4.a4 a5 5.e3 c6 (5...g6 6.Nf3=) 6.d4 (6.Nc3 Nbd7+=) 6...g6 7.Nf3 Bg7 8.Bd3 0-0 9.Nbd2 Be6 (9...cb5 10.ab5 Nbd7 11.c4+=) 10.c4 b6 (10...Nbd7 11.Ng5+=) 11.0-0 c5 12.Ng5 cd4 (12...Bg4 13.Qc2+/-) 13.Ne6+- fe6 14.ed4 (14.Bd4?! Nbd7+=) 14...Nfd7? (better 14...Nbd7!?+/-) 15.Qg4+- e5 16.Qe6 Kh8 17.Nf3 (17.Qh3 Qe8 (17...ed4?? 18.Bg6 Nf6 19.Bd4+-) 18.Ne4 Rf5+-) 17...Rf6? (better 17...Rf3 18.gf3 ed4+-) 18.Qh3+- Rf4 (18...Qf8+-) 19.Ng5 h6 (19...Nf8 20.g3 Rf6 21.de5 de5 22.Be4+-) 20.Ne6 Rf7 (20...Qg8 21.Nf4 ef4 22.Bg6 Nf8+-) 21.Nd8 ed4 22.Nf7 (22.Nf7 Kh7 23.Nh6 Bh6 24.Bc1 Nf8 25.Bh6 Kg8 26.Bf8 Nd7 27.Be7 Ne5 28.f4 Ra7 29.Qe6 Kh8 30.fe5 Kg7 31.Qg6 Kh8 32.Rf8) 1-0. DEFFM – Baza, freechess.org, 2021.

4.a4 ab5!? 5.ab5 Ra1 6.Ba1 Nbd7=+.

4.a4 e5 (--> 1.b4 e5 2.Bb2 d6 3.b5 Nf6 4.a4 a5).

4.a4 Bd7 5.e3 d5 6.Nf3 e6 7.d4 Bc8 8.Be2 Nbd7 9.0-0 Bd6 10.c4 c6 11.c5 Be7 12.Nc3 e5 13.de5 Ne4 14.e6! fe6 15.Ne4 de4 16.Nd2 0-0 17.Ne4 Nc5 18.Nc5 Bc5 19.Qc2 Qe7 20.bc6 bc6 21.Rac1 Bb4 22.Qc6 Bd7 23.Qe4 Ba4 24.Qe5?? (24.Bd3 g5 25.Qe5+–) 24...Bd6= 25.Qe4 Rfc8?? (better is 25...Bb4=) 26.Rc8 Rc8 27.Qa4 Bb4 28.Bd4 Rc2 (28...Qe8 29.Bb5 Qe7 30.Bb6+–) 29.Bg4 (better is 29.Qc2 Qd7 30.Bg4+–) 29...Rc8 30.Qb5 Rf8 31.Qb6 e5 32.Ba1 (32.Be6 Kh8 33.Be5 Rd8+–) 32...Qg5 (32...Kh8 33.Qc6+–) 33.Qe6 Kh8 34.h3 h5 35.Bh5! Qh5 36.Be5 1–0. surmavlod – grendd, kurnik, 2013.

4.a4 Bf5 5.e3 Nbd7 6.c4 e5 7.Nf3 Be7 (7...Nb6 8.Be2=) 8.Be2= 0-0 9.0-0 e4 10.Nd4 Bg6 11.f3 d5 12.Nc3 c6? (better 12...dc4 13.f4 h6=) 13.bc6+– bc6 (13...Ne5 14.cd5 ef3 15.Nf3 Nf3 16.Bf3+– (16.gf3?! Nd5 17.cb7 Rb8+=; 16.Rf3?! bc6 17.dc6 Rc8+–)) 14.Nc6 Qe8 15.Ne7 (15.cd5 ef3 16.Bf3 Bd3+–) 15...Qe7 16.cd5 Ne5? (better 16...Rfd8+–) 17.Ba3 Qd7 18.Bf8 Rf8 19.fe4 h6 (19...Ne4 20.Rf4 Nc3 21.dc3 Qd6+–) 20.d4 Neg4 21.e5 (better 21.Qe1 Qc7 22.Bg4 Ng4 23.e5+–) 21...Ne3 22.Qe1 (better 22.Qc1 Nfd5 23.Nd5 Nd5 24.Qd2+–) 22...Nf1?? (22...Nfd5 23.Bb5 Qg4+–) 23.Qf1 (better 23.ef6 Nh2 24.Qg3+– (24.Kh2?! Qd6 25.Qg3 Qf6+–)) 23...Nd5+– 24.Bb5 Qd8 25.Qc4 (25.Nd5 Qd5 26.Rd1 Rc8+–) 25...Nc3 (better 25...Ne3 26.Qc5 Qg5+=) 26.Qc3+– Qd5 (26...Be4 27.Rf1+–) 27.Rd1 Be4 28.Bc4 Qa8 (28...Qc6 29.d5 Qa4 30.Rd4+–) 29.Bf1 (29.d5!?+–) 29...Rc8+– 30.Qe3 Bd5 (30...Qc6 31.Qh3+–) 31.Rc1 Rc1 32.Qc1 Qb7 33.Qc5 Kh7 (33...Qb3!? 34.Kf2 Bb7+–) 34.Qa5+– Qb3 35.Qb5 Qa2? (35...Qe3 36.Kh1 Qd4 37.Qd3 Qd3 38.Bd3 Kg8 39.a5+–) 36.Kh1 (36.a5!? Be4+–) 36...Qf2? (36...Qa1 37.a5+–) 37.a5 (37.Qd3 Kg8 38.a5 Be4+–) 37...Bc6 (37...Qd4 38.Qd3 Qd3 39.Bd3 Kg8+–) 38.h3?? (better 38.Qb1 Kg8 39.Qa1+–) 38...Bb5–+ 39.Kh2 (39.Kh2 Bf1 40.e6 Qg2; 39.Bb5 Qd4 40.Bf1–+). RichardSommer (2100) – Africanlad (1985), lichess.org, 2020.

4.c4 a4 5.a3 g6 6.Nc3 Bg7 7.Na4 0-0 8.Nc3 Nbd7 9.e3 Nb6 10.Qb3 e5 11.Nf3 Be6 12.Be2 c6 13.a4 d5 (13...e4 14.Nd4 c5 15.Ne6 fe6 16.0-0+/-) 14.cd5 (14.Ne5 Ne8 15.cd5 cd5+/-) 14...cd5 15.d4 (worse is 15.Ne5 d4 16.Qc2 dc3 17.Bc3 Nfd5–/+) 15...Nfd7 16.0-0 Qe7? (better is 16...e4 17.Ne1 Nc4 18.Bc4 dc4+=) 17.Ba3+– Qf6 18.Bf8 Bf8 19.de5 Ne5 20.Nd4 Nec4 21.Ne6 (21.Rfd1!? Bh6 22.Bc4 Nc4+–) 21...fe6 22.Rfd1 Bd6 23.e4 Qe5 24.g3 Bc5 (24...Na5 25.Qc2 Rc8 26.Rac1=) 25.ed5 ed5? (25...Rf8 26.a5 Rf2 27.Kh1 (27.ab6?? Re2 28.Kh1 Na5–+) 27...Re2 28.ab6–+) 26.Bf3 d4 27.Ne4 Be7 28.Nd2 Rc8 29.Rac1 Qf6 30.Kg2 Qf7 31.Nc4 Nc4 32.Rd4 Ne3 33.Qe3 Rc1 34.Qc1 Bc5 35.Qc5 (35.Qc5 Qf8 36.Bd5 Kg7 37.Qc7 Kf6 38.Rf4 Kg5 39.Qe5 Qf5 40.Rf5 Kh6 41.Qd6 Kg7 42.Qf8) 1–0. carocan (1665) – kreten1 (1760), kurnik, 2011.

4.c4 c5 5.Nf3 e5 6.Nc3 Nbd7 7.e4 a4 8.Bd3 Nb6 9.a3 Be7 10.0-0 0-0 11.h3 Be6 12.Ng5 (12.Qe2!?+=) 12...Bc4–/+ 13.Bc4 Nc4 14.Qc2 Nh5 15.Nf3 Nb2 16.Qb2 Nf4 17.Kh2 f5 18.ef5 Rf5 19.Qa2 Kh8 20.Nd5 (20.Qc2 Qd7 21.Ng1 Rh5–+) 20...e4–+ 21.Ne7 Qe7 22.Ng1 Raf8 23.Rae1? (23.Qc2–+) 23...Ng2 24.Kg2 (24.Re2 Nf4 25.Re3–+) 24...Qg5 25.Kh1 Rf2 0–1. nimzo1 – PeterRs, ChessWorld.net, 2016.

4.c4 Bf5 5.e3 e6 6.Nf3 h6 7.a4 Nbd7 8.Be2 Be7 9.0-0 0-0 10.Nc3 e5 11.d4 ed4 12.Nd4 Bh7 13.Bf3 Nc5 14.Ba3 Nfe4 15.Nd5 Bf6 16.Rc1 Bd4 (16...Be5!?=) 17.ed4+– (worse 17.Qd4 Nb3 18.Qb2 Nc1 19.Rc1 Ng5–/+) 17...c6? (better 17...Ne6+–) 18.dc5+– cd5 19.Qd5 (19.cd6!? Qg5 20.Re1 Rfe8+–) 19...Nc5 20.Bc5 dc5 21.Qd8 (21.Qb7!? Qd2 22.Rfd1 Qb4 23.Qa8 Ra8 24.Ba8 Kf8+–) 21...Rad8+– 22.Bb7 Rd4 23.Bd5 Be4 (23...Rb8 24.Rfe1 Kf8 25.Re2+–) 24.Rfd1 Rd1 25.Rd1 Bc2 26.Re1 Ba4 27.b6 (27.Ra1 Bb3 28.Ra5 Re8+–) 27...Rb8 28.b7 Kf8 (28...Kh7 29.Ra1 Bb3 30.Ra5 Bc4 31.Be4 (worse 31.Bc4 Rb7 32.Bd3 g6+–) 31...g6 32.Ra4+– (worse 32.Rc5 Ba6 33.Rc7 Kg7+–)) 29.Ra1 (29.Ra1 Bb3 30.Ra5+–) 1–0. BeepBeepImAJeep – ForkedyouOver (1930), IM BeepBeepImAJeep simul, 2017.

4.d4 b6 5.c4 (5.Nf3 e6=) 5...Bf5 (5...Bb7 6.e3=) 6.e3 (6.f3 Bd7+=) 6...c6= 7.Nc3 e6 8.Nf3 Be7 (8...cb5 9.Nb5 d5 10.Rc1=) 9.Be2 (9.bc6 Nc6 10.d5 Nb4+/-) 9...0-0 10.0-0 Qc7 (10...cb5 11.Nb5 Ne4 12.d5+=) 11.Nd2 (11.Nh4 Be4+/-) 11...Nbd7 (better is 11...d5!?=) 12.g4 Bg6 13.g5 (13.bc6!? Nb8 14.d5+/-) 13...Ne8+= 14.bc6 Nb8 15.f4 (15.Bf3 Nc6 16.d5 Ne5 17.de6 Nf3 18.Qf3 Qd8+=) 15...Nc6= 16.Bf3 Rb8 (16...Rc8 17.Nb5 Qd7 18.e4=) 17.Nb5+= Qd7 18.e4 Nb4 19.Bc3 (19.Qe2 f5+=) 19...Nd3 (19...d5!?=) 20.Be2+= Nb4 21.Bb4 (21.Qb1 d5 22.a3 dc4 23.ab4 Qb5 24.ba5 Nd6+=) 21...ab4 22.Qb1 (22.Bg4 f5 23.gf6 Nf6=) 22...d5 (22...Nc7 23.Nc7 (worse is 23.Qb4 d5 24.Qc3 Nb5 25.cb5 de4+=) 23...Qc7 24.f5 (worse is 24.Qb4 d5 25.Qb3 de4+=) 24...Bg5 25.Qd3 (worse is 25.fg6 Bd2 26.gh7 Kh7–/+; 25.Qb4?! Be3 26.Kg2 Bd4+=) 25...ef5 26.ef5+/-) 23.f5 (23.cd5 ed5 24.f5 Bh5 25.Bh5 Bg5 26.Qb4 Be3 27.Kg2 Bd2 28.Qd2 Qb5+=) 23...ef5 (23...dc4 24.Bc4 ef5 25.ef5=) 24.ef5+= Bg5 25.fg6 Be3 26.Kg2 Bd2 27.Qc2 Bg5 (27...Bc3!? 28.gh7 Kh8 29.Nc3 bc3 30.Qc3 Rc8=) 28.gh7+/- Kh8 29.Rf5 Bh6 (29...Rc8 30.Qb1 Be7 31.Rd5+/-) 30.Rd5+– Qe6 31.Re5 Qc6 32.Bf3 Qd7 33.Rae1 g6 34.Rd5 Qc8 35.Re7 Kh7 36.Na7 Qa6 37.Nc6 Rc8?? 38.Ra7 Qa7 39.Na7 Rc7 40.Nb5 Re7 41.Nd6 Nf6 42.Rb5 Bf4 43.Rb6 (43.Rb6 Re6 44.c5+–) 1–0. Diener,Rudolf – Klugert,Eberhard, corr, 1985.

4.e3 Bf5 5.d4 (5.Bf6 ef6 6.d4 d5=) 5...Nbd7 6.Nf3 e6 7.Bd3 Bd3 8.Qd3 g6 (8...Be7 9.0-0=) 9.e4 Bg7 10.0-0 0-0 11.c4 Nb6 (11...c5 12.bc6 bc6 13.Nc3+=) 12.a4 (12.Nbd2 Re8+=) 12...Nfd7 13.Nbd2 e5 14.de5 Ne5 15.Qc2 (15.Ne5 Be5 16.Be5 de5+=) 15...Qe7 (better 15...Nf3 16.Nf3 Bb2 17.Qb2 Nc4=) 16.Rac1 (better 16.Ne5 Be5 17.Be5 Qe5 18.Nb3+=) 16...Nf3–/+ 17.gf3 (17.Nf3!? Bb2 18.Qb2 Qe4 19.Qb3–/+) 17...Bb2–+ 18.Qb2 Na4 19.Qc2 (19.Qd4 Nc5–+) 19...Nc5 20.Kh1 Qf6 (20...f5 21.Ra1–+) 21.Ra1 b6 (21...a4 22.Ra3–+) 22.Ra3 Rfe8 (22...Qf4 23.Re1–+) 23.Rg1–/+ Re5 (23...Qd4 24.Nf1–/+) 24.Nf1 Rg5 (24...a4 25.Rg3–/+) 25.Rg5 Qg5 26.Ne3 Ne6 27.Nd5 Nf4 28.Nf4 Qf4 29.Qd1 (29.Qd3 Qc1 30.Kg2 Re8–+) 29...Re8–+ 30.Re3 Re5 31.Qf1 Rh5 32.Qg2 (32.Qg1 Rc5 33.Qf1 Qe5–+) 32...Qe5 33.Qg1 (33.Rd3 Qb2 34.Qf1 Rc5–+) 33...Kg7 (33...Qd4 34.Qf1–+) 34.Re1 (34.Ra3 f5–+) 34...Qf4 (34...Qc3!? 35.Qf1–+) 35.Re3 h6 (35...Rc5 36.Qc1–+) 36.Qg2 Rc5 37.Qf1 Qe5 38.Re1 (38.Qc1 Qd4–+) 38...Qc3 39.Rc1 (39.h3 Qc4 40.Qc4 Rc4–+) 39...Qf3 40.Qg2 Qg2 (40...Qd3!? 41.f3–+) 41.Kg2 Kf6 42.f4 (42.Kf3 Rh5–+) 42...Ke6 43.Kf3 (43.h4 f5 44.ef5 Kf5–+) 43...f5 44.h4 (44.Ke3 fe4 45.Kd4 c6 46.bc6 b5–+) 44...a4 (44...fe4!? 45.Ke3–+) 45.Ke3 fe4 46.Ke4 (46.Kd4 c6 47.Rg1 cb5 48.Rg6 Kf5 49.Rd6 Rc4 50.Ke3 Rc3 51.Ke2 a3 52.Rb6 a2 53.Rb5 Kf4–+) 46...Rh5 (46...Rc4 47.Rc4 d5 48.Kd4 dc4 49.Kc4–+) 47.Rh1 (47.Rg1 Kf6 (47...Rh4?! 48.Rg6 Kf7 49.Rg3–/+) 48.Ra1 Rh4 49.Ra4 g5–+) 47...Kf6 (better 47...g5!? 48.f5 Kd7 49.Ra1 Rh4 50.Kd5–+) 48.Rh3 Rc5 49.Kd4 Kf5 (better 49...d5 50.cd5 Rb5 51.Rh1–+) 50.Rg3? (50.h5 d5 51.hg6 Rc4 52.Kd5 Rc5 53.Kd4 Kg6–+) 50...a3 (better 50...d5 51.cd5 Rb5 52.Kc4–+) 51.Ra3 Kf4 52.Ra8 g5 53.hg5 hg5 54.Rf8 Kg4 (54...Kg3 55.Ra8–+) 55.Rf7 (55.Re8 Kg3–+) 55...Kg3 56.Rg7 g4 57.Kd3 (57.Rf7 Kg2–+) 57...Kf3 58.Rf7 Kg2 59.Rg7 (59.Kd4 g3 60.Rh7 Kf3–+) 59...g3 60.Kd4 Kf2 61.Rf7 Kg1 62.Rg7 (62.Rh7 Rg5 63.Rc7 g2–+) 62...g2 63.Kd3 Kh2 64.Rh7 Kg1 (64...Kg3!? 65.Rg7 Kf3 66.Rg8–+) 65.Rg7 Rh5 66.Ke2 (66.Rc7 Kh2 67.Rg7 d5–+) 66...Kh2 67.Kf2 Rf5 (67...Rf5 68.Ke3 g1Q 69.Rg1 Kg1–+) 0–1. Koerner,Helmut (1910) – Gelman,Josef, 2rd Berlin Germany, Lichtenberger Somme, 2013.

4.e3 Nf6 5.Nf3 Be7 6.c4 (--> 4.e3 e5 5.c4 Be7 6.Nf3).

4.Nf3 b6 5.e3 Bd7 (5...e5 6.Be2=) 6.Be2 (6.Bf6 ef6 7.Bd3 c6+=) 6...c6 7.c4 d5 (7...e5 8.bc6 Bc6 9.0-0+=) 8.a4 (8.cd5 cd5 9.Bf6 gf6+=) 8...e6 9.0-0 Be7 (9...dc4 10.Bc4 Bd6 11.d4+=) 10.d3 (10.cd5 ed5 11.Ne5 0-0+=) 10...0-0 11.Nbd2 Bd6 12.Ne5 Be8 13.e4 (better 13.f4+=) 13...Nfd7? (13...dc4 14.Nec4 Bb4 15.bc6 Nc6 16.Nf3+=) 14.Ndf3 (14.Nc6 Qc7 15.cd5 ed5+–) 14...f6? (14...Ne5 15.Be5 Be5 16.Ne5=) 15.Nd7 (better 15.Nc6!? Nc6 16.bc6+–) 15...Bd7 16.h3 (16.cd5 ed5 17.Qb3 Kh8+=) 16...Qc7 (16...cb5 17.ab5 dc4 18.dc4+=) 17.ed5 (17.cd5 ed5 18.Qb3 Kh8 19.bc6 Bc6 20.ed5 Qf7 21.Qb6 Qd5+=) 17...ed5= 18.cd5 cb5 19.Nd4 (19.ab5 Bb5 20.Nd4 Bd7+=) 19...ba4 20.Ne6 Be6 21.de6 Nc6 22.d4 Ne7 (22...a3 23.Ba3 Ba3 24.Ra3 Qe7=) 23.d5 (better 23.Qa4!? Bb4 24.Rfd1+–) 23...Rad8=+ 24.Bf3 b5 25.Rc1 (25.Qd3 Rb8=) 25...Qb8=+ 26.Qd2 (26.Ra1 Bh2 27.Kh1 Bf4=) 26...b4 (26...Bh2 27.Kh1 Bf4 28.Qa5 Bc1 29.Rc1 Nd5 30.Rc5–/+) 27.Ra1 (27.Rb1 Bh2 28.Kh1 Bf4–/+) 27...a3 Black launches an attack 28.Ba3? (better 28.Bc1–/+) 28...ba3–+ 29.Qa5 Bb4 30.Qa6 Rd6 (30...Nd5?! 31.Qc4 Ne7 32.Rab1=+) 31.Qc4 Rc8 32.Qe2 (32.Qh4–+) 32...Nd5 33.Bd5 Rd5 34.e7 (34.Rfb1 Qd6–+) 34...Kf7 (better 34...Re5 35.Qf3 Be7 36.Rab1–+) 35.Rfe1 (35.Qe4 Qd6 36.Rab1 Rd4 37.Qh7 Qe7–+ (37...Ke7?! 38.Qg7 Kd8 39.Qg8 Kd7 40.Qh7 Qe7 41.Qf5 Kd8 42.Rfd1–+)) 35...Re5 (better 35...Be1 36.Re1 Re5 37.Qa2 Kg6 38.Rb1–+) 36.Qa2 Ke7 37.Reb1 Qd6 38.Qb3 (38.Rd1 Qc5 39.Qb3 Qc4–+) 38...Rb8 (38...Kf8!? 39.Rd1 Qe7 40.Qg3–+) 39.Rd1 Qe6 40.Qa4 (40.Qc2 Rd8 41.Rdb1 Kf7 42.Qh7 a2 43.Ra2 Qa2 44.Rb4 Re1 45.Kh2 Qf2 46.Rb7 Ke6 47.Qf5 Qf5 48.Re7 Ke7 49.Kg3 Rd3 50.Kh2 Qf4 51.g3 Qg3) 40...Rb7 (40...Kf8 41.Qc2 Qf5 42.Qa2–+) 41.Rab1 (41.Qa8 Qc6–+) 41...Ra5 (better 41...Kf7!? 42.Qc2–+) 42.Qc2 a2 (better 42...Qf5 43.Qc4 Rab5 44.Qg8–+) 43.Ra1?? (43.Rb4 Rb4 44.Qc7 Kf8 45.Qd8 Kf7 46.Qa5–+) 43...h6 (43...Kf7 44.Rf1–+) 44.Rd3 (44.Qg6 Rg5 45.Qd3 Kf7–+) 44...Bd6 45.Re3 (45.Rdd1 Be5 46.Re1 Kf7 47.Re5 fe5–+) 45...Be5 46.Ree1 Rb1 (better 46...Kf7 47.Qe2 Ra6 48.Qh5 Kf8–+) 47.Reb1 ab1Q (47...ab1N?! 48.Ra5 Qb6 49.Qa4=+) 48.Rb1 (48.Qb1 Ra1 49.Qa1 Ba1 50.Kf1 Qc4 51.Kg1 Qc1 52.Kh2 Qf4 53.Kg1 Bd4 54.Kh1 Qf2 55.Kh2 Be5 56.Kh1 Qe1) 48...Kf7 49.Rb7 Kg8 50.Rb1 f5 51.g3 (51.Qe2 Ra2 52.Qd3 Bd6–+) 51...g5 (51...f4 52.gf4 Bf4 53.Qb3–+) 52.Qd1 Kg7 53.Kh2 (53.Qe1 Ra7 54.Qe2–+) 53...Ra4 Black prepares the advance f4 (better 53...Ra2 54.Qf3 Bd4–+) 54.Qa4+– f4 55.Rb7 Kf6 56.Qb3 Qb3 57.Rb3 h5 (57...fg3 58.fg3 h5 59.Kg2+–) 58.Kg2 Kf5 59.Rb5 Ke4 60.f3 White terminates the opponent with strong threats 60...Kf5 61.g4 hg4 62.hg4 Ke6 (62...Kf6 63.Kf2+–) 63.Kf2 Bd4 64.Ke2 Kf6 (64...Bf6 65.Rb6 Ke5 66.Kd3+–) 65.Kd3 Ba7 66.Ke4 Kg6 (66...Bf2 67.Ra5 Be3 68.Ra6 Kf7 69.Kf5+–) 67.Ra5 (67.Ra5 Bf2 68.Ra6 Kf7 69.Kf5+–) 1–0. retiponziani (1835) – monthehibees (1795), ChessWorld.net, 2010.

4.Nf3 e5 5.e3 e4 6.Nd4 d5 7.Be2 a4 8.0-0 a3 9.Bc3 Nbd7 (9...Bd6 10.f3=) 10.d3 Nb6 11.Nd2 (11.f3 ed3 12.Bd3 Bc5=) 11...Na4=+ 12.Nb1 Bd6 13.Bd2 Qe7 14.Nc3 (14.f3 Qe5 15.f4 Qe7=+) 14...Nc3 (14...Qe5 15.g3–/+) 15.Bc3=+ 0-0 16.Bd2 Qe5 17.g3 (17.f4 Qe7=+) 17...Bh3–/+ 18.Re1 Rfe8 19.Bf1 Bg4 20.Be2 Qh5 21.f3 ef3 22.Bf3 Re5 23.Bg4 Ng4 24.Qe2 Rae8 25.Nf3 R5e6 26.Qg2 (26.Rab1 Bc5 27.d4 Bd6–/+) 26...Ne3 27.Be3 Re3 28.Re3 Re3 29.Rf1 Bc5 (29...d4 30.Kh1–+) 30.d4–/+ Bb4 31.Ne5 Re4 32.Nf7? (better 32.Nf3–+) 32...Bc3 (32...Re2!? 33.Rf2 Re1 34.Rf1 Rf1 35.Qf1 Qf7 36.Qe2–+) 33.Nd8 (33.Kh1 Re2 34.g4 Rg2 35.gh5 Rc2 36.h6–+) 33…Re2 (33...Re2 34.Rf4 Bd4 35.Kf1 Rg2 36.Kg2 Qe2 37.Kh3 Bg1–+) 0–1. drink1966 – PeterRs, ChessWorld.net, 2020.

4.f4 Bd7 5.e3 c6 6.c4 d5 7.a4 (7.Nc3 e6=) 7...Qb6 (7...e6 8.Nf3=) 8.Qb3 (8.Nf3 Bg4=) 8...Be6 9.d4 (9.Nf3 Nbd7=) 9...dc4 10.Bc4 Bc4 11.Qc4 e6 12.Ba3 Ba3 13.Na3 0-0 14.Rc1 Nd5 15.Ke2 (15.Qb3 cb5 16.Nb5 Nc6=) 15...Nd7 16.Nf3 N7f6 (16...Rac8!?=+) 17.Ne5= Ne4 (17...cb5 18.Qb5 Qa7 19.Kf3=) 18.Nd7 (< 18.bc6 Qb2 19.Nc2 Ndc3 20.Kd3 Nf2 21.Kd2 Nce4 22.Ke2 Nh1 23.Rh1 Rfc8–+) 18...Qd8 19.Nf8 Qh4 20.Rhe1 Qf2 21.Kd3 Nb4 22.Ke4 Qg2 23.Ke5 Rd8 24.f5 (24.Nd7 Rd7 25.f5 Rd5 26.Qd5 Qh2 27.Ke4 Qg2 28.Ke5 Qg3 29.Ke4 ed5) 24...Nd3!! 25.Qd3 (25.Qd3 Rd5 Mate attack) 25...Rd5 26.Kf4 g5 27.fg6 Qf2 (28.Kg4 h5 29.Kh3 Qf3 30.Kh4 Qg4) 0–1. Gerber,Klaus – Vandorffy,Jozsef, corr ICCF EU–H/23, 1956.

4.f4 Bg4 5.Nf3 =.

4.h3 e5=+ 5.e3 g6 (5...Be7 6.Be2=+) 6.c4 Bg7 7.d3 0-0 8.Nd2 Nbd7 (8...Qe7 9.Ngf3=) 9.Ngf3 Re8 10.Qc2 (10.Be2 Nc5=) 10...Nc5 (10...a4 11.Be2=) 11.Be2= b6 (11...a4 12.0-0=) 12.0-0 Bb7 (12...a4 13.Rad1=) 13.a4 (13.a3 e4 14.Ne1 ed3 15.Nd3 Nce4=) 13...Qe7 14.Nh2 Nfd7 (14...Qe6 15.Rae1=) 15.Ra3 (15.Rae1 Rac8=) 15...Nf8 (15...f5 16.Re1=) 16.Bf3 Bf3 (16...Nfe6 17.Bb7 Nb7 18.Nhf3=) 17.Ndf3 (17.Nhf3 Qf6+=) 17...Nfe6 (17...e4 18.Bg7 Kg7 19.de4 Qe4 20.Qc3 f6 21.Nd4=) 18.Rd1 (18.d4 Nd7=) 18...Nd3 (18...e4 19.de4 Bb2 20.Qb2 Ne4 21.Nd2=) 19.Rdd3 (19.Rad3 e4 20.Rd5 ef3 21.Bg7 Kg7 22.Nf3 Nc5=) 19...e4= 20.Rd2 ½–½. Fritz,Harry – Dieckmann,K, Aufstiegsturnier II/530, 1961.

5.d4 g6 (5...Bf5 6.e3=) 6.e3 Bg7 7.c4 0-0 8.Nf3 Bb7 (8...c5 9.bc6 Nc6 10.Be2=) 9.Bd3 Nbd7 10.0-0 c5 (10...Re8 11.Nc3+=) 11.d5 (11.bc6 Bc6 12.Nc3 Rc8+=) 11...e5 (11...e6 12.e4+=) 12.Nfd2 Re8 (12...Qe7 13.Nc3+=) 13.Nc3 Nf8 14.Re1 Bc8 15.h3 Bd7 16.Bc2 (16.Qf3 h6+/-) 16...Qc8 (16...h6 17.Qf3+=) 17.Qf3+/- h6 (17...Qc7 18.Rad1+/-) 18.Nde4 Ne4 19.Ne4 (19.Qe4? Bf5 20.Qf3 Bc2-+; 19.Be4?! Nh7+=) 19...Qc7 20.Nf6 Bf6 21.Qf6 Nh7 22.Qh4 Kg7 23.Rf1 Qd8 24.Qg3 Qg5 25.Qg5 Ng5 26.f4 Nh7 27.fe5 de5 28.g4 Ng5 29.Kg2 f6 30.Rf2 Rf8 31.Raf1 Rf7 32.Kg3 Raf8 33.h4 Nh7 34.h5 g5? 35.Bg6+- Bc8 36.e4 Bd7 37.Be5! 1-0. woschkat (1990) - rudy (1855), net-chess.com, 2001.

5.e3 Bb7 6.Nf3 g6 7.Be2 Bg7 8.c4 0-0 9.0-0 c6 10.d3 cb5 11.ab5 e6 12.d4 d5 (12...Nbd7 13.Ra4+=) 13.cd5 (13.c5!?+/-) 13...Nd5+= 14.Ne5 (14.Nbd2 Qd7+=) 14...Be5 (14...Qg5 15.Bf3=) 15.de5+= Nd7 16.Bf3 Rb8 (16...Nc5 17.Qe2+=) 17.Bd4 (17.Ba3 Nc5+=) 17...Qg5 (17...Qc7 18.Qc1=) 18.g3 (18.Nd2 f5+/-) 18...h5 (18...Nb4 19.Be2=) 19.Bg2 h4 (19...Ne5? 20.f4 Ne3 A) 21.fg5?! Nd1 22.Be5 Ne3 23.Bb8 Rb8+/-; B) 21.Be5?! Qf5 22.Qd4 B1) worse 22...Ng2 23.Bb8 Rb8 24.Qb6+=; B2) 22...Nf1 23.Bf1 (23.Kf1 Rbd8 24.Qc4 Rd1 25.Ke2 Qg4 26.Kf2 Rc8-+; worse 23.Bb8 Bg2 24.Kg2 Qb5-/+) 23...Rbd8 24.Qe3=+ (24.Qb6?? Qe4 25.Qb7 Qb7-+); B3) 22...Bg2 23.Qe3 Bf1 24.Bb8 Rb8 25.Kf1 Qb5 26.Kg1 Qb2=+; C) 21.Be3+-) 20.gh4 (20.e4!? Nb4 21.f4+/-) 20...Qh4 (20...Qg2 21.Kg2 Ne3 22.Kh3 Nd1 23.Rd1 Bf3=+) 21.Nc3 (better 21.Qe2!?=) 21...Nc3-/+ 22.Bc3 Nc5 (22...Bg2!? 23.Kg2 Ne5-/+) 23.Bb7= Rb7 24.Kh1 (24.Bd4 Rd7=+) 24...Qe4 25.Kg1 Rd7 26.Qe2 Nd3 27.Rad1 (27.f3 Qc4 28.Bd4 Ne5-/+ (28...Qb5? 29.Rad1+-)) 27...Ne5 (27...Rc8!? 28.Bb2 Rcd8-+) 28.Rd7 Nd7 29.f3 (29.Rd1 Ne5 30.Be5 Qe5-/+) 29...Qf5 30.Kh1 (30.Rd1 Rc8 31.Ba5 Ne5-/+) 30...Nc5 (30...Rc8 31.e4 Qh3 32.Bd2-+) 31.Bd4 Qd3 (31...Rc8-/+) 32.Qg2? (32.Qd3 Nd3 33.Bb6 Rb8 34.Ba5 Rb5=+) 32...Qb5 (32...Nd7 33.f4-+) 33.f4? (better 33.Qh3!? f6 34.Rg1-/+) 33...Nb3-+ 34.Be5 Qd5 (34...Nd2 35.Re1 Nc4 36.Qg3-+) 35.Qd5 ed5 36.Bd6? (36.Rd1 Rd8-+) 36...Rd8 (36...Nd2 37.Rg1 Rc8 38.f5-+) 37.Be5 (37.Bc7 Ra8 38.Bb6 a4-+) 37...a4 Black prepares d4 38.Bc3 (38.Bc7 Ra8 39.Bb6 a3-+) 38...f6! 39.Bf6 Kf7?? (39...Rd7 40.f5 gf5 41.Kg2-+) 40.Bb2?? (better 40.Bd8 b5 41.Bc7+-) 40...d4 (40...Re8 41.Be5-+) 41.Bd4 (41.ed4 Nd4 42.Rd1-+) 41...Rd4?? (better 41...Nd4 42.ed4 Rd4-+) 42.ed4= a3 43.Rb1?? (better 43.Rf2 b5 44.d5=) 43…a2-+ (43...a2 44.Rd1 Ke6-+; 43...Nd4 44.Rb6 Ne2 45.Ra6+-) 0-1. Choco2K - MeikeSchlecker (2250), Rated Bullet game, lichess.org, 2014.

5.e3 e5 =.

5.c4 e6 6.Nc3 Be7 7.Nf3 d5 8.e3 d4 (8...0-0 9.Rc1=) 9.ed4+= cd4 10.Na2 Bc5 11.d3 (better is 11.Nc1!?+=) 11...0-0+= 12.g3 e5 13.Bg2 Qc7 14.0-0 Bg4 15.h3 Bh5 16.g4 Bg6 17.Ng5 (17.Nh4!?=) 17...h6+= 18.Nf3 Nbd7 19.Qd2 (19.Nh4 Bh7+=) 19...Rfe8–/+ 20.Nh4 Bh7 21.Nf5 Nb6 22.Be4? (better is 22.Qc2–/+) 22...Ne4–+ 23.de4 Na4 24.Bc1 Bf8 25.f3 Qc4 26.Rb1 Nc5 27.Ba3 Ne4! 28.fe4 Ba3 29.Rf3 Be7 30.Nc1 Bg5 31.Qd3 Qd3 32.Nd3 a4 33.h4 Bf5 34.Rf5 Bh4 35.Re5 Re5 36.Ne5 a3 37.Ra1 Bf6 38.Nd3 Be7 39.Kf2 Ra5 40.Ke2 Rb5 41.Kf3 Rb3 42.Ke2 b5 0–1. Baer,Cy (1895) – Valverde,Mario (2055), CiF, 2007.

5.Nf3 e5 =.

5.g3 e5 6.Bg2 =+.

5.g3 g6 6.Bf6= ef6 7.d4 b6 8.Bg2+= Ra7 9.Ra3 Bh6 10.dc5 dc5 11.Qd8 Kd8 12.Rd3 Rd7 13.Bd5 Kc7 14.c4 Re8 15.Nc3 f5 16.e3 Bb7 17.Nge2+= Rde7 18.Bb7 Kb7 19.Nd5 Re6 20.Nec3 Nd7 21.f4 Bg7 22.Ke2 Bc3 23.Rc3 Nf6 24.Nf6 Rf6 25.Rd1 Kc7 26.Rcd3 Re7 27.Rd5 Rfe6= 28.Kf2 Re3 29.Rd7=+ Rd7 30.Rd7 Kd7 31.Ke3 ½–½. Myrberg,Johnny – Sundqvist,JO, corr SSKK lag–SM 1990 div. II, 1991.

5.g3 g6 6.Bf6 ef6 7.d4 c4 8.d5 Ra7 (better is 8...Bg7!? 9.Nf3 Nd7=) 9.Ra3 (9.Qd4!? Ra8 10.Na3+/-) 9...Bh6. Myrberg.

5.g3 g6 6.Bf6= ef6 7.d4 Bg7!? =.

5.Ra3 cb5 6.ab5 e5 7.Rg3 Ne4 8.Re3 f5 9.Na3 Nd7 10.Qa1 Qe7 11.h4 (11.d3 Ng5 12.f4 Ne6–/+) 11...Ndc5 (11...d5 12.Nh3–/+) 12.h5 (12.Nc4!? Be6 13.Nb6+=) 12...f4–/+ 13.Reh3 (better is 13.Rf3!?–/+) 13...Bh3–+ 14.gh3? (14.Nh3 Na4 15.Nc4 Nb2 16.Qb2–+) 14...Qh4 15.Nf3 (15.Rh2 Nf2! 16.Nf3–+) 15...Qf2 16.Kd1 Ng3 17.Rg1 Nf1 18.Be5 Ng3 19.Bf4 Qe2 20.Kc1 Qf3 21.Bg3 0-0-0 (better is 21...Rc8 22.Kb1 Ne4 23.Be1–+) 22.Nc4 a4 23.Nb6 Kc7 24.Na4 Na4 25.Qa4 b6 (25...Qh5 26.Bf2 Rc8 27.Rg7 Bg7 28.b6 Kd8 29.Bh4 Qh4 30.Qh4 Ke8 31.Qa4 Kf8 32.Qf4 Kg8 33.Qd6=) 26.Qa7 Qb7 27.Qa4 Be7 28.Re1 Rhe8 (28...Rd7 29.h6 g6 30.Qd4–+) 29.Re3 (29.Qc4 Kb8–+) 29...Qh1 30.Kb2 (30.Re1 Qf3 31.Qa7 Qb7 32.Qa2–+) 30...Bf6 31.c3 Re3 32.Qc4 Kb8 33.de3 Qg2 34.Kb3 Qg3 35.Qc6 Qe3 36.Kb4 Qc5 37.Qc5 dc5 38.Kc4 Bc3! 39.Kc3 Rd5 40.Kc4 Rh5 41.Kc3 Rh3 42.Kc4 Rh1 (42...Rh1 43.Kd3 Rd1 44.Kc2 Rb1–+) 0–1. xtom (1610) – krakenisko (1695), kurnik, 2012.

5.e3 Nbd7 6.Nf3 Qb6 (6...e5 7.Be2=) 7.d4+=. nordlicht (1965) – prawnvindaloo, gameknot.com, 2011.

5.e3 e6 6.c4 Be7 7.Nf3 cb5 (7...e5 8.Nc3=) 8.ab5 b6 (8...0-0 9.d4=) 9.Be2 Bb7 10.0-0 Nbd7 11.d4 0-0 12.Nc3 (12.Nbd2 Rc8+=) 12...Qc7= 13.Qb3 Ne4 (13...Ra7 14.Ra4+=) 14.Ne4+= Be4 15.Nd2 Bb7 16.Bf3 Nf6 17.Rfc1 (17.e4 d5 18.e5 Ne4 19.Be4 de4+=) 17...Bf3= 18.Nf3 Ne4 19.Qc2 Qb7 20.Qd3 (20.Ra4 d5+=) 20...Rac8 (20...Rfc8 21.Ba3=) 21.d5 (21.Ba3 Rfe8+=) 21...Nc5= 22.Qc2 (22.Qd1 Rfe8=) 22...e5 (better 22...ed5!? 23.cd5 Qd5=+) 23.Nd2 f5 24.f3 (24.Ba3 Qc7+=) 24...Bg5= 25.Kf2 (25.Ra3 Qf7=) 25...Qf7 26.Nb3 Nb3 (26...Ne4 27.Kf1=+ (worse 27.fe4 fe4 28.Kg1 Be3 29.Kh1 Bc1 30.Qc1 Qf4–+)) 27.Qb3= Qh5 28.Kg1 Qh6 29.Re1 f4 (29...e4 30.fe4 fe4 31.Bd4=) 30.e4+= Be7 31.Qa3 (31.Qd3 Qh5=) 31...g5 (31...Rc4!? 32.Be5 Rfc8=+) 32.Be5+= Rc4 33.Rac1 Rfc8 (33...Rb4 34.Bc3 Rb5 35.Qa4+–) 34.Bb2 (34.Bd4 Bd8+–) 34...Qf8 (better 34...Rc1!? 35.Rc1 Rc1 36.Bc1 Bf6+=) 35.Rc4+– Rc4 36.Qd3 Qc8 37.Re2?? (better 37.Bd4+–) 37...Qc5=+ 38.Kf1 Kf7?? (better 38...Qb5 39.Qd2 Qc5=+) 39.e5+– de5 40.Qh7 Ke8 41.Be5?? (better 41.Re5 Rb4 42.Qg8 Kd7 43.Qe6 Kc7 44.Qe7 Qe7 45.Re7 Kd6 46.Bf6 Rb5 47.Bg5 Rd5 48.Rg7+–) 41...Rc1–+ 42.Re1 Qc4 0–1. GuestYMFB – GuestKQDG, freechess.org, 2019.

5.c4 Nb6 (5...e5 6.d4=+) 6.e3= e5 7.d4 Be7 (better 7...e4!?=) 8.de5+= de5 9.Qd8 Bd8 (9...Kd8 10.Be5 Bb4 11.Nc3+=) 10.Be5+/- Be6 11.Nd2 0-0 (11...Nbd7 12.Ngf3+/-) 12.e4 (12.Bd4!?+/-) 12...Nfd7+= 13.Bd4 Bg5? (13...Be7 14.Ngf3+=) 14.Bb6 (better 14.c5!? Nc8 15.Ngf3+-) 14...Nb6 (14...Bf6 15.Ra2 Nb6 16.Ngf3=) 15.Ngf3 Bf6 16.Ra2 (16.e5 Be7 17.Bd3 Bb4+=) 16...Bc3 (16...Rad8 17.Be2=) 17.Bd3+= Bc4 18.Bc4 Nc4 19.Rc2 Bd2 20.Nd2 Nd2 21.Kd2 Rad8 (21...Rae8 22.Rc7 Re4 23.Rb7 Ra4 24.Rc1+=) 22.Ke3 Rd7 23.Rhc1 Rc8 24.f4 (24.Rc5 f6+/-) 24...Kf8 25.g4 f6 26.f5 Kf7 27.Kf4 (27.Rc5 Ke7+/-) 27...h6 (27...Kf8 28.g5+/-) 28.h4 White prepares g5 28...Ke7 (28...Kf8 29.Rc5+/-) 29.g5 h5 (29...Kf7+/-) 30.e5 (better 30.Rc5!?+-) 30...fe5+= 31.Ke5 Kf7 (31...Re8!? 32.Rc4 Kd8 33.Kf4 Re2+/-) 32.g6 Ke7 33.Rc4 (33.Rc5+-) 33...Kd8? (33...Re8!?+=) 34.Kf4 (34.f6!? Ke8+-) 34...Ke7 (better 34...Rd2!?+/-) 35.Kg5+- b6 (35...Ke8 36.Rc5+-) 36.Re4 Kf8 37.Kh5 Rd5 (37...Kg8 38.Rc6+-) 38.Kg5 Kg8 (38...Rd2 39.Rc6+-) 39.Re6 (better 39.Rc7! Rf8 40.Rf4 Rd2+-) 39...Rf8 40.Rf1 (40.Rc7?! Rdf5 41.Kg4 Rf4 42.Kg3 Rf3 43.Kg2 Rf2 44.Kg1 Rf1 45.Kh2 R1f2 46.Kh3 R2f3 47.Kg4 R3f4 48.Kg3 Rf3 49.Kg4 R3f4=) 40...Rd4 (40...Rd3 41.f6 Rg3 42.Kh5 gf6 43.Ref6 Rf6 44.Rf6+-) 41.h5 Ra4 42.h6 (42.f6 gf6 43.Ref6 Rf6 44.Rf6 Ra2+-) 42...gh6 43.Kh6 Rh4 44.Kg5 Rh2 45.Re7?? (better 45.f6 Rg2 46.Kf5+-) 45...Rg2+/- 46.Kh4 (better 46.Kf4+/-) 46...Rh2?? (better 46...Rg6! 47.Rc7 Rg2=) 47.Kg3+- Rb2?? (better 47...Rh6 48.Rf4 Rh1+-) 48.f6 Rb5 (48...Rf6 49.Rf6 Rb5 50.Rc7 Rc5+-) 49.Rg7 Kh8 50.Rh1 (50.Rh1 Rh5 51.Rh5) 1-0. alkiviad (1635) - chatkf (1650), Rated Blitz game, lichess.org, 2014.

5.e3 Nb6 6.Nf3 e5 7.c4 Be7 (7...e4 8.Bf6 Qf6 9.Nd4=) 8.Nc3 (8.d4 e4 9.Nfd2 Be6=) 8...0-0 9.Be2 Nbd7 (9...Be6 10.Qb3=) 10.0-0+= b6 11.d4 ed4 12.Nd4 Re8?? (better 12...Bb7+=) 13.Bf3 (better 13.Nc6 Ne5 14.Nd8 Bd8+-) 13...Ne5 14.Ba8 Bg4 15.Bf3 Nf3 (15...Bf3 16.Nf3 Nc4 17.Qc2+-) 16.Nf3 Qd7 17.Nd5 Nd5 18.cd5 Qf5 (18...h6 19.Rc1+-) 19.Re1 (19.h3 Bf3 20.Qf3 Qf3 21.gf3 Bd8+-) 19...Bf6 (19...Qg6 20.Kh1+-) 20.Bf6 Qf6 21.Qd4 Qg6 22.Qf4 Re4 (22...f6 23.Rec1 Re7 24.Rc4+-) 23.Qg3 (better 23.Nh4 Rf4 24.ef4 Kf8 25.Ng6 fg6+-) 23...Qf5 (23...Re7 24.Nd4+-) 24.h3 (better 24.Nh4!? Qh5 25.f3 Rb4+-) 24...Bh5 25.Nh2 (25.Nd2 Rb4 26.e4 Qd7+-) 25...Qf6 (25...Qd5 26.Rac1 Ra4 27.Rc7+-) 26.Ng4 Bg4 27.hg4 Qg5 (27...h6 28.Qf3 Qe5 29.Rec1+-) 28.f3 (better 28.Rec1!? Qd8+-) 28...Rc4 29.Rad1 1-0. hurvajsmanka (1730) - BearJr (1880), Rated Bullet tournament, lichess.org, 2014.

5.Nf3 e5 6.e3 Be7 7.Nc3 0-0 8.Bc4 c6 9.Be2 d5 10.Qb1 Re8 11.Ba3 e4 12.Be7 Qe7 13.Nd4 c5 14.Nf5 Qe5 15.Ng3 b6 16.h4 Nf8 17.h5 h6 18.Qb2 Bb7 19.0-0-0 d4 20.Nb1 Rad8 21.Rdg1 c4 (better is 21...Qe6!?–/+) 22.Bc4+= Qc5 23.Qb3 Bd5 24.Na3 Rc8 25.Bd5 Nd5 26.Nf5 Ne6 27.Rh4 Nb4 28.g4 Nc2! 29.Nc2 (29.Nc2 d3 Pinning (29...d3 Decoy); 29.Qc2 Qa3 Mate attack) 29...d3 30.Kb1? (better is 30.Kb2 dc2 31.Rc1 Qe5 32.Ka3–+) 30...dc2 (30...Qc2?! 31.Qc2 dc2 32.Kb2–/+) 31.Kc1 Qe5 32.Qb2 (32.Qa3 Nc5 33.Kc2 Na4 34.Kb1 Qb5 35.Ka1 Qe5 36.Nd4–+) 32...Nc5 33.Qe5 Nd3 (33...Re5?! 34.Kc2 Na4 35.Kd1 Rb5 36.Ne7 Kh7 37.Nc8 Rb1 38.Ke2 Rg1 39.g5–+) 0–1. Korobeynikov,Alexandr (1840) – Kalyndu,Aldynbek (2100), Novokuznetsk RUS, Siberia Ch (m), 2013.

5.c4 Bg7 6.Nf3 0-0 7.e3 c6 8.Be2 b6 9.0-0 Bb7 10.d3 Nbd7 11.Nbd2 Qc7 12.Rc1 Rac8 13.Ng5 c5 14.Bf3 e5 (14...Rcd8 15.Qe2=) 15.Bb7+= Qb7 16.Qf3 Qc7 17.Nde4 Ne4 18.Ne4 (< 18.de4 h6 19.Nh3 Nf6=) 18...Nf6?? (better is 18...Rfe8+=) 19.Nf6+- Kh8 (19...Bf6 20.Qf6 Rce8 21.Rce1+-) 20.Nd5 Qd7 (20...Qd8 21.Qg3+-) 21.Qg3 (better is 21.Nb6 Qc7 22.Nc8 Rc8+-) 21...Rb8 22.Rb1 (22.f4 Qe6+-) 22...f5 23.Bc3 Kg8 24.Qh4 Kh8 25.Qh3 Kg8 26.Bd2 Kh8 27.d4 ed4 28.ed4 Bd4 29.Be3 (29.Rfe1 Be5+-) 29...Bg7 30.Nf4 (30.Rfe1 Rfe8+-) 30...Kg8 31.Rbd1 Rbe8 32.Nd5 Qe6 (32...Qd8 33.Bh6+-) 33.Nc7 Qe4 (33...Qc4 34.Ne8 Re8 35.Rd6+-) 34.Ne8 Re8 35.Bg5 (35.Rd6 f4 36.Bd2 Qc4+-) 35...Qc4 36.Qg3 (better is 36.Rd6 Qa4 37.Rb6 Qb4+-) 36...Be5 37.Qh4 Qa4 (37...Qh4 38.Bh4 Bf4+-) 38.Qa4 Re6 39.Qc4 Kf7 40.Rde1 h6 41.Bf4 Kf6+- 42.Be5 (42.Bh6 f4+-) 42...Re5 43.Re5 de5 44.Re1 e4 45.Qd5 h5 46.Qc6 Kg5 47.g3 Kh6 48.h4 Kg7 49.Rd1 Kf7 50.Rd7 Ke8 51.Qc8 1-0. stoker - michel, Live Game Caissa's Web, 2004.

5.e3 Bg7 6.Nf3 0-0 7.d4 e5 8.Be2 e4 9.Nfd2 d5 10.c4 Be6 11.cd5 Bd5 12.Nc3 Nbd7 (12...Re8 13.0-0+=) 13.Qc2 (13.Nd5!? Nd5 14.Ne4+/-) 13...Nb6 (13...c6 14.Rc1+= (worse 14.Nde4 Ne4 15.Ne4 Qh4=)) 14.Nce4 (14.g4+/-) 14...Be4?? (better 14...Ne4 15.Ne4 Qh4=) 15.Ne4+- Ne4 16.Qe4 Nd5 17.Bf3 c6 18.bc6 bc6 19.Ba3 (better 19.0-0+-) 19...f5? (19...Re8!? 20.Qd3 Qh4 21.Bd5 cd5+/-) 20.Qd3 (better 20.Qe6!? Rf7 21.Qc6 Nc7+-) 20...Re8 21.0-0 Rc8 22.Qc4 (22.Rab1 Qd7+-) 22...Kh8 23.Rac1 (23.Rfd1 Qd7+-) 23...Qd7 (23...f4 24.ef4 Nf4 25.Bc5+-) 24.Bd5 (24.Rb1!? Qe6+-) 24...cd5+/- 25.Qd3 (25.Qb5!? Qb5 26.ab5+/-) 25...Rc1+= 26.Rc1 Rc8? (26...Qa4 27.Bd6+=) 27.Rb1 (27.Rc8 Qc8 28.Qb5 Qd8+-) 27...Rc4?? (27...Qa4 28.Bc5+=) 28.Qf1?? (better 28.Rb8 Rc8 29.Qb5+-) 28...Bf6 (28...h6 29.Bc5+=) 29.Bc5 (29.Rb8 Kg7+/-) 29...Ra4 30.Rb6 Bd8 (30...Be7 31.Be7 Qe7 32.Rb5=) 31.Rd6+/- Qc7 32.h3 (32.Rd5 Bf6+/-) 32...Rc4 (32...Be7 33.Rd5 Qc6+/-) 33.Re6?? (better 33.Rd5 Ra4 34.Bd6+-) 33...Qd7 34.Ra6 a4 (34...Qb7 35.Re6 Kg7 36.g3=) 35.Qa1 (better 35.Rd6!? Qe8 36.Rd5+/-) 35...Bc7= 36.Ra7 Qc6 37.Ra8?? (37.Qb2 Kg8=) 37...Kg7 (better 37...Qa8 38.Be7 Qa5-+) 38.Ra7= Kh6 (38...Kg8 39.Qb2=) 39.g3 (better 39.Qa3+/-) 39...Bb6?? (better 39...Kg7=) 40.Kg2 (40.Bf8 Kg5 41.Rf7 Rc1 42.Kg2 Qd7 43.f4 Kh5 44.Qc1 g5 45.Rf6 Qe6 46.Qd1 g4 47.hg4 fg4 48.Qh1) 40...Ba7?? (40...Rc5 41.Ra4 Rb5 42.Qd1-+) 41.Ba7?? (better 41.Bf8 Kg5 42.Be7 Kh6 43.Bf8 Kg5 44.Be7 Kh6 45.Bf8=) 41...Qa6 (41...Rc2 42.Bc5 Qe8 43.Qd1 Qe4 44.Kg1-+) 42.Bc5 Qb5?? (42...Kg7-+) 43.Qa3?? (better 43.Bf8 Kg5 44.Be7 Kh6 45.Bf8 Kg5 46.Be7 Kh6 47.Bf8=) 43...Rc2?? (better 43...Qb1-+) 44.Bf8 (44.Bf8 Kh5 45.Qe7 Qf1 46.Kf1 Rc1 47.Kg2 Rg1 48.Kg1 a3 49.Qh4) 1-0. frate_ali (1770) - kierkegaurdia (2010), Rated Bullet game, lichess.org, 2014.

5.e3 Bg7 6.Nf3 0-0 7.Be2 e5 8.0-0 Nbd7 9.c4 Re8 10.d3 (10.d4 ed4 11.Nd4 Ne4=) 10...Nc5 (10...e4 11.de4 Ne4 12.Bg7 Kg7 13.Nd4=) 11.Nbd2 (11.Nc3 Bg4=) 11...e4 (11...Bf5 12.e4 Be6 13.Nb3=) 12.de4 Nfe4 13.Qc1 (13.Bg7 Kg7 14.Ne4 Ne4=) 13...Nd2= 14.Nd2 (worse is 14.Qd2 Nb3 15.Qd1 Na1 (15...Bb2?! 16.Rb1=) 16.Qa1 Bb2 17.Qb2 b6–/+) 14...Bf5 15.Ra3 (15.Bg7 Kg7 16.Nb3 Nb3 17.Qc3 Kg8 18.Qb3 Be4=) 15...Qg5 (15...Bf6 16.Bf3=) 16.Nf3 Qe7 (16...Bb2 17.Qb2 Qe7 18.Rd1=) 17.Nd4 (17.Bg7 Kg7 18.Nd4 Qe5=) 17...Qd7 (17...Qf6 18.Rd1=) 18.Rd1 (18.Nb3 Bb2 19.Qb2 Nb3 20.Rb3 Be4+=) 18…h5 (18...Bg4 19.Nf3=) ½–½. Pfeiffer – Hochgraefe, corr DDR–H–46, 1967.

5.e3 Bg7 6.Nf3 0-0 7.Be2 e5 8.0-0 Re8 9.c4 b6 10.d4 ed4 11.ed4 Bf5 12.c5 (better is 12.Nc3!?+=) 12...dc5+= 13.dc5 bc5 14.Qd8 Rd8 15.Nh4 Be4 16.Nc3 Bb7 17.Bf3 Bf3 18.Nf3 Nbd7 19.Rac1 Nb6 20.Ne5 Rd2 21.Ba3 (better is 21.Ba1!?+=) 21...Nfd5–+ 22.Nd5 Rd5 23.Nc6 Bf6 24.Rc5 Rc5 25.Bc5 Na4 26.Ba3? (better is 26.Be7 Kg7 27.Bf6 Kf6 28.Ra1–/+) 26...Nc3–+ 27.Bb2? (27.Re1 Nb5 28.Be7 Be7 29.Ne7 Kg7 30.Re5–+) 27...Ne2 28.Kh1 Bb2 29.Re1 (29.Ne7 Kf8 30.Nd5 Rb8 31.Nc7 a4–+) 29...Nd4 (better is 29...Re8!? 30.Rf1 a4 31.Na5–+) 30.Ne7 Kg7 0–1. vihavald (1615) – fixedeye (1630), kurnik, 2012.

5.Bf6 ef6 6.e3 d5 =.

5.e3 Bb7 6.Nf3 Nbd7 7.Nc3 e6 8.d4 Be7 9.Be2 0-0 10.0-0 e5 11.d5 Nc5 12.Na4 Na4 13.Qa4 Nd7 14.Qc2 Nc5 15.Nd2 f5 16.Nb3 Nb3 17.ab3 Qd7 18.b4 ab4 19.Ra8 (19.Qb3 Bf6+=) 19...Ra8 20.Qb3 g5 (20...Bf6 21.Qb4 Qf7 22.Ra1+=) 21.Qb4 g4 (21...Bf6 22.Bd3+=) 22.Bd3 Bg5 23.Qc3 h5? (23...f4 24.ef4 Bf4 25.g3+=) 24.Qc2 (24.f4!? Bf6+-) 24...Bc8+/- 25.f4 gf3 26.Rf3 e4? (26...f4!?+/-) 27.Rg3 (27.Be4!? Qh7 28.Bd3 Qh6 29.Bf5 Bf5 30.Qf5 Rf8 31.Qf8 Qf8 32.Rf8 Kf8+-) 27...Qe7 28.Qc3 (better 28.Be2 Kh7 29.Qc3+- (29.Bh5?! Bd7+-)) 28...Kh7?? (better 28...ed3 29.Qh8 Kf7+/-) 29.Qh8 Kg6 30.Be2 Bb7 (30...Ra1 31.Ba1 f4 32.Qh5 Kf5 33.Bg4) 31.Bh5 (31.Qh5) 1-0. carlos78 (2020) - Mohsenabutalebi (2045), Rated Blitz game, lichess.org, 2014.

5.Nf3 Bb7 (5...e5 6.d4 e4 7.Nfd2=) 6.e3 (6.Bf6 ef6 7.Nc3 Nd7+=) 6...e6 (6...e5 7.Be2=) 7.Nc3 Be7 8.Be2 0-0 9.0-0 Nbd7 10.d4 e5 (10...c6 11.bc6 Bc6 12.Bd3=) 11.Qc2+= ed4 12.Nd4 Nc5 13.Bf3 Qd7 (13...Bf3 14.Nf3 Re8 15.Nd4+=) 14.Nc6 (14.Bb7 Nb7 15.Nf5 Nc5+/-) 14...Rfe8 (14...Qe6 15.Ne2+/-) 15.Nd5 (15.Na4 Bd8 16.Nc5 bc5+/-) 15...Nd5 16.Bd5 (16.cd5 Bc6 17.bc6 Qd8+=) 16...Bf6 (16...Qg4!?+=) 17.Bf6+/- gf6 18.a4 Qg4 19.Ra3 Rac8 20.e4 Kh8 21.Bf7 Bc6= 22.bc6 Re7 23.Bd5+/- Rce8 24.Rg3 Qf4 25.Rf3 Qh6 26.Rh3 Qf8 27.Re1 f5+= 28.Rf3 Qf6= 29.g4 Qg7=+ 30.Rf5 Qg4–+ 31.Kh1 Rg7 32.e5 Reg8! 33.Qd1 Qf5 34.Bg8 Nd3 35.Rf1 Rg8 36.f4 de5 37.Rf3 Nf4 38.c5 Qe4 (39.cb6 Nh3 40.Qf1 Qf3 41.Qf3 Rg1) 0–1. Teichgraber,Gerhard – Squarcialupi,D, corr ITA, 1969.

5.a4 cb5 6.ab5 Bf5 7.e3 Bb1 8.Rb1 g6 (8...e5 9.d4=) 9.d4 (9.Qf3 d5+/-) 9...Bg7 10.Nf3 Nbd7 11.Bd3 Rc8 12.0-0 0-0 13.Qe2 e5 (13...Qc7!?+/-) 14.de5 de5 15.Ne5 Ne5 16.Be5 Qe7 17.Bd4 Nd7 18.Bg7 Kg7 19.Qf3 (19.Ra1 Rfd8+/-) 19...b6 (19...Ne5!? 20.Qd1 Rfd8=) 20.Rbc1+= Ne5 21.Qe2 Rfd8 22.Rfd1 Qa3 23.Be4 Rd1 24.Qd1 (24.Rd1?! Rc4 25.Bd5 Rc1=) 24...Qb2 (24...Nc4!? 25.Bd5 Nd6 26.Rc8 Nc8+=) 25.Bd5+/- f5 (25...Nd3 26.Rc2 Qb4+/-) 26.f4 (better is 26.Rb1!? Qa3 27.Qd4+-) 26...Ng4+= 27.Qd4 Qd4 28.ed4 Ne3? (better is 28...Rd8!?+=) 29.Be6 Re8 30.Bd7?? (30.d5 h6 31.h3+-) 30...Re7?? (better is 30...Rd8 31.Bc6 Rd4+=) 31.Bc6+- Ng4 32.c5 bc5 33.dc5 Re2 34.b6 Rb2 35.b7 Nf6 36.Bf3 Ne4 37.c6 a4 38.c7 a3 39.c8Q a2 40.b8Q Rb8 41.Qb8 h5 42.Qe5 Kh6 43.Ra1 g5 44.Be4 fe4 45.Qg5 Kh7 46.Ra2 (46.Ra2 Kh8 47.Ra7 e3 48.Qd8; 46.f5 e3 47.f6 e2 48.Qg7) 1-0. marvis (1620) - f2023 (1645), playok.com, 2013.

5.a4 d5 6.e3 e5 7.Be5 dc4 (7...Nbd7 8.Bd4 Bb4+=) 8.bc6 (better 8.Bc4 cb5 9.Bb5 Nc6 10.Nf3+/-) 8...Nc6= 9.Bf6 (9.Nf3 Be6=) 9...Qf6=+ (worse 9...gf6 10.Bc4 Ne5 11.Bb5 Bd7 12.Nc3+/-) 10.Nc3 Be6 11.Nf3 Nb4 (11...Bb4 12.Qc2=+) 12.Rb1 (12.Nd4 Rc8=) 12...Bd6 (12...Rd8 13.Be2=) 13.Be2 (13.Ne4 Qe7=) 13...0-0=+ 14.0-0 Rfd8 15.Nd4 Bc8 (better 15...Be5!? 16.Ncb5 Bd5=) 16.Bc4+/- Bh2?? (better 16...Be5 17.Ncb5 Nc6+/-) 17.Kh2+- Qh4 (17...Bf5 18.Nf5 Qf5 19.Kg1+-) 18.Kg1 Rd6 19.Nf3 (19.Qf3 Rf6 20.Qg3 Rh6 21.Qh4 Rh4+-) 19...Qh5?? (better 19...Qc4 20.Nd4 Bd7=) 20.Ne4+- Rd8 (20...Rh6 21.Ng3 Qc5 22.Qb3+-) 21.Ng3 (better 21.Qb3 Nc6 22.Qc3 Qg6+-) 21...Qg4 (21...Qc5 22.Qb3 Qe7 23.Rbc1+-) 22.Nd4 (better 22.Bf7 Kf8 23.d4 Ra6+-) 22...Qh4 (22...Qd1 23.Rfd1 Bd7+-) 23.Nb5 (better 23.Qf3!? Qf6 24.Qf6 gf6+-) 23...Bg4?? (better 23...Qc4 24.Rc1 Qh4=) 24.Be2+- h5 (24...Be2 25.Qe2 Rac8 26.Rfc1+-) 25.Bg4 hg4 26.d4 Rd5 (26...Ra6 27.Nf5 Qg5+-) 27.Nc7 Rad8 (27...Rdd8 28.Na8 Ra8 29.Rc1+-) 28.Nd5 Rd5 29.Qb3 (better 29.Rc1 g6+-) 29...Rd6 (29...Qd8 30.Qc4+-) 30.Rbc1 (better 30.Nf5 Qf6 31.Nd6 Qd6+-) 30...Rh6 (30...Qd8+-) 31.Rc8 Kh7 32.Qb1 g6 33.f3 (better 33.Rfc1 Kg7 34.Qe4+-) 33...Qg3+/- 34.fg4 (better 34.Qb3 Qh2 35.Kf2+/-) 34...Rh2?? (better 34...Qe3 35.Rf2 Nd3 36.Qd3 Rh1 (36...Qd3?? 37.Rf7) 37.Kh1 Qd3=) 35.Rf2 (35.Rf7 Kh6 36.Rh8 Kg5 37.Rf5 Kg4 38.Qe4 Qf4 39.Qf4) 35...Rh6 (35...Qe3 36.Kh2 Qf2+-) 36.Rh8 (36.Rf7) 36...Kh8-+ 37.Qe4 Kg7 38.Qg6 (38.Qb7 Rh1!! 39.Kh1 Qf2 40.Qf3 Qf3 41.gf3-+) 38...Rg6 39.e4 (39.g5 Rc6 40.Rf6 Rc2 41.Rf7 Kf7 42.g6 Kg6 43.d5 Qg2) 39...Rg4 40.e5 (40.Re2 Qd3 41.Rf2 Qd1 42.Rf1 Qd4 43.Rf2 Nd3 44.g3 Rg3 45.Kh2 Qf2 46.Kh1 Rh3) 40...Qe3 41.e6 (41.e6 Nd3 42.ef7 Qf2 43.Kh2 Qg2; 41.Kh1 Qf2 42.g3 Rd4 43.e6 Rd1). GM_HUSARZ (2005) - jupeq (1985), Rated Bullet game, lichess.org, 2015.

5.a4 e5 6.e3 Be6 7.Nf3 Nbd7 8.Ng5 Qb6 (8...Bf5 9.d4=) 9.Ne6+= fe6 10.Nc3 Be7 11.Be2 0-0 12.0-0 Nc5 (12...d5 13.bc6 bc6 14.Rb1=) 13.d4+= ed4 14.ed4 Nce4 15.Ne4 Ne4 16.f3 Ng5 17.Kh1 cb5 (17...Bf6 18.Bd3+=) 18.cb5 (18.ab5 Bf6 19.Ra4+=) 18...e5 (better is 18...d5!?=) 19.de5+/- de5 20.Be5 Qe6 21.Bg3 Rad8 22.Qe1 Bc5 23.Rc1+/- Qe3?? 24.Bc4 Kh8 25.Qe3 Be3 26.Rcd1 Rd1 27.Rd1 b6? 28.Bb3 Rc8?? 29.h4 Nf3 30.gf3 Rc1 31.Rc1 Bc1 32.Kg2 Be3 33.Bf2 g6 34.Be3 g5 35.Bg5 h6 36.Bh6 Kh7 37.Be3 Kh8 38.Bb6 Kh7 39.Ba5 Kh8 40.Bc3+– Kh7 41.b6 Kh6 42.b7 Kh5 43.b8Q Kh4 44.Qg3 Kh5 45.Bf7 Kh6 46.Qg6 1–0. Fournier,Frederic (1690) – markymark (1685), Active (2/1), 2005.

5.Nf3 cb5 6.cb5 Bd7 7.e3 e5 8.Be2 Be7 9.0-0 Be6 10.Ng5 0-0 (10...Bd5 11.Nc3+=) 11.Ne6 fe6 12.Qb3 Nd5 13.Bf3 Qb6 (13...a4 14.Qc4+=) 14.Bd5+/- ed5 15.Qd5 Kh8 (15...Rf7 16.e4+/-) 16.a4 (16.d4 Nd7+-) 16...Nd7+/- 17.Na3 (17.Qe6 Qd8+/-) 17...Nf6+= 18.Qb3 Qd8 19.Nc4 b6 20.d4 e4 21.Rfc1 d5 22.Ne5 Bd6 (22...Rc8 23.Ba3 Rc7 24.Nc6 Ba3 25.Nd8 (25.Ra3?! Ng4+=; 25.Qa3?! Qe8+/-) 25...Bc1 26.Ne6+-) 23.f3 (23.Ba3 Ba3 24.Ra3 Rc8+/-) 23...Rc8 (23...ef3 24.gf3 Rc8 25.Rc6+/-) 24.fe4 Ne4? 25.Rc8 Qc8 26.Qd5 Qf5 27.Qc4?? Qf2-+ 28.Kh1 Qb2 29.Rf1 Nf2 30.Kg1 Be5 31.de5 Qd2 32.Qc1?? Qc1 33.Rc1-/+ Ne4 34.e6 Nc5 35.e7 Re8 36.Rd1 h6?? 37.Rd8+- (37...Kg8 38.Re8 Kf7 39.Rg8 Ke7 40.Rg7 Kf6 41.Rg4+-) 1-0. Dopper,Johan - Verduyn Den Boer, 1991.

5.e3 Be7 6.Nc3 Be6 7.d4 ed4 8.Qd4 (8.ed4 0-0+=) 8...Nbd7 (8...a4 9.Nf3=) 9.Nf3 Nc5 10.Be2 0-0 11.0-0 b6 (11...a4 12.Ba3=) 12.Rad1 Qd7 13.Nd5 Rfe8 (13...h6 14.h3=) 14.Ne7 (14.Ng5+=) 14...Re7? (14...Qe7 15.Ng5=) 15.Ng5 (better 15.Qh4!?+–) 15...Bf5 (15...Bg4 16.Qd2=) 16.Bf3 Ne6?? (better 16...Nce4=) 17.Ne6+– fe6 18.Ba8 e5 19.Qd2 h6 (19...Qc8 20.Bc6+–) 20.a4 (20.f4!? e4+–) 20...Qe8 21.Bc6 Qg6 (21...Bd7 22.Bb7+–) 22.f3 (22.f4 Nd7+–) 22...Kh8 (22...Bd7 23.Bd5 Kh7 24.f4+–) 23.e4 (better 23.c5 bc5 24.Qa5 Qg5+–) 23...Bc8 (23...Bd7 24.Bb7+–) 24.f4 Bg4 (24...Ne4 25.Be4 Qe4 26.fe5+–) 25.Rde1 (25.fe5!? Re5 26.Be5 de5 27.Qd8 Kh7+–) 25...Qf7 (25...Kh7 26.h3! Bc8 27.fe5 de5 28.Rf3+–) 26.fe5 de5 27.h3 Bh5 (27...Bd7 28.Rf6! gf6 29.Qh6 Kg8 30.Bd5+–) 28.Rf5 (28.Qd8 Kh7 29.Rf5 Re6 30.Be5 Bg6 31.Rf6 gf6 32.Bc7 Qg7 33.Bb6 Re5 34.Ba5 Bh5+–) 28...Bg6 (28...Kh7 29.Qd8 Re6 30.Be5+–) 29.Re5 (29.Qd8 Kh7 30.Re5 Re5 31.Be5 Qc4+–) 29...Kh7 (29...Re5 30.Be5 Qe7 31.Qf4+–) 30.Re7 Qe7 31.e5 Nh5 (31...Ne8 32.Rf1 h5 33.Qd5+–) 32.e6 Ng3 33.Qd7 (33.Qd7 Nf5 34.Be4 Qc5 35.Kh1+–) 1–0. samyaksamadhi – blackfox, net–chess.com, 2019.

5.e3 Be7 6.Nf3 e4 7.Nd4 c5 8.Ne2 0-0 (8...Nbd7 9.Ng3+=) 9.Nbc3 d5 (9...Be6 10.Nf4+=) 10.Nd5+= Nd5 11.cd5 Qd5 (11...Nd7 12.Qc2 Bf6 13.Nc3+=) 12.Qc2+– Rd8 (12...Nd7 13.Nc3 Qf5 14.Qe4 Qe4 15.Ne4+–) 13.Nc3 Qd6 (13...Qf5!? 14.Ne4 Be6+–) 14.Ne4+– Qg6 15.Bd3 Rd3 16.Qd3 Bf5 17.f3 Qg2 (17...Nd7 18.0-0+–) 18.0-0-0 Qf3 19.Qc3 f6 20.Qc4 Kf8 21.Ng5!! Qh5 (21...fg5 22.Rhf1 Combination) 22.Qd5 Qg5 23.Rhf1 1–0. forsetinn (2375) – cachisss (1910), gameknot.com, 2015.

5.e3 Bf5 6.c4 e6 7.c5 Be7 (7...b6 8.c6=) 8.Bd3 Bd3 9.Qd3 0-0 (9...e5 10.de5 Ne4 11.Nc3 Nc5 12.Qc2=) 10.Nf3 Ne4 11.0-0 Nd7 12.Nc3 Ndf6 13.Nd2 (13.Ne5 Nc3 14.Bc3 Nd7+=) 13...Nd2 14.Qd2 b6 15.Ba3 Rc8 16.Na4 Ne4 17.Qd3 f5 (17...bc5 18.Nc5 Rb8 19.Rab1 Bc5 20.Bc5 Nc5 21.dc5+=) 18.f3+/- Nf6 19.Rac1 Nd7 20.Rc2 c6 (20...Rf7 21.Rfc1 Qf8 22.Rc3+=) 21.Rfc1 (21.cb6!? Ba3 22.bc6 Nb6 23.Nb6 (< 23.Qa3 Nc4 24.Qc1 Rc6=) 23...Qb6 24.Qa3 Rc6 25.Rc6 Qc6 26.Qa5+/-) 21...cb5= 22.Qb5 bc5 (22...f4 23.e4 de4 24.fe4 bc5 25.Qa6=) 23.dc5 (23.Nc5 Bc5 24.dc5 Nf6+=) 23...Re8 (better is 23...Rb8!? 24.Qc6 Kf7=) 24.c6+/- Ne5 25.Be7 Re7? 26.Nb6 Rcc7+/- 27.e4 fe4 28.fe4 Nc4 29.Nc4+– dc4 30.Qc4 h6 31.h3 Re8 32.a4 Qd6 33.Qc5 Qc5 34.Rc5 Ra8 35.Rd1 Ra6 36.Rd6 Kf7 37.Kf2 Ke7 38.e5 Rb6 39.Ke3 Ra6 40.Kd4 Rb6 41.Rc4 Rb2 42.Kc5 Rb8 43.Rcd4 Rb1 44.Rd8 h5?? 45.h4 Rb2?? 46.R4d7+– Rd7 47.Rd7 Ke8 48.Rg7 Kd8 49.g4 hg4 50.Rg4 Rh2 51.Rg8 Kc7 52.Rg7 Kc8 53.Rh7 Rb2 54.h5 Kd8 55.Rd7 Kc8 56.h6 Rh2 57.h7 Rh1 58.Kb6 Rb1 59.Ka5 Rh1 60.Kb4 Rb1 61.Ka3 Ra1 62.Kb2 Rh1 63.a5 Rh3 64.Rg7 Rh2 65.Kc3 Rh3 66.Kc4 Rh4 67.Kc5 Kb8 68.a6 Rh1 69.c7 (69...Kc8 70.h8Q Rh8 71.a7 Kb7 72.c8Q Kc8 73.a8Q#) 1–0. Roczniak,Jan – Majewski,Jan, corr Poland, 1967.

5.Nf3 =.

5.e3 e5 6.de5 (6.Nd2 e4=) 6...de5 7.Nf3 Bd6 8.Bc4 (8.Be2 0-0=+) 8...Nb6 9.Nbd2 Qe7 10.0-0 Bg4 11.Be2 Rd8 12.h3 (12.Qc1 0-0=+) 12...Bf3 13.Bf3? Bb4?? 14.c3= Nc4 15.cb4 Nd2 16.ba5 e4–/+ 17.Bf6 Qf6–+ 18.Be4 Ne4 19.Qc2 Qe7 20.Rfc1 Rd7 21.a6 ba6–+ 22.ba6 0-0 23.Rab1? Rd2 24.Qc7 Qf6 25.Qf4=+ Qf4 26.ef4 Ra2 27.Rb6 h6 28.Rc7 Ra8–+ 29.f3 Nf6 30.Rbb7–/+ R2a6 31.Rf7 Ne8 32.Rfe7 Rf6 33.Rb4 Rf7 34.Re2 Nf6 35.g3 Nh5 36.Kf2–/+ Ra3 37.Rb5 g6 38.h4 Rfa7 39.f5 Rf7 40.g4 Nf4 41.Re8 Kg7 42.Kg3 Ra4 43.Re4=+ ½–½. Diener,Rudolf – Schwarz,Hans, corr DDR, 1985.

5.e3 g6 6.Nf3 Bg7 7.c4 0-0 8.Be2 e5 9.Nc3 Re8 10.0-0 e4 11.Nd2 Nf8 12.Qc2 Bf5 13.h3 h5 14.a4 Ne6 15.Nd5 (15.Rfe1 c5 16.d5 Ng5+=) 15...c6 (15...Nd5 16.cd5 Nd4 17.Bd4 Bd4 18.ed4 e3+=) 16.Nf6+= Qf6 17.Rfb1 Qh4 18.bc6 bc6 19.Nb3 Qg5 20.Kh1 Qh4 21.Bf1 Bh3 (better is 21...Reb8!?+=) 22.gh3+/- Ng5 23.Qe2 Re6 24.Bg2 Rf6 25.Kg1 Nh3 26.Bh3 Qh3 27.Nd2 Re8 28.Qf1 Qh4 29.Qe2 (29.Qg2!?+=) 29...Rf5 30.Nf1 Rf3 31.Qe1 Re6 (31...Re6 32.Bc3 Qg5 33.Kh1 Ref6=). Wolf – Tiemann, Privatpartie, 1998.

5.Nf3 Nb6 =.

5.Nf3 g6 6.c4 Bg7 7.e3 0-0 8.Be2 b6 9.0-0 Bb7 10.Nbd2 e5 11.de5 de5 12.Ne5 Ne5 13.Be5 Qe7 14.Bb2 Rad8 15.Qc2 Rd7 16.Bf3 Rfd8 17.Rfd1 Rd2 18.Rd2 Rd2 19.Qd2 Bf3 20.gf3 h5 21.Rd1 Qe6 22.Qd8 Kh7 23.Qc7 Ne8 24.Qd7 Bb2 25.Qe6 fe6 26.Rd7 Kh6 27.Rb7 Nd6 28.Rb6 Nc4 29.Re6 Ne5 30.b6 Nf3 31.Kg2 Ng5 32.Rc6 Nf7 33.b7 Be5 34.Ra6 Bc7 35.Ra7 Nd6 36.Ra5 Ne8 37.Rb5 Bb8 38.a4 Nd6 39.Rb1 Kg7 40.a5 Kf7 41.a6 1–0. kaasparov (1635) – dinam0moskwa (1620), kurnik, 2013.

5.c4 e6 6.Nf3 h6 7.e3= Nbd7 8.Be2 b6 9.0-0+= Be7 10.Nbd2 d5 11.Rc1 0-0 12.a4 Bd6 13.Ne5 Ne4 14.f4 Ndf6 15.Nb3 Bb4 16.Bd3 Bd6 17.Qc2 Be5 18.fe5+/- Ng4 19.Rf3 Qh4 20.h3 Ng5 21.Rf5 Ne3=+ 22.Qe2 Nf5 23.Bf5 ef5 24.cd5 Rac8 25.Nd2 Rfe8 26.Rc6 Qg3 27.Kf1 f4 28.Rc3 Qh2 29.Qg4 f3 30.Nf3–/+ Nf3 31.Rf3 Qh1 32.Kf2 Qb1 33.Ba3 Qa2 34.Kg1 Qd5 35.Rc3 Rcd8 36.Rc7 Qd4 37.Qd4 Rd4 38.Bd6 f6 39.Rc6? fe5 40.Rb6 e4 41.Ra6 e3 42.Bg3 Ra4 43.Be1 Ra1 44.Kf1 e2 45.Kf2 Rf8 46.Ke2 Re8 47.Kd3 Rae1 48.Ra5 Rb1 49.Kd4 Rc8 50.Kd5 Rd1 51.Ke6 Re8 (52.Kf5 Rf1 53.Kg4 Re4 54.Kg3 Kf7–+) 0–1. Sundin,Thommy (1890) – Sandstroem,Samuel (1820), Soederhamn Sweden, 1988.

5.c4 g6 6.f3+= Bg7 7.e4 Bc8 8.Bd3 0-0 9.Ne2 Nbd7 10.0-0 e5 11.Nbc3 Re8 12.Nd5 c6 13.Nf6 Bf6 14.d5 cb5 15.cb5 Nc5 16.a4 Bg5 17.g4 Be3 18.Kg2= h5 19.h3 Bd7 20.Bc2 Rc8 21.Ra3 Bh6 22.Rc3 Qh4 23.Bc1 Bc1 24.Qc1 Kg7 25.Qe1 Qe1 26.Re1 Kh6 27.Rh1 Rf8 28.Ng3 Ne6=+ 29.Rc8 Nf4 30.Kg1 Rc8–/+ 31.Bd1 Rc1 32.Kh2 h4 33.Ne2 Ne2 34.Be2 Rc2 35.Re1 Ra2 36.Kg1 Ra4 37.Rc1 Rb4 38.Rc7 Bb5 (39.Bb5 Rb5 40.Rf7 a4–+) 0–1. Welti,Manfred (2090) – Ribelles Sala,Maria Magdalena (2200), corr Coppa Latina–6 bd09, 2003.

5.c4 g6 6.Nf3 Bg7 7.Nc3 0-0 8.e3 c5 9.Be2 Nbd7 10.0-0 Qc7 11.Nh4+/- Nb6 12.Nf5 gf5 13.Qd3 e6 14.f4 Rfd8 15.Rf3 Kf8 16.d5+= Ne4 17.Rh3 h6 18.Rb1 ed5 19.Nd5+/- Nd5 20.Qd5 Qd7 21.Rh5 (21...Bb2 22.Rb2+=; better is 21.Bf3+/-) 1–0. Becher – Lehmann, corr, 1972.

5.Nf3 e6 =.

5.c4 e5 (--> 4.e3 e5 5.c4 b6).

5.Nf3 Bb7 6.c4 c6 7.Be2 e5 8.0-0 Be7 9.a4 0-0 10.d3 h6 11.Nbd2 cb5 12.cb5 e4? (better is 12...Nbd7!?=) 13.de4+/- Ne4?? (better is 13...Nbd7+/-) 14.Ne4+– Be4 15.Nd2 (better is 15.Qd4 Bf6 16.Qe4+–) 15...Bb7 16.Bf3 d5 17.Nb3 Bb4 18.Nd4 Qf6 19.Rb1 Qg6 20.Bh5 Qg5 21.Bf3 Nd7 22.Nc6+/- Bc6 23.bc6 Nf6 24.Bf6+– Qf6 25.Qd5 Rfd8 26.Qe4 Rac8 27.Rfd1 Re8 28.Qd4 Bc5 29.Qc4 Rc7 30.Rd3 Rc6 31.Bc6 Qc6 32.Rbd1 Rf8 33.Qb5 Qb5+/- 34.ab5 a4 35.Kf1 a3 36.R3d2 Ra8 37.Ra2 Ra5 38.Rb1 Kf8 39.Ke2 Ke7 40.Kd3 Kd6 41.Kc4 Ra4 42.Kc3 Ke5 43.g3 g5 44.f4 Ke4 45.fg5 hg5 46.Rf1 f5 47.h4 gh4? 48.gh4?? Ke3 49.h5 Rh4 50.Rf5+– Ke4 51.Rc5! bc5 52.Ra3?? Rh5?? 53.Kc4+– Ke5 54.Kc5 Ke6 55.Kb6 Kd7 56.Rc3 Kd8 57.Ka6 Rh1 58.b6 Kd7 59.Kb7 Rb1 60.Rc7 Kd8 61.Rh7 Rc1 62.Ka7 Ra1 63.Kb8 Rb1 64.b7 Rc1 65.Rh8 Kd7 66.Rh7 Kd8 67.Rh8 Kd7 68.Rh7 Kd8= ½–½. ourang – sabitrexhepi, kurnik, 2012.

5.Bf6 ef6 6.Qf3 Ra7 +=.

5.a4 b6 6.c4 Bb7 7.Nf3 e5 8.Be2 Be7 9.d4 ed4 10.ed4 0-0 11.0-0 Ne4 12.Nc3 Nd7 13.dc5 (13.Ne4 Be4 14.Re1 Bf6+=) 13...Ndc5 14.Nd5 Bf6 15.Nf6 Nf6 16.Nd4 Re8 17.Bf3 Bf3 18.Qf3 Qd7 (18...Nfd7 19.Nc6 Qh4 20.Rfd1+=) 19.Nc6 (19.Nf5 Qe6 20.Ng7 Kg7 21.Rae1+–) 19...Re6? (19...Nfe4 20.Rfe1+=) 20.Rfe1?? (better 20.Bf6 Rf6 21.Ne7 Qe7 22.Qa8 Qf8 23.Qc6+–) 20...Rae8= Do you see the mate threat? 21.Re6 White fights for the Initiative 21...Qe6 22.h3 White gets strong play along the open c–file 22...Qc4 (22...Nfd7!?=) 23.Bf6+= gf6 24.Qf6 Qd3? (better 24...Ne4 25.Qh4 d5+=) 25.Ne7+– Re7 26.Qe7 Ne6 27.Rc1 Kg7 28.Qh4 Kf8 (28...Nc5 29.Qg5 Qg6 30.Qd8+–) 29.Rc8 Kg7 30.Qg3 (better 30.Rc6+–) 30...Qg3 31.fg3 Nc5 32.Rc6 Na4 33.Rd6 Kf8 (33...f6 34.g4+–) 34.Kf2 Ke7 35.Rc6 Kd7 (35...Kf8 36.g4+–) 36.Rh6 Nc3 (36...Ke7 37.g4+–) 37.Rh7 (37.Rb6 a4+–) 37...Nb5 (37...Ke7 38.Rh6 f6 39.Rh8+–) 38.Rf7 Kc6 39.Rf6 (39.g4 Nd6 40.Rf8 Kd7+–) 39...Kb7 (39...Nd6 40.g4 Kc5 41.Rf4+–) 40.Rf5 (40.Rf4 Nc3+–) 40...Nd4 (40...Kc6+–) 41.Rf7 Ka6 42.Ke3 (42.h4 Ne6+–) 42...Nc6 43.h4 Nb4 (43...a4+–) 44.h5 a4 45.h6 a3 46.Rf8 (46.h7 a2 47.h8Q Nd5 48.Kd3 Ne3 49.Rc7 Nd5 50.Qa8 Kb5 51.Qc6 Kb4 52.Qc4 Ka3 53.Ra7 Kb2 54.Ra2 Kb1 55.Qc2) 46...Nd5 (46...a2 47.h7 Nc2 48.Ke4+–) 47.Kd4 (47.Ke4 Ne7 48.h7 Ng6 49.Ra8 Kb7+–) 47…Nc7 (47...Nc7 48.h7 Ne6 49.Kc4 Nf8+–; 47...Ne7 48.h7 Ng6 49.Kc3 Nf8 50.h8Q+–). RichardSommer (2110) – NewPixelCL3 (2095), lichess.org, 2020.

5.Nf3 e5 6.d3 b6 7.c4 Be7 8.Nc3 (8.Be2 0-0=) 8...0-0 9.Be2 Bb7 10.0-0 Nbd7 (10...Re8 11.d4 cd4 12.ed4=) 11.Qc2 (11.Nd2 Qc7=) 11...Ne8 (11...Qc7 12.a3=) 12.d4 f5 13.de5 de5 14.Nd5 e4 15.Ne7 Qe7 16.Ne1 Nd6 17.Qc3 Rf6 18.Rd1 Re8 (18...Rd8 19.Nc2=) 19.Bh5 (19.Nc2 Qe6=) 19...Rd8= 20.a4 Rh6 21.Be2 Rf8 22.Nc2 Rg6 23.Rd2 Qg5 24.g3 f4 (24...Rd8!?+=) 25.ef4+/- Rf4 26.Rfd1 Rff6 27.Qe3 Re6 28.Qg5 (28...Rg5 29.Rd6 Rd6 30.Rd6+–) 1–0. Woschkat,Karl_Heinz – Andre,Karl, corr SOK–91–71, 1991.

5.Nf3 e5 6.d3 Be7 7.c4 0-0 8.Nc3 b6 9.Be2 Bb7 10.0-0 Nbd7 11.Qc2 Qc7 12.Nh4 (12.e4 Rfe8+=) 12...d5 (12...Rae8 13.Bf3+=) 13.Nf5 Rae8 14.e4 (14.cd5 Nd5 15.f4 A) worse is 15...ef4 16.Nd5 (worse is 16.Ne7 Ne7 17.ef4 Nf5+=) 16...Bd5 17.e4+/- (17.Rf4?! Bf6=); B) 15...Bf6=) 14...d4 15.Na4 Bd8 (15...Bc8 16.Qd2=) 16.Bc1 Re6 (16...Bc8 17.Qd2=) 17.Bd2 Rfe8 18.a3 Nf8 (18...Be7 19.Ne7 R8e7 20.f4=) 19.f4 N6d7 (19...N8d7 20.fe5 Ne5 21.Rf2=) 20.Ng3 ef4 (20...Be7 21.Bg4 Rf6 22.Nf5=) 21.Bf4+= Ne5 22.Bg4 Rf6 23.Nf5 Bc8 24.Qd2 Nfg6 25.Bg3 Qb7 26.Bh3 Bf5 27.ef5 Nf8 28.Rae1 Nfd7 29.Re4 Bc7 30.Bf4 h6 31.Nb2 Bd6 32.Rfe1 Qc7 33.Qe2 g6 34.fg6+– Rf4 35.Rf4 Nf3 36.Rf3 Re2 37.gf7 Kf8 38.Re2 Bh2 39.Kh1 Ne5+/- 40.Rf5 Bg3 41.Bg4 Qd7 42.Re4 Ng4 43.Re8 Qe8 44.fe8Q Ke8 45.Rf3 Bc7 46.Nd1 Ne5 47.Rh3 Bd8 48.Kg1 Bg5 49.Nf2 a4 50.Kf1 Kf7 51.Ke2 Bc1 52.Rh1 Ba3 53.Ra1 Bb4 54.Ra4 Ba5 55.Ne4 Nd7 56.Ra1 Kg6 57.Rf1 Ne5 58.Rf8 Ng4 59.Ra8 1–0. Vassen,Jack – Wall,Bill, Carel CF–01 Correspondence, 2005.

5.Nf3 e5 6.a4 g6 (6...Be7 7.Be2=) 7.Be2 Bg7 8.c4 h6 (8...Bg4 9.d4+=) 9.0-0 g5 (9...Bg4 10.d4+=) 10.d3 (10.d4 g4 11.Nfd2 ed4 12.Bd4 0-0+=) 10...g4 11.Ne1 h5 12.g3 (12.f4!?+=) 12...h4= 13.Ng2 hg3 14.fg3 Be6 15.Nh4 Nbd7 16.Nd2 (16.Nf5 Bh6 17.Nh6 Rh6=) 16...Bh6 17.e4 (17.Ng2 c6=) 17...Bg5 (17...Nc5 18.Bc3+=) 18.Nf5= Bf5 19.Rf5 Be3 20.Kg2 Qe7 (20...Rg8 21.Nf1 Bc5 22.Bc1+=) 21.Nf1 Bb6 22.Bg4 Ng4 23.Qg4 0-0-0 24.Qf3 Rdg8 25.Rf7+/- Qh4 26.Qf5?? Qh6 27.Rd7 Kb8?? 28.Rf7 Qd2 29.Nd2 Rh2 30.Kh2 Rg3 31.Kg3 Bd4 32.Bd4 b6 33.Bb6! c5 34.Qd7 d5 35.Qb7 1–0. Fournier,Frederic (2020) – damaxzelix (1785), Active, 2004.

5.Nf3 g6 6.Be2 Bg7 7.0-0 0-0 8.c4 c6 9.a4 cb5 10.cb5 b6 11.d4 Be6 12.Nbd2 Nbd7 13.Rc1 Rc8 14.Rc8 Qc8 15.Qb1 Qb7 16.h3 Bf5 17.e4 (better is 17.Bd3 Bd3 18.Qd3=) 17...Ne4–/+ 18.Ne4 Be4 19.Qa1 Nf6 20.Rc1 Nd5 21.Nd2? (better is 21.Qa3–/+) 21...Nf6?? (better is 21...Bg2 22.Qa3 Nf4–+) 22.Bf3 (22.Nf3 Nh5 23.Rc3–/+) 22...Bf3 23.Nf3 Rc8 24.Rc8 Qc8 25.d5 Qc5 26.Bd4 Qc7 27.g4 Bf8 28.Bf6= ef6 29.Qf6 Qc1 30.Kg2 Qc5 31.h4 Bg7 32.Qd8= Bf8 33.Qa8 Kg7 34.Qc6 Qb4 35.Kg3 Qa4 36.Qb6+= (36.Qb6 Kg8 37.Qb7=) 1–0. ejdrzej (1630) – sanytramaz, kurnik, 2013.

5.Nf3 e5 6.Be2 Be7 7.0-0 0-0 8.d4 e4 9.Nfd2 d5 10.c4 dc4 11.Nc4 Nd5 12.Nbd2 f5 13.Rc1 a4 14.a3 N7f6 15.Qc2 Be6 16.f3 ef3 17.Rf3 Qe8 18.Bd3 g6 (worse is 18...Qb5 19.Bf5 Bf5 20.Qf5+/-) 19.Ne5 Bd6 (19...Ng4 20.Ng4 fg4 21.Rf8 Qf8 22.e4+/-) 20.Rcf1+= Rd8 21.h3 Qe7 22.e4 fe4 23.Ne4 Ne4 24.Be4 Rf3 25.Rf3 Qg5 26.Bc1+= Qh4 27.Kf1 Kg7 28.Nc4 Re8= 29.Nd6 cd6 30.Bd2 Bg8 31.g4 Qe7 32.Bd3 Rf8 33.Be4 Rf3 34.Bf3 Ne3 35.Be3 Qe3 36.Qc7 Kh8 37.Qb7 Qa3 38.b6 Qa1 39.Kg2 Qb2 40.Kg3 Qd4 41.Qc8 ½–½. Rosner,Dirk (2175) – Valverde,Mario (2055), CiF, 2006.

5.Nf3 g6 6.a4 Bg7 7.Bc4 0-0 8.0-0 c6 9.Nc3 Nb6 10.Bb3 Bd7 11.d4 (11.Qe2 Ne4=) 11...Nbd5 (11...cb5 12.Nb5 Bb5 13.ab5 a4=) 12.Qd2 (better 12.Nd5!? Nd5 13.Qe2+=) 12...Nc3=+ 13.Bc3 Ne4 14.Qd3 Nc3 15.Qc3 cb5 16.ab5 (16.Qd3 b4-/+) 16...Bb5 17.Rfe1 e6 18.Qb2 Bd7 (18...Bc6 19.Ba4-/+) 19.Qa3 (19.Ba4 Bc6-/+) 19...Qc7 (19...Bc6 20.c4-+) 20.Nd2 (20.c4!?-/+) 20...b5-+ 21.Rec1 d5 (21...b4 22.Qb2 a4 23.Bc4-+) 22.c3 Ra6 23.e4 (23.Bc2!? a4-+) 23...Qf4 24.Nf1 (24.Qb2 Bh6 25.Nf3 de4-+) 24...Qe4 25.Ng3 Qf4 26.Qe7 Bc8 (26...Ra7 27.Ne2 Qc7 28.Re1-+) 27.Ra2?? (27.Ne2 Qf6 28.Qc7-+) 27…Qc1 (27...Qc1 28.Nf1 Qc3-+) 0-1. ashera (1920) - retry (1965), gameknot.com, 2022.

5.Nf3 g6 6.d4 Bg7 7.c4 (7.Bd3 c5+=) 7...0-0= 8.Be2 e5 (8...c6 9.Nc3+=) 9.de5 (9.0-0 Qe7=) 9...Ng4 10.0-0 Nde5 11.Ne5 Ne5 12.Qc2 (12.Bd4 Be6=) 12...Be6 (12...Re8 13.b6=) 13.Nd2 f5 (13...Qh4 14.Be5 de5 15.Rad1=) 14.Rfd1 (14.Nf3 Qe7=) 14...Qe7 (14...f4 15.ef4 Rf4 16.c5=) 15.h3 (15.Nf3 a4=) 15...b6 (15...f4 16.e4=) 16.Rac1 (16.Nf3 Rad8=) 16...Rae8 (16...f4 17.e4=) 17.f4 (17.Nf3 f4 18.e4 Nf3 19.Bf3 Bb2 20.Qb2 Qg5=) 17...Nf7 (17...Nd7 18.Bg7 Qg7 19.Bf3=) 18.Qd3?? (better is 18.Bg7 Kg7 19.Bf3=) 18...Bb2-+ (19.Rc2 Bg7-+) 0-1. Hilton,Stephen - De Melo,Gerson Luis, WCCF, 2002.

5.Nf3 g6 6.Be2 Bg7 7.d4 0-0 8.0-0 e5 (8...c5 9.c4=) 9.c4 (9.de5 Ng4+=) 9...Re8= 10.Nc3 ed4 11.ed4 (11.Nd4 Nc5=) 11...Ne4 (11...d5 12.c5=) 12.Ne4+= Re4 13.Bd3 Re8 14.Qc2 Nf6 15.Rfe1 Re1 16.Re1 Bg4 17.Nd2 Qf8 (17...d5 18.c5+=) 18.Nf1 (18.Ne4 d5 19.Nf6 Bf6 20.cd5 Qd6+/-) 18...Re8 (18...d5 19.c5+=) 19.Re8 Qe8 20.Ne3 Bd7 21.Bc3 Ng4 22.Qe2 (22.Nd5 c6 23.Nc7 Qe7+=) 22...Ne3 23.fe3 b6 24.Qf3 Bh6 25.Kf2 Bg4 26.Qe4 Qe4 27.Be4 Kf8 28.c5 dc5 29.dc5 Bg7 30.Bd4 Bd4 31.ed4 Ke7 32.Kg3 Be2 33.Bc6 Bc4 34.a3 h6 ½-½. Nokka,Risto - Koskinen,Henri, Jyvaskyla, 1987.

5.Nf3 e4 6.Nd4 c5 7.bc6 Nc6 +=.

5.Bg2 Nbd7 6.c4 (6.Nf3 Be7=) 6...Nb6 (6...Be7 7.d4=) 7.d3 Be7 8.Nc3 (8.Nf3 0-0=) 8...0-0 9.a4 (9.Nf3 e4 10.Nd4 ed3 11.ed3 d5 12.cd5 Bc5+=) 9...Re8+= 10.e4 (10.Nf3 e4 11.Nd4 ed3 12.Qd3 Nfd7–/+) 10...c6 11.bc6 (11.Nf3 Bg4+=) 11...bc6 12.Nf3 Bg4 (12...Rb8 13.Rb1+=) 13.0-0 (13.h3 Be6+=) 13...Qd7 14.Qd2 h6 (14...Reb8 15.Rab1+=) 15.Rfe1 Nh7 (15...Reb8 16.Reb1+=) 16.Nd1 Ng5 (16...c5 17.Qc2+=) 17.Ng5 Bg5 18.f4 ef4 19.gf4 Bh4 20.Nf2 Bh5 (20...c5 21.Reb1 Bf2 22.Qf2 Na4 23.Bg7 Kg7 24.Qc2=) 21.Reb1+= Ra6 (21...Qc7 22.Qe3+=) 22.Bc3 Qa7 23.Rb3 (23.Qe3 Nd7 24.Qa7 Ra7+=) 23...d5 (23...Nd7 24.Rb2=) 24.Bd4 (24.ed5? Re2 25.Qe2 Be2–+; 24.cd5?! Nd5 25.d4 Nc3 26.Rc3 Be7=) 24...dc4 25.Rb2 (25.dc4 Nc4 26.Qc3 c5 27.Bg7 Nd6 28.Bh6 Bf2 29.Kf2 c4 30.Kf1 Nf5 31.Qc4 Rd6–/+) 25...Qc7 26.Be3 (26.Qc3 f6=) 26...Rd8 (26...Qd8 27.d4+=) 27.Qc2= Rd6 (better is 27...cd3!? 28.Nd3 Nd7=) 28.dc4+= Bf2 (28...Rd8 29.Rab1 c5 30.Rb5 Bf2 31.Kf2+/- (31.Bf2 Qf4 32.Bc5 Na4–+)) 29.Bf2 Nd7 (29...c5 30.Rab1+=) 30.e5 (30.Rab1 c5+/-) 30...Rg6 31.Rab1 (31.Qd3 c5+/-) 31...Bf3 32.Qg6! fg6 33.Rb7 Qb7 (33...Qc8!? 34.Bf3 Qe8+/-) 34.Rb7 Bg4 (34...Bg2 35.e6 (35.Rd7?! Bh3 36.Rd8 Kf7+/-) 35...Nf6 36.Rb8 Kh7 37.Kg2+–) 35.Rc7 Nf8 (35...g5 36.Bc6 Rc6 37.Rc6 gf4 38.Bd4+–) 36.Bc6 Ne6 (36...Kh7 37.Bb7 Re6 38.Bd5+–) 37.Rc8 Kh7 38.Bb7 (38.Bb7 Nf4 39.Ba6 Nh3 40.Kg2 Nf4 41.Kg3 Bc8 42.Bc8+–) 1–0. Hecht,Hans Joachim – Schaefer,H, corr, 1958.

5.Bg2 Be7 6.d4 e4 7.d5 =.

5.Bg2 g6 6.c4 Bg7 7.Nc3 Nbd7 8.Na4 0-0 9.Qc2 Re8 10.e3 Nh5 11.Ne2 f5 12.0-0 e4 13.Bg7 Ng7 14.f3 ef3 15.Bf3 Ne6 16.Bd5 Kg7 17.e4 fe4 18.Qe4 Nf6 19.Qg2 Nd5 20.Qd5 Qg5 21.Nf4 (21.Nf4 Nf4 22.Qd4 (22.Qg5?? Nh3 23.Kh1 Ng5–+) 22...Qe5 23.Qf4+=). Lielmezs,Girts – Tamashiro,Ariel, IECG, 2003.

5.e3 b6 6.Nf3+= e6 7.Nc3 Bb7 8.Be2 g6 9.Qc2 c5 10.0-0 Qc7 11.Rfd1 h6 12.d4 Rh7 13.d5+/- ed5 14.Nd5 Nd5 15.cd5 Bg7 16.Qe4 Kf8 17.Rab1 Nf6 18.Qh4 Nd5 19.Bc4 Nc3 20.Ng5 Kg8? 21.Bf7+– Kh8 22.Nh7 Kh7 23.Bc3 Bc3 24.Qc4 Be5 25.Bd5 Rd8 26.a4 Bc8 27.f4 Bf6 28.Be6 Kg7 29.Rd3 Bb7 30.Bd5 Bc8 31.Rbd1 Qe7 32.Qe4 Bf5 33.Qe7 Be7 34.e4 Bg4 35.R1d2 Rf8 36.g3 Bf6 37.Kg2 Bd4 38.Rd4 cd4 39.Rd4 g5 40.h3 Bh5 41.g4 Bg4 42.hg4 Rf4 43.Be6 Kf6 44.Bf5 Ke7 45.Rc4 Kf6 46.Rc6 Ke5 47.Rb6 d5 48.Rh6 (48...de4 49.Re6 Kd4 50.Re4 Re4 51.Be4+–; 48.Re6 Kd4 49.b6 Ke3 50.ed5 Kd2+–) 1–0. Nielsen,Joergen Axel – Jensen,A, corr DSU Pokal, 1974.

5.e3 e5 (--> 4.e3 e5 5.c4 Nbd7).

5.g3 e5 6.Bg2 g6 7.Nc3 Bg7 8.Nf3 0-0 9.0-0 h6 10.Rc1 Re8 (10...Nc5 11.d4 ed4 12.Nd4=) 11.Qc2 (11.d4 ed4 12.Nd4 Nc5=) 11...Nc5 12.d3 Bd7 (12...a4 13.a3=) 13.e4 (13.Nd2 Bf5=) 13...Qc8 (13...c6 14.Rb1=) 14.Rfe1 Bh3 15.Bh1 (15.Nd5 Bg2 16.Kg2 Nfd7=) 15...Qd7 (15...Qg4 16.Nd5 Rac8 17.d4 ed4 18.Nd4=) 16.a4 (16.Na4 Ne6=) 16...Rf8 (16...c6 17.Rb1=) 17.d4 ed4 18.Nd4 Rae8 19.Rcd1 (19.Nd5 Bg4=) 19...Qc8 20.Ba3 (20.b6 c6 21.Nb3 Nb3 22.Qb3 Rd8+=) 20...Nfd7 21.Nd5 Bg4 22.f3 Be6 23.Nf4 Ne5 (23...Bd4 24.Rd4 Kh7 25.Rdd1+=) 24.Nd5 (24.Nfe6 Ne6 25.Bb2 Nc5+=) 24...c6 (24...Ned7 25.Bb2=) 25.Ne3+= Rd8 (25...Ned7 26.f4 Bh3 27.bc6 bc6 28.Nb3+/-) 26.f4+/- Ng4 27.Ne6 (27.bc6 Ne3 28.Re3 Bg4 29.cb7 Qb7+/-) 27...Ne3+= (worse is 27...Qe6 28.Ng4 Qg4 29.e5 cb5 30.cb5+– (30.ed6?! b4 31.Bb2 Bb2 32.Qb2 Na4+=)) 28.Re3 Qe6 (28...Ne6!? 29.e5 c5+=) 29.e5!+/- cb5 (29...Qe5 30.fe5) 30.Bc5 (30.cb5!? Rfe8 31.Bd5+–) 30...dc5+= 31.Bd5 Qd7? 32.ab5 b6?? 33.Rde1 Kh8 34.Kg2 Rde8? 35.h4 Qc7 36.h5+– g5 37.Qf5 Qc8 38.Qc8 Rc8 39.f5 Kg8 40.f6 Bh8 41.Kf3 Rc7 42.Kg4 Ra7 43.Kf5 Kh7 44.Rd1 Rd7 45.Red3 Rfd8 46.g4 Kg8 47.Bf7! (47.Bf7 Kf8 48.Rd7 Bf6 49.Kf6 Re8 50.Rd8 Rd8 51.Rd8) 1–0. Dzieniszewski,Andrzej – Meszaros, Burgas, 1987.

6.d4 Bg7 7.Nf3 0-0 8.Be2 b6 9.Nc3. Williams,Barry – Dawes,Gavin, NZCCA Handicap NZL, 1999.

6.d4 Bg7 7.Nf3 0-0 8.Be2 e5 9.0-0 Qe7 10.Nc3 c6 (10...Re8 11.Re1+=) 11.a4 (11.Rb1 e4 12.Ng5 h6+=) 11...Re8 12.de5 (12.Rb1 ed4 13.Nd4 Ne5+=) 12...Ne5= 13.Ne5 de5 14.Qc2 e4 (14...Be6 15.Rad1=) 15.Rad1 Bg4 16.Rd2 (16.Bg4 Ng4 17.bc6 Qc7=+) 16...Be2 17.Ne2 Red8 (17...cb5 18.cb5 Rac8 19.Nc3=) 18.Rfd1+= Rd2 19.Qd2 Ng4 (19...Qe6 20.Rc1=) 20.Bg7+= Kg7 21.Qd4 Nf6 (21...Qf6 22.Qf6 Nf6 23.b6+=) 22.Qb6 c5 23.Nc1 (23.Ng3 h6+=) 23...Ng4 24.h3 Qf6 25.Qf6 Nf6 26.Rd6 Ne8 27.Rd7 b6+= 28.Ne2 Rb8 29.Nc3 Nf6 30.Rd6 Rb7 31.Nd5 Nd5 32.Rd5 Re7 33.g4 Re6= 34.Kg2 h6 35.h4 Kf8 36.Kg3 Ke7+= 37.g5 hg5 38.hg5 Ke8 39.Kf4+/- Kf8 40.Rd8 Ke7+= 41.Rc8 Kd7 42.Rc6 Rc6 43.bc6 Kc6 44.Ke4 Kd6 45.f3 Ke6 46.f4 Kd6 47.Kf3 Ke6 48.e4+/- Kd6 49.f5 Ke5 50.f6?? Kd4=+ 51.Kf4 Kc4 52.Ke3 Kb3 53.e5 c4 54.e6 c3 55.ef7 c2 56.Kd2 Kb2 57.Kd3 c1Q 58.f8Q Qc2 59.Kd4 Qa4–/+ 60.Kd5 Qb5=+ 61.Ke6 Qg5 62.Qe7 Qf5–/+ 63.Kd6 a4?? 64.f7+– Qc5 65.Kd7 Qe7 66.Ke7 a3 67.f8Q a2 68.Qf6 Kb1 69.Qb6 (69...Kc1 70.Qc5 Kb2 71.Qb4 Kc2 72.Qa3+–) 1–0. Piszcz,Kazimierz – Gajda,Leszek, corr 2. AMM Poland, 1994.

5.a4 Be7 6.e3 h6 7.Nc3 0-0 8.Nf3 Re8 9.Be2 d5 (9...e4 10.Nd4=) 10.d4 (10.Ne5 d4 11.Na2 de3 12.de3 Bd6+–) 10...e4 11.Nd2 dc4 12.Bc4 c6 (better 12...Bb4!?=) 13.Qb3+– Rf8 14.0-0 (14.Nde4 Ne4 15.Ne4 Bb4 16.Bc3 cb5 17.Bb5 Be6+–) 14...cb5 (14...Bf5 15.Rac1+=) 15.ab5 b6 (15...Bd6!?+–) 16.Nce4 Ne4 17.Ne4 Bb7 18.Nd2 (18.d5 Nd7+–) 18...Nd7 19.Be2 (19.Rfd1 Bb4+–) 19...Nf6+– 20.Bf3 Bf3 21.Nf3 Rc8 (21...Qd5 22.Qa4+–) 22.Ne5 Bd6 23.Nc6 Qc7 24.h3 Bb4 (better 24...Ne4!? 25.Rfd1 Rfe8+–) 25.Nb4 ab4 26.Qb4 Qc2 27.Rac1 Qg6 (27...Qd3 28.Rc8 Rc8 29.d5+–) 28.Ba3 Rfe8 29.Rc6 Ra8 (29...Qd3 A) 30.Rb6 Nd5 31.Qb1 Qb1 (31...Qa3?! 32.Ra6 Qe7 33.Qf5=) 32.Rb1 Nb6–/+; B) 30.Qb2+–) 30.Rfc1 (better 30.Qb3+–) 30...Ne4?? (better 30...Qd3 31.R6c3 Qe2+–) 31.Rg6 fg6 32.Bb2 Nf6 (32...Kh7 33.Rc7 Rac8 34.Qc4+–) 33.Rc6 Nh5 (33...Kh7 34.Qc4 Re7 35.d5+–) 34.Rg6 Kh7 35.Rb6 Ra2 36.Qb3 Raa8 37.Rc6 (37.Qf7!? Reb8 38.Rb8 Rb8 39.Qh5 Rf8+–) 37...Reb8 38.b6 Nf6 39.b7 Ne4 40.ba8Q Nf2 (40...Rb3 41.Rc7 Nf6 42.Qf8 Ne8 43.Qf5 Kg8 44.Rc8 Re3 45.fe3 g6 46.Qg6 Kf8 47.Re8) 41.Qbb8 Nh3 42.Kf1 Ng5 (42...Nf4 43.Qg8) 43.Qh8 (43.Qg8) 1–0. BeepBeepImAJeep (2520) – juanfer1313 (2040), lichess.org, 2019.

5.Nc3 Be7 6.e4 =+.

5.d3 Nbd7 6.Nf3 g6 7.g3 Bg7 8.Bg2 0-0 9.0-0 Rb8 10.e4 b6 11.Nc3 Nc5 12.Nd5 Be6 13.Ba3 Bg4 14.Bc5 dc5 15.h3 Bf3 16.Bf3 Nd5 17.cd5 (better is 17.ed5!? e4 18.de4 Ba1 19.Qa1=) 17...Qd7–/+ 18.Bg4 Qb5 19.Rb1 Qe8 20.f4 h5 21.Be2 ef4 22.gf4 Qe7 23.Qe1 Rbd8 24.Qg3 Kh8 25.Kh1 Bf6 26.Rg1 Bh4 27.Qg2 Rg8 28.Rbf1 Rde8 29.Qf3 c4 30.dc4 (better is 30.Rc1!?=) 30...Qe4–/+ 31.Qe4 Re4 32.Bd3 Rd4 (better is 32...Re3 33.Rd1 Rh3 34.Kg2 Re3–+) 33.Rf3–/+ Re8 34.f5 g5 35.f6 Re5 36.Kg2 Be1 37.a4 Bd2 38.Rgf1 Bf4 39.Kf2? h4 40.Re1?? Re1 41.Ke1+= Bg3 42.Ke2 Rf4 43.Bf5 Rf3 44.Kf3 Be5 45.Ke4 Bf6 46.Bd7 Be7 47.Kf5 Kg7 48.Bc8 Kf8 49.Bd7 Kg7 50.Kg4 f6 51.Bf5 Bd6 52.Kf3 Be5 53.Ke4 Kf7 54.Be6 Ke7 55.Bg4 Kd6 56.Be2 Kc5 57.Kd3 Kb4 58.Bd1 Bd6 59.Bc2 g4! 60.Kd4 gh3 61.Be4 h2 62.c5 Bc5 63.Kd3 Ka4 64.Kc4 Ka3 65.Kc3 a4 66.Kc2 Bd6 67.Kc3 b5 68.Kc2 (68.Kc2–+). bratek55 (1730) – soptik26 (1745), kurnik, 2011.

5.d4 ed4 6.Bd4 =.

5.d4 e4 6.Nc3 =.

5.Nf3 e4 6.Nd4= c5 7.bc6 Nc6 8.e3 Bd7 9.d3= Nd4 10.Bd4 Bc6 11.Nc3 ed3 12.Qd3 d5 13.Rd1 dc4 14.Qc4 Nd7 15.e4 Rc8 16.Qb3 Bb4 17.Bc4 Bc3 18.Bc3+= 0-0 19.f3 Be4? 20.0-0?? Bc6 21.Qc2 b5 22.Bd3 g6 23.Qd2 b4 24.Bb2 Qe7 25.Rfe1= Qc5 26.Kf1 Rfe8 27.Qh6 f6 28.Qh4 Re1 29.Re1 Bb5 30.Bb5 Qb5 31.Kg1 Qd5 (32.Bd4 Qa2 33.Bf6 Nf6 34.Qf6 a4–+) 0–1. Figiel,Rafal – Van Rooijen,Peter, or01–004 E–mail, 2001.

5.Nf3 Be7 6.Nc3 =+.

5.Nf3 Bg4 6.d3 Be7 7.Nbd2 0-0 8.Qc2 Nbd7 9.e3 Nc5 10.Be2= Re8 11.a4 Nfd7 12.0-0 Bf6 13.Rfe1 Nb6 14.Kh1 Ne6 15.Ng1 Be2 16.Ne2 Bh4 17.Ng3 Qf6 18.Rf1 Nd7 19.Nde4 Qg6 20.f4? ef4–/+ 21.ef4 f5 22.Nc3 Bg3 23.hg3 Qg3 24.Ne2–/+ Qh4 25.Kg1 Nf6 26.Bf6 Qf6 27.Qc3 Qc3 28.Nc3 c6 29.Rab1 Nc5 30.Rf3 Re7 31.bc6 bc6 32.Rb6 Rc8 33.d4=+ Ne4 34.Re3 Kf7 35.Nb1 c5 36.d5 Ree8 37.Reb3 h6 38.Rb7 Kf6 39.Kh2 g5 40.g3 Nf2 41.Rb2 Ng4–+ 42.Kh3 Ne3 43.Na3 gf4–+ 44.gf4 Ng4?? 45.Nb5= Rcd8 46.Rb6 Re3 47.Kg2 Ke7–/+ 48.Na7 Ke8 49.Nc6= Rd7 50.Rb8 Kf7 51.Ra8?? Re4 52.Nd8? Ke7?? 53.Ne6? Rc4–+ 54.Rbb8? Ne3 55.Kh2 Nd5 56.Nd8 Ra4 57.Nc6 Kf6 58.Rf8 Kg6 59.Rg8 Kh5 0–1. Alderden,Dirk – Harjunpaeae,Veikko, corr ICCF–Cup8/9 V021, 1990.

6.e3 Bg7 7.Nf3 0-0 8.Be2 Nbd7 9.d4 ed4 10.ed4 Re8 11.0-0 Nf8 12.Bd3 Ne6 13.Qd2 Nh5 14.Rae1 Nef4 15.Bb1 Bg4 16.Re8 Qe8 17.Ng5 Qe7 18.Nge4 Qh4 19.f3+= Bd7 20.Rd1 b6 21.Qf2 Qf2+= 22.Kf2 f5 23.Ng3 Ng3 24.hg3 Ne6= 25.Nd5 c5?? 26.bc6+– Bc8 27.Rd2 Ba6 28.Ne3 Rc8 29.d5 Nc5 30.Bg7 Kg7 31.Bf5 Rf8? 32.Bc2 Rf7 33.Rd1 b5 34.cb5 Bb5 35.Rb1 Ba6 36.Rb8 Rb7 37.Rd8 Kf7 38.f4 a4 39.f5 Ke7?? 40.Ra8 Bd3?? 41.Ba4 gf5?? 42.Bc2 (42...Rb2 43.c7 Ne4 44.Ke1+–; better is 42.Re8! Kf7 43.cb7 Nb7+–) 1–0. Ranby,Hans – Davidson,Lennart, corr SSKK 2–745, 1991.

6.g3 Bg7 7.Bg2 0-0 8.Nf3 Nbd7 9.0-0 Nc5 10.d3 c6 (10...a4 11.a3=) 11.d4+= Ncd7 12.a4 Qc7 13.Rc1 Re8 14.e3 ½–½. Ibrahimov,Rasul (2375) – Mirzoev,Azer (2440), Dubai op, 1999.

5.e3 (--> 4.e3 e5 5.c4).

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).

5.Nf3 Bg7 6.d4 0-0 7.Nbd2 e5 –+.

6.d4 0-0 =.

6.Nf3 0-0 7.d4 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6 5.d4 Bg7 6.Nf3 0-0 7.c4).

6.h4 0-0 7.Be2 h5 (7...c5 8.Nc3=) 8.Nf3 e5 9.d3 Bf5 (9...Nfd7 10.Nc3=) 10.Nbd2 (10.e4 Bg4=) 10...e4 (10...Nfd7 11.e4 Bg4 12.0-0=) 11.de4+= Ne4 12.Bg7 Nd2?? (better is 12...Kg7 13.Ne4 Be4 14.Qd4 Qf6+=) 13.Bf8+– (13.Kd2?! Kg7 14.Nd4 Qf6=; < 13.Nd2 Kg7 14.g4 hg4 15.Bg4 Qf6+=) 13...Nf3 14.Bf3 Kf8 (14...Qf8 15.Bb7 Ra7 16.Bf3+–) 15.Bb7 Ra7 16.Bf3 Nd7 17.g4 (17.Qd4 Qb8+–) 17...hg4 18.Bg4 Bg4 19.Qg4 Ne5 20.Qe4 Qf6 21.Ke2 a4 22.h5 gh5 23.Rh5 Nc4 24.Rb1 Qc3 25.Rd5 Nb6 26.Rd4 d5 27.Qf5 Qa3?? 28.Rh1 Ke7 29.Rh7 Qa2 30.Kf3 Kd6 31.Qf6 (31...Kd7 32.Rf7 Kc8 33.Rf8 Kd7 34.Rd8#; 31.Rf7?! Kc5+–) 1–0. Fritz,Harry – Sierig, corr DDR, 1960.

6.Nc3 Bg7 7.d4 0-0 8.Nf3 Bg4 9.e3 Nd7 (9...f5 10.Be2+=) 10.h3 Bf3 (10...Bf5 11.g4 Be6 12.d5+=) 11.Qf3+/- (11.gf3?! c5 12.bc6 bc6=) 11...b6 (11...Rb8!?+/-) 12.Rd1 (12.0-0-0 a4+–) 12...f5 (12...Rc8 13.g3+–) 13.g4 fg4 14.hg4 Qf6?? (better is 14...h6+–) 15.Qh3 Rfd8 (15...Rfc8 16.Bg2 Rab8+–) 16.Nd5 (16...Qe6 17.Nc7+–) 1–0. Robert Edward (1865) – StephenHilton, internet, 2006.

6.e3 Bg7 =.

6.Nf3 Bg7 7.e3 0-0 8.d4 d5 (8...Re8 9.Nc3+=) 9.cd5 Qd5 10.Nbd2 c6 11.Bc4 Qd7 12.0-0 (12.Qa4!?+/-) 12...cb5= 13.Bd3 b6 14.Qe2 Ba6 15.a3 Ra7 (15...Rc8 16.Rfb1+=) 16.Rfb1+/- Rc8 17.Bb5 Qd8 18.Ba6 Na6 19.Nc4 Rb8 20.Rb5 Rab7 21.Rab1 Bf8 (21...Nc7 22.Rb6 Rb6 23.Rb6 (23.Nb6? Nd5-+) 23...Rb6 24.Nb6+-) 22.Na5! Ra7?? (22...ba5 23.Rb7 Pinning (23.Rb7 Deflection)) 23.Nc6 Qc7 24.Na7 Qa7 25.Qb2 Nc7 26.Rb6 Rb6 27.Qb6 Qb6 28.Rb6 Ba3 29.Kf1 (29.Rf6 Kg7 30.Rb6 Ne8+-) 29...Kf8 (29...f5 30.Ke2+-) 30.Ke2 (30.Rf6 Ke7 31.Rc6 Nb5+-) 30...Ke7 31.Kd3 (31.Nd2 Bd6+-) 31...Bd6 32.Kc4 f5 33.Ne5 (33.Ng5 Bh2 34.g3 Bg1+-) 33...f6 34.Nc6 Kd7 35.Nb8 Ke7 36.Na6 (36.d5!? h5+-) 36...Na6 37.Ra6 Bh2 38.g3 Bg1 39.Ra2 h5 (39...Kf7 40.Kd3 Bf2 41.Rf2+-) 40.Kd3 (40.f4!? g5 41.Rg2 h4 42.Rg1 h3+-) 40...h4 41.gh4 Bh2 42.f4 g5 (42...Bg3 43.Rg2 Bh4 44.Rg6 Be1+-) 43.Rh2 1-0. JorgeRomero (2125) - MatiZorrilla (1660), Rated Blitz tournament, lichess.org, 2015.

6.Nd2 0-0 7.Ngf3 e5 (7...Bf5 8.e3=) 8.de5 Ng4 9.e3 Nd7 10.Qc2 (10.Be2 Nge5 11.Bd4 f5=) 10...Nge5 (10...Nde5 11.Ne5 Ne5 12.f4=) 11.Nd4 (11.Be2 Qe8=) 11...b6 (11...Nc5 12.Be2=+) 12.h3 (12.Be2 Re8=) 12...Bb7 13.0-0-0 Nc5 14.f4 (14.Kb1 Qe7=+) 14...Ned7 15.Nc6 (15.h4!?=+) 15...Bb2–+ 16.Qb2 Qf6 (16...Bc6!? 17.bc6 Nb8–/+) 17.Qf6 Nf6 18.g4 Rfe8 19.Re1 Bc6 20.bc6 Re7 21.Rg1 (21.Nb3 Nfe4 22.Nc5 Nc5=+) 21...Rae8–/+ 22.Rg3 d5 23.cd5 (23.Rd1 Re3 24.Re3 Re3–/+) 23...Nd5 24.Nc4 (24.Bc4 Re3 25.Rge3 A) < 25...Ne3 26.Nf1 b5 27.Bb5+= (< 27.Ne3 bc4 28.Kd2 Ne4 29.Ke2 Nc3 30.Kf2 Re4–/+); B) 25...Re3 26.Re3 Ne3–+) 24...Nb4 (24...Nf4 25.Rd1 Ne4 26.Rf3–/+) 0–1. Neuhof,KE – Titjen,G, corr EU/M/GT/056 (year?).

6.Nf3 0-0 7.e3 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.e3 g6 5.d4 Bg7 6.Nf3 0-0 7.c4).

6.c4 0-0.

6.e4 0-0 7.Be2 (7.Ngf3 Nbd7=) 7...Nbd7 (7...a4 8.Ngf3=) 8.e5 (8.Ngf3 d5=) 8...de5 9.de5 Nd5 10.Nc4 N7b6 (10...Nc5 11.Qd4 Ne6 12.Qe4=) 11.Nb6 cb6 12.Bf3 Nb4 (12...Be6 13.Ne2+=) 13.a3+= Qd1 14.Bd1 Nd5 15.Bf3 Nc7 16.a4 (16.c4 Ne6+=) 16...Ne6= 17.Ne2 Ng5 (17...Nc5 18.Bd4=) 18.Bd5 Bf5 (18...Rd8 19.0-0-0+/-). Wesslen,Ulf – Hjortstam,Kurt, corr SSKK 3–52, 1982.

6.Nf3 0-0 7.Be2 Nbd7 8.c4 c5 9.Nbd2 ½–½. Bigalke,Andre – Dinckel,Joerg, Hamburg, 1999.

6.Nf3 0-0 7.Be2 Nbd7 8.h3 b6 9.0-0 Bb7 10.c4 Re8 11.Nc3 e5 12.d5 Nc5 13.Ba3 Nfd7 14.Qc2 e4 15.Nd4 f5 16.Rad1 Qg5 17.Na4 Bd4 18.ed4 Na4 19.Qa4 Nf6 20.Bc1 f4 21.Rfe1 Bc8 22.Qb3 Qh4 23.Bf1 a4 24.Qa3 Nh5 ½–½. Ramos Moreno,FJ (2110) – Perez Garcia,A (1845), Malaga ESP, City Ch, 2012.

6.e3 Bf5 7.Bd3 +=.

7.Be2 0-0 8.0-0 d5 9.c4 +=.

7.Be2 0-0 8.0-0 e5 9.c4 Re8 10.Nc3 b6 11.Rc1 Bb7 12.Qb3 (12.Qc2 A) 12...Qe7 13.d5 Nc5 14.e4 Bc8 15.Rce1 Bh6 16.Ba3 Bf4 17.Bc1 Bc1+=; B) 12...Ra7 13.d5 Nc5 14.e4 Bc8 15.a3 Bh6 16.Rb1 Bf4 17.Rbe1 Qe7+=; C) 12...ed4 13.Nd4 (13.ed4 d5 14.Rfd1 dc4 15.Ne5 Qe7 16.Nc4 Bh6 17.Ba3 Qe6=) 13...Nc5= 14.Rcd1 a4 15.a3 Qe7 16.Bf3 Bf3 17.Nf3 Qd7+=; D) 12...Rc8 13.d5 Nc5 14.Rcd1 e4 15.Nd4 Nfd7 16.a3 Ne5 17.Na4 Ncd3+=; 12.de5 de5 (12...Ne5 13.Ne5 de5 14.Qc2 Qe7 15.e4 Rad8 16.Nd5 Qc5 17.Rfd1 c6+=) 13.Qc2 Qe7 14.Rcd1 Nc5 15.Nd5 Nd5 16.cd5 e4 17.Ne1 Bb2=; 12.d5 h6 (12...Bc8 13.e4 Nc5 14.Qc2 Bh6 15.Rcd1 Bf4 16.Rde1 a4 17.a3 Bg4+=; 12...Nc5 13.Qc2 Bc8 14.e4 a4 15.Rcd1 Nh5 16.Ba3 Nf4 17.Bc5 bc5+=; 12...e4 13.Nd4 Nc5 14.a3 Qd7 15.Qd2 Bc8 16.Rcd1 Ng4 17.Ne6 fe6+=) 13.e4 Nc5 14.Qc2 Bc8 15.Rce1 Qe7 16.Bc1 Nh5 17.Be3 Nf4+=) 12...ed4 (12...Ne4 13.Ne4 Be4 14.Nd2 Bb7 15.Bf3 Bf3 16.Nf3 a4 17.Qc2 Qe7+=) 13.Nd4 (13.ed4 Nh5 14.Rce1 Nf4 15.d5 Ne5 16.Na4 Bc8 17.Ne5 de5=) 13...Ne4 14.Ne4 (14.Qd1 Qg5 15.Bf3 Ndc5 16.Ne4 Be4 17.Be4 Re4=) 14...Be4 15.Bf3 (15.Qd1 Qg5 (15...Nc5+= 16.Qd2 Be5 17.Rfd1 a4=) 16.Bf3 f5 17.Rc3 Ne5+=; 15.Rcd1 Nc5 16.Qa3 a4 17.Rfe1 f5=) 15...Bf3 16.Nf3 (16.gf3 Nc5 17.Qd1 a4+= (17...Qh4+=)) 16...Nc5 17.Qc2 Bb2 18.Qb2 Nd3 19.Qc3 Nc1 20.Rc1 Qe7 21.h4 (21.h3 Qe4–/+) 21...Rad8 (21...Rac8 22.Qd4–/+) 22.Rd1 (22.g3 Rd7–/+) 22...Qf8 (22...Qe4 23.Qb3–/+) 23.h5 Qg7 24.Qc2 Rd7 25.Nd4 (25.Rd4 Rde7–/+) 25...Rde7 (25...Qh6 26.hg6 hg6 27.Ne2–+) 26.Ne2 (26.hg6 Qg6 27.Qb3 Re4–/+) 26...Re4 (26...gh5 27.Nf4 Re5 28.Qe2–+) 27.Nf4 Rf4 (27...gh5 28.Nh5 Qg6 29.Nf4 Rf4 30.Qg6 hg6 31.ef4–+) 28.ef4 Qf6 (28...gh5 29.Qd2–/+) 29.hg6 hg6 30.g3 Qf5 (30...Qe6+=) 31.Qc3 (better is 31.Qf5!? gf5 32.Kf1=) 31...Re2 32.Rc1 (32.Qd4 Qe6–/+) 32...Qc5 33.Qf3 Ra2 34.Kg2 Rd2 (better is 34...Kg7!?–+) 35.Rh1 d5 36.f5 Qe7 (36...Qc4?? 37.fg6 f5 38.Rh4+–) 37.fg6 fg6 38.Rh4 g5 39.Rh5 Qe4 (39...Qe5 40.Kf1 Rd4 41.Rh6+=) 40.Rg5 Kh7 (40...Kh8 41.cd5 Qf3 42.Kf3=) 41.Qe4 de4 42.Re5 Rd4 (42...Kg6 43.Re4 Kf6 44.Kf3=) 43.Re7 Kg6 44.Rc7 a4 45.Rc6 Kf5 46.c5 bc5 47.Rc5 Kf6 48.Rc6 Kf5 49.Ra6 Rb4 50.b6 a3 51.Kh3 Rb2 52.Ra3 Rb6 53.Ra5 Kf6 54.Kg4 Rb2 55.Rf5 Kg6 56.Rf4 Re2= 57.Kh4 Re1 58.Kg4 Re2 59.Rf8 Kg6 ½–½. Katalymov,Boris N – Smits,Anatolijs, URS–ch29 sf Novgorod, 1961.

7.Be2 0-0 8.0-0 e5 9.c4 Re8 10.Nc3 b6 11.Rc1 Qe7 A) 12.Qc2 Bb7 (12...Qe6 13.de5 Ne5 14.Rfd1 Ra7 15.Ne5 Qe5 16.Nd5 Bf5 17.Be5 Bc2+– 2.47; 12...e4 13.Nd2 Qe6 14.Qa4 Rb8 15.Rfd1 Qf5 16.a3 h6 17.Nf1 Ng4+=; 12...Ra7 13.Nd5 Nd5 14.cd5 e4 15.Nd2 Nf6 16.Qc6 a4 17.Ba3 h6=) 13.d5 Nc5 14.e4 Bc8 15.Rcd1 Nh5 16.Bc1 Nf4 17.Be3 f5=; B) 12.Nd5 Nd5 (12...Qd8 13.Qc2 Bb7 14.de5 de5 15.e4 Nc5 16.Rcd1 c6 17.Nf6 Qf6+=) 13.cd5 e4 14.Nd2 Qg5 15.Rc7 Nf6 16.Kh1 Nd5 17.Rc1 Bb7=; C) 12.a3 h6 (12...Ra7 13.Re1 e4 14.Nd2 h6 15.Qa4 Bb7 16.Rc2 Qe6 17.Rd1 Bc8+=; 12...Bb7 13.d5 Nc5 14.Qc2 Bc8 15.e4 Bh6 16.Rcd1 Bf4 17.Rde1 Bg4+=; 12...Qe6 13.Nd5 Ra7 14.de5 de5 15.Qd2 Nc5 16.Rcd1 Nd5 17.cd5 Qd6+=) 13.Nd5 Nd5 14.cd5 e4 15.Nd2 Qg5 16.Rc7 Nf6 17.Kh1 Nd5+=.

7.Be2 0-0 8.0-0 e5 9.c4 Re8 10.Nc3 b6 11.Re1 A) 11...Qe7 A1) 12.de5 de5 (12...Ne5 13.Ne5 de5 14.e4 Be6 15.Nd5 Bd5 16.ed5 Qd6 17.Qd2 Rad8+=) 13.e4 Nc5 14.Qc2 c6 15.Rad1 Bb7 16.Nd2 cb5 17.cb5 Red8=; A2) 12.a3 Bb7 (12...h6 13.Qc2 Bb7 14.d5 e4 15.Nd4 Nc5 16.Rad1 Qe5 17.Rf1 Bc8+=; 12...Ra7 13.Qc2 h6 14.Rad1 e4 15.Nd2 Bb7 16.Qa4 Qe6 17.Rf1 Re7+=; 12...e4 13.Nd2 Bb7 14.Qc2 Qe6 15.Red1 Qf5 16.Rf1 Qg5 17.Rad1 Ng4+=) 13.d5 Nc5 14.Qc2 e4 15.Nd4 a4 16.Nc6 Qd7 17.Rad1 Qf5=; A3) 12.Qc2 Bb7 (12...Ra7 13.de5 Ne5 14.Ne5 Qe5 15.Nd5 Qe6 16.Rad1 Ne4 17.Bg7 Kg7+=; 12...e4 13.Nd2 Qe6 14.f3 Bh6 15.Nce4 Ne4 16.Ne4 f5 17.Bd3 Bb7+=; 12...h6 13.de5 Ne5 14.Ne5 de5 15.e4 c6 16.bc6 Qc5 17.Qa4 Re6+=) 13.de5 de5 14.e4 Nc5 15.Nd5 Bd5 16.cd5 Nfe4 17.Bc4 Nd6+=; B) 11...Bb7 B1) 12.d5 Nc5 (12...e4 13.Nd4 Nc5 14.Qc2 a4 15.a3 Nfd7 16.Rf1 Qh4 17.Rad1 Ne5=; 12...Bc8 13.e4 Nh5 14.Bc1 Nf4 15.Be3 Nc5 16.a3 Qd7 17.h3 f5+=; 12...Qe7 13.e4 Bc8 14.Bc1 Nc5 15.Qc2 h6 16.a3 Qd7 17.Be3 Ng4+=) 13.Qc2 e4 14.Nd4 Nfd7 15.Rf1 Qh4 16.Rad1 Ne5 17.a4 Ned3=; B2) 12.Qc2 Qe7 (12...Ng4 13.Nd5 ed4 14.Bd4 Ngf6 15.Rad1 Ra7 16.Qb2 a4 17.a3 Re6+=; 12...h6 13.de5 de5 14.Rad1 Qc8 15.e4 c6 16.Bd3 cb5 17.cb5 Qc7+=; 12...c6 13.Red1 Rc8 14.bc6 Bc6 15.de5 Ne5 16.Ne5 Re5 17.Qd2 Re6+=) 13.de5 de5 14.e4 Nc5 15.Nd5 Qd6 16.Bf1 Nd5 17.cd5 f5+=; B3) 12.a3 Qe7 (12...Ne4 13.Ne4 Be4 14.Nd2 Bb7 15.Qc2 f5 16.Rad1 Qe7 17.Bf3 Bf3+=; 12...h6 13.Qc2 Qe7 14.de5 de5 15.e4 Rad8 16.Rad1 c6 17.bc6 Bc6+=; 12...c5 13.bc6 Bc6 14.Rb1 e4 15.Nd2 d5 16.a4 dc4 17.Bc4 Qe7+/-) 13.Qd2 h6 14.d5 Nc5 15.Qc2 Rad8 16.e4 Bc8 17.Bc1 Nh5+=.

7.Be2 0-0 8.0-0 e5 9.c4 Re8 10.Nc3 b6 11.de5 A) 11...Ne5 12.Ne5 Re5 (12...de5 13.Qc2 Qe7 14.Rfd1 Bb7 15.Nd5 Nd5 16.cd5 f5 17.Bc4 Qd6+/-) 13.Bf3 Ra7 14.Nd5 Re8 15.Qd4 Nh5 16.Qd2 Nf6 17.Bd4 a4+=; B) 11...de5 B1) 12.e4 Nc5 (12...Bb7 13.Qc2 Nc5 14.Rfd1 Qe7 15.Nd2 Rad8 16.Nd5 Qd6 17.Ba3 Bc8+/-; 12...Qe7 13.Nd5 Qd6 14.Nf6 Nf6 15.Qc2 Bb7 16.Bd3 c6 17.Rad1 Nd7+=; 12...a4 13.Qc2 a3 14.Bc1 Nc5 15.Be3 Qe7 16.Nd5 Qd6 17.Nf6 Qf6+=) 13.Qc2 c6 14.Rfd1 Qc7 15.Ba3 cb5 16.Bc5 Qc5 17.cb5 Bb7=; B2) 12.Qd2 Qe7 (12...Re6 13.Qc2 Bb7 14.Rfd1 e4 15.Nd4 Rd6 16.Na4 c5 17.bc6 Bc6+/-; 12...e4 13.Nd4 Bb7 14.Rfd1 Qe7 15.Qc2 Rad8 16.Rd2 Ne5 17.Rad1 Neg4+=; 12...Bb7 13.Rad1 Qe7 14.Qc2 Rad8 15.e4 Nc5 16.Rd8 Rd8 17.Nd5 Bd5+=) 13.Rfd1 Nc5 14.Nd5 Nd5 15.cd5 Bf5 16.Rac1 Red8 17.Ba3 Be4+=; B3) 12.Qc2 Qe7 (12...Nc5 13.e4 c6 14.Ba3 cb5 15.Bc5 bc5 16.Rfd1 Qe7 17.cb5 Bg4+=; 12...Bb7 13.Rfd1 Qe7 14.e4 Nc5 15.Nd2 Rad8 16.Nd5 Qd6 17.Ba3 Ba8+/-; 12...e4 13.Nd4 Bb7 14.Rfd1 Qc8 15.Rd2 Rd8 16.Rad1 c5 17.bc6 Bc6+/-) 13.Nd5 Nd5 14.cd5 Nc5 15.e4 f5 16.Ba3 fe4 17.Bc4 Kh8+=.

7.Be2 0-0 8.0-0 e5 9.c4 Re8 10.Nc3 ed4 11.Nd4 Nc5 12.Nd5 =.

5.a3 c6 6.c4 b6 (6...cb5!? 7.cb5 Be6=) 7.Nc3 c5 (7...cb5 8.cb5 e5 9.Na4+=) 8.Na4 Be6 (8...e5 9.Nf3+/-) 9.Nc3 h5 (9...Nbd7 10.Be2+/-) 10.a4 (10.Nf3 g6+-) 10...g5 11.d4 cd4 12.ed4 Bf5?? (12...Bg7 13.Qd2+/-) 13.Bd3 (better 13.Qf3 Nbd7 14.Qf5+-) 13...e6 (13...Bd3!? 14.Qd3 Bg7+/-) 14.Bf5+- ef5 15.Qd3 Qe7 (15...d5 16.cd5 Nd5 17.Qf5+-) 16.Kd2 (better 16.Nge2!?+-) 16...Ne4+/- 17.Ne4 (17.Kc2 Kd8+/-) 17...fe4 18.Qe3 f5 19.Re1 (19.Nh3 Rg8+/-) 19...Bg7 (19...Ra4 20.Qb3 Ra7 21.Ne2+=) 20.f3 d5 21.Qb3 dc4 (better 21...f4!?+/-) 22.Qc4+- Nd7 (22...Qf7 23.Qc8 Ke7 24.Qb7 Nd7 25.Ba3 Kf6 26.Qc6 Qe6 27.Bb2+- (27.fe4?! Ra4 28.e5 Kf7+-)) 23.fe4 fe4 (23...f4 24.e5+-) 24.Nf3! Kf8?? (24...ef3 25.Qd5 Double attack (25.Re7 Pinning; 25.Re7 Deflection; 25.Qd5 Decoy)) 25.Ne5! Be5 (25...Ne5 26.Qd5 Double attack (26.Qd5 Decoy; 26.Re4 Interception; 26.de5 Passed pawn); 25...Be5 26.Qd5 Double attack (26.Qd5 Decoy; 26.Re4 Interception; 26.de5 Passed pawn)) 26.de5 Ne5?? (better 26...Nc5 27.Ba3 Rd8 28.Kc2 Rc8+-) 27.Qe4 (better 27.Rhf1 Ke8 28.Be5 Rd8 29.Bd4 Rf8 30.Qc6 Rd7 31.Qg6 Kd8 32.Qb6 Rc7 33.Qb8 Rc8 34.Bb6 Kd7 35.Qb7 Kd6 36.Bc5 Rc5 37.Qe7 Ke7 38.Re4 Kd7 39.Rf8 Kc7+-) 27...Rd8 28.Kc2 Qc5 (28...Qc7 29.Kb1 Rh6 30.Qe5 Qe5 31.Re5+-) 29.Kb1 Nd3 (29...Rh6 30.Rhf1 Kg8+-) 30.Ref1 (30.Rhf1 Qf2 31.Qe7 Kg8 32.Qg7) 30...Kg8 (30...Nf4 31.Rf4 gf4 32.Qf4 Ke7 33.Qe4 Kd6 34.Rd1 Kc7 35.Be5 Qe5 36.Qe5 Kb7 37.Qe7 Kc8 38.Rc1 Kb8 39.Rc6 Rd1 40.Kc2 Rc8 41.Kd1 Rg8 42.Rb6 Kc8 43.Qd6 Rg2 44.Rb8) 31.Qe6 (31.Qe6 Kh7 32.Rf7 Kg8 33.Qg6; 31.Qg6) 1-0. zembelek (2020) - Aydin32 (1910), Rated Blitz game, lichess.org, 2013.

5.a3 e5 6.d4 Nbd7 7.Nd2=.

5.Bf6 ef6 6.Nf3 Be6=.

6.Nf3 c6 7.Nc3 (7.bc6 bc6 8.Bf6 ef6+=) 7...Ra5 (7...e5 8.bc6 Bc6 9.Bb5=) 8.bc6+= bc6 9.Rb1 e5 10.Be2 Na6 (10...e4 11.Nd4+=) 11.0-0 Nc5 (11...Be7 12.d4 e4 13.Ne1+=) 12.d4 Nce4 (better 12...ed4!? 13.Nd4 Be7+=) 13.Ne4+– Ne4 14.de5 de5 15.Ne5 Nd6 (15...Ba3 16.Nd7 Bb2 17.Rb2 Nc3+–) 16.Bd4 Rd5 (16...Ra8 17.Rb6+–) 17.Nd7 (17.c4!? Re5 18.Be5 Bf5 19.Qa4 Bb1 20.Rb1 Qc8+–) 17...Qd7 18.Rb8 Nc8 (18...Ke7 19.c4 Qc7 20.cd5 Qb8 21.dc6 Qa8+–) 19.Ba6 Ke7 (19...f6 20.c4 Ra5 21.Bc8+–) 20.Bc8 (20.Rb7 Nd6 21.Rd7 Kd7+–) 20...Qc7 (20...Qd6 21.Qb1 Rd4 22.ed4+–) 21.Rb7 (21.Rb7 Kd8 22.Rc7 Kc7 23.c4+–) 1–0. Janek – Mezemis, internet, 2017.

6.Nf3 e5 7.Be2=.

6.Nf3 e6 7.d4 d5 8.Nbd2 c6 9.c4 dc4 10.bc6 Bc6 11.Bc4 Be7 (11...Bd6 12.Bd3=) 12.0-0 0-0 13.Ne5 Nbd7 (13...Bd5 14.Bd3+=) 14.Nc6 bc6 15.Qc2 Nb6 (15...c5 16.Rfc1+=) 16.Bd3+/- Nc8 (16...Qc7 17.Rfc1+/-) 17.Qc6 Nd6 18.Nc4 (18.Rfc1 Qa5 19.Bc3 Qd5+/-) 18...Rc8 (better 18...Qb8!? 19.Nb6 Ra7+/-) 19.Qa4+- Nc4 20.Bc4 Ne4 (20...Bd6 21.Rfc1+-) 21.Rfc1 Bd6 22.Bd3 (better 22.Rc2+-) 22...Qh4?? (22...Bh2 23.Kf1 Qh4 24.Be4 Rc1 25.Rc1 Qe4 26.Qa6+/-) 23.Be4 (better 23.g3 Qg4 24.Rc8 Rc8 25.Qd7+-) 23...Qe4 (23...Bh2!? 24.Kf1 Qe4 25.Rc8 Rc8+/-) 24.Rc8 Rc8 25.Qd7 Qc6 (25...Qc2+-) 26.Qc6 Rc6 27.Rc1 Rc1 28.Bc1 Kf8 29.Kf1 Ke8 30.h3 Kd7 31.Ke2 Kc6 32.Kd3 Kb5 33.Kc3 Ka4 (33...g6 34.Kb3+-) 34.e4 g6 35.Kc4 White prepares the advance d5 35...f5 (35...Bb8 36.g4+-) 36.ef5 (better 36.e5!? Be7+-) 36...gf5 37.d5 (37.f4 Bf8+-) 37...e5 (37...ed5 38.Kd5 Bf8 39.Kc4+-) 38.Bb2 (38.g4!? fg4 39.hg4 Bb8+-) 38...e4 39.Kd4 (39.g4 f4+-) 39…h5. sezwho (2030) - Aydin32 (1840), Rated Bullet game, lichess.org, 2013.

5.a4 b6 6.Nf3 Bb7 7.Be2 Be7 8.0-0 Nbd7 9.c4 0-0 10.d4 e4 11.Nfd2 d5 12.cd5 Bd5 13.Nc3 Bb7 14.Qc2 Re8 15.Nde4 Ne4 16.Ne4 Bb4 17.Ng3 Qh4? (17...Rc8 18.Bd3 h6 19.e4+/-) 18.Bd3 (18.Qc7 Bc8+–) 18...h5? (18...Bd6!?+/-) 19.Rad1 (19.Qc7 Bc8+–) 19...Nf6? (19...Bd6 20.d5! Nf6 21.f4+–) 20.Qc7 (better is 20.Nf5!? Qg5 21.f4 Qg2 22.Qg2 Bg2 23.Kg2 g6+–) 20...Rab8 21.Nf5 Qg5 22.Qg3 Qg3 23.Ng3 h4 24.Nf5 h3 25.gh3 Ne4 26.Ng3 (better is 26.d5 Bd5 27.Ng7+– (27.Bg7?! Ng5 28.f3 Bf3 29.Rf3 Nf3 30.Kf2 Ne5+/-)) 26...f5? (better is 26...Ng5 27.d5 Nf3 28.Kh1 Bd5 29.Bh7 Kh7 30.Rd5 g6+–) 27.Nf5+– Re6 (27...Rf8 28.Be4 Be4 29.Ng3+–) 28.Ng3 (better is 28.Bc4 Bc8+–) 28...Ng5 29.Bc4 Nh3 0–1. bananinha (1660) – krzysiek771 (1785), kurnik, 2012.

5.a4 c6 6.c4 cb5 7.ab5 Be7 8.Nf3 0-0 9.Be2 b6 (9...e4 10.Nd4=) 10.0-0 Nbd7 11.Nc3 h6 (11...Bb7 12.d4=) 12.Qc2 Nc5 13.d4 ed4 14.ed4 Ne6 15.Rfe1 Bd7 16.Ba3 Qc7 17.Rec1 (17.Bd3 Rfe8+=) 17...Nh7 (better is 17...Nf4!?=) 18.Nd5+/- Qd8 19.Ne7 Qe7 20.Bd3 Nhg5 21.Ng5 Qg5 (better is 21...Ng5 22.c5 Rfc8+/-) 22.Re1 (better is 22.Bd6!? Rfd8 23.d5+/-) 22...Nd4= 23.Qb1?? (better is 23.Bh7 Kh8 24.Qd3=) 23...Nf3–+ 24.Kh1 Ne1 25.Qe1 Rfe8 26.Qc3 Bc8 (26...d5 27.Bb2 dc4 28.f4–+) 27.Bd6 Bb7 28.Bg3 h5 29.h4 Qe7 30.f3 Qf6 31.Qc1?? Qd4 32.Bf5 Re5 33.Be5–/+ Qe5 34.Bh3 Re8 35.Qg5?? Qa1–+ 36.Kh2 Qf6 37.Qh5 Re5 38.Qg4 Qh6 39.Qd4 Re8 40.Qd7 Qf4 (40...Qf4 41.Kg1 Qe3 42.Kh2 Qe5 43.Kh1 Bc8–+) 0–1. thecat74 – winer4000, playok.com, 2012.

5.a4 Be6 6.Nf3 Nbd7 7.d4 e4 8.Nfd2 d5 9.c4 Bb4 10.Qb3 dc4 11.Bc4 Bc4 12.Qc4 Nb6 13.Qb3 Qd5 14.0-0 0-0 15.Nc3 Qb3 16.Nb3 Nc4 17.Nd1 Nd5 18.Nc5 b6 19.Ne4 f5 20.Nec3 Nb2 21.Nd5 Nd1 22.Rfd1 Bd6 23.g3 Kf7 24.Rdc1 Ke6 25.Nc7 1–0. mihai740609 – mrug, kurnik, 2014.

5.a4 Bf5 6.Nf3 Qd7 7.c4 Be7 8.Be2 0-0 9.0-0 c6 10.h3 cb5 11.cb5 b6 12.d4 (12.Nc3 Rc8=) 12...e4 13.Nh2 (13.Nfd2 d5=) 13...d5 14.Ba3 Re8 (14...Rc8 15.Be7 Qe7 16.Ra3=) 15.Nd2 (15.g4 Be6=) 15...Ba3 16.Ra3 Qd6 (16...Rc8 17.Qa1=) 17.Rc3 Ra7 (17...Rc8 18.Rc8 Bc8 19.Qc2=) 18.Ng4 (18.Qc2 Nfd7+=) 18...Bg4= 19.Bg4 Ng4 (19...Rc7 20.Rc7 Qc7 21.Bf5=) 20.Qg4+= Rc7 21.Rfc1 Rc3 22.Rc3 h6 23.Rc8 Qe7 (better 23...Rc8!? 24.Qc8 Kh7+=) 24.Qf5+– Kf8?? (better 24...Rd8+–) 25.Re8 (better 25.Qh7!? f6 26.Rb8 Rb8 27.Qh8 Kf7 28.Qb8 Kg6+–) 25...Ke8 26.Qd5 Nd7 27.Qe4 Qe4 28.Ne4 f5 (28...Ke7+–) 29.Nd6 Ke7 (29...Kf8 30.Nf5 Nf6 31.Nd6+–) 30.Nf5 (30.Nf5 Kf7 31.e4+–) 1–0. Abdullaevich (1775) – alenf1 (1780), lichess.org, 2019.

5.a4 g6 6.c4 b6 7.Nf3 Bb7 8.Be2 Bg7 9.0-0 0-0 10.d3 Nbd7 11.Nc3 Nc5 12.d4 ed4 13.Nd4 (13.Qd4? Nfe4 14.Qg7 Kg7 15.Ne4 f6 16.Nc5 bc5–+ (worse 16...dc5 17.Rad1 Qe7 18.Ng5–+); 13.ed4?! Nce4+=) 13...Nce4 14.Ne4 Be4 15.Bf3 Bf3 16.Qf3 (worse 16.gf3 Nd7=+) 16...Qe7 17.Nc6 Qe8?? (17...Qe6 18.Rad1+=) 18.Rad1 (better 18.Bf6 Qe6 19.Bg7 Kg7 20.Nd4+–) 18...Nd7 19.Bg7 Kg7 20.Rd4 Ne5 21.Ne5 Qe5 22.Rfd1 Rad8 23.h3 f5 24.Qc6 Rf7 25.Rd5 Qe6 (25...Qe8 26.Qe8 Re8 27.g3=) 26.R1d4 Rfd7 (26...Re8 27.Rf4=) 27.Rd1 (27.c5 bc5 28.Rc5 dc5 29.Qe6 cd4 30.ed4 Kf8+–) 27...Qf6 (27...Rf7 28.c5 bc5 29.Rc5+=) 28.R5d4 h5 29.Qd5 g5 30.h4 (30.Qf3 g4 31.Qg3 Re7+=) 30...gh4 (30...g4!?+=) 31.Rf4+– Rf7 32.Rdd4 (32.Qf3 Rh8+–) 32...h3 33.gh3 Qg5 (33...Rg8 34.Kf1+=) 34.Rg4+– Threatening mate... how? 34...hg4 35.Rg4 fg4?? A pinning theme (35...Qg4 36.hg4) 36.Qg5+– A double attack 36...Kf8 (36...Kh7 37.Qd8 gh3 38.f4+–) 37.Qd8 Kg7 38.hg4 Rf8 (38...Kh7 39.f4 Rg7 40.Qh4 Kg8 41.f5+–) 39.Qg5 (better 39.Qc7 Rf7 40.Qb6 Rd7+–) 39...Kf7 40.f4 Ke8 41.Qf5 (better 41.f5 Rf7+–) 41...Rf7 (41...Rf5 42.gf5 Kd7 43.Kf2+–) 42.Qf7 (better 42.Qc8 Ke7 43.Qc7 Ke8 44.Qd6+–) 42...Kf7 43.Kf2 Kg6 44.Kf3 Kf6 45.e4 Kf7 46.Ke3 (46.Ke3 Kf6 47.Kd4+–) 1–0. BeepBeepImAJeep (2530) – michal_kroo (2095), lichess.org, 2017.

5.a4 g6 6.c4 Bg7 7.Nf3 0-0 8.Be2 Nbd7 9.0-0 Nc5 10.d4 ed4 11.Nd4 (worse 11.Qd4 Nb3 12.Qh4 Na1 13.Ba1 Ne4 14.Qe4 Ba1–/+) 11...Ne6 12.Nc3 Nd4 13.ed4 Re8 14.Bf3 c6 (14...Rb8!?+=) 15.bc6+– b6?? (better 15...Rb8 16.Qd2 bc6 17.Bc6 Bd7+–) 16.c7!+– Qc7 17.Ba8 Bg4 18.Bf3 (18.Nd5 Nd5 19.Qg4 Nb4+–) 18...Bf3 19.Qf3 Qc4 20.Rfc1 (20.Nb5 Qe2 21.Qc3 Nd5+–) 20...Qd4 21.Rab1 Ng4 (21...d5 22.Nb5 Qg4 23.Qd1+–) 22.Nb5 Qa4 23.Nd6 Rf8 24.Bg7 Kg7 25.Rc7 (better 25.Rb6 Qd4 26.Ra6+–) 25...Ne5 (25...Nf6 26.Qb7 Qa2 27.Qb6+– (worse 27.Rb6 Ng4 28.Ne4 Rd8+–)) 26.Qe4 (better 26.Qc3 Qf4 27.Re7+–) 26...Qe4 27.Ne4 Nd3 (27...Rd8+–) 28.Rb6 Re8 (28...Nf4 29.Ra7 Rc8+–) 29.Nd2 (better 29.f3 h6 30.Rbb7+–) 29...Re1 30.Nf1 Re2?? (better 30...Nf4 31.Rb2 Ne2 32.Re2 Re2+–) 31.Rbb7 Rf2 (31...g5 32.Rf7 Kg6 33.Rg7 Kf6 34.Rh7+–) 32.Rd7 (better 32.Rb3 Rf1 33.Kf1 Ne5+–) 32...Ne5 (32...Rb2 33.Rf7 (33.Rd3?! Rb7 34.Ra3 Ra7+–) 33...Kh6 34.Ra7+–) 33.Kf2 Ng4 (33...Nd7 34.Rd7 Kf6 35.Ra7+–) 34.Kg3 Ne5 35.Re7 Kf6 36.Re5 (better 36.Nd2 Kf5+–) 36...Ke5 37.Rb5 (37.Rf7 Kd4+–) 37...Kd4 (37...Ke6 38.Ra5 h6 39.Ne3+–) 38.Ra5 Kc4 (38...f6 39.Ra7+–) 39.Ra7 Kd4 (39...h5 40.Rf7 Kd4 41.Rg7+–) 40.Rf7 Ke5 41.Rh7 g5 42.Rh6 Kf5 43.Rh5 Kg6 44.Kg4 (44.Kg4 Kf6 45.Rg5+–) 1–0. RichardSommer (1980) – elmaestrovmc (1980), lichess.org, 2020.

5.a4 g6 6.d4 Bg7 (6...e4 7.Ne2=) 7.de5 de5 (7...Nfd7!?=) 8.Qd8+– Kd8 9.Be5 c6 (9...Re8 10.Nf3+–) 10.Nf3 cb5 11.ab5 Nbd7 12.Bc3 Ke7 (12...b6!?+–) 13.Ra5 Ra5 14.Ba5 Re8 15.Bb4 Kd8 16.Bd3 Ne5 17.Ba5 Ke7?? (17...Kd7+–) 18.Ne5 Kf8 (18...Nd5 19.Nc4+–) 19.Nf3 (19.Nc4 Be6+–) 19...Be6 20.0-0 Ra8 21.Bb4 Kg8 22.Nc3 Nh5 (22...Nd5 23.Nd5 Bd5 24.c4 Bf3 25.gf3+–) 23.Nd4 Bd4 24.ed4 Rd8 (24...Nf4 25.Be4 Rc8 26.Bd6 Nh3 27.gh3 Rc3 28.Ra1+–) 25.Bc5 Kg7 (25...Nf4 26.Be4 Rd7 27.Ra1+–) 26.Re1 (26.Be4 Bc8+–) 26...Nf6 27.f3 Rd5 (27...h6+–) 28.Nd5 Bd5 (28...Nd5 29.Be4+–) 29.c4 Nd7 1–0. sirgeshdb – Twitch_tv_KugelBuch, lichess.org, 2020.

5.a4 g6 6.Be2 Bg7 7.Nf3 0-0 8.0-0 Qe7 9.d4 e4 10.Nfd2 c6 11.c4 c5 12.d5 b6 13.f4 (13.Nc3 Re8+=) 13...ef3= 14.Rf3 Bg4 15.Rg3 (15.Rf2 Qe3 16.Ra3 Be2+=) 15...Be2 (15...Nh5!? 16.Rg4 Qe3 17.Kh1 Bb2–/+) 16.Qe2= Nh5 17.Qh5 Bb2 18.Ra2 Be5 19.Rg4 Nd7 20.Qh6? f5–+ 21.Rh4? Bf6 22.Rh3 Bg5 0–1. Woschkat,Karl_Heinz – Brissman,Anders, corr ICCF World Cup, 1985.

5.c4 d5 6.a4 Bd6 7.Nf3 e4 8.Nd4 0-0 9.Nc3 Bg4 10.f3 ef3 11.gf3 Be6 12.Ne6 fe6 13.Bh3 Qe7 14.f4 c5 15.Rg1 d4 16.ed4 cd4 17.Ne2 d3 18.Nd4 Bf4 19.Be6 Kh8 20.Qf3 Ne8 21.0-0-0 Bd2 0–1. jeglin – vodovod (1610), kurnik, 2014.

5.c4 Bd7 6.Nf3 c5 7.d4 cd4 8.ed4 e4 9.Nfd2 Bg4 10.Be2 Be2 11.Qe2 (worse is 11.Ke2 d5+=) 11...d5 12.c5 Qd7 13.a4 Be7 14.0-0 0-0 15.f3 ef3 16.Nf3 Re8 17.Ne5 Qc8 18.Nd2 Nbd7 19.Ndf3 Ne5 20.de5 (better is 20.Ne5 b6 21.c6+=) 20...Ne4 (20...Qc5? 21.Bd4 Qb4 22.Rfb1+–) 21.c6 bc6 22.Rac1 c5 23.Rfd1 Rd8 24.Nd2 (24.Nd4!? Bg5 25.Rc2+=) 24...Nd2–/+ 25.Qd2 d4 26.Rc4 Qg4 (26...Qe6 27.Rcc1–+) 27.Ba3–/+ Rdc8 28.Rdc1 (28.Qc2 Qe6 29.Re1 f6–/+) 28...Qe4 (28...Bg5 29.Qd1 Qe4 30.R1c3–+) 29.Bc5 (better is 29.Qe1 Qe1 30.Re1+=) 29...Bc5?? (better is 29...Qd5 30.b6 Rc5–+ (30...Bc5?! 31.Qc2=)) 30.Rc5= Rc5 31.Rc5 Rd8 32.h3 d3 33.b6?? (better is 33.Rc1+=) 33...Qd4–+ 34.Kh2 (34.Qf2 Qf2 35.Kf2 d2–+) 34...Qc5 35.b7 Qb6 0–1. marvis (1665) – dtpwaldi, kurnik, 2013.

5.c4 e4 6.d3 ed3 7.Bd3 Nbd7 8.Nf3+= Nc5 9.Be2 Be7 10.0-0 0-0 11.Nd4 Nfd7 12.Nc3 Nb6 13.a4 Bf6 14.Nd5+= Nd5 15.cd5 Re8 16.Qc2 Qe7 17.Bf3 Be5= 18.g3 Qf6 19.Bg2 Qg6 20.Qg6+= hg6 21.Rfd1 Bf5 22.Ra2 Kf8 23.f3 Bd7 24.e4 g5 25.Ba1 g4 26.f4 Bf6 27.Re1 Re7 28.Re3 Rae8= 29.Nb3 Ba1 30.Ra1 b6 31.Nc5+= bc5 32.Rae1 f6 33.Kf2 g6 34.Bf1 Rh7 35.Kg2 Rhe7 36.Bd3 Bf5 37.Kf2 Bd7 ½–½. Ostroverkhova,Elena – Novikova,Margarita (2090), Femida Open Kharkov UKR, 2003.

5.c4 Bg4 6.Be2 Be2 7.Ne2 Be7 8.0-0 0-0 9.d4 Nbd7 10.Nbc3 Nb6 11.Qd3 e4 12.Ne4 Ne4 13.Qe4 Nc4 14.Qc2 d5 15.a4 Bd6 16.Bc1 f5 17.Ng3 (17.Nc3 c6+=) 17...Qh4–/+ 18.f4 Qf6 19.Rf3 Rae8 20.Bd2 c5 21.bc6 bc6 22.Re1? (better is 22.Qd3–/+) 22...Nd2–+ 23.Qd2 Bb4 24.Qd1 Be1 25.Qe1 Qd4! 26.ed4 Re1 27.Kf2 Ra1 28.Rc3 Ra4 29.Rc6 g6 (29...Rd4 30.Ke3 Ra4 31.Rd6–+) 30.Ne2 Ra2 31.Kf3 Rb8 (31...Rb8 32.Rc3 a4–+) 0–1. Shorokhov,M (2135) – Polyansky,V (1995), 14th FIDE Open, Voronezh RUS, 2010.

5.c4 h6 6.Nf3 Be6 7.d4 ed4 8.Nd4 Nbd7 9.Ne6 fe6 10.Nd2 e5 11.Qc2 Be7 12.Qg6 Kf8 13.Bd3 Qe8 14.0-0 Qg6 15.Bg6 c6 16.a4 Rc8 17.Rac1 cb5 18.cb5 Nb6 19.Rc8 Nc8 20.Nc4 b6 21.Rd1 h5 22.f3 Rh6 23.Bf5 Na7 24.Nd6 Bd6 25.Rd6 Ke7 26.Re6 Kf7 27.Be5 Ng8 28.Rh6 Nh6 29.Bh3 g5 30.Bb8 Nb5 31.ab5 g4 32.Bf4 gh3 33.Bh6 hg2 34.Kg2 a4 35.e4 a3 36.Bc1 a2 37.Bb2 Ke6 38.f4 Kd6 39.Bd4 a1Q 40.Ba1 Kc5 41.f5 Kb5 42.f6 Kc6 1–0. orangutandu – staszek2013, kurnik, 2013.

5.Bc4 Nbd7 (better 5...d5 6.Be2 e4=+) 6.Ne2?? (6.d4 Nb6 7.Be2 e4=+) 6...Be7?? (better 6...d5 7.Bd5 Nd5–+) 7.a4 0-0 8.0-0 Nb6 (8...d5 9.Ba2=+) 9.Bb3= Be6 (9...c6 10.Nbc3=) 10.f4 (10.Be6 fe6 11.d3 c6=) 10...Bb3=+ 11.cb3 e4 12.Nbc3 (12.Bd4 Nbd5=+) 12...d5 13.Ng3 (13.Rc1 Nbd7=+) 13...c5 (13...Re8 14.Nce2=+) 14.bc6 bc6 15.Nf5 (15.Rc1 Re8=+) 15...Qd7 16.Ne7 Qe7 17.Ne2 Rfe8 (17...c5 18.Rc1 Nbd7 19.Ng3=+) 18.Nd4 (18.Rc1 Rec8=) 18...Qd7 (18...Rec8!?=+) 19.Rc1= Rac8 (19...Rec8 20.Ba3+=) 20.Rc5+= Na8 (20...Qd6 21.Ra5 Nbd7 22.Ra6+=) 21.Ra5 (21.Qc2 Nb6+–) 21...Nc7 (21...c5 22.Nb5 Qe6 23.Ra7+–) 22.Rc5 (22.Qc2 Ne6+–) 22...Ne6 (22...Na6!? 23.Rc3 c5=) 23.Ne6+– Qe6 24.Bd4 (24.Bf6 Qf6 25.Qa1 Qf5+–) 24...Nd7 25.f5 Qh6 26.Rc1 (26.Rc3 c5 27.Qc2 Qd6+–) 26...Ne5 (26...c5 27.Bc3+=) 27.Be5+– Re5 28.Qg4 (28.f6 Rg5+–) 28...Qf6 29.Rc5 (29.b4 Rb8 30.b5 cb5 31.ab5 Qd8+–) 29...Rce8 (29...h6 30.Rfc1+–) 30.a5 (30.b4 Rb8 31.b5 cb5 32.ab5 h5 33.Qh5 Qd6+–) 30...h6 (30...Ra8 31.Rfc1 Rf5 32.Rc6 Rf1 33.Rf1 Qc6 34.b4+–) 31.a6 (31.Rfc1 Rf5 32.Rc6 Rf1 33.Rf1 Qc6+–) 31...Ra8 32.Ra5 (32.Qe2 Rf5 33.Rf5 Qf5 34.Rc6 Qd7+–) 32...c5 (32...Ra7 33.d4 ed3 34.Qd4+=) 33.Rfa1 (33.a7 Qb6 34.Rfa1 Qb3+–) 33...Rf5= 34.Qg3 (better 34.Qe2=) 34...Ra7?? (better 34...Qc6=) 35.Qb8+– Kh7 36.Qa7 Rf2 (36...Qh4 37.g3 Qh5=) 37.Qc7 (37.Rc5 Rd2 38.Qf7 Qa1 39.Qf1 Rd1 40.Qd1 Qd1 41.Kf2 Qd2 42.Kf1 d4–+; 37.Qc5?! Re2 38.Rf1 Qg6=) 37...Rd2 (37...Re2 38.Qf4 Qf4 39.ef4+–) 38.Qg3 Qb2 39.a7 Rc2 40.a8Q (better 40.Rf1 Rc1 41.Qf4 Rf1 42.Qf1 Qe5+–) 40...Rc1 41.Qe1! Re1 42.Re1 Qf6 (42...Qc3 43.Raa1 Qe5 44.Rad1+–) 43.Raa1 (43.Qd5!? Qg5 44.Qe4 f5+–) 43...d4 (43...Qe6 44.Red1 d4 45.ed4 cd4 46.Rd4+–) 44.Qe4 g6 45.ed4 (45.Rf1 Qf1 46.Rf1 Kg7 47.Qe5 Kf8 48.Ra1 f5 49.Ra7 c4 50.Qb8) 45...cd4 46.Rf1 Qd6 (46...Qd8 47.Rf7 Kh8 48.Qe5 Qf6 49.Ra8) 47.Rf7 Kg8 48.Re7 (48.Qe8 Qf8 49.Qf8) 48...Qf6 49.Ra8 (49.Ra8 Qf8 50.Qg6 Kh8 51.Rf8) 1–0. FeegLood (2695) – lamorocha (2325), lichess.org, 2015.

5.d3 Be7 6.c4 0-0 7.Nf3 Bg4 8.Be2 Nbd7 9.0-0 c6 10.a4 Re8 11.Nbd2 Qc7 12.h3 Bh5 13.Nh2 Be2 14.Qe2 d5 15.Rfc1 Bb4 16.Nb3 Qd6 17.Ng4 Rad8 18.Nf6 Nf6 19.c5 Qe6 20.b6 (20.d4 Nd7=) 20...h6 21.Bc3 d4 22.ed4?? (better is 22.Bb4 Qb3 23.Rcb1=) 22...Qb3–+ 23.de5 (23.Rab1 Qa4 24.Bb4 ed4 25.Qd2 ab4 26.Rb4–+) 23...Bc3 24.Rab1 Qa3 25.Qc2 Be5 26.Qc4 Qd3 0–1. oldi62 (1670) – grigoriju (1630), kurnik, 2013.

5.d4 Nbd7 6.Nf3 ed4 (6...e4 7.Nfd2=) 7.Qd4 (7.Bd4 d5=) 7...g6 (7...Nc5 8.Bd3=) 8.Nc3 Bg7 9.Na4 (9.0-0-0 0-0+=) 9...0-0 10.0-0-0 (10.Bc4 Qe7=) 10...Re8 11.Bc4 Nf8 (11...Re4 12.Qc3 h6 13.h3=) 12.Kb1 (12.Qh4 Qe7=) 12...Re4 (12...Be6 13.Be6 Ne6 14.Qh4=) 13.Qd3 Be6 14.Nd4 (14.Be6 Ne6 15.c4 Qe7=) 14...Bc4 15.Qc4 d5 16.Qb3 Ng4 (16...Rg4 17.Rhg1=) 17.Rd2 Ne6 18.Ne6 fe6 19.Bd4 Bd4 20.ed4 (worse is 20.Rd4 Nf2 21.Rf1 Rd4 22.ed4 Ne4–+) 20...Qg5 21.Qc3 e5 22.Nc5 ed4 23.Rd4 Rd4 24.Qd4 Re8 25.h3 Nf6 26.g4 b6 27.f4 bc5 28.fg5 cd4 29.gf6 h6 30.h4 Re5+= 31.Kc1 a4 32.a3 Re3 33.Kb2 Re2 34.Kb1 Re3 35.Kb2 Re2 36.Kc1 Re3 37.g5 Ra3 38.Kb2 Rg3 39.gh6= Rf3 40.Re1 Rf6 41.Re8 Kh7 42.Re7 Kh6 43.Rc7 Rf4 44.Rc5 Rh4 45.Ka3 Kg7 46.b6 Rh8 47.Ka4 d3 48.cd3+– g5 49.Kb5 Kf6 50.b7 Rb8 51.Kb6 Ke6 52.Kc7 Rg8 53.b8Q Rb8 54.Kb8 (54.Kb8 Kd6 55.d4+–) 1–0. Gierth,Karlheinz (2215) – Zylla,Johannes (2135), BdF, 2004.

5.d4 e4 6.d5 =.

5.Be2 g6 6.c4 Bg7 7.Nf3 Nbd7 8.a4 e4 9.Nd4 Nc5 10.Nc3 0-0 11.0-0 Bd7 12.d3 ed3= 13.Bd3 Nd3 14.Qd3 Ng4 15.Nf3 Qe8 16.Rad1 b6 17.Rd2 Rc8 18.Nd5 f6 19.Qb3 Rf7 20.h3 Ne5 21.Ne5 fe5= 22.e4 Be6 23.Rc2 Bh6 24.Bc1 Qf8 25.Qg3 Qg7 26.f3 Rcf8 27.Qh4 Bf4 28.Bf4 ef4= 29.Rd1 g5 30.Qf2 ½–½. Lewis,James E (2245) – Baquero,Luis A (2355), USA op, 1990.

5.Ne2 Be7 6.Ng3 0-0 7.Be2 Bd7 8.0-0 b6 9.f4 c6 10.a4 Qe8 11.c4 ef4 12.Rf4 d5 13.d3 (13.Nf5 Bf5 14.Rf5 Qd7+=) 13...Be6 (13...cb5 14.Nf5 dc4 15.ab5 Bf5 (15...Bb5 16.Qe1 Kh8 17.Ng7+–) 16.Rf5 Qd7+=) 14.Nd2 dc4 15.dc4 cb5 16.cb5 Nbd7 17.Bh5 Nc5 18.Bf3 Rd8 19.Qe2 Rd2 (better is 19...Nd5!? 20.Bd5 Rd5+=) 20.Qd2+= Nb3 21.Qd1 Na1 22.Ba1 Qd8 23.Rd4 Qc7 24.Rf4 Rd8 25.Qb1 Bd5 (better is 25...Nd5 26.Re4 Bd6+=) 26.e4?? (better is 26.Nf5!?=) 26...Be6 (better is 26...Ba2! 27.Qf1 Qf4–+) 27.e5+= Nd5 28.Re4 Nc3 29.Qb2?? Ne4 30.Be4 Qd7 31.Bf3 Bc5 32.Kh1 Qd1! 33.Bd1 Rd1 34.Nf1 Rf1 0–1. 56ctx56 – szekely300, kurnik, 2012.

5.Ne2 Bg4 6.c4 Nbd7 7.Qc2 Bh5 8.f4 Nc5 9.fe5?? (9.Nbc3!?=) 9...de5?? (9...Bg6 10.Qc3 Nd3 11.Qd3 Bd3 12.ef6 gf6–+ (12...Bc4?! 13.fg7 Bg7 14.Bg7+=)) 10.Ng3 Bg6 11.Qd1 Nd3 (11...Bd6!?–/+) 12.Bd3+= Bd3 13.Qb3 (better is 13.Be5!? Bc4 14.Qf3=) 13...e4–/+ 14.Qc3 Ng4 15.Nf5 Qg5 16.Ng7+= Kd7 17.Qd4 Bd6 18.Nc3 f6 19.Ne4= Be4 20.Qe4 Qg7 21.Qb7 Ne5 22.Qd5 Qf7 23.Qf7+/- Nf7 24.Bf6 Rhg8 25.0-0 Ne5?? 26.Be5 Be5 27.d4 Bg7 28.Rf7 Kc8 29.Raf1 Kb7 30.Rd7 Rad8 31.Rff7 Rd7 32.Rd7 Bh6 33.Kf2 Rf8 34.Ke2+– Re8 35.Rh7 Be3 36.Kd3 Bg1 37.Rh3 Re1 38.d5 Ra1 39.Rh7 Rd1 40.Kc2+– Rf1? 41.d6 Rf2 42.Kb3 Rg2 43.Rc7 Kb8 44.c5 Bh2 45.Rc6 Be5? 46.d7 Rg8 47.Re6 Rg3 48.Kc4 Bc7 49.Re8 Kb7 50.c6 Kb6 51.Rb8!! Ka7 52.Rb7 Ka8 53.Rc7 Rg4 54.Kc5 (54.Kc5 Rg8 55.Rc8 Ka7 56.b6 Ka6 57.Rg8 a4 58.Ra8) 1–0. Otte,Marco – Ten Thije,Hens, Wag.Intcomp., 1998.

5.Qf3? c6 6.a4 (6.Nc3!?=) 6...Be7+= 7.d4 Bg4 8.Qg3 h5 (better is 8...0-0–/+) 9.f3?? (better is 9.h3 h4 10.Qh2+=) 9...Ne4!!–+ 10.fe4 Bh4. Nilsson,G – Olsson,S, corr SSKK 2–68, 1965.

5.Qf3? Nbd7 6.Nc3 +=.

5.Nf3 b6 6.d4+= e4 7.Nfd2 d5 8.c4 Be7 (8...Bb4 9.a3 Bd2 10.Nd2+– (10.Kd2?! 0-0=)) 9.cd5 Qd5 10.Qc2 (10.Nc3 Qf5+–) 10...Bb7 11.Qc7 Bd6 12.Qc2 (12.Qb6? Nbd7 13.Bc4 Nb6 14.Bd5 Bd5–+) 12...Nbd7 13.Nc3 Qg5 14.h4 Qf5 15.Be2 0-0 16.0-0 Rfc8 17.Rac1 Rc7 18.Nc4 Rc4 19.Bc4 (19.Bc4 Qg4 20.Rfd1+–) 1–0. pcmvr – sasikumar, net–chess.com, 2019.

5.Nf3 c5 6.c4 Nbd7 7.Be2 g6 8.0-0 Bg7 9.d4 Qe7 10.d5 Ne4 11.Nfd2 Nd2 12.Nd2 f5 13.a4 Nf6 14.f3 Bh6 15.f4 e4 16.Ra2 Bd7 17.Qa1 Bg7 18.Bc3 b6= 19.Kf2 0-0-0 20.Ke1 Nh5 21.Bh5 Bc3 22.Qc3 gh5 23.Rh1 Rhg8 24.Nf1 h4 25.h3 Be8 26.Rf2 Bh5=+ 27.Qb2 Rg6 28.Rh2 Rdg8 29.Qc3 R8g7 30.Qb2 Qd8 31.Qc3 Qg8 32.Qb2 ½–½. Moench – Hubert, corr, 1972.

5.Nf3 Bd7 6.Bc4 Qe7 (6...e4 7.Nd4=) 7.Ng5 (7.0-0 Bg4 8.Be2 Nbd7=) 7...d5 8.Qf3? (8.Ba3 Qd8 9.Bf8 Kf8=+) 8...c6?? (8...Bg4!? 9.Qg3 dc4 10.Ba3-+) 9.bc6 (9.Ba3 e4 10.Qg3 c5=+) 9...bc6 (9...Bg4!? 10.Bd5 Bf3 11.Bf7 Kd8-+) 10.Be2 h6 11.Nh3 Na6 (11...Bg4!? 12.Qg3 Be2 13.Ke2 Nbd7-/+) 12.Qg3= Rb8 (12...Nb4 13.Na3 Bf5=) 13.Be5 (better 13.Qe5 Bh3 14.Ba6+=) 13...Ne4-+ 14.Bb8 Ng3 15.Bg3 Qb4 (better 15...Bh3!? 16.gh3 Nb4-/+) 16.Nc3=+ (16.Ba6? Qb2 17.0-0 Qa1-+) 16...Qb2 (16...Bh3 17.gh3 Qb7 18.Rb1=+) 17.0-0 (17.Rb1 Qc2 18.Ba6+=) 17...Qc2 (better 17...Bh3 18.Ba6 Bf5=) 18.Ba6+/- Be7 (18...Bh3 19.Rac1 Qd2 20.Rfd1+/-) 19.Rab1 0-0 20.Nf4 Qd2 21.Rbc1 (21.Nfe2 Bc8 22.Rfd1 Qd1 23.Nd1 Ba6+-) 21...Kh8? (better 21...Ba3!? 22.Nb1 Qa2 23.Na3 Qa3+/-) 22.Rfd1 Qb2 23.Ng6?? (better 23.Bd3+-) 23...fg6-+ 24.Ne4?? (better 24.Bd3-+) 24...de4 25.Rb1 Bf6 (better 25...Qa2 26.Ra1 Qe6 27.Ra5 Rf5-+) 26.Rb2+- Bb2 27.Rd7 Bf6 (27...Rf5+-) 28.Rd8 (better 28.Bb7+-) 28...Rd8-+ 29.Be2 (29.h4 Rd2 30.Bc4 Kh7-+) 29...Rf8 (better 29...Rd2 30.Ba6-+) 30.Bd1 Be7 (30...c5 31.Bc2 Re8 32.Bb3-+) 31.Be2? (better 31.Bc2-+) 31...Bf6 32.h4?? (32.Bd1 c5 33.Bc2-+) 32...Kh7 33.Bf4 (33.f3 Re8 34.Kf2 Rd8-+) 33…Rf7 0-1. opperwezen (2430) - FischyVishy (2280), Rated Three-check game, lichess.org, 2017.

5.Nf3 e4 6.Nd4 d5 7.c4 c5 8.bc6 bc6 9.cd5 cd5 10.d3 Qb6 11.Qd2 Ba6 12.Ba3 Bb4=+ 13.Bb4 ab4 14.de4 Bf1 15.Rf1 de4 16.Qc2 Nbd7 17.Nd2 Nc5 18.Nc4 Qa6–/+ 19.Nb2 Nd3 20.Nd3 ed3 21.Qb2 Ne4 22.Nf3 0-0 23.Qb4=+ f5 24.Nd2 Rfb8 25.Qd4 Qa5 26.Qd3 Rd8 (27.Qc4 Kh8–+) 0–1. Berkley,Stephen (1640) – Van Rooijen,Peter (1790), IECC, 2000.

5.Nf3 Be6 6.c4 Nbd7 7.d4 e4 8.Nfd2 c6 9.Nc3 cb5 10.Nb5 Nb6 11.Qc2 Rc8= c4 12.Na3 Bf5 13.Bc3 Nbd7 14.d5 Nc5 15.Bd4 Nfd7 16.Nb3 Be7 17.Bg7+= Rg8 18.Bd4 Nd3 19.Bd3 ed3 20.Qd1 Rg2= 21.Qf3 Rg5 22.e4 Ne5 23.Qe3 Bg4 24.Nd2 Be2 25.h4 Rg4 26.Rb1 Qd7 27.Rb3 Qa4 28.Bb2 b5 29.Nb5 Qa2 30.Nd4 Nc4 31.Nc4 Rc4 32.Bc3? Bf6 33.e5? Be5–+ 34.f4 Rf4 35.Rg1 Bg4 36.Rf1 d2! (37.Qd2 Re4 (37...Bd4 38.Qa2 Re4 39.Kd2 Re2 40.Kd3 Ra2 41.Kc4 Be2 42.Kd4 Bf1 43.Rb8 Ke7 44.Rb7 Kf8 45.Rb8 Kg7 46.Rb6=+) 38.Kf2 Bd4 39.Kg3 Qb3–+; 36...Rfd4 37.Rb8 Bc8 38.Bd4 Rc1 39.Qc1 Qe2#) 0–1. Sviridov – Duthilleul,Jean, corr, 1989.

5.g3 Bg4 6.Bg2?? (6.Be2 Be2 7.Ne2 Be7=+) 6...Qc8 (6...Bd1 7.Kd1 d5 8.c4–+) 7.h3?? (7.Ne2 Bh3 8.0-0 Bg2 9.Kg2 Be7=) 7...Be6 (better 7...Bd1 8.Kd1 Qf5–+) 8.d3 (8.Nf3 h6+=) 8...h6. Serebriskij – Savtjenko, SU, 1959.

6.c4 c6 7.d4 e4 8.Ne2 d5 9.c5 b6 10.Ba3 0-0 11.cb6 Ba3 12.Ra3 cb5 13.ab5 Nbd7 14.Nec3 Nb6 15.Nd2 Ng4 16.Be2 Qh4 17.g3 Qh3 18.Bf1 Qh6 19.Ne2 Qd6 20.Qa1=+ Qb4 21.Nc3 Be6 22.Be2 Rfc8 23.0-0 a4 24.Rb1 Qa5 25.Qb2 Rc7 26.Rba1 Rac8= 27.Ndb1 Nc4 28.Bc4+= Rc4 29.Ra4 Ra4 30.Ra4 Qd8 31.b6 Rb8 32.b7 Bd7 33.Ra7 Bc6 34.Na4 Qd6 35.Nc5 Qh6? 36.h4+– g5 37.Qb6 Qf6 38.Ra2 Qf3 39.Nc3 Ne3 40.fe3 Qe3 41.Rf2?? (41...Qg3 42.Kf1 Qh3 43.Rg2 Qf3 44.Kg1 Qe3 45.Kh2 Qf4 46.Rg3 Qf2 47.Kh3 Qf1 48.Kg4 Qf4 49.Kh3 Qf1 50.Kh2 Qf2 51.Rg2 Qf4 52.Kh1 Qf1 53.Kh2 Qf4=; better is 41.Kh2 gh4 42.Rg2+–) 1–0. Lipovan,V – Heindrich,J, corr ICCF Eu 1e kl, 1992.

6.Nf3 0-0 7.d4 ed4 (7...e4 8.Nfd2+=) 8.Nd4 Bg4 9.Be2 Qd7 10.h3 (10.Bg4 Ng4 11.0-0 d5=) 10...Be2 11.Qe2 c5 12.Nf3 b6 13.0-0 d5 14.c4 dc4 15.Qc4 Qd6 16.Nc3 Bd8 (16...Nbd7 17.Rfd1 Qe6 18.Qe6 fe6 19.Ne2+=) 17.Rfd1+/- Qe7 18.Nd5 Nd5 19.Qd5 Qa7?? (better is 19...Ra7+/-) 20.Qd8+– Rd8 (20...f6 21.Qd5 Rf7+–) 21.Rd8 1–0. chybol3 – sonmip, playok.com, 2012.

6.Nf3 c6 7.c4 0-0 8.Nc3 Bg4 9.h3 Bh5 10.Be2 Nbd7 11.0-0 Nc5 (11...Rc8 12.d4=) 12.d4+= ed4 13.Nd4 (worse 13.Qd4 Nb3 14.Qf4 Na1 15.Ra1 Bg6–/+) 13...Be2 14.Nce2 Qc7 15.Nf5 Rfe8 16.Ne7 (16.Neg3 Ncd7+=) 16...Qe7= 17.Nd4 Rac8 18.Nf5 Qe6 19.Qd6?? (19.Qf3=) 19...Nce4?? (19...Qf5 20.Bf6 Re6–+ (worse 20...Qf6 21.Qc5 cb5 22.Qb5+–; 20...gf6?! 21.bc6 Rc6 22.Qd1–+)) 20.Qe6 (20.Qf4+–) 20...Re6 (20...fe6!? 21.Nd4 Nd2+=) 21.Nd4 Rd6 22.Ba3 (22.f3 Nd2 23.Rfc1 c5+–) 22...Rd7 23.Nf5 (23.bc6 bc6 24.Rfb1 c5+–) 23...c5 24.Rfd1 Rd1 (24...Rcd8 25.Rd7 Rd7 26.f3+–) 25.Rd1+– Re8 (25...Kf8 26.Bb2 g6 27.Nh6+–) 26.Bb2 h6? (26...g6 27.Ng3+–) 27.Bf6 (better 27.f3 Ng5 28.Bf6 gf6 29.Rd7+–) 27...Nf6 28.Rd6 Ne4 (28...Re5 29.g4+–) 29.Rd7 b6 30.Ne7 Kf8 31.Nd5 Nf6 32.Nf6 gf6 33.Rd6 Re4 34.Rb6 Rc4 35.Rc6 Ra4 36.Rf6 (better 36.Rc5!? Rb4 37.b6+–) 36...Rb4+= 37.Rh6 a4? (37...Rb1 38.Kh2 Rb5 39.Kg3=) 38.b6 (38.Ra6 c4 39.Kf1 c3+–) 38...a3? (38...Kg7 39.Rh5 a3 40.Rc5 a2–/+) 39.b7?? (39.Rh8 Ke7 40.Ra8 Rb6 41.Ra3 Rb1 42.Kh2 Rc1+–) 39...a2?? (better 39...Rb7 40.Ra6 Rb1 41.Kh2 Ra1=) 40.Rh8 Ke7 41.b8Q?? (better 41.Ra8+–) 41...Rb8 42.Rb8 a1Q 43.Kh2 Qe5 (43...Qe5 44.g3 Qb8–+) 0–1. Abdullaevich (1845) – Sanity64 (1895), lichess.org, 2020.

6.a3 c6 7.Nc3 cb5 8.cb5 Bd7 9.Na4 Qa5 10.Nc3 d5 11.Nf3 Bd6 12.Be2 0-0 13.0-0 Rd8 14.a4 (14.Qb3 e4 15.Nd4 Bc8+/-) 14...h6 (14...e4 15.Nd4+=) 15.Qb3 Be6 16.d4 e4 17.Nd2 Nbd7 18.Ba3 Bb8 19.Be7 Qc7 20.g3 Rc8 21.Rac1 Nb6 22.Bf6+– gf6 23.Na2 Qd7 24.Rc8 Nc8 25.Rc1 Nd6 26.Nb4 Nf5 27.Bg4 Nd4? 28.Be6?? Nb3+= 29.Bd7 Nc1 30.b6?? Bd6?? 31.Nd5+– Rd8 32.Nf6 Kg7 33.Nde4 Bb4? 34.Bb5+– 1–0. ludice (1710) – leverlek, kurnik, 2011.

6.a3 c6 7.Nc3 Bd7 8.Nf3 Be7 9.d4 e4 10.Nd2 d5 11.c5 cb5 12.Bb5 0-0 13.Ba4 Qc7 14.Qb3 Ba4 15.Na4 Ng4 16.Nb6 Ra6 17.Qd5 Rb6 18.cb6 Qb6 19.Rb1 Qg6 20.Qe4 1–0. lendzior (1645) – lisek77 (1625), kurnik, 2014.

6.d4 Nbd7 7.a3 ed4 8.ed4 g6 9.Be2 Bg7 10.Nf3 0-0 11.0-0 d5 12.Nc3 dc4 13.Bc4 Nb6 14.Ba2 Bg4 15.h3 Bf3 16.Qf3 Qd4 17.Qb7 Qd2 18.Rab1 Rac8 19.Rfd1 Qg5 20.Ne4 Ne4 21.Qe4 Rce8 22.Qc2 Bb2 23.Rb2 Qf4 24.Rb4 Qe5 25.Qd3 Qe2 26.Rd2 Qe1 27.Kh2 Qe5 28.g3 Rd8 29.Rd4 Rd4 30.Qd4 Qd4 31.Rd4 Re8 32.Rf4 Re7 33.f3 Kg7 34.Re4 Re4 35.fe4 f6 36.Kg2 Nc8 37.Kf3 Nd6 38.Be6 Nb5 39.Bd7 Na3 40.Ba4 Nc4 41.Bc6 Ne5 0–1. popovicigelu – natuska80wet (1970), kurnik, 2012.

6.a4 Be6 7.Nf3 d5 (7...Be7!?=) 8.cd5+/- Bd5 9.Be2 (9.Be5 Nbd7+/-) 9...Bd6 (9...e4 10.Ne5=) 10.0-0 0-0 11.Nc3 Bb7 12.d4 ed4 13.Nd4 Qe7 14.Bf3 Bf3 15.Qf3 (worse is 15.gf3 Qd7=) 15...Nbd7 16.Nc6 Qe6 17.Rfd1 Ne5 18.Ne5 Be5 19.Rab1 Qb3 (19...Rad8 20.Rd8 Rd8 21.Rd1=) 20.e4 Bc3? (20...Rad8 21.Nd5 Qf3 22.gf3 Bb2 23.Rb2 Nd5 24.Rbd2=) 21.Qc3?? (better is 21.Bc3!? Qa4 22.Bf6 gf6 23.Qg3 Kh8 24.Qc7 Qe4 25.Qb6+/-) 21...Qa4 22.e5 (22.Qc7 Ne4 23.Qb6 Rfe8+=) 22...Ne4 23.Qc7+/- Rac8 24.Qb6+– h6 25.e6 Rb8? 26.ef7 Kf7 27.Rd7 Kg8 28.Qe6 Kh8 29.Bg7 Kh7 30.Bf8 Kh8 31.Qe5 Kg8 32.Qg7 1–0. thecat74 – f00boo, kurnik, 2012.

6.Nc3 Bb7 7.d4 ed4 8.ed4 d5 9.Nf3 Bb4 10.Qe2 Qe7 11.cd5 Ne4 12.Rc1 Bd5 13.Nd2 Nc3 14.Bc3 0-0 15.Qe7 Be7 16.Ba1 Ba2 17.Rc7 Re8 18.Be2 Bd5 19.Nc4 Bd8 20.Rc8 Bg2 21.Nd6 Nd7 22.Ra8 Ba8 (< 22...Bh1 23.Ra7 Re7 24.Nf5 Re2 25.Ke2+/-) 23.d5 Rf8 24.Nf5 Bf6 25.Bf6 Nf6 26.Rg1 g6 27.Ne7 Kg7 28.Nc6 Nd5 29.Kd2 Re8 30.Bf3 Nf4 31.Rg4 Nh3 32.Rg2 f5 33.Kc2 Kf6 34.Kc3 g5 35.Kd2 h6 36.Kc3 Re1 37.Nd4 Bf3 38.Nf3 Rh1 39.Kc4 g4 40.Nd4 Nf4 41.Rg3 Rh2 42.f3 Rh3 43.Rg1 g3 44.Nc2 Rh4 45.Kb3 Ne2 46.Rg2 Rh2 47.Ne3 Ke5 48.Kc2 h5 49.Kd1 f4 50.Re2 Re2 51.Ke2 fe3 52.Ke3 a4 (53.f4 Kf5–+) 0–1. Andersson,Egart – Benassi,Aspasio, TMK/A004, 1999.

6.Nc3 Bb7 7.Nf3 Nbd7 8.Be2 e4 9.Nd4 Ne5 10.Qc2 Be7 11.0-0 0-0 12.Nf5 Qd7 13.Ng3 Nf3 (13...Nf3 14.Kh1 Nh4+=). Grund,Karl – Katona, corr ICCF EU–H–GT–12 (year?)

6.Nc3 Bb7 7.Nf3 Be7 8.Be2 0-0 9.0-0 c5 10.d4 e4 (10...Nbd7 11.Qc2=) 11.Nd2 cd4 12.ed4 d5 13.cd5 Nd5 (13...Bd5 14.Qc2+=) 14.Nd5 (14.Nde4!? Re8 15.Bc4 Nc3 16.Nc3+–) 14...Qd5 15.Bc4 Qg5 16.Qe2 e3 (16...Bd6 17.Ne4 Qg6 18.d5+–) 17.Nf3 (17.fe3 Nd7+–) 17...Bf3 (17...Qg6 18.Qe3 Nd7 19.Bd3+–) 18.Qf3+– ef2 19.Rf2 (19.Kf2?! Nd7+=) 19...Bf6?? (better 19...Ra7+–) 20.Qa8 Nd7 1–0. e4_e5_f4 (1710) – Anielpla (1720), lichess.org, 2020.

6.Nc3 Bb7 7.Nf3 Be7 8.Be2 0-0 9.0-0 Nbd7 10.d4 ed4 11.ed4 d5 12.Ne5 dc4 13.Bc4 Ne5 14.de5 Qd1 (14...Ne4!?+/-) 15.Rad1 (15.Nd1?! Nd5+=) 15...Ng4 16.Nd5 Bc5 17.h3 Nf2 18.Rf2 Rad8 19.Nc3 (19.Kf1!? Bf2 20.Kf2+-) 19...Rd1 20.Nd1 Rd8 21.Nc3?? (better is 21.Bf7 Kh8 22.Bh5+/-) 21...Rd2-+ 22.Bf7 Kh8 23.e6 (23.Na4 Bf2 (23...Rf2?! 24.Nc5 Rg2 25.Kf1 bc5 26.e6=) 24.Kf1 Bg3-+) 23...Rf2 24.Ne4 (24.Na4 Be3 25.Bc1-+) 24...Be4 25.e7 Rf7 (25...Rb2 26.Kf1 Bd3 27.Ke1 Bb4 28.Kd1 Rb1) 26.Kh2-+ Re7 0-1. typ48 - pantata1, kurnik, 2013.

6.Nc3 Be7 7.Be2 0-0 8.Bf3 Ra7 9.Nge2 Nbd7 10.0-0 Nc5 11.d3 e4 (11...Bf5!? 12.d4 Nd3=) 12.de4 Nce4?? (better is 12...a4+/-) 13.Ne4+-.

6.Nc3 Be7 7.Nf3 0-0 8.d4 Nbd7 9.Be2 Re8 10.0-0 Bb7 11.Qc2 Ng4 (11...ed4 12.Nd4 Nc5 13.Nf5+=) 12.h3 (12.Nd5 Ngf6+=) 12...Nh6 (12...Ngf6 13.Qf5+=) 13.Rad1 Qc8 (13...Bf6 14.Nd5+/-) 14.Nd5 Bd8 (14...ed4 15.Nd4 Nc5 16.Bf3+/-) 15.de5 Bd5 (15...Ne5 16.Ne5 de5 17.Bd3+/-) 16.cd5 (16.Rd5 Ne5 17.Ne5 de5 18.Be5 c6 19.bc6 Qc6+-) 16...de5 17.d6 (better 17.Bd3!? g6 18.e4+-) 17...cd6 18.Qc8 Rc8 19.Rd6 Rc2 20.Rd7 Rb2 21.Bc4 Bf6 22.g4 g5 (22...e4!? 23.g5 ef3 24.gf6 gf6+/-) 23.h4+/- Ng4 (23...gh4 24.g5 e4 25.gh6 (25.gf6?! ef3 26.Rd6 Rb4+=) 25...ef3 26.Bf7 Kf8 27.Be8 Ke8 28.Rh7 Rb5 29.Rc1+-) 24.Bf7+- Kf8 25.Be8 Ke8 26.Rh7 gh4 27.Nh4 Rb5 (27...Bh4 28.Rh4 Nf6+-) 28.Nf5 e4 (28...Rc5 29.f3 Ne3 30.Ne3 Bg5+-) 29.Nd6 (29.Nd6 Kf8 30.Nb5+-) 1-0. zembelek (2115) - ivan1956 (1915), Rated Blitz game, lichess.org, 2013.

6.Nc3 g6 7.Be2 Bb7 8.Nf3 Bg7 9.d4 Nbd7 10.0-0 0-0 11.Qc2 Re8 12.Nd2 ed4 13.ed4 d5 14.Bf3 Nf8 15.cd5 Nd5 (15...Bd5? 16.Nd5 Nd5 17.Qc6+–) 16.Qb3 Nc3 17.Bb7 Ne2 18.Kh1 Nd4 19.Bd4 Qd4 20.Nf3 (20.Ba8 Qd2 21.Rad1 Qb4+/-) 20...Qb4 21.Ba8 Qb3 22.ab3 Ra8 (< 22...Ba1 23.Bc6 Re2 24.Ra1 Rf2 25.Kg1+/-) 23.Ra4 Rd8 24.Rc4 Ne6 25.b4 ab4 (Better is 25...a4–/+) 26.Rb4+= Rd5 27.g3 Kf8 28.Rc1 Ke7 29.Kg2 h6 30.Ne1 Nc5 31.Rc2 Be5 32.Re2 Kd7 33.Nc2 Bd6 34.Rb2 Na4 35.Rb3 ½–½. arkady08 (2030) – unikum (2050), ChessWorld.net, 2003.

6.d3 Bb7 7.Nf3 Be7 8.Be2 0-0 9.0-0 Nbd7 10.Nc3 h6 11.a4 d5 (better is 11...Qe8!?=) 12.cd5+/- Nd5 13.Nd5 Bd5 14.e4 Bb7 15.Ne5 Ne5 16.Be5 Bc5 17.d4 Bb4 18.Rc1 Bd6 19.Bd6 Qd6 20.e5 Qg6 21.Bg4 Bg2 22.Kg2 h5 23.Rc7 hg4 24.Qc2 Qh5 25.Rd1 Qh3 26.Kg1 g6? (better is 26...Qh5+-) 27.e6! Kg7 (27...fe6 28.Qg6) 28.ef7 Rh8 29.f8Q Kf8 30.Rc8 Rc8 31.Qc8 Kg7 32.Qc7 Kg8 (32...Kh6 33.Qf4 Kh7+-) 33.Re1 (33.Qb6?! Qh2 34.Kf1 Qh1 35.Ke2 Qf3 36.Kd2 Qf2 37.Kc1 Qe3 38.Kb1 Qb3 39.Kc1 Qc3 (39...Qa4?? 40.Qg6 Kf8 41.Rf1 Ke7 42.Rf7 Kd8 43.Qd6 Ke8 44.Qe7) 40.Kb1 Qb3 41.Kc1 Qc3 (41...Qa4 42.Qg6 Kf8 43.Rf1 Ke7 44.Rf7 Kd8 45.Qd6 Ke8 46.Qe7) 42.Kb1 Qb3=) 33...Kf8 (33...Qh2 34.Qh2 Rh2 35.Kh2 g3 36.Kg3 Kf7+-) 34.Qf4 Kg7 (34...Kg8 35.Re8 Kg7 36.Qe5 Kh7 37.Qh8) 35.Re7 (35…Kg8 36.Qf7) 1-0. Bonetti,Shane - patzerpower (1710), ICC, 2002.

6.d3 Nbd7 7.Nf3 (7.Be2 Bb7 8.Nf3 a4=) 7...Bb7 (7...a4 8.a3=) 8.Be2+= h6 (8...Be7 9.0-0=) 9.0-0 Be7 10.Nh4 0-0 11.Nd2 (11.Nf5 Re8+=) 11...Qc8 (11...a4 12.Nf5+=) 12.Ndf3 (12.Nf5 Re8+=) 12...c6 (12...Re8 13.Nf5=) 13.Nf5+= Re8 14.Ne7 (14.bc6 Bc6 15.d4 Qc7+=) 14...Re7= 15.Nh4 cb5 16.Nf5 Re6 17.cb5 Ne8 (17...Qe8 18.Rc1+=) 18.Rc1 Qb8 (18...Qd8 19.f4+=) 19.f4 (better is 19.d4+/-) 19...Rf6? (better is 19...Qd8+/-) 20.Ne7+– Kf8 (20...Kh7 21.Nc6 Bc6 22.bc6+– (worse is 22.Rc6 Qd8+–)) 21.Nc6 Bc6 22.bc6 (22.Rc6?! Re6+–) 22...Nc5 23.d4 ed4 24.ed4 Na6 25.Ba6 Ra6 26.Qd3 Nc7 27.Qh7 Ra8 28.d5! Rg6 29.Qh8 Ke7 30.Rfe1 Ne6 31.Qb8 Rb8 32.Bd4 Kf8 33.de6 Re6 34.Re6 fe6 35.Bb6! Rc8 36.Ba5 g5 37.fg5 hg5 38.Bb6 e5 39.a4 Ke7 40.a5 e4 41.Kf2 Ke6 42.a6 d5 43.Bc7 Rc7 44.a7! Ra7 45.c7 Rc7 46.Rc7 Kd6 47.Rg7 Kc5 48.Rg5 Kd4 49.h4 e3 50.Ke2 Ke4 51.h5 d4 52.Rg4 Kd5 53.Rd4! (53.Rd4 Kd4 54.h6+–) 1–0. Trkn – the Dave, itsyourturn.com, 2000.

6.d3 Be7 7.Be2 =.

6.d4 ed4 7.ed4 Bb7 8.Nf3 Be7 (8...d5 9.Nc3+=) 9.Bd3+/- 0-0 10.0-0 Be4 11.Nc3 Bd3 12.Qd3 Nbd7 13.Rfe1 h6 14.h3 Nh7 (14...Re8 15.Re3+/-) 15.Nd5 Re8 16.Ne7 (16.Qe4 Bg5 17.Qc2 Be7+–) 16...Re7+/- 17.Re7 Qe7 18.Re1 Qf8 19.Qf5 (19.Qe4 Nhf6 20.Qc6 Kh7+/-) 19...Ndf6 20.g4 (20.Bc1 Re8+=) 20...Re8= 21.Re8 Qe8 22.d5 Ne4 23.Kg2 Neg5 24.Ng5 Ng5 25.h4 Qe4 26.Qe4 Ne4 27.Bc1 Kf8 28.Kf3 Nc5 29.Ke3 Ke7 30.f4 g6 31.g5 hg5 32.fg5 f5 33.Bb2 Kf7 34.Bd4 Ne4 35.Kd3 Ng3 36.Bf6 Nh5?? 37.Bd8+– Ng3 38.Bc7 Ne4 39.Bb6 a4 40.Bd4 Ng3 41.b6 (41.b6 Ke7 42.b7 Ne4 43.b8Q Kf7 44.Qc8 a3 45.Qc7 Kf8 46.Bf6 Nc5 47.Ke2 Nd7 48.Qd8 Kf7 49.Qe7 Kg8 50.Qg7#) 1–0. kaasparov – salafistfuzzy, kurnik, 2013.

6.d4 ed4 7.Bd4 Bb7 +=.

6.d4 ed4 7.Bd4 Be7 8.Nd2 0-0 9.Bd3 Bb7 10.Ngf3 Nbd7 11.0-0 Re8 12.Qc2 Nf8 (12...Nc5 13.Rad1=) 13.a3 Ng6 14.Ng5 Nd7 15.Nge4 Nde5 (15...Nc5 16.Bc5 bc5 17.Rad1=) 16.Be2 f5 (16...Nh4 17.f4 Nd7 18.f5+–) 17.Ng3 (17.Nc3!?+=) 17...f4= 18.Nf5 Bf6 19.Rae1 Qd7 20.e4 (20.Be5 Re5 (worse is 20...de5 21.c5 bc5 22.e4+=; worse is 20...Ne5 21.ef4 Ng6 22.g3+/-) 21.Bg4 Qf7+=) 20...Ne7 21.Ne7 Re7 (worse is 21...Be7 22.c5 bc5 23.Be5 de5 24.Nb3+=) 22.f3 Rae8 23.Qc3 Qe6 24.Nb3 Qf7 25.a4 g5 (25...Re6+=) 26.g4? (better is 26.Qd2!?=) 26...h5–/+ 27.h3 hg4 28.hg4 Qg6 29.Kg2 Rh7 30.Rh1 Ree7 31.Nc1? Rh4?? 32.Rh4+= gh4 33.Kf2?? h3 34.Rh1 Rh7 35.Qd2?? Qg5 36.Kf1–/+ h2 37.Qa2?? Kg7 38.Bf2?? Rh3 39.Kg2 Qh6 40.c5 dc5 41.Qe6 (41.Qe6 Be4! 42.g5 Qg5 43.Kh3 Bf5 44.Qf5 Qf5 45.Kh2–+) 1–0. slave81 (1970) – magda1500 (1970), kurnik, 2012.

6.d4 e4 =.

6.Be2 Bb7 7.Nf3 Be7 8.0-0 0-0 9.Nc3 Nbd7 10.d4 Ne8 (10...g6 11.Qc2+=) 11.Qc2+/- f5 (11...Nef6 12.Rad1 ed4 13.ed4+/-) 12.de5 (12.e4 g6+/-) 12...de5 13.Rfd1 Bd6 14.Nd5 e4 15.Nd4 Bd5 (15...Nc5!?+/-) 16.cd5+– Nc5 (16...Qc8 17.f3+–) 17.Ne6 Ne6 18.de6 Qe7 19.Qc6 (19.Bc4 Rd8+–) 19...Rd8 20.Bc4 Kh8 (20...a4 21.Rac1+–) 21.g3 (21.h3!? Nf6+–) 21...Nf6 22.Rac1 Qe8 23.Bb3 (23.Kg2 a4+–) 23...a4+/- 24.Ba4 (24.Qe8!? Rfe8 25.Bc4+/-) 24...Qe6+= 25.Bb3 Qe7 26.a4 (26.Qc4 Ng4+=) 26...h6 27.Rd2 Bg3?? (better is 27...Nd7+=) 28.Rd8+– Bh2 (28...Bf2 29.Kf2 Qd8+–) 29.Kh2 Ng4 (29...Qd8 30.Qc7 Qd2+–) 30.Kg1 Qd8 31.Qc7 Qg5 32.Qf4 Qg6 (32...Qf4 33.ef4 Rd8 34.Rc7+–) 33.Rc6 Nf6 34.Qg3 Qe8 (34...Qg3 35.fg3 Kh7 36.Rb6 Rd8+–) 35.Bf6 (35.Rc7 Rf7 36.Rf7 Qf7 37.Bf7 f4 38.Qf4 Kh7 39.Qf5 Kh8 40.Bf6 gf6 41.Qg4 Kh7 42.Qg8#) 35...gf6 36.Rc7 (36.Rc7 Rg8 37.Bg8 Qg8 38.Qg8 Kg8 39.a5 f4 40.ab6 fe3 41.fe3 Kf8 42.b7 Ke8 43.b8Q#) 1–0. Cernik,Lukas (2180) – Stolz,Lubor (1965), CZE–chT3A Middle, 2005.

6.Be2 Bb7 7.Nf3 Be7 8.0-0 Nbd7 9.d4 ed4 10.Nd4 0-0 11.Qd3 (11.Nc3 Re8+=) 11...Ne5 12.Qc2 Re8 13.f4 Ng6 (13...Neg4 14.Qc1=) 14.Bf3 Bf3 15.Rf3 (worse 15.Nf3 Ng4 16.Re1 Bf6-/+) 15...d5 16.Nc6 Qd7 17.Nd2 dc4 (17...a4 18.Rd1+/-) 18.Nc4+/- Bc5 (better 18...Qd5 19.f5 Nf8+/- (19...Qb5? 20.fg6 hg6 21.Ne7 Re7 22.Bf6 gf6 23.Rf6+-)) 19.N4e5?? (better 19.f5!? Ne7 20.Bf6 gf6 21.Rd1+-) 19...Qc8 (19...Ne5!? 20.Be5 Ng4=) 20.Qb3 Rf8 (20...Nh8 21.Rd1+/-) 21.Rd1 (21.Ng6 hg6 22.f5 a4+-) 21...Ng4 (21...Ne5 22.Be5 Ng4 23.Bd4+/-) 22.Bd4 (better 22.Nd7 Re8 23.Qc3+-) 22...Bd4?? (22...N4e5 23.fe5 Be7 24.Rdf1+/-) 23.Rd4 (better 23.Ng6 hg6 24.Ne7 (24.Nd4?! Re8+/-; 24.Rd4?! Re8+-; 24.ed4?! Re8+/-) 24...Kh7 25.Rh3 (25.Rd4?! Qe8 26.Nd5 c5 27.bc6 Qc6+/-; 25.ed4?! Qd7 26.Nc6 Rae8+/-) 25...Nh6 26.Nc8+- (26.ed4?! Qg4+/-; 26.Rd4?! Qe8 27.Nc6 f5+-)) 23...N4e5+= 24.Ne5 (24.fe5 Qe8+=) 24...Ne5= 25.fe5 Qb7?? (better 25...c5 26.bc6 Qc6=) 26.Rd7+- Rad8?? (26...Kh8 27.Rff7 Rf7 28.Qf7+- (28.Rf7?! Qe4+-)) 27.Rff7 (27.Qf7 Rf7 28.Rd8 Rf8 29.Rff8) 27...Kh8?? (27...Rd7 28.Rd7 Kh8+-) 28.e6 (28.Qd3 Rg8 29.Rd8 Qa8 30.Rg7 Kg7 31.Rd7 Kh6 32.Rh7 Kg5 33.h4 Kg4 34.Qd7 Kg3 35.Qh3) 28...Qe4 (28...Rde8 29.Qd3 Rf7 30.ef7+-) 29.e7 (29.e7 Rg8 30.ed8Q Qa8 31.Rg7 Qg2 32.Kg2 Rd8 33.Rh7; 29.Rc7?! Rg8 30.e7 Rd2+-) 1-0. zembelek (2015) - Bordok (2030), Rated Blitz game, lichess.org, 2014.

6.Nf3 c6 7.bc6 Nc6 8.d4 ed4 9.ed4 (9.Nd4 Bb7+=) 9...d5= 10.Nbd2 Bb4 11.a3 Qe7 12.Be2 Bd2 13.Nd2 0-0 14.0-0 dc4 15.Nc4 b5 16.Ne5 Bd7 (16...Na7 17.Qd2+=) 17.Bf3 (17.Bb5!? Rab8 18.Bc6 (18.Nd7?! Rb5 19.Nf8 Rb2+=) 18...Rb2 19.Nc4 Bc6 20.Nb2+/-) 17...Rac8 18.Re1 Ne5 19.de5 Ne8 20.Qd5 (20.Qd2 Bc6 21.Bc6 Rc6+/-) 20...Nc7 (20...Bc6 21.Qb3 Bf3 22.Qf3=) 21.Qe4 (21.Qd6 Qd6 22.ed6 Ne6+=) 21...Be6 22.h4 (better 22.Rac1!?=) 22...Bd5-/+ 23.Qg4 Bf3 24.gf3 Ne6 25.f4 (25.Rac1 Rc1 26.Rc1 Qd7-/+) 25...Rc4 26.Bc1 Rd8 27.Be3 Kh8 (27...Nd4 28.Red1-/+) 28.Rac1 (28.Red1 Rd1 29.Rd1 h6=+ (29...Qa3? 30.Qe6 Qf8 31.Qb6+-)) 28...Rdc8 (28...Ra4 29.Rc3-/+) 29.h5 (29.Rc4 Rc4 (worse 29...bc4 30.f5+/-) 30.Rb1 Qe8=+) 29...h6 (29...Qa3!? 30.Rc4 Rc4-/+ (30...bc4?! 31.f5 Qb4 32.Rd1=)) 30.Rc4=+ Rc4 (worse 30...bc4 31.f5 Ng5 32.Bg5 Qg5 33.Qg5 hg5 34.Kf1+=) 31.Rd1? (31.Rb1 b4=+) 31...b4 (better 31...Qa3 32.Qf5 Qe7-/+) 32.Rd8?? (better 32.ab4 ab4 33.Qe2=+) 32...Nd8-+ 33.ab4 ab4 34.Qd1 Ne6 (better 34...Qh4 35.Qe2 b3 36.Qc4 Qg4 37.Kh2 Qh5 38.Kg3 Qg6 39.Kh2-+) 35.Kf1 (35.Qd3 Qc7 36.f5 Rg4 37.Kf1 Nf4 38.Bf4 Rf4-+) 35...Qc7 (35...Nf4 36.Bf4 Rf4 37.f3-+) 36.Kg2 (36.f5 Nf4 37.f6 Qe5 38.Qd8 Kh7 39.Bf4 Rf4-+) 36...Nf4 37.Bf4 Rf4 38.Qd5 (38.e6 fe6 39.Qd3 Qc5-+) 38...b3! 39.Qb3 Rc4 (39...Qe5 40.Qb7 Qg5 41.Kf1-+) 40.Qb5 (40.Qd1 Rc5-+) 40...Qc6 (better 40...Rc5 41.Qd3-+) 41.Qc6 Rc6 42.Kf3 (42.Kg3 Kh7-+) 42...Re6 (42...f6 43.ef6 Rf6 44.Kg2-+) 43.Ke4 f6 44.f4 fe5 45.f5 (45.fe5 g6 46.hg6 Kg7-+) 45...Rf6 (better 45...Re8!? 46.Kd3-+) 46.Ke5 Kg8 47.Kf4 Kf7 48.Ke5 Rb6 49.Ke4 Rb5 50.Kf4 Kf6 51.Ke4 Rf5 52.Ke3 Rh5 53.Ke4 Rf5 54.Kd4 g5 55.Ke4 g4 56.Ke3 (56.Kd3 g3 57.Kd2 g2 58.Ke3 g1Q 59.Kd3 Qg3 60.Kd4 Rf4 61.Kc5 Qc3 62.Kb5 Rb4 63.Ka6 Qa1) 56...g3 57.Ke2 g2 58.Ke3 g1Q 59.Ke4 (59.Kd3 Qg3 60.Kd4 Rf4 61.Kc5 Qc3 62.Kb5 Rb4 63.Ka6 Qa1) 59...Qg4 60.Ke3 Rf3 61.Ke2 (61.Kd2 Qg2 62.Ke1 Rf1) 61...Qg2 62.Ke1 Rf1 0-1. jhonores (2200) - Gricricri (2210), Rated Blitz game, lichess.org, 2020.

6.Nf3 e4 7.Nd4+= d5 (7...Bb7 8.Nc3+=) 8.Nc3 (8.cd5 Qd5 9.Nc3 Qb7+=) 8...dc4 (8...Bc5 9.Nd5 Nd5 10.cd5 Qd5 11.Qc2+/-) 9.Bc4 Bb7 10.Qb3 Qd7 11.Rc1 (11.0-0 Bb4+/-) 11...Bb4 (11...Bc5 12.Na4+=) 12.a3 Bc3 13.Bc3 0-0 14.Ne6 Re8 (14...Rc8 15.Bf6 gf6 16.Nf4+/-) 15.Bf6 gf6 (15...fe6 16.Be5 Bd5 17.Bd5 Qd5 18.Qd5 ed5 19.Bc7+–) 16.Nf4 Qe7 (16...a4 17.Qb2 Qd6 18.d3+/-) 17.0-0 Rd8 (17...a4 18.Qc3 Qe5 19.d4 ed3 20.Rfd1+–) 18.d4 ed3 (18...a4 19.Qb2+–) 19.Bd3 c6 (19...a4 20.Qb1+–) 20.Qd1 (20.Rfd1 a4 21.Qb1 cb5 22.Bh7 Kg7 23.Nh5 Kh8 24.Rd8 Qd8+–) 20...c5 (20...Kf8 21.bc6 Bc6 22.Qb3+–) 21.Qg4 Kh8 (21...Kf8 22.Rfd1 Nd7 23.Bh7+–) 22.Qf5 Rd3 23.Qd3 (23.Qd3 Be4 24.Qc3+–) 1–0. Koskinen,Erkki – Puronaho,Aarno, corr Finland, 1976.

6.Nf3 Bf5 7.d4 e4 8.Qc2 =.

6.Nf3 Bg4 7.Be2 Be7 8.0-0 0-0 9.d3 h6 10.Nbd2 Nbd7 11.h3 Bh5 12.Rc1 Nc5 13.d4 Na4? (better is 13...ed4 14.Nd4 Bg6+=) 14.Ba1 Bf3? (better is 14...e4 15.g4 ef3 16.Bf3 Bg6 17.Ba8 Qa8 18.Qa4 Ne4 19.Ne4 Qe4+–) 15.Bf3 (15.Nf3?! Nc5 16.dc5 bc5+–; 15.gf3?! Nc5 16.dc5 bc5+–) 15...e4 (15...d5 16.Qa4 e4 17.Be2+–) 16.Ne4 (16.Qa4?! ef3 17.Nf3 Re8+/-) 16...Nc5 17.dc5 Ne4 18.Be4 Rb8 19.cd6 Bd6 20.Qc2 Qg5 21.Bf3 f5 22.Qd3 Rbd8 23.Qe2 f4 24.e4 Bc5 25.Rcd1 Kh8 26.Rd8 Rd8 27.Rd1 a4 28.Rd8 Qd8 29.Qd1 Qd1 30.Bd1 a3 31.Be5 Bd6 32.Bd6 cd6 33.f3 g5 34.Kf2 Kg7 35.Ke2 Kf6 36.Kd3 Ke5 37.Kc3 h5 38.Be2 g4 39.hg4 hg4 40.fg4 Ke4 41.Bf3 Ke5 42.Kd3 Kf6 43.Kd4 Ke6 44.Ke4 (44.Ke4 Kf6 45.Kd5+–) 1–0. ourang – ramo56, kurnik, 2012.

6.Nf3 g6 7.Be2 (7.d4 e4 8.Nfd2 Bg7+=) 7...Bg7 8.Nc3 (8.d4 Bb7+=) 8...Nbd7 (8...0-0 9.d4 Nbd7 10.0-0+=) 9.d4 Bb7 10.0-0 0-0 11.Qc2 Rc8 (11...ed4 12.ed4 Re8 13.d5+=) 12.Ba3 (12.de5 de5 13.Rfd1 Qe7+=) 12...Nh5 (12...Re8 13.d5+=) 13.Rad1 f5 (13...ed4 14.Nd4 Nhf6 15.Bf3 Bf3 16.Nf3+=) 14.de5 (14.c5 ed4 15.Nd4 Bd4 16.ed4 bc5 17.dc5 Ne5+–) 14...Ne5+= 15.Ne5 (15.Nd5 Qe8+=) 15...Be5 16.f4 (16.Bh5 gh5 17.Bb2 c6+/-) 16...Bc3 17.Qc3 Nf6 (17...Qf6 18.Qb3 Qe6 19.Bh5 gh5 20.Bb2+=) 18.Bb2 (18.c5!? Bd5 19.Bb2+=) 18...Qe7= 19.Bf3 (19.c5 bc5 20.e4 Be4+= (20...Qe4? 21.Bf3 Qb4 22.Bb7 Qc3 23.Bc3+–)) 19...Be4 20.Qd2 (20.a3 Bf3 21.Rf3 Rce8=) 20...Qe6 (20...Bf3 21.Rf3 Rce8 22.a3=) 21.Bf6 Rf6 22.Be4 Qe4 23.Qd5 Re6 24.Rfe1 Rce8 25.Kf2 Kf8 26.Qd4 Kg8 27.Qd5 Kg7 28.Qe4 Re4+= 29.Rd4 Kf6 30.Re2 R8e6 31.a4 Ke7 32.Re4 Re4 33.Rc2 Kd7 34.Ke2 c6 35.Kd3 c5–/+ 36.g4 Ke6 37.gf5+= gf5 38.Rg2 d5 39.cd5 Kd5 40.Rg5 c4 41.Ke2 Kc5? 42.Rf5+/- Kb4 43.Rf6 Ka4 44.Rb6 Kb3 45.Rc6 Re8 46.Kd2 a4–/+ 47.e4?? a3–+ 48.Ra6 c3 49.Kd3 Rd8 (49...Rd8 50.Ke3 c2–+) 0–1. Laurent,Rudolf – Sippenauer,Werner, Oberpfalz–ch, 2001.

6.h3 Bb7 7.Nf3 Nbd7 8.Be2 Be7 9.0-0 0-0 10.d4 e4 11.Nfd2 c6 (11...d5 12.cd5 Bb4 13.a3 Bd2 14.Qd2 Nd5 15.Qc2+=) 12.a4 (better is 12.bc6!? Bc6 13.d5+/-) 12...d5 13.cd5 cd5 14.Nc3 Bd6 15.Rc1 Rc8 16.Qb3 Bb8 17.Rfe1 Qc7 (17...Bd6 18.Ba3 Qe7 19.Bd6 Qd6 20.Rc2=) 18.Nf1+= Qd8 19.Bg4 (better is 19.Ba3 Re8 20.Rc2+=) 19...Ng4–/+ 20.hg4 Qg5 21.Qd1 Nf6 22.g3 (22.f4!? ef3 23.gf3–/+) 22...Ng4–+ 23.Nh2?? (23.Ba3 Rfe8–+) 23...Nh2 (better is 23...Nf2 24.Qe2 Bg3 25.Qf2 Bf2 26.Kf2 f5–+) 24.Kh2 Rcd8 25.Ne2 (25.Ba3 Rfe8 26.Rh1 Bc8–+) 25...Rd6 (25...Bc8 26.Kg1 Bg4–+) 26.Ng1? (26.Rh1 Rc8–+) 26...Rh6 (26...Rg6 27.Ne2 Qh5 28.Kg2 Qf3 29.Kf1 Qh1 30.Ng1 Bg3 31.Ke2 Bf2 32.Kd2–+) 27.Kg2 f5 (27...Bc8 28.Rc6–+) 28.Rc2 f4 29.ef4 Bf4 30.Bc1 Bc1 31.Rc1?? (better is 31.Qc1 Qh5 32.Kf1–+) 31...Bc8 (31...Rh2 32.Kh2 Rf2 33.Kh3 Qh6 34.Kg4 Qe6 35.Kh4 g5 36.Kh5 Qg6 37.Kg4 Qf5 38.Kh5 Rh2 39.Nh3 Rh3#) 32.Rc7 Bg4 33.Qc2 Qh5 34.Kf1 Bh3 35.Nh3 Qh3 36.Ke2 Rhf6 37.Rf1 Qg2 38.Ke1 e3 39.Qe2 Rf2 40.Rf2 ef2 41.Kd2 f1Q (41...f1Q 42.Re7 Qgf2 43.Re8 Re8 44.Kc3 Re3 45.Qe3 Qc4#) 0–1. vihavald (1630) – mister1962 (1755), kurnik, 2012.

7.d4+= ed4 8.Bd4 Nbd7 9.Be2 c5 (9...Be7 10.0-0=) 10.Bb2 (10.bc6 Bc6 11.Nc3 d5+/-) 10...Ng4 (10...Be7 11.0-0+=) 11.0-0+/- Nge5 12.Nbd2 (12.Nc3 Be7+/-) 12...g6 (12...Be7 13.Qc2+=) 13.Ne5 (13.Ne1 Nf6+/-) 13...de5+= 14.Nf3 (14.Bf3 Qc7+=) 14...f6 15.Qc2 Bg7 16.Rad1 Qe7 17.Qd2 (17.Nd2 f5+=) 17...Rd8 (17...e4 18.Ne1=) 18.Qd6+= Qd6 19.Rd6 0-0? (better is 19...Bf8!? 20.Rdd1 Bg7=) 20.Rfd1+– ½–½. Sternik,Ryszard – Pelc,J, corr Poland, 1985.

7.Be2 Nbd7 8.0-0 Be7 9.Nc3 0-0 10.d4 Re8 11.Rc1 Bf8 12.h3 Rc8 13.Ba1 g6 (13...Be7 14.a3=) 14.Qb3 Bg7 15.Rfd1 Qe7 16.Nd5 (16.de5!? de5 17.Nd5+=) 16...Nd5=+ 17.cd5 ed4 (better 17...e4!? 18.Nd2 Qg5=+) 18.Nd4 Nc5 19.Qc4 Qe4 20.Bf3 Qe5?? (20...Qh4 21.a3+=) 21.Nc6?? (better 21.Ne6! Qa1 22.Ra1 (22.Nc5?! Qc1 23.Rc1 bc5+-) 22...fe6 23.Rac1+-) 21...Qg5+= 22.Bg7 Kg7 23.Rd4 Bc6 24.bc6 Qe5 25.g3 f5 26.Bg2 Rf8 27.Qe2 Rce8 28.Rc5?? (better 28.Qf3+=) 28...dc5-/+ 29.Rd2 (29.Rf4 g5 30.Rc4 f4 31.gf4 gf4 32.Qg4 Kh8 33.Rf4 Rf4 34.ef4 Qe1 35.Kh2 Qf2-+) 29...Qc3 (29...f4!? 30.gf4 Rf4 31.ef4 Qe2 32.Re2 Re2-+) 30.d6 cd6 31.Rd6 Re7 32.Qb5 Qb4 33.Qa6 Rff7 (33...c4 34.Rd7 Rd7 35.cd7 c3-+) 34.Qc8?? (34.Bd5 c4 35.Rd8 c3-/+) 34...c4 (better 34...Qe1 35.Kh2-+) 35.Rd8?? (better 35.Rd1-/+) 35...c3-+ 36.Rg8 Kf6 37.Bd5 (37.c7 c2 38.Rg6 Kg6 39.Qg8 Rg7 40.c8Q Rg8 41.Qc2-+) 37...c2 38.Bf7 (38.Kg2 c1Q 39.Qd8-+) 38...c1Q 39.Kh2 Qe4 40.Rg6 hg6 41.Qh8 Kg5 (41...Kf7 42.Qh7 Ke6 43.Qg8 Rf7 44.Qe8 Kd6 45.Qb8 Kc5 46.Qe5 Qe5 47.c7 Rc7 48.h4 Qea1 49.g4 Qg1 50.Kh3 fg4) 42.f4 Qf4 43.ef4 (43.gf4) 43...Qf4+- 44.gf4 Kf4 45.Qe8! (45.Qe8 Re8 46.Be8+-) 1-0. carlos78 (2235) - arstelli (1950), Rated Blitz game, lichess.org, 2015.

7.Be2 Nbd7 8.0-0 g6 9.a4 Bg7 10.d4 0-0 11.d5 (11.Nc3!?=) 11...Nc5=+ 12.Nc3 Nfe4 13.Ne4 Ne4 14.Nd2 Nc5 15.Ba3 (15.Nb3 Nb3 16.Qb3 e4=) 15...Bc8 (15...e4 16.Bc5 bc5 17.Rc1=+) 16.Bf3 f5 17.e4 fe4 (17...Bb7 18.Qc2=) 18.Ne4= Bd7 (18...Ne4 19.Be4 Bf5 20.Re1=) 19.Bc5+= dc5 20.Re1 Qe7 (20...Bf5 21.Ra3+=) 21.Bg4 (21.d6 cd6 22.Nc5 Ra7 (22...dc5? 23.Ba8 Bf6 24.Bd5 Kg7 25.Qe2+–; worse 22...bc5 23.Ba8 Qf6 24.Bd5 Kh8 25.Qd2+–) 23.Nd7 Rd7+–) 21...Bg4 (21...Bf5 22.Ra3+=) 22.Qg4 Rf4 23.Qe2 Raf8 24.Ra3 h5 (24...Qf7 25.Re3+–) 25.Rg3 Kh7 26.Ng5 Kg8? (26...Kh8 27.Nh3 R4f6 28.f4+– (28.Qe5?! Qe5 29.Re5 Rf2 30.Nf2 Be5=+)) 27.Qd3 (27.Ne6 Rf2 28.Qe4 R8f7 29.Rg6 R2f6+–) 27...R4f5? (better 27...e4!? 28.Ne4 Qf7+–) 28.Ne6+– R8f7? (28...Kh7 29.Rh3 Kg8 30.Nf8 Qf8+–) 29.Rg6 Qh4 (29...R5f6 30.Rg5 Re6 31.de6 Qe6 32.Ree5 Rd7+–) 30.Rg7 Rg7 (30...Kh8 31.g3 Qf6 32.Rf7 Qf7+–) 31.Qf5 Rf7 32.Qg6 (32.Qg6 Kh8 33.Qf7 Qg4 34.h3 Qg8 35.Qf6 Kh7 36.Re5 Qe6 37.Rh5 Kg8 38.Rh8) 1–0. Janek – Ccvmep, internet, 2019.

7.Be2 Nbd7 8.Nc3 g6 (8...Be7 9.0-0+=) 9.0-0 Bg7 10.d4 0-0 11.Qc2 Re8 12.de5 de5 13.Rfd1 c6 14.a4 (14.bc6 Bc6 15.e4 Qc7+=) 14...Qc7 15.Rac1 (15.Ba3 c5+=) 15...Rac8 16.h3 (16.e4 Nc5=) 16...Qb8 (16...Nc5 17.Ba3=) 17.Ng5 (17.Rd2 cb5 18.Nb5 Nc5=) 17...cb5 18.Nb5 Bf8 19.Ba3 Ba3 20.Na3 h6 21.Nf3 Bc6 22.Nb5 Bb5 23.ab5 Re6 24.Nd2 Nc5 25.Nb3 Nfe4 26.Nc5 Nc5 27.Rd5 h5 28.Rcd1+= Qc7 29.Qd2 Kg7 30.Rd8 Re8 31.Rc8+= Rc8 32.Qb2 f6= 33.g4 hg4=+ 34.hg4 Rd8 35.Rd5 Rd5 36.cd5 Ne4 37.f3 Qc3 (38.Qc3 Nc3=+; 37...Nc3 38.e4–/+) 0–1. Manninen,Juha – Kiik,Kalle (2380), FIN–ch op Naantali, 1997.

7.Be2 Nbd7 8.d4 e4 9.Nfd2 Be7 10.Qc2 0-0 (10...d5 11.cd5 Bd5 12.Nc3+/-) 11.d5+/- Nc5 12.Bd4 Re8 13.Nc3 Qd7 (13...Bc8 14.Bc5 dc5 15.Nde4 Ne4 16.Ne4+/-) 14.Bc5 dc5 15.Nce4 Ne4 16.Ne4 (worse 16.Qe4 Bf6 17.Qb1 Ba1 18.Qa1 Rad8=+) 16...f5 17.Ng3 Bf6 18.Rd1 g6 19.0-0 h5 (better 19...Rad8+/-) 20.Bh5 (better 20.Bd3!?+/-) 20...gh5= 21.Nf5 Qh7 22.e4 Bc8 23.Rfe1 Be5 24.Nh4 Rf8 (24...Bg4 25.f3 Bd7 26.g3=) 25.g3 (25.Nf3!? Bg7 26.h3=) 25...Bg4 26.Rd2 Bd4 27.Kg2 Qd7 (27...Qg7 28.h3 Bd7 29.Nf5 Bf5 30.ef5=) 28.f3 (28.e5!?+=) 28...Bh3= 29.Kh1 Rae8 30.f4 White prepares e5 30...Qg4 (30...Bg4 31.e5+=) 31.e5+/- Rf4 32.Qg6?? (better 32.gf4 Qh4 33.Qg6 Kf8 34.Re4+=) 32...Qg6-+ 33.Ng6 Rf2 (better 33...Rf1!? 34.Rf1 Bf1 35.e6-+) 34.Rf2 Bf2 35.Re2 Bd4 36.Nf4 (36.e6 Bg4 37.Nf4 Bf3 38.Rg2 Rf8-+) 36...Bg4 37.e6 Be2 38.Ne2 Kf8 (better 38...Be3!? 39.Nc3 Rf8-+) 39.Nf4-/+ Ke7 (39...a4 40.Kg2-+) 40.Nh5 Rf8 (40...a4 41.Kg2-+) 41.Nf4=+ Be5?? (better 41...Rf6 42.Kg2 Be5=+) 42.Ng6+- Ke8 43.Nf8 Kf8 44.Kg2 Ke7 45.Kf3 (better 45.h4 Kf6+-) 45...Kd6? (45...Kf6+-) 46.h4 Bf6 47.Kg4 Ke5 48.Kh5 Kd4 (48...Kd6+-) 49.g4 (49.Kg6 Be7 50.h5 Kc4+-) 49...Kc4 50.g5 Be7 51.g6 Kd5 (51...Bf6 52.Kg4 Kd4 53.Kf5+-) 52.g7 1-0. zembelek (2055) - oleg_h (1840), Rated Blitz game, lichess.org, 2013.

7.Be2 Be7 8.0-0 =.

7.d4 ed4 8.Nd4 Bb7 9.Nd2 0-0 10.N2f3 Nbd7 11.Be2 Ne5 12.0-0 Nf3 (12...Re8!?=) 13.Bf3+/- (13.gf3?! Qd7=) 13...Bf3 14.Qf3 Rc8 (14...Nd7 15.Nc6 Qe8 16.e4+=) 15.Nc6 Qd7 16.Ne7 Qe7 17.Bf6 Qf6 18.Qf6 gf6 19.Rad1 Rfe8 20.Rd5 Re5 21.Rfd1 Rce8 22.R1d4 Rd5 23.Rd5 Re5 24.Kf1 f5 25.Re5 de5 26.f4 f6 27.Ke2 Kf7 28.Kd3 Ke6 29.g3 Kd6 30.h3 h5 31.h4 (better is 31.a4+=) 31...Kc5?? (better is 31...c6=) 32.e4?? (32.fe5 fe5 33.e4 fe4 34.Ke4 Kc4 35.Ke5 Kb5 36.g4 hg4 37.Kf4–/+) 32...ef4–/+ 33.gf4 fe4 34.Ke4 Kc4 35.Kf5 Kb5 36.Kf6 c5 37.Ke5 c4 38.Kd4= Kb4 39.f5 c3 40.Kd3 Kc5 41.Kc3 b5 42.a3 Kd5+= 43.f6 Ke6 44.Kd4 Kf6 45.Kc5 b4 46.ab4 ab4 47.Kb4 Kf5 48.Kc4 Kg4 49.Kd3 Kh4 50.Ke2 Kg3 51.Kf1 Kf3 52.Kg1 Kg3 53.Kh1 Kh3 54.Kg1 h4 55.Kh1 Kg3 56.Kg1 Kh3 57.Kh1 Kg4 58.Kg2 Kf4 59.Kh3 Kg5 60.Kh2 Kg4 0–1. barborski – emarko (1650), playok.com, 2012.

7.d4 Nbd7 8.de5 de5 9.Ne5 0-0 (9...Bb4 10.Ke2 0-0 11.Nc6+=) 10.Nf3 Bb4 11.Bc3 Bc3 12.Nc3 Qe7 13.a3 Nc5 14.Qc2 Be6 15.Be2 Rad8 16.0-0 g6 17.Nd4 Bd7 18.Bf3 Rfe8 19.Rfd1 Qf8 20.Nd5 Nfe4? (better is 20...Qd6+–) 21.Nc7 Re7 (21...Re5 22.Be4 Ne4 23.Nf3+–) 22.Nd5 Re6 (22...Ree8 23.Nb6 Ng5 24.Bc6 Bc6 25.Nc6 (worse is 25.bc6 Nge6+–) 25...Rd1 26.Rd1+–) 23.Ne6 Be6 (23...fe6 24.Nb6 Ng5 25.Bg4+–) 24.Be4 Ne4 25.Qe4 Bf5 (25...Bd5 26.Rd5 Rd6+–) 26.Ne7 Kg7 27.Nf5 (better is 27.Qe5 f6 28.Nf5 Kh8 29.Rd8 Qd8+– (29...fe5?? 30.Rf8)) 27...gf5 28.Qf5 Re8 29.Qg5 Kh8 30.Qf6 Kg8 31.Rd4 Qg7 32.Qg7 Kg7 33.Rc1 Re6 34.c5 bc5 35.Rc5 Rb6 36.a4 h6 37.f3 Re6 38.Kf2 Kf6 39.Rc6 Ke5 40.Re6 fe6 41.b6 (41.b6 Kf6 42.b7 e5 43.Rd6 Ke7 44.b8Q Kf7 45.Qc7 Ke8 46.Rd8) 1–0. aleksanderpl (1610) – olek1935, kurnik, 2012.

7.d4 e4 8.Nfd2 c6 +=.

7.Be2 0-0 8.0-0 Nbd7 9.d4+= e4 10.Nfd2 Bb7 11.d5 Nc5 12.Qc2 Bc8 13.Nc3 (13.Bd4 Bf5+/-) 13...Bf5 14.Ba3 (14.f3 ef3 15.Qf5 fe2 16.Ne2 Qd7+=) 14...Re8= 15.Rad1 Bf8 16.Bb2 Nfd7 17.f3 Qg5 18.fe4 Qe3 19.Kh1 (19.Rf2 Bg6+=) 19...Be4 20.Nde4 Ne4 21.Bd3 Nef6 22.Rf3 (22.Bc1 Qe5=) 22...Qe7 23.Rdf1 g6 (23...Ne5 24.Re3=) 24.Ne2 Bg7 25.Nd4 Ne5 26.Rf6? (better is 26.Nc6 Nc6 27.bc6+=) 26...Bf6–+ 27.Nc6 Nc6 28.Bf6 Nb4 29.Qc3? (better is 29.Qd1 Qe3 30.Bb1–+) 29...Qe3 30.Bh8 Re5?? (better is 30...f6 31.Qf6 Qe7 32.Qe7 Re7–+) 31.Be5–/+ Qe5 (31...de5 32.Rf3 Na2 33.Re3 Nc3–+) 32.Qe5= de5 33.Bb1 e4 34.Be4 Na2 35.d6!+/- Rd8 36.c5?? cd6–/+ 37.Bd5 Nc3 38.Bf7 Kg7 39.c6 Rf8 40.Kg1? Nb5–+ 41.Rb1?! Nc7 42.Bc4 Rb8 43.Kf2 Kf6 44.Ke3 d5 45.Be2 Ke5 46.Rf1 h5 47.Rf7 Rc8 48.g4 h4 49.g5 Ne6 50.Rf6 Rc6 51.Bb5 d4 52.Kd2 Rc5 53.Bd7 Ng5 54.Rg6 Ne4 55.Kd1 b5 56.Rh6 Nf6 (56...Nf6 57.Bh3 b4–+) 0–1. Vila Martinez,JR – Veira Vazquez,J, 1986.

7.Be2 0-0 8.0-0 e4 9.Nd4 +=.

7.Be2 c5 8.0-0 0-0 9.Qc2 (9.Nc3 Bb7+=) 9...Bg4 (9...Nbd7 10.Nc3+=) 10.Nc3 Nbd7 11.e4 (11.h3 Bh5+–) 11...Bh5 12.h3 h6 (12...Re8 13.Rae1+=) 13.Nh4 (13.Rae1!?+–) 13...Be2= 14.Ne2 Ne4 15.Nf5 Nef6 16.Qd3 (16.Nc3 Re8=) 16...e4 17.Qg3 Nh5 18.Qg4 Increases the pressure on g7 18...Ndf6? (better 18...g6 19.Neg3 Ng3 20.Qg3 Bf6 21.Bf6 Qf6 22.Nh6 Kg7=) 19.Bf6+– Bf6 20.Nh6 (20.Qh5?! Ba1 21.Ra1 Qf6=) 20...Kh7 21.Nf7 (21.Qh5?! g6 22.Nf7 gh5 23.Nd8 Rad8+– (23...Ba1? 24.Ne6 Be5 25.Nf8 Rf8 26.Ng3+–)) 21...Rf7 22.Qh5 Kg8 23.Rae1 Be5 (23...Bg5 24.Ng3 Bd2 25.Re2+– (worse 25.Re4 Qg5+–)) 24.Ng3 Bg3 (24...Qf6 25.Ne4 Qh6 26.Qg4+–) 25.fg3 Rf1 (25...Qd7+–) 26.Rf1 Qe7 (26...Ra7 27.Rf4 g5 28.Re4 Rf7+–) 27.Qd5 Kh8 (27...Kh7 28.Qa8 Qe5+–) 28.Qa8 Qd8 29.Qd8 (29.Qd8 Kh7 30.Qf8 e3 31.Rf7 Kg6 32.Qg7 Kh5 33.Rf5) 1–0. DEFFM – GuestJGNX, freechess.org, 2018.

7.Be2 e4 8.Nd4 +=.

6.a4 Be7 7.d4 ed4 8.ed4 0-0 9.Nf3 (9.Bd3 d5=) 9...b6 (9...d5 10.dc5 Bc5 11.Be2=) 10.Be2 Bf5 (10...d5 11.0-0=) 11.0-0 Bg6 (11...d5 12.dc5 Bc5 13.Nd4+=) 12.h3 (12.Re1 Re8+=) 12...Nbd7 13.Nc3 Re8 14.dc5 (14.Nh4 Be4+=) 14...dc5= 15.Nd5 (15.Nh4!?=) 15...Nd5=+ 16.Qd5 Nf6 (16...Bf6 17.Qd2=+) 17.Qd8= Rad8 18.Rfd1 Bd6 19.Bd3? (19.Bf6 gf6 20.Kf1 Be5=) 19...Ne4 (better 19...Bd3!? 20.Bf6 gf6 21.Rd3 Bh2 22.Nh2 Rd3–/+) 20.Nh4 f5 (20...Nf2 21.Kf2 Bd3 22.Rd3=+) 21.Be4 Re4 22.Rac1?? (22.Ng6 hg6 23.Rac1 Re2=) 22...Kf7?? (better 22...Rh4 23.Be5 Be7 (23...Be5?! 24.Rd8 Kf7 25.Rd7 Kf8 26.Rb7–+) 24.Rd8 Bd8–+) 23.Nf3= h6 (23...Kf8 24.Be5 Be7 25.Re1=) 24.Be5 (24.Rd5 Re6 25.Rcd1 f4=) 24...Ke6 (24...Be7 25.Rd8 Bd8 26.Rd1=) 25.Bd6 (25.Bg7!? Bh5 26.Bh6 Bf3 27.gf3=) 25...Rd6=+ 26.Rd6 Kd6 Black gets in control 27.g3 (27.Nd2 Rd4 28.Nf3 Rd3=+) 27...Bf7–/+ 28.Nd2 (28.Nh4 f4 29.Nf5 Ke5–/+) 28...Rd4 29.Rc2 g5 Black plans f4 30.Kg2 f4 31.Kf3 Bg6 32.Rb2 (32.Ra2 Bd3–+) 32...Bh5 (32...Rd3 33.Kg4–+) 33.Kg2 Bf7 34.g4 (34.gf4 gf4 35.Rc2–+) 34...Bc4 35.Nc4 Rc4 36.Re2 (36.Ra2 Kd5–+) 36...Ra4 37.Re8 c4 38.Rh8 (38.Rc8 Kd5 39.Rc6 c3 40.Rc3 Rc4 41.Rd3 Kc5–+) 38...Kc5 (better 38...Kd5!? 39.Kf3 c3 40.Ke2 Ra2 41.Kd3 Rf2 42.Kc3 Rf3 43.Kc2 Rh3 44.Rc8–+) 39.Rh6 Kb5 40.Rh5 (40.h4 gh4 41.Rh5 Kc6–+) 40...Kb4 (40...c3 41.Rg5 Kc4 42.Re5–+) 41.Rg5 (41.h4 gh4 42.Rh4 c3–+) 41...c3 42.Rg7 (42.Rg6 c2 43.Rc6 Kb3 44.Rc2 Kc2–+) 42...Kb3 43.Rc7 Rc4 (43...Rc4 44.Re7 c2–+) 0–1. RichardSommer (2140) – Werriatone (2205), lichess.org, 2020.

6.a4 g6 7.d4 ed4 8.ed4 Qe7 9.Be2 Bg7 10.Nf3 0-0 11.0-0 b6 12.Re1 Qc7 13.Qc2 Bb7 14.Nbd2 Nbd7 15.d5 Rae8 16.h3 Bc8 17.Bd3 Nh5 18.Bg7 Ng7 19.Qc3 Qd8 20.Ne4 Ne5 21.Bf1 (21.Ne5 de5 22.Nd2 Qd6+=) 21...Nf5 (21...f6=) 22.g4 (22.Nfd2 g5+/-) 22...Nd4 (better 22...Nf3 23.Qf3 Nd4=+) 23.Bg2?? (23.Ne5!? Re5 24.f4=) 23...Ndf3 (better 23...Nef3 24.Bf3 f5-+) 24.Bf3=+ f5 25.gf5 Bf5 (25...Nf3 26.Qf3 Bf5 27.Qg2=+) 26.Bg2= Be4 27.Re4 Qg5 28.h4 Qf6 29.Rf1 Re7?? (29...Qf5 30.f4 Ng4 31.Re6=) 30.Kh1?? (better 30.f4 Qh4 31.fe5 Rf1 32.Kf1 Rf7 33.Kg1 Qf2 34.Kh1+/-) 30...Ref7= 31.Bh3 (better 31.Qg3=) 31...Qf3-+ 32.Qf3 Rf3 (worse 32...Nf3 33.Be6 Nd2 34.Bf7 Kg7 35.Bg6 Nf1 36.Bh5+=) 33.Be6 Kg7 34.Kg2 Ra3 (better 34...R8f4 35.Rf4 Rf4-+) 35.f4=+ Nd3 36.Rf3 Ra2 37.Kg3 Nb4 (37...Nc1 38.Rfe3=+) 38.Bd7 Ra4 39.Re7 Kh6 40.Re6 (40.Re2 Ra1 41.f5 Rg1 42.Kf2 Rc1=+) 40...Nc2 41.f5 (41.Rd6 Rd8 42.f5=+) 41...Ra1?? (better 41...Nd4 42.Rd6 Nf3 43.Kf3 Rc4 44.Rb6 Rh4-+) 42.fg6 (42.Rd6!? Rd8 43.h5=) 42...Rg1= 43.Kf2 (43.Kf2 Rf3 44.Kg1 Rg3 45.Kf2 Rg6 46.h5 Kh5 47.Be8+=) 1-0. zembelek (2035) - arpouille (2025), Rated Blitz game, lichess.org, 2014.

6.Nc3 a4 A) 7.Nf3 A1) 7...Bf5 8.Na4 (8.Be2 a3 9.Bc1 Be7 10.Qb3 Qa5 11.Nh4 Be6 12.0-0) 8...Nbd7 9.Be2 Be7 10.0-0 0-0 11.d3 h6 12.Nc3; A2) 7...a3 8.Bc1 Be7 9.Bd3 0-0 10.Rb1 h6 11.Rb3 Be6 12.0-0; A3) 7...Nbd7 8.Be2 (8.Bd3 Nb6 9.0-0 Be6 10.Qe2 a3 11.Bc1 Be7 12.Ng5) 8...a3 9.Bc1 Be7 10.0-0 0-0 11.d3 h6 12.Qb3; B) 7.Be2 B1) 7...Bf5 8.Na4 (8.a3 Be7 9.g4 Bg6 10.d3 h6 11.Nf3 Nbd7 12.Nh4) 8...Qa5 9.Nc3 Qb4 10.Bc1 Be7 11.g4 Bg6 12.Nf3; B2) 7...Be7 8.Na4 (8.Qc2 a3 9.Bc1 0-0 10.Nf3 h6 11.0-0 Be6 12.Rb1) 8...0-0 9.Nc3 Bf5 10.Nf3 e4 11.Nh4 Be6 12.g4; B3) 7...a3 8.Bc1 Be7 9.Qc2 0-0 10.Nf3 h6 11.0-0 Be6 12.Rb1; C) 7.a3 C1) 7...Bf5 8.h3 (8.Nge2 Nbd7 9.Ng3 Be6 10.Bd3 Nb6 11.Qe2 Be7 12.0-0) 8...Be7 9.g4 Be6 10.Nf3 Nbd7 11.Ng5 0-0 12.Ne6; C2) 7...Qe7 8.Qc2 (8.Be2 Nbd7 9.Na4 g6 10.Nf3 e4 11.Ng5 h6 12.Nh3) 8...Nbd7 9.Nf3 Nb6 10.Be2 e4 11.Ng5 Bf5 12.d3; C3) 7...Nbd7 8.Bd3 (8.Na4 b6 9.Be2 Be7 10.d3 0-0 11.Nf3 Bb7 12.0-0) 8...Qe7 9.Nh3 e4 10.Be2 Ne5 11.Na4 Bh3 12.gh3; D) 7.Na4 D1) 7...Nbd7 8.Nc3 (8.Be2 Be7 9.Nc3 0-0 10.Nf3 Nb6 11.0-0 Be6 12.Qb3) 8...Nb6 9.Nf3 Bf5 10.a4 Ra5 11.Qb3 Be7 12.d3; D2) 7...Bf5 8.Nc3 (8.Ne2 Qa5 9.Nac3 Nbd7 10.Ng3 Be6 11.Qb3 Qb4 12.Nge4) 8...Be7 9.Nge2 0-0 10.Ng3 Be6 11.Qf3 Qd7 12.h3; D3) 7...Be7 8.Nc3 (8.Qc2 Nbd7 9.Be2 h6 10.Nf3 0-0 11.0-0 Qa5 12.Nc3) 8...0-0 9.Qc2 Be6 10.Nf3 Nbd7 11.Ng5 Nb6 12.Bd3.

6.Nc3 d5 7.cd5 Bd6 8.e4 +=.

6.Nc3 Be6 7.d3 Be7 8.Nf3 h6 9.Be2 0-0 10.Qc2 Ne8 11.0-0 f5 12.Rad1 Bf6 13.d4 cd4 14.ed4 e4 15.Ne1 Nd7 16.d5 Bf7 17.Na4 Rc8 18.Qb3 Bb2 19.Qb2 Nc5 20.Nc5 Rc5 21.Nc2 Qc8 22.Nd4 a4 23.a3 g5 24.Qd2 f4 25.Qc2 Nf6 26.Qb2 Qd8 27.Qd2 Re8 28.Nf5 Kh7 29.Nd4 e3?? (better is 29...Kg8=) 30.fe3+– Re3 31.Bd3 Kg7? (better is 31...Bg6 32.Bg6 Kg6 33.Qc2 Re4+/-) 32.Nf5 Kf8 33.Ne3 fe3 34.Qe3 Kg7 35.Qf3 (35.Qf3 Bh5 36.Qf5+–) 1–0. lotensol8 – karoo54, kurnik, 2012.

6.Nc3 Qe7 A) 7.Be2 A1) 7...g6 8.h4 (8.Nf3 Bg7 9.0-0 0-0 10.Ng5 Nbd7 11.d3 Nb6 12.Qd2) 8...Nbd7 9.Nf3 Nb6 10.Ng5 Bg7 11.0-0 0-0 12.d3; A2) 7...e4 8.Nh3 (8.Qc2 a4 9.Na4 Nbd7 10.f4 Ng4 11.Bg4 Qh4 12.g3) 8...Bh3 9.gh3 Nbd7 10.Qc2 Nb6 11.0-0 Qe6 12.d3; A3) 7...Nbd7 8.d3 (8.Nh3 Nb6 9.Ng5 g6 10.0-0 Bg7 11.f4 0-0 12.Bd3) 8...g6 9.Nf3 Bg7 10.0-0 0-0 11.Ng5 Nb6 12.Qd2; B) 7.Nh3 B1) 7...Bf5 8.f3 (8.Be2 h6 9.0-0 Nbd7 10.d3 Nb6 11.Qd2 Qd7 12.f4) 8...h6 9.Nf2 Nbd7 10.Nfe4 Qe6 11.Bd3 Be7 12.0-0; B2) 7...h6 8.Bd3 (8.Qc2 Nbd7 9.Be2 Nb6 10.0-0 Bh3 11.gh3 Qe6 12.Bf3) 8...Nbd7 9.0-0 Nb6 10.Na4 Na4 11.Qa4 Bh3 12.gh3; B3) 7...Nbd7 8.Ng5 (8.Be2 Nb6 9.0-0 Bh3 10.gh3 Qd7 11.Kg2 Be7 12.d3) 8...h6 9.Nge4 a4 10.Nf6 Nf6 11.Na4 Qc7 12.Bd3; C) 7.h3 C1) 7...h6 8.Be2 (8.d3 Nbd7 9.Be2 Qe6 10.Bf3 Be7 11.Nge2 0-0 12.0-0) 8...Nbd7 9.d3 Qe6 10.Nf3 Be7 11.0-0 0-0 12.Qb3; C2) 7...Bf5 8.g4 (8.Nf3 Nbd7 9.d3 g6 10.g4 Be6 11.Bg2 h6 12.g5 ) 8...Be6 9.Nf3 h6 10.Bd3 Nbd7 11.Qe2 g6 12.g5; C3) 7...Nbd7 8.Be2 (8.Qc2 Nb6 9.Nf3 Be6 10.d3 g6 11.Ng5 d5 12.cd5) 8...Nb6 9.d3 g6 10.Nf3 Bg7 11.0-0 0-0 12.Qc2; D) 7.Qc2 D1) 7...Nbd7 8.Nf3 (8.Be2 Nb6 9.Nf3 g6 10.0-0 Bg7 11.Ng5 0-0 12.f4) 8...Nb6 9.Be2 Be6 10.d3 g6 11.Ng5 Bf5 12.0-0; D2) 7...g6 8.Nf3 (8.Bd3 Nbd7 9.Nf3 Bg7 10.0-0 0-0 11.Ng5 Nb6 12.h3) 8...Nbd7 9.Bd3 Bg7 10.0-0 0-0 11.Ng5 Nb6 12.h3; D3) 7...Be6 8.Nf3 (8.Nh3 d5 9.cd5 Nd5 10.Qe4 Qd6 11.f4 f5 12.Qe5) 8...Nbd7 9.Ng5 h6 10.Ne6 Qe6 11.Be2 Be7 12.0-0.

6.c4 d6 7.Nf3 b6 (7...e4!? 8.Ng1 d5=) 8.Nc3 Be7 9.Be2 0-0 10.Qc2 Nbd7 11.h3 g6 (11...Bb7 12.0-0=) 12.0-0+= Bb7 13.Rad1 e4 (13...d5 14.cd5 Nd5 15.Nd5 Bd5 16.Ne5 Ba2 17.Nc6+/-) 14.Ne1 (14.Ng5 Re8+/-) 14...Ne5 15.d4 Ned7 (better is 15...ed3!? 16.Bd3 Re8+=) 16.d5+– Re8 17.Ne4 Ne4 18.Qe4 Bf6 19.Qc2 Bb2 20.Qb2 Ne5 21.Nf3 f6 22.Ne5 fe5 23.Bd3 Rf8 24.Be4 Qg5 25.Qe2 Rf6 26.Qg4 Qh6 27.Qg3 Raf8 28.Bf3 Bc8 29.Bg4 Bg4 30.Qg4 Rf5 31.Rd3 Qg7 32.f3 Qf6 33.e4 Rf4 34.Qe6 Qe6? (better is 34...Kh8+/-) 35.de6+– Rd8 (35...Re8 36.Rd6 Rf6 37.Rb6 Ree6 38.Re6 Re6 39.Rd1+–) 36.e7 (36.e7 Re8 37.Rd6 Re7 38.Rb6+–) 1–0. orangutanb4 (1920) – jpawlo123 (1735), kurnik, 2011.

6.d4 cd4 7.ed4 e4 =.

6.d4 cd4 7.ed4 Be7 8.Nf3 (8.de5 de5 9.Qd8 Kd8 10.Be5 Re8+=) 8...e4= 9.Nfd2 0-0 10.d5 (better is 10.Nc3=) 10...Nc6?? (better is 10...Bf5=) 11.dc6+– bc6 12.a4 (12.Nc3 cb5 13.Nb5 Rb8+–) 12...d5 13.Be2 (13.Nc3!? Qb6+–) 13...d4+/- 14.Ne4 Ne4 15.Bf3 (better is 15.Qd4 Qd4 16.Bd4 Bb4 17.Kf1 cb5 18.cb5+/-) 15...Bb4= 16.Kf1 Re8 (16...Qe7 17.Bd4 Rd8–+) 17.Qd4+= (17.Bd4 Be6 18.Be2 c5–+) 17...Qd4 18.Bd4 Ng5 (better is 18...Be6!? 19.Be2 Rac8=) 19.Be2+/- cb5 20.ab5 Bb7 21.f3 (21.Be3 Ne4+/-) 21...Rad8 (21...Ne6 22.Be3+/-) 22.Bc3 Re3 (22...Ne6!? 23.Bb4 ab4+/-) 23.Bb4+– ab4 24.Kf2 Rde8 25.Ra2 (25.Bd1 Rd3+–) 25...f5 (25...R8e5+–) 26.Rd1 f4 (26...Kf8 27.Rb2+–) 27.c5 b3 (27...Kf8 28.c6 b3 29.Rb2+–) 28.Rb2 (28.Bc4 Kf8 29.Rb2 Rc8+–) 28...Ne6 (28...Bc8 29.b6 Be6 30.h4+–) 29.c6 Bc8 (29...Bc6 30.bc6 Rc8 31.Bb5+–) 30.Bc4 Kf8 31.Bb3 (31.Rb3 Nd8+–) 31...Nd4 (31...Nc5 32.Bc4 Na4+–) 32.Rd4 (32.Rd4 g5 33.b6+–) 1–0. Suess,Stefan – Andre,Karl, corr ICCF, 1986.

6.d4 ed4 7.ed4 Be7 8.Bd3 =.

6.Be2 Nbd7 7.Qc2 b6 8.Bf3 Rb8 9.Nc3 Bb7 10.Bc6 Qc7 11.Nd5 (11.Bb7 Qb7 12.e4 Nh5+=) 11...Nd5= 12.cd5 Be7 13.Ne2 0-0 14.a4 f5 15.Qc4 Kh8 16.0-0 Bf6 17.f3 Rbe8 18.d4 (18.Qc2 f4+=) 18...Re7 (18...ed4 19.ed4 Rf7 20.Nf4+=) 19.Ng3 Bh4? (19...Bg5 20.f4 ef4 21.ef4+=) 20.de5 (better is 20.dc5 Bg3 21.cd6 (21.hg3?! Nc5 22.Ba3 Bc6 23.bc6 Rfe8+=) 21...Qd6 22.Bb7+–) 20...Ne5?? (20...Bg3 21.hg3 Ne5= (21...de5? 22.d6 Qd6 23.Bb7+–)) 21.Be5 Re5 22.Qh4 Re3 23.Qf4 Re5 24.Rae1 Bc6 25.dc6 Rfe8 26.Re5 de5 27.Qf5 Qd6 28.Qd7 Qd4 29.Kh1 Rd8 30.Qd4 ed4 31.Ne4 Kg8 32.Rd1 Kf8 33.Kg1 Ke7 34.Kf2 Rd5 35.Ke2 1–0. orangutandu – andreiush123, kurnik, 2012.

6.Be2 Be7 7.d3 Nbd7 8.Nf3 0-0 9.0-0 Qc7 10.Nc3 Nb6 11.Na4 h6 12.Nb6 Qb6 13.a4 Rd8 14.Qb3 Be6 15.Rad1 d5 (better is 15...Qc7!?=) 16.Ne5+/- dc4 (16...d4 17.Rde1+/-) 17.Nc4+– Qc7 18.Qc2 Bc4 19.dc4 Nd7 (19...Ne8 20.f4+–) 20.Bc3 (20.Bg4 Bf6+–) 20...Bd6 (20...Bf6 21.Bd2+–) 21.h3 (21.f4 Be7+–) 21...Nb6 (21...Bh2 22.Kh1 Be5 23.Bd2+–) 22.Bb2 (22.f4!? Qe7 23.Rf3 f6+–) 22...Bh2 23.Kh1 Be5 24.Be5 Qe5 25.Bf3 Qe7 26.Rd8 Rd8 27.Rd1 Rd1 28.Bd1 Qh4 (28...Qf6 29.Bf3+–) 29.Bg4 h5 30.Bf3 (30.g3!? Qf6 31.Bh5+/-) 30...Qc4 31.Qc4 (31.Qd2!? Na4 32.Qa5+/-) 31...Nc4= 32.Bd5 (32.Bb7 Nb6=) 32...Nb2 33.Bb7 Na4 34.Bd5?? (better is 34.Be4+=) 34...Nb6–+ 35.Ba2 c4 36.Kg1 (36.Bb1 a4 37.g4–+) 36...c3 37.Bb1 a4 38.Kf1 a3 39.Ke2 c2! 40.Bc2 a2 0–1. Petrochenko,Maria (1755) – Malova,Anna (1815), M. Chigorin Memorial, 2013.

6.Be2 g6 7.d3 Bg7 8.Nd2 0-0 9.h3 Be6 10.Ngf3 Nbd7 11.0-0 h6 12.Qc2 d5 (12...Qc7 13.Rae1=) 13.a4 (better 13.Ne5!? Ne5 14.Be5+–) 13...d4 14.ed4 ed4 15.Rfe1 Nh5 16.Ne4 f5 17.Ned2 Nf4 18.Bf1 Bf7 19.g3 Nh5 20.Nh4 (20.Bg2 Qc7=) 20...Qc7 (20...f4 21.g4 Qh4 22.Nf3–/+) 21.Ndf3 Bf6 22.Ng2 g5 23.Bc1 Rae8 24.Bd2 Ne5 25.Ne5 Be5 26.f4 (26.Rab1 b6=+) 26...Bf6 (26...gf4 27.gf4 Nf4 28.Nf4 Bf4 29.b6–/+) 27.g4 (27.Kh2!?=) 27...fg4 28.hg4 Nf4 29.Nf4 gf4 30.Bg2 f3 31.Bf3? (better 31.Rf1!? fg2 32.Rf6–+) 31...Qg3–+ 32.Bg2 Be5 (32...Be5 33.Re5 Re5 (33...Qe5?! 34.Bh6 Qg3 35.Bf8 Qg4 36.Qf2 Rf8 37.Rf1+=) 34.Ba5 b6 35.Bb6 Rfe8–+; 32...Qg4 33.Bh6 Bh4 34.Re4 Re4 35.de4–/+) 0–1. GuestSVVX – GuestXLHG, freechess.org, 2017.

6.Nf3 b6 7.d3 g6 8.Nbd2 Bg7 9.Qc2 0-0 10.Be2 Qe7 11.0-0 Bf5 Black prepares the advance e4 12.Rfe1 Nbd7 13.Qd1 e4 (13...a4!?=) 14.Nh4+– ed3 (14...d5!? 15.cd5 Nd5 16.Bg7 Kg7 17.Nf5 gf5 18.de4 Nc3+–) 15.Nf5+– gf5 16.Bd3 Ne5 17.Bf5 Nfg4?? (better 17...d5+–) 18.Bg4 1–0. GuestGQRD – adelinaC, freechess.org, 2017.

6.Nf3 e4 7.Ng1 =.

6.Nf3 Be7 7.d4 ed4 8.ed4 b6 9.d5 0-0 10.Be2 Re8 11.0-0 Nbd7 12.Re1 Nf8 13.Nbd2 Bf5 14.Nh4 Bd7 15.g3 Ng6 16.Ng6 hg6 17.Bf3 g5 18.Qc2 g4 19.Bg2 Qc8 20.Ne4 Bf5 21.Nf6 Bf6 22.Qd2 Bb2 23.Qb2 Bd3 24.Qc3 Qf5 25.Rad1 Be4 26.Be4 Re4 27.Re3 Re3 28.Qe3 g5 29.Re1 Kg7 30.Qc3 Kg6 31.Re7 Rd8 32.Qe3 Rd7 33.Re8 f6 34.Rg8 Kh7 35.Qe8 1–0. barborski (1640) – mzubizareta (1665), kurnik, 2013.

6.Nf3 Be7 7.Be2 0-0 8.0-0 Bg4 9.Nc3 Nbd7 10.h3 Bh5 11.d4 cd4 12.ed4 e4 13.Nd2 Bg6 14.Re1 Re8 15.Bf1 Bf8 16.Ba3 b6 17.Rc1 Rc8 18.h4 h5 19.Be2 Qc7 20.Nf1 Qb7 21.Ng3 e3 22.f3 (22.fe3!? Re3 23.Bf3 Re1 24.Qe1+=) 22...d5+= 23.cd5?? (better is 23.Bf8 Nf8 24.Na4=) 23...Ba3–+ 24.Nce4 (24.Qb3 Bc1 25.Rc1–+) 24...Rc1 25.Nf6 Nf6 26.Qc1 Bc1 27.Rc1 Qd5 28.Rc6 Qd4 29.Nf1 Bd3 (29...Bd3 30.Rf6 Be2–+) 0–1. orangutanb4 (2025) – neuromancer (1860), kurnik, 2012.

6.Nf3 Be7 7.Be2 Be6 8.0-0 Nbd7 9.d4 e4 10.Nfd2 b6? (better is 10...0-0+=) 11.d5+– Bf5 12.Nc3 (12.g4!? Bg6 13.g5 Nd5 14.cd5 Bg5+–) 12...0-0+/- 13.Qb1 Re8 14.Nce4 Ne4 15.Ne4 Bf8 (15...Be4 16.Qe4 Bf6 17.Bf6 Nf6 18.Qh4+/-) 16.Bd3+– Kh8 (16...Bg6 17.f4+–) 17.Ng3 (17.Nc5!? Bd3 18.Nd3 Rc8+–) 17...Bd3 18.Qd3 Ne5 19.Be5 Re5 20.f4 Re8 21.e4 g6 22.Rae1 Bg7 23.Re2 Qe7 24.Rfe1 Bd4 25.Kh1 Ra7 26.Nf1 Qh4+/- 27.Qg3 Qh6 28.Nd2 Rae7 29.Nb3 Bf6 30.h3 Bh4= 31.Qf3 Be1–/+ 32.Re1 f5 33.e5 de5 34.d6 e4–+ 35.Qc3 Qg7 36.Qd2 Rd7 37.Qd5 Qf6 38.Rd1 Red8 39.Qe5 Rd6 40.Qf6+– Rf6 41.Rd8 (41.Rd8 Kg7 42.Rd7 Kh6 43.Kg1+–) 1–0. carocan (1700) – mors32 (1660), kurnik, 2011.

6.Nf3 Bf5 7.Be2 Nbd7 (7...e4 8.Ng1=) 8.Nc3 b6 (8...e4!? 9.Nh4 Be6+=) 9.0-0 Be7 10.d4 ed4 11.ed4 0-0 12.d5 (12.Nh4 Be6+/-) 12...Re8 13.Bd3 Bg4 14.h3 Bh5 15.Be2 Bf3 16.Bf3 Ne5 17.Be2 Nfd7 18.Ne4 f5 19.Ng3 g6 20.f4 Nf7 21.Bd3 Bf6 22.Qc2 (22.Rb1!?=) 22...Bb2+= 23.Qb2 Qf6 (23...Re3!? 24.Nf5 gf5 25.Bf5 Qe7+=) 24.Qc2 (24.Qf6!? Nf6 25.Rfe1+=) 24...Re3= 25.Rae1?? (better is 25.Ne2=) 25...Rg3–+ 26.Re6?? (26.Kh2 Qh4 27.Re6–+) 26...Qd4 27.Kh2 Qd3 28.Qb2 Re3 29.Re1 Re1 30.Re1 Qd4 31.Qc1 Nf6 32.Re6 Re8 33.a4 Kf8 34.Qe1 Ne4 35.Qh4 Re6 36.de6 Nf6 37.ef7 Kf7 38.Qg5 Qc4 39.h4 Qe2 40.Qg3 Qg4 41.Qb3 d5 42.Qe3 d4 43.Qe5 Qh4 44.Kg1 Ng4 45.Qc7 Kf6 46.Qd8+– Ke6 47.Qh4 Kd5?? 48.Qd8 Kc4 49.Qb6 d3 50.Qe6 Kc3 51.b6 d2 52.Qd6 Ne3 53.b7 d1Q 54.Qd1 Nd1 55.b8Q Kc4 56.Qb5 Kd4 57.Qa5 Nc3 58.Qd8 (58.Qd8 Kc4 59.Qg8 Kb4 60.Qh7 Ne2 61.Kh2+–) 1–0. orangutanb4 (2000) – kostas49 (1790), kurnik, 2011.

7.Qc2 A) 7...Be7 8.Bd3 (8.Nf3 Nb6 9.Bd3 Be6 10.Ne2 h6 11.0-0 0-0 12.Ng3) 8...Nb6 9.Nf3 Be6 10.Ne4 h6 11.Nf6 Bf6 12.0-0; B) 7...Qc7 8.Nf3 Nb6 9.Be2 Be7 10.0-0 Be6 11.Ng5 Bc4 12.d3; C) 7...Nb6 8.Nf3 (8.Be2 Be6 9.d3 Be7 10.Nf3 0-0 11.0-0 h6 12.a4) 8...Be7 9.Bd3 a4 10.a3 Be6 11.Ne2 h6 12.0-0.

7.Bd3 A) 7...Nb6 8.Nf3 (8.Nh3 d5 9.cd5 c4 10.Be2 Nfd5 11.Bf3 Nc3 12.dc3) 8...a4 9.Rc1 Be7 10.a3 Be6 11.Qe2 h6 12.0-0; B) 7...Qe7 8.e4 (8.f3 Nb6 9.Nh3 Bh3 10.gh3 Qe6 11.Qe2 Be7 12.Rg1) 8...Nb6 9.Nf3 g6 10.0-0 Bg7 11.a4 0-0 12.Qe2; C) 7...Be7 8.Nf3 (8.h3 0-0 9.Nf3 Nb6 10.0-0 Be6 11.Qe2 e4 12.Ne4) 8...0-0 9.0-0 Nb6 10.Qc2 h6 11.a4 Be6 12.Qb3.

7.Be2 Be7 8.Nf3 b6 9.d3 0-0 10.h3 Re8 11.e4 Nf8 12.Nh2 Ne6 13.Nd5 Nd5 14.ed5 Nf4 15.Bf3 (15.0-0!?+=) 15...Bf5–/+ 16.Be4 Be4 17.de4 Ng2 18.Kf1 Nf4 19.Qf3 Qd7 20.Ng4 f5 21.Ne5? (better is 21.ef5 Qf5 22.Ne3 Qd3 23.Ke1–+) 21...de5 22.Be5 Ng6 23.Bg7 Kg7 24.ef5 Rf8 25.Re1 Rf5 26.Qg4 Raf8 27.Rh2 Bh4 28.Re2 Qf7 29.Rg2 Bf2 30.Ref2 Rf2 31.Kg1 Rf1 (31...Qe7 32.Qd1 Rg2 33.Kg2 Nh4 34.Kg3 Qe3 35.Kh4 Rf4 36.Qg4 Kh6 37.Qf4 Qf4#) 32.Kh2 Qc7 33.Qg3 Qg3 (33...Qg3 34.Kg3 Kh6–+) 0–1. Hoelldorfer,August – Dlusztus,Kornel, Bayern–ch Seniors, 1993. (=1.c4 Nf6 2.b4 a5 3.b5 e5 4.Bb2 d6 5.e3 c5)

7.Nf3 A) 7...a4 8.Bd3 (8.a3 Nb6 9.Bd3 e4 10.Ne4 Ne4 11.Be4 Nc4 12.Bc3) 8...Nb6 9.0-0 Be6 10.Qe2 a3 11.Bc1 Be7 12.Ng5; B) 7...Be7 8.Bd3 (8.a4 0-0 9.Bd3 h6 10.0-0 b6 11.Qc2 Bb7 12.h3) 8...0-0 9.0-0 Nb6 10.a4 Be6 11.Qb3 h6 12.h3; C) 7...Nb6 8.Bd3 (8.Be2 Bf5 9.d3 Be7 10.0-0 0-0 11.Qd2 h6 12.h3) 8...e4 9.Ne4 Ne4 10.Be4 Nc4 11.Bc3 d5 12.Bd3.

7.Nh3 A) 7...Be7 8.Bd3 (8.Ng5 Nb6 9.Bd3 Ng4 10.Nf3 f5 11.Na4 Na4 12.Qa4) 8...Nb6 9.Ng5 Ng4 10.Nf3 Be6 11.Qe2 f5 12.e4; B) 7...h6 8.Qc2 (8.Be2 Nb6 9.0-0 Be7 10.Qc2 0-0 11.f4 Bh3 12.gh3) 8...Nb6 9.Be2 Be7 10.0-0 0-0 11.f4 Bh3 12.gh3; C) 7...Nb6 8.Ng5 (8.Qf3 Be7 9.Bd3 0-0 10.Ng5 h6 11.Nge4 Ne4 12.Be4) 8...h6 9.Nge4 Be6 10.Nf6 Qf6 11.d3 a4 12.a3.

7.Bd3 A) 7...0-0 8.Qc2 (8.Nf3 Nbd7 9.0-0 Nb6 10.a4 Be6 11.Qb3 h6 12.Rac1) 8...Nbd7 9.Nf3 Nb6 10.0-0 h6 11.Ne4 Be6 12.Ng3; B) 7...h6 8.Qf3 (8.Nf3 0-0 9.0-0 Be6 10.Qb3 Nbd7 11.h3 a4 12.Qd1) 8...0-0 9.Nge2 Nbd7 10.Ng3 Nb6 11.Nf5 Be6 12.0-0; C) 7...Nbd7 8.Nf3 (8.a3 0-0 9.Nf3 b6 10.0-0 Bb7 11.Qc2 Qc7 12.h3) 8...0-0 9.0-0 Nb6 10.a4 Be6 11.Qb3 h6 12.Rac1.

7.Be2 A) 7...h6 8.Qc2 (8.Bd3 Be6 9.a4 d5 10.cd5 Bd5 11.f3 Be6 12.Qe2) 8...0-0 9.Nf3 Be6 10.0-0 Nbd7 11.h3 Qc7 12.a4; B) 7...0-0 8.Nf3 (8.Qc2 Be6 9.Nf3 h6 10.0-0 Nbd7 11.Rfe1 Nb6 12.d3) 8...Bf5 9.0-0 Nbd7 10.d3 h6 11.e4 Be6 12.Nd5; C) 7...Nbd7 8.Nf3 (8.Bd3 Nb6 9.Nf3 Be6 10.Qe2 h6 11.0-0 0-0 12.Rac1) 8...Nb6 9.0-0 Be6 10.d3 h6 11.Qc2 a4 12.h3.

7.Nf3 0-0 8.Bd3 (8.Qc2 h6 9.Bd3 Nbd7 10.0-0 Nb6 11.Ne4 Be6 12.Ng3) 8...h6 9.0-0 Be6 10.h3 Nbd7 11.a4 Nb6 12.Qb3.

7.Nf3 Bf5 8.d4 cd4 9.ed4 e4 10.Nd2 d5 11.Be2 0-0 12.0-0 Nbd7 13.g4 Be6 14.cd5 Nd5 15.Nde4 N7b6 16.Nc5 Nc3 17.Bc3 Bd5 18.Bf3 Bd6 19.Nb7 Bh2 20.Kh2 Qc7 21.Kg2 Qb7 22.Qd3 Rfc8 23.Rfc1 Qd7 24.Qf5 Be6 25.Qg5 h6 26.Qf4 Bd5 27.Rab1 Rc4 28.Qf5 Be6 29.Qd3 Rac8 30.Kg1 Bd5 31.Bb2 Rb4 32.Bc3 Ra4 33.Bd5 Nd5 34.b6 Ra3 35.b7 Rb8 36.f3 Rb7 37.Rb7 Qb7 38.Qc4 a4 39.Kf2 Nb6 40.Qe2 Qb8 41.Qe5 Ra2–+ 42.Kg3 Qe5 43.de5 Nd5 44.Bd4 Rd2 45.Ba1 g5 46.Rc8 Kh7 47.Rf8 Ne3 48.f4 Rd1 49.Kf3 Ra1 50.Ke3–/+ gf4 51.Kf4 a3 52.Rf7 Kg6 53.Ra7 a2 54.Ra6 Kf7 55.Ra7 Ke6 56.Ra6 Kd7 57.Ra7 Kc6 58.Ra6 Kb7 59.Ra3 Rf1 (59...Rf1 60.Ke4 a1Q 61.Ra1 Ra1–+) 0–1. pcmvr – Void, playchess.de, 2005.

7.Nf3 Bf5 8.Ng5 Qc8 9.d3 0-0 10.Be2 h6 11.Nge4 Nbd7 12.0-0.

7.Nf3 Bf5 8.h3 0-0 9.g4 Bg6 10.Bg2 Bd3 11.Nh4 Bc4 12.g5.

7.Nf3 h6 8.Bd3 (8.Qc2 Be6 9.Be2 0-0 10.0-0 Nbd7 11.h3 Qc7 12.a4) 8...0-0 9.0-0 Be6 10.Qb3 Nbd7 11.a4 Nb6 12.h3.

7.Nh3 A) 7...Nbd7 8.Bd3 (8.Ng5 h6 9.Nge4 0-0 10.Be2 Ne4 11.Ne4 Nb6 12.0-0) 8...Nb6 9.Ng5 h6 10.Nf3 a4 11.a3 Be6 12.Qe2; B) 7...Bf5 8.Qf3 (8.Ng5 Qc8 9.d3 0-0 10.Be2 Nbd7 11.0-0 h6 12.Nge4) 8...Qd7 9.Be2 a4 10.Nd5 Nd5 11.Qd5 0-0 12.0-0; C) 7...0-0 8.Bd3 (8.Be2 Nbd7 9.0-0 Nb6 10.Qc2 h6 11.f4 Be6 12.f5) 8...Nbd7 9.0-0 h6 10.Qf3 Nb6 11.Ne4 Ne4 12.Qe4.

7.d4 cd4 8.ed4 ed4 9.Qd4 Qe7 10.Kd2 Nbd7 =.

7.Nge2 A) 7...Be6 8.Ng3 (8.Qb3 Nbd7 9.Ng3 Nb6 10.Na4 Be7 11.Bd3 0-0 12.Nb6) 8...Nbd7 9.Bd3 Nb6 10.Qe2 Be7 11.Nf5 0-0 12.0-0; B) 7...Be7 8.Ng3 (8.a3 Bg4 9.h3 Be6 10.Ng3 Nbd7 11.Qf3 Rb8 12.Bd3 ) 8...Be6 9.Bd3 Nbd7 10.Nf5 0-0 11.g4 g6 12.Nh6; C) 7...Nbd7 8.Ng3 (8.Rc1 Nb6 9.Ng3 Be6 10.Na4 g6 11.Bd3 Bg7 12.0-0) 8...Be6 9.Bd3 Nb6 10.Qe2 Be7 11.0-0 0-0 12.Nf5.

7.Qf3 Qc8 8.Be2 Be7 9.Nh3 h6 10.0-0 0-0 11.Rfe1 Re8 12.Nd5.

7.Qf3 Qc8 8.h3 Bg6 9.g4 (9.Nge2 a4 10.g4 Nbd7 11.Ng3 a3 12.Bc1) 9...h6 10.Bg2 (10.Nge2 Be7 11.Bg2 Ra7 12.Ng3) 10...Bd3 (10...e4 11.Qe2+= Qd8 12.f4) 11.Qb7 (11.Nd5 Nbd7 12.Nf6 Nf6 13.Qb7 Qb7 14.Bb7 Rb8 15.Bc6 Ke7+/-) 11...Qb7 12.Bb7 Ra7 13.Bd5 (13.Bf3 Bc4 14.0-0-0 Bd3+/-) 13...Nd5+= 14.cd5 (worse is 14.Nd5 Bc4 15.Nc3 a4+=) 14...Rb7 (14...h5 15.g5+=) 15.a4 Nd7 16.Nge2 Nf6 (16...h5 17.g5+=) 17.f3 (17.f4+/-) 17...e4? (better is 17...Be7!?+/-) 18.Nc1 Bc2 19.fe4 Ne4? (better is 19...c4 20.d3! cd3+–) 20.d3 Nc3 21.Bc3 c4 22.e4 (22.Kd2 cd3 23.Nd3 Bd3 24.Kd3 h5+–) 22...cd3 (22...h5 23.Kd2 Bb3 24.g5+–) 23.Kd2 Be7 24.Nd3 Bb3 25.Bg7 Bg5 26.Kc3 Rg8 27.Bd4 Ba4 28.Ra4 Rb5 29.Kc4 Rb7 30.Ra5 Kd7 31.Ra6 Rc8 32.Rc6! Ra8 33.Ra1 Re8 34.e5 Be7 35.Ra7 Ra7 36.Ba7 Ra8 37.Be3 Ra4 38.Kb3 Re4 39.Bh6 de5 40.Bg7 Re3 41.Rc3 Kd6 42.Ne5 Rc3 43.Kc3 Kd5 44.Nf7 Ke4 45.g5 Kf5 46.Bh6 Kg6 47.Ne5 Kh5 48.Nf3 Bd8 49.Kd3 Kg6 50.Ke4 Bc7 51.Ne5 Kh7 52.Kf5 Ba5 53.h4 Be1 54.Nf3 Bc3 55.Bf8 Ba5 56.h5 Bb6 57.g6 Kg8 58.Bh6 Ba5 59.Ne5 Bc3 60.Nd7 Bg7 61.Bg5 Bc3 62.h6 Kh8 63.Bf6 Bf6 64.Kf6 Kg8 65.g7 Kh7 66.Nf8 Kh6 67.g8Q Kh5 68.Qg5 1–0. Semenko,Georg (1750) – Dlusztus,Kornel, Bayern–ch Seniors, 1993.

7.Qf3 Qc8 8.Nh3 Be7 9.Be2 h6 10.0-0 0-0 11.Nd5 Nd5 12.cd5.

7.Qf3 Qd7 8.Nh3 (8.Be2 Be7 9.Nh3 a4 10.a3 0-0 11.Ng5 Bg4 12.Qg3) 8...Be7 9.Be2 a4 10.Ng5 a3 11.Bc1 0-0 12.Nge4.

7.Nf3 A) 7...Be7 8.h3 (8.Be2 Nbd7 9.0-0 0-0 10.d3 h6 11.e4 Be6 12.Nh4) 8...Nbd7 9.Ng5 Bg6 10.Qf3 Qb6 11.Be2 h6 12.Nge4; B) 7...a4 8.Na4 (8.Nh4 Be6 9.Qf3 a3 10.Bc1 d5 11.cd5 Nd5 12.g3) 8...Nbd7 9.Nc3 Be7 10.Be2 0-0 11.0-0 e4 12.Nh4; C) 7...Nbd7 8.Qb3 (8.g3 Nb6 9.d3 a4 10.Bg2 Be7 11.0-0 0-0 12.e4) 8...Be7 9.Be2 e4 10.Nh4 Be6 11.g3 g5 12.Ng2.

7.h3 A) 7...a4 8.a3 (8.g4 Bg6 9.a3 Nbd7 10.d3 Nb6 11.g5 Nfd7 12.h4) 8...Be7 9.g4 Be6 10.Nf3 Nbd7 11.Ng5 0-0 12.Ne6; B) 7...h5 8.Nf3 (8.Qf3 Qd7 9.Nge2 h4 10.g4 hg3 11.Ng3 Be6 12.Rc1) 8...Nbd7 9.Ng5 Nb6 10.Qf3 Qd7 11.e4 Bg6 12.Bd3; C) 7...Be7 8.g4 (8.Qf3 Qd7 9.g4 Bg6 10.g5 Nh5 11.h4 f5 12.Nd5) 8...Be6 9.Nf3 0-0 10.Ng5 d5 11.Ne6 fe6 12.g5.

6.a4 Qc7 7.Nc3 d5 (7...Be7 8.Be2=) 8.Nf3 Bg4 9.Qb3 (9.h3 Bf3 10.Qf3 e4+=) 9...Bf3 10.gf3 Bb4 (10...d4 11.ed4 ed4 12.Ne4 Ne4 13.fe4= (13.Bd4? Ng5-+)) 11.Be2 (11.cd5!? 0-0 12.dc6 bc6 13.Rc1+=) 11...Bc3 (11...dc4 12.Qc4 0-0 13.Rg1=) 12.Bc3 e4? (12...Nbd7!?=) 13.fe4 (13.Bf6 gf6 14.cd5 ef3 15.Bf3 c5+-) 13...Ne4 (13...de4!? 14.Bf6 gf6+=) 14.Bg7 (14.cd5 0-0 15.dc6 bc6+-) 14...Rg8+/- 15.Bb2 Rg2 16.f3 (16.cd5 Nf2 17.Rf1 Qh2+-) 16...Nc5 (better 16...Nf2!? 17.b6 Qd6=) 17.Qc3 Rh2 18.Rh2 (18.Rg1 Re2 19.Ke2 Qh2 20.Kf1 Qh3 21.Ke1 Qh4 22.Kd1 f6+-) 18...Qh2 19.cd5 b6?? (better 19...Qg3 20.Kd1 Qg1 21.Kc2 Qg6 22.e4 Ncd7+-) 20.dc6 (20.Qh8 Kd7 21.bc6 Kd6 22.Qf6 Ne6 23.Ba3 Kd5+-) 20...Nc6 (20...Qh1 21.Bf1 Qh4 22.Kd1+-) 21.Qh8 Ke7 22.Bf6 Ke6 23.Bc4 (23.Qa8?! Qg1 24.Bf1 Nb4+-; 23.bc6 Rh8 24.Bh8 f6-/+) 23...Kd6 (23...Kf5 24.Qa8 (24.bc6 Rh8 25.Bh8 Qh4 26.Kd1 Qc4-+) 24...Nb4 25.0-0-0 Kf6 26.Qd8 Kg7 27.Qb6 Ncd3 28.Kb1+-) 24.Qa8 (24.bc6?? Rh8 25.d4 Re8 26.dc5 Kc5-+ (26...bc5 27.0-0-0 Kc7 28.Bg5=+)) 24...Nb4 (24...Qg3 25.Kd1 Qf3 26.Kc1 Qf6 27.Qc6 Ke7 28.Qf6 Kf6+-) 25.Qb8 (25.Qb8 Kd7 26.Qd8) 1-0. zembelek (2060) - robytla (1935), Rated Blitz game, lichess.org, 2014.

6.a4 Be6 7.Na3 d5 (7...Be7 8.Nf3=+) 8.cd5 (8.Be5 Ba3 9.cd5 Bg4+=) 8...Bd5 (8...Qd5 9.Nf3 e4 10.Bc4=) 9.Qc2 (9.Be5 Nbd7 10.Bf4 Nc5 11.bc6 bc6+=) 9...Bd6 (9...Nbd7 10.Nc4 e4 11.bc6 Bc6 12.Bc3=+) 10.Nf3 (10.Nc4 e4=) 10...0-0 (10...e4!? 11.Nd4 0-0=+) 11.Be5 (11.Ne5 Re8 12.Nac4 Bb4+=) 11...Be4 (11...Bf3 12.Bd6 (12.gf3? Be5 13.Rb1 Bd6–+) 12...Bg2 13.Bg2 Qd6 14.Nc4+=) 12.Bf6 (12.Qb2 Be7+=) 12...Qf6= 13.Qc1 (better 13.Qc3!? Qg6 14.Nc4=) 13...Bf3–/+ 14.gf3 Qf3 15.Rg1 Bh2 16.Be2 Qf6 (16...Qe4 17.Rg5–/+) 17.Rh1=+ Be5 18.Qb1 Ba1?? (better 18...g6 19.d4 Bd6=+) 19.Qh7 1–0. Agiant – sergio101130, lichess.org, 2019.

6.a4 Be6 7.Nf3 Nbd7 8.d4 e4 9.Ng5 Bf5 10.Nc3 (10.Qc2 h6 11.Nf3 Rc8=) 10...h6=+ 11.Nh3 d5 12.Nf4 Bb4 13.c5 0-0 14.Be2 Kh7 (14...Rc8 15.0-0=) 15.0-0+= Qe7 (15...Bc3 16.Bc3 Kg8 17.Rb1+/-) 16.b6 (16.Na2 g5 17.Nh5 Nh5 18.Bh5 Qf6+/-) 16...g5 17.Nh5 Nh5 18.Bh5 Nf6 19.Na2?? (better 19.Be2+/-) 19...g4-+ 20.h3 Nh5 21.hg4 (better 21.Nb4 ab4 22.hg4-+) 21...Ng7?? (better 21...Rg8 22.f3 ef3 23.Qf3 Bg4 24.Qf7 Rg7 25.Qe7 Re7-+) 22.gf5= Nf5 23.Qh5 Qf6 (23...Nh4 24.Kh1=+) 24.Nb4 (24.Bc3!?=) 24...ab4=+ 25.a5 Rg8 26.Kh2? (better 26.g3=+) 26...Rg5-+ 27.Qh3 Rag8 28.Rg1 Rg4 (28...Nh4! 29.f4 Rh5 30.Raf1-+) 29.g3 R8g5?? (29...Nh4 30.Rg2 Qf3-+ (30...Ng2?! 31.Qg2 h5 32.Rh1-+)) 30.Kg2?? (30.a6 ba6 A) 31.Ra6 Nh4 32.f4 Nf3 33.Kh1 Ng1 34.fg5 Qg5 (34...Nh3 35.gf6 Rg8 36.Kg2+=) 35.Qg4 Qg4 36.Kg1 Qg3 37.Kf1 Qf3 38.Ke1 Qe3 39.Kf1 Qd3 40.Kf2 Qa6-+; B) 31.b7=) 30...Rh4 (30...Ne3 31.Kh2 Qf2 32.Kh1 Rg3 33.Qh2 Qf3 34.Rg2 Qg2 35.Qg2 Rg2 36.a6 Rh5) 31.Rh1 (31.Qh4 Nh4 32.Kf1 Nf3-+) 31...Rh3 (31...Ne3 32.Kg1 Qf3 33.Rh2 Rh3 34.Re1 Rhg3 35.fg3 Rg3 36.Rg2 Qg2) 32.Rh3-+ Kg6 (better 32...Ne3 33.fe3 Qf3 34.Kh2 Qe2 35.Kh1 Qb2 36.Rg1-+) 33.Rah1 (33.Rah1 Ne3! 34.fe3 Qf3 35.Kg1 h5 36.R1h2 Qd1 37.Kg2 Rf5 38.g4 Qe2 39.Kg3 Qg4). yasminoah (1940) - valva_zv (1650), Rated Blitz game, lichess.org, 2014.

6.a4 Bf5 7.Nf3 Nbd7 8.Be2 c5 (8...Be7 9.0-0=) 9.d3 Be7 10.e4 Bg6 11.Nh4 0-0 12.Ng6 fg6 13.0-0 g5 14.Nc3 Qe8 15.Bc1 Nb6 (15...Qg6!?+=) 16.Bg5+/- h6 17.Be3 Qg6 18.f4 ef4 19.Bf4 Rad8 20.Qc1 Nh5 21.Bh5 Qh5 22.Nd5 Nd5 23.cd5 Bf6 24.Rb1 Bd4 25.Kh1 g5 26.Bg3 Rf1 27.Qf1 Rf8 28.Qd1 Qg6 29.Qe2 h5 30.Rf1 Rf1 31.Qf1 h4 32.Be1 Kg7? 33.Ba5+– g4 34.Bd8 Qh5? 35.Be7 Qf7 36.Qf7 Kf7 37.Bd6 h3 38.a5 Ke8 39.a6 ba6 40.ba6 c4 41.dc4 Kd7 42.e5 Ba7 43.c5 Kc8 44.e6 Kd8 45.Bf8 Ke8 46.Bd6 Kd8 47.gh3 gh3 48.Kg1 Ke8 49.Kf2 Kd8 50.Kg3 Ke8 51.Kh3 Kd8 52.Kg4 Ke8 53.Kf5 Kd8 54.Kf6 Ke8 55.Kg7 Kd8 56.Kf7 Bc5 57.Bc5 Kc7 58.e7 Kb8 59.Bb4 Kc7 60.e8Q Kb6 ½–½. bananinha – galaksus (1820), playok.com, 2012.

6.a4 Bf5 7.Nf3 h6 8.Be2 Be7 9.0-0 0-0 10.h3 Nbd7 11.Nh2 (11.Nc3 Rc8=) 11...Nc5 12.d4 Nce4 (12...ed4!? 13.Bd4 Re8=) 13.de5+= de5 14.Be5 Bb4 15.Na3 (15.Nf3 Qe7+=) 15...Nc3 (better 15...Qd1 16.Rfd1 Bc3 17.Bc3 Nc3=) 16.Qc2?? (16.Bc3 Bc3 17.Ra2 Qe7=) 16...Ne2 (better 16...Bc2 17.Bc3 Bc3 18.Nc2 Qd2–+) 17.Qe2= Bd3 18.Qf3 (18.Qb2 Bf1 19.Bf6 Qf6 20.Qf6 gf6 21.Kf1 Rfc8=+) 18...Bf1=+ 19.Nf1 Qd3 20.Bf6 gf6 21.Nb1 (21.Qg4 Kh7 22.Qd4 Rfd8 23.Qf6 Ba3 24.Qf7 Kh8 25.Qf6 Kg8 26.Qe6 Kg7=) 21...Qc4 22.Qf6 (22.Nbd2 Qe6 23.bc6 bc6 24.Rc1=+) 22...Rfe8 (22...Qe6 23.Qf4–/+) 23.bc6 (better 23.Qh6!? Qe6 24.Qe6 Re6 25.bc6 Rc6 26.Nbd2=) 23...Qc6–/+ 24.Qf4 Bd6 (better 24...Rad8–/+) 25.Qd4?? (better 25.Qg4 Kh8 26.Nbd2=+) 25...Be5–+ 26.Qg4 Qg6 (better 26...Kh8 27.Nc3 Bc3–+) 27.Qg6 fg6 28.Ra2 Red8 29.Nbd2 Rd3 30.Nc4 Bc3 31.Ng3 (31.Rc2!?–/+) 31…Rc8–+ (31...Rc8 32.Na3 Be5–+) 0–1. Abdullaevich (1885) – karimBahi (1675), lichess.org, 2020.

6.Qc2 cb5 7.cb5 Be6 8.Nf3 =+.

6.Qc2 g6 7.d3 Bg7 8.a4 0-0 9.Nf3 Be6 10.Nbd2 Nbd7 11.Be2 Rc8 12.Ba3 Nb6 13.Qd1 Re8 14.Rc1 c5 15.Bb2 Nh5 16.Bc3 Nd7 17.Ne4+= Nf8 18.Nfg5 Nf6 19.Nf6 Bf6 20.Ne6+/- Ne6 21.Bf3 Qc7 22.Bd5 b6 23.Qf3 Bg7 24.h4 h6 25.g4 Qe7 26.Kd2 Nc7 27.Be4 Rcd8 28.h5 g5 29.Qf5 d5 30.cd5 Nd5 31.Ke2 Nc3 32.Rc3 Rd6 33.Qf3 Qe6 34.Rc4 Red8 35.Rd1 Qf6 36.Qf6+/- Bf6 37.Rf1 Kg7 38.f4 ef4= 39.ef4 Rd4 40.fg5 Bg5 41.Rf5 Rc4 42.dc4 Rd4 43.Bd5 f6 44.Be6?? Re4–+ (45.Kd3 Re6–+) 0–1. Lietzke – Lehmann, corr, 1973.

6.Nc3 d5 7.Nf3 d4 (7...e4!? 8.Ne5 Bd6=+) 8.ed4+= ed4 9.Na4 c5 10.Qe2 Be6 11.Ng5 Qd6 12.g3 Nbd7 13.Bh3 Ne5 (13...Be7 14.Ne6 fe6 15.Qe6 Qe6 16.Be6+–) 14.f4 Neg4 15.0-0 Be7 16.Rae1 0-0 (16...Bf5 17.Ba3 d3 18.Qe7 Qe7 19.Re7 Ke7 20.Bc5 Kd7 21.Nf7 h5+–) 17.Ne6+– Qe6 18.Qe6 fe6 19.Re6 Rf7 20.Bg2 Bf8 21.h3 Nh6 22.g4 Ne8 23.Rfe1 Nc7 24.R6e5 Rf4 (24...Bd6 25.Nc5 Rf4 26.R5e4 Re4 27.Ne4+– (27.Be4?! Bc5 28.Bb7 Re8 29.Re8 Ne8=; 27.Re4?! Bc5 28.Bd4 Ne6 29.Bc5 Nc5+–)) 25.b6 (25.b6 Bd6 26.bc7 Be5 27.Re5+–; 25.Bb7?! Rb8 26.Bd5 Nd5 27.Rd5 Rc8+–) 1–0. pcmvr – amenhotob (2625), net–chess.com, 2016.

6.Nc3 Be7 7.Nf3 0-0 8.Be2 Nbd7 9.d3 Re8 10.0-0 Nf8 11.Qc2 Qc7 12.Rac1 Ng6 13.Rfd1 Bf5 14.Nd2 Qd7 15.Nf1 Bf8 (15...d5 16.Ng3=) 16.Ng3+= Bg4 17.f3 Be6 18.d4 ed4 19.ed4 (19.Rd4 Rac8=) 19...d5 20.c5 Nf4 21.Bf1 h5 22.Qd2 Ng6 23.Re1 h4 24.Nh1 Nh5 25.Nf2 Nhf4 26.Nd3 Nd3 27.Bd3 Bf5 28.Bf1 a4 29.Re8 Qe8 30.Re1 Qd7 31.b6 Be7 32.Qd1 (32.a3 Bf6+=) 32...a3 33.Bc1 Bf6 34.Be3 Ne7 35.Bf4 g5 (35...Ng6 36.Bc7=) 36.Be5 Be5 37.Re5 Ng6 38.Re3 Nf4 (38...Re8 39.Re8 Qe8 40.Qd2+=) 39.g3 (39.Ne2 Re8 40.Ra3 Ne2 41.Be2 Qe6+–) 39...hg3 40.hg3 Ne6 41.Re5 Ng7 42.Qe1 Kf8 43.Kf2 f6 44.Re3 Kf7 45.Bg2 (45.Ne2 g4+–) 45...Rh8 (45...Bh3 46.Nb1+=) 46.Ne2+– Bh3 47.g4 (better 47.Qg1+–) 47...f5? (better 47...Bg2 48.Kg2 f5+=) 48.Qh1+– (48.Ra3?! fg4 49.Qh1 Re8=) 48...fg4 49.fg4 (49.Ra3?! Re8=) 49...Bg2 (49...Qg4 50.Rh3 (50.Bh3?! Qh4 51.Kg2 g4+–) 50...Rh3 51.Qh3 Qf5 52.Qf5 Nf5 53.Bh3+–) 50.Qh8 (50.Qg2?! Ne8+=) 50...Be4 51.Qh3 (51.Ra3 Qe7+–) 51...Qe6 52.Ke1 Qf6 53.Qf1 Ne6 54.Qf6 Kf6 55.Ra3 1–0. Simonyi,Z (2250) – Nestorovic,I (2005), 22nd Battle of Senta Open, 2018.

6.d4 ed4 7.Bd4 Be7 8.b6 (better 8.Nf3!?+=) 8...0-0 9.Bf6? (better 9.Bd3=+) 9...Bf6–+ (9...gf6?! 10.Bd3=) 10.Bd3?? (10.Nd2 Ba1 11.Qa1 Qb6 12.Ngf3–+) 10...Ba1 11.Bc2 (11.Nd2 Be5–+) 11...Bf6 12.Qd3 Threatening mate... how? 12...Be6 (better 12...g6–+) 13.Qh7 1–0. MARYMARY – Papa Joe (1640), ChessWorld.net, 2017.

6.d4 e4 =.

6.Be2 Be6 7.Nf3 Be7 8.Nc3 Nbd7 9.d4 ed4 (9...0-0 10.0-0=) 10.Nd4+= Ne5 11.Ne6 fe6 12.0-0 0-0 13.Qc2 Ng6 14.Bd3 (14.Rfd1 Rc8+=) 14...Ne5= 15.Be2 Qc7 16.Ne4 Ne4 (better 16...cb5!? 17.Ng5 Qc8+=) 17.Qe4+/- Bf6 18.f4 d5? (better 18...Ng6 19.Qe6 Kh8 20.Bf6 Rf6+/-) 19.Be5+- de4 20.Bc7 Ba1 21.Ra1 cb5 22.cb5 Rac8 23.Ba5 Rc2 (23...e5 24.fe5 Rfe8 25.e6+-) 24.Bd1 Rb2 25.Bb3 Kf7 26.Bc3 Re2 27.f5 Ke8 (27...Rd8 28.Rf1 Re8 29.fe6 Kg6 30.Bb4 Re3 31.e7 Rb3 32.ab3+-) 28.Be6 g6 (28...Rf7 29.Bf7 Kf7 30.Rc1 Re3 31.Be5+-) 29.Bg7 (better 29.Rc1 Rf5 30.Bb4 Re1 31.Be1 Rb5+-) 29...Rf5 30.Bf5 gf5 31.Bd4 Ke7 (31...Rd2 32.Rf1+-) 32.a4 Ke6 (32...f4 33.a5 f3 34.gf3 ef3 35.a6 Rg2 36.Kf1 ba6 37.ba6+-) 33.a5 Kd5 (33...Rc2 34.a6 Rc8 35.a7+-) 34.a6 f4 (34...ba6 35.b6 Kc6 36.Rc1 Kb7 37.Rc7 Kb8+-) 35.ab7 f3 36.b8Q f2 37.Kf1 Re1 38.Re1 fe1Q 39.Ke1 Kc4 40.b6 h5 (40...Kb5 41.b7 Kc6 42.Qc8 Kb5 43.b8Q Ka5 44.Qc5 Ka4 45.Qbb5) 41.b7 h4 (41...Kb4 42.Qg8 Ka5 43.b8Q h4 44.Qa2) 42.Qc8 (42.Qg8 Kb4 43.b8Q Ka4 44.Qa2) 42...Kd3 (42...Kb5 43.b8Q Ka5 44.Qc5 Ka4 45.Qbb5) 43.Qc3 1-0. onur604 (2320) - Ero_Sannin (2460), Casual Rapid game, lichess.org, 2021.

6.Nf3 Bd7 7.Be2 cb5 8.cb5 Qb6 9.Nc3 Be7 10.0-0 0-0 11.d4 ed4? (11...e4!? 12.Nd2 d5=) 12.Nd4 (better 12.Na4 Qd8 13.Qd4+- (13.Nd4?! Be6+/-)) 12...Be8? (better 12...d5+/-) 13.Nf5+- Bd8 14.Nd6 (14.Nd5 Nd5 15.Qd5 Bd7 16.Bg7 Bf5 17.Bf8 Be6 18.Qd6 Nd7 19.Qb6 Nb6+-) 14...Nbd7 15.Bf3 (15.Na4 Qa7+-) 15...Nc5 16.a4 (16.Ba3!? Nfd7+-) 16...Bc7 17.Ne8 (17.Nf5!? Bd7 18.Ne7 Kh8+-) 17...Rfe8+/- 18.Nd5 Nd5 19.Qd5 Rad8 20.Qg5 Ne6 21.Qg4 Rd2 22.Bc3 Rc2 23.Rfc1 (better 23.Rac1 Bh2 24.Kh2 Qc7 25.Kg1 Qc3 26.Rc2 Qc2 27.Bb7+/-) 23...Qd6?? (better 23...Bh2 24.Kh2 Qc7 25.Qg3 Qc3 26.Rc2 Qa1+=) 24.Rc2+- Qh2 25.Kf1 Qh1 (25...b6 26.Rd1+-) 26.Ke2 Qh2 (26...Qh6 27.Bb7 Nf4 28.Ke1 Nd3 29.Kf1+-) 27.g3 Bb6 (27...h5 28.Qh5 Qh5 29.Bh5 b6+-) 28.Rh1 Nf4 29.gf4 Re3 30.Kd1 Qf2 31.Qg7 1-0. benachamohcine (2010) - enmeenme (1670), Rated Blitz game, lichess.org, 2014.

7.ab5 b6 8.Qf3 Ra7 9.Nc3 Bb7 10.e4 Be7 11.Qe3 0-0 12.f4 ef4 13.Qf4 Nbd7 (13...Re8 14.Kd1=) 14.Nf3 Nc5 e4 becomes the focus of attention 15.d4 (better 15.d3!?=) 15...Nce4-/+ 16.Bd3 (16.Ne4 Be4 17.d5 Re8=+) 16...Nc3 17.Bc3 Qd7 (better 17...d5!? 18.0-0 dc4 19.Bc4 Bd5-/+) 18.d5= Rc8 19.Bf5 (better 19.Bd4 Nh5 20.Qe4+=) 19...Qd8?? (better 19...Rc4! 20.Bh7 Kh7 21.Qc4 Nd5=+) 20.Bc8+/- Qc8 21.Ng5?? (better 21.Qd4 Qc7 22.Ra4+/-) 21...Bd5-/+ 22.Bf6 (22.cd5 Nd5 Double attack (22...Qc3 Pinning; 22...Qc3 Deflection; 22...Qc5 Decoy)) 22...Bg2?? (22...Bf6 23.cd5 Re7 24.Ne6 Ba1 25.0-0 fe6 26.Ra1 Qc5 27.Kh1-+) 23.Rg1?? (better 23.Bd4 f6 24.Rg1 fg5 25.Qc1=) 23...Bb7?? (better 23...Bf6 24.Ra4 Re7 25.Kd1 Be5-+) 24.Be7 (24.Bg7 Bg5 25.Rg5 Qe6 26.Kd2 Be4+-) 24...Qe8 25.Nf7 (better 25.Qf7 Qf7 26.Nf7 Kf7 27.Bd8+-) 25...Bd5?? (25...Qe7!? 26.Kf2 Qf7 27.Qf7 Kf7+/-) 26.Qg5 (26.Rg7! Kg7 27.Qf6 Kg8 28.Nh6) 26...Qe7+- 27.Qe7?? (27.Kd2 Qg5 28.Ng5 (28.Rg5?! Bf7 29.Rg4 Re7=) 28...Bc4 29.Rae1+-) 27...Re7= 28.Ne5?? (better 28.Kd2 Bf7 29.Rg4=) 28…Bc4 0-1. hurvajsmanka (1730) - Tendohhhh (1645), Rated Bullet tournament, lichess.org, 2014.

7.ab5 b6 8.Nf3 Bb7 9.d4 Nbd7 10.Nbd2 e4 11.Ng5 h6 12.Nh3 g5 (12...d5 13.Nf4=) 13.Be2+= Bg7 (13...d5 14.0-0+=) 14.0-0+/- 0-0 15.Ba3 Qc7 16.Rc1 Rfc8 17.Bg4 (17.Qa4 Nf8+=) 17...Bf8 (better 17...Ng4!? 18.Qg4 Nf6=) 18.Bf5+/- Re8 19.Qc2 e4 seems the pivot of the position 19...Rac8 20.Kh1 d5 21.c5 (21.Qa4!?+/-) 21...bc5= 22.dc5 Bc5 23.Nb3 Bb6 24.Qc7 (better 24.Qd2!? Qe5 25.Bd7 Nd7 26.Bb2=+) 24...Rc7-/+ (worse 24...Bc7 25.Nc5 Nc5 26.Bc8 Bc8 27.Rc5=) 25.Rc7 Bc7 26.Rc1 Be5 (better 26...Bb6-/+) 27.Na5+= Rb8 (27...Ra8 28.Bb4 Ra7 29.f3+= (worse 29.Nb7 Rb7 30.f4 ef3-/+)) 28.Nc6 (worse 28.Nb7 Rb7 29.Rb1 Nb6=+) 28...Bc6 (better 28...Ra8!? 29.Be7 Bb2+=) 29.bc6+- Nb6 30.c7 Bc7 31.Rc7 Nc4 32.Be7 Rb1 (better 32...Ne8 33.Rd7 Nb6+-) 33.Ng1 Kg7 34.h4! Ne5 (34...gh4 35.Rc6 Decoy) 35.Rc8 (35.Bc5!? Nfg4 36.Bg4 Ng4+-) 35...Nfg4+/- 36.Rc2 (36.Bf8 Kf6 37.Bg4 Ng4+/-) 36...gh4 (better 36...Rf1!? 37.hg5 Nf2 38.Rf2 Rf2 39.gh6 Kh6=) 37.Bh4 h5 38.Rc7 (38.Bg4 hg4 39.Kh2 Ng6+-) 38...Nd3 (38...Rb2 39.Bg4 Ng4 40.Rd7+/-) 39.Be6 (better 39.Bg4!? hg4 40.Kh2+-) 39...Ndf2+/- 40.Bf2 Nf2 41.Kh2 Ng4 42.Kg3?? (42.Bg4 hg4 43.Ne2 Re1+-) 42...Nh6?? (better 42...Rg1 43.Rf7 Kg6-/+) 43.Bd5?? (better 43.Ne2 Kf6 44.Bh3+-) 43...Re1?? (43...Rg1 44.Be4 Rf1 45.Bd3=) 44.Kf4?? (better 44.Nh3 Re3 45.Kf4+-) 44...Rg1= 45.Be4 Rf1 46.Kg3 Kf6 47.Bf3 (47.Rc5 Ng4=) 47...Kg5=+ 48.Rc5 f5 49.Bh5 (49.e4 h4 50.Kh2 Re1=+) 49...Kh5-/+ 50.e4 Kg5 0-1. jhonores (2205) - SMi_1970 (2280), Rated Blitz game, lichess.org, 2020.

7.ab5 Be6 8.Nf3 Nbd7 9.Be2 Be7 (9...Qc7 10.0-0=) 10.0-0 0-0 11.d4 e4 12.Nfd2 Rc8 (12...Qc8 13.Nc3+=) 13.d5 Bf5 14.Nc3 Nc5 15.Re1 Re8 16.Bf1 (16.Na4 Ra8+=) 16...Bg6 (16...Nfd7 17.Na4=) 17.Na4 b6 18.Nc5 dc5 19.g3 (19.Be2 Qd6=) 19...Bd6= 20.Bg2 Be5 21.Be5 Re5 22.Qc2 e4 draws heavy fire 22...Qe8 23.Qc3 h6 24.Rac1 Nd7 (24...Rd8 25.h3=) 25.Qc2 f5 26.f3 (26.Ra1 Bh5=) 26...ef3 27.Nf3 Re3 28.Re3 (better 28.Qf2!? Re1 29.Re1=) 28...Qe3-/+ 29.Kf1? (29.Kh1 f4 30.Qd2-/+) 29...Ne5?? (better 29...f4 30.Qg6 Qc1 31.Kf2 Qe3 32.Kf1 Nf6-+) 30.Re1 (better 30.Ne5 Qe5 31.Re1=+) 30...Nf3?? (better 30...Ng4 31.Qb2 Qd3 32.Kg1 Re8 (32...Qc4?! 33.h3=) 33.Re8 Be8-/+) 31.Bf3 (better 31.Re3 Nd4 32.Qf2+-) 31...Qf3-+ 32.Kg1 Rf8 Black plans f4 (32...Re8 33.Re8 Be8 34.d6-+) 33.Qd2 (33.Qf2 Qc3-+) 33...Kh7 (33...f4!? 34.Rf1 Qe3 35.Qe3 fe3 36.Re1-+) 34.Re3 (34.Rf1 Qb3 35.Qc1 f4 36.Rf4 Rf4 37.Qf4 Qd1 38.Qf1 Qd4 39.Qf2 Qc4-+) 34...Qg4 35.Qg2 (35.Qc3 Rf7 36.Rf3 f4-+) 35...f4 (better 35...Qc4 36.Qd2-+) 36.Re6 (36.Qf3 Qf5 (36...fe3 37.Qg4 Bd3 38.Qd1 Rf1 39.Qf1 Bf1 40.Kf1-+) 37.gf4 Qb1 38.Kg2 Qc1-+) 36...Qd1 (better 36...fg3 37.Qg3 Qd4 38.Qe3 Qc4-+) 37.Kf2 (37.Qf1 Qd4 38.Qf2 Qc4 39.Rb6 fg3 40.Qf8 Qc1 41.Kg2 Be4 42.Kh3-+) 37...fg3 38.Kg3 Qd3 39.Kh4 Qc4 (39...Qd4 40.Kh3 Bf5 41.Kg3 Qg4 42.Kf2 Bc2 43.Rf6 Rf6 44.Ke3 Qg2 45.d6 Qf2) 40.Kh3 Qd3 (40...Bf5 41.Kg3 Qg4 42.Kf2 Bc2 43.Rf6 Rf6 44.Ke3 Qg2 45.d6 Qf2) 41.Kh4 Qd4 42.Qg4 (42.Qe4 Qf2 43.Kh3 Be4 44.Rf6 Qg2 45.Kh4 g5 46.Kh5 Qh3) 42...Qg4 (42...Qf2 43.Kh3 Rf3 44.Qg3 Bf5 45.Kh4 Rf4 46.Kh5 Bg4 47.Qg4 Qh2 48.Qh4 Qh4) 43.Kg4-+ Bf5 44.Kf4 Be6 (44...Be6 45.Ke5 a4 46.de6 a3-+) 0-1. hurvajsmanka (1690) - djvoja23 (2005), Rated Bullet tournament, lichess.org, 2013.

7.cb5 b6 8.Nc3 Bb7 9.Nf3 Be7 10.g3 (10.Be2 Nbd7=) 10...0-0 11.Bg2 Nbd7 12.d4 e4 13.Ng5 d5 14.0-0 h6 15.Nh3 Rc8 16.Nf4 g5 17.Nh5 Nh5 18.Qh5 Kg7 19.Qe2 Nf6 20.Bh3 Rc7 21.Rac1 h5 Black intends g4 22.Bg2 g4 23.h4 Kg6 24.Qd2 Bb4 25.Qd1 Qd7 26.Qb3 Rd8 27.Ne2 Rc1 28.Nf4 Kg7 29.Rc1 Bd2 30.Rc2 Bb4 31.Ba3 Ba3 32.Qa3 Qd6? (better is 32...Rc8!? 33.Rc8 Bc8+=) 33.Qd6+– Rd6 34.Rc7 Rd7 35.Nh5! Kg6 (35...Nh5 36.Rd7 Deflection (36.Rd7 Overloading)) 36.Nf4 Kg7 37.Rc1 Kh6 38.Bf1 Nh5 39.Nh5 Kh5 40.Be2 f5 41.Kf1 f4?? (better is 41...Kg6+–) 42.ef4 Rf7 (42...Rg7 43.Ke1+–) 43.Ke1 Bc8 (43...Rh7+–) 44.Rc8 1–0. pierred – anony, internet, 2014.

7.cb5 Bd7 8.Nf3 b6 (8...Be7 9.Be2=) 9.Nc3+= Be7 (9...e4 10.Nd4+=) 10.Bc4 (10.e4 Bg4+=) 10...0-0 (10...Bg4 11.Nd5=) 11.d4+= e4 12.Ne4 Ne4 13.Bd5 Nf2 14.Kf2 Ra7 15.Qb3 Bg4 16.Rac1 Bf3 (16...Nd7 17.h3 Bf3 18.Bf3+=) 17.Bf3 Bf6 (17...Re8 18.Rc3+=) 18.Rhe1 Re8 19.Qd5 1–0. Janek – Tempoh, internet, 2017.

7.cb5 Be6 8.Nf3 h6 (8...Nbd7 9.Be2=) 9.Be2 Be7 10.0-0 0-0 11.Nc3 Nbd7 12.d4 e4 13.Nd2 d5 14.f4 Nb6 15.Rc1 Qd7 16.Nb3 Nc4 (16...Ng4!? 17.Qd2 Nc4 18.Bc4 dc4=+) 17.Bc4= dc4 18.Nc5 Bc5 19.dc5 Qd1 20.Rfd1 (20.Nd1 Rac8+–) 20...Rad8 21.Kf2 (21.Ne2 Rd1 22.Rd1 Bg4+=) 21...Ng4 (21...Rd3 22.Rd3 ed3 23.e4=+) 22.Kg1= f5 Black gets the initiative 23.Rd8 Rd8 24.Rd1 (24.Nd1 h5+=) 24...Rd3=+ 25.Rd3 cd3 26.Bc1 (26.Nd1 g5=+) 26...Kf7 27.h3 Nf6 28.Bd2 Nd7 29.c6 bc6 30.bc6 The passed pawn on c6 quickly leads to threats 30...Nb6 31.Nb5 (better 31.Kf2!?–/+) 31...Nc4–+ (31...Na4?! 32.Ba5 Ke7 33.Bb4 Kf6 34.Kf2=) 32.Bc3 d2 33.Bd2 Nd2 34.c7 Nc4 35.Kf2 Ke7 36.Nd4 Bc8 37.g4 (37.Nb5 Kd7 38.g4 fg4 39.hg4 Nb2–+) 37...fg4 38.hg4 Bg4 39.f5 Kd7 40.Kg3 Bh5 (40...Ne3!? 41.f6 gf6 42.Kf4–+) 41.Kf4 Kc7 (41...Bf3 42.Ne6–+) 42.Ne6 Kc6 (42...Kd6 43.Ke4 Bf7 44.Ng7–+) 43.Ng7 (43.Ke4 Bd1–+) 43...Bd1 44.Ke4 Ba4 45.Kd4 Nb6 46.e4 (46.Ne6 Bb3 47.Nc5 a4–+) 46...Bb5 (46...Bb3 47.e5–+) 47.e5 (47.f6 Bc4 48.Kc3 Kc5–+) 47...a4 48.e6 (48.f6 a3 49.Kc3 Bc4–+) 48...Nd5 49.f6 Nf6 50.Kc3 Kd6 51.Nf5 Ke5 52.Nh6 Ke6 53.Kb4 (53.Kb2 Bc6–+) 53...Be8 54.Ka3 Kd5 (better 54...Ke5!? 55.Kb2–+) 55.Nf5 Kc5 56.Ne3 Ne4 57.Kb2 Kb4 58.Nc2 Kb5 59.Na3 Kc5 60.Nc2 Nd6 61.Na3 Bf7 62.Nc2 Bg6 63.Ne3 Nb5 64.Nd1 (64.Ka1–+) 64...a3 65.Ka1 (65.Ka2–+) 65...Kb4 66.Nb2 Kb3 (66...Nd4 67.Ka2 Bf7 68.Kb1 a2 69.Kc1 a1Q 70.Kd2 Qb2 71.Ke3 Qc3 72.Kf4 Ne2 73.Ke4 Bg6 74.Kd5 Bf5 75.Kd6 Qc5) 67.Nd3 Kc3 (67...Bd3?!=) 68.Nc1 Bf7 69.Kb1 (69.Na2 Ba2 70.Ka2–+) 69...Nd4 70.Ka1 Be6 71.Kb1 Bc4 72.Ka1 Nc2 (72...Kd2 73.Kb1 Be6 74.Ka1–+) 73.Kb1 Nd4 (73...Bg8 74.Ne2 Kd3 75.Nc1 Kd2 76.Nb3 Kc3 77.Nc1–+) 74.Ka1 Kc2 75.Na2 (75.Ne2 Be2 76.Ka2–+) 75…Nb3 0–1. BeepBeepImAJeep – String_dogg (1640), IM BeepBeepImAJeep simul, 2017.

7.d3 0-0 8.Be2 Nbd7 (8...e4 9.de4 Ne4 10.Nd2=) 9.Nf3 e4 (9...Qc7 10.Nbd2=) 10.de4 Ne4 11.Nc3 Nc3 12.Bc3 Bf6 13.Rc1 Nc5= 14.0-0 Bc3 15.Rc3 Qf6 16.Rc1 (16.Nd4 Bd7=) 16...Rd8 (16...Bg4 17.Nd4 Be2 18.Ne2=) 17.Nd4 Bd7 18.Bf3 Rac8 19.Qd2 Na4 (19...cb5 A) 20.Nb5 Nb3 (20...Na4?! 21.Qa5 Nc5 22.Rcd1=) 21.Qc3 Nc1 22.Qf6 gf6 23.Rc1 d5–/+; B) 20.ab5?! a4=; C) 20.cb5 b6 21.Qd1=) 20.Qa5+= Nc5 21.Rfd1 Be8 22.Qb6 Na4 23.Qb7+/- cb5 24.cb5 Nc3 25.Qa6 Rc5 Increasing the pressure on the isolated pawn on b5 26.Rc3 Rc3+= 27.b6 d5 28.Qa5+/- Rc4 29.b7 Ra4 30.Qc7 Rb4 31.Bd5 Rd5 32.b8Q Rb8 33.Qb8 Rd8 34.Qb4 h6 35.h3 Bc6 36.Qb1 Ba8 37.Qc2 Qg5 38.f4 Qd5 39.Rd2 Re8 40.Nf3 Qe6 41.Ne5+/- f6 42.Qg6 fe5 43.Qe6 Re6 44.Rd8 Kf7 45.Ra8 ef4 46.ef4 Re4 47.g3 g5 48.Ra7 Kg6 49.Ra6 Kh7 50.f5 h5 51.Ra7 Kh6+/- 52.f6 g4 53.Re7 Ra4 54.hg4 hg4 55.Rg7+/- Ra6 56.Rg4 Rf6 57.Kg2 Ra6 58.Kh3 Kh5 59.Rg8 Ra3 60.Rb8 Ra5 61.g4 Kg5 62.Rg8 Kh6 63.Kh4 Ra6 64.Rg5 Rb6 65.Rc5 Kg6 66.Rg5 Kh6 67.Ra5 Kg6 68.Ra4 Kh6 69.Kg3 Kg5 70.Ra5 Kg6 71.Re5 Ra6 72.Rb5 Rc6 73.Rb8 Rc3 74.Kh4 Rc6 75.Rf8 Ra6 76.Rf5 Ra1 77.Rg5 Kh6 78.Rf5 Kg6 79.Kg3 Ra3= 80.Kf4 Ra4 81.Kf3 Ra3 82.Kf4 Ra4 83.Kg3 Ra3 84.Kh4 Ra1 85.Rg5 Kh6 86.Rg8 Ra6 87.Rh8 Kg6 88.Rh5 Ra3 89.Rg5 Kh6 90.Rb5 Ra6 91.Kg3 Kg6 92.Re5 Ra3 93.Kf4 Ra4 94.Kg3 Ra3 95.Kh4 Ra6 96.Re4 Rb6 97.Ra4 Rc6 98.Ra5 Rb6 99.Rc5 Ra6 100.Rc4 Rb6 101.Re4 Ra6 102.Rf4 Ra1 103.Rf3 Ra5 104.Rf8 Ra6 105.Rh8 Ra1 106.Rg8 Kh6 107.g5 Kh7 108.Rc8 Rh1 109.Kg4 Rg1 110.Kf4 Rf1 111.Kg4 Rg1 112.Kf5 Rf1 113.Ke6 Re1 114.Kf7 Rf1 115.Ke6 Re1 116.Kf5 Rf1 117.Ke4 Re1 118.Kf3 Rf1 119.Kg3 Rg1 120.Kf4 Rf1 121.Ke4 ½–½. Enxtuul,Altanolzii (1975) – Voiska,Margarita (2315), 38th Olympiad w, 2008.

7.Nf3 0-0 8.Be2 e4 9.Nd4 c5 (9...d5 10.Qc2=+) 10.Nb3= b6 (10...d5 11.Bf6 Bf6 12.Nc3 dc4 13.Bc4 Bc3 14.dc3=) 11.0-0 d5 12.d4 1–0. GuestVMZB – GuestDSVH, freechess.org, 2018.

7.Nf3 0-0 8.Be2 Re8 9.0-0 Bf8 (9...e4 10.Nd4=) 10.d4+= e4 11.Nfd2 Nbd7 12.Nc3 g6 (12...Nb6 13.bc6 bc6 14.Rb1=) 13.Qb3 Bg7 14.Rac1 Nf8 (14...c5 15.d5+=) 15.Rfe1 h5 (15...Bf5 16.Qd1+=) 16.Qc2+– Bf5 17.bc6 bc6 18.Ba3 h4 19.d5 c5 20.Nb5 h3 21.g3 N8h7 22.Bb2 Ng5 23.Kh1 Qd7 24.Qd1 (better 24.Bc3=) 24...Rad8?? (better 24...Ng4 25.Bg4 Bg4=+ (worse 25...Bb2 26.Bf5 gf5 27.Rc2+–)) 25.Nb3?? (better 25.Bf6!? Bf6 26.g4+–) 25...Qe7?? (better 25...Ng4 26.Bg4 Bg4–+ (26...Bb2?! 27.Bf5 Qf5 28.Rc2=)) 26.Na5+– Ra8 27.Nc6 Qd7 28.a5?? (better 28.Bf6 Bf6 29.g4+–) 28...Bg4?? (better 28...Ng4 29.Bg4 Bg4–/+) 29.Bf6+– Be2 30.Qe2 Bf6 31.Ra1 (better 31.Nc3+–) 31...Nf3=+ 32.a6? (32.Reb1 Ba1 33.Ra1 Ra6=) 32...Ba1 (better 32...Ne1 33.Re1 Ra6–+) 33.Ra1+= f5 34.a7 Qb7? (better 34...Rf8!?+=) 35.Nd6+– Qg7 Threatening mate... how? 36.Qa2 Rf8 37.Nb5 (37.Rb1 Ne5 38.Rb7 Qf6 39.Ne7 Kh7+–) 37...g5 38.d6 f4 (38...Rf7 39.Rd1+–) 39.ef4 (39.Ne7 Kh7 40.Nc7 fg3 41.fg3 Qf7+–) 39...gf4 40.Rf1?? (better 40.Ne7 Kh7 41.Nc7 fg3 42.hg3+– (42.fg3 Ra7 43.Qa7 Qb2 44.Qa2 Ne1 45.Re1 Qa2 46.Rg1 Qe2 47.g4 Qf3 48.Rg2 Qg2)) 40...fg3 (40...Nh2 41.Ne7 Kh8=+) 41.fg3?? (41.hg3 Qf6 42.Ne7 Kf7 43.Qe2+–) 41...Kh8?? (41...Nd4 42.Rd1 Qf7 43.Ne7 Kh7–+) 42.Qe2 Qh7? (better 42...Ne5 43.Ne5 Qe5+–) 43.Nc7 Rac8 (43...e3 44.Qb2 (44.Na8 Qe4 45.Ne5 Ne5 46.Kg1 Rf1 47.Qf1 Nf3 48.Kh1 e2 49.Qh3 Nh4 50.Kg1 e1Q 51.Qf1 Qg2) 44...Nd4 45.Rf8 Rf8 46.Qa1 Qe4 47.Kg1 Qg2) 44.a8Q (44.Ne7 Nd2 45.Nc8 Rf1 46.Qf1 Nf1 47.a8Q+–) 44...Ra8 45.Na8 Ra8 46.Ne7 (46.Rd1 Qg6+–) 46...Rd8 (46...Qf7 47.Rd1+– (47.Qe4 Ra2 48.Ng6 Kg7 49.Qe5 Kg6 50.Qh5 Kh5 51.g4 Kg5 52.Rf3 Qf3 53.Kg1 Qd1)) 47.Nd5 (better 47.Qb2 Qg7 48.Qb6+–) 47...Rd6?? (better 47...Qf5+–) 48.Nf4 (48.Qb2 Qg7 49.Qb8 Rd8 50.Qd8 Qg8 51.Qd6+–) 48...Rd8 (48...Rd2 49.Rd1 Re2 50.Ne2 Qb7–+) 49.Qe3 (better 49.Qb2 Rd4 50.Qb8 Qg8 51.Qb6+–) 49...Re8?? (better 49...Rd2 50.Ne2 Qg6=) 50.Rf3+– Qd7 The mate threat is Qd1 51.Rf2 (better 51.Rf1 Qf5 52.g4 Qg4 53.Nh3+–) 51...Qd1 52.Qe1 (52.Qe1 Qe1 53.Rf1 Qf1; 52.Rf1 Qf1 53.Qg1 Qf3 54.Ng2 Rd8 55.Qa1 Kg8 56.Qg1 hg2 57.Qg2 Rd1) 1–0. BeepBeepImAJeep (2620) – KillerBateman (2475), lichess.org, 2015.

7.Nf3 0-0 8.Be2 Bg4 9.0-0= Re8 10.Nc3 Nbd7 11.h3 Bh5 12.Qc2 (12.g4 Bg6=) 12...Bg6 (12...d5 13.d3=) 13.Rfc1?? (better 13.d3=) 13…Bc2–+ (13...Bc2 14.Rc2 e4–+) 0–1. RichardSommer (2010) – LexLawless (1990), lichess.org, 2020.

7.Nf3 Nbd7 8.Be2 0-0 9.0-0 c5 10.d4 ed4 11.ed4 b6 12.Nbd2 Re8 13.Rc1 Bf8 (13...Bb7 14.d5+=) 14.Re1 Bb7 15.d5 Bc8 16.h3 (16.Bd3 Re1 17.Qe1 g6+–) 16...h6 (16...g6 17.Qc2+–) 17.Nf1 Nh7 18.Bd3 Ndf6 (18...Re1 19.Qe1 Ng5 20.Ng5 Qg5 21.Qe4+–) 19.Re8 Ne8 20.Ne3 Bd7 21.Qc2 Nhf6 22.Re1 Qc7 (22...g6 23.Bg6 fg6 24.Qg6 Bg7 25.Nh4=) 23.Nf5 Bf5 24.Bf5 g6 25.Bg6 (better 25.Bd3!?+–) 25...fg6+= 26.Qg6 The passed pawn on f2 will become decisive later 26...Bg7 27.Re6 (27.Bf6!? Nf6 28.Re6+–) 27...Qf7= 28.Qg3 Nc7?? (better 28...Kh7=) 29.Rd6 (better 29.Rf6 Qe7 30.Rd6+–) 29...Re8?? (29...Ne4 30.Qg7 Qg7 31.Bg7 Nd6 32.Be5–/+) 30.Nh4 (better 30.Rf6 Qd7 31.Rd6+–) 30...Ne4–/+ 31.Qg7 Qg7 32.Bg7?? (better 32.Rg6 Qg6 33.Ng6–/+) 32...Nd6–+ 33.Bh6 Nc4 34.Bf4 (34.Nf3 Nd5 35.Bc1 Nc3–+) 34...Nd5 35.Bg3 (35.Bg5 Nc3–+) 35...Nb2 36.Nf3 (36.Nf5 Na4 37.Nd6 Re1 38.Kh2 Nb2–+) 36...Na4 37.Ne5 Nac3 38.Nc4 (38.Kf1 a4 39.Nc4 Nb1–+) 38...Nb5 39.Kh2 (39.Nb2 Nbc3–+) 39...a4 40.Nd6 (40.h4–+) 40...Nd6 41.Bd6 a3 42.Be5 Re5 43.f4 Re2 (43...Nf4 44.Kg3 Ne2 45.Kf2 a2 46.g3 a1Q 47.Kf3 Qg1 48.g4 Qf1) 44.Kg3 a2 45.Kg4 a1Q 46.g3 (46.h4 Qg7 47.Kf5 Ne7) 46...Qg7 47.Kh4 (47.Kf3 Re3 48.Kf2 Qg3 49.Kf1 Re1) 47...Ne3 (47...Rg2 48.f5 Qg3 49.Kh5 Qh3) 48.g4 Rg2 49.f5 (49.Kh5 Ng4! 50.hg4 Rh2) 49...Rg4! 50.Kh5 (50.hg4 Qg4 A classical mating theme) 50...Rg5 (50...Qg5) 51.Kh4 Rg4!? 52.Kh5 (52.hg4 Qg4 The nicest combinations are those leading to mate) 52…Qg5 0–1. BeepBeepImAJeep (2620) – abricot (2190), lichess.org, 2016.

7.Nf3 Be6 (7...e4 8.Nd4=) 8.Nc3 cb5 (8...0-0 9.d4=) 9.cb5 (9.ab5 0-0=) 9...b6 (9...0-0 10.d4=) 10.d3 (10.d4 e4 11.d5 ef3 12.de6 fe6 13.Qf3 Nbd7=) 10...Nbd7 11.e4 (11.Ng5 0-0=) 11...Nc5 (11...d5 12.d4=+) 12.Be2 0-0 13.0-0 h6 (13...Rc8 14.Re1=) 14.h3 (14.d4 Nce4 15.Ne4 Ne4=) 14...Rc8 15.Ba3? (better is 15.Re1=+) 15...Nd3?? (better is 15...Nb3 16.Bb2 Na1 17.Ba1 Nh7–/+) 16.Qd3+– Bc4 (16...Nh5 17.Nd5 Bd5 18.Qd5+–) 17.Qe3 Be2 18.Ne2 Re8 19.Nh4 Bf8 20.Nf5 Kh7 21.Rad1 Re6 22.f4 ef4 23.Rf4 d5 24.Bf8 Qf8 25.Qd4 de4 26.g4 Qa3+/- 27.Kh2 Rc2 28.Rf2 e3 29.Rg2 Qa2? 30.Re1 Rd2+/- 31.Qf4 Qd5? 32.g5 Nh5+= 33.g6?? fg6–+ (34.Qc7 gf5–+) 0–1. rustic – Korchnov, Live Game Caissa's Web, 2005.

7.a4 0-0 8.d4 e4 9.Nfd2 d5 10.Be2 Ne8 (10...Be6 11.c5=) 11.0-0 f5 12.Nc3 Nf6 13.Qb3 Be6 14.Rfc1 g5 (14...Nbd7 15.Ba3+=) 15.Ba3 (15.bc6 Nc6 16.cd5 Bd5 17.Nd5 Nd5+/-) 15...f4 (15...Nbd7 16.Be7 Qe7 17.bc6 bc6 18.Qb7+=) 16.cd5 (16.bc6 bc6 17.cd5 cd5 18.Nde4 Ne4 19.Ne4 fe3 20.fe3 Ba3 21.Ra3 Nd7+/-) 16...cd5 (16...Bd5!? 17.Nd5 cd5+=) 17.Nce4! Ba3 (17...de4 18.Qe6 Double attack (18.Qe6 Pinning; 18.Qe6 Deflection; 18.Qe6 Decoy); 17...Ne4 18.Ne4 Combination) 18.Ra3 Ne4 19.Ne4 g4 (better 19...fe3!? 20.fe3 Nd7+/-) 20.ef4 Nd7 (20...Rf4 21.Nc5 Bc8 22.Qg3+-) 21.Ng5 Qf6 22.g3 (22.Qg3!? h5+-) 22...Rac8 23.Raa1 Kh8 (23...Nb6 24.Qd1 h5 25.f3+-) 24.Ne6 (24.Rc8 Rc8 25.Re1 h6 26.Ne6 Qe6+-) 24...Qe6 25.Qe3 Qf6? (25...Qe3 26.fe3 Nf6+-) 26.Rc8 Rc8 27.Bg4 (27.Bg4 Qg7 28.Qe6+-) 1-0. jhonores (2215) - exosomes (2210), Rated Blitz game, lichess.org, 2020.

7.Nc3 0-0 8.Bd3 Bg4 (8...Nbd7 9.0-0=) 9.Be2 (9.h3 Bh5+=) 9...Nbd7= 10.d3 (10.0-0 Bf5=) 10...d5 (10...a4 11.0-0=) 11.0-0 Nc5? (better 11...a4=) 12.Ne5+– Be2 13.Qe2 Bd6 (13...dc4 14.d4 Nd3 15.Nc4 Nb2 16.Qb2+–) 14.f4 (14.d4 Nce4 15.Ne4 Ne4+–) 14...dc4 15.Nc4 Re8 (15...Be7 16.Rad1 Rc8+–) 16.Nd6 (16.bc6!? bc6 17.Nd6 Qd6+–) 16...Qd6+– 17.Rad1 (17.Ba3 cb5 (17...Qd3? 18.Bc5 Qe2 19.Ne2+–) 18.Nb5 Qb6+– (18...Qd3? 19.Qd3 Nd3 20.Nc7+–)) 17...Qe6 (17...Rac8 18.Rf3+–) 18.Rf3 Rad8 19.Ba3 (19.Rg3 g6+–) 19...Ncd7 (19...Nd5 20.Nd5 (20.Bc5? Nc3 21.Qc2 Nd1–+) 20...Qd5 21.bc6 bc6 22.Bc5 Qc5 23.Rg3+–) 20.f5 Qe5 21.d4 Qc7 22.Rc1 Ng4 (22...c5 23.Na4+–) 23.Rg3+– Re3?? (better 23...h5 24.Rg4 hg4+–) 24.Qg4 (24.Re3?? Qh2 25.Kf1 Qh1) 24...Rg3 25.Qg3 Qb6 (25...Qg3 26.hg3 Nf6 27.Bc5+–) 26.Rd1 cb5 (26...Re8+–) 27.Nd5 Qh6 (27...Qa6 28.Qc7 Ra8 29.Qd7+–) 28.Qc7 (28.Qc7 Rf8 29.Qd7+–) 1–0. DEFFM – MosesG, freechess.org, 2019.

7.d4 cb5 8.de5+= de5 9.Qd8 Bd8 10.Ne5 bc4 11.Bc4 0-0 12.0-0 Be6 13.Bd3 (13.Rc1 Nfd7+=) 13...Na6 14.Nd2 Nb4 15.Bb1 (15.Bc4 Rc8=) 15...Bc7 (15...Rc8 16.Ba3=+) 16.Ndf3 (16.Nef3 Rfd8=) 16...Rfd8 17.Ng5 (17.a3 Nbd5=) 17...Rd2 18.a3?? (better 18.Ne6 fe6 19.Bd4 Be5 20.Be5=) 18...Rb2–+ 19.Bh7 (19.Nef3 Nbd5 20.Ra2 Ra2 21.Ba2–+) 19…Nh7 (19...Nh7 20.Ne6 Be5 21.ab4 fe6 22.ba5 Nf6–+) 0–1. sirgeshdb – dosX (1875), lichess.org, 2020.

7.Be2 0-0 8.0-0 e4 9.Nd4 c5 10.Nb3 a4 11.Nc1 Bf5 12.a3 Nbd7 13.Nc3 Ne5 (13...Nb6 14.f3=) 14.Na4+= Qa5 (14...Nfd7 15.Qc2+=) 15.Nc3 Rfd8 16.a4 (16.f3 ef3 17.Bf3 Nc4 18.Bb7 Nb2+=) 16...Rac8 (16...Be6 17.Qb3 Qb4 18.Qb4 cb4 19.Nd5 Nd5 20.cd5 Bd5 21.d3=) 17.d3 (better is 17.Nb3 Qc7 18.a5+/-) 17...ed3+= 18.Nd3 (18.Bd3!? Bd3 19.Nd3 Nc4 20.Rc1+=) 18...Nc4–/+ 19.Bf3?? (19.Rc1!?–/+) 19...Bd3 (better is 19...Nb2 20.Nb2 Qc3–+) 20.Qd3 Nb2 21.Qc2 Nc4 22.Bb7 Rc7 23.Bc6 Ne5 24.Nd5? Nd5 25.Bd5 Bf6 26.Rad1 Nd7 27.f4 Nb6 28.Bc6 d5 29.e4 Bd4 30.Kh1 de4 31.Qe4 Qa4 32.Rde1 Rcc8 33.Bb7 Rb8 34.Bc6 g6 0–1. ourang – haha1haha, kurnik, 2013.

7.Be2 Bd7 8.a4 c5 9.0-0 b6 10.d3 0-0 11.Nbd2 Re8 12.Qc2 Bf5 13.Nh4 Be6 14.Nhf3 Bf5 15.h3 h6 16.Ne1 Qc7 17.Bf3 Nbd7? (better is 17...Ra7!?+=) 18.Ba8+– Ra8 19.e4 Bg6 20.g3 Rf8 21.Ng2 Nh5 22.Nf3 f5 23.ef5 Bf5+/- 24.Nd2 Bg6 25.Rae1+/- Kh7 26.Ne4 Ndf6 27.Nf6 Nf6 28.Ne3 Nh5 29.Nd5 Qd8 30.Ne7 Qe7 31.Qe2 Qf6 32.Bc1 Qf3 33.Qf3 Rf3 34.Re3 Rf6 35.Rfe1 Bf7 36.Kg2 Bg6 37.Rf3 Re6? 38.g4+– Nf6 Black prepares the advance e4 39.Kg3 e4 40.de4 Ne4 41.Kg2 1–0. ejdrzej (1685) – biged, kurnik, 2012.

7.Be2 Nbd7 8.a4 Be7 9.Nc3 0-0 10.0-0 Nc5 (10...d5 11.bc6 bc6 12.d4=) 11.d4+= Ncd7 12.Qc2 Qc7 13.Rfd1 Rad8 14.Rac1 ed4 15.Nd4 Be2 16.Nce2 Qb6 (16...Rfe8!?+=) 17.Nf5+/- Rfe8 18.Ne7 Re7 19.Rd6 Qc7 20.c5 (20.Rcd1 Ne4 21.R6d4 Rde8+/-) 20...cb5 (20...Ne4 21.Rd4 Rde8 22.b6+-) 21.ab5+- Rc8 22.Bf6 Nf6 23.b6 Qd6 (23...Qb8 24.Qa4+-) 24.cd6 Rc2 25.de7 (25.Rc2 Re8+-) 25...Rc1+/- 26.Nc1 Ne8 27.Kf1 f6 28.Ke2 Kf7 29.Kd3 Ke7 (29...a4 30.Kc4 Nd6 31.Kb4 Ke7 32.Ka4=) 30.Kc4 (30.Nb3!?+/-) 30...Kd6 (30...Nd6 31.Kb3=) 31.Kb5 a4 32.Na2 Kd5? (better 32...a3!?=) 33.Nb4 (33.Nc3 Ke5 34.Na4 Nd6 35.Kb4 Kd5+/-) 33...Ke5 34.Ka4 Nd6 35.f3 Nf5 (35...Nc4 36.Kb5 Ne3 37.Nd3 Kd5 38.Nc5 Ng2 39.Nb7+-) 36.e4+/- Ne3 (36...Nd6 37.Nc2+/-) 37.g3 (37.Kb5 Kd6+/-) 37...Nf1 (37...Kd4 38.Kb5 Nc4 39.Nc2 Kc3 40.h4+=) 38.Nc6! Kd6 (38...bc6 39.b7 Passed pawn) 39.Nd8 Nh2 (better 39...Kd7!? 40.Nb7 Kc6 41.Nd8 Kb6+/-) 40.Kb5+- (40.Nb7?! Kc6 41.Nd8 Kb6=) 40...Nf3 41.Nb7 Kd7 42.Ka6 Kc8 43.Ka7 Nd4 44.Nd6 Kd7 45.b7?? (better 45.Nf5 Nc6 46.Ka8+-) 45...Nc6-+ 46.Kb6 Kd6 47.g4 g6 (47...h6 48.Kb5 Kc7 49.Ka6-+) 48.Kb5?? (better 48.g5 Nb8 49.gf6 Nd7 50.Kb5-+) 48...h5 49.gh5 (49.g5 fg5 50.Kb6-+) 49...gh5 50.Kc4 h4 51.Kd3 Ke5 (better 51...h3-+) 52.Ke3 f5 (better 52...Nb8 53.Kf3-+) 53.ef5 Kf5 54.Kf3 Kg5 55.Kg2 Kg4 56.Kh2 Kf3?? (better 56...Kh5-+) 57.Kh3=. upep (1990) - Lion2222 (1870), Rated Blitz game, lichess.org, 2013.

7.Be2 Nbd7 8.Nc3 Be7 9.Qc2 Nc5 (9...Rc8 10.bc6 Rc6 11.0-0=) 10.Ba3 (10.d4 ed4 11.Nd4 Be2 12.Qe2 Qc7+=) 10...Qb6 (10...Ne6 11.Rb1=) 11.Rb1 Qc7 12.h3 Be6 13.d4 Ncd7 14.Ng5 ed4 15.ed4 0-0 16.0-0 Nb6 17.bc6 bc6 18.Ne6 fe6 19.Rfe1 Nfd7? (better 19...Nbd7!?+=) 20.Bd3+- Nf6 21.Re6 Rae8 22.Ne4 Nbd7 (22...Ne4 23.Be4 Kh8 24.Bh7+-) 23.Nd6 Bd6 24.Bd6 (worse 24.Rd6 Rf7+-) 24...Qa7 (24...Qd8 25.Qe2 (25.Bf8?! Re6 26.Ba3 Re8+-) 25...Rf7 26.Re1 Re6 27.Qe6+-) 25.Bf5 (25.Bf8?! Re6 26.d5 cd5 27.cd5 Nd5+-) 25...Rf7 26.Bh7! Nh7 (26...Kh8 27.Bf5 g6+-) 27.Re8 Nhf8 28.c5 Rf4 (28...Nf6 29.Rc8 N6d7+-) 29.Bf4 1-0. marekt (2205) - josquin (2010), gameknot.com, 2015.

7.Be2 Nbd7 8.d4 Qc7 (8...e4 9.Nfd2 Be2 10.Qe2 cb5 11.cb5=) 9.Nc3 Be7 10.Rc1 0-0 11.0-0 Rfe8 12.Qc2 Bf8 13.Ne4 Ne4 ½–½. Stoliar,EJ – Salm,Maxwell Charles, AUS–ch8 corr, 1966.

7.Be2 e4 8.Nd4 Bd7 (8...Be2 9.Qe2 d5 10.0-0=) 9.0-0 c5 10.Nc2 Be7 11.d3 Bf5 12.Nc3 0-0 13.de4 Ne4 14.Ne4 Be4 15.Bf3 Bc2 (15...Bf3 16.Qf3 (worse is 16.gf3 Bf6 17.Rb1 Bb2 18.Rb2 Qf6+=) 16...Qc8 17.Rad1+/-) 16.Qc2+– Qc7 17.Rad1 Ra7 18.Be4 h6 19.f4 (19.Bc3 a4+–) 19...b6 20.f5 (20.Rd5 Nd7+/-) 20...Nd7 21.f6 (better is 21.Bc6!?+/-) 21...Bf6= 22.Bf6 Nf6 23.Bc6 Qe7 24.Qf2 (24.e4 Qe5 25.Qd3 Re7+=) 24...Rd8 (24...Ng4 25.Qf4 Qe3 26.Kh1 Qf4 27.Rf4–/+) 25.Qf3 Qe6 26.h3? (better is 26.Qg3!?+=) 26...Re7 27.e4 Qc4 (27...Ne4?! 28.Rde1 d5 29.Bd5 Rd5 30.cd5 Qd5 31.Re3+=) 28.Bd5 (better is 28.a3–+) 28...Nd5 29.ed5 Qa2 30.Rf2 Qc4 31.Rdf1 f6 32.Qf5 Qb5 33.Rb1 Qe8 34.Rb6 Re1 35.Kh2 Qe5 36.Qe5 Re5 37.Rd2 Rd5 38.Rd5+– c4 39.Rbd6 (39.Rbd6 Rd6 40.Rd6+–; worse is 39.Rdd6 Re8 40.Rd7 Rc8+–) 1–0. druhynejhorsi (1735) – whiteblack (1685), kurnik, 2012.

7.Be2 Be7 8.0-0 0-0 9.h3 Bh5 10.d4 ed4 11.Nd4 Bg6 12.Nd2 c5 13.N4f3 Nbd7 14.Nh4 d5 15.Ng6 hg6 16.Qc2 Nb6 17.Rad1 Qc7 18.Bf3 dc4 19.Nc4 Nc4 20.Qc4 Rfd8 21.a4 Rac8 22.g3 b6 23.Rd8 Rd8 24.Rd1 Rd1 25.Bd1 Qd6? (better is 25...Bd6+/-) 26.Bb3+– Qd2?? (26...Qe6 27.Qe6 fe6 28.Be6 Kf8+–) 27.Qf7 Kh7 (27...Kh8 28.Bf6 Qe1 29.Kg2 Qf2 30.Kf2 gf6 31.Qg8) 28.Be5 (28.Bf6 Qc1 29.Kg2 Qh1 30.Kh1 Bf6 31.Qg8 Kh6 32.Qh8 Kg5 33.Qh4 Kf5 34.Qf4) 28...Qd8+– 29.Bc2 c4 30.Qg6 (30.Bg6!? Kh8+–) 30...Kg8 31.Qf5 Kf7 32.g4 Qd7 33.Qg6 Kg8 34.Bf5 Qe8? 35.Be6 Kh8 36.Qe8 Ne8 37.Bc4 Bd6 38.Bd6 Nd6 39.Bd3 Kg8 40.f4 Kf7 41.Kf2 g6 42.Kf3 Nb7 43.Ke4 Nc5 44.Kd4 Nb3 45.Kc4 Nd2 (45...Nd2 46.Kd5 Nf3+–). barborski – wk67 (1805), kurnik, 2012.

7.Be2 Be7 8.Nc3 0-0 9.h3 Bh5 10.g4 Bg6 11.Nh4 Ne4?? (better is 11...d5=) 12.Ng6+– Nc3 13.Ne7 (13.dc3?! fg6 14.Ba3 Qd7=) 13...Qe7 14.Bc3 Qh4 15.Bf3 f5 16.bc6 bc6 17.Rb1 e4 18.Rb7 Rf7 19.Rf7 Kf7 20.Qb1 Qe7 21.Bg2 g6 22.gf5 gf5 23.0-0 a4 24.f3 d5 25.fe4 (25.fe4 d4 26.Rf5 Kg8 27.Bb4+–) 1–0. forsetinn (1875) – jimmiels (1695), gameknot.com, 2013.

6.a4 b6 7.Nc3 Bb7 8.Nf3 e4 9.Ng5 (9.Nd4 Qe7=) 9...h6 10.Nh3 Be7 11.Nf4 0-0 12.Nfd5 Nd5 13.Nd5 Bd5 14.cd5 Bf6 15.Bc3 (15.d4 ed3 16.Bf6 Qf6 17.Bd3 Qc3 18.Ke2 Qe5=) 15...Bc3 16.dc3 Nf6 (16...Qg5 17.Qd4=+) 17.c4 (17.Qd4 Qd7=) 17...Nd7 18.Qc2 f5 19.Be2 Re8 20.Bh5 Re7 (20...Re5 21.0-0=) 21.Bg6 (21.Rd1 Re5 22.0-0 Qg5=) 21...Qf8 22.0-0 Qf6 23.Bh5 Rd8 (23...Rf8 24.Be2=+) 24.Rae1 (24.Qd2 Nc5 25.Qd4 Rf8=+) 24...Nc5=+ 25.f3? (25.g3!?=+) 25...Nd3 (25...Qg5 26.fe4 Qh5 27.ef5–+) 26.Re2–/+ g6 (26...Nb4!? 27.Qb1 Qg5 28.g4–+) 27.fe4 gh5?? (27...Nb4 28.Qb3 gh5 29.ef5 Rde8–/+) 28.Rf5?? (28.Qd3 fe4 29.Qd2 Qg7+–) 28...Nb4?? (28...Qa1 29.Rf1 Qa3 30.Rd1–+) 29.Qb1?? (better 29.Rf6 Nc2 30.Rc2 Re4 31.Kf2+–) 29...Qc3–+ 30.Ref2 Qe3 31.e5 Nd3?? (31...Re5 32.Re5 Qe5 (32...de5?? 33.Qg6 Kh8 34.Qf6 Kh7 35.Qe7 Kg8 36.Qd8 Kg7 37.Qc7 Kh8 38.Qd8 Kh7 39.Qe7 Kg8 40.d6+–) 33.Qg6 Kh8 34.Qh6 Kg8 35.Qg6 Kh8 36.Qh6 Kg8 37.Qg6 Kh8 38.Qh6=) 32.Kh1?? (better 32.R5f3 Qf2 33.Rf2 Nf2 34.Kf2 Rf8 35.Kg1 Re5 36.Qg6 Kh8 37.Qh6 Kg8 38.Qg6 Kh8 39.h3+=) 32...Nf2–+ 33.Kg1 (33.Rf2 Qf2 34.Qg1 Qe2–+ (34...de5?! 35.Qf2 Rf8 36.Qg3 Rg7 37.Qe1=)) 33...Ng4 (33...Nd1 34.Kf1 Re5 35.g3 Qd2 36.Rg5 Rg5 37.Qd1 Rf5 38.Qf3 Rf3 39.Kg1 Qe1 40.Kg2 Qf1) 34.Kh1 Re5 (34...Rf8 35.Rf8 Kf8 36.h3 Nf2 37.Kg1 Nh3 38.Kh2 Qf4 39.Kh1 Re5 40.Qa1 Qf2 41.Qd4 Qd4 42.Kh2 Qf4 43.g3 Re2 44.Kh3 Qg4) 35.Rh5 (35.Rf3 Qd2 36.h3 Re1 37.Rf1 Rb1 38.Rb1 Re8 39.hg4 Qf2 40.Rf1 Qf1 41.Kh2 Qf4 42.g3 Re2 43.Kh3 Qg4) 35…Qe1 (35...Qe1 36.Qe1 Re1) 0–1. AhmedSultanov – KenHolm, lichess.org, 2019.

6.a4 b6 7.Nf3= e4 8.Nd4 c5 (better 8...Bb7=) 9.bc6+– Ne5 (9...Nc5+–) 10.Be2 (10.Nc3!? Be7+–) 10...Qc7 (10...Ba6 11.Qc2 d5 12.cd5+–) 11.0-0 Nc6 12.Nc6 Qc6 13.Qc2 (13.f3 Bb7+–) 13...Bd7 (better 13...Be7!?+=) 14.f3+– Bf5 15.Nc3 (15.Bf6 gf6 16.Nc3 ef3 17.Bf3 Qf3 18.e4+– (18.gf3? Bc2 19.Rfc1 Bg6–+; 18.Qf5?! Qf5 19.Rf5 Rc8+–)) 15...Qc8? (better 15...ef3 16.Qf5 fe2 17.Ne2 A) 17...Qc4 18.Bf6 gf6 19.Rf4 (19.Qf6?! Rg8+–) 19...Qe2 20.Qe4 Kd7 21.Qa8+–; B) 17...Be7+–) 16.Nd5?? (better 16.Ne4!? Ne4 17.fe4+–) 16...ef3?? (better 16...Nd5 17.fe4 Nb4–/+) 17.Nf6+– gf6 18.Bd3 (better 18.e4!?+–) 18...Bd3+= 19.Qd3 fg2 20.Kg2 (20.Rf6 Qb7+=) 20...Qg4 (better 20...Rg8!? 21.Kf2 Qc6=) 21.Kh1+– Rg8 Threatening mate: Qg2 22.Qd5 0-0-0?? (better 22...Rc8 23.Rf4 Qg5 24.Qe4 Kd7 25.Rf6 Qh5+–) 23.Rf6 (better 23.Qc6 Kb8 24.Qb6 Kc8 25.Qc6 Kb8 26.Bf6 Qg2 27.Qg2 Rg2 28.Bd8+–) 23...Bg7 (23...Re8 24.Qc6 Kd8 25.Qb6 Kc8 26.Qc6 Kd8+–) 24.Rf7 (24.Qc6 Kb8 25.Qb6 Kc8 26.Qc6 Kb8 27.Bc3 Qe4 28.Qe4 Bf8 29.Rb1 Kc8 30.Qc6) 24...Qg2 (24...Rd7 25.Rf4 Bb2 26.Qc6 Kd8 27.Rg4 Rg4 28.Qb6 Ke7 29.Qb2 Rg6+–) 25.Qg2 Bb2 (25...d5 26.Qh3 Kb8 27.Qg3 Rd6 28.Qd6 Ka8 29.Qd5 Kb8 30.Qb7) 26.Qb7 1–0. RichardSommer (2170) – khalidG (2155), lichess.org, 2020.

6.a4 c6 7.Nf3 g6 (7...cb5 8.ab5 e4 9.Nd4=) 8.Be2 Bg7 9.0-0 0-0 10.Nc3 Re8 11.h3 Nb6 12.d4 e4 13.Nd2 d5 (13...c5 14.dc5 dc5 15.Qc2+=) 14.Qb3 (14.c5 Nbd7+=) 14...Be6 (14...dc4 15.Nc4 Nc4 16.Bc4=) 15.cd5 (15.c5 Nbd7+=) 15...cd5= 16.Rfc1 Nfd7 17.Ba3 (17.Nd1!?=) 17...Qg5=+ 18.Kh1 (18.Bd6 Bh3 19.Bg3 Be6=+) 18...f5 (18...Bd4 19.ed4 Qd2 20.Rd1–/+) 19.Nf1 Rac8 (19...f4 20.Bd6 f3 21.gf3 Bh3 22.Ng3=) 20.Rc2 (20.Bd6 Qf6=) 20...f4=+ 21.ef4? (better 21.Rac1!?=+) 21...Qf4–/+ 22.f3 (better 22.Rd1 Qf2 23.Bg4–+) 22...Bd4–+ 23.Rac1 Nf6 24.g3? (24.Nd1–+) 24...Qh6 25.h4 ef3 (25...Be5 26.fe4 Bg3 27.h5 de4 28.Nd5 Nh5 29.Bh5 Qh5 30.Kg1–+) 26.Bf3 g5 (26...Bc3!? 27.Rc3 d4 28.Qe6 Re6 29.Rc8 Nc8 30.Rc8 Re8 31.Bd5 Kg7 32.Rc7 Kh8 33.Bb7–+) 27.Ne2 gh4?? (better 27...Rc2 28.Rc2 Be5–+) 28.Nd4+= hg3 29.Kg2 (better 29.Kg1 Qh4 30.Bb2+–) 29...Bh3=+ 30.Kg1 g2?? (better 30...Bf1 31.Kf1 Rc2 32.Rc2 Ng4=+) 31.Bg2+– Ne4?? (better 31...Rc2 32.Rc2 Bg4+–) 32.Qh3 Qf6 (32...Qh3 33.Bh3 Rc2 34.Rc2 Nc4+–) 33.Rc8 Qf2 (33...Qd4 34.Ne3 Nc8 35.Rc8 Rc8 36.Qc8 Kg7 37.Qf8 Kg6 38.Qg8 Qg7 39.Qe8 Kg5 40.Be7 Nf6 41.Nd5 Kf5 42.Nf6 Qg5 43.Qc8 Kg6 44.Qe6 Qc1 45.Bf1 Qg5 46.Ng4 Kh5 47.Bg5 Kg5 48.Qf6 Kg4 49.Kg2 h5 50.Be2) 34.Kh1 Rc8 35.Rc8 Nc8 36.Qc8 Kg7 37.Qg4 (better 37.Bf8! Qf8 38.Ne6 Kf7 39.Nf8 b6+–) 37...Kh8 38.Ne6 (38.Ne6 Qf1 39.Kh2+–; better 38.Ne3! Qg3 39.Qc8 Qg8 40.Qb7 Nf6+–) 1–0. RichardSommer (2150) – Darsh96 (2035), lichess.org, 2020.

6.a4 d5 7.Nf3 e4 8.Nd4 Ne5 9.cd5 Bb4 (9...Nd5 10.Nc6 Nc6 11.bc6=) 10.Be2 (10.Qc2 0-0+=) 10...Nd3 11.Bd3 ed3 12.Qb3 (12.Nc3 Bc3 13.Bc3 Qd5=) 12...Qd5=+ 13.Qd5 Nd5 14.Nc3 Nb6 15.0-0 (15.Ne4 Nc4 16.Bc3 f5 17.Bb4 fe4=) 15...Bd7 16.Rfd1 0-0 17.Nf3 (17.Rdc1 Rfc8 18.Ne4 c6=+) 17...Nc4 18.Rab1 c6 19.Ba1 Rac8 (19...Bc3 20.dc3 cb5 21.Nd4–+) 20.Nd4 (20.Ne1 Bc3 21.Bc3 cb5 22.ab5 Rfd8–/+) 20...cb5 21.Ncb5 (21.ab5!? Bg4 22.f3–/+) 21...Nd2 (21...Bd2?! 22.Rb3=+) 22.Rb2 Ne4 23.f3 Nc5 24.Rbb1 Na4 25.Rd3 Rfe8 26.e4 f6 27.Bb2 (27.Kf2 Re5 28.Na7 Rc7–+) 27...Re5 (27...Red8 28.Rb3 Bb5 29.Nb5 Nb2 30.R1b2–+) 28.Na3 Nb2 29.Rb2 Rc1 (29...Rc3 30.Rb3 Rc1 31.Kf2–+) 30.Kf2 b5 31.Ndc2 Bc5 32.Ke2 Bc6 33.Rc3? (33.Kd2 Rg1 34.Ne3 Rg5–+) 33...Rg1 (better 33...b4 34.Nb4 Rc3 (34...Bb4?! 35.Rc1 Ba3 36.Rb8 Re8 37.Rcb1–+; 34...ab4?! 35.Rc1 ba3 36.Rb8 Kf7 37.Kd2–+) 35.Nc6 Rg5–+ (worse 35...Ba3 36.Rb8 Kf7 37.Ne5 fe5 38.Rb5–+)) 34.f4?? (34.Nb5 Rg2 35.Kd3–+) 34...Re4 35.Kd3 (35.Kd2 Rg2 36.Kd3 Rf4 37.Nb5 Be4 38.Kc4–+) 35…Rd1 0–1. BeepBeepImAJeep (2645) – CoreChessPlayer (2395), lichess.org, 2017.

6.a4 Be7 7.Nf3 0-0 8.Be2 Nc5 9.0-0 e4 10.Nd4 Nd3 11.Bd3 ed3 12.Qb3 d5 13.Qd3 dc4 14.Qc4 Ne4 (14...Bd6 15.Ba3+–) 15.d3 Nd6 16.Qc2 Bf6 17.Nf3 Bg4 18.Bf6 Qf6 19.Nbd2 Rac8 20.h3 (20.e4 Qd8+–) 20...Bh5 (20...Bf3 21.Nf3 (21.gf3?! Rfe8=) 21...c6 22.bc6 Rc6 23.Qd2+–) 21.Rac1 (21.Nd4 Rfe8+–) 21...h6 (21...c6 22.b6+–) 22.Qc5 Bg6 23.d4 Rfe8 24.Rfe1 (24.Qc3 b6+–) 24...Ne4 (24...b6 25.Qc6+–) 25.Ne4 Be4 26.Ne5 (26.Nd2 Bf5+–) 26...Qg5 The mate threat is Qxg2 27.f3 b6 28.Qa3 (28.Nf7 Qg6 (worse 28...bc5 29.Ng5 Bg6 30.Ne4 cd4 31.ed4+–) 29.Nh6 Kh7+–) 28...Bd5 (28...Re5!? 29.de5 Bf3+–) 29.e4+– Be6 30.Ng4 (30.Qe3 Qh4+–) 30...h5 (30...Rcd8 31.Qc3+–) 31.Nf2 h4 (31...Bd7 32.d5+–) 32.d5 Bd7 33.d6 (33.Qe3!? Qe5+–) 33...cd6 34.Rc8 Rc8 35.Qd6 Be6 36.Qb6 Qd2 37.Qe3 Qb4 38.Ra1 Rc2 (38...Qb2 39.Rd1 Bb3 40.Rd4+–) 39.Nd3 Qc3 40.Re1 (40.Rd1!? Bb3 41.Qb6 f6 42.Qd8 Kh7+–) 40...Bc4 41.Nf4 Qb2 (better 41...Qb4+–) 42.e5?? (better 42.Rd1+–) 42...g5+= 43.Re2 (43.Ne2! Be2 44.Qg5 Kf8 45.Qd8 Kg7 46.f4+= (46.Qa5 Qd4 47.Kh2 Bf3 48.Qd2 Qd2 49.Rg1 Qg5 50.a5 Rg2 51.Kh1 Rg1 52.Kh2 Qg3)) 43...gf4 (43...Qa1!? 44.Re1 gf4–/+) 44.Rc2= Qc2 Threatening mate... how? (44...fe3?? 45.Rb2 Bd5 46.b6+–) 45.Qb6 Qd1 46.Kh2 Bf1 (46...Qa4 47.Qd8 Kg7 48.Qf6 Kf8 49.b6=) 47.Qb8 (47.Qa5 Bg2 48.Kg2 Qe2 49.Kg1 Qe3 50.Kf1 Qf3 51.Ke1 Qe3 52.Kd1 f3 53.Qd8 Kg7 54.Qf6 Kg8=) 47...Kh7 (47...Kg7!? 48.Qc8 Qd2 49.Qg4 Kf8=) 48.e6?? (better 48.Qc7 Qb3 49.Qc1 (49.Qa5?? Qc2 50.Qd2 Qd2 51.e6 Qg2) 49...Bg2 50.Kg2 Qa2 51.Kg1 Qa4 52.Qb2 Qd1 53.Kg2+=) 48…Qe2 (48...Qe2 49.Qg8 Kg8 50.ef7 Kf7 51.b6 Qg2; 48...Qa4?? 49.ef7 Qb4 50.b6+–; 48...fe6?! 49.Qf4 Qe1 50.Qg5=) 0–1. Markzela (1690) – pbara (1815), lichess.org, 2020.

6.a4 g6 7.Nc3 Bg7 8.Nf3 0-0 9.Be2 Nc5 10.d4 ed4 11.Nd4 Nce4 12.Ne4 Ne4 13.0-0 Re8 14.Qc2 Nc5 15.Rad1 Ne6 (15...Qf6 16.Ba1=) 16.Qb1 (16.Ne6!? Be6 17.Bg7 Kg7 18.Bf3+–) 16...Nd4 (16...Nc5 17.Nb3 Bb2 18.Qb2 Na4 19.Qa1=) 17.Bd4+= Bd4 18.Rd4 Qf6 19.Rfd1 Re5 (19...b6 20.Rf4 Bf5 21.Bd3+–) 20.Bf3 (20.b6 Bf5 21.Qb2 Rc5+–) 20...Rc5 21.Qd3 Bf5 22.Qe2 (22.Qd2 Ra7+–) 22...Rb8 23.Rd5 b6 24.Rc5 bc5 (24...dc5 25.Bd5+=) 25.Bd5 (better 25.Qd2!?+–) 25...Be6 26.Qf3 (26.Qd2!? Bd5 27.Qd5+–) 26...Qf3= 27.gf3 Kg7 28.f4 Kf6 29.Kg2 Bd5 (29...Re8 30.Kf3=) 30.Rd5+= Re8 31.Kf3 Ke6 32.h4 (32.e4 f6+=) 32...f5= 33.Rd1 Kf6 34.Rh1 (34.b6 Ke7 35.Rb1 Kd7 36.bc7 Kc7=) 34...Re4 35.Rc1 h6 36.Ke2 g5 (36...Re7 37.Rg1=) 37.hg5 hg5 38.f3 Re7 (38...Re8 39.fg5 Kg5 40.Rh1+=) 39.fg5+– Kg5 40.Rg1 Kf6 41.Rh1 (41.Rg8!?+–) 41...f4= 42.e4 Ke5 (42...Rg7!?=) 43.Kd3+= Rg7 44.Rh5 Ke6 45.Rf5 Rg1 46.Rf4 The passed pawn on f3 will quickly become a dangerous weapon 46...Ra1 47.Rh4 (47.Rf8 Ra3 48.Ke2 Ra4 49.Re8 Kd7=) 47...Ra3= 48.Kc2 Ra4 49.Kb3 Ke5?? (better 49...Ra1=) 50.Ka4+– (50.Ka4 Kd4 51.Rh7 Kc4 52.Rc7+–) 1–0. BeepBeepImAJeep (2610) – skulas (2335), lichess.org, 2016.

6.a4 g6 7.Nf3 Bg7 8.Be2 0-0 9.d4 Re8 10.0-0 e4 11.Nfd2 c6 12.Nc3 d5 13.Qb3 Nf8 14.bc6 bc6 15.cd5 cd5 16.Rac1 h5 (16...Bg4 17.Bb5 Rb8 18.Ba3+=) 17.Nb5 Rb8 18.Qc3 Bg4 19.Rfe1 (19.Bg4 hg4 20.Nb3 Rc8 21.Qa5 Qa5 22.Na5 Rc1 23.Rc1 Ra8+–) 19...Be2 (19...Rc8!? 20.Qb3 Rc1 21.Bc1 Be2 22.Re2 h4=) 20.Re2+= Ng4 (20...h4 21.Nb3 h3 22.f4+=) 21.Nf1 (21.Nb3 Rb5 22.ab5 Qb8+=) 21...Qh4 (21...Rc8 22.Qe1 Rc1 23.Bc1+=) 22.Rec2 Nh7 (22...Rec8 23.Qa5 Ra8 24.Qd2 Rc2 25.Rc2+– (worse 25.Qc2 Ra4 26.Nd6 Ra2=)) 23.h3 Ng5? (better 23...Ngf6+–) 24.hg4+– hg4 (24...Qg4 25.Nh2 (25.Qa5 Nf3 26.Kh1 Qh4 27.Nh2 Qh2) 25...Nf3 26.Kh1 Nh2 27.Kh2+–) 25.Ng3 (worse 25.Qa5 Red8+–) 25...Nf3 (25...Ne6 26.Ba3+–) 26.gf3 gf3 Do you see the mate threat? 27.Kf1 (27.Qa5?? Qh3 28.Ne4 Qg2) 27...Qh2 (27...Bf8 28.Ba3 Ba3 29.Qa3+–) 28.Ke1 Qg1 29.Kd2 (better 29.Nf1+–) 29...Qf2=+ 30.Kd1 Qg3 31.Qe1 Qg4 (31...Qe1!? 32.Ke1 Bh6=) 32.Qf2+= (32.Qa5?? f2 33.Kd2 Qg2–+) 32...Bf6 33.Kd2 Bh4 34.Qg1 (better 34.Qh2 Bg3 35.Qh1=) 34...Qf5?? (34...Qg1!? 35.Rg1 Kg7=+) 35.Rf1 (35.Nd6 Qe6 36.Ne8 Rb3+–) 35...f2 (35...Qh3!?=) 36.Qg2 Rec8 37.Bc3 Kg7 (37...Qf6!? 38.Qh2 Qd8+=) 38.Nd6+– Qe6 39.Nc8 Rc8 40.Rf2 (40.Rh1 Qc6 41.Rh4 Qa4 42.Qf2+–) 40...Bf2= 41.Qf2 Qa6 42.Qe2 Qd6? (42...Qe2 43.Ke2 Rc4 44.Kd2 Ra4 45.Rb2=) 43.Rc1 (better 43.Ba5 Rc2 44.Kc2+–) 43...Qa3 44.Rc2 (44.Qh2!? Qa2 45.Rc2+=) 44...Qa4 45.Qa6 Attacking the isolated pawn on a5 45...Rh8 46.Qe2 Qc6 47.Qf2 (better 47.Ba5 Qd6 48.Qf1+=) 47...Qb5 48.Qe2 Qc6 (48...Qe2 49.Ke2 a4 50.Be1=+) 49.Rc1 (better 49.Ba5!? Qd6 50.Qf1+=) 49...Qb6 50.Rf1 (50.Kd1 Qb3 51.Kd2 Qb8–/+) 50...Qb3–/+ 51.Qf2?? (51.Ra1 Qb8 52.Qd1 Qg3–/+) 51...Qa2 (51...Rh2 52.Qh2 Qa2 53.Ke1 Qh2 54.Ba5 Qg3 55.Ke2–+) 52.Ke1?? (better 52.Kc1 Qf2 53.Rf2–/+) 52...Qb1–+ 53.Kd2 Threatening mate: Qf6 53...Qd3 54.Ke1 Qc3 55.Kd1 Qd3 (better 55...f5!? 56.Qc2 Qc2 57.Kc2 Rh2 58.Kb1–+) 56.Ke1 Qc3 (better 56...Qb1 57.Kd2 Qb4 58.Kd1–+) 57.Kd1 Qb3 (57...f5!? 58.Qc2 Qc2 59.Kc2 Rh2 60.Kb1–+) 58.Ke1 Qc3 (better 58...f5 59.Qf4 Qb8–+) ½–½. BeepBeepImAJeep (2600) – tenemeelnene (2340), lichess.org, 2017.

6.Nc3 b6 7.Nf3 Bb7 8.Be2 Be7 (8...g6 9.0-0=) 9.0-0 0-0 10.a3 (10.d4 Re8+=) 10...Re8 11.Qc2 h6 12.d4 e4 (12...Bf8 13.Rad1+=) 13.Nd2+– Bf8 14.f3 ef3 15.Bf3 Qc8 16.Rae1 Bf3 17.Rf3 Be7 18.e4 Nf8 19.Nd5 Nd5 20.cd5 Bf6 (20...Ng6 21.Ref1 Rf8 22.a4+–) 21.Nc4 White prepares the advance e5 21...Qd8 (21...Qd7 22.a4+–) 22.e5 de5 23.de5 (worse 23.Ne5 Qd5 24.a4 Be5 25.de5 Ne6–/+) 23...Be7 (23...Qd5 24.Rd1 Qc5 25.Bd4 Qb5 26.ef6+–) 24.Rd1 Bc5 25.Kh1 Ng6?? (25...Re7+–) 26.e6! Nh8 (26...fe6 27.Qg6 Deflection) 27.ef7 Nf7 28.Qg6 Ne5 29.Be5 Qe7 (29...Re7 30.Rg3 Qf8+–) 30.Rg3 Rad8 (30...Bd6 31.Qg7 (31.Bd6?? Qe1 32.Re1 Re1) 31...Qg7 32.Rg7 (32.Bg7?! Bg3 33.Bh6 Bf2=+) 32...Kh8 33.Bf6+–) 31.Qc6 g5 (31...Bd6 32.Rg7 Qg7 33.Bg7 Kg7 34.Nd6 cd6 35.Qb6 Rd7+–) 32.Qg6 Kf8 33.Rf3 (33.Rf3 Qf6 34.Rf6 Ke7 35.Rf7) 1–0. Pierre – Ceynova, internet, 2019.

6.Nc3 Nb6 7.a4 Be6=+ 8.Qb3 (8.d3 Be7=+) 8...d5 (8...Be7 9.Nf3=+) 9.cd5 Nfd5 10.Nd5 Bd5 (10...Nd5?! 11.Be5 f6 12.Bd4+=) 11.Qc2 Bd6 (11...e4 12.Qc3=+) 12.e4 Be6 13.Nf3 Nd7 (13...f6 14.Be2=) 14.Be2 (14.Rd1 Bg4=) 14...0-0 (14...Rc8 15.d4=) 15.0-0 Re8 (15...c5 16.Bc4=) 16.d4+= ed4 17.Rad1 Bg4 (17...Qe7 18.Nd4 Rad8 19.Bc3+=) 18.Rd4 Qe7 19.h3 (19.Rfd1 Nf6 20.h3 Bh5=) 19...Bh5 20.Re1 Bg6 21.Bd3 (21.Qc3 Nf6 22.e5 Be5 23.Ne5 Qe5=) 21…Ne5 unclear. Plock,Joerg - Van Rooijen,Peter, corr or01-004 E-mail, 2001.

6.Nc3 Nb6 7.d4 =.

6.Nc3 Nb6 7.Nf3 Be6 =.

6.Nc3 c6 7.a4 (7.d4 Be7=) 7...Qe7 (7...Be7 8.Nf3=) 8.Qc2 g6 (8...Nc5 9.Nf3=) 9.Nge2 (9.Nf3 Bg7=) 9...Bg7 10.Ng3 0-0 (10...Qe6 11.Be2=) 11.Be2 Re8 (11...cb5 12.Nb5 Nc5 13.0-0+=) 12.0-0 Nf8 (12...Nc5 13.Rae1=) 13.Bf3 (13.f4 e4+=) 13...Bg4= 14.Bg4 Ng4 15.h3 Nh6=. Grund,Karl - Haantola,Harri, corr ICCF, 1980.

6.Nc3 g6 7.a4 Bg7 8.Nf3 0-0 9.Be2 Ne8 10.0-0 Nc5 11.h3 Bf5 12.Nh2 Nd3 13.Bd3 (better is 13.Ba3!? e4 14.Bd3 ed3 15.Qf3=) 13...Bd3–/+ 14.Re1 Bc4 15.d3 Be6 16.f4 ef4 17.ef4 c6 18.Qc2 Nf6 19.Re2 Nd5 (19...Qb6 20.Rf2–+) 20.Rae1? (20.Nd5!? Bd5 21.Bg7 Kg7 22.Qb2 Qf6 23.Qf6 Kf6 24.Ng4 Kg7 25.Ne3+=) 20...Nb4 (better is 20...Nf4!? 21.Re4 Qg5 22.Kh1–+) 21.Qb1 Qb6 22.Kh1 Bf5 23.Ne4 d5 (better is 23...Be4!? 24.de4 cb5–/+) 24.Bg7+= Kg7 25.Qb2 f6 26.Ng5?? (26.Nf6 d4 27.Re7 Kf6 28.Qe2+–) 26...Nd3–+ (26...Bd3 27.Re7 Kg8 28.Ng4 Qc7 29.Rc7 Rf7 30.Nh6 Kg7 31.Rf7 Kh6 32.Rh7) 27.Re7 (27.Qc3 Ne1 28.Re1 Rfe8–+) 27...Kg8 28.Qc3 (28.Qd2 Nf2 29.Kg1 Nh3 30.Kh1 Nf2 31.Kg1 Ne4 32.Qe3 Qe3 33.Re3 fg5 34.fg5–+) 28...Nf2 29.Kg1 Nh3 30.Kh1 Qg1! 31.Rg1 Nf2 0–1. dtpwaldi (1610) – kingghidorah (1810), kurnik, 2011.

6.Nc3 g6 7.d4 Bg7 8.Nf3 0-0 9.Be2 c6 (9...e4 10.Nd2 Qe7 11.0-0=) 10.0-0+= e4 11.Nd2 Re8 12.bc6 (12.f3 ef3 13.Bf3 Bh6 14.bc6 Be3 15.Kh1 bc6 16.Bc6 Rb8+=) 12...bc6= 13.Ba3 Nf8 (13...c5 14.Rb1=) 14.Rb1 h5 (14...Qc7 15.f3 ef3 16.Rf3=) 15.Qa4 Qc7 16.c5 d5 17.Rb6 Re6 18.Rfb1 g5 (18...N8d7 19.R6b3+/-) 19.Bc1 Ng4 20.Nf1 f5 (20...Nd7 21.R6b3+/-) 21.Qb3 (21.h3 Nf6+/-) 21...Ra7 22.Nd5 (better is 22.h3!? Nf6 23.Nd2+/-) 22...cd5= 23.Qd5 Kh8 24.Bg4 (24.Ng3 h4 25.Bg4 hg3 26.Bf5 Rb6 27.cb6 Qc2 28.hg3 Rc7=) 24...hg4 25.Ng3 Re7?? (25...Rb6 26.cb6 Qb7+=) 26.Nf5+/- Be6 27.Qe4 Ba2 28.Qe7 (28.Ne7 Bb1 29.Rb1 Qe7 30.Qg4 a4+/-) 28...Qe7 29.Ne7 Bb1 30.Nc6 Rc7 31.Na5 Be4 32.Bd2 (32.Bb2 Bd5+-) 32...Nd7+/- 33.Rd6 Bf8 (33...Kg8 34.c6 Nf6 35.Bb4+/-) 34.Re6+- Bd5 35.Re8 Kg8 36.e4 Bf7 (36...Nf6 37.Rf8! (37.ed5?! Ne8 38.Nc6 Rd7+/-) 37...Kf8 38.ed5 Nd5 39.Bg5+-) 37.Rd8 Kg7 38.Bg5 Ra7 39.Bd2 Nf6 40.f3 Be7 41.Rb8 Nd7 42.Rb7 Rb7 43.Nb7 gf3 (43...Bf6 44.e5 Be5 45.de5 gf3 46.Bc3+-) 44.gf3 Kf6 (44...Bf6 45.e5 Ne5 46.de5 Be5 47.Kg2+-) 1-0. Lebel,Patrick (2270) - Curione,Francesco, Imperia op, 1989.

6.d4 ed4 7.ed4 d5 (7...Be7 8.Bd3=) 8.c5 (8.Qe2 Ne4 9.f3 Bb4 10.Nc3 f5+–) 8...c6 (8...Be7 9.Nc3=) 9.b6 (9.Nf3 Be7=) 9...Ne4 (9...Be7 10.Bd3=) 10.Bd3 Be7 11.Nf3 0-0 12.Qc2 (12.0-0 Re8=) 12...Re8 13.0-0 Bf8 (13...Ndf6 14.Re1+=) 14.Nc3 f5 (14...Ndf6 15.Rfe1+=) 15.Rfe1+/- Qf6 16.Ne2 (16.Re2 g6+/-) 16...Qh6 (16...g6 17.Bc3+=) 17.Ng3 (17.Bc1 Qf6+=) 17...Ndf6 (17...Qf6 18.a4+=) 18.Bc1+/- g5 (better is 18...Qg6+/-) 19.Bg5?? (better is 19.h4 Ng3 20.Re8 (20.fg3?! Re1 21.Ne1 Ne4=) 20...Ne8 21.Bg5+–) 19...Ng5+= 20.Re8 (better is 20.Ng5!? Qg5 21.Re8 Ne8 22.Nf5+=) 20...Nf3–+ (20...Ne8?! 21.Ng5 Qg5 22.Nf5+=) 21.gf3 Ne8 22.Bf5 Ng7 23.Bg4 Qf4 24.Ne2 Qg5 25.Kf1 Bg4 26.fg4 Qg4 27.Qd2 Nf5 28.Rd1 Bg7 29.Qd3 Re8 30.h3 Qe4 31.Qd2 Qf3 32.Re1 Ne3 (32...Ne3 33.Qe3 Re3–+; 32...Re2 33.Qf4 Rf2 34.Kg1 Qg2) 0–1. Rohde,Angela – Hausmann,Ilka, BL2 Mitte, 1993.

6.d4 ed4 7.Bd4 b6 (7...Be7 8.Nf3=) 8.Be2 Bb7 (8...Be7 9.Bf3 Ra7 10.Ne2=) 9.Bf3 Bf3 10.Nf3 g6 (10...Be7 11.0-0+=) 11.h4 (11.Nbd2 Bg7+=) 11...Bg7+= 12.h5 gh5 13.Nc3 0-0 (13...Rg8 14.Rh2+=) 14.Qc2 Re8 15.0-0-0 (15.Nd5 a4+/-) 15...Qe7 (15...Rc8!?+=) 16.Nd5+/- Nd5 17.cd5 Bd4 (17...Qe4 A) 18.Qc7?? Rec8 19.Qc6 Qd5–+ (19...Rc6?! 20.dc6 Ne5 21.Rh4 Nd3 22.Kd2–+); B) 18.Rh5 Qc2 19.Kc2 Bd4 20.Rd4+– (20.ed4?! Re2 21.Rd2 Rae8=)) 18.Rd4+– (18.ed4?! Qe2=) 18...Nf6 19.Qf5 Ne4 20.Nd2 (better is 20.Rh5!? f6 21.Rh4 Nf2 22.Nd2 Qe3 23.Rdg4 Ng4 24.Rg4 Qg5 25.Rg5 fg5 26.Qg5 Kh8 27.Qh4+–) 20...Qf6+/- 21.Qh5 Nf2? (21...Nc3!? 22.Kc2 Nb5 23.Qh7 Kf8+/-) 22.Rhh4 (22.Qh7 Kf8 23.Rhh4 Qg7+–) 22...Re3? (better is 22...Qg6 23.Qe2 Qg2+–) 23.Qh7 Kf8 24.Qh8 Ke7 25.Qf6 Kf6 26.Rhf4 Ke7 (26...Kg7 27.Rf2 Rae8 28.Nf3+–) 27.Rf2 Rh8 (27...Kf8 28.Nf3 Rae8 29.Ng5+–) 28.Re4 (28.Rc4 Rc8+–) 28...Re4 29.Ne4 1–0. Zschalich – Kowalczyk, BezM Leipzig (year?).

6.d4 e4 7.Nc3 Be7 8.Qc2 0-0 9.Ne4 Ne4 10.Qe4 Nf6 11.Qc2 b6 (11...d5!?+=) 12.Bd3+/- Be6 13.Nf3 Bg4 14.Ng5 h6 15.Ne4 Ne4 16.Be4 Rc8 17.0-0 Bf6 18.f3 Bd7 19.Rad1 1–0. katchum (2515) – lovecraft (2225), net–chess.com, 2013.

6.d4 Qe7 7.Be2 Qe6 8.Nf3 =.

6.d4 Qe7 7.Be2 g6 8.Nc3 Bg7 9.Nf3 0-0 10.0-0 Re8 11.Rc1 b6 (11...ed4 12.ed4 d5 13.c5+=) 12.de5 de5 13.Nd5 Nd5 14.cd5 Nc5 15.Nd2 Qg5 16.Re1 Bf5 17.e4 (17.Bf1 Bg4 18.f3 Bd7+=) 17...Bd7 (17...Ne4!? 18.Ne4 Be4=) 18.Qc2+/- f5 19.Nb3 Bf8 (19...Ne4 20.Qc7 Qd8 21.a4+=) 20.Nc5+/- ½-½. Woschkat,Karl_Heinz - Blankenberg,Bruno, DESC, 1999.

6.d4 Qe7 7.Nf3 a4 8.Be2 =.

6.d4 Qe7 7.Nf3 ed4 8.Nd4 (8.Bd4 Ne5+=) 8...Nc5 9.Nc3 (9.Be2 Bg4+=) 9...Qe5 (9...a4 10.Nd5 Qd8 11.a3+=) 10.Be2 (10.Nf3 Qh5+=) 10...Be7= 11.0-0 0-0 12.Qc2 (12.Nf3 Qf5=) 12...Re8 13.Rad1 Bd8 14.h3 (14.Qd2 Nfe4 15.Ne4 Ne4=) 14...Qg5 (14...Be7 15.Na4=) 15.Kh2 Qh6 (15...Be7 16.Bf3=) 16.Bf3 Bg4 17.Nf5 Qh5 18.Bg4 (18.Ng3 Qh6+=) 18...Ng4 19.Kg1 Nf6 (19...Nh6!? 20.Ng3 Qh4+=) 20.Nd5 Nce4 21.Bf6 Bf6 22.f3 Qf5 23.fe4 Qc8 24.Rf6 gf6 25.Nf6 Kg7 26.Rf1 (26.Ne8!? Qe8 27.Rd5+/-) 26...Re5+= 27.Qf2 Qf8 (27...Qe6 28.Ng4 Rg5 29.Qb2 Kf8 30.Qh8 Rg8 31.Qh7+=) 28.Qf4 (28.Nd7 Qe7 29.Ne5 de5 30.Qg3 Kh8+/-) 28...Rae8 (better is 28...Qe7+/-) 29.Rf3+- R8e6 (29...Kh8 30.a4 R5e6 31.Ne8 Qe8 32.Qf7 Qe7+-) 30.Rg3 Kh8 (30...Rg5 31.Qg5 Kh8 32.Qg8 Qg8 33.Rg8) 31.Qh6!! (31...Qh6 32.Rg8) 1-0. Hromada,Vaclav - Janak,J, corr, 1971.

6.d4 g6 7.Nf3 e4 8.Nfd2+= Bg7 9.Nc3 Qe7 10.Qc2 Can e4 get defended? 1–0. pierred – anony, internet, 2014.

6.Ne2 Nc5 7.d4 ed4 8.ed4 Ne6 9.a4 g6 10.Ng3 d5 11.c5 Bg7 12.Bd3 0-0 13.0-0 Nd7 14.Re1 Ndc5!–/+ 15.Bf1 Nd7 16.Ra2 c5 17.bc6 bc6–/+ 18.Ba3 Re8 19.Rae2 Ba6–+ 20.Qc2?? Be2 21.Re2 Nd4 (22.Re8 Qe8–+) 0–1. Kabelitz – Selig, corr, 1972.

6.Ne2 Nc5 7.d4 ed4 8.ed4 Ne6 9.d5 Nc5 =.

6.Ne2 Nc5 7.d4 ed4 8.ed4 Ne6 9.g3 d5 10.Bg2 dc4 (10...Bb4!? 11.Nd2 Ne4 12.Be4 de4+=) 11.0-0 =.

6.Nf3 Nc5 7.d4 Nce4 8.Be2 ed4 9.Bd4 Be7 +=.

6.Nf3 Nc5 7.Be2 e4 8.Nd4 =.

6.Nf3 Nc5 7.Be2 Bg4 8.d4+= ed4 9.Nd4 (9.ed4 Nce4+=) 9...Be2= 10.Qe2 Be7 (10...a4 11.0-0+=) 11.Nd2 (11.0-0 0-0+=) 11...0-0= 12.0-0 Qd7 13.a4 (13.Qf3 Nd3 14.Rab1 Ne5+=) 13...Ng4 (13...Rfe8 14.N4b3=) 14.N4b3+= Rfe8 (14...Nb3 15.Nb3 Qe6 16.Qf3+=) 15.Nc5 dc5 16.Rad1 Bd6 17.h3 Ne5 18.Ne4 Qe6 (18...Qe7 19.Nd6 cd6 20.Rd5+=) 19.Nd6 (19.Be5 Qe5 20.Nd6 cd6+/-) 19...cd6+= 20.Rd5 Ng6 21.Qd2 Qe4 (21...Ne7 22.Qc3 f6 23.Rd3=) 22.Rc1+/- Nh4 (22...Ne5 23.Be5 de5 24.Rc5+/-) 23.Rg5+- Nf5? (better is 23...Ng6 24.Qd6 Rad8 25.Qc5 Rd2+-) 24.g4 Nh4 25.Rg7 Kf8 26.Qd6 Re7 27.Qd5 Nf3 (27...Rae8 28.Qe4 Re4 29.Rh7 Nf3 30.Kg2+-) 28.Kf1 (28.Kg2 Ng5 29.Qe4 Ne4 (29...Re4?? 30.Rg5 b6 31.Bg7 Ke7 32.Be5+-) 30.Rh7 Ree8+-) 28...Rae8 29.Qe4 Re4 (29...Nd2 30.Ke1 Ne4 31.Rh7+-) 30.Rh7 R8e6 (30...Ke7 31.Ke2 Ne5 32.Be5 Re5 33.h4+-) 31.Rd1 (31.Rh8 Ke7 32.Rb8 b6 33.Rb7 Ke8+-) 31...Ke7 32.Rh5 (32.Rd5 Rg6 33.Ke2 Ng5+-) 32...Rc4 33.Rhd5 f6 34.Rd7 Kf8 (34...Ke8 35.Rb7 Ra4 36.Rd5+-) 35.Rb7 Ne5 (35...Re7 36.Rb6 Rc2 37.Rd8 Re8 38.Bf6 Rd8 39.Bd8 Nd2 40.Kg2+-) 36.g5! Ra4 (36...fg5 37.Rd8 Double attack) 37.gf6 Nf7 38.Rdd7 Ng5 39.Rg7 (39.f7 Nf7 40.Rf7 Kg8+-) 39...Ra2 (39...Rb4 40.f7 Nf7 41.Rgf7 Kg8 42.Bc3 Rb1 43.Ke2+-) 40.Rg5 Rb2 41.Rh5 Kg8 (41...Rf2 42.Kg1 Rf1 43.Kg2 Rf2 44.Kg3 Re7 45.fe7 Ke8 46.Rh8 Kf7 47.e8Q Kf6 48.Rf7 Kg5 49.Qg8) 42.Rg7 (42...Kf8 43.Rh8) 1-0. Soininen,Matti - Virtanen,Matti, corr Finland, 1977.

6.Nf3 c6 7.Nc3 cb5 8.Nb5 Ra6 (8...e4 9.Nfd4=) 9.Be2 Nc5 (9...Be7 10.d4+=) 10.d4+– ed4 11.ed4 Nce4 12.Qc2 White plans c5 12...Bf5 13.Bd3 d5 14.c5 b6 (14...Re6 15.0-0+–) 15.0-0 (better 15.Nc3!? Ra8 16.Qa4 Ke7 17.Ne4 de4 18.Ne5+–) 15...bc5+= 16.dc5 Bc5? (better 16...Rc6+=) 17.Bf6+– Rf6 18.Be4 de4? (18...Bf2 19.Rf2 Be4+–) 19.Qc5 ef3 (19...Qe7 20.Nc7 Kf8 21.Qa5 Rd6 22.Qf5 Qc7+–) 20.Rfd1 Bd7 (20...Qe7 21.Nc7 Qc7 22.Qc7 0-0+–) 21.Nc7 Qc7 22.Qc7 (22.Qc7 0-0 23.Rd7+–) 1–0. OnlyPolishOpening (1880) – samyyoussef20 (1840), lichess.org, 2020.

6.Nf3 Qe7 7.Nc3 (7.Be2 e4 8.Nd4 Nc5=) 7...c6 (7...Nb6 8.d3=) 8.Be2 g6 (8...e4 9.Nd4 c5 10.Nf5+=) 9.a4 (9.d4 Bg7+=) 9...Bg7 10.0-0 (10.d4 0-0+=) 10...0-0 11.d4 Re8 12.Ba3 (12.Rb1 Rb8+=) 12...e4 (12...c5 13.de5 Ne5 14.Ne5 de5 15.e4+=) 13.Nd2 c5 14.Qc2 Can e4 get defended? 14...b6 (14...Nb6 15.dc5 dc5 16.Rad1=) 15.d5 (15.Bb2 Ra7+=) 15...Nf8 16.h3 h5 (16...h6 17.Bb2+=) 17.Rae1 Bf5 18.Bb2 N8h7 19.Qd1 (19.Kh1 Nf8+=) 19...Ng5 20.f4 (20.Kh1 h4+=) 20...ef3= 21.Bf3 Nfe4 (21...Bd3 22.Rf2=) 22.Nde4 Ne4 23.Be4 Be4 (23...Bc3 24.Bf5 Bb2 25.Bd3+=) 24.Rf4 (24.Ne4 Bb2 25.Nd2 h4+=) 24...Bf5= 25.Rf5 gf5 26.Qh5 Qf6 27.Rf1 (27.Re2!?=) 27...Qg6-/+ (worse 27...Re3 28.Nd1 (28.Rf5? Qg6-+) 28...Qg6 29.Qg6 fg6 30.Bg7+=) 28.Qf5 Qf5 (better 28...Re3!? 29.Qg6 fg6-/+) 29.Rf5= Re3 30.Rg5 f6 31.Rf5 (31.Rg4 Rae8 32.Kf2 R8e7=+) 31...Kf7 (31...Rae8 32.Kh2=+) 32.Kf2= Rae8 33.h4? (better 33.Rf4=+) 33...Rd3-+ 34.Kf1 Ree3 35.Na2 (35.g4 Rc3 36.Bc3 Rc3-+) 35...Rd1 (better 35...Re4!? 36.Nc3 Rc4-+) 36.Kf2-/+ Rb3 (36...Rb3 37.Bc1 Rd4-+) 0-1. Schiffler,Leonhard - Schlieder,Rolf, corr, 1951.

7.d3 0-0 8.Be2 Nc5 (8...c6 9.Nf3=) 9.Nf3 c6 (9...a4 10.d4 ed4 11.ed4=) 10.0-0 (10.d4 ed4 11.Nd4 Bd7+=) 10...a4 (10...Bf5 11.d4 Ncd7 12.a3=) 11.a3 (11.Ba3 Qa5 12.Rb1 e4 (12...Qc3? 13.Bb4 Qb4 14.Rb4+-) 13.de4 Nfe4 (worse is 13...Qc3 14.Bb4 Nfe4 15.Bc3 Nc3 16.Qc2 Nb1 17.Rb1+/-; worse is 13...Nce4 14.Ne4 Ne4 15.Bb4+=) 14.Ne4 Ne4+=) 11...Nb3 (11...Bf5 12.Ra2=) 12.Ra2 cb5 13.cb5 (13.Nb5 Bf5=) 13...Nc5 (13...Qa5 14.d4 Be6 15.d5=) 14.d4+= ed4 15.Nd4 Nfe4 (15...Be6 16.Ra1+=) 16.Ne4 Ne4 17.Bd3 (17.Qc2 Nc5+/-) 17...Nc5+= 18.Bc2 Bf6 19.Qb1 (19.Ra1 Be5+=) 19...h6 (19...g6 20.Ra1+=) 20.Rc1= Qe7 (20...Be6 21.Ra1+=) 21.b6 (21.Nf5 Bf5 22.Bf5 Rfe8+=) 21...Re8 (21...Be5+=) 22.Ra1 (22.Nb5 Be6 23.Nc7 Ba2 24.Qa2 Be5+=) 22...Bg4 (22...Ra6 23.Bc3=) 23.h3 (23.Nb5 Red8+=) 23...Bd7 24.Bh7 (24.Nb5 Bb2 25.Qb2 Bb5 26.Qb5 Qe5+=) 24...Kh8= 25.Bc2 (better is 25.Bf5=) 25...Ne6?? (better is 25...Ra6 26.Bc3 Qd8=) 26.Nf5+- Qf8 27.Bf6 gf6 28.Qb2 Ng7 29.Nh6 (29.Qf6 Bf5 30.Bf5 Kg8+-) 29...Qe7 (29...Nh5 30.Ng4+-) 30.Qd4 Qe5 (30...Ra5 31.Qd6!! f5+- (31...Qd6?? 32.Nf7 Kg8 33.Nd6+-)) 31.Nf7 (31.Nf7 Kg8 32.Ne5 fe5 33.Qd6+-) 1-0. Bonetti,Shane - reptile, ICC, 2002.

7.d3 0-0=+ 8.Nf3 Nc5 9.Be2 Bg4 (9...e4 10.de4 Nfe4 11.Ne4 Ne4 12.0-0=) 10.0-0 e4 (10...Re8 11.d4 ed4 12.Nd4 Be2 13.Qe2=) 11.Ne1 (11.de4 Nfe4 12.Ne4 Ne4+=) 11...Be2= 12.Qe2 ed3 (12...a4 13.de4 a3 14.Bc1 Nfe4 15.Ne4 Ne4 16.Qc2=+) 13.Nd3+= Nfd7 14.Nc5 Nc5 15.Nd5 Bg5 (15...Qd7 16.Bd4+=) 16.Rad1 c6 17.Nc3 Bf6 18.Qc2 (18.Qf3 cb5 19.cb5 Bc3 20.Bc3 Qe8+=) 18...Qe7= 19.Na4 cb5 20.Bf6 Qf6 21.Nc5 dc5 22.cb5 b6 23.a4 (23.Rd7 Rfd8 24.Rfd1 Rd7 25.Rd7 Rd8 26.Rd8 Qd8=) 23...Rad8 24.h3 g6 (24...Rfe8 25.Rd8 Rd8 26.Rd1=) 25.Rd8 (25.e4 Rfe8=) 25...Rd8= 26.Rd1 (26.Rc1 h6=) 26...Kg7 (26...Rd1 27.Qd1 c4 28.Kf1=+) 27.Kf1 (27.Rc1 h6=) 27...Rd1 28.Qd1 Qe6 (28...c4 29.Ke2=) 29.Ke2 Qc4 30.Ke1 Qc3 31.Ke2 Qb4 32.Kf1 (32.Qc2 Kf6=) 32...h6 33.Ke2 Qb2 (33...Qc4 34.Kf3=) 34.Ke1 (34.Kf3 Qf6 35.Ke2 c4=) 34...c4 (34...Qc3 35.Ke2=) 35.Qd4 Qd4 36.ed4 Kf6 37.Kd2 Ke6 38.Kc3 Kd5 39.f3 (39.f4 g5=) 39...f5 (39...g5!?=+) 40.g3 g5 (40...h5 41.g4=) 41.h4 (41.f4!?=) 41…f4=+ (41...f4 42.hg5 h5 (42...hg5? 43.g4 Ke6 44.Kc4+-) 43.gf4 h4+-). Rongen - De Rooy, Helmond, 1994.

7.d4 ed4 8.Qd4 Nc5 =+.

7.Nf3 0-0 8.Qc2 Nb6 9.d4 =.

7.Nf3 0-0 8.Qc2 Nc5 9.d4 ed4 10.Nd4 (10.ed4 Ne6=) 10...Be6 (10...Bg4 11.Be2=) 11.Be2 Re8 (11...Nfd7 12.0-0=) 12.0-0 Qd7 (12...Bg4 13.Bg4 Ng4 14.Nd5=) 13.Rad1 Bg4 14.f3 (14.Bg4 Qg4 15.Nd5 Nd5 16.cd5 Bf6=) 14...Bh5 15.e4 Bg6 16.Nb3 Nb3 17.Qb3 Qc8 18.Rd2 (18.Nd5 Nd5 19.cd5 Bg5+=) 18...c6 (18...Nd7 19.Nd5=) 19.Rfd1 (19.Na4 Nd7+=) 19...Qe6 20.Ba3 Red8 21.Qa4 c5 22.b6 (22.Bb2 Nh5+/-) 22...Nh5 (22...Qe5 23.Rd3+/-) 23.Nb5 Bg5 24.Rd6 Rd6 25.Rd6 Qe5 26.Qd1 Be3 27.Kf1 Bd4 (27...Re8 28.Rd3 Bd4 29.g3+-) 28.g3 (28.Nd4 Qd6 29.g4 Qd4 30.Qd4 cd4 31.gh5 Bh5-/+; 28.Rd4?! cd4 29.Bd6 Qg5+=) 28...Nf6 29.Bc1 Qe7 30.Bg5 (30.Rd4?! cd4 31.Ba3 Qe6 32.Qd4 Rc8+/-) 30...Rb8 31.Bf6 Bf6 32.Qd5 Qe5 (32...Qe8 33.Rd7 Bd8 34.Rb7 Rb7 35.Qb7+-) 33.Qe5 Be5 34.Rd5 f6 35.Rc5 h6 (35...Be8 36.f4 Bb5 37.fe5+-) 36.f4 Bb2 37.Bf3 Be8 38.e5 fe5 39.fe5 Kf8 40.Nc7 a4 41.Ke2 a3 42.Ke3 1-0. Lagemann,Tobias (2075) - Klein,Manfred (2055), DESC, 2004.

7.Nf3 0-0 8.Be2 Nb6 9.0-0 Be6 10.d3 Nfd7 11.Ne4 f5 12.Ned2 Qe8 13.Kh1 Qf7 14.Rc1=+ a4 15.d4 a3 16.Ba1 e4 17.Ng1 Nf6 18.Nh3 Ne8 19.d5+= Bd7 20.f3 ef3= 21.Rf3 c6 22.e4 Qg6= 23.ef5 Bf5 24.dc6+= bc6 25.bc6+/- Nf6 26.Rcc3 d5 27.c5 Na4 28.Ra3 Nc5 29.Rae3 Bd6 30.Nc4+/- Ng4?? 31.Rf5 Ne3?? 32.Rf8+– Bf8 33.Ne3 Qc6 34.Bf3 (34...Ne4 35.Nd5+–; 34.Qd5 Qd5 35.Nd5 Ra2 36.Bg7 Bg7–+; 34.Nd5?! Ne4 35.Bf3 Qc4+–) 1–0. Nemec,Zdenek – Kulhanek,Jaromir, CSR Z–77, 1987.

7.Nf3 ed4 8.Bd4 Be7 9.Bd3 +=.

8.Be2 ed4 9.ed4 (9.Bd4 Be7=) 9...d5 10.0-0 Bd6 11.Ne5 0-0 12.Bf3 Ne4 13.Nd2 (13.Re1 f5+=) 13...Be5= 14.de5 Ndc5 (14...Qg5 15.Ne4 de4 16.Qd7 ef3 17.g3=) 15.cd5+= Bd5 (15...Ng5 16.Ba3+=) 16.Ne4+/- Be4 17.Ba3 (17.Be4 Ne4 18.Re1 Qd1 19.Rad1 Nc5+=) 17...Bf3+= 18.Qf3 Re8 (18...Qd4 19.Rfe1+=) 19.Bc5 bc5 20.Rfd1 (20.Rad1 Qe7+=) 20...Qe7 21.Rd5 Rad8 22.Rad1 Rd5 23.Qd5 Kf8 (23...g6 24.f4+/-) 24.f4 f6 (24...g5 25.Qc4+/-) 25.Rc1 (25.Re1 Rd8 26.Qc6 fe5 27.fe5 Rd2+/-) 25...Rd8 26.Qc5 (26.Qe4 fe5 27.fe5 Kg8+/-) 26...Rd1+= 27.Kf2 (27.Rd1 A deflection 27...Qc5) 27...Rc1 28.Qc1 fe5 ½-½. Gerding,T - Weissenstein,Hans, 1982.

8.Be2 Qe7 9.0-0 e4 A) 10.Ne1 d5 (10...g6 11.Nc3 Bg7 12.Qb3 0-0 13.Nc2 Rae8+=; 10...Rd8 11.d5 Nc5 12.Nd2 g6 13.f3 ef3+=; 10...g5 11.Nc2 Bg7 12.d5 Nc5 13.Nd4 Qd7+=) 11.Nc3 Qe6 12.cd5 Nd5 13.Qc2 Nc3=; B) 10.Ng5 h6 (10...g6 11.Nc3 Bg7 12.Qa4 0-0 13.Nh3 Rac8+=; 10...0-0-0 11.Nh3 Kb8 12.Nc3 g6 13.Nf4 Bh6+=) 11.Nh3 0-0-0 12.Nc3 g5 13.Qc2 Bg7=.

8.Be2 Qe7 9.0-0 g6 10.Nbd2 (10.Nc3 Bg7= (10...e4 11.Nd2 Bh6 12.Kh1 0-0 13.Qc2 Rfe8+=) 11.de5 de5 12.Qc2 e4 13.Nd4 a4+=; 10.d5 Bc8 (10...Nc5 11.Nc3 Bg7 12.Qc2 0-0 13.e4 Bc8+=; 10...Bg7 11.Nbd2 0-0 12.Qc2 Nc5 13.Rae1 Rae8=) 11.Nc3 Bg7 12.e4 Nc5 13.Qb1 Nh5=; 10.Qc2 Bg7 (10...e4 11.Nfd2 Bh6 12.d5 0-0 13.Bd4 Bg7+=; 10...Be4 11.Qc3 Bg7 12.de5 Ng4 13.Nd4 Nge5+=) 11.Nc3 0-0 12.Nd2 Rfe8 13.Rfd1 ed4+=; 10.Qc1 h6 (10...e4 11.Ng5 Bg7 12.Nc3 h6 13.Nh3 0-0-0+=; 10...Bg7 11.Nc3 e4 12.Nd2 0-0 13.Rd1 Rfe8+=) 11.Nc3 Bg7 12.d5 0-0 13.Qc2 Nc5+=) 10...Bh6 (10...Bg7 11.d5 0-0 12.Qc2 Nc5 13.Rfe1 Rae8=; 10...a4 11.a3 Bg7 12.Nb1 Ne4 13.Nc3 Nc3+=) 11.a4 (11.h4 0-0= 12.d5 Nc5 13.Rc1 a4=; 11.d5 0-0 12.Qc2 Bc8 13.e4 Nc5=) 11...e4 12.Nh4 (12.Ne1 Bg7 13.Qc2 0-0-0+=) 12...Bg5 13.g3 Bh4 14.gh4 h5 15.d5 Ne5 (15...0-0 16.Qc2+=) 16.f3 (better is 16.Qc2!?+=) 16...ef3= 17.Nf3 Nfg4 18.Qd4 0-0-0 (18...f6!?=) 19.Ng5+= f6 20.Ne4 (better is 20.Ne6!? f5 21.Qf4+=) 20...Kb8+= 21.h3 (21.Bc3 Rhf8+=) 21...f5 (21...Nh6!?+=) 22.Ng5= Nf6 23.Rf4 Nh7 24.Ne6 Rdg8 (24...Rde8 25.Qd2=) 25.c5 Nf6 26.cb6 cb6 27.Ba3 Nd5-/+ 28.Qe5 de5-+ 29.Be7 ef4 30.Bd6 Kc8 31.ef4?? Re8 32.Nd4 Re4 33.Rc1 Kd7 34.Be5 Rc8 35.Rc8 Kc8 36.Kf2 Nf4 37.Bf1 Re5 0-1. Trkn - prezes, itsyourturn.com, 2000.

8.Be2 Qe7 9.Nc3 A) 9...Qd8 A1) 10.0-0 Be7 11.Qc2 0-0 12.Rfd1 ed4 13.Nd4 Nc5+=; A2) 10.Qa4 Be7 (10...ed4 11.ed4 d5 12.0-0 Bd6 13.Nd2 Ne4+=) 11.0-0 0-0 12.Rad1 ed4 13.ed4 Re8+=; A3) 10.a3 Be7 11.0-0 0-0 12.Qc2 Re8 13.de5 de5+=; A4) 10.Qc2 Be7 (10...ed4 11.ed4 d5 12.Ne5 Bb4 13.0-0 0-0+/-) 11.Rd1 ed4 12.Nd4 Bg2 13.Rg1 Bb7+/-; B) 9...e4 10.Nd2 0-0-0 (10...d5 11.Qc2 dc4 12.Bc4 a4 13.Na4 Bd5+/-; 10...g5 11.0-0 Bh6 12.d5 0-0 13.Nb3 a4+/-; 10...h6 11.d5 Nc5 12.0-0 0-0-0 13.Nb3 Qd7+/-) 11.d5 Re8 12.0-0 Nc5 13.Nb3 Qd7+=; C) 9...Ra7 10.0-0 Qd8 11.Qc2 Be7 12.Rfd1 Qa8 13.Qf5 ed4+/-; D) 9...ed4 10.Qd4 Qd8 (10...Nc5 11.Nd5 Nd5 12.cd5 a4 13.0-0 a3+=; 10...Qe6 11.Rd1 Be7 12.0-0 Nc5 13.Nd5 Rc8+/-) 11.0-0 a4 12.Nd5 Be7 13.Rfd1 Nd5+=; E) 9...g6 E1) 10.d5 Bc8 (10...Nc5 11.Qc2 a4 12.e4 Bh6 13.Ba3 Nfd7+/-; 10...Bg7 11.0-0 0-0 12.Qc2 Ra7 13.e4 Rfa8+=; 10...Bh6 11.0-0 0-0 12.Rc1 Nc5 13.Na4 Na4+=) 11.Rc1 Bg7 12.e4 Nc5 13.Qc2 0-0+=; E2) 10.de5 de5 11.0-0 Bg7 12.Qc2 0-0 13.e4 Nc5+=; E3) 10.Qd2 a4 (10...Bg7 11.0-0 a4 12.a3 Ne4 13.Qc2 Nc3+=; 10...ed4 11.Qd4 Ne5 12.Nd5 Nd5 13.cd5 Bg7+=) 11.de5 de5 12.Nd5 Nd5 13.cd5 Qb4+=; E4) 10.0-0 Bg7 (10...e4 11.Nd2 Bh6 12.d5 0-0 13.a3 Rae8+=; 10...h6 11.Qc2 Bg7 12.Rfd1 0-0 13.de5 de5+=) 11.Qc2 0-0 12.Rfd1 ed4 13.ed4 Rfe8+=.

8.Be2 Qe7 9.d5 A) 9...Qd8 A1) 10.Nc3 Bc8 (10...Nc5 11.Ba3 Be7 12.Bc5 bc5 13.0-0 Rb8+=; 10...Be7 11.0-0 0-0 12.Qc2 Bc8 13.Ng5 h6+=) 11.e4 Be7 12.Bc1 0-0 13.0-0 Nc5=; A2) 10.Qc2 Bc8 (10...Be7 11.Nc3 Bc8 12.0-0 0-0 13.Ng5 h6+=; 10...Nc5 11.Ba3 Nfd7 12.Nc3 Be7 13.Nd4 ed4+=; 10...Qe7 11.Nc3 Nc5 12.0-0 Qd7 13.Ba3 Be7+=) 11.Nc3 Be7 12.Ne4 0-0 13.Nf6 Nf6+=; A3) 10.a3 Nc5 (10...Bc8 11.Nc3 Be7 12.0-0 Nc5 13.Na4 Ncd7+=; 10...Be7 11.0-0 Nc5 12.Ne1 0-0 13.Nd3 Nfd7+=) 11.Nc3 Be7 12.0-0 0-0 13.Na4 Na4=; A4) 10.0-0 Bc8 (10...Be7 11.Nh4 0-0 12.Nf5 Bc8 13.f4 ef4+=) 11.Nc3 Be7 12.Ng5 0-0 13.f4 h6+=; B) 9...a4 B1) 10.0-0 Nc5 (10...Bc8 11.Nc3 Nc5 12.Ba3 Nfe4 13.Ne4 Ne4+=; 10...g6 11.Nc3 Nc5 12.Qc2 Bg7 13.e4 a3+=; 10...Ne4 11.Nfd2 Nec5 12.Nc3 a3 13.Bc1 Qh4+/-) 11.Nc3 g6 12.Nd2 Bg7 13.Ba3 Nfd7+=; B2) 10.Nc3 Nc5 11.0-0 g6 12.Qc2 Bg7 13.e4 0-0+=; C) 9...Nc5 C1) 10.Nc3 Qd7 (10...Qd8 11.0-0 Be7 12.Na4 Na4 13.Qa4 0-0+=; 10...Bc8 11.Na4 Na4 12.Qa4 Bf5 13.Nh4 Bd7+=) 11.Ba3 Be7 12.0-0 0-0 13.Bc5 bc5+=; C2) 10.Qc2 Bc8 (10...Qd7 11.Ba3 Be7 12.Bc5 bc5 13.Bd3 Bc8+=; 10...a4 11.0-0 Bc8 12.Ba3 Nfe4 13.Nbd2 Bf5+=; 10...Nfe4 11.Nbd2 Nd2 12.Nd2 g6 13.Rb1 Bg7+=) 11.0-0 g6 12.Ne1 Bf5 13.Nd3 0-0-0+=; C3) 10.Nbd2 Qd7 (10...Bc8 11.0-0 Bf5 12.Nh4 Bd7 13.f4 ef4=; 10...Qd8 11.0-0 Be7 12.Ne1 0-0 13.Nd3 Nfd7+=; 10...a4 11.0-0 Bc8 12.Qc2 Qd7 13.Ba3 Be7+=) 11.0-0 Be7 12.Ne1 Qf5 13.Nc2 Qg6=; C4) 10.0-0 Qd8 (10...Qd7 11.Ne1 Be7 12.Nd3 0-0 13.Nc5 bc5+/-) 11.Ne1 Be7 12.Nd3 Nd3 13.Bd3 Nd7+=; D) 9...0-0-0 D1) 10.Nc3 Re8 (10...Nc5 11.Na4 Ncd7 12.0-0 Re8 13.Qc2 Kb8+/-; 10...Kb8 11.Qc2 g6 12.0-0 Nc5 13.Na4 Ncd7+=; 10...g5 11.Bd3 Nc5 12.Ng5 Nd5 13.Bf5 Kb8+=) 11.0-0 Nc5 12.Qc2 Kb8 13.Nd2 Bc8+=; D2) 10.0-0 h6 (10...Rg8 11.Nc3 g5 12.Qc2 Nc5 13.Nd2 Bg7+=; 10...Qe8 11.Nc3 Kb8 12.Qc2 g6 13.a3 Bc8+=; 10...Nc5 11.Qc2 g6 12.Nfd2 Bg7 13.Nb3 Kb8+=) 11.Qc2 Kb8 12.Nc3 Bc8 13.Nd2 g6+=; D3) 10.Qc2 h6 11.0-0 Kb8 12.e4 g5 13.Nfd2 Bg7+=; E) 9...g6 E1) 10.Nc3 Bg7 (10...Nc5 11.Qc2 Bg7 12.0-0 e4 13.Nd4 a4+=; 10...Bh6 11.0-0 0-0 12.a3 Bc8 13.Qc2 Nc5+=; 10...Bc8 11.0-0 Nc5 12.Re1 Bg7 13.Nd4 Bd7+=) 11.Qa4 Nc5 12.Qc2 Bc8 13.e4 Nh5=; E2) 10.Na3 Nc5 (10...Bc8 11.0-0 Bg7 12.Nb1 0-0 13.Nc3 Nc5=; 10...Bg7 11.0-0 0-0 12.Nc2 Bc8 13.Rb1 Nc5=; 10...Bh6 11.Nc2 0-0 12.0-0 Bg7 13.Nd2 Nc5=) 11.0-0 Bg7 12.Nd2 0-0 13.Nb3 Na4=; E3) 10.0-0 Bh6 (10...Bg7 11.Qd2 Nc5 12.Nc3 0-0 13.Qc2 e4=; 10...Nc5 11.Nc3 Bg7 12.Qd2 Bc8 13.Rac1 Bf5=; 10...Bc8 11.Nc3 Bg7 12.e4 0-0 13.Qc2 Nh5+=) 11.Qa4 Nc5 12.Qc2 Bc8 13.Qd1 0-0=; E4) 10.Nbd2 a4 (10...Nc5 11.0-0 Bg7 12.Qc2 Bc8 13.e4 0-0+=; 10...Bg7 11.Qc2 0-0 12.0-0 h6 13.e4 Nc5+=; 10...Bc8 11.0-0 Bg7 12.Re1 0-0 13.Qc2 Re8=) 11.0-0 Nc5 12.Ne1 Bg7 13.Ba3 0-0=.

7.ed4 d5 8.c5 (8.Qe2 Ne4 9.f3 Bb4 10.Nc3 f5+-) 8...c6 (8...Be7 9.Nc3=) 9.b6 (9.Nf3 Be7=) 9...Ne4 (9...Be7 10.Bd3=) 10.Bd3 Be7 11.Nf3 0-0 12.Qc2 (12.0-0 Re8=) 12...Re8 13.0-0 Bf8 (13...Ndf6 14.Re1+=) 14.Nc3 f5 (14...Ndf6 15.Rfe1+=) 15.Rfe1+/- Qf6 16.Ne2 (16.Re2 g6+/-) 16...Qh6 (16...g6 17.Bc3+=) 17.Ng3 (17.Bc1 Qf6+=) 17...Ndf6 (17...Qf6 18.a4+=) 18.Bc1+/- g5 (better 18...Qg6+/-) 19.Bg5?? (better 19.h4 Ng3 20.Re8 (20.fg3?! Re1 21.Ne1 Ne4=) 20...Ne8 21.Bg5+-) 19...Ng5=+ 20.Re8 (better 20.Ng5!? Qg5 21.Re8 Ne8 22.Nf5=+) 20...Nf3-+ (20...Ne8?! 21.Ng5 Qg5 22.Nf5=+) 21.gf3 Ne8 22.Bf5 Ng7 (22...Bf5 23.Qf5 Bg7 24.Qg4-+) 23.Bg4 (23.Bc8 Rc8 24.Re1 Ne6-+) 23...Qf4 (23...Ne6 24.Nf5 Qf6 25.Rd1-+) 24.Ne2 Qg5 (24...Qf6 25.Re1-+) 25.Kf1 (25.Qc1 Qf6-+) 25...Bg4 Black begins to deal mighty blows 26.fg4 Qg4 27.Qd2 (27.Qc3 Re8 28.Re1 Nf5-+) 27...Nf5 28.Rd1 (28.Qd3 Re8 29.h3 Qg6-+) 28...Bg7 29.Qd3 Re8 30.h3 (30.a3 Re4 31.h3 Qh4-+) 30...Qe4 31.Qd2 (31.Qe4 Re4 32.f3-+) 31...Qf3 32.Re1 (32.Kg1 Re2 33.Qe2 Qe2 34.Rf1 Bd4 35.a3-+) 32…Ne3 (32...Ne3 33.Qe3 Re3-+; 32...Re2 33.Qf4 Rf2 34.Kg1 Qg2) 0-1. Rohde,Angela - Hausmann,Ilka, BL2 Mitte, 1993.

7.ed4 Be7 8.Bd3 0-0 9.Nf3 Re8 10.0-0 Nf8 (10...Nb6 11.Nbd2+=) 11.Qc2 (11.Re1 Ne6+=) 11...Ng6 12.g3 (12.d5 Nf4=) 12...Bg4 13.Nbd2 Bf8 (13...c6 14.a4=) 14.Rfe1 Qd7 (14...Be7 15.d5=) 15.a4 h5 (15...Re1 16.Re1 Be7 17.Ng5+=) 16.c5 (16.Ng5 h4 17.Nf7+/-) 16...h4 (better 16...dc5!? 17.dc5 Nd5 18.Bg6 fg6+/-) 17.c6+- bc6 18.bc6 (18.Qc6?! Qc6 19.bc6 Ne7=) 18...Qc8 19.Bg6 fg6 20.Qg6 (20.Re8!? Qe8 21.Re1 Qf7 22.Nh4 g5+/-) 20...hg3+/- 21.hg3 d5 (21...Bh5 22.Qc2+/-) 22.Ne5 (22.Re8 Qe8 23.Qe8 Re8+-) 22...Be6 (22...Bb4 23.Qg5+/-) 23.Ndf3 (better 23.Bc3+/-) 23...Ne4?? (better 23...Bb4 24.Re3 Rf8+/-) 24.Re4+- de4 (24...Be7 25.Rf4 Rb8+-) 25.Ng5 (25.Qe4?! Qd8=) 25...Bf5 26.Qf7 Kh8 27.Qh5 Kg8 28.Qf7 (28.Nef7 e3 29.Qh8) 28...Kh8= 29.Kg2 (29.Kg2 Bh3 30.Nh3 Qd7 31.Ng6 Kh7 32.Rh1 Kh6 33.Nhf4 Qh3 34.Rh3 Kg5 35.Rh5 Kg4 36.Qf5) 1-0. zembelek (2080) - crazyslon (1925), Rated Blitz game, lichess.org, 2014.

7.ed4 Be7 8.Nf3 0-0 9.Be2 Re8 10.0-0 Nf8 11.Nc3 Ng6 12.Qd2 c6 (12...d5 13.Ne5=) 13.a4 (13.d5 cb5 14.cb5 Bf5+=) 13...d5= 14.c5 Bf5 15.Ne5 (15.Rfe1 Ne4 16.Qc1 Ng5=) 15...Ne4 (better 15...Ne5 16.de5 Nd7-/+) 16.Ne4+= Be4 17.f4 (17.bc6 Ne5 18.cb7=) 17...f5? (17...Ne5 18.fe5 f6 19.Bh5+=) 18.Bh5 (better 18.bc6!? b6 19.Ng6 hg6 20.cb6 Qb6 21.Bb5+-) 18...Ne5+= 19.Be8?? (better 19.fe5 Bg5 20.Qf2+=) 19...Nc4-+ 20.Qe2 (20.Bf7 Kf7 21.Qf2 b6-+) 20...Qe8 21.Bc3 (21.b6 Qg6-+) 21...Qg6 (21...cb5 22.ab5 Qb5 23.Rf2-+) 22.g3 (22.Ra2 b6 23.cb6 Rb8-+) 22...Rf8 (22...b6 23.cb6 cb5 24.b7-+) 23.b6 h5 24.Kf2 (24.Rfd1 h4 25.Be1 Bf6-+) 24...h4 25.Rg1 h3 (better 25...Qf6 26.Rac1 hg3 27.hg3 Qg6-+) 26.g4?? (26.Rge1-+) 26...fg4 (better 26...Bh4 27.Rg3 fg4 28.Kg1 Rf4 29.Be1-+) 27.Rg4 Qh6 28.Bd2 (28.Kg3-+) 28...Bh4 29.Kf1 (29.Kg1 Bf5 30.Rg3 Bg3 31.hg3 h2 32.Qh2 Qh2 33.Kh2 Nd2-+) 29...Bg2 (better 29...Bf3! 30.Qf3 Nd2 31.Ke2 Nf3 32.Rh4 Qg6 33.Rg4 Re8 34.Kf3 Qd3 35.Kf2 Qe3 36.Kf1 Qe2 37.Kg1 Qg4 38.Kf2 Qg2) 30.Kg1 Bf6 (better 30...Nd2!? 31.Qd2 Bf3 32.Rh4 Qh4 33.Qe1-+) 31.Bc3 Qh7 (31...Be4 32.Rd1-+) 32.Re1 Be4 33.Qf1 Bf5 34.Rg3 Qh6 35.Qf2 (35.Re2 Bh4 36.Rf3 Bg4-+) 35...Bh4 36.Kh1 Bg3 (36...Bd3 37.Qf3 Bg3 38.hg3-+) 37.hg3 Be4 38.Kh2 Qh5 (38...g5 39.Bd2-+) 39.Qf1 Qg4 (better 39...Qg6-+) 40.Re4 de4 41.Qc4 Kh7 42.Qf1 e3 (better 42...g5!? 43.Bd2 gf4 44.gf4 e3 45.Ba5 Rf5-+) 43.Qh3-/+ Qh3 44.Kh3 Re8 45.Be1? (45.Kg2 g5!-/+) 45...e2 (45...Re4 46.Ba5 Rd4 47.Kg2-+) 46.Kg2 Re3 (better 46...Re4!?-+) 47.Kf2=+ Ra3 (47...Re4 48.Ba5 Kg6 49.Bc3=) 48.Ba5= Ra4 49.Be1 (49.Bd2!?=) 49...Rd4-/+ 50.Ke2 Kg6 (50...Re4 51.Kf1-/+) 51.Bf2=+ Rc4 52.Kd3 Ra4 53.Be3 (53.Ke2!?-/+) 53...Kf5 54.Bd4 (54.Bf2 Ra3 55.Kc4 Ra2-+) 54...g6 (54...Ra3 55.Kc2 Rg3 56.Be5-+) 55.Bf2 Kg4 56.Be1 Kf3 57.Kc2 (57.Bd2 Kg3 58.Bc1 Rf4-+) 57...Ke2 (57...Rc4!? 58.Kd1-+) 58.Bc3 (58.Kb3 Re4 59.Bc3 Kf3-+) 58...Re4 59.Be5 Re3 (better 59...Rc4!? 60.Kb3 Rc5 61.g4-+) 60.g4 (60.Bd6!?-+) 60...Kf3 61.g5 Re4 62.Bd6 Ke3 (worse 62...Rf4 63.Kb3-+) 63.Be5 (63.Kc3 Rf4 64.Be7 Rf5-+) 63...Ra4 (63...Rf4 64.Kb3-+) 64.Kb3? (64.Kc3-+) 64...Re4 65.Kc3?? (65.Kc2 Rf4 66.Kc3-+) 65...Kf3 66.Kd3 Ra4 (better 66...Rf4 67.Bf6 Rf5-+) 67.f5-/+ gf5 68.g6 Rg4 69.g7 Kf2 70.Bd4 Kf3 71.Bc3 (71.Be5 f4 72.Kd4-+) 71...f4-/+ 72.Kd4?? (better 72.Be5-/+) 72...Ke2-+ 73.Ke5 f3 74.Kf5 Rg2 75.Bd4 f2 76.Bf2 Rf2 (76...Rg7?! 77.Bd4 Rh7 78.Ke6-+) 77.Kg6 Rg2 78.Kh7 Kd3 79.g8Q Rg8 80.Kg8 Kc4 (80...Kc4 81.Kf7 Kc5 82.Ke6 Kb6 83.Kd6 c5 84.Kd5 Kb5 85.Ke4 Kc4 86.Ke3 b5 87.Kd2 b4 88.Kc2 b3 89.Kb2 Kb4 90.Kb1 Kc3 91.Kc1 b2 92.Kd1 Kd3 93.Ke1 Ke3 94.Kf1 b1Q 95.Kg2 Qg6 96.Kf1 c4 97.Ke1 Qb1) 0-1. Benachamohcine1 (1935) - SevillaChess (1925), Rated Blitz game, lichess.org, 2015.

7.Bd4 b6 8.Be2 Bb7 (8...Be7 9.Bf3 Ra7 10.Ne2=) 9.Bf3 Bf3 10.Nf3 g6 (10...Be7 11.0-0+=) 11.h4 (11.Nbd2 Bg7+=) 11...Bg7+= 12.h5 gh5 13.Nc3 0-0 (13...Rg8 14.Rh2+=) 14.Qc2 Re8 15.0-0-0 (15.Nd5 a4+/-) 15...Qe7 (15...Rc8!?+=) 16.Nd5+/- Nd5 17.cd5 Bd4 (17...Qe4 A) 18.Qc7?? Rec8 19.Qc6 Qd5-+ (19...Rc6?! 20.dc6 Ne5 21.Rh4 Nd3 22.Kd2-+); B) 18.Rh5 Qc2 19.Kc2 Bd4 20.Rd4+- (20.ed4?! Re2 21.Rd2 Rae8=)) 18.Rd4+- (18.ed4?! Qe2=) 18...Nf6 19.Qf5 Ne4 20.Nd2 (better is 20.Rh5!? f6 21.Rh4 Nf2 22.Nd2 Qe3 23.Rdg4 Ng4 24.Rg4 Qg5 25.Rg5 fg5 26.Qg5 Kh8 27.Qh4+-) 20...Qf6+/- 21.Qh5 Nf2? (21...Nc3!? 22.Kc2 Nb5 23.Qh7 Kf8+/-) 22.Rhh4 (22.Qh7 Kf8 23.Rhh4 Qg7+-) 22...Re3? (better is 22...Qg6 23.Qe2 Qg2+-) 23.Qh7 Kf8 24.Qh8 Ke7 25.Qf6 Kf6 26.Rhf4 Ke7 (26...Kg7 27.Rf2 Rae8 28.Nf3+-) 27.Rf2 Rh8 (27...Kf8 28.Nf3 Rae8 29.Ng5+-) 28.Re4 (28.Rc4 Rc8+-) 28...Re4 29.Ne4 1-0. Zschalich - Kowalczyk, BezM Leipzig, (year?).

7.Bd4 Be7 8.Nf3 =.

7.Bd4 g6 8.Nf3 +=.

7.Nd2 0-0 8.Bd3 ed4 9.ed4 d5 =.

7.Nd2 0-0 8.Ngf3 ed4 9.ed4 (9.Nd4 Nc5=) 9...Re8 10.Be2 Nf8 11.0-0 Ng6 12.g3 Bf5 13.Re1 Ne4 (13...Qd7!?=) 14.Ne4+= Be4 15.Bf1 (15.Bd3 Bd3 16.Qd3 d5+=) 15...Bf5 16.Bg2 Qd7 17.Nd2 c6 18.a4 (18.Qa4 Rec8 19.bc6 bc6+=) 18...d5= 19.bc6 bc6 20.c5 (20.Bc3 Rab8=) 20...Bg5 21.Nf3 Bf6 22.Qd2 Reb8 23.Bc3 Qc7 (23...Rb3 24.Ra2+=) 24.Rf1 (24.Ra2 Rb3=) 24...Rb3 25.Ne1 (25.Rae1 h5=) 25...Qb7 (25...Nf8 26.Nf3+=) 26.f4 (26.Nc2!?=) 26...Qa6+= 27.Nf3 Be4 28.Rfc1 Qd3 (28...Rab8 29.Bf1 Qa7 30.Ng5+=) 29.Qd3 Bd3 30.Ne5 (30.h4!?+=) 30...Ne5-/+ 31.fe5? (better is 31.de5 Be7 32.Bd4-/+) 31...Bg5-+ 32.Bh3 Be3 33.Kg2 Be4 34.Kf1 Bc1 35.Rc1 f5 36.ef6 gf6 37.Bd7 Ra6 38.Ke2 (38.Bg4 Ra3 39.Bd1 Ra2-+) 38...Rb1 (better is 38...Ra3-+) 39.Kd2 Rc1 40.Kc1 Kf7 41.Bd2 Ke7 42.Bh3 Bd3 43.Bf4 Ra7 44.Kd2 Be4 45.Bf1?! Rb7 46.Bd3 Bd3 47.Kd3 Rb4 48.Bd2 Ra4 49.Kc2 Ra2 (49...Ra2 50.Kc3 Rd2 51.Kd2 Ke6-+) 0-1. Sturc,Gustav (2010) - Goga,Frantisek (1885), Piestany SVK, Open, 2013.

7.Nd2 0-0 8.Ngf3 ed4 9.Bd4 Nc5 10.Qc2 Qd7 11.Nb3 Ne6 =.

7.Nd2 0-0 8.Ngf3 e4 9.Ng5 d5 10.cd5 +=.

7.Nd2 c6 A) 8.Be2 0-0 (8...cb5 9.de5 de5 10.cb5 e4 11.Qc2 Bb4=) 9.Nh3 cb5 10.cb5 a4 11.Rc1 Nb6=; B) 8.Qf3 ed4 9.Bd4 Ne5 10.Qf4 Ng6 11.Qg3 0-0=; C) 8.bc6 bc6 9.Qa4 Qc7 10.Ngf3 0-0 11.Bd3 ed4=; D) 8.Bd3 0-0 (8...ed4 9.ed4 d5 10.c5 a4 11.Ne2 0-0+=) 9.Ngf3 ed4 10.Bd4 Nc5 11.Bb1 Ne6=.

7.Nd2 ed4 8.Bd4 0-0 (8...Nc5 9.Ngf3 Bf5 10.Be2 0-0 11.0-0 Re8=; 8...a4 9.Ngf3 Nc5 10.Bc5 dc5 11.Qc2 Bd6=) 9.Ngf3 Nc5 10.Qc2 Qd7 11.Nb3 Ne6 =.

7.Nd2 h6 8.Bd3 0-0 (8...ed4 9.ed4 a4 10.Ngf3 d5 11.c5 0-0+=) 9.Ngf3 Re8 10.0-0 ed4 11.Bd4 Ne5 =.

7.Nf3 0-0 8.Be2 (8.Nbd2 ed4 9.Bd4 Nc5 10.Be2 Bf5 11.0-0 Re8=; 8.Qc2 a4 (8...Re8 9.Bd3 a4 10.0-0 ed4 11.Bd4 Nc5+=; 8...ed4 9.Bd4 Re8 10.Bd3 Nc5 11.Bc5 dc5=; 8...b6 9.Be2 ed4 10.Nd4 Bb7 11.0-0 Re8+=) 9.de5 de5 10.Ne5 Bb4 11.Bc3 Bc3=; 8.a3 ed4 (8...e4 9.Nfd2 c6 10.Nc3 d5 11.c5 cb5=; 8...Qe8 9.de5 de5 10.Ne5 Ba3 11.Ra3 Ne5+=) 9.Bd4 Nc5 10.Be2 Nfe4 11.Nbd2 Bf6=) 8...ed4 9.ed4 (9.Nd4 a4 10.0-0 Re8 11.a3 Ne4=) 9...Nb6 (9...Re8 10.0-0 d5 11.c5 Ne4=) 10.0-0 Re8 11.Bd3 (11.Re1 Bf5=) 11...c6 (11...d5 12.c5 Nc4 13.Bc4 dc4 14.Nbd2=) 12.Na3 Bg4 (12...Nh5 13.Bc1+=) 13.Re1+= cb5 (13...h6 14.Rb1+=) 14.Nb5+/- d5 15.c5 Nc4 16.Bc4 dc4 17.Rc1 (17.Qc2 Bf3 18.gf3 Qd7 19.Qc4 Qc6+=) 17...Nd5 18.Rc4 Bf3 19.Qf3 Qd7 20.Nc3 Bc5 21.Rd1 (21.Re8 Re8 22.g3 Nc3 23.Bc3 Bb6+=) 21...Nc3= 22.Rc3 Qe6 (22...Bb4 23.Rb3 Rac8 24.Bc3=) 23.g3 (23.Rc5?? Qe1 24.Re1 Re1; 23.dc5?? Qe1 24.Re1 Re1) 23...Bd6 24.Rb3 Qe2 25.Qe2 Re2 26.Rb7 Rc8 27.d5 a4 ½–½. Woelfelschneider,Peter – Benassi,Aspasio, corr TMK/A004, 1999.

7.Nf3 ed4 A) 8.Bd4 0-0 (8...Nc5 9.Bc5 dc5 10.Qd8 Bd8 11.Nc3 Be7+=; 8...Nf8 9.Bd3 Ne6 10.0-0 0-0 11.Qc2 Nd4=) 9.Bd3 Nc5 10.Bc5 dc5 11.Qc2 Bd6=; B) 8.Nd4 B1) 8...0-0 9.Nc3 (9.Be2= Nc5 10.0-0 Qe8 11.Nc3 a4=) 9...Nb6 10.Bd3 Nbd7 11.0-0 Ne5+=; B2) 8...Nc5 9.Be2 0-0 10.0-0 Be6 11.Nd2 Nfd7=; B3) 8...Ne5 9.Be2 0-0 10.0-0 Re8 11.Nc3 Bg4=; B4) 8...a4 9.Be2 0-0 10.0-0 Nc5 11.a3 Nfe4=; C) 8.Qd4 Nc5 (8...0-0 9.Be2 Nb6 10.Nc3 Re8 11.0-0 a4=; 8...a4 9.Be2 0-0 10.0-0 Nc5 11.Nbd2 Re8=; 8...Nb6 9.Nc3 Be6 10.Bd3 Nfd7 11.Nd5 Nd5=) 9.Be2 Na4 10.Bc1 0-0 11.0-0 Nd7=; D) 8.ed4 0-0 (8...d5 9.c5 Ne4 10.Bd3 0-0 11.0-0 b6=; 8...a4 9.Bd3 0-0 10.0-0 Re8 11.Re1 d5+=) 9.Bd3 Nb6 10.Nbd2 Re8 11.0-0 c6=.

7.Nf3 e4 8.Nfd2 Nb6 (8...d5 9.Nc3 c6 10.Qb3 Nb6 11.c5 Nbd7+=; 8...c6 9.Nc3 d5 10.Qb3 Bb4 11.a3 Bc3+=) 9.Nc3 d5 10.c5 Nbd7 11.Be2 0-0 +=.

7.Nd4 a4 8.Be2 =.

7.Nd4 Be7 8.Be2 =.

7.Nd4 g6 A) 8.Be2 Bg7 A1) 9.0-0 Qe7 10.Nc3 0-0 11.f3 Nc5 12.Qc2 Re8 13.fe4 Nce4 14.Bf3 Bd7; A2) 9.Qc2 Qe7 10.Nc3 0-0 11.0-0 Nc5 12.f3 a4 13.a3 Re8 14.fe4 Nce4; A3) 9.a4 0-0 (9...Qe7 10.Nc3 0-0 11.0-0 Nc5 12.Qc2 Re8 13.f3 Bd7 14.fe4 Nce4; 9...Nc5 10.0-0 0-0 11.Nc3 Re8 12.f3 Bd7 13.Qc2 Qe7 14.fe4 Nce4; 9...Ne5 10.Nc3 c5 11.bc6 bc6 12.d3 ed3 13.Bd3 0-0 14.0-0 Ba6) 10.Nc3 Re8 11.0-0 Nc5 12.f3 Bd7 13.Qc2 Qe7 14.fe4 Nce4; A4) 9.Nc3 0-0 (9...Nc5 10.0-0 0-0 11.Qc2 a4 12.a3 Qe7 13.f3 Re8 14.fe4 Nce4) 10.0-0 Nc5 11.a4 Bd7 12.Qc2 Re8 13.f3 Qe7 14.fe4 Nce4; B) 8.Nc3 Bg7 B1) 9.Be2 Nc5 (9...0-0 10.0-0 Nc5 11.Qc2 a4 12.a3 Re8 13.f3 ef3 14.Bf3 Bg4) 10.0-0 0-0 11.f3 a4 12.a3 Re8 13.Qc2 ef3 14.Bf3 Bg4; B2) 9.Qc2 Nc5 (9...0-0 10.Ne4 Ne4 11.Qe4 Nc5 12.Qc2 Re8 13.Be2 Qg5 14.0-0 Bh3; 9...Qe7 10.Nd5 Nd5 11.cd5 Nc5 12.Nf5 Bf5 13.Bg7 Rg8 14.Qc3 Nd7) 10.Be2 0-0 11.0-0 a4 12.a3 Qe7 13.f3 Re8 14.fe4 Nce4; B3) 9.a4 0-0 (9...Nc5 10.Be2 0-0 11.0-0 Qe7 12.Qc2 Re8 13.f3 Bd7 14.fe4 Nce4; 9...Qe7 10.Be2 0-0 11.0-0 Nc5 12.Qc2 Re8 13.f3 Bd7 14.fe4 Nce4) 10.Be2 Qe7 11.0-0 Nc5 12.Qc2 Re8 13.f3 Bd7 14.fe4 Nce4; B4) 9.d3 ed3 10.Bd3 0-0 11.0-0 Nc5 (11...Qe7 12.Nd5 Nd5 13.cd5 Nc5 14.e4 Re8) 12.f3 Qe7 13.Qd2 (13.Qe2 Bd7 14.Bc2 a4) 13...a4 14.Nd5 Nd5.

8.Qc2 g6 (8...a4 9.Be2 g6 10.0-0 Bg7 11.a3 Qe7 12.Nc3 0-0 13.f3 Re8) 9.Nc3 a4 10.a3 Bg7 11.Be2 0-0 12.0-0 Qe7 13.f3 Re8.

8.Nc3 a4!?= 9.Qc2 a3 10.Bc1 g6 11.d3 ed3 12.Bd3 Bg7 13.0-0 0-0.

8.Nc3 Be6 9.Ne6 fe6 10.d4 ed3 11.Bd3 Qd7 12.Bc2+= Be7 13.Qe2 0-0= 14.0-0 c6 15.Rad1 Qe8 16.Na4 Ncd7 17.bc6 bc6 18.Qf3 d5= 19.Qh3 Bd6 20.e4+= h6 21.ed5+/- ed5 22.Rfe1 Qf7 23.Bf5+– Kh8 24.Re6 Be5 25.Re5 Ne5 26.Be5 Qe7 27.f4 Kg8 28.c5 Rad8 29.Qc3 Qf7 30.Qh3?? Qe7 31.Re1 d4 32.Bc2 d3 33.Bd3 Rd4 34.Qg3 Ra4 35.Bd6 Qd8?? 36.Re7+– Rf7 37.Rf7 Nh5 38.Qg6 Rf4 39.Rb7 (39...Rf1 40.Bf1 Kh8 41.Rg7 Ng7 42.Qh6 Kg8 43.Bc4 Ne6 44.Be6#) 1–0. Hromada,Vaclav – Sopko,Cassio Roberto, corr, 1970.

8.Nc3 Be7 9.d3 =.

8.Nc3 Ng4 9.Qc2+/- f5 (9...Nf6 10.Be2 g6 11.Nb3 Nd3 12.Bd3 ed3 13.Qd3 Bg7) 10.d3 (10.Be2 Be7+/- (10...Nf6 11.0-0 Be7 12.f3 a4 13.fe4 a3) 11.0-0 0-0 12.f3 Nf6 13.Nb3 a4) 10...Nf6 (10...ed3 11.Bd3 Nd3 12.Qd3+= Be7 13.0-0 0-0) 11.de4+/- fe4 12.h3 (12.Nb3 Nb3 13.ab3 Bf5) 12...Qe7 (12...Be7 13.Nb3 Nb3) 13.Nb3 (13.Be2 g6) 13...h5 (13...Qe6 14.Nc5 dc5 15.g4+/-; 13...b6+/-) 14.Nc5 dc5 15.0-0-0 c6 16.f3 Bd7? (better 16...ef3!? 17.e4 Be6+=) 17.fe4+- 0-0-0 18.Qa4?? (18.bc6 Bc6 19.Rd8 Qd8+-) 18...Be8?? (better 18...Ne4 19.Qa5 Nc3 20.Bc3 Qe3 21.Kb2 Bd6 22.Rd6 Qf2 23.Rd2 Qg3 24.Qa8 Qb8 25.Qb8 Kb8+-) 19.Be2+- Rd1 20.Rd1 (20.Bd1?! Ne4 21.Re1 Nc3 22.Bc3 cb5 23.cb5 b6=) 20...Qc7 21.e5! Nd7 (21...Qe5 22.Qa5 Deflection) 22.bc6 bc6 23.Nd5 (better 23.e6 Nf6 24.Bf3+-) 23...cd5+/- 24.cd5 Nf6? (better 24...Qb6!?+/-) 25.Ba6+- Kd8? (better 25...Kb8 26.Qb3 Ka7+-) 26.Qh4 1-0. Sokolski,Alexey - Szoelloesi,Laszlo, corr USSR-Hungary, 1967.

8.Be2 d5 =.

8.Be2 g6 9.0-0 Bg7 10.f3 0-0 11.Nc3 a4 12.Ne4 Nfe4 13.fe4 Ne4.

7.d4 ed4 8.ed4 0-0 9.Bd3 Re8 10.0-0 Nf8 11.Nc3 Bg4 12.h3 Bh5 13.d5 N8d7 14.Be2 Bf8 (14...Nc5 15.Re1=) 15.Nd4 Bg6 16.f4 Be4 17.Ne4 Ne4 18.Bf3 Ndc5 Black prepares a4 19.Qc2 a4 (19...Qh4 20.Be4 Ne4 21.Rae1+=) 20.Rae1 (20.Rfe1 a3 21.Ba3 Ra3 22.Be4 g6=) 20...a3 (20...Ng3 21.Re8 Qe8 22.Rd1 Qe3 23.Qf2 Qf4 24.Ne2 Ne2 25.Be2 Qf2 26.Kf2=+) 21.Ba1 (21.Be4!? ab2 22.Bh7 Kh8 23.Bf5 Ra2 24.Re8 Qe8 25.Qc3+/-) 21...Ng3= 22.Re8 Qe8 23.Rd1 Qe3 24.Qf2 Re8?? (better 24...Qf4 25.Ne2 Ne2 26.Be2 Qf2 27.Kf2 g6=+) 25.Qe3+- Re3 26.Kf2 (26.Kf2 Rf3 27.Kf3+-) 1-0. benachamohcine (2090) - crazyslon (1980), Rated Blitz game, lichess.org, 2014.

7.d4 ed4 8.Nd4 0-0 9.Nd2 Nc5 10.Be2 Re8 11.0-0 Bf8 12.Qc2 g6 13.Bf3 (13.N2b3 Na4=) 13...Bg7 14.Rfe1 Rb8 (14...Ng4 15.Bd5=) 15.Bc3 (15.N2b3 Ra8+=) 15...b6?? (better 15...a4=) 16.Nc6+- (16.Nc6 Qd7 17.Nb8+-) 1-0. zembelek (2065) - crazyslon (1940), Rated Blitz game, lichess.org, 2014.

7.d4 e4 8.Nfd2 c6 9.Be2 d5 10.a4 0-0 11.0-0 Re8 12.Nc3 Nf8 13.Qb3 (13.c5 Be6+=) 13...Be6 14.Rfc1 Ng6 15.Ba3 Bg4 16.Bf1 Nh4 17.bc6 bc6 18.cd5 cd5 19.Nb5 Rb8 20.Be7 (20.Rab1 Ng6=) 20...Qe7 (20...Re7 21.Rc5+=) 21.Qa3 (21.Rc7 Qc7 22.Nc7 Rb3 23.Nb3 Rc8+/-) 21...Qd7 (21...Qa3 22.Ra3 Rec8 23.Rc8 Rc8+/-) 22.Rc7+/- Qf5 (22...Qd8 23.Qc3+/-) 23.Nd6 Qg5 (better 23...Qg6!? 24.Ne8 Ne8+/-) 24.Ne8+- Re8 25.Rac1?? (better 25.g3 Nf5 26.Qc3+-) 25...Ng2+= 26.Qd6?? (26.Kh1 Nh4 27.Qd6 Nf3=) 26...Nh4?? (better 26...Ne3!? 27.h4 Qh6-+) 27.Qg3 (27.Bb5 Nf5 28.h4 Qg6+= (28...Nd6? 29.hg5 Nb5 30.ab5+-; worse 28...Qh4 29.Qh2+/-)) 27...Nf5= 28.Qf4 (28.Qg2 Nh4 29.Qg3 Nf5=) 28...Qg6 (28...Qf4!? 29.ef4 Nd4=+) 29.Kh1= h6 (29...Nh5 30.Qe5 Nf6 31.Qf4=) 30.Rc8 (30.Ra7 Nh4 31.h3 Nf3 32.Nf3 Bf3 33.Kh2 Nh5+/-) 30...Rc8 (30...Ng3 31.Qg3 Bc8 32.Qg6 fg6 33.Rc5=) 31.Rc8+= Kh7 32.Rc6 Qh5 33.Bg2 Nh4 34.Qg3 (34.Rc1!?=) 34...Ng2 35.Kg2 (35.Qg2? Bh3 36.Qg1 Qe2-+) 35...Bd7 36.Rd6 (36.Rc2-/+) 36...Be6 (36...Qd1!? 37.Rd7 Nd7 38.Qf4-+) 37.Nf1 (37.Nb1 Qe2 38.Nc3 Qc4 39.Re6 fe6-+ (39...Qc3? 40.Re7 Qc8 41.Rf7+-)) 37...Qe2 (better 37...Qd1 38.Kg1 Qa4-/+) 38.Qf4?? (38.Kg1-/+) 38...Ng4 (better 38...Nh5 39.Qh4 g5 40.Qh5 Qh5 41.Re6 Qg4 42.Ng3 fe6-+) 39.Ng3= Qb2 (better 39...Qd1!? 40.Ne4 de4 41.Qe4 g6=) 40.Re6!+/- fe6? (40...fe6 41.Qg4 Remove defender) 41.Qg4+- Qb6 42.Nh5 (better 42.h4 Qd6 43.Nh5+-) 42...Qc7 (42...g5+-) 43.Qe6 Qc8 (43...Qd8+-) 44.Qc8 g6 (44...Kg6 45.Qe6 Kh5 46.Kg3 Kg5 47.h4 Kh5 48.Qg4) 45.Qd7 Kg8 46.Nf6 (46.Qg7) 46...Kf8 47.Kg3 (47.Qe8 Kg7 48.Qe7 Kh8 49.Qf8) 47...g5 48.Kg4 h5 49.Kf5 g4 50.Kg6 g3 51.Qf7 (51.Qd6) 1-0. (235) jhonores (2230) - KraljMilutin (2200), Rated Bullet game, lichess.org, 2020.

7.Be2 0-0 8.0-0 Nc5 9.a4 (9.d4 ed4 10.ed4 Nce4=) 9...Bf5 (9...e4 10.Nd4=) 10.Nc3 c6 (10...e4 11.Nd4 Bg6 12.f3=) 11.d3 (11.d4 Ncd7=) 11...Qc7 12.e4 Bd7 13.d4 (13.Re1!?=) 13...ed4=+ 14.bc6?? (14.Nd4 Nfe4 15.Ne4 Ne4=+) 14...bc6 (better 14...dc3 15.cb7 Rab8 16.Bc3 Nfe4–+ (16...Qb7?! 17.e5 de5 18.Ne5–+; 16...Nb7?! 17.Nd2–+)) 15.Nd4=+ Nfe4 16.Ne4 Ne4 17.Bd3 Nf6 (17...Nc5 18.Nf5 Bf5 19.Bf5=+) 18.Qf3 (18.Rb1 Rfe8=+) 18...Rfe8 (18...Rab8 19.Rab1=+) 19.Nf5 Bf5 20.Bf5 h6 (20...Rad8 21.Rfe1=+) 21.Rfe1= Rad8 22.Qc3 (22.Rab1 d5 23.Be5 Qa7=) 22...Nh5 23.Qh3 (23.Qe3 Kf8=+) 23...Bf6–/+ 24.Bf6 Nf6 25.g4 (25.Qf3 d5–/+) 25...Re5 (25...d5 26.Qf3–+) 26.Re5 (26.Qc3!?–/+) 26...de5–+ 27.Qf3 (27.c5 Rd4–+) 27...Rd4 28.Rb1 (28.c5 g6 29.Bc2 Rg4 30.Kh1 Rf4–+) 28...Rc4 29.Qb3 (29.Qd3 Rd4 (29...Ra4?? 30.Rb7 g6 31.Rc7+–) 30.Qc2 c5–+) 29...Rb4 30.Qd3 (30.Qd1 e4–+) 30...Rb1 (30...g6 31.Rb4 ab4 32.Be4–+) 31.Qb1 Nd5 (31...g6 32.Be4–+) 32.Qd3 (32.Qc2 Qd6–+) 32...Nf4 33.Qc4 (33.Qd1 g6 34.Be4 h5–+) 33...Qd6 34.h4 (34.Qb3 g6 35.Bc8 h5–+) 34...Qd5 (better 34...Qd1!? 35.Qf1 Qa4 36.Qe1–+) 35.Qd5 cd5 36.f3 (36.Kf1 Kf8–+) 36...Kf8 (36...Ng6 37.Bd7–+) 37.Kf2 Ke7 38.h5 (38.Kg3 g6 39.Bc2 h5–+) 38...Kd6 (38...g6 39.hg6 fg6 40.Bb1–+) 39.Ke3 (39.Bc2 g6–+) 39...Kc5 (better 39...g6!? 40.hg6 fg6 41.Bc2–+) 40.Bd7 Kc4 41.Be8 (41.Kd2 Ne6–+) 41...f6 (41...Kc3 42.Kf2 d4 43.Bf7–+) 42.Bb5 (42.Kd2 Ne6–+) 42...Kc3 43.Bf1 d4 44.Ke4 d3 45.Bd3 Nd3 46.Kf5 Nf4 47.g5 hg5 48.Ke4 Kb4 (48...Kb4 49.Kf5 Nh5–+) 0–1. Hilbert,Stephan J (1650) – Vollmer,Steve, FICGS, 2013.

7.Be2 0-0 8.d4 ed4 9.Nd4 Ne4 10.Qc2 Ndc5 11.Nc3 Nc3 12.Bc3 Bf6 13.0-0 Re8 14.Bf3 Qe7 (14...a4 15.Rad1=) 15.Nb3 Bc3 16.Qc3 Qe5 (16...Ne4 17.Be4 Qe4 18.Na5=) 17.Qe5+= Re5 18.Rfd1 g6 (18...Nd7 19.Nd4+=) 19.b6+– cb6 (19...a4 20.Nc5 Rc5 21.bc7 Rc7 22.Rd6 Rc4 23.Rad1+=) 20.Rd6 Be6 21.Rb6 Bc4 22.Bb7 Rb8 (better 22...Nb7!? 23.Rb7 Bb3 24.ab3 Kg7+–) 23.Na5+– Nd7 (23...Bd5 24.Bd5 Rb6 25.Nc4 Rd5 26.Nb6+–) 24.Nc4 Nb6 25.Ne5 (25.Nb6 Rb7 26.Nc4 Rc5–/+) 25...Rb7 26.Kf1 (26.Rb1 Rc7+–) 26...f6 27.Nd3 Ra7 28.Ke2 Ra3 29.Nb4 Na4 30.Kd2 Kf7 (30...Nc5 31.Nc2 Ne4 32.Ke1+–) 31.Rc1 Nb6 (31...h5 32.e4+–) 32.Rc7 Kg8 33.e4 Ra4 (33...h5 34.Kc2+–) 34.Kc3 f5 (34...h6 35.f4+–) 35.Rb7 Ra3 36.Kd4 Na4 37.e5 Nc3 38.e6 Kf8 39.Rh7 Na2 (39...Kg8 40.Rb7 Kf8+–) 40.e7 Ke8 41.Nd5 Ra4 42.Ke5 Re4 (42...Kd7 43.Nb6 Kc6 44.e8Q Kc5 45.Rc7 Kb6 46.Qb8 Ka5 47.Ra7) 43.Kd6 g5 (43...Re7 44.Nf6 Kf8 45.Re7 Nc3 46.Ke6 g5 47.Rf7) 44.Nf6 1–0. GuestMZWJ – GuestVGDJ, freechess.org, 2018.

7.Be2 Nc5 8.d4 Nce4 (8...ed4 9.ed4 Nce4 10.0-0=) 9.Nbd2 (9.de5 Ng4 10.0-0 de5 11.Qd8 Bd8 12.Ne5 Ne5 13.Be5 Bf6 14.Bf6 Nf6+–) 9...ed4 10.Ne4 de3? (better 10...Ne4!? 11.Qd4 Nf6+=) 11.Nf6 (11.Qd3 ef2 12.Nf2 Nh5+–) 11...Bf6 12.Bf6 Qf6 (12...ef2 13.Kf2 Qf6 14.Re1+–) 13.fe3 Qc3 (13...0-0 14.Qd4 Qe7 15.Rd1+–) 14.Kf2 0-0 15.Qd4 Qc2 16.Qd3 Qb2 17.Qd4?? (17.Nd4 Bg4+–) 17...Qc2 18.Qd3?? (18.b6 cb6 19.Qd6 Be6+–) 18...Qb2 19.Nd4 Qb4 20.Rhf1 Qc5 21.Kg1 Qg5 22.Rf3 Bg4 23.Rg3 Be2 24.Ne2 (24.Rg5 Bd3 25.Rc1 Rae8–/+; 24.Qe2?! Qc5+–) 24...Qe5 25.Rf1 Rae8 26.Rh3 (26.Nd4 Qc5+–) 26...g6 27.Nf4 c6 28.Rd1 Rd8 29.bc6 bc6 30.Qa3 f5 (30...Rfe8 31.Qa4 Qc5 32.Nd3+–) 31.Qa4 g5 (31...Rc8 32.c5! d5 33.Qa5+–) 32.Nh5 (better 32.Rg3!? Kh8 33.Nd3 Qc3+–) 32...Qc5 0–1. GuestYDBL – GuestCXKT, freechess.org, 2017.

7.d4 Qe7 8.Nc3 A) 8...ed4 9.Nd5 Nd5 10.cd5 Bg7 11.Rc1 0-0 12.Bd4+= ; B) 8...h6 9.Rc1 (9.Be2 Bg7 10.0-0 0-0 11.Qc2 Nb6 12.de5+= ; 9.de5 Ne5 10.Nd5 Nd5 11.cd5 Bg7 12.Ne5+= ) 9...e4 10.Nd2 Nb8 11.Nd5 Nd5 12.cd5+/-; C) 8...Bh6 9.Be2 (9.de5 de5 10.Nd5 Nd5 11.cd5 Bg7 12.Be2+= ; 9.c5 0-0 10.cd6 cd6 11.Rc1 Bg7 12.Be2+= ; 9.Rb1 Bg7 10.Be2 0-0 11.0-0 Nb6 12.Na4=) 9...0-0 10.0-0 Re8 11.de5 Ne5 12.Ne5+=; D) 8...Bg7 9.Be2 0-0 10.0-0 Re8 11.Qc2 ed4 12.ed4+=.

7.d4 Qe7 8.Nbd2 Bg7=+ 9.Be2 ed4 (9...0-0 10.0-0=+) 10.Bd4 (better 10.ed4!? Nb6 11.0-0+=) 10...0-0=+ 11.0-0 c5 (11...Nc5 12.Bc3=+) 12.bc6 bc6 13.Qa4 Ne5 (13...Nc5 14.Qa3=+ (14.Qc6? Bd7 15.Qb6 Rfb8 16.Bc5 Rb6 17.Bb6 Ne4-+)) 14.Rfd1 (14.Qa3 Re8=) 14...Bd7 (14...c5 15.Bc3=) 15.Qc2 White intends c5 (15.c5 Nf3 16.Bf3 dc5+=) 15...Rfb8 16.c5 Nf3 17.Bf3 d5 18.Qc3 Ne8 (18...Bf5 19.h3=) 19.Nb3 Exerts pressure on the isolated pawn (19.Bg7 Ng7 20.e4 Be6+=) 19...a4 (19...Bd4 20.ed4 a4 21.Re1=) 20.Nc1 (20.Bg7!? ab3 21.Be5+=) 20...Bd4=+ 21.ed4 Ng7 (21...Nc7 22.Nd3=+) 22.Re1 (22.Nd3 Qd8+=) 22...Qf6 (22...Ne6 23.Nd3+=) 23.Nd3+= Nf5 (23...Qd8 24.g3+=) 24.Ne5 Be8 25.Bg4 a3 26.Qd3 (26.Rab1!?+/-) 26...Nh6 27.Bd7 (better 27.Bh3+=) 27...Ra4?? (better 27...Rb2!? 28.Qe3 Bd7 29.Nd7 Qf5=+) 28.Be8?? (better 28.Nc6 Bd7 29.Nb8+-) 28...Re8+= 29.Nf3 (29.Qb3!? Raa8 30.Qb7+=) 29...Rb8= 30.Rab1 Rb2 (30...Rb1 31.Rb1 Nf5 32.Rd1=) 31.Rb2+= ab2 32.Qb3 Qf5 (32...b1Q!? 33.Rb1 Rc4+=) 33.Qb2 (better 33.h3+/-) 33...Qd3? (33...Qc8!?+/-) 34.h3 (better 34.Qb8 Kg7 35.Qe5 f6 36.Qc7 Nf7 37.h3+-) 34...Nf5?? (better 34...Kg7 35.Qb8 Ra2 36.Qe5 Kg8+-) 35.Qb8 Kg7 36.Qe5 (better 36.Re8 Qd1 (36...Nd4?? 37.Rg8 Kh6 38.Qf8 Kh5 39.g4; 36...Ra2?? 37.Rg8 Kh6 38.Qf4 g5 39.Qg5) 37.Kh2 Qf3 (37...Ra2 38.Rg8 Kh6 39.Qf4 g5 40.Qg5; 37...Nd4 38.Rg8 Kh6 39.Qf8 Kh5 40.g4) 38.gf3 Rd4 39.Rg8 Kh6 40.Qf8 Kg5 41.Qf7 Kh6+-) 36...f6 37.Qc7 Kh6 38.Qc6 Nd4 (38...Qa6 39.Qd5 Qa8 40.Qa8 Ra8+-) 39.Qd5 (better 39.Qa4 Nf3 40.gf3+-) 39...Nf3 (better 39...Ne2 40.Re2 Qd5-+ (40...Qe2? 41.Qd8 Qe6 42.Qf8 Kh5 43.c6+-)) 40.Qf3+= Qf3 41.gf3 Ra2 0-1. zembelek (2040) - ShockWave (2085), Rated Blitz game, lichess.org, 2015.

7.d4 Qe7 8.Be2 Bg7 9.0-0 (9.Nc3 0-0 10.0-0 Nb6 11.Rc1 Rd8 12.Na4+= ; 9.a3 e4 10.Nfd2 0-0 11.0-0 Re8 12.Nc3=; 9.de5 de5 10.Qc2 0-0 11.0-0 Rd8 12.e4+=) 9...e4 10.Nfd2 0-0 11.Qc2 Nb6 12.Nc3+=.

7.d4 Qe7 8.Be2 Bh6=.

7.d4 Bg7 A) 8.Be2 0-0 9.0-0 (9.Nbd2 Qe7 10.de5 de5 11.e4 Nc5 12.Ba3= ; 9.de5 Ng4 10.0-0 Nde5 11.Bd4 Re8 12.Nc3=) 9...Re8 10.Nc3 ed4 11.Nd4 Nc5 12.Nd5=; B) 8.Nc3 B1) 8...0-0 9.Be2 (9.Bd3 ed4 10.Nd4 Nc5 11.0-0 Be6 12.Na4= ; 9.Rb1 ed4 10.Nd4 Nc5 11.Be2 Be6 12.0-0= ; 9.de5 de5 10.Qc2 Qe7 11.e4 c6 12.Be2=) 9...ed4 10.Nd4 Nc5 11.0-0 a4 12.a3=; B2) 8...ed4 9.ed4 (9.Nd4 0-0 10.Be2 Nb6 11.0-0 a4 12.a3= ) 9...0-0 10.Be2 d5 11.c5 Re8 12.0-0=; C) 8.Nbd2 C1) 8...Qe7 9.Be2 e4 10.Ng5 h6 11.Nh3 Nb6 12.Nf4=; C2) 8...ed4 9.ed4 (9.Bd4 0-0 10.Be2 Qe7 11.0-0 Re8 12.a3= ) 9...Qe7 10.Be2 0-0 11.0-0 d5 12.Re1+=; C3) 8...a4 9.de5 (9.Be2 0-0 10.de5 Ng4 11.0-0 Nge5 12.Rb1= ; 9.Bd3 Qe7 10.Bc2 a3 11.Bc3 e4 12.Ng1= ; 9.Bc3 e4 10.Ng5 d5 11.Qc2 h6 12.Nh3=) 9...Ng4 10.Be2 Nge5 11.Ne5 de5 12.0-0=; C4) 8...0-0 9.Be2 (9.de5 Ng4 10.Be2 Nde5 11.Rb1 Re8 12.0-0= ) 9...Qe7 10.0-0 Re8 11.Qc2 a4 12.de5=; D) 8.de5 Ng4 9.Nc3 (9.Be2 Nde5 10.Bd4 0-0 11.0-0 Nf3 12.Bf3= ; 9.Bd4 de5 10.Bc3 0-0 11.Be2 Qe7 12.0-0=) 9...Nde5 10.c5 a4 11.a3 dc5 12.Qd8+=.

7.Be2 Bg7 8.0-0 0-0 9.Nc3 Re8 10.d4 ed4 11.Nd4 Nc5 12.a4 Nfe4 13.Nd5 Bd7 14.f3 Nf6 15.e4 Nh5 (15...Nd5 16.cd5 Qg5 17.Ra3=) 16.g3 (16.b6!? cb6 17.Qc2=) 16...c6=+ 17.Nc3 Bh6 (17...Bh3!? 18.Rf2 Bd4 19.Qd4 Nb3-/+) 18.Bc1= Bf8 (18...Bg7 19.Bb2=) 19.Be3 f5 (19...Bg7 20.Rb1=) 20.bc6 (20.Nb3 Bg7 21.Nc5 dc5=) 20...bc6= 21.Rb1 Bg7 22.Qd2 fe4 23.g4 Nf6 24.g5 Nh5 25.Kh1 (25.fe4!? Rb8 26.Rb8 Qb8 27.Rb1=) 25...ef3 (25...Qe7 26.f4 Bd4 27.Qd4=+) 26.Bf3=+ Rc8 27.Rbe1 (27.Kg2 Rf8-/+) 27...Qb6-/+ 28.Kg1 Nf4! 29.Rb1 (29.Bf4 Re1 Combination) 29...Nh3 30.Kh1 Qa6 31.Be2 Qa7 32.Bf3 Re3 33.Qe3 Ne6 34.Bg4 Nhg5 35.Nce2 (35.Be6?? Ne6 36.Ne4 Bd4-+ (worse 36...Qd4 37.Qd4 Bd4 38.Rb7-+; 36...Nd4?! 37.Nd6 c5 38.Nc8 Qa8 39.Kg1 Qc8 40.Rf2-+)) 35...Re8 (35...Nd4?! 36.Bd7 Qd7 37.Nd4=) 36.Nf5 Qe3 37.Ne3 Nf8 38.Bd7 Nd7 39.Rb3 Ne4 40.Ra3 Nec5 41.Ng3 Nb6 42.Kg2 h5 43.Rf3 Nba4 44.Ngf1 (44.h4 Rb8-+) 44...Ra8 45.Rg3 Kh7 46.Nd2 Nb2 Black plans a4 47.Nb3 Ne4 48.Rf3 a4 49.Rf7 Kh6 (49...ab3?! 50.Ra8 Kh6 51.Raa7=) 50.Re7 Be5 (50...ab3?! 51.Ra8 Be5 52.Rb7=) 51.Kg1 c5 (51...ab3?! 52.Ra8 Kg5 53.Rc8-/+) 52.Rf7 (52.Re6 Rf8 (52...ab3?! 53.Ra8 Nd3 54.Rb8-+) 53.Na5 Ng5-+) 52...Nd3 (52...ab3?! 53.Ra8 Nd3 54.Nd1-+) 53.Nd2 (53.Nd1 Bb2 54.Ra2 Rb8-+ (54...ab3?! 55.Ra8 Bd4 56.Kf1-+)) 53...Nd2 54.Rd3 Nb1 55.Rb7 (55.Rd1 Nc3 56.Re1 a3-+) 55...a3 56.Rb1 a2 57.Re1 a1Q 58.Ra1 Ra1 (58...Ra1 59.Rd1 Ra2-+; 58...Ba1 59.h4-+) 0-1. pcmvr (2870) - fersbery (2115), net-chess.com, 2009.

7.Be2 Bg7 8.Nc3 0-0 9.0-0 Qe7 10.d4 e4 11.Nd2 Re8 12.Qc2 Nf8 13.h3 h5 14.Na4 N8h7 15.c5 d5 16.Nb3 Ng5 17.h4 (better is 17.Bc3!?+/-) 17...Ngh7 18.Bc3 Ng4 19.g3 g5 20.hg5 Qg5 21.Kg2 (21.Ba5 Ne3 22.Qc3 Nf1 23.Rf1-+) 21...h4-/+ 22.Rh1?? (22.c6!? hg3 23.cb7 gf2 24.Bg4 Qg4 25.Kf2 Qf3 26.Kg1 Qe3 27.Rf2 Bb7 28.Bd2 Qg3 29.Rg2-/+) 22...hg3 (better is 22...Ne3 23.fe3 Qg3 24.Kf1 Re6-+) 23.fg3?? (better is 23.Bg4 Bg4 24.Nd2-+) 23…Ne3 (23...Ne3 24.Kf2 Nc2-+) 0-1. Huelle,Gunter - Hoffmann,Steffen (2050), Leipzig VfB op, 2006.

7.Be2 Bg7 8.d4 0-0 9.a4 Re8 (9...e4 10.Nfd2=) 10.Nc3 ed4 11.Nd4 Ne5 12.h3 c5 13.Nf3 Nfd7 14.Qd6 Nf3 15.gf3 Qh4 16.Qd2 Nb6 17.Ne4 ½-½. Coakley,J - Hergott,Deen (2365), Toronto CAN, 1988.

7.Be2 Bg7 8.d4 0-0 9.de5 Ng4 10.0-0 Nge5 11.Ne5 de5 (11...Ne5 12.Bd4=) 12.Nc3+= Nc5 (12...Qh4!?+=) 13.Ba3+/- b6 14.Bc5 bc5 15.e4 (15.Bf3 Rb8+/-) 15...Be6 16.Qd8 (16.Qb3 f5+/-) 16...Rfd8+= 17.Nd5 Bd5 (17...Rd7 18.g4+=) 18.cd5 f5 19.f3 (19.Rac1 Bf8+=) 19...Bh6 20.Bc4 (20.Kf2 Kg7+=) 20...Be3= 21.Kh1 Kg7 22.a4 Bd4 23.Rab1 Rab8 24.g3 h5 25.Kg2 fe4 (25...Kf6 26.h4=) 26.fe4 Rf8 27.Rf8 Rf8 28.Rf1 Rf1?? (better 28...Rd8+=) 29.Kf1+- (29.Bf1?! Kf6+/-) 29...Kf6 30.d6! cd6 31.b6 (31.b6 d5 32.b7 dc4 33.b8Q+-) 1-0. Leonenko,Maxim - Fuzik,Mykola (2030), Bogdanovich Mem Qual, 2021.

8.ed4 d5 9.Nc3 Be7 10.c5 0-0 11.Be2 Re8 12.0-0+=.

8.ed4 Bg7 9.Qe2 (9.Bd3 0-0 10.0-0 Re8 11.Re1 Re1 12.Qe1+=) 9...Qe7 (9...Kf8 10.Qe3 (10.Qd1= d5 11.Bd3 dc4 12.Bc4=) 10...Ng4 11.Qa3 Qe7 12.Be2+=) 10.Nbd2 (10.Qe7 Ke7 11.Bd3 Re8 (11...Nh5= 12.0-0+=) 12.0-0+=) 10...Qe2 (10...Qe6 11.Qe6 fe6 12.Bd3+=) 11.Be2 0-0 12.0-0 Re8 13.Rfe1 b6 (13...Nb6 14.Bd3=) 14.Bd3 Bb7 15.d5 (better 15.Rad1!?=) 15...Nd5-/+ 16.Bg7 Nf4 17.Bg6 hg6 18.Bd4 Ne2 19.Kf1 Nd4 20.Nd4 Nc5 21.N2f3 Nd3 22.Re3 Re3 23.fe3 Re8 24.Ke2 Nc5 25.g3 Kg7 26.Nd2 Bc8 27.Kf3 (27.Rg1 Bg4 28.N2f3 f6-/+) 27...Nd3 (27...Nd7 28.Ke2-/+) 28.Ke2 (28.Nc6 f6=+) 28...Ne5-/+ 29.N4f3 (29.Rc1 Ng4 30.Nf1 g5-/+) 29...Bg4 30.Rc1 Re6 (30...g5 31.a4-/+) 31.Rc3 g5 32.h3 Bh3 33.Ng5 Bg4 34.Kf2 Rf6 35.Kg2 Rf5 36.Nh3?? (better 36.Nge4-/+) 36...Bh3-+ 37.Kh3 Rf2 38.Ne4 (38.Nb3 Ra2 39.Nd4 a4-+) 38...Ra2 39.g4 (39.Rc1 Ra4 40.Nd2 Ra3-+) 39...Kg6 (39...a4 40.Rc1 Ra3 41.Nc3 Nc4 42.e4-+) 40.Kg3 f5 (40...Ra1 41.Nd2-+) 41.Nf2 Ra4 42.e4 (42.gf5 Kf5 43.e4 Kf6-+) 42...fe4 43.Ne4 Nc4 44.Rf3 (44.Nf2-+) 44...Ne5 45.Re3 (45.Rf4 Rb4-+) 45…Ng4! (45...Ng4 46.Re1 Nf6-+) 0-1. Diepstraten,Leo CM - Bartis,Gustavo Fernando, corr ICCF World Cup3 prel-055, 1974.

9.Nc3 0-0 10.Be2 Re8 11.0-0 Nc5 12.Nd5=.

9.Nbd2 0-0 10.Be2 Nc5 11.0-0 Re8 12.a3=.

9.Bd3 Nc5 10.Nc3 0-0 11.0-0 Re8 12.Re1=.

9.Be2 0-0 10.0-0 Nc5 11.Nc3 Re8 12.Nd5=.

9.Be2 0-0 10.0-0 Re8 11.Nc3 Nf8 (11...c5 12.bc6 bc6 13.Qd2=) 12.h4 (12.Nd5!?+=) 12...Ne6=+ 13.a4 Nd4 14.Nd4 h5 (14...Ne4 15.Ne4 Re4 16.h5=+) 15.Nd5 (15.Rb1=) 15...c5 (better 15...Nd5 16.cd5 Qh4-/+) 16.bc6+= bc6 17.Nf6 (17.Nc6 Qd7 18.Nf6 Bf6+=) 17...Bf6 (17...Qf6 18.Bf3 Bd7 19.Rb1= (worse 19.Bc6 Bc6 20.Nc6 Qa1 21.Qa1 Ba1 22.Ra1 Ra6-+)) 18.Rb1 (18.Nc6 Qb6 19.Nd4+= (worse 19.Qd6 Re6 20.c5 Qc6 21.Qc6 Rc6=+)) 18...Qc7 19.Bh5? (better 19.Bf3!? Bd7 20.Nb5 cb5 21.Ba8 Ra8 22.Qf3=+) 19...gh5-/+ 20.Qh5 Qd7 (better 20...Ra6-/+) 21.f4?? (better 21.Rfd1!?-/+) 21...Qg4 (better 21...Re3!? 22.Nf3 Rc3 23.Rbc1-+) 22.Qh6 Qg6 (better 22...Qh4!? 23.Qh4 Bh4-+) 23.Qg6-/+ fg6 24.Nc6 Bf5 (better 24...Re3 25.Rfd1 Bh4 26.Rd6 Bf5-+) 25.Rfe1?? (better 25.Rbd1 Re3 26.Rd6 Bh4 27.Ne5-/+) 25...Bb1 (25...Bh4!? 26.g4 Bb1 27.Rb1 Re3 28.g5-+) 26.Rb1 Re3 27.g3 (27.Rd1 Kf7 28.Rd6-+) 27…Ra6 (27...Ra6 28.Nb8 Bd4-+ (28...Rg3?! 29.Kh2 Rc3 30.Na6-/+)) 0-1. Prozorov – puicpuic, Rated Blitz game, lichess.org, 2013.

6.a4 c6 7.Nf3= cb5 8.cb5 Nbd7 9.Be2 Nc5 10.d4 Be7?? (better 10...Bb3 11.Qc1 Nce4=) 11.dc5+– dc5 12.Qd8 Rd8 13.Ne5 0-0 14.0-0 Nd5 (14...Ne4 15.Bf3 f5 16.Be4 fe4 17.Nc3+–) 15.Nc3 (15.Nc4 Rd7+–) 15...Nb4 (15...Nb6+–) 16.Bf3 (16.Rad1 Bb3 17.Rd8 Rd8+–) 16...Bf6? (better 16...f6 17.Ng4 h5 18.Bb7 hg4+–) 17.Ne4 Rd2 (17...Be7 18.Be2 f5+–) 18.Nd2 Be5 19.Be5 Nd3 (19...Rd8 20.Rfd1 Nd3 21.Ne4+–) 20.Bd6 (20.Bc7 c4+–) 20...Rd8 21.Bg3 (21.Bc7 Rd7 22.b6 c4+–) 21...Nb4 (21...Rd7 22.Ra3+–) 22.Ne4 Nc2 (22...Nd3 23.Rfd1 c4 24.Nc5+–) 23.Rac1 Bb3 24.Nc5 (24.Nc5 Ba4 25.Na4+–) 1–0. BeepBeepImAJeep (2620) – fulbluf (1610), lichess.org, 2015.

6.a4 Be7 7.Nf3 0-0 8.Nc3 (8.Be2 Nbd7=) 8...Nbd7 9.Be2 c6 (9...Nb6 10.d3=) 10.d4 e4 (10...cb5 11.Nb5 e4 12.Ng5=) 11.Nd2 d5 12.0-0 Re8 13.c5 Nf8 (13...Rc8 14.b6+=) 14.f3 ef3 15.Bf3 Qd7 16.b6 (16.Qe2 Rab8+=) 16...Ng4 17.Re1 Bg5 18.Nf1 Bf5 (18...Nf6 19.e4=) 19.e4 de4 20.Ne4 (20.Be4? Bf6 21.d5 Be4 22.Re4 Re4 23.Ne4 Bb2–+) 20...Be4 21.Be4 Nf6 22.Bf3 (22.Bc2!?=) 22...Ne6+= 23.Bg4 (23.Bc3 Rad8+=) 23...Ng4–/+ 24.Qg4 Bf6 25.Ne3 Red8 (25...Nc5!? 26.Nf5 Re1 27.Re1 h5+=) 26.Nf5= g6 (26...Nd4 27.Rf1 Qd5 28.Kh1+=) 27.Rad1 Kf8 28.Ne3 Nd4? (better is 28...Bd4!? 29.Kh1 Kg8+=) 29.Qf4+– (29.Qf4 Bg7 30.Kh1+–) 1–0. Rebber,Christian (2145) – Sjoestroem,Olle (2060), Werther Schloss op, 2000.

6.a4 Be7 7.Nf3 Nbd7 8.Be2 Nc5 (8...0-0 9.0-0=) 9.d4 ed4 10.Nd4 0-0 11.0-0 Nfd7 12.Nc3 Bf6 (12...Nb6 13.Ne6 fe6 14.Qc2=) 13.Qc2 (13.Nd5 Bd5 14.cd5 Nb6=) 13...Ne5 (13...Nb6 14.Ne6 fe6 15.Ra2=) 14.Rfd1 (14.Ne6 fe6 15.Rfd1 Rb8=) 14...Qe7 (14...Bc4!? 15.Rab1 Be2 16.Nce2 Rc8=+) 15.Ne6 (15.Nd5 Bd5 16.cd5 Rfe8+=) 15...fe6= (15...Ne6? 16.Nd5 Qd8 17.Nf6 Qf6 18.f4 Nf4 19.ef4 Qf4 20.Be5 Qe3 21.Kh1 Qe5 22.Bf3+–; worse 15...Qe6 16.Nd5 Bd8 17.Bd4+–) 16.Ne4 Ne4 17.Qe4 Ng6 18.Qb7?? (18.Bd4 Qf7 19.Bg4+=) 18...Rab8?? (better 18...Bb2 19.Rab1 Rab8–+) 19.Bf6+– gf6 (19...Qf6!? 20.Qf3 Qh4+–) 20.Qa6 Ra8 21.Qc6 Ne5 22.Qe4 f5 23.Qc2 (23.Qd4 Nf7+–) 23...Kh8 (23...f4!?+–) 24.f4 Ng4 25.Bf3 Ne3? (better 25...Ra7+–) 26.Qd3 (better 26.Qc3 e5 27.Qe3+–) 26...Nd1= 27.Rd1 Qf6 (better 27...Rad8=) 28.Ba8+– Ra8 29.c5 (29.b6 cb6 30.Qd6 Rc8 31.Qb6 Rc4 32.Qa5 Kg7+– (32...Rf4?? 33.Rd8 Kg7 34.Qc7 Qf7 35.Qf4+–)) 29...d5 (29...dc5 30.Qe3+–) 30.Qd4 (30.Qd2!?+–) 30...Qd4+= 31.Rd4 Kg7 32.Kf2 Kf6 33.Kf3 (better 33.Rd2+–) 33...e5? (better 33...Rd8!?+=) 34.fe5 (34.Rd5 e4 35.Ke3 h5+–) 34...Ke5 35.Rd1 (better 35.Rh4!? Rh8 36.Rh6+–) 35...Rg8 36.Re1 Kd4 (36...Kf6 37.b6+=) 37.Re7 (37.c6 Rg7 38.Re8 Kc5+=) 37...Kc5+= 38.Rc7 Kb4 39.b6 (39.Rh7 Ka4 40.b6 Kb5=) 39...Ka4 (39...Rb8 40.b7 Ka4 41.Rh7=) 40.b7 (40.Rh7?! Kb5=) 40...Rb8 41.Kf4 (41.Rh7 Kb3 42.Re7 a4=+) 41...Kb5 42.Kf5 Kb6 (42...a4!? 43.Rh7 a3=+) 43.Rh7+= Rb7 44.Rh6 Kc5 45.Ke5 (45.Ra6 Kb5 46.Rd6 Kc4=+) 45...a4 (45...Re7 46.Kf5 Ra7 47.Rh3–/+) 46.Rh3 (better 46.Ra6 Rb4 47.Ra5 Kc4 48.g4=+ (48.Rd5?? Rb5 49.Rb5 Kb5–+)) 46...a3?? (better 46...Re7 47.Kf4 Ra7–+) 47.Ra3+= Re7 48.Kf4 (48.Kf4 d4 49.g4+=) 1–0. RichardSommer (2130) – mfz (2005), lichess.org, 2020.

6.Nc3 c5 7.h3 Be7 8.Nf3 h6 9.Be2 0-0 10.Qc2 b6 11.0-0 Nbd7 12.d3 Re8 13.e4 Nf8 14.Nh2 Ng6 15.Bc1 Nh7 16.f4 ef4 17.Bf4 Nf4 18.Rf4 Bg5 19.Rf3 Bf6 20.Raf1 Bd4 21.Kh1 Ng5 22.Rg3 Be5 23.Re3 Bd4 24.Rg3 Be5 25.Re3 Bd4 26.Rg3 ½–½. typ48 – janvaljan (1620), kurnik, 2012.

6.Nc3 Be7 7.Be2 0-0 8.Nf3 h6 9.d4 Nbd7 10.d5 Bf5 11.Nd2 e4 12.0-0 Re8 13.Na4 Bf8 14.Rc1 Bg6 15.Nb3 Nc5 16.Nd4 Nfd7 17.Bg4 Ne5 18.Bh3 Qg5 19.Nc5 dc5 20.Ne2 Nf3 21.Kh1 Bd6 22.gf3 ef3 23.Ng3 Qh4 24.Bd7 Re7 25.Bc6 (better is 25.Bg7!? Rd7 26.Bb2 Bg3 27.fg3=) 25...bc6–/+ 26.dc6? (26.Rg1 cb5 27.cb5 Re4 28.Qf3 Ra4–/+) 26...Rae8 (26...Re3 27.Qd6 cd6 28.fe3–+) 27.b6? (27.Rg1!?–/+) 27...Be4 (better is 27...Re3 28.Qd6 Qh3–+) 28.b7?? (better is 28.Rg1 g6 29.Qd2–/+) 28...Bg3 (28...Bc6?! 29.Rg1 g6 30.Qb3–+) 29.fg3 f2 30.Qf3 Bf3 0–1. typ48 – danuska1201 (1655), playok.com, 2012.

6.d3 c6 7.Nf3 =.

6.d3 Nbd7 7.Nf3 h6 (7...Be7 8.Be2=) 8.Be2 e4 (8...Be7!?=) 9.de4+= Ne4 10.0-0 Ndf6 (10...Nb6 11.Qc2 Nc5 12.Nd4+=) 11.Nbd2 (11.Nd4 Bd7+/-) 11...Nc5 (11...Nd2 12.Qd2 Be7 13.Nd4+=) 12.Nd4+/- Bd7 13.Bf3 (13.N4b3 Nb3 14.ab3 Be7+/-) 13...Be7 (13...a4 14.Ne2+=) 14.N4b3+/- Nb3 15.Nb3 (15.ab3 d5+/-) 15...Ra7 (15...a4 16.Nd2 Bc8 17.Bd4+=) 16.Re1 (16.Bc3 a4 17.Na5 Qb8+/-) 16...0-0 (16...a4 17.Nd2+=) 17.e4 (17.Bd4 b6+/-) 17...Be6 18.Nd2 (18.Qd3 Ra8+=) 18...Bc4?? (better is 18...Nd7=) 19.Nc4+– 1–0. Hasler,Ulrich – Rotter,W, corr ICCF, 1976.

6.Be2 c5 7.a4 Nbd7 8.d4 e4 9.dc5 dc5=+ 10.Nd2 Qc7 11.Qc2 Bf5 12.Bd1 Bd6 13.g3 Ne5–/+ 14.Ne2 Nd3–+ 15.Kf1 Bh3 16.Kg1–/+ Nb2 17.Qb2 Be5 18.Nc3 Qd7 19.Rc1 Rd8–+ 20.Rc2? Qd3 21.Be2 Bc3 22.Bd3 Bb2 23.Rb2 Rd3 24.Nb1 Rd1# 0–1. Hasler,Ulrich – Rodgard,Bjarne, corr ICCF–WC VIII/IX, 1991.

6.Be2 Nbd7 7.d4 Bf5 8.Nf3 ed4 9.ed4 d5 10.c5 Bg4 11.0-0 Ne4 12.Re1 f5 13.Nbd2 Be7 14.h3 Bf3 15.Bf3 0-0 16.Ne4 de4 17.Qb3 Kh8 18.Be2 a4 19.Qc2 a3 20.Bc3 Rc8 21.Qb3 Ra8 22.Bc4 b6 23.c6 Nb8 24.Rad1 Bh4 25.d5 Ra7 26.Bb4 Be7 27.Bc3 (Better is 27.d6 Bd6 28.Be6+/-) 27...Rf7?? (Better is 27...Bh4=) 28.d6!+– Rf8 (28...Bd6 29.Bf7) 29.de7 Qe7 30.Bb4 Qf6 31.Bf8 Qf8 32.Rd5 g6 (32...Ra5+–) 33.Qc3 Kg8 (33...Qf6 34.Qf6 Kg8 35.Rf5) 34.Rd7 Qf7 35.Bf7 Kf8 36.Qh8# 1–0. Bonetti,Shane – MacChess 5.0, 2000.

6.Be2 Be7 7.d4 ed4 8.Bd4 =.

6.Nf3 b6 7.d4 e4 8.Nfd2 d5 9.cd5 Nd5 10.Ne4 Bf5 11.Nbc3 Bb4 12.a3 Bc3 13.Nc3 0-0 14.Be2 Nc3 15.Bc3 Be4 16.0-0 Qg5 17.Bf3 Bf3 18.Qf3 Nd7 19.a4 Nf6 20.Rac1 Nd5 21.Bd2 Qg6 22.Qd5 h6 1–0. vihavald (1645) – zihnija, kurnik, 2014.

6.Nf3 c6 7.a4 Be7 8.d4 0-0 (8...e4 9.Nfd2=) 9.de5+= Ne4 (9...de5 10.Qd8 (worse 10.Ne5 Qd1 11.Kd1 Ne4=+) 10...Rd8 11.Be5=) 10.ed6 (10.Nbd2 Nd2 11.Qd2 d5 12.cd5 Bd5+=) 10...Bd6 11.Bd3 (11.Nbd2 Bb4+=) 11...Bb4= 12.Ke2 Nc5 13.Bd4 (13.Nd4 Qh4 14.Kf1 Rd8=+) 13...cb5 (13...Nd3 14.Qd3 (14.Kd3? c5-+) 14...c5 15.Bc3 Qd3 16.Kd3 Rd8 17.Kc2 Bc4 18.Nbd2 Bd3 19.Kb2=+) 14.cb5 (14.Bc5!? Bc5 15.cb5+=) 14...Nb3 15.Nbd2 Na1 (15...Bd2 16.Nd2 Nd4 17.ed4=+) 16.Qa1 f6 17.Rd1 Qe7 (17...Nd7 18.Be4 Rb8 19.Kf1=+) 18.Ne4 (18.Qb1 f5=) 18...Nd7=+ 19.Bb1 (19.Kf1 Rad8=+) 19...Rac8 (better 19...Bc4 20.Bd3 Bd3 21.Kd3 Qe6-/+) 20.Qb2?? (better 20.Kf1-/+) 20...Bc4-+ 21.Bd3 Qe4 22.Bc4 Rc4 23.Qb3 Qc2 24.Qc2 Rc2 25.Kf1 Rfc8 26.Ba1 (26.Kg1 Ra2-+) 26...Nc5 (better 26...Rc1 27.Rc1 Rc1 28.Ke2 Ra1 29.h3-+) 27.Nd4 Ra2 28.Nf5 (28.Rc1 Re8 29.Bc3 Nd3-+) 28...Ne4 (28...Nb3!? 29.Bf6 gf6 30.g4-+) 29.Ne7 (29.f3 Rcc2 30.Nh4 Nd2 31.Kg1-+) 29…Be7 (29...Be7 30.f3 Nd2 31.Kg1 Rcc2-+) 0-1. zembelek (2035) - quicksort96 (1925), Rated Blitz game, lichess.org, 2014.

6.Nf3 Nbd7 7.Nc3 Be7 8.Be2 0-0 9.d4 Re8 10.a4 ed4 11.Nd4 Nc5 12.0-0 Nfd7 13.f4 Nb6 14.Ne6 Ne6 15.Rf3 Nc5 16.Nd5 Nd5 17.Qd5 Bf6 18.Bf6 Qf6 19.Ra2 Qc3 20.Qd4 Na4 21.Qd5? Nc5 22.e4 Qb4 23.Bd3 Qe1 24.Bf1 Qe4 25.Qd1 b6 26.Re2 Qf5 27.Rd2 Re4 28.Rd5 Qf6 29.g3 Rae8 30.Kf2 Qb2 31.Rd2 Rd4 32.Rb2 Rd1 33.Be2 Ne4 34.Kg2 Rd2 35.Rd2 Nd2 36.Rf2 Re3 37.Bg4 Nc4 38.Rc2 Re4 39.Kf3 Rd4 40.Re2 Kf8 41.Bd7 g6 42.Re8 Kg7 43.Rc8 a4 44.Rc7 a3 45.Be6 a2 46.Rf7–/+ Kh6 47.Ra7 Rd3 48.Ke2?? Ra3 49.Ra3–/+ Na3 50.Ba2 Nb5 51.Kd3 Kg7 52.Bc4 Nc7 53.Kd4 Kf6 54.g4 h6 55.h3 Ne6 56.Ke4–/+ Nc7 57.Kd4 Ke7 58.h4 Kf6 59.Bd3 Ne6 60.Ke3 d5 61.Bb5 g5 62.fg5 hg5 63.h5 Ke5 64.Bd3 d4 65.Kf3 Nc5 66.Bc4 Ne4 67.h6+= Nf6 68.Bd3 b5 69.h7 Nh7 70.Bh7 b4 71.Bc2 Kd5+/- 72.Bb3 Ke5 73.Bc4 Kd6 74.Ke4 Kc5 75.Bd3?? b3+= 76.Kf5 Kb4 77.Ke5 Kc3 78.Ke4 b2 79.Bb1 Kc4 80.Bc2 Kc5? 81.Bd3+– Kd6 82.Kd4 Ke6 83.Kc3 Ke5 84.Kb2 Kd4 85.Bf5 Ke5 86.Kc3 Kd5 87.Kd3 Ke5 88.Kc4 Kd6 89.Kd4 Ke7 90.Ke5 Kf7 91.Kd6 Kf6 92.Bc8 Kf7 93.Ke5 Ke7 94.Kf5 Kd8 95.Ba6 Ke7 96.Kg5 Kf7 97.Kh6 Kg8 98.g5 Kh8 99.g6 Kg8 100.g7 (100...Kf7 101.Bc4 Ke7 102.g8Q Kd6 103.Qd5 Kc7 104.Qc5 Kd7 105.Kg7 Ke8 106.Qc6 Ke7 107.Qc7 Ke8 108.Bf7#) 1–0. Dumontelle,Joe – Kiviaho, 1979.

6.Nf3 Nbd7 7.Be2 Be7 8.0-0 0-0 9.d4 e4 10.Nfd2 c6 11.Nc3 =.

6.Nf3 Nbd7 7.Be2 Be7 8.0-0 0-0 9.d4 e4 10.Nfd2 d5 11.Nc3 c6 12.a4 Rc8 13.Qb3 c5 (13...Re8!?=) 14.cd5+= Bf5 15.dc5 Nc5 16.Qc2 (16.Qa2 Qc7+=) 16...Nd3 (16...Nd5 17.Rfd1=) 17.Qb3 (better is 17.Bd3!? ed3 18.Qb3+=) 17...Nb2+= 18.Qb2 Bb4 (18...Nd5!? 19.Nd5 Qd5+=) 19.Rac1= Qd6 (19...Bc3 20.Rc3 Rc3 21.Qc3 Nd5 22.Qe5 Ne3 23.fe3 Qd2 24.Qf5 Qe2 25.Qe4=) 20.Rc2 (20.Nc4 Qe7+/-) 20...Rc5 (20...Nd5 A) 21.Nde4? Qg6 22.Bh5 Qh5 23.Nd5 Be4 24.Rc8 Rc8 (24...Qd5?! 25.Rf8 Bf8 26.f3–/+; 24...Bd5?! 25.Rf8 Bf8 26.Qd4–/+) 25.Nb4 ab4–+; B) 21.Nc4 Rc4 22.Bc4 Nc3 23.Rc3 Bc3 24.Qc3=) 21.Na2 (21.Nc4 Qd8 22.d6 Be6+=) 21...Rd5 (21...Rc2 22.Qc2 Bd2 23.Qd2 Qd5 24.Qd5 Nd5 25.Bc4=) 22.Nb4 Qb4 23.Bc4 (better is 23.Qb4 ab4 24.Rb1+=) 23...Rd2? (better is 23...Qb2 24.Rb2 Rc5=) 24.Qb4+– ab4 (better is 24...Rc2 25.Qb3 Rd2+–) 25.Rd2 Rc8 26.Rc1 (26.Rb1 Be6 27.Be6 fe6+–) 26...Kf8 27.Rdc2 Rd8 28.Rb1 Nd5? 29.Bd5 Rd5 30.h3 h5 31.Rb4 Rd1 32.Kh2 h4 33.g4 hg3 34.fg3 Rd3 35.Re2 Ke7 36.g4 Bg6 37.Kg3 Ke6 38.Kf4 f5 39.gf5 Bf5 40.h4 g6 41.Ra2 Rd1 42.a5 Rf1 43.Kg5 Kd6 44.a6 Be6 45.a7 Ba2 46.a8Q Rf5 47.Kg6 Rc5 48.Qd8 Ke5 49.Rd4 Bd5 50.Qf6 1–0. marvis (1650) – ahuramazda, playok.com, 2012.

6.Nf3 Nbd7 7.Be2 Be7 8.0-0 0-0 9.d4 e4 10.Nfd2 d5 11.Nc3 c6 12.cd5 cd5 13.Qb3 Nb6 14.a4 (14.Ba3 Ba3 15.Qa3 Bg4=) 14...Bb4 (14...Rc8 15.Rac1=) 15.Ba3 Qd6 16.Rfc1 Rfc8 17.Bb4 (17.Ra2 Rc7+=) 17...Qb4 (17...ab4 18.Na2 Ra4 19.Rc8 Bc8 20.Rb1+=) 18.Qb4 (better is 18.Rab1!?=) 18...ab4–/+ 19.Nd1 Rc1 20.Rc1 Na4 (20...Ra4 21.Rc7–/+) 21.Ra1 Nb6 22.Ra8 Na8 23.Nb3 b6 24.f3 Nc7 25.fe4 (25.Nf2 ef3 26.gf3 Bd7–/+) 25...Ne4–+ 26.Bf3 (26.Nc1 Bd7–+) 26...Nc3 27.Nf2 N7b5 (27...Bf5 28.g4 Bc2 29.Nc1–+) 28.Nd3 Ne4 (28...g5 29.h3–+) 29.Nb4 Nbc3 30.Kf1 Kf8 31.Ke1 Ke7 32.Nd2 g5 33.Ne4 de4 34.Be2 Kd6 35.Kd2 Ne2–+ 36.Ke2 h5 37.Kf2 f5 38.g3 b5 39.Ke2 Bc4 40.Kd2 Kc7 41.Kc3 ½–½. gtate (1930) – smyslovvchess (2050), net–chess.com, 2004.

7.d4 e4 8.Nfd2 c6 9.Nc3 d5 10.Qa4 0-0 11.Ba3 cb5 12.Nb5 Nc6 13.Be7 Qe7 14.a3 dc4 15.Bc4 Bc4 16.Nc4 Nd5 17.0-0 f5 18.Qb3 a4 19.Qa2 Kh8 20.Rac1 Rf6 21.Ne5 Rd8 22.g3 (better is 22.Qb2!?=) 22...Ne5–/+ 23.de5 Qe5 24.Rfd1 Rff8 25.Qc2 Ne3 26.Rd8 Rd8 27.Qc8 Qe8 (27...Rc8 28.Rc8) 28.Qb7 Ng4 29.Qb6 e3 30.fe3 h6 (worse is 30...Ne3 31.Nd6 Rb8 32.Qa7=) 31.e4 Rb8 (31...fe4?! 32.Nd6 Rb8 33.Qa7=) 32.Nd6 Rb6 33.Ne8 fe4 34.Re1 Re6 35.Nc7 Re5 36.h3 Nf6 37.Re3 Rc5 38.Ne6 Rc4 39.Nf4 g5 40.Ng6 Kg7 41.Ne7 h5 42.Nf5 Kg6 43.Nd6 Rc6 44.Nb5 Rc5 45.Nd6 Rd5 46.Nc8 Rd1 47.Kf2 Kf5 48.Ne7 Ke6 49.Nc6 Rc1 50.Nd4 Kd5 51.Nb5 Rc2 52.Ke1 Rb2 53.Nc3–/+ Kd4 54.Na4 Rb1 55.Kf2 Nd5 56.Re1 Rb3?? 57.Re4+/- Ke4 58.Nc5 Kd4 59.Nb3 Kc3 60.Nc5 g4 61.h4 Kc4 62.Ne6 Kb3 63.Ng7 Ka3 64.Nh5 Kb4 65.Nf4 Nf6 66.Ke3 Kc4 67.Ng6 Nh5 68.Kf2 Kd4 69.Nf4 Nf6 ½–½. Pandurevic,Miro – Majeric,Zoran (2335), Velika Gorica, 2002.

7.d4 e4 8.Nfd2 d5 9.cd5 Bd5 10.Nc3 0-0 11.Be2 c6 12.bc6 bc6 13.Qc2 Nbd7 14.Rb1 Rb8 15.0-0 Bd6 16.h3 (worse is 16.Nde4 Ne4 17.Ne4 Bh2 18.Kh2 Qh4 19.Kg1 Qe4 (19...Be4?! 20.Bd3 Bd3 21.Qd3=) 20.Qe4 Be4–/+; 16.Nd5?! cd5 17.Rfc1 Rc8=) 16...h6 (better is 16...Qe7!?=) 17.Nde4+/- Ne4 18.Ne4 Bc7 19.Ba3 Re8 20.Rb8 Be4?? (better is 20...Bb8 21.Bd3 Nb6+–) 21.Rd8 (21.Rd8 Bd8 22.Bd3 Bd3 23.Qd3+–) 1–0. pcmvr (2850) – kode (2100), net–chess.com, 2011.

7.Be2 0-0 8.0-0 Nbd7 9.Qc2 h6 (9...Bg4 10.Nc3=) 10.d4+= e4 (10...c6 11.de5 Ne5 12.Ne5 de5 13.bc6+=) 11.Nfd2 Bf5 (11...c6 12.Ne4 cb5 13.Nf6 Bf6 14.cb5+=) 12.Nc3+/- c6 (12...d5 13.cd5 (worse is 13.Nd5 Nd5 14.cd5 Nf6+=) 13...Nb6 14.Nce4 Ne4 15.Ne4+/-) 13.bc6 bc6 14.Nde4 Ne4 15.Ne4 Bg6 (15...Rb8 16.Bd3+/-) 16.Bd3 (16.f4 f5 17.Ng3 Rb8+/-) 16...Rb8 (16...d5 17.Ng3 Bd3 18.Qd3+/-) 17.Rfb1 c5 (17...d5 18.Ng3 Bd3 19.Qd3+/-) 18.Ng3 (18.Bc3 Qc7+/-) 18...Bd3+/- 19.Qd3 cd4 (19...Qc7 20.Bc3+/-) 20.ed4+– Bf6 (20...Re8 21.Nf5 Bf8 22.Bc3+–) 21.Ba3 Rb1 (21...Nc5 22.dc5 Ba1 23.Ra1 dc5 24.Qc3+–) 22.Rb1 (worse is 22.Qb1 Bd4 23.Bb2 Bf2 24.Kf2 Qb6 25.Kf1 Rb8+=) 22...Nb8 (22...Nb6 23.Nf5 Nc8 24.Qf3+–) 23.Nf5 Nc6 24.Bd6 Re8 25.d5 Ne5 (25...Nb4 26.Bb4 ab4 27.d6+–) 26.Qc2 Nd7 (26...Qa8 27.h3+–) 27.c5 Be5 (27...h5 28.c6 Nb6 29.g3+–) 28.c6 Bd6 (28...Bf6 29.c7 Qa8 30.Bf4 Qd5 31.Nd6+–) 29.Nd6 (29.Nd6 Nf6 30.Ne8 Ne8 31.g3+–; 29.cd7?! Qd7 30.g3 Bb4+/-) 1–0. Prince W – Hovla1, ChessWorld.net, 2015.

7.Be2 0-0 8.0-0 Nbd7 9.d4 e4 10.Ng5 Bf5 11.f3 Bg6 12.Nd2 ef3 13.Bf3 d5 14.Nh3 Bd3 15.Rf2 Bb4 16.Qb3 Bf5 17.cd5 Bd2 18.Rd2 Nb6 19.d6 a4 20.dc7 Qc7 21.Qc3 Qc3 22.Bc3 Bh3 23.gh3 Nbd5 24.Rc1 Rfe8 25.Rd3 Ne4 26.Be1 f5 27.Rc5 Red8 28.Be4 fe4 29.Ra3 b6 30.Rc4 Rf8 31.Bd2 Rf5 32.Raa4 Raf8 33.Rc1 Rg5 34.Kh1 Rf2 35.Bb4 h6 36.Bd6 Ne3 37.Bg3 Rf3 38.Rb4 Rgf5 39.Rbb1 Nd5 40.a4 Ra3 41.Ra1 Rff3 42.h4 Rfc3 43.Rg1 Ra1 44.Ra1 Rc2 45.Kg1 Rd2 46.Be1 Rb2 47.Bg3 Kf7 48.Kf1 Ke6 49.Re1 Kf5 50.Be5 g5 51.hg5 hg5 52.Re2 Rb4 (53.Rf2 Nf4–/+) 0–1. Zylla,Johannes (2135) – Pischner,Rainer (2205), BdF T, 2004.

7.Be2 0-0 8.0-0 h6 9.d4 e4 10.Nfd2 d5 11.Qb3 (11.cd5 Bd5 12.Nc3 Re8+=) 11...c6 (11...a4 12.Qc2=) 12.a4 Nbd7 13.Nc3 Nb6 (13...Rc8 14.Rab1=) 14.Ba3 White prepares c5 (14.c5 Nbd7+=) 14...Ba3 15.Ra3 Qd7 (better is 15...dc4!? 16.Qa2 Qd7=) 16.c5 Nc8 17.bc6 bc6 18.Rb1 Ra7 19.Qb2 Ne7 20.Rb3 Rc8 21.Rb7 Rc7 22.Rc7 Rc7 23.Qb6 Ra7+= 24.Nb3 Nc8 25.Qa7?? Qa7–+ 26.Nd2 g5 27.g3 g4 28.Kg2 h5 29.Rb2 Kg7 30.Bf1 Nd7 31.Be2 Nc5! 32.dc5 Qc5 33.Rb3 Nd6 34.Ndb1 Nf5 Black plans d4 35.Rb7 d4 36.Ne4 Bd5 37.f3 Ne3 38.Kf2 Be4 39.fe4 d3! 40.Bd3 Nc2 41.Ke2 Qe3 42.Kd1 Qd3 43.Nd2 Ne3 44.Ke1 Ng2 45.Kd1 c5 46.Rc7 Ne3 Black prepares the advance c4 47.Ke1 c4 48.Rc5 c3 49.Nb3 Qd1 50.Kf2 Qf3 51.Ke1 c2 52.Kd2–+ Nf1 53.Kc2 Qf2 54.Kc3 Qh2 55.Ra5 Qg3 56.Kc4 Ne3 57.Kb4 Qe1 58.Ka3 Nc2 59.Kb2–+ Nb4 60.Rb5 Qe4 61.a5 Nd3 62.Kc3 Ne5 63.Rc5 g3 64.a6 Nd7 65.Rc4 Qe3 66.Kb4 g2 67.a7 Qa7 68.Rc5 Qc5! 69.Nc5 Nc5 70.Kc5 g1Q (70...g1Q 71.Kc4 h4 72.Kd3 h3 73.Ke2 h2 74.Kd3 Qc5 75.Ke2 h1Q 76.Kd2 Qd4 77.Ke2 Qhd1) 0–1. carocan (1805) – feniksi (1660), kurnik, 2011.

6.a4 b6 7.Nf3 Bb7 (7...c6 8.d4 e4 9.Nfd2=) 8.Be2 0-0 9.0-0 c5 10.d4 ed4 (10...cd4 11.ed4 e4 12.Nfd2=) 11.ed4 d5 12.dc5 Bc5 13.Nbd2 Nbd7 14.Bf6 (14.Rc1!?=) 14...Nf6 15.cd5 Qd5 16.Bc4 Qh5 17.Qb3 Rad8 18.h3 Qg6 19.Nh4 (19.Rad1 Rd7=+) 19...Qg5 (19...Qh6 20.Ndf3-/+) 20.Ndf3 (20.Nhf3 Qf4 21.Rad1 Rd7-/+) 20...Qg3 (20...Qf4 21.Bd3 Be4 22.Be4 Ne4 23.Ra2-+) 21.Kh1 (21.Rad1 Rd1 22.Qd1 Ne4-/+) 21...Qc7 (21...Qf4 22.g3 Qc7 23.Ng2-+) 22.Nf5 (22.Rac1-/+) 22...g6 (22...Qf4 23.Ng3 Bf3 24.gf3 Bf2 25.Ne2-+) 23.Ng3 (23.Qc3 Be4=) 23...Kg7 (23...Bf2 24.Rf2 Qg3 25.Qe3-/+) 24.Ng5 (24.Rae1 Bd6 25.Ng5 Bf4-/+) 24...h6 (better 24...Qf4 25.Nf7 Rd5-/+) 25.f4?? (better 25.Nf3-/+) 25...hg5-+ 26.fg5 Ne4 (26...Ng4 27.Rae1 Rh8 28.Rf7 Qf7 29.Nh5 (29.Bf7?? Rh3) 29...Rh5 30.Bf7-+) 27.Ne4 Be4 28.Rae1 Bb7 (better 28...Qe5 29.Qf3 Bf3 30.Re5-+) 29.Rf6 (29.Re2 Rd7-+) 29...Rd6 (better 29...Rd2 30.Rf3 Bb4 31.Ref1 Bf3 32.Rf3-+) 30.Rd6 Qd6 31.Rf1 (31.Qc3 f6 32.Rf1 Be4-+) 31...Qd2 (better 31...Qe5 32.Qd1 Qg5 33.Qc2-+) 32.Qg3 Bd6 33.Qg4 Bd5 34.Rd1 (34.Bd5 Qd5 35.Rd1-+) 34...Qf4 (34...Re8 35.Bf1 Re1 36.Re1 Qe1 37.Qd4 Be5 38.Qd3 Be4 39.Qe2 Qg3 40.Kg1 Bd4 41.Qe3 Be3 42.Kh1 Qh3) 35.Qf4+= Bf4 36.Rd5 (36.Bd5 Bg5 37.Kg1 Rc8=) 36...Be3 (36...Rc8!? 37.Rd4 Bg5=) 37.Rd7 Bc5 (37...Bg5 38.g3+=) 38.h4 (better 38.g3+-) 38...Bf2+= 39.g3 (39.Rb7 Bh4 40.g3 Bg3 41.Rb6 Bh4+=) 39...Bg3= 40.Rd4 (40.Rb7 Bh4 41.Rb6 Bg5=) 40...Bf2 (40...Rh8!? 41.Rd7 Rh4 42.Kg2 Rc4 43.Kg3 Ra4-/+) 41.Rf4= Bc5 (41...Bg3 42.Rf6=) 42.Kg2 Bd6 (42...f6!?=) 43.Rf6+/- Bc5 44.Kf3 Bb4 (44...Bg1+/-) 45.Rf4 (better 45.Rb6 Rc8 46.Bd5 Rc3 47.Ke4 Re3 48.Kd4+-) 45...Bc5 46.Rf6 Bg1 (46...Bb4 47.Rb6 Be1 48.Ra6 Bh4 49.Ra5+-) 47.Ke4 (47.Bd5 Bc5+/-) 47...Bc5 (47...Re8 48.Kf4 Re7 49.Kf3+=) 48.Kd5 (48.Kf4 Bd4 49.Rd6 Bf2+=) 48...Bg1 49.Kc6?? (49.Ke5 Re8 50.Kf4 Re7+=) 49...Bc5 (better 49...Rc8 50.Kb7 Rc4 51.Rb6 Bb6 52.Kb6 Ra4-+) 50.Kb7+/- Bg1 51.Rb6 Bc5? (better 51...Bb6 52.Kb6 Rc8+/-) 52.Kc6 (52.Kc6 Bb6 53.Kb6+/-) 1-0. zembelek (2005) - dejv (1915), Rated Blitz game, lichess.org, 2014.

6.a4 c6 7.Nc3 0-0 8.Nf3 e4 9.Ng1 (9.Nd4 d5=) 9...d5 10.d3 Bb4 11.Qb3 (11.de4 Ne4 12.Rc1 Qf6-+) 11...Be6-/+ 12.0-0-0 (12.d4 dc4 13.Bc4 Bc4 14.Qc4 Nbd7=+) 12...Qb6 13.d4 (13.de4 de4 14.bc6 Qc6-/+) 13...cb5 (13...dc4 14.Bc4 cb5 15.Be6 fe6 16.Nb5-+) 14.c5 (14.cb5!? Nbd7 15.Kd2-+) 14...ba4-+ 15.Na4 (15.cb6?? ab3 16.Nb5 a4-+) 15...Qc7 16.Ne2 (16.Bc3-+) 16...Ra6?? (better 16...Ng4 17.Nb6 Nc6 18.Na8 Ra8-+) 17.Nf4 (17.Nec3 Bc3 18.Bc3 Ra8-/+) 17...b6 (better 17...Ra7!?-+) 18.Ba6=+ Na6 19.Nb6 Can d5 get defended? 19...Rb8 (19...Nc5 20.dc5 Qc5 21.Kb1 Qb6 22.Bf6 gf6 23.Nd5 Bd5 24.Rd5=+ (24.Qd5?? Bc3 25.Qb5 Qb5 26.Ka2 Qb2)) 20.Kb1 (better 20.Ne6 fe6 21.Qc2=+) 20...Nd7?? (20...Bc5 21.dc5 Nc5 22.Nfd5 Bd5 (22...Nb3?? 23.Nc7 Nc5 24.Ne6 fe6 25.Rd6+-) 23.Nd5 Nd5 (23...Nb3? 24.Nc7 Ng4 25.Na6+-) 24.Qd5 Na4+=) 21.Nbd5+/- (21.Nfd5 Qb7 22.Qa4 A) 22...Bd5? 23.Qd7 (23.Nd7? Bc6 24.Qc6 Qc6 25.Nb8 Nb8-+) 23...Bb3 24.Qb7 Rb7 25.Rdg1+-; B) 22...Nac5 23.dc5 Bc5 24.Qa5 f6+/-) 21...Qc6?? (better 21...Bd5 22.Nd5 Qd8+/-) 22.Ne7+- (22.Ne7 Kf8 23.Nc6 Bb3 24.Nb8 Ndb8 25.Rc1+-) 1-0. zembelek (2115) - winsea (1965), Rated Blitz game, lichess.org, 2014.

6.Nc3 0-0 7.Nf3 Nbd7 8.d4 ed4 9.Nd4 Nc5 10.Bd3 Ne6 (10...a4 11.0-0=) 11.0-0 Nd4 12.ed4 d5 13.cd5 (13.Nd5 Nd5 14.cd5 Bd6+–) 13...Bg4 (13...Qd6 14.Re1+=) 14.Qb3 Bd6 15.f3 Bh5 16.Rae1 Bg6 17.Bc4 (17.Bg6 fg6 18.Ne4 a4+–) 17...Nh5 (17...Re8!?=) 18.Ne4+– Be4? (better 18...a4!? 19.Qc3 Re8+–) 19.fe4+– (19.Re4?! Nf6+=) 19...Qh4 (19...a4 20.Qf3 g6 21.e5+–) 20.e5 Bb4 21.Re2 Nf4 (21...Kh8 22.Qf3 f6 23.Re4+–) 22.Re4 g5 23.Qc2 Qg4 24.a3 Be7 25.Bc1 Nh3 (25...Qd7 26.Bf4 gf4 27.Ref4 Bd6+–) 26.Kh1 Nf4 (26...Qc8 27.gh3 Qh3 28.Re3+–) 27.g3 1–0. pcmvr (2765) – lovecraft (2240), net–chess.com, 2014.

6.Nc3 0-0 7.Nf3 Be6 8.d4 h6 9.d5 Bf5 10.h3 (10.Bd3 e4 11.Bc2 Nbd7=) 10...Nbd7=+ 11.Be2 Nc5 12.0-0 Re8 13.Na4 (13.Ba3 b6=+) 13...Na4 14.Qa4 Ne4 15.Bd3?? (better 15.Qa3=+) 15...Nc5-+ 16.Qa3 Bd3 17.Rfc1 Bc4! 18.Rc4 Qd7 19.Rg4 (19.Qc3 Qb5 20.Qc2-+) 19...f5 20.Rc4 Qb5 21.Rac1 Qd7 22.Ba1 b5 23.R4c2? (23.Ne5 de5 24.Rc5 Bc5 25.Rc5-+) 23...b4 24.Qb2 Reb8 (24...Nd3 25.Qb1 Nc1 26.Rc1-+) 25.Rc4? (25.Rc5 dc5 26.Ne5 Qd5-+) 25...Bf6 (better 25...Nd3 26.Rc7 Qc7 (26...Nb2?! 27.Rd7 Nd3 28.Rd1=+) 27.Rc7 Nb2 28.Bb2 Kf8 29.Ne5 de5 30.Be5 Rc8 31.Bg7 Ke8-+) 26.Qe2 Qf7 (26...e4 27.Nd4-+) 27.Qd1 (27.Ne5 Qd5 28.Ng6-+) 27...Rb5 (27...Re8 28.Qc2-+) 28.Ne1? (better 28.Be5 Be7 29.Bb2-/+) 28...Rab8 29.f3 (29.Nf3 Na6-+) 29...e4 (29...a4 30.f4 ef4 31.Bf6 Qf6 32.ef4-+) 30.Bf6 Qf6 (30...gf6?! 31.fe4 fe4 32.Nc2-+) 31.Qd4 Qd4 32.ed4 Na6 33.fe4 fe4 34.Rc6 R8b6 35.Rb6 (35.Kf2 b3 (35...Rd5?! 36.Rb6 cb6 37.Ke3-+) 36.ab3 Rb3-+) 35...cb6 36.Rc8 (36.Kf2 b3 (36...Rd5?! 37.Ke3-+) 37.ab3 Rb3 38.Rc8 Kf7-+) 36...Kh7 37.Rc6 (37.Re8-+) 37...a4 38.Nc2 (38.Kf2 b3 39.ab3 ab3-+) 38...b3 39.ab3 ab3 40.Na3 b2 (better 40...Ra5 41.Nc4 b5 42.Nd2-+) 41.Rd6 b1Q (better 41...Nb4!? 42.Nb1-+) 42.Nb1 Rb1 43.Kf2 Nb4 44.Rd8 (44.Ke3-+) 44...Nc2 45.d6 (45.Rc8 e3 46.Ke2 Re1 47.Kd3 Rd1 48.Kc2 e2-+) 45...Rd1 (45...e3 46.Ke2 Rb3 47.Kd1 Nd4 48.Kc1 Rc3 49.Kb1-+) 46.Kg3 (46.d7 e3 47.Kf3-+) 46...Rd4 (46...e3 47.Kf3 Rd4 48.Rc8-+) 47.Kf4 (47.Rc8 Ne3 48.Kf4 Ng2 49.Ke5-+) 47...e3 48.Kf3 b5 (48...Rd2 49.Re8-+) 49.d7 (49.Rc8 Rd2 50.Rc2 Rc2 51.Ke3 Rc6-+) 49...b4 (better 49...Rd2 50.Re8 Rd7 51.h4-+) 50.Rc8 Rd7 51.Rc2 b3 (better 51...Rd2 52.Rc7 e2-+) 52.Rb2 Rd3 53.Ke2 Rc3 54.Rb1 (54.Kf3-+) 54...Kg6 55.Rf1 (55.Ra1-+) 55...b2 56.Rb1 Ra3 (better 56...Rb3-+) 57.Rb2= Kg5 58.Rb4 Ra2 59.Kf3 Rf2 60.Kg3 (60.Ke3 Rg2 61.h4 Kh5=+) 60...Kf5 (60...h5 61.h4 Kf5 62.Rb5 Ke4 63.Rb4 Kd3=+) 61.Rb8 Ke4 62.Rb7 (62.Re8 Kd3 63.Rd8 Kc4 64.Rc8 Kd4 65.Rd8 Kc3 66.Rc8 Kd2=+) 62...g5 (62...Rf5 63.Rb4 Kd3 64.Rb3 Kd2 65.Rb2 Kd1 66.Rb1 Kc2-+) 63.Rb6?? (63.Re7 Kd3 64.Rd7 Kc4 65.Rc7 Kd5 66.Rd7 Ke5 67.Re7 Kd4 68.Rd7 Kc3 69.Rc7 Kd2 70.Ra7=+) 63...Rf5 (63...h5 64.Rb1 h4 65.Kh2 e2-+) 64.Rb3?? (64.Re6 Kd3 65.Ra6-/+) 64...e2 65.Rb4 Ke3 66.Rb3 Kd2 67.Rb2 Kd1 68.Kg4 (68.Rb1 Kc2 69.Ra1-+) 68...Rf4 69.Kh5 e1Q 70.Rb1 Kd2 71.Re1 Ke1 (71...Rh4 72.Kg6 Ke1 73.Kf5-+) 72.Kh6 Rf2 (better 72...Rf5 73.Kg6 Re5-+) 73.g4 Rh2 (73...Ke2 74.Kg5 Kf3 75.h4=) 74.Kg5 Rh3 75.Kf6 (75.Kf5 Rf3 76.Ke5-+) 75...Kf2?? (75...Rf3 76.Ke6 Re3 77.Kf5 Ke2-+) 76.g5= Kf3 77.g6 Rg3 78.g7 Kf4 79.Kf7 Rg7 80.Kg7 ½-½. carlos78 (2260) - jarda (2205), Rated Blitz game, lichess.org, 2015.

6.d3 0-0 7.Qc2 c6 8.a4 Be6 9.Nf3 Nbd7 10.Ng5 (10.Be2 cb5 11.ab5 Qc7=) 10...Nc5 (10...Ng4 11.Nf3=+ (11.Ne6? fe6 12.f3 Ne3–+)) 11.Be2 (11.d4 ed4 12.ed4 h6=) 11...h6 (11...cb5!? 12.Ne6 Ne6 13.ab5 Qc7=) 12.Ne6+= fe6 13.0-0 cb5 14.cb5 (14.ab5 Qc7+=) 14...Rc8= 15.Qd1 e4 16.d4 Ncd7 17.Qb3 Nd5?? (better 17...d5=) 18.Bg4+– Kh8 19.Be6 Nb4 (better 19...Nc7+–) 20.Bd5?? (better 20.Nc3+–) 20...Nf6+= 21.Be6 Rc7 (21...Nd7 22.Nc3 Qc7+–) 22.Nd2 d5 23.Rfc1 (23.f3 ef3 24.Rf3 Qd6+–) 23...Bd6 24.Rc7 (24.Ba3 Kh7+–) 24...Bc7 25.Rc1 (25.Bh3!?+=) 25...Qd6 (better 25...Nd3 26.Rc7 Qc7=+) 26.g3?? (26.Nf1 Qe6 27.Rc7=) 26...Qe6–+ 27.Rc7 Qh3 28.Qd1?? (28.f3 ef3 29.Nf3–+) 28...Ng4 29.Qb3 (29.Qg4 Qg4 30.Rc1–+) 29...Qh2 30.Kf1 Qf2 0–1. e4_e5_f4 (1720) – ioancea (1740), lichess.org, 2020.

6.d4 ed4 7.ed4 0-0=+ 8.Nf3 d5 9.c5 c6 10.a4 b6=+ 11.cb6 Bb4 12.Nbd2 Bg4 13.Be2 Bf3 14.Bf3 Re8 15.Kf1 Qb6 16.Be2 Nbd7 17.g3 c5 18.dc5 Bc5 19.Kg2 Bf2 20.Rf1 Bd4 21.Bd4 Qd4 22.Nf3 Qb2 23.Re1 Rac8 24.Rb1 Qa3 25.Ra1 Qc3 26.Qd3 Qc7 27.Qd2 Nc5 28.Rac1 Qb6 29.Bd1 Nfe4 30.Qd4 Qd6 31.Bc2 f5 32.Red1 Nf6 33.Bf5= Nb3 34.Rc8 Nd4 35.Re8 Ne8 36.Nd4 Nf6 0–1. Endean,Andrew (1665) – Amir,Jacob, IECG, 2004.

6.d4 ed4 7.Bd4= 0-0 8.Nc3 c5=+ 9.bc6 Nc6 10.Be2 d5 11.Nf3 dc4 12.Bc4 Bg4 13.0-0 Nd4–/+ 14.Qd4 Bf3 15.gf3 Qd4 16.ed4 Rfc8 17.Nd5 Rc4 18.Ne7 Kf8 19.Nf5 g6 20.Nd6 Rd4 21.Nb7 Rd3 22.Kg2 Rd2 23.Rfd1 Rc2 24.a4 Ra7 25.Rd8 Kg7 26.Nd6 Nh5 27.Rb8 Nf4 28.Kg3 Nh5 29.Kg2 Rd7 30.Rd1 Re7 31.Ra8 Nf4 32.Kg3=+ Nh5 33.Kg2–/+ Ree2 34.Rf1 Rcd2 35.Nb5 Re5 36.Ra5 Rg5 37.Kh1 Nf4 38.Ra8 Nh3–+ (39.Rd8 Rd8–+) 0–1. Bendig,Frank – Knobloch, corr, 1990.

6.d4 ed4 7.Bd4 Nbd7 =.

6.d4 Nbd7 7.Nf3 =.

6.Be2 Nbd7 7.Nf3 e4 8.Nd4 d5 9.Nf5 (9.Qc2 dc4 10.Nc3 Nc5 11.Bc4 0-0+=) 9...Bf8 (9...Nb6!? 10.Ng7 Kf8=) 10.cd5+= Nc5 11.Ng3 Nd5 12.0-0 Nb4 (12...h5!? 13.Nh5 Qh4+=) 13.Nc3+– Nbd3 14.Qc2 (14.Qb1 f5 15.f3 Nb2 16.Qb2 Nd3+–) 14...Nb2 (14...Nb4 15.Qc1 f5 16.f3+–) 15.Qb2 Nd3 16.Qb1 f5 17.f3 Nb4 18.fe4 Qd2 19.Qc1 Qc1 20.Rac1 fe4 21.Nge4 c6 22.Bc4 Bg4 (22...Rb8!?+–) 23.a3+– Nd5 24.Nd5 cd5 25.Bd5 Rc8 (25...Rd8 26.Bb7 Ba3 27.Rc7+–) 26.a4 Ba3 (26...b6 27.Bc6 Ke7 28.Ng5+–) 27.Ra1 Bb2 28.Ra2 Be5 29.Bb7 Rc4 30.h3 Be6 31.Ng5 Ke7 32.Ne6 Ke6 33.Rd2 Rc3 34.Bd5 Kd6 35.Bc6 Ke7 36.Rd7 Ke6 37.Ra7 Re3 38.Ra5 (38.Rd1 Bg3 39.Bd7 Kf7 40.Rf1 Ke7 41.Bc6 Ke6+–) 38...Ra3 (38...Bd4 39.Kh1+–) 39.Ra6 Bd4 40.Kh2 Rb8 41.Re1 Kd6 (41...Re3 42.Re3 Be3 43.a5+–) 42.Be4 (42.Bf3 Bb6+–) 42...Kc5 43.Bh7 1–0. Reprimand (2410) – Panza (2540), ChessWorld.net, 2010.

6.Ne2 0-0 7.Ng3 Be6 8.Bd3 c6 9.a4 Nbd7 10.Qe2 Nc5 11.Bc2 Qd7 12.h3 e4 13.Nc3 d5 14.cd5 cd5 15.Nd1 Rac8 16.Rc1 Rfd8 17.0-0 h6 18.f3 ef3 19.Rf3 Nfe4 20.Ne4 Ne4 21.Bd4 Ba3 22.Nb2 Qd6 23.Qd3 Qb4 24.Bc3 Rc3 25.dc3 Qb2 26.Rb1 Qc3 27.Qc3 Nc3 28.Rb3 Bb4 29.e4 Ne4 0–1. sacaniev – theantropos (1875), kurnik, 2013.

6.Ne2 Bg4 7.f3 Bc8 8.g3 b6 9.Bg2= Bb7 10.0-0 Nbd7 11.d4 0-0 12.d5 Nc5 13.a4 Rb8 14.Qc2 Bc8 15.Nd2 Ne8 16.f4+= Bf6 17.fe5 de5 18.Ne4 Ne4 19.Be4 g6 20.Ba3 Be7 21.c5 Bh3 22.Rf2 bc5 23.Bc5 Bd6 24.Rd1 f5 25.Bg2 Bg2= 26.Kg2 Nf6 27.Bd6 Qd6 28.h3 e4 29.Nf4 Rf7 30.Qc4 Rd8 31.Ne6 Rdd7 32.Rfd2 Nh5 33.Nf4 Ng3 34.Kg3 g5 35.Rf2 Rg7 36.Kh2 gf4 37.ef4 Qg6 38.Qf1 Qg3–/+ 39.Kh1 Kf8 40.Qg2 Qb3 41.Qf1 Rd5 42.Rfd2 Rd2 43.Rd2 Ke7 44.Kh2 Qg3 45.Kh1 Rg6 46.Rc2 Rh6 47.Rh2 Rh4 48.Qc1 Qf4 49.Qc5–/+ Qd6 50.Qf5 Qd1 51.Kg2 Qf3 52.Qf3 ef3 53.Kf3 Ra4 54.Rc2 Kd7 55.Rc6 Rb4 (56.Rh6 Rb5 57.Rh7 Kc6–+) 0–1. Sulak,Edward – Raduj,Jozef, corr Tch19–Poland, 1992.

6.Nf3 c5 7.Be2 (7.Nc3 0-0=) 7...Nbd7 (7...e4 8.Ng1=+) 8.Qc2 b6 9.0-0 Bb7 10.d3 0-0 11.Ng5 (11.Nc3 Re8=) 11...h6 (11...d5 12.Nc3=) 12.Ne4 Ra7 (12...Qc7 13.Nbc3+=) 13.Nbc3 (13.Bf3 d5 14.Nf6 Nf6 15.Be5 dc4 16.dc4 Bf3 17.gf3 Qd7+=) 13...Qa8 (13...Ne4 14.de4 Re8 15.Rad1+=) 14.Bf3+= Ne8 15.Nd5 Bd5 16.cd5 Nef6 17.Nf6 Nf6 18.a4 Rc7 (18...Nd5?? 19.Qb3+–) 19.Rfe1 Qd8 (19...Nd5? 20.Qb3+–) 20.Rac1 Qd7 (20...Rc8 21.Qc4+=) 21.e4 (21.d4 ed4 22.Bd4 Ne8+=) 21...Rfc8 (21...Ne8 22.Qe2+=) 22.Qe2 Bd8 23.Rc4 Qe7 24.Rd1 Nh7 (24...Qd7 25.Rdc1+=) 25.Bg4 Rb8 26.f4! ef4 27.e5 f5? (better 27...Qg5 28.Rf1 Re7 29.Rcf4 h5+– (29...de5?? 30.Rf5 Qg6 31.Bh5+–)) 28.Bf5+– Qg5 (28...f3 29.Qf3 Ng5 30.Qf4+–) 29.Be6 Kh8 30.ed6 (30.Rf1 Be7 31.Rcf4 Bf8+–) 30...Ra7 31.d4 Nf6 (31...Bf6+–) 32.dc5 bc5 33.Bc1 (33.Rc5?! Bb6 34.Bd4 Bc5 35.Bc5 Rab7+–) 33...Nh5 (33...Qg6 34.Bf4 Bb6 35.Qc2+–) 34.d7 Bb6 (34...Qg6+–) 35.Bg4 Nf6 36.Bf4 Qg4 37.Qg4 Ng4 38.Bb8 Rd7 (38...Rb7 39.Re1 Kh7 40.Rg4 Rb8 41.Re8+–) 39.Rg4 c4 (39...Kg8 40.Rg6 Bd8 41.Rc6+–) 40.Kh1 c3 41.Rc4 Rb7 42.Be5 Re7 (42...Kg8 43.Bc3 h5 44.d6+–) 43.Bc3 1–0. DEFFM – jangazy, freechess.org, 2018.

6.Nf3 c6 7.a4 0-0 8.Be2 b6 9.0-0= Bb7 10.h3 (10.Nc3 Nbd7=) 10...Nbd7 11.d4 e4 12.Nh2 (12.bc6!? Bc6 13.Nfd2=) 12...d5= 13.cd5 cd5 (13...Nd5 14.Nd2=+) 14.Nd2 Ne8 (14...Rc8 15.Ba3=+) 15.Rc1 Nd6 (15...Rc8 16.Rc8 Bc8 17.Ng4=) 16.Qb3 (16.Ng4 Rc8=) 16...f5 17.Rc2 Bf6 (17...Nf6 18.Rfc1=) 18.Rfc1 Qe7 (18...Rc8 19.Rc8 Nc8 20.Ba3=) 19.Ba3 (better 19.Rc6!? Qe6 20.Ne4+–) 19...Qe6+= 20.Rc7 Rab8 21.Nhf1 Rfc8 (21...Be7 22.Ng3+=) 22.Ng3 (22.Ne4!? Ne4 23.Rb7 Rc1 24.Rb8 Nb8 25.Bc1+–) 22...Rc7+= 23.Rc7 Bd8 (23...Ne8 24.Rc3 Bg5 25.Nh5=) 24.Rc2 (24.Bd6 Qd6 25.Rb7 Rb7 26.Nf5 Qe6+–) 24...Be7= 25.Rc3 Nf7? (better 25...Nf6+=) 26.Be7+– Qe7 27.Nf5 Qf6 (27...Qf8 28.Rc7 Nf6 29.Ne7 Kh8 30.Qa3+–) 28.Ng3 (better 28.Bg4!?+–) 28...Qd6+– 29.Bg4 Nf6 30.Bd1 h5? (30...Rf8!?+–) 31.Qc2 (31.Bh5 Nh5 32.Nh5 Rf8+–) 31...h4 (31...g6 32.Ne2+–) 32.Ne2 (32.Nf5 Qe6 33.Nh4 g5+–) 32...Qd7 (32...Nh6 33.Qc1+–) 33.Rc7 (33.Nf4 Qf5+–) 33...Qd8 34.Nf4 Nd6? (better 34...Ng5+–) 35.Qc3?? (better 35.Rg7! Kh8 36.Rc7+–) 35...Rc8? (better 35...Nde8!? 36.Rb7 Rb7+–) 36.Rc8+– Qc8 37.Qc8 Bc8 38.Bb3 Kf7? (better 38...Bb7+–) 39.Bd5 (better 39.Nd5 Nd5 40.Bd5 Be6 41.Be4 Bb3 42.Nb3 Ne4+–) 39...Nd5 (39...Ke8+–) 40.Nd5 Nc4 (40...Be6 41.Nb6 Ke8+–) 41.Nc4 Be6 42.Ndb6 g5 43.Na5 1–0. Abdullaevich (1885) – gina1491 (1900), lichess.org, 2020.

6.Nf3 Bf5 7.Be2 0-0 8.0-0 Nbd7 9.Nc3 b6 (9...h6 10.d4=) 10.d4+= ed4 (better 10...h6!?+=) 11.Nd4+– Bg6 12.Bf3 (12.f4 h6+–) 12...Rc8 (12...Ne5 13.Ba8 Qa8 14.Nce2+–) 13.Bb7 Ne5 14.Bc8 Qc8 15.Nd5 Nd5 (15...Re8 16.Ne7 Re7 17.Ne2+–) 16.cd5 Qa8 (16...Bf6 17.f3+–) 17.Nc6 (17.f4 Nd3 18.Nc6 Qe8 19.Bg7 Kg7+–) 17...Nc6 18.dc6 Qc8 19.f3 (19.Re1 Qf5 20.Qb3 Qe6+–) 19...Qe6 20.e4 Rd8 (20...f5 21.ef5 Qf5 22.a4+–) 21.Qd5 h6 (21...Qd5 22.ed5 Bd3 23.Rfe1+–) 22.Rad1 Qd5 23.Rd5 f6 24.a4 (24.Rd4 Bf7 25.Ra4 d5+–) 24...Bf7+– 25.Rd2 Re8 (25...d5 26.Rfd1+–) 26.g3 Bg6 27.Bd4 Bf7 28.Kf2 Bb3 29.Ra1 d5 (29...Kf7!?+–) 30.ed5 Bb4 31.Re2 (31.d6 Bd2 32.d7 Ra8+–) 31...Re2? (better 31...Rd8!?+–) 32.Ke2+– Bd5 (32...Bd6 33.Bb2+–) 33.Be3 Bd6 (33...Bc4 34.Kf2 g5 35.Rd1+–) 34.Bf4 (better 34.Rd1!? Bb3 35.Rd6 cd6+–) 34...Bf4 35.gf4 Kf7?! (35...Be6 36.Rd1 Kf7 37.Ke3+–) 36.Rd1 (36.f5 Bc4 37.Ke3 Ke8+–) 36...Ke6 (36...Be6 37.Ke3+–) 37.Ke3 (37.f5 Ke5 38.Rg1 Bb3+–) 37...g5 (37...Bb3 38.Rd4 g6 39.Kd3+–) 38.Rd4 (better 38.Rd3+–) 38...Kd6 (38...f5+–) 39.fg5 hg5 40.f4 Ke6 41.fg5 fg5 42.h4 (better 42.Kd2 Ke5 43.Kc3 Bb3+–) 42...gh4 43.Rh4 Kd6?? (43...Bb3+–) 44.Kd4 Be6 45.Rh6 Ke7 46.Ke5 Bb3 47.Rh7 Kf8 (47...Bf7 48.Rg7 Ke8 49.Kf6 Bd5 50.Re7 Kf8 51.Rc7 Kg8 52.Rd7 Be4 53.c7 Bb7 54.Rd8 Kh7 55.c8Q Bc8 56.Rc8 Kh6 57.Rh8) 48.Kf6 Kg8 (48...Bc4 49.Rc7 Kg8 50.Rg7 Kh8 51.Rb7 Bd5 52.Rb8 Kh7 53.c7 Be6 54.c8Q Bc8 55.Rc8 Kh6 56.Rh8) 49.Rc7 Ba4 (49...Bc4 50.Rg7 Kh8 51.Rb7 Bd5 52.Rb8 Kh7 53.c7 Bb7 54.Rb7 Kh6 55.c8Q Kh5 56.Rh7) 50.Rb7 (50.Rg7 Kf8 51.c7 Bb5 52.Rf7 Kg8 53.c8Q Be8 54.Qe8) 50...Bb5 51.c7 Bd7 52.Rb8 Kh7 53.c8Q Bc8 54.Rc8 a4 (54...b5 55.Rc5 b4 56.Ra5 b3 57.Rb5 Kh6 58.Rb3 Kh5 59.Rb4 Kh6 60.Rh4) 55.Rb8 a3 (55...b5 56.Rb5 a3 57.Ra5 Kh6 58.Ra3 Kh5 59.Ra4 Kh6 60.Rh4) 56.Rb6 a2 (56...Kh6 57.Ra6 Kh5 58.Kf5 a2 59.Ra2 Kh4 60.Ra3 Kh5 61.Rh3) 57.Ra6 a1Q (57...Kh8 58.Kg6 a1Q 59.Ra1 Kg8 60.Ra8) 58.Ra1 Kg8 (58...Kh8 59.Kg6 Kg8 60.Ra8) 59.Ra7 (59.Rh1 Kf8 60.Rh8) 59...Kh8 60.Kg6 Kg8 61.Ra8 1–0. Sebesta,Petr – Zurawicki,Jakub, Orlova Open, 2017.

6.g3 0-0 7.Bg2 c6 8.a4 Be6 9.d3 Qc7 10.Nd2 Nbd7 11.Ne2 Nc5 12.Qc2 Bf5 13.e4 Be6 14.h3 cb5 15.ab5 b6 (15...Nfd7 16.f4 f5 17.d4 Ne4 18.Ne4 fe4 19.Be4=+) 16.f4 Rfc8 17.f5 (17.Nf3 Nd3 18.Qd3 Bc4+=) 17...Bd7= 18.g4 Ne8 19.h4 f6 (19...Qd8 20.g5=) 20.Nf3 (20.Nc3 Bd8+=) 20...d5 21.ed5 Nd6 22.Nd2 Bf5? (better 22...Ncb7 23.Nc3 h5 24.gh5 Nf5+=) 23.gf5+- Nf5 24.Kf2 (better 24.Rh3+-) 24...Bd6? (better 24...Re8+-) 25.Bh3 g6 26.h5! Re8 (26...gh5 27.Ng3 Double attack (27.Bf5 Deflection; 27.Ng3 Decoy)) 27.hg6 hg6 (27...Nh4 28.d4 ed4 29.gh7 Kh8 30.Bd4 Be5+-) 28.Bf5 gf5 29.Rag1 Kf8 30.Rh8 Ke7 31.Rg7 (31.Rg7 Kd8 32.Re8 Ke8 33.Rc7 Bc7 34.d4 ed4 35.Bd4+-) 1-0. Shuvalov,E (2180) - Belova,O (2065), Titled Tuesday 3rd Nov, 2020.

7.Nc3 Nbd7 8.Nf3 Re8 9.Be2 Bf8 10.d4 e4 11.Nd2 c6 12.0-0 d5 13.Qb3 h6 (13...Bb4 14.c5+=) 14.Rac1 (14.cd5 c5 15.dc5 Nc5+–) 14...g6 (14...Bb4 15.cd5 cd5 16.Ba3 Ba3 17.Qa3=) 15.bc6 (better 15.cd5!? c5 16.dc5 Nc5 17.Qc4+–) 15...bc6+= 16.cd5 cd5 (16...Rb8 17.Qc2 cd5 18.Nb5+=) 17.Nb5 (17.Nd5!? Nd5 18.Qd5+–) 17...Rb8+= 18.Qc2 Qe7 (18...Ba6 19.Nb3+=) 19.Ba3 Qd8 20.Bf8 Nf8 21.Na7 (21.Nb3!?+–) 21...Bd7+= 22.Bb5 Bb5 23.ab5 (23.Nb5 Rc8 24.Qa2 Qb6+=) 23...Qb6 (23...Qd7!? 24.Nc6 Rb5=) 24.Nc6+= Rb7 25.Rb1 Ne6 26.Qc3 (26.Rfc1!?+–) 26...Ra8= 27.Rfc1 Kg7 28.Qa3 a4 29.Rc3 (29.Rb4 Nc7 30.Rcb1 Nd7+=) 29...h5 (29...Nc7 30.Qa2=+) 30.h3 (30.Qa1 Nc7=) 30...Rc7 (30...Nc7!? 31.Qa2 Nb5=+) 31.Rb4+= Exerts pressure on the isolated pawn 31...g5 (31...Rb7 32.Rc1+=) 32.Ra4 (32.Nb3+–) 32...Rac8? (32...Ra4!? 33.Qa4 Rb7+–) 33.Rb4 (33.Rb3!? g4+–) 33...g4+– 34.Qa5?? (34.hg4 hg4 35.Qb2 g3+–) 34...Qb7 (better 34...Qa5 35.Na5 Rc3 36.b6–+) 35.h4?? (better 35.Ra3!?+–) 35...g3?? (35...Ra8 36.Nd8 Ra5 37.Nb7 Rb7 38.b6–+) 36.fg3?? (36.Rbb3 gf2 37.Kf2+–) 36...Ng4?? (better 36...Ra8 37.Nd8 Ra5 (37...Rc3 38.Nb7 Ra5 39.Na5+=; 37...Rd8?! 38.Rc7 Nc7 39.b6–+) 38.Nb7 Rb7–+ (38...Rc3 39.Na5 Re3 40.b6+=)) 37.Nf1?? (37.Qa4 Qb6+–) 37...Nh6?? (37...Ra8 38.b6 Ra5 39.Na5 Qb6 40.Rb6 Rc3 41.Rb3=+) 38.Rc5?? (better 38.Qa4+–) 38...Ng4 (38...Ra8 39.b6 Rc6 40.Qa8 Qa8 41.Rc6=+) 39.Qa1 (better 39.Qa4!? Nc5 40.dc5 Rc6 41.bc6 Qc6 42.Qc6 Rc6 43.Rb5=) 39...Rc6–/+ 40.Rc6? (better 40.bc6!? Qb4 41.Rd5–/+) 40...Rc6–+ 41.Qe1 (41.bc6 Qb4 42.Kh1 Qc4–+) 41...Rc2 (41...Rb6!? 42.Qe2–+) 42.Rb1 Qb6 43.Nh2 (43.Qd1 Rc3–+) 43...Nd4 44.Ng4 Ne2 (44...hg4?! 45.ed4 Qd4 46.Kh2=+) 45.Kh2 hg4 46.Qf2 Qf6?? (46...Nd4 47.Qf4 Nf3 48.Kh1 Qb5 49.Qg4 Kf8–+) 47.b6?? (better 47.Qf6 Kf6 48.b6–/+) 47…Qf2 (47...Qf2 48.b7 Qg3 49.Kh1 Qh4) 0–1. BeepBeepImAJeep (2615) – Elda64 (2525), lichess.org, 2016.

7.d4 ed4 8.Bd4 d5 9.Nf3 c6 (9...Bb4 10.Bc3=) 10.Nbd2 Bf5 (10...Bg4 11.h3 Be6 12.Qc2=) 11.cd5 cd5 (11...c5 12.Be5=) 12.Nh4 Bg4 (12...Be6 13.Bd3+=) 13.Be2 Be2 14.Qe2 Nbd7 (14...Qd7 15.0-0+=) 15.Nf5 Bb4 16.0-0 Rc8 17.Nb3 (17.Rac1 Qe8+=) 17...Bc3 (17...Qe8!?+=) 18.Rfc1+/- (18...Bb4 19.Rc8 Qc8 20.Na5+/-) 1–0. marekt – super_grandmaster_clive, ChessWorld.net, 2004.

7.Ne2 Bg4 8.Ng3?? (8.d4 ed4 9.f3 Bd7 10.Nd4 d5=) 8...Nbd7 (8...Bd1 9.Kd1 d5 10.Be2–+) 9.d4?? (better 9.Be2 Be6 10.d4 ed4 11.Bd4=) 9...Nc5 (better 9...Bd1 10.Kd1 ed4 11.Bd4 d5–+) 10.Qc1?? (better 10.f3 ed4 11.ed4+–) 10...ed4–+ 11.Ne2?? (better 11.Ra3 de3 12.f3–+) 11...Re8 (better 11...Nd3 12.Kd2 Nc1 13.Kc1 de3 14.fe3 Ne4–+) 12.Qd2?? (better 12.Nd4 Nfd7 13.Nc3=+) 12...d3 (better 12...Nfe4 13.Qd1 de3 14.fe3 Bh4 15.g3 Bf6–+) 13.Bc1?? (13.Ng3 Nb3 14.Qd3 Na1 15.Ba1–+) 13...d5 (better 13...Nfe4!? 14.Qa2 d2 15.Bd2 Nd3 16.Kd1 Ndf2 17.Kc1 Nh1 18.Nec3–+) 14.g3 (14.Nd4 dc4 15.Qa2 Nce4 16.Bd3 cd3–+) 14...b6 (14...Nfe4 15.Qa2 d2 16.Bd2 Nd3 17.Kd1 Nef2 18.Kc2–+) 15.h3 (15.Nd4 dc4 16.Nc6–+) 15...Rf8 (15...Nfe4!? 16.hg4 Nd2 17.Nd2 de2 18.Be2–+) 16.Qd1?? (better 16.Nd4 Be6 17.Bd3 Nd3 18.Qd3 dc4 19.Qc2–+) 16...Qe8 (better 16...Bf3 17.Rh2 Nfe4–+) 17.Nf4?? (better 17.hg4 de2 18.Be2 dc4 19.Bc4=+) 17…d2. RichardSommer (2105) – MarkEdJayCasapao (2095), lichess.org, 2020.

7.Nf3 c6 8.d4 cb5 9.ab5= e4 10.Nfd2 Bg4 11.Be2 Be2= 12.Qe2 Qd7 13.Nc3 Qf5 14.0-0 Nbd7 15.Ra2 Rfc8 16.Rfa1 Bd8 17.Nb3 b6 18.d5 Ng4 19.Nd4 Qg6 20.Nc6 Bh4 21.Na4 Bf2= 22.Qf2 Rc6=+ 23.dc6 Nf2 24.cd7 Ng4 25.Bd4 Rd8 26.Nb6 +=. Lea,Per – Jernberg,Karl Petter, corr, 1976.

7.Nf3 e4 8.Nd4 =+.

7.Nf3 Bg4 8.Be2 Nbd7 9.0-0 Nc5 10.Nc3 e4 11.Nd4 Qd7 12.Ba3 Rae8 13.f4 (13.Ne4 Nce4 14.f3 Bf3 15.Bf3 d5 16.Be7 Qe7 17.cd5 Nd5+=) 13...ef3 (13...Be2 14.Nde2 d5 15.cd5 Nd5 16.Bc5 Bc5 17.Rc1=+) 14.Bf3= Bf3 (14...Nd3 15.Nd5 Bf3 16.Qf3=) 15.Qf3+= Qg4 16.Qg4 Ng4 17.Bc5 (17.Nd5!? Bd8 18.Bc5 dc5 19.Nb3=) 17…dc5= (17...dc5 18.Nf3 Bf6=). Bulatovic,M (1930) - Illijin,N (2150), TCh-SLO Div, 2018.

7.a4 e4 8.Nd4 +=.

7.a4 Be6 8.d4 ed4 9.Nd4 Bg4 10.Qc2 h6 11.Bd3 c5 12.bc6 (12.Nf5!?+=) 12...Nc6= 13.Nc6 bc6 14.0-0 Rb8 15.Nd2 d5 16.Rab1 Rb4 17.Bc3 Rb1 18.Rb1 Qd7 (18...Re8!?+=) 19.Ba5+/- dc4 20.Bc4 Bf5 21.Qb2?? (better is 21.e4 Ra8 22.Bc3+/-) 21...Bb1+= 22.Qb1 Bd8 (22...Ra8 23.Nb3–/+) 23.Bb4 Be7 24.Bc3 (24.Ba5 Ra8 25.Nb3 Qd6–/+) 24...c5 25.h3? (25.Qb3 Qf5=) 25...Nd5 (25...Qa4 26.Bb3 Qh4 27.Nf3–/+) 26.Be5 (better is 26.Qd3 Rd8 27.Ne4+=) 26...Nb4?? (better is 26...Ne3!? 27.Qg6 Nf5–/+) 27.Nf3 (27.Qg6 Qg4 28.hg4 Bf6 29.Bf6 Rd8 30.Qg7) 27...Qa4?? (better is 27...Ra8=) 28.Qb2 Qc2 29.Bg7 Rd8?? 30.Bb3?? Qb2 31.Bb2–/+ Nd3 32.Bc3 Rc8 33.Bc4 Nc1 34.Bb2 Rd8 35.Ne5 Rd1 36.Kh2 Bd6 37.f4 Be5–/+ 38.Be5 Rd2 39.e4 Ne2 40.f5 Nd4 0–1. barborski – bojleryipiece, playok.com, 2012.

7.Qc2 c6 8.Nc3 h6 (8...Bg4 9.Be2=) 9.Be2 cb5 10.Nb5 Bd7 11.0-0 Na6 12.Nc3 Rc8 13.d3 b5 (13...Bf5 14.Rab1=) 14.cb5+= Bb5 15.a3 (15.Qd2 Bc6+=) 15...Nd5 16.Rab1 Nac7 17.Nd5 Nd5 18.Qd2 a4 19.e4 (19.Be5 de5 20.Rb5 e4+=) 19...Nf4= 20.Be5 Ne2 21.Qe2 Bd3 22.Qd3 de5 23.Qb5 Qe8 24.Qe5 ½–½. pcmvr – gambito (2645), net–chess.com, 2010.

7.Nc3 Bf5 =+.

7.d4 c6 8.Nbd2 (8.de5 de5 9.Qd8 Rd8 10.Be5 Bb4 11.Bc3 Ne4 12.Bb4 ab4+=) 8...cb5 (8...e4 9.Ng1+=) 9.cb5 (9.de5!? de5 10.Ne5 bc4 11.Bc4=) 9...e4+= 10.Ng1 d5 11.a4 b6 12.Ne2 Nbd7 13.Nc3 Ne8?? (13...Ra7 14.Rc1=) 14.Be2?? (better is 14.Nd5 Bd6 15.Ne4+–) 14...Bb7 15.Qb3 Nc7 16.0-0 Kh8 17.f3 f5 18.fe4 fe4 19.Rf8 Nf8 20.Rf1 Ng6 21.Bh5 Bg5 22.Ne2 Be3?? (better is 22...Ne7+=) 23.Qe3+– Qe7 1–0. barborski – pim66, kurnik, 2012.

7.d4 Nbd7 8.de5 de5 9.Ne5 Ne5 10.Qd8 (10.Be5? Qd1 11.Kd1 Ng4–+) 10...Rd8 11.Be5 Ng4 12.Bc7 (12.Bc3=) 12...Bb4 (better is 12...Rd7!? 13.Ba5 Ra5–+) 13.Ke2+/- Rd7 (13...Rd1 14.Kd1 Nf2 15.Ke2 Nh1 16.Kf3+/-) 14.Bf4 (14.Bg3 Nf6+–) 14...Nf6 (14...Rd1!?+/-) 15.a3+– Bc5 16.Nc3 Re7 17.Rd1 (better is 17.Nd5!? Nd5 18.cd5+–) 17...Bg4 18.f3 Nh5? (better is 18...Be6 19.Na4 Ba3+/-) 19.Bg5+– (19.fg4?! Nf4 20.Kf2 Rae8+= (20...Re3 21.Na4 Rd3 22.Nc5 Rd1 23.Nb7=)) 19...f6 20.fg4 fg5 21.Nd5 Nf4+= 22.Nf4 Re3+= 23.Kd2 gf4 24.Bd3 Rd8 25.Kc2+= Ba3? 26.Rhe1?? Re1 27.Re1 Bb4 28.Re4 Rf8 29.Be2 g5 30.Bf3 Rd8 31.Re2 b6= 32.Bd5 Kg7 33.Re6 Bc5 34.Kb3 Rf8 35.h3 Rf6 36.Re8 Rd6 37.Re7 Kf6 38.Rh7+= Ke5 39.Re7 Kd4 40.Kc2?? Rd5–+ 41.cd5 Be7 0–1. ognos (1690) – savuflorin1983 (1710), kurnik, 2012.

7.d4 e4 8.Nfd2 c6 9.a4 d5 10.Nc3 Ne8 11.Qb3 Be6 12.Ba3 f5 13.g3 Kh8 14.Be7 Qe7 15.h4 dc4= 16.Bc4 Bc4 17.Nc4 Nd7 18.0-0-0 Nef6=+ 19.Kb1 Nd5–/+ 20.Nd5 cd5 21.Ne5 Ne5 22.de5=+ Rad8 23.Rd4 Qe5 24.Rhd1 Qe7 25.Rd5 Rd5 26.Rd5 Rd8 27.Qa3 (27.Rd8 Qd8 28.Qc4 h5=) ½–½. Larsen,Jim – Aagaard,Michael, DEN–chJ int, 1980.

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

8.ed4 d5 9.Nc3 Re8 (9...a4 10.Bd3 a3 11.Bc1 dc4 12.Bc4 Bb4 13.Qb3 Qe7) 10.Be2 dc4 11.0-0 Be6 12.Ne5 c5 13.dc5 Nbd7.

8.ed4 d5 9.c5+= b6 (9...Re8 10.Be2 b6 11.cb6 cb6 12.0-0 Nbd7 13.Nc3 Bd6) 10.cb6 cb6 11.Be2 Bf5 12.0-0 Qc7 13.Nc3 Nbd7.

8.ed4 d5 9.Bd3 Bb4 10.Nc3 Re8 11.Kf1 Bg4 12.Qb3 Bc3 13.Bc3 Nbd7.

8.ed4 d5 9.Bd3 dc4 10.Bc4 Bb4 11.Nbd2 (11.Bc3 Nd5 12.Bb4 Re8 13.Ne5 ab4=) 11...Re8–/+ 12.Kf1 Bf5 (12...Be6 13.a3 Bd2 14.Nd2 Bc4 15.Nc4–/+) 13.a3=+ Bf8 14.Qb3 Be6 15.Be6 Re6 16.Ng5 Re7 17.a4 Qd5 (17...Nd5!?=+) 18.Qd5= Nd5 19.Ba3 Re8 20.Bf8 Rf8 21.g3 (21.Nc4 Re8=) 21...Nd7 22.Kg2 N7b6 (22...Rfe8 23.Ngf3=) 23.Nde4 Nc4 (23...Rfe8 24.Nc5+=) 24.Rhc1+= Nd6 25.Rc5 Ne4 26.Ne4 Rfd8 27.Nc3 Nc3 28.Rc3 Rac8 (28...c6 29.bc6 bc6 30.Rd1+=) 29.Rac1 Rd4 30.Rc7 Rc7 31.Rc7 h5 32.Rb7 Ra4 33.Ra7 Ra3 (33...g6 34.Kf3+=) 34.b6+– Rb3 35.b7 Kh7 36.Ra5 Rb7 37.Rh5 Kg6 38.Ra5 Kh6 39.h4 f6 40.Kf3 g5 (40...Rb3 41.Ke4+–) 41.Kg4+– gh4 42.gh4 Rb4 43.f4 White prepares h5 43...Rc4 (43...Rb6 44.Kf5+–) 44.Ra6 Kg7 45.Ra7 Kg6 46.h5 Kh6 47.Ra6 (47.Rf7 Rc6+–) 47...Kg7 48.Rb6 Rc5 49.Re6 Ra5 50.Re7 Kh6 51.Rf7 (51.Re8 Kg7+–) 51...Rh5+– 52.Rf6 Kg7 53.Kh5 (better 53.Rc6 Rb5 54.Ra6+–) 53...Kf6= 54.Kg4 Kg6 55.Kg3 Kf5 ½–½. GuestKBJG – GuestZBVL, freechess.org, 2018.

8.ed4 d5 9.Bd3 dc4 10.Bc4 Nbd7 11.0-0 Nb6 12.Bd3 a4 13.Nc3 a3.

8.ed4 d5 9.Be2 dc4 (9...Bb4 10.Nc3 Ne4 11.Rc1 Be6 12.cd5 Bc3 13.Bc3 Bd5 ) 10.0-0 Nbd7 11.Nbd2 c3 12.Bc3 Nd5 13.Bb2 Re8.

8.ed4 Nbd7 A) 9.Nc3 Re8 (9...d5 10.c5 a4 11.Be2 Ne4 12.Nd5 Ndf6 13.Ne7 Qe7) 10.Bd3 Bf8 11.Ne2 d5 12.0-0 dc4 13.Bc4 Nb6; B) 9.Be2 d5 (9...Nb6 10.Nbd2 Bf5 11.0-0 Re8 12.Re1 Qd7 13.Nh4 Be6 ) 10.0-0 dc4 11.Bc4 Nb6 12.Bd3 a4 13.Nc3 a3; C) 9.Bd3 d5 (9...Nb6 10.Nbd2 Be6 11.d5 Bg4 12.h3 Bh5 13.0-0 Nbd7) 10.Nbd2 dc4 11.Nc4 Bb4 12.Kf1 Nd5 13.g3 N7b6.

8.ed4 Re8 9.Be2= (9.Bd3 Bf8 (9...d5 10.0-0 dc4 11.Bc4 Nd5 12.Ne5 Be6 13.Qf3 Nd7) 10.Be2 Nbd7 11.0-0 Ne4 12.Nc3 Ndf6 13.Qc2 Nc3; 9.Nc3 d5 (9...Nbd7 10.Bd3 Bf8 11.Ne2 Nb6 12.d5 Nbd7 13.0-0 Nc5) 10.Be2 dc4 11.0-0 Be6 12.Ne5 c5 13.dc5 Nbd7) 9...Nbd7 (9...Bf5 10.0-0= (10.Nc3 Nbd7 11.0-0 d5 12.c5 c6 13.Re1 Ne4) 10...d5 11.Nc3 Nbd7 12.c5 c6 13.Re1 Ne4; 9...Be6 10.0-0 d5 11.Nbd2 Nbd7 12.Qc2 dc4 13.Nc4 Nd5) 10.0-0 Nf8 (10...Nb6 11.Nbd2 Bf5 12.Re1 Nh5 13.g3 Bf6) 11.Re1 (11.Nc3 Ng6 12.Qd2 Bf5 13.Rae1 Qd7) 11...Ng6 (11...Ne6 12.g3 Qd7 13.Nc3 b6) 12.g3 (12.Nc3 Nf4= 13.Bf1 Qd7) 12...Bg4 (12...d5 13.Nc3 Bb4) 13.Nbd2 (13.Nc3 Qd7) 13...Qd7 (13...d5=) 14.Nf1 Bf8 (14...d5 15.Ne3=) 15.Ne3+= Bh5 16.Bf1 (16.d5 Be7+=) 16...Ne4 (16...d5 17.c5=) 17.h3 f5 18.Nd5 (better is 18.Bg2!?=) 18...Ng5 19.g4 Re1 20.Ne1 fg4 21.Ne3 (21.Bc1 Qf5 22.hg4 Bg4+=) 21...Nf3 22.Nf3 gf3 23.d5 (23.Nd5 Qf5–/+) 23...Nf4 24.Kh2 Qf7 (24...Be7 25.Qc2 Bg5 26.Qf5–+) 25.Qd4 (25.Ng4!?–/+) 25...Re8–+ 26.Re1 b6 (better is 26...Ne2!? 27.Be2 fe2–+) 27.Ng4+= Bg4 (27...Qf5 28.Re8 Be8 29.Qe3+=) 28.Re8 Qe8 29.Qf4 Bh5 (29...Qe1 30.Bd4 Bd7 31.Bd3=) 30.Bd3 Qe1 31.Bd4 Be7 32.Qg3 (32.Qf5 Bf6 33.Qh7 Kf8 34.Qh8 Ke7 35.Bf6 gf6 36.Qg7 Bf7=) 32...g5+= 33.Bf5 h6 34.Be6 Kf8 35.Bg4 Bg4 36.Qg4 Qd1 37.Qc8 Kf7= 38.Qe6 Kf8 39.Qh6+– Ke8 40.Qg6 Kd8 41.Qg8 Kd7 42.Qe6 Kd8 43.Bf6 Bf6 44.Qf6 Kc8 45.Qg5 Qe2 46.Kg3 Qa2 47.h4 Qb1 48.Qg4 Kb7 49.h5 a4 50.Qg6?? Qh1?? 51.Qc2+= a3 52.Qa2 Qg2 53.Kf4= Qh2 54.Kf3 Qh5 55.Ke3 Qg5 56.Kd3 Qf6 57.f4 Qf4 58.Kc3 ½–½. Honores,J – Harter,Jorge, PER–ch, 1993.

8.ed4 Bf5 A) 9.Nc3 Re8 (9...d5 10.Bd3 Bd3 11.Qd3 Qd6 12.cd5 Nbd7 13.0-0 Nd5 ) 10.Be2 Nbd7 11.0-0 d5 12.c5 c6 13.Re1 Ne4; B) 9.Be2 Nbd7 (9...d5 10.Nc3 dc4 11.Bc4 Nbd7 12.0-0 Nb6 13.Bd3 Qd7) 10.0-0 Ne4 11.Nc3 Ndf6 12.Bd3 Nc3 13.Bc3 Bd3; C) 9.Bd3 Bd3 (9...Qc8 10.0-0 Bd3 11.Qd3 Qg4 12.Nc3 Nbd7 13.Rae1 Rfe8) 10.Qd3 d5 11.c5 Nbd7 12.0-0 Ne4 13.Nc3 Ndf6.

8.Qd4 A) 8...Bf5 A1) 9.Be2 a4 (9...Nbd7 10.Nc3 a4 11.Nd5 h6 12.0-0 Nc5 13.Rac1 Qd7) 10.Nc3 a3 11.Bc1 Nbd7 12.Qf4 Be6 13.Nd4 Ne5; A2) 9.Nh4 Be6 (9...Bg4 10.Nc3 Nbd7 11.h3 Be6 12.Be2 Ne5 13.Nf3 Nfd7) 10.Nc3 Nbd7 11.Be2 a4 12.0-0 a3 13.Bc1 Nc5; A3) 9.Nc3 Nbd7 (9...a4 10.Nd5 Nbd7 11.Be2 h6 12.0-0 Nc5 13.Rac1 Qd7) 10.Be2 Nc5 11.0-0 h6 12.Nd5 a4 13.Rac1 Ne6; B) 8...Bg4 B1) 9.Nc3 Nbd7 (9...h6 10.Be2 Nbd7 11.h3 Be6 12.0-0 Nc5 13.Rad1 Bf5) 10.Be2 Nc5 11.0-0 h6 12.Nd5 Ne6 13.Qd1 Nc5; B2) 9.Bd3 Nbd7 (9...Bf3 10.gf3 Nbd7 11.Nc3 Ne5 12.Be2 a4 13.f4 a3) 10.Nbd2 Nc5 11.h3 Bh5 12.0-0 Qd7 13.Ng5 Nd3; B3) 9.Be2 Nbd7 (9...a4 10.0-0 Nbd7 11.h3 Bf5 12.Qf4 Bg6 13.Bd4 Nc5) 10.Nc3 Ne5 11.Ne5 de5 12.Qe5 Re8 13.Rd1 Bd6; C) 8...h6 C1) 9.Bd3 Nbd7 (9...c5 10.Qc3 Nbd7 11.Nbd2 Nb6 12.Qc2 Be6 13.0-0 Qc7) 10.0-0 Nc5 11.Nc3 Ne6 12.Qh4 Nc5 13.Qd4 Bg4; C2) 9.Be2 a4 (9...Nbd7 10.Nc3 Nc5 11.0-0 Bf5 12.Nd5 a4 13.Rac1 Qd7) 10.Nbd2 Nbd7 11.Ne4 a3 12.Bc3 Nc5 13.Nc5 dc5; C3) 9.Nc3 Nbd7 (9...Bf5 10.Be2 Nbd7 11.0-0 Nc5 12.Nd5 a4 13.Rac1 Qd7) 10.Be2 Nc5 11.0-0 Bf5 12.Nd5 a4 13.Rac1 Qd7; D) 8...Nbd7 D1) 9.Be2 a4 (9...Nc5 10.Nc3 Be6 11.0-0 Ng4 12.h3 Bf6 13.Qd2 Ne5) 10.0-0 Nc5 11.Nbd2 Bf5 12.Qf4 Qd7 13.Nd4 Bg6; D2) 9.Bd3 Nc5 (9...Ne5 10.Nc3 Bh3 11.Ne5 de5 12.Bh7 Kh7 13.Qd8 Rfd8) 10.0-0 Nd3 11.Qd3 d5 12.Nc3 dc4 13.Qc4 Be6; D3) 9.Nc3 Nc5 (9...h6 10.Be2 Nc5 11.0-0 Bf5 12.Nd5 Qd7 13.Nh4 Be4) 10.Be2 Bf5 11.0-0 Ne6 12.Qd1 a4 13.Na4 h5.

8.Bd4 c5 9.Bb2 Nbd7 (9...Be6 10.Bd3 Nbd7 11.0-0 Qc7 12.Ng5 Ne5 13.Be5 de5) 10.Be2 Qc7 11.0-0 Ne5 12.Nc3 Be6 13.Nd5 Nd5.

8.Bd4 c5 9.Bb2 Be6 10.Nc3 Nbd7 11.a3 Ne5 12.Be2 Nc4 13.Bc4 Bc4 14.Qc2 d5 15.Ne5 Qc7 16.Nc4 dc4 17.0-0! Bd6 18.g3 b6 19.Rad1 Rad8 20.Qf5 Qe7 21.Na4 Bc7 22.Bf6 Qf6 23.Qf6 gf6 24.Nc3 Rd3 25.Ne4 Be5 26.Nd2 c3 27.Nc4 Rd1 28.Rd1 Rb8 29.Rc1 Kf8 30.Ne5 fe5 31.Rc3 Rd8 32.Kg2 Ke7 33.Kf3 Ke6 34.Ke4 f5 35.Kf3 Rd2 36.h4 e4 37.Kg2 Kd5 38.g4 fg4 39.Kg3 c4 40.Kg4 Rf2 41.h5 h6 42.Rc1 Rf3 43.Rc3 Kc5 44.a4 Kb4 45.Rc1 Re3 46.Kf4 Rh3 47.Ra1 c3 48.Ke4 c2 49.Kf5 Rg3 50.Rc1 Kc3 51.Kf4 Rg8 52.Kf5 Kb2 53.Re1 c1R 54.Re6 Rc5 55.Kf6 Rh5 56.Kf7 Rb8 57.Re3 Rh4 58.Kg6 Ra4 59.Kh6 Rb4 60.Re5 a4 61.Kg5 a3 62.Kf6 a2 63.Re2 Kb3 64.Re3 1–0. vihavald (1610) – newbie0088, kurnik, 2013.

8.Bd4 c5 9.Bc3 d5 (9...Bf5 10.Bd3 Bg6 11.0-0 Nbd7 12.Bg6 hg6 13.Nbd2 d5) 10.Qc2 Re8 11.Be2 Ne4 12.0-0 Bf5 13.Bd3 Nd7.

8.Bd4 c5 9.bc6 Nc6 (9...bc6 10.Bd3 c5 11.Bb2 Nc6 12.Nc3 Rb8 13.Rb1 Ne5) 10.Nc3 d5 11.cd5 Nd5 12.Bc4 Be6 13.Bd5 Bd5.

8.Bd4 d5= A) 9.cd5 Nd5 (9...Bf5 10.Bc4 Bb4 11.Nbd2 Nd5 12.0-0 c5 13.Bb2 Nb6) 10.Nc3 Bb4 11.Qd2 c5 12.Be5 Nc3 13.Bc3 Bf5; B) 9.Nbd2 Nbd7 (9...Be6 10.Bd3 Nbd7 11.cd5 Nd5 12.0-0 Nb4 13.Bc4 Nc5) 10.cd5 Nd5 11.e4 Nf4 12.Be3 Ne6 13.Bc4 Nf6; C) 9.Nc3 c5 (9...Bb4 10.a3 Bc3 11.Bc3 Be6 12.cd5 Bd5 13.Bd3 Nbd7) 10.Be5 Be6 11.cd5 Nd5 12.Nd5 Bd5 13.Qc2 Nd7.

8.Bd4 Nbd7 A) 9.Bd3 Nc5 (9...g6 10.Nc3 Nc5 11.0-0 Bg4 12.Bc2 Ne6 13.h3 Nd4) 10.Nc3 Bg4 11.0-0 Qd7 12.Bc2 Qe6 13.h3 Bh5; B) 9.Be2 Nc5 (9...Re8 10.Nc3 Nc5 11.0-0 Bf5 12.Nh4 Be6 13.Qc2 g6) 10.Nc3 Bf5 11.Nh4 Be6 12.0-0 Nfe4 13.Ne4 Ne4; C) 9.Nc3 h6 (9...Nc5 10.Bd3 Bg4 11.0-0 Qd7 12.Bc2 Qe6 13.h3 Bh5) 10.Bd3 Nc5 11.0-0 Be6 12.h3 Re8 13.Bc5 dc5.

8.Bd4 Be6 A) 9.Nc3 c5 (9...Nbd7 10.Bd3 h6 11.0-0 Nc5 12.h3 Qe8 13.Bc5 dc5) 10.Bf6 Bf6 11.Rc1 a4 12.Ne4 Be7 13.h4 Nd7; B) 9.Be2 Nbd7 (9...h6 10.Nc3 c5 11.bc6 Nc6 12.0-0 d5 13.Qb3 dc4) 10.0-0 Nc5 11.Nc3 Bf5 12.Nh4 Be6 13.Qc2 Qc8; C) 9.Bd3 c5 (9...Nbd7 10.Nc3 Nc5 11.0-0 Bg4 12.e4 Ne6 13.Be3 Qd7) 10.Bc3 Nbd7 11.0-0 h6 12.Nbd2 Qc7 13.Qc2 Rfd8.

8.Bd4 h6 A) 9.Qc2 Be6 (9...Nbd7 10.Nc3 Nc5 11.Be2 Qd7 12.Bc5 dc5 13.0-0 Qe6) 10.Nc3 Nbd7 11.Be2 Nb6 12.Bb6 cb6 13.Nd4 Rc8; B) 9.Nc3 c5 (9...Nbd7 10.Bd3 Nc5 11.0-0 Bg4 12.Bc2 Qd7 13.h3 Bf5) 10.Bf6 Bf6 11.Rc1 Be6 12.Be2 Be7 13.0-0 Nd7; C) 9.Bd3 Nbd7 (9...Be6 10.0-0 Nbd7 11.h3 Nc5 12.Nc3 c6 13.Rb1 Qc7) 10.h3 Nc5 11.Nc3 Qd7 12.0-0 Qe6 13.e4 Nd3.

8.Nd4 a4 A) 9.Nd2 c5 (9...Nbd7 10.Be2 Ne5 11.0-0 d5 12.Qc2 a3 13.Bc3 Bd6) 10.N4f3 Bf5 11.Be2 Nbd7 12.0-0 Nb6 13.Qc1 d5; B) 9.Nc3 c5 (9...a3 10.Bc1 c5 11.Nf3 Nbd7 12.Be2 Ne5 13.0-0 Bf5) 10.Nf3 Qa5 11.Qc2 a3 12.Bc1 Ne4 13.Bd2 Nd2; C) 9.Be2 c5 (9...Nbd7 10.0-0 d5 11.cd5 Nd5 12.a3 Nc5 13.Nc3 Qd6) 10.Nf3 Bf5 11.0-0 Nbd7 12.Bd3 Ne4 13.Qc2 Bf6.

8.Nd4 c5 A) 9.bc6 Nc6 (9...bc6 10.Nc3 c5 11.Ndb5 Nc6 12.Be2 Rb8 13.0-0 Bf5) 10.Nc3 a4 11.Be2 a3 12.Bc1 Qa5 13.Bd2 Qc5; B) 9.Ne2 Nbd7 (9...Bf5 10.Nbc3 a4 11.Nf4 Nbd7 12.Be2 Qa5 13.Qd2 a3) 10.Nf4 Ne5 11.Nc3 a4 12.a3 Bg4 13.f3 Bf5; C) 9.Nf3 Nbd7 (9...Be6 10.Bd3 Nbd7 11.0-0 Qc7 12.Nbd2 Ng4 13.Qc2 f5) 10.Be2 Nb6 11.Nbd2 Bf5 12.0-0 a4 13.Qc1 d5.

8.Nd4 d5 9.Nc3 c5 10.bc6 Nc6 11.Nc6 bc6 12.Bd3 Rb8 13.Qc2 Ba6 14.Nd1 dc4 15.Bc4 Bb4 16.Ke2 Bc4 17.Qc4 Qd2 18.Kf3 Nd5 19.Qd4 Qd4 20.Bd4 c5 21.Be5 Rb7 22.Rb1 Rd7 23.h4 f6 24.Ba1 c4 25.Rc1 Rc8 26.Nc3 Nc3 27.Bc3 Rd3 28.Bd4 Rd2 29.Bc3 Ra2 30.Ke4 Rf2 31.g4 Rg2 32.Kf3 Ra2 33.Rhd1 h6 34.Rd7 Ra3 35.Bd4 c3 36.g5 hg5 37.hg5 fg5 38.Rg1 c2 39.Rg7 Kf8 40.R1g5 c1Q 0–1. lenda77 (1720) – adamk112 (1890), kurnik, 2014.

8.Nd4 Nbd7 9.Nc3 a4 (9...Ne5 10.f4 Neg4 11.Qf3 Re8 12.Be2 Bf8 13.e4 c5) 10.a3 Ne5 11.Be2 Bg4 12.f3 Bh5 13.0-0 h6.

8.Nd4 Nbd7 9.Nd2 Ne5 (9...d5 10.Be2 Ne5 11.0-0 Qd6 12.cd5 Nd5 13.Nc4 Nc4) 10.Be2 Bg4 11.0-0 Qd7 12.h3 Be2 13.Qe2 d5.

8.Nd4 Nbd7 9.Be2 Ne5 (9...a4 10.0-0 Nc5 11.Qc2 Bg4 12.f3 Be6 13.Ne6 fe6) 10.0-0 c5 11.bc6 bc6 12.Nc3 Rb8 13.Qc2 Qd7.

8.Nd4 Nbd7 9.Nf5 Nc5 (9...Ne5 10.Ne7 Qe7 11.Nc3+=) 10.Ne7+= Qe7 11.Be2 Be6 (11...Bg4 12.Nc3 Be2 13.Ne2=) 12.0-0= Nfd7 (12...Rfe8 13.Nc3=) 13.Nc3 Nb6 14.Nd5 Bd5 15.cd5 Qe4 16.Bf3 Qc4 17.Qd4 Qd4 (17...f6 18.Qc4 Nc4 19.Bd4=) 18.Bd4+= (worse is 18.ed4 Nca4 19.Bc1 Rfe8+=) 18...Nbd7 19.Rac1 f5 20.g4 (20.g3 b6+=) 20...f4 21.Kg2 b6 22.Rc4 fe3 23.fe3 (worse is 23.Be3 Rf3 24.Rc5 Rf2 (24...Nc5?! 25.Kf3 Rf8 26.Ke2=) 25.Rf2 bc5–+ (25...dc5?! 26.g5–/+; 25...Nc5?! 26.Rc2–/+)) 23...Rae8 24.Rcc1 Ne5 25.Be2 g5 26.Rf5 Rf5 27.gf5 Kg7 28.h4 (28.Bf3+=) 28...g4? (better is 28...Kf6!? 29.Rf1 gh4=) 29.Bg4+/- Kf6 30.Bh3 (30.Rf1 Ncd3 31.Bd1 Nb4+/-) 30...Rg8 31.Kh2 Rg7 32.Rg1 (32.Rc2!?+/-) 32...Rg1+= 33.Kg1 Ncd3 (33...a4 34.Kf2 a3 35.Bg4+=) 34.e4 (34.a3+=) 34...Ke7? (34...Nc1 35.Kf2 Na2 36.Bf1+=) 35.Be3 (35.Bf1!? Nc5 36.Bc5 bc5 37.Kf2+/-) 35...Nb4+= 36.a4 (36.a3 Na2+=) 36...Nbd3= 37.Bg5 Ke8 38.f6 (38.Bg2 Nc5=) 38...Nc5+= 39.Bf5 Na4 40.Bh7 Nc5 41.Bc1 Kf7 42.Kf1 Ncd7 43.Ke2 Nf6 44.Bf5 a4 45.Kd1 Nf3 46.h5 Nd4 (46...Nh5? 47.Bg4 Nd4 48.Bh5 Ke7 49.Be2+–) 47.Bg6 Kg7 48.Bb2 (48.Be3 Nb5 49.Kc2 Ng4=) 48...Nf3+= (48...Nb5?? 49.Be8+–) 49.Kc2 (49.Bf6!? Kf6 50.Kc2+=) 49...Ne5–/+ 50.Be5? (better is 50.Bf5–/+) 50...de5–+ 51.Kc3 Kh6 52.Kb4 (52.Bf7 Nh5 53.Kb4 Kg5–+) 52...Nh5 53.Bf5 (53.Be8 Nf6 54.d6 cd6–+ (54...Ne8?? 55.d7 Nd6 56.d8Q+–)) 53...Kg5 54.Ka4 Nf6 55.Kb4 Kf4 56.Kc4 Ne4 57.Bd7 (57.Bg6 Nd6 58.Kb4 e4–+) 57...Nd6 58.Kd3 e4 59.Kd4 (59.Ke2 Nf5–+) 59...Nf5 Black plans e3 (better is 59...e3 60.Kd3 Kf3 61.Bg4 Kg4 62.Ke3–+) 60.Kc3 Ke5 (60...e3 61.Kd3–+) 61.Be6 (61.Bc6 Nd4 62.Bd7 e3–+) 61...Nd6 (better is 61...e3–+) 62.Kb4 (62.Bd7–+) 62...Kd4 63.Bg8 (63.Bh3 e3 64.Bf1–+) 63...e3 0–1. Lunin,Mikhail – Zhukovsky,Viacheslav, 2009.

8.Nd4 Be6 B1) 9.Be2 Nbd7 (9...Qc8 10.Nc3 Nbd7 11.Ne6 fe6 12.0-0 Nc5 13.Qc2 Qe8) 10.0-0 Nc5 11.Nc3 d5 12.Ne6 fe6 13.Qd4 a4; B2) 9.Nd2 Nbd7 (9...a4 10.Be2 a3 11.Ne6 fe6 12.Bd4 Nbd7 13.0-0 e5) 10.Be2 Nc5 11.0-0 Qd7 12.Qc2 Bg4 13.f3 Bh5; B3) 9.Nc3 Nbd7 (9...Qc8 10.f4 d5 11.f5 Bf5 12.cd5 Bb4 13.Bc4 Bg4) 10.Be2 Nc5 11.0-0 a4 12.Ba3 Qc8 13.Qc2 Rd8.

7.a4 Bb7 8.Nc3 Nbd7 9.Be2 0-0 (9...c5 10.bc6 Bc6 11.Nb5=) 10.d4 (10.0-0 Re8=) 10...ed4 11.ed4 d5 12.0-0 Re8 13.Re1 Bb4 14.Qb3 Bc3 (14...Ne4 15.Bd3=) 15.Bc3 Ne4 16.Ne5 (16.Rac1 Nc3 17.Qc3 c5+=) 16...Nc3 (16...Ne5 17.de5 Qg5 18.cd5 Bd5 19.Qd5 Nc3 20.Qc6 Qe5 21.Bf1=) 17.Qc3= Nf6 (17...Ne5 18.de5 d4 19.Qg3=) 18.c5+= bc5 (18...Ne4 19.Qf3 f6 20.Nd3+=) 19.Qc5+/- Ne4 20.Qc2 Rc8 21.Bd3 Nf6 (21...Qd6 22.Rad1+/-) 22.Bf5 Rb8 23.Rac1 g6 (23...Re7 24.Re3+/-) 24.Bh3 Re7 25.Nc6 (25.Qc5!?+/-) 25...Bc6 26.Re7 (worse 26.bc6 Rb4-/+) 26...Qe7 27.Qc6 (worse 27.bc6 Qa3-/+) 27...Re8 28.g3 Ne4 (28...Qa3 29.Kg2+=) 29.Qc7 (29.Bg2!?+/-) 29...Qf6+= 30.Qf4 Qd4 31.Rc7 Rf8 32.Bf1 (32.Kg2 Qd1 (32...Qa4?? 33.Rf7 Rf7 34.Be6+-) 33.Bd7 Qa4+=) 32...Qa4= 33.b6 Qb4 34.b7 Kg7? (better 34...Nd6!? 35.Qb4 ab4+/-) 35.Qe5 Kg8 36.f3?? (better 36.Qd5 Qb6 37.Rc2+-) 36...Qb6-/+ 37.Kh1 Qf2 38.Ba6 (38.Qa1 Qf3 39.Bg2 Nf2 40.Kg1 Qe3-+) 38...Qf3-+ 39.Kg1 Qf2 40.Kh1 Qe1 41.Kg2 Qf2 42.Kh3?? (42.Kh1 Nc5 43.Rc5 Qc5=+) 42...Qe1 (42...g5 43.Qe7 h5 44.Qf8 Kf8 45.b8Q Kg7 46.Rf7 Kf7 47.Qc7 Kg6 48.Qc6 Nf6 49.Bd3 Kh6 50.Qc1-+) 43.b8Q?? (43.Kg2 Qd2 44.Kg1-/+) 43...Nf2-+ 44.Kh4 (44.Kg2 Qe5 45.Qa7-+) 44…Qe5 (44...Qe5 45.Qf8 Kf8 46.Rc8 Kg7 47.Rg8 Kg8 48.g4 Qh2 49.Kg5 Ne4) 0-1. zembelek (2105) - Bordok (2180), Rated Blitz game, lichess.org, 2014.

7.Nc3 0-0 8.d4 ed4 9.Nd4 Bb7 10.Nf5 Re8 11.Nd5 (11.Be2 A) 11...Bg2 12.Rg1 Bh3 13.Ng7+- (13.Rg7?! Kf8 14.Ne7 Kg7+-); B) 11...Nbd7+=) 11...Bd5 (better 11...Nd5!? 12.Ng7 Bf6 13.Bf6 Nf6 14.Ne8 Qe8=+) 12.cd5+/- Bf8 13.Bc4 Nbd7 14.0-0 Nc5 (14...Ne5 15.Be2+/-) 15.Bd4 (15.Rc1 g6 16.Nd4 Bg7+/-) 15...g6 16.Ng3 Bg7 17.Qc1 Ncd7 (17...Ng4 18.Be2 Qh4 19.Bg4 Qg4 20.Bg7 Kg7 21.Qc3 Kg8 22.Rfc1+=) 18.Qb2 Rc8 19.f3 Ne5 20.Bb3 (20.Qc2 Nfd7+=) 20...Nd3 (20...a4 21.Ba4 Nd5 22.Qb3+=) 21.Qc3+/- Ne5 (21...Nc5 22.Bc4+/-) 22.e4 Nfd7? (22...h5 23.Rae1+/-) 23.h3?? (23.f4 Qh4 24.fe5 Ne5+-) 23...Nc5? (23...f6+/-) 24.Rae1?? (better 24.f4+-) 24...Qh4 (better 24...Nb3!? 25.ab3 Bf6+=) 25.f4+/- Nb3 26.ab3 (worse 26.Qb3 Nf3 27.Qf3 Bd4 28.Kh2 Re7+=) 26...Ng4?? (better 26...Nd7 27.Bg7 f6 28.Bf6 Nf6+/-) 27.Bg7+- (27.Bg7 f6 28.hg4 Kg7 29.g5+-; 27.hg4?! Bd4 28.Qd4 Qg3=+) 1-0. zembelek (2070) - Bordok (2210), Rated Blitz game, lichess.org, 2014.

7.Nc3 0-0 8.Be2=.

7.Nc3 Bb7 8.d4 0-0 (8...Nbd7!?=) 9.de5+/- de5 10.Ne5 Qc8 11.Nf3 Rd8 12.Qc2 Qg4 13.h3 Qh5 14.Be2 Nbd7 15.0-0 Nc5 16.Rad1 Nce4 17.Nd4 Qg6 (17...Qg5 18.Nd5! Bd5 19.cd5 Rd5 20.Bf3+-) 18.Bf3 (18.Bd3 Bd6+-) 18...Nc3 (18...Bc5 19.Na4+/-) 19.Qg6+- (19.Bb7 Qc2 20.Nc2 Rd1 21.Rd1 Nd1 22.Bf6 Ra7 23.Be7 Rb7-/+; 19.Bc3?! Ne4+/-; 19.Qc3?! Bf3 20.Nf3 Bb4+/-) 19...hg6 20.Bc3 (20.Bb7?! Nd1 21.Rd1 Rab8+/-) 20...Bf3 21.Nf3 Ne4 22.Bd4 Bb4 23.Ne5 Re8 (23...Nd2 24.Nc6 Nf1 25.Nd8+/- (worse 25.Kf1 Rd7+=; 25.Rf1?! Rd7=)) 24.Nc6 Bd6 (24...Nd6 25.Rc1+-) 25.f3 (25.Rd3 a4+-) 25...Nc5 (25...Ng3 26.Rf2+-) 26.Rfe1 (26.e4 Nd7+-) 26...Ne6 27.Bc3 (27.Re2 Nd8 28.Nd8 Rad8+-) 27...Bc5 (27...Bg3 28.Rf1+-) 28.Kh2 Ng5 (28...Nd8 29.Nd8 Red8 30.Rd5+-) 29.e4 Ne6 30.h4 (30.Be5 a4+-) 30...Nf4 (30...Bf2 31.Rh1+-) 31.g3 Ne6 32.f4 Bb4 (32...a4 33.f5 Nf8 34.Be5+-) 33.Bb4 ab4 34.Nb4 Nc5 (34...Ra4 35.Rb1+-) 35.e5 Ra4 36.Rb1 Rd8 37.Re2 Rd4 38.Rc2 Ne4 39.Kg2 (39.Rbb2 Ra3 40.Rb3 Ra4+-) 39...Ra3 (39...Rd2!? 40.Rd2 Nd2+-) 40.Rb3 Ra4 41.Kf3 (41.Kh3!? Rd2 42.Rd2 Nd2+-) 41...Nc5 42.Re3?? (better 42.Rb1+-) 42...Rb4-/+ 43.a3 (better 43.Rec3!?-/+) 43...Rbc4-+ 44.Rc4 Rc4 45.g4 Ra4 46.h5 (46.f5 gf5 47.gf5 Rh4-+) 46...gh5 47.gh5 Ne6 48.f5 Nd4 (better 48...Rf4 49.Kg3 Rf5 50.Kg4 Rg5 51.Kh4-+) 49.Ke4 (49.Kf2 Nb5 50.e6 fe6 51.fe6-+) 49...Nc2 (worse 49...Nb5 50.Kf3-+) 50.Kd3 (50.Kf3 Ne3 51.Ke3 Ra3 52.Kd4 Rb3-+) 50...Ne3 51.Ke3 Ra3 52.Ke4 (52.Kd4 Rb3-+) 52...Rb3 53.Kd5 (53.Kf4 Rb5 54.Ke4 Rb4 55.Kd5 Rf4-+) 53...Rb5 54.Kd4 Rc5 55.h6 (55.Ke4 Rc4 56.Ke3 Rh4-+) 55...Rc1 (better 55...gh6 56.e6 Kf8 57.ef7 Kf7 58.Ke4-+) 56.hg7 Kg7 57.f6 (57.Kd5 Rc5 58.Ke4 f6 59.ef6 Kf6-+) 57...Kh6 (57...Kg6 58.Kd5-+) 58.Kd5 Kg6 59.Ke4 Rc5 60.Kd4. zembelek (1940) - Bordok (2105), Rated Blitz game, lichess.org, 2014.

7.Nc3 Bb7 8.Be2 Nbd7 9.0-0 0-0 10.d4 ed4 11.Nd4 Nc5 12.Bf3 Nfe4 (12...Bf3 13.Qf3 Nfd7 14.Nd5+/-) 13.Qc2 (13.Ne4 Be4 14.Be4 Ne4+/-) 13...Nc3+= 14.Bc3 (14.Bb7 Nb7 15.Bc3 Nc5+=) 14...Bf3= 15.gf3 Qd7 16.Nc6 (16.Nf5 f6=) 16...Rfe8 17.f4 Qg4 18.Kh1 Qf3 19.Kg1 Bh4 20.Qd1 Qe4 (20...Qh3 21.Qe2-/+) 21.Bd4 (21.Qg4!? Qg6 22.Qg6 fg6 23.Bd4=) 21...Re6 22.f3 Rg6 (22...Qf5 23.Qd2=+) 23.Kh1= Qe6 24.f5 (24.Bc5!? Qh3 25.Rg1 Rg1 26.Kg1 dc5 27.e4=) 24...Qf5-/+ 25.Qe2 Re8 26.Rg1 Bf6 27.Rg6 hg6 28.Rg1 Bd4 29.Nd4 Qe5 30.Nc2 Ne6 31.Qd3 Ng5 (31...Qb2 32.a3-/+) 32.f4 (32.Rg3!?-/+) 32...Qe4-+ 33.Qe4 Ne4 (33...Re4? 34.fg5 Rc4 35.Nd4+-) 34.Kg2 (34.Re1 Nd2-+) 34...Nd2 (34...Nc3 35.Re1 Na2 36.e4-+) 35.Kf2 Nc4 36.Re1 Re4 37.Kf3 d5 (37...f5-+) 38.Nd4 (better 38.Rd1!? Nd6 39.Rd5-/+) 38...Nd2?? (better 38...Ne3 39.Nb3 Nf5 40.Re4 de4 41.Ke4 Nd6 42.Kd5 Nb5-+) 39.Ke2= (39.Ke2 Nc4 40.Kf3 Ne3 41.Nb3-+). zembelek (2065) - Bordok (2095), Rated Blitz game, lichess.org, 2014.

7.d4 ed4 8.Bd4 0-0 9.Be2 Bb7 10.0-0 Nbd7 11.Nbd2 Ne4 (11...Nc5 12.Qc2=) 12.Rc1 (12.Ne4 Be4 13.Nd2 Bb7+=) 12...Ndf6 (12...f5 13.Nb1=) 13.a4 (13.Bd3 Nc5 14.Bf5 Re8+=) 13...Re8 14.Re1 Rc8 15.Nf1 (15.Ne4 Ne4 16.Nd2 Nc5+=) 15...h6 (15...Ng4 16.N1d2 Ngf2 17.Qc2-/+) 16.Qb3 (16.N3d2 Nc5=) 16...Qd7 (16...Ng4 17.Qb2 f6 18.N1d2 Ngf2 19.Rf1 Nd2 20.Nd2=) 17.Red1 (17.N1d2!?=) 17...Ng4-/+ 18.Qb2 (better 18.N1d2 Ngf2 19.Rf1=+) 18...Ngf6?? (better 18...Ngf2 19.Re1 Qg4-+) 19.h3 (19.N3d2 Nc5 20.Bc5 dc5= (worse 20...bc5 21.Nb3+/-)) 19...Qe6 20.Rc2 (20.N1d2 Nc5=) 20...Nc5 (20...c5 21.bc6 Bc6 A) worse 22.Bb6 Rb8-/+ (worse 22...Ba4 23.Nd4 Qd7 24.Ba5=+); B) 22.Ra1=+) 21.Bf6 (21.Bc5!? dc5 22.Qe5=) 21...Bf6-/+ (worse 21...gf6 22.Nd4 Qe4 23.Bf3+/-) 22.Nd4 Qf5?? (better 22...Na4 23.Qa2 Bd4 24.ed4 Nc3 25.Rc3 Qe2-/+) 23.Nf5+- (23.Nf5 Bb2 24.Rb2 Na4 25.Rb3+-) 1-0. zembelek (1950) - Bordok (2045), Rated Blitz game, lichess.org, 2014.

7.d4 e4 8.Nfd2 Bb7 (8...c6 9.bc6 Nc6 10.Nc3+=) 9.Nc3 (9.d5 Nbd7+/-) 9...0-0 (9...d5 10.a3+=) 10.g3 (10.d5 Nfd7+/-) 10...Re8 (10...d5 11.Bg2=) 11.Bg2 (11.d5 Nbd7+/-) 11...Bf8 (11...d5 12.0-0=) 12.0-0 (12.d5 Be7+/-) 12...Nbd7 (12...d5 13.f3 ef3 14.Qf3+=) 13.Qc2+/- Qe7 14.a4 g6 15.Rac1 h5 (15...Bg7 16.Ba3+/-) 16.h3 (16.d5 Nc5 17.Ba3 Bg7+/-) 16...Bh6 17.Rfe1 Rac8 18.Qb1 (18.Ba3 Bg7+/-) 18...Ba8 (18...h4!?+=) 19.Ba3+/- c5? (better 19...Bg7!?+/-) 20.bc6!+- Bc6 (20...Bc6 21.h4 Combination; 20...Rc6 21.Nce4 Decoy (21.Nce4 Interception)) 21.Nb5 (better 21.d5!? Ba8 22.Nce4+-) 21...Bb5+/- 22.Qb5 (worse 22.cb5 Rc1 23.Rc1 Qe6+-) 22...Qe6 (22...Rc7 23.g4 hg4 24.hg4+/-) 23.Qb1 (23.Ne4 Ne4 24.Be4 Qe4 25.Qd7 Bf8+/-) 23...Qf5 (better 23...h4!?+=) 24.Bd6+- Bg7 (24...Qe6 25.Ba3+-) 25.Qb5 Qe6 26.Ba3 (26.Bf4 Bf8+-) 26...Nf8 (26...Rcd8 27.Red1+-) 27.Rb1 N8d7 28.Rec1 Kh7 (28...Rcd8 29.Rd1+-) 29.Rc2 (29.Ne4 Ne4 30.Be4 Qe4 31.Qd7 h4 32.gh4 Rc4 33.Rc4 Qb1 34.Rc1 Qe4 35.Qf7 Qe6+-) 29...Rb8 30.Rbc1 Nf8 (30...Red8 31.Rf1+-) 31.Nb3 (31.d5 Qd7+-) 31...Qc8 (31...N8d7 32.Rb2+-) 32.d5 (32.Bd6 Rb7+-) 32...Qf5? (32...Qc7 33.Rd2+-) 33.Nd4 (better 33.Bd6 Ra8+-) 33...Qg5 (33...Qd7 34.Nc6 Rb7 35.Rb1+-) 34.Nc6 (better 34.Bd6!? N6d7 35.Bf4 Qf6 36.Bb8 Rb8 37.Be4 h4 38.gh4 Qh4+-) 34...Rb7 35.d6 (35.Qa6 Rd7+-) 35...Qb5 36.cb5 Rd7 37.Rd1 (37.Ne7 Rdd8+-) 37...Rc8 (37...g5 38.Kf1+-) 38.Rcd2 (better 38.Kf1 h4+-) 38...Ne6?! (38...Re8 39.Bb2 Ng8 40.Kf1+-) 39.Kf1 (39.Ne5 Ng5+-) 39...Ne8 (39...h4 40.Ne5+-) 40.Be4 Nc5 (40...Bc3 41.Rc2 Bg7 42.Rc4+-) 41.Bc5 bc5 42.f4 (42.b6 c4 43.Bg2 c3+-) 42...c4 (42...Bf8 43.Na5 Nd6 44.Nc6+-) 43.Ne5 (worse 43.Na5 c3 44.Bc6 cd2 45.Bd7 Rc1 46.Be8 Rd1 47.Ke2 Ra1 48.Kd2 Ra2 49.Kd3 Ra3 50.Ke2 Ra4+-) 43...Be5 44.fe5 c3 45.Rc2 (better 45.Bc6 cd2 46.Bd7 Nd6 47.ed6+-) 45...f6 (45...Rc4 46.Bc6 Rd8+-) 46.Bc6 Rdd8 (46...Rcd8 47.Bd7 Rd7 48.b6 fe5 49.b7 Rf7 50.Ke1 Rb7 51.d7 Rd7 52.Rd7 Kh6 53.Re7+-) 47.Be8 fe5 (47...Re8 48.d7 fe5 49.de8R Re8 50.Rc3+-) 48.Bc6 Kg7 49.Rc3 Rf8 50.Kg2 Rcd8 51.d7 h4 52.gh4 Rh8 (52...Kf7 53.b6 Ke6 54.b7+-) 53.Kg3 e4 (53...Kf7 54.b6 Rhf8 55.b7+-) 54.Rc4 Rh5 55.Re4 Re5 56.Re5 (56.Re5 Rh8 57.Re7 Kf6 58.Re8 Rh7 59.d8Q Kg7 60.Rg8 Kf7 61.Bd5) 1-0. Owczarzak,J (2325) - Matnadze,A (2420), Euro Online Blitz Quali, 2020.

7.Be2 Bb7 8.0-0 Nbd7 9.d4 e4 (9...ed4 10.Nd4 0-0 11.Nc3+=) 10.Nfd2 0-0 11.Qc2 Re8 12.Nc3 Increases the pressure on e4 12...Bf8 13.f3 ef3 14.Bf3 Bf3 15.Rf3 (worse 15.Nf3 Re3 16.Rae1 Re1 17.Re1 d5=+) 15...Ng4 16.Nf1 h6 17.h3 Ngf6 18.Re1 Qe7 19.e4 Qd8 20.Ne3 Kh7?? (better 20...Rc8+–) 21.e5+– (21.e5 Kg8 22.ef6 Nf6 23.Ref1+–) 1–0. GuestKFHB – edut, freechess.org, 2017.

8.bc6 bc6 9.d3 =.

8.bc6 Nc6 9.Nc6 bc6 10.Be2 0-0 11.0-0 d5 12.cd5 Qd5 13.Nc3 Qg5 14.d3? Bh3–+ 15.g3 Bf1 16.Qf1 Rab8 17.Rb1 ed3 18.Bd3 Rb7 19.Bc1 Rb1 20.Nb1 Rd8 21.Be2 Qd5 22.a3 Qa2 23.Nc3 Qa1 24.Na4 Ba3 25.Ba3 Qa3 26.Nb6 Qb4 27.Nc4 a4 28.Ne5 Qc3 29.Nf3 a3 (30.Bc4 Ra8–+) 0–1. Hasler,Ueli – Rosner,Dirk (1930), CiF, 2006.

8.bc6 Nc6 9.d3 d5 =.

8.bc6 Nc6 9.Be2 0-0 10.d3 ed3 (10...d5 11.cd5 Qd5 12.de4 Bb4 13.Bc3 Ne4 14.Bb4 ab4 15.Bf3=) 11.Qd3 d5 12.0-0 (12.cd5 Bb4 13.Nc3 Nd5=) 12...Ne5 13.Qc2 Nc4 14.Bc4 dc4 15.Nd2 (15.Qc4 Bd6=) 15...b5=+ 16.a4 b4 17.Nc4 Qc7 18.Rac1 Rd8 19.f3 (19.Nb5 Qc5=+) 19...Qc5 20.Nb3 Qg5 21.Be5 Bf5 22.e4 Bd7 23.Bc7 (23.Nba5 Ra5 24.f4 Qh6 25.Na5 Ng4–/+) 23...Bc5=+ 24.Kh1 Rdc8 25.Nc5 Rc7 26.Nd7 Nd7 27.f4 Qc5 28.h3 (28.Rfd1 Rac8 29.Qe2 Qc6=+) 28...Rac8 29.Qd3 (29.Qb2 Nf6 30.e5 Nd5=+) 29...Qe7–/+ 30.Rfd1 Nc5–+ 31.Qd5 Na4 32.Qd4 Qh4 33.Rd2 h6 34.Kh2 Qf4 35.g3 Qg5 36.h4 Qh5 37.Kg2 b3 38.Nb6 Rc1 39.Nc8 Qb5 40.Ne7 Kh7 41.Rf2 Qe8 42.Nf5 f6 43.Qe3 Qc6 44.Qb3 Qe4 45.Qf3 Nc3 46.Qe4 Ne4 47.Re2 g6 48.Re4–/+ gf5 49.Ra4 Rc5 50.h5 Kg8 51.Kf2 Kf7 52.Ke2 Ke6 53.Kf3 Rc3 54.Kf4=+ Rd3 55.Ra5= Rd4 56.Kf3 Rd2 57.Ra6 Ke5 58.Ra5 Rd5 59.Ra3 Rd1 60.Ra5 Ke6 61.Ra6 Rd6 62.Ra7 Rd3 63.Kf4 Rd4 64.Kf3 Rd6 65.Rh7+= Rd3 66.Kf4 Rd4 67.Ke3 Ra4 68.Rh6 Ke5 69.Kf3 f4 70.gf4 Rf4 71.Kg3 Rd4 72.Rg6 Rd3 73.Kh2 f5 74.h6+= Rd4 75.Kg3 Rd7 76.Rg7+= Rd3 77.Kh4 Kf6 78.Rc7 Rd1 79.Rc6 Ke5 80.Kh5 Rh1 81.Kg6 Rg1?? 82.Kf7+– Rh1 83.Kg7 Rb1 84.h7 Rb7 85.Kh6 Rh7 86.Kh7 f4 87.Kg6 f3 88.Kg5 Ke4 89.Rf6 Ke3 90.Kg4 f2 91.Kg3 Kd4 92.Rf2 Ke3 93.Rf4 Ke2 94.Rf3 Ke1 95.Rf2 Kd1 96.Kf4 Ke1 97.Ke3 Kd1 98.Rh2 Kc1 99.Kd3 Kb1 100.Kc3 Ka1 101.Kb3 Kb1 102.Rh1# 1–0. Bonetti,Shane (2320) – QueenMaxima (2480), ICC, 2003.

8.bc6 Nc6 9.Be2 d5 10.0-0 =.

8.Ne2 0-0 9.Nbc3+= d5 (9...Be6 10.Nf4+=) 10.Nd5 Nd5 11.cd5 Qd5 (11...Nd7 12.Qc2 Re8 13.Rc1+=) 12.Qc2+/- Rd8 (12...Nd7 13.Nc3 Qf5 14.Ne4+/-) 13.Nc3 Qd6 (13...Qf5!?+/-) 14.Ne4+– Qg6 (14...Qh6 15.Nc5 Nd7 16.Nb3+–) 15.Bd3 Rd3 16.Qd3 Bf5 17.f3 Qg2 (better is 17...Nd7 18.0-0 Be6+–) 18.0-0-0 Qf3 19.Qc3 f6 20.Qc4 Kf8 21.Ng5!! Qh5 (21...fg5 22.Rhf1 Combination) 22.Qd5 Qg5 23.Rhf1 1–0. forsetinn (2375) – cachisss (1910), gameknot.com, 2015.

8.Ne2 Nbd7 9.Ng3 =.

7.Be2 0-0 8.0-0 Nbd7 9.h3 Bh5 10.Nc3 Nc5 11.d4 ed4 12.Nd4 Be2 13.Qe2 Nfe4 (13...Re8!?=) 14.Ne4+/- Ne4 15.Qg4 f5?? (better is 15...Nf6 16.Qf3 Rb8+/-) 16.Nf5+– (16.Nf5 Ng5 17.f4+–) 1–0. emeryt85 – hellipod, kurnik, 2011.

7.Be2= 0-0 8.Nc3 Nbd7 9.d4 ed4 10.ed4 (10.Nd4 Ne5 11.f3 Be6 12.Ne6 fe6=) 10...Nb6 11.Nd2 Be2 12.Qe2 (12.Ne2 Qd7=) 12...d5=+ 13.0-0 dc4 (13...Re8 14.Qf3=+) 14.Nc4= Nc4 15.Qc4 Bb4 (15...Qd6 16.Rae1=) 16.d5 (16.a3 Bc3 17.Bc3 Qd6=) 16...Bc3 (16...Re8 17.Rad1=) 17.Qc3 Qd5 18.Rfd1 (18.Qc7!? Rfc8 19.Qb6=) 18...Qb5-/+ 19.Rd3 (19.Rab1 Rfd8 20.Qc7 Rd1 21.Rd1 Qe2 22.Rd8 Ne8=+) 19...Rfd8 (19...Rfe8 20.Rad1-+) 20.Rg3 (better is 20.Rd8!? Rd8 21.Qc7-/+) 20...Rd6-+ 21.h4 (21.Qc2 Rc8-/+) 21...Rad8 (21...Re8 22.Rg5 Qe2 23.Ba3-+) 22.Rg5 (22.Qe5 Rd1 23.Rd1 Rd1 24.Kh2 Qe5 25.Be5 Ne8-+) 22...Qb6 23.Ra5 Rd1 24.Kh2 (24.Rd1 Rd1 25.Kh2 Ng4 26.Kh3 Nf2 27.Kg3 Ne4 28.Kf4 Rf1 29.Ke4 Qg6 30.Kd5 Qe6 31.Kc5 b6 32.Kb4 ba5 33.Ka3 Qd6 34.Kb3 a4 35.Kc4 Rf4 36.Qd4 Qc6 37.Kd3 Rd4 38.Bd4 Qg2 39.a3-+) 24…Ng4 (25.Kg3 Qf2 26.Kg4 Qg2 27.Kf4 Qf2 28.Kg4 R8d4 29.Qd4 Rd4 30.Bd4 Qd4 31.Kf3 Qc3 32.Kg2 Qa5-+) 0-1. Mueller - Noack, corr DDR, 1985.

7.Be2 0-0 8.d4 Bf3 9.Bf3 e4 10.Be2 c6 11.Nc3 d5 12.Qb3 Qd6 13.a4 Qe6 14.Rc1 Nbd7 15.0-0 Rfb8 16.Rc2 Nb6 17.bc6 (17.c5!? Nbd7 18.Rd2+=) 17...bc6= 18.cd5 Nbd5 19.Qa2 Qd7 20.Nd5 Nd5 21.Rcc1 Rb6 22.Bc3 Bb4 23.Ba1 Rab8 24.Qc4 h6 25.Rb1= Kh7 26.Rb3 f5 27.Rfb1 Qa7 28.Qc2 Qe7 29.Bb2 Qb7 30.Bc1 Qa7 31.g3 g6 32.Bf1 Kg7 33.Bg2 Qe7 34.h3 h5 35.Bb2 Re8 36.Qd1 Qd6 37.Rc1 Re7 38.Rc4 Reb7 39.Qc2 Qe6 40.Bf1 Kh7 ½–½. Beck,Hartmuth (2300) – Seuss,Oswald (2025), Vienna–ch, 2004.

7.Be2 0-0 8.h3 Bh5 9.Nc3 c6 10.a4 b6 (10...e4 11.Nd4 Be2 12.Qe2=) 11.bc6 (11.d4 e4 12.Nd2 Be2 13.Qe2 cb5=) 11...Nc6= 12.Ne5?? (12.0-0=) 12...Be2?? (better 12...Ne5 13.g4 Bg6-+) 13.Nc6+/- Bd1 14.Nd8 Ba4 15.Nf7?? (better 15.Ra4 Rad8 16.e4+/-) 15...Bb3-/+ Black intends a4 16.Ng5 Bc4 17.Nf3 (17.Ba3 Rfc8 18.Rb1 Ra6-/+) 17...b5 18.Ne2 b4 19.Nc1 (19.Nfd4!?-/+) 19...a4-+ 20.d3 Be6 21.Nd4 Bf7 (21...Kf7 22.Ne6 Ke6 23.Kd2-+) 22.Rb1? (better 22.Nc6!? Nd5 23.e4=+) 22...Rfc8-+ 23.Ba1 b3 24.0-0 (24.e4 Kf8-+) 24...Nd5 (24...Rcb8 25.e4-+) 25.Ndb3 ab3 26.Nb3 Rc2 (26...Nc3 27.Bc3 Rc3 28.Nc1-+) 27.Nd4 Rd2 28.Rfd1 Rd1 29.Rd1 Bf6 30.Bb2 (30.Nc2 Nc3 31.Bc3 Bc3-+) 30...Nb4 (30...Bg6 31.e4 Nf4 32.Kf1-+) 31.f4 (31.Bc3 Bh5 32.g4 Nd5-+) 31...Nc6! 32.Kf2? (32.Nc6 Bb2 Pinning (32...Bb2 Deflection)) 32...Nd4 (better 32...Ra2 33.Nc6 Rb2 (33...Bb2?! 34.Rd2 Bc1 35.Ra2 Ba2 36.f5-/+) 34.Kg1 Bd5-+) 33.ed4 (33.Bd4 Ra2 34.Kg3 Bd4 35.ed4-+) 33...Ra2 34.Rd2 Rb2! (34...Rb2 35.Rb2 Bd4 36.Ke2 Bb2-+) 0-1. upep (2035) - Mersey (1970), Rated Blitz game, lichess.org, 2013.

7.Be2 Nbd7 8.Nc3 0-0 9.h3 Bf3 (9...Be6 10.d4=) 10.Bf3+= Nc5 (10...Rb8!?+=) 11.d4+/- Ne6 12.de5 Nd7 (better is 12...de5!? 13.Bb7 Rb8 14.Qd8 Rfd8+/-) 13.Bb7 Rb8 14.ed6 Bd6 15.Bc6 (15.Bd5!? Nb6+–) 15...Ne5 16.Qe2 (16.Be4!?+–) 16...Nc6+/- 17.bc6 Qh4 18.0-0 f5 (18...Rb6 19.Nd5 Rc6 20.Rac1+/-) 19.Nb5 Rb5?? (better is 19...Qe4+/-) 20.cb5+– f4 21.Qc4 Qh6 22.ef4 Rf4 (22...Kh8 23.f5! Nf4 24.f6 gf6 25.g3+–) 23.Qd5 Kf8 (23...Qg6 24.Rae1 Kf7 25.b6+–) 24.b6! Ng5 (24...cb6 25.Qd6 Deflection) 25.b7 (better is 25.g3!? Qh5 26.b7 Nh3 27.Kh2 Qd5 28.b8Q Kf7+–) 25...Nh3 26.gh3 Rg4 27.Qg2 Rg2 28.Kg2 Qg5 29.Kh1 Qf6 (29...Qb5 30.Rab1 Kf7+–) 30.Bf6 1–0. emeryt85 – kwa123, kurnik, 2011.

7.Be2= Nbd7 8.d4 0-0 (8...e4 9.Nfd2 Be2 10.Qe2=) 9.de5 de5 10.Ne5 Bb4 11.Nd2 (11.Kf1 Be2 12.Ke2 Bd6 13.Nd7 Nd7=) 11...Nc5 (11...Ne5!? 12.Be5 Ne4 13.Bg4 Nd2=+) 12.f3+= Bf5 13.Rc1 (13.e4 Na4 14.Ba3 Nc3=+) 13...Re8 (13...Nh5 14.Rf1 f6 15.Ng4=+) 14.g4 (14.e4 Be4 15.fe4 Nfe4 16.0-0 Qd2 17.Bd4-+) 14...Bg4 15.fg4 (15.Ng4?? Ng4 16.fg4 Qh4 17.Kf1 Qh3 18.Kg1 Qe3 19.Kg2 Qe2 (19...Qd2?! 20.Rc2 Qh6 21.Bf3-+) 20.Qe2 Re2 21.Kf3 Rd2-+ (21...Bd2?! 22.Ke2 Bc1 23.Bc1-/+)) 15...Nfe4 16.Nef3? (16.0-0 Bd2 (< 16...Qd2 17.Bd4-/+) 17.Nf7 Be3 18.Kg2 Qh4-/+) 16...Nd2 (16...Bd2 17.Kf1 Bc1 18.Qd8 Rad8 (18...Bb2?! 19.Qc7 Rac8 20.Qf4=) 19.Bc1 Nd3-+) 17.Nd2?? (17.Kf2 Qe7 18.Bd4 Rad8-+) 17...Ne4 (better is 17...Qh4 18.Kf1 Qh3 19.Kg1 Qe3 20.Kg2 Qe2 (20...Qd2?! 21.Rc2 Qh6 22.Bf3-+) 21.Qe2 Re2 22.Kf3 Rd2-+ (22...Bd2?! 23.Ke2 Bc1 24.Bc1-/+)) 18.0-0 Bd2 19.Rc2 (19.Ra1 Qg5 20.Kg2 Rad8-+) 19...Be3 (19...Qg5!? 20.Kg2 Rad8 21.Rf5 Qe3 22.Rf3-+) 20.Kg2-/+ Qh4 (20...Qg5!? 21.Qd5 Qg6-/+) 21.Qd5=+ Ng5 22.Qb7 Qh3 (22...Bc5!? 23.Kh1 Ne4-/+) 23.Kh1= Ne4 24.Qc7?? (better is 24.Be5! Nf2 25.Rf2 Bf2 26.Qf3=+) 24…Ra7-+ (25.Qe5 Re5 26.Be5 Re7-+) 0-1. Bechler,G - Joachim,Guenther, corr DDR/I/201, 1965.

7.h3 Bh5 8.d3 Nbd7 9.g4 Bg6 10.Nh4 Nc5 11.Ng6 hg6 12.Bg2 g5 13.d4 ed4 14.ed4 Ne6 15.Bb7 d5 16.Bc6 Kf8 17.cd5 Nd5 18.Qf3 Nef4 19.Ba8 Qa8 20.Nc3 Bb4 21.Kd2 Qa7 22.Kc2 Bc3 23.Bc3 Qb6 24.a4 Qg6 25.Kd2 c6 26.Ba5 Qd6 27.Kd1 Rh6 28.Qa3 Qa3 29.Ra3 cb5 30.ab5 Re6 31.Re1 Rd6 32.Bb4 1–0. Machete99 (2280) – Cizzi (2140), ICC, 2002.

6.a4 c6 7.Nf3 cb5 8.ab5 b6 (8...Be7 9.Be2=) 9.Be2 Nbd7 10.0-0 Nc5 (10...h6 11.Nc3+=) 11.d4+– ed4 (11...Nce4 12.Ra4+–) 12.Nd4 (12.Qd4?! Be7 13.Nbd2 0-0+=) 12...Bg6 (12...Be4 13.Nc3+–) 13.Bf3 (13.Nc6 Qc7 14.Bf6 gf6+–) 13...Rc8 (13...Nce4!?+–) 14.Nc6 Rc6 (14...Qc7 15.Bf6 Bb1 16.Qb1 gf6+–) 15.Bc6 Nfd7 16.Nc3 (16.Nd2 Qc7+–) 16...Be7 (16...Bd3 17.Re1+–) 17.Nd5 0-0 18.Ne7 (18.Bd7!? Nd7 19.Qd4 Bf6 20.Nf6 Qf6+–) 18...Qe7 19.Qf3 (19.Bd5!? Nf6+–) 19...Ne5 20.Be5 de5 White creates threats along the open d–file 21.Rfd1 (21.e4 Qf6+–) 21...f6 (21...Bc2 22.Rd2 Nb3 23.Rd7+=) 22.Qd5 (better 22.Ra2!?+–) 22...Bf7+= 23.Qd6 Qa7? (better 23...Qd6 24.Rd6 Bc4+–) 24.Bd5+– h6 25.Qc6 Bd5 26.Rd5 (better 26.cd5 Rd8 27.Rac1+–) 26...Re8?? (26...a4 27.Rd6 Rb8 28.Rad1+–) 27.Rd6 (better 27.Qe8 Kh7 28.Rd8+–) 27...Rb8 28.Rad1 a4 29.Rd8 Rd8? (better 29...Kh7+–) 30.Rd8 Kh7 31.h3 (31.Qc8 h5 32.g4 Qe7 33.gh5 Qd8 34.Qd8 Ne6 35.Qb6 Ng5+–) 31...a3? (31...Kg6 32.h4 h5 33.Rd6+–) 32.Ra8 (better 32.Qc8 Kg6 33.Qg4 Kh7 34.Qf5 g6 35.Qf6+–) 32...Qa4 (32...Qf7 33.Qd5 Qe7+–) 33.Ra4 Na4 34.Qd6 (34.Qe4 f5 35.Qf5 Kg8 36.Qe5 Nc5+–) 34...Nc5 35.Qb6 a2 36.Qa5 Nb3 37.Qa2 Nd2 38.Qd2 (38.Qd2 h5 39.b6 Kh6 40.b7 Kg6 41.Qd3 f5 42.b8Q e4 43.Qdd6 Kh7 44.Qe8 g5 45.Qdg6) 1–0. RichardSommer (2165) – Pandiculation (2105), lichess.org, 2020.

6.a4 Nbd7 7.Nf3 Be7 8.d4 0-0 (8...e4 9.Nfd2=) 9.de5 (9.Be2 ed4 10.Nd4 Bg6=) 9...de5=+ 10.Ne5 Nc5 (10...Bb4!? 11.Ke2 Re8 12.Nd7 Nd7=+) 11.Nc3= Bd6 12.Nd5 (12.Nd3 Nce4+=) 12...Nd5= 13.cd5 Qh4 14.g3? (better 14.Qd4!? Qd4 15.Bd4=) 14...Qb4-/+ 15.Qd2 Qd2 16.Kd2 Nb3 17.Kc3? (better 17.Ke2 Na1 18.Ba1-+) 17...Na1 18.Nc4 (18.Nd3 Bd3 19.Kd3 Nb3-+) 18...Nc2 (18...Bb4!? 19.Kd4 Nb3 20.Ke5-+) 19.Nd6 (19.f3 Bb4 20.Kb3 Ne1-+) 19...cd6 20.Bd3 (20.Bg2 Rfc8 21.Kb3 Bd3-+) 20...Bd3 (20...Rac8!? 21.Kd2 Bd3 22.Kd3 Nb4 23.Kd4-+) 21.Kd3 Nb4 22.Kd4 Rac8 (better 22...f5 23.Rc1-+) 23.e4 (23.Rc1 Rc1 24.Bc1 Rc8-+) 23...Rfe8 (23...f5!? 24.f3-+) 24.f3 (24.Rc1 Rc2 25.Rc2 Nc2 26.Kd3 Ne1 27.Kd4 Nf3 28.Ke3 Nh2-+) 24...f6 (24...Rc2 25.Bc3 Rc8 26.Bb4 ab4 27.Rb1 R8c4 28.Ke3 R4c3 29.Kf4 Rh2 30.e5 Rc4 31.Ke3 de5 32.Kd3 Rc3 33.Ke4 Re2 34.Kf5 Rf3 35.Kg4-+) 25.Rd1 (25.Rc1-+) 25...Rc2 26.Bc3 Rh2 (26...Rc8 27.Bd2-+) 27.Bb4 ab4 28.Rb1 Rh3 (28...Ra2 29.Rb4 Ra3 30.Rc4-+) 29.Rb4 Rg3 30.Rb3 (30.Ke3 f5 31.Kf2 Rh3-+) 30...h5 31.a5 h4 32.a6 h3 33.Rb1 (33.Rb2 ba6 34.b6 Rg2-+) 33...ba6 34.ba6 Ra8 35.Ke3 Ra6 36.Kf4 Rg2 37.Rh1 h2 38.Kf5 Kf7 (38...Kf7 39.Rc1 Rg5 40.Kf4 Rg1 41.Rc7 Kg6 42.Rc3 h1Q 43.Ke3 Re1 44.Kd4 Ra4 45.Kd3 Qf3 46.Kc2 Qe2 47.Kb3 Qa2) 0-1. zembelek (1990) - StefanNK (1925), Rated Blitz game, lichess.org, 2014.

6.a4 Be7 7.Nc3 0-0 8.Nf3 Nbd7 9.d4 ed4 (9...c6 10.Be2=) 10.ed4 (10.Nd4 Bg6=) 10...Re8 11.Be2 Nb6 12.0-0 Bf8 (12...d5 13.c5 Nc4 14.Bc4 dc4 15.Re1=) 13.h3 Qd7 14.Bd3 g6 15.Qd2 Bg7 16.Nh4 (16.Rae1!?=) 16...Bh3 17.gh3 Qh3 18.Qf4? (better 18.Ng2!? Ng4 19.Qf4-/+) 18...Nh5 (18...Qd3 19.c5 Nc4 20.Rad1-+) 19.Qh2? (19.Qf3 Qh4 20.Ne2-+) 19...Qg4 (better 19...Qd3 20.Rfd1 Qc2-+) 20.Ng2 Bd4 21.Rae1 (21.Nd1 Ng3 22.Re1 Re1 23.Ne1 Re8-/+) 21...Be5 (21...Ng3! 22.Re8 Re8 23.Qh4 Qh4 24.Nh4 Nf1 25.Kf1-+) 22.Re5-/+ de5 (better 22...Re5 23.Ne4 Rf5-/+) 23.Ne4? (23.Be2 Qe6 24.Qh4 Rad8=+) 23...Na4 (23...Rad8 24.f3 Qe6 25.Rd1-+) 24.Ba1 (better 24.Be5 h6 25.Re1-/+) 24...Nf4?? (better 24...Qf3 25.Ne3 Rad8-+) 25.Nf6+- Kg7 (25...Kf8 26.Ng4 Nd3 27.Qh7 Ke7 28.Qh4 Kd6+-) 26.Ng4 Nd3 1-0. zembelek (2090) - Maysam1362 (1930), Rated Blitz game, lichess.org, 2014.

6.a4 Be7 7.d4 ed4 8.Bd4=.

6.Nc3 c6 7.Rc1 cb5 8.cb5 Nbd7 9.h3 Be7 10.Nf3 (10.Qf3 Be6=) 10...0-0= 11.Be2 Rc8 12.0-0 Rc7 13.a4 Qb8 14.d4 e4 (better is 14...Qd8!?=) 15.Nh4+/- Be6 16.d5 Bd5 17.Nf5 (17.Nd5!? Nd5 18.Qd5 Bh4 19.Qe4+/-) 17...Nb6+= 18.Ne7 Re7 19.Ba3 Rd7 20.Nd5 Nfd5 21.Bg4 Rdd8 22.Qb3 f5 23.Be2 Kh8 24.Rfd1 Rc8? 25.Rd5+/- Nd5 26.Qd5 1–0. lican – meiasete67, kurnik, 2012.

6.Nc3 Nbd7 7.Qf3+= Be6 8.Qb7 g6 (8...Nc5 9.Qc6 Bd7 10.Qf3+=) 9.g3 (9.d4 Rb8 10.Qa6 ed4 11.ed4 d5+/-) 9...Bg7 10.Qg2 (10.Qc6 0-0+=) 10...0-0 11.Be2 Nc5 (11...a4 12.a3+=) 12.d4+/- ed4 13.ed4 Ncd7 14.d5 (14.Nf3 Nb6 15.d5 Ne4+/-) 14...Bf5+= 15.g4 Be4?? (15...Ne4 16.gf5 Nc3 17.fg6 fg6=) 16.Ne4+- Ne4 17.Bg7 (17.Qe4?! Bb2 18.Rb1 Re8+=) 17...Kg7 18.Qe4 Nc5 19.Qd4 Kg8 20.Nf3 Re8 21.Kf1 (21.g5 Qe7 22.Qd2 f5+-) 21...Re4 22.Qc3 Rg4 23.Nd2 (23.Re1 Re4+-) 23...Ne4 24.Ne4 Re4 25.Bf3 Re5 26.Re1 Re1 27.Qe1 f5 28.Rg1 Kf7 29.Qe6 Kf8 30.Bh5 Qe7? 31.Qe7 Ke7 32.Bg6 hg6 33.Rg6 Rh8 34.Kg2 Kf7 35.Rg3 Rh4 36.Rc3 (36...a4 37.c5+-) 1-0. Diener,Rudolf - Wiencek,Tadeusz Robert, corr ICCF T-375-19-G, 1975.

6.Nc3 Nbd7 7.Nf3 g6 8.Be2 Bg7 9.h3 h5 10.d4 0-0 11.de5 Ne5 12.Ne5 de5 13.Qb3 Ne4 14.Rd1 Qc8 (14...Qg5!? 15.g4 Qh4 16.Ne4 Be4=) 15.Nd5 Re8 16.Ba3 Kh7 17.Ne7 Qe6 18.Nf5 (better 18.g4!? Re7 19.Be7 Qe7 20.gf5 Qb4 21.Qb4 ab4 22.Bf3+=) 18...Qf5+= 19.Bf3 (19.0-0 Ng5+=) 19...Rad8 (19...Nf2 20.Kf2 e4 21.Rd5=+) 20.0-0?? (better 20.Rd8 Rd8 21.Qc2+=) 20...Nd2-/+ Black plans e4 21.Rd2 Rd2 22.Bb7 e4 (22...Qc2 23.e4-/+) 23.c5 (23.Bc1 Rd3 24.Qa4 Qc5=) 23...Red8 (23...Qe6-/+) 24.Qa4? (better 24.Bc1!? R2d3 25.Qc4=+) 24...Rc2?? (better 24...Ra2 25.Be4 Qc5 26.Bc5 Ra4-+) 25.Be4 (25.Be4 Rd4 26.Qd4 (26.Bf5?! Ra4 27.Bc2 Ra3+-; 26.ed4 Qe4 27.Qa5 Bd4=; 26.Bc2?! Ra4 27.Bf5 gf5+-) 26...Bd4 27.Bf5 Rc5 28.Bc5 Bc5 29.Be4+-) 1-0. carlos78 (2290) - lorono (1990), Rated Blitz game, lichess.org, 2015.

6.Nc3 Be7!? =.

6.d4 ed4 7.ed4 Nbd7 8.Nd2 Be7 (8...d5 9.Qf3 Bg4 10.Qe3 Qe7 11.Rc1+=) 9.Be2 (9.Qf3!? Be6 10.Qb7+=) 9...0-0 10.Ngf3 Re8 11.0-0 c5 (11...d5!?=) 12.Nh4+= Be4 13.d5 Bf8 14.f3 Bg6 15.Ng6 hg6 16.Qc2?? (16.Re1 Re7+/-) 16...Nh5?? (better is 16...Re2 17.Rae1 Qe7 18.Re2 Qe2–+) 17.Ne4 Nf4 18.Rae1 b6 19.g3 Nh3 20.Kg2 Ng5 21.Ng5 Qg5 22.Bd3 Ne5 23.f4 Nd3 24.Re8 (better is 24.Qd3!? Qh5 25.Qf3+/-) 24...Nf4= 25.Kf3?? (better is 25.Rf4 Re8 26.a3=) 25...Re8–+ 26.gf4 Qh5 27.Kg2 Re2 (27...Re2 28.Qe2 Qe2 29.Rf2 Qc4–+) 0–1. typ48 – misialo78 (1645), kurnik, 2013.

6.Nf3 c5 7.Nc3+= b6? (7...Nbd7!?+=) 8.Be2 (better is 8.Ne5!? de5 9.Qf3+–) 8...Nbd7 (8...Be7 9.0-0+/-) 9.d3 (9.0-0 h6+/-) 9...Qc7 (9...Be7 10.0-0+/-) 10.Nh4 (10.0-0 g6+/-) 10...Be6 11.Bf3 (11.0-0 g6+/-) 11...0-0-0 (11...Rc8 12.g4+/-) 12.g3 (12.Nd5 Qa7 13.g4 Kb8+/-) 12...h5 (12...g5 13.Ng2+=) 13.Ne4 (13.Bc6 g5 14.Nf3 g4+/-) 13...g6 (better is 13...Ne4!? 14.Be4 Nf6+=) 14.Ng5+/- Bh6 (14...Rg8 15.Bc6+/-) 15.Ne6+– fe6 16.Ng6 Rh7 17.Bc6 Nf8 (17...Rg8 18.Nh4+–) 18.Nh4 Bg5 (18...Rg7 19.Qc2+–) 19.Nf3 Qg7 20.Ng5 (20.h4 Bh6+–) 20...Qg5 21.Qf3 h4 22.0-0-0 Ng6 23.a4 d5 24.gh4 Nh4 25.Qg3 Rh5 26.Qg5 Rg5 27.f4 Rh5 28.Rdg1 Nf3? 29.Rg6 Rf8 30.Rg7 Ne8 31.Rg3 Nh4 32.Be5 Nf5 33.Rg6 Nc7 34.Bc7 Kc7 35.Re6 dc4 36.dc4 Ng3 37.hg3 (37.hg3 Rh1 38.Bh1+–) 1–0. algernon (2360) – vitorluiz (2375), net–chess.com, 2007.

6.Nf3 Nbd7 7.d4 e4 8.Nfd2 h5 (8...d5 9.Nc3=) 9.h4 (9.Be2 Be7+=) 9...d5 10.Ba3 Ba3 11.Na3 Qe7 12.Qb3 c6 (12...dc4 13.Qc3=+) 13.c5 (13.bc6 bc6 14.Be2 0-0=) 13...0-0 14.Be2 (14.Qa4 Rfc8=) 14...Bg4 15.Bf1 (15.f3 a4 16.Qc3 ef3 17.gf3 Bf5=) 15...Rfe8 (15...a4 16.Qc2=+) 16.b6 (16.Qa4 Rec8=) 16...Be6 (16...a4 17.Qc3=+) 17.Nab1 (17.0-0-0 Bg4 18.f3 a4=) 17...Ng4 18.Nc3 Qf6 19.Nd1 Nc5!-+ 20.Qa3 Nd7 21.Rb1 Rec8 22.Nb3 a4 23.Nc5 Qe7 24.Nc3 Ra5 25.Qb4 Rc5 26.dc5=+ Ra8 27.Be2 Nde5 28.g3 Qf6= 29.0-0 Qg6 30.Qd4 Qf5 31.Rb2 g5? 32.hg5+/- h4? 33.gh4+- Nf3 34.Bf3 Qf3 35.Qd1?? Qh3= 36.f3 Ne3-/+ 37.Qd2?? Qf1-+ 38.Kh2 Qh3 39.Kg1 Qg3 40.Kh1 Qf3 41.Kg1 Qg3 42.Kh1-+ Bg4 (43.Qe3 Qe3-+) 0-1. Stejskal,Drahoslav - Zeithaml,Radek, CZE-chT2a, 1996.

6.Nf3 Bg4 7.Be2 Nbd7 8.d4 ed4 9.Nd4 Be2 10.Qe2 g6 11.Nd2 Bg7 12.N2f3 0-0 13.0-0 Nc5 14.a4 Re8 15.Rfd1 Nce4 16.h3 Nd7 17.Qc2 Ndc5 18.Nb3 b6 19.Bg7 Kg7 20.Nbd4 Qf6 21.Nc6 h6 22.Nfd4 Ng5 23.Re1 Nce6 24.f3 Nd4 25.Nd4 Ne6 26.Nc6 Nc5 27.Rad1 Re6 28.e4 Rae8 29.Nd4 R6e7 30.Ne2 Qg5 31.Rd5 Re5 32.f4 Qh4 33.g3 Qh3 34.fe5 de5 35.Qc3 f6 36.Qf3 Re7 37.Rf1 Rf7 38.Re5 Nd7 39.Rd5 Ne5 40.Re5 Qd7 41.Rd5 Qe7 42.e5 f5 43.Nd4 Qb4 44.e6 Re7 45.Qf4 Qc4 46.Qe5 Kh7 47.Nc6 Qc5 48.Rc5 bc5 49.Ne7 h5 50.Qg7 Kg7 51.Nf5 gf5 52.Rf5 Kg6 53.Rf4 h4 54.e7 Kg5 0-1. zembelek (2025) - Vakamb (1950), Rated Blitz game, lichess.org, 2014.

6.d4 ed4 7.Bd4 Bg7 =.

6.d4 Bg7 7.de5 de5 (better 7...Nfd7!?=) 8.Qd8+/- Kd8 9.Be5 Nbd7 10.Bc3 Nc5 11.Nf3 Bg4 (11...Bf5 12.Nd4+/-) 12.Be2 Bf3 13.Bf3 Nd3 (13...Kc8!? 14.Nd2+-) 14.Ke2 Nc5 15.Nd2 Rb8 (15...Ne8 16.Bg7 Ng7 17.Nb3+-) 16.Ba5 (16.Rad1 Kc8+-) 16...b6? (better 16...Nfd7+-) 17.Bc3 Ke7 18.Rhd1 Rhd8 19.a4 Bf8 (19...Ne8 20.Bg7 Ng7 21.Bd5+-) 20.a5 Nfd7 (20...ba5 21.Ba5 Ne6+-) 21.a6 1-0. ClayPigeons (2095) - jjad007 (2060), Rated Bullet game, lichess.org, 2021.

6.Be2 Bg7 7.d4 e4 (7...0-0 8.b6 ed4 9.bc7 Qc7 10.Qd4=+) 8.Nc3 0-0 9.d5 (9.f3 Re8=) 9...Nbd7=+ 10.Rc1 Nc5 11.Na4 Na4 (11...Bf5 12.Nc5 dc5 13.Qa4=) 12.Qa4= b6 13.Qc2 Re8 14.Bd1 Nd7 15.Bg7 Kg7 16.Nh3 Nc5 (16...g5 17.Be2=) 17.Nf4 Re5 (17...a4 18.0-0=) 18.0-0 Bd7 19.Qc3 Qf6 20.Be2 Rae8 21.Rfd1 Bc8 22.h3 (22.a3 Rf5=) 22...Qe7 (22...R5e7 23.Rd4=) 23.Rd2 Rh8 24.Qc2 Re8 ½-½. Waibel,Ulrich - Dodge,John, compuserve, 1995.

6.Nf3 Nbd7 7.Be2 Bg7 8.d4 0-0 9.0-0 c6 10.a4 (10.de5!? de5 11.Ne5 (worse 11.Be5 Ne5 12.Ne5 Ng4 13.Bg4 Be5 14.Bc8 Qd1 15.Rd1 Rac8–/+) 11...Ne5 12.Be5+–) 10...e4 (10...Qe7 11.Nc3+=) 11.Nfd2 d5 (11...Re8 12.Nc3+=) 12.Qc2 (better 12.Nc3+=) 12...Ne8 (12...Nb8 13.cd5 cd5 14.Nc3+=) 13.f3 (13.bc6!? bc6 14.cd5 cd5 15.Ba3+–) 13...f5 (13...ef3 14.Bf3 Ndf6 15.Nc3+=) 14.Qb3 (14.Ba3 Rf7+–) 14...Ndf6+= 15.cd5 (15.Nc3 ef3 16.Rf3 cb5 17.Nb5 Be6+–) 15...cd5 (15...Qd5?? 16.Bc4 Be6 17.Ba3 ef3 18.Bf8 Bf8 19.bc6 Qc6 20.Be6 Kg7 21.Nf3+–) 16.Nc3 Be6 (16...Bh6!? 17.Nd1 Nd6+=) 17.fe4+– Ne4 (17...Bh6 18.Rf3+–) 18.Nde4 fe4 19.Ne4! Nd6 (19...de4 20.Rf8 Double attack (20.Qe6 Pinning; 20.Qe6 Deflection; 20.Qe6 Decoy)) 20.Nc5 (20.Nc5 Bf7 21.b6+–) 1–0. GuestLWHG – zvnuhsnz, freechess.org, 2018.

6.Nf3 e4 7.Nd4 =.

6.f4 Nbd7 7.Nf3 Qe7 (7...e4 8.Nd4=+) 8.fe5 de5 9.Be2 Bg7 10.0-0 b6 (10...e4 11.Nd4 a4=) 11.d3 (11.d4 ed4 12.ed4 Ng4=) 11...e4 (better 11...Ng4!? 12.Qc1 Bh6-/+) 12.de4+= Qe4 13.Bd4 0-0 14.Nbd2 (14.Nc3 Qe7+=) 14...Qe7= 15.Qc2 Bb7 16.Bd3 Rfe8 17.Rae1 Nc5 18.Be2 Rad8 (18...Ng4 19.Bd1=+) 19.Qb2 Nh5 20.Qa1 (20.Qa3 f5=) 20...f5 (20...Qe3 21.Be3 Ba1 22.Bc5 bc5 23.Ra1 Re2 24.Rf2=+) 21.Bd1 Nf6 22.Ne5 (22.Bc2 Ng4 23.Qc3 Bh6=+) 22...Nfe4-/+ 23.Ndf3 Qe6 (23...g5 24.Nc6 Bc6 25.bc6-/+) 24.Nc6 Rd7 (24...Bc6 25.Bg7 Bb7 26.Be2=+) 25.Nfe5 Rd6 26.Be2 (26.Bf3 a4=+) 26...Bh6 (26...Nd2 27.Rf2-/+) 27.Bf3 Nd2 (27...Bc6 28.Nc6 Qc4 29.Be2=+) 28.Rf2 (better 28.Bc5!? Nf3 A) worse 29.Rf3 bc5 30.Qc1 A1) 30...Bc6?! 31.Nc6 Rd3 32.Kh1= (worse 32.Na5 Be3 33.Rfe3 Re3 34.Re3 Qe3 35.Qe3 Re3-+); A2) 30...Bg7 31.Na5 Be4-+; B) 29.Nf3 bc5 30.e4 fe4 31.Na5=+) 28...Nf3-/+ (28...Nc4 29.Bc5 Ne5 30.Bd6 Nf3 31.Rf3 Qd6 32.Rh3 Bc6 33.bc6=) 29.gf3 (better 29.Rf3!? Bc6 30.Nc6 Qc4 31.Qb1-/+) 29...Bc6-+ 30.Nc6 (better 30.Bc5 bc5 31.Nc6 Be3 32.Kg2 Qc4 33.a4-+) 30...Nd3 (30...Qc4?! 31.Qb1-/+) 31.Rfe2 Ne1 32.Qe1 (32.Re1 Qc4 33.a4-+) 32...Qc4 33.Kg2 (33.Bb2 Qb5 34.Nd4 Qd3-+) 33...Qb5 34.Ne5 Re5 35.Be5 Qe5 36.Qc1 (36.a4 Rd3 37.e4 fe4 38.Re4 Qf6-+) 36...Rd8 (36...Re6!? 37.a3-+) 37.h4 (37.Qc4 Kg7 38.f4 Qd5 39.Qd5 Rd5-+) 37...Kh8 38.Qc4 (38.Qe1 Rd3 39.e4 Bf4-+) 38...Be3 39.h5 (39.Qf7 f4 40.a4-+) 39...f4 40.hg6 hg6 (40...Qg5 41.Kh2 Qg3 42.Kh1 Qg1) 41.Re1 Rd2 (41...Qg5 42.Kh1 Qh4 43.Kg2 Qg3 44.Kh1 Qh3) 42.Re2 (42.Qe2 Qg5 43.Kh2 Qg3 44.Kh1 Qh3 45.Qh2 Qh2) 42...Qg5 43.Kh2 Qg3 (43...Qg3 44.Kh1 Qg1) 0-1. zembelek (2105) - alejandroo19 (2165), Rated Blitz game, lichess.org, 2013.

6.f4 e4 7.d4 (7.Nc3 Rg8=) 7...d5 (7...Bg7 8.Nc3=) 8.c5 (8.Nc3 Be6=) 8...c6 (8...Bg7 9.Be2+=) 9.b6 (9.Nc3 Bg7=) 9...Bg7 10.Be2 (10.Nc3 Be6=) 10...0-0+= 11.a4 h5 (11...Ng4 12.Qd2=) 12.Nd2 (12.Qd2 Bg4=) 12...Bg4 (12...Ng4 13.Qb3=) 13.Qb3 (13.Nb3 Nfd7=) 13...Na6 14.Bc3 (14.h3 Bf5=) 14...Be2+= 15.Ne2 Ng4 16.Nf1 f5 (16...Qh4 17.Neg3=) 17.h3 Nf6 (17...Nh6 18.Nd2+=) 18.Qb2 (18.Nd2 Kh7+=) 18...h4 (18...Nd7 19.Qd2=) 19.Qd2 Nh5 (19...Re8 20.g3+=) 20.0-0-0 (20.Rg1 Kh7+=) 20...Qe7 (20...Nf6 21.g3+=) 21.g4 (21.Ba5 Nc5 22.dc5 Qc5 23.Bc3 Ra4–+ (23...Qb6?! 24.Bg7 Ng7 25.Nc3+=)) 21...hg3 22.Nfg3 (22.Rg1 Kf7+=) 22...Ng3 23.Ng3 Nc5 24.dc5 Qc5 25.Ne2 Ra6 26.Kc2 Qc4 27.Ra1 Rb6 28.Rhb1 Rb1 29.Kb1 Qd3 30.Kc1= Qd2 31.Kd2 Bc3 32.Kc3 Rf7 33.Kd4 Rh7 34.Rh1 b6 35.Nc3 Rb7 36.h4 b5 37.ab5 cb5 38.h5 b4 39.Nd5 b3? 40.hg6 Rb8 41.Rh7 (41.Rh7 Rd8 42.Ke5 Rd5 43.Kd5+–) 1–0. Kjaerstad,Eivind J – Little,George A, corr NOR–ENG, 1969.

6.f4 ef4 7.ef4 Bg7 8.Nf3 =.

8.d3 Nbd7!?=+.

8.d3 Ng4 9.Be2= f5 (9...Nd7 10.0-0=) 10.0-0 Kh8 11.h3 Nh6 12.Nd2 Nd7 13.Rc1 Nc5 14.Nb3 (14.Qc2 Be6+=) 14...Ne6 15.d4 (15.Ba3 f4 16.e4 Nf7=) 15...e4 (better 15...a4!? 16.Nd2 ed4 17.ed4 Nd4=+) 16.d5 Ng5 17.Qd2 (better 17.b6!? cb6 18.Qd2+/-) 17...Nh3= 18.gh3 Qh4 (18...Qg5 19.Kh1 Qh4-/+) 19.f4?? (better 19.Na4+/-) 19...Qg3-/+ 20.Kh1 Qh3 21.Kg1 g5 22.Ne4? (better 22.Rf2 gf4 23.Rh2 (23.ef4?? e3 24.Rh2 ed2 25.Rh3 dc1Q 26.Nc1 Ng4-+; worse 23.Rf4 Rg8 24.Kf2 Be5-/+) 23...Qe3 24.Qe3 fe3 25.Na4 Bb2 26.Nb2-+) 22...fe4-+ 23.Bg7 (23.Na5?? Bb2 24.Qb2 Kg8-+; 23.fg5?? Qg3 24.Kh1 Qh4 25.Kg1 Qg5 26.Kh1 Qh4 27.Kg1 Rg8-+) 23...Kg7 24.Qd4 (24.fg5?? Qg3 25.Kh1 Qh4 26.Kg1 Qg5 27.Kh1 Qh4 28.Kg1 Bh3-+) 24...Kg8 25.Qe4 (25.fg5 Qg3 26.Kh1 Qh4 27.Kg1 Bh3 28.Qe4 Qe4 29.Rf2 Rf2 30.Kf2 Qh4 31.Kg1 Qg3 32.Kh1 Qg2) 25...Qg3 26.Kh1 (better 26.Qg2 Qe3 27.Kh1-+) 26...gf4?? (better 26...Bg4 27.Nd4 Qh4 28.Kg2 Rae8-+) 27.Rf4 (better 27.Rg1 a4 28.Nd4+-) 27...Rf4= 28.Qf4 Qh3 29.Kg1 Bf5 (better 29...Bg4 30.Qg5 Kh8 31.Qf6 Kg8 32.Qg5 Kh8 33.Qf6 Kg8 34.Qg5=) 30.Kf2?? (30.c5 Rf8 31.Qg5 (31.Na5 Bd3 32.Qg5 Kh8 33.Bd3 Ng4-+) 31...Bg6 32.Rf1+= (32.Na5 Rf5 33.Qg2 Qe3 34.Kh2 Rf2-+)) 30...Rf8-+ 31.Bf3?? (31.Kg1 Bd3 32.Qg5 Kh8 33.Bd3 Rg8 34.Qg8 Kg8-+) 31...Ng4 (better 31...Bg4 32.Rh1 Qf3 (32...Rf4?! 33.Rh3 Rf6 34.Rg3=) 33.Qf3 Rf3 (33...Bf3?! 34.Rh6 Bd5 35.Kg3 Bc4 36.Na5 Bb5 37.Nb7-+) 34.Ke1 Nf7 35.Na5 Re3 36.Kd2 Ra3-+) 32.Ke2?? (32.Ke1 h6 33.Be2 Nh2-+) 32...Ne5 (better 32...Bd3! 33.Kd3 Rf4 (33...Qf3 34.Qf3 Rf3 35.c5=) 34.Bg4 Rg4-+) 33.Rg1-/+ Kh8?? (better 33...Bg6 34.Bg4 Rf4 (34...Ng4?! 35.Qg4 Qh2 36.Rg2=) 35.Bh3 Rc4-/+) 34.Rg3?? (better 34.e4 Nf3 35.Qf3 Qf3 36.Kf3 Bd7 37.Ke3=) 34...Qh2 35.Rg2 Bd3 36.Kd2 Nf3 (better 36...Qf4 37.ef4 Nf3 (37...Rf4?! 38.Be2 Be2 39.Re2-+) 38.Kc3 Rf4 39.Na5 Ne5-+) 37.Kd3?? (better 37.Qf3 Rf3 38.Rh2 Bc4 39.Na5 Bd5 40.Kd3-+) 37...Qf4 (37...Rf4?! 38.Rh2 Ne5 39.Kd2 Rc4 40.Rf2-/+ (40.Na5?? Ra4 41.Kc3 Ra5-+)) 38.ef4 Rf4 (better 38...Ne1 39.Ke2 Ng2-+) 39.Ke3= Rf7 40.Rf2 (40.Na5 b6 41.Nc6 Nh4=) 40...Ne5= 41.Rf7 Nf7 42.Na5 b6 43.Nc6 Kg7 44.a4 Kf6 45.a5 ba5 46.Na5 Ne5 47.Kd4 h5 48.Nb3 (better 48.Nb7!?=+) 48...h4-+ 49.Nd2 (49.c5 h3 50.cd6 cd6=+) 49...h3 50.Nf1 Kf5 (better 50...Nf3 51.Ke3 h2-+) 51.c5=+ dc5 (51...Nd7!? 52.cd6 cd6=+) 52.Kc5= Ke4 53.d6 cd6 54.Kd6 Nc4 55.Kc5 Na5 56.b6 Kf3 57.Kb5 Nb7 58.Kc6 Na5 59.Kb5 Nb7 60.Ka6 Nd6 61.b7 Nb7 62.Kb7 Kg2 63.Ne3 Kf3 64.Nf1 Kf2 65.Nh2 Kg3 66.Nf1 Kg2 67.Ne3 Kg1 68.Ng4 Kg2 69.Ne3 ½-½. pacalmisu (2100) - ignacy_m (2170), Rated Blitz game, lichess.org, 2015.

8.d4 ed4 9.Nd4 c5 10.bc6 Nc6=.

8.Be2 Nbd7 9.0-0 Nb6 10.d4 ed4 11.ed4=.

8.Be2 Nbd7 9.0-0 Re8 10.d4 b6 (10...e4 11.Nd2+=) 11.d5 (11.de5!? de5 12.Qc2+=) 11...Nc5= 12.Na4 Ncd7 (12...Nfe4 13.Nc5 Nc5 14.Ne1=) 13.Rc1 (13.Qc2 Ra7+=) 13...Nf8 14.Qc2 Bf5 15.e4 (15.Qb3 N8d7=) 15...Bg4 (better 15...Be4 16.Qd2 N8d7=+) 16.h3 Bf3 17.Bf3 (worse 17.gf3 Nh5 18.Rfe1 Qg5 19.Kh2 Qf4 20.Kh1 Qh4=+) 17...h6 18.Rce1 N8h7 19.Bc1 Nd7 20.g4 (20.Be3!?+/-) 20...Qh4+= 21.Bg2 Ng5 (21...Bf6 22.Qd3=) 22.Qd3+/- h5 (22...Re7 23.Qg3 Qg3 24.fg3+/-) 23.gh5 (better 23.Qg3!? Qg3 24.fg3+-) 23...Qh5+= 24.f4 (24.Qg3 Bf6+/-) 24...ef4= 25.Bf4 Ne5 26.Be5 (26.Qg3 Nh7=) 26...Re5 27.c5 (27.Rf4!?=) 27...bc5 28.b6 cb6 (28...Re7!?-/+) 29.Nb6=+ Rae8 30.Nd7? (better 30.Nc4=) 30...R5e7-+ 31.Nf6 Bf6 32.Rf6 Kg7?? (better 32...Ne4 33.Rf4 f5-+) 33.Rd6= f6 (33...f5!? 34.Qc3 Kg8=) 34.Qc3+= Ne4 35.Be4 (35.Re4 Re4 36.Qf6 Kh6 37.Be4 Re4 38.Qf8 Kg5=) 35...Re4 (better 35...Qg5!? 36.Kh1 Re4-/+) 36.Qf6 (36.Re4 Re4 37.Qf6 Kh6 38.Qf8 Kg5=) 36...Kh6= 37.Re4 Re4 38.Qh8 Kg5 39.Qh5 gh5 40.Rc6 c4 41.d6 Rd4 42.Kf2 Kh4 (better 42...Kf6!?=+) 43.Ke3+= Rd3 44.Ke2 (better 44.Kf4 c3 45.Ke4+/-) 44...Kh3-/+ 45.Rc4 Rd6 46.Rc5 h4 47.Ra5 Rb6 (better 47...Kg4-/+) 48.Rg5? (better 48.a4=+) 48...Rb2-+ 49.Kf1 (49.Kf3 Ra2 50.Rh5 Ra8-+) 49...Ra2 50.Kg1 Ra1 51.Kf2 Ra3 (51...Kh2 52.Rg2 Kh1 53.Rg4 Ra2 54.Kf3-+) 52.Rg8? (better 52.Kg1-+) 52...Ra2 53.Kg1 Ra1 54.Kf2 Ra4 (better 54...Kh2-+) 55.Kg1 Rg4?? (better 55...Rd4 56.Rf8 Rg4 57.Kh1 Rb4 58.Rf3 Kg4-+) 56.Kh1 (better 56.Rg4 Kg4 57.Kg2=) 56…Rg8 ½-½. carlos78 (2165) - ShockWave (2025), Rated Blitz game, lichess.org, 2015.

8.Be2 Nbd7 9.0-0 h6 10.d4+= e4 (10...Qe7 11.Qc2+=) 11.Nd2 Re8 12.Qc2 Qe7 13.Rac1 (13.Rae1 Nb6+=) 13...b6 (13...c5 14.bc6 bc6 15.Rb1+=) 14.Qb1 (14.Nd5 Nd5 15.cd5 Bb7+=) 14...Bb7 15.Ba3 (15.Rfd1 Qe6+=) 15...Nh7 (15...Qe6 16.Qc2+=) 16.Na4 (16.Nd5 Qd8+=) 16...Qg5 (16...Nhf6 17.Bb2+=) 17.c5 dc5 18.dc5 Ne5 (18...Rad8!?+=) 19.c6 (19.Ne4 Qh4 20.Nac3 Ng4 21.Bg4 Qg4+/-) 19...Bc8 20.Ne4 (worse is 20.Qe4 Bf5 21.Qf4 Qf4 22.ef4 Nd3 23.Bd3 Bd3+=) 20...Qh4 21.Nec3 Nc4 (21...Nf6 22.Rcd1 Bf5 23.Qc1+/-) 22.Bc4 Qc4 23.Qb3 (better is 23.e4!?+/-) 23...Qb3= 24.ab3 Be6 ½–½. Sanz,JA – Stevenson,El, BCF–ch U18 Sunderland, 1966.

8.Be2 e4 9.Nd4=.

8.Be2 Re8 9.0-0=.

9.0-0 Bb7 10.d4 (10.d3 Nbd7 (10...c5 11.bc6 Nc6 12.Rb1 d5 13.Qb3 d4; 10...Re8 11.e4 Nbd7 12.Bc1 Nc5 13.Qc2 Qd7) 11.Re1 e4 12.Ne4 Ne4 13.Bg7 Nf2; 10.Qc2 c5 (10...Re8 11.d3 e4 12.de4 Ne4 13.Nd5 Bb2; 10...Nbd7 11.d4 ed4 12.ed4 Re8 13.d5 Nc5) 11.e4 Nbd7 12.a3 Ne8 13.Rae1 f5) 10...e4 (10...ed4 11.ed4 Re8 12.Re1+= d5 13.Rc1 Bh6; 10...Nbd7 11.d5 Nc5 12.Qc2 Bc8 13.e4 Nfd7; 10...Qe7 11.d5 Nbd7 12.e4 Nc5 13.Qc2 Nfd7) 11.Nd2 Qe7 (11...Qe8 12.Qc2+= (12.Kh1 Ra7 13.a3 Nbd7) 12...Nbd7 13.Rae1 Qe7) 12.d5 (12.Qc2 Re8+= (12...Nbd7 13.a3 Rfe8) 13.a3 Nbd7) 12...Re8 (12...Nbd7 13.a3 Nc5) 13.Qc2 Now all is on e4 (13.Qa4 Nbd7+=) 13...Bc8 (13...Nbd7 14.a3+=) 14.Nb3 (14.Rad1 Nbd7+=) 14...Qe5 (14...Qd7 15.Nd4+=) 15.Nd2 Qf5 (better 15...Qe7!?=) 16.Rab1+– Nbd7 17.f3 (17.Nce4!? Ne4 18.g4+–) 17...Qg5 18.Nd1 (18.f4 Qh4+=) 18...Nc5 (18...ef3 19.Nf3 Qh5 20.Ne5=) 19.fe4 (19.f4 Qh4+=) 19...Nce4 (19...Nfe4 20.Ne4 Ne4 21.Bg7 Kg7 22.Rb2=) 20.Ne4 (20.Bd3 Nd2 21.Qd2 Ng4=) 20...Ne4 21.Bg7 Kg7 22.Qb2 (22.Bd3 Nc5=) 22...Qe5 (22...f6 23.Bf3=) 23.Qe5 (23.Bf3 Nc5=) 23...Re5=+ 24.Rb2 (24.Rc1 Bd7=+) 24...h5 (24...Bd7 25.Bf3=+) 25.Bd3 (25.Bf3 Bf5=+) 25...Bg4 26.Nf2 Nc5 27.Ng4 (27.Be2 f5 28.Bg4 hg4=+) 27...hg4–/+ 28.Be2 (28.Rbf2 f5 29.Bf5 g3 30.hg3 Rf5 31.Rf5 gf5–/+) 28...f5 (28...Re3?! 29.Bg4 Rae8 30.Bd1=+) 29.h3 (29.Rf2 Rae8–+) 29...gh3–+ 30.gh3 Re3 31.Rf3 Rae8 32.Kf2 Rf3 33.Kf3 Re4 (33...g5 34.Rc2–+) 34.Bf1 (34.Rc2 g5–+) 34...Nd7 35.Re2 Re2 (35...Ne5 36.Kg2–+) 36.Be2 g5 37.Ke3 Kf6 38.Kd4 Ne5 39.Ke3 Ng6 40.Bf1 (40.Bd3 Ke5–+) 40...g4 (40...Ke5 41.Be2–+) 41.hg4 (41.Kf2 Ke5 42.hg4 fg4–+) 41...fg4 42.Kf2 (42.Be2 Kg5–+) 42...Ke5 43.Kg3 (43.Bd3 Nf4 44.Bf1 Kd4–+) 43...Kd4 44.Kg4 Ne5 45.Kf5 Nc4 46.Ke6 Ne3 47.Bh3 Nd5 48.Kd7 Kc5 49.a4 (49.Be6–+) 49...Nc3 50.Kc7 Na4 51.Be6 Nc3 0–1. Palacios Sanchez,Gabriel (2000) – Alonso Gonzalez,Carlos (2060), 20th Obert Internacional De Sant, 2008.

9.0-0 c5 A) 10.d4 Qe7 (10...cd4 11.ed4 e4 12.Nd2 Re8 13.Qa4 Bf5; 10...e4 11.Nd2 cd4 12.ed4 Re8 13.Re1 Qc7) 11.de5 de5 12.e4 Bg4 13.Ne5 Rd8; B) 10.d3 Re8 (10...Bb7 11.e4 Nfd7 12.Bc1 f5 13.Ng5 Re8; 10...Nbd7 11.Nd2 Bb7 12.Bf3 Bf3 13.Qf3 Qe7) 11.Nd2 Bb7 12.Nde4 Qe7 13.Bf3 Nbd7; C) 10.Qc2+= Qe7 (10...Bg4 11.d3 Nbd7 12.h3 Be6 13.Ng5 Ra7; 10...Qc7 11.Qd3 Bb7 12.e4 Nbd7 13.Rfe1 Nh5) 11.d4 e4 12.Ne1 Nbd7 13.Qd2 a4.

9.0-0 Nbd7 A) 10.Qc2 Nc5 (10...Re8 11.d4 ed4 12.ed4 Bb7 13.d5 Nc5; 10...Ra7 11.d4 Re8 12.Rfe1 Qe7 13.de5 Ne5) 11.d4 Bf5 12.Qd1 ed4 13.Nd4 Nfe4; B) 10.a3 Re8 (10...Qe7 11.d4 Re8 12.Qc2 Ra7 13.Rad1 e4; 10...Ra7 11.d4 Re8 12.de5 de5 13.Qc2 Nc5) 11.d4 Bb7 12.d5 Nc5 13.Qc2 e4; C) 10.d4 Re8 (10...Qe7 11.Qc2 Re8 12.de5 Ne5 13.Ne5 de5; 10...Bb7 11.Qc2 ed4 12.ed4 Re8 13.d5 Nc5) 11.de5 Ne5 12.Ne5 de5 13.Qd8 Rd8.

9.0-0 Re8 A) 10.d3 c5 (10...c6 11.d4 Qe7 12.Qa4 ed4 13.ed4 d5; 10...Ra7 11.d4 Nbd7 12.de5 de5 13.Qc2 Nc5) 11.Nd2 Bb7 12.Nde4 Qe7 13.Nf6 Qf6; B) 10.Qc2 c6 (10...Qe7 11.Rac1 c5 12.e4 Bg4 13.Qd3 Nbd7; 10...Nbd7 11.d4 ed4 12.ed4 Bb7 13.d5 Nc5) 11.d4 Bf5 12.Qa4 Qc7 13.Rad1 e4; C) 10.d4 Nbd7 (10...Qe7 11.de5 de5 12.Nd5 Nd5 13.cd5 Qb4; 10...ed4 11.Nd4 Bb7 12.Bf3 Ne4 13.Ne4 Be4) 11.de5 Ne5 12.Ne5 de5 13.Qd8 Rd8.

9.d3 A) 9...Nbd7 A1) 10.Nd2 Nc5 (10...Ra7 11.0-0 Re8 12.Bf3 Nc5 13.Nde4 Bf5; 10...Re8 11.0-0 Ra7 12.Bf3 Nc5 13.Nde4 Bf5) 11.0-0 Ra7 12.d4 ed4 13.ed4 Ne6; A2) 10.d4 Re8 (10...Qe7 11.0-0 Bb7 12.d5 Nc5 13.Qc2 a4; 10...Bb7 11.0-0 Re8 12.d5 Nc5 13.Qc2 e4) 11.0-0 Bb7 12.d5 Nc5 13.Qc2 e4; A3) 10.0-0 Re8 (10...Qe7 11.Nd2 Rb8 12.Rc1 Bb7 13.Bf3 Nc5; 10...Bb7 11.Qc2 Rc8 12.e4 Nc5 13.Bc1 Nfd7) 11.Ng5 Ra7 12.Bf3 h6 13.Nge4 Ne4; B) 9...c6 B1) 10.d4 Qe7 (10...ed4 11.Nd4 c5 12.Nf3 Bb7 13.0-0 d5; 10...Bb7 11.0-0 ed4 12.Nd4 c5 13.Nf3 d5) 11.0-0 Bf5 12.Rc1 c5 13.d5 e4; B2) 10.Rb1 Re8 (10...c5 11.0-0 Re8 12.Nd2 Bb7 13.Bf3 d5; 10...h6 11.0-0 Be6 12.bc6 Nc6 13.Qb3 Rb8) 11.bc6 Nc6 12.e4 Nh5 13.0-0 Nf4; B3) 10.0-0 Re8 (10...Bd7 11.Rb1 Re8 12.bc6 Nc6 13.Ba3 Bg4; 10...c5 11.Nd2 Bb7 12.Nde4 Qe7 13.Nf6 Qf6) 11.d4 Qe7 12.bc6 Nc6 13.a3 Bf5; C) 9...Re8 10.0-0 Nbd7 (10...c5 11.Nd2 Bb7 12.Nde4 Qe7 13.Bf3 Nbd7; 10...c6 11.d4 Qe7 12.Qa4 ed4 13.ed4 d5) 11.Ng5 Nc5 12.Bf3 Ra7 13.Nge4 Bf5.

9.d4 A) 9...ed4 A1) 10.Nd4 Bb7 11.Bf3 Bf3 12.Qf3 Nbd7 13.0-0 Ne5; A2) 10.Qd4 Re8 (10...Nbd7 11.Nd5 Re8 12.Rd1 h6 13.0-0 Bb7; 10...Bb7 11.Nd5 Nbd7 12.Rd1 Re8 13.0-0 Rc8) 11.Nd5 Nbd7 12.Rd1 Bb7 13.0-0 Re6; A3) 10.ed4 Re8 (10...d5 11.0-0 c6 12.Ne5 cb5 13.Nb5 Re8; 10...c6 11.0-0 Re8 12.Re1 Bg4 13.d5 Ne4) 11.0-0 Bb7 12.Re1 d5 13.Rc1 Bh6; B) 9...Qe7 B1) 10.Qa4 Nbd7 (10...Re8 11.de5 de5 12.0-0 Nbd7 13.Nd5 Nd5; 10...ed4 11.ed4 Re8 12.0-0 Bg4 13.h3 Bf5) 11.0-0 Re8 12.a3 ed4 13.ed4 Bb7; B2) 10.Qb3 Nbd7 (10...Re8 11.de5 de5 12.0-0 Nbd7 13.Nd5 Nd5; 10...ed4 11.ed4 a4 12.Qa3 Ne4 13.Nd5 Qd7) 11.0-0 Bb7 12.d5 Nc5 13.Qc2 e4; B3) 10.0-0 Bf5 (10...Re8 11.de5 de5 12.Nd5 Nd5 13.cd5 Qb4; 10...Rd8 11.Qa4 Bf5 12.Nd5 Nd5 13.cd5 Nd7) 11.Nd2 Re8 12.de5 de5 13.e4 Be6; C) 9...Nbd7 C1) 10.Qc2 Re8 (10...Bb7 11.0-0 ed4 12.ed4 Re8 13.d5 Nc5; 10...Qe7 11.0-0 Re8 12.de5 Ne5 13.Ne5 de5) 11.0-0 Ra7 12.Rad1 Qe7 13.de5 Ne5; C2) 10.de5 de5 (10...Ne5 11.Ne5 de5 12.Bf3 Ra7 13.0-0 Qe7) 11.0-0 Bb7 12.Qc2 e4 13.Nd4 Qe7; C3) 10.0-0 Re8 (10...Bb7 11.Qc2 ed4 12.ed4 Re8 13.d5 Nc5; 10...Qe7 11.Qc2 Bb7 12.d5 Nc5 13.e4 Bc8) 11.de5 Ne5 12.Ne5 de5 13.Qd8 Rd8.

7.Nc3 0-0 =.

7.d4 Nbd7 8.de5 Ng4 9.Be2 0-0 10.0-0 Nge5 11.Ne5 Ne5 12.Bd4 Re8 13.Nc3 c5 14.Be5 Be5 15.Rc1 Bf5 16.Qd2 Rb8 17.Nd5 Be4 18.Rcd1 b6 19.a4 Bg7 20.Bg4 h5 21.Bh3 Qg5 22.Qe2 Qd8 23.g3 Bd4 (23...h4 24.Bg2+=) 24.Bg2+/- Bf5 25.h3 Bg7 26.Qd2 Be5 27.f4 Bg7 28.Rfe1 Bd7 29.Kh2 Be6 30.Qd3 Bf5 31.Qf1 (31.e4 Bc8+/-) 31...Be6 32.Bf3 Qd7 33.Qg2 Qd8 34.Qe2 ½-½. fredbaraer (2005) - cramneck (2230), gameknot.com, 2021.

7.d4 e4 8.Nfd2 0-0 9.Nc3 Re8 10.Qc2 Bf5 (10...c5 11.dc5 (worse is 11.Nde4 Ne4 12.Ne4 cd4+=; worse is 11.Nce4 Ne4 12.Ne4 cd4+=) 11...dc5 12.Be2+=) 11.Be2 h5 12.0-0 Nbd7 13.a4 Qe7 14.Ba3 Nf8 15.Nd5 (15.c5 Ne6+=) 15...Nd5+=.

7.Be2 Nbd7 8.0-0 0-0 9.d4 Re8 10.a4 b6 11.de5 Ng4 12.Qd5 Rb8 13.Rd1 Nde5 14.Ne5 Be5 15.Be5 Re5 16.Qd4 h5? (better is 16...Qh4!? 17.Bg4 Qg4+=) 17.h3+– Qh4 (17...Ne3 18.Qe5! Nd1+– (18...de5?? 19.Rd8 Kg7 20.fe3+–)) 18.hg4 hg4 19.g3 Qh5 20.Bf1?? (better is 20.Nc3+–) 20...Bb7–+ 21.Bg2 Bg2 22.Kg2 Qh3 23.Kg1 Rh5 (better is 23...Kg7 24.Qg4 Qg4–+) 24.Qe4+– Qh2 25.Kf1 Rf5 26.Qg2 Qh8 27.Rd4 Re8 28.Ra3 Rh5 29.Nd2 Rh2 30.Qd5 Qh3 31.Kg1 Re5 32.Qa8 Kg7 33.Nf1 Rh5 34.Nh2 Qh2 35.Kf1 d5 36.Rd5 (36.Ke2!? Qh1 37.Rg4 Qb1+–) 36...Qh1 37.Ke2 Qf3 38.Kd3 Qd1 39.Ke4 Qf3 40.Kd4 Qd1 41.Rd3 Qa1 42.Ke4 Rh2 1–0. Hanscombe,Richard – Brown,Tom (2020), WLS–chT, 2007.

7.Be2 e4 8.Nd4 =+.

8.ed4 0-0 9.Be2 c5 10.bc6 Nc6 11.0-0 d5 12.c5 Bf5 13.Nc3 Ne4 14.Rc1 Nb4 15.a3 Nc3 16.Rc3 (worse 16.Bc3 Na2-/+) 16...Nc6 17.h3 (17.Rb3 Qc7+=) 17...Be4 18.Rb3 Qc7 19.Re1 Rfe8 20.Bf1 a4 21.Rb6 Na5 (better 21...Bf3!? 22.Re8 Re8 23.Qf3 Re4=) 22.Ng5 (22.Qa4?! Nc4 23.Re4 de4 (worse 23...Ra4 24.Re8 Bf8 25.Bc4 dc4 26.Rd6+-) 24.Qc4 ef3=) 22...Nb3 (22...Nc6+/-) 23.Ne4 (23.Bb5!? Re7 24.Ne4 de4 25.Ba4 Ra4 26.Rb3+/-) 23...de4+= 24.Bc4 Nc5?? (24...Nd4 25.Bd4 Rad8+/-) 25.dc5+- Bb2 26.Rb2 Qc5 27.Qd5 Qd5 28.Bd5 Rad8 29.Re4 Re4 30.Be4 Rd1 31.Kh2 Ra1 32.Rb7 (32.Bb7?! Ra3 33.Bc6 Ra1+-) 32...Ra3 33.Bd5 Rd3 34.Bf7 Kf8 (34...Kh8 35.g3+-) 35.f4 (35.Ra7 a3+-) 35...a3 36.Rb3?? (36.Ra7 Re3+-) 36...Rd4?? (better 36...a2 37.Rd3 a1Q=) 37.Be6+- Ra4 38.Rb1 (38.Rb8!? Ke7 39.Ba2 Kd6+-) 38...Rf4 39.Rb8 Ke7 40.Bg8 (40.Ba2 Rf2 41.Bg8 Rf8 42.Rb7 Kd6 43.Bh7 Ra8+-) 40...Rf8 41.Rf8 Kf8 42.Bb3 (42.Bh7?? Kg7 43.Bg6 Kg6-+) 42...Ke7 43.Kg3 Kf6 44.Kg4 h6 45.h4 h5 (45...Ke5 46.Kf3+-) 46.Kf4 1-0. jhonores (2205) - alexrazumovich (2235), Rated Blitz game, lichess.org, 2020.

8.Qd4 0-0 9.Be2 Nbd7 10.0-0 Nc5 11.Rd1 Bd7 12.Ne1 Na4 13.Bc3 Bf5 14.Rc1?? Bb1 15.Rab1–/+ Ne8 (15...Nc3 16.Rc3 Ne8 17.Qd3 Bc3 18.Qc3–/+). Adam – Leu, corr, 1972.

8.Bd4 0-0 9.Bd3 Nbd7 10.Nbd2 (10.0-0 Nc5=) 10...Re8 (10...Nc5 11.Be2=) 11.0-0 Nh5 (11...Ne5 12.Be2=) 12.a4 (12.Ne4 Ne5+=) 12...Nc5 13.Bc2 Bg4 14.h3 Bd7 15.Ra3 Ne6 16.Re1 Qe7 17.Rd3 Qf8 18.Nb3 Bd4 19.Nfd4 b6 20.Qf3 Ng5 21.Qb7 Rac8 22.Nc6 Nh3 23.gh3+– Bh3 24.Ncd4 Qe7 25.Nf3 Qf6 26.Nbd4 g5 27.Qd5 h6 28.Rd2 Ng7 29.Kh2 Be6 30.Ne6 fe6 31.Qe4 Nf5 32.Nd4 Nd4 33.ed4 Re7 34.Qg6 Qg6 35.Bg6 Kg7 36.Bf5 Rce8 37.Bg4 Kg6 38.Kg3 h5 39.Bf3 Rf8 40.Bd5 Rf6 41.Rde2 Kf7 42.f3 Re8 43.Bc6 Re7 44.Re4 Kg6 45.Rh1 Ref7 46.Re3 Re7 47.Be4 Kh6 48.Re2 h4 49.Kg2 Rf4 50.c5 d5 51.Bd5 Rd4 52.Re6 Re6= 53.Be6 Ra4? 54.cb6+/- cb6 55.Rc1 Rb4 56.Rc6 Kg7 57.Rb6 (57...Kf6 58.Bd7 Ke7 59.Bg4+/-) 1–0. Diener,Rudolf – Leu,Manfred, corr DDR, 1985.

8.Bd4 0-0 9.Bd3 Re8 10.0-0 Nbd7 11.Nc3 c5 12.bc6 bc6 13.Rb1 c5 14.Bf6 Nf6 15.Bc2 Be6 16.Qe2 Rb8 17.Rb8 Qb8 18.Qd3 Bf5 19.Qd2 Bg4 (19...Be6 20.Rb1 Qc8 21.Bb3=) 20.Rb1 Qd8 21.Ng5 h6 22.Nge4 Ne4 23.Ne4 Bf5 24.Nc3 Bc2 25.Qc2 Qd7 26.Nd5 Kh7 27.Rb5 Qa7 28.Qb1 Rf8 29.a4 Be5 30.f4 Bg7 31.f5 Qd7 32.f6 Bh8 33.Ra5 Qe6 34.Qf1 Rb8 35.Ra7 Qe8 36.a5 Ra8? 37.Ra8 Qa8 38.Qa1 Qa6 39.Qa4 Qb7 40.Qb5 Qc8 41.a6 Qg4 42.h3 Qd1 43.Kh2 Qa1 44.Qb7 Bf6 45.Nf6 Qf6 46.a7 Qe5 47.g3 Kg7 48.a8Q Qe3 49.Qa1 Qe5 50.Qe5 de5 51.Qe7 e4 52.Qe4 Kf6 53.Qc6 Kg7 54.Qc5 f5 55.Qe7 Kg8 56.c5 f4 57.c6 Kh8 58.c7 fg3 59.Kg3 h5 60.c8Q 1–0. orane (2085) – Caissa (1815), Live Game Caissa's Web, 2004.

8.Nd4 0-0 9.Nd2 Nbd7 10.Rc1 Nc5 11.Be2 Bd7 12.0-0 Re8 13.Qc2 Ng4 14.h3 Nh6 15.Qb3 Ne4 16.Bf3 f5 17.c5 d5? (17...Nf7 18.Be4 fe4 19.cd6+=) 18.c6 (Better is 18.Ne4!? fe4 19.Be4+–) 18...bc6+= 19.Nc6 Qg5?? (19...Bc6 A) < 20.bc6 Rb8 (20...Nd2 21.Bd5 Kh8 22.Bg7 Kg7 23.Qc3 Qf6 24.Qd2+–) 21.Bg7 Rb3 (21...Kg7?! 22.Qa4+=) 22.Bh6 Rb2 23.Ne4 fe4–+ (23...Re4?! 24.Be4 fe4 25.f3–+); B) 20.Rc6 Bb2 21.Qb2+/-) 20.a4?? (Better is 20.Qd5 Be6 21.Ne4+–) 20...f4?? (20...Nf7 21.Rfd1 Bb2 22.Qb2 Bc6 23.Rc6+/- (23.bc6?! Red8=)) 21.Bg7 Kg7 22.ef4 Qf4 23.Be4 Re4?? 24.Qd5 (24...Bc6 25.Qc6+– (25.Rc6?! Ra4 26.g3 Rd4 27.Rc7 Qc7 28.Qd4 Kf8+–; < 25.bc6 Rd4 26.Qf3 Qd2–/+); Better is 24.Ne4!? de4 25.Qc3 Qf6+–) 1–0. Fehr,Wolfgang – van Venetie,Koen, CiF GT–98–0041A, 1998.

8.0-0 c6 9.a4 Re8 10.d3 Bg4 11.Nbd2 h6 12.Rb1 Nbd7 13.Bc3 c5 (13...Nc5 14.bc6 bc6 15.Qc2=) 14.h3 Be6 15.Nb3 (15.Qc2 Qc7=) 15...b6 16.Nfd2 d5 17.cd5 Nd5 18.Bb2 Nb4 19.Nc4 Qc7 20.Bc3 Rad8 21.Nc1 (21.Qe1 Bf5 22.Rd1 Nb8=) 21...Nf8 (21...Bc4 22.dc4 Nf6 23.Qb3=+) 22.Qb3 Kh7 23.Rd1 f5 24.Qb2 Nd3?? (better 24...Bd5=) 25.Bd3?? (better 25.Rd3!? Bc4 26.Rd8 Qd8 27.Bc4 Qd1 28.Kh2+-) 25...Rd3?? (better 25...Bc4 26.Rd2 Be6-/+) 26.Nd3+/- e5 becomes the focus of attention 26...Bc4 27.Rbc1 Bf7 28.Ne1 Qe7 29.Rd2 Qf6 Black plans f4 30.Rcd1 f4 (30...Qh4 31.f4! Qg3 32.Nf3+/-) 31.Nf3 (31.e4 g5+-) 31...fe3 (31...Qf5 32.ef4 Qf4 33.Rd6+/-) 32.fe3 Qf5 33.Rf1 (33.Rf2 Qe4+/-) 33...Bc4 34.Rff2 Qe4 35.Rd6 Qe3 36.Qd2 Qd2 (better 36...Qf4!?+/-) 37.Nd2+- (37.Rdd2? e4 38.Bg7 Kg7-+ (38...ef3 39.Bf8 Rf8 40.Rd6+/-)) 37...Bd3? (better 37...Ba2 38.Rb6 Re7+-) 38.Rd3 e4 (38...Re7+-) 39.Re3 (better 39.Rf7 Kh8 40.Rg7 ed3 41.Rg6 Kh7 42.Rg7 Kh8 43.Re7 Kg8 44.Re8+-) 39...Bc3 40.Rc3 e3 41.Re2?? (better 41.Rf8 ed2 42.Rf1+-) 41...ed2+/- 42.Rd2 Ne6? (better 42...Re6+/-) 43.Re3+- Ng7 (43...Kg7 44.Rd6 Kf7 45.Rb6+-) 44.Re8 Ne8 45.Rd7 Kg8 46.Rb7 c4 47.Rb6 Kf7 48.Rc6 Ke7 49.Rc4 Nd6 50.Rc7 Ke6 (50...Kd8 51.b6+-) 51.b6 Kd5 52.b7 Nb7 53.Rb7 Kc5 54.Rb5 Kc4 55.Ra5 Kc3 (55...Kb4 56.Ra6 g5 57.Rh6 Ka4 58.Rh5+-) 56.Ra6 g5 (56...Kb4+-) 57.Rh6 Kb4 58.Rg6 Ka4 59.Rg5 Kb4 60.Rg4 Kc5 61.h4 Kd5 62.h5 Ke5 63.h6 Kf5 64.h7 (64.Rg8 Ke5 65.h7 Ke6 66.h8Q Kf5 67.Qh5 Ke4 68.Rg4 Kd3 69.Qc5 Ke2 70.Qc2 Ke3 71.Re4) 64...Kg4+- 65.h8Q Kg3 1-0. pacal56 (2270) - mecker (2250), Rated Blitz game, lichess.org, 2014.

8.0-0 Be6 9.Nc3 c6 (9...h6 10.d4 Nbd7 11.Qc2=) 10.a4 (10.d4 Nbd7+=) 10...Nbd7= 11.Qc2 (11.d4 Rc8=) 11...Rc8 12.d3 (12.d4 ed4 13.Nd4 Nb6 14.bc6 bc6 15.Ne6 fe6=) 12...Ne8 (12...d5 13.d4=) 13.Ne4 (13.Rfb1 Nef6+=) 13...h6= 14.Ned2 (14.Ba3 Qc7=) 14...f5 (14...d5 15.Ba3 c5 16.cd5 Bd5 17.Bb2=) 15.Bc3 (15.Rfb1 c5=) 15...g5 (15...b6 16.bc6 Rc6 17.Rab1=) 16.Nb3 (16.bc6 Rc6 17.Rab1 Qc7+=) 16...b6= 17.Nfd2 (17.bc6 Rc6 18.Rab1 d5=) 17...g4 (17...d5 18.bc6 Rc6 19.Rab1=) 18.d4 (18.bc6 Rc6 19.d4 Qc7+=) 18...cb5 (18...Qc7 19.Rfb1+=) 19.ab5 f4 (19...Qc7 20.Rfc1+=) 20.d5+/- f3 21.gf3 (21.Bf3 gf3 22.de6 fg2 23.Kg2 Ndf6+/-) 21...gf3+= 22.Bf3 (better is 22.Nf3!? Bh3 23.Rfc1+=) 22…Bh3+= (22...Bh3 23.Bg2 Qg5+=). Sternik,Ryszard – Kedzia,Tadeusz, Olsztyn Poland, 1986.

8.0-0 Bf5 9.Nc3 Re8 10.Nh4 Qd7 (10...Be6 11.Nf3=) 11.f4 Ne4 (11...e4 12.Nf5 Qf5 13.g4+=) 12.Ne4 (12.Nf5 Qf5 13.Nd5 ef4 14.Bg7 Kg7 15.Nc7 Qe5 16.Na8 fe3+-) 12...Be4+= 13.d3 Bf5 (13...Qe7 14.g3 Bf5 15.Nf5 gf5 16.fe5 Be5 17.d4+/-) 14.e4 Qe7 15.Nf5 gf5 16.fe5 fe4 17.d4 (better is 17.Bh5!? Rf8 18.ed6+-) 17...de5= 18.Bh5 Rf8 19.de5 Qg5 20.Bf7 Rf7 21.Rf7 Kf7 22.Qd5 Ke8?? (22...Kg6 23.Qe4 Kh6+-) 23.Qg8+- (23...Bf8 24.Qg5 Bc5 25.Kf1+-) 1-0. Frenzel,Lothar - Hasler,Ulrich, corr SOK-88-25, 1988.

8.Nc3 e4 9.Nd4 =+.

8.Nc3 Re8 9.d3 (9.0-0 e4 10.Nd4 c5=) 9...Nbd7 (9...Bf5 10.0-0=) 10.0-0 Nc5 11.d4 ed4 12.ed4 (12.Qd4 Nfe4 13.Qg7 Kg7 14.Ne4 Kf8–/+) 12...Nce4 13.Re1 Nc3 (13...Bf5 14.Qa4=) 14.Bc3 Ne4 15.Bb2 b6 (15...Bf5 16.Qa4=) 16.Nd2 Bb7 17.Ne4 Be4 18.f3 (18.Bg4 d5 19.f3 Bf5 20.Bf5 Re1 21.Qe1 gf5+/-) 18...Bf5= 19.Bf1 (19.f4 Qf6=) 19...Qh4 20.Qd2 Bh6 (20...a4 21.Be2=) 21.Qc3 (21.Qf2 Qf6=) 21...Bg7 22.g3 Qg5 (22...Qf6 23.Bg2=) 23.Bg2 Rad8 24.Rad1 h5 (24...a4 25.f4 Qf6 26.Qf3=) 25.Bc1 (25.f4 Qf6+=) 25...Qf6 26.h4 (26.Be3 h4=) 26...Re1 (better is 26...Qd4! 27.Qd4 Bd4 28.Kh2 Bf2–/+) 27.Qe1= Qe6 (27...d5 28.Bg5 Qd6 29.Bd8 Qd8 30.c5+–) 28.Qe6+= Be6 29.Bf1 (29.d5 Bf5+=) 29...Re8 (29...d5 30.Bg5 Re8 31.Kf2=) 30.Kf2 Bf5 (30...Kf8 31.Be3+=) 31.Be3+= Bf6 32.c5 bc5 33.dc5+= dc5 34.Bc5 Re5 35.Be3 a4 36.Rd4 a3 37.Ra4+/- Be7 38.Ra8 Kh7 39.Bd4 Bc5 40.Bc5 Rc5 41.Ra3 Rc2 42.Ke3 Be6 43.Bd3 Ra2 44.Ra2 Ba2 45.Kd4 Be6 46.Bc4 Bd7 47.Bf7 Bb5+= 48.Kc5 Bd7 49.Bd5 Kg7 50.Bc6 Bc8 51.Be8 Bb7 ½–½. Kleiser,Gregor (2095) – Kostka,Alexander, Vienna op–C, 1996.

8.d4 ed4 9.Bd4 c5 +=.

8.d4 ed4 9.Bd4 Nbd7 =.

6.ed4 g6 7.Bd3 Bg7 8.Qe2 Qe7 9.Qe7 Ke7 10.c4 Re8 11.Ne2 Kf8 12.0-0 (12.Nd2 Bh6=) 12...Bf5+= 13.Nf4 Bd3 14.Nd3 Nbd7 15.Nc3 (15.Nd2!?=) 15...Nb6–/+ 16.c5 Nc4 17.cd6 cd6 18.Rfe1 (18.Rac1 Nb2 19.Nb2 Rac8–/+) 18...Rac8 (18...Ng4!? 19.Ne2 Nb2 20.Nb2 Rac8–+) 19.Bc1 Nd7 20.Ne2 (better is 20.Re8 Re8 21.Kf1–/+) 20...Bd4?? (better is 20...Nc5 21.Ne5 Ne5 (21...de5?! 22.dc5 e4 23.Rb1–/+) 22.de5 Nd3–+) 21.Nd4+– Re1 22.Ne1 Nc5 (22...Kg7 23.g3+–) 23.Bh6+– Ke7 24.g3 f6 25.h4 Kf7 26.Bf4 (26.Rd1 a4+–) 26...Ne4 (26...Re8+/-) 27.Rc1+– g5 (27...d5 28.Nd3+–) 28.hg5 fg5 29.Be3 (29.f3 gf4 30.fe4 fg3+–) 29...g4 (better is 29...d5+–) 30.Nd3 Kf6 31.Ne2 d5 (31...Ke7 32.Ndf4+–) 32.Ndf4 Ke5 (32...Kf7+–) 33.Rd1 (33.Bd4 Kd6 34.Kg2 Rf8+–) 33...Rd8?? (33...Ne3 34.fe3 Nc3+–) 34.Bd4 Kd6 (34...Kf5 35.Ba1 Ne5 36.Nd5 Nf3 37.Kg2+–) 35.Bc3 (35.Nd5!? Ncd2 36.Bb6 Rc8+–) 35...Nc3 36.Nc3 Nb6 37.Ncd5 (37.Ncd5 Nd5 38.Rd5 (38.Nd5?! Kc5 39.Rc1 Kb5+–) 38...Ke7 39.Rd8 Kd8 40.Nd5+–) 1–0. Balcan,Ionel – Voiteanu,Gabriel (2105), ROM–ch sf Sovata, 2001.

6.ed4 Be7 7.Be2 0-0 8.Nf3 c6 9.c4 cb5 10.cb5 Bg4 11.0-0 Nbd7 12.h3 Bf3 13.Bf3 Rb8 14.Na3 d5 15.Nc2 Nb6 16.Ne3 h6 17.a4 Rc8 18.Qb3 Bb4 19.Rac1 Rc1 20.Rc1 Bd2 21.Rc5 Be3 22.Qe3 (22.fe3 Re8=) 22...Nc4 (better is 22...Na4!? 23.Rc2 Nb2 24.Rb2 Qb6–/+) 23.Qc3 Re8 24.Bc1 Re6 25.Bf4 b6 26.Rc6 Qe8 27.g4 (better is 27.Re6!? Qe6 28.Be5=) 27...Rc6–/+ 28.bc6 Qc6 29.Kg2? (29.Qc2 Ne4–/+) 29...b5 (better is 29...Qa4!? 30.Be5 Ne4–+ (30...Ne5?! 31.de5 Nd7 32.Qc8 Nf8 33.Bd5–/+)) 30.ab5–/+ Qb5 31.Be5 a4 (31...Ne5 32.de5 Nd7 33.Qc8 Nf8 34.Qd8–/+) 0–1. typ48 – skok48, kurnik, 2013.

6.Qd4 Be7 7.Nf3 0-0 8.c4 (8.Bd3 Nbd7=) 8...c5 (8...Nbd7 9.Nc3=) 9.Qc3 Bf5 10.Bd3 Bd3 11.Qd3 d5 12.Nc3 dc4 13.Qd8 Rd8 14.Ne5 Nbd7 15.Nc4 Nf8 (15...h5 16.Ke2+=) 16.Ke2 Ne6 17.Rad1 Ng5 (17...a4 18.Nb6 Ra5 19.Nba4+=) 18.Rd8+– Bd8 19.Rd1 Nge4? (better 19...a4+–) 20.Na4+– Be7 21.f3 Ng5 22.Bf6 Bf6 23.Nd6 1–0. Silent Move (2115) – Paul89 (2060), redhotpawn.com, 2015.

6.Qd4 Be7 7.Nf3 Nbd7 8.Bd3 b6 (8...Nc5 9.0-0=) 9.0-0+= Bb7 10.Nbd2 Nc5 11.Rae1 Ne6 12.Qh4 Nd5 13.Qg3 Bf6 14.e4 (14.Bf6 Qf6 15.Ne4 Qe7+=) 14...Ndf4 (14...Bb2 15.ed5 Bd5 16.c4 Bf3 17.Nf3=+) 15.e5 Be7 (better 15...Nd3!? 16.cd3 de5 17.Ne5 Qd5=) 16.ed6+/- Qd6 (16...cd6!? 17.Bf5 Qc7+/-) 17.Be5+- (17.Bg7 Rg8 18.Ne4 Be4 19.Be4 Rg7 20.Qg7 Ng7 21.Ba8 Qa3-/+) 17...Ne2?? (better 17...Qb4 18.c3 Qa4 19.Bf4 Qf4 20.Re6 Qg3 21.Re7 Ke7 22.Re1 Kf8 23.hg3 Re8+-) 18.Re2 Qd5 (18...Qd7+-) 19.Be4 (19.Be4 Qb5 20.Bb7 Qe2 21.Ba8+-) 1-0. opperwezen (2445) - FischyVishy (2265), Rated Three-check game, lichess.org, 2017.

6.Bd4 Be7 =.

7.c4 Bb4 8.Nc3 (8.Bc3 0-0 9.c5 Re8 10.Be2 Ne4 11.Bb4 ab4 12.Nf3 Qf6 13.a3 Nc5–/+) 8...0-0 (8...Qe7 9.Qe2 Ne4 10.Rc1 dc4 11.Qe3 Nc3 12.Qe7 Ke7 13.Bc3 Rd8+=; 8...Ne4 9.Rc1 0-0 10.Bd3 Qg5 11.Be4 de4 12.Kf1 Re8 13.Qe2 Bf5–/+; 8...Bf5 9.Bd3 Ne4 10.Nge2 dc4 11.Bc4 0-0 12.0-0 Re8 13.Ne4 Be4=) 9.Bd3 dc4 10.Bc4 Ne4 11.Nge2 Qg5 12.g3 Nd6 13.Bd3 Nb5 –/+.

7.Bd3 A) 7...Bg4 A1) 8.f3 Be6 (8...Bd7 9.Ne2 Bd6 10.0-0 0-0 11.Re1 Re8 12.Ba3 Be6 13.Bd6 Qd6=; 8...Bc8 9.Ne2 Bd6 10.0-0 0-0 11.Re1 Re8 12.Ba3 Ba3 13.Na3 Qd6=) 9.Ne2 Bd6 10.0-0 0-0 11.Re1 Re8 12.Ba3 Ba3 13.Na3 Qe7=; A2) 8.Be2 Bf5 (8...Qe7 9.Ba3 Qe6 10.Bf8 Kf8 11.h3 Bh5 12.Qd3 Nbd7 13.Nd2 Be2=; 8...Qd7 9.Bg4 Ng4 10.Qe2 Kd8 11.Nf3 Bb4 12.Kd1 f6 13.c3 Re8=; 8...Bb4 9.c3 Be2 10.Qe2 Be7 11.Ba3 Ne4 12.Be7 Qe7 13.Nf3 0-0=) 9.Nf3 Bd6 10.0-0 0-0 11.Ba3 Re8 12.Bd6 Qd6 13.Nh4 Bd7+=; A3) 8.Ne2 Be7 (8...Bb4 9.c3 Bd6 10.0-0 0-0 11.Re1 Re8 12.Ba3 a4 13.Qd2 Qd7=; 8...Bd6 9.0-0 0-0 10.h3 Bh5 11.Re1 Re8 12.Ba3 a4 13.f3 Ba3=) 9.0-0 0-0 10.f3 Bd7 11.Re1 Re8 12.Ba3 c6 13.Be7 Qe7=; B) 7...Bb4 B1) 8.Nd2 0-0 (8...Bg4 9.Ne2 0-0 10.0-0 Re8 11.a3 Bd6 12.c4 Nbd7 13.h3 Be2=; 8...Qe7 9.Ne2 Ne4 10.Be4 de4 11.0-0 0-0 12.a3 Bd6 13.Nc3 f5=; 8...Bd6 9.Ngf3 Qe7 10.Ne5 Bg4 11.Qc1 0-0 12.0-0 Re8 13.Ng4 Ng4=) 9.Ne2 Re8 10.0-0 Ne4 11.Ne4 de4 12.Bc4 Nd7 13.c3 Bd6+=; B2) 8.Bc3 0-0 (8...Bg4 9.Ne2 0-0 10.f3 Be6 11.0-0 Re8 12.Qd2 Qd6 13.Re1 Nbd7=; 8...Ne4 9.Bb4 ab4 10.Nf3 0-0 11.0-0 Bg4 12.Re1 Re8 13.Re3 Nd7+=; 8...Bd6 9.Nf3 Qe7 10.Ne5 c5 11.bc6 Nc6 12.0-0 0-0 13.Re1 Qc7=) 9.Ne2 Bd6 10.0-0 c6 11.a4 cb5 12.ab5 a4 13.Bb2 Qc7+=; B3) 8.c3 Bd6 (8...Be7 9.Nf3 0-0 10.0-0 Re8 11.Re1 a4 12.Ba3 Ba3 13.Re8 Qe8=) 9.Nf3 Qe7 10.Be2 0-0 11.0-0 Re8 12.Re1 Bf5 13.Bd3 Ne4=.

7.Nf3 Bd6 8.Be2 (8.Qe2 Be6 (8...Be7 9.Ba3 Bf5 10.Be7 Qe7 11.Nbd2 Ne4 12.Ne4 Be4 13.Nd2 Nd7=; 8...Qe7 9.Qe7 Be7 10.Bd3 0-0 11.0-0 Re8 12.Re1 Bg4 13.Ne5 Be6=; 8...Kf8 9.Ne5 Bf5 10.c4 dc4 11.Qc4 Be6 12.Qc2 Nd5 13.Be2 Nb4=) 9.Ng5 Qd7 10.Ne6 fe6 11.Nd2 0-0 12.0-0-0 c6 13.b6 Ra6+=; 8.Bd3 Be6 (8...0-0 9.0-0 Re8 10.Nbd2 a4 11.Re1 Re1 12.Qe1 Nh5 13.c4 Nf4=; 8...Qe7 9.Be2 0-0 10.0-0 Re8 11.Re1 Bg4 12.Nbd2 Nbd7 13.h3 Be6=) 9.0-0 0-0 10.Re1 Re8 11.Ba3 Ba3 12.Na3 Qd6 13.Nb1 Nbd7=) 8...0-0 (8...Bf5 9.0-0 0-0 10.Ba3 Re8 11.Bd6 Qd6 12.Re1 Nbd7 13.Nbd2 Re7+=; 8...Bg4 9.0-0 0-0 10.Re1 Re8 11.Ba3 a4 12.Bd6 Qd6 13.Qd3 Nbd7+=; 8...a4 9.0-0 0-0 10.Ba3 Re8 11.Re1 Bf5 12.Nh4 Be6 13.Nf3 Ne4=) 9.0-0 Bf5 (9...Re8 10.Re1 Bf5 11.c4 dc4 12.Bc4 Nbd7 13.Ne5 Ne5–/+) 10.Nbd2 (10.Ba3 Re8 11.Bd6 Qd6 12.Re1 Nbd7 13.Nbd2 Re7+=) 10...Ne4 (10...Nh5 11.c4 Nf4 12.c5 Ne2 13.Qe2 Bf4=) 11.Ne5 (11.Ne4 Be4 12.c4 dc4= (12...Re8 13.c5 Bf4=) 13.Bc4 Nd7=) 11...Nd2 (11...Re8 12.Ne4 Be4 13.Bh5 Re7=) 12.Qd2 Nd7 (12...Qh4 13.Rfe1 Nd7=) 13.c4 (13.Bd3 Bd3=) 13...dc4 (13...Re8=) 14.Nc4 Bb4 (14...Nb6 15.Nd6 Qd6 16.Rac1=) 15.Qf4+/= Bg6 16.Rfd1 (16.Bf3 Bd3 17.Rfc1 Bc4 18.Rc4+=) 16...c6 (better is 16...Nb6!?=) 17.bc6+/- bc6 18.Bf3 Nb6 19.Rac1 (19.Ne5 Nd5 20.Qc1 Rc8+/-) 19...Be7 20.d5 (20.Bc6 Bg5 21.Qe5 Bc1 22.Rc1 Nc4 23.Rc4 Rb8+=) 20...Nd5 21.Bd5 (21.Qd4 Bf6 22.Qc5 Bb2 23.Nb2 Qf6 24.Qc6 Qc6 25.Rc6 Nb4=) 21...cd5= 22.Qe5 (22.Ne3 Be4 23.Qg4 Bf6 24.Bf6 Qf6 25.Nd5 Bd5 26.Rd5 g6=) 22...Bf6 (22...f6 23.Qd4+=) 23.Qd5= Bb2 24.Nb2 Qd5 25.Rd5 Rfd8 26.Rd8 Rd8 27.Nc4 Rc8 28.Re1 f6 29.Na5 Ra8 30.Nc6 Ra2 ½–½. Schorr,Leon – Rodriguez Gonzales,Jesus, Tel Aviv ol (Men) fin–C, 1964.

7.Nf3 Bf5 A) 8.Ne5 Bb4 (8...Nbd7 9.Bd3 Bb4 10.c3 Bd3 11.Nd3 Qe7 12.Qe2 Bd6 13.Ba3 Ba3+=; 8...Bd6 9.Bd3 Bd3 10.Qd3 0-0 11.0-0 Re8 12.Nd2 c6 13.Rfe1 Qc7=) 9.c3 Bd6 10.c4 Nbd7 11.c5 Be5 12.de5 Qe7 13.Qd4 Ng4+=; B) 8.Be2 Bd6 (8...Bb4 9.c3 Bd6 10.0-0 0-0 11.Ba3 Re8 12.Re1 a4 13.Bd6 Qd6=; 8...Be7 9.0-0 0-0 10.Re1 Re8 11.Bd3 Be4 12.c4 Bd3 13.Qd3 dc4=; 8...a4 9.0-0 Bd6 10.Re1 0-0 11.Bd3 Bd3 12.Qd3 Nbd7 13.Ba3 Ba3=) 9.0-0 0-0 10.Ba3 Re8 11.Bd6 Qd6 12.Re1 Nbd7 13.Nbd2 Re7+=; C) 8.Bd3 Bb4 (8...Bd3 9.Qd3 Bb4 10.Nc3 Qe7 11.Ne5 0-0 12.0-0 Nbd7 13.Rae1 Rfe8=) 9.Bc3 Ne4 10.Bb4 ab4 11.0-0 0-0 12.c3 bc3 13.Qc2 Re8=.

7.Nf3 Bg4 A) 8.Be2 Bd6 (8...Bb4 9.c3 Bd6 10.0-0 0-0 11.Re1 Re8 12.Ba3 Ne4 13.Bd6 Qd6=; 8...Be7 9.0-0 0-0 10.Re1 Re8 11.Qd3 Nbd7 12.Nbd2 Bd6 13.Ba3 Ba3=; 8...Nbd7 9.0-0 Be7 10.Re1 0-0 11.Ba3 Re8 12.h3 Ba3 13.Na3 Qe7+=) 9.0-0 0-0 10.Re1 Re8 11.Ba3 a4 12.Bd6 Qd6 13.Qd3 Nbd7+=; B) 8.Qd3 Bb4 (8...Bd6 9.Qe3 Be6 10.Bd3 0-0 11.0-0 Re8 12.Re1 a4 13.Ba3 Bf5=; 8...Nbd7 9.Be2 Bb4 10.c3 Be7 11.0-0 0-0 12.Ba3 Re8 13.Re1 Ne4=; 8...Bh5 9.Qe3 Be7 10.Bd3 0-0 11.0-0 Re8 12.Ne5 Bd6 13.Nd2 c6=) 9.c3 Bd6 10.Qe3 Be6 11.Bd3 0-0 12.Ba3 Ba3 13.Na3 Re8=; C) 8.Nbd2 Nbd7 (8...a4 9.Qe2 Be7 10.Ba3 Bf3 11.Be7 Qe7 12.Qe7 Ke7 13.Nf3 Re8=; 8...Qe7 9.Qe2 a4 10.c4 a3 11.Bc1 Qe2 12.Be2 Bb4 13.Rb1 Ra4=; 8...Be7 9.Bd3 0-0 10.h3 Bh5 11.0-0 Re8 12.Re1 a4 13.a3 Bd6=) 9.Qe2 Qe7 10.c4 dc4 11.Qe7 Be7 12.Bc4 Nb6 13.Bd3 Nbd5=.

8.Nc3 Bb4 9.Bd3 Be6 10.cd5 Nd5 11.Nge2 Nc3 12.Bc3 Bc3 13.Nc3 Qd4 +=.

8.Nd2 Bb4 9.a3 Qe7 10.Be2 Bd2 11.Qd2 dc4 12.Qg5 Bb7 13.Rc1 h6=.

8.Nf3 Bb4 9.Bc3 0-0 10.Be2 dc4 11.Bc4 Bb7 12.0-0 Bd5 13.Bd5 Qd5 =.

8.Nf3 Bb4 9.Nbd2 =.

8.Nf3 Nbd7 9.Bd3 Bb4 10.Nbd2 Qe7 11.Qe2 0-0 12.Qe7 Be7 13.0-0 ½–½. Rosner,Dirk – Handschock, corr 11.PV59, 1989.

8.Nf3 Nbd7 9.Bd3 Bb4 10.Nbd2 Qe7 11.Qe2 Bb7 12.0-0 Qe2 13.Be2 0-0-0 =.

8.Nf3 Nbd7 9.Qe2 Qe7 10.Nc3 Bb7 11.Qe7 Be7 12.Ne5 Bb4 13.a3 Bc3 =.

8.Nf3 Be6 9.Nbd2 Bb4 10.a3 Bd2 11.Nd2 0-0 12.Be2 dc4 13.Nc4 Bc4 =.

6.c4 0-0 7.Nc3 c5 (7...c6 8.Nf3=) 8.e4 (8.Nf3 Bf5=) 8...Re8 9.Nf3 Nbd7 10.d3 Nf8 11.h3 Ne6 12.a4 b6 13.g3 (13.0-0 Nd4=) 13...h6 14.Qd2 Nh7 (14...Ra7 15.Nd5=) 15.h4 (15.Nd5 Nd4 16.Nd4 ed4=) 15...Nf6 16.Nd5 Nd5 17.ed5 (17.cd5 Nd4 18.Nd4 ed4=) 17...Nd4=+ 18.Nd4 ed4 19.Kd1 Bf6 20.Kc2 Ra7 21.Rae1 Re5 (21...Rae7 22.Kb1=+) 22.Bf1 (22.Bf3 Rae7=) 22...Rae7 23.Re5 Re5 24.f4 (24.Bg2 Bf5=+) 24...Re3–/+ 25.Qf2 Bf5 (25...Bg4!?–/+) 26.Rh2 ½–½. Callens,Alex – Roose,Jacques, Belgian correspondence championship, 1967.

6.d3 0-0 7.Nf3 Nbd7 8.a4 Nc5 9.0-0 Nd5 10.c4 Nb4 11.d4 ed4 12.ed4 Ne4 13.Nbd2 Nd2 14.Qd2 c5 (14...Bf5 15.Bc3=) 15.Rad1 Bf5? (better is 15...Qc7+=) 16.dc5+– dc5? (16...Bc2 17.cd6 Bd1 18.Rd1 Bf6+–) 17.Qc3 Bf6 18.Rd8 Bc3 19.Rf8 Kf8 20.Bc3 Re8 21.Be5 f6 22.Bd6 Kf7 23.Bd1 Bd3 24.Re1 Bc4 25.Bc5 Rd8 (25...Nd3 26.Re8 Ke8 27.Ba3+–) 26.Bb6 (26.Bb6 Rd5 27.Ba5+–) 1–0. Badkarma – Doro, playchess.de, 2001.

6.d4 e4 7.d5 =.

6.f4 ef4=+ 7.ef4 0-0 8.Nf3 Be6 (8...Nd5 9.g3–/+) 9.0-0 Ne4 (9...d5 10.Re1=) 10.d3 Bf6 11.Nd4 (worse 11.de4 Bb2 12.Nbd2 Ba1 13.Qa1 Re8–/+) 11...Nc5 12.Nd2 Na4 13.Ne6 Nb2 (13...fe6 14.Bf6 Qf6 15.Ne4 Qd4 16.Kh1=) 14.Nd8 Nd1 15.Rad1 Bd4 (15...Rd8 16.Bf3 c6 17.c4=) 16.Kh1 Rd8 17.Nb3 (17.Bf3 c6+=) 17...Bc3= 18.Bf3 (18.d4 a4 19.Nc1 d5=) 18...c6 19.a4 (19.Nd2 cb5 20.Ne4 Bb4=+) 19...Ra7 (19...cb5 20.ab5 a4 21.Nc1=+) 20.Nd2 (better 20.bc6!? Nc6 21.Nd2=) 20...cb5–/+ 21.ab5 d5 (21...a4 22.Ne4 Bb2 23.Rfe1–/+) 22.Nb1=+ Bf6 (22...Bb4!?=+) 23.c4 dc4 24.dc4 b6 ½–½. Vandiest,Julien – Dubuisson,Raymond, Belgian championship, 1957.

6.Nc3 A) 6...Be7 A1) 7.Be2 h6 (7...0-0 8.0-0 h6 9.d3 a4 10.a3 d5 11.Ra2 Bd6 12.Re1 Qe7; 7...d5 8.0-0 0-0 9.h4 Bd6 10.a4 Qe7 11.Qb1 Nb6 12.Qa2 Be6; 7...Nc5 8.0-0 0-0 9.d4 ed4 10.ed4 Nce4 11.Bd3 d5 12.Ne5 Nc3) 8.0-0 0-0 9.d3 a4 10.Qc1 d5 11.Ba3 Re8 12.Qb2 Nb6; A2) 7.a4 d5 (7...0-0 8.Be2 Nb6 9.0-0 h6 10.d3 Be6 11.e4 c6 12.h3 Qd7; 7...h6 8.Be2 0-0 9.0-0 d5 10.Qb1 Bd6 11.Ba3 Ba3 12.Ra3 Qe7) 8.Be2 0-0 9.0-0 Bd6 10.Ba3 Qe7 11.Bb2 h6 12.Re1 Nb6; A3) 7.a3 h6 (7...0-0 8.Bc4 e4 9.Nd4 Nc5 10.0-0 d5 11.Be2 Qd6 12.f4 Bd7; 7...d5 8.Be2 0-0 9.0-0 h6 10.Qb1 Bd6 11.Qa2 Nb6 12.Rad1 Be6) 8.Be2 0-0 9.0-0 d5 10.h3 Bd6 11.d3 Nb6 12.Qd2 Qe7; A4) 7.Bc4 0-0 (7...Nb6 8.Bd3 0-0 9.Qe2 h6 10.0-0 Be6 11.e4 a4 12.Ba3 Qd7; 7...h6 8.0-0 Nb6 9.Bd3 0-0 10.Qe2 Be6 11.a4 Nbd7 12.e4 Nc5; 7...e4 8.Nd4 Ne5 9.Be2 0-0 10.0-0 d5 11.f4 ef3 12.Nf3 Qd6) 8.0-0 h6 9.h3 Nb6 10.Bd3 a4 11.a3 Be6 12.Qe2 Nfd7; B) 6...e4 7.Nd4 Ne5 (7...Be7 8.d3 d5 9.de4 de4 10.Nf5 0-0 11.Be2 Nc5 12.Qd8 Bd8; 7...d5 8.f4 Nc5 9.Be2 Bd6 10.0-0 0-0 11.Qe1 Bd7 12.Qg3 h6; 7...Nc5 8.Be2 d5 9.0-0 Bd6 10.f3 0-0 11.Qe1 Qe7 12.a4 Bd7) 8.Be2 Be7 9.f4 ef3 10.Nf3 0-0 11.0-0 Be6 12.Ne5 de5; C) 6...d5 C1) 7.h3 h6 (7...Bd6 8.Be2 0-0 9.0-0 h6 10.a3 Nb6 11.d3 Qe7 12.Qd2 Bd7; 7...a4 8.a3 Bd6 9.Be2 0-0 10.0-0 h6 11.d3 Re8 12.Re1 b6) 8.a4 Bd6 9.Be2 0-0 10.0-0 Qe7 11.Re1 Nb6 12.d3 Bf5; C2) 7.Rc1 a4 (7...Bd6 8.Be2 0-0 9.0-0 a4 10.Rb1 h6 11.h3 Qe7 12.d3 a3) 8.Be2 Bd6 9.0-0 0-0 10.a3 Qe7 11.Ra1 Nb6 12.d3 Bd7; C3) 7.g3 e4 8.Nd4 Ne5 9.f4 ef3 10.Nf3 Bd6 11.Be2 Qe7 12.Ne5 Be5; C4) 7.Be2 Be7 (7...Bd6 8.h3 0-0 9.0-0 h6 10.d3 Nb6 11.Qd2 Qe7 12.a3 Bd7; 7...Bb4 8.0-0 0-0 9.d3 a4 10.a3 Bd6 11.g3 h6 12.Re1 Qe7; 7...h6 8.0-0 Bd6 9.d3 0-0 10.e4 d4 11.Na4 Qe7 12.c3 dc3) 8.h3 0-0 9.0-0 Bd6 10.a4 Qe7 11.d3 Nb6 12.Re1 h6.

6.c4 c6 7.Nc3 Be7 8.d3 0-0 9.a4 d5 10.Be2 e4 11.de4 de4 12.Nd4 Bb4 (12...Ne5 13.0-0=) 13.0-0 (13.bc6 Ne5 14.cb7 Bb7+/-) 13...Ne5 (13...Qb6 14.Qc2 Nc5 15.Rad1=) 14.bc6 bc6 15.h3 (15.Qc2 Bc3 16.Qc3 Qc7+=) 15...Bb7 (15...c5 16.Ndb5 Nd3 17.Qc2=) 16.Nc2 (16.Na2 Qc7=) 16...Ng6 (16...Nd3 A) 17.Nb4 ab4 (17...Nb2?! 18.Qb3 Qb6 19.Qb2 ab4 20.a5 Ra5 21.Na4=+) 18.Qb3 bc3-/+; B) 17.Bd3 ed3 18.Nb4 ab4 19.Na2=) 17.Nb4 ab4 18.Qd8 Rad8 (18...Rfd8!? 19.Nb1 c5=+) 19.Nb1= Rc8 (19...Ba6!?=) 20.Nd2 c5 21.Nb3 Nd7 22.a5 Ba6 23.Rfd1 Nb8 (23...Rc7 24.Rd5 Ne7 25.Rg5+/-) 24.Rd6 (24.Rd5 Rfd8 25.Rad1 Rd5 26.Rd5 f6+-) 24...Nc6 (better 24...Rfd8!? 25.Rd8 Rd8+/-) 25.Nc5+- Nge7?? (25...Bc4 26.Bc4 Nce5+-) 26.Na6 Ra8 27.Nc5 White prepares a6 (better 27.c5 Ra7+-) 27...Rad8 (27...Na5 28.Ne4 Nac6 29.Rdd1+-) 28.Rd8 Rd8 29.Kh2 (better 29.Ne4 f5 30.Ng3 Rd2+-) 29...Rf8 (29...Rd2 30.a6 Rb2+-) 30.a6 Ne5 (30...Rd8 31.Ne4 f5+-) 31.Be5 Nf5 (31...Nc6 32.Bd4 f5 33.f3+-) 32.Nd7 Nh4 33.Nf6! (33.Nf6 gf6 34.Bf6+-) 1-0. opperwezen (2425) - FischyVishy (2285), Rated Three-check game, lichess.org, 2017.

6.Be2 Nc5 A) 7.a4 Be7 (7...g6 8.Nc3 Bg7 9.d4 ed4 10.Nd4 0-0 11.0-0 d5 12.Ba3 Qd6; 7...Bd7 8.Nc3 e4 9.Nd4 d5 10.Qb1 Bd6 11.Qa2 c6 12.0-0 0-0; 7...e4 8.Nd4 d5 9.Nc3 Bd6 10.0-0 0-0 11.f3 Bd7 12.Qe1 Qe7) 8.Nc3 0-0 9.0-0 h6 10.h3 e4 11.Nd4 d5 12.f3 Bd6; B) 7.0-0 Be7 8.Nc3 0-0 9.d4 ed4 10.ed4 Nce4 11.Bd3 d5 12.Ne5 Nc3; C) 7.Ba3 e4 (7...Be7 8.Bc5 dc5 9.Ne5 Qd5 10.Nf3 0-0 11.Nc3 Qd6 12.Bd3 Be6; 7...Ne6 8.Nc3 Be7 9.0-0 0-0 10.Bc4 e4 11.Nd4 Nd4 12.ed4 Re8) 8.Nd4 d5 9.Nc3 Bd6 10.0-0 0-0 11.Qe1 Bd7 12.f4 Nd3; D) 7.Nc3 Be7 8.d4 ed4 9.Qd4 Bf5 10.Bd3 Nd3 11.cd3 c5 12.bc6 bc6.

6.Be2 e4 7.Nd4 Be7 (7...d5 8.Nc3 Bc5 9.0-0 0-0 10.f4 ef3 11.Nf3 Nb6 12.Qe1 Re8; 7...Nc5 8.0-0 d5 9.f3 Bd6 10.fe4 Nce4 11.d3 Nc5 12.Nc3 0-0; 7...h6 8.Nc3 Be7 9.0-0 0-0 10.d3 Nc5 11.de4 Nfe4 12.Ne4 Ne4) 8.Nc3 0-0 9.0-0 Ne5 10.a4 d5 11.d3 Bd7 12.de4 de4.

6.Be2 g6 7.0-0 Bg7 (7...Bh6 8.Nc3 0-0 9.h4 Nc5 10.d4 ed4 11.Nd4 Qe7 12.h5 Bd7; 7...Qe7 8.Nc3 Bg7 9.d4 0-0 10.e4 ed4 11.Qd4 Re8 12.Nd2 c6) 8.c4 (8.Nc3 0-0 9.d4 ed4 10.ed4 Nb6 11.Re1 Re8 12.Bd3 a4) 8...0-0 9.Nc3 c6 (9...Nc5 10.d4 ed4 11.Nd4 Bd7 12.Bf3 Re8) 10.Rb1 (10.d4 Qc7 11.h3 ed4 12.Nd4 Nc5) 10...Re8 (10...Nc5 11.d4 ed4 12.Nd4 Bd7) 11.bc6 bc6 12.Ng5 (12.d4 Qc7) 12...h6 (12...e4 13.Qc2 Nc5 14.f3=; 12...Rb8=) 13.Nge4 Ne4 14.Ne4 Qc7 15.Bf3 (15.Ba3 c5+=) 15...Ba6 (15...f5 16.Ng3+=) 16.d3 d5 17.cd5 cd5 18.Ng3 (18.Nc3 d4 19.Nd5 Qd6+=) 18...Nf6 (18...Nc5 19.Be2+=) 19.Re1 (19.Qd2 Rab8=) 19...Rad8 20.Rc1 Qb6 21.Ba1 e4 (21...Rb8 22.Bc3+=) 22.Be2 Qd6 (22...ed3 23.Bd3 d4 24.Rb1+= (worse is 24.Bd4 Rd4 25.ed4 Re1 26.Qe1 Bd3–/+)) 23.Bd4 Rc8 (23...ed3 24.Bd3 Ne4 25.Bg7 Kg7 26.Ba6 Qa6= 27.Ne2=) 24.Rc8+/= Rc8 25.Bf6 Bf6 26.de4 Bc3 27.Rf1 Be2 28.Ne2+/- g5 29.f4 Bg7 30.ed5 Qc5 31.Qd3 Qc2 32.Qc2 Rc2+/- 33.Ng3 Ra2 34.Rd1 Kf8 35.e4?? f6?? 36.Rb1 Rd2? 37.Rb5 a4 38.Ra5 Rd4? 39.Kf2 Ke8 40.Ke3 Rb4 41.Ra8 Kf7 42.Ra7 Kg8 43.d6 Rb3 44.Kd4 f5 45.e5 Bf8 46.Ra4 Rb1 47.Kd5 Rd1 48.Rd4 Re1 49.Nf5+– 1–0. Suutarla,Ari – Hansroul,Jacques, IBCA–ol blind, 1976.

6.Be2 g6 7.Nc3 Bg7 8.h4 0-0 9.d4 a4 10.Qc1 ed4 11.ed4 Nb6 12.0-0 Re8.

6.Be2 g6 7.d4 ed4 8.Bd4 Bg7 9.Nbd2 0-0 10.0-0 c5 11.bc6 bc6 12.Rb1 c5 13.Ba1 Qc7 14.c4 Bb7 15.Qc2 Rab8 16.Rfd1 Rfe8 17.Ng5 Ne5 18.h3 Qe7 19.Ngf3 Nf3 20.Nf3 Be4 21.Bd3 Bf3 22.gf3 Nh5 23.Bg7 Ng7 24.Rb5 Qg5 25.Kh2 Qh4 26.f4 a4 27.Rdb1 Rbd8 28.Kg2 Ne6 29.Be2 f5 30.Rb7 a3 31.Qc3 Rc8 32.Bf3+– Rc7 33.Bd5 Rf7 34.Be6 Re6 35.Rb8 Rf8 36.Rf8 Kf8 37.Qh8 Kf7 38.Rb8 Qe7 39.Qg8 Kf6 40.Rf8 Qf8 41.Qf8# 1–0. Fournier,Frederic (2390) – Diogenes (1960), echecsemail.com (team), 2008.

6.Be2 g6 7.h3 Qe7 (7...Bg7 8.Nc3 0-0 9.0-0 Qe7 10.Ng5 Nb6 11.d3 a4 12.a3 Bd7; 7...Bh6 8.0-0 0-0 9.Nc3 Nb6 10.e4 Be6 11.Bc1 d5 12.ed5 Nfd5; 7...Nc5 8.Nc3 Bg7 9.d4 ed4 10.Nd4 0-0 11.0-0 a4 12.Ba3 Nfe4) 8.0-0 Bg7 9.Nc3 0-0 10.a4 Nb6 11.d3 Bd7 12.Qd2 Nbd5.

7.0-0 0-0 8.a3 c5 (8...Nb6 9.Nc3=) 9.d3 b6 (9...Nb6 10.c4=) 10.c4 Bb7 11.Nc3 Qc7 12.e4 Ne8 13.Nd5 Bd5 14.ed5 f5 15.Re1 Bf6 16.Nd2 e4 17.Bf6 Nef6 18.de4 fe4 19.Qc2 Rae8+= 20.Bf1 Re5 21.Ne4 Ne4 22.Re4 Ref5 23.Rae1 Ne5 24.f3 Qf7 25.Bd3 Nd3 26.Qd3+– Rf6 27.Re7 Qg6 28.Qg6 Rg6 29.R1e6 Rg5 30.Rd6 Rf3 31.Rb6 h5 32.Rc6 Ra3 33.g3 h4 34.Rc5 hg3 35.Rc8 Kh7 36.hg3 Rag3? 37.Kf2 Rg2 38.Ke3 a4 39.Ra8 a3 40.b6 a2 41.b7 R2g3 42.Kd4 R5g4 43.Kc5 Rb3 44.Ra2 Rg6 45.Rh2 Rh6 46.Rh6 Kh6 47.Re6 Kg5 48.Rb6 1–0. kamret (2090) – lomin (1765), GameColony.com, 2002.

7.0-0 0-0 8.Nc3 d5 9.d3 a4 10.h4 Bd6 11.a3 h6 12.Re1 Re8.

7.0-0 Nc5 8.Nc3 0-0 9.Re1 e4 10.Nd4 d5 11.f4 h6 12.Rf1 Qd6.

7.0-0 h6 8.c4 Nb6 9.d4 ed4 10.Nd4 0-0 11.Qc2 a4 12.a3 Bg4.

7.Nc3 h6 8.0-0 0-0 9.h3 Nb6 10.Bd3 Be6 11.Qe2 Nbd7 12.Bc4 e4.

7.h3 Nc5 8.Nc3 0-0 9.0-0 e4 10.Nd4 d5 11.f3 Qd6 12.Ba3 Bh3.

6.a4 0-0 7.c3 Nbd7 8.d4 e4 9.Nfd2 d5 10.c4 c6 11.Nc3 Re8 12.Be2 cb5 13.ab5 dc4 14.Bc4 Bb4 15.0-0 Bc3 16.Bc3 b6? (better is 16...Nf8+=) 17.Qb3+– Qe7 18.Bb2?? (18.Bb4 Qd8+–) 18...Bb7? (better is 18...Nb8+=) 19.Ba3+– Qd8 20.Bf7 Kh8 21.Be8 Qe8 22.Rfc1 Bd5 23.Qd1 h6 24.Nc4 Qg6 25.Ne5 Qg5 26.Be7 (better is 26.Bd6!? Be6+–) 26...Ne5 27.Bf6 gf6 28.de5 Qe5 29.Rc2?? (better is 29.Qg4+–) 29...Bb3+= 30.Qc1?? Bc2–+ 0–1. elsh1403 – abelha2010 (1755), kurnik, 2011.

6.a4 0-0 7.c4 c6 8.Be2 Bg4 (8...e4 9.Nd4+=) 9.0-0= e4 10.Nd4 Be2 11.Ne2 (11.Qe2 d5=) 11...cb5 12.cb5 Nbd7 13.d4 ed3 (13...d5!?+=) 14.Qd3+= Ne5 15.Be5 (15.Qd4 Rc8+=) 15...de5= 16.Nbc3?? (better is 16.Qf5=) 16…Qd3–+ 0–1. horacyad2010 – gentle88, kurnik, 2013.

6.a4 0-0 7.d4 e4 8.Nfd2 d5 9.c4 c6 10.Nc3 Bb4 11.Be2 Bf5 12.0-0 Qd6 13.Qb3 Re8 14.Ba3 Ba3 15.Qa3 Qa3 16.Ra3 Nbd7 17.bc6 bc6 18.cd5 Nd5 19.Nc4 Nb4? (better is 19...Reb8!? 20.Nd6 Bg6+/-) 20.Nd6+– Be6 (20...Bg6 21.Ne8 Re8 22.Na2+–) 21.Ne8 Re8 22.Ne4 1–0. polynesia46 (1635) – wetal72, kurnik, 2013.

6.Bc4 0-0 7.0-0 Bg4 8.h3 Bh5 9.g4 Bg6 10.a4 Nfd7 11.d3 (11.Nc3!?=) 11...Nb6+= 12.Bb3 Kh8 (12...N8d7 13.Ba3+=) 13.e4 N8d7 14.c4 (14.d4!?+=) 14...Nc5–/+ 15.Bc2 h5 16.Nh2 hg4 17.hg4 Ne6 18.Bc1 Nd4 19.Be3 Nc2 (19...Qc8!?–/+) 20.Qc2+= c5 (20...Nd7!?+=) 21.Nc3 Kh7 22.f4 (22.Kg2!?+=) 22...ef4= 23.Bf4 Bf6 24.Nf3 Rh8 (24...Qd7 25.Qh2 Kg8 26.Rac1 Qg4 27.Qg3 Qg3 28.Bg3+=) 25.g5 Be7 26.Nd5 Nd5 27.cd5 Qd7 28.Qg2 Kg8 29.Kf2 Qh3 (29...Rf8!? 30.Rh1 Bh5+=) 30.Qh3+/- Rh3 31.Rh1 Rh1 32.Rh1 c4 33.Rc1 cd3 34.Ke3 f5? 35.e5?? d2 36.Kd2 de5 37.Ne5+/- Bb4 38.Kd3 Be8 39.Rc7+– b6?? 40.Nc6 Bf7 41.d6 Bd6 42.Bd6 Bb3 43.Be5 Ba4 44.Rg7 Kf8 45.Kc4 Re8 46.Rh7 Re6 47.Rh8 Kf7 1–0. Fabus,Marian (1815) – Sustek,Vladimir (2075), SVK–chT2C, 2005.

6.d4 0-0 7.Be2 (7.de5 de5 8.Qd8 Rd8 9.Ne5 Bb4 10.Bc3 Rd5+–) 7...Nbd7 (7...e4 8.Nfd2=) 8.c4 (8.de5 de5 9.Ne5 Bb4 10.c3 Bc5+–) 8...a4 (8...ed4 9.Bd4 Nc5 10.0-0=) 9.a3 (9.de5 de5 10.Ne5 Bb4 11.Kf1 Bd6 12.Nd7 Nd7+=) 9...c5 (9...ed4!? 10.Bd4 Ne4=) 10.de5+– Ne5 (10...de5 11.Ne5 (11.Be5?! Ne5 12.Ne5 Qa5 13.Qd2 Qc7=) 11...Qc7 12.Nd7 Bd7 13.Bd3+–) 11.Ne5 de5 12.Qd8 Rd8 (12...Bd8 13.Be5 Re8 14.Bb2+–) 13.Be5 Ne4 14.Nc3 (better 14.Bf3 Bf5 15.g4+–) 14...Nd2?? (better 14...Nc3 15.Bc3 Be6+–) 15.Rd1 Nf3 (15...Nb3 16.Nd5 Kf8+–) 16.Bf3 Rd1 17.Bd1 (17.Kd1 Bf8+–) 17...Bf5 (17...Be6 18.Bf3 f6 19.Bg3+–) 18.Nd5 (18.Bf3!? Bc8+–) 18...Bf8 (18...Bh4 19.Rg1+–) 19.Be2 (19.Bc7 Rc8+–) 19...Rd8 (19...Be4 20.0-0+–) 20.0-0 (20.Bf3 Bd3 21.Nb6 Bc2+–) 20...f6 21.Rd1 (21.Bc7 Rd7+–) 21...Kh8 (21...fe5 22.Nf6!! Kf7 23.Rd8 gf6+–) 22.Bc3 Be6 (22...h6 23.Rd2+–) 23.Rd2 (23.Nb6 Rb8+–) 23...Bd6 (23...Bd5 24.Bd1+–) 24.g3 (24.Nf4 Bf5+–) 24...Be5 25.Nb6 Rf8 (25...Rd2 26.Bd2 Bb2 27.Na4 Ba3 28.e4+–) 26.Na4 (better 26.Be5 fe5 27.Na4 Rc8+–) 26...Bh3 (26...Bc3 27.Nc3 Ra8 28.Ne4+–) 27.Be5 fe5 28.Nc5 Ra8 (28...Bc8 29.Bf3 b6 30.Na4+–) 29.Nb7 g6 (29...Kg8 30.Rd8 Rd8 31.Nd8+–) 30.Rd8 Rd8 31.Nd8 1–0. FeegLood (2325) – FischyVishy (2165), lichess.org, 2017.

6.d4 e4 7.Nfd2 d5 8.c4 c6 9.bc6 bc6 10.cd5 cd5 (worse is 10...Qd5 11.Nc3 Qf5 12.Qc2+/-) 11.Bb5 Nbd7 12.0-0 0-0 13.Nc3 Ba6 14.a4 Bb4 15.Qe2 Qb6 16.Ba6 Qa6 17.Nb5 Rfc8 18.Rfc1 Rc1 19.Rc1 Rc8 (19...Nb6 20.Qd1 Na4 21.Qa4 Bd2 22.Nc7–/+) 20.Qd1 Nb6 21.Bc3 h5 22.h3 Nfd7 23.Bb4 (23.Qh5? Na4 24.Qd5 Nf6–+) 23...Rc1 24.Qc1 ab4 25.Qc7 Qa4 26.Qd8 Kh7 27.Nd6 Qd1 28.Nf1 b3 29.Qg5 Nf6 30.Nf7 (better is 30.g4=) 30...Nbd7–+ 31.Qf5 Kg8?? (better is 31...g6 32.Ng5 Kh6 33.Nf7 Kg7–/+) 32.Qg6= Kf8 33.Ne5 Ke7 34.Qg7 Ke6 35.Nd7 Nd7 36.Qg8 Kd6 37.Qa8 Qc1–/+ 38.Qa6 Ke7 39.Kh2 h4 40.Qe2?? b2–+ 41.Nd2 Qd2! 42.Qd2 b1Q 43.Qa5 Ke6 44.Qa6 Qb6 45.Qe2 Nf6 46.Qc2 Qa6 47.Kg1 Qc4–/+ 48.Qb2 Qc6 49.Qb8 Qc1 50.Kh2 Qd1 51.Qe5 Kf7 52.Qf4 Qh5 53.Kg1 Kg6 54.Qd6 Qf5 55.Qb8 Kf7 56.Qc7 Nd7 57.Qd8= Nf6 58.Qc7 Kg6 59.Qb8 Qh5 60.Qd6 Qg5 61.Qc7 Ng8 62.Qc6 Kf7 63.Qd7 Ne7 64.Qc7 Qf6 65.Qb8 Qe6 66.Qc7 Kg6 67.Qa7 Nf5 68.Qa8 Qd7 69.Qg8 Kf6 70.Qf8 Ke6 71.Qg8 Kd6 72.Qb8 Kc6 73.Qa8 Kb5 74.Qb8 Kc4 75.Qf8 Nd4 76.ed4+= Kd4 77.Qf6 Kd3 78.Qh4 d4 79.g4? Kc2–+ 80.g5 Qf5 81.f3?? d3 82.fe4 Qc5 83.Qf2 Qf2 84.Kf2 d2 85.Kf3 d1Q 86.Kf4 Kd3 87.h4 Kd4 88.e5 Qf1 89.Kg4 Ke5 90.Kh5 Kf5 91.Kh6 0–1. Lorenc,Tomas (2160) – Petran,Peter (2360), CZE–chT1W, 2007.

6.Be2 b6 7.0-0 Bb7 8.d4 ed4 (8...e4 9.Nfd2+=) 9.Nd4 0-0 10.Bf3 Bf3 11.Qf3 (11.gf3?! Re8=) 11...Nbd7 12.Nc6 Qe8 13.c4 (13.Nd2 Ne5 14.Be5 de5+=) 13...Nc5 (13...a4 14.Rd1+–) 14.Ne7+– Qe7 15.Bf6 Qf6 16.Qf6 gf6 17.Nc3 Rac8 18.Nd5 Kg7 19.f4 (19.Rad1 Rfe8+–) 19...Rfe8 (19...f5 20.Ne7 Rce8 21.Nf5 Kf6 22.g4+=) 20.Rf3 Nd3 (20...Ne4 21.f5+–) 21.Rg3+– (21.Rg3 Kh8 22.Rd1+–) 1–0. GuestQSVZ – GuestCPKR, freechess.org, 2018.

6.Be2 e4 7.Nd4 0-0 8.0-0 c5 9.Nb3 (better is 9.bc6!? Nc6 10.Na3=) 9...a4–/+ 10.Nc1 d5 11.d3 d4 (better is 11...Be6!?–/+) 12.ed4+= Bf5 13.de4 Be4 14.dc5 Qd1 15.Bd1 Nbd7 16.Nd2 a3 17.Bf6 (17.Ne4?? ab2 18.Nf6 Bf6–+ (18...gf6?! 19.Rb1 bc1R 20.Rc1–+; 18...Nf6?! 19.Rb1 bc1B 20.Rc1–+)) 17...Bf6 18.Rb1 Nc5 19.Ne4 (better is 19.Ncb3!? Bd5 20.c4 Nb3 21.Bb3+=) 19...Ne4= 20.Rb4 Nd2 21.Re1 Bc3 22.Rbe4? (better is 22.Rh4=) 22...Ne4–+ 23.Re4 Rad8 24.Nd3 Rd5 25.Rc4 Rb5 26.Rc3 Rb1 27.g3 Rd1 28.Kg2 Ra8 29.Rb3 Rd2 30.Rb7?? (30.Rc3–+) 30...Rc2 31.Nb4 (31.Rb1 Ra2 32.Rd1 Rc2–+) 31...Rb2 32.Rb6 h5 33.Nd5 Ra2 (33...Ra2 34.Rb1 Rb2–+) 0–1. Hal1958 – Tiit145, playchess.de, 2005.

7.0-0 c6 8.c4 cb5 9.cb5 Nbd7 10.Nc3 b6 11.d4 Bb7 12.de5 de5 13.Na4 e4 14.Ne5 Ne5 15.Qd8 (15.Be5 Nd7 16.Bd4 Rc8=) 15...Rfd8 (worse is 15...Bd8 16.Be5 Rc8 17.Rac1+=; 15...Rad8?! 16.Be5 Rd2 17.Bc4=) 16.Be5 Nd5 17.Bc4 Bd6 (17...Rac8 18.Bb3 Bc5 19.Rfd1+= (19.Nc5?! Rc5 20.Rac1 Rdc8 21.Rc5 Rc5=)) 18.Bd6 (18.Bd4 Bc7+/-) 18...Rd6+= 19.Bd5 Bd5 20.Rfd1 Rad8 21.Rd4 Bb7 (better is 21...Bc4! 22.Rad1 Bd3 23.Nb6 Rd4 24.ed4 Bb5=) 22.Rad1+/- Rd4 23.Rd4 Rd4 24.ed4 Bd5 25.Nb6 Ba2 26.d5 (better is 26.Na4+/-) 26...Kf8= 27.d6 Ke8 28.Kf1 Bb1 29.Ke1 (29.Ke2 Bd3 30.Ke3 Bb5 31.Ke4 Bc6 32.Kd4 Bg2–/+) 29...Bd3–/+ 30.Nd5 Kd7 31.b6 Ba6 32.Nc3 f5 33.Nb5 Kc6 34.Nc7 Kd6?? 35.Na6+= Kc6 36.b7 Kb7 37.Nc5 Kc6 38.Na4 Kb5 39.Nc3 Kb4 40.Kd2 a4 41.Nd5 Kb3 42.Ne3 a3 43.Nf5= a2 44.Nd4 Kb2 45.Nc2 a1Q?? 46.Na1+– Ka1 47.Ke3 Kb2 48.Ke4 Kc3 49.f4 Kd2 50.g4 Ke2 51.f5 Kf2 52.g5 Kg2 53.f6 gf6 54.gf6 Kh2 55.f7 h5 56.f8Q h4 57.Qg8 h3 58.Kf3 Kh1 59.Kf2 h2 60.Qg2 (60.Qd5) 1–0. aferypopsl (1640) – tarnopov, playok.com, 2012.

7.0-0 c6 8.c4 Be6 9.d3 Qc7 10.a3 a4 11.Nc3 cb5 12.Nb5 Qb6 13.Rb1 Qc5 14.d4 ed4 15.ed4 Qc8 16.Qc2 Nbd7 17.Rfc1 h6 18.h3 Nb6 19.Bd3 Qd7 20.c5 dc5 21.dc5 Nbd5 22.Ne5 Qc8 23.c6 bc6 24.Nc6 Bd6 25.Nbd4 Bh3 26.gh3 Qh3 27.Bf5 Qh2 28.Kf1 Nf4 29.f3 Qh1 30.Kf2 Qg2 31.Ke1 Rfe8 32.Kd1 Qf1 33.Kd2 Re2 34.Ne2 Qe2 35.Kc3 Be5 36.Kb4 N6d5 37.Kc5 1–0. ejdrzej – kjan61, kurnik, 2014.

7.0-0 Nbd7 8.d3 Re8 9.c4 Bf8 10.Nc3 g6 (10...Nb6 11.Na4=) 11.Rc1 Bg7 12.Re1 Nf8 13.d4 e4 14.Nd2 Bf5 (better is 14...N8d7!?+=) 15.g4+/- Bd7 16.g5 Nh5 17.Nde4 f5 18.gf6 Nf6 19.Bf3 (19...Ne4 20.Be4+/-) 1–0. pcmvr (2645) – fhupp (2230), net–chess.com, 2006.

7.0-0 Bf5 8.c4 c6 9.a4 Nbd7 10.d4 e4 11.Nfd2 d5 12.Nc3 Bg6 13.Qb3 Nb6 14.Ba3 Ba3 15.Qa3 Bh5 (15...cb5 16.Nb5 dc4 17.Rac1+=) 16.Bh5+= Nh5 17.bc6 bc6 18.c5 Nc8 19.Rab1 Qg5 20.Rb7 f5 21.f4 ef3 22.Rf3 Ne7 23.Qb3 Rae8 24.Ne2 (better 24.Qb6!?+=) 24...Ng6=+ Black intends f4. Attacks the backward pawn on e3 25.Nf1 (25.Rb6 Nh4 26.Rf2 Re3-/+) 25...f4-/+ 26.Rb6? (26.g3-/+) 26...fe3?? (better 26...Nh4 27.Rf2 f3-+) 27.Rf8=+ Rf8 28.Ne3 (28.Rb8 Nhf4 29.Rf8 Nf8 30.Nf4 Qf4 31.Qe3-/+) 28...Nh4?? (better 28...Ngf4 29.Nf4 Nf4-+) 29.Rb8= Qf6?? (better 29...Ng6=) 30.Rf8+- Qf8 31.Nd5! cd5 32.Qd5 Qf7 33.Qd8 Qf8 34.Qh4 Nf6 35.Qf4 (better 35.Nc3!? Qf7 36.Ne4 Qe8 37.Nf6 gf6+-) 35...Qe8 36.Qf3 Qa4 37.c6 (better 37.Qa8 Kf7 38.Qb7 Kf8 39.Kf2+-) 37...Qa1?? (better 37...Qc4 38.Kf1 Nd5+/-) 38.Kf2+- Qb1 (38...Ne8 39.Qd5 Kf8 40.Qc5 Kf7 41.c7 Nc7 42.Qc7 Kf8 43.Qc8 Kf7 44.Qd7 Kf6 45.d5+-) 39.c7 Ne4 40.Qe4!! Qe4 (40...Qe4 41.c8Q Decoy) 41.c8Q Kf7 42.Qc7 Kf8 43.Qf4 (better 43.Qa5 Qh4 44.Kg1 Qe7+-) 43...Qf4 44.Nf4 a4 45.Nd3 a3 46.Nb4 Ke7 47.Ke3 Kd6 48.Ke4 g6 49.Na2 h6 50.g4 (50.Nc3 Kd7+-) 50...g5 (50...Ke6 51.d5 Ke7 52.Kd4+-) 51.h3 Ke6 52.d5 (52.Nc3!? Kf6+-) 52...Kd6 53.Kd4 (53.Kd4 Kd7 54.Kc5+-) 1-0. Osmak,Iulija (2435) - Novikov,E (2275), Titled Tuesday 9th June, 2020.

7.d4 ed4 8.Qd4 c5 (8...Nbd7 9.0-0=) 9.bc6 (9.Qd3 d5=) 9...Nc6 10.Qa4 d5 (10...Be6 11.Nbd2=) 11.Nc3 Bd7 (11...Bf5 12.0-0=) 12.Qf4 (12.0-0 Nb4 13.Nb5 Rc8=) 12...Be6 (12...a4 13.Ne5=+ (13.Na4?? Nh5 14.Qd4 Nd4 15.Nd4 Ra4 16.Bh5 Qa5 17.Ke2 Rc8–+)) 13.0-0= Nh5 (13...a4 14.Nb5= (14.Na4?? Nh5 15.Qd4 Nd4 16.Nd4 Ra4 17.Bh5 Qc7–+)) 14.Qa4 Rc8 15.a3 Qd7 16.Rad1 The isolani on d5 becomes a target 16...Nf6 17.Nb5 (17.Rd2 Bc5=) 17...Ne4 18.Bd3 (18.Nd2 Nc5 19.Qf4 Bf5=) 18...f5 (18...Nc5 19.Qf4=) 19.Ne5+= Ne5 20.Be5 Bf6 (20...b6 21.Qd4 Bc5 22.Qa1=) 21.Qd4 (21.Bf6!? Rf6 22.Qa5+–) 21...Kh8 (21...Qe7 22.Bf6 Rf6 23.Qe5=) 22.f3 (22.Bf6 Rf6 23.Qa7 Qd8+=) 22...Ng5 (22...Nc5 23.Bf6 Rf6 24.Rb1+=) 23.Kh1 (better 23.Bf6 Rf6 24.Qa7+–) 23...Qf7? (better 23...Qe7+=) 24.Nd6+– Qh5 (24...Qd7 25.Bf6 Rf6 26.Nc8 Qc8+–) 25.Nc8 Qh2 (25...Be5 26.Qe5 Bc8 27.Qd5 Qe8+–) 26.Bh2 (better 26.Kh2 Be5 27.Qe5 Bc8 28.Qd5+–) 26...Bd4 27.ed4 Rf6 (27...Bc8 28.Rfe1 h6 29.Bd6+–) 28.f4 (better 28.Nd6 b6+–) 28...Ne4 29.Be4 (29.Nb6 Kg8+–) 29...fe4 (29...de4 30.Ne7 Rf7 31.d5 Re7 32.de6+–) 30.Nd6 (better 30.Ne7!? Bf7+–) 30...Bg4 31.f5 (31.f5 Bd1 32.Rd1+–) 1–0. FeegLood (2300) – Kleerkast (2035), lichess.org, 2017.

7.d4 e4 8.Nfd2=.

6.Be2 Qd7 7.a4 c6 8.Nc3 Be7 9.0-0 e4 10.Nd4 Be2 11.Qe2 cb5? (11...c5!? 12.Nb3 Qf5+=) 12.Qb5 (12.Ndb5?! Nc6+=) 12...Qb5 13.Ncb5 0-0? (13...Kd7!?+/-) 14.Nf5 Nc6 15.Nbd6 (15.f3!? ef3 16.Rf3 Ne8+–) 15...Bd6+/- 16.Nd6 Rfd8 17.Nb7 Rab8?? (better is 17...Rd2 18.Bf6 gf6+/-) 18.Nd8+– Rd8 19.Bf6 gf6 20.Rfd1 Nb4 21.c3 Nd3 22.Rab1 Rd5 23.Rb5 Rb5 24.ab5 Nc5 25.Ra1 Nb7 26.Kf1 Kf8 27.Ke2 Ke7 28.d4 Kd6 29.c4 f5 30.Kd2 h5 31.Kc3 f6 32.h4 Kc7 33.c5 Kd7 34.c6 (34.c6 Kc8 35.cb7 Kb7 36.d5 a4 37.d6 Kc8 38.b6 Kd7 39.b7 Ke6 40.b8Q f4 41.Qe8 Kd6 42.Rd1 Kc7 43.Qe7 Kb6 44.Kb4 fe3 45.Rd6) 1–0. Hal1958 – Evets, playchess.de, 2005.

6.Be2 Nbd7 7.d4 ed4 8.Nd4 Be2 9.Qe2 g6 10.0-0 Bg7 11.Nd2 0-0 12.c4 Re8 13.a4 Nc5 14.N2b3 Nb3 15.Nb3 Qd7 16.Rad1 Qe6 17.Nd4 Qd7 18.Qf3 Rab8 19.Rfe1 Ne4 20.Ba3 f5 21.Nb3 Qf7 22.Rc1 b6 23.Qd1 Rbd8 24.f3 Nf6 25.Nd4 d5 26.Nc6 Rd7 27.cd5 Nd5 28.Qb3 f4 29.e4 Ne3 30.Qf7 Kf7 31.g3 g5 32.h4 h6 33.hg5 hg5 34.gf4 gf4 35.Kf2 Bf6 36.Re2 Bh4 37.Kg1 Rg8 38.Kh1 Bg3 39.Ne5 Ke6 40.Nd7 Kd7 41.Rd2 Kc8 42.Bd6 Rh8 43.Kg1 Rh7 44.Be5 Kb7 45.Rd8 Bh2 46.Kf2 Bg3 47.Ke2 Rh2 48.Kd3 Rh7 49.Rg8 Rd7 50.Ke2 Ng2 51.Rg7 Rg7 52.Bg7 c5 53.bc6 Kc8 54.c7 Ne3 55.Be5 Ng2 56.Rc6 Ne3 57.Rh6 Nc4 58.Rh8 Kd7 59.c8Q Ke7 60.Qc6 Ne5 61.Rh7 Kf8 62.Qc8 1–0. elsh1403 (1650) – puskas (1870), kurnik, 2014.

6.Be2 Be7 7.0-0 Nbd7 8.c4 0-0 9.d4 e4 10.Nfd2 Be2 11.Qe2 Re8 12.Nc3 d5 13.Rfc1 Bb4= 14.Nd5 Nd5 15.cd5 Bd2 16.Qd2 Nf6 17.a4 Nd5 18.Ba3 Re6 19.Qa2 b6 20.Rc6 Rc6 21.bc6 Qg5 22.h4 Qh5–/+ 23.Qc4 Re8 24.Rb1 Nf6 25.Bd6? cd6–+ 26.c7 Qf5 27.Rb6= Ng4 28.Rb2 Rc8 29.Qa6+= Rf8 30.Qd6 g6? 31.Qc5+– Qe6 32.Qf8!! Kf8 33.Rb8 Kg7 34.c8Q Qd6 35.Qh8 (35...Kh6 36.Qf8 Qf8 37.Rf8+–; better is 35.Ra8!? Nf6+–) 1–0. Labahn,Wolfgang (2265) – Chlaifer,Roman, NRW–Liga I, 1994.

6.c4 Bg7 7.Qc2 0-0 8.Be2 Bf5 9.d3 e4 10.Nd4 ed3 11.Bd3 Bd3 12.Qd3 Ng4 13.Qe4 (13.Qe2 Qh4 14.h3 Nf6=) 13...Ne5 14.0-0 (worse is 14.Qb7 Nd3 15.Ke2 Nd7–/+) 14...Nc4 15.Qb7 Nd7 16.Nc6 Qg5 17.Bg7 Kg7 18.Qc7 Rfc8 19.Qd7 Qb5 20.Qg4 Rc6 21.Nc3 Qe5 22.Qe4 Rac8 23.Qe5 de5 24.Ne4 f5 25.Ng3 Nd2 26.Rfd1 Rc2 27.h4 Rb2 28.h5 Rcc2 29.Rdc1 Rc1 30.Rc1 Ra2 31.hg6 hg6–+ 32.Rc5 e4 33.Rc7–/+ Kf6 34.Rc6 Kg5 35.Ne2 Nf3 36.gf3 Re2 37.fe4 Ra2 38.e5 a4 39.f4 Kh6 40.Rc7 a3 41.e6 Re2 42.Ra7 a2 43.e7 Re3 44.Ra2 Re7 45.Kf2 Rb7 46.Ra3 Kh5 47.Rh3 Kg4–/+ 48.Rg3 Kf4 49.Rg6 Rb2 50.Ke1?? Kf3–+ 51.Rf6 f4 52.Rf8 Rb1 53.Kd2 Kg3 54.Rg8?? Kf2–+ 55.Rf8 f3 56.Rf7 Rb6 57.Kd3 Kg2 58.Rg7 Kf1 59.Rf7 f2 60.Kd2 Rb2 61.Kd1 Rb3 62.Kd2 Kg2 63.Rg7 Rg3 (63...Rg3 64.Rg3 Kg3 65.Ke3 Kg2 66.Kd4 f1Q 67.Ke5 Qe2 68.Kd6 Qd3 69.Ke7 Qe4 70.Kd7 Qd5 71.Kc7 Kf3 72.Kc8 Qc5 73.Kb7 Ke4 74.Kb8 Qe7 75.Kc8 Kd5 76.Kb8 Kc6 77.Kc8 Qc7) 0–1. Didicher,Dietmar (1610) – Ruell,Michael (1840), Hessen–ch Gr–D, 2008.

6.d4 Nbd7 7.Bc4 (7.de5 de5 8.Ne5 Bg7+/-) 7...ed4 8.Nd4 Bg7 9.0-0 0-0 10.Nd2 Nc5 11.a4 Be6 12.Qf3 d5 13.Ba2 (13.Bd3 Qd6=) 13...Nfe4 (13...Na4 14.Ba3 Re8 15.Bb3–/+) 14.Rfd1 (14.Ne6? fe6 15.Qg4 Bb2 (15...Nd2?! 16.Bg7 Nf1 17.Bf8 Nh2 18.Kh2 Qf8 19.Qd4–/+) 16.Ne4 Ne4 17.Qe6 Kg7–+) 14...Qd7 15.Bb3?? (better is 15.Ne4 Ne4 16.h3+=) 15...Bg4–+ 16.Qf4 Bd1 (better is 16...g5 17.Qg4 Qg4–+) 17.Rd1 Nb3 18.N2b3 c5 19.bc6 bc6 20.Ba3 Rfe8 21.c4 (21.Nc5 Qd6 22.Qd6 Nd6–+) 21...Be5 22.Qh4 c5 (better is 22...dc4 23.Nc5 Nc5 24.Bc5 Qd5–+) 23.Nb5 Nc3?? (better is 23...g5 24.Qh5 Qf5–+) 24.Nc3 Bc3 25.Nc5 Qd8 26.Qg4 Bb4 27.Rd5 Bc5?? 28.Bc5 Qb8 29.h4 Qb3= 30.h5 Qa4 31.Qd4 Qc6 32.h6 f6 33.Rd6 Rad8?? 34.Qf6 Qc7 35.Rd8 Rd8 36.Bd4 Rd4 37.Qd4 Qb7 38.c5 Qc6 39.Qd6 Qd6–+ 40.cd6 Kf7 41.e4 a4 42.Kf1 a3 43.Ke1 a2 44.Kd2 a1Q 45.Ke3 Qe5 46.f4 Qd6 47.e5 Qc5 48.Ke4 Ke6 49.f5 gf5 50.Kf4 Qd4 51.Kg5 Qe5 52.g4 Qg3 53.Kh5 Qg4 0–1. lllllll21 – peta1234 (1755), kurnik, 2013.

6.d4 e4 7.Nfd2 =.

7.c4 0-0 8.0-0 e4 9.Nd4 Nbd7 10.Nc3 Re8 11.f3 ef3 12.Nf3 Ne4 13.Nd4 Ndc5 14.Nd5 Be5 (14...a4 15.Rc1=) 15.d3+= Qh4?? (better 15...Ng5+=) 16.Nf3+– (16.de4?? Bh2 17.Kh1 Bg3 18.Kg1 Qh2) 16...Qh6 (16...Bh2 17.Nh2 Ng3 18.Rf4+–) 17.Ne5 Qe3 1–0. GuestSNNY – GuestKRWN, freechess.org, 2019.

8.c4 c5 9.a4 b6 10.d4 e4 11.Nfd2 Qe7 12.Nc3 h5? (12...Ra7 13.d5+=) 13.Qc2 (better is 13.Nce4!? Ne4 14.Ne4+–) 13...Bf5+= 14.Nd5 (better is 14.Nb3!?+=) 14...Nd5+= 15.cd5 Nd7 (better is 15...cd4!? 16.Bc4 Rc8+=) 16.dc5+= Nc5 17.Bg7 Kg7 18.Nc4 Rab8 19.Qc3 f6 20.Rae1 (20.Qc2 Rfc8+=) 20...Rfc8 (20...Na4!? 21.Qa3 Nc5+=) 21.Qa1 Nd3 22.Bd3 ed3 23.Rc1 (23.e4 Bg4 24.Rc1 Qe4+=) 23...h4 (23...Rc5 24.Rfd1=) 24.Qd4 h3 (24...Qe4 25.Nd6 Qd4 26.ed4 Rc2 27.Nf5 gf5 28.Rc2 dc2+/-) 25.Nb6 (25.f3 hg2 26.Kg2 Rh8+/-) 25...Rc1 (25...hg2 26.Rfd1 Rc2 27.Rc2 dc2 28.Rc1=) 26.Rc1+= hg2? (26...d2 27.Rf1 Rb6 28.Qb6 Qe4 29.Qa7 Kh6–+) 27.Nc4+– Rc8 28.Rd1 g5 29.Na5 Kg6? 30.Nc6 Qh7 31.f4 Qh5 32.Ne7?? Kf7–+ 33.Ra1 Ke7 34.Qa7 Kf8 35.Qb6?? Qe2 36.Qd6 Kg7 37.Qe7 Kg6 (37...Kg6 38.fg5 Kh5 39.gf6 d2 40.Qh7 Bh7 41.h4 Rc1 42.Rc1 dc1Q 43.Kh2 g1Q 44.Kh3 Qce3#) 0–1. elsh1403 – ambra777, kurnik, 2012.

8.c4 Nbd7 9.a4 e4 10.Nd4 Nc5 11.Nc3 h5 12.f3 ef3 13.Bf3 Nd3 14.Qc2 Nb2 15.Qb2 Ng4 16.h3 Ne5 17.Bd5 Nd3 18.Qc2 Nb4 19.Qe4 Nd5 20.Nd5 Bd7 21.Rf2 c6 22.bc6 bc6 23.Nc3 Re8 24.Qf4 Qe7 25.Raf1 Rf8 26.Ne4 Be5 27.Qf3 c5 28.Nb5 Bc6 29.d4?? Be4–+ 30.Qe4 Bh2!! 31.Kh2 Qe4 32.Nd6 Qe3 33.Nf7 Qd4 34.Nh6 Kg7 35.g4 Kh6 36.gh5 Rf2 37.Rf2 Qf2 38.Kh1 Re8 (38...Re8 39.hg6 Re1; 38...Rd8 39.hg6 Rd1) 0–1. elsh1403 – kingghidorah (1805), kurnik, 2011.

8.d3 Nbd7 9.c4 Re8 10.Nbd2 Nc5 11.a4 Bf5 12.Qc2 e4 13.de4 Nce4 14.Ne4 Ne4 (worse is 14...Re4 15.Bd3 Re7 16.Bf5 gf5 17.Rad1+/-; 14...Be4?! 15.Qd2=) 15.Qc1 Nc5 16.Bg7 Kg7 17.Qb2 Qf6 18.Qf6 Kf6 19.Nd4 Re4 20.Nf5 Kf5 21.Rfc1 h5 22.Bf3 Re5 23.Rc3 Rae8 24.h3 Kf6 25.h4 b6 26.g3 Ne4 27.Be4 Re4 28.Kg2 R8e5 29.Rd1 Rc5 30.Rd4 Ke5 31.Rd5 Rd5–/+ 32.cd5 Ra4 33.Rc7 Rb4 34.Rf7 Rb5 35.Rg7 a4 36.Rg6?? a3 37.Rg5 Ke4 38.g4 a2 39.gh5 a1Q 40.h6 Rd5 41.Rg4 Kd3 42.Rg5 Rg5 43.hg5 Qe5 (43...Qe5 44.h7 Qg5 45.Kf1 Qh4–+) 0–1. ejdrzej (1765) – chupachichi (1835), kurnik, 2012.

8.d4 Nbd7 9.c4 Qe7 10.de5 de5 (worse is 10...Ne5 11.Ne5 de5 12.Ba3+/-) 11.Qc2 e4 12.Nd4 Nc5 13.Bc3 Bg4 14.Nd2 Rfd8 15.a4 Be2 16.Ne2 Ng4 17.Bg7 Kg7 18.h3 Qd6 19.hg4 Qd2 20.Rfc1 Qd7 21.Rd1 (21.Qc3!? f6 22.g5+=) 21...Qg4–/+ 22.Rd8 Rd8 23.Nd4 b6 24.Qc3 f6 25.Qc2 h5 26.Rd1 h4 27.Kh2 Nd3 28.Qe2 Qe2 29.Ne2 Rd6 30.Kg1 (30.Rf1 f5–+) 30...f5 31.Rd2 Kf6 32.Nc3 Ke5 33.Nd5 (33.f4 ef3! 34.gf3 Nb4 35.f4 Ke6–+) 33...Nb4 34.Rd1 (34.Kh2 Nd5 35.cd5 Rd5–+) 34...Nd5 35.cd5 Rd5 36.Rc1 Rc5 37.Rd1 Ke6 38.Rd8 (38.Rd4–+) 38...Rc4 39.Rg8 Ra4 (39...Kf6!? 40.Kh2 Ra4 41.Kh3–+) 40.Rg6 Ke5 41.Rc6 (41.Rh6 Ra1 42.Kh2 Rb1 43.f4 ef3 44.gf3 Rb5 45.Rh4 Rb3–+) 41...Rb4 42.Rc7 Rb5 43.Ra7 Kd5 44.Kh2 (44.f3 ef3 45.gf3 Kc4–+) 44...Kc4 45.Kh3 Kb4 46.Kh4 a4 47.Kg5 a3 48.Kf4 Ra5 (48...Ra5 49.Rd7 a2–+) 0–1. Ehrlich,Hans Georg (1930) – Peschel,Andreas (2145), NRW Class2, 2009.

8.d4 e4 9.Nfd2 Bf5 10.c4 Qe7 11.a4 Nbd7 12.Ba3 b6 13.Nc3 Rfe8 14.Qb3 Rad8 15.Rac1 h5 16.Bd1 Nf8 17.c5 dc5 18.dc5? (18.Nc4=) 18...Qe5?? (18...Rd2 19.cb6 Qd7 20.bc7 Be6–+ (worse is 20...Qc7 21.Ne4 Qd7 22.Nd2 Qd2 23.Bf3+/-)) 19.Nc4+= Qe6 20.cb6 cb6 21.Qa2 N8h7? (better is 21...Ng4+=) 22.Bb3+– Ng4 23.Na5?? (23.Nd6 Qe5 24.Bf7 Kh8+–) 23...Qf6?? (better is 23...Qe5 24.Bf7 Kh8=) 24.Nc6+– Ng5 25.Nd8 Qd8 26.Nd5 Qb8 27.Rc7 Be5 28.Ne7 Re7 29.Re7 Bh2 30.Kh1 Bd6 31.Rb7! Qb7 32.Bd6 Qd7 33.Rd1 Nf2?? 34.Qf2 Qe8 35.Qf4 Ne6 36.Qe5 Qc8 37.Be6 Be6 38.Bc7 Qb7 39.Qd6 h4 40.Qc6 (40.Qc6 Qc6 41.bc6+–; 40.Qd8 Kh7 41.Qh4 Kg7 42.Be5 f6 43.Qf6 Kg8 44.Rd8 Kh7 45.Rh8#) 1–0. elsh1403 – silnygarnek (1735), kurnik, 2011.

8.d4 e4 9.Nfd2 Bf5 10.c4 Qe7 11.Nc3 Nbd7 12.a4 (better is 12.g4!? Ng4 13.Bg4+/-) 12...h5+= 13.Ba3 White prepares c5 13...b6 14.Rc1 Rfe8 15.c5 dc5 16.dc5 Nc5 17.Nb3 Rad8 18.Qc2 Qe5 (18...Nfd7 19.Nd4=) 19.Nc5 (better is 19.Bc5!? bc5 20.Na5+/-) 19...bc5= 20.Bb2 Ng4 21.g3 h4 22.Rfd1? (better is 22.Nd1 Qd6 23.Bg7 Kg7 24.Qc5 Qc5 25.Rc5+=) 22...hg3–+ 23.hg3 Ne3! 24.Rd8? Nc2 25.Re8 Qe8 26.Rc2 e3 27.Rc1 ef2 28.Kf2 Bd4 29.Kg2 Be4 30.Ne4 Qe4 31.Bf3 Qe3 32.Rb1 Qf2 33.Kh3 Qf3 (33...Qf3 34.Bd4 Qf5 35.Kg2 Qe4 36.Kh2 Qb1–+) 0–1. elsh1403 – silnygarnek (1720), kurnik, 2011.

5.c4 Bg7 6.g3 0-0 (--> 1.b4 a5 2.b5 Nf6 3.Bb2 g6 4.c4 Bg7 5.Nf3 0-0 6.g3 d6).

5.e3 e5 6.Be2 =.

5.e3 Bg7 6.Be2 0-0 7.a4 c5 8.c4 Nbd7 9.d3 Nb6 10.Nbd2 Ne8 11.Bg7+= Ng7 12.0-0 d5 13.Qb3 dc4 14.dc4 Nd7 15.Rfd1+/- b6 16.Ne4 Bb7 17.Neg5 Qc7+= 18.Ra2 h6 19.Nh3 Rad8 20.Rad2 Nf6 21.Nf4 Rd2 22.Rd2 Rd8 23.Rd8 Qd8 24.Qc2 g5 25.Nd3+= Be4 26.Nfe5 Qd6 27.Qc3 Nd7 28.Nd7 Qd7 29.f3 Bd3 30.Bd3 Nf5 31.Kf2 f6 32.Qc2 e6 33.Bf5+= ef5 34.g3 (34.Ke2 Kg7+=) ½–½. Bibas,Gratuliano JN – Veloso,Jose Geraldo, corr BRA CBI–A, 1980.

6.d4 d5 7.e3 =.

6.d4 Bg7 7.c4 0-0= 8.Nc3 Re8 9.e3 Bg4 10.Bd3 Nd7 11.h3+/- Bf3 12.Qf3 b6 13.Be4 Rb8 14.0-0 Re6 15.Bd5 Re7 16.Bc6 f5 17.Nd5 Re6 18.Rfe1 Nf6 19.Nf6 Qf6+/- 20.Rad1 Rd8 21.Bd5 Re7 22.a3 ½–½. Woschkat,Karl_Heinz – Gnuechtel,Andreas, CiF, 1992.

6.e3 Be6 +=.

6.e3 Bg7 +=.

5.e3 e5 6.fe5 (6.Nf3 ef4 7.ef4 Be7=) 6...de5+= 7.a4 c5 (7...e4 8.Bc4+=) 8.bc6+= bc6 9.Nf3 Qc7 10.Bc4 Bd6 11.Ng5 0-0 12.e4 (12.Nc3!?+=) 12...Nb6 13.Bb3 (13.Bd3 Rb8–/+) 13...Bg4–+ 14.Qc1 h6 15.h4? (better is 15.Nf7 Rf7 16.Bf7 Qf7 17.Nc3–/+) 15...hg5–+ 16.hg5 (16.d3 gh4 17.Qg5 h3 18.gh3 Bf3–/+) 16...Ne4 17.Rh4 (17.g6 Nd5 18.Nc3 Nec3 19.Bc3–+) 17...Qd7 18.g6 Qf5 (18...Qf5 19.Bf7 Rf7 20.gf7 Kf7 21.Bd4 ed4 22.Rg4 Qf2 23.Kd1 Qf1) 0–1. Nilsson,Nils Roland – Folkunger,Sven, corr SSKK 2–756, 1991.

5.Nf3 d5 =.

5.g3 e5=+ 6.fe5 de5 7.Bg2 Bc5 8.e3 Qe7 (8...0-0 9.Qf3-/+) 9.Nf3 e4 10.Nd4 Ne5 11.0-0 Bg4 12.Qe1 0-0-0 (12...Bd4 13.Bd4 Bf3 14.Nc3 Bg2 15.Kg2=) 13.Nf5= Bf5 14.Rf5 Nc4 (14...Rd5 15.Nc3 Rd2 16.Qd2+/-) 15.Bf6 gf6 16.Qf2 Rd2 1-0. Neuhof - Gustafsson, corr ICCF (year?).

6.fe5 de5 7.Be5? Ne5 8.Ne5 Qd4 9.Nf7 Qa1?! 10.Nh8 Qa2 11.e4 –+.

6.fe5 de5 7.Be5? Ne5 8.Ne5 Qd4 9.Nf7 Kf7?! 10.c3 Qe4 11.d3 –+.

6.fe5 de5 7.Be5? Ne5 8.Ne5 Qd4 9.Nf7 Ng4 –+.

6.fe5 de5 7.Ne5 Ne5 8.Be5 Ng4 9.Bg3 Bd6 10.Nc3? (10.Bd6 Qd6 11.Nc3 Qf4-/+) 10...Bg3 11.hg3 Qf6 (better is 11...Qd6!? 12.Rh3 Qf6 13.Ne4-+) 12.Qb1 Qf2 13.Kd1 Qg3 14.Kc1 Qe1 (15.Kb2 Qd2-+) 0-1. Kaulich,KH - Lederer,Gerhard, corr, 1970.

6.c4 Be7 7.e3 0-0 8.Be2 c5 (8...Re8 9.0-0=) 9.0-0 b6 10.Nc3 Bb7 11.Qc2 Rc8 12.d3 (12.f5 e5+=) 12...Ng4 (12...d5 13.Rac1=) 13.Qd2 f5 14.h3 Ngf6? (better is 14...Nh6!?=) 15.Ng5+/- Qe8 16.Ne6 Qg6? (better is 16...Rf7+-) 17.Bf3 Bf3 18.Nf8 (18.Rf3?! Rfe8 19.Ne2 Qf7+/-) 18...Rf8 19.Rf3 Nh5 (19...Qf7 20.Re1+-) 20.Nd5 Bh4 (20...Re8 21.Ne7 Re7 22.Re1+-) 21.Rd1 (21.Qe1 Bd8+-) 21...Re8 22.d4 (22.Kh2 Nhf6 23.Bf6 Bf6+-) 22...Re6 (22...Ng3+-) 23.Nc7 Re7 24.dc5 Nc5 (24...dc5 25.Qd5 Qf7 26.g4 fg4 27.hg4+-) 25.Qd5 Kf8 (25...Qf7 26.Qf7 Kf7 27.Nd5+-) 26.Na8 Ne4 27.Ba3 Bf2 28.Rf2 Nf2 29.Bd6 Nd1 30.Be7 Ke7 31.Qd1 Ng3 32.Qd5 Ne4? 33.Qb7 Kf8 34.Qc8 Ke7 35.Qc7 Kf8 36.Qd8 Kf7 37.Nc7 (37...Nf6 38.Nd5 Nd5 39.cd5+-; 37.Nb6 Qe6+-) 1-0. Kjaerstad,Eivind J - Johansen,Th, corr Norway, 1968.

6.e3 Be7 7.Be2 0-0 8.c4 Nc5 9.0-0 Ne8 10.d4 Ne4 11.Nbd2 f5 12.Ne4 fe4 13.Nd2 d5 14.a4 Nf6 15.Qb3 Kh8 16.h3 c5 17.Rac1 b6 18.Qc2 Bb7 19.Nb3 cd4 20.Bd4 Rc8 21.c5 bc5 22.Bc5 Bc5 23.Nc5 Qb6 24.Qc3 Rc7 25.Qd4 Rfc8 26.Nb3 Rc1 27.Rc1 Rc1 28.Nc1 Qd4 29.ed4 Nd7 30.Nb3 Kg8 31.Na5 Bc8 32.Nb3 Kf7 33.a5 Nb8 34.a6 Ke7 35.a7 1-0. SSAARR (2060) - worldsonfire (1820), Rated Blitz game, lichess.org, 2014.

5.fe5 Ng4 6.Nf3+= de5 7.e4 Bc5=+ 8.d4 Bb6 9.Na3 ed4 10.Bd4= Qe7 11.Bb6 Qa3 12.Bd4+= Ne3 13.Qd2 Nf1+= 14.Rf1 0-0 15.Qg5 f6 16.Qd5 Kh8 17.Kf2 Qd6 18.c4 Be6 19.Bc5 Bd5 20.Bd6 cd6 21.ed5 Nd7+= 22.Rfe1 Ne5 23.Ne5 fe5 24.Ke3 Rf4 25.Rac1 b6 26.Rf1 Raf8 27.Rf4 Rf4 28.Rc2 Kg8 29.Kd3 Kf7 30.g3 Rg4 31.Rf2 Ke7 32.Rf1 h5 33.Rg1 h4 34.Rg2 g5 35.Rg1 e4 36.Ke3 Kf6 37.Rf1 Ke5 38.Rg1 Kf5 39.c5? hg3 40.cd6? gh2–+ 41.Rh1 Rg3 42.Ke2 Rd3 43.Rh2 Rd5 44.Rh6 Rb5 45.d7 Rd5 46.Rb6 Rd7 47.Rb5 Kf4 48.Ra5 g4 49.Ra8 Rd3 50.Rf8 Kg3 51.Rg8? Ra3 52.Rg7 Ra2 53.Ke3 Kh3 54.Kf4 Rf2 55.Ke4 g3 56.Ke3 Kh2 57.Rg8 Rf7 58.Rh8 Kg1 59.Ke2 g2 60.Rh6 Re7 61.Kd3 Re5 62.Rh8 Kf2 63.Rf8 Ke1 64.Rg8 Re2 65.Rg7 Kf1 66.Rg8 Rf2 0–1. Gerber,Klaus – Mayer,K, corr ICCF EU–ch M, 1960.

6.e3 unclear.

7.Bb2 Bd6–/+ 8.e3 Qh4 9.g3 Bg3 10.Ke2 –/+.

7.Bb2 Bd6–/+ 8.Nf3 Bh2!–/+ 9.e3?? Bg3–+ 10.Ke2 Nf2 11.Qc1 Nh1 12.Bg7 Rg8 13.Qb2 Bg4 14.Kd1 Bf3 15.gf3 Qg5 16.Bf6 Qh5 17.Qd4 Nf2 18.Kc1 Nd7 19.Nc3 Nf6 (20.f4 Qf5–+) 0–1. Sundin,Thommy – Nilsson,H, Sweden ch Sundsvall, 1989.

7.Bb2 Bd6–/+ 8.Nf3 Nh2 9.d3 Qe7 10.Nc3 Bg3 11.Kd2 Bf4 12.Ke1 Bg4 13.Rh2 Bg3–+ 14.Kd2 Bf3 (15.Kc1 Be2 16.Qe2 Bh2 17.Qe7 Ke7–+) 0–1. Ziems,Ernst – Kremer, corr, 1957.

7.d4 Ne5–/+ 8.de5 Qh4 9.g3 Qb4 10.Nd2 Qb5 11.Ngf3 Nc6 12.c4 Qc5 13.Qc2 Qe3 14.Qd3 Bc5 15.Qe3 Be3 16.Rc1 0-0 17.Rc3 Bc5 18.a3 Re8 19.Rd3 Bf5–+ 20.e4 Ne5 21.Ne5 Re5 22.Rd5 Rae8 23.Re5 Re5 24.Kd1 Bd7 25.Nb1 Bg4 26.Be2 Re4 27.Bg4 Rg4 0–1. Schiffler,L – Smith,Olle, corr, 1955.

7.Nf3 Ne5 8.Ne5 Qd4.

7.Bg3!? Bd6 8.Bd6 Qd6 9.Nc3 =+.

7.Bg3 Bd6 8.Bd6 Qf6 9.Bg3 Qa1 10.Nc3 Qd1 11.Nd1 c6 12.e4= Be6 13.Nc3 Nd7 14.Bd6 Nge5 15.d4 Nc4=+ 16.Bf4 Na3 17.Kd1 Nb6 18.Nf3= cb5 19.Nb5 Nb5 20.Bb5 Bd7 21.Bd3 0-0 22.Bc7 Na4+= 23.Ne5 Nb2 24.Kd2+= Nd3 25.Kd3 Ba4 26.c4 f6 27.Nf3 b5 28.c5+/- b4 29.Kc4 Bc2 30.Nd2 Rfe8 31.e5 Ra6 32.Bd6 h5 33.Re1 fe5 34.Re5 Re5 35.Be5 Bf5 36.d5 ½–½. Nemec,Zdenek – Skula,Eugen, CSSR ZK, 1990.

7.Bg3 Qf6 8.c3 Bd6 9.Nf3 0-0?? 10.Bd6+= Qd6 11.e3 Re8 12.Be2 Nd7 13.Qc2 Nc5 14.Ng5 g6= 15.Bg4 Bg4 16.0-0+= f6 17.Nf3 Nd3 18.c4 Bf5 19.Nd4+= Be4 20.Nc3 Nc5 21.Ne4+/- Re4 22.Rf3?? Rae8?? 23.Raf1+/- f5 24.Rf4 R8e7 25.Nf5 gf5+= 26.Rf5 R4e6?? 27.Qc3?? Re8+/- 28.R1f3 Ne4=+ 29.Qa5 Nd2 30.Rg3 Rg6 31.Rg6 hg6 32.Rd5 Nc4 33.Rd6 Na5 34.Rg6 Kh8 35.Rg3 Nc4 36.Kf2 Ra8–/+ 37.a4 Ra4 38.Rg4 Ra2–+ (39.Kg3 Ne3–+) 0–1. Dommaschk,J – Hasler,Ulrich, corr, 1992.

5.e3 Bg7 =.

6.e3 0-0 7.Bc4 Nbd7 8.a4 d5 9.Be2 c5 10.c4 Nb6=+ 11.Na3 Ne4 12.Bg7= Kg7 13.Qc2 Be6 14.0-0 f6 15.Rad1 Rc8 16.d3= Nd6 17.e4 de4 18.de4+= Qc7 19.Nh4 Rcd8 20.Bd3 Bg4 21.Rde1 e5 22.Nb1 Nf7 23.Nc3= ef4 24.Nd5 Nd5 25.ed5= Ne5 26.Be2 Rfe8 27.h3 Bc8 28.Bd1 g5 29.Nf3 b6 30.Qc3 Bf5 31.Bc2? Nf3–+ 32.gf3 Bc2 33.Qc2 Re3 0–1. Vogel,Frank – Lippstreu,Guenter, corr DDR–ch7 sf, 1972.

6.e3 0-0 7.Be2 a4 =.

6.e3 0-0 7.Be2 c5 8.c4 b6 9.0-0 Bb7 10.Nc3 Nbd7 11.Qc2 e6 12.Kh1 Qc7 13.e4 (better is 13.Rab1!?=) 13...Ne4–/+ 14.Ne4 Bb2 15.Qb2 Be4 16.Qc3 Bb7 17.Nh4 Rae8 18.Qh3 d5 19.d3 e5 20.f5 Nf6 21.Kg1 e4 22.g4? (22.de4 Qe5 23.fg6 fg6 A) 24.cd5?? Qd4 (24...Ne4?! 25.Rf8 Rf8 26.Qe6 Qe6 27.de6–/+; 24...Qe4?! 25.Bf3 Qe3 26.Kh1–+) 25.Kh1 Ne4–+ (25...Qe4?! 26.Bf3 Qe5 27.Rad1–/+; 25...Re4?! 26.Rad1 Qa4 27.Ng6 hg6 28.Qh6–/+); B) 24.Rae1 Qd4 25.Kh1 Ne4 26.Rf8 Kf8 27.Qf3 Kg8 28.Rf1–+) 22...Qe5–+ 23.de4 (23.Qe3 ed3 24.Qe5 Re5 25.Bd3 Ng4–+) 23...Qd4 24.Kg2 Re4 25.Bf3 dc4 26.Be4 (26.Kh1 Ng4 27.Be4 Be4 (worse is 27...Qe4 28.Nf3–+) 28.Nf3 Qa1–+) 26...Ne4 (26...Be4?! 27.Nf3 Qb2 28.Kh1 Qb5 29.Rac1–+) 27.Nf3 Ng5 28.Rad1 Qc3 (28...Nf3?! 29.Rd4 Ng5 30.Kg3 Nh3 31.Rd7–+) 29.Qg3 Qc2 (29...Qc2 30.Kg1 Nf3 31.Rf3 Qd1 32.Rf1 Qd4 33.Qf2 Qd5–+) 0–1. Urgelles Paumier,A – Santana Peideaate,G, 3689 J.R. Capablanca IM /2000 G–2, 2002.

6.e4 0-0 7.Bf6 ef6 =+.

6.g3 Bg4 7.Bg2 c6 8.a4 Nbd7 9.bc6 bc6 10.Nd4 Qb6 11.Qc1 d5 12.e3 Rb8 13.Nb3 Nc5 14.Ra3 Bf5 15.Bd4 Nb3=+ 16.Rb3 Qd8 17.Qb2 0-0 18.d3 Rb3 19.Qb3 Qb8 20.Nd2= Ng4 21.Bb6 e5 22.h3+= ef4 23.hg4 fe3 24.Nf1 e2 25.Ke2 Bg4 26.Kf2+/- Qe5 27.Ne3 Re8 28.Ng4 Qe2+= 29.Kg1 Qg4 30.Bf2 Be5 31.Rh4 Qd1= 32.Kh2 Rb8 33.Qa3 Qc2 34.Qc5 Qc5 35.Bc5 Rb3 36.Bf1 Rb1 37.Kg2 g5 38.Rh1 Kg7 39.d4 Rb2=+ 40.Kh3 Bf6 41.Ba6 Rd2 42.Bb7 h5 43.g4 Bd4 44.Bd4 Rd4–+ 45.Bc6 Rg4 46.Rd1 Rc4 (46...d4 47.Rc1–+) 0–1. Neuhof,KE – Ude,HE, corr ICCF EU/M/Gr/180 (year?).

5.Nc3 d5 6.e3 Ba3 7.Bd3 Be6 8.Nge2 Nd7 9.Nd4 Ne5 10.0-0 Nd3 11.cd3 0-0 12.f4 f5 13.Rf3 Re8 14.Rg3 Qf6 15.Rb1 Bc5=+ 16.Nce2 Bb6 17.Qa4 Re7 18.Rc1 Rd8 19.Nb3 Bc8 20.Qa3 Qd6 21.Nc5 Qf6 22.Nd4 h6 23.Qc3 Kh7 24.Rc2 Rde8 25.a4 Ba7 26.Rh3 Bb6 27.Rc1 Ba7 28.Ncb3 Bb6= 29.Qc2 Qd6 30.Nc5 Ba7 31.Nf3 Bb6 32.Rg3 Bc5 33.Qc5 Qc5 34.Rc5 Be6 35.Nd4 h5 36.Rf3 Rd8 37.Rf1 Rd6 38.Rfc1+= Rdd7 39.R5c2 g6 40.Nb3+= b6 41.Nd4 Kg7 42.Kf1 h4 43.Ke2 Kf6 44.Nc6 Re8 45.Ne5 Rde7 46.Rc7 Rc7 47.Rc7 Re7 48.Rc6+– Rb7 49.Nf3 h3 50.gh3 (50...Ke7 51.d4+–) 1–0. Woelfelschneider,Peter – Schulz,Hans_Juergen, TT–04.07 TSC, 2003.

5.c4 Be6 6.e3 =+.

5.Nf3 d5 =.

5.f4 d5 6.e3 =+.

5.f4 f5 6.Nf3 g6 7.a4 Bg7 8.Ra3 Be6 9.Qc1 c6 10.c4 cb5 11.ab5 0-0 12.d4 Nd7?? 13.d5+/- Bd5 14.cd5 Nf6 15.Nc3 Rc8 16.Qd2 Rc3? 17.Qc3+– Nd5 18.Qc4 Nb4 19.e3 Qc8? 20.Qc8 Rc8 21.Kf2 Rc1 22.Ra5 Bc3 23.Ra8 Kg7 24.Ra7 b6 25.Rb7 Nd3 26.Bd3 Rh1 27.Bf1 Bb4 28.g3 (28.Rb6 Bc5 29.Rc6 Be3 30.Ke3 Rf1+–) 1–0. Kleinke,Uwe – Hermann,G, corr DDR–ch I730, 1979.

6.Nc3 Bg7 7.e3 0-0 8.g3 f5 9.Bg2 Nd7 10.d4 Nf6 11.Nge2 Re8 12.Qd3 Rb8 13.0-0 h5 14.h4 Bd7 15.Rad1 c6 16.a4 Qe7 17.Rfe1 Bh6 18.Bf3 Kg7 19.Nf4 Rh8 20.bc6 bc6+= 21.d5 c5 22.Nb5 Kh7 23.e4?? Bf4–/+ 24.gf4 fe4 25.Be4=+ Ne4 26.Re4 Qh4 27.Qg3 Qg3 28.fg3=+ Bb5 29.ab5 Rhe8 30.Re8 Re8 31.Kf2 Kg7 32.Ra1 Ra8 33.Ke3 Kf6 34.Ke4 a4 35.Ra3 Ra7 36.Kd3 Kf5 37.Ke3 Ra8 38.Kf3 f6 39.Kf2 h4–/+ 40.Kf3 hg3 41.Kg3 Ke4 42.b6 Kd4 43.b7 Rb8 44.Ra4 Rb7 45.Kg4 Rb1 46.Ra6 f5 47.Kg5 Kc4 48.Rd6 Rd1 49.Kg6 Rd5 50.Rd5 Kd5 51.Kf5 c4 52.Kg6 c3 53.f5 c2 54.f6 c1Q 55.f7 ½–½. Bulcourf,Carlos (2295) – Emma,Jaime, Buenos Aires BCA op, 1988.

6.e3 Bg7 (6...f5 7.d4=) 7.d4+= 0-0 8.Bd3 c5 (8...Re8 9.Qf3+=) 9.Ne2 (9.bc6 bc6 10.Nf3 f5+=) 9...cd4 (9...Re8 10.Nbc3+=) 10.ed4 b6 11.0-0 Bb7 (11...f5 12.Nbc3+=) 12.Nbc3 (12.Qd2 f5+=) 12...Nd7 (12...f5 13.Qd2=) 13.Be4 (13.Qd2+=) 13...Qc7 (better is 13...Be4!? 14.Ne4 f5+=) 14.Nd5 Bd5 15.Bd5 (15.cd5?! Rae8 16.Rc1 Qb8=) 15...Rac8 16.Re1 (16.Nc3 f5+/-) 16...f5 17.Nf4 (17.Nc3 Qd8+/-) 17...Nf6 18.Bc6 Qd8 (18...d5!? 19.Nd5 Nd5 20.cd5 Qf4+/-) 19.Rb1 (19.Rb1 Qc7 20.Rb2+–; 19.Qd3 Ng4+–) 1–0. Rosner,Dirk – Hilton,Stephen, CiF, 2000.