7+= 8.Be2 0-0 9.0-0) 7...de5= 8.Qc2 (8.Nc3 Ne7= 9.Qa4) 8...Bf5 (8...Ne7 9.Be2= –0.12/9 (9.Nc3=)) 9.Qb3 (9.Qa4 Nd7=) 9...Nd7 (9...a5!?=) 10.Nc3+= Ne7 (10...a5 11.a3+=) 11.Be2 1–0. Franek,Mieczyslaw – Cebula,Alicja, Cracovia Poland, 2012.

5.f4 Bg7 6.Nh3 Nh6 A) 7.g3 a5 (7...0-0 8.Nc3 a5 9.b5 Nd7 10.Ng5 ef4) 8.Qa4 Qd7 9.Qd7 Nd7 10.Nc3 ef4; B) 7.Qb3 0-0 (7...Bh3 8.gh3 Qh4 9.Kd1 0-0 10.Bg2 c6) 8.Ng5 ef4 9.Bg7 Kg7 10.Qc3 Kg8; C) 7.Ng5 0-0 8.Bd3 (8.Ne6 fe6 9.Nc3 ef4 10.ef4 Rf4; 8.Be2 ef4 9.Bg7 Kg7 10.ef4 Nc6; 8.Qb3 ef4 9.Bg7 Kg7 10.Qc3 Kg8) 8...ef4 9.Bg7 Kg7 10.Ne6 fe6.

6.Nc3 Nd7 7.Bd3 f5 8.Be2 h6 9.d4 e4 10.Nd2 c6 11.0-0 Ne7+= 12.a4 0-0 13.a5 g5 14.h3+/- Nf6 15.Qc2 d5 16.b5 f4 17.a6 ba6 18.Ra6 f3 19.gf3 Bh3 20.Rfa1 Nf5?? 21.fe4+- Nh4 22.Rc6 Qd7 23.e5 Ng4 24.Nd1 Nf2 25.Nf2 Rf2 26.Kf2 Rf8 27.Kg3 h5 28.Bh5 Bf5 29.e4 1–0. pierre – ju_pay, internet, 2009.

6.Nc3 Ne7 7.Be2 0-0 8.d4 ed4 9.Nd4 Bd7 10.b5 Nf5 11.Nc2 c6 12.a4 Be6 13.e4 Ne7 14.0-0 Qc7 15.Nd4 Bc8 16.Rc1 Nd7 17.Nb3 Rd8 18.Qc2 Nf8 19.Nd1 Be5 20.f4 Bb2 21.Qb2 f5 22.Nf2 Ne6 23.g3 c5 24.Rfe1 Rb8 25.Rcd1 b6 26.Bd3 Ng7 27.Bb1 Be6 28.Nd2 Bf7 29.Qc3 fe4 30.Nde4 d5 31.Nf6+- Kh8 32.cd5 Nd5+= 33.Nd5 Bd5 34.h4 Kg8 35.Rd5 Rd5 36.Ba2 Qf7 37.Ng4 Kh8 38.Ne5 Qb7 39.Nc6 Rd7 40.h5 gh5 41.Nb8 Qb8 42.f5 Rd4?? 43.f6+- Rg4? 44.fg7 Rg7 45.Re3 h4 46.g4 Qf8 47.Rf3 Qd6 48.Rd3 Qe7 49.Re3 Qd7?? 50.Rd3 Qg4?? 51.Kf1 Qg5 52.Rf3 Qg2 53.Ke1 Qh1 54.Kd2 Qg2 55.Kc1 Qh1 56.Kb2 Qg2 57.Ka1 Qg1 58.Kb2 Qg2 59.Kc1 Qg5?? 60.Kd1 Qd8 61.Ke1 Qe7?? 62.Re3 Qd8 63.Bf7 h3 64.Re8 Qe8 65.Be8 Kg8 66.Bc6 h2 67.Qh3 Rg1 68.Kf2 Rc1 69.Qg3 (69.Qg3 Kf7 70.Qf4 Ke6 71.Qc1 h5 72.Qh6 Ke7 73.Qg7 Ke6 74.Qa7 Ke5 75.Qb6 c4 76.Qc5 Kf6 77.b6 h4 78.b7 h1Q 79.b8Q Qf1 80.Kf1 h3 81.Qbf8 Ke6 82.Qcd6; 69.Qe6 Kg7 70.Qe7 Kg6 71.Be4 Kh5 72.Qe5 Kh4 73.Qf6 Kg4 74.Bf3 Kh3 75.Qh6) 1–0. Nikitin,Aleksander (2010) – Kowalski,Lukasz (2085), XVIII Int Chess Festival Poland, 2007.

6.d3 Nf6 7.Qc2 0-0 8.Nbd2 Nbd7 9.Be2 Re8 10.0-0 c6 11.d4 ed4 12.Nd4 Rc8 13.Ne6 Re6 14.Nf3 Ne4 15.Bg7 Kg7 16.Nd4 Re7 17.Qb2 Ndf6 18.f3 Ng5 19.e4 Ne6 20.Ne6 Re6 21.Rad1 Qc7 22.c5 dc5 23.bc5 Re5 24.Qc3 (24.Rd6 Qe7 25.Qd4 b6+=) 24...Rce8 (24...Qe7!?=) 25.Rd6+= R5e6 26.Rfd1 Rd6 27.Rd6 (27.cd6!? Qb6 28.Kh1+/-) 27...Re6+= 28.e5 (28.Qd2!?+=) 28...Nd5= 29.Qd4 Qe7?? (better is 29...Qa5!? 30.Bf1 Qa2+=) 30.f4 (30.Bc4 Qg5 31.Bd5 Qc1 32.Kf2 cd5+/-) 30...Kg8 (30...b6 31.Bc4 bc5 32.Qc5 Rd6 33.Qd6 Qd6 34.ed6 Kf6–/+) 31.Bc4+- Rd6 (better is 31...b6!? 32.Bd5 cd5 33.Qd5 bc5+-) 32.cd6 Qh4 33.g3 Qg4 34.Bd5 cd5 35.Qd5 Qe2 36.d7?? Qe1= 37.Kg2 Qe2 38.Kh3 Qh5 39.Kg2 Qe2 40.Kg1 Qe1 41.Kg2 Qe2 ½–½. Fournier,Frederic – REUSKING, Active, 2007.

6.d4 ed4 7.Bd4 Nc6?? 8.Bg7+- Nf6 9.Bh8 Qe7 10.Be2 0-0-0 11.Bf6 Qf6 12.Nbd2 Nb4 13.Nd4 Bd7 14.0-0 d5 15.cd5 Nd5 16.Bf3 h5 17.Bd5 1–0. gtate (1860) – onigiri (1700), net–chess.com, 2003.

6.d4 e4 7.Nfd2 f5 8.Be2 Ne7 9.0-0 Nd7 10.Nc3 Nf6 11.a4 Qd7 12.b5 Ng4? (12...0-0!?+=) 13.Bg4 (13.d5 Bf7 14.Bg4 fg4+-) 13...fg4+/- 14.Nde4 (14.Nce4 0-0+/-) 14...h5 (better 14...Bc4 15.Re1 a6=) 15.d5+/- Bf5 16.Nd2 (better 16.Qd2+/-) 16...h4? (better 16...Bd3 17.Re1 Rf8+/-) 17.e4+- g3 18.ef5 Qf5 19.fg3?? (better 19.hg3 hg3 20.Nde4 Bc3 21.Nc3+-) 19...Bd4-+ 20.Kh1 hg3 21.Nf3 (21.Qh5 Rh5 22.Nf3 Qf3 23.Rf2 Rh2 24.Kg1 Qf2) 21...Qf3!! 22.gf3 (22.Qf3 Rh2 Mate attack; 22.Rf3 Rh2 Mate attack; 22.gf3 Rh2 Mate attack) 22…Rh2 0-1. jhonores (2170) - gamarix (2165), Rated Blitz game, lichess.org, 2020.

6.Be2 Nd7 7.0-0 Ngf6 8.d3 0-0 9.Nbd2 c5 10.b5 a6 11.a4 Nb6 12.Bc3 Nfd7 13.Ba5 (13.a5 Nc8+=) 13...Qe7 14.Ne4? (14.ba6!? Ra6 15.Bc3=) 14...ab5 15.ab5 (15.Bb6!? Nb6 16.ab5 Ra1 17.Qa1+=) 15...f5-+ 16.Neg5 e4 17.Ne6 Ba1?? (better is 17...Qe6 18.Ng5 Qe7 19.Nh7 Kh7-+) 18.Nf8+= Qf8? (better is 18...ef3 19.Nd7 Nd7+/-) 19.Qa1+- ef3 20.Bf3 Ne5 (20...d5 21.Qc3+- (worse is 21.Bd5 Nd5 22.cd5 b6–/+)) 21.Be2?? (better is 21.Bb7!? Ra7 22.Ba6+-) 21...Nbd7 22.Qc3?? (better is 22.Qe1+/-) 22...b6+= 23.Ra1 ba5 24.Ra5 (24.d4!? cd4 25.ed4=) 24...Qd8 25.Ra3 Nb6 26.f4 Nf7 27.Bf3 Ra3 28.Qa3 Qc7 29.g3 Qe7 30.Kf2 Qf6 31.Qa6 Nd7 32.Qc8 Kg7?? 33.Qd7+- Qb2 34.Be2 Qb4 35.Qc6 g5 36.b6 gf4 37.gf4 Nd8 38.Qc7 Nf7 39.b7 1–0. Fournier,Frederic – pecadito, Active, 2008.

6.Be2 Nf6 7.0-0 0-0 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.0-0 Be6).

6.Be2 h6 7.d4+= e4 8.Nfd2 d5 (8...Qg5 9.Ne4 Qh4 10.Nbc3+-) 9.b5 c6 10.a4 a6 11.Nc3 ab5 12.ab5+= Ra1 13.Qa1 Ne7 14.0-0 0-0+= 15.Rc1 f5 16.Qa7 Qc8 17.cd5 Nd5 18.Nd5 Bd5 19.Bc4 Bc4 20.Rc4 f4 21.Qa2 Kh7 22.Ne4 fe3=+ 23.f3 e2 24.Bc3 Qe8 25.bc6?? Qe4!!-+ 26.Qd2 Qb1 27.Kf2 e1Q 28.Qe1 Qe1 29.Ke1 Nc6 30.Kd1? Rd8 31.Ke1 Bd4 32.Bd2 g5 33.Rc2 Rd6 (33...Rd6 34.Rc1 b5-+) 0–1. Tilp,Andreas – Werk, corr, 1987.

5.a3 Nf6 6.Nc3 Nd4 7.h3 b6 8.Nf3= c5 9.bc5 dc5 10.Nd4 ed4–/+ 11.Qa4? Bd7-+ 12.Qc2 Bd6 13.Nd5–/+ Nd5 14.cd5 0-0 15.d3 Qf6 16.f3 Bg3 17.Kd1 Qf4 18.Bc1 Qe5 19.Qd2 f5 20.h4?? Bf4 21.Qf4+- Qf4 22.Bf4 fe4 23.de4 Rf4= 24.Kd2 g6 25.Be2+= a5 26.Rab1+/- Rb8 27.h5 gh5 28.Rh5 Kh8 29.Rbh1+- Rf7 30.Bd3 Rg8 31.g4 Rgg7 32.e5 Be8 33.Be4 b5 34.d6 Bd7 35.Rh6 b4 36.ab4 ab4 37.e6 Be6 38.Re6 Ra7 39.Re8 Rg8 40.Rg8 Kg8 41.Rc1 Rd7 42.Rc5 Rd6 43.Rb5 h6 44.Rb4 Kg7 45.Kd3 Kf6 46.Rd4 Rd4 47.Kd4 Kg5 48.Ke5 h5 49.gh5 Kh5 50.Kf6 Kh4 51.f4 Kg4 52.f5 Kf4 53.Bh1 Kg4 54.Kg6 Kf4 55.f6 Ke5 56.f7 Kd4 57.f8Q Ke5 58.Qb4 Ke6 59.Qc5 Kd7 60.Qc6 Ke7 61.Kg7 Kd8 62.Qb7 Ke8 63.Kf6 Kd8 64.Ke6 Ke8 65.Qe7# 1–0. wlittle – tapza, net–chess.com, 2001.

5.b5 Nd4 6.Bd4 ed4 7.d3 c6 8.a4 (8.Nf3 Qb6=) 8...Qa5 9.Qd2 b6 (9...Qd2!? 10.Nd2 c5=) 10.Qa5+= ba5 11.f4 (11.bc6!? Ne7 12.c7+/-) 11...c5+= 12.Nd2 Bg4 (12...Nh6 13.Be2+=) 13.Be2 Be2 14.Ne2 0-0-0 15.Nb3 Nf6 16.0-0 Ng4 17.Na5 Ne3 18.Rfb1 Kc7 (better is 18...Kd7!?+/-) 19.Nc6+- Re8 20.a5 (better is 20.Na7 Nc2 21.Ra2 Nb4 22.Rb4 cb4+-) 20...Nc2? (better is 20...Kb7+-) 21.Ra2 (21.Na7?! Na1 22.Ra1 f5+-) 21...Nb4 22.Nb4 cb4 23.Rb4 (better is 23.Rc2 g6+-) 23...d5 24.Rb1 (better is 24.b6!? Kb8 25.Rb5 dc4 26.Nd4+-) 24...de4+/- 25.de4 Re4 26.Kf2 Bc5= 27.Kf3 Re3 28.Kf2 d3 29.Nc3 Re6?? 30.Kf1+- Rhe8 31.Nd5 Kd6 32.Rd2 f5?? 33.Rd3+- Rh6 34.Nf6 Ke7 35.Ne8 Ke8 36.Re1 Kf7 37.Rd7 Kg6 38.Re6 Kh5 39.Rh6 Kh6 40.Ke2 Bg1 41.Kf3 Kg6 42.b6! ab6 43.ab6 Bb6 44.Rd6 Kh5 45.Rb6 g5 46.fg5 Kg5 47.c5 h5 48.c6 Kf6 49.c7 Ke5 50.c8Q f4 51.Re6 Kd5 52.Qc6 Kd4 53.Qe4 Kc5 54.Kf4 h4 55.Qc6 Kb4 56.g4 Kb3 57.Re3 (57.Re3 Kb4 58.Re5 Ka3 59.Rb5 h3 60.Qa8#; 57.Qb6 Kc2 58.Rc6 Kd1 59.Qb2 h3 60.Rc1#) 1–0. Baer,Cy (1895) – Witt,Monika (1605), remoteschach.de, 2008.

5.d4 ed4 6.Bd4 Nf6 7.Nc3 Nc6–/+ 8.Nf3 Nd4 9.Nd4=+ a6 10.Be2 0-0 11.0-0 c5 12.bc5 dc5 13.Ne6 fe6 14.e5 Nd7 15.f4 Nb6 16.Rb1 Qd1 17.Rfd1 Rf4? 18.Rb6 Rb8 19.Rdb1 Bd8 20.Rb7 Rb7 21.Rb7 (21.Rb7 Ba5 22.Na4+-) 1–0. coloplayah (1990) – vaidasmp (1820), net–chess.com, 2005.

5.Nf3 Qd7 6.d4= ed4 7.Bd4 Bf6 8.Be2 Nc6=+ 9.Bf6 Nf6 10.b5 Ne7 11.Nc3 0-0 12.0-0 c6 13.a4 a6 14.Qc2 ab5 15.ab5 cb5 16.cb5 Ra1 17.Ra1 Bg4 18.h3 Bf3 19.Bf3 Rc8 20.Qd2 g6 21.Rd1 Rc3? 22.Qc3+- Qb5 23.Qf6 (23.Qf6 Qe5 24.Qd6 Qd6 25.Rd6+-) 1–0. coloplayah (2015) – vaidasmp (1790), net–chess.com, 2005.

5.Nf3 Nd7 6.d4 ed4 7.Bd4 Bf6 8.Nc3 Ne5 9.Be2 Ne7 10.0-0 Nf3 11.Bf3= Bc4 12.Re1 Ng6 13.Qa4 Qd7 14.Qd7 Kd7 15.Bf6 gf6 16.a3 Ne5 17.Bh5 Rhg8 18.f4 Ng6 19.g3? Nf4-+ 20.Kf2 0–1. coloplayah (2035) – alexp (2110), net–chess.com, 2005.

5.ef5 Bf5 6.d4 Nc6 7.Qa4 Qd7 8.de5 Ne5 9.b5 Nf6 10.Be2 Bd3 11.Be5 de5–/+ 12.Nf3? Be2 13.Ke2 Bd6 14.Rd1 Qf5 15.b6= Qd7 16.Qd7 Nd7 17.bc7 Bc7 18.Nc3 0-0-0 19.Rd5 Nb6 (19...Nb6 20.Rd8 Rd8=). pituflu – reddragonx (1745), internet, 2007.

5.ef5 Bf5 6.d4 ed4 7.Qh5 Bg6 8.Qb5 Nc6 9.Ne2 Qd7 10.Nd4 Nd4 11.Bd4 =.

5.ef5 Bf5 6.Qf3 Qc8 7.h3 e4 8.Qg3 Nf6 9.Be2 Nh5?? 10.Bh5+- g6 11.Bg6! Bg6 12.Bh8 Nc6 13.Qc3 Qe6 14.Bf6 Be7 15.Be7 Qe7 16.Qh8 Qf8 17.Qf8 Kf8 18.a3 Nd4 19.Ra2 Re8 20.Nc3 c6 21.Nge2 Nf5 22.0-0 b6 23.a4 Bf7 24.f3 Bc4 25.fe4 Ke7 26.ef5 Ba2 27.Na2 Kf6 28.Nd4 c5 29.Nb5 Re2 30.Nd6 Ke5 31.f6 Kd6 32.f7 Rd2 33.f8Q Kc6 34.b5 Kc7 35.Qf4 (35.Qf4 Kc8 36.Qd2 h5 37.Rf8 Kc7 38.Qd8 Kb7 39.Qe7#; 35.Qe7 Rd7 36.Qe5 Kb7 37.Qe4 Kc7 38.Qc6 Kd8 39.Rf8 Ke7 40.Qf6#) 1–0. KlausMueller – adamant, playchess.de, 2002.

5.ef5 Bf5 6.Nf3 Nf6 7.Be2 Be7 8.0-0 0-0 9.Qb3 Nh5 10.d4 Nf4 11.Re1 =+.

5.Nc3 Nc6 6.a3 Be7 7.Nf3 0-0 8.d3 a6 9.Be2 Nd7 10.0-0 f5 11.ef5 Bf5 12.Nd5 Nb6 13.Ne7 Qe7= 14.Nd2 Na4?? 15.Qa4+- Rf6 16.Ne4 Rg6 17.Ng3 Bd7 18.Qc2 Rf8 19.Bf3 Rf3 20.gf3 h5 21.Kh1 Qf6 22.Qe2 Nd4 23.Bd4 Bc6 24.Ne4 Qh4 25.Be3 Bd7 26.Rg1 Bg4 27.Rg3 c6 28.Bg5! Rg5 29.Ng5 Qg5 30.fg4 hg4 31.Rg4 (31.Rg4 Qh6 32.Rag1+-) 1–0. Zielke,Bernd (1640) – Terwitte,Jakob, It (open) Kiel (Germany), 2006.

5.Nc3 Nc6 6.a3 Be7 7.Nf3 0-0 8.Be2 Nd4 9.Nd4 ed4 10.Nb1 Ne4=+ 11.Bd4 Bf6–/+ 12.Bc3 a5 13.b5 Nc3 14.Nc3 Re8 15.0-0 Bd4 16.Qc2 Qh4 17.Bd3 Be5 18.g3 Qh3 19.Rae1 Kh8 20.Ne4 Rad8 21.Ng5= Qh5 22.h4 h6 23.Ne6 Re6+= 24.Be2 Qg6 25.Qg6 Rg6 26.Bf3 Bg3?? 27.fg3+- Rg3 28.Kh2 (28…Rg6 29.Bb7+-) 1–0. Wall,Bill – Colmo, Internet, 2003.

5.Nc3 Nc6 6.b5 Ne7 7.h3 Nd7 8.Nf3 c6 9.Ng5 cb5 10.Ne6 fe6 11.Qh5 Ng6= 12.Nb5 Nf6 13.Qf3 Be7 14.0-0-0 d5 15.d4 Nh4 16.Qd3? dc4?? 17.Qg3 Nh5?? 18.Qe5+- Nf6? 19.Nc7 Kf7 20.Qe6 Kf8 21.Bc4 Nd5 22.Bd5 Qc7 23.Kb1 Bb4 24.Rc1 Qe7 25.Rc8 Rc8 26.Qc8 Qe8 27.Rc1 Ng6 28.Qf5 (28.Qf5 Ke7 29.Qe6 Kf8 30.Rc8 Qc8 31.Qf7#) 1–0. Ross,John – Bresciani,Benny, QN.1998.0.00017, 1998.

5.Nc3 Be7 6.d4 ed4–/+ 7.Qd4 0-0 (7...Nc6!? 8.Qd1 Nb4–/+) 8.b5+= Nbd7 (8...a6 9.Nf3+=) 9.f4 (9.Nf3 Nc5=) 9...Nc5+= 10.Nf3 Ng4 (10...Re8 11.Be2=) 11.Nd5 Bd5?? (better is 11...f6=) 12.Qg7 (12.ed5?? Bf6 13.Ne5 Qe7-+ (13...de5?! 14.Qc5 ef4 15.0-0-0-+); 12.cd5?! Nf6 13.Bd3 Nh5+=; worse is 12.Qd5 Ne3 13.Qd2 Nf1–/+). Baer,Cy (1895) – Silies,Martin (1850), RSS7E easy–44, 2007.

5.Nc3 Be7 6.Nf3 0-0 7.d4 ed4 8.Nd4 Nbd7 9.Be2 Rc8 10.0-0+= c6 11.a4 Qc7 12.Rc1 d5?? 13.cd5+- cd5 14.Nd5 (14.Nd5 Bd5 15.Rc7 (15.ed5?! Qf4+/-) 15...Rc7 16.Nb5+-; 14.Ne6?! fe6 15.Nd5 Qd6 16.Nf6 gf6+-) 1–0. wlittle (2125) – nickbarletta (2070), net–chess.com, 2004.

5.Nc3 Be7 6.Nf3 c5 7.bc5 dc5 8.Ne5 Nbd7 9.Nf3 Nb6 10.Be2 Nc4 11.Qa4 Qd7= 12.Bc4 Qa4 13.Bb5 Qb5=+ 14.Nb5 0-0 15.d3 a6 16.Nc7= Rac8 17.Ne6 fe6 18.0-0 Rfd8 19.Rfd1 Kf7 20.Ng5+/- Kg8 21.Ne6 Rd6 22.Nf4 Rcd8? 23.Rab1 R6d7 24.Ne6 Rc8 25.Rbc1 Rc6+/- 26.Bf6 Bf6 27.Nc5+- Rdc7 28.Nb3 Rc2 29.Rc2 Rc2 30.a4 Rb2+/- 31.Nc5 Bd4 32.Ne6+/- Bf2 33.Kf1 Be3 34.g3?? Rf2 35.Ke1= Rh2 36.Nf4 Bf2=+ 37.Ke2 Bg3 38.Kf3 Bf4 39.Kf4 h5 40.e5 Kf7 41.d4 Re2 42.d5 h4 43.Rh1 Rd2 44.Ke4= Ra2 45.Rb1 Ra4–/+ 46.Kf5 b5 47.e6= Ke7 48.Ke5 Ra2 49.d6+/- Ke8 50.Rc1 Re2 51.Kf5 (51.Kf5 Kd8 52.d7+/-) 1–0. wlittle (1830) – ajd (1725), net–chess.com, 2001.

5.Nc3 Be7 6.Nf3 h6 7.d4 Nbd7 8.h3 ed4 9.Nd4 Ne5 10.Qb3 Bd7 11.Be2 c5 (11...Ng6 12.Rd1=) 12.Nc2 (12.bc5 dc5 13.Nc2 Ng6+=) 12...0-0 (12...cb4 13.Nb4 (worse is 13.Qb4 a5 14.Qa3 Rc8–/+) 13...b6 14.Rb1+=) 13.b5 White gains space (13.bc5 dc5 14.Rd1 Nc6+=) 13...a5 (13...a6 14.Na3=) 14.a4 (14.Ne3 Bc8+=) 14...b6 (14...Ng6 15.Na3=) 15.Ne3 Ng6 16.g3 Prevents intrusion on f4+h4 (16.Qc2 Be6=) 16...Be6 (16...Re8 17.Qc2=) 17.f4 (17.Rd1 Ne8=) 17...Nh8 (17...Bc8 18.Bg4=) 18.0-0-0 (18.Bf3 Nh7+/-) 18...Qc7 (18...Qe8 19.g4 Qb8 20.h4+/-) 19.h4 Qb7 (19...Bc8 20.Ned5 Nd5 21.Nd5+-) 20.Qc2 White has an active position 20...Rad8 21.g4 Ne8? (better is 21...Nh7!?+/-) 22.g5+- f6?? an oversight. But Black was lost anyway. (22...Ng6 23.gh6 Nf4 (23...gh6?? 24.Ncd5+-) 24.hg7 Ng7+-) 23.gh6 gh6 (23...Nf7 the last chance for counterplay 24.hg7 Ng7+-) 24.Rhg1 Ng7 25.Bf3 Kf7 26.Rg7! Kg7 27.Rg1 Kf7 28.Bh5 Ng6 29.f5 Ke8 30.fe6 (30.fe6 Rb8 31.Rg6+-) 1–0. Karacsony,Istvan – Rasztik,Sandor (2010), HUN–chT2 Asztalos, 2003.

5.Nc3 g6 6.Nf3= Bg7 7.d3 0-0 8.h3 Nh5 9.Bc1 f5 10.Bg5 Qd7 11.ef5 gf5 (worse is 11...Rf5 12.g4 Rg5 13.Ng5+/-; 11...Bf5?! 12.Qd2 Nf4 13.Ne4+=) 12.Bd2 Nf6 13.Be2 Nc6 14.a3 e4 15.Ng5 ed3 16.Bd3 Rae8 17.0-0 Bf7 18.Nf7 Rf7 19.Qc2 Nd4 20.Qd1 Rfe7 21.Be3 c5 (21...Nc6 22.Ra2+=) 22.Ra2 Ne4 23.Nd5 Rf7 24.Qb1 b6 25.b5 Re5 26.Bd4 cd4 27.Rc2 Nc5 28.Rd2 Nd3 29.Rd3 f4 30.Rf3 Ref5 31.Re1 Be5 32.Re4 Rg5 33.Kf1 (33.Qd3!?+/-) 33...Qe6+= 34.Qd3 Attacks the isolani on d4 (34.Re2!?+=) 34...Qg6= 35.Rff4?? (better is 35.Re1 Qg7 36.Ke2=) 35...Bf4-+ 36.Re8? (36.Rd4 Qd3 37.Rd3-+) 36...Kg7 37.Qg6 Rg6 38.g3 Bg3 (38...Bg3 39.Re2 Be5-+) 0–1. Palfray,Jacques – Epstein,Raphael (1745), Massy, 2009.

5.d3 Be7 6.Nf3 0-0 7.Be2 a6 8.Nbd2 Nc6 9.b5 ab5 10.cb5 Na7 11.a4 b6 12.0-0 c6 13.bc6 Nc6 14.Rc1 Rc8 15.Ba3 Qd7 16.h4 Ra8 17.g3 Ra4?? 18.Qa4+- (18.Qa4 Nd4 19.Qd1 Ne2 20.Qe2+-) 1–0. guest329 – guest567, ICC, 1999.

5.d3 Be7 6.Nf3 0-0 7.Be2 c6 8.0-0 =.

5.d3 Be7 6.Nf3 0-0 7.Be2 h6 8.0-0 Nbd7 9.Nbd2 c5 10.bc5 Nc5 11.Nb3 b6 12.Nc5 bc5 13.Qc2 Rb8 14.Rfb1 Qc7 15.Bc3 Nd7 16.Rb8 Rb8 17.Rb1 Rb1 18.Qb1 Qb6 19.Qb5 Nb8 20.Qb6 ab6 21.a4 Nc6 22.Bd1 Bd8 23.Nd2 Bd7 24.Nf1 Na5 25.Ba5 ba5=+ 26.Nd2 Bb6 27.Nb3? Ba4-+ 28.g3 Kf8 29.f4 f6 30.f5 Kf7 31.h4 g6 32.g4 gf5 33.gf5 Be8 34.Bh5–/+ Ke7 35.Be8 Ke8 36.h5 a4 37.Nd2? a3 38.Nb3 Kd7?? 39.Kf1? Kc7?? 40.Ke1+= Kb7 41.Kd1 Ka6 42.Kc1 Ba5 43.Kb1 Bb4 44.Ka2+= Kb6 45.Na1 Ka5 46.Nc2 Ka4 47.Na1 Bc3 48.Nc2 Bb2 49.Ne3 Kb4?? 50.Nd5 Ka4 51.Nf6 Kb4 52.Nd5 Ka5 53.f6 Bd4 54.f7 Bf2 55.f8Q Ka6 56.Qa8 1–0. kamera (1660) – sead (1885), GameColony.com, 2002.

5.d3 g6 6.g3 Bg7 7.Bg2 0-0 8.Ne2 Nfd7 9.0-0= Nc6 10.a3 f5 11.ef5 Bf5 12.b5 Nd4 13.Nd4+/- ed4 14.Bb7 Nc5 15.Be4 Ne4+= 16.de4 Bh3 17.Re1 c5 18.Nd2 Bh6 19.f4+= Bf4? 20.gf4+- Rf4 21.Nf3?? Qf6?? 22.Re3?? de3 23.Qd5–/+ Qe6 24.Qa8 Rf8 25.Qd5 Qd5 26.ed5 Rf3 (26...Rf3 27.b6 e2 28.Rb1 Rf1 29.Rf1 ef1Q#) 0–1. De Visser,Arno (1810) – Ruijgrok,Dennis (2110), Nova College op, 2002.

4.Qc2 Be6 5.e3 a6 (5...Nf6 6.Nf3=+) 6.Nf3 Nf6 7.Be2 0-0 8.d3 Nbd7 9.Nbd2 c6 10.d4 ed4 (10...e4 11.Ng5 Bf5 12.Nge4 Ne4 13.Ne4=) 11.Nd4 Bg4 (11...a5 12.b5 cb5 13.cb5=) 12.Bg4+= Ng4 13.N2f3 (13.0-0 Re8+=) 13...Nde5 (13...a5 14.b5 Qc7 15.Nf5+=) 14.Rd1 d5 15.Ne5 (better 15.c5!?=) 15...Bb4-/+ 16.Bc3 Bc3 17.Qc3 Ne5 18.cd5 cd5 (18...Qd5 19.0-0 Qa2 20.f4-/+) 19.0-0 Qd7 (19...Rc8 20.Qb3 Qd7 21.Nc2=+) 20.Qb3 (20.Ne2 Rfe8=) 20...Rfd8 21.Ne2 Attacks the isolani on d5 21...Qb5 (21...Rac8 22.Rd4 Rc5 23.Rfd1=+) 22.Qb5 (22.Nf4 Qb3 23.ab3 Rac8 24.Nd5 Kf8=) 22...ab5=+ 23.Rd2 Nc4 24.Rc2 b4 25.Rd1 Ra3?? (25...g5 26.h4 h6 27.Nd4=+) 26.g3?? (better 26.Rc4 Ra2 27.Rd5 Ra1 28.Nc1+-) 26...b5=+ 27.Nf4 Rc3 28.Re2 Nb6 29.Rb2 g5 30.Ne2 Nc4 (30...Rc4 31.Rdb1=) 31.Rb4 Rc2 32.Nd4 Ra2 33.Rb5 Ne5 34.Kg2 (34.Nf5 Nf3 35.Kg2 Nd2+=) 34...h6?? (better 34...Ng4 35.Rdb1 Ne3 36.Kg1 Ng4-/+) 35.h3+/- Rc8 (35...Kh7!?+/-) 36.Rd5 Ng6 37.Nf5 Raa8? (better 37...Kh7+-) 38.Nh6 Kg7 39.Nf5 Kh7 (39...Kf8 40.Nd6 Rd8 41.Rg5+-) 40.Rd7 (40.Nd6 Rc7 41.Rg5 Rca7+-) 40...Rf8 (40...Ne5 41.Re7 Re8 42.Re8 Re8 43.f4+-) 41.R1d5 Rae8 (41...Nh8 42.Nd4 Kh6 43.Kf3+-) 42.Nd4 (better 42.Nd6 Re7 43.Re7 Ne7 44.Rg5+-) 42...Re6 (42...Ne5 43.Ra7+-) 43.Rg5 (better 43.Ne6 Kg8 44.Nf8 Kf8 45.Rg5+-) 43...Rf6 (43...Re7 44.Rd6+-) 44.Nf5 Rf5 (44...Ne5 45.Rc7 Ng6 46.h4+-) 45.Rf5 Kg7 46.h4 Re8 (46...Nh8 47.h5+-) 47.h5 (47.Rff7!? Kh8 48.Rh7 Kg8 49.Rhg7 Kh8 50.Rg6 Re4+-) 47...Re6 (47...Nh8+-) 48.Rff7 Kh6 49.hg6 Kg5 (49...Kg6 50.f4 Re8 51.Rg7 Kf6+-) 50.g7 Rg6 (50...Kh6 51.g8Q Rg6 52.Qh7 Kg5 53.Qh4) 51.Rd8 (51.f4 Kh6 52.Rf6 Kh7 53.Rg6 Kg6 54.g8Q Kf5 55.g4 Kf6 56.Qf7) 51...Rg7 52.Rg7 Kh6 (52...Kf6 53.Rgd7 Kf5 54.Rd5 Kf6 55.R8d7 Ke6 56.f4 Kf6 57.g4 Ke6 58.R5d6) 53.Rg4 Kh5 54.f3 Kh6 55.Rd1 (55.Rh8) 55...Kh7 (55...Kh5 56.Rh1) 56.Rh1 1-0. bjoernsen (2225) - ROFLER (2235), Rated Blitz game, lichess.org, 2016.

4.Nc3 b6 5.Nf3 Nf6 6.b5 0-0 7.e3 Bb7 8.a4 Nbd7 9.Be2 c5 10.d4 cd4 11.ed4 Qc7 12.0-0 Rac8 13.Rc1 e4 14.Nd2+= Rfe8 15.Re1 d5 16.cd5 Qf4 17.g3 Qg5 18.Nde4+/- Ne4 (18...Ne4 19.Ne4 Qd5+/-). Veer,Hans – Ullmann,Gregory, corr, 1997.

4.c5 Bf6 5.c6 Nc6–/+ 6.b5 Nb8 7.Nf3 Ne7 8.e3 Ng6 9.Be2 0-0 10.d4 e4 11.Nfd2 d5 12.0-0 c6 13.f3 Bf5 14.fe4= Be4 15.Ne4 de4 16.Qc2 Re8 17.Nc3 Qe7 18.a4 Nd7 19.Ba3 Qe6 20.d5? cd5-+ 21.Rad1 Nb6 22.a5 Nc4 23.Bc4 dc4 24.Nd5 Be5 25.Qc4 b6 26.ab6 ab6 27.Bb4 h6 28.Kh1=+ Bb8 29.Nc7?? Bc7 30.Qc7–/+ Rac8 31.Qb7 Rc4 32.Bd2 Qe5?? 33.Qf7+- Kh7 34.Bc3 Qc3 (35.Qe8 Qe5+-; better is 34...Rc3 35.Qb7 Rb8-+) 0–1. revbodio2 – Hemi, Live Game Caissa's Web, 2004.

4.d3 d5 5.Qb3 dc4=+ 6.dc4 Bf6 7.Nc3= Ne7 8.Rd1+= Nd7 9.Nf3 0-0 10.e4 h6 11.Be2 Nc6 12.Nd5 Nb6?? 13.Nb6+- Qe7 14.Na8 Bg4 15.Nc7! Qc7 16.h3 Bf3 17.Bf3 a5 18.b5 Nd4 19.Bd4 ed4 20.0-0 b6 21.g3 Be5 22.Bg2 Rd8 23.f4 Bf6 24.e5 Be7 25.Bd5 Qc5 26.Kg2 Kf8 27.Rf3 g6 28.Qd3 Kg7 29.Qd4 1–0. dimitris – Lion King, internet, 2007.

4.d3 Nf6 5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.d3).

4.e4 Nf6 5.Nc3 0-0 6.Nf3 Nc6 7.b5 Nb8 8.Be2 h6 9.0-0 Be6 10.d4 ed4 11.Nd4 Nbd7 12.Ne6 fe6 13.f4 Nc5 14.e5 de5 15.fe5 Nfd7 16.Rf8 Qf8 17.Qf1 Ne5–/+ 18.Qf8 Rf8 19.Rf1 Bd6 20.Rf8 Kf8 21.Nd1 Na4 22.Be5 Be5 23.g3 Kf7 24.Kf2 Ke7 25.Ke3 Kd6 26.Ke4 Nc5 27.Ke3 Bf6 28.Bf3 c6 29.bc6 bc6 30.Nf2 Ke5 31.Bc6 Bg5–/+ 32.Ke2 Kd4 33.h4 Bf6 34.Kd2 Kc4 35.Kc2 a5 36.Ne4–/+ Ne4 37.Be4 Bd4 38.h5 Bf2 39.g4 Kd4 40.Bg6 e5 41.Kb3 e4-+ (41...e4 42.Kc2 Ke3-+) 0–1. KHW – chessH, ChessWorld.net, 2001.

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

4.Nf3 Bf6 5.Qc2 Ne7 6.e3 Ng6 7.Be2 0-0 8.0-0 Bg4 9.Nc3 Nc6 10.a3 Re8 11.h3 Bf3 12.Bf3 (worse is 12.gf3 Qd7 13.Kh2 Nd4+=) 12...Nh4 13.Be4 g6 14.g3 h5? (better is 14...Nf5+/-) 15.gh4 Bh4 16.Bd5 Qg5 17.Kh1 Qf6 (17...Qf5 18.Qf5 gf5 19.f4+-) 18.f4 Qe7 (18...Qg7 19.fe5 Ne5+-) 19.Qg6 Kh8 20.Qh6 Kg8 21.Rg1 (21.Rg1 Bg5 22.fe5 Ne5 23.Rg5 Qg5 24.Qg5 Kf8 25.Nb5 a6 26.Qf6 Rac8 27.Be5 Re6 28.Be6 Ke8 29.Qf7 Kd8 30.Bf6) 1–0. Fournier,Frederic (1795) – Putri, chess.com, 2009.

4.g3 a5 5.b5 f5 6.Bg2= Nf6 7.Nf3 0-0 8.0-0 Nbd7 9.Nc3 Qe8 10.Rc1 Qh5 11.Qc2 f4 12.d4 fg3 13.hg3 Ng4 14.Rfd1= ed4 15.Nd5+= Bg5 16.Nc7 Nde5? 17.Bd4?? Nf3? 18.ef3+/- Qh2 19.Kf1 Ne3 20.Be3 Be3 21.Re1 Bc1–/+ 22.Na8? Bh3-+ 23.Bh3 Qh1 24.Ke2 Qf3 25.Kf1 Qh1 26.Ke2 Re8 27.Kd3 Qf3 28.Re3 Re3 29.fe3 Qe3# 0–1. Czaplinski – Rovner, Leningrad, 1956.

4.g3 Nf6 5.Bg2 (--> 1.b4 e5 2.Bb2 d6 3.g3 Nf6 4.Bg2 Be7 5.c4).

5.a4 a6 6.e3 ab5 7.ab5 Ra1 8.Ba1 c6 9.Nf3 cb5 10.cb5 Bd7 11.Be2 0-0 12.0-0 Qa5 Exerts pressure on the isolated pawn 13.Nc3 Rc8 14.Qb3 Be6 15.Qb2 Nbd7 16.d4 e4 17.Ng5 Bc4 (17...d5!?=) 18.Bc4+/- Rc4 19.Nce4 (19.Nge4 Ne4 20.Ne4 d5+=) 19...Ne4 (19...h6 20.Nf6 Nf6 21.Nf3+=) 20.Ne4+= d5 21.Nc3 Bb4? (better 21...Nf6!?+=) 22.Nd5+- Qb5 23.Nf4 (23.e4!? Qa4+-) 23...Nf6 24.d5 h6 25.h3 Qc5 (25...Qa6 26.Qe5+/-) 26.Qe5 (26.Nd3 Bc3 27.Nc5 Bb2 28.Bb2 Rc5 29.Bf6 gf6+-) 26...Qd6 (26...Qc8 27.Rb1+/-) 27.Rd1 (better 27.Qd6 Bd6 28.Bf6 gf6 29.Rb1+-) 27...Rc5?? (27...Qd7 28.Nh5 Nh5 29.Qh5+/-) 28.Qf5 (better 28.Qd6 Kh7 29.Qb6+-) 28...Bc3 29.Bc3 Rc3 30.Rb1 b6 31.h4 (31.e4 g6 32.Ng6 Nd5 33.Qd5 Qg6 34.Qd8 Kh7 35.Rb6 Rc1 36.Kh2 Qe4 37.Rh6 Kh6 38.Qd2 Kg6 39.Qc1 f5+-) 31...Rc5 (31...g6 32.Qh3+=) 32.Qd3 (32.e4 g6 33.Ng6 Nd5 34.ed5 fg6 35.Qe6 Qe6 36.de6 b5+=) 32...b5 (32...g5 33.hg5 hg5=) 33.Rb5 (better 33.Ra1 g6 34.h5 Nh5 35.Nh5 gh5 36.Rd1+/-) 33...Rb5?? (better 33...Rc1 34.Kh2 g5=+) 34.Qb5+- g5 35.hg5 hg5 36.Nh3 Nd5 (36...Qe5 37.Qb6+-) 37.Ng5 Qg6?? (37...Nf6+-) 38.Qd5 Qb1 39.Kh2 Qg6 40.Nh3 (better 40.Nf7 Kg7+-) 40...Kg7 41.Qg5 Qg5 (41...Kh7 42.Qe7 Kg8 43.Ng5+-) 42.Ng5 Kg8 (42...f5 43.f4+-) 43.Nf3 (better 43.Nf7!? Kf8+-) 43...f6 44.Kg3 f5 (44...Kh8 45.Ne5!+-) 45.Kf4 Kf7 46.Kf5 Ke7 47.e4 1-0. BeepBeepImAJeep (2575) - chrissyplaya (2035), lichess.org, 2017.

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

5.e3 Nd7 6.d4 Ngf6 7.Nf3 0-0 8.Be2 a6 9.Qb3 b5 10.c5 a5 11.de5 de5 12.a3= Qc7 13.0-0 a4 14.Qc2+= Re8 15.Ne4 Ne4 16.Qe4 Ra7 17.Be5 Bf6 18.Bc7 Re4 19.Bd6 Ba1 20.Ra1 Re8 21.Nd4+- Bb7 22.Bf3 Nb8 23.Bb8 Rb8 24.Bc6 Ba6 25.f4 Kf8 26.Kf2 g6 27.Rd1 Rc7 28.Bf3 Bc8? 29.Nc6 Rbb7 30.Rd8 Kg7 31.Nd4 Rb8 32.Bc6 Kf6 33.Bb5 Ra8 34.Bc6 Ra6 35.b5 Rac6 36.Nc6 Bb7 37.e4 Kg7 38.Rd6 f5 39.e5 Kf7 40.e6 (40.e6 Kf6 41.e7 Kf7 42.Rf6 Kf6 43.e8Q Rc6 44.bc6+-) 1–0. Katalymov,Boris – Suetin,Alexey, Moscow, 1959.

5.e3 Nf6 6.d4 =.

5.Nf3 Qb6 6.a3 Nf6 =.

5.Nf3 Bg4 6.d4 Bf3 7.ef3 ed4 8.Ne4 Qb6?? 9.a3?? c5=+ 10.Be2 Nf6 11.Rb1 Ne4 12.fe4 Bf6 13.0-0 cb4 14.ab4 Qb4? 15.Bd4+- Qa3?? 16.Bf6 gf6 17.Bh5 b6?? 18.Re1 Nc6? 19.Qd5+- Nd8 20.Qa8 1–0. wlittle (2185) – dovlov (1850), net–chess.com, 2004.

5.e3 Qd7 6.d4 ed4 7.ed4 c6 8.Nf3 h6 9.Bd3+= Nf6 10.0-0 0-0 11.Ne4 Ne4–/+ 12.Be4 Bc4 13.Re1 Bf6 14.Bb1 d5 15.Qc2 g6 16.h4 Kg7 17.h5 Qg4 18.hg6=+ fg6 19.Ne5 Be5 20.de5 Na6 21.e6+= Kh7 22.Qc3 Rg8 23.e7?? Rae8+/- 24.a4 b5 25.ab5 Bb5 26.Bc2 Nc7 27.Ra7 Ne6 28.f3 Qg5 29.Re6 Be2 30.Re2 h5 31.Re5 Qh6 32.Re6 1–0. wlittle (2155) – vaidasmp (1710), net–chess.com, 2005.

5.e3 Nd7 6.Nf3 Nh6 7.d4 ed4 8.ed4 a6 9.d5+= Bg4 10.Be2 Bf3 11.Bf3+= 0-0 12.0-0 Bf6 13.Qc2 Ne5 14.Be2 b6 15.Ne4 g6 16.Nf6 Qf6 17.f4 Qe7 18.fe5 de5 19.Rae1 f6 20.Bf3 Qb4 21.d6! Ra7 22.d7 Qc5 23.Kh1 Rd8 24.Bd5 Kg7 25.Be6 Nf5? 26.Bf5 gf5 27.Qf5 Qc4 28.Qf6 Kg8 29.Be5 Rd7 (29...Qf1 30.Rf1 Rd7 31.Qf8) 1–0. alaamattar (2145) – kenc (2040), net–chess.com, 2006.

5.e3 Nf6 6.Nf3 a5 A) 7.ba5 Nbd7 (7...0-0 8.d4 ed4 9.Nd4 Nbd7 10.Be2 Ra5 11.0-0 Ra8 12.Re1 Nc5=; 7...Ra5 8.d4 Nbd7 9.Qb3 ed4 10.ed4 b6 11.Bd3 0-0 12.0-0 Re8=; 7...Nc6 8.d4 Bg4 9.a6 Ra6 10.d5 Na7 11.Bd3 Ra5 12.h3 Bh5=) 8.d4 ed4 9.ed4 0-0 10.Qb3 c6 11.Ng5 Bf5 12.Be2 Qa5+=; B) 7.Qa4 Nbd7 (7...Qd7 8.b5 Bf5 9.Be2 0-0 10.0-0 Bg4 11.Nd5 Nd5 12.cd5 f5=; 7...Bd7 8.b5 Bg4 9.Be2 Nbd7 10.Qc2 c6 11.0-0 cb5 12.Nb5 e4=; 7...Nfd7 8.d4 0-0 9.ba5 Nb6 10.Qb3 Ra5 11.Bd3 ed4 12.Nd4 N8d7=) 8.d4 ab4 9.Qb4 ed4 10.ed4 d5 11.Qb3 dc4 12.Bc4 Bc4+=; C) 7.b5 0-0 (7...Nbd7 8.Ng5 0-0 9.Ne6 fe6 10.Be2 e4 11.0-0 Nc5 12.f3 d5=; 7...Bf5 8.Be2 0-0 9.d4 Nbd7 10.Nh4 ed4 11.Nf5 dc3 12.Bc3 Re8+=; 7...Bg4 8.Be2 0-0 9.0-0 Nbd7 10.d4 Re8 11.h3 Bh5 12.g4 Bg6=) 8.Be2 Nbd7 9.d4 ed4 10.Nd4 Qe8 11.0-0 Nc5 12.Na4 Nfe4=.

5.e3 Nf6 6.Nf3 Nbd7 7.d4 (7.Ng5 0-0 (7...Bg4 8.f3 Bh5 9.Be2 h6 10.Nge4 Ne4 11.fe4 Be2 12.Qe2 Nf6=; 7...a5 8.Ne6 fe6 9.b5 0-0 10.Be2 e4 11.0-0 Nc5 12.f3 d5=; 7...Nf8 8.Be2 d5 9.Qb3 dc4 10.Bc4 Qd7 11.Rd1 Bc4 12.Qc4 Bd6+=) 8.Ne6 fe6 9.Be2 d5 10.a3 a5 11.b5 Nc5 12.d4 ed4=; 7.Be2 d5 (7...a5 8.b5 Nb6 9.d3 0-0 10.0-0 a4 11.a3 Qd7 12.Ng5 d5=; 7...Nb6 8.d3 a5 9.b5 0-0 10.0-0 a4 11.a3 Qd7 12.Ng5 d5=; 7...0-0 8.0-0 a5 9.b5 Nb6 10.d3 a4 11.a3 Nfd7 12.Nd2 Re8=) 8.cd5 Nd5 9.a3 0-0 10.0-0 N5b6 11.d4 a5 12.d5 ab4=) 7...e4 (7...a5 8.b5 0-0 9.Be2 ed4 10.Nd4 Qe8 11.0-0 Ne5 12.Ne6 fe6=; 7...0-0 8.d5 Bg4 9.h3 Bh5 10.Bd3 Nb6 11.0-0 a5 12.a3 Qd7=; 7...Bg4 8.h3 Bh5 9.g4 Bg6 10.Nh4 ed4 11.Ng6 hg6 12.ed4 d5=) 8.Nd2 Bf5 (8...d5 9.cd5 Nd5 10.Nce4 Bb4 11.a3 Be7 12.Bc4 0-0=) 9.Be2 (9.a3 c6 10.Be2 d5 11.0-0 0-0 12.cd5 cd5=) 9...0-0 (9...d5 10.g4 Bg6 11.a3 a5 12.g5 Ng8+=) 10.g4 Bg6 11.h4 h5 12.g5 Ng4 (12...Ne8+/- 1.25) 13.Bg4 (13.Nde4?! Be4 14.Ne4 d5 15.cd5 Bb4 16.Bc3 Bc3 17.Nc3 Nb6+/-; 13.Nce4?! d5 14.Nc5 b6+/-) 13...hg4 14.Qg4 (worse is 14.Nce4 d5 15.cd5 Nb6+/-; worse is 14.Nde4 Nb6 15.Nd2 Bh5+/-) 14...f5 (better is 14...Bh7+-) 15.gf6! Rf6 (15...Nf6 16.Qe6 Double attack (16.Qg6 Discovered attack); 15...Bf6 16.Qe6 Double attack (16.Qg6 Discovered attack); 15...Rf6 16.Rg1 Combination; 15...gf6 16.Qg6 Mate attack) 16.Nd5 Bf5 (16...Bh7 17.Nf6 Nf6+-) 17.Nf6 (17.Nf6 Nf6 18.Qf5+-) 1–0. Martinez Rodriguez,E – Rodriguez Antuna,R, Asturias–chT Preferente, 2000.

(--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.Nc3 Be7).

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

5.e3 0-0 6.Nf3 Bg4 7.Be2 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0 7.Nc3).

5.Bd4 Nf6 6.Nc3 0-0 7.e4 Bg4 8.Be2= Be2 9.Nge2 c6 10.0-0+= a6 11.e5 de5=+ 12.Be5 Qd1 13.Rfd1 Bb4 14.Na4 Nbd7=+ 15.Bd4 Rad8 16.c5? Nd5 17.a3 Ba5 18.Rdb1 Rb8 19.Nc1 f6 20.Nb3 Bc7 21.Nd2 Rfe8 22.Nc4 Re4 23.Rd1 h6 24.Nc3? Nc3-+ 25.Bc3 Nc5 26.Rd4? Re2 27.Re1 Rc2 28.Bb4 Be5! 29.Ne5 fe5 30.Rd2? Rd2-+ 31.Bd2 e4 32.Be3? Nd3 (32...Nd3 33.Rd1 c5-+) 0–1. gtate (1900) – parasapas (2000), net–chess.com, 2004.

5.Bd4 Nf6 6.e3 0-0 7.Bd3 Nc6 8.Bc3 a6 9.Ne2 Bg4 10.h3 Bh5 11.0-0 Be2 12.Qe2+= Ne5 13.Bc2 Rb8 14.Nd2 Ng6 15.Nf3 b5 16.Rfd1+/- bc4 17.Ne5?? Ne5–/+ 18.Be5 Qc8 19.Bg3 d5 20.a3 c6 21.Bb8+= Qb8 22.Rd4 c5= 23.bc5 Bc5 24.Rh4 Qe5=+ 25.Rd1 Ba3 26.f4 Qb2?? 27.Rb1?? Qc3–/+ 28.e4 Qd4 29.Kh2–/+ g6 30.Rd1=+ Qc5 31.ed5 a5 32.f5+= Qd6 33.g3 c3 34.Rhd4 Bc5+= 35.Ra4 Bb4 36.fg6 hg6 37.Qc4 Nd7 38.Qc6+= Qe7 39.d6 Qe2+= 40.Qg2 Qe3 41.Rd3 Qe5 42.Qd5?? Qe2 43.Qg2=+ Qe5 44.Qd5?? Qe2 45.Qg2= Qe5 ½–½. gtate (2005) – naglaengak (2000), net–chess.com, 2005.

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

4.e3 Nd7 5.Nf3 b6 6.Be2 Ngf6 7.0-0 0-0 8.Nc3 Bb7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.Nc3 Bb7 8.0-0 Nbd7).

4.e3 Be6 (--> 3...Be6 4.e3 Be7).

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

4.e3 Bf5 5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 Be7).

4.e3 Bf5 5.Nf3 Nf6 6.Be2 Nbd7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 Nbd7 6.Be2 Be7).

4.e3 Nf6 5.Nc3 0-0 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Nc3).

4.e3 Nf6 5.Be2 0-0 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2).

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

4.e3 Nf6 5.Nf3 0-0 6.Nc3 Bg4 7.Be2 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0 7.Nc3).

4.e3 Nf6 5.Nf3 0-0 6.Be2 b6 7.Nc3 Bb7 8.0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 8.Nc3).

4.e3 Nf6 5.Nf3 0-0 6.Be2 Bg4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0).

5.e3 a6 6.d4 ed4 7.Nd4+= Bf6 8.Bd3 Nc6 9.Nc6 bc6 10.Nc3 d5 11.cd5 cd5 12.Qa4 Bd7 13.Qc2 Ne7 14.0-0 g6 15.Nb5 ab5 16.Bf6+- Qc8?? 17.Bh8 c6 18.a4 ba4 19.Ra4 Ra4 20.Qa4 c5 21.Qa3 c4 22.Bc2 1–0. pcmvr (2560) – vaidasmp (1885), net–chess.com, 2006.

5.e3 Nc6 6.d4 Nb4 7.de5 de5 8.Be5 Qd1 9.Kd1 0-0-0 10.Nbd2 =+.

5.e3 f5 6.Be2 Bf6 7.d4 e4 8.Nfd2 Ne7 9.Qc2 Nd7 10.0-0 0-0 11.Na3 a6 12.f3 ef3 13.Bf3+= d5 14.cd5 Nd5 15.Bd5 Bd5 16.Rf5 Be6 17.Rf2 Bh4 18.Rf8 Qf8 19.Nf3 Bd8? 20.Bc3 c6 21.Rf1+/- Qd6 22.e4 Nb6 23.e5 Qd5 24.Rf2 Be7 25.Nb1 Rf8 26.a3 Bf5= 27.Qc1 Bg4 28.Nbd2+= Nc4 29.Nc4+/- Qc4 30.h3 Bh5 (30...Bf3!? 31.Rf3 Rf3 32.gf3 Qe2=) ½–½. Perraut,Didier – Alpern,Olivier, corr AJEC/3635, 1995.

5.Nc3 0-0 6.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Nc3).

5.d3 0-0 6.Nbd2 Nc6 7.b5= Na5 8.Bc3 c5 9.e3 a6 10.a4 ab5 11.ab5 b6 12.Be2 Bb7 13.Qc2 Qd7 14.0-0 Qg4 15.Rfd1 Rfb8 16.Ra4 Bd8 17.h3 Qg6+= 18.Rda1 Nh5 19.Ne4+/- Be7 20.Ba5 Ra5 21.Ra5 ba5 22.Ra5 Bd8 23.Ra2 Ra8? 24.Ra8+- Ba8 25.Qa4 Be4 26.de4 Qe4? 27.Nd2 Qb7 28.Bh5 Qb8 29.Qa6 Bc7 30.Bg4 Kh8 31.Qc8 Qc8 32.Bc8 h5 33.Ne4 f6 34.f4 Kh7 35.Kf2 ef4 36.ef4 Kg6 37.f5 Kf7 38.Be6 Ke8 39.Nc3 Ba5 40.Nd5 Kd8 41.b6 h4 42.Kf3 Bb6 43.Nb6 Kc7 44.Nd5 Kb7 45.Kg4 Kb8 46.Kh4 Ka8 47.Kh5 Kb8 48.Kg6 Kb7 49.Kg7 Ka7 50.Kf6 Ka6 51.Ke7 Ka5 52.Bd7+- Ka6 53.f6 Kb7 54.f7 Ka7 55.Bc6 Ka6 56.f8Q Ka7 57.Qa8# 1–0. AnMon517 – Mint v2.3, computer chess game, 2001.

5.h3 0-0 6.e3 Nc6 (6...e4 7.Nd4-/+) 7.b5=+ Nb8 8.Be2 Nbd7 (8...a6 9.0-0=+) 9.0-0 Nc5 10.d4 ed4 11.ed4 Nce4 12.Nbd2 h6 (12...d5 13.Ne4 de4 14.Ne5=) 13.Ne4+= Ne4 14.Bd3 Ng5 15.Ng5 Bg5 16.Qc2 f5 (16...a6 17.a4+=) 17.Rfe1+/- f4 18.f3 (18.Qe2!?+/-) 18...Bh4+= 19.Re2 Bg3 (19...Qg5 20.Be4+=) 20.d5 Bd7?? (20...Bh4 21.Bh7 Kh8 22.Qg6+/-) 21.Qc3?? (better 21.Bh7 Kh8 22.Qg6+-) 21...Qg5= 22.Rc1 (22.Qa3 Rfe8+=) 22...Bh3 23.Qg7 Qg7 24.Bg7 Kg7 25.gh3 Rf7 (25...Rfe8 26.Be4=) 26.Kg2 Raf8 (26...a6 27.ba6 Ra6 28.Rb1+=) 27.Re4 Kf6? (better 27...Rg8!?+=) 28.Re6+- Kg7 29.Rc2 (better 29.Rg6!? Kh8 30.Rh6 Kg8 31.Rc3+-) 29...Rf6+= 30.Rce2 Re6 31.Re6 Rf7 (31...Rf6 32.Re2+=) 32.a4 (32.Rg6 Kf8+/-) 32...h5 33.Be4 (33.Bg6 Rf6 34.Bh5 Re6 35.de6 Kf8+/-) 33...h4+= 34.Kf1 Rf6 35.Re8 Rf8 36.Re6 Rf6 37.Re8 Rf8 38.Re6 (38.Rf8!? Kf8 39.a5+=) 38…Rf6= ½-½. dannysmet (2015) - ahmettoprak21 (2025), Rated Blitz game, lichess.org, 2020.

4.Nc3 Ng6 5.e3 Nd7 6.Nf3 Nf6 7.Be2 Be7 8.0-0 0-0 9.h3 (9.Qc2 c6+=) 9...Be6 10.Qc2 Re8 11.Rfd1 c6 12.a3 Qc7 13.Rac1 Rac8 14.d4 Red8 15.Qb1 h6 16.d5 Bd7 17.Bd3 Nf8 18.Rd2 (18.dc6 bc6 19.Ne4 Ne4 20.Be4 Bf6+=) 18...Qb8+= 19.Rcd1 cd5 20.cd5 Rc7 21.Rc1 Rdc8 22.Rdc2 a6 23.a4 Be8 (23...b5 24.ab5 ab5 25.Qa2+=) 24.Ba3 Bd7 (24...b5 25.ab5 ab5 26.Qb3=) 25.Bf1 (better 25.b5!?+-) 25...Bf5 26.e4 Ne4?? (26...Rc3 27.Rc3 Rc3 28.Rc3 Be4+= (worse 28...Ne4 29.Re3 Ng3 30.Bd3 Bd3 31.Qd3+-)) 27.Ne4+- Be4 (27...Rc2 28.Rc2 b5 29.Rc8 Qc8 30.ab5 ab5 31.Nfd2+-) 28.Rc7 Bb1 (28...Rc7 29.Qe4 Nd7 30.Qd3+-) 29.Rc8 Qa7 30.Rb1 e4 31.Ne5! de5 (31...e3 32.Ng4 ef2 33.Nf2 Bh4+-) 32.b5 Qd4 (32...b6 33.d6 Bg5+-) 33.Be7 Qd5 (33...e3 34.Rf8 Kh7 35.Rf7 Qd5 36.Rf8 ef2 37.Rf2+-) 34.Bf8 Qd7 (34...Qe6 35.Rbc1 Kh7 36.R1c7 ab5 37.ab5+-) 35.Rbc1 Qe6 (35...ab5 36.R1c7 Qe6 37.ab5+-) 36.R1c7 ab5 37.Bb5 Qb3 38.Bd6 (better 38.Bc4 Qc4 39.Rc4 Kh7+-) 38...Kh7 39.Be5 Qd1 (39...Qd5 40.Re8 e3 41.Rd7 ef2 42.Kf1 Qd7 43.Bd7+-) 40.Kh2 Qd5 41.Bg3 (41.Re8 e3 42.Bc4 Qc4 43.Rc4 ef2+-) 41...b6 42.Rd7 Qe6 43.Rcc7 e3 44.Bd3 g6 45.Rf7 Qf7 (45...Kg8 46.Rg7 Kf8 47.Rg6 Qe7 48.Bd6 e2 49.Be7 Ke8 50.Rg7 e1Q 51.Bb5) 46.Rf7 Kg8 (46...Kh8 47.Rb7 ef2 48.Be5 Kg8 49.Bc4 Kf8 50.Bd6 Ke8 51.Bb5 Kd8 52.Rb8) 47.Bg6 (47.Bc4 ef2 48.Rb7 Kf8 49.Bd6 Ke8 50.Bb5 Kd8 51.Rb8) 47...ef2 (47...e2 48.f3 h5 49.Rd7 h4 50.Be5 Kf8 51.Bf6 e1Q 52.Rd8 Qe8 53.Re8) 48.Bf2 b5 (48...h5 49.Bd4 h4 50.Re7 Kf8 51.Re8) 49.ab5 (49.Be3 ba4 50.Bh6 a3 51.Rf8) 49...h5 50.b6 h4 51.b7 Kh8 52.b8Q 1–0. Polischuk,Vyacheslav (1790) – Kharitonov,Ivan, Moscow Open E, 2011.

4.e3 b6 5.Nf3 Bb7 6.Be2 g6 7.0-0 Bg7 8.a3 0-0 9.d3 f5 10.Nbd2 e4? (better is 10...a5+=) 11.de4?? (better is 11.Bg7 Kg7 12.de4+-) 11...Bb2-+ 12.Rb1 Bg7 13.ef5 Nf5 14.Qb3 Kh8 15.a4 Nd7 16.a5 Nf6 (16...ba5 17.e4 Nd4 18.Nd4 Bd4 19.ba5-+) 17.c5 Bd5 18.Bc4 Bc4 19.Nc4 b5 20.Ncd2 d5 21.Rfd1 c6 22.Qd3 Qc7 23.Ng5 Ng4 24.g3 Ne5 25.Qe2 Rae8 26.h4 d4 27.e4 d3 28.Qf1 Ne3! 29.Qh3 N5g4 30.fe3 Ne3 31.Re1 Bd4 32.Kh1 Nc2 33.Rf1 Rf1 34.Rf1 Be5 35.Nf7 Kg7 36.Ne5?? Qe5 37.Qg4?? Ne3-+ 38.Qf4 Nf1 39.Nf1 Qf4 40.gf4 Re4 41.Nd2 Rf4 42.Kg2 Rh4 43.Kf3 Rb4 44.Ke3 Rc4! 45.Kd3 Rc5 46.Nb3 Rd5 47.Ke4 g5 48.a6 g4 49.Na5 c5 50.Nc6 g3 51.Kf3 Rd6 52.Na7 b4 53.Nb5 Ra6 54.Kg3 b3 55.Nc3 b2 56.Nb1 Ra1 57.Nd2 c4! 58.Nc4 b1Q 59.Ne3 Qg6 60.Kf3 Rf1! 61.Ke2 Qa6 62.Kd2 Qa2 63.Kd3 Rf3 64.Ke4 Qe2 (64...Qe2 65.Kd4 Qe3 66.Kc4 Qd3 67.Kb4 Rf4 68.Kc5 Rc4 69.Kb6 Qb3 70.Ka5 Ra4) 0–1. Fournier,Frederic (1975) – nepomuseno9 (1750), Active, 2005.

4.e3 Nd7 5.Be2 Ng6 6.Nf3 f5 7.0-0 Be7 8.Nc3 0-0 9.d4 c6 10.a4 Nh4 11.e4 Nf3 12.Bf3 fe4 13.Ne4 Qc7 14.de5 Ne5 15.Be5 de5 16.c5 Be6 17.Bg4 Bd5 18.Bf3 Rad8 19.Qc2 Rf4 20.Rab1 Rdf8 21.Qd3 Qc8 22.Nd2 Qe6 23.Bd5 cd5 24.Rb3 Bd8 25.Nf3 e4 26.Nd4 Qe5 27.Qe3 Bc7 28.Qd2? e3!-+ 29.Nf3?? Rf3 30.Re3 Qh2# 0–1. Trkn – goldenbeauty, itsyourturn.com, 2000.

4.Nf3 Ng6 5.e3 Be7 6.Be2 Nd7 7.Nc3 c6 (7...a5 8.b5+=) 8.a4 (8.0-0 Nf6+=) 8...0-0 9.d4 (9.0-0 Nf6=) 9...a6 (9...Nf6 10.0-0=) 10.b5 (10.0-0 f5+=) 10...c5 (10...Nf6 11.bc6 bc6 12.Qc2=) 11.Nd5 (11.de5 Nde5 12.Ne5 de5+-) 11...a5? (better 11...ed4!? 12.ed4 Nf6 13.Ne7 Qe7+=) 12.de5 (12.0-0 ed4 13.ed4 Nf6+-) 12...de5 13.0-0 (13.Bd3+-) 13...b6 (13...e4 14.Nd2 f5 15.Nb3+-) 14.Qc2 (14.Qd3 Bb7 15.Rfd1 Re8+-) 14...Bb7 (14...Bd6 15.Rad1+-) 15.Rfd1+- Bd5 16.Rd5 Qc7 17.Rad1 (17.Bd3 Nf6 18.Bg6 hg6 19.Be5 Qc8 20.Bf6 gf6+-) 17...Nf6 18.Be5 (18.R5d2!?+-) 18...Ne5+= 19.Re5 Rad8 (19...g6 20.Rg5+=) 20.Bd3 (20.Rd8 Rd8 21.Rf5 g6+=) 20...g6= 21.h4 (21.Rg5 Bd6=) 21...Bd6 (21...Ng4 22.Rd5 Bh4 23.Rd2=+ (23.Nh4? Qh2 24.Kf1 Qh4-+)) 22.Rg5 h6 (22...Rfe8 23.h5 h6 24.Rd5 Nd5 25.cd5 gh5 26.Nd2=) 23.Rd5= Nd5 24.cd5 Kg7 (24...h5 25.Be4=) 25.h5 g5 (25...Qe7 26.g3=) 26.Bf5 (26.Qc3 f6+=) 26...Qe7 (26...Rfe8 27.e4+=) 27.e4 (27.Nd2 Rb8+=) 27...f6 (27...Rfe8 28.Nd2+=) 28.Be6 (28.Nd2 Qc7+-) 28...Be5 (28...Qe8 29.Bg4+-) 29.Nd2 Qe8 30.Bg4 (30.g4 Rd6 31.Bf5 Qb8+-) 30...Qe7 (30...f5!? 31.Bf5 Qh5+=) 31.Nc4+- Rd6 (31...Rfe8!?+-) 32.Ne3 f5 (32...Qc7 33.Nf5 Kh7 34.Nd6 Qd6 35.g3+-) 33.Bf5 (33.Nf5 Rf5 34.Bf5 Rf6+-) 33...Bf4 (33...Bd4 34.Rd4 cd4 35.Qb2+-) 34.Ng4 (better 34.Nc4 Rdf6 35.Qc3+-) 34...Rf5?? (better 34...Be5+-) 35.ef5 Be5 (35...Kf8 36.g3 Qf7 37.f6+-) 36.f6! Rf6 (36...Bf6 37.Qg6 Deflection) 37.Nf6 (37.Re1 Bh2 38.Kf1 Qd8 39.Nf6 Qf6+-) 37...Qf6 38.Qe4 (38.Re1 Bf4+-) 38...Bd6 (38...Bd4 39.Rd2+-) 39.Re1 (39.Re1 Bf8 40.Qe8+-) 1–0. Cano Sevilla,Ivan (1885) – Ani,Virgil, 2rd Barcelona Spain, Club d'Escacs Open, 2017.

5.b5 Nb8 6.Nf3 Nf5 7.g3 Be6 8.d3 a6 9.Bg2 Nd7 10.0-0 Be7 11.Nd2 Bg5?? 12.Bb7+- Rb8 13.Ba6 Ra8? 14.Bb7 Ra7 15.Bc6 0-0 16.Nce4 Nd4? 17.Bd4 (17.Bd4 ed4 18.f4+- (18.Ng5?! Qg5 19.a4 Bg4+-); 17.Ng5?! Qg5 18.Bd4 ed4+-) 1–0. wlittle (2300) – jsivage (2180), net–chess.com, 2004.

5.b5= Nb8 6.Nf3 f6 7.g3 Nd7 8.Bg2 Nc5 9.d4+= ed4 10.Nd4 b6?? 11.Ba8+- Bd7 12.Bg2 Nf5 13.Ne4 Ne4 14.Be4 (14.Be4 Nd4 15.Qd4+-) 1–0. wlittle (2300) – jsivage (2180), net–chess.com, 2004.

5.a3 Bg7 6.Nf3 0-0 7.Nc3 Bg4 8.Be2 Nd7 9.0-0 Nf6 10.d4+= e4 11.Nd2+/- Be2 12.Qe2 d5 13.cd5 Ned5 14.Nce4 Ne4 15.Ne4 Re8 16.Qf3 c6 17.Nc5 b6 18.Nd3 f5 19.Rfc1 Rc8 20.b5 Qd7 21.bc6 Rc6 22.Rc6 Qc6 23.Nf4 Rd8 24.a4 Qd6 25.Ba3 Qd7 26.a5 Nf4 27.Qf4 ba5 28.Bc5 a4 29.Rc1 a6 30.h3 Rc8+= 31.Rb1 h6 32.Rb6 Kh7 33.Ra6 Qb5 34.Qd6 Qb1 35.Kh2 Qb2 36.Qg6 Kh8 37.Qf5 Rb8 38.e4 Qb5 39.Ra7 (39.Ra7 Rg8 40.e5+-) 1–0. b4_player – opponent, gamecolony.com, 2007.

5.Nc3 Bg7 6.Nf3 Nd7 7.d4 0-0 8.Be2 c6 9.0-0 f5 10.Qb3 h6 11.de5 Ne5 12.Ne5 de5 13.c5 Kh7 14.Bc4 Ng8 15.Rad1 Qg5 Black plans f4 16.Rd6 Nf6 17.Rfd1 f4 18.ef4 ef4 19.Ne2 Bg4 20.f3 Bh3 21.Nf4 Qf4 22.gh3 Rae8 23.Bc1 Qh4 24.f4 (better 24.Bd2!?+/-) 24...Re1=+ 25.Kg2 Ne4 Attacks the isolani on f4 26.Be3? (26.Qc2!? Nd6 27.Rd6=+) 26...Nd6 (26...Re3!? 27.Qe3 Rf4 28.Bg8 Kg8 29.Rg6-+) 27.cd6 Rd8?? (better 27...Bc3! 28.Qc3 Rd1-+) 28.Bf2+- (28.Bf2 Qf4 29.Re1 (29.Be1?! Qe4 30.Kg1 Bd4 31.Bf2 Bf2 32.Kf2 Qf4 33.Kg2 Rd6 34.Rd6 Qd6+-) 29...Qd6 30.Re6+- (worse 30.Ba7 Qf4+-)) 1-0. Butterbrot (2110) - WRaven (2255), Rated Blitz game, lichess.org, 2016.

5.a3 Be7 6.Nc3 0-0 7.Nf3 c6 8.Be2 Be6 9.0-0 Nd7 10.d4 f6 11.d5 Bf7 12.Bd3 f5 13.Bf5+/- Bf6 14.dc6+- bc6 15.Ne4 Bc4 16.Qd6 Bf1 17.Rf1 Nb6 18.Qe6 Kh8 19.Bg6 hg6 20.Ne5 Be5 21.Qe5 Qe8?? 22.Qg7# 1–0. Fritz 10 – nn, internet, 2007.

5.Nc3 Be7 6.Nd5 0-0 7.d4 e4 8.Ne7 Qe7 9.a3 c6 10.Ne2 d5 11.cd5 cd5 12.Rc1 Be6 13.h4 Re8 14.h5+= Nf8 15.h6 g6 16.Nf4 Nc6 17.b5 Nb8 18.Be2 Nbd7 19.Rc7 Qd6 20.Rb7 Nf6 21.Qc2 Rec8 22.Qb3 N8d7 23.a4 Nb6?? 24.Ba3 Qd8 25.Ne6 fe6 26.Rg7 Kh8 27.Be7 Ng8 28.Bd8 Rd8 29.a5 Nc8 30.Qc3 Nd6 31.Rh7! Kh7 32.Qc7 (32.Qc7 Rd7 33.Qd7 Ne7 34.Qe7 Nf7 35.Qf7 Kh8 36.Qg7#) 1–0. Fritz 10 – NN, 2007.

5.Nf3 Be7 6.d4 ed4 7.ed4 (7.Qd4 Nc6 8.Qg7 Nb4=) 7...0-0 8.Be2 Nf4 9.0-0 Ne2 10.Qe2 Bf6 11.Nbd2 Bg4 12.Qd3 c5 13.a3 Nc6 14.b5 (worse 14.bc5 dc5 15.Rfe1 cd4-/+) 14...Na5 15.Rad1 (15.Bc3 a6+=) 15...d5 16.cd5 (worse 16.dc5 Bb2 17.cd5 Rc8-/+) 16...Qd5 17.Ne4 Be7 (better 17...Rad8!? 18.Nc5 Qc5 19.dc5 Rd3 20.Rd3 Bb2=+) 18.dc5+/- Qd3 19.Rd3 Bf5 (19...Rfd8 20.Rfd1+/-) 20.Re1 Be4 21.Re4 Bc5 22.g3 (22.Bc3!? b6 23.Ba5 ba5 24.Rc3+/-) 22...Rfd8 23.Rc3 b6 24.Kg2 Rd5 25.Rg4 f6 26.Re4 Kf7 27.h4 Rad8 28.Rf4 (28.g4 Nb7 29.Ra4 Ra8=) 28...h6 (28...Bd6 29.Rd4 Rb5 30.Rcd3 Rb2 31.Rd6 Rd6 32.Rd6-/+) 29.Rc2 (29.Re4!?=) 29...Bd6-/+ 30.Re4 (30.Rd4 Rb5 31.Rcd2 Nb7-/+) 30...Rb5 31.Nd4 Rd5 32.a4 Be5 (32...Be5 33.Nf5 Bb2 34.Re7 Kg6-/+) 0-1. jhonores (2175) - mvillegasp (2010), lichess.org, 2020.

5.Nf3 Be7 6.d4 Bf6 7.Nc3 (7.de5 Ne5 8.Ne5 Be5 9.Be5 de5 10.Qd8 Kd8+=) 7...Bg4 8.Be2 0-0 (8...ed4 9.Nd4 Be2 10.Qe2+= (worse 10.Ke2 0-0=+; worse 10.Nce2 c5-/+)) 9.h3 Bf3 10.Bf3 (worse 10.gf3 ed4 11.Nd5 c5=+) 10...c6 11.0-0 Nd7 12.Ne4 Qe7 13.Nf6 (13.d5 c5+=) 13...Nf6= 14.a4 e4 15.Be2 d5 16.b5 Nh5?? (better 16...Rfd8=) 17.Bh5+- Qg5 18.Qg4 Qf6 (18...Qg4 19.Bg4 cb5 20.ab5 dc4 21.Be2+-) 19.Ba3 Rfe8 20.bc6 (20.cd5!? cd5 21.Qd7 Qg5 22.Bg6 Qg6 23.Qd5 Rab8+-) 20...bc6 21.Rac1 Rab8 22.Bg6 (22.cd5 cd5 23.Rc7 Rb3+-) 22...hg6 (22...fg6 23.cd5 cd5 24.Qd7+-) 23.cd5 cd5 24.Bc5 (24.Rc7 Rb3 25.Bc5 a5+-) 24...Rb2 (24...a5 25.Rb1+-) 25.Ba7 Qa6 (25...Ra2 26.Ra1 Rb2 27.a5+-) 26.Qd7 Rb7 (26...Qe6 27.Qe6 Re6+-) 27.Qe8 Kh7 28.Bc5 1-0. jhonores (2250) - eltiratiroflojo (2160), Rated Blitz game, lichess.org, 2020.

4.a3 Nd7 5.e3 Ne7 6.Nf3 h6 7.Be2 g5 8.h3 Bg7 9.d3 Bg6 10.Nbd2 f5 11.Qc2 0-0 12.0-0-0 (12.d4 Qe8+=) 12...Nb6 (12...a5 13.b5+=) 13.h4 g4 14.Nh2 h5 15.f3 a5 16.fg4 (16.b5!?+=) 16...fg4-+ 17.b5 c6 (17...Rf2 18.Bf1-+) 18.Rhf1 (18.bc6!? bc6 19.c5 dc5 20.Ne4–/+) 18...cb5 19.Rf8 Qf8 20.Rf1 Qe8 21.e4 b4 (21...bc4 22.dc4 Na4 23.Bd3-+) 22.Qb3 Qa4 23.Bd1 Qb3 24.Bb3 a4 25.Bd1 b3 26.Nb1? (better is 26.Be2-+) 26...Bh6 (26...Be4!? 27.Bg4 hg4 28.de4 Bh6 29.Kd1 Nc4 30.Bc1 Bc1 31.Kc1-+) 27.Nd2 Nc6 (better is 27...d5 28.Bg4 hg4 29.Ng4 Bd2 30.Kd2 dc4 31.Nf6 Kg7 32.Be5 Nc6–/+) 28.Rf2?? (28.Rf6!? Kg7 29.Rd6-+) 28...Nd7 (better is 28...g3 29.Ng4 gf2 30.Nh6 Kh7-+) 29.Nhf1 Nc5 30.Rf6? Kg7 31.Rd6 Nd3?? 32.Kb1?? Nb2 33.Kb2 Nd4 34.g3 b5 35.c5? Rc8 36.Rd5 Kh7 37.Re5 Bg7 38.Re7 Nc2 39.Kb1?? Rc5 40.Bc2-+ Rc2 41.e5 Rc3 42.Kb2 Re3 43.Ne3+- Kh6 44.Rg7! Kg7 45.Nd5 Kf7 46.Nc7 Bd3 47.Nb1 Ke7 48.Nc3 Kd7 49.N7b5 Kc6?? 50.Nd4 Kc5 51.Nde2 Be2 52.Ne2 Kd5 53.e6! Ke6 54.Nc3 Ke5 55.Na4 Ke4 56.Kb3 Kf3 57.Nc3 Kg3 58.a4 Kh4 59.a5 g3 60.Ne2 g2 61.a6 g1Q (61...g1Q 62.Ng1 Kg3 63.Ne2 Kf2+-). Fournier,Frederic (1975) – aagorram (2025), Active (5/0), 2004.

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

4.a4 Be7 5.b5 Nf6 6.e3 0-0 7.Nf3 Nbd7 8.Be2 Nc5 (8...a6 9.0-0=+) 9.d4= ed4 10.Nd4 Bg6 11.0-0 Nfe4 12.Bf3 Bg5 13.Nc3? (13.Ra2=) 13...Rb8?? (13...Nf2!? 14.Rf2 Be3=+) 14.a5 (14.Ne4 Ne4 15.a5 Bf6+=) 14...Qf6?? (better 14...Nf2 15.Rf2 Be3-/+) 15.Nd5+/- Qd8 16.a6 ba6? (better 16...Qd7 17.ab7 Rb7+/-) 17.Nc6+- Qe8 18.Nc7 Qd7 19.Nb8 Rb8 (19...Qc7 20.Na6 Na6 21.Ra6 Qc4 22.Qe2+-) 20.Na6 Na6 (20...Rb7 21.Qd5 Be7 22.Nc5 Nc5 23.Bd4+-) 21.Ra6 Nc5 (21...Be7 22.Bd4+-) 22.Rd6 Qf5 (22...Qe7 23.Ba3 Ne6 24.Ra6+-) 23.Bg4 (better 23.Rd5 Qc8 24.Rg5 Ne6+-) 23...Qe4 24.Rd5 (24.Qd4 Qd4 25.Bd4 Ne4+-) 24...Qc4 (24...Nd3 25.Bd4 (worse 25.Rg5 Nb2 26.Qd6 Re8+-) 25...Bh4 26.Ba7+-) 25.Rg5 Qb5 (25...Nd3 26.Be2 Qh4 27.Rg4 Nb2 28.Rh4 Nd1 29.Rd1+-) 26.Be5 (26.Bd4 Qa6 27.Rc5 Bd3+-) 26...Re8 (26...Ne4 27.Bb8 Qg5 28.f4+-) 27.Qd5 (better 27.Bd4 Rd8+-) 27...Re5 (27...a6 28.Bg7! Ne6 29.Qb5 ab5 30.Be6 fe6+-) 28.Re5 (28.Re5 h6 29.Qc5+-) 1-0. BeepBeepImAJeep - l4kraa2, lichess.org, 2017.

4.Qb3 Nc6 5.e3 d5 6.a3 Nf6 (6...Be6 7.cd5 Bd5 8.Qa4=) 7.Nc3 (7.cd5!? Qd5 8.Qd5 Nd5 9.d3 Ndb4 10.ab4 Bb4 11.Nc3=) 7...d4=+ 8.Nd5 Be6 (8...Be4 9.b5 Nb8 10.ed4 ed4 11.Bd4 Nd5 12.cd5 Qd5 13.Qe3=) 9.Nf6 (9.b5 Bd5 (worse 9...Nd5 10.bc6 Nb6 11.cb7+/-) 10.cd5 Ne7=) 9...Qf6=+ 10.e4 (10.Bd3 Be7=) 10...b5 (10...Qg6!? 11.Qd3 f5 12.ef5 Bf5=+) 11.Qc2 bc4 12.Bc4 Bc4 13.Qc4 Qe6 (13...Rb8 14.Ne2=) 14.Rc1+= Qc4 15.Rc4 Kd7 16.d3 (16.f4 f6+=) 16...a5 17.b5 Na7 18.a4 Bb4 (18...Nc8!? 19.Rc1 Nb6=) 19.Ke2+= Nc8 20.Nf3 Nb6? (better 20...f6 21.Rhc1 Ra7=) 21.Ne5+- Ke6 22.Bd4 (22.Rc7 Ke5 23.f4 Kf4 24.Rf1 Kg4 25.Bd4 Na4 26.Rff7 g6 27.Bh8 Rh8+-) 22...Nc4 23.Nc4 f6 24.f4 Rhd8 25.Be3 Bc3 26.Rc1 Bd4 (26...Bb4 27.f5 Kf7 28.Bf4+-) 27.Bd4 (27.Bd2 Rd7+-) 27...Rd4 28.Ke3 Rdd8 29.d4 Kd7 30.Kd3 c5?? (30...Ke7+-) 31.bc6! Kc6 32.d5 Kb7 33.Kd4 Ka6 34.e5 White plans d6 34...Rac8 (34...fe5 35.fe5 Rf8 36.e6+-) 35.Rb1 Rb8 (35...fe5 36.fe5 Rf8 37.g3+-) 36.Rb8 Rb8 37.d6 (37.e6 Kb7+-) 37...fe5 38.fe5 Kb7 39.Kd5 Ra8 (39...Kc8+-) 40.e6 Kc8 1-0. bjoernsen (2325) - NeophyteBR (2145), Rated Blitz game, lichess.org, 2016.

4.Nc3 c5 5.e4 cb4 6.ef5 bc3 7.Bc3 Nc6 8.Nf3 Nh6 9.Rb1+= Qe7 10.Bd3 e4= 11.0-0 ef3 12.Re1 Ne5 13.Be4 Qg5 14.Qa4 Kd8 15.g3 (15.g3 b6 16.Ba8+-) 1–0. Bertel,Michael (1765) – Poulsen,Rene (2080), TE.2004.P.01714, 2004.

4.Nc3 Bg6 5.e3 f6 (5...Nf6 6.Nf3=) 6.d4 Ne7 7.Bd3 Bd3 8.Qd3 Ng6 9.Nge2 Be7 10.a3 0-0 11.0-0 Nd7 12.Rac1 (12.f4 c6+/-) 12...f5+= 13.e4 fe4 14.Ne4 Nf6 15.N4g3 (15.Rcd1 c6+=) 15...Qd7 16.Rfd1 Rad8 17.Qb3 Kh8? (better 17...Qe6=) 18.de5+- Ng8 19.ed6 Bd6? (19...cd6 20.Bd4+-) 20.c5 (better 20.Nh5 Rf7 21.c5 Qf5 22.Bg7 Rg7 23.Ng7 Kg7 24.cd6 cd6+-) 20...Qf7?? (better 20...Bg3 21.Ng3 Qf7 22.Qf7 Rd1 (22...Rf7?? 23.Rd8 h6 24.Rcd1+-) 23.Rd1 Rf7+-) 21.cd6 (21.Qf7!? Rf7 22.cd6 cd6+-) 21...Qf2 (better 21...Qb3 22.Rd2 cd6-+ (worse 22...Rd6 23.Rc7 Nf6 24.Rd6 Qb2 25.Rd1-+)) 22.Kh1+- Nh4 (22...cd6 23.Rc7 Ne5 24.Rb7+-) 23.Rg1 Rd6 (23...Qb6 24.Nh5 Nf6 25.Nf6 gf6 26.dc7+-) 24.Qc3 (better 24.Rcf1 Qf1 25.Rf1 Rf1 26.Nf1 Rd7+-) 24...Rdf6 (24...Nf6 25.Qc7 Rd7 26.Qc4+-) 25.Nh5 (better 25.Qc4 Nf5 26.Bf6 Ng3 27.Ng3 Qf6 28.Rgf1+-) 25...Qe2 26.Nf6 Nf6 27.Rc2 Qe4 28.Qc7 Qg6 (28...Ne8 29.Qc5 Qf5+-) 29.Qg3?? (29.Bf6 Qf6 30.Qb7 Nf5+-) 29...Qe4?? (better 29...Qc2 30.Bf6 Nf5=) 30.Bf6+- gf6 31.Rc7 Ng6 (31...Nf5 32.Qf2+-) 32.Re1 (32.Qd6!? Qf4 33.Qf4 Nf4 34.Rb7 a6+-) 32...Qd5 33.Kg1 (33.Qe3 Rf7 34.Qa7 Ne5+-) 33...Qd4 (33...Rg8 34.Qc3 Ne5 35.Qh3+-) 34.Qf2 (34.Qe3 Qe3 35.Re3 Rb8+-) 34...Qd5 (34...Qf2 35.Kf2 Ne5 36.Re4+-) 35.Rec1 (better 35.Qa7 Rf7 36.Rf7 Qf7 37.Rc1+-) 35...Rd8 (35...a6 36.Rf1+-) 36.Rc8 (36.Qf6 Kg8 37.Qg7) 36...Kg7+- 37.Rd8 (37.Qa7?! Rc8 38.Rc8 Qd1 39.Kf2 Qd2 40.Kf1 Qd1 41.Kf2 Qd2 42.Kf1 Qd1 43.Kf2=) 37...Qd8 38.Qc5 (38.Qa7!? Qe7+-) 38...Ne5 (38...Qd2 39.Rf1+-) 39.Qc7 (39.Qc7 Nf7 40.Qd8 Nd8 41.Rc7 Kf8 42.Rd7+-) 1-0. dannysmet (2020) - Qtri0001 (2005), Rated Blitz game, lichess.org, 2021.

4.Nc3 Nh6 5.e4= Bg6 6.Nf3 a5 7.b5 b6 8.d4+/- ed4 9.Qd4 Nd7 10.Bc1 Be7 11.Nd5 Bf6 12.Nf6 Nf6 13.Bg5 Nhg8 14.e5+/- de5 15.Qe5 Kf8 16.Be2 Qd6 17.Qd6 cd6 18.Rd1 Ne4 19.Bf4 Ke7 20.Rd4 Ngf6 21.Bd3 Rhe8 22.0-0 Rad8 23.Nh4 Kf8 24.Re1 Kg8?? 25.Ng6+- fg6 26.Be4 d5 27.Bc7 Rd7?? 28.Bd5 Kh8 29.Re8 Ne8 30.Bb6 Nf6 31.Bc6 Re7 32.Rd8 Ng8 33.Ba5 h6 34.Bd5 Ra7 35.Rg8 Kh7 36.Bc3 Ra2 37.Rg7 Kh8 38.Ra7# 1–0. Trkn – Sam B.Adam, itsyourturn.com, 2001.

4.d3 a5 5.a3 Nc6 (5...ab4!? 6.e4 Be6=+) 6.b5= Nce7 7.Nd2 Nf6 8.g3 b6 (8...Rc8 9.e4 Be6 10.f4=) 9.Bg2+= Rb8 10.Ngf3 h6 11.0-0 Qd7 12.e4 Bh3 13.d4 Bg2 14.Kg2 ed4 15.Nd4 h5 16.h3 Ng6 Black plans h4 17.Nc6 Rc8 18.Bf6 gf6 19.Nd4 h4 20.Nf5 hg3 21.fg3 Qe6 22.Qe2 Kd7 23.Nf3 (23.Rh1 Ra8+/-) 23...Re8+= 24.Rfe1 Bh6? (better 24...Ne5+=) 25.N3d4+- (25.Nh6 Rh6 26.h4 Qg4=) 25...Qe5 26.Qg4 Re6 (26...Bd2 27.Red1 Reg8 28.Ne7 (28.Rd2 Nf4 29.gf4 Rg4 30.hg4 Qf4=+) 28...f5 29.Ng6 (worse 29.Qf5 Ke7 30.Nc6 Kf8 31.Qc8 Qe8 32.Qe8 Ke8 33.Rd2 Nf4 34.Kf3 Nh3+=) 29...fg6 30.ef5 gf5 31.Qf5 Qf5 32.Nf5+-) 27.Rad1 Rg8? (27...Kc8 28.c5 bc5 29.Ne6 fe6 30.Qg6 Qb2 31.Kh1 ef5 32.Qf5 (32.ef5?! Qa3 33.Qg4 Qb3+/-) 32...Kb7 33.b6 Qa3 34.Rb1 Qg3 35.Rf1= (35.Qf6?? Qh3 36.Kg1 Rg8 37.Qg5 Rg5 38.Kf2 Qg2 39.Ke3 Rg3)) 28.Kh2 (better 28.Nh6 Nf4 29.gf4 (29.Qf4?! Qf4 30.Ng8 Qg5+-) 29...Rg4 30.Ng4 (30.hg4?! Qf4 31.Nhf5 Qg4 32.Ng3 Re4 33.Re4 Qd1=) 30...Qf4 31.Ne6 fe6 32.Re3+-) 28...Nf4?? (better 28...Bf8+-) 29.Qg8 1-0. opperwezen (2800) - smurf42 (2675), lichess.org, 2016.

4.d3 a6 5.a4 Nd7 6.e4= Be6 7.Nf3 Ngf6 8.Be2 c5 9.b5 ab5 10.ab5 Ra1 11.Ba1 g6 12.0-0 Bh6 13.Nc3 0-0 14.Bb2 Qa5 15.Nd2 Qd8 16.Bc1 Ne8 17.Nf3 Bg7 18.Ng5 Qf6 19.Bg4 Bg4 20.Qg4+/- Nb6 21.Nd5 Nd5+= 22.ed5 Qe7 23.Qh3 Nf6 24.Qh4 Re8 25.Nf3 Nh5 26.Qe4 (26.Bg5 Bf6=) ½–½. Hoch,H – Perlitz,Juergen, corr DDR, 1985.

4.d3 d5 5.Be5 dc4 6.dc4 Qd1 7.Kd1 Nc6 8.Bc7 Bb4 9.a3 Bc5 10.Nf3 Nd4 11.Be5= Nb3 12.Bg7+= 0-0-0 13.Nbd2+/- Na1 14.Bh8 f6 15.e3+/- Nb3 16.Ke1 Nd2 17.Nd2 Ba3 18.Ke2 Rf8 19.e4+/- Bg4 20.f3 Be6+= 21.Ke3 Bc5 22.Kf4?? Ne7-+ 23.Bg7 Bf2 24.Bf8 Ng6# 0–1. Istvanny – slagveld (1680), internet, 2007.

4.d3 Be7 5.e4 Be6 6.Be2 Nd7 7.Nf3 h6 (7...f5 8.0-0=) 8.Nbd2 c5 9.b5 (9.bc5!? Nc5 10.d4 ed4 11.Nd4+=) 9...a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 (12.Qa1 Ngf6=) 12...f5 (12...Nf8!?=) 13.ef5 Bf5 14.Ne4 Ngf6 (14...Nf8 15.0-0+=) 15.Nf6 (15.Nh4 Be4 16.de4 Qa5 17.Kf1 Kf7+=) 15...gf6 (15...Nf6!? 16.0-0 0-0=) 16.0-0 Rg8 (16...0-0!?+=) 17.Nh4 Be6 18.Bh5 Kf8 19.Qd2 (19.f4 Nb6+-) 19...Rg5 (19...Kg7 20.Bg6+=) 20.Ng6 ( 20.Qe2+-) 20...Kg7= 21.g4?? ( 21.Ne7 Rh5 22.Qe2+=) 21...Bg4-+ (21...Rg6?! 22.Bg6 Kg6 23.f4–/+) 22.Bg4 Rg4 (22...Kg6?! 23.f3 Kh7 24.Kh1+=) 23.Kh1 Rg6 24.Bb2 f5 (24...d5 25.f4-+) 25.Rg1 (25.Qf4 Rg5-+) 25…Rg1 (26.Kg1 Qe8-+) 0–1. var – forteress, Live Game Caissa's Web, 2004.

4.d4 Nc6 5.b5 Na5 6.e3 c6 7.Bc3 cb5 8.cb5 b6 9.e4 Be4= 10.Ba5 ba5=+ 11.Nc3 Bg6 12.d5 Qc7 13.Rc1 Qb6 14.a4 Rc8 15.g3 Nf6 16.Bg2 Be7–/+ 17.Nge2 Ng4 18.0-0 Bg5 19.Ra1 f5 0–1. bentengutama (2170) – salas (2035), net–chess.com, 2003.

4.d4 ed4 5.Bd4 Nf6 6.Nc3 Be7 7.Nd5 0-0 8.Nf3 Nd5 9.cd5 c6 10.dc6 Nc6=+ 11.e3? Nd4 12.Nd4=+ Bg6 13.Be2 a5 14.b5 a4 15.0-0 Bf6 16.Rc1 Be4 17.Bf3 d5= 18.Bg4 Re8 19.f3 Bg6=+ 20.f4 Be4 21.Nf5 Qb6 22.Qe2 g6 23.Ng3? Kg7?? 24.f5? Bf5?? 25.Bf5+= gf5 26.Nf5 Kh8 27.Kh1 Re5 28.Nh6+/- Qe6? 29.Rc7 Rf8 30.Ng4 Qb6 31.Qc2 Re6 32.Nh6 Re7 33.Re7 Be7 34.Qb2 f6+= 35.Nf5 Bc5 36.a3 Qe6 37.Nd4?? Qe3–/+ 38.Nf5 Qg5 39.Ng3 Bd6 40.Rf5 Qh4 41.Qc2?? Bg3-+ (41...Bg3 42.h3 Qe4 43.Qe4 de4-+) 0–1. gtate (1955) – gdraper (2015), net–chess.com, 2006.

4.d4 Nd7 5.e3= Be7 6.Nf3 e4 7.Nfd2 Bf6 8.Nc3+/- Qe7 9.Qc2 0-0-0 10.Nce4 Nh6+- 11.Bd3 g6 12.0-0 Bg7 13.f3 Nf6 14.g4 Ne4+/- 15.Ne4 Be4 16.Be4 Kb8 17.b5 f5= 18.gf5 gf5 19.Bf5 Qe3 20.Kh1 Nf5 21.Qf5 Rdf8 22.Qg4 Rhg8=+ 23.Qe4 Qe4?? 24.fe4+/- Bh6 25.Rad1 b6 26.a4 Rf1 27.Rf1 Be3 28.h3 Kc8 29.d5 h6 30.e5 de5 31.Be5 Bc5 32.Rf7 Rg1 33.Kh2 Re1 34.Rc7 Kd8 35.Bg3 Re2 36.Kh1 Re3 37.Bf4 Rh3 38.Kg2 Rh4 39.Rf7 Ke8 40.Rf5 Rg4 41.Kf3+- Rg6 42.Rh5 Bf8 43.Ke4 Kd7 44.Bb8 Rg4 45.Kd3 1–0. blackmardiemerdarultakzim (2220) – llinna (2045), net–chess.com, 2006.

4.d4 f6 5.de5 Bb1 (5...fe5!? 6.Nc3 Nf6+=) 6.Rb1 (6.ef6 Nf6 7.Rb1 d5 8.Qa4 Nc6+/-) 6...Nc6 (6...fe5 7.Nf3+=) 7.a3 (7.ef6!? Nf6 8.e3+/-) 7...fe5+= 8.Nf3 g6 (8...Nf6 9.b5 Nb8 10.e3+=) 9.e3 Bg7 10.Be2 Nf6 11.0-0 e4 12.Nd4 Nd4 13.Bd4 Qe7 14.Rc1 0-0 15.Qb3 Kh8 16.c5 d5 17.Bf6 Bf6 18.Qd5 c6 19.Qc4 Qc7 (19...Kg7 20.Rcd1+/-) 20.Rcd1 Be5 21.g3 Bg7 (better is 21...Rae8!?+/-) 22.Qe4+- Rfe8 23.Qc4 Rf8 24.Rd4 Rad8? (24...Bd4 25.Qd4 Pinning) 25.Rd8+- Rd8 26.Rd1 Rf8 27.Qe6 Qb8 (27...Rd8 28.Rd8 Qd8 29.Qd6+-) 28.Qd6 Qe8 29.Qd7 Qe5 30.Qb7 Qf6 31.Rf1 Qb2 32.Bf3 Rf3 33.Qc6 Rf8 34.Qb7 Qa3+= 35.c6 Qc3 36.b5 Kg8 37.c7 Be5 38.Qd5 Kh8+= 39.Qd8 Rd8?? 40.cd8Q+- Kg7 41.Qd7 Kh6 42.Qa7 Bg7 43.b6 Be5 44.b7 Qb3 45.Qa8 Kg5 46.Qc8 Kh6 47.h4 Qb5 48.Rc1 Bd6 49.Qc6 Qb2 50.Qd6 Qb7 51.Qd2 Qe4 52.Rc3 Kg7 53.Rd3 Kh6 54.Rd6 (54.Rd6 Qe8 55.e4 Kg7 56.Rd7 Qd7 57.Qd7 Kh8 58.Qf7 h6 59.e5 g5 60.e6 gh4 61.e7 hg3 62.e8Q) 1–0. Fournier,Frederic (1660) – judoca, Active, 2008.

4.e3 b6 5.Nc3?? c6 (5...Nd7 6.d4=) 6.Nge2 (6.d4 Nf6=) 6...Nf6 7.Ng3 Bg6 (7...Bg4 8.Be2 Be2 9.Nce2=) 8.b5 cb5 (8...Be7 9.f4 Qd7 10.Be2=) 9.Qf3 Nbd7 10.Nb5 Be7?? (better 10...d5 11.cd5 a6+=) 11.Qa8!!+- (11.Qa8 Qa8 12.Nc7 Kd8 13.Na8+-) 1–0. Pierre – Henriksen, internet, 2020.

4.e3 c5 5.a3 Nf6 6.Be2 Nbd7 7.d4 cd4 8.ed4= ed4 9.Nf3+= Be7 10.Nd4 Bg6 11.f4 Bb1 12.Rb1 0-0 13.Nf5 Re8 14.0-0 1–0. pcmvr (2530) – tommyk (1945), net–chess.com, 2006.

4.e3 c6 5.Nf3 Nd7 6.d4 e4 7.Nfd2 d5 8.Qb3 Ngf6 9.a4 Bd6 (9...Be6 10.Nc3=) 10.Nc3= Qe7 11.b5 Be6 12.Be2 0-0 13.0-0 Rab8 14.Rfc1 a6 (14...dc4 15.Qc2 Rbc8 16.Nce4 Ne4 17.Qe4+/- (17.Ne4?! Bf5 18.f3 Nb6=+)) 15.Ba3 Ng4? (15...dc4 16.Bd6 Qd6 (worse 16...cb3 17.Be7 b2 18.Bf8 Kf8 19.bc6 bc6 20.Ba6+/-) 17.Bc4 Ng4+=) 16.Bg4 Bg4 17.cd5 c5? (better 17...cb5 18.Bd6 Qd6 19.Nde4 ba4 20.Qb7 Qh2 21.Kh2 Rb7+-) 18.Nce4 b6 19.ba6 Bf5 (19...Rfc8 20.a7 Ra8 21.a5 ba5 22.dc5+-) 20.Nd6 Qd6 21.e4 Bg4 22.e5 (22.a5!? ba5 23.Qd3 Rfc8+-) 22...Qh6 23.Ne4 (23.Qe3 Qh5+-) 23...Bf5 (23...Qg6 24.Re1+-) 24.Ng3 Qg6 25.Qf3 (25.a5 ba5 26.Qa4 Rfd8 27.Bc5 Nc5 28.Rc5 Bg4 29.Qa5 Ra8+-) 25...Bg4 (25...Bd3 26.a5 ba5 27.Bc5 (27.dc5?! Ne5 28.Qf4 Rfe8+-) 27...Nc5 28.dc5 (28.Rc5?! Qa6 29.Qd1 a4+-) 28...Qa6 29.c6+-) 26.Qf4 Rfe8 27.h3 (worse 27.dc5 bc5 28.f3 Ne5 29.fg4 Nd3+-) 27...Bh5 28.Qh4 (worse 28.dc5 bc5 29.e6 fe6 30.de6 Nf8+-; worse 28.Nh5 Qh5 29.a5 cd4+-) 28...Ne5 (28...cd4 29.Qh5 Qh5 30.Nh5 Ne5 31.Rc7+-) 29.de5 (29.Nh5?? Nf3 30.Kh1 Nh4-+; 29.Qh5 Qh5 30.Nh5 cd4+-) 29...Re5 30.d6! Be2 (30...Qd6 31.Nh5 Deflection) 31.d7 f6 32.Re1 (32.Ne2!? Rd8 33.Rd1 Qc2+-) 32...Ba6 (32...Qd3 33.Bb2 Re7 34.Re2 Re2 35.Ne2 Qd7 36.Qc4 Qf7+-) 33.Re5 1-0. jhonores (2205) - longknights (2210), Rated Blitz game, lichess.org, 2020.

4.e3 e4 5.d3 d5 6.de4 Be4 7.f3 Bf5 8.cd5 Bb4 9.Nd2 Bd2 (9...Qd5? 10.Bg7 Nc6 11.e4 (11.Bh8?! Rd8 12.Kf2 Qd2 13.Be2 Bc5 14.Qd2 Rd2+/-) 11...Be4 12.fe4 (12.Bh8?! 0-0-0 13.fe4 Bd2 14.Kf2 Qc5 15.Kg3 Qd6 16.Kh4 Nh6=) 12...Qe4 13.Qe2 Bd2 14.Kf2 Qe2 15.Ne2+-) 10.Qd2 Nf6 11.e4 Bg6 12.Bb5 Nbd7 13.Ne2 a6 14.Ba4 b5 15.Bb3 0-0 16.0-0 Rc8 17.Rfc1 Re8 18.Nf4 Nh5? (18...Ne5 19.Be5 Re5 20.Ng6 fg6 21.Rc6+-) 19.Ng6 (19.Ne6 Qe7 20.Nc7 Red8 21.Na6 Ne5+-) 19...fg6 20.d6 (better is 20.a4+-) 20...Kf8?? (better is 20...Kh8+/-) 21.Ba3 (21.Qd5 Re6 22.Qe6 cd6 23.Qf7) 21...c6 22.Rc6?? Rc6–/+ 23.Qd5 b4?? 24.Qf7 1–0. Fournier,Frederic (1745) – charlanga, Active (5/0), 2005.

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

4.e3 f6 5.Nc3 Nh6 6.Nf3 Be7 7.Be2 0-0 8.0-0 Bg4 9.d4 e4 10.Ne4+- Bf3 11.Bf3 f5 12.Ng3 f4? 13.Bb7 fg3 14.Ba8 gh2 15.Kh2 Qd7 16.Bf3 Rf3 17.Qf3 Ng4 18.Kg1 Bg5 19.Qd5 (19.Qd5 Qf7 20.Qg5+-) 1–0. marre – oppo, internet, 2010.

4.e3 h6 5.Nc3 Nf6 6.Qf3 Bg6? ( 6...Qc8 7.Nd5 Nd5 8.cd5 c6=) 7.Qb7+- Nbd7 8.Nb5 Rc8 9.Qa7 (< 9.Na7 Rb8 10.Qf3 A) < 10...Rb4 11.Nc6 Be4 12.Nd8 Bf3 13.Bc3+/- (13.Nf3?! Rb2 14.Nc6 Rb6=); B) 10...Be4=) 9...Be7 10.a4 (10.d4 c6 11.Nc3 0-0+/-) 10...0-0 (10...c6 11.Nc3+=) 11.Qa5 c6 (11...Nb6!? 12.d4 Ra8+/-) 12.Qd8+- Rfd8 (12...Bd8? 13.Nd6 Ra8 14.Nf3+-) 13.Nc3 Rb8 (13...d5 14.cd5 Bb4 15.dc6 Rc6 16.a5+/-) 14.b5+- cb5 15.cb5 Nc5 16.a5 d5 ( 16...Ra8+-) 17.Nf3 d4 18.Ne5 dc3 19.dc3 (19.Bc3 Kf8+-) 19...Be4 20.Ra2 (20.f3 Bd6 21.c4 Re8 22.fe4 Be5 23.Be5 Re5+-) 20...Nb3 21.Bc4 (21.f3 Bd6 22.Nf7 Kf7 23.fe4 Ke7+-) 21...Nc1?? (21...Nd2 22.Bf7 Kf8+-) 22.Bc1 (22…Kf8 23.f3+-) 1–0. orane (1995) – USS, Live Game Caissa's Web, 2004.

4.Nf3 Nc6 5.b5 Nd4 6.Nd4+/- ed4 7.Bd4 Nf6 8.g3 Bb1? 9.Rb1+- Be7 10.Bg2 0-0? 11.Bb7 Rb8 12.Bg2 c5 13.bc6 Rc8 14.Rb7 d5 15.Bf6 (15.Bf6 Bf6 16.Bd5+-; 15.cd5 Rc7 16.Qb3 Rb7 17.cb7 Qb8+-) 1–0. Ral – psywar, internet, 2007.

4.Nf3 Nd7 5.Nc3 Ne7 (5...Ngf6 6.e3=+) 6.e3 (6.e4 Bg4=) 6...Ng6 (6...a5 7.b5=) 7.Be2 (7.e4 Be6=) 7...h5 (7...d5 8.Qb3=) 8.d4 (8.0-0 d5 9.Qb3 a5+=) 8...Nh4 (8...e4 9.Nd2 Qh4 10.Qb1+=) 9.Nh4 (9.0-0 a5+/-) 9...Qh4+= 10.Nb5 Qd8 11.Bh5 (11.0-0 c6 12.Nc3 Qf6+=) 11...c6 (11...d5 12.c5 c6 13.Nc3+=) 12.Nc3 e4 (12...d5 13.cd5 ed4 14.ed4 Bb4 15.Bf3 Qe7 16.Qe2+/-) 13.Be2 (13.d5 Ne5 14.Be2 Qg5+=) 13...Qg5 14.g4 Bg6 15.b5 f5 (15...cb5 16.Nb5 Qd8 17.Qa4+/-) 16.bc6 bc6 17.Qa4 Rc8 (17...Rb8 18.Rb1 fg4 19.Qc6+-) 18.gf5 (18.h3 Rc7+/-) 18...Bf5 (18...Qg2 19.Rf1 (19.fg6?! Qh1 20.Kd2 Qg2=) 19...Bf5 20.Qa7 Rh2 21.Qa6+/-) 19.0-0-0 (19.Bf1!?+/-) 19...Qg2+= 20.Rdf1 Rh2 21.Rhg1 Qh3 22.Qa7 Rf2?? (22...Rb8 23.Ne4 Qh4 24.Ng3+/-) 23.Kd2?? ( 23.Rf2 Qe3 24.Kd1 Qf2 25.Rf1+-) 23...Rf1 24.Rf1 g6 25.d5 c5 26.Nb5+= Rb8 27.Qa3 Qh2 28.Qc3 Ne5 29.Kd1= Nd3 30.Qf6 Nb2 31.Qb2 Kf7 32.Qa3+/- Kg8 33.Qa7 Re8 34.Nc7 Re7 35.Qb8 Rf7 36.Re1 Qe5 37.Kc2 Rh7 38.Qd8 Qg3 39.Kd2= Rh3 40.Bd1 Rh2 41.Be2 Qe5 42.Qb8 Bg4 43.Qb3 Be7-+ 44.Qb8?? Kh7 45.Qb7 Kh6 46.Ne6 Bh4 (47.Qg7 Qg7 48.Ng7 Be1 49.Ke1 Re2 50.Kf1 Kg7-+; 46...Be6?! 47.de6 Bh4 48.Qb3 Be1 49.Ke1 Qe6 50.Qc3-+) 0–1. Zahn,Richard – Linn,Burkhard, GER Police–ch 1st, 1997.

4.Nf3 Qf6 5.c5 a6 6.e3 Nc6 7.a3 Bg4 8.Be2 Bf3 9.Bf3 0-0-0 10.Nc3 Nh6 11.Qa4 Kd7? 12.Bc6 bc6 13.Qa6 Be7 14.e4 Ng4 15.0-0 Qf4+= 16.g3 Qd2 17.Nd1 Rb8 18.Bc1 Qd4 19.Ne3 Qa1 20.Ng4 h5 21.Ne3 h4 22.Nf5 hg3=+ 23.fg3 Rb4–/+ 24.Bg5?? Qa2-+ 25.Rf2 Rb1 26.Kg2 Rh2! 27.Kh2 Qf2 28.Kh3 Qf3 (28...Qf3 29.Qf1 Rf1 30.Be7 Rh1#) 0–1. rangi – jonasolofsson, internet, 2007.

4.Nf3 h6 5.d3 Nc6 6.b5 Na5 7.Bc3 b6 8.g3 Nf6 9.Bg2 g5 10.h4 g4 11.Nfd2 h5? (better is 11...Rb8+/-) 12.Ba5+- d5? (12...ba5 13.Bc6 Bd7 14.Ba8 Qa8+-) 13.Bc3 d4 14.Bb2 (14.Ba8?! Qa8 15.0-0 dc3 16.Nc3 Bd6+-) 14...Rb8 15.0-0 Bh6 16.Na3 Nd7 17.Nc2 Nc5 18.Nb4 Qf6 19.Nc6 Rb7 20.Ba3 (20.Nd4!? ed4 21.e3 Qg6 22.Bd4 0-0 23.Bc5 bc5 24.Bb7 Bd3+-) 20...Bd2 21.Qd2 Qe6 (21...Bc8 22.e3 Ne6 23.Rfe1+-) 22.Bc5 bc5 23.Nd4! ed4 (23...cd4 24.Bc6 Double attack (24.Bb7 Discovered attack); 23...ed4 24.Bc6 Double attack (24.Bb7 Discovered attack)) 24.Bb7 f6 (24...Qh6 25.e3+-) 25.Bc6 Kd8 26.Rfe1 Bg6 (26...Kc8 27.e4 de3 28.Re3+-) 27.Qa5 Qc8 (27...Be8 28.Qa7 Bc6 29.bc6+-) 28.Qa7 Re8 29.Be8 Ke8 30.Qc5 f5 31.b6 (31.Qc6 Kf7 32.b6 Ke7+-) 31...Bf7 32.e3 c6 33.ed4 Be6 34.b7 Qc7 (34...Qd7 35.b8Q Kf7 36.Qcf8 Kg6 37.Qf4 Qg7 38.Qg5 Kh7 39.Qgg7) 35.Re6 Kf7 36.Qf5 Kg7 (36...Kg8 37.Qg6 Qg7 38.b8Q) 37.Qg6 Kf8 (37...Kh8 38.Re8) 38.Re8 1–0. pcmvr – valerypavlovich (2105), net–chess.com, 2014.

5.Nc3 Nf6 6.g3 (6.e3 a5=+ (6...Qd7 7.Nf3 0-0 8.Be2 a5 9.0-0 ab4) 7.d4 ed4 8.Qd4 Nc6 9.Qf4 ab4) 6...0-0 (6...Nc6 7.d3 0-0 8.Bg2 Bd7 9.Nf3 Re8) 7.Bg2 Nc6 (7...c6 8.d4=+ (8.Nf3 Nbd7 9.d4 Qc7) 8...a5 9.b5 cb5) 8.e3 (8.Nf3!?= Be6 9.d3 Qd7) 8...Bd3–/+ 9.Qb3 (9.Rc1 Bc4) 9...e4 10.Nge2 (better 10.Nd5!?–/+) 10...Ne5-+ 11.c5 (better 11.Nf4 Bc4 12.Qd1-+) 11...Nf3 (better 11...dc5 12.bc5 Be2 13.Ke2 Qd3 14.Kd1 Bc5–/+) 12.Bf3=+ ef3 13.Nf4 dc5 14.bc5 Rb8 (14...c6 15.Ncd5 cd5 16.Nd3=+) 15.Ncd5 Nd5 16.Nd5 Be2 (16...Bf5 17.Ne7 Qe7 18.Qd5=) 17.Qc3= f6 18.Nf4 Qd7 19.Ne2 fe2 20.Qc4 Kh8 21.Ke2 Rbd8 (21...Rfd8 22.d4+=) 22.d4+= Qc6 (22...b5 23.Qb4+=) 23.Rhd1 White prepares the advance d5 23...b6 (23...Qg2 24.Bc3+=) 24.d5+- Qc5 25.Qc5 (25.Rac1 Qa5+-) 25...Bc5+= 26.a4 Rfe8 27.a5 (27.Ba3 Ba3 28.Ra3 Rd7+=) 27...b5 (27...Rd6 28.Ba3 Ba3 29.Ra3+=) 28.a6 (28.Rac1 Bd6+-) 28...b4 (28...Bb6 29.Rac1+=) 29.Rac1 (29.Ra5 Bd6+-) 29...Bb6 30.Rc6 (30.Rc4!?+-) 30...Kg8 31.Rd3 (31.Rc4 Ba5+=) 31...Kf7 (31...Rd6 32.Rd6 cd6 33.Rb3+=) 32.f3 (32.Bd4 Rd7+=) 32...Ke7 (32...Rd6 33.Bd4 Rc6 34.dc6 Bd4 35.Rd4=) 33.e4 (33.Rc4 Rd7+-) 33...Kd7? (33...Rd6 34.Rc4 Ba5 35.Bd4 Ra6 36.Bc5 Kd7 37.Bb4 Bb4 38.Rb4 Ra2 39.Rd2 Rd2 40.Kd2+=) 34.Bd4 (better 34.Rb3!?+-) 34...Bd4+= 35.Rd4 Rb8 36.Rdc4 Rec8 37.Kd2 h6 (37...b3!? 38.Kc1 b2 39.Kb1 Rb3+-) 38.Kc2+- h5 (38...b3 39.Kb2+-) 39.Kb3 f5 (39...Kd8 40.h3+- (40.Rb4?! Rb4 41.Kb4 Rb8 42.Kc3 Rb1+-)) 40.e5 (40.Rb4?! fe4 41.fe4 Rb4 42.Kb4 Re8+-) 40...g5 41.Rb4 (41.f4 gf4 42.e6 Ke7 43.Rf4 Kf6+-) 41...Re8 (41...Rb4 42.Kb4 Re8 43.f4 gf4 44.gf4 Rb8 45.Kc3+-) 42.e6 Kc8 43.d6 Rb4 44.Kb4 Re6 45.Rc7 Kd8 46.Ra7 (better 46.Kc5!? Re2 47.Ra7 Rh2+-) 46...Rd6 47.Ra8 (47.Kb5!? Rd5 48.Kc6 Rd2+-) 47...Kc7 48.a7 Rd4 (48...Kb6 49.Rg8 Ka7 50.Rg5 h4 51.Rf5 Rd2+-) 49.Kc5 Ra4 50.Rf8 Ra5 51.Kc4 Ra4 52.Kc5 ½–½. Wall,Bill – Sargon, Mt View CA, 1987.

5.d4 A) 5...Nd7 6.de5 (6.e3 Ngf6 7.Qf3 Be4 8.Qg3 ed4 9.Bd4 a5) 6...de5 7.Nd2 Ngf6 8.Ngf3 e4 9.Nd4 Bg6; B) 5...ed4 6.Nf3 (6.e3 Nf6 7.Bd4 Nc6 8.Nf3 0-0 9.Bd3 Bg4) 6...Nc6= (6...c5 7.e3 Bf6 8.ed4 Nc6 9.Bc3 Qe7; 6...Nf6 7.Nd4 Bg4 8.h3 Bd7 9.e3 a5; 6...Bg4 7.Nd4 Nf6 8.h3 Bd7 9.e3 a5) 7.e3 Nf6 8.Nd4 Nd4 9.Bd4 0-0.

5.e3 Nf6 A) 6.Nf3 0-0 (6...a5 7.Be2 ab4 8.ab4 Ra1 9.Ba1 0-0) 7.Be2 a5 8.0-0 ab4 9.ab4 Ra1; B) 6.d4 ed4 (6...e4 7.Ne2 a5 8.Ng3 Bg6 9.Be2 0-0; 6...Nbd7 7.Nd2 e4 8.Ne2 c6 9.d5 cd5) 7.Bd4 Nc6 8.Nf3 0-0 9.Bd3 Bg4.

5.a4 Ngf6 6.e3 Be7 7.d4 ed4 8.ed4 (8.Bd4 Nc5=+) 8...0-0 9.Nf3 Ne4 (9...d5 10.c5=+) 10.Be2 Bf6 (10...d5 11.0-0=+) 11.0-0= Re8 12.Bd3 (12.Nc3 Nc3 13.Bc3 Nc5=) 12...Bg6 (12...d5 13.cd5 Nb6 14.Ne5=) 13.Qc2= Ng5 14.Nbd2 (14.Ng5 Bg5 15.Bg6 fg6+=) 14...Nb6 (14...Nf3!? 15.Nf3 Bd3 16.Qd3 d5=) 15.a5 Nd7 16.Rae1 (16.Ng5 Bd3 17.Qd3 Bg5+=) 16...Nf8 (16...Re1 17.Re1 Bd3 18.Qd3+=) 17.Re8+/- Qe8 18.Re1 (18.Ng5 Bg5 19.Nf3 Bf4+=) 18...Qd7 (18...Nf3 19.Nf3 Qd7+=) 19.Ne4 White intends c5 (better 19.Ng5!? Bg5 20.d5+=) 19...Nf3= 20.gf3 Bh4 (20...Qf5 21.Qd2=) 21.Kh1 (21.d5 Re8 22.Re2 Qh3=) 21...Ne6 22.Rg1 (22.Qc3 Nf4=+) 22...Nf4=+ 23.c5? (better 23.d5=+) 23...Nd3-+ 24.Qd3 d5 25.Qe3 (25.Rg6 fg6 26.Ng3-+) 25...de4 26.fe4 Re8 (26...Qb5 27.Bc3-+) 27.f3 Qe6 (27...Qh3 28.Rg6 fg6 29.Qe2-+) 28.Bc3? (28.d5 Qh3 29.Qf4 Bf2-+) 28...Bf6 (28...Qh3 29.Qe2 Bh5 30.Rf1 Re4 31.Qg2 Qg2 32.Kg2-+) 29.Rg2? (better 29.d5 Qd5! 30.Bf6 gf6 31.ed5 Re3 32.Rd1-+) 29...Qc4 30.e5 (30.Kg1 b6 31.cb6 cb6 32.ab6 ab6-+) 30...Bd8 31.f4 b6 (better 31...Qb5 32.h3-+) 32.Rg1 (32.cb6 cb6 33.Qf3 Qb5-+) 32...Qb5 (32...Qd5!? 33.Rg2 Be4 34.Qg3 Bg2 35.Qg2-+) 33.ab6 (33.Qf3 Qd3 (33...ba5?! 34.f5-/+) 34.Qd3 Bd3-+) 33...Qc6 34.Rg2 ab6 35.Kg1 (35.Qg3 Qb5 (35...bc5?! 36.f5-+) 36.h4 Qb3 (36...bc5?! 37.h5-+) 37.cb6 Bh4-+ (37...Qb6?! 38.h5-/+)) 35...Be4 36.Rg3 (36.Re2 Bf3 37.Rb2-+) 36...Bg6 (36...bc5 37.dc5 Be7 38.e6-+) 37.f5?? (37.Rg2 bc5 38.dc5-+) 37...bc5 (better 37...Bf5 38.Qf4 Bg6 39.cb6 Qb6-+) 38.Qg5 (38.Qg5 Bg5 39.d5 Qd5 40.fg6 Qd1 41.Be1 Qe1 42.Kg2 Qe2 43.Kh1 Rd8 44.gf7 Kf8 45.h3 Rd2 46.Rg5 Qh2) 1-0. ClayPigeons (2070) - Kanakan (2065), Rated Bullet game, lichess.org, 2020.

5.e3 Nc5 6.d3 e4 7.d4= Ne6 8.g4 Bg6=+ 9.h4 h6 10.Ne2 Ne7 11.Ng3 c6 12.d5 Nc5 13.Nc3 f5 14.h5 Bh7 15.gf5 Bf5 16.Nf5 Nf5 17.Qg4 Qf6 18.Na4! Qg5 19.Qg5 hg5 20.Nc5 dc5 21.Be5 cd5+= 22.cd5 Be7 23.Bg2 Bf6 24.Bf6 gf6 25.Be4 Nd6 26.Bg6 Ke7 27.a4 f5 28.f3 Kf6 29.Rc1+- b6 30.Kd2 Ke5 31.e4 fe4+/- 32.Be4 Ne4 33.fe4 Ke4 34.d6 Rad8 35.Rc4 Ke5–/+ 36.Rg4 Rd6 37.Ke3 Kf5 38.Re4 g4 39.Rh4 Rg8 40.Rf4+= Ke5 41.Re4 Kd5?? 42.h6 Rdg6 43.h7 Rh8 44.Re7 Re6?? 45.Re6+/- Ke6 46.Kf4 Kf6 47.Rh6 Kg7 48.Rc6 Rh7 49.a5 ½–½. Huelle,Gunter – Jacob,Christiane, Leipzig VfB op 4th, 1997.

5.e3 Ngf6 6.d4 =+.

5.e3 g6 6.d4= ed4 7.ed4 Bg7 8.Nc3 Ne7?? 9.g4+- 0-0 10.Bg2 Re8 11.gf5 Nf5 12.Nce2 Nb6 13.Rc1 d5+/- 14.c5 Nc4+= 15.Rc4 dc4 16.Bb7 Rb8 17.Bc6 Re7 18.Nf3+/- Qf8 19.0-0 Rd8 20.Qc2 Bf6 21.Qc4 g5 22.Rd1 Qg7 23.Nc3 Bd4?? 24.Nd5 Rd5 25.Qd5 Bf2 26.Kf2 Qb2 27.Rd2 Qb1 28.Qd3 Qd3 29.Rd3 g4 30.Nd4 Nh6 31.Re3 Re3 32.Ke3 Kg7 33.Kf4 Kg6 34.Be4 (34.Be4 Kf6 35.Bh7+-) 1–0. Stefanova,Milena (1980) – Boneva,Zvezdelina (2010), Vratza BUL Semifinal (w), 2005.

5.Nf3 Ngf6 =+.

5.a4 Be7 6.e3 Qd7 7.Nc3 0-0 8.Nf3 c6 9.Be2 d5 (9...a6 10.0-0=) 10.d4 (10.Ne5!? Qe6 11.Nf3+/-) 10...e4= 11.Nd2 Bd6 12.Qb3 Qe6 (12...dc4 13.Nc4 Be6 14.Rd1=) 13.h3 (13.bc6 bc6 14.Qb7 Qd7 15.Qa8 Na6 16.Qf8 Bf8 17.cd5 Qb7+/-) 13...Nbd7 (13...dc4 14.Nc4 Be7 15.bc6 bc6 16.Ba3+=) 14.Ba3 White prepares c5 (better 14.g4 Bg6 15.g5+/-) 14...Nb6?? (better 14...Ba3 15.Ra3 dc4 16.Bc4 Qe7=) 15.Bd6 Qd6 16.c5 Qc7 17.cb6 Qb6 (17...ab6 18.Rc1 Be6 19.bc6 bc6 20.Rc2+-) 18.bc6 Qb3 (18...Qc6 19.0-0+-) 19.Nb3 bc6 20.Na5 Rac8 (20...Bd7 21.Rb1+-) 21.Rc1 Bd7 22.Nb7 (22.Ba6 Rb8 23.Bb7 Rfe8+-) 22...Ne8 (22...Rb8 23.Nc5+-) 23.Nc5 Nd6 (23...Nf6 24.a5+-) 24.Rb1 (better 24.Nd7 Rfd8 25.Nc5+-) 24...Rfd8 25.0-0 f6 (25...Be6 26.Rb2+-) 26.Rb4 Kf7 27.Rfb1 Ke7 28.a5 Rc7 29.a6 Rdc8 30.N3a4 Be6 31.Ne6 Ke6 32.Nc5 Ke7 33.f3 g5 (33...f5 34.f4+-) 34.fe4 Ne4 (34...de4 35.Bc4+-) 35.Ne4 (35.Bg4 Rd8 36.Rb7 Rb7 37.Rb7 Kd6+-) 35...de4 36.Rb7 (better 36.Bg4!? Rd8 37.Rb7 Rb7 38.Rb7 Kd6 39.Ra7 h5 40.Bh5 c5+-) 36...Kd6 (36...f5 37.Rf1 Rb7 38.ab7+-) 37.Bg4 Rd8 (37...Rb7 38.Rb7 Rc7 39.Rc7 Kc7 40.Bf5+-) 38.Rc7 Kc7 39.Rb7 Kd6 40.Ra7 Rb8 (40...h5 41.Bh5 c5 42.dc5 Kc5 43.Re7+-) 41.Rb7 (41.Rd7) 41...Ra8 (41...Rb7 42.ab7 Kc7 43.Bc8+-) 42.a7 (42.Rd7) 42...c5 (42...Kd5 43.Rh7 Kc4 44.Bd7+-) 43.dc5 (better 43.Rd7 Kc6 44.Bf5 Ra7 45.Ra7 cd4 46.ed4 Kd5+-) 43...Kc5 (43...Kc6 44.Rh7 Kc5+-) 44.Bf5 Kc6 (44...Kd5+-) 45.Be4 Kc5 46.Rc7 Kd6 47.Ba8 Kc7 48.Be4 (better 48.Bd5 f5+-) 48...f5 49.a8Q (better 49.Bd5!? f4+-) 49...fe4 50.Qe4 Kd6 51.Qh7 (51.Qh7 Ke6 52.Qg6 Kd7 53.Kf2+-) 1-0. BeepBeepImAJeep (2610) - DiscoKnights (1875), lichess.org, 2016.

5.e3 Nbd7 6.Nf3 Be7 7.Nc3 0-0 8.d4 e4 (8...a6 9.a4=+) 9.Nd2 Bg6 (9...c6 10.bc6 bc6 11.Rb1=) 10.Be2 c6 11.a4 d5 12.Qb3 Re8 (12...dc4 13.Nc4 cb5 14.ab5=) 13.Ba3 (13.cd5 c5+=) 13...Ba3 14.Ra3 Nf8 (14...c5 15.0-0=) 15.h3 (15.bc6 bc6 16.0-0 Rb8+=) 15...Ne6 16.0-0 h5 (16...dc4 17.Bc4 c5 18.d5=) 17.Rc1 h4 18.a5 a6 19.b6 Ng5 20.cd5 cd5 21.Bf1 (21.Ra2 Rc8+/-) 21...Qd7 (21...Rc8 22.Raa1+=) 22.Ne2 (22.Qa4 Qe6 23.Ne2+/-) 22...Bf5? (22...Rac8 23.Qb4+=) 23.Nf4 (23.Rc7 Qd6 24.Rb7 Rec8+-) 23...g6? (23...Rac8 24.Qd1+=) 24.Rd1 (better 24.Rc7!? Qd6 25.Rb7+-) 24...Rad8 (24...Rac8+=) 25.Rc1 Nh5?? (25...Ra8 26.Rc7 Qd6+-) 26.Rc7+- Qd6 27.Nh5 gh5 28.Qc3 (28.Rb7 Ra8+-) 28...Bh3? (better 28...Bc8 29.Qc1 Qg6+/-) 29.gh3 Nf3 (29...Rb8+-) 30.Nf3 ef3 31.e4 (31.Rb7 Qg6 32.Kh1 Kh8 33.Rf7 Rg8 34.Rh7 Qh7 35.Qc7 Qb1 36.Rb3 Qf1 37.Kh2 Qg2) 31...Re4 (31...Qg6 32.Kh2 de4 33.Qc4+/-) 32.Qf3 Re6 (32...Re7 33.Rac3 Qg6 34.Qg2+-) 33.Kh1 (33.Qf7 Kh8 34.Qg7) 33...Rg6 (33...Rf6 34.Qh5 Rf2 35.Bg2+-) 34.Bd3 (34.Qf7 Kh8 35.Qh7) 34...Qe6 (34...Rg7 35.Rb7 Qb4 36.Qe3+- (36.Ba6?? Qe1 37.Bf1 Qf1 38.Kh2 Qg1)) 35.Bg6 Qg6 36.Kh2 (36.Re3 f6+-) 36...Re8 (36...Qd6 37.Kg1 Qg6 38.Qg2+-) 37.Re3 Qd6 (37...Re4 38.Re4 de4 39.Qf4+-) 38.Kg2 (better 38.Re5 Rf8 39.Qh5+-) 38...Qg6 39.Kf1 (39.Kh1 Rd8+-) 39...Re3 (39...Qb1 40.Ke2 Qb2 41.Kd3 Qb3 42.Rc3 Qb1 43.Ke2 Qb5 44.Kd2 Re3 45.Ke3 Qa5+-) 40.fe3 Qd3 41.Kf2 Qg6 (41...Qd2 42.Kg1 Qe1 43.Kg2 Qg3 44.Qg3 hg3 45.Rb7 Kg7 46.Ra7 Kh7 47.b7 Kg7 48.b8Q Kg6 49.Qg3 Kf5 50.Qf4 Kg6 51.Qf7 Kg5 52.Ra6 h4 53.Qd5) 42.Qg2 (better 42.Qd5 Qf6 43.Ke2+-) 42...Qg2 (42...Qg3 43.Qg3 hg3 44.Kg2 Kf8 45.Rb7 Ke8 46.Ra7 Kd8 47.Ra8 Kd7 48.b7 Kd6 49.b8Q Ke6 50.Ra6 Kd7 51.Qb7 Kd8 52.Ra8) 43.Kg2 Kf8 44.Kf3 (44.Rb7 Ke8 45.Ra7 Kf8 46.Ra8 Ke7 47.b7 Kf6 48.b8Q Kf5 49.Qe5 Kg6 50.Rg8 Kh6 51.Qg7) 44...Ke8+- 45.Rb7 Kf8 46.Rc7 Kg7 47.Rb7 (47.b7 Kh6 48.b8Q Kg7 49.Qe8 Kf6 50.Rf7 Kg5 51.Qe5 Kg6 52.Qf6) 47…Kf6 (47...Kf6 48.Ra7 Kg6 49.b7 Kf6 50.b8Q Kg7 51.Qe8 Kf6 52.Rf7 Kg5 53.Qe5 Kg6 54.Qf6). ClayPigeons (2040) - klamar74 (2100), Rated Bullet game, lichess.org, 2020.

5.e3 Be7 6.Nf3 0-0 7.Be2 Nbd7 8.Nc3 c6 9.a4 cb5 10.ab5 Nc5 11.0-0 Bd3 12.h3 Be2 13.Qe2 b6 14.d4+/- Nce4 15.de5 Nc3 16.Bc3 de5 17.Be5 Bc5 18.Rfd1 Qe7 19.Rd3 Rfd8 20.Rad1 Rd3 21.Rd3 Rd8 22.Nd4?? Qe5-+ 23.Nc6 Qa1 24.Kh2 Rd3 25.Qd3 h6 26.e4?? Bf2 27.Ne7 Kh8 (27...Kh8 28.Qd8 Kh7 29.Qg8 Ng8 30.h4 Qe5 31.Kh1 Bg3 32.Ng8 Qa1#; 27...Kh7 28.e5 g6 29.Qd1 Qd1 30.h4 Qg1 31.Kh3 Qh1#) 0–1. tschulz – Wormatia08, Schach Master, 2004.

5.d3 Be7 6.e4 Bg6 7.a4 Nf6 8.Nf3 0-0 9.Be2 Nfd7 10.0-0 f5 11.ef5 Bf5 12.d4 e4 13.Nd2 Nf6 14.d5 c6 15.f3 ef3 16.Nf3= cd5 17.Nd5+/- Nd5 18.Qd5+- (18.Qd5 Kh8 19.Nd4+-; 18.cd5?! Bf6 19.Nd4 Bd7+=) 1–0. Fredek (2065) – ASHO, Freundschaftspartie, 5m + 0s, 2006.

5.Nf3 g5 6.e4+= Be6 7.d4 c6 8.d5 cd5 9.cd5 Bg4 10.Rc1 Nd7 11.Be2 b5 12.0-0 Rb8 13.h3 Bf3+/- 14.Bf3 f6?? 15.Bh5+- Ke7 16.Qg4 Nh6 17.Qe6# 1–0. mr – danelson (1850), net–chess.com, 2008.

5.b5 Nd4 6.e4 Be6 7.Nf3 Qf6 8.Nd4+= ed4 9.Ne2 Bc4+= 10.Bd4 Qe6 11.Nc3 f5? 12.d3+- fe4 13.dc4 Nf6 14.Be2 Be7 15.0-0 0-0 16.Re1 c5 17.bc6 bc6 18.Qa4 c5 19.Be3 Ng4 20.Bg4 Qg4 21.Qc2 h5 22.Qe4 Bf6 23.Qg4 hg4 24.Bd2 Bd4 25.Re2 Rae8 26.Re8 Re8 27.Re1 Rf8 28.Ne4 Kh8 29.Be3 Be5 30.Rb1 a5 31.a4 Rd8 32.Rb5 Ra8 33.h3 gh3 34.gh3 Ra6 35.Bd2 d5 36.Rc5 Rg6 37.Kf1 Bh2 38.Rd5 Kh7 39.Rh5 Kg8 40.Ra5 Re6 41.Ng5 Re8 42.c5 g6 43.c6 Bc7 44.Rc5 Kg7 45.a5 Ra8 46.f4 Rd8 47.Bc3 Kh6 48.Be5 Be5 49.Re5 Rd6 50.Nf7 Kg7+- 51.Nd6 (51.Nd6 g5 52.c7 Kh6 53.fg5 Kg7 54.a6 Kf8 55.c8Q Kg7 56.Qd7 Kg8 57.Re8#) 1–0. Istvanny (1640) – zouave_tw, internet, 2007.

5.Nd5 Be6 6.a3 (6.Qa4=) 6...Bd5 (better 6...Nf6!?=+) 7.cd5+= Nce7 8.e4 f5 (8...Nf6 9.Qf3+=) 9.d3 (9.d4 Nf6 10.de5 de5 11.Bb5 c6 12.dc6 (worse 12.Be5 Ng4 13.Bb2 cb5–/+) 12...bc6 13.Bc4 fe4 14.Nh3+=) 9...f4? (9...a5!?=) 10.g3 (10.d4 Nf6+-) 10...g5 (10...a5!?+-) 11.Qh5 (11.d4 Bg7+-) 11...Ng6+- 12.Nh3 (12.d4 Nf6 13.Qg5 Ne4 14.Bb5 Kf7 15.Qf5 Nf6+-) 12...Nf6 (12...Be7!?+=) 13.Qg5+- Be7 14.Qf5 Qd7 (14...Rf8 15.Qe6 Rf7 16.Ng5+-) 15.Rc1 (15.Qd7 Kd7 16.gf4 Nf4 17.Nf4 ef4 18.Bh3 Kd8+-) 15...Qf5 (better 15...a5 16.ba5 Qb5+-) 16.ef5 Nf8 (16...a5 17.ba5 Nf8 18.Rc7 fg3 19.hg3+-) 17.Rc7 (17.d4 N8d7+-) 17...b5 (17...fg3 18.hg3 Rb8 19.d4+-) 18.gf4 Kd8 (18...N8d7 19.d4 e4 20.Bb5+-) 19.fe5 Nd5 (19...de5 20.Rc6 N8d7 21.d6+-) 20.ed6 (20.Re7!? Ne7 21.ed6 Nf5+-) 20...Bd6 21.Rc6 (worse 21.Bh8 Kc7 22.Bg2 Re8 23.Kd1 Nd7+-) 21...Be7 (21...Bb4 22.ab4 Nb4+-) 22.Bh8 h5 (22...Kd7 23.Rh6 Re8 24.Kd2+-) 23.Bg2 Nc7 (23...Nb4 24.ab4 Bb4 25.Ke2+-) 24.Rc7! Kc7 25.Ba8 Kb8 26.Bc6 Bd6 27.Bg7 (27.Bb5 Kb7+-) 27...Nh7 28.f6 (28.Bb5 Be7+-) 28...Kc7 29.Bb5 (29.Be4 Nf8 30.Ng5 Nd7 31.Ne6 Kc8+-) 29...Kb6 30.Bc4 a6 31.f4 h4 32.Bg8 (better 32.Ng5 Nf6 33.Bf6 Bf4+-) 32...Nf6 33.Bf6 Kb5 34.Bb3 (34.Rg1 Ka4+-) 34...Kb6 35.0-0 Kb5 36.Bc4 Kb6 37.Bd8 Ka7 38.f5 Be5 39.f6 Bd4 40.Kg2 Bb2 41.f7 Bg7 42.f8Q Bf8 43.Rf8 Kb7 44.Bd5 Kc8 45.Bh4 (45.Bc6 Kb8 46.Bb6) 45...Kd7 46.Nf4 Kd6 47.Bf6 (47.d4 Kc7 48.Ne6 Kb6 49.Rb8 Ka7 50.Rb7 Ka8 51.Nc7) 47...Kc7 (47...a5 48.Rd8 Kc7 49.Ne6 Kb6 50.Rb8 Ka7 51.Rb7 Ka6 52.b5) 48.Be7 (48.Ne6 Kb6 49.Rb8 Ka7 50.Rb7 Ka8 51.Nc7) 48...Kd7 (48...Kb6 49.Bc5 Kb5 50.Rf6 a5 51.Bc6 Ka6 52.b5) 49.Bc5 Kc7 (49...a5 50.Ne6 ab4 51.Rd8) 50.Rf7 (50.Ne6 Kd7 51.Rd8) 50...Kd8 (50...Kc8 51.Be6 Kd8 52.Nd5 Ke8 53.Rf8) 51.Ne6 Ke8 (51...Kc8 52.Rc7 Kb8 53.Ba7) 52.Ng7 (52.Re7) 52...Kd8 53.Bb6 (53.Bb7 a5 54.Bb6) 53...Kc8 54.Be6 (54.Bc6 Kb8 55.Rf8) 54...Kb8 55.Ba7 Ka8 56.Bd5 1–0. jaddwarrior (2160) – CaseyC43, ChessWorld.net, 2012.

5.Nd5 Nf6 6.Qa4=+.

5.e4 Bg6 6.Qa4 Qd7 7.f3 Be7 8.Nge2 Nf6 9.b5 Nd4 10.Nd4+/- ed4 11.Ne2 d3 12.Nf4 0-0 13.Bd3 c6 14.Ng6 fg6 15.0-0 Nh5 16.bc6 bc6 17.c5! d5 18.Qd4 Nf4?? 19.Qg7# 1–0. marekt – jclaes, GameColony.com, 2002.

5.e3 Ngf6 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 Nbd7 6.Nc3).

5.e4 Bg6 6.Nf3 Be7 7.Be2 Ngf6 8.0-0 0-0 9.d4 ed4 10.Nd4 c6 11.Bg4 Ng4 12.Qg4 h5 13.Qe2 c5 14.bc5 Bf6 15.Ndb5 dc5 16.Rfd1 a6 17.Nd6 Qc7? 18.Nd5+- Qd6? 19.Nf6 Qf6 20.Bf6 Nf6 21.f3 Rfe8 22.Rd6 b5 23.Rad1 b4 24.e5 Nh7 25.Qe3 f6 26.Qc5 Re5 27.Rd8 Rd8 28.Rd8 Kf7 29.Rd7 Ke6 30.Qe7 Kf5 31.Rd5 (31.Rd5 Ng5 32.Qd7 Ne6 33.g4 Kf4 34.Re5 Ke5 35.Qd5 Kf4 36.Qe6 Kf3 37.gh5+-) 1–0. wlittle (2280) – nbarletta (1800), net–chess.com, 2002.

5.g3 g6 6.Bg2= Bg7 7.e3 Ne7 8.Nge2 0-0 9.d4 ed4 10.Nd4 Be6 11.0-0 Bc4–/+ 12.Re1 c6 13.Qc2 Ne5 14.Rad1 b5 15.a3 Nd5 16.Nd5 Bd5 17.Nc6 Bc6 18.Bc6 Nf3?? 19.Bf3+- Bb2 20.Qb2 Rc8 21.Rd5 a6 22.Red1 Qe7 23.Rd6 Rfd8 24.Qd4 Rd6 25.Qd6 Qe8 26.Qa6 Rc3 27.Qf6 Rc8 28.Bg4 (28.Bg4 Rc6 29.Qg5+-) 1–0. alaamattar (2115) – lga (2160), net–chess.com, 2009.

5.d3 a5 6.b5 Be7 7.e4 (7.g3 Nbd7 8.Bh3 Bh3 9.Nh3 0-0 10.0-0) 7...Be6 8.Nf3 0-0 9.Be2 Nbd7 10.Qc2.

5.d3 Nc6 6.a3 Be7 7.e3 0-0 8.Nf3 h6 9.Be2 Qc8 10.Nd5 Bd8 11.0-0 Be6 12.Qb3 b5 13.Qc2 bc4 (13...Nd5? 14.cd5 Bd5 15.e4+-) 14.Nf6 gf6 (14...Bf6!? 15.dc4 Rb8+=) 15.dc4+/- f5 16.c5 Bf6 17.Rac1 Ne7 18.Qa4 Qb8 19.Nd2 d5? (19...Nd5 20.Rfd1+/-) 20.c6 (better is 20.f4!?+-) 20...Qb6+= 21.Nb3 Rfd8 22.b5 (better is 22.Nc5!?+/-) 22...a6= 23.Qa5 (worse is 23.ba6 Rdb8 24.Qb4 Qb4 25.ab4 Rb4–/+) 23...d4 24.Qb6 cb6 25.c7 Rdc8 26.ed4 Bb3 27.de5 Bg7 28.ba6 Ra7 29.Bd4 Nd5 30.Rb1 Ba4? 31.Bf3+- Bc6 32.Rfc1 Ba8 33.h3 Ra6 34.Be2?? Ra3-+ 35.Bb6 Be5 36.Bc5 Rc3 37.Rc3 Nc3 38.Rb8 Ne2 39.Kf1 Rb8 40.cb8Q Bb8 41.Ke2 Bg2 42.h4 Be5 43.Be3 Kg7 44.f4 Kg6 45.Kf2?? Kh5?? 46.Kg3?? Bd6 47.Bf2 Bb7 48.Kh3 Bf4 0–1. Kool,G (2160) – Muratoglu,S (2105), 11th European Senior Team, Velden AUT, 2009.

5.d3 Be7 6.e4 Bd7 A) 7.Be2 Nc6 8.a3 a5 9.b5 Nd4 10.Nf3 Ne2 11.Qe2; B) 7.Nf3 B1) 7...Na6 8.a3 0-0 (8...c5 9.b5 Nc7 10.Be2 Ne6 11.0-0) 9.Be2 c5 10.b5 Nc7 11.0-0; B2) 7...0-0 8.b5 Be6 (8...Bg4 9.h3 Bh5 10.Be2 Nbd7 11.0-0) 9.Be2 Nbd7 10.0-0 Nc5 11.Qc2; C) 7.b5 C1) 7...Be6 C11) 8.Be2 0-0 (8...Nbd7 9.Nf3 0-0 10.0-0 Nc5 11.Qc2) 9.Nf3 Nbd7 10.0-0 Nc5 11.Qc2; C12) 8.Nf3 Nbd7 (8...0-0 9.Be2 Nbd7 10.0-0 Nc5 11.Qc2; 8...a6 9.Be2 Nbd7 10.d4 ab5 11.cb5) 9.Be2 Nc5 10.0-0 0-0 11.Qc2; C2) 7...0-0 C21) 8.Be2 Be6 (8...c6 9.Nf3 a6 10.a4 Be6 11.0-0; 8...a6 9.Nf3 ab5 10.cb5 c6 11.a4) 9.Nf3 Nbd7 10.0-0 Nc5 11.Qc2; C22) 8.Nf3 a6 (8...Bg4 9.h3 Bh5 10.Be2 Nbd7 11.0-0; 8...Be6 9.Be2 Nbd7 10.0-0 Nc5 11.Qc2) 9.Be2 ab5 10.cb5 c6 11.a4.

5.d3 Be7 6.e4 Be6 7.Nf3 (7.Be2 Nc6 8.b5 Nd4 9.Nf3 Ne2 10.Qe2 a6 11.0-0 ab5) 7...0-0 8.Be2 Na6 (8...a6 9.d4= ed4; 8...a5 9.b5 Nbd7) 9.Qb3 (9.a3 c5=) 9...c5 (9...Nh5 10.Bc1=) 10.a3 (10.b5 Nc7=) 10...Rb8 (10...cb4 11.ab4 Qb6 12.Ba3=) 11.Ng5 Bd7 12.0-0 b6 13.b5 (13.Bc1 h6 14.Nf3 Nc7=) 13...Nc7 14.a4 (14.g3 h6 15.Nf3 a5=) 14...h6 15.Nf3 Ne6 16.Bc1 (16.g3 Qc7=) 16...Ra8 (16...Nd4 17.Qb2=) 17.h3 Nd4 (17...Qc7 18.Bd2=) 18.Qb2 Qc7 (18...a6 19.Bd1=) 19.Bd1 Ne6 (19...Rfe8 20.Re1=) 20.Re1 Rfe8 (20...a6 21.ba6 Ra6 22.Nb5=) 21.Be3 (21.Bd2 a5=) 21...a6 22.ba6 Ra6 23.Nb5 (23.Bd2 Qc8=) 23...Qb8 24.Nh2 Bc6 (24...Qd8 25.Ng4=) 25.Nf1 Nd4 26.Ng3 Kh7 (26...Qb7 27.Bd2=) 27.Be2 (27.Bd2 Kg8=) 27...Qb7 28.Ra2 (28.Bd4 cd4 29.Nf5 Rd8=) 28...Rd8 (28...Rea8 29.Rea1=) 29.Rea1= g6 30.Bd1 Kg7 (30...Rc8 31.Ne2=) 31.Ne2 Rc8 32.Nec3 Rca8 (32...Bd7 33.Qd2 h5 34.Bh6 Kg8 35.Bg5+=) 33.Qc1 h5 34.Rb1 Qc8 (34...Bd7 35.Bh6 Kg8 36.Bg5=) 35.Rab2 (35.Bg5 Qd8=) 35...Rb8 36.Bh6 Kh7 (36...Kg8 37.Ra2=) 37.Qd2 (37.Ra2 Qd7=) 37...Qd7 (37...Kg8 38.Ra2=) 38.Bg5 (38.Ra2 Kg8=) 38...Ne6 (38...Kg7 39.Rc1=) 39.Be3 Nd4 (39...Bd8 40.Nd5=) 40.f4 (40.Nd5 Bd8=) 40...Kg8 (40...Kg7 41.Nd5 Nd5 42.ed5 Bb5 43.ab5=) 41.Qf2 (41.Nd5 Nd5 42.ed5 Bb5 43.ab5 Ra7=) 41...h4 (41...Rc8 42.Be2= (42.Nd4? ed4 43.Bd4 cd4-+)) 42.fe5 (42.Nd4 cd4 43.Bd4 ed4 44.Qd4 Rb7-+; worse 42.Qh4 Ne4 43.Qg4 Qg4 44.hg4 Nc3 45.Nc3 Kg7=) 42...de5 43.Qh4 (43.Bg5 Qd8 44.Bh4 Ne4 45.Be7 Nf2 46.Bd8 Nd1 47.Nd4 cd4 48.Nd1 Rd8 49.Rb6 Rb6 50.Rb6 Ba4=) 43...Ne4=+ 44.Qe1 (44.Qg4!? Qg4 45.hg4 Nc3 46.Nc3=+) 44...Nc3–/+ 45.Nc3 Rb7 (45...Qd8 46.a5=+) 46.Bf2 (46.Bd2 Qe6=+) 46...f6 47.h4 Rb8 (47...Bd8 48.Be3=+) 48.Qe3=+ Kh7 (48...Qe6 49.Nb5 Qc8 50.Nd4 cd4 51.Qh6=) 49.h5 gh5 50.Nd5 (50.Bh5 Qe6=+) 50...Bd5 (50...Ba4 51.Qe4 Kg7 52.Ba4 (52.Bh5?! Bd8+-) 52...Ra4 53.Rb6 Rb6 54.Nb6+- (54.Rb6?! Ra7+=)) 51.cd5 Qd5 52.Qh3 Kg7 (52...Qe6 53.Qh5 Kg7 54.Bd4=) 53.Bh5 f5 (53...Qe6 54.Qg3 Kf8 55.Be3=) 54.Qg3= Kf8 55.Be3 Bf6 (55...Qe6 56.Bd4 cd4 57.Rf2+-) 56.Qg6 Ke7 57.Bd4 Qd4 (57...cd4 58.Rc2 Rg8 59.Qh7 Rg7 60.Rc7 Kd8 61.Rg7 Bg7 62.Qg7+-) 58.Kf1 (58.Rf2 Rf8 59.Qf5=) 58...Qf4 (better 58...Qh4!?=+) 59.Rf2+= Qg5 60.Qf7 Kd6? (60...Kd8!?+=) 61.d4+- cd4?? (61...Ra4 62.dc5 bc5 63.Rd2 Qd2 64.Qf6 Kd5 65.Bf3 Kc4 66.Qe6 Kd3 67.Qd6 Kc2 68.Bd1 Kc3 69.Qe5 Qd4 70.Qe1 Kc4 71.Be2 Kd5 72.Rb8 Ra1 73.Rd8 Kc6 74.Rd4 Re1 75.Ke1 cd4+-) 62.Rc2+- (62.Rc2 Qg7 63.Qb3+-) 1–0. gioco1b4 (2485) – Arctic (2515), ChessWorld.net, 2012.

5.d3 Be7 6.e4 Bg6 7.Be2 0-0 8.a3 c6 9.Nf3 Re8 10.0-0 Bf8 11.Bc1 Bh5 12.Ne1 Be2 13.Qe2 d5 14.c5 de4 15.Ne4 Be7 16.f3 Qd4 17.Be3 Qa1 0-1. majidjoon (2105) - Malush (2045), Rated Classical game, lichess.org, 2016.

5.d3 Be7 6.e4 Bg6 7.Be2 Nc6 8.Nf3 (8.b5 Nd4 9.Nf3 Ne2 10.Qe2 0-0 11.0-0) 8...Nb4 9.Qb3 (9.0-0 Nc6 10.Qb3 Rb8 11.Nd5) 9...a5 10.0-0 0-0 11.a3.

5.d3 Be7 6.e4 Bg6 7.Nf3 0-0 8.Be2 a5 9.b5 Nbd7 10.0-0 Nc5 11.Nh4.

5.d3 Be7 6.e4 Bg6 7.Nf3 a5 8.b5 Nbd7 (8...0-0 9.Be2 Nbd7 10.0-0 Nc5 11.Nh4) 9.Be2 0-0 10.0-0 Nc5 11.Nh4.

5.d4 ed4 6.Qd4 Nc6 7.Qe3 Qe7 8.Qe7 Be7 9.a3 0-0 10.Nf3 a5 11.b5 Ne5 12.Nd2 Nfd7 13.f4 Ng6 14.e4 Bg4= 15.Nd5 Nb6 16.g3 Nd5 17.cd5 f5 18.h3+/- Bh5 19.Bg2 Rae8 20.0-0 Be2 21.Rfc1 Bd8 22.a4 Bd3 23.Re1 Bf6 24.Bf6 Rf6 25.Ra3 Be4 26.Kf2 Re7 27.Ne4 fe4 28.Be4 Kf8 29.Rc3 1–0. woschkat (2155) – rasmusgp (1800), net–chess.com, 2001.

5.e3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nc3).

5.e4 Ne4 6.Ne4 Be4 7.d3 Bg6 8.b5 Nd7 9.Nf3 Be7 10.Be2 0-0 11.0-0 Nc5 12.d4 ed4 13.Nd4 Bf6 14.Qd2 Re8 15.Rad1 Qe7 16.Rfe1 Bg5 17.Qc3 Na4 18.Qb4 Nb2 19.Qb2 Bf6 20.Qd2 Bd4 21.Qd4 Qg5 22.Bd3 Bd3 23.Qd3 Re5 24.g3 Rae8 25.Rf1 Qg4 26.a4 Qe2 27.h4 Qd3 28.Rd3 Re1 29.Kg2. vidyashankarh (1930) – josemabinpeiton (2105), net–chess.com, 2003.

5.e4 Ne4 6.Qf3 Nc3 7.Bc3 Qc8 8.h3 Be7 9.Bd3 Bd3 10.Qd3 0-0 11.Ne2 Bf6 12.Ng3 g6 (12...a5 13.ba5 Nc6 14.0-0–/+) 13.Ne4 Bg7 14.0-0 Nc6 15.b5 (15.f4 a5 16.ba5 Na5=+) 15...Ne7–/+ 16.f4 (16.Rfe1 f5 17.Ng5 h6–/+) 16...f5 17.Ng3 Qe6 18.Qf3? (better 18.Rfe1!?–/+) 18...Qc4-+ Black launches an attack 19.fe5 de5 (19...Qb5?! 20.Rfb1 Qc5 21.d4–/+) 20.a4 (20.Qb7 Rfb8 21.Qa6 Qb5 22.Qe6 Kf8-+) 20...e4 21.Qe2 Qc5 22.Qf2? (22.Kh2 Bc3 23.Rac1 f4 24.Ne4 f3 25.Qf3 Be5 26.g3 Rf3 27.Nc5 Ra3-+ (worse 27...Bg3 28.Kg2 Rf1 29.Rf1-+)) 22...Qf2 (better 22...e3 23.de3 Qc3 24.Rad1-+) 23.Rf2 Bc3 24.dc3 Rad8 25.Rc2 (25.a5 Rfe8-+) 25...Nd5 26.Kf2 Nf4 27.Nf1 (27.a5 a6 28.Rb1 Nd3 29.Kf1 Rfe8-+) 27...Rd3 (27...Rfe8 28.a5-+) 28.Ne3 Rfd8 29.Raa2 Nd5 (29...R3d7 30.Nc4-+) 30.Nd5 R8d5 31.c4 R5d4 32.Ke2 f4 33.Kf2 (33.c5 a5-+) 33...Kf7 34.c5 Ke6 (34...c6 35.Rcb2-+) 35.Ke2 (35.c6 b6-+) 35...Re3 (35...c6 36.bc6 bc6 37.a5-+) 36.Kf2 Kd5 (36...c6 37.a5 Rb3 38.bc6 bc6 39.Rcb2-+) 37.c6 b6 38.a5 Rb3 39.ab6 ab6 40.Rab2 (40.Ra7 e3 41.Ke2 Rb5 42.Rc7-+) 40...Rb2 41.Rb2 Kc5 42.Ke2 Rb4 (42...h6 43.h4-+) 43.Rd2 Kb5 44.Rd7 Kc6 45.Rh7 Rd4 (45...Rb2!? 46.Kf1-+) 46.Rg7 Rd6 47.h4 (47.Rf7 g5-+) 47...b5 (better 47...Rf6 48.Rg8-+) 48.Rf7 f3 (48...Kd5 49.Rf4 b4 50.Ke3-+) 49.gf3 ef3 50.Kf3 b4 51.Kg4 (51.Ke4 b3 52.Rf3 b2-+) 51...b3 52.Rf3 b2 53.Rb3 (53.Rf1 Kd5 54.Rb1 Rb6-+) 53...Rd2 (53...Rd4 54.Kg5 Rd5 55.Kg6-+) 54.Kg3 (54.Rb8 Kc5 55.Kg5 Kc4-+) 54...Kd5 (54...Rd3 55.Rd3 b1Q 56.Re3-+) 55.Kf4 (55.Rb7 c6 56.Rd7 Kc4 57.Rd2 b1Q-+) 55...c5 56.Kg5 (56.Rb8 Rd4 57.Kf3 Rb4 58.Rd8 Kc4-+) 56...Rg2 (56...c4!? 57.Rb5 Kc6 58.Rb4 Rd5 59.Kf6-+) 57.Kf4 (57.Kf6 c4 58.Rb5 Kc6-+) 57...c4 58.Rb6 (58.Rb5 Kc6 59.Rb2 Rb2-+) 58…c3 (58...c3 59.Kf3 Rg1 60.Rb5 Kc4-+) 0–1. petrobbo (1990) – thamrinov (2220), ChessWorld.net, 2011.

5.Nf3 Nc6 6.b5 Nb4 7.d3+/- d5 8.a3 d4 9.Na2?? Na2–/+ 10.Ra2 Bd6 11.g3 0-0 12.Bg2 Re8 13.0-0 Qd7 14.Nh4=+ Be6 15.Bb7+/- Rab8 16.Bc6+- Qc8 17.Be8 Qe8 18.a4 Bh3 19.Ng2 Qe6 20.f4 Qf5? 21.Rf2?? Qh5? 22.Ba3?? e4 23.Bd6 cd6 24.Nh4 e3 25.Rf3 Bg4 26.Rf1 Bh3 27.Rf3 Bc8?? 28.f5+- Ng4 29.Rf4 Nf2 30.Qf1. gtate – joelo, net–chess.com (year?).

5.Nf3 Nbd7 6.d4 Be7 7.Qb3 0-0 8.de5 Ne5 9.Ne5 de5 10.Rd1 Qc8 11.e3 c6 12.Be2 Qc7 13.0-0 Rad8 14.a3 Rd1 15.Rd1 Rd8 16.Rd8 Qd8 17.e4 Be6 18.Qc2 Qb6 19.Bd3 Qc7 20.h3 Nh5 21.Ne2 c5 22.b5 Bd6 23.Nc3 Qd8 24.Qd1 Nf4 25.Nd5 Qg5 26.Nf4 ef4 27.Qf3 Be5 28.Bc1 Qf6 29.Bd2 a6 30.a4 Bc8 31.Bc2 h6 32.Bb3 ab5 33.cb5 Be6 34.Be6 Qe6 35.Bf4+= Qd6 36.Be5+/- Qe5 37.Qf5 Qc7 38.Kf1 c4 39.b6 Qc6 40.Qd5 Qa4 41.Qd8 Kh7 42.Qd5 Qa1 43.Ke2 Qb2 44.Kf3 Qb3 45.Ke2 Qb6 46.Qc4 Qg6 47.g4 b5 48.Qb4 Qa6 49.f4 Qa2 50.Qd2 Qa4 51.Qd3 g6 52.f5 b4 53.Qc4 Kg7 54.h4 gf5 55.ef5 Qa3 56.Qd4 Kg8 57.f6 Qa5 58.Qf4 Qa2 59.Kd3 Qb3 60.Kd4 Qc3 61.Kd5 Qd3 62.Kc5 b3 63.Qe5 Kh7 64.Kb4 Qf3 65.Qh5 Qb7 66.Ka3 b2 67.g5 b1N 68.Ka2 Nc3 69.Ka3 Kg8 70.Qh6 Nb5 71.Ka4 Qa7 72.Kb5 Qc5 73.Kc5 ½–½. woschkat (1995) – awacs (1905), net–chess.com, 2001.

5.Nf3 e4 6.Qc2 g6 (6...Nc6!? 7.Nd5 Nd5 (worse is 7...ef3 8.Qf5 Nd5 9.cd5 fg2 10.Bg2+/-) 8.cd5 Nb4 (worse is 8...ef3 9.Qf5 fg2 10.Bg2+/-) 9.Qa4 Bd7 10.Qb4 ef3 11.Qe4 Qe7 12.Qf3 c6=) 7.Nd4+= Qd7? (7...Nc6!? 8.Qa4 Bg7+=) 8.g4 (8.Nf5 Qf5 9.g4 Qg4+-) 8...Bg4 (better is 8...Ng4!? 9.Nd5 c6 10.Nf5 cd5 11.Bh8 Qf5+-) 9.Ne4+- Bf5?? (better is 9...Ng8 10.f3 Bh5+-) 10.Nf6 Kd8 11.Qb3 (better is 11.Nd7 Bc2 12.Nc2 Rg8+-) 11...Qc8 12.Nf5 Qf5 (12...gf5 13.Nd5 Bg7 14.Bg7+-) 13.Bh3 Qg5 14.c5 (better is 14.Nd5 Nd7 15.Bh8 f5+-) 14...Ke7 (14...Bh6 15.Ne4 Qf4 16.Bf6 Ke8+-) 15.Nd5 Kd8 16.Bf6 Qf6 17.Nf6 Bg7 18.Qf7 Bf6 (18...Rf8 19.Qg7 Rf6 20.Qf6 Ke8 21.Be6 c6 22.cd6 Nd7 23.Qe7) 19.cd6 cd6 (19...c6 20.Qf6 Ke8 21.Qe7) 20.Rc1 1–0. pcmvr – nando (2115), net–chess.com, 2016.

5.Nf3 Be7 6.e3 0-0 7.Be2 Nbd7 8.d4 ed4 9.Nd4 Bg6 10.0-0 Ne4 11.Nd5 Nb6 12.Ne7 Qe7= 13.Nf3 Rad8 14.Qb3 Bh5= 15.Rfd1 Ng5 16.Rd4 Ne6 17.Rd2+= Nd7 18.Rad1 Nf6 19.Nd4 Nd4 20.Bd4 Be2 21.Re2 Rfe8 22.Qb2 Nh5 23.Red2 Nf4 24.h3 Ne6= 25.Bc3 f6 26.Qa3 a6 27.Qa5 Kh8 28.Qd5 b6 29.a3 Ng5 30.Rd4 Ne4= 31.Be1 Rb8 32.h4 Qe5 33.Qe5+/- fe5?? 34.Re4+- 1–0. Melich,Jindrich (2170) – Ryvova,Anna, Prague Cedok op, 1996.

5.Nf3 Be7 6.g3 0-0 7.Bg2 c6 8.0-0 Ne4 9.d3 Nc3 10.Bc3 Nd7 11.a4 Nf6 12.d4 Ne4 13.Bb2= ed4 14.Nd4 Bg6 15.Nc2 Bf6=+ 16.Bf6 Nf6 17.Ne3= Qc7 18.Qb3 Be4 19.Rfd1 Rad8 20.Rd2 Bg2 21.Kg2 Qc8 22.Rad1 Qc7 23.Nf5 d5 24.cd5 cd5 25.Ne3 1–0. wlittle (2270) – davidfustamante (2000), net–chess.com, 2003.

5.Nf3 Be7 6.g3 Ne4 7.Bg2 Nc3 8.Bc3 Be4 9.d3 Bf3 10.Bf3 c6 11.0-0 0-0 12.Qb3 Nd7 13.d4 ed4 14.Bd4 Bf6 15.Rad1 Bd4 16.Rd4 Qf6 17.Rfd1 Ne5 18.Rd6 Nf3 19.Qf3 Qf3 20.ef3 Rae8 21.Rd7 Rb8 22.Rc7 Rfe8? (better is 22...Rfc8 23.Rc8 Rc8+/-) 23.Rdd7+- Rf8 24.Rb7 Rb7 25.Rb7 Ra8 26.a4 g6 27.b5 cb5 28.cb5 Kg7 29.a5 a6? (29...Kf6+-) 30.b6 Kf6 1–0. Hilton,Stephen – Erdos,Viktor, OP–2009–0-00915, 2009.

5.Nf3 Be7 6.g3 Be6 7.d4 ed4–/+ 8.Nd4 Bc4 9.Bg2 –/+. tonjan (1640) – vissky, internet, 2007.

5.g3 c6 6.Bg2 a6 7.Nf3= Be7 8.0-0 0-0 9.d4 ed4 10.Nd4 Qd7 11.Nf5 Qf5 12.Rc1 Rd8 13.e4 Qe6 14.Ne2 d5 15.Nf4+- Qd7 16.e5 Ne8 17.cd5 Bg5 18.d6 Bf4 19.gf4 Qf5 20.Qf3 Rd7 21.Bh3 Qg6 22.Kh1 Rd8 23.Rg1 Qh6 24.Rg5 (24.Rg5 g6 25.Qe3+-) 1–0. Ivanchuk,Vassily (2760) – Heller,Lutz (1875), Mainz sim, 2007.

5.h3 Nc6 6.a3 (6.b5 Nd4 7.d3 Be7+=) 6...Nd4 (6...e4 7.g4 Bg6 8.Bg2=) 7.Rc1 c6 (7...a5 8.b5 Be7 9.g4+=) 8.e3 Ne6 9.d3 (9.Nf3 h6=) 9...Be7 10.Be2 0-0 11.Nf3 h6 12.0-0 Nh7 (12...Re8 13.Qd2=) 13.Qb3 Nhg5 (13...Nf6 14.Qd1=) 14.Nh2 (better is 14.Nd2 Nh7 15.Nce4+=) 14...Bg6?? (better is 14...h5=) 15.f4?? (better is 15.h4 e4 16.d4 (16.hg5?! ed3 17.Bf3 Ng5+/-) 16...Nh3 17.gh3 Bh4 18.f4 ef3 19.Nf3+-) 15...ef4–/+ 16.ef4 (16.h4 f3! (worse is 16...fe3 17.hg5 Bg5 18.Ne4=) 17.gf3 Nh7–/+) 16...Nd4 (16...Qb6!? 17.Kh1 Nd4 18.Qd1–/+) 17.Qd1 Nge6 18.Bg4 (better is 18.Nf3 Ne2 19.Ne2 Qb6 20.Kh2–/+) 18...Nf4?? (better is 18...f5 19.Bh5 Bh5 20.Qh5 Bh4-+) 19.Rf2?? (better is 19.Rf4 Bg5 20.Rf2+/-) 19…Bf6 ½–½. Radwan,Jan (1660) – Medvecky,Frantisek (1890), I Miedzynarodowy Turniej Szachowy Poland, 2012.

6.e4 Be6 7.Nf3 (7.Be2 a5 8.b5 Nc5 9.Nf3 Be7 10.Qc2) 7...Be7 (7...a5 8.a3 c6 9.Ng5 Bg4 10.Be2) 8.Be2 a5 9.a3 c5 10.b5.

6.e4 Bg6 7.Nge2 c6 8.a3 Be7 9.f4 Ng4 10.g3 Qb6 11.d4 a5 12.Na4 Qa7 13.Qd3 b5 14.cb5= cb5 15.Nac3 Qb7 16.Nd5?? Qd5!!-+ 17.ed5 Bd3 18.de5 de5 19.Nc3 Bf1 20.Rf1 ab4 21.Nb5 Rc8 22.d6 Bf6 23.ab4 0-0 24.Ra7 Nb6 25.h3–/+ ef4 26.Bf6 Nf6 27.Rf4 Rfe8 28.Kf2 Rc2 29.Kf3 Nbd5 30.Rf6 Re3 31.Kg4 Nf6 32.Kh4 Rc4 33.g4 (33.Nd4 Rd4 34.g4 Rd6 35.b5-+) 0–1. Coldewey,Carsten – Kruger,Axel, Schleswig Holstein–ch, 1988.

6.e4 Bg6 7.Nge2 Be7 8.Ng3 0-0 9.Be2 h6 10.0-0= c5 11.a3 b6 12.f4 ef4 13.Rf4 Ne5 14.Nd5 Nd5 15.cd5 Bg5 16.Be5 Bf4?? 17.Bf4+- Qf6 18.Be3 Qe7 19.bc5 bc5 20.Qc2 Rab8 21.Rf1 Rb7 22.d4 Rfb8 23.dc5 Rb2 24.Qc4 Be4 25.Ne4 dc5 26.Bc5 Qd7 27.Rf6! Qb7 28.Rh6! Rb1 29.Kf2 Qb2 30.Bd4 Qa3 31.Nf6! gf6 32.Bf6 R1b4 (32...R1b4 33.Rh8#; 32...Qc5 33.Qc5 Rf1 34.Bf1 Rb2 35.Bb2 f6 36.Ba3 Kf7 37.Qf8#) 1–0. mr (2260) – lga (2060), net–chess.com, 2009.

6.e4 Bg6 7.Nf3 a5 8.a3 Be7 9.Be2 0-0 10.0-0.

6.e4 Bg6 7.Nf3 Be7 8.Be2 a5 9.a3 0-0 10.0-0.

6.Nf3 a5 7.a3 d5 8.cd5 ab4 9.ab4 Bb4 10.e4.

6.Nf3 Be7 7.e4 Be6 8.Be2 0-0 (8...a5 9.a3 0-0 10.0-0 Nb6 11.Qb3; 8...c6 9.0-0 a5 10.a3 h6 11.d4) 9.0-0 a5 10.a3 Nb6 11.Qb3.

6.Nf3 Be7 7.e4 Bg4 8.Be2 0-0 9.h3 Bh5 10.0-0 c6 11.Rb1 h6 12.Nh4 (12.d4 Qb6=) 12...Be2= 13.Qe2 b6 (better is 13...d5!?=) 14.Nf5+= Nh7 (14...a6 15.Qe3+=) 15.b5+/- c5 (15...cb5 16.Nd5 (worse is 16.Ne7 Qe7 17.Nd5 Qd8+=) 16...Bf6 17.cb5+/-) 16.Nd5+- Re8 (16...Bf6 17.Nd6 a6 18.ba6 Ra6 19.a3+-) 17.Nde7 Re7 18.Ne7 Qe7 19.a4 Ndf8 (19...a6 20.f4+-) 20.a5! Ng6 (20...ba5 21.Ra1 Decoy) 21.Bc1 Qh4 (21...Qd8 22.f4+-) 22.Ra1 ba5 23.Ra5 Ng5 24.Bg5 Qg5 25.Rfa1 Nf4 26.Qg4 Qe7 27.b6! Nd3 (27...ab6 28.Ra6 Double attack (28.Ra8 Pinning; 28.Ra8 Deflection; 28.Ra6 Decoy)) 28.Ra7 Ra7 29.ba7 (29.ba7 Kh7 30.Qf5 g6 31.Qc8+-) 1–0. pcmvr – tche (2460), net–chess.com, 2016.

6.Nf3 Be7 7.e4 Bg4 8.h3 Bh5 9.Be2 a5 10.b5 0-0 11.Ba3 h6 12.0-0 c6 13.Nh4 Be2 14.Qe2 Nh7 (14...d5!? 15.Be7 Qe7 16.ed5 cd5+=) 15.Nf5+= c5 (15...Nhf6!?+=) 16.Nd5+- Re8 (16...Bg5 17.Nd6 b6 18.f4 Bf4 19.Nf4 ef4 A) 20.Rf4?! Ne5 21.Nf5 Qd3 (21...Nd3?? 22.Rg4+-) 22.Qd3 Nd3+=; B) 20.Bb2+/-) 17.Nde7 Re7 18.Qg4 g6 (18...Qf8 19.Ne7 Qe7 20.Bc1+-) 19.Nh6 (19.Ne7 Qe7 20.Bc1 Kg7+-) 19...Kh8 20.f4 Qf8 21.Qh4 f6 (21...ef4 22.Qf4 (worse is 22.Rf4 g5 23.Nf7 Rf7 24.Rf7 gh4 25.Rf8 Rf8–/+) 22...Ne5 23.Bb2+=) 22.Rad1 Qg7 23.f5 g5 24.Qh5 Nb6 25.Bc1 Na4 26.Rf3 Nc3 27.Rd2 Na4 28.h4 Rf8 (28...gh4 29.Rc2+-) 29.Rg3 Rd7 30.hg5 fg5 31.Rc2 Nb6 (31...Nf6 32.Qh2 Qh7 33.Bg5 d5 34.cd5 Nd5 35.ed5 c4+-) 32.Bg5 Ng5 (32...Rff7 33.Nf7 Qf7 34.Qf7 Rf7 35.Bd8+-) 33.Nf7 (33.Nf7 Kg8 34.f6 Qf6 35.Rg5 Qg5 36.Ng5+-) 1–0. pcmvr – tche (2460), net–chess.com, 2016.

6.Nf3 Be7 7.g3 0-0 (7...h6 8.Bg2= 0-0 (8...c6 9.Qd2 Be6 10.0-0 0-0 11.Rfe1) 9.0-0 c6 10.a3 Be6 11.Qb3; 7...a5 8.a3 0-0 (8...c6 9.Bg2 0-0 10.0-0 h6 11.Qd2) 9.Bg2 h6 10.0-0 c6 11.Qd2) 8.Bg2 c6 (8...h6 9.0-0= c6 10.Qd2 Be6 11.Rfe1) 9.0-0 d5 (9...h6 10.Qc2= (10.Qd2 Be6 11.a3) 10...a5 11.b5; 9...a5 10.b5 Qc7 11.e4) 10.a3 (10.cd5 cd5 (worse 10...Nd5 11.Nd5 cd5 12.Ne5+-) 11.Nd5= (11.e4 de4 12.de4 Bg4=)) 10...Re8 (10...d4 11.Na4=) 11.h3 (11.cd5 cd5 12.Rc1+=) 11...Bd6 (11...d4!? 12.Ne4 Ne4 13.de4 Be4 14.Ne5 A) 14...Ne5?! 15.Be4 Nc4 16.Bd4= (16.Qd4? Nb2 17.Qb2 Bf6-+); B) 14...Bg2 15.Nd7 Bh3 16.Qd4 Bf8–/+) 12.cd5 (12.e4!? Be6 13.ed5 cd5 14.Ng5+-) 12...Nd5+= 13.Ne4 Bc7 14.Ned2 Be6 15.Nc4 f6 (15...Qf6 16.Qc2+=) 16.e4 (16.Qc2 N5b6+=) 16...Ne7 (16...N5b6 17.Na5 Rb8 18.d4+=) 17.Qc2+- a5 (17...Ng6 18.h4+-) 18.ba5 (18.d4 ab4 19.ab4 b5+-) 18...Bc4 (18...b5 19.ab6 Nb6 20.Nb6 Bb6 21.a4+=) 19.Qc4+- Kh8 20.d4 Ra5 (20...Nc8 21.Rfd1 ed4 22.Rd4+=) 21.Bc3 (21.Rfd1 Qc8+-) 21...Ra6 22.Rfd1 (22.Rad1 ed4 23.Qd4 Ne5+-) 22...Qc8 23.Qf7 (23.Bb2 ed4 24.Bd4 Ng6+=) 23...Ng6 24.de5 (24.Qb3 ed4 25.Nd4 Nge5+-) 24...Re7 (24...Nde5 25.Be5 Re7 26.Qb3 Ne5 27.Ne5 Be5 28.Rac1=) 25.Qa2 (25.Qb3 Nge5 26.Nh4 Re8+-) 25...Nge5 (25...Nde5 26.Bb4 Rd7 27.Qb3+=) 26.Nd4+- Nb6 27.Nf5 (27.Bf1 Ra8 28.Bb4 Rd7+-) 27...Rd7 28.Qb3 (28.Rd7 Qd7 29.Qb3 g6+=) 28...Qg8 29.Qb1 (29.Qb4 Nd3 30.Qb1 Ne5+=) 29...Qa8 (29...Rd1 30.Qd1 Na4 31.Bd4+=) 30.Qb3 (30.f4 Rd1 31.Qd1 Ned7+-) 30...Qg8+= 31.Qb1 Qa8 32.Bb4 (32.f4 Rd1 33.Qd1 Ned7+-) 32...Rd1 (32...g6 33.Ne3+=) 33.Qd1 Nbd7? (better 33...g6 34.Nd6 Nbd7+=) 34.f4+- c5?! (34...Qa7 35.Kh2 b5 36.fe5 Ne5+-) 35.Be1 (35.fe5!? Qe8 36.ef6 Rf6+-) 35...Ra3? (better 35...g6 36.fe5 Ne5+-) 36.Ra3 Qa3 37.fe5 Ne5 38.Qd5 Qc1 (38...Qd3 39.Qb7 Qd7+-) 39.Kf1 (better 39.Qe6 Qe1 40.Kh2 Nf3 41.Bf3 Bg3 42.Ng3+-) 39...Ba5-+ 40.Kg1 Qe1 41.Kh2 (better 41.Bf1 Qd2 42.Qd2 Nf3 43.Kf2 Nd2 44.e5 fe5 45.Bg2-+) 41...Qf2?? (better 41...Qd2 42.Kg1 Qd5 43.ed5 b5-+) 42.Ne7?? (better 42.Kh1 Qc2 43.Qd6 Qb1 44.Kh2=+) 42…Nf3 (42...Nf3 43.Kh1 Qg1) 0–1. Dalleau,Philippe (1865) – Blard,Gregory, Reunion op, 2009.

5.b5 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Qg5 9.Nf3 Qf6 10.Qa4 Ne7?? 11.Qa8+- Bc8 12.Qb8 g6 13.Nbd2 d5 14.Be5 Qb6 15.Bh8 dc4 16.dc4 Qf6 17.Bf6 Kd8 18.Be7 Be7 19.g3 f6 20.Bh3 Bd6 21.Qc8 Ke7 22.Qd7 Kf8+- 23.Qd6 Kg7 24.Qe7 Kh6 25.Qf6 b6 26.Ne4 Kh5 27.Qg5 1–0. touwladder – MC Q, ChessWorld.net, 2004.

5.bc5 dc5 6.Be5 Nc6 7.Bb2 Qb6 (7...Nf6 8.g3+=) 8.Bc3+/- Nf6 9.e4 (9.Bf6 gf6 10.Nd2 0-0-0+/-) 9...Bg4 (9...Be6 10.Bf6 gf6 11.Nd2+=) 10.f3 (10.Be2 Be6+/-) 10...Bh5 (10...Be6 11.f4+=) 11.g4+/- Bg6 12.Nd2 (12.f4 h5 13.f5 Bh7+/-) 12...Nd4 (12...Bd6 13.Rb1 Qc7 14.Qb3+=) 13.Ne2 Bd6 (better 13...Nd7!?+/-) 14.Rb1+- Qa6 15.Nd4 cd4 16.Bd4 Bb4?? (16...Bf4+-) 17.Rb4 b6 (17...0-0 18.Qb3+-) 18.e5 (18.h4!? h6+-) 18...Nd7 19.Qa4 (19.f4 Qb7 20.Rg1 Qc7+-) 19...Qb7 20.Ne4 (20.h4!? h5 21.Rg1 Ke7+-) 20...0-0 21.Bh3 (21.Rb5 Be4 22.fe4 Rfe8+-) 21...Rfd8 22.0-0 Nf8 (22...Be4 23.de4 Nb8 24.Rbb1+-) 23.Nd6 Rd6 (23...Qe7 24.Qa3 Ne6 25.Be3+-) 24.ed6 Bd3 25.Rf2 Rd8 (25...Ne6 26.Be3 Rc8 27.Bg2+-) 26.Qb3 (better 26.c5 Qc8 27.Qa7 bc5 28.Qc5 Qe6+-) 26...Bc4 (26...Qc6 27.Bg7 Ng6 28.Bb2 Rd6 29.Bg2+-) 27.Qc4 (27.Rc4 Rd6 28.Qc3 f6+-) 27...Rd6 28.Qc3 f6 (28...Ne6 29.Rc2 Rd8 30.Be5+-) 29.a4 h6 30.Kg2 Nd7 (30...Ng6 31.Rc2+-) 31.a5! Nb8 (31...ba5 32.Rb7 Pinning (32.Rb7 Deflection)) 32.ab6 a6 (32...Nc6 33.ba7 Nb4 34.Rb2+-) 33.Bc5 (33.Qc4 Kh7 34.Qc7 Rd7 35.Qb7 Rb7+-) 33...Re6 (33...Rd8 34.Rd4 Re8 35.Rfd2+-) 34.Qc4 Qf7 35.g5! Nc6 (35...fg5 36.Be6 Discovered attack; 35...hg5 36.Be6 Discovered attack) 36.Be6 Qe6 (36...hg5 37.Bf7 Kh7 38.Qh4 gh4 39.Rh4) 37.Qe6 Kh7 38.Qc6 (38.Qf5 Kh8 39.g6 Nd8 40.Qc8 Kg8 41.Qd8) 38...fg5 (38...hg5 39.b7 Kh6 40.b8Q Kh7 41.Qce8 Kh6 42.Qg3 Kh7 43.Qh3) 39.b7 a5 (39...h5 40.Rb6 Kg8 41.b8Q Kh7 42.Qg6) 40.Rb6 a4 (40...h5 41.Qg6 Kg8 42.b8Q) 41.b8Q a3 42.Qg6 1-0. rcm06 (2130) - gigi37, gameknot.com, 2022.

5.Nc3 Ngf6 6.e4 Bg4 7.Be2 Be2 8.Nge2 g6 9.0-0 Bh6 10.h3 c6 11.f4 ef4 12.Nf4 Bf4 13.Rf4 Nh5 14.Rf2+= 0-0 15.Ne2 Re8 16.Nd4 Ndf6?? 17.g4+- Ng7?! 18.Nc6! bc6 19.Bf6 Qd7 20.Qd2 Re6 21.Qh6 Ne8 22.g5 d5 23.cd5 cd5 24.e5 Rc6? 25.Rf4 Qc7 26.Raf1 Rc8 27.Qh7! (27.Qh7 Kh7 28.Rh4 Kg8 29.Rh8#) 1–0. Chairboy – Andy HB, ChessWorld.net, 2005.

5.e4 Bg6 6.Nf3 Be7 7.Be2 Ngf6 8.0-0 h6 9.Nc3 c6 10.d4 ed4 11.Qd4+= 0-0 12.Rad1 Nh7 13.c5!+/- Bf6 14.Qd6+- Nb8 15.Qg3 Qe7? 16.e5 Bg5 17.h4 Bc2 18.hg5 Bd1 19.gh6 g6 20.Rd1 Re8 21.Bc4 Nd7 22.Qg6 (22.Qg6 Kh8 23.Qg7#) 1–0. Wall,Bill – Ball,R, internet, 2005.

5.g3 d5 6.a3 dc4 7.dc4 =+.

5.g3 Be7 6.Bg2= c6 7.Nc3 Ngf6 8.Nf3 0-0 9.0-0 Re8 10.b5 Rb8 11.a4 c5 12.Nd2 b6 13.h3 Nf8 14.Bc6 Bd7= 15.Bd7 Qd7 16.Kh2 Ng6 17.Nf3 d5 18.e4 h5?? 19.Qe2 Nh7? 20.Nd5 Ng5 21.Ng5 Bg5 22.Qh5 f6?? 23.Qg6 (23.Qg6 Qf7 24.Qf7 Kf7 25.a5+-) 1–0. clavecinist (2005) – lga (2090), net–chess.com, 2008.

5.e4 Nc6?? 6.Nf3?? (6.ef5 d5 7.a3 dc4+-) 6...a6?? (better 6...Bg4=) 7.ef5+- Be7 (7...Nb4 8.Qb3 c5 9.Bc3+-) 8.b5 ab5 9.cb5 Nb8 10.a4 Nbd7 (10...0-0 11.Nbd2+-) 11.h3 (11.Be2 c5+-) 11...c6 12.d4 ed4 (12...e4 13.bc6 bc6 14.Nfd2+-) 13.Nd4 (13.bc6 bc6 14.Nd4 Qc7+-) 13...c5 14.Nf3 d5 15.Be2 0-0 16.0-0 Bd6 17.Re1 c4 (17...Re8 18.Nbd2+-) 18.Nc3 Bb4 19.Nd5 Be1 20.Nf6 (20.Qe1?! Nd5 21.Bc4 Re8+/-; 20.Ne1?! Nd5 21.Qd5 Nb6+-) 20...Nf6 21.Qd8 (21.Qe1 Re8 22.Ne5 Qc8+-) 21...Bf2 (21...Rfd8 22.Bf6 (22.Re1?! Ra4 23.Rc1 Ne4+-) 22...gf6 23.Ne1+- (23.Re1?! Ra4 24.Rc1 Rc8+-)) 22.Kf2 Rfd8 23.Bc4 (23.Bf6 gf6 24.Bc4 Ra5+-) 23...Ne4 24.Kf1 (better 24.Ke3!? Nd6 25.Bd3 Rdc8+-) 24...Rac8 25.Bb3 Rd2 (25...Ng3 26.Kg1+-) 26.Nd2 (better 26.Be5!? Rd3 27.Ba2+-) 26...Nd2 27.Ke2 Nb3 28.Rc1?? (better 28.Rd1+/-) 28...Nc1-+ (28...Rc1?! 29.Bc1 Nc1 30.Kd2 Nb3 31.Kc3-+) 29.Bc1 Rc1 30.Kd3 Ra1 31.a5 (31.Kd4 Ra4 32.Kc5 Rf4-+) 31...Ra5 32.Kc4 b6 (32...Ra2 33.g4-+) 33.Kb4 (33.g4 Ra3 34.Kd5 Rh3-+) 33...g6 (33...Ra2 34.g4-+) 34.g4 (34.fg6 hg6 35.Kc4 Ra2-+) 34...gf5 35.gf5 Kg7 36.h4 Kf6 37.Kc4 Kf5 38.Kd5 Rb5 39.Kc6 Rb3 40.Kd7 b5 41.Ke7 f6 42.Kf7 Rg3 43.h5 (43.Ke7 b4 44.Kd7 b3 45.Kd6 b2 46.Kc6 b1Q 47.Kc5 Rc3 48.Kd6 Qb6 49.Kd7 Qe6 50.Kd8 Rc8) 43...Rg5 (43...b4 44.Ke7 b3 45.Kd7 b2 46.Kc7 b1Q 47.Kd6 Qb8 48.Kc6 Rc3 49.Kd7 Rc7 50.Kd6 Qd8) 44.h6 Rg6 (44...Rg6 45.Ke7 b4 46.Ke8 Ke6 47.Kd8 Rg2 48.Kc7 Rc2 49.Kb7 b3 50.Kb6 b2 51.Ka5 b1Q 52.Ka4 Ra2) 0-1. bvamrx (1985) - mel0nas (2015), lichess.org, 2021.

5.e4 Be6 6.Nf3 =.

5.e4 Bg4 6.Be2 Be2 7.Ne2 a6 8.Nd2 Nc6 9.b5 ab5 10.cb5 Nb4 11.Qb3 d5 12.a3 de4 13.ab4 Ra1 14.Ba1 ed3 15.Nc1 e4 16.0-0 Bd6 17.Qc4 0-0 18.Bf6 Qf6 19.Ne4 Qf4 20.Nd6 Qd6 21.Nd3 Rd8 22.Nc5 Qd5 23.Qd5 Rd5 24.Rc1 b6 25.Na6 Rb5 26.Nc7 Re5 27.Kf1 h6 28.Rc6 b5 29.Rb6 Rh5 30.h3 (30.h3 Kf8 31.Rb5 Rb5 32.Nb5+-) 1–0. Bradley – Davies, email CTON, 1996.

5.e4 Bg6 6.Nc3 Be7 7.Nge2 0-0 8.g3 Nc6 9.b5 Nb4?? 10.a3+- Nd3 11.Qd3 b6 12.Bg2 Ng4 13.h3 Nf6 14.0-0 Nd7 15.Nd5 Nc5 16.Qe3 Na4 17.Bc1 Nc5 18.a4 f5 19.ef5 Bf5 20.Ne7 Qe7 21.Ba8 Ra8 22.Nd4! Bg6? 23.Nc6 Qd7 24.Bb2 Nd3 25.Bc3 a6 26.Kh2 ab5 27.ab5 Rf8 28.f4 ef4 29.gf4 Nc5 30.Ne7 Kh8 31.f5! Re8 32.f6 gf6 33.Bf6# 1–0. Fredek (2090) – Gambit guineen, Freundschaftspartie, 5m + 0s, 2005.

5.e4 Bg6 6.Nf3 c6 7.Be2 Nbd7 8.0-0 d5 9.Ne5 de4 10.Ng6 fg6 11.de4 Ne4 12.Re1 Bb4 13.Bf3 Be1 14.Qe1 Ndc5 15.Be4 0-0 16.Qc3?? Qd1 (16...Qd1 17.Qe1 Qe1#) 0–1. Trkn – kings knight, itsyourturn.com, 2000.

5.e4 Bg6 6.Nf3 Nc6 =.

5.Nf3 Be7 6.g3 h6 (6...c6 7.Bg2=+) 7.Bg2= Nbd7 8.a3 (8.Nbd2 c6=) 8...c6 9.0-0 g5 (9...Be6 10.Nbd2=) 10.e4 (10.Nc3 Be6=) 10...Be6 11.Nbd2 (11.Nc3=) 11...Nh7 (better 11...g4!? 12.Nh4 Qb6=) 12.d4+- Bg4 (12...g4 13.Ne5 de5 14.d5 cd5 15.cd5+-) 13.h3 Bh5 (13...Bf3 14.Nf3 Qc7 15.Qe2+-) 14.de5 Ne5 15.Qc2 (15.g4 Bg6+-) 15...f6 (15...Bf6 16.Rad1 g4 17.Ne5 Be5 18.h4+-) 16.Nd4+- Qd7 (16...Rg8 17.Nf5+-) 17.Nf5 0-0-0 18.f4 gf4 19.gf4 (19.Ne7?! Qe7 20.gf4 Nd7+=) 1–0. michaelbuss (2835) – husenbe (1710), ChessWorld.net, 2015.

5.g3 c6 6.Bg2 Nbd7 7.e4 Bg4 8.f3 Bh5 9.h4 Be7 10.g4+= 0-0. nay (2190) – losertoo (1860), net–chess.com, 2006.

5.g3 d5 6.Qa4 Qd7 7.b5 dc4 8.e4 =+.

5.g3 e4 6.Bg2 c6 7.Qd2 ed3 8.Qf4 Bg6=+ 9.e3 Be7–/+ 10.Nh3 Qb6 11.a3–/+ Na6 12.0-0 0-0 13.Nd2=+ c5 14.b5 Nc7=+ 15.a4 Ne6 16.Qf3 Rab8 17.Nf4 Nf4=+ 18.ef4 Bf5 19.h3 h5 20.Ra3 g6 21.Re1 Bd8 22.Qe3 Bd7 23.Qd3 a6 24.Ne4 Ne4 25.Be4 d5? 26.Bd5 ab5 27.ab5 Kh7 28.Re5 f5?? 29.Bg8 Kg8 30.Qd7 Bf6 31.Re6 Qd8 32.Qd8 Bd8 33.Rg6 Kh7 34.Rg7 Kh6 35.Ra7 Bf6 36.Bf6 Rf6 37.Rab7 Rb7 38.Rb7 (38.Rb7 Rf8 39.Rc7+-) 1–0. Woelfelschneider,Peter – Jablonsky,Werner, corr, 1986.

5.a3 ab4=+ 6.ab4 Ra1 7.Ba1 Nd7 (7...Nc6 8.b5 Nb4 9.d3=+) 8.d3 Ngf6 9.g3 (9.Nf3 Be7=) 9...c6 10.Bg2 (10.Nf3 Qb6=+) 10...Be7 11.Ne2 Qb6 12.Bc3 0-0 (12...d5 13.cd5 Nd5 14.b5=+) 13.0-0 Ra8 14.e4 Be6 15.Nd2 d5 16.c5 Qa6 (16...Qb5 17.d4 de4 18.Ne4-/+) 17.Qc2 (17.d4 Qd3 18.de5 Ne4 19.Ne4 de4=) 17...Qa4 (17...de4 18.Ne4 Qb5 19.Nf6 Bf6 20.Nc1=+) 18.Qa4 Ra4 19.d4 (19.Ra1 Ra1 20.Ba1 b6 21.cb6 Bb4 22.ed5 Bd5=) 19...ed4 (better 19...de4!? 20.de5 Nd5 21.Ne4 Nc3 22.N2c3 Rb4-/+) 20.Nd4= Ne4 21.Ne4 (21.Ne6?? Nc3 22.Bh3 Nf6-+) 21...de4 22.Ne6 (22.Be4 Bf6 23.Rd1 Bh3=) 22...fe6 23.Be4 (23.Re1=) 23...Nf6 (better 23...Nc5!? 24.bc5 Re4=+) 24.Bc2+= Ra2 (24...Ra6!? 25.Bf6 Bf6+=) 25.Bb3+/- Ra3 26.Be6 Kf8 27.Bf6 (27.Be5 Ra4 28.Ra1 Ra1 29.Ba1 Nd5 30.Bd5 cd5+-) 27...Bf6 28.Rd1 (28.Bc8 Ra7+/-) 28...Ra4+= 29.b5 (29.Rb1 Bd4+=) 29...Ra1 (29...cb5!? 30.Rd7 Re4+=) 30.Ra1+/- Ba1 31.Bc8 (31.bc6 bc6 32.Bd7 Bd4+/-) 31...cb5+= 32.Bb7 Bd4 (32...Ke7 33.Be4+=) 33.c6+/- Bb6 34.Ba6 (34.Kf1 Ke7+/-) 34...b4+= 35.Bc4 (35.Kf1 Ke7 36.Bd3 Kd6+=) 35...Ke7= 36.Kf1 (36.Bd5 Kd6 37.Be4 Ke5 38.Bh7 Kd5=) 36...Kd6=+ 37.Ke2 Kc6 38.f3 Bc7 (38...Bg1 39.h4=+) 39.Kd3 Kc5 40.Bg8 h6 41.Ke4 Kd6 42.Kf5 (42.f4 Bb6=) 42...Ke7 43.Kg6 Kf8 44.Bb3 Be5 45.f4 Bc7 46.h4 Bd6 47.h5 Bc7 48.Kf5 Bd6 49.g4 Bc5 50.g5 Be3 51.gh6 gh6 52.Ke5 Bd2 53.f5 Ke7 (53...Bc3 54.Ke6=) 54.f6+= Kf8 55.Kf5 Bc1 56.Kg6 White prepares the advance f7 56...Bd2 57.f7 Bc1 58.Kf6 Bd2 59.Kg6 Bc1 60.Kf6 Bd2 61.Kg6 ½-½. Tilicheev,V (2500) - Stets,V (2190), Bogdanovich Mem Final, 2021.

5.b5 Nd7 6.Nf3 Nc5 7.d4+= ed4 8.ed4 (better 8.Nd4 Bg6 9.Be2=) 8...Qe7-/+ 9.Kd2?? (better 9.Be2 Nd3 10.Kf1 Nb2 11.Qb3 Nc4 12.Bc4-/+) 9...Ne4-+ 10.Kc1 Nf2 (10...Nf2 11.Qd2 Nh1-+) 0-1. jhonores (2135) - londoncity1985 (2140), Rated Blitz game, lichess.org, 2020.

5.Nc3 c6 6.Nf3 h6 7.d4 e4 8.Nd2 Nf6 9.a3 Be7 10.h3 0-0 11.g4 Bg6 12.Bg2 Nbd7 13.Nce4 Ne4 14.Be4 d5 15.cd5 cd5 16.Bd5 Rc8 17.Qb3 b5 18.Be4 Be4 19.Ne4 Nf6 20.Ng3 Bd6 21.f4 Bb8 22.0-0 Nd5 23.Rae1 Nb6 24.e4 Nc4 25.Re2 Ba7 26.Rd1 Qh4 27.Kg2 h5 28.Nf5 Qf6 29.e5 Qe6 30.d5 Qe8 31.Bd4 Bd4 32.Nd4 hg4 33.hg4 f6 34.Ne6 Qg6 35.Qg3 Rfe8 36.f5 Qh6 37.Rh1 1-0. zembelek (2240) - meowingtons (1905), Rated Classical tournament, lichess.org, 2016.

5.d3 Nf6 6.Nf3 Be7 7.Be2 0-0 8.a3 Nc6 9.Nbd2 Qd7 10.0-0 Bg4 11.Nh4 Be2 12.Qe2 Ng4 13.Nhf3 Qf5 14.h3 Nh6 15.e4 Qg6 16.Kh2 f5 17.Rg1 fe4 18.Ne4 Nf5 19.Raf1 b6 20.g4 Nh4 21.Nh4 Bh4 22.f3 Rf4 23.Bc1 Rf7 24.Be3 Raf8 25.Ng3 Nd4 26.Bd4 ed4 (26...Bg3!? 27.Rg3 ed4+=) 27.Nf5= Bg5 28.Re1 (28.f4 Bf6+=) 28...c5 (28...Be3 29.Ne3 de3 30.Rgf1–/+) 29.Qe6 Qe6 30.Re6 h6 (30...g6 31.Nd6 Rf3–/+) 31.Rge1 Bd2 32.R1e2 Bg5 (better is 32...Bc1+=) 33.Rd6?? (33.Kg3+/-) 33...Rb8?? (better is 33...Rf5!? 34.Rb6 Rf3-+) 34.h4?? (better is 34.Kg3+-) 34...Bf4-+ 35.Kh3? (better is 35.Kg2 Rf5 36.Rd4 cd4 37.gf5-+) 35...Bd6 36.Nd6 Rf3 37.Kg2 Rd3 38.bc5 bc5 (38...Ra3 39.c6 d3 40.c7+-) 0–1. Fournier,Frederic – wagnerjipim (1720), Active, 2008.

5.Nf3 Nc6 6.b5 ab5=+ 7.cb5 Nb4 8.Na3? Nf6 9.Qb3=+ Nbd5 10.Bc4= Be6 11.0-0 Be7 12.Ng5 0-0 13.Ne6 fe6+= 14.d4 Kh8 15.de5+= Ne4 16.Rad1 de5 17.Bd5 ed5 18.Rd5 Qc8 19.Nb1 Bd6 20.Be5+- Be5 21.Re5 Nd6 22.a4 Qg4 23.Nd2 Qe2 24.Nf3 Rf3 25.gf3 Qf3 26.Qd5 Qg4 27.Kh1 Rf8 28.Rg1 Qe2 29.Qg2 g6 30.Rh5 Qh5-+ (30...Qh5 31.f4 Re8 32.Qb2 Kg8 33.Qb3 Kf8-+; 30...gh5?? 31.Qg7#) 0–1. mtr – esilver, internet, 2001.

5.Nf3 Nf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 a6).

5.Qb1 Nf6 6.Ne2 Nc6 7.b5 Na5 8.Qc2 c6 9.Qa4 Nd7 10.d4 a6 11.b6!+- Qb6 12.Bc3 Nc4 13.Qc4 d5 14.Qd3 e4 15.Qc2 a5 16.Rb1 Qc7 17.Bd2 Nb6 18.Ng3 Bd6 19.Nf5 0-0 20.Nd6 Qd6 21.Rb6 (21.Rb6 Qc7 22.Qc5+-) 1–0. MrkT – cvetanov, internet, 2005.

5.Qb1 Nf6 6.Nf3 Be7 7.Be2 0-0 8.0-0 a6 9.e4 Nc6 10.b5 ab5 11.cb5 Na7 12.a4 c6 13.d4 cb5 14.ab5 b6 ( 14...d5!?+/-) 15.de5+- de5 16.Ne5 Qc7 17.Rc1 Qd6 18.Nc6 Nc6 19.Rc6 Ra1 20.Ba1 Qa3? (20...Qf4 21.Bf3+/- (21.Rb6?! Ne4 22.Bd4 Bd6 23.Rd6 Nd6=)) 21.Bb2 Qb3 22.Rb6?? ( 22.Qa1 Qb4 23.Rb6+- (23.Bf6?! Bf6 24.Qf1 Qe4+/-)) 22...Ba3=+ 23.Rf6? ( 23.e5 Nd5 24.Rc6 Qb2 25.Qb2 Bb2 26.Kf1–/+) 23...gf6-+ 24.b6? (24.Qd3 Qb2 25.Qg3 Kh8-+) 24...Qb2 ( 24...Bb2 25.Qd3 Qd3 26.Bd3-+) 25.Qb2 Bb2 26.b7 Rb8 27.Ba6 Kf8 28.f3 Ke7 29.g4 Kd6 30.Kg2 Kc6 (31.Bc4 Kb7 32.Bf7 Be5-+) 0–1. chevin – thingy, Live Game Caissa's Web, 2004.

5.Rb1 Nc6 6.b5 Nce7 7.Be2 Nf6 8.Nh3 Nf5 9.0-0 Be7 10.Qc2 g6 11.f4 e4 12.Bf6+- Bf6 13.Qe4 Be7 14.Qb7 0-0 15.Bf3 Nh4 16.Qa8 Qd7 17.Qa7 Nf3 18.Rf3 Qf5 19.Rbf1 Qd3 20.b6 cb6 21.Qe7 Qc4 22.f5 Qa2 23.fg6 hg6 24.Ng5 b5 25.Nf7 Qd2 26.Nh6 Kh8 27.Rf8 1–0. pcmvr (2110) – sburritt, net–chess.com, 2006.

5.Rb1 Be7 6.d3 c5 (6...Nf6 7.d4 Nbd7 8.Be2=) 7.b5 (7.bc5 Qa5 8.Qd2 Qc5+/-) 7...b6 (7...Qa5 8.Qd2 Qa4 9.Be2+/-) 8.Nf3 f6 9.Be2 Nh6 10.0-0 0-0 11.d4 Qe8? (better is 11...cd4 12.Re1 a6 13.ba6 d5 14.ed4 e4+/-) 12.dc5 (worse is 12.de5 Nf7 13.e6 Nd7+-) 12...bc5?? (12...Nf7 13.c6 a6+-) 13.Qd5 Qf7 14.Qa8 Qh5 15.Qd5 Kh8 16.Rfe1 Ng4 17.h3 Nh6 18.Ne5 Qg5 19.Nf3 Qd5 20.cd5 Nf5 21.a4 a5 22.Bc3 Bd8 23.g4 Ne7 24.Bc4 Nd7 25.Ra1 Nb6 26.Bb3 c4 27.Bc2 Ned5 28.Ba5 Nd7 29.Bd8 Rd8 30.Nd4 h6 31.a5 Nc5 32.b6 Nc3 33.a6 Na6 34.Ra6 Rb8 35.Nc6 Rb6 36.Rb6 Nd5 37.Rb8 1–0. Fournier,Frederic (1605) – billmin(C), Active, 2007.

5.Rb1 Nf6 6.d4 e4 7.Qb3 (7.d5 Nbd7+=) 7...Nc6 (7...Be7 8.Nh3=) 8.a3 (8.d5 Ne5+=) 8...d5 (8...Be7 9.d5 Ne5 10.Qa4 Nfd7 11.Nh3+=) 9.cd5 a5?? (better 9...Qd5 10.Bc4 Qh5+=) 10.dc6+- bc6 11.Bc4 a4 (11...Qd7 12.ba5 Bd6+-) 12.Bf7 Kd7 13.Qe6 1–0. jaddwarrior (1730) – CaseyC43, ChessWorld.net, 2015.

5.a3 a6 6.Nf3 Bb1 7.Rb1+= Nf6 8.d4 ed4 9.Nd4 Nd4 10.Bd4 Be7 11.Bd3 c5 12.Bf6 Bf6 13.0-0 b6 14.Be4+- Rb8 15.Qa4 b5 16.Qa6 bc4 17.Qa4 Ke7 18.bc5 dc5 19.Rb8 Qb8 20.Rb1 Qc7?? 21.Rb7 Qb7 22.Bb7 Rd8 23.g3 c3 24.Qc6 Rd1 25.Kg2 Rd7 26.Qc5 Kd8 27.Bc6 Rd2 28.a4 c2 29.Qa5 (29.Qa5 Ke7 30.Qd2+-) 1–0. pcmvr (2735) – robertochess (2195), net–chess.com, 2007.

5.a3 a6 6.Nf3 Nf6 7.d4 ed4 8.Nd4 Nd4 9.Qd4 Be7 10.Nc3 0-0 11.Nd5 c6 (11...c6 12.Ne7 Qe7+=). pcmvr (2225) – dennism (2210), net–chess.com, 2006.

5.a3 a6 6.Nf3 Nf6 7.Be2 Be7 8.0-0 0-0 9.d3 h6 10.Nbd2 Rb8 11.e4 Be6 12.b5 ab5 13.cb5 Na7 14.d4 ed4 15.Nd4 Bd7 16.a4 c6 17.Re1 cb5 (17...d5!? 18.e5 Ne8+=) 18.ab5+/- Nc8 19.Qb3 Qb6 (19...Nb6 20.Bf3+/-) 20.Qg3 Na7 21.e5 de5 22.Nc4 Qc7?? (better is 22...Qd8 23.Ne5 Ra8+-) 23.b6 (23.b6 Qd8 24.ba7 (24.Ra7?! ed4 25.Bd4 Bb5+/-) 24...ed4 25.ab8R Qb8 26.Qb8 Rb8 27.Bd4+-; 23.Ra7?! Bc5 24.b6 Bb6+-) 1–0. Janek – Ken, internet, 2016.

5.a3 d5 6.cd5 Qd5 7.Nc3 Qd6 (better 7...Qe6!?+=) 8.Nf3+- a6 (8...0-0-0 9.Rc1 f6 10.Qa4+-) 9.b5+- ab5 10.Nb5 Qe7 11.Rc1 Ra5? (better 11...f6!?+-) 12.d4 Rb5 (12...e4 13.Ne5 Ra6+-) 13.Bb5 ed4 14.Nd4 Nf6 (14...Bd7 15.Nc6 bc6 16.Rc6 Qd8+-) 15.Nf5 Qe5 (15...Qe4 16.Bf6 gf6+-) 16.Be5 (16.Be5 h6 17.Rc6 Bb4 18.ab4 bc6 19.Bc6 Nd7 20.Qd7 Kf8 21.Qd8) 1–0. Pierre – Waldorffy, internet, 2020.

5.a3 d5 6.cd5 Qd5 7.Nf3 Bd6 8.Qa4 Nf6 9.Nc3 Qe6 10.b5 Ne7 11.d4 0-0? 12.Bc4+- Qd7?? 13.de5 Ne4 14.Ne4 Be4 15.ed6 d6 16.Bf7! Rf7 17.Qe4 Rd8 18.0-0 Ng6 19.Qb7 Qc5 20.a4 c6 21.Qc6 Qb4 22.Bd4 Ne7 23.Qe6 Re8 24.Ng5 Ref8 25.Rac1 Qa4 26.Rc7 Qb4 27.Nf7 Rf7 28.Ra7 h6 29.Ra8 Kh7 30.Qf7 Ng6 31.Qg7# 1–0. pierre – opponent, internet, 2009.

5.a3 Nh6 6.Nc3 Be7 7.b5 Nb8 8.Nf3 0-0 9.Be2 f6 (9...a6!?=) 10.d4 e4 (10...a6!?+=) 11.Nd2+/- c6 12.0-0 a6 13.Qa4 Nd7 14.bc6 bc6 (14...Nb6 15.Qb3 Be6 16.d5+-) 15.Qc6 (worse is 15.Nce4 Nb6 16.Qa5 Nd7 17.Qd8 Rfd8+/-) 15...Rf7 (15...Rb8 16.Qd5 Rf7 17.Rfb1+-) 16.Nd5 (16.Rab1 Qc8 17.Qc8 Rc8 18.Nce4 Rb8+-) 16...Nf8 17.Rfb1 Rb8 (better is 17...Ng6+-) 18.Bc3 Rb1 19.Rb1 Bg4 (19...a5 20.Rb7 a4 21.Qa4+- (21.Ne7?! Re7 22.Rb5 Qd7 23.Qd5 Be6 24.Qe4 Qe8+-; 21.Re7?! Re7 22.Ne7 Qe7+-)) 20.Bg4 Ng4 21.h3 Nf2 22.Kf2 f5 23.Bb4 Bh4 (23...a5 24.Ne7 Qe7 25.Bd6 Qh4 26.Kg1+-) 24.g3 f4 (24...Be7 25.Qa6 Ng6 26.Ne7 Re7 27.Qd6+-) 25.ef4 Ne6 (25...Bf6 26.Nf6 Qf6 27.Qd5 e3 28.Ke3 Qe7 29.Ne4+-) 26.Qd6 Nf4 (26...Nd4 27.gh4 e3 28.Ne3+-) 27.Qd8 (27.gh4 Qh4 28.Kf1 Nd5 29.Kg1 Nb4=) 27...Bd8 28.gf4 1–0. Janek – Paul, internet, 2016.

5.b5 Na5 (6.Bc3 c5=; 5...Nce7 6.d4=). Boehnke,Hartmut – Pieleck,Andreas, remoteschach.de, 2003.

6.Nc3 a6 7.Nf3 Be7 8.d4 ed4 9.Nd4 Nd4 10.Qd4 0-0 11.Be2 c6 12.0-0 b5 13.Rfd1 Re8 14.g4 Be6 15.g5 Nd7 16.Nb5! Bf6? 17.gf6+- ab5 18.cb5 Nf6 19.Qd6 cb5 20.Bb5 Qd6 21.Rd6 Ne4 22.Rd4 Ng5 23.Be8 Nf3 24.Kg2 Nd4 25.Bf7! Kf7 26.Bd4 Bd7 27.Kg3 Bb5 28.Kf4 g6 29.Ke5 Re8 30.Kd6 Rd8 31.Kc5 Bd3 32.a4 Ke6 33.b5 Rf8 34.f4 Rc8 35.Kb6 Rc2 36.a5 Rh2 37.a6 Rh5 38.Be5 Rh3 39.Ra4 Re3 40.a7 Re5 41.fe5 Bc2 42.Rb4 h5 43.a8Q g5 44.Rd4 Ke5 45.Qd5 Kf6 46.Qc6 Ke5 47.Qc5 Ke6 48.Rd6 Kf7 49.Qc7 Ke8 50.Rd8 1–0. miehnekort – bolotjkt71, Yahoo, 2005.

6.Nc3 Be7 7.Be2 0-0 8.d3 Re8 9.Nf3= e4 10.de4 Ne4 11.Nd5 Bh4 12.Nh4 Qh4 13.g3 Qd8 14.f3 Ng5 15.e4 Bd7 16.Qc2 Ne6 17.0-0-0 a5= 18.b5 Na7 19.Qc3 c6 20.Nf4+/- Qg5 21.Kb1 cb5 22.h4 Qh6 23.Rd6+= Rad8 24.Rhd1+- Re7?? 25.Nd5 Ree8 26.Ne3 b4 27.ab4 ab4? 28.Qd2 Nc6? 29.f4 Bc8 30.Qc1 g6?? 31.Ng4+- Qf8 32.Nf6 (32.Nf6 Kh8 33.Ne8 f6 34.Bf6 Kg8 35.Bd8 Qe8 36.Bb6+-) 1–0. Zuazua Iglesias,Fernando – Dominguez,Ricardo, Asturia Primera B, 1997.

6.d4 ed4 7.b5 de3 8.bc6 ef2 9.Kf2 Ne4 10.Ke2 bc6 11.Nd2 =.

6.Nf3 a6 7.d4 e4 8.Nfd2 d5 9.Be2 h6 (9...dc4 10.Nc4 Qd7 11.Nc3=) 10.Nc3+= dc4 11.Bc4 Bg4 (11...b5!? 12.Ba2 Rb8+/-) 12.Qb3 Qe7 13.0-0 (13.Qc2 Bf5+/-) 13...b5 14.Nb5 (better 14.Bd5 Nd5 15.Qd5+/-) 14...ab5= 15.Bb5 Qd7?? (better 15...Bd7=) 16.Rac1 (16.Qc2 Qd8 17.Bc6 Bd7 18.Ba8 Qa8 19.Qc7 Be7+-) 16...Bb4? (16...Be6 17.Qc3 Bd5+-) 17.ab4 (17.Bc6!? Bd2 18.Bd7 Bd7 19.Rc7 Ba5+-) 17...Be6 18.Qc2 Bd5 19.Qc5 (19.Bc6 Bc6 20.Qc6 Qc6 21.Rc6 Ra2+-) 19...h5 (19...Rb8 20.Bc6 Qc6 21.Qc6 Bc6 22.Rc6 Rb4 23.Bc3+-) 20.Ra1 (better 20.Bc6 Bc6 21.Qc6 Qc6 22.Rc6 Ra2+-) 20...Rb8 21.Ra6 Rb5 22.Qb5 0-0 23.Rc1 (23.Qc5!? Rb8 24.Ba3 Nd8+-) 23...Rb8 24.Qc5 (24.Qa4 Nb4 25.Qd7 Nd7 26.Ra5+/-) 24...Nb4-/+ 25.Ra7 Nd3 26.Qa3? (26.Qc7 Qc7 A) 27.Rcc7? Rb2 (27...Nb2?! 28.h3=+) 28.Nf1 Rf2-+; B) 27.Rac7 Rb2 28.R1c2-/+) 26...Rb2-+ (26...Nb2?! 27.Rac7 (27.Rcc7? Qg4-+) 27...Qd8 28.Qc3-/+) 27.Rcc7?? (27.Qc3-+) 27…Qg4 (27...Qg4 28.h3 Qd1 29.Kh2 Qd2 30.Rf7 Bf7-+) 0-1. jhonores (2195) - v4dim1988 (2205), Rated Blitz game, lichess.org, 2020.

6.Nf3 e4 7.b5 Na5 8.Nd4 Bg4 9.Qa4 Nc4? (better is 9...b6=) 10.Qc4 1–0. Fournier,Frederic (1990) – NN, Active, 2004.

6.Nf3 Be7 7.b5 Nb8 =.

6.Nf3 Be7 7.Be2 0-0 8.d3 d5 (better is 8...Re8!?=) 9.cd5+/- (9.Be5?! dc4 10.dc4 Ne5 11.Ne5 a5=) 9...Nd5 (9...Qd5 10.e4 Ne4 11.de4 Qd1 12.Bd1 Be4+-) 10.Ne5 (better is 10.b5 Na5 11.e4+- (11.Ne5?! Bf6+/-; 11.Be5?! Bf6+/-)) 10...Ne5+= 11.Be5 Bf6 12.Bf6 Qf6 13.Nd2 Nc3 14.Qc1 Ne2 15.Ke2 Rfd8 16.d4 Qg6 17.g3 Bd3 18.Ke1 (18.Kf3 c5 19.dc5 Qc6 20.e4 f5+=) 18...Qh5 (18...Rd4 19.Qc7 Re8 20.Qb7 Ba6-+) 19.Qd1 Qd1 (19...Qb5 20.Qb3+=) 20.Kd1+/- Rac8 21.Nf3 Be4 22.Ke2 b6 23.Rac1 Rd5 24.Rhd1 c5 25.dc5 Rd1 26.Rd1 Bf3 27.Kf3 bc5 28.bc5 g6 29.Rc1 Rc6 30.Ke4 Kg7 31.Kd5 Ra6 32.Rc3 Kf8 33.c6 Ke8 34.Kd6 Kd8 35.f4 Kc8 36.Ke7 Rb6 37.Kf7 Kc7 38.Kg7 Rb5 39.Kh7 g5 40.fg5 Rg5 41.Kh6 Rg8 42.Kh7 Rg4?? 43.h4+- Rg3 44.h5 a5 45.h6 a4 46.Kh8 Rg6 47.h7 Kc8 48.e4 Kc7 49.e5 Kc8 50.c7 Re6 51.Rc5 Rg6 52.e6! Re6 53.Kg7 Re7 54.Kg6 Re6 55.Kf7 Rh6 56.Kg7 Rd6 57.h8Q Kd7 58.Qd8 Ke6 59.c8Q Rd7 60.Qcd7 (60.Qdd7?!=) 1–0. Fournier,Frederic (1735) – mvs (1765), Active (2/0), 2005.

6.Nf3 Be7 7.Be2 0-0 8.d4 e4 9.Nfd2 Qd7 10.0-0 Nd8 11.d5 c6 12.Nc3 cd5 13.cd5+/- a6 14.Na4 Qe8 15.Nb6 Rb8 16.Rc1 Nd7 17.Bg4 Nb6 18.Bf5 Nd5 19.Ne4 Ne6 20.Qd5 Kh8 21.Rfd1 Rd8 22.Qb7 Ng5 23.Rc7 Ne4 24.Re7 Qa4 25.Qd5 Qc2 26.Bg7! Kg7 27.Qd4 Nf6 28.Bc2 (28.Bc2 Rfe8 29.Re8 Re8 30.Qf4+-) 1–0. b4_player – gaurav_chessgod, gamecolony.com, 2007.

6.a3? Nc2-+ 7.Ke2 Na1 8.Ba1 Qh4 9.Qb3 Qe4 10.Nc3 Qd3 11.Ke1–/+ Qc2 12.Qc2 Bc2 13.Nd5 0-0-0 14.Nf3 Be4 15.Be2 Bd5 16.cd5 Nf6 17.d4 Nd5 18.a4? Nb4-+ 19.Bb2 Nc2?? 20.Kd2 Nb4 21.Bc3 Na2 22.Bc4 Nc3-+ 23.Kc3 d5 24.Bb3? a5 25.ba6–/+ ba6?? 26.Ne5+/- Re8 27.Nf7 Rg8 28.Bd5 g6 29.Nh6?? Bh6=+ 30.Bg8 Rg8 31.h4 Rf8 32.f4 Re8 33.Kd3 Bg7 34.g4 h5 35.Rg1 Bf6 36.g5 Be7 37.e4 Rf8 38.Rf1 Bd6 39.f5 Bg3 40.f6 Bh4–/+ 41.e5 Bg5 42.f7 Kd8 43.d5 Ke7-+ 44.Kd4? Rf7 45.Rf7 Kf7 46.e6 Ke7 47.Kc5 Bf4 48.Kb4 h4 49.Ka5 Be3 50.Ka6 h3 51.a5 h2 52.Kb7 h1Q 53.Kc7 Qd5 54.a6 Qc5 55.Kb8 Bf4 56.Ka8 Qc7 57.a7 Qc8# (57...Qc6#) 0–1. Moehring,Andreas – Meyer,Christian, Saarland–ch U18, 1992.

6.d3 d5 7.a3+= dc4 8.ab4 Bb4 9.Bc3 Bc3 10.Nc3 cd3 11.e4 Bg6 12.Bd3 Nf6 13.Nf3 0-0 14.0-0 Re8 15.Qc2 Qe7 16.Ra4 Qd6 17.Rfa1 Qb6 18.h3 Nd7? 19.Nd5 Qd6 20.Nc7 Rec8 21.b6 Nb6=+ 22.Nb5 Qd7 23.Ne5+= Qe6 24.Qb2 Na4 25.Ra4 a6 26.Bc4 Qf6= 27.Qa1 Be4 28.Bf7+/- Kh8 29.Re4 ab5 30.Qb2 Rf8 31.Qb3 Ra1+= 32.Kh2 Qf2 33.Qb4 Qg1 34.Kg3 Rf7 35.Nf7 Kg8 36.Nd6 Ra8 37.Qb3 Kh8 38.Nf7 Kg8 39.Nh6 Kh8 40.Qg8!! Rg8 41.Nf7# 1–0. Malchikov,Anton – Yuzhakov,Oleg, RUS–ch U10 Serpukhov, 1999.

6.d3 d5 7.a3 dc4 8.ab4 cd3 9.Be5 Bb4 10.Nd2 f6 11.Bg3 Qd7 12.Ngf3 a5 13.ba6 b6? 14.Nd4 Bg6 15.Qf3 Ra7 16.Nc6 Bd2 17.Kd2 Ra8 18.Ne5! fe5 19.Qa8 Kf7 20.Be5 Ne7 21.Qh8 (21.Qh8 Qf5 22.f4+-) 1–0. Trkn – guest1847, ICC, 2004.

6.d3 d5 7.Be5 dc4 8.e4 Bg6–/+ 9.a3 Nd3 10.Bd3 cd3 -+.

6.d3 e4 7.d4 =+.

5.cd5 Qd5 6.Nc3 Qd6 7.a3 Nf6 8.Bc4 Be7 9.Qf3+/- e4?? 10.Qf5+- Nc6 11.Ne4 0-0 12.Nd6 Bd6 13.Bf6 gf6 14.Qf6 Be5 15.Qg5 Kh8 16.d4 Bd6 17.Qf6 Kg8 18.Bd3 Ne7 19.Nf3 Nd5 20.Qg5 Kh8 21.Qf5 Nc3 22.Qh7# 1–0. MarcosRamos – grandslam842, internet, 2007.

5.Be5 Bb4?? 6.Bg7+- dc4 7.Bh8 Bd3 8.Nh3 Qh4 9.Bd3 cd3 10.Qb3 Qg4 11.Nf4 Nc6 12.a3 0-0-0 13.ab4 Nf6 14.Bf6 Nd4 15.Bd4 (15.Bd4 Rd4 16.Ra7+-; 15.Qd3 Ne6 16.Bd8 Nf4 17.ef4 Qg2+-) 1–0. bambinik – Christer, itsyourturn.com, 2001.

5.Be5 dc4 6.Qf3 Bb1 7.Rb1+/- (7.Rb1 Nd7 8.Bc3+/-) 1–0. mrkt – tapiaruano, Yahoo, 2005.

5.a4 g6 6.Nc3 Bg7 7.Be2 Ne7 8.Nf3 0-0 9.d4 c6 10.h3 a5 11.ba5 Qa5=+ 12.e4? ed4 13.Nd4 Be4 14.0-0 Bf5 15.g4 Be6 16.Ne6=+ fe6 17.Qd6 Bc3 18.Bc3 Qc3 19.Qd7 Rf7 20.Qd3 Qd3 21.Bd3 Rf3 22.Be4 Rh3=+ 23.Rfb1 Rb8 24.a5+= Rc3 25.a6+/- b5? 26.cb5 Nd5 27.Bd5 cd5 28.b6 +/-. Zylla,Johannes – Halle, BS–MK Kreisliga, 1994.

5.b5 Nc5 6.d3 a6=+ 7.a4 Nf6 8.Nf3 e4 9.de4 Be4 10.Nc3 Be7 11.Be2 0-0= 12.0-0 c6 13.Nd4 Qc7 14.Ne4 Nfe4 15.Nf5 Nf6 16.Qd4 Nb3 17.Qh4 Na1 18.Qg5 Nh5 19.Ne7 Kh8 20.Bd3 f5 21.Ra1 ab5 22.cb5 (22.cb5 Nf6 23.Nf5+-; 22.Qh5?! Qe7 23.ab5 Ra1 24.Ba1 Qf7+-; 22.Bf5?! Nf6 23.Ng6 hg6 24.Qh4 Kg8 25.Be6 Rf7 26.cb5 Qe7 27.Bf7 Qf7 28.bc6 bc6+-) 1–0. pierred (2595) – hasant (1915), net–chess.com, 2008.

5.Nf3 Be7 6.Nc3 c6 7.Be2 Bf6 8.d4 Ne7 9.de5 de5 10.0-0 0-0 11.Qb3 Qc7 12.Nd2 Rad8 13.Nde4 Ng6 14.c5 Be7 15.Ng3 Be6 16.Bc4 Bc4 17.Qc4 b5 18.Qb3 a5 19.Nf5 ab4=+ 20.Ne7 Ne7 21.Qb4 f5 22.a4 ba4 23.Ra4 Rb8 24.Qc4 Kh8 25.Ba3 Nf6 26.Bb4 Ned5 27.Rfa1 Rb7 28.Nd5 Nd5 29.h3 Rfb8 30.Ba5 Qc8 31.e4=+ fe4 32.Qe4 Qe6 33.Bd2 Nf6 34.Qe1 Qf5 35.Ra8 h6 36.Rb8 Rb8 37.Be3 Nd5 38.Rc1 Rb3 39.Bd2 Qd3 40.Ra1 e4 41.Rd1 Rb2 42.Bh6+= Qb5 43.Bg7 Kg7=+ 44.Qe4 Qe2 45.Qd4 Kg6 46.Rd3 Qe1–/+ 47.Kh2 Qf2 48.Qg4=+ Kh6 49.Rf3 Qe1?? 50.Rf5?? Rg2?? 51.Qg2+- Qe3 52.Qf2 Qe4 53.Qf3 Qe8 54.Qg4 Qb8 55.Qg3 Qb2 56.Rf2 Qd4 57.Rg2 Qf6 58.h4 Nf4 59.Qg5 Qg5 60.Rg5 Ne6 61.Re5 Nd4 62.Kg3 Kg6 63.Re4 Nf5 64.Kg4 Ng7 65.Re7 Kf6 66.Rc7 (66.Rc7 Nf5 67.Rc6 Ke5 68.h5+-) 1–0. Jacobi,Karl Heinz – Dorn,Frank, Lueneburg distr–ch, 1995.

5.Nf3 Be7 6.d3 Ngf6 7.Be2 0-0 8.Nc3 h6 9.0-0 c6 10.e4 Bh7 11.a3 d5 12.ed5 cd5 13.cd5 Nb6 (13...a5 14.b5+=) 14.Re1 Nfd5 15.Nd5 Qd5 16.Be5 f6 17.Bb2 Bd6 18.h3 Rad8 19.Qc2 Nd7 20.Rad1 Ne5 21.Be5 fe5 22.Bf1 Bc7?? (22...b5 23.Qe2+/-) 23.Qc4 (better is 23.Qc7 Bf5 24.d4+-) 23...Bb6? (better is 23...Qc4!? 24.dc4 Rd1 25.Rd1 e4+/-) 24.Qd5 (24.d4!? Kh8 25.Qd5 Rd5 26.Re5 Re5 27.de5 Be4+-) 24...Rd5 25.Re5 Bf2 26.Kf2 Re5= 27.Kg1 Rd5 28.d4 Rfd8?? 29.Bc4+/- Kf8 30.Bd5 Rd5 31.Kf2 Ke7 32.Rd2 Kd7 33.Ne1 Rf5 34.Ke3 Rf1 35.Nf3 Ra1+= 36.Rd3?? Bd3-+ 37.Kd3 Ra3 38.Kc4 Ra2 39.g4 Rf2 40.Ne5 Ke6 41.h4 Rf4 42.h5 b6 43.b5 Rf2 44.Kc3? Rf1 45.Kc4 Rb1 46.Ng6? Rg1-+ 47.Ne5 Rg2 48.Kc3? Re2 49.Kd3?? Re5 50.de5 Ke5 51.Ke3 Kd5 52.Kd3 Kc5 53.Kc3 Kb5 54.Kb3 Kc5 55.Kc3 Kd5 56.Kb4 Ke5 57.Kb5 Kf4 0–1. Fournier,Frederic – ALAINDAMO, Partie evaluee, 3m + 0s, 2008.

5.Nf3 Be7 6.Be2 Ngf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 Nbd7 6.Be2 Be7 ).

5.Nf3 f6 6.d3 Ne7 7.Nc3 g5 8.Be2 h5 9.Nd2 g4 10.h3 Bg7 (better is 10...Rg8!?+=) 11.hg4+/- hg4 12.Rh8 Bh8 13.Bg4 Bg4 14.Qg4 f5?? (better is 14...Nf8+-) 15.Qh5 (15.Qh5 Kf8 16.Qh8 Kf7 17.Qh5 Ke6 18.d4+-) 1–0. Janek – Damian, internet, 2016.

5.Nf3 Ngf6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 Nbd7).

5.Nf3 Bg4 6.Be2 e4 7.Nd4 Be2 8.Qe2+=.

5.Nf3 Bg4 6.Be2 Ne7 7.0-0+= Ng6 8.Nc3 h6 9.d4 Be7 10.h3 Bf3 11.Bf3 (11.gf3?! a5 12.b5 0-0=) 11...Rb8 12.Qa4 a6 13.c5 0-0 14.Rad1 ed4 15.ed4 (15.Rd4?! Nge5 16.cd6 Nf3 17.gf3 Bd6=) 15...Qe8 16.Nd5 c6 17.Ne7 Qe7 18.Rfe1 Qf6 19.Qb3 d5 20.Bg4 Rbd8 21.g3 Nb8 22.Qe3 Rfe8?? (better is 22...Nd7+/-) 23.Qe8+- Re8 24.Re8 Kh7 25.Rb8 h5 (25...Qe7 26.Kf1 Qe4 27.Re1 Qd3 28.Kg2+-) 26.Bh5 Qg5 (26...Qf5 27.Bg4 Qc2 28.Bc1+-) 27.Bg4 f5 28.Bc1 Qf6 29.Bh5 f4 (29...Qe7 30.Bd2+-) 30.Rb7 fg3 31.fg3 Qf5 32.Bg4 Qc2 33.Rc7 Qc3 34.Kf2 Qb4 35.Rc6 Qa4 36.Rd6 Qa2 37.Rd2 (37.Rd2 Qb1 38.Re2+-) 1–0. Janek – Vance, internet, 2016.

5.Nf3 Bg4 6.Be2 Ngf6 7.0-0 Bf3 8.Bf3 e4 9.Be2 a6 10.Nc3 Be7 (10...Qe7 11.d3+/-) 11.d3 (11.Qc2!?+-) 11...ed3+= 12.Bd3 0-0 13.Nd5 Nd5 14.cd5 c6? (14...Bf6 15.Qh5 g6 16.Bf6 Qf6+= (worse is 16...gh5 17.Bd8 Rfd8 18.Rfc1+/-)) 15.dc6+- bc6 16.Qc2 g6 17.a3 (17.Qc6 Ne5 18.Qd5 Nd3 19.Qd3 Bf6 20.Bf6 Qf6+-) 17...Ne5 18.Be2 Bf6 19.Rad1 Qe7 20.Be5 Be5 21.Qc6 Rfc8 22.Qa4 Qh4 (22...Rc3 23.Rc1 Rc7 24.Rfd1+-) 23.g3 Qe7 24.Rc1 Rc1 25.Rc1 Bb2 26.Rc2 Be5 27.Qc6 Kg7?? (27...Qa7+-) 28.Qa8 1–0. Fournier,Frederic – NN, jeu.europe–echecs.com, 2013.

5.Nf3 a5 6.b5 g6 7.d4 e4 (7...Bg7 8.Be2+=) 8.Nfd2 (better 8.d5 Rg8 9.Nfd2+/-) 8...c6? (8...d5 9.Nc3+/-) 9.Nc3?? (better 9.g4 Bg4 10.Qg4+-) 9...d5+/- 10.a4 Bg7 11.Qb3 0-0 12.Ba3 dc4 (12...Be6!?+/-) 13.Bc4+- cb5 14.ab5 Nd7 15.Nde4 Nb6 Black prepares a4 16.Bd3 a4 (16...Be6 17.Qc2+/-) 17.Qd1 Rc8 18.0-0 Re8 19.Rc1 (19.Nc5 Bd3 20.Qd3 Ned5 21.N3a4 Na4 22.Na4 Ne3 23.fe3 Re3+/-) 19...Ra8? (19...Ned5 20.Nd5 Rc1 21.Qc1 Qd5 22.Nc3+/-) 20.Nc5 (20.Nd6!? Bd3 21.Qd3 Rf8 22.Nb7 Qd7+-) 20...Bc8 (20...Ra7!? 21.Bf5 Nf5 22.N3a4 Na4 23.Na4+/-) 21.N3a4 Na4 22.Na4 Nd5 23.Nc5?? (better 23.Qb3+-) 23...Ra3-/+ 24.Qf3 b6 25.Na6?? (better 25.Bc4 Nf6 26.Na6-/+) 25…Rd3 (25...Rd3 26.Rc8 Qc8 27.Qd5 Rd8-+) 0-1. jhonores (2240) - samuel22bastidas (2155), Rated Blitz game, lichess.org, 2020.

5.Nf3 Nd7 6.Be2 Nf6 (6...Nc6 7.b5 Nb4 8.d3=) 7.b5 (7.0-0 Ng6=) 7...e4 (7...a6 8.0-0=) 8.Nd4+= c5 (8...Bg6!?+=) 9.Nf5+/- Nf5 10.Nc3 Be7 (10...a6 11.d3+/-) 11.g4 (11.Qc2 d5+/-) 11...Nh4 12.g5 Ng2 (better is 12...Nd7+/-) 13.Kf1+- Qd7 (13...Nh4 14.gf6 Bf6+-) 14.Kg2 h5 (14...Ng8 15.Ne4 h6 16.Bg7+-) 15.gf6 Bf6 16.d3 h4 (16...ed3 17.Qd3 Rh6 18.Rhb1+-) 17.Bg4 Qc7 (17...h3 18.Kg1 Qd8 19.de4+-) 18.Nd5 Qd8 19.Bf6 gf6 20.de4 Rg8 21.Kh3 Kf8 22.Bf5 Qa5 (22...Rg5+-) 23.Qh5 Qc3 24.Rhg1 Rg1 25.Rg1 1–0. Janek – Tundja, internet, 2017.

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

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

5.Nf3 Nbd7 6.Be2 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 Nbd7 6.Be2 Be7).

5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Bf5).

5.Nf3 Be7 6.Be2 Nbd7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 Nbd7 6.Be2 Be7).

5.Nf3 Bg4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 Bg4).

5.d4= Nd7 6.Ne2 Bg7 7.Ng3+= Bb1 8.Rb1 Ngf6 9.Bd3 0-0 10.0-0 Re8 11.Qf3 c6 12.b5 d5 13.bc6 bc6 14.cd5 cd5 15.Bb5 e4= 16.Qe2 a6 17.Bc6 Rb8 18.Qa6+/- Re6 19.Rfc1 Nb6 20.Qe2+/- Nc4 21.Bd5+- Nd5 22.Rc4 f5 23.Rc5 Reb6 24.Qc4+- Rb2?? 25.Rb2 Rb2 26.Rd5 Rb1 27.Nf1 Qg5 28.Rd8# 1–0. b4_player – opponent, gamecolony.com, 2007.

5.Be2 Bg7 6.f4 Ne7 7.fe5 de5 8.Nf3 Nbc6 9.a3 0-0 10.0-0 Qd7? 11.b5+/- Na5 12.Be5 Bh6 13.Bc3 Nc4? 14.Bc4 Rad8 15.Qe1 Bg4 16.Ne5 Qd6 17.Ng4 Be3 18.Ne3 Qb6 19.Qf2 Nf5 20.Nf5 Qf2 21.Rf2 Rde8 22.Nh6# 1–0. Hibbitt,Arthur M (1895) – Sant Maria,L, BCF–chT4, 2007.

5.Nf3 Bg7 6.d4 Nc6 7.Qb3 Qe7 8.Be2 e4 (8...ed4 9.b5 Ne5 10.Nd4= (worse 10.ed4 Nd3 11.Kf1 Nb2=+)) 9.Nfd2 Nh6 10.a4 (10.Nc3 0-0+/-) 10...Bg4 (10...Qg5 11.Bf1=) 11.Nc3 Be2 12.Ne2 0-0 13.a5 Kh8 (13...a6 14.Nf4+=) 14.b5 Nd8 15.0-0 f5 16.Nf4 Ne6 17.Nd5 White intends b6 (17.Ne6 Qe6 18.a6 b6+/-) 17...Qd7+= 18.b6 (18.a6 c6 19.ab7 Qb7+=) 18...c6= 19.Nc7 (better 19.Nc3!?=) 19...Nc7=+ 20.bc7 Qc7 21.Ba3 f4 (better 21...Ng4!?-/+) 22.Ne4= Nf5 23.Rab1 (23.Qd3!?=) 23...Rae8 (worse 23...Qa5 24.Nd6 (24.Qb7?? Qa3 25.g4 Nh4-+; 24.Bd6?! Nd6 25.Nd6 Qc7+=) 24...fe3 25.fe3 Nd6 26.Bd6 Rf1 27.Rf1+=) 24.f3 (24.Qd3 A) worse 24...Qa5 25.Bd6 (25.Rb7? fe3 26.Bb4 ef2 27.Nf2 Qa6-+) 25...Nd6 26.Nd6+/-; B) 24...Qe7 25.g4 fg3 (worse 25...Qe4 26.Qe4 Re4 27.gf5=) 26.Ng3 Nh4=+) 24...Ne3 (24...fe3 25.Qb7 Qb7 26.Rb7 Bd4-+) 25.Bd6=+ Qd7 (better 25...Qa5!? 26.Bb4 Qh5 27.Bf8 Rf8=) 26.Bf8+/- Bd4? (better 26...Rf8 27.Qb7 Qd4+/-) 27.Bc5 Re4 28.fe4 (better 28.Qb7!? Nc4 29.Kh1 Qb7 30.Rb7 Bc5 31.fe4 Na5 32.Rd7+-) 28...Bc5+/- 29.Rf3 (29.Qb2 Kg8 30.Qe5 (30.Qb7? Nf1 31.Kh1 Qb7 32.Rb7 Nd2-+) 30...Nf1 31.Qc5+/- (31.Kf1 Qd3 32.Ke1 Qb1 33.Ke2 Qc2 34.Kf3 Qf2 35.Kg4 Qg2 36.Kf4 Qh2 37.Kg5 Qe5 38.Kg4 h5 39.Kf3 Qh2 40.e5 Qf2 41.Ke4 Qe3)) 29...Nc4? (better 29...Qd2 30.Qb2 Qb2 31.Rb2 Nd1 32.Rbf2 b5-+ (worse 32...Nf2 33.Rf2 Kg7 34.Kf1 Bf2 35.Kf2-+)) 30.Kh1+- Nd2 31.Qb2 Kg8 (31...Qd4 32.Qd4 Bd4 33.Rb7 Nf3 34.gf3+-) 32.Rd1 Be3 33.Rf2?? (33.Qa2 Kf8 34.Qa3 Kg8 35.Re3 fe3 36.Qe3 Nc4 37.Rd7 Ne3 38.Rb7 a6+-) 33...Bf2? (better 33...Ne4 34.Rd7 Nf2 35.Qf2 Bf2 36.Rb7 g5+=) 34.Rd2+- (34.Qd2?! Qd2 35.Rd2 Be1 36.Rd8 Kf7 37.Rd7 Ke6 38.Rb7 Ba5 39.Ra7 Bb4+/-) 34...Qg4 (34...Qe7 35.Rf2 Qe4 36.Qb3 Kf8+-) 35.Qb3 (better 35.Qf6 Qc8 36.Rd8 Qd8 37.Qd8 Kf7 38.Qd7 Kg8 39.Qb7 Bc5+-) 35...Kg7 36.Rf2 (36.Qb7?! Kh6 37.Qc7 Qh4+-) 36...h5 (36...b6 37.ab6 ab6 38.h3+-) 37.h3 Qd7 38.Rf4 a6 (38...Qc7 39.Qb2 Kh7+-) 39.e5 Kh6 (39...Qe7 40.e6 Kh6+-) 40.e6 Qe8 41.Re4 (41.Qe3 Kg7 42.e7 Kh8 43.Rf8 Kg7 44.Qe5 Kh6 45.Re8 g5 46.Qf6 Kh7 47.Rh8) 41...c5 42.e7 Kg7 43.Qc3 Kg8 44.Qc5 (44.Qd3 b6 45.Qd8 Kf7 46.Rf4 Ke6 47.Qe8 g5 48.Qg6 Kd5 49.e8Q gf4 50.Qd3) 44...h4 45.Qd5 Kg7 (45...Kh7 46.Rh4 Kg7 47.Qe5 Kg8 48.Qf6 Qe7 49.Rh8) 46.Qd8 (46.Qe5 Kh7 47.Rh4 Kg8 48.Qf6 Qe7 49.Rh8) 46...Kf7 (46...Kg8 47.Qe8 Kh7 48.Rh4 Kg7 49.Qf8) 47.Rf4 Ke6 48.Qe8 Ke5 (48...g5 49.Qf7 Ke5 50.e8Q Kd6 51.Qfe6 Kc5 52.Rc4) 49.Qf7 (49.Qb8 Kd5 50.e8Q b5 51.Qbe5) 49...Kd6 (49...b6 50.e8Q Kd6 51.Qg6 Kd5 52.Qgc6) 50.e8Q g5 (50...b5 51.Qg6 Kd5 52.Qgc6) 51.Rf6 (51.Qfe6 Kc5 52.Rc4) 51...Kc5 52.Qc7 (52.Qb3 b5 53.Qe5) 52...Kb4 53.Qe1 (53.Rf3 b5 54.Qe4) 53...Ka4 54.Qb1 (54.Qc4 Ka3 55.Qec3) 54...Ka3 (54...b5 55.Qbc2 Kb4 56.Q7c3) 55.Qc3 Ka4 56.Qcb4 (56.Qbb3) 1-0. jhonores (2170) - jugandoa3 (2160), Rated Blitz game, lichess.org, 2020.

5.Nc3 f5 6.Nf3 Nd7 7.Qb3 Ngf6 8.Be2 h6 9.0-0 Be7 10.Nd5 (10.d4 0-0+/-) 10...c6 11.Ne7 Qe7 12.b5 0-0 13.c5 d5 14.bc6 bc6 15.Ba3 Kh8 16.Qa4 Rfc8 17.Ba6 Rc7 18.Rab1 f4 19.Rb7 Rac8 20.ef4 ef4 (20...Be4 21.fe5 Ne5 22.Ne5 Qe5 23.f3+-) 21.Re1 Qf7?? (21...Qd8 22.Rc7 Rc7 23.Qf4 Ne4+-) 22.Rc7 Rc7 23.Ne5 (better 23.Qa5 Nb8 24.Ne5+-) 23...Ne5= 24.Re5 f3 25.Qf4 (better 25.gf3!? Nh5 26.Qg4+/-) 25...fg2= 26.Bb2 Ne4 (26...Kh7 27.f3=) 27.Qf7 (better 27.Qh6! Kg8 28.Qe3+/-) 27...Rf7= 28.Bd4? (28.Re6 Nd2 29.Rc6=+ (29.Rg6?? Nf3 30.Kg2 Nh4 31.Kg3 Ng6-+)) 28...Nd2-/+ 29.Kg2 Be4 30.Kg3 Nf3 (30...Rf3 31.Kg4 Ra3=) 31.Re8=+ Kh7 32.Be3 Ne1 33.Be2 Nc2 34.Rc8 d4 35.Bd2 d3 36.Bg4 Nd4 37.Be3 (better 37.Re8!? Bf3 38.Be6 Ne2 39.Kh3 Nf4 40.Kg3 Nh5 41.Kh3-/+) 37...Ne2-+ 38.Kh3 Nf4 39.Kg3 Ne2 40.Kh4?? (40.Kh3 Bd5 41.Rd8-+) 40...g5-+ 41.Kh3 Ng1 (better 41...Nf4 42.Bf4 Rf4-+ (42...gf4?! 43.Re8 Bd5 44.Re1-+)) 42.Kg3 Ne2 43.Kh3 Bf3 (better 43...Nf4 44.Bf4 Rf4-+ (44...gf4?! 45.Rb8-+)) 44.Bf3= Rf3 45.Kg2 Rf7 46.Rd8 Nf4 47.Bf4 Rf4 48.Rd7 Kg6 49.Rd3 Rf5 50.Rd6 Rf6 51.Rd7 Rf5 52.Ra7 Rc5 53.Kf3 Rc2 54.a4 Kf5 55.Ra6 g4 56.Kg3 h5 57.Ra5 Kg6 58.Re5 Rc3 59.Kg2 1-0. carlos78 (2165) - oljica (2110), Rated Blitz game, lichess.org, 2015.

5.d4 Nd7 6.Nf3 e4 7.Nfd2 Ngf6 8.Nc3 Be7 9.Qc2 0-0 10.a3 Re8 11.0-0-0 ( 11.d5!?+=) 11...c6=+ 12.Re1 d5 13.g3 a5 14.b5 cb5 15.cb5 Nb6 16.Bh3 Nfd7 17.Kb1 Rc8 18.Qb3 Rc7 ( 18...Qc7!?–/+) 19.Nd5= Nd5 20.Qd5 Bf8? (20...Qa8!?=) 21.Nc4 (21.Rc1 Re7+-) 21...a4 22.b6 Rc6 23.Bd7 (23…Rc4 24.h4+-) 1–0. Bonetti,Shane – grapsch (1695), ICC, 2002.

5.Qb1 Nd7 6.g3 Ngf6 7.Bg2 c6 8.0-0 c5 (better 8...Be7!?+=) 9.bc5+/- Nc5 10.d4 ed4 11.Bd4 Rb8 12.Rd1 b6 13.e4! Be7 (13...Nce4 14.Re1 Pinning (14.Re1 Decoy); 13...Nfe4 14.Nh4 Decoy) 14.e5+- Nfd7 15.ed6 Bf6 16.Re1 Kf8 17.Qf5 Bd4 (17...Rc8 18.Rad1+-) 18.Nd4 g6 19.Qf4 (better 19.Qh3 Qf6 20.Qh6 Qg7 21.Qe3+-) 19...Kg7? (19...g5 20.Qf3 Qf6+-) 20.Re7 Rf8 21.Bd5 Nf6 (21...Rc8 22.Ne6 Ne6 23.Be6 Nf6 24.Bc8 Qc8 25.Ra7 Rd8+-) 22.Nf5 Kh8 (22...Kg8 23.Nh6 Kg7 24.Nf7 Qe7 25.de7 Nd5 26.cd5 Rf7 27.Qe5 Kh6 28.Qb8 Re7 29.Qf8 Rg7+-) 23.Qd4 Ncd7 24.Rd7! Qd7 (24...Qd7 25.Qf6 Mate attack) 25.Qf6 (25.Qf6 Kg8 26.Qg7) 1-0. pcmvr - jonsnow (2380), net-chess.com, 2021.

5.Rb1= Nc6 6.b5+= Nb4? 7.a3+- e4 8.Nd4 c5 9.Nf5 g6 10.Bh8 (10.Bh8 gf5 11.ab4 cb4 12.Qb3+-) 1–0. Wall,Bill – GeorgiaBoy, internet, 2003.

5.Nc3 Nf6 6.e3 Nc6 7.Be2 Nb4–/+ 8.d3 Nc6 9.Nd5 Nd5 10.cd5=+ Nb8 11.0-0 0-0 12.e4 Bg6–/+ 13.Qb3 Nd7 14.a4 Nc5 15.Qa3 c6 16.Qa2 Qc7 17.Rfc1 Kh8 18.Nd2 f5 19.dc6 fe4 20.cb7 Qb7 21.de4 Ne4 22.Bf3 Qb4?? 23.Ne4+- Be4 24.Rc4 Qd2 25.Re4 Rab8 26.Re2 Qd3 27.Rae1 Rb3? 28.Be4 (28.Be4 Qc4 29.Rc2+-; better is 28.Re3!? Rf3 29.Rd3 Rfd3+-) 1–0. algernon (2320) – rar (2025), net–chess.com, 2007.

5.e3 Bf6 6.Nc3= Ne7 (6...e4 7.Nd4 Bd4 8.ed4=) 7.d4 Nd7 8.Be2 0-0 9.h3 (9.0-0 c5=) 9...ed4 (9...c5 10.bc5 dc5 11.de5 Ne5 12.Qd8 Rad8 13.Na4 Nf3 14.Bf3 Bb2 15.Nb2=) 10.Nd4 Bg6 11.0-0 (11.a3 Ne5=) 11...Nc6 (11...c5 12.bc5 dc5 13.Ndb5=) 12.Nd5+= Bd4 13.ed4 Nb6 (13...Re8 14.Re1+=) 14.Nb6 ab6 15.a3 Re8 (15...Qf6 16.Qd2 d5 17.cd5+=) 16.d5 Ne7 17.g4 (17.Bg4 Nf5+=) 17...h6 (17...f6 18.Re1=) 18.f4+= f6 19.f5 Bh7 (19...Bf7 20.Bf3+=) 20.Qd2 Kh8 21.Rae1 Ng8 22.Bd3 Re1+- 23.Re1 Qd7 24.Re6 Re8 25.Qe2 Re6 26.de6+- Qd8 27.h4 Qf8 28.h5 Ne7+/- 29.b5 Qe8 30.Be4+- c6 31.Qd3 d5 32.Bf3 Qc8 33.Bd4 Qe6+/- 34.Qe3 Qd6 35.Bg2 Bf5?? 36.gf5+/- Nf5?? 37.Qe8+- Kh7 38.Qg6 Kg8 39.Qf5 Qa3 40.Qc8 (40…Kh7 41.Qg4 (41.cd5?! Qc1 42.Kf2 Qd2 43.Kg3 Qd4 44.Qf5 Kh8+-; 41.Qb7?! Qc1 42.Bf1 Qg5 43.Kf2 Qd2 44.Kf3 Qd4+/-) 41...Qc1 42.Bf1 dc4 43.bc6 bc6 44.Bb6+-; 40.cd5 cb5 41.Qe6 Kf8 42.Qc8 Kf7 43.Qc7 Kg8+-) 1–0. Lebel,Patrick (2170) – Kocur,Marc, NATO–ch, 2001.

5.e3 Nf6 6.d4 =+.

5.e3 Be7 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Bf5).

5.g3 h6 6.d3 c6 7.e4 Bg4 8.Bg2 d5 9.Qb3 de4 10.Ne5 Be6 (10...ed3 11.Ng4 (worse is 11.Nd3 Qe7 12.Kd2 Nbd7=) 11...Ng4 12.0-0+=) 11.0-0 (11.de4 Qe7+/-) 11...Qb6 12.a3 a5 13.Nc3 Nbd7 (better is 13...ed3!? 14.Nd3 Be7+=) 14.Nd7+- Nd7 15.Ne4 ab4 16.ab4 Ra1 17.Ra1 f6 18.Qd1 c5? (better is 18...Kf7 19.Bc3 Be7+-) 19.Qh5 Bf7 20.Ra8 Ke7 21.Qe2 Rh7 (21...Qe6 22.bc5 f5+-) 22.Nf6 Qe6 23.Nd5 Kd6 24.bc5 Nc5 25.Qd2 Be7 26.Qf4 1–0. michaelbuss – Bandy 1, ChessWorld.net, 2015.

4.a3 Be6 5.d3 d5 6.cd5 Bd5 7.Nc3 Bc6 8.e4 a6 9.Nf3 Nd7 10.Be2 b5 11.d4 Bb7 12.d5 (better 12.Qb3!?+-) 12...Bd6+/- 13.0-0 Ne7 14.Nh4 0-0 15.Bg4 Nb6 16.Be6 Kh8 17.Rc1 Nc4 18.Rc2 Bc8 19.Qh5 Be6 20.de6 Qe8 21.Qg4 Ng6 22.Nf3 (better 22.Ng6!? Qg6 23.Qf5=) 22...Nf4-/+ 23.Nd5 Ne6 24.Bc1 (24.Nh4 g6 25.Rd1 Rd8-/+) 24...c6 (better 24...Nd4!? 25.Nd4 ed4-+) 25.Ne3=+ g6 (better 25...h5!? 26.Qg3 c5=+) 26.Nc4+= bc4 27.Rc4 Rc8 28.Bb2 (better 28.Be3!?+=) 28...c5 29.Rfc1 (29.Rd1 Qe7=+) 29...Qd7 (29...h5!? 30.Qg3 Nf4-/+) 30.h4 cb4 31.ab4 Rc4 32.Rc4 Rd8 33.h5 Nf8 34.Qh4 g5 35.Ng5 fg5 36.Qg5 Qe7 37.Qf5 Ne6 (37...Nd7=+) 38.Rc6?? (38.Be5 Be5 39.Qe5 Kg8=) 38...Ng7 (better 38...Nd4!? 39.Bd4 ed4-/+) 39.Qg4= Re8?? (better 39...Rg8=) 40.h6+- Ne6 41.Qg3 Nd4? (41...Ng5 42.f4 Ne6 43.Rd6 Nf4+-) 42.Rc4 (better 42.Bd4 Rg8 43.Qh2+-) 42…Bb8 (42...Bb8 43.Qg4 Qf7=+) 0-1. AlexisArsenal (2190) - abena_abeni (2420), Rated Bullet game, lichess.org, 2015.

4.a4 Ne7 5.b5 d5 6.Nc3 (6.e3 Be6=+) 6...dc4-/+ 7.e3 Be6 8.Nf3 Nd7 9.Be2 g6 (9...Nc5 10.0-0-/+) 10.0-0 c6 (10...Nc5 11.Ba3 Nd3 12.Ne4=+) 11.d4 (11.Ne4 Nf5=) 11...cd3=+ 12.Bd3 Bg7 (12...Nc5 13.Ne4 Ne4 14.Be4-/+) 13.Ne4 0-0 14.Qc2 Bd5 15.Bc4 Kh8 16.Rfd1 Rc8 17.Ba3 (better 17.Nd6 cb5 18.ab5=) 17...Re8?? (better 17...cb5 18.Be7 Qe7 19.Rd5 Rc4-/+) 18.Nd6+- Nb6? (18...cb5 19.Rd5 Rc4 20.Qd1+-) 19.Bd5 (better 19.Rd5 cd5 20.Nf7 Kg8 21.Nd8 Nc4 22.Be7 Re7 23.Rd1+/-) 19...cd5 20.Qe2 f5?? (better 20...Qd7 21.Ne8 Re8 22.Be7 Re7+-) 21.Nf7 Kg8 22.Nd8 Rcd8 23.Be7 Re7 24.a5 Nc4 (24...Nc8 25.Rac1 Bf6 26.Rc5+-) 25.Rd5! (25.Rd5 Rc8 26.Rc1+-) 1-0. BeepBeepImAJeep (2555) - abena_abeni (2380), lichess.org, 2017.

4.Qb3 Be6 5.e3 Nd7 6.Nc3 Ne7 7.Nf3 Ng6 (7...a5 8.d4=) 8.d4+= ed4 9.ed4 (9.Nd4 Bf7+=) 9...Qe7 10.Be2 0-0-0 (10...Nf4 11.0-0+=) 11.0-0 Nf4 12.Bd1 g5 (12...d5 13.c5+= (13.Nd5?! Bd5 14.cd5 Qb4=)) 13.Re1+/- Qf7 14.d5 Bf5 15.Nd4 Bg6 16.Ncb5 a6? (16...Kb8+/-) 17.Nc3?? (17.Na7!? Kb8 18.Nac6 bc6 19.Nc6 Kc8+-) 17...g4? (better 17...Nd3!? 18.Re3 N7e5+=) 18.Bg4+- Rg8 (18...f5 19.Ne6 fg4 20.Nf4+-) 19.g3 (19.Be6 Qg7 20.g3+- (20.Bg8? Bc2 21.g3 Bb3 22.ab3 Qg8-+)) 19...Bh5? (better 19...f5 20.Be2 Bg7+/-) 20.Bf5 (20.gf4?! Bg4 21.Kh1 Bh6=) 20...Kb8 (20...Rg5 21.b5 a5 22.b6+-) 21.Ne6 Rc8 (21...Bh6 22.Nd8 Rd8 23.b5+- (23.gf4?! Qg7 24.Kf1 Rg8 25.Re8 Re8=+)) 22.b5 (22.Nf4 Bg4 23.Be6 Qg7+-) 22...a5 (22...Bg6 23.Bg6 Ng6 24.ba6 b6+-) 23.Ba3 (better 23.Nf4 Bg4 24.Be6 Qg7 25.Bg8 Qg8+-) 23...Ne5?? (23...Bg6 24.Qc2 Bh6+-) 24.c5 (24.Nf4!? Nf3 25.Kh1 Nd4+-) 24...dc5?? (24...Nf3 25.Kh1 Ne1 26.Nf4 Bh6 27.Bc8 Bf3 28.Kg1 Rc8 29.Re1 Bf4+-) 25.Qa4 (25.Nf4 Nf3 26.Kh1 Nd4+-) 25...b6?? (better 25...Nf3 26.Kh1 Nd5 27.Nd5 Ne1+=) 26.d6 (better 26.Nf4 Nf3 27.Kf1 Ne1 28.Be6+- (28.Ke1?! Re8 29.Be6 Bg4+-)) 26...cd6 (better 26...Ne6 27.dc7 Rc7 28.Nd5-+) 27.Nd5?? (better 27.Nf4 Nf3 28.Kf1 Nd2 29.Kg2 Qb7 30.Ne4 Bf3 31.Kg1 Be4 32.Be4 (32.Re4?! Nf3 33.Kf1 Nd2 34.Ke2 Ne4 35.Be4 Re8+-) 32...Ne4 33.Re4+-) 27...Ne6 (better 27...Nd5 28.Nf8 Rcf8 29.Rec1-+) 28.Nb6 Kb7?? (better 28...Nf3 29.Kf1 Ne1 30.Qa5 Bf3 31.Nc8 Nd4 (31...Kc8 32.Re1 Bd5 33.b6 Bc4 34.Kg1+-) 32.Re1 Nf5-+) 29.Qa5= (29.Qa5 Bh6 30.Qa6 Kc7 31.Nc8 Rc8 32.Bc5 Nc5 33.b6 (worse 33.Qc8 Kb6+-) 33...Kd8 34.Qc8 Ke7 35.f4+-) 1-0. ClayPigeons (2020) - clases_ajedrez (1975), Rated Bullet game, lichess.org, 2021.

4.b5 Ne7 5.Nc3 a6 6.ba6 Na6 7.Nf3 Be6 8.e3 g6 9.d3 Bg7 10.Rb1 0-0 11.Ba3 b6 12.Bb2 Nf5 13.e4 Ne7 14.a3 Nc5 15.Nb5 (15.Be2 f5-/+) 15...h6 16.Be2 f5 17.Nd2 Kh7 18.0-0 Qd7 19.a4 Na4 20.Ba3?? (20.Ba1 Nc5-+) 20...Nc6 (better 20...c6 21.Bd6 cb5-+) 21.Nb3 fe4 22.de4 Na5 (better 22...Nd4!? 23.Rc1 Ne2 24.Qe2 Nc5 25.Bc5 bc5-+) 23.Na5-/+ Ra5 24.Bb4 Raa8 25.Ra1 Nc5 26.Qc2 Na6 27.Bc3 Qc6 28.Rfd1 (better 28.Bd2!?-/+) 28...Bc4-+ 29.Bc4 Qc4 30.Na3 Qc6 31.Qb3? (better 31.f3-+) 31...Nc5 32.Qb2 (32.Qd5 Qd5 33.ed5-+ (33.Rd5?? Ne4 34.Be1 Nc5-+)) 32...Na4 33.Qb5 Qc3 34.Rdc1 Qd4 35.Rab1 (35.Qf1 c6 36.Rd1-+) 35...Qf2 36.Kh1 Nc5 37.Rf1 Qd4 38.Qe2 (38.Rf8 Rf8 39.Qe2 Rf2-+) 38...Qe4 (38...Rf1 39.Qf1 Ra3 40.h3 Ne4 41.Qf7 Nf2 42.Kg1 Nh3 43.Kh1 Nf4 44.Qd7 Rg3 45.Rf1 Qe4 46.Qg7 Kg7 47.Rf2 Qe1 48.Kh2 Qf2 49.Kh1 Qg2) 39.Qe4 Ne4 (39...Ra3?! 40.Qc6 Rf1 41.Rf1+=) 40.Rfd1 (40.Nb5 Rf1 41.Rf1-+) 40...Nf2 41.Kg1 Nd1 42.Rd1 Ra3 43.Rc1 Ra7 (43...e4 44.g4 Ra1 45.Ra1 Ba1 46.h4 e3 47.g5 e2 48.h5 e1Q 49.Kg2 Qf2 50.Kh1 Qf1 51.Kh2 Be5) 44.h3 e4 45.Rc2 (45.Kh2 Be5 46.Kh1 Ra1 47.Ra1 Ba1 48.Kh2 e3 49.h4 e2 50.h5 e1Q 51.hg6 Kg6 52.g3 Qf1 53.g4 Be5) 45...e3 46.Re2 (46.Kh2 Be5 47.g3 Rf2 48.Rf2 ef2 49.Kg2 Bd4 50.h4 Ra1 51.Kf3 f1Q 52.Ke4 Qf5 53.Kd4 Ra3 54.g4 Qd3) 46...Bd4 (46...Ra1 47.Kh2 Be5 48.g3 Rf2 49.Rf2 ef2 50.h4 f1Q 51.h5 Ra2) 47.Re3 (47.Re1 Ra1 48.Ra1 e2 49.Kh2 Ba1 50.h4 e1Q 51.Kh3 Be5 52.g3 Qg3) 47...Be3 48.Kh2 Rf2 (48...Bf4 49.g3 Ra2 50.Kg1 Be3 51.Kh1 Rf1) 49.Kg3 Rg2! 50.Kg2 Ra3 51.Kg3 Bg5 (51...Bd2 52.Kh2 Bf4 53.Kg2 Rg3 54.Kh1 Rh3 55.Kg2 Rg3 56.Kf1 Rf3 57.Ke2 Ra3 58.Kd1 Ra2 59.Ke1 b5 60.Kd1 b4 61.Ke1 Rh2 62.Kd1 b3 63.Ke1 b2 64.Kd1 b1Q) 52.Kg2-+ Ra4 53.Kf1 (53.h4 Bh4 54.Kg1 b5 55.Kg2 Rf4 56.Kg1 b4 57.Kg2 b3 58.Kg1 Rf2 59.Kh1 b2 60.Kg1 b1Q) 53...Rh4 54.Ke2 (54.Ke1 Rh3 55.Ke2 b5 56.Kf2 b4 57.Ke2 b3 58.Kf2 b2 59.Kg2 Rc3 60.Kf2 b1Q 61.Kg2 Qb2 62.Kf1 Rc1) 54...Rh3 55.Kd1 Rh4 56.Kc2 (56.Ke1 Rf4 57.Ke2 h5 58.Ke3 h4 59.Ke2 h3 60.Ke1 h2 61.Kd1 Rf2 62.Ke1 Bh4 63.Kd1 h1Q) 56...Rf4 57.Kd1 (57.Kd2 h5 58.Kd3 h4 59.Ke2 h3 60.Ke1 h2 61.Ke2 h1Q 62.Kd3 Qd1 63.Ke3 Qf1 64.Kd2 Rc4) 57...h5 58.Ke2 (58.Kd2 h4 59.Kc2 h3 60.Kd3 h2 61.Kc2 h1Q 62.Kc3 Qh3 63.Kc2 Rf2 64.Kb1 Qf1) 58...h4 59.Kd1 (59.Kd2 h3 60.Kc2 Rf3 61.Kd1 h2 62.Ke2 Ra3 63.Kf2 Ra2 64.Kf3 h1Q 65.Kg4 Qg2) 59...h3 60.Ke2 (60.Kd2 h2 61.Kc3 h1Q 62.Kb3 Qd1 63.Ka2 Ra4 64.Kb2 Bf6) 60...h2 61.Ke1 (61.Kd3 h1Q 62.Kc2 Rf3 63.Kb2 Qc1 64.Ka2 Ra3) 61...h1Q 62.Ke2 (62.Kd2 Rf3 63.Kc2 Qc1) 62...Qh3 (62...Qf1 63.Kd2 Rc4) 63.Kd1 (63.Ke1 Qg2 64.Kd1 Rf1) 63...Qg3 (63...Rf2 64.Ke1 Qf1) 64.Ke2 (64.Kc2 Rf2 65.Kb1 Qg1) 64...Qg2 (64...Rf2 65.Kd1 Qg1) 65.Kd1 (65.Kd3 Rb4 66.Kc3 Qd2) 65…Rf1 0-1. TimC (2190) - abena_abeni (2360), Rated Bullet game, lichess.org, 2015.

4.Nc3 Be6 5.e3 a6 6.Nf3 g6 7.Be2 Bg7 8.d4 Nh6 9.d5 Bg4 10.h3 Bf3 11.Bf3 Nd7 12.Rc1 0-0 13.h4 f5 14.g3 e4 15.Be2 b6 16.Qc2 Qe7 17.Nb1 Bb2= 18.Qb2 Ne5 19.Nd2 Nhg4 20.Nb3 Qg7 21.Qc2 h5 22.Nd4+= Rfc8 23.Ne6 Qe7 24.c5 dc5 25.bc5+= b5 26.Nf4 Kh7 27.0-0 Rd8 28.Kg2 Kh6 29.Rfd1+/- Nf6 30.Qb2 Neg4 31.Qa3 Qe5 32.d6 c6 33.Qb3 Rd7 34.Ne6 Nd5 35.Nd4+- Rc8 36.Bg4 hg4 37.Nc6! (37.Nc6 Rc6 38.Qd5 Qd5 39.Rd5+-) 1–0. Ranby,Hans – Pettersson,Thore, corr SSKK 2–745, 1990.

4.Nc3 Ne7 5.e4 Be6 6.Nf3 Nd7 7.Nd5 c6 8.Nc3 g6 9.d4 Bg7 10.d5 cd5 11.Nd5 Nd5 12.cd5 Bf7 13.Bd3 0-0 14.0-0 Rc8 15.Rc1 Qb6 16.Qb3 Bh6 17.Rc3 a6 18.Bc1 Bc1 19.Rfc1 Rc3 20.Qc3 Be8 21.a3 Qc7?? (better 21...a5+/-) 22.Qc7+- 1-0. mahen (2140) - Smalichess (2110), Rated Blitz game, lichess.org, 2016.

4.e3 a5 5.b5 b6 6.d4+= ed4 7.Bd3 de3= 8.Qh5 Ke7 9.Nc3 Bb7 10.Nge2 ef2 11.Kf2 Nd7 12.Nf4+/- Ne5?? 13.Ncd5 Bd5 14.Nd5 Kd7 15.Bf5# 1–0. pcmvr (2775) – dennism (2100), net–chess.com, 2008.

4.e3 a6 5.a3 b5 (better is 5...a5!?=) 6.cb5+/- ab5 7.Bb5 Bd7 8.Bd7 Qd7 9.Nf3 c5 10.bc5 dc5 11.0-0 Nc6 12.Nc3 c4 13.a4 Nge7 14.Ba3 Nf5 15.Bf8 Rf8 16.Nb5 Rf7 (better is 16...e4!? 17.Ne1 Kd8+/-) 17.Qc2+- e4? (better is 17...Qd3 18.Qd3 cd3+-) 18.Qe4 Nfe7 19.Qc4 Kf8 20.d4 Rc8 21.Qb3 Na5 22.Qb4 Nac6 23.Qd6 Qd6 (23...Qg4 24.Qa3+-) 24.Nd6 Kg8 (24...Na5 25.Nc8 Nc8 26.Rfb1+-) 25.Nc8 Nc8 26.Rfc1 Rc7 (26...N8a7 27.e4+-) 27.d5 Nb4 (27...N8e7 28.dc6 Rc6 29.Rc6 Nc6 30.a5+-) 28.Rc7 (28.Rc7 Nd5 29.Rc8 Kf7 30.Rb1+-) 1–0. Fournier,Frederic (1785) – barrabaas, Active (7/0), 2006.

4.e3 b6 5.d4 e4 6.Qh5+/- g6 7.Qd5 c6 8.Qe4 Ne7 9.Nc3 Bf5 10.Qh4 g5 11.Qh5 Bg6 12.Qf3 Bg7 13.Rd1 Qd7 14.d5 g4 15.Qg3 cd5 16.Nd5 Nd5 17.Rd5 Bf8 18.Bf6 Rg8 19.Bc3 Nc6 20.b5 Ne7 21.Rd6 Qf5 22.Bd3 Qc5 23.Qf4 Bd3 24.Rd3 Qa3 25.Ne2 Qa2 26.Ng3 Qb1 27.Rd1 Qc2 28.Ne4 Rd8 29.Nf6 Kf7 30.Nh7 Ke8 31.Nf6 Kf7 32.Ng8 Kg8 33.Qg4 Kf7 34.Rd8 Qc3 35.Ke2 Qc4 36.Qc4 (36.Qc4 Kg6 37.Rf8 Nd5 38.Qg4 Kh7 39.Qh5 Kg7 40.Rf7 Kg8 41.Qh7#) 1–0. pierre – chess_king_in_the_ring, chesspark.com, 2008.

4.e3 Nc6 5.b5 Na5 (5...Nb8 6.d4=) 6.Nf3 Be6 7.d3 (7.Qa4 b6+=) 7...b6 (7...a6 8.Be2=) 8.Nbd2 d5 9.Be2 Bd6 (9...a6 10.cd5 Qd5 11.ba6+=) 10.0-0 Ne7 11.cd5 Nd5 (11...Bd5 12.e4 Bf7 13.d4 ed4 14.Nd4+=) 12.Nc4 (12.d4!?+/-) 12...Nc4= 13.dc4 Nb4?? (better is 13...Ne7=) 14.a3+- Qe7 (14...Na6 15.ba6 0-0 16.Qc2+-) 15.ab4 Bb4 16.Qb3 0-0 17.Ra4 Ba5 (17...a5 18.ba6 Ba5+-) 18.Ba3 Qf7 19.Bf8 Rf8 20.Rd1 Qe7 21.Ra2 (21.Qc2 Rc8+-) 21...Qf7 22.Qc2 g6 23.Nd2 Rd8 24.Rb2 Bf5 25.e4 Rd2 26.Rd2 Bd2 27.Qd2 Be4 28.Qd8 Kg7 29.Rd2 Bf5 30.Ra2 h5 (30...c5 31.Qb8 a5 32.ba6+-) 31.Ra7 Qe6 (31...Qf8 32.Qc7 Kh6 33.Qh7 Kg5+-) 32.Rc7 Kh6 33.Qh8 (33.h4 Qc8 34.Rc8 Kg7 35.Qe7 Kh6 36.Rh8) 33...Kg5+- 34.Bh5! Qd6 (34...gh5 35.Rc6 Combination) 35.h4 Kf4 36.Qh6 (36.Qh6 g5 37.Rf7+-) 1–0. Ladeira,Paulo – Foletta,Ian, IECC, 2013.

4.e3 Nh6 5.d4 c6 6.de5 de5 7.Qd8 Kd8 8.a3 Nf5 9.Nf3 g6 (9...c5 10.Bc3+=) 10.Bd3 (10.g4 Ng7 11.g5 Be7+/-) 10...Bd6 (10...Be6 11.e4 Ng7 12.Nc3+=) 11.Bf5 (better is 11.0-0!?+/-) 11...gf5 12.Nc3 e4 (12...Rg8!? 13.Rd1 Kc7=) 13.Nd4 (13.Ne4 fe4 14.Bf6 Ke8 15.Bh8 ef3 16.gf3 Be6+/-) 13...Be7 14.c5 Nd7?? (better is 14...b6 15.0-0-0 Kc7 16.Ndb5 Kb7 17.Nd6 Kc7+=) 15.Nf5 (better is 15.Ne6 Ke8 16.Nc7 Kf7 17.Na8+-) 15...Ne5 (better is 15...Nc5!? 16.bc5 Bf5 17.Rd1 Kc7=) 16.Ne7+= Ke7 17.Rd1 (17.0-0!? Nd3 18.Rab1+/-) 17...Nd3= 18.Rd3 ed3 19.Kd2 Rd8 (19...Rg8 20.Ne4 Rg4=) 20.Rd1 (20.Ne4!? Rf8 21.Nd6+/-) 20...Bg4 (20...Bf5 21.f3+=) 21.f3= Bf5 22.e4 (22.g4 Bg6=) 22...Bg6 (22...Be6 23.Re1+=) 23.Nb1 (23.Ke3 Bf7 24.Rd3 Rd3 25.Kd3 Rd8 26.Ke2 Bc4 27.Ke1 Rd3+=) 23...f5 (better is 23...Bf7!?+=) 24.Ke3+= fe4 25.fe4 Bh5 26.Rd3 Rd3 27.Kd3 Rd8 28.Ke3 Rd1 29.Nc3 Rg1 30.Kf2 Rh1 31.h3 Bg6 32.a4 Rh2?? (better is 32...h5+=) 33.Kg1+- 1–0. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

4.e4 Nh6 5.Nc3 Ng4 6.Be2+= b6?? 7.Bg4+- Bg4 8.Qg4 h6 9.Qg6 Ke7 10.Nf3 Nc6 11.Nd5 Ke6 12.Qh5 Nb4 13.Nb4 d5 14.cd5 Kd6 15.Nc6 Qd7 16.Ba3# 1–0. mtr – oppo01, internet, 2010.

4.f4 Nd7 (better 4...ef4!? 5.Qb3 Ne7–/+) 5.e3= g6 (5...a5 6.b5=) 6.d4 (6.Nc3 Ne7=) 6...Bg7 (6...d5 7.de5 (worse 7.cd5 ef4 8.e4 f5=+) 7...Bb4 8.Nc3 fe5 9.cd5 ef4 10.Qd4 Bc3 11.Bc3+=) 7.a4 (7.Nf3 e4 8.Nfd2 f5=) 7...Ne7 8.Nf3 0-0 (8...e4 9.Nfd2=) 9.Bd3 a5 (9...c5 10.bc5 dc5 11.0-0=) 10.b5 b6 (10...ef4 11.ef4 Nb6 12.0-0+=) 11.Qc2 (11.0-0 Bb7 12.Qc2 Bf3 13.Rf3 f5+=) 11...Bb7 (11...Bh6 12.0-0+=) 12.0-0 Qe8 (12...Bf3 13.Rf3 f5 14.Be2+=) 13.Nbd2 ef4 (13...Bh6 14.g3+=) 14.ef4+- Qf7 (14...Bh6 15.f5+-) 15.Ne4 (15.f5 Bh6+-) 15...Nf5 (15...h6 16.c5 bc5 17.dc5+-) 16.Rae1+- h5? (16...Rae8!?+-) 17.d5 (17.Ng3 Ne7 18.f5 g5 19.Nh5 Rae8 20.Ng7 Kg7+-) 17...Nc5 (17...Rae8!?+-) 18.Nc5 bc5 (18...dc5 19.Bf5 gf5 20.Nh4+-) 19.Bf5 gf5 20.Qf5 (20.Bc3 Qd7+-) 20...Bc8 21.Qe4 (21.Qd3 Qd7+-) 21...f5 (21...Bg4 22.Qd3+-) 22.Qc2 Bd7 (22...Bf6 23.Ng5 Bg5 24.fg5+-) 23.Ng5 Qg6 24.Re7 Bb2 25.Qb2 Rad8 26.b6 (better 26.Rh7 Rf6 27.Qc3+-) 26...cb6 27.Ne6 (27.Nh7 Rf7 28.Rf7 Kf7 29.Qb6 Re8 30.Ng5 Kg8 31.Qa5 Qf6+-) 27...Be6 28.Re6 (worse 28.de6 Rde8 29.Rb7 Re6 30.Rb6 Re4+=) 28...Qg7 29.Rb1 Rf7 (29...Qb2 30.Rb2 Rfe8 31.Rb6 Re6 32.de6 Kf8+-) 30.Qg7 Kg7 31.Rb6 Rfd7 (31...Rf6 32.Re7 Rf7 33.Re3+-) 32.Kf2 1–0. jaddwarrior – kingscrusher (1820), ChessWorld.net, 2014.

5.Nc3 Be6 6.d4 ed4 7.ed4 d5 8.c5 a6 9.a4 Ng6 10.Bd3 Bf7 11.Nge2+= Be7 12.Qb3 0-0 13.h4 Re8 14.0-0-0 Nc6 15.Na2 Qd7 16.Rdg1 Bd8 17.g4 Nce7 18.Bc3 b6 19.Qc2 b5 20.a5+= c6 21.g5 f5 22.h5+/- Nf8 23.Nf4 Bc7 24.Bd2 Bf4 25.Bf4+/- Be6 26.Nc3 Kf7 27.Ne2 g6 28.Be5 gh5 29.Rh5 Neg6 30.Bf6 Kg8 31.f4 Ra7 32.Qd2 Bf7 33.Rh6 Be6 34.Rgh1 Rc7 35.Ng3 Rb7 36.Be2 Ra7 37.Bh5 Rb7? 38.Bg6 Ng6 39.Rg6! hg6 40.Rh8 Kf7 41.Rh7 Kf8 42.Rd7 Bd7 43.Qh2 Kf7 44.Qh7 Ke6 45.Qg6 (45.Qg6 Bc8 46.Qe8 Re7 47.Qe7#) 1–0. Nielsen,Jorgen Axel – Larsen,G, Denmark, 1972.

5.d4 Nd7 6.g3 g6 7.Bg2 Bg7 8.Ne2 0-0 9.0-0 Rb8 10.Qa4 Nb6 11.Qc2 Be6 12.Nd2 c6 13.a4 Nd7 14.Rfd1 d5 15.c5 Bg4= 16.f3 Be6 17.e4 f5 18.Rab1 fe4 19.fe4 Bg4 20.Re1 Be2 21.Re2 ed4 22.Nf3 d3 23.Qd3 Bb2 24.Rbb2 de4 25.Re4 Nd5 26.Rbe2 Qf6 27.Re1 Qc3 (27...Rbd8 28.Rf1+=) ½–½. Nemec,Zdenek – Nika,Ondrej, CSLA, 1982.

5.d4 Bf5 6.Bd3 =.

5.Nf3 e4 6.Nd4 =.

5.Nf3 Ng6 6.d4 Be7 7.Nc3 c6 8.Qb3 Be6 9.b5 Nd7= 10.Be2 0-0 11.a4 c5 12.a5 cd4= 13.ed4 Nf4 14.Bf1 Qe8 15.Nd5 Bd5=+ 16.cd5 Qf7 17.g3 Ng6 18.Bg2 e4 19.Nd2 f5 20.0-0 Nf6 21.f3= Qd5? 22.Qd5+/- Nd5 23.fe4 Ne3 24.Rfc1?? Ng2=+ 25.Kg2 Bg5 26.Rc2 Bd2 27.Rd2 fe4 28.d5 Rac8 29.Ba3 Rf6 30.Re2 Rc4 31.Rae1 Ra4 32.Bb2 Rf7 33.Re4 Ra5 34.Rb4 Re7 35.Rc1–/+ Re2 36.Kf3=+ Rh2 37.Rc8+= Kf7 38.Rc7 Ke8 39.Rb7 Ne5 40.Be5+/- de5 41.Rg7 Ra3 42.Ke4 Re2 43.Kf5+- Rf3?! 44.Ke6 Rh2 45.Rc4 Rh6 46.Ke5 Rh5 47.Ke4 Kf8 48.Ra7 Rf7 49.Rf7 Kf7 50.b6 Rh1 51.Rb4 Re1 52.Kd4 Re8 53.b7 Rb8 54.Kc5 Ke7 55.Kc6 Kd8 56.d6 h5 57.Re4 h4 58.d7 hg3 59.Re8# 1–0. Garcia Corada,Pedro – Moran Canseco,Jose Manuel, Valladolid CC Social, 1988.

5.Nc3 Nc6 6.b5 Nce7 7.e4 Bg6 8.Nf3 Bh5 9.Be2+- Bf3 10.Bf3 f5 11.ef5 Nf5 12.Bb7 Rb8 13.Bc6 Ke7 14.Qf3 Nd4 15.Nd5 Ke6 16.Bd4 (16.Bd4 Nf6 17.Ba7+-) 1–0. pierre – why_I, internet, 2009.

5.Nf3 Nd7 (5...Nc6 6.b5 Nce7 7.Be2=) 6.Nc3 Ne7 (6...Nh6 7.d4=) 7.d4+= ed4 (7...Nb6 8.Be2+=) 8.Nd4+- Bg6?? (better 8...Ne5+-) 9.Ne6+- Qc8 10.Nb5 (10.Nf8?! Nf8 11.Be2 a5+=) 10...c6 (10...Nc6 11.Nec7 Kd8 12.Na8 Nb4+-) 11.Nd6 1–0. michaelbuss (2770) – Craig485586, ChessWorld.net, 2011.

5.d4 Bg7 6.Nc3 Ne7 7.Nf3 0-0 8.Be2 Nbc6 9.b5 Nb8 10.0-0 Nd7 11.a4 f5 12.Qb3 h6 13.c5 Kh7 14.cd6 cd6 15.de5 de5 16.Rfd1 Qe8 17.Ba3 Rg8? (better 17...e4!? 18.Nd4 Be5+/-) 18.Bc4+- Rh8 (18...Rf8 19.Nd5 Nd5 20.Bf8 Bf8 21.Bd5 e4+-) 19.Rac1?? (better 19.Bf7 Qd8 20.Nh4+-) 19...e4+/- 20.Nd4 Ne5 21.Be2 g5 (21...Bd7 22.Bd6+/-) 22.Nd5 (22.a5!? Rg8+-) 22...Nd5+/- 23.Qd5 Bd7? (better 23...Qf7 24.Qd6 Qg6+/-) 24.Rc7+- Rd8 25.Qb7 (25.Rb7?! Bc8 26.Rg7 Kg7+-) 25...f4 (25...Rg8+-) 26.Qe4 (better 26.Nc6 Qe6 27.Nd8 Rd8 28.Qe4 Qg6 29.Qg6 Kg6 30.Bb2+-) 26...Kg8 (26...Ng6 27.Qe8 Rhe8 28.Nb3 fe3 29.Rcd7+-) 27.Bc4 (27.Nc6!? Rh7 28.Nd8 Bf6+-) 27...Nf7?? (27...Nc4 28.Qd5 Kh7 29.Qc4 fe3 30.Ra7 ef2 31.Kf2 Qg6+-) 28.Qg6 Rh7 29.Nf5 Bf5 30.Rd8 Qd8 (30...Bg6 31.Re8 Bf8 32.Rf8 Kg7 33.Rg8 Kf6 34.Rc6 Nd6 35.Bb2 Kf5 36.f3 Re7 37.Rc5 Re5 38.Re5 Kf6 39.Rc5 Ke7 40.Rc7) 31.Qf7 Kh8 32.Bb3 (32.Re7 Qd1 33.Bf1 Qf1 34.Kf1 Bd3 35.Kg1 Bb5 36.Re8 Be8 37.Qe8 Bf8 38.Qf8) 32...Bf6? (better 32...fe3 33.Qf5 Qc7+-) 33.Bb2?? (better 33.Qf8 Qf8 34.Rh7 (34.Bf8?? Rc7 35.Kf1 Rc3-+) 34...Kh7 35.Bf8 fe3 36.fe3+-) 33...Rf7-+ (33...Bb2?! 34.Qd5 Qd5 35.Rh7 (35.Bd5?? Rc7 36.Bc6 Re7-+) 35...Bh7 36.Bd5-+) 34.Rf7 Bb2 35.Rf5 Bf6 (better 35...Qd3 36.Rf8 Kg7 37.Rf7 Kg6 38.h4 Qb3 39.Re7-+) 36.Rd5 (36.g4 Be7 37.ef4 Qd3-+) 36...Qc7 (better 36...Qe7 37.Kf1 fe3-+) 37.h3 (37.Rd3-+) 37...fe3 38.fe3 Be5 (better 38...Qc1 39.Bd1 Qe3 40.Kf1 Be5 41.Re5 Qf4 42.Bf3 Qe5-+) 39.Kf2 1-0. jhonores (2200) - MaungKayas (2200), Rated Blitz game, lichess.org, 2020.

5.Nf3 Bg7 6.d4+= Ne7 7.Be2 0-0 8.Nc3 Kh8 9.0-0 Be6 10.a4 Nd7 11.a5 a6 12.b5 f5 13.de5 Ne5 14.Ne5 Be5 15.Qd2 Kg8 16.f4 Bf6 17.Rfd1 Qe8 18.e4 Qf7 19.Nd5 Bd5 20.ed5+= Kg7 21.Rab1 Ng8 22.Ba3 b6 23.ab6 ab5 24.Rb3 bc4 25.Bc4 c5 26.dc6 Qc4 27.Qd5 Qe2 28.b7 Ne7? 29.Qd3?? Qd3+/- 30.Rdd3 Ra3 31.c7 Bd4 32.Kf1 Rb3 33.Rb3 Ba7 34.b8Q Bb8 35.cb8Q Rb8 36.Rb8 Kf6 37.Ke2 h6 38.Rh8 h5 39.Kd3 Nd5 40.g3 Ke6 41.Kd4 Nf6 42.Ra8 Ng4 43.Ra2 Nf6 44.Re2 Ne4 45.Re3 Kd7 46.Kd5 Nf6 47.Kc4 Ne4 48.Kb5 Nf6 49.Ra3 Ng4 50.Ra2 Ke6 51.Kc6 Nf6 52.Ra8 Ne4 53.Re8 Kf7 54.Rd8 Ke7 55.Rd7 Kf6 56.Kd5+/- g5 57.h4 gf4 58.gf4 Nc3 59.Kd4 Ne4 60.Rh7 Kg6 61.Rc7 Nd2 62.Rc3 Kf6+/- 63.Kd5 Ne4 64.Rc7 Nd2 65.Rc6 Nf3? 66.Rd6 Kg7 67.Ra6 Nh4 68.Ke5 Kf7 69.Rh6 1–0. Sokolski,Alexei – Neiderwitz, Vilnius, 1955.

4.Nc3 c6 5.d4 (5.h3 Bf5 6.e4 Bg6 7.a3 Nf6 8.d4 Nbd7=) 5...Nd7 (5...Qb6 6.Qb3 Na6 7.b5 ed4 8.ba6 dc3=) 6.g3 (6.h3 Bh5= 7.a3 Qh4 8.Nb1 Qf6=) 6...Qg5 (6...Nb6!? 7.Qd3 Ne7=+ 8.e4 ed4=) 7.Bg2= Be6 (7...Ngf6 8.d5 (8.b5 Rc8 9.Nf3 Bf3 10.Bf3=) 8...cd5+=) 8.d5+= cd5 9.Nf3 Qg4 (9...Qd8 10.cd5 Bf5 11.e4+=) 10.cd5 (10.Nd5 Rc8 11.Nd2 b5+=) 10...Bf5+= 11.a3 Ngf6 (11...Be7 12.Rc1 Nb6 13.Nb5+/-) 12.h3+/- Qc4 13.Rc1 Qc8? (13...h6 14.Qa4 a6 15.Nh4+=) 14.0-0 ( 14.Nh4 Nb6 15.Nb5+-) 14...Qd8 15.Re1 (15.Nh4 Bg6+/-) 15...Be7 (15...Nb6 16.e4 Bd7 17.Qd3+=) 16.Nh4+/- Bg6 17.e4 (17.Nb5 Kf8+/-) 17...Nb6 (17...0-0 18.Ng6 fg6 19.Nb5+/-) 18.Ng6 hg6 19.Nb5 0-0 20.Rc7?? ( 20.Qd3+/-) 20...a6–/+ 21.Rb7 ab5 22.Bf1 Nfd7 23.Bb5=+ Qc8 24.Bc6= Ra6? 25.Qd3+/- Ra8 26.Qb5 Rd8 27.h4 Rb8 28.Ra7 f5? 29.Rc1+- Na8 30.Bd7 Qc1 31.Bc1 Rb5 32.Bb5 Kf8 33.f3 Rc8 34.Bc6 Nb6 35.a4 Nc4 36.b5 Bd8 37.Kf2 Bb6–/+ 38.Ke2 Ba7 39.Bd2 Nd2-+ 40.Kd2 Bb6 41.Kc3 Rc7 42.Kb4 Ra7 43.Kb3 Kf7 44.Kb4 Kf6 45.Be8 g5 46.hg5 Kg5 47.ef5 Kf5 48.Bh5 e4 49.Bg4 Ke5 50.fe4 Ke4 51.Be6 Kd4 52.g4 Ba5 53.Kb3 g5 54.Bg8 Kc5 55.Be6 Rh7 56.Ka3 Rh3 57.Kb2 Kb4 58.b6 Ka4 59.Bd7 Kb4 60.b7 Bc7 (60...Bc7 61.Kc2 Kc5-+; 60...Rb3!? 61.Kc2 Kc4 62.Bc8-+) 0–1. inspector (2330) – grahamtrue (2070), net–chess.com, 2008.

4.Nc3 Ne7 5.Nf3 Bf3 6.ef3 Nd7 7.d3 Ng6 8.g3 Be7 9.Bg2 Nf6 10.f4 ef4 11.Bb7+/- Rb8 12.Qa4 Nd7 13.Qa7 0-0 14.a4 fg3 15.hg3 Bf6 16.a5 Re8 17.Kd1 Nge5 18.Kc2 Ng4 19.Be4 g6 20.f3 Nf2?? 21.Qf2 (21…Rb4 22.Qh2+-) 1–0. Bonetti,Shane – appaloosa, ICC, 2002.

4.Nf3 Qd7 5.e3 e4 6.h3 Bh5 7.g4 Bg6 8.Nd4 d5 9.b5 c6 10.bc6 Nc6 11.Nc6 bc6 (< 11...Qc6 12.cd5 Qd5 13.Nc3+=) 12.cd5 Qd5 13.Bg2 Qd7 14.Nc3 Qe6 15.Qa4 Rb8 16.Rb1 Rb7 17.0-0 (17.Ne4?! Rb4 18.Qa7 A) 18...Re4?? 19.Bg7 Re3 20.de3 (20.Qe3?! Bg7 21.Bc6 Ke7+-) 20...Bb1 21.Qb8 Kd7 22.Qf8+-; B) 18...Be4 19.Qa8 Ke7+=; 17.Be4 Be4 18.Ne4 Rb4–/+) 17...Nf6 18.Ba1 Rb1 19.Rb1 Bd6 20.Qc6 Ke7 21.Qb7 Nd7 22.Nd5 (22.Ne4 Rb8 23.Nd6 Qd6 24.Qb8 Nb8 25.Rb7 Kf8–/+; 22.Qa7?! Rc8+-) 22...Kf8 23.Qc8 Qe8 24.Qe8 Ke8 25.Rc1 Kd8 26.Nf4 (26.Bg7!? Re8+-) 26...Ne5 27.Ng6 hg6 28.Be5 Be5 29.Rb1 f5 30.Rb7 Kc8 31.Ra7 Rd8 32.Ra8 Bb8 33.Ra6 Bd6 34.Bf1 Kb7 35.Ra4 ( 35.a4!?+-) 35...Bc5 36.Rc4 Kb6 37.Ra4 ( 37.Rc2 Bb4 38.Bc4+/-) 37...Kc6?? ( 37...Kb7=) 38.Ra6+- Bb6 39.a4 Rd5 40.Bb5 Kb7 41.Bf1?? Kc7?? 42.Ra8 Rd2 43.Rg8 Rd7 44.Bb5 Re7 45.Kf1 Kd6 46.Rc8 Bc7 47.Ke2 Kd5 48.gf5 gf5 49.Re8 Rf7 50.f3 Bb6 51.fe4 fe4 52.Rc8 Rf3 53.Bc6 Kd6 54.Bb5 Re3 55.Kd2 Ke5 56.Rc3 Rc3 57.Kc3 Be3 58.a5 g5 59.a6 Ke6 60.Kc4 Ke5 61.Kc3 Kf4 (62.Bc6 Ba7=). valpa – peta, playchess.de, 2003.

4.Nf3 e4 5.e3?? (5.Nd4 Nf6=) 5...Nf6?? (better 5...ef3!? 6.gf3 Be6 7.d4-+) 6.Be2? (better 6.h3 Bd7 7.Nd4=+) 6...ef3-+ 7.Bf3 h5 8.Bg4 Nbd7?? (better 8...Ng4 9.0-0 d5-+) 9.Bd7 Qd7 10.h3 (10.Bf6 gf6 11.Nc3 0-0-0+-) 10...h4 (10...Qc6!? 11.Qf3 Qf3 12.gf3 Rh6+-) 11.Bf6+- Be7?? (better 11...gf6 12.Nc3 0-0-0+-) 12.Be7 Qe7 13.Nc3 0-0-0 14.Qg4 f5 (14...Qe6 15.Qe6 fe6 16.d4+-) 15.Qf5 Kb8 16.Nd5 (16.0-0 Rdf8 17.Qg4 Qf7+-) 16...Qd7 (16...Qe5 17.Qe5 de5 18.b5+-) 17.Qd7 Rd7 18.0-0 g5 (18...c6 19.Nf4+-) 19.Nf6 Rf7 20.Ng4 (20.Ne4 Rf5+-) 20...Kc8 21.f4 gf4 22.ef4 (22.Rf4 Rf4 23.ef4 a5+-) 22...Kd7 (22...Rhf8 23.Rf3 Rf4 24.Raf1 Rf3 25.Rf3+-) 23.Rf3 (23.Kh2 Re8 24.g3 Re2 25.Rf2 Rf2 26.Nf2 c5+-) 23...a6 (23...a5 24.ba5 Rhf8 25.Raf1+-) 24.Rd3 (24.Kf2 b5+-) 24...Rf4 (24...Kd8 25.Rf1+-) 25.Ne5 Kc8 26.Ng6 Rc4 (26...Rhf8 27.Nf8 Rf8 28.Rf1+-) 27.Nh8 Rb4 28.Re1 b5 29.Re8 (29.Ng6 Ra4+-) 29...Kb7 (29...Kd7 30.Rf8+-) 30.Re7 Rb1 (30...Ra4 31.a3 Kb6 32.Ng6+-) 31.Kh2 Kb6 32.Nf7 (32.Ng6 Rb4+-) 32...Rb2 33.Re6 (better 33.a3 a5+-) 33...Ra2 34.Re8 Kb7 (34...Ra4 35.g3+-) 35.Re7 Kb6 36.g3 hg3 37.Kg3 b4 38.Rb3 (better 38.h4 a5 39.h5 Ra1+-) 38...Rd2 (38...a5 39.d3+-) 39.Rb4 Ka5 (39...Kc5 40.Rb1 c6 41.Rc1 Kd5 42.Ra1+-) 40.Ree4 (better 40.Rb7 Rd3 41.Kg4 Rd4 42.Kf5 Rd5 43.Kf6+-) 40...Ra2 (40...Rd3 41.Kf4 c5+-) 41.Nd8 c5 (41...Ra3 42.Kf4 Rf3 43.Kf3 c5 44.Nc6) 42.Nc6 1–0. MARYMARY – cristian_b, ChessWorld.net, 2015.

4.h3 Bh5 5.g4 Bg6 6.Bg2 Nc6 (6...c6 7.Nf3=) 7.a3 (7.b5!? Nce7 8.Bb7+/-) 7...Rb8 8.e3 a6 9.Nf3 Be7 10.0-0 (10.d3 h5=) 10...Nh6 (10...Bd3!? 11.Re1 Bf6+=) 11.d3 (11.d4!? ed4 12.ed4+=) 11...0-0= 12.e4 Qd7? (12...Kh8 13.Bc1=) 13.Nbd2 (13.g5 Nf5 14.ef5 Qf5 15.Nc3+/-) 13...Nd4? (better is 13...f6=) 14.Nd4 ed4 15.Bd4 c5 16.Bc3 (16.Be3 f6+-) 16...b6 (16...b5 17.g5 Bg5 18.f4+-) 17.Qc2 Bh4? (better is 17...f6+/-) 18.Nf3+- Be7 19.Rab1 f6 20.b5 ab5 21.Rb5 Nf7 22.Rfb1 Bd8 23.a4 Ne5 24.Ne5 fe5 25.a5 Bh4 26.f3 Qf7 27.Rb6 Rb6 28.Rb6 Qf4 29.Bd2 Qg3 30.Qd1 h5 31.a6 hg4= 32.hg4 Ra8?? 33.Rd6?? Kf7?? 34.Be3 Be7 35.Rc6 Rh8 36.Qf1 Qh2 37.Kf2 Bh4 38.Ke2 1–0. Fournier,Frederic – bienmachin (1650), Active, 2009.

5.Nf3 Qd7 6.e3= e4 (7.h3 Bh5=). algernon (2165) – grahamtrue (2100), net–chess.com, 2008.

5.Nf3=+ Be7 6.e3 a5 7.b5 Nbd7 8.h3 Bh5 =.

5.d4 e4 6.Nfd2 Nf6 7.h3 Bh5 8.g4 Bg6 9.Bg2 0-0 (9...d5 10.g5 Nh5 11.cd5=+) 10.Nc3 Nc6 11.g5 Nd7 (11...Nh5 A) < 12.Nce4 Nf4 13.Bf3 A1) < 13...Bg5 14.b5 (< 14.Ng5 Qg5 15.b5 Nb4=+) 14...Nb4 15.Bc3+/-; A2) 13...Nb4=+; B) 12.Nde4?! Nf4 13.Bf3 B1) < 13...Bg5 14.e3+/- (14.Ng5?! Qg5 15.b5 Nb4=); B2) 13...Nb4=; C) 12.b5 e3 13.bc6 (< 13.fe3 Nb4 14.Nde4 Bg5=+) 13...ed2 14.Qd2 Bg5 15.e3 bc6 16.Bc6+=) 12.Nce4+= Nb4 13.Qb3 d5 14.a3 Na6 (14...Be4!? 15.Ne4 dc4 16.Qc4 Nb6=) 15.cd5+/- (15.Qb7?! Qb8 16.Qa6 Qb2=) 15...Rb8 (15...Nb6 16.h4 Nd5 17.h5+/- (17.Qb7?! Nf4 18.Bf3 Rb8 19.Qa6 Rb2+/-)) 16.h4 Nb6 (16...b5!?+/-) 17.Ng3+- Nd5?? ( 17...h5 18.gh6 gh6+-) 18.Qd5 Qe8 19.Qb3 c5 20.h5 c4 21.Nc4 b5 22.Ne5 Bd6 23.hg6 Be5 24.Nf5 Bf4 25.Rh7 Bg5 26.Rg7 Kh8 27.Qh3 (27.Qh3 Bh6 28.Qh6) 1–0. orane3 – bluemooners4, internet, 2006.

5.d4 e4 6.d5 ef3 7.ef3 Bf5 8.g4 Bd7 –/+.

5.d4 Bf6 6.de5+/- de5 7.Qd8 Kd8 8.Nc3 (8.Ne5 Be6 9.Na3 Kc8+/-) 8...e4 ( 8...Nd7!?+=) 9.0-0-0+/- Kc8 (9...Ke8 10.Ne4 Bb2 11.Kb2+/-) 10.Ne4 Bb2 11.Kb2 Bf3 (11...Nh6 12.h3 Bf3 13.ef3+-) 12.gf3 Nc6? ( 12...f5+-) 13.Bh3 Kb8 (13...f5 14.Bf5 Kb8 15.Kc3+-) 14.b5 Ne5 (14...Nge7 15.Rd7 Rf8+-) 15.Rd8 1–0. marre – vmts, internet, 2010.

5.e3 Nf6 6.Be2 e4 7.Nd4 Be2 8.Qe2 0-0 =+.

5.h3 Bf5 6.g4 Be6 7.d4 Bc4 8.de5 de5 =+.

5.d4 e4 6.Nfd2 d5 7.Qa4 c6 8.Nc3 dc4 –/+.

5.h3 Bf5 6.e3 h5 (6...Nc6 7.a3=+) 7.Be2 (7.d4 e4 8.Qc2 Nc6=) 7...Be7 (7...Nc6 8.b5 Nb4 9.d3+=) 8.Nh4 (8.d4=) 8...Bg6 ( 8...Be6!?=) 9.Ng6+/- fg6 10.Qc2 Kf7 11.Bd3 Rh6 12.Nc3 c6 13.Ne4 (13.0-0+/-) 13...Nbd7 ( 13...Na6!? 14.Qb3 Ke8+=) 14.Ng5+- Kg8 15.Bg6 e4? (15...Qb6 16.Nf7 Rg6 17.Qg6 Qb4 18.Nh6 Kh8 19.Nf5+/-) 16.Ne6 (16.Nf7 Qb6 17.Bd4 Rg6 18.Bb6 ab6+/-) 16...Qc8 (16...Qb6 17.Be4 Ne4 18.Qe4+-) 17.Be4 Ne4 18.Qe4 Nf6 19.Bf6 Rf6 20.Nf4 Qf5 21.Qe7 g5 22.Nh5 Qf2 23.Kd1 Rf7 24.Qg5 Kf8 25.Qh6 Ke8 26.Ng7 Kd7 27.Kc2 Rg8 28.Rhf1! Qf1 29.Rf1 Rf1 30.Nh5 Rg2 31.Nf6 Kc7 32.Qg7 Rg7=+ 33.Ne4?? Rg2 34.a4 Rh1 35.b5 Rh3 36.bc6 bc6 37.Nf6 d5 38.Ne8 Kd7 39.Nf6 Kd6 (40.cd5 cd5-+) 0–1. TIROLOCO – port, Live Game Caissa's Web, 2004.

4.e3 a5 5.Nf3 Qf6 6.b5 c6 7.Nc3 Bg4 8.Be2 Bf3 9.Bf3+/- d5 10.cd5 cb5 11.Nb5 a4?? 12.Nc7 Kd7 13.Na8 h5 14.Qa4 Kc8 15.Qe8 Qd8 16.Nb6 Kc7 17.Be5 Kb6 18.Qd8 Ka7 19.Bb8 Ka6 20.Be2 b5 21.Qc7 Rh6 22.Qa7# 1–0. MarcosRamos – chassel, internet, 2007.

4.e3 d5 5.Nf3 Qh5 6.Be2 (6.Be5 Bg4 7.Bc7 Na6+/-) 6...dc4 ( 6...e4 7.Ne5 Qg5 8.Qa4 c6 9.cd5 Qg2=) 7.Ne5+/- (7.Bc4?! A) 7...Bb4? 8.Qa4 (8.Ne5?! Qd1 9.Kd1 Nh6=; 8.Be5?! Bf8+/-) 8...Bd7 9.Qb4+-; B) 7...e4 8.Ne5 Qd1 9.Kd1 B1) 9...Bb4 10.Nf7 (10.Bf7?! Ke7=) 10...b5 11.Bb3+- (11.Nh8?! bc4 12.Bg7 Bg4 13.Ke1 Bf8+-); B2) 9...Nh6=) 7...Qg5 8.0-0 (8.h4 Qe7+/- (8...Qg2?? 9.Bf3 Qh1 10.Bh1+-)) 8...Bh3 9.Bf3 c6 10.d4 (10.Nc4 Nf6+/- (10...Bb4? 11.Qb3 a5 12.a3+-)) 10...Be6 (10...cd3 11.b5 Nd7 12.Nd3 cb5 13.Bd4+=) 11.Nd2 (11.b5 Ne7 (11...cb5?? 12.Bb7 Bd6 13.Ba8+-) 12.Nd2 Nd5 (12...cb5 13.Ne4 Qh4 14.g3 Qe4 15.Be4+-) 13.bc6 Nc6 14.Nc6 bc6 15.Nc4 Be7+-) 11...f6 ( 11...Bb4 12.Ndc4 f6+/-) 12.Qe2?? ( 12.Nec4 Qb5 13.Be2+-) 12...fe5-+ 13.Nc4 Bb4 14.Ne5 Ne7 15.Rfd1 b5?? 16.a3?? Bb3?? 17.Rdc1?? Bd6–/+ 18.Bc6 Nec6 19.Nc6? Nc6-+ 20.Rc6 Qd5?? 21.Rac1?? 0-0 22.Qg4? Bc4-+ 23.Qd7?? Rad8 24.Qb7? Rf7 25.Qa6 g5 26.Rc8 Rc8 27.Qc8 Rf8 28.Qg4 h6 29.Rd1 Qf7 (29...Qf7 30.Rd2 Re8-+) 0–1. gtate (1945) – camcnt (1875), net–chess.com, 2003.

4.e3= Nd7 5.Nc3 c6 6.Nf3 Qh5 7.d4+= Be7 8.g4 Qg4 9.Rg1 Qh5 10.Rg7+= ed4 11.ed4 Bf6 12.Rg3+/- Nh6 13.Ne4 Ng4?? 14.Bh3+- Rg8 15.Nfd2 d5 16.Bg4 Qh2 17.Bd7 Kf8 18.Rg8 Kg8 19.Nf6 Kf8 20.Qg4 Ke7 21.Qg5 Kd6 22.Bc8 Rc8 23.Nf3 Qh3 24.Qe5# 1–0. pierre – jamespond, ChessWorld.net, 2005.

4.e3 Qg4 5.f3 (5.Nc3 Nf6=) 5...Qh4 6.g3 Qh5 7.Qa4 (7.Nc3 Nf6=) 7...Bd7=+ 8.b5 a5 (8...Nf6 9.d4=) 9.Nc3 Nf6 10.Bg2 b6 (10...c6 11.f4=) 11.0-0-0 Na6 12.a3 (12.d4 Rd8 13.Nge2 Be7+=) 12...Nc5= 13.Qc2 Bf5 14.e4 Be6 15.d3 (15.Nd5 Nd5 16.cd5 Bd7=) 15...Qg5 (15...Rc8 16.Nd5=) 16.Kb1+= Be7 17.Nge2 (17.f4 Qh5 18.f5 Bc8+-) 17...0-0+= 18.h4 (18.f4 Qh6+=) 18...Qg6 19.g4 White launches an attack 19...h5 (19...h6!?+=) 20.g5+- Nfd7 21.f4 ef4 (21...Bg4!?+-) 22.Nf4 Qh7 23.Ne6 (23.d4 Nb7+-) 23...Ne6 24.Nd5 Bd8 25.Rdf1 Ne5 26.d4 Ng4 27.Rf3 (27.Bf3!?+-) 27...Rc8+- 28.Bh3 (28.Re1 c6 29.bc6 Rc6+-) 28...c6+= 29.bc6 Rc6 30.Nf4 (30.Qd3 Rc4 31.Qc4 Qe4 32.Qd3 Qd5+-) 30...b5 31.Bf1 (better 31.g6!? fg6 32.Ne6 Rf3 33.Qd1 Rh3 34.Rh3+=) 31...Nf4=+ 32.Rf4 Ne3 33.Qc3 (33.Qb3!? Nc4 34.Bc4 bc4 35.Qb5=) 33...Nc4 34.Ba1? (34.Bc4 bc4 (34...Rc4?! 35.Qb3=) 35.Ka2 Bb6–/+) 34...f6 (better 34...d5 35.Bc4 Rc4-+ (35...dc4?! 36.d5 Rc8 37.Rhf1–/+)) 35.Bd3–/+ fg5 36.Rf8 Kf8 37.Rf1 (37.d5 Rc7 38.hg5 Qg6–/+) 37...Ke8-+ 38.e5 (38.Bc4 bc4 39.Qf3 Be7–/+) 38...g6 (38...Qh6 39.Bc4 Rc4 40.Qf3 Qh7 41.Ka2-+) 39.hg5 (39.d5 Rc5 40.e6 Ne5 41.Qc5 dc5 42.Bb5 Nd7+-) 39...de5 (39...b4 40.ab4 ab4 A) 41.Qb4? Rb6 42.Qb6 Nb6-+ (42...Bb6?! 43.Bc4 Qb7 44.Bb5 Ke7 45.ed6 Kd6 46.Rf6 Ke7 47.Bc6-+); B) 41.Qe1-+) 40.de5 (40.Bc4 bc4 41.Qf3 Qb7 42.Bb2 Be7 43.Qf7 Kd8 44.de5 Qd7-+) 40...Bg5-+ 41.Bc4 Rc4?? (41...bc4 42.Qf3 Qb7 43.Ka2-+) 42.Qa5? (42.Qd3 Be7 43.e6 Ba3 44.Rd1+-) 42...Qb7-+ 43.Bb2 Ra4 (43...h4 44.Qe1-+) 44.Qc3 Rc4?? (44...Qe4 45.Ka2 Rc4 46.Qb3–/+) 45.Qg3?? (45.Qa5 h4 46.Ka1-+) 45...Qe4-+ 46.Ka1 Qg4 (better 46...Bf4!? 47.Qb3 b4 48.Qa4 Ke7 49.Qa7 Ke6–/+) 47.Qb3=+ Qd7 48.Rd1 Qb7 (48...Qc6 49.Rd6 Qh1 50.Ka2=) 49.Rg1 (better 49.Qg3 Rg4 50.Qb3=) 49...Rg4 (49...Be7 50.Rg6 Qd5–/+) 50.Qg8+- Kd7 51.Rd1 Kc7 52.e6 Qe4 (52...Kc6 53.Rd7 Qd7 54.ed7 Kd7 55.Qg6 Be7 56.Qf5 Kc6 57.Qc8 Kd6 58.Qa6 Kd5 59.Qb5 Bc5+-) 53.Rd7 Kb6 54.Qb8 Kc5 (54...Qb7 55.Qb7 Kc5 56.Qc7) 55.Qd6 Kc4 56.Qb4 1–0. Delboy Smith (1775) – Hookem (1760), ChessWorld.net, 2017.

4.e3 Nh6 5.Be2 Bg4 6.Nf3 Bf3 7.Bf3 e4 8.Be2 Qg5 9.0-0 a6 10.f4 Qe7 11.Nc3 f5 12.Nd5 Qd7 13.Bh5 Nf7 14.d3 ed3 15.Qd3 Nc6 16.a4 Ne7 17.b5 Nd5 18.Qd5 c6 19.Bf7 Qf7 20.Qf7?? Kf7= 21.Rac1 c5 22.Rfd1 Rg8 23.Rd5 g6 24.b6 Re8 25.Kf2 Re4 26.Rc3 Ke6 27.Bc1 Rc4 28.Rd6 Kd6 29.Rc4 Kc6 30.Kf3 Kb6 31.Bd2 Kc6 32.h3 b5 33.ab5 ab5 34.Rc2 h5 35.e4 c4 36.g4 hg4 37.hg4 fg4 38.Kg4 Be7 39.e5 Kd5 40.Bc3 b4 41.Rd2 Kc5 42.Bb4? Kb4 43.Rd7 Re8 44.Re7 Re7 45.Kg5 c3 46.Kf6 Re8 47.Kg6 c2 48.Kf7 Rb8 0–1. mrkt – Joedimag, itsyourturn.com, 2000.

5.a3 Bg4 6.Be2 Be2 7.Qe2 Nf6 8.Nf3 Qg4 9.0-0 Be7 10.Nc3 e4 11.Nd4 Nd4 (11...Qe2!? 12.Nce2 Ne5+=) 12.Qg4= (worse is 12.ed4 Qe2 13.Ne2 d5+=) 12...Ng4 13.ed4 Bg5? (13...f5 14.f3 ef3 15.Rf3+=) 14.Rad1 (14.Ne4 Bf4 15.g3 f5+/-) 14...0-0 (better is 14...f5!?=) 15.Ne4+/- Bf4 16.g3 Bh6 17.d3 f5 18.Nc3 f4 19.Ne4 fg3 20.hg3 a5 21.b5 Nf6 (21...d5 22.Nc3+/-) 22.Nf6 gf6 23.d5 f5 24.Rde1 Rf7 25.Re6 Bg5 26.Rfe1 h5?? (26...f4 27.g4 f3+-) 27.f4 (27.Rg6 Kh7 28.Rg5 Rg8 29.Rh5 Kg6+-) 27...Bh6 (27...Bd8 28.Rh6 Rg7 29.Bg7 Kg7+-) 28.Rh6 Kf8 (28...Rh7 29.Rh7 Kh7 30.Re7 Kh6 31.Rc7 Rg8+-) 29.Rh8 1–0. Fournier,Frederic – fernagb(C), Active, 2007.

5.Nf3 Qf6 6.d3 h6 7.g3 b6? 8.Be2 Bb7 9.b5 Nd8 10.0-0 Bf3? 11.Bf3+- Rb8 12.d4 Qe6 13.Bd5 Qe7 14.Qf3 f6? 15.Nd2 Rc8 16.de5 de5 17.Be4 h5 18.Rad1 Ne6 19.Bg6 Kd8 20.Ne4 Qd6 21.Nd6 Bd6 22.Bf5 Ng5 23.Qc6 Ke7 24.Qd7 Kf8 25.Qc8 Kf7 26.Qb7 Ne7 27.Bc2 Nc8 28.Rd6! Ne6 29.Bf5 Nd6 30.Be6 Ke6 31.Qc7 Rb8 32.Rc1 Rc8 33.Qg7 a5 34.ba6 Ra8 35.a7 Nf5 36.Qb7 Rg8 37.a8Q Ra8+- 38.Qa8 Nd6 39.Qc6 Ke7 40.Qb6 Ke6 41.Rd1 Kf5 42.Rd6 Kg4 43.Rf6 Kh3 (43...h4 44.Qe6 Kg5 45.Qf5#) 1–0. valpa – fazghanie, playchess.de, 2002.

5.Nf3 Qg4 6.Nc3 Nc6 7.h3 Qf5 (7...Qg6!?+=) 8.g4+/- Qd7 9.b5 Nb8 10.g5 Ng8 11.c5! Qf5 (11...dc5 12.Ne5 Deflection) 12.Bc4 Be6 13.Nd5 Bd5 14.Bd5 c6 15.bc6 bc6?! (15...Nc6 16.e4 Qd7 17.Qb3+-) 16.Qa4 Kd7 (16...Qd7 17.Bb3 Qf5+-) 17.Rc1 e4 (17...Kd8 18.Be4 Qe6 19.Qa5 Kd7 20.cd6 Bd6+-) 18.Be4 Qe6 19.cd6 Qd6 (19...Kd8 20.Bc3 Bd6 21.Bg7 Ne7 22.Bh8 Ke8+-) 20.Ne5 Kc7 21.Bc6 Nc6 22.Rc6 1–0. marektheim – qsnn, internet, 2015.

5.Nf3 Qh6 6.Nc3 Ng4 (6...Be7 7.d4 e4 8.Nd2=) 7.Nd5 (7.d4 ed4 8.ed4 Be7+=) 7...Kd7 (7...Kd8 8.d3+=) 8.d4+/- e4 9.Nd2 (better is 9.Ne5 de5 10.Qg4 Kd8 11.Qe4+=) 9...c6?? (better is 9...Nh2 10.g4 c6=) 10.Qg4+- Ke8 (10...Kd8 11.Qe4 cd5 12.Qd5 Qg6+-) 11.Qc8 1–0. Janek – jawaj, internet, 2016.

5.a3 f6 6.e3 Qd5 7.Nc3 Qe6 8.Be2 b6 (8...d5 9.Rc1 c6 10.0-0+=) 9.0-0 Ba6?? (9...d5 10.e4 de4 11.Ne4=) 10.b5 (better is 10.Ba6 Na6 11.Qa4 Qd7 12.Qa6+-) 10...Bb7= 11.d4 ed4 (better is 11...d5!?=) 12.Nd4+/- Qf7 13.Bf3 Nd7?? (better is 13...d5+/-) 14.Bb7+- Rb8 15.Bc6 (15.Bd5 Qg6 16.Nc6 Rc8+-) 15...g6 (15...Ne7+-) 16.Bd5 Qe7 17.Nc6 Qg7 18.Nb8 Ne7 19.Nd7 Kd7 20.Bc6! Nc6 21.bc6 Kc6 22.Qd5 Kd7 23.Nb5 Qe7 24.Na7 Bh6 25.Qc6 Kd8 26.Nb5 Re8 27.Rfd1 Bg5 28.Rac1 Be3 29.Bf6 Bf2 30.Kh1 Qf6 31.Qc7 1–0. Fournier,Frederic (1710) – sven74, Active (5/0), 2005.

5.a3 Nh6 6.Nc3=+ Nc6 7.e4= Qe6 8.Nd5 Kd8 9.Qc2 a5?? 10.b5+- Nb8?? 11.Qc7 Ke8 12.Rc1 (12.Rc1 Na6 13.ba6+-) 1–0. aschellen (1665) – wallibi, internet, 2006.

4.b5 Nf6 5.e3 Bf5 6.a4 Nbd7 7.Nc3 Be7 (7...Nc5 8.d3=+) 8.Nge2 (8.Qf3!? Bg4 9.Qb7+=) 8...0-0 (8...Nc5 9.Nc1=+) 9.Ng3= Bg6 10.d4 ed4 11.ed4 a6 12.Bd3 Bd3 13.Qd3 c5 (13...d5 14.c5= (worse 14.Nd5 Nd5 15.cd5 Bb4 16.Kf1 Nf6=+)) 14.Nd5 (better 14.0-0!?+=) 14...Nd5=+ 15.cd5 Bf6 16.0-0 Qb6 (16...Nb6=) 17.Rad1 (better 17.Ne4!?+=) 17...ab5=+ 18.ab5 Ra5 19.dc5 Nc5 (19...Qc5?! 20.Bf6 Nf6 21.Nf5=; 19...dc5?! 20.Bf6 Qf6 21.Rfe1+=) 20.Qc2? (20.Qe2 Bb2 (worse 20...Qb5 21.Qb5 Rb5 22.Bf6 gf6 23.Nf5+=) 21.Qb2 Rb5=+) 20...Bb2 (better 20...Ra2!? 21.Rb1 Rfa8-+) 21.Qb2=+ Rb5 22.Qc2 Re8 (22...Rb2 23.Rb1 Rb1 24.Rb1=+) 23.Rfe1= Qd8 (23...Re5 24.Re5 de5 25.Qf5=) 24.Qc4 (24.Nf5!? Re1 25.Re1=) 24...Ra5 25.f3 (25.Qc3 Re1 26.Re1 Ra6=+) 25...Re1-/+ 26.Re1 Qb6 27.Re8 (27.Kf1 Qb2-/+) 27...Kh7 28.Qc2?? (28.Kf1 Qb2 29.Re1 Ra2-+) 28...g6 (28...Ne4 29.Kf1 Qb5 30.Ke1 Ra1 31.Qd1 Rd1 32.Kd1 Qd3 33.Kc1 Qd2 34.Kb1 Nc3 35.Ka1 Qc1) 29.Re7?? (29.h3 Ne6 30.Kh2 Rd5 31.Ne4=+) 29...Ra1 30.Nf1 (30.Kf2 Nd3 31.Ke2 Nf4 32.Kd2 Qd4 33.Qd3 Qd3) 30...Ne6 (30...Ne4! 31.Qf2 Qf2 32.Kh1 Qf1) 31.Qf2=+ Qf2 (31...Nd4 32.Rf7 Kg8 33.Re7=+) 32.Kf2= Nd8 (32...Ra2 33.Kg1 Nd4 34.Rf7 Kg8 35.Rb7 Ne2 36.Kf2 Nf4 37.Kg3 Nd5 38.Rd7=) 33.Rd7 Ra8 34.Ne3 Kg7 35.Nc4 b5 36.Nd6 Ra2? (better 36...b4=) 37.Kg3 Ra8 38.Nb5 Kf6 39.Rb7?? (better 39.Nd6+-) 39…Nb7-+ 0-1. dannysmet (2055) - joli77 (2070), Rated Blitz game, lichess.org, 2021.

4.e3 c6 5.Nc3 Nf6 6.Nf3 Bg4 7.h3 Bf3 8.Qf3 Nbd7 9.Bd3 Qc7 10.0-0 g6 11.a4 Bg7 12.a5 a6 13.Rae1 0-0 14.Rd1 Rfe8 15.Rb1 e4 16.Ne4+/- Ne4 17.Be4 Bb2 18.Rb2 Ne5 19.Qe2 b5 20.ab6! Qb6 21.f4 Nd7 22.Qd3 c5? 23.Bd5+- Rad8 24.Qg6 Kh8 25.Qh6 Kg8 26.Rf3 Rf8 27.Rg3# 1–0. byco – kohorex, internet, 2009.

4.e3 Nc6 5.b5 Nce7 6.a4 Nf6 7.a5 Ne4 (7...a6 8.d4 ed4 9.ed4=) 8.d3 Nc5 (8...Nf6 9.Be2=) 9.d4 Nd7 10.Qc2 a6. Pech,Jaroslav – Stoyanov,Zdravko, FICGS, 2012.

4.e3 Be6 5.Nf3 Nf6 6.Be2 Be7 7.0-0 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 h6 7.0-0 Be6).

4.e3 Bf5 5.Nf3 Bb1 6.Rb1+= (6.Qb1 Nd7 (6...Nf6 7.Be2 Be7 8.0-0 Qd7 9.a3 a5 10.Qc2 0-0 11.d4 e4+/-) 7.Bd3 Ngf6 8.0-0 Qe7 9.Bf5 g6 10.Bh3 Bg7 11.e4 0-0-0+=) 6...Nd7 (6...Nf6 7.Be2 e4 8.Nd4 d5 9.cd5 Qd5 10.Nb5 Kd8 11.Bf6 gf6+/-; 6...e4 7.Nd4 Nf6 8.d3 d5 9.a3 a5 10.ba5 Ra5 11.cd5 Qd5+/-; 6...Be7 7.d4 e4 8.Nd2 d5 9.cd5 Qd5 10.Qg4 Nf6 11.Qc8 Qd8+-) 7.Be2 (7.d3 Be7 8.Be2 Ngf6 9.0-0 0-0 10.a3 a5 11.ba5 Ra5+=) 7...Ngf6 (7...e4 8.Nd4 a5 9.b5 Nc5 10.0-0 d5 11.f3 Nf6+/-) 8.0-0 Qe7 (8...Be7 9.Qc2 c6 10.e4 a5 11.a3 0-0+/-) 9.d4 (9.a3 0-0-0 10.d4 e4 11.Nd2 d5+=) 9...e4 10.Nd2 g5 (10...d5 11.Qc2+= dc4+=) 11.Qc2 (11.d5 Bg7+/-) 11...Bg7 (11...d5+/-) 12.d5 Rg8 13.Nb3 b6 (13...0-0-0!?+/-) 14.Nd4+- Nb8 (better is 14...Ne5!?+-) 15.Nf5 Qf8 (15...Qd8 16.f3+-) 16.f3 (16.Nh6 Rh8 17.Nf5 a5+-) 16...Nbd7 17.fe4 Ne5? (17...Bh8+-) 18.Be5 de5 19.Qa4 Nd7 20.d6! cd6 21.Qc6 Rd8 22.Nd6 Ke7 23.Rf7 Qf7 24.Nf7 Kf7 25.Rd1 (25.Rd1 Rgf8 26.Rd7 Rd7 27.Qd7 Kg8 28.Qa7+-) 1–0. Langschmidt,Dirk (2100) – Klawitter,Bernd (1860), RSS7E basic–22, 2010.

5.Be2 Be7 6.Nf3 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 h6).

5.Nf3 Be7 6.d4 e4 7.Nfd2 Bf5 8.Nc3 Nc6 9.a3 a6 10.Qc2 d5 11.cd5 Nd5 12.Nce4 0-0 13.Bd3 Kh8 14.Nc5 Bd3 15.Nd3 f5 16.0-0 f4? (16...Qe8 17.Nc5 Bc5 18.dc5+/-) 17.Rae1 (17.e4 Nb6 18.d5 Na7+-) 17...Bg5? (17...fe3 18.fe3 Rf1 19.Nf1+-) 18.ef4?? (better is 18.e4 f3 19.Nf3+-) 18...Nf4+/- 19.Nf3 Nd3 20.Qd3 Qf6 21.Ng5 Qg5+/- 22.Qc3 Rad8 23.Rd1 Rf4?? 24.Qd2 Qf5? 25.g3 Rf3 26.d5+/- Ne7?? 27.Qc3 Rc3-+ (27...Rc3 28.Bc3 Qf3-+) 0–1. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.