3…Ng4 4.h3 (better 4.e4 Nf6 5.e5=) 4...Nf2?? (better 4...Nf6=) 5.Kf2+/- Qh4 6.g3 Qb4 7.Qc1 Qb5 8.Nf3 Na6 9.e3 Qc6 10.Bg2 d5 11.Nd4 Qd7 12.c4 (12.Nb3 c5+/-) 12...c6 (12...e5 13.Nf3 e4 14.Ne1+=) 13.cd5+/- cd5 14.Bf1 Nc5 (better 14...Nc7+/-) 15.Bb5+- Qb5 16.Nb5 Nd3 17.Kg2 (17.Kg2 Nc1 18.Rc1+- (18.Bc1?! Kd7+/-)) 1-0. DEFFM – GuestSTXG, freechess.org, 2021.

3…g5 4.e3 Bg7 (4...d5 5.Nf3+=) 5.d4 (5.Nf3 g4 6.Ne5 h5+=) 5...h5 (5...a6 6.c4=) 6.Nh3 g4 7.Nf4 d6 8.Bd3 (8.Nc3 Nbd7+=) 8...Nbd7+= 9.0-0 b6 (9...e5 10.de5 de5 11.Ne2=) 10.Nd2 Bb7 11.a4 (11.Be2 Qe7+=) 11...h4 (11...e5 12.Ne2 h4 13.e4=) 12.a5 (12.Be2 h3 13.g3 e5+=) 12...e5 (12...ba5!? 13.Nc4 h3 14.gh3 Bf3=) 13.a6+/- Bc8 14.Ne2 h3 15.g3 (15.Ng3 hg2 16.Kg2 Kf8+/-) 15...Nf8 (15...0-0!?+=) 16.de5+/- de5 17.Ne4 (17.Be5? Qd5 18.Be4 Ne4 19.Bg7 Rh7-+) 17...Nd5 18.Ba3 Ne6 (18...f5 19.Qe1 fe4 20.Be4+/-) 19.Bc4 f5?? (better 19...Nf6 20.Nf6 Bf6+/-) 20.Bd5+- Qd5 (20...Rb8 21.N4c3 Nc5+-) 21.Qd5 fe4 22.Qa8 Kf7 23.Qa7 Ng5 24.Qc7 Kg6 25.Qb6 Kh5 26.a7 Nf3 27.Kh1 Bd7 28.Qc7 Bb5 29.Qg7 Ra8 (29...Rh6 30.a8Q Bc6 31.Nf4 ef4 32.Qa5 Bd5 33.Qd5 Ne5 34.Qde5) 30.Qh7 Kg5 31.Be7 1-0. DEFFM – Ulokko, freechess.org, 2021.

3…h6 4.e3 Be7 5.Nf3 d6 6.d4 Nbd7 7.Bd3 b6 8.0-0 Bb7 9.Nbd2 c6 10.a4 cb5 (10...0-0!?+=) 11.ab5+/- (11.Bb5?! 0-0=) 11...0-0 12.e4 Re8 13.c4 (13.Qe2 Qc7+/-) 13...Qc8 14.Qc2 Qc7 15.e5 de5 16.de5 Ng4 (16...Nh5 17.Bh7 Kh8 18.Be4+=) 17.Bh7+= Kf8 (17...Kh8 18.Be4 Be4 19.Qe4+/-) 18.Be4+/- Nge5?? (better 18...f6 19.ef6 Bf6+/-) 19.Ne5+- Ne5 20.Be5 Be4 21.Qe4 (21.Qe4 Bd6 22.Bd6 Qd6 23.Nf3+-; 21.Bc7 Bc2 22.Ra2 Bd3-/+) 1-0. DEFFM – GuestZQCJ, freechess.org, 2021.

4.a4 c6 5.c4 d5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 c6 6.c4).

4.a4 d5 5.e3 Bd6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 Bd6).

4.a4 d5 5.e3 Bd7 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 Bd7).

4.a4 d5 5.e3 Be7 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 Be7).

4.c4 d5 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.c4).

(--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6).

4.e3 Be7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 Be7 4.e3 c6).

4.c4 c6 5.e3 cb5 6.cb5 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Qb6 10.Nf3 Qa5 11.Nc3 Bb4 12.Be2 0-0 13.0-0 Nd5 14.Nd5 ed5 15.Bd4 d6 16.Qa1 Qa1 17.Ra1 Bg4 18.d3 Nd7 19.h3 Bf3 20.Bf3 f6 21.Bd5 Kh8 22.Bb7 Rb8 23.Bc6 Ne5 24.Be5 de5 25.d4 ed4 26.ed4 Bc3 27.Rd1 Rd8 28.d5 h6 29.d6 Kg8 30.d7 Kf8 31.Rd3 Be5 32.Re3 Ke7 33.f4 Kd6 34.fe5 fe5 35.Rf3 Ke7 36.g4 g6 37.h4 g5 38.hg5 hg5 39.Rf5 e4 40.Re5 Kf6 41.Re4 Rg8 42.Re8 Kf7 43.Rg8 Kg8 44.d8Q Kf7 45.Qg5 Ke6 46.Qd5 1–0. axtur777 – sandeepmaddali20, lichess.org, 2019.

4.e3 0-0 5.Nf3 c6 6.a4 cb5 7.ab5 b6 8.Be2 Bb7 9.0-0 Nd5 10.d4 e5 11.c4 Nf6 12.de5 Be5 13.Ne5 Qe7 14.Nd2 d6 15.Nef3 Nbd7 16.Qc2 Nc5 17.Rfd1 d5 18.Bd4 dc4 19.Bc4 Ng4 20.h3 Nf6 21.Qb2 Rad8 22.Ra7 Ra8 23.Rda1 Ra7 24.Ra7 Qd7 25.Bf6 gf6 26.Qf6 Ne6 27.Ne5 Qc7 28.Nc6 Qd7 29.Ne7 Qe7 30.Qe7 Bc8 31.Be6 Be6 32.Nf3 Kg7 33.Ng5 Bf5 34.e4 Bg6 35.f4 h6 36.f5 hg5 37.fg6 Kg6 38.Qd6 Kg7 39.Qe5 Kg6 40.Qf5 Kg7 41.Qg5 Kh7 0–1. Orang4Utan (1830) – italianman1 (1715), Hourly SuperBlitz Arena, 2020.

4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Qe7 8.Nf3 h6 9.d4 Ne4 (9...c6!?+=) 10.Bd3+/- f5 11.Be4 (11.Nbd2 Bb4 12.0-0 d5+=) 11...fe4+= 12.Nfd2 Qh4 13.Nc3 0-0 14.Nce4 Be7 (14...b6 15.h3+/-) 15.Ng3 Bd6 (15...Qg5 16.c4+/-) 16.Nf3 Qf6 17.0-0 Bg3 18.hg3 c6? (better 18...Qg6+-) 19.d5 Qe7 20.d6 Qd8 (20...Qf7 21.Ne5 Qe8 22.Qd4 cb5 23.Nc6+-) 21.Qd4 Rf7 22.Ne5 Rf6 (22...Qf8 23.Ng6 Qd8 24.Qa7+-) 23.Qa7 cb5 24.Qb8 Qf8 25.Nf3 Rf5 26.Nh4 (better 26.Be5 Qd8+-) 26...Rh5 (26...Rc5 27.Ng6 Qf7+-) 27.Ng6 Qf7 1-0. DEFFM – RaGhUChOwDaRy, freechess.org, 2021.

4.e3 e5 5.Nf3 Qe7 6.h3 0-0 7.Be2 b6 8.0-0 Bb7 9.d3 a6 10.c4 ab5 11.cb5 c6 12.a4 c5 13.e4 Nh5 14.Nc3 Nf4 15.Qd2 f5 16.ef5 Rf5 17.Ne4 Bc7 18.Nh2 d5 19.Ng3 Rg5 20.Nf3 d4 21.Ng5 Qg5 22.Qd1 Bg2 23.Re1 Bh3 24.Bf3 Ra7 25.Kh2 Qh6 26.Rh1 Bg2 27.Kg1 Bh1 28.Bh1 Nd7 29.Bc1 Qg6 30.Be4 Qg5 31.Bf4 ef4 32.Qh5 Qh5 33.Nh5 Nf6 34.Nf6 gf6 35.Kg2 Be5 36.Kf3 Rg7 37.a5 Rg5 38.a6 f5 39.Bd5 Kg7 40.a7 Rh5 41.a8Q Rh3 42.Ke2 f3 43.Kd2 Bf4 44.Kc2 Rh2 45.Rf1 1–0. Abdullaevich (1950) – slametrd (1925), lichess.org, 2020.

4.e3 Ba3?? 5.Na3+- (5.Ba3?! Qf6 6.f3 Qh4 7.Ke2 Ng3 8.hg3 Qh1+-) 5...0-0 6.Bd3 Nf2 (6...d5+-) 7.Kf2 f5 8.Qh5 g6 (8...a6 9.Nf3+-) 9.Qh6 Rf6 (9...Qe7 10.Nf3+-) 10.Nf3 Qf8 11.Qh4 b6 (11...Rf7 12.Qd4 Qg7 13.Qg7 Rg7 14.Bg7 Kg7+-) 12.Bf6 Bb7 13.Bb2 Bf3 14.gf3 (better 14.Kf3 c5+-) 14...d5 15.Qd4 Kf7 16.Qf6 Ke8 17.Qe6 Kd8 18.Bf6 Qf6 19.Qf6 Kc8 20.Bf5! Kb7 (20...gf5 21.Qe5 Double attack (21.Qe5 Decoy)) 1–0. GuestSBKR – GuestTGVL, freechess.org, 2018.

4.e3 b6 5.Nf3 Bb7 6.Be2 (6.Nc3 d5+=) 6...a6= 7.a4 ab5 8.ab5 Ra1 9.Ba1 d5 10.0-0 Nf6 11.Ne5 Nbd7 12.f4 Be7 13.c4 (13.Bd4 Ne5 14.fe5 Ne4=) 13...0-0 14.Bf3 Qa8 15.Bd4 Ne5 16.fe5 Ne4 17.cd5 Bd5 18.Qc2 Rc8 19.Qb2 (19.d3 Nc5=) 19...h6 20.Bh5 Rf8 21.Bf3 Rd8 22.d3 Nc5 23.Bd5 Qd5 24.Qf2 Rf8 25.Nc3 Qd7 26.Qc2 Ra8 27.Qf2 Qe8 (worse 27...Nd3 28.Qf7 Kh8 29.Qg6+-) 28.Bc5 bc5 29.h3 Bf8 30.Qb2 Qd7 31.Qe2 Ra3 32.Qc2 Be7 33.g3 Qd8 34.Kf2 Bf8 (34...Qa8 35.Rc1=+) 35.Kg2 (35.h4 f6=+) 35...Qa8 36.e4 (36.Kf2!?=+) 36...Qa5–/+ 37.Rc1 c4 (37...g6–/+) 38.d4? (better 38.dc4 Bc5 39.Ne2–/+) 38...Bb4–+ 39.Ne2 c3 40.Qd3 Ra2 41.Qc4 (41.Rc2 Rc2 42.Qc2 Qb5–+) 41...Qa3 42.Rf1 Rd2 43.d5? (43.Rf3–+) 43...c2 44.de6 (44.b6 cb6 45.de6 Qe3 46.ef7 Kh7–+) 44...Qe3 45.ef7 Kh7 46.h4 (46.Rf2 Bc5 47.f8Q Bf8 48.h4–+) 46...Re2 47.Kh3 Bf8 48.e6 (48.h5–+) 48...Qd2 49.e5 (49.e7 Be7 50.f8Q Bf8 51.e5–+) 49...Rh2 50.Kg4 g6 51.h5 gh5 52.Kf5 (52.Kf3 Qd1 53.Ke4 Re2 54.Qe2 Qe2 55.Kd5 Qf1 56.e7 c1Q 57.ef8N Kg7 58.Ne6 Kf7 59.Nd8 Ke8 60.Ke4 Qcc4 61.Ke3 Qfe2) 52...Re2 53.Rf4 c1Q 54.Qe2 (54.e7 Qd7 55.e6 Qe6 56.Qe6 Qc5 57.Qd5 Qd5 58.Kf6 Be7) 54...Qe2 55.e7 Qec2 (55...Qec2 56.Ke6 Qc6 57.bc6 Qc6 58.Kf5 Qg6) 0–1. GuestGGLB – GuestYSGH, freechess.org, 2019.

4.e3 d5 5.Nf3 Bd7 (5...Nd7 6.c4=) 6.a4 (6.Nc3 a6+=) 6...Ng5 (6...a6 7.Nc3+=) 7.Bd3 Nf3 (7...a6 8.0-0+-) 8.Qf3 (8.gf3?! Bc8+=) 8...c6 (8...Bc8 9.e4+-) 9.0-0 cb5 (9...Qg5!? 10.Qe2 Bc5+-) 10.ab5+- a6 (10...Qg5 11.Nc3 a6 12.e4+-) 11.Qg3 (better 11.h3+-) 11...f6?? (better 11...h5+-) 12.Qg6!! hg6 (12...hg6 13.Bg6 Mate attack) 13.Bg6 Ke7 14.Ba3 1–0. GuestPWMT – GuestJTLX, freechess.org, 2020.

4.e3 f6 5.Qh5+= g6 (5...Ke7 6.Bd3 Nd6 7.Nf3+=) 6.Qh4+/– d5 7.f3 (better is 7.d3 Nd6 8.Bf6+/–) 7...g5?? (better is 7...Nd6 8.Bf6 Be7 9.Be7 Qe7 10.Qe7 Ke7+/–) 8.Qh5+- Kd7 9.fe4 de4 (9...c6 10.h4 gh4 11.Qf7 Be7 12.Bf6+-) 10.Qf7 Be7 11.Bc4 c5 (11...c6 12.Qe6 Kc7 13.Qe4+-) 12.Bf6 Rf8 13.Be6 Kc7 (13...Kd6 14.Be7 Qe7 15.Qe7 Ke7 16.Bc8 Rc8+-) 14.Be7 Qe8 (14...Rf7 15.Bd8 Kd8 16.Bf7 Nd7+-) 15.Bf8 Qf7 16.Bf7 Nd7 17.Bg7 a6 18.Nc3 a5 19.Nd5 (19.Ne4 g4 20.h3 g3+-) 19...Kb8 20.b6 (20.Nh3 g4 21.Ng5 b6+-) 20...a4 21.Nh3 Ra6 22.Rb1 a3 23.Ng5 h5 24.Ne4 (24.Bh5!? Ra4 25.Be8 c4+-) 24...h4 25.Bh6 c4 26.Bf4 Ka8 27.Nc7 (27.Nc7 Kb8 28.Na6 Ka8 29.Nc7 Kb8 30.Ne8 Ka8 31.Rb5 Nc5 32.Nc5 Be6 33.Ra5) 1–0. DEFFM – GuestXKRL, freechess.org, 2018.

4.Nf3 c6 5.c4 Qb6 6.e3 d5 7.Bd4 c5 8.Bb2 a6 9.a4 ab5 10.cb5 c4 11.Bd4 Qd6 12.Nc3 f5 13.Ne4 fe4 14.Ne5 g6 15.Nc4 dc4 16.Bh8 e5 17.Bc4 Be6 18.Qb3 Bc4 19.Qc4 Nd7 20.Qg8 Nc5 21.0-0 Ra4 22.Ra4 Na4 23.Qh7 Qb6 24.Bg7 Bb4 25.Be5 Bd2 26.Qg8 Kd7 27.Rd1 Nc5 28.Rd2 Nd3 29.Qd5 Kc8 30.Bd4 Qc7 31.Qe6 Kb8 32.Qe8 Qc8 33.Qc8 Kc8 1–0. Abdullaevich (1755) – Babolander, lichess.org, 2019.

4.e3 b6 5.Nf3 Bb7 6.Be2 Nh7 (6...a6!?=) 7.0-0+= Rg8 (7...a6 8.a4+=) 8.Ne5+/– Nf6 (8...g6 9.Bf3 d5 10.c4+/–) 9.Bh5 g6 10.Bf3 Nd5?? (better is 10...d5+-) 11.c4 f6 12.Ng4 (12.cd5?! fe5 13.de6 e4+-) 12...f5 (12...Bg7+-) 13.Nf6!! (13.cd5?! fg4 14.Bg4 ed5+-) 13...Nf6 14.Bb7 c6 15.Ba8 Ne4 (15...Rh8 16.d3+-) 16.d3 Qg5 (16...Nd6 17.Qa4 cb5 18.cb5 Na6 19.Qa6 Qa8+-) 17.de4 Be7 (17...cb5 18.cb5 fe4 19.Qa4+-) 18.Qa4 f4 19.Qa7 (19.Qa7 f3 20.g3+-) 1–0. DEFFM – GuestCVQH, freechess.org, 2018.

4.e3 b6 5.Nf3 d6 6.Be2. GuestCTDF – GuestNWXY, freechess.org, 2018.

4.a4 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.a4 e6 4.b5 a5).

4.a4 Be7 5.e3 0-0 6.c4 c5 7.Nf3 d5 8.Be2 d4 9.ed4 cd4 10.Bd4 Nbd7 11.0-0 b6 12.Bb2 Bb7 13.d4 Rc8 14.Nbd2 Ne4 15.Ne4 Be4 16.Nd2 Bb7 17.Bf3 Bf3 18.Nf3 (worse 18.gf3 Bb4 19.Ne4 f5=+) 18...Nf6? (better 18...Rc4 19.d5 ed5 20.Qd5 Rc5+=) 19.Ne5+- Qc7 20.Nc6 Bd6 21.h3 Nd7 22.Rc1 Nb8 23.c5 bc5 24.dc5 Be7?? (better 24...Bh2 25.Kh1 Nc6+/-) 25.Ne7 Qe7 26.c6 Rfd8 27.Qb3 Qf6 (27...Rd5+-) 28.Bf6 (28.Bf6 gf6 29.c7+-) 1-0. BeepBeepImAJeep (2595) - Elda64 (2615), Rated Bullet game, lichess.org, 2015.

4.c3 a4 5.a3 b6 6.e4 (better 6.c4!?=) 6...Ne4-/+ 7.Be2 Bb7 8.Bf3 d5 9.d3 Nc5 10.Qc2 Be7 11.Nd2 0-0 12.d4 Ncd7 13.Ne2 c5 14.0-0 Nf6 15.c4 Nbd7 16.Rfe1 Qb8 17.dc5 Nc5 18.Nd4 Rc8 19.Rac1 Nce4 20.Nc6 Bc6 21.bc6 Rc6 22.Ne4 de4 (22...Ne4 23.Re4 de4 24.Qe4-/+) 23.Be4 (better 23.Bf6 Bf6 24.Qe4+=) 23...Ne4-/+ 24.Qe4 Qc8 25.Qg4 Bf8 26.Re3 Ra5 27.Rg3 g6 28.Qd4 e5 29.Qe4 Bg7 30.h4 (30.Rd3 Bf6-/+) 30...h5 31.Rd3 Rac5 32.Rcd1 Qf5 (32...Qe6 33.Rd8 Kh7 34.R8d5-+) 33.Rd8 Kh7 34.Qf5 gf5 35.R1d7 Rc7 36.Rd6 Rc4 37.Rb6 Rh4 38.Ra8 (38.Rbb8 Re4 39.Rd2 Bh6-+) 38...Rhc4 (38...Re4 39.Rb5-+) 39.g3 h4 40.gh4 (40.Rb5 hg3 41.Be5 gf2 42.Kf2 Rc2 43.Kf3 Be5 44.Re5 R7c3 45.Re3 Re3 46.Ke3 Rc3 47.Kf4 Ra3 48.Kf5 Kg7-+) 40...Rh4 (better 40...Rg4 41.Kf1 Rc2 42.Ra5-+) 41.Kf1? (41.Ra5 Re4 42.Rbb5 f6-+) 41...Rg4 (41...Rc2 42.Rbb8 Rf4 43.Kg1 Rff2 44.Ba1-+) 42.Ke2?? (42.Rb5-+) 42...Re4 (42...Rc2 43.Kd1 Rf2 44.Ke1-+) 43.Kf3 (43.Kd2 Rd7 44.Kc2 Rc4 45.Kb1 Rd1 46.Ka2 Rd2-+) 43...Rec4 (better 43...Rc2 44.Ra5-+) 44.Raa6 (44.Ra5 f6 45.Rb4 Rg4 46.Rg4 fg4 47.Kg3 Rc2-+) 44...e4 (44...Rf4 45.Ke3-+) 45.Kf4 (45.Kg2-+) 45...R4c5?? (better 45...Rc2 46.Bg7 Rf2 (46...Kg7?! 47.Kf5 R7c4 48.Rb1-+) 47.Ke5 Kg7-+) 46.Kg5 (46.Bg7 Kg7 47.Ra4 Re7=+) 46...Bb2 47.Rh6?? (better 47.Rb2 Rc2 48.Rc2 Rc2 49.Kf5 Rf2 50.Ke4=) 47…Kg7-+ (47...Kg7 48.Rh1 Rc4-+) 0-1. bjoernsen (2345) - Justin_Luhrman (2410), Rated blitz game, lichess.org, 2021.

4.e3 Bb4 5.Nf3 d6 (5...0-0 6.a3 Be7 7.Be2=) 6.c3 White fights for the Initiative 6...e5? (better 6...Bc5+=) 7.cb4+- Bg4 (7...ab4 8.Qb3+-) 8.ba5 Ra5 9.h3 e4 (9...Bh5+-) 10.hg4 ef3 11.Qf3 b6 (11...d5+-) 12.g5 0-0 (12...Nbd7+-) 13.gf6 c6 14.Rh7! Kh7 (14...Ra3 15.Rg7 Kh8 16.Qh5) 15.Bd3 g6 16.Qh5 Kg8 17.Bg6! fg6 18.Qg6 The nicest combinations are those leading to mate 18...Kh8 19.Qg7 1–0. DEFFM – GuestQBPT, freechess.org, 2020.

4.e3 g6 5.Nf3+= Bg7 6.c4 0-0 7.h4 (7.d4 d6+=) 7...d6 8.h5 Nh5 9.Bg7 Ng7 10.Nc3 (10.d4 f6=) 10...Nd7 11.a4 Ne5 (11...e5 12.d4=+) 12.Ra3 Nf3 13.gf3 (13.Qf3 e5=+) 13...e5–/+ 14.Qa1 f5 15.Nd5 Be6 16.d4 (16.b6 cb6 17.d4 Bd5 18.cd5–/+) 16...Bd5 (better 16...c6!? 17.Nc3 ed4 18.ed4 Qf6–/+) 17.cd5=+ Qf6 18.de5 Qe5 19.Qe5 de5 20.Rc3 Rf7 (20...Ne8 21.Bc4 Nd6 22.Bd3–/+) 21.Bc4 (better 21.d6 cd6 22.Bc4+=) 21...Kf8?? (better 21...Rd7=+) 22.d6+- (22.Rh7?! Ne8 23.Rf7 Kf7 24.d6 Kf8 25.dc7 Nc7+-) 22...Rd7? (better 22...cd6 23.Rh7 Kg8+-) 23.Rh7 Ne8 (23...cd6 24.Rh8 Ke7 25.Ra8 d5+-) 24.Rd7 (24.Rd7 Nd6 25.Bd5+-) 1–0. FeegLood (2585) – Velocity_Chess (2550), lichess.org, 2015.

4.Nf3 (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2).

4.f4 d5 5.Nf3 c5 6.e3 Be7 7.c4 0-0 8.Qc2 h6 9.Rg1 Nh7 (9...Nbd7 10.Nc3+=) 10.g4 Bf6 (10...Bh4!? 11.Kd1 Bf2+=) 11.Bd3 g6 12.Bg6 (better is 12.Bf6!? Qf6 13.Nc3+=) 12...fg6+= 13.Qg6 Kh8 14.Ne5 (better is 14.Bf6 Rf6 15.Qh5=) 14...Qe7?? (better is 14...Nd7 15.Qh6 Ne5 16.Be5 Be5 17.fe5 Qg5 (worse is 17...dc4 18.g5 Qd7 19.g6+-) 18.Qg5 Ng5+=) 15.g5 Bg7?? (15...hg5 16.fg5 Bg7+- (16...Ng5 17.Rg5 Qg7 18.Qh5 Kg8 19.Rg7 Bg7 20.Qg5+-)) 16.Qh6 (better is 16.gh6 Bf6 17.Qg7 Qg7 18.hg7 Kg8 19.gf8R Kf8 20.d3+-) 16...Bh6 (16...Kg8 17.Ng6 Qf7 18.Qg7 Qg7 19.Bg7 Kg7 20.Nf8 Nf8+-) 17.Nf7 Kg8 18.Nh6 1–0. Krantz,Kjell – Schroeder,Dick, Sweden, 1964.

4.g3 a4 5.Na3 d5 6.Bg2 Bc5 7.Nf3 Qe7 8.Qc1 e5 9.0-0 h5 (9...e4 10.Nd4+=) 10.d4 ed4 11.Qg5 (better is 11.h4+=) 11...Ba3?? (11...0-0 12.Qc1 Bf5+= (12...Qe2? 13.Re1 d3 14.Re2 de2 15.c4+-)) 12.Ba3+/– Qa3 13.Qg7 Qf8 (13...Rh7 14.Qf6 Qe7 15.Qe7 Ke7 16.Nd4+/–) 14.Qf6 c5 15.bc6! bc6 (15...bc6 16.Qe5 Double attack; 15...Nc6 16.Nd4 Decoy) 16.Nd4 Rh6 17.Qe5 Qe7 18.Qe7 Ke7 19.c4! dc4 20.Rac1 (20.Rfc1 Be6+/–) 20...Be6 21.Ne6 (21.Nc6?! Nc6 22.Bc6 Rc8 23.Ba4 c3+=) 21...Re6 22.e3 Nd7 23.Rc4 Ne5 24.Rc5 (24.Rh4 a3+/–) 24...Kd6 (24...h4!?+/–) 25.Rfc1+- Ra6 (25...Ra7 26.Be4+- (26.Bc6?! Rc7=)) 26.f4 (26.f4 Nd3 27.Rc6 Rc6 28.Rc6 Ke7 29.Rc3+-) 1–0. Cottarelli,Franco – Scalisi,Salvatore, corr, 1969.

4.g3 d5 5.Nf3 Be7 6.Bg2 0-0 7.a4 c5 8.c4 b6 9.0-0 Bb7 10.Ne5 Nbd7 11.Nd7 (11.Nc6 Bc6 12.bc6 Nb8=) 11...Qd7=+ 12.d4 dc4 13.Bb7 (13.dc5 Bg2 14.Kg2 Bc5 15.Qd7 Nd7=) 13...Qb7 14.Qc2 (better 14.dc5!? Bc5 15.Bf6 gf6 16.e3=+) 14...cd4-+ 15.Qc4 e5 16.Nd2 Rac8 17.Qb3 Rfd8 18.Rac1 Nd5 19.Nc4 Qb8 20.Rfd1 Bb4 21.Ne5? (better 21.f4 ef4 22.Bd4-/+) 21...Rc1-+ (21...Qe5?! 22.Rc8 Rc8 23.Rd4 Qe2 24.Rd5-+) 22.Rc1 (22.Nc6 Rc6! 23.bc6 Nc3 24.Bc3 Bc3-+) 22...Qe5 23.Qc4 (23.Qd3 Bc5-+) 23...h6 (better 23...Nc3 24.Bc3 dc3 25.e3-+) 24.Bd4 Qe4 25.Rd1?? (25.Qd3 Qe6-+) 25...Nf6 (better 25...Nc3! 26.f3 Qc2-+) 26.f3 Qe6 27.Qe6 fe6 28.Bf6 (28.Rd3 Rd4! 29.Rd4-+) 28…Rd1 (28...Rd1 29.Kg2 gf6-+) 0-1. virual (2230) - almasssss (2305), Rated Bullet game, lichess.org, 2021.

5.c3 Be7+= 6.e3 (6.Nf3 0-0=) 6...0-0 (6...d5 7.Nf3+=) 7.c4 (7.Nf3 d5=) 7...d5 (7...d6 8.d4=) 8.Bf6 (8.Nf3 Nbd7=) 8...Bf6+= (worse is 8...gf6 9.Nc3+=) 9.d4 dc4 (9...c5 10.bc6 dc4 11.cb7 Bb7 12.Nf3=) 10.Bc4 (10.Nf3 c5+=) 10...c6 (10...c5 11.Ne2+=) 11.Nc3 (11.Nf3 c5=) 11...c5 12.Nf3 (12.Ne4 cd4 13.Nf6 Qf6 14.Qd4 Qe7=) 12...Re8 (12...cd4 13.ed4 b6 14.Ne4=) 13.Ne5 (better is 13.Ne4!?+=) 13...cd4+= 14.ed4 Qc7 15.Qe2 (15.b6 Qb6 16.Rb1 Qc7+=) 15...Nd7 16.Nf7? (better is 16.Ne4 Be5 17.de5 Ne5 18.Rc1+=) 16...Bd4–+ 17.Qf3?? (17.Nh6 gh6 18.Qg4 Bg7 19.Rc1–+) 17...Qc4 18.Ng5 Bc3 (18...Bc3 19.Qc3 Qc3 20.Ke2 Qe5 21.Ne4 Qe4 22.Kf1 Qd4–+) 0–1. Hey,Roland – Lipovan, corr ICCF EU–II–730, 1980.

5.e3 Be7 6.Nf3 0-0 7.c4 d5 8.Be2 dc4 9.Bc4 Nbd7 10.0-0 Nb6 11.Be2 c5 12.d4 c4 (12...Bd7!?+=) 13.Nbd2+- Qc7 (13...Bd6 14.Rc1+-) 14.Rc1+- Qd8 15.Nc4 White gets in control. 15...Nc4 16.Bc4 b6 17.Ne5 Bb7 18.Be2 Rc8 19.Bf3 Bf3 (19...Rc1!? 20.Bc1 Qc7+-) 20.Qf3+- (20.gf3?! Rc1 21.Qc1 Bd6+-) 20...Nd5 21.Nc6 Qd7 22.Rfd1 (22.e4 Nb4 23.d5 ed5 24.ed5 Bd6+-) 22...Bf6 (22...f5 23.Rd2+-) 23.Rc2 (23.Ba3 Rfe8+-) 23...Rfe8 (23...Nb4 24.Rc3+-) 24.Rdc1 (better 24.Ba3+-) 24...Qd6? (24...Nb4 25.Nb4 ab4 26.Rc8 Rc8 27.Rc8 Qc8 28.h3+-) 25.h3 (25.e4 Bg5 26.Ne5 Bc1 27.Qf7 Kh8 28.Qe8 Re8 29.Nf7 Kg8 30.Nd6 Rd8 31.Rc1 Rd6 32.ed5 Rd5+-) 25...g6? (better 25...Rc7+-) 26.e4 Nb4 (26...Bg5 27.Ne5 (27.ed5?! Bc1 28.Rc1 ed5+-) 27...Bc1 28.Qf7 (28.Bc1?! f5 29.Ba3 Nb4+=; 28.Rc1?! Rc1 29.Bc1 f6+-) 28...Kh8 29.Qe8 (29.Bc1?! Qe7 30.Bg5 Qf7 31.Nf7 Kg7 32.Rc8 Rc8+-; 29.ed5?! Rc2 30.Qe8 Kg7 31.Qf7 Kh8 32.Qf6 Kg8 33.Ng6 Rc7 34.Qh8 Kf7 35.Ne5 Ke7 36.Qh7 Kd8 37.Qg8 Ke7 38.Bc1 Rc1 39.Kh2 Rc3 40.Qf7 Kd8+-) 29...Re8 30.Nf7 Kg7 31.Nd6+-) 27.e5 (27.Qf6!? Nd3 28.Ba1 Rcd8 29.Nd8 Qd8 30.Qd8 Rd8+-) 27...Be5 (27...Qd5 28.Qd5 ed5 29.Nb4 Rc2 30.Nc2+-) 28.de5 Qe7 (28...Qd7 29.Ne7! Qe7 30.Rc8 Nd5+-) 29.Ne7 Re7 (29...Kg7 30.Qf6 Kh6 31.Rc4 Rc4 32.Rc4 Re7 33.Rh4) 30.Rc8 (30.Rc8 Kg7 31.Qf6 Kh6 32.R1c4 Rd7 33.Rh4) 1–0. BeepBeepImAJeep (2635) – holy_spirit (2405), lichess.org, 2016.

5.e4 d5 6.e5 Ne4=.

5.c4 Bb7 6.e3 d5 7.Nf3 Be7 8.Be2 0-0 9.0-0 dc4 10.d4 c5 11.Bc4 cd4 12.Nd4 Nbd7 13.Be2 Rc8 14.Bf3 Qc7 (14...Nd5 15.Nd2=) 15.Bb7 Qb7 16.Nc6 Rc6 17.bc6 Qc6 18.Nd2 Rd8 19.Qc1 Nc5 20.Nf3 Qe4 21.Nd4 (21.Qb1 Qb1 22.Rfb1 Nd5+=) 21...Nd3 (21...Ng4 22.h3 Ne5 23.Qb1=) 22.Qb1 Nb2 (22...Nd5 23.Nf3=) 23.Qb2+= Bc5 24.Nb3 Bd6 25.Rad1 (25.Rfd1 Nd5 26.Qd4 Qd4 27.Nd4 Nc3+=) 25...Nd5 (25...Qa4 26.Nd4 Nd5 27.Rd3=+) 26.h3 (26.Qd4 Qc2 27.Qd3 Qc7+=) 26...Rc8 (26...Qa4!? 27.Nd4 Qb4 28.Qb4 Bb4=+) 27.Rc1 (27.Qd4 Qd4 28.Rd4 Be5=) 27...Rd8 (27...Rc1 28.Qc1 Qa4 29.Qc8 Bf8 30.Nd4=) 28.Rfd1 (28.Qd4 Qg6+=) 28...Re8 (28...Qa4 29.Nd4=+) 29.Qc2 (29.Qd4!? Qg6 30.Qd3+-) 29...Qe5 (29...Qa4 30.e4 Nb4 31.Qc3=) 30.g3+= Qh5?? (30...Ba3 31.Ra1 Be7 32.Nd4+=) 31.Kg2 (31.Qc6 Rf8 32.Qd6+-) 31...h6 (31...Qg5 32.h4 Ne3 33.Kh1+=) 32.Rd4 Ba3 33.Rcd1 Bb4 34.Qc6 Rf8 35.Rg4 (35.Qb5 Qg6 36.Rc1 Rd8+-) 35...Qe5 (35...Nf6 36.Rgd4 Nd5 37.Rd5 ed5 38.Rd5+=) 36.Nd4 Bc5 (36...h5 37.Rh4 g5 38.Rh5 Qe4 39.Kh2=) 37.Nf3 Qb2 38.Qb5?? (better 38.Rd2 Qc3 39.e4+=) 38...Ne3–+ 39.Kg1 Qb5 40.ab5 Nd1 41.Ne5 (41.Kg2 Nf2 42.Rc4 Nd1–+) 41...Nf2 42.Rh4 (42.Rc4 Nd3 43.Rc5 Nc5–+) 42...Nd3 43.Kg2 Ne5 44.Re4 f6 45.Re1 Rd8 46.Rc1 Rd2 47.Kf1 (47.Kh1 Nf3 48.Rc2 Rc2 49.g4 Rh2) 47...Rf2 48.Ke1 (48.Kg1 Nf3 49.Kh1 Rh2) 48...Nf3 49.Kd1 Rd2 0–1. BeepBeepImAJeep (2810) – LeMillionBro (2575), lichess.org, 2020.

5.e3 Bb7 6.Nf3 g6 7.c4 d5 (7...Be7 8.Be2+=) 8.d4 (8.cd5 ed5 9.Be2 Bg7+=) 8...dc4 (8...Bb4 9.Bc3=) 9.Bc4 Bg7 (9...Bb4 10.Nc3+=) 10.Nbd2 (10.Nc3 0-0+/–) 10...Nbd7 11.0-0 (11.Ba3 Rc8+/–) 11...0-0+= 12.Qb3 Re8 13.Qc2 (13.Rac1 c6+=) 13...c5 14.h3 (14.bc6 Bc6 15.e4 Rc8+=) 14...cd4 15.ed4 (15.Nd4!? Rc8 16.Rac1=) 15...Rc8+= 16.Qb3 Ne4 (16...Nd5 17.Rac1+=) 17.Ne4= Be4 18.Ne5 (18.Rac1 Bh6 19.Rc3 Nf6=) 18...Be5+= 19.de5 Qc7 (better is 19...Qg5!? 20.f3 Ne5 21.fe4 Nc4+=) 20.Rac1 (20.Rfc1 Nc5 (20...Ne5? 21.Be2 Bc2 22.Qe3+-) 21.Qe3 Qb7+=) 20...Qb7 (20...Nc5 21.Qg3=) 21.f3+= Nc5 (21...Bd5 22.Rfd1 Nc5 23.Bd5 ed5 24.Qa2+=) 22.Qa2 Bd3 23.Rfd1 Bc4 (23...Red8 24.Ba3 Rd4 25.Rd2+=) 24.Rc4 (24.Qc4 Rc7+=) 24...Red8 25.Rd6 (better is 25.Bd4!?+=) 25...Rd6+= 26.ed6 Qd5 27.d7 (27.Bd4 Qd6 28.Qe2 Qd5+=) 27...Qd7 (27...Qd1 28.Kh2 Qd7 29.Qa3 Qd6 30.f4+=) 28.Rd4 (28.Bd4 Qd6+=) 28...Qc7 (28...Qe7 29.Ba1–/+) 29.Ba3 (29.f4 Qe7+=) 29...Qg3 (better is 29...e5 30.Rc4 Rd8+=) 30.Rd1? (30.Qd2!? Qe5 31.Bb2+=) 30...Qe5 (30...Na4 31.Qd2–+) 31.Qd2 (31.Bc5!? Rc5 32.Qf2–/+) 31...Na4–+ 32.Bb2?? (better is 32.Qd7 Qc7 33.Qd2–+) 32...Qb5 (better is 32...Nb2 33.Rb1 Nc4–+) 33.Qd8 (33.Bf6 Qc5 34.Kh1 Qd5 35.Qd5 ed5 36.Rd5 Nc3–+) 33...Qe8 34.Qd4 (34.Qe8 Re8 35.Be5 Rc8–+) 34...Nb2 35.Qb2 Qc6 (35...b5 36.f4–+) 36.Rb1 Rb8 37.Rc1 Qd6 38.Qb5 Rd8 (38...Qd2 39.Rb1–+) 39.Rc6 (39.Kh1 Qf4 40.Ra1 Rd6–+) 39...Qd4 40.Kh2 (40.Kf1–+) 40...Qf4 41.Kg1 Qg3 (better is 41...Rd1 42.Qf1 Qe3 43.Kh1 Rf1 44.Kh2 Qf4 45.g3 Qd2) 42.Rc1 (42.Qb1 Rd2 43.Rc8 Kg7–+) 42...Rd2 43.Rf1 (43.Qf1–+) 43...Qg2 0–1. GuestDZWH – GuestFTXH, freechess.org, 2018.

5.c4 d5 6.e3 b6 7.Nf3 Ne4 8.Bd3 Nd6 (8...Bd6 9.Qc2 Bb7 10.Nc3=) 9.cd5+= ed5 10.0-0 c4 11.Bc2 Bg4 12.Nc3 Nf5 (better is 12...Nb7!?+/–) 13.h3+- Bf3 14.Qf3 (14.gf3?! Qg5 15.Kh2 Nh4+=) 14...Ne7 15.Ba3 (better is 15.Nd5 Qd5 16.Be4 Qd2 17.Bc1+-) 15...d4?? (better is 15...Ra7+/–) 16.Qa8+- dc3 17.dc3 Nd7 18.Qe4 Nc5 (18...Qc7 19.Rad1+-) 19.Bc5 bc5 20.Rfd1 Qc7 (20...Qc8 21.Rab1 h5 22.b6+-) 21.Qa8 Nc8 (21...Qc8 22.Qa5 h5+-) 22.b6 Qc6 23.Qc6 (23.Qc6 Ke7 24.Rd7 Ke8 25.Qc8) 1–0. DEFFM – GuestYRPR, freechess.org, 2018.

5.c4 d5 6.e3 Nbd7 7.Nf3 Nb6 8.Na3 Bd6 9.Be2 Qc7 (9...Qe7 10.0-0=) 10.0-0 e5 11.d4 e4 12.Nd2 (12.Ne5 cd4 13.ed4 Ba3 14.Ra3 dc4=) 12...cd4 13.Bd4 Bh2 14.Kh1 Be5 15.c5 Nbd7 16.c6 (16.b6 Qd8=) 16...bc6 (16...Nb6!?=+) 17.bc6= Nb8 (17...Qc6? 18.Be5 0-0 19.Bd4+-) 18.Nb5 Qe7 19.Be5 Qe5 20.c7 Na6 (20...Nbd7!?=) 21.Nc4+= Qe6 22.Ncd6 Ke7 23.Qc1 (better 23.Qd4+=) 23...Ne8 (better 23...h5=) 24.Qc6+/- Nd6 25.Qa8 Nb5 (25...Nb7!?+/-) 26.ab5+- Nc7 27.Qa7 Kd8 (27...Qd7 28.Ra5 Ne6+-) 28.b6 (worse 28.Ra5 Qd7 29.Rc1 d4+-) 28...Ne8 29.b7 (29.b7 Bb7 30.Qb7+-) 1-0. wgr069 (2375) - cebulowykrol (2305), Casual Rapid game, lichess.org, 2021.

5.c4 cb5 6.ab5 b6 7.e3 Bb7 8.Nf3 d5 9.Be2 Be7 10.0-0 0-0 11.Nc3 dc4 12.Bc4 Nbd7 13.Be2 Nc5 14.Nd4 (14.d4 Nce4=) 14...e5 (14...Qc7 15.f4=+) 15.Nf3 (15.Nc6 Bc6 16.bc6 Nd3=) 15...e4=+ 16.Nd4 Rc8 17.f3 ef3 18.Bf3 Bf3 19.Qf3 Re8 20.Nc6 (better 20.Na4 Nce4 21.Rfd1+=) 20...Qc7?? (20...Qd2!? 21.Na4 Na4 22.Ne7 Re7 23.Bf6 A) 23...Re3 24.Qg4 Kf8 25.Qc8 (25.Qa4 gf6 26.Ra2 Qb4-/+) 25...Re8 26.Be7 Ke7 27.Qc7 Ke6 28.Qc6 Ke5 29.Qe8 Kd4 30.Ra4 Kd3 31.Qe4 Kc3 32.Qc4 Kb2 33.Ra2; B) 23...Qe3 24.Qe3 Re3=) 21.d4 (better 21.Nd5 Qd6 22.Nce7 (22.Bf6?! Bf6 23.Nb6 Rb8 24.Nb8 Qb6+-; 22.Nf6?! Bf6 23.Bf6 Qf6+/-) 22...Re7 23.Nf6 Kf8 24.Nh7 Ke8 25.Bg7+-) 21...Nd3= 22.Ba3 (worse 22.Ne7 Qe7 23.Ba3 Qd7-/+ (worse 23...Qe3 24.Qe3 Re3 25.Rf6 gf6 26.Nd5=+)) 22...Ba3 23.Ra3 Nb4 24.Raa1? (better 24.Ne5=) 24...Nc6-/+ 25.bc6 Qc6 26.Qc6 (26.Na4!?-/+) 26...Rc6-+ 27.Rac1 Re3 (27...Rec8 28.Ne2-+) 28.Nb5? (better 28.Nd5!? Rc1 29.Rc1-/+) 28...Rc1-+ 29.Rc1 h6 30.Nc7 (30.Kf1 Ne4-+) 30...Rb3 31.Na8 (31.d5 Rd3 32.Rb1 Nd5 33.Nd5 Rd5 34.Rb6 Rd2-+) 31...b5 32.h3 a4 33.Nb6 (33.Kf2-+) 33...b4 (33...a3 34.Kh2-+) 34.d5?? (better 34.Na4 Rd3 35.Rc8 Kh7 36.Rd8-+) 34...a3 35.d6 (35.Rc8 Kh7 36.Ra8 Rd3-+) 35...a2 36.Kh2 Rb1 37.d7 (37.Rc8 Kh7 38.Ra8 a1Q 39.Ra1 Ra1-+) 37...Nd7 38.Rc8 Nf8 39.Nd7 (39.Ra8 a1Q 40.Ra1 Ra1 41.Nc4-+) 39...a1Q 40.Nf8 Qe5 41.g3 Rb2 (41...Rb2 42.Rc2 Rc2 43.Kg1 Qe1; 41...Qe2) 0-1. biktimiroff (1910) - Kielileike (2230), Hourly Bullet Arena, lichess.org, 2020.

5.c4 d5 6.e3 dc4 7.Bc4 Bb4 8.Nf3 0-0 9.0-0 cb5 10.ab5 b6 11.d4 Bb7 12.Nbd2 Nbd7 13.Be2 (13.Ba3 Ba3 14.Ra3 Qe7=) 13...Nd5 14.Nc4 Qf6 15.Nfe5 (15.Ra4 Rfc8=) 15...Ne5 16.Ne5 Qg5 (16...Rfc8 17.Qa4=) 17.Bf3 Rab8 (better 17...Rfc8!?=) 18.Nd7+- Rfd8 (18...Bc3 19.Qb3 Bb2 20.Qb2+=) 19.Nb8+- Rb8 20.Rc1 (20.Qe2!?+-) 20...Bd6+= 21.g3 Qf6 (21...Nc7 22.Bc6+-) 22.Bg2+- h5? (better 22...Qe7+-) 23.e4 (23.Qh5?! Qd8+-) 23...Nb4 (23...Nc7 24.e5 Qd8 25.ed6 Qd6 26.d5 Bd5 27.Re1+-) 24.e5 (24.Qh5?! Qh6 25.Qh6 gh6+-) 24...Qe7 (24...Qf5 25.Bb7 Rb7 26.ed6+-) 25.Bb7 (better 25.ed6 Qd8 26.d5 Qd6+-) 25...Rb7 (25...Qb7 26.ed6 Qd5 27.Qe2+-) 26.ed6 (better 26.Rc8 Qf8 27.Qc1+- (27.ed6?! Qc8 28.Qh5 Nd3=)) 26...Qd6 (26...Qf8+-) 27.Rc8 Kh7 28.Qh5 1–0. BeepBeepImAJeep (2525) – chessok_ir (1875), lichess.org, 2018.

5.c4 d5 6.e3 dc4 7.Bc4 cb5 8.ab5 b6 9.Qf3 (9.Nf3 Bd6=) 9...Ra7 10.Bf6 (10.Qg3 Rc7 11.d3 Bb4 12.Ke2 Nbd7=) 10...Qf6+= 11.Qf6 gf6 12.Nf3 Bg7 (12...Rg8 13.g3+=) 13.Nc3 (13.d4 Bf8=) 13...Nd7 (13...Rc7 14.Be2=) 14.Nd4 (14.d4 Rc7 15.Ra4 Bf8=) 14...Bb7 (14...f5!?+=) 15.Nc6+= Bc6 (15...Ra8!? 16.d4 f5=) 16.bc6+/– Ne5 17.Bb5 Rc7 18.Ne4?? (better is 18.d4 Ng6 19.d5+/–) 18...Ke7 19.Rc1 (19.d4 Nc6 20.Kd2 f5–/+) 19...Rhc8 20.0-0 (20.d4 Nc6 21.Kd2 f5–/+) 20...Nc6 21.Ba6 Rd8 22.Bb5 Rdc8 23.Ba6 Ra8 24.Bb5 Rac8 ½–½. GuestWSJS – GuestKYMX, freechess.org, 2018.

5.e3 cb5 6.ab5 b6 7.c4 Bb7 8.Nf3 d5 9.Be2 dc4 10.Bc4 Nbd7 11.0-0 Rc8 12.Be2 Qc7 13.Nc3 (13.Na3 Be7=) 13...Bd6 14.h3 0-0 15.Rc1 Bb4 16.Nd5 Qd6 17.Nf6 (17.Nb4 Qb4 18.Rb1 Qe4=) 17...Nf6 18.Bf6 gf6 19.Nd4 (19.Qa4 Be4=) 19...f5 (19...Rc1 20.Qc1 Rd8 21.Bf3 Bf3 22.Nf3=) 20.Bf3 (20.Rc8 Rc8 21.Bf3 Bf3 22.Qf3 Bd2=) 20...Bd5 (20...Rc1 21.Qc1 Rc8 22.Qd1 Bf3 23.Qf3 Bd2 24.Nc6=) 21.Bd5 Qd5 (21...Rc1 22.Qc1 Qd5 23.Qc7=) 22.Qe2 Rc5 Attacking the isolated pawn on b5 23.Rc5 bc5 The passed pawn on b5 will quickly become a dangerous weapon 24.Nc6 Qd2 (24...c4 25.Rc1 Qb5 26.Rc4 Kh8+=) 25.Qf3?? (better 25.Qd2 Bd2 26.b6+-) 25...Qd5?? (25...Kh8 26.e4=) 26.Qg3 (better 26.Ne7 Kh8 27.Nd5 ed5 28.Qf5+-) 26...Kh8= 27.Qc7 Attacks the isolani on a5 (worse 27.Nb4 cb4 28.Qh4 Rb8–/+ (28...Qb5?! 29.Qf6 Kg8 30.Qg5 Kh8 31.Qf6 Kg8 32.Qg5 Kh8 33.Qf6=)) 27...c4 28.b6?? (better 28.Na5 c3 29.Nc6+=) 28...Bd6–+ 29.Qd7 (29.e4 fe4 30.Qb7–+) 29...Bh2! 30.Kh2 Qd7 31.Nd4 Qd6 32.f4 Qb6 33.Rc1 Qb4 34.Nc6 (34.Rc2 a4 35.Nc6 Qb3–+) 34...Qb3 (better 34...Qd2 35.Rg1–+) 35.Nd4 (35.Re1–+) 35...Qe3 36.Rc4 a4! 37.Ra4 Qf4 38.Kg1 Rc8 39.Ne2 Qa4 40.Kf2 Qd1 (40...Rc2 41.Kf3 Qe4 42.Kg3 Re2 43.h4 Rg2 44.Kh3 Qf3) 41.Ke3 (41.Kf3 Qd3 42.Kf2 Rc2 43.h4 Qe2 44.Kg3 Qf2 45.Kh3 Qg2) 41...Rd8 (41...e5 42.g3 Rc2 43.Nf4 Qd4 44.Kf3 Qe4) 42.Nd4 (42.Kf3 Rd3 43.Kf2 Rd2 44.Kg3 Qe1 45.Kf4 f6 46.Kf3 Rd3 47.Kf4 Qd2) 42...Rd4 43.Kf2 Qd2 (43...f4 44.g4 Rd2) 44.Kg3 (44.Kg1 Qe1 45.Kh2 e5 46.g3 Rd2) 44...Rf4 (44...Qf4) 45.Kh2 Qf2 46.h4 (46.Kh1 Qe1 47.Kh2 Rf1 48.g3 Qd2) 46...Re4 (46...Rh4) 47.Kh3 (47.h5 Rh4) 47…Rh4 (47...Qh4) 0–1. BeepBeepImAJeep (2555) – DoruAdryan (2320), lichess.org, 2017.

5.e3 cb5 6.ab5 b6 7.c4 Be7 8.Nf3 0-0 9.Be2 d5 10.0-0 dc4 11.Bc4 Nbd7 12.d4 Qc7 (12...Bb7 13.Ba3=) 13.Nbd2 Bb7 14.Rc1 (14.Qa4 Bb4 15.Rfc1 Qd6+=) 14...Qb8 15.Ne5 (15.Qa4 Rc8=) 15...Ne5=+ 16.de5 Nd7 17.Nf3 (17.Bd3 a4=+ (worse 17...Ne5 18.Bh7 Kh7 19.Qh5 Kg8 20.Be5+=)) 17...Bf3 (17...Rd8 18.Bd4–/+) 18.Qf3 (18.Qd7!? Ra7 19.Qd3=) 18...Ne5–/+ 19.Qg3 Bf6 20.Be2 Nd7 21.Bf6 Qg3 22.hg3 Nf6 23.Rc6 Rab8 (23...Rfb8 24.Bf3–/+) 24.Rfc1 (24.Rd1 Rfc8=+) 24...Nd5 25.Bf3 Nb4 26.Rd6 (better 26.Rc7–/+) 26...a4?? (better 26...Rfd8 27.Rd8 Rd8–/+) 27.Ra1 (better 27.Rc4 Nd5 28.Bd5 ed5 29.Ra4+-) 27...Ra8?? (better 27...Rfd8 28.Rd8 Rd8 29.Ra4 Nd3+=) 28.Ba8+- Ra8 29.Ra4!! (29.Rb6?! Kf8+-) 29...Na6 (29...Ra4 Theme: Deflection from d8 30.Rd8 The nicest combinations are those leading to mate) 30.Ra6 (better 30.Rb6 f6 31.Rba6 Re8+-) 30...Rf8 (30...Rc8 31.Rab6 g5 32.Rd7 Rc1 33.Kh2+-) 31.Rab6 g6 (31...h6 32.Rb7 e5 33.Rdd7+-) 32.Rd7 Kg7 (32...h5 33.Rc6 Rb8 34.b6+-) 33.Rbb7 Kh6 34.b6 Rc8 (34...Kg5 35.Ra7 Kf6 36.b7+-) 35.Rdc7 (35.Rbc7 Rb8 36.Rf7 Ra8+-) 35...Rd8 36.Rf7 Rd1 37.Kh2 Kg5 38.Rh7 e5 39.Rbf7 e4 40.f4 (better 40.Rf8 Rd2+-) 40...ef3 41.gf3 (41.b7 Rd8 42.Rc7 (42.gf3?! Rd2 43.Kg1 Rg2 44.Kf1 Rf2 45.Ke1 Re2 46.Kd1 Rd2 47.Kc1 Rc2 48.Kb1 Rb2 49.Ka1 Ra2 50.Ka2=) 42...fg2 43.Kg2 Rd2 44.Kf3+-) 41...Rh1 42.Kg2 The mate threat is f4 (42.Kh1) 42...Rg1 43.Kf2 (43.Kg1) 43...Rf1 44.Ke2 (44.Kf1) 44...Re1 45.Kd3 (45.Ke1) 45...Rd1 (45...Re3 46.Kd4 Rd3 47.Kc4 Rd4 48.Kc5 Rd5 49.Kb4 Rb5 50.Kc4 Rb4 51.Kc5 Rb5 52.Kd4 Rd5 53.Kc3 Rd3 54.Kb4 Rb3 55.Ka5 Rb5 56.Ka6 Rb6 57.Ka7 Ra6 58.Kb7 Ra7 59.Kc6 Ra6 60.Kd7 Ra7 61.Ke6 Ra6 62.Ke5 Re6 63.Kd4 Rd6 64.Kc5 Rc6 65.Kd5 Rc5 66.Kd4 Rc4 67.Ke5 Rc5 68.Kd6 Rc6 69.Ke7 Rc7 70.Ke6 Rc6 71.Kd7 Rc7 72.Kd8 Rc8 73.Kc8=) 46.Ke4 (46.Kc4 Rd4 47.Kc5 Rc4 48.Kb5 Rb4 49.Ka6 Rb6 50.Ka7 Ra6 51.Kb8 Ra8 52.Kb7 Ra7 53.Kc6 Ra6 54.Kc7 Ra7 55.Kd6 Ra6 56.Kc5 Ra5 57.Kb6 Ra6 58.Kb5 Ra5 59.Kc4 Ra4 60.Kd5 Ra5 61.Ke6 Ra6 62.Ke5 Ra5 63.Kd4 Ra4 64.Kd3 Ra3 65.Kd2 Ra2 66.Kc3 Ra3 67.Kc2 Ra2 68.Kd1 Rd2 69.Ke1 Re2 70.Kf1 Re1 71.Kg2 Rg1 72.Kf2 Rg2 73.Kf1 Rf2 74.Kg1 Rg2 75.Kh1 Rh2 76.Rh2=) 46...Rd4= 47.Ke5 (47.Kd4) 47...Rd5 48.Ke6 (48.Kd5) 48...Rd6 49.Ke7 (49.Kd6) 49...Rd7 50.Kf8 Do you see the mate threat? (50.Kd7) 50...Rd8 51.Ke7 Rd7 52.Ke6 (52.Kd7) 52...Rd6 53.Ke7 (53.Kd6) 53…Rd7 ½–½. BeepBeepImAJeep (2680) – bololo (2025), lichess.org, 2016.

5.e3 Ne4 6.c4 (6.Nc3 Nc3 7.Bc3 d5=) 6...Qg5 (6...d5 7.Nc3=) 7.Nf3+= Qc5 (7...Qg4 8.Nc3+=) 8.Ba3 Qf5 9.Bf8 Kf8 10.Be2 Ng5 11.0-0 d5 12.d4 Nd7 13.Nbd2 Qg6 14.c5 Nf6 (better 14...Kg8!?+-) 15.Ne5+- Qh6 16.Ndf3 (16.bc6 bc6 17.Nc6 Nge4 18.Ne4 Ne4+-) 16...Nge4 (16...Nf3 17.Nf3 Ne4+-) 17.bc6 bc6 18.Nc6 The passed pawn on c5 will quickly become a dangerous weapon (better 18.Qb3!?+-) 18...Nc3+- 19.Qc2 Nce4? (better 19...Ne2!? 20.Qe2 Ba6+-) 20.Rab1 g6 (20...Ng4 21.Bd3 Nef2 22.Rf2 Qe3 23.Qe2 Qf2 24.Qf2 Nf2 25.Kf2+-) 21.Rb5 Kg7 22.Ra5 The passed pawn on a4 will quickly become a dangerous weapon (22.Na5?! Ba6 23.Nc6 Bb5 24.ab5 Rhc8+-) 22...Ra5 (22...Bd7 23.Ra8 Ra8 24.Nfe5+-) 23.Na5 Bd7 (23...Ng4 24.Qd3+-) 24.c6 Bc8 25.Nb7 (25.Ne5 Re8+-) 25...Re8 (25...Ng4 26.Nc5 Ne3 27.fe3 Qe3 28.Kh1 Nc5 29.dc5+- (29.Qc5?! Qe2 30.Re1 Qa6+-)) 26.a5 Ng5 (26...Ng4+-) 27.a6 Nge4 (27...Nf3 28.Bf3 e5 29.de5 Ng4 30.Bg4 Bg4+-) 28.a7 Bb7 (28...Bd7 29.cd7 Nd7+-) 29.cb7 Nd7 30.a8Q Nef6 31.Qaa4 (31.Qaa4 Nb8 32.Qc8+-) 1–0. retiponziani (1640) – Eries, ChessWorld.net, 2008.

5.e3 Be7 6.g4 0-0 7.g5 Nd5 (7...Ne4 8.Nc3 d5 9.h4=) 8.h4 (8.Nf3 f6=) 8...Nb4 (8...d6 9.Nf3=) 9.c3 Nd5 10.Bd3 (10.Nf3 d6=) 10...cb5 (10...f5 11.gf6 Nf6 12.Nf3=) 11.ab5 b6 (11...d6=) 12.c4 (better 12.Qc2 f5 13.Nf3+=) 12...Bb7?? (better 12...Nb4 13.Be2 Bb7=+) 13.cd5+- Bd5 14.e4 (better 14.Nf3 d6+-) 14...Bb7 15.h5 (15.Nc3!? d5+-) 15...d5 16.g6! de4 (16...fg6 17.hg6 Combination; 16...hg6 17.hg6 Combination) 17.gf7?? (better 17.gh7 Kh7 18.Qg4+-) 17...Rf7= 18.Bc4 Qc8 (18...e3 19.f3 Bf6 20.Bf6 Qf6 21.de3 Nd7=+) 19.Qb3+= Bd5 (19...a4 20.Ra4 Ra4 21.Qa4+/-) 20.Bd5+/- ed5 21.Qd5 Ra7 (21...Nd7 22.Ne2 (worse 22.Qe4 Bf6 23.Bf6 Nf6-/+) 22...Bf6 23.Bc3+/-) 22.Nh3 (22.h6 Qc2 23.Bg7 e3=) 22...Bc5? (better 22...Qc2 23.Ba3 Rd7+/-) 23.Rg1+- Rad7?? (23...Kf8+-) 24.Rg7 Kf8 25.Rf7 Rf7 26.Ng5 Bf2 27.Kd1 (27.Kf1 Re7 28.Bf6 Ra7 29.Kf2 h6 30.Ne4 Rd7+-) 27...Qg4 (27...Re7 28.Bf6 Ra7 29.Qe4+-) 28.Kc2 (28.Kc2 Qd7 29.Qf7 Qf7 30.Nf7 Kf7 31.Nc3+-) 1-0. Lance5500 (2705) - Dingo123 (2320), lichess.org, 2015.

5.e3 Bb7 6.a4 d5 7.Nf3 Be7 8.Be2 0-0 9.0-0 c5 10.d4 Nbd7 11.Nbd2 Qc7 12.Rc1 Rac8 13.cd5 Nd5 14.h3 Qb8 15.dc5 Nc5 (worse 15...bc5 16.Nc4+=) 16.Nd4 (16.Nc4 Rfd8 17.Nfd2 Qa7=) 16...Qa8 (16...Rfd8 17.Bf3=+) 17.Bf3 (17.Nc4 Rfd8=) 17...Rfd8 (17...Nd3 18.Rc8 Rc8 19.Ba1=) 18.Ba1 (18.Nc4 Qa7=) 18...Bf6 19.Ne4 (19.Nc4 Qb8 20.e4 Nb4=+) 19...Ne4 (19...e5 20.Nc6 Ne3 21.Qe2 Nf1 22.Nf6 gf6 23.Ne7 Kf8 24.Bb7 Qb7 25.Nc8–+) 20.Be4 Rc1 (20...e5!? 21.Rc8 A) 21...Bc8? 22.Nc6 Nc3 23.Bh7 (23.Bc3?! Rd1 24.Rd1 Bb7+=) 23...Kh7 24.Qc2 Ne4 25.Qe4 g6 26.Be5+-; B) 21...Rc8 22.Nc6 Nb4 23.Qh5 Nc6 24.Qh7 Kf8 25.bc6 (25.Bc6?! Bc6 26.bc6 Qc6+=) 25...Bc6 26.Bf5+-; C) 21...Qc8=+) 21.Qc1= Bd4 22.Bd4 Nf6 (better 22...Nf4 23.Bb7 Ne2 24.Kh1 Qb7=) 23.Bb1?? (better 23.Bb7 Qb7 24.Qc6 Qc6 25.bc6+-) 23...Bg2–+ 24.Rd1 Bh1 Threatening mate... how? 25.e4 Be4 (better 25...Bf3 26.Rd3 Be4 (26...Qe4?? 27.Bf6 Qd3 28.Bd3 gf6 29.Qe3+-) 27.Bf6 Rd3 (worse 27...Bd3 28.Bd8 Bb1 29.Bb6+=; 27...gf6? 28.Rd8 Qd8 29.Be4+-) 28.Bd3 gf6 (28...Bd3?! 29.Bd4=) 29.Be4 Qe4–+) 26.Qg5?? (better 26.Be4!? Qe4 27.Bb6=+) 26...Bg6 (26...Bb1 27.Rd2 Rd5 28.Qe3–+) 27.Ba2?? (better 27.Qe3–+) 27...Qf3 28.Rc1 h6 (28...Be4 29.Kh2 h6 30.Qg3 Qg3 31.Kg3 Rd4 32.Bc4–+) 29.Qg2?? (better 29.Qe3 Qh5 30.Bb3–+) 29...Qf4 (better 29...Qg2 30.Kg2 Rd4–+) 30.Be3 Qa4 31.Bc4 Qa3 (31...Nd5 32.Qf3–+) 32.Qc6 Qa4?? (32...Rd6!? 33.Qc7–+) 33.Qb6?? (33.Qg2 Nd5 34.Qf3–+) 33...Rd1–+ 34.Rd1 (34.Bf1 Be4–+) 34...Qd1 35.Kh2 (35.Bf1 Be4 36.Bc5–+) 35...Qf3 (better 35...Be4 36.f3 Qf3 37.Qd8 Kh7–+) 36.Qc6?? (better 36.Qb8 Kh7 37.Qf4 Qf4 38.Bf4–+) 36...Be4 37.Qc8 (37.Qe4 Ne4 38.Kg1–+) 37...Kh7 38.Bf1 Qh1 (38...Nh5 39.Qg8 Kg8 40.Bh6 Qh1) 39.Kg3 Qf1 (39...Qg1 40.Bg2 Qg2 41.Kh4 g5 42.Bg5 hg5) 40.Kf4–+ Qg2 (40...Qd1 41.Qc5 Bg2 42.Bd2 e5 43.Ke5 Nd7 44.Kd6 Qd2 45.Qd5 Qd5 46.Kc7 Ne5 47.f3 Qc5 48.Kb7 Bf3 49.Ka6 Nc4 50.b6 Qb6) 41.Ke5 Qh2 42.Kd4 (42.Bf4 Qh3 43.Bg3 Qf5 44.Kd6 Qb5 45.Kc7–+) 42...Qd6 43.Kc3 Qd3 (43...Qb4) 44.Kb2 Qb5 (44...Qb1 45.Ka3 Bd5 46.Qc4 Bc4 47.Bh6 Qb3) 45.Ka2 Qa4 (45...Bd5 46.Qc4 Bc4 47.Ka1 Qb3 48.Bh6 Qa2) 46.Kb2 Qb4 47.Ka2 (47.Kc1 Qe1 48.Kb2 Qb1 49.Ka3 Bd5 50.Qc4 Bc4 51.Bh6 Qb3) 47...a4 (47...Bd5 48.Qc4 Bc4 49.Ka1 Qa3 50.Kb1 Bd3) 48.Qc1–+ Bd5 (48...Qb3 49.Ka1–+) 49.Ka1 Ne4 50.Qb1 (50.Qb2 Qc4 51.h4 Qd3–+) 50...Qb3 (50...Qa3 51.Qa2 Qa2) 51.Qb3–+ ab3 52.Kb2 Bc4 (52...Kg6 53.Bd4–+) 53.Bd4 (53.f3 Ng5 54.Ka1 Nf3–+) 53...e5 54.Be3 f6 (54...Kg6 55.Bb6–+) 55.f4 (55.f3 Nd6–+) 55...ef4 56.Bf4 g5 57.Bg5 Kg6 (better 57...hg5 58.Ka3 Nf2–+) 58.h4 (58.h4 fg5 59.h5 Kh5 60.Ka3–+; 58.Be3–+). BeepBeepImAJeep (2595) – Gilevich (2325), lichess.org, 2017.

5.Nf3 Be7 6.g3 Bb7 7.Bg2 0-0 8.0-0 c5 9.bc6 (9.Qc2 d5=) 9...dc6 10.Nc3 Qc7 11.Qb3 Nbd7 (11...e5 12.d4 ed4 13.Nd4=) 12.Rfc1 (12.d4 Rad8=) 12...Rfc8 (12...e5 13.d4=) 13.Rab1 Rab8 (13...e5 14.Na4=) 14.d4 Qd8 15.e4 (15.a3 c5 16.Rd1 cd4 17.Rd4 Qc7=) 15...Ba6 (15...b5!? 16.cb5 a4 17.Na4 cb5 18.Rc8 Rc8=) 16.e5+= Ne8 17.Ne4 Nc7 (17...Bb7 18.Rd1+=) 18.Qa4 Ne8+= 19.Qc2 Nc7 20.Qd2 b5 (20...Qf8 21.Qd3+=) 21.c5 (21.Qa5 Ra8 22.Nd6 Rcb8+/–) 21...Nd5 22.Nd6 Bd6 23.ed6 b4 24.Ne5 N7f6 25.g4 (25.Re1 a4+=) 25...Rb7 26.f4 Nd7 (26...a4 27.Re1+=) 27.f5 Ne5 28.de5 Bb5 (28...Qh4 29.Qd4+=) 29.Re1 (29.f6 Qf8+/–) 29...Rcb8 (29...Qh4 30.Re4+/–) 30.f6 g6 (30...Qf8 31.Bd4+/–) 31.h4 (31.Bd4 Qf8+/–) 31...Kh8 32.Be4 Bc4 33.Ra1 a4 (33...b3 34.ab3 Rb3 35.Bd4+/–) 34.Qc1 Bb5 35.Kg2 (35.Bd4 Qe8+/–) 35...Qd7? (35...Qf8 36.Bd5 cd5 37.c6+-) 36.h5 (36.Qh6!? Rg8 37.h5 a3+-) 36...Rg8 37.Qh6 (37.Qh6 Nf6 38.hg6 (38.ef6 e5 39.hg6 Qg4 40.Kf2 Rg6 41.Bg6 Qf3 42.Kf3 e4 43.Ke3 fg6 44.f7) 38...Rg6 39.Bg6 fg6 40.ef6+-) 1–0. Ree,Hans – Dahlin,Gunnar, WchT U26, 1964.

5.e3 b6 6.Nf3 Bb7 7.Be2 d5 8.0-0 Nbd7 9.Nc3 Bd6 10.Na4 0-0 11.h3 Qe7 12.d3 Rab8 13.Rc1 Rfd8 14.Qc2 Ba8 15.Rfd1 h6 16.Qb1 e5 17.cd5 Nd5 18.e4 Nf4 19.Bf1 Bc7 20.g3 Ne6 21.Nh4 g6 22.Bc3 Bd6 23.Nb2 Qf6 24.Nc4 Bf8 25.Qb2 Bg7 26.Be2 Nd4 27.Bd4 cd4 28.Nf3 Bf8 29.Kg2 g5 30.Nh2 Bc5 (30...Bb4!?=) 31.Bg4+= Bb4 (better 31...Bd6+=) 32.Bf5?? (32.Bd7 Rd7 33.Ng4 Qe6+/-) 32...Nc5 (better 32...Qf5! 33.Nf3 Qe6-+) 33.Ng4+/- Qg7 34.Nge5 Qf6 35.Nc6 (better 35.Ng4 Qg7 36.a3+/-) 35...Rbc8?? (better 35...Bc6 36.bc6 Qc6+=) 36.Nd8 Rd8 37.f3 Bc3 38.Qe2 Nd7 39.Bd7 Rd7 40.Rf1 Re7 41.Kh2 Bd5 42.f4 White prepares the advance e5 42...Bc4 43.dc4 Qd6 (43...Qe6 44.e5+-) 44.e5 Qg6 45.f5 (45.Rf2 Qf5+-) 45...Qh7? (better 45...Qf6+/-) 46.Qe4+- Bb2 (46...Re8 47.Kg1+-) 47.Rcd1 (47.Qa8 Re8 48.Qe8 Kg7+-) 47...d3 (47...Kh8 48.e6 Qg8 49.Qc6 fe6 50.Rde1+-) 48.e6 (better 48.Qa8 Re8 49.Qe8 Kg7 50.e6+-) 48...fe6 49.Qa8 Kg7 50.fe6 Qe4 (50...Qg8 51.Qg8 Kg8+-) 51.Qe4 Bf6 (51...Bc3 52.Rd3 Bb2 53.Rd7 Ba1 54.Re7 Kg8 55.Qh7) 52.Rd3 (52.Rd3 Bc3 53.Rd7 Rd7 54.ed7 Bb4 55.Qe8 Bf8 56.Qf8 Kh7 57.Qe7 Kg6 58.Qf7; 52.Rf6 Kf6 53.Rf1 Kg7 54.Qe5 Kg8 55.Rf8 Kh7 56.Qh8 Kg6 57.Rf6 Kh5 58.Qh6) 1-0. bjoernsen (2365) - ansori_ua (2315), Rated blitz game, lichess.org, 2021.

5.e3 b6 6.Nf3 Bb7 7.Be2 Be7 8.0-0 d5 9.d3 Nbd7 10.Qc2 0-0 11.Nbd2 Re8 12.Rac1 h6 13.Rfd1 Bf8 14.h3 e5 15.cd5 Nd5 16.Bf1 g6 17.g3 Bg7 18.e4 Nc7 19.Qb3 (19.d4 ed4 20.Nd4 Qe7=) 19...Ne6 (19...a4!? 20.Qc4 Nf8=+) 20.Nc4= Now all is on e5 20...Nd4 (20...Qc7 21.Bg2=) 21.Bd4 (21.Nd4 a4 22.Qc2 cd4+=) 21...cd4 22.Nd6 Nc5?? (better 22...Re6 23.Nb7 Qb8+=) 23.Qf7+- Kh7 24.Nb7 (24.Ne8?! Qe8 25.Qc7 Rb8+-; 24.Qe8 Qd6 25.Ng5 hg5-+) 24…Qb8 1-0. bjoernsen (2410) - JohnnyAnto (2470), Rated blitz game, lichess.org, 2021.

5.e3 c5 6.a4 Nbd7 7.Nf3 Be7 8.Be2 0-0 9.0-0 Nb6 10.d3 g6 (10...Ng4 11.Nbd2+=) 11.Nbd2+/– Nh5 12.Qc2 f5 (12...f5 13.d4 cd4 14.Bd4 Rb8+/–). Grund,Karl – Beran, corr, 1967.

5.e3 c5 6.d4 b6 7.Nf3 Bb7 8.Be2 Nbd7 9.a4 cd4 10.Bd4 Bb4 11.Bc3 Bc3 12.Nc3 Rc8 13.0-0 0-0 14.Qd4 Qc7 15.Rfc1 dc4 16.Nd2 Rfd8 17.Qc4 (worse is 17.Nc4 Nc5 18.Qf4 Qf4 19.ef4 Nb3–+; 17.Bc4?? Nc5 18.Qh4 Rd2–+) 17...Qe5 18.Qd4 Qg5 19.Nde4 Qg6 20.Bf3 Nc5 21.Nf6 gf6 (21...Qf6?! 22.Qf6 gf6 23.Bb7 Nb7 24.Ne4 Rc1 25.Rc1=) 22.Qg4 Qg4 23.Bg4 Nb3 24.Rab1 Nc1 25.Rc1 Rd3 26.Ne2 Rc1 27.Nc1 Ra3 (27...Ra3 28.h3 Ra1–+) 0–1. Schwichtenberg,Juergen – Robitsch,Hermann (2090), Wch Seniors Gladenbach, 1999.

5.e3 c5 6.Nf3 b6 7.Qa4 Ra7 8.d3 Rd7 9.Nbd2 Bb7 10.h3 d4 11.ed4 cd4 12.Be2 Qc7 13.0-0 Bc5 (13...e5 14.Rae1 Bb4 15.a3=) 14.Rfe1 (14.Nb3 e5 15.Nc5 Qc5+=) 14...0-0= 15.Bf1 Bb4 16.Re2 Qf4 17.g3 Qf5 18.Nd4 (18.Re5 Qg6 19.Nh4+/-) 18...Rd4!-/+ 19.Bd4 Bd2 20.Rd2?? (better 20.f4 Qd3 21.Rd2 Qd2 22.Rd1=+) 20…Qf3 (20...Qf3 21.Bf6 Qh1) 0-1. bjoernsen (2385) - Cadiz81 (2360), Rated blitz game, lichess.org, 2022.

5.e3 c6 6.a4 Bb4 7.Nf3 Nbd7 8.Be2 Qe7 9.0-0 e5 10.d3 e4 11.Nd4 c5? (better 11...Ne5 12.cd5 ed3 13.Bd3 cd5+=) 12.Nf5+- Qe5?? (better 12...Qf8 13.de4 g6+-) 13.Be5 (13.Be5 Ne5 14.Ng7 Kf8 15.Nh5 Nh5 16.Bh5 ed3 17.cd5+-) 1-0. bjoernsen (2400) - Laki4321 (2390), Rated blitz game, lichess.org, 2023.

5.e3 Nbd7 6.Nc3 b6 7.d4 Bb7 8.Nf3 Bb4 9.Bd3 dc4 10.Bc4 Ne4 11.Rc1 Ndf6 12.0-0 Bc3 13.Bc3 Nc3 14.Rc3 0-0 15.Qc1 (15.Ne5 Rc8+=) 15...Qd6 (15...Bf3!? 16.gf3 Nd5 17.Bd5 Qg5 18.Kh1 Qd5 19.Rc7 Qf3 20.Kg1 Rad8=+) 16.Ne5+= Rfd8 17.Be2 Nd5 18.Rc4 f6 19.Nc6 Rf8 20.Bf3 Rae8 21.Bd5 (21.e4!? Nf4 22.e5+/-) 21...ed5 22.Rc2 f5 23.g3 g5 24.Ne5 Re7 25.f4 g4 26.Qb1 Kh8 27.Rfc1 Bc8 (27...Rc8!?+=) 28.Rc6+/- Qd8 29.Qc2 Bd7 30.Rc7 Bc6?? (better 30...Bb5 31.Re7 Qe7+/-) 31.Rc6 (31.Nc6?! Qc7 32.Ne7 Qe7+/-; 31.bc6?! Qc7 32.Qb3 Qd6+/-) 1-0. bjoernsen (2455) - Mukhammadzokhid (2510), Rated blitz game, lichess.org, 2021.

5.e3 Nbd7 6.Nf3=.

5.e3 Be7 6.Nf3 0-0 7.d4 dc4 (7...Bd7 8.Ba3=) 8.Bc4 Nbd7 ½–½. Bartle,Georg (1680) – Filzmeier,Bruno (1780), Wch Seniors, 2003.

5.e3 0-0 6.Nf3 d5 7.Nc3 c6 8.a4 Nbd7 9.Be2 Bb4 10.0-0 Bc3 11.Bc3 Nc5 (11...Ne4 12.Qc2+=) 12.d3 Bd7 13.Qc2 Rc8 14.Ne5 Be8 15.Rfd1 Qe7 (15...Qc7!?+/-) 16.Ba5+- Ncd7 17.Nf3 e5 18.cd5 (18.bc6!? bc6 19.d4 e4+-) 18...Nd5 19.e4 Nf4 20.Bf1 c5 21.Bc3 (21.d4 f5 22.Ne5 Ne5 23.de5 Qe5 24.ef5 Qf5 25.Qf5 Rf5+-) 21...b6 (21...f5!?+=) 22.a5 ba5 23.Ra5 f5 24.b6 Rc6 (24...Nb6 25.Be5 Deflection) 25.b7 (25.Ra7 Qe6+/-) 25...Bh5 26.Ra8 (26.Qa2 Kh8 27.Ne5 Ne5 28.Be5 Qe5+-) 26...Nh3 (26...Bf3 27.gf3 Qg5 28.Kh1 Rg6 29.Qb3 Kh8 30.Qg8 Kg8 31.Rf8 Nf8 32.Bh3 Nh3 33.b8Q Nf2) 27.Kh1+/- Rg6?? (better 27...Rb6 28.Rf8 Qf8+/-) 28.Rf8 Qf8 29.Ne5 Ne5 30.Be5 Rb6 (30...Bd1 31.Qa2 Kh8+-) 31.Rb1 Nf2 (31...Rb7 32.Rb7 Ng5 33.Rb8 Qb8 34.Bb8+-) 32.Kg1 (better 32.Qf2 Rb7 33.Rb7 h6 34.ef5 Bf7+-) 32...Nh3 33.gh3 Rg6 34.Kh1 (better 34.Bg2 Re6 35.b8Q+-) 34...Bf3 35.Bg2! Bg2 (35...Bg2 36.Qg2 Combination; 35...Rg2 36.Qg2 Decoy) 36.Qg2 Rg2 37.Kg2 c4 38.dc4 (38.dc4 fe4 39.b8Q Qb8 40.Rb8 Kf7 41.c5+-) 1-0. bjoernsen (2385) - Silkamsangma (2340), Rated blitz game, lichess.org, 2022.

5.e3 b6 6.Nf3 Bb7 7.Be2 d6 8.0-0 Nbd7 9.d4 0-0 10.Nbd2 Ne8 11.Qc2 g6 12.Rfd1 Bf6 13.Rac1 Bg7 14.Qb1 e5 15.de5 Qe7 (15...de5!? 16.Ba3 Nc5+/-) 16.ed6+- Nd6 17.Bg7 Kg7 18.Nb3 Ne4 19.Rd4 Ndc5 20.Nc5 Nc5 21.Rcd1 Rad8 22.Qb2 f6 23.h4 Ne6 24.Rd8 Rd8 25.Rd8 Qd8 26.Qd2 Qd2 27.Nd2 Nc5 28.Kf1 f5 29.Bf3 Bf3 30.Nf3 Kf6 31.Ke2 h6 32.Nd4 g5 33.hg5 hg5 34.f3 Ke5 Black prepares f4 35.Nc6 Kd6 36.Kd2 f4 37.e4 Ne6 38.Kc3 (better 38.e5 Kd7 39.Kd3+-) 38...Kc5?? (38...Nf8 39.e5 Ke6 40.Kd4+-) 39.Ne5 (39.e5 a4 40.Nb8 c6 41.Nd7) 39...Kd6+- 40.Nf7 Ke7 41.Ne5 Kd6 42.Nd3 c6 43.a4 c5 44.e5 Kd7 45.Nf2 Nd4 46.Ne4 Ke6 47.Ng5 (47.Nf6!? Nf5 48.Nd5 Ke5 49.Nb6 Ke6+-) 47...Ke5+/- 48.Ne4 Nf5 49.Nf2 Ne3? (49...Nd6+/-) 50.Ng4?? (better 50.Nd3 Ke6 51.Nf4 Ke5 52.Nd5 Ng2 53.Nb6+-) 50...Ng4= 51.fg4 Ke4 52.Kd2 Kd4 53.Ke2 (53.g5 Ke5 54.g6+=) 53...Kc4+/- 54.Kf3 (54.g5 Kd5+/-) 54...Kd4 (54...Kb4 55.Ke2 Ka3 56.Kd2=) 55.Kf4 (better 55.g5!? Ke5 56.Kg4+=) 55...c4=+ 56.g5?? (better 56.Kf3 Kd3 57.g5=) 56...c3-+ 57.g6 c2 58.g7 c1Q 59.Kf5 Qc8 60.Kf6 Qg8 61.g4 Kc4 (61...Kc4 62.Kg6 Kb3 63.Kf6 Ka4 64.Kf5 Kb5 65.Kf6 a4 66.Kg6 a3 67.Kf6 a2 68.Ke5 a1Q 69.Kf4 Qf7 70.Kg3 Qh1 71.g8Q Qff3) 0-1. bjoernsen (2385) - Laki4321 (2365), Rated blitz game, lichess.org, 2022.

5.Nf3 b6 6.Nc3 Bb7 7.g3 d5 8.cd5 ed5 9.Bg2 Nbd7 10.0-0 0-0 11.Rc1 c6 (11...Bd6 12.Qc2+=) 12.Nd4 cb5 13.Ncb5 Bc5 (13...Nc5 14.Nf5 Bc6 15.a4 Bb5 16.ab5+-) 14.Nf5 Rb8 (better 14...g6 15.Ne3 Rc8+-) 15.Be5?? (better 15.d4 Bb4 16.a3+-) 15...Ne5–+ 16.d4 Nc4 17.dc5 bc5 18.e4 Nb6?? (18...Ba6 19.a4 Nb2–/+) 19.e5= Nfd7 20.Nbd6 c4? (better 20...Ne5 21.Rc5 Ba6=+) 21.Qg4+- (worse 21.Nb7 Rb7 22.Bd5 Rc7+-) 21...g6 22.Nh6 Kg7 23.Nhf7 Rf7 24.Nf7 Qe7? (better 24...Kf7 25.e6 Kg7 26.ed7 Nd7+-) 25.e6+- Nf6 (25...Qf6 26.Rb1 (26.ed7?! Kf7 27.Rfe1 Bc6+-) 26...Bc6 27.Qe2+-) 26.Qf4 Rf8 (26...Rc8 27.Rb1 Na4 28.Nd6+-) 27.Rfe1 Rf7 (27...Na4 28.g4 Nc5+-) 28.ef7 Qf7 29.Rb1 Na4 30.Qd6 Nc3 (30...Ne4 31.Be4 de4 32.Qe5 Kh6+-) 31.Rb7! Qb7 (31...Qb7 32.Qe7 Double attack (32.Qe7 Decoy)) 32.Re7 Qe7 33.Qe7 Kh6 34.Qf6 Na2 (34...Ne2 35.Kh1 Nd4 36.Qd4 a4 37.Bf3 a3 38.Qf6 c3 39.h4 c2 40.Qf8) 35.Qf8 Kg5 (35...Kh5 36.Bf3 Kg5 37.Qf4) 36.Qf4 Kh5 37.Bf3 1–0. pcmvr – vaingrecsky, net–chess.com, 2019.

5.a3 b6 6.c4 Be7 7.Nf3 Bb7 8.Nc3 0-0 9.Be2 d5 10.d3 (10.Na4 dc4 11.Bc4 Bf3 12.gf3 Bd6+=) 10...Nbd7 (10...dc4 11.dc4 Qc8 12.Na4+=) 11.Qc2 (11.Na4 dc4 12.dc4 Ra7+=) 11...Nc5 12.0-0 dc4 13.dc4 Nce4 (13...Bd6 14.Rad1=) 14.Rfd1 (14.Na4 Ra7+=) 14...Qc8 (14...Bd6 15.Ne4 Be4 16.Qc3+=) 15.Na4 Nc5? (better 15...Ng4!? 16.Rf1 Rd8+=) 16.Nc5+- bc5 (16...Bc5 17.Ng5 h6 18.Bf6 hg5 19.Bb2+-) 17.a4 Be4 18.Qc3 White prepares a5 18...h6 (18...c6 19.b6+-) 19.a5 Rd8 20.Ne5 Ne8 (20...Rd1 21.Bd1 c6 22.Bc2 cb5 23.Be4 Ne4 24.Ng6+-) 21.Bf3 (better 21.f3!? Rd1 22.Rd1 f6+-) 21...Bf3 22.gf3 Bf6 23.Qc2 Rd1 24.Qd1 Nd6 (24...Be5 25.Be5 Ra7 26.Qd3+-) 25.Qc2 (25.Nc6 Kh8 26.Bf6 gf6+-) 25...Nf5 (25...Be5 26.Be5 Qd8 27.f4+-) 26.Nc6 Bb2 27.Qb2 Qd7 28.Qc2 Nh4? (28...Qe8 29.Qe4+-) 29.Qe2 (better 29.Qe4 g5 30.Ne7 Qe7 31.Qa8 Kg7 32.f4+-) 29...e5 30.Ne5 Qh3 31.Qf1 Qf5 (better 31...Qe6!? 32.Nc6 Qf6+/-) 32.f4 f6 33.Nc6?? (33.Qd3 fe5 34.Qf5 Nf5 35.fe5 g5+-) 33...Qe4?? (better 33...Qg4 34.Kh1 Qf3 35.Kg1 Qg4 36.Kh1 Qf3 37.Kg1 Qg4=) 34.Qh3 (34.h3 Kh8+-) 34...Nf3 35.Kf1 (35.Kh1!? Ne1 36.f3 Nf3 37.Qg2+-) 35...Nd2+= 36.Ke2 Nc4 (36...Nb3 37.Ra3 Qc4 38.Kf3 Nd2 39.Kg3=) 37.Qd7 (37.Qg4 Nd6+/-) 37...Qc2+= 38.Kf3 Nd2 39.Kg4 (39.Kg3 Ne4 40.Kh3 Nf2 41.Kh4 Ne4 42.Qd5 Kh8=) 39...Qg6= 40.Kh3 Qh5 41.Kg3?? (better 41.Kg2 Qg6 42.Kh1 Qe4 43.Kg1 Qg6 44.Kh1 Qe4 45.Kg1 Qg6 46.Kh1=) 41...Qf3 42.Kh4 Qf2 (42...g5 43.fg5 fg5) 43.Kh3 Qe3 (43...Qf3 44.Kh4 g5 45.fg5 hg5) 44.Kg4?? (better 44.Kg2 Qe2 45.Kh1 Qe4 46.Kg1 Nf3 47.Kf2 Qc2 48.Kg3-/+) 44...Qf3 45.Kf5 Qh3 (45...Qh3 46.Kg6 Qg2 47.Kh5 Qe2 48.Qg4 g6 49.Kh4 Qh2 50.Qh3 Qf4 51.Qg4 Nf3 52.Kh3 Qh2; 45...Qe4 46.Kg4 h5 47.Kh5 g6 48.Kh4 Qf4 49.Kh3 Qf3 50.Kh4 g5) 0-1. bjoernsen (2355) - mutman (2315), Rated Blitz game, lichess.org, 2016.

5.c4 a3 6.Bc3=.

5.c4 c5 6.Nc3 (6.a3 d5=) 6...a3 7.Bc1 d5 (7...Be7 8.Nf3=) 8.Qb3 (8.Nf3 Nbd7=) 8...Ne4 (8...d4!? 9.Nd1 e5=) 9.Ne4+= (worse is 9.cd5 Qf6 10.Nf3 ed5+=) 9...de4 10.Ba3 Nd7 (10...Bd6 11.Bb2+=) 11.Nh3 (11.Bb2 e5+/–) 11...Ne5 (11...Nb6 12.Bb2+=) 12.Nf4 b6 (12...Bd6 13.Bb2+=) 13.Bb2 f6 (13...Qc7 14.d3+/–) 14.Be2 (14.Qc2 Bd6+/–) 14...Bd6+/– 15.0-0 f5 (15...0-0 16.Rfd1+/–) 16.Bh5 (16.d3 ed3 17.Nd3 Ng6+-) 16...g6+/– 17.Bg6?? (better is 17.Be2+/–) 17...hg6–+ 18.Ng6?? (better is 18.Rfd1 Qg5 19.h3–+) 18...Nf3! 19.gf3 Qg5 A double attack 20.Kh1 Rh2 0–1. Kurschatke,G – Bergmannshoff,P, 1980.

5.Nf3 a3 6.Be5 d6 7.Bf6 Qf6 8.d4 Be7 9.Bd3 0-0 10.0-0 e5 (10...d5 11.e4=) 11.c4 Bg4 12.Be4 c6 13.Nbd2 White plans d5 13...Qe6 14.Re1?? (better 14.bc6 bc6 15.d5+=) 14...f5-+ 15.Bc2 e4 16.d5 cd5 17.Nd4 (17.h3 Bh5 (worse 17...ef3 18.cd5 Qf6 19.hg4 fg4 20.g3-/+) 18.cd5 Qh6 19.Ne4 fe4 20.Be4 Nd7-+) 17...Qg6 (17...Bd1!? 18.Ne6 Bc2 19.Rac1-+) 18.Qb1 (18.Ne2 Bf6 19.Rb1 Be5-/+) 18...Bh3 19.g3 Nd7 (19...dc4!? 20.Qb4 Qf7 21.Qc4 d5-/+) 20.cd5=+ Ne5 21.f4 (21.Qb4 Rfc8=+) 21...ef3-/+ 22.N2f3 Nf3 23.Nf3 Bf6 24.Nd4 Be5 25.Kh1 Rfc8 (better 25...Bg4!? 26.Qb4 Rf6-/+) 26.Bf5= Bf5 27.Qf5 Qf5 28.Nf5 Ba1 29.Ne7 Kf7 30.Nc8 Rc8 31.Ra1 Rc2 32.b6 Kf6 33.Rf1 Ke5 34.Rf7 Ra2 35.Rb7 Kd5 36.Rc7 Ra1 37.Kg2 a2 38.e4 Ke4 39.Ra7 d5 40.b7 Rb1 41.Ra2 Rb7 42.Ra8 (42.Kf2 d4-+) 42...d4 43.Re8 Kd3 44.Kf3 Rf7 45.Kg4 Kd2 46.Kh3 d3 47.Rc8 (47.Kg4-+) 47...Re7 48.Kg4 Ke2 49.Rc1 d2 (49...d2 50.Rg1 Kd3-+) 0-1. onur604 (2320) - tomyumchess (2185), Casual Rapid game, lichess.org, 2021.

5.Nf3 a3 6.Be5 d6 7.Bg3 Ne4 8.Bd3 Qf6 9.c3 (worse 9.Be4 Qa1 10.Nc3 Qd1 11.Kd1 Nd7–/+) 9...Ng3 10.fg3 d5 11.0-0 Qd8?? (better 11...Nd7=) 12.Ne5+- f6 13.Qh5 g6?? (better 13...Ke7 14.Ng6! hg6 15.Qh8 Nd7 16.Bg6 Ne5+-) 14.Bg6! Ke7 (14...hg6 15.Qg6 Double attack (15.Qh8 Pinning; 15.Qh8 Deflection)) 15.Rf6!! Kf6 (15...Nd7 16.Rf7 Kd6 17.Rd7 Bd7 18.Nf7 Kc5 19.Nd8 Rd8+-) 16.Qh4 Ke5 17.Qf4 1–0. DEFFM – GuestVZFM, freechess.org, 2019.

5.c4 c5 6.Nf3 Bb7 7.Be2 d5 8.d3 Nbd7 9.Qb3 Be7 10.Nbd2 0-0 11.Rc1 Rc8 12.h3 Qc7 13.0-0 Qb8 14.Rfd1 Rfd8 15.Qc2 Qa8 16.Qb3 h6 17.Nb1 Bf8 18.Nc3 d4 19.ed4 cd4 20.Na4 Nc5 21.Qc2 Na4 22.Qa4 Bc5 23.Ne1 e5 24.Bf3 e4 25.de4 Ne4 26.Qc2?? (better 26.Nd3=) 26...Nf2!-+ 27.Bb7 (27.Qf2 d3 Passed pawn; 27.Kf2 d3 Double attack (27...d3 Passed pawn)) 27...Qb7 28.Qf5 (28.Qf2 d3 29.Qc5 bc5-+) 28...Nd1 (better 28...d3 29.Kf1 d2-+) 29.Rd1 Qd7 30.Qf3 (30.Qd3 Qe6 31.Nf3 Bb4-+) 30...Qe6 31.Nd3 (31.Qd3 Bb4 32.Nc2 Rc4-+) 31...Qc4 32.Ne5 (32.Rf1 Qa2 33.Rf2 Qb3-+) 32...Qd5 (better 32...Qa2!? 33.Nd3-+) 33.Nc6 Qf3 34.gf3 Rd6 (34...d3 35.Kf1 Rd5 36.Bd4-+) 35.Kf1?? (better 35.Ne7 Kh7 36.Nc8=) 35...Re8-+ 36.Bc1 (36.Bd4 Bd4 37.Rd4 Rd4 38.Nd4 Re3-+) 36...g5 (better 36...d3!? 37.Re1 Rde6 38.Re6 Re6 39.Bf4-+) 37.h4 (37.Rd3 f5-+) 37...f6 (37...gh4 38.Rd3 h3 39.Bf4-+) 38.Kg2 (38.hg5 fg5 39.Rd3 Kf7-+) 38...Kg7 (38...Re2!? 39.Kg3 Ra2 40.Rd3-+) 39.Kg3 Kg6 40.hg5 hg5 41.f4 Re4 42.Kf3 Ree6 43.fg5 fg5 44.Rg1 (44.Rd3 Re1 45.Bd2 Rf6 46.Kg4 Re4 47.Kh3 Bd6 48.Rd4 Re2 49.Rd6 Rd6-+) 44...Rd5 45.Rg4 (45.Kg4-+) 45...d3 46.Bd2 Re2 47.Bc3 (47.Rg2 Rf5 48.Kg3 Rg2 49.Kg2 Rf2 50.Kh1 Rd2 51.Ne5 Kf5 52.Nc4 Re2 53.Nb2 Kf4 54.Nc4 Kg3 55.Ne3 Re1 56.Nf1 Rf1) 47...Rf5 48.Kg3 Bd6 (48...Bd6 49.Ne5 Be5 50.Rf4 Bf4 51.Kg4 Re3 52.Be1 d2 53.Bd2 Rg3) 0-1. bjoernsen (2440) - chEssUnited_1 (2465), Rated blitz game, lichess.org, 2021.

5.Be2 Bb7 6.Bf3 d5 7.c4 c6 8.cd5 cd5 9.Ne2 Nbd7 10.d4 Bd6 11.Ba3 Ba3 12.Na3 0-0 13.0-0 Rc8 14.Rc1 Rc1 15.Qc1 Qe7 16.Qb2 Rc8 17.Rc1 Rc1 18.Qc1 Qb4 19.Qc3 Qc3 20.Nc3 Kf8 21.Na4 Ne8 22.Kf1 Nd6 23.Ke1 Ke7 24.Be2 Kd8 25.Bd3 Ke7 26.h4 (worse is 26.Bh7 g6–/+) 26...f5 27.g3 Nf6? (27...Kf6 28.Ke2=) 28.Nc3?? (better is 28.Nb6!? Nde4 29.Na4+-) 28...Bc8 29.Ne2 Bd7 30.Nf4 Nf7 31.Be2 Kd6 32.Nd3 Bc8 (32...Ne4 33.Nc1=) 33.Nb2 Kc7 34.Nc2 Nd6 35.a4 Nf7 36.Nd3 Kd6 37.Kd2 ½–½. Bulcourf,Carlos (2270) – Castillo,Santiago (2085), Buenos Aires–chT Intercoop, 2004.

5.Be2 Bb7 6.Bf3 d5 7.d3 Nbd7 8.Nd2 e5 9.c4 e4 10.de4 de4 11.Be2 Nc5 12.Qc2 (12.Nh3!?=) 12...Nd3-/+ 13.Bd3?? (better 13.Kf1 Nb2 14.Qb2-/+) 13...ed3-+ (13...Qd3?! 14.Qd3 ed3 15.f3=+) 14.Qc3 Bb4 (better 14...Bg2 15.0-0-0 Bh1-+) 15.Qe5=+ Be7 16.Ngf3 0-0 17.0-0 Bd6 18.Qg5 h6 19.Qh4 Re8 20.Rad1 Be7 21.Qd4 Qd4 22.ed4 Bb4 (better 22...Nh5=) 23.Nb3?? (better 23.Ne5+=) 23...Re2 24.Bc1 (24.Rb1 Bf3 25.gf3 Rae8-+) 24...a4 (better 24...Bf3!? 25.gf3 Ra2-+) 25.Nbd2-/+ Rae8 26.a3 Bd6 27.Rfe1 Nh5 28.g3 g5 29.Kf1? (29.Re2 de2 (worse 29...Re2 30.Ne1+=) 30.Re1 Ng7=+) 29...g4 (better 29...Nf6 30.c5 bc5-+) 30.Nh4-/+ Kh7 31.Nf5? (better 31.Nb1!? Be4 32.Nd2-/+) 31...Bf8 32.Ne3 Bf3?? (better 32...R8e3 33.fe3 Rh2-+) 33.Nf3+- gf3 34.Rd3 Re1 35.Ke1 Bg7 36.Kd1 Re4 37.Bb2 f5 (37...Nf6 38.Nc2+-) 38.Kc2 (better 38.Nf5 Re2 39.Rd2+- (39.Ng7?! Ng7 40.Rd2 Re7+-)) 38...f4 39.gf4 (better 39.Nd1!?+-) 39...Nf4+/- 40.Rd2 Ne2 41.Kd3 Rh4 42.c5?? (42.Nf5 Rg4+-) 42...Bd4?? (42...Nd4 43.cb6 cb6 44.h3=) 43.cb6?? (better 43.Nf5 Bf2 44.Nh4 Bh4 45.cb6 cb6 46.Rd1+-) 43...Bb6= (43...cb6? 44.Nf5 Bf2 45.Nh4 Bh4 46.Rd1+-) 44.Nf5 (44.Be5!?=) 44...Rh2-/+ 45.Bd4 Nf4 (better 45...Rh5 46.Bb6 Rf5 (46...cb6?! 47.Ke4=) 47.Bc7 Rb5-/+) 46.Ke4= Bd4 47.Nd4 Ng6 (better 47...Ne2 48.Ne2 fe2 49.Re2 Rh5+/-) 48.Nf3 Rh5 49.Rd7 (49.Rd5 Rd5 50.Kd5 Ne7 51.Ke6 Nc8+-) 49...Kg8 50.Nd4 (50.Rd5 Rd5 51.Kd5 Nf4 52.Kc6 Ne6+-) 50...Rc5 (50...Re5 51.Kd3 Rc5 52.Rg7 Kg7 53.Ne6 Kf7 54.Nc5 Ne5 55.Kd4 Nf3 56.Kd5+/-) 51.f4 Nf8 (51...Rc1 52.Nf5 Rc4 53.Kd5 Rf4 54.Nh6 Kf8 55.Rc7 Ne7 56.Kc5+/-) 52.Re7 Rc3 53.f5 Ra3 54.f6 (54.Rc7 Ra1+-) 54...Rc3 55.Rg7 (55.Nf5 Kh8 56.Rg7 (56.Nh6?! Rc4 57.Kd5 Rf4+/-) 56...Rc4 57.Kd5+-) 55...Kh8+- 56.Nf3?? (better 56.Nf5 Rc4 57.Kd5+-) 56...a3?? (better 56...Rc4 57.Kf5 Rc1=) 57.Ne5 a2 (57...Rc4 58.Ke3 Rc3 59.Kd2 Rc2 60.Kc2 a2 61.Nf7) 58.Nf7 1-0. bjoernsen (2395) - SUD_mo_sabirelsadig (2350), Rated blitz game, lichess.org, 2021.

5.Be2 Bb7 6.Bf3 Bf3 7.Nf3 Be7 8.0-0 0-0 9.c4 d6 10.d3 Nbd7 11.Nbd2 Nc5 12.Qc2 e5 13.Rfe1 d5? (better 13...Ne6+=) 14.Ne5+- Bd6? (better 14...Re8+-) 15.Nc6 Qd7 16.Bf6 gf6 17.cd5 Kh8 18.d4 Nb7 19.Rac1 Rg8 20.e4 Rg6 21.Nf1 Rag8 22.g3 Qh3 23.Qe2 h5 (23...Nd8 24.Nd8 Rd8 25.Ne3+-) 24.Qf3 h4 25.Qh5 White intends e5 25...Kg7 26.e5 Rh8 27.Qf3 fe5 28.de5 Bc5 29.Rc5 (29.Ne7 hg3 30.Ng3 Be7 31.Rc7 Qh2 32.Kf1 Qh3 33.Ke2 Kf8+-) 29...Nc5 30.Qg2 (30.Ne7 Qg4 31.Qc3 hg3 32.fg3 Rg5+-) 30...Qf5? (30...Qd7+/-) 31.e6?? (better 31.Ne7 Qd7 32.Ng6 fg6 33.gh4+-) 31...h3 32.Qh1 (32.Ne3 Qf6 (32...hg2? 33.Nf5 Kf6 34.ef7+-) 33.Qf1 fe6 34.de6 Ne6+/-) 32...Nd3 (32...Rf6!? 33.f4 fe6=) 33.Re2+= fe6? (33...Nf4 34.Rd2 Rg5= (34...fe6? 35.Ne7 Qf7 36.Ng6 Ng6 37.de6 Qe6 38.Qb7+-)) 34.Ne7+- Qg4 (34...Qh5 35.Qe4 Nc5 36.Qg6 Qg6 37.Ng6 Kg6 38.de6 Re8+-) 35.Ng6?? (better 35.Re4 Nc1 36.Ne3+-) 35…Qe2 (35...Qe2 36.Qf3 Qf3 37.Ne3 Qf2 38.Kh1 Qe1 39.Nf1 Qf1) 0-1. bjoernsen (2430) - Queribus (2415), Rated blitz game, lichess.org, 2021.

5.Nf3 Bb7 6.Be2 Be7 7.0-0 0-0 8.c4 d5 9.d4 Nbd7 10.Nbd2 dc4 11.Nc4 Ne4 (11...c6 12.bc6 Bc6 13.Ba3=) 12.Rc1 Ndf6 13.Nfe5 Re8 (13...Nd5 14.Qa4+=) 14.f3 Nd6 15.e4 Nc4 16.Rc4 Rc8 17.Nc6 Bc6 18.Rc6 Nd7 19.f4 Nb8 20.Rc2 Rf8 (20...Qd7 21.f5+/–) 21.f5 ef5 22.Rf5 c5 23.bc6! Nc6 (23...Nc6 24.d5 Passed pawn; 23...Rc6 24.Bb5 Decoy) 24.Rd5+- Qc7 25.Ba6 Qf4 26.Bc8 Rc8 (26...Qe3 27.Kh1 Rc8 28.Re5+-) 27.Qc1 Qe4 (27...Qc7+-) 28.Re5 (28.Rc6?? Rc6 29.Qd1 Qd5–+) 28...Qg6 29.Re7 h6 (29...Qc2 30.Qc2 Ne7+-) 30.Re3 Qf5 (30...Qd6 31.Kh1 Qd5 32.Rec3+-) 31.Rc6 (31.Rc6 Rc6 32.Re8 Kh7 33.Qc6 Qb1 34.Qc1+-) 1–0. Steinmann,Joachim – Ranby,Hans, corr 3GMMsemi–07, 1998.

5.c4 b6 6.Be2 Bb7 7.Bf3 d5 8.d3 Be7 9.Nd2 Nbd7 10.Rc1 0-0 11.Ne2 Bd6 12.g3 Rb8 13.0-0 Qe7 14.Bg2 Rfd8 15.Qc2 h6 16.Rfd1 Ne5 17.h3 Rbc8 18.Qb1 Bb8 19.f4 Ng6 20.Nf3 e5 21.f5 Nf8 22.cd5 Nd5 23.e4 Nf6 (23...Ne3 24.Rd2=+) 24.Nc3 Rd7 25.Na4 Qd8 (25...Bc7+=) 26.Bf1 (better 26.Ne5!? Re7 27.Nc4+-) 26...Re7= 27.Qa1 N8d7 28.Nd2 Ne8 29.Nc4 Nef6 30.Kf2 Ne8 31.Ne3 f6 (31...Bc7!?=+) 32.Be2 Nd6 33.Nc3 Nf8 34.a3 Re8 35.Qa2 Kh8 36.Qb3 Re7 37.Ncd5 Bd5 38.Nd5 (worse 38.ed5 Qd7=+) 38...Rb7 39.Rd2 Qd7 40.a4 Qd8 41.Bd1 Ba7 42.Qa2 Rd7 43.Bb3 Rb7 44.Rh1 Rd7 45.Bc4 Nc4 46.dc4 Rcc7 47.Qa3 Rb7 48.g4 Bb8 49.h4 Nh7 50.Qg3 1-0. bjoernsen (2310) - skakist1s (2335), Rated blitz game, lichess.org, 2023.

5.c4 b6 6.Nf3 Bb7 7.Be2 d5 8.0-0 Be7 9.Qc2 0-0 10.d3 Nbd7 11.Nc3 Bd6 12.Na4 e5 13.cd5 Nd5 14.Rfd1 Qf6 15.Nd2 Nb4 16.Qc4 Qg6?? (better 16...Bd5 17.Qg4 Be6=) 17.e4+- Rfc8 18.a3 Na6 19.ba6 b5? (19...Ba6 20.Qb3 b5+-) 20.ab7 (better 20.Qb5!? Bc6 21.Qc4 Rcb8+-) 20...bc4 21.bc8Q Rc8 22.Nc4 h5 23.Bc1 h4 24.h3 (24.Na5?! Ra8+=) 24...Bf8 (24...Rd8 25.Nc3+- (25.Na5?! Ra8+/-)) 25.Rb1 (25.Na5?! Qa6 26.Bg4 Qa5 27.Bd7 Rd8+/-) 25...Nb8 (25...Re8 26.Nc3+-) 26.Rb6 Nc6 27.Ne5! Qe6 (27...Ne5 28.Rg6 Pinning (28.Rg6 Deflection)) 28.Bg4 Qe5 29.Bc8 Nd4 30.Be3 (30.Bg4 Bd6 31.f4 Qe7+-) 30...g5 (30...Qe8 31.Nc5! Bc5+-) 31.Bg4 Bd6 32.Bd4 (32.Kf1 Kg7+-) 32...cd4 33.Bf3 (33.Rb3 Kf8+-) 33...Qh2 (33...Ba3 34.Rb7+-) 34.Kf1 Bf8 (34...Ba3 35.Rb5 g4 36.Bg4+-) 35.Rdb1 (35.Rb5!? f6+-) 35...g4 (35...Ba3 36.R6b5 Kf8 37.Rd1+-) 36.hg4 h3 (36...Ba3 37.Rb8 Kg7 38.R8b3+-) 37.gh3 Qh3 38.Ke2 Qh2 39.Rh1 (39.R6b5 Ba3 40.Ra5 Be7+-) 39...Qe5 (39...Qc7 40.Rb2 Ba3 41.Ra2+-) 40.Rh5 (40.Rc6 Qb5 41.Rc4 Qb3+-) 40...Qe8 (40...Qc7 41.Ra5 Qc2 42.Kf1 Qd3 43.Kg2 Qa3+-) 41.e5 (better 41.Ra5 Ba3 42.Rba6+-) 41...f6?? (41...Qa4 42.Rc6 Qa3+-) 42.Bd5 Kg7 43.Rb7 Be7 44.Re7! Qe7 45.f4 (better 45.Be4 Qa3 46.ef6 Kf6 47.Ra5 Qa2 48.Kf3 Kg7+-) 45…Qa3 (45...Qa3 46.ef6 Kf6+-). bjoernsen (2360) - ahlawy2 (2415), Rated blitz game, lichess.org, 2020.

5.c4 b6 6.Nf3 Bb7 7.Be2 d5 8.d4 Bd6 9.0-0 Nbd7 10.Nbd2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d4 Bb7 10.Nbd2 a5).

5.c4 b6 6.Nf3 Bb7 7.Be2 d5 8.cd5 Bd5 9.Nc3 Bb7 10.d4 (10.Rc1 Bd6=) 10...cd4+= 11.Qd4 Qd4 12.Nd4 Nbd7 (12...Bg2!? 13.Rg1 Bb7+=) 13.0-0 g6 (13...Nd5 14.Rac1=) 14.Bf3 (14.Nc6 Bg7+/–) 14...Bf3= 15.Nf3 Bg7 16.Ne2 0-0 17.Rac1 Nc5 18.Rfd1 Rfd8 19.Ned4 Nd5 20.Rc2 (20.Ba1 Rd7=) 20...Ne7 (better is 20...Nb4!? 21.Re2 Na2–+) 21.Rdc1 (21.Rcd2 Rdc8 22.Ba3=) 21...Rac8 (better is 21...Nd3 22.Rb1 Nb2 23.Rcb2 Nf5–/+) 22.Nb3?? (better is 22.Ba3+/–) 22...Bb2 (22...Nb3 23.Rc8 Nc8 24.Rb1–+) 23.Rb2 Nb3 24.Rc8 Rc8 (24...Rc8 25.g3 Rc1 26.Kg2 Nc5–+) 0–1. Fournier,Frederic (2090) – NN, jeu.europe–echecs.com, 2013.

5.c4 d5 6.Bf6 (6.Nf3 Bd6=) 6...Qf6+= 7.Nc3 Qd8 (7...dc4 8.Bc4 Qg6 9.Qf3=) 8.Nf3 Be7 9.Qc2 (9.d4 cd4 10.Nd4 e5=) 9...dc4 (9...d4 10.Ne4+=) 10.Bc4= Nd7 (10...0-0 11.0-0=) 11.0-0 Qc7 12.Rac1 (12.Rfc1 0-0+=) 12...0-0 13.Ne4 a4 (13...Ne5 14.Ne5 Qe5 15.d3=) 14.d4+= cd4 15.ed4 (15.Nd4 Ne5+=) 15...Nf6 (15...Qf4 16.d5 ed5 17.Bd5=) 16.Rfd1 (16.Nf6 Bf6 17.Qh7 Kh7 18.Bd3 g6 19.Rc7 Bd8+/–) 16...Qf4 17.Neg5 (17.Bd3 Nd5=) 17...h6 18.g3 Qc7 19.Ne4 b6 (19...Ne4 20.Qe4 Qd6 21.d5+=) 20.Ne5 (20.Nf6 Bf6 21.Qh7 Kh7 22.Bd3 g6 23.Rc7 Bd8=) 20...Bb7+= 21.Nf6 Bf6 22.Nc6 (22.Qh7 Kh7 23.Bd3 Kg8 24.Rc7 Bd5=) 22...Bg5 (22...Bc6!? 23.bc6 Qc6+=) 23.f4= Bf6 (23...Bc6 24.bc6 Bf6 25.Qe4=) 24.d5+= ed5 25.Bd5 a3 26.Qf5 Bc8 27.Qe4 (better is 27.Qg6+=) 27...Bg4+- 28.Ne5 Be5 29.fe5 (better is 29.Rc7 Bc7 30.Ba8 Bd1 31.Qc6+-) 29...Qd7 30.e6 (30.Ba8?! Bd1 31.Bc6 Qg4+=) 30...Be6 31.Ba8 Qb5 32.Bd5 Bh3 (32...Bd5 33.Rd5 Qb2 34.Rc2 Qb1 35.Kg2+-) 33.Qc4 (33.Rc7 Bd7+-) 33...Qb2 34.Rc2 Qe5 35.Qf4 (35.Qf4 Qf4 36.gf4+-; 35.Bf7!? Kh7+-) 1–0. Bulcourf,Carlos (2205) – Devcic,Marcos (2365), Buenos Aires Konex, 1991.

5.Nf3 b6 6.c4 Bb7 7.Be2 d5 8.0-0 Nbd7 9.Qc2 g6 10.d3 Bg7 11.Nbd2 0-0 12.Rac1 Rc8 13.Rfd1 Qc7 14.h3 Qb8 15.Qb1 Qa8 16.Qa1 Ne8 17.Bg7 Ng7 18.Bf1 Rfe8 19.Ne5 Ne5 20.Qe5 Qb8 21.Qb8 Rb8 22.g3 Red8 23.Bg2 Nf5 24.Kf1 h5 25.Ke2 (25.e4 Nd4=) 25...Rd7 (better 25...dc4!? 26.Be4 cd3 27.Bd3 Bg2-/+) 26.Nf3+= f6 27.g4 hg4 28.hg4 Nd6 29.cd5 ed5 30.a4 Re7 31.Nh4 Kg7 32.d4 c4 33.Kd2 g5 34.Nf3 Ne4 35.Ke2 Bc8 36.Nh2 1-0. bjoernsen (2305) - JIL_BATCH4 (2450), Rated blitz game, lichess.org, 2017.

5.c4 0-0 6.a4 d5 7.Nf3 dc4 8.Bc4 c6 9.0-0 cb5 10.ab5 Nbd7 11.d4 Be7 12.Nbd2 Nb6 13.Bd3 Nbd5 14.Ne5 Nb4 15.Be2 Nfd5 16.Bf3 (16.g3 f6 17.Nec4 f5+=) 16...Bd7 17.Nd7 Qd7 18.Qa4 (18.Be2 Nb6=) 18...b6 (better 18...Rfc8-/+) 19.Nc4+= Rab8 20.Ne5 Qb7 21.Ba3 Rfd8 22.Bb4 Bb4 23.Nc6 Qd7 24.Nb8 Rb8 25.Rac1 g6 26.Rc6 Kg7 27.Rfc1 h5 28.h3 Rb7 29.Qa1 Qe7 30.e4 Nf4 31.d5 Kh7 32.Qe5?? (better 32.de6 fe6 33.e5+-) 32...Nd3= 33.Qd4 Nc1 34.Rc8?? (better 34.Rc1 Bc5 35.Qa4=+) 34...e5-+ 35.Qc4 Ne2?? (better 35...Bd2 36.Qc6 Qd7-+) 36.Qe2= Bc5 37.Rc6 Qg5 38.Kh2 (better 38.Qc2!?=) 38...a4-/+ 39.g3 a3 40.Qa2?? (40.h4 Qc1 41.Bh5 Qb2-+ (worse 41...gh5 42.Qh5 Kg8 43.Rc8 Bf8 44.Qg4 Kh7 45.Rf8 Qg1 46.Kg1 a2 47.Qg8 Kh6 48.Qh8 Kg6 49.Rg8)) 40...Ra7 (better 40...Qc1 41.Be2 Qe1-+) 41.Rc8?? (41.Rc5!? bc5 42.b6-+) 41...Kg7 (better 41...Bf2 42.Qf2 a2-+) 42.Bg2 h4 43.Rc6 (43.Rc5 bc5 44.b6-+) 43...hg3 44.fg3 Qe3 45.d6 (45.h4 Qd4 46.Rc5 Qc5 47.Bf1-+) 45…Qg1 0-1. BeepBeepImAJeep (2545) - Bad4life (2315), Rated Bullet game, lichess.org, 2015.

5.c4 d5 6.a4 dc4 7.Nf3 0-0 8.Bc4 c6 9.0-0 cb5 10.ab5 b6 11.d4 Bb4 12.Be2 Bb7 13.Nbd2 Qe7 14.Ne5 Nbd7 (14...Rc8 15.Bf3 Nd5 16.Rc1 Rc1 17.Qc1=) 15.Bf3 (better 15.Nc6!? Qe8 16.Nc4+/-) 15...Ne5 16.de5 Nd5 17.Ne4 Rfd8 18.Qb3 Rac8 19.Rac1 h6 20.h3 Rc5?? (20...Rc1 21.Rc1 Rc8 22.Rc8 Bc8 23.Qd1=) 21.Bd4?? (better 21.Nc5 Bc5 22.Rfd1+-) 21...Rc1= 22.Rc1 Ra8 23.Ng3 a4 24.Qa2 a3 25.Ne2 Ba5 26.Ng3 g6 (26...Rc8 27.Rc8 Bc8 28.Ne4=+) 27.Be4 (27.Ne4 Bb4+=) 27...Kh7 (27...Bb4 28.Bf3-/+) 28.Bb1 Rc8 29.Rc8 Bc8 30.Qe2? (30.Ne4 Bb4=+) 30...Bd7?? (30...Bc3 31.Ba2 Bd4 32.ed4-+) 31.Ba2? (better 31.Ne4=+) 31...Qb4?? (better 31...Nc3 32.Qc2 Na2 33.Qa2 Bb5-+) 32.Ne4+/- Qe1? (better 32...Bb5 33.Qf3 Qe7 34.Bd5 ed5 35.Nf6 Kg7 36.Qd5 Bb4 37.Qb5 Bc5+-) 33.Qe1+- Be1 34.Nd6?? (better 34.Bd5 Bb5 35.Ba2+-) 34...Kg7?? (34...Bc3 35.Nf7 Bd4 36.ed4-+) 35.e4 (better 35.Bd5 Kf8 36.Bc4+-) 35...Bc3-+ 36.Bb3 (36.ed5 Bd4 37.Nc4-+) 36...Bd4 37.ed5 (37.Nc4 Nc3 38.Na3 Ne4-+) 37...ed5 38.Bd5 (38.Nb7 Be5 39.Nd8 Bb5 40.Bd5 Be8-+) 38...Be5 (better 38...Be6 39.Be6 fe6 40.Kf1-+) 39.Nc4 (39.Nf7 Bc7 40.f4 Bf4 41.Nd8-+) 39...Bd4 (better 39...a2 40.g3 a1Q 41.Kg2 Bd4-+) 40.Na3-/+ Bc5 41.Bc6 Ba3 (better 41...Be6!? 42.Nc2 Kf6-/+) 42.Bd7= Bc5 43.Bc6 Kf6 44.Kf1 g5 45.Ke2 Kg6 46.f3 f6 47.g4 f5 48.Kd3 fg4 49.fg4 Kf6 50.Ke4 Ke6 51.Be8 Kf6 52.Bd7 Bb4 53.Bf5 Bc5 54.Kd5 Bf2 55.Kc6 Bg1 56.Kd7 Bf2 57.Ke8 Bg1 58.Kf8 Bd4 59.Kg8 Ke5 60.Kh7 Kf4 61.Kh6 1-0. BeepBeepImAJeep (2530) - Bad4life (2325), Rated Bullet game, lichess.org, 2015.

5.c4 0-0 6.Nc3 d5 7.Nf3 Nbd7 8.Be2 dc4 9.Bc4 Nb6 10.Be2 Nbd5 11.d3 b6 12.0-0 Bb7 13.e4 Nf4 14.Re1 Ne2 15.Qe2 Nd7 16.Na4 Nc5 17.Nc5 Bc5 18.Rac1 Qe7 19.Red1 Rfd8 20.Ne5 f6 21.Nc6 (21.d4 fe5 22.dc5 Rd1 23.Qd1 Be4 24.Qe2+/- (24.Be5?! Qg5 25.Bg3 bc5+=)) 21...Bc6=+ 22.bc6 e5 23.Qc2 Bd4 24.Qc4 Kh8 25.Rc2? (25.Bc3 Rd6=+) 25...h6?? (better 25...b5 26.Qb5 Rdb8-+) 26.Bc1= Bc5 27.g3 (27.Be3!?=) 27...Rd4=+ 28.Qb3 Rad8 29.Kg2 (29.Be3 Re4 30.Bc5 bc5 31.de4 Rd1 32.Kg2 Qd6-/+) 29...Qd6 (better 29...Rb4 30.Qc3 Re4 31.de4 Rd1-/+) 30.Qf7? (30.Be3 Rb4 31.Bc5 bc5=+) 30...Qe7?? (30...Qc6 31.Rc4-+) 31.Qg6?? (31.Qe7 Be7 32.Be3 R4d6= (worse 32...Rd3 33.Rd3 Rd3 34.Bb6+-)) 31...Qe8?? (31...Rd3 32.Rd3 Rd3 33.Bd2-+) 32.Qf5?? (better 32.Qe8 Re8 33.Be3+=) 32...Rd3-+ 33.Rd3 Rd3 34.h4 Qc6 35.Qg6 Qd7 36.h5 Rd1 37.f4?? (better 37.Bh6 gh6 38.Qh6 Qh7 39.Qf6 Qg7 40.Qg7 Kg7 41.g4-+) 37...Rg1 38.Kf3 (38.Kh2 Rh1! 39.Kg2 Qh3 40.Kf3 Rf1 41.Ke2 Rf2 42.Kd3 Qd7 43.Kc4 Rc2 44.Kb3 Qd3 45.Ka4 Qc4) 38...Rc1! 39.Rc1 Qd3 (39...ef4!? 40.gf4 Qh3 41.Qg3 Qh5 42.Qg4 Qg4 43.Kg4 Kg8-/+) 40.Kg4 Qd7 (40...Qd7 41.Kf3 ef4 42.gf4 Qh3 43.Qg3 Qh5 44.Qg4 Qg4 45.Kg4 a4-/+) 0-1. bjoernsen (2360) - Kampozky (2335), Rated blitz game, lichess.org, 2021.

5.c4 d5 6.a4 b6 7.Nf3 c5 8.Be2 0-0 9.0-0 Bb7 10.d4 dc4 11.Bc4 Nbd7 12.Nbd2 Rc8 13.Be2 Qc7 14.Rc1 Qb8 15.h3 Qa8 16.Ne1 (16.Nc4 Rfd8=) 16...Rfd8 17.Bf3 cd4 18.Bd4 Nc5 (18...Rc1 19.Qc1 e5 20.Bb7 Qb7 21.Bb2=+) 19.Bb7 Qb7 20.Ndf3 Nfd7 21.Qc2? (21.Nd3 Bf6 22.Nc5 Nc5=) 21...e5 (better 21...Nb3! 22.Qb3 Rc1-+) 22.Ne5 (22.Bc5 A) 22...Nc5?! 23.Ne5 Nd3 24.Qc8 (24.N1d3? Rc2 25.Rc2 f6-+; worse 24.N5d3 Rc2 25.Rc2 Qe4=+) 24...Rc8 25.N1d3= (worse 25.N5d3 Rc1 26.Nc1 Qe4-+); B) 22...Rc5 23.Qb1 Rc1 24.Qc1 Bf6=+) 22...Ne5-/+ 23.Be5 Nd3 (23...Nb3 24.Qb3 Rc1 25.Bd4=+) 24.Qd3 (24.Qc8 Rc8 25.Nd3 Ba3 26.Rc8 Qc8+=) 24...Rd3 (better 24...Rc1!? 25.Bd4 Rdc8-/+) 25.Nd3+= f6 26.Bd4 Rd8 (26...Rc1 27.Rc1 (worse 27.Nc1 Qc7-+) 27...Qd5 28.Nf4=) 27.Nf4 (27.Rc6!?+/-) 27...Bd6+= 28.Ne6 (better 28.Ne2!?+=) 28...Re8=+ 29.Nf4 Bf4 30.ef4 Re4 31.Be3 h5 (31...Ra4 32.Rc6=+) 32.Rc6 Ra4 33.Rb6 Qd7 34.Rc6 (better 34.Rc1=) 34...Rb4-/+ 35.Rc5 (35.Rfc1 Rb5 36.Ra6 Qd3-/+) 35...Rb5-+ 36.Rfc1 (36.Rc4 Rd5-+) 36...Rc5 37.Rc5 a4 38.Rh5?? (better 38.Kh2-+) 38...Qd1 39.Kh2 Qh5 40.g4 (40.Bd4 a3 41.f3 Qd5-+) 40...Qf7 (40...Qd5 41.Bc1 Qf3 42.g5 Qf2 43.Kh1 Qf1 44.Kh2 Qc1 45.Kg3 Qe3 46.Kg4 fg5 47.Kg5 a3 48.h4 a2 49.Kg4 Qe2 50.Kg3 a1Q 51.h5 Qg1 52.Kh4 Qgg4) 41.Kg3 (41.Bc5 Qc4 42.Ba3 Qf4 43.Kg2 Kf7-+) 41...a3 (better 41...Qc4 42.f5-+) 42.Bd4 a2 (42...Qb3 43.Kh4 Qc4 44.Be5 fe5 45.Kg3 Qf4 46.Kg2 a2 47.Kg1 Qf3 48.h4 a1Q 49.Kh2 Qah1) 43.f5 (43.Kf3 Qd5 44.Ke3 Qd4 45.Kd4 a1Q 46.Ke3 Qc3 47.Ke2 Qh3-+) 43...Qc7 (better 43...Qb3 44.Kh4 Qd3-+) 44.f4 (44.Kf3-+) 44...Qc4 45.Ba1 Qd3 46.Kh4 Qb1 47.Bd4 (47.Bc3 Qg1 48.Kh5 Qe3 49.Bf6 a1Q 50.Be7 Qh3 51.Bh4 Qf6 52.g5 Qf3) 47...a1Q (47...Qe1 48.Kh5 Qg3 49.Bf2 Qh3 50.Bh4 Kh7 51.g5 Qf3) 48.Ba1 Qa1 (48...Qe1 49.Kh5 Kh7 50.Bd4 Qg3 51.h4 Qb3 52.Bf6 Qf7 53.Kg5 gf6) 49.Kh5 (49.Kg3-+) 49...Qe1 (49...Qf1 50.Kh4 Qf3 51.g5 Qf4 52.Kh5 Qg5) 50.h4 (50.g5 Qe2 51.Kh4 Qf3 52.gf6 Qf4 53.Kh5 gf6 54.h4 Qf5 55.Kh6 Qh7) 50…Qe8 0-1. BeepBeepImAJeep (2600) - DarkApollyon (2435), lichess.org, 2016.

5.g4 0-0 6.g5 d5?? 7.gf6+- Bf6 8.Bf6 Qf6 9.Nc3 d4 10.ed4 Qd4 11.Nf3 Qf6 12.Rg1 Qe7 13.Ne4 f5 14.Ng3 h6 (14...g6 15.h4 e5 16.Bc4 Kh8 17.Qb1+-) 15.Bc4 Nd7 16.d4 (16.Qe2 Kh8+-) 16...Nb6 17.Bb3 (17.Be2 Bd7+-) 17...Nd5?? (better 17...a4 18.h4 ab3 19.cb3 Kh7=) 18.Nh5 g5 19.Ne5 Nf4 (19...Bd7+-) 20.Nf4 Qd6 (20...Kh7 21.Qh5 Rg8 22.0-0-0+-) 21.Nfg6 (better 21.Qh5 Rf6 22.Rg5 Kh7+-) 21...Rf6 (21...Qb4 22.Kf1 Qb5 23.Bc4+-) 22.Qh5 Bd7 (22...Kh7 23.Rg5 Bd7+-) 23.Qh6 Be8 (23...Qe5 24.de5 Rg6 25.Qg6 Kf8 26.Qg5 Kf7 27.Qf6 Ke8 28.Rg8) 24.Rg5 (24.Qh8) 24...Bg6 (24...Qb4 25.Kf1 Qb5 26.Kg1 Qf1 27.Rf1 Bg6 28.Rg6 Rg6 29.Qg6 Kh8 30.Nf7) 25.Rg6 Rg6 26.Qg6 Kf8 (26...Kh8 27.Nf7) 27.Qf7 1-0. FeegLood (2870) - vovaches (2360), Rated Bullet tournament uCvEIn5Q, lichess.org, 2015.

4.a3 Bc5 5.Nf3 d5 6.e3 Bd7 7.Nc3+= Ng4 8.Bd3 a6 9.h3 Nf6 10.a4 Qe7 11.0-0 e5 12.e4+- de4 13.Ne4 Ne4 14.Be4 c6? 15.Ne5 cb5 16.Nd7 Nd7 17.Bg7 Rg8 18.Bb7 Rb8 19.Re1 Bf2 20.Kf2 Ne5 21.Re5 Rg7 22.Bc6 Kd8 23.Re7 Ke7 24.Qe2 Kf8 25.Re1 Rg6 26.Qe5 Re6 27.Qb8 (27.Qb8 Kg7 28.Re6 fe6 29.Qe8 b4 30.Qe6 h6 31.Qe7 Kg8 32.Bd5 Kh8 33.Qf7 b3 34.Qg8#) 1–0. pereira – lerving, internet, 2009.

4.c3 Bd6 5.a3 Bf4 (5...a6 6.c4+=) 6.e3= Bg5? (6...Bd6 7.Nf3=) 7.d4 (better is 7.h4 Bh6 8.g4+-) 7...Ne4= 8.Nd2 Nd2 9.Qd2 d5 10.c4 0-0 11.Bd3 f5 12.Qc2 c6 13.Nf3 Bd7 14.bc6 Nc6 (14...Bc6 15.0-0+=) 15.c5 (15.cd5 ed5 16.Qb3 Be6 17.Qb7 Na5+/–) 15...Qf6 16.0-0 Bh4 17.Nh4 Qh4 18.Bb5 (better is 18.Rab1!?+=) 18...Nd4+= 19.ed4 Bb5 20.Rfe1 Rf6 21.Bc3 (21.Qb3 Bc6=) 21...Qf4 (21...Rh6 22.h3–/+) 22.a4 Bc4 23.Qb2 Rb8 24.Qb4 Bd3 (24...Rh6 25.h3 Rg6 26.Re3+=) 25.Ra2 (25.Bd2 Qg4 26.f3 Qh4=) 25...b6 (25...Rg6 26.Kh1–/+) 26.cb6 Rb6 27.Qc5 Rf8 (27...Qb8 28.Raa1–/+) 28.Rb2+= Rfb8 (better is 28...Ra6+=) 29.Rb6+/– Rb6 30.Rd1 (30.Qc8 Kf7 31.Ba5 Ra6 32.Qd7 Kg6+/–) 30...Be2 (30...Qb8!?–/+) 31.Re1 Qe4 32.Qc8 Kf7 33.Qc7 Kf8 (better is 33...Kg6!?=) 34.Qa7+/– Rb1 35.Qa8?? (better is 35.Bb4! Kg8 36.Qa8 Kf7 37.Qf8 Kg6 38.Qe8 Kg5 39.h4 Kh4 40.Qe7 g5 41.Rb1 Qb1 42.Kh2+-) 35...Kf7= 36.Qa7 Kf6 37.Qc5 (37.Qc7 Re1 38.Be1 Bc4 (38...Qd4?? 39.Bc3 Qc3 40.Qc3 Kf7 41.Qc8+-) 39.Qd8 Kg6 40.Qe8 Kg5 41.Bd2 Kf6 42.Qd8 Kg6 43.Qg5 Kf7 44.Qh5 Ke7 45.Bb4 Kf6=) 37...f4 (37...Bh5!? 38.Qa5 Be8+=) 38.h3 Re1 39.Be1 f3 40.g3 (better is 40.Qf8 Kg6 41.Qe8 Kf6 42.Qd8 Kf7 43.Qd7 Kg6 44.Qe8 Kf6 45.Qf8 Kg6 46.Qe8=) 40...g5?? (better is 40...Bb5! 41.Qb5 Qe1 42.Qf1 Qc3+=) 41.Kh2 (better is 41.Qf8 Kg6 42.Qg8 Kh6 43.Bd2 Qb1 44.Kh2+-) 41...h5? (better is 41...Kg6+=) 42.Qf8+- Kg6 43.Qg8 Kf6 44.Qh8 (better is 44.Bb4 Bb5 A) 45.ab5 Qe2 46.Qf8 Kg6 47.Qe8 Kf6 48.Be7 Kf5 49.Qf7 Ke4 50.Qe6 Kd3 51.Qe2 fe2+- (51...Ke2?? 52.b6+-); B) 45.Ba5+-) 44...Kg6?? (44...Kf7 45.Bb4 Bb5 46.Qh5 Kg7 47.Qg5 Kh7 48.Qe7 Kg6 49.ab5 Qe2 50.Qe8 Kh7 51.Qh5 Kg8 52.Qg6 Kh8 53.Qh6 Kg8+-) 45.Qe5 (better is 45.Bb4 Qf5 46.Qg8 Kf6 47.Bf8+-) 45...Qe5–/+ 46.de5 d4 (better is 46...Kf5!? 47.Bd2 g4–/+) 47.g4= h4 48.Bb4 Bc4 49.Kg1 Be2 (49...Kg7!?+=) 50.Bc5+/– d3 51.Be3 Kh6 52.Kh1 Bf1 53.Kh2 Bg2?? (better is 53...d2 54.Bd2 Bc4+/–) 54.Bd2+- Kg6 55.Bc3 (better is 55.a5 Kf7 56.a6+-) 55...Kh7?? (better is 55...Bf1+/–) 56.a5+- Kh6 (56...d2 57.Bd2 Bf1 58.Bg5 Kg7+-) 57.a6 Kg6 58.a7 d2 59.Bd2 Kh7 (59...Kh6 60.a8Q Kg7 61.Bg5 Kf7 62.Qb7 Kf8 63.Qe7 Kg8 64.Bf6 Bh3 65.Qg7) 1–0. Bonetti,Shane – Sigma 4, 2000.

4.e3 a5 5.a3 Bc5 6.d4 Bb6 (6...Be7 7.Nf3+=) 7.Nf3+- Ne4 8.c4 d6 9.Bd3 Nf2?? (better 9...f5+-) 10.Kf2+- 0-0 11.Re1 e5 (11...Nd7 12.Kg1+-) 12.Kg1 ed4 13.ed4 Qf6 (13...Nd7 14.Nc3+-) 14.Qc2 Bg4 (14...h6 15.Nc3 Nd7 16.Nd5+-) 15.c5 Bf3 (15...Ba7 16.Nbd2 g6 17.Be4+-) 16.cb6 cb6 (16...Qh4 17.g3 Qh6 18.bc7+-) 17.Bh7 Kh8 18.Rf1 (18.Rf1 Qh4 19.Rf3 Qe1 20.Rf1 Qe3 21.Kh1+-) 1–0. GuestNFGT – GuestNGJT, freechess.org, 2019.

4.e3 c6 5.f4 (5.a3 Be7=) 5...c5 (5...a6 6.a3 Be7 7.bc6 Nc6 8.Nf3+=) 6.Nf3= d6 7.Be2 Nbd7 (7...0-0 8.a3 Ba5 9.0-0=) 8.0-0 d5 9.c4 0-0 10.Qc2 Ne4 (10...a6 11.a3 Ba5 12.ba6=) 11.a3 Ba5 12.d4 (12.Nc3 Bc3 13.Bc3 Nc3 14.Qc3 a6=) 12...cd4 (12...a6 13.Nbd2 Nd2 14.Nd2=) 13.Nd4 (13.Bd4 Qc7=) 13...Ndc5 14.Bf3 Qh4 (14...a6 15.Nc3 Bc3 16.Bc3+=) 15.a4 Bc7?? (better is 15...Bd7=) 16.cd5+- e5 (16...ed5 17.Be4 Bf4 18.Bh7 (18.Rf4?! Qe1 19.Rf1 Qe3 20.Kh1 Ne4+-; 18.Qc5?? Bh2 19.Kh1 Bg3 20.Kg1 Qh2) 18...Qh7 19.Qh7 (19.Rf4?! Qc2 20.Nc2 Nd3+-; 19.Qc5 Qh2 20.Kf2 Qg3 21.Ke2 Qe3 22.Kd1 Qd3 23.Ke1 Re8 24.Qe7 Re7 25.Ne6 Re6 26.Be5 Re5 27.Kf2 Qe3) 19...Kh7 20.Rf4+-) 17.Be4 ed4 18.Qc5 Bb6 19.Qc2 de3 Threatening mate... how? 20.Kh1 Bg4 21.Nc3 f5 22.Bf3 Rf6 (22...Rfe8 23.Rad1+-) 23.Bg4 fg4 24.g3 Qh3 (24...Qh5 25.Ne4 Rf7 26.a5+-) 25.Ne4 Rh6 26.d6 (26.f5 Bd8+-) 26...Rf8 (26...Re8 27.Ng5 Qh5 28.d7+-) 27.Rac1 (27.a5 Bd8+-) 27...Qh5 (27...Re8 28.Ng5 Qh2 29.Qh2 Rh2 30.Kh2+-) 28.Be5 (28.f5 Rf7+-) 28...Ba5 (28...Qf5 29.Ng5+-) 29.Ng5 Bd2 (29...Kh8 30.Qb2 Qg6+-) 30.Qb3 (30.Qb3 Re6 31.Qe6 Qf7 32.Nf7 e2 33.Nh6 Kh8 34.Qg8 Rg8 35.Nf7) 1–0. Nilsson,Nils Roland – Hjelte,Nils, corr SSKK 2–756, 1992.

4.e3= d6 5.a3 Ba5 6.Nf3=.

4.e4 A) worse is 4...Ne4 5.Qg4+/– (5.Bg7?! Rg8 6.Bd4 d5=); B) 4...d6=.

5.Nc3 0-0 6.g3 c6 7.Bg2 d5 8.e3 Bd7 9.a4 Qc7 10.Nf3 Bc3 11.Bc3= Ne4 12.Bb4 c5 13.Ba3 Qa5 14.Bb2 Bb5? 15.ab5+- Qb5 16.Ba3 Nc6+/– 17.Bf1 Qb6 18.c3 a6 19.Be2 Qc7 20.0-0 b6 21.Qc2 Nd6 22.Bd3 h6 23.Bh7 Kh8+= 24.Bd3 Rfe8 25.Rfb1+/– c4 26.Bd6 Qd6 27.Be2 b5 28.Nd4 Ne7 29.Ra5 e5+= 30.Nf5 Nf5 31.Qf5+/– g6 32.Qh3 Kg7 33.Rba1 Ra7 34.Rb5!+- ab5 35.Ra7 Rd8 36.Bg4 h5? 37.Be2 b4 38.cb4 Qb4 39.g4 Qd2 40.Qf3 Rf8 41.gh5 c3?? 42.hg6 c2 43.Rf7 Kg6 44.Qf6# (44.Qh5#) 1–0. mic (2120) – jjefferson (2120), net–chess.com, 2008.

5.c4 0-0 6.Qa4 Bb6 7.e3= d6 8.d4 Bd7 9.Nd2 c6 10.Bd3 d5 11.cd5 cb5 12.Bb5 Bb5 13.Qb5 a6 14.Qb3 Qd5 15.Qd5 Nd5 16.Rc1 Nd7 17.Ne2 Ba5 18.e4+= Bd2 19.Kd2 N5f6 20.f3 b5 21.Rc7 Nb6= 22.Rb1 Rac8 23.Rb7 Nc4 24.Ke1 Rb8 25.Ra7 b4 26.a4 Rb6 27.Rc7 Nb2 28.Rb2 b3 29.Rc3 Rfb8 30.Nc1 g6 31.Rcb3 Rb3+/– 32.Rb3 Rc8 33.Ne2 Rc4+/– 34.a5 Ra4 35.Rb6 Ra5+= 36.d5 Nd7 37.Rb7 Nc5 38.Rb8 Kg7 39.d6 Ra2 40.Kf2+= Rd2 41.Rb6 e5 42.h3 Rc2 43.Ke3 f5 44.g4 f4= 45.Nf4 Rc3 46.Kd2 ef4 47.Kc3 Na4 48.Kc4 Nb6 49.Kc5 Nd7 50.Kc6 Nf8 51.d7 Ne6 52.h4 Kf7 53.Kd6 a5 54.Kd5 a4 55.Kc4 Ke7 56.Kb4 Nd4 57.Ka4 Nf3 58.Kb4 Ng1 59.Kc5 f3 60.Kc6 Kd8 61.h5 f2 62.hg6 hg6 63.e5 f1Q 64.Kd6 Qd1 65.Kc5 Kd7 66.g5 Ne2 67.Kb5 Qb3 68.Kc5 Nf4 69.Kd4 Ne6 70.Ke4 Qg3 71.Kd5 Qd3# 0–1. Caissa – adro, internet, 2001.

5.c4 0-0 6.Qa4 c5+=.

5.c4 0-0 6.Nf3 c6 (6...a6 7.e3+=) 7.e3= d5 (7...cb5 8.cb5 d6 9.Be2=) 8.Qc2 Re8 (8...a6 9.Ng5 g6 10.bc6 Nc6 11.Nf3=) 9.Be2 (9.Bd3 dc4 10.Bc4 cb5 11.Bb5 Nbd7=) 9...Nbd7 (9...Bd7 10.Ne5=) 10.0-0 e5 (10...cb5 11.cb5 e5 12.Rc1=) 11.Nc3 (11.cd5 cd5 12.Rc1 e4=) 11...Bc7 (11...dc4 12.bc6 Nb6 13.cb7 Bb7 14.Rfd1=) 12.bc6 (12.Rfc1 dc4 13.Bc4 Nb6+=) 12...bc6 13.cd5 (13.Rfc1 a6=) 13...cd5 14.Nb5 Bb6 (14...Bb8!?+=) 15.Nd6+/– Re6 16.Qc6?? (better is 16.Nf7 Qe8 17.N3g5+/–) 16...Rb8–/+ 17.Rac1 Ne8 (17...Nc5!? 18.Be5 Bd7 19.Nf7 Qf8 (worse is 19...Bc6 20.Nd8 Rd8 21.Nd4 Re5 22.Nc6+/–; 19...Rc6?! 20.Nd8 Rd8 21.d4+=) 20.Qe6 Be6 21.Bb8 Bf7+=) 18.Qc8= Rc8 (18...Nd6 19.Qc2=) 19.Rc8+= Rd6 (19...Nd6!? 20.Rd8 Bd8+=) 20.Rd8+/– Bd8 21.Ne5 Bf6 (21...Rb6 22.Ba1 Ne5 23.Be5+/–) 22.d4 (22.f4 Re6 23.Bg4 Re7+-) 22...Be5 (22...Be7 23.Nd7 Rd7 24.Rc1+/–) 23.de5 Rb6 24.Bd4 (24.Bd4 Rb7 25.Rc1+-) 1–0. Schirmer,Michael – Kurzynsky,M, corr, 1985.

5.c4 d5 6.e3 0-0 7.Qf3=.

5.c4 d5 6.e3 0-0 7.Nf3 Nbd7 8.a4 Nc5 9.Be2 b6 10.0-0 Bb7 11.d4 Nce4 12.Nfd2 c5 13.Ne4 Ne4 14.f3 Nf6 15.Bc3 Bc3 16.Nc3 cd4 17.Qd4 Re8 18.c5 e5 19.Qb4 bc5 20.Qc5 d4 21.Rfd1 dc3 22.Rd8 Red8 23.Qc3 e4 24.Rd1 Rd1 25.Bd1 Nd5 26.Qd4 a6 27.Be2 ab5 28.Bb5 ef3 29.gf3 Nc7 30.Qd7 Rc8 31.a5 Nb5 32.Qb7 Nd6 33.Qd7 1–0. Trokenheim – Gibbs, itsyourturn.com, 2000.

5.c4 d5 6.e3 c5 (6...0-0 7.Qf3=) 7.Nf3= 0-0 8.Be2 (8.Qc2 Nbd7=) 8...Nbd7 (8...a6 9.Qc2=) 9.0-0 b6 (9...a6 10.ba6 ba6 11.Nc3=) 10.d4 Bb7 11.Nbd2 (11.Bc3 Bc3 12.Nc3 dc4 13.dc5 Nc5 14.Bc4 a6=) 11...Bd2 (11...a6 12.ba6 Ba6 13.Rc1=) 12.Nd2 Rc8 (12...cd4 13.Bd4 e5 14.Bb2=) 13.Rc1 Ne4 (13...cd4!? 14.Bd4 e5=) 14.Ne4+/– de4 15.Qc2 (15.Qa4 Ra8+/–) 15...Qg5 16.Rfd1 (16.Qa4 Ra8+=) 16...Rfd8 17.Qa4 Rc7 (17...cd4!? 18.Bd4 Ra8=) 18.dc5+/– (18.Qa7? Ra8 19.Qa8 Ba8 20.dc5 Nc5–+) 18...Qc5 White gets strong play along the open d–file 19.Rd2 (19.Qa7 Ra8 20.Bd4 Qe7 (20...Ra7? 21.Bc5 h6 22.Be7+-) 21.Bb6 Ra7 22.Bc7 Qa3–/+ (22...Ra3?? 23.Bd6 Qg5 24.Ba3+-)) 19...Rdc8 (19...Ba8 20.Rcd1+/–) 20.Rcd1+/– White launches an attack (20.Qa7 Ra8 21.Bd4 A) 21...Ra7? 22.Bc5 Bd5 23.Bd6+- (23.cd5?! Rc5 24.Rc5 Nc5+/–); B) 21...Qe7 22.Bb6 Ra7 23.Bc7 B1) 23...Ra3? 24.Bd6 Ra2 25.Be7 (25.Ra2?! Qd6 26.Rd1 Qc7=) 25...Rd2 26.Kf1+-; B2) 23...Qa3–+) 20...Qe7 (20...Rd8 21.h3+/–) 21.Qb4 Qb4 22.ab4 Nf8 23.Be5 Re7 (23...Rc4 24.Bc4 Rc4 25.Rd8+-) 24.Bd6 Rd7 25.Bf8 Rd2 26.Rd2 Kf8 27.Rd7 Rb8 28.c5 bc5 (28...Bd5 29.Ra7 Ra8 30.Ra8 Ba8 31.c6+-) 29.bc5 Ke8 (29...Bd5 30.Ra7 Rc8 31.c6 Bc6 32.bc6 Rc6 33.f3+-) 30.c6 Bc6 31.bc6 Rb6 (31...Rb1 32.Bf1+-) 32.Ra7 Rb1 33.Bf1 Rc1 34.g3 Kf8 35.c7 (35.Rc7 g6+-) 35...Ke8 36.Kg2 Kd7 37.c8Q Kc8 38.Rf7 (38.Rf7 Rc7 39.Rf4+-) 1–0. Poschmann,Hans – Hohl,L, corr ICCF, 1997.

5.c4 d6 6.Qa4 Bb6 7.d4=.

5.e3 0-0 6.Nf3 d5 7.c4 c5 8.Be2 a6 9.a4 (9.Qc2 b6=) 9...Bd7 (9...dc4 10.0-0=) 10.0-0 ab5 (10...dc4 11.Bc4 Bb4 12.Qc2+=) 11.ab5+= b6 (11...dc4 12.Bc4 Ne4 13.Be5+=) 12.d3 (12.d4 Bc8+=) 12...Be8 (12...Bc8 13.Ne5+=) 13.Ne5 (13.Qc2 Nbd7+/–) 13...Nfd7+= 14.Nf3 f6 (14...Nf6!?=) 15.Nbd2+= Bg6 (15...Bf7 16.cd5 ed5 17.Nb3+=) 16.cd5 (16.Nb3 dc4 17.dc4 Qc7+/–) 16...ed5+= 17.Nh4 (17.Nb3 Re8+/–) 17...Bf7 18.Ndf3 (18.Nb3 Re8+=) 18...Bh5 (18...Be6 19.Nd2=) 19.Nf5+= Bf3? (better is 19...Bg4 20.N3h4 Be2 21.Qe2 Ra7+/–) 20.Bf3+- (20.gf3?! Qe8=) 20...Ne5?? (20...Ra7 21.Bd5 Kh8+-) 21.Bd5! Kh8 (21...Qd5 22.Ne7 Double attack (22.Ne7 Decoy)) 1–0. DEFFM – GuestMKZZ, freechess.org, 2016.

5.e3 a6 6.a4 (6.ba6 Na6 7.Qf3 Nc5=) 6...c6 (6...d6 7.Nf3=) 7.c4 (7.Nf3 0-0=) 7...h6 (7...d6 8.Nc3+=) 8.Nf3= d6 (8...0-0 9.Be2=) 9.Be2 Nbd7 (9...0-0 10.0-0=) 10.0-0 0-0 (10...e5 11.Nc3=) 11.Qc2 (11.d4 c5=) 11...e5 (11...Qc7 12.Nc3=) 12.d4 e4 13.Nfd2 d5 (13...Re8 14.Nc3 d5 15.Rfc1+=) 14.Nc3 Bc7 (14...Qc7 15.cd5 cd5 16.Rfc1+=) 15.Ba3 (15.bc6 bc6 16.Ba3 Re8+=) 15...Re8 16.Rfc1 (16.Rfb1 Re6+=) 16...Nf8 (16...Bb8 17.cd5 cd5 18.Qb3+=) 17.bc6 (17.cd5 cd5 18.Nce4 Ne4 19.Ne4 Bh2 20.Kh2 de4+=) 17...bc6 18.cd5 cd5 19.Nce4 Bh2 20.Kh2 Ne4 21.Ne4 Qh4 22.Kg1 Qe4 (22...de4 23.Rab1+=) 23.Qe4+/– de4 24.a5 Nd7 (24...Rd8 25.Rab1+/–) 25.Rc6 Nf6 26.Rac1 Bb7 27.Rb6 Bc8 28.Bc4 Nd7 (28...Ra7 29.Kf1+/–) 29.Rc6 Nb8?? (better is 29...Nf6+/–) 30.Rc8!+- Nd7 (30...Rc8 31.Bf7 Double attack) 31.Re8 (31.Rc7 Rad8+-) 31...Re8 32.Ba6 Nf6 (32...g5 33.Bb7 Kg7 34.Rc8 Rc8 35.Bc8+-) 33.Bb7 Kh7 (33...Nd7 34.a6 Nb6 35.a7+-) 34.a6 Nd7 35.Bc6 Rd8 1–0. DEFFM – amplitude, freechess.org, 2018.

5.Nf3 d6=.

5.e4=.

5.Nf3 0-0 6.e3 c6 7.Be2 cb5 8.Bb5 a6 9.Bd3 Nc6 10.0-0 d5 11.Ne5 Ne5 12.Be5 Nd7 13.Bb2 Bf6 14.Bf6 Nf6 15.f4 Re8 16.Nc3 Nd7 17.Qh5 g6 18.Qh6 Qf6 19.Rab1 Nc5 20.Rf3 Nd3 21.cd3 Bd7 22.Rb7+/– Bc6 23.Rc7 Rac8+= 24.Rc8 Rc8 25.d4 Bd7 26.f5!+/– ef5 27.Nd5 Qg7? 28.Ne7+- Kh8 29.Qg7 Kg7 30.Nc8 Bc8 31.Rf1 Bd7 32.Rc1 h5 33.d3 Kf6 34.Kf2 Ke6 35.e4 f4 36.Rc5 Kd6 37.Kf3 f5 38.Kf4 fe4 39.de4 Ke6 40.Kg5 Kf7 41.Rc7 Ke6 42.Rd7! Kd7 43.h4 Ke6 44.Kg6 Kd6 45.Kh5 1–0. b4_player – opponent, gamecolony.com, 2007.

5.Nf3 0-0 6.e3 c6 7.Be2 cb5 8.Bb5 Qb6 9.Nc3 a6 10.Bd3 Nc6 11.0-0 d5 12.Qb1 e5 13.e4= de4 14.Ne4 Nd7 15.Re1 f5 16.Qa2 Kh8 17.Neg5 e4? 18.Rab1+- Bg5 19.Ng5 Nd4 20.Nf7 Rf7 21.Qf7 Qe6 22.Qe6 Ne6 23.Bc4 Ndc5 24.d4 ed3 25.cd3 b5 26.Bd5 Rb8 27.d4 Ne4 28.f3 Nd2 29.Rbc1 Nc4 30.Bc4 bc4 31.d5 Nf8 32.Re8 Kg8 33.Rc4 Rb2 34.Rcc8 g6 35.Rf8 Kg7 36.d6 Rb1 37.Kf2 Rb2 38.Ke3 Rb3 39.Kd4 Rb1 40.Rfe8 Rb2 41.Re7 (41.Re7 Kf6 42.Rf8 Kg5 43.Rh7 Rb3 44.d7 Rd3 45.Kd3 Kf4 46.Kd4 g5 47.d8N g4 48.Ne6#) 1–0. b4_player – opponent, gamecolony.com, 2007.

5.Qf3 d5=.

5.Nf3 b6 6.Be2 Bb7 7.0-0 c6 8.a4 d6 9.c4 e5 10.d4 Ne4 11.de5 de5 12.Ne5 cb5 13.ab5 Qg5 14.Nf3 Qg4 15.h3 Qg6 16.Ne5 Qg5 17.Nc6 Nc6 18.bc6 Bc6 19.Bf3 Rac8 20.Ra7 Ba5 21.Qd4 Nc5 22.Bc6 Rc6 23.h4 Qg6 24.h5 Qh6 25.g4 Ne6 26.Qd5 Rc5 27.Qg2 Rc4 28.Na3 Rb4 29.Ba1 Ng5 30.Nc2 Rc4 31.Nd4 Rfc8 32.Nf5 Qf6 33.Bf6 gf6 34.Ne7 Kf8 35.Nc8 Rc8 36.Qb7 Re8 37.f4 Ne4 38.Qf7 1–0. Orang4Utan (1715) – aalvinx (1715), lichess.org, 2018.

5.Nf3 d5 6.Be2 a6 7.0-0=.

5.Nf3 d5 6.Be2 c5 7.bc6 (7.a3 Ba5=) 7...Nc6+= 8.0-0 Bd6 9.d4 Qc7 (9...a6 10.Ba3+=) 10.c4 (10.Ba3 Nb4=) 10...dc4 (10...Ng4 11.h3 Nh2 12.Nh2 Bh2 13.Kh1=) 11.Bc4= Bd7 (11...Rd8 12.Qe2+=) 12.Nc3 (12.Na3 Ng4 13.h3 Nh2=) 12...Ng4 The pressure on h2 grows (12...Na5 13.Bd3=) 13.g3 h5 (13...Na5!? 14.Nb5 Bb5 15.Bb5 Nc4=) 14.Nb5+= Qb8 15.Nd6 (15.Rc1 Rc8+=) 15...Qd6 16.d5 (16.Rc1 Rfc8+=) 16...ed5 17.Bd5 (17.Qd5 Qd5 18.Bd5 Be6+=) 17...h4?? (better is 17...Be6 18.Be4 Rfd8=) 18.Bf7!!+- (18.Bf7 Rf7 19.Qd6 hg3 20.Qg3+-) 1–0. Friberger,Torbjoern – Blain,Jean Baptiste, corr FRA–SWE team m, 1994.

5.Nf3 d5 6.Be2 Bd7 7.0-0 (7.Nc3 Be8=) 7...c6 (7...a6 8.a4=) 8.a4+= cb5 9.ab5 Ne4 (9...Be8!?+=) 10.d3+- Nd6 11.c3 (11.c4 a5+-) 11...Bc5 12.c4 dc4 13.dc4 Qb6 (13...Be8!?+-) 14.Qc2+- a6 (14...Rd8 15.Rd1+-) 15.Bd3 g6 16.Ne5 (16.Nc3 Qd8+-) 16...f6 (16...Qd8 17.Nd2 Qe7 18.Nb3+-) 17.Bg6 (17.Nd7?! Nd7 18.Nc3 Qc7+=) 17...f5 (17...fe5 18.Bh7 Kf7 19.Qg6 (19.Be5?! Ke7+-) 19...Ke7 A) 20.Be5?! Kd8+- (20...Nc4?? 21.Qg5 Ke8 22.Bg6 Rf7 23.Nc3+-); B) 20.Qg5 Ke8 21.Bg6 Nf7 22.Be5+-) 18.Nd2 (better 18.Bh5 Be8 19.Bf3+-) 18...Be8?? (18...hg6 19.Qc3 Rf6+-) 19.Qc3 Bg6 (19...hg6 20.Nef3 Bd4 21.Nd4 e5+-) 20.Ng6 Rf7 (20...Bd4 21.ed4 Rf6+-) 21.Qh8 1–0. GuestKLQS – GuestQZPJ, freechess.org, 2020.

4.a4 a5 5.Nf3= b6 6.e3 Bb7 7.Be2 Bd6 8.0-0 0-0 9.d3 Re8 10.Nbd2 e5 11.Nc4+/– Qc7 12.e4 h6 13.Re1 g5 14.Qd2 Kh7 15.Qc3 g4?! 16.Nd6 gf3 17.Ne8 Ne8 18.Bf3 d6 19.Bg4 Bc8 20.Bc8 Qc8 21.f4 f6 22.Rf1 Qd7 23.Rf3 Ng7 24.Raf1 Ne8 25.fe5 de5 26.Qc4 Qe7 27.Be5! Qe5 28.Qf7 Kh8 29.Rh3 (29.Rh3 Qg5 30.Qe8 Kg7 31.Qe7 Kg6 32.Rg3+-) 1–0. Trkn – guest6935, ICC, 2005.

4.a4 a6 5.e3 ab5 6.c4? bc4–/+ 7.Bc4 d5 8.Be2 Be7 9.Nf3 0-0 10.0-0 Nfd7 (10...Nc6 11.Bb5–/+) 11.d4 Bf6 12.Nc3 cd4 13.Nd4 Nc6 14.Ncb5 Nd4 15.Bd4 Bd4 16.Qd4 Nf6 17.Rfc1 Bd7 18.Qb4 White prepares the advance a5 18...Bc6 (18...Qa5 19.Qb2=+) 19.Nd4= Qd7 20.a5 e5 (20...Rfc8 21.Bd3=+) 21.Nb3 (21.Nc6!? bc6 22.Qc3=) 21...Ne4 22.Bd3 Nd6 23.a6 (23.Qh4 e4 24.Be2 Bb5 25.Bb5 Qb5=+) 23...e4 (23...ba6 24.Qh4 f5 25.Nc5–/+) 24.Be2 ba6 25.Nc5 Qe7 26.Na6 (better 26.Ne4 Nf5 27.Qd2=) 26...Bb5?? (better 26...Rfc8–/+) 27.Bb5+- Nb5 (27...Rac8 28.Bc6 Qe5+-) 28.Qe7 Na7 (28...Rad8 29.Qc5 Nd6 30.Qd5+-) 29.Nc7 (better 29.Nb4 d4 30.ed4+-) 29...Rae8 30.Ne8 Re8 (30...Nc6 31.Rc6 h6 32.Ra8 h5 33.Qf8 Kf8 34.Nf6 Ke7 35.Re8) 31.Qe8 1–0. BeepBeepImAJeep (2585) – spartasoldier (2025), lichess.org, 2017.

4.a4 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.a4 e6 4.b5 c5).

4.a4 d5 5.e3 Nbd7 6.Nf3 Bd6 7.c4 0-0 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

4.a4 Be7 5.e3 0-0 6.c4 d6 7.Nf3= a6 8.Nc3 a5 (8...e5 9.Be2=) 9.Qb3 b6 10.0-0-0 (10.Be2 Bb7=) 10...Bb7 (10...Ng4!? 11.Rg1 Nf2-/+) 11.Be2 Qc7 12.Kb1 Nbd7 13.d3 Ne5 (13...d5=+) 14.Ne4? (better 14.Ne5!? de5 15.Bf3=) 14...Ne4-/+ 15.de4 Be4 16.Ka1 Bf6 17.h3 Nd7 18.Bd3 Bd3 (18...Bb2!? 19.Qb2 Nf6-/+) 19.Qd3=+ Rad8 (19...Be7!?=+) 20.Qd6= Bb2 21.Kb2 Qb7 22.Rd2 h6 23.Rhd1 Qe4 (23...Nf6 24.Qd8 Rd8 25.Rd8 Kh7 26.Kb3+/-) 24.Kb3 (better 24.Qf4!? Qb7 25.Ne5 Ne5 26.Rd8+-) 24...Nf6+/- 25.Qd8 Rd8 26.Rd8 Kh7 27.R8d6 (27.Rf8 Qf5 28.Rf7 Qg6=) 27...Qg6+= 28.Rg1 (28.g4 Ne4 29.Ne5 Qf6-/+) 28...Ne8 (28...Ne4 29.Rd7-/+) 29.Rb6 (29.Rd2!?+=) 29...Qd3= 30.Kb2 Qc4 31.Rb8 (better 31.Rd1!?=) 31...Qb4 32.Kc1 Nd6 33.Nd2? (33.Re1 Qc3 34.Kd1 Ne4-+) 33...c4 (better 33...Qc3 34.Kd1 Qa1 35.Ke2 Qg1-+) 34.b6?? (34.Nb1-+) 34...c3 35.Nb1 (35.Kd1 cd2 36.Ke2 Qc4 37.Kf3 Qa4 38.g4-+) 35...Qb2 36.Kd1 c2 37.Ke2 cb1Q 38.Kf3 Qf5 (38...Qg1 39.Rh8 Kh8 40.h4 Qgf2 41.Kg4 Qg2 42.Kf4 e5) 39.Kg3 Qbe5 (39...Qbf2 40.Kh2 Qe5 41.Kh1 Qfg3 42.Rh8 Kh8 43.Rb1 Qh2) 40.Kh4 (40.f4 Qe3 41.Kh2 Qff4 42.Kh1 Qeg3 43.Rh8 Kh8 44.Rb1 Qh2) 40…Qg5 0-1. ClayPigeons (2210) - erwanduveau (2175), Rated Blitz game, lichess.org, 2020.

4.c4 Qc7 5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bd6 (8...Be7 9.Nf3=) 9.Nf3 (9.Bf6 gf6 10.Nf3 b6+=) 9...h6 10.h3 e5 11.Be2 Ne4 (11...0-0 12.d3+=) 12.d3 Qa5 13.Nbd2 Nd2 14.Nd2 0-0 15.0-0 f5 16.Nf3 Qc7 17.e4 f4 (17...b6 18.Nh4 f4 19.Bg4+/–) 18.Nh4 (18.Qb3+/–) 18...Be7? (better is 18...Rf6!?+/–) 19.Ng6+- d6 (19...Rf7 20.Be5 Bd6 21.Bc3+-) 20.Nf8 Bf8 21.Bg4 b6 22.g3 g5 23.gf4 gf4 24.Kh2 Nd7 (24...Bg7 25.Rg1 Bd7 26.Bc3+-) 25.Be6 Kh7 (25...Kh8 26.Qh5 Nb8 27.Bc8 Qc8+-) 26.Qg4 Nf6 27.Qf5 (27.Qf5 Kh8 28.Bc8+-) 1–0. GuestHDDH – GuestYXCK, freechess.org, 2017.

4.c4 g6 5.Nf3 b6 6.e3 Bb7 7.Be2 Bg7 8.0-0 0-0 9.d3 d6 10.Nbd2 Nbd7 11.a4 a5 12.Qc2 Qe7 13.Bc3 Ne8 14.Rad1 Bc3 15.Qc3 Qf6 16.Qf6 Nef6 17.h3 Rad8 18.Ng5 h6 19.Ngf3 e5 20.Nh2 Rfe8 21.Ng4 Kg7 22.Nf6 Nf6 23.e4 Nh7 24.f4 f6 (24...ef4 25.Rf4 f5 26.Rdf1=+) 25.Rf2 (25.f5 gf5 26.Rf5 Bc8=) 25...Nf8 (25...ef4 26.Rf4 f5 27.Rdf1=+) 26.Rdf1 Nd7 (26...Re7 27.f5=) 27.Bg4 (27.f5 Nf8+=) 27...Rf8 28.Bd7 Rd7 29.h4 (29.f5 gf5 30.Rf5 Bc8=) 29...Bc8 30.Rf3 Rdd8 31.Nb3 Bg4 32.R3f2 (32.Rg3 f5 33.ef5 gf5 34.Nd2=+) 32...Bc8 (32...ef4!? 33.Rf4 Be2-/+) 33.Nc1 (33.Rf3 f5=+) 33...Bb7 (33...f5 34.ef5 Bf5 35.Re2-/+) 34.fe5 (34.f5!?=) 34...de5=+ 35.Rd2? (35.g4 Bc8 36.Rg2 Rd6=+) 35...Rd6 (better 35...Be4!? 36.Rfd1 Bf5 37.Ne2-+) 36.Rff2 (36.Re1 h5-/+) 36...f5 37.ef5 gf5 38.g3 (38.Rde2 e4 39.de4 Be4-/+) 38...Rg6-+ 39.Kh2 Rgf6 (39...Rg4!? 40.Rd1-+) 40.Rd1 h5 ½-½. Hoefer,Helmut (1620) - Hoeblich,Markus, 10th Rheinland-Pfalz Open, 2018.

4.d4 Qa5 5.Nc3=+.

4.d4 d5 5.Nf3 Qa5 6.Bc3 Qb5 7.e4 cd4?? 8.Bb5+- (8...Bd7 9.Bd7 Nbd7 10.Bd4 de4 11.Ne5+-) 1–0. abt – mels01, Caissa.com, 2004.

4.e3 Qb6 5.c4 d6 6.a4 a6 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 Nbd7 10.Be2 Be7 11.0-0 0-0 12.Nc3 Ne5 13.d4 Nf3 14.Bf3 cd4 15.ed4 d5 16.c5 Qc7 17.Re1 Bd7 18.Bb2 Ra8 19.Bd5 ed5 20.Re7 h5 21.g3 Qd8 22.Re5 Ng4 23.Rd5 Qf6 24.Qd2 Be6 25.Rh5 Ra5 26.d5 Bf5 27.d6 Bg6 28.Nd5 Qe6 29.Ne7 Kf8 30.Rh8 1–0. Orang4Utan (1675) – Hawkeye_809 (1710), lichess.org, 2017.

4.e3 Qc7 5.c4 a6 6.a4 ab5 (6...Be7 7.Nf3=) 7.ab5 Ra1 8.Ba1 Bd6 (8...Be7 9.Nf3=) 9.Nf3 (9.Bf6 gf6 10.Nc3 b6+= (10...Bh2? 11.b6 Qd6 12.Nb5 Qb6 13.Rh2+-)) 9...Be7= 10.d4 d5 (10...cd4 11.Bd4 d6 12.Be2=) 11.Nbd2 (11.cd5 Nd5 12.dc5 f6+=) 11...Nbd7 (11...0-0 12.cd5 Nd5 13.Bd3=) 12.Bd3 (12.cd5 Nd5 13.e4 Nb4=) 12...Nb6 (12...cd4 13.ed4 dc4 14.Nc4 Bb4 15.Nfd2=) 13.Qc2 Bd7 14.dc5 Bc5 15.Be5 Qc8 16.0-0 Ng4 (better 16...dc4!? 17.Nc4 Bb5 18.Nb6 Bd3 19.Qa4 Qc6 20.Qa8 Ke7 21.Qh8 Bf1 22.Nc8 Kd7 23.Qg7 Ne8 24.Qf7 Kd8+-) 17.Bg7+- Rg8 18.Qc3 (better 18.Bd4 Bd4 19.ed4 dc4 20.Nc4 Nc4 21.Bc4+-) 18...Bf8? (better 18...f6 19.Bf6 dc4 20.Bh7 Nd5+-) 19.Bd4+- Na4 (19...e5 20.Bb6 (20.Ne5?! Ne5 21.Be5 Bh3+-) 20...e4 21.Ne4 de4 22.Be4+-) 20.Qa1 Nc5 (20...e5 21.Be5 (21.Qa4?! ed4 22.ed4 Bd6+-; worse 21.Ne5 Ne5 22.Be5 Nc5 23.Bh7 Rg5+-) 21...f6 22.Bd4+- (22.cd5?! Nc5 23.Rc1 Nf2+-)) 21.Bh7 (21.Bh7 Nh6 22.cd5 ed5 23.Bg8 Ng8 24.Bc5 Qc5 25.Rc1+-) 1–0. DEFFM – GuestRRLX, freechess.org, 2020.

4.e3 d6 5.c4 Be7 6.a4 0-0 7.Nf3 d5 8.d4 Ne4 9.Nbd2 f5 (9...Qa5 10.Bd3=) 10.Ne4 (10.dc5!? Nc5 11.cd5 Qd5 12.Bd4+=) 10...fe4=+ 11.Ne5 Bh4 (11...Nd7 12.Bc3=+) 12.g3= Bg5 (12...Bf6!?=) 13.dc5+= Nd7 14.Be2 (14.Nd7 Qd7 15.cd5 ed5+=) 14...Nc5 (14...Qf6 15.f4 ef3 16.Nd7 Qb2 17.Nf8 Be3 18.Rb1 Qc3 19.Kf1 fe2 20.Qe2–+) 15.Ba3 (15.Rc1 Nd7=) 15...b6 (15...Qc7 16.Nc6 (16.cd5? Qe5 17.Qd4 Qd4 18.ed4 Nb3–+) 16...bc6 17.Bc5=+) 16.Nc6= Qf6 (16...Qd6!?=) 17.0-0+= Bb7 (better 17...Qf7!?+=) 18.cd5+- Bc6 (18...Qf5 19.Bc4+-) 19.bc6 (19.dc6 Rad8 20.Qc2 Qe5+-) 19...Rfd8 (19...Qe5 20.Bc5 bc5 21.de6+-) 20.d6 (20.h4 Bh4 21.Bc5 bc5+-) 20...Qe5+- 21.d7 Rf8?? (better 21...Qc7!?+-) 22.Bc5 (22.Qd4!? Qf5 23.c7 Bf6+-) 22...bc5 23.Qb3 (23.Bc4 Bd8+-) 23...Bd8 (better 23...Rab8 24.Bb5 a6+-) 24.Bc4 Rf6 (24...Kf7 25.Rab1+-) 25.Rad1 (better 25.Qb7 Rb8 26.Qa7+-) 25...Rb8 26.Be6! Kf8 (26...Qe6 27.Qb8 Deflection (27.Qb8 Overloading); 26...Re6 27.c7 Passed pawn) 27.Bd5?? (better 27.c7 Qc7 28.Qd5+-) 27...Rb3–+ 28.Bb3 Ke7 (28...Rc6 29.Bc2–+) 29.Rd5 (29.Bd5–+) 29...Qc3 30.Bd1 (30.Rb1 Rc6 31.Rdd1 c4–+) 30...Rc6 31.Bg4 (31.Be2 Rb6–+) 31...Qc4 (better 31...g6!? 32.Be2–+) 32.Rfd1 Qa4 33.Re5 Kf8?? (better 33...Kf7–+) 34.Re8+- Kf7 35.Re1 (better 35.Rd8 Qd1 36.Bd1+-) 35...Qa5 (better 35...Rd6–+) 36.Bh5 (36.Rc1–+) 36...g6 37.Bg4 (37.Rd1 gh5 38.Re4 c4 39.Rf4 Kg6–+) 37...Rd6 (37...Qe1 38.Kg2 Rf6 39.Be6 Kg7 40.Re7 Be7 41.Bb3 Rf2 42.Kh3 Qf1 43.Kg4 h5) 38.f3 (38.Rf1 h5 39.Bh3–+) 38…Qe1 (38...Qe1 39.Kg2 Qe2 40.Kh3 Qf1) 0–1. GuestNSBZ – GuestNYZQ, freechess.org, 2017.

4.Nf3 Bd6 5.e3 (5.e4 Ne4 6.Bd3=) 5...e5? (better 5...Bc7!?=) 6.Ne5+- (worse 6.Be5 Be5 7.Ne5 0-0+=) 6...Be5 7.Be5 d6 8.Bb2 (8.Bf6 Qf6 9.Nc3 Be6+-) 8...0-0 9.Be2 (9.Nc3 a6+-) 9...Be6 (9...a6 10.Nc3+-) 10.0-0 d5 (10...a6 11.Nc3+-) 11.a4 1–0. DEFFM – GuestPPBB, freechess.org, 2020.

4.f4 d5 5.c4 (5.Nf3!?=) 5...d4 6.Nf3 a6 7.Qb3 ab5 8.cb5 b6 9.e3 Bd7 (9...Bd6 10.Bc4=+) 10.ed4 (10.Bc4 de3 11.de3 Bd6+/–) 10...Ne4 (better is 10...Bc8=) 11.d3 Nf6 12.Nbd2 Ra5 13.a4 Bd6? (13...Bc8 14.Nc4 Ra8 15.a5 ba5 16.Bc3+=) 14.Ne4 (better is 14.Nc4!? Bc8 15.Na5 ba5 16.Qc4 cd4 17.Qd4+-) 14...Ne4 15.de4 Bf4 16.Bc3 (16.dc5 0-0+-) 16...Ra8 (16...cd4 17.Ba5 ba5 18.Nd4+/–) 17.d5 (17.dc5 0-0+-) 17...ed5 (better is 17...0-0+/–) 18.Qd5+- (18.Bg7 Rg8 19.Qd5 Bg4 20.Qd8 Kd8 21.Bf6 Kc7+/–; 18.ed5?! 0-0 19.Be2 Bg4=) 18...Ra7 19.Bg7 Rg8 20.Be5 Be5 21.Ne5 Be6 22.Qd8 Kd8 23.g3 f6 24.Nf3 Nd7 25.Be2 Rg4 26.Bd3 c4 27.Bc2 Nc5 28.Nd4 Kd7 29.0-0 Ne4 30.Be4 Re4+= 31.Rad1 Ke7?? 32.Nc6+- Kf7 33.Na7 c3 34.Rc1 c2 35.Rc2 Bd5 36.Rc7 Kg6 37.Nc6 h6 38.Ne7 Kg5 39.Nd5 Kh5 (40.Rg7 Ra4 41.Nf6) 1–0. cry – NoLogicHere, Caissa.com, 2004.

4.a3 (--> 1.b4 e6 2.Bb2 Nf6 3.a3 c5 4.b5).

4.a3 b6 5.Nf3 Bb7 6.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.a3 c5 5.b5 b6 6.Nf3 Bb7).

5.e3 Bb7 6.c4 d6 (6...d5 7.cd5 Nd5 8.Nf3=) 7.Nf3 Nbd7 8.Be2 Rc8 (8...Be7 9.Nc3=) 9.0-0+= d5 10.d4 (10.cd5 ed5 11.Qc2 Bd6=) 10...Bd6 (10...dc4 11.Bc4 cd4 12.Qd4 Bf3 13.gf3=) 11.Nbd2 0-0 12.Rc1 Qe7 13.Re1 Rfd8 14.Qb3 Bb8 (14...cd4 15.ed4 Bf4 16.Ba3=) 15.Qa2 h6 (15...cd4 16.Ba3 Qe8 17.ed4=) 16.Qa1 (16.a5 cd4 17.Ba3 Qe8 18.Nd4 Nc5= (worse 18...ba5 19.c5+-)) 16...cd4 17.Nd4 Nc5 18.cd5 Bd5 19.Red1 Qb7 (19...e5 20.Nc2=) 20.Bf3 (20.Nc6 Bc6 21.bc6 Qe7= (worse 21...Rc6 22.Bf6 gf6 23.Bf3+-)) 20...Bf3 (20...Qc7 21.g3=) 21.N2f3+= (worse 21.gf3 Rd7=) 21...e5 (21...a6!?+=) 22.Nc6+- Rd1 (22...Re8!? 23.Rc4 Rc6 24.bc6 Qc6+-) 23.Rd1+- Ncd7? (23...a6 24.Nfe5 Be5 25.Be5+-) 24.Nfe5 (better 24.Ne7!? Kh7 25.Nc8 Qc8 26.Ne5 Be5 27.Be5 Ne5 28.Qe5+-) 24...Be5 25.Be5 Re8 26.Bd4 a6 27.h3 Ra8 28.Qc3 Kh7 29.Qc2 Kh8 (29...Kg8 30.Ne7 Kf8 31.Nf5 ab5 32.ab5+-) 30.Ne5 Ne5 31.Be5 Ne8 32.Qc6 Qe7?? (32...Qc6 33.bc6 b5+-) 33.Qa8 (33.Qa8 Qe5 34.Rd8+-) 1–0. BeepBeepImAJeep (2550) – Mikkelspla (2290), lichess.org, 2018.

5.e3 Bb7 6.Nf3 a5 7.Be2 d5 8.c4 Nbd7 9.0-0 Bd6 10.d4 0-0 11.Nbd2 Qe7 12.Rc1 Rac8 13.h3 Rfd8 14.Qb3 h6 15.Rfd1 e5 16.de5 Ne5 17.Ne5 Be5 18.Be5 Qe5 19.Nf3 Qe7 20.cd5 Nd5 21.Bc4 Nb4 22.Ne1 Kf8 23.Kf1 Rc7 24.Rd8 Qd8 25.Rd1 Rd7 26.Rd7 Qd7 27.Ke2 Bd5 28.Nf3 Bf3 29.Kf3 Qf5 30.Kg3 g6 31.f3 Qe5 32.Kf2 Qf6 33.e4 h5 34.Bd5 (34.Qe3 Qb2 35.Kg3 Qe5 36.f4 Nc2=) 34...h4 (better 34...Qd4 35.Ke2 Nd5 36.ed5 h4-+) 35.g3?? (better 35.Bc4=) 35...Qd4-+ 36.Ke2 hg3 37.Qe3 Qb2 38.Qd2 (38.Kf1 Nd5 39.ed5-+) 38…Qd2 (38...Qd2 39.Kd2 g2-+) 0-1. WarrioR2080 (2300) - SprengStoff (2505), Rated Blitz game, lichess.org, 2020.

5.e3 Bb7 6.Nf3 Be7 7.Be2 0-0 8.c4 d5 9.0-0 Nbd7 10.d4 Bd6 11.cd5 ed5 12.dc5 bc5 13.Nc3 Qe7 14.a5 Rfd8 (better is 14...Rac8!?=) 15.a6+/– Bc8 16.Nd5 Nd5 17.Qd5 Nb6 18.Qh5 h6 19.Rfd1 Be6 Black prepares the advance c4 20.e4 (20.Ne5 Be5 21.Qe5 f6+-) 20...c4 (20...Bb3!? 21.Qg4 g6+=) 21.Bc3 Bc5 22.Ne5 Rd1 23.Rd1 Rc8? (better is 23...Qf6 24.Bf3 Na4+/–) 24.Nc6+- Rc6 25.bc6 Na4 26.Ba1 Qc7 (26...Bd6 27.Be5 Bc7 28.Bd4+-) 27.Qe5 Qc6 (27...Qe5 28.Be5 c3+-) 28.Qg7# 1–0. blackiwhite (1760) – zbrojmistrz1 (1805), internet, 2013.

5.e3 d5 6.Be2 Nbd7 7.Nf3 Bd6 8.0-0 Qc7 (8...0-0 9.Nc3+=) 9.h3 (9.a5 0-0=) 9...Bb7 10.d3 (10.Re1 0-0+=) 10...e5 (10...0-0 11.Na3+=) 11.Nbd2 (11.a5 ba5 12.Bc3 0-0+=) 11...0-0+= 12.c4 e4 13.de4 de4 (worse is 13...Ne4 14.cd5 Bd5 15.Nc4=) 14.Ne1 (14.Nh4 a6+=) 14...Rad8 (14...a6 15.f3+=) 15.Qc2 Be5 (15...Rfe8 16.a5+=) 16.Nb3 Bb2 17.Qb2 Ne5 18.Qc2 Rd7 19.Qc3 Rfd8 20.a5 Nd3 21.a6 Ba8 22.Rd1 Ne5 (22...Nf4 23.ef4 Rd1 24.Bd1 Rd1 25.Qe5 Qe5 26.fe5+=) 23.Rd7= Rd7 24.Nc2 Ng6 25.Rd1 Qd8 26.Rd7 Qd7 27.Qd2 Qc7 28.Ne1 Nh4 (28...Ne5 29.Qc3=) 29.Qd1 (29.g3 Nf5=) 29...Nd7 (29...Ng6 30.Nc2=) 30.Nd2 f5 (30...Nf5 31.Qc2 Nf6 32.Qc3=) 31.Nf1 Ne5 32.Nh2 Nf7 33.f3 (33.Nc2 Qe7=) 33...ef3 (33...Nd6 34.f4=) 34.Nhf3 Ng6 (34...Qe7 35.Nh4 Qh4 36.Kf1+=) 35.Qd3 (35.Bd3 Nd6=) 35...Be4 36.Qd1 h6 (36...Qe7 37.Nd2=) ½–½. Ruhle,Ernst Albrecht – Dittler,Volkfried, Wangs Pizol op, 1996.

5.Nf3 d6 6.e3 Nbd7 7.Be2 Bb7 8.0-0 Be7 9.c4 0-0 10.d3 a5 11.Nbd2 e5 12.Nh4 g6 13.Bf3 Qc7 14.Bb7 Qb7 15.Qf3 d5 16.e4 (16.cd5 Nd5 17.Nc4 Rad8+=) 16...d4 17.g3 Nh5 18.Nf5 Ndf6 19.Ne7 Qe7 20.Qg2 Ne8 21.f4 ef4 22.gf4 Nd6 23.f5 Kh8 24.f6 Qe5 (24...Qe6 25.Nf3=) 25.Nf3 (better is 25.Rae1+/–) 25...Qf4? (better is 25...Qe6+=) 26.Bc1+- Qf6 27.e5 Qf5? (27...Qd8 28.ed6 f6+-) 28.ed6 Rae8 (28...f6 29.Bh6 Rfd8 30.Nd4+-) 29.Ng5 (better is 29.Bh6 Kg8 30.Ng5 Qd7 31.Bf8 Rf8+-) 29...Qd7 30.Bd2 f6 (30...h6 31.Ne4 Kg7 32.Rae1+-) 31.Ne4 f5 (31...Re6 32.Ba5! ba5 33.Nc5 Qd6 34.Ne6 Qe6 35.Rae1+-) 32.Bh6 Rf7 (32...Ng7 33.Ng3 Re6 34.Bg7 Qg7+-) 33.Ng5 Rf6 (33...Nf6 34.Qc6 Kg8 35.Nf7 Qf7 36.Rae1+-) 34.Rae1 Rd6 35.Qb7! (35.Qb7 Rf8 36.Qd7 Rd7 37.Bf8+-) 1–0. Nadanian,Ashot – Gofshtein,Leonid D, Internet Chess Club 3m + 0s blitz, 2006.

5.a4 b6 6.e3 d5 7.Nf3 Bb7 8.Be2 Nbd7 (8...Bd6 9.0-0=) 9.0-0 Bd6 10.d3 (10.cd5 Bd5 11.Nc3 Bb7=) 10...e5 (10...dc4 11.dc4 Qc7 12.Nbd2=) 11.Nbd2 (11.cd5 Nd5 12.Nbd2 0-0=) 11...d4 (11...e4 12.Ne1=) 12.ed4 (12.Nh4!?=) 12...ed4+= 13.Re1 0-0 14.Bf1 Qc7 (14...Re8 15.Qc2+=) 15.h3 (15.Qc2 Rfe8+=) 15...Rfe8–/+ 16.Qc2 Nh5 (16...Ne5 17.Be2–/+) 17.Ne4 (17.g3 Rad8+=) 17...Bf4 (17...Rad8 18.g3+=) 18.Bc1 (18.Be2 f5 19.Ned2 Re7–/+) 18...Be4 (18...Bc1 19.Rac1 Ne5 20.Ne5 Re5 21.Be2+=) 19.de4 Ne5 (19...Bc1 20.Rac1 Rad8 21.Rcd1+=) 20.Ne5 Be5 (20...Qe5 21.Bb2+=) 21.Qd3= Re7 (21...Bf4 22.Bb2=) 22.Bg5 (22.g3!?+=) 22...f6= 23.Bd2 Nf4 (23...Bh2 24.Kh1 Bf4 25.g3 Bd2 26.Qd2=) 24.Bf4 Bf4 25.g3 Bd6 26.f4 (26.Rad1 Rae8=) 26...Rae8 (26...g5 27.Bg2 Rf8 28.fg5 Bg3 29.gf6 Rf6 30.Rf1+=) 27.Bg2+= h5?? (27...g5 28.e5 fe5 29.fg5=) 28.Qf3 (better is 28.e5!? fe5 29.Bd5 Rf7 30.fe5 (30.Bf7?! Qf7 31.fe5 Be5+=) 30...Be5 31.Qf5+- (31.Bf7?! Qf7 32.Re2 h4+=)) 28...h4 (28...g6 29.Rad1=) 29.e5 (29.Qg4 d3+/–) 29...fe5= 30.Qd5 (better is 30.Qh5!? e4 31.Re4 Re4 32.Be4 Re4 33.Qd5 Qf7 34.Qe4 hg3 35.Rf1 Qc4 36.Qe8 Bf8 37.Kg2=) 30...Kh8–/+ 31.fe5 (31.Re4 A) worse is 31...ef4 32.Re7 Re7 33.Qh5 Kg8 34.Bd5 Rf7 35.Re1+- (worse is 35.Bf7 Qf7 36.Qh4 fg3+=); B) 31...hg3 32.fe5 Re6 33.ed6 Qd6 34.Qd6 Rd6 35.Re8 Kh7 36.Rae1+-; C) 31...g6 32.f5 gf5 33.Rh4 Rh7 34.Rh7 Kh7=) 31...Be5 32.g4?? (better is 32.Re4 g6 33.Rh4 Kg7 34.Rg4 Bg3 35.Be4–/+) 32...d3! 33.Qd3 (33.Re5 Qe5 34.Qe5 Re5 35.Bf1–+) 33...Bd4 (33...Bd4 34.Kh1 Re1 35.Re1 Re1 36.Bf1 Qf4 37.Qh7 Kh7 38.g5 Rf1 39.Kg2 Qf2) 0–1. GuestZYWL – GuestTNCY, freechess.org, 2016.

5.a4 d5 6.e3 d4 (6...Bd6 7.Nf3=) 7.ed4 (7.Nf3 de3 8.fe3 Bd6=) 7...cd4= 8.Nf3 d3 (better is 8...Bc5!?=) 9.Qb3+/– Nbd7 10.Qd3 (10.Bd3?? Nc5 11.Qc2 Qd3–+) 10...Bb4 11.Be2 Qb6 (11...Qc7 12.0-0+/–) 12.Nc3 Nc5 13.Qc2 Bc3 (13...0-0 14.0-0+/–) 14.Qc3 (14.dc3?! 0-0+/–) 14...0-0 15.d3 Ncd7 16.0-0 Qd6? (better is 16...Rd8+-) 17.Ba3 Nc5 (17...Qc7 18.Bf8 Nf8 19.Qe5+-) 18.d4 Nce4 19.Qe3 (19.Bd6?! Nc3 20.Bd3 Re8+-) 19...Qc7 20.Bf8 Kf8 21.Ne5 b6 22.Bf3 (22.Bd3!? Bb7+-) 22...Bb7 23.d5! ed5 (better is 23...Qe5 24.Be4 Ng4 25.Qa3 Kg8 26.Bh7 Kh7 27.Qh3 Nh6 28.de6 fe6+-) 24.cd5?? (better is 24.Qf4 Kg8 25.Be4 de4 26.Rad1+-) 24...Qe5= 25.Qa3 (25.Rfe1!? Bd5 26.Qb6=) 25...Kg8 (25...Nc5 26.Rfe1 Qf4 27.Rad1–/+) 26.Rfe1 (26.Qe3 Bd5 (worse is 26...Qd5 27.Qb6 Nd7 28.Qe3=) 27.Qb6 Nd2 28.Bd5 Nd5–/+ (28...Qd5?! 29.Rfe1=; 28...Nf1?? 29.Ba8 Nh2 30.Qd8 Ne8 31.Rb1+-)) 26...Bd5–/+ 27.Rad1 Rd8?? (better is 27...Qc3!? 28.Qc3 Nc3–/+) 28.Qe3 (better is 28.Be4!? Ne4 29.f3+/–) 28...Bc4?? (better is 28...Re8 29.Qb6 Qc3=) 29.Qb6 (29.Qb6 Rd1 30.Rd1+/– (30.Bd1?! h6=)) 1–0. GuestNJYN – GuestJTHM, freechess.org, 2017.

5.a4 Be7 6.e3 0-0 7.Nf3 b6 8.Be2 Bb7 9.0-0 d6 10.d4 cd4 11.Nd4 Ne4 (11...Nbd7 12.Nd2=) 12.Nd2 Nc5 13.Bf3 Bf3 14.Qf3 (worse is 14.gf3 Qc7+=) 14...d5? (better is 14...Ra7!?+=) 15.cd5+/– Qd5 16.e4 (16.Qd5!? ed5 17.Nf5+-) 16...Qd8 17.Nc4 Qc7 18.e5 Ra7 19.Rac1 (19.Rfd1 Rd8+=) 19...f6 (better is 19...Na4 20.Ba3 Nc5+=) 20.Nd6?? (better is 20.Qe3 f5 21.Rfe1+/–) 20...fe5–+ (20...Bd6?! 21.Ne6 Qf7 22.Nf8 Bf8 23.ef6=) 21.Qg3?? (better is 21.Ne6 Rf3 22.Nc7 Bd6 23.Ne8–+) 21...ed4 (21...Qd6?! 22.Nf3 Bf6 23.Rfd1–+; 21...Bd6?! 22.Ne6 e4 23.Qh4 Bh2 24.Kh1–+) 22.Bd4 (22.Nc4 Qg3 23.hg3 Na4 24.Bd4–+) 22...Bf6 (better is 22...Bd6 23.Qh3 Qf7–+) 23.Bc5 (23.Bf6 Rf6 24.Ne8 Qg3 25.Nf6 gf6 26.fg3 Nbd7–+) 23...bc5 24.Rfd1 Be7 (24...Qe7!? 25.Ne4 Rd7 26.Re1–+) 25.Qe5 Rf6 (better is 25...Bd6!? 26.Rd6 Qf7–+) 26.Rc5–/+ Bd6?? (better is 26...Qd7–/+) 27.Rd6 (27.Rd6 Qe7 28.Rc8 Rf8 29.Rf8 (29.Qe6? Qe6 30.Rf8 Kf8 31.Re6 Re7–+) 29...Qf8 30.Re6+=) 1–0. GuestTQXW – GuestPVNQ, freechess.org, 2017.

5.e3 Be7 6.Nf3 0-0 7.a4 b6 8.Na3 Bb7 (8...d5 9.Be2 Nbd7 10.0-0 Bb7 11.Rc1 Qc7=; 8...d6 9.Be2 Bb7 10.0-0 Nbd7 11.Qc2 Qc7=; 8...Qc7 9.Bd3 Bb7 10.Qc2 Bf3 11.gf3 d5=; 8...Ne4 9.d3 Nd6 10.Be2 Bf6 11.Qc2 Bb7=) 9.Be2 ½–½. Lehr,Thomas – Luckow,Joern, Germany, 1993.

5.e3 Qc7 6.Nf3 h6 (6...Be7 7.Be2=) 7.Qc2 Be7 8.Bd3 d6 9.0-0 Nbd7 10.a4 b6 11.a5 ba5 12.Bc3 Bb7 13.Ba5 Qc8 14.e4 (14.Be2 a6+=) 14...0-0 15.Nc3 Ne5 (15...a6 16.Rfb1=) 16.Ne5+= de5 17.Be2 Qd7 18.d3 Qd4? (better 18...Rfb8+=) 19.Nd5!+- Nd5 (19...Bd5 20.Bc3) 20.cd5 ed5?? (better 20...c4 21.dc4 ed5+-) 21.Bc3 de4 22.Bd4 ed3 23.Bd3 ed4 24.Rfe1 Bd6 25.Bc4 Bc8 (25...a6 26.ba6 Bc6+-) 26.Qg6 Bf4 (26...Be6 27.Be6 Bh2 28.Kh2+-) 27.Re7 Be6 28.Be6 fe6 29.Qg7 1–0. DEFFM – GuestNSZD, freechess.org, 2020.

5.e3= Be7 6.Nf3 a6 7.a4 ab5 (better 7...0-0!?=) 8.ab5+- Qa1 9.Ba1 Ra1 10.Bd3 b6 11.0-0 Bb7 12.Qc2 (12.Qe2 d5+-) 12...d5 (12...Bf3 13.gf3 d5 14.cd5 ed5 15.Nc3+=) 13.Qb2 White fights for the Initiative 13...Ra5 14.Ne5 0-0 15.f4 Nbd7? (better 15...Ra7!?+-) 16.Nc6+- Bc6 17.bc6 Nb8? (17...dc4 18.Bc4 b5 19.Bb5 Nb6+-) 18.Qb6 Ra6 19.Qb7 Rc6 20.Qe7 dc4 (20...Nbd7 21.cd5 Rb6+-) 21.Bc4 Nbd7 22.Bb5 Re8 (22...Rc7 23.f5 Re8 24.Qd6+-) 23.Qe8! (23.Bc6?! Re7 24.Nc3 e5=) 23...Ne8 24.Bc6 Ndf6 (24...Nef6 25.Rc1+-) 25.Be8 Ne8 26.Rc1 c4 27.Rc4 Nd6 28.Rc6 Ne8 29.Rc8 Kf8 30.d4 Ke7 31.Nc3 Kd7 32.Ra8 Nf6 (32...Nc7 33.Rg8 Ne8 34.g4+-) 33.Ra7 Ke8 34.Nb5 (better 34.e4 h5+-) 34...g6 (34...Ne4 35.Nc7 Kf8 36.Na6+-) 35.Nd6 Kf8 (35...Kd8+-) 36.Rf7 (36.Rf7 Kg8 37.Rf6+-) 1–0. GuestHRDF – GuestLBHX, freechess.org, 2020.

5.a4 a5 6.e3 b6 7.Nf3 Bb7 8.Be2 h6 9.0-0 d6 10.d4 cd4 11.Nd4 Nbd7 12.Bf3 Bf3 13.Qf3 Qc8 (13...Ne5 14.Qe2+=) 14.Nc6+/- Nb8 (14...Qc7 15.Nd2+/-) 15.Bf6 (15.Ne7 Be7 16.Qa8 0-0+-) 15...gf6 (better 15...Nc6!? 16.bc6 gf6+-) 16.Ne7!+- (16.Qf6?! Rg8 17.Qf3 Nc6 18.bc6 Qc7=) 16...Be7 (16...Ke7 17.Qa8 Discovered attack; 16...Be7 17.Qa8 Discovered attack) 17.Qa8 0-0 18.Nd2 Qc5? (18...Nd7 19.Qf3 Ne5+-) 19.Qa7 d5 20.cd5 ed5 21.Nf3 Bd6 (21...Rc8 22.Qb7+-) 22.Rfc1 Qb4 23.Qb6 Kh7 (23...Nd7 24.Qc6 Ne5 25.Qd5 Nf3 26.Qf3+-) 24.Rab1 Qg4 (24...Qa3+-) 25.Qd6 Rg8 26.Ne1 Rg6 (26...Qe6 27.Qc7+-) 27.Qb8 1-0. DEFFM – GuestPXJG, freechess.org, 2021.

5.a4 Qa5 6.e3 ab5 (better is 6...Be7!?=) 7.ab5+/– Qb4?? (better is 7...Qa1 8.Ba1 Ra1+/–) 8.Ra8+- Qb2 1–0. GuestQQWL – GuestFMFR, freechess.org, 2017.

5.a4 b6 6.e3 a5 7.Be2 Bb7 8.Bf3 Qc7 9.Bf6 gf6 10.Bb7 Qb7 11.Nf3 (11.Qf3 Qf3 12.Nf3 d6+=) 11...d6= 12.0-0 Nd7 13.d4 (13.Nc3 Rc8=) 13...h5 (13...f5 14.Nc3=) 14.Nc3 White prepares the advance d5 (14.d5 f5+=) 14...h4 (14...Bg7 15.d5 Ke7 16.Qd2+-) 15.d5 (15.h3+=) 15...e5? (15...h3!? 16.g3 0-0-0=) 16.Nd2 (16.g3 hg3 17.fg3 Bh6+-) 16...h3 17.g3 Bh6 (17...Be7!?+-) 18.Nde4 Ke7 19.Qg4 (19.Qf3 Rag8+-) 19...Rag8 (19...Qc8 20.Qf3+- (worse 20.Qh3 Be3 21.Qf5 Bd4=)) 20.Qf5 Qc8 (20...Bf8 21.Rfd1+-) 21.f4 (21.Rfe1 Rg6+-) 21...Qc7 (21...Rg6 22.Rf3+- (22.Qh3 Bf4 23.Qf5 Be3 24.Kh1 Bd4–/+)) 22.g4 (22.Nd1 Rg6+-) 22...Rg6 23.Rf3 Nf8? (better 23...Bg7+-) 24.fe5 (worse 24.Rh3 Qd7 25.Kf2 Qf5 26.gf5 Rgg8+-) 24...de5 (24...fe5 25.Kh1 Ke8+-) 25.d6 (25.d6 Qd6 26.Nd6+-) 1–0. DEFFM – GuestTNZV, freechess.org, 2020.

5.a4 d5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 a6 6.a4).

5.a4 d5 6.e3 Be7 7.Nf3 0-0 8.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

7.Ba1 Qa5 8.Bc3 Qc7 9.g3 Be7 10.Bg2 0-0 11.e4 (11.Nf3 Qb6=) 11...d6 (11...d5 12.ed5 ed5 13.Bf6 Bf6 14.Bd5=) 12.f4= b6 13.Ne2 Bb7 14.d3 Nbd7 15.0-0 d5 16.cd5 ed5 17.Bf6 (17.e5!? Ne8 18.d4=) 17...Nf6=+ 18.e5 Ng4 19.Qc1 d4 (19...Qd7 20.Nbc3=+) 20.Nd4= Bg2 (20...Qd7 21.Nf5 Qf5 22.Bb7=) 21.Kg2 Rd8 22.Nf5 Rd3 (22...Qd7 23.Ne7 Qe7 24.Qd2=) 23.h3 Qb7 24.Kg1 Rg3?? (better 24...g6 25.Qc4 Ne3 26.Ne3 Re3=+) 25.Ng3+- Nh6 26.Qd2 c4 (26...Qc8 27.f5 c4 28.f6+-) 27.Qg2 (27.Rc1!? Qc8 28.Kg2 Qa8 29.Kh2 Qe8 30.Rc4 Kh8+-) 27...g6 (27...Qd7+-) 28.Qb7 (28.Qb7 Kf8 29.Qb6+-) 1-0. Shichibukai_Backom (2310) - shiva23 (2310), Rated Blitz game, lichess.org, 2016.

7.Ba1 Qa5 8.Bc3 d5?? 9.Ba5+- 1–0. DEFFM – GuestJJFT, freechess.org, 2019.

7.Ba1 b6 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 a6 4.a4 ab5 5.ab5 Ra1 6.Ba1 c5 7.c4 b6).

7.Ba1 d5 8.e3 Bd6 9.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3 Bd6 9.c4).

7.Ba1 d5 8.Nf3 dc4 9.e3 Bd7 (9...b6 10.Bc4 Bb7 11.d4=) 10.Bc4 b6 (10...Ne4!?=) 11.Be5+= Nd5 (11...Ne4 12.d3 Nd6 13.Qb3+=) 12.0-0+/– Be7 (12...Nb4!?+/–) 13.Bg7+- Rg8 14.Be5 Nc7 (14...Bf6 15.d4+-) 15.Nc3 Rg4 16.d4 cd4 (16...f6 17.Bg3+-) 17.Nd4 Rg5 (17...Rg6 18.Bd3 f5 19.Qf3+-) 18.f4 Re5 (18...Rg6+-) 19.fe5 Bc5 20.Qh5 Qe7 21.Qh7 (21.Ne4 h6+-) 21...Bc8 (21...f5 22.Qg8 Qf8 23.Qg6 Kd8 24.Ne6 Ne6 25.Be6+-) 22.Ne4 Bb7 (22...f5 23.Nf6 Kd8+-) 23.Nd6! (23.Nd6 Kd7 24.Rf7 Bd6 25.ed6 Qf7 26.Qf7 Kd6 27.Be6 Ne6 28.Qe6 Kc7 29.Qe5 Kc8 30.Qe8 Kc7 31.Ne6 Kd6 32.Qb8 Ke6 33.Qb7+-) 1–0. GuestGZFM – GuestVJRP, freechess.org, 2018.

7.Ba1 d5 8.Nf3 Nbd7 9.d3 Bd6 10.g3 b6 11.Bg2 0-0 12.0-0 Bb7 13.cd5 ed5 14.d4 c4 15.Nfd2 Qc7 16.Qc2 Re8 17.e3 Nf8 18.Nc3 Ne6 19.Rc1 Ra8 20.Qf5 d5 draws heavy fire 20...Bb4 21.Qc2 (21.Bb2 Qe7+=) 21...Qd7 (21...g6 22.Nf3+=) 22.Rb1+= Bc3 23.Bc3 Ng5 24.Bb4 h6 25.Nf3 (25.h4 Nh3 26.Kf1 Qe6+=) 25...Nf3 26.Bf3 Bc8 27.Bg2 Qe6 28.Qb2 Bd7 29.Bf1 Bb5 (29...Ne4 30.Bg2–/+) 30.Bg2 (30.Be1 Bd7 31.Qb6 Qb6 32.Rb6–/+) 30...Bc6 31.Be1 (31.Ra1 Ra1 32.Qa1 Qf5–/+) 31...b5–+ 32.h3 (32.Ra1 Ra1 33.Qa1 Qf5–/+) 32...Qf5 33.Bb4 Qd3 34.Kh2 h5 35.Kg1 Bd7 36.Bf1 (36.Ra1 Ra4 37.Ra3 Ra3 38.Qa3 Qb1 39.Kh2 Kh7–+) 36...Qf5 37.Bg2 Ne4 38.Rf1 Ng5 (38...Ra4 39.Kh2 Ng5 40.h4 Nf3 41.Kh1–+) 39.h4 Nf3 (39...Ne4 40.Kh2–+) 40.Kh1 Qd3 41.Ra1 (41.Rc1 Qe4 42.Bc3–+) 41...Ra1 42.Qa1 Qe2 43.Qf1 Qb2 44.Bf3 Qb4 45.Bd5 (45.Qa1 c3 46.Qa8 Qf8–+) 45...Qb2 46.Kg2 (46.Be4 g6 47.Kg2 c3–+) 46...Bf5 (better is 46...c3!? 47.Be4 Bc6 48.Bc6–+) 47.Qd1? (47.Bc4 bc4 48.Qc4–+) 47...Bg4 48.Qf1 Be2 49.Qe1 (49.Qh1 c3 50.Bf7 Kf7 51.Kh2–+) 49...c3 50.Be4 b4 51.d5 g6 52.d6 Bg4 53.d7 (53.Qf1 c2 54.Bc2 Qc2 55.Qa1 Qe4 56.Kh2–+) 53...Bd7 54.Qd1 (54.g4 hg4 55.Qd1 Bc6 56.Qd8 Kh7 57.Bc6 c2–+) 54...Bc6!! 55.Qd8 (55.Bc6 c2 Passed pawn) 55...Kh7 56.Bc6 c2 57.Qf8 (57.Bd5 c1Q 58.Qe7 Qg7–+) 57...c1Q 58.Qf7 Qg7 59.Qf3 b3 60.Be4 Kh8 61.Bd3 (61.Qf4 b2 62.Qb8 Kh7–+) 61...b2 62.Qa8 Kh7 63.Qd5 b1Q 64.Qh5 (64.Bb1 Qb1 65.Qc6 Qgb7 66.Qb7 Qb7 67.Kh2 Kg7–+) 64...Qh6 65.Qh6 Kh6 66.Bb1 Qb1 67.Kf3 Kh5 68.e4 Qe1 69.Kg2 Qe4 (69...Qe4 70.f3 Qe2 71.Kh1 Qf3 72.Kg1 Kg4 73.Kh2 Qg3 74.Kh1 Kf3 75.h5 Qg2) 0–1. Wantoch_Rekowski,Jacek (2245) – Rocco,Jorge Hugo (2200), Spain – Poland, 2008.

7.Ba1 Be7 8.e3 Qa5 9.Bc3 Qa2 10.Nf3 d5 11.Be2 0-0 12.0-0 dc4 13.Ne5 Qa7 14.Nc4 b6 15.d4 Bb7 16.dc5 Bc5 (16...bc5 17.Bd3+=) 17.Bf6+- gf6 18.Nc3 Qa8 19.Bf3 Nd7? (better 19...Bf3 20.Qf3 Qf3 21.gf3 Nd7+=) 20.Qd7+- Bf3 21.gf3 Qf3 22.Nd2 Qf5 23.Nce4 Bb4 24.Ng3 Qg4 (24...Qg6 25.Nc4+-) 25.Nde4 Qg6 26.Qd4 (26.Kh1 Kh8+-) 26...Be7 27.Qb6 f5 28.Nc5 Bd8 (28...Rd8 29.Qc7 Qg5 30.Nb7+-) 29.Qa7 h5 (29...f4 30.ef4 Qg7 31.b6+-) 30.Nd7 White plans b6 30...Re8 31.b6 h4 (31...f4 32.b7 fg3 33.fg3+-) 32.b7 Bc7 33.Qa8! Rd8 (33...Ra8 34.ba8Q) 34.Qd8! Bd8 A deflection 35.b8Q A pinning theme. 35...Qg5 (35...hg3 36.Qd8 Kg7 37.fg3+-) 36.f4 Qe7 37.Nh5 Kh7 38.Nhf6 Kg6 39.Kh1 Kh6 (39...e5 40.Rg1 Kh6 41.Ng8 Kh7 42.Ne7 Kh6 43.Nf6 Be7 44.Qh8) 40.Rg1 h3 (40...e5 41.Ng8 Kh7 42.Ne7 Kh6 43.Nf6 Be7 44.Qh8) 41.Ng8 (41.Ng8 Kh5 42.Ne7 Kh6 43.Nf6 Be7 44.Qh8) 1–0. GuestGKNZ – GuestRRSF, freechess.org, 2020.

5.e3 a5 6.Be2 Bb7 7.Bf3 Bc8 1–0. GuestXZJW – GuestTCYC, freechess.org, 2017.

5.e3 Bb7 6.f3 d5 7.Bd3 Nbd7 8.Ne2 Bd6 9.0-0 Ne5 10.Qc2 Nd3 11.Qd3 Qc7 12.cd5 (12.f4 dc4 13.Qc4 Qd8=+) 12...Bd5 13.e4 Bh2 14.Kh1 Bb7?? (14...Be5 15.Be5 Qe5 16.Nbc3–/+) 15.f4?? (better is 15.Bf6 gf6 16.f4+=) 15...Ng4=+ 16.Nbc3 0-0 17.Ng1 Bf4?? (better is 17...Rfd8 18.Qe2 h5–+) 18.Qf3+= h5 19.Qf4 e5 20.Qg3 f5 21.Qe1 (21.Rf5 Rf5 22.ef5 Rf8+/–) 21...f4 22.Nf3 Qf7 23.Nd1 Rfe8 24.Nh2 Rad8 25.Ng4 hg4 26.g3 (better is 26.Qe2+=) 26...Qh5–+ 27.Kg1 Rf8 (27...Qh3 28.Rf2 Qg3 29.Kf1 Qd3 30.Kg1 Qb5 31.Rh2–+) 28.Nc3–+ Rd3 29.Qf2?? (better is 29.Qd1–+) 29…Rg3 (30.Qg3 fg3 31.Rf8 Kf8 32.Rf1 Ke7–+) 0–1. valpa – Peter_Richard, playchess.de, 2003.

5.e3 Bb7 6.Nf3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4).

5.e3 Bb7 6.Nf3 d5 7.Be2 Bd6 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5 7.Be2 Bd6).

5.e3 Qc7 6.Nf3 Bd6 7.Be2 a6 8.a4 (8.ba6 e5+=) 8...ab5 (8...Bb7 9.Nc3=) 9.ab5 Bb7 10.h3 (10.Ra8 Ba8 11.d3 Be7+=) 10...Ra1= 11.Ba1 Ne4 (11...Be7 12.0-0=) 12.d3 (worse is 12.Bg7 Rg8 13.d3 Nf2 14.Kf2 Bg3 15.Kf1 Rg7–/+) 12...Nf6 13.e4 Bf4 14.0-0 Rg8 (14...0-0 15.Bf6 gf6 16.Nc3+=) 15.e5 (15.Nbd2 d6 16.Bc3+=) 15...Nh5 (15...Bf3 16.ef6 Bb7 17.fg7+=) 16.g4 (16.g3 Bh6+/–) 16...g6 (better is 16...g5!?+=) 17.gh5+- gh5 18.Kh1 Be5 19.Be5 (19.Nbd2 Ba1 20.Qa1 Ke7+-) 19...Qe5+/– 20.Rg1 Rg1 21.Qg1?? (better is 21.Kg1 Qf5 22.Kg2+/–) 21...Qe2–+ 22.Qg8 Ke7 23.Qg5 Kf8 (better is 23...f6 24.Qg7 Kd6 25.Qg3 e5–+) 24.Qd8= Kg7 25.Qg5 Kf8 26.Qd8 Kg7 27.Qg5 Kh8 28.Qd8 ½–½. GuestPPCJ – GuestTJVH, freechess.org, 2017.

5.Nf3 Bb7 6.e3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4).

5.Nf3 Bb7 6.e3 d5 7.Be2 Be7 8.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

5.Nf3 Bb7 6.e3 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Ne4 10.Nbd2 Nd7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7 10.Nbd2 Ne4).

5.Nf3 d6 6.e3 Bb7 7.a4 a5 8.Be2 Be7 9.0-0 h6 10.Nc3 Nbd7 11.d3 Qc7 12.Nd2 0-0-0 13.Bf3 g5 14.Bb7 Qb7 15.Nce4 Rhg8 16.Nf6 Bf6 17.Bf6 Nf6 18.Qe2 g4 19.f4 Rg6 20.f5 ef5 21.Rf5 h5 22.Raf1 Qe7 23.Qf2 g3 24.Qf3 d5 25.Rf6 Rf6 26.Qf6 Qe3 27.Kh1 Qd2 28.Qc6 1–0. bambinik – captainjack, itsyourturn.com, 2001.

5.Nf3 b6 6.cd5 ed5 7.d4 Nbd7 8.dc5 Bc5 9.e3 0-0 10.Nc3 Bb4 11.Qd4 Qe7 12.Bd3 Bc5? 13.Nd5+- Nd5?? 14.Qg7# 1–0. marre (2140) – Orla (1920), GameColony.com, 2003.

5.Nf3 Nbd7 6.e3 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7).

5.Nf3 Be7 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4).

5.g3 Be7 6.Bg2 0-0 7.cd5 ed5 8.Nf3 Bf5 9.0-0 Nbd7 10.d4 Rc8 11.dc5= Bc5 12.Nc3 Nb6 13.Nd4 Bg6 14.Nb3 d4 15.Nb1= Qd7 16.Nc5+= Rc5 17.Ba3 Rc2 18.Bf8+/– Kf8 19.a4 Bf5 20.Na3+- Rb2 21.a5 Nbd5? 22.Qd4 Re2 23.Rfd1 Qe6 24.Bd5 (24.Bd5 Nd5 25.Qc5 Ke8 26.Nc4+-) 1–0. bridlingtonbrummie – Old Beal, ChessWorld.net, 2010.

6.a4 a6 7.g3 (7.e3 Bd6+=) 7...ab5 8.ab5 Ra1 9.Ba1 Be7 10.Bg2 Be6 11.Nf3 Qa5 12.Bf6 (12.Be5!? Nbd7 13.Nc3–/+) 12...Bf6 (12...gf6?! 13.Qb3=) 13.0-0 Qb5 14.Re1 (14.Nc3 Qc6–/+) 14...0-0–+ 15.d4 c4 (15...b6 16.Na3 Qa5 17.Nc2–+) 16.Nc3 (16.e3 Rc8–/+) 16...Qb4 (16...Qb2 17.Na4 Qa3 18.Nc5–/+) 17.Qc2 (17.Qd2 Nc6–/+) 17...Nc6 18.e3 Ra8 (18...Qa5 19.Rb1 Rb8 20.Rb5 Qa1 21.Rb1–/+) 19.Rb1 Qe7 20.Na4 (20.Nd2!? Qd7 21.Qb2–/+) 20...Nb4–+ 21.Qd1 Nd3 (21...Bf5 22.Rb2–+) 22.Qc2 g6 (22...Ra7 23.Nc3–+) 23.Nd2 (23.Nc3 Ra5–/+) 23...Nb4 (23...Bf5 24.Qd1 Bg5 25.Nb6 Be3 26.Nd5 Bf2 27.Kf1–+) 24.Qd1–/+ Nd3 (24...Bf5 25.Rc1–/+) 25.Nc3 (25.Qc2 Ra5–+) 25...Qd7 (25...Ra5!?–/+) 26.Qf3+= d5 draws heavy fire 26...Bg7 (26...Ra3 27.Nd5 Bd5 28.Qd5 (28.Qf6 Bg2 29.Nc4 Ra6–/+) 28...Qd5 29.Bd5–+) 27.Nd5= Bd5 28.Qd5 Qd5 29.Bd5 c3 30.Nb3 (30.Bc4 Ne5! 31.de5 cd2–/+) 30...c2 31.Rf1 Ra7?? (better is 31...Ra3 32.Nc1 b5–/+) 32.Be4+/– Nb4 33.Rc1 Ra2 34.Na1 (34.Bb7? Rb2 35.Be4 Rb3–+) 34...Ra3 (34...f5 35.Nc2 fe4 36.Nb4+-) 35.Nc2 Rc3 36.Kf1 (better is 36.g4!?+/–) 36...f5= 37.Bb7 (37.Rb1 Nc2 38.Bd5 Kh8 39.Rb7 Bf8=) 37...Rc2 (better is 37...Nc2 38.Rb1 Kf8+=) 38.Rb1? (38.Rc2 Nc2 39.Ke2 Nb4+=) 38...Bf8 (38...Nd3!?–+) 39.Rd1 Be7 40.Kg2 Kg7 (better is 40...Kf7–/+) 41.Kf3?? (better is 41.h3–/+) 41...Rc7–+ 42.Ba8 Ra7 43.Be4 fe4 44.Ke4 Na2 (44...Bd6 45.f4–+) 45.Kd3 (45.Rd3–+) 45...Nb4?? (45...Kf7 46.d5–+) 46.Kc4?? (46.Ke4 Bd6 47.f4–+) 46...Ra2–+ 47.Rf1 Kf7 48.e4 Rc2 49.Kb3 Ke6 (49...Re2 50.f3–+) 50.h3 (50.d5 Kd7–+) 50...Re2 51.e5 (51.d5 Ke5 52.f3 Nd3–+) 51...Bf8 (51...Kd5 52.Kc3–+) 52.Kc3 (52.Kc4 Rc2 53.Kb3 Kd5–+) 52...Kd5 53.g4 Nc6 54.Kd3 (54.f4 Nd4 55.Kd3 Rh2–+) 54...Re4 (54...Nd4 55.f4–+) 55.f4 Rd4 56.Ke3 Bc5 57.Kf3 (57.g5 Rd1 58.Ke2 Rf1 59.Kf1 Be3–+) 57...Rd3 58.Kg2 Rd2 (58...g5 59.fg5 Ne5 60.Rf5–+) 59.Kg3 Bd4 (59...g5 60.fg5 Ne5 61.Rf5–+) 60.g5 (60.h4 Rd3 61.Kg2 Be3–+) 60...Ne7 61.Rb1 (61.h4–+) 61...Nf5 62.Kf3 Black now must not overlook the idea h4 62...Rd3 (62...Nh4 63.Kg4 Rg2 64.Kh4 Bf2) 63.Kg2–+ Nh4 64.Kh2 (64.Kf1–+) 64...Rd2 65.Kg3 (65.Kh1 Nf3 66.Rb5 Ke4 67.Rb2 Rd1 68.Kg2 Rg1) 65...Nf5 (65...Rg2 66.Kh4 Bf2) 66.Kg4?? (66.Kf3 Rf2 67.Kg4 Rg2 68.Kf3 Nh4) 66...Ke4 (66...Rg2 67.Kf3 Nh4) 67.Re1 (67.h4 Rd3 68.Re1 Kd5 69.Rg1 Bg1 70.h5 Rg3) 67...Be3 68.h4 (68.Rg1 Bg1 69.h4 Rg2 70.Kh3 Rg3) 68...Rg2 (68...Rh2 69.Re3 Ke3 70.h5 Rh4) 69.Kh3–+ Rf2 (69...Rg3 70.Kh2–+) 70.e6 (70.h5 Rf3 71.Kg2 Kf4–+) 70...Kf4 71.Rb1 (71.e7 Rf3 72.Kh2 Ne7–+) 71...Rf3 72.Kh2 (72.Kg2 Kg4 73.Rb4 Nd4 74.Rd4 Bd4 75.Kh2 Rf2 76.Kg1 Kg3 77.h5 Rf3 78.Kh1 Rf1) 72...Kg4 73.Rb4 Bf4 74.Kg2 Nh4 (74...Ne3 75.Kg1 Rf1) 75.Kg1–+ If White now only could play Re4... 75...Kg5 (75...Kg3 76.Rb1 Be3 77.Kh1 Rf2 78.Rg1 Kh3 79.Rg3 Kg3 80.Kg1 Nf3 81.Kh1 Rh2) 76.Re4 Nf5 (better is 76...Re3 77.Re3 Be3 78.Kh2–+) 77.e7 Ne7 78.Re7 h5 79.Rb7 (79.Kh1 Kg4 80.Re2 g5–+) 79...h4 80.Kg2 (80.Rb2 h3–+) 80...Kg4 81.Rh7 (81.Rb1–+) 81...h3 82.Kh1 (82.Rh3 Rh3 83.Kf2 Rh2 84.Kg1 Kf3 85.Kf1 Rh1) 0–1. Rey Hermida,JJ – Gomez,Francisco, Ibercaja op Zaragoza, 1997.

6.a4 Bd6 7.e3–/+.

6.e3 Bd6+=.

6.e3 Bd7 7.Nf3 Be7 8.a4 a6 9.Be2 ab5 10.ab5 Ra1 11.Ba1 Qa5 12.Bc3 Qb6 13.Qb3 c4–/+ 14.Qb2 Qb5 15.Qb5 Bb5 16.0-0 0-0 17.Nd4 Bd7–+ 18.d3 b5 19.h3 b4 20.Be1? c3 21.Nc2? b3 (21...b3 22.Nd4 c2–+) 0–1. tanto (1710) – badplayer (1800), net–chess.com, 2002.

6.Nf3 b6 7.e3 Be7 8.Be2= 0-0 9.0-0 Nbd7 10.a4 Bb7 11.d3 Rc8 12.Nbd2 Ng4 13.Bc3 Bf6= 14.Bf6 Ndf6 15.Qe1 d4 16.ed4 cd4=+ 17.h3 Nh6 18.Nb3 Nf5 19.g4 Bf3 20.gf5? Be2 21.Qe2 Re8 22.Qf3–/+ Rc3 23.Rab1 Qd6 24.Nc1 Ra3 25.Ne2 Ra4 26.Rfe1 a6 27.Rbc1 ab5 28.Rc6 Qb4 29.Rec1 Ra2 30.Rc8 Qe7 31.Nd4–/+ b4 32.Nc6 Qd7 33.Re8=+ Qe8 34.Nb4 Re2 35.Kf1 Nd7?? 36.Nd5 Re5+/– 37.Nc7?? Qd8 38.d4 Re7 39.d5 Nf6 40.Rc6?? Rc7–+ 41.Qc3 Rd7 42.d6?? (42.d6 Ne4 43.Qb4 Nd6 44.Qb6–+; better is 42.Rc8 h5 43.Rd8 Rd8 44.Qc7 Rd5 45.Qb6 Rf5 46.Qd8 Kh7 47.Qe7+=). grain – RABALA, Live Game Caissa's Web, 2005.

7.Nc3 0-0+=.

7.Nf3 0-0 8.Qc2 a6 9.a4 g6+=.

7.Nf3 0-0 8.Be2 a6 9.a4 Nbd7 10.0-0 Ne4 11.d3 Ng5 12.Ng5 Bg5 13.Bf3 Nf6 14.Nd2 Bd7 15.Qb3 Be6 16.Qc2 b6 17.Nb3 (17.ba6!? Ra6 18.a5=) 17...ab5+= 18.ab5 Rc8 19.Nd2 Nd7 20.e4 d4 21.Nc4 Qc7 22.Rae1 Ne5 23.Ne5 Qe5 24.g3 (24.Ra1 c4–/+) 24...f5 (24...Bf6!?–/+) 25.ef5+= Qf5 26.Bg2 c4 27.Qe2 Rce8 (27...Bf7 28.Bd4 cd3 29.Qb2+=) 28.dc4 Qc5 29.Qe5 Bf6? (better is 29...Bc4 30.Qd4 Qd4 31.Bd4 A) worse is 31...Bb5 32.Re8 (worse is 32.Bb6 Bf1 33.Re8 Re8 34.Kf1 Rb8+=) 32...Re8 33.Ra1+/–; B) 31...Bf1 32.Re8 Re8 33.Bf1 Rb8=) 30.Qc5+- bc5 31.Rd1?? (better is 31.Re6 Re6 32.Bd5+-) 31...Bc4–/+ 32.Rfe1 (better is 32.Ba3!? Bf1 33.Kf1–/+) 32...Bb5 33.Ba3 Re1 34.Re1 Re8 (better is 34...Rc8!?–+) 35.Re8 Be8 36.Bc5 Kf7 37.Be4 g6 (37...Bb5 38.f4+= (38.Bh7? g6–+)) 38.f4 Bd7 39.Kf2 Be6 40.Kf3 Bc4 41.Bc2 (41.g4 Ke6=) 41...Bd5 (41...d3 42.Bd1+=) 42.Be4 Bc4 43.Kf2 d3 (better is 43...Ke6!?=) 44.Ke3+/– Ke6 45.Bd3 Kd5 46.Bc4 Kc5 47.Bg8 h6 48.Ke4 Kd6 49.Bh7 g5 50.fg5 (50.Kf5 Ke7+/–) 50...hg5 51.Kf5 Bd8 52.Kg6 Ke5 53.Kf7 Bf6 54.Kg6 Bd8 55.Kh5 Kd4 56.Kg4 Ke3 57.Kh3 Kf3 58.Bg8?? (better is 58.Bf5+=) 58...g4 0–1. Melzig,Ernst – Gafke,Manfred, Bayern–ch Seniors, 2001.

7.Nf3 0-0 8.Be2 a6 9.a4 (9.Qa4 Nbd7+=) 9...Nbd7 (9...Bf5 10.0-0–/+) 10.0-0 (10.ba6 ba6 11.0-0 Rb8=) 10...Ne4 (10...ab5 11.Bb5 Nb8 12.Nc3+=) 11.d3 (11.Nc3 Ndf6=) 11...Ng5 (11...Bf6 12.Qc2 Bb2 13.Qb2=) 12.Ng5+= Bg5 13.Bf3 (13.Nc3!?+=) 13...Nf6 (13...ab5 14.Nc3 (worse is 14.Bd5 Nb6 15.Be4 Na4–/+) 14...ba4 15.Nd5+=) 14.Nd2 (14.Nc3 Be6=) 14...Bd7 (14...Qe7 15.Qc2=) 15.Qb3 Be6 16.Qc2 (16.Be5 Qe7 17.ba6 Ra6=) 16...b6 (16...ab5 17.ab5 Qb6 18.Be2=) 17.Nb3 (better is 17.ba6!? Ra6 18.Be2=) 17...ab5–/+ 18.ab5 Rc8 (better is 18...Qd7!?–/+) 19.Nd2 (19.Ra7 Bd7=) 19...Nd7 (19...Qd7 20.Ra4=) 20.e4+= d4 21.Nc4 (21.Be2 Bf4+=) 21...Qc7 (21...Bc4 22.dc4 (worse is 22.Qc4 Ne5 23.Qb3 Nf3 24.gf3 Bf4–+) 22...Ne5 23.Bd1=) 22.Rae1 (22.Be2!?+=) 22...Ne5+= 23.Ne5 Qe5 24.g3 (24.Be2 Bd7+=) 24...f5 (better is 24...c4!? 25.Be2 Qb5 26.dc4 Bf6+=) 25.ef5 (25.h4 Bh6=) 25...Qf5 26.Bg2 (26.Be4 Qf7=) 26...c4 27.Qe2 (27.Be4 Qb5 28.Bd4 cd3 29.Qd3 Qd3 30.Bd3 Bh3+=) 27...Rce8 (27...Bf7!? 28.Bd4 cd3+=) 28.dc4 (28.Be4 Qc5 29.Qh5 Bh6 30.Qc5 bc5+=) 28...Qc5 (28...d3 29.Qe5 Qe5 30.Re5+= (30.Be5 Bc4 31.Re4 Bd5–+)) 29.Qe5 (better is 29.Qd1 Bc4 30.Re8 Re8 31.Bd4 Qb5 32.Re1+=) 29...Bf6?? (better is 29...Bc4 30.Qd4 Qd4 31.Bd4 Bf1 32.Rf1 Rb8=) 30.Qc5+- bc5 31.Rd1?? (better is 31.Re6 Re6 32.Bd5+-) 31...Bc4+= 32.Rfe1 (32.Ba3 Bf1 33.Kf1 Re5+=) 32...Bb5–/+ 33.Ba3 Re1 34.Re1 Re8 (better is 34...Rc8!? 35.Bb7 Rc7 36.Bd5 Kf8–/+) 35.Re8 (35.Bd5 Kh8 36.Re8 Be8 37.Bc5 g5=) 35...Be8 36.Bc5 Kf7 (36...Bf7 37.Kf1=) 37.Be4 (37.Bd5 Kg6=) 37...g6 (37...Bb5 38.f4= (38.Bh7? g6–+)) 38.f4 Bd7 (38...Ke6 39.Kf1=) 39.Kf2 Be6 (39...Ke6 40.Ke1=) 40.Kf3 (40.Ke2 Bc4 41.Kd2 Ke6=) 40...Bc4 41.Bc2 (41.g4 Ke6=) 41...Bd5 (41...d3 42.Bd1=) 42.Be4 (42.Ke2 Bc4 43.Bd3 Bd5=) 42...Bc4 (42...Ke6 43.Bb4=) 43.Kf2 (43.g4=) 43...d3 (43...Ke6!?=) 44.Ke3+= Ke6 45.Bd3 (45.Bb4 Bd8+=) 45...Kd5 46.Bc4 (46.Bb6 Bd3 47.Kd3 Bg7+=) 46...Kc5= 47.Bg8 h6 48.Ke4 (48.h4 Kd6=) 48...Kd6 (48...g5 49.f5=) 49.Bh7 (49.h4 Ke7=) 49...g5 50.fg5 (50.f5 h5=) 50...hg5 (50...Bg5 51.Kf3=) 51.Kf5 Bd8 52.Kg6 (52.Bg8 Kc5=) 52...Ke5 (52...Kd5 53.Bg8 Ke5 54.Bc4=) 53.Kf7 (53.Bg8 Be7=) 53...Bf6 (53...g4 54.Bd3=) 54.Kg6 (54.Bd3 Bd8=) 54...Bd8 55.Kh5 Kd4 56.Kg4 Ke3 (56...Ke5 57.Bg8=) 57.Kh3 (57.Bg6 Bc7=) 57...Kf3 (57...Be7 58.Kg2=) 58.Bg8?? (better is 58.Bf5=) 58...g4 0–1. Melzig,Ernst – Polk,Maria, 13sen.BayEM Schney, 2001.

7.Nf3 0-0 8.Be2 b6 9.0-0 Bb7 10.Qc2 Nbd7 11.d3 (11.Nc3 Re8=) 11...a5 (11...Bd6 12.Nc3=+) 12.a4 (12.ba6 Ba6 13.a4 Nb8=) 12...Rc8 13.Nbd2 Ng4 (13...Bd6 14.Nh4=+) 14.h3 Nh6 15.e4 Bf6 (15...Re8 16.Rfe1=) 16.e5+= Be7 17.Qb3 (17.d4 Re8 18.Bd3 g6=) 17...Nf5= 18.Rfe1 g6 19.Bf1 (19.Qc3 Qc7 20.Bf1 d4=) 19...Ng7 (19...Re8 20.Qc3=) 20.g3+= Re8 21.Bg2 Ne6 22.Rac1 (22.Qa2 Qc7+=) 22...Bf8= 23.Nh2 (23.h4 Bh6=) 23...Nb8 (23...Bg7!? 24.Qa2 h5=) 24.Ng4+= Bg7 25.Nf6 (25.f4 h5 26.Nf6 Bf6 27.ef6 h4+=) 25...Bf6 26.ef6 Qd6 27.Be5 Qd7 (27...Qd8!?+=) 28.h4 h5 29.Bh3 (29.Qa2 Qd8 30.Bb2 Ba8+-) 29...d4? (better 29...Qd8!?=) 30.Ne4+- Qd5 (better 30...Bd5!? 31.Qd1 Be4 32.Re4 Qd8+-) 31.Qd5+- Bd5 32.Nd6 Bb3 (better 32...Rcd8 33.Ne8 Re8+-) 33.Be6 (33.Ne8?! Re8 34.Ra1 Nd7+-) 33...Be6 34.Bd4! (34.Nc8?! Rc8 35.Bd4 Bb3+- (35...cd4?? 36.Rc8 Bc8 37.Re8 Kh7 38.Rc8+-); 34.Ne8?! Re8 35.Bf4 Nd7+-) 34...cd4? (34...Rcd8 35.Ne8 Re8+-) 35.Nc8 Rc8 (35...Nd7 36.Rc7 Nf6 37.Nb6 Rb8+-) 36.Rc8 Bc8 37.Re8 Kh7 38.Rc8 Nd7 39.Rc6 Nc5 (39...Kh6+-) 40.Rc5! bc5 41.b6 c4 42.b7 c3 (42...cd3 43.b8Q d2 44.Qf8 d1Q 45.Kg2 Qh1 46.Kh1 d3 47.Qg7) 43.b8Q c2 (43...g5 44.Qe5 c2 45.Qg5 c1Q 46.Qc1 Kg8 47.g4 hg4 48.Qh6 g3 49.Qg7) 44.Qf4 (44.Qf4 Kg8 45.Qh6 c1Q 46.Qc1 g5 47.f3 gh4 48.Qh6 hg3 49.Qg7) 1–0. DEFFM – GuestRQHR, freechess.org, 2020.

5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4).

5.e3 b6 6.Nf3 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5).

5.e3 b6 6.Nf3 Bb7 7.Be2 Bd6 8.0-0 Nbd7 9.d3 0-0 10.Nbd2 e5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d3 Bb7 10.Nbd2 e5).

5.e3 b6 6.Nf3 Bb7 7.Be2 Be7 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5 7.Be2 Be7).

5.e3 b6 6.Nf3 Bb7 7.Be2 Be7 8.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

5.e3 b6 6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3 b6).

5.e3 b6 6.Nf3 Nbd7 7.Be2 Bb7 8.d4 Be7 9.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7).

5.e3 Bd6 6.Nf3 Nbd7 7.Qb3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Qb3).

5.e3 Nbd7 6.d3 Bd6 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.d3).

5.e3 Nbd7 6.Nf3 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7).

5.e3 Nbd7 6.Nf3 Bd6 7.a4 b6 8.Nc3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Nc3 b6 8.a4).

5.e3 Nbd7 6.Nf3 Be7 7.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 Nbd7).

5.e3 Be7 6.a4 0-0 7.Nf3 a6 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

5.e3 Be7 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4).

5.e3 Be7 6.Nf3 0-0 7.d4 Nbd7 8.Nbd2 b6 9.Be2 Bb7 10.0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7 10.Nbd2).

5.e3 Be7 6.Nf3 0-0 7.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2).

5.e3 Be7 6.Nf3 0-0 7.Be2 a6 8.a4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

5.e3 Be7 6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3 Be7).

5.a4 a5 6.e3= Nbd7 7.Nf3 Be7 8.Be2 0-0 9.0-0 h6 (9...e5 10.d4=) 10.d3 b6 11.Nbd2 Bb7 12.Rc1 (12.Re1 d5=) 12...Qc7 13.d4 Rfe8 14.Ne1 Nf8 (14...cd4 15.ed4 e5 16.Nd3=) 15.Bf3 Rab8 16.Bb7 Rb7 17.Ndf3 N8d7 18.Nd3 Ne4 19.Qc2 Bf6 20.Nf4 Ng5 21.Ng5 Bg5 22.Nh5 g6 23.f4 (23.Ng3 Bf6+=) 23...gh5 (better is 23...Bh4 24.Ng3 Bg3 25.hg3 cd4 26.ed4 Rbb8=) 24.fg5+- hg5? (24...Re7 25.gh6 cd4 26.ed4 Ra7+-) 25.Qf2 (25.Rf7 Kf7 26.Qh7 Kf8 27.Rf1 Nf6 28.Rf6 Qf7 29.Qh8 Ke7 30.Rf7 Kf7 31.Qh7 Kf8 32.Qb7 cd4 33.Bd4+-) 25...Nf8 (better is 25...Re7!?+=) 26.dc5+/– dc5 (26...Qc5 27.Bd4 Qf5 28.Qg3+/–) 27.Qf6+- Ng6?? (better is 27...e5 28.Qg5 Ng6 29.Qh5 Qd6+-) 1–0. Niephaus,Friedel – Krips,Sabine, Hofheim (Women), 1995.

5.a4 d5 6.e3=+.

5.d4 cd4 6.Bd4 e5=+.

5.e3 Be7 6.Be2 d5 7.cd5 ed5 8.Nf3 0-0 9.0-0 b6 (9...Bf5 10.d3=) 10.a4 (10.Nc3 a6=) 10...a6 11.d4 c4 12.Ne5 ab5 13.ab5 Ra1 14.Ba1 Nfd7 (14...Re8 15.Nc3=+) 15.Bf3= Bb7 (better is 15...Qe8!?=) 16.Nc3 (16.Nc4 dc4 17.Bb7 Re8+/–) 16...Nf6 (16...Ne5 17.de5 Re8 18.Nd5+/–) 17.Re1 (17.Nc4 dc4 18.Bb7 Re8+-) 17...Re8 (17...Bc8 18.e4 de4 19.Ne4 Ne4 20.Be4+/–) 18.Qb1 (18.Nc4 Ne4 19.Ne5 Bd6+/–) 18...Nbd7 (18...Bc8 19.Qc2=) 19.e4 (better is 19.Nc4!? Qc7 20.Nd2+/–) 19...de4 20.Ne4 Ne4 21.Be4 Be4 22.Qe4 ½–½. Dopper,Johan – Pannekoek,Jan, 1994.

5.a4 b6 6.e3 d6 7.Nc3 (7.Qf3 d5=) 7...Bb7 (7...a6 8.Nf3=) 8.Nf3 0-0 9.h3 (9.Be2 d5=) 9...h6 (9...a6 10.Be2+=) 10.Be2= Nbd7 (10...a6 11.0-0=) 11.d4 (11.0-0 a6=) 11...cd4 12.ed4 (12.Qd4 Rc8+=) 12...Rc8+= 13.0-0 (13.d5 ed5 14.cd5 Rc5+=) 13...Bf3 14.Bf3 Rc4 15.Bc6 (15.d5 Ne5+=) 15...Nb8 (15...d5–/+) 16.Bb7? (better is 16.d5!?+=) 16...Qc7–+ 17.Bf3 (17.Qf3 d5 (17...Rd4?! 18.Ne4 Rc4 19.Rac1–/+) 18.Ba8 a6–+) 17...Rc3 18.Bc3 Qc3 19.Rc1 Qb4 (19...Qa5 20.d5 e5 21.Rc7–+) 20.Rc7 (20.d5 e5–+) 20...Nbd7 (20...d5 21.Ra7 Nfd7 22.Qd3–+) 21.Bc6 Rd8 (21...d5 22.Ra7 Rd8 23.Qd3–/+) 22.Ra7 (22.d5 Bf8–/+) 22...Kf8 (22...d5 23.Qd3–/+) 23.Qd3 d5 24.Rb1 Qd6 25.a5 (25.Ra1 Nb8 26.Bb7 Kg8–/+) 25...ba5 26.Ra5 Nb6 (26...Nb8 27.Ba8–/+) 27.Ra6 (27.Rba1 Ne4–/+) 27...Rb8–+ 28.Rba1 Kg8 29.f3 (29.Ra7!?–+) 29...Nh5 (better is 29...Qg3–+) 30.Ba8? (30.Ra7–+) 30...Qg3 (30...Ra8?! 31.Ra8 Na8 32.Ra8 Bf8 33.b6+=) 31.Bc6 (31.Qd2 Bd6 (31...Na8?! 32.Ra8 Bd6 33.Rb8 Bb8 34.Ra8–+; 31...Ra8?! 32.Ra8 Na8 33.Ra8 Kh7 34.Qc2 g6 35.Qf2–+) 32.Kf1 Qh2–+ (32...Na8?! 33.Ra8 Qh2 34.Rb8 Bb8 35.Ra8–+; 32...Ra8?! 33.Ra8 Na8 34.Ra8 Kh7 35.Qc2 f5 36.Qc8–+)) 31...Nf4 32.Qc2 (32.Qd2 Nc4 33.Qa2 Ne3–+) 32...Nh3 (better is 32...Bf6 33.Kh1 Bd4 34.R6a2–+) 33.Kf1 (33.Kh1 Ng5–+) 33...Ng5 (better is 33...Qh2 34.Qc3 Qg1 35.Ke2 Nf4 36.Kd2 Qg2 37.Kd1–+) 34.Rb6 (34.Qf2 Qf4 35.Ke2–+) 34...Rb6 35.Ra8 (35.Qf2 Qf4 36.Ke2–+) 35...Bf8 (35...Rb8 36.Qf2 Qf4 37.Rb8 Qb8 38.Qb2–+) 36.Qc5?? (36.Rf8 Kf8 37.Qc5 Kg8 38.Qb6–/+) 36...Qc7 (better is 36...Rb8 37.Rb8 Qb8–+) 37.Qf8+= Kh7 38.Qh8 Kg6 39.Rg8 f6 40.g4 Rc6 41.bc6 Qa7 0–1. DEFFM – kaskelotti, freechess.org, 2016.

5.a4 d5 6.e3 b6 7.Nf3 Nbd7 8.Bd3 Qc7 9.0-0 Bb7 10.Re1 e5 11.Ne5 Ne5 12.f4 Nd3 13.Rf1 Nb2 14.Qc2 Nc4 15.Qc4 dc4 0–1. guest1151 – guest101, ICC, 1999.

5.Qc2 0-0 6.e3 d5 7.d3 dc4 8.dc4 Nbd7 9.Bd3 e5 10.Nd2 h6 11.Ne2 b6 12.Rd1 Bb7 13.0-0 a6 14.a4 ab5 15.ab5 Bd6 16.Ng3 e4 17.Nde4 Bg3 18.fg3 Ne4 19.Be4 Be4 20.Qe4 Qc8 21.Qg4 f6 22.Qe6 Rf7 23.Rd5 Ne5 24.Qb6 Nc4 25.Qc5 Qc5 26.Rc5 Nb2 27.b6 Nd3 28.Rc7 Rb8 29.Rd1 Ne5 30.Rf7 Kf7 31.Rd6 Nc4 32.Rd7 Kg6 33.b7 Na5 34.h4 Rb7 35.Rd4 Nc6 36.Rc4 Ne5 37.Rc3 Rb1 38.Kf2 Rb2 39.Kg1 Rb1 40.Kh2 Rb2 41.Kh3 Rf2 42.g4 h5 43.Kg3 Re2 44.gh5 Kh5 45.Kf4 Ng4 46.g3 Ne5 47.Rc5 1–0. ArgosZgZ – arash_s, lichess.org, 2018.

5.e3 0-0 6.Nf3 b6 7.Qc2 (7.d4 a6=) 7...Bb7 (7...a6 8.Ng5 Re8 9.Bd3+=) 8.Be2 (8.Ng5 g6=) 8...d6 (8...a6 9.Ng5 Re8 10.0-0=) 9.0-0 (9.Nc3 a6=) 9...Nbd7 (9...a6 10.Nc3=) 10.Nc3 Qc7 (10...a6 11.Rfb1=) 11.h3 (11.Rfd1 Ne5=) 11...d5 (11...Ne5 12.Ne5 de5 13.d3=) 12.Rac1 (12.cd5 ed5 13.Nh4 a6=) 12...Ne4 (12...dc4 13.Bc4 Rfd8 14.Be2=) 13.d3 (13.cd5 ed5 14.a4 Rfe8=) 13...Nd6 (13...Nc3 14.Bc3 a6 15.cd5 ed5 16.Qb2=) 14.Nb1 (14.Rfe1 dc4 15.dc4 a6=) 14...dc4 15.dc4 Ne4 (15...Be4 16.Qb3=) 16.Nbd2 (16.Rfd1 Rfd8=) 16...f5 (16...Nd2 17.Nd2 a6 18.a3=) 17.Rfd1 Nd6 (17...a6 18.Ne4 Be4 19.Qb3=) 18.Ne5 Rad8 (18...a6 19.Bf3=) 19.Ndf3 (19.Nd3 Bf6=) 19...Ne5 (19...Be4 20.Qa4=) 20.Ne5 (20.Be5 Bf6 21.Bf6 Rf6+=) 20...Nf7 (20...Be4 21.Bd3=) 21.Nf7 Kf7 22.f4 (22.Bd3 Kg8=) 22...Bf6 (22...Be4 23.Bd3 Bd3 24.Rd3 Rd3 25.Qd3=) 23.Bf3 (23.Bh5 g6 24.Bf6 Kf6 25.Qc3 e5=) 23...Bf3 24.gf3 Qe7 (24...Bb2 25.Qb2 Kg8=) 25.e4 (25.Bf6!? Qf6 26.Rd8 Rd8 27.Rd1=) 25...fe4 (25...Bb2 26.Qb2 Qh4 27.Qh2–/+) 26.fe4+= Bd4 (26...Bb2 27.Qb2 Qh4 28.Qc3+=) 27.Bd4 cd4 28.c5 bc5 (28...Kg8 29.c6=) 29.Qc5 Qh4 30.Rd3 (30.Qg5!? Qg5 31.fg5=) 30...Kg8 (30...Qf4?? 31.Rf1 Qf1 32.Kf1 Ke8 33.Ke2+-) 31.Qe5 (31.Qg5 Qf4 32.Qf4 Rf4–/+) 31...Rf4 32.Rd2?? (better is 32.Qe6 Kh8 33.Qe5–/+) 32...Re4 33.Qc5 (33.Qc7 Re1 34.Kh2–+) 33...Re1 (33...Re1 34.Re1 Qe1 35.Kg2 Qd2 36.Kh1 Rf8 37.Qf8 Kf8 38.b6 ab6 39.h4 d3 40.h5 Qe2 41.h6 d2 42.hg7 Kg7 43.Kg1 d1Q) 0–1. Eberl,Hans Christian – Fluegge,Gerd, corr DDR–Cup, 1981.

5.e3 0-0 6.Nf3 b6 7.Be2 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0).

5.e3 0-0 6.Nf3 b6 7.Be2 Bb7 8.0-0 d5 9.d4 Nbd7 10.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4 Nbd7 10.d4).

5.e3 a6 6.a4 (6.Nf3 ab5 7.cb5 d6=) 6...0-0=+ 7.Be2 ab5 (7...d5 8.d4=+) 8.ab5= Ra1 9.Ba1 d5 10.d4 Ne4 11.Nf3 (11.Nc3 Qa5 12.Qa4 Bd8 13.Qa5 Ba5 14.dc5 Nc3 15.Bc3 Bc3 16.Kd1 Bb4–+) 11...cd4 (11...Qa5!? 12.Nbd2 dc4=+) 12.Bd4= (12.Qd4 Qa5 13.Bc3 Nc3 14.Nc3 Nd7–+) 12...Bb4 13.Kf1 dc4 14.Bc4 Nd6 (14...Nd7 15.Qc2 Nef6 16.Kg1=) 15.Bd3 Qa5 16.h4 (better is 16.Qc2!?=) 16...Bd7 (better is 16...Nb5 17.Be5 Nc6–/+) 17.Bh7?? (17.Ng5 Bb5 18.Nh7–+) 17...Kh7–+ 18.Ng5 (18.b6 f6 19.Qd3 Kg8–+) 18...Kg8 19.Qh5 (19.Kg1 Qb5 (< 19...Bb5 20.Qc2 Nf5 21.g4–+; 19...Nb5?? 20.Qh5 Rd8 21.Qf7 Kh8 22.Qg7) 20.Nc3 Bc3 21.Bc3 Nf5–+) 19...Bb5 20.Kg1 Bd3 21.Qg4 Qf5 22.Qg3 f6 23.f3 Bb1 24.f4 fg5 25.hg5 Rc8 26.Rh5 Rc1 27.Kh2 Be1 28.Qf3 Be4 (29.Qh3 Qh3 30.Kh3 Bf5 31.Kh2 Ne4–+) 0–1. Mohring,Norbert – Bock,Andreas, SEM–ch VT2 Merzig, 1996.

5.e3 d5 6.Nf3 Bd6 7.a4 a5 8.Na3 b6 9.d4 cd4 10.Nd4 (< 10.ed4 Bb4 11.Nd2 Ne4–/+) 10...Bb4 11.Ke2 e5 12.Ndc2 Qe7 13.cd5 0-0 14.Nb4 ab4 15.Nc2?? (15.Nc4 Nbd7 16.d6 Qe6+/–) 15...Qc5 (better is 15...Rd8!?=+) 16.Be5+= Nd5 17.Qd3 Nc3 18.Bc3+/– bc3 19.g3 Bf5 20.Qd1? Be4?? 21.Rg1? Qf5?? 22.Nd4= Qd5 23.Ke1 Nd7 24.Be2 Ne5 25.f4 Nc4 26.Kf2 Rfe8 27.Bc4 Qc4=+ 28.Qe2 Bd3 29.Qa2 Qc5 30.Rac1 Re3?? 31.Ke3+= Bc4? 32.Qc2 Re8= 33.Kf3 Bd5 34.Kg4 Qd4 35.Qc3?? h5?? 36.Kh5?? Qf2?? 37.Rgf1?? Qh2 38.Kg4 f5! 39.Kf5 Qh5 0–1. chessleon – Rudolf, internet, 2007.

5.c4 d5 6.e3 c5 (6...Bd6 7.Nf3+=) 7.Nf3 Nc6 8.cd5 ed5 9.Bb5 Bd7 10.Qa4 Nb4 (10...Rc8!?=) 11.Bf6+= gf6 12.0-0 (12.a3 Nc2 13.Qc2 Bb5+=) 12...Rb8 13.Bd7 Qd7 14.Qd7 (14.Qd1 Rg8+=) 14...Kd7= 15.Nc3 Ke6 16.d4 c4 17.e4 de4 18.Ne4 f5 (18...Nd3 19.Rfd1=) 19.Nfg5 Ke7 20.Nc5 (20.Nd6 Kd6 21.Nf7 Ke6 22.Nh8 Bg7 23.Rae1 Kf6+=) 20...Rd8 21.Rab1 Kf6 (worse is 21...Na2 22.Rb7 Kf6 23.Rf7 Kg6 24.Nce6+/–; 21...Rd4?! 22.Nf3 Rd5 23.Rb4 Rc5 24.Rb7 Kf6 25.Ra7=) 22.Rb4 Rd4 23.Nf3 Bc5 24.Rb7 (24.Ra4 Rf4–/+) 24...Rd5 25.Rc1 Bb6 26.Kf1 Rc8 27.Rc3? (27.Rc2 c3–+) 27...Ra5?? (better is 27...Rd1 28.Ke2 Ra1–+) 28.a3 Rb5 29.Nd2 Rb2 30.Rc4? (better is 30.Nc4!? Rf2 31.Ke1–/+) 30...Rd8–+ 31.Rc6 Kg7 32.Rcb6 Rb6 (better is 32...ab6!? 33.Nf3 Rd1 34.Ne1 Ra1–+) 33.Rb6 ab6 (33...Rd2 34.Rb7+/–) 34.Ke2 Kf6 35.f4 Rd4 36.g3 Ra4 37.Nb1 Ke6 38.Kd3 Kd6 (38...h5 39.Ke3–+) 39.Kc2 Kc5 40.Kc3 b5 41.Kd3 Ra6 42.Ke3 (42.Kc3–+) 42...Kc4 43.h4 (43.Ke2 Kb3 44.Nd2 Ka3–+) 43...Kb3 (43...Re6 44.Kd2–+) 44.Kd4 Ra3 0–1. Novikov,Konstantin Ivan – Bragin,Sergey S, Tula Club–ch op, 2000.

5.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.bc6 bc6).

5.c3 d5 6.e3 Be7 7.Bb5 0-0 8.Nf3? (8.Ba3 e5–/+) 8...a6?? (better is 8...Qb6 9.c4 a6–+) 9.Bd3 b5 (9...e5 10.Be2–/+) 10.0-0 (10.a4 ba4 11.Qa4 Qc7–/+) 10...Bb7 11.Bc2 Rc8 12.d4 b4 (12...Qc7 13.a4=+) 13.cb4 Nb4 14.Bb3 Qc7 15.Na3 Rfe8 16.Ne5 (16…Bd6 17.Qe2=+). pinecrest1981 – OutOne, Caissa.com, 2004.

5.e3 b6 6.Nf3 Bb7 7.d4 Be7 8.Nbd2 0-0 9.c4 d5 10.Bd3 (10.cd5 Nd5 11.Be2 Rc8=+) 10...dc4 11.Nc4 h6 (11...Rc8 12.a3=+) 12.0-0 Nb4 13.Be2 Rc8 14.a3 Nbd5 15.Rc1 Ne4 16.Bd3 Nd6 (16...Ndf6 17.Nfe5=) 17.Nce5 Rc1 18.Qc1 Qc7 (18...Qa8 19.Qa1=) 19.Qc7+= Nc7 20.Rc1 Na8 (20...Rc8 21.Nc6 Bc6 22.Rc6+=) 21.a4 (21.Nc6 Bc6 22.Rc6 Rb8+/-) 21...Rc8+= 22.Rc8 Nc8 23.Nd2 Nc7 24.Be4 Be4 25.Ne4 Kf8 26.Nc6 Ke8 27.Kf1 f6 28.Ke2 Nd5 29.g3 (29.Ne7 Nce7 30.Ba3 Kd7=) 29...Kd7 (29...Bf8 30.Nb8=) 30.Ne7= Nce7 31.Ba3 (31.Nd2 Nc7=) 31...Nc6 (31...f5!? 32.Nd6 Nc3 33.Kd3 Na4-/+) 32.Kd3 h5 33.Kc4 a6 34.Nc3 (34.h4=) 34...b5 (better 34...Na5!? 35.Kd3 g5=) 35.ab5+/- ab5 (35...Na5 36.Kd3 Nc3 37.Kc3 ab5 38.Bf8+=) 36.Nb5 g5 37.e4 Nb6 38.Kd3 f5 (38...g4 39.Nc3+/-) 39.f3 (39.ef5 ef5 40.Nd6 Ke6+/-) 39...g4 40.fg4 hg4 41.ef5 (41.Nd6 fe4 42.Ke4 Nd5+/-) 41...ef5 42.Ke3 (42.Nc3 Ke6+/-) 42...Ke6 (42...Nd5 43.Ke2+/-) 43.Nc7 Kf6 (43...Kd7 44.Kf4 Kc7 45.Bc5 Nd5 46.Kf5 Ne3 47.Kf4+/-) 44.Bc5+- Nc4 45.Kd3 Nb2 46.Kc2 Nc4 47.Kc3 Ne3? (47...N4a5+-) 48.Kd3?? (better 48.d5 Nd5 49.Nd5 Ke5 50.Nf4+-) 48...Nf1+/- 49.Nd5 Kg5 (49...Kg6 50.Nf4 Kf6 51.d5 Ne5 52.Kd4 Nf3 53.Kc4 Ne5 54.Kb5 Nh2 55.d6+/-) 50.Nf4 (50.Kc4 Kg6+/-) 50...Nh2 51.Ne6 (51.d5 Ne5 52.Kc3 Nf1+=) 51...Kf6+= 52.Nf4 Nf3 Exerts pressure on the isolated pawn (52...Kg5 53.d5 Ne5 54.Kc3+=) 53.Ke3 Kg5 (better 53...Na5=) 54.Kf2?? (better 54.d5 Nce5 55.d6+=) 54...Ncd4 55.Bd4 Nd4 56.Ke3 Nf3 57.Kf2 (57.Nd5 Ne5-/+) 57...Ne5 (57...Nd2 58.Kg2-+) 58.Ne6 (58.Ke3!?-/+) 58...Kf6-+ 59.Nf4 Ng6 (59...Nc4 60.Nd3-+) 60.Nd5 (60.Nd3 Nf8-+) 60...Ke5-+ 61.Nf4?? (better 61.Nb4-+) 61...Nf4 62.gf4 Kf4 63.Kg2 g3 64.Kg1 Kg4 (64...Kf3 65.Kf1 g2 66.Ke1 Ke3 67.Kd1 Kd3 68.Kc1 g1Q 69.Kb2 Qb6 70.Kc1 f4 71.Kd1 Qg1) 65.Kg2-+ f4 66.Kg1 f3 67.Kf1 Kf4 68.Kg1 (68.Ke1 Ke3 69.Kd1 f2 70.Kc1 f1Q 71.Kc2 Qd3 72.Kb2 g2 73.Ka2 g1Q 74.Kb2 Qgb1) 68...Ke3 Black prepares f2 69.Kf1 f2 (69...g2 70.Kg1 Ke2 71.Kh2 Kf2 72.Kh3 g1Q 73.Kh4 Ke3 74.Kh5 f2 75.Kh6 f1Q 76.Kh5 Qh3) 70.Kg2 Ke2 71.Kh3 (71.Kg3 f1Q 72.Kg4 Qf6 73.Kg3 Qg5 74.Kh3 Kf3 75.Kh2 Qg2) 71...f1Q 72.Kg4 (72.Kg3 Qf2 73.Kg4 Qf6 74.Kh5 Qg7 75.Kh4 Kf3 76.Kh5 Kf4 77.Kh4 Qg4) 72...g2 73.Kh3 g1Q 74.Kh4 Qf4 75.Kh5 Qfh2 (75...Qgg4) 0-1. cipiripi (2445) - E_Kudashoff (2445), Rated Blitz game, lichess.org, 2016.

5.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.bc6 Nc6).

5.Nf3 Be7 6.e3 0-0 7.Be2 Qb6 8.Ba3 Ba3 9.Na3 d5 10.0-0 a6 (10...Ne4 11.d4=) 11.c4 dc4 (11...Qc5 12.cd5 Na5 13.Qa4+=) 12.Nc4+= Qc7 13.d4 b5 14.Nce5 Ne5 (14...Bb7 15.Rc1 Qd6 16.Bd3=) 15.Ne5 Bb7 16.Rc1 Qb6 (16...Qa5 17.Qb3=) 17.Bf3 Rac8 18.Bb7 Qb7 19.Qf3 (19.Qb3 Nd7=) 19...Qf3 20.gf3 Nd5 21.Nd7 (21.Rc5 f6 22.Nc6 Kf7=) 21...Rfd8+= 22.Nc5 Rd6 23.Na6 (23.Rfe1 Rdc6+=) 23...Nc3–/+ (23...Nc3 24.Nc5 Ne2 25.Kg2 Nc1 26.Rc1 e5–+) 0–1. Adamowski,Andrzej – Rosikiewicz,Wieslaw, corr 1AMM Poland, 1991.

5.c4 d5 6.Nf3 Nbd7 7.Be2 Bd6 8.d4 b6 9.Nbd2 0-0 10.0-0 Bb7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d4 Bb7 10.Nbd2 a5).

5.Nf3 b6 6.c4 Bb7 7.Nc3 Be7 8.Be2 d5 9.Na4 Nbd7 10.Qc2 Qc7 11.h3 h6 12.d3 0-0 13.Rc1 e5 14.cd5 Nd5 15.0-0 Nb4 16.Qb3 (better 16.Qb1 Bd5 17.Nc3+=) 16...Rfe8?? (better 16...Bd5 17.Rc4 Bc4 18.Qc4 Qd6=) 17.e4+- Bf6 18.a3 Nf8 (better 18...Qd6+-) 19.ab4 ab4 20.Nd2 (20.Qb4 Ne6 (20...cb4?? 21.Rc7 Be4 22.de4 Ra4 23.Bc4+-) 21.Qc4 Nf4+-) 20...Ne6 (better 20...Bg5 21.Rfd1 Bc8+-) 21.Nc4 Nf4 22.Rfe1 Rab8 (22...Ne2 23.Re2 Re6 24.Ncb6 Rb6 25.Rc5+- (25.Nb6?! Qb6 26.Rec2 Be7+/-)) 23.Bf1 (better 23.Ncb6 Be7 24.Nc4+-) 23...Bc8 24.Ne3 Be6 25.Qc2 Red8 26.Kh2 Qd7 27.Nc4 Bg5? (27...Qb5 28.Ncb6 Rb6 29.d4+/-) 28.Ra1 (better 28.Be5 Qb5 29.Bb8 b3+-) 28...f6 29.Bc1 (29.Ncb6?! Qc7+-) 29...Bf7 (29...Qb5!? 30.Bf4 ef4+/-) 30.Bf4+- Bf4 (better 30...ef4 31.Ncb6 Qc7+-) 31.g3 Bg5 32.Nab6 (better 32.h4!? Bh4 33.gh4 Qb5+-) 32...Qb5 33.Nd5! h5 (33...Bd5 34.ed5 Passed pawn) 34.h4 Bh6 35.Ra7 Ra8? (35...b3 36.Qe2 Bd5 37.ed5 Rd5+-) 36.Ra8 (better 36.Nd6! b3 37.Qc3 Qb8 38.Ra8 Qa8 39.Nf7 Kf7 40.Qb3 Rb8+-) 36...Ra8 37.Nc7 (better 37.Nd6!? Qa5 38.Nf7 Kf7+-) 37...Qa4 38.Qa4 Ra4 39.Nd5 Ra2 40.Kg1 g6?? (better 40...Kh7+/-) 41.Nf6+- Kg7 42.Nd5 Kh7 (42...Kg8 43.Ne5 Bd2 44.Rb1+-) 43.Ne5 Be6 44.Nc4 (44.d4!? Bg7+-) 44...Bg7 45.Nf4 Bf7 46.e5 b3 47.Rb1 Bc4 48.dc4 b2 (48...Be5 49.Rb3 Bf4 50.gf4 Rd2+-) 49.Nd3 Be5 (49...Kg8 50.f4+-) 50.Ne5 1-0. bjoernsen (2445) - dudosoaspecto (2570), Rated blitz game, lichess.org, 2021.

5.f4 b6 6.Nf3 Bb7 7.Be2 d6 8.0-0 Be7 9.c4 0-0 10.Nc3 Nbd7 11.Qc2 d5 12.Na4 dc4 13.Bc4 Ne4 14.Bd3 f5 15.Bc4 Bd5 16.Qb3 Nef6 (16...Bc4!? 17.Qc4 Kf7+=) 17.Ng5+/- Qb8 (better 17...Qe8!? 18.Ne6 Bc4 19.Qc4 Qf7+/-) 18.Ne6+- Be6 19.Be6 Kh8 20.Bf5 Bd6 21.Rf3 Qc7 22.Rh3 c4? (22...Rad8+-) 23.Qc2 g6 (23...Rac8 24.Bh7 Rf7 25.Rc1+-) 24.Bg6 (24.Bg6 Kg8 25.Bh7 Kf7 26.Bf5+-) 1-0. pcmvr - mgilbert (2100), net-chess.com, 2021.

5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 (7...d5 8.Qf3=) 8.c4 0-0 9.Nf3 d5 10.Be2 Nbd7 11.0-0 dc4 12.Bc4 Nb6 13.d3 Nfd5 14.Nbd2 Bf6 (14...Nb4 15.Nb3=) 15.Ne4 Qe7 16.Ne5 (16.Bd5 Nd5 17.d4 cd4 18.Nf6 Nf6 19.Qd4 Rd8+=) 16...Rd8 17.Qe2 Be5 18.Be5 f6 19.Bb2 e5 (19...f5 20.Ng3+=) 20.Ba3+= Nc4 21.dc4 (21.Bc5 Nd6=) 21...Nb4 22.Bb4 cb4 23.c5 Be6 24.Qb2 (24.Rd1 Rc8+=) 24...b3 (24...b6 25.c6=) 25.Qc3 (25.b6 Qe8+=) 25...Qc7 26.h3 f5 (26...Bd5 27.Nd2 Qd7 28.b6=) 27.Ng5 (27.Nd2 b2=) 27...Bd5= 28.e4 fe4 29.Re1 Qe7 (29...Qd7 30.Qe5 Re8 31.Qd4=) 30.Ne4+= Rf8 (30...Be4 31.Re4 Rd5 32.c6 bc6 33.Qb3+=) 31.Re2+/– Qe6 32.Ng3 (32.Nd6 Qg6 33.f3 b6 34.Re5 Qc2+=) 32...Qf6 (32...Re8 33.Re1+=) 33.Nf1 (better is 33.f3!?+/–) 33...e4= 34.Qf6 gf6 35.Rd2 Be6 36.Ng3 f5 37.Ne2 Rc8 38.Nd4 (better is 38.c6!? bc6 39.Nd4+=) 38...Rc5–+ 0–1. Labahn,Wolfgang – Krause,P, corr ch D teams, 1991.

5.a4 d5 6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 a6 6.a4).

5.Nf3 g6 6.Nc3 Bg7 7.a4 0-0 8.Be2 b6 9.0-0 a5 10.d4+= d6 11.dc5 dc5 12.Qd8 Rd8 13.Rad1 Re8 14.Ne5 Ra7 15.Nc4 Nbd7 16.Bf3 Bb7 17.Bc6 Re7 18.Nd6 Bc6 19.bc6 Ne5 20.Nc8 Nc6 21.Rd6 Red7 22.Rc6 (22.Rc6 Rac7 23.Rc7 Rc7 24.Nd6+- (24.Nb6?! Rb7+/–)) 1–0. pcmvr – vanadis (2425), net–chess.com, 2009.

5.c4 Bb7 6.Nf3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4).

5.c4 Bb7 6.Nf3 d5 7.d4 Nbd7 8.Nbd2 Bd6 9.Be2 0-0 10.0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d4 Bb7 10.Nbd2).

5.Be2 Bb7 (5...d5 6.Nf3 Bd6 (6...a6 7.Nc3 Bd6 8.ba6 Ba6 9.Nb5 Be7=) 7.Be5 Be5 8.Ne5 Nbd7 9.Nd7 Bd7=; 5...a6 6.Nf3 d5 7.0-0 Bd6 8.a4 0-0 9.Na3 Nbd7=) 6.Bf3 (6.Nf3 d5 (6...Be7 7.0-0 0-0 8.c4 a6 9.d4 d5=; 6...a6 7.Nc3 Be7 8.d4 cd4 9.Nd4 0-0=; 6...Bd6 7.0-0 a6 8.Nc3 0-0 9.Rb1 ab5=; 6...Qc7 7.0-0 Be7 8.d4 cd4 9.Nd4 0-0=) 7.0-0 Bd6 8.Be5 0-0 9.d4 a6=) 6...d5 7.c4 (7.Ne2 Bd6 8.d3 0-0 9.c4 Nbd7+=) 7...Nbd7 (7...Be7 8.Ne2 Qd7 9.cd5 ed5+=) 8.Ne2 (8.cd5 ed5 9.d4 Bd6=) 8...Qc7 (8...e5 9.Ng3 a6=) 9.cd5 ed5 (9...Bd5=) 10.0-0 Bd6 11.g3 0-0 12.d4 c4 13.a4 a6 (13...Rfe8 14.Nbc3=) 14.Nbc3= Rfc8 15.Qc2 ab5 16.Nb5 Qc6 17.Nec3 Nb8 (17...Bb4!?=) 18.e4+= de4 (18...de4 19.Nd6; 18...Ne4 19.Nd6) 19.Ne4!+/– Ne4 20.Be4 Qe4 21.Qe4 Be4 22.Nd6 c3 23.Bc1 Nc6 24.Ne4 (worse is 24.Nc8 Rc8 25.Be3 c2+=) 24...Nd4 25.Be3 Nc2 26.Rac1 (worse is 26.Bb6 Na1 27.Ra1 c2+=) 26...Ne3 27.fe3 c2 28.Rf2 Ra4 29.Rfc2 Rc2 30.Rc2 h6 31.Nd6 f6. Bulcourf,Carlos – Dickau,Daniel, Olivos VALLE, 1993.

5.Nf3 a5 6.Be2 Bb7 7.c4 d5 8.0-0 Nbd7 9.Qc2 Bd6 10.d3 Qc7 11.h3 dc4 12.Qc4 0-0-0 (12...0-0 13.Qh4=) 13.e4 Ne5 14.Ne5 Be5 15.Be5 Qe5 16.Nc3 Rd4 17.Qb3 g5 18.Rae1 h5 19.Qc2 g4 20.f4 gf3 21.Rf3 Qg5 (21...Ng4 22.g3 (22.hg4 hg4 23.Re3 Qh2 24.Kf2 f5=+) 22...Nh6 23.Bd1=+) 22.Ref1 Rg8 23.R1f2 Rg6 24.Bf1 Nd7 (better 24...Rd6!?=) 25.Ne2 Ne5?? (better 25...Rd6 26.Rf7 e5+/-) 26.Nd4+- Nf3 27.Nf3 Qg3 (27...Qe3 28.Kh1 Qf4 29.Nh2+-) 28.Kh1 (better 28.d4!? Qc7+-) 28...f5 (28...Kb8 29.Qd2 f5 30.d4 fe4 31.dc5+-) 29.Re2 (29.ef5 ef5 30.d4 Be4+-) 29...fe4 (29...Kb8 30.Qb2+-) 30.de4 Rf6 31.Qc3 e5 32.Qe1 Qf4 33.Qd2 (33.Re3 Rf8+-) 33...Qg3? (33...Be4 34.Qf4 Rf4+- (34...ef4?? 35.Re4 Kc7 36.Re5+-)) 34.Re3 Rf4 (34...Qf4+-) 35.Qd6 Re4 (35...Qg7 36.Qb6 Qe7 37.Rc3+-) 36.Qe6 Kb8 37.Re4 Be4 38.Qe5 (38.Qb6 Ka8 39.Qd8 Kb7 40.Qd7 Kb6 41.Nd2 Qh3 42.Qh3+-) 38...Qe5 39.Ne5 Kc7 40.Kg1 Bd5 41.a3 Kd6 42.Nc4 Bc4 43.Bc4 Ke5 (43...h4 44.Kh2 Ke5 45.g3+-) 44.Kf2 (44.h4 Kf6+-) 44...Kd4 45.Bf7 h4 46.g3 hg3 47.Kg3 c4 (47...Ke5 48.Bc4 Kd4 49.h4+-) 48.h4 c3 49.Bg6 Ke5 50.h5 Kf6 51.Bc2 (51.Kf3 Kg5+-) 51...Kg7 (51...Kg5 52.Bd1 Kh6 53.Kf2+-) 52.Kg4 Kh6 53.Kh4 Kg7 54.Kg5 Kh8 55.Kg6 Kg8 56.h6 Kh8 57.h7 (57.Kf7 a4 58.Ke8+- (58.Ba4?! c2 59.Bc2=)) 57...a4 58.Kf5 (58.Ba4?! c2 59.Bc2=) 58...Kh7 59.Ke5 (worse 59.Ba4 Kg8 60.Ke4 Kf7+-) 59...Kg7 60.Kd6 Kf6 61.Kc6 Ke5 62.Kb6 Kd4 63.Kc7 Ke3 64.Ba4 Kd2 65.b6 Kc1 66.b7 Kb2 67.b8Q Kc1 68.Qb3 (68.Qh8 Kd2 69.Qd4 Ke2 70.Bd1 Kf1 71.Qf4 Kg2 72.Qf3 Kg1 73.Bb3 c2 74.Qg3 Kf1 75.Bc4) 68...Kd2+- 69.Qc2 Ke3 70.Qc3 Kf4 71.Qc4 (71.Qd4 Kf5 72.Bd7 Kg5 73.Qe5 Kg6 74.Bf5 Kg5 75.a4 Kh4 76.Qf4 Kh5 77.Qg4 Kh6 78.Qg6) 71...Ke3 72.Qc5 Kd3 73.Bc6 (73.Qe5 Kd2 74.Qd4 Ke2 75.Bd1 Ke1 76.Bf3 Kf1 77.Qd2 Kg1 78.Qg2) 73...Kd2 74.a4 Ke2 (74...Kd3 75.a5 Ke2 76.Qc3 Kf2 77.Qf3 Ke1 78.Qe3 Kf1 79.Bd7 Kg2 80.Bh3 Kh2 81.Qf3 Kg1 82.Qg2) 75.a5 (75.Qd4 Kf1 76.Qd2 Kg1 77.Qg2) 75...Kf1 (75...Kd3 76.a6 Ke2 77.a7 Kd2 78.a8Q Kd3 79.Qaa3 Ke2 80.Qae3 Kd1 81.Bf3) 76.a6 (76.Qc2 Ke1 77.Bf3 Kf1 78.Qe2 Kg1 79.Qg2) 76...Ke1 (76...Ke2 77.a7 Kd2 78.a8Q Kd3 79.Qaa3 Ke2 80.Qae3 Kd1 81.Bf3) 77.a7 Kd2 (77...Ke2 78.a8Q Kd3 79.Qaa3 Ke2 80.Qae3 Kd1 81.Bf3) 78.a8Q Kd1 (78...Kd3 79.Qaa3 Ke2 80.Qae3 Kd1 81.Bf3) 79.Qd8 (79.Qd8 Ke2 80.Qc2 Ke3 81.Qdd2; 79.Qa2 Ke1 80.Qg1) 1-0. bjoernsen (2330) - dabee (2440), Rated blitz game, lichess.org, 2018.

5.Nf3 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5).

5.Nf3 Bb7 6.c4 d5 7.a4 Nbd7 8.d3 Bd6 9.Nbd2 0-0 10.Be2 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4 b6 9.d3 Bb7 10.Nbd2).

5.Nf3 Bb7 6.c4 d5 7.a4 Nbd7 8.Be2 Bd6 9.0-0 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

5.Nf3 Bb7 6.Be2 Be7 7.0-0 0-0 (--> 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 c5 – without 8.bc6).

5.Nf3 Bb7 6.Be2 Be7 7.c4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2).

5.f4 Bb7 6.Nf3 d5 7.Be2 Nbd7 8.0-0 Bd6 9.Ne5 Qe7 (9...0-0 10.Nd7 Nd7 11.Qe1=) 10.a4 Rg8 (10...0-0 11.a5=) 11.c4 g5 (11...a6 12.Nc6 Qf8 13.cd5 Nd5 14.Nc3 Nc3 15.Bc3+=) 12.Bf3 (12.Nc6 Bc6 13.bc6 Nb8+=) 12...gf4 (12...a6 13.Nc6 Qf8 14.cd5 Nd5 15.fg5 ab5 16.ab5 Ra1 17.Ba1 Rg5 18.Bh5 Bh2 19.Kh1 Rh5 20.Qh5+/–) 13.ef4+= 0-0-0 (better is 13...Qd8!?+=) 14.a5+/– Be5 15.fe5 (15.Be5?! Ne5 16.fe5 Nd7=) 15...Ne4 16.ab6 ab6 17.d4 (17.cd5!? Ng5 18.d6 Nf3 19.Rf3+=) 17...Ng5+= 18.Ra7 (18.Nd2 Nf3 19.Nf3 dc4=) 18...Nf3 19.Qf3 (worse is 19.Rf3 dc4 20.Qf1 Qh4 (20...Bf3?? 21.Qf3 Nb8 22.Re7+-) 21.Rb7 Kb7–/+) 19...Kb8 (19...Rg7 20.Nd2 Rdg8 21.Rf2=) 20.Rb7+= Kb7 21.cd5 ed5? (21...Kb8!?+=) 22.Qd5+/– Kb8 23.Rf7 (23.Qf7?! Qf7 24.Rf7 Rgf8=) 23...Ne5? (23...Qg5 A) 24.Rh7 Qe3 25.Kf1 Qd3 26.Kf2 Qc2 (26...Qh7?! 27.Qd6 Kb7 28.Qc6 Ka7 29.Qc7 Ka8 30.Qc6 Kb8 31.Qd6 Kc8 32.Qc6 Kb8 33.Qd6=; 26...Qb1?! 27.Qd6 Ka8 28.Qc6 Kb8 29.Qd6 Kc8 30.Qc6 Kb8 31.Qd6=) 27.Ke3 cd4 (27...Qh7?! 28.Qd6 Kb7 29.Qc6 Ka7 30.Qc7 Ka8 31.Qc6 Kb8 32.Qd6 Kc8 33.Qc6 Kb8 34.Qd6=) 28.Qd4 A1) 28...Qh7?! 29.Qd6 Kb7 30.Qc6 Ka7 31.Qc7 Ka8 32.Qc6 Kb8 33.Qd6 Kc8 34.Qc6 Kb8 35.Qd6=; A2) 28...Qb1?! 29.Qd6 (29.Rd7?? Qe1 30.Kd3 Rd7–+) 29...Kc8 30.Qc6 Kb8 31.Qd6 (31.Rd7 Qe1 32.Kf3 Rdf8 33.Qf6 Qf1 34.Ke3 Qg1 35.Kd3 Rf6 36.ef6 Qd1 37.Ke3 Qd7 38.Be5 Kc8–+) 31...Kc8 32.Qc6 Kb8 33.Qd6= (33.Rd7 Qe1 34.Kf3 Rdf8 35.Qf6 Qf1 36.Ke3 Rf6 37.ef6 Qg1 38.Kf4 Qf2 39.Ke5 Qb2 40.Ke6 Qe2 41.Kd6 Qd3 42.Ke6 Qe3 43.Kd6 Re8–+); A3) 28...Nc5–+; B) 24.Qd6 Kc8 25.Qc6 Kb8 26.Qe4 (26.Rd7?? Qe3 27.Kf1 Rgf8 28.Qf6 Rf6 29.ef6 Rd7–+) 26...cd4 27.Bd4+/–) 24.Re7 (better is 24.Qe5!? Qe5 25.de5 Kc8+-) 24...Rd5+/– 25.Re5 (worse is 25.de5 Rd1 26.Kf2 Rb1–/+) 25...Re5? (better is 25...Rgd8!? 26.Re6 Ka7+/–) 26.de5+- Rd8 27.Nc3 Rd2 28.Ba3?? (28.Na4!? Kc7 29.Kf1 Rc2+-) 28...Rc2 (28...Rd3 29.Bc5 bc5 30.Na4=) 29.Na4 (29.Nd5 Ra2+/–) 29...Kc7 (29...Ra2 30.Bc5! Ra4 31.Bb6+=) 30.e6 Re2 31.Nc5 bc5 32.Bc5 Re6 33.g3 Re5 34.b6 Kc6 35.Bf2 Rb5 36.Kg2 Kd6 37.Kf3 Ke5 (37...Rf5 38.Ke2+/–) 38.g4 ½–½. Bellinger,R – Goodman,M, London op, 1973.

5.f4 Bb7 6.Nf3 Be7 7.Be2 0-0 8.0-0 Ne4 9.d3 Bf6 10.c3 (10.Be5 d6 11.de4 de5 12.Qd8 Rd8 13.fe5 Be7=) 10...Nd6 11.a4 Nf5 12.Qc1 (12.Bc1 d5=) 12...d5 13.g4 Nh4 (13...Nd6 14.g5 Be7 15.c4+=) 14.Qe1 Nf3 15.Bf3 Qd7 (15...a6 16.g5 Be7 17.c4=) 16.g5 Be7 17.Nd2 a6 18.c4 f6 19.h4 (19.Qg3 fg5 20.fg5 Bd6=) 19...Qc7 (19...Ra7 20.Rd1+=) 20.Qg3= Nd7 21.Qg2 Qd6 22.cd5 ed5 (22...Bd5? 23.e4 ab5 24.ed5 Ra4 25.de6 Ra1 26.Ra1+-) 23.Nc4 Qe6 24.f5 Qf5 (24...Qf7 25.gf6 Nf6 26.Nb6 Rad8+/–) 25.Be4+- dc4?? (better is 25...Qf1 26.Rf1 de4 27.Nb6 Nb6 28.gf6 Bf6 29.Rf6 Rf6 30.Bf6 g6 31.ba6 Ra6+-) 26.Rf5 (26.Bf5 Bg2 27.Kg2 Rad8 28.Be6 Kh8 29.Bc4 ab5 30.Bb5 fg5 31.hg5 Kg8+/–) ½–½. Buczinski,Henryk – Zajac,J, Katowice Poland, 1979.

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5).

5.c4 b6 6.Nf3 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5).

5.c4 b6 6.Nf3 Bb7 7.Be2 Bd6 8.0-0 0-0 9.a4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

5.c4 b6 6.Nf3 Bb7 7.Be2 Be7 8.0-0 Nbd7 9.d4 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7).

5.c4 Bd6 6.Nf3 0-0 7.d3 Nbd7 8.Nbd2 b6 9.Be2 Bb7 10.0-0 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d3 Bb7 10.Nbd2).

5.c4 Bd6 6.Nf3 0-0 7.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0).

5.c4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7).

5.c4 Be7 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4).

5.f4 Bd6 6.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.f4 Nbd7 6.Nf3 Bd6).

5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3).

5.Nf3 b6 6.c4 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5).

5.Nf3 Bd6 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.c4 c5).

5.Nf3 Bd6 6.c4 0-0 7.Be2 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3 Bd6 9.c4 0-0 10.Be2).

5.Nf3 Bd6 6.c4 0-0 7.Be2 Nbd7 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0).

5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 Qe7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 Qe7).

5.Nf3 Bd6 6.Be2 0-0 7.0-0 Nbd7 8.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0).

5.Nf3 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7).

5.Nf3 Be7 6.c4 0-0 7.Be2 Nbd7 8.d3 b6 9.Nbd2 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7).

5.Nf3 Be7 6.c4 0-0 7.Be2 Nbd7 8.d3 b6 9.Nbd2 Bb7 10.0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5 8.d3 c5 9.Nbd2 Nbd7 10.c4).

5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 c5).

6.a4 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7).

6.a4 Bd6 7.c4 b6 8.Be2 Bb7 9.0-0 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3).

6.c4 b6 7.Be2 Bb7 8.0-0 Bd6 9.a4 0-0 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

6.c4 Bd6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7).

6.c4 Bd6 7.d3 0-0 8.Nbd2 b6 9.Be2 Bb7 10.0-0 Qe7 11.a4 a5 12.ba6 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d3 Bb7 10.Nbd2 Qe7 11.a4 a6 12.ba6).

6.c4 Bd6 7.d4 b6 8.Nbd2 Bb7 9.Be2 0-0 10.0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d4 Bb7 10.Nbd2).

6.c4 Bd6 7.Be2 0-0 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0).

6.c4 Bd6 7.Be2 0-0 8.0-0 b6 9.d3 Bb7 10.a4 Qe7 11.Nbd2 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d3 Bb7 10.Nbd2 Qe7 11.a4).

6.c4 Be7 7.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 Nbd7).

6.c4 Be7 7.Be2 0-0 8.a4 b6 9.0-0 Bb7 10.Qb3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4 Nbd7 10.Qb3).

6.Be2 Bd6 7.c4 b6 8.d4 Bb7 9.0-0 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d4 Bb7).

(--> 3.b5 Be7 4.e3 c5).

5.c4 d5 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4).

5.Nf3 b6 6.c4 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7).

5.Nf3 b6 6.c4 Bb7 7.Be2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2).

5.Nf3 b6 6.d3 Bb7 7.c4 0-0 8.Be2 d5 9.Nbd2 Nbd7 10.0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5 8.d3 c5 9.Nbd2 Nbd7 10.c4).

5.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7) 6.c4 b6 7.Be2 0-0 8.0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 b6 8.0-0) 8...Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

5.e3 a5 6.a4 Bb7 7.Bd3 d5 8.c4 (8.Nc3 Bd6+=) 8...dc4 (8...Bd6 9.cd5 Bd5 10.Nc3=) 9.Bc4 Be7 (9...Bd6 10.0-0=) 10.Nc3 0-0 11.0-0 Nd5 (11...Bd6 12.Qe2=) 12.d4+= Nc3 (12...cd4 13.Bd5 (worse is 13.Nd4 Nc3 14.Bc3 Qc7+=) 13...dc3 14.Bb7 cb2 15.Ba8 ba1R 16.Qa1=) 13.Bc3 cd4 (13...Nd7 14.Rc1+=) 14.Bd4 (14.Nd4 Qc7 15.Nc6 Nc6 16.bc6 Qc6–+ (16...Bc6?! 17.Qg4 e5 18.Rfc1+=); 14.Qd4?! Qd4 15.Bd4 Nd7=) 14...Nd7 15.Ne5 Ne5 16.Be5 Bf6 17.Qd8 Rfd8 18.Bf6 gf6 19.Rfd1 Kf8 (19...Rac8 20.Rd8 Rd8 21.f3=) 20.f3+= Ke7 (20...f5 21.Kf2+=) 21.Kf2 Rd1 (21...Rac8 22.Rd8 Rd8 23.e4+=) 22.Rd1 Rc8 23.Rd4 Rd8 (23...h6 24.Rh4+=) 24.Rd8+/– Kd8 25.e4 Kd7 26.Ke3 Kd6 27.Kd4 Bc8 (27...h5 28.g3+/–) 28.g3 e5 (28...Ke7 29.f4+/–) 29.Kc3 Be6 30.Be6 fe6 31.g4 (31.h4 Kc5+/–) 31...h6 32.Kc4 Ke7 (32...Kc7 33.Kd3+/–) 33.h3 (33.h4 Kf8+/–) 33...Kd6 34.h4 Ke7 35.Kd3 Kd6 36.h5 (better is 36.Kc3+/–) 36...Kc5? (36...Ke7 37.Ke3+=) 37.Kc3?? (better is 37.f4 Kd6 38.g5+-) 37...Kd6= 38.Kd3 Kc5 39.f4! ef4? (39...Kd6 40.g5! Ke7 41.gh6 Kf7 42.fe5 fe5+-) 40.e5! fe5 41.g5! Kd5 (41...hg5 42.h6 Passed pawn) 42.gh6 e4 43.Kc3 f3 (43...e3 44.h7 Ke4 45.h8Q+-) 44.h7 f2 45.h8Q (45.h8Q Kd6 46.Qd4 Ke7 47.Qf2+-) 1–0. DEFFM – Guestxxx, freechess.org, 2018.

5.e3 Bb7 6.Be2 Be7 7.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 c5).

(--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.b5 c5 – without 5.bxc6).

5.e3 Be7 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4 c5).

5.e3 Be7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 c5).

4.c4 Bd6 5.e3 c5 6.Nf3 0-0 7.a4 Nbd7 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

4.d3 c5 5.c4 Be7 6.Nf3 0-0 7.g3 dc4 8.dc4 Qd1 9.Kd1 Ne4 10.Kc2? (better is 10.Ke1+=) 10...Nf2–+ 11.Rg1 Ng4 (11...a6 12.Bg2–+) 12.Nbd2 Ne3 13.Kb3 (better is 13.Kd3!? Nf5 14.e4 Rd8 15.Ke2–/+) 13...a6–+ 14.Bg2 Nd7 15.Ne5 Ne5 16.Be5 Ng2 17.Rg2 Rd8 18.Nf3 Rd7 19.Rgg1 f6 20.Bc3 ab5 21.cb5 b6 22.Rgd1 e5 23.Rd2 (better is 23.Rd7 Bd7 24.a4–+) 23...Rda7 24.a4 1–0. Jokmin,Alex – De Leon,Fabiana, SN–2010-0-00236, 2010.

4.d3 Bc5 5.Nf3 c6 6.a4 Bd7 7.e3 h6 8.Nc3 (8.d4 Bb4 9.c3 Ba5=) 8...a6 9.Be2 Qa5 10.0-0 Bb4 11.Na2 Be7 (11...Qa4? 12.Bf6 Bf8 13.Nc3+-) 12.c4 Qc7 (12...0-0 13.Ne5=) 13.Be5+= Bd6?? (better is 13...Qd8+=) 14.b6!+- Be5 (14...Qb6 15.Bd6 Deflection) 15.bc7 Bc7 16.Qb3 b6 (16...Ra7 17.c5+-) 17.c5! b5 (17...bc5 18.Qb7 Combination) 18.Nc3 g5 (18...0-0 19.d4 Ra7 20.Ne5+-) 19.d4 0-0 (19...Ba5 20.Ne5 0-0 21.ab5 ab5 22.Ra2+-) 20.ab5 cb5 21.Nb5! (21.Nb5 Bb5 22.Bb5+-) 1–0. usingprogram (1970) – juveyll, kurnik, 2012.

4.d3 Qd6 5.a4 a6 6.Nd2 ab5 7.ab5 Ra1 8.Qa1 Be7 (8...Nbd7!?=) 9.Qa8+= Nfd7 10.Bg7 Rg8 11.Ba1 Nb6?? (11...c6 12.Qa4+=) 12.Qa2?? (12.Qb8 Qa3 13.Nb3+-) 12...e5 Black intends d4 13.Ngf3 d4 14.e3 de3 15.fe3 Qh6 16.Be5 Qe3 17.Kd1 Be6 18.Qa7 N8d7 19.Bd4 Qf4 20.c4 Rg6 (20...Bc5!? 21.Bc5 Nc5 22.d4+-) 21.Qb7 Bg4 22.Kc2 Re6 23.Nb3 f6 (23...Bf6 24.Bf6 Rf6 25.Nbd4+-) 24.Rg1 (24.c5 Bf3 25.gf3 Bc5 26.Bc5 Qa4 27.Bb6 Nb6+-) 24...Kf7 (24...Bf3 25.Qf3 (25.gf3?! Qh2 26.Rg2 Qh1+-) 25...Qh4 26.c5+-) 25.h3 c5? (25...Bh5+-) 26.bc6 Bf3 27.gf3 (27.Bb6?! Bc6 28.Qc7 Rd6+=) 27...Qf3 28.Bb6 Nb6 29.Qb6 Rc6 30.Qa7 Qf5 31.Nd4 Qf2 (31...Rc4 32.Kd1 Qc5+-) 32.Be2 Qg1 33.Bh5 Kg8 34.Qe7 Rc4 (34...Qh2 35.Kc3 Rc4 36.dc4 Qg3 37.Kc2 h6 38.Qf7 Kh8+-) 35.dc4 Qf2 36.Kb3 Qg3 37.Ka4 (37.Ka4 h6 38.Nf5 Qg5 39.Qf7 Kh8 40.Bg6 Qg6 41.Qg6 h5 42.Qg7) 1–0. Trokenheim,Marek (1765) – Couspeyre,Thierry, OP–2012–0-02228, 2012.

4.e4 Ne4 5.Bd3 Nf6 6.Nf3 Bd6 7.0-0 Bd7 8.Ne5 c6 9.Ng4 Be7 10.a4 c5 11.c4 d4 (11...0-0 12.Na3=+) 12.Nf6=+ Bf6 13.Qh5 Qc7 14.Re1 Qf4 (better 14...a6=+) 15.Qc5+- Bh4? (better 15...Kd8+-) 16.g3+- (worse 16.Bd4 Be7 17.Qe5 Qe5 18.Be5 Kf8+-) 16...Bg3 (16...Qg4 17.Qc7 Nc6+-) 17.hg3 (worse 17.fg3 Qg4 18.Be4 Nc6 19.bc6 bc6 20.Bc6 Bc6 21.Qc6 Ke7+-) 17...Qg4 18.Ba3 Qg5 1–0. DEFFM – GuestDRND, freechess.org, 2018.

4.Be5 Bd6 5.d4 0-0 6.c3 c6 7.a4 (7.Bd6 Qd6 8.e3 a6 9.bc6 Nc6=+) 7...a6 (7...Be5 8.de5 Ne4 9.Qd4–/+) 8.Nd2 (8.ba6 b6=+) 8...ab5 9.e3 (9.ab5 Ra1 10.Qa1 Be5 11.de5 Ng4–/+) 9...ba4–/+ 10.Ra4 Ra4 11.Qa4 Qc7 (11...b5 12.Qa7 Be5 13.de5 Nfd7–/+) 12.c4? (better 12.Bf6 gf6 13.c4=+) 12...Be5–+ 13.de5 Qe5 14.Ngf3 Qd6 15.Bd3 (15.Qc2 e5–+) 15...Bd7 (15...dc4 16.Qc4 Rd8 17.Bc2–+) 16.0-0 c5 17.Qa7 (17.Qa3 Rd8–+) 17...Bc6 (17...dc4 18.Bc4 b5 19.Be2–+) 18.Rd1 Nbd7 19.Nb3 (better 19.Qa1–+) 19...dc4?? (better 19...b5 20.Qa1 bc4 21.Bc4 Ra8–+) 20.Bh7+- Nh7 (20...Kh7 21.Rd6) 21.Rd6 cb3 22.Nd2 b2 23.Qa2 Nhf6 24.Qb2 Ra8 25.h4 (25.e4 Ne8 26.Rd3 b5+-) 25...Bd5 (25...Kf8 26.Nc4+-) 26.h5 (26.e4!? Ra2 27.Qc1+-) 26...Ra2+= 27.Qc3 Kf8 (27...b5 28.Qc1 Kf8 29.e4+-) 28.e4 Be4? (better 28...Rd2 29.Qd2 Ne4 30.Rd5 Nd2 31.Rd7 Nb3 32.Rb7 Nd4+-) 29.Rd7!+- Nd7 Theme: Deflection from e4 30.Ne4 b6 31.Qd3 Ra1 (31...Ra7 32.Qd6 Ke8 33.Qc6+-) 32.Kh2 Ra7 33.g4 Kg8 34.Ng5 Nf8 35.Qd8 (better 35.Qb5+-) 35...Ra4 (35...b5 36.Ne4 Rd7 37.Qg5+-) 36.Qe8 (better 36.Qc7 Ra8 37.Qf7 Kh8 38.h6 gh6 39.Qf6 Kg8 40.Ne6+-) 36...Ra7 37.Qd8 (37.Qb8 Ra2 38.Qb6 Rf2 39.Kg3 Rd2+-) 37...Rb7?? (37...Ra4 38.Qc7 Ra8 39.Qf7 Kh8+-) 38.Ne4+- Rd7 (38...e5 39.h6 gh6 40.Nf6 Kg7 41.Nh5 Kg8 42.Qf6+-) 39.Qb6 Rd4 40.f3 (40.Nc5 Kh7+-) 40...Rd3 41.Kg2 c4 42.Nc5 (42.Qc7!? Rd7 43.Qc4 Rd1+-) 42...Rd2 43.Kf1 (43.Kg3 Rd4+-) 43...Rd4 (43...c3 44.Qc7 c2 45.Nb3+-) 44.Ne4 Rd3 45.Ke2 Rd5 (45...e5 46.Qb8+-) 46.Qc6 Nd7 47.Qc4 Ne5 (47...f6+-) 48.Qc8 Kh7 49.Ng5 Kh6 50.f4 Ng4 (50...Rd2 51.Kd2 Nf3 52.Nf3 Kh7 53.Ng5 Kh6 54.Qh8) 51.Qh8 1–0. hamiltonharris (1810) – Klaatu (2090), ChessWorld.net, 2013.

4.Be5 Nbd7 5.Bb2–/+.

4.f3 Bc5 5.e3 0-0 6.Nh3 a6 7.Nf2 ab5 8.Bb5 c6 9.Be2 Nbd7 10.f4 Bd6 11.0-0 e5 12.fe5 Ne5 13.a4 Qc7 14.Ba3 Be6 15.Bd6 Qd6 16.d4 Ng6 17.a5 b5 18.Bd3 Ra6 19.Nd2 Rfa8 20.Nb3 Nd7 21.e4 de4 22.Ne4 Qe7 23.Qd2 Bd5 24.Nec5 Nc5 25.Nc5 R6a7 26.Bg6 hg6 27.a6 Qh4 28.Rae1 f5 29.c3 Qf6 30.Qf4 Bc4 31.Rf3+- Rd8 32.Rfe3 g5 33.Qf3 Bd5 34.Re8 Kf7?? 35.Qh5 g6 36.Qh7 Qg7 37.R1e7!! Re7 38.Re7 Ke7 39.Qg7 Bf7 40.a7 g4 41.Qe5 Kf8 42.Qh8 Ke7 43.Qh4 (43.Qh4 Ke8 44.Nb7 Ra8 45.Qh8 Bg8 46.Qg8 Ke7 47.Qa8 Kf7 48.Qh8 g3 49.a8Q gh2 50.Kh2 Ke6 51.Qae8 Kd5 52.Qhg8#) 1–0. marekt – rasamatic, Yahoo, 2005.

4.f3 Nbd7 5.Nc3 a6 6.ba6=+ Ra6 7.e4 Rb6 8.e5?? Rb2 9.ef6 Qf6 10.Qc1 Rb6 11.Nb5 Bd6 12.a4 0-0 13.a5 Rc6 14.Na7? Rc5 15.Nc8 Rc8 16.a6 ba6 17.Ra6 Nb6 18.Bd3 Nc4 19.Ne2 Bf4 20.0-0 Nd2 21.Qa3?? Qe5 22.g3?? Nf1 23.gf4–/+ Qh5?? 24.Kf1 Qh3?? 25.Ke1 Rb5? 26.Bb5+- Rf8 27.Ra8 (27.Ra8 Qh4 28.Kd2+-) 1–0. MasterofDisaster – GreyGoose, Live Game Caissa's Web, 2005.

4.f4 Bd6 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.f4).

4.f4 Bd7 5.e3 Bc5 6.Be5 0-0 7.Nc3 c6 8.Nf3 a6 9.a4 ab5 10.ab5 Ra1 11.Qa1 Ne4? 12.Bg7!+- Kg7?? 13.Ne4 Kg8 14.Nf6 Kh8 15.Nd7 Kg8 16.Nc5 1–0. jjj – kkk, internet, 2009.

4.g3 c5 5.Bg2 (5.Nf3 a6 6.e3 Nbd7+=) 5...Nbd7 6.f4 (6.a4 a6+=) 6...Qb6 (6...a6 7.c4+=) 7.a4 a6 8.Bf6 Nf6 9.c4 (9.Nc3!?+=) 9...ab5–/+ 10.cb5 c4 11.e3 Bb4 12.Qe2 (12.Nc3 Bc3 13.dc3 Qe3 14.Ne2 Ra5–/+) 12...Bd7 (better is 12...e5 13.Nh3 Bg4–+) 13.Na3?? White crumbles in face of a dire situation (better is 13.Nf3!?–/+) 13...Ba3 (better is 13...Ra4 and the result of the game is clear: Black will win 14.Rb1 Ba3–+) 14.Ra3 Bb5! Deflection: a4 15.Qd1 (15.ab5 Ra5 Decoy Double attack (15...Ra3 Deflection Pinning)) 15...0-0 16.Ne2 Nd7 (16...Qa5 17.Ra2 Ba4 18.Qb1–+) 17.Nc3 (17.Nd4 Bc6 18.Qa1 Nc5–+) 17...Bc6–+ 18.0-0 Nc5 19.Qc2 (19.Ra2 Nb3–+) 19...Ra5 (19...Qb4 20.Rfa1–+) 20.Rb1 (20.f5 Raa8–+) 20...Qc7 21.Nb5 (21.f5 Raa8–+) 21...Bb5 22.Rb5 Rfa8 23.Rb4 (23.Qc3 Ra4 24.Ra4 Ra4–+) 23...Qd7 (23...b5 makes it even easier for Black 24.Bf3–+) 24.Qb1 (24.Qb2 Na4 25.Qa1 b5–+) 24...Ra4 25.Raa4 Ra4 (25...Na4?! 26.Rb7 Qc8 27.Qb4–/+) 26.Rb2 (26.Ra4 Na4 (26...Qa4?! 27.Qb6 Nd7 28.Qb7–/+) 27.f5 ef5–+) 26...g6 27.g4 (27.Bf1 does not improve anything 27...Nb3 28.d3 b5–+) 27...Ra3 (better is 27...Nb3 and Black can already relax 28.Rb3 cb3 29.Qb3 g5–+) 28.e4 (28.Ra2 cannot undo what has already been done 28...Ra2 29.Qa2 b5–+) 28...Rb3 (28...de4!? might be the shorter path 29.Kh1 Qd4 30.Bf1–+) 29.d4 (29.ed5 there is nothing better in the position 29...ed5 30.f5–+) 29...Rb2 (29...de4 30.d5 Qd5 31.Rb3 Qd4 32.Kh1 cb3 33.f5 ef5 34.Bf1 fg4 35.h3–+) 30.Qb2 Nd3 31.Qd2 (31.Qe2 doesn't do any good 31...Nf4 32.Qf3 g5 33.ed5 Qd5 34.Qd5 ed5–+) 31...b5 (better is 31...de4 seems even better 32.Qe3 f5 33.gf5 gf5 34.Bf1–+) 32.ed5 ed5 33.f5 b4 (better is 33...Qa7 keeps an even firmer grip 34.Qe3 Qa1 35.Bf1 b4–+) 34.Qg5 (34.Bf1 otherwise it's curtains at once 34...Qa7 35.Bd3 Qd4 36.Kg2–+) 34...b3 35.fg6 hg6 36.Bd5 Nf4!! Deflection: d5 37.Qf4 Qd5 38.Qd2 Qb5 (38...Qb5 39.Qc1 b2–+) 0–1. Hebert,Marc – Pilote,Guillaume, Quebec Montcalm op 1st, 2000.

4.g3 c6 5.Bg2 Be7 6.Nf3 0-0 7.0-0 c5 8.Nc3 b6 9.Ne5 Bb7 10.e4 d4–/+ 11.Ne2 Be4 12.d3 Bg2–+ 13.Kg2 Qd5 14.Nf3 Nbd7 15.c4 Qh5 16.Nf4 Qf5 17.Nh4 Qe5 18.Re1 Qb8 19.Bc1 g5 20.Ne6 fe6 21.Nf3? g4 22.Ng5 Qb7 23.Kg1 e5 24.Ne4 h5 25.Bh6 Rf7 26.f3? gf3 27.Qf3 Ng4 28.Nf6+= Kh8?? 29.Qb7+- Rf6 30.Qa8 Kh7 31.Bf4 ef4 32.Re7 Kg6 33.Qg8 Kf5 34.Rd7 Ne3 35.Qh7 Kg5 36.Rg7 (36.Rg7 Rg6 37.Qg6) 1–0. Salvatore – marnzell, ChessWorld.net, 2006.

4.g3 Bd6 5.Bg2 c6 6.a4 cb5 7.ab5 Bd7 8.Na3 Qb6 9.Rb1 Ne4 10.Bg7 Rg8 11.Be4 Rg7 12.Bf3 e5 13.Bd5 Qc5 14.Bb7 Qa3 15.Ba8 Ke7 16.Bg2 Bf5 17.Rb3 Qc5 18.Nf3 Bc2 19.d4 ed4 20.Qa1 Bb3 21.Nd4 Bd5 22.Nf5 Kd7 23.Bd5 Qd5 24.Qa7 Bc7 25.0-0 Qf5 26.Qd4 Bd6 27.Qg7 Qb5 28.Qf7 Kc6 29.Rc1 Kb6 30.Qh7 Qe2 31.Rb1 Ka6 32.Qb7 Ka5 33.Ra1 Ba3 34.Ra3 1–0. XRayKobie (1710) – T_Challa010 (1720), lichess.org, 2020.

4.g3 Nbd7 5.g4+=.

4.h3 c5 5.Be5 Nbd7–/+ 6.Nf3 (6.Bh2!?–/+) 6...Ne5–+ 7.Ne5 Bd6 8.Ng4 (8.Nf3 e5–+) 8...e5 (8...Ne4 9.e3–+) 9.a4 (9.e3 Ne4–/+) 9...Ng4–+ 10.hg4 Bg4 11.a5 Bc7 (11...Qd7 12.Nc3 Be7 13.f3–+) 12.a6 ba6 13.Ra6 Ba5 14.f3? (better 14.Nc3 Bc8 15.Ra5 Qa5 16.Nd5–+) 14...Bc8 15.Rc6 (15.Ra5 Qa5 16.e4 d4–+) 15...Bb6 (15...Bb7!? 16.Rc5 Qb6 17.Rc3 Bc3 18.Nc3–+) 16.Rh5 0-0 17.e4 de4 18.Re5?? (18.Qe2 ef3 19.Qf3 Bb7–+) 18...Bb7 (18...Qh4 19.Ke2 ef3 20.gf3 Qh2 21.Bg2 Qe5 22.Kf1–+) 19.Rec5 (19.Re4 Bc6 20.bc6–+) 19...Bc5 (19...Qh4 20.Ke2 ef3 21.Kf3 Bc5 22.d4 Bd4 23.Qd3–+) 20.Rc5 (20.Qe2 Bc6 21.bc6 ef3 22.Qf3 Re8 23.Be2 Qd4–+) 20...Qh4 21.Ke2 ef3 22.gf3 Rfe8 23.Kd3 Rad8 (23...Re1!? 24.Qe1 Qe1 25.Bh3–+) 24.Kc3 Qd4 25.Kb3 Qc5 26.Nc3 (26.c3 Qf2 27.Bc4 a6–+) 26...Rd4 27.Ka2 Qc3! 28.dc3 A pinning theme 28...Rd1 29.Bd3 Bf3 30.c4 Rc8 (30...g5 31.Bf5–+) 31.Kb2 h5 32.c3 0–1. hamiltonharris (1930) – newman1890 (2090), ChessWorld.net, 2017.

4.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.a4 e6 4.b5).

4.a4 a6 5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4).

4.a4 a6 5.e3 ab5 6.ab5 Ra1 7.Ba1 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1).

4.a4 a6 5.e3 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4).

4.a4 a6 5.e3 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4).

4.a4 a6 5.e3 ab5 6.ab5 Ra1 7.Ba1 Bd6 8.Nf3 0-0 9.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1).

4.a4 c5 5.e3 a5 (--> 1.b4 d5 2.Bb2 Nf6 3.a4 e6 4.b5 c5 5.e3 a5).

4.a4 c5 5.e3 a6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 c5).

4.a4 c5 5.e3 a6 6.c4 ab5 7.ab5 Ra1 8.Ba1 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4).

4.a4 c5 5.e3 Bd6 6.c4 0-0 7.Nf3 b6 8.Be2 Bb7 9.0-0 Nbd7 10.d4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

4.a4 c5 5.e3 Bd6 6.c4 0-0 7.Nf3 Nbd7 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

4.a4 c5 5.e3 Bd6 6.c4 Nbd7 7.Nf3 0-0 8.Be2 b6 9.0-0 Bb7 10.d4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

4.a4 c5 5.e3 Nbd7 6.c4 b6 7.Nf3 Bb7 8.Be2 Bd6 9.0-0 0-0 10.d4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7 10.d4).

4.a4 c5 5.e3 Nbd7 6.c4 Bd6 7.Nf3 0-0 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

4.a4 c5 5.e3 Be7 6.c4 0-0 7.Nf3 a6 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

4.a4 c5 5.e3 Be7 6.Nf3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.a4).

4.a4 c5 5.e3 Be7 6.Nf3 0-0 7.Be2 a6 8.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

4.a4 c6 (--> 3.b5 c6 4.a4 d5).

4.a4 c6 5.e3 cb5 6.ab5 a6 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 cb5 6.ab5 a6).a

4.a4 c6 5.e3 Nbd7 6.c4 Be7 7.Nf3 0-0 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 Nbd7 8.Be2).

4.a4 c6 5.e3 Be7 6.c4 0-0 7.Nf3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4).

4.a4 Bd6 5.e3 0-0 6.c4 c5 7.Nf3 Nbd7 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

4.a4 Bd6 5.e3 a6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 Bd6).

4.a4 Bd7 5.e3 a6 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 Bd7).

4.a4 Bd7 5.e3 c6 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 d5 5.e3 Bd7).

4.a4 Be7 5.e3 0-0 6.c4 c6 7.Nf3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4).

4.a4 Be7 5.e3 0-0 6.c4 c6 7.Nf3 Nbd7 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 Nbd7 8.Be2).

4.a4 Be7 5.e3 0-0 6.Nf3 a6 7.c4 c6 8.Nc3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Nc3 Nbd7).

4.a4 Be7 5.e3 0-0 6.Nf3 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0).

5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Qd5 9.Nc3 (9.Bf6 gf6 10.Nc3 Qc5=) 9...Qc5=+ 10.Nf3 (10.Qa4 Nbd7 11.Qc4 Qa3=+) 10...Bd7 Exerts pressure on the isolated pawn (10...Nbd7 11.Qc2-/+) 11.Bb2 (11.Qa4!? Bd6 12.Bc4=) 11...Bb5 12.Nb5 Qb5 13.Qc2 (13.Qc1 Qf5=+) 13...Nc6 (13...Qb3!? 14.Qb3 cb3-/+) 14.Bc4 Qa5 (14...Qc5!?=+) 15.0-0= Nb4 16.Qb3 b5?? (16...Qb6 17.Ra1 c5 18.Ra8 Ke7 19.d4+/-) 17.Be2?? (better 17.Be6 Qb6 18.Bf7 Kd8 19.Ra1+-) 17...c6+= 18.Ng5 (better 18.Bf6 gf6 19.Qc3+=) 18...h6 (better 18...Qd8=) 19.Ne6!+/- fe6? (19...Nbd5 20.Nf8 Qd2 21.Bf6 Nf6+-) 20.Qe6+- Be7 21.Qc8 (better 21.Ra1 Qa1 22.Ba1+-) 21...Qd8-+ 22.Qf5 0-0 23.Ba3 (23.Qe6 Kh8-+) 23...Nfd5 (23...Qd2 24.Qe6 Rf7 25.Bb4 Bb4 26.Bf3-+) 24.Qb1 (24.Qe6 Kh8-+) 24...Na6 (better 24...Bd6-+) 25.Bf3? (better 25.Bb2-+) 25...Ba3 26.Qb3 (26.Qa2 b4 27.e4 Qg5-+) 26...Be7 (better 26...Bb4 27.e4 Rf3 28.Qf3-+) 27.d4 (27.e4 Nc5 28.Qa2 Bd6 29.ed5 Rf3 30.dc6 Rf7-+) 27...Qd6 (27...Kh8 28.Ra1 Nab4 29.h3-+) 28.Qd1 (28.e4 Nac7 29.ed5 Nd5 30.Rc1-+) 28...Nab4 29.Qe2 (29.Qb3 Kh7-+) 29...c5 (29...Nb6 30.Ra1-+) 30.dc5 (30.Qb5 cd4 31.ed4 Nf4 32.Qc4 Kh8-+) 30...Qc5 31.Rd1 (31.Bd5 Nd5 32.Qa2 Qc4 33.Qc4 bc4-+) 31...Nc3 32.Qd2 Nd1 33.Qd1 Rd8 34.g3 (34.Qf1-+) 34...Rd1 35.Bd1 Qc1 36.Kg2 Qd1 37.h3 Bc5 (37...Qd5 38.e4 Qe4 39.Kg1 Qe1 40.Kg2 Nd3 41.h4 Qf2 42.Kh3 Qf1 43.Kh2 Nf2 44.h5 Ng4) 38.g4 (38.h4 Qd5 39.Kg1 Qe4 40.Kh2 Qf3 41.h5 Nd3 42.Kg1 Qf2 43.Kh1 Be3 44.g4 Qg1) 38...Qd2 (38...Qe2 39.Kg3 Nd3 40.g5 Qf2 41.Kg4 Qg2 42.Kf5 Qf3 43.Ke6 Qf7) 39.h4 (39.h4 Nd3 40.Kh2 Qf2 41.Kh3 Qf1 42.Kg3 Bd6; 39.Kg3 Nd3 40.g5 Qf2 41.Kg4 Qg2 42.Kf5 Qf3 43.Ke6 Qf7). ClayPigeons (2200) - Agus_Wijaya_KBPL (2110), Rated Bullet game, lichess.org, 2021.

5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Qd5 9.Nc3 Qc5 10.Nf3 Nbd7 11.Qb1 Nb6 12.Na4?? (better 12.d3-/+) 12...Qb4 (12...Na4 13.Bd4 Qd5 14.Qc2 Qb5 15.Bc4-+) 13.Qd1?? (better 13.Qb4 Bb4 14.Nb6 cb6 15.Bc4+/-) 13...Qb5 (13...Na4 14.Qc1-+) 14.Be5?? (14.Nb6 Qb6 15.Bc4 Be7=+) 14...Nfd5 (14...Na4 15.Qc2 Nb6 16.Bc7-+) 15.Be2?? (15.Nb6 Nb6 (15...cb6?! 16.Qc1=) 16.Bc7 Nd5-/+) 15...Bd6 (better 15...Na4 16.Qc1 Nab6-+) 16.Bg7 Rg8 (worse 16...Qa4 17.Qa4 Na4 18.Bh8+=) 17.Qa1?? (better 17.Nb6 Nb6 18.Qa1-/+) 17...Na4 (17...Qa4!? 18.Qb2-+) 18.0-0 c3 (better 18...Ndb6 19.Be5-+) 19.dc3 (better 19.Bb5 c6 20.Ba4 Rg7 21.dc3+-) 19...Qe2-+ 20.Nd4 (20.Qa4 b5 21.Qd4-+) 20...Qa6 (better 20...Qh5 21.f4 Nac3 22.Be5 Ne3 23.Rf2-+) 21.Bf6 (21.c4 Qc4 22.e4 Rg7 23.ed5 Be5-+) 21...Nf6 22.c4 Ne4 (22...e5 23.Ne2-+) 23.c5 Nac5 24.Qb1 Qf1! 25.Kf1 (25.Qf1 e5 Combination; 25.Kf1 Nd2 Double attack) 25...Nd2 26.Ke2 Nb1 27.f4 Rg2 28.Kf3 Rh2 29.Ne2 Nd2 30.Kg3 e5 (30...Nf1 31.Kf3 h5 32.Nd4 e5 33.fe5 Be5 34.e4 Bg4) 31.Nc3 ef4 (31...Nf1 32.Kf3 h5 33.fe5 Be5 34.Nd5 Bg4) 32.ef4 Rh6 (32...Nf1 33.Kf3 h5 34.f5 Bf5 35.Nd5 Be4) 33.Kf2-+ Rf6 (33...Bf4 34.Nb5 Rh2 35.Ke1 Bg4 36.Nc7 Kd7 37.Ne6 Nd3) 34.Ke3 Bf4 35.Ke2 (35.Kf2 Bg4 36.Nd5 Nd3 37.Kg1 Rg6 38.Nf6 Kd8 39.Ne4 Bf3 40.Ng3 Rg3 41.Kh2 Nf1) 35...Bg4 36.Kf2 Bg5 (36...Be5 37.Kg2 Rf1 38.Nb5 Bf3 39.Kh3 Rh1) 37.Kg2 Bh5 (37...Bf3 38.Kf2 Nd3 39.Kg1 Rh6 40.Nd5 Rh1) 38.Nd5 Nce4 (38...Bf3 39.Kg1 Rh6 40.Nf6 Kd8 41.Nh5 Be3 42.Kh2 Rh5 43.Kg3 Nce4) 39.Nf6 Ke7 (39...Bf6 40.Kh2 b5 41.Kh1 Bf3 42.Kh2 Bd4 43.Kh3 Nf1 44.Kh4 Bf6 45.Kh3 Nf2) 40.Nd5 Ke6 (40...Kd6 41.Nf4 Bf4 42.Kg1 h6 43.Kg2 Bf3 44.Kg1 Be3 45.Kh2 Nf1 46.Kh3 Ng5 47.Kh4 Bf2) 41.Nc3 Nf3 (41...Nf3 42.Ne4 Be3-+) 0-1. ClayPigeons (2210) - vsambor (2215), Rated Bullet game, lichess.org, 2020.

5.e3 a6 6.Bc4 ab5 7.Bb5 Bd7 8.Qb3+=.

5.e3 Bb4 6.Bc4 0-0 7.Qb3 Ba5 8.Nf3 Nbd7 9.0-0 Nc5 (9...a6 10.d4=) 10.Qc2+= c6 (10...Ncd7 11.d4+=) 11.a4 (11.Ba3!? cb5 12.Bb5+-) 11...Bc7 (11...cb5 12.ab5 Ncd7 13.d4+=) 12.d4 Nce4 13.Bd3 Qd5 14.Nc3 (14.Ne5 c5+-) 14...Nc3 15.Bc3 Qh5 (15...Bd7 16.e4 Qh5 17.bc6 Bc6 18.d5 ed5 19.Bf6 gf6 20.ed5 Qd5 21.Bf5=) 16.h3 (16.Bb4 Re8 17.bc6 Nd5+/–) 16...g5? (better is 16...Bd7!?+=) 17.Ne5 (17.Bb4 Re8 18.bc6 Rb8+-) 17...g4 (17...Nd5 18.bc6 Be5 19.de5 bc6 20.Rfb1+/–) 18.Be2 (18.hg4 Qh6+-) 18...Be5 (18...Qh4 19.Ng4 Ng4 20.Bg4+-) 19.de5+- Nd5 20.hg4 (20.bc6 bc6 21.hg4 Qg6+-) 20...Qh4 (20...Qg6 21.Qg6 fg6 22.Bd4+-) 21.Bd4 1–0. GuestYVLY – GuestPTDQ, freechess.org, 2017.

5.e3 Bb4 6.Bc4 0-0 7.Nf3 a5 (7...c6!?=) 8.a3 Be7 9.0-0 Nbd7 10.a4 (10.d3 Nb6+=) 10...Nb6 11.Be2 Nbd5 12.Nc3 Nb4 13.Na2 b6 (13...Na2 14.Ra2 Qd5 15.Qc2+=) 14.Nb4+= Bb4 (14...ab4 15.Qc2+=) 15.Nd4 Bb7 16.Nc2 (16.Rc1 Nd5+/–) 16...Be7 (16...Qd2 17.Qd2 Bd2 18.Rfd1=) 17.d4 (17.d3!?+=) 17...Qd5 18.Bf3 Ne4 19.Ne1 f5 20.Nd3 Bf6 (20...Rac8!?+=) 21.Nf4 Qd7 22.Nh5 (22.Rc1 c5+=) 22...Be7 23.Nf4 g5 (23...Bd6 24.Qc2+=) 24.Nh5 Qe8 25.Be4 Be4+= 26.Ng3 Bb7 27.Qh5 Qh5 28.Nh5 Rad8 29.Ba3 Kf7 30.Be7 Ke7 31.f3 Kf7 32.Rfd1 Kg6 33.Ng3 Bd5 34.e4 Bb3 35.ef5 ef5 36.Rd2 Rd7 37.Kf2 Rfd8 38.Ra3 Be6 39.Rad3 Bc4 40.Rc3 Be6 41.Ne2 h6 42.f4 g4 43.g3 h5 44.Rcd3 Bd5 45.Nc3 Bf3 46.d5 Rd6 47.Rf3 gf3=+ 48.Kf3 Kf6 49.Rd4 Kg6 50.h4 R6d7 51.Ke3 Rd6 52.Kd3 Re8 53.Nd1 Re1 54.Ne3=+ Rg1 55.Rc4 Rg3 56.Rc7 Rg1?? 57.Rc6 Rc6? 58.dc6 Rc1 59.Kd4 Rc5 60.Nd5 Kf7 61.c7 Rc7?? 62.Nc7+- Ke7 63.Nd5 Kd6 64.Nb6 Ke6 65.Nc4 Kf6 66.b6 (66…Kg6 67.Ne5 Kf6 68.b7 Kg7 69.b8Q Kh7 70.Qb7 Kh8 71.Nf7 Kg7 72.Ng5 Kg6 73.Qf7 Kh6 74.Qf6) 1–0. Scirocco – fischerDNA, Caissa.com, 2004.

5.e3 c3 6.Nc3 Be7 7.a4 0-0 8.Nf3 a6 9.Qb3 ab5 10.ab5 c6?? (better 10...Ra1 11.Ba1 Nbd7=) 11.Ra8+- Qc7 (11...Bd7 12.d4+-) 12.b6 Qd6 13.Ba3 Qd7 (13...c5 14.Nb5 Qb6 15.Rb8+-) 14.Rb8 Bd8 (14...Ba3 15.Qa3 Qd8+-) 15.Bf8 (15.Bf8 Kf8 16.Ne5+-) 1-0. ClayPigeons (2200) - Fredericia (2265), Rated Bullet game, lichess.org, 2020.

5.e3 c3 6.Nc3 Be7 7.a4 0-0 8.Nf3 c6 9.Qb3 cb5 10.ab5 a6 (10...a5 11.Be2+=) 11.d4+= ab5?? (better 11...b6+=) 12.Ra8+- Nc6 (12...b4 13.Rb8 bc3 14.Bc3+- (worse 14.Qc3 Nd5 15.Qc2 Nb6+-)) 13.Bb5 e5 (13...Nd7 14.0-0+-) 14.de5 Ng4 (14...Nd7 15.e6 Nb6 16.ef7 Kh8 17.Ra1+-) 15.Ne2 (better 15.Nd5!? Re8+-) 15...Qb6 16.0-0 Be6 17.Rf8 (17.Qa4 Bd5 18.Ba3 Ba3 19.Qa3 Nd8+-) 17...Bf8 18.Qa4 Na7 19.Bd4 (better 19.Nfd4 Nb5 20.Ne6+-) 19...Qb5 20.Qb5 Nb5 21.Rb1 Bc4 (21...Bd7 22.Nf4+-) 22.Nc3 Nc3 23.Bc3 b5 (23...Ba6 24.h3 Nh6 25.e4+-) 24.Nd4 (24.h3!? Nh6+-) 24...Ne5 25.Nb5 Nd3 26.Nc7 h6 (26...f6 27.Rb6+-) 27.Rb8 g6 (27...Ba2 28.Rd8 Bc4 29.Rd4+-) 28.Nb5 (better 28.Bf6+-) 28...Bb5 29.Rb5 f5 (29...Nc1 30.Kf1+-) 30.Rb7 (30.Rb6!? g5+-) 30...Nc5 31.Rb8 Kf7 (31...Ne6 32.Be5+-) 32.Bb4 (better 32.Rf8 Kf8 33.Bb4 Ke7 34.Bc5 Ke6+-) 32...Bd6 33.Bc5?? (better 33.Rh8 h5 34.Ra8+-) 33...Bb8+/- 34.Bd4 g5 35.Kf1 Bd6 36.Ke2 (36.h3 g4+/-) 36...Be7 (better 36...Bh2!? 37.e4 Ke6=) 37.f3+/- Bf6? (37...h5 38.e4 Ke6 39.Kd3+/-) 38.g3 (38.Bf6 Kf6 39.g4 fg4 40.fg4 Ke5+-) 38...Bd4 (better 38...Be7+/-) 39.Kf2?? (39.ed4 h5 40.h4+-) 39...Bf6 40.Ke2 g4 41.Kd3 (41.fg4 fg4 42.Kd3-+) 41...gf3 42.Kd2 Be5 (better 42...Bc3! 43.Kd3 h5-+) 43.Ke1 Ke6 44.Kf2 Kd5 45.Kf3 f4 46.Ke2?? (46.ef4 Bg7 Combination; 46.gf4 Bc3 Combination) 46...fe3 (46...fg3!? 47.Kf3-+) 47.Ke3 Ke6 48.Kf3 (better 48.g4-+) 48...Bf6?? (48...Kf5 49.h3-+) 49.Kg2?? (better 49.Kg4=) 49...Bg7 (49...Kf5 50.Kf3-+) 50.Kf3 (50.g4 Bc3-+) 50...Kf5 51.h3 Kg6 52.g4 (52.Kf4 Bf8-+) 52...Kg5 53.Kg3 Kg6 (better 53...Be5 54.Kg2 Kh4-+) 54.h4?? (54.Kf3 Bc3 55.h4 Be1-+) 54...Kh7?? (54...Be5 55.Kf3-+) 55.Kf3? (55.Kf4 Bd4 56.g5 h5 57.g6 Kg6=+) 55...h5 56.Ke4 (56.gh5 Kh6 Decoy) 56...hg4 57.Kf4 Kh8 58.Kg4 Bh6 59.Kf5 Bg7 60.Kg4 Bh6 61.h5 Bg7 62.Kf5 Bh6 0-1. ClayPigeons (2085) - joaopauloaraxa (2280), Rated Bullet game, lichess.org, 2019.

5.e3 c3 6.Nc3 Be7 7.Nf3 0-0 8.d4 b6 9.a4 Bb7 10.Bd3 c5 11.bc6 (11.0-0!?+=) 11...Nc6= 12.0-0 Nb4 13.Be2 Rc8 14.Qb3 Nbd5 15.Nb5 (15.Rfc1 Nc3 16.Bc3 Qd6=) 15...a6=+ 16.Nc3 Nc3 17.Bc3 Bd5 18.Qb2 Ne4 19.Be1 a5 20.Bb5 (20.Rb1 Rb8=) 20...Bc4 (20...Bd6 21.Ba6 Rb8 22.Rc1=) 21.Bc4 Rc4 22.Ne5 Rc8 23.f3 Nf6 (23...Nd6 24.Qb3=) 24.Bd2 Nd5 (24...Bd6 25.Rac1 Be5 26.de5 Rc1 27.Rc1=) 25.Rfc1 Bb4 26.Nc6 (26.Rc8 Qc8 27.Bb4 Nb4+=) 26...Qd7 (26...Bd2!? 27.Qd2 Qe8=) 27.Nb4+/- (27.Bb4?! ab4 28.Ne5 Rc1 29.Qc1 Qc8=) 27...Nb4 (27...ab4 28.Bb4 Rc1 29.Rc1+/-) 28.Bb4 Rc1 29.Rc1 ab4 30.Qb4 Ra8 31.Ra1 (31.Rc4 Qd5+/-) 31...h6 32.Qb6 Ra4 33.Ra4 Qa4 34.Qb8 Kh7 35.Qb1 Kg8 36.Qd3 Qa1 37.Kf2 Qb2 38.Kg3 Qb8 39.f4 Qd6 40.h3 Qd5 41.e4 Qh5 42.Qe3 Qg6 43.Kh2 Qf6 44.g4 Qe7 45.Kg3 h5 (45...g5 46.e5+-) 46.g5 (46.gh5 Qa7+-) 46...g6 47.h4 (47.Qb3 Qc7 48.Kf3 Qc1+-) 47...Kg7 48.Kf3 (48.Qc3 Qb7 49.d5 Kh7+-) 48...Qb4 49.Qd3 White prepares the advance d5 (49.d5 Qc4 50.de6 Qe6+-) 49...Qb2 (49...Qe1!?+=) 50.d5+/- Qh2 51.Qd4 (51.Qd4 Kg8 52.Qe5 Qh4 53.Ke2+=) 1-0. ClayPigeons (2155) - iamletmethink (2210), Rated Bullet game, lichess.org, 2021.

5.e3 Bc5 6.Bc4 0-0 7.Nf3 c6 8.a4 cb5 9.ab5 Nbd7 10.d4 Bb4 11.Nbd2 Nb6 12.Bd3 Nbd5 13.Qb3 a5 14.ba6 ba6 15.0-0 a5 16.Nc4 Ba6 17.e4 (17.Rfc1!?=) 17...Nf4=+ 18.Rfd1? (better 18.Nfe5!?=+) 18...Nd3-+ 19.Rd3 Ne4 20.Ba3? (better 20.Re3 Nf6 21.Nce5-+) 20...Ba3 21.Ra3 (21.Na3 a4 22.Qd1 Bd3 23.Qd3 Qd5-+) 21...Nd6 (better 21...Rb8 22.Qc2 Bc4-+) 22.Nd6 Bd3 (22...Qd6?! 23.Re3-/+) 23.Nf7 (23.Nb7 Qc7 24.Nc5 Be4-+) 23...Rf7 (better 23...Qc8 24.Ne1 Qc1 (24...Rf7?! 25.Nd3 Rb8 26.Qa2-+; 24...Kf7?! 25.Nd3 Rd8 26.Ra4-+) 25.Qe6 Bc4 (25...Qa3?? 26.Nh6 Kh8 27.Qg8 Rg8 28.Nf7; 25...Rf7?! 26.Rd3 Kh8 27.Qe3-/+) 26.Nh6 Kh8-+) 24.Qd3 Qd6 25.Ne5 Rf5 26.Qe4? (26.Rc3 Rd8 27.Nf3 a4-+) 26...Raf8 (better 26...Qa3!? 27.Qa8 Rf8 28.Qa6-+) 27.Ra5 Rf2 28.h3 (28.g3 Qb4 29.Ra1 Qd2-+) 28...Rf1 (28...R2f4 29.Qe3 Rd4 30.Ra1-+) 29.Kh2 Rd1 (better 29...R1f4 30.Qc6 Rd4 31.Qd6 Rd6-+) 30.Ra7?? (better 30.Ra8 Rd4 31.Rf8 Kf8 32.Qf3 Ke7 33.Qf7 Kd8 34.Qg8 Kc7 35.Qg7 Kb6 36.Qg3-+) 30...Rd4 31.Qe2 Rf5 (better 31...Rd5-+) 32.Qb2?? (32.Ra8 Rf8 33.Ra7-+) 32...Qe5-+ 33.Kg1 Rd1 0-1. ClayPigeons (2210) - armkr (2205), Rated Bullet game, lichess.org, 2021.

5.e3 Qd5 6.Nc3 Qd8 7.Bc4 Bb4 8.Nf3 0-0 9.0-0 Bd6 10.Qc2 b6 (10...a6!?+=) 11.Ne4+/– Nbd7 12.Nf6 (worse is 12.Nd6 cd6 13.Rfc1 Bb7+=) 12...Nf6 13.e4 e5 (13...Be7!?+/–) 14.Ne5 Bb7 (14...Qe8 15.Nf3 Qe4 16.Qe4 Ne4 17.Bd5+-) 15.Nc6 (better is 15.Nf7 Rf7 16.Bf7 Kf7 17.Qb3 Nd5 18.ed5+-) 15...Bc6+/– 16.bc6 Bh2? (better is 16...Re8+/–) 17.Kh2+- Ng4 18.Kg3 (better is 18.Kh3 Qg5 19.Qc3 Nf6+-) 18...Qg5 19.f4 Qg6 20.Kf3 Nh2 21.Kf2 Nf1 22.Rf1 Qg4 (22...Rfe8 23.Be5+-) 23.g3 (23.Be5 Qg6+-) 23...Qh3 24.Rg1 Qh2 25.Rg2 Qh1 (25...Qh5 26.Kg1+-) 26.Qc3 (26.Be5 Kh8+-) 26...Qh6 27.Qe5 Rae8 28.Qf5 (better is 28.Qc7 Re4 29.Ba3 Rc4 30.Bf8 Qc6 31.Qb8+-) 28...Qg6? (28...Qc6 29.Rh2 Qg6 30.Qg6 hg6 31.Ke3+-) 29.Bd5 (better is 29.Qg6 hg6 30.Bd5+-) 29...Qf5+/– 30.ef5 Rd8 31.f6?? (better is 31.Bb3 Rd2 32.Kf1+-) 31...Rd5–+ 32.fg7 (better is 32.d4–+) 32...Rd2 33.Ke1 (33.Kg1 Rfd8 34.Be5 Rg2 35.Kg2 Rd2 36.Kf3 Ra2 37.Bc7 Rc2–+) 33...Rg2 34.gf8Q Kf8 35.Be5 Rg3 36.Bc7 Rc3 (36...Ke7 37.Be5–+) 37.Bd6 (37.Bb8 Rc6 38.Ba7 Ke7–+) 37...Ke8 38.c7 Kd7 39.Be5 (39.Kd2 Rc5 (39...Kd6 40.Kc3 Kc7 41.Kd4–+) 40.Bc5 bc5–+) 39...Rc5 (39...Ra3 40.Kd1–+) 40.Bg7 (40.a3 Ke6 41.Ke2 f6–+) 40...Rc7 41.Kd2 Ke6 42.Be5 Rc4 43.Kd3 Kd5 44.a3 b5 45.Ke3 (45.Kd2 h5–+) 45...a6 (better is 45...Re4 46.Kd2 Re5 47.fe5 Ke5 48.Kc3–+) 46.Bf6 a5 (better is 46...Ra4 47.Bb2 Kc4–+) 47.Be7 (47.Bg7–+) 47...Re4 48.Kf3 (48.Kf2 Re7 49.f5 Re5–+) 48...Re7 (48...Re7 49.Kg4 b4 50.ab4 ab4–+) 0–1. GuestQRYP – guesthalawani, freechess.org, 2017.

5.e3 Be7 6.Bc4 Bd7 7.Nf3 c6 8.a4 0-0 9.0-0 cb5 10.ab5 Qc7 11.Qb3 a6 12.Be5 Qb6 13.Bd4 Qc7 14.Rc1 Bb5=+ 15.Rc2 Bc4 16.Rc4 Nc6 17.Bb6 Qd7 18.d4 Rfc8 19.Nbd2 h6 20.Qa4 Nd5–+ 21.Qb3 Nb6 22.Qb6–/+ Qc7 23.Rb1 Qb6 24.Rb6 Nd8 25.Ne5 Bf6 26.Nd7–/+ Be7 27.Nc5 Bc5–/+ 28.dc5 Rc6 29.Ne4 Rac8 30.Rcb4? Rb6 31.Rb6 f5 32.Nd6 Rc5 33.g3 Rc6 34.Rc6 bc6 35.Kf1 Kf8 36.Ke2 Ke7 37.Nc4 Kd7 38.Kd3 Nf7 39.Kd4 Nd6 40.Ne5 Kc7 41.Nd3 Nf7 42.f4 Kd6 43.Nc5 Nd8 44.Na6 Nb7 45.Kc4 h5 46.h3 g6 47.h4 Na5?? 48.Kb4= Nb7 49.Kc4 e5 50.Nb8 ef4 51.ef4 Kc7 52.Na6–/+ Kb6 53.Nb4 Nd6 54.Kd3 Ne4 55.Nc2 c5 56.Ne3 Kb5 57.Nc4 Kb4 58.Ne5 Kb3 59.Nc4 Nf2 60.Ke2 Kc4 61.Kf2 Kc3 62.Ke2 Kc2 0–1. Pruvost,A – Obert,Julien, 8th Open, La Fere FRA, 2009.

5.a4 a6 6.Nc3 ab5 7.ab5 Ra1 8.Ba1 dc4 (8...d4 9.Na4=+) 9.e3= cb5 10.Nb5 Qd5?? (10...Be7=) 11.Nc3 (better 11.Nc7 Ke7 12.Nd5 ed5 13.Bf6 gf6 14.d3+-) 11...Qd8 (11...Qc6!?=+) 12.Bc4= Bb4 13.Qb3 Nc6 14.Bb5 (14.Nf3 0-0=) 14...Be7 (14...Qa5 15.Qb1=) 15.Nf3 0-0 16.0-0 Qb6 17.Rb1 Qc5 18.d4 Qd6 19.Bb2 Na5 20.Qb4?? (better 20.Qa4 Nc6 21.e4+=) 20...Qb4-+ 21.Ne5 (21.Bd3 Bd7-+) 21...Nc6! 22.Nd3 (22.Bc6 bc6 Combination; 22.Nc6 bc6 Combination) 22...Qd6 23.Ba4 (23.Bc6 Qc6 24.Ne5 Qd6-+) 23...Bd7 (23...Ng4 24.g3-+) 24.Nb5 (24.Nc5 Ng4 25.g3 e5 26.Nd7 Qd7-+) 24...Qb8 25.Nc3 (25.Ba3 Ng4 26.g3 Ba3 27.Na3 Qa8-+) 25...Nd5 (25...Nb4 26.Ba3 Nd3 27.Be7 Ba4 28.Na4-+) 26.Ne4 (26.Bb3 Nc3 27.Bc3 Rc8-+) 26...f5 (26...Ncb4!? 27.Nb4 Ba4 28.Nd5 ed5 29.Nc3-+) 27.Nec5 Bc5 28.Nc5 Bc8 29.Ba3 (29.Ra1 Ncb4-+) 29...Qa7 (better 29...Nc3 30.Ra1 Na4 31.Na4-+) 30.Rb7 (30.Ra1-+) 30...Bb7 31.Ne6 Rf6 (31...Qa4 32.h3 Rf6 33.Ng7 Qd1 34.Kh2 Nc3 35.Bb4 Ne2 36.Be1 Qe1 37.h4 Qg1 38.Kh3 Qh1) 32.Nc5 Na5 (32...Qa5 33.h3 Qe1 34.Kh2-+) 33.Bc1 Nc4 (33...Nc3!? 34.Bc2 Ne2 35.Kf1 Nc1 36.g3-+) 34.h3 Bc6 35.Bb3 Na5 (better 35...Qa1 36.Kh2-+) 36.Bd1 Nb7 37.Bd2 Nc5 38.Kf1 Nd3 (38...Qa1 39.Bc1 Qc1 40.Kg1 Qd1 41.Kh2 Nc3 42.f3 Ne2 43.h4 Qg1 44.Kh3 Qh1) 39.Ke2 Nc1! (39...Nc1 40.Bc1 Qa2 41.Ke1 Bb5 42.e4 fe4 43.Be3 Rf2 44.Bc2 Rf1 45.Kd2 Qa5) 0-1. ClayPigeons (2200) - Art1980v (2035), Rated Bullet game, lichess.org, 2020.

5.a4 Bd6 6.e3 0-0 7.Nf3 a6 8.d4 dc4 9.Bc4 ab5 10.ab5 Ra1 11.Ba1 cb5 12.Bb5?? (better 12.Bd3=+) 12...Qa5-+ 13.Nc3 Bb4 14.Bd3 Bc3 15.Bc3 Qc3 16.Ke2 (16.Qd2 Qa1 17.Qd1 Qa5 18.Qd2 b6-+) 16...b6 17.Ne5 (17.Qa1 Qb4-+) 17...Nbd7 18.Nf3 (18.Qa1 Qb4 19.Rb1 Qd6-+) 18...Bb7 19.Qb1 Ra8 (19...Rc8 20.Rd1-+) 20.Rc1 Qa3 21.Rc2 (21.h3 Bf3 22.Kf3 e5-+) 21...Ba6 (21...Qd6 22.h3-+) 22.Ne1 (22.Ba6 Qa6 23.Ke1 Nd5-+) 22...h6 (22...e5 23.Qb2 Qa5 24.f3-+) 23.f3 Nd5 24.Ra2 (24.Qb2 Qd6 25.Ba6 Ra6 26.g3-+) 24...Bd3 25.Nd3 Qa2 26.Kf1 Qb1 27.Kf2 Ra2 28.Kg3 Qd3 29.e4 (29.Kh4 g5 30.Kg3 Qe2 31.Kg4 Qg2 32.Kh5 Qh3) 29...N5f6 (29...Nf4 30.Kf4 Rg2 31.d5 g5) 30.e5 (30.h4 Qc2 31.Kf4 Nh5 32.Kg4 Qg2 33.Kh5 Qf3) 30...Qd4 (30...Qg6 31.Kh4 Qg5 32.Kh3 Qg2 33.Kh4 Qh2) 31.h4 (31.Kh3 Qd2 32.ef6 Qg2 33.Kh4 Qh2 34.Kg4 Nf6) 31...Qe5 (31...Qf2 32.Kf4 Ra4) 32.Kh3 Qf4 33.h5 Qg5 (33...Nh5 34.g3 Qg3) 34.g4 Ng4! 35.Kg3 (35.fg4 Qe3 Mate attack) 35...Qe5 (35...Nge5 36.Kh3 Qh5 37.Kg3 Qh2) 36.Kh4 (36.f4 Ra3 37.Kg2 Qe4 38.Kf1 Ra1) 36...Ngf6 (36...Qh2 37.Kg4 Nf6) 37.f4 Qf4 38.Kh3 Ra3 (38...Qg4) 39.Kg2 Qd2 40.Kf1 Ra1 0-1. ClayPigeons (2205) - sr_oscuro (2170), Rated Bullet game, lichess.org, 2020.

5.cd5 ed5 6.Nf3 0-0 7.d3 (7.Nc3 a6 8.e3 ab5 9.Bb5 Nc6=+) 7...Re8 8.Nbd2 c5 (8...a6 9.a4-/+) 9.bc6 bc6 (9...Nc6 10.e3-/+) 10.e3 (10.Rb1 Bd6-/+) 10...Ba6 (10...c5!?-/+) 11.Be2=+ Qa5 (11...Nbd7 12.0-0=) 12.0-0= Nbd7 (12...c5 13.Rb1=) 13.Nd4 Rac8 14.N2b3 (14.Rc1 Bb5=) 14...Qa4 15.Nf5 Bf8 16.Nbd4 (16.Nd2 Qd1 17.Rad1 c5=+) 16...Ne5?? (better 16...Qd1 17.Rfd1 c5=+) 17.Qa4+- (17.Qa4 Bd3 18.Nc6 Be2 19.Ne5+-) 1-0. Mayjin (2305) - mravecuk (2345), Rated Blitz game, lichess.org, 2017.

5.e3 0-0 6.Nf3 dc4 7.Bc4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3).

5.e3 dc4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4).

5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.bc6 (8.Nf3+=) 8...bc6 9.Nf3 Nbd7 10.Nbd2 Be7 11.e3 0-0 12.Be2 Qc7 13.0-0 c5 14.c4 Bb7 15.Qc2 Rc8 16.Rb1 Bd6 17.h3 Bc6 18.Bc3 e5 19.cd5 Bd5 20.e4 Ba8 (20...Bc6!?+=) 21.Nc4+/– Re8 22.Qb2 h6 23.Bd1 Nh7 (23...Kh7 24.Qa2 Qc6 25.Ba4+- (25.Nd6?! Qd6 26.Bc2 Qe7+/–)) 24.Ba4 Rb8 25.Qc2 Rb1 26.Qb1 Nhf8 27.Qb5 f6? (better is 27...Qb8+-) 28.Nh4 Qb8 29.Nf5 (better is 29.Nd6 Qd6 30.Nf5+-) 29...Qb5+/– 30.Bb5 Bc7 31.Nce3 Kh7 32.Ne7 g6 33.N3d5 Bd6 34.Bc6 ½–½. Wilczewski,Piotr (1905) – Salamon,Jan (1820), 47. Miedzynarodowy Festiwal Szachowy Poland, 2011.

5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd6 8.Nf3+=.

5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.e3 Bd7 9.d4 0-0 10.c4 dc4 11.Bc4 Qe8 (11...c6 12.Bd3=+) 12.Nc3 Bb4 (12...c6=+) 13.Nge2 (13.Qb3 Qe7=) 13...Bc3 (better 13...Bb5 14.Bb5 Qb5–/+) 14.Nc3+= c6 15.bc6 (15.Qb3!?+=) 15...Bc6= 16.0-0 Qd8 (16...Bg2 17.Kg2 Qc6 18.Qf3 Qc4 19.Qb7=) 17.Re1 Nd5 (17...Qa5 18.Qe2+=) 18.Nd5 Bd5 19.Bd5 Qd5 20.Qg4 (20.e4 Qd6+=) 20...Nc6 21.e4 Qd7?? (better 21...Qa5 22.Rb1 Ra8=) 22.d5!+- Threatening mate... how? 22...Nd8 (22...Qd5 23.Qg7 A classical mating theme) 23.Qg7 1–0. aravind555 (1635) – timothy1972b (1655), lichess.org, 2020.

5.a4 Bd6 6.Nf3 (6.e3 e5 7.Nf3 ab5 8.ab5+=) 6...ab5 7.ab5 Ra1 8.Ba1+=.

5.a4 Bd7 6.e4 (6.c4 Bb4 7.Nd2 dc4 8.dc4–/+) 6...de4 7.de4 Ne4 8.Bd3–/+.

5.ba6 A) 5...Ra6 6.Nd2 (6.Nf3 Rb6 7.Qc1 Bb4 8.Nbd2–/+) 6...Nc6 7.Ngf3 Ba3 8.Ba3–/+; B) 5...Na6 6.e3 (6.Nf3 Bd6 7.e3 Qe7 8.Nbd2–/+) 6...Bd6 7.Nf3 Qe7 8.Be2–/+.

5.e4 de4–/+ 6.c4 Bb4 7.Bc3 Bc5 8.d4 Be7 9.a4 c5 10.d5 (10.a5 0-0–/+) 10...ed5 11.cd5 Qd5 12.Qd5 Nd5 13.Bg7 Rg8 14.Bb2 Nb4 15.Kd1 Nd3 16.Bd3 ed3 17.g3 Bg4 18.f3 Be6 19.Nd2 c4 20.Rc1 ab5 21.ab5 Rg5 22.Nc4 Ra2 23.Kd2 (23.Bd4–+) 23...Rb5 24.Kd3 Bc4 (24...Rab2?! 25.Nb2 Rb2 26.Ne2–+; 24...Rbb2?! 25.Nb2 Rb2 26.Ne2–+) 25.Rc4 Rbb2 26.Nh3 Nc6 27.Re1 f5 (worse is 27...Rh2 28.Nf4 Ra3 29.Rc3 Nb4 30.Kd4 Nc2 31.Rc2 Rc2 32.Re5 Rf3 33.Nd5 Rd2 34.Kc4 Rd5 35.Rd5 Rg3 36.Rb5–+) 28.Rcc1 Ra3 29.Rc3 Nb4 (29...Nb4 30.Kd4 Rd2 31.Kc4 b5 32.Kb5 Rc3 33.Re7 Ke7 34.Kb4 Rc1 35.Nf4 Rb2 36.Ka3 Rb8 37.Nd5 Kd6 38.Nb4 Rb1 39.Ka4 R1b4 40.Ka5 Rb1 41.h3 Ra8) 0–1. Slupski,Mark – Clark,Stephen L (1965), BCCA/2011/CanF ENG, 2011.

5.a4 Bb4 6.Nd2 cb5 7.c3 Bd6 8.ab5 Bd7 (8...0-0 9.Ngf3+=) 9.c4= dc4 10.dc4 e5 11.Ngf3 Qe7 12.e3 0-0 13.Be2 a5 14.c5 Bc5 15.Ne5 Be6 16.0-0 Nbd7 17.Nef3 (17.Nd7 Nd7 (worse is 17...Bd7 18.Bf6 gf6 19.Bd3+/–) 18.Bd3 Bb4=) 17...b6 (17...Bb4 18.Nd4=) 18.Nb3 Rfd8 (18...a4 19.Nc5 Nc5 20.Nd4=) 19.Nbd4+= Bd4 20.Nd4 Nb8 (20...Bd5 21.Nc6 Bc6 22.bc6+=) 21.Qb1 Bd5 22.Nf5 Qe8? (22...Qe6!? 23.f3 g6 24.Nh6 Kf8+/–) 23.Bf6 (23.Ng7 Qe4 24.Qe4 Ne4+- (24...Be4?? 25.Bf6 Rd5 26.Nh5+-)) 23...gf6 24.Ra4 (better is 24.Rd1 Rd7 25.Ra4+-) 24...Qf8?? (better is 24...Nd7+/–) 25.Rh4+- Nd7 (25...Qe8 26.Rd1 Qe5+-) 26.Ne7!! Qe7 Blocks the square `8 27.Qh7 Demolishes the pawn shield 27...Kf8 28.Qh8 1–0. Riveline,Maurice – Duval,L, FRA–ch op Seniors, 1998.

5.a4 Bd7 6.c4 a6+=.

5.a4 Bd7 6.bc6 Nc6 7.Nd2 a5 8.Ngf3 Bd6 9.g3 0-0 10.Bg2 Re8 11.0-0 Rc8 12.c4 Be7 13.Qb3 Qc7 14.Rfc1 Qb8 15.e3 Nb4 16.Be5 Bd6 17.Bf6 gf6 18.h3 Kh8 19.Nh2 e5 20.cd5 Rc1 21.Rc1 Rg8 22.e4 h5 (22...Qe8 23.Ra1+=) 23.Ndf3 Qa7 24.Qd1 (better is 24.Nf1+/–) 24...Ba4?? (better is 24...Rg3! 25.d4 Rg7=) 25.Qa4+- Nd3 26.Rf1 Bc5 27.Qc2 Nf2 28.Rf2 Rg3 29.Qd2 Bf2 30.Qf2 Qf2 31.Kf2 Rg8 32.Bf1 a4 33.Nd2 a3 34.Nhf3 Rc8 35.Bc4?? (better is 35.Be2+-) 35...Rc4!–+ 36.Nb3 (36.Nc4 a2 Passed pawn) 36...Rc2 37.Nfd2 a2 38.Ke1 Rc1! 39.Ke2 (39.Nc1 a1Q Pinning (39...a1Q Decoy)) 39...a1Q 40.Na1 Ra1 41.d6 Ra8 0–1. Martinez Pastor,Francisco – Zamora Pastora,Roger, Madrid–ch Veterans, 2009.

5.a4 Bd7 6.Nf3 Qc7 7.c4= dc4 (7...cb5 8.cb5 a6 9.Nc3+=) 8.dc4 cb5 (8...Bb4 9.Nbd2=) 9.cb5 Bb4 10.Nbd2 0-0 11.e3 Re8 (11...Ne4 12.Bd3 Nd2 13.Nd2=) 12.Bd3 (12.Bf6 gf6 13.Bd3 f5+=) 12...e5 13.0-0 e4 14.Ne4 (better is 14.Bf6!? ed3 15.Rc1+=) 14...Ne4–/+ 15.Be4 (15.Qb1 Nc3 16.Rc1 Qa5 17.Bh7 Kh8=) 15...Re4 16.Qd5 Rc4 17.Rac1 (17.Rfc1 Be6 18.Rc4 Qc4 19.Qd8 Bf8 20.Bg7 Kg7 21.Qg5 Kh8 22.Qf6 Kg8 23.Qg5 Bg7 24.Qd8 Bf8 25.Qg5 Bg7 26.Qd8 Bf8 27.Qg5=) 17...Be6+= 18.Rc4 Qc4 (18...Bd5?? 19.Rc7 Bf8 20.Rc8+-) 19.Qd8 Bf8 20.Ba3? (better is 20.Bg7 Qc8 21.Qc8 Bc8 22.Bf8 Kf8 23.Rc1+=) 20...Qc8–+ (20...Qc8 21.Qc8 Bc8 22.Bf8 Kf8–+) 0–1. Stoklas,V – Sinkko,T, corr ICCF EU/M/Gr/338 (year?).

5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd7 8.e3 c6 9.Nc3 Bb4 10.Nge2 cb5 11.Qb1 Na6 12.g3 Ne4 13.Bg2 Nc3 14.Bc3 Bc3 15.Nc3 0-0 16.0-0 Qa5 17.Ne2 b4 18.Rc1 Bb5 19.Bf1 h5 20.c3 Be2 21.Be2 bc3 22.Qb7 Rb8 23.Qa6 Qb4 24.Qd3 Rc8 25.Bd1 Rc7 26.f4 f5 27.Kf2 g6 28.Kf3 Kg7 29.h3 Kf6 30.Qc2 Qb2 31.Be2 1–0. axtur777 – thevicc, lichess.org, 2019.

5.a4 c5 6.c4 dc4 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 Qa5 10.Bc3 Qb5 11.dc5 Qc5 12.Bf6 gf6 13.Qa4 b5 14.Qa8? c3 15.Qb8 c2 16.Nc3 Qc3 17.Nd2 c1Q 0–1. iczker – mowiszwygrale, kurnik, 2011.

5.c3 Ba5 6.a4 c6 7.e3 cb5 8.ab5 b6 9.Nf3 0-0 10.Be2 a6 11.0-0 ab5 12.Bb5 Bd7 13.Bd7 Qd7 14.Nbd2 Nc6 15.Nb3 Rfe8 16.Na5 ba5 17.Ba3 Ne4 18.Qc1 Rac8 19.Qb2 e5 20.Rfc1 ed4 21.Nd4 Nd4 22.cd4 Rc1 23.Rc1 Rc8 24.Rc8 Qc8 25.h3 h5 26.Qb5 Qc2 27.Qf1 a4 28.f3 Ng3 29.Qf2 h4 30.Qc2 1–0. axtur777 – Bodegroes, lichess.org, 2019.

5.c3 Bd6 6.e3 0-0 7.Nf3 c5 8.dc5 Bc5 9.c4 Nbd7 10.cd5 Nd5 11.Be2 Qa5 (11...Bb4 12.Nbd2=) 12.Nbd2= N7b6 13.a4 Rd8 (13...Bb4 14.Bd3 Bc3 15.Qc2 Bb2 16.Qb2=) 14.0-0+= Ne3 15.fe3 Be3 16.Kh1 Bd2 17.Qc2 Bb4? (17...e5 18.Be5 g6+/–) 18.Ng5+- f5 19.Rf5 ef5 20.Qb3 Nd5 21.Bf3 Kf8 22.Bd5 Rd7 23.Bf7 Rd6 (23...Bc5 24.Bc3 Qc3 25.Nh7 Ke7 26.Qc3 Kf7 27.Qc5+-) 24.Bh5 Be6 (24...Ke7 25.Qf7 Kd8 26.Qe8 Kc7 27.Rc1 Bc5 28.Rc5 Kb6 29.Qe3 Rd1 30.Bd1 Qe1 31.Qe1 Bd7 32.Ne6 a6 33.a5 Ka7 34.b6 Kb8 35.Be5) 25.Ne6 Ke7 26.Ng5 Rf8 (26...Qb6 27.Be5 Rf8 28.Qb4+-) 27.Bg7 Rff6 28.Bf6 Kf6 29.Qf7 Kg5 30.Rf1 Qd8 (30...Qc7 31.Rf5 Kh6 32.Qc7 Rg6 33.Qf4 Kg7 34.Qb4 Kh6 35.Qf8 Rg7 36.Bf7 a6 37.Rh5) 31.Qg7 Kh5 (31...Rg6 32.Bg6 Qf8 33.Rf5 Qf5 34.Bh7 Kf4 35.Qd4 Kg5 36.h4 Kh5 37.Bf5 Bf8 38.Qf6 Bd6 39.g4) 32.Rf5 Kh4 1–0. chuckhar (2290) – olsime (1955), gameknot.com, 2014.

5.c4 b6 6.Nc3 Nbd7 7.Nf3 Bb7 8.e3 Bd6 9.dc5 bc5 10.cd5 ed5 11.a4 0-0 12.Bd3 d4 13.ed4 cd4 14.Ne2 Bb4 15.Kf1 Bf3 16.gf3 Nh5 17.Ng3 Qh4 18.Nh5 Qh5 19.f4 Qh3–/+ 20.Kg1 Nc5 21.Bf1= Qh4 22.Bd4?? Qf4?? 23.Bc5 Bc5–/+ 24.Qc2 Rac8 25.Qe2?? Rfe8–+ 26.Qb2 Re6 27.Bg2 Rg6 28.Rc1?? Qf3 29.Kf1 Qg2 30.Ke1 Qh1 31.Ke2 Qe4 32.Kf1 Qd3 33.Ke1 Re8 34.Qe2 Qe2 0–1. iczker – lenja, kurnik, 2011.

5.c4 b6 6.Nf3 Bd6 7.e3 Nbd7 8.Nc3 Bb7 9.Be2 a6 10.a4 ab5 11.ab5 Ra1 12.Qa1 0-0 13.0-0 Qc7 14.cd5 ed5 15.Rc1 Ng4 16.h3 Nh2 17.Nh2 Bh2 18.Kf1 Ra8 19.Qb1 Bd6 20.dc5 Nc5 21.Rd1 Be7 22.Nd5 Bd5 23.Rd5 Qh2 24.Ke1 Nb3 25.Qe4 Bb4?? 26.Kd1 Qg1–+ 27.Kc2 Na1 28.Ba1 Rc8?? 29.Bc4?? Qf2?? 30.Kb3+- Bf8 31.Bd3 Qd2 32.Qh7 1–0. iczker – lenja, kurnik, 2011.

5.c4 dc4 6.Nc3?? cd4–+ 7.Qa4 dc3 8.b6 Bd7 9.Qa7 Ra7 10.ba7 Na6 11.Bc3 Bc5 (11...Bc5 12.e3 Nb4–+) 0–1. iczker – niekka, kurnik, 2011.

5.c4 dc4 6.e3 Qa5 7.Bc3 Qb5 8.Na3 Qd7 9.Bc4? cd4–+ 10.Bd4? Be7 11.Bb5 Nc6 12.Qa4 0-0 13.Rc1 a6 14.Bc6 bc6 15.Qc6?? Qc6 16.Rc6 Ba3 17.Nf3 Bb4 18.Ke2 Bd7 19.Rc7 Bb5 20.Kd1 Rac8 21.Bb6 Rfd8 22.Nd4 e5 23.Rc8 Rc8 24.Nb5 ab5 25.Ke2 Nd5 26.Ba7 e4 27.Rd1 Nc3 (27...Nc3 28.Ke1 Nd1 29.Kd1 Bd6–+) 0–1. iczker – robitat (1785), kurnik, 2011.

5.c4 dc4 6.Nf3 b6 7.Nc3 Bb7 8.e3 Nbd7 9.Bc4 Bd6 10.0-0 Qc7 11.Qb3?? Bf3–+ 12.gf3 Bh2 13.Kg2 Bd6 14.Be6? fe6–+ 15.Qe6 Be7 16.d5 Qd6 17.Qf5 0-0 18.Qe6 Qe6 19.de6 Ne5 20.f4 Nd3 21.Ba3 Ne8 22.Rad1 Rd8 23.e4 Nf4 24.Kh2 Nd6 25.e5 Nf5 26.Ne4 Rd1 27.Rd1 Rd8 28.Rd8 Bd8 29.Bc1 Nd3 30.Bg5 Bg5 31.Ng5 Ne5 32.f4 Ng6 33.Nh3 Kf8 34.Kg2 Ke7 35.Kf3 Ke6 36.Ke4 Nd4 37.Ng5 Kf6 38.Nh7 Ke7 39.f5 Nf8 40.Ng5 Kf6 41.Nh3 Nf5 42.Nf4 g5 43.Nd5 Ke6 44.Nc7 Kd6 45.Ne8 Ke7 46.Nc7 Kf6 47.Nd5 Kg6 48.Ne7 Ne7 49.Ke5 g4 50.Kd6 g3 51.Ke7 g2 52.Kf8 g1Q 53.Ke7 Qd4 54.Ke6 Qb4 0–1. iczker – kszz, kurnik, 2011.

5.c4 cd4 6.Bd4 a6 7.a4? ab5 8.ab5 Ra1 9.Ba1 Bb4 10.Bc3 Bc3 11.Nc3 Qa5 12.Qd4?? Ne4–+ 13.f3 Qc3 14.Qc3 Nc3 15.Kd2 Na4 16.cd5 ed5 17.e4 Be6 18.Ne2 b6 19.Nf4 de4 20.fe4 Ke7 21.Bd3 Nc5 22.Bc2 Rd8 23.Kc3 Nbd7 24.Ra1 Nf6 25.Ra7 Rd7 26.e5 Nfe4 27.Kb2 Ra7 28.Nh5 Ra2 29.Kc1 Nb3 30.Kd1 Nc3 31.Ke1–+ Rc2 32.Ng7 Rg2 33.Nh5 Rh2 34.Nf6 Nd4 35.Ng8 Kf8 36.Nf6 Ncb5 37.Kd1 Nc6 38.Ne4 Ne5 39.Ng5 Nd3 40.Nf7 Nc3 (40...Bf7?!; 40...Kf7?!) 0–1. iczker – ludovrac, kurnik, 2011.

5.c4 cd4 6.Bd4 Bb4 7.Bc3 Qa5 8.Qb3 Bc3 9.Qc3 Qc3 10.Nc3 dc4 11.e4 0-0 12.Bc4 Bd7 13.e5 Ng4 14.Nf3? Rc8–+ 15.Nd2? Ne5 16.0-0 Nc4 17.Nc4 Rc4 18.Rac1 h6 19.Ne2 Rc1 20.Rc1 Bb5 21.Nd4 Ba6 22.Rc8 Kh7 23.Nf3 Be2 24.Ne5 f6 25.Nd7 e5 26.Rb8? Rb8–+ 27.Nb8 b5 28.Nc6 Bc4 29.a3 a6 30.Nb4 a5 31.Nc6 a4 32.f3 Kg6 33.Kf2 Kf5 34.Ke3 Ke6 35.Nb4 g6 36.g3 h5 37.h3 Bf1 38.Nc6? Bh3 39.Nd8 Kd5 40.Nf7 Be6 41.Nh8 g5 42.Ng6 Bf7 43.Ne7 Ke6 44.Nc6 Kd5 45.Ne7 Kc5 46.Kd3 Be6 47.Kc3 Kd6 48.Ng6 Bf5 49.Nf8 h4 50.gh4 gh4 51.Kb4 h3 52.Kb5 Bc2 53.Kb4 h2 54.Ng6 h1Q 55.Nh4 Qe1 56.Kb5 Qh4 57.Kb6 Qc4 58.f4 Qc5 59.Kb7 Kd7 60.Ka6 Bd3 61.Kb7 Qc6 62.Ka7 (62.Ka7 Qc7 63.Ka8 Be4). iczker – zeneknb55, kurnik, 2011.

5.c4 cd4 6.Bd4 Be7 7.Nf3 0-0 8.e3 Nbd7 9.Nbd2 b6 10.Bd3 Bb7 11.0-0 g6 12.Ne5 Ne5 13.Be5 dc4 14.Nc4 Rc8 15.Rc1 Nd5 16.e4 Nb4 17.Bb1 Bc5? 18.Bd6 Bd6 19.Qd6 Qd6 20.Nd6 Rc1 21.Rc1 Ba8 22.f3 Rd8 23.Nc8?? a5?? 24.ba6 Na6 25.Nb6 Bb7 26.e5 Kg7 27.Be4 Be4+= 28.fe4 Nb4 29.Ra1 Rd2 30.Nc4 Ra2= 31.Ra2 Na2 32.Kf2 Nc3 33.Ke3 Nb5 34.Nd6 Nc3 35.g4 Nd1 36.Kf4 Nf2 37.h4 h6 38.Ne8 Kf8 39.Nf6 Nd3 40.Ke3 Ne5 41.g5 hg5 42.hg5 Nc4 43.Kf4 Nd6 44.Nd7 Ke7 45.Ne5 Nc8 46.Nc6 Kd6 47.Nd4?? Ne7 48.Nb5=+ Kc5 49.Nc7 Kd6 50.Ne8 Kd7 51.Ng7?? Nc6–+ 52.e5 Nd4 53.Ke4 Ne2 54.Kf3 Ng3?? 55.Kf4?? Ke7 56.Kg3+= Kf8 57.Kf4 Kg7 58.Ke4 Kh7 59.Kf4 Kg7 60.Kg4 Kg8 61.Kf4 Kg7 ½–½. iczker – panczer, kurnik, 2011.

5.c4 Nbd7 6.Nc3 b6 7.Nf3 Be7 8.e3 Bb7 9.a4 0-0 10.dc5 bc5 11.Be2 Ng4 12.h3 Nge5 13.Ne5 Ne5 14.0-0 Nc4 15.Bc4 dc4 16.f3 Bf6 17.Qc2 Qc7 18.Ne4 Bb2 19.Qb2 Be4 20.fe4 Qg3 21.Qf2 Qg6 22.Qf4 Rad8 23.e5 Rd3 24.Qc4 Rd2 25.g4 Rfd8 26.Qc5 h6 27.Rf4 h5 28.Raf1 hg4 29.Rg4 Qh5 30.Rff4?? Qh3 31.Qe7 Rd1 32.Kf2 R8d2 0–1. iczker – lenja, kurnik, 2011.

5.dc5 Bc5 6.c4? 0-0 7.e3=+ b6 8.Nc3 Bb7 9.Nf3 Nbd7 10.Be2 Qc7 11.Rc1 dc4 12.Bc4 Rad8 13.Qb3 Ne4 14.Ne4 Be4 15.Be6 Bf3 16.Bd7 Bg2 17.Bc6? Bc6 18.bc6–/+ Qc6 19.0-0 Qg6 20.Kh1 Qe4 21.Kg1 Rd6 22.h3?? Rg6 23.Kh2 Bd6 24.Be5 Be5 25.f4 Bb8 26.Rg1 Rg1 27.Rg1 Qf3 28.Qb2 g6 29.Rg3 Qe4 30.h4 h5 31.Kh3 Bd6 32.Qf6 Be7 33.Qc3 Qf5 34.Kh2–+ Bh4 35.Rh3 Bf6 36.Qc4 Bg7 37.e4 Qf4 38.Kh1 Re8 39.Qf7 Qf7 40.Rh5 gh5 (40...gh5 41.Kg2 Qg6 42.Kf2 Rf8 43.Ke3 Qg3 44.Ke2 Rf2 45.Kd1 Qg1; 40...Qf1 41.Kh2 gh5 42.Kg3 Re4 43.a3 Be5) 0–1. iczker – oldmanfirst (1680), kurnik, 2011.

5.bc6 bc6 6.c4 Qb6 7.Qb3 c5 8.dc5 Bc5 9.e3 Nc6 10.Nc3 Nb4 11.Na4 Qa5 12.Bc3 Rb8 13.Nc5 Qc5 14.cd5?? Nd3!!–+ 15.Bd3 Rb3 16.ab3 Nd5 17.Bd4 Qb4–/+ 18.Ke2 Qb3 19.Nh3 0-0 20.Rhb1 Nc3 21.Bc3 Qc3 22.Ra7 Rd8 23.Rd1 Bd7 24.Rda1? Bc6–+ 25.Rc7?? Qa1 26.Rc6–+ Qb2 27.Bc2 g6 28.Kf3 Rd5 29.Nf4 Qf6 30.Rc8 Kg7 31.Kg3 Rd2 32.Be4 Qg5 33.Kf3 f5 34.Ne6+- Kf6 35.Ng5 fe4 36.Ne4 Ke5 37.Nd2 Kf6 38.Rh8 Kg7 39.Rh7! Kh7 40.Ne4 Kg7 41.Ng3 Kf6 42.Ne4 Kf5?? 43.Kg3 Ke5 44.Kg4 Ke6 0–1. iczker – atrodyta22, kurnik, 2011.

5.Nf3 cd4 6.Bd4 Be7 7.c4 dc4 8.Nc3 0-0 9.e3 b6 10.Bc4 Bb7 11.0-0 Nbd7 12.Bb3? Nc5 13.Bc5 Bc5 14.a4 Qd1 15.Rad1 Bf3 16.gf3 Rfd8 17.Ne4 Ne4 18.fe4 Kf8 19.Rd8 Rd8 20.Rd1 Rd1 21.Bd1 e5 22.Kg2 Ke7 23.Kf3 Kf6 24.Bb3 Kg6 25.Bd5 f6 26.Kg4 h5 27.Kg3 Kg5 28.h4 Kh6 29.Bf7 g6 30.Kf3 Kg7 31.Bd5 Bb4 32.Ke2 Be7 33.f4 ef4 34.ef4 f5 35.Kf3 Bh4 36.ef5 gf5 37.Be6 Kf6 38.Bd7 Be1 39.Be8 h4 40.Bh5 Ke6 41.Bg6? Kf6 42.Bh5–/+ Kg7 43.Ke3 h3 44.Bf3 h2 45.Bh1 Kf6 46.Kf3 Bd2 47.Kg2? Bf4–+ 48.Kf3 Ke5 49.Bg2–/+ Bd2 50.Bf1?? Bc3 51.Bg2? Bd4 52.Ke2 Kf4 53.Kd3 Bf2 54.Ke2 Kg3 55.Bc6 Bc5 56.Kd3 f4 57.Kc4 f3 58.Kd5 h1Q (58...h1Q 59.Ke6 Qh3 60.Ke5 f2 61.Bf3 f1Q 62.Bg4 Qf4 63.Kd5 Qfg4 64.a5 Qe6) 0–1. iczker – kkkris, kurnik, 2011.

5.a4 cb5 6.ab5 Bb4 7.c3 Bd6 8.c4 dc4 9.Nc3 Qb6 10.e4 Bb4 11.Bc4 Ne4 12.Qc2?? Qd4–+ 13.Qe4 Bc3 14.Bc3 Qc3 15.Ke2 Qa1 16.Nf3 Qh1 17.Ng5 Qh2 18.Ne6 fe6 19.Be6 Qh5 20.Bg4 Kf7 21.Bh5= g6 22.Qd5?? Be6–+ 23.Qb7 Nd7 24.Bf3 Rae8 25.Kf1? Bc4 26.Kg1 Re7 27.Qa6 Re1 28.Kh2 Rhe8 29.Qb7 Be6 0–1. iczker – zeneknb55, kurnik, 2011.

5.a4 Bd6 6.c4 dc4 7.Nc3 Bb4 8.e3 Qa5 9.Rc1 Nd5 10.Nge2 cb5 11.ab5 Qb5 12.e4 Nc3 13.Bc3 Bc3 14.Rc3? 0-0 15.Nf4 Nc6 16.Bc4 Qb4 17.Qb3 Qb3 18.Bb3 Nd4 19.0-0? e5 20.Nd5 Ne2 21.Kh1 Nc3 22.Nc3 Be6 23.Be6 fe6 24.Rb1 b6 25.f3 Rfd8 26.h4 Rab8 27.Nb5 a5 28.Nc7 Rd6 29.Na6 Rc8 30.Rb5 Kf7 31.Re5 b5! 32.Rb5 Ra6 33.Rb7 Kg8 34.g4 a4 35.Rb2 a3 36.Ra2 Rb8 37.Ra1 a2 38.Ra2 Ra2 (38...Ra2 39.f4 Rb1) 0–1. iczker – chlop97 (1690), kurnik, 2011.

5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.d4).

5.Nf3 b6 6.c4 dc4 7.Nc3 Bb7 8.e3 Nd5 9.Bc4 0-0 10.0-0 h6 11.Nd5 ed5 12.Bd3 c5 13.bc6 Nc6 14.Rc1 Qe7 15.a4 Rac8 16.Bb5 Nb4 17.Rc8 Rc8 18.Ba3 a6 19.Bb4 Bb4 20.Bd3 Qd7 21.Qb3 a5 22.Ne5 Qe6 23.Bb5 Rc3 24.Qd1 Rc7 25.Qb3 Rc3 26.Qd1 f6 27.Nf3 Qc8 28.Ne1 Rc1 29.Qe2 Qc3 30.Nd3 Rf1 31.Kf1 Qa1 (31...Qa1 32.Ne1 Bc8=+). iczker – cibis (1650), kurnik, 2011.

5.a4 a6 6.c4 ab5 7.ab5 Ra1 8.Ba1 dc4 9.Nc3 Bb4 10.e3 Bb5 11.Nf3 Ne4 12.Qc2 Nc3 13.Bc3 Bc3 14.Qc3 Qd7 15.Bc4 Bc4 16.Qc4 Nc6 17.0-0 0-0 18.Rb1 b6 19.Rc1= Na5 20.Qc7 Qb5 21.Qc3 h6 22.Ne5 Qe2 23.Nc6 Rc8?? 24.Ne7+- Kh7 25.Nc8 b5 26.Qc2 Qc2 27.Rc2 Nb3 28.Rb2 Na5 29.Rb5 Nc6 30.Nd6 Kg6 31.Rb7 f5 32.Ne8 e5 33.Rg7 Kh5 34.Nf6 Kh4 35.g3 Kh3 36.Rh7 ed4 37.Rh6 1–0. iczker – audalyochess, kurnik, 2011.

5.a4 c6 6.c4? cb5 7.ab5 dc4 8.Nc3 Qc7 9.e3 Bb4 10.Nf3 Nd5 11.Rc1 Bb5 12.Be2 0-0 13.0-0 Nc3 14.Bc3 Bc3 15.Rc3 Nd7 16.Qc1 Rfc8 17.Rd1 Ba6 18.Qa3 Qc6 19.Ne5 Ne5 20.de5 b5?? 21.Bf3 Qc7 22.Ba8 Ra8 23.Qd6?? Qd6–/+ 24.ed6 Kf8 25.e4 Ke8 26.e5 Kd7 27.Ra3?? Bb7–/+ 28.Rb1 Bc6?? 29.Ra5?? a6 30.Rba1 Bb7 31.f4 c3 32.Kf2 b4 33.Rc5 Rc8 34.Rc8 Kc8 35.g4? c2 36.Ke3 b3 37.Kd2 b2 38.Rc1 bc1Q 39.Kc1 Be4 40.Kb2 a5 41.h4 a4 42.g5 a3! 43.Kc1 a2 44.Kb2 a1Q! 45.Kb3 c1Q (45...c1Q 46.d7 Kd7 47.Kb4 Qcc3 48.Kb5 Qaa5; 45...Qb1 46.Ka3 c1Q 47.Ka4 Qc4 48.Ka5 Qbb4) 0–1. iczker – kesi1, kurnik, 2011.

5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.Nd2 Qb6 10.bc6 bc6 11.Ngf3 Bb4 12.c3 Ba5 13.Be2 Kf8 14.0-0 Ba6 15.Ba6 Qa6 16.Qa4 Nb6 17.Qa2 g6 18.Nb3 Nc4 19.Nfd2 Nd2 20.Qd2 Kg7 21.Qa2 Ra8 22.Bb2 Ne4 23.Na5 Qa5 24.Qa5 Ra5 25.Ra1 Rb5 26.Ba3 Nc3 27.h3 h5 28.Bd6 Ne4 29.Be5 f6 30.Bf4 Rb2 31.Ra6 g5 32.Bd6 Nd6 33.Rc6 Ne4 34.Re6 Nf2 35.Rd6 Nd1 36.Rd5 Ne3 37.Rd7 Kg6 38.d5 Ng2 39.d6 Rd2 40.Rd8 g4 41.hg4 hg4 42.d7 g3 43.Rg8 Kf7 44.d8Q Rd8 45.Rd8 Ne3 46.Rd3 Nf5 47.Rf3 Kg6 48.Kg2 Kg5 49.Ra3 Kg4 50.Ra4 Kg5 51.Rb4 Kg6 52.Ra4 Kg5 53.Rb4 Ne3 54.Kg3 f5 55.Rb3 f4 56.Kf3 Nd5 57.Rb5 Kh4 58.Rd5 Kh3 59.Rf5 Kh2 60.Rf4 Kg1 61.Kg3 Kh1 62.Rf2 Kg1 63.Kf3 Kh1 64.Kg4 Kg1 65.Kg3 Kh1 66.Rf1 1–0. axtur777 – soeq, lichess.org, 2019.

5.e3 Nb6 6.a4 Ne4 7.Bd3 Nd6 (7...Qh4 8.Qe2=) 8.Nd2 Qg5 9.g3 Nbc4 10.Bc4 Nc4 11.Nc4 dc4 12.Qe2 Qd5 (12...Qg6!?=) 13.e4+- Bb4? (better 13...Qd8!?+-) 14.c3+- Qd4 15.cb4 c3 16.Ba3 c2 17.Ra2 Qc3? (better 17...c1Q 18.Bc1 Qb4 19.Kf1 a6+-) 18.Qd2 Qc4 (18...Qe5 19.f3+-) 19.Qc2 Qd4 20.Ne2 Qf6 21.0-0 h5 (21...0-0 22.Qc7 e5 23.f4 ef4 24.Rf4+-) 22.Bb2 e5 (22...Qg5 23.Qc7 0-0 24.Bd4+-) 23.Qc7 Bh3 24.Qe5 (better 24.Rd1 Rc8 25.Qe5 Qe5 26.Be5 Be6+-) 24...Qe5 25.Be5 Bf1 26.Kf1 f6 ½–½. Kislov,Leonid – Lunga,Oleg, 2013.

5.c4 dc4 6.Nc3 a6 7.a4 ab5 8.ab5 Ra1 9.Qa1 0-0 10.e4 Bb4–/+ 11.Bc4?? Ne4 12.Nge2 Qh4 13.0-0 Qg5?? 14.Ne4+- Qg6 15.f3 Nd7 16.Nf4 Qh6 17.Bc1 Qh4 18.g3 Qe7 19.d5 e5 20.Nd3 Bd6 21.Bb2 f6 22.Re1 Kh8 23.Nd6 cd6 24.f4 e4 25.Kf2 f5 26.Kg2 Qf7 27.Nf2 Nc5 28.Nh3 h6 29.Nf2 h5 30.Bd4 Qg6 31.Bc5 dc5 32.Qe5 Re8 33.Qc3 h4 34.Nh3 Qg4? 35.Be2 Qg6 36.Ng5 b6 37.Ne6! Be6 38.de6 Qe6 39.Qe5 Qe5= 40.fe5 Re5 41.gh4 f4? 42.h5?? f3–+ 43.Bf3 (43.Bf3 ef3 44.Kf3 Re1 45.Kf2–+). iczker – zeneknb55, kurnik, 2011.

5.c4 dc4 6.Nc3 Nd5 7.e4 Nc3 8.Bc3 a6 9.a4 ab5 10.ab5 Ra1 11.Qa1 Bd7 12.Bc4 0-0 13.d5 ed5 14.ed5 f6?? 15.d6+- Kh8 16.de7 Qe7 17.Ne2 Re8 18.0-0 c6 19.b6 Qc5 20.Bf6! Qc4 21.Bg7 Kg8 22.Bh8 Re7 23.Ng3 Na6 24.Bf6 Rf7 25.Bd4 c5 26.Bc3 Qb5 27.Ne4 Bc6? 28.Nf6 Kf8 29.Re1 Qb6?? 30.Re8 Be8–+ 31.Ne8 Ke8 32.Qe1 Re7 33.Qd2 Qd8 34.Qg5 Qd1 (34...Qd1 35.Be1 Re1) 0–1. iczker – bestegidio (1680), kurnik, 2011.

5.c4 dc4 6.e3 0-0 7.a4 Bb4 8.Bc3 Bc3 9.Nc3 Nbd7 10.Bc4 Nb6 11.Bd3 Nfd5 12.Nge2 Nc3 13.Nc3 Nd5 14.Nd5 Qd5 15.0-0 Rd8 16.Qc2 h6 17.Be4 Qd6 18.Rac1 Rd7 19.Rfd1 f5 20.Bf3 g5 21.d5 g4 22.de6 Qe6 23.Rd7 Bd7? 24.Bb7 Re8 25.Rd1 f4 26.Bd5 (26.Qc7?! fe3 27.Qc5 e2+-) 1–0. iczker – dawnysamotny, kurnik, 2011.

5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.d4).

4.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5).

4.e3 a5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a5).

4.e3 a5 5.c4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 a5).

4.e3 a5 5.Nf3 Nbd7 (--> 1.b4 a5 2.b5 Nf6 3.Nf3 e6 4.Bb2 d5 5.e3 Nbd7).

4.e3 Bc5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bc5).

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6).

5.a4 c5 6.c4 ab5 7.ab5 Ra1 8.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4).

5.a4 c6 6.Nf3 ab5 7.ab5 Ra1 8.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.Nf3)

5.a4 Bd6 6.Nf3 ab5 7.ab5 Ra1 8.Ba1 0-0 9.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1).

5.a4 Bd6 6.Nf3 ab5 7.ab5 Ra1 8.Ba1 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Nbd7 8.Nf3 Bd6).

5.a4 Nbd7 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 Nbd7 6.Nf3).

5.a4 Be7 6.Nf3 0-0 7.Be2 ab5 8.ab5 Ra1 9.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 0-0 9.Be2).

5.a4 Be7 6.Nf3 ab5 7.ab5 Ra1 8.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3).

5.Nf3 ab5 6.Bb5 c6 7.Be2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 a6 4.e3 ab5 5.Bb5 c6 6.Be2 d5 7.Nf3).

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1).

7.Ba1 c5 8.c4 Bd6 9.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3 Bd6 9.c4).

7.Ba1 c5 8.c4 Nbd7 9.Nf3 Bd6 10.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3 Bd6 9.c4 0-0 10.Be2 Nbd7).

7.Ba1 c6 8.bc6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.bc6).

7.Ba1 c6 8.c4 cb5 9.cb5 Nbd7 10.Nf3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 a6 4.a4 ab5 5.ab5 Ra1 6.Ba1 c6 7.c4 cb5 8.cb5 d5 9.e3 Nbd7 10.Nf3).

7.Ba1 Bd6 8.c4 0-0 9.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Bd6 8.Nf3 0-0 9.c4).

7.Ba1 Bd6 8.Nf3 0-0 9.Be2 Nbd7 10.0-0 c5 11.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3 Bd6 9.c4 0-0 10.Be2 Nbd7 11.0-0).

7.Ba1 Bd6 8.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Nbd7 8.Nf3 Bd6).

7.Ba1 Nbd7 8.Nf3 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 Nbd7).

7.Ba1 Be7 8.Nf3 0-0 9.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 0-0 9.Be2).

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6).

5.c4 Bb7 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4).

5.c4 Bb7 6.Nf3 Be7 7.Be2 c5 8.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

5.d4 Bb7 6.Nf3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.d4).

5.Nf3 Bb7 6.c4 c5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5).

5.Nf3 Bb7 6.c4 c5 7.Be2 Be7 8.0-0 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

5.Nf3 Bb7 6.c4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Nbd7).

5.Nf3 Bb7 6.Be2 Be7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 d5).

5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 Bb7 9.d4 Nbd7 10.Nbd2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4 Nbd7 10.Nbd2).

5.Nf3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Nbd7 5.Nf3 b6).

5.Nf3 Be7 6.c4 0-0 7.Be2 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.Be2 d5).

5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 b6).

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5).

5.a4 b6 6.c4 Bb7 7.Nf3 Nbd7 8.Be2 Bd6 9.0-0 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.a4 Bb7).

5.a4 Be7 6.c4 0-0 7.Nf3 a6 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

5.a4 Be7 6.Nf3 0-0 7.Be2 b6 8.c4 Bb7 9.0-0 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4).

5.c4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.c4)

5.c4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bd6 9.Nf3 Nbd7 10.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3 Bd6 9.c4 0-0 10.Be2 Nbd7).

5.c4 a6 6.a4 Be7 7.Nf3 0-0 8.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

5.bc6 Nc6 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.bc6 Nc6 6.Nf3).

5.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3).

5.Nf3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 TESTD320 7.Ba1 c5 8.Nf3).

5.Nf3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3).

6.c4 b6 7.d4 Bb7 8.Be2 c5 9.0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4).

6.c4 b6 7.Be2 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.Be2 d5).

6.c4 dc4 7.Bc4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3).

6.c4 c5 (no 7.bc6) (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0).

6.c4 c5 7.Nc3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4 c5 7.Nc3).

6.c4 c5 7.Be2 b6 8.0-0 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

6.c4 c5 7.Be2 b6 8.0-0 Bb7 9.d4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4).

6.c4 c6 7.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4).

6.c4 c6 7.a4 b6 8.Be2 Bb7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.c4 Bb7 6.Nf3 Be7 7.Be2 0-0 8.a4 c6).

6.c4 c6 7.Nc3 a6 8.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Nc3).

6.c4 Bd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4 Bd7).

6.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2).

6.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 0-0 9.Be2).

6.Be2 a6 7.a4 c5 8.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 a6 8.a4).

6.Be2 b6 7.0-0 Bb7 8.c4 c5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

6.Be2 b6 7.0-0 Bb7 8.c4 c5 9.Qc2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.Qc2).

6.Be2 c5 7.0-0 Nbd7 8.c4 b6 9.d3 Bb7 10.Nbd2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.Be2 0-0 7.0-0 d5 8.d3 c5 9.Nbd2 Nbd7 10.c4).

6.Be2 c5 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2).

6.Be2 c5 7.c4 b6 8.0-0 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

6.Be2 c5 7.c4 b6 8.0-0 Bb7 9.d4 Nbd7 10.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4 Nbd7 10.d4).

6.Be2 c5 7.c4 b6 8.d4 Bb7 9.Nbd2 Nbd7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.d4 d5 8.Nbd2 Nbd7 9.Be2 c5).

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 g6).

5.d4 Bg7 6.Nf3 0-0 7.c4 c6 8.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 g6 5.c4 c6 6.a4 Bg7 7.Nf3 0-0 8.d4).

5.g3 0-0 6.Bg2 c5 7.e3 b6 8.Ne2 Bb7 9.0-0 Nbd7 10.d3 Rc8 11.c4 d4 12.e4 e5 13.f4 Ng4 14.f5? Ne3–+ 15.Qe1 Nf1 16.Qf1 g6 17.g4 f6 18.Ng3 a6 19.a4 a5 20.Nd2 Kf7 21.h4 Ke8 22.Nf3 Rf7 23.Kh2 Nf8 24.Bc1 g5 25.h5?? h6–/+ 26.Bd2 Bd6 27.Qf2 Nd7 28.Rg1 Ke7 29.Ne1 Qg8–+ 30.Bh3 Rcf8 31.Nf1 Kd8 32.Qg3 Kc7 33.Ng2 Be4?? 34.de4+/– Re7 35.Qe1?? Qc4–/+ 36.Ba5 Qa4 37.Bd2 c4 38.Ng3 c3 39.Bc3 dc3 40.Qc3 Nc5 41.Ra1 Qb5 42.Ne3 Kb7 43.Nd5 Ne4?? 44.Ne4+/– Qe2?? 45.Bg2+- Qg4 46.Nd6 Kb8 47.Ra8! Ka8 48.Ne7 Kb8 49.Nc6 Ka8 50.Ne5 Qg2 51.Kg2 (51…fe5 52.Qc6 Kb8 53.Qb7) 1–0. MasterofDisaster – distaff, Caissa.com, 2004.

5.g3 c6 6.a4 cb5 7.ab5 Bd7 8.e3 0-0=+ 9.Nc3 Bb4 10.Be2 Qe8 11.Na2 Be7 12.c4 dc4–/+ 13.Nh3 Bb5–+ 14.Nc3 Ba6 15.e4 b5 16.0-0 Bb7 17.d4 a6 18.d5 ed5 19.ed5 Bd6 20.Rf2 Bc5 21.Qe1 Bf2 22.Qf2 Nd5 23.Qd4?? Nf6 24.Ne4 Nbd7 25.g4 h6 26.g5 hg5 27.Nhg5 Rd8 28.Nd6 Qe2 29.Bc3 Bf3 30.Re1 Qg2 0–1. MasterofDisaster – goshawk62, Caissa.com, 2004.

4.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.Nf3 e6 4.b5).

4.Nf3 a6 5.a4 Bd6 6.e3 0-0 7.Be2 ab5 8.ab5 Ra1 9.Ba1 c5 10.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c5 8.Nf3 Bd6 9.c4 0-0 10.Be2).

4.Nf3 a6 5.a4 Nbd7 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 Nbd7 6.Nf3).

4.Nf3 c6 5.a4 Bd6 6.e3 (--> 3.b5 c6 4.a4 d5 5.e3 Bd6 6.Nf3).

4.Nf3 c6 5.a4 Bd7 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd7 5.Nf3 c6 6.a4).

4.Nf3 c6 5.a4 Be7 6.e3 0-0 7.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 c6 7.a4).

4.Nf3 c6 5.e3 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6).

4.Nf3 c6 5.e3 Be7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 c6).

4.Nf3 Bd7 5.e3 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 Bd7).

5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3).

5.e3 Bb7 6.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.Be2).

5.e3 Be7 6.Be2 0-0 7.c4 Bb7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Be7 7.Be2 0-0).

5.c4 Bd6 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4).

5.c4 Nbd7 6.a4 Bd6 7.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.a4).

5.c4 Nbd7 6.e3 Bd6 (--> 1. b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7).

5.c4 Be7 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4).

5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3).

5.e3 Bd6 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.c4 c5).

5.e3 Bd6 6.c4 0-0 7.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.c4 c5 7.Be2).

5.e3 Bd6 6.c4 0-0 7.Be2 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0).

5.e3 Bd6 6.c4 b6 7.Be2 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 d5 7.Be2 Bd6).

5.e3 Bd6 6.d3 b6 7.c4 Bb7 8.Be2 0-0 9.0-0 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.d3 Bb7).

5.e3 Bd6 6.Be2 Nbd7 7.a4 0-0 8.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.a4).

5.e3 Nbd7 6.c4 Bd6 7.Be2 0-0 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0).

5.e3 Nbd7 6.c4 Bd6 7.Be2 0-0 8.Nc3 b6 9.0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6 6.c4 Nbd7 7.Be2 0-0 8.0-0 b6 9.Nc3).

5.e3 Nbd7 6.c4 Be7 7.Nc3 0-0 8.Be2 b6 9.0-0 Bb7 10.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4 Nbd7 10.Nc3).

5.e3 Nbd7 6.c4 Be7 7.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 Nbd7).

5.e3 Be7 6.Be2 0-0 7.0-0 Nbd7 8.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 Nbd7 8.0-0).

5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3).

5.e3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0).

5.e3 0-0 6.c4 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3 0-0).

5.e3 0-0 6.Be2 Nbd7 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3 0-0 7.Be2).

5.e3 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd6).

5.e3 c5 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.c4 c5).

5.e3 Nbd7 6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3).

5.e3 Nbd7 6.d4 0-0 7.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3 0-0 7.d4).

5.e3 Nbd7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.Be2 Nbd7).

5.e3 Bd6 6.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.c4 Nbd7 6.Nf3).

5.e3 Bd6 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Bd6 5.Nf3 0-0 6.Be2 Nbd7).

5.e3 Be7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 Nbd7).

5.e3 Be7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 Nbd7).

5.c4 dc4 6.e3 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4 dc4).

5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3).

5.e3 0-0 6.a4 c5 7.Be2 b6 8.0-0 Bb7 9.c4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4).

5.e3 0-0 6.c4 dc4 7.Bc4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3).

5.e3 0-0 6.c4 c6 7.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4).

5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3).

5.e3 Nbd7 6.c4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4 Nbd7).

5.a4 Bd7 6.e3 c5 7.c4 Be7 8.Nf3 dc4 9.Bc4 Qb6 10.Nc3 0-0 11.0-0 Ne8 12.Rb1 (12.a5!? Qd8 13.b6+=) 12...Nd6= 13.Be2 Bf6 (13...ab5 14.Nb5 Bb5 15.ab5=) 14.Ne5 Qc7 15.Nc4 ab5 (better is 15...Nc4!? 16.Bc4 ab5 17.Nb5 Bb5 18.Bb5 Bb2 19.Rb2 Nd7=) 16.Nd6+/– Qd6 17.Ne4 (17.Bb5?! Bc6=; worse is 17.ab5 Be7+=; 17.Nb5?! Bb5 18.Bb5 Bb2 19.Rb2 Nd7=) 17...Qe7 18.Nf6 gf6 19.Bd3 f5 20.Qf3 f6 21.ab5 (21.Bb5?! Bc6 22.Qg3 Kh8+=) 21...Be8 22.e4 (22.Bc4 Ra4 23.d3 b6+-) 22...fe4 (22...c4!? 23.Bc2 Bb5 24.ef5 Bc6+/–) 23.Be4 Ra4 24.Bc3 1–0. Chirpii,Alexandru (2115) – Anghel,Dumitru, Centrocoop op, 2000. (=1.f4 d5 2.b4 Nf6 3.Bb2 e6 4.b5 a6)

5.e3 ab5 6.Bb5 c6 7.Be2 Be7 8.Nf3 0-0 9.0-0 c5 10.c4 Nc6 11.Qc1 d4 12.Ne5 Qd6 13.Nc6 bc6 14.Na3 e5 15.Nc2 Re8 16.fe5 Qe5 17.Ne1 (17.Bf3 Ng4 18.Bg4 Bg4 19.ed4 cd4 20.Bd4 Qh5=) 17...Bd6= 18.Nf3 Qh5 19.Bd3 Ng4 Can h2 get defended? 20.h3 Ne5 21.Ne5 Qe5 22.Rf3 Qh2 23.Kf2 de3 24.de3 Be7 25.Qg1 Bh4 26.Ke2 Qg1 (26...Qg1 27.Rg1 Ra2–/+) 0–1. Benassi,Aspasio – Gilimshin,Azamat Ulfatovich, EM/J50/P150, 2001.

5.e3 ab5 6.Bb5 Bd7 7.Bd7 Nbd7 8.Nf3 c5 9.0-0 Be7 10.d3 0-0 11.Nbd2 b5 12.c4 bc4 13.dc4 Nb6 14.Ne5 Qe8 15.Qc2 Na4 16.Ba3 Nd7 17.Nd7 Qd7 Black launches an attack 18.cd5 ed5 19.e4 d4 20.Nc4 d3 21.Qf2 Qe6 22.Nd2 Rfc8 23.Rfc1 c5 draws heavy fire 23...Bd8 24.Rc4 Nb6 25.Rc3 c4 Black threatens Na4 26.f5 Qe5 27.Rac1 Ra3! 28.Ra3 Be7 29.Nf3 Qf4 (29...Qe4?! 30.Ra5 Qf4 31.Rf1–/+) 30.Rac3 (30.Qb2 Ba3 31.Qa3–+) 30...Bc5 (30...Bc5 31.Nd4 Qe4 32.Rc4 Nc4 33.Rc4 Rb8–+) 0–1. Wetterling,Detlev – Garavito,Miguel Angel, Capablanca Memorial, 1998.

5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bd6 9.Nf3 0-0 10.Be5 A) 10...Qe7 11.Nc3 Be5 (11...Bd7 12.Bd3 cb5 13.Ng5 g6 14.Nb5=; 11...Nbd7 12.Bd6 Qd6 13.bc6 bc6 14.Be2=; 11...b6 12.Bd6 Qd6 13.bc6 Nc6 14.Qb1=; 11...Ne4 12.Bd6 Qd6 13.Ne4 de4 14.Ng5= ; 11...c5 12.Bd3 Nbd7 13.0-0 b6 14.Bd6=) 12.Ne5 Nfd7 13.Qh5 Ne5 14.fe5=; B) 10...b6 11.Nc3 Be5 (11...Ne4 12.Qa1 Be5 13.fe5 Ng5 14.Ng5=; 11...c5 12.Be2 Ne4 13.Bd6 Nd6 14.0-0=; 11...Bb7 12.Bd3 Be7 13.0-0 Nfd7 14.Bb8=; 11...Qe7 12.Be2 Bb7 13.Bd6 Qd6 14.bc6=) 12.Ne5 c5 13.Bd3 Nfd7 14.Nd7=; C) 10...Be5 11.fe5 Ne4 (11...Nfd7 12.d4 cb5 13.c3 f6 14.ef6=; 11...Ne8 12.Be2 cb5 13.Bb5 Bd7 14.Be2= 0.16/9) 12.Be2 f6 13.ef6 Qf6 14.0-0=; D) 10...Ne4 11.Bd6 Qd6 (11...Nd6 12.Nc3 Bd7 13.bc6 bc6 14.Bd3=) 12.Bd3 cb5 13.Bb5 Bd7 14.Bd3=.

5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bd6 9.Nf3 c5 10.Be2 A) 10...0-0 11.0-0 Qe7 (11...Nbd7 12.Be5 Be5 13.Ne5 Qa5 14.c4=; 11...b6 12.Be5 Bb7 13.d4 Be7 14.dc5=; 11...Be7 12.Qe1 Qb6 13.Be5 Nbd7 14.c4=; 11...c4 12.Bd4 Qe7 13.Nc3 Nbd7 14.d3=) 12.Be5 Nbd7 13.d4 c4 14.Nc3=; B) 10...Qe7 11.Bb2 b6 (11...0-0 12.0-0 c4 13.d3 cd3 14.Bd3=; 11...Nbd7 12.0-0 0-0 13.Ne5 Bc7 14.Qe1=; 11...c4 12.0-0 Bd7 13.Nc3 0-0 14.Qa1=; 11...Bd7 12.0-0 c4 13.Nc3 0-0 14.Qa1=; 11...h6 12.Ne5 Nbd7 13.0-0 0-0 14.d3=) 12.0-0 0-0 13.Ne5 Bb7 14.d3=; C) 10...c4 11.Bd4 0-0 (11...Bd7 12.Nc3 Qa5 13.Qb1 Qb4 14.0-0+=; 11...Qa5 12.Nc3 Bb4 13.Qb1 Bd7 14.0-0+=; 11...Nbd7 12.0-0 0-0 13.d3 cd3 14.cd3+=; 11...Qc7 12.0-0 0-0 13.Bf6 gf6 14.Qe1+=) 12.0-0 Qe7 13.Nc3 Nbd7 14.d3=; D) 10...Nbd7 11.0-0 Qa5 (11...0-0 12.Bb2 Qb6 13.Nc3 c4 14.Nd4=; 11...Qb6 12.Qe1 0-0 13.Qg3 c4 14.Nc3=; 11...Qc7 12.c4 0-0 13.Qc2 Rd8 14.Bd3=; 11...b6 12.Be5 Be5 13.Ne5 0-0 14.Nc6=; 11...Be7 12.Nc3 0-0 13.Qe1 Nb6 14.Ne5=) 12.Be5 Be5 13.fe5 Ng4 14.Qe1=.

5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bd6 9.Nf3 Bd7 10.Nc3 0-0 (10...Qc7 11.bc6 bc6 12.Ne2 c5 13.Bf6 gf6 14.Nc3=; 10...Qa5 11.bc6 Nc6 (11...Bc6 12.Nd4 0-0 13.Be2 Nbd7 14.0-0=; 11...bc6 12.Ne2 Be7 13.Bc3 Qd8 14.Ng3=) 12.Nb5 Be7 13.Be2 0-0 14.0-0=; 10...c5 11.Be2 Qa5 (11...c4 12.0-0 0-0 13.d3 Qb6 14.Nd4=; 11...0-0 12.0-0 c4 13.d3 Qb6 14.Nd4=; 11...Qb6 12.0-0 c4 13.Nd4 0-0 14.d3=; 11...Qc7 12.0-0 0-0 13.Qe1 d4 14.ed4=; 11...b6 12.0-0 0-0 13.Qe1 c4 14.Qg3=) 12.Qb1 c4 13.0-0 0-0 14.Qb2=) 11.Bd3 (11.Be2 Qb6 (11...c5 12.0-0 c4 13.d3 Qb6 14.Nd4=; 11...Qe7 12.0-0 cb5 13.Nb5 Bb5 14.Bb5=; 11...cb5 12.Nb5 Bc5 13.0-0 Nc6 14.Ng5=; 11...Bb4 12.0-0 cb5 13.Qb1 Qa5 14.Ne5= ; 11...Bc5 12.0-0 cb5 13.Nb5 Nc6 14.Ng5=) 12.Qb1 c5 13.0-0 c4 14.Ne5=) 11...h6 (11...Qa5 12.Qb1= c5 13.0-0 c4 14.Be2=; 11...Qe8 12.0-0 cb5 13.Nd4 b4 14.Ncb5=+; 11...c5 12.0-0 c4 13.Be2 Qb6 14.Nd4=; 11...Qc7 12.0-0 cb5 13.Nd4 b4 14.Ncb5=; 11...Qb6 12.Na4 Qa5 13.Bf6 gf6 14.Nc3=; 11...Qe7 12.0-0 cb5 13.Nb5 Bb5 14.Bb5=) 12.0-0+= cb5 (12...c5 13.Be2 c4 14.d3=) 13.Nb5 Bc5 (13...Bb5 14.Bb5=) 14.Qe2 (14.f5=) 14...Bb5 15.Bb5 Nc6 16.Bf6 Qf6 17.Bc6 bc6 18.d4 Bd6 19.Qa6 Qf5 (19...Qd8!?+=) 20.Qc6+- Bb8 21.g3 Qe4 22.Kf2 f6 (22...Rd8!?+-) 23.Rb1+- e5? (better 23...Rd8+-) 24.Nd2 Qf5 25.Qd5 Kh8 26.Rb2 ef4 (26...Qc8 27.Nf3 Rd8+-) 27.Qf5 1–0. Pierre – Kebab1, internet, 2019.

5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bd6 9.Nf3 Bd7 10.Be5 A) 10...Be7 11.Nc3 0-0 (11...cb5 12.Nb5 0-0 13.Be2 Nc6 14.Bc7=; 11...Bb4 12.Qb1 Bc3 13.Bc3 c5 14.Qb2+-; 11...Bc5 12.Be2 0-0 13.0-0 cb5 14.Nb5=) 12.Bd3 cb5 13.Nb5 Nc6 14.0-0=; B) 10...Bc5 11.Nc3 0-0 (11...cb5 12.Bb5 0-0 13.0-0 Ne4 14.Qe2=; 11...Bb4 12.Qb1 Bc3 13.Bc3 cb5 14.Bb5+=; 11...Be7 12.Bd3 0-0 13.0-0 cb5 14.Nb5=) 12.Qa1 cb5 13.Nb5 Be7 14.Bd3=; C) 10...Qe7 11.Bd3 cb5 (11...0-0 12.Nc3 cb5 13.Ng5 g6 14.Nb5=) 12.0-0 0-0 13.Ng5 g6 14.Qe2=; D) 10...Bb4 11.bc6 Nc6 (11...bc6 12.Be2 0-0 13.c3 Be7 14.Qc2=; 11...Bc6 12.Be2 Nbd7 13.Bd4 0-0 14.0-0=) 12.c3 Be7 13.Qb3 b6 14.Bb5=.

5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Bd6 9.Nf3 Nbd7 10.Be2 A) 10...Qc7 11.0-0 0-0 (11...c5 12.c4 0-0 13.Qc2 Rd8 14.Bd3=; 11...h6 12.Nc3 g5 13.g3 c5 14.Na4= ; 11...Be7 12.Nc3 0-0 13.Bb2 Nb6 14.bc6=; 11...Bc5 12.Be5 Ne5 13.Ne5 0-0 14.d4=; 11...Bb4 12.Bc3 Bd6 13.Qe1 0-0 14.Qg3=) 12.bc6 bc6 13.Qe1 Bb7 14.Qg3=+; B) 10...0-0 11.0-0 Qa5 (11...Qb6 12.Ne5 Qc7 13.Nd7 Nd7 14.Qe1=; 11...c5 12.Qe1 b6 13.Qg3 Qc7 14.c4=; 11...Qc7 12.Nc3 e5 13.fe5 Ne5 14.h3=; 11...cb5 12.Bb5 Qa5 13.Nc3 Bb4 14.Nd4=; 11...Re8 12.Be5 Qc7 13.d4 Ne4 14.Bd3=) 12.Bb2 cb5 13.Bd4 b4 14.Qc1=+; C) 10...Qa5 11.Bc3 Qc7 (11...Qb6 12.0-0 0-0 13.Bb2 Ne4 14.Ba3=; 11...Qd8 12.0-0 0-0 13.Be5 Be5 14.Ne5=) 12.0-0 0-0 13.bc6 bc6 14.Bb2=; D) 10...Qb6 11.0-0 cb5 (11...c5 12.Qe1 c4 13.Nd4 0-0 14.Nc3=; 11...0-0 12.bc6 bc6 13.Be5 Be5 14.Ne5=; 11...Be7 12.Bc3 0-0 13.bc6 bc6 14.f5=+) 12.Nd4 b4 13.Nb3 0-0 14.Rf3=+.

5.e3 0-0 6.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.f4 0-0 6.Nf3).

5.e3 0-0 6.Nf3 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.f4 Be7 6.Nf3 0-0).

5.c3 Bd7 6.e3 c6 7.a4 cb5 8.ab5 a6 9.ba6 ba6 10.Nf3 Bd6 11.Be2 0-0 12.0-0 a5 13.d4 Bc6 14.c4 dc4 15.Bc4 Bf3 16.Qf3 Qf3 17.gf3 Nc6 18.f4 Rfc8 19.Bb5 Nb4 20.Na3 Nd5 21.Nc4 Bb4 22.e4 Nf4 23.Nb6 Rcb8 24.Na8 Rb5 25.Nc7 Rb7 26.Na6 Bc3 27.Rad1 Ne2 28.Kg2 Nd4 29.Nc5 Ra7 30.f3 g6 31.Rd3 Nb5 32.Rd8 Kg7 33.Na4 Bf6 34.Rb8 Nd4 35.f4 Be7 36.Rfb1 Bb4 37.Nb6 Ne2 38.f5 ef5 39.ef5 Nd4 40.Nd5 Nf5 41.Nb4 ab4 42.R1b4 Nd6 43.h4 h5 44.Kg3 Nf5 45.Kf4 Nh4 46.R8b7 Ra5 47.R7b5 Ra7 48.Rb7 Ra5 49.R4b5 Ra4 50.Kg5 Nf3 0–1. Atotheking – Gogochari69 (1690), lichess.org, 2019.

5.d4 Bb4 6.c3 Ba5 7.e3 c5 8.Nf3 0-0 9.Be2 cd4 10.ed4 Nd7 11.0-0 b6 12.Bd3 Bb7 13.Qc2 h6 14.a3 Rad8 15.Re1 Qf4 16.Ra2 Nf6 17.Rb2 Rc8 18.Nfd2 Ng4 19.Nf3 Rc7 20.Rb3 Nf6 21.a4 Rfc8 22.Re2 Ne4 23.Be4 de4 24.Qd2 Qd2 25.Nfd2 Bc3 26.Nc3 Rc3 27.Rc3 Rc3 28.Kf1 Rd3 29.Nc4 Rd1 30.Re1 Rd4 31.Rc1 f5 32.a5 Bd5 33.Nb6? ab6 34.ab6 Rb4 35.Rc5 f4 36.Ke1 Rb1 37.Ke2 Rb2 38.Ke1 e3 39.fe3 fe3 40.h3 Bg2 41.Re5 Bd5 42.Re3 Rb5 43.Kd2 Rb6 44.Rd3 g5 45.Re3 Rb3 46.Rb3 Bb3 47.Ke2 e5 48.Ke3 Be6 49.Ke4 Bh3 50.Ke5 h5 51.Ke4 h4 52.Ke3 Bc8 53.Kf2 g4 54.Kf1 g3 55.Ke2 Bb7 (56.Ke3 h3–+) 0–1. Bestia02c – GLChess211, computer chess game, 2000.

5.a4 Bd7 6.e3 Bd6 7.f4 0-0 8.Nf3 h6 9.Be2 Ne4 10.Nc3 Qe8 11.0-0 Nc3 12.Bc3 ab5 (12...f6) 13.ab5 Ra1 14.Qa1 Bb5? (better is 14...f6) 15.Bb5 Qb5 16.Bg7 Rd8 17.Qf6 Bf8 18.Qd8 Kg7 19.Qb8 1–0. Wall,Bill – Guest1938787, playchess.com, 2012.

5.ba6 Na6 6.Bg2 Nc5 7.Nf3 Bd7 8.0-0 b6 (8...Be7 9.Nc3=+) 9.d4 (9.Ne5 Bd6=) 9...Nce4 (9...Na4 10.Bc1=) 10.Ne5= Bd6 (10...Be7=) 11.Be4?? (better is 11.f3+/–) 11...Ne4–/+ 12.f3 Ng5 (12...Nf6 13.Nd7 Qd7 14.Nd2–/+) 13.f4 (13.h4 Nh3 14.Kg2 Be5 15.de5 Nf4 16.gf4 Qh4 17.e4+=) 13...Ne4–/+ 14.f5 (14.Nd2 Nd2 15.Qd2 Bb5–/+) 14...Qg5 (14...ef5!? 15.Nd7 Qd7 16.Nc3–+) 15.fe6 (15.Bc1 Qe7 16.Nd7 Qd7 17.fe6 Qe6–/+) 15...Be6–+ 16.e3? (16.Bc1!? Qh5 17.Bf4–/+) 16...Qe3 17.Kh1? Nf2 18.Rf2 Qf2 19.Nd2 Bh3 20.Qg1 Qd2 21.Re1 0-0-0 22.Nf7 Rde8 23.Re8 Re8 24.Bc1 Qc2 25.Nd6 cd6 26.Bf4 Re1! 27.Qe1 Qg2 0–1. bby – zopo2, Caissa.com, 2004.

4.c4 Nb4?? 5.a3+- Nd3 (5...N4c6 6.bc6 dc6 7.e4+-) 6.ed3 Qh4 (6...a6 7.ba6 Na6 8.Nf3+-) 7.Nf3 Qf4 (7...Qd8 8.Be2+-) 8.g3 (better is 8.Be5!? Qf5 9.Bc7 Be7+-) 8...Qf6 1–0. GuestKZQQ – GuestLNDB. freechess.org, 2017.

4.c4 Nb6 5.e3 d5 6.cd5 ed5=.

4.c4 Ne7 5.e3 d5 6.Nf3 Nf5 (6...a6!?+=) 7.cd5+- ed5 8.Qc2 Be6 9.Bd3 Nd6 10.Bh7 (better 10.0-0+-) 10...g6?? (10...Nc4 11.Bf5 Bf5 12.Qf5+=) 11.Bg6 (better 11.Bh8 Nb5 12.Nc3 Nc3 13.Qc3+-) 11...Rg8+- 12.Bd3 a6 (12...Rg2 13.Bf1 Rg8 14.Qh7+-) 13.g3 (13.Nc3+-) 13...c6 (13...ab5!? 14.Nd4 Na6+-) 14.a4 (14.Bh7 Rg4 15.Ne5 ab5 16.Ng4 Bg4+-) 14...c5 (14...ab5 15.ab5 Ra1 16.Ba1 Nb5 17.Qa4+-) 15.Be2 (15.Nc3 ab5 16.Nb5 Nc6+-) 15...c4 (15...ab5 16.ab5 Bf5 17.Qd1 Ra1 18.Ba1+-) 16.Nc3 (16.Nd4 ab5 17.Ne6 fe6+-) 16...Nd7 (16...ab5 17.Nb5 Nc6 18.Nbd4+-) 17.Nd4 Bh3 (17...ab5 18.Ne6 fe6 19.Bh5 Nf7 20.Nd5 Rg5+- (20...ed5?? 21.Qh7 Qe7 22.Qg8+-)) 18.Nd5 Bg2 19.Bf3 (19.Ne6 Bd5 20.Nd8 Be4 21.Qe4 Ne4 22.Nb7 Bb4 23.Bc4 Nd2 24.Nd6 Kf8+-) 19...Bf3 (19...Bh1 20.Bh1 Ne5 21.Ke2+-) 20.Nf3 Nc5 (20...ab5 21.ab5 Ra1 22.Ba1 Qc8+-) 21.Nf6 Ke7 22.Ng8 Kd7 (22...Ke6 23.0-0 Bg7 24.Bg7 Qg8 25.Qb2+-) 23.Ne5 Ke6 (23...Ke8 24.0-0 Bg7 25.Qh7 Be5 26.Be5+-) 24.Qh7 (24.d4 Nd3 25.Nd3 cd3 26.d5 Kd7 27.Qd3 Bg7 28.Bg7 Qg8+-) 24...Qg5 (24...Bg7 25.Qg7 Qg8 26.Qh6 f6 27.Nc4 Nd3 28.Kf1+-) 25.f4 Qg7 26.Qh3 (better 26.f5 Nf5 27.Qh3+-) 26...f5 27.Nc4! Nd3 (27...Nc4 28.Bg7 Discovered attack) 28.Kf1 (28.Ke2!? Nb2 29.Nd6 Kd6 30.Qf5 Qg8 31.Qe5 Kd7 32.Qb2 Qd5+-) 28...Nb2 (28...Qg8 29.Nd6 Bd6 30.Bd4+-) 29.Nd6 Bd6 30.Qh6 (better 30.Nh6 Qh7 31.e4 ab5 32.ef5 Kd7 33.Rc1+-) 30...Qh6 31.Nh6 Rh8 (31...Bf8 32.Nf5! Kf5 33.Ke2+-) 32.Nf5! Kf5 33.g4! Ke4 (33...Kg4 34.Kf2 Combination) 34.Ke2 a5 (34...Nd3 35.h4+-) 35.d3! Nd3 36.Rad1 Nf4 37.ef4 Kf4 (37...Bf4 38.Rd7 b6 39.Re7 Kd4+-) 38.Rd6 1–0. GuestXMMY – guestbernardoo, freechess.org, 2019.

4.c4 Nf6!?=.

4.e3 f6 5.c4 Nb6 6.a4 (6.d4 Bb4 7.Bc3 Qe7+=) 6...d6 (6...d5!?=) 7.a5 N6d7 8.d4 Qe7 (8...f5 9.Nf3+=) 9.Bd3+- Qf7 10.Nf3 Be7 11.0-0 g5 (11...0-0 12.Nc3+-) 12.a6 (12.Nc3 a6+-) 12...b6 (better 12...ba6!? 13.Nc3 Bb7+=) 13.Be4 d5 14.cd5 (14.cd5 ed5 15.Bf5+-) 1–0. GuestTDMH – GuestWCTB, freechess.org, 2018.

4.e3 Qg5 5.Nf3+= Qg6 6.c4 (6.Bd3 f5+=) 6...Nf6 7.Ne5 (better is 7.d4+=) 7...Qg5? (better is 7...Qh6=) 8.h4+- Qf5 (8...Qh6 9.g4 Ne4 10.Bg2 Nf2 11.Kf2 Qf6 12.Ke1+-) 9.Bd3 Qh5 10.g4 Ng4 11.Ng4 f6 (11...Qc5+-) 12.Nf6! gf6 13.Qh5 Kd8 14.Bf6 Be7 15.Bh8 c6 16.Qh7 (16.Rg1 cb5 17.Rg8 Kc7 18.Be5 d6 19.Rc8 Kc8 20.Qe8 Kc7 21.Qe7 Nd7 22.Bd6 Kb6 23.Qd7 bc4 24.Qc7 Ka6 25.Qc4 b5 26.Qb5) 16...Bd6 17.c5! Bc5 (17...Bc5 18.Be5 Combination) 18.Be5 Be7 (18...Bf8 19.Qh8 d5 20.Qf8 Kd7 21.Qd6 Ke8 22.Bg6) 19.Qh8 Bf8 20.Qf8 1–0. DEFFM – GuestRJWB, freechess.org, 2018.

4.e4 a6?? 5.ed5+- ab5 6.Bb5 c6 7.dc6 bc6 8.Be2 Na6 (8...Qb6 9.Bc3+-) 9.Nf3 f6 10.0-0 h5 (10...Rb8 11.Bd4+-) 11.Nh4 (better 11.Nc3+-) 11...Rh6 (11...Qb6 12.Ba3 Qd4 13.Bf8 Rf8 14.Bh5 Kd8+-) 12.Bh5 Ke7 13.Ng6 (13.Ng6 Kf7 14.Ne5 Kg8 15.Nf7+-) 1–0. DEFFM – GuestPTDR, freechess.org, 2019.

4.e4 Nb6 5.a4+= d5 6.a5 Nc4 7.Bc4 dc4 8.Nf3 (8.Na3 Qg5+=) 8...a6 (8...c6 9.Na3 Qa5 10.Nc4 Qb5 11.Nfe5+=) 9.ba6+= Na6 (9...Ra6 10.Ne5+=) 10.0-0 Nc5 (10...b5 11.Ne5+=) 11.Qe2+/– b5 (11...Ra6 12.Qc4 f6 13.e5+/–) 12.ab6! Ra1 (12...cb6 13.Ra8 Discovered attack) 13.Ba1 (13.bc7 Qc7 14.Ba1 Bb7+/–) 13...Ba6 (13...cb6 14.Bd4+= (14.Qc4?! Ba6 15.Qb4 Nd7=)) 14.Ne5 (better is 14.bc7!? Qc7 15.Bd4+-) 14...cb6+= 15.Nc4 Be7? (better is 15...Qa8 16.Nc3 b5=) 16.Bg7+- Rg8 17.Be5 Bf6 (17...Qc8 18.d3 Bc4 19.dc4+-) 18.Bf6 Qf6 19.Nba3 Kf8 (19...Qg7 20.Qf3+-) 20.Rb1 Qg5 (20...Bc4 21.Nc4 (21.Qc4?! Qf3 22.g3 Qa3=) 21...b5 22.Rb5 Qa1 23.Qf1 Qf1 24.Kf1 Ne4 25.f3+-) 21.Qf3 Bc4 (21...Nd7 22.d4+-) 22.Nc4 Na4 (22...Qd8 23.Rb6 Qa8 24.h4+-) 23.e5 h5 (23...Qg4 24.Qa8 Ke7 25.Qb7 Kf8 26.Nd6+- (26.Nb6?! Nb6 27.h3 Qg5 28.Rb6 Qd2+-)) 24.Nd6 (better is 24.Qa8 Ke7 25.Qa7 Kf8 26.g3+-) 24...Rg7 (24...Kg7 25.Qf7 Kh8+-) 25.Qa8 Ke7 26.Qe8 1–0. DEFFM – solorunningsolo, freechess.org, 2018.

4.e4 Nf4 5.Qg4 Ng6 6.Nf3 d6 7.e5 de5 8.Ne5 Qf6 9.d4 Bb4=+ 10.Nc3 Ne5 11.de5 Qe5 12.Qe2?? Bc3–+ 13.Bc3 Qc3 (13...Qc3 14.Qd2 Qa1 15.Qd1 Qa2–+) 0–1. WolverLini – braken, ChessWorld.net, 2011.

4.Nf3 a6 5.a4 (5.e4 Nf4=) 5...ab5 6.ab5 Ra1 7.Ba1 c6 (7...Nf6 8.Bf6 Qf6 9.e4=) 8.c4 (8.e4 Nc7+=) 8...Qa5 9.Nc3 (9.Bb2 Nb4 10.e3 d5=) 9...Nf4 (9...Nb4!? 10.Bb2 d5=) 10.e3+= Ng6 11.Be2 cb5 (11...d5 12.0-0+=) 12.Nb5+- Nc6 13.0-0 d5 14.Bc3 Bb4 (14...Nb4!?+-) 15.Bg7+- Rg8 16.Bc3 dc4 17.Nd6! Kd7 (17...Bd6 18.Ba5 Pinning (18.Ba5 Deflection)) 18.Nc4 (18.Nc8?! b5+-) 18...Qc5 (18...Qa2 19.Bb4 Nb4 20.Nce5 Ke7 21.Qc1+-) 19.d4 Qd5?? (19...Qf8 20.Nfe5 Ke8 21.Bb4 Qb4+-) 20.Nb6 Ke8 21.Nd5 (21.Nc8?! Bc3 22.Qa4 Kf8+-) 21...ed5 22.Bb4 Nb4 23.Qa4 (23.Qb3 Nc6+-) 23...Nc6 24.Bb5 Bd7 (24...Nge7 25.Ne5 f6 26.Nc6 bc6 27.Bc6 Kf7+-) 25.Bc6 Bc6 26.Qa8 Ke7 27.Qg8 1–0. kovacic (2170) – thedarce, ChessWorld.net, 2013.

4.Nf3 Nb6 5.e3 d5 6.a4 N8d7 (6...a6!?+=) 7.a5+- Nc4 8.Bc4 dc4 9.0-0 Nc5 (9...a6 10.ba6 ba6 11.Na3 Ba3 12.Ba3+-) 10.Ne5 (10.Qe2+-) 10...Qg5 (10...Be7!?+-) 11.f4+- Qh6 (11...Qf5 12.Nc3+-) 12.Nc4 Be7 13.Rf3 (better 13.Nc3 Nd7 14.Qf3+-) 13...Bd7?? (better 13...e5 14.d4 ed4 15.ed4 Bg4 16.dc5 Bc5 17.Kh1 0-0+-) 14.Rh3 Qg6 15.Rg3 (better 15.Ne5 Qf6 16.Bd4 Bb5 17.Nc3+-) 15...Qh6?? (15...Qf5 16.Rg7 h5+-) 16.Bg7 Qh4 (16...Qg7 17.Rg7 Bf6 18.Rg5 Bg5 19.fg5 Bb5 20.Nba3+-) 17.Bh8 0-0-0 (17...Bb5 18.Nba3 Bc4 19.Nc4+-) 18.b6 a6 (18...cb6 19.ab6 a6 20.Rh3 Qh3 21.gh3 Rh8 22.Qh5+-) 19.Rg4 Qh6 20.Bg7 Qh5 21.bc7 Kc7 22.Be5 Bd6 23.Nd6 Kc6 24.Qf3 (24.Qf3 Kc7 25.Nf5 Kc8 26.Ne7) 1–0. GuestYQJX – GuestWNGY, freechess.org, 2020.

4.Nf3 c6 5.a4 c5 6.c4 Nb6 7.d3 a6? 8.a5 +-. Fritz 8 – NN, 2003.

5.e3+- Nd3?? 6.Bd3+- a6 7.a4 (7.Nc3 ab5 8.cb5 d5+-) 7...ab5 8.ab5 Ra1 9.Ba1 b6 (9...d5 10.Nc3+-) 10.Be4 (10.Nf3 d6+-) 10...Qg5 (10...d6 11.Ne2+-) 11.Nh3 Qc5 12.Qc2 (12.Qb3 c6 13.Bd4 Qe7+-) 12...f5 (12...d5 13.cd5 Qc2 14.Bc2 ed5 15.Nf4+-) 13.Bf3 Rg8 (13...d5 14.Bh5 Ke7 15.d3 dc4 16.dc4+-) 14.Ng5 (14.0-0 Be7+-) 14...h6 (14...Be7 15.Nh7 d5 16.d3 dc4 17.dc4+- (worse 17.Qc4 Qc4 18.dc4 Kf7+-)) 15.Nh3 g6 (15...d5 16.Be2+-) 16.Nf4 Bd6 (16...d5 17.Be2 dc4 18.Bc4+-) 17.Bd4 (better 17.Nd3 Na6 18.Nc5 Nc5+-) 17...Qb4 18.Bc3 (better 18.Nd5 ed5 19.Bd5 Bb7+-) 18...Qc5 (18...Qc4 19.Qb2 Bf4 20.ef4 d6+-) 19.Bd4 (better 19.d4 Qc4 20.Be2 Qe2 21.Qe2 Ke7+-) 19...Qb4 20.Nd3 (better 20.Nd5!? ed5 21.Bd5 Bb7+-) 20...Qa5 21.Ne5 (21.0-0 c5 22.Bb2 Qa7+-) 21...c5 (21...Nc6 22.Nc6 dc6 23.Bc3+-) 22.Bc3 Qa7 23.Ng6! Rg6 (23...Kf7 24.Bh5 Qa8 25.Qd3+-) 24.Bh5 Kf7 25.0-0 (better 25.Qd3 Bc7 26.e4 Qb7 27.ef5 Kg8 28.fg6 d5+-) 25...Bb7 (25...Bc7 26.e4 Bh2 27.Kh2 d6+-) 26.g4 (better 26.f3!? Na6 27.ba6 Ba6+-) 26...Be4 (26...Bf3 27.h3 Qc7+-) 27.d3 Bf3 28.Bg6 Kg6 29.gf5 Kf7 (29...ef5 30.Nd2 Be2 31.Re1+-) 30.Nd2 Be2 (30...Bh5 31.f6+-) 31.Ra1 (31.Ne4 Bh2 32.Kh2 Bf1 33.Qd1 Qc7 34.Kg1 Qh2 35.Kh2 ef5 36.Qh5 Kf8 37.Nf6 Kg7 38.Nd7 Kh7 39.Qf7) 31...Qb7 (31...Qc7 32.f6 Bh2 33.Kg2 Bd6+-) 32.fe6 (32.Ne4 Bh2 33.Kh2 Qc7 34.f4 Bf3+-) 32...de6 (32...Ke7 33.d4 cd4 34.Qh7 Kd8 35.ed4+-) 33.Ne4 Be7 34.Qe2 Qc7 35.Qh5 Kf8 36.Qh6 Ke8 37.Ra8 Kd7 38.Qh8 Bd8 1–0. GuestDXTL – GuestTTTK, freechess.org, 2019.

5.e3 Ng6 6.Nf3 Ne7 7.Bd3 (7.Nc3 d6+-) 7...Ng6 8.0-0 f6? (8...d6 9.Qc2+-) 9.Nh4! Nh4 10.Qh5 Ke7? (better 10...g6 11.Qh4 Bg7+-) 11.Qh4+- h5 12.Bg6 (12.Nc3 Kf7+-) 12...d6 (12...Rh6 13.Bh5 Qe8 14.g4+-) 13.g4 (13.d4 Rh6 14.Qe4 Qd7+-) 13...Bd7? (better 13...Nd7+-) 14.g5 Be8 15.gf6 Kd7 16.f7 (16.fg7?! Qh4 17.Be8 Ke8 18.gh8Q Qg4 19.Kh1 Qf3 20.Kg1 Qg4 21.Kh1 Qf3 22.Kg1 Qg4=) 16...Qh4 (16...Bf7 17.Qd8 Kd8 18.Bf7 Rh6+-) 17.fe8Q 1–0. GuestXJBP – GuestYOOU, freechess.org, 2020.

5.c4 Nb6 6.Nf3 a6 7.a4 d5 8.cd5 Nd5 9.Be2 (9.Nc3 Nf6=) 9...a5 (9...ab5!? 10.ab5 Ra1 11.Ba1 Bd6=) 10.0-0+= Nf6 11.Qc2 Bd6 12.e4 Bb4 13.Bd3 0-0 (better is 13...Nbd7!?+=) 14.e5+- g6? (better is 14...Nfd7 15.Bh7 Kh8+-) 15.ef6 1–0. GuestTLPB – GuestGPCD, freechess.org, 2017.

5.Nf3 Nd7 6.d4 N7b6 (6...c5 7.bc6 bc6 8.c4 Qa5 9.Qd2 Qd2 10.Nbd2+=) 7.c4+- Nf6 8.a4 a6 (8...a5 9.Nbd2+-) 9.a5 Nbd7 10.Bd3 (10.Nbd2 g6+-) 10...ab5+= 11.cb5 b6? (better 11...c5 12.bc6 bc6+=) 12.a6+- Nd5 (12...g6 13.Nc3+-) 13.0-0 Be7 14.Qb3 0-0 15.Nc3 (15.g3 Ra7+-) 15...N7f6 (15...Nc3 16.Bc3 Ra7 17.e4+-) 16.Ne2 c5 (16...h6 17.h3+-) 17.bc6 Qc7 18.e4 (better 18.Rfc1+-) 18...Qc6 (18...Nb4 19.Qb4 d5+-) 19.ed5 Nd5 20.Rfc1 Qd7 (20...Qe8 21.a7+-) 21.Nc3 Nc3 (21...Nf4 22.Bf1+-) 22.Rc3 Bf6 (22...Qd8 23.a7+-) 23.Qc2 h6 (23...g6 24.a7! Qe8 25.Rc7+-) 24.Rc7 Qd8 (24...Qe8 25.a7 Bd7 26.Ba3+-) 25.Bh7 (better 25.Qc6 Ba6 26.Ba6 d5+-) 25...Kh8 26.Bd3 d5?? (26...Kg8 27.Qc6 e5+-) 27.Qc6+- Ba6 28.Ba6 Rb8 (28...Kg8 29.Ne5 Be5 30.de5+-) 29.Ba3 Rg8 (29...Qe8 30.Bf8 Qc6 31.Rc6 Rf8 32.Bd3+-) 30.Rf7 g5 (30...Qe8 31.Qc7 Ra8+-) 31.Qe6 Bg7 32.Bd3 b5 (32...Re8 33.Qg6 Re1 34.Re1 Qg8 35.Ree7 Rc8 36.Rg7 Rc1 37.Bc1 Qg7 38.Qg7) 33.Qh6! Bh6 (33...Bh6 34.Rh7 Mate attack) 34.Rh7 1–0. DEFFM – GuestVCWV, freechess.org, 2020.

5.Nc3 a6+=.

5.e5 Ne4 6.Nf3=.

4.a4 a6 5.c4 ab5 6.ab5 c6?? 7.Ra8+- cb5 (7...Nbd7 8.Bf6 Nf6 9.Nf3+-) 8.Rb8 d5 (8...Nd7 9.Rc8 Qc8 10.cb5+-) 9.Ra8 (9.Bf6 gf6 10.cd5 Bd6+-) 9...Qc7 (9...dc4 10.Bf6 gf6 11.Nc3+-) 10.cb5 (10.Bf6 gf6 11.cd5 b4+-) 10...Bb4 (10...Be7 11.Nf3 0-0 12.e3+-) 11.e3 (better 11.Qa4 Qc5 12.Rc8 Qc8 13.b6 Nd7 14.Qb4 f6+-) 11...e5 (11...Be7 12.Nf3 0-0 13.Be5+-) 12.Nf3 (12.Be5!? Qd8+-) 12...d4 (12...Bd6 13.b6! Qd8 14.Be5 Be5 15.Ne5+-) 13.ed4 (13.Qa4 Qc5 14.ed4 ed4 15.Rc8 Qc8 16.Qb4 Qf5+-) 13...0-0 (13...ed4 14.b6! Qe7 15.Qe2+-) 14.de5 Ne4 (14...Nd5 15.Qc1 Bc5 16.d4 Bb4 17.Nbd2+-) 15.Be2 (15.Ra4 Qe7 16.Qb3 Bc5 17.Re4 Bf5+-) 15...Bg4 (15...Bf5 16.Rf8 Bf8 17.0-0+-) 16.Rf8 (16.Ra4 Rd8 17.Rb4 Bf3 18.Bf3 Nf2 19.Kf2 Qc5 20.Rd4 Rd4 21.Bd4 Qd4 22.Ke1 Qc5+-) 16...Kf8 (16...Bf8 17.0-0+-) 17.0-0 (17.Qa4 Qe7+-) 17...h5 18.d3 Nc5 19.Nbd2 (19.d4 Ne6 20.Qb3 Be7+-) 19...Ne6 20.Ne4 (20.h3 Bf5+-) 20...Be7 (20...Nf4 21.d4+-) 21.d4 Qb6 22.d5 Nf4 23.Bd4 (23.d6 Ne2 24.Qe2 Bd8+-) 23...Ne2 (23...Qg6 24.Ng3 h4 25.Qc1 Nd5 26.Qc4+-) 24.Qe2 Qg6 25.Ng3 (better 25.Ra1 Kg8 26.Ra8 Kh7+-) 25...h4 26.Qe4 (better 26.Qa2 Kg8 27.Qa8 Kh7+-) 26...hg3 27.Qg6 gh2 (27...fg6 28.fg3 Bf5 29.Ra1+-) 28.Nh2 fg6 29.Ng4 Bc5 30.Bc5 Ke8 (30...Kf7 31.e6 Kg8 32.e7 Kh8 33.e8Q Kh7 34.Nf6 gf6 35.Qd7 Kh6 36.Bf8 Kh5 37.Qh3 Kg5 38.Bh6) 31.e6 (31.Ra1 b6 32.Ra8 Kd7 33.e6 Kc7 34.e7 bc5 35.e8Q c4 36.Qc6) 31...g5 (31...b6 32.Ra1 Kd8 33.Ra8 Kc7 34.e7 bc5 35.e8Q c4 36.Qc6) 32.d6 (32.Ra1 Kd8 33.Ra8 Kc7 34.d6) 32...b6 (32...Kf8 33.e7 Kf7 34.Re1 Kg6 35.e8Q Kh7 36.Qh5 Kg8 37.Re8) 33.d7 (33.Ra1 bc5 34.Ra8) 33...Kd8 34.Bd6 g6 35.Nh6 g4 36.Nf7 1–0. BeepBeepImAJeep (2500) – asdochess (2255), lichess.org, 2018.

4.Nc3 b6 5.Nf3 Bb7 6.e3 Nbd7 7.Be2 Be7 8.a4 Nc5 9.a5 Nce4 (9...0-0 10.0-0+=) 10.Ne4+- Ne4 11.a6 Bc8 12.c4 Qd7 (12...Bd7 13.Qc2 f5 14.d3+-) 13.Nd4 (13.0-0 0-0+-) 13...0-0 (13...Bf6 14.Qc2 Nc5 15.0-0+-) 14.Qc2+- f5 15.d3 Ng5? (better 15...Nc5+-) 16.h4+- Nf7 17.Bf3 d5 18.Ne6! Qe6 19.Bd5 Qg6 (19...Qd6 20.Ba8 Be6 21.Ba3+-) 20.Ba8 Bf6 (20...f4 21.Be4 Bf5 22.ef4 Be4 23.de4 Qg2 24.0-0-0+-) 21.h5 Qg5 22.Bd5 f4 (22...Re8 23.Bf6 Qf6 24.0-0+-) 23.Bf6 Qf6 24.0-0 Kh8 25.ef4 Qf4 (25...Bg4 26.f3 Bd7 27.Rae1+-) 26.Rae1 Nh6 (26...Qf6 27.Qe2 Nd6 28.Qe7+-) 27.Re4 Qg5 (27...Qd6 28.Qe2 Bd7 29.Re1+-) 28.Qe2 Bg4 (28...Qd8+-) 29.Re8 Ng8 30.Rf8 h6 (30...Qd5 31.Qg4 Qf3 32.gf3 c5 33.Qe6 g6 34.Rg8) 31.Rg8 Kh7 32.Qe8 Qh5 (32...Qd5 33.Rh8) 33.Rh8 1–0. pcmvr – vaingrecsky, net–chess.com (1), 2019.

4.Nc3 Nbd7 5.Nf3=.

4.c4 Nbd7 5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 (8...Be7 9.d4=) 9.Nc3 cb5 (9...Be7 10.Nf3=) 10.Nb5 Nb6 (10...Be7 11.Nf3=) 11.Nf3 (11.Bf6 Qf6 12.d4 Bd7+=) 11...Be7 (11...d5 12.Qc2=) 12.Be2 (12.Bf6 Bf6 13.d4 0-0+=) 12...0-0 (12...e5 13.d4 e4 14.Nd2+=) 13.0-0 Bd7 (13...e5 14.d4 e4 15.Nd2+=) 14.Qc2 (14.Qb3 Bc6+=) 14...Bb5 15.cb5 d5 (15...Qd7 16.Qb1=) 16.Bb2 (16.Bd3 h6=) 16...Qd7= 17.Qb3 (17.Ne5 Qd6=) 17...Bd6 (17...Rc8 18.Bd4 Qd6 19.Be5=) 18.h3 (18.Bd4 Qd8+=) 18...Ne4 (18...Qe7 19.Rc1=) 19.Ra1 (19.Rc1 Rc8=) 19...Nc5 20.Qc3 (20.Qc2 Rc8=) 20...f6 21.Qc2 (21.Ba3 Ne4 22.Qb2 Nc4 23.Bc4 A) worse is 23...dc4 24.Qd4 f5 25.Bd6 (worse is 25.Qc4 Ba3 26.Ra3 Rc8=) 25...Nd6 26.Ne5+/–; B) 23...Ba3 24.Ra3 dc4=) 21...Rc8 22.Bc3 (22.Qb1 e5=) 22...Ne4+= 23.Ra7 (23.Qb3 Nc3 24.dc3 Rc7+=) 23...Bb4–/+ 24.Nd4 Bc3 25.dc3 Rc3 26.Qb2 (26.Qd1 Qc8 27.Nb3 f5–/+) 26...Qc8 27.f3 (27.Bg4 Rc1 28.Kh2 f5 29.Ne6 Qe6 30.Qc1 Qe5 31.f4 Qb8 32.Bf5 Qa7 33.Be6 Kh8+-) 27...Rc1 (27...Ng3!? 28.Bd1 Re3 29.Qf2–+) 28.Kh2–/+ Ng5 (better is 28...Qb8 29.f4 Rc3–/+) 29.Rb7= Qb7 (29...Na4 30.Qa3 Rc5 31.Re7=) 30.Qc1+= e5 31.Nc6 (better is 31.Qc6 Qc6 32.Nc6+=) 31...Nc4?? (better is 31...Qc7=) 32.Bc4+- dc4 33.Qc4 Kf8 34.Qd5 (better is 34.Kg3+-) 34...Qb8?? (34...Nf7 35.Qe6+-) 35.g3 (better is 35.Nb8 g6 36.b6 Kg7+-) 35...Nf7?? (35...Qb7 36.Qd8 Kf7 37.f4+-) 36.Kg2 (36.Nb8 g5 37.Nd7 Ke7+-) 36...Nd6?? (better is 36...Qd6 37.e4 Qa3+-) 37.Qc5 (37.Nb8 Nc8 38.Qe6 g6 39.Nd7 Kg7 40.Qf6 Kh6 41.Ne5 Na7 42.Nf7 Kh5 43.g4) 37...h5 (37...Qc7 38.b6 Qd7 39.b7 Qb7 40.Qd6 Kg8 41.f4 Qb2 42.Kf3 e4 43.Kg4 Qe2 44.Kf5 Qh5 45.Ke4 Qh3 46.Kd4+-) 38.g4 (better is 38.Nb8 Kg8 39.Qd6 Kh7+-) 38...Ke8 (38...Qb5 39.Qd6 Kg8 40.Qe6 Kh7 41.Qf5 g6+-) 39.b6 (39.Nb8!? Nb5 40.Qb5 Kf8+-) 39...hg4 (39...Qa8 40.Qd6 Qb7 41.Qd8 Kf7 42.Qc7 Qc7 43.bc7+-) 40.hg4 (40.Nb8 gf3 41.Kf3 e4 42.Ke2 Nb7 43.Qc8 Kf7 44.Qb7 Kg6+-) 40...e4 (40...Qb7 41.Qd6 Qd7 42.Qd7 Kd7+-) 41.Nb8 (41.Nb8 g6 42.Qd6 Kf7 43.Nd7 ef3 44.Kf3 g5 45.b7 Kg7 46.Qe7 Kh6 47.Nf8 f5 48.Qf6) 1–0. DEFFM – liyibo, freechess.org, 2016.

4.e3 b6 5.Nf3 Bb7 6.d4 Be7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.d4 d6).

4.e3 c5 5.Nf3 Be7 6.Nc3 0-0 7.Bd3 a6 8.a4 ab5 9.ab5 Ra1 10.Qa1 Qc7 11.Qa7 d5 12.b6+/– Qd6? 13.Nb5+- Qd7 14.Ne5 Qe8? 15.Nc7 Qd8 16.Qb8 Bd6 17.Bb5 Be5 18.Be5 Qe7 19.0-0 Nd7 20.Bd7 Bd7 21.Qb7 f6 22.Bg3 h6 23.Rb1 Bc8 24.Qc6 Bd7 25.Qd6 Qd6 26.Bd6 Rd8 27.b7 Rb8 28.Nd5! (28.Nd5 ed5 29.Bb8+-) 1–0. pcmvr (2775) – bvanderweerd (2125), net–chess.com, 2008.

4.e3 Be7 (--> 3.b5 Be7 4.e3 d6).

4.e3 g5 5.d4 (5.Nc3 Nbd7+=) 5...h5 (5...a6 6.Nc3=) 6.Nh3 (6.Nc3 a6+=) 6...g4 (6...Rg8 7.Nc3+=) 7.Nf4 Bg7 (7...Nbd7 8.Nc3+=) 8.Bd3 (8.Nc3 Nbd7+=) 8...Qe7 (8...Nbd7 9.Nc3+=) 9.0-0 (9.Nc3 Nbd7+-) 9...Nbd7 (9...a6 10.Nc3 ab5 11.Bb5 Bd7 12.Be2=) 10.c4 (10.Nc3 h4+=) 10...b6 (10...e5 11.de5 Ne5 12.Nc3=) 11.Nc3+- Bb7 12.a4 e5 (12...h4 13.a5 ba5 14.h3=) 13.de5 (13.Nfd5 Nd5 14.Nd5 Bd5 15.cd5 e4+-) 13...Ne5 14.Qc2 (14.a5 ba5 15.Ra5 0-0+-) 14...0-0-0 (14...h4 15.Ncd5 Nd5 16.Nd5 Bd5 17.cd5+=) 15.Bf5 Kb8 16.e4 (16.a5 h4 17.ab6 cb6+-) 16...Bh6 (better 16...h4 17.Ncd5 Nd5 18.Nd5 Bd5 19.cd5 h3=) 17.Ncd5+- Nd5 18.Nd5 Bd5 19.cd5 (19.ed5 Bf4 20.Be4 f5 21.Be5 Be5 (21...Qe5?! 22.Bf5 Bh2 23.Kh1=+) 22.Bf5 Ba1 23.Ra1 Qe5–+) 19...Qg5 (19...h4 20.h3 gh3 21.Bh3+-) 20.Bc1 (20.Be5 de5 21.Qc6 Qe7+-) 20...Qg7 21.Bb2 Qg5 22.Be5 de5 23.Ra2 (23.Qc6 Qe7 24.a5 Qd6+-) 23...Qe7 (23...h4 24.a5 ba5 25.Ra5 Qd2+-) 24.a5 Qc5 25.ab6 Qc2 26.ba7 (26.Rc2?! ab6 27.Ra1 Kb7+-) 26...Ka8?? (26...Kb7 27.Rc2 Rd6+-) 27.Rc2+- Kb7 28.Ra1 (better 28.Rb1 Rd6 29.Rc6 Rc6 30.bc6 (30.dc6?! Kb6+=) 30...Ka7 31.Rb7 Ka6 32.Rc7+-) 28...Ra8 (28...Bg5+-) 29.b6! cb6 (29...Kb6 30.Rb1 Mate attack; 29...cb6 30.Bd7 Combination) 30.Bd7 Ra7 31.Bc6 Kb8 (31...Kc8 32.Ra7 Rd8 33.Ra8 Kc7 34.Bb5 Kb7 35.Rd8 Be3 36.fe3 g3 37.hg3 f6 38.d6 f5 39.Rc7) 32.Ra7 Ka7 (32...Bd2 33.Rd2 Rh6 34.Rb7 Kc8 35.Ra2 Rc6 36.dc6 b5 37.Ra8) 33.Ra2 (33.Ra2 Kb8 34.d6 b5 35.Ra8) 1–0. DEFFM – ulukko, freechess.org, 2020.

4.Nf3 a6 5.a4 ab5 6.ab5 Na6?? (better 6...Ra1 7.Ba1 Nbd7=) 7.e3 b6 (7...Rb8 8.ba6 ba6 9.Qc1+-) 8.ba6 Ra6 (8...c6 9.Nd4 Bd7+-) 9.Ba6 Ba6 10.Ra6 Qc8 (10...Be7 11.Nc3+-) 11.Qe2 g5 (11...Be7+-) 12.Bf6 Rg8 13.Qc4 Qa6 14.Qc6 1–0. GuestWWMN – GuestKGNH, freechess.org, 2019.

4.Nf3 Nbd7 5.e3 Be7 6.c4 0-0 7.Qc2 a6 (7...e5 8.Nc3 g6 9.d4 a6 10.Bd3 ed4 11.ed4 d5 12.ba6 Ra6 13.cd5; 7...g6 8.Nc3 a6 9.Be2 ab5 10.cb5 e5 11.d4 ed4 12.Nd4 d5 13.0-0) 8.Nc3 (8.Be2 ab5 (8...d5 9.Nc3 ab5 10.cb5 c5 11.bc6 bc6 12.Rb1 Ba6 13.0-0) 9.cb5 e5= (9...c5 10.0-0 Qc7 11.Nc3 d5 12.h3 b6 13.Rac1) 10.Nc3 g6 11.d4 ed4 12.Nd4 d5 13.0-0) 8...c6 (8...ab5 9.cb5 e5 (9...d5 10.Be2 c5 11.0-0 Qc7 12.g3 b6 13.Na4) 10.d4= (10.Be2 g6 11.d4 ed4 12.Nd4 d5 13.0-0) 10...c5 11.bc6 bc6 12.Bd3 Ba6 13.0-0) 9.a4 (9.bc6 bc6 10.Be2 Rb8 11.Rb1 h6 12.0-0 Bb7 13.h3) 9...d5 (9...ab5 10.cb5 Qc7 11.Be2 Ne5 12.bc6 Qc6 13.0-0) 10.bc6 bc6 11.Nd4 (better is 11.d4= a5 12.Bd3 Ba6 13.cd5; 11.Be2 Rb8 12.0-0 Qc7 13.cd5) 11...Ne5 (better is 11...Bb7+= 12.cd5 cd5 13.f4) 12.f4+/– Nc4 13.Nc6 (13.Bc4+/– 1.04) 13...Qc7 14.Ne7 Qe7 15.Bc4 dc4 16.Ba3 Qd8? (better is 16...Qb7!? 17.Bf8 Qg2+=) 17.Bf8+- Qf8 (17...Kf8 18.Rb1+-) 18.Ne4 Qe7 (18...Qd8 19.Nf6 Qf6 20.0-0+-) 19.0-0 (19.Qc4?! Ne4 20.Qe4 Bb7+/–) 19...Bb7 20.Nf6 Qf6 21.Qc4 Qg6 22.Qe2 a5 23.Rac1 h6 24.d3 Ba6 25.e4 (25.Rfd1!? Rd8 26.Rc3 Kh7+-) 25...Rd8 26.Rfd1 Qf6 27.Qe3 Rd4 28.Rc6 Bb7 29.Rc4 Rc4 30.dc4 Qg6 (30...e5 31.Qd2 Qb6 32.Kh1 Qc5+-) 31.f5! ef5 32.Qg3 Qg3 33.hg3 fe4 34.Kf2 (better is 34.Rd6!? Kh7 35.c5+-) 34...Bc6+/– 35.c5 (35.Rd8 Kh7+/–) 35...Ba4 (35...Kf8 36.Rd6 Ba4 37.c6+=) 36.Ra1 Bc6 37.Ra5 Kf8 38.Ra6 Bd5 39.Rd6 e3 (39...Be6 40.Ke3+-) 40.Ke3 Bg2 (40...Be6 41.c6 Ke7 42.Rd4+-) 41.c6 Bh3 42.c7 Ke7 43.Rd8 h5 44.c8Q Bc8 45.Rc8 Kf6 (45...g6 46.Kf4 f6 47.Rc7 Ke6 48.Rg7+-) 46.Rc5 (46.Kf4 g5 47.Ke4 Kg6+-) 46...g6 (46...Kg6 47.Kf4+-) 47.Kf4 Kg7 48.Rc7 Kf6 49.Rc6 Ke7 50.Kg5 Kd7 51.Ra6 (51.Rg6 fg6 52.Kg6 Ke6+-) 51...Ke7 52.Kh6 Kf8 53.Ra8 (53.Ra2 Ke7+-) 53...Ke7 54.Kg7 Ke6 55.Ra6 Kf5 56.Kf7 g5 57.Ra4 g4 58.Ra5 Ke4 59.Kg6 Kf3 60.Ra3 Kg2 61.Kh5 Kh3 62.Kg5 (62.Re3 Kh2 63.Kg4 Kg2 64.Re2 Kg1 65.Kf3 Kf1 66.g4 Kg1 67.Re1 Kh2 68.g5 Kh3 69.Rh1) 62...Kg2 63.Kg4 (63.Kg4 Kf1 64.Kf3 Kg1 65.Ra1 Kh2 66.g4 Kh3 67.Rh1) 1–0. Paggalis,G – Goutioudi,Irini, 3rd Open Patras GRE (4), 2001.

5.c4 Be7 6.e3 0-0 7.Nf3 e5 8.Be2 e4 (8...a6 9.0-0=) 9.Nd4 Nc5 (9...Re8 10.0-0=) 10.0-0 Re8 11.Nc3 Bf8 (11...a6 12.Qc2+=) 12.f4 (12.f3 ef3 13.Bf3 Nd3+=) 12...ef3 (12...a6 13.Qc2=) 13.Bf3+= g6 (13...Nd3 14.Qc2 Ne5 15.Be2+=) 14.Ba3 (14.Nd5!? Bg7 15.Nf6 Bf6 16.Bd5+-) 14...Bg7+= 15.Qc2 Bd7 16.a5 Rb8 (16...a6 17.ba6 Ra6 18.Bc5 dc5 19.Nb3= (worse 19.Bb7 cd4 20.Ba6 dc3–/+)) 17.Rae1 (17.a6 Ne6 18.Ne6 Be6 19.ab7 Bc4+-) 17...h5 (17...Bg4 18.d3+=) 18.Bc5 (18.Bb2 Bg4+-) 18...dc5+= 19.Nb3 b6 (19...Bf5 20.e4 Be6 21.Be2+=) 20.a6 Bf5 21.e4 Bg4 22.Nd5 (22.Re3 Be6 23.Nd5 Bd5 24.cd5 Qd7+=) 22...Bf3 (22...Nd5 23.cd5 Bd7 24.Qd3=) 23.Rf3 Ng4 (23...Nd5 24.cd5 Qh4 25.Re2+=) 24.Ref1+- Ne5 (24...Qd6 25.g3 Ne5 26.R3f2+=) 25.R3f2 (25.Rf4!?+-) 25...Qd6 26.h3 (26.Rf4 c6 27.bc6 Qc6+=) 26...c6+= Black gets the initiative 27.Ne3 (27.Nf6 Bf6 28.Rf6 Re6 29.Re6 fe6 30.bc6 Qc6=) 27...cb5 28.cb5 Rbd8 29.Nd5 (29.Nc1!?=) 29...c4 30.Nd4 (30.Nc1 f5 31.Nf4 fe4 32.Qe4 Qc5–/+) 30...Nd3 31.Rf7?? (better 31.Nc6 Re4 32.Nc3 Bc3 33.dc3–/+) 31...Bd4–+ 32.Kh1 Re4 (32...Rc8 33.Ra7 Re4 34.Ne3–+) 33.Nf6? (better 33.Qc4 Nf2 34.R7f2 Qd5 35.Rf8 Kg7 36.R8f7 Kh6 37.Qc7–/+) 33...Bf6 34.R7f6 Qg3 35.R6f3 (35.Qc3 h4–+) 35...Qg5 36.Qc3 Ne5 37.Rg3 (37.R3f2–+) 37...Qd2 38.Rg6 (38.Qa1–+) 38...Ng6 39.Qf6 Qd6 40.Qg5 (40.Qf7 Kh8 41.Qf5 Re5–+) 40...Kg7 (better 40...Re5 41.Qh6 Rde8–+) 41.Qf5 (41.Qh5 Qd3 42.Qf3 Rf4 43.Qd3 cd3–+) 41...Re5 (41...Rf8 42.Qf8 Qf8 43.Rf8 Kf8 44.Kh2 c3 45.g4 c2 46.gh5 c1Q 47.hg6 Qf4 48.Kh1 Qf3 49.Kh2 Re2 50.Kg1 Qg2) 42.Qf7 Kh6 43.Rf6 (43.Qc4 Qd5 44.Qc1 Rg5–+) 43...Qd1 (43...Re1 44.Rf1 Qg3 45.Qf3 Rf1 46.Qf1 Nf4 47.Qf4 Qf4 48.g4 Qf3 49.Kh2 Rd2 50.Kg1 Qd1) 44.Rf1 (44.Kh2 Rg5 45.Qc4 Qe1 46.Rg6 Kg6 47.Qe6 Qe6 48.h4 Qe5 49.Kg1 Rd1 50.Kf2 Rf5) 44...Qd2 (44...Re1 45.Kg1 c3 46.Re1 Qe1 47.Qf1 Qf1 48.Kf1 c2 49.Ke2 c1Q 50.h4 Rd2 51.Kf3 Qc3 52.Ke4 Qd3) 45.Rf6 Threatening mate... how? 45...Re1 46.Kh2 Qg5 47.Rf2 Re3 (47...Rdd1 48.Qg7 Kg7 49.g4 Qe5 50.Rf4 Qf4 51.Kg2 Re2) 48.Qf3 Rf3 49.Rf3 Qe5 50.Rg3 (50.Kg1 Rd1 51.Rf1 Qd4 52.Kh1 Rf1 53.Kh2 Qd6 54.g3 Qd2) 50...Rd3 (50...h4 51.Kg1 Qe1 52.Kh2 hg3) 51.h4 (51.h4 Qg3 52.Kg1 Rd1; 51.Kg1 Qe1 52.Kh2 Qg3 53.Kg1 Rd1) 1–0. BeepBeepImAJeep (2605) – Pepsi_Ymbi (2350), lichess.org, 2016.

5.e3 e5 6.c4 (6.Nf3 c5=) 6...g6 (6...a6 7.d4=+) 7.Nf3 Bg7 8.Be2 0-0 9.d4 e4 (9...ed4 10.Bd4 Nc5 11.0-0=) 10.Nfd2 c6 11.Nc3 d5 12.Qb3 Nb6 13.a5 (13.cd5 Nbd5 14.Nce4 Ne4 15.Ne4 Re8+-) 13...dc4 (13...Nc4 14.Nc4 dc4 15.Bc4 cb5 16.Nb5+= (worse 16.Bb5 Be6 17.Qc2 a6=)) 14.Nc4 Nc4 15.Bc4 Bd7 (15...cb5 16.Nb5 Bg4 17.0-0+-) 16.a6 (16.bc6 bc6 17.0-0 Rb8+=) 16...cb5 17.ab7 bc4 (17...Rb8!? 18.Bd5 Nd5 19.Qd5 Qc7 20.Ra7 b4 21.Ne4 Qc2 22.Qd7 Qb1 23.Ke2 Qh1+=) 18.ba8Q Qa8 19.Qc4 Rc8 20.Qe2 Qb8 21.0-0 Bg4 (21...Be6 22.Rfb1 Bc4 23.Qd2+-) 22.f3+- ef3 23.gf3 Be6 24.Rfb1 Bc4 25.Qf2 Bd3 26.Rd1 Bc4 27.Rab1 Qc7 28.Ne4 Nd5 29.Rbc1 (29.Ba3 Bh6 30.Re1 Qd8+-) 29...Qd7 (29...Qe7 30.Nd2 Ba6 31.Rc8 Bc8 32.Re1+-) 30.Nc5 Qb5 31.Ba3 a5 32.Rb1 Qc6 (32...Qe8 33.Re1+-) 33.Rdc1 Bb5?? (33...Ba6 34.Na6 Qa6 35.Rc8 Qc8 36.Rb5+-) 34.Nd3 (better 34.Ne4 Bc4 35.Nd6+-) 34...Nc3 35.Nf4 (better 35.Rc3!? Qc3 36.Rc1 (36.Rb5?! Qd3 37.Ra5 Qd1 38.Kg2 Bd4=+) 36...Qa3 37.Rc8 Bf8 38.Nc5+-) 35...g5+= 36.Bb2 (36.Rb3 gf4 37.Rbc3 Qc3 38.Rc3 Rc3 39.Qb2 Re3 40.Qb5 Ra3 41.Qb8 Bf8 42.Qf4+-) 36...gf4= 37.Rc3?? (37.Bc3 Qg6 38.Kh1 fe3 39.Qe3+-) 37...Qg6–+ 38.Qg2 (38.Kh1 Qb1 39.Qg1 Qg1 40.Kg1 Rc3 41.Bc3 fe3 42.Ba5 Bd4 43.Kg2–+) 38...Rc3 (38...Qb1 39.Bc1 Rc3 40.h3 Qc1 41.Kh2 Bf1 42.Qd2 Qd2 43.Kg1 Qg2) 39.Qg6+- hg6 40.Bc3 Bd3 41.Rd1 (41.Rb8 Kh7 42.e4 a4+-) 41...Be2 42.Re1 Bf3 43.ef4 Bd5 (43...a4 44.Ra1 Bc6 45.d5+-) 44.Kf2 (better 44.Ra1+-) 44...a4+- 45.Ra1 Bb3 46.Ke3 Bf8 (46...Kf8 47.Kd3+-) 47.Bb2+- a3? (better 47...Bg7+-) 48.Ba3 Bg7 49.Bb2 (49.Bd6 Kh7+-) 49...Bd5 (49...Kf8 50.Ra7+-) 50.Rc1 (50.Ra5 Bg2+-) 50...Kh7 (50...Kf8 51.Rc5 Bg2 52.Rc8 Ke7 53.Rg8+-) 51.Rc7 Be6 52.d5 (better 52.Bc3+-) 52...Bf5?? (better 52...Bd5 53.Bg7 Kg7+-) 53.Bg7 (better 53.Rf7 Kg8 54.Rg7 Kf8 55.Bf6+-) 53...Kg7 54.d6 (54.Kd4!? Kf6 55.Rc6 Ke7+-) 54...Kf6 55.Re7 Be6 56.Kd4 Kf5 (56...Bg4 57.Kc5+-) 57.d7 (better 57.Rf7! Kg4+-) 57...Bd7 58.Rd7 Kf4 (58...Ke6 59.Rd5+-) 59.Rf7 Kg5 60.Rg7 Kh5 (60...Kf6 61.Rc7+-) 61.Rg8 (61.Ke5 Kg5 62.h4 Kh5 63.Kf4 Kh6 64.Rb7 g5 65.hg5 Kg6 66.Rc7 Kh5 67.Rc6 Kh4 68.Rh6) 61...g5 (61...Kh6+-) 62.Ke5 g4 63.Kf4 (63.Kf6 g3 64.hg3 Kh6 65.Rh8) 63...Kh4 (63...Kh6 64.Kf5 Kh7 65.Rg4 Kh6 66.Kf6 Kh7 67.Rh4 Kg8 68.h3 Kf8 69.Rh8) 64.Rh8 1–0. BeepBeepImAJeep (2605) – navidkhosravi (2310), lichess.org, 2017.

5.e3 Be7 6.c4 0-0 7.Nf3 Ne4 (7...Re8 8.Be2=) 8.Qc2 d5 9.Nc3 (9.Be2 a6=) 9...Nc3 (9...Ndf6 10.Ne4 de4 11.Ng5+=) 10.Bc3+= Bf6 (10...c5 11.a5+=) 11.cd5 Bc3 (11...ed5 12.Rc1+=) 12.Qc3+/– ed5 13.Rc1 d4 (13...a5!?+/–) 14.Nd4+- Nb6 15.Qc7 Qc7 (15...Na4 16.Bd3 Nb6 17.Be4+-) 16.Rc7 Na4 17.Bd3 Nb6 18.Be4 a6 (18...Rb8 19.Ke2+-) 19.ba6 f5 (19...Ra6 20.Ke2+-) 20.Bb7 Bb7 21.Rb7 (21.Rb7 Ra6 22.Ke2+-) 1–0. Intruder – cygan58, internet free game, 2018.

5.Nc3 0-0 6.Nf3 Bd7 7.e4 e5 8.Be2 c5 9.Bc4 b6 10.–0 Ng4?? (better is 10...Bc8+/–) 11.Bd5+- Be6 (11...Na6 12.Ba8 Qa8 13.ba6+-) 12.Ba8 Bc4 (12...Nf6 13.Ng5+-) 13.d3 Be6 14.Bd5 Bd5 15.Nd5 Bg5 (15...Nf6 16.Ne3+-) 16.Ng5 Qg5 17.f3 Ne3 (17...Nh6 18.a5 Nd7 19.Qe1+-) 18.Qd2 Qg2 19.Qg2 Ng2 20.Kg2 Nd7 21.Ne7 Kh8 22.Nf5 Nf6 23.Nd6 Nh5 24.Be5 f6 25.Bc3 Rd8 26.Nf7 Kg8 27.Nd8 1–0. Janek – Vincenzo, internet, 2016.

5.c4 0-0 6.e3 b6 7.Nf3 Bb7 8.Be2 Nbd7 9.0-0 h6 (9...a6 10.Nd4=) 10.d4 c5 11.Nbd2 cd4 12.Nd4 Nc5 13.Bf3 Bf3 (13...d5 14.cd5 Nd5 15.Nc4+=) 14.N2f3 (worse 14.gf3 Qc7=+) 14...Rc8 (14...Nfe4!?+=) 15.Nc6+- White prepares the advance a5 15...Qd7 (15...Qc7 16.a5 Ra8 17.Ne7 Qe7 18.Bf6 Qf6 19.ab6 ab6 20.Ra8 Ra8 21.Qd6+-) 16.Nfd4 (16.Nfe5!? Qc7 17.a5+-) 16...e5 17.Ne7 Qe7 18.Nc6 Qd7 19.a5 ba5 20.Ra5 Rc6 (20...a6 21.f4 Ng4 22.Ra3 ab5 23.cb5+-) 21.bc6 Qc6 (21...Qc7 22.Ra2+-) 22.Ra7+- Nce4 23.Ba3 (23.Qe2 Ra8 24.Ra8 Qa8+-) 23...Rd8 (23...Rc8 24.Qc2+-) 24.Qa4+- Qc8 (24...Qa4 25.Ra4 Rc8 26.Rc1+-) 25.f3 Ng5 (25...Nd2 26.Rc1 Qb8 27.Bb4+-) 26.e4 (26.Bd6 Qf5 (26...Rd6?? 27.Ra8 Rd8 28.Rc8 Rc8 29.Qa6+-) 27.c5 Qd3+-) 26...Nh5? (26...Qb8 27.Ra6 Ne8 28.Rd1+-) 27.Rd1 (27.Bd6 Nf4 28.Be7 Re8+-) 27...Nf4 28.g3?? (28.Rd6 Rd6 29.Bd6+-) 28...Nf3 (better 28...Ne2!? 29.Kf2 Nc3–/+) 29.Kf2= Qh3 Threatening mate... how? 30.gf4 (30.Kf3?? Qg2 31.Kg4 Qe2 32.Kh4 Qh5) 30...ef4?? (30...Nd4 31.Rd4 Qh2 32.Ke1 ed4=+) 31.Rh1 (better 31.Rd3+-) 31...Ne5 (31...Nd2!? 32.Ke1 Qe3 33.Kd1 Ne4 34.Bb4 Nf2 35.Kc2 Qe4 36.Kd2 Nh1 37.Bc3–+) 32.Qd1 Qe3 33.Kf1 f3 (better 33...Qa7 34.Bc1 Qa2–+) 34.c5?? (34.Rb7 Qa3 35.Kf2 Qa2 36.Ke3 Qc4 37.Rf1–+) 34...Ng4 35.Qe1 Qd3 36.Kg1 Qd4 (36...Qc2 37.Qd2 Qd2 38.cd6 Qf2) 37.Kf1–+ Qd3 (37...Qc4 38.Kg1 Qc2 39.Qd2 Qd2 40.cd6 Qf2) 38.Kg1 Qd4 (38...Qc2 39.Qe2 Qe2 40.cd6 Qf2) 39.Kf1= Qd3 (39...Qc4 40.Kg1 Qc2 41.Qd2 Qd2 42.cd6 Qf2) ½–½. BeepBeepImAJeep (2630) – NiK_the_TRoll (1885), lichess.org, 2017.

5.c4 0-0 6.e3 Bd7 7.Nf3 c6 8.Be2= cb5 (8...a6 9.0-0=) 9.cb5 (9.ab5 e5=) 9...d5 10.0-0 a6 11.Nc3 ab5 12.ab5 Be8?? (better 12...Ra1 13.Qa1 Bc8+=) 13.Ra8+- Qb6 (13...Bd7 14.Qc2+-) 14.Qb3 (14.Rb8 Qc7 15.Ra8 Bd7+-) 14...Ne4 (14...Nbd7+-) 15.Rb8 Nc5 16.Qc2 Bd7 (16...f6 17.Ra1+-) 17.Rf8 Bf8 18.Na4 (better 18.d4 Ne4 19.Ne4 de4+-) 18...Na4 19.Qa4 Qd6 (19...f6 20.Qa8 Kf7 21.Rb1+-) 20.h3 (20.Qa8 Qb4 21.Bc3 Qc5 22.Qb7 Bc8+-) 20...h5 (20...f6 21.Ra1 Qc7 22.Qa8+-) 21.Be5 (21.Qh4 g6+-) 21...g6 (21...Qe7+-) 22.Bd6 (22.Bd6 Bd6 23.Qa8 Kg7 24.Qd8 Bb5 25.Bb5 Bh2 26.Kh2 g5 27.Qg5 Kh7 28.Ne5 h4 29.Qh5 Kg7 30.Qf7 Kh6 31.Qg6) 1–0. BeepBeepImAJeep (2490) – GodlikeMoves (1840), lichess.org, 2017.

5.c4 0-0 6.e3 h6 7.Nf3 Kh7 (7...a6 8.d4=) 8.Nc3 b6 (8...a6 9.d4=) 9.Be2 Bb7 10.0-0 c6 11.d4 cb5 (11...Kg8 12.Qd3+=) 12.cb5 Nbd7 13.Rc1 Rc8 (13...Kg8 14.Qc2+=) 14.Bd3 g6 15.h3 Rg8 16.Nd2 Bf8 17.Nde4 (better 17.e4+=) 17...Bg7? (better 17...Ne4 18.Ne4 Rc1 19.Qc1 Be4 20.Be4 Nf6+=) 18.Nd6+- White gets strong initiative 18...Rc7 19.Nf7 Qe7 (19...Qf8 20.Ne5 Ne5 21.de5+-) 20.Ne5 Ne5 21.de5 Nd7 (21...Ne8 22.Qh5 Qf7 23.Ne2+-) 22.f4 (22.Nd5 Rc1 23.Ne7 Rd1 24.Bg6 Kh8 25.Rd1 Ne5 26.Ng8 Ng6 27.Bg7 Kg7 28.Rd7 Kg8 29.Rb7+-) 22...Nc5 23.Bb1 Rd7 24.Qg4 Threatening mate: Qxg6 24...Bh8 (better 24...Nd3+-) 25.Rcd1 Rd1 26.Rd1 (26.Nd1?! Na4 27.Bd4 Nc5+-) 26...Ba8 (26...Qf7 27.h4 Kg7 28.h5+-) 27.Ba3 (27.h4 Rg7+-) 27...Qb7 (27...Qf7 28.Rd6+-) 28.Bc5 bc5 29.Be4 Qb8 (29...Qf7+-) 30.Rd7 Rg7 31.Qg6 (31.Bg6 Kg8 32.Qe6 Kf8 33.Rg7 Kg7 34.Qf7) 31...Kg8 32.Qe6 Kf8 33.Qf6 (33.Rg7 Bg7 34.Bg6 Bd5 35.Nd5 Qe5 36.Qf7) 33...Kg8+- 34.Rd8 Qd8 35.Qd8 A deflection 35...Kf7 36.Qa8 Rg8 (36...Rg2 37.Kg2 c4 38.Qd5 Ke7 39.Bg6 Be5 40.fe5 h5 41.Qd6) 37.Bd5 Kg7 (37...Ke7 38.Qb7 Ke8 39.Qc8 Ke7 40.Bg8 Be5 41.Nd5 Kd6 42.Qe6) 38.Qg8 1–0. BeepBeepImAJeep (2635) – bcatalin20 (1905), lichess.org, 2016.

5.c4 0-0 6.Nf3 Nfd7 7.d4= Re8 (7...c5 8.e3=) 8.e4 Nf8 (8...a6 9.Bd3=) 9.Be2 a6 10.0-0 ab5 11.ab5 Ra1 12.Ba1 c6 13.Nbd2 cb5 14.cb5 Qa5 (14...d5 15.Bd3=) 15.Qb3 Nbd7 16.Nc4 White intends b6 16...Qa7 17.b6 Qb8 18.d5 ed5 19.ed5 Bf6 20.Bf6 Nf6 21.Ne3 Ng4 22.Nd4 Ne3 23.fe3 Ng6 (23...Re5!?+=) 24.Rc1 Ne5 25.Rc7 Bg4 (25...Qa8!?+/-) 26.Bb5 (26.Bg4 Ng4 27.Nf5 Qd8+-) 26...Rf8 27.h3 Bh5 28.Kh2 (better 28.Nf5!?+-) 28...Qd8 29.Qa3 (better 29.Rb7!? Qh4 30.g3+/-) 29...Qh4 30.Qd6?? (better 30.Qc3+=) 30...Ng4 31.Kg1 Qe1 32.Bf1 Qe3 (32...Qf2 33.Kh1 Qf1) 33.Kh1-+ Nf2 (33...Qd4?! 34.hg4 Bg4 35.Rb7=) 34.Kh2 Qd4 35.Qg3? (35.Qc5 Qe5 36.Kg1-+) 35...Ne4 36.Qf4 Qb6 37.Rc4 (37.Re7 Nf6 38.Qe5 Qf2-+) 37...Nf6 (37...f5!? 38.Bd3-+) 38.d6 Qd8 39.Rd4 Bg6 40.Bb5 Nd7 41.h4 (41.Qh4 Qh4 42.Rh4 Rd8-+) 41...Nf6 42.d7 Bh5 (42...Qa5 43.Qe5-+) 43.Qd6 Bg6 44.Qe5?? (44.Qf4 Qa5 45.Qe5-+) 44…h6 0-1. RobGordon (2490) - zsolti_83 (2610), Rated Bullet game, lichess.org, 2020.

5.c4 a6 6.e3 ab5 7.ab5 Ra2?? 8.Ra2+- c6 9.Nf3 cb5 10.cb5 Nbd7 11.Nc3 d5 12.Be2 Nc5 (12...0-0 13.d4+-) 13.0-0 Bd7 14.d4 Nce4 15.Ne4 Ne4 16.Ne5 0-0 17.Bd3 Bf6 (17...Be8 18.Qe2+-) 18.Nd7 Qd7 19.Be4 de4 20.Qb3 Be7 (20...Rd8 21.Rfa1+-) 21.Ba3 Ba3 22.Ra3 b6 (22...Rc8 23.Ra7+-) 23.h3 (23.Qc4!? Qd6 24.Rfa1 h6+-) 23...Rc8 24.Rfa1 h6 (24...Qe8 25.Ra6+-) 25.Ra7 Qd6 26.Qb1 (better 26.Qa3 Qa3 27.R7a3+-) 26...Qc5 (26...Qd5+-) 27.dc5 bc5 28.Qe4 c4 (28...Kh8 29.Ra8 g5 30.Rc8 Kg7 31.Qe5 f6 32.Qe4 f5 33.Qe6 c4 34.Ra7) 29.Ra8 Ra8 (29...f5 30.Qe6 Kh8 31.Qc8 Kh7 32.Qf5 g6 33.R1a7) 30.Ra8 1–0. BeepBeepImAJeep (2560) – Ahmetcan2017 (1785), lichess.org, 2017.

5.c4 b6 6.e3= c6 7.Nf3 cb5 8.cb5 Nbd7 9.Be2 Nc5 10.0-0 Nce4 (10...0-0 11.Nc3=) 11.d4 (11.Nd4 Qc7+=) 11...d5 (11...0-0 12.Bd3=) 12.Nbd2 Bb7 13.Ne4 de4 14.Ne5 0-0 15.Rc1 Rc8 16.Nc6 Bc6 17.bc6 Bd6 18.Qb3 Bc7 (18...Rc7 19.f3+=) 19.Ba3 (19.Ba6 Rb8+-) 19...Re8 20.Ba6 Qd6?? (better 20...Rb8+=) 21.Bd6+- Bd6 22.Bc8 Rc8 23.a5 ba5 (23...Bc7 24.f3+-) 24.c7! Nd5 (24...Rc7 Deflection from b8 25.Qb8 A double attack) 25.Qb7 Rc7 (25...Ne7 26.Qb5 Bb4 27.f3 ef3 28.Rf3+-) 26.Qb8 Bf8 27.Rc7 Nc7 28.Qc7 h6 29.Qa7 Bb4 30.Qa8 Kh7 31.Qe4 g6 32.Qb7 Kg7 33.Rb1 (33.Rb1 h5 34.Rc1+-; better 33.Rc1!? Bd6 34.Qd7 Bb8+-) 1–0. BeepBeepImAJeep (2645) – MONGIBELLO61 (1630), lichess.org, 2017.

5.c4 c5 6.e3 b6 7.Nf3 Nbd7 8.Be2 Bb7 9.0-0 0-0 10.d4 cd4 11.Nbd2 (11.Nd4 Qc7=) 11...d5 (better 11...de3!? 12.fe3 Nc5–/+) 12.Nd4 dc4 13.Bc4 Bd5 (13...Rc8 14.a5=) 14.Be2 (14.Bd5 Nd5 15.Nc6 Qe8+-) 14...Ne4 (14...Rc8 15.Bf3 Bd6 16.Nc6 Bc6 17.Bc6=) 15.Bf3 (15.Nc6 Qe8+-) 15...Nd2= 16.Qd2 Bf3 17.Nf3 Nc5 18.Nd4 (18.Qe2 Qc7=) 18...Bf6 (18...e5!? 19.Nf3 Qd2 20.Nd2 Rfd8=+) 19.Qc2= Bd4 20.Bd4 Rc8 21.Rad1 Qe7 22.Qa2 Ne4 23.Be5 f6 24.Ba1 Qf7 25.Rd4 e5?? (better 25...Nc5=) 26.Qf7+- Rf7 27.Re4 Rc2 (27...Rfc7 28.f4 Rc1 29.Bb2+-) 28.Rb4 Rfc7 29.Rbb1 (29.Rb2 Rb2 30.Bb2 Rc2+-) 29...Ra2 30.Bb2 (30.Rfc1 Rc1 31.Rc1 Ra4 32.Rc8 Kf7+-) 30...Ra4 (30...Rc2 31.Bc1 Ra4+-) 31.Ra1 (better 31.f4!? ef4 32.ef4+-) 31...Rb4+- 32.Ba3 Rb3? (better 32...Rb5 33.e4 a5+-) 33.Rad1?? (33.Rfb1!? Rd3+-) 33...h6?? (better 33...Ra3 34.Rd8 Kf7–/+) 34.Rd8 (34.Bd6 Rc2 35.Rd5 Rcb2+-) 34...Kh7 35.Bc1 (35.Bd6 Rb7+-) 35...Rcc3 (35...Rb5 36.e4+=) 36.Bd2 (36.Rd7!?+-) 36...Rc2 37.Rd7 (37.Rd5 Rcb2+-) 37...Rb5+= 38.Be1 (38.Rd1 a5+=) 38...Rbb2 (better 38...a5!?=+) 39.Ra7+= b5 40.h3 b4 41.Rb7 b3? (41...Rc4 42.f4 Rcc2 43.Rf2+-) 42.Ba5 (42.Bb4 Kg6+-) 42...Re2? (better 42...Kg6!? 43.Bb4 Ra2+-) 43.Bc3+- Rbc2 44.Rb3 Red2?? (44...Ra2+-) 45.Be5 (45.Bd2!? Rd2 46.Rb7 Kg6+-) 45...Rd5?? (45...fe5 46.Rb5+-) 46.Rb6 (better 46.Bd4+-) 46...Re5 47.Rb4 Rf5 48.Rf4 (48.Rf4 Rf4 49.ef4+=) 1–0. BeepBeepImAJeep (2535) – Ahmetcan2017 (1810), lichess.org, 2017.

5.c4 Kf8 6.e3 c5 7.Nf3 e5 8.Be2 (8.Nc3 Qc7+=) 8...Be6 (8...e4!? 9.Ng1 d5=) 9.d3 b6 (9...Nfd7 10.0-0+-) 10.e4 (10.Ng5 a6+-) 10...Nbd7 (10...a6 11.0-0+=) 11.Nc3 (11.Ng5 Kg8+-) 11...Qc7 12.Nd5 Bd5 13.cd5 h6 14.Nd2 g5 (14...Kg8 15.0-0+=) 15.0-0 Kg7 16.Nc4 Rag8 (16...a6 17.ba6 Rhb8 18.Ne3+-) 17.Ne3+- Kf8 18.Nf5 Bd8 19.Bh5 (19.Qc2 Ke8+-) 19...Nh7? (better 19...Nh5!? 20.Qh5 g4+=) 20.Rc1 Ndf6 (20...Nhf6 21.Be2+-) 21.d4 (21.Nh6 Rg7 22.Nf5 Rgg8+-) 21...Ne4 (21...g4 22.de5 de5 23.f4 ef4 24.Bf7 Qf7 25.Nh6+-) 22.de5 de5 23.d6 (23.Qe2 Qd7 24.Nh6 f5 25.Ng8 Kg8+-) 23...Qd7 24.Bg4 (better 24.Nh6!? Rg7 25.Be5+-) 24...h5+- 25.Nh6?? (better 25.Qc2 Nhf6 26.f3+-) 25...hg4=+ 26.Ng8 Rg8 (26...Kg8 27.Be5 Bf6 28.Qd5 Be5 29.Qe5 Qd6 30.Qd6 Nd6 31.Rfd1–/+) 27.Be5 Qf5 28.Qd5? (better 28.Bg3=+) 28...Qe6?? (better 28...Nhf6 29.Qa8 Qe5 30.Qd8 Kg7–+) 29.Qe6?? (better 29.Qe4 Nf6 30.Qe2+-) 29...fe6+= 30.Rfe1 Nef6 31.Bf6 Nf6 32.Re6 Kf7 33.Rce1 Re8 34.Re8 (34.R6e5 Re5 35.Re5 Nd7=+) 34...Ne8–/+ 35.d7 (better 35.Rd1–/+) 35...Nd6?? (better 35...Nf6–/+) 36.g3 (36.Kf1 Bf6+-) 36...c4 37.Kg2 (37.Re3 c3=) 37...Bf6 38.h3 (38.f3 gf3 39.Kf3 c3=) 38...gh3=+ 39.Kh3 c3 40.Re2? (40.f4 gf4 41.gf4 Nf5–/+) 40...Be7?? (better 40...Nf5 41.Re4 c2–+) 41.Kg4= Nc4 42.Rc2 Ne5 43.Kf5 Nd7 44.Rc3 Nc5 45.a5? (better 45.Rc4!?=) 45...ba5–/+ 46.f4 a4 (46...Nb7!?–/+) 47.fg5=+ a3?? (better 47...Kg8=+) 48.g6 Kf8 (48...Kg8 49.Ra3 Bd8 50.Ra7+-) 49.Ra3 Nd7 (49...Ne6 50.Ra7 Nd4 51.Ke5 Nb5 52.g7 Kg7 53.Re7 Kg6 54.Re6 Kg5+-) 50.Ra7 Nc5 (50...Nb6 51.g7! Kg7 52.Re7 Kg8 53.Re6+-) 51.Ra8 (51.b6 Nb3 52.g7 Kg7 53.Re7 Kg8 54.b7 Nd4 55.Kg6 Ne6 56.Re6 Kf8 57.b8Q) 51...Bd8 (51...Kg7+-) 52.Rd8 Ke7 53.Rd5 (53.Rd5 Nd7 54.Rd7 Kd7 55.g7 Kc7 56.g8Q Kd6 57.Qc4 Ke7 58.Qc7 Ke8 59.Ke6 Kf8 60.Qf7) 1–0. BeepBeepImAJeep (2700) – SANTANA_LUIS (2365), lichess.org, 2020.

5.e3 c5 6.c4 Bd7 (6...0-0 7.d3=+) 7.Nf3 a6 (7...0-0 8.Be2=) 8.Nc3 ab5 (8...0-0 9.Bd3=) 9.ab5 Ra1 10.Qa1 Qb6 (10...0-0 11.Qa7=) 11.Be2 0-0 12.0-0 d5 13.d4 (13.Qa2 dc4 14.Qc4 Rc8+=) 13...cd4= 14.Nd4 dc4 15.Bc4 Bc8 (15...Qc7 16.Bd3+=) 16.Be2 Nbd7 17.Rd1 Nc5 18.h3 (better 18.Nf3+=) 18...Nd5? (18...e5!? 19.Nf3 e4=) 19.Nd5 (better 19.Nf5! Bd8 20.Nd5 ed5 21.Ng7+-) 19...ed5+= 20.Nf3 White gets in control 20...Be6? (better 20...Qg6 21.Kf1 Rd8+=) 21.Bg7+- Rd8 22.Bh8 Threatening mate: Qg7 22...f6 (better 22...Bf8+-) 23.Bf6 Bf6 24.Qf6 Ne4 25.Qd4 Qc7 (25...Qd4 26.Nd4 Kf7 27.Ra1+-) 26.Bd3 Nd6 (26...Rf8 27.Be4 de4 28.Ng5+-) 27.Qf6 (better 27.Ng5 Nb5 28.Bb5+-) 27...Ne4 (27...Re8 28.Ng5 Qg7 29.Bh7 Kh8+-) 28.Be4 (better 28.Qe6 Kg7 29.b6+-) 28...de4 (28...Rd6 29.Ng5 Qg7+-) 29.Rd8 Qd8 30.Qd8 Kf7 (30...Kg7 31.Qe7 Kg8 32.Qe6 Kg7 33.Qe7 Kg8 34.Ng5 h6 35.Qf7 Kh8 36.Qf8) 31.Ng5 (31.Ne5 Kg7 32.Qe7 Kg8 33.Qe6 Kg7 34.Qe7 Kg8 35.Qf7 Kh8 36.Qf8) 31...Kg6 32.Ne6 Kf5 (32...h5 33.Qf8 b6 34.Qg7 Kf5 35.Nd4) 33.Nd4 (33.Nf8 h5 34.Qd6 h4 35.Qf4) 33...Ke5 (33...Kg6 34.Qg8 Kf6 35.Qe6 Kg5 36.Qf5 Kh6 37.Qf6 Kh5 38.g4) 34.Qe7 (34.Qd7 Kf6 35.Qe6 Kg5 36.Qf5 Kh6 37.Qf6 Kh5 38.g4) 34...Kd5 35.Qe6 (35.Qb7 Kc4 36.Qc6 Kb4 37.b6 h5 38.b7 Ka3 39.b8Q h4 40.Qb3) 35...Kc5+- 36.b6 Kb4 (36...h5 37.g4 hg4 38.hg4 Kb4 39.Qd6 Kc3 40.Qc5 Kb2 41.Qc2 Ka3 42.Qb3) 37.Qb3 (37.Qb3 Kc5 38.Qb5 Kd6 39.Qc4 h6 40.Qc7 Kd5 41.Qb7 Kc5 42.Qc6 Kb4 43.Qb5 Kc3 44.Qb3 Kd2 45.Qc2 Ke1 46.Qc1; 37.Qd5 h6 38.Qb5 Kc3 39.Qb3 Kd2 40.Qc2 Ke1 41.Qc1) 1–0. BeepBeepImAJeep (2615) – Ahmetcan2017 (1770), lichess.org, 2017.

6.c4 c6 7.d4 Nbd7+=.

6.c4 c6 7.Nf3 a6 8.d4=.

6.c4 c6 7.Nf3 cb5 8.ab5= Nbd7 (8...e5 9.Nc3=) 9.Be2 (9.d4 Nb6=) 9...e5 (9...Nb6 10.0-0=) 10.0-0 Nc5 (10...Qc7 11.d4+=) 11.Nc3 (11.d4 ed4 12.Nd4 d5+=) 11...e4 12.Nd4 h6 (12...d5 13.cd5 Nd5 14.Nd5 Qd5 15.f3+=) 13.Qc2 (13.f3 ef3 14.Bf3 Nd3+/–) 13...a6 (13...Be6 14.f3+/–) 14.ba6 (14.f3 ef3 15.Bf3 Ncd7+/–) 14...ba6 (14...Ra6 15.f3+/–) 15.f3 ef3 (15...Bb7 16.fe4 Nfe4 17.Nd5+=) 16.Bf3 (worse is 16.Nf3 Re8+=) 16...Rb8? (better is 16...Bb7!?+/–) 17.Nc6+- Qc7 (17...Rb2 18.Qb2 Qc7 19.d4+-) 18.Nb8 Qb8 19.Nd5 Nd5 20.Bd5 Be6 (20...Qb3 21.Qg6 Qb2 22.Rf7 Qa1 23.Rf1 Kh8 24.Ra1+-) 21.Be6 (21.Qc3 f6 22.Be6 Ne6 23.Ra6 Qb7+-) 21...Ne6 (21...fe6 22.Rf8 Bf8 23.d4+-) 22.Ra6 Nc5 23.Ra2 Qb6 (23...Qb7 24.Rfa1 Qb3 25.Qc3 Qc3 26.Bc3+- (26.dc3?! Bg5+-)) 24.Bd4 (24.Qf5 Qc6+-) 24...Qb3 25.Qb3 Nb3 26.Bc3 Nc5 27.Rfa1 (27.Ra7 Re8+-) 27...Ne4 (27...Kh7 28.Kf1+-) 28.Bd4 Kh7 29.d3 Nc5 30.Bc5 dc5 31.Ra8 Ra8 1–0. Intruder – bft2345g, internet free game, 2018.

6.c4 c6 7.Nf3 cb5 8.Be2 bc4–/+ 9.Bc4 d5 10.Be2 Nc6 11.0-0 Bd7 12.d4 Rc8 13.Nc3 Ne4 (13...Qa5 14.Rc1–/+) 14.Ne4=+ de4 15.Nd2 f5 16.Rc1 Qa5 17.Nc4 Qc7 (17...Qd5 18.f3=+) 18.Ne5 Qd8 19.Nd7 Qd7 20.Bc4 White plans d5 20...Kh8 (20...Na5 21.Bb5 Qd5 22.Rc8 Rc8 23.Qb1–/+) 21.d5 ed5 22.Bd5 Nb4 (22...Rcd8 23.Bc4–/+) 23.Bb3? (better 23.Qd4!? Bf6 24.Qb4 Bb2 25.Rc8 Rc8 26.Bb7=) 23...Nd3–/+ 24.Bd4?? (better 24.Rc8 Qc8 25.Bd4–/+) 24...Rc1–+ (24...Nc1? 25.Bg7 Kg7 26.Qd7+-) 25.Qc1 (25.Qe2 Rfc8 26.Bd1 Bc5 27.Bc5 Nc5–+) 25...Nc1 26.Rc1 Rc8 27.Rd1 Qe8 28.g3 (28.Kf1 Qc6 29.Kg1 a6–+) 28...Bf6 29.Ba7 (29.Bf6 gf6 30.Kg2 Rc3–+) 29...Rd8 (29...Rc3 30.Rb1–+) 30.Rb1 (30.Rc1 Rd3 31.Bd1 Qd7–+) 30...Qc6 31.Bd1 (31.a5 Rd2 32.Bb6 Qb5–+) 31...h6 (better 31...Rd2 32.Bb3–+) 32.Be2 (32.Bh5 Qa4 33.Bb6 Qc2–+) 32...Rd2 (better 32...Qc2 33.Rb7 Qe2 34.Rb8–+) 33.Bb5 Qc2 34.Rf1 g5 (better 34...Qc7 35.Bd4 Bd4 36.ed4–+) 35.Bb6 Bc3 36.Ba5 (36.h3–+) 36...Ba5 37.Kg2 Rd1 38.Rd1 (38.Be8 Rf1 39.Kf1 Qd1 40.Kg2 Qf3 41.Kg1 Be1 42.h4 Bf2 43.Kf1 Bg3 44.Kg1 Qf2 45.Kh1 Qf1) 38...Qd1 39.Bd7 (39.h4 Qf3 40.Kh2 Qf2 41.Kh1 gh4 42.Bf1 hg3 43.Bg2 Qe1 44.Bf1 Qf1) 39...Qd2 (39...Qf3 40.Kg1 Be1 41.h4 Bf2 42.Kf1 Bg3 43.Kg1 Qf2 44.Kh1 Qf1) 40.Bf5–+ Bc3 (40...Bb6 41.Be4 Be3 42.Kh3 Qf2 43.a5 h5 44.g4 Qf1 45.Bg2 Qf4 46.Bb7 Qg4) 41.Be4 Qb2 42.Kf1 Qc1 43.Kg2 Be1 44.Kg1 (44.Kf3–+) 44...Qd2 45.Kg2 Qf2 46.Kh3 h5 47.Bg6 (47.Bd3 Qf3 48.Bb5 Bg3 49.hg3 Qh1) 47...g4 (47...Qf1) 48.Kh4–+ Qf1 (better 48...Qh2 49.Kg5–+) 49.Kg5 Qf6 (49...Kg7 50.Kh5 Kf6 51.Kh6 Qh3 52.Bh5 Bd2 53.a5 Be3 54.Kh7 Qh5 55.Kg8 Qf7 56.Kh8 Qg7) 50.Kh6?? (better 50.Kf6 h4 51.gh4 Bh4 52.Kf7+-) 50...Bc3 (better 50...Qe5 51.Bb1–+) 51.Kh5 (51.Kh5 Kg7 52.Bd3–+). BeepBeepImAJeep (2345) – RayCarrot_Youtube (2180), lichess.org, 2015.

6.c4 e5 7.d4 ed4 8.Bd4+=.

6.Nf3 a6 7.Be2 ab5 8.ab5 Ra1 9.Ba1 b6 10.d4 Bb7 11.c4 Nbd7 12.0-0 Qa8 13.Nc3 Ne4 14.Ne4 (14.Bb2 Nc3 15.Bc3 Be4+=) 14...Be4 15.Nd2? (better 15.Bc3=) 15...Bg2-/+ 16.Re1 Bb7 17.Bf3 (17.Bd3 Qa2-/+) 17...Nf6 (17...Bf3 18.Qf3 Qa2 19.Qe2-+) 18.Bb7 (18.e4 Nd7-/+) 18...Qb7 19.Bc3 d5 20.Qe2 c6 21.bc6 Qc6 22.cd5?? (22.Bb2 Bb4 23.Rc1 Bd2 24.cd5 Qd5 25.Qd2 h6-+) 22...ed5 (better 22...Qc3 23.de6 fe6-+) 23.Bb2 Qc2 24.Nf3 Qg6 25.Kf1 Ne4 26.Ne5 Qf5 27.f4? (27.f3 f6 28.Nd3 Rc8-+) 27...f6 (27...Bh4 28.Rd1 Qh3 29.Qg2 Qe3 30.Bc1-+) 28.Nc6 (28.Nd3 Ra8-+) 28...Bd6 29.Qg2? (29.Rc1-+) 29...Rc8 30.Na7 (30.Rc1-+) 30...Rc2!! 31.Qc2 Ng3!! 32.hg3 Qc2 33.Re2 Qd1 (better 33...Qc4 34.Kf2-+) 34.Kf2 h5 (34...Qa4 35.Nc8 Bb4 36.Nb6-+) 35.Nb5 (35.Nc8 Bb4 36.Nb6 Qh1-+) 35...Bf8 (35...Bb4!? 36.Bc3 Bc3 37.Nc3-+) 36.Nc3 Qb3 37.Nb1 (37.e4-+) 37...h4! 38.gh4 Qd3 (38...Bb4 39.Na3 Ba3 40.Ba3 Qa3 41.e4-+) 39.Na3 (39.Nc3 Qc4 40.Nb1 b5-+) 39...Qh7 (39...Ba3 40.Ba3 Qa3 41.Kf3-+) 40.Kg3 (40.Kf1-+) 40...Ba3 41.Ba3 Qg6 (better 41...Qd3 42.Ra2 Qe3 43.Kg2 Qb3-+) 42.Kf3 (42.Kf2-+) 42...Qh5 43.Kf2 Qg4 (43...Qh4 44.Kg2-+) 44.Ke1 (44.Rc2 b5-+) 44...Qh4 45.Rf2 (45.Kd2 Qh1 46.Re1 Qg2 47.Re2 Qf1-+) 45...Qg4 (45...Kf7 46.Bd6-+) 46.Re2 (46.Rc2 Qd7-+) 46...Qf5 (46...Qg1 47.Kd2-+) 47.Kd2 (47.Bd6 Kf7-+) 47...Qb1 48.Bb2 0-1. BitChess (2365) - puppyluvr420 (2645), Rated Bullet game, lichess.org, 2016.

5.c4 Bg7 6.e3 Nh5 7.Nc3 0-0 8.Be2 Nf6 9.Nf3 c6 (9...a6 10.0-0+=) 10.0-0 cb5 11.cb5 b6 12.d4 Nbd7 13.Nd2 d5 14.Rc1 Bb7 15.Bf3 White terminates the opponent with strong threats 15...Qe7 (15...Qb8 16.Ba3 Rc8 17.Be7+=) 16.e4 (better 16.Nc4! Rfb8 17.Ba3+-) 16...de4= 17.Nde4 Ne4 18.Ne4 Be4 (18...Bd5 19.Qd3 Rfd8 20.Ba3+=) 19.Be4+= Rac8 20.Qd3 Rc1 21.Rc1 Nf6? (better 21...Rd8 22.Bc6 Nc5=) 22.Ba3+- Qd7 23.Bf8 Ne4?? (better 23...Bf8 24.Bf3 Nd5+-) 24.Bg7 (24.Qe4?! Bf8 25.Rd1 Bd6+-) 24...Kg7 (24...Nf2 25.Kf2 Kg7 26.Qe3+-) 25.Qe4 (25.Qe4 f6 26.Qf4+-) 1–0. BeepBeepImAJeep (2735) – Hondachess (1765), lichess.org, 2017.

5.e3 Bg7 6.c4 Nh5 7.Nc3 (7.Bg7 Ng7 8.d4 Nd7+=) 7...a6 8.Be2 ab5 9.ab5 Ra1 10.Qa1 0-0 11.Nf3 c6 12.0-0 cb5 (12...e5 13.d4+-) 13.cb5 (13.Nb5 Qe7+-) 13...Qc7 (13...Qe7 14.Rc1+-) 14.Rc1 Nd7? (14...Qe7 15.Qa8 Nd7 16.Na4+-) 15.Ne4 (better 15.Nd5! Qb8 16.Ne7 Kh8 17.Ng5 (17.Rc8?! Rc8 18.Nc8 Qc8+-; 17.Nc8?! Rc8 18.Rc8 Qc8+-) 17...Bb2 18.Qb2 Nhf6 19.Qc3+- (19.Nc8?! Rc8 20.Rc8 Qc8 21.Nf7 Kg8 22.Nd6 Qc7+-; 19.Rc8?! Rc8 20.Nc8 Qc8 21.Nf7 Kg8 22.Nd6 Qc7+-)) 15...Bb2 16.Qb2 (worse 16.Rc7 Ba1 17.Nd6 Nb6=+) 16...Qb6 (16...Qb8 17.Qb4 d5 18.Nd6+-) 17.d4 (better 17.Qb4!? Nc5 18.Nc5 dc5 19.Qc5 Qc5 20.Rc5+-) 17...Nhf6+- 18.Ned2 d5 19.Nb3 Qd6 20.Nc5 Nc5 21.dc5 Qd7?? (better 21...Qe7+-) 22.Qf6+- Qd8 23.Qd8 Rd8 24.c6 bc6 25.bc6 Re8 26.h3 Re7 (26...f6 27.Nd4 Kf7 28.Ra1+-) 27.Nd4 f6 (27...e5 28.Nb5+-) 28.Nb5 White prepares c7 28...Ba6 (28...e5 29.Nd6 Be6 30.c7+-) 29.c7 Bb5 (29...e5+-) 30.c8Q Kg7 31.Bb5 f5 32.Rc7 f4 (32...Rc7 33.Qc7 Kf8 34.Qd8 Kf7 35.Qe8 Kg7 36.Qe7 Kg8 37.Bd7 h5 38.Be6 Kh8 39.Qf7 d4 40.Qg8) 33.Re7 Kf6 34.Qf8 Ke5 (34...Kg5 35.Qf4 Kh5 36.Rh7) 35.Qf4 1–0. BeepBeepImAJeep (2755) – Aurorachess11 (1755), lichess.org, 2015.

5.a4 cb5 6.ab5 b6 7.c4 d5 8.Nf3 dc4 9.Bc4 Nbd7 10.0-0 Be7 11.Ng5 Nc5 12.d4 Nce4 13.Ne4 Ne4 14.Qf3 (14.Qg4 Nd6 15.Bd3 0-0+/–) 14...Bb7+= 15.Nc3 (15.Rc1 Bh4 16.Rc2 Nd6=) 15...Nd6= 16.Qe2 0-0 (16...Nc4!? 17.Qc4 Bd6=) 17.Bd3+/– Bf6 18.Qh5 (18.Ra2 Be7+/–) 18...h6 (18...g6 19.Qh6+=) 19.Ra4+/– Bh4 (19...Re8 20.e4 Nc8 21.e5+/–) 20.d5 Qg5?? (better is 20...Bf6 21.de6 fe6+/–) 21.Rh4+- f5 22.Qg5 hg5 23.Rh5 ed5 24.Rg5 Rf7 25.Ne2 a6 26.Ng3 ab5 27.Nf5 Nf5 28.Bf5 Rc7 29.Be6 (29…Kh7 30.Bd5 Bd5 31.Rh5 Kg8 32.Rd5+-) 1–0. Woelfelschneider,Peter – Fissenebert,H, corr ICCF 2–2438, 1986.

5.a4 Be7 6.Nf3 0-0 7.Be2 h6 (7...e5 8.Nc3=) 8.0-0 (8.Nc3 e5=) 8...e5 9.c4 (9.Nc3 e4 10.Nd4 c5=) 9...c6 (9...a6 10.d4 e4 11.Nfd2+=) 10.d4+= e4 11.Nfd2 d5 12.Nc3 Bf5 (12...Be6 13.bc6 bc6 14.Ba3+=) 13.c5 (13.cd5 cd5 14.Qb3 Qd7+=) 13...Nbd7 (13...Qc7 14.a5=) 14.a5+= Bg6 (14...Qc7 15.f3+=) 15.a6 Qc7 16.ab7 Qb7 17.Nb3 (17.Qb3 Rfc8+=) 17...Nb8 (17...cb5 18.Na5 Qc7 19.Nb5+/–) 18.Na5+/– Qc7 19.bc6 (19.Qb3 Qd7+/–) 19...Nc6 (19...a6 20.Na4+/–) 20.Nb5 Qd7 21.Nc6 Qc6 22.Na7 Qb7 23.Nb5 Rfd8 (23...Ra1 24.Ba1 Rb8 25.Nc3+/–) 24.Qc2 Rac8?? (better is 24...Qc6+/–) 25.Ra7+- Qd7 (25...Qb6 26.Re7 Nd7 27.Nc3+-) 26.Rd7 Rd7 27.c6 Rdd8 (27...Bf5 28.Rc1 Kh7 29.Qb3+-) 28.c7 Rd7 (28...Rf8+-) 29.Qc6 Bd6 30.Nd6 (30.Qa6 Rcc7 31.Nc7 Bc7 32.Qc8 Kh7+-) 30...Rcc7 31.Qb6 Nh7 (31...Kh7 32.Bb5 Re7+-) 32.Qb8 Nf8 33.Ra1 Rc2 34.Ra8 Rb2 (34...Rd8 35.Qd8 Kh8 36.Qf8 Kh7 37.Qg8) 35.Qf8 (35.Qf8 Kh7 36.Qg8) 1–0. DEFFM – amplitude, freechess.org, 2018.

5.Nf3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.c4 cb5 10.cb5 Be7 11.Bd3 0-0 12.0-0 Qb6 Attacking the isolated pawn on b5 13.Nc3 d5 14.Ne5 Bb4 (14...Rc8 15.Na4 Qa5 16.Bc3=) 15.Ng4+= Ng4 (15...Ne8 16.Qb1 Bd6 17.f4+=) 16.Qg4 f6?? (better 16...Bc3 17.Qh4 h6 18.Bc3 f6+- (18...Bb5? 19.Rb1+-)) 17.Qb4+- Rc8 18.Na4 Qd8 19.Bc3 (19.Qd4 Be8+-) 19...Be8 (19...e5 20.Be2+-) 20.Qb1 f5 (20...h6 21.Rc1+-) 21.Qb2 Qe7 22.Nb6 Rc3 (22...Rd8+-) 23.Qc3 Qd6 (23...Nd7 24.Nd7 Qd7 25.Rc1+-) 24.Qc8 Nd7 (24...Kf8 25.Qb7 Nd7 26.Nd7 Bd7+-) 25.Qe8 (25.Qe8 Nf8 26.Nc8+-) 1–0. DEFFM – GuestYFTR, freechess.org, 2018.

5.Nf3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.c4 Be7 10.Nc3 0-0 11.Bd3 cb5 12.cb5 Qa5 13.0-0 Nd5? (better 13...Rc8=) 14.Nd5+/- ed5 15.Qb3 Be6 16.Nd4 Nd7 (16...Qd2? 17.Bf5 Rc8 18.Ne6+-) 17.Ne6 (17.Qb1!? h6 18.Bh7 Kh8 19.Ne6 fe6 20.Bg7 Kg7 21.Qg6 Kh8 22.Qh6+-) 17...fe6+= 18.Bc3 Nc5? (better 18...Qc7!?+=) 19.Qc2 (19.Qc2 Qa4 20.Bh7 Kh8 21.Bg7 Kg7 22.Qg6 Kh8 23.d4+-; 19.Ba5?! Nb3 20.Bb4 Rc8=) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nf3 c6 6.a4 cb5 7.ab5 Be7 8.Be2 (8.c4 0-0+-) 8...0-0 9.0-0 Qe8 (9...e5!?+=) 10.c4+- d5 (10...h6 11.d4+-) 11.Qb3 (11.Nc3 Bc8+-) 11...dc4+- 12.Bc4 h6 (12...a5 13.Nc3+-) 13.d4 (13.Nc3 Bc8+-) 13...Bc8 (13...a5 14.Nc3+-) 14.Nbd2 (14.Nc3 Nbd7+-) 14...b6 (better 14...a5!?+-) 15.d5+- e5 (15...Kh8 16.e4 ed5 17.Bd5+-) 16.Ne5 Bd6 (16...Nbd7 17.Nc6 Nc5 18.Qc2+-) 17.Nc6 Bb7 (17...Nc6 18.bc6 Qe7 19.Rfe1+-) 18.Bf6 gf6 19.Qd3 Be5 20.Ra4 (better 20.Ne5 Qe5 21.f4 Qd6+-) 20...Qd7 (20...Nd7 21.Nb3 Kh8 22.d6+-) 21.Bb3 (better 21.f4 Bc7 22.Ne4+-) 21...Qd6 (21...Nc6 22.Bc2 f5 23.bc6 Bc6 24.dc6 Qd3 25.Bd3 Rfd8+-) 22.Rg4 Kh8 23.Bc2 Bh2 (23...f5 24.Qf5 Qg6 25.Rg6 Rd8 26.Rg3 Bg3 27.Qh7) 24.Kh1 f5 25.Qf5 (25.Qf5 Qg6 26.Rg6 fg6 27.Qf8 Kh7 28.Ne7 Bd5 29.Bg6) 1–0. DEFFM – GuestWJDV, freechess.org, 2019.

5.Nf3 e5 6.Be2 (6.Nc3 e4 7.Ng5 Bg4+=) 6...h6 (6...a6 7.a4=) 7.0-0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Be7 (10...c6 11.d4 e4 12.Nfd2+=) 11.c4 (11.d4 e4 12.Nfd2 c6+=) 11...0-0 12.d4 e4 (12...ed4 13.Bd4 Bf5 14.Bd3+=) 13.Nfd2 c6 14.Nc3 d5 (14...Bf5 15.Bb2+-) 15.cd5 (15.Qb3!? Be6 16.Bb2+-) 15...cd5+= 16.Bb2 Bb4 (16...Be6 17.Qa4=) 17.Qb3+= Ba5 18.Ra1 b6 (18...Be6 19.Qa4 Bc7 20.Qa7+=) 19.Ra5 ba5 20.Nd5 Be6 21.Nf6 Qf6 22.Qa4 Qd8 (22...Qf5!?+-) 23.Ne4+- Bd5 24.Ng3 (24.Nc5 Nd7 25.e4 Re8+-) 24...Nd7 (24...Re8 25.Qa3+-) 25.e4 Ba8 (25...Nb6 26.Qc2 Bb7 27.d5+-) 26.Bc3 (26.d5 Re8+-) 26...Re8 (26...Qc7 27.Qa5 Rc8 28.Qc7 Rc7 29.Be1+-) 27.d5 Nf6 (27...Bb7 28.Bd4+-) 28.Bd3 (28.b6 Bb7+-) 28...Qc7 29.Qa5 Qa5 30.Ba5 Ng4 (30...Bb7 31.Bc7+-) 31.Nf5 Ne5 32.Bf1 Nd7 (32...g6 33.Nd6 (33.Nh6?! Kg7+-) 33...Re7 34.f4+-) 33.Nd6 Rb8 (33...Rf8 34.f3 g6 35.g4+-) 34.Bc7 Rf8 35.b6 Nc5 36.f3 f6 (36...g6 37.Bc4+-) 37.Bb5 g6 38.Ne8 Kf7 39.Bd6 Re8 40.Be8 Ke8 41.Bc5 Kd7 (41...Kd8 42.Kf2 Bb7 43.Ke3+-) 42.Kf2 g5 (42...Bb7 43.Ke3 g5 44.Kd4+-) 43.Ke3 Bb7 44.Kd4 h5 (44...Ba6 45.Bf8 Bb7 46.Bg7+-) 45.e5 White prepares d6 45...fe5 46.Ke5 g4 (46...Ba6 47.Be3+-) 47.f4 h4 (47...Ke8 48.f5 Bc8+-) 48.f5 Ke8 49.d6 Bg2 50.Ke6 Bc6 (50...Bd5 51.Kd5 Kf7 52.d7 Kf6 53.d8Q Kf5 54.b7 g3 55.b8Q gh2 56.Qe5 Kg6 57.Qg8 Kh6 58.Be3) 51.b7! Bb7 (51...Bb7 52.d7 Mate attack) 52.d7 Kd8 53.Bb6 1–0. DEFFM – BobbyMalewa, freechess.org, 2020.

5.c4 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Nc5 9.d4 Nce4 (9...Ncd7!?+=) 10.f3+/- Ng5 (better 10...d5!? 11.fe4 Ne4+/-) 11.h4+- 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.c4 Qe7 6.Nf3 e5 7.d3 g6 (7...a6 8.Be2=) 8.Be2 Bg7 9.0-0 0-0 10.Nc3 Re8 11.Nd2 (11.d4 a6=) 11...h5 (11...a6 12.ba6 Ra6 13.d4=) 12.Rc1 (12.Bf3 a6+=) 12...Nc5 (12...a6 13.e4=) 13.Nb3 (13.d4 ed4 14.ed4 Ne6=) 13...Bg4 (13...Nb3 14.Qb3 h4 15.h3=) 14.Nc5+= White gets the initiative 14...dc5 15.Bg4 hg4 16.Ne4 Rad8 17.Nf6 Bf6 (17...Qf6 18.Qg4 Rd3 19.Qe4+=) 18.Qg4+/– Rd3 19.Qe4 Qd7 (19...Rd2 20.Bc3 Ra2 21.Qb7+/–) 20.Qb7 Rd2 (20...c6 21.Qd7 Rd7 22.bc6+/–) 21.Bc3 (21.Rb1 Qe6+/–) 21...Ra2 22.Qf3 (22.Ra1 Ra1 23.Ra1 Qd3+=) 22...Kg7 (22...Qe6 23.e4+/–) 23.Rfd1 Qe6 24.Rd5 a6 (24...e4 25.Bf6 Qf6 26.Qf6 Kf6 27.Rc5+/–) 25.Rc5 ab5 (25...Qe7 26.Rc6+-) 26.cb5+- Qb3 27.Rc6 (27.Rd1 Re6 28.e4 Rd6+-) 27...Re6 (27...Bd8 28.Qh3 Qb5 29.f4+/–) 28.Re6 Qe6 29.g3 Qc4? (better is 29...Qb3!? 30.Qc6 Qa3+=) 30.Qf6!+- Kf6 Decoy theme: f6 31.Be5! Discovered attack 31...Ke5 The mate threat is Qxc1 32.Rc4 Ra7 (32...Kd6 33.Rc6 Kd7 34.e4+-) 33.h4 (33.e4 Ra5+-) 33...Rb7 (33...Kd5 34.Rc2+-) 34.Rc5 Kd6 35.Rg5 Ke6 (35...c5 36.bc6 Rc7 37.g4+-) 36.Kg2 (36.g4 Rb8+-) 36...f6 (36...Rb6 37.g4+-) 37.Rc5 Kd6 38.Rc6 Ke7 39.Kf3 Rb5 40.Rc7 Ke6 (40...Kf8 41.e4+-) 41.g4 (41.Rg7 g5+-) 41...Rb4?! (41...f5+-) 42.Rg7 (42.Rg7 Ra4 43.Rg6+-) 1–0. Bulcourf,Carlos (2210) – Campos,Jose Felix, Buenos Aires FMDA, 1992.

5.c4 Be7 6.d4+=.

5.d4 b6 6.Nf3 Be7 7.Bd3 d5 8.0-0 Nf8 (8...a6!?=) 9.c4+- Ng6 10.cd5 Nd5 11.e4 Nf6 12.Ne5 Bd7 (12...Bb7!? 13.Nc6 Bc6 14.bc6 0-0+-) 13.Nd2 0-0 14.Ndf3 Nf4 15.Nd7 Qd7 16.Ne5 Qd8 (16...Qd6 17.a4+-) 17.Bc4 Ne4 (better 17...Ng6 18.Nc6 Qd7+-) 18.Qf3 Nd2 19.Qf4 Nf1 (19...Bg5 20.Qg3+-) 20.Rf1 (worse 20.Bf1 Bd6 21.Bd3 g6+-; worse 20.Kf1 Bf6+-) 20...Bf6 21.Nc6 Qd7 22.Qe4 g6 23.Ba3 Rfe8 24.Qf3 Bg7 (24...Kg7 25.Bb4+-) 25.Rd1 a5 (25...h5 26.Ne7! Re7 27.Qa8 Re8 28.Qf3+-) 26.ba6 e5 (26...Bf6+-) 27.de5 Qe6 28.Be6 Re6 (28...fe6 29.Rd7 Kh8 30.Rg7 Rf8 31.Bf8 Re8 32.Qf7 Rf8 33.Qf8) 29.Ne7 Kh8 (29...Re7 30.Qa8 Bf8 31.Be7 h5 32.Qf8 Kh7 33.Bf6 c5 34.Qg7) 30.Qa8 Bf8 31.Qf8 1–0. DEFFM – GuestPTWK, freechess.org, 2019.

5.Nf3 d5=.

5.Be2=.

5.Nf3 Be7 6.Be2=.

5.Nf3 h6 6.h3 Nbd7 7.Be2 g5 (7...Nb6 8.a4=) 8.c4 Bg7 (8...a6 9.ba6 ba6 10.Nc3+=) 9.d4 e4 10.Nfd2 Qe7 11.Nc3 c6 12.a4 0-0 13.Qc2 e4 seems the pivot of the position 13...Re8 14.0-0 Nf8 (14...c5 15.d5+=) 15.bc6 (15.a5 Bf5+/–) 15...bc6+= 16.d5 c5 17.Qd1 (17.Rab1 Rb8+=) 17...a6 18.Re1 Bd7 19.f3 (19.Rb1!?+=) 19...Rab8 20.Rb1 ef3 21.Bf3 Qd8 (21...Ng6 22.Qe2+=) 22.e4 (22.Ba1 Qe7=) 22...Ng6 23.Ne2 (23.Rf1 Nh7 24.Ba1 Rb1 25.Ndb1 Bd4 26.Kh2 Ne5–/+) 23...Ne5 24.Ng3 (24.Be5!? Rb1 25.Qb1 Re5 26.Nc3+=) 24...Nd3–/+ 25.Bf6 Bf6 26.Rb8 Qb8 27.Re3? (better is 27.Rf1!? Qb4 28.Qc2–/+) 27...Bd4–+ (27...Bd4 28.Qe2 Nf4–+) 0–1. GuestTRWH – Guesthijk, freechess.org, 2017.

5.c4 Bg7 6.a4 (6.d4 0-0=) 6...b6 (6...0-0 7.d4=) 7.Qf3 d5 8.cd5 (8.d4 a6=) 8...Bb7 (8...ed5 9.Bf6 Bf6 10.d4=) 9.Nc3 (9.Bf6 Bf6 10.Nc3 a6+=) 9...0-0 (9...Nd5 10.a5 ba5 11.Ra5=) 10.Qd1 (10.d4 Nd5 11.Nd5 ed5=) 10...ed5 (10...Nd5 11.Nf3+=) 11.Nf3 (11.d4 c5=) 11...Nbd7 (11...c5 12.d4=) 12.d4 Re8 13.Be2 (13.Bd3 c5+=) 13...Ne4 (13...a6 14.0-0+=) 14.0-0 Ndf6 (14...c5 15.bc6 Bc6 16.Qb3+=) 15.Rc1 (15.Ne4 Ne4 16.Rc1 Qd6+=) 15...Rc8 (15...a6 16.Qc2+=) 16.Ne5 (16.Ne4 Ne4 17.Ne5 Re6+=) 16...Nc3 17.Rc3 (17.Bc3 Qd6+=) 17...Ne4 1–0. GuestPRTD – GuestTBHF, freechess.org, 2016.

5.Nf3 Bg7 6.c4 0-0 7.Be2 e5 8.0-0 Nh5 (8...a6 9.d4=) 9.d4+= f5 (better 9...Nd7!?+=) 10.de5+- Be6 (10...Nd7!?+-) 11.Nd4+- Qe7 (11...Bc8 12.ed6 (worse 12.Bh5 de5 13.Bf3 ed4+-) 12...Nf6 13.dc7 Qc7 14.Nc3+-) 12.Bh5 gh5 13.ed6 Qd6?! (13...cd6 14.Nd2 Be5+-) 14.Ba3 (14.Qh5?! Bc4 15.Rc1 Bf7 16.Qf5 Bg6+-; 14.Ne6?! Bb2 15.Qd6 cd6 16.Nf8 Kf8+-) 14...c5 (14...Qd7 15.Bf8 Kf8+-) 15.bc6 Qc6 (15...Qe5 16.cb7 Nc6 17.Qf3 Nd4 18.ed4+-) 16.Nc6 Ba1 (16...Nc6 17.Bf8 Ba1 18.Bh6+-) 17.Nd8 Bc4 18.Bf8 Kf8 19.Qh5 (19.Qd6 Ke8 20.Rd1 Na6+-) 19...Nc6 (19...Nd7 20.Qf5 Ke8 21.Rc1 Rd8 22.Rc4+-) 20.Qf5 Ke8 21.Nc6 bc6 22.Qe4 Kf8 23.Qc4 (23.Qc4 Re8 24.Qc6+-) 1–0. GuestWHFK – GuestDMXN, freechess.org, 2018.

5.c4 c5 (5...a6 6.Nc3+=) 6.e3 (6.Nc3 d5=) 6...0-0 (6...e5 7.Nc3=) 7.Be2 b6 (7...a6 8.ba6 Na6 9.0-0=) 8.0-0 Bb7 9.a4 (9.Nc3 a6=) 9...Nbd7 10.Nc3 Ne5 (10...a6 11.d3=) 11.Ne5 (11.d3 a6=) 11...de5 12.d3 g6 (12...a6 13.ba6 Ra6 14.Nb5=) 13.a5 ba5 14.Qa4 Rc8 (14...a6!?=) 15.Qa5+/– Ra8 16.Qd8 Rfd8 17.Ba3 (17.Na4 Nd7+/–) 17...a6+= 18.b6 The passed pawn on b6 will quickly become a dangerous weapon (18.Rfb1 ab5 19.cb5 Kf8+=) 18...Bc6 (18...Nd7 19.Rfb1+=) 19.Rfb1+/– Rdb8 20.Ra2 (20.Bd1 Rb7+=) 20...Bd8? (20...Rb7 21.Rab2=) 21.Rab2 White prepares the advance b7 (21.Bc5 Nd7 22.d4 ed4 23.ed4 a5+/– (worse is 23...Bb6 24.Bb6 Rb6 25.Rb6 Nb6 26.c5+/–)) 21...Nd7 (21...Rb7 22.Bc5 Nd7 23.Bd6 Rb6 24.Rb6 Bb6 25.Be5+/–) 22.b7 Ra7 23.Bf3 Bf3 24.gf3 Ba5? (better is 24...Kf8+=) 25.Na4+- Bb4 26.Bb4 cb4 27.Rb4 The passed pawn on c4 quickly leads to threats 27...e4? (better is 27...Kf8+-) 28.fe4 Ne5 (28...Kf8 29.d4 Ke7 30.c5+-) 29.Rb6 (better is 29.Nc5!? Nc6 30.Rb6 Nd8+-) 29...Nd3 30.c5 Ne5 31.f4 Nd7 (31...Nc4 32.c6 Nb6 33.Rb6 Kg7+-) 32.R6b3 f5 (32...Nf6 33.c6 Ne8 34.Nc5+-) 33.c6 (33.c6 Kf7 34.cd7+-) 1–0. Bonetti,Shane – LIPATTI, ICC, 2002.

5.e3 0-0 6.a4 Nfd7 7.Be2 Bf6 8.Bf6 Nf6 9.d4 Nfd7 (9...Qe7 10.0-0=) 10.c4 Re8 11.Nc3 Nf8 12.0-0 Nbd7 13.e4 Nf6 (13...e5!?=) 14.e5+/- N6d7 15.ed6 cd6 16.Qd2 Nf6 17.Rac1 b6 18.Rfd1 Bb7 19.Qg5 Rc8 20.h4 (20.Qe3 Bf3 21.Qf3 d5=) 20...d5 (20...Bf3!? 21.Bf3 Rc4-/+) 21.cd5 Nd5 22.Qd8 Red8 23.Ne4 (better 23.Nd5!? Bd5 24.Ne5=) 23...Nf4-/+ 24.Ng3 Ne2 (24...Rc1 25.Rc1 Bf3 26.Bf3 Rd4 27.Ra1-/+) 25.Ne2=+ Bf3 26.gf3 Nd7 (26...Ng6 27.h5 Ne7 28.Kg2=+) 27.Rc6 Nb8 28.Rc3 Rc3 29.Nc3 Kf8 30.Ne4 (30.f4 Nd7=+) 30...Nd7 31.Kf1 (31.Rc1 e5 32.d5 f5=+) 31...Nf6 (31...Ne5 32.Kg2-/+) 32.Ke2 (32.Nf6 gf6 33.Ke2 Ke7=+) 32...Nd5-/+ 33.Rc1 (33.Kd3 Rc8-/+) 33...h6 (33...Nf4 34.Ke3 Ng2 35.Ke2 Nh4 36.Rc7-+) 34.a5 (34.h5 Nf4 35.Ke3 Ng2 36.Kd3 e5-/+) 34...ba5-+ 35.Ra1 a4! 36.Nc5 (36.Ra4 f5 Combination) 36...Nc3-+ 37.Kd3 Nb5 38.Ra4 e5 39.Kc4 (39.d5 Ke8-/+) 39...Nd4 40.Ra7 Rc8 (40...Nf3!? 41.h5-+) 41.Kd5 Nb5 (41...Nc6!? 42.Nd7 Ke7 43.Rb7-+) 42.Rb7 (42.Ra5 Nc3 43.Ke5 Re8 44.Kd4 Ne2 45.Kd5 Nf4 46.Kd4 Ng6=+) 42...Nc3-/+ 43.Kd6 Kg8 44.Nd7 Rd8 (44...f6!?-/+) 45.Ke5 (45.Ke7 Ra8 46.Ne5 Nd5 47.Kd6 Nf6=) 45...Na4 (45...Nd1 46.Kd6=+) 46.Rc7 (better 46.f4=) 46...Nb6?? (better 46...Nb2=+) 47.Nb6+- f6 48.Kf4 Kh7 49.Nd7 (49.h5 Rd1+-) 49...Ra8 (49...Kg6 50.Kg3+-) 50.Nf6 Kg6 51.Ne4 Kh5 (51...Rf8 52.Ke3+-) 52.Rc5 (better 52.Rg7 Kh4 53.Rg1 Rf8 54.Ke3 Kh3+-) 52...Kh4 53.Re5 (53.Rc7 Rg8+-) 53...Kh3 (53...Ra6+-) 54.Nf6?? (better 54.Re7!? Rg8+-) 54...Kg2?? (54...Rf8 55.Re6 gf6=) 55.Rh5?? (55.Ng4 g5 56.Kf5 h5 57.Kg5 hg4 58.fg4 Kf2+-) 55...Kf1?? (55...Rf8 56.Ke3 Rf6 57.f4=+) 56.Rh3?? (56.Ne4 Kg2+-) 56...Ke1?? (better 56...Rf8!?=+) 57.Rh2?? (57.Ne4 Kf1+-) 57...Kd2?? (better 57...gf6 58.Rh6 Ra6+=) 58.Rh1?? (58.Ne4 Kd3+-) 58...Kc2?? (better 58...Rf8=+) 59.Ne4 Kb2 (59...Ra7+-) 60.Nc3 (better 60.Kf5+-) 60...Kb3?? (better 60...Kc3 61.Ke4 Kd2=+) 61.Re1 (61.Re1 Kc3 62.Re7=) 1-0. inSecOP (2515) - zsolti_83 (2545), Rated Bullet game, lichess.org, 2021.

5.e3 0-0 6.Be2 b6 (6...a6 7.c4=) 7.0-0 a6 8.a4 ab5 9.ab5 Bb7 (9...Ra1 10.Ba1 Bb7 11.Bb2=) 10.Ra8+= Ba8 11.c4 d5 (11...Nbd7 12.Qc2+=) 12.d4 Nbd7 13.Nc3 (13.Qc2 Ne4+=) 13...dc4 14.Bc4 Ne4 15.Qc2 (15.Bd3 Nc3 16.Bc3 c5+=) 15...Ndf6 (15...Nc3 16.Bc3 Bf3 17.gf3=) 16.Ne5+- Nd6 (16...Nc3 17.Bc3 Be4 18.Qb3+-) 17.Bd3 Bb7 18.Ra1 Nc8 (18...g6 19.e4+-) 19.Ne2 (19.Nc6 Bc6 20.bc6 Bb4+-) 19...Bd6 20.e4 (better 20.Nf4+-) 20...Qe7? (better 20...Be5!? 21.de5 Nd7+-) 21.Nf3+- Rd8 (21...Bb4 22.e5 Nd5 23.Bh7 Kh8 24.Be4+-) 22.e5 Bf3 23.gf3 (23.ef6 Qf6 24.gf3 g6+-) 23...g6 (23...Nd5 24.ed6 Nd6 25.Bh7 Kf8 26.Be4 Nb5 27.Bc1+-) 24.Nc3 (24.ed6 Nd6 25.Nf4 Nfe8+-) 24...Nh5 25.ed6 Rd6 (25...Nd6 26.Ne2+-) 26.Ne4 Rd8 27.Qc1 f5 (27...Nd6 28.Ra7 Ne4 29.Be4+-) 28.Ng5 f4 (28...Nf6 29.Qe3 Nd6 30.Ne6+-) 29.h4 (better 29.Ne6 Qe6 30.Bc4+-) 29...h6 (29...Ng7+-) 30.Ne6! Rd6 (30...Qe6 31.Qc4 Double attack (31.Qc4 Decoy)) 31.Ra8 Rd8 (31...Qd7 32.Bc4 c5 33.Nc5 Qe6 34.Rc8 Kh7 35.Ne6 Rd5 36.Bd5 Ng7 37.Qc7 g5 38.Qg7) 32.Nd8 Qd8 33.Qc6 (33.Qc6 Nf6 34.Rc8 Qc8 35.Qf6 Qg4 36.fg4 g5 37.d5 gh4 38.Qg7) 1–0. DEFFM (2330) – nyabuto (1910), rated rapid game, lichess.org, 2020.

5.e3 a6 6.c4=.

5.e3 e5+=.

4.Ba3 Qd8 5.Bf8 Rf8 6.e3 Qe7 7.Nf3 Qb4 8.Bd3 Ng4 (8...d6=) 9.Bh7 (9.a3 Qc5+=) 9...Qb5 (better 9...g6!?=+) 10.Nc3+= Qa6 11.Bd3 Qd6 12.Nb5 Qc6 (12...Qc5 13.Rb1+=) 13.Nfd4 Nf2?? (better 13...Qg2 14.Qf3 Qf3 15.Nf3 Na6+=) 14.Kf2 (better 14.Nc6 dc6 15.Nc7 Kd8 16.Kf2 Kc7 17.Qg4+-) 14...Qc5 15.Rf1 a6 16.Nb3 (16.Nc3 Nc6 17.Ne4 Qd5+-) 16...Qc6 (better 16...Qe5 17.N5d4 Qh2+-) 17.N3d4?? (17.Nc3 d5+-) 17...Qc5 18.Nc3 Rh8 19.Ne4 (19.Qg4 Qe5+-) 19...Qd5 (19...Qf8 20.Kg1+-) 20.Nf3 (better 20.Qg4!? Kf8+-) 20...f5 21.Neg5 f4? (21...Nc6+-) 22.ef4 Qd4 (22...Rh6+-) 23.Nd4 (23.Nd4 Rh2 24.Nh3+-) 1–0. aravind555 – Vi, lichess.org, 2018.

4.a4 Qc5 5.e3 Be7 6.Ba3 Qe5 (6...Qh5 7.Be2 Qg6 8.Be7 Ke7 9.Nf3+-) 7.d4+- Qf5 (7...Qh5 8.Be2 Qg6 9.Be7 Ke7 10.Nf3+-) 8.Be7 Ke7 9.Nf3 (9.Bd3 Qh5 10.Ne2 Re8+-) 9...Re8 10.Bd3 Qh5 11.Nc3 Kf8 12.0-0 (12.h3 d6+-) 12...Kg8 (12...d6 13.Qd2+-) 13.Ne2 (13.Qb1 c5+-) 13...d5 (13...d6!?+-) 14.Qd2+- b6 (14...Ne4 15.Be4 de4 16.Ng3+-) 15.a5 (15.Qc3 a5 16.Qc7 Nbd7+-) 15...Nbd7 (better 15...Ne4 16.Qc1 ba5+-) 16.Ng3 Qh6 17.Qc3 1–0. DEFFM – GuestHMBX, freechess.org, 2020.

4.c4 Qc5 5.e3= Qf5 (5...d5 6.cd5 Qd5 7.Bf6 gf6 8.Nc3+=) 6.Nf3 b6 (6...Bc5 7.d4 Bb4 8.Bc3 Bc3 9.Nc3+=) 7.Nd4+= Qe5 8.Be2 Bd6 (better is 8...Bb7 9.Bf3 Bf3 10.Qf3 Qe4+=) 9.f4 Qe4 (9...Qc5 10.Ba3 Qa3 11.Na3 Ba3+-) 10.Bf3 Qg6 (10...Qd3 11.Ba8 Qc4 12.Na3 Ba3 13.Ba3+-) 11.Ba8 0-0 12.Bf3 (12.0-0 e5 13.fe5 Be5+-) 12...c5 13.bc6 dc6 14.Nc6 Nc6 15.Bc6 Ba6 (15...Bd7 16.Bd7 Qg2 17.Rf1 Nd7 18.Qa4+-) 16.Na3 (16.d3 Rc8 17.Bf3 b5+-) 16...Rc8 17.Qa4 Qd3 (17...Bb4 18.Bf3 Ba5 19.Bc3+-) 18.Qa6 Rc6 19.Qa7 Ne4 (19...Rc8 20.Qa6 Rb8 21.Bf6 Ba3 22.Bc3+-) 20.Rd1 (20.Qa8!? Bf8 21.Rd1 Rd6+-) 20...Rc8 21.Qa4 (21.Qb7 Rb8 22.Qd7 Ra8+-) 21...Bc5 (21...Ba3 22.Ba3 h6 23.Qb3 Qc4 24.d3 Qb3 25.ab3+-) 22.Qc2 Rd8 23.Qd3 Rd3 24.Nb5 (24.Nb1 f6+-) 24...Bb4 25.Bc3 Bc3 26.Nc3 (26.dc3 Rd1 27.Kd1 Nf2 28.Ke2 Nh1+-) 26...Nc3 27.dc3 Re3 (27...Rd1 28.Kd1 f6+-) 28.Kf2 Rc3 29.Rd8 1–0. Dessing,Bastiaan – Springelkamp,Henriet, Hengelo U14 open, 2003.

4.c4 d6 5.d4=+.

4.e3 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 cb5 9.cb5 Nd5 (9...d5 10.Nf3=) 10.Nf3+= f6 11.Be2 g5? (better is 11...b6+=) 12.Ng5!+- fg5? (12...d6 13.Bc4 Rg8 14.Qh5 Kd8 15.Nh7 Rh8 16.Bd5 Rh7+-) 13.Bh8 Qb4 (13...b6 14.Bf3 Bb7 15.Bd4+-) 14.Qc2 Kd8 15.0-0 (better is 15.Nc3 Nc7+-) 15...Bd6 (15...b6+-) 16.Rc1 Bc7 (16...Qc5 17.Qc5 Bc5 18.Rc5 d6+-) 17.Bf6! Nf6 18.Qc7 Ke7 19.Qb8 Ne4 20.Qc8 Nd2 (20...Qb2 21.Rf1 Nd6 22.Qg8+-) 21.Rd1 Nb1 22.Rd7 Kf6 23.Qh8 Kg6 24.Bd3 Kh6 (24...Qe4 25.g4 Qd3 26.Qg7) 25.Rh7 (25.Qh7) 1–0. DEFFM – GuestWPJP, freechess.org, 2018.

4.e3 d6 5.Nf3=.

4.Nf3 d5=.

5.Ba3 Qe4 6.Nc3 Qe5 (6...Qg6 7.Bf8 Rf8 8.Nf3=) 7.Nf3 Qh5 8.Bf8 Kf8 9.d4 d6 10.Be2 Qg4 11.0-0 a6 12.a4 g6 13.Qd2 a5 (13...Kg7 14.h3 Qh5 15.e4+/-) 14.e4! Ne4 (better 14...Kg7!? 15.h3 Qh5+-) 15.Qh6+- Kg8 16.h3 Qf5 (16...Nc3 17.hg4 Ne2 18.Kh2+-) 17.g4 Qf6 18.Ne4 Qe7 19.c4 Nd7 20.Rfc1 White intends c5 20...f5 (20...b6 21.Bf1+-) 21.gf5 ef5 22.c5 Qe4 23.Ng5 (better 23.Re1 Nf8 24.Bc4 Be6 25.Re4 fe4 26.d5+-) 23...Qe8 (23...Qd4 24.Ne6 Qf6 25.Nc7 Nc5 26.Na8 Be6+-) 24.Bc4 d5 25.Bd5 Qf7 (25...Qe6 26.Be6) 26.Bf7 1-0. Mely (2855) - Otiko (1615), ChessWorld.net, 2011.

5.Be5 White gets strong initiative 5...Ne4 6.Nc3 (worse is 6.Bc7 Qb2 7.f3 Qa1 8.fe4 Qa2–/+) 6...Nd6 (6...d6 7.Rb1 Qc5 8.Ne4 Qe5 9.Bd3=) 7.Be2 a6 8.Rb1 (8.ba6 Na6 9.Nf3 f6=) 8...Qc5 (8...Qa5 9.Nf3+=) 9.Bd4 Qg5 (9...Qa3 10.b6 Nc6 11.Nf3+=) 10.Nf3 Qg2 11.Rg1 Qh3 12.Bg7 Rg8 (12...Bg7!? 13.Rg7 ab5 14.Bb5 b6+=) 13.Rg3+/– Qf5? (better is 13...Qh5 14.Bf8 Rf8+/–) 14.Nh4+- Qc5 (14...Bg7 15.Nf5 Nf5+-) 15.Bd4 Qa3 (15...Rg3 16.Bc5 Rg1 17.Bf1 Nb5 18.Nb5 ab5 19.Bf8 Kf8+-) 16.Rg8 Ke7 17.Rb3 Qa5 18.Bc5 ab5 19.Rb5 Qa6 20.Nf5! ef5 21.Nd5 Ke8 (21...Ke6 22.Nc7 Ke7 23.Na6 Ra6 24.Qa1 Nc6 25.Bd6 Kd6 26.Rf8 Kc7 27.Rf5 Ra4 28.R5f7 h5 29.Qg7 h4 30.Bg4 Rb4 31.Bd7 Kb6 32.Bc8 Kb5 33.Rb7 Ka4 34.Ra7 Na5 35.Bd7 Rb5 36.Qc3 h3 37.Qa5) 22.Qa1 f6 (22...Nc6 23.Rf8! Kf8 24.Qh8) 23.Bh5 Kd8 24.Qf6 1–0. Kern,Michael – Bell,Alexander, compuserve, 1997.

5.Bf6 gf6 6.Nc3 Bg7 7.a3 Qc5+=.

5.Bf6 gf6 6.Nc3 Bg7 7.Rb1 Qa5 8.Nge2 f5 9.d4 b6 10.g3 a6 11.Bg2 Ra7 12.ba6 Na6 13.0-0 Bb7 14.Bb7 Rb7 15.a4 e5 16.Rb5 ed4 17.Ra5 dc3 18.Ra6 1–0. Abdullaevich (1940) – chango828 (1925), lichess.org, 2020.

5.Bf6 gf6 6.Nc3 Bg7 7.Nf3 f5 8.Rb1 Qa3 (8...Qa5 9.Rb3=) 9.Rb3+= Qe7 10.a4 Qd6 (10...d5 11.d4+=) 11.d4 (11.a5 b6+=) 11...c6 (11...Qb6 12.Bd3+=) 12.Bd3 c5 13.0-0 cd4 1–0. GuestWJHS – GuestRNHQ, freechess.org, 2019.

5.Bf6 gf6 6.c4 Bg7 7.Nc3 f5 8.Rb1 Qa3 9.Rb3 Qa5 10.Qc2 Bc3 (10...d6 11.Nf3=) 11.Rc3 (worse is 11.dc3 d6=) 11...c6 12.Nf3 d5? (better is 12...Rg8+=) 13.cd5+- ed5 (13...a6 14.dc6 ab5 15.cb7 Bb7 16.Rc5+-) 14.Nd4 (14.bc6 bc6 15.Rc6 Be6+-) 14...a6? (better is 14...Bd7+-) 15.Be2?? (better is 15.bc6 b5 16.c7+-) 15...ab5+/– 16.0-0 (16.Nb5!? Qd8 17.0-0+/–) 16...Qa2= 17.Qd3 (17.Qc1 b4 18.Rb3 Rg8=) 17...Qb2 (17...b4 18.Rb3+=) 18.Rc2 (18.Nb5!? 0-0 19.Nd6+=) 18...Qa3= 19.Nb3 (19.Rc3 Qe7+=) 19...Na6 (19...Qe7 20.Nd4+=) 20.Qd4 (20.Qc3 Rf8+=) 20...Rg8 21.Ra1 Qb3 (better is 21...Qe7 22.d3 Be6+=) 22.Rb2+= Nb4?? (better is 22...Qb2! 23.Qb2 Be6+=) 23.Ra8+- Nc2 (23...Qb2 24.Qb2 Kd7+-) 24.Qe5 Kd7 25.Rb3 Ne1 26.Qf5 Kc7 27.Rc8! Rc8 28.Qf4 (28.Qf7 Kb6+-) 28...Kb6 29.Qd4 (29.Kf1 Ng2 30.Kg2 Rg8 31.Kf3 Rc8+-) 29...Kc7 30.Qc5 Rg8 31.g3 Ra8 32.Rb1 (better is 32.Rb5 Re8+-) 32...Ra2 33.Re1 (33.Rb5 Nf3 34.Bf3 h5 35.Qe7 Kc8 36.Rb7 Ra1 37.Kg2 Rg1 38.Kg1 h4 39.Qd7) 33...Rd2 34.Bb5 Rb2 35.Bd3 Rb1 36.Rb1 (36.Rb1 b5 37.Rb5 Kc8 38.Qc6 Kd8 39.Rb8 Ke7 40.Re8; 36.Qe7 Kb8 37.Qd8 Ka7 38.Rb1 b5 39.Qc7 Ka6 40.Ra1) 1–0. DEFFM – guerreirobrasil, freechess.org, 2017.

4.a3 a6 5.e3 ab5 6.Bb5 c6 7.Be2 d5 8.Nf3 b6 9.0-0 c5 10.d4 c4 11.Nc3 0-0 12.a4 Nc6 13.Nb5 (13.Ne5 Bb7=+) 13...Bd7=+ 14.Ne5 Ne5 15.de5 Ne4 16.Bd4 Bc5 (16...Ra5!?–/+) 17.f3= Bb5 18.ab5 Bd4 19.ed4 (better 19.Qd4!? Nc5 20.Ra8 Qa8 21.Ra1=) 19...Nc3–/+ 20.Qd2 Ne2 (20...Nb5 21.Rfb1 Qd7 22.Bf1–/+) 21.Qe2 Qd7 22.Rab1 Ra5 23.f4 g6 24.g4 White plans f5 24...Rb5 25.Rb5 Qb5 26.f5 ef5 27.gf5 Qd7 28.Qe3 Qe7 (28...Ra8 29.e6 fe6 30.fg6 hg6 31.Rf6=+) 29.Qh6 (29.f6!? Qe6 30.Qh6 Qg4 31.Kf2 Qd4 32.Kg3 Qe5 33.Kg2 Qe4 34.Kg3 Qe5 35.Kg2 Qe2 36.Kg3 Qe5=) 29...Ra8=+ 30.fg6 hg6 31.Qf4 Ra2 32.Rf2 (32.c3!?=+) 32...b5–/+ 33.Qf6? (better 33.Qg3–/+) 33...Qf6–+ 34.ef6 (34.ef6 b4 35.Re2–+; 34.Rf6 Rc2 35.Rb6 Rb2–+). BeepBeepImAJeep (2575) – snibben (1845), lichess.org, 2017.

4.Nc3 c5 5.e4= a6 6.Nf3 ab5 7.Nb5 Qb6 8.e5 Ng4 9.Nd6?? Bd6–+ 10.ed6 c4 11.Bd4+= Qd6 12.h3 Nc6 13.Bc3 Nge5? 14.Be2?? Nf3 15.Bf3 0-0–/+ 16.0-0 Nd4 17.Re1 Nf3 18.Qf3 Ra7 19.Re4 b5?? 20.Rg4 e5 21.Qg3 Re8?? 22.Rg7+- Kh8 23.Rf7 Qg6 24.Be5 Kg8 25.Rg7 (25.Rg7 Kf8 26.Qf3 Qf6 27.Qf6#) 1–0. mic (2195) – bvanderweerd (2125), net–chess.com, 2008.

4.Nc3 d5 5.e3 a6 6.Nf3 ab5 7.Bb5 Bd7 8.0-0 0-0 9.Qe2 c6 10.Bd3 Na6 11.Ba6 Ra6 12.Ne5 Bd6 13.f4 Qc7 14.Rf3 Be5 15.fe5=+ Ng4 16.Rh3 Nh6 17.Qh5 Rfa8 18.Rf1 Qb6 19.Rf6 Qb2 20.Rg3?? Kh8= 21.Rg7 Kg7 22.Qh6 Kg8 23.Qg5 Kf8 24.Qh6 Ke7 25.Rf7 Kd8 26.Qh7+/– Qc1 27.Kf2+- Kc8 28.Rd7 Qd2?? 29.Kf3 Rb6 30.Qe7 Kb8 31.Rd8 Ka7 32.Qa3 Ra6 33.Qc5 Rb6 34.Qa5 Ra6 35.Nb5! cb5 36.Ra8 Ka8 37.Qd2 Ra2 38.g4 Kb8 39.g5 Kc8 40.g6 Kd8 41.g7 (41.g7 Ra7 42.g8Q Kd7 43.Qc3 Ra8 44.Qf7 Kd8 45.Qcc7) 1–0. pierre – Cmixmax, chess.com, 2007.

4.c4 Bc5 5.e3 h6 (5...0-0 6.Nc3=) 6.Nf3 0-0 7.Be2 Be7 8.0-0 b6 (8...a6 9.a4+=) 9.a4 Bb7 10.d4 c6 11.Nbd2 d6 12.Qb3 Nbd7 13.Ra2 d5 14.Rfa1 Qc7 (14...Rc8 15.bc6 Bc6 16.Rc1+=) 15.a5 (15.bc6 Bc6 16.Rc1 Qd8+=) 15...c5 16.a6 (16.Qc2 Bd6+=) 16...Bc8 (16...dc4 17.Bc4 (worse is 17.Qc4 Bd5 18.Qc2 Ba2–/+) 17...Bd5 18.Rc1=) 17.cd5 (17.Rc1!?+/–) 17...ed5= 18.Rc1 c4 (better is 18...Bd6!?=) 19.Qc2+/– Nh7 (19...Re8!? 20.e4 Bb4+-) 20.e4 (20.Nc4 Ndf6 (worse is 20...dc4 21.Qe4 Nc5 22.dc5+-) 21.Nce5 Qc2 22.Rc2 Re8+-) 20...Ndf6 21.ed5 Nd5 22.Bc4 (22.Nc4?! Nb4 23.Qb3 Na2 24.Qa2 Be6+=) 22...Qd6?? (better is 22...Be6 23.Qb3 Qd8+-) 23.Ba3 Nb4 (23...Qd8 24.Bd5 Ba3 25.Ba8 (25.Ra3?! Qd5 26.Qc4 Nf6+/–) 25...Bc1 26.Qc1+-) 24.Qb3 (24.Qa4 Ng5 25.Rb2 Qf4 26.Ng5 Qg5 27.Bb4 Bh3+-) 24...Be6 (24...Na2 25.Bd6 Nc1 26.Qb4 Bd6 27.Qd6+-) 25.d5! Bd5 (25...Nd5 26.Bd6 Pinning (26.Bd6 Deflection); 25...Bd5 26.Bb4 Decoy) 26.Bb4 Bc4 (26...Qb4 27.Bd5 Qb3 28.Bb3+-) 27.Rc4 (27.Bd6?! Bb3 28.Nb3 Bd6+=) 27...Qe6 28.Be7 Qe7 29.Rac2 (29.Ra1 Rfe8+-) 29...Qe2 (29...Rad8+-) 30.Re4 (30.Re4 Qd1 31.Re1 Qe1 32.Ne1+-) 1–0. Nikolic,Jovane (1695) – Von Erlea,Simon Pablo, Championship da Primeira Categoria do E, 2012.

4.c4 Kf8 5.a4 d6 6.e3 Nbd7 7.Nc3 h5 8.Nf3 Rh6 9.Be2 c6 (9...h4 10.0-0=) 10.g3 (10.0-0 Kg8+=) 10...d5 11.d4 Kg8 12.h4 (12.0-0 dc4 13.Bc4 cb5 14.ab5 Qc7+=) 12...Nf8 (12...cb5 13.ab5 dc4 14.Bc4=) 13.c5 Ng6 14.Bd3 Qc7 15.Ne2 (15.bc6 bc6 16.Qc2 a5+=) 15...Ne4 16.Be4 de4 17.Nd2 f5 18.Nf4 Nf4 19.ef4 (better 19.gf4 Qa5 20.Qb3=) 19...Rf6 (19...Bd7 20.Qe2=+) 20.Nf1 (20.Qh5!? Bd7 21.Qe2+=) 20...Rf8 (20...Bd7 21.f3 ef3 22.Qb3=+) 21.Ne3 (21.bc6 b6=) 21...Rd8 22.Qc2 Bf6 23.0-0-0 (23.0-0!?=+) 23...cb5–/+ 24.ab5 Qa5 (24...b6!?–/+) 25.Qb3 White plans d5 25...Bd7 (25...Kh7=+) 26.d5 (better 26.Nf5 Qb5 27.Qb5 Bb5 28.Nd6=) 26...Bb2 27.Kb2 ed5 (27...Bb5 28.de6 Rd2 29.Rd2 Qd2 30.Ka1 Bc6 31.e7 Kh7=) 28.Rd5= Kh7 29.Rd4 (29.Ra1 Qc7 30.Nf5 Bb5 31.Nd6+-) 29...Be6!–/+ (29...Bb5 30.Ra1 Ba4 31.Raa4 Qc5 32.Qb4+-) 30.Qc3? (30.Qe6 Rd4) 30...Qb5–+ 31.Kc1 Rd4 32.Qd4 Rc8 33.Nc2 (33.Kd2 Rc7 34.Qa1–+) 33...Rc5 34.Rd1 Bb3 35.Rd2 Qa4 (35...Ba4 36.Qd6–+) 36.Qb2 (better 36.Qc5 Be6 37.Qe5+-) 36...Bc2 (36...Qc4!? 37.Qd4 Qd4 38.Rd4 Rc2 39.Kb1 Rf2 40.Rd7–+) 37.Rc2 Rc2 38.Qc2 Qc2 39.Kc2 g6 40.Kc3 Kg7 41.Kd4 Kf7 42.Kd5 Kf6 43.Kc5 a5 44.Kb5 b6 45.Kb6 (45.Kc4 a4 46.Kb4 b5–+) 45...Ke6 (better 45...a4 46.Kc5 a3 47.Kd4–+) 46.Ka5 (46.Kc5 a4 47.Kc4 a3–+) 46...Kd5 47.Kb4 (47.Kb4 Kd4 48.Kb5–+; 47.Kb5 Kd4 48.Kc6 e3 49.fe3 Ke3–+). BeepBeepImAJeep (2735) – bogdanb (2310), lichess.org, 2015.

4.Bd4 a6 5.e4 c5 6.bc6 Nc6 7.Bb2 0-0 8.e5 Nd5 9.c4 Nc7 10.Qg4 f5 11.Qg3 Nb4 12.Na3 b5 13.Nf3 Bb7 14.Be2 bc4 15.Bc4 Nbd5 16.0-0 Nb6 17.Rfc1 Nc4 18.Nc4= Bd5 19.Bd4 Nb5 20.Bb6 Qe8 21.Rab1?? Qh5 22.Be3? g5?? 23.Bg5 Bg5–+ 24.Qg5 Qg5 25.Ng5 Kg7?? 26.d3 h6 27.Nh3 Kh7 28.Nf4 Bc6 29.Nb6 Rae8? 30.f3 Rg8 31.Nh5 Kg6 32.Nf6 Nd4 33.Rc4 Ne2 34.Kf2 Nf4 35.Rf4 Ref8 36.Ng8 Rg8 37.Rfb4 a5 38.R4b2 a4 39.Nc4 h5 40.Nd6 h4 41.Ke3 Kh5 42.a3 Rg7 43.Ne8 Rg8 44.Nf6 Kg6 45.Ng8 1–0. NN – COMP, 2003.

4.e3 Kf8 5.Nf3+=. usingprogram (2035) – breberka37 (1715), kurnik, 2011.

4.e3 h6 5.a4 0-0 6.h3 d5 7.Nf3 c5 8.Be2 b6 9.0-0 Nbd7 10.a5 ba5 11.Bc3 a4 12.Ra4 Nb6 Black prepares c4 13.Ra2 Bb7 14.d3 Nh7 (14...a6!? 15.ba6 Ra6 16.Ra6 Ba6=) 15.Nbd2+- Bf6 16.d4 c4 (16...cd4 17.Nd4 e5 18.Nc6+=) 17.Qa1 Ng5 18.Ne5 (18.Rb1 Nf3 19.Nf3 Qc7+-) 18...Be5 (18...Nh3 19.Kh2 Ng5 20.Ra7+=) 19.de5+- Ne4? (better 19...Nh3 20.Kh2 Ng5+-) 20.Ne4+- de4 21.Ra7 Ra7 22.Qa7 Qd5?? (22...Nd5 23.Bd4 Qc7+-) 23.Qb6 Ra8 (23...Qd7+-) 24.Rd1 Ra6 25.ba6 (25.ba6 Kh7 26.ab7 Qd8 27.Qd8 Kg6 28.Qf8 f6 29.Rd7 Kf5 30.Rg7 h5 31.Qf6) 1–0. Ddgs – Poroli, internet, 2019.

4.Nf3 c5 5.c4 (5.e3 d5=) 5...0-0 6.Nc3 (6.e3 d5=) 6...d5 7.cd5 (7.e3 a6+=) 7...ed5 8.e3 Bg4 9.Be2 (9.Qc2!?+=) 9...d4–/+ 10.ed4 (better is 10.Na4 d3 11.Bf1–/+) 10...cd4–+ 11.Na4 (11.Ne5 dc3 12.Bc3 Be6–+) 11...d3 12.Bf1 (12.0-0 Re8–+) 12...Re8 13.Qb3 Bb4 (better is 13...Ba3! 14.Kd1 Bb2 15.Nb2–+) 14.Ne5 Nbd7 15.f4 Ne5 16.fe5 Ne4 17.Bd3 (17.Qb4 Qh4 18.g3 Ng3 19.Kf2 Nh1 20.Ke3 Qf2 21.Kd3 Red8 22.Kc2 Rac8 23.Kb3 Bd1 24.Rd1 Qf3 25.Nc3 Rc3 26.dc3 Qd1 27.Ka3 Qf1 28.Qe7–+) 17...Qh4 18.g3 Bd2 19.Kf1 Qh3 20.Kg1 Be3 0–1. Kappler,Jean_Marie – Hennig,Dirk, corr, 1971.

4.Nf3 h6 5.e3 (5.e4 d5 6.e5 Ne4=) 5...0-0 6.c4 (6.Be2 a6=) 6...c6 (6...d5 7.d4=) 7.a4 cb5 (7...d5 8.Nc3=) 8.ab5 a6 (8...d5 9.Bd4=) 9.Be2 (9.Bf6 Bf6 10.d4 d6=) 9...d6 (9...d5 10.0-0=) 10.d4 (10.0-0 Qc7+=) 10...Nh7 (10...b6 11.0-0+=) 11.0-0 Bf6 (11...Nf6 12.Qd3+=) 12.Qc2 (12.Nc3 Qc7+/–) 12...Re8 (12...Nd7 13.Nc3+/–) 13.Bd3 (13.Nbd2 Nd7+/–) 13...Ng5 14.Ng5 Bg5 15.f4 (15.Rd1 Qe7+/–) 15...Bf6 16.e4 (16.Nc3 Nd7+/–) 16...e5 (16...Nd7 17.e5 Be7 18.Nc3+=) 17.fe5+/– de5 18.d5 Nd7 (18...b6 19.Qf2+=) 19.c5 Qe7 (19...Qc7 20.c6 bc6 21.bc6+/– (worse is 21.ba6 Qb6 22.Qf2 Qf2 23.Kf2 Nc5+=)) 20.c6+- bc6 21.bc6 (21.Qc6?! Qc5 22.Rf2 Bd8+=; worse is 21.ba6 cd5 22.Nc3 Qc5 23.Qf2 Qf2 24.Rf2 d4+=) 21...Qc5 (21...Nf8 22.Ba3 Qd8 23.d6+-) 22.Kh1 Qc2 23.Bc2 (23.cd7 Bd7 24.Bc2 Reb8+-) 23...Nc5 (23...Nb6 24.Bc3+-) 24.d6+- Be6 25.c7 (25.Ra5 Reb8+/–) 25...Rac8 (better is 25...Rec8!?+/–) 26.Ba3 Nb7 (26...Nd7 27.Bd3 a5 28.Ba6+-) 27.Nc3 Nd6 (27...Be7 28.de7 Rc7 29.Ba4 Ree7 30.Be7 Re7 31.Nd5 Bd5 32.ed5+-) 28.Bd6 Be7 29.Be5 Bf6 (29...Bb4 30.Ba4 (30.Ra6?! Bc4 31.Rb6 Bc3 32.Bc3 Bf1=) 30...Re7 31.Rfc1+-) 30.Bf6 (30.Rf6!? gf6 31.Bd6 Kg7+-) 30...gf6 31.Ba4 Re7 32.Nd5 Bd5 33.ed5 Rcc7 (33...Rec7 34.Bc6 Ra7+-) 34.d6 1–0. GuestGRQF – GuestJMRK, freechess.org, 2018.

4.f4 d6 5.e3 c5 (5...Nbd7 6.Nf3= (6.Nc3 Nc5 7.Nf3 0-0 8.Be2 h6 9.0-0 Bd7 10.d4) 6...0-0 7.Nc3 Nc5 8.Be2 a6 9.a4 ab5 10.ab5; 5...0-0 6.Nf3 (6.Nc3 a6 7.Nf3 ab5 8.Bb5 Nc6 9.0-0 Bd7 10.Qe2) 6...a6 7.Nc3 ab5 8.Bb5 Nc6 9.0-0 Bd7 10.Qe2; 5...e5 6.fe5 (6.Nf3 e4 7.Nd4 c5 8.Nb3 0-0 9.Nc3 a6 10.a4) 6...de5 7.Be5 Nbd7 8.Bd4 0-0 9.Nc3 c6 10.bc6; 5...a6 6.Nf3 (6.Nc3 ab5 7.Bb5 Nc6 8.Nf3 Bd7 9.0-0 0-0 10.Qe2) 6...ab5 7.Bb5 c6 8.Be2 Qb6 9.Qc1 Na6 10.Nc3) 6.Nf3= (6.Nc3 a6 7.Nf3 ab5 8.Bb5 Nc6 9.0-0 0-0 10.a4; 6.Bd3 a6 7.Nf3 ab5 8.Bb5 Bd7 9.Nc3 Nc6 10.0-0) 6...Bd7 (6...a6 7.Be2= (7.Nc3 ab5 8.Nb5 Nc6 9.Bd3 d5 10.c4) 7...ab5 8.Bb5 Nc6 9.Nc3 0-0 10.0-0) 7.Be2 (7.Nc3 Qb6 8.a4 0-0 9.Be2 a6 10.0-0) 7...a6 8.a4 (8.Nc3 ab5 9.Nb5 Nc6 10.0-0) 8...ab5 (8...0-0 9.0-0= (9.Nc3 Nd5 10.0-0) 9...ab5 10.ab5) 9.ab5 Ra1 10.Ba1 0-0 11.0-0 Qb6 (11...d5 12.Nc3=) 12.c4 (12.Nc3 d5=) 12...Ne8 (12...d5 13.Nc3=) 13.d4 (13.Qc2 Nc7+=) 13...Bf6 (13...d5 14.cd5 ed5 15.dc5 Bc5 16.Bd4+=) 14.Na3 (14.Qd3 cd4 15.Bd4 Bd4 16.ed4 Nf6+/–) 14...cd4 (14...d5 15.Qd3+=) 15.ed4 (15.Bd4 Qc7+=) 15...Nc7 (15...Be7 16.Qc1+=) 16.Kh1 (16.Qd3 Re8+=) 16...Be7 (16...h6 17.Bd3+=) 17.Bb2 (17.Qd3 Re8+=) 17...Na8 (17...Rc8 18.Bd3+=) 18.Qc2 f5 (18...Qc7 19.Bd3 f5 20.Re1+=) 19.Qc3 (19.Ra1 Rc8+/–) 19...Bf6 20.Nc2 Rc8 21.Qb4 (21.Qe3 Qc7+=) 21...Bb5 22.c5 dc5 23.Qb5 Qb5 24.Bb5 Nc7 25.Na3 Nb5 26.Nb5 Nc6 (26...Rc6 27.Ba3 b6+/–) 27.h3 (better is 27.Rb1!? b6 28.dc5 bc5 29.Bf6 gf6 30.Nd6+-) 27...Rd8+= 28.g4 (28.Re1!?+=) 28...fg4 (28...cd4 29.g5 Be7 30.Nbd4 Nd4 31.Bd4+-; worse is 28...Nd4 29.Bd4 Bd4 30.Nc7 (worse is 30.Nfd4 cd4 31.Kg2 d3+=) 30...fg4 A) 31.Nd4?! cd4 (worse is 31...Rd4 32.Ne6 Rd6 33.Nc5+=) 32.hg4 Kf7+=; B) 31.hg4+/–) 29.hg4 g6 (29...Bd4 30.Nbd4 cd4 31.Rd1=) 30.Re1 (30.d5 Bb2 31.dc6 bc6+/–) 30...Nd4 (30...Bd4 31.Nbd4 cd4 32.Re6+=) 31.Nbd4 (31.Bd4 cd4 32.Re6 Bg7+/–) 31...cd4 (31...Bd4!? 32.Rd1 Bf6 33.Rd8 Bd8=) 32.Re6 (32.Re4+/–) 32...Kf7 (better is 32...Bg7!? 33.Re7 b5+-) 33.Rb6+- Rd7 34.Ne5 Be5 35.fe5 Rd5 36.e6 (36.Rb7?! Ke6+=) 36...Ke8 (36...Kf6 37.Ba3 (37.Rb7?! Ke6 38.Rb6 Kd7=) 37...Re5 38.e7 Kf7 39.g5+-) 37.Rb7 d3?? (37...Re5 38.Bd4 Re6+-) 38.Bf6 (38.Rh7?? d2 39.Rh8 Ke7 40.Ba3 Ke6–+) 38...Rd8 39.Re7 Kf8 40.Rh7 (40.Rh7 d2 41.Rh8) 1–0. Jacewicz,Grzegorz (2000) – Schulz,Peter (1840), remoteschach.de, 2010.

4.g3 c6 5.a4 0-0 6.Bg2 d5 7.d3 Qa5 8.Nd2 cb5 9.ab5 Qb5 10.Rb1 Qc5 11.Ngf3 Bd7 12.Bf6 Bf6 (12...gf6?! 13.Rb7 Rc8 14.c4=) 13.Rb7 Qc8 14.Qb1 Bc6 15.Rb3 Nd7 (better is 15...Ba4!?–+) 16.0-0 Ba4 17.Ra3 Bc6 18.c4 dc4 19.Nc4 Bd5 20.Nfd2 Bg2 21.Kg2 Qc7 22.Ne4 Be7 23.Ra4 (23.Ra6 Rfb8 24.Qa1 Nc5 25.Nc5 Bc5=) 23...Nf6 (better is 23...Qc6!? 24.Qa1 Nc5–+) 24.Nf6+= Bf6 25.Qa2 Rfc8 26.Rb1 Qc6 27.Kg1 Bd4 28.e3 Bf6 29.d4 Be7 30.Ne5 (30.Ra7 Bf6 31.Ra8 Ra8+/–) 30...Qc7 (30...Qe4 31.Qb3=) 31.Ra1 (better is 31.Rc4 Qd6 32.Rc8 Rc8 33.Qa7+/–) 31...f6?? (31...Qb7!?=) 32.Rc4 (32.Qe6 Kh8 33.Nf7 Kg8 34.Nh6 Kh8 35.Qg8 Rg8 36.Nf7) 32...Qb7 (32...Qd6 33.Rc8 Rc8 34.Nc4+/–) 33.Rc8 (better is 33.Rc7! Qd5 34.Qd5 (34.Re7?! Rc1 35.Rc1 Qa2+=) 34...ed5 35.Re7 fe5 36.Re5+- (36.Raa7?! Ra7 37.Ra7 ed4+=; 36.Rea7?! Ra7 37.Ra7 ed4+=)) 33...Qc8+= 34.Nd3 Kf7 35.Qb3 Qc7 (35...Rb8 36.Qa4 Rb7 37.Qd1+=) 36.Ra6 Qd7? (better is 36...Qc8 37.Qb5 g6+/–) 37.Nf4+- Bd6 38.Nd5?? (better is 38.Rd6 Qd6 39.Qb7 Qe7 40.Qa8+-) 38...Kf8?? (better is 38...Rb8!? 39.Qa2 ed5 40.Ra7 Bc7–/+) 39.Nc3 Ke7 40.Nb5?? (40.Ne4 Rb8 41.Qa2 Bb4 42.Re6 Kf8+/–) 40...Bb8?? (better is 40...Rb8 41.Rd6 Qd6–/+) 41.Qc4 h6 42.e4 g5 43.d5 ed5 44.Qc5 Kf7 45.Nd6 Bd6 46.Qd5 (46.Rd6?! Qb7 47.ed5 Qb1 48.Kg2 Qe4 49.f3 Qe2 50.Kg1 Qe7=) 46...Ke7 47.Qa8 Qb5?? (47...Bc5 48.Rc6 g4+/–) 48.Ra7 Ke6 (48...Qd7 49.Rd7 Kd7+-) 49.Qc8 Ke5 50.Qf5 Kd4 51.Qb5 (51.Qb5 Bc5 52.Ra4 Ke5 53.Qc5 Ke6 54.Qc7 g4 55.Ra6) 1–0. Jokmin,Alex – Vontina,Maria, RN–2010-0-00297, 2010.

4.g4 a6 5.g5=+ Nd5 (5...Ne4 6.d3 Nd6 7.ba6=+) 6.a4 (6.e4 Nf4=) 6...Bg5 7.Nf3 (7.Bg7 Rg8 8.Bb2 d6=+) 7...Bh6 8.Rg1 0-0 9.c4 Nb4 10.Qb3 a5 11.h4 g6 (11...d6 12.d4-/+) 12.Ng5 (12.h5 d6=+) 12...d6-/+ 13.Nc3 e5 14.e3 Bf5 15.e4 Be6 16.Be2 Nd7 17.0-0-0? (better 17.Ba3-/+) 17...Nc5-+ 18.Qa3 Ncd3 19.Kb1 Bc4 20.Nd5 (20.Rdf1-+) 20...Nb2 21.Kb2 (21.Bc4 Nc4 22.Qc3 Nd5 23.Qc4 Nb6-+) 21...Be2 22.Rde1 (22.Ra1 Nd3 23.Ka2 c6-+) 22...Nd3 23.Kc2 (23.Kb1 Ne1 24.Re1 Bc4-+) 23...Ne1 24.Re1 Bg5 (better 24...Bh5 25.b6 cb6 26.Qb3-+) 25.hg5 Bh5 26.Nf6 Kg7 27.Rh1 h6 28.gh6 (28.Nh5 gh5 29.Rh5 hg5 30.Qg3-+) 28...Kf6 29.Qg3 Ke7 30.Qh4 (30.f4 ef4 31.Qf4 Rh8-+) 30...Kd7 (30...f6!? 31.Qg3-+) 31.Qh3 Ke8 32.Qh4 (32.Qe3 c6 33.bc6 Qc7-+) 32...Qh4 33.Rh4 Ke7 34.Rh3 Kf6 35.Rc3 (35.d4 ed4 36.Kd3 Rh8 37.Kd4 Rh6-+) 35...Rh8 (35...Rac8 36.Rc4-+) 36.Rc7 Rac8 37.b6 Rc7 38.bc7 Rc8 39.Kb3 Rc7 40.h7 Kg7 41.h8Q Kh8 42.f4 Rc5 (better 42...ef4 43.d4 Bd1 44.Kb2-+) 43.fe5 de5 44.Kb2 Rc4 (44...g5 45.Ka2 g4 46.Kb3 g3 47.Ka2 g2 48.Kb2 g1Q 49.Ka2 Rc2 50.Kb3 Qb1 51.Ka3 Qb4) 45.d4 Rd4 46.Kb3 Rb4 47.Kc3 f6 48.Kc2 g5 49.Kd2 Bg6 (49...g4 50.Kd1 g3 51.Kc2 g2 52.Kc1 g1Q 53.Kc2 Qd4 54.Kc1 Qc3) 50.Ke3 Bf5! 51.Kf2 (51.ef5 Rf4 Double attack (51...Rf4 Decoy)) 51...Be4 52.Kg3 (52.Ke3 f5 53.Kd2 g4 54.Ke2 Rb2 55.Kd1 g3 56.Kc1 Rc2 57.Kd1 g2 58.Ke1 g1Q) 52...Bd5 (52...Rb3 53.Kf2 Rf3 54.Kg1 g4 55.Kg2 Rd3 56.Kf2 g3 57.Ke2 f5 58.Ke1 Bf3 59.Kf1 Rd1) 53.Kf2 Rb3 (53...Rb3 54.Ke1 g4 55.Ke2 Bc4 56.Ke1 g3 57.Kd2 g2 58.Kc1 g1Q 59.Kc2 Rb1 60.Kd2 Qc1; 53...g4 54.Kg3 Rb3 55.Kf2 g3 56.Ke2 g2 57.Kf2 Rb1 58.Ke3 g1Q 59.Kd3 Qf2 60.Kc3 Rb3) 0-1. thujer (2765) - zsolti_83 (2705), Casual Bullet game, lichess.org, 2021.

4.h3 a6 5.a4=+.

4.h3 c5 5.g4 (5.Nf3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 d5=+) 5...h6 6.e3 a6 7.Nc3 (7.a4 d5=+) 7...d6 (7...d5 8.Nf3–/+) 8.Qf3 (8.a4 d5=) 8...ab5–/+ 9.Bb5 Nbd7 (9...Nc6–/+) 10.Ba4? (10.Qg2!?=) 10...Kf8 (10...d5!? 11.Nge2 0-0–+) 11.Nge2 Nb6 (11...Ne5 12.Qg2–/+) 12.Bb5= d5 13.Nf4 (13.0-0 h5 14.g5 Nfd7=+) 13...Bd7 14.a4 Na4?? (better 14...Bc6 15.Bc6 bc6–/+) 15.Ba4+- Ba4 (15...d4 16.Bd7 Ra1 17.Ba1 dc3 18.Bb5+-) 16.Na4 (16.Ra4 Ra4 17.Na4 Qa5+-) 16...Kg8? (16...b5 17.Nc3 Ra1 18.Ba1+-) 17.Nh5 (17.0-0!? Kh7+-) 17...Nh5 18.gh5 f6 (18...b5 19.Nc3+-) 19.Rg1 (19.Qg4 Ra6+-) 19...Kf7 (19...Rh7 20.Qg4 Ra6 21.Ke2+-) 20.Qg4 (20.Ke2 Rg8 21.Qg2 Ra6+-) 20...Rh7 (20...Rg8 21.Ke2 Ra5 22.Bc3+-) 21.Rb1 (21.Ke2 Ra6+-) 21...b5 (21...Ra6 22.Nc3+-) 22.Nc3 b4 (22...Qe8 23.Ne2 e5 24.Qf5+-) 23.Ne2 f5 (23...Bd6+-) 24.Qg6 Kf8 25.Bg7 (better 25.Qh7 Bg5 26.h4 d4+-) 25...Rg7 26.Qg7 Ke8 27.Qh6 Kd7 28.Nf4 Ra6 (28...Kc6 29.Qe6 Qd6 30.Qf5+-) 29.Rg6 Qf8 (29...Bf8 30.Qh7 Be7 31.Rg8+-) 30.Rg7 e5 31.Ng6 Ke8 32.Nf8 (better 32.Re7 Qe7 33.Qh8 Kd7 34.Ne7 Ke7 35.h6 Kf7 36.Qg7 Ke6 37.Qg6 Ke7 38.Qa6 Kd7 39.h7 Ke7 40.h8Q e4 41.Qaf6 Kd7 42.Qhd8) 32...Rh6 33.Ng6 Bf6 34.Rb7 Rh5 35.Ra1 Rh6 (35...Bd8 36.Ra8 Rh7 37.Rh7 e4 38.Re7) 36.Ra8 Bd8 37.Re7 1–0. the_root – quislingslayer, gameknot.com, 2019.

5.Nc3 c6 6.e4= cb5 7.ab5 d6 8.Nf3 Nbd7 9.Be2 Nc5 10.d3 b6 11.0-0+= Bb7 12.h3 Qc7= 13.Nd2 Rac8 14.Ra7+= Qb8 15.Ra1 Rc7 16.f3 Qc8 17.d4 Ncd7 18.Bd3 Rc3=+ 19.Bc3 Qc3 20.Nb3 Ra8 21.Ra8 Ba8 22.Qa1 Qa1?? 23.Ra1+- g6 24.Ra8 Kg7 25.Ra7 e5 26.de5 de5 27.g4 g5 28.Kf1 Bf8 29.Nd2 Nc5 30.Bc4 (30.Bc4 Ncd7 31.f4 ef4 32.Nf3+-) 1–0. mic (2110) – rgiarrocco (2285), net–chess.com, 2008.

5.c4 d5 6.e3 a6 7.Nf3 Nbd7 8.Be2 dc4 9.Bc4 Nb6 10.Be2 ab5 11.ab5 Ra1 12.Ba1 Bd7 13.0-0 c6 14.bc6 Bc6 15.Nc3 Nbd5 16.Qb3 Nc3 17.Bc3 Ne4 18.Bd4 Bf6 19.Qb2 Bd4 20.Nd4 Bd5 21.Bf3 (21.d3 Nf6+=) 21...Qa5 22.Rd1 (22.Be4 Be4 23.f3 Bg6=) 22...Ra8 23.h3 Qa2 24.Qb4 Qa4 25.Qa4 Ra4 26.d3 Nf6 27.Rc1 g6 28.Nb5 (28.Rb1 Bf3 29.Nf3 Ra7=) 28...Bf3 29.gf3 Nd5 30.Rc8 Kg7 31.f4 h5 (31...b6 32.Kg2=) 32.Rd8 Nf6 (32...Rb4 33.Nd6 Nf6 34.Kg2=) 33.Nd6 (33.Rb8!?+=) 33...Rb4 34.Kg2 Rb2 35.Kf3 Rb6 36.Nc4 Rb3 37.Ne5 Rb5 (37...b5 38.Rb8 Ng8 39.Rb7=) 38.Rc8+= Nd5 39.e4 Ne7 40.Rc7 Kf8 41.Nd7 Ke8 42.Nf6 Kf8 43.Ke3 Rb3 (better 43...Rb1!?+=) 44.Nd7+/- Kg7 (better 44...Ke8!? 45.Nc5 Rb5 46.Nb7 Rb1+/-) 45.Nc5+- Rb5 46.Ne6! (46.Re7?! Rc5 47.Rb7 Rc1+/-; 46.Rb7?! Rc5 47.Re7 Rc1+=) 46...fe6 47.Re7 Kf6 48.Rc7 (48.Rh7 g5 49.Rh6 Ke7 50.fg5 Rg5+-) 48...e5 (48...g5 49.fg5 Kg5 50.f4 Kh4 51.Re7+-) 49.fe5 Ke5 50.f4 Kf6? (50...Ke6 51.Rg7 Kf6 52.Rh7+-) 51.Rd7 (51.e5 Ke6 52.Rg7 Rb1 53.Rg6 Kd5+-) 51...Rb3? (51...Ke6 52.Rg7 Kf6 53.Rh7+-) 52.Rd6 (better 52.e5 Ke6 53.Rg7 Rb1 54.Rg6 Kd5+-) 52...Kf7 53.Kf3 (53.e5!? b5+-) 53...b5 54.Kg3 (54.Ke3 Rb1+-) 54...b4 55.Kh4 Rb1 (55...Rc3 56.Kg5+/-) 56.Kg5 Rg1 57.Kh6 Rg3 58.h4 Rf3 59.Rg6 Rf4 60.Rg7 (60.Kh5?? Rh4 61.Kg5 Rg4 62.Kg4 Kg6-+) 60...Kf6 61.Rb7 Rh4 62.Rb4 Rh3 63.Rb5 (63.d4!?+/-) 63...h4 (63...Rd3 64.Kh5 Re3 65.Kg4 Re4 66.Kf3=) 64.Kh5 (better 64.d4+=) 64...Rh1?? (better 64...Rd3 65.Kh4 Rd4=) 65.Kg4+- h3 66.Rd5 (66.Rf5 Kg6 67.Rf3 h2+-) 66...h2 (better 66...Ke6+-) 67.Kh3 Ke6 68.Kg2 Rg1 69.Kh2 Rg8 70.Kh3 Rg7 71.Kh4 Rg8 72.Rg5 (72.d4!? Rg1+-) 72...Rd8 (72...Rh8 73.Rh5 Rd8+-) 73.Rg3 Ke5 74.Kh3 Rf8 75.Kg2 Kd4 76.Rf3 Ra8 77.Kg3 Ra2 78.Kf4 Ra8 79.Kg4 (79.Rh3 Rf8 80.Kg5 Ke5+-) 79...Rg8 80.Kh3 Rg7 81.Rg3 Rf7 82.Kg4 Rf8 83.Rh3 Rf7 84.Rf3 Rg7 85.Kh4 Rg8 86.Rg3 (better 86.Kh5+-) 86...Rh8= 87.Kg4 (87.Kg5 Rg8 88.Kf4 Rf8 89.Kg4 Ke5+-) 87...Rf8 88.Rf3 Rg8 89.Kh3 (89.Kh5 Kc3+-) 89...Rh8?? (89...Rg7 90.Kh2+-) 90.Kg2 Rg8?? (90...Ra8 91.Rf7 Kd3+-) 91.Kf2 Ra8 (91...Rh8 92.Kg3+-) 92.Re3 (92.Rf7 Kd3 93.Kf3 Re8 94.Rd7 Kc4+-) 92...Rf8 93.Ke2 Ra8 (93...Rh8 94.Rf3+-) 94.Rh3 (94.e5 Kd5 95.e6 Kd6+-) 94...Rb8 (94...Ra2 95.Kf3+-) 95.Rh5 Rb2 96.Kf3 Kd3 97.Rd5 Kc4 98.Rd1 Rb8 (98...Kc5 99.e5+-) 99.e5 Rb4 100.Ke4 Kc5 101.Kf5 Rb2 102.e6 Rf2 103.Ke5 Re2 104.Kf6 Kc6 (104...Rf2 105.Kg6 Re2 106.Kf7+-) 105.e7 Rf2 106.Ke6 Re2 107.Kf7 Rf2 108.Ke8 Re2 (108...Kc7 109.Rc1 Kb7 110.Rc5+-) 109.Rf1 Kd6 110.Kf8 Re7 111.Rd1 Kc7 112.Ke7 (112.Ke7 Kc6 113.Ke6 Kc5 114.Ke5 Kc4 115.Kd6 Kb3 116.Kc5 Kc2 117.Rd5 Kb3 118.Rd3 Kb2 119.Kc4 Kc2 120.Rd4 Kb2 121.Rd2 Kc1 122.Kc3 Kb1 123.Rd1 Ka2 124.Rc1 Ka3 125.Ra1) 1-0. Timmermans,Mark (2385) - Kalashian,D (2395), Titled Tuesday, 2021.

5.c4 d5 6.e3 dc4 7.Bc4 c6 8.Nf3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3 c6 8.a4).

5.c4 d5 6.e3 dc4 7.Bc4 Nbd7 8.Nf3= Nb6 9.Be2 a5 10.0-0 Nfd5 11.d4 Bf6 (11...Bd7 12.Nc3=) 12.Nbd2 Bd7 (12...Be7 13.Nc4+=) 13.Ne4 Be7 14.Nc5 Qc8 (14...Bc8 15.Rc1+=) 15.Ne5+- Be8 16.Bf3 (16.e4 Nf4+-) 16...Nd7 17.Ned7 Bd7 18.Rc1 Rd8 19.Qb3 Be8 20.Rfd1 b6 21.Nd3 Qd7 22.Ne5 Qd6 23.Nc6 Bc6 24.Rc6 Qd7 25.Rdc1 Rac8 26.Bd5 ed5 27.g3 (27.Ba3 Ba3 28.Qa3 Re8+-) 27...Bd6 (27...Re8 28.Ba3+=) 28.Ba3 (28.Qd5 Qg4+-) 28...Ba3 (28...Qe7! 29.Bd6 Rd6+=) 29.Qa3+- Re8 30.Qc3 Re7? (better 30...Qe7+-) 31.Rb6!!+- Rce8 (31...cb6 Exploits the pin 32.Qc8 Annihilates a defender: c8) 32.Rc6 f5 (32...Qg4 33.Qa5 Qf3 34.Qc3+-) 33.Rc7 Qe6 34.Re7 Re7 35.Qc6 (35.Qc6 Kf7 36.b6 Qc6 37.Rc6+-) 1–0. BeepBeepImAJeep (2675) – bogdanb (2420), lichess.org, 2015.

5.e3 a6 6.c4 c6 7.Nf3 d5 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Be2).

5.e3 c6 6.c4 cb5 7.cb5 d5 8.Nf3 Nbd7 9.Be2 a5 10.0-0 Nb6 11.d4 Bd7 12.Nbd2 Rc8 13.Rc1 Rc1 14.Qc1 (14.Bc1 Qb8=) 14...Qc8 (better 14...Na4!? 15.Ba3 Bb4–/+) 15.Qa1 Qb8 (15...Qc2 16.Bd1 Qc7 17.Ba3 Ba3 18.Qa3=) 16.Ne5 Rc8 17.f4 (17.Bc3 Qa7+=) 17...Ne4 (17...Bb4!? 18.Ndf3 h6=) 18.Ne4+= de4 Black gets the initiative 19.Rc1 f5? (19...Bb4 20.Bc3 Qc7 21.Bc4+=) 20.Rc8 (better 20.Bc3!? Qd6 21.Ba5 Rc1 22.Qc1+-) 20...Qc8+= 21.Bc3 Bb4 22.Bb4 ab4 23.a5 Nd5 24.Bc4 (better 24.a6 ba6 25.ba6+=) 24...Ne3–/+ 25.Bb3 (25.Qc1 Nc4 26.Nd7–+) 25...Bb5–+ 26.Kf2 (26.Qe1 Qc3 27.Be6 Kf8 28.Qc3 bc3–+) 26...Nd5 27.Qa2?? (27.g3 Qc3 28.Qc3 bc3–+ (28...Nc3?! 29.Be6 Kf8 30.Ke3–/+)) 27...Qd8 (better 27...Qc3 28.g3 Qc1–+) 28.g3 Ba6 (28...e3 29.Kg1–+) 29.Bc4 h6 30.Qb3? (better 30.Bb3–+) 30...Qa5 31.Ba6 (31.Bd5 Qd5 32.Qd5 ed5–+) 31...Qa6 (31...ba6 32.Qc4 b3 33.Qb3 Qd2 34.Kg1 e3–+) 32.Nc4 (32.Qc4–+) 32...Qa1 33.Nb2 (33.Kg2 Qd4 34.Ne5 Qd2 35.Kh1 Qe1 36.Kg2 Ne3 37.Qe3 Qe3–+) 33...Qa3 (better 33...e3 34.Qe3 Ne3–+) 34.Qc2 Qf3 (better 34...Qc3 35.Qe2 Qd4 36.Kg2 e5 37.fe5 f4–+) 35.Ke1 (35.Kg1 Qe3 36.Kf1 b3–+) 35...Ne3 (35...Qh1 36.Ke2 Qh2 37.Ke1 Qc2 38.Nd1 Nc3 39.Nc3 e3 40.Ne2 Qb1 41.Nc1 Qc1 42.Ke2 Qd2 43.Kf3 Qf2) 36.Qe2 (36.Qf2 Qh1 37.Kd2 Ng4–+) 36...Qh1 37.Kd2 Nf1 (37...Ng2 38.Nd1 Qh2 39.Qf2 e3 40.Ne3 Ne3 41.Qh2 Nf1 42.Kc2 Nh2 43.Kb3–+) 38.Kc2 Qh2 39.Kb3 (39.Qh2 Nh2 40.Na4–+) 39...Qe2 40.Nc4 Qd3 41.Kb4 Qd4 42.Kb5 Qc4! 43.Kc4 Decoy to c4 43...Ng3 44.Kd4 e3 (better 44...g5 45.Ke3 gf4 46.Kf4 Nh5 47.Ke3–+) 45.Ke3 Nh5 (better 45...h5 46.Kf3–+) 46.Kf3 Nf4! 47.Kf4 Decoy theme: f4 47...b5 (47...g5!? 48.Ke5 Kf7 49.Kd6–+) 48.Ke5 b4 (better 48...Kf7 49.Kd4–+) 49.Kd4 b3 50.Kc3 h5 51.Kb3 h4 52.Kc2 h3 53.Kd2 h2 54.Ke3 h1Q 55.Kf4 (55.Ke2 Qe4 56.Kf2 f4 57.Kg1 Qe2 58.Kh1 f3 59.Kg1 Qg2) 55...Qh4 (55...Qe4 56.Kg3 f4 57.Kg4 f3 58.Kh3 f2 59.Kg3 f1Q 60.Kh2 Qfg2) 56.Ke5 Qe4 57.Kd6 e5 58.Ke7 Qc4 59.Kd6 Qa6 60.Ke7 (60.Ke5 Qf6 61.Kd5 f4 62.Kc5 f3 63.Kd5 f2 64.Kc4 f1Q 65.Kc5 Qc3 66.Kb6 Qb1 67.Ka6 Qca1) 60...g5 (60...e4 61.Kd8 e3 62.Kd7 Qb6 63.Ke7 e2 64.Kd7 e1Q 65.Kc8 Qee6) 61.Kd7 g4 (61...e4 62.Ke7 e3 63.Kd8 Qb6 64.Ke7 e2 65.Kd7 e1Q 66.Kc8 Qee6) 62.Kc7 e4 63.Kb8 (63.Kd7 e3 64.Kc7 e2 65.Kd8 Qb6 66.Kd7 e1Q 67.Kc8 Qee6) 63…e3 (63...e3 64.Kc7 e2 65.Kd7 e1Q 66.Kc7 Qe7 67.Kb8 Qed6; 63...Qc6 64.Ka7 g3 65.Kb8 g2 66.Ka7 g1Q 67.Kb8 Qgb6) 0–1. BeepBeepImAJeep (2525) – Nzuri (2230), lichess.org, 2017.

5.e3 c6 6.c4 cb5 7.cb5 d5 8.Nf3 Nbd7 9.Be2 Bd6 10.0-0 e5 11.d4 e4 12.Ne5 Re8 13.Nd7 Bd7 14.Nd2 (14.Ba3 Bb8=) 14...Bf5 (14...a6 15.Qb3=+) 15.Re1 (15.Ba3 Ba3 16.Ra3 Rc8=) 15...Qc7 16.Nf1 h5 (16...Qe7 17.Qb3=) 17.Rc1 (17.Bh5 Bb4 18.Re2 Rac8=) 17...Qd7= 18.Bh5 Nh5 19.Qh5 Bg4 20.Qh4 Be7 21.Qg3 Bd6?? (21...Bb4 22.Bc3 Bd6 23.Qh4=) 22.Qh4 Be7 23.Qg3 Qd6?? (23...Bd6 24.Qh4=) 24.f4 (better 24.Qg4 Qb4 25.Qe2+-) 24...Bf5 (24...Bd7 25.Ra1 Qh6 26.Qf2=) 25.Bc3 (25.Ra1 Qh6 26.Qf2 Bd7=) 25...Qh6 (25...Qa3!?=) 26.Qf2+= Bh4 27.Ng3 Bg4 (27...a6 28.ba6 Ra6 29.a5=) 28.Rf1 (28.Bb4 a6+=) 28...Rac8 (better 28...a6=) 29.Be1?? (29.Bb4 a6+=) 29...f5 (better 29...Rc1 30.Qa2 Qe6-+) 30.Qd2+= g6 (30...Rc1 31.Qc1 Bg3 32.Bg3+=) 31.Bf2 (31.Rc8 Rc8 32.Qa5 Qg7 33.Qa7 Bg3 34.Bg3 Be2+-) 31...Bf6 (31...Rc1 32.Qc1 Bg3 33.Bg3+/- (33.hg3?! Be2=)) 32.Rc8 Rc8 33.Rc1 Qf8 34.Rc3 (34.Rc8 Qc8 35.h3 Bh5+-) 34...Be7 (34...Rc3 35.Qc3 Qd8 36.Qc5+/-) 35.Qc2 (35.Rc8!? Qc8 36.h3+-) 35...Rc3 (35...Bd1 36.Qc1 (worse 36.Rc8 Bc2 37.Rc2 Kf7=+) 36...Rc3 37.Qc3+=) 36.Qc3+/- Bb4 37.Qc7 Qe7 38.Qc8 (38.Qb8 Kg7 39.Qa7 Qc7+-) 38...Kf7 39.h3 (39.Qc1 Kg7+/-) 39...Bd1 40.Qb8 (better 40.h4!? Kg7 41.h5+=) 40...Ba4=+ 41.Qa7 Bb5 42.Qb6 Bc6 43.Ne2 Bd6 44.Be1 Bc7 45.Qb3 g5 46.Bb4 (46.Bg3 g4=+) 46...Qf6=+ 47.fg5 Qg5 48.Bd2 Bd7?? (better 48...Ke8!?=+) 49.Nf4 (49.Qb7 Qd8 50.Qd5 Be6 51.Qd8 Bd8+-) 49...Bc6? (49...Be6 50.Qb7 Qe7+-) 50.Nd5+- Bd5 51.Qd5 Kg6 52.Qe6 (better 52.Qb7 Qg3 53.Kf1+-) 52...Kh5?? (better 52...Qf6 53.Qc8 Qe7+/-) 53.Qf7+- Qg6 (53...Kh6 54.Qc7 Qg7 55.Qd6 Kh5 56.Qd5+-) 54.Qc7 f4 (54...b5 55.d5 Kh6 56.d6 Qh5 57.Kh2 Qg5 58.d7 Kg6 59.Qd6 Kh7 60.Bc3 Qd8 61.Qe6 Qf8 62.d8Q Qd8 63.Qf7 Kh6 64.Qg7 Kh5 65.g4 fg4 66.hg4 Kh4 67.Be1) 55.Qf4 (better 55.ef4 e3 56.g4 Kh6 57.g5 Kh5 58.Qb7+-) 55...b5 (55...Qe8 56.g4 Kg6 57.d5+-) 56.Qg4! Qg4 57.hg4 Kg4 58.Bb4 Kf5 59.Kf2 (59.Kf2 Kg4 60.d5 Kf5 61.g4 Ke5 62.d6 Ke6 63.g5 Ke5 64.d7 Ke6 65.d8Q Ke5 66.g6 Ke6 67.g7 Kf5 68.g8Q Ke5 69.Qgd5) 1-0. BeepBeepImAJeep (2755) - Arzybek_Sezdbekov (2425), Rated Bullet game, lichess.org, 2020.

5.e3 c6 6.c4 d5 7.Nf3 a6 8.Nc3 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Nc3).

5.e3 c6 6.c4 d5 7.Nf3 dc4 8.Bc4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3 c6 8.a4).

5.e3 Ne8 6.c4 Bf6 7.d4 c5 8.Nf3 cd4 9.Bd4 a6 10.Nbd2 Bd4 11.Nd4 ab5 (11...e5 12.N4f3 d6 13.Be2=) 12.ab5+= Ra1 13.Qa1 b6 (13...d6 14.Bd3+=) 14.Be2 (14.Qa7 Qc7 15.Qc7 Nc7+=) 14...Bb7 15.0-0 d5 16.Bf3 Qc7 (16...e5 17.Nf5 e4 18.Be2+-) 17.Rc1 dc4 18.Rc4 Qe7 (18...Qd7+-) 19.h3 (19.Qa7!? Nd6 20.Rc2+-) 19...Bf3 20.N2f3 (worse 20.gf3 Nd6 21.Nc6 Nc6 22.Rc6 Qg5 23.Kh1 Qd5=+) 20...Nd6 21.Rc1 Qb7 22.Qb2 (22.Qb1 Qd5+=) 22...Nd7 23.Nc6 Nc5 24.Rd1 Nb5?? (better 24...Nde4+=) 25.Qb5+- Rc8 (25...Qc7 26.Nfe5+-) 26.Nfe5 (26.Nd8 Qe7 27.Qb6 Qc7 28.Qc7 Rc7+-) 26...f6 27.Nc4 Qc6 (27...Qc7+-) 28.Rd8!! Kf7 (28...Rd8 A deflection 29.Qc6) 29.Nd6 Kg6 30.Rc8 (better 30.Qb1 f5 31.Nc8+- (31.Rc8?! Qd6 32.Qb5 Kh5+-)) 30...Qd6 31.Qb1 (31.Rc6 Qd2 32.Qb1 Kh6 33.Rb6 Nd3+-) 31...f5 32.Ra8 (32.Qb5 Kh5+-) 32...Ne4 33.Ra2?? (better 33.Qb2+-) 33...b5?? (better 33...Nc3 34.Qb2 Na2 35.Qa2 b5–+) 34.Rb2 (better 34.Qb5!? Nc3 35.Qe8 Kf6 36.Ra1+-) 34...Nc3+- 35.Qc2 Nd1?? (better 35...b4+-) 36.Rb5+- Kf6 37.Rb1 Nf2 38.Qf2 Qd5 (38...h5 39.Qh4 Kg6 40.Rb7+-) 39.Rf1 (39.Qh4 Kg6+-) 39...Qd3 (39...g5 40.Qb2 Qe5 41.Qd4+-) 40.Qf4 Qd2 41.e4 (41.Qh4 Kf7 42.Qd4 Qd4 43.ed4 g5+-) 41...Qf4 42.Rf4 g5 43.Rf1 f4 44.g3 Ke5 45.gf4 gf4 46.Re1 h5 (46...Kf6 47.e5 Kg5 48.Kg2+-) 47.Kf2 Kd4 (47...Kf6 48.e5 Kf5 49.Kf3+-) 48.Kf3 e5 (48...Ke5 49.Ra1 Kf6 50.Ra6+-) 49.Rd1 Kc4 50.Rd5 Kc3 51.Re5 Kd3 52.Rh5 Kd4 53.Rf5 Kd3 (53...Kc3 54.e5 Kb2 55.e6 Kb1 56.e7 Kb2 57.e8Q Kb3 58.Qb5 Ka3 59.Rf4 Ka2 60.Ra4) 54.Rf4 (54.e5 Kd2 55.e6 Kc3 56.e7 Kd3 57.e8Q Kc3 58.Qc6 Kd2 59.Rd5 Ke1 60.Qc1) 54...Kd4+- 55.Rf5 Kc4 56.Rd5 Kc3 57.h4 Kc4 58.h5 Kc3 (58...Kb3 59.h6 Kb2 60.h7 Ka3 61.h8Q Kb3 62.Qb8 Kc4 63.Qb5 Kc3 64.Rc5 Kd4 65.Qc4) 59.h6 Kc4 (59...Kc2 60.h7 Kb3 61.h8Q Kc4 62.Qd4 Kb3 63.Rb5 Kc2 64.Rb2 Kc1 65.Qd2) 60.h7 Kc3 (60...Kb4 61.h8Q Kb3 62.Qb8 Kc4 63.Qb5 Kc3 64.Rc5 Kd4 65.Qc4) 61.h8Q Kc4 (61...Kb3 62.Qb8 Kc4 63.Qb5 Kc3 64.Rc5 Kd4 65.Qc4) 62.Qh6 Kc3 (62...Kb4 63.Qb6 Kc3 64.Rc5 Kd2 65.Qd6 Ke1 66.Rc1) 63.Qc6 Kb2 (63...Kb4 64.Rb5 Ka3 65.Qa8) 64.Rb5 Ka3 65.Qa6 (65.Qa8) 1–0. BeepBeepImAJeep (2620) – spartasoldier (1950), lichess.org, 2017.

5.e3 Ne8 6.f4 Bf6 7.Nc3 Be7 (7...Bh4 8.g3 Bf6 9.Nf3=) 8.Nf3 a6 9.Bd3 ab5 10.ab5 Ra1 11.Ba1 (11.Qa1 d5=) 11...d6 (11...d5 12.0-0=) 12.0-0+= Nd7 13.Ne4 Ndf6 14.Ng3 h6 15.e4 c6 16.e5 (16.Bd4 Nc7+=) 16...Nd5= 17.bc6 (17.f5 cb5 18.fe6 Be6=) 17...bc6 (17...Nf4 18.cb7 Bb7 19.Be4=+) 18.ed6 Nd6 19.Nh5 (19.Ne5 Qb6 20.Kh1 Rd8=) 19...Nf6 (19...g6 20.Qe1=+) 20.Ng3 (20.Nf6 Bf6 21.Be5 c5=) 20...Nf5 (20...Qb6 21.Kh1=) 21.Nf5 ef5 22.Kh1 Ne4 23.Ne5 Bc5 24.Qe1 Re8 25.Nc6 (25.Be4 fe4 26.Qe4 Qd5+= (26...Qd2? 27.Qc6 Rd8 28.Qc5+-)) 25...Qb6= 26.Ne5 (better 26.Be4!? fe4 27.Qg3=) 26...Nf2-/+ 27.Rf2 Bf2 28.Qf1 f6 29.Bc4 Kh7 30.Nd3 Bd4 (30...Ba6 31.Nf2 Bc4 32.d3-+) 31.h3 (better 31.Bd4!? Qd4 32.Bb5-+) 31...Ba1-+ 32.Qa1 Bb7 (32...Qc6 33.Bb3 Re2 34.Qf1 Rd2 35.Ne1-+) 33.Qf1 Qd4 34.Bb3 Re4 (34...Be4 35.Kh2-+) 35.Kh2 Qd6 36.Bf7 (36.Qf2 Rd4-/+) 36...Ba6 37.Kh1 (better 37.g3-+) 37...Bd3 38.cd3 Qf4 (better 38...Rf4 39.Qe2 Qe5 40.Qe5 fe5-+) 39.Qd1?? (39.Kg1 Rb4-+) 39...Rd4 (better 39...Re7 40.Kg1 Qg3-+) 40.Qe2 (40.Bc4-+) 40...Qd6?? (better 40...Ra4 41.Qd1 Ra7-+) 41.Qe8+- g6 (41...h5 42.Qg8 Kh6 43.Qh8 Kg5 44.Qh5 Kf4 45.Qh4 Ke5 46.Qe1 Re4 47.de4 Qd3 48.ef5 Kf5 49.Qe6 Kf4+-) 42.Qg8 1-0. cabbage9 (2835) - zsolti_83 (2665), Rated Bullet game, lichess.org, 2020.

5.e4 a6 6.c4? (6.Nc3 d5 7.e5 Nfd7=+) 6...ab5 (6...Ne4 7.Nc3 Nc3 8.Bc3–/+) 7.ab5 (7.e5!? Ne4 8.Qc2=+) 7...Ra1–/+ 8.Ba1 c6 (8...Ne4 9.Bg7 Kg7 10.Qg4 Ng5 11.h4–+) 9.Nf3 (9.e5 Ne4=) 9...d5 (9...Ne4 10.Qc2 d5 11.Bd3–/+) 10.Nc3 (10.e5 Ne4=) 10...dc4 (better 10...Ne4 11.Qc2 Nf6–/+) 11.Nd4?? (11.Bc4 cb5 12.Bb5 Bd7=) 11...cb5 (better 11...Qd4 12.Qb1 Bc5 13.Nd1 Qe4 14.Qe4 Ne4 15.Bc4–+) 12.Nd5?? (better 12.Ndb5!? Nbd7 13.Bc4=) 12...Na6 (12...ed5 13.e5 Ne4 14.Be2–+) 13.Ke2?? (better 13.Nf6 Bf6 14.Nb5 Ba1 15.Qa1–/+) 13...Bd7 (13...ed5 14.e5 Bc5 15.Qb1–+) 14.Nc6 (14.Ne7 Qe7 15.Qb1–+) 14...Bc8 (14...Bc6 15.Ne7 Qe7 16.f3–+) 15.Bc3 (better 15.Nde7 Kh8 16.Nd8 Rd8 17.Bf6 gf6 18.Qa1+-) 15...Kh8 (15...bc6 16.Ne7 Qe7 17.e5–+) 16.Nd4?? (better 16.Nd8 ed5 17.Nf7 Rf7 18.Bf6 de4 19.Qb1 Rf6 20.Qb5 (20.Qe4?? Re6 21.Kf3 Re4 22.Ke4 Nc5 23.Ke3 Ne6–+) 20...Bg4 21.Ke1+-) 16...e5 (16...ed5 17.e5 Bc5 18.Ke1–+) 17.g3 (17.Nc2 Ne4 18.Ne7 Qe7 19.Ke1–+) 17...Qb6 (17...ed4!? 18.Nf6 Bf6 19.Ba1 d3 20.Kf3 Ba1 21.Qa1–+) 18.f3 (better 18.Nb6 ed4 19.Bd4 Ne4 20.d3+-) 18...Qc7 (better 18...Nd5 19.Nc2 Nc3 20.dc3–+) 19.Nb3?? (better 19.Nc7 ed4 20.Ba5+-) 19...Nd5–+ 20.f4 (20.ed5 cb3 21.Qb3–+) 20...Qd8 (20...Nc3 21.dc3 Bg4 22.Ke1 Bd1 23.Nd4–+) 21.Nd4 White prepares f5 (21.Qc1 Nc3 22.Qc3 Bg4 23.Kf2 cb3–+) 21...Nac7 (21...Nc3 22.dc3 Bg4 23.Ke3 Bd1 24.Bc4–+) 22.Rg1 (22.Nf3 Nf6 23.Be5 Ne4–+) 22...Nb4 (better 22...Nc3 23.dc3 Bg4 24.Ke3 Bd1 25.fe5–+) 23.f5 (23.fe5 Nd3 24.Nf5 b4–+) 23...Qd7 (23...ed4 24.Ba1–+) 24.Ke1 (24.Qb1 Nd3 25.Nc2–+) 24...Ne6 (24...ed4 25.Bb4 Bb4 26.Bg2–+) 25.g4 (25.fe6 fe6 26.Nf3–+) 25...Na2 (better 25...Nd4 26.Kf2 Bc5 27.Bb4 Bb4–+) 26.Nb3 (26.Nf3 Ng5 27.Ba1 Qd6–+) 26…Ba3 (better 26...Bh4 27.Rg3 Nc3 28.dc3 cb3 29.fe6 Qe6–+). RichardSommer (2100) – chesszone9937 (2095), lichess.org, 2020.

5.e4 b6 6.c4 (6.e5 Nd5=) 6...d5 (6...Ne4 7.Nc3 Nc3 8.Bc3–/+) 7.Ne2? (7.e5 Ne4=+) 7...dc4 (7...de4 8.Nbc3–/+) 8.Nf4? (8.Ng3 a6=) 8...c5 (better 8...Ne4 9.Bc4 Bb7–/+) 9.Nd3?? (9.e5 Nd5 10.Qf3 Bg5 11.Nd5 ed5=+) 9...c3 (better 9...cd3 10.e5 Qd5 11.Qf3 Qf3 12.gf3–+) 10.Na3?? (better 10.Nc3!? Bb7 11.Qf3=+) 10...a6 (10...cb2!? 11.Nb2 Ne4 12.Bd3 Nf2 13.Bh7 Kh7 14.Qc2 Kg8 15.Kf2–+) 11.Qb1?? (11.dc3 Ne4 12.Qe2 Bb7–+) 11...a5 (better 11...cb2 12.Nb2 e5–+) 12.Qc1?? (better 12.dc3 Ne4 13.Qc2–/+) 12…c4. RichardSommer (1950) – Salahmat (2015), lichess.org, 2020.

5.e4 c6 6.c4 d5 7.Ne2 a6 8.Nbc3 ab5 9.ab5 Ra1 10.Nc1?? (better 10.Qa1 dc4 11.Ng3-/+) 10...Rc1! 11.f3 (11.Bc1 d4 Combination; 11.Qc1 de4 Combination) 11...cb5 (11...Rd1 12.Kd1 d4 13.Ne2-+) 12.e5 (12.Qc1 bc4 13.Ne2 b5-+) 12...Nbd7 (12...Rd1 13.Nd1 Nh5 14.cb5-+) 13.Be2 (13.Qc1 Ne5 14.Nb5 Nc4 15.Bc4 dc4 16.Qc4 Bd7-+) 13...Qb6 (better 13...Rd1 14.Nd1 Nh5 15.cd5 ed5-+) 14.Rg1 (14.Qc1 Ne5 15.Nb5 dc4 16.Be5 Qb5 17.Bg3-+) 14...Qc5 (better 14...Qg1!? 15.Bf1 Rd1 16.Nd1-+) 15.Bd3 Nb8 (better 15...Rd1 16.Nd1 Qg1 17.Bf1-+) 16.Bf5 Qc7 (16...Qg1 17.Ke2 Qg2 18.Ke3 Nc6 19.Ne2 Rd1 20.Bc3 ef5 21.Bd4 Nd4 22.Kd4 Qf3 23.e6 Rd2 24.Ke5 Ng4) 17.Bc2 (17.Bc2 Qe5 18.Kf1 Rd1 19.Bd1 dc4 20.g3-+). BeepBeepImAJeep (2625) - themurdercastle (2370), Rated Bullet game, lichess.org, 2015.

5.e4 d6 6.c4? (6.Nc3 Nbd7=) 6...e5 (6...Ne4 7.Nf3–/+) 7.Nh3 (7.Nc3 Nbd7=+) 7...Bg4 (better 7...Bh3 8.gh3 Ne4–/+) 8.Nc3?? (better 8.Qc2=+) 8...Nfd7 (8...Bd1 9.Rd1 Nbd7 10.d4–+) 9.Ng1 (9.Qg4 Nc5+-) 9...Bf3 (9...Bd1 10.Rd1 a6 11.Nf3–+) 10.Nh3 (better 10.Nf3 Nc5+-) 10...Bg2 (10...Bd1 11.Rd1 a6 12.Be2–+) 11.Be2?? (better 11.Bg2 Nc5 12.0-0+-) 11...Qe8 (better 11...Bh1 12.Kf1 d5 13.ed5 Bb4–+) 12.Bf3 (12.Nd5 Bd8 (12...Bh1?! 13.Nc7 Qc8 14.Na8–+; 12...Bh3 13.Nc7 Qc8 14.Na8+=) 13.Rg1 Bh3–+) 0–1. RichardSommer (2045) – queen97 (2035), lichess.org, 2020.

5.e4 Ne4 6.Bd3 Nc5 7.Be2–/+.

5.e4 Ne4 6.Bd3 f5 7.Nf3–/+.

5.f3 c6 6.e4 cb5 7.Bc4?? (7.ab5 d5-/+) 7...a6 (7...bc4 8.Ba3-+) 8.Qc1?? (8.ab5 d5 9.Bb3 de4-/+) 8...Ra7 (better 8...bc4 9.Nc3 d5-+) 9.ab5-/+ d6 10.Ra5?? (better 10.Ne2 Nbd7 11.Nbc3=) 10...Qa5-+ 11.Bf6 (11.Bc3 Qb6 12.Ne2-+) 11...Qb5 (better 11...Bf6 12.ba6 Qc5-+) 12.f4 (better 12.Bb5 Bf6 13.Qa3+-) 12...Qc4-+ (12...gf6 13.Bb5 ab5 14.Qb2+=; worse 12...Bf6 13.Bb5 ab5 14.Nf3=+) 13.Ba1 (13.Be7 Qe4 14.Ne2-+) 13...Qe2 Nc3 Qf2+ (better 13...Bh4 14.g3 Qe4 15.Kf2 Qh1 16.gh4 Qh2 17.Kf1 Qf4 18.Ke1 e5-+; 13...b5+- Nxe2) 14.Ne2 Ra8 15.Qd1 Bh4 (15...Nc6) 1-0. TimC (2365) - MarathonMan (2300), Rated Bullet game, lichess.org, 2015.

5.Nf3 c6 6.e3 cb5 7.ab5 b6 8.d4 Bb7 9.c4 a5 10.ba6 (10.Be2 d5=) 10...Na6=+ 11.Nc3 Nc7 (11...Qc7 12.Be2=) 12.Ra8 (12.Be2 Ra1 13.Qa1 d5=) 12...Qa8 13.Be2 d5 14.0-0 dc4 15.Bc4 Ncd5 (15...b5 16.Bd3=+ (worse 16.Nb5 Nb5 17.Bb5 Bf3 18.gf3 Rb8-/+)) 16.Nd5 (16.Qb3 Nc3 17.Ra1 Qb8 18.Bc3 Ng4=) 16...Bd5= 17.Be2 (17.Bd5 Qd5 18.Ne5 Rc8=) 17...Rc8=+ 18.Bc1 (18.Bd3 Bd6=+) 18...Qb7 19.Bd2 (19.Bb5 Bd6=+) 19...Ne4 (better 19...b5-/+) 20.Ne1? (20.Qe1 b5 21.Bb4 Bb4 22.Qb4 Nc3-/+) 20...Nd2 (better 20...Bb3! 21.Qb3 Nd2-+) 21.Qd2-/+ Qc6 (21...b5 22.Bf3-/+) 22.Bf3=+ Bf3 (22...Qc3 23.Qd3=+) 23.Nf3 b5 24.Rd1 (24.Ne5 Qa8=+) 24...Qb6 Black prepares the advance b4 (24...b4 25.Rb1-/+) 25.Kf1 (25.d5!?=+) 25...b4-/+ 26.Ke2? (better 26.Ne1!?-/+) 26...b3-+ 27.Rb1?? (27.Qd3 b2 28.Rb1 Rc1-+) 27...Qb5 (better 27...Rc2 28.Qc2 bc2 29.Rb6 c1Q-+) 28.Qd3-/+ Rc2 29.Nd2 Rd2?? (better 29...Qb4-/+) 30.Kd2+/- Bb4 (better 30...Qa5!? 31.Kd1 Qa2 32.Rb3 Qf2 33.Rb8 Bf8+/-) 31.Ke2+- Qa4? (31...Qh5 32.Kf1 Qh2 33.Rb3 Bd6+-) 32.Qb3 Qb3 (32...Qb5 33.Qd3 Qh5 34.Kf1+-) 33.Rb3 Bf8 34.Rb8 g6 35.Kd3 Kg7 36.Rb7 Kf6 37.Ke4 Bg7 38.Kf3 (better 38.d5 ed5 39.Kd5+-) 38...Kf5 (38...g5 39.g4+-) 39.h3 (better 39.Rf7 Kg5 40.Rg7+-) 39...Kf6 40.g4 g5 41.Rb5 (41.e4 Bf8+-) 41...Kg6 42.Ke2 f6 (42...h5 43.Kd3 hg4 44.hg4+-) 43.f3 (43.Rb6 Kf7+-) 43...h6 (43...Bf8 44.Rb6 Kf7 45.Rb7 Kg6 46.e4+-) 44.e4 (44.Rb6 Kf7+-) 44...f5 (44...Bf8 45.Kd3 Ba3 46.Kc4+-) 45.Rb7 (better 45.gf5 ef5 46.ef5 Kf6+-) 45...fe4 (45...Bd4 46.Kd3 Bf2 47.Rb5 fg4 48.fg4+-) 46.fe4 (better 46.Rg7 Kg7 47.fe4+-) 46...Bd4 47.Rb6?? (better 47.Kd3 Be5 48.Kc4+-) 47...Be5 (better 47...Bb6 48.e5 Bd4-+) 48.Rc6 (better 48.Re6 Kf7 49.Re5+-) 48...Bf6?? (48...Kf7 49.Kd3+-) 49.Kf3 (better 49.Re6 Kf7 50.Rb6+-) 49...Kf7 50.e5 (better 50.Ke3 Be5 51.Rc8+-) 50...Be7?? (better 50...Be5 51.Ke4 Kf6+/-) 51.Rc7+- Ke8 52.Rb7 Kf7 53.h4 (better 53.Ke4 Ke8 54.Kd3+-) 53...Ke8?? (better 53...gh4 54.Kg2 Ke8+/-) 54.h5 Kf7 55.Rb8 Bf8 56.Ra8 (56.Rb3 Bc5+-) 56...Be7 (56...Kg7 57.Ra7 Kg8 58.Rb7+-) 57.Ra7 Ke8 58.Ra5 Kf7 59.Rb5 1-0. BitChess (2390) - Gezal (2490), Rated Bullet game, lichess.org, 2016.

5.g3 c6 6.Bg2 cb5 7.ab5 d5 8.Nf3 Nbd7 9.0-0 Qb6 10.Nc3 Nc5 11.Ne5 Bd6 (11...Nfe4 12.d4 Nc3 13.Bc3+=) 12.d4+= Be5 (12...Ncd7!?+=) 13.de5+/– Nfe4 (13...Nfd7 14.Qd4+-) 14.Ne4+- Ne4 15.c4 Rd8? (better is 15...Nc5 16.Qc2 dc4 17.Qc4 Bd7+-) 16.Bd4 Nc5 (16...Qc7 17.cd5 ed5 18.b6+-) 17.Qc1 Qc7 (17...dc4 18.Qc4 Rd4 19.Qd4+-) 18.cd5 b6 (18...ed5 19.Qc5 Qc5 20.Bc5+-) 19.d6 Qb8 20.Bc5 bc5 (20...Bb7 21.Be3 Bg2 22.Kg2+-) 21.Ba8 Qa8 22.Qc5 h6 (22...Rd7 23.Qc6 Qb7 24.Rfc1+-) 23.Ra7 Qe4 24.Qc7 Rf8 25.Qe7 Qe5 26.Rc1 Qb5 27.Qf8! Kf8 28.Rc8 Qe8 29.d7 (29.d7 Qd8 30.Rd8 Ke7 31.Rf8 Kf6 32.d8Q Kg6 33.Rff7 e5 34.e4 h5 35.Rg7 Kh6 36.Qd6) 1–0. Mister – Kbc, internet free game, 2018.

6.e3 ab5 7.ab5 Ra1 8.Ba1 b6 9.Nf3 Bb7 10.Be2 c5 11.0-0 d5 12.d4 Nbd7 13.Nbd2 cd4 14.Nd4 Nc5 15.cd5 Bd5 16.Bf3 Qa8 (16...Qd7 17.Nc6=) 17.Bd5+= Nd5 (worse 17...ed5 18.Nc6 Bd8 19.Nb3+-) 18.Nc6 Bf6 19.Nc4 Ba1 20.Qa1 Qa1 (20...Qb7 21.Qe5+=) 21.Ra1 Nc3? (better 21...f5+=) 22.Nb6+- Nb5? (22...g5+-) 23.Nc4 (better 23.Ra5+-) 23...Nc3 (23...Ne4 24.Ra5 Nec3 25.Na3+=) 24.h4 Nd5 (24...h6 25.Ra7+=) 25.Ra7 f6 (25...f5 26.Nd6+=) 26.Nd6+- h6 27.g4 Kh7 28.h5 f5 29.gf5 ef5 30.Ra5 (better 30.Nd4!? Nf6 31.Ra5+-) 30...Rf6= 31.Nf5?? (31.Rc5 Rd6 32.Kg2 g6=) 31...Rf5?? (better 31...Rc6 32.Ra7 Ne6–+) 32.Rc5= Ne3 33.Rc3 (33.fe3 Rc5) 33...Ng4 (33...Rg5 34.Kh2 Nd1 35.Rf3–/+) 34.f3 (34.Nd4 Rh5 35.Rg3 Ne5–/+) 34...Ne5 (34...Nf6 35.Nd4 Rh5 36.Rc7–/+) 35.Ne5 (35.Nd4 Rg5 36.Kf2 Rh5=+) 35...Re5–/+ 36.Kg2 Rh5 37.Rc4 Rf5 38.Kg3 Rf6 39.Ra4 g5 40.Kh3? (40.f4 gf4 41.Rf4 Rc6–/+) 40...Kg6 (better 40...Rf3!? 41.Kg2 Rd3–+) 41.Kg3–/+ h5 42.Rb4 (better 42.f4–+) 42...h4 (42...Rc6 43.Ra4–+) 43.Kg2? (better 43.Kg4=) 43...Kh5 44.Ra4 Rf5 45.Rb4 Ra5 46.Rb3 Ra2 47.Kh3 Ra4 48.Kg2 Ra2?? (48...Kg6 49.Rb8–+) 49.Kg1?? (49.Kh3 Ra1 50.Rb8–+) 49...Ra8 (49...h3 50.Rb4–+) 50.Rb4 Rf8 51.Kg2 Rf4 52.Rb6 h3?? (better 52...Rd4–+) 53.Kg3= Rh4 54.Kh2 Rf4 55.Kh3 (better 55.Kg3=) 55...Rf3–/+ 56.Kg2 Rf4 57.Rb3 Kg4 (57...g4 58.Rd3–/+) 58.Ra3 (better 58.Rg3!? Kf5 59.Rf3=) 58...Rc4 59.Rh3?? (better 59.Rg3 Kh5 60.Rh3 Kg6 61.Rb3–/+) 59...Rc2 60.Kf1 (60.Kh1 Kh3 61.Kg1 g4 62.Kf1 g3 63.Ke1 g2 64.Kd1 Ra2 65.Ke1 g1Q) 60...Kh3 61.Ke1 g4 62.Kd1 (62.Kf1 g3 63.Ke1 g2 64.Kd1 Ra2 65.Ke1 g1Q) 62...Rg2 (62...Rf2 63.Ke1 g3 64.Kd1 g2 65.Ke1 g1Q) 63.Ke1 g3 64.Kf1 (64.Kd1 Ra2 65.Kc1 g2 66.Kb1 Re2 67.Kc1 g1Q) 64...Rf2 (64...Ra2 65.Ke1 g2 66.Kd1 g1Q) 65.Ke1 Kg4 66.Kd1 Kf3 (66...g2 67.Ke1 g1Q) 67.Ke1 g2 68.Kd1 g1Q 0–1. BeepBeepImAJeep (2710) – Anwesh9792 (2705), lichess.org, 2020.

6.e3 ab5 7.ab5 Ra1 8.Ba1 c6 9.Nf3 d5 10.Be2 Ne4 11.0-0 Qa5 (11...dc4 12.Bc4 Nd6 13.Bd3=) 12.Nc3 f5 13.Qb3 Nd7 (13...cb5 14.cb5 Bd7 15.Nd5 ed5 16.Qd5 Kh8 17.Be5+-) 14.Ne4 (better 14.d4!?+=) 14...fe4=+ 15.Nd4 Nc5 (15...Qd2? 16.Bc3 (16.bc6 dc4 17.Bc4 Nc5+-) 16...Nc5 17.Qb4+-) 16.Qc2 e5 17.Nb3 Nb3 (17...Qa4 18.Rb1 Be6 19.bc6 dc4 20.Nd4 ed4 21.Qa4 Na4 22.cb7–/+) 18.Qb3= Be6 (18...Qd2 19.cd5 cd5 20.Qd1 Qd1 21.Rd1= (worse 21.Bd1 Bf6–/+)) 19.Be5 (better 19.bc6 bc6 20.Qb7+=) 19...Ra8? (19...Qd2!? 20.bc6 bc6+=) 20.Bc3 (20.bc6!? bc6 21.Qb7+-) 20...Qa2+- 21.Qa2 Ra2 22.cd5 Bd5 (22...cd5 23.Ra1 Ra1 24.Ba1+-) 23.Rb1 (23.bc6 bc6 24.f3 ef3 25.Bf3 g6+-) 23...Kf7 24.h3 (24.f3 Bf6 25.fe4 Bc3 26.ed5 cd5 27.Bh5 g6 28.dc3 gh5+-) 24...Bf6= 25.Bf6 (25.bc6 bc6 26.Bh5 g6 27.Rb7 Be7+=) 25...gf6 (25...Kf6!? 26.bc6 Bc6=) 26.bc6+= Bc6?? (better 26...bc6 27.Rd1 Ke6+=) 27.Bc4+- (27.Bc4 Ke7 28.Ba2+-) 1–0. BeepBeepImAJeep (2760) – scabies (2415), lichess.org, 2020.

6.e3 ab5 7.ab5 Ra1 8.Ba1 d5 9.Nf3 dc4 10.Bc4 c6 11.0-0 Bd7 12.Nc3 cb5 13.Bb5 Bb5 14.Nb5 Qd3 15.Nbd4 (15.Qb1 Qb1 16.Rb1 Nbd7=) 15...Nc6 (15...Nbd7 16.Qb1 Nc5 17.Bc3=+) 16.Qb1 Qa6 (16...Nb4 17.Bc3 Nfd5 18.Bb4 Nb4 19.Qd3 Nd3 20.Rb1=) 17.Nc6+= bc6 18.d4 (18.Ng5 Qb5 19.Bf6 Qb1 20.Rb1 gf6+=) 18...c5 (18...Ra8 19.Ne5=) 19.dc5 Bc5 (19...Nd7 20.Qe4 Nc5 21.Qg4=) 20.Bf6 (20.Ng5 h6 21.Bf6 hg5 22.Bg5 Qe2+/-) 20...gf6+= 21.Qe4 f5 22.Qf4 Be7 23.Rd1 (23.Qh6 f6+=) 23...Bf6 (23...Rd8 24.Re1+=) 24.g3 (24.h3 Rd8 25.Rd8 Bd8+=) 24...Ra8 (24...Rc8 25.Kg2=) 25.Kg2 Qa4 26.Qa4 Ra4 27.Rd7 Ra8 28.h4 Rd8 29.Rb7 (29.Rd8 Bd8 30.Kf1 Bf6=) 29...Kg7= 30.Ne1 h6 31.Kf3 Rd6 32.Ng2 e5 33.Ne1 (33.e4 fe4 34.Ke4 Rd4 35.Ke3 Ra4=) 33...Rd2=+ 34.Kg2 Bd8 (34...e4 35.Kf1=+) 35.Nf3 (better 35.Rb5 f4 36.ef4=) 35...Bf6?? (better 35...Rd5=) 36.Nd2+- e4 (36...Kg6 37.Rb6+-) 37.Nc4 1-0. BeepBeepImAJeep (2605) - bam_bam_po_gubam (2520), Rated Bullet game, lichess.org, 2016.

6.e3 ab5 7.ab5 Ra1 8.Ba1 d5 9.Nf3 dc4 10.Bc4= Nbd7 11.0-0 b6 (11...Bd6 12.Qc2=) 12.d4 (12.Nd4 Bb7 13.Nc6 Bc6 14.bc6 Qa8 15.Bf6 Nf6=) 12...Bb7= 13.Nbd2 Re8 (13...c6 14.Qc2=) 14.Bb2 Nf8 (14...Bd6 15.Qc2+=) 15.Qb3 Ng6 16.Be2 Qd7 17.Nc4 Ra8 18.Nce5 Ne5 19.Ne5 Qd5 (19...Qd8 20.Bc4 Bd5 21.Rc1=) 20.Qd5 Nd5 21.Ra1 Ra1 22.Ba1 f6 (22...Bd6 23.Nc4=) 23.Nd3 (23.Nc6 Kf7+=) 23...Nb4 (23...c6 24.e4 Nc7 25.bc6 Bc6 26.f3=) 24.Bc3 Nd3 25.Bd3 Kf7 (25...c5 26.Kf1=) 26.f3 (26.Bh7? g6–/+) 26...h6 27.e4 Ke8 28.Kf2 Kd7 29.Ke3 Bd6 (29...c6 30.g4=) 30.f4 f5 (30...c6 31.bc6 Bc6 32.g3=) 31.ef5 Bg2 32.d5 ef5 (better 32...ed5!? 33.Bg7 Bc5 34.Ke2 h5+-) 33.Bf5+- Ke7 34.Bg7 Bd5 35.Bh6 The passed pawn on h2 will become decisive later 35...Bc4 (35...Bc5!? 36.Kd3 Bg2+-) 36.Bg5+- Kf7 37.Bd7 Bc5 38.Ke4 Bb3 39.Bc6 (39.h4 Bc2 40.Kd5 Bd1+-) 39...Bc2 40.Kd5 Bd6 41.Bd7 Kg6 42.h4 Bd1 43.f5 Kh7 44.f6 Bf3 45.Kd4 Bh5 46.Ke4 Bf7 47.Bf5 (47.Kf5 Bg6 48.Kg4 Kg8+-) 47...Kg8 48.Bg4 Bc4 49.h5 (49.Bd7!? Kf7+-) 49...Bb5 50.Be6 Kh7 51.Bf5 Kg8 52.h6 Be8 (52...Ba4 53.h7 Kh8+-) 53.h7 Kh8 (53...Kf8 54.h8Q Kf7 55.Qg7) 54.f7! Bc6 (54...Bf7 55.Bf6 A beautiful mate combination) 55.Kd4 Bc5 56.Kc4 (56.Kc3 Be7 57.Be7 Bd5 58.Bf6) 56...Kg7 (56...Bb5 57.Kb5 c6 58.Kc6 Kg7 59.h8Q Kf7 60.Be6 Ke6 61.Qf6) 57.Bf6!! Kf6 Deflection from h8 58.h8Q Kf5 (58...Kf7 59.Qh7 Kf6 60.Qg6 Ke5 61.Qc6 Kf5 62.Qc7+-) 59.f8Q Bf8 60.Qf8 Ke6 61.Qd8 Bd7 (61...Ba4 62.Qc7 b5 63.Kd4+-) 62.Qc7 b5 63.Kc5 Ke7 (63...Be8 64.Qd6 Kf7 65.Qd8+-) 64.Qd6 (64.Qd6 Ke8 65.Qf6 b4 66.Kd6 b3 67.Qe7) 1–0. BeepBeepImAJeep – Nawww (2420), lichess.org, 2017.

6.e3 b6 7.Nf3 Bb7 8.Be2 d6 9.0-0 Nbd7 10.d4 Kh8 11.Nbd2 Rg8 (11...c5 12.bc6 Bc6 13.Bd3=) 12.Qb3 g5 (12...c5 13.bc6 Bc6 14.Bd3=) 13.Ne1 g4 14.Nd3 Rg7 15.Nf4 h5 (15...c6 16.Rfb1+=) 16.d5 (16.a5 ba5 17.Ra5 e5+/-) 16...e5 17.Nd3 Qg8 18.Qc2 h4 19.Nb4 a5 (19...h3 20.g3+=) 20.Nc6+/- Bc6 21.dc6 (21.bc6 Nc5+/-) 21...Nc5+= 22.Ba3 (22.f4 gf3 23.Bf3 Qh7 24.Qh7 Kh7+=) 22...Qh7 23.Qh7 Kh7 24.Bb2 (24.Bd1 Nfe4 25.Ne4 Ne4 26.Bg4 Rg4+=) 24...Rag8 25.Bc3 (25.Bd1=) 25...Nfe4 Black prepares the advance g3 (better 25...h3!?=+) 26.Ne4+= Ne4 27.Bd3 f5 28.Be4 fe4 29.Rad1 (29.c5 bc5 30.Ba5 Bg5+/-) 29...g3 (29...Ra8!?=+) 30.fg3 hg3 31.h3 (31.hg3 Kh6 32.Kf2 Rf8 33.Ke1 A) 33...Rg3 34.Rf8 Bf8 35.c5 Re3 36.Kd2 Rd3 37.Kc2 dc5 38.Be5+- (38.Rd3 ed3 39.Kd3 Bd6+=); B) 33...Rf1 34.Kf1 Bf6+= (34...Rg3? 35.c5+-)) 31...Bg5= 32.Rfe1 Rf7 33.Re2 (33.c5 bc5 34.Ba5 Ra8 35.Bc7 Rc7 36.Rd6 Rf7+=) 33...Rgf8 34.Rde1 (34.c5 bc5 35.Ree1=) 34...Rf2 (34...Rf5 35.Rc1-/+) 35.Bd2 (better 35.c5=) 35...Kg6 36.Bc1 R8f7 (36...Kh5 37.Bd2-/+) 37.Bd2 Rf8 38.Bc1 R8f7 (38...R8f5!?-/+) 39.Bb2 (39.Bd2 R7f5-/+) 39...Rf8 (39...Kh5 40.c5 dc5 41.Be5-/+) 40.Bc3 (40.Bc1 Kh5-/+) 40...Kh5 (better 40...R8f5-/+) 41.Rd2?? (better 41.c5=) 41...Kh4 (41...Be3 42.Rf2 gf2 43.Kf1 fe1R 44.Ke1-+) 42.Rb2?? (better 42.Rde2-/+) 42...Be3!-+ 43.Re3 (43.Re3 Rf1 Mate attack) 43…Rf1 0-1. BeepBeepImAJeep (2655) - bam_bam_po_gubam (2500), Rated Bullet game, lichess.org, 2016.

6.c4 c6 7.Nf3 d5 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Be2).

6.d4 ab5 7.ab5 Ra1 8.Ba1 d6 9.c4 Nbd7 10.Bd3 c6 11.bc6 bc6 12.Nf3 Qa5 13.Bc3 Qc7 14.0-0 Ba6 15.Qd2 Rb8 16.Ba5 Qa7 17.Bc3 c5 18.d5 ed5 19.cd5 Nd5 20.Ba6 Nc3=+ 21.Nc3 Qa6 22.Nd5 Bf8 23.Nc7 Qa5?? 24.Qa5+- (24.Qa5 Nf6 25.Qa7+-) 1–0. femmenikita (1960) – Eralos (2100), ajedrez21.com, 2005.

6.f4 ab5 7.ab5 Ra1 8.Ba1 c6 9.Nf3 cb5 10.Nc3 (10.Bb5 d5=) 10...b6 (10...b4!? 11.Nb5 Ne4=+) 11.Nb5 Bb7 12.Bd3 Nc6 13.0-0 Qa8 (13...Nb4 14.Be2=) 14.Nbd4 Nb4 15.Be2 Qa2 16.Bc3 Ra8 17.Ne5 Nbd5 18.Ba1 Bc5 19.Bc4 Qa5 20.Nb3 Qa4 21.Nc5 bc5 22.Bb3 Qb5?? (22...Qe4 23.Rf3=) 23.Nc4?? (better 23.c4 Qb4 24.cd5+-) 23...Bc6 (23...Qc6 24.Qf3=) 24.Be5 Nb6 (better 24...Ne8!?+=) 25.Nd6+/- Qb4 26.Bc3 Qa3 27.Qe2 (27.Bf6 gf6 28.Qh5 Rf8+-) 27...Nbd5 (27...Nfd5!? 28.Ba1 Qb4+=) 28.Be5+/- Ba4 (28...Qb4 29.e4 Ne7 30.Bc3+/-) 29.Ra1+- Qa1?? (better 29...Qb4+-) 30.Ba1 Bb3 31.Bf6 (31.cb3?! Ra1 32.Kf2 Nc7+-) 31...Ra1 (31...Bc2 32.Bb2 Rb8+-) 32.Ba1 (32.Ba1 Ne7 33.Qb5 Nc6 34.Qb7 h5 35.Qc8 Kh7 36.Qf8 Nd4 37.Bd4 e5 38.Ne8 Kg6 39.Qg7 Kf5 40.Nd6 Ke6 41.Qe5) 1-0. cabbage9 (2845) - zsolti_83 (2655), Rated Bullet game, lichess.org, 2020.

7.a5? bc4–+ 8.Bc4 d5 9.Be2 c5 10.Nf3 Nc6 11.a6 (11.0-0 Ra5 12.Ra5 Qa5–+) 11...ba6 12.0-0 a5 13.d4 c4 14.Nc3 Nb4 (14...Bd7 15.Ne5–+) 15.Ne5 Nd7 16.f4 Ne5 (16...Nb6 17.Ba3–+) 17.fe5 f6 18.ef6 Bf6 19.Bf3 Bb7 20.e4?? (20.Na4 Be7–+) 20...Bc6 (better 20...Nd3 21.e5 Be5 (worse 21...Nb2 22.Qe2 Qb6 23.ef6 Qd4 24.Kh1 Qc3 25.Qe6 Rf7 26.Bd5 Bd5 27.Qd5–+) 22.de5 Qb6 (22...Nb2?! 23.Qb1–+) 23.Kh1 Qb2–+ (worse 23...Nb2 24.Na4 Na4 25.Qa4–+)) 21.e5 Be7 22.Bg4 Qd7 (22...Rf1 23.Qf1 Bd7 24.Ne2–+) 23.Qe2 Nd3 24.Ba3 (24.Rf8 Bf8 25.Qc2 Qe8–+) 24...Ba3 (24...Rf1 25.Qf1 Rf8 26.Qb1 Ba3 27.Ra3–+) 25.Ra3 Rf1 26.Qf1 Rf8 27.Bf3?! (27.Qe2 Qe7 28.Ra1 Rf4–+) 27...a4 (27...Qa7 28.Ne2 Ne5 29.Kh1 Nf3 30.gf3–+) 28.Qd1 (28.Kh1 Qe7 29.Ra2 Qg5–+) 28...Qb7 (28...Qe7 29.Ra2 Qa7 30.Ne2 Ne5 31.Ra3–+) 29.Na4 (29.Qa1 Qe7 30.Kh1 Qg5–+) 29...Qb4 30.Rd3 (30.Ra1 Ba4 31.Ra4 Qb2–+) 30...cd3 (better 30...Ba4 31.Qd2 Qb1 32.Kf2 cd3 33.Qe1 Qb2 34.Ke3–+) 31.Nc5 (31.Qd3 Ba4 32.Kf2 Rf4–+) 31...d2 (31...Qd4 32.Kh1 Qc5 33.Bh5–+) 32.Ne6 (32.Nb3–+) 32...Qc3 (better 32...Ba4 33.Qf1 Rf3 34.gf3 d1Q–+) 33.Nf8 (33.h3 Qe3 34.Kh2 Rf3 35.Qf3 Qf3 36.gf3–+) 33...Qc1 (33...Qe3 34.Kf1 Bb5 35.Be2 Qe2 36.Qe2 d1Q 37.Kf2 Qe2 38.Kg3 Qe3 39.Kg4 h5 40.Kh4 Qf4 41.Kh5 Be2 42.Kg6 Qg4) 34.Kf2 (better 34.Ne6 Ba4 35.Qf1=) 34...Ba4–+ 35.Bd5 (35.Qa4 Deflection from e1 35...Qe1 The nicest combinations are those leading to mate) 35...Kf8?? (better 35...Kh8 36.Qa4 Qe1 37.Kf3 d1Q 38.Qd1 Qd1 39.Ke3 Qg1 40.Kd3 Qf1 41.Ke3 Qf8–+) 36.Qf3= Ke7 Threatening mate: Qe1 37.Qf7 Kd8 38.Qf8 Kc7 (better 38...Be8 39.Qd6 Bd7 40.Qb8 Ke7 41.Qb4 Ke8 42.Qb8 Ke7 43.Qd6 Kd8 44.Qb6 Ke7 45.Qd6 Kd8=) 39.Qd6+- Kc8 Do you see the mate threat? 40.Be6 Kb7 41.Bd5?? (41.Qb4 Kc7 42.Qa5 Kb7 43.Bd5 Bc6 44.Bc6 Kc6 45.d5 Kd7 46.Qa7 Ke8 47.Qa4 Kf8 48.Qb4 Kg8 49.Qb8 Kf7 50.e6 Kg6 51.Qg3 Kf5 52.Qf3 Ke5 53.Qe2 Kd5 54.e7=) 41...Ka7–+ 42.Qe7 Kb6?? (42...Ka6 43.Qb7 Ka5 44.Qa7 Kb4 45.Qb7 Kc3 46.Qc8 Kb2 47.Qb7 Ka1 48.Bb3 Bb3 49.Qb3–+) 43.Qb7?? (43.Qb4 Bb5 44.Qd6 Ka7 45.Qe7 Ka6 46.Qb7 Ka5 47.Qa8 Ba6 48.Bb3–+) 43...Ka5–+ Threatening mate: Qe1 44.Qa7 Kb4 45.Qb6 (45.Qb7 Kc3 46.Qc7 Kd3 47.Qc1 dc1Q 48.Bf3 Qe3 49.Kg3 Qg5 50.Kf2 Qh4 51.g3 Qh2 52.Kf1 Ke3 53.Bg2 Bb5 54.Ke1 Qg1 55.Bf1 Qf1) 45...Ka3 (45...Bb5 46.Qd6 Ka4 47.Bb3 Kb3 48.Qd5 Kb4 49.Qc5 Qc5 50.dc5 d1Q 51.Ke3 g5 52.e6 Qe2 53.Kd4 Bc6 54.e7 Qe4) 46.Qd6 Kb2 (46...Qc5 47.Qc5 Kb2 48.Qb4 Kc1 49.Qa3 Kb1 50.Qa2 Kc1 51.Be4 d1Q 52.Qa3 Kd2 53.Qe3) 47.Qb4 Kc2 (47...Ka1 48.Qa4 Kb2 49.Qb3 Ka1 50.Qa2) 48.Bf3 d1Q (48...Qe1) 49.Bd1 (better 49.Qa4 Kc3 50.Qd1+-) 49...Qd1 (49...Kd1 50.Qa4 Kd2+-) 50.Qc4 (better 50.Qa4 Kd2 51.Qd1 Kd1 52.Ke3+-) 50...Kb2 (better 50...Kd2 51.g4 Bb3–+) 51.Qb4 Bb3 52.Qc4?? (52.h3!?=) 52...Qc2 (52...Bc4 53.h4 Bd5 54.Kg3 Qe1 55.Kh3 Qe4 56.h5 Qg2 57.Kh4 Be6 58.d5 Qg4) 53.Qc2 Bc2?? (better 53...Kc2 54.Ke3 Bd5=+) 54.e6+- Bf5 55.e7 (55.d5 Kb3 56.Kf3 Kc4+-) 55...Bd7 (55...Bg6 56.d5+-) 56.d5 Be8 57.Ke3 Bd7 (better 57...Kc3+-) 58.Kd4+- g6 (58...h5+-) 59.Ke5 Kc3 60.Kd6 Be8 61.Kc7 Bb5 (61...Kd4 62.d6+-) 62.Kd8 (better 62.d6+-) 62...Bd7 (62...g5 63.d6+-) 63.d6 (better 63.Kd7 g5 64.d6+-) 63...Be8 64.d7 (better 64.Ke8 Kd3 65.Kf8+-) 64...Bd7 65.Kd7 Kc4 66.e8Q Kd4 67.Qe6 Kd3 68.Qd6 (better 68.Qh3!? Ke4+-) 68...Kc3 69.Qg3 (69.Qg3 Kd2 70.Qh4+-) 1–0. BeepBeepImAJeep (2730) – MikeyG (2390), lichess.org, 2016,

7.ab5 Ra1 8.Ba1 b6 9.Nf3 Bb7 10.Be2 d5 11.0-0 dc4 12.Bc4 Nbd7 13.d4 Bd5 14.Nbd2 Bc4 15.Nc4 Qc8 (15...Qa8!?=) 16.Nfe5+= Ne5 17.Ne5 Bd6 18.Nc6 Qd7 19.Qa4 Nd5 20.Bb2 h6 (20...f5 21.Ra1+=) 21.Rc1 Rc8 22.g3 (22.Ba3 Qe8 23.Bd6 Ra8+=) 22...Ne7 23.e4 Nc6 24.Rc6 Be7 25.Qc4 (25.Qc2 Bf6+=) 25...Bf6 26.Bc3 Rd8? Can d4 get defended? (better 26...Be7!?+=) 27.Rc7+- Qd6? (better 27...Qe8+-) 28.e5 Be5 29.de5 Qd1 30.Kg2 Rf8 (30...Qd5 31.f3+-) 31.Bb4 (31.Bd4 Qe1+-) 31...Re8 32.Qf4 Qd5 33.Kh3 Qb5 (33...Kh7 34.Rf7 Rg8+-) 34.Qf7 Kh8 (34...Kh7 35.Qg7) 35.Qg7 1–0. BeepBeepImAJeep (2620) – Aleks0503 (2065), lichess.org, 2017.

7.ab5 Ra1 8.Ba1 c6 9.Nf3 Qa5 10.Nc3 d5 11.cd5 ed5 12.bc6 bc6 13.Bd3 Ba6 14.Ba6 Qa6 15.Ne2 Nbd7 16.0-0 Ra8 17.h3 h6 18.Ned4 c5=+ 19.Nf5 Bf8 20.Qc2 g6 21.N5h4 Kg7 22.Ne5? Ne5?? 23.Be5= Qe6 24.Nf3 Kh7 25.Rc1 Ne4 26.Ba1 Ra5 27.Qb2+= d4 28.ed4 Bg7 29.d3 Ng5 30.Re1?? Nf3 31.gf3 Qe1 32.Kg2 Ra1 33.Qe2 Qh1 34.Kg3 Rg1 35.Kf4 Qh2 36.Ke4 Bd4 37.Kd5 Qh3 38.Qe7 Qe6 39.Qe6 fe6 (39...fe6 40.Kd6 h5–+) 0–1. FRAYBENTOS (2020) – Eralos (2055), ajedrez.educared.net, 2006.

7.ab5 Ra1 8.Ba1 c6 9.Nf3 Qa5 10.Nc3 d5 11.Be2 Nbd7 (11...dc4 12.Bc4 Bd7 13.Qb1=) 12.0-0 cb5 (12...dc4 13.Bc4 Nb6 14.Be2=) 13.cb5 (13.cd5 Nd5 14.Nd5 ed5=) 13...b6 14.d4 Bb7 15.Qb3 Ra8 16.Bb2 Qb4 17.Qb4 Bb4 18.Ra1 Ra1 19.Ba1 Bc8 20.Ne1 Bd6 21.Nc2 Nb8 (21...Kf8 22.Bb2=) 22.Na4 (22.Bb2 Nbd7+=) 22...Nbd7 (22...Bc7 23.Bd3=) 23.Bb2 Bb7 24.Ba3 Ba3 25.Na3 Kf8 26.Nc2 Ke7 27.Nb4 Kd6 28.Kf1 Ne4 29.f3 Nd2 30.Ke1 Nb3 31.Kd1 Na5 32.Kc2 Bc8 33.Kc3 f6 34.e4 Bb7 35.Bd3 de4 36.fe4 e5 37.d5 g6 (37...f5!?=) 38.Bc2 (38.Nc6 Nc6 39.dc6 Bc6 40.bc6 Kc6+-) 38...h5 39.Nc6 Bc6 40.bc6 Nc6 41.dc6 Kc6 42.Bd3 (42.Bb3 f5+-) 42...g5 (42...b5!? 43.Nb2 Nc5+=) 43.Kb4+- Kd6 (43...Nc5!? 44.Bb5 Kd6+-) 44.Bc4+- Nc5 45.Bd5 (better 45.Nc3!?+-) 45...Na4+- 46.Ka4 Kc5 47.Kb3 (47.Bf7 h4+-) 47...b5 (47...Kd4 48.Kb4+=) 48.Kc3 b4 49.Kd3 f5 (49...h4 50.Be6+-) 50.Bb3 (better 50.Bf7!? f4 51.Bh5+-) 50...f4+= 51.Ke2 (51.h3 g4 52.h4 Kd6+=) 51...g4 (51...Kd4!? 52.Bf7 Ke4 53.Bh5 Kd4=+) 52.Kd3= h4 Black intends g3 53.Bd1 g3 54.h3 b3?? (better 54...Kb5=) 55.Kc3+- (55.Bb3?? f3 56.gf3 g2–+) 55...f3 (better 55...Kd6+-) 56.Bf3 b2 57.Kb2 Kd4 58.Kc2 Ke3 (58...Kc4 59.Kd2+-) 59.Kd1 (better 59.Kc3+-) 59...Kf2 (59...Kd3+-) 60.Kd2 Kg1 (60...Kf1 61.Kc3 Kf2 62.Kc4+-) 61.Ke3 (61.Kc3 Kf1 62.Kc4+-) 61...Kh2 (61...Kf1 62.Kd3 Kf2+-) 62.Kd3 Kg1 63.Kc4 Kh2 64.Kd5 Kg1 65.Ke5 Kh2 66.Kf5 Kg1 67.Kg4 Kf2 68.Kh4 Kg1 69.Kg3 Kh1 70.h4 (70.Kf2 Kh2 71.h4 Kh1 72.h5 Kh2 73.h6 Kh1 74.h7 Kh2 75.h8Q) 70...Kg1 71.h5 (71.Be2 Kh1 72.e5 Kg1 73.h5 Kh1 74.h6 Kg1 75.h7 Kh1 76.h8Q Kg1 77.Qh2) 71...Kf1+- 72.h6 Ke1 73.h7 Kd2 74.h8Q Kc1 (74...Kd3 75.Qd8 Kc3 76.Qc7 Kb3 77.e5 Kb4 78.e6 Kb3 79.Bd1 Kb2 80.Qc2 Ka1 81.Qc3 Ka2 82.Bb3 Ka3 83.Bd5 Ka4 84.Bc6) 75.Qc8 (75.Qc3 Kb1 76.Bd1 Ka2 77.Bb3 Kb1 78.Qc2 Ka1 79.Qa2) 75...Kb1 (75...Kd2 76.Qc4 Ke3 77.Qc3) 76.Qc6 (76.Qb7 Kc2 77.Qc6 Kb2 78.Qc4 Kb1 79.Qc3 Ka2 80.Bd1 Kb1 81.Bc2 Kc1 82.Bb3 Kb1 83.Qc2 Ka1 84.Qa2) 76...Kb2 77.Qc4 Ka1 78.Qd3 (78.Qb4 Ka2 79.e5 Ka1 80.Qa3 Kb1 81.Be4) 78...Kb2 79.Qe2 (79.e5 Ka2 80.Bd5 Kb2 81.Qd2 Kb1 82.e6 Ka1 83.Qc1) 79...Ka1 (79...Kb3 80.Qd1 Kc3 81.Qg1 Kb4 82.Qd4 Ka5 83.Qc5 Ka6 84.Bg4 Kb7 85.Qb5 Kc7 86.e5 Kd8 87.Qd7) 80.e5 Kb1 81.Kf4 (81.Be4 Ka1 82.Bd5 Kb1 83.Qd2 Ka1 84.Qc1) 81...Ka1 (81...Kc1 82.Qc4 Kb2 83.Qb4 Kc1 84.Qb3 Kd2 85.Qb2 Kd3 86.Be2) 82.Ke4 (82.Bd5 Kb1 83.Qd2 Ka1 84.Qc1) 82...Kb1 83.Kd4 Kc1 84.Kc3 (84.Kc3 Kb1 85.Qb2) 1–0. BeepBeepImAJeep (2720) – Moro182 (2500), lichess.org, 2016.

7.ab5 d6?? 8.Ra8+- Nbd7 9.Nf3 e5 10.Be2 Nc5 (10...Nb6 11.Ra7+-) 11.d4 ed4 12.Nd4 Qd7 (12...Nfd7 13.Nf5 Nb6 14.Rc8 Nc8 15.Bg7+-) 13.0-0 Ne6 14.Nd2 Nd4 15.Bd4 Qf5 16.Nf3 Qg6 17.Re1 (17.Bd3 Qh5+-) 17...c6 (17...Bh3 18.Rf8 Bf8 19.Nh4+-) 18.bc6 (18.Bd3 Ne4+-) 18...bc6 19.Qb1 c5 (19...Ne4 20.Bd3 f5 21.Qb6+-) 20.Qg6 hg6 21.Rb1 (better 21.Ba1 Bf5 22.Ra7 Re8+-) 21...cd4 22.Nd4 Bd7 23.Rbb8 (23.Ra7 Rd8+-) 23...Rb8 24.Rb8 Kh7 25.Bf3 g5 26.Bc6 Bg4 (26...Be6 27.Ne6 fe6 28.Rb7+-) 27.Rb7 Ng8 28.h3 Bd1 (28...Bc8 29.Rc7 Be6 30.Ne6 fe6 31.Bd7+-) 29.g4 (29.Nf5 Bf6+-) 29...g6 (29...Bf6 30.Be4 Kh8 31.Rf7 Bd4 32.ed4+-) 30.Rb1 1-0. BeepBeepImAJeep (2650) - Elda64 (2505), Rated Bullet game, lichess.org, 2016.

6.c4 a6 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 c5 10.Be2 b6 11.0-0 Bb7 12.d4 Nbd7 13.Nbd2 Qc7 14.Bb2 (14.dc5 Bc5 15.Qb1 Ra8=) 14...Rd8 (14...cd4 15.Nd4 Ra8 16.Qc1=+) 15.Qb3 (15.cd5 Bd5 16.Qc2 Rc8=) 15...h6 (15...cd4 16.Nd4 Nc5 17.Qc2=+) 16.Rc1 Qb8 17.h3 (17.Qc2 cd4 18.Nd4 Rc8=) 17...Ne4 18.Ne4 de4 19.Nd2 cd4 20.Bd4 (20.ed4 Qf4 21.Nf1 Ra8=) 20...Bc5 (20...e5 21.Bc3=) 21.Bc3 f5 22.Qb2 (22.Rd1 Qc7=) 22...e5 (22...f4 23.Bd4=) 23.Nb3 Re8 (23...Bd6!?=) 24.Rd1+/- Qc7 25.Qd2 Bc8 (25...Re7 26.Nc5 Nc5 27.Qd8 Qd8 28.Rd8 Kf7 29.Bb4+=) 26.Bh5 Re7 (26...Rf8 27.Qd5 Kh7 28.Nc5 Qc5 29.Qc6+/-) 27.Qd5 (27.Nc5!? bc5 28.Bg6+-) 27...Kh7+/- 28.Nc5 Nc5 29.Qd6 Qd6 30.Rd6 Be6 31.Be5 (worse 31.Rb6 Na4 32.Bb4 Nb6 33.Be7 Nc4+/-) 31...Bc4 (better 31...Nd7 32.Bc3 Bc4 33.Bg6 Kg8+-) 32.Bd4?? (better 32.Bg6 Kh8 33.Bd4+-) 32...Nd3?? (better 32...Ne6+=) 33.Bg6+- Kh8 34.Rb6 f4 (34...Ne5 35.Rb8 Bg8 36.Be5 Re5 37.b6+-) 35.Rb8 Bg8 36.b6 fe3 (36...Nb4 37.Bc5 Nc6 38.Rc8+-) 37.fe3 (37.b7 Rb7 38.Rb7 ef2 39.Kf1 Bh7 40.Rb8 Bg8 41.Bf7 Kh7 42.Rg8 h5 43.Rg7 Kh6 44.g4 hg4 45.hg4 Ne5 46.Be5 e3 47.g5) 37...Nb4 (37...Ne5 38.Be5 Re5 39.b7+-) 38.b7 (better 38.Bc5 Na6 39.Rg8 Kg8 40.Be7 Kh8+-) 38...Nc6 39.Rc8 Rb7 40.Rc6 Rb1 (40...Re7+-) 41.Kh2 Rb8 (41...Rb4 42.Be4 Rd4 43.ed4+-) 42.Bf5 (better 42.Rc7 Bf7 43.Bf7+-) 42...Rf8 (42...Bb3+-) 43.Rh6 Bh7 44.Rh7 Kg8 45.Rg7 Kh8 46.Rg5 Rf6 47.Bf6 1-0. BeepBeepImAJeep (2670) - bam_bam_po_gubam (2490), Rated Bullet game, lichess.org, 2016.

6.c4 dc4 7.Nf3 a6 8.Bc4 ab5 9.ab5 Ra1 10.Ba1 c6 11.Be2 cb5 12.Bb5 Nc6 13.Nc3 Nb4 14.Be2 (14.0-0 Bd7=) 14...Nd3=+ 15.Bd3 Qd3 16.Ne5 Qf5 17.d4 Nd5 18.0-0 Nc3 (18...f6 19.Nd3=) 19.Bc3 Bf6 20.Nf3 (20.Bb4 Rd8 21.Ba5 Rf8=) 20...Qh5 21.Qb1 Bd7 (21...Rd8 22.Rc1+=) 22.Ne5 (better 22.Qb7!? Bc8 23.Qc6+-) 22...Be5= 23.de5 Bc6 24.f3 Qg6 (24...h6 25.Bd4=) 25.Bd4 Qb1 26.Rb1 Ra8 27.Rb2 Kf8 28.Kf2 Ke8 29.h4 Kd7 30.g4 h6 (30...h5 31.gh5 Rh8 32.e4=) 31.Kg3 (31.e4 b5=) 31...g6 (31...Ra3 32.Kf4=) 32.Kf4 (32.e4 b5+=) 32...Ra4 33.Rd2 b5 34.e4 Kc8 35.Bc5 Kb7 (35...Ra1 36.Rc2+=) 36.Bd6 (36.Bf8+-) 36...b4? (better 36...Ra1!?+=) 37.Rb2+- Ka6 (37...Kc8 38.Rb4 Kd7 39.Rb8+-) 38.Rb4 (38.Rb4 Rb4 39.Bb4+-) 1–0. BeepBeepImAJeep (2615) – Mirza_chess (1940), lichess.org, 2017.

6.c4 Nbd7 7.Nf3 c6 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 Nbd7 8.Be2).

6.f4 c5 7.Nf3 a6 8.Be2 ab5 9.ab5 Ra1 10.Ba1 Qa5 11.0-0?? Ne4 (better 11...Qa1 12.Nc3 Qa5-+) 12.d3 (12.Nc3!?=) 12...Nd6 (better 12...Qa1 13.de4 de4-/+) 13.c4?? (13.Nc3=+) 13...Nd7 (better 13...Qa1 14.Qc1 Nd7-+) 14.Bc3= Qb6 15.Nbd2 (15.Qd2 Qc7=) 15...Bf6 (15...Nf5!? 16.Kf2 d4 17.ed4 cd4-/+ (17...Nd4?! 18.Nd4 cd4 19.Bb2=)) 16.Ne5 (16.Qb3 Nf5 17.Bf6 Nf6=) 16...d4 (16...Nf5 17.Rf3 Be5 18.fe5=+) 17.ed4= cd4 18.Nd7 Bd7 19.Bb4 Rd8 (19...Ra8 20.Bd6 Qd6 21.Ne4+=) 20.Qb3 Qc7 21.b6 Qc8?? (better 21...Qb8+=) 22.Bd6+- 1-0. cabbage9 (2840) - zsolti_83 (2660), Rated Bullet game, lichess.org, 2020.

6.f4 c5 7.Nf3 a6 8.Be2 ab5 9.ab5 Ra1 10.Ba1 Qa5 11.Bb2 c4 12.Nc3 Nbd7=.

6.f4 c5 7.Nf3 a6 8.Be2 ab5 9.ab5 Ra1 10.Ba1 Qa5 11.Nc3 c4 12.0-0 Bd7 13.Nd4 (13.Qb1 Bb4=) 13...Bc5=+ 14.Qb1 Re8 15.d3 cd3 16.Bd3 Bd4 (16...Ng4!? 17.Nd1 Qb6=) 17.ed4+= Rc8 18.Qb3 Ne4 (18...Ng4 19.Bb2=) 19.Ne4+= de4 20.Be4 Bb5 21.Rb1 (21.Bb7? Bf1 22.Bc8 Qa1-+) 21...Bc6 22.Bc6 Nc6 23.Qb7 Qd8 24.Rd1 Ne7 25.Qb3 (25.Qe4 Qd5 26.Qd3 Qa2+=) 25...Qc7= 26.c3 Qf4 27.c4 Nf5 28.Qd3 (better 28.c5!?=) 28...Qe3 29.Kf1 (better 29.Qe3 Ne3 30.Rb1 Nc4 31.Kf2-/+) 29...Qf4 30.Ke2?? (better 30.Kg1=) 30...Ra8 31.Bb2 Ra2 (31...Qh2 32.Qh3 Qb8 33.Qc3-+) 32.Rd2? (better 32.Qb3 Ra7 33.Ra1 Ra1 34.Ba1-/+) 32...Nd4?? (better 32...Qh2 33.Qh3 Qb8-+) 33.Qd4+- Qd4 34.Bd4 (worse 34.Rd4 Rb2 35.Kd3 Kf8-/+) 34...Rb2 (34...Rd2 35.Kd2 f6+-) 35.Rb2 (35.Rb2 Kf8 36.c5+-) 1-0. cabbage9 (2830) - zsolti_83 (2665), Rated Bullet game, lichess.org, 2020.

6.c4 Nfd7 7.Nf3 Bf6 8.d4 Be7 9.Be2 Re8 10.0-0 Nf8 11.Nc3 Nbd7 12.Rc1 Nf6 13.Qb3 Bd7 14.Rfd1 b6 (14...Ng6 15.Bd3+=) 15.h3 Rb8 16.c5 (16.Ne5 de5 17.de5 a6+/-) 16...Bc8 (16...dc5 17.Qc2+=) 17.c6 Ng6 18.Bf1 Bf8 19.e4 Qe7 20.e5 Nh5 21.Ne2 Nhf4 22.Nf4 Nf4 23.Ba3 Qd8 24.Qe3 Nd5 25.Qb3 de5 (25...Nf4 26.Ra1 a6+/-) 26.Bf8 Rf8 (26...e4 27.Bg7 ef3 28.Be5+/-) 27.de5 Qe7 28.Bc4 Nf4 (28...a6 29.Rd4+/-) 29.Qe3+- Ng6 30.Rd2 f6 31.Rcd1 fe5 32.Ne5 Qf6 (32...Ne5 33.Qe5 Kh8 34.Bd3+-) 33.Nd7 Bd7 34.Rd7 (34.cd7!? Kh8 35.Qe6 Qd8+-) 34...Ne5 35.Be6! Qe6 (35...Kh8 36.Rc7 Rbe8 37.Bd5+-) 36.f4 (36.Rc7?! Rbe8 37.Ra7 Nf3 38.Kh1 Qc4=) 36...Rbe8 (36...Rf4 37.Qf4 Nd7 38.Qc7+-) 37.Qe5 Qg6 38.Qd5 (38.Qc7?! Re2 39.g4 Qe4 40.Rg7 Kh8 41.Rh7 Qh7 42.Qh7 Kh7+/-) 38...Kh8 39.Qf3 (39.Qg5!? Qg5 40.fg5 Rf4 41.Rc7 Ra4+-) 39...Rc8 40.Re7 Rg8 (40...Rfe8 41.Qe2+-) 41.Rdd7 Rcf8 (41...Qf6 42.Qg4 a5 43.Rg7 Rg7 44.Rg7+-) 42.Qg4 (42.Rc7 a6+-) 42...Qh6 (42...Qg4 43.hg4 Rf4 44.Rc7 Ra4 45.Ra7 Ra7 46.Ra7+-) 43.f5 (43.Qg5 Qg5 44.fg5 a6 45.ba6 Ra8+-) 43...Rf6 (43...a6 44.ba6 (worse 44.Rc7 ab5 45.ab5 Qf6+-) 44...Qc6 45.Rg7 Qd7 46.Rd7 Rg4 47.hg4+-) 44.Kh2 (44.Rc7 a6+-) 44...Rff8 45.Rc7 Rf6 (45...a6 46.ba6 Re8 47.Rf7+-) 46.Ra7 Rff8 47.Rad7 Rf6 (47...Qf6+-) 48.c7 Rff8 49.c8Q! Rc8 (49...Rc8 50.Re6 Combination) 50.Rf7 (better 50.Re6 Qc1 51.f6 gf6+-) 50...Rcf8 51.g3 (better 51.Rf8 Rf8 52.Qd4+-) 51...Rf7= 52.h4?? (better 52.Rf7 Qd2 53.Kg1 Qc1 54.Kf2 Qc5 55.Kf1 Qc1 56.Kf2 Qc5 57.Kf1 Qc1 58.Kf2=) 52...Rd7-+ 53.Kh3 Rf7 54.Qg5 (54.Qf3 Re8-+) 54...Rf6 (54...Qd6 55.Qf4 Qd3 56.Qf2 Rf5 57.Qg2 Rgf8 58.Qb7 Rf2 59.h5 Qf1 60.Kg4 Qe2 61.Qf3 Qf3 62.Kh4 Rh2 63.Kg5 Rh5) 55.Qh6 gh6 56.g4 Rg4! 57.Kg4 (57.Kg4 Rd6 Combination) 57...h5! 58.Kf4 (58.Kh5 Rf5 Deflection) 58...Kg7 (58...Rf8!? 59.Ke5-+) 59.Kg5 1-0. BeepBeepImAJeep (2585) - zsolti_83 (2465), Rated Bullet game, lichess.org, 2016.

6.c4 Re8 7.Nf3 Nfd7 8.Be2 Bf6 9.d4 Be7 10.0-0 Nf8 11.Nc3 Nbd7 12.Rc1 Nf6 13.Nd2 N6d7 14.Bf3 Nf6 15.a5 Rb8 (15...a6 16.Ra1+=) 16.Qa4 Bd7 17.Rfd1 Qc8 18.Nde4 White prepares c5 18...c6 19.b6 (19.d5 ed5 20.cd5 c5+/-) 19...a6 (19...ab6 20.ab6 Ne4 21.Ne4+=) 20.c5 (20.Qa3 Ne4 21.Ne4 d5+/-) 20...d5 21.Nf6 Bf6 22.e4 de4 23.Ne4 e5? (23...Qd8!?+/-) 24.Nf6 (better 24.Nd6!? Qd8 25.Ne8 Qe8 26.de5 Be5+-) 24...gf6 25.d5 (better 25.de5!? fe5 26.Qh4+-) 25...cd5+/- 26.Bd5?? (better 26.Qh4 d4 27.Qf6+=) 26...Ba4-+ 27.Rd3 Bc6 28.Rg3 Ng6 29.Ba2 Qf5 30.Bb1 Qh5 31.Rh3 (31.Bc2 Rbd8 32.Bc3 Kh8-+) 31...Qg4 32.Rg3 Qb4 (32...Qe2 33.Bc3-+) 33.Ba3 (33.Bc3 Qc5 34.Bd3 Rbd8-+) 33...Qa4 (33...Qa5 34.Ba2-+) 34.h4 (34.Bc2 Qa5 35.Ra1 Rbd8-+) 34...Be4 (better 34...Rbd8 35.Bc2 Qh4 36.Bb3-+) 35.Be4 Qe4 36.h5 Rbd8 (36...Qa4 37.hg6 fg6 38.c6 bc6 39.Bd6 Qa5 40.Bb8 Rb8 41.Rgc3-+) 37.hg6 hg6 38.c6 bc6 39.Rb3 (39.Bb2 Rd3 40.Rd3 Qd3-+) 39...Rd5 (39...Qa4 40.Rbc3-+) 40.b7 Rb5 (better 40...Rb8 41.Bc5 Rd7-+) 41.Rb5 cb5 42.Bd6 (42.Rc8 Qb7 43.Re8 Kg7 44.Bf8 Kh7 45.Re7-+) 42...Qb7 43.Rc7 Qd5 44.Bb4 Qe6 (better 44...Qd1 45.Kh2 Kg7 46.Rc3-+) 45.g3 e4 (45...Kg7 46.Rc3 Qg4 47.Be7 Qd1 48.Kg2-+) 46.Kg2 e3 (better 46...Kg7 47.Rc3-+) 47.fe3 Qe4 48.Kh3 (48.Kg1 Qe3 49.Kg2 Qe2 50.Kg1 Qd1 51.Kg2 Re2 52.Kh3 Qh1 53.Kg4 Re4) 48...Qe3 (48...Qh1 49.Kg4 Re4) 49.Bc5 Qe6 50.Kg2 (50.Kh2 Qe2 51.Kg1 Qe1 52.Kg2 Re2 53.Kf3 Qf1 54.Bf2 Qf2 55.Kg4 Qf5 56.Kh4 Qh5) 50...b4! 51.Bf2 (51.Bb4 Qe2 Mate attack) 51...b3 52.Rb7 Qe4 (52...Qe4 53.Kh2 Qb7 54.Kg1 b2 55.Kh2 b1Q 56.Be1 Re2 57.Kh3 Qh1 58.Kg4 Qbe4) 0-1. BeepBeepImAJeep (2595) - zsolti_83 (2460), Rated Bullet game, lichess.org, 2016.

6.f4 d5 7.Nf3=.

6.f4 Nfd7 7.Nf3= Re8 8.Nc3 Nf8 9.Bd3 Nbd7 10.0-0 a6 11.e4 (11.Qe1 Bf6+=) 11...ab5 12.ab5 (worse 12.Nb5 c6-/+; 12.Bb5 c6 13.Bc4 Qb6 14.Kh1 Nc5=+) 12...Ra1 13.Ba1 (13.Qa1 Nc5=) 13...Nc5 14.Qe2 White prepares e5 14...Nd3 15.cd3 b6 16.d4 White plans e5 16...Bb7 17.e5 (17.Qe3 Qd7=) 17...Qa8 18.Bb2 Ng6 19.Qe3 Rd8 20.Ra1 Bf3 (better 20...Qc8!?=+) 21.Ra8+= Ba8 22.Na2 (22.Ne2 de5 23.de5 Nh4+=) 22...de5= 23.de5 (23.fe5 Nh4 24.Qc3 Rd7= (24...Ng2? 25.Qc7 Bg5 26.Nb4+-)) 23...Nh4=+ 24.g3?? (24.d4=+) 24...Nf5 (better 24...Nf3 25.Kf1 Rd2 26.Qd2 Nd2 27.Ke2 Nc4-+) 25.Qe2+= g6 26.Nc3?? (26.Bc3 Bd5 27.Nb4 Bc5 28.Kf1 Bb4 29.Bb4 Ra8+=) 26...h5?? (better 26...Nd4 27.Qe3 Nf3 28.Kf1 Rd2-+) 27.Ne4 (better 27.Na4!?+=) 27...Be4= 28.Qe4 Bc5 29.Kf1? (better 29.Kh1 Rd2 30.Bc3=) 29...Rd2-+ 30.Bc3 Ne3 (30...Rh2 31.Qd3-+) 31.Ke1 Rh2 32.Qc6 (32.Bd2 Nf5 33.Kd1 Kg7-+) 32...Rc2 (better 32...Nd5!? 33.Bd2 Bf2 34.Kf1 Bg3-+) 33.Bd2-/+ Kg7 (33...Nf5 34.Kd1 Ra2 35.Qc7 Ng3 36.Qd8 Kh7 37.Qd3-+) 34.Qf3? (34.Qe4!? Rc4 35.Qd3-/+) 34...Nc4 (better 34...Nf5-+) 35.Bc3? (better 35.Qb3!? Rd2 36.Qc4-/+) 35...Ra2 (better 35...Bf2 36.Kd1 Ne3 37.Qe3 Be3 38.Kc2 Bf2-+) 36.Kd1? (36.f5 gf5 37.Qh5 Be7-/+) 36...Rh2 (better 36...Ne3 37.Ke1 Ra3-+) 37.Kc1 Ne3 38.Kb1 Rc2 (38...Nd5 39.Be1-+) 39.Bb2 Rc4 40.Qe2 Rb4 41.Qd3?? (better 41.Ka2 Nd5 42.Qf1-+) 41...Rd4 (better 41...Nc4-+) 42.Bd4+- Bd4 43.Qd4 Nf5 (43...Nd5 44.Kc2+-) 44.Qd7 h4 (44...Ng3 45.Qc7 Ne2 46.Qb6 Nf4 47.Qd8+-) 45.Qd8 (better 45.gh4 Ne3+-) 45...hg3 46.Qf6 (better 46.Qc7 Nd4 47.Qc4 Nf5+-) 46...Kf8 (46...Kg8+-) 47.Qf7 (better 47.Qh8 Ke7 48.Qc8+-) 47…Kf7-+ (47...Kf7 48.Ka1 g2 49.Kb1 g1Q 50.Kb2 Qc5 51.Ka1 Qc1 52.Ka2 Qc2 53.Ka3 Nd4 54.f5 Qb3) 0-1. cabbage9 (2845) - zsolti_83 (2655), Rated Bullet game, lichess.org, 2020.

6.f4 Nfd7 7.Nf3= Bf6 8.Nc3 Be7 9.Bd3 Re8 10.0-0 Nf8 11.Qe1 a6 12.Qg3 Bf6 13.Ng5 d5 14.e4 (14.Nf3 c5+=) 14...de4= 15.Nge4 Bd4 16.Kh1 ab5 17.ab5 Ra1 18.Ba1 Nbd7 19.Ng5 Nf6 (19...Nc5 20.Bc4=) 20.Nf3+= c5 (20...Bb6!?+=) 21.bc6! Bc3 (21...bc6 22.Nd4 Decoy) 22.Bc3 (22.cb7 Bb7 23.Bc3 Qe7+/-) 22...bc6 23.Ne5 Bb7 24.Rb1 Qc8?? (better 24...Ba8+/-) 25.Nc4+- Ng6 (25...N8d7 26.Nb6 Nb6 27.Bf6+- (27.Rb6?! Nh5 28.Qg5 g6+-)) 26.Nd6 (better 26.Bf6!? Qd7 27.Be5 Rd8+-) 26...Qd7 27.Ne8 (better 27.f5 Nh5 28.Qf3 Qd6 29.fg6 (29.Rb7?! ef5 30.Qf5 Re1 31.Bf1 Qf4 32.Qf4 Nhf4+=) 29...hg6 30.Rb7+-) 27...Bc8 (27...Ne8 28.Qe3 Nf8+-) 28.Nf6 gf6 29.Bf6 Qd5 1-0. cabbage9 (2830) - zsolti_83 (2670), Rated Bullet game, lichess.org, 2020.

6.c4? dc4 7.Bc4 (7.Qf3 a6=+) 7...c6 (7...Ne4 8.Qc2 Nf6 9.Nf3–/+) 8.Nf3 (8.Qf3!?=+) 8...cb5 9.ab5 Nbd7 (9...Ne4 10.Qc2 Ng5 11.Ng5 Bg5 12.Qe4–/+) 10.0-0 (10.e5 Nd5=) 10...Nb6 (10...Ne4 11.Qc2 Nef6 12.Rc1–/+) 11.Be2 (11.Qe2 Nc4 12.Qc4 a6=) 11...Bd7 (11...Ne4 12.Qc2 Nf6 13.Rc1–/+) 12.Nd4 (better 12.Nc3=) 12...Nfd5?? (better 12...Ne4!? 13.Qc2 Nd6–/+) 13.Nc3?? (better 13.ed5 Nd5 14.Bc4+-) 13...Nc3 14.Bc3 Nd5?? (14...Bf6 15.Nf3+=) 15.Qb3?? (better 15.ed5 e5 16.Nf3+-) 15...Nc3= 16.dc3 Qb6 17.Bf3 (17.e5 Bc5=) 17...Rab8 The pawn on b5 gets attacked (17...e5 18.Nf5 Bc5=+) 18.c4 (18.e5 Bc5=) 18...a6 (better 18...Bf6 19.Nc2 Ba1 20.Ra1 e5–/+) 19.Qb4?? (better 19.Rfd1=) 19...Qc6 (better 19...Bb4 20.Nc2 Bd6 21.ba6 ba6–+) 20.Qd2 (better 20.Nc6 Bb4 21.Nb4 ab5 22.Rfd1+-) 20...b6?? (better 20...Qc4 21.Be2 Qb4 22.Qb4 Bb4 23.ba6 ba6 24.Ba6 Bc3=+) 21.bc6+- b5 22.Nf5! Bd8 (22...ef5 23.Qd7) 23.Qc2 (23.c7!? Bc7 24.Ne7 Kh8 25.Qd7 Bf4+-) 23...b4 (23...Bc6 24.Nd6 Bb7 25.Rfb1+-) 24.Qa2 (better 24.cd7 ef5 25.Ra6 b3+-) 24...e5 (24...Bc6 25.Qa6 Be4 26.Be4 ef5 27.Bf5+-) 25.Bd1 (25.cd7 g6 26.Nh6 Kg7+-) 25...Ra8 (25...Bf5 26.ef5 a5 27.f6+-) 26.Re1 (better 26.cd7 g6 27.Nd6 Be7+-) 26...Bc6 (26...Bf5 27.ef5 Bc7 28.Qd2+-) 27.Nh4 (27.Qd2 a5+-) 27...Rc8 (27...Bh4 28.Qa5 f5+-) 28.g3 (28.Nf3!? Bb7+-) 28...Bh4 29.Qb1 (29.gh4 Ra8+-) 29...Kh8 (29...Be7 30.Ra6 Bb7 31.Ra7+-) 30.Re3 (30.gh4 Rfd8 31.Ra6 f5+-) 30...Be8 (30...Be7 31.Ra6 Bb7 32.Rb6+-) 31.Bf3 (31.Qb4 Rg8 32.gh4 Bd7+-) 31...Bc6 (31...Be7 32.Qb3 Rc6 33.Rd3+-) 32.Qc1 (better 32.gh4!? b3+-) 32...Ba8 (32...Bg5 33.Ra6 Bb5+-) 33.Qc3 (better 33.gh4 Rc6+-) 33...Bc6?? (better 33...bc3 34.Rc3 Be7 35.Ra6 Bb4–+) 34.Qd3 (better 34.Qb4 Bg5 35.Rb3 Rfe8+-) 34...Ba8 (34...Be7 35.Ra6 Bc5 36.Re2+-) 35.Rc1 (35.gh4 Rc6+-) 35...Be4 (35...Bg5+-) 36.Ree1 (better 36.Re4 Bf6+-) 36...Rc6 (better 36...Bd3 37.gh4 b3–+) 37.Qf1 (better 37.Qe4 Rf6 38.gh4 a5+-) 37...Rb6?? (37...Bf3 38.Re5 Bf6 39.Re3+-) 38.Rb1 (better 38.Re4 Bg5 39.Rb1+-) 38...Bb1 (better 38...Bf3 39.Re3 e4 40.Rf3 ef3 41.gh4 Rd8+-) 39.Rd1?? (better 39.Rb1!? Be7+-) 39...e4?? (39...Bc2 40.gh4 b3 41.c5 Bd1 42.Qd1–/+) 40.Bg2?? (better 40.Rb1 ef3 41.gh4+-) 40...b3?? (better 40...Bc2 41.c5 Rbb8 (41...Bd1? 42.cb6 Bc2 43.gh4+-) 42.gh4 b3–/+ (worse 42...Bd1 43.Qd1 f5 44.c6=+)) 41.f4?? (better 41.Rb1 Be7 42.Be4 b2+-) 41...Rd6?? (better 41...Bd3 42.Rd3 ed3–+) 42.g4 (better 42.Rd6!? Be7 43.Ra6 Bc5 44.Kh1 Bd3+-) 42...a5 (better 42...Bd3 43.Rd3 ed3–+) 43.c5?? (43.Rd6 Bd3 44.Qa1 f5+-) 43...Ra6?? (43...Rd1 44.Qd1 Bc2 45.Qd4–+) 44.Qe2?? (better 44.Rb1!? Rg6 45.Rb3 Rg4+-) 44...Rf6?? (better 44...Bd3 45.Rd3 ed3 46.Qd3 b2–+) 45.Rd8?? (better 45.Rb1 Rf4 46.c6+- (worse 46.Be4 a4 47.c6 Bd8+-)) 45...Rd6 (better 45...Rd8 46.f5 Bd3–+) 46.Re8 (46.Rf8) 46...Ba2?? (better 46...Re8 47.cd6 Bd3–+) 47.Qa6 (47.Rf8) 47...Rb6 (better 47...Rd1 48.Bf1 Re8–+) 48.Qc4 (48.Rf8) 48...Bb1 (better 48...Re8 49.cb6 b2 50.Qa2–+) 49.Qe2 (49.Rf8) 49...b2?? (better 49...Re8 50.cb6 Bd3–+) 50.cb6 (50.Rf8) 50...f5 (50...Re8 51.Qb2 Bf6 52.Qb1 e3+-) 51.Qe4! Bc2 (51...Be4 52.Rf8 The nicest combinations are those leading to mate) 52.Rd8 (52.Rf8) 52…b1Q–+ (52...b1Q 53.Bf1 Rd8–+ (53...Be4?? 54.Rf8); 52...Be4?? 53.Rf8) 0–1. RichardSommer (1970) – Drinkwater03 (2045), lichess.org, 2020.

6.c4 c6 7.Ne2 a6 8.Ng3 ab5 9.ab5 Ra1 10.Ba1 cb5 11.cb5 Nbd7 12.Qc1 (better 12.e5 Ne4 13.Nc3=+) 12...Nb8 13.Qc4?? (better 13.Qd1!?=) 13...Nc6 (13...dc4 14.Bc4 Qc7 15.d3-+) 14.Bd4?? (better 14.Qa4 Nb4 15.e5-/+) 14...Qa5 (better 14...dc4 15.Bf6 Bf6 16.bc6 Qb6 17.Bc4 Qb1 18.Ke2 Qb4-+) 15.Qb4?? (15.Qc3 Bb4 16.Qd3 Nd4 17.Qd4-+) 15...Nb4 16.Bc5 Qc7 (better 16...Bc5 17.Be2 Nc2 18.Kd1-+) 17.h3 e5 (better 17...Bc5 18.Be2-+) 18.Ne2 Nc6 (better 18...Nd3 19.Kd1 Qc5 20.Nbc3 Nf2 21.Kc2-+) 19.f4 Nd8 (better 19...Bc5 20.bc6 Ne4 21.g4-+) 20.Na3 (20.Na3 Qc5 21.Nc3 Qa3 22.Be2-+). BeepBeepImAJeep (2600) - KillerBateman (2490), Rated Bullet game, lichess.org, 2015.

6.c4 c6 7.Ne2 a6 8.Ng3 ab5 9.ab5 Ra1 10.Ba1 cb5 11.cb5 Nbd7 12.Nc3 Nb8 (12...Ne4 13.Nge4 de4 14.Ne4-/+) 13.Qb1 (better 13.e5 Nfd7 14.d4=) 13...Nc6?? (13...d4 14.Na4 e5 15.Nb2=+) 14.Nce2?? (better 14.bc6 bc6 15.Be2+-) 14...d4?? (better 14...Qb6 15.Bf6 Bf6-/+) 15.Bc3 (better 15.bc6 bc6 16.Nd4+-) 15...Qe8 (better 15...dc3 16.Nc3 Ne5-+) 16.Qb4?? (better 16.Nd4 Nd4 17.Bd4+/-) 16...d3 (better 16...Nb4 17.Nd4 e5-+) 17.Qc4 Na5?? (better 17...de2 18.Be2 Nb8-+) 18.Ba5+/- Bd8?? (better 18...de2 19.Be2 Bd7+/-) 19.Nd4 (19.Bd8 Qd8 20.Nc3 e5+-) 19...Ng4?? (better 19...Ba5 20.Bd3 e5=+) 20.Nde2 (better 20.Bb4 Be7 21.Be7 (21.Bd3?! Ne5 22.Qc2 Bb4=) 21...Qe7 22.Bd3+-) 20...Bd7?? (20...Ba5 21.Nf4 Qd7 22.Nd3 Rd8-+) 21.Qa2 (21.Bd8 Bb5 22.Qc5 de2 23.Be2 (23.Ne2?! Qd8 24.Qb5 Qf6+-) 23...Be2 24.Be7+- (24.Ne2?! Qd8 25.f3 Nf6+=)) 21...g6?? (21...de2 22.Be2 Nf6 23.Bd8 Qd8 24.0-0+/-) 22.h3 (22.Nc3 f5 23.Bd8 Qd8 24.ef5 Qb6+-) 22...Bb5?? (22...de2 23.Be2 (worse 23.hg4 ef1Q 24.Kf1 Bb5 25.Kg1 Bf6=+) 23...Nf6 24.0-0+/-) 23.Nf4 (better 23.Nc3 b6 24.Bb4+- (24.hg4?! ba5 25.Qb1 Bc6+-)) 23...Ne5 24.Qa1?? (better 24.Bc3 Bc7 25.Be5 Be5 26.Nd3+-) 24…b6 (24...b6 25.Bc3 g5 26.Be5 gf4 27.Bf4 Qc6+-). BeepBeepImAJeep (2610) - KillerBateman (2485), Rated Bullet game, lichess.org, 2015.

6.c4? c6 7.Ne2? (7.e5 Ne4=+) 7...a6 (7...Ne4 8.d3 Nc5 9.d4–+) 8.Ng3 (8.e5 Nfd7 9.Nf4 dc4 10.Bc4 Nb6=+) 8...Bd7 (8...Ne4 9.Ne4 de4 10.Qg4–/+) 9.Nc3 (9.e5 Ne8=+) 9...Bc5 (better 9...d4!? 10.Nb1 e5–/+) 10.d4 Bb4 11.Ba3?? (better 11.e5 Ne4 12.Nge4 de4 13.Qb3=) 11...ab5 (better 11...Bc3 12.Ke2 Ba1 (worse 12...dc4 13.Rc1 Qa5 14.Bf8 Kf8 15.b6–+; worse 12...de4 13.Rc1 Qa5 14.Bf8 Kf8 15.Qc2 Bd4 16.Ne4–+) 13.Bf8 ab5 (worse 13...de4 14.Bb4–+) 14.Qa1 Ra4–+) 12.Bb4+- b6 (12...dc4 13.Bf8 Qa5+-) 13.Nd5 (13.Bf8 Qf8 14.e5 b4+-) 13...Ra4?? (better 13...ed5 14.Bf8 Qf8+-) 14.Qc2 (14.Be7 Ra1 15.Qa1 Qe8 16.Nf6 gf6+-) 14...Bc8 (better 14...Ra1 15.Kd2 ed5 (15...Nd5?! 16.cd5 Re8 17.Bc3–+) 16.Bf8 Kf8 17.cd5 Ra4–+) 15.Ne3 (15.Ra4 ba4 16.Be7 Qd7 17.Nf6 gf6 18.Bf6 h6+-) 15...Ra6?? (better 15...Ra1 16.Ke2 Re8 (16...Qd4 17.Bc3 Qc5 18.Ba1+-) 17.cb5 cb5–+ (17...Qd4?! 18.Bc3 Qa4 19.Ba1 Qa1 20.bc6=+)) 16.Nef5 (better 16.Ra6 Ba6 17.cb5 cb5+-) 16...Ra2 (better 16...Ra1 17.Ke2 ef5 18.Bf8 Kf8 19.e5 Qd4 20.ef6–+) 17.Qb2 (better 17.Nh6 gh6 18.Ra2 c5 19.dc5 Nc6+-) 17...Ra3 (better 17...Rb2 18.Be7 Qd7–+) 18.Bf8 (18.Ne7 Kh8 19.Qa3 bc4 20.Nc8 c5 21.dc5 Qc8 22.cb6 Re8+-) 18...Rb3 (18...Ra1 19.Qa1 ef5+-) 19.Qc2 (better 19.Qb3 ef5 20.Ra8 f4 21.Bg7 Kg7 22.Rb8 fg3 23.Qg3 Kf8+-) 19...Bd7 (19...ef5 20.Qb3 Kf8 21.Ra8+-) 20.Ke2 (20.Be7 Qe8 21.Bf6 ef5 22.Qb3 gf6+-) 20...b4 (20...ef5 21.Qb3 Qf8 22.ef5+-) 21.f4 (21.Be7 Qe8 22.Qb3 ef5 23.Bf6 gf6+-) 21...Rb1 (21...Rc3 22.Qb2 Qf8 23.Ne3+-) 22.Ra6 (better 22.Be7 ef5 23.Bd8 Ra1+-) 22...Rc1 23.Qc3 (23.Qc1 ef5 Eliminates the defender f5) 23...Nd5 24.Qb3 (24.cd5 bc3) 24...Re1?? (better 24...Na6 25.cd5 ef5 26.dc6 Bc6 27.Bg7 Kg7 28.Nf5 Kf8+-) 25.Kd3 (better 25.Ke1 Na6 26.cd5 Kf8 27.Ba6 ef5 28.Qb4 Kg8 29.Qd6+-) 25…Be8?? (25...Be8 26.Ra7 Nf4 27.Kd2 Kf8 28.Ke1 ef5 29.Nf5 c5+-; 25...Na6 26.Bd6 ef5 27.ed5 Bc8+-). RichardSommer (2080) – Maddin_K2 (2025), lichess.org, 2020.

6.c4? Ne4 7.Qf3–+.

6.e5 Nfd7=.

6.e5 Ne4=.

5.c4 ab5 6.ab5 Ra1 7.Ba1 c6 8.e3 d5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 Be7).

5.e3 ab5 6.ab5 Ra1 7.Ba1 d5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7).

5.Nf3 ab5 6.ab5 Ra1 7.Ba1 c6 8.e3 d5 9.bc6 bc6 10.d4 c5 (10...Ba6 11.Ba6 Na6 12.0-0=+) 11.c4 Nbd7 (11...0-0 12.dc5 Bc5 13.Bf6 Qf6 14.cd5=+) 12.cd5 ed5 13.dc5 Nc5 14.Bf6 (14.Nd4 Nce4 15.Bb5 Bd7=) 14...Bf6 15.Nbd2 (15.Bb5!? Bd7 16.Bd7 Qd7 17.0-0=) 15...Qa5 16.Be2 Ne4 17.0-0 (17.Qc2 Bg4 18.Nd4 Bd4 19.ed4-/+) 17...Nd2 (better 17...Nc3 18.Qe1 Ne2 19.Qe2 Ba6-+) 18.Qd2 (18.Nd2 0-0=) 18...Qd2 19.Nd2 0-0 20.Bb5 Be6 21.g3 Rb8 22.Bd3 Rb2 23.Nf3 h6 (23...g5 24.Rb1 Ra2 25.h4 gh4 26.gh4=+) 24.Ba6 (24.Rb1!?=) 24...Ra2 25.Bd3 Bh3 (25...g5 26.Rd1=+) 26.Re1 (26.Rd1 g5=+) 26...g6 (26...g5 27.Rd1=+) 27.Bf1 Bg4 28.Bg2 Kg7 29.Nh4 (29.h3 Be6=+) 29...h5 (29...d4 30.h3 Be2 31.Bd5-/+) 30.Nf3 (30.Bd5 Rd2 31.Bc6 Bh4 32.gh4 Bh3=) 30...Be6 (30...g5 31.h3 Be6 32.Rd1=+) 31.Rd1 Bg4 32.Re1 h4 (32...g5 33.Rd1=+) 33.Kf1 (better 33.Nh4!? d4 34.Nf3=) 33...h3-/+ 34.Bh1 Be7 (34...Bc3!? 35.Rc1 Bb2-/+) 35.Ng1 Bb4 (better 35...Be6 36.Bf3 Bc5=+) 36.Bf3?? (better 36.Rb1 Be6 37.Rb4 Ra1 38.Ke2 Rg1 39.Bf3=) 36...Bf3 (36...Be1!? 37.Ke1 Ra1 38.Kd2-+) 37.Nf3 Be1 38.Ke1 Kf6 39.Nd2 Ke6 40.Ke2 Ra1 41.Kf3?! (41.Nf3-+) 41...Rh1 42.Nf1 (42.Nb3-+) 42...Rf1 43.Ke2 (43.g4-+) 43...Rh1 44.Kf3 Rh2 45.g4 Rh1 (45...Rg2 46.g5 Rg5 47.Ke2 h2 48.Kd2 h1Q 49.e4 Qf3 50.ed5 Rd5 51.Kc2 Qd3 52.Kb2 Rb5 53.Ka2 Qc4 54.Ka3 Qb3) 46.e4 (46.Kg3 g5 47.f3 Rf1-+) 46...h2 (better 46...Rg1 47.ed5 Kd5 48.Ke3 h2 49.Kd2 h1Q 50.g5 Qf3 51.Kc2 Kc4 52.Kd2 Qf2) 47.e5 (47.ed5 Kd5 48.Kg2 Rg1 49.Kh2 Rg4 50.f3-+) 47...Rg1 48.Ke2 h1Q 49.f3 (49.Kd3 Qf3 50.Kc2 d4 51.Kb2 Qc3 52.Ka2 Ra1) 49...Re1 (49...Rg2 50.Ke3 Qe1 51.Kd4 Qb4 52.Kd3 Qd2) 50.Kd3 Qf1 (50...Qf3 51.Kd2 Re2 52.Kc1 Qf1) 51.Kc3 Qe2 52.Kb4 (52.f4 Qe3 53.Kc2 Re2 54.Kd1 Qd2) 52...Rc1 (52...Qb2 53.Kc5 Rc1) 53.Ka5 (53.Kb3 Qd3 54.Kb4 Rb1 55.Kc5 Qc3) 53...Qc2 (53...Rb1 54.f4 Qb5) 54.Ka6 (54.f4 Ra1 55.Kb6 Rb1 56.Ka5 Qa2) 54...Qc5 (54...Qb3 55.f4 Ra1) 55.Kb7 (55.f4 Ra1 56.Kb7 Rb1 57.Ka6 Qb6) 55...Rb1 56.Ka8 (56.Ka6 Qb6) 56…Qa3 (56...Qa5) 0-1. BitChess (2350) - Tijdverspilling (2500), Rated Bullet game, lichess.org, 2016.

5.c4 a5 6.e3 0-0 7.Nf3 Bc5 (7...d5 8.Bf6 Bf6 9.d4=) 8.Be2 d5 9.0-0 c6 10.d4 Be7 11.Nbd2 Bb7 12.Rc1 c5 (12...dc4 13.Bc4 cb5 14.Bb5+=) 13.cd5 ed5 (13...Nd5!? 14.dc5 Bc5+=) 14.dc5+- bc5 (14...Bc5 15.Nb3 Bd6 16.Nbd4+-) 15.Nb3 (15.Bf6!? Bf6 16.Rc5+-) 15...c4 16.Nbd4 Ne4 17.Ne5 (17.Qc2 Qb6+-) 17...f6 (17...Bd6 18.f4=) 18.Ne6 (better 18.Nef3 Qb6 19.Nd2+=) 18...Qe8? (better 18...Qd6 19.Nf8 fe5 20.Nh7 Kh7=) 19.Nc4! Nd7 (19...dc4 20.Bc4) 20.Nc7 (20.Nf8 Bf8 21.Nd2 Ndc5 22.Ne4 de4+-) 20...Qg6 21.Nd5 Ne5 (21...Bd8+-) 22.Ne7 Kh8 23.Ng6 hg6 24.Ne5 fe5 25.Be5 (25.Qd7 Nf6 26.Qb7 Rad8+-) 25...Ng5 26.Rc7 Be4 27.Bg7 Kg8 28.Bf8 Kf8 29.Qd6 Kg8 30.Bc4 (30.Qe7 Nh3 31.gh3 Rb8 32.Qg7) 30...Kh8 (30...Nf7 31.Bf7 Kh8 32.Qf6 Kh7 33.Bg6 Kg8 34.Qg7) 31.Qf6 (31.Qe5) 1–0. BeepBeepImAJeep – leonid_2804, lichess.org, 2017.

5.c4 Bb7 6.e3 a6 7.Nc3=+.

5.c4 Bb7 6.e3 d5 7.Nf3 (7.cd5 ed5 8.a5 ba5=+) 7...dc4 (7...0-0 8.d4=+) 8.Bc4= Nbd7 9.Be2 (9.0-0 a6=) 9...Nc5 (9...0-0 10.Qc2=) 10.0-0 Ncd7 11.d4 c6 12.Nbd2 cb5 (12...Rc8 13.Bd3=) 13.ab5+= Qc7 (13...0-0 14.Bd3+=) 14.Rc1 (14.Qa4 0-0+-) 14...Qd8+= 15.Nc4 Rc8 (15...a6 16.Nce5 Ne5 17.de5+=) 16.Nfe5 (16.Qa4 Rc7+-) 16...Ne5 (16...a6 17.ba6 Ba6 18.Qa4+-) 17.Ne5 (17.de5 Ne4 18.f3+-) 17...Bb4 (17...Rc1!? 18.Qc1 Bd6+=) 18.Rc8 Qc8 19.Bf3 (19.Qa4 Bd6+-) 19...Bf3 (19...0-0!?+-) 20.Qf3+- (20.gf3?! a5=; 20.Nf3?! Qd7 21.Qb3 Bd6+=) 20...Bd6 21.Rc1 Threatening mate... how? 21...Qb8 22.Nc6 Qb7 23.Ra1 0-0? (better 23...a5 24.ba6 Qa8+-) 24.Ra7 Qc8 25.g3 (better 25.e4 Kh8 26.e5+-) 25...Rd8?? (25...Nd5+-) 26.Nd8 Qd8 (26...Qc2 27.Qb7 Qb1 28.Kg2 Qe4 29.Qe4 Ne4 30.Ra8+-) 27.Ra8 Bb8 (27...Qf8+-) 28.Qb7 Nd7 29.Qd7! Qf8 (29...Qd7 Theme: Deflection from b8 30.Rb8 A classical mating theme) 30.Qb7 (30.Ba3 Bd6 31.Rf8 Bf8 32.Qd8 h6 33.Qf8 Kh7 34.Qf7 e5 35.Bf8 ed4 36.Qg7) 30...Bd6 31.Rf8 Bf8 32.Qc8 g6 33.Ba3 Kg7 (33...h6 34.Qf8 Kh7 35.Qf7 Kh8 36.Bd6 g5 37.Be5) 34.Qf8 Kf6 35.Qh8 (35.Be7 Kf5 36.f3 h6 37.Qf7) 35...Kf5 (35...Kg5 36.h3 f6 37.e4 f5 38.f4 Kh6 39.Bf8 Kh5 40.Qh7) 36.Qe5 Kg4 37.Qf4 Kh5 38.Qh4 1–0. BeepBeepImAJeep (2535) – Jaamiesen (1740), lichess.org, 2015.

5.c4 Bb7 6.e3 d6 7.Nf3 Nbd7 8.Be2 0-0 9.0-0 c6 10.d4 cb5 11.cb5 Rc8 12.Nbd2 Qc7 13.h3 (13.Rc1 Qb8=) 13...Qc2 14.Ba3 Qd1 (14...Qg6 15.Qb1=) 15.Rfd1 Rfe8 (15...Bd5 16.Ne5=) 16.Bd3 (16.Rdc1+=) 16...d5 (better 16...Rc3!? 17.Ne1 e5=) 17.Be7+- White gets the initiative 17...Re7 18.Rac1 (18.Rdc1 Ree8+-) 18...Ree8+= 19.Nb3 Ne4 20.Be4 de4 21.Nfd2 f5 (21...Bd5 22.f3 Nf6 23.Kf2=) 22.Nc4 Nf6 (22...Bd5 23.Nbd2+=) 23.Nd6+- Rc1 24.Rc1 Rb8 (24...Re7 25.Nd2+-) 25.Nb7 (25.Rc7 Bd5 26.Nd2 Ra8+-) 25...Rb7+= 26.Rc8 Kf7 27.Nd2 Nd5 28.Nc4 Nc3?? (better 28...Kf6+=) 29.Nd6+- Kf6 30.Nb7 Na4 31.Nd6 (31.Rc6 Kf7+-) 31...g5 (31...Ke7 32.Nc4+-) 32.Rc7 a5 (32...h5+-) 33.ba6 b5 34.Nb5 (34.Rb7 e5 35.a7 ed4 36.a8Q Nc3 37.Qd8 Ke6 38.Nf7 Ne2 39.Kh2 f4 40.Qd6 Kf5 41.Rb5) 34...Nb6 35.a7 e5 36.Rc6 Ke7 (36...Kg7 37.Rb6 Kf8 38.Rb7 ed4 39.a8Q) 37.Rb6 (37.Rb6 Kf8 38.Rb7 ed4 39.a8Q) 1–0. BeepBeepImAJeep (2620) – MisaSoko (1880), lichess.org, 2017.

5.e3 Bb7 6.c4 0-0 7.Nf3 d5 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Be7 7.Be2 0-0 8.a4).

5.e3 Bb7 6.c4 c6 7.Nf3 cb5 (7...0-0 8.Be2=) 8.cb5 d5 (8...a6 9.Be2=) 9.Be2 Ne4 10.0-0 Bf6 11.d4 Nd7 12.Nbd2 0-0 13.Ne4 de4 14.Nd2 e5 15.Nc4 ed4 16.Bd4 Bd4 17.Qd4 Qf6?? (better 17...Nc5 18.Qe5 Re8=) 18.Qd7+- Rab8 19.Qd6 (19.Rad1 Rfd8 20.Qc7 Rdc8+-) 19...Qd6 (19...Qh4 20.a5 Rfd8 21.Qe5+-) 20.Nd6 Rfd8 21.Nb7 (better 21.Rfd1!? Rd7+-) 21...Rb7 22.Rfd1 Rbd7 23.Rd7 Rd7 24.Kf1 Kf8 25.Ke1 Ke7 26.Rc1 Rc7 (26...Ke6+-) 27.Rc7 Kd6 1–0. BeepBeepImAJeep (2630) – MultanenJimi (2000), lichess.org, 2017.

5.e3 Bb7 6.c4 d6 7.Nf3 Nbd7 8.Be2 0-0 9.0-0 c5 10.d4 Qc7 11.Nbd2 Rac8 12.Rc1 Rfe8 13.h3 (13.Bd3 Ra8=) 13...Bf8 (13...Red8 14.Bd3=) 14.dc5= dc5 15.Nb3 (15.a5 Rcd8=) 15...g6 (15...Rcd8 16.Qe1=) 16.Qc2 Bg7 17.Rcd1 Ne4 (17...Rcd8!?=) 18.Bg7+= Kg7 19.Nfd2 Nef6 20.Bf3 (20.a5 ba5 21.Ra1 a6+=) 20...Bf3 21.Nf3 e5 22.Nfd2 e4 (22...Ra8 23.Ne4=) 23.Qc3 (23.a5 Rcd8+=) 23...Ne5 24.Nb1 Nd3 (24...Rcd8 25.a5=) 25.N3d2+= Rcd8 (better 25...Nb4!?+=) 26.Ne4!+- Qe7?? (26...Re4 27.Rd3) 27.Nf6+- (27.Rd3?! Rd3 28.Qd3 Rd8+-) 27...Ne5 (27...Qf6 28.Rd3 Qc3 29.Rc3 h6+-) 28.Ne8 Re8 29.Rd5 (better 29.f4 Qc7+-) 29...f6 30.Nd2 Nd7 (30...a6 31.Rb1 a5 32.Rd1+-) 31.Nf3 Nf8 32.Rfd1 Ne6 (32...Qc7+-) 33.Rd7 Ng5 34.Re7 Re7 35.Ng5 (35.Ng5 a6 36.Rd6 Kg8 37.Qf6 Rd7 38.Rd7 ab5 39.Qd8) 1–0. BeepBeepImAJeep (2550) – President_Kitten (1925), lichess.org, 2016.

5.e3 Bb7 6.Nf3 a6=.

5.e3 d5 6.c4 (6.Nf3 0-0=) 6...dc4 (6...a6 7.Nc3=+) 7.Nf3 Bb7 8.Bc4 0-0 9.0-0 Re8 10.d4 Bd5 (10...a6 11.Nc3=) 11.Nbd2 Bc4 12.Nc4 Nd5 (12...a6 13.Nce5+=) 13.Nce5 (13.e4 Nb4+-) 13...Nd7 (13...f6!? 14.Nd3 c6+=) 14.Nc6+- Qc8 15.Rc1 Nb8 16.Ne7 Re7 17.Ne5 f6 (17...a6 18.e4 Nf6 19.Qf3+-) 18.Nc6 (18.Nc4 Qd8+-) 18...Nc6 19.Rc6 Qe8 (19...Rf7 20.Qb3+-) 20.Ba3 Rd7 21.Qc2 (21.e4 Nf4 22.Qg4 e5 23.Rf6 h5+-) 21...Qg6 22.Qg6 hg6 23.Rfc1 (better 23.Bc1+=) 23...Rc8? (better 23...a6!? 24.Ra1 ab5 25.ab5 Ra5+=) 24.g3 (24.Re6 Ra8+-) 24...f5 (24...Kf7 25.h4+-) 25.Kf1 (25.Re6!? Ra8+-) 25...Kf7+- 26.Ke2 (26.Bd6+-) 26...Kf6 (26...g5 27.h3+-) 27.Kd3 (27.f3!?+-) 27...Kg5? (better 27...a6 28.f3 ab5+=) 28.f3 (28.f3 Kf6 29.e4+-; 28.Re6!? Rh8 29.h4 Kg4 30.Rg6 Kf3+-) 1–0. BeepBeepImAJeep (2735) – ZeJ (1740), TwoDutchIMs Arena, 2017.

5.e3 d6 6.c4 c6 7.Nf3 cb5 (7...a6 8.Be2=) 8.cb5 Kf8 (8...a6!?=) 9.Be2+= g6 10.0-0 Kg7 11.d4 Rf8 12.Nbd2 Kg8 13.Rc1 (better 13.Qc2+-) 13...e5? (better 13...a6+=) 14.de5+- de5 15.Be5 Nbd7 16.Bb2 Nc5 17.Ne5 Be6 (17...Bb7 18.Bd4+-) 18.Nc6 Qc7 19.Be5 Qd7? (19...Qb7 20.a5+- (20.Ne7?! Qe7 21.Bd4 Rac8+-)) 20.Nf3 (better 20.Ne4 Nd5 21.Nc5 Bc5 22.e4+-) 20...Qd1?? (20...Nd5+-) 21.Ne7 (21.Bd1?! Nd5+-) 21...Kg7 22.Rfd1 Rfe8 23.Nc6 Rac8 (23...h6 24.Nd2+-) 24.h3 (better 24.Ng5 h6 25.Ne6 Re6+-) 24...Bd7 (24...Na4 25.Rd6 Nc5 26.Rc5 bc5 27.Ng5+-) 25.Nfd4 (better 25.Rc5!? bc5 26.Bf6 Kf6 27.Rd7 a6+-) 25...Re5 (25...Na4 26.Nf3 Be6 27.Rd6+-) 26.Ne5 Be6 (26...Re8 27.Nd7 Nfd7 28.Nc6+-) 27.Ne6 Ne6 (27...fe6 28.a5 Rf8+-) 28.Rc8 Ng8 29.Rd7 Kh6 30.f4 Nf6 31.Nf7 (31.Rf7 Ng5 32.Rf6 Nh3 33.gh3 Kg7 34.Rf7 Kh6 35.Ng4 Kh5 36.Rh7) 31...Kg7 32.Ra7 Nf8 33.Ng5 (33.Ne5 N8d7 34.Nd7 Ne8 35.Ne5 Kf6 36.Rc6 Nd6 37.Rd6 Kf5 38.Bd3) 33...Kh6 (33...N6d7 34.Bg4 h6 35.Ne6 Kf6 36.Nf8 h5 37.Nd7 Ke7 38.Nb6 Kd6 39.Rd7) 34.Rf8 Nd5 (34...Nd7 35.Rg8 Ne5 36.Rh7) 35.Rh7 1–0. BeepBeepImAJeep (2530) – Minarima (1735), lichess.org, 2015.

5.e4 Bb7 6.e5 Ne4 7.d3+/–.

5.e4 Ne4 6.Bg7 Rg8 7.Bb2 Bb7 8.Nf3 (8.a5 ba5 9.Qh5 Nf6=+) 8...Bf6 (8...a6 9.d3 Bf6 10.c3=+) 9.d4= d6 (9...a6 10.a5=+) 10.g3 (10.Rg1 c5=) 10...c5=+ 11.Bg2 cd4 (11...a6 12.Nbd2=+) 12.0-0 (12.Nd4 Ng3 13.Bb7 Nh1+=) 12...Nc5 (12...e5 13.Re1 d5 14.Nfd2=+) 13.Nd4= Bg2 14.Kg2 Nbd7 15.Re1 (15.Nc6 Qc7 16.Bf6 Nf6=) 15...Rc8 (15...a6 16.Nc6 Qc7 17.Bf6 Nf6 18.Nc3=) 16.a5 ba5 (16...Ne5 17.Bc3=) 17.Nc6 Qc7 (17...Rc6 18.bc6 Bb2 19.cd7 Kd7 20.Ra2=) 18.Bf6 Nf6 19.Ra5 a6 20.c4 Nfe4 21.Re4 ab5 22.cb5 Ne4=+ 23.Qd4 d5 24.Ra7= Qf4 25.b6 e5 26.Ne5 Ng3 27.Qf4 Ne2 28.Qg3 Rg3 29.hg3 Rc1 30.Na3 Rg1 31.Kh2 Rf1 32.Rf7 Nd4 33.b7 Nc6 34.Nb5 Nb8 35.Nc7 Kd8 36.Nd5 (36...Rf2 37.Rf2 Ke8 38.Rf7 h6 39.Re7 Kf8 40.Ng6 Kg8 41.Nf6) 1–0. Van Esbroeck,Jeff – Posey,Robert (1795), EM/C/A019 ICCF Email, 1997.

5.Nf3 0-0=.

5.e3 b6 6.c3 Bb7 7.c4 d5 8.Nf3 dc4 (8...0-0 9.Bd3=+) 9.Bc4= 0-0 10.0-0 Nbd7 11.d4 cd4 12.Nd4 Rc8 13.Be2 (13.Nd2 Bd6=) 13...Nc5 14.Nd2 Qc7 15.Bf3 Rfd8 16.Bb7 Qb7 17.Nc6 Rd7 (17...Rd6 18.Qc2=) 18.Qe2 (better 18.Ne7 Re7 19.Bf6 gf6 20.Qg4 Kf8 21.Qh4+-) 18...Nd3?? (18...Nd5 19.a5=) 19.Bd4 (19.Ne7 Re7 20.Bf6 gf6 21.Qd3 Rd7+-) 19...Nb4?? (19...Nc5 20.Ne7 Re7 21.Bf6 gf6 22.Rfd1+=) 20.Nb4 (better 20.Ne7 Re7 21.Bf6 gf6 22.Qg4 Kh8 23.Qb4+-) 20...Bb4= 21.Nf3 (21.Bf6 Rd2 22.Qg4 Bf8=) 21...Rdc7 (21...Nd5 22.Rfd1=) 22.Bf6+= gf6 23.Nd4 Bc3 24.Rad1 (24.Rac1 Bd4 25.Rc7 Qc7 26.Qg4 Kh8 27.Qd4 Qe5+=) 24...Kf8 (24...Qe4!?+=) 25.Nc6+- Rd7? (better 25...Rc6!? 26.bc6 Qc6+-) 26.Qc2 (26.Rd7!? Qd7 27.Rd1 Qc7+-) 26...Be5 27.Qh7 (27.Rd7 Qd7 28.Rd1 Qc7 29.Qh7 f5+-) 27...Rc6 28.bc6 Qc6 29.Qh8 (29.Rd7 Qd7 30.Qc2 Ke7+-) 29...Ke7 30.a5 (30.Rc1 Bc3+-) 30...ba5 31.Qh4 Bc3 32.Rc1 Rc7 (32...a4 33.Rc2+-) 33.Rc2 (33.Rfd1 Qa6+-) 33...a4 (33...Qd7 34.Rfc1+-) 34.Rfc1 a3?? (34...Qb6+-) 35.Rc3 Qc3 36.Rc3 (36.Rc3 Rc3 37.Qb4 Ke8 38.Qc3+-) 1–0. BeepBeepImAJeep (2695) – bogdanb (2420), lichess.org, 2015.

5.e3 d6 6.c4 e5 7.Nc3 Be6 (7...0-0 8.Nf3=+) 8.d3 (8.Nf3 a6=) 8...0-0 9.e4 (9.Nf3 Re8=) 9...Nbd7 10.Nf3 a5 11.Be2 b6 12.0-0 Ne8 13.Nd2 f5 14.ef5 Bf5 15.Nd5 Bg5 16.Ne4 Bh6 (16...Be6 17.Bg4 Bd5 18.cd5=) 17.Bg4 Bg4 18.Qg4 Ndf6 (18...Rf7+-) 19.Nef6 (better 19.Ndf6!? Nf6 20.Qe6 Kh8 21.Nd6+-) 19...Nf6= 20.Qf3 Nd5 21.Qd5 Kh8 22.Rae1 Rf5 (22...Qf6 23.Re4=) 23.Re4 Qf8 24.f3 Rd8 25.Rfe1 Bf4 26.Bc1 Bc1 27.Rc1 h6 28.Rce1 Qf6 29.Rg4 (29.Qb7 d5 30.cd5 Kh7+=) 29...Rf8 (better 29...e4!? 30.Qc6 ef3 31.gf3 Rf3–/+) 30.Qe4 (30.Qc6 h5 31.Rg3 Qh6+=) 30...Rf4 31.Rf4 ef4 (31...Qf4 32.Rd1=) 32.Qe6 (32.Kf1!?+=) 32...Qd4=+ 33.Kh1 Qf2 (33...Qd3 34.Qe4 Qe4 35.Re4= (worse 35.fe4 g5–/+)) 34.Qe2 Qd4 (34...Qe2 35.Re2 Kg8 36.Kg1=) 35.h3 Qc3 36.Rd1 Rf6 37.Qd2 (37.Qe8 Kh7=) 37...Qd4 (37...Qd2!? 38.Rd2 Re6=+) 38.Re1= Kh7 39.Re4 (39.Kh2 d5 40.Qc2 Rd6=) 39...Qa1 40.Kh2 Rg6 (40...Qa4 41.Rf4 Qa1 42.Re4=) 41.Rf4 (41.d4!? Qb1 42.dc5 (42.Qf4?? Qb2 43.Qg4 Rg4 44.hg4 cd4–+; 42.Rf4?! Re6+-) 42...dc5 43.Rf4+- (worse 43.Qf4 Qc2 44.Qg3 Rg3 45.Kg3 Qa4–+)) 41...Qa4= 42.Rg4 (42.Qe2!? Qa1 43.d4 cd4 44.Qd3=) 42...Rg4=+ 43.hg4 Qa1 44.f4 a4 (better 44...Qd4 45.g3 d5–/+) 45.Qe3? (45.Qe2 Qf6 46.Qe4 Qg6–/+) 45...a3?? (better 45...Qd4 46.Qe2 Qf4 47.g3 Qd4–+) 46.Qe4= Kh8 47.g5 Do you see the mate threat? 47...hg5 48.fg5?? (better 48.Qe8 Kh7 49.Qh5 Kg8 50.Qe8 Kh7 51.Qh5 Kg8 52.Qe8 Kh7=) 48...Qe5–+ 49.Qe5 de5 50.d4 a2 (better 50...ed4 51.Kg3–+) 51.de5 a1Q 52.e6 Qe5 53.Kh3 Qe6 54.Kh4 Qe5 55.g4 Qf4 (55...Qh2) 56.g6 Qh2 (56...Qf2 57.Kh3 Kg8 58.g5 Qg1 59.Kh4 Qg2 60.Kh5 Qh3) 57.Kg5–+ Qe5 (better 57...Qd2 58.Kf5 Qd3 59.Ke5 Qc4–+) 58.Kh4 Qh2 (58...Qe3 59.g5 Qg1 60.Kh5 Qg2 61.Kh4 Kg8 62.Kh5 Qh3) 59.Kg5 Qe5 (59...Qf2 60.Kh5 Qf6 61.g5 Qf3 62.Kh4 Qg2 63.Kh5 Qh3) 60.Kh4= Qh2 (60...Qe3 61.g5 Qg1 62.Kh3 Kg8 63.Kh4 Qg2 64.Kh5 Qh3) ½–½. BeepBeepImAJeep (2665) – ng99 (2210), lichess.org, 2016.

5.Na3 0-0 6.e3 c5 7.Nf3 Qa5 8.c4 Nbd7 9.Be2 Nb6?? 10.cd5?? Nfd5 11.Nc4 Nc4 12.Bc4 Qb4 13.Qb3 b6 14.Qb4 cb4 15.Bd5 ed5 16.Nd4 Be6 17.0-0 Bc5 18.Nc6 Bd7 19.d4 Bc6 20.dc5 Bd7 21.c6+- Be6 22.Bd4 a6 23.ba6 Ra6+/– 24.Rfb1 Rc8 25.Rb4 Rc6 26.Rab1 Bf5 27.Re1 h6 28.h3 Bc2 29.Rc1 Ra4?? 30.Ra4?? Ba4= 31.Rc6 Bc6 32.Bb6 Kf8 33.Kf1 Ke7 34.Ke2 Ke6 35.Kd3 Ke5 36.f4 Kf5 37.g4 Ke6 38.Kd4 Ba4 39.e4 de4 40.Ke4 Bc2 41.Ke3 g6 42.Bd4 Kd5 43.Bg7 h5 44.gh5 gh5 45.Kf3 Bf5 46.Kg3 Ke4 47.Bh6 Bg6 48.Kh4 Ke3?? 49.Kg5 Kf3= 50.h4 Kg3 51.Bg7 Kf3 52.Bf6 Kg3 53.Be5 Kf3 54.Bc7 Kg3?? 55.Bd8 Kf3= 56.f5 Bf5?? 57.Kf5+- Kg3 58.Kg5 Kf3 59.Kh5 Kf4 60.Kh6 Kf5 61.Kg7 Kg4 62.Kh6 Kf5 63.h5 Kg4 64.Bg5 Kf5 65.Bc1 Kg4 66.Bg5 Kf5 67.Bd8 Kg4 68.Kg7 Kh5= 69.Kf7 ½–½. poganinbezdom (1660) – elsh1403, kurnik, 2011.

5.c4 c6 6.e3 0-0 7.Nf3 cb5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 cb5).

5.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.a4).

5.h4 c5 6.Nf3 b6 7.Ra3 Bb7 8.h5 Nbd7 9.h6 g6 10.e3 c4 11.Ne5? Qc7 12.Nd7=+ Qd7 13.Rh3 Rg8 14.d3 Rc8 15.dc4 dc4 16.Qd7 Nd7 17.Rc3 Bf6 18.Na3 Bc3 19.Bc3 f6 20.Nc4 Ke7 21.Bb4 Nc5 22.a5 Bd5 23.ab6 Bc4 24.Bc4 ab6 25.e4 e5?? 26.Ra3?? Rgd8= 27.Ra7 Rd7 28.Ra6 Rd6 29.Bd5 Kd7 30.Bc6 Ke6? 31.Bd5 Rd5?? 32.ed5+- Kd5 33.Rb6 Kc4? 34.c3 Ne4?? 35.f3 Nc3? 36.Bc3 Kc3 37.Rf6 Kd3 38.Rf7 Ke3 39.Kd1 Kf2? 40.Rh7 Kg2 41.Rg7 Kf3 42.h7 Rh8 43.b6 e4 44.b7 e3 45.b8Q Rb8= 46.Rg8?? e2–+ 47.Ke1 Rb1 48.Kd2 (48.Kd2 e1Q 49.Kd3 Qe4 50.Kc3 Qb4 51.Kd3 Rd1 52.Kc2 Rd2 53.Kc1 Qb2). xtom – piolini (1645), kurnik, 2011.

5.c4 0-0 6.e3 c6 7.Nf3 Nbd7 8.Be2 Nc5 (8...Rb8 9.d4=) 9.0-0 a6 10.d4 Nce4 11.Nc3 Nc3 12.Bc3 d5 (12...ab5 13.ab5 Ra1 14.Qa1+=) 13.c5+= ab5 14.ab5 Ra1 15.Qa1 Bd7 16.Ne5 Ne4 17.Nd7 (17.Ba5 Qe8+-) 17...Qd7+= 18.Rb1 Nc3 (18...e5 19.Bd3=) 19.Qc3+- cb5 20.Rb5 e5 (20...Ra8 21.Ra5 Ra5 22.Qa5+-) 21.Qb3 (21.Qb2!?+-) 21...ed4+= 22.ed4 Qe6 (22...Bf6 23.Qb2 Qe6 24.Rb7 Bd4 25.Qd4 Qe2 26.h3+-) 23.Bf1 (23.Qd3 Bf6 24.Rb6 Qc8+=) 23...Bf6 24.Qe3 Qf5 (better 24...Qc8!?+=) 25.Rb7+- Qc2 (25...Qg4 26.Rb4+-) 26.h3 (26.Qf4 h6+-) 26...Qd1 (26...Qa4 27.Rb5+-) 27.Rb4 g6 28.Qd3 Qh5 (28...Qa1 29.Qf3 Bd4 30.Qd5+-) 29.Rb6 Bg7 30.Be2 Qh4 31.Bf3 (better 31.Bg4!?+-) 31...Qd4 (31...Bd4 32.Qc2=) 32.Qd4+= Bd4 33.Rb5 (better 33.Bd5 Bc5 34.Rb5+=) 33...Rd8? (better 33...Rc8=) 34.c6+- Ba7?? (34...Be5 35.Bd5 Kf8 36.Kf1+-) 35.Bd5 (35.c7 Rc8 36.Rb7 Kf8 37.Ra7 Ke7 38.Bd5 Kd6 39.Bf7 Rc7 40.Rc7 Kc7 41.Bg6 hg6+-) 35...Bb8 (35...Kg7 36.Bb3 Rb8 37.Rb7 Rb7 38.cb7+-) 36.g3 (36.Rb7!? Be5 37.Bf7 Kf8+-) 36...Rc8 37.Kg2 Bd6 38.Rb7 Rc7 39.Rb8 Kg7 40.Rd8 (40.Rd8 Bc5 41.Rd7+-) 1–0. BeepBeepImAJeep (2570) – marlinchess (1760), lichess.org, 2017.

5.c4 c6 6.e3 Nbd7 (6...Bd7 7.d4=) 7.Nf3= c5 (7...e5 8.d4=) 8.Be2 b6 9.0-0 Bb7 10.d4 cd4 11.Nd4 0-0 12.Nd2 Qc7 13.Rc1 (13.Bf3 Bf3 14.N2f3 Ne4=) 13...Nc5=+ 14.Bf3 Rac8 (14...Bf3 15.N2f3 a6 16.ba6=) 15.Bb7= Qb7 16.Nc6 Rc6 17.bc6 Qc6 18.Ba3 (18.Ra1!?+=) 18...Na4=+ 19.Nf3 Nc5 20.Nd4 (20.Bc5 dc5 21.Ra1 Ra8=) 20...Qc7 (20...Qe4 21.Ra1=+) 21.Nb5= Qb8 22.Bc5 dc5 23.Ra1 a5 24.Qf3 Re8 25.Rfb1 Nd7 26.h3 Ne5 27.Qe2 Bf6 28.Ra3 Nc6 29.Rd3 Nb4 30.Rd6 Be5 31.Rd7 Rd8 32.Qd2 The mate threat is Rxd8 32...Rd7 33.Qd7 g6 34.Rd1 Bf6? (better 34...Bh2!? 35.Kf1 Kg7=) 35.Nd6+- The mate threat is Qxf7 35...Qf8 36.Ne8 (36.Qb7 Bd8 37.Nf7 Be7 38.Nh6 Kg7+-) 36...Bc3? (36...Be7!?+=) 37.Qb5 (better 37.Qc8 h5 38.Rd8+-) 37...Bg7?? (better 37...a4 38.Qa4 Qe7+-) 38.Rd8+- (38.Ng7?! Kg7 39.Qb6 a4+-) 38...Bf6 (38...Be5 39.Qd7 a4+-) 39.Nf6 (39.Nf6 Kg7 40.Rf8+-) 1–0. BeepBeepImAJeep (2630) – CuriousKnight (1925), lichess.org, 2017.

5.c4 Bd7 6.e3 c6 7.Nf3 d5 8.Be2 dc4 9.Bc4 0-0 10.Nc3 c5 (10...Bd6 11.0-0=) 11.Be2 (11.0-0 a6+=) 11...a6 (11...Re8 12.0-0+=) 12.0-0 ab5 13.ab5 Ra1 14.Qa1 Bd6 15.d4 (15.Na4 Qe7+=) 15...cd4= 16.Nd4 Be8 (16...e5 17.Nf3=) 17.h3 (17.Qa7 b6+-) 17...Nbd7 18.Rd1 e5? (better 18...Qc7!?+=) 19.Nf5+- Bc5 (19...Bb4 20.Na2 Bc5 21.Be5+-) 20.Na4 b6? (better 20...Bb4 21.Be5 Qa5+-) 21.Nc5 bc5 22.Be5 Qe7 (22...h5+-) 23.Ne7 Kh8 24.Rd7! (24.Rd7 c4 25.Bf6 Rg8 26.Rd8 h6 27.Re8 Re8 28.Bg7 Kh7 29.Qf6 Re7 30.Qh6 Kg8 31.Qh8) 1–0. BeepBeepImAJeep (2470) – WingKnight, lichess.org, 2018.

5.e3 0-0 6.f4 Nfd7 (6...d5 7.Nf3=) 7.Nf3= Re8 8.Nc3 Nf8 9.Bd3 a6 10.0-0 ab5 11.ab5 Ra1 12.Qa1 Nbd7 13.Ne4 Nf6 (13...f6 14.Be2+=) 14.Nf6 Bf6 15.Bf6 Qf6 16.Qf6 gf6 17.Ra1 Bd7 (17...e5 18.fe5 fe5 19.Be4+=) 18.Ra7 Rb8 19.Nd4 Bc8 20.Be4 Nd7 21.c4 f5 22.Bf3 Nb6 23.d3 Ra8 24.Ra8 Na8 25.Kf2 Nb6 26.Ke2 (26.Nb3 Na4+/-) 26...Kg7 (26...e5 27.Nc2+=) 27.Kd2 Kf6 28.Kc3 Nd7 29.Kb4 (29.Ne2 Ke7+/-) 29...Nc5+= 30.Be2 b6 31.g3 Bb7 32.Kc3 Na4 33.Kd2 Nc5 34.Nc2 (34.Bf3 Bf3 35.Nf3 h6+/-) 34...e5 35.fe5 de5 36.Nb4 Nb3 37.Ke1 (37.Kc2 Nc5+/-) 37...Nc5 38.Kf2 Ke6 39.Ke1 Kd6 (39...Kf6 40.d4 Ne6 41.d5+=) 40.Kd2 Nb3 41.Kc3 Nc5 42.d4 Ne4 43.Kc2 f6 44.Bf3 Ke7 45.Be4 Be4 46.Kc3 Kd6 47.Na6 White prepares the advance c5 47...Bb7 (47...h6+=) 48.Nb4 (48.c5!? bc5 49.dc5 Kd5 50.Kb4+/-) 48...Be4+= 49.Kd2 h6 50.Kc3 Ke6 51.c5 bc5 52.dc5 Kd7 53.Kc4 Ke6 54.b6 cb6 55.cb6 Kd7 (better 55...Kd6!?+=) 56.Kc5+- h5? (56...Bb7 57.Nd5 Ke6 58.Nc7 Kd7 59.Nb5+-) 57.h4 (57.Nd5 Kc8+-) 57...Kc8 (57...Bb7 58.Nd5 Ke6 59.Nc3+-) 58.Nc6 (better 58.Nd5 Bf3 59.Nf6+-) 58...Bc6?? (better 58...Kb7 59.Ne7 f4 60.gf4 ef4 61.ef4 f5+-) 59.Kc6 Kb8 60.Kd6 Kb7 61.Ke6 f4 62.ef4 (62.ef4 e4 63.Kf6-+) 1-0. cabbage9 (2835) - zsolti_83 (2665), Rated Bullet game, lichess.org, 2020.

5.e3 c6 6.c4 cb5 (6...0-0 7.d4=+) 7.cb5 (7.ab5 0-0=) 7...b6 (7...0-0 8.Nf3=+) 8.Nf3= Bb7 9.Nc3 Nbd7 10.Be2 0-0 11.0-0 Nc5 12.d4 Nce4 13.Ne4 Ne4 14.Nd2 Nd2 15.Qd2 Bf6 (15...a6=) 16.Bf3 (better 16.Rfc1!?+=) 16...Bf3=+ 17.gf3 d5 18.Kh1 Rc8 19.f4 Qd6?? (better 19...Qd7=+) 20.Ba3+- Qd7 21.Bf8 Kf8 (21...Rf8 22.Rac1+-) 22.Rac1 g6 23.Rc8 Qc8 24.Rc1 Qd7 25.Qc2 Kg7 (25...Bd8 26.Qc8 Qe7 27.Qb8+-) 26.Qc8 Qe7 (26...Qc8 27.Rc8 Bh4 28.Kg2+-) 27.Qc7 (better 27.Rc7 Qd8 28.Qb7+-) 27...Qa3 28.Qc2 Bh4 29.Kg2 h5 30.Rb1 g5 (30...Qd6+-) 31.fg5 Bg5 32.Qb3 Qe7 33.Rg1 Kh6 34.Qd1 Qf6 35.Qf3 Qg6 36.Kf1?? (better 36.Kh1 h4 37.Rc1+-) 36...Qd3 (36...Qb1 37.Kg2 Qg6 38.Kh1+-) 37.Kg2 (better 37.Qe2 Qb1 38.Qe1 Qd3 39.Kg2 Qe4 40.f3+=) 37...Qg6+- 38.Kh1 Qf6 (38...h4 39.Rc1+-) 39.Qf6 Bf6 40.Kg2 Bh4 41.Rc1 Kg5 (41...Kg7 42.Rc7 Kf8 43.Ra7+-) 42.Rc7 f6 (42...e5 43.de5 Kg6+-) 43.Ra7 e5 44.Rd7 ed4 45.Rd5 Kg6 46.Rd4 Bg5 47.Rd5 (47.a5 ba5 48.b6 f5+-) 47...f5 (47...Be3 48.fe3 Kf7 49.a5+-) 48.f4 (48.a5 ba5 49.b6 Be7+-) 48...Bf6 (48...Bf4 49.ef4 Kf6 50.a5 ba5 51.b6 a4 52.b7 Ke6 53.Re5 Kf6 54.b8Q h4 55.Qd6 Kf7 56.Re7 Kg8 57.Qd8) 49.Kf3 (49.a5 ba5 50.b6 Kf7+-) 49...h4 (49...Bc3 50.Rd6 Kg7 51.Rb6+-) 50.e4 (50.a5!? ba5 51.b6 Kf7+-) 50...Bd8 (50...Bc3 51.Rd6 Kf7 52.Rb6 fe4 53.Ke4+-) 51.Rf5 (better 51.ef5 Kf6 52.Rd8 Ke7+-) 51...Be7 52.h3 (better 52.Re5 Bb4 53.Re6 Kf7 54.Rb6+-) 52...Bc5 (52...Bb4 53.Kg4 Kh7 54.e5+-) 53.Kg4 (53.Rc5 Kf6+-) 53...Kh6 (53...Bb4+-) 54.Rh5 Kg6 55.f5 (55.Rc5 bc5 56.b6 c4 57.f5 Kf6 58.b7 Ke5 59.b8Q Ke4 60.f6 Kd3 61.Qb1 Kd2 62.f7 Ke3 63.f8Q c3 64.Qf4 Ke2 65.Qbf1) 55...Kf6 56.Rh6 (56.e5 Kf7+-) 56...Kg7 57.Re6 Kf7 58.Kh4 Kf8 59.Kg4 Kf7 60.h4 Kf8 61.h5 Kf7 62.Kf3 Kg7 63.Ke2 Kf7 64.Kd3 Kg7 65.Kc4 Kf7 66.a5 Kf8 67.a6 Kf7 (67...Bd4 68.a7 Kf7 69.a8Q Be3 70.Qe8 Kg7 71.Rg6 Kh7 72.Qg8) 68.a7 Be7 (68...Kg8 69.a8Q Bf8 70.Qe8 Kh7 71.Qf7 Bg7 72.h6 Kh8 73.Qg7) 69.a8Q Bc5 (69...Bf8 70.Qe8 Kg7 71.Rg6 Kh7 72.Qf7 Kh8 73.Rg8) 70.Qb7 (70.Qe8 Kg7 71.Rg6 Kh7 72.Qg8) 70...Kg8 71.Qd7 (71.Re8 Bf8 72.e5 Kh8 73.Rf8) 71...Bf8 (71...Ba3 72.Re8 Bf8 73.Qe7 Kh8 74.Rf8) 72.Re8 Kh8 73.Rf8 1–0. BeepBeepImAJeep (2520) – qarakalpatin (1920), lichess.org, 2017.

5.e4 b6 6.e5 Ne8 7.Qf3 c6 8.Bd3 Bb7 9.Nge2 d6 10.Nd4 Qd7 11.Qh3 g6 12.Nf3 de5 13.Ne5+= Qd6 14.Ne4 Qd8?? 15.Ng6!+- fg6 16.Qe6 Rf7 17.Bc4 Nd6 18.Nd6 Qf8 19.Nf7 Qf7 20.Qf7 1–0. gtate (1930) – guerino (2155), net–chess.com, 2006.

5.e4 d5 6.e5 Nfd7 7.d4 c5 8.bc6 bc6 9.Nf3 c5 10.Be2 Nc6 11.0-0 Qb6 12.Rb1 Qa5 13.Re1 Rb8–/+ 14.Ba1 Rb1 15.Nb1 Qa2 16.Nc3 Qa5 17.dc5 Bc5 18.Nd2 Nde5 19.Nb3 Qb4 20.Nc5 Qc5 21.h3 Ng6 22.Bf3 Nd4 23.Na4? Nf3 24.Qf3 Qc2 25.Nc3 Bd7 0–1. mic (2195) – michelleke (2280), net–chess.com, 2008.

5.e4 d6 6.Bc4 b6 7.d4 Nbd7 8.Nf3 e5 9.de5 Ne5 10.Ne5 de5 11.0-0 Bb7 12.Re1 Bb4 13.Bd3 Qe7 14.Re2 Rad8 15.Qf1 c6 16.bc6 Bc6 17.f3?? (17.a3 Ba5+=) 17...Rd7 (better is 17...Bc3 18.Bc3 Qc5 19.Kh1 Qc3–+) 18.Kh1–/+ Rfd8 19.Bc4? (19.f4 Bd6–/+) 19...b5?? (better is 19...Qc5!? 20.Ree1–+) 20.Nb5 Bb5?? (better is 20...a6 21.Nc3 Qc5–+) 21.Bb5+= Rd2 22.Rd2 Rd2 23.Ba4 Qc5 24.Rd1 Qc2?? (better is 24...Rd1 25.Qd1 Qa5+/–) 25.Bc2+- (25.Bc2 Rc2 26.Rd8 Bf8 27.Ba3+-) 1–0. Jokmin,Alex – Vontina,Maria, SN–2009–0-00200, 2009.

5.e4 d6 6.Bc4 c5 7.Bd3 Qc7 8.Nf3 Bd7 9.0-0 b6 (9...d5!? 10.e5 Ng4+=) 10.Qe2+= h6 (10...e5!?+=) 11.e5+/– de5 12.Ne4 Rd8? (better is 12...Nd5 13.Be5 Qd8+/–) 13.Be5 Qc8? (13...Qb7 14.Nf6 gf6+-) 14.Nf6 Bf6 15.Qe4 Nc6 (15...Be5 16.Ne5 Bb5 17.Qh7 Kf8 18.Bb5 a6+-) 16.Qh7 Kf8 17.Bd6 Be7 (17...Ke8 18.Qg8) 18.Qh8 1–0. Trokenheim,Marek (1765) – Vontina,Maria, OP–2012–0-02150, 2012.

5.Nf3 a6 6.a4 ab5 7.ab5 Ra1 8.Qa1 c6 9.Qa7 d5? (better is 9...Qc7+=) 10.Qb8+-. Rooijen Van,Peter (1655) – Vontina,Maria, OP–2009–0-01035, 2009.

5.Nf3 a6 6.a4 c6 7.e3 d5 8.Be2 Bd7 9.0-0 Qe8 10.Ne5 ab5 11.ab5 Ra1 12.Qa1 Bc8 13.f4+/– c5 14.Nf3 b6 15.Ne5 Nbd7 16.Nc6 Bd6 17.Qa7 d4 18.ed4 cd4+/– 19.Na4 e5 20.fe5 Be5 21.Bc4 Ng4 22.h3 Nh2?? 23.Re1 g6 24.Nb6 Bb8 25.Re8 Ba7 1–0. Garfield85 (1715) – kostovist (1610), internet, 2006.

5.a4 a6 6.e3 ab5 7.ab5 Ra1 8.Ba1 c6 9.Nf3 cb5 10.cb5 b6 11.Nc3 d5 12.Be2 Nbd7 13.0-0 Nc5 (13...e5 14.d4 e4 15.Nd2=) 14.d4 Nce4 15.Ne4 Ne4 16.Ne5 Bf6 (16...Bb7 17.f3 Nf6 18.Bc3=) 17.Nc6 Qc7 18.Bd3 Bh4 (18...Be7 19.f3 Nd6 20.Qb1+=) 19.Qc2 (19.Be4 de4 20.Qg4+-) 19...g6? (better 19...f5!?+=) 20.Be4+- de4 21.Qe4 Bb7?? (better 21...Bf6+-) 22.Qh4 Bc6 (22...f6 23.Rc1+-) 23.Rc1 (23.Rc1 Ra8 24.bc6 Qc6 25.Bb2+- (25.Rc6?? Ra1 26.Rc1 Rc1); better 23.d5 f6 24.dc6 Qe7+-) 1–0. BeepBeepImAJeep (2630) – mad_mask (1840), lichess.org, 2015.

5.a4 b6 6.e3 Bb7 7.Nf3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.a4).

5.a4 d5 6.e3 a6 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 c6 10.Be2 cb5 11.cb5 Qa5 12.Nc3 Bd7 Attacks the isolani on b5 13.0-0 Rc8 14.Qb3 Ne4 15.Ne4 (15.Rd1 Qb4 16.Qa2 Bd6=) 15...de4=+ 16.Bc3 Qa3 (16...Rc3 17.Qc3 Qc3 18.dc3 ef3 19.Bf3 Bb5 20.Rb1=) 17.Qa3= Ba3 18.Nd4 Bc5 (18...e5 19.Nc2 Bd6 20.Ra1=) 19.Ra1 e5 (19...Bb6 20.Nb3 Rd8 21.Na5+-) 20.Nb3+- Bd6 21.Na5 b6 22.Nc4 Bc5 23.Ne5 Be6 24.Nc6 (better 24.Bc4 Bc4 25.Nc4+-) 24...Nc6= 25.bc6 Rc6 26.Bb5 Rc8 27.h3 (27.Ra7 h5 28.Ba6 Rd8=) 27...h6 (27...h5 28.Kf1=) 28.Ra7 Rd8 (28...Bd5 29.Be5=) 29.Kf1 (29.Bc6 Bd5 30.Bd5 Rd5=) 29...f6 (29...Bd5 30.Ke2=) 30.Ke1 (30.Ke2 Bd5=) 30...Bf7 (30...Bd5 31.Ke2=) 31.f3+= Bd5 32.f4 (32.fe4 Be4 33.g4 Ra8+=) 32...h5 33.g4 hg4 34.hg4 Bf7 (34...Ra8 35.Ra8 Ba8 36.d4 ed3 37.Kd2=) 35.g5 (35.Bc6!?+-) 35...fg5+= 36.fg5 g6 (36...Rd6 37.Bd7 Kf8 38.Bf5+=) 37.Be2 (37.Bf6!? Rb8 38.Bc6+-) 37...Re8 38.Bg4 (38.Bf6 Bd6+=) 38...Re7 (38...Rb8 39.Be5 Re8 40.Bf6+=) 39.Ra8 Re8 40.Ra6 Be7 (40...Rb8 41.Ra4 Bd5 42.Ra7=) 41.Bd7+= Rd8 42.Ra7 (42.Bc6 Bd5 43.Rb6 Kf7+-) 42...Bg5= 43.Ba4 (better 43.Bc6=) 43...Be7?? (43...Bh4 44.Kd1 g5 45.Bc2=+) 44.Ke2 (better 44.Re7 Bd5 45.Rg7 Kf8 46.Rg6+-) 44...Bc5 (better 44...Bc4 45.Kd1 Kf8–/+) 45.Kf2? (better 45.Bc6 Bc4 46.Ke1=+) 45...Re8?? (45...b5 46.Rf7 Kf7 47.Bb5–+) 46.Kg3?? (better 46.Be8 Be8 47.Bd4+-) 46...Re7?? (better 46...b5 47.Rf7 Bd6 (47...ba4?! 48.Rg7 Kf8 49.Rg6=) 48.Kg4 Kf7 (48...ba4?! 49.Rf6 Bc5 50.Rg6 Kf7 51.Kf5+=) 49.Bb5 Rc8–/+) 47.Ra8+- Be8 48.Be8 (worse 48.Re8 Kf7 49.Re7 Be7+-) 48...Kh7 49.Bb5 (49.Kg4 Bd6 50.Bf6 Kh6 51.Be7 Be7+-) 49...g5 (49...Bd6 50.Kg4 Be5 51.Re8 Re8 52.Be8+-) 50.Be2 (better 50.Kg4!? Kg6+-) 50...Kg6 51.Bg4 (51.Rg8 Kh6+-) 51...Kf7 (51...Bd6 52.Kg2 Be5 53.Rc8+-) 52.Rc8 (better 52.Bf5+-) 52...Re8 (52...Bd6 53.Kf2+-) 53.Rc6 (better 53.Bh5 Ke6 54.Re8 Kd7 55.Re4 Bd6 56.Kg4 Be7+-) 53...Re7 (53...Kf8+-) 54.Rc8 (54.Bh5 Kg8 55.Rc8 Re8 56.Re8 Bf8 57.Bb4 Kg7 58.Bf8 Kf6 59.Ba3 Kf5 60.Bb2 b5 61.Bh8 b4 62.Re5) 54...Re8 55.Bh5 Ke7 56.Re8 Kd6 57.Kg4 Kc6 58.Kg5 Kb5 (58...Kd7 59.Re4 Kc7 60.Rc4+-) 59.Re6 Kc4 60.Kf6 Kd3 61.Kf5 (better 61.Be8 Ke2+-) 61...Kc2 (61...Be3 62.Rd6 Kc2 63.Ke4 Bd2 64.Bd2 b5 65.Bd1 Kb1 66.Rb6 b4 67.Rb4 Ka1 68.Bc3 Ka2 69.Ra4 Kb1 70.Ra1) 62.Re4 (62.Ke4 Kb3+-) 62...b5 63.Bb4 (63.Re5 b4 64.Rc5 bc3 65.dc3 Kd2+-) 63...Bb6 64.Bd6 (better 64.d4 Kd3+-) 64...Be3 (64...Kd2 65.Be8+-) 65.Rb4 (65.de3 Kd3 66.Be8 Kd2 67.Bb4 Ke2 68.Bb5 Kf2 69.Rf4 Ke3 70.Re4 Kf2 71.Be1 Kg2 72.Rg4 Kh3 73.Bf1 Kh2 74.Bf2 Kh1 75.Rh4) 65...Kd3 (65...Bd2 66.Rb5 Bc3 67.Ke4+-) 66.Rb5 (better 66.de3 Ke3 67.Bc5 Kd3+-) 66...Bd2 67.Rd5 Kc2 68.Be5 Bc3 69.Bg6 Kb3 70.Ke6 (better 70.Rd3+-) 70...Ka2 (70...Be5 71.Ke5 Kb2 72.Kd4 Kc1 73.Re5 Kd2 74.Bh7 Kc1 75.Kc3 Kd1 76.Bc2 Kc1 77.Re1) 71.Rd6 (71.Bc3 Kb3 72.Rc5 Ka3 73.Bc2 Ka2 74.Ra5) 71...Bb4 72.Rd3 Kb1 (72...Bf8 73.Rd8 Bb4 74.Bc2 Bc5 75.Rd1 Bd4 76.Bd4 Ka3 77.Bc3 Ka2 78.Ra1) 73.Rb3 (73.Rd1 Ka2 74.Bc2 Bc3 75.Bc3 Ka3 76.Ra1) 73...Ka2 (73...Kc1 74.Bf4 Kd1 75.Bd3 Ke1 76.Be3 Bd2 77.Rb1 Bc1 78.Rc1) 74.Rb4 Ka3 75.Rb2 (75.Bc3 Ka2 76.Bc2 Ka3 77.Ra4) 75...Ka4 76.Kd5 Ka5 77.Kc4 Ka6 78.Rb5 (78.Bd4 Ka5 79.Ra2) 78...Ka7 79.Kc5 (79.Be4 Ka6 80.Bc7 Ka7 81.Ra5) 79...Ka8 (79...Ka6 80.Rb8 Ka7 81.Be4 Ka6 82.Ra8) 80.Kc6 Ka7 81.Ra5 1–0. BeepBeepImAJeep (2570) – Ogrilla (2585), lichess.org, 2018.

5.Qc2 d5 6.Nf3 dc4 7.Ng5 c6?? (better 7...Nbd7=+) 8.Bf6+/- g6 9.Be7 Qe7 10.h4 (10.Nf3 cb5 11.a4 ba4 12.Qc4 Bd7+-) 10...cb5+/- 11.Nc3 (11.a4 ba4 12.Qc4 Bd7+-) 11...a6 (11...b4 12.Nce4 f5 13.Ng3+/-) 12.e3 h6 13.Nf3 Nc6 14.h5 g5 15.Rb1 Rd8 16.Be2 e5 17.e4 (17.a4 b4 18.Bc4 bc3 19.Qg6 Kf8 20.Qh6 Ke8 21.Qh8 Kd7 22.Qg7+/-) 17...Be6= 18.Nd5 Bd5 19.ed5 Rd5 20.0-0 (20.Qe4!? Qd7 21.Qe3-/+) 20...e4-/+ 21.Nh2 Rad8 22.Qc3 f5 (22...Rd2!? 23.Qe3-+) 23.Rfe1 (23.a4 g4-/+ (worse 23...Rd2 24.ab5 Ne5 25.Bc4 Nc4 26.Qc4 Qf7 27.Qc3+=)) 23...Qg7 (23...Rd2 24.a4 Qe5 25.Qc1-/+) 24.Qg3 (better 24.Nf1!?=+) 24...Rd2-+ 25.Qh3 (25.a4 Nd4 26.Bf1 Qf6-+) 25...Qf6 (25...Nd4 26.Bf1-+) 26.Nf1 (26.a4 Nd4 27.Bf1-+) 26...Ra2 27.Ne3 Ne7 (27...Rdd2 28.Bf1 Rf2 29.Nc4 Rf1 30.Rf1 bc4 31.Rf5 Qd4 32.Kh1-+) 28.Nc4 (28.Rbc1 Rdd2 29.Kf1 g4-+) 28...Re2 29.Re2 bc4 30.Qa3 b5 31.Qc5 Rd6 (31...Rd7 32.Ra2-+) 32.Ra2 Kf7 33.Rba1 Qd4 34.Qc7 (34.Qd4 Rd4 35.Ra6 c3-+) 34...e3 35.fe3 Qe3 36.Kh1 Rd4 37.g3 Qf3 (better 37...c3!? 38.Rf1 Rc4 39.Rf5 Ke8 40.Qe5 Qe5 41.Re5-+) 38.Kg1 Rd1 (38...f4!? 39.Re1 Qg3 40.Kf1 Qf3 41.Kg1-+) 39.Rd1 Qd1 40.Kh2 (40.Kf2 f4 41.gf4 Qh5 42.fg5 Qh4 43.Kf1 Qh3 44.Kg1 Qg4 45.Rg2 Qd1 46.Kh2 hg5 47.Rg5 Qe2 48.Rg2 Qh5 49.Kg1 Qd1 50.Kf2-+) 40...Qd5 (better 40...Qh5 41.Kg2-+) 41.Rf2?? (41.Re2 Qe4 42.Re4 fe4+-) 41...c3?? (41...Qe6 42.Qc5-+) 42.Qb6 (better 42.Re2 Qe6 43.Re6 (43.Qc3?? Qe2 44.Kg1 Qh5-+) 43...Ke6 44.Qc3+-) 42...Qe6 (42...Qd1 43.Qa6 Qh5 44.Kg2-+) 43.Qc5 Qf6 (better 43...Nd5!? 44.Qa7 Kg8 45.Qb8 Kg7 46.Qa7 Qf7 47.Qd4 Kg8 48.Kg1-+) 44.Qc7 b4 (better 44...f4 45.gf4 Qf5-+) 45.Qd7? (better 45.Qc4 Qe6 46.Qb4-+) 45...Qe5 (better 45...f4-+) 46.Re2 (46.Qd3 f4 47.g4-+) 46...Qe2 47.Kh3 Qe6 (47...Qe6 48.Qd3 Qe1-+; 47...g4 48.Kh4 Qh2) 0-1. Melitopol_Chery (2380) - Banelevich (2470), KeepPushing Online ANNIVERSARY Arena, lichess.org, 2021.

5.Nc3 c6 6.e3 d5 7.Nf3 dc4 8.Bc4 cb5 9.Nb5 a6 10.Nc3 Nc6 11.0-0 Nd5 12.Nd5= ed5 13.Bb3 Bf6 14.d4 Bg4 15.h3 Bh5 16.a4 Na5 17.Ba2 Nc4=+ 18.Bc4 dc4 19.Qc2 Bf3 20.gf3 b5 21.Rfd1 Qd5 22.e4 Qh5 23.Kg2 Qg6 24.Kf1 Qh5 25.Ke2 Qh3 26.Rh1 Qh1?? 27.Rh1+- h6 28.ab5 ab5 29.Kd2 Rfc8 30.Ke2 Ra2?? 31.Qc3 Rd8 (31...Rd8 32.e5 Be7+-). gtate (1900) – hotchess (1850), net–chess.com, 2004.

5.d4 c6 6.a4 cb5 (6...d5!? 7.cd5 Ne4–/+) 7.ab5= d5 8.c5 b6 (8...e5!? 9.de5 Ne4=) 9.c6+= Bb4 (9...Ne4!? 10.Nc3 Bb4+=) 10.Bc3+/– Qe7 11.f3 (11.Qb3!? Bd6 12.Nd2+-) 11...Bc3 (11...a6 12.Qb3 Bd6 13.Nd2=) 12.Nc3 a6 (12...e5 13.Qd2 Re8 14.de5 Qe5 15.Ra4+/–) 13.e3+/– Qb4 (13...Ra7!?+/–) 14.Qc2+- a5 (14...Ra7!? 15.Nh3+-) 15.Rb1 Qd6 16.Na4 Nbd7 17.cd7 Bd7 18.Bd3 Rfb8 19.Ne2 Rc8 20.Qb3 Rc7 21.0-0 Rac8 22.Nec3 e5 23.Rfe1 e4 (23...g6+-) 24.fe4 de4 25.Ne4 Ne4 26.Be4 Be6 27.d5 Bd7 28.Qd3 (28.Bd3 Bg4+-) 28...g6 (28...Rc4 29.Nb2 Rb4 30.Bh7 Kf8 31.Bf5 Bb5 32.Qd2+- (32.Bc8 Bd3 33.Nd3 Rb1 34.Rb1 Qd5–/+)) 29.Rb3 (29.Qd1 Rc4 30.Bd3 Rh4+-) 29...Rc2?? (better is 29...Rc4 30.Nb2 Rb4 31.Rb4 Qb4+-) 30.Qf1 (30.Nc3 a4 31.Na4 R2c4+-) 30...Ra2?? (better is 30...R2c4 31.Nb6 Qb6=) 31.Nc3 (better is 31.Ra1!? Ra1 32.Qa1 Rc4+-) 31...Ra3 (31...a4!? 32.Na2 ab3+/–) 32.Ra3+- Qa3 33.Nb1 Qa4 (33...Qc5 34.Qf4+-) 34.Bd3 Rc5 (34...Qb4 35.Rc1+-) 35.h3 (better is 35.Qf6 Qb3 36.Rf1 Be8+-) 35...Rd5?? (35...Qb4 36.e4 Bb5 37.Bb5 Qb5+-) 36.Nc3 (36.Nc3 Qb3 37.Nd5 Qd5 38.Bc4+-) 1–0. Baer,Cy (1895) – Hess,Volker (1735), RSS4D easy–40, 2007.

5.d4 d5 6.Nc3 dc4 7.e3+=.

5.d4 d5 6.c5 c6 7.a4 b6 8.Qc2 (8.cb6!? ab6 9.Nc3–/+) 8...bc5–+ 9.dc5 (9.Nf3 a6–+) 9...Qc7 (9...Bb7 10.Nf3 Nbd7 11.Nc3–+) 10.Na3 (10.Nf3 Nbd7–+) 10...Bb7 (10...Nbd7 11.e3–+) 11.Nf3 Nbd7 12.Bf6 (better 12.e3–+) 12...Bf6 (12...Nf6?! 13.e3–+; 12...gf6?! 13.bc6 Bc6 14.Nb5 Qa5 15.Qc3–+) 13.Rc1 (13.Rb1 Qa5 14.Nd2 a6–+) 13...Rfc8 (13...Qa5 14.Nd2–+) 14.Qd2 (14.bc6 Bc6 15.Nb5 Bb5 16.ab5 Nc5 17.e3 Qa5 18.Kd1–+) 14...cb5 (better 14...Be7!? 15.bc6 Qc6 16.e3 Nc5 17.Qd1–+) 15.Nb5? (15.c6 a6 16.cb7 Qb7 (16...Qc1?! 17.Qc1 Rc1 18.Kd2=+) 17.ab5 Nc5–+) 15...Qc6 (15...Qd8 16.c6 Bc6 17.e3–+) 16.Nd6? (better 16.Nfd4 Bd4 17.Nd4 Qa4 18.c6 Bc6 19.e3–+) 16...Rcb8 (better 16...Nc5!? 17.Nc8 Rc8 18.Qc2 Nd3 19.ed3 Qc2 20.Rc2 Rc2 21.d4–+) 17.Qa5? (17.Nd4 Qa4 18.e3 Bc6–/+) 17...Nb6?? (better 17...Ba6 18.e3 Nc5 19.Qc5 Qc5 20.Rc5 Rb1 21.Kd2 Bf1–+ (21...Rf1?! 22.Rf1 Bf1 23.g3–/+)) 18.Rb1?? (better 18.e3 Qa4 19.Qa4 Na4 20.c6=+) 18...Na4–+ 19.Rc1 Ba6 20.Nd2 (20.e3 Rb1! 21.Rb1 Bc3 22.Qc3 Nc3–+) 20...Be7 (20...Bd8!? 21.Nc8 Rc8 22.Qb4–+) 21.Kd1 (21.Nf3 Bd8 22.Qd2 Nc5 23.Qc2 Ba5 24.Kd1–+) 21...Nb2 (better 21...Bd8 22.Nc8 Rc8 23.Qb4–+) 22.Ke1 Bd6 23.cd6 (23.Ra1 Bf4 24.e3 Bf1 25.Kf1–+) 23...Qd6 (23...Qc1) 24.Qc3 (24.f3 Rc8 25.Ra1 Rc2–+) 24...Nc4 (better 24...d4 25.Qa5 Rc8 26.Nb3–+) 25.Nc4 (25.e3 Nd2 26.Qd2 Rc8–+) 25...Bc4 26.Rd1 (26.h4 a5 27.e3 Rb3–+) 26...Qb4 (26...Rc8!? 27.Rc1–+) 27.Qb4 Rb4 28.e3 (28.h4 a5 29.Rh3 Bb5–+) 28...Bf1 (better 28...Rb2!? 29.Bc4 dc4 30.Rf1–+) 29.Rf1 Rab8 (29...a5 30.Kd2–+) 30.Kd2 (30.Ke2 a5–+) 30...g6 (30...Rb2 31.Kc3–+) 31.Kc3 (31.Ra1 Rb2 32.Kd3 e5–+) 31...Rb2 (31...a5 32.Rd2–+) 32.Ra1 Re2 33.Ra7 Rbb2 34.Kd4 (34.f4 Rg2 35.h3 Rbc2 36.Kb3 Rc4–+) 34...Rf2 35.Rc1 (35.Rh1 Rg2 36.h3 Rh2–+) 35...Rg2 36.Ke5 (36.h4 Rg4 37.Ke5 Rf2–+) 36...Rh2 37.Kf6 (37.Kd4 Kg7 38.Rg1 h5–+) 37...Rhf2 38.Ke7 (38.Ke5 Rb4–+) 38...Rbe2 39.Rc8 Kg7 40.Raa8 (40.Ra3 Rf3–+) 40...Re3 41.Rg8 Kh6 42.Rh8 (42.Ra1 d4 43.Rh1 Kg5 44.Rg1 Kh4–+) 42...d4 43.Kf8 (43.Ra1 Kg7 44.Rd8 e5–+) 43...d3 44.Kg8 (44.Ra1 Rh3–+) 44...d2 45.Rh7 Kg5 46.Ra5 Rf5 (46...Rf5 47.Ra1 Re1–+) 0–1. Goncalves,Samuel Jesus P – Almeida,JAF, Portugal Open, 2017.

5.d4 Ne4 6.c5 (6.Nc3!? d5 7.Nf3+=) 6...c6 7.a4 (7.Nc3 d5–/+) 7...Qa5 8.Nd2 cb5 (8...d5 9.cd6 Bd6 10.Ngf3–/+) 9.ab5+= Qb5 10.Rb1 (10.Qc2 Nd2 11.Kd2 d5+=) 10...Nd2 (10...Qb4 11.Qc2 Nd2 12.Qd2–/+) 11.Qd2+= d6 12.e4 Qc6 13.f3? (better is 13.Bd3!?+=) 13...dc5–+ 14.Rc1 (14.Ne2 Qc7–+) 14...Rd8 15.Bd3 Qd7 16.Ne2 cd4 17.e5?! (17.Nd4 Bf6 18.e5 Be5 19.Rc4–+) 17...Nc6 18.0-0 Ne5 19.Be4 (19.f4 Nd3 20.Qd3 b5–+) 19...f5 20.Bb1 Nc6 21.Rfd1 b6 22.Kh1 Bc5 23.Bd3 Ne5 24.Bb1 Nc6 25.Nf4?? (25.Bd3 Qd6 26.Bc4–+) 25...a5–+ 26.Ba2 (26.Nd3 Qe7–+) 26...Qd6 27.Re1 Re8 28.Nd3 Nb4 29.Nb4 (29.Bc4 a4–+) 29...Bb4 30.Qd3 (30.Qd4 Qd4 31.Bd4 Be1 32.Re1 b5–+) 30...Be1 31.Re1 Qb4 32.Rb1 Ba6 33.Qd4 Qd4 34.Bd4 b5 35.Re1 Kf7 36.Kg1 a4 37.Bc5 Rad8 38.h3 (38.Bb4 Bb7–+) 38...Rd2 (38...Rd2 39.Bb1 Red8–+) 0–1. Baer,Cy (1895) – Grimm,Wolfgang (2030), RSS7E easy–56, 2007.

5.e3 a5 6.Nf3 a4 7.a3 d5 (7...d6 8.Nc3+=) 8.Nc3+= dc4 9.Bc4 c5 (9...c6 10.Na4 cb5 11.Bb5+=) 10.bc6 (10.Na4 Nbd7+=) 10...Nc6= 11.Na4 Qa5 (11...e5 12.d4 (worse 12.Ne5 Ne5 13.Be5 Qa5-/+) 12...ed4 13.Nd4 Qa5 14.Nc3 Nd4 15.ed4=) 12.Nc3+= b6 13.0-0 Ba6 14.Qb3 Bc4 15.Qc4 Rac8 (15...Rfc8 16.Qb5+=) 16.Qb3 Nd5 (16...Rfd8 17.d4+/-) 17.d4 Bf6 (17...Nd4 18.Nd4 (worse 18.ed4 Nc3 19.Rfe1 Rfd8=+) 18...Nc3 19.Rac1+/-) 18.Ne4 (18.Rfc1 Rfd8+/-) 18...Be7 19.Rfc1 Na7 (19...Qa6 20.Nc3 Na5 21.Qa4+/-) 20.Ne5 (20.Nc3 Nf6+/-) 20...h6 (better 20...Rc1 21.Rc1 Rc8 22.Rc8 Nc8+/-) 21.Nd2?? (better 21.Nc3+/-) 21...Qd2-+ 22.Rc2?? (22.Nc4 Qe2 23.Rc2-+) 22...Rc2 23.Nf3 (23.Nd3 Nc3 24.Bc3 Qd3 25.Qb6 Qc3 26.Rf1 Qa3 27.Qb7-+) 23...Qf2 24.Kh1 Qg2 0-1. ClayPigeons (2205) - anuarzt (2275), Rated Bullet game, lichess.org, 2020.

5.e3 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 d6 9.Nc3 b6 10.Nf3 Bb7 11.Be2 Nbd7 12.0-0 Qa8 13.Qc2 e5 14.d3 Nc5 Black plans e4 15.Bb2 e4 16.de4 Nce4 17.Ra1 Qc8 18.Ne4 Be4 19.Qb3 Qb7 20.Ne1 Ra8 21.Bf3 Ra1 22.Ba1 Qa8 23.Bd4 Qa5 24.Qc3 Bf3 25.Qa5 (25.Nf3!? Qc3 26.Bc3+=) 25...ba5=+ 26.gf3 d5 (26...a4!?=+) 27.c5+= Nd7 (27...a4!?+=) 28.Nd3 a4 29.Kf1 (29.c6!? Nb8 30.Nf4+-) 29...a3 30.c6 Nb8 31.Nc1 Bd6 32.h3 f6 33.Ke2 Kf7 34.Kd3 Ke6 35.Kc2 Be5 36.Ne2 Kd6 37.Kb3 Bd4 38.ed4 g5 39.Ka3 h5 (39...h6+-) 40.Kb4 f5 (40...h4 41.f4 g4 42.hg4+-) 41.Ka5 (better 41.Ng3 f4 42.Nh5 Nc6 43.bc6 Kc6 44.Nf4 gf4 45.h4+-) 41...f4 42.Kb4 Ke6? (42...h4+-) 43.Kc5 g4 (43...Ke7+-) 44.fg4 f3 45.Nf4 Kf6 1-0. bjoernsen (2385) - Boydia (2340), Rated blitz game, lichess.org, 2020.

5.e3 a6 6.a4 d5 7.Nf3 Nbd7 8.Be2 Re8 9.0-0 b6 10.Nc3 Bb7 11.Nd4 (11.cd5 Nd5 12.Nd5 Bd5 13.ba6 Bf3 14.Bf3 Ra6+=) 11...Nc5 12.Qc2 (12.cd5 Nd5 (worse 12...Bd5 13.Nd5 ed5 14.ba6+/-) 13.Nd5 Bd5=) 12...Bf8 (12...e5!? 13.Nb3 d4 14.Nc5 Bc5=+) 13.Nb3 Nb3 14.Qb3 dc4 15.Bc4 a5 (15...Qd2?? 16.Rfd1 Ne4 17.Rd2 Nd2 18.Qa2 ab5 19.Nb5+-) 16.d4 Bd6 17.h3 Qe7 18.Rfd1 Rad8 19.Ba3 Ne4 20.Ne4 Be4 21.Bd6 cd6 22.Rac1 Qg5 23.Bf1 Rc8 24.Qb2 h6 25.Rc8 Rc8 26.Rc1 Qd8 27.Rc3 Bb7 28.Qc1 Rc3 29.Qc3 Qc8 30.Qc8 Bc8 31.Bc4 e5 32.de5 de5 33.h4 Kf8 34.Kf1 Ke7 35.Ke1 f6 36.Kd2 Kd6 37.Kc3 Kc5 38.g3 (38.e4 g5 39.hg5 hg5=) 38...Bg4=+ 39.Bb3 g5 40.e4 Bf3 41.Bc2 h5 42.Kd3 gh4 (better 42...Kb4!?-+) 43.gh4 Kb4 44.Ke3?? (better 44.Kd2-+) 44...Kc3 45.Bd3 Bd1 46.Be2 Be2 47.Ke2 Kd4 48.f3 Kc4 49.Kd2 Kb4 50.Kd3 Kb3 (50...Kb3 51.f4 Kb4-+) 0-1. Sundin,Thommy (2005) - Larsson,A2 (2235), Svenska Cup, 2018.

5.e3 a6 6.Nf3 ab5 7.cb5 d6 8.a4 Bd7 9.Be2= c6 10.Nc3 cb5 11.ab5 Ra1 12.Ba1 Qb6 13.0-0 Rc8 14.g3 Be8 15.d4 Nbd7 16.d5 Nd5 17.Nd5+= ed5 18.Qd5 Nf6 19.Qf5 Bd7= 20.Qf4 Bb5 21.Bb5 Qb5= 22.Nd4 Qe5 23.Qf3 Qe4 24.Qe2 d5 25.Qb5 Rc7 26.Qb6 Bd8 27.Qa7 h6 28.Qb8= Qe7? 29.Nf5+/– Qd7 30.Bf6 gf6 31.Nh6 Kg7 32.Ng4 Qg4 33.Qd8 Qd7 34.Qa8 b5 35.Qa1 Rc4 36.Rd1 b4 37.Qb2 Qd6 38.Rc1 Rc1=+ 39.Qc1 d4?? 40.ed4 Qd4–/+ 41.h4?? b3–+ 42.Qb1 b2 43.Kg2 Qc3 44.Kh3 Qc1 45.Qe4 b1Q 46.Qg4 Qg6 47.Qg6–+ fg6 48.f4 Kh6 49.Kg4 Qd1 50.Kh3 Qh5 51.Kg2 Qg4 52.Kf2–+ g5 53.fg5 fg5 54.hg5 Kg5 55.Kg2 Kf5 (55...Kf5 56.Kf1 Qd1 57.Kf2 Ke4 58.g4 Qf3 59.Kg1 Qg3 60.Kf1 Ke3 61.g5 Qf2#; 55...Qe2 56.Kh3 Qf2 57.g4 Kf4 58.g5 Qg3#) 0–1. fernandobh (1955) – Eralos (2055), ajedrez21.com, 2004.

5.e3 b6 6.Nf3 c5 7.Be2 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0).

5.e3 c5 6.Nf3= b6 7.Be2 Bb7 8.0-0 d6 9.d4 Nbd7 10.a4 Re8 11.Nbd2 Qc7 12.Rc1 a6 13.Qb3 ab5 14.ab5 Ra7 15.Ra1 Rea8 16.Ra7 Ra7 17.Ra1 Qb8 18.Ra7 Qa7 19.Qa3 Qa3 20.Ba3 Ne4 21.Ne4 Be4 22.Kf1 Kf8 23.Ke1 Bf6 24.Bb2 Ke8 25.Kd2 Kd8 26.Bc3 Kc7 27.g4 h6 28.dc5 Bc3 29.Kc3 dc5 30.h4 f6 31.Nd2+= Bg6 32.f4 Bf7 33.g5 hg5= 34.fg5 Bg6 35.h5+= Bh7 36.Bg4 Kd6 37.g6 Bg8 38.Nf3 Ne5 39.Ne5 Ke5 40.Kd3 f5=+ 41.Bf3 Kf6 42.e4 f4–+ 43.e5 Ke5 44.Bc6 Kf5 45.Be8? Kf6 46.Ke4 e5 47.Bf7 Bf7 48.gf7 Kf7 49.Ke5 f3 50.Kd6 f2 51.Kc6 f1Q 52.Kb6 Qf5 53.Kc7 Qe5 54.Kc6 Ke7 55.b6 Qd6 56.Kb7 Kd8 57.Ka7 Kd7 58.b7 Qc7 59.Ka8 Qa5 60.Kb8 Kc6 61.h6 gh6 62.Kc8 Qa6 63.Kd8 Qb7 (63...Qb7 64.Ke8 Qg7 65.Kd8 Qd7#) 0–1. Istvanny (1615) – Kuhnpb (1710), internet, 2007.

5.e3 c5 6.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0).

5.e3 c6 6.a4 Qa5 7.Nf3 Ne4 8.Be2 Qd8 (8...d5 9.Qc2=) 9.0-0+= Bf6 10.d4 c5 (10...d5 11.Nbd2 Nd2 12.Qd2 dc4 13.Bc4+/–) 11.Nbd2 (11.Qc2 d5+/–) 11...Nd2 12.Qd2 b6 13.a5 Bb7 14.ab6 Qb6 (14...ab6!? 15.dc5 Bb2 16.Ra8 Ba8 17.Qb2 bc5+/–) 15.dc5+- Qc5 16.Bf6 gf6 17.Qd4 Qd4 18.ed4 Kg7 (18...a6 19.b6+/–) 19.Ra4+- d6 20.Rfa1 a6 (20...Rc8 21.Ra7 Ra7 22.Ra7 Bf3 23.gf3+-) 21.c5 a5 22.Ra5 (22.c6 Nc6 23.bc6 Bc6 24.Ra5 Ra5 25.Ra5 Rb8+-) 22...Ra5 23.Ra5 dc5 (23...Rc8 24.c6 Nc6 25.bc6 Rc6 26.g3+-) 24.dc5 Bf3?! (24...Rc8 25.c6 Nc6 26.bc6 Rc6+-) 25.Bf3 Nd7 (25...Rc8 26.b6 Kg6 27.h4+-) 26.b6 Rc8 27.b7 Rc5 (27...Rc7+-) 28.Rc5 Nc5 29.b8Q 1–0. GuestCZSH – GuestPGGH, freechess.org, 2017.

5.e3 c6 6.a4 a6 7.Nc3 Bb4 (7...b6 8.Nf3+=) 8.Nf3= b6 (8...d5 9.Qc2=) 9.Qb3 a5 (9...c5 10.Be2=) 10.Be2 Bb7 11.0-0 d5 12.cd5 cd5 13.Ba3 Bd6 (13...Ba3 14.Qa3 Nbd7 15.d4+=) 14.Bd6 (14.d4 Qe7+=) 14...Qd6 15.h3 (15.d4 Nbd7+=) 15...Nbd7 16.d4 Rac8 17.Rfc1 Rc7 18.Na2 Rfc8 19.Rc7 Rc7 20.Rc1 Rc1 21.Nc1 Qc7 22.Qb2 Ne4 23.Na2 f6 24.Bd3 Nd6 25.g4 (25.Nc3 e5 26.Qb3 Nc4+/–) 25...g6 (25...Ne4 26.Qa3=) 26.Qb1 (26.Qc3 Qc3 27.Nc3 e5=) 26...Ne4 (26...e5 27.Nd2=) 27.Qd1 (27.Qc2 Qd6=) 27...Kg7 (27...e5 28.de5 fe5 29.Be4 de4 30.Qb3 Kh8 31.Ng5=) 28.Nc1 (28.Qc2 Qc2 29.Bc2 Nd6=) 28...Nc3 29.Qc2 Qc8 30.Nd2? (better is 30.Ne2!? Ne2 31.Qe2=) 30...Na4!–/+ 31.Ne2 (31.Qa4 Theme: Deflection from c1 31...Qc1 A double attack) 31...Qc2 32.Bc2 Nb2 33.Nc3 Kf7 (33...Nc4 34.Nc4 dc4 35.e4–/+) 34.f3 Ke7 35.Kf2 Kf7 (35...Kd6 36.f4–/+) 36.e4 (36.Kg1 e5 37.Kf1–/+) 36...h6–/+ 37.Ke3 g5 38.Bb3 Ba8 (38...de4 39.fe4 Ke7 40.Nf3+=) 39.Ndb1 (39.ed5 Bd5 40.Nd5 a4=) 39...Nc4 (better is 39...de4!? 40.fe4 Ke7+=) 40.Bc4+= dc4 41.Na3 Ke7 42.Nc4 Kd8 43.Nd6 (43.d5!? ed5 44.ed5+=) 43...Ke7= 44.Nc4 (44.Nc8 Kd8 45.Na7=) 44...Kd8+/– 45.Na4 (45.d5 ed5 46.ed5 Bb7+/–) 45...Kc7+= 46.f4 gf4 (46...f5 47.gf5 ef5 48.e5+= (worse is 48.ef5 Bg2=)) 47.Kf4 e5? (better is 47...Bb7+=) 48.de5+- fe5 49.Kf5 Nc5 (49...Bb7 50.Ne5 Ne5 51.Ke5+-) 50.Nc3 (50.Nc5!? bc5 51.h4 a4+-) 50...Nd3 51.h4 White prepares the advance g5 51...Nf2 (51...Bb7 52.g5 (52.Ne5?! Bc8 53.Kf6 Ne5 54.Ke5 Bg4+=) 52...hg5 53.hg5 Bc8 54.Kf6+-) 52.g5 (52.Ne5?! Bb7+-) 52...hg5 53.hg5 Kd8 (53...Bb7 54.g6 (54.Ne5?! Bc8 55.Kf6 Bb7+-) 54...Bc8 55.Kf6 Ng4 56.Ke7+-) 54.Nb6 Bb7 55.Ke5 Nd3 56.Kf6 Nf4 (56...Nc5 57.e5 Ke8 58.e6+-) 57.g6 Ng6 (57...Bc8 58.Nc4+-) 58.Kg6 Kc7 (58...Ke7 59.Nc4 a4 60.e5+-) 59.Nca4 (better is 59.Nc4+-) 59...Kd6?? (better is 59...Be4 60.Kf6 Bc6 61.bc6 Kc6+/–) 1–0. Koss,D (1755) – Altmann,T (2500), SSM96, 1996.

5.e3 c6 6.a4 d5 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4).

5.e3 d5 6.a4 c5 7.Nf3 b6 8.Be2 dc4 9.Bc4 Bb7 10.0-0 Nbd7 11.d4 Rc8 12.Nbd2 cd4 13.Bd4 Nc5 (13...Bf3 14.gf3 (14.Qf3? Bb4–+) 14...Bc5 15.Nb3=+) 14.Be2 Qd5 (14...Qc7 15.Be5 Qd7 16.a5=) 15.Qb1 (15.a5 Nfe4 16.Ne4 Qe4=) 15...Nce4 (15...Qh5 16.a5=) 16.Ne4+= Ne4 17.Qb2 (17.Rd1 Qf5+=) 17...Bf6 (17...f6 18.Rad1 Qf5 19.Nh4=) 18.Bf6 Nf6 19.Qd4 (19.Rfd1 Qf5 20.Qe5 Qg6=) 19...Qd4 (19...Ne4 20.a5=) 20.Nd4 h6 (20...e5 21.Nf5 Rc2 22.Bd3=) 21.Bf3 (21.Rfc1 Rc5+=) 21...Bf3= 22.Nf3 Rc4 (22...Rc5 23.Nd4=) 23.Ne5 (23.Nd4 Re8+=) 23...Rc2 (23...Rc5 24.Nc6=) 24.Nc6 Ra8 (24...Ne4 25.Na7 Ra8 26.Nc6=) 25.Rfc1 Rd2 (25...Rb2 26.Rcb1 Rb1 27.Rb1+=) ½–½. hal1958 – Tapiwa, playchess.de, 2003.

5.e3 d5 6.Nf3 dc4 7.Bc4 c6 8.a4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.c4 dc4 6.Bc4 0-0 7.Nf3 c6 8.a4).

5.e3 d6 6.a4 Nbd7 7.Nf3 Re8 8.Be2 a6 9.0-0 ab5 10.ab5 Ra1 11.Ba1 c6 12.d4 cb5 13.Nc3 (13.cb5!? Nb6 14.Qc2=) 13...bc4–/+ 14.Bc4 d5 15.Bd3 h6 16.Qb3 Nf8 17.Rb1 Qc7 18.Ne5 Bd6 (18...N8d7!?=) 19.Nb5+= Qe7 20.Nd6 Qd6 21.h3 (21.Bc3 N8d7+=) 21...N6d7 22.Nd7 (better 22.Bb2=) 22...Qd7 (22...Nd7 23.Bb2=) 23.Bc3 (better 23.Bb5 Qe7 24.Be8 Qe8 25.Bb2+-) 23...Qc6?? (better 23...Qc7=) 24.Bb5+- Qb6 25.Be8 Qb3 26.Rb3 Ng6 (26...g6 27.Bb2+-) 27.Bb5 (better 27.Ra3 e5 28.Ra8 ed4 29.Bd4 Be6+-) 27...Ne7 (27...Nf8 28.Bb4 Bd7 29.Bd6+-) 28.Bb4 (better 28.Ra3 f6+-) 28...Nf5 (28...Nc6 29.Bc6 bc6+-) 29.Rc3 Bd7 30.Bd7 (30.Bd7 h5 31.Rc7+-) 1–0. BeepBeepImAJeep (2510) – andresgoethe (2035), lichess.org, 2017.

5.e3 d6 6.d4+=.

5.e3 Re8 6.Nf3 d6 (6...a6 7.Nc3+=) 7.d4= e5 (7...a6!?=) 8.de5+= de5 9.Qd8 (worse is 9.Ne5 Bb4 10.Ke2 Bd6=) 9...Rd8 10.Ne5 (10.Be5 Bb4 11.Bc3 Be7+=) 10...Bf5 (10...Ne4 11.Bd3 Nc5 12.Be2+=) 11.Be2 Bb4 12.Nc3 (12.Bc3 Bd6+/–) 12...Re8 (12...Ne4 13.Rc1+=) 13.Nf3 (13.Nd3 Bd6+=) 13...Nbd7 (13...Ne4 14.Nd4 Nc3 15.Nf5 Na4 16.Kd1 Nb2 17.Kc2=) 14.0-0 (14.0-0-0 Bd6+=) 14...Bc5 (14...Rad8 15.Nd4 Bg6 16.Bf3+/–) 15.Nh4 (15.Rfd1!?+/–) 15...Be6+= 16.Bf3 Rab8 (16...Bc4 17.Rfc1 (worse is 17.Bb7 Rab8 18.Bc6 Bf1 19.Kf1 Re6=) 17...c6 18.bc6+-) 17.Nd5+/– Bd6 18.Nf6 (18.Rfd1 Ng4 19.Nf4 Bf4 20.ef4 Ngf6+/–) 18...Nf6 19.Rac1 (19.Bf6 gf6 20.Bd5 Red8+/–) 19...Nd7 (19...Be7 20.Bd4+/–) 20.Be2 (20.Bd5 Nc5+/–) 20...b6 (20...Rbd8 21.Rfd1+=) 21.Rfd1 (21.Nf3 Rbd8+/–) 21...Nf8 (21...a6!?+/–) 22.Nf3 f6 (22...a5 23.ba6 Ra8 24.Nd4+-) 23.Nd4 Bd7 (23...Rbd8 24.Bf3+-) 24.Bf3 Rbd8 25.Bc6 (25.Bd5 Ne6+-) 25...Bc5 (25...Bc6 26.Nc6 (26.bc6?! Be5+/–) 26...Ra8 27.a3+-) 26.Bd7 (26.Bd5 Kh8+-) 26...Nd7? (better is 26...Rd7 27.Nc6 Bd6+-) 27.Nc6 Bd6 28.Nd8 Rd8 29.Bd4 (29.Rd5 a6+-) 29...Nc5 (29...a5 30.ba6 Ra8 31.Rd2 Ra6 32.h3+-) 30.Bc5 bc5 31.g3 f5 (31...Kf7 32.Rd2+-) 32.a4 (32.Rc3 Rd7+-) 32...Kf7 33.Rd5 Ke6 34.Re1 Kf6 (34...Rd7 35.e4+-) 35.e4 Re8 (35...fe4 36.Re4 g5 37.h4+-) 36.Rf5 Kg6 (36...Ke6 37.f4+-) 37.g4 (37.f4 Be7+-) 37...h6 (37...c6 38.f4 cb5 39.ab5+-) 38.e5 Be7 39.e6 Rd8 (39...Bf6 40.Rc5 Bc3 41.Re4+-) 40.Rd5 (40.Rf7 Bh4+-) 40...Re8 (40...Rd5 41.cd5 Kf6 42.h4+-) 41.Ree5 (41.f4 Kf6+-) 41...Kh7 (41...Kf6 42.Re4+-) 42.a5 Kg8 (42...Bf6 43.Re4+-) 43.b6 (better is 43.Rd7 Kh7+-) 43...Bd8 (43...cb6 44.ab6 ab6+-) 44.ba7 Kf8 (44...Be7 45.Rd7 Bd6 46.Re4+-) 45.e7! Be7 (45...Re7 Deflection from d8 46.Rd8) 46.Re7! Ke7 Decoy theme: e7 (46...Re7 Theme: Deflection from a8 47.a8Q) 47.Re5 (47.Re5 Kd6 48.Re8+-) 1–0. Dopper,Johan – Bloom,Aad, 1992.

5.Nf3 b6 6.e3 Bb7 (--> 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0).

5.Nf3 b6 6.e3 c5 7.Be2 Bb7 8.0-0 d6 9.Qc2 Be4 10.d3 Bg6 (10...Bb7 11.Nc3=) 11.Nbd2 (11.Nc3 Nbd7+/–) 11...Nbd7 12.h3 e5? (better is 12...h6!?=) 13.Nh4+- Re8 (13...a6 14.Bf3+-) 14.Ng6 (14.Bf3 Rb8+-) 14...fg6 (14...hg6 15.Bf3+-) 15.a4 (15.Bf3 Rc8+-) 15...Rf8 (15...a6 16.Bf3 Ra7 17.Bc3+-) 16.Nb3 White intends a5 (16.Bf3 a5+-) 16...Nh5 (16...a5 17.Bf3+-) 17.Bf3 (17.a5 a6 18.ab6 Qb6+-) 17...Rb8? (17...Rf3 18.gf3 a5 19.ba6 Ra6 20.Nd2+/–) 18.a5 (18.Bd5 Kh8+-) 18...Bg5? (better is 18...Rf3!? 19.gf3 Bh4+-) 19.Qe2 (19.ab6 ab6 20.Bd5 Kh8+-) 19...Nhf6 20.g3 (20.ab6 ab6 21.Bc6 Qe7+-) 20...h5 (20...Qe8 21.ab6 ab6 22.Ra7+-) 21.h4 Bh6 22.ab6 ab6 23.Ra7 Qe7 24.Rfa1 Qe6 25.Kg2 (25.Bc6 Rf7+-) 25...Kh8 26.Nd2 Rfd8 (26...d5 27.cd5 Nd5 28.Nc4+-) 27.Bc6 Qg4 (27...Kg8 28.Qf3+-) 28.Qg4 hg4 29.Ne4 Nf8 (29...Ne4 30.Be4 (worse is 30.Rd7 Rd7 31.Bd7 Nf6+-) 30...g5 31.hg5 Bg5 32.Rh1 Bh6 33.Bf5+-) 30.Rf7 (better is 30.Nf6 gf6 31.h5 g5+-) 30...Ne4 31.Be4 Re8 32.Ra6 Kg8 (32...Kh7 33.Bc3+-) 33.Bd5 Kh8 34.Bb7 (34.Rc7 Red8+-) 34...Ne6 35.Rb6 Nd8 36.Rd7 e4 (36...Kh7 37.Bc3+-) 37.de4 Nb7 38.Rbb7 Rb7 39.Rb7 Re4 40.Rb6 (better is 40.b6 Rc4 41.Ba3+-) 40...Rc4 41.Rd6?? (41.Rb8 Kh7 42.b6 Be3+-) 41...Rb4? (better is 41...Rc2 42.Be5 Be3 43.Rd8 Kh7+=) 42.Bd4?? (better is 42.Be5!? Rb5 43.Rg6 Kg8 44.Rg4 Rb4+-) 42...Rb5?? (42...cd4 43.Rd4 Rb2 44.Re4+= (worse is 44.Rg4 Be3 45.Rg6 Kh7–+)) 43.Rg6?? (better is 43.Rd5+-) 43...Kh7 (43...cd4!? 44.ed4 Rb2=) 44.Rg4+= c4?? (better is 44...cd4 45.Rd4 Rb2+=) 45.Bc3 Rc5 46.Kf3 (46.Rd4 Rc7 47.f4 g5+-) 46...Rf5 (46...g6 47.Ke2+-) 47.Ke2 Rc5 48.e4 g5 (48...g6+-) 49.hg5 Bg5 50.e5 Kh6 (50...Bh6 51.e6 Rc6 52.Re4+-) 51.Re4 Rc7 (51...Rc8 52.f4 Be7 53.f5+-) 52.f4 Be7 53.g4 Kg6 (53...Kg7 54.e6 Kg8 55.Kf3+-) 54.Kf3 (54.f5 Kf7 55.e6 Kf8+-) 54...Ba3 (54...Ra7 55.f5 Kg5 56.Bd2 Kh4 57.Be3+-) 55.e6 Be7 (55...Rh7 56.Rc4 Bc1 57.f5 Kg5+-) 56.f5 Kg5 57.Bd2 (better is 57.Re1 Rc5 58.Rh1 Rf5 59.gf5 Kf5 60.Re1+-) 57...Kf6 58.Bc3 Kg5 59.Rd4 (better is 59.Re1 Rc5 60.Rh1 Rf5 61.gf5 Kf5+-) 59...Rb7 60.Bd2 Kf6 61.Rc4 Ke5 62.Be3 Rb3 63.Re4 Kf6 64.Ke2 Rb2 (64...Rb8 65.Rc4 Re8 66.Bd4 Kg5 67.Kf3+-) 65.Kd3 Rg2 (65...Rb3 66.Kc4 Rb8 67.Rd4+-) 66.Rc4 (better is 66.Bd4 Kg5 67.f6+-) 66...Rg3 67.Ke2 Rh3 (67...Ke5+-) 68.Rc7 Rh2 (68...Bb4 69.Bd4 Kg5+-) 69.Kf3 Rh3 70.Ke4 Rh4 71.Re7! 1–0. Pfueller,Volker – Gnass,Erhard, 2rd Berlin Germany, Senior Championship, 2010.

5.Nf3 b6 6.g3 Bb7 7.Bg2 h6 8.0-0= c5 9.d4 cd4 10.Bd4 d5 11.Ne5 Qc7 12.Nd2 Nbd7 13.Nd7 Qd7 14.a4 dc4 15.Bb7 Qb7=+ 16.Qc2 Rac8 17.Rfc1 Rfd8 18.Bb2 c3 19.Bc3 Bb4 20.Qb2 Bc5 21.Nb3 Be7 22.Nd4+= Bc5 23.Nc6 Rd7 24.Bf6+/– gf6 25.Qf6 Bf8 26.Rc4 Bg7?? 27.Rg4 Kh7 28.Qg7# 1–0. algernon (2155) – kostaspetidis (2340), net–chess.com, 2003.

5.Nf3 c5 6.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0).

5.Nf3 c5 6.e3 d5 7.Be2 b6 8.0-0 Bb7 9.d4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.d4).

5.Nf3 d5 6.cd5 Nd5 (6...ed5 7.e3+=) 7.e4= Nf6 (7...Nf4 8.d4=) 8.e5 (8.Qc2 a6=) 8...Nd5 9.Bc4 (9.Nc3 a6=) 9...a6+= 10.0-0 (10.Nc3 ab5 11.Nb5 c6+=) 10...ab5 11.Bb5 c6 (11...Bd7 12.Qb3+=) 12.Bc4 (12.Bd3 b6+=) 12...Nd7 (12...b6 13.Nc3+=) 13.d4 N7b6 (13...b5 14.Bd3+=) 14.Bb3 Nf4 15.Nc3 Nbd5 (15...Qd7 16.Bc2=) 16.Rc1 (16.Nd5 ed5 17.Bc1 Ng6=) 16...Ng6 (16...Qa5 17.Qc2+=) 17.a4 (17.Qc2 Bd7=) 17...Qb6 (17...Ngf4 18.Ne2=) 18.Rb1 Qd8 19.Rc1 (19.Qc2 Nb4 20.Qe4 Qa5=) 19...Bg5 (19...Ngf4!?=) 20.Ng5+= Qg5 21.Ne4 Qh4 22.Qc2 (22.Qf3 Qf4+=) 22...Ngf4=. Bonetti,Shane – guest1464, ICC, 2002.

5.Nf3 d5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4).

5.Nf3 d6 6.e3 (6.Nc3 Nbd7+=) 6...Ne8 (6...e5 7.Be2+=) 7.d4= Nd7 (7...a6 8.Bd3=) 8.Nbd2 (8.Bd3 a6=) 8...b6 (8...Ndf6 9.Be2=) 9.Bd3+= Bb7 10.Qc2 h6 (10...Nef6 11.0-0+=) 11.g4 (11.0-0 a6+=) 11...a6 (11...c6 12.Bh7 Kh8 13.Be4+=) 12.h4 f6 (12...c5 13.bc6 Bc6 14.g5=) 13.Ke2 (13.ba6 Ba6 14.g5 fg5 15.hg5 Bg5 16.Bh7 Kh8=) 13...c5= 14.bc6 White gets strong initiative 14...Bc6 15.Rag1 White prepares g5 (15.d5 ed5 16.Nd4 Ne5+=) 15...Kh8 (15...d5 16.g5 h5 17.Bh7 Kh8 18.Qg6 fg5 19.hg5 Bg5 20.Rg5+-) 16.g5+= Bf3 (16...h5 17.Bg6+=) 17.Nf3 f5? (better is 17...h5!?+=) 18.gh6+- gh6 White creates threats along the open g–file 19.Rg6 Rf6 (19...Kh7 20.Re6 Ng7 21.d5+-) 20.Ng5 Qb8 (20...Qc8 21.d5 Ne5 22.Rf6 Bf6 23.Ne6+-) 21.Rf6 Bf6 (21...Nef6 22.Ne6 b5 23.c5+-) 22.Ne6 Ng7 (22...b5 23.Rg1 Ng7 24.Ng7 Bg7 25.Bf5+-) 23.Bf5 (23.Ng7 Bg7 24.Bf5 Nf6+-) 23...Ne6 (23...Nf5 24.Qf5 Qg8 25.Ng5+-) 24.Be6 Nf8 25.d5 Threatening mate... how? 25...Qd8 (25...Be5 26.f4 Ne6 27.fe5+-) 26.Rg1 Ne6 27.de6 Qf8 (27...Be5 28.Be5 de5 29.Qf5+-) 28.Rg6 Bb2 29.Qb2 Kh7 30.Rf6 (30.Rf6 Qe8 31.Rf7 Qf7 32.ef7+-) 1–0. Zschalich,Arndt – Neubert,Fritz, corr DDR–ch M776, 1985.

5.g3 c6 6.a4 d5 7.e3 Nbd7 8.d4 Bb4 (8...Ne4 9.Nc3=+) 9.Bc3 Bc3 10.Nc3 Re8 11.Nf3 Qc7 (11...e5 12.cd5 cd5 13.de5 Ne5 14.Ne5 Re5 15.Qd4=) 12.c5 (12.Rc1!?=) 12...e5=+ 13.Bg2 (13.a5 ed4 14.Qd4 Ne4 15.bc6 bc6 (worse 15...Qc6 16.Bb5 Qg6 17.Nd5 Nec5 18.Rd1+=) 16.Ne4 Re4=) 13...ed4–/+ 14.Qd4 Ne4 15.Ne4 (15.0-0 Nec5 16.Rab1 Qa5–/+) 15...Re4 (worse 15...de4 16.Ng5 Qa5 17.Kf1 cb5 18.Be4=) 16.Qd3? (16.Qd1–/+) 16...Ne5?? (better 16...Nc5 17.Qd1 Qa5 18.Qd2 Qd2 19.Nd2 Ra4–+) 17.Ne5= Qe5 18.Be4?? (better 18.0-0 Rc4 19.e4=) 18...Qa1–+ 19.Qb1 (19.Kd2 Qb2 20.Qc2 Qb4 21.Ke2 Qe4 22.Qe4 de4–+) 19...Qc3 20.Ke2 Qc5 (better 20...de4 21.Qe4 Be6–+) 21.Bh7= Kh8 22.Rc1 Qd6 23.Bf5 (23.Bc2=) 23...Qh6 (23...c5 24.Bc8 Rc8 25.Qf5=) 24.Bc8 (24.bc6 bc6 25.Bc8 Rc8+=) 24...Rc8= 25.bc6 Qh5 (better 25...Rc6!? 26.Rc6 Qc6=) 26.Kf1 Qh2?? (better 26...bc6 27.Qb7 Qh3 28.Kg1 Qe6+-) 27.Ke2+- (27.Qb7?! Rf8 28.Qe7 Qh1 29.Ke2 Qc1 30.Qf8 Kh7+-; 27.cb7 Rc1 28.Qc1 Qh1 29.Ke2 Qc1 30.b8Q Kh7 31.Qa7 Qc4 32.Kd2 Qb4 33.Kd1 Qc4+-) 27...Qh5 (27...Rc6?? 28.Rh1 Rc2 29.Kd3 (29.Qc2?! Qh1 30.Qc8 Kh7+=) 29...Rf2 30.Rh2 Rh2 31.Qb7+-) 28.Kd2 Qe5 (28...bc6 29.Rh1 Qh1 30.Qh1 Kg8 31.Qb1+-) 29.Rh1 (better 29.cb7 Rc1 30.b8Q Qb8 31.Qb8 (31.Kc1?! Qb1 32.Kb1 Kh7+=) 31...Kh7 32.Kc1+-) 29...Kg8 30.Qh7 Kf8 31.Qh8 Ke7 32.Qc8 (32.Qc8 Qb2 33.Kd1 Qb1 34.Ke2 Qc2 35.Kf1 Qd3 36.Kg2 Qe4 37.Kh2 Qh7 38.Qh3 Qh3 39.Kh3 bc6 40.Rb1+-) 1–0. mario1970 (1705) – trango64, gameknot.com, 2016.

6.e3 a6 7.a4 (7.Nf3 ab5 8.cb5 Nbd7+=) 7...ab5 (7...dc4 8.Nf3+=) 8.cb5 (8.ab5 Ra1 9.Qa1 dc4=) 8...c6 (8...c5 9.Nf3–/+) 9.Rc1 (9.Nf3 Bd6+=) 9...c5 (9...e5+=) 10.d3 (10.Nf3 Bd6+=) 10...Qa5 (10...d4!? 11.Ne4 Ne4 12.de4 de3 13.Qd8 Rd8 (13...Bd8?! 14.fe3 Nd7 15.Ra1–/+) 14.fe3 Ra4–+) 11.Nf3 Nfd7 (11...Nbd7 12.Be2–/+) 12.Be2+= Bf6 (12...d4 13.ed4 Qb4 14.Rb1 cd4 15.Nd4 Qd4 16.0-0–+) 13.d4 (13.0-0 Bc3 14.Bc3 Qa4=) 13...c4 (13...cd4 14.Nd4 Nb6 15.Qc2=) 14.0-0 (14.Ba3 Rd8=) 14...Nb6 a4 becomes the focus of attention 15.Qc2 g6 (15...N8d7 16.Bd1=) 16.Rfd1 (16.Ba3 Rd8 17.Bd1 Bd7+=) 16...Qb4 (better is 16...Rd8=) 17.Nd2 (better is 17.Ra1!? Qa5 18.Ne5+=) 17...Na4–/+ 18.Ra1 (18.Rb1 Nb2 19.Rb2 Qd6–/+) 18...Qb2 19.Qb2 Nb2 20.Ra8 Nd1 21.Bd1 Nd7 22.Na4 (22.Kf1 Be7–/+) 22...b6 (22...Kg7 23.Bf3–/+) 23.Nf3 Kg7 24.Nc3 (24.Kf1 h6–/+) 24...Be7 (24...g5–/+) 25.Ne5 (25.Bc2!?–/+) 25...Ne5–+ 26.de5 Bb4 27.Na2 Ba5 28.Kf1 (28.Ra7 Rd8–+) 28...Bd7 29.Rf8 Kf8 30.Ba4 Ke7 31.Ke2 (31.h4 f6 32.ef6 Kf6–+) 31...f6 32.f4 (32.ef6 Kf6 33.f4 e5–+) 32...f5 (32...fe5 33.fe5 g5 34.Kd1–+) 33.Kd1 (33.g3 h6–+) 33...h6 34.Nc1 g5 (34...Bb4 35.Ne2–+) 35.g3 (35.Ne2 Bb4–+) 35...Be8 36.Ne2 (36.Na2 Bh5 37.Kc2 Bf3–+) 36...Bh5 37.Bc2 (37.h3 Bf3–+) 37...Bf3 38.Ba4 (38.h3 gf4 39.gf4 Bg2–+) 38...gf4 (38...g4 39.Bc2–+) 39.gf4 Kf7 40.Bc2 Kg6 41.Ba4 Kh5 42.Bc2 Kh4 43.Bf5 (43.Bb1–+) 43...ef5 44.e6 Bb4 45.e7 Be7 46.Kd2 (46.Ke1 Bb4 47.Kf1 Be2 48.Ke2 Kh3–+) 46...Bb4 47.Nc3 Bc3 48.Kc3 Kh3 49.Kd2 Kh2 50.Kc3 Kg3 51.Kd4 (51.e4 Be4 52.Kd4–+) 51...Be4 52.Ke5 c3 (52...c3 53.Kd4 c2–+) 0–1. Meybohm,Dirk – Kuhlmann,E, 1988.

6.e3 c5 7.d4 cd4 8.Qd4 dc4 9.Qd8 Rd8 10.Bc4 b6 11.Nge2 Nbd7 12.0-0 Ne5 13.Bb3 Bb7 14.a4 Nd3 15.Ba3 Nc5 16.Bc2 Bf8 17.f3 Rd2 18.Nd4 e5 19.Bc1 (19.Nb1 Rd4 20.ed4 ed4=) 19...ed4 20.Bd2 dc3 21.Bc3 Nd5 22.Bd2 Ne6 23.e4 Bc5 24.Kh1 Ne3 25.Be3 Be3 26.Rfd1 Rc8 (26...Bc5 27.Rd7 Bc8 28.Rd2+=) 27.Bb3= Nc5 28.Bc4 g6 29.g3? (29.Bd5 a5=) 29...Kg7 (29...Ne4 30.Bf7 Kh8 31.Be6–+) 30.a5? (better is 30.Bd5=) 30...Ne4–+ 31.Bd5? (better is 31.Rd7 Nf2 32.Kg2 Rc4 33.Rb7–+) 31...Nf2 32.Kg2 Nd1 33.Bb7 Rc2 34.Kf1 Nc3 35.Ra3 (35.Re1 Bc5–+) 35...ba5 36.Ra5 (36.g4 a4–+) 36...Bb6 (better is 36...Rf2 37.Kg1 Ra2 38.Kf1 Ra5–+) 37.Ra3 Nb5 (37...Nb5 38.Ra6 Rh2–+) 0–1. Satka,Martin – Timm,Christian, Brandenburg–ch Seniors, 2004.

6.e3 c6 7.a4 (7.Nf3 a6+=) 7...a6 (7...e5 8.cd5 cd5 9.d4+=) 8.Rc1 (8.Nf3 b6+=) 8...ab5 9.cb5 (9.ab5 e5+=) 9...Qb6 (9...e5 10.d4 e4 11.Nge2–/+) 10.Nf3 Nbd7 (10...c5 11.Be2+=) 11.Qc2 (11.bc6 bc6 12.Rb1 e5+=) 11...h6 (11...c5 12.Be2+=) 12.Be2 (12.bc6 bc6 13.Rb1 e5=) 12...Nc5 (12...c5 13.0-0=) 13.0-0 (13.d4 Nce4=) 13...cb5 =. Meybohm,Dirk – Schulze,Ulrich, 1988.

6.e3 Nbd7 7.Nf3 Nb6 8.cd5 ed5 9.Bd3 Re8 10.Qc2 h6 11.a4 Be6 (11...Nc4 12.Bc4 dc4 13.Ne2=) 12.Ne2 Bd6 13.0-0 (13.Ned4 Qe7+=) 13...Bg4 (13...Nc4 14.Bc3=) 14.Ned4 Ne4 15.Ne1 (15.a5 Nd7+=) 15...Bd7 16.Be4 (16.a5 Nc4 17.Bc4 dc4+=) 16...de4= (worse is 16...Re4 17.d3 Re8 18.a5+=) 17.f4 (17.f3 ef3 18.Nef3 a6=) 17...Nd5 18.Ne2 Rc8 19.Ng3 Nf6 (19...c6 20.Qc4 Qe7 21.bc6 bc6 22.Rb1+=) 20.Qb3 (20.Rb1 Qe7=) 20...Ng4 (20...c6 21.Bd4–/+) 21.Qc3 Bf8 22.h3 Nf6 23.Nc2 (23.Qc2 c6 24.b6 ab6–/+) 23...c5 (23...c6!? 24.d3 cb5–+) 24.Na3 Be6 25.f5 Bd5 26.Rf4? (better is 26.Ne2–/+) 26...Bd6–+ 27.Rg4? (27.Raf1–+) 27...Be5 28.Qc2 (28.Qe5 Re5 29.Be5 Ng4 30.hg4 Qh4–+) 28...Ng4 29.Ne4 (29.Nh5 Nf6 30.Be5 Re5 31.Ng3–+) 29...Be4 30.Qc1 Qh4 (30...Bh2 31.Kh1 Bg2 32.Kg2 Qd5 33.Kf1 Qf3 34.Ke1 Bg3) 31.hg4 (31.Qe1 Bh2 32.Kh1 Qh3 33.Qe2 Be5 34.Kg1 Qh2 35.Kf1 Qh1) 31...Qh2 (31...Bg3 32.Kf1 Bd3 33.Kg1 Qh2) 32.Kf1 (32.Kf2 Qg2 33.Ke1 Bg3 34.Kd1 Qf3) 32...Qg2 (32...Qg2 33.Ke1 Bg3 34.Kd1 Qf3) 0–1. Anderson,George – Rutter,Blair (1690), Winnipeg Remembrance op, 2003.

5.a4 ab5 6.ab5 Ra1 7.Ba1 0-0 8.e3 c6 9.Nf3 d5 10.Nc3 cb5 11.cb5 Nbd7 12.Be2 Nc5 13.0-0 Nce4 14.Qb3 Bd7 15.d3 Nc3 16.Bc3 Ne8 17.Ne5 Bf6 18.Nd7 (18.d4!? Nd6 19.Rc1+=) 18...Qd7= 19.Bb4 Be7 (19...Qb5? 20.Qa3 Nd6 21.Bd6+-) 20.d4 Bb4 21.Qb4 Nf6 22.Ra1 h6 23.Ra7 Ne4 24.Bd3 Rc8 25.Qb2 Qc7 26.g3 Nd6 27.Qb4 Nc4 28.Ra1 Qd6 29.Qd6 Nd6 30.Ra7 g6 31.h4 Rc3 32.Bf1 (better 32.Ra8!? Kg7 33.Rd8=) 32...Kg7 33.Ra2 Ne4 (better 33...Rb3!?-/+) 34.Ra7 Nd6 35.Ra2 Rb3 36.Ra7 Rc3 ½-½. bjoernsen (2370) - DeImOs1233 (2370), Rated blitz game, lichess.org, 2022.

5.a4 ab5 6.ab5 c6?? 7.Ra8+- cb5 8.cb5 Qc7 (8...Bd6 9.Na3 0-0 10.Nf3+-) 9.b6! Qc6 (9...Qb6 10.Rb8 Deflection) 10.Rb8 0-0 11.Rc8! Qc8 (11...Qc8 12.e3 Combination; 11...Rc8 12.e3 Combination) 12.Nc3 Bc5 13.Nf3 Bb6 14.e3 d5 15.d4 (15.Bd3 Nd7+-) 15...Re8 (15...Ba5 16.Qa1 Qc7 17.Bd3+-) 16.Bd3 Bc7 17.Qc2 e5 (17...Ba5 18.Ke2+-) 18.de5 Be5 19.Ne5 Re5 20.0-0 Qd7 (20...Re8 21.Ra1+-) 21.g3 d4 (21...Qd8 22.Ra1 Re8 23.Qb3+-) 22.ed4 Qd4 (22...Ra5 23.Ne4 Nd5 24.Nc5+-) 23.Ne2 (better 23.Ne4 Qd5 24.Be5 Ne8+-) 23...Re2 24.Qc8 Re8 25.Qe8! Ne8 26.Bd4 1-0. TimC (2450) - Dingo123 (2305), Rated Bullet game, lichess.org, 2015.

5.e3 Bb7 6.a4 a5 7.d4 0-0 8.Nf3 d6 9.Be2 Nbd7 10.0-0 Ne4 11.Nbd2 f5 12.Ne4 Be4 13.Nd2 Bb7 14.Bf3 Bf3 15.Qf3 Qe8 16.e4 f4 17.Qg4 Qf7 18.f3 h5 19.Qh3 g5 20.g3 Kh7 21.d5 e5?? 22.Qd7+- fg3 23.hg3 h4 24.Qf5! Qf5 25.ef5 Rf5 26.g4 Rf4 27.Ne4 Raf8 28.Kg2 R4f7 29.Bc1 Rg7 30.Be3 Bd8 31.Rae1 Re8 32.Kh3 Kg8 33.Nc3 Bf6 34.Nd1 Bd8 35.Nf2 Ree7 36.Ne4 Ref7?? 37.Rf2 Kf8 38.Ref1 Kg8 39.Bd2 Kf8 40.Nc3 Kg8 41.Na2 Kf8 42.Nc1 Kg8 43.Nb3 Kf8 44.Ba5! ba5 45.Na5 Bf6 46.Nc6+- Ke8 47.a5 Kd7 48.a6 Rf8 49.a7 Ra8 50.Ra2 Rgg8 51.Ra6 Rgc8 52.Rfa1 Bg7? 53.b6 cb6 54.Rb6 e4 55.Rb7 Rc7 56.Rc7 Kc7 57.Re1 ef3 58.Re7 Kb6 59.Rg7 Rf8 60.Rf7! Rf7 61.a8Q f2 62.Qa5 Kb7 63.Qa7 Kc8 64.Qf7 f1Q 65.Qf1 (65.Qf1 Kc7 66.Qf8 Kb6 67.Qb8 Kc5 68.Qb5) 1–0. ludice (1695) – spilkler (1685), kurnik, 2011.

5.e3 Bb7 6.Nf3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4).

5.e3 Bb7 6.Nf3 0-0 7.Be2 c5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0).

5.e3 Bb7 6.Nf3 0-0 7.Be2 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.c4 Bb7 6.Nf3 Be7 7.Be2 0-0).

5.e3 Bb7 6.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Be7).

5.e3 Bb7 6.Nf3 d5 7.Be2 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.Be2 d5).

5.Nf3 Bb7 6.e3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4).

5.Nh3 Bb7 6.Qc2 h6 7.Nc3 c6 (7...a6 8.e4=+) 8.a4 (8.e4 cb5 9.e5 Ng4 10.Nb5 Nc6=) 8...d5 9.e3 c5 10.f3 Nbd7 11.Nd1 (11.cd5 ed5 12.Be2 0-0=+) 11...e5 (better 11...Qc7!?–/+) 12.cd5= Nd5 13.Bc4 0-0 (13...Nb4 14.Qf5 Nf6 15.0-0=) 14.0-0 Nb4 15.Qc3 Bf6 (better 15...Bd6=) 16.Nhf2?? (better 16.e4+=) 16...e4–+ 17.Qb3 (17.d4 ef3 18.gf3 Bf3–+) 17...ef3 18.g3 Ne5 19.d4 (19.Be5 Be5 20.d4 Bc7 21.dc5 Qg5–+) 19...Nc4 20.Qc4 Nd5 (better 20...Bd5 21.Qc3 Qd7–+) 21.e4 Nb4 (better 21...Rc8!? 22.ed5 cd4–+ (22...Bd5?! 23.Qd3=+)) 22.dc5=+ bc5 23.e5? (better 23.Qc5!? Qe7 24.Qe7 Be7 25.Ra3=+) 23...Be7 (23...Bg5!? 24.Ne4 Bd5 25.Qc5–+) 24.Ne3 Rc8?? (24...Bg5 25.Nf5 Qd2–/+) 25.e6 (25.Rad1 Qc7 26.e6+-) 25...Qd2=+ 26.Bg7? (26.Nf5 Qg5 27.g4 Bd5=+) 26...Kg7?? (better 26...Qe3 27.Bf8 Kf8 (worse 27...Bf8 28.Qg4 Qg5 29.e7+=) 28.ef7 Rd8–+) 27.Nf5= Kf6 (better 27...Kh7 28.Ne7 Rc7=) 28.Ne7?? (28.Rad1 Bd5 29.Qg4+- (29.Rd2?? Bc4 30.Ng4 Kf5 31.Ne3 Kg5 32.Nc4 fe6–+)) 28...Rce8 (better 28...Ke7 29.Rfd1 Bd5 30.Rd2 Bc4 31.Rd7 Ke6 32.Ra7 Ra8–+) 29.Ng4 (better 29.Rad1 Qg5 30.Ng4 Kg7 31.Rd7 Re7 32.h4+-) 29...Ke7=+ 30.Nf2?? (30.Qc5 Qd6 31.Qa7 f2 32.Qf2 (32.Rf2 Qd5 33.Kf1 fe6–+) 32...fe6 33.Qb2 Qc5 34.Nf2–+) 30...Qd4 (30...fe6?! 31.Qc5 Qd6 32.Qa7–/+) 31.Qb3 (31.Rac1 Qc4 (31...fe6?! 32.Qd4 cd4 33.Rc7 Kd6 34.Rb7–/+) 32.Rc4 Kd6 33.Rd1 Bd5–+) 31...fe6 (31...Bd5 32.Qb1 fe6 33.Rd1–+) 32.Rad1 Qf6 (32...Bd5 33.Rd4 Bb3 34.Rg4–+) 33.Rfe1 Bd5! 34.Qe3?? (34.Rd5 Nd5 Combination) 34...Rc8 35.h4 (35.Rd2–+) 35...Nc2 36.Qd3 (36.Qe5 Ne1 37.Qe1 Rg8–+) 36...Ne1 37.Re1 Rcd8 (better 37...Qg7 38.g4 Rf4 39.g5–+) 38.Qe3 (38.Qa3 Qg7 39.Qc5 Ke8 40.g4–+) 38...Rc8 (38...Qd4!? 39.Qd4 cd4 40.g4–+) 39.Rd1?? (39.Qd3 Qg7 40.g4 Rf4–+) 39...Rcd8 (better 39...Rfd8!? 40.a5–+) 40.Qc5?? (40.Re1 Qd4 41.Kh1–+) 40...Kf7 (better 40...Ke8 41.Qe3–+) 41.Qa7 Kg8 42.Qb6 (42.Qe3 Qg7 43.Kh2 Rc8–+) 42...Bb3 43.Re1 (43.Rd8 Rd8 44.Ne4 Qa1 45.Kh2 Rc8–+) 43...Rb8 (better 43...Rd4 44.Qc7–+) 44.Qa5 (44.Qd6 Qg7 45.Re4 h5–+) 44...Qd4 (better 44...Qg7 45.g4 Rf4 46.b6–+) 45.Re4 (45.Qc7 Bd5 46.Qc1 Rb7–+) 45...Qa1 46.Kh2 Qf1 (better 46...Rb7 47.Qe1 Qe1 48.Re1 Ra8–+) 47.Rg4 Kh7 (47...Kf7 48.Qc7 Ke8 49.Qb8 Kf7 50.Qb7 Ke8 51.Qc8 Ke7 52.Rg7 Rf7 53.Qc7 Kf6 54.Qf7 Ke5 55.Qf4 Kd5 56.Rd7 Kc5 57.Qd4) 48.Qc7 Kh8 (48...Rf7 49.Qf7 Kh8 50.Qg7) 49.Qg7 1–0. rhometal – vaingrecsky, net–chess.com, 2019.

(--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.c4 Be7).

5.a4 d5 6.e3 0-0 7.Nf3 Nbd7 8.Be2 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 Nbd7 8.Be2).

5.e3 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 Be7).

5.Nf3 dc4 6.e3 c6 7.Bc4 cb5 8.Bb5 Bd7 9.Be2 Nc6 10.0-0 0-0 11.Nc3 a6 12.d4 Rc8 13.Rc1 Qb6 14.h3? (14.Na4) 14...Qb2 15.Ne5 Qb6 16.Na4 Qd8 17.Nd7 Qd7 (better is 17...Nd7) 18.Nb6 Qd8 19.Nc8 Qc8 20.Ba6 Qa8 21.Bb5 Qa2 (21...Bd6) 22.Bc6 bc6 23.Rc6 Nd5 24.Qd3 Qa7 25.Qb3 Rb8 26.Qc2 Nb4 27.Rc8 Bf8 28.Qc4 Rc8 29.Qc8 Nd5 30.Rb1 g6 31.Rb8 Qe7 32.e4 Nf4? (better is 32...Nf6 33.Rb7 Qa3) 33.Qc5 Qc5 34.dc5 Kg7 35.c6 Bd6 36.Rb7 Ne2 37.Kf1 Nd4 38.c7 Bc7 39.Rc7 Kf6 40.f4 Nb5 41.Rc5 Na7 42.e5 Kg7 43.Ke2 h5 44.Kd3 g5 45.Rc7 Nb5 46.Rb7 Na3 47.fg5 Kg6 48.Rb3 1–0. Wall,Bill – Antigen, playchess.com, 2012.

5.e3 0-0 6.d4+=.

5.e3 c6 6.a4 0-0 7.Nf3 a6 8.Be2 (8.d4 cb5 9.ab5 d5=) 8...Bd7 (8...e5 9.0-0=) 9.0-0 Qc7 (9...d5 10.cd5 ed5 11.Nc3=) 10.d4 (10.Qb3 b6=) 10...Rc8 (10...ab5 11.cb5 Rc8 12.Nc3=) 11.Nbd2 cb5 12.ab5 d5 (12...b6 13.ba6 Ra6 14.Ra6 Na6 15.Qb3+=) 13.c5 Ne4 (13...b6 14.ba6 b5 15.a7 Ra7 16.Ra7 Qa7 17.Qb3+=) 14.Qc2 (14.Ne4 de4 15.Nd2 f5+/–) 14...Nd2 15.Qd2 f6 (15...b6 16.Rfc1+/–) 16.Rfc1 (16.Rfb1 b6+/–) 16...g5 (16...Be8 17.Ra5+/–) 17.g3 (17.Bc3 Be8+/–) 17...Kf7 (17...Be8 18.Ne1+/–) 18.Bd3 (18.h3 Kg7+/–) 18...Rh8 (18...g4 19.Ne1+/–) 19.Qe2 h5 (19...g4 20.Nd2 f5 21.f3+/–) 20.ba6 (20.e4 h4+-) 20...ba6 21.Ba6 (21.Bc3 g4 22.Nh4 f5+/–) 21...Na6 22.Ra6 Ra6 23.Qa6 Bc8 (23...Rb8 24.Qe2+/–) 24.Qa8 (24.Qb6 Qb6 25.cb6 Bd6+/–) 24...Qb7 (24...Kg7 25.Ra1+/–) 25.Qb7 (25.Qa2 Qc6+/–) 25...Bb7 26.Ba3 (26.h3 Bc6+/–) 26...Bc6 27.Rb1 (27.Kg2 e5+=) 27...Ra8 (27...g4 28.Nd2+=) 28.Bc1 (28.Rb6 Be8 29.Bb2 g4+/–) 28...Bd8 29.Bd2 (29.h4 g4 30.Ne1 Bc7+=) 29...Bc7 30.h3 Kg7 (30...g4 31.hg4 hg4 32.Nh2+=) 31.Kg2 Kg6 32.Be1 (32.Ne1 Ra2 33.Bc3 Kf5+=) 32...Bd8 (32...g4 33.Nd2+=) 33.Ng1 (33.g4 Bc7+/–) 33...Bc7 34.Ne2 Ra2 (34...e5 35.Nc3+=) 35.Nc3 Ra8 36.Nd1 (36.f3 Ra3+/–) 36...Rb8 (36...Kf5 37.f3+=) 37.Rb8+/– Bb8 38.Ba5 Kf7 39.Bb6 (39.Nc3 Ke7+/–) 39...Ke7 40.Kg1 (40.Nc3 Kd7+/–) 40...Ke8 41.Nc3 Kd7 42.Na2 Bc7 (42...Bb5 43.f4+/–) 43.Bc7 Kc7 44.Nb4 Kb7? (44...Be8 45.g4+/–) 45.Kf1 (better is 45.Nc6 Kc6 46.h4+-) 45...Bb5+/– 46.Ke1 Kc7 (46...Kc8 47.f3+-) 47.f4 gf4 (47...g4 48.hg4 hg4 49.Kd2+/–) 48.ef4 f5 49.Kf2 Be8 50.h4 Bf7 51.Ke3 Be8 52.Kd3 Bb5 53.Kc3 Kb7 54.Nd3 Be8 55.Kb4 Ka6 56.Ne1 Kb7 57.Ka5 Ka7 58.Nf3 White gets in control 58...Kb7 59.Ng5 Bd7 60.Nf7 (60.Nh7 Be8+-) 60...Kc7 61.Ng5?? (61.Kb4 Bc6+-) 61...Kb7 62.Nh7 Be8 63.Nf6 Bf7 64.Kb5 Kc8 (64...Kc7+-) 65.Kc6 e5 66.fe5 Kd8 (66...Kb8 67.Kd7 Kb7 68.Nh5 Bh5 69.c6 Kb6 70.c7 Be8 71.Ke8 Kc7 72.Ke7+-) 67.Kd6 Kc8 68.e6 Be6 69.Ke6 Kd8 70.Kf5 (70.Kf5 Kc7 71.g4 hg4 72.Ng4+-; 70.Kd6 Kc8 71.c6 f4 72.c7 Kb7 73.Nd5 f3 74.Kd7 Ka7 75.c8Q f2 76.Qc7 Ka6 77.Qb6) 1–0. Rongen – Maalcke, Dieren, 1995.

5.e3 c6 6.a4 0-0 7.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 Nbd7).

5.e3 c6 6.a4 0-0 7.Nf3 e5 8.Nc3+=.

5.e3 c6 6.d4 d5=.

5.e3 Nbd7 6.Nf3 b6 7.a4 Bb7 8.d4 0-0 9.Be2 a6 10.0-0 ab5 11.cb5 h6 12.Qc2 Rc8 (12...Be4 13.Qc3=) 13.Rc1 c6 14.bc6 Rc6 15.Qb3 Rc1 16.Bc1 Qa8 17.Bb2 Rc8 18.Nbd2 Bd5 19.Qd1 Ne4 20.Ne1 (20.Ne4 Be4 21.Rc1 Rc1 22.Bc1 Bc6=) 20...Nd2 21.Qd2 Nf6 22.f3 Bb7 (22...Qa5 23.Qa5 ba5 24.Ba6=) 23.Bb5 Ba6 24.Qe2 Bb5 25.Qb5 Qa5 26.Kf2 (26.e4 Rc7=) 26...Ra8 (26...d5 27.Qa5 ba5 28.Ba3 Ba3 29.Ra3=) 27.Qa5= Ra5 28.Bc3 Ra6 29.Nd3 Bd8 30.Nb4 (30.e4 d5 31.e5 Nd7=) 30...Ra8 31.Nc6 Nd5 (31...d5 32.Nd8 Rd8 33.Bb4=) 32.Bd2+= Bf6 33.Ke2 Ne7 34.Nb4 Nd5 (34...d5 35.Ra2=) 35.Kd3 (35.Nd5!? ed5 36.Rb1+/-) 35...Nb4= 36.Bb4 d5 37.e4 (37.Bd6!?=) 37...de4=+ 38.fe4 1-0. ClayPigeons (2140) - OMEGA_RED (2235), Rated Bullet game, lichess.org, 2020.

5.c4 d5 6.Nc3 c6 7.a4 a6 8.Nf3 Nbd7 9.e3 Qb6 10.c5 Qa5 11.Bd3 ab5?? 12.ab5+- Qb4 13.Ra8 Qb2 14.Qc2 Qb4 15.0-0 cb5 16.Bb5 b6 17.Bd7 Bd7 18.Rf8 Bf8 19.Rb1 Qc4 20.cb6 Bb4 21.Rc1 Ba5 22.Ne5 Qb4 23.Nd7 Nd7 24.Ne2 g6?? 25.b7! Qb7 26.Qc8 Qc8 27.Rc8 Kg7 28.f4 Nf6 29.g3 Ne4 30.Nc1 Bd2= 31.Nd3 Be3–/+ 32.Kf1 Bd4 33.Ne5 Be5 34.fe5 Ng5 35.Kf2 Ne4 36.Ke3 h5 37.h4 Kh6 38.Kf4 g5 39.hg5 Ng5 40.Rh8 Kg6?? 41.Rg8+- Kh7 42.Rg5 d4 43.g4 Kh6 44.Rh5 Kg6 45.Rh2 f6 46.ef6 Kf6 47.Rh6 (47.Rh6 Kf7 48.Ke5+-) 1–0. iczker – nayronaxjm, kurnik, 2011.

5.c4 d5 6.c5 c6 7.a4 cb5 8.ab5 a6 9.b6 Nc6 10.Nf3 Ne4 11.e3 Re8 12.Nc3 Nc3 13.Bc3 Bg5 14.Bd3 g6 15.h4 Bh6 16.h5 Bg7 17.h6 Bf6 18.Ne5 Be5 19.de5 Qg5 20.Qf3 Ne5=+ 21.Be5 Qe5 22.e4?? Qa1–+ 23.Ke2 Qh1 24.ed5 ed5 25.Kd2 Qe1 26.Kc2 Qe5 0–1. iczker – wistad, kurnik, 2011.

5.c4 d5 6.e3 dc4 7.Bc4 Nbd7 8.Nc3 Nb6 9.Bd3 Nbd5 10.Nf3 Nc3 11.Bc3 Qd5 12.a4 a6 13.0-0 ab5 14.ab5 Bd7 15.Qc2 Bb5=+ 16.Bb5 Qb5 17.Rfb1 Qc6 18.Ra8 Ra8 19.Qb2 b6 20.Ne5 Qd5 21.Ra1 h6 22.Ra8 Qa8 23.Qa1 Qa1 24.Ba1 Kf8 25.Nc6 Bd6 26.f3 Ke8 27.h4 Kd7 28.Nb8 Kc8 29.Na6? Kb7 30.Nc7 Kc7 31.Kf2 b5 32.e4 Ba3 33.Ke3 b4 34.g4 b3 35.Kd3 b2 (35...b2 36.Bb2 Bb2–+) 0–1. iczker – kesi1, kurnik, 2011.

5.a4 c6 6.c4 cb5 7.cb5 a6 8.Nc3 ab5 9.ab5 Ra1 10.Qa1 b6 (10...d5 11.Nf3=) 11.Nf3 (11.Qa7!? Bd6 12.Na4+-) 11...Bb7 12.Be2 d5 13.0-0 Nbd7 14.d4 Bb4 15.Ba3 Ba3 16.Qa3 Qa8 17.Ra1 Qa3 18.Ra3 Ra8 19.Ra8 Ba8 20.Nd2 Ne8 21.f3 Nd6 22.Bd3 Nf6 (22...e5 23.Kf2+=) 23.Na4 (23.e4 de4 24.fe4 Nd7+=) 23...Nd7+= 24.Nc3 (24.Kf2 f6+=) 24...Bb7 (24...Nf6 25.e4 de4 26.fe4+=) 25.e4 (25.Kf2 e5+=) 25...de4 (25...e5 26.Nd5 ed4 27.Nb3=) 26.fe4+= Bc8 (26...e5 27.d5+=) 27.Kf2 (27.e5 Nb7 28.Nc4+-) 27...f5? (better 27...e5!? 28.Ke3 f6+=) 28.e5 (28.Nc4 Nc4 29.Bc4 fe4 30.Be6 Kf8+-) 28...Nf7 (28...Nb7 29.Nc4+-) 29.Bc4 (29.Nc4 Bb7+-) 29...Nd8 30.Nf3 (30.Na4 Bb7+-) 30...h6+- 31.d5 Nc5 (31...Kf7 32.h4+-) 32.d6 Kf7 33.Ke3 Bb7 34.Nd4 (34.Kd4 Bf3 35.gf3 g5+-) 34...Bg2?? (better 34...Nd7 35.Nf5 Ne5=) 35.Nf5+- h5 (35...Ndb7 36.Ne2 Bf1 37.Nfd4+-) 36.Nd4 (36.h4!? Ndb7+-) 36...g5+- 37.Be2 g4 (37...Kg6 38.Bd1+-) 38.Kf4 Kg6 39.Bd1 Nf7 40.Bc2 Kg7 (40...Kh6 41.Na4 Nd7 42.Nf5 ef5 43.e6+-) 41.Nc6 (41.Na4 Nd7 42.Ne6 Kh8 43.Nc7 Nde5 44.Nb6+-) 41...Bf3 42.Ne4 Be4 43.Be4 Nd7 (43...h4 44.Bg2 g3 45.hg3 Nd3 46.Ke4+-) 44.Bd3+- Nc5 45.Bc4 Kg6 (45...Kf8 46.Nd4 Nd8 47.Kg3+-) 46.Ne7 Kh6 (46...Kg7 47.Nc8+-) 47.Nc8 Nd7 (47...h4 48.Nb6 g3 49.hg3+-) 48.Be6 Nde5 49.Nb6 (better 49.d7!? Nd3 50.Kf5 Nd8+-) 49...Nd3?? (better 49...Ng6 50.Ke3 Nd6=) 50.Ke3 Nd6 51.Kd3 Nb5 52.Ke3 (52.Bd7!? Nd6+-) 52...Kg5 53.Nd5 Nd6 54.Nc3 h4 55.Bd5 g3 56.h3 Nf5 57.Kd3 Kf4 58.Ne2 Kg5 59.Ke4 Ne7 60.Ng1 Nd5 61.Nf3 Kf6 62.Kd5 g2 63.Ke4 Kg6 (63...Kg7 64.Kd4+-) 64.Nh4 Kh5 65.Ng2 (65.Ng2 Kg5 66.h4 Kh5 67.Ke5+-) 1–0. BeepBeepImAJeep – MariusCiprian1 (1805), IM BeepBeepImAJeep simul, 2017.

5.a4 Nd5 6.c4 Nf6 7.Nf3 Ne8 (7...a6 8.Nc3=) 8.Be2 Bf6 (8...d5 9.0-0=) 9.Nc3 Nd6 (9...d5 10.cd5 ed5 11.d4+=) 10.Qc2 a6 11.0-0 ab5 (11...b6 12.e4 Bc3 13.Bc3+=) 12.ab5+/– Ra1 13.Ra1 c6 (better is 13...b6!?+/–) 14.Ra8+- Qc7 15.e4 cb5 (15...b6 16.e5 Be5 17.Ne5+-) 16.e5 (16.e5 Be5 17.Ne5+-) 1–0. GuestDPNV – GuestPFQS, freechess.org, 2017.

5.c4 b6 6.Be2 Bb7 7.Bf3 d5 8.Ne2 Nbd7 9.d3 Qc8 10.Nbc3 (better 10.cd5!? Bd5 11.Bd5 ed5 12.0-0=) 10...dc4-/+ 11.dc4 Bf3 12.gf3 Nc5 (12...Ne5!?-+) 13.Rg1 Qb7 (13...Rd8 14.Nd4 e5 15.Nd5 Rd5 16.cd5 ed4 17.Bd4-/+) 14.Nd4= Rfd8 15.Qc2 Kf8 16.Nc6 Rd6 17.Rd1 Rd1 18.Qd1 Bd6 19.h4 a6 20.a4 ab5 21.ab5 Ncd7 22.Ke2 Ne5 23.Ne4 Nc4?? (better 23...Nc6 24.Nd6 cd6 25.Bf6 gf6 26.bc6 Ra2 27.Kf1 Qc6-+) 24.Bf6+- gf6 25.Nf6 Ra2 26.Kf1 Nd2 27.Qd2!! Ra1 (27...Rd2 28.Rg8 Mate attack) 28.Kg2 Rg1 29.Kg1 Qa8 30.Nh7 (better 30.Qd4!? Qa2 31.Nh7 Kg8 32.Nf6 Kh8+-) 30...Kg7 31.Ng5 Qa1 32.Kg2 Qb1 (32...Qf6+-) 33.Qd4 e5 34.Qc4 (better 34.Ne5 Qf5 35.Nef7 Qf6+-) 34...Qf5 (34...Qg6 35.Qg4 f5 36.Qg3+-) 35.Qg4 Qg4 36.fg4 f6 37.Ne4 Bb4 (37...Ba3 38.f4 ef4 39.ef4+-) 38.f4 White intends g5 (better 38.Nb4 Kg6 39.h5 Kh6+-) 38...ef4 (38...Ba3 39.fe5 fe5 40.Ne5+-) 39.ef4 (better 39.Nb4 fe3 40.Nd5 Kf7+-) 39...Ba3 40.f5 Bc1 41.Kf3 Kf7 42.g5 (better 42.Nd8!? Kg7+-) 42...fg5 43.hg5 Bg5 (43...Bb2+-) 44.Ng5 Kf6 45.Kf4 (45.Kf4 Kg7 46.Ne4 Kf7 47.f6 Ke6 48.Ne5 c5 49.bc6 b5 50.c7 Kd5 51.c8Q b4 52.Qd7) 1-0. bjoernsen (2355) - coachidfparis (2325), Rated blitz game, lichess.org, 2022.

5.c4 b6 6.Nf3 Bb7 7.Be2 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.Be2).

5.c4 c5 6.Nc3 d5 7.d3 (7.d4 Nbd7=) 7...b6 8.Nf3 Bb7 9.Qb3 Nbd7 10.Be2 Qc7 11.0-0 a5 12.h3 Rfd8 13.Na4 Rac8 14.Rac1 dc4 15.Qc4 Bd5 16.Qc2 e5 17.a3 Bb7 18.e4 Bd6 19.Nh4 g6 20.Nf3 Nf8 21.Nd2 Ne6 22.Nc4 Nd4? (22...Nd7!?+=) 23.Bd4+/- cd4 24.Nab6 Rb8 (24...Ba3 25.Nc8 Bc1 26.Qc1 Rc8 27.Qg5+/-) 25.Na4 Qe7 26.Nd6 Qd6 27.Qc5 Qc5 28.Rc5 Nd7 29.Rc7 Kf8 30.Rfc1 Ke8 31.Bg4 Nf6 (31...h5 32.Bd7 Rd7 33.b6+-) 32.Bd1 (32.R1c5 Ng4 33.hg4 Rd7 34.Re5 Kd8 35.Rd7 Kd7 36.Nb6 Kd8+-) 32...Rdc8 33.Bb3 Rc7 34.Rc7 Nd7 35.Bf7! Kd8 (35...Kf7 36.Rd7 Deflection (36.Rd7 Overloading)) 36.Rc2 Rc8 37.Rc8 Bc8 38.Be6 Nb6? (38...h6+-) 39.Nb6 Be6 40.Nc4 Bc4 (40...Kc7 41.Ne5 Kb6 42.a4+-) 41.dc4 a4 42.c5 Kc7 (42...g5 43.g3+-) 43.Kf1 g5 44.g3 h5 45.Ke2 Kb7 46.Kd3 Kc7 47.f4! ef4 (47...ef4 48.b6 Double attack (48.Kd4 Deflection); 47...gf4 48.gf4 Combination) 48.gf4 g4 49.hg4 hg4 (49...h4 50.b6 Kc6+-) 50.e5 (better 50.Kd4 Kd7 51.Ke3+-) 50...g3 51.Ke2?? (better 51.b6 Kb7 52.e6+- (52.Kd4?? g2-+)) 51...d3!-+ 52.Kd3 g2 53.e6 g1Q 54.e7 (54.Kc4 Qc1 55.Kd5 Qd2 56.Ke4 Qe2 57.Kf5 Qb5-+) 54...Kd7 (54...Qb1 55.Kc4 Qb3 56.Kd4 Qb5 57.f5 Qd7 58.Kc4-+) 55.c6 (55.Kc4 Ke7 56.Kb4 Qd4 57.Ka5 Qc5 58.f5 Kd6 59.f6 Qc3 60.Ka6 Qc8 61.Ka5 Kc5 62.Ka4 Qe6 63.b6 Qc4 64.Ka5 Qb5) 55...Ke7 56.c7 Kd7 0-1. bjoernsen (2385) - Kasparov_2020 (2455), Rated blitz game, lichess.org, 2021.

5.c4 c5 6.Nf3 b6 7.Be2 Bb7 8.0-0 d6 9.d4 d5 10.Nbd2 (10.dc5 Bc5 11.cd5 Nd5=) 10...Ne4 (10...a6 11.dc5 Bc5 12.Nb3=) 11.Ne4 (11.cd5 ed5 12.dc5 bc5 13.Ne4 de4+=) 11...de4= 12.Ne5 (12.Nd2=) 12...Bf6 (better is 12...f6!? 13.dc5 bc5+=) 13.Qc2 (13.dc5 bc5 14.Qd8 Bd8+=) 13...Be5 (13...cd4 14.Bd4 Qc7 15.Qb2+=) 14.de5 Qg5 (14...a6+=) 15.g3 (15.Rfd1 Rd8+/–) 15...Qg6 (15...Nd7!?=) 16.Rad1 (better is 16.Rfd1+/–) 16...a5? (better is 16...Qg5!?+=) 17.Rd6+- Qg5 (17...Ra7 18.Rb6 Rd8 19.Rd1+-) 18.Rfd1 g6 (18...Ra7 19.Rb6 Ba8 20.Rbd6+-) 19.h4 Qe7 20.R1d2 (better is 20.Rb6!? a4 21.Rbd6+-) 20...Qc7+/– 21.a4 Kg7 22.Qd1 Ra7 (22...h6 23.h5+-) 23.f3 (23.h5!?+-) 23...ef3 24.Bf3 Bf3 (better is 24...Kg8+/–) 25.Qf3+- Qb7 (25...Qe7 26.Qf6 Kh6 27.Rb6+-) 26.Qf6 Kg8 27.Rd8 Qc7?? (27...Nd7 28.R8d7 Qd7 29.Rd7 Rd7+-) 28.Rf8 Kf8 29.Rd8 Qd8 30.Qd8 Kg7 31.Qb8 Rd7 32.Bc3 (32.Qb6!? Rd1 33.Kf2 Rd2 34.Kf3 Rb2 35.Qa5 g5+-) 32...Rd1 33.Kf2 Rc1 34.Bd2 Rc2 (34...Rc4 35.Qb6 h5 36.Qa5+-) 35.Qd6 (better is 35.Ke2 Rc4 36.Qb6 Ra4 37.Qc5 Ra2+-) 35...Rc4 36.Kf3 (36.e4 Rc2+-) 36...Ra4 37.e4 (37.Qb6 c4+-) 37...Ra3 38.Kg4 h5 39.Kf4 (better is 39.Kh3!? Rf3+-) 39...Ra2 40.Qd8 (40.Be3 Ra1+-) 40...a4 (40...c4 41.Be3 Ra1 42.Qf6 Kg8 43.Kg5 Ra3 44.Kh6 Re3 45.Qd8) 41.Kf3 Ra3 42.Kg2 (better is 42.Ke2 Ra2 43.Kd3 c4 44.Kc4 Rd2 45.Qd2+-) 42...Rb3 (42...Ra2+-) 43.Bg5 (43.Bh6 Kh7 44.Qf8 Rb2 45.Kh3 Rh2 46.Kh2 a3 47.Qg7) 43...Rb2 44.Kh3 a3 (44...Kh7 45.Bf6 Rh2 46.Kh2 g5 47.Qh8 Kg6 48.Qg7) 45.Bf6 Kh7 (45...Kh6 46.Qh8) 1–0. GuestFRGY – GuestZPDV, freechess.org, 2016.

5.c4 d5 6.Nf3 c5 (without 7.bc6) (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0).

5.c4 Ne8 6.Nf3 Bf6 7.d4 b6 8.Be2 Bb7 9.Qc2 g6 (9...Be7 10.0-0+=) 10.Nbd2 d5 (10...a6 11.0-0+=) 11.e4 (11.cd5 ed5 12.Rc1 Qe7+/–) 11...de4+= 12.Ne4 Be4 (12...Bg7!?+=) 13.Qe4+/– Nd7 14.Ne5 Nd6 15.Qf3 (15.Qc6 Ne5 16.de5 Bg7+/–) 15...Ne5 (15...Bg7 16.Qf4+/–) 16.de5 Nf5?? (better is 16...Bg7+/–) 17.ef6 1–0. GuestPHHT – GuestSTZQ, freechess.org, 2017.

5.c4 Ne8 6.Nf3 g6 7.Be2+= Bf6 (7...a6 8.0-0+=) 8.d4 Ng7 9.0-0 d6 10.Qc2 Nd7 11.Nbd2 b6 (11...a6 12.Rfc1+/–) 12.e4 (12.Qe4 Rb8+/–) 12...Bb7 13.e5 Be7 14.ed6 cd6 15.Rfe1 Nf5 16.a4 Bf6 (16...d5 17.Ne5=) 17.Ne4 d5? (better is 17...Bg7!?+=) 18.Nf6+/– Nf6 19.Ne5 (19.c5 a6+-) 19...Qc7? (19...dc4 20.Bc4 Rc8 21.Qd2+=) 20.Qc3 (better is 20.c5!?+-) 20...Ne4 21.Qb4 Ned6 (21...f6 22.Nf3+=) 22.cd5 (22.c5!? Ne4 23.c6+-) 22...Bd5+= 23.Rac1 Qb7? (23...Qe7 24.g4 Ng7 25.Bc4 Bc4 26.Nc4+/– (26.Rc4 a5 27.ba6 Rfd8+/–)) 24.Nc6?? (24.g4 Qe7 25.gf5 Qg5 26.Bg4 Nf5+-) 24...Kg7? (24...Qd7 25.Rc2+=) 25.Bg4?? (25.g4 Rfc8+-) 25...Nh6? (better is 25...Rfc8=) 26.Bf3+- (26.Qd6?! Ng4 27.Re2 Rfc8+=) 26...Nhf5 (26...Bf3 27.d5 (27.Qd6?! Bd5+/–) 27...f6 28.gf3+- (28.Qd6?! Bd5 29.Nd4 Rac8+/–)) 27.Bd5 ed5 28.g4 Nh4 (28...a5 29.Qb3 Nh6 30.Qd5+-) 29.Re7 Qc8 30.h3 (better is 30.Qd6 Qg4 31.Qg3 Nf3 32.Kg2+-) 30...Ne4 0–1. GuestBJCS – GuestYFHT, freechess.org, 2017.

5.c4 h6 6.Nf3= a6 7.d4=.

5.c4 h6 6.Nf3 c6 7.a4 a6 (7...d5 8.Be2=) 8.Nc3 Bb4 (8...d5 9.cd5 cd5 10.Be2=) 9.Be2+= Bc3 (9...ab5 10.ab5 (worse is 10.cb5 d5=) 10...Ra1 11.Qa1 cb5 12.Nb5+=) 10.Bc3+/– d5 11.0-0 dc4 12.Bc4 cb5 13.ab5 Nbd7 14.d3 (14.ba6 ba6 15.Ba5 Qe7+-) 14...Nb6 15.Qb3 Nc4 16.dc4 Bd7 (16...Ne4 17.Rfd1 Qe7 18.Bb4+-) 17.Rfd1+- Qb6?? (better is 17...Qc7 18.Be5 Qc8+-) 18.Bf6 gf6 19.Rd7 Qd6 (19...ab5 20.Rb1 Rfd8 21.Rd8 Qd8 22.cb5 Rc8+-) 20.Rd6 1–0. GuestWHFN – GuestVVGM, freechess.org, 2017.

5.c4 h6 6.Nf3 d5 7.Nc3+=.

5.c4 h6 6.Nf3= Nh7 7.d4 d6 (7...a6 8.Bd3=) 8.a4 Bf6 (8...d5 9.Qc2+=) 9.Nbd2 c5 10.Qc2 cd4 11.Nd4 e5 12.N4f3 Be6 13.Bd3 Ng5 14.Ng5 Bg5 15.Bh7 Kh8 16.Be4 Qc8 17.0-0 f5 18.Bd3 e4 19.Be2 d5 (19...Nd7 20.a5+=) 20.Rac1 Qd7 21.cd5 Bd5 22.Bd4 b6 23.Qc7 (23.Rfd1 Rd8+/–) 23...f4 (23...Bf6 24.Bf6 Rf6 25.Rfd1+/–) 24.ef4 (24.f3 fe3 25.Ne4 Be4 26.Qd7 Nd7 27.fe4 Nf6+/–) 24...Bf4+= (worse is 24...Rf4 25.Qc8 Qc8 26.Rc8 Kh7 27.f3+-) 25.Qd7 Nd7 26.Be3 Be5 (26...Be3 27.fe3 Rf1 28.Kf1=) 27.Nc4 Bc4 28.Rc4 Nc5 (28...Nf6 29.f4 ef3 30.Bf3+=) 29.Bc5 bc5 30.Re4 Bd4 31.Bc4 a6? (better is 31...Rae8 32.Re8 Re8+/–) 32.ba6+- Ra7 33.Re2 Rfa8 (33...Rb8 34.h4+-) 34.Rfe1 Ra6 (34...Kh7 35.h4+-) 35.Ba6 (35.Re8 Kh7 36.Bd3 g6 37.R8e7 Bg7 38.Ba6 Ra6+-) 35...Ra6 36.Re8 (better is 36.Ra2+-) 36...Kh7+/– 37.R1e7 (37.Kf1 Ra4 38.f4 c4+/–) 37...Ra4 38.g3 Ra2 (38...c4 39.Re2+/–) 39.Rf7 (39.Re2 Ra4+/–) 39...Ra4 (39...c4 40.Re4 Rd2 41.Rff4+/–) 40.Kg2 Bb2 (40...Ra2 41.g4+/–) 41.Rff8 c4? (41...Bf6 42.f4 Kg6 43.Kf3+/–) 42.Rh8 (42.Re4 Kg6+-) 42...Kg6 43.Re6?? (43.Re4 Bf6+-) 43...Kf7? (43...Kf5 44.Re7 Bf6 45.Rf8+-) 44.Rb6?? (better is 44.Re4+-) 44...c3 (better is 44...Bd4 45.Rb7 Ke6 46.Re8 Kd6 47.Rd8 Kc6+/–) 45.Rhb8?? (45.Rb7 Kf6 46.Rf8 Kg6+/–) 45...Rc4?? (better is 45...c2 46.R8b7 Kg8–+) 46.Rb2 cb2 47.Rb2 Kg8 (47...g5 48.h3+/–) 48.Rb7 Kh7 49.Kf3 Ra4 50.h4 Rc4 (50...h5 51.Rd7+/–) 51.Ke3 (51.h5 Rc2+-) 51...Ra4 (51...h5 52.f3+/–) 52.f3 (52.h5 Ra5 53.g4 Ra3 54.Kf4 Ra4 55.Kg3 Ra3 56.f3 Rd3+-) 52...Rc4 (52...Ra3 53.Ke4 Ra4 54.Kf5 Ra5 55.Kg4 h5 56.Kf4 Ra4 57.Kf5 Ra5 58.Ke4 Ra4 59.Ke5 Ra3+/–) 53.g4 (53.h5 Rc3 54.Ke4 Rc4 55.Kd3 Rc1+-) 53...Ra4 (53...h5 54.gh5 Rh4 55.f4+=) 54.g5 (54.h5 Ra3 55.Kf4 Ra4 56.Kg3 Ra3+-) 54...Rc4? (better is 54...Rh4!? 55.gh6 Kh6=) 55.Rb6+/– Rh4?? (better is 55...hg5 56.hg5 Rc3 57.Ke4 Rc4 58.Kd3 Ra4+/–) 56.g6 (56.g6 Kg8 57.Rb8) 1–0. GuestMKNW – GuestGPGV, freechess.org, 2017.

5.Bd3 c5 6.Nh3 d5 7.c4 d4 8.e4 e5 9.Ng5 Nbd7 10.f4 h6 11.Nh3 ef4 12.Nf4 Ne5 13.Qe2 Bg4 14.Qf2? g5 15.Bc2 Nc4 16.Nd3 Ne4 17.Qf1 Qa5 18.Bc1 Ne3 19.Bb3 Nf1 20.Rf1 Bd6 21.h3 Bg3 22.Nf2 Bh5 23.Bc4 Rae8 24.a4 Nc3 25.Be2 Re2# 0–1. tschulz – Lanzelot, mySchach.de, 2004.

5.Bd3 d6 6.Nf3+=.

5.Bd3 h6 6.Nf3= b6 (6...a6 7.a4=) 7.g4 (7.0-0 a6=) 7...Bb7 (7...Ng4!? 8.Bg7 Kg7+=) 8.g5= hg5 9.Ng5 Bh1?? (9...e5 10.Be5 Re8+/–) 10.Bf6 g6 (10...Bc5 11.Qh5 Be4 12.Be4 Re8 13.Qf7 Kh8 14.Qg7) 11.Qh5!! (11.Qh5 gh5 12.Bh7) 1–0. Chernisher – Les, USSR, 1970.

5.Be2 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Be2 0-0).

5.Ne2 d5 6.Ng3 c5 7.Be2 c4 8.0-0 Bd7 9.a4 Qa5 (9...a6 10.Nc3=) 10.d3 cd3 11.cd3 Opening the c–file gets White a lot of play 11...Qd8 12.Nc3 a6 13.h3 ab5 14.ab5 Ra1 15.Qa1 Qe8 (15...e5 16.Bf3 d4 17.ed4 ed4 18.Nce2 Bb5 19.Nd4+- (worse 19.Bd4 Bd3 20.Bb7 Qd7=)) 16.Qa7 (16.d4 Bd6+=) 16...Bb5= 17.Qb7 Bc6 18.Qa7 Nbd7 19.Ra1 Bb4 (19...Qb8 20.Nd1=) 20.Qc7 Bc3 (20...Qc8!? 21.Qf4 Qb8=) 21.Bc3+- Qc8 22.Ra7 Nc5?? (better 22...Bb5+-) 23.Bf6+- gf6 24.Qf4 Qd8 25.Rc7 (25.Nh5 Kh8 26.Qh6 Rg8 27.Rf7 Rg2 28.Kg2 d4 29.Kf1 Bg2 30.Kg1 Qg8 31.Qf6 Qg7 32.Qg7) 25...e5 (25...Nd7 26.Rc6 Qe7 27.Rc7+-) 26.Qg4 (26.Qh6 Ne6 27.Nh5 Kh8 28.Nf6 Qf6 29.Qf6 Ng7 30.Rc6 d4+-) 26...Kh8 27.Rc6 Rg8 28.Qf5 (28.Qh5!? Qe7+-) 28...Ne6 29.Nh5 Rg6 30.d4 ed4 31.ed4 (31.Ba6 de3 32.Rc8 Qc8 33.Bc8 e2+-) 31...Nd4 (31...Qg8 32.Qd5 Nd4 33.Nf4 Nc6 34.Ng6 fg6 35.Qc6+-) 32.Rc8 Nf5 33.Rd8 Rg8 34.Rg8 (34.Rd5 Nh4+-) 34...Kg8 35.Nf6 Kg7 36.Nd5 Nd4 37.Kf1 Ne2 38.Ke2 (38.Ke2 Kg6 39.Ke3+-) 1–0. aravind555 (1820) – Mantom (1800), lichess.org, 2020.

5.Nf3 Nd5 6.c4 Nb6 7.a4 d6 8.a5+= N6d7 9.d4 Bf6 (9...a6 10.Bd3+=) 10.Qc2 (10.Nc3 a6 11.Bd3 c6+-) 10...c5 (10...e5 11.Nc3+-) 11.Bd3 h6 12.0-0 cd4 13.ed4 Re8 (13...Be7 14.Nc3+-) 14.Bh7 (14.Nc3 Be7+-) 14...Kh8+- 15.Bd3 Kg8 16.a6 1–0. GuestMLSN – GuestTSPB, freechess.org, 2020.

5.Nf3 Ne8 6.d4 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 10.c4 d5 11.Nbd2 (11.Nc3 Nd6 12.cd5 ed5=) 11...Bb4 (11...dc4 12.Nc4 cb5 13.Ncd2=) 12.cd5 (12.Qa4 Bd2 13.Nd2 Bd7+=) 12...ed5= 13.Bd3 Bg4 (13...Nf6 14.0-0=) 14.Bh7+= Kh8 15.Bd3 Bd2 (15...Nd6 16.bc6 Nc4 17.Qa4 Nc6 18.Bc4 Bf3 19.gf3 dc4 20.Ke2=) 16.Qd2+- Bf3 17.gf3 Qg5 (17...Nd6!?+-) 18.Qb4+- Kg8 (18...Nd7 19.bc6 bc6 20.Ke2+-) 19.Bh7! Kh7 20.Qf8 Qg2 (20...Qf5 21.Kd2 Qf3 22.Rf1+- (22.Qe8?! Qh1 23.Bc3 Qh2+=)) 21.Rf1 (21.Rf1 Qg6 22.Kd2+- (22.Qe8?! Qb1 23.Kd2 Qa2 24.Kc3 Qc4 25.Kb2 Qb5 26.Kc2 Qe2 27.Kb3 Qc4 28.Kb2 Qb5 29.Ka2 Qc4 30.Kb2 Qb5=); 21.Qe8 Qh1 22.Ke2 Qa1=) 1–0. DEFFM – GuestCVCL, freechess.org, 2020.

5.Nf3 g6 6.d4 Nh5 (6...d5!?=) 7.Bd3 Ng7 (7...a6 8.a4=) 8.0-0 (8.c4 a6+=) 8...d6 (8...a6 9.a4+=) 9.c4 (9.Nc3 Nd7+-) 9...Nd7 10.Nbd2 Rb8 11.a4 (11.g3 c5+-) 11...a6 (11...a5 12.Qc2+-) 12.Qb3 (12.h3 a5+-) 12...a5 13.Qc2 b6 14.e4 Bb7 15.Rfe1 Nh5 16.Nf1 (16.Rad1 Qe8+-) 16...Bg5 (16...Nf4!?=) 17.Ng5 Qg5 18.Bc1 (18.g3+=) 18...Qg4 (better 18...Qf6!? 19.Qb2 Nf4 20.Bf4 Qf4=) 19.Ne3+- Qh4 20.g3 Qd8 21.Ng2 (21.Ng4 Qe7+-) 21...Ndf6 (21...e5 22.Bb2+=) 22.Bh6 (22.Bb2 Nd7+-) 22...Ng7 (22...Re8 23.Ne3+-) 23.e5 (23.Ne3 e5 24.de5 de5+-) 23...de5 24.de5 Nd7 25.Bg7 (25.h4!?+-) 25...Kg7= 26.Nf4 Qg5 27.Qe2 Rbd8 28.Be4 (28.Rad1=) 28...Bc8 (28...Be4!? 29.Qe4 Nc5–/+) 29.Bc6 (29.Nd3!?+=) 29...Nc5= 30.Nh3 Qe7 31.Rad1 (31.Qe3 Rd3 32.Qe2 Rfd8=+) 31...Bd7 (31...Na4 32.Qg4–/+) 32.Bd7 (32.Bf3 Na4 33.Qe3 Bc8=+) 32...Nd7 (32...Rd7 33.Rd7 Qd7 34.Rd1–/+) 33.Qc2 Nc5 0–1. GuestPPCY – GuestTWGS, freechess.org, 2019.

5.f4 a6 6.a4 b6 7.Qf3 d5 8.Nc3+=.

5.f4 a6 6.a4 d6 7.Nf3 Nbd7 (7...Ne4 8.d3 Bh4 9.g3+=) 8.Be2= Nc5 (8...Ne4 9.0-0=) 9.0-0 Bd7 (9...Nd5 10.c4 Nf6 11.Nc3=) 10.c4 (10.Nc3 ab5 11.ab5 Ra1 12.Qa1 c6=) 10...ab5 11.ab5 Ra1 12.Ba1 Qa8 (12...d5 13.Qc2 Bd6 14.Be5+=) 13.Nc3 (13.Bf6 Bf6 14.d4 Na4+=) 13...Qa3= 14.Qc2 Qb3 15.Bd1 (15.Qb2 Ra8=) 15...Qc2 (better is 15...Qc4!? 16.d4 Ra8+=) 16.Bc2+= b6 (16...d5 17.d4 Nce4 18.Ne4 Ne4 19.Be4 de4 20.Ne5=) 17.Bb2 (17.d4 Nb7+/–) 17...Nb7 (17...d5 18.Ne5 dc4 19.Nc4=) 18.Ne4 (18.Ra1 Na5 19.d3 c6+=) 18...Na5 (18...Ne4!? 19.Be4 d5 20.cd5 Bb5=) 19.Nf6+/– Bf6 20.Bf6 gf6 21.Bd3 (21.d3 Ra8+/–) 21...Ra8 (21...c6 22.bc6 Bc6 23.Nd4+=) 22.Ra1 Re8 (22...c6 23.Be2+=) 23.Be2+/– e5 24.g3 (24.Kf2 e4 25.Nd4 Be6+/–) 24...Bg4= 25.fe5 (25.Ra4 Nb3=) 25...fe5 26.Ra4 Nb3 27.d3 Nc5 (27...Nc1 28.Kf2=) 28.Ra3 (28.Ra7 Nd3 29.Bd3 e4+=) 28...e4= 29.de4 Re4 (29...Ne4 30.Kg2=) 30.Kf2 Bf3 (30...f5 31.Ng5 Re7 32.h3 Be2 33.Ke2=) 31.Kf3+= (worse is 31.Bf3 Rc4 32.Ra7 Nd3 33.Ke2 Ne5–/+) 31...Re7 32.Bd3 Nd7 (32...Nd3 33.Rd3 f5 34.Rd4+=) 33.Bf1 (33.g4 Ne5 34.Kf4 Kg7+=) 33...Kg7 (33...Ne5 34.Kf4=) 34.Ra7 (34.Kf4 Ne5+=) 34...Ne5= 35.Kf4 Re6 36.Bh3 Re7 37.Bf1 h6 (37...f5 38.h3=) 38.h4 (38.g4 Ng6 39.Kf3 Kf6=) 38...Kf6 (38...f5 39.Ra8=) 39.Ra8 Kg7 40.Ra7 Ng6 41.Kf3 Kf6 42.Ra8 Re5 43.Bd3 (43.Be2 Ke6+=). De Cat,Ben – Valjodov,T, Brugge op, 1997.

5.f4 a6 6.Nf3+=.

5.f4 b6 6.Be2 Bb7 7.Nf3 (--> 4.e3 b6 5.f4 0-0 6.Nf3 Bb7 7.Be2).

5.f4 c5 6.Nf3= a6 7.Nc3 d6 (7...d5 8.ba6 Na6 9.Be2=) 8.a4 (8.ba6 Na6 9.Be2 d5=) 8...Nbd7 (8...b6 9.Be2=) 9.Be2 ab5 (9...b6 10.0-0=) 10.ab5 Ra1 11.Qa1 Nb6 (11...e5 12.fe5 Ne5 13.e4=) 12.0-0 Bd7 (12...d5 13.Qe1=) 13.e4 Qa8 (13...d5 14.e5 Ne4 15.Ba3=) 14.g3 (14.Qb1 Rd8=) 14...Qa1 (14...Qd8!?=) 15.Ra1+= Ra8 16.Ra8 Na8 17.e5 Ne8 18.Ba3 (18.h3 d5+=) 18...d5 (18...b6 19.d4+=) 19.d4 cd4 20.Be7 (20.Nb1 Bd8 21.Bc5 Nb6 22.Nd4 f6+=) 20...dc3 21.Bd8 Nec7 (21...Nac7 22.Nd4+=) 22.Nd4 Kf8 (22...Bc8 23.Kf2+=) 23.b6+/– Ne8 (23...Nb6 Theme: Deflection from c7 24.Bc7) 24.Bb5 (24.Bd3 h6+/–) 24...Bc8 (24...Bb5!? 25.Nb5 Kg8+/–) 25.Kf2 f6 26.Ke3 fe5 27.fe5 g6 28.Kd3 Ng7 29.g4 Kf7 30.Kc3+- h6 31.Kb4 Ne8 32.Kc5 Kf8 33.Bd3 Kf7 34.Nb5 g5 35.Nd6 Nd6 36.Kd6 Ke8 37.Bc7 Kf7 38.Bb5 (38.Bb5 Kf8 39.Bd7 Bd7 40.Kd7+-) 1–0. Crowl – Erskine, Victoria ch, 1946.

6.a4 ab5 7.ab5 Ra1 8.Ba1 b6 9.Nc3 Bb7 10.Nf3 d5 11.Be2 Nbd7 12.0-0 dc4 13.Bc4 Nc5 14.d4 Nce4 15.Ne5 Nc3 16.Bc3 Nd5 17.Bd2 Bd6 18.f4 f6 19.Nf3 Qe7 20.Qb3 Kh8 21.g3 Ra8 22.Bc1 Qf7 (better 22...c6=) 23.e4+/- Ne7? (better 23...Nb4 24.Bd2 Qf8+/-) 24.Be6+- Qh5 25.Kg2?? (better 25.e5+-) 25...Be4= 26.g4 Qe8 27.Re1 Bb7 28.d5 (28.f5 Ra5 29.Bc4 c6=+) 28...Qf8 (28...Ra5 29.Nd4 Nd5 30.Kf1-/+) 29.Bb2 (29.f5!?=) 29...Ng6 30.f5 Nf4 31.Kh1 Ne6 32.fe6 Qe7 (better 32...Bc5=+) 33.Nh4?? (better 33.Nd4+=) 33...g6?? (33...Be5 34.Be5 Qe6 35.Kg1 Bd5 36.Qc3 fe5 37.Nf5-/+) 34.Rf1?? (34.g5!? Be5 35.Be5 fe5 36.Re5+/-) 34...Rf8?? (34...Qe6 35.Rf6 Qd5 36.Nf3-+) 35.g5?? (35.Rf6 Rf6 36.Qf3=) 35...Qe6-+ 36.Rd1 Qe4 37.Nf3 (better 37.Ng2 Be5 38.gf6 Rf6 39.Be5 Qe5 40.Qe3-+) 37...Kg8?? (37...Be5 38.Ba3 Rd8-+) 38.Bf6 Be5?? (better 38...Ra8 39.Qd3 Qd3 40.Rd3 Ra5-+) 39.d6+/- (39.Be5 Rf3 40.Kg1 Rb3 41.Bc3 Qe3 42.Kg2 Qe2 43.Kg3 Rc3 44.Rd3 Rd3 45.Kf4 Qe3 46.Kg4 Rd4) 39...Rf7 40.d7 Qf3 41.Qf3 Bf3 42.Kg1 Bf6 (42...Rf6!? 43.d8Q Rf8+/-) 43.gf6+- Rf8 44.d8Q (44.d8Q Rd8 45.Rd8 Kf7 46.Kf2+-) 1-0. bjoernsen (2375) - Alpamys777 (2365), Rated blitz game, lichess.org, 2024.

6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.Nc3 d5 10.Nf3 dc4 (10...b6 11.cd5 cd5 12.Be2=) 11.Bc4 cb5 12.Nb5 Bd7 13.Nc3 (13.0-0 Nc6=) 13...Bc6 14.0-0 Ne4 (14...Qd6 15.d3=) 15.Ne4+= Be4 16.d3 Bf3 (16...Bd5 17.Qe2+=) 17.Qf3 (worse is 17.gf3 Qd7=) 17...Qb6? (better is 17...Nc6+=) 18.Qg3+- g6 (18...f6 19.Qg4 Rd8 20.Bd4+-) 19.Qe5 f6 20.Be6 (20.Qe6!? Qe6 21.Be6 Kg7+-) 20...Kg7 21.Qe4 Nc6 22.Bd7 (22.Bd5 Qc5+-) 22...Qc7 23.Bc6 bc6 24.Rc1 Rc8 25.Bd4 Qd7 26.Qh4 (26.Rb1 Ra8+-) 26...c5+/– 27.Bb2?? (better is 27.Qe4+/–) 27...Rb8–/+ 28.Ba1 (better is 28.Bc3!? Qd3 29.h3–/+) 28...Qd3–+ 29.Qf4?? (better is 29.Re1 Rb1 30.Bc3–+) 29...Rb1 (29...Rb1 30.Qc4 Qc4 31.Rb1 Qd3–+) 0–1. GuestPTJX – boobalan, freechess.org, 2017.

6.a4 ab5 7.ab5 Ra1 8.Ba1 d5 9.Nf3 dc4 10.Bc4 Nbd7 11.d4 Nb6 12.Bd3 Bd7 13.0-0 Qa8 (13...c6 14.Nc3=) 14.Nbd2 Qa4 Attacking the isolated pawn on b5 (14...Qa2 15.Ne5=) 15.Qb1 (15.Qa4 Na4 16.Rc1 Rc8+=) 15...Ra8 16.Rc1 (16.Ne5 Bb4 17.Nd7 Nbd7=) 16...Bd6 (16...Qa2 17.Ne4 Qb1 18.Rb1=) 17.Ne5 (17.e4 Bb4+=) 17...Be8 (17...Qa2 18.Nd7 Nbd7 19.Nc4=) 18.Ndc4 Nc4 19.Nc4 (19.Bc4 Nd5=) 19...Qa2 (better 19...Bb5 20.Be2 Bc4 21.Bc4 Qb4-/+) 20.Nd6 Qb1 21.Rb1 cd6 22.Bb2 Kf8 (22...Nd5 23.e4 Nb6 24.f3+=) 23.h3 Ke7 24.g4 (24.e4 Ra2+=) 24...h6 (24...Nd5 25.Kg2=) 25.Bf1 (25.e4 Ra2+=) 25...Nd5 (25...Ra5 26.Bc3 Ra2 27.Rc1=) 26.Bc1 (26.e4 Nf6 27.Bd3 Ra2+=) 26...Ra5 (26...f5 27.Bd3=) 27.Rb3 (27.e4 Nc3 28.Bd2 Nb1 29.Ba5 Na3=) 27...Nc7 The pressure on the isolated pawn grows 28.b6 Nd5 29.Bg2?? (29.e4!? Ba4 30.Rb2+=) 29...Bc6?? (better 29...Ra1 30.Bd5 Rc1 (30...ed5?! 31.Rc3=+) 31.Kg2 ed5-+) 30.Bd2 (30.e4 Ra1 31.Kh2 Rc1 32.ed5 Bd5 33.Bd5 ed5-/+) 30...Ra1 31.Kh2 Rd1 (31...Ra2 32.Be1=+) 32.Ba5 Ra1 33.Bd2 Ra2 34.Be1 Re2 (better 34...Ra6=+) 35.Bb4?? (better 35.Rb1=+) 35...Ne3?? (better 35...Rf2 36.Kg3 Rg2 37.Kg2 Nb4 38.Kf2 Nd5-+) 36.Re3?? (better 36.Bc6 Nc4 37.Kg3+-) 36...Rf2+= 37.Rg3 Rb2 (better 37...Rc2+=) 38.Be1 (better 38.Bc3 Rb6 39.d5 Bd5 40.Bd5 ed5 41.Bg7+-) 38...Rb3?? (better 38...Rb6 39.Bc6 bc6=+) 39.Rb3+- Bg2 (39...Bg2 40.Kg2 e5+-). ClayPigeons (2150) - biagiobiagin92 (2255), Rated Bullet game, lichess.org, 2019.

6.a4 ab5 7.ab5 Ra1 8.Ba1 d5 9.Nf3 Nbd7 10.Nc3 Nb6 11.d3 dc4 12.dc4 Qd1 13.Nd1 Bb4 (13...Rd8 14.Nd2=+) 14.Bc3= Bc3 15.Nc3 Rd8 16.Be2 Nbd7 17.0-0 Nc5 18.Rd1 Rd1 19.Bd1 Nfd7 20.Kf1 f6 21.Ke1 Nb6 22.Be2 e5 23.Nd2 Be6 24.Kd1 Kf7 25.Kc2 Ke7 26.h4 g6 27.Kb2 f5 Black plans e4 28.Ka3 Kd6 29.Kb4 e4 30.Bd1? (30.f3 ef3 31.gf3 Nbd7=) 30...Nbd7 (better 30...Nd3 31.Ka3 Nc4 32.Nc4 Bc4-+) 31.Be2 Ne5 32.f3 ef3 (32...Ned3!? 33.Ka3 Ne1-/+) 33.gf3=+ b6 34.f4 Ng4 35.Bg4 fg4 36.Nf1 (better 36.Nde4 Ne4 37.Ne4 Ke7 38.Ng3+=) 36...Nd3-/+ 37.Kb3 Bf5 (better 37...Ne1!?-/+) 38.Ng3= h5 39.Nce2 Nc5 40.Kc3 Be6 41.Nd4 Bd7 42.e4 Na4 43.Kb4 Nc5 44.e5 Ke7 45.Kc3 Be6 46.Nb3 Nd7 47.Kd4 Kd8 48.Nd2 Nc5 49.Nde4 Nb3 50.Kc3 Na5 51.Nd2 Nb7 52.Kd4 Ke7 (52...Nc5 53.Nge4 Ne4 54.Ne4+=) 53.Nge4 Bf5 54.Ng3 Be6 55.Nde4 (better 55.Ndf1+=) 55...Bf5?? (55...Na5 56.Nd2=) 56.Ng5?? (better 56.Nf5 gf5 57.Ng3+-) 56...Be6 57.N5e4 (57.Ne6!? Ke6 58.Ke3+=) 57...Na5 58.Nd2 Nb7 ½-½. bjoernsen (2435) - CJQC1989 (2390), Rated blitz game, lichess.org, 2021.

6.Nf3+=.

6.a4 a5 7.Qc2 (7.Nf3 d5=) 7...b6 (7...cb5 8.cb5 d5 9.Nf3=) 8.Be2 (8.Bd3 cb5 9.ab5 Bb7=) 8...d5 (8...cb5 9.cb5 Ra7 10.Nf3=) 9.Nh3 (9.cd5 Nd5 (worse is 9...Qd5 10.Bf3 Qd8 11.bc6+/–) 10.bc6 Qc7=) 9...dc4 (better is 9...Bb7+=) 10.g4? (better is 10.Ng5!? Re8 11.Bc4=) 10...Qd5 (10...cb5 11.ab5 Bb7 12.Rg1–/+) 11.f3 Ng4 (11...cb5 12.Nc3 Qb7 13.Nb5 Ng4+=) 12.Bc4?? (better is 12.Nf4 Bh4 13.Kf1=) 12...Qf3–+ 13.Rg1 (13.Rf1 Bh4 14.Nf2 Bf2 15.Rf2 Qf2 16.Kd1 Qg1 17.Ke2 Qh2 18.Kd1 Nf2 19.Ke1 Qg1 20.Bf1 Qg3–+) 13...Bh4 14.Nf2 Bf2 (14...Bf2 15.Kf1 Nh2) 0–1. Pruvost,Alain – Testart,Jean Louis, Herlies op, 1998.

6.a4 cb5 7.ab5 a6 8.Nc3 d5 9.Nf3 Nbd7 10.cd5 Nd5 11.Nd5 ed5 12.Be2 Bf6 13.d4 Nb6 14.Qc2 Bd7 (14...ab5 15.Ra8 Na8 16.0-0+=) 15.ba6+/– ba6 16.0-0 (16.Bd3 Rc8 17.Qb1 Rb8+=) 16...Bb5= 17.Bb5 ab5 18.Qb3 (18.Ba3 Re8=) 18...Qd7 19.Ne5 Be5 20.de5 Nc4 21.Bd4? (better is 21.Rfd1 Ra1 22.Ba1=) 21...Nd2–+ 22.Qb2 Nf1 23.Kf1 (23.Rf1 Rfb8–+) 23...Ra1 24.Qa1 g6 (24...Rc8 25.h3–+) 25.Bc5 (25.Kg1 Rb8–+) 25...Rc8 26.Bd6 Qc6 27.Qd4?? (27.Ke1–+) 27...Qc1 28.Ke2 Qc2 (better is 28...Rc2 29.Kf3 Qe1–+) 29.Kf3 Qf5 30.Kg3 (30.Qf4–+) 30...Rc4 31.Qd5 (31.Bc5–+) 31...Qg4 0–1. GuestFBRQ – GuestBWPW, freechess.org, 2017.

6.a4 cb5 7.ab5 a6 8.Nf3 d5 9.Nc3 dc4 10.Bc4 Bd7 11.0-0 Bb4 12.Qb3 Bc3 (12...Qe7 13.Rfc1+=) 13.Bc3 Ne4 14.Bb2 (14.Be5 Ng5 15.Nd4 Ne4+/–) 14...Qb6 (14...Nd6 15.ba6 Nc4 16.Qc4 Na6 17.Rfc1+=) 15.d3 Nc5 16.Qc3 f5?? (better is 16...f6+/–) 17.Qg7 1–0. GuestVTGZ – GuestTGTM, freechess.org, 2017.

6.a4 cb5 7.ab5 b6 8.Be2 Bb7 9.Bf3 Qc7 10.Bb7 Qb7 11.Nf3 d5 12.d3 Rd8 13.Nbd2 Nbd7 (13...dc4 14.Nc4 Bb4 15.Kf1=) 14.0-0 h6 (14...a6 15.ba6 Ra6 16.Ra6 Qa6 17.Nd4=) 15.Ne5 (15.Qe2 dc4 16.Nc4 a6+=) 15...Ne5= 16.Be5 Rac8 17.Qf3 Nd7 18.Bb2 Qc7 (18...Nc5 19.d4 Nd3 20.Ba3=) 19.cd5 ed5 20.Qd5 (20.Rfc1 Qb7+/–) 20...Nc5+= 21.Qc4 (21.Qf5!? Nd3 22.Bd4+=) 21...Nd3+= (worse is 21...Rd3 22.Nf3 Rdd8 23.Qg4+=) 22.Qc7 Rc7 23.Bd4 Rdc8 (23...Rd5 24.Rfb1=) 24.h3 Nb4 25.Nf3 Nd5 (25...Nc2 26.Ra4=) 26.Ne5 (26.Rfd1 Bf6+=) 26...Nb4=. GuestSNRH – Atyeo, freechess.org, 2017.

6.a4 d5 7.Nf3+=.

6.Nf3 d5+=.

6.a4 a5 7.c4 b6 8.d4 Bb7 9.Be2 d5 10.0-0 Ne4 11.Nbd2 Nd7 12.Ne4 de4 13.Nd2 Nf6 14.Qc2 Bb4 15.Rfd1 Qe7 16.Nf1 Rad8 17.Ng3 Rfe8 18.Rac1 Nd7 (18...g6 19.h3=) 19.Bf1 (better 19.Ne4!? f5 20.Ng3+/-) 19...Nf6 20.c5 Bc8 (better 20...bc5 21.dc5 Rd1 22.Rd1 Qc5=) 21.c6 Bd6 22.Ne4 Ne4 23.Qe4 e5 (better 23...Qg5!?+/-) 24.de5+- Bc5 25.Rd8 Rd8 26.Bd4 Ba3 27.Rd1 Be6 28.Bd3 g6 29.Qf3 Bd5 30.Be4 Be6 31.Qf6 Qf6 32.ef6 Bb3 33.Rb1 Ba4? (33...Bd5 34.Bd5 Rd5+-) 34.Ra1 Bb5 35.Ra3 Rd6 36.Rc3 h5 37.Rc1 a4 38.h3 (38.Be5 Re6 39.f4 Re8+-) 38...a3 (38...Re6 39.Bd5 Re8 40.f4+-) 39.f3 (better 39.Be5!? Re6 40.f4 Re8+-) 39...a2 40.Be5 Re6 41.f4 (41.Bc7?! Bc6 42.Ra1 Be4 43.fe4 Rc6+/-) 41...Bc6 (41...Bc4 42.Kf2 b5+-) 42.Bc6 (42.Rc6?? Re5 43.fe5 a1Q 44.Kf2 Qe5-+) 42...Rc6 (42...a1Q 43.Ba1 Re3+-) 43.Rc6 b5 44.Ba1 (44.Rc7 g5 45.fg5 a1R 46.Ba1 b4 47.g6 fg6 48.Be5 g5 49.f7 Kf8 50.Bd6 Kg7 51.f8Q Kg6 52.Qf7 Kh6 53.Qf6) 44...b4 45.Rc2 (45.Rc7 b3 46.Rb7+-) 45...b3 46.Rb2 (better 46.Rc7 h4 47.Kf2+-) 46...Kh7 47.Rb3 c5 48.Rc3 c4 49.Rc4 g5 50.Rc5 g4 51.Rh5 Kg6 52.Rg5 (52.Rg5 Kh6 53.hg4 Kh7 54.Rh5 Kg8 55.Kf2 Kf8 56.Rh8) 1-0. Seppo (2610) - Dingo123 (2360), Rated Bullet game, lichess.org, 2015.

6.a4 b6 7.Be2=.

6.a4 c6 7.c4 d5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6).

6.a4 d5 7.c4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6).

6.a4 d5 7.Be2 ab5 8.ab5 Ra1 9.Ba1 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3 0-0 9.Be2).

6.a4 d5 7.Be2 c5 8.0-0 Bd7 9.c4 ab5 10.ab5 Ra1 11.Ba1 Qa5 12.Bc3 Qb6 13.d3 Rd8 14.Nbd2 Be8 15.Qc2 Nbd7 16.Ra1 Rc8 17.Ra4 Qd6 18.Qb2 Bd8 19.h3 Bc7 20.Ra7 b6 21.Qa2 e5 22.cd5 Nd5 23.Ne4 Qe6 24.Nfg5 Nc3 25.Ne6 Na2 26.Nc7 Nc1 27.Bg4 Nd3 28.Ne8 Re8 29.Rd7 Nb4 30.Rb7 Nd5 31.Nd6 Rf8 32.Nf7 Re8 33.Nd6 1–0. pcmvr – grem (2350), net–chess.com, 2014.

6.a4 d5 7.Be2 c5 8.d3 ab5-/+ 9.ab5 Ra1 10.Ba1 Qa5 11.Nc3? (11.Nbd2 Qb5 12.c4 dc4 13.dc4 Qa5=+) 11...Bd7?? (better 11...d4 12.ed4 Nd5 13.dc5 Bc5-+) 12.0-0=+ Bb5 13.Nb5 Qb5 14.c4 Qc6 15.Ne5 Qc7 16.Qb3 Nc6 17.Nc6 bc6 18.Rb1 h6 19.h3 Nd7 20.Bc3 Rb8 21.Qc2 Rb1 22.Qb1 Qb6 23.Qa2 Bf6 24.Qa8 Kh7 25.Bf6 Nf6 (worse 25...gf6 26.Qe8 Qb1 27.Bf1+/-) 26.Qf8 (26.Bf1=+) 26...Qc7 (better 26...Qb1 27.Bf1 dc4 28.Qc5 cd3-/+) 27.Qc5= Qd7 28.d4 dc4 29.Qc4 Qd5 (29...Kg8!?+=) 30.Qc2+/- g6 31.Bf3 Qa5 32.Bc6 Kg7 33.Bf3 h5 34.g3 Nd5 35.Kg2 Nf6 36.Qc5 Qe1 (better 36...Qc5 37.dc5 Kf8+-) 37.Qe5 Qb4 (37...Qb1+-) 38.g4 hg4 39.hg4 1-0. bjoernsen (2360) - Kashyrin_M (2370), Rated blitz game, lichess.org, 2021.

6.a4 d6 7.d4 (7.Be2 e5=) 7...c6 8.Nc3 Bd7 (8...Qa5 9.Qd2=) 9.Bd3 ab5 10.ab5 Ra1 11.Qa1 cb5 12.Nb5 Na6 13.0-0 Qb6 (13...Nb4 14.Be2+=) 14.c4 (14.Qa3 Bc6=) 14...Ra8 (14...Bc6 15.Ng5=) 15.Nc3 (15.Bc3 Nc7 16.Qb1 Nb5=) 15...Qd8 (15...d5 16.cd5 ed5 17.Ne5=) 16.Qb1 Nb4 17.e4 (17.Be2 d5=) 17...Nd3 18.Qd3 Qc7 19.Rb1 White intends d5 19...Ne8 (19...Rc8 20.e5 de5 21.Ne5=) 20.Rc1 (20.Bc1 Rc8 21.Bf4 Qc4 22.Qc4 Rc4 23.Rb7 Rc7=) 20...Qb6 21.Nd1 White plans c5 21...Ra4 22.h3 (22.d5 Nf6=) 22...h6 (22...Qb4 23.Qc2=) 23.d5 e5 (23...Nf6 24.Bd4 Qc7 25.de6 fe6 26.Nb2+=) 24.c5+= Qb4 25.cd6 Bd6 26.Be5 Qe4 27.Qe4 Re4 28.Bd6 Nd6 ½–½. Luzuriaga,Norberto Horacio – Camargo,Peter, corr I WCH Prelim. LIAPE, 2003.

6.Nc3 =+.

6.c4 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4 a6).

6.c4 d5 7.a4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6).

6.Be2 ab5 7.Bb5 d5=.

7.ab5 d5?? 8.Ra8+- Nbd7 9.Be2 c5 10.0-0 Qc7 11.d3 e5 12.Nbd2 e4 13.de4 de4 14.Ne1 h5 (14...Rd8 15.c4+-) 15.Nc4 Ng4 (15...Rd8 16.Qa1+-) 16.Bg4 hg4 17.Qg4 Ne5 (17...Nf6 18.Qe2+-) 18.Be5 (18.Ne5 Bg4 19.Rf8 Kf8 20.Ng4 Qd7+/-) 18...Bg4 19.Rf8 (19.Rf8 Kf8 20.Bc7+-) 1-0. bjoernsen (2365) - alhabsyi78 (2370), Rated blitz game, lichess.org, 2021.

7.Bb5 c6 8.Be2 d5 9.0-0 Qb6 (9...Nbd7 10.Ne5=) 10.Qc1 (10.Bc3 Na6=) 10...Nbd7+= 11.d4 Qc7 12.c4 b6 13.Nc3 ½–½. Hirtreiter – Cody, corr SOK–90–64, 1990.

8.Ba1 c5 9.c4 (9.d4 d5 10.dc5 Ne4=) 9...d5 10.Be2 Nbd7 11.0-0 Nb6 (11...dc4 12.Bc4 Nb6 13.d3=) 12.d3 Re8 (12...Bd6 13.Nbd2=) 13.Qc2 Bf8 (13...Nfd7 14.Nc3=) 14.Rd1 (14.Nbd2 Nfd7+=) 14...Nfd7 15.Nc3 g6 (15...Nf6 16.d4 cd4 17.Rd4+=) 16.Na4 Na4 17.Qa4 b6 (17...Bd6 18.Qc2+=) 18.d4 (18.Qa8 dc4 19.dc4 Qe7+/–) 18...Bb7 19.Qc2 Bg7 20.dc5 Ba1 (20...Nc5 21.Bg7 Kg7 22.cd5 Bd5 23.Bc4+/–) 21.c6+/– (21.Ra1?! Nc5 22.cd5 Qf6=) 21...Bg7 22.cd5 (22.cd7?! Qd7 23.cd5 ed5+= (23...Bd5? 24.e4+-)) 22...Bc8 (22...ed5 23.cb7 (23.cd7?! Qd7 24.Nd4 Be5+=) 23...Nf6 24.Rc1+-) 23.de6 (23.cd7 Bd7 24.de6 Re6+/–) 23...Re6+/– 24.cd7 Bd7 25.Nd4 (25.Rd2 Re8+/–) 25...Bd4 (25...Rd6!?+/–) 26.Rd4+- (26.ed4?! Qe8 27.Bf1 Bb5 28.Bb5 Qb5=) 26...Qe8 (26...Re7 27.Qc6+-) 27.Qd1 Re7 28.Bf3 (28.Rd6 g5+-) 28...Kg7 (28...h6 29.Ra4 Qf8 30.Qd5+-) 29.Qa1 (29.Rd6 Kh6 30.Qd4 f5 31.Qh4 Kg7 32.Qf6 Kh6+-) 29...f6+/– 30.Qa7 (better is 30.Qb2!?+/–) 30...Bb5+= 31.Qb6 (31.Qa1 Rd7+=) ½–½. Meyer,Frank (2035) – Knop,Hauke (1820), Wichern op 6th, 2001.

8.Ba1 c5 9.Be2 d5 10.c4 Qa5 11.Nc3 Nbd7 12.cd5 ed5 13.0-0 Nb6 14.d4 c4 15.Qc2 Bd7 16.Rb1 Ra8 17.Ne5 Be6 18.Bb2 Qb4 19.Bf3 g6 20.Ba1 Qd6 21.Re1 Bf5=+ 22.Qc1 Na4 23.Nd5+= Nd5 24.e4 Nb4? 25.ef5+- Ra7?? 26.Qc4 Nb6 27.Qf7 Kh8 28.fg6 (28.fg6 Qg6 29.Ng6 hg6 30.Qe8 Kg7 31.Re7 Kh6 32.Qh8 Kg5 33.h4 Kf5 34.Qe5) 1–0. b4_player – Fini_mladic, gamecolony.com, 2006.

8.Ba1 d5 9.c4 dc4 10.Bc4 Nbd7 11.0-0 Nb6 12.Be2 Nfd5 13.d4 f5 14.Nbd2 Qe8 15.Ne5 Rf6 16.Qb3 Rh6 17.Rc1 Bd6 18.g3 Nf6 19.Bf3 g5 20.Nf1 g4 21.Bg2 Nbd5 22.Bb2 Bd7 23.Nd7 Qd7 24.Ra1 Kf7 25.Ra7 b6 26.Ra8 Rg6 27.Nd2 Rg8 28.Ra7 h5 29.e4 fe4 30.Ne4 Ne4 31.Be4 Ne7 32.Ra1 Rg5 33.Re1 (better is 33.Bd3!?+/–) 33...Rb5= 34.Qa4 c6 35.Ba1 Bb4 36.Rc1 Nd5 37.Qa8 Ra5 38.Qh8 Nf6 39.Bc6 Ra1 (39...Qa7 40.Bb2 Ra2 41.d5 Rb2 42.Be8 Ne8 43.Qh5 Kf6 44.Qh6 Ke5 45.Qe6 Kd4 46.Qg4 Ke5 47.Qg5 Kd4 48.Rd1 Kc4 49.Qe3+/–) 40.Ra1 (better is 40.Bd7!? Rc1 41.Kg2+=) 40...Qc6–/+ 41.Ra7 Be7 42.Re7 Ke7 43.Qg7 Kd6 44.Qf6 Qd5 45.Qd8 Kc6 46.Qc8 ½–½. Bennett,Hilton Petrie (2075) – Mistry,Prashant (2015), Oceania zt Auckland, 2005. (=1.Nf3 Nf6 2.b4 e6 3.b5 Be7 4.Bb2 0-0 5.e3 a6)

8.Ba1 d5 9.c4 c5 10.Be2 b6 11.0-0 Bb7 12.d4 dc4 (12...Nbd7 13.Bb2+=) 13.Bc4 Bd5 (13...Nbd7 14.Nbd2=) 14.Bd3 (14.Nbd2 Nbd7=) 14...Be4 (14...Nbd7 15.Nbd2=) 15.Bc4 (15.Be4 Ne4 16.Qc2 Qd5=) 15...Nbd7 16.Nbd2 Bd5 17.Bd3 Qa8 18.Qc2 Rc8 19.Rc1 Bb7 20.Qb1 h6 21.e4 (21.Bb2 h5=) 21...cd4 (21...c4 22.Nc4 Be4 23.Be4 Qe4 24.Qe4 Ne4 25.Bb2=) 22.Rc8 Qc8 23.Bd4 Nc5 The pressure on e4 grows (23...Bc5 24.Bc5 Nc5 25.e5 Nd3 26.Qd3+=) 24.Bc2= Qd8 25.h3 Nh5 26.Be3 Nf6 27.Nd4 Qa8 (27...Qc7 28.f3=) 28.Nc4 Qd8 (28...Be4 29.Nb6 Qb7 30.Be4 Nfe4 31.Nc6=) 29.f3 (29.Nc6 Qc7 30.Ne7 Qe7+/–) 29...Nfd7+= 30.Nc6 Qe8 (better is 30...Bc6!? 31.bc6 Nb8+=) 31.e5+- f6 (31...Bg5 32.f4 Be7 33.Qd1+-) 32.Bg6 (32.ef6 Bf6 33.Qb4 Qh5+-) 32...Qf8 33.Ne7 (33.ef6 Bf6 34.Qc2 Qa8 35.Nb6 Nb6 36.Qc5 Nd5+-) 33...Qe7 34.ef6 Qf6 35.Nd6 (35.Qc2!? Qa1 36.Kf2+/–) 35...Bd5+= 36.Bf7 (36.Bh7 Kh8+=) 36...Kh8 (36...Kf8 37.Bg6=) 37.Bh5+= e5 (37...Ne5 38.Bc5 bc5 39.b6+=) 38.Ne8 (38.Qg6 Qg6 39.Bg6 Kg8+/–) 38...Qe7+= 39.Qg6 (39.Qd1 Bf7 40.Bf7 Qf7+=) 39...e4 (39...Ne6 40.Qf5+=) 40.Bd4+/– Ne5?? (40...Ne6!? 41.Qh6 Kg8+/–) 41.Qb6 (better is 41.Qg3 Nf3 A) 42.Bf3?! A1) 42...ef3?? 43.Bg7 (worse is 43.gf3 Ne6 44.Qe5 Qe8 45.Qd5 Nd4 46.Qd4 Qb5–/+; 43.Qg7?! Qg7 44.Bg7 Kh7 45.Nf6 Kg7 46.Nd5 Na4+=) 43...Kg8 44.Bf6 Kf8 45.Be7 Ke7 46.Nc7+-; A2) 42...Ne6 43.Qe5 A21) 43...ef3? 44.Ng7 (44.Qd5 Nd4 45.Qd4 Qe1 46.Kh2 Qe8 47.gf3 Qb5–/+) 44...f2 45.Bf2 Qg7 46.Qd5+-; A22) 43...Qe8+/–; B) 42.gf3+-) 41...ef3?? (better is 41...Ncd7 42.Qd6 Nf3 43.Bf3 Qd6 44.Nd6 ef3+-) 42.Bc5 (better is 42.Qc5 Qc5 43.Bc5 fg2 44.Bd4 Nf3 45.Bf3 Bf3 46.b6+-) 42...Qg5 43.Kf2 (43.Bg4 Qc1 44.Kh2 fg2 45.Bf8 Qh1 46.Kg3 g1Q 47.Qg1 Qg1 48.Kf4 Ng6 49.Kf5 Qb1) 43...Qg2 (43...Nd3 44.Kg1 Qg2) 44.Ke3 Nc4 45.Kf4 (45.Kd4 Qd2) 45...Nb6 (45...Qg5) 46.Bb6 (46.Be7 f2 47.Be2 f1Q 48.Bf1 Qe4 49.Kg3 Qf3 50.Kh4 Qf4 51.Kh5 Bf7) 46...f2 (46...Qg5) 47.Bf2 (47.Ke5 f1Q 48.Kd6 Qg3 49.Ke7 Qfe1 50.Be2 Qe2 51.Be3 Qee3 52.Kd7 Qe6 53.Kd8 Qb8) 47...Qf2 (47...Qg5) 48.Ke5–+ Qh4 (48...Qc5 49.Bg4 Bc6 50.Ke6 Be8 51.Bf5 Qd4 52.Be4 Qe4 53.Kd6 Qd4 54.Kc7 Qd7 55.Kb6 Qb5 56.Kc7 Qc6 57.Kb8 Bh5 58.h4 Bf3 59.h5 Qb7) 49.Bg4 Qg5 50.Kd6 Bg2 51.b6 Qd8 52.Bd7 g5 53.Nc7 Bh3 54.Ne6 Be6 55.Ke6 Qb6 (55...Qb6 56.Kf7 Qa7–+) 0–1. Shabanov,Nurlan – Karimov,Joshgun, Aydin Guseinov Memorial – Rapid, 2016. (=1.Nf3 Nf6 2.b4 e6 3.b5 Be7 4.e3 0-0 5.Bb2 a6 6.a4 ab5 7.ab5 Ra1)

8.Ba1 d5 9.c4 Bd7 10.Ne5 (10.Nc3 c6=) 10...c6 11.Nc3 dc4 (11...cb5!? 12.Nb5 Bb5 13.cb5 Nbd7=+) 12.Bc4= cb5 13.Nd7 Nbd7 14.Bb5 Nd5? (better 14...Qa5!?+=) 15.Nd5+- ed5 16.Bg7! Kg7 17.Qg4 Kh8 (17...Bg5 18.Bd7 (18.Qd7?! Qd7 19.Bd7 Rd8+-) 18...f5 19.Bf5+-) 18.Bd7 (worse 18.Qd7 Qd7 19.Bd7 Kg7+-) 18...Bf6 (18...Rg8 19.Qh3+-) 19.0-0 Rg8 20.Qh3 Rg5 (20...Qc7 21.d4+-) 21.Bf5 Qg8 (21...Rg7 22.Rc1 Qa5 23.g3+-) 22.Rb1 d4 (22...Rg7 23.Qf3 d4 24.Rc1+-) 23.Rb7 de3 (23...Rg7+-) 24.Rb8!! ed2 (24...Qb8 25.Qh7 Mate attack) 25.Qh7 1–0. DEFFM – GuestJZFM, freechess.org, 2019.

8.Ba1 d5 9.c4 Nbd7 10.Be2 b6 11.0-0 Bb7 12.Nc3 Qa8 13.Bb2 dc4 14.Bc4 Qa5 15.Nd4 Qb4 16.Qb3 Ra8 17.f4 g6 18.Rc1 Qb3 19.Bb3 Nc5 20.Bc4 Bd6 21.Be2 Nfe4 22.Ne4 Ne4 23.d3 Nc5 24.g3 Ra2 25.Rc2 (25.Bc3!?=) 25...Na4-/+ 26.Bc1 Ra1 (better 26...Rc2 27.Nc2 Nc3-/+) 27.Kf2+= Nc5 28.e4 Nd7 29.Be3 Nc5 30.h4 e5 31.fe5 Be5 32.Nf3 Bd6 33.Nd4 (33.e5 Be7+/-) 33...Be4 (better 33...Ra3 34.Bf4 Nd3 35.Bd3 Bf4 36.gf4 Rd3 37.Rc7 Be4-/+ (worse 37...Rd4 38.Rb7 Re4 39.Rb6=+)) 34.de4+/- Ne4 35.Kf3 Ng3 36.Bd3 Nh5 37.Bh6 Nf6 38.Nc6 Ra3 39.Ke2 1-0. bjoernsen (2390) - IamJval (2360), Rated blitz game, lichess.org, 2021.

8.Ba1 d6 9.d4=.

10.Nc3 d6 11.Be2 Nbd7 12.0-0 e5 13.d3 Re8 14.Qc2 Nc5 Black prepares e4 15.Nd2 Bf8 Black plans e4 16.Bf3 Bf3 17.Nf3 (worse 17.gf3 Qd7=+) 17...e4 18.de4 Nfe4 19.Nd5 h6 20.Nd4 Qd7 21.h3 f5 22.f3 Ng3 23.Re1 Be7 24.Ne7 Re7 25.Kf2 Nh5 (25...f4!?+=) 26.Nf5+/- Rf7 27.g4 Nf6 28.Bd4 d5 (better 28...Ne6!?+/-) 29.cd5+- Qb5 30.Bc5 bc5 31.Rb1 Qa5?? (31...Qe8 32.Qc5 Qa8 33.Rd1+-) 32.e4 (32.Rb8 Rf8 33.Nh6 gh6 34.Qg6 Kh8 35.Rf8 Ng8 36.Rg8) 32...Nd7 33.Qb2 (33.e5 Nb6+-) 33...Kh7 (33...Qa8 34.Kg2+-) 34.Ra1 Qb6 35.Qc3 (35.Qb6 cb6 36.Ke2 g5+-) 35...Qg6 (35...g6 36.Ra8 Nf6 37.Ng3+-) 36.h4 h5 37.Rg1 Qa6 38.gh5 Qa2 39.Kf1 Qb1 40.Kg2 Qa2? (40...Qb8+-) 41.Kh3 Nf6 42.h6 (better 42.Qe3 Ng8 43.h6+-) 42...g6 43.Ne3?? (better 43.Ng3 c6 44.h5+-) 43...Nh5 (better 43...Qe2 44.Rg3 Nh5=) 44.Ng2?? (better 44.Nc2 Qa6 45.Kh2+=) 44...Qf2-+ 45.Kh2 (45.f4 Qg1 46.Qf3-+) 45...Qg3 46.Kh1 Qh3 0-1. bjoernsen (2300) - Deep_82 (2305), Rated blitz game, lichess.org, 2020.

10.Be2 d5 11.0-0 Nbd7 12.Nc3 Nc5 13.Ne5 dc4 14.Bc4 Nfe4 15.d3 (better 15.Ne4 Ne4 16.d3+=) 15...Bf6?? (better 15...Nd6=) 16.Ne4+- (16.de4?! Be5 17.Qg4 Qa8=) 16...Ne4 17.de4 1-0. bjoernsen (2395) - TysonT (2390), Rated blitz game, lichess.org, 2023.

10.Be2 d5 11.0-0 Nbd7 12.Nc3 c6 13.bc6 Bc6 14.Qb1 Qc7 (14...dc4 15.Bc4 Bf3 16.gf3=+) 15.Rc1 Qb7 16.h3 (16.cd5 Nd5 17.Nb5 N5f6+=) 16...h6 (better 16...dc4!? 17.Nb5 Ra8-/+) 17.Nd4 dc4 18.Nc6 Qc6 19.Nb5 Ra8 (better 19...Qe4!?=) 20.Rc4+/- Qb7 21.Bf3 (better 21.Bf6!? Bf6 22.Bf3 Qf3 23.gf3+-) 21...Nd5+/- 22.Nc7 Rd8 23.Nd5 ed5 24.Rc2 Bf6 25.Bb2 Rb8? (25...Bb2 26.Rb2 Ne5 27.Rb6 Nf3 28.gf3+=) 26.Qc1 (better 26.Qa2!? Ra8 27.Qd5 Qd5 28.Bd5+-) 26...Bb2+= 27.Qb2 Nf6 28.Qe5 Attacks the isolani on d5 28...b5 29.Rc7 Qa8 30.Qe7 Rf8 31.Qb4 (better 31.g3+=) 31...Qa1=+ 32.Kh2 Qe5 33.Qf4 Qf4 34.ef4 Rb8 35.Bd1 Ne4 36.Bb3 Nd2 (36...Rd8 37.d4=) 37.Bd5+= b4 38.Bf7 (worse 38.Rf7 Kh8-/+) 38...Kh8 39.Rd7 b3? (better 39...Ne4=) 40.Rd2+- b2 41.Ba2 b1Q 42.Bb1 Rb1 43.Kg3 Rb3 44.f3 Rb4 45.h4 Kh7 46.h5 Rb5 47.Kg4 Rb1 48.g3 Kg8 49.Rd7 Rb5 50.f5 Rb4 51.f4 Rb6 52.Re7 Kf8 53.Re6 Rb1 54.f6 Kf7 (54...Rb5 55.fg7 Kg7 56.Rg6 Kh7 57.f5+-) 55.fg7 Kg7 56.Kf5 Rb5 57.Re5 Rb6 58.g4 Rf6 59.Ke4 Ra6 60.Rd5 Re6 61.Kf5 Ra6 62.Rd7 Kf8 63.g5 hg5 64.fg5 Kg8 65.h6 Ra5 66.Kf6 Ra6 67.Kf5 Ra5 (67...Ra5 68.Kf4 Ra4 69.Ke5 Ra6+-). bjoernsen (2365) - Batasan_Man (2335), Rated blitz game, lichess.org, 2020.

10.Be2 d5 11.Nc3 Nbd7 12.0-0 dc4 13.Bc4 Qa8 14.Be2 Nc5 15.h3 Rd8 16.Qc2 Nfe4 17.d3 Nc3 18.Bc3 Qa4 19.Qa4 Na4 20.Be5 Bd6 21.Ra1 Be5 22.Ra4 (worse 22.Ne5 Nc3 23.Kf1 Nb5=+ (worse 23...Ne2 24.Ke2 Bg2 25.e4+=)) 22...Bd6 23.Ra7 Bf3 24.Bf3 g6 25.d4 e5 26.de5 Be5 27.g3 Rd2 28.Ra8 Kg7 29.Re8 Bd6 30.Bc6 h5 31.h4 Kf6 32.Kg2 Kg7 33.Kf3 Kf6 34.Be4 Kg7 35.Bc6 Kf6 36.Re4 Kg7 37.Rc4 Kf6 38.Re4 Kg7 39.Re8 (39.Rd4 Rd4 40.ed4 f5+=) 39...Kf6 40.e4 (40.Rd8!?+=) 40...Bc5= 41.e5 Kg7 42.Rc8 Rf2 43.Ke4 Re2 44.Kf4 Bd4 45.Re8 Bc5 46.Bd5 Rd2 47.Bc6 Rd4 48.Kf3 Rd3 49.Kf4 (49.Kg2=+) 49...Rd4 (better 49...f5!? 50.ef6 Kf6-+) 50.Kf3=+ Rd3 51.Kf4 Rd4 ½-½. bjoernsen (2350) - TysonT (2310), Rated blitz game, lichess.org, 2022.

10.Be2 d6 11.0-0 Nbd7 12.Qc2 Nc5 13.d3 e5 14.Nbd2 Re8 15.Re1 Bf8 Black prepares the advance e4 16.Ng5 h6 17.Ngf3 e4 18.de4 Nfe4 19.Nd4 (19.Bd4 Qe7+=) 19...Qh4 (19...Nf2!? 20.Kf2 Qh4 21.Kf1 Bg2 22.Kg2 Qe1=+) 20.Ne4= Ne4 21.Bf3 Ba8 22.g3 Qg5 23.h4 (23.Bb2 Bb7+=) 23...Qg6 24.Kg2 Be7 25.Kh2 (25.h5!? Qh7 26.Bb2+/-) 25...Bf6= 26.Nc6 (better 26.Bb2!?=) 26...Bc6-/+ 27.bc6 Ba1 28.Ra1 Qf6 29.Be4? (better 29.Qe4!? Re4 30.Ra8 Kh7 31.Be4 g6 32.Kg2-/+) 29...Qa1-+ 30.Bd5 Qf6 31.Kg2 h5 32.Qe2 g6 33.Qa2 Kg7 34.Qa7 Re7 35.Qb8 Qe5 36.e4 Qd4 37.Qd8 Re4?? (better 37...Qf6-/+) 38.Qc7+/- Re2?? (better 38...Re6 39.Be6 Qe4 40.Kh2 Qe6 41.Qb6 Qc4 42.Qb2 Kh7+/-) 39.Qf7+- Kh6 40.Qf8 (better 40.c7 Qh8 41.Qf4 Kh7 42.Qd6 Qc8+-) 40...Qg7 41.Qf4 (better 41.Qg7 Kg7 42.c7+-) 41...Kh7+/- 42.Qd6 Qb2?? (better 42...Re7+/-) 43.Qc7+- Kh6 (43...Qg7 44.Qg7 Kg7+-) 44.Qf4 Kg7 (44...Kh7 45.c7 Re8 46.Qf7 Qg7 47.Qe8 Qc7+-) 45.c7 b5 (45...Qf6 46.c8Q Rf2 47.Qf2 Qf2 48.Kf2 b5 49.Qg8 Kf6 50.Qf7 Ke5 51.Qf4) 1-0. bjoernsen (2385) - taoneto (2460), Rated blitz game, lichess.org, 2021.

10.Be2 d6 11.0-0 Nbd7 12.d4 Ne4 13.Nbd2 f5 14.Qc2 Ndf6 15.Bb2 Qe8 16.Nb3 Qg6 17.Ne1 Ng4 18.Bc1 Qh6 (18...Bh4 19.Bg4 fg4 20.f4=+) 19.h3= Ngf6 20.Bd3 g5 21.f3 (21.d5!? ed5 22.Nd4+=) 21...Ng3= 22.Rf2 g4 23.fg4 (23.Qc3!?=) 23...fg4-/+ 24.e4 Qh4 25.Qd2? (25.e5!? de5 26.de5 gh3 27.gh3-/+) 25...gh3 (25...Nge4 26.Be4 Ne4 27.Rf8 Bf8 28.Qe3 gh3 29.gh3-+) 26.Qg5 (26.gh3 Qh3 27.Qg5 Kh8-+) 26...Qg5 27.Bg5 Nfe4 (better 27...Nge4 28.Bf6 Nf2 (28...Nf6?! 29.gh3 Nh5 30.Rf8 Bf8 31.Kf2-/+; 28...Rf6?! 29.Rf6 Bf6 30.gh3-+) 29.Be7 hg2 30.Ng2 Rf7 31.Bd6 cd6-+) 28.Rf8-/+ Bf8 29.Bd8 hg2 30.Bc7 d5 (30...Nh5 31.Be4 Be4 32.Nd2=) 31.c5 (worse 31.Ng2 dc4 32.Bc4 Bd5=+) 31...bc5 32.Na5?? (better 32.Bg3 Ng3 33.dc5=) 32...Bc8 33.b6 c4 34.Be4 Ne4 (34...de4? 35.Bg3 e5 36.Be5+- (36.de5?! Bc5 37.Kg2 Bb6 38.Nc4 Bc5+-)) 35.b7 Bb7 36.Nb7 Bb4 37.Ng2 c3 38.Ne3 Ba3 39.Nd8 Ng5 40.Kg2 Kg7?? (40...Be7 41.Nc6 Kf7 42.Kf2 Ne4 43.Ke2-/+) 41.Be5?? (41.Bf4 h6 42.Bg5 hg5 43.Ne6 Kg6 44.Nc7+/- (44.Nd5? c2 45.Nef4 gf4 46.Nf4 Kf5-+)) 41...Kg6-/+ 42.Bf4 Bc1 (better 42...Be7!? 43.Nc6 Bf6-/+) 43.Bg5= Kg5 44.Ne6 Kf6 45.Nd5 Ke6 46.Nc3 Bb2 47.Ne2 Kf5 48.Kf3 Ba3 49.Ng3 Kg6 50.Kg4 Bd6 51.Nh5 Bf8 52.d5 h6 53.Nf4 Kf7 54.Ne6 Bd6 55.Kf5 Bg3 56.Nd4 Bd6 57.Nf3 Be7 58.Ne5 Ke8 0-1. bjoernsen (2395) - Caschmirr (2495), Rated blitz game, lichess.org, 2022.

9.c4 d5 10.Nc3 dc4 11.Bc4 cb5 12.Nb5 Nd5 13.0-0 Bd7 (13...Nc6 14.Nbd4+=) 14.Ne5 (14.e4 Nb4+-) 14...Be8 (14...Nc6 15.Qc2+=) 15.Qb1 (15.Qg4 Bf6+-) 15...Nc6+= 16.Nc6 (16.Rc1 Qa5+=) 16...bc6 17.Nd4 Bf6 (17...Bd7 18.Nf3+=) 18.Qb7 Exerts pressure on the isolated pawn (18.Qe4 Qd6+=) 18...Qd7 19.Qb3 Qc8 (19...Qa7!?+=) 20.e4+- Nf4 21.g3 (21.Nf3 Ba1 22.Ra1 c5+-) 21...Ng6 (21...Nh3 22.Kg2 Ng5 23.f3+=) 22.f4 (better 22.Nf3+-) 22...e5? (better 22...c5!? 23.Nf3 Ba1 24.Ra1 Bc6+-) 23.Ne6!+- ef4 (23...fe6 24.Be6 Double attack (24.f5 Decoy)) 24.Nf8 Ba1 25.Ng6 Bd4 26.Kg2 hg6 27.Rf4 Qc7 28.Qa3 Be5 (28...Bf6 29.d3+-) 29.Qa8 Bf4 (29...Qb8 30.Qb8 Bb8+-) 30.Qe8 (30.gf4?! Kf8=) 30...Kh7 31.Bf7 Bd2 (31...Qb8 32.Bg6 Kh6+-) 32.Qg8 Kh6 33.Qh8 Kg5 34.Qh4 1–0. GuestTCRW – PaulFang, freechess.org, 2020.

9.c4 d5 10.Nc3 Nbd7 11.Be2 Nb6 12.cd5 cd5 13.0-0 Bd6 14.Qb3 (14.Na4 Nbd7=) 14...Bd7 (14...e5 15.Rc1=) 15.Bb2 Qb8 16.h3 Rc8 17.d3 Be8 (17...e5 18.Ba3=) 18.Ra1 Nbd7 (18...Bd7 19.Ba3=) 19.Na4 (19.d4 Qc7+=) 19...h6 20.Bf1 Nh7 (20...e5 21.Be2=) 21.Ba3 Nhf8 22.d4 Ng6 (22...f6 23.Nc3+=) 23.Bd3+/- Ne7 24.Bd6 Qd6 25.Qa3 (25.Nc3 e5 26.e4 ed4 27.Nd5 Nc5+=) 25...Qa3 26.Ra3 Ra8 27.Ra2 Nc8 28.Nc3 Ra2 29.Na2 Nd6 30.Nc3 Nb6 The isolani on b5 becomes a target 31.Nd2 Kf8 32.Nb3 (32.f3 Nbc4 33.Bc4 dc4=) 32...Nbc4 33.Nc5 Ke7 34.Bc4 (34.g3!?=+) 34...dc4-/+ 35.b6 Bc6 36.e4 White intends d5 36...Nc8 37.d5 (37.Kf1 Nb6 38.Ke2 Na8-/+) 37...ed5-+ 38.ed5 Bd7 (better 38...Bd5!? 39.Nd5 Kd6 40.Nb7 Kd5-+) 39.Nb7=+ Nb6 40.Nc5 (40.f4!?=+) 40...Kd6 41.N5e4 (better 41.Nb7 Ke5 42.d6-/+) 41...Kc7 (better 41...Ke5-+) 42.f4= Bf5 43.Nd2 (better 43.Nc5!?=) 43...Kd6-/+ 44.Kf2 (44.Nf1 Nd5 45.Nd5 Kd5 46.Ne3 Ke4 47.Nc4 Be6 48.Nd2 Ke3-+) 44...Bd3-+ (44...Nd5?! 45.Nc4 Kc5 46.Nd5 Kd5 47.Ne3 Ke4 48.Nf5 Kf5 49.Kf3=) 45.Nde4 Be4 46.Ne4 Kd5 47.Nc3? (better 47.Ke3-+) 47...Kd4 48.Nb5 (48.Ne2 Kd3-+) 48...Kd3 49.Kf3 c3 50.Nc3 Kc3 51.Ke4 Kd2 52.g4 (52.Kf3 Kd3-+) 52...Ke2 53.h4 White prepares the advance g5 53...Kf2 54.h5 (54.g5 Kg3 55.h5 Kg4-+) 54...Kg3 55.g5 Kg4 0-1. Osmak,Iulija (2425) - Sargsyan,Anna M (2380), 1st FIDE World Uni Women, 2021.

9.c4 d5 10.Nc3 Nbd7 11.Be2 e5 12.0-0 e4 13.Nd4 c5 14.Nf5 dc4 15.Ne7 (15.Qc2 Nb6 16.Ne4 Bf5 17.Nf6 Bf6 18.Qf5 A) 18...Qd2? 19.Bf6 (19.Qc5?! Qe2 20.Qb6 c3=) 19...gf6 20.Bf3+- (20.Qc5?! Qe2 21.Qb6 c3 22.Qf6 c2 23.Qg5 Kh8 24.Qe5 Kg8 25.Qg3 Kh8+=); B) 18...Ba1 19.Ra1 Qd2+=) 15...Qe7=+ 16.Bc4 Ne5 17.Be2 c4 (17...Qd6 18.Qc2 Nfg4 19.g3=+) 18.Na2 Nd3 19.Bf6 Qf6 (worse 19...gf6 20.Bd3 ed3 21.Nc3+=) 20.Nc3 Qe5 21.Bd3 cd3 (21...ed3 22.Qf3=) 22.f3 ef3 23.Qf3 (23.Rf3? Bg4–+) 23...b6 (23...f6!?+=) 24.Qc6+- Qe6 25.Nd5 Bd7 26.Qe6 Be6 27.Nb6 Rb8 28.Ra1 White begins to deal mighty blows 28...g6 (28...Kf8!? 29.Ra8 Ra8 30.Na8 Ke7+-) 29.Ra8+- Ra8 30.Na8 Bc8? (better 30...f5+-) 31.Nb6 Bb7 32.Nc4 f5 (32...Bd5 33.b6+-) 33.b6 Kf8 34.Nd6 Bc6 35.b7 Bb7 36.Nb7 (36.Nb7 Ke7 37.Nc5+-) 1–0. onur604 (2320) – ZAMBALARANU (2150), lichess.org, 2020.

9.c4 d5 10.Nc3 Nbd7 11.Be2 e5 12.bc6 bc6 13.0-0 e4 14.Nd4 Qc7 15.Nf5 Bb4 16.cd5 cd5 17.Qb3 Bc3 18.Bc3?? (better 18.Qc3 Qc3 19.Bc3+/- (19.dc3?! Rd8=)) 18...g6?? (18...Nc5 19.Ne7 Qe7-/+) 19.Ne7+- Kg7 20.Nd5 Qd6 21.Nf6 Nf6 22.Qb2 Re8 23.Ra1 (23.f3 Re6 24.Bc4 Ba6 25.Be6 Bf1 26.Bf6 Kg8+-) 23...Re6 24.Bc4 Re7 25.Bb4 (25.Bd5! Re8+-) 25...Rb7 26.Bd6 (26.Rb1 Qd7+/-) 26...Rb2+/- 27.h3 (27.d4 Rc2 28.Ba2 Ng4+-) 27...Rd2+= 28.Ra7?? (better 28.Be5 g5 29.Bd4+/-) 28...Rd6-+ 29.Rf7 Kh6 30.g4 g5 31.Kg2 Kg6 32.Rc7 Be6 33.Bb5 h5 34.gh5 Kh5 35.Kg3 g4 (35...Rb6 36.Rc5 Kg6 37.h4 gh4 38.Kh4-+) 36.h4? (better 36.Be2!?-/+) 36...Kg6-+ 37.h5? (37.Rc5-+) 37...Nh5 38.Kh4 Nf6 39.Bc6 Kf5 40.Bb5 Rd5 41.Bc4 Re5 42.Be2 Ra5 43.Rg7 Ra2 (better 43...Ke5 44.Rg5 Bf5-+) 44.Rg5 1-0. bjoernsen (2345) - braulio66 (2325), Rated blitz game, lichess.org, 2021.

9.bc6 bc6 10.Be2 Qa5 11.Nc3 Ba6 12.0-0 Be2 13.Qe2 d5 (13...Qh5 14.e4=) 14.Nd4 (14.e4 Na6=) 14...c5+= 15.Nb3 Qc7 (15...Qb4 16.Rb1+=) 16.Bb2 (16.Rb1 c4 17.Nd4 Nbd7=) 16...Nc6+= 17.Ra1 (17.d3 Rb8+=) 17...Rb8 (17...c4 18.Nc1–/+) 18.Ba3 c4 (18...Nd7 19.d4+=) 19.Be7 Qe7 (19...cb3 20.Bf6 b2 21.Rb1 gf6 22.Qg4 Kh8 23.Qh4=) 20.Nd4 Nd4 21.ed4 Qc7 (21...Qd8 22.h3+=) 22.h3 h6 23.Qd1 (23.Qe5 Qd8+=) 23...Qf4–/+ 24.Ne2 Qf5 25.c3 (25.Nc1 Ne4 26.f3 Nd6–/+) 25...Ne4 (25...Rb2 26.Qc1 Rc2 27.Qe1–/+) 26.Qe1 (26.f3 Nd6–/+) 26...Qg5 (26...Rb2 27.Rd1–/+) 27.Ng3 (better is 27.Ra2–/+) 27...Nd2 (27...Ng3 28.fg3 Rb2–/+) 28.Kh2?? (better is 28.h4 Qf4 29.Ne2 Nf3 30.gf3 Qh4 31.Ng3=) 28...Nb3–+ 29.Ra7 (29.Rd1–+) 29...Qf6 (better is 29...Nc1–+) 30.Qe3–/+ Kh7 (30...Re8 31.Nh5 Qf5 32.Ng3–/+) 31.f4 (31.Nh5 Qg5 32.Nf4 Rf8+=) 31...g6 (31...Kg8–/+) 32.Qe2 (better is 32.Nh1!?–/+) 32...Nc1 33.Qc2? (better is 33.Qe5 Qe5 34.fe5–+) 33...Nd3 (33...Qf4 34.Rf7 Qf7 35.Qc1–+) 34.Qa4 Qf4 (34...Nf4?! 35.Qd7 g5 36.Ra2–+) 35.Qd7 Qf6 (better is 35...Kg7 36.Qe6 h5 37.Qd5–+) 36.Qc7? (36.Qf7 Qf7 37.Rf7 Kg8–+) 36...Rb1 (better is 36...Rf8–+) 37.Ra8?? (better is 37.Qf7 Qf7 38.Rf7 Kh8 39.Rf6–+) 37...Kg7 (37...Qf2 38.Ne2 Ne1–+) 38.Qc8 h5 39.Qh8 1–0. PingPongPeng (1700) – Solare,Juan Maria (1870), Rated game, 3m + 0s, 2004.

9.bc6 bc6 10.Be2 d5 11.0-0 c5 12.d3 Nc6 13.Nbd2 Qc7 14.h3 Rd8 15.c4 Ba6 16.Qc2 Nb4 17.Qb1 Rb8 18.Be5 Bd6 19.Bd6 Qd6 20.Qa1 Nd7 21.Rc1 f5 22.Qa5 dc4 23.Nc4 Bc4 (23...Nd3?? 24.Nd6 Nc1 25.Ba6+-) 24.Rc4 (better 24.dc4!? Nf6 25.Rd1+=) 24...Nd3-/+ 25.Qd2 (25.Rc3!? N7e5 26.Qa1-/+) 25...Rb1-+ 26.Bf1 Nb6 27.Qc2 (27.Rc2 Qd5-+) 27...Rc1 (27...Nc4?! 28.Qb1 Nce5 29.Ng5=+) 28.Qc1 (28.Rd4 cd4 (28...Rc2? 29.Rd6 Nf2 30.Rb6+-) 29.Qd3 e5 30.ed4 e4 31.Qb3 Qd5-+) 28...Nc1 29.Rc1 e5 30.Be2 g6 (30...e4!? 31.Nh2-+) 31.Rd1 Qe7 32.Rb1 Qc7 33.Nd2 (33.Ne5 Qe5 34.Rb6 Qa1 35.Bf1-+) 33...Kg7 34.f3 Kf6 35.Nc4 (35.Kf2 f4-+) 35...Nc4 36.Bc4 Qd6 37.Kh2 f4 38.e4 Qd2 (38...Kg5 39.Rb7 h6 40.Bd5-+) 39.h4? (better 39.Rb7 Qd4 40.Bd5-+) 39...Qf2 40.Rb6 Kg7 41.Rb7 Kh6 42.Bg8 (42.h5 gh5 43.Be6 Qg3 44.Kg1 Qe1 45.Kh2 Qh4 46.Kg1 Qd8-+) 42...Qh4 43.Kg1 Qe1 (43...Qd8!? 44.Rh7 Kg5 45.Bd5-+) 44.Kh2 g5 45.Rh7 Kg6 46.Rc7 Qh4 47.Kg1 Qe1 48.Kh2 Qe3 (48...Qg3!? 49.Kh1-+) 49.Bd5 Kf6?? (49...Qd4 50.Rc6 Kg7 51.Rc7 Kf8 52.Kh1-+) 50.Rc6?? (50.Rf7 Kg6 51.Rc7-+) 50...Kg7-+ 51.Rc7 Kf8 52.Rc8 Ke7 53.Rc6 g4 54.Re6 Kd7 55.fg4 Kc7 (55...c4 56.Rg6 c3 57.Rg7 Kd6 58.Rg6 Kc5 59.Rc6 Kd4-+) 56.Rc6 Kd7 57.g5?? (57.Re6 c4 58.Rg6-+) 57...Qg3-+ 58.Kh1 c4 (better 58...Qg5 59.Ra6 c4 60.Bc4 f3 61.Bb5 Kd8 62.gf3 Qc1 63.Kg2 Qb2 64.Kg3 Qb5 65.Rd6 Ke7-+) 59.Rc4 Qe1 (59...Qe1 60.Kh2 Qh4 61.Kg1 Qg5-+) 0-1. bjoernsen (2310) - Killerkaz (2310), Elite SuperBlitz Arena, lichess.org, 2017.

9.bc6 bc6 10.Bf6 ½–½. Palac,Mladen (2580) – Zelcic,Robert (2540), Verona op, 2002.

9.d4 cb5-/+ 10.Nbd2 (10.Bb5?? Qa5 11.Nc3 Nd5-+) 10...Bb4 (better 10...Qa5!?-/+) 11.Bb5 Qa5 (11...d5 12.0-0=) 12.Bd3 d5 13.0-0 Nc6 14.c4 dc4 (14...Qa2!?=) 15.Nc4+/- Qc7 16.e4 (16.Qb1 Bd7+/-) 16...Rd8 (16...Be7!?+=) 17.Qb1+/- Be7 18.Rc1 Bd7 (18...h6 19.g3+/-) 19.Nb6+- Be8 (19...Qf4 20.Bc3 Bb4 A) worse 21.Bb4 Nb4 22.Nd7 Nd7+/- (22...Nd3? 23.Nf6 gf6 24.Rd1+-); B) 21.d5 Bc3 22.dc6 (22.Rc3?! Ne5=) 22...Bc6 23.Rc3 Be4 24.Rc4 Bd3 25.Qd3+- (25.Rf4? Bb1 26.h4 Ne4-+)) 20.d5! ed5 (20...Bb4 21.dc6 Qb6+-) 21.ed5?? (better 21.Be5! Rd6 22.Nd5+-) 21...Nd5+= 22.Bh7 Kf8 23.Nd5 Rd5 24.Be4 Rc5 25.Rc5 (25.Re1 f6+=) 25...Bc5 26.Qb2 (26.Bc3 Qe7=) 26...f6= 27.Qc2 Nb4 28.Qd2 Bc6 29.Bc6 bc6 30.Nd4 Qd6 31.g3 Bd4 32.Qd4 (worse 32.Bd4 c5 33.Bc3 Qd2 34.Bd2 Na2-+) 32...Qd4 33.Bd4 Ke7?? (better 33...Kf7=) 34.Bc5+- Ke6 35.Bb4 Kd5 36.Kf1 Kc4 (36...c5 37.Bd2+-) 37.Bf8 g6 38.Ke2 c5 (38...Kd5+-) 39.h4 Kd5 40.g4 c4 (40...Ke6 41.Bc5 Ke5+-) 41.h5 gh5 42.gh5 (42.gh5 Ke6 43.h6+-) 1-0. Lance5500 (2620) - DIMITROULAS (1820), lichess.org, 2018.

7.cb5 c6 8.a4 c5 9.Be2 d6 10.0-0 Nbd7 (10...e5 11.d3=) 11.d4 Ne4 (11...d5 12.dc5 Nc5 13.Be5=) 12.Nfd2 (12.Nc3 d5=) 12...f5 13.Ne4 fe4 14.Qb3 (14.Bg4!?=) 14...d5+= 15.Nd2 c4 16.Nc4 dc4 17.Bc4 Nf6 18.Be6 Kh8 19.d5 (19.Rfc1 Qb6 20.Bc8 Rac8 21.Rc8 Rc8+=) 19...Nd7 (19...Be6 20.de6 Qa5+=) 20.Rac1 (better is 20.Bd4=) 20...Qa5?? (better is 20...Nc5!? 21.Qc3 Ne6 22.de6 Bf6–/+) 21.Ba3 (21.Rc8!? Rac8 22.Bd7+-) 21...Qd8 (better is 21...Ba3 22.Qa3 Qd8=) 22.b6?? (22.d6 Bh4 23.Qc2=) 22...Nf6?? (better is 22...Ba3!? 23.Qa3 Nb6 24.Bc8 Nc8–/+) 23.a5 (better is 23.Rc8!? Rc8 24.Bc8 Ba3 25.Bb7+/– (worse is 25.Qa3 Qc8 26.Rc1 Qd8=) 23...Be6 24.Be7 Qe7 25.de6 The passed pawn on e6 will quickly become a dangerous weapon 25...Rfe8 (25...Ra5 26.Rc7 Qd6 27.e7–/+) 26.Rc7 Qe6 (26...Qd6+=) 27.Qc3 (better is 27.Qe6 Re6 28.Rb7 Ra5 29.Rb1=) 27...Re7 28.Rc1 (28.Rd1 Nd5 29.Rd5 Qd5–+) 28...h6 (28...Nd5 29.Re7 Ne7 30.Qe1–/+) 29.Re7 (29.Rc8 Rc8 30.Qc8 Qc8 31.Rc8 Kh7–/+) 29...Qe7 30.h3 (30.Rd1 Qe6–/+) 30...Nd5 31.Qd2 (31.Qc5 Qg5–/+) 31...Rd8 (31...Qa3 32.a6 ba6 33.b7+=) 32.Qd4–/+ Nf6 (32...Nf4 33.Qc5 Ne2 34.Kh2–/+) 33.Rc7 Rd4 34.Re7 Rd7 35.Re5 Kg8 (35...g5 36.f3–/+) 36.f4 (36.a6 ba6 37.Ra5 Rd2–+) 36...Kf7 (36...Rd1 37.Kh2–/+) 37.g4 Rd5 (37...Rd1 38.Kf2 Rd2 39.Ke1 Rh2–/+) 38.a6? (better is 38.Rd5 Nd5 39.a6 Nb6 40.ab7=) 38...ba6?? (better is 38...Rd1 39.Kf2 ba6–+) 39.Rd5+- (39.Rd5 g6 40.Ra5+-) 1–0. Twombly,R – Wright,R, Houston TX USA, 1994.

7.cb5 c6 8.Be2 cb5 9.Bb5 d5=.

7.cb5 d5 8.Be2 c5 9.bc6 bc6 10.0-0= h6 11.Nc3 Ba6 12.a4 Be2 13.Qe2 Nbd7 14.Rfb1 Qa5 15.Nd4 Rfc8 16.Nb3 Qc7 17.Ba3 Ba3 18.Ra3 c5 19.Nb5 Qc6 20.d3 Nb6 21.Qe1 Ra6 22.Qd2 Na4 23.Nc1 Rb8 24.Nd4 Qe8 25.Rb8 Qb8 26.Nf3 Qb4 27.Qb4 cb4 28.Ra1 1–0. ST_KAOURAS – winugly123, ChessWorld.net, 2009.

7.cb5 d6 8.Bc4+=.

6.a4 a6 7.Be2 ab5 8.ab5 Ra1 9.Ba1 Bb7 10.0-0 Bd6 11.c4 Bf3 (better 11...Ng4!? 12.g3 f5+=) 12.Bf3+/- c6 13.Nc3 Qc7 14.g3 h6 15.Qb3 Nh7 16.Na4 Ng5 17.Bg2 c5 (17...e5 18.d4 Ne6 19.de5 Be5 20.Be5 Qe5 21.Nb6+-) 18.f4 Nh7 19.Qb2 (19.d4 Be7+-) 19...Nf6 20.e4 e5?? (better 20...Be7 21.e5 Ne8+-) 21.fe5 Be5 22.Qe5 Qe5 (22...d6 23.Qc3 Nbd7+-) 23.Be5 Nh5 (23...Re8 24.Bf6 gf6 25.Nb6+-) 24.Nb6 f6 (24...g5 25.Bd6 Re8 26.e5+-) 25.Bd6 Re8 26.g4 Re6 27.Bc5 d6 28.Bd4 1-0. DEFFM – GuestHPJM, freechess.org, 2021.

6.a4 Bb7 7.Be2 c5 8.0-0 d5 9.c4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4).

6.a4 Bb7 7.Be2 c5 8.0-0 d5 9.d3 Nbd7 10.Nbd2 Qc7 11.c4 dc4 12.Nc4 Rfe8 13.Nfe5 Rad8 14.a5+= Bd5. pcmvr (2225) – guerino (2100), net–chess.com, 2006.

6.a4 Bb7 7.Be2 c5 8.0-0 d5 9.d3 Nbd7 10.Nbd2 h6 11.c4 Re8 12.Qc2 Nf8 13.a5+= dc4 14.Nc4+/– Rc8 15.e4 Ng6 16.a6 Ba8+= 17.Nfe5 Ne5 18.Be5 Qd7 19.Qb3 Qd8 20.Rae1 Qd7 21.Rd1 Red8 22.Bg3 Qe8 23.Rde1 Nd7 24.Bg4 Nf6 25.Bd1 Qd7 26.Be2 Qe8 27.f4 Rd4 28.f5 ef5 29.Rf5 Rcd8 30.Be5 Qf8? 31.Ref1 R4d7+/– 32.R1f3 Qe8 33.Rg3 Kh7 34.Qb1 Qf8 35.Qf1 Qh8 36.Bf6 Bf6 37.Rf6 gf6 38.Qf5 1–0. pcmvr (2110) – kostaspetidis (2105), net–chess.com, 2006.

6.a4 Bb7 7.Be2 d6 8.0-0 c6 9.c4 c5 10.d3 d5 11.Nbd2 dc4 12.Nc4 Nbd7 13.Nfd2 Qc7 14.a5+= Rfd8 15.f4 Nf8 16.ab6 ab6 17.Be5 Ng6?? 18.Bc7 1–0. pcmvr (2225) – guerino (2100), net–chess.com, 2006.

6.c3 Bb7 7.Be2 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 d6 11.d4 Nbd7 12.Nbd2 e5 13.0-0 e4 14.Ne1 Re8 15.c4 d5 16.Nc2 dc4 17.Nc4 Nd5 18.Qb1 N7f6 19.Ne5 Bd6 20.Qb3 Be5 21.de5 Nd7 22.Rd1 Nc5 (22...Ne5? 23.Nb4 Nd3 24.Bd3 Nb4 25.Bc4+-) 23.Qc4 Nd3 (23...Qd7!?+=) 24.Bd3+/- ed3 25.Qd3 Qg5 26.Ne1 Nb4?? (26...c5!?+/-) 27.Qc4 (better 27.Qd7!? Rf8 28.Qc7 Ba8+-) 27...c5 (better 27...Qe7+-) 28.bc6! Nc6 (28...Nc6 29.Rd7 Decoy; 28...Bc6 29.Qb4 Combination) 29.Nf3?? (better 29.Rd7!? Rf8 30.e6 Ba8+-) 29...Qh5 (29...Qg6!? 30.Qb5 Qc2+/-) 30.Qb5+- h6 31.Rd7 (31.Qb6!? Ba8 32.e4 Qg4+-) 31...Ba8 32.h3 (32.Qb6 Rb8 33.Qb8 Nb8 34.Rd8 Kh7 35.Rb8 Bf3 36.gf3 Qf3-/+) 32...Qf5 33.Rc7 Qe4 34.Bc3 Kh7 (better 34...Rb8!?+/-) 35.Rf7+- Qc2 36.Bb2 Nd8?? (better 36...Rg8+-) 37.Rg7! (37.Qe8?! Nf7 38.e6 Nd6 39.Qa8 Qb2+-) 37...Kg7 38.Qe8 (better 38.Qd7 Kf8 39.Ba3 Qc5 40.Bc5 bc5+-) 38...Qb2 (38...Qb1 39.Kh2 Qb2 40.Qd7 (40.Qd8?! Bf3 41.Qf6 Kh7 42.Qf3 Qe5 43.g3 Qe6+-) 40...Nf7 41.Nd4+-) 39.Qd8 Bf3 40.Qe7 Kg6 41.Qe6 Kh5 (41...Kg7 42.gf3 b5+-) 42.gf3 (42.g4 Bg4 43.Qg4) 42...Qb1+- 43.Kg2 Qg6 44.Qg4 Qg4 45.fg4 (45.fg4 Kg6 46.Kf3+-) 1-0. bjoernsen (2430) - Geekaos (2410), Rated blitz game, lichess.org, 2021.

6.Nc3 Bb7=.

6.c4 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0).

6.c4 Bb7 7.Be2 d5 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 d5 7.Be2 0-0).

6.c4 Bb7 7.Be2 d5 8.0-0 (-->1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.Be2 d5 8.0-0).

6.c4 d6 7.d4 Bb7 8.Nc3 Nbd7 9.Bd3 a6 10.a4 a5 11.0-0 d5 12.Qc2 dc4 13.Bc4 Bf3 14.gf3 Bd6 15.Kh1 Nh5 16.Rg1 Rc8 17.Rg2 c6 18.Ba2 cb5 19.ab5 Nhf6 20.Rag1 g6 21.Bb1 Bb4 22.Qd3 Ne5 23.de5 Qd3 24.Bd3 Bc3 25.Ba3 Rfd8 (25...Be5?! 26.Bf8 Kf8 27.f4+=) 26.ef6 Rd3 27.Rc1 Rcd8 (27...Rcd8 28.Be7 R8d5–/+) 0–1. Harazinska,Ewa – Sokolowska,Anna, PPJ – D10 Ustron / PZSzach Poland, 2007.

6.c4 Ne4 7.Be2 Bf6 8.d4 c5 9.Nbd2 Bb7 10.0-0 d6 11.Qc2 Nd2= 12.Qd2 Nd7 13.a4 a5 14.Rad1 d5 15.Rfe1 Re8 16.Bd3 Rc8 17.Qc2= h6 18.Qb1 cd4 19.Nd4 Bd4 20.Bh7 Kh8–/+ 21.Bd4 Rc4 22.Bd3 Ra4 23.Qb3 Rb4–+ 24.Qa3 Qe7 25.Qa1 e5 26.Bc3 Rg4 27.Bf5 Rg5 28.Bd7 Rg2?? 29.Kg2= Qg5?? 30.Kh1 d4 31.e4 Re7 32.Bd2 (32.Bd2 Qh5 33.Ba5 Rd7 34.Bb6=) 1–0. pumpkin (2230) – eweram (1675), net–chess.com, 2005.

6.d4 a6 7.a4+=.

6.d4 Bb7 7.Nbd2 d5 (7...a6 8.a4+=) 8.Bd3= Nbd7 9.0-0 Ne4 (9...c5 10.c4=) 10.c4+= Ndf6 11.a4 (11.Rc1 a6 12.cd5 Nd2 13.Qd2 Nd5=) 11...Nd2 (11...a6 12.Ba3=) 12.Nd2 dc4 13.Bc4 (13.Nc4 a6=) 13...c5 (13...c6 14.Qc2=) 14.bc6 (14.dc5 Bc5 15.Qe2 Qe7=) 14...Bc6 15.Qe2 (15.Qb3 Rc8=) 15...Qd7 16.Bb5 (16.a5 Rfb8=) 16...Bb5 (16...Rfc8 17.Rfc1=) 17.ab5 Rac8 (17...Rfc8 18.Nf3=) 18.Nf3+= White is in command 18...Rc7 19.Ne5 Qd5 20.Nc6 (better is 20.Rfc1 Rfc8 21.Nc6+=) 20...a5? (better is 20...Ra8+=) 21.Ne7+- Re7 22.Ba3 Rc7 (22...Rfe8 23.Be7 Re7 24.Rfc1+-) 23.Bf8 Kf8 24.Rfc1 Ne8 (24...Qd8 25.Rc6 Nd5 26.Rc7 Qc7 27.e4+-) 25.Qd3 (25.Rc7 Nc7 26.Qc2 Nb5 27.Qh7 g6+-) 25...Rc1 (25...Kg8 26.Rc7 Nc7 27.Rc1+-) 26.Rc1 Nd6 (26...h6 27.Rc6+-) 27.Rb1 (27.Qh7 Ne8+-) 27...Qa2 (27...Qe4 28.Qe4 Ne4 29.Rc1+-) 28.e4 (28.Qh7!? g6 29.Qh8 Ke7+-) 28...a4 (28...Qc4 29.Qc4 Nc4 30.d5+-) 29.d5 (29.e5 Nf5+-) 29...ed5 30.ed5 (30.ed5 Kg8 31.Re1+-) 1–0. Labahn,Wolfgang – Funkel, Vergleichskampf SV E, 1988.

6.d4 Bb7 7.Bd3 a6+=.

6.d4 Bb7 7.Bd3 c5 8.0-0 (8.dc5 bc5 9.0-0 d5=) 8...d6 9.dc5 bc5 10.c4 Nbd7 11.Nbd2 d5 12.a4 Qc7 13.Qc2 Bd6 14.h3 (14.cd5 ed5 15.Rac1 a6=) 14...Rac8 15.Rfd1 Ne5 16.Ne5 Be5 17.Nf3 (17.Be5 Qe5 18.Nf3 Qh5=) 17...Bb2 18.Qb2 d4 (18...dc4 19.Bc4 Bf3 20.gf3+=) 19.ed4 Bf3 20.gf3 Qf4 (20...Rfd8 21.dc5 Qc5 22.Rac1=) 21.Be2 (21.Qc1 Qf3 22.Qe3 Qh5=) 21...Qh4 22.dc5 Rc5 23.Qd4 Qg5 24.Kh2 ½–½. Rogers,Jonathan (2245) – Martin,Andrew D (2430), BCF–ch, 1991.

6.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Bb7 10.0-0 d6 11.c4 Nbd7 12.d4 Ne4 13.Bb2 f5 14.Nfd2 Ndf6 15.Ne4 Ne4 16.f3 Nf6 17.Qb3 Kh8 18.Nc3 Qd7 19.Ra1 Ra8 20.Ra8 Ba8 21.Bd3 Qc8 22.Qc2 h6 23.d5 ed5 24.Bf5 Qg8 25.Ne2 dc4? 26.Nf4+- Qf7 27.Be6 Be4 28.fe4 (28.fe4 Qe8 29.e5+-; 28.Bf7?! Bc2 29.Bc4 Ne8+/–) 1–0. luciano59 (2100) – kostovist (1650), internet, 2006.

6.Ne5 Bb7!? =+.

6.Ne5 d6 7.Qf3= d5 8.Nc3 (8.Bd3 a6=) 8...Bb7 9.Be2 Nbd7 10.Nd7 Qd7 11.0-0 Rab8 (11...c6 12.Rfb1=) 12.Qg3 Bd6 13.f4 Bb4 (better is 13...Be7!?=) 14.Nd5+/– Bd5 (better is 14...Qd5!? 15.Bf6 Qg2 16.Qg2 Bg2 17.Kg2 gf6+/–) 15.Bf6+- g6 16.a3 (16.Qh4 h5 17.Bh5 Be7 18.Be7 Qb5+-) 16...Be7 17.Be7 Qe7 18.c4 Be4 19.d3 Bb7 20.Bf3 Bf3 21.Qf3 Qd6 22.Rfd1 Rbd8 23.d4+- Qe7 24.e4 f5 25.e5 Rd7 26.Rd2 Rfd8 27.Rad1 Kg7 28.Rd3 g5 29.Qg3 h6 30.R1d2 Kg6 31.h4 Kh5 32.hg5 hg5 33.Qh2 Kg6 34.fg5 Rg8 35.Rh3 Rg7 36.Rh6 Kf7 37.d5 ed5 38.e6 Kg8 39.Rh8 1–0. b4_player (2230) – realsnake (1765), GameColony.com, 2003.

6.Bf6 Bf6 7.d4 a6=.

7.0-0 a6 8.a4 d6 9.c4 ab5 10.ab5 Ra1 11.Ba1 Nbd7 12.d4 Qa8 13.Nc3 Ne4 (13...c5 14.Bb2=) 14.Qc2 f5 15.Bb2 Nc3 16.Qc3 Nf6 17.Ra1 Qb8 18.Nd2 c6 19.bc6 Bc6 20.Bf3 (20.Qb3 Qb7+=) 20...Bf3= 21.Nf3 Rc8 22.Qb3 (22.Qd3 d5 23.cd5 Nd5+=) 22...Qc7 (22...d5 23.cd5 Nd5 24.Qb5=) 23.Rc1 (23.Ng5 d5 24.Ne6 dc4+=) 23...d5= 24.Nd2 Ne4 25.Ne4 (25.cd5?? Qc1 26.Bc1 Rc1 27.Nf1 Rf1 28.Kf1 Nd2 29.Ke2 Nb3 30.de6 Kf8-+) 25...fe4 26.Qc2 (better 26.c5!?=) 26...Qc4-/+ 27.Qd1 Qa6 28.g3 (28.Ra1!? Qb5 29.Ba3 Ba3 30.Ra3-/+) 28...Rc1-+ 29.Qc1 Qc4 30.Qd1 b5 31.Qh5 Qc6 32.Qe5 Qd6 33.Qh5 g6 34.Qe2 Qb4 35.Qg4 (35.Kg2 Kg7-+) 35...Qb2 36.Qe6 Kf8 37.Qd5 Qb1 38.Kg2 b4 (better 38...Qd3-+) 39.Qa8= Kf7 40.Qd5 Kg7 41.Qd7 Kf8 42.Qc8 Kf7 43.Qc4 Ke8 44.Qc8 Kf7 45.Qc4 Kg7 46.Qc7 Kf6 47.Qc6 Kf7 48.Qc4 ½-½. Osmak,Iulija (2425) - Atharvaa P Tayade (1925), 1st FIDE World Uni BlitzB, 2021.

7.0-0 c6 8.a4 cb5 9.ab5 d6 10.c4+= Nbd7 (10...a5 11.ba6 Ra6 12.Ra6 Na6 13.d4+=) 11.d4 d5 12.Nbd2 dc4 13.Bc4 Nd5 (13...h6 14.Qe2+-) 14.e4 Nf4 15.Qb3 Ng6 16.Be6?? (better 16.g3+-) 16...fe6–/+ 17.Qe6 Kh8 18.Qb3 Nf4 19.Rfe1 (19.g3 Nh3 20.Kg2 Ng5 21.Ng5 Bg5–/+) 19...Qe8 20.g3 (20.Ba3!?–/+) 20...Nh3–+ 21.Kg2 Qh5 (better 21...Bg5 22.Re2 Bd2 23.Nd2 Qg6–+) 22.Qe6? (better 22.Ba3 Ba3 23.Ra3–+) 22...Nf4?? (better 22...Rf3 23.Nf3 Qf3 24.Kf3 Ng5 25.Ke3 Ne6–+) 23.gf4+- Rf4 (23...Qe8 24.Ba3 Rf7+-) 24.Qe7 (24.Qd7?! Rg4 25.Kh1 Qh3 26.Qg4 Qg4=) 24...Rg4 (24...Raf8 25.Ra3 (25.Qd7?! Rf3 26.Nf3 Qf3 27.Kg1 Qf2 28.Kh1 Qf3 29.Kg1 Qf2 30.Kh1 Qf3 31.Kg1 Qf2=) 25...Qg4 26.Kh1+-) 25.Kh1 Qh3 (25...a5 26.ba6 Qh3 27.Rg1 Be4 28.Rg4 Qg4 29.Qe4 Qe4 30.Ne4+-) 26.Rg1 Rg1 (26...Be4 27.Rg4 Bf3 28.Nf3 Qg4+-) 27.Rg1 Rf8 (27...Qh6 28.d5 Rg8 29.Qd7 Bc8 30.Ne5 Qh2 31.Kh2 h6 32.Ng6 Kh7 33.Nf8 Kh8 34.Bg7 Rg7 35.Qg7) 28.Qg7 1–0. DEFFM – GuestMSLC, freechess.org, 2019.

7.0-0 d5 8.a4 c5 9.d4 Nbd7 10.dc5 (10.dc5 Nc5 11.Bd4=). Van Rooijen,Peter (1700) – Calderon,Jacobo Cruz, Liape B–001 email, 2002.

7.0-0 d6 8.d4 Nbd7 9.a4 a5 10.c4 Ne4 (10...Rc8 11.Nc3=) 11.Nbd2 Nd2 12.Nd2 f5 13.Bf3 Qc8 14.Re1 Nf6 15.e4 fe4 16.Ne4 Ne4 17.Be4 Bf6 (17...Rf6!?+/-) 18.Bb7 Qb7 19.Re6 Rae8 20.Qe1 (20.Qe2 Qc8 21.Re1 Re6 22.Qe6 Qe6 23.Re6 Rd8+/-) 20...Re6 (20...Qc8!? 21.Re2 Bh4 22.Re8 Re8+/-) 21.Qe6+- Kh8 22.Re1 Qa8 23.f4 Bh4 24.Re3 Rf4? (better 24...Bf6+-) 25.g3 Rf8 26.gh4 Qd8 (26...d5 27.Qd5 Qd5 28.cd5+-) 27.Qe7 (better 27.d5!? Rf4 28.Qe8 Rf8 29.Qd8 Rd8+-) 27...Qc8 (27...d5+-) 28.Rg3 (28.Rg3 Rg8 29.d5+-) 1-0. onur604 (2320) - Piependeckel (2350), Casual Rapid game, lichess.org, 2021.

7.c4 c5 8.0-0 d6 9.Nc3 Nbd7 10.a4 Qc7 11.Qb3 d5 12.d3 dc4 13.dc4 Rad8 14.Rfd1 Ng4 15.h3 Bf3 16.hg4 Be2 17.Ne2 Bf6 18.Bf6 Nf6 19.f3 Rd1 20.Rd1 Rd8 21.Nf4 Rd1 22.Qd1 Qd7 23.Qd3 Qd3 24.Nd3 Nd7 25.Kf2 Kf8 26.f4 Ke7 27.Kf3 f6 28.e4 Kd6 29.g3 g6 30.Ne1 Nf8 31.Ng2 g5 32.Ke3 Ng6 33.Kf3 Ke7 34.Ke3 ½–½. Kreuzer – Schrepp, Nordbaden 1983.

7.d4 a6 8.0-0+=.

7.d4 c5 8.0-0= d6 (8...a6 9.Bd3=) 9.dc5 bc5 (9...dc5 10.Nc3=) 10.c4 Nbd7 11.Nc3 Qc7 12.Qc2 Ne8 (12...Rab8 13.Rfd1+=) 13.Bd3 (13.Rfd1 Nef6+=) 13...g6 (13...f5 14.Be2=) 14.Ne4 (14.e4 f5+=) 14...e5 15.Nc3 f5 (15...Bf3 16.gf3 Nef6 17.Rfd1+=) 16.e4 (16.Nd5 Bd5 17.cd5 Nb6+=) 16...f4 (16...fe4!? 17.Be4 Nef6+=) 17.Nd5+/– Qd8 (17...Bd5 18.cd5 Rc8 19.Rac1+/–) 18.Ne7 Qe7 19.Nd2 (19.Rfd1 Nef6+/–) 19...Nc7 20.f3 (20.Rfd1 Qg5+/–) 20...Ne6+= 21.Nb3 g5 (21...Nd4 22.Nd4 cd4 23.Rfd1+=) 22.Qf2 (22.Rfd1 Rab8+/–) 22...Rf6 (22...Nd4 23.Rfd1+/–) 23.Rfd1+/– Kh8 (23...Rb8 24.Qd2+/–) 24.Kf1 (24.Qd2 Rb8+/–) 24...Rg8 25.h3 (25.Kg1 Ra8 26.Qd2 Rb8+/–) 25...h5 (25...Nd4 26.Kg1+=) 26.Ke2 (26.Kg1 g4 27.hg4 hg4+=) 26...Nd4 27.Bd4 (27.Ke1 Re8+=) 27...ed4 28.Kd2 (28.Kf1 Ne5=) 28...Ne5 29.Re1 Rh6 30.a4 Qf6 31.a5= g4 32.hg4 hg4 33.Rh1 gf3 34.Rh6+= Qh6 35.gf3. Neuwald,Volker – Simon,Holger (2135), Baden HT opA, 2001.

6.c4 b6 7.Be2= Bb7 (7...d5 8.0-0=) 8.0-0 a6 (8...d5 9.d4=) 9.a4 (9.ba6 Na6 10.d3 d5=) 9...ab5 (9...d5 10.ba6 Na6 11.d4=) 10.ab5 Ra1 11.Ba1 d5 12.d4 (12.d3 dc4 13.dc4 Be4=) 12...Nbd7 (12...dc4 13.Bc4 Bd5 14.Nbd2=) 13.Nc3 Qc7 (13...cd4 14.Nd4 Nc5 15.cd5 Nd5 16.Nc6 Bc6 17.bc6 Nc3 18.Bc3=) 14.Qb3 (14.Qd3 Rc8 15.Nd2 cd4 16.Qd4 e5+=) 14...dc4 (better is 14...cd4 15.Nd4 Nc5+=) 15.Bc4 (15.Qc4 Bd6=) 15...cd4 (better is 15...Bf3!? 16.gf3 cd4 17.ed4 Ra8–/+) 16.Nd4= Ng4 17.g3 Nc5 18.Qd1 Ne5 19.Be2 Rd8 20.f4 Ned7 21.Bf3 Nf6 22.Bb7 Qb7 23.Qe2 (23.Qf3 Qf3 24.Rf3 Nd3+=) 23...Nfe4 24.Nc6 (24.Ne4 Qe4 25.Nc6 Rd7+=) 24...Rd2 25.Qf3 f5 26.Ne4 Ne4 27.Rd1 Bc5 28.Rd2 (28.Bd4 Rd1 29.Qd1 Bd4 30.ed4 Qd7=) 28...Nd2+= 29.Qe2 Qd7 (29...Ne4 30.Bd4=) 30.Bd4 Ne4 31.Qa2 (31.Ne5 Qd6=) 31...Bd4 (31...Qe8 32.Bc5 bc5 33.Qc4=) 32.Qa8 Kf7 33.ed4 Qc7 34.Ne5 Ke7 35.Nc6 (35.Qa3 Ke8+/–) 35...Kf7 36.Qh8 Kg6 37.Qe8 Kf6 38.Qf8 Kg6 39.Qe8 (39.Ne5 Kh6 40.Nc6 Kg6=) 39...Kf6 40.Ne5 (better is 40.Qg8+/–) 40...Nd6?? (40...Qc1 41.Kg2 Qd2 42.Kh3 Nf2 43.Kh4 g5 44.Kh5 Qe2 45.g4 Qg4 46.Ng4 Kg7 47.Qe7 Kg8 48.Nf6 Kh8 49.Qh7) 41.Nd7+- (41.Nd7 Qd7 42.Qd7+-) 1–0. Golyak,Isay G (2275) – Almeida,Sergio, New York State–ch, 2001.

6.c4 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0).

6.c4 d5 7.Nc3 Nbd7 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.c4 Nbd7 6.Nf3 Be7 7.Nc3 0-0).

6.c4 d6 7.Be2 Nbd7 (7...a6 8.ba6 Na6 9.0-0=) 8.Nc3 Qc7 (8...a6 9.ba6 ba6 10.Rb1=) 9.Qb3 (9.0-0 d5=) 9...Rd8 (9...Nb6 10.0-0=) 10.0-0 Nf8 (10...e5 11.d3=) 11.e4 (11.d3 d5=) 11...e5 (11...Ng6 12.Rfe1=) 12.Ne1 (12.Bc1 Ng6=) 12...Ne6+= 13.Nc2 Re8 (13...Nf4 14.Rae1+=) 14.Ne3 (14.Rfe1 Qd7=) 14...Nd4 (14...Nf4 15.Rfe1=) 15.Qd1 Qd8 16.d3 Nd7 (16...a6 17.ba6 ba6 18.Rb1=) 17.Ncd5 Bg5 18.Bg4 Nf6 (18...a6 19.a4=) 19.Nf6 Qf6 (19...Bf6 20.Bc8 Rc8 21.Bd4 cd4 22.Nd5+=) 20.Nd5 Qd8 21.Bd4 ed4 22.f4 Be7 23.Bc8 Rc8 24.Qg4 Bf8 (24...Bh4 25.Rf3+/–) 25.f5 Kh8 (25...f6 26.a4+/–) 26.f6 g6 27.Rf3 (27.Qh3 Rb8+/–) 27...Re5 (27...Rb8 28.Rh3+/–) 28.Raf1 (28.a4 Bh6+/–) 28...Qe8 (28...Bh6 29.Rh3 Bd2 30.a4+/–) 29.Rh3 Qe6 (29...h6 30.a4+/–) 30.Qf3 (30.Qe6 Re6 31.a4 Kg8+/–) 30...Rg5 (better is 30...a6+/–) 31.Qf4?? (31.a4 Re5+/–) 31...Rg4?? (better is 31...Qh3! 32.Qg5 Qd3–/+) 32.Qf3 Rg5 33.Rg3 Qe5 34.Rg5 Qg5 35.Qf4 Qf4 36.Rf4 Re8 37.g4 Bh6 38.Rf3 Bg5 39.Kg2 Bh4 40.Kh3 Bg5 41.Kg3 Re5 42.h4 Bd2 43.Ne7 Re6 44.Nc8 a5 45.ba6 ba6 46.Ne7 g5 47.hg5 Bg5 48.Nd5 a5 49.Rf2 h6 50.Rb2 Bf6 ½–½. Kreuzer – Dieter, 1982.

6.Be5 d6 7.Bf4 Nh5=+.

6.a4 a5 7.Nc3 b6 8.Bd3 c5 9.0-0 Bb7 10.e4 d5 11.ed5 Nd5 12.Nd5 Bd5 13.Ne5 f6 14.Qh5 f5 15.c4 Bb7 16.Qe2 Qc8 17.Rfe1 Bf6 18.Bc3 Nd7 19.Nd7 Qd7 20.Qe6 Qe6 21.Re6 Bc3 22.dc3 Rf6 23.Rf6 gf6 24.Bf5 Rd8 25.Re1 Bc8 26.Bc8 Rc8 27.Re6 1–0. usingprogram (2020) – molidul1, kurnik, 2012.

6.a4 Qa5 7.Be2 a6 (7...d5 8.Nc3=) 8.0-0 Nd5 (8...Qc7 9.h3+=) 9.c4 Bf6 (better 9...Nb4!?+/-) 10.d4+- (10.cd5 Bb2 11.Ra2 Bf6 12.bc6 Qd5 13.cb7 Bb7=) 10...Nb4 11.Nbd2 c5? (better 11...Be7+-) 12.Ne4 Be7 13.dc5 f5 14.Qd4 Bf6 (14...Rf7 15.Neg5 Nc2+-) 15.Nf6 gf6 16.Bc3 e5 (16...Nc2 17.Ba5 Nd4 18.Nd4+-) 17.Qd2 Kg7 (17...Qd8 18.Bb4 Qe8 19.Rfd1+-) 18.Nh4 N4c6 (18...d6 19.Bb4 Qd8+-) 19.Nf5 (19.Nf5 Kh8 20.Ba5 Na5 21.Qd6+-) 1-0. DEFFM – GuestKDXP, freechess.org, 2021.

6.a4 a6 7.c4 ab5 8.ab5 Ra1 9.Ba1 cb5 10.cb5 Qa5 11.Bc3 Qc7 12.Be2 Nd5 13.Bb2 Qa5 (13...d6!?=) 14.0-0+- Qa2 (14...Nb4 15.Nc3 d5 16.Qb3+-) 15.Qc1 d6 16.Nc3 Nc3 (16...Qb3!?+-) 17.Qc3+- (17.Bc3?! Nd7+=; 17.dc3?! Nd7+=) 17...Bf6 18.d4 Bd7 (18...Qa7 19.Qc7 Qa2 20.Qc2+-) 19.Ra1 Qd5 20.Ra7 (20.Qd3 e5 21.de5 Qd3 22.Bd3 de5 23.Be5 Be5 24.Ne5 Re8+-) 20...Rc8? (better 20...Bb5 21.Ra5 Be2 22.Rd5 ed5+-) 21.Qd3 h6 (21...Bd8 22.e4 Qh5 23.Rb7+-) 22.e4 Qh5 23.Rb7 g5 (23...Qg6+-) 24.Ne5 Qh4 (24...Qe2 25.Qe2 de5 26.de5 Be5+-) 25.g3 Qh3 26.Bg4 (26.Bg4 Qg4 27.Ng4+-) 1–0. GuestGGLB – GuestQKFG, freechess.org, 2019.

6.a4 a6 7.c4 ab5 8.ab5= Ra1 9.Ba1 d5 10.Nc3 Nbd7 11.Be2 (11.d4 Bb4 12.Qa4 c5 13.dc5 Bc5 14.cd5 Nb6=) 11...Nc5 (11...dc4 12.bc6 bc6 13.Bc4=) 12.0-0 Bd7 13.Qc2 (13.d4 Nce4=) 13...Qc7 (13...dc4 14.Bc4 cb5 15.Nb5= (worse is 15.Bb5 Bb5 16.Nb5 Qd3+=)) 14.Rc1 (14.d4 Nce4 15.bc6 Bc6 16.Ne4 Ne4=) 14...Ra8+= 15.cd5 cd5 (15...ed5 16.bc6 Bc6+=) 16.Nd4 (better is 16.Na4 Rc8 17.Bf6 gf6 18.d4+=) 16...Nce4?? (16...e5 17.Nf5 Bf5 18.Qf5–+) 17.f3?? (better is 17.Ne4 Qc2 A) 18.Rc2?? Ra1 (18...Ne4?! 19.Bb2=; 18...de4?! 19.Bc3+=) 19.Bf1 Ne4–+; B) worse is 18.Nc2 Ne4 (worse is 18...de4 19.f3=) 19.d4 Nd6–/+; C) 18.Nf6 Bf6 19.Nc2+-) 17...Nd6 (17...Nc3 18.Qc3 Qb6 19.Qd3+=) 18.Qb2 (better is 18.f4!?=) 18...Nc4–/+ 19.Bc4 Qc4 (19...dc4 20.e4–/+) 20.Qb1 g6 (20...e5 21.d3 Qb4 22.Qb4 Bb4 23.Nc2+=) 21.Kf2 (21.f4!?=) 21...e5+= 22.d3 Qb4 (22...Qc5 23.Nde2+=) 23.Qb4 Bb4 24.Nde2 d4 25.ed4= ed4 26.Ne4 Ne4+= 27.fe4 Bb5–/+ 28.Bd4 Bd3 29.Ng3 b5 30.Ke3 Bc4 31.e5 Ra2 32.Ra1 f5?? 33.ef6+= Rg2 The passed pawn on f6 will quickly become a dangerous weapon 34.Ra8= Kf7 35.Ra7 Kg8 36.Ra8 Kf7 37.Ra7 Ke6 38.Rh7 Bd6 39.Ne4 Bh2?? 40.Re7?? Kf5+/– 41.f7 Bf7 42.Rf7 Kg4 43.Nf2 Kh4?? 44.Bf6+- Kg3 45.Be5 Kh4 46.Rh7 Kg5 47.Bh2 b4 48.Bf4 Kf5 49.Rb7 Rg1 50.Rb4 Re1 51.Kf3 Re6 52.Rb5 Kf6 53.Ne4 Kg7 54.Rb7 Kf8 55.Nc5 Re8 56.Kg4 Rc8 57.Nd7 Ke8 58.Kg5 Rc6 59.Ne5 Rc5 60.Kg6 Kd8 61.Kf6 Kc8 62.Rh7 Rd5 63.Nc6 Rd7 64.Na7 ½–½. Wartenberg,Erwin – Mueller,Olaf2 (1625), Rheinhessen–ch H1 op, 1997.

6.a4 a6 7.c4 b6 8.d4=+.

6.a4 a6 7.Be2 d5 8.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Be2).

6.a4 b6 7.Be2 Bb7 8.0-0 c5 9.c4 d5 10.cd5 Bd5 11.d3 Nbd7 12.Nbd2 Rc8 13.e4 Bb7 14.Nc4 White prepares a5 14...h6 15.Qc1 Qc7 16.a5 Rfd8 17.Nfe5 Nf8 18.Qf4 Qb8? (better is 18...Bd6!?+/–) 19.Bh5! N8h7?? (19...Nh5 20.Qf7 Double attack (20.Qf7 Decoy)) 20.Bf7 Kf8 21.Be6 Rc7 (21...ba5 22.Bc8 Qc8 23.Ra5+-) 22.ab6 ab6 23.Ng6 Ke8 24.e5 Nd5 (24...Ng5 25.ef6 gf6+-) 25.Qf7 1–0. Nemec,Zdenek (2035) – Vontina,Maria, OP–2011–0-01385, 2011.

6.a4 b6 7.Be2 Bb7 8.0-0 c5 (8...a6 9.Nc3=) 9.c4 (9.d4 a6=) 9...h6 (9...d5 10.d4=) 10.a5 (10.Nc3 d5 11.cd5 ed5=) 10...ba5 (10...a6 11.ab6 ab5 12.Ra8 Ba8 13.cb5 Qb6 14.Nc3=) 11.Bc3 Qc8 (11...d5 12.Ba5 Qd6 13.cd5 ed5 14.Qc2=) 12.Ra5+= Ne4 (12...a6 13.d3+=) 13.Bb2 Qc7 14.Qa4 Bd8 (better is 14...a6!? 15.Qa1 Bd8+=) 15.Ra7+/– Qb6?? (better is 15...Ra7 16.Qa7 d6+-) 16.Ra8+- Ba8 17.Qa8 Bc7 (17...Bf6+-) 18.Qe4 f5 19.Qh4 Bd8 20.Qg3 d6 (20...Bf6 21.d4 d6+-) 21.Qg7 1–0. DEFFM – GuestLGFV, freechess.org, 2018.

6.a4 b6 7.Be2 Bb7 8.d4 Nd5 (8...a6 9.0-0=) 9.0-0 (9.c4 Nf6=) 9...Bf6 (9...a6 10.c4 Nf6 11.bc6 Bc6 12.Nc3=) 10.Qd2 (10.c4 Nb4+=) 10...Ne7 (10...Be7 11.c4 Nf6 12.Nc3+=) 11.e4 (11.Nc3 Ng6+=) 11...Ng6 12.e5 (12.c4 cb5 13.e5 Be7 14.ab5 a5+=) 12...Be7= 13.c4 h6 (13...a6 14.Nc3=) 14.Qe3+= c5 (14...a6 15.Ba3+=) 15.a5 (15.Rd1 f6+=) 15...cd4 (15...a6 16.ab6 Qb6 17.Na3+=) 16.Bd4+/– d6 (16...ba5 17.Ba7 Bb4 18.Bb6+/–) 17.ab6 (17.ed6 Bd6 18.a6 Bf3 19.Bf3 Nd7 20.Ba8 Qa8+-) 17...ab6 (17...de5 18.Ne5 Ne5 19.Ra7 (19.Qe5?! Bf6 20.Qc7 Qc7 21.bc7 Bd4 22.cb8Q Rfb8+=; 19.Be5?! Qb6 20.Bd4 Qc7+/–) 19...Nc4 20.Bc4+-) 18.Bb6 Qd7 (18...Qc8 19.Ra8 Ba8 20.ed6 Bd6 21.Rd1+-) 19.Ra8 Ba8 20.ed6 Qd6 (20...Bd6 21.Rd1 Bf4 22.Qa3+-) 21.c5 Qd5 (21...Qf4 22.c6+-) 22.Nc3 (22.c6 Bf6+-) 22...Qb3 (22...Qf5 23.Bd3 Qf6 24.Ne4 Be4 25.Be4+- (25.Qe4?! Nd7+/–)) 23.Nd4 (23.c6 Rc8+-) 23...Qa3 24.Ne6! fe6 25.Qe6 Kh7 26.Bd3 Bf6 (26...Rf6 27.Qe7 Rb6 28.Qc7 Qc3 29.Qb6 Qd3 30.Qb8 Bg2 31.Kg2 Nh4 32.Kg1–+) 27.Qd6 Qc3 28.Bg6 Kg6 (28...Kg8 29.Bh7! Kh7 30.Qf8+-) 29.Qf8 Qe5 30.Qc8 (30.Ba7 Qd5 31.f3 Bd4 32.Kh1 Nd7 33.Qe8 Kh7+-) 30...Qd5 (30...Kh7 31.Bc7 Qd5 32.Qh3+-) 31.c6 Bc6 32.bc6 Nc6 33.Qg4 Kh7 34.Rd1 Qb3 (34...Qe5 35.Be3+-) 35.Qe4 Kh8 36.Ra1?? (better is 36.Rb1 Qc3 37.Be3+-) 36...Ne5 (better is 36...Ba1 37.g4 Qb6–+) 37.Ra8+- (37.Ra8 Qg8 38.f4+-) 1–0. DEFFM – GuestSSQN, freechess.org, 2018.

6.a4 Qb6 7.c4 Bc5 (7...d5!?=) 8.Be2 a5 (8...Be7 9.0-0+=) 9.0-0 (9.Bf6 gf6 10.0-0 Bb4+-) 9...d6 (9...Qd8 10.d4 Bb4 11.Bc3+=) 10.d4 (10.Bf6 gf6 11.Nc3 Bb4+-) 10...Bb4+= 11.Nbd2 (11.Nc3 Nbd7+=) 11...c5 (11...Nbd7 12.e4+=) 12.Qc2 (12.dc5 dc5 13.Bf6 gf6+-) 12...Nbd7 13.Bd3 g6 (13...cd4 14.Bd4 Qc7 15.Rfd1=) 14.Rad1 cd4 15.ed4 Qd8 16.Qb3 Nb6 17.Ba3 Ba3 18.Qa3 Nbd7? (better 18...Qe7!?+-) 19.Qd6+- b6 20.Be4 Bb7?? (better 20...Ne4 21.Ne4 Bb7+-) 21.Bb7 (21.Bb7 Ra7 22.Bc6+-) 1–0. guest588 – guest578, chessclub.com, 2018.

6.a4 d5 7.c4 c5 8.Be2 b6 9.0-0 Nbd7 10.d4 Bb7 11.Nbd2 Qc7 12.Qb3 a6 13.Rfc1 ab5 14.ab5 Ra1 15.Ba1 Ne4 (15...Rc8 16.Qd1=) 16.Ne4 de4 17.Ne5 Ne5 18.de5 Rd8 19.Bb2 (19.Rd1 Rd1 20.Qd1 Kh8=) 19...Qd7 (19...Rd2 20.Re1+=) 20.Bc3 Ra8 21.Rd1 Qc7 22.Bb2 g6 23.Bc3 h5 (23...Bf8 24.Qc2+=) 24.g3 (24.Rd2 h4+-) 24...Rd8 (24...Bf8 25.Bf1=) 25.Rd8 Qd8 26.Qc2 Kf8 ½–½. GuestFVNY – GuestPlayer, freechess.org, 2018.

6.a4 d5 7.Bd3 Nbd7+= 8.0-0 Nh5 (better is 8...Qc7!?+=) 9.bc6+/– bc6 (9...Nc5 10.cb7 Bb7 11.Be2+/–) 10.Nd4 Nhf6? (better is 10...Qb6 11.Ba3 Ba3 12.Bh7 Kh8+/–) 11.Nc6+- Qe8 12.Ne7 Qe7 13.Ba3 Nc5 (13...Qd8 14.Bf8 Qf8 15.Nc3+-) 14.Be2 Qc7 15.d4 Ncd7 (15...Nce4 16.Bf8 Kf8 17.f3+-) 16.Bf8 Nf8 17.Na3 Bd7 18.c4 Ne4 (18...Qa5 19.Nb5+-) 19.Qc2 White intends c5 (19.Bd3 Nc3 20.Qf3 a6+-) 19...Qd8 (19...Qa5 20.Nb1+-) 20.Bd3 f5 (20...Nf6 21.c5+-) 21.Be4 (21.f3 Nf6+-) 21...fe4 22.Rfb1 Rc8 (22...Ng6 23.Rb2+-) 23.c5 Ng6 (23...e5 24.Nb5 ed4 25.ed4+-) 24.Nb5 Qg5 (24...a5 25.Nd6 Rc6 26.Nb7+-) 25.Na7 Rf8 26.Kh1 Nh4 (26...e5 27.c6 Nh4 28.Rg1+-) 27.Rg1 e5 28.c6 Bg4 (28...Bc8 29.de5 Qe5 30.c7+-) 29.c7 Ng2 (29...ed4 30.ed4 Bc8+-) 30.Rg2 (30.Kg2?? Be2 31.Kh3 Qh5 32.Kg2 Qf3) 30...Bf3 31.Rag1 ed4 (31...Bg2 32.Rg2 Qf5 33.c8Q Rc8 34.Qc8 Qc8 35.Nc8 ed4 36.ed4+-) 32.c8Q de3 (32...Rc8 33.Qc8 Kf7 34.Qd7 Qe7 35.Qd5 Qe6 36.Qd4 Qf6+-) 33.Qe6 Kh8 34.Qcc8! (34.Qcc8 Bg2 35.Rg2 Qf4 36.Qe7 Qh2 37.Kh2 Rc8 38.Qg7) 1–0. DEFFM – GuestVTWB, freechess.org, 2018.

6.a4 d5 7.d4 a6 8.Bd3 (8.Nbd2 Bd7=+) 8...c5 (8...ab5!? 9.ab5 Ra1 10.Ba1 cb5=+) 9.c4 (9.dc5 Ne4=) 9...cd4 10.Bd4 (worse 10.Nd4 e5 11.Nb3 dc4 12.Bc4 Bb4 13.Bc3 ab5 14.Qd8 Rd8 15.Bb5 Na6=+) 10...ab5 11.ab5 Ra1 12.Ba1 dc4 (12...Nbd7 13.0-0=) 13.Bc4= Qd1 14.Kd1 Rd8 (14...b6 15.Nbd2=) 15.Ke2 Nbd7 16.Nbd2 (16.Bd4 b6=) 16...Bc5 (16...Nb6 17.Bd3=) 17.Rd1 (17.Bb2 Nb6=) 17...b6 (17...Nb6 18.Ne5=) 18.Nb3+= Bb7 (18...Bf8 19.Nbd4 Nc5 20.Rc1+=) 19.Bf6 (19.Nc5!? bc5 20.Ne5+-) 19...gf6+= 20.Nc5 bc5 21.Ne1 (21.Bd3 f5+=) 21...Kf8 22.Ra1 Bg2?? (better 22...Nb6 23.Rc1 Ke7=) 23.Ng2+- 1–0. Anonymous – Anonymous, lichess.org, 2020.

6.a4 d5 7.Be2 Nbd7=.

6.a4 d6 7.Be2=.

6.a4 Ne4 7.c4 (7.Be2 Bf6 8.Bf6 Qf6=) 7...Bf6 (7...d5 8.Nc3+=) 8.d4 (8.Bf6 Qf6 9.d4 a6=) 8...d5 (8...c5 9.Bd3 d5 10.Qc2+=) 9.Bd3 Nd6 (9...a6 10.Ba3 c5 11.ba6 Qa5 12.Nfd2 cd4 13.Bf8 de3 14.Be4 de4 15.Bg7 Bg7 16.ab7 Bb7 17.Ra2 ed2 18.Qd2–/+) 10.c5 Nc4 11.Bc4 dc4 12.Nbd2 (12.Qe2 b6+=) 12...cb5 (12...Qa5!? 13.Qc2 cb5 14.ab5 Qb5 15.Nc4 Nd7+=) 13.ab5+/– a6 (13...Bd7 14.b6+/–) 14.Nc4+- a5 (14...Nd7!?+-) 15.0-0 (15.Bc3 Qe8+-) 15...Bd7 (15...Nd7 16.Bc3 a4 17.Bb4+- (17.Ra4?! Ra4 18.Qa4 Nc5+-)) 16.Qb3 (16.Qa4 Bc8+-) 16...Be8 (16...Qc7 17.Bc3 a4 18.Ra4 Ra4 19.Qa4+-) 17.Bc3 a4 18.Ra4 Ra4 19.Qa4 Be7 20.Ba5 Qd5 (20...Qd7 21.Rb1+-) 21.Bc7 Nd7 22.Bd6 Bd6 23.Nd6 (23.cd6?! f6+-) 23...b6 (23...Nf6 24.Qc2 Bd7 25.Ne5+-) 24.e4 Nc5 25.dc5 (25.ed5?! Na4 26.de6 fe6+-) 25...Qc5 26.Qd4 Qd4 27.Nd4 Bd7 28.Ra1 f5 (28...f6 29.Nc6 g5 30.Ra7+-) 29.e5 g6 (29...h6 30.Ra6 Rb8 31.Ra7+-) 30.Ra7 (30.Ra7 Bb5 31.N6b5+-) 1–0. Gretencord,Ulrich – Pieleck,Rudi, remoteschach.de, 2003.

6.c4 cb5 7.cb5 b6 8.a4 Bb7 9.Be2 d5 10.0-0 Nbd7 11.d4 Ne4 12.Nc3 Nc3 13.Bc3 Nf6 14.Qb3 Ne4 15.Bb4 Bb4 16.Qb4 Rc8 17.Rfc1 Rb8 18.Ne5 a5 19.ba6 Bc8 20.Nc6 Qc7 21.Nb8 Qb8 22.Bb5 Qa7 23.Rc2 Ba6 24.Rac1 Bb5 25.Qb5 g6 26.g3 Nd6 27.Qb4 Rb8 28.Rc7 Nb7 29.R1c6 Qa5 30.Rb6 Qb4 31.Rb4 1–0. Abdullaevich (1665) – knownforit (1680), lichess.org, 2018.

6.Be2 cb5 7.Bb5 a6 8.Be2 b5 9.a4 ba4 10.Ra4 d5 11.0-0 Nbd7 12.d3 Qb6 13.Bd4 Qc6 14.Ra1 Bc5 (14...Bd6 15.Bb2=+) 15.Nbd2 Bd4 16.Nd4 Qc3 17.N2f3 e5 18.Nb3 Bb7 19.Na5 Bc6 20.Qd2 Qd2 21.Nd2 Rfc8 22.c4 Nc5 23.Rfc1 dc4 24.Nc6 (24.Ndc4 Bd5 25.Nb6+-) 24...Rc6+= 25.Rc4 (25.Nc4? Nb3-+; worse 25.dc4 Rd6 26.Nf3 e4=+) 25...Rac8 26.h3 Ne6 (26...R6c7 27.d4 ed4 28.ed4+=) 27.Bf3 Rc4 28.Nc4 (28.dc4?! Nc5=) 28...e4 29.Be2 (better 29.Nd6!? Rd8 30.Ne4 Ne4 31.Be4+/-) 29...ed3= 30.Bd3 Nc5 31.Bf1 Kf8 32.Ra5 Nfd7 33.Be2 Ke7 34.Nd2 The isolani on a6 becomes a target 34...Rb8 35.Nf3 (worse 35.Ba6 Ra8 36.Rc5 Nc5-/+) 35...Rb1 36.Kh2 Rb2 37.Nd4 Rb6 38.Bf3 g6 39.g4 Kd6 40.Kg3 Ne5 41.Bg2 Nc4 42.Ra1 a5 43.Bf1 Nd2 44.Be2 a4 45.Nb5 Kc6 46.Nc3 Exerts pressure on the isolated pawn 46...Rb4 47.Ra2 Nde4 48.Ne4 Ne4 (worse 48...Re4 49.Bf3+/-) 49.Kf3 Nc3 (better 49...h6=+) 50.Rc2+/- Rb3 51.Bd3?? (better 51.Bc4 Ra3 52.g5+/-) 51…Kc5-/+ 0-1. bjoernsen (2310) - surovi (2335), Rated blitz game, lichess.org, 2021.

6.Be2 cb5 7.Bb5 d5=.

7.ab5 a6 8.c4 a5 9.Be2 (9.Bf6 Bf6 10.d4 d5+=) 9...d5 10.0-0 (10.cd5 Nd5 11.0-0 Nd7=) 10...dc4 11.Qc2 (11.Bc4 Nd5=) 11...Bb4 (11...Nbd7 12.Na3=) 12.Bc4 (12.Rc1 Nbd7+=) 12...Nbd7 (12...b6 13.Ng5 Nbd7 14.Be6 fe6 15.Ne6+=) 13.d4 b6 14.Ne5 (14.Rc1 Bb7=) 14...Ne5 (14...Qc7 15.Rc1=) 15.de5 Nd7 (15...Nd5 16.Rd1 Qg5 17.Bd3+=) 16.Bd3 (16.Qe4 Ra7=) 16...Bb7 (16...Qh4!?=) 17.Bh7+= Kh8 18.Be4 (18.Bd3 Nc5 19.Bc4 Qh4+=) 18...Be4 (18...Rc8!? 19.Bc6 Nb8=) 19.Qe4+/– Nc5 20.Qc4 (20.Qf3 Qd3+/–) 20...g6 (20...Qd3!? 21.Qd3 Nd3+=) 21.Na3+/– Kg7 (21...Rc8 22.Qg4+/–) 22.Rfd1+- Qg5 (22...Qc8 23.Bd4+-) 23.Nc2 Rh8 (23...Qf5 24.Nb4 ab4 25.Qb4+-) 24.Nb4 ab4 25.Ra8 Ra8 26.Qb4 Rd8 (26...Ra4 27.Qe1+-) 27.Rd6 (better is 27.Rd8 Qd8 28.Bd4 Qc7+-) 27...Rd6?! (27...Qf5 28.Qe1 Rd6 29.ed6 f6+-) 28.ed6 Kh7 (28...Kf8 29.Qd4 e5 30.Qe5 Qe5 31.Be5+-) 29.Qc3 (29.Qd4 e5 30.Qe5 Qe5 31.Be5 Nd7+-) 29...f6 30.Qf6 Qf6 31.Bf6 Nd7 32.Bb2 Kh6 (32...e5 33.f4 e4 34.g4+-) 33.f4 g5 (33...Kh5 34.Kf2+-) 34.Kf2 (34.g4 Kg6+-) 34...gf4 (34...Kh5 35.fg5 Kg5 36.Kf3+-) 35.ef4 1–0. DEFFM – GuestQPBN, freechess.org, 2018.

7.ab5 a6 8.c4 d5 9.d4=.

7.ab5 a6 8.c4 d5 9.Be2 dc4 10.Bc4 Bd7 11.0-0 Qc7 (11...Nd5 12.Qc2=) 12.Qb3 a5 (12...Rc8 13.d3+=) 13.Rc1+= Qb6 14.Bd4 Bc5 15.Bc5 Qc5 16.d4 Qf5 (16...Qh5 17.Nc3+-) 17.Bd3 Qg4 (17...Qd5 18.Qa4+-) 18.Ne5 (18.Rc7 Qh5+-) 18...Qg5 (18...Qh5 19.Nd2+-) 19.Nd2 Nd5 20.Ndf3 (20.Be4 a4 21.Ra4 Ra4+-) 20...Qd8 21.Be4 f6? (better 21...Be8+-) 22.Bd5+- fe5 23.Be6 Be6 (23...Kh8 24.Ne5 a4 25.Qd5 Be6 26.Qe6+-) 24.Qe6 Kh8 25.Ne5 (25.Qe5?! Nd7 26.Qc7 b6+-; 25.de5?! a4+-) 25...Re8 (25...Qf6 26.Rc8 Nd7 (26...Qe6?? 27.Rf8 Qg8 28.Nf7) 27.Qf6 Nf6 (27...gf6?? 28.Ra8 Ra8 29.Nd7+-) 28.Rf8 Rf8 29.Ra5 Nd5+-) 26.Nf7 Kg8 1–0. GuestWXHD – GuestWKTF, freechess.org, 2019.

7.ab5 b6 8.c4 Bb7 9.Bd3 d5 10.0-0 dc4 11.Bc4 Nbd7 12.d4 Re8 13.Nbd2 Nf8 14.Qb3 Ng6 15.Be6?? (better 15.Rfe1+-) 15...fe6–+ 16.Qe6 Kh8 17.Ng5 Rf8 (17...Qd5 18.Nf7 Kg8 19.Nh6 Kf8 20.Qd5 Nd5–+) 18.e4 (18.Ba3!?–/+) 18...Qe8–+ 19.Ba3 (19.Qc4 Nf4 20.Qc7 Qb5 21.Qf4 Ne4 22.Qc7 Nd2 23.Qe7–+) 19...Ba3 (better 19...Ne4!? 20.Nde4 Be4 21.Ne4 Ba3 22.Qe8 Rfe8–+) 20.Ra3–/+ Qe6 (20...Nf4!? 21.Qe8 Ne8–/+) 21.Ne6=+ Rf7 (21...Rfc8 22.d5–/+) 22.d5= Ne5 (22...Rd7 23.f3=) 23.f4 Ned7 (23...Ng6 24.Rfa1 Bc8 25.f5+=) 24.Rfa1 Nc5 25.Nc5 bc5 26.Ra7 Ra7 27.Ra7 h6?? (better 27...Bd5 28.Ra3 Ne4 (28...Be4? 29.Ne4 Rf8 30.b6+-) 29.Ne4 Be4=) 28.d6+- Ne8?? (28...Kg8 29.b6 c4+-) 29.e5 Bd5 (29...Nd6 30.ed6 Kg8+-) 30.Rf7 Bf7 31.d7 1–0. DEFFM – asadhaT, freechess.org, 2019.

7.ab5 b6 8.c4 d5 9.Be2 (9.Bf6 Bf6 10.d4 dc4 11.Bc4 a5=) 9...dc4 (9...Bb7 10.0-0=) 10.0-0 (10.Bc4 Bb7=) 10...Qc7 (10...Bb7 11.Bc4 a5 12.d3=) 11.Be5 Bd6 (11...Qc5 12.Na3=) 12.Bf6 (12.Bd6 Qd6 13.Na3 Qc5+=) 12...gf6 13.Ra4 Bb7 (13...a6 14.Nc3=) 14.Rc4+= Qe7 15.Nd4 Nd7 (15...a6 16.Bf3+=) 16.f4 Rfc8 17.Rc8 Rc8 18.Bf3 Nc5 19.f5 (19.Nc6 Bc6 20.bc6 Na6+=) 19...e5 (19...Bf3 20.Qf3 Qf8 21.Nc6+/–) 20.Nc6 Bc6 21.Bc6 (worse is 21.bc6 e4 22.Be2 a6–/+) 21...e4 (21...a6 22.Nc3 ab5 23.Bd5+=) 22.Qg4 (22.Nc3 Kh8+=) 22...Kh8+= 23.Nc3 Pawn e4, live or die! 23...Qe5 (23...Be5!?+=) 24.g3 (24.Qh4+-) 24...Rd8 (24...a5!?+/–) 25.Ne4+- Ne4 26.Qe4 (26.Be4?! Qb5 27.Rb1 Qd7+/–) 26...Re8 (26...Bf8 27.Rd1+-) 27.Qc4 (27.Qe5 Re5 (27...fe5?? 28.Be8 Kg7 29.f6 Kg6 30.Bc6+-) 28.Ra1 Bb4 29.Ra7 Bd2+-) 27...Re7 28.Kg2 (better is 28.Qh4+-) 28...h5 (28...Rc7+-) 29.Qh4 Qb2 30.Qh5 Kg7 31.Qg4 Kf8 32.Qh5 Re3?? (32...Kg7 33.Rf2 Rc7+-) 33.Qh8 Ke7 34.Qe8 1–0. DEFFM – lemiiiii, freechess.org, 2018.

7.ab5 Qb6 8.d4 a6 9.c4 Bb4 10.Nbd2 d6 11.Be2 Ra7 12.0-0 Bd7 13.Qb3 a5 14.Bc3 Bc3 15.Qc3 a4 16.Qb4 d5 17.c5 Qa5+/– 18.Qa5 Ra5 19.b6 Nc6 20.Rfb1 a3 21.Bb5 Na7?? 22.Bd7+- Nd7 23.Rb3 Nb5+= 24.Rd3 Rfa8 25.Ne5 Nb8 26.Nb3 Ra4 27.f3 a2 28.Rd2 Ra3 29.Nd3? Rb3–+ (29...Rb3 30.Raa2 Ra2 31.Ra2 Na3–+ (31...Rd3?! 32.Ra8 h6 33.c6 bc6 34.Rb8 Kh7 35.b7=)) 0–1. tanto – pvhameren (1620), net–chess.com, 2001.

7.ab5 d5 8.Be2 Bd7 9.0-0+= a6 10.Bd4 a5 11.c4 b6 12.Nc3+- dc4 13.Ne5 Nd5 14.Bc4 Nc3 15.Bc3 Bf6 16.Qg4 Be5 17.Be5 f6 18.Bd6 Re8 19.d4 Kh8 20.Bd3 e5 21.Qe4 f5 22.Qa8 ed4 23.Qa7 Be6 24.Bc7 Qd7 25.Bb8 Qa7 26.Ba7 Rf8 27.ed4 f4 28.Bb6 f3 29.Rfe1 Bg4 30.Bc5 Rc8 31.b6 fg2 32.b7 Rb8 33.Ra5 g6 34.Ra8 Ra8 35.ba8Q Kg7 36.Qf8# 1–0. marre – terl, internet, 2009.

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0).

6.c4 c6 7.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4).

6.c4 c6 7.a4 Nbd7 8.Nc3 a6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Nc3 Nbd7).

6.Bd3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Bd3).

6.Be2 Nbd7 7.0-0 c5 8.c4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 Nbd7 8.0-0).

6.c4 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 10.Be2 d5 11.Nc3 Nbd7 12.0-0 Nb6 13.cd5 ed5 14.bc6 bc6 15.Qc2 Qd7 (15...c5 16.Nb5+=) 16.Ne5 (16.Rb1 Nc4 17.Bc4 dc4+=) 16...Qe6= 17.f4 (17.d4 Nfd7+=) 17...c5 18.Nb5 c4?? (better is 18...Bb7=) 19.f5+- (19.f5 Qd7 20.Nd7 Nbd7 21.Rb1+-) 1–0. DEFFM – GuestVCSH, freechess.org, 2018.

6.c4 b6 7.Nc3 Bb7 8.Be2 a6 9.a4 c5 10.0-0 a5 11.d4 d5 12.dc5 Bc5 13.cd5 Nd5 14.Nd5 Qd5 15.Qc2 Rc8 16.Rfd1 Qh5 17.Ne5 Qg5 18.Bf3 Bf3 19.Nf3 Qg4 20.h3 Qh5 21.Rac1 f6?? (better 21...Ra7+=) 22.Qe4+- Ra7 (22...Na6 23.Qe6 Qf7 24.Qf7 Kf7 25.ba6 Rc7+-) 23.Qe6 (23.Qe6 Rf7 24.Qc8 Rf8 25.Rd8+-) 1-0. bjoernsen (2350) - tim_uu (2315), Rated blitz game, lichess.org, 2023.

6.c4 c6 7.a4 a6 8.Be2 Nbd7 (8...ab5 9.cb5 c5 10.Nc3=) 9.0-0 (9.Nc3 Nc5+=) 9...d5 (9...ab5 10.cb5 c5 11.Nc3=) 10.Nc3+= dc4 (10...ab5 11.ab5 Ra1 12.Qa1+=) 11.bc6 (11.Bc4 Nb6 12.Be2 ab5 13.ab5 Ra1 14.Qa1 Bd7+=) 11...bc6 12.Bc4 Bb7 13.Rb1 (13.Qe2 c5+=) 13...Rb8 14.Qe2 Kh8 (14...Qa5!?=) 15.Ba6+/– Ba6 16.Qa6 Nc5 (16...Qc7 17.d4+/–) 17.Qc4 (17.Qc6? Rb6 18.Qb6 Qb6–+) 17...Nd3 18.Ba1 Rb1 (18...Nb4 19.d3!+/–) 19.Rb1+- (19.Nb1?! Qd5 20.Qa6 Nb4+/–) 19...Nd5 1–0. DEFFM – GuestQKVC, freechess.org, 2018.

6.c4 Nbd7 7.Nc3 b6 8.d4 Bb7 9.Be2 c5 10.0-0 d5 11.Rc1 Rc8 12.Qb3 dc4 13.Bc4 (13.Qc4!? cd4 14.Qd4=) 13...Bf3=+ 14.gf3 cd4 15.ed4 Qc7 (15...Bd6 16.Ne4 Bb8 17.Rfd1=+) 16.Ne4 (16.Be6 Qf4 17.Ne4 Ne4 18.fe4 fe6 19.Qe6 Qf7 20.Qd7 Qg6 21.Kh1 Qe4 22.f3 Rf3 23.Rc8 Rf8 24.Kg1 Qg6 25.Kh1 Qe4 26.Kg1 Qg6 27.Kh1 Qe4=) 16...Qf4 (16...Qb7 17.Be6 fe6 18.Qe6 Rf7 19.Rc8 Qc8 20.Ng5+=) 17.Qe3 (better 17.Be6!? Ne4 18.fe4 (18.Bd7 Bd6 19.Qf7 Kf7 20.Be6 Kg6 21.Bf5 Rf5 22.Rfe1 Qh2 23.Kf1 Qf2) 18...fe6 19.Qe6 Qf7 20.Qd7 Qg6 21.Kh1 Qe4 22.f3 Rf3 23.Rc8 Rf8 24.Kg1 Qg6 25.Kh1 Qe4 26.Kg1 Qg6 27.Kh1 Qe4=) 17...Qh4=+ 18.Kh1 Bd6?? (better 18...Nd5 19.Bd5 ed5 20.Rc8 Rc8-/+) 19.Nd6+- Rcd8 20.Ne4 (20.Rg1 Qh5+-) 20...Ne4 (20...Nd5 21.Qg5 Qg5 22.Ng5+-) 21.fe4 (worse 21.Qe4 Qh6+-) 21...Nf6 22.f3 Nh5 23.Rg1 Qh3 (23...Qf6 24.Ba3+-) 24.Bf1 Qh4 25.Rg4 Qf6 26.Be2 Rc8 27.Rc6 (27.e5!? Qd8 28.Qh6 Rc1 29.Bc1 Qc7+-) 27...Rc6 28.bc6 Rc8 29.Bb5 a6 (29...Kh8 30.Kg1+-) 30.Ba6 Rc6 (30...Rc7 31.Bb7+-) 31.Bd3 (better 31.d5 Qb2 32.dc6 f5+-) 31...h6 (31...Qe7+-) 32.Qd2 (better 32.e5 Qe7 33.Qe4+-) 32...Qf3= 33.Rg2 Nf4 34.Bb5?? (better 34.Bb1 e5 35.Qf2 Qg2 36.Qg2 Ng2 37.Kg2=) 34...Rc8 (better 34...Ng2!? 35.Qg2 Qg2 36.Kg2 Rc2 37.Kf3 Rb2 38.a4-+) 35.d5 ed5 36.ed5 Ng2 37.Qg2 Qg2 38.Kg2 Rc2 39.Kf3 Rb2 40.Bc6 (40.a4 Rh2 41.Ke4 Rd2-+) 40...Ra2 41.Ke4 (41.h3 Ra3 42.Kg4 g6-+) 41...Rd2 (41...Rh2 42.Ke5-+) 42.Bb5 (42.h3 Kf8-+) 42...Kf8 43.Bd3 Rh2 0-1. bjoernsen (2405) - krengkreng09 (2420), Rated blitz game, lichess.org, 2022.

6.c4 Nbd7 7.d4 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.Nbd2 Qa5 12.Be2 Ne4 13.0-0 Nc3 14.Qe1 (14.Bc3!? Qc3 15.Qb1+=) 14...Ne2= 15.Qe2 f5 (15...cb5 16.cb5 Nf6 17.Rb1=) 16.Qd3 Nf6 17.Bc3 Qb6 18.Ra1 (18.Rb1 Qc7+=) 18...Bd7 (18...cb5 19.Qb1=) 19.h3 (better is 19.bc6!? bc6 20.Ra5=) 19...cb5–/+ 20.Qb1 (20.Ne5 Bc8 21.c5 dc5 22.dc5 Qc5–/+) 20...Qc7 21.Ba5? (better is 21.Ra7!?–/+) 21...b6–+ 22.Bc3 bc4 23.Qb4 b5 24.Ne5? (24.Qb2 Nd5 25.Ba5 Qc6–+) 24...Be8 (better is 24...Nd5 25.Nd7 Nb4 26.Nf8–+) 25.Nef3 d5 (25...Nd5 26.Qa3–+) 26.Qb1 (26.Qb2 Qd6 27.Rb1 f4–+) 26...Qd6 27.Ra7 b4 28.Ba1 b3 (28...Ne4 29.Qc2–+) 29.Ne5 (29.Bb2 Qd8–+) 29...Bd8 (29...Ne4 30.Ndf3–+) 30.Bb2 Bb6 (better is 30...Qb6 31.Qa1 Bb5–+) 31.Ra8 (31.Ra8 Qc7 32.Qc1–+). GuestZGQP – GuestRRZP, freechess.org, 2017.

6.c4 Nbd7 7.d4 b6 8.Be2 Bb7 9.0-0 d5 10.Nbd2 dc4 11.Bc4 Bd6 (11...a6 12.a4=) 12.a4 (12.Qc2 c6=) 12...Ne4 (12...c5 13.Qe2=) 13.Ne4+= Be4 14.Rc1 (14.Bd3 Bd3 15.Qd3 a6+=) 14...Nf6 (14...a6 15.ba6 Qf6 16.Nd2+=) 15.Ne5 Bb7 (15...Bd5 16.Bd3+/–) 16.Qe2+/– Nd5 (16...a6 17.ba6 Be4 18.Bb5+/–) 17.Qg4 (17.e4 Nb4+=) 17...f5 (17...a6 18.Qh3+=) 18.Qg3 (18.Qe2 Qh4+=) 18...Rf6 (18...a6 19.f4+=) 19.Rfd1 (19.Qf3 Rh6+=) 19...Rg6 (19...f4 20.Qh3 fe3 21.fe3+=) 20.Qf3 Qg5? (better is 20...Rh6!?+=) 21.Ng6+- hg6 (21...Qg6 22.Rd2+-) 22.g3 (22.h3 Qh5+-) 22...Kf7 (22...Qh5 23.Qh5 gh5 24.f3+-) 23.e4 Nf6 24.Be6! Ke6 (24...Ke8 25.d5 fe4 26.Qe2+-) 25.ef5 Qf5 (25...gf5 26.Qb7 Rh8 27.Rc7 Bc7 28.Qc7+-) 26.Qb7 Rf8 27.Re1 (27.Qa7?! Ne4 28.f4 Bf4 29.d5 Kd7+-) 27...Kf7 28.Rc7 (28.Qa7!? Kg8 29.Qb7 Nd5+-) 28...Bc7 29.Qc7 Kg8 30.f4 (30.Qa7 Ng4 31.Qg7 Kg7 32.d5 Kg8–+) 30...Nd5 31.Qe5 (31.Qa7?! Nf4 32.gf4 Qg4 33.Kh1 Qf3 34.Kg1 Qg4 35.Kh1 Qf3 36.Kg1 Qg4=) 31...Qe5 (31...Rd8 32.Qe6 Kh8 33.Re4+-) 32.fe5 (32.de5 Rc8+-) 32...Rc8 (32...Rf3 33.Kg2 Rb3 34.Bc1+-) 33.e6 Kf8 34.Re5 Nb4 (34...Rd8+-) 35.Ba3 Rc4 (35...Ke8 36.Bb4 Rc4 37.Ba3 Rd4 38.Re3 Ra4 39.Rf3 Ra3 40.Ra3+-) 36.d5 Ke8 (36...Ke7 37.Re2 Ke8 38.d6+-) 37.Bb4 (better is 37.d6 Rd4 38.Bb4+-) 37...Rb4 38.d6 Rd4 39.d7 Ke7 40.Kf2 Rd2 41.Re2 (41.Kf3 g5+-) 41...Rd6 (41...Rd3 42.Re4+-) 42.Kf3 Rd7 (42...g5+-) 43.ed7 Kd7 44.Kf4 Kd6 45.Kg5 Kc5 (45...Kd7 46.Kg6 Kd6 47.Kg7+-) 46.Re7 Kb4 47.Ra7 (47.Ra7 Kc5 48.Rg7+-) 1–0. DEFFM – GuestXMYX, freechess.org, 2018.

6.c4 Nbd7 7.d4 b6 8.Be2 d5 9.0-0 dc4 10.Nbd2 Bb7 11.Nc4 Nd5 12.a4 Re8 (12...a6 13.Qb3=) 13.Qb1 Nf8 (13...a6 14.Bd3 f5 15.Nfe5+=) 14.a5 Ng6 (14...a6!? 15.ab6 cb6+=) 15.a6+/– Bc8 16.Rd1 Bd7 17.Nce5 Ne5 18.de5 Qc8 (18...Rc8 19.Bd3 h6 20.Nd4+/–) 19.Bd3 Rb8 (19...h6!?+/–) 20.Bh7+- Kh8 21.Be4 (21.Bd3 c6+-) 21...Bb5 22.Bd5 ed5 23.e6 (23.Rd5?! Bc4 24.Rd4 b5= (24...Ba6 25.e6 Bf6 26.ef7+-)) 23...Qe6 24.Nd4 Qd7 25.Nb5 f6 (25...c6 26.Nd4+-) 26.Nc3 c6 27.Qg6 Bd6 28.Ra4 Re5 (28...b5 29.Rh4 Kg8 30.Ne2+-) 29.Rg4 (29.Rh4 Kg8+-) 29...Kg8 30.Ne2 Rg5 (30...Qf7 31.Be5 Qg6 32.Rg6 Be5 33.f4+-) 31.Rg5 fg5 32.Nd4 Rf8 (32...Rc8 33.Nf5 Bh2 34.Kh2+-) 33.Ne6 Rf7 34.Bg7 Rg7 35.Ng7 Qg7 (35...Bh2 36.Kh2 Qc7 37.Kg1 Qg7 38.Qc6+-) 36.Qd6 (36.Qd6 Qf8 37.Qc6+-) 1–0. DEFFM – GuestRBRR, freechess.org, 2018.

6.c4 Nbd7 7.d4 e5 8.Nbd2=.

6.c4 Nbd7 7.d4 Ne8 8.Bd3 g6 9.0-0 Rb8 10.a4 Ng7 11.Nbd2 Nb6 12.a5 Nd7 13.Qb3 Nf6 (13...Nf5 14.h3+-) 14.e4 Nd7 15.Bc2 a6 (15...c6 16.Qe3+-) 16.Qe3 White prepares the advance e5 (16.g3 e5+-) 16...Bf6 (16...ab5 17.cb5 c6 18.b6+-) 17.e5 de5 (better 17...Be7!?+-) 18.de5+- Be7 19.Ne4 b6 (19...Nf5 20.Qc3+-) 20.ab6 (better 20.g4 Bb7 21.Rfd1 Qc8 22.Nf6 Bf6 23.ef6 Ne8 24.Rd7 Qd7+-) 20...Nb6?? (20...Nf5 21.Qf4 ab5+-) 21.Nf6 Bf6 22.ef6 Nh5 23.Qh6 Nc4 (23...Nd7 24.Ng5 Nhf6+-) 24.Ng5 Nf6 (24...Re8 25.Qh7 Kf8 26.Qf7) 25.Bf6 (25.Bf6 Qf6 26.Qh7) 1–0. GuestGNVN – GuestGYST, freechess.org, 2020.

6.c4 e5 7.Nc3 a6 8.a4 Bg4 9.Be2 Nbd7 10.h3 Be6 11.d4 Nb6 (11...ab5!? 12.ab5 Ra1 13.Qa1 ed4 14.Nd4 Nb6 15.Ne6 fe6=) 12.de5+= Ne8 (12...de5 13.ba6 ba6 14.Qd8 Rfd8 15.Ne5+=) 13.ed6 Nd6? Will c4 fall? (better is 13...Bd6 14.c5 Bc5 15.Qd8 Rd8 16.ba6 ba6 17.Ba6 Nd6+/–) 14.c5+- Ndc4 15.Qd8 Rfd8 16.cb6 Nb2 17.bc7 Rdc8 18.b6 Bb4 19.Kd2 Ba5 (19...Bd7 20.Rhb1 Bc3 21.Kc3 Na4 22.Kd2+-) 20.Rhb1 Nc4 21.Bc4 Bc4 22.Ne5 Bd5 23.Kd3 Bg2 24.Nc4 Bc3 25.Kc3 Bh3 26.Nd6 Rf8 (26...h5 27.Nb7 Rc7 28.bc7+-) 27.Nb7 Rae8 28.Nc5 Re6 (28...Bc8 29.b7 Bb7 30.Rb7 Kh8+-) 29.Ne6 Be6 30.b7 1–0. Jamieson,Ian M – Morrow,Joseph, SCCA Premier, 2008.

6.d4 Nbd7 7.Bd3 Nb6 8.0-0 Na4 (8...a6 9.ba6 ba6 10.e4=) 9.Ba3 d5 10.Bc1 Bd7 11.c3 Nb6 12.Ne5 Bd6 (12...c5 13.bc6 Bc6 14.Ba3=) 13.a4+= Be5? (better 13...c6!?+=) 14.de5+- Ne4 15.Ba3 Nc4? (better 15...Re8 16.f3 Ng5+-) 16.Bc4 dc4 17.Bf8 Qf8 (17...Kf8 18.Qd4 f5+-) 18.Qd7 Rd8 (18...Nc5 19.Qc7 Rd8 20.Ra2+-) 19.Qc7 Nd2 (19...Nc5 20.Ra2 Rd7+-) 20.Nd2 Rd2 21.Qb7 Rd3 (21...a5+-) 22.Qa7 Rc3 23.b6 Rb3 24.b7 (better 24.Rab1 Rd3 25.Rfd1 h5 26.Rd3 cd3+-) 24...c3 25.Rab1 Rb1 26.Rb1 c2 The mate threat is cxb1Q 27.Rc1 Qa3 (27...h5 28.b8Q Qb8 29.Qb8 Kh7 30.a5 Kh6 31.a6 Kg6 32.a7 Kg5 33.Qf8 Kg6 34.a8Q h4 35.Qe4 f5 36.Qe8 Kh7 37.Qh4) 28.b8Q (28.b8Q Qf8 29.Qf8 Kf8 30.Qb8 Ke7 31.Rc2 f6 32.Rc7) 1–0. GuestDTRL – GuestZMDC, freechess.org, 2020.

6.d4 Nbd7 7.Bd3 c6 8.a4 h6 (8...d5 9.c4=) 9.0-0+= d5 10.c4 Ne4 (10...c5 11.Nbd2+=) 11.Qc2 f5 12.Nc3 Ndf6 (12...Rb8 13.h3+- (13.Be4?! de4 14.Nd2 e5=; worse 13.Ne4 de4 14.Be4 fe4 15.Qe4 Nf6–/+)) 13.cd5 cd5 14.Ne5 Nc3 (14...Bd7 15.Ng6 Re8 16.f3 Nc3 17.Ne7 Re7 18.Bc3+-) 15.Qc3 Ne4 16.Be4 fe4 (16...de4 17.Ba3 Re8 18.Be7 Qe7 19.Qa3+-) 17.Ba3 Ba3 18.Qa3 Qh4?? (better 18...b6+-) 19.Qf8!!+- Kf8 20.Ng6 Kf7 21.Nh4 Bd7 (21...g5 22.Rac1 Bd7 23.Rc7+-) 22.f3 ef3 (22...Kg8 23.fe4 Be8 24.ed5+-) 23.Rf3 Kg8 (23...Ke7 24.Ng6 Kd6 25.Rf7+-) 24.Raf1 g5 (24...a6 25.Rf7 Rd8 26.Re7 ab5 27.Ng6+-) 25.Ng6 Kg7 (25...Be8 26.Ne7 Kg7+-) 26.Rf7 Kg6 (26...Kg8 27.Ne7 Kh8 28.R1f6 Bb5 29.Rh6) 27.g4 Rd8 (27...Bb5 28.R1f6) 28.R1f6 1–0. DEFFM – GuestBCND, freechess.org, 2019.

6.Be2 a6 7.a4=.

6.Be2 c6 7.a4 cb5 8.ab5 Nbd7 9.d4 b6 10.0-0 Bb7 11.Nbd2 Qc7 12.c4 Ne4 13.Ne4 Be4 14.Nd2 Nf6 (14...Bb7!?+=) 15.Ne4+- Ne4 16.Bd3 d5 17.cd5 ed5 18.f3 Nf6 19.e4 Bd6?? (better 19...Nh5+-) 20.e5 Be5 (20...Be7 21.Rc1 Qd8 22.ef6 Bf6 23.Rc6+-) 21.de5 Nd7 22.f4 Qc5 (22...Nc5 23.Be2+-) 23.Kh1 (better 23.Rf2 Qe7 24.Be2+-) 23...f6 (23...Rfd8+-) 24.e6 Nb8 (24...Qe7 25.ed7 Qd7+-) 25.Ba3 Qe3 1–0. GuestNBLH – GuestWWRR, freechess.org, 2019.

6.Be2 Nbd7 7.0-0 b6 8.c4 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.Be2 d6 8.0-0 Nbd7).

6.Be2 Nbd7 7.0-0 b6 8.Nd4 Bb7 9.f4 e5 10.Nf5 ef4 11.Qe1 fe3= 12.Qg3 g6 13.Qg5 Ne5?? 14.Ne7 Qe7 15.Qf6 Qf6 16.Rf6 ed2 17.Nd2 Nd7 18.Rf2+- Rae8 19.a4 Ne5 20.a5 Re7 21.Nc4 Nd7 22.Bd4 Re4 23.c3 Rfe8 24.ab6 ab6 25.Ra7 Rb8 26.Bf3 (26.Bf3 Re1 27.Rf1 Rf1 28.Kf1+-) 1–0. pcmvr (2800) – michelleke (2275), net–chess.com, 2007.

6.Be2 Nbd7 7.0-0 c6 8.a4 a5 (8...e5 9.c4=) 9.c4 c5 (9...cb5 10.ab5 b6 11.Nd4=) 10.d4 (10.Nc3 b6=) 10...b6 (10...cd4 11.Nd4 Qc7 12.Nd2=) 11.Nc3 (11.d5 Qc7+=) 11...Bb7 (11...cd4 12.ed4 Bb7 13.Nd2=) 12.Qd3 (12.d5 Ne5+=) 12...d5 (12...cd4 13.Qd4 Nc5 14.Qf4=) 13.Nd2 (13.cd5 Nd5 14.Nd5 Bd5+=) 13...e5 (13...cd4 14.Qd4 e5 15.Qd3+=) 14.Nd5 (14.de5 Ne5 15.Qf5 Bd6+=) 14...Nd5= 15.cd5 ed4 16.ed4 Bd5 17.Bf3 Bf3 18.Qf3 cd4 19.Bd4 (19.Nb3 Bd6+=) 19...Nf6 (19...Bf6 20.Bf6 Qf6 21.Qf6 Nf6 22.Nc4+=) 20.Nb3 Ra7 (20...Rc8 21.Rfd1 Qd6 22.Be3+/–) 21.Rfd1 (21.Qc6 Nd7+/–) 21...Qb8 (21...Rd7 22.Rd2+=) 22.Rac1 (22.Qc6 Rb7+/–) 22...Re8 (22...Rd7 23.Re1+=) 23.Rc6+/– Nd7 (23...Bd8 24.Rf1+/–) 24.g3 (24.Qg4 Bf8 25.Nd2+/–) 24...Bb4? (better is 24...Bf6+=) 25.Be3?? (better is 25.Bg7 Kg7 26.Rd7 Rd7 27.Qg4 Kf8 28.Qd7+-) 25...Ne5–/+ 26.Qg2 Nc6 27.bc6 Re3 28.fe3= Qe8 29.Qf3 Re7 30.Kf2 Re6 31.Ke2?? Rc6–+ 32.Nd4 Rd6 33.Qg4 Rg6 ½–½. Zoellner,Rainer (1840) – Steppan,Siegfried, Berlin, 2005.

6.Be2 Nbd7 7.d4 b6 8.c4 Bb7 9.0-0 Ne8 10.Nbd2 (10.Nc3 Nef6+=) 10...g6 (10...Nef6 11.Qc2+=) 11.Qb3 (11.Qc2 c5+=) 11...Ng7 (11...Nef6 12.h3+=) 12.a4 Rb8 (12...a5 13.h3+=) 13.a5+- Nf5 (13...c5 14.ab6 ab6 15.Ra7+-) 14.e4 Ng7 15.ab6 (15.Qe3 Bf6+-) 15...ab6 16.Rfd1 Bf6 17.e5 de5 18.de5 Nc5? (better 18...Be7!?+-) 19.ef6+- Nb3 20.Nb3 Qc8 21.fg7 Rd8 22.Bf6 (22.Re1 f5+-) 22...Rd1 23.Rd1 Be4?? (better 23...Bf3 24.Bf3 e5 25.Be5 Qe6 26.Bc7 Re8+-) 24.Ne5 c6 (24...h6+-) 25.Ng4 h5 26.Nh6 Kh7 27.g8Q Qg8 28.Ng8 Rg8 29.Rd7 cb5 30.Rf7 Kh6 31.Nd2 Bf5 32.h4 g5 33.hg5 Kg6 34.Rb7 b4 (34...Be4 35.Ne4 h4 36.Bd3 bc4 37.Bc2 Kh5 38.Nd6 Kg4 39.Rh7 Rh8 40.Bd1 Kf4 41.Rh8 c3 42.Rh4) 35.Nf3 Be4 (35...b3 36.Ne5) 36.Nh4 1–0. GuestPCMQ – GuestBCSW, freechess.org, 2020.

6.Be2 Nbd7 7.d4 Nb6 8.a4 Nbd5 (8...a6 9.0-0=) 9.0-0+= b6 10.Nbd2 Bb7 11.a5 ba5 12.Nb3 Ne4 (12...a4 13.Na5 Qc8 14.Ra4+=) 13.Na5+- Bc8 (13...Qc8 14.Qd3 Ndf6 15.Nb7 Qb7 16.Ra6+=) 14.Nc6 Qd7 15.Qd3 Ng5 (15...f5 16.c4 Ndf6 17.Nfe5 de5 18.de5+-) 16.c4+- Nb6 17.Nd2 d5? (better 17...f5+-) 18.f4 (18.Ne7 Qe7 19.Ba3 Nh3 20.gh3 Qg5 21.Bg4 Rd8+-) 18...dc4 (18...Ne4 19.Ne7 Qe7+-) 19.Nc4 Nc4 20.Qc4 Bb7 (20...Bf6 21.fg5 Bg5 22.Qd3+-) 21.Ne7 (worse 21.fg5 Bg5 22.Qc3 Qd5+-) 21...Qe7 22.Ba3 c5 (22...Qf6 23.Bf8 Rf8 24.Qc7 Bd5 25.fg5 Qg5+-) 23.bc6 Qc7 24.cb7 Qc4 (24...Qb7 25.Bf8 Nh3 26.gh3 Rf8 27.Bf3+-) 25.ba8Q (25.ba8N?! Qe2 26.Rae1 Qa6 27.Bf8 Ne4+-) 25...Qe2 (25...Ra8 26.Bc4 Ne4+-) 26.Qf8 1–0. GuestDYSK – GuestQJWX, freechess.org, 2019.

6.Be2 h6 7.0-0 e5 8.a4 b6 (8...Bf5 9.Nc3=) 9.d4+= ed4 (9...e4!? 10.Nfd2 a6+=) 10.Nd4+- Bb7 11.Bf3 Bf3 (11...Qc8 12.Nf5 Bd8 13.Bb7 Qb7 14.Qd4+-) 12.Qf3 (12.gf3?! Re8=; 12.Nf3?! Nbd7+=) 12...d5 (12...Nbd7 13.Nc6 Qe8 14.a5+-) 13.c4! Bc5 (13...dc4 14.Qa8 Pinning (14.Qa8 Deflection)) 14.Nf5 Qd7?? (better 14...Nbd7+-) 15.Bf6 gf6 (15...Qe6 16.Bg7 Rd8 17.cd5 Qg6+-) 16.Qg3 Kh7 17.Qg7 1–0. DEFFM – GuestWNZC, freechess.org, 2019.

5.c4 0-0 6.a4 d5 7.Nf3 c5 8.Be2 b6 9.0-0 Bb7 10.d4 Nbd7 11.Nbd2 Rc8 12.Rc1 Qc7 13.h3 Qb8 14.Qb3 (14.dc5 Nc5 (worse 14...Rc5 15.Ba3+-) 15.Be5 Qa8=) 14...Rfd8 15.Qa2 Qa8 (15...cd4 16.Nd4 Nc5 17.Rfd1=+) 16.Qa1 Nf8 (16...cd4 17.Bd4 Nc5 18.Rfd1=) 17.cd5 (17.dc5 bc5 18.Bc3+=) 17...Nd5 (better 17...ed5!? 18.dc5 bc5+=) 18.dc5+- Bc5 White creates threats along the open d–file 19.Nb3 (19.Bg7!? Nd7 20.Bh6+-) 19...f6+= 20.Nc5 bc5 21.Ba3 (21.Rfd1 Nd7+=) 21...Nb4 22.Rfd1 Bd5 23.Qb1 (23.e4 Be4 24.Rd8 Rd8 25.Rc5 Nd7 26.Bb4 ab4=) 23...Ba2 (23...Nd7 24.Nd2 Na2 25.Rc2=) 24.Qb2 Bd5 25.Ne1 (25.e4 Be4 26.Rd8 Rd8 27.Rc5 Nd3 28.Bd3 Rd3=) 25...Qb7 (25...Nd7 26.Bf3=+) 26.Bf3 (26.e4 Be4 27.Rd8 Rd8 28.Rc5 Nd5+=) 26...Bf3= 27.Rd8 Rd8 28.gf3 (28.Bb4!? Bg2 A) worse 29.Rc5 Bh3 (worse 29...ab4 30.Ng2 Qe4 31.Qc2+=) 30.Ba5 Rd1=+; B) 29.Ba5=) 28...Qd5=+ 29.Bb4 cb4 30.Qc2 Nd7 (better 30...Rd7!?=+) 31.Rd1+= Qb7?? (better 31...b3 32.Qc1 b2+=) 32.Qc6+- Qa7 33.Qe6 (33.b6!? Qb6 34.Qb6 Nb6 35.Rd8 Kf7+-) 33...Kf8 34.Rd6 Qb7 35.Kg2 Qc7 36.Nd3 (36.b6!? Qc8 37.Qd5 Ke7+-) 36...Nc5?? (better 36...Nb8 37.Rd8 Qd8+-) 37.Rd8 (37.Rd8 Qd8 38.Nc5+-) 1–0. BeepBeepImAJeep (2635) – pokai (2230), lichess.org, 2017.

5.Nf3 d5 6.c4 c6 7.cd5 cd5 8.Be2 0-0 9.0-0 Nbd7 10.d4 Nb6 11.Nbd2 Bd7 12.a4 Rc8 13.Qb3 Ne8 (13...Bb4 14.Rfc1=) 14.Rfc1 Nd6 15.Rc8 Qc8 16.Rc1 Qb8 17.Ba3 Rc8 18.Rc8 Qc8 19.Ne5 Kf8 (19...Be8!?+=) 20.Bc5 (20.Nd7?! Nd7 (worse is 20...Qd7 21.Qc3+/–) 21.Nf3 Kg8+=) 20...Qc7?? (better is 20...f6+/–) 21.Bb6+- Qc1 22.Qd1 (22.Nf1 Be8+-) 22...Qd1 23.Bd1 Bb5 (23...Be8 24.Ba5 f6 25.Nd3+-) 24.ab5 Nb5 25.Ba5 1–0. Fournier,Frederic (1780) – Gibson,John (1940), FRA Coupe, 2003.

5.Nf3 d5 6.c4 c6 7.Be2 0-0 8.0-0 Nbd7 9.cd5 cd5 10.a4 b6 11.Nc3 Bb7 12.d4 Rc8 13.Qb3 Bb4 14.Rfc1 Qe7 15.Rc2 Rc7 16.Rac1 Rfc8 17.Na2 Bd6 18.Rc7 Rc7 19.Rc7 Bc7 20.Ba3 Qd8 21.Nc3 Ne4 22.Bd3 Ndf6 23.h3 Nc3 24.Qc3 Ne4 25.Qc2 h6 26.Ne5 Be5 27.de5 Qc8 (better is 27...Qh4!?+/–) 28.Qc8+- Bc8 29.Be4 de4 30.Bd6 Bb7 31.Bc7 Bd5 32.Bb6 Bb3 33.Ba5 Ba4 34.Bb6 ½–½. Fournier,Frederic – Lowenthal (2035), Active (5/0), 2004.

5.g4 0-0=+ 6.g5 d5?? 7.gf6+- Bf6 8.Bf6 Qf6 9.Nc3 d4 10.ed4 Qd4 11.Nf3 Qf6 12.Rg1 Qe7 13.Ne4 f5 (13...e5 14.Bc4+-) 14.Ng3 (14.Nc3 e5+-) 14...h6 (14...e5+-) 15.Bc4 Nd7 16.d4 (16.Nh5 g5 17.Qe2 Nb6+-) 16...Nb6 17.Bb3?? (17.Bd3 Qb4 18.Kf1 Nd5+-) 17...Nd5?? (better 17...a4+=) 18.Nh5 g5 19.Ne5 Nf4 (19...a4 20.Bc4 Qb4 21.Qd2 Rd8+-) 20.Nf4 Qd6 (20...Qb4 21.Qd2 Kh7 22.Ne6 Be6 23.Be6 Qb5 24.Nd7+-) 21.Nfg6 (better 21.Qh5!? Rf6 22.Rg5 Kh7+-) 21...Rf6 22.Qh5 (better 22.Rg5 Qb4 23.Kf1 Qb5 24.Bc4+-) 22...Bd7 (22...Qd4 23.Rd1 Qe4 24.Kf1 Kg7 25.Rg5 f4+-) 23.Qh6 Be8 (23...Qb4 24.Kf1 Qb5 25.c4 Qc4 26.Bc4 Rg6 27.Qg6 Kh8 28.Nf7) 24.Rg5 (24.Qh8) 24...Bg6 (24...Qb4 25.Kf1 Bb5 26.Kg1 Qe1 27.Re1 Rg6 28.Rg6) 25.Rg6 Rg6 26.Qg6 Kf8 (26...Kh8 27.Nf7) 27.Qf7 1–0. FeegLood (2870) – vovaches (2360), lichess.org, 2015.

5.g4 0-0=+ 6.g5 Ne4 7.h4 d5 8.Nf3 c5 9.bc6 bc6 10.Rg1 c5 (10...Nd7 11.d3 Nec5 12.Nc3=+) 11.c4 Nc6 12.Bd3 (12.d3!? Nd6 13.cd5 ed5 14.Qc1=+) 12...Rb8–/+ 13.Qc1 Nb4 14.Be2 dc4 15.Bc4 Nd3 (15...Qd3! 16.Na3 Ba6–+) 16.Bd3=+ Qd3 17.Ne5 Qd5 18.d3 Nd6 19.f4 Rd8 20.Nc3 Qb7 21.Rb1 Qc7 22.Ba1 (better 22.h5=) 22...Nf5 (better 22...Ba6!?=+) 23.Rb8 Qb8 24.Ke2 (24.Nc6!? Qd6 25.Nd8 Qd8 26.e4 Nh4 27.Rg3+=) 24...Ba6 25.Qb2 (25.Ne4 Bd6 26.Nc4 Bc4 27.Qc4 Nh4=) 25...Qc8 (worse 25...Nh4 26.Qb8 Rb8 27.Nc6+=) 26.Ne4 c4 27.Nc4?? (better 27.dc4 Bc4 28.Kf2=+) 27...Bc4 (better 27...Rd3! 28.Nf6 Bf6 29.gf6 Bc4–+) 28.dc4 Qc4 29.Kf3 Qc6 (29...Rd3!? 30.Re1–+) 30.Rc1 Qd5 (30...Nh4?? 31.Kg4 Nf5 32.Rc6 Ne3 33.Kh3+-) 31.Qb3? (better 31.h5–/+) 31...Nh4–+ 32.Kg4 Qe4 33.Kh4 h6 (33...Bg5 34.Kg3 Bf4 35.Kf2–+) 34.Qc3 hg5 35.Kg4 (35.Kh3 f6 36.Kh2–+) 35...Bf6 (35...Qg2 36.Kh5 Qf3) 36.Qc6 Qf5 (36...Qf5 37.Kf3 Qh3 38.Ke2 Qh2 39.Kf1 Rd2 40.Qc8 Bd8 41.Qd8 Rd8–+) 0–1. FeegLood (2785) – Bombegranate (2845), lichess.org, 2017.

5.g4 0-0=+ 6.g5 Ne8 7.h4 d5 8.Bd3 Nd7 9.Nf3 Nc5 10.Be2 Bd6 11.a4 Qe7 12.c4 dc4 13.Bc4 e5 14.Nc3 (14.d4 ed4 15.Bd4 Bg4=+) 14...Be6–/+ 15.Nd5? (better 15.Be2–/+) 15...Bd5–+ 16.Bd5 Rd8?? (better 16...Nd3 17.Ke2 Nb2–+) 17.d4 ed4 (17...Na4 18.Qa4 Bb4 19.Ke2 Rd5 20.de5 Qe6=+) 18.Qd4? (18.Bd4 Na4 19.0-0 Nc5=+) 18...Kh8 (better 18...Nb3! 19.Qe4 Na1 20.Ba1 Bb4 21.Ke2 Qe4 22.Be4 Nd6–/+) 19.h5 f6 (19...Nb3! 20.Qe4 Na1 21.Ba1 b6=) 20.h6 g6 21.gf6 (21.Rd1 Bg3 22.fg3 c6 23.gf6 Nf6+-) 21...Nf6= 22.Ng5?? (better 22.Rd1=) 22...Rde8 (better 22...Be5! 23.Qe5 Nd3 24.Ke2 Ne5 25.Bb7 Nfg4–+) 23.Nf7+= Rf7 24.Bf7 Be5 25.Qc4? (better 25.Be8 Bd4 26.Bd4=+) 25...Bb2–+ 26.Rd1 (26.Be8 Ba1 (26...Ne8?! 27.Ra2 Be5 28.Rc2=+; 26...Qe8?! 27.Qc5 Ba1 28.Qc7=) 27.Qf7 Qf7 28.Bf7 Nfe4–+ (28...Na4?! 29.0-0 Be5 30.Rd1–/+)) 26...Rf8 27.Bd5 Nd5 28.Qd5 (28.Rd5 Ne4 29.Rh2 c6 30.bc6 bc6–+) 28...Bf6 (28...Na4 29.Qc4 Qf6 30.f4 Bc3 31.Ke2–+) 29.Ke2? (29.Qc4 c6–+) 29...Ne4 (29...Na4 30.Rd3 Nc3 31.Rc3 Bc3 32.Rd1–+) 30.Qc4 (30.Rd3 Nc3 31.Rc3 Bc3 32.Qb7 Qe6–+) 30...Nc3 (better 30...Nf2 31.Rhf1 Nd1 32.Rd1–+) 31.Kd3 (31.Ke1 Qa3 32.Rh3 Nd1 33.Kd1 Qb2–+) 31...Nd1 (better 31...Qa3 32.Kc2 Nd1 33.Qb3 Qb3 34.Kb3 Nf2 35.Rc1–+) 32.Rd1 Rd8 33.Kc2 Rd1 (better 33...Re8!? 34.Rd2–+) 34.Kd1 Qe5 35.Qf7 Qa1?? (better 35...Qd6 36.Ke2 Qd8–+) 36.Ke2+- Qb2 37.Kf3 Qa3 (37...Qf2 38.Kf2 Bh4 39.Kf3 c5 40.Qe8) 38.Qe8 Qf8 39.Qf8 1–0. FeegLood (2720) – bitboard (2160), lichess.org, 2015.

5.a4 0-0 6.Nf3+=.

5.a4 c6 6.f4 a5 (6...0-0 7.Nf3+=) 7.Nf3= d6 8.Be2 Bd7 9.0-0 0-0 10.Nc3 b6 11.d4 (11.Rb1 d5+=) 11...d5= 12.Ne5 Be8 13.f5 (13.Bd3 Bb4+=) 13...c5 14.fe6 fe6 15.Bf3 c4 (15...Qc7!?=) 16.e4+/– Kh8 (16...Ra7!?+/–) 17.ed5+- ed5 18.Nc4! Ra7 (18...dc4 19.Ba8 Pinning (19.Ba8 Deflection)) 19.Ne5 Rg8 20.Qd3 Nbd7?? (better is 20...Rf8+-) 21.Nc6 (21.Nd5?! Ne5 22.de5 Bg6+-; 21.Bd5?! Ne5 22.de5 Bg6+-) 21...Qb8 (21...Nc5 22.dc5 Bc6 23.bc6 Bc5 24.Kh1 Re7 25.Nd5 Nd5 26.Bd5 Rf8+-) 22.Nb8 Nb8 23.Nd5 Nd5 24.Bd5 Bg6 25.Qe2 Re8 (25...Rc8 26.Qe6 Rd7 27.c4+-) 26.Bf7 Bf7 27.Rf7 Kg8 28.Raf1 Rd7 29.Rg7! Kh8 (29...Kg7 30.Qg4 Mate attack) 30.Qe4 (30.Qh5 Kg7 31.Rf7 Kg8 32.Qh7) 30...Kg7 31.d5 (31.Qg4 Bg5 32.Qg5 Kh8 33.d5 Re5 34.Rf8) 31...Kg8 (31...Bf6 32.Bf6 Kf8 33.Be7 Kg8 34.Rf7 Kf7 35.Qh7) 32.Qe6 1–0. Taulien,Hans_Juergen (2350) – (deleted) (2040), remoteschach.de, 2003.

5.a4 d5 6.Nf3 0-0 7.Be2 Nbd7 8.0-0 ab5 9.ab5 Ra1 10.Ba1 c5 11.d3 Qc7 12.Nbd2 b6 13.c4 Bb7 14.h3 Ra8 15.Qb3 dc4 16.Nc4 Ne8 17.e4 Nd6 18.Nfd2 Nc4 19.Nc4 g6 20.Bb2 Qf4 21.g3 Qh6 22.Kg2 Qf8 23.Kh2 Bd8 24.f4 h5 25.Bf3 h4 26.g4 Bc7 27.e5 Bf3 28.Rf3 Ra7 29.Rf2 Qa8 30.f5 (30.d4!?=) 30...Qd5=+ 31.fg6 (better 31.Qc3!?=+) 31...Ne5-+ (31...fg6?! 32.Re2=+; 31...Be5 32.Ne5 Ne5 33.Qd5 Ng4 34.hg4 ed5 35.gf7 Rf7 36.Rf7 Kf7 37.Kh3+-) 32.gf7 Nf7 33.Kg1 Qg5?? (better 33...Ng5 34.Qc3 Nh3 35.Kf1 e5-+) 34.Qc3 e5 35.Nd2 Qe3 36.Qc4 Qg3 37.Kf1 (37.Kf1 Bd8 38.Ke2+-) 1-0. bjoernsen (2410) - Raja_kuat12 (2365), Rated blitz game, lichess.org, 2021.

5.c4 ab5 6.cb5 b6 7.Be2 Bb7 8.Bf3 (8.Nf3 0-0=) 8...d5=+ 9.Ne2 Qd7 (9...c5 10.0-0=+) 10.Nd4 (10.Qb3 0-0=) 10...Bc5 (10...e5 11.Nb3 e4 12.Be2=+) 11.a4 Bd4 (11...Bd6 12.Be2=+) 12.Bd4= c6 (12...Qe7 13.0-0=) 13.Bf6 gf6 14.bc6 Bc6 15.0-0 (15.Nc3 d4 16.ed4 Qd4+=) 15...Ra4= 16.Ra4 (16.Nc3 Rh4=) 16...Ba4=+ 17.Qc1 Bb5 18.Re1 0-0 (18...Nc6 19.d4=+) 19.Na3 (19.Qb2 Kg7=) 19...Bd3 (19...Ba6 20.Qb2=) 20.Qb2 (20.Qc3 Bg6=) 20...Qe7=+ 21.Qc3 Bg6 22.Nb5 Qc5 23.Qb2 Nd7 (23...Na6 24.Na7=+) 24.Rc1= Qe7 25.Rc7 Rd8 26.Na7 Qd6 27.Rc6 The isolani on b6 becomes a target (27.Nb5!? Qf8 28.Qc3=) 27...Qb8=+ 28.Qa1 Ne5 29.Rc3 (29.Be2 Qb7 30.Rc3 Ra8–/+) 29...Nf3 30.gf3 Qe5 (better 30...d4 31.Rc1 Qb7–/+) 31.f4? (better 31.Nc6 Qg5 32.Kf1–/+) 31...Qh5–+ 32.Rc8?? (32.Qf1 Qg4 33.Qg2 Qd1 34.Qf1 Qd2 35.Rc8 Rc8 36.Nc8–+) 32...Rc8 (32...Qg4 33.Kf1 Bd3 34.Ke1 Qe2) 33.Nc8 (33.f3 Rc2 34.Qd1–+) 33...Qg4 34.Kf1 Be4 (34...Bd3 35.Ke1 Qe2) 35.Ne7 Kf8 (35...Kg7 36.Nf5 ef5 37.Ke1 Bd3 38.Qf6 Kf6 39.h3 Qe2) 36.Qf6 (36.Qa8 Ke7 37.Qa3 Kd7 38.Qa7 Kc6 39.Qa4 b5 40.Qa6 Kc5 41.Qa7 Kc4 42.Qc7 Kb3 43.Qc3 Ka2 44.Ke1 Qg1 45.Ke2–+) 36...Bd3 (36...Qd1) 37.Ke1 Qe2 0–1. aravind555 – isar1, lichess.org, 2018.

5.Nf3 0-0 6.Nc3 ab5 7.Bb5 d5 8.0-0 Bd7 (8...c6 9.Be2+=) 9.Be2= Ba3 (9...Nc6 10.Nb5=) 10.Ba3 Ra3 11.Qb1 b6 12.Qb4 Ra8 13.Rab1 (13.Qf4 c5=) 13...Na6 (13...Ne4 14.Ne4 Nc6 15.Qc3 de4 16.Ne1=) 14.Qf4 Nc5 15.d3 Ra3 16.Qb4 Qa8 17.Rb2 Qa7 (17...Qa5 18.Qa5 Ra5 19.d4=) 18.Ne5 Ra8 Now all is on a2 (better is 18...Qa5!? 19.Qa5 Ra5=) 19.Nd7+/– (19.Nd7 Ncd7 20.Nb5+/–) 1–0. Mrkvicka,Josef – Tomasini,Marco, CiF, 1993.

5.Nf3 ab5 6.Bb5 Nc6 7.a4 Kf8 8.0-0 d6 9.Re1 Bd7 10.Bf1 e5 11.d3 h6 12.Nbd2 g5 13.c4 (13.d4 e4 14.d5 ef3 15.dc6 fg2 16.Bg2 Bc6 17.Bc6 bc6=) 13...Kg7 (13...g4 14.Nh4-/+) 14.Qc2 (14.d4 e4 15.d5 ef3 16.dc6 fg2 17.Bg2 Bc6 18.Bc6 bc6=) 14...Be6 (better 14...g4 15.Nh4 Nh7-/+) 15.d4+= ed4 16.Nd4 Nb4 17.Qb3 c5 18.Nb5 Qb6 19.Ne4 Bf5 (better 19...d5!? 20.Nf6 Bf6 21.Bf6 Kf6 22.cd5 Bd5 23.Qc3 Kg6+/-) 20.Nf6+- Bf6 21.Bf6 Kf6 22.Rad1 Rad8 23.e4 Be6 24.h4 (better 24.Nd6!? Kg7 25.e5 Qc6+-) 24...Kg6 25.Qg3 Nc2 26.Re2 Nd4 27.Red2 Rd7 (27...Nb5 28.ab5 Qc7 29.hg5 hg5 30.Rd6+-) 28.Nd4 cd4 29.Rd4 Rhd8 30.hg5 hg5 31.f4 Qc5 32.f5 Bf5 33.ef5 Kf6 34.Be2 d5 (34...Re7 35.Qf3 Ree8+-) 35.Kf1 (better 35.Qf2+-) 35...Rh8 36.Qc3?? (better 36.Kf2 dc4 37.Qe3 Rd4 38.Qd4 Qd4 39.Rd4+-) 36…Ke7 (36...Ke7 37.f6! Kf8+-). bjoernsen (2300) - Yoshka_Kroshka (2340), Rated blitz game, lichess.org, 2020.

5.Nf3 d6 6.d4 0-0 7.c4 ab5 8.cb5 c6 9.Bd3 h6 10.Nc3 Bd7 11.0-0 g5 12.a4 cb5 13.ab5 Ra1 14.Qa1 Ne8 15.d5 e5 16.Ne4 f5 17.Ne5 de5 18.Ng3 e4 19.Be2 Bf6 20.Nh5 Bb2 21.Qb2 Nf6 0–1. phildo (1810) – jimmiels (1765), gameknot.com, 2014.

7.Ba1 0-0 8.c4 d5 9.Nf3 Nbd7 10.Nc3 c6 11.Be2 dc4 12.Bc4 Nb6 13.Be2 c5 14.0-0 Nbd5 15.Qb3 b6 16.d3 Bb7 17.Rd1 Qc7 18.e4 Nf4 19.Bf1 Nd7 20.g3 Ng6 21.Nd2 Ra8 22.f4 Bf6 23.e5 (23.Nf3 Qd8=+) 23...Be7 (23...Nge5!? 24.fe5 Qe5-/+ (24...Be5?! 25.Bg2=; 24...Ne5?! 25.Nce4+=)) 24.Nc4 f6 (24...Bf3 25.Be2 Be2 26.Ne2=+) 25.ef6 (better 25.Nd6!? c4 26.Qc4 (26.Nc4? Ra1 27.d4 Nc5-+) 26...Qc4 A) 27.Nc4? Ra1 (27...fe5?! 28.Bh3 Kf7 29.f5 ef5 30.Bf5 Bc5 31.Kf1=) 28.d4 Rd1 29.Nd1 Bb4-+; B) 27.dc4=) 25...Bf6=+ 26.Bg2?? (better 26.Na4 Ba1 27.Ra1=+) 26...Bd4-+ 27.Kh1 Bg2 28.Kg2 Qb7 29.Kh3?? (29.Ne4 Ba1 30.f5-+) 29...Qf3 (29...Nf4 30.Kg4 Nf6 31.Kf4 g5 32.Kg5 Qg7 33.Kh4 Qg4) 30.Nb6 (30.Qb4 Nf4 31.Kh4 Qh5) 30...Nf4 31.Kh4 Qh5 0-1. bjoernsen (2345) - semnik (2405), Rated blitz game, lichess.org, 2020.

7.Ba1 0-0 8.Nf3 d5 9.c4 Nbd7 10.Be2 dc4 (10...Nb6 11.cd5 ed5 12.Bd4=) 11.Bc4= Nb6 12.Be2 Ng4 (12...Bd6 13.0-0=) 13.0-0+= Bd7 14.h3 Nf6 15.Bd4 Nfd5 (15...Bd6 16.Qb3+=) 16.Nc3 f6 17.Qb3 Qc8 18.Ra1 Rd8 19.Nd5 Nd5 20.e4 Nf4 21.Bc4 c5 22.Be3 Bd6 23.Rc1 Rf8 (23...Kh8 24.e5 fe5 25.Ng5+=) 24.d4 cd4 25.Nd4 (25.Bd4? Ne2 26.Be2 Qc1 27.Bf1 Bc5–+) 25...Kh8 26.Rc2 (26.Be6 Ne2 27.Ne2 Be6+-) 26...e5 (26...Qd8!?+-) 27.Bf4 Qb8 28.Be3 ed4 29.Bd4 Rc8 30.Qd3 b6 31.Be3 Rd8 32.Bd5 Bh2 33.Kf1 Qd6 (33...Be5 34.Ra2 Qc7 35.Ra6+-) 34.Rd2 Rc8 (34...g6+-) 35.Bc4 Qd3 36.Bd3 (36.Rd3?! Be8 37.f3 h5+-) 36...Bc7 37.Ra2 Kg8 38.Ra7 (38.Ke2 Kf7+-) 38...Kf8 39.Bb6! Bb6 40.Rd7 Rc7 41.Rd6 Bc5 42.Rc6 (42.Rd8!? Ke7 43.Rg8 g6+-) 42...Rc6+- 43.bc6 Ke7 (43...Bd6 44.e5 Be5 45.Bh7+-) 44.e5! fe5 (44...h6 45.ef6 gf6 46.Be4+-) 45.Bh7+- Kd6 46.Be4 Kc7 47.h4 Be7 48.h5 Bc5? (better 48...Kd6!?+-) 49.Ke2+- Kd6?? (49...Kd8+-) 50.g4 Kc7 51.g5 Bf8 52.Kd3 Kc8 53.Kc3 (53.Kc2 Kd8+-) 53...Kc7 54.Kd3 Kc8 55.Kc4 Kd8 (55...Kc7+-) 56.Kd5 Be7 57.h6 gh6 58.gh6 Kc7 59.Ke5 Bf8 (59...Bb4 60.h7 Bc3 61.Ke6 Kb6 62.f4 Kc5 63.c7 Bh8 64.c8Q Kb4 65.Qh8 Kb3 66.Qd4 Ka3 67.Qc4 Kb2 68.h8Q Ka3 69.Qhc3) 60.h7 Bg7 61.Ke6 Kd8 62.h8Q! Bh8 63.Kd6 Be5 (63...Ke8 64.Bg6 Kf8 65.c7 Kg7 66.Be4 Kh6 67.c8Q Bf6 68.Qf5 Kg7 69.Qg6 Kf8 70.Ke6 Be5 71.Qf7) 64.Ke5 Kc7 (64...Ke8 65.Bg2 Kd8 66.Kd6 Kc8 67.Bd5 Kd8 68.c7 Kc8 69.Be6 Kb7 70.c8Q Kb6 71.Qc5 Kb7 72.Qc7 Ka6 73.Bc4) 65.Bd5 Kb6 (65...Kd8 66.Kd6 Kc8 67.Be6 Kb8 68.c7 Kb7 69.c8Q Kb6 70.Qc5 Kb7 71.Qc7 Ka6 72.Bc4) 66.Kd6 Ka6 (66...Ka5 67.c7 Kb4 68.c8Q Kb5 69.Qc5 Ka4 70.Qb6 Ka3 71.Qb3) 67.c7 (67.c7 Kb5 68.c8Q Ka4 69.Qc4 Ka5 70.Bb7 Kb6 71.Qa6) 1–0. DEFFM (2335) – Vivar302 (2085), rated rapid game lichess.org, 2020.

7.Ba1 b6 8.Nf3 Bb7 9.Be2 0-0 10.0-0 d6 11.c4 Nbd7 12.Nc3 h6 13.Nd4 Ne5 14.d3 c5 15.bc6 Nc6 16.Ndb5 d5 17.cd5 Nd5 18.Bf3 Nc3 19.Nc3 Qd7 20.Qb1 Nb4 21.Bb7 Qb7 22.Ne4 Qd5 23.Rd1 Ra8 24.Bc3 Nc6 (24...Qa2 25.Bb4 Qb1 26.Rb1 Bb4 27.Kf1=) 25.Qb2 (25.Qb6 Ra4 26.Qb1 e5+/-) 25...Bf8 (25...Ra4!? 26.f3 f5=) 26.Qb6+/- Ne5 27.Be5 Qe5 28.g3 Ra1 29.Ra1 Qa1 30.Kg2 Qa8 31.f3 Qa2 32.Nf2 Qc2 33.d4 g6 34.Qb5 h5 35.Qd3 Qc1 36.e4 Qb2 37.h4 Bg7 38.e5 Bf8 39.f4 Bb4 40.Kf3 Be1 41.Ne4 Kg7 42.d5 ed5 43.Qd5 Qb1? (better 43...Qa3!? 44.Kg2 Qb2 45.Kh3 Qe2+/-) 44.e6 fe6 (44...Qb2 45.ef7 Bb4+-) 45.Qd4 Kh6 (45...e5 46.Qe5 Kf8 47.Qc5 Ke8 48.Qc8 Ke7 49.Qc7 Ke6 50.Qd6 Kf7 51.Qd7 Kf8 52.Qd8 Kf7 53.Ng5 Kg7 54.Qd7 Kg8 55.Qf7 Kh8 56.Qf8) 46.Qh8 1-0. bjoernsen (2305) - Deida (2330), Rated blitz game, lichess.org, 2019.

7.Ba1 b6 8.Nf3 Bb7 9.Be2 d6 10.0-0 Nbd7 11.c4 0-0 12.Qc2 e5 13.d3 Nc5 14.Nbd2 h6 15.d4 ed4 16.Nd4 Nfe4 17.Bf3 Nd2 18.Qd2 Bf3 19.Nf3 Bf6 20.Bd4 Qe7 21.Qc3 Ne4 22.Qb2 Ra8 23.h3 g6 24.Rd1 Kg7 25.Ne1 h5 26.Nd3 Ra4 27.Qb3 Ra8 28.Nf4 Bd4 29.Rd4 Nc5 (29...Ra1!? 30.Rd1 Qf6=) 30.Qb2+/- Qe5 (30...Kg8!?+/-) 31.Nd5+- Ne6?? (better 31...Kf8 32.Nc7 Ra7+-) 32.f4 Qf5 (32...Nf4 33.ef4 Qe1 34.Kh2 Kh6 35.Nc7 Rc8+-) 33.e4 (33.e4 Qd5 34.Rd5 f6 35.g3+-) 1-0. bjoernsen (2350) - abcdef126 (2320), Rated blitz game, lichess.org, 2023.

7.Ba1 c6 8.Nf3 Qa5 9.Bc3 Qa4 10.Bd3 cb5 11.Be5 Nc6 12.Nc3 Qg4 13.h3 Qg2 14.Rh2+- Ne5?? 15.Rg2 Nd3 16.cd3 0-0 17.Nb5 1–0. orane – GOODEVENING, caissa.com, 2006.

7.Ba1 c6 8.c4 Qa5 9.Nc3 0-0 10.Nf3 d5 11.cd5 ed5 12.Be2 Bg4 13.0-0 Nbd7 14.bc6 bc6 15.Bb2 Rb8 16.Qc2 Ne4 (better 16...c5!?=) 17.Ne4+/- de4 18.Qe4 Bf3 19.Bf3 Rb2 20.Qe7 Nf6 (better 20...Rd2!? 21.Qe8 Nf8 22.Bc6 Qg5+/-) 21.d4+- h6 22.Bc6 Qg5 23.Qd8 Kh7 24.Qc7 Ng4? (24...Qg6+-) 25.Qf7 Ne3 (25...Nf6+-) 26.Be4 Kh8 27.Qf8 (27.fe3?! Qe3 28.Kh1 Qe4=) 1-0. onur604 (2320) - lucasribeiro (2100), Casual Rapid game, 2021.

7.Ba1 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7).

5.c4 a5 6.Nf3 Bb7 7.Nc3 d6 8.Be2 Nbd7 9.d4 0-0 10.Rc1 Ne4 11.Na4 f5 12.0-0 Qe8 13.Qb3 Qg6 14.c5 (14.Rcd1!?=) 14...Nd2 15.Qd1 Nf1 (better 15...Bf3 16.Bf3 Nf1 17.Ba8 A) 17...dc5? 18.Bc6 (18.Qf1?! Ra8 19.dc5 bc5=) 18...Nb8 19.Qf1+-; B) 17...Ne3 18.fe3 Ra8 19.cb6 Nb6 20.Nb6 cb6=) 16.Kf1?? (better 16.c6 Nh2 17.Nh2+=) 16...dc5-+ 17.dc5 Nc5 18.Nc5 Bc5 19.g3 Rad8 20.Qb3 Bd5 21.Qa4 Bf3 22.Bf3 Rd2 (22...f4 23.gf4 Rd2 24.Qb3 Rf4 25.Bc3 Rf2 26.Kf2-+) 23.Be5? (23.Bc3 Rd3-+) 23...Qf7 (better 23...f4 24.Bf4 Qd3 25.Kg2 Rf4 26.Qf4 Be3-+ (26...Qb5?! 27.Qc7 Qa4 28.Rf1=+; 26...Ra2?! 27.Bg4 Qd5 28.e4=)) 24.Bc3 Rd7 25.Bc6 Rdd8 26.Kg2 Qe7 27.Qf4 Bd6 28.Qc4 Kh8 29.h4 e5 30.h5 h6 31.Rh1 e4 32.Kf1 Be5 33.Bd4 (33.Be5 Qe5 34.Kg2 Rd2-+) 33...Bd4 34.ed4 e3 35.d5 ef2 36.Kf2 Qe4 37.Qc3?? (37.Qe4 fe4 38.Ke3 Rf3 39.Ke4 Rg3 40.Rh4-+) 37...f4 (37...Qh1 38.Qf3 Qh2 39.Qg2 Qh5 40.Qf3 Qh2 41.Qg2 Qg2 42.Kg2-+) 38.g4 (38.Rh4 fg3 39.Kg3 Qe2-+) 38...f3 (38...Qh1 39.Qf3 Qh4 40.Ke2 Rfe8 41.Be8 Re8 42.Kd3 Qg3 43.Qg3 fg3-+) 39.d6 (39.Qd2 Qg4 40.Kf1-+) 39...Qe2 40.Kg3 Qg2 41.Kh4 Qh1 42.Kg3 Rd6 (42...Rd6 43.Qb2 Qg1 44.Kh3 f2 45.Qe2 f1Q 46.Qf1 Qf1 47.Bg2 Rd3 48.Kh2 Rf2 49.g5 Qg2; 42...Qg2 43.Kh4 Qh2) 0-1. bjoernsen (2415) - Dandel2i3Fernandez (2400), Rated blitz game, lichess.org, 2022.

5.c4 a6 6.a4 0-0 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 Bb7 10.Be2 c6 11.0-0 d5 12.d4 Nbd7 13.Nbd2 cb5 14.cb5 Qc7 15.Bb2 Rc8 16.h3 (16.Qb3 Qc2 17.Rc1 Qb3 18.Rc8 Bc8 19.Nb3 Bb7=) 16...Nf8 (16...Ne4 17.Bd3=) 17.Qa1 Bb4 18.Rc1 White gets deadly initiative 18...Qd7 (18...Qe7 19.Qa7=) 19.Ne5 Rc1 20.Qc1 Qc8 (20...Qe7 21.Qc2+=) 21.Qc8 Bc8 22.Ndf3 N8d7 23.Nc6 Bb7?? (better 23...Bd6+=) 24.Nb4+- (24.Nb4 h6 25.Nc6+-) 1–0. BeepBeepImAJeep (2735) – Hans_Schweinehirt (1835), lichess.org, 2016.

5.c4 Bb7 6.Nf3 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4).

5.c4 Bb7 6.Nf3 c5 7.Be2 d5 8.0-0 Nbd7 9.a4 0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4 Nbd7).

5.c4 Bb7 6.Nf3 d5 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Be7).

5.d4 c6 6.a4 cb5 (6...Bb7 7.Nf3=) 7.ab5 d5 (7...0-0 8.Bd3=) 8.Nf3 0-0 9.Bd3 h6 (9...Bb4 10.Nbd2+=) 10.0-0 (10.Qe2 Bb4 11.Nbd2 Ne4+=) 10...Ne4 (10...a6 11.Ba3+=) 11.Nbd2 (11.Qe2 Nd7+/–) 11...Nd6 (11...Bb7 12.Qe2+=) 12.c4 (12.Qe2 a5+/–) 12...dc4+= 13.Nc4 Bd7?? (better is 13...a6 14.Nd6 Bd6+/–) 14.Nd6+- Bd6 15.Be4 Bb5 16.Ba8 Bf1 17.Qf1 Nd7 (17...Qd7 18.Be4+-) 18.Ra7 Nf6 (18...Bb8 19.Ra1+-) 19.Bc6 Qc8 (19...Ng4 20.Rd7 Qb8 21.h3+-) 20.Qc4 Qb8 (20...Nd5 21.Ra8 Bb8 22.Ba3+- (worse is 22.Bd5 ed5 23.Qc8 Rc8+-)) 21.Rb7 Qc8 22.Rb6 Bc7 (22...Nd7 23.Rb7 Nc5 24.dc5 Qc6 25.Qd4+-) 23.Rb7 Qd8 (23...Bd6 24.Qb5+-) 24.e4 Ng4 (24...Qe7 25.e5 Nh7 26.d5 ed5 27.Bd5+-) 25.h3 Nf6 26.e5 Nd5 (26...Nh7 27.Ba3+-) 27.Bd5 ed5 28.Qc7 (worse is 28.Rc7 dc4 29.Rc4 Qd5+=) 1–0. DEFFM – GuestYQVV, freechess.org, 2018.

5.Be2 0-0 6.Bf3 d5 7.c4 (7.Ne2 c6+=) 7...Bb7 8.Be2 (8.d3 c6+=) 8...dc4–/+ 9.Nf3 c6 (9...Bd5 10.Qc2–/+) 10.a4 (10.Bc4 cb5 11.Bb5 a6+=) 10...a6 (10...cb5 11.ab5 Qc7 12.Ra4–/+) 11.Bc4+= ab5 (11...Bd6 12.0-0+=) 12.ab5 Ra1 13.Ba1 c5 (13...Ne4 14.bc6 Nc6 15.0-0+=) 14.0-0= Qc7 (14...Bd6 15.d3=) 15.Ne5 (15.Be5 Bd6 16.Bf6 gf6=) 15...Nbd7+= 16.f4 Bd6 (16...Ra8 17.Bc3+=) 17.Nc6 (better is 17.Nd7!? Nd7 18.Qg4=) 17...Bc6 (17...Ra8 18.Nc3–/+) 18.bc6+= Qc6 19.Be2 (19.Qb3+=) 19...Ne4 (better is 19...b5!?–/+) 20.Bf3= Ndf6?? (20...c4 21.Qc2 Ndc5 22.Qc4 Qd5+/–) 21.d3 (21.Bf6 gf6 22.d3 f5+-) 21...Rd8 1–0. GuestHYVZ – FutureFord, freechess.org, 2016.

5.Be2 a6 6.a4 c6 7.c4 cb5 8.ab5 a5 9.Nf3 Bb7 10.0-0 0-0 11.Nd4 d5 12.cd5 Nd5 13.f4 Nd7 14.Nc6 Bc6 15.bc6 Nc5 16.Rf3 Qc7 17.Bb5 Nb4 (17...Rfd8 18.Be5 Qc8 19.d4=) 18.Rh3+= Ne4?? (better 18...f6+=) 19.Qh5+- h6 (19...f6 20.Qh7 Kf7 21.Qe4+-) 20.Bg7 Bf6 (20...Bg5 21.Bh6 Rfc8 22.Bg5 f6 23.Qh8 Kf7 24.Qh7 Kf8 25.Qe4 Qf7+-) 21.Qh6 Bg7 (21...Ba1 22.Qh7) 22.Qh7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Qf3 c6 6.a4 Bb7 7.Bc4 (7.Nc3 a6=) 7...0-0 (7...Qc7 8.Nc3=+) 8.Ne2 d5 9.Bb3 c5 10.c4 Qd7 11.Qg3 g6 (11...dc4 12.Bc4 a6 13.0-0=+) 12.0-0 a6 13.d3 Qd8 (13...Rd8 14.Nd2=) 14.Nd2+= Nbd7 15.cd5 ed5 16.Be5?? (16.Rfc1!?+=) 16...Ne5 (better 16...Nh5 17.Qh3 Ne5–+) 17.Qe5=+ Bd6 18.Qg5 Nd7 19.Qh6 Be5 20.d4 Bg7 21.Qf4 c4 22.Bc2 ab5 (22...Qe7 23.ba6 Ra6 24.Rfb1=) 23.ab5 Qe7 (23...Re8 24.Ra8 Qa8 25.Qd6=) 24.Nc3 (24.Qc7 Rab8=) 24...Nf6 25.Nf3 (25.Na4 Ra5 26.Rab1 Qd8=) 25...Qb4 (25...Nh5 26.Qg4=+) 26.Ne2 (better 26.Na4!? Bc8 A) 27.Nb6? Ra1 28.Ra1 Qb2–+ (28...Qb5?! 29.Na4=); B) 27.Rfb1=) 26...Qb2–/+ 27.Ra8 Ra8 (27...Ba8 28.Rc1–/+) 28.Bd1?? (better 28.Qc7 Qc2 29.Qb7+-) 28...c3?? (better 28...Qb5 29.Bc2 Qd7–/+) 29.Qc7+- Rc8? (better 29...Bc8 30.Qd8 Bf8 31.Qf6 Be6+-) 30.Qb7 Rc4 (30...Re8 31.Qc6 (31.Qb6?! c2 32.Bc2 Qc2+-) 31...Re6 32.Qc7+-) 31.Ne5 Rb4 (31...c2 32.Qf7 Kh8 33.Nc4 cd1Q 34.Rd1 dc4 35.Qc4 Qa3+-) 32.Qf7 Kh8 33.Nd3 (33.Nf4 Rc4 34.Ne6 Rc7 35.Qc7 Qf2 36.Rf2 Bf8 37.Rf6 Be7 38.Qc8 Bf8 39.Rf8) 33...Qb1 (33...Qa3 34.Nef4 Ra4 35.Ba4+-) 34.Nb4 (34.Nef4!? Ng8 35.Bf3 Qf1 36.Kf1 Rb5+-) 34...Qb4 35.Nf4 Qb5 36.Ne6 Qd7 37.Qg7 (better 37.Qd7 Nd7 38.Bb3 Bf8 39.Nf8 Nf8+-) 37...Qg7 38.Ng7 Kg7 39.Bc2 Nd7 40.Ra1 Kf6 41.Ra7 Ke6 42.Ba4 Nf6 43.Rc7 Ne4 44.f3 (44.f3 Nd6 45.Bd7 Ke7 46.Bh3 Kf6 47.Rc3+-) 1–0. OrangAttackMan (1805) – retiponziani (1815), ChessWorld.net, 2011.

5.Qf3 c6 6.c4 d5+= 7.a4 0-0 8.Be2 Bb7 9.Qg3 Kh8 (9...Bd6 10.Qh4–/+) 10.f4 (10.Nf3 Bd6 11.Qh4 Nbd7=) 10...Rg8 (10...Nbd7!? 11.bc6 Bc6 12.cd5 Bd5+=) 11.Nf3= Ne4 12.Ne5 Qe8 13.Qh3 Nd7?? (better is 13...f6 14.Nf3 Nd7=) 14.bc6+- Ne5 15.cb7 Rb8 (15...Nc4 16.ba8R (worse is 16.ba8B Nb2 17.Bb7 Na4+-; 16.ba8N?! Nb2 17.Ra2 Bf6+/–) 16...Qa8 17.Bd4+-) 16.Be5 Rb7 17.0-0 (17.cd5 ed5 18.Ba6 Rb8+-) 17...f6 18.Bb2 Bb4 19.d3 Nc5 20.Bc3 (20.Bh5!? Qe7 21.cd5 ed5+-) 20...a5 21.Bb4 ab4 22.d4 Ne4 (22...Nb3 23.Ra2 Rc7 24.f5+-) 23.Bd3 f5 24.cd5 ed5 25.Qf5 Rd7 (25...Nf6 26.Rf3 Qc6 27.Nd2+-) 26.Bb5 Nd6 (26...Rf7 27.Qd5 Qe7+-) 27.Qd7 (27.Qd7 Qe3 28.Kh1+-; 27.Bd7? Qe3 28.Kh1 Nf5 29.Bf5 Qe2–+) 1–0. Dorozhkin,Oleg – Grachev,Vitaly, Anna RUS, Akulov Mem, 2012.

5.Nf3 0-0 6.c4 a6 7.Qc2=.

5.Nf3 0-0 6.c4 Bb7 7.Be2 d5 8.0-0 c5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

5.Nf3 0-0 6.c4 c5 7.a4 (7.d4 a6=) 7...Bb7 (7...d5 8.Be2=) 8.d3 (8.Be2 d5=) 8...Ne8 (8...d5 9.Be2+=) 9.Be2= f5 (9...a6 10.0-0=) 10.0-0+= Nf6 11.Ng5 Qc7 (11...a6 12.Bf3 Qc8 13.Bb7 Qb7 14.Qf3 Qf3 15.Nf3 ab5 16.ab5 Ra1 17.Ba1+=) 12.f4 (12.Bf3 a6=) 12...Qd8 (12...h6 13.Nf3+=) 13.Bf3+= Qc7 (13...Qc8 14.a5 ba5 15.Ra5+=) 14.Be5+/– d6?? (better is 14...Qc8+/–) 15.Ne6+- Qd7 16.Nf8 Bf8 (16...Kf8 17.Bb7 Qb7+-) 17.Bf6 gf6 18.Nd2 (18.Bb7 Qb7 19.Nc3 Nd7+-) 18...Qe7 (18...d5 19.cd5 Bd5 20.Nc4+-) 19.Bb7 Qb7 20.Rf3 (20.Qh5 Qc8+-) 20...Nd7 (20...a6 21.Rg3 Kh8 22.Qh5+-) 21.Rg3 Kh8 (21...Bg7 22.Qh5+-) 22.Qh5 Bg7 23.Qf5 Rg8 (23...Nf8 24.Ne4 Rd8 25.Rh3+- (worse is 25.Nf6 Qf7+-)) 24.Ne4 Qc7 (24...Nf8 25.Nd6 Qe7 26.Qd5+-) 25.Rh3 (25.Qd5 Rf8 26.Nd6 Nb8+-) 25...Nf8 (25...h6 26.Qd5 Rf8 27.Nd6+-) 26.Nf6 Bf6 27.Qf6 Qg7 28.Qg7 Rg7 29.Rf1 (29.a5 ba5 30.Ra5 Ng6+-) 29...Ng6 30.f5 (30.g4 Rf7+-) 30...Ne5 31.f6 (31.e4 Rf7+-) 31...Rf7 32.e4 Ng4 (32...Nd7 33.Rh5+-) 33.Rhf3 (better is 33.Rf4!? Ne5 34.g4 Kg8+-) 33...Ne5 34.Rg3 h6 (34...Nd7 35.Rg5+-) 35.Rf5 Kh7 36.h4 Ng6 (36...Nd7 37.Rg7! Rg7 38.fg7+-) 37.h5 (37.Rh3 Ne5+-) 37...Ne5 38.Kf2 Kh8 (38...Nd7 39.Ke3 Kh8 40.d4+-) 39.Ke3 Rd7 (39...Kh7 40.d4 Nd7 41.Rgf3+-) 40.Kf4 Nf7 41.Rg7 (better is 41.Rd5 Rd8+-) 41...a5 (41...Ne5 42.Rd7 Nd7 43.g4+-) 42.Ke3 (42.ba6 Ra7+-) 42...Ne5 (42...Rc7 43.Rf3 Rd7 44.Rfg3+-) 43.Rd7 (better is 43.Re5 Rg7 44.Re8 Kh7+-) 43...Nd7 44.d4 (better is 44.Rd5 Nf6 45.Rd6 Ng4 46.Kf3 Nh2 47.Kf4 Kg7+-) 44...cd4 (44...Kg8 45.Rd5 Nf6 46.Rd6 cd4 47.Kd4 Nh5 48.Rh6 Nf4+-) 45.Kd4 Nc5 46.Kd5 Kg8 47.g4 (47.Kd6 Ne4 48.Ke7 Nc3 49.f7 Kh7 50.f8Q Nd5 51.Kf7 Ne3 52.Qg7) 47...Kf7 48.e5 (better is 48.Kd6 Ne4 49.Kc6 Kf8+-) 48...de5 49.Ke5 Na4 (49...Nd3 50.Kd6+-) 50.g5 hg5 51.Rg5 Nc5 52.Rg7 Kf8 53.h6 a4 (53...Nd3 54.Kf5 Nf4 55.h7 Ng6 56.Kg6 a4 57.h8Q) 54.h7 a3 (54...Nd7 55.Rd7 Ke8 56.Re7 Kf8 57.h8Q) 55.h8Q 1–0. GuestNBHJ – GuestKJPP, freechess.org, 2016.

5.Nf3 0-0 6.c4 d5 7.d4 dc4 8.Nbd2 c3 (8...a6 9.a4=) 9.Bc3 c5 (9...a6 10.e4=) 10.bc6 (10.dc5 bc5 11.Qc2 Nd5=) 10...Nc6 11.Bd3 a5 (11...Bb7 12.Qb3=) 12.0-0 Nb4 13.Be2 (13.Bb4 Bb4 14.a3 Be7+=) 13...Nbd5 14.Bb2 Bb4 15.Qb3 (15.Rc1 Ba6=) 15...Ng4 (15...a4 16.Qc2=+) 16.a3= Bd2 17.Nd2 Qh4 18.h3 Ngf6 19.Nf3 Qh5 20.Rac1 Qg6 (20...a4 21.Qd1+=) 21.Ne5 Qh6 22.Kh2 Ne4 23.Qd3 (23.Qc2 f5+=) 23...Ba6 24.Qd1 (24.Qe4 Be2 25.Rfe1 f5+=) 24...Be2= 25.Qe2 f6 (25...Rac8 26.Qa6 Rcd8 27.Qd3=) 26.f3 (26.Nd7 Rfd8 27.Qb5 f5=) 26...fe5 (26...Ng3 27.Kg3 fe5 28.de5 Ne3 29.Rfe1 Qf4 30.Kf2=+) 27.fe4 Rf1 (27...Nf6 28.de5 Ne4 29.Bd4=) 28.Rf1+= (worse 28.Qf1 Ne3 29.Qe2 ed4 30.Bd4 Qf4 31.g3 Ng4 32.Qg4 Qd2 33.Bf2 Qc1 (33...Qf2?! 34.Kh1-/+) 34.Qe6 Kh8-+) 28...Nf6 29.Qc4 Nh5? (better 29...Re8 30.Qc6 Qg6+=) 30.Qc6+- Rf8 31.Rf8 (31.Qb6? Rf1 32.Qb5 Rf2-+) 31...Kf8 32.Qc8 Kf7 33.Qd7 Kf6?? (33...Kf8 34.d5 ed5 35.Be5+-) 34.d5 (34.de5 Kg5 35.Qe7 Nf6 36.ef6 gf6 37.e5 Kf5 38.ef6 Qh4 39.Qd6 Kg6 40.Qe6 Qa4 41.f7 Kg5 42.Qf6 Kh5 43.Qf5 Kh6 44.f8Q) 34...Qe3? (34...ed5 35.Qf5 Ke7 36.Qe5 Kd7 37.Qf5 Kd8 38.ed5+-) 35.Qe6 Kg5 36.Qe5 Kg6 (36...Kg6 37.Qe6 Nf6 38.Qf5 Kf7+-). ClayPigeons (2180) - rajabersiong (2165), Rated Bullet game, lichess.org, 2019.

5.Nf3 a6 6.ba6 (6.a4 0-0=) 6...0-0 (6...Ba6 7.Ba6 Na6 8.0-0=+) 7.Be2 Ba6 8.d3 Nc6 (8...Bb4 9.Nbd2=) 9.0-0 Ra7 (9...Bb7 10.e4=+) 10.c4= Qa8 (10...Bb7 11.Nc3=) 11.Nc3 d5 (11...Rc8 12.a4=) 12.Nb5 (12.cd5 Nd5 13.Nd5 ed5=) 12...Bb5 (12...Rb7 13.Qc2=) 13.cb5 Na5 14.a4 (14.Qd2 c6=) 14...c5 15.bc6 Nc6 16.Qb3 Rb8 (16...Nd7 17.Nd4=) 17.Rfc1 Nd7 18.Qc3 (18.d4 Rc8=) 18...Bf6 19.d4 (19.Qc6? Bb2 20.Qb5 Ba1 21.Ra1 Nc5-+) 19...Rc7 (19...Rc8 20.Qb3=) 20.Qa3 (20.Qb3 Be7=) 20...Rbc8 21.Bb5 Na5 (21...Be7 22.Qd3=) 22.Qd6+= Nb7? (better 22...Qb8 23.Rc7 Rc7+=) 23.Qc7+- Rc7 24.Rc7 Nf8 (24...Nb8 25.Rc8 Nd8+-) 25.Bc6 Qa5 26.Bb7 Qb4 (26...Bd8 27.Rc8 Be7 28.Ne5+-) 27.Ba3 (27.Ba3 Qa4 28.Rc8+-) 1-0. Machete99 (2190) - issa (1960), ICC, 2002.

5.Nf3 Bb7 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7).

5.Nf3 Bb7 6.c4 0-0 7.Be2 d5 (---> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 d5 7.Be2 0-0).

5.Nf3 Bb7 6.c4 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 b6 5.Nf3 Bb7 6.c4 Be7).

5.Nf3 c6 6.a4 0-0 7.c4 a6 8.Be2 ab5 9.ab5 Ra1 10.Ba1 c5 11.0-0 d5 12.d3 Re8 13.Nbd2 Nbd7 14.d4 Bd6 15.dc5 bc5 16.Qc2 Nb6 17.Ng5 g6 18.Bb2 Be7 0-1. spblex (2540) - zzvotra (2525), net-chess.com, 2010.

5.Nf3 d5 6.c4 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 0-0 10.Be2 dc4 11.Bc4 Bc5 12.0-0 Nbd7 13.d4 Be7 (13...Bd6 14.Nc3=) 14.Nbd2 Bb7 15.Qc2 Qa8 16.Bb2 Bf3 (16...Bd5 17.Ra1 Qb7 18.Bd5 Qd5 19.Qc6+/–) 17.Nf3 Qb7 (17...c6 18.Ra1 Qb7 19.Rc1+=) 18.Bd3+/– g6 (18...Ra8 19.e4+/–) 19.e4 Nb8 (19...Ra8 20.Rd1+/–) 20.Ne5 Bd6 (20...Nh5 21.Bc1+/–) 21.Nc6+- Nc6? (better is 21...Bf4+-) 22.bc6 (22.Qc6?! Qc6 23.bc6 Nh5+/–) 22...Qb8 23.e5 Nd5 (23...Be7 24.ef6 Bf6 25.Rd1+-) 24.ed6 cd6 25.Be4 Nb4 (25...Nc7 26.d5! Nd5 27.Bd5 ed5 28.Qd2+-) 26.Qc3 d5 27.Qb4 de4 28.d5! ed5 29.Qd4 f6 30.Qd5 Kg7 31.Rd1 Qc7 (31...Qe8+-) 32.Qe6 Rf7 (32...Qf4 33.Rd7 Kh6 34.Qe7+-) 33.Rd7 Qd7 34.cd7 Rd7 (34...h5 35.d8Q e3 36.Bf6 Kh6 37.Qe3 g5 38.Qg5 Kh7 39.Qh5) 35.Qd7 (35.Qd7 Kh6 36.Bf6 g5 37.Qg7 Kh5 38.Qg5) 1–0. DEFFM – GuestVYHW, freechess.org, 2018.

5.Nf3 d6 6.Nd4 (6.c4 a6=) 6...Bb7 7.Nc3 (7.Be2 c5 (< 7...Bg2 8.Rg1 Be4 9.Rg7+=) 8.bc6 Nc6=) 7...0-0=+ 8.Be2 Qd7 (8...a6 9.0-0=+) 9.Bf3 Bf3 (9...c6 10.0-0=+) 10.Qf3 d5 11.0-0 Qd6 (11...c5 12.Nde2=) 12.d3 Nbd7 (12...c5 13.Nde2=) 13.Nce2 (13.a4 Ne5 14.Qg3 Ng6+/–) 13...Ne5 14.Qg3 c5 15.Ne6 fe6 (15...Qe6 16.Qe5) 16.Be5 Qd7 17.a4 Rf7 (17...a6 18.ba6 Ra6 19.Rfb1+/–) 18.f4 (18.a5 Rd8+/–) 18...Raf8 19.Bc3 (19.Rf3 Bd6+/–) 19...d4 (19...Ne8 20.Rad1+/–) 20.ed4 cd4 (better is 20...Nd5!? 21.Bb2 Bd6 22.dc5 Bc5 23.d4 Bd6+/–) 21.Bd4+- Nd5 22.Qg4 Bf6 23.Bf6 Nf6 24.Qf3 Nd5 25.Qe4 Ne7 26.Nd4 Rf6 27.Rae1 Rg6 28.Ne6 Rc8 29.f5 Rf6 30.Ng7 Kg7 31.Qe7 Qe7 32.Re7 Kh6 33.c4 1–0. orane (1980) – robyn21, Caissa.com, 2004.

5.f4 Bb7 6.Nf3 0-0 (--> 5.f4 0-0 6.Nf3 Bb7).

5.f4 Bb7 6.Nf3 d6 7.Be2 0-0 8.0-0 Nbd7 9.Nd4 0–1. Kulbacki,James – Everett,Morgan, Monroe ch–MI op, 1986.

5.f4 Bb7 6.Nf3 d6 7.Be2 Nbd7 8.Nc3 0-0 9.0-0 c5 10.bc6 Bc6 11.Rb1 Nc5 12.Nd4 Bb7 13.Bf3 Nce4 14.Ne4 Ne4 15.d3 Nc5 16.Bb7 Nb7 17.Qg4 e5 18.Nc6 Qc7 19.fe5 Qc6 20.ed6 f6 21.de7 Rfe8?? 22.Rf6 Qc2 23.Rf8! Rf8 24.Qg7 1–0. ahaf – lonsy, internet, 2011.

5.f4 h6 6.Nc3 0-0 (6...a6 7.Nf3=) 7.Nf3 (7.Qf3 d5=) 7...a6 8.a4 a5 (8...d5 9.Be2=) 9.Rg1 (9.Be2 c5=) 9...d5 (9...Bb7 10.g4=) 10.g4 Ne4 (10...Nh7 11.Bd3+=) 11.g5+= hg5 (11...Nc3!? 12.Bc3 hg5 13.Ng5 e5+=) 12.Ne4+/- de4 13.Ng5 Bg5 14.Rg5 f6 15.Rh5 (15.Rg6 Rf7+-) 15...c5 (better 15...Nd7!?+/-) 16.Qg4+- White intends f5 16...Kf7 (16...Ra7 17.Bc4+-) 17.Bc4 Re8? (17...Qd6+-) 18.f5 Ra7 (18...Nc6+-) 19.Qg6 Ke7 20.fe6 Kf8 21.e7! Ree7 (21...Rae7 22.Rh8 Mate attack; 21...Qe7 22.Rh8 Mate attack; 21...Ree7 22.Rh8 Mate attack; 21...Ke7 22.Qf7 Mate attack) 22.Rh8 1-0. michaelbuss (2775) - nickyjoy (1720), ChessWorld.net, 2011.

7.Be2 d5 8.0-0 a6=.

7.Be2 d5 8.0-0 c5 9.d3 Nbd7 10.a4 a6 (better 10...Qc7=+) 11.Nbd2? (better 11.ba6 Ra6 12.Nc3=) 11...Ng4-+ 12.Qb1 (12.ba6 Ra6 13.Re1 Ne3-+) 12...Ne3 13.Rf2 f6 Black intends c4 (13...ab5 14.ab5 Ra1 15.Ba1-+) 14.d4 c4 15.c3 Qc7 16.Bc1 (16.Nf1 Nf5-+ (16...Qf4 17.Bc1+/-)) 16...Bd6 (16...ab5 17.ab5 Ra1 18.Qa1-+) 17.g3 ab5 18.ab5 Ra1 19.Qa1 Ra8 20.Qb1 Ra5 (20...Nf5 21.Bd1-+) 21.Nh4 Qb8 22.Ne4 (22.Bf3 Qa7 23.Bb2 Rb5 24.Re2-/+) 22...de4 23.Be3 Qa8 24.Rf1 Bd5 25.g4 (25.f5 e5 26.Ng2-+) 25...Ra2 26.Qe1 Qa4 27.g5 f5 (27...Qb5 28.Rf2-+) 28.g6 h6 29.Bh5 (29.Ng2 Nf6-+) 29...Qb5 (29...Nf6 30.Be2 Bb7 31.Ng2-+) 30.Ng2 (30.Rf2 Ra3 31.Rc2 Nf6-+) 30...Nf6 31.Bd1 (31.Be2 Qe8-+) 31...Bc6 32.Bf2 (32.Bd2 Nd5 33.Rf2 Qb1-+) 32…Nd5 0-1. Adams,Jonathan - Mold,Chris, NZL NZCCA Handicap, 1992.

7.Be2 d5 8.c4 c5 (8...a6 9.0-0=+) 9.cd5 Nd5 10.0-0 Nd7 (10...a6 11.Nc3=+) 11.Nc3= Nc3 12.dc3 Qc7 13.c4 Rad8 14.Qc2 h6 (14...Bf6 15.Ng5 Bg5 16.fg5+=) 15.Bd3 Bf6 16.Bf6 Nf6 17.Ne5 (17.Rad1 Ng4 18.Qe2 f5+=) 17...Nd7= 18.Nf3 f5 (18...e5 19.Bh7 Kh8 20.Be4=) 19.Rad1+= Nf6 20.Ne5 Nd7 21.Nf3 (21.Nd7 Rd7 22.Rf2 Rfd8=) ½–½. Waibel,Ulrich – Becker,Zeevi, compuserve, 1995.

7.Be2 h6 8.Nc3 c6 9.a4 d5 10.0-0 Nbd7 11.Nd4 (11.bc6!? Bc6 12.Nd4+=) 11...c5+= 12.Nc6 Bc6 13.bc6 Nb8 14.c7 Qc7 15.Qe1 a6 16.Bf3 Nc6 17.Qg3 Rad8 18.Ne2 Nb4 19.Be5 Qd7 20.Rab1 b5 21.ab5 ab5 22.Rb2 Ra8 23.d4 Nc6 24.dc5 Ne5 25.fe5 Ne8 26.c6 Qc6 27.Nd4 Exerts pressure on the isolated pawn 27...Qc3 28.Rb3 Qc4 (28...Qc7 29.Rb5 Ra3 30.Rb3 Rb3 31.cb3=) 29.Be2+= Qc7 30.Bb5 Bc5 31.Bd3 Rb8 32.Rbb1 Bd4 33.ed4 f5? (better is 33...Rb1 34.Rb1 Qa7+=) 34.Qg6+- Rb1? (better is 34...Rb6 35.Rb6 Qb6+-) 35.Qe6 (35.Rb1?! Qf7 36.Qf7 Rf7+= (36...Kf7?? 37.Rb7 Kg8 38.Re7+-)) 35...Kh8 (35...Qf7 36.Qf7 Rf7 37.Rb1+-) 36.Rb1 Qc3 (36...Qd8 37.Qg6 Qc8 38.Rf1+-) 37.Qd5 Nc7 (37...g6 38.h3+-) 38.Qd7 1–0. usingprogram (1985) – ibushi56, kurnik, 2011.

8.0-0 ab5 9.Bb5 Nc6=+.

8.c4 ab5 9.cb5 d6 10.0-0 Nbd7 11.a4 Re8 12.Nc3 Bf8 13.Nd4 g6 14.Bf3 Bf3 15.Qf3 Bg7 16.Nc6 Qc8 17.g4 Nc5 18.h4 Nd3 19.Ba3 Nc5 20.Bc1 Nd3 21.Ba3 e5 22.f5 e4 23.Qe2 Ne5 24.g5 Nf3 25.Rf3 ef3 26.Qf3 Nh5 27.f6 Bf8 28.Nd5 Kh8 29.Bb2 Re5?? 30.Ne5+- de5 31.Be5 Qd8 32.Nc7 Rc8 33.d4 Rc7 34.Bc7 Qc7 35.Qa8 Qg3 36.Kf1 Kg8 37.Qe4 Qh3 38.Ke2?? Ng3–+ (38...Ng3 39.Kd3 Ne4–+) 0–1. elsh1403 – zbysio3 (1645), kurnik, 2011.

9.ab5 Ra1 10.Ba1 d6 11.0-0 Nbd7 12.c4 (12.Bd4 c6=) 12...Qa8 (12...d5 13.Nc3=) 13.Nc3 e5 (13...c6 14.d3=) 14.fe5+= de5 15.Qc2 Bd6 16.Bb2 (16.d4 ed4 17.ed4 c6+=) 16...Qe8 (16...e4 17.Nd4=) 17.Ng5 (17.Qf5 c6+=) 17...e4= 18.Nd5 (18.Rf5 Nc5=) 18...Bd5 (better is 18...Nd5!? 19.cd5 Bd5–/+) 19.cd5= h6 (19...Be5 20.Ba3 Bd6 21.Ra1=) 20.Bf6+= Nf6 21.Rf6 gf6 (21...hg5 22.Rf5+=) 22.Ne4 Qe5 23.Nd6 Qd6 24.Qc4 Ra8 25.g3 (25.Qg4 Kh8=) 25...Qc5 (25...Ra1 26.Kg2=) 26.Qg4 (26.Qc5 Ra1 27.Kf2 bc5+=) 26...Kf8 27.Qh4 (27.Qd7 Qc1 28.Kf2 Re8=) 27...Ra1 (27...Qc1 28.Bf1 Ke8 29.Qh6=) 28.Kf2 Qd5 29.Qh6 Kg8 (29...Ke8 30.Qf6 Rh1 31.Qh8 Kd7 32.Qh3 Kd8 33.Qh4 Ke8 34.d3+=) 30.Qf4 (30.d4 Qf5 31.Qf4 Qf4 32.gf4 f5+=) 30...Rc1 (30...Qd2 31.Qf6 Qe1 32.Kf3 Qf1 33.Bf1 Rf1 34.Ke2 Rf6–+) 31.e4 (31.d4 Rh1 32.Qg4 Qg5+=) 31...Qg5 (31...Qd4 32.Qe3 Qe3 33.Ke3+=) 32.h4 (32.d4 Rh1 33.Kg2 Qf4 34.gf4 Ra1+=) 32...Qf4 (32...Qc5 33.Qe3=) 33.gf4+= Rh1 34.Kg3 (34.h5 f5 35.e5 Rh2 36.Ke3 Rh1+/–) 34...f5 35.e5 Kg7 (35...Rg1 36.Kf2 Rh1 37.h5+=) 36.d4+= Rb1 (36...Rg1 37.Kf3+=) 37.Kf2 Rb3 (37...Ra1 38.h5+=) 38.Bf1 (38.h5 Ra3+/–) 38...Rc3 (38...Rb2 39.Ke3 Rh2+=) 39.Be2 (39.h5 Rc2 40.Ke3 Rc3 41.Bd3 Kh6+/–) 39...Rb3 40.Bf1 (40.h5 Kh6+/–) 40...Ra3 (40...Rc3 41.Bg2+/–) 41.Be2 (41.Bg2 Ra2 42.Kf3 Rd2=) 41...Rh3 (better is 41...Rb3!?=) 42.h5+/– Rc3 (42...Rh1 43.Bf3 Ra1 44.Ke3+/–) 43.Bf1 (43.d5 Rc1+/–) 43...Rb3 (43...Kh6 44.Be2 Kg7+/–) 44.Be2 (44.d5 Rb2 45.Ke3 Kh6+/–) 44...Rb4 (44...Rc3 45.Bf3 Ra3+/–) 45.Ke3+/– Kh6 46.d5 Re4 47.Kd3 Kg7 (47...Kg7 48.d6 cd6 49.ed6 Re6=). Muri,Heinrich – Bouverot,Olivier, Coppa Latina5–04, 1995.

9.ab5 Ra1 10.Ba1 d6 11.0-0 Nbd7 12.c4 d5 13.Nc3=.

9.ab5 Ra1 10.Ba1 d6 11.0-0 Nbd7 12.Bd4 c6=.

9.ab5 Ra1 10.Ba1 d6 11.0-0 Nbd7 12.Nd4 (better is 12.Bd4!?=) 12...Qa8–/+ 13.Bb2 Bg2 14.Bf3 Bf3 15.Rf3 Nb8 16.d3 c5 17.bc6 Nc6 18.c4 d5 19.Rf2 Rd8 20.cd5 Nd5 (21.Qe2 Bc5 22.Nc6 Qc6–+; 20...ed5?! 21.Nf5 Qb7 22.Rg2=) 0–1. Dupont,G – Petkov,V, DDR–Cup corr, 1990.

9.ab5 Ra1 10.Ba1 Ne4 11.0-0=.

9.ab5 h6 10.0-0 c6 11.bc6 (11.Ra8 Ba8 12.Nc3 d6+=) 11...dc6 12.Na3 c5 (12...b5 13.Ne5=) 13.Nb5 (13.Ne5 Na6=) 13...Nc6 (13...Ra1 14.Ba1 Nc6 15.Ne5=) 14.c4 Nb4 (14...Ra1 15.Qa1 Nb4 16.Rd1=) 15.d4 (15.Ra8 Ba8 16.Ne5 Nd7+=) 15...cd4 16.Nfd4 Bc5 17.Qb3 Nc6 (17...Qe7 18.Rfb1=) 18.Nc6 Bc6 19.Bd4 (19.Ra8 Ba8 20.Bd4 Ne4 21.Bc5 Nc5=) 19...Bd4 (19...Qe7 20.Rfd1=) 20.Nd4 Bb7 (20...Be4 21.Ra8 Qa8 22.g3=) 21.Ra8 Qa8 22.Bf3 Bf3 23.gf3 (23.Nf3 Qe4=) 23...Qb7 (23...Rc8 24.Rd1=) 24.Kg2 (24.c5 Nd5=) 24...Nd7 25.Rb1 Attacking the isolated pawn on b6 25...Rb8 26.Qb5 Nc5 (26...Rc8 27.Rd1 Rc5 28.Qa4=) 27.Nc6 (better 27.f5=) 27...Ra8?? (better 27...Rc8 28.Ne5 f6=) 28.Na5 (better 28.Qc5! Qd7 29.Qb6+- (29.Rb6 Ra2 30.Kg3 Qd2 31.Ne7 Kh7 32.Qf5 ef5 33.Rh6 Kh6 34.Nf5 Kg6 35.Kg4 Qg2 36.Kh4 Qh2 37.Kg4 Rg2 38.Ng3 Qg3)) 28...Ra5–+ (28...ba5?! 29.Qb7 Nb7 30.Rb7–/+) 29.Qa5 (29.Qb6 Qb6 30.Rb6 Ra4–+) 0–1. blackcrowman (2080) – retiponziani (1875), ChessWorld.net, 2012.

9.a4 a5 (9...a6 10.Nc3=) 10.Nd4 Rc8 11.Bf3 d5 12.c4 (12.Nc3 Nc5=) 12...c5 (12...Nc5 13.Qc2=) 13.Ne2 (13.bc6 Bc6 14.Nc3 Nc5+=) 13...Rc7 (13...Qc7 14.Na3=) 14.Na3 Ne4 15.d3 (15.Qc2 Bf6=) 15...Bf6 (15...Nd6 16.Ng3=) 16.Bf6 Ndf6 17.g4 (17.Rc1 Nd6=) 17...Nd6+= 18.g5 Nd7 19.Ng3 Re8 (19...f6 20.g6 hg6 21.Qe2+=) 20.h4 (20.Rc1 d4+=) 20...Nf8 21.Qe2 f5 (21...Rd7 22.Rad1+=) 22.Rad1= Qe7 (22...Rd7 23.d4+=) 23.Qg2 (23.Rc1=) 23...d4 (23...Rd8 24.h5=) 24.Bb7 (24.ed4 cd4 25.Nc2 Bf3 26.Qf3 Nb7+/–) 24...Nb7= (worse is 24...Rb7 25.ed4 Nd7 26.Rfe1+/–) 25.e4 (25.ed4 cd4 26.Nc2 Qd6=) 25...Nd6 (25...fe4 26.Ne4 Qf7 27.Rde1=) 26.Rde1= Qd7 (26...Qf7 27.e5 Nb7 28.h5=) 27.h5 Rcc8 (27...fe4 28.Ne4 Nf5 29.h6=) 28.Nb1 (28.ef5 Nf5 29.Nf5 ef5 30.Qd5 Qf7 31.Qf7 Kf7=) 28...Qf7 (28...fe4 29.Ne4 Ne4 30.Re4=) 29.Nd2 Qb7 (29...Red8 30.h6=) 30.Nf3 (30.e5 Qg2 31.Kg2 Nf7+=) 30...fe4+= 31.Ne4 White gets kings attack 31...Nf5 (31...Ne4 32.Re4 Rcd8 33.Ne5+=) 32.Ne5 (32.Nd4 Qd7 33.Nf3+/–) 32...Qc7? (better is 32...Re7+=) 33.Nf6!+- gf6 (33...Kh8 34.Ne8 Re8 35.Qc6+-) 34.gf6 Discovered attack. Opening the g–file gets White a lot of play 34...Kh8 35.f7 Threatening mate: Qg8 35...Nh6 36.fe8Q Re8 37.Qg5 (37.Kh1 Qg7+-) 37...Qg7 (37...Nf5 38.Kf2 h6 39.Qf6 Qg7 40.Qg7 Kg7 41.Rg1 Kh7 42.Re2+-) 38.Kh2 (38.Kf2 Re7+-) 38...Nf5 (38...Re7 39.Rg1 Nf5 40.Re2+-) 39.Rg1 Re7 40.Qg7 (40.Nc6 Rd7+-) 40...Ng7 41.Rg5 h6 42.Ng6 Ng6 43.Rg6 Kh7 44.f5 (44.f5 Rb7 45.fe6 Nh5 46.e7 Re7 47.Re7 Kg6 48.Re6 Kf7 49.Rb6+-) 1–0. Schiffler – Klein,Kaba, Binz/Ruegen, 1950.

9.c4 c5 10.d3 d5 11.Nc3 Qc7 12.e4 (better is 12.cd5!? ed5 13.a4=) 12...Qf4 13.ed5 ed5 14.cd5 Nd5 15.Nd5 Bd5 16.d4 Bd6 (16...Qe3 17.Kh1–/+) 17.Ne5 (17.dc5 Bc5 18.Bd4 Rad8 19.Bc5 Nc5–/+) 17...Qe3 18.Kh1 Nf6 19.Bc4 (19.Bf3 Rad8 20.Nc6–/+) 19...Bb7 (19...cd4 20.Bd4 Bg2 21.Kg2 Qg5 22.Kh1 Be5 23.Be5 Qe5 24.Rc1–+) 20.Nf7 White gets strong play along the open f–file (20.Rc1 Rac8+=) 20...Rf7–/+ Threatening mate... how? 21.Rf6 Bg2?? (21...gf6 22.dc5 Discovered attack) 22.Kg2–/+ Qg5 23.Kh1 Qf6 (23...gf6 24.Qf3 Rc8 25.Rg1 Qg1 26.Kg1+-) 24.dc5 Qb2 25.Bf7 (25.Bf7 Kh8 26.cd6+-) 1–0. Svensson,Jan – Kempe,Age, corr SSKK, 1991.

9.Nd4 Nc5 10.a4 Rc8 (10...a6 11.Nc3=) 11.c4 (11.a5 c6+=) 11...a5 (11...d5 12.Na3=) 12.d3 Ne8 (12...Qd7 13.e4=) 13.Nd2 Bf6 14.Bf3 d5 15.Qe2 (15.Qc2 c6+=) 15...Nd6= 16.cd5 ed5 17.g4 (17.Bg4!? Rb8 18.N2f3+=) 17...Re8= 18.g5 (18.Bg2 h6=) 18...Bd4+= 19.Bd4 Ne6 20.Be5 Rb8 (20...Ng5!? 21.Bg2 Ne6–/+) 21.Bg4 (21.d4 Rc8=) 21...Nf8 (21...c5 22.bc6 Bc6 23.Rfc1+=) 22.Rf3 (22.Rac1 Ng6 23.Bd4 Bc8+=) 22...Ng6 23.Bb2 (23.Bd4 Bc8 24.Rf2 Nf5 25.Bf5 Bf5=) 23...Bc8 (23...c5 24.bc6 Bc6 25.Rff1=) 24.Bh5 Nf5 (24...Bf5 25.Rc1=) 25.Nf1 (25.Bg6 fg6 26.Rc1 Be6+=) 25...Qd6 (better is 25...Ngh4 26.Rf2 Bd7=) 26.Ng3 (better is 26.Rc1=) 26...Ngh4–/+ 27.Rf2 Re3 28.Nf5 Nf5 29.Qc2 d4 30.Ba3 Qa3 31.Ra3 Re1 32.Kg2 Ne3 33.Kg3 Rg1 (33...Nc2 34.Rc2 Re3 35.Kg2 Bb7 36.Kg1 Re1 37.Kf2 Re7+=) 34.Kh4+= Nc2 (34...Bg4 35.Bg4 Rg4 36.Kh3 Nc2 37.Rc2 Rf4 38.Rc7–/+) 35.Rc2–/+ Bf5 36.Re2 (36.Rc7 g6 37.Bf3 Re8–/+) 36...g6 37.Bf3 Be6 38.h3 (38.Bg2 Kg7–/+) 38...Kg7 39.Rg2 (39.Bg2 h6 40.gh6 Kh6–/+) 39...Rc1 (39...Rh1 40.Bg4 Re8 41.Be6 Re6 42.Raa2–+) 40.Rf2 (40.Re2 h6 41.Kg3 Rd8–/+) 40...Rd8 (40...Rd8 41.Rd2 h6–/+) 0–1. Kucharkowski,Jens – Hannebauer,Torsten, corr DDR, 1983.

5.c4 0-0+= 6.Nc3 d5 7.Qb3 (7.d4 Nbd7+=) 7...d4–/+ 8.Nce2 e5 9.Nf3 (9.Ng3 Nbd7–/+) 9...Bd6 10.Ng3 h6 (10...e4 11.Ng5 Re8 12.f3 ef3 13.gf3–/+) 11.a4 (11.Bd3!?+=) 11...e4–/+ 12.Nh4 Be5 13.ed4 cd4 14.Ngf5 Kh7 (14...Be6 15.f4 Bf4 16.Nd4–/+) 15.Ba3 (15.f4 Bf4 16.Nd4 Re8–/+) 15...Re8 16.c5 Be6 17.Bc4 Ng4 (better is 17...g5!? 18.Be6 fe6–+) 18.h3–/+ Nf2 (18...Nh2!?–/+) 19.Kf2= Qg5 20.Rhf1 d3 21.Rae1 (21.Rac1 Bf5 22.Nf5 Qf5 23.Kg1 Bd4 24.Kh1+=) 21...Bh2 (21...Bf5 22.Nf5 Qf5 23.Kg1 Qd7 24.Rf7 Qd4 25.Kh1 Rd8+/–) 22.Re4?? (better is 22.Re3 Bf5 23.Nf5 Qf5 24.Ke1=) 22…Bf5–+ (22...Bf5 23.Bd3 Qg3 24.Ke2 Be4–+) 0–1. Zylla,Johannes – Karges, BSF–Pokal, 1995.

5.c4 0-0 6.Nf3 d5 7.a4 b6 8.Be2 a5 9.0-0 Nbd7 10.d3 Bb7 11.Nbd2 Qc7 12.Qc2 Ng4 13.h3 Nge5 (13...Ngf6 14.Rac1=) 14.Ne5+= Ne5 15.e4 (15.cd5 Bd5 16.Rac1 Ng6=) 15...dc4 (15...d4 16.Rae1=) 16.dc4 Ng6 17.g3 f5 (17...Rad8 18.Rad1=) 18.ef5 (18.Bh5 Rad8=) 18...ef5 (worse 18...Rf5 19.Bg4+-) 19.Bf3 (19.Bh5 Rad8 20.Bg6 hg6=) 19...Bf3 20.Nf3 Bf6 ½–½. Melich,Jindrich (2160) – Sladek,Jaroslav (2560), Klatovy, 1999.

5.c4 b6 6.Nf3= h6 (6...0-0 7.Be2=) 7.Be2 d6 (7...0-0 8.0-0+=) 8.0-0 e5 (8...a6 9.Nc3+=) 9.d3 (9.Nc3+=) 9...Nh7 (9...a6 10.ba6 0-0 11.d4 cd4 12.ed4=) 10.e4 (10.Nc3 0-0+/–) 10...Nd7 (10...0-0 11.Nc3+=) 11.Nc3 Ndf6 (11...Nhf6 12.Nd5+=) 12.h3 (12.Nd5 Nd5 13.cd5 a6+=) 12...0-0+= 13.Qc2 (13.Nd5 Nd5 14.cd5 a6=) 13...Ne8 (13...a6 14.ba6 Ra6 15.Rfb1+=) 14.Nd5 Bg5 (14...Nhf6!?+=) 15.Ng5+/– Ng5 16.f4 Nh7? (better is 16...ef4!? 17.a3 a6+/–) 17.fe5+- de5 18.Be5 f6 (18...Bh3 19.Bg7! Qg5 20.Nf4 Ng7 21.Nh3 Qe3 22.Kh2+/–) 19.Bc3 (19.Bf4 a6+-) 19...Be6 (19...a6 20.ba6 Nd6 21.Rab1 Ra6 22.Qb3+-) 20.Nf4 (20.d4 cd4 21.Bd4 Rc8+-) 20...Bf7 (20...Nc7 21.Ne6 Ne6 22.Bg4+-) 21.Rf3 (21.Nd5 Be6 22.d4 cd4 23.Bd4 Rc8+-) 21...g5 (21...Ng5!? 22.Rf2 a6+-) 22.Rg3 (22.Nd5 a6+-) 22...Qd6 (22...a6+-) 23.Rf1+/– Kh8 (23...Ng7 24.e5 fe5=) 24.Nd5?? (24.e5 fe5 25.Re3+-) 24...Qg3–+ 25.Ne7 (25.Rf3 Qd6–+) 25...Qc7 26.Nf5 Bg6 27.Nh6–/+ Qe7 28.Bf3 Rd8 29.Qe2 Ng7 30.Re1 Qc7 31.a4 Ne6 32.Bh5?? Nf4 (32...Nf4 33.Bg6 Ne2 (33...Ng6?! 34.Nf5–+) 34.Re2 Rd3–+) 0–1. Dopper,Johan – Bloom,Aad, 1992.

5.c4 d5 6.Nf3+=.

5.Nf3 0-0 6.a4 d5 7.d3 a6 8.c4 dc4 9.dc4 Qd1 10.Kd1 ab5 11.cb5 b6 12.Nbd2 Bb7 13.Bc4 Rd8 14.Ke2 Nbd7 15.Rhd1 Nd5 16.Ne5 Ne5 17.Be5 Nb4 18.Nf3 Bf3 19.gf3 Rd1 20.Kd1 Rd8 21.Ke2 Kf8 22.Bc7 Rc8 23.Bb6 Nd5 24.Bd5 ed5 25.a5 c4 26.Rd1 c3 27.Rc1 Bb4 28.Kd3 Ke7 29.Kc2 Kd6 30.Kb3 Bc5 31.Bc5 Rc5 32.Kb4 Rc4 33.Kb3 Rc5 34.b6 Ra5 35.Rc3 Rb5 36.Ka4 Rb6 37.Ka5 Rb1 38.Rc8 Rb2 39.Rd8 Ke7 40.Rc8 Rf2 41.Rc7 Kf6 42.f4 Rf3 43.Rc6 Kf5 44.Rc7 Kg6 45.Rc6 f6 46.Rc3 Rh3 47.Kb5 Rh2 48.Kc5 Rd2 49.Kd6 h5 50.Ke6 h4 51.f5 Kg5 52.Kf7 h3 53.e4 de4 0–1. Abdullaevich (1835) – Kwena (1795), lichess.org, 2020.

5.Nf3 0-0 6.c4 b6 (6...d5 7.Nc3=) 7.Be2 (7.Nc3 d5+=) 7...Bb7 8.d3 d5 9.Nbd2 Re8 10.a4 Nbd7 11.0-0 Qc7 12.Qc2 Rac8 (12...a6 13.h3=) 13.Ra3 (13.a5 ba5 14.Bc3 a6+=) 13...d4 14.e4 (worse 14.ed4 cd4 15.Raa1 e5–/+) 14...Nf8 15.a5 Ng6 (worse 15...ba5 16.Rfa1+-) 16.Rfa1 Nf4 17.Bf1 Ng6 18.g3 Ng4 19.ab6 (19.Bg2 e5+=) 19...ab6= 20.Ra7 f5 (20...Ra8 21.Be2 Ra7 22.Ra7=) 21.Bg2 (21.h3 Nh6 22.h4 Rb8+=) 21...Rb8 (21...f4!?+=) 22.h3+- Nh6 23.Re1 White intends e5 (better 23.h4!?+=) 23...f4=+ 24.e5 fg3 25.fg3 Nf5 26.Kf2? (better 26.Nf1=+) 26...Ne3 27.Qb1? (27.Re3 de3 28.Ke3–/+) 27...Ng2 (27...Ne5 28.Ne5 Ng2 29.Nc6 Ne1 30.Qe1–+) 28.Kg2?? (28.Rb7 Qb7 29.Kg2–+) 28…Bf3 (28...Bf3 29.Nf3 Qa7–+) 0–1. dinofan (1805) – tino_vegh (2015), gameknot.com, 2014.

5.Nf3 0-0 6.Be2 Qb6 (6...d5 7.0-0=) 7.a4 a5 8.d4 d5 9.c4 Ne4 (9...Rd8 10.dc5 Bc5 11.Bf6 gf6 12.0-0+=) 10.cd5+= ed5 11.dc5 Nc5 (11...Qg6!? 12.Qd5 Rd8+=) 12.Nc3+/– Qd8 (12...Be6 13.Nd5 Bd5 14.Qd5+/–) 13.Nd5+- Ne4? (better is 13...Bd6+-) 14.Ne7 Qe7 15.Ba3 Nc5 (15...Qd8 16.Bf8 Qf8 17.Rc1+-) 16.Qd5 Qf6 (16...Nbd7 17.Rc1 Qe6 18.Qe6 Ne6 19.Bf8 Kf8 20.Bd1+-) 17.Rc1 (17.Qc5?! Qa1 18.Qc1 Qc1 19.Bc1 Bg4=) 17...Nbd7 18.Bc5 (18.Rc5?! Qa1 19.Bc1 Nc5 20.Qc5 Qa4+-) 18...Qb2 (18...Nc5 19.Qc5 Be6 20.Qd4+-) 19.Qd2 Qd2 20.Nd2 Nc5 21.Rc5 b6 (21...Be6 22.Rc7 b6 23.Nc4 Bc4 24.Bc4+-) 22.Rc6 1–0. Jung,Michael – Gurdan,Christof, DESC, 2000.

5.Nf3 a6 6.Be2 d5 7.0-0 0-0 8.a4 c4 (8...Nbd7 9.d3=) 9.Nc3 Bb4 10.d3 (better is 10.Qe1=) 10...Bc3 (better is 10...Qa5 11.Nb1 c3+=) 11.Bc3+/– ab5 (11...cd3 12.Bd3 Nbd7 13.Qb1+=) 12.ab5 Ra1 13.Qa1 Bd7? (better is 13...cd3 14.cd3 Nbd7+/–) 14.dc4+- Ne4?! (14...dc4 15.Bc4 Qe7+-) 15.Bg7 Re8 16.Qd4 f6 17.Bh6 Qe7 18.cd5 ed5 19.Qd5 Qe6 20.Qb7 f5 21.Bf4 Nc3 22.Nd4 Ne2 23.Ne2 Qc4 24.Nd4 Be6 25.Bb8 Bd5 26.Qc7 Qb4 27.Nf5 Qf8 28.Qg3 Kf7 29.Nd6 Ke7 30.Qg5 Ke6 31.Ne8 Qe8 32.Qe5 Kf7 33.Qd5 (33.Qd5 Ke7 34.Bd6 Kf6 35.b6+-) 1–0. Bonetti,Shane – guest1056, ICC, 2002.

5.Nf3 d5 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 c5).

5.a4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 c6 4.a4 Be7 5.e3).

5.a4 a6 6.c4 0-0 7.Nf3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 a6).

5.c4 0-0 6.Nc3 a6 7.a4 cb5 8.ab5 Nc6?? (better is 8...d5=) 9.bc6+- dc6 10.Nf3 b5 11.cb5 ab5 (11...cb5 12.Nb5! Bb7+-) 12.Ra8 Qc7 13.Ra1 Bd6 14.Be2 Bb7 15.h3 c5 (15...b4 16.Na4 e5 17.d4 ed4 18.Nd4+-) 16.d4 (better is 16.Nb5!? Qe7+-) 16...cd4 17.Nd4 (17.Nb5 Bb4 18.Kf1 Qe7 19.Qd4 Ra8+-) 17...Bc5 (17...Bg2 18.Rg1 Bb4 19.Rg2 Bc3 20.Bc3 Qc3 21.Kf1+-) 18.Ndb5 Qc6 19.Ba3 (better is 19.Bf3 Qb6+-) 19...Qg2 20.Bc5 Qh1 (20...Qh1 21.Kd2 Rd8 22.Kc2 Be4 23.Bd3 Bd3 24.Qd3 Rd3 25.Rh1 Rd7+-). elefante22 – Fournier,Frederic, Active Blind, 2008.

5.c4 0-0 6.Nf3 d5 7.a4 b6 8.Be2 c5 9.0-0= Nbd7 10.d4 Bb7 11.Nbd2 h6 (11...a6 12.ba6 Ba6 13.Rb1=) 12.h3 (12.a5 ba5 13.Bc3 a6 14.Ba5 Qb8=) 12...Nh7 (12...a6 13.cd5 Nd5 14.ba6 Ba6 15.e4 Be2 16.Qe2=) 13.Qb3 (13.cd5 Bd5 14.e4 Bb7+=) 13...f5 (13...cd4 14.Bd4 Nc5 15.Qc3+=) 14.Ne5 (14.a5 ba5 15.Bc3 Bd6+=) 14...Ne5= 15.de5 Qc7 16.f4 (16.cd5 Bd5 17.Bc4 Qb7+=) 16...Kh8 (16...Rad8 17.a5=) 17.Rad1 Rfd8 (17...Rad8 18.Qc2+=) 18.Nb1 (18.cd5 Bd5 (worse is 18...Rd5 19.Bc4+/–) 19.Bc4 Qb7+=) 18...Rd7 (18...a6 19.ba6 Ba6 20.Nc3=) 19.Rd2 (19.Qc2 Rad8+=) 19...Rad8= 20.Rfd1 Qc8 21.Kh2 Qa8 22.Qc2 (22.Bf3 a6=) 22...g6 (22...Nf8 23.Bf3=) 23.Bf1 Nf8 24.cd5 Rd5 (24...Bd5 25.Bd3+=) 25.Nc3 Rd2 26.Rd2 Kg8 27.Bc4 Kf7 (27...Rd2 28.Qd2 a6 29.Kg1+=) 28.Bd3 (28.Rd8 Bd8 29.Bd3 g5+/–) 28...Qc8 29.Nd1 (29.Be2 Rd2 30.Qd2 Kg8+=) 29...a6 (29...c4 30.Be2 Rd2 31.Qd2+=) 30.Bc1 (30.Nc3 ab5 31.Bb5 Rd2 32.Qd2 Kg8+=) 30...ab5 31.ab5 Qa8 32.Nb2 (32.Nc3 Kg7+=) 32...Bd5 (32...Be4 33.Be4 Rd2 34.Bd2 (34.Ba8?? Rc2 35.Na4 Rc1 36.Nb6 c4–+; 34.Qd2?! Qe4 35.Qe2 Kg8=) 34...Qe4 35.Qe4 fe4 36.Na4+/–) 33.Nc4 Bc4 (33...Qb7 34.Bb2=) 34.Bc4+= Rd2 35.Bd2 h5 (35...Kg7 36.Bc3+=) 36.Bc3 (36.Bd3 Qe8+/–) 36...Qa3 (36...Qe4 37.Qe2+/–) 37.Bd3 Qa8 (37...g5 38.fg5 Bg5 39.e4 fe4 40.Be4+=) 38.e4 (38.Bd2 Qe8+/–) 38...c4 39.Bc4 Qe4 40.Qe4 fe4 41.Bd4 (41.g4 Bc5+/–) 41...Nd7 42.g4 (42.Kg3 Bc5 43.Bc5 bc5+/–) 42...hg4 (42...Bc5 43.Bc5 bc5 44.Kg3+=) 43.hg4 Bc5 44.Bc5 Nc5 (44...bc5 45.Kg3+=) 45.Kg3+/– Ke7 (45...g5 46.fg5 Nd3 47.Kg2–+) 46.Kf2 Nd7 (better is 46...g5!? 47.Ke3 gf4 48.Kf4 Kf7+/–) 47.Ke3+- Nc5 48.Kd4 (48.g5 Kd7+-) 48...g5 49.f5 ef5 50.gf5 g4 51.f6 (51.Ke3 g3 52.Bf1 Nd3 53.Ke4 Ne1 54.f6 Kf7+-) 51...Kf8? (51...Kd7 52.Be2 g3 53.Bg4 Ke8 54.e6 Ne6 55.Ke3–+ (55.Ke4?? g2 56.Be6 g1Q–+)) 52.e6 Ke8?? (52...g3 53.e7 Ke8+-) 53.Bd5+- Kf8 (53...Ne6 54.Be6 g3+-) 54.e7 Ke8 55.Bc6 Nd7 Plans e3 56.Ke4 (56.Ke4 Kf7 57.Bd7 Kg6 58.e8Q Kf6 59.Qf8 Kg6 60.Bf5 Kg5 61.Qg7 Kh5 62.Qg4 Kh6 63.Qg6) 1–0. Danek,Vaclav – Voracek,Miroslav, Klatovy op–B, 1996.

5.c4 cb5 6.cb5 b6 7.Nf3 Bb7 8.Nc3 0-0 9.Be2 d6 10.0-0 Nbd7 11.d4 Rc8 12.Qa4 Qc7 13.Rfc1 (13.Qa7?? Ra8 14.Qa8 Ra8–+) 13...Qb8 14.Nd2 Nd5 15.Nd5 Bd5 16.e4 Ba8 17.Ba3 Bg5 18.Nc4 (better is 18.Rc6 Bd2 19.Bd6=) 18...Bc1–/+ 19.Rc1 Be4 20.Qb3 (20.Re1 d5 21.Nd6 Bc2–+) 20...d5 21.Qe3 (better is 21.Bf8 Nf8 22.Qe3–+) 21...Rc4?? (21...Rfd8 22.Nd6 Rc1 23.Qc1 Nf6–+) 22.Bc4= Rc8 23.Bf1 Rc1 24.Qc1 Nf6 25.Qc6 Ne8 26.Qd7 Bg6 27.Be7 Nf6 28.Qc6 Ne8 29.a4 h6 30.Bb4 Kh7 31.a5 Qd8 32.a6 Qb8 (32...Qh4!? 33.Qe8 Qd4=) 33.g3 Bf5? (33...Qd8 34.Be2 Qg5=) 34.Qb7+- Qc7 35.Qc7 Nc7 36.Bd6 Na8 37.Bb8 Bc2 38.Ba7 Kg6 39.Bb8 Kf5 (39...f6 40.a7+-) 40.f3 h5 41.Kf2 g5 (41...Kg6 42.f4+-) 42.Ke3 f6 (42...Kg6 43.Be2+-) 43.Kd2 Ba4 (43...Bb1 44.Kc1 Be4+-) 44.Bd3 1–0. Mikhaylov,Dimitri (1850) – Shevchuk,Vladimir, St Petersburg RUS, Chigorin Mem, 2012.

5.Nf3 cb5 6.Bb5 a6 7.Be2 b5 8.0-0 d5 9.a4 b4 10.c3 bc3 11.Nc3 Ne4 (11...Nc6 12.d4=) 12.Ne4 de4 13.Qb1 ef3? (better is 13...Bb7 14.Ne1 Bd5+=) 14.Bf3+- 0-0 15.Ba8 Nd7 16.d4 Nf6 17.Rc1 Qd6 (17...Bd6 18.Ba3+-) 18.Bc6 Bd7 (18...Ng4 19.g3 Qd8+-) 19.Ba3 (19.Ba3 Qa3 20.Ra3 Ba3 21.Rc2 Bc6 22.Rc6+-) 1–0. Bonetti,Shane – varenne, ICC, 2002.

5.Nf3 Qb6 6.a4 0-0 7.a5 (7.Be2 d6=) 7...Qd8 8.c4 d5 9.d4 (9.Nc3 dc4 10.Bc4 cb5 11.Nb5 Nc6+=) 9...cb5 10.cb5 a6 (10...Bb4 11.Bc3 Bd6 12.Bd3=) 11.b6= Nc6 12.Be2 Bb4 13.Bc3 Bd6 14.Nbd2 Bd7 15.Ne5 Rc8 16.Qb3 Qe7 17.Nd7 (17.0-0 Rfe8=) 17...Qd7 18.0-0 h6 19.Rfe1 Nh7 (19...Rfe8 20.Rac1=) 20.e4+= de4 21.Ne4 Be7 22.Rad1 Nf6 23.Bf3 (23.Nc5 Qd5 24.Bc4 Qd6+-) 23...Rcd8 The pressure on the isolated pawn grows (better is 23...Nd5!?+=) 24.Nf6+/– Bf6 25.d5 ed5 26.Rd5 Qc8 27.Bf6 gf6 28.Rc5 (28.Qe3 Rde8 29.Be4 Qg4+-) 28...Rfe8 29.Re3 Re3 30.Qe3 Re8 (30...Kg7 31.Bd5+-) 31.Qc3 (better is 31.Qc1!?+-) 31...Qe6+/– 32.g3 Nd8 (32...Qe1 33.Qe1 Re1 34.Kg2+-) 33.Kg2 Kg7 34.Rc8 Kf8 35.Qc7 Qe7 36.Rb8 Ne6 37.Qe7 (37.Qe7 Ke7 38.Rb7 Kd6 39.Rf7+-) 1–0. Hartmann,A – Radloff,A, corr DDR, 1990.

5.Nf3 Qb6 6.c4 cb5 7.cb5 a6 (7...0-0 8.Be2=) 8.a4 0-0 9.Be2 d5 10.0-0 Bd7 11.Bd4 Qd8 12.Qc2 ab5 13.ab5 Ra1 14.Ba1 Qc8 (14...Qa5 15.Bc3 Qc7 16.Qb2=) 15.Rc1 Ne4?? (15...Qc2 16.Rc2 Rc8 17.Rc8 Bc8 18.Be5=) 16.d3 (better is 16.Qb2 Bf6 17.Rc8 Bb2 18.Rf8 Kf8 19.Bb2 Bc8+-) 16...Nc5?? (16...Qc2!? 17.Rc2 Nd6=) 17.Nc3?? (17.Qb2 d4+-) 17...Bf6? (17...Qe8 18.Bb2+=) 18.e4 (18.Nd5 ed5 19.Bf6+- (19.Qc5 Qc5 20.Rc5 Ba1–/+)) 18...de4+= 19.de4 b6 20.e5 Be7 21.Bb2 Qc7 (21...Qb7 22.Nd2+=) 22.Ne4+/– Rc8 23.Neg5 g6 24.h3 (24.Ne4 Qd8+/–) 24...h6 (24...Qb7!? 25.h4 h6+=) 25.Ne4+/– Qd8 (25...Qb7 26.Nd6 Bd6 27.ed6+/–) 26.Nd6 Bd6 27.ed6 Nb7 28.Qd3 (28.Qd2 Qf8+-) 28...Nc5? (better is 28...Rc1!? 29.Bc1 Be8 30.Bh6 f6+-) 29.Qd4+- f6 30.Qf4 (30.Qf6 Qf6 31.Bf6 Ne4 32.Rc8 Bc8+-) 30...e5? (better is 30...Kg7+/–) 31.Qh6+- Bf5 (31...Qe8 32.Be5! Qf8 33.Bc4 Ne6 34.Qg6 Qg7 35.Qf6 Qf6 36.Bf6+-) 32.Ne5! Qd6 (32...fe5 33.Be5 Combination) 33.Ng6 Kf7 (33...Nbd7 34.Rd1 Qd1 35.Bd1+-) 34.Bc4 (34.Qh7 Ke8 35.Qg8 Kd7 36.Qf7 Kd8 37.Bf6 Qf6 38.Qf6 Kc7 39.Qe5 Kb7 40.Bf3 Nc6 41.bc6 Rc6 42.Qf5 Kb8 43.Qe5 Kb7 44.Qd5 Nb3 45.Qc6 Ka6 46.Qa8 Kb5 47.Bc6 Kb4 48.Qa4) 34...Ke8 (34...Be6 35.Qh7 Ke8 36.Re1+-) 35.Nf4 (35.Qh8 Kd7 36.Qg7 Kd8 37.Bf6 Qf6 38.Qf6 Kc7 39.Qe5 Kb7 40.Bd5 Rc6 41.bc6 Nc6 42.Qf5 Kc7 43.Qf7 Kd6 44.Qf6 Kd7 45.Qc6 Kd8 46.Qd6 Ke8 47.Qe7) 35...Nbd7 (35...Nd3 36.Qh8 Kd7 37.Be6 Be6 38.Rc8+-) 36.Nd5 (36.Qh8 Nf8 37.Qh5 Kd8+-) 36...Ne4 (36...Nd3 37.Qh5 Kd8 38.Qh8 Nf8 39.Bf6 Ke8 40.Ra1+-) 37.Rd1 (37.Qh5 Kd8 38.Qf5 Nec5+-) 37...Qc5 (37...Rc4 38.Nf6! Qf6 39.Bf6 Nef6 40.Rd7 Nd7 41.Qh5 Ke7 42.Qf5+-) 38.Nf6 (better is 38.Qh5 Kd8 39.Qf5 Qf2 40.Qf2 Nf2+-) 38...Ndf6 39.Bf6 Nf6 40.Qf6 Bh3 (40...Qc4 41.Qf5 Qc3+-) 41.Qh8 (41.Qf7) 41...Ke7 (41...Qf8 42.Qh5 Ke7 43.Qe5 Be6 44.Qe6) 42.Qg7 Ke8 43.Qf7 1–0. Zaichenko,Andrey – Stoyanov,Zdravko, FICGS, 2008.

5.Nf3 d5 6.Ne5=.

6.a4 d5 7.Be2 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 c6 7.a4).

6.Nc3 d5 7.g3 (7.Be2 cb5 8.Nb5 a6+=) 7...a6+= 8.a4 ab5=. Plath – Zimmer, corr SOK–89–39, 1989.

6.Nc3 d6 7.Bc4 cb5+= (7...Qc7 8.0-0 a6 (8...d5 9.Be2 Nbd7 10.Rb1 Rb8 11.d4 e5 12.Ne5 Ne5) 9.a4 cb5 10.Bd3 b4 11.Ne4 Ne4 12.Be4 Nd7) 8.Bb5 a6 (8...e5 9.0-0+= (9.Qe2 a6 10.Ba4 Nbd7 11.0-0 Nc5 12.Bb3 Bd7) 9...Nc6 10.Qe2 a6 11.Ba4 Bd7 12.Rab1 Qa5; 8...Qb6 9.Rb1 Nc6 10.0-0 e5 11.Bd3 Qa5 12.e4 Be6; 8...Nc6 9.0-0 e5 10.Qe2 a6 11.Ba4 h6 12.h3 Bd7; 8...Bd7 9.0-0 Nc6 10.Qe2 d5 11.Bd3 Qa5 12.Rfe1 a6; 8...Qa5 9.0-0 Nc6 10.Qe2 Bd7 11.h3 a6 12.Ba4 b5; 8...d5 9.0-0 Nc6 10.h3 Bd7 11.Qe2 h6 12.a4 Qc7; 8...Na6 9.0-0 Bd7 10.h3 Bb5 11.Nb5 Nc5 12.c4 a6) 9.Be2 (9.Bd3 b5+= (9...Nbd7 10.0-0 Nc5 11.Be2 Bd7 12.d4 Nce4) 10.a4 b4 11.Ne4 Nc6 12.0-0 d5; 9.Bc4 d5 10.Bb3 Nc6 11.0-0 Bd7 12.Ne2 Ne4) 9...Nc6 (9...b5 10.0-0+= Bb7 11.Nd4 b4 12.Na4 Qa5) 10.0-0 (10.a4 d5+= (10...e5 11.0-0 e4 12.Ng5 d5) 11.0-0 e5 12.d4 e4) 10...d5 (10...b5 11.a3+= (11.Bd3 Nb4 12.Be2 Nc6) 11...Bb7 12.Bd3 d5; 10...Bd7 11.h3 d5 12.Bd3 Qc7) 11.Rb1 (11.a4 e5+= (11...Bd7 12.h3 h6) 12.d4 e4; 11.h3 Bd7 12.Bd3 Qc7) 11...Ne4 (11...e5 12.a4+= (12.d4 e4) 12...d4; 11...Bd7 12.Bd3 Qc7) 12.d3 (12.Ne4 de4 13.Nd4 Nd4 14.Bd4 Qa5=) 12...Nc3 (12...Nf6 13.a3+=) 13.Bc3= Bf6 (13...b5 14.Nd4 Qc7 15.Nc6 Qc6 16.Bd4=) 14.d4 (14.Bf6 Qf6 15.d4 Rd8=) 14...b5 15.Qd2 (15.Bd3 Qc7=) 15...Bd7 (15...Be7 16.Bd3=) 16.Bb4 (better is 16.a4 ba4 17.Ra1=) 16...a5?? (better is 16...Nb4 17.Qb4 Be7+=) 17.Bc5?? (better is 17.Bf8 Qf8 18.Bb5+- (worse is 18.Rb5 Nb4+-)) 17...Ne7 (17...Be7 18.Be7 Qe7 19.Bb5+/–) 18.Bb5 Bb5 19.Rb5 Re8 (19...Qc7 20.Rfb1 Rfb8 21.a3+/–) 20.Rfb1 a4 21.Rb7 Nc6+/– 22.Bb6 Qc8?? 23.Rc7+- Qb8 24.Rc6 a3 25.Rb3 Be7 26.Bc5 Qd8 27.Be7 Qe7 28.Qc3 Qd7 29.Ne5 Qa7 30.Rc7 Qa6 31.Rbb7 Rf8 32.Nf7 Qe2 33.h3 Qd1 34.Kh2 Qe2 35.Nh6! gh6 36.Rg7 (36.Rg7 Kh8 37.Rh7 Kg8 38.Rbg7) 1–0. Pscheidl,Udo (1780) – Klebe,Dieter (1755), RSS7E easy–106, 2010.

6.c4 a6 7.ba6 Na6 8.Be2 d5 9.cd5 ed5 10.0-0 Nc7 11.d4 Ne6 12.Nc3 h6 13.h3 b6 14.Ne5 Bb7 15.Ng4 Ng4 16.Bg4 Bd6 17.a4 f5 18.Bh5 Qf6 19.Ne2 g6 20.Bf3 Ng5 21.Ng3 Ba6–/+ 22.Be2 Be2 23.Ne2=+ Rfe8 24.Qc2 Rac8 25.a5= ba5 26.Ra5 Ra8 27.Ra8 Ra8 28.f4 Ne4 29.Qc6 Rb8 30.Qd5+/– Kg7 31.Qa2 Qe7 32.d5 Kf7 33.Be5! Rb7 34.Nd4 Ra7 35.Qc2 Rc7 36.Nc6 Qd7 37.Ra1 Rb7 38.Ra8 Rc7 39.Qa2 1–0. gtate (1970) – alexp (2135), net–chess.com, 2007.

6.bc6 bc6 7.d4 Ba6 8.Bd3 Qb6 9.Bc3 Bb4 10.0-0 Bd3 11.cd3 Na6 12.a3 Bc3 13.Nc3 Qc7 (13...Qa5 14.Ne4+=) 14.Qa4 Nb8 15.Rfc1 d5 (15...d6 16.Rab1+=) 16.Rc2+- Nbd7 (16...Qe7 17.Rb1+-) 17.Na2 Ng4 (17...Qb7 18.Qc6 Qc6 19.Rc6+-) 18.Nb4 c5 19.Na6 Qd8 20.h3 Nb6 (20...Ngf6 21.dc5 Re8 22.Rb1+-) 21.Qa5 f5? (better 21...cd4 22.hg4 de3 23.fe3 Qf6+-) 22.Nc5 (22.hg4?! fg4 23.Ne5 cd4 24.ed4 g3 25.fg3 Qg5+-) 22...Qf6 23.hg4 fg4 24.Ne5 Qh4 (24...g3 25.fg3 Qh6 26.Re1+-) 25.Ne6 Rf6 (25...g3 26.fg3 Qg3 27.Qe1 Qe1 28.Re1+-) 26.g3 Qh5 (26...Qh3 27.Nf4 Rf4 28.ef4+-) 27.Nf4 Qg5 (27...Rf4 28.gf4 Qh4 29.Rb1+-) 28.Nd5 1–0. Panza (2640) – unclegrueben (1840), ChessWorld.net, 2006.

6.Be2 a6 7.a4 a5 (7...d5 8.0-0=) 8.0-0 Ne4 (8...d6 9.Nc3=) 9.d3+= Nc5 10.c4 d5 11.d4 Ne4 12.Nc3 Nc3 13.Bc3 c5 (13...cb5!? 14.cb5 Bd6+=) 14.dc5+/– Bc5 15.cd5 ed5 (15...Qd5 16.Qd5 ed5 17.Rac1+/–) 16.Rc1 Ba3 (16...Qd6 17.Be5 Qb6 18.Bd4 Bd4 19.Qd4 (worse is 19.ed4 Bf5+=) 19...Qd4 20.Nd4+/–) 17.Qd4 f6 18.Rcd1 Be7 (better is 18...Re8!?+-) 19.Bc4! dc4 20.Qc4 Kh8 21.Rd8 Rd8 22.Qf7 Bg4 (22...Bb4 23.Bf6! Rg8+-) 23.Qe7 Nd7 24.h3 Bf5 (24...Re8 25.Qd6 Bf3 26.gf3+-) 25.Nd4 Ne5 (25...Re8 26.Qd6 Bd3 27.Qd7 Bf1+-) 26.Nf5 Ng6 27.Qg7 1–0. Woschkat,Karl_Heinz – Graefe,Hartmut, CiF, 2002.

6.Be2 cb5 7.Bb5 d5 8.0-0+=.

(--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7).

5.c4 c6 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c6 5.c4 Bd6).

5.c4 c6 6.a4 0-0 7.Nf3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4).

5.Nf3 0-0 6.c4 c5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0).

5.Nf3 0-0 6.c4 c6 7.a4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4).

5.Nf3 0-0 6.Be2 c5 7.c4 b6 8.a4 Nbd7 9.0-0 Bb7 (--> 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4 Nbd7).

5.Nf3 0-0 6.Be2 c5 7.c4 dc4 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4 0-0 7.Be2 dc4).

5.Nf3 c5 6.c4 (---> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Be7 6.c4).

5.Nf3 Bd7 6.c4 c6 7.a4 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4 0-0 7.c4 Bd7).

5.Nf3 Nbd7 6.Be2 0-0 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Be2 Nbd7).

5.a4 0-0 6.c4 Nbd7 7.Nf3 b6 8.Be2 Bb7 9.d4 a6 10.Nc3 c5 11.0-0 ab5 12.ab5 Qc7 (12...Ra1 13.Ba1 cd4 14.Qd4=) 13.Qc2 (13.Ra8 Ra8 14.d5 Ng4=) 13...cd4 (13...Ra1 14.Ra1 Bf3 15.Bf3 cd4 16.ed4 Qc4 17.Bc6=) 14.ed4 (14.Nd4 Rfc8=) 14...Rfc8 (14...Ra1 15.Ra1 Bf3 16.Bf3 Qc4 17.Bc6=) 15.Qb3 (15.Ba3 Ra5 16.Nd2 Rca8=) 15...Nf8 (15...d5 16.cd5 Nd5 17.Nd5 Bd5 18.Qe3=+) 16.Rfd1 (16.d5 N8d7=) 16...Ng6 17.Rdc1 (17.Ra8 Ra8 18.d5 Nf4=) 17...Nf4-/+ 18.Bd1 (18.Ra8 Ba8 19.Ne1 d5 20.cd5 Bd5=+) 18...Ra1 (18...Qc4 19.Ra8 Ba8 20.Na4 Qc1 21.Bc1 Rc1 22.Nc3-+) 19.Ba1 (19.Ra1 Qc4 20.Qc4 Rc4 21.Ra7-/+) 19...Ra8 (better 19...Qc4 20.Qc4 Rc4-+) 20.Bb2=+ Rc8 (20...h6 21.Ne2 Ne2 22.Be2=) 21.Ne2= Ne2 22.Be2 Ba8 23.Ra1 (23.Qe3 Ng4 24.Qf4 Nf6+=) 23...Bb7 24.Ra7 Ra8 (24...Qb8 25.Qa3=) 25.Qa4 (25.Ra8 Ba8 26.Ba3 Qb7=) 25...Qb8 (25...Ra7 26.Qa7 d5 27.Ne5 dc4 28.Nc4=) 26.Ra8= Qa8 27.Qa8 Ba8 28.h3 h6 29.Nd2 Kf8 (29...d5 30.Bf3=) 30.Bd3 (30.Kf1 d5=) 30...Ke8 (30...d5 31.cd5 Bd5 32.Nc4 Bc4 33.Bc4=) 31.Kf1 (31.Nb3 h5+=) 31...Kd7 (31...d5 32.g3=) 32.f3 (32.Nb3 Be4 33.Be4 Ne4+=) 32...Bb7 (32...d5 33.Bc3=) 33.Ne4 (33.Nb3 Nh5+=) 33...Ne4 (33...d5!? 34.Nf6 Bf6=) 34.fe4+= f6 (34...Bf6 35.g3+=) 35.Kf2 (35.d5 h5+=) 35...d5 36.cd5 ed5 37.Ke3 de4 (37...h5 38.g4+=) 38.Be4+/- Be4 39.Ke4 g6 40.g4 Bd6 41.Bc3 Ke6 42.Bd2 (better 42.d5 Kf7 43.Bd4+/-) 42...Kf7? (better 42...f5 43.gf5 gf5 44.Kd3 h5=) 43.Bh6 (43.Kd5 Ke7+-) 43...g5 44.h4?? (44.Kd5 Bb4+-) 44...Kg6?? (better 44...gh4 45.d5 Ke7=+) 45.hg5+- fg5 46.Kd5 Be7 (46...Ba3 47.Bg5 Kg5+-) 47.Bg5 (47.Ke6 Bd8 48.Bf8+-) 47...Kg5+/- 48.Ke6 Bb4 49.d5 (49.Kd7!? Kg4 50.Kc6+/-) 49...Kg4+= 50.d6 (better 50.Kd7 Kf5 51.Kc7=) 50...Bd6?? (better 50...Bd2=) 51.Kd6+- Kf5 52.Kc6 Ke6 53.Kb6 Kd7 54.Ka7 Kc8 55.b6 Kd7 56.b7 Ke6 57.b8Q 1-0. ClayPigeons (2225) - Hadiii_a (2400), Rated Bullet game, lichess.org, 2019.

5.a4 Bd7 6.Nf3 c6 7.c4 cb5 8.cb5 0-0 9.Bd3 a6 10.Nc3 d5 11.0-0 Bc8 12.Qb3 Nbd7 13.Ne2 Nc5 14.Qc2 Bd7 15.Bf6 Bf6 16.Bh7 Kh8 17.Rab1 Rc8 18.Bd3 Na4 19.Qa4 ab5 20.Bb5 Ra8 21.Qb3 Bc6 22.d4 Qd6 23.Ng3 g6 24.Bd3 Kg7 25.Qb4 Qb4 26.Rb4 Ra3 27.Bb5 Be7 28.Rbb1 Rfa8 29.h3 Bf6 30.Rfc1 Be7 31.Bc6 bc6 32.Rc6 Ra1 33.Ra1 Ra1 34.Nf1 Bf6 35.g4 g5 36.Kg2 Ra2 37.N1d2 Ra4 38.Nb3 Rc4 39.Nc5 Be7 40.Rc7 Bc5 41.Rc5 Rc5 42.dc5 f6 43.c6 Kf7 44.c7 Ke7 45.c8Q Kd6 46.Nd2 1–0. Abdullaevich (1730) – uktamsaparov, lichess.org, 2015.

5.Nc3 0-0 6.Nf3 c6 7.a4 a6 8.Be2 ab5 (8...Nbd7 9.0-0=) 9.ab5+= Ra1 10.Qa1 Nbd7 11.0-0 e5 12.bc6 (12.Qa7 h6+=) 12...bc6 13.Ba6 (13.Qa7 Qb6 14.Qb6 Nb6+=) 13...Ba6 14.Qa6 Qb6 15.Qb6 Nb6 16.d3 h6 17.Ra1 Ra8 18.Ra8 Na8 19.Na4 Bd8 20.c4 Ba5 (20...Nb6 21.Nb6 Bb6 22.Kf1=) 21.Bc3 (21.c5!? e4 22.de4 Ne4 23.cd6 Nd6 24.Ne5+-) 21...Bc3= 22.Nc3 Nb6 (22...Kf8!?=) 23.Kf1 ½–½. owkenobi – bobbins, gameknot.com, 2019.

5.Be2 a6 6.ba6 Na6 7.Nf3+=.

5.Be2 Nbd7 6.c4 (6.Nf3 0-0=) 6...0-0 7.Nf3 Nb6 (7...a6 8.ba6 b6 9.Nd4=) 8.Qc2 (8.0-0 e5=) 8...Ne8 (8...e5 9.d4 e4 10.Nfd2=) 9.a4+= f5 (9...Nf6 10.0-0+=) 10.0-0 Bf6 (10...a6 11.a5 Nd7 12.d4+=) 11.d4+/– g6 (11...a6 12.a5 Nd7 13.Nc3+/–) 12.Qb3 (12.a5 Nd7+/–) 12...Qe7 (12...Nd7 13.Nc3+/–) 13.a5 Nd7 14.Nc3 Bg7 15.Nd2 (15.Rfd1 f4+/–) 15...Kh8 (15...c5 16.Na4+=) 16.f4 (16.Rfd1 f4+/–) 16...c5+= 17.bc6 bc6 18.Qa4 (18.Qc2 c5 19.Nb3 Rb8+=) 18...c5 19.Nf3 (19.Nb3 Rb8+=) 19...cd4 (19...Rb8 20.Rab1=) 20.Nd4 (20.ed4 Bb7 21.Qd1 Rb8=) 20...Nc5= 21.Qc2 (21.Qa3 Bb7=) 21...Bb7 22.Bf3 (22.Nb3 Nb3 23.Qb3 Nf6=) 22...e5 (22...Bf3 23.Rf3 Nf6 24.Na4+=) 23.Bb7 (23.Nd5 Qh4 24.Nb3 e4 25.Nc5 dc5+=) 23...Qb7= 24.fe5 Be5 (24...de5 25.Nf3 Rc8 26.Nd5=) 25.Nf3 (25.Rab1 Nf6+=) 25...Bg7= 26.Rfb1 (26.Nb5 a6 27.Bg7 Kg7=) 26...Qc6 (26...Nf6 27.Nd5 Nd5 28.Bg7 Qg7 29.cd5=) 27.Nd5+= Ne4 (27...Nf6 28.Bf6 Bf6 29.Nd4+=) 28.Nd4 (28.Bg7 Ng7 29.Nd4 Qd7+=) 28...Qd7= 29.Nf3 (29.Ne2 N8f6=) 29...Rc8 (29...Nc7 30.Qd3=) 30.a6 (30.Bg7 Qg7 31.Nd4 Rf7=) 30...Qf7 (30...Nc7 31.Ra5 Nd5 32.Rd5=) 31.Bg7 Ng7 32.Qe2 Rb8 33.Nd4 Nc5 34.Nb5 Ne8 35.Qb2 Kg8 36.Qd4 Qd7 37.Nb4 Rb6+= 38.Nd5 Ra6 39.Ra6+/– Na6 40.Ra1 Nc5 41.Ra7 Qd8?? 42.Ne7 (42.Ne7 Qe7 43.Re7+-) 1–0. Nyikos,Laszlo – Garms,Ilse, Brandenburg–ch Seniors, 2005.

5.Ne2 0-0=+ 6.Ng3 e5 7.c4 b6 (7...Re8 8.d4=+) 8.Be2 Bb7 9.Bf3 (9.0-0 a6=) 9...Bf3 (9...e4 10.Be2=+) 10.Qf3= Nbd7 11.Nc3 Nc5 12.0-0 Qd7 (12...Nd3 13.Rab1=) 13.d4 ed4 (13...Nd3 14.Ba3 a5 15.Nf5+-) 14.ed4+- Ne6 15.Nce4 (15.d5 Nc5+-) 15...Ne4 (15...d5 16.Nf6 Bf6 17.Qd5+=) 16.Ne4 Ng5 17.Ng5 Bg5 18.d5 f5 19.Qg3 (19.Rfe1 a6 20.a4 Bd2+-) 19...Bf6 20.Bf6 Rf6 21.a4 Raf8 (21...a6 22.Rfe1+=) 22.a5 f4 23.Qf3 Rg6 (23...Re8 24.ab6 ab6 25.Rae1+=) 24.ab6 ab6 25.Ra3 (25.Rfe1 Rg5+-) 25...Qg4 26.Qg4 Rg4 27.Rfa1?? (27.f3 Rg5+-) 27...h5?? (better 27...f3–/+) 28.f3 Rg6 29.Ra8 Rgf6 30.R1a7 (30.R8a7 R6f7+-) 30...R6f7 31.Kf2 g5 32.Rf8 Kf8 33.Ra8 Kg7 34.Re8 Kg6 35.Rg8 Kf6 36.h3 (36.g3 Rg7 37.Rh8 Ke5 38.Re8 Kf6 39.gf4 gf4+=) 36...Kf5 (36...h4 37.Re8=) 37.Re8+= g4 38.Rh8 g3 39.Kf1 (39.Ke2 Re7 40.Kd2 Kg5+=) 39...Kg6?? (better 39...Ke5–/+) 40.Re8+= Kf5 (better 40...Kg5+=) 41.Re4 (41.h4!?+=) 41...h4 (41...Rf8!? 42.Re7 Ra8=+) 42.Ke2 Rg7 (42...Rf8 43.Kd3=) 43.Kd3 (43.Re8 Kf6+=) 43...Rg8= 44.Re7 Ra8 45.Rc7 Ra3 46.Ke2 (46.Kd4 Ra2=) 46...Ra2=+ 47.Kf1 Rf2 48.Kg1 Re2 Threatening mate... how? 49.Kf1 Rf2 (49...Rc2 50.Rh7=+) 50.Kg1–/+ Rc2 Do you see the mate threat? 51.Kf1 Rf2 (51...Ke5 52.Rc6–+) 52.Kg1–/+ Rc2 (52...Ke5 53.Rc6–/+) 53.Kf1=+ Rf2 (53...Ke5 54.Rc6 Rc1 55.Ke2 Rg1–+) 54.Kg1= ½–½. aravind555 (1680) – withanid (1665), lichess.org, 2020.

5.Nf3 b6 6.Be2 Bb7 7.a4 a6 8.c4 a5 9.0-0 Nbd7 10.d4 d5 11.Nbd2 dc4 12.Nc4 h6 13.Nfe5 (13.Ne1 0-0+=) 13...Ne5 14.Ne5 0-0 15.Bf3 Rb8? (better 15...Bf3 16.Qf3 Nd5+=) 16.Bb7+- Rb7 17.Nc6 Qd7 18.Ne7 Qe7 19.Ba3 c5?? (19...Qd7 20.Bf8 Kf8+-) 20.bc6 Qc7 21.cb7 Rd8 (21...Rb8 22.Rc1 Qb7 23.Qd3+-) 22.Qf3 Rd5 (22...Rb8 23.Rfc1 Qd7 24.Rc6+-) 23.e4 Rg5 (23...Rd8 24.Bb2 Ne8 25.d5 Qb7 26.de6 fe6 27.Rab1+-) 24.h4 Ng4 (24...Rg6 25.h5 Rg5+-) 25.e5 f6 26.Bd6 (26.Bd6 Qb7 27.Qb7 Re5 28.de5 Ne5 29.Be5 Kh7 30.Bf6 Kg6 31.Qg7 Kf5 32.Rfe1 Kf4 33.Ra3 Kf5 34.Rf3) 1–0. DEFFM – GuestKQLW, freechess.org, 2019.

5.Nf3 c6 6.a4 a6 (6...Nbd7 7.d4=) 7.c4 (7.Nc3 0-0=) 7...ab5= 8.ab5 Ra1 9.Ba1 Qa5 (9...cb5 10.cb5 e5 11.Qc2=) 10.Nc3+= 0-0 11.Bd3 (11.Be2 Nbd7+=) 11...c5 (11...Nbd7 12.0-0=) 12.0-0+= Qc7 13.Bb2 b6 14.Qc2 Bb7 15.Ne4 Be4 16.Be4 d5? (better 16...Ne4 17.Qe4 Nd7+=) 17.Bf6+- de4 18.Be7 ef3?? (better 18...Qe7 19.Qe4 h6+-) 19.Bf8 fg2 (19...Kf8 20.Qh7 Nd7 21.Ra1+-) 20.Ra1 (worse 20.Kg2 Kf8 21.Qh7 f5+-) 20...Kf8 (20...f5 21.Bc5! bc5 22.Qa4+-) 21.Qh7 Ke7 (21...Nd7 22.Ra8 Ke7 23.Qg7+-) 22.Qg7 Nd7 (22...e5 23.Qg5 Ke6 24.f4+-) 23.Qg5 Nf6 (23...Kd6 24.Qf4 e5 25.Qf7+-) 24.Kg2 Qb7 (24...e5 25.d4! Qc8 26.Qe5 Qe6 27.Ra7 Kf8 28.Qe6 fe6 29.dc5 bc5 30.b6+-) 25.f3 Qd7 (25...Qb8+-) 26.e4 (26.e4 e5 27.Qe5 Qe6 28.Qg5+-) 1–0. GuestXRNB – GuestRQDV, freechess.org, 2020.

5.Nf3 Nbd7 6.d4 0-0 7.Bd3 b6 8.0-0 Bb7 9.Nbd2 c5 10.c4 (10.bc6 Bc6 11.c4 h6+=) 10...cd4 11.ed4 (11.Bd4? e5–+) 11...a6 12.a4 (12.ba6 Ra6 13.h3 Qc7=) 12...h6 (12...ab5 13.ab5 Ra1 14.Qa1=) 13.Qc2 (13.Qe2 Qc7+=) 13...a5 (13...Qc7 14.ba6 Ra6 15.Bc3=) 14.Rfe1 (14.Qd1 Rc8=) 14...Rc8 15.Qb3 d5 16.Ba3 1–0. GuestTHLW – ason, freechess.org, 2019.

5.Nf3 Nbd7 6.d4 a6 7.ba6 b6 8.Bb5=.

5.Nf3 Nbd7 6.d4 b6 7.Be2 Bb7 8.c4 c6 9.a4 c5 10.a5 0-0 (10...a6 11.ab6 ab5 12.Ra8 Ba8 13.cb5=) 11.a6+= Bf3 12.Bf3 Rb8 (12...Rc8 13.Bb7 Rc7 14.d5+=) 13.0-0 Qc7 14.Nd2 cd4 15.ed4 e5 (15...d5!?+=) 16.Re1+- Rfe8 17.Bc6 ed4 18.Bd4 Bf8 19.Qc2 (19.Re8 Ne8 20.Qe2 Nef6+-) 19...Re1+- 20.Re1 Re8 (20...Ne5 21.Bb7+-) 21.Re8+- Ne8 22.Ne4 Nef6 (22...Be7!?+-) 23.Bf6 Nf6 24.Nf6 gf6 25.Qf5 (25.Be4 h6+-) 25...Bg7 26.g3 Qe7 (26...h6 27.Bd5+-) 27.Qc8 Bf8 28.Kg2 h6 29.Qb8 Kg7 (29...h5 30.Bb7+-) 30.Bb7 Qe2 (30...d5 31.Bd5 h5+-) 31.Qa7 Qc4 32.Qb6 (32.Qa8 Qe2 33.a7 d5+-) 32...d5 33.a7 (33.Qc6 Qe4 34.f3 Qe2 35.Kh3 Qf1 36.Kh4=) 33...Bc5? (33...Qe4 34.f3 Qc2 35.Qf2 Qf2 36.Kf2 Bc5 37.Ke2 Ba7 38.Bd5 Kf8+-) 34.Qc5!! Qc5 35.a8Q Qb5 36.Bd5 Qd7 37.h4 h5 38.Qb7 Qb7 (38...Qe8 39.Bf3 Kg6 40.Qb1 f5 41.Qd1+-) 39.Bb7 f5 (39...Kg6+-) 40.Kf3 Kg6 41.Kf4 Kf6 (41...Kh7 42.Kf5 Kg8 43.Bd5+-) 42.Bd5 1–0. GuestTSTG – GuestBTGR, freechess.org, 2018.

5.Nf3 e5 6.c4 b6 (6...e4 7.Nd4+=) 7.d4= Nbd7 (7...e4!? 8.Nfd2 a6=) 8.de5+= de5 9.Ne5 (9.Be5 a6+=) 9...Bb4 10.Ke2 Ne5 (10...Qe7 11.Nc6 Qd6 12.Qd6 Bd6 13.Nc3+/–) 11.Qd8 (11.Be5?! Qe7 12.Qd4 Bg4 13.f3 Bc5+=) 11...Kd8 12.Be5 Be7 (12...a6!?+/–) 13.Nc3+- Be6 (13...Bd7 14.Rd1+-) 14.Kd2 (14.Rd1!? Ke8+-) 14...Rg8 (14...a6 15.Bd3+/–) 15.Be2 Nd7 (15...a6 16.Bf3 Ra7 17.Kd3+/–) 16.Bd4 a5 (16...a6 17.Bf3 Ra7 18.Nd5+-) 17.Bf3 Ra7 18.Bd5 Nf8 (18...Nf6 19.Be6 fe6 20.Rhd1+-) 19.f3 (19.Rhd1 Bd5 20.cd5 Bd6+-) 19...Bd5 (19...Ng6 20.Rhd1+-) 20.Nd5 (20.cd5 Ng6+-) 20...Nd7 (20...Bb4 21.Nb4 ab4 22.Kc2+-) 21.h4 (21.Rhd1 Bd6+-) 21...Ra8 (21...Bb4 22.Nb4 ab4 23.Rhb1+-) 22.f4 (22.Rad1 Bb4 23.Ke2 Bc5+-) 22...Bd6 (22...Bb4 23.Nb4 ab4 24.Rhb1+/–) 23.g4 (23.e4 Re8 24.Rhe1 Nc5+-) 23...Rc8 (23...Bb4 24.Nb4 ab4 25.Rhb1+-) 24.Kc3 (24.e4 c6 25.Nb6 Rb8 26.Nd7 Bf4 27.Kd3 Kd7+-) 24...c5 25.bc6 Rc6 26.Rhb1 Bc5 27.Rb5 f6 28.Rab1 (better is 28.Rd1 Re8 29.Bc5 Rc5 30.Nb6 Re3 31.Kc2+-) 28...Bd4 (28...Re8 29.Kd3 Rce6 30.Kd2+-) 29.Kd4 (29.ed4!? f5+-) 29...Rd6 30.c5 (30.e4 Re8+-) 30...bc5 31.Rc5! Ke8? (31...Nc5 32.Kc5) 32.Ra5 Kf7 33.e4 Re8 (33...Rd8 34.a4+-) 34.Rb7 (34.a4 Rd8+-) 34...Kg8 (34...Rd8 35.e5 fe5 36.fe5+-) 35.Raa7 Rd8 36.e5 (36.a4!? Kf7+-) 36...fe5 37.fe5 Rg6 (37...Ne5 38.Rg7 Kf8 39.Ke5 Rd5 40.Kf4 h6+-) 38.Ne7 Kf7 39.Ng6 Kg6 (39...Ke8 40.Nf4 Nf8 41.Ke4+-) 40.Rd7 Rd7 41.Rd7 (41.Rd7 h5 42.Rg7 Kg7 43.g5+-) 1–0. Dopper,Johan – Bloom,Aad, 1992.

5.f4 Nbd7 6.Nf3 b6 (6...0-0 7.Be2=) 7.Be2 Bb7 8.0-0 0-0 9.c4 Nc5 10.Nc3 Rc8 (10...a6 11.Nd4=) 11.Qe1 a5 12.Qg3 Nfe4?? (better is 12...Qd7=) 13.Ne4+- Be4 (13...f6 14.Nc5 dc5+-) 14.Nd4 (14.Qg7) 14...Qe8?? (14...Bf6 15.Rad1=) 15.Bf3 (15.Nf5 Bg5 16.Qg5 Bf5 17.Qg7) 15...Bf3?? (15...Bf6 16.a3=) 16.Rf3 (16.Nf5 Bg4 17.Qg4 Bg5 18.Qg5 ef5 19.Qg7) 16...Kh8?? (16...Bf6 17.Rb1=) 17.Nc6 (17.Nf5! Bf6 18.Bf6 Rg8 19.Bg7 Rg7 20.Qg7) 17...Rg8+= 18.Qh4?? (better is 18.f5 Ne4 19.Qe1+=) 18...Qf8 (better is 18...Bh4 19.Bd4–+) 19.Rh3 (better is 19.Ne7 Qe7 20.Qe7+-) 19...h6 (19...Bh4 20.Rh4 Nd3 21.Bd4–+) 20.g4 (20.Qh6) 20...Bd8 (better is 20...Bh4 21.Rh4 Kh7–+) 21.g5 (21.Qh6!) 21...Nd7?? (better is 21...Kh7+/–) 22.Qh6 1–0. Lais,Klaus Joerg – Hilpisch,Ralf, Saarland–chC, 1992.

6.c4 a6 7.Nc3=.

6.c4 Ne4 7.Qc2 d5 (7...f5 8.Be2=) 8.Bd3 Nc5 (better is 8...f5!?+=) 9.Bh7+/– Kh8 10.d4 Na4 11.Qa4 Kh7 12.0-0 dc4 (12...Nd7 13.Nbd2+/–) 13.Qc4 (13.Ba3 Kg8+-) 13...Nd7 (13...a6 14.Qa4+/–) 14.a4 Nb6 15.Qd3 f5 (15...Kg8 16.Nc3+-) 16.Ba3 Ba3 17.Ra3 (17.Na3 Na4 18.Nc4+-) 17...Qd5 (17...a6!? 18.Nc3+/–) 18.Rc1 (better is 18.Nbd2+-) 18...Rf7?? (better is 18...Bd7+-) 19.Ng5 Kg6 20.Nf7 Kf7 21.Rc7 (21.a5!? Nd7 22.Rc7 a6+-) 21...Bd7 22.a5 Nc8 23.Qe2 (better is 23.Nd2!? Kf8 24.Rac3 b6+-) 23...Ne7 24.Rc5 Qd6 (24...Rc8 25.Rac3 Rc5 26.Rc5+- (worse is 26.dc5 Qe4 27.Rc1 Qb4+-)) 25.Qh5 (better is 25.Nd2!? Kg8+-) 25...Ng6 (25...Kg8 26.Nc3+-) 26.f4 Rh8 (26...Rc8 27.Rc8 Bc8 28.Rb3+-) 27.Qf3 Nh4 (27...b6 28.ab6 ab6 29.Rc4+-) 28.Qb7 g5 (28...Rb8 29.Qc7 Qc7 30.Rc7+-) 29.Rc7 (29.Nd2!? Ke7 30.fg5 Qb8+-) 29...Rd8 30.fg5 Kg6 (30...f4 31.Qc6 Nf5 32.Ra7+-) 31.Rb3 Kg5 32.Nc3 Ng6 (32...Kf6 33.Qa7 Ng2 34.Kg2+-) 33.Qa7 Ne7 (33...e5 34.d5+-) 34.Qc5 Qc5 35.dc5 Nd5 36.Nd5 ed5 37.a6 d4 38.ed4 Be6 39.Rg3 Kf4 40.a7 1–0. DEFFM – GuestLSXL, freechess.org, 2018.

6.c4 e5 7.d4 e4 8.Nfd2 d5 9.cd5 Qd5 10.Bc4 (10.Qc2!?+=) 10...Qg5+= 11.g3 Bh3 12.a4 (12.Nc3!?=) 12...Qf5 13.Bf1 Bb4 14.Ba3 c5 15.Bb4 cb4 16.Nc4 Bf1 17.Kf1 a6 18.Nbd2 ab5 19.ab5 Ng4 20.f4 Qb5 21.Ke2 Ra1 22.Qa1 Rc8 23.Ke1?? (better is 23.Qa5 Qa5 24.Na5–+) 23...Rc4 24.Nc4 Qc4 (24...Qc4 25.Qb2 Ne3–+) 0–1. Hasler,Ueli – Valverde,Mario (1995), CiF, 2006.

6.d4 c5 7.Bd3 (7.dc5 d5=) 7...cd4 8.ed4 (8.Bd4? e5–+) 8...Nd5 (8...a6 9.a4=) 9.0-0 (9.Qd2 Nf6+=) 9...b6 (9...Nf4 10.Nc3=) 10.Qd2 Bb7 11.c4 Nf6 12.Qc2 (12.Nc3+=) 12...e5 (better 12...Nbd7!?=) 13.de5+- de5 14.Ne5 Bc5 (14...Qc7!?+-) 15.Nd2 Nbd7 (15...Qc7 16.Nb3 Bd6 17.f4+-) 16.Nd7 Qd7 17.Bf6 gf6 18.Bh7 Kh8 (18...Kg7 19.Ne4 Qc7 20.Rad1+-) 19.Bf5 Qc7 (19...Rg8 20.g3 (20.Bd7?? Rg2 21.Kh1 Rg1 22.Kg1 Rg8 23.Qg6 Rg6 24.Bg4 Rg4) 20...Qc7 21.Ne4+-) 20.Qd1 Bf2?? (20...Rg8 21.Ne4 Kg7+-) 21.Rf2 Qc5 (21...Rg8 22.Qh5 Kg7 23.Qh7 Kf8+-) 22.Qh5 Kg7 23.Qh7 1–0. GuestPXGN – GuestQBKZ, freechess.org, 2020.

6.Be2 Nbd7 7.d4 Ne8 (7...a6!?=) 8.0-0+= Nb6 9.c4 g6 (9...Nf6 10.a4+-) 10.a4+- Ng7 11.a5 Nd7 12.Nc3 a6 (12...c5 13.h3+-) 13.Bd3 (13.e4 c5+-) 13...Bf6 (13...Nf5 14.e4 Nh4 15.Nd2+-) 14.Qb3 (14.Ne4 Be7+-) 14...ab5 (14...Nf5 15.Ne4+-) 15.cb5 (worse 15.Qb5 Nf5+=) 15...b6? (better 15...Nf5!?+-) 16.a6+- Be7 17.Na2 Nf6 18.Nb4 Bd7 19.Rfc1 Qe8 (19...Ra7 20.Rc2+-) 20.Nc6 (20.Rc7 Bd8 21.Rc6 Bc6 22.Nc6 Qd7+-) 20...Bc6 21.Rc6 (21.bc6?! Ra7+-) 21...Qd8 22.e4 (22.a7 d5+-) 22...Nge8 (22...Ra7 23.Qc2+-) 23.Qc2 Qc8 (23...Ra7 24.h3+-) 24.Rc1 (better 24.Bc1 Bd8+-) 24...Bd8 (24...Qd7+-) 25.Rb6!! Qd7 (25...cb6 26.Qc8 Pinning (26.Qc8 Deflection; 26.Qc8 Clearance)) 26.Rb7 d5 (26...Qc8 27.b6! Kg7 28.Qc6+-) 27.e5 Nh5 28.b6! Rc8 (28...cb6 29.Rd7 Pinning (29.Rd7 Deflection)) 29.a7 Qe7 30.Rb8 Qd7 31.b7 (31.b7 Rb8 32.ab8Q+-) 1–0. DEFFM – GuestJDJF, freechess.org, 2019.

6.Be2 Ne8 7.0-0 Bf6 8.d4 g6 (8...c6 9.c4+=) 9.Nbd2 Bg7 10.e4 1-0. DEFFM – GuestJDZB, freechess.org, 2021.

5.Nc3 d6 6.d4 (6.Nf3 a6=) 6...e5 (6...a6 7.Nf3=) 7.Nf3 Bg4 (7...ed4 8.Qd4 a6 9.Nd5=) 8.Be2 (8.de5!? Bf3 9.Qf3 de5 10.Rd1+=) 8...Nbd7= 9.h3 (9.0-0 c6=) 9...Bf3 10.Bf3 Re8 (10...Nb6 11.Qd3=) 11.0-0+= c6 (11...ed4 12.Qd4 Ne5 13.Be2+=) 12.a4 a6 (12...Rc8 13.Qd3+=) 13.bc6 (13.Qd3 Qb6 14.Ne2 ed4 15.Bd4 c5 16.Bf6 Bf6=) 13...bc6= 14.de5 (14.Rb1 Rb8=) 14...Ne5 Black fights for the Initiative 15.Be2 Rb8 16.Rb1 Qa5 17.f4 (17.Qe1 Rb4=) 17...Ned7 (17...Rb2 18.Rb2 Qc3 19.fe5 Qb2 20.ef6 Bf6 21.Qd6 Qc2 (21...Re4?! 22.Ba6 Qb6 23.Kh1+=) 22.Ba6 Qa4–+ (22...Qe4?! 23.a5–/+)) 18.Bd3?? (18.Rf3 Nb6+=) 18...Rb4?? (better is 18...Rb2 19.Rb2 Qc3–+) 19.Ba3 (19.Ba1 Rb1 20.Qb1 Nc5+=) 19...Rb1–/+ 20.Nb1 Qa4 21.Kh1 (21.c4 Qd1 22.Rd1 d8–/+) 21...Ne4–+ 22.Qe1 (better is 22.Be4 Qe4 23.Bd6 Bd6 24.Qd6–+) 22...Bf6 23.Be4 (23.c4 d5–+) 23...Re4 24.Qc3 (24.Qf2 c5 25.c3–+) 24...Bc3 25.Nc3 Qc4 26.Rf3 Rf4 (26...Rf4 27.Rf4 Qf4–+) 0–1. Norstroem,K – Thoern,Conny, corr SSKK 3–1352, 1993.

5.d3 c6 6.a4 d6 7.Nf3 cb5 8.ab5 b6 9.g3 Bb7 10.Bg2 Nbd7 11.0-0 Nc5 12.c4 Qc7 13.Qe2 White prepares the advance e5 13...h6 14.e5 de5 15.Be5 Qd7 16.Bf4 (better is 16.d4 Nce4 17.Rd1+=) 16...Qd3 17.Qd3 Nd3 18.Be3 Rfd8 19.Nc3 Nc5 20.Ne5 Bg2 21.Kg2 Nfd7 22.Nc6 Re8 23.Rfd1 (worse is 23.Na7 Bf6 24.Na4 Ba1 25.Nc5 Nc5 26.Ra1 Nd7–/+) 23...Nf6 (better is 23...Bf6!? 24.Ra3 Bc3 25.Rc3 a5–/+) 24.Ra7 (24.Ne7?! Re7 25.Bc5 bc5=) 24...Ra7 25.Na7 Ra8 26.Nc6 Bf8 27.Ne2 Kh7 28.Nf4 g5 29.Nd3 Nfd7 30.Nce5 Rd8?? (better is 30...Kg8+=) 31.Nc5+- Nc5 (31...Ne5 32.Rd8 Be7+-) 32.Rd8 Be7 33.Rb8 1–0. Jokmin,Alex – Vontina,Maria, RN–2010-0-00308, 2010.

5.e5 Nd5 6.c4 Nb6 7.Qc2 d6 8.Bd3 g6 9.ed6 cd6 10.Nf3 d5 11.cd5 Nd5 12.0-0 a6 13.Re1=.

5.e5 Ne4 6.d3 Nc5 7.d4 Na4 8.Bc1 d6 9.Qg4 f5 10.Qf4 de5 11.de5 Bg5 12.Qa4 Bc1 13.Qb4+=.

5.e5 Ne8 6.d4 d6 (6...a6 7.Nf3 (7.a4= f6 8.Bd3 fe5 9.de5 Bb4 10.Nd2 Qg5 11.g3 d6 12.f4 Qd8 13.c3=) 7...f6 8.c4 ab5 9.cb5 b6 10.Bd3 Bb7 11.Nbd2 g6 12.0-0 c6 13.Qb3+=) 7.Nd2 (7.Bd3 a6 8.a4 c5 9.ed6 Qd6 10.Qh5 Nf6 11.Qc5 Qc5 12.dc5 Rd8 13.Nd2=; 7.Qh5 a6 8.Nf3 c6 9.bc6 Nc6 10.Bd3 g6 11.Qh6 Nb4 12.h4 Nd3 13.cd3=) 7...de5 (7...a6 8.Ngf3 de5 9.de5 Bd7 10.a4 c6 11.Bd3 ab5 12.ab5 Ra1 13.Ba1=) 8.de5 c6 (8...a6 9.Qh5 ab5 10.Bb5 Qd5 11.Bd3 f5 12.Ngf3 Ra2 13.Bc4+=) 9.Ngf3 (9.a4 Nd7 10.Qh5 Nc5 11.Ngf3 Nc7 12.Ba3 Nd5 13.Bc4=) 9...Nc7 10.a4 (10.c4 cb5 11.cb5 a6 12.a4 Qd7 13.Qb1=) 10...cb5 (10...a6 11.b6 Nd5 12.a5+= Bb4 13.c4+=; 10...Qd7 11.Bd3 cb5 12.ab5 Nb5 13.Qe2=) 11.ab5+= b6 (11...a6 12.Bd3 Nd7 13.Bd4+=) 12.Be2 (12.Bd4 Bb7 13.Bd3+=) 12...Bb7 13.0-0 Nd7 14.Re1 Nd5 (14...Qc8 15.Qb1=) 15.Ne4+= Nc5 16.Bf1 (16.Qd4 a5 17.ba6 Ba6 18.Ba6 Na6+=) 16...Qc7 (16...Qb8 17.Nc5 Bc5 18.Ng5+=) 17.Nd6 Rfd8 18.Nb7 Qb7 (18...Nb7!? 19.Qe2 Bb4=) 19.Nd4+= Nf4? (better is 19...a6!?+=) 20.g3+- Nd5 21.Bg2 a6? (better is 21...Qc7 22.Qe2 Rdc8+-) 22.c4 ab5 23.cd5 ed5 (23...Ra1 24.Ba1 ed5 25.Nf5+-) 24.Ra8 Qa8 25.e6 (25.e6 fe6 26.Ne6 Ne6 27.Re6+-; 25.Nb5?! Ne6+-) 1–0. Buczinski,Henryk – Gerhardt,Elomar, corr Argentina–200 Anos Br.71, 2010.

5.e5 Ne8 6.Qg4 d5 7.ed6 (7.Nf3 a6=) 7...cd6+= 8.Bd3 Nf6 9.Qg3 e5 10.Nf3?? (better is 10.Ne2+=) 10...e4 (10...Nh5 11.Be5 Ng3 12.hg3 h6–+ (12...de5?! 13.Bh7 Kh8 14.Bf5 Bh4 15.Rh4 Qh4 16.Nh4+=)) 11.Be4 (11.Nd4 ed3 12.Qd3 Nbd7–+) 11...Nh5 12.Ng5 Ng3 13.Bh7 Kh8 14.hg3 Bg5 15.Bd3 Bh6 16.Rh6 ½–½. Gubaidullin,Airat (1675) – Shamsiev,Yury, Ufa RUS, Siamidi Mem, 2011.

5.e5 Ne8 6.Qg4 d6 7.d4 c6 8.a4 de5 9.de5 a6 10.Nc3 ab5 11.ab5 Ra1 12.Ba1 f5 13.Qa4=.

5.Bf6 Bf6 6.d4 b6 7.Nf3 Bb7 8.Bd3 d6 9.0-0 Nd7 10.c4 g6 11.Re1 Bg7 12.Nc3+= Qe7 13.d5?? e5 14.a4 a6 15.a5 ba5 16.Ra5= Nc5 17.Na4 Na4 18.Qa4 ab5= 19.Qb5 Rfb8?? 20.Qa4 Ra5 21.Qa5 Bc8 22.Nd2 Bb7? 23.Rb1 Qd8?? 24.c5?? Bf8? 25.c6 Ba8+/– 26.Qa7 Rb1 27.Bb1 Bh6 28.Nf3 Kg7 29.Bd3 Bc1? 30.Ba6+- Ba3? 31.Bb7 Bc5 32.Qa8 Qa8 33.Ba8 f5 34.Ng5 h6 35.Ne6 Kf6 36.ef5 gf5 37.Nc7 e4 38.Na6 Bb6 39.c7 Bc7 40.Nc7 1–0. gtate (1930) – guerino (2100), net–chess.com, 2005.

5.Nc3 0-0 6.Nf3 d5 (6...a6 7.d4=+) 7.e5 Nfd7 8.Be2 f6 9.ef6 Bf6 10.0-0 c5 11.Re1 b6 (11...Ne5!?=) 12.Bf1 Re8 13.d4 cd4 14.Nd4 Nc5 15.Qd2 e5 16.Nb3 Bb7 17.Nc5 bc5 18.Rad1 e4 19.Ba3 Bd4 20.Nd5 Qd5 21.c3 e3? (better is 21...Rd8+=) 22.fe3+- Be3 (22...Nd7 23.cd4 c4+-) 23.Re3 Re3 (23...Nd7 24.Rd3 Qe5 25.Rd7 Bc8 26.Bc4 Kh8+-) 24.Qe3 (24.Qd5?! Bd5 25.Rd5 Kf7 26.Rc5 Nd7+/–) 24...Qh5 (24...Nd7 25.Rd5 Bd5 26.Bc5 Nc5 27.Qc5 Ba2+-) 25.Qe6 (25…Kh8 26.Rd8 Qe8 27.Re8#) 1–0. kamret (2220) – turborago (1940), GameColony.com, 2003.

5.e5 de5 6.Be5 Nbd7 7.Nf3?? 0-0 8.Qe2 b6 9.g3 Bb7 10.Bg2 Ng4 11.Bf4 Bf6 12.c3 Re8 13.d4 e5–+ 14.de5?? Nge5 15.0-0 Nf3 16.Bf3 Re2 17.Bb7 Rb8 18.Bf3 Re8 19.Nd2 Nc5 20.Rad1 Nd3 21.Ne4 Re4 22.Be4=+ Qe7 23.Bd3 g6 24.a4 Qa3 25.Bc7 Rc8–/+ 26.Bf4 Rc3 27.Be4 Qa4–+ 28.Bc6 Ra3 29.Bh6 Ra1 30.Ra1 Ba1 31.Re1 Bg7?? 32.Re8 (32.Re8 Bf8 33.Rf8#) 1–0. MasterofDisaster – dahummer, Live Game Caissa's Web, 2005.

5.Nf3 0-0 6.Nc3 c5 7.e5 (7.Bd3 Nbd7=) 7...de5 8.Ne5 Qc7 9.Nc4 b6 (9...Nbd7=) 10.h4 (better is 10.Bd3!?+=) 10...Bb7+= 11.Rh3 (11.Ne3 Rd8+=) 11...Nbd7–/+ 12.Rg3 Rad8 13.Bd3 Qf4 (13...Ne5 14.Ne4 Nd3 15.cd3 Be4 16.de4=) 14.Qe2 Rfe8 (14...Qh4 15.Rh3 Qg5 16.f3+=) 15.0-0-0 Bf8 (15...Qh4 16.Qe3+=) 16.Re3 (16.Rh1 e5 17.Qe3 Nh5=) 16...Bg2 17.Rg1 Qh2 18.Qe1 Bb7 19.Reg3 Qh4 20.Ne5 (20.f3 Qf4 21.Ne2 Qh6+-) 20...Qf4 (better is 20...Ne5!? 21.Qe5 g6–+) 21.Ne2+= Qh6 22.Nc6 g6 23.Rh1 (23.Nd8 Rd8 24.Qf1 Nh5+=) 23...Qg7 (23...Nh5!? 24.Re3 Bg7 25.Nd8 Rd8+=) 24.Nf4= e5 25.Nh5 (25.Be5 Ne5 Decoy; 25.Ne5 Bh1 Pinning (25...Bh1 Deflection)) 25...Nh5+= 26.Rh5 Can e5 get defended? 26...Bd6 (better is 26...Ra8+=) 27.Nd8+= Rd8 28.f4 ef4?? (better is 28...Re8=) 29.Bg7 (better is 29.Rg6! hg6 30.Bg7 Kg7 31.Rh7 Kh7 32.Qh4 Kg7 33.Qd8 c4 34.Qd7 Ba3 35.Kd1 cd3 36.Qb7 dc2 37.Kc2 Bb4+-) 29...fg3 30.Bh6 (30.Bb2 gh5 31.Qe3 Kf8 32.Bg7 Kg7 33.Qg5 Kh8 34.Qd8 Kg7+-) 30...gh5? (30...g2 31.Rh3 Ne5+-) 31.Qe3 Kh8 32.Bg7 Kg7 33.Qg5 (33.Qg5 Kf8 34.Qd8 Kg7 35.Bf1+- (35.Qd7?? g2 36.Kb2 g1Q 37.Qd6 Qd4 38.Qd4 cd4–+)) 1–0. Posch,Sandor (1965) – Pais,Nimrod (2005), Szekesfehervar HUN, City Ch, 2014.

5.f4 0-0 6.e5 Nd5 7.g3 (7.Qg4 de5 8.fe5 f5=+) 7...f6 8.c4 Nb4 (better 8...Nb6=+) 9.a3+- N4a6 (9...fe5!? 10.ab4 ef4+-) 10.ba6+- Na6 11.d4 (11.Nf3 de5 12.fe5 Bd7+-) 11...de5 12.de5 (worse 12.fe5 fe5 13.Bg2 ed4 14.Qd4 Qd4 15.Bd4 Nc5+-) 12...Qd1 13.Kd1 fe5 14.Be5 Bd7 15.Ne2 (15.Bg2!? c6+-) 15...Bc6 16.Rg1 Bc5 17.Bd4?? (better 17.Bg2 Rfd8 18.Kc2 Bg1 19.Bc6 bc6 20.Ng1+-) 17...Rad8–+ 18.Bh3 (18.Ra2 e5! 19.Bh3 ed4 20.Nc1–+) 18...Rfe8 (better 18...Rd4 19.Kc2 Rc4 20.Nbc3 Kf7–+) 19.Kc2–/+ Bd4 20.Nd4 Rd4 21.Nd2? (better 21.Kc3 Rd6 22.Bg2–/+) 21...Nc5–+ 22.Rge1 (22.Raf1 Red8 23.Nb1 Rc4 24.Kb2–+) 22...Ne4 (better 22...Ba4 23.Kb1 Rd2–+) 23.Ne4=+ Be4?? (23...Re4 24.Kc3 Kf7=) 24.Kc3?? (better 24.Re4 Re4 25.Kd3 Rf4 26.gf4+-) 24...c5 (better 24...Rd3 25.Kb2 Rd2 26.Kc3 Rh2 27.Re4 Rh3–+) 25.Re3= Kf7 26.Rae1 Bf5?? (better 26...Bc6 27.Re5 Rd6+=) 27.Bf5+- (27.Bf5 Rd6 28.Bh7+-) 1–0. retiponziani (1875) – Paul_the_great (1925), ChessWorld.net, 2011.

5.f4 Ne4 6.Bg7 Rg8 7.Bb2–/+.

5.Qg4? Bf6–/+ 6.c3 d5 7.g3 0-0 8.Bg2 Nd6 9.Na3 e5 10.Qe2 c6 11.Bh3 Bh3 12.Nh3 cb5 13.Nb5 Nc4 14.d3 Nb2 15.Qb2 Qd7 16.Ng1 Nc6 17.Ne2 a6 18.Na3 b5 19.Nc2 Rac8 20.0-0 d4 21.cd4 Rfd8 22.Qb3 Nd4 23.Ncd4 ed4 24.Rab1 Qg4 25.f3 Qh3 26.Nf4 Qf5 27.Rbc1 Rc1 28.Rc1 Qe5 29.Ng2 g6 30.Re1 Qd5 31.Re8 Kg7 32.Rd8 Qd8 33.a4 Qd7 34.ab5 Qb5 35.Qb5 ab5 36.Ne1 b4 37.Nc2 Be7 38.Nd4? Bc5 39.Kf1 Bd4 40.Ke2 b3 41.Kd2 f5 42.h3 Kf6 43.g4 Ke5 (43...Ke5 44.Kd1 b2–+) 0–1. super knight – yaunootz, internet, 2006.

5.Bg7 Rg8 6.Bb2=+.

5.c3 d5 6.c4 dc4 7.Qa4 c5 8.Qc4 b6 9.g3 Bb7 10.Bg2 Nbd7 11.0-0 Qc7 12.d4 Rac8 13.Nbd2 Rfd8 14.Qa4 Bd5 15.Rfe1 cd4 16.Nd4 Bg2 17.Kg2 Nc5 (17...Nc5 18.Qc2 a6=+; 17...Qb7 18.N2f3 Qe4 19.Qa7–/+) 0–1. uno (1870) – mpower64 (1985), ICC, 2003.

5.Nc3 b6 6.e4 Bb7 7.Bc4 (better is 7.Bd3!?=) 7...Ne4–/+ 8.0-0 Nc3 9.Bc3 d5 10.Bb3 Nd7 11.a4 Nf6 12.Bb2 c5 13.c4 d4 14.Re1 Bd6 15.Re2? (better is 15.Ne5!?–+) 15...Qc7 16.h3 Rae8 17.Qc2? (17.Re1 Bf4–+) 17...e5 18.Rae1? (18.d3 Bf3 19.gf3 Qb7–+) 18...e4 (better is 18...d3!? 19.Qd3 e4 20.Qc3 ef3 21.gf3–+) 19.Nh4 (19.Nd4 cd4 20.Bd4–+) 19...d3 (19...d3 20.Qb1 de2 21.Bf6 gf6–+) 0–1. Jokmin,Alex – Vontina,Maria, RN–2009–0-00235, 2009.

5.Nc3 b6 6.e4 d6 7.d4 a6 8.a4 Bb7 9.Bd3 Re8 10.0-0 Bf8 11.Qe2 e5 12.de5 de5 13.Rfd1 Nh5 14.ba6 Nf4 15.ab7 Ne2 16.Be2 Ra7 17.Rd8 Rd8 18.Nd5 Rb7 19.Rd1 Re8 20.Ne5 c6 21.Ne3 Ra7 22.Bc4 Bc5 23.Nf5 Bf8 24.Rd3 g6 25.Ng4 1–0. aspasio – Fallen_Star, ICC, 1999.

5.Nc3 d5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.Nc3).

5.c4 a6 6.Nc3 c6 7.e4 cb5 8.e5= Ne8 9.cb5 ab5 10.Bb5 Nc6 11.0-0 Nc7 12.Be2 d5 13.Qc2 d4 14.Nb5+= Nb4? 15.Qc7+- d3 16.Bd1 1–0. wiking – jfk, internet, 2010.

5.c4 c5 6.e3 d5 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4 c5).

5.c4 c6 6.a4 a6 7.g3 d5 8.Na3 Bd7 9.d3 cb5 10.ab5 ab5 11.Nb5=+ Ra1 12.Qa1 Bb5 13.cb5 b6 14.Bg2= Nbd7 15.0-0 Nc5 16.Ne5+= Nb3 17.Qa7 Na5 18.Bd4+/– Bc5 19.Bc5 Nb3?? 20.Bb6 Qc8 21.Be3 Qc3 22.Nf3 e5 23.d4 ed4 24.Bd4 Nd4 25.Nd4 Ne4 26.Be4 de4 27.e3 Rc8 28.b6 1–0. TeaCzar – retiponziani, ChessWorld.net, 2010.

5.c4 d5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 0-0 6.c4).

5.c4 Ne4 6.Qc2 f5 (6...d5 7.e3=) 7.e3 (7.Nc3 Nc3 8.Qc3 Bf6=) 7...Bf6 (7...Nf6 8.Be2=) 8.d4 (8.d3 Bb2 9.Qb2 Nf6=) 8...b6 9.Bd3 Bb7 10.0-0 a6 (10...c5 11.Nfd2 Nd2 12.Qd2=) 11.a4 (11.Rc1 d6=) 11...ab5 (11...c5 12.Nbd2 Nd2 13.Nd2 cd4 14.ed4=) 12.ab5 Ra1 13.Ba1 Qe8 14.Nbd2 Qg6 15.Be4 fe4 16.Ne5 Qe8 (16...Qh5 17.Qa4 Qe8 18.Ng4=) 17.Ne4 (17.c5!?=) 17...Be5+= 18.de5 Qg6 19.f3 Rf3 20.Nf6 (20.Rf3 Be4 21.Qf2 Bf3 22.Qf3 Qd3+=) 20...Kh8 21.Qg6 Rf1 (21...hg6?? 22.gf3 (22.Rf3?! Bf3 23.Ne8 Be2+-) 22...gf6 23.ef6+-) 22.Kf1 hg6 23.Ne8 1–0. DEFFM – GuestTSGJ, freechess.org, 2018.

5.e3 (--> 4.e3 0-0 5.Nf3).

5.e3 b6 6.Be2 Bb7 7.c4 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 Be7 6.c4 0-0 7.Be2).

5.g3 b6 6.Bg2 Bb7 7.0-0 d5 8.e3 c6 9.a4 c5 10.c3 Nbd7 11.d4. mic (2130) – kostaspetidis (2105), net–chess.com, 2008.

5.g3 c6 6.a4 d5 7.Bg2 cb5 (7...Bd7 8.Nc3+=) 8.ab5 Qb6 (8...Bd7 9.Na3+=) 9.Na3 (9.Ba3 Ne4 10.0-0 Bf6=) 9...Ne4 (9...Bd7 10.Bd4 Bc5 11.Bc5 Qc5 12.Qb1=) 10.0-0= Nd6 (10...Bc5 11.d4 Bb4 12.Qd3=) 11.Bd4 Qd8 12.d3 b6 (12...Qc7 13.c4=) 13.c4+= Bb7 (13...dc4 14.Ne5 Bb7 15.Bb7 Nb7 16.dc4=) 14.Qb1 (14.Qb3 dc4 15.Nc4 Nf5+=) 14...dc4 15.Nc4 Nd7 (15...Nf5 16.Bc3+=) 16.Rc1 Nc4 17.Rc4 Bc5 18.Qb2 Bd4 19.Rd4 Qf6 20.Rb4 Nc5 (20...Rfc8!?+=) 21.Qf6+/– gf6 22.Nd4 (22.d4 Ne4+/–) 22...Bg2+= 23.Kg2 Rfc8 24.Nc6 Rc7 25.d4 (25.Rg4 Kf8 26.d4 f5 27.dc5 fg4 28.cb6 Rb7 29.Ra7 Rab8+-) 25...Ne4+= 26.Rba4 a7 seems the pivot of the position (26.Rc1 a5 27.ba6 Ra6+=) 26...a5= 27.R1a3 Nd6 28.Rb3 Nb5 29.Na5 (29.e4 Rc6 30.Rb5 Rd6+=) 29...Nd4 (29...ba5 30.Rb5 Rc2 31.Kf3+- (31.Rba5?! Ra5 32.Ra5 Re2+=; 31.Raa5?! Ra5 32.Ra5 Re2+=)) 30.Rb6 Ne2 31.Rc4 Rc4 32.Nc4 Nc3 (32...Rd8 33.h3+=) 33.Rb7 (33.Nd6 Rd8+=) 33...Rd8 34.Rc7 (34.h3 Kg7+=) 34...Nb5 (34...Nd5 35.Rb7–/+) 35.Rb7+= Nd4 36.Ne3 (36.f4 Kg7+=) 36...Kg7–/+ 37.h4 h5 (37...f5 38.Nc4–/+) 38.Ra7 (38.g4 hg4 39.Ng4 Rh8–+) 38...Kg6 (38...e5 39.g4–/+) 39.Kh3 f5 40.Kg2 (40.Nc4 Kf6–/+) 40...Nc6 (40...e5 41.Nc4 f6 42.Ra6–/+) 41.Rc7 (41.Rb7 Ne5–/+) 41...Ne5 42.Nc4 Nd3 43.f4 f6 44.Rc6 Rd4 45.Nd6 (45.Kf3 Nb4 46.Rc7 Nd5–/+) 45...Nb4 46.Rb6 Nd5 47.Ra6 Rd2 48.Kf3 Rd3 (48...e5 49.fe5 Nb4 50.Rb6=) 49.Kf2 Nc3 50.Rc6 (50.Nc4 Ne4 51.Ke1 Rc3–+) 50...Kg7 (50...Rd6 51.Rc3 e5 52.Ke3–/+) 51.Kg2 (51.Rc7 Kh6 52.Nf7 Kg6 53.Nh8 Kh6 54.Nf7 Kg6 55.Nh8 Kh6 56.Nf7=) 51...Kf8 (51...Ne2–/+) 52.Nf5? (52.Kf2!?+=) 52...ef5–/+ 53.Rf6 Kg7 (53...Ke7 54.Rf5 Rd5 55.Rd5 Nd5 56.Kf3–+) 54.Rf5–/+ Rd5 55.Rg5 Kh6 (better is 55...Rg5!? 56.hg5 Kg6–/+) 56.g4= White prepares the advance f5 56...Rd2 57.Kf3 (57.Kh3 Rd3 58.Kh2 hg4 59.Rg4 Nd5=) 57...Rd3 58.Kg2 (58.Kf2 hg4 59.Rg4 Kh5+=) 58...hg4+= 59.Rg4 Nd5 60.f5?? (better is 60.Kh2+=) 60...Ne3–+ (60...Ne3 61.Kf3 Ng4 62.Kg4 Rd4 63.Kg3 Kh5–+) 0–1. Carzolio,Luigi (2040) – Mrdja,Milan (2380), Genova open Ducale, 2003.

5.g3 d5 6.Bd4=+.

5.a4 ab5 6.ab5 Ra1 7.Ba1 c6 8.c4 cb5 9.cb5 Qa5 10.Nc3 d5 11.e3 Bb4 12.Be2 Bd7 13.0-0 0-0 14.Qb3 Bc3 15.Bc3+/– Qd8 16.Ra1 Bc8 17.Bb4 Re8 18.d4 Nbd7 19.Rc1 Nb6 20.Ba5 Qd6 21.Ne5 Ne4 22.f3 Nf6 23.Nd3 Nc4 24.Bb4 Qb6 25.Bc5 Qa5 26.e4 Nd7 27.Nf4?? b6?? 28.Bb4+= Qb5 29.Bd3 Qa6 30.ed5+/– b5 31.de6 fe6 32.Bc4 bc4 33.Qc4 Qc4 34.Rc4 Nb6 35.Rc6 Nd5 36.Bd2 Nf4 37.Bf4 Bd7 38.Rd6 Bb5 39.Kf2 Kf7 40.Ke3 h6 41.h4 Bc4 42.g4 Bd5 43.h5 Ra8 44.Be5 Ra3 45.Kd2 Ra7 46.Ke2 Ra2 47.Kd3 Ra7 48.f4 Bf3 49.g5 Bh5 50.gh6 Bg6 51.Kc4 gh6 ½–½. CountFromHolland – bob19, playchess.de, 2003.

5.a4 ab5 6.ab5 Ra1 7.Ba1 d5 8.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 a6 5.a4 ab5 6.ab5 Ra1 7.Ba1 Be7 8.Nf3).

5.c4 0-0 6.Nc3 d5 7.e3 dc4 8.Bc4 ab5 9.Bb5 Bd7 10.a4 Na6 11.0-0 Nc5 12.d4 Bb5 13.ab5 Ra1 14.Qa1 Nce4 15.Ne4 Ne4 16.d5 Bf6 17.de6 fe6 18.Bf6 Qf6 19.Qd4 Qd4 20.Nd4 Rf6 21.f4 Nd6 22.Rc1 Rf7 23.Rc5 Re7 24.Kf1 Kf7 25.Ke2 Kf6 26.g4 h6 27.h4 White intends g5 27...e5 28.g5 hg5 29.hg5 Kg6 30.fe5 Ne4 31.Rc1 Kg5 32.Rg1 Kh5 33.e6 g5 (better is 33...g6=) 34.Nf5+- Rh7 35.e7 Nf6 36.Rh1 Kg6 37.Rh7 Kh7 38.b6! cb6 39.Nd6 b5 40.e8Q Ne8 41.Ne8 b4 42.Nd6 g4 43.Nc4 (43.Nb7?? b3 44.Kd3 g3–+) 43...Kg6 44.Nd2 Kf5 45.Kf2 b5 46.Ke2 Ke5 47.Nf1 (better is 47.Kf1!?+/–) 47...b3= 48.Kd3 b2 49.Kc2 (better is 49.Nd2!?=) 49...Ke4–/+ 50.Kb2 ½–½. Matveenko,Yury (2150) – Kutliev,Rustam (1830), Voronezh FIDE Open, 2011. (=1.Nf3 Nf6 2.b4 e6 3.b5 Be7 4.Bb2 a6)

5.e3 ab5 6.Bb5 0-0 7.0-0 b6 8.a4 Bb7 9.d4 c5 10.dc5 bc5 11.Nbd2 Nc6 12.Ne5 Ne5 13.Be5 d5 14.Qf3 Nd7 15.Bf4 Nf6 16.Rfd1 Ba6 17.e4 Bb5 18.ab5 Ra1 19.Ra1 Qb6 20.c4 dc4 21.Rb1 Qb7 22.Be5 Rd8 23.Nc4 Qe4? 24.Qe4+- Ne4 25.b6 Bh4 26.b7 (26.b7 Bf2 27.Kf1+-) 1–0. mrkt – skorpion_77, internet, 2006.

5.e3 ab5 6.Bb5 0-0 7.0-0 c6 8.Be2 b5 9.c4 bc4 10.Bc4 d5 11.Bb3 Ba6 12.d3 Nbd7 13.a4 e5 (better is 13...Qb8!? 14.Ba3 Nc5=) 14.Ne5+= Ne5 15.Be5 Nd7 16.Bc3 Nc5 17.Bc2 Bf6 18.Bf6 Qf6 19.Ra3 Rab8 20.a5 (20.Qd2 Qd6+/–) 20...Rb2+= 21.Nd2 Rfb8 (21...Qh4 22.f4+=) 22.Re1 Qd6 23.d4 Ne6 (23...Ne4 24.Rb3 R8b3 25.Nb3+=) 24.Ra1 g6 (24...c5 25.Nf3+/–) 25.Nf3 Qb4 (25...c5 26.dc5 Nc5 27.e4+/–) 26.Ne5+- Qc3 (26...Qd6+-) 27.Rc1 Bb5? (27...Qa3 28.Nc6 Rc8+-) 28.Bg6 Qe1 29.Qe1 hg6 30.Nc6 Bc6 31.Rc6 Rb1 (31...Ra2 32.a6+-) 32.Rc1 (32.Rc1 R1b5 33.Ra1+-) 1–0. Bonetti,Shane – RUSH7, ICC, 2002.

5.e3 Bb7 (--> 3.b5 b6 4.e3 Bb7 5.Nf3 Be7).

5.e3 Bb7 6.Be2 0-0 7.0-0 c5 8.c4 d5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5).

5.a4 0-0 6.e3 cb5 (6...d5 7.Nc3=) 7.ab5= b6 (7...d5 8.d4=) 8.Be2 (8.Bd3 d5+=) 8...Bb7 9.0-0 d5 (9...a5 10.d4=) 10.d4 a6 11.ba6 Ba6 12.Ne5 (12.c4 dc4 13.Bc4 Bc4 14.Ra8 Bf1 15.Qf1 Qd5+=) 12...Be2= 13.Qe2 Ra1 14.Ba1 Nfd7 15.f4 Qc7 16.Nc3 Ne5 17.fe5 h6 (17...Nc6 18.Bb2=) 18.e4+= Bb4 (18...Nc6 19.Nb5 Qc8 20.Nd6 Bd6 21.ed6 de4 22.Qe4=) 19.Nb5 Qc4 (19...Qc6 20.ed5 ed5 21.Bb2+=) 20.Qc4+/– dc4 21.Rb1 Ba5 (21...Be7 22.Bc3+/–) 22.Nd6 Nd7 23.Nc4 (23.h3 h5+/–) 23...Rc8 24.Na5 ba5 25.c3 a4 (25...f6!?+/–) 26.Rb7+- Rb8 27.Rb8 Nb8 28.c4 (28.Bb2 Nd7 29.Kf2 Kf8+-) 28...Kf8 (28...Nd7 29.Kf2+-) 29.Kf2 Na6 (better is 29...a3!?+-) 30.Bb2 Ke8 31.Ba3 (31.Ke3 h5+-) 31...Kd7 (31...Nb8 32.Ke3 Nc6 33.Kd3+-) 32.Ke3 Kc6 (32...h5 33.d5+-) 33.d5 Kd7 (33...Kc7 34.Kd4+-) 34.Kd4 Nc7 (34...Kc7 35.c5+-) 35.Kc5 f6 (35...h5+-) 36.ef6 gf6 37.g4 Ne8 38.Kb5 Ng7 (38...ed5 39.ed5 f5 40.gf5+-) 39.Ka4 h5 (39...Ne8+-) 40.Bf8 Ne8 41.gh5 f5 42.h6 (better is 42.e5 f4+-) 42...Nf6 43.de6 Ke6 44.ef5 Kf5 45.Bg7 Nh7 46.Kb5 Ke6 47.Kb6 Kd6 48.c5 Kd7 49.Kb7 Ng5 50.h4 (50.c6 Ke6 51.c7 Kf5 52.c8Q Kf4 53.h4 Ne4 54.Qc7 Kf3 55.h7 Kg2 56.h8Q Kg1 57.Bd4 Kg2 58.Qc2 Kf3 59.Qh5 Kf4 60.Be5 Ke3 61.Qhe2) 50...Nh7 51.c6 Kd8 (51...Ke6 52.c7 Nf6 53.Bf6 Kf5 54.c8Q Kf4 55.Qc4 Ke3 56.h7 Kf3 57.h8Q Kf2 58.Qg7 Kf3 59.Qgg4 Kf2 60.Qce2) 52.c7 Ke7 (52...Kd7 53.c8Q Ke7 54.Kc6 Kf7 55.h5 Nf8 56.Qf8 Ke6 57.Qf6) 53.c8Q Kf7 54.Qf5 Kg8 (54...Nf6 55.Bf6 Kg8 56.Qd7 Kf8 57.Kc6 Kg8 58.Qg7) 55.Qe6 (55.Qd5) 1–0. Silva,J Rossi Da (1805) – Arantes,F A, Brazil Telecom Sesc Open, 2016.

5.a4 a6 6.e3 ab5 7.ab5 Ra1 8.Ba1 cb5 9.Bb5 Na6 10.0-0 Qa5 11.Nc3 Bb4 (11...0-0 12.Qb1+=) 12.Bd3 Nc5 13.Be2 Nce4 (13...d5!?+=) 14.Ne4+- Ne4 15.Bg7 Rg8 16.Bd4 Nd2 17.Nd2 Bd2 18.Bd3 e5 (18...Qg5 19.g3 Bb4 20.Bh7+-) 19.Be5! Qe5 Theme: Deflection from d2 20.Qd2 b5 21.Bh7 Rg7 (21...Rh8 22.Qd3+-) 22.f4 Qh5 (22...Qe6 23.Qc3 Rh7 24.Qc8 Ke7 25.Qc5 d6 26.Qg5 f6 27.Qb5 Qe3 28.Kh1+-) 23.Be4 Qg4 (23...Rg8 24.Qc3 Ke7 25.f5+-) 24.Qc3 Kd8 25.Bf3 Qg6 26.Ra1 Qb6 (26...b4 27.Qc5 Ba6 28.Qb4 Rg8 29.Qa5 Ke7 30.Qa3 Qd6 31.Qd6 Kd6 32.Ra6 Ke7+-) 27.Qg7 (27.Qg7 Qe3 28.Kf1+-) 1–0. DEFFM – GuestFYLF, freechess.org, 2020.

5.a4 d5 6.e3 (--> 1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 Be7 5.Nf3 c6 6.a4).

5.Nc3 0-0 6.bc6 (6.e4 d6=) 6...bc6 (6...Nc6 7.Nb5=+) 7.Rb1 (7.e4 d5 8.e5 Ng4=) 7...Ba6 8.d3 d6 (8...d5 9.e3=+) 9.Qd2 Nbd7 10.e4 e5 11.Be2 (11.Nh4 Ne4 12.Ne4 Bh4 13.Nd6 Rb8=+) 11...Rb8 12.0-0 c5 (12...d5 13.d4 Be2 14.Qe2=) 13.Rfd1 (13.Nh4 Ne4 14.de4 Be2 15.Ne2 Bh4 16.Qd6 Rb6=) 13...Nb6= 14.a3 Qd7 (14...Bc8 15.Bc1=) 15.Ng5 (15.Nh4 Ne4 16.de4 Be2 17.Qe2 Bh4=) 15...h6 (15...Rb7 16.f4=) 16.Nh3 Qc6 17.f4 Rfd8 18.Nf2 c4 19.Na2 d5 (19...Bb7!?+=) 20.fe5+/– Ne8 21.Nb4 Bb4 22.ab4 Nc7 23.Qf4 c3 24.Bc1 Ne6 25.Qe3 Bb5 26.Rf1 d4 27.Qg3 Kf8 28.Bh5 Rb7 29.Nh3 Ba4 30.Rf2 Qe8 31.Nf4 Ng5 32.Nd5 Nd5 33.Bg5 Rdd7 34.ed5 Rd5 35.Bf3 Bc6 36.Bd5 Bd5 37.Bc1 Be6 38.Qh4 Qe7 39.Qd4 Rd7 40.Qc3 Rc7 41.Qd4 Rd7 42.Qe4 Rb7 43.Qh7 Ke8 44.Bd2 Qf8 45.c4 a6 46.Ra1 Ra7 (46...Rb6 47.b5! Bc8 48.Be3+-) 1–0. orane (1935) – rumrunner, Caissa.com, 2003.

5.c4 a6 6.a4 0-0 7.Nc3 a5 (7...d5!?=) 8.e3+= d5 9.Be2 Nbd7 10.d4 (10.0-0 Nb6 11.cd5 ed5+=) 10...dc4 (10...cb5 11.cb5 b6 12.0-0=) 11.Bc4 Nb6 12.Bb3 (12.Bd3 cb5 13.Bb5 Bd7=) 12...Nbd5= 13.bc6 (13.0-0!?=) 13...bc6=+ 14.0-0 Nc3 (14...Ba6 15.Re1=+) 15.Bc3 Nd5 (15...Ba6 16.Re1=) 16.Bd2 (16.Qd2 Bb7+=) 16...Ba6= 17.Re1 Nb4 18.Bc2 (18.Ne5 Bf6=) 18...Nc2 (18...c5 19.dc5 Bc5 20.Rc1=+) 19.Qc2= Rc8 (19...c5 20.Rac1=) 20.Qe4 Qd5 (20...c5 21.Rec1=) 21.Qd5+= cd5 22.Ba5 Rc2 23.g3 (23.Reb1 Rfc8+=) 23...Rfc8 (23...Ra8 24.Bd2=) 24.Bd2 (24.Reb1 g5=) 24...f6 (24...g5 25.Ba5=+) 25.a5 (25.Rec1 g5 26.h3 h5=) 25...Rb8 (25...g5!? 26.h3 h5=) 26.Rec1= Rc1 27.Rc1 Bc4 28.Bc3 Bb4 (better 28...Kf7!?=) 29.Rb1 (29.Nd2 Be2 30.Bb4 Rb4+-) 29…Re8 1–0. Stolzenwald,K (1670) – Reuther,G, VMCG Open B, 2017.

5.c4 cb5 6.cb5 d5 7.e3 0-0 (7...Nbd7 8.Qc1=) 8.Be2 (8.Qc2 h6=) 8...Nbd7 (8...Bd7 9.Ne5=) 9.a4 Ne4 10.Nc3 f5 (10...Ndc5 11.Ne4 de4 12.Ng1=) 11.0-0 Ndf6 12.Ne5 A comfortable square for the white knight 12...Nd7 ½–½. Krooss,Dietmar – Zimmermann,Manfred, Schleswig Holstein–ch B (9), 2002.

5.e3 b6 6.a4 0-0 7.c4 c5 8.Be2 Bb7 9.0-0 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4).

5.e3 b6 6.a4 0-0 7.c4 c5 8.Be2 Bb7 9.0-0 Nbd7 10.cd5 (--> 1.b4 e6 2.Bb2 Nf6 3.b5 b6 4.e3 Bb7 5.Nf3 c5 6.c4 Be7 7.Be2 0-0 8.0-0 d5 9.a4 Nbd7 10.cd5).

5.e3 c6 6.a4 (--> 3.b5 c6 4.a4 d5 5.e3 Be7 6.Nf3).

5.Nc3 0-0 6.a4 a6 7.e3 Nbd7 8.Be2 c5 (8...Nc5 9.0-0=) 9.0-0 Qc7 10.a5 ab5 11.Nb5 Qc6 12.c4 b6 13.ab6 Nb6 (13...Ra1 14.Ba1 Bb7 15.Qb3=) 14.Ra8+- Na8 15.Na7 Qb6 16.Nc8 Rc8 17.Bc3 Nc7 18.Qb1 Rb8 19.Qb6 Rb6 20.Ra1 Rb8 (20...Ne4 21.Ba5 Rb7 22.d3+=) 21.Bd3 e5 22.Ng5 h6 23.Ne4 Ne4 24.Be4 g6 (24...Bd8 25.Ra7+-) 25.Ra7 Bd8 26.g4 Ne8 27.Bd5 Nc7 28.Bc6 Ne6 29.Be4 Bh4 30.Ra6 Be7 31.Kg2 Kf8 32.h3 Nc7 33.Ra7 Ne6 34.Kg3 Bd8 35.h4 Kg8 (35...Bf6!? 36.h5 gh5 37.gh5+-) 36.Rd7 Nf8? (better 36...Rb6+-) 37.Rd6 Be7 38.Ra6 f6 (38...Rd8+-) 39.Bd5 Kh8 (39...Kg7 40.Ra7 Re8 41.g5 hg5 42.hg5+-) 40.g5! hg5 (40...fg5 41.Be5 Double attack (41.Be5 Deflection); 40...hg5 41.hg5 Combination) 41.hg5 fg5 (41...Bd8+-) 42.Be5 Kh7 (42...Bf6 43.Bf6 Kh7 44.Ra1 Ne6 45.Rh1 Kg8 46.Be6 Kf8 47.Rh8) 43.Ra1 (43.Ra1 Bf6 44.Bf6 Ne6 45.Rh1 Kg8 46.Be6 Kf8 47.Rh8) 1–0. pcmvr – jromero, net–chess.com, 2019.

5.c4 0-0 6.e3 a6 7.a4 e5 8.Be2 e4 9.Nd4 d5 10.0-0 dc4 11.Bc4 ab5 12.ab5 Ra1 13.Ba1 Nbd7 14.Nf5 Bc5 15.d4 (15.d4 Ba7 16.Be2=). pumpkin (2305) – whaigh (2100), net–chess.com, 2006.

5.e3 Bd7 6.a4 c6 7.Be2 0-0 8.0-0 Nd5 (8...e5 9.Nc3=) 9.d4 Nb6 10.c4 d5 11.c5 Nc4 12.Bc4 dc4 13.Na3 cb5 (13...b6 14.Ne5 bc5 15.dc5 Bc5 16.Qg4+/-) 14.ab5 (14.Nb5?! b6=) 14...a6 15.ba6 ba6 16.Ne5 Bf6 17.Nd7 Qd7 18.Nc4 Nc6? (better 18...Qc6+-) 19.Nb6 Qd5 (19...Qc7 20.Na8 Ra8+-) 20.Nd5 ed5 21.Qb3 Rfd8 22.Qb7 Rdb8 (22...Ne7 23.c6 a5 24.c7+-) 23.Qc6 Rb2 24.Qa8 (24.Qa8 Rb8 25.Qb8 Bd8 26.Qd8) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.a4 a6 5.e3 ab5 6.ab5 Ra1 7.Ba1 Bg7 8.c4 0-0 9.Nf3 Ne8 (better 9...d5=) 10.Be2 (better 10.Bg7 Kg7 11.d4+=) 10...Ba1–/+ 11.d4 c5 (11...d6 12.Qa4 Bd4 13.ed4=+) 12.Qa4=+ Bb2 13.0-0? (better 13.Qa2!? Bd4 14.ed4 cd4 15.Qa7=+) 13...cd4–+ 14.ed4 Qf6 (14...e5 15.Qa8 e4 16.Nfd2–/+) 15.Rd1 (15.Qa8 Qf4 16.g3 Qc7=+) 15...d6 (better 15...e5 16.Qa8 e4–+) 16.Qb3 Bd4 17.Rd4 e5 18.Rd1 Nc7 (18...Nd7!?=) 19.Nc3+= White gets the initiative 19...Rd8 20.Ne4 Attacking the backward pawn on d6 (20.b6 Ne6 21.Nd5 Qg7+=) 20...Qe7= 21.Qb4 Increases the pressure on the backward pawn 21...b6 (21...Ne8!?=) 22.Rd6+= (worse 22.Nd6 e4 23.Ne1 Ne8=) 22...Rd6 23.Qd6 Qd6 24.Nd6 Be6 (better 24...Bg4!?+=) 25.Ne5+- Kg7 26.f4 Nd7? (26...Kf6 27.Kf2+-) 27.Nc6 (better 27.Nd7 Bd7 28.c5 Nb5 29.Bb5 (29.Nb5?! bc5 30.Nc7 Be6+-) 29...Bb5 30.cb6+-) 27...Nf6 (27...Nc5 28.Kf2+-) 28.Kf2 (28.c5 bc5 29.b6 Ncd5 30.Ne8 Kf8 31.Nf6 Nf6+-) 28...Na8 (28...Nce8 29.Ne8 Ne8 30.Ne7+-) 29.Ke3 Bg4 (29...Nc7 30.Kd4+-) 30.Bd3 Be6 31.h3 h6 (31...Nc7 32.g4 h5 33.gh5 Nh5 34.h4+-) 32.Nd8 Nd7 (32...Nc7 33.g4 h5 34.f5 hg4 35.fe6 (35.Ne6?! fe6 36.hg4 Ng4 37.Kf4 Nf2+=) 35...gh3 36.Kf3 (36.N6f7?? h2–+; 36.N8f7?? h2–+; 36.ef7?! h2 37.Ne8 Nce8 38.fe8N Kf8 39.Nf6 h1Q=) 36...Ne6 37.Ne6 fe6 38.Bf1+-) 33.Ne6 (better 33.g4!? Nc5+-) 33...fe6 34.Be4 Nc7 35.Bc6 Nc5 (35...Nb8+-) 36.Nc8 Na4 37.Kd4 (37.Be4 g5+-) 37...Kf7 38.Nd6 (38.Be4 Ke8 39.Bg6 Kd7+-) 38...Ke7 (38...Kf6 39.g4+-) 39.Ne4 (39.Ke5!? g5 40.f5 ef5 41.Nf5 Kd8 42.Nh6 Nb2+-) 39...h5 40.Ng5 Nb2 (40...Kf6 41.Nf3+-) 41.Be4 Na4 (41...Kf6 42.Bc2 e5 43.Kc3 (43.fe5?! Kg5 44.Kc3 Nc4 45.Kc4 h4+-) 43...Nc4 44.Ne4 Kf5 45.Kc4 Kf4 46.Nf6+-) 42.Bg6 Nc5 (42...Kf6 43.Bh5 e5 44.Ke3 ef4 45.Kf4+-) 43.Bh5 Kd6 44.Ne4 Ne4 45.Ke4 Ke7 (45...Kc5 46.Ke5 Kc4 47.Be2 Kc5 48.h4 Nb5 49.Bb5 Kb5 50.h5+-) 46.Be2 (46.g4!? Kd7+-) 46...Ne8 47.g4 Nd6 48.Ke5 Nf7 49.Kd4 Nd6 (49...Kd6 50.h4+-) 50.g5 (50.c5 bc5 51.Kc5 Nb7 52.Kc6 Na5 53.Kc7 Kf7+-) 50...Nb7 (50...Nf5 51.Ke5 Nh4 52.Bd3 Nf3 53.Ke4 Nd2 54.Ke3+-) 51.h4 Nc5 52.h5 Kf7 (52...Nb3 53.Ke5 Nc5 54.h6 Nd7 55.Kd4+-) 53.Ke5 Ke7 54.h6 Kf7 (54...Nd7 55.Kd4 Nf8+-) 55.Bh5 Kg8 56.g6 Nd3 (56...Nd7 57.Ke6 Nf8 58.Ke7 Ne6 59.Ke6 Kf8 60.g7 Kg8 61.Bf7 Kh7 62.g8Q Kh6 63.Qg6) 57.Kf6 White prepares the advance g7 57...Nc5 (57...Nf4 58.h7 Kh8 59.g7 Kh7 60.Bf7 Nh5 61.Bh5 e5 62.Bf7 Kh6 63.g8Q e4 64.Qg6) 58.g7 (58.h7 Kh8 59.g7 Kh7 60.Bg6 Kg8 61.Bf7 Kh7 62.g8Q Kh6 63.Qg6) 58...Kh7 (58...Nd7 59.Ke7 Ne5 60.fe5 Kh7 61.Kf6 Kg8 62.Bf7 Kh7 63.g8Q Kh6 64.Qg6) 59.Bg6 Kg8 (59...Kh6 60.g8N) 60.Bf7 (60.Bf7 Kh7 61.g8Q Kh6 62.Qg6; 60.h7) 1–0. BeepBeepImAJeep (2565) – AbbotHayes (2240), lichess.org, 2017.

4.a4 b6 5.c4 Bg7 6.e3 0-0 7.Nf3 d5 8.Be2 dc4 9.Bc4 a6 10.Nc3 ab5 11.ab5 c6?? (better 11...Ra1 12.Ba1 Bb7=) 12.Ra8+- cb5 13.Bb5 Bb7 14.Ra7 Bf3 (14...Qc7 15.Qa1 Rc8 16.Ne2+-) 15.Qf3 Nbd7 (15...Ne8 16.Be8 Qe8 17.Ba3+-) 16.0-0 (16.d4 e5+-) 16...Nc5 (16...Ne5 17.Qe2+-) 17.d4 Nce4 (17...Nb3 18.Rd1 Qb8+-) 18.Ne4 Ne4 19.Qe4 Re8 (19...Qb8 20.Rfa1 Qc8+-) 20.Be8 (20.Be8 Qe8 21.Ra8+-) 1–0. BeepBeepImAJeep (2590) – NikosP, lichess.org, 2017.

4.a4 c6 5.c4 cb5 6.cb5 d5 7.e3 Bc5 (7...Bd6 8.Nf3=) 8.Nf3+= Nbd7 9.Be2 0-0 10.0-0 Bd6 11.d4 b6 (11...a6 12.Ba3 Ba3 13.Na3+-) 12.Nbd2 (12.Ba3 Ba3 13.Na3 a6+-) 12...Bb7 (12...a6 13.Qb3+=) 13.Ne5 (13.Ba3 Ba3 14.Ra3+=) 13...Be5 (13...a6!?+=) 14.de5+- Ne8 (14...Ne4 15.Ne4 de4 16.Rc1+-) 15.Nf3 (15.Ba3 Nc5 16.Nb3 Rc8+-) 15...Ng7 16.Nd4 f6 17.ef6 Nf6 18.Rc1 Qe7 19.Nc6 (19.Qd3 Rfc8+-) 19...Bc6 20.Rc6 Rac8 21.Qc2 Rc7?? (better 21...Rc6 22.Qc6 Ne4+=) 22.Rc7+- (22.Rc7 Qd8 23.Ra7+-) 1–0. BeepBeepImAJeep (2660) – solonaskyriakides, lichess.org, 2016.

4.a4 Bg7 (---> 1.b4 Nf6 2.Bb2 g6 3.b5 Bg7 4.a4 e6).

4.Nc3 b6 5.Ne4 Be7 6.e3 Bb7 7.Nf6 Bf6 8.Bf6 Qf6 9.d4 0-0 10.Nf3 c5 11.bc6 Nc6 12.Be2 Rac8 13.0-0 d5 14.Rc1 Na5 15.Ne5 Rc7 16.Bb5 a6 17.Bd3 Rfc8 18.f4 Nc6 19.Ng4 Qe7 20.Rf2 Nb4 21.a4 Nd3 22.Qd3 Rc3 23.Qd2 a5 24.Nh6 Kg7 25.Ng4 f6 26.h3 Ba6 27.Nh2 Qb4 28.Nf1 Qa4 29.g4 Bf1 30.Kf1 Qa3 31.Re2 b5 32.Kf2 b4 33.Qd1 b3 34.Ra1 Qb2 35.cb3 Rc2 36.Rc2 Rc2 37.Kf3 Rf2 38.Kg3 Rg2 39.Kh4 Qf2 0–1. Abdullaevich (1635) – gabriel80546, lichess.org, 2018.

4.c4 c5 5.Nf3 (5.e3 Bg7=) 5...b6 (5...Bg7 6.Qc2=) 6.e3 (6.g4 h6+=) 6...Bb7 (6...Bg7 7.d4=) 7.Be2 (7.d4 a6+=) 7...Bg7 8.a4 (8.d4 cd4 9.Bd4 0-0=) 8...0-0 9.0-0 d5 (9...a6 10.d4=) 10.d4 (10.cd5 Bd5 11.Nc3 a6=) 10...cd4 (10...Nbd7 11.Nbd2=) 11.Nd4 (11.Bd4 dc4 12.Nbd2 c3 13.Bc3 Nbd7+=) 11...dc4 (11...a6 12.Nd2=) 12.Bc4+= Qc7 13.Be6 (13.Nd2 Nbd7+=) 13...fe6= 14.Ne6 Qe7 15.Nf8 Qf8 (15...Kf8?? 16.Ba3 Nbd7 17.Be7 Ke7 18.Nc3+-; worse is 15...Bf8 16.Qb3 Bd5 17.Bf6 Bb3 18.Be7 Be7 19.Nd2+=) 16.a5 (16.Nc3 a6+=) 16...Nbd7 (16...ba5 17.Ra5 a6 18.Qb3 Bd5 19.Qa3 Qa3 20.Na3 (worse is 20.Ba3 Bc4+=) 20...ab5 21.Ra8 Ba8 22.Rd1+/–) 17.ab6 (17.a6 Bd5=) 17...ab6 (17...Nb6 18.Bd4+=) 18.Ra8+= Qa8 19.f3 Qa2?? (better is 19...Qf8+=) 20.Bf6+- Nf6 (20...Bf3 21.Qf3 Nf6 22.Qc6+-) 21.Qd8 Kf7 22.Qc7 (22.Qc7 Kg8 23.Qb7+-) 1–0. GuestHVNP – GuestRXLL, freechess.org, 2018.

4.c4 c6 5.a4 Bg7 6.e4 d5 7.e5 Nfd7 8.d4 c5 9.cd5 ed5 10.Nf3 0-0 11.Be2 Re8 12.0-0 cd4 13.Bd4 Ne5 14.Ne5 Be5 15.Be5 Re5 16.Bf3 Be6 17.Nc3 Qd6 18.Ne4 Qe7 19.Nc3 Qg5 20.Re1 Nd7 21.Re5 Ne5 22.Qe2 Rd8 23.Rd1 Nf3 24.Qf3 Bg4 25.Qg3 Qh5 26.Rd5 Rd5 27.Nd5 Be6 28.Nf6 1–0. hal1958 – CYTO, playchess.de, 2002.

4.c4 d6 5.Nf3 c5 (5...a6 6.e4=) 6.e4 (6.e3 Bg7=) 6...Bg7 7.Nc3 (7.Be2 0-0 8.Qc2 a6=) 7...0-0 (7...Ne4!? 8.Bd3 Nc3 9.Bc3 Bc3 10.dc3 0-0+=) 8.Qc2 (8.d4 Nbd7=) 8...Nbd7 (8...d5 9.Bd3=) 9.Be2 Nb6 10.0-0 d5 11.ed5 (11.cd5 ed5 12.Rae1 Ne4+=) 11...ed5 12.d3 (12.Nd5 Nfd5 13.cd5 Bf5=) 12...d4 13.Na4 (13.Nb1 Re8=) 13...Na4+= 14.Qa4 Qd6 (14...Re8 15.Rfe1=) 15.Qc2 (15.Qa3 Re8 16.Rae1 Re6=) 15...a6 (15...Re8 16.Rfe1+=) 16.a4 b6 17.h3 (17.Rae1 Bb7+=) 17...Nh5 (17...Bb7 18.Rfe1+=) 18.Nh4 (18.Nd2 Nf4 19.Bf3 Bf5=) 18...Nf4 (18...Qf6 19.Nf3+=) 19.Bf3+= Ra7 20.Qd1?? (better is 20.Bc6+=) 20...Bf6 (20...g5 21.ba6 gh4 22.Bc1–+) 21.Bc1?! (21.g3 Nh3 22.Kg2 Bh4 23.gh4 Nf4 24.Kg1 Bf5–+) 21...Nh3! 22.gh3 Bh3?? (better is 22...Bh4 23.Bg2 ab5 24.cb5 Re8–/+) 23.Ng2+/– Re8 (23...Be5 24.Re1+=) 24.Bg4 (24.Bf4 Be5 25.Re1 Bd7 26.Be5 Re5+/–) 24...Bg2 (24...Bg4 25.Qg4 Be5 26.f4+/–) 25.Kg2+/– ab5 26.cb5 h5 (26...Bg5 27.Rh1+=) 27.Bh3 (27.Bf3 Be5+/–) 27...Qd5 (27...Bg5+=) 28.Qf3 (better is 28.Kg1!?+/–) 28...Qf3= 29.Kf3 g5 (29...Rea8!?=) 30.Bf5 (30.Bg2 h4+=) 30...Re5 ½–½. Dopper,Johan – Pannekoek, Zomer, 1994.

4.c4 Bg7 (--> 1.b4 Nf6 2.Bb2 g6 3.c4 Bg7 4.b5 e6).

4.e4 d6 5.Nf3 Bg7+= 6.Be2 (6.Bd3 a6=) 6...0-0 7.e5 (7.d3 a6 8.a4 Nbd7+=) 7...de5–/+ 8.Ne5 Nfd7 (8...a6 9.ba6 Nfd7 10.Nc4 Bb2 11.Nb2–/+) 9.d4 (9.Nc4 Bb2 10.Nb2 a6+=) 9...Ne5 (9...a6 10.Na3–/+) 10.de5+= Qg5 (10...Qd1 11.Kd1 Nd7 12.f4+=) 11.h4= Qf4 (11...Qg2?? 12.Bf3 Qh1 13.Bh1+-) 12.g3 (12.Qd2 Be5 13.Qf4 Bf4=) 12...Qe4 (12...Qb4 13.Bc3 Qc5 14.Qd4 Qd4 15.Bd4+=) 13.f3 (13.0-0 Be5 14.Nd2 Qd5=) 13...Qb4+= 14.Bc3 Qc5 (14...Qe7 15.Qc1+=) 15.Bd4 Qd5 (15...Qe7 16.Qd2 Rd8 17.Qe3+=) 16.c4 (better is 16.Nc3!? Qd7 17.Ne4+=) 16...Qd7= 17.0-0 Rd8 18.Bb2 (18.Bc3 Qe7 19.Qc2 Be5 20.Be5 Qc5 21.Kg2 Qe5=) 18...Qe7 19.Ba3?? (better is 19.Qc2=) 19...Rd1–+ 20.Be7 Rf1 21.Bf1 (21.Kf1 Be5 22.Nc3 Bc3–+) 21...Be5 22.Nc3 Bc3 23.Rd1 Nd7 24.c5 (24.Rd3 Bg7–+) 24...c6 (24...Kg7!? 25.Kg2–+) 25.bc6 bc6 26.Rd6 (26.Bg2 Bb4 27.Kh2–+) 26...Nc5 (better is 26...Be5 27.Rd1 Bg3–+) 27.Rd8 Kg7 28.Bc5 (28.Bf8 Kf6 29.Bc5 Ba5–+) 28...h5 (better is 28...Ba5!? 29.Rd1 Bb6–+) 29.Ba6–/+ Bb7! (29...Ba6 30.Ra8 Bc4 31.Ra7+-) 30.Ra8 (30.Bb7 Rd8 Discovered attack) 30...Ba8 31.Ba7 (31.Kf2 Kf6–/+) 31...e5 (31...Bb4 32.a4–/+) 32.Kf1 (32.Bc5 Bd4 33.Bd4 ed4=) 32...Bd4 (32...c5 33.Bc5 Bf3 34.a4–/+) 33.Bb8? (better is 33.Bd4!? ed4 34.Bc4=) 33...c5–/+ 34.Ke2 Bd5 (34...Bc6 35.Bc7–/+) 35.a4 f5 Black prepares the advance e4 (35...Bb3 36.a5 c4 37.Bb5–/+) 36.f4+= e4 (36...ef4 37.Bf4 c4 38.a5+=) 37.Bb5 (37.Be5 Kf7 38.Bb5 Ke6–/+) 37...c4 (37...Kf6 38.a5+=) 38.a5 (38.Be5 Be5 39.fe5 Kf7=) 38...c3 (better is 38...Kf6!?–/+) 39.Be5= Be5 40.fe5 Kf7 41.Kd1 (41.a6!?=) 41...Bb3+= 42.Kc1? (better is 42.Ke2 g5 43.a6 (43.hg5 h4 44.gh4 f4 45.e6 Ke6–+) 43...gh4 44.a7+= (44.gh4? Ke6–+)) 42...Ke6–+ 43.a6 Bd5?? (better is 43...Ke5 44.a7 Bd5–+) 44.Kc2+= f4?? (better is 44...Ke5 45.Kc3 e3+=) 45.gf4+- Kf5 (45...Ba8+-) 46.Kc3 Ba8 (46...e3 47.Kd4 Bc6 48.a7 Bb5 49.a8Q+-) 47.a7 (better is 47.Bd7 Kf4 48.e6 Bd5+-) 47...Kg4 (47...Ke6 48.Be8+-) 48.Be8 (48.e6 Kh4 49.e7 Kg3 50.e8Q Kf2 51.Qa8 Ke3 52.Qb7 Kf3 53.a8Q g5 54.Qe4 Kg3 55.Qe3 Kh4 56.f5 g4 57.Qd8) 48...Kh4 (48...Kf4 49.e6 Ke5+-) 49.Bg6 1–0. Gamrekelashvili,Zuka – Socolov,Vlad, World Cadets Championship U10, 2016.

4.Nf3 b6 5.e4+= Bg7 6.e5 Nh5 7.d4 0-0 8.Bc1 Bb7 9.g4+/– Nf6 10.Bg5 a6 11.h4 d6 12.ef6 Bh8 13.h5 Nd7?! 14.ba6 Ba6 15.Ba6 Ra6 16.hg6 hg6 17.Bh6 Re8 18.g5 e5 19.d5 Qa8 20.Ng1 Ra2 21.Ra2 Qa2 22.Ne2 Qa5 23.Nec3 b5 24.Qg4 Rd8 25.Bg7! Bg7 26.Qh4 Nf6 27.gf6 b4 28.Qh7 Kf8 29.Qh8!! (29.Qh8 Bh8 30.Rh8#) 1–0. pcmvr (1880) – the yid, internet, 2005.

4.g3 d5 5.Bg2 Bg7 6.d3 (6.Nf3 a6 7.a4 0-0=) 6...Nbd7 (6...0-0 7.Nf3+=) 7.Nd2 (7.Nf3 a6 8.ba6 ba6=) 7...0-0 8.Ngf3 Re8 (8...c6 9.bc6 bc6 10.c4=) 9.0-0 e5 10.e4 (10.c4 c6=) 10...d4 (10...a6 11.ba6 Ra6 12.ed5 Nd5 13.Re1=) 11.Nc4 (11.c3 dc3 12.Bc3 a6=) 11...Nh5 (11...a6 12.a4=) 12.c3 dc3 13.Bc3 e5 becomes the focus of attention 13...f6 (13...a6 14.a4=) 14.Qc2 (14.d4 ed4 15.Qd4 a6 16.Qd5 Kh8+=) 14...Bf8 (14...a6 15.ba6 Ra6 16.d4+=) 15.d4+/– Bd6 (15...ed4 16.Nd4 a6 17.Rfd1+/–) 16.Rfd1 ed4 (16...Qe7 17.de5 Be5 18.Nce5 Ne5 19.Be5 fe5 20.Rac1+/–) 17.Nd4 (17.Nd6 cd6 18.Bd4 Qe7 19.Qc4 Kg7+/–) 17...Bc5 18.Nb3 Qe7 19.Qd2 (19.Nc5 Qc5 20.Qb3 Kg7+/–) 19...Qf7 (19...a6!? 20.Qd5 Kg7 21.Nc5 Qc5+/–) 20.e5! Kf8? (20...Re5 21.Ne5) 21.Bd5+- (21.Nc5?! Nc5 22.ef6 Nf6+-) 21...Qe7 22.e6 (22.Nc5 Nc5 23.Bb4 Be6 24.Be6 Qe6 25.Bc5 Kg8+-) 22...Nb6 23.Nc5 Nd5 24.Qd5 b6 (24...Be6 25.Ne6 Qe6 26.Qe6 Re6+-) 25.Nd7 Bd7 26.ed7 (worse is 26.Qd7 Kg8 27.Re1 a6+-) 26...Red8 27.Re1 (better is 27.Qc6 a6 28.Qc7 Qc5 29.Qc5 bc5+-) 27...Qd7 28.Qf3 f5 (28...Kg8 29.g4 Ng7 30.Qf6+-) 29.Bb4 (29.a4 Qf7 30.Rac1 Kg8+-) 29...Kg8 30.Qb3 Qb5 (30...Qf7+-) 31.Nd6 (31.Nd6 Qd5 32.Qd5 Kg7 33.Bc3 Nf6 34.Bf6 Kf6 35.Qd4 Kg5 36.Qh4) 1–0. De Visser,Arno – Rozenbroek, Noordkop, 1994.

4.g4 h6 5.h4 Bg7 (5...a6 6.Nh3 g5 7.e3 ab5 8.hg5 hg5 9.Qf3=) 6.Bg2 (6.Bh3 a6 7.a4 d6=+) 6...0-0 (6...a6!? 7.c4 d5=+) 7.g5+= Ng4 (7...hg5 8.hg5 Nh7 9.Bg7 Kg7 10.f4+=) 8.Bg7+- Kg7 9.f3 Ne5 10.gh6 Kh6 11.d4 (11.Na3 Kg7 12.d4 c5 13.de5 Qa5 14.Kf2 Qa3+-) 11...Nc4+= 12.Qc1 (12.Qd3 d5 13.Nd2 Kg7=) 12...Kh7 (12...Kg7 13.h5=) 13.h5 Kg7 (13...Rh8 14.Qf4 f5 15.Nh3+=) 14.h6 (14.hg6 Rh8 (14...fg6?? 15.Qh6 Kf6 16.Qh4 Kg7 17.Qh7 Kf6 18.e4+-) 15.Rh8 Qh8+-) 14...Kh7 (14...Kh8 15.Na3 Na3 16.Qa3+=) 15.Na3 (15.a4 d5+=) 15...Na3 16.Qa3 d6 (16...d5 17.Qe3+-) 17.Qe3 (17.f4 d5+-) 17...a6+- 18.b6 (18.ba6!? Na6 19.f4+-) 18...cb6+= 19.Nh3 (19.f4 Kh8+=) 19...f6 (19...Kh8 20.0-0-0+=) 20.Nf2 (20.0-0-0!?+-) 20...Nc6+= 21.0-0-0 (21.Rd1 Qc7 22.Rd3 e5 23.de5 de5=+) 21...e5 (21...d5 22.Qd3=) 22.de5+= fe5 23.Kb1 (23.Ne4 d5=) 23...Bf5 24.Bh3 (24.Ne4 d5=) 24...Bh3 (24...Nd4 25.Bf5 Rf5 26.c3+=) 25.Nh3 Rf5 26.Rhg1 Rh5? (better 26...Nd4+=) 27.Ng5+- Kg8?? (27...Rg5 28.Rg5 Qc7+-) 28.Qb3 Kf8 29.Qf7 1–0. DEFFM – GuestFGXC, freechess.org, 2019.

(--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 e6).

5.Nf3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 0-0 5.Nf3 e6).

5.ed5 ed5= 6.Qe2 Be6 7.Nf3 Bg7 8.Ng5 Qd7 9.Ne6 fe6=.

5.ed5 ed5= 6.Be2 c5 7.bc6 Nc6 8.Nf3 Bg7 9.0-0 0-0=.

5.ed5 ed5= 6.Nf3 Bg7 (6...Be6 7.Qe2 Bg7 8.Ng5 Qd7 9.Ne6 fe6=; 6...Bd6 7.Be2 0-0 8.0-0 Re8 9.Re1 c5=) 7.Qe2 Be6 8.Ng5 Qe7 (8...Qd7 9.Ne6 fe6=) 9.Ba3 (9.d4 Bf5=) 9...Qd7 10.Nc3 h6 11.Ne6 Qe6 12.Qe6 fe6 13.Bd3 Kf7 14.0-0 a6 15.ba6 Na6 16.Rab1 b6 17.Rfe1 Nd7 (better is 17...Nh5!?+=) 18.Nd5+= Nab8 19.Re6 Ra3 20.Re7 Kg8 21.Nc7 (21.Bg6?! Bf8 (21...Ra2? 22.Nc7 Bf6 23.Bf7 Kh7 24.Rd7+/–) 22.Re6 Na6=) 21...Ne5 22.Ne8 (22.Rb6?! Nbc6 23.Re8 Kh7 24.Rh8 Kh8+=) 22...Rh7 23.Rb6 (worse is 23.Rg7 Rg7 24.Ng7 Kg7 25.Rb6 Nd3 26.cd3 Ra2+=) 23...Nbc6 24.Bc4 Kf8 25.Rg7 Rg7 26.Ng7 Kg7 27.Bb3 Nd4 28.f4 Ne2? (better is 28...Nec6+/–) 29.Kf2+- Nf4 30.d4 Nfd3 (30...Nf7 31.Rb7 Rb3 32.ab3+-) 31.Kg3 Nc1 (31...g5 32.Re6 Ra5 33.cd3 (33.Re5?! Ne5 34.de5 Re5+=) 33...Nd3 34.a4+-) 32.de5 Na2 33.Rb7 Kf8 34.Rf7 Ke8 35.Rf4 (35.Rf1 Ra6+-) 35...Nc1 36.Ra4 Rb3 (36...Ra4 37.Ba4 Ke7 38.Kf4+-) 37.cb3 Nb3 38.Ra7 Nd4 39.Kf4 Kf8 40.Ke4 Ne6 (40...Nc6 41.Rh7+-) 41.Kd5 (41.Kd5 Nf4 42.Kd6+-) 1–0. Kretschmar,Bernd – Lueckert,Bernd, corr DDR–ch MG09, 1989.

5.e5 A) 5...Ne4+= A1) 6.Nf3 Bd7 (6...Bc5 7.d4 Bb4 8.c3 Be7 9.Bd3 a6+=; 6...c6 7.Bd4 Bd7 8.a4 Bg7 9.Be2 c5=; 6...Bg7 7.d3 Ng5 8.Nbd2 Nf3 9.Nf3 c5=; 6...a6 7.a4 Nd7 8.Be2 ab5 9.ab5 Ra1+=; 6...Qd7 7.Nc3 Bg7 8.d4 Nc3 9.Bc3 a6+=) 7.Be2 c6 8.Nc3 Bc5 9.0-0 cb5=; A2) 6.d3 Nc5 7.Nf3 a6 8.a4 c6 9.Be2 ab5+=; A3) 6.Nc3 Nd7 7.Ne4 de4 8.Qe2 Nc5 9.Qe3 b6+=; B) 5...Nfd7 B1) 6.f4 a6 (6...g5 7.fg5 h6 8.h4 hg5 9.h5 Bg7=; 6...Be7 7.Nf3 0-0 8.Be2 a6 9.Nc3 f6=; 6...Nb6 7.Nf3 Bd7 8.Bd4 c5 9.Bf2 Be7=; 6...Bh6 7.Nh3 Bf8 8.Nf2 g5 9.Qg4 gf4=; 6...Bc5 7.Nf3 a6 8.d4 Be7 9.a4 0-0+=; 6...c5 7.Nc3 Qa5 8.a3 a6 9.ba6 Na6=) 7.Nf3 Bh6 8.g3 Bg7 9.d4 ab5=; B2) 6.Be2 c5 (6...Bg7 7.Nf3 0-0 8.d4 f6 9.0-0 fe5=) 7.d4 cd4 8.Qd4 Bc5 9.Qf4 Qa5=; B3) 6.Ne2 Bg7 (6...c5 7.bc6 Nc6 8.d4 f6 9.Nf4 Qb6=) 7.f4 c5 8.bc6 Nc6 9.Ba3 g5+=; B4) 6.Nf3 Bg7 7.d4 0-0 8.Ba3 Re8 9.Qd3 c5=.

5.e5 Nd5 6.c4 Nb6 7.d4 0-0 8.Nf3 d5 9.ed6 cd6 (9...Qd6? 10.c5 Qf4 11.cb6 ab6 12.Bd3+-) 10.Nbd2 d5 11.c5 N6d7 12.Be2 Nc5 13.dc5?? (better is 13.Ba3 Ne4 14.Bf8 Bf8 15.Qc2+=) 13...Bb2–/+ 14.Rb1 Bg7 15.0-0 Bd7 16.Nb3 a6 17.ba6 ba6 18.Qc2 Nc6 19.a3 Na5 (19...e5 20.Qd2 Bf5 21.Rbe1–+) 20.Rfd1 (better is 20.Qd2!? Nc4 21.Qa2–/+) 20...Ba4–+ 21.Nfd4 (better is 21.Nfd2–+) 21...Bd4 22.Rd4 Bb3 (worse is 22...Nb3 23.Ra4 Na5 24.Qc3=) 23.Rb3 Nb3 24.Qb3 Qc7 25.Qh3 Qc5 26.Rh4 Qc1 27.Bf1 h5 28.g4 Qh6 (better is 28...hg4!? 29.Rg4 Rac8 30.Rh4–+) 29.gh5 g5 30.Qg3 f5 (30...f6!? 31.Rg4–+) 31.f4 g4 32.h3 Rf7 (32...Kf7!? 33.hg4 fg4 34.Be2–+) 33.hg4 fg4 34.Rg4 Rg7 35.Be2 Kh8 36.Qc3 Rf8 37.Qe5 (37.Kg2 Kg8 (37...Rf4?! 38.Qc8 Kh7 39.Bd3 Re4 40.Be4 de4 41.Rg7 Qg7 42.Kh3–/+) 38.Qg7 Qg7–+) 37...Rf4 (better is 37...Qf6!? 38.Rg7 Qg7 39.Qg7 Kg7–+) 38.Qb8–/+ Kh7 39.Bd3 Rf5 40.Qg3?? (better is 40.Bf5 ef5 41.Rg7 Qg7 42.Kf1–/+) 40...Rg4–+ 41.Qg4 Qe3 42.Kh1 (42.Kh2 Qd3 43.Qg6 Kh8 44.Qh6 Kg8 45.Qe6 Kf8 46.Qd6 Kf7 47.Qg6 Ke7 48.Qg7 Ke6 49.Qg6 Kd7 50.Qg4–+) 42...Qe1 (42...Qd3 43.Qg6 Kh8 44.Qh6 Kg8 45.Qe6 Kf8 46.Qd6 Kf7 47.Qd7 Kf6 48.Qc6 Ke5 49.Qc7 Ke4 50.Qe7 Kf3 51.Qe1 Rh5 52.Kg1 Rg5 53.Qg3 Rg3 54.Kh2 Qh7) 43.Kg2 Qd2 44.Kh1 (44.Qe2 Qe2 45.Be2–+) 44...Qd3 45.Qg6 Kh8 46.Qe8 (46.Qh6 Kg8 47.Qe6 Kf8 48.Qd6 Kf7 49.Qd7 Kf6 50.Qd8 Ke5 51.Qe7 Kd4 52.Qg7 Kc4 53.Qg4 d4 54.Kg2 Qf1 55.Kg3 Qf2 56.Kh3 Rf3 57.Qf3 Qf3 58.Kh2 d3 59.h6 d2 60.h7 d1Q 61.h8Q Qdh1) 46...Kg7 47.Qg6 Kf8 48.Qh6 Ke7 49.Qg7 Kd6 50.h6 Qh3 51.Kg1 Rf1 0–1. Korepanova,Irina – Musin,Azat, Khanty Mansiysk Governor Cup, 2007.

5.e5 Nd5 6.c4 Ne7 7.d4 d6 8.f4 c5 9.bc6 Nbc6= 10.Nf3 de5 11.fe5 0-0 12.Bd3 (12.Nbd2 f6=) 12...f6 13.ef6 Bf6 Pawn d4, live or die! 14.Be4 Nf5 d4 becomes the focus of attention 15.Bc6 (15.Bf5 ef5 16.0-0 f4=) 15...bc6 16.0-0? (16.Bc3 Rf7=+) 16...a5 (better 16...Ne3 17.Qd2 Nf1 18.Kf1 c5-+) 17.Qd3 Ba6 (17...c5!?-/+) 18.Nbd2= c5 19.Ba3? (better 19.Rae1=) 19...Nd4-+ 20.Bc5? (better 20.Rae1 Nf3 21.Rf3 Qd4 22.Kh1 Qd3 23.Rd3-+) 20...Nf3 21.Rf3 Qd3 22.Rd3 Ba1 23.Bf8 Rf8 24.h3 (24.Rd6 Bc8-+) 24…Rc8 0-1. cabbage9 (2850) - zsolti_83 (2650), Rated Bullet game, lichess.org, 2020.

5.e5 Nd5 6.d4 0-0 7.c4 Nb6 8.Ba3 d6 9.Nf3 (9.c5 dc5 10.Bc5 Re8=) 9...Re8 10.Nbd2 de5 11.de5 c6 (11...a6 12.Bb2+=) 12.Bb2 cb5 13.cb5 a6 14.Ne4 Qd1 15.Rd1 Nc4?? (15...ab5 16.Bb5 Bd7 17.Bd7 N8d7=) 16.Bc4+- ab5 17.Bb5 Nc6 18.a3 Ra5 19.a4 Rd8 (19...Rf8 20.Nd6+-) 20.Rd8 Nd8 21.Nd6 Ra8 22.Ke2 Nc6 23.Rc1 h5 (23...Bf8 24.Ng5+-) 24.Ng5 Bh6 25.Ndf7 Bg5 26.Ng5 Bd7 27.Rd1 Ne5 (27...Be8+-) 28.Bd7 Nd7 29.Rd7 e5 30.Be5 Re8 31.Rg7 Kh8 32.Nf7 1–0. orane (2110) – cookboy50, Caissa.com, 2004.

5.e5 Nd5 6.d4 0-0 7.c4 Nb6 8.h4 h6 9.h5 g5 10.Nf3 d5 11.c5 Nc4 12.Bc4 dc4 13.Qa4 Bd7 14.Qc4 a6 15.ba6 Ra6 16.0-0 Ra4 17.Qd3 Nc6 18.Nc3 Nb4? (better is 18...Ra7+/–) 19.Qc4+- Nc2 (19...Qa8 20.Na4 Qa4 21.Qb3+-) 20.Na4 Na1 21.Ba1 Ba4 22.Qa4 Qa8 23.Qb3 Rd8 24.Rb1 Rb8 25.a4 Qa6 26.Qb5 Qa7 27.c6 b6 28.a5 (28.a5 Qa8 29.Bc3+-) 1–0. Bonetti,Shane – comanchee, ICC, 2002.

5.e5 Nh5 6.Ne2 0-0? 7.g4+- (7…Qg5 8.gh5 Qh5 9.Ng1 Qd1 10.Kd1+-) 1–0. b4_player (1900) – srbkllr (1800), GameColony.com, 2002.

5.e5 Nh5 6.Ne2 a6? 7.g4+- ab5 8.gh5 gh5? (better is 8...d6+-) 9.Rg1 Rg8 (9...Bf8 10.Ng3+-) 10.Nf4 Qh4 11.Nh5 Qh2 (11...Kf8+-) 12.Ng7 Kf8 13.Qg4 Nc6 (13...Qg1 14.Qg1 Rg7 15.Qh1+-) 14.Ne6! de6 (14...fe6 15.Qg8) 15.Qg8 Ke7 16.Bb5 Ra5 (16...Qh5 17.Bc6 bc6 18.Qg4 Qg4 19.Rg4+-) 17.Ba3 (17…Ra3 18.Qg5 Kd7 19.Na3+-) 1–0. tromar (1955) – rishikesh (1745), GameColony.com, 2002.

5.e5 Nh5 6.Ne2 f5=.

5.f3 0-0 6.g3 c6 7.a4 a6 8.ba6 Na6 9.Bc4 d5 10.ed5 cd5 11.Bb3 Bd7 12.Ba3 Re8 13.Ne2 Bc6 14.Nd4 Nh5 15.Bb2 Nf6?? 16.0-0 Nd7 17.Nc6 bc6 18.Bg7 Kg7 19.c3 c5 20.f4 c4 21.Bc2 Rb8 22.Na3 Nf6 23.Nb5 Qb6 24.Kg2 Qc6 25.Nd4 Qd7 26.a5 Ne4 27.Ba4+/– Qe7 28.Be8 Qe8 29.d3 Nc3 30.Qc2 Nb5 31.Nb5 Rb5 32.dc4 dc4 33.Qc4+- Qa8 34.Kh3?? Rb8 35.Qd4 Kg8 36.Rab1 Rd8 37.Qf6 Rf8 38.Rfe1 Nc5 39.Rb5 Ne4? 40.Re4?? Qe4= 41.a6 Qf3 42.Ra5 Qh5?? (better is 42...Ra8=+) 1–0. MasterofDisaster – georgizc, Caissa.com, 2004.

5.e3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.e3 Bg7 4.b5 0-0 5.Nf3 e6).

5.e3 b6 6.d3 Bb7 7.Nbd2 0-0 8.e4 a6 9.e5 Ng4 10.h3= Nh6 11.ba6 Ba6 12.Ne4= Nc6 13.Qd2 d6 14.d4 d5 15.Ba6= Ra6 16.Nf6 Kh8 17.0-0 Ra4 18.Qc3 Na5 19.Ba3+= Rc4 20.Qd2 Bf6? 21.Bf8+- Qf8 22.ef6 Nf5 23.Rfe1 Qd8 24.Ne5 Qe8? 25.Nc4 Nc4 26.Qg5 Na3 27.Qc1 Nc4 28.c3 Qd8 29.g4 Nh4 30.Qh6 Nf3 31.Kh1 Qg8 32.Red1 Nb2 33.Rdb1 Nc4 34.Kg2 Nfd2 35.Re1 Nd6?? 36.Qd2 (36.Qd2 Ne4 37.Qe3+-) 1–0. orane – henryj, caissa.com, 2005.

5.e3 d5 6.Be2 0-0 7.d4 Bd7 8.a4 c6 9.0-0 cb5 10.ab5 Qb6 11.Qd3 Rc8 12.Nbd2 a6 13.c4 dc4 14.Nc4 Qc7 15.ba6 Ra6 16.Ra6 Na6 17.Rc1 Bc6 18.Nfe5 Nd7 19.Nc6 bc6 20.Ne5 Ne5 21.Qa6 Nd7 22.Bf3 c5 23.Ba3 c4 24.Bd6 Qd8 25.Bb7 Nb8 26.Qa8 Bf8 27.Bf8 Qf8 28.Bc8 Qc8 29.Rb1 Kg7 30.Qb8 Qa6 31.Qe5 Kh6 32.g4 c3 33.Qf4 Kg7 34.g5 e5 35.Qe5 f6 1–0. phildo (1860) – hector_hrc (1735), gameknot.com, 2013.

5.e3 d6 6.Be2 a6 7.c4 (7.Nc3 ab5 8.Nb5 c6=) 7...ab5 8.cb5 Nbd7 (8...e5 9.d4=) 9.a4 (9.d4 0-0=) 9...e5 10.d3 Nc5 11.Nbd2 (11.d4 ed4 12.ed4 Nd5=) 11...Bf5 12.Qc2 0-0 (12...e4 13.de4 Be4 14.Ne4 Nce4 15.0-0+/–) 13.0-0 (13.Ne5 Nd5 14.e4 Re8 15.ef5 Be5 16.Be5 Nb4+/–) 13...Qd7 (13...Qe7!?=) 14.e4+= Bg4 15.Rfc1 (15.Be5!? de5 16.Qc5+=) 15...Bh6= 16.Re1 (16.Bc3 Rfe8=) 16...Nh5 (16...Rfe8 17.Nc4 Ne6 18.Nfe5 de5 19.Ne5+-) 17.Be5 Bf3 (better is 17...Bd2!? 18.Nd2 Be2 19.Re2 de5 20.Qc5 Qd3=) 18.Nf3+/– Qe6 (18...Ra4 19.Ra4 Na4 20.Qa4 de5 21.Ne5+/–) 19.Bb2 (19.Bd4 Nb3 20.Ra3 Nd4 21.Nd4 Qf6+-) 19...Bg7 (19...Nf4 20.Qc3 Ne2 21.Re2+-) 20.Bg7 Ng7 21.d4 (21.e5 Nf5+-) 21...Qe4+/– 22.Qc4 (22.Qd1 Nce6+/–) 22...Nce6 23.Bd3 (23.a5 Nf5 24.b6 cb6+=) 23...Qf4 (23...Qg4 24.Be4 Nf4 25.Nd2+=) 24.Be4 (24.a5 Rfe8+/–) 24...Rab8 (24...Ra7 25.a5+/–) 25.Bd5 (25.a5 Rfe8+/–) 25...h5 (25...Qg4 26.h3 Qh5 27.Re4+/–) 26.Re4 Qf6 (26...Qf5 27.Nh4 Qf6 28.g3+/–) 27.Rae1 Rfe8 (27...Nf4 28.Re7 Nge6 29.Rd7+/– (worse is 29.Be6 Qe7 30.Bd5 Qd7+=)) 28.Be6 Ne6 29.d5 Ng7 30.Qc7 Rec8 31.Qa5 (31.Qb6 Rc2+-) 31...g5 (31...Qf5 32.Qd2+-) 32.h3 (32.Qb6 Rc5+-) 32...Kh7 (32...Qf5 33.Qd2+-) 33.Qd2 Kh6 (33...Kg6 34.a5+-) 34.h4 Kh7 35.Ng5 Kg8 36.Nf3 (better is 36.Re7!? Rf8+-) 36...Rc5 37.Rf4 Qg6 38.Ng5 Rc2 39.Qd4 (39.Qd4 Nf5 40.Qe4 Nh4 41.Rf7 Qe4 42.Re4+-; 39.Qd1 Rf8+-) 1–0. Acevedo,Daiana – Sanz,Hernan, Najdorf U20 op, 2003.

5.e4 d6=.

5.Ng5 h6 6.Bf6?? Qf6–+ 7.Ne4 Qa1 8.d3 Qe5 9.Nbc3 Qh5 10.Qb1 Bc3 11.Nc3 b6 12.Ne4 Qf5 13.g3 Bb7 14.Bg2 d5 15.Nc3 c6 16.0-0 0-0 17.f3 Nd7 18.g4 Qf6 19.h4 Qh4 20.f4 e5 21.f5 Qg4 22.fg6 Qg6 23.bc6 Bc6 24.Qc1 d4 25.Ne4 Be4 26.de4 f5 27.ef5 Rf5 28.Rf5 Qf5 29.Qh6 Qh7 30.Qg5 Qg7 31.Bd5 Kh8 32.Qg7 Kg7 33.Ba8 Nc5 34.Bd5 Na4 35.c4 Nc3 36.Bf3 Na2 37.Bc6 Nc3 38.e4 a5 (38...a5 39.Kf1 a4 40.Ba4 Na4–+) 0–1. blacksteelpipe – oblivion11, Live Game Caissa's Web, 2005.