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TESTG900 Release 2023-04-27
Send your 1.b4 games to me, please. Thank you! /Marek
Marek Trokenheim's homepage
(c) Marek Trokenheim

1.b4 e5 2.Bb2 d6 3.e3 Nf6

(...)

4.a4 Nc6 5.b5 Nb4 6.Nf3 Be7 7.Be2 Bf5 8.d3 e4 9.Nd4 Bg6 10.0-0 Nbd5 (10...ed3 11.cd3 c5 12.bc6 bc6 13.f4+=) 11.c4 Nb4 12.Bc3 (12.de4 Be4 13.Nc3 Bg6+/-) 12...d5 (12...ed3!? 13.Bf3 d5=) 13.de4+= Be4 (13...de4 14.a5+=) 14.f3 Bg6 15.Nd2 ½–½. butchpat – mattivee, gameknot.com, 2014.

4.a4 e4 5.Ne2 Bg4 (5...d5 6.b5=+) 6.c4 (6.h3 Bd7=) 6...Nbd7 (6...Nc6!? 7.Qb3 d5-/+) 7.Qc2= Be7 (7...c6!?=) 8.Ng3 Nb6 (8...a5 9.b5+=) 9.a5+/- Nc8 (9...Nbd7 10.Ne4 a6 11.Nbc3+/-) 10.Ne4 Bf5 (10...Be6!?+/-) 11.Nf6 Bf6 12.Bf6 (better 12.Qf5!? Bb2 13.Qb5 Qd7 14.Qb7 Ba1 15.Qa8+-) 12...Qf6+/- 13.Qc3 Qg6 14.g3 (14.a6 ba6 15.d3 0-0+/-) 14...Be4+= 15.Rg1 Ne7 (15...Bb1 16.d3+=) 16.d3+/- Bf3 (16...Bf5 17.Nd2+/-) 17.Nd2 Bc6 18.0-0-0 (18.b5!? Bd7 19.Bg2+/-) 18...0-0 19.f4 d5 (19...Rae8 20.e4+=) 20.Bg2 dc4 21.Nc4 (21.dc4 Bg2 22.Rg2 Rfd8+=) 21...Bg2 22.Rg2 Nd5 23.Qd2 b5 24.Ne5 (better 24.e4!? bc4 25.ed5 cd3 26.Qd3+=) 24...Qd6=+ 25.Qc3?? (25.d4 Nb4 26.e4 Rfd8-/+) 25...Nb4 (better 25...Nc3 26.Rdd2 Qb4-+) 26.Rb2-/+ Nd5 27.Qd2 (27.Qc6 Ne3 28.Re1 Nf5 29.Qb5 Rae8=+) 27...a6 (27...Qc5!? 28.Rc2 Qa3 29.Kb1 b4-/+) 28.e4=+ Ne7 29.Qb4 Qb4 (29...Rac8!?-/+) 30.Rb4= c5 31.Rb3 Rfd8 32.Kc2 (32.Rc3 Rac8=) 32...f6=+ 33.Nf3 Nc6 34.Ra1 (34.Rc3 c4 35.d4 Na5-/+) 34...Nb4 (34...b4!?-/+) 35.Kd2= Rac8 36.Ke3?? (better 36.g4=) 36…Nc2-+ (36...Nc2 37.Kd2 Na1-+) 0-1. dannysmet (2115) - Wolf555555555555 (2145), Rated Blitz game, lichess.org, 2021.

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

4.b5 Qd7 5.a4 a5 6.c4 c5 7.Nf3 Qe7 8.d3 Bg4 9.Be2 g6 10.0-0 Bg7 11.Nc3 Nbd7 12.Nd2 Qe6? (better 12...Be6+=) 13.f3+- Bh3 (13...Bh5 14.g4+-) 14.gh3 Qh3 15.Qe1 Bh6 16.Nd1 Nh5 (16...d5 17.cd5 Nd5 18.f4+-) 17.Qf2 Ndf6 (17...0-0-0 18.b6!+-) 18.Qg2 (18.f4 Qe6+-) 18...Qe6 (18...Qg2 19.Kg2 Bg7+-) 19.Bc1 (19.f4!? Qe7+-) 19...0-0?? (better 19...Be3 20.Ne3 Nf4+=) 20.Ne4+- Ne4 (20...b6 21.Ndf2+-) 21.fe4 Be3 (21...Nf6+-) 22.Be3 f5 (22...Nf4 23.Bf4 ef4+-) 23.Bh5 Kg7 (23...fe4 24.Nf2 ed3 25.Bf3+-) 24.Bf3 (24.ef5 Qd7 25.Nc3 Kh8 26.fg6 hg6 27.Bg6 Rab8+-) 24...Rf6 (24...f4 25.Bc1+-) 25.Bg5 Kf7 (25...Raf8+-) 26.Ne3 (26.Ne3 Rf8 27.ef5+-) 1-0. BeepBeepImAJeep (2575) – misakrak, lichess.org, 2017.

4.b5 e4 5.f3 d5 6.g4? g5?? 7.d3 Bb4 8.c3=+ Bc5 9.d4? Bb6 10.fe4 Ne4 11.Qf3 c6 12.a4 Nd7 13.h3 f6 14.Bd3= c5 15.Be4+/- de4 16.Qe4 Qe7 17.Qe7 Ke7 18.d5 c4 19.e4 Be3 20.Na3 Ne5 21.Ke2 Bg1+= 22.Rhg1 Nd3?? 23.Nc4+– Nb2 24.Nb2 b6 25.Nc4 h6 26.d6 Kd7 27.Rad1 Re8 28.Ke3 Bb7 29.Rd4 Re6 30.Rgd1 Rae8 31.Nd2 Rd6 32.Rd6 Kd6 33.Nc4 Kc5 34.Nd6 Re7 35.Rd4 Rd7 36.Nb7 Rb7 37.Kd3 Rf7 38.Rd5# 1–0. tschulz – Master1, mySchach.de, 2005.

4.b5 h6 5.Nf3 Bf5 6.Be2 Be7 7.0-0 0-0 8.a4 c6 (8...a6 9.d3=) 9.c4 c5 (9...Nbd7 10.d4=) 10.d4 (10.d3 a6=) 10...ed4 (10...cd4 11.ed4 e4 12.Nfd2=) 11.ed4+= b6 (11...d5 12.Re1+=) 12.Nc3 (12.Nh4 Bh7+–) 12...Ne4 (12...a6!?+=) 13.Nd5 Nd7 (13...Re8 14.dc5 dc5 15.Bd3+–) 14.Bd3 (worse 14.Ne7 Qe7 15.Re1 a6+–) 14...Ndf6 (14...Bh7!?+–) 15.Re1+– (15.Ne7?! Qe7 16.Re1 Qb7+–) 15...Nd5 (15...Re8 16.Qc2 (16.Ne7?! Re7 17.dc5 dc5+–) 16...Bg6 17.Be4 Ne4 18.Re4 Be4 19.Qe4+–) 16.cd5 (16.Be4?! Be4 17.Re4 Nb4+–) 16...Nf2 17.Kf2 Bd3 18.Qd3 cd4 (18...Bf6 19.Ra2+–) 19.Nd4 (19.Qd4?! Bf6 20.Qd2 Bb2 21.Qb2 Rc8+–) 19...Qd7 (19...Re8+–) 20.Nf5 Bf6 (20...Rfe8 21.Bg7 Bh4 22.Nh4 Kg7 23.Nf5 Kf6 24.Nh6 Re5+–) 21.Bf6 gf6 (21...g6 22.Nh6 Kh7+–) 22.Qg3 (22.Qg3 Kh7 23.Qg7) 1–0. onur604 (2320) – ivan22062014 (1965), lichess.org, 2020.

4.Bb5 Nc6 5.a3 Bd7 6.Be2 Be7 7.b5 Na5 8.Nf3 c6 9.c4 cb5 10.cb5 a6 11.a4 ab5 12.ab5 0-0 13.0-0 b6 14.d3 Nb7 15.Nc3 Nc5 16.Ra8 Qa8 17.e4 Re8 18.Nd2 Qa5 19.Nb3 Nb3 20.Qb3 Rc8 21.Ba3?? Be6 22.Qb2 Rc3 23.Bb4 Qa8?? 24.Qc3 Bd8?? 25.Qc6 Bd7 26.Qa8 (26…h6 27.Qd8 Kh7 28.Qb6+–) 1–0. TIROLOCO – goldenbear, Live Game Caissa's Web, 2004.

4.Bb5 Nbd7 5.Nf3 c6 6.Be2 Be7 7.c4 e4 8.Nd4 0-0 9.Nf5 Ne5 10.Ne7 Qe7 11.Nc3 Nd3 12.Bd3=+ ed3 13.0-0 Bf5 14.Qb3 Ne4 15.Nd1 Qg5 16.Qd3 Nf2 17.Qe2 Nh3 18.Kh1 Be4? 19.Rg1?? Ng1-+ 20.Kg1 f5?? 21.Nf2?? Rae8 22.d3?? Qg2# 0–1. GULP – theartoffarting, Live Game Caissa's Web, 2004.

4.c3 a6 5.g3 Be7 6.Bg2 0-0 7.a4 Nc6 8.a5 Bd7 9.d4 ed4 10.ed4=+ b6 11.d5 Ne5–/+ 12.ab6 cb6 13.Nd2?? b5 14.Ne2?? Nd3-+ 15.Kf1 Nb2 16.Qb3 Nd3 17.Nf4 Nf4 18.gf4 Nh5 19.c4 Nf4 20.cb5 Bb5 21.Nc4 Rc8 22.Rc1 Bg5 23.Rc2 Qe7 24.Bf3 Rfe8 25.Re2 Ne2 26.Be2 Qe2 27.Kg2 Bc4 28.Qg3 Bd5 (28...Bd5 29.Qf3 Qf3 30.Kf1 Qh1#) 0–1. pinecrest1981 – JimA22, Caissa.com, 2004.

4.c3 d5 5.Nf3 Bd6 6.Bb5 Bd7 7.Bd7 Nbd7 8.d3 =+.

4.Nc3 a6 5.Qf3 Nc6 6.b5 ab5 7.Bb5= Bg4 8.Qg3 Bf5 9.Bc6 bc6 10.Qf3 Bd7 11.Ne4 Ne4=+ 12.Qe4 Be7 13.Nf3 0-0 14.0-0 c5 15.Ne5? (better is 15.a4=) =. Royaltee – openingame, Live Game Caissa's Web, 2004.

4.Nc3 c6 5.d3 b5 6.Nf3 Be7 7.a4+= ba4 8.Ra4 d5 9.Ne5+/- 0-0 10.d4 Bd6 11.b5 cb5 12.Nb5 a6? 13.Nd6 Qd6 14.Ba3 Qd8 15.Bf8 Qf8 16.c4 Ne4 17.Qc2 Bf5 18.Bd3 a5 19.cd5 Qd8 20.Be4 Be4 21.Qe4 Qb6 22.0-0 Na6 23.Nc6 (23.Nc6 Rf8 24.Rb1+–) 1–0. merill – jjake, internet, 2011.

4.Nc3 g6 5.Nf3 Bg7 6.d4 e4 7.Nd2 d5 8.h3 0-0 9.Be2 Re8 10.b5 Nbd7 11.Nb3 b6 12.a4 a5 13.ba6 (better 13.h4=) 13...Ra6?? (13...Ba6 14.0-0=+) 14.Nd2 (14.Ba6 Ba6 15.Ne2 Qa8+/-) 14...c6 (better 14...Ra8=+) 15.Nc4?? (better 15.Ba6 Ba6 16.Ne2+/-) 15...dc4-+ 16.Bc4 Ra5 17.Nd5 (17.Qe2-+) 17...Qe7 (better 17...Nd5 18.0-0 Qg5-+) 18.Nf6 (18.Nf6 Nf6 19.Bc3-+). opperwezen (2725) - Jasugi99 (2750), lichess.org, 2021.

4.Bc4 Nbd7 5.a3 d5 6.Ba2 g6 (6...Bd6 7.Ne2+=) 7.Nf3 e4 8.Nd4 Bg7 9.0-0 c6 10.c4 a6 (10...Ne5 11.cd5 cd5 12.Nc3=) 11.f3 Ne5 12.fe4 de4 13.c5 0-0 14.Nc3 Nd3 15.Rb1 (15.Qb3 Nb2 16.Qb2 Qe7=) 15...Bg4 (15...Ng4!? 16.Nce2 a5–/+) 16.Qc2= Nd5 (16...Nb2 17.Rb2 Qe7=) 17.Bc4?? (17.Ne4 Nb2 18.Rb2 Bd4 19.ed4 Bf5+/-) 17...Nc3?? (better is 17...Bd4 18.ed4 N5b4–/+) 18.Bc3+/- (worse is 18.Qc3 Be2!? 19.Rf7 Rf7+=; 18.dc3?! Qg5 19.Bc1 Nc1 20.Qc1 Be5=) 18...Bd4 19.Bd4 (worse is 19.ed4 Be2–/+) 19...Be2?? (19...Bf5 20.Ba1 Re8 21.Qa2+/-) 20.Qc3 (better is 20.Ba1 Qc7 21.Qc3+–) 20...Bf1?? (better is 20...Qg5+/-) 21.Bh8 Ne5 22.Qe5 Qg5 (22...Qd4 23.Qd4 Bc4 24.Qg7) 23.Qg7 (23.Bf1?! Qe5 24.Be5 Rad8+–) 1–0. rla – arok, internet, 2007.

4.Bc4 Qe7 5.a3 b6 6.Nc3 Bb7 7.Nf3 g6 8.d3 Bg7 9.Ng5 (9.e4 c6+=) 9...Rf8 (better is 9...d5 10.Bb3 d4=) 10.Nce4?? (10.e4 c6+=) 10...h6?? (better is 10...Ne4 11.Ne4 d5 12.Bd5 Bd5-+) 11.Nf6+= Bf6 12.Nh7 Rh8 13.Nf6 Qf6 14.0-0 Qg5 15.e4 Nd7? (better is 15...Rf8!?+/-) 16.f4+– Qe7 17.fe5 Ne5 18.Be5 Qe5 19.Bf7 Kd8 20.Bg6 Bc8 21.Qe1 Bd7 22.Qh4 Kc8 23.Bf5 Bf5 24.Rf5?? (better is 24.ef5 Qe3 25.Qf2+–) 24...Qa1-+ 25.Rf1 Qa3 26.Qh5 (26.e5 de5 27.Qe4 Kb8 28.Qe5 Rd8-+) 26...Qb4 27.Qf5 Kb8 28.Qd7 (28.h3 Qc5 29.Qc5 bc5 30.Rb1 Kc8-+) 28...Kb7 29.h3 (29.Kh1 Raf8 30.Ra1 Rf2-+) 29...Raf8 30.Rf8 (30.Qg7 Qc5 31.d4 Rf1 32.Kf1 Qc4 33.Kg1-+) 30...Rf8 31.Qg7 Qe1 32.Kh2 Rf1 0–1. Rudolf – pbram143, internet, 2007.

4.Bc4 g6 5.Nf3 (5.f4 d5 6.Bb5 c6 7.fe5 Ne4=) 5...Bg7 (5...d5 6.Bb3 e4 7.Ng1 Bb4 8.Bd5 Qd5 9.Bf6=+) 6.Nc3 a6 (6...d5 7.Bb5 c6 8.Be2=) 7.a4 (7.0-0 d5 8.Be2 Qd6=) 7...b6 (7...d5 8.Be2 Qd6 9.b5=) 8.0-0 Bb7 (8...d5 9.Bb3 Qd6 10.b5=) 9.Qe2 (9.d3 d5 10.Bb3 Qd6+=) 9...0-0 (9...e4 10.Nd4=) 10.b5 (10.e4 Nc6 11.b5 Nb4+=) 10...a5 (10...d5 11.Bb3 Re8 12.d4=) 11.d3 (11.e4 Nbd7+=) 11...e4 (11...d5 12.Bb3 Nbd7 13.Rae1=) 12.Ne4+= Ne4 13.Bg7 Kg7 14.de4 Be4 15.Bd3 Qe7 (15...f5 16.Nd4 Qe7 17.Bc4+=) 16.Be4 Qe4 17.Qd3 (17.Qd2 Kg8+=) 17...Qb7 (17...Qd3 18.cd3 c6 19.bc6 Nc6 20.Rfc1+=) 18.Rfd1 (18.Nd4 Nd7+=) 18...Nd7 19.Qc3 (19.Nd4 Rae8+=) 19...Kg8 (19...f6 20.Rd4+=) 20.Rd4 (20.Nd4 Rae8+=) 20...Nc5 21.Rh4 Qd5 (21...Ne4 22.Qd3 Rae8 23.Rd1+=) 22.Qd4 Qd4 23.ed4 Ne6 24.Re4 Rfe8 25.Rae1 Ng7 26.c4 Re4 27.Re4 Re8 28.Re8 Ne8 29.d5 (29.Nd2 f5+=) 29...Nf6= 30.Nd2 (30.Ne1 Ne4 31.Nd3 f5=) 30...Nd7 31.Ne4 (31.Nb1 Ne5=+) 31...f5=+ 32.Nd2 (32.Nc3 Ne5=+) 32...Nc5–/+ 33.Kf1 Na4 34.Ke2 Kf7 35.f4 (35.Kd3 Nc5 36.Kd4 a4–/+) 35...Kf6 36.h4 Nc5 37.Ke3 h6 38.g3 (38.Kd4 g5–/+) 38...h5 (38...Ne4 39.Ne4 fe4 40.Ke4-+) 39.Kd4 Ne4 40.Nf1 g5 (40...a4 41.Kd3–/+) 41.Kd3 (41.fg5 Kg6=) 41...Kg6 (41...g4 42.Kc2–/+) 42.Kd4 (better 42.fg5 Nc5 43.Kc3 Ne4 44.Kb3 Nc5 45.Kb2=) 42...gf4 43.gf4 Nf2 (43...a4 44.Kd3–/+) 44.Ne3 Kf6 45.Kc3 Ne4 46.Kc2 Nc5 47.Kc3 a4 48.Ng2 a3 49.Kc2 Ne4 50.Kc1 (50.Kb3 Nd2 51.Ka3 Nc4 52.Kb3 Nd2 53.Kc3 Ne4 54.Kd3 Kf7=+) 50...Nd2–/+ 51.Ne3 Nf3 52.Ng2 ½–½. Szymanski,Marcin – Gasiorowski,Michal, Zbaszyn Poland, 1993.

4.d3 Nc6 5.b5 Ne7 6.a4 Ng6 (6...Be6 7.Nf3=) 7.Nf3 Be7 8.Be2 h6 9.Nbd2 Be6 10.c4 b6 (10...a6 11.0-0=) 11.0-0 0-0 12.Ne1 (12.Qc2 Bf5+=) 12...Qd7 13.Nc2 (13.Bf3 d5=) 13...d5 (13...a6 14.d4=) 14.Bf3 (14.cd5 Bd5 15.d4 e4=) 14...Rad8 (14...a6 15.cd5 Nd5 16.Nc4=) 15.Bc3 (15.cd5!? Bd5 16.e4=) 15...dc4=+ 16.dc4 (16.Nb4 a5 17.Nc6 Qd3 18.Nd8 Rd8–/+ (18...Qc3? 19.Ne6 fe6 20.Rc1+–; worse 18...Qd8 19.Rc1+=; worse 18...Bd8 19.Rc1+=)) 16...Nh4 (better 16...Qd3 17.Nb1 Qc4–/+) 17.Nb4= Nf3 18.Qf3 Bb4 19.Bb4 Rfe8 20.Qe2 c5 21.Bc3 Qd3 22.Qd3 Rd3 23.Rfc1 Red8 (23...Bg4 24.h3 Be2 25.a5=) 24.Nf3 e4 (24...Ne4 25.Be5 f6 26.Bc7=+) 25.Ne5= R3d6 26.a5 Ng4 (26...Nd7 27.Nc6 Ra8 28.Ra4=) 27.Nc6+= R8d7 28.h3 Nf6? (28...Bc4 29.ab6 (worse 29.hg4 Bb5 30.ab6 ab6=) 29...ab6 30.Na7+–) 29.ab6 (better 29.Be5!? Rd2 30.Bb8+–) 29...ab6+= 30.Bf6 gf6 31.Kf1 (31.Ra6 Rd1 32.Rd1 Rd1 33.Kh2 Bc4 34.Rb6 Kg7+=) 31...Rd3 (31...Rd2 32.Ke1=) 32.Ke1 Rd2 (32...R7d6 33.Ra6 Bc4 34.Rb6 Bb5 35.Rb5 Rc6 36.Rbc5 Rc5 37.Rc5+=) 33.Nb8 (33.Ne7 Kg7 34.Nc8 Rb2=) 33...R7d6= 34.Na6 (better 34.Nc6!?=) 34...Rb2–/+ 35.Rab1 Rb1 36.Rb1 Bc4 37.g4 (37.Nc7 Bd3 38.Ra1 c4–/+) 37...Bd3-+ 38.Rd1 c4 (38...Kf8 39.Nc7-+) 39.Nb4–/+ c3 (39...Kg7 40.f3 ef3 41.e4–/+) 40.f3 Rd7 (better 40...Re6!?–/+) 41.fe4= Bb5 42.Rc1 (42.Rd7 Bd7 43.Nd5 Kg7+=) 42...Rc7 (42...Bc4 43.Rc3 b5 44.Kf2=) 43.Nd5+= Rc6? (better 43...Rc5!?+=) 44.Ne7+– Kg7 45.Nc6 Bc6 46.Rc3 Be4 47.Kf2 (47.Rb3 f5 48.Rb6 fg4 49.hg4 f5 50.gf5 Bf5+–) 47...b5 48.h4 (48.Rb3 Bc6+–) 48...Bd5 (48...f5 49.gf5 Bf5 50.Rb3+–) 49.h5 (49.Rc5!? Be6+–) 49...b4 50.Rc5 ½–½. Da Silva Junior,Marco Aurelio (1780) – Rocha,MA Araga, Itajai Brazil, ChampionshipU16, 2016.

4.d3 Nbd7 5.Nf3 Be7 6.Be2 a6 7.a4 c5 8.c3 cb4 9.cb4 Nb6 10.e4 Be6 11.a5 Nbd7 12.Ng5 Rc8 13.Ne6 fe6 14.Qb3 d5 15.Nd2 Rc6 16.0-0 0-0 17.Rfc1 Rc1 18.Rc1 Bd6 19.Bf3 Qe7 (19...Kh8+=) 20.Ba3 (20.ed5 ed5 21.Bd5 Nd5 22.Qd5 Qf7+/-) 20...Rb8 (better is 20...Qf7!?=) 21.ed5+/- ed5 22.Bd5 Nd5?? (better is 22...Kh8 23.Ne4 Ne4 24.Be4 b6 25.ab6 Nb6+/-) 23.Qd5+– Kh8 24.Rb1 (better is 24.Ne4 Bb4 25.Bb4 Qb4 26.Qd7+–) 24...Nf6+/- 25.Qb3 Re8 26.Ne4 Ne4 27.de4 Qe6 28.Qd3 Qe7 29.h3 g6 30.Qe3 Rc8 31.Qb3 Rb8 32.Bc1 (32.Rd1!? Re8+–) 32...b6+/- 33.ab6 Rb6 34.Bd2 Rb5 35.Qc4 Qc7 36.Qe6 a5?? (36...Kg7 37.Bg5 Rb6+–) 37.Rc1 Qe7 38.Rc8 Kg7 (38...Qf8 39.Bh6 Rb7 40.Qf6 Kg8 41.Qf8 Bf8 42.Rf8) 39.Rg8 1–0. Wiszniowski,Eugeniusz (1780) – David,Heinz_Dieter, 17OBSen–Rowy Poland, 2008.

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

4.d3 Bf5 5.Nd2 Be7 6.Ngf3 0-0 7.Be2 Qd7 8.c4 b6 (8...a6 9.0-0=) 9.b5 (9.0-0 Na6 10.Qb3 c6=) 9...a6= 10.a4 a5 (10...c6!?=) 11.0-0+= Qd8 12.Nh4 Bg6? (better is 12...Bc8!?+=) 13.f4+– ef4 14.ef4 h6 (14...Nfd7 15.Ng6 hg6 16.Bf3+–) 15.Ng6 fg6 16.Qe1 (16.Bf3 Nbd7+–) 16...Nh5? (16...d5 17.Bf3 Nbd7 18.cd5+–) 17.Bh5 (17.Bf3!? Ra7 18.f5 Bf6+–) 17...gh5 18.Qe6 Kh7?? (better is 18...Rf7+–) 19.Qe4 Kg8 (19...Kh8 20.Qa8 Nd7 21.Qf3+–) 20.Qa8 1–0. Pietraszko,Jakub (1605) – Siekanowicz,Agnieszka, Mistrzostwa Polski Amatorow Poland, 2012.

4.Bd3 Be7 5.e4 (5.a3 0-0 6.Be2 Re8 7.Nf3 e4 8.Nd4 c5=+; 5.Be2 0-0 6.a3 Be6 7.Nf3 a5 8.b5 Nbd7=+; 5.Nc3 d5 6.a3 a5 7.ba5 0-0 8.Be2 Nc6=+) 5...0-0 (5...Nc6 6.a3 0-0 7.Nf3 Bg4 8.0-0 Re8=+) 6.f3 (6.Nf3 Bg4 7.h3 Bh5 8.0-0 a6=+) 6...d5 (6...Be6 7.Ne2 Re8 8.a3 a5–/+) 7.ed5 (7.a3 Nbd7 8.ed5 a5–/+) 7...Qd5 ( 7...Bb4 8.c4 Re8–/+) 8.Be4?? (8.Nc3 Qd8=+) 8...Qd6 ( 8...Ne4 9.fe4 Qe4 10.Kf1 Bb4-+) 9.Ne2 Qb4?? 10.Bc3?? Qc5 11.d4 ed4 12.Bd4 Qb4 13.Nd2 Qd6 14.0-0 Ne4 15.Ne4 Qc6 16.N2c3 Bf5 17.g4 Be4 18.Ne4 Nd7 19.Qd2 Nf6 20.Nf6 Bf6-+ 21.Bf6 Qf6 22.Rad1 Rad8 23.Qb4 b6 24.Rd8 Rd8 25.g5? Qd4 26.Kh1?? Qb4 27.c3 Qc3 28.a4 Qc2 29.Re1 g6 30.f4 Rd2 31.Re8 Kg7 32.Re1 Rh2 33.Kg1 Qg2# (33...Qf2#) 0–1. ronnieg (2555) – IceBox (2405), fics, 2001.

4.d4 b6 5.de5+= (5…de5 6.Qd8 Kd8 7.a3+=). mrkt – morri, ChessWorld.net, 2003.

4.d4 Be6 5.de5 Nd5 6.ed6+= Qd6 7.a3+/- Be7 8.Bg7+– Rg8 (8...Rg8 9.Bb2 Nd7+–). undergearmalaysia – dlottis, net–chess.com, 2002.

4.d4 Bf5 5.de5 Bc2?? (better is 5...de5 6.Qd8 Kd8=) 6.Qc2+– de5 7.Be5 (7.a3 Bd6+–) 7...Bb4 8.Bc3 (8.Nc3 Nc6 9.Rd1 Qe7+–) 8...Qd6 (8...Nc6 9.Bb5 Qd5 10.Bc6 Qc6 11.Nf3+–) 9.Bb4 (9.Bb5 Nc6+–) 9...Qb4 10.Nd2 Nc6 (10...c6 11.Rb1 Qe7 12.Bd3+–) 11.Rb1 Qd6 12.Rb7 (12.Nc4 Qe7 13.Rb7 Rb8+–) 12...0-0 13.Bb5 Na5 (13...Nb4 14.Qc7 Qc7 15.Rc7 Na2 16.Bc4+–) 14.Rc7 Qe5 (14...Rfb8 15.Bd3+–) 15.Bd3 Qa1 16.Ke2 (16.Qb1 Qe5 17.Qc1 Qd5+–) 16...g6 (16...Qe5 17.Rc5 Qe6 18.Ra5+–) 17.Rc5 (better is 17.Qc3 Qc3 18.Rc3+–) 17...Rac8 (17...Nb7 18.Nb3 Nc5 19.Na1 Nd3 20.Qd3 Rfd8+–) 18.Rc8 Rc8 19.Qc8 Kg7 20.Qa8 Qa2 21.Ngf3 (21.Qa7 Nd5 22.Qd4 Nf6+–) 21...Ng4 (21...Nb3 22.Bc4+–) 22.Rc1 (22.Rb1 Qe6+–) 22...Qe6 (22...Nb3 23.Rc2 Qa4 24.Rc4+–) 23.Rc7 Qd6 (23...Nf6 24.Ke1+–) 24.Ra7 (better is 24.Qa7 Nc6 25.Qb6 Ne3 26.fe3 Qe6 27.Qc6 Qc6 28.Rc6 f5+–) 24...Nc6 25.Ra6 Qd5 26.Rc6 Qh5 27.Qd8 1–0. Rosner,Dirk – Krahl,Wolfgang, DESC, 2001.

4.d4 g6 5.de5 de5 6.Qd8 Kd8 7.Be5 Bg7 8.c3 Nc6 9.Bg3 Ne4 10.Bd3 Nc3 11.Kd2? Ne4! 12.Be4 Ba1 13.Nc3 Bc3 14.Kc3=+ Be6 15.Bc6 bc6 16.Ne2 a5 17.Nd4 ab4 18.Kb4 Ra2 19.Nc6 Ke8 20.Bh4? Kf8?? 21.Bf6= Rg8 22.Rd1 Ra8 23.Rd8 Rd8–/+ 24.Nd8 Ke8 25.Nc6 Kd7 26.Kc5 Ra8 27.Ne5 Ke8 28.Kb5 Ra2 29.f3 Rg2 30.f4 Rh2 31.e4 Re2 32.Nc4 Re4 33.Kb4 Rf4 34.Kc3 Rc4 35.Kd3 Rf4 36.Ke3 (36…Rf6 37.Kd4-+; 36.Be5 Bf5 37.Kc3 Rf3 38.Kd2-+). slavisa11 – Pakman, Live Game Caissa's Web, 2004.

4.Be2 c6 5.Nf3 Nbd7 6.d4 ed4 (6...e4!? 7.Nfd2 d5=+) 7.Qd4 Be7 8.0-0 0-0 9.a4 (9.Rd1 Re8+=) 9...c5 10.bc5 dc5 11.Qc3 b6 12.Rd1 Qc7 13.Nbd2 Bb7 14.e4 Rfe8 15.e5 Nd5 16.Qb3 Qc6 (16...Nf4 17.Bc4 Rf8 18.a5=) 17.Bc4 (better 17.Bb5 Qe6 18.Ne4+/-) 17...Rad8? (better 17...Rf8+=) 18.Ne4+- Nf8 19.Nd6! Bd6 20.Bd5 (20.Rd5?! Be7 21.Rd8 Rd8 22.Bf7 Kh8+/-) 20...Qc7 (20...Qd5 21.Rd5 (21.ed6? Qb3 22.cb3 Bf3 23.gf3 Re6-+; 21.Qd5?! Bd5 22.Rd5 Bc7=) 21...Bd5 22.Qd5 Be5 23.Qa2 Bb2 24.Qb2+-) 21.ed6 Bd5 (21...Rd6 22.Be5 Re5 23.Ne5 Rd5 24.Rd5 c4+-) 22.dc7 (22.dc7 Rd7 23.Rd5 Rc7 24.a5 ba5 25.Qb5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

4.Be2 Nd5 5.a3 Nc6 6.c4 Nf6 7.Nf3 Bg4 8.0-0 a5 (8...e4 9.Ne1 Be2 10.Qe2+=) 9.b5+= Na7 10.d4 c6 (better is 10...e4!? 11.Nfd2 Be2 12.Qe2 d5+=) 11.de5+– de5 12.Nc3 (better is 12.Be5!? Qe7 13.Bc3+–) 12...cb5 13.Nb5 Nb5 14.cb5 Qb6? (better is 14...Qd1!? 15.Rfd1 e4 16.Bf6 gf6+/-) 15.Ne5 Be2 16.Qe2 Bd6 (16...Qe6 17.Rfd1+–) 17.Rfd1 Be5 18.Be5 Nd7? (18...0-0+–) 19.Bg7 Rg8 20.Bd4 Qg6 21.g3 Rd8 22.Qf3 Nf8 (22...b6+–) 23.Qb7 Ne6 24.Qc6 Rd7 (24...Kf8+–) 25.Bb6 1–0. Fournier,Frederic (1870) – migeru (1790), Active (5/0), 2004.

4.Be2 Bd7 5.Nf3 a6 6.a4 Be7 7.0-0 0-0 8.b5 ab5 9.ab5 Ra1 10.Ba1 c6 11.bc6 Nc6 12.d3 Qb6 13.Nc3 Ra8=+ 14.Qb1 Qb1 15.Rb1 Nb4 16.Rb4 Ra1=+ 17.Bf1 Bc6–/+ 18.Rb2 h6 19.Nd2 Ra7 20.f3 Nd5 21.Nd5= Bd5 22.c4 Bc6 23.e4 Bg5 24.g3 Ra1 25.h4?? Be3-+ 26.Kg2 Bd4 27.Rb1 Ra2 0–1. tanto (1665) – sanbarrett (2090), net–chess.com, 2002.

4.Be2 e4 5.c4 (5.a3 d5=) 5...Be7 (5...Nc6 6.a3+=) 6.d3 0-0 7.Nd2 (better is 7.de4 Ne4 8.Nd2=) 7...Bf5 (better is 7...ed3!? 8.Bd3 Nc6+=) 8.de4 Ne4 (8...Bg6 9.f3+=) 9.Ne4 Be4 10.Bf3 (10.Qd4 Bf6 11.Qe4 Bb2+=) 10...Bg6 1–0. DEFFM – GuestCWXL, freechess.org, 2016.

4.Be2 Ne4 5.Nf3 Bg4 6.h3 Bf3 7.Bf3+/- Nf2? 8.Kf2+– Nd7 9.Rf1 f5 10.Kg1 e4 11.Bh5 g6 12.Bg6! hg6 13.Bh8 c5 14.a3 Qg5 15.Nc3 0-0-0 16.Qe2 Bh6 17.bc5 dc5 18.Ne4! fe4 19.Bc3 Ne5 20.Be5 Qe5 21.Rab1 Qg3 22.Qb5 Rd7 23.Qc5 Rc7 24.Qa7 Qd6 25.Qa8 Kd7 26.Rf7 Ke6 27.Rc7 Qc7 28.Qb7 Qb7 29.Rb7 Bf8 30.a4 Kd6 31.a5 Kc6 32.Rf7 Bb4 33.Rf6 Kd5 34.Rg6 Bd2 35.Kf2 Bb4 36.g4 Be7 37.a6 Bc5 38.h4 Kc4 39.h5 Ba7 40.h6 Kc3 41.h7+– Kc2 42.Kg3 Be3 43.h8Q Bd2 44.Rc6 Bc3 45.Qc3 Kb1 46.Rb6 Ka2 47.Qa5# (47.Qb2#) 1–0. babo – juancabeta, internet, 2006.

4.Be2 Bg4?? 5.Bg4+– Ne4 (5...Ng4 6.Qg4 Qd7 7.Qf3+–) 6.d3 (6.Bf3!? d5 7.Be4 de4+–) 6...Nf6 7.Be2 Nc6 (7...d5 8.a3 Nbd7 9.Nf3+–) 8.b5 Na5 (8...Ne7 9.Nf3+–) 9.Nf3 (9.Bc3 c5+–) 9...Qd7 (9...c6 10.c4+–) 10.a4 Qg4 (10...a6 11.c4+–) 11.0-0 (11.Bc3 b6 12.Ne5 Qe6+–) 11...e4 (11...Qe6 12.Bc3 b6 13.Qd2+–) 12.Nfd2 (12.de4 Ne4 13.Nfd2 Qe6 14.Ne4 Qe4+–) 12...Qg6 (12...Qe6 13.Bc3 ed3 14.Bf3+– (worse is 14.Ba5 de2 15.Qe2 0-0-0+–)) 13.Bf6 (better is 13.Bc3 b6 14.Ne4 Ne4 15.de4 Qe6+–) 13...Qf6 14.d4 d5 15.c4 c6 (15...Nc4 16.Bc4 dc4 17.Ne4+–) 16.Nc3 cb5 (16...Qe6+–) 17.Nd5 Qc6 (17...Qd8 18.ab5 f5 19.f3 ef3 20.Bf3+–) 18.Ne4 (better is 18.ab5 Qc8 19.Ra5 b6+–) 18...Nc4 (18...bc4 19.Nec3 Bd6+–) 19.ab5 (better is 19.Nec3 b4 20.Nb5+–) 19...Qd5 20.Nc3 Qe6 21.Qb3 Nd2 (21...Nd6 22.Nd5 Kd8 23.Rfd1+–) 22.Qe6 fe6 23.Rfd1 Bb4 24.Nb1 (24.Rd2?! Bc3 25.Rda2 Ba1 26.Ra1 Kd7=) 24...Nb1 25.Rdb1 (25.Rab1?! Ba5+–) 25...Bd6 26.Bg4 (better is 26.Bf3!? 0-0 27.Bb7 Rab8+–) 26...Ke7 27.Rc1 (better is 27.Ra2+–) 27...b6? (27...a6!?+/-) 28.e4 (28.Bf3!? Rac8 29.Ra7 Kf6+–) 28...Rhc8 (28...h5 29.Be2 e5 30.d5+–) 29.Rc8 Rc8 30.Ra7 Kf8 (30...Rc7 31.Rc7 Bc7 32.e5+–) 31.g3 (31.Kf1 Rc4 32.Be6 Rd4+–) 31...Rc1 (31...Rc4 32.Be6 Rd4 33.Rf7 Ke8 34.Rg7 Re4 35.Bd7 Kf8 36.Rh7+–) 32.Kg2 Re1 (32...Rc4 33.Be6 Rd4 34.Kf3+–) 33.e5 Bb4 34.Be6 Re4 (34...Bc3 35.Rf7 Ke8 36.f4 Bd4 37.Rg7 Re2 38.Kh3+–) 35.Rd7 (better is 35.Rf7!? Ke8+–) 35...Bc3 36.Bf5 (36.Rf7!? Ke8+–) 36...Rd4 37.Rd4 (37.Rc7 Be1+–) 37...Bd4 38.f4 h6 39.Kf3 Kf7 40.Ke4 (40.Bd3 Ke7+–) 40...Bg1 41.h4 Bh2 (41...Bf2 42.Kf3 Bd4 43.h5+–) 42.g4 g6 (42...Bg3 43.h5+–) 43.Bd7 Bg3 44.h5 gh5 45.gh5 Ke7 46.Kf3 (46.Bh3!? Be1+–) 46...Bh2 (46...Bh4 47.Bc6+–) 47.Bg4 Kf7 48.Ke4 Ke7 49.f5 Kf7 50.Kd5 1–0. Trkn – DoubleG, itsyourturn.com, 2000.

4.Be2 h5 5.c4 h4 6.Nf3 h3 7.gh3 Bh3 8.Ng5 Bf5 9.d3 Nfd7 10.e4 Qg5–/+ 11.ef5 Qf5 12.Bf3 c6 13.b5 Nf6 14.bc6 Nc6 15.Be4?? Qf4 16.Nd2 g6 17.Qa4 Ne4-+ 18.Ne4 Be7 19.Ba3 Qf3-+ 20.Bd6?? Qh1 21.Ke2 Qa1 22.Be7 Ke7 23.Qa3 Ke8 24.Nd6?? Kd7 25.Nf7 Nd4 26.Ke3 Nc2 27.Ke4 Na3 28.Ne5 Kd6 29.Nf7 Ke6 30.Ng5 Kf6 31.f4 Rae8 32.Kf3 Qe1 33.Ne4 Re4! 34.de4 Rh3 35.Kg2 Qe3 36.e5 Kf5 37.e6 Qf3 38.Kg1 Qg4 39.Kf2 (39…Rh2 40.Ke3 Qf4 41.Kd3 Qd2#). TIROLOCO – port, Live Game Caissa's Web, 2004.

4.Be2 h6 5.d3 Be7 6.Nf3 0-0 7.0-0 Nc6 8.b5 Nb8 9.c4 a6 10.Nc3 ab5 11.cb5 Re8 12.e4 Bd7 13.Qb3 Ra5 14.a4 c5 15.Nd5 Bg4 16.Bc3 Ra8 17.a5 Qc8?? 18.Nb6+– c4 19.dc4 Qc5 20.Na8 Nbd7 21.Nb6 Nb6 22.ab6 Ne4 23.Bb4 Qb6 24.Qd3 f5 25.Qd5 Kh8 26.Bd3 Nf6 27.Qf7 Bh5 28.Qe6 e4 29.c5 Qd8 30.cd6 Bd6 31.Qd6 ef3 32.Qd8 Rd8 33.Bf5 fg2 34.Kg2 Rd5 35.Ra8 Ng8 36.Be6 Rg5 37.Kh3 Bg4 38.Bg4 (38…Kh7 39.Be2+–) 1–0. Roookie – joe4444, Live Game Caissa's Web, 2004.

4.Ne2 Ne4 5.f3 Qh4 6.g3+/- Qh5 7.Nbc3?? Qf3-+ 8.d3 Qf2# 0–1. blackqueen – buzleclair, playchess.de, 2001.

4.Ne2 Be7 5.Ng3 0-0 6.Be2 a5 7.b5 c6 8.a4 Nbd7 9.0-0 Qb6 (9...Re8 10.Nf5=) 10.c4 d5 11.Nc3 (11.d4 Qc7+=) 11...dc4 (11...d4 12.ed4 ed4 13.Nce4=) 12.Bc4 cb5 (12...Qd8 13.Rc1=) 13.Bb5 (13.Nb5 Qd8+=) 13...Nc5 14.Ba3 Qc7 15.Rc1 Bd7? (15...b6!?=) 16.Nce4 (better 16.d4!? ed4 17.ed4+– (17.Qd4?! Rfd8=)) 16...b6+– 17.d4 ed4 18.ed4 The passed pawn on d4 will quickly become a dangerous weapon (18.Qd4?! Bb5 19.ab5 Rfd8=) 18...Nfe4 19.Ne4 Bb5 20.ab5 Qf4 (20...Qb7 21.Nc5 (21.Bc5?! bc5 22.Nc5 Qb5=) 21...bc5 22.Re1+–) 21.Ng3 (better 21.Nc5!? bc5 22.dc5+–) 21...Rfd8+= 22.Qe2 (worse 22.Bc5 Bc5 23.Ne2 Qe4=+) 22...Nb3 23.Rc4?? (better 23.Qe7 Nc1 24.Bc1 Qd4 25.Be3+=) 23...Ba3-+ 24.Qd3 a4 25.d5 Bc5 (better 25...Qd2 26.Rd1 Qd3 27.Rd3 Bb2-+) 26.Rf4+– (26.Rf4 Bd6 27.Rh4+–) 1–0. aravind555 (1725) – BigM_x (1825), lichess.org, 2020.

4.Ne2 Bf5 5.Ng3 Bg6 6.d4 e4 7.c4 d5 8.c5 Be7 9.Be2 Qd7 10.Nc3 c6 11.Qb3 h5 12.a4 h4=+ 13.Nf1 Bh5 14.b5 Be2 15.Ke2? Qg4-+ (15...Qg4 16.Ke1 Qg2 17.bc6 bc6–/+ (17...Qh1?? 18.cb7 0-0 19.ba8Q+–; 17...Nc6?! 18.Qb7 0-0 19.Qc6–/+)) 0–1. Holub,Tomas – Dvorakova,Magdalena (2015), Karvina op, 2003.

4.Ne2 g6 5.d4= ed4 (5...e4 6.c4=) 6.Nd4 Bg7 ½–½. Lorenc,Tomas – Kozeny,Pavel, CZE–chTV, 1998.

4.Qf3 Be7 5.Ne2 0-0 6.Ng3 c6 7.Nf5=+ Bf5 8.Qf5 Qd7 9.Qd3 Qe6 10.Nc3 d5 11.a3 Nbd7 12.Be2 Bd8 13.e4 d4 14.Na4 b6 15.c3 c5 16.bc5 bc5 17.cd4 cd4 18.Qb5? Bb6 19.Bc4 Qg4 20.0-0 Qe4 21.f3 Qh4 22.Nb6 ab6 23.Bd5?? Rab8 24.Bc6=+ Nc5 25.f4 Ng4 26.h3+= Nh6 27.fe5 Ne6 28.a4 Qg5 29.Ba3 Rfc8 30.Bd7 Rc2+– 31.Bd6?? Rd2 32.Qd5 Nf4?? 33.Rf4!+– Qf4 34.Rf1?? Qe3= 35.Kh1 Rd8 36.e6 fe6 37.Be6 Kh8 38.Rf8?? Rf8-+ 39.Bf8 Qg3 40.Bg7 Qg7 41.Qd8 Ng8 42.Bg4 Ra2 43.Qa8 d3 44.Qd5 Ra4 45.Qd3 Ra8 46.Qd6 b5 47.Bf3 Ra7 48.Qc5 b4 49.Qb4 Qe5 50.Be4 Rc7 51.Qb1 Ra7 52.Qb4 Rc7 53.h4?? Rc1 (54.Qe1 Re1#) 0–1. cagey – wingchunchess, Live Game Caissa's Web, 2004.

4.Nf3 Na6 5.b5 (5.a3 Nb8=) 5...Nc5 6.d4 ed4 7.ed4 Opening the e–file gets Black a lot of play (7.Bd4 Ne6=) 7...Na4 8.Ba3 (8.Bc1 d5=) 8...Bg4 (8...Qe7 9.Be2=) 9.Be2 g6 (9...Be7 10.0-0=) 10.c4 (10.0-0 Bg7+=) 10...Nb6 11.Qb3 (11.0-0 Bg7+=) 11...Bg7= 12.Nbd2 (12.0-0 0-0=) 12...0-0 13.0-0 Re8 14.h3 (better is 14.Rfe1!?=) 14...Re2 (14...Bh3 15.Rfe1 Bf5 16.Bb2–/+) 15.hg4 Ng4 16.c5 (16.Rae1 Re1 17.Re1 a6–/+) 16...Nd7 (better is 16...dc5 17.Bc5 Qd7–/+) 17.Ng5?? (better is 17.Qc4 Re6 18.Rae1 Re1 19.Re1 dc5 20.Bc5+=) 17...Qg5-+ (17...Rd2 18.Qf7 Kh8 19.Ne6+=) 18.Nf3 Qf4 19.Bc1 (19.Qd5 Rae8 20.cd6 cd6 21.Bd6 Qe4 22.Qe4 R8e4-+) 19...Qe4 20.Bg5 (20.cd6 Bd4 21.Nd4 Qd4-+) 20...Qf5 (20...Qf5 21.cd6 cd6-+; better is 20...Bd4 21.Nd4 Qd4 22.c6 Rf2 23.Kh1 bc6 24.bc6-+) 0–1. Trkn – J.S.A.S., itsyourturn.com, 2001.

4.Nf3 b5 5.Bb5+/- Bd7 6.Be2 Be7 (6...e4 7.Nd4 a5 8.b5 c5 9.bc6 Nc6 10.Na3 Be7; 6...a6 7.Nc3 Nc6 8.a3 d5 9.d4 e4 10.Ne5 Bd6) 7.c4 (7.Nc3 a6+/- 8.a4 Nc6 9.b5 Nb4 10.Ba3 c5) 7...0-0 (7...e4 8.Nd4 c5 9.bc5 dc5 10.Nb3+/- 0-0) 8.0-0 (8.Nc3 a6+/- (8...h6 9.Qc2 Na6 10.a3 c5) 9.0-0 Nc6 10.b5 ab5) 8...Bc6 (better is 8...e4!? 9.Ne1 (9.Nd4 c5 10.bc5 dc5) 9...Be6+/- (9...Na6 10.a3 c5) 10.f4 g6) 9.d4 (9.Nc3 Nbd7 10.Qc2 h6) 9...e4 (9...Nbd7 10.Nc3+– h6) 10.Nfd2 d5 11.b5 Bb7 12.c5 c6 13.a4 Nbd7 14.Nc3 h6 (14...Rb8 15.Qc2+–) 15.Qc2 Rc8 (15...Rb8 16.Rab1+–) 16.Rfb1 Ba8 (16...Re8 17.bc6 Rc6 18.Ba3+–) 17.Bc1 (17.Na2 Nh7+–) 17...cb5 (17...Re8 18.Ba3+–) 18.ab5 Qc7 (18...Nc5 19.dc5 Bc5 20.Ra4+–) 19.Qa2 (19.c6 Nb8+–) 19...a6 (19...Nc5 20.dc5 Bc5 21.Na4+–) 20.Qa6 (20.ba6 Nb8+–) 20...Bb7 (20...Nc5 21.dc5 Bc5 22.b6 Bb6 23.Nb5+–) 21.Qa2 (21.Qa5 Qa5 22.Ra5 Nc5 23.dc5 Bc5+–) 21...Ra8 (21...Nc5 22.b6 Qd7 23.dc5 Bc5 24.Na4+–) 22.Qb2 (22.Qc2 Ra1 23.Ra1 Ra8 24.Ra8 Ba8+–) 22...Ra1 (22...Nc5 23.dc5 Bc5 24.Nb3+–) 23.Ra1 Ba8 (23...Nc5 24.dc5 Bc5 25.Nb3+–) 24.Qa2 (24.b6 Qb8 25.Ra7 Nc5 26.Re7 Ncd7+–) 24...Qb7 (24...Rb8 25.Qc2+–) 25.Nb3 (25.c6 Qc7 26.Qa7 Qc8+–) 25...Rc8 (25...Rb8 26.c6 Qc8 27.cd7 Qc3 28.Ba3 Ba3 29.Qa3+–) 26.Qa7 (26.c6!? Qb8 27.cd7 Nd7+–) 26...Qa7 (26...Qb8 27.Qb8 Rb8 28.Ra7+–) 27.Ra7 Bd8 28.Na4 Kf8 (28...h5 29.Bd2 Kf8 30.Ba5+–) 29.Ba3 Ke8 (29...Kg8+–) 30.c6 Nb6 (30...Bc6 31.bc6 Rc6 32.Nbc5+–) 31.Nb6 Bb6 32.Re7 Kd8 33.Rf7 Bc6 34.bc6 Rc6 35.Rg7 1–0. Franke,Roland – Denecke,Alfred, Bahn–chT Fuessen, 1993.

4.Nf3 c5 5.b5 b6 6.Be2 Be7 7.0-0 0-0 8.c4 Be6 9.d3 e4 10.Nfd2 ed3 11.Bd3 Nbd7 12.Nc3 Ne5 13.Be2 d5 14.Nd5+/- Nc4?? 15.Ne7+– Qe7 16.Nc4 Ne4 17.Ne5 Qg5 18.Nf3 Qg6 19.g3 Rfd8 20.Qe1 Bg4?? 21.Qc1 Rd5?? 22.Re1 Bf3? 23.Bf3+– Rad8 24.Qc2 f5?? 25.Red1 Rd2 26.Rd2 Rd2 27.Qb3 Kf8?! 28.Be4 fe4 29.Qc3 Qf7 (29...Rd7+–) 1–0. valpa – schachsky, playchess.de, 2003.

4.f4 Nc6 5.b5= Ne7 (5...Nb4 6.fe5 de5 7.a3 Nbd5 8.Be5 Ng4=) 6.fe5 de5 7.Be5 Ng6 8.Bb2 (8.Bd4 Bd6+=) 8...Bd6 9.Nf3 Bg4 10.Be2 0-0 11.0-0 Qd7 (better is 11...Re8!?+/-) 12.Bf6+– gf6 13.Nc3 Kh8 14.Rf2 Rg8 (14...f5 15.h3 Bh5 16.Nd4 Be2 17.Qe2+–) 15.Ne4 Qe6 16.Nd6 Qd6 17.Nd4 Ne5 18.Qf1 Rg6 19.Bg4 Ng4 20.Rf4 Rag8 21.g3 Rg5 22.Nf3 R5g6 23.Qc4 Ne5 24.Ne5 Qe5 (24...fe5 25.Rf7 Qd2 26.Qe4+– (26.Qc7 Rg3 27.hg3 Rg3 28.Kf1 Qg2 29.Ke1 Re3 30.Kd1 Qe2 31.Kc1 Qe1 32.Kb2 Qb4 33.Kc1 Re1)) 25.Raf1 Qe7 26.Qd4 Rd8 27.Qc3 Kg7 28.Rd4 Rd4 29.Qd4 Qa3 30.Qc4 Qa5 31.Qd4 (31.d3!? Qd2 32.e4 Rh6+–) 31...Qa2 (31...Qa3 32.Qd5 Qa5+–) 32.Qc3 Qd5 33.Rb1 (33.Qc7 Qd2 34.Qb7 Qe3 35.Kg2 Rg5+=) 33...Qd6 34.Qd4 (34.Rb2 h5 35.Qb4 Qd7+=) 34...Qd4 (34...Rg3 35.hg3 Qg3 36.Kh1 Qh3 37.Kg1 Qg3 38.Kf1 Qf3 39.Kg1 Qg3=) 35.ed4+= b6 (better is 35...f5!?+=) 36.Ra1+– f5 37.Ra7 Rd6 (37...f4 38.Rc7 fg3 39.hg3+–) 38.Ra4 (38.c3 c6 39.bc6 Rc6+–) 38...Kf6 (38...Rd5!?+/-) 39.Kf2+– Ke6 40.Ke3 Kd5 (40...Kd7 41.Ra1+–) 41.c4 Ke6 42.Ra1 Kf6 43.d3 Re6 44.Kd2 Rd6 45.Kc3 Re6 (45...Ke7 46.Ra7 Kd7 47.Ra2+–) 46.Ra7 Re7 47.c5 Ke6 48.Kc4 Rd7 (48...Kf6 49.cb6 cb6 50.Re7 Ke7 51.Kd5+–) 49.cb6 (better is 49.d5 Rd5 50.Rc7+–) 49...cb6 50.Rd7 Kd7 51.Kd5 f6 52.h3 h5?? (52...h6 53.g4 fg4 54.hg4 f5 55.gf5 h5+–) 53.h4 f4 54.gf4 f5 55.Ke5 Ke7 56.Kf5 Kf7 57.d5 Ke7 58.Ke5 Kd7 59.f5 (59.d6 Kd8 60.f5 Kd7 61.f6 Kc8 62.f7 Kd7 63.d4 Kc8 64.f8Q Kb7 65.Qe7 Kb8 66.d7 Kc7 67.d8Q) 59...Ke7 (59...Kc7 60.d6 Kd7 61.f6 Kc8 62.f7 Kd7 63.d4 Kc8 64.f8Q Kb7 65.Qe7 Kb8 66.d7 Kc7 67.d8Q) 60.f6 Kd7 61.d6 Ke8 (61...Kc8 62.f7 Kb7 63.f8Q Ka7 64.Qe7 Kb8 65.d7 Kc7 66.d8Q) 62.Ke6 Kd8 63.f7 Kc8 64.f8Q Kb7 65.Kd7 (65.Qe7 Kb8 66.d7 Kc7 67.d8Q) 65...Ka7 66.Qf7 (66.Kc8 Ka8 67.Qf3 Ka7 68.Qb7) 66...Kb8 (66...Kb7 67.Ke8 Kb8 68.d7 Kc7 69.d8Q) 67.Kd8 (67.Kc6 Kc8 68.Qe8) 67...Ka8 1–0. Gumpert,Christian – Starostin,Ewgenij, GER–chT U13 Wilhelmshaven, 1998.

4.f4 Qe7 5.Be2 Nc6 6.b5 Nb8 7.d3 c6 8.e4 cb5 9.Nf3 ef4 10.0-0 Bg4 11.Re1 Bf3 12.Bf3= g5?? 13.e5+– Kd8 14.ef6 Qc7 15.Qe2 Bh6 16.Ba3 Nc6 17.Nd2 Kc8 18.Ne4 b6 19.Bg4 Kb7 20.Nd6 Ka6 21.c4 Nd4 22.cb5 Ka5 23.Qd2 Ka4 24.Qb4# 1–0. chevin – dadeetdeetbleep, Live Game Caissa's Web, 2004.

4.g3 (--> 1.b4 e5 2.Bb2 d6 3.g3 Nf6 4.e3).

4.h3 Bf5 5.Nf3 Be7 6.d3 0-0 7.a3 c6 8.e4 Bg6 9.Nh4 Nfd7 (9...Bh5 10.g4 Bg6 11.Ng6 fg6 12.Nd2=) 10.Ng6= fg6 11.Nd2 Bh4 12.g3 Qf6 13.Qe2 Bg5 14.Rh2 Nb6 15.0-0-0 (15.f4 Bh6 16.a4 Qe7 17.fe5 N8d7=) 15...Na4 16.Ba1 a5 17.f4 Bf4 (better is 17...Bh6!?+=) 18.gf4+/- Qe6 (18...Qf4 19.ba5 Ra5 20.Kb1+/-) 19.Nb3 (19.d4 ab4 20.Qc4 d5 21.Qb4 ef4 22.Qb7 Nd7+–) 19...ab4+/- 20.ab4 (20.fe5 ba3 21.Qg4+/-) 20...c5? (20...Rf4 21.d4 ed4 22.Nd4+/-) 21.bc5 (better is 21.fe5 de5 22.Kd2 cb4 23.d4+–) 21...Nc5+= 22.Nc5?? (better is 22.Bc3 Nb3 23.cb3+=) 22...Ra1–/+ 23.Kd2 Rd1 24.Kd1 dc5 25.fe5 Qe5 26.Rf2 Rf2 27.Qf2 Qd4 28.Qd4= cd4 29.c4 dc3 30.Kc2= Kf7 31.Kc3 Ke6 32.d4 h5 33.Bg2 g5+= 34.Kc4 Nd7 35.Bf3+= g6 36.Bd1 b6 37.Kb5 Kd6 38.Bb3 g4 39.hg4 hg4 40.Bd1 g3 41.Bf3 g5 42.d5? g4! 43.Bg2 Kc7 ½–½. Romsdal,Svein Erik – Laitamaa,Melker, Barents Region–chC, 2004.

4.h4 Be6 5.Nf3 Be7 6.Be2 0-0 7.c4 Nbd7 8.d4 ed4 (8...Bg4 9.Nc3=+) 9.Nd4= c5 10.bc5 Nc5 11.Nc3 a6 (11...Nfe4 12.h5=) 12.h5= Rc8 13.Rb1 b6 14.h6 g6 15.0-0 Nfe4 (15...Qc7 16.Nd5 Nd5 17.Ne6 fe6 18.cd5=) 16.Ne4+= Ne4 The isolani on c4 becomes a target 17.Ne6 (17.Bf3 Nc5+=) 17...fe6 18.Qd4 Nf6 19.Ba3 Rb8 20.Rfd1 e5 21.Qd3 Nd7? (better 21...Ne8!?+–) 22.Bd6+– Bd6 23.Qd6 (23.Qd6 Nc5 24.Qe5+–) 1–0. Pereira – Marekt, internet, 2020.

4.h4 Be7 5.h5 Nc6 6.b5 Nb4 7.a3 Nbd5 8.c4 Nb6 9.h6 gh6 10.Nc3 Be6 11.d3 Ng4 12.Be2 Rg8 13.Bf3 Qc8 14.Nge2 a6 15.ba6 Ra6 16.a4 Ra5 17.Ba3 Ra8 18.Rb1 f5 19.Bb4 Rg6 20.a5 Nd7 21.Nd5 Bd8 22.e4 (22.0-0) 22...f4 23.Qd2 (better is 23.d4) 23...c6 24.Ndf4 ef4 25.Nf4 Bg5 26.Bd6 Nde5 27.Be2 Qd8 28.Be5 Ne5 29.g3 Rg7 30.Qc3 Qf6 31.Bh5 Bf7 32.Kf1 Bf4 33.gf4 Qf4 34.Rh3 Bh5 35.Rh5 Ng4 36.Rb2 Rf7 37.Ke1 Rd8 38.Rf5 Rf5 39.ef5 Rd4 40.Kf1 Kd8 41.Re2 Nh2 42.Ke1 Nf3 43.Kd1 Qf5 44.Re3 Rd7 45.Kc1 Kc8 46.d4 Qf4 47.d5 cd5 48.Kb1 d4 49.Rf3 dc3?! (better is 49...Qe4 50.Qd3 Qe1 51.Kc2 Qa5) 50.Rf4 Rd1 51.Kc2 Rd2 52.Kc3 Ra2 53.Rf5 Kd7 54.f4 ½–½. Wall,Bill – Guest1253500, playchess.com, 2012.

4.h4 Bf5 5.Be2 Be7 6.g4 Be6 7.Nc3 0-0 8.g5 Nd5 9.Nd5 Bd5 10.Bf3 Bf3 11.Qf3 c6 12.Ne2 g6 13.c4 Nd7 14.Qh3 d5? (better is 14...f5) 15.h5 Bg5 16.hg6 Nf6 17.gh7 Kh8 18.Be5 Qc8 19.Qg3 Qf5 20.Bd4 Qg6 21.Rg1 Bh6 22.Qh4 Qh7 23.Bf6 1–0. Wall,Bill – BRJZ, FICS, 2012.

4.h4 h5 5.Nf3 a6 6.a3 Nc6 7.d4 e4 8.Ng5 Bg4 9.f3 Bf5 10.fe4 Be4 (worse 10...Ne4 11.Qf3 Ng5 12.Qf5+–) 11.Ne4 Ne4 12.Bd3 d5 13.Be4 de4 14.d5 Ne7 15.c4 g6?? (better 15...Nf5 16.Qa4 b5 17.cb5 Ne3 18.ba6 Qd7 19.Qd7 Kd7=) 16.Bh8+– 1–0. Pereira – Marekt, internet, 2020.

4.a3

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

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

4.a3 Be7 5.Be2 0-0 6.c4 (---> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4 0-0 6.Be2).

4.b5 d5

5.Be5 Bd6 6.Bd6 Qd6 7.Nf3 h6 8.Bd3 0-0 9.0-0 Bg4 10.Be2 Ne4 11.d3 Nf6 12.Nbd2 c6 13.c4 dc4 14.Nc4 Qc5 15.a4 Nd5 16.d4 Qe7 17.Nce5 Nc3 18.Qc2 Ne2 19.Qe2 Bf5 20.e4 Bh7 21.Rfe1 f6 22.Qc4 Kh8 23.Nd3 cb5 24.ab5 Nd7 (24...a6 25.Qc5 Re8 26.Qe7 Re7 27.Nd2+-) 25.e5 (25.Qc7!? Rfe8+-) 25...fe5 26.Nde5 Ne5 27.Ne5 Qf6 28.f3 Rac8 (28...a6 29.Nd7 Qf7 30.Qf7 Rf7 31.Nc5+-) 29.Qb3 (29.Qb4 Bf5 30.Ra7 Qb6+-) 29...Bg8 (29...a6!?+/-) 30.Qb1+- Rb8?? (30...Rfd8 31.Ra7 Rb8+-) 31.Ng6 Kh7 32.Nf8 Kh8 33.Ng6 Kh7 34.Ne5 Kh8 35.Ra7 Bh7 (35...Qb6 36.Ra4 Rd8 37.Ng6 Kh7 38.Nf8 Kh8 39.Re6+-) 36.Qa1 Bf5 37.g4 Bc8 (37...Be6 38.Rb7! Rb7 39.Qa8 Bg8 40.Qb7+-) 38.Ra8 (38.Ra8 Ra8 39.Qa8+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Be5 Nbd7 6.Bb2 Bb4 7.Nf3 c5 8.c4 0-0 9.a3 Ba5 10.cd5 Nb6 11.Be2 Bf5 12.0-0 Qd5 (12...Nfd5 13.Nc3+–) 13.d3 (better 13.Bf6 gf6 14.Nc3+–) 13...Rad8? (better 13...Qe6+–) 14.Bf6+– gf6 15.e4 Be4 16.de4 Qe4 17.Nbd2 Qg4 (17...Qf4 18.Ra2+–) 18.Re1 Kh8 19.Qc2 Rg8 20.Bf1 Nd5 (20...Qg6 21.Rac1+–) 21.Re4 (21.Qc5?! Nf4 22.g3 Bd2 23.Nd2 Rd2 24.Qa7 Qf3+–) 21...Qg6 (21...Nf4 22.g3+–) 22.Nh4 (22.Qc5 f5 23.Rh4 Qf6+–) 22...Qg7 (22...Qh5 23.Ndf3+–) 23.Nb3 Nc3 (23...Bb6+–) 24.Rc4 (24.Re3 Bc7 25.Rc3 Be5+–) 24...Nb5 25.Rc5 (25.Nf5 Qg5 26.f4 Qg4+–) 25...Nd4 (25...Na3 26.Ra3 Bb4 27.Ra4 Bc5 28.Qc5+–) 26.Nd4 (26.Na5? Nc2 27.Rc2 Qg5 28.Nb7 Rd7-+ (28...Qh4?! 29.Nd8 Rd8 30.Re1=+)) 26...Rd4 27.Nf5 (27.Nf5 Rd2 28.Qe4+–) 1–0. onur604 (2315) – MaxNirnas (2220), lichess.org, 2020.

4.Bc4 a6

5.a3 d5 6.Be2 Bd6+=.

5.a4 c6 6.Ne2 Be6 (6...d5 7.Ba2+=) 7.Na3 (7.Be6 fe6 8.0-0 Be7=) 7...b5 (better is 7...d5!? 8.Bb3 Nbd7+=) 8.Be6+= fe6 9.ab5 (9.f4 Be7+=) 9...ab5= 10.c3 (10.f4 Be7=) 10...d5 11.0-0 Bd6 (better is 11...Be7!?=) 12.Nb5+= Ra1 (12...cb5 13.Ra8 Discovered attack) 13.Nd6 Qd6 14.Qa1 0-0 15.Ba3 (15.c4 A) 15...Qb4? 16.Ba3 Qd2 17.Bf8 Qe2 18.Be7+– (18.Qe5?! Nbd7 19.Qe6 Kf8=); B) 15...Nbd7+/-) 15...Qd8 (15...Nbd7 16.b5 c5 17.d3+=) 16.Qb2 e4 17.b5 Re8 18.b6 Nbd7 (18...Nfd7 19.Rb1 Ne5 20.Qa2+=) 19.Rb1 (19.b7 Nb6+/-) 19...Qb8 (19...Ng4 20.h3 Nge5 21.b7=) 20.h3 (20.c4+/-) 20...c5? (better is 20...Ne5!?+=) 21.Qb5+– Rf8 (better is 21...c4+–) 22.Bc5 Nc5 23.Qc5 Rf7 (23...Rc8 24.Qe7 Re8 25.Qc7+–) 24.Nd4 Nd7 (24...Rb7 25.Ne6 Kh8 26.Qc6+–) 25.Qc7 White intends b7 25...Qf8 (25...Qe8 26.b7 Nb8 27.Qc8+–) 26.Ne6 (26.b7 Nb8 27.Qc8 Re7 28.Ne6 Qe8+–) 26...Qb8 (26...Qe8 27.Nc5 Nb8 28.Qd6+–) 27.b7 (better is 27.Nc5 Qe8 28.Qc6 Qe7 29.Nd7 Qd7 30.Qa8 Rf8+–) 27...Qc7 28.Nc7 h6 (28...Nb8 29.Nd5 Kf8 30.f3 ef3 31.gf3+–) 29.Nd5 1–0. Cerami,Giuseppe (1795) – Laudicina,Mariangela, 4th Nicolo La Rosa op, 2006.

5.a4 d5 6.Be2–/+.

5.d3? Nc6 (better is 5...d5!? 6.Bb3 Bb4 7.Nd2 Nbd7–/+) 6.a3+= Bg4 7.Nf3 d5 (7...d5 8.Bb3 Bd6+=). MiserableBoris – pinski, ChessWorld.net, 2005.

4.Bb5 Bd7

5.Be2 Be7 6.a4 0-0 7.c4 a6 8.Nf3 Bg4 9.0-0 Nbd7 10.b5 ab5 11.ab5 Ra1 12.Ba1 Nb6 13.d3 e4 14.Nd4 Be2 15.Ne2 ed3 16.Qd3 Qa8 17.Nd2 Nbd7 18.Nf3 b6 19.Bd4 Nc5 20.Ra1?? Qc8 21.Nf4?? Nfd7 22.Nd5 Nd3 23.Ne7 Kh8 24.Nc8 Rc8 25.Ra7 N7c5 26.h3 f6 27.Nh4 Ne6 28.Nf5 Nd4 29.Nd4 Ne5 30.Ne6 Nc4 31.Nc7 Ne5 32.Nd5 h6 33.Nb6 Rc1 34.Kh2 Rb1 35.Ra5 Nd3 36.f3 Nc5 37.Nc4 d5 38.Nd6 Nd3 39.Ra8 Kh7 40.Rb8 Ne5? 41.b6 Nd7 42.Rb7 Nc5 43.Rb8?? Na6 44.Rb7 Nc5+– 45.Rb8?? Nd7+/- 46.Rb7 Nc5= 47.Rb8?? (better is 47.Rc7 Rb6 48.Ne8+– (48.Rc5?! Rd6 49.g4 Re6=)) ½–½. GULP – Schnick, Live Game Caissa's Web, 2004.

5.Be2 Be7 6.b5 0-0 7.a4 c6 8.Nf3 Re8 9.0-0 a6 10.c4 cb5 11.ab5= Be6 12.d3 Nbd7 13.e4 Nc5 14.Nbd2 Qb6 15.Qc2 ab5 16.Ra8 Ra8=+ 17.Rb1 Qc6 18.cb5= Qb6 19.d4+= ed4 20.Bd4 d5 21.e5+= Nfe4 22.Ne4 de4 23.Nd2 Qa7 24.Ra1 Qb6?? 25.Ra8+– Bf8 26.Bc5 (26.Bc5 h5 27.Rf8 Kh7 28.Bb6+–) 1–0. ZMeB4 (1690) – goldenbear3500 (1615), caissa.com, 2007.

5.Be2 Be7 6.b5 0-0 7.Nf3 c6 8.a4 cb5 9.ab5= b6 10.c4 Bg4 11.d3 Qd7 12.e4 Qe6 13.0-0 Nbd7 14.Ng5+/- Be2 15.Ne6 Bd1 16.Nf8 Rf8? 17.Rd1+– h6 18.Ra7 (18.Ra7 Kh7 19.d4+–) 1–0. ProdigalSon – bigpopaeIII, Live Game Caissa's Web, 2004.

5.Be2 g6 6.Nf3 Bg7 7.0-0 0-0 8.d3 b5 9.e4 Nc6 10.a3 a6 11.Nbd2 Bg4 12.c4 Bf3 13.Nf3 bc4 14.dc4 Ne7 15.Nd2 Nc6 16.Qc2 Nd4 17.Qd1 Ne2 18.Qe2+= c6 19.f3 c5 20.Nb3 Nh5 21.bc5+= Nf4 22.cd6?? Ne2-+ 23.Kf2 Nd4 24.Nc5 Qd6 25.Nd3 Qc7 26.c5 Nb3 27.Rab1 Nd2 28.Be5 Qd8 29.Bg7 Kg7 30.Rb6 Nf1 31.Kf1 Qd3 32.Kf2 h5 33.Rd6 Qc2 34.Kg3 Qc5 35.Rd5 Qc6 36.h4 Rab8 37.Kf4 Rb3 38.g4 Qf6 39.Kg3 Qf3 40.Kh2 Rb2 41.Kg1 Rb1 42.Kh2 Rb2 43.Kg1 Qg3 44.Kf1 Rb1 45.Ke2-+ Rb2 46.Rd2?? Qg2 47.Kd3 Rd2 48.Kc4 Rc8 49.Kb4 Rb2 50.Ka4 (50.Ka4 Qd2 51.gh5 Rc4#) 0–1. ZZMeB4 (1650) – darkpawn, caissa.com, 2007.

4.Nc3 d5

5.a3 a5 6.Nf3 Nbd7 7.ba5 Ra5 8.Bb5 =+.

5.a3 a5 6.Nf3 e4 7.Ne5 (7.Nd4 Bd6=+) 7...Bd6–/+ 8.Na2 0-0 9.Be2 Qe7 ( 9...Re8 10.f4 Nbd7 11.Nd7 Bd7=+) 10.Ng4? ( 10.f4!?=+) 10...Ng4-+ 11.Bg4 Bg4 (11...Qg5 12.Bc8 Rc8–/+) 12.Qg4–/+ f5 13.Qd1 (13.Qe2 c6–/+) 13...Nd7 (13...Qg5 14.g3–/+) 14.Nc3 c6 15.b5 Rab8 (15...Qg5 16.0-0–/+) 16.d4 (16.0-0 Nb6=+) 16...ed3 (16...Nb6 17.Qh5–/+) 17.Qd3 (17.cd3!? f4 18.e4–/+) 17...Ne5 18.Qd4 (18.Qe2 Nc4 19.Ra2 Nb2 20.Rb2 Ba3-+) 18...Nc4 (18...Qg5 19.Kf1 Nc4 20.Ra2-+) 19.Nd5 ( 19.Bc1!?–/+) 19...cd5-+ 20.Qd5 Qf7 21.Qf7 Rf7 22.Bc1 (22.0-0-0 Ba3 23.Ba3 Na3-+) 22...f4 (22...Rd7 23.Ke2-+) 23.e4 Be5 (24.Rb1 Rc8-+) 0–1. Julius – Bradley,Joseph, ICCF Chessfriends C1, 1996.

5.a3 c6 6.d4 (6.Nf3 Bd6=) 6...e4+= 7.Nge2 Bd6 8.Nf4 Nbd7 (8...0-0 9.Be2+=) 9.Be2 Qc7 (9...0-0 10.b5+=) 10.g3 (10.b5 a6 11.bc6 Qc6+=) 10...Nb6 (10...b5 11.0-0–/+) 11.h3 (11.0-0 0-0–/+) 11...h5 (11...0-0 12.b5–/+) 12.h4 (12.b5 h4 13.g4 g5+=) 12...Bg4 13.0-0 (13.Rb1 Nc4–/+) 13...Nc4 Black gets in control 14.Bc1 (14.Rb1 a5–/+) 14...Qc8 (14...0-0-0 15.Rb1–/+) 15.Nb1 Be2 16.Qe2 Qf5 17.Nd2 g5 (17...Nd2 18.Bd2 g5 19.Ng2-+) 18.Nc4 dc4 19.hg5 (19.Ng2 Qh3 20.f4 Ng4-+) 19...Qg5-+ 20.Qc4 h4 21.Qe2 (21.Kg2 Rg8-+) 21...0-0-0 22.g4 (22.Qc4 hg3 23.Nh3 Qh4 24.Qe6 fe6 25.fg3 Qg3 26.Kh1 Rh3) 22...Ng4 23.Kh1 (23.Nh3 Qf5 24.Nf4 Rhg8-+) 23...Bf4 (23...Nf6 24.f3-+) 24.ef4 Qf5 25.f3 Ne5! 26.fe5 (26.de5 Qh3) 26...Qh3 27.Kg1 Rhg8 (better is 27...e3!? 28.Rf2 ef2 29.Kf2 Rd4 30.Be3 Qg3 31.Kf1-+) 28.Kf2 Rg2 29.Ke3 Re2 30.Ke2 ef3 31.Rf3 Qg2 32.Ke3 Qg1 33.Rf2 Qg3 34.Ke2 Qg4 35.Rf3 Qd4 36.Be3 Qa1 (36...Qa1 37.Rf7 Qd1 38.Kf2 h3-+) 0–1. Munkwitz,Wolfgang (1615) – Blankenberg,Bruno (2440), TT–15.34 ETC, 2005.

5.Nf3 =+.

4.Nc3 Be6

5.d4 ed4+= 6.ed4 d5 7.a3 Bf5 8.Nf3 h6 (8...a5 9.ba5 Be7 10.Bd3 Bd3 11.Qd3 Ra5 12.0-0+=) 9.Be2 Bd6 10.0-0 0-0 11.Nb5 Ne4 12.Nd6 Qd6 13.c4 c6 14.c5 Qe7 15.Ne5 Nd7 16.f4 Qd8 17.Qc1 Re8 18.Bh5 g6 (18...Re7!?+=) 19.Bf3= Ne5 (19...f6 20.Be4 Be4 21.Ng4+=) 20.fe5+= Qg5 21.Qe1 Qd2 22.Bc1 (better is 22.Rb1+=) 22...Qd4–/+ 23.Be3 Qe5 24.Bh6 Qc3 25.Qh4 Qf6 26.Qf6 Nf6 27.h3 Re6 28.Rad1 Rae8 29.Rd4 Be4 30.Bd1 Nd7 31.Bg4 (31.Bf4 b6 32.Bd6 a5–/+) 31...f5-+ 32.Bd1 Ne5 33.Bb3 Bd3 34.Rf2 Bc4 35.Bc2 Nf7 36.Bd2 Re2 37.Re2 Re2 38.Bd1 Re4 39.Bc3 Rd4 40.Bd4 Kf8 41.Kf2 Ke7 42.g4 fg4 43.Bg4 Kd8 44.Bf6 Kc7 (44...Ke8!?+=) 45.Be6+= Nh6 46.Be5 (46.Bg5 Nf5+=) 46...Kd8= 47.Bb8 a6 (47...Ke7 48.Bc8 b5 49.Ba7=) 48.Ba7 (48.Bf4 Ke7 49.Bc8 Nf7+=) 48...Kc7 (48...a5 49.ba5 Ba6 50.Ke3+=) 49.Bb6= Kb8 50.Bd8 Bd3 51.Bg5 Nf5 52.Bf4 Ka7 53.Bf7 Ne7 ½–½. Nouali,Djouher (1720) – Maouchi,Amina, Algiers ALG, Women Ch, 2013.

5.Nf3 Nc6=+.

5.Nf3 Be7=.

5.h3 d5 6.Nf3=+.

5.h3 Nbd7 6.a4 (6.d4 c6+=) 6...c6 (6...d5 7.b5–/+) 7.Nge2 (7.Nf3 d5 8.b5 Bb4+=) 7...d5–/+ 8.Na2 (8.b5 Bd6–/+) 8...a6 (8...Bd6 9.d4–/+) 9.Ng3 (9.d4 Bd6+=) 9...Bd6–/+ 10.Be2 0-0 11.0-0 Nb6 (11...Qc7 12.a5–/+) 12.a5+= Nbd7 13.Rc1 (13.d4 e4+=) 13...c5–/+ 14.c3 d4 (14...b6 15.d4–/+) 15.Qa4 de3 16.de3 Opening the d–file gets White a lot of play 16...Ba2 (16...b5!? 17.Qa3 e4–/+) 17.Qa2= cb4 18.Rfd1 bc3 (18...b3 19.Qb3 Nc5 20.Qb4+=) 19.Bc3+= Qe7?? (better is 19...Qb8+=) 20.Nf5+– Qe6 (20...Qd8 21.Nd6 (worse is 21.Rd6 Ne4+–) 21...Rb8 22.Bc4+–) 21.Qe6 fe6 22.Nd6 (22.Rd6?! ef5 23.Bc4 Kh8+/-) 22...b5 23.ab6 Nb6 24.Be5 (24.Ra1 Nfd5 25.Be5 Nd7+–) 24...a5 (24...Nfd7 25.Bb2 Rfd8 26.Bg4+–) 25.Rc6 (25.Rc7 Nbd5 26.Rb7 Rab8+–) 25...Nfd7 (25...Nbd7 26.Bf6 Rf6 27.Ne4+–) 26.Bb2 a4 (26...Rfb8 27.Bg4 Nf8 28.Rc7+–) 27.Ba3 (27.Bg4 e5+–) 27...Rf6 (27...Rfb8 28.Rc7+–) 28.Bg4 Rb8 (28...h5 29.Bh5 e5 30.Bf3+–) 29.Ne4 Rg6 (29...Rf5 30.Rcd6+–) 30.Be6 Kh8 (30...Re6 31.Re6 h5 32.Bb2+–) 31.h4 (better is 31.Bd7 Nd7 32.Rg6 Nf6 33.Rf6 gf6+–) 31...Ne5 (31...Re6 32.Re6 Kg8 33.Red6+–) 32.Rb6! (32.Rb6 Re8 33.h5+–) 1–0. Zivkovic,Sam – Gunawan,Andy, AUS–ch reserves, 2002.

4.Nc3 Be7

5.Bd3 0-0 6.h3 (6.Nf3 Bg4+=) 6...Be6 (6...d5 7.a3 Be6–/+) 7.Qf3? (7.Nf3 Nfd7+=) 7...c6 (7...d5 8.Qg3–/+) 8.Nge2 (better is 8.Bf5!?+=) 8...d5-+ 9.Ng3 e4 10.Nce4 de4 (10...Ne4?! 11.Ne4 Nd7 12.Qg3+=) 11.Ne4 Nbd7 12.g4 (12.0-0 a5 (worse is 12...Bb4 13.Nf6 Nf6 14.Bf6 Qf6 15.Qe4+=) 13.ba5 Ra5-+) 12...Ne4 (12...Bd5 13.a3-+) 13.Qe4 g6 14.Rg1 Bd5 15.Qf4 Bf6 16.c3 (better is 16.Bf6 Nf6 17.g5-+) 16...Be5 17.Qh6 Re8 (17...Bh2 18.c4 Ne5 19.Be5 Be5 20.Rc1-+) 18.g5 Bg7 19.Qh4 Ne5 20.Be2 Bc4! 21.Rg4?? (21.Bc4 Nf3 Double attack) 21...Nd3 (better is 21...Be2 22.Rd4 Nf3 23.Ke2 Nh4 24.Rd8 Rad8-+) 22.Bd3 Qd3?? (better is 22...Bd3 23.Rg3 a5-+) 23.0-0-0?? (better is 23.Rc4 Rad8 24.0-0-0+/-) 23…Ba2 0–1. Romsdal,Svein Erik – Rasmussen,Egil, Alta ASKO Hostturnering, 2004.

5.Nf3 0-0 6.Be2 a6 7.0-0 Nc6 8.d4 ed4 9.Nd4 Nd4 10.Qd4 Bf5 11.e4 Bg6 12.f4 c5 13.bc5 dc5 14.Qd8 Rfd8 15.e5 Ne4? (better is 15...Bc2 16.ef6 Bf6) 16.f5 Nd2 17.fg6 Nf1 18.gf7 Kf8 19.Rf1 Rd2 20.Bd3 c4 21.Bh7 Rad8 22.e6 b5 23.Bc1 1–0. Wall,Bill – Bancini, chess.com, 2012.

4.Bc4 Nc6

5.a3= Bd7 6.Nc3=.

5.a3= Bf5 6.h3 (6.Nf3 Be7=) 6...Be7 7.Nf3 0-0 (7...e4 8.Nd4 Nd4 9.Bd4+=) 8.0-0 (8.d3 a6+=) 8...a6 (8...e4 9.Nd4 Nd4 10.Bd4+=) 9.Re1 (9.d3 d5 10.e4 dc4 11.ef5 cd3 12.Ne5 dc2 13.Qc2 Ne5 14.Be5 Bd6=) 9...b5 (9...e4 10.Nd4 Nd4 11.Bd4+=) 10.Bb3 (10.Be2 e4 11.Nd4 Nd4 12.ed4 d5+=) 10...Qd7 (10...e4 11.Nd4 Nd4 12.ed4+=) 11.Nc3 Bg6 (11...e4 12.Nd4 Nd4 13.ed4+=) 12.d3 (12.d4 e4 13.d5 Ne5+=) 12...Rfe8 (12...a5 13.Nh4=) 13.Nd5 (13.Nh4 Bh5 14.g4 g5 15.gh5 gh4+/-) 13...Bh5 (13...a5 14.Qd2=) 14.a4+= Rab8 15.ab5 ab5 (15...Rb5 16.c4 Rb4 17.Nb4 Nb4 18.e4+=) 16.c3 (16.Ne5 de5 17.Nf6 Bf6 18.Qh5 Nb4+=) 16...e4 (16...Nd5 17.Bd5 Bf6 18.e4+=) 17.Nf6 (17.de4 Ne4 18.Nf4 Bh4=) 17...Bf6= 18.de4 Ne5 (better is 18...Nb4 19.g4 Bg6=) 19.Ne5+/- Be5?? (19...Re5 20.g4 Bg6 21.f4 Re4 22.Qf3+–) 20.Qd2 (better is 20.Qh5 Ra8 21.f4 Ra1 22.Ra1+–) 20...c6 (20...Bf6 21.f3+/-) 21.f4+– Bf6 22.g4 Bg4 23.hg4 (23.hg4 Qg4 24.Qg2 Qg2 25.Kg2 Re4 26.Ra6+–) 1–0. Verns – azad_m, internet, 2007.

5.a3 Bg4 6.Ne2 d5+=.

5.f4 Nb4 (5...ef4 6.ef4 Nb4 7.Qe2 Qe7 8.Bf6 gf6 9.Kd1–/+) 6.fe5+= de5 7.Be5 Nc6 (7...Bf5 8.Na3 Nc6 9.Bb2+=) 8.Bb2 (8.Nf3 Bg4 9.Bb2 Bd6=) 8...a6 (8...Na5 9.Be2+=) 9.Nf3= b5 10.Bb3 Bb4 (10...Be7 11.0-0=) 11.a3 (11.Ng5 0-0 12.Qf3 Bb7+=) 11...Bc5 (11...Be7 12.0-0=) 12.0-0 (12.Ng5 0-0 13.Qf3 Bd7+/-) 12...0-0= 13.d4 (13.Ng5 Be7=) 13...Bd6 14.Qd3 Bg4 (14...Na5 15.Nbd2=) 15.e4 Nd7? (15...Bf4 16.Nc3=) 16.Nbd2 (better is 16.e5 Be7 17.Qe4 Bf3 18.Qf3+– (18.gf3?! Na5=; 18.Rf3?! Na5+=)) 16...Ne7? (better is 16...Na5+=) 17.e5+– Ne5 (17...Nc5 18.dc5 Bc5 19.Kh1 Qd3 20.cd3+–) 18.Ne5 (18.de5 Bc5 19.Kh1 Qd3 20.cd3 Be3+–) 18...Be6 (18...Be5 19.de5 Qd3 20.cd3+–) 19.Nf7! Bf7 (19...Bf7 20.Rf7 Pinning (20.Rf7 Decoy); 19...Rf7 20.Be6 Remove defender) 20.Rf7 Rf7 21.Rf1 (21.Bf7?! Kf7 22.Qh7 Qh8 23.Rf1 Ke6 24.Qe4 Kd7 25.Qg4 Ke8+/-) 1–0. ooioo (2345) – enigma (2000), net–chess.com, 2005.

4.Bc4 d5

5.Bb3 Nc6 6.b5 Na5 7.Be5 Bd6 8.Bf6 Qf6= 9.Nc3 Nb3 10.ab3 0-0 11.Nd5 Qg5 12.c4 Qg2–/+ 13.Qf3 Qg6 14.h3 Bf5 15.Nc3 Bb4 16.Nge2+/- c6? 17.bc6 bc6? 18.Rg1+– Qf6 19.Nd4 Bc3 20.dc3 Rfd8 21.Qf5 Qd6 22.Qg5 g6 23.h4 f6 24.Qh6 Rd7 25.h5 g5 26.Ra6 Qh2 27.Rf1 Rc8 28.Qf6 Qh5 29.Qe6 Qf7 30.Qf7 Rf7 31.Rc6 Rb8 32.Rg1 1–0. jammboy – yulio, ChessWorld.net, 2006.

5.Bb3 Bd6 6.a3 0-0 7.Nc3 Be6 8.Nf3 h6 9.0-0 e4 10.Nd4 Re8 11.Ncb5 Be5 12.Ne6 Re6 13.Nd4 Rd6 14.f4 Bd4 15.Bd4 c6 16.h3 Nbd7 17.g4 Nb6 18.Qe2 a5 19.Bc5 a4 20.Bd6+= Qd6 21.Ba2+/- Nbd7 22.Kg2 b5 23.Rfe1 Re8 24.Qf2 Nh7 25.d3 ed3 26.cd3 Nhf6 27.Re2 Re7 28.Rae1+– Qc7 29.e4 Nb6 30.e5 Nfd7 31.e6 fe6 32.Re6 Re6 33.Re6 Nf6? 34.Qd4 Qd7? 35.Re5 Nc8 36.Kg3 Kf7 37.Qc5 Qd6 38.Qe3 Qd7 39.f5 Ng8 40.Kf3 Nf6 41.g5 hg5 42.Qg5 Nd6 43.Qg6 Kg8 44.h4 Qf7? 45.Qf7+– Kf7 46.Re6?? Nfe8?? 47.Kf4+– Kf8 48.Ke5 Nf7 49.Kf4?? Nd8?? 50.Rg6 Kg8 51.h5 Kh8 52.d4 Kh7 53.Bb1 Nf6 54.h6 Ne8 55.hg7 Ng7 56.Kg4 Ne8 57.Kf4 Kh8?? 58.f6 Ne6 59.Ke5 Nf8 60.Rh6 Kg8 61.f7 Kf7 62.Rc6 Ke7 63.Kd5 Kd7 64.Bf5 Ke7 65.Ke5 Nd7 66.Bd7 Kd7 67.Rh6 Kc7 68.Kd5 Kb7 69.Kc5 Nc7 70.d5 Kc8 71.Rc6 Kd7 72.Rc7! Kc7 73.Kb5 (73.Kb5 Kd6 74.Ka4+–) 1–0. SirGraves – akadawn, ChessWorld.net, 2005.

5.Bb3 Bd6 6.a3 c6 7.c4 Bg4 (7...dc4 8.Bc4 b5 9.Bb3=+) 8.Qc2 0-0 9.f3 Bh5 10.Ne2 Nbd7 (10...Bg6 11.Qc1-/+) 11.0-0 (11.c5 Bg6 12.Qc3 Bc7=+) 11...Bg6 12.d3 Qb6 13.c5 (13.Bc1 dc4 14.Bc4 a5 15.ba5 Qa5-/+) 13...Bc5-/+ 14.bc5 Nc5 15.Bd5?? (better 15.Nc1 Nd3 16.Nd3 Qe3 17.Qf2 Qd3 18.Nd2-/+) 15…Nd5-+ (15...Nd5 16.Be5 Ne3-+ (16...Nd3?! 17.Bd4 Ne3 18.Qa2-+); 15...cd5?! 16.Be5 Nb3 17.Bf6-+) 0-1. kaalmakreel (2130) - Nimzowitsch1988 (2060), ChessWorld.net, 2015.

5.Bb3 Bd6 6.Ne2 0-0 7.0-0 Re8 8.b5 Bd7 9.a4 c6 10.Nbc3 a6 11.d3 Be6 12.f4 Nbd7?? (better 12...Qb6 13.Qd2 ef4 14.Nf4 ab5 15.ab5 Ra1 16.Ba1 Ng4-/+) 13.f5+- d4? (better 13...Qb6 14.Qd2 Ng4 15.fe6 Re6+-) 14.fe6 fe6 15.ed4 ed4 16.Ne4 (better 16.bc6!? dc3 17.cd7 Qd7 18.Nc3 Qc7+-) 16...Ne4 17.de4 c5 18.Nf4 Nf8 (18...Bf4 19.Rf4 Qc7 20.g3+-) 19.Qg4 Qd7 (19...Qe7 20.b6+-) 20.Nh5 (better 20.Nd5!? Be5 21.Nb6 Qd6 22.Na8 Bh2 23.Kh1 Ra8+-) 20...Kh8 21.Rf3 (21.b6 Ng6+-) 21...Rac8? (21...Ng6 22.Rh3 Ne5+-) 22.Bc4 (22.Raf1 Ng6 23.Rf7 Re7 24.Rg7 Bh2 25.Kh2 Rg7 26.Ng7 Qg7 27.Be6 Rf8 28.Rf8 Qf8+-) 22...Re7?! (22...Ng6 23.ba6 Ne5 24.Bb5+/-) 23.Raf1 (23.ba6!? Rb8 24.Raf1 Ng6+-) 23...Ng6 24.Bc1 (24.ba6 Rg8 25.a7 Ra8+-) 24...Rg8 (24...Qe8 25.Bg5 (25.ba6?! Ne5 26.Rf8 Qf8 27.Rf8 Rf8+-) 25...Ne5 26.Be7 Qe7 27.Qe6 Qe6 28.Be6 Nf3 29.Rf3+-) 25.Bg5 (25.Qg6 ab5 26.Rh3 Bh2 27.Rh2 h6 28.Nf6 gf6 29.Qf6 Rgg7 30.Rh6 Kg8 31.Qf8) 25...Ne5 26.Be6?? (better 26.Qh3 Nc4 27.Be7 Qe7 28.Rf7+-) 26...Re6-+ (26...Ng4?! 27.Bd7 Bh2 28.Kh1 Rd7 29.g3=+; 26...Qe6?! 27.Qe6 Nf3 28.Rf3 Re6 29.Bf4-+; 26...Nf3?! 27.Rf3 Qe6 28.Qe6 Re6 29.Bf4-+) 27.Qf5 Nf3 28.Rf3 Qe8 (28...ab5?! 29.Nf6 gf6 30.Bf6 Rf6 31.Qd7 Rf3 32.Qd6=) 29.Nf6 (29.Rh3 Rg6 (29...ab5?? 30.Nf6 Bh2 31.Rh2 Qh5 32.Qh7 Qh7 33.Rh7) 30.Nf4 Bf4 31.Bf4 Rf8-+ (31...ab5?! 32.Bd6-+)) 29...gf6 (worse 29...Rf6 30.Bf6 Qf7 31.Be5 Qf5 32.Rf5 (32.ef5?? Be5 33.g4 Rd8-+) 32...Be5 33.Re5 ab5 34.ab5+=) 30.Bf6 Rg7! 31.Rh3 (31.Bg7 Kg7 Combination) 31...Rf6! 32.Qf6 Be5 (32...Qe4?! 33.Qd8 Rg8 34.Qf6 Rg7 35.Qd8 Rg8 36.Qf6 Rg7=) 33.Qf5 Qg6 (33...Rf7 34.Qg5 Bf4 35.Qc5 Qe4 36.Qc8 Kg7 37.Qg4 Kf8 38.Qd1 Be3 39.Re3 Qe3 40.Kh1-+) 34.Qf8 (34.Qg6 Rg6 35.Rh5 Re6-+) 34...Rg8 35.Qf3 Bd6 (35...Qg5 36.Rh5 Qc1 37.Qf1 Qe3 38.Kh1 Qe4 39.b6-+) 36.Rg3 (36.Rh5-+) 36…Bg3 (36...Bg3 37.hg3 Re8-+) 0-1. PeteGwent (2115) - paoloone (2025), ChessWorld.net, 2020.

4.Bc4 Be6

5.Be6= fe6 6.Ne2 Be7 7.0-0 a6 (7...Qd7 8.a3=) 8.f4 ef4 (8...e4 9.a3=) 9.Nf4+= (9.Rf4?! 0-0+=) 9...e5 (9...Qd7!?+=) 10.Ne6+/- Qd7 11.Ng7 Kd8 12.Nh5 (better is 12.d4 Nc6 13.a3+/-) 12...Rg8?? (better is 12...Nh5 13.Qh5 Qa4+=) 13.Nf6 (13.Rf6!? Qa4 14.Rf7 Qb4+–) 13...Bf6 14.Rf6 Ke7 (14...Rg2 15.Kg2 Qg7 16.Kh1 Qf6+–) 15.Qf3 Qb5 (15...Qc6 16.Rf7 Kd8 17.Qc6 Nc6+–) 16.Rf7 Ke8 (16...Kd8 17.Qf6 Kc8 18.Qe6 Nd7 19.Nc3+–) 17.Qf6 Nc6 (17...Rg2 18.Kg2 Qd5 19.Qf3 Qf7 20.Qb7 Qg6 21.Kf2 Qh6 22.Qa8 Qh2 23.Qg2 Qh4 24.Ke2 Qc4 25.Kd1 Nd7+–) 18.Qe6 1–0. Vahl,Laurens – Niesert,Tom, Hengelo U14 op, 1998.

5.Be6 fe6 6.Nf3 a6 7.Ng5 Qe7 8.0-0 h6 9.Nf3 Nc6 10.a3 0-0-0 (10...e4 11.Nd4 Nd4 12.ed4=) 11.c4 g5 (11...e4 12.Ne1=) 12.d4 White prepares the advance c5 (12.b5 ab5 13.cb5 Nb8+=) 12...ed4 13.Nd4 Nd4 14.Bd4 (14.Qd4 Bg7+=) 14...d5 15.c5 (15.cd5 e5 16.Bb2 Nd5+=) 15...e5 16.Bb2 h5 (16...c6 17.Nd2=) 17.Qa4 (17.c6 bc6 18.Nd2 Nd7+=) 17...Kb8 (17...c6=) 18.b5 (18.c6!?+=) 18...ab5=+ 19.Qb5 Threatening mate... how? 19...c6 (19...Qc5 20.Qc5 Bc5 21.Be5=+) 20.Qb6 (20.Qa5!? Re8 21.Nd2=) 20...Nd7=+ The pressure on the isolated pawn grows 21.Qa5 Rg8 (21...Qf6 22.Nc3 Bc5 23.Rac1=+) 22.Nc3 (22.Nd2!?=) 22...Nc5=+ 23.Na4 Na4 24.Qa4 e4 (24...Bg7 25.Bc3=+) 25.Bd4 (25.Rfc1 Kc7=) 25...c5=+ 26.Bc3 Qd6 (26...h4 27.Rab1=+) 27.Rab1= Rd7?? (better 27...Bg7=) 28.Be5!!+– Qe5 A deflection 29.Qd7 A pinning theme 29...Qc7 30.Qd5 Rg7 31.Qe4 (31.Rfd1 h4+–) 31...Bd6 32.Qe8 Qc8 (32...Ka7 33.h3+– (33.Qh5?! Rh7 34.Qg6 Bh2 35.Kh1 Be5 36.Kg1 Bh2 37.Kh1 Be5 38.Kg1 Bh2=)) 33.Qh5 g4 (33...c4 34.Qh6 Qc7 35.Rfd1+–) 34.Rb6 (34.Rfd1 Bf8+–) 34...Bc7 35.Rb5 Qg8 (35...Bd6 36.Rfb1 c4 37.Rd5+–) 36.Rfb1 (36.Rc5?! Rh7+=) 36...b6 (36...Bd6 37.Qh6 Be5 38.Qc6+–) 37.a4 (37.Qc5 Rg6+–) 37...Rh7 (37...Rg5 38.Qh6 Rg6 39.Rb6 Rb6 40.Rb6 Bb6 41.Qb6 Ka8 42.Qc5+–) 38.Qf5 (better 38.Qc5! Rh6 39.g3+–) 38...Bh2 39.Kf1 Bc7 40.Rb6 Bb6 41.Rb6 Kc7 (41...Ka8 42.Re6 Rd7 43.Ra6 Kb7 44.Qd7 Ka6 45.Qc6 Ka7 46.Qc5 Kb8 47.Qb6 Ka8 48.Qc6 Ka7+–) 42.Qc5 Kd7 43.Rb7 (43.Qd6 Ke8 44.Rb8 Kf7 45.Rb7 Ke8 46.Qb8) 43...Ke6 44.Rh7 (44.Qc6 Ke5 45.Rb5 Qd5 46.Rd5 Ke4 47.Qe6) 44...Qh7+– 45.Qc6 Ke5 46.Qc3 Kd5 47.Qd4 Kc6 48.a5 (48.Qg4!? Qd3 49.Ke1 Qc3 50.Ke2 Qc2 51.Kf3 Qd1 52.Kg3 Qe1+–) 48...Kb5 (48...Qh1 49.Ke2 Qg2 50.Qb6 Kd7+–) 49.Qe5 (49.Qb6 Ka4 50.a6 Qh1 51.Ke2 Qh7 52.Qd4 Kb5 53.Qd3 Qd3 54.Kd3 Ka6+–) 49...Ka6 50.g3 (better 50.Qd5!? Qb1 51.Ke2 Qc2 52.Qd2 Qc5+–) 50…Qb7 (50...Qb7 51.Qd6 Ka5 52.Qa3 Kb5 53.Qb3 Kc6 54.Qb7 Kb7+–; 50...Qh1 51.Ke2+–) 0–1. aravind555 – Sergey_solo123, lichess.org, 2018.

5.Be6 fe6 6.Nf3 Be7 7.0-0 0-0 8.Nc3 Nbd7 (8...Qd7 9.a3=) 9.d4 (9.Ng5 Qc8 10.Ne6 Re8+/-) 9...e4? (9...Qe8=) 10.Nd2?? (10.Ng5 Qc8 11.Ne6+/- (worse is 11.Nge4 d5 12.Nf6 Nf6+=)) 10...d5+= 11.Na4 (better is 11.a3!?+=) 11...Bb4–/+ 12.Bc3 (12.c4 dc4 13.Nc3 Bc3 14.Bc3 b5–/+) 12...Bc3 (12...Be7 13.Rb1-+) 13.Nc3 b6 (13...e5 14.de5 Ne5 15.Rb1-+) 14.Nb3 (14.f3 ef3 15.Nf3 c5–/+) 14...c5-+ 15.dc5 bc5 16.Na4 (16.Rb1 Rb8-+) 16...Qc7 (16...c4 17.Nd4 Qa5 18.c3-+) 17.Nd2 (17.c4 Qc6 18.Nb2 Rab8-+) 17...Qa5 (17...Rab8 18.Nc3-+) 18.Nb2 (18.c4 Rab8-+) 18...Rab8 19.Rb1 (19.Qc1 c4 20.c3 Nc5-+) 19...Qa2 20.Qc1 Qa5 21.Nb3 (21.c4 Qc7-+) 21...Qc7 22.c4 (22.Qd1-+) 22...Rb3 23.cd5 (23.Qc2 Ng4 24.g3 Rfb8-+) 23...ed5 24.Qd1 (24.Qc2 Ng4 25.g3 c4-+) 24...Rbb8 (better is 24...Rfb8 25.f4-+) 25.Qc2 (25.Qd2 Qe5 26.h3 Rb4-+) 25...a5 (25...Ng4 26.g3-+) 26.g3 (26.h3 Rb4-+) 26...c4 27.Na4 (27.h3 Qe5-+) 27...Nc5 (27...Ne5!? 28.Nc3-+) 28.Nc5 Qc5 29.Rb8 (29.Qc3 Rb4-+) 29...Rb8 30.Rb1 (30.Qc3-+) 30...Rb1 31.Qb1 c3 32.Qb8 Kf7 33.Qb7 Kg6 34.f4 Qe3 (better is 34...c2 35.f5 Kh6 36.Qg7 Kg7 37.Kg2 c1Q 38.Kh3 Q5c2 39.g4 Qe3 40.Kh4 Qh2) 35.Kf1 c2 36.Kg2 (36.f5 Kh6 37.Qc6 c1Q 38.Qc1 Qc1 39.Kg2 Qb2 40.Kg1 Ng4 41.h4 Qf2 42.Kh1 Qf1) 36...c1Q (36...Qe2 37.Kh3 c1Q 38.f5 Kf5 39.Qd5 Nd5 40.Kh4 Qh2) 37.Kh3 (37.f5 Kf5 38.g4 Kg6 39.Qg7 Kg7 40.h4 Qcg1) 37...Qf1 (37...Qg3 38.Kg3 Qg1 39.Kh4 Qh2) 38.Kh4 Qee2 (38...Qef4 39.gf4 Qf4 40.Kh3 Qg4) 39.h3 (39.f5 Qf5 40.Qg7 Kg7 41.h3 Qfh5) 39...Qh2 (39...Qh5) 40.f5 (40.Qg7 Kg7 41.Kg5 Qhh3 42.g4 Qg4) 40...Qf5 41.g4 (41.Qg7 Kg7 42.g4 Qg4) 41...Qg4 0–1. Hansen,Torben – Kaczenski,Jan Torben, Schleswig Holstein–ch U12, 2000.

5.Be6= fe6 6.Nf3 Be7 7.c4 0-0 8.0-0 Nc6 9.b5 Nb4=.

5.Be6= fe6 6.Nf3 Be7 7.c4 0-0 8.Qb3 h6 (8...e4 9.Nd4 Qd7 10.d3+=) 9.Nc3 (9.0-0 e4 10.Nd4 Qd7=) 9...Qe8 (9...e4 10.Nd4 Qd7 11.f3=) 10.d3 a6 11.c5 Bd8 (11...Qf7 12.cd6 cd6 13.Rc1=) 12.e4 (12.0-0 Nc6+=) 12...Kh7 (12...Nbd7 13.cd6 cd6 14.Rc1=) 13.Ne2 (13.0-0 Nc6+=) 13...Nc6 14.0-0 Nh5 (14...Qf7 15.cd6 cd6 16.Rac1=) 15.d4 ed4 16.cd6 (16.Nfd4 Nd4 17.Bd4 Bf6+=) 16...cd6 (16...e5 17.dc7 Bc7 18.Rad1=) 17.Nfd4+= Nd4 18.Nd4 (18.Bd4 Bf6+=) 18...Nf4= 19.g3 (19.Rac1!?=) 19...Qg6+= 20.Rae1 Bb6 21.Kh1 Nh3 (21...Bd4 22.Bd4 e5 23.Be3=) 22.Qe6 (22.Ne6 Rfe8 (worse is 22...Nf2 23.Kg2+/-) 23.Ng7 Nf2 24.Rf2 Bf2 25.Ne8 Be1 26.Nf6 Kh8+–) 22...Qe6 (22...Nf2 23.Kg2 Nd3 24.Qg6 Kg6 25.Bc3-+) 23.Ne6 Rf2 24.Bg7 Re8 25.Bd4 Bd4 (25...Rf1 26.Rf1 Re6 27.Bb6=) 26.Nd4 Rf1 27.Rf1 Re4 28.Nf5 Rb4 (28...d5 29.Kg2 Ng5 30.a3=) 29.Nd6 (29.Kg2 Ng5 30.Nd6 b5+=) 29...Rb2= 30.Rf7 Attacks the backward pawn on b7 30...Kg6 31.Rb7 (31.a3 b5=) 31...Ra2+= 32.Rb6 Ng5 33.Nc4 (33.Ne8 Kf7 34.Nc7 Ra1 35.Kg2 Ra2 36.Kh1 a5+=) 33...Kh5 34.Ne5 Threatening mate... how? 34...Re2?? (better is 34...Ne4+=). Szamoskozi,Z – Halis,A, Spring op Hungary, 1995.

5.Be6 fe6 6.Nf3 Be7 7.d4 e4 8.Ng5 d5 =.

4.Bc4 Bg4

5.Ne2 Nbd7 6.a3 d5 7.Ba2 Bd6 8.h3 Be2 9.Qe2 Qe7 10.c4 dc4 11.Bc4 a5 12.b5 0-0 (12...Nb6 13.0-0=) 13.Nc3 (13.d3 Rfd8=) 13...e4 (13...Nb6 14.d3+=) 14.d4 (14.d3 ed3 15.Bd3 Rfd8=) 14...ed3 (14...Nb6 15.0-0+=) 15.Bd3= Rfe8 16.a4 Rad8 17.Rd1 Ne5 (17...c6 18.Bf5=) 18.Bb1 Ba3 19.Ba1 Rd1 20.Qd1 Rd8 21.Qe2 Qe6 22.0-0 Qc4 (22...c6 23.Qc2=) 23.Qc2 Bb4 (23...c6 24.Ne4 Qc2 25.Bc2 Ne4 26.Be4+=) 24.Rd1 (24.Ne4 Ne4 25.Qc4 Nc4 26.Be4 Nb6+/-) 24...Rd6 25.Rd6 Bd6 26.Ne4 Ne4 27.Qc4 (27.Qe4?? Qc1 28.Kh2 Nf3) 27...Nc4 28.Be4 Nb6 (28...b6 29.g3+/-) 29.Bc2 (29.Bc3 Na4 30.Ba5 Nc5+/-) 29...Nd7 30.Bd4 (30.Bc3 Bb4 31.Bd4 c5 32.bc6 bc6+=) 30...g6 (30...Be5 31.Bf5 Bd4 32.Bd7+=) 31.Be4+/- b6 32.Kf1 (32.g4 Nc5 33.Bc5 Bc5+/-) 32...Kf8 33.Ke2 (33.g4 Nc5 34.Bc2 Ke8+/-) 33...Ke7 (33...Be5 34.Kd3+/-) 34.Bc6 (34.g4 Nc5 35.Bc5 Bc5+/-) 34...Nf8 (34...Be5 35.Bd7 Bd4 36.Bc6+/-) 35.Kd3 Ke6 (35...Ne6 36.g4+/-) 36.Bg7 (36.e4 Nd7+/-) 36...h5 (36...Nd7 37.Bd7 Kd7 38.e4+=) 37.e4 Nh7 (better is 37...Nd7!?+/-) 38.Bd5+– Ke7 39.Bd4 (39.e5!? Bc5 40.f4 h4+–) 39...Nf8 (39...Nf6 40.Bc6 Nd7 41.Ke3+/-) 40.f3 (40.e5 Bc5+/-) 40...Nd7 41.Bc6 (41.Kc4 f6+/-) 41...Nf8 (41...Ne5 42.Be5 Be5+/-) 42.Bd5 (42.e5 Bb4+/-) 42...f6 (42...Nd7 43.g4 Nc5 44.Bc5 Bc5+/-) 43.Bb3 (43.g4 h4+/-) 43...h4 44.Bc2 (44.Bd5 Ne6 45.Be3 Nf4 46.Bf4 Bf4=) 44...g5 (44...Ne6 45.Be3+=) 45.Kc4 (45.Bb3 Ng6 46.Ke2 Nf4 47.Kf1 Ne6 48.Be6 Ke6+=) 45...Ne6= 46.Bd3 Be5 47.Be3 Kd6 48.Bc2 (48.Bg1 c5=) 48...Nf8 (48...Nf4 49.Bf4 Bf4 50.Kc3=) 49.Bc1 (49.Bd1 Ne6=) 49...Ng6 (49...Ne6 50.Bb3=) 50.Kd3 (50.Bd3 Nf4=) 50...Ba1 (50...c6 51.bc6 Kc6 52.Kc4=) 51.Ke3 (51.Ke2 Nf4 52.Kf1 c5=) 51...Nf4 52.Kf2 Bd4 53.Kf1 Nh5 (53...c6 54.bc6 Kc6 55.Bd2=) 54.Bb3 Ng3 55.Ke1 Bc3 (55...Nh5 56.Ba3 Ke5 57.Bc4+=) 56.Kf2 (56.Kd1 Nh5+=) 56...Ke5 (56...Bd4 57.Ke1=) 57.Ke3 Bd4 (57...Nh5 58.Bc4=) 58.Kd3= Ba1 (58...Nh5!?=) 59.Bf7+/- Bd4 60.Bg6 Nh1 61.Bd2 Bb2 62.Be3 Ba3 63.Bg1 Bd6 64.Bf5 Kf4 65.Bh2 Ng3 66.Bd7 Bc5 67.Bc8 Bf2 68.Bd7 (68.Be6 Ke5 69.Bc4 Kd6+=) 68...Ke5 (68...Bc5 69.Be6+/-) 69.Bg3 (69.Bc6!?+/-) 69...Bg3= 70.Bc6 Bh2 71.Be8 Bg1 72.Bc6 Kf4 73.Ke2 Bc5 74.Bd7 Ba3 75.Bc6 (75.Kd3 Bc5=) 75...Kg3 76.Kf1 Bf8 (76...Bd6 77.Bd5=) 77.Bd5 (77.Bd7 Kf4=) 77...Kf4 78.Ke2 Ke5 79.Kd3 f5 80.Bc6 fe4 81.Be4 Bc5 82.Kc4 Bd6 83.Kd3 (83.Bc6 Kf4+=) ½–½. Hecimovic,Ivan (2230) – Loncar,Robert (2405), Zagreb op, 1998.

5.Ne2 Nbd7 6.h3 Bh5 7.Nbc3 Nb6 8.Bb3 Be7 9.0-0 0-0 10.a4 a5=+ 11.b5 (11.b5 c5 12.bc6 bc6 13.g4=). msmsk – BorEl, playchess.de, 2001.

5.f3 d5 6.Be2 Bf5 7.Be5 Bb4 8.g4 =+.

5.f3 Bh5 6.g4 (6.Nc3 d5 7.Be2 Bb4–/+) 6...Bg6 (6...d5 7.Bd3 e4 8.Be2 ef3 9.Bf3 Ng4 10.h4–/+) 7.h4 (7.g5 Nfd7 8.h4 Nb6+=) 7...h6 (7...d5 8.Bb5 c6 9.h5 Bh5 10.gh5 cb5 11.Be5 Bb4 12.Nc3+=) 8.Nc3 (8.h5 Bh7=) 8...c6 (8...d5 9.Bb5 c6 10.h5–/+) 9.a3 (9.h5!? Bh7 10.e4+=) 9...d5+= 10.Bb3 (10.Bd3 Bd3 11.cd3 Bd6–/+) 10...Bd6 11.Qe2 (11.h5 Bh7+=) 11...0-0= 12.g5 hg5 (12...Nfd7 13.gh6 gh6 14.e4=) 13.hg5 Nh5 14.Qg2 b5 (14...a5 15.b5 d4=) 15.0-0-0 (15.Qg4!? d4 16.Ne4+/- (16.Rh5?! Bh5 17.Qh5 dc3 18.Bc3 a5=; 16.ed4 ed4 17.Ne4 Nf4+/-)) 15...Be7 (15...a5 16.Qg4+=) 16.Nh3 (16.Qg4 a5 17.ba5 Qa5 18.Nb1+= (18.Rh5 Ba3 19.Rh4 Bb2 20.Kb2 Qa3 21.Kb1 Qa1)) 16...Bf5 (16...a5 17.Qg4+=) 17.Rdg1 (17.e4 Be6 18.Nf2=) 17...a5+= 18.e4 ab4 19.ef5 (19.ab4!? Bg6 20.Qh2=) 19...bc3–/+ 20.dc3 (better is 20.Bc3!? Ba3 21.Kd1–/+) 20...Ba3-+ 21.g6 (21.Ba3 Ra3 22.Qg4 Ra1 23.Kd2 Rg1 24.Rg1 g6–/+) 21...Bb2 22.Kb2 Qd7 (22...Qf6 23.gf7 Rf7 24.Ng5-+) 23.Qg5 (23.gf7 Qf7 (23...Kf7 24.Qg6 Kg8 25.Qh5 Qf5 26.Ng5 Qg5 27.Rg5+–; 23...Rf7 24.Ng5 Nf4 25.Qh2+=) 24.Ng5 Qe7-+) 23...Nf6 (23...fg6 24.fg6 Rf5 25.Qh4-+) 24.gf7 (24.Ra1 Na6-+) 24...Rf7 (24...Qf7 25.Qg6-+) 25.Nf2 (25.Qg6 Qa7 26.Ra1 Na6-+) 25...Qe7 (25...Nh7 26.Qg6 Qf5 27.Nd3 Qg6 28.Rg6 Rf3 29.Rhg1-+) 26.Kc1 Ra1 (26...Qc5 27.Ne4 Qa7 28.Nf6 Rf6 29.Qf6 Qg1 30.Rg1 Ra1 31.Kd2 Rg1 32.Qd8 Kh7 33.Qb8 Rg2 34.Ke3+–) 27.Kd2 Rg1 28.Qg1 Qc7 29.Ng4 Ng4 30.fg4 e4 (better is 30...Rf6-+) 31.Rh4 (better is 31.Qe3!?–/+) 31...Qf4-+ 32.Ke2 (32.Qe3 Rf5! 33.gf5 Qh4-+) 32...Rf5 33.gf5 Qh4 34.Qa7 (34.Qg6 Qh2 35.Ke3 Qh6 36.Qh6 gh6-+) 34...Qg4 35.Kd2 Qf4 36.Ke2 Kf8 37.Qf2 Qg4 38.Ke1 Nd7 39.Qf1 (39.c4 bc4 40.Ba4 Qg5-+) 39...Ne5 (39...Ne5 40.c4 dc4-+) 0–1. McCarthy,Mike – Azzola,Orazio, IECC, 2001.

4.d3 c6

5.c4 a5 6.b5= cb5 7.cb5 a4 (7...Be7 8.Be2=) 8.a3 (8.d4 a3 9.Bc3 Nd5=) 8...Qa5 (8...Be6 9.d4 Nbd7 10.Nc3=) 9.Bc3 (9.Nc3 d5 10.d4 e4=) 9...Qc7 (9...Qb5 10.d4 Qd5 11.Nd2+=) 10.d4 Be6 11.de5 (11.Bb2 Bb3 12.Qe2 Qc2=) 11...de5+= 12.Nf3 Nbd7 13.Be2 Bd6 14.h3 (14.Ng5 Bf5 15.Bd3 Bd3 16.Qd3 Nc5+=) 14...Bb3–/+ 15.Qc1 Rc8 16.0-0 0-0 17.Qb2 e5 seems the pivot of the position 17...Rfe8 (17...Rfd8 18.Rc1+=) 18.Rc1 Nc5 (18...Bd5 19.Nbd2+=) 19.Bb4 Qe7 20.Nbd2 Nfd7 (20...e4 21.Nd4 Qe5 22.g3=) 21.Nb3 ab3 (21...Nb3!? 22.Rc8 Rc8 23.Bd6 Qd6=) 22.Nd2+= e4 23.Nb3 g6 (23...Red8 24.Ba5 b6 25.Nc5+=) 24.Nc5 (24.Rc4 Nd3 25.Bd6 Qd6+–) 24...Nc5 25.Rab1 h5 (better is 25...b6+/-) 26.Bc3 (better is 26.Rc4+/-) 26...Na4 27.Bf6? (better is 27.Qb3 Rc3 A) 28.Rc3? Qe5 (28...Nc3?! 29.Qc3 Ra8 30.Bc4+=) 29.g3 Nc3-+ (worse is 29...Qc3 30.Qa4 Qa3 31.Qa3 Ba3 32.Rd1=); B) 28.Qa4 Ra3 29.Qd4+=) 27...Rc1-+ (worse is 27...Nb2 28.Rc8 Qf6 29.Re8 Kg7 30.Re4-+) 28.Rc1 Nb2 29.Be7 Re7 (29...Re7 30.Rc3 Rc7 31.Rc7 Bc7-+) 0–1. Terzic,Suzana – Maric,Mirjana (2280), YUG–ch3 (Women), 1996.

5.c4 Qb6 6.a3 =.

5.Nf3 Qb6 6.a3 c5 (6...a5 7.Nbd2=) 7.Nbd2= cb4 8.Nc4 Qb5 (8...Qc6 9.ab4 Be6 10.Qd2=) 9.d4+= Qc6 10.de5 de5 11.Nce5 Qb6 (11...Qc7 12.Bb5 Nc6 13.Nc6 bc6 14.Bf6 cb5 15.Qd4+=) 12.Bc4 (12.Bd4 Qc7 13.Ng5 Be6+/-) 12...Be6+= 13.Bd4 Qa5 (13...Qc7 14.Be6 fe6 15.Ng5 ba3 16.Ne6+/-) 14.ab4 Bb4 15.Ke2 Qc7 16.Be6 fe6 17.Ng5 (better is 17.c3 Bd6 18.Qb3+/-) 17...Nbd7?? (better is 17...Nc6 18.Ne6 Qe7 19.Nc6 bc6+=) 18.Ne6+– Qc8 19.Ng7 Ke7 (19...Kf8 20.Nd7 Nd7 21.Ne6 Ke7 22.Bh8 Ke6 23.Qd3 Qh8 24.Qc4 Kf6 25.Qb4+–) 20.Nd7 Nd7 (20...Qc4 21.Qd3 Qd3 22.cd3 Nd7 23.Nf5 Ke6 24.Bh8+–) 21.Nf5 Ke6 22.Qd3 (worse is 22.Bh8 Qh8 23.Nd4 Kf7+–) 22...Bc5 (22...Ne5 23.Ng7 Ke7 24.Be5 Qg4 25.Kf1 Rhd8+–) 23.Qc4 Kf5 24.g4! Kg5 (24...Kg4 Decoy to g4 25.f3) 25.h4 Kg426.Qe6 Kh5 27.Qf7 Kh6 28.Bg7 1–0. Rosner,Dirk (2180) – Sikstrom,Mark, IECG, 2000.

5.Nf3 Be6 =+.

4.d3 Be7

5.a3 0-0 6.Nd2 Bf5 7.Ngf3 Bg6 (7...Be6 8.Be2=) 8.Be2= Nbd7 9.h4 (9.Nh4!?=) 9...a5=+ 10.ba5 Ra5 11.Nc4 Rb5 (11...Ra4 12.Ncd2-/+) 12.Bc3 (better 12.a4 Rc5 13.Nfd2=) 12...c5?? (better 12...Rc5 13.Bb4 Rc6=+) 13.a4+/- e4? (better 13...Rb6!? 14.Nb6 Qb6+/-) 14.Bb2?? (better 14.ab5 ef3 15.Bf3+- (worse 15.gf3 d5 16.Ne5 Ne5 17.Be5 Nd7+-)) 14…d5 (14...d5 15.de4 Rb2 16.Nb2 de4+=). opperwezen (2635) - TwelveTeen (2700), lichess.org, 2018.

5.Nd2 b5 6.a4 c6 (6...ba4 7.Ra4 Bd7 8.Ra1=) 7.d4 e4 (7...ba4 8.de5 de5 9.Be5 Bb4 10.c3=) 8.ab5+= Bd7 (8...d5!?+=) 9.bc6+/- Nc6 10.b5 Nb4 11.Bc3 Nbd5 12.Ba5 Qb8 13.c4 Nb6 14.Qc2 0-0 15.Ne4 Bf5?? (better is 15...Rc8 16.Nf6 Bf6+–) 16.Nf6 Bf6 17.Qf5 Qc7 (17...Be7 18.Bd3 g6 19.Qe4+–) 18.Bd3 g6 (18...Rfe8 19.Qh7 Kf8 20.Ne2+–) 19.Qf6 Qd7 20.c5 dc5 21.dc5 Nd5 22.Qd4 Qe6 23.Bc4 Qf6 24.Bd5 Qf5 25.Bc3 1–0. marekt – blanco2003, ChessWorld.net, 2013.

5.Nd2 Be6 6.c4 c6 7.Ngf3 h6 8.Be2 Qc7 9.0-0 Nbd7 10.a4 g5 11.e4 g4 12.Nh4 h5 13.g3 (13.d4 Ne4 14.Ne4 Bh4 15.de5 de5 (15...Ne5?? 16.Nd6 Kf8 17.Be5+–) 16.Nd6 Ke7=) 13...Nh7 (13...d5 14.b5+=) 14.Nf5 Bf6 15.Ne3 Ng5 16.Ng2 (16.f4 Qb6 17.c5 Nh3 18.Kg2 Qb4+= (worse is 18...dc5 19.f5+/-)) 16...0-0-0 (16...Qb6 17.d4+=) 17.Kh1 Rdg8 18.f4 ef4 (18...gf3 19.Nf3 Nf3 20.Bf3+=) 19.Bf6= Nf6 20.Rf4 Nd7 21.d4 Nh3 22.Rf1 (better is 22.d5 Nf4 23.Nf4+=) 22...Rg6?? (22...Qb6 23.d5 Qg1 24.Rg1 Nf2) 23.d5+– Bd5 (better is 23...Ne5 24.de6 Re6+–) 24.cd5 Ne5 25.Rc1 (25.Nh4 Rg7+–) 25...Kb8 (25...Qb6 26.Nh4 Rgg8 27.Bb5+–) 26.a5 a6 (26...Qd7 27.dc6 bc6 28.Nh4+–) 27.Qa4 (27.dc6 Nc6 28.b5 ab5 29.Bb5 Rg5+–) 27...Ka7 28.Nh4 Rgh6 29.Qa3 Ng5 30.Qe3 b6 31.Qg5 b5 32.Qe3 Kb7 33.Nb3 R6h7 34.Kg2 Kb8 35.Nf5 h4 36.gh4 Qa7 37.Qg3 Qc7 38.Bd1 Nc4 39.Bg4 cd5 40.ed5 Rg8 41.h3 Qd8 42.Nbd4 (42.Nbd4 Qc7 43.Nc6 Ka8 44.Qc3+–) 1–0. Dieckmann,Paul – George,Heinz, Schleswig Holstein–chB, 1988.

5.Be2 0-0 6.Nf3 Bg4 7.0-0 a6 8.h3 Bh5 9.Nh4 Be2 10.Qe2 Nc6 0–1. Zaichenko,Andrey – Marques,Joao, FICGS, 2008.

5.Nf3 (--> 4.Nf3 Be7 5.d3).

4.d3 g6

5.Nd2 Bg7 6.Ngf3 b6 7.Be2 Bb7 8.0-0 0-0 9.c4 Nbd7 10.Qb3 a5 11.a3 ab4 12.ab4 Qe7 Black prepares the advance e4 13.Qc3 h6 14.h3 Nh7 15.Qc2 f5 16.Rfe1 e4 17.de4 fe4 18.Ra8 Ba8 19.Nd4 Qh4 20.Rf1 Ng5 21.Nb5 Ne5 (better is 21...Bb2!? 22.Qb2 Ne5=) 22.Nc7+/- Nd3 (22...Bc6+/-) 23.Na8 (23.Bg7 Rf2 24.Bg4-+) 23...Nb2?? (better is 23...Rf2 24.Ne4 Ne4 25.Qd3 Rf1 26.Bf1 Qf2 27.Kh1 Ng3 28.Kh2 Kh7 (worse is 28...Nf1 29.Kh1 Kh7 30.Qd6 Ne3 31.Qh2 Qb2 32.Nb6-+) 29.Bg7 Nf1 30.Qf1 Qf1-+) 24.Nb6+– Nd3? (24...Kh7+–) 25.Bd3 ed3 26.Qd3 Be5 27.Nd7 Nh3 (27...Rf5 28.Ne5 de5 29.b5+–) 28.gh3 Qg5 29.Kh1 Qh5 30.e4 Rf4 31.Ne5 Qe5 (31...de5 32.c5 Kg7 33.b5+–) 32.b5 Kg7 33.Kg2 Qg5 (33...Rf7 34.Nf3 Qf4 35.Rd1+–) 34.Qg3 Qf6 35.b6 g5 36.b7 Qd8 37.Rb1 Qb8 38.h4! Kg6 (38...Rh4 39.c5 Decoy) 39.hg5 hg5 40.Rb5 Rf6 41.Rg5 Kf7 42.Rg7 Ke6 (42...Kf8 43.Qg5 Ke8 44.Qh5 Rg6 45.Kh1 Qb7 46.Qh8) 43.Qh3 Ke5 44.Re7 Kd4 (44...Re6 45.Re6 Kd4 46.Qe3) 45.Qe3 1–0. usingprogram (2015) – openmind71, kurnik, 2013.

5.Nf3 Bg7 6.c4 0-0 7.Be2 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3).

5.Nf3 Bg7 6.Be2 0-0 7.0-0 a6 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0-0 5.Be2 d6 6.0-0 e5 7.d3 a6).

5.Nf3 Bg7 6.Be2 0-0 7.Nbd2 Nc6 8.b5 Ne7 9.0-0 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0-0 5.Be2 d6 6.0-0 e5 7.d3 Nc6 8.b5 Ne7 9.Nbd2).

5.Nf3 Bg7 6.Be2 Be6 7.0-0 0-0 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.e3 0-0 5.Be2 d6 6.0-0 e5 7.d3 Be6).

4.Bd3 a6

5.a3 Be6 +=.

5.c4 Be6 6.a4 (6.Be2!?+=) 6...d5 7.c5 (7.Na3!?–/+) 7...Nc6-+ 8.b5 Nb4 9.Qb3? (better is 9.Bf1 d4 10.Nf3 Bc5 11.Ne5 ab5 12.Na3 ba4 13.Nb5 de3 14.fe3-+) 9...Nd7 10.Qb4 Nc5 11.Qc3 d4! 12.ed4 ed4 13.Qd4 Nd3 14.Kf1 Qd5 15.Qd5 (15.ba6 Ra6 16.Qd5 Bd5-+) 15...Bd5 16.Nc3 (16.Ba3 ab5 17.Nc3-+) 16...Bc4 (16...Nb2?! 17.Nd5 Kd7 18.b6–/+) 17.Ba3 Ba3 18.Ra3 ab5 19.Ra1 ba4 (19...b4 20.Nce2-+) 20.Nge2 (20.Ke2 a3 21.Kf3 b5-+) 20...a3 21.Nd4 (21.h4 Nb4-+) 21...Nb4 22.Kg1 Kd7 (22...a2 23.f4-+) 23.h4 c5 24.Nf3 Nd3 (24...f6 25.d4 a2 26.dc5-+) 25.h5 b5 26.Rh4 Rhb8 27.h6 (27.g3 Be6 28.Kf1 a2-+) 27...gh6 28.Rc4 (28.Rh6 b4 29.Ne4-+) 28...bc4 29.Kf1 (29.g3 Rb2-+) 29...Rb2 30.g3 (30.Nd1 Rc2 31.Ne3 Rc1 32.Rc1 Nc1-+) 30...a2 31.Ke2 (31.g4 Ke6-+) 31...Ra3 32.Ke3 f5 33.Ra2 Rba2 34.Na2 Ra2 0–1. Waibel,Ulrich (1830) – Mall,Stefan (1980), remoteschach.de, 2004.

5.Ne2 Nc6 6.a3+= Be7 7.0-0 0-0 8.Ng3 Re8 (8...Bg4 9.Be2 Be6 10.f4=) 9.f4 ef4 (9...Bg4 10.Be2 Be6 11.Nc3=) 10.Rf4 Ne5 11.Qf1 (11.Bf5 Nd5 12.Rf1 Bf6=) 11...Nd3 (11...Nd5 12.Re4+=) 12.Qd3 Bd7 (12...Nd7 13.Qf1=) 13.Nc3 (13.Nf5 Nh5 14.Rf2 Bf6=) 13...Ng4 14.Rff1 (14.Qf1 Bg5 15.Re4 Ne5+=) 14...Ne5 15.Qe2 (15.Qe4 b5=) 15...Bg4 (15...Be6 16.d3=) 16.Qf2= Be6 17.d4 (17.d3 Bg5 18.Rae1 b5=) 17...Ng4+= 18.Qf3 White prepares d5 18...Rf8 (18...Bg5 19.Nd1 d5 20.c4 dc4 21.e4–/+) 19.e4 (19.h3 Nf6+=) 19...Bh4 (19...Bg5 20.Rae1=) 20.d5 (20.Nf5 Bf5 21.ef5 h5+/-) 20...Bg3 (20...Ne5!? 21.Qf4 Bg5=) 21.Qg3+= (worse is 21.hg3 Ne5 22.Qf4 Bd7+=) 21...Bd7 22.Ne2 Qe7 23.h3 (23.Rf4 Ne5=) 23...Ne5 (23...Qe4 24.Rae1 Qc2 25.Bc3–/+) 24.h4 (24.Be5 Qe5 25.Qe5 de5=) 24...h6 (24...Rae8 25.Rae1=) 25.Bc1 (25.Be5 de5 26.h5 a5=) 25...Kh7 (25...a5 26.Bb2=) 26.Be3 (26.Nd4 Rfe8=) 26...Ng4+= 27.Bd2? (better is 27.Rf4!? Nf6 28.Qf3=) 27...Qe4-+ 28.Qd3 Qd3 29.cd3 Bb5 (29...Rae8 30.Rae1-+) 30.Rf3 (30.Nf4 Rfe8–/+) 30...Ne5-+ 31.Rh3 (31.Re3 Nd3 32.Nc3 Bc4-+) 31...Bd3 (31...Nd3 32.Nf4 Nf4 33.Bf4-+) 32.Nf4 (32.Re1 Bc4 33.Nf4 Rae8-+) 32...Bc4 (32...Bf5 33.Rc3 c6 34.Re1-+) 33.Rc3 (33.Rc1 b5-+) 33...Rac8 34.Rd1 (34.Rac1 b5-+) 34...Kg8 (34...c6 35.Be3-+) 35.Nh3 (35.Rdc1 b5-+) 35...Bd5 (35...c6 36.dc6 Rc6 37.Bf4-+) 36.Rg3 (36.Bh6 Be6 37.Bf4 Rfe8-+) 36...Kh7 37.Bf4 (37.Bh6 Kh6 38.Rd5 Rcd8-+) 37...Bc6 38.Re3 (38.Be5 de5 39.Re3 f6-+) 38...Ng4 (38...Rce8 39.Be5 Re5 40.Re5 de5 41.h5-+) 39.Rg3 (39.Ree1 Rfe8-+) 39...Nf6 40.Nf2 (40.Re3-+) 40...Nh5 41.Re3 (41.Nd3 Ng3 42.Bg3 Rfe8-+) 41...Nf4 42.g3 Nd5 43.Red3 Nb6 44.Ng4 Nc4 (better is 44...f5 45.Ne3-+) 45.Rb3 (45.Rc3 Ba4 46.Rdc1 b5-+) 45...Ba4 46.Rdb1 Nd2 47.R3b2 Nb1 48.Rb1 Rfe8 (48...f5 49.Ne3-+) 49.h5 (49.Kf2 b5-+) 49...Bc2 (49...Bd7 50.Nh2-+) 50.Rc1 (50.Rf1 f5 51.Nh2 c5-+) 50...Bf5 51.Nh2 (51.Nf2 Re3 52.g4 Be6-+) 51...Re3 52.g4 Bd3 (52...Be4 53.Kf2 Ra3 54.Re1-+) 53.Nf1 (53.Rc3 c5-+) 53...Bf1 54.Rf1 f6 (54...Ra3 55.Kg2-+) 55.a4 (55.Kf2 Ra3 56.Rd1 Ra4-+) 55...Rb3 (55...Rg3 56.Kf2 Rg4 57.Rb1-+) 56.b5 (56.Rf4 c5 57.bc5 dc5-+) 56...ab5 (56...Rg3!? 57.Kf2 Rg4 58.Rd1-+) 57.ab5 Rb5 58.Re1 (58.Kf2 f5 59.Kg3 fg4-+) 58...Rb2 (58...f5 59.gf5 Rf5 60.Rb1-+) 59.Re7 Ra8 60.Re1 c5 (60...Ra4 61.Rc1-+) 61.Rc1 c4! 62.Kf1 (62.Rc4 Deflection from a1 62...Ra1 A beautiful mate combination) 62...c3! 63.Ke1 (63.Rc3 A deflection 63...Ra1 The nicest combinations are those leading to mate) 63...d5 (63...Rh2 64.Kf1-+) 64.Kd1 d4 65.Rc2 Rc2 (65...Ra1 66.Ke2 Rc2 67.Kd3 Rd2 68.Ke4 Re1 69.Kd5 c2 70.Kc5 c1Q 71.Kb6 Rb2 72.Ka7 Qc5 73.Kb8 Re8) 66.Kc2 Ra3 67.Kc1 Ra2 (67...d3 68.Kb1 b5 69.g5 fg5 70.Kc1 Ra1) 68.Kd1 (68.g5 d3 69.Kb1 Rb2 70.Ka1 hg5 71.h6 d2 72.hg7 d1Q) 68...d3 69.Kc1 (69.Ke1 Re2 70.Kd1 b5 71.g5 fg5 72.Kc1 Re1) 69...Ra1 0–1. Injakina,Alina – Evloeva,Madina, RUS–ch U10 Girls, 2001.

5.Ne2 e4!? 6.Bc4 d5 –/+.

4.d4 a5

5.de5 de5 6.b5 Bd6 7.a4 0-0 8.Nf3 Re8 (8...Nbd7 9.Nbd2=+) 9.Be2 (9.Be5 Ne4 10.Bd6 Nd6+=) 9...c6 (9...e4 10.Nfd2=+) 10.0-0 (better 10.Be5!? Be7 11.Qd8 Rd8 12.Nc3+/-) 10...Qc7 11.c4 (11.Nbd2 cb5 12.Bb5 Rd8=) 11...Bg4 12.Nbd2 Nbd7 13.Qb3 (13.e4!?=+) 13...Nc5 14.Qa2 Rad8 (14...e4 15.b6 Qb6 16.Bf6 ef3 17.gf3-+) 15.Rac1 (15.h3 Bf5-/+) 15...h6 (15...e4!? 16.Bf6 gf6-/+) 16.Nb3 Nce4 (16...Bf3!? 17.gf3 Nfd7=+) 17.c5= Bf8 18.b6 Qb8 19.Na5 Bc5 20.Nb3 (better 20.Nc4 Nd7 21.Nce5 Ne5 A) 22.Ne5?! A1) 22...Be2?? 23.Qf7 Kh7 24.Qg6 Kg8 25.Nc6+- (25.Qe4?! Ba3 26.Ba3 Re5+=); A2) 22...Be6 23.Qa1 Bb6=; B) 22.Be5 Re5 23.Ne5 Be2 24.Nf7+/-) 20...Bb6-/+ 21.Rc4 Bc7 22.Qa1 Be6 23.Rc2?? (better 23.Rb4-+) 23...Bb3 24.Be5 0-1. King_of_Sacrifice (2000) - almasssss (2390), Casual Bullet game, lichess.org. 2022.

5.de5 de5 6.Qd8 Kd8 7.b5 c6 8.Be5 cb5 9.Bb5 Bd7 10.Nc3 Bb5 11.Bf6 gf6 12.Nb5 Bb4 13.c3 Bc5 14.Rd1 Ke7 15.Nc7 Ra7 16.Nf3 Nc6 17.a4 Rd8 18.Nd5 Ke6 19.e4 f5 20.Ng5 Kd6 (20...Kd7 21.Nf7 Re8 22.Nf6 Ke7 23.Ne8 Kf7 24.Nd6 Bd6 25.Rd6 fe4+–) 21.Nf7 Kd7 22.Nd8 Kd8 23.ef5 Ke8 24.Nc7 Kf7 25.Rd7 Kf6 26.f4 Kf5 (26...Ne7 27.g4+–) 27.Rd5 Kf4 (27...Kf6 28.Rc5 Ne7 29.Re5+–) 28.Ne6 Ke4 29.Rc5 (29.Nc5?! Kd5 30.Nd3 b5 31.ab5 Kc4+/-) 29...Ne5 (29...Nd8 30.Nd8 b6 31.Rc6+–) 30.Kd2 b6 31.Re1 Kf5 32.Rce5 Kf6 33.Rd5 Rb7 34.Nd8 Rg7 35.Re6 1–0. kamret (2195) – mzpbr, GameColony.com, 2003.

4.d4 Nc6

5.b5 Nb8 6.de5 de5 7.Qd8 Kd8 8.Be5 Nbd7 9.Bb2 Bb4 10.c3 Bc5 11.Nf3 h6 12.Be2 a6 13.a4 ab5 14.ab5 Ra1 15.Ba1 Re8 16.0-0 Ne5 17.Nbd2 Nf3 18.Nf3 Bd7 19.Rd1 Kc8 20.Nd4 Nd5 (20...Bd6 21.c4+/-) 21.Bf3 (21.Nb3 Nf4 22.ef4 Re2 23.Nc5 Bb5+-) 21...Bd4 (21...Nb6 22.Bh5+/-) 22.Rd4 (22.ed4?! Nb6=) 22...Nb6 23.c4 Be6 24.c5 Nd7 25.Bb7 Kb7 26.c6 Kc8 27.cd7 (worse 27.Rd7 Bd7 28.cd7 Kd7 29.Bg7 h5-/+) 27...Bd7 28.Rb4 g6 29.b6 c6? (29...cb6 30.Rb6 Be6 31.Be5+/-) 30.Bd4 (better 30.b7 Kb8 31.Bd4+-) 30...Kb7+/- 31.Ra4 c5 32.Ra7 Kb6 33.Bc5 Kc5 34.Rd7 f5 35.h3 Kc6 36.Ra7 Kd5 37.Ra6 Rg8 38.h4 h5 39.g3 Ke4 40.Kg2 Ke5 (40...Rg7!? 41.Ra4 Ke5 42.Kf3+-) 41.Kf3 Rg7 (41...g5 42.hg5 Rg5 43.Kg2+-) 42.Ra5 Kf6 43.Ra6 (better 43.Kf4!? Rg8+-) 43...Ke5 44.Ra5 Kf6 45.Kf4 Re7? (45...Rg8+-) 46.Ra6 Kf7 47.Kg5 Re4 48.Rf6 Ke7 49.Rg6 1-0. muhammadaudii (2145) - schrambo (2150), Black Lives Matter, lichess.org. 2020.

5.de5 Ne5= 6.Be5 de5=+ 7.Qd8 Kd8 8.Bc4 Bb4–/+ 9.c3 Bd6 10.Ne2 Be6 11.Be6–/+ fe6 12.0-0 Kd7 13.Nd2 Rad8 14.Rfd1 Kc8 15.Nc4 e4 16.Nd6 Rd6–/+ 17.Rd6 cd6 18.Rd1 d5 19.Nd4 Kd7-+ 20.Kf1 Rc8 21.Rc1 Rc4 22.Ke2 Ra4 23.Rc2 a6 24.Nb3 Kd6 25.Nd4 Ng4 26.h3 Ne5 27.Nb3 Rc4 28.Na5 Rc7 29.Nb3 Nc4 30.Rc1 a5 31.Nd2 b5 32.Nb3 e5 33.f3 ef3 34.Kf3? a4 35.Na1 h5 36.Nc2 Rf7 37.Kg3 g5 38.Nb4 Ne3 (38...Ne3 39.Kh2 Rf2-+) 0–1. babai – OCSCHESS (1655), internet, 2007.

4.d4 d5

5.a3 Bg4 6.f3+=.

5.de5 Bg4 6.Bb5 c6+=.

4.d4 Qe7

5.a3 Nbd7 6.Be2 a5 7.b5 e4 8.c4 =.

5.a3 Bf5 6.Nd2 ed4 7.Bd4 c5 8.bc5 +=.

5.Nd2 ed4 6.Bd4 Nc6 7.Bb5 Bd7 8.Bc6 =.

5.Nd2 e4 6.c4 d5 7.a3 Be6 8.Rc1 =.

5.d5 a5 6.b5 Nbd7 7.Be2 a4 8.c4 =.

5.d5 Qd8 6.Nf3 e4 7.Bf6 Qf6 8.Nd4 =.

4.d4 Be7

5.de5 de5 6.Qd8 Kd8 7.a3 Bd6 8.Nf3+= Nbd7 9.Bc4 Ke7 10.Nbd2 b6 11.0-0 Bb7 12.Rfd1 h6 13.Bb3 ½–½. diggitus (2175) – jrgcst (2310), net–chess.com, 2008.

5.de5+/- de5 6.Qd8 Kd8 7.a3 Re8 8.Bc4 Ne4 9.Bd5 (9.Bf7?! Rf8 10.f3 Rf7 11.fe4 Bf6=) 9...Nd6 10.Be5 Bh4 (10...Nd7 11.Bg7 Nf6 12.Nc3+/-) 11.Nf3 (11.Bg7 Re3 12.Ne2 Be6+/-) 11...Bf6 (11...Re5!? 12.Ne5 Bf6+/-) 12.Bf6+– gf6 13.Ke2 c6 14.Bb3 Be6 15.Nbd2 Kc7 16.c4 Nd7 17.c5 Nf5 18.Bc2 Rad8 19.Rhd1 Ne5 20.h3 Nf3 21.Nf3 (< 21.gf3 Nd4 22.Kd3 Nb5 23.Ke2 Nc3 24.Ke1 Rg8-+ (24...Nd1?! 25.Kd1 b6 26.Ke2=+)) 21...h6 22.Rd8 Rd8 23.Rd1 Bc4 24.Bd3 Rd3 25.Rd3 Ne7 26.Nd2 Bb5 27.Ne4 Ng6 (27...Bd3 28.Kd3 f5 29.Nd6+–) 28.f4 (28.Nf6?! Ne5 29.Ne8 Kb8=) 28...Nh4 29.g4 f5 (29...Bd3 30.Kd3 Nf3 31.Nf6+–) 30.Nd6 Bd3 31.Kd3 fg4 32.hg4 f5 (32...f6 33.Ne8 Kd7 34.Nf6 Ke6 35.Ng8+–) 33.Nf5 Nf5 34.gf5 h5 (34...Kd8 35.e4+–) 35.Ke2 b6 (35...Kd8+–) 36.f6 Kd7 37.f5 ( 37.b5 cb5 38.f7 Ke7+–) 37...Ke8 (37...bc5 38.bc5 Ke8+–) 38.b5! bc5 (38...cb5 39.c6) 39.bc6 h4 40.f7! 1–0. mrkt – Mafia, ChessWorld.net, 2003.

5.de5 de5 6.Qd8 Bd8 7.Be5+/- 0-0 8.Bd3 Nc6 9.Bc3 Nd5 10.a3 Nc3 11.Nc3 Be6 12.0-0-0 a6 13.Nf3 Be7 14.Ne4 a5 15.Neg5 h6 16.Ne6 fe6 17.Bc4 ab4 18.Be6 Kh8 19.ab4 Nb4 20.Kb1 Bf6 21.Nd4 c5 22.c3! cd4 23.cb4 de3 24.fe3 Rfe8 25.Bd5 Re3 26.Kc2 Rc3 27.Kd2 Rd8 28.Ke2 Rc2 29.Kf3 Rc3 30.Kg4 b6 31.Rhe1 Rf8 32.Re6 Bd8 33.g3 Bc7 34.Be4 Rc4 35.Rd7 Bd8 36.b5! Rc5 37.Bd3 Rg5 38.Kh3 h5 39.Red6 Bf6 40.Rb6 h4 41.Kh4! Rb5 42.Rf6!! g5 (42...Rf6 43.Rd8 Rf8 44.Rf8#; 42...gf6 43.Bb5) 43.Kh5 1–0. vik – smugo, Internet, 2001.

5.de5 de5 6.Qd8 Bd8 7.Be5 0-0 8.Nf3 Nc6 9.b5 Ne5+= 10.Ne5 Re8 11.Nf3 Bg4 12.Be2 c5 13.0-0 Ne4 14.h3 (14.h3 Bf6 15.c3 Bc3 16.Nc3 Nc3 17.Bc4 Bf3 18.gf3=). bentengutama (1900) – chessh (1710), net–chess.com, 2003.

4.d4 Bg4

5.Be2 Be2 6.Ne2 e4 7.0-0 d5=+ 8.c4 (8.a3 a5 9.b5 c6=) 8...c6 (8...Bb4 9.cd5 Qd5 10.Nbc3=+) 9.Nd2 (better 9.a3!?=) 9...Bb4-/+ 10.cd5 Bd2 (10...cd5 11.Rb1-/+) 11.Qd2 (better 11.dc6!? Nc6 12.Qd2=) 11...cd5-/+ 12.a4 0-0 13.Nf4 Nc6 14.Rfc1 Rc8 15.Ba3 Re8 16.Rab1 b6 17.Qa2 Na5 (better 17...Qd7!?-/+) 18.Rc8=+ Qc8 19.Nd5 Nd5 20.Qd5 Qc6 (better 20...Qc2!? 21.Qb5 Rc8=) 21.Qc6+/- Nc6 22.g3 (22.Rc1 Na5+/-) 22...f5 (22...Ne7 23.Be7 Re7 24.a5=) 23.Kf1 (better 23.Rc1!? Nd8 24.Rc8+/-) 23...Kf7= 24.Ke2 Ke6 25.Rc1 Kd7 26.h3 Rc8 27.g4 g6 (27...f4!?=+) 28.gf5+= gf5 29.Rg1 h5 30.Rg5 Na5 31.Rf5 Rc2 32.Kf1 Nc4 33.Bb4 a5 34.Bf8 Ra2 35.Rh5 Ra4 36.Rb5 (36.Kg2 Ra1+=) 36...Ra2 37.h4 a4 (37...Kc6 38.Rg5 Nb2 39.d5 Kd7 40.h5+-) 38.h5 Kc6 (better 38...a3!? 39.h6 Ra1 40.Kg2 a2=) 39.Rb4 b5 (better 39...Nb2 40.h6 Nd3 41.Rb6 Kb6 42.Bc5 Kb5+-) 40.h6 Ra1 (40...Nd2 41.Kg2 Nf3+-) 41.Kg2 Ra2 (41...Ne3 42.fe3 Ra2 43.Kg3+-) 42.h7 (better 42.Rc4 bc4 43.h7 a3+-) 42...Ne3 43.Kg3 Nf5 44.Kf4 (better 44.Kg4 Ne3 45.Kg5 Rf2 46.h8Q Rg2 47.Kf4 Nd5 48.Ke4 Re2 49.Kf3+-) 44...Rf2+/- 45.Ke4?? (better 45.Kg5 Rh2 46.Kf5 Rf2 47.Ke4 Rf8 48.d5 Kc5 49.Rb1+=) 45...Rh2?? (better 45...Ng3 46.Kd3 Rf3 47.Kc2 Rf8 48.d5 Kc5-+ (48...Kd5?! 49.Rb5 Kc4 50.Rg5-/+)) 46.Bg7?? (better 46.d5 Kb6 47.Kf5 Rh7 48.Rf4+-) 46...Ng7-+ 47.h8Q (47.d5 Kb6 48.Ke5 Rh7-+) 47...Rh8 48.Rb1 Re8 49.Kd3 Ne6 50.Rc1 (50.d5 Kd5 51.Rb5 Nc5 52.Kc3 a3-+) 50...Kb6 51.Ra1 Rd8 52.Rh1 Rd4 53.Kc3 (53.Kc2 b4 54.Rh6 Rd6-+) 53...Rc4 54.Kd3 Nc5 55.Kd2 Ka5 (better 55...a3!? 56.Ke3 a2 57.Ra1 Re4 58.Kf3-+) 56.Rh6 (56.Ke3 b4 57.Rh8 b3-+) 56…a3 0-1. muhammadaudii (2110) - star1990 (2095), lichess.org, 2020.

5.Ne2 Nbd7=+ 6.h3 Bh5 7.c4 h6 8.Nbc3 Be7 9.c5 0-0 10.cd6 Bd6 11.de5 Be5 12.Qc2 Re8 13.e4? Nb6 14.Nc1? Bg6 15.Bd3 a6 16.0-0 c6 17.Na4? Bb2 18.Nb2–/+ Be4 19.Rd1 Bd3 20.Ncd3 Qc7 21.Nc5 Nbd5 22.Nbd3 Re7 23.a4 Rae8 24.Rd2 Nb4-+ 25.Nb4?? Re1 (25...Re1 26.Re1 Re1) 0–1. gtate (1920) – grahamtrue (1880), net–chess.com, 2005.

4.Be2 a5

5.b5 Nbd7 6.Nf3 Nc5 (6...Be7 7.c4=) 7.d4 ed4 8.Qd4 Ne6 9.Qc4 d5 10.Qc3?? (10.Qh4 Be7=) 10...Ne4 (10...Bb4 11.0-0 Bc3 12.Nc3-+) 11.0-0?? (better 11.Qd3=) 11...Nc3-+ 12.Nc3 d4 (12...c6!? 13.Rad1-+) 13.ed4 (13.Rfd1 Bd6 14.Nd4 Qh4-+) 13...Bd6 14.Ne5 (14.Ne4 0-0-+) 14…Nf4 0-1. fishfry (2145) - allyouneedisluft (2715), Hourly Crazyhouse Arena, lichess.org, 2018.

5.b5 Be6 6.c4 c6 (6...e4 7.d3=) 7.a4 Nbd7 8.d4 ed4 9.ed4 d5 10.Qb3 (10.c5!?=) 10...dc4=+ 11.Bc4 Nd5 12.Nf3 N7b6 13.bc6 bc6 (13...Bb4 14.Nbd2 Nc4 15.Qc4=+) 14.Be2 (14.0-0!?=+) 14...Nf4-/+ 15.Qe3?? (15.Qc2 Bb4 16.Kf1 Ne2 17.Ke2 0-0-/+) 15...Ne2 (better 15...Ng2 16.Kd2 Ne3 17.fe3 Nc4 18.Bc4 Bc4-+) 16.Qe2-/+ Be7 (16...Bb4 17.Nbd2 0-0 18.0-0-/+) 17.0-0 (17.Ne5 Bb4 18.Nd2 Qg5-/+) 17...Bc4-/+ 18.Qe5 (better 18.Qe4!? Bf1 19.Qc6 Nd7 20.Kf1-/+) 18...Bf1-+ 19.Qg7? (better 19.Kf1 0-0 20.Qf5-+) 19...Bf6 20.Qg4 Bc4 (20...Bd3 21.Nc3 Nc4 22.Re1 Kf8 23.Bc1-+) 21.Nbd2 (21.Qe4 Kf8-+) 21...Be6 22.Qe4 Qd5 23.Qe3 (23.Qf4 Bg7-+) 23...Nc4 (better 23...Bg7 24.Qf4-+) 24.Qb3 (24.Nc4 Qc4 25.Qh6=) 24...Nd2 25.Qd5 Bd5 26.Nd2 0-0 (26...c5 27.Rc1 cd4 28.Rc5-+) 27.Bc3 Rfe8 28.Rd1 (28.Rc1 Re2 29.Kf1 Rae8-+) 28...Rab8 (28...c5 29.Nf1 Bc4 30.Rc1-+) 29.Ba5 (29.Nf1 Bb3 30.Rc1 Ba4 31.Ba5 Re2-+) 29...Re2 (29...Bd4!? 30.Nf1 Bg7 31.Bc7-+) 30.Kf1 Re7 31.g3 (31.Bc3 c5! 32.Rc1 cd4-+) 31...Ra7 32.Bc3 Ra4 (32...c5 33.dc5 Bc3 34.Nb1 Bc4 35.Kg1-+) 33.Rc1 Bd4 34.Bd4 Rd4 35.Nb1 (35.Rc2 c5! 36.f3 c4-+) 35...Bc4 (35...Rb2 36.Nc3 Bf3 37.Ke1-+) 36.Kg2 (36.Kg1 Be6 37.Kg2 Rb3-+) 36...c5 (36...Rb2 37.Nc3-+) 37.Nc3 Bd5 38.Kh3 (38.Nd5 Rd5 39.Rc2 Kg7-+) 38...Rd3 (better 38...Bf3 39.g4 Rb3 40.Kg3-+) 39.Na4 (39.Nd5 Rd5 40.Rc2 Rc8-+) 39…c4 0-1. ClayPigeons (2155) - doctor_of_love (2220), Rated Bullet game, lichess.org, 2020.

5.b5 Be7 6.Nf3=.

5.b5 g6 6.Nf3 Bg7 7.0-0 (7.d4 ed4 8.ed4 0-0=) 7...0-0 (7...e4 8.Ne1=) 8.c4 c6 9.d4 e4 10.Nfd2 d5 11.Ba3 Re8 12.Nc3 Be6 13.Rb1 Nbd7 14.bc6 bc6 15.Qa4 (15.cd5 Bd5 16.Qc2 Rb8+/-) 15...Qc8 (better is 15...Nb6!? 16.Qc2 Nc4 17.Nc4 dc4+=) 16.Rfc1+/- Bf8 (16...Nb8 17.cd5 Bd5 18.Nd5 Nd5 19.Nc4+–) 17.Bf8 Rf8 (17...Nf8 18.cd5 Bd5 19.Nd5 Nd5 20.Rc6+–) 18.cd5 (18.cd5 Nd5 19.Nce4+–) 1–0. Woelfelschneider,Peter – Simanek, 2009.

4.Be2 Nbd7

5.Nc3 d5 6.a3 a5=.

5.c4 c6 6.Nf3 d5 (6...e4 7.Nd4 c5=) 7.d4 (better 7.c5!? e4 8.Nd4=) 7...e4-/+ 8.Nfd2 Bb4 9.Qb3 Bd2 (9...Qe7 10.Ba3 Ba3 11.Na3 dc4 12.Nac4-/+) 10.Nd2=+ 0-0 11.0-0 Re8 12.a3 Nf8 13.Rac1 (13.Rab1 Re7=+) 13...Ng6 14.Rfd1 (14.cd5 Nd5 15.Rc5 Qg5-/+) 14...Bg4-/+ 15.Bg4 Ng4 16.h3 (16.Qb7?? Qh4 17.Nf1 Qf2 18.Kh1 Rab8 (18...Ne3?! 19.Ne3 Qe3 20.Bc3-+) 19.Qc6 Re6 20.Qe6 fe6-+) 16...Nh6 (16...Nf6 17.Qc2-/+ (17.Qb7? Rb8 18.Qc6 Rb2-+)) 17.Nf1 (17.cd5 cd5 18.Rc5 Ne7=+) 17...Qg5 18.Ng3 Nf5 19.Ne2 (better 19.Nf5!? Qf5 20.cd5 (20.Qb7? Reb8 21.Qc6 Ne7-+) 20...cd5 21.Rc5-/+) 19...Ngh4-+ 20.g3 Nf3 21.Kg2 h5 (better 21...N5h4!? 22.Kf1 Qf5-+) 22.cd5=+ cd5 23.Qd5?? (better 23.Rc5=+) 23...N5h4-+ 24.Kf1 Qd5 (better 24...Nh2 25.Kg1 N4f3 26.Kg2 Qd5-+) 25.Nf4 (25.gh4 Qf5 26.Nc3 Nh4-+) 25...Qg5 (25...Qb5 26.Ne2 Nh2 27.Kg1 Qe2 28.gh4 Nf3 29.Kh1 Qf2 30.Rc2 Qg3 31.d5 Qh3 32.Rh2 Qh2) 26.Rc5 Qe7 (26...Nf5 27.Kg2-+) 27.Nh5 (27.gh4 Qf6-+) 27...Ng6 (better 27...Qe6 28.gh4 Qb3 29.Rdc1-+) 28.d5 (28.Kg2-+) 28...Qc5 29.d6 Qc2 30.Rd5 Qc4 (30...Qb1 31.Bc1 Qc1 32.Rd1 Qd1 33.Kg2 Qg1) 31.Kg2-+ Qd5 32.Ng7 (32.d7 Red8 33.Kh1 Qd1 34.Kg2 Qg1) 32...Qd1 (32...Ngh4 33.gh4 Nh4 34.Kg1 Qd1 35.Kh2 Qf3 36.Ne8 Qg2) 33.h4 Qg1 34.Kh3 Qh1 (34...Nfe5 35.Be5 Ne5 36.g4 Qg4 37.Kh2 Nf3 38.Kh1 Qg1) 35.Kg4 Nge5 36.Kf4 Kg7 (36...Qh3 37.Be5 Re5 38.d7 Kg7 39.d8Q Qf5) 37.Bd4 (37.Ke4 Ng5 38.Kd4 Rac8 39.hg5 Rc4) 37...Re6 (37...Qh3 38.Ke4 Nd2 39.Kd5 Qe6 40.Kc5 Qc4) 38.Be5 (38.g4 Rf6 39.Ke4 Nd2 40.Ke5 Qe4) 38...Ne5 39.g4 (39.Kg5 Qf3 40.d7 Rg6) 39…Qf3 (39...Qf3 40.Kg5 Qg4) 0-1. ClayPigeons (2165) - mostafaxo (2165), Rated Bullet game, lichess.org, 2019.

5.Nf3 g6 (5...e4 6.Nd4=) 6.c4 (6.Nc3 Bg7=) 6...Bg7 7.d4 (7.Nc3 0-0=) 7...ed4 (7...a5 8.b5=) 8.ed4 (8.Nd4 a5=) 8...0-0 (8...a5 9.b5=) 9.0-0 (9.Nc3 a5 10.ba5 Ra5=) 9...b6 (9...a5 10.b5=) 10.Nbd2 (10.Nc3 Re8=) 10...Bb7 11.Bd3 (11.Re1 c5=) 11...Re8 12.Qc2 Rc8 (12...a5 13.b5=) 13.Rfe1 (13.Rae1 c5+=) 13...c5 14.Re8 (14.bc5 bc5 15.Re8 Qe8+=) 14...Ne8 15.bc5 dc5 16.d5 Ndf6 (16...Bb2!? 17.Qb2 Qf6 18.Qf6 Ndf6+=) 17.Be5 (17.a4 Nd6 18.Re1 Rc7+=) 17...Ng4 (17...b5 18.Rb1 a6 19.h3+/-) 18.Bg7 Ng7 19.Qb3 (19.Re1 b5 20.Rb1 a6+/-) 19...Qf6 (19...Nh5 20.Re1+/-) 20.Re1 Qf4?? (better is 20...Qd8+/-) 21.Re4+– Qf5 (21...Qd6 22.Rg4 f5 23.Rg5+–) 22.Re7 Qf6 23.Rb7 Qa1 (23...Ra8 24.Qa4 Nh5 25.Qd7+–) 24.Qb1 Qc3 (24...Qb1 25.Bb1 Ne8 26.Ra7+–) 25.Ne4 Qa5 (25...Qa3 26.h3 Nh6 27.Nfg5+–) 26.h3 Nh6 (26...Qa6 27.Rd7 f5 28.hg4 fe4 29.Qb2+–) 27.Ne5 Qa6 28.Nf6 Kh8 29.Qc1 Qb7 (29...b5 30.Qh6 Qf6 31.Nf7 Qf7 32.Rf7 Rg8 33.Bg6 bc4 34.Qh7) 30.Qh6 1–0. Janek – Stoluf, internet, 2017.

4.Be2 Bf5

5.c4 Nc6 6.b5 Ne7 (6...Nb4!? 7.d3 e4+=) 7.Nf3= h6 8.0-0 Ng6 9.d3 Be7 10.h3 Nh7 (10...a6 11.Qc2=) 11.Nbd2 Bf6 12.a4 0-0 13.Qb3 Nh4 (13...a6 14.Ne4+=) 14.Nh4 Bh4 15.Bf3 Rb8 16.a5 Re8 (16...Ng5 17.b6+=) 17.a6+/- b6 18.Bb7 Nf8 19.Bc6 Nd7 20.Nf3 Nc5 21.Qa2 Rf8 22.e4 Be6 23.Rad1 f5 (23...Qe7 24.d4 ed4 25.Nh4 (25.Rd4?! Bf6=) 25...Qh4 26.Bd4 Ne4 27.g3 Ng3 28.fg3 Qg3 29.Qg2 Qg2 30.Kg2 Bc4 31.Rfe1+/-) 24.ef5 (24.d4 fe4 25.Nh4 Qh4 26.dc5 bc5+–) 24...Bf5 25.Qa3 Kh8 26.Qc3 (26.Rfe1 Ne6+/-) 26...Ne6 (26...Bf6 27.d4 Na4 28.Qb4 Nb2 29.Qb2 ed4 30.Nd4+=) 27.Be4 (27.Rfe1 Bf6 28.Qd2 Nf4+=) 27...Bh7 0–1. GuestHJQM – GuestXLKF, freechess.org, 2017.

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

5.Nf3 Be7 6.0-0 0-0 (-->4.Nf3 Be7 5.Be2 0-0 6.0-0 Bf5).

4.Ne2 b6

5.f4 Bb7 6.fe5 (6.Ng3 Nbd7=+) 6...de5=+ 7.Be5 Bd6 (better 7...Bb4!? 8.a3 Bc5=+) 8.Bd6+= Qd6 9.Nbc3 (9.a3 0-0=) 9...Nc6 (9...Qb4 10.Nf4=) 10.a3 0-0-0 11.Ng3 Rde8 12.Be2 Ne5 (12...Rd8 13.Bf3 Ne5 14.Bb7 Kb7 15.Nf5+/-) 13.0-0 h5 14.Nf5 (worse 14.Bh5 Nh5 15.Nh5 Qh6-/+; 14.Nh5?! Nh5 15.Bh5 g6 16.Bg4 Ng4 17.Qg4 f5=) 14...Qd7 (14...Qc6 15.e4 Ne4 16.Bb5+/-) 15.Ng7 Reg8 16.Rf6 Rg7 17.Bf1 (17.Rf2 Rhg8 18.e4 Qd4+=) 17...Ng4 (17...Rhg8 18.Rf2 Ng4-/+) 18.Rf4+/- f5 (18...Rhg8 19.g3 h4 20.Bh3+= (20.gh4 Ne3 21.Kf2 Nd1 22.Rd1 Rg4 23.Rg4 Qg4 24.d3 Qf3 25.Ke1 Qe3 26.Ne2 Rg1 27.h5 Bg2 28.d4 Rf1)) 19.Qe2 h4 20.h3 (20.Qd3 h3 21.Qd7 Kd7+-) 20...Ne5 21.Qf2 Rf7 (21...Bg2 22.Bg2 Rhg8 23.Rd1+=) 22.Kh2 Rg8 23.d4 (better 23.Rh4 Rfg7 24.Rd4+-) 23...Nc4?? (better 23...Ng6 24.Rf3 Qe6+/-) 24.Bc4+- a6 (24...Rg2 25.Qg2 Bg2 26.Bf7 Qf7 27.Kg2 Qc4+-) 25.Bf7 (25.e4 Rfg7 26.Bg8 Rg8 27.Rf5 Kb8+-) 25...Qf7 (25...Rg2 26.Qg2 Bg2 27.Bg6+-) 26.Rg1 Rf8 (26...Qc4 27.Nb1+-) 27.Rh4 (better 27.Rf1 Qc4 28.Rf5 Rf5 29.Qf5 Kb8 30.Qf6+-) 27...f4 (27...Qc4 28.Ne2 Qa2+-) 28.Rf4 Qf4 29.ef4 Re8 30.Qg3 (better 30.g4 Kd8+-) 30...Re4 31.Qg4 (31.Qg8 Kd7 32.Ne4 Be4+-) 31...Kd8 32.Ne4 Be4 33.Qg8 (33.Re1 Bg6 34.Qg6 Kc8 35.Re8 Kb7 36.Qe4 c6 37.Qe7) 33...Ke7 34.Re1 Kd6 35.Re4 (35.Re4 Kc6 36.Qa8 Kb5 37.d5 a5 38.ba5 c6 39.Qc6 Ka5 40.Qa4; 35.c4 c5 36.Qf8 Kc7 37.Qf7 Kd8 38.Re4 cd4 39.Re8) 1-0. FeegLood (2180) - darktangent (1665), lichess.org, 2015.

5.Ng3 Na6 (5...c6!?=) 6.Bb5+= Nd7 7.Qf3 Rb8 8.Bc4 (8.a3 c5+=) 8...Nf6= 9.Bb5 Nd7 10.a3 Bb7 11.Bc6 Qc8 12.0-0 Bc6 13.Qc6 Qb7 14.Qb7 Rb7 15.f4 Be7 16.Nc3 0-0 17.Nf5 Bf6 18.Nd5 Re8 19.Nf6 Nf6 20.fe5 de5 21.Rf3 (21.d4 Nd7+/-) 21...Re6 22.Raf1 Ne4 23.Bc1 (23.d3 Nd6+=) 23...c5= 24.d3 Nc3 25.Bb2 (25.Bd2 e4 26.R3f2 Na4=) 25...Na4+= 26.Be5 Re5 27.Nd6 Rbe7 28.Rf7 Rf7 (better is 28...h6 29.Rf8 Kh7+=) 29.Rf7+/- Rd5 30.Ra7 Rd6 31.Ra6 Nc3 32.bc5 Rf6 33.g3 bc5 34.Rf6 gf6 35.Kf2 Kf7 36.Kf3 Ke6 37.g4 Ke5 38.a4 (better is 38.h4+=) 38...Na4–/+ 39.d4 (better is 39.c4!?–/+) 39...cd4-+ 40.ed4 Kd4 41.Kf4 Nc3 42.Kf5 Ne4?? (42...Nd5 43.h3 h6–/+) 43.c4= Ke3 44.h4 (44.c5 Kf3 45.c6 Nd6 46.Ke6 Nb5=) 44...Kf3 (44...h6!?+=) 45.g5= fg5 46.hg5 Nd6 47.Kf6 Kg4 48.Kg7 ½–½. Otte,Marco – Walstra,Gerrit, Wag.Intcomp, 1997.

4.Ne2 Nc6

5.a3 Be6 6.b5 (6.d4 a6=) 6...Na5+= 7.Ng3 a6 (7...Nc4 8.Bc4 Bc4 9.a4+=) 8.d4= ed4 9.Bd4 ab5 10.Bb5 c6 11.Bd3 Nd5 (11...Nc4!?=) 12.0-0 (12.Nd2 Nf6+=) 12...Qc8 (12...c5 13.Bb2+=) 13.c4 Bg4?? (better is 13...Ne7 14.Nd2 c5+/-) 14.f3+– c5 (14...Nc4 15.Bc4 Be6+–) 15.cd5 cd4 (15...Bd7 16.Bc3+–) 16.fg4 1–0. Wall,Bill – Johnny13, internet, 2003.

5.b5 Ne7 6.d4 e4 (6...Ng6 7.Ng3=) 7.Nf4 (7.c4 d5=) 7...d5 (7...c6 8.c4=) 8.c4 c6 9.Nc3 (9.bc6 bc6 10.Qa4=) 9...Be6 (9...cb5!? 10.Nb5 a6=) 10.Be2 (10.bc6 Nc6 11.a3 Qd7+=) 10...a6 (10...Bd7 11.bc6 Bc6 12.Qb3+=) 11.Ne6+/- fe6 12.bc6 (12.ba6 ba6 13.Rb1 Nf5+/-) 12...bc6 (12...Nc6 13.Rb1+=) 13.0-0 (13.Rb1 Nf5+/-) 13...Rb8 (13...Nf5 14.Rb1+=) 14.Ba3 (14.Rb1+/-) 14...g6 (better is 14...Qa5!? 15.Qa4 Qa4 16.Na4 Ng6 17.Bf8 Rf8 18.cd5 cd5 19.Ba6 e5+/-) 15.Qa4+– a5 (15...Qc8 16.Rab1 Rb1 17.Rb1+–) 16.cd5 (16.Rfc1 Kf7+–) 16...ed5+/- 17.Be7 (17.Rab1 Rb1 18.Rb1 Qc7+–) 17...Be7 18.Qc6 Kf8 19.Nb5 Rc8 (19...Kg7 20.Rfc1+/-) 20.Qe6 (20.Qa6 Kg7+–) 20...Ke8? (better is 20...Kg7+/-) 21.Nd6!! (21.Nd6 Qd6 22.Qc8 Qd8 23.Rfc1+–) 1–0. Wall,Bill – Daave, internet, 2000.

5.c3 d5 6.Ng3+=.

5.c3 Bg4 6.f3 (6.d4 ed4 7.ed4 d5+=) 6...Be6 7.Ng3 (7.d4 a6+=) 7...d5 (7...h5 8.b5 Ne7 9.d4+=) 8.Bb5 a6 (8...Bd6 9.0-0+=) 9.Bc6 bc6 10.0-0 a5 (10...c5 11.f4+=) 11.d4 (11.d3 Bd6+=) 11...ed4 (11...ab4?! 12.de5 Nd7 13.f4=) 12.Qd4 ab4 (12...Bd6 13.ba5 Bg3 14.hg3+=) 13.cb4= Ra4 14.a3 c5 15.Qd1 Bd7 (better is 15...Ra8=) 16.Nc3+/- Ra6 17.Nd5 Rd6? (better is 17...Nd5 18.Qd5 cb4 19.ab4 Rd6 20.Qe4 Re6+–) 18.Bf6+– gf6 19.Ne4 Re6 20.bc5 1–0. Wall,Bill – Senag, internet, 2004.

4.Ne2 Be6

5.d4 ed4 6.Nd4= (worse is 6.ed4 d5 7.a3 Bd6+=) 6...Nbd7 7.Be2 Be7 8.0-0 0-0 9.Nd2 c6 10.a3 Qc7 11.c4 a5 12.Qb3 a4 13.Qc2 Nb6 14.Rac1 Qd7 15.Ne6 Qe6 16.Nf3 h6 17.Bd3 Qd7 18.Rfd1 Qc7 19.Nd4 Rfe8 20.Nf5 Qd8? (better is 20...Nbd7!?+/-) 21.Be2 (better is 21.Bf6!? Bf6 22.Nd6 Re7+–) 21...Nc8 22.Bf3 Bf8 23.Qc3 Re6 24.Rc2 Ne7 25.Nd4 Re5 26.Qd3 Ng6 27.Rcd2 (27.b5 Re7 28.bc6 Ne5+–) 27...Re8 (27...Qe8+/-) 28.Qc2 (28.Nf5!? Re6+/-) 28...Ne5 (28...Nh4 29.Be2+/-) 29.Be2 Qc7 30.Nf5 Red8 (30...c5 31.Nd6 Bd6 32.Rd6 cb4 33.ab4+/-) 31.h3 (31.f4 Ned7 32.Nd6 Bd6 33.Rd6 c5+–) 31...Rd7 32.f4 Ng6 33.Nh6! gh6 34.Bf6 Qb8 (34...Bg7 35.Qc3 Bf6 36.Qf6+–) 35.Bd3 Kh7 (35...Qe8 36.Bf5 Qe3 37.Kh1+–) 36.Bf5 Rc7 37.h4 h5 38.Re1 (better is 38.g4!? Bg7 39.Qb2 Qe8+–) 38...b5?! (38...Be7 39.Bg5 Bg5 40.fg5 d5+–) 39.Qd1 1–0. Czerniawski,Krzysztof (1695) – Molenda,Mikolaj, Ogolnopolska Olimpiada Mlodziezy Poland, 2013.

5.d4 Nbd7 6.Nd2+=.

5.Ng3 a6 6.c4 Be7 7.Be2 0-0 8.Nc3 Nbd7 9.Qc2 (9.0-0 c5 10.a3 Qc7=) 9...d5+= 10.cd5 Nd5 11.Nd5 Bd5 12.e4 Be6 13.a3 Rc8 14.0-0 c5 15.b5 ab5 (15...c4 16.ba6 ba6 17.Nf5=) 16.Bb5 Bd6 17.Nf5 Bf5 18.ef5 Nf6 (18...Qc7 19.Rfe1=) 19.Rae1 Ng4 (19...Qb6 20.a4+=) 20.h3+/- Qh4?? (better is 20...Qa5 21.Qd3 Nf6+=) 21.Qe4 (21.hg4?! e4 22.g3 Bg3 23.fg3 Qg3 24.Kh1 Qh3 25.Kg1 Qg3 26.Kh1 Qh3 27.Kg1 Qg3=) 21...Qg5 22.Qg4 Qd2 (22...Qg4 23.hg4 Rfd8 24.d3+–) 23.Re2 (23.Be5 Be5 24.Re5 Qd4 25.Qd4 cd4+–) 23...Qa5 (23...Qf4 24.Qf4 ef4 25.f6+–) 24.f6 g6 25.Qg5 Rfd8 26.a4 c4 27.Be5 Rc5 (27...Bb4 28.Qh4+–) 28.Rfe1 (28.Rc1 Kh8+–) 28...Bf8 (28...Be5 29.Kf1 Qc3+–) 29.Qf4 c3 30.Rc2 Rd2 (30...Rcc8 31.Qf3+–) 31.Rec1 (better is 31.Bc3 Qb5 32.Bd2 Qc6 33.Rc5 Qc5+–) 31...Qd8 32.Rc3 (32.Bc3?! Rc2 33.Rc2 Qd1 34.Kh2 Qc2+=) 32...Rd1 33.Rd1 Qd1 34.Kh2 Re5 (34...Rc3 35.Bc3 Qd5+–) 35.Qe5 Bd6 (35...Qd6 36.Qd6 Bd6 37.g3 h5+–) 36.Rc8 Bf8 37.Rf8! Kf8 38.Qb8 (38.Qe8) 38...Qd8 39.Qd8 1–0. Otte,Marco – Vos,Harry, Wag.Ext3vsV'daal5, 1997.

5.Ng3 Be7 6.Be2 0-0 7.0-0 a6 8.d4 c6 (8...Nc6 9.a3=+) 9.de5 de5 10.Be5 Bb4 11.c3 (11.Qd8 Rd8 12.Bf6 gf6=) 11...Bc5 (11...Nbd7 12.cb4 Ne5 13.Nc3=) 12.Qc2 Nbd7 13.Rd1 Qc8 (worse 13...Ne5 14.Rd8 Rfd8 15.Nd2+=) 14.Bd4 Bd4 (14...Rd8 15.Nd2=) 15.ed4 (15.cd4 Rd8=) 15...Nd5 (15...Re8 16.Nd2=) 16.Bd3 h6 17.Bh7 Kh8 18.Nf5?? (18.Bf5 N7f6=) 18...Bf5?? (better 18...N7f6 19.Ng7 Kg7-+) 19.Bf5+= (19.Qf5? N5f6-+) 19...Qe8 (19...Re8 20.c4 Ne7 21.Nc3+=) 20.Nd2 N7b6 (20...Qd8+=) 21.Ne4 (21.Rab1 Qd8+–) 21...Rd8 (21...g6 22.Bh3+=) 22.Rd3 (22.Rab1!?+–) 22...Nc4 23.Rh3 Nd6 (23...Qe7 24.Qc1 Kg8 25.Rb1=) 24.Nd6 Rd6 25.Qd2 Rf6 26.Bb1 (26.Re1 Qd8 27.Re5 Re8+=) 26...Nf4 (26...Qe7 27.Bd3=) 27.Re3 Qd7 28.Qc2 (28.Be4 Re8=) 28...Ng6 (28...Rg6 29.g3=) 29.h4 (29.Qb2 Nf4+=) 29...Qg4 (better 29...Re8 30.h5 Re3 31.fe3 Nf8=) 30.Rh3?? (better 30.g3+=) 30...Nh4?? (better 30...Re8 31.Re3 Re3 32.fe3 Qg3-+ (32...Qh4?! 33.Qe2–/+)) 31.Qh7 1–0. aravind555 (1635) – kingqueenbishop (1625), lichess.org, 2019.

4.Nf3 a5

5.ba5 Ra5 6.Bc3 Ra8 7.a4+=.

5.ba5 Ra5 6.Bc3 Ra8 7.Bc4 Be7 8.0-0 0-0 9.d3 Nbd7 10.Bb3 Nc5 11.Qe2 Bg4 12.h3 Bh5 13.e4 Qd7 14.Qe3 Bf3 15.Qf3 Nb3 16.cb3 Qb5 17.Nd2 Nd7 18.a4 Qc6 19.d4 ed4 20.Bd4 Bf6? (better is 20...Ne5!? 21.Qg3 Qd7+=) 21.Rac1 Qa6 22.Bf6 Nf6 23.Rc7 Qa5 24.Qc3 Qb6 (24...Qc3!? 25.Rc3 Rfe8+–) 25.Rc1+– Rae8 26.Qd3 Nh5 27.R1c4 Nf4 28.Qe3 Ne6?? (better is 28...Qe3 29.fe3 d5+–) 29.Qb6 (29.Qb6 Nc7 30.Rc7+–) 1–0. Trkn – guest7547, ICC, 2004.

5.ba5 Nc6 6.Bb5= Ra5 7.Nc3 Be7 8.0-0 0-0 9.Rb1 (9.Bc6 bc6 10.e4 Bg4=) 9...Be6 10.a4 d5 (better is 10...Na7!?+=) 11.Bc6+= bc6 12.Ne5 Qd6 13.d4 (13.f4 Nd7 14.Ba3 Qa3 15.Nc6 Ra6 16.Ne7 Qe7+=) 13...c5 (13...Bf5 14.Re1+=) 14.Ba3+/- c6 (14...Nd7 15.Nb5 Qa6 16.Nc7+/-) 15.Rb7 (better is 15.Nb5 cb5 16.Bc5+/-) 15...Rb8? (better is 15...Bc8 16.Re7! Qe7 17.Nc6 Qc7 18.Na5 Qa5+–) 16.Rb8+– Qb8 17.Nc6 Qc7 18.Na5 Qa5 19.Qe1 Ne4 (19...cd4 20.Nd5! Qd5 21.Be7 Nd7+–) 20.Ne4 Qe1 21.Re1 Bd7 (21...de4 22.Rb1 f6+–) 22.Nc5 Bc5 (22...Ba4 23.Na4 Ba3 24.Ra1+–) 23.Bc5 Ba4 (23...f5 24.a5 Kf7 25.a6+–) 24.Ra1 Bc6 25.Ra6 Bb7 26.Rb6 f5 27.Rb7 g6 28.Rd7 (28.Rd7 h6 29.Rd5+–) 1–0. Pachurka,Roland – Rueschenbeck,Thorsten, DESC, 2002.

5.b5 Be6 6.a4 c6 7.c4 Be7 8.Be2 0-0 9.0-0 d5 (9...cb5!? 10.ab5 Qc7=) 10.cd5 Bd5 11.Nc3 (11.Ne5!? cb5 12.Bb5+/-) 11...e4= 12.Nd5 cd5 (12...Nd5!? 13.Ne1 f5=) 13.Nd4+= Nbd7 14.d3 Rc8 15.de4 de4 16.Rc1 Rc1 17.Qc1 Qc8 18.Qc8 Rc8 19.Rc1 (19.f3!?=) 19...Rc1+= 20.Bc1 b6 (20...Bb4!?+=) 21.Bb2 Nc5 22.Bd1 Nd5 23.Nf5 Bf6 24.Bf6 Nf6 25.Nd4 (25.Nd6 Nd5=) 25...Nfd7 26.Nc6 Nd3 27.Kf1 (better is 27.Ne7!? Kf8 28.Nc8=) 27...N7c5–/+ 28.Ne7 Kf8 29.Nd5 Nd7 (better is 29...Nb2!? 30.Ke2 Nba4 31.Ba4 Na4–/+) 30.Bc2 N3c5 31.Ke2 f6 32.f3 f5 33.fe4 fe4 34.Nc3 (better is 34.Kd2!?+/-) 34...Nf6= 35.h3 Ke7 36.g4 g5 37.Kd2 Kd6 38.Bd1 Ke5 39.Ne2 Nd5 40.Nd4 Nb4 41.Nc6 Kd6 42.Nb4 ab4 43.Bb3?? (43.Kc1 Kd5-+) 43...Ke5 (better is 43...Nb3 44.Kc2 Nd4 45.Kb2 Nf3-+) 44.Bc2 (better is 44.Kc2!?–/+) 44...h6 45.Ke2 (better is 45.Bd1-+) 45...b3 46.Bb1 Nd3?? (better is 46...Kd5 47.Kd1 Na4-+) 47.Bd3+– ed3 48.Kd3 b2 49.Kc2 b1Q 50.Kb1 Ke4 (50...Kd5 51.e4! Kd6+–) 51.a5! Ke3 (51...ba5 52.b6 Passed pawn) 52.a6 (52.ab6!? Kf3+–) 52...Kf3 53.a7 (53.a7 Ke4 54.a8Q Kd4 55.Qc8+–) 1–0. Fournier,Frederic (1650) – DeepPakete (1730), Active, 2005.

4.Nf3 Be6

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

5.c4 Be7 (---> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 Be7).

5.Be2 Be7 6.0-0 0-0 (--> 4.Nf3 Be7 5.Be2 0-0 6.0-0 Be6).

5.Be2 Be7 6.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 Be7 6.Be2).

4.h3 a6

5.Bc4 Be7 6.Nc3 (6.a3 0-0+=) 6...b5 (6...d5!? 7.Bd3 Bb4-+) 7.Bd5 Nd5 8.Nd5 Nc6 9.Qf3 Bd7 10.a3 0-0 11.Qg3 (11.Ne2 Bh4=) 11...h6 12.h4 (12.Nf3 a5+=) 12...Be6–/+ 13.Ne7 Qe7 14.f4 Bd7 (14...f6 15.Ne2+=) 15.Nf3 Qf6 (better is 15...f6+=) 16.fe5+/- de5 17.Be5 Ne5 18.Qe5 Qe5 19.Ne5 Be6 20.0-0-0 (20.Nc6 Rfe8+/-) 20...Rad8 (20...Rfe8 21.Rhg1+=) 21.g4 Rd5 22.d4 Re8 (22...f6 23.Ng6 Re8+/-) 23.Rdf1 (better is 23.g5!?+/-) 23...f6= 24.Ng6 Bg4 25.Nf4 Rd6 26.Rhg1 f5 27.Re1 Kh7 28.c3 Rc6 29.Kd2+= Rd6 30.e4+/- c6 31.e5 The passed pawn on e5 will quickly become a dangerous weapon 31...Rdd8 32.Nd3 g5 33.hg5+– hg5 34.e6 34...Kg7 35.Nc5 Ra8 36.e7 Ra7 37.Ne6 Kf6 (37...Kg6 38.Nd8 Rae7 39.Re7 Re7 40.Nc6+=) ½–½. Dessing,Bastiaan – Corporaal,Roelof, NED–ch U14 Rijswijk, 2000.

5.Qf3 Be6 6.Qb7?? Bd5-+ 7.Qa8 Ba8 8.Nf3 0–1. Heat – j11, Live Game Caissa's Web, 2004.

4.h3 Be6

5.d3 Nbd7 6.Nc3 c6 (6...d5 7.a3–/+) 7.Nge2 d5 8.d4 (8.a3 Bd6+=) 8...e4 (8...Bb4 9.a3 Ba5 10.de5-+) 9.Nf4 (9.a3 Bd6+=) 9...Qc7 (better is 9...Bb4!? 10.Ne6 fe6-+) 10.Ne6+= fe6 11.Ne2 (11.a3 Bd6+=) 11...Bd6 (better is 11...Bb4!? 12.c3 Bd6-+) 12.Qd2+= Nb6 13.Nf4 e5 (13...Na4!? 14.Bc1 Qe7–/+) 14.de5= Be5 15.c3 (15.Ne6 Qb8 16.c4= (16.Ng7? Kf7 17.c3 Kg7-+)) 15...Na4–/+ 16.Rd1 (16.Rb1!?–/+) 16...Nb2-+ 17.Qb2 Bf4 18.ef4 Qf4 19.Be2 0-0 20.0-0 Qg5 (20...b5 21.Qc2-+) 21.c4–/+ Rad8 22.cd5 cd5 23.f3 Nh5 24.fe4 Qe3 (24...de4?! 25.Bh5 Rd1 26.Rd1 (26.Bd1?? Qe3 27.Qf2 Rf2 28.Rf2 Qe1 29.Rf1 Qb4-+) 26...Qh5 27.Rd7 Rf1 28.Kf1 Qf5 29.Kg1 Qd7 30.Qe5+=) 25.Kh1? (better is 25.Kh2 Qg3 26.Kg1-+) 25...Ng3 26.Kh2 Qe2 (better is 26...Ne2 27.Qe5 Rf1 28.Rf1 Qe4 29.Qc7-+) 27.Qe2 Ne2 28.Rf8 Kf8 29.ed5 Nc3 30.Kg3 Rd5 31.Rf1 Ke7 32.Rf3 Ne4 33.Kf4 Nd2 34.Re3 Kd7 35.Re2 Nc4 0–1. Romsdal,Svein Erik – Svadberg,Anders, Barents Region–chC, 2004.

5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.Nf3 Nf6 5.h3).

4.b5 a6

5.a4 a5 6.Nf3= b6 (6...Be7 7.Be2=) 7.Be2 Bb7 (7...Be7 8.0-0=) 8.c4 e4 9.Nd4 c5 (9...d5 10.cd5 Qd5 11.Nc3+=) 10.Nf5 (10.bc6 Nc6 11.0-0 Rc8+=) 10...Qd7 (10...d5 11.0-0+=) 11.Ng3 d5 (11...Be7 12.0-0+=) 12.cd5 (12.Bf6 gf6 13.Bg4 Qe7+/-) 12...Qd5 (12...Nd5 13.Ne4 Ne3 14.fe3 Be4 15.0-0+=) 13.Nc3 (13.Bf6 gf6 14.Nc3 Qe5+/-) 13...Qe5 (13...Qd7 14.f3+=) 14.Qc2 Pawn e4, live or die! (14.f3+=) 14...h5 (better is 14...Qe6!?=) 15.Nce4+/- Ne4?? (better is 15...Be4 16.d3 Bd3 17.Bd3 Qg5+–) 16.Be5+– Ng3 17.hg3 Bg2 (17...Nd7 18.Bc3+–) 18.Rh5 (better is 18.Rh2!? Bd5 19.Bc4 Bb7+–) 18...Rh5 19.Bh5 Nd7 20.Bb2 (20.Bc7 Nf6 21.Qf5 Be7 22.Bb6 g6 23.Bg6 fg6 24.Qg6 Kd7 25.Qf5 Ke8+–) 20...g6 21.Bg6! fg6 22.Qg6 Kd8 23.0-0-0 (23.f3 Bf3 24.e4 Be7+–) 23...Rc8 (23...Bf3 24.Re1 Rc8 25.e4+–) 24.f4 (24.Rg1 Bf3+–) 24...c4 (24...Bf3 25.Rf1 Ba8 26.e4+–) 25.Bc3 (25.Bd4 Bc5+–) 25...Nc5 (25...Bf3 26.Re1+–) 26.Qf7 (26.Qb6 Kd7 27.Qf6 Bd5+–) 26...Nd7 27.Bf6 (27.d3 Bf3 28.Rd2 cd3 29.Rd3 Rc3 30.Rc3 Be4+–) 27...Nf6 28.Qf6 (better is 28.Qf8 Ne8 29.Qf7 Nd6+–) 28...Be7 (28...Kc7 29.d3 cd3 30.Rd3 Kb7 31.Kb2+–) 29.Qb6 Rc7 (29...Kd7 30.Qd4 Ke8 31.e4+–) 30.Qa5 1–0. GuestTCKV – GuestXTYW, freechess.org, 2017.

5.a4 c5 6.Be2 ab5 7.ab5 b6?? (better is 7...Ra1 8.Ba1 Bf5= 9.Nc3 Nbd7 10.Nf3 (10.Nh3 Be7 11.g4) 10...Be7 (10...d5 11.Nh4) 11.0-0 0-0) 8.Ra8+– Qc7 (8...Bb7 9.Bf3 Ba8 10.Ba8 Be7+–) 9.Nf3 Bb7 10.Ra7 Ne4 11.Bc4 g5 (11...Qc8+–) 12.Bd5! Bd5 13.Rc7 (13.Rc7 Be6 14.d3+–) 1–0. Anonymous – Anonymous, internet, 2011.

5.a4 Nbd7 6.d4 e4 7.d5 Ne5 8.Ne2 ab5 9.ab5 Ra1 10.Ba1 Bg4 11.h3 Bd7 12.Ng3 Qa8 13.Bd4 c6 14.c4 cd5 15.cd5 Nd5 16.Ne4 Qa5 17.Nec3 Be6 18.Be2 Ne7 19.f4 Nd7 20.0-0 Nf5 21.Bg4 h6 22.Bf5+/- Bf5 23.Nd5 Nc5 24.Nbc3 Qd8 25.b6 Na6 26.Qf3 Qd7 27.Ra1 Qc8 28.Nb5 Kd8 29.Ndc7 Nb4 30.Ra8 Qa8 31.Na8 (31.Na8 Nc6 32.Na7 Nd4 33.Qb7+–) 1–0. bambinik (2530) – freeze7 (2490), 2003.

5.a4 e4 6.d3 Bg4 (6...d5 7.de4 Ne4 8.Nf3=+) 7.Be2= ed3 8.Qd3 Be2 9.Ne2 d5 10.Bf6 gf6 (better 10...Qf6!? 11.Nbc3 c6=) 11.Nbc3+/- c6 12.bc6 bc6 13.e4 d4 (13...de4!? 14.Qe4 Qe7+/-) 14.Nd4+- c5 (14...Bb4 15.0-0+-) 15.Nf5 Qd4?? (15...Qd3 16.cd3 Nc6+-) 16.Nd4 (16.Nd4 cd4 17.Nd5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.ba6 ba6 6.c4 (6.d4 e4=) 6...Be6 (6...Nc6 7.Nc3+=) 7.d4 e4 (7...ed4 8.ed4 d5 9.c5+=) 8.Qb3 (8.d5 Bf5=) 8...Be7+= 9.Bc3 Nc6?? (9...Nbd7 10.Nd2+=) 10.Qb7?? (better is 10.d5 Bd7 11.dc6 Bc6 12.Nd2+–) 10...Na5?? (better is 10...Ra7 11.Qb3 d5+=) 11.Ba5+– Rb8 12.Qc6 Bd7 13.Qa6 (better is 13.Qc7 Qc7 14.Bc7 Rb7+–) 13...Bc8?? (better is 13...Ra8 14.Bc7 Ra6 15.Bd8 Bd8+–) 14.Qc6 Bd7 15.Qc7 Rc8 (15...Qc7 16.Bc7 Rb7 17.Ba5+–) 16.Qd8 Bd8 17.Bd8 Rd8 18.Nc3 0-0 (18...Ra8 19.Nge2 Ke7 20.Ng3+–) 19.Be2 (19.a4 Ra8+–) 19...Ra8 20.Bd1 Rfc8 21.Bb3 Re8 (21...Be6 22.d5 Rcb8 23.Rb1+–) 22.Nge2 Be6 (22...Reb8 23.Rc1 Rb4 24.Ng3+–) 23.0-0 (23.Ng3 Bd7+–) 23...h5 (23...Rec8 24.d5 Bf5 25.Nd4+–) 24.Ng3 h4 (24...Bd7 25.Bc2 Rac8 26.Nce4 Ne4 27.Ne4 Rc4 28.Bd3+–) 25.Nge4 Bf5 (25...Ne4 26.Ne4 Ra6+–) 26.Nd6 Bd3 27.Rfd1 (27.Ne8 Re8 28.Rfc1 Kf8+–) 27...Re6 (27...Reb8 28.e4 Ra6 29.e5+–) 28.c5 (better is 28.Ndb5 Bf5 29.Nc7 Rc8 30.Ne6 Be6+–) 28...Bh7 (28...Rd6 29.cd6 Bg6 30.a4+–) 29.Be6 fe6 30.Rd2 (30.a4 Kf8+–) 30...Ra3 31.Ncb5 g5 32.Na3 g4 33.c6 Bg6 34.c7 Kh7 35.c8Q g3 36.hg3 (better is 36.Qe6 gh2 37.Kh2 Nh5 38.Qe7 Ng7 39.Qh4 Kg8+–) 36...h3 37.gh3 Kh6 38.Qe6 Kg5 (38...Kg7 39.Qe7 Bf7 40.Qf7 Kh8 41.Qg6 Nd5 42.Nf7) 39.Nf7 Bf7 40.Qf7 Kf5 (40...Kh6 41.Qf6 Kh7 42.Rb1 Kg8 43.Rb8 Kh7 44.Rh8) 41.f3 (41.g4 Kg5 42.Qg7 Kh4 43.Qh6 Nh5 44.Qh5) 41...Kg5 42.Rc1 Nd5 (42...Kh6 43.Qf6 Kh7 44.Rc7 Kg8 45.Qd8) 43.Qd5 (43.h4 Kh6 44.Rc6 Nf6 45.Rf6) 43...Kf6 44.Rc6 1–0. Tago,Shunnichi – Magill,Ray, WS/O/226 ICCF, 2008.

5.c4 Be7 6.Be2 0-0 7.Qc2 c5 8.a4 a5 (8...Re8!?=+) 9.Nf3 Nbd7 10.Nc3 b6 11.Ng5 h6 12.h4 (12.Nge4 Bb7 13.Nf6 Bf6+=) 12...Bb7 (< 12...hg5 13.hg5 Bb7 14.gf6 Nf6 15.Qf5+/-) 13.Rh2 Re8 (< 13...hg5 14.hg5 g6 15.gf6 Bf6 16.0-0-0+/-) 14.Bh5?? ( 14.Bf3 Ra7 15.Bb7 Rb7 16.Nf3=) 14...hg5-+ 15.hg5 Nh5 16.Rh5 g6 17.Rh2 Bg5 18.0-0-0 Qf6 19.d3 Qg7 20.Ne4 Be4 (20...Be7!? 21.Rdh1-+) 21.de4 Be7 22.f4 f6 (22...Rad8!? 23.Kb1-+) 23.Rdh1–/+ Nf8 24.Qd1 Qf7 25.Qe2 Ra7 26.Rh8 Kg7 27.g4 Bd8 28.f5 g5 (28...Rae7+–) 29.Qh2 Qc4 30.Kd2 Qe4 (30...Qg8 31.Qh6 Kf7 32.Qh5 Kg7 33.Qe8 Qh8 34.Rh8 Rf7+–) 1–0. Otte,Marco – de Leeuw,G, Wag.Ext.4vsDodewaard2, 1999.

5.Nf3 Be7 +=.

5.a4 ab5 6.ab5 Ra1

7.Ba1 Bd7 8.c4 Be7 9.Nf3 0-0 10.Be2 h6 (10...c6 11.Nc3=) 11.0-0 c6 12.Nc3 cb5 13.cb5 b6 (13...Bg4 14.d4 e4 15.Nd2 Be2 16.Qe2=) 14.d3 (14.e4 d5 15.Nd5 Nd5 16.ed5 e4+/-) 14...Be6 (14...Qe8 15.Qc2=) 15.e4+= Nbd7 16.d4 ed4 17.Nd4 Ne5? (17...Nc5 18.Nc6 Qc7 19.Qd4+=) 18.Ne6 (better is 18.f4!? Bc8 19.fe5 de5 20.Nc6 Bc5 21.Kh1 Qd1 22.Bd1+–) 18...fe6+/- 19.Qb3 Qc8 20.Bb2 (20.Na4 Kf7 21.f4+–) 20...d5? (better is 20...Bd8!?+/-) 21.ed5 ed5 22.Nd5 (22.Nd5 Nd5 23.Qd5 Nf7 24.Qe4+–) 1–0. GuestVGRH – GuestDPCT, freechess.org, 2017.

7.Ba1 Bd7 8.Nf3 c6 9.c4 Qb6 10.Ne5 (better 10.Nc3=) 10...cb5?? (better 10...de5 11.Be5 Qd8–/+) 11.Bd4 (11.Nd7 Nbd7 12.cb5 d5+–) 11...Qc7 12.Nd7 Nbd7 13.cb5 Nc5? (13...d5 14.Be2+–) 14.Nc3 (14.Bf6!? gf6 15.Nc3 Qa5+–) 14...Be7 15.Bc4 (15.Bf6 Bf6 16.Nd5 Qd8+–) 15...0-0 (15...Ne6 16.Qb3 Qd7 17.Bf6 Bf6 18.Nd5+–) 16.Bf6 Bf6 17.Nd5 Qd8 18.0-0 Re8 (18...Nd7 19.d4+–) 19.d4 Ne4 (19...Nd7 20.Qf3+–) 20.f3 (20.Bd3 Bg5+–) 20...Ng5 21.Qd3 Ne6 22.b6 Bg5 (22...Bh4+–) 23.Bb5 Rf8 (23...Re7 24.Rc1+– (worse 24.Ne7 Be7 25.Bc4 Qd7+–)) 24.f4 Bf6 (24...Bh6 25.f5+–) 25.f5 Ng5 26.h4 Ne4 (26...Ne6 27.fe6 fe6 28.Nc7+–) 27.Qe4 1–0. GuestFFHS – GuestCTRT, freechess.org, 2020.

7.Ba1 Bd7 8.Nf3 c6 9.c4 Be7 10.d4 ed4 (10...e4 11.bc6 bc6 12.Nfd2=) 11.Bd4 cb5 12.cb5 Bc6?? (better 12...Be6+=) 13.bc6+- bc6 14.Bd3 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Ba1 Nbd7 8.Be2 Nb6 (8...d5 9.Nf3 Bd6 10.0-0+=) 9.Nf3= Be7 10.c4 (10.Nc3 0-0=) 10...0-0 11.0-0 Be6 12.d3 Qa8 (12...Qd7 13.Nbd2=) 13.Nc3 (13.Nbd2 Qa2=) 13...h6 (13...Qc8 14.c5 Nbd5 15.Qc2=) 14.Bb2 Rd8 (14...Qc8 15.Qc2+=) 15.Qc2+= Bf5 (15...Qc8 16.Ra1+=) 16.Ra1 Qc8 17.e4 Bg6 (17...Bg4 18.h3 Bh5 19.Bc1+=) 18.h3 (18.Bc1 c5+=) 18...Nbd7 19.Nh4 (19.Bc1 c6+=) 19...Bh7= 20.Rf1 (20.g3 c6=) 20...Ne4+= 21.Nf3 (21.Ne4 Bh4 22.Ra1 Nf6+=) 21...Nec5 (21...Nc3 22.Qc3 Bf6 23.d4–/+) 22.Qd1 (22.Nd5 Re8–/+) 22...Bf6 (22...Nb6 23.d4 ed4 24.Nd4–/+) 23.Nd5+= c6 (23...Re8 24.Re1–/+) 24.Nf6 Nf6 25.bc6 (25.Re1 cb5 26.cb5 Ne6+=) 25...bc6–/+ 26.Nh2 (26.d4 Ne6–/+) 26...Qe6 Black plans e4 (26...Qb7 27.Ba1–/+) 27.Ng4 (27.d4 Ncd7–/+) 27...Ng4-+ 28.Bg4 f5 (28...Qf6!? 29.Be2 Rb8–/+) 29.Bf3–/+ e4 30.de4 fe4 31.Re1 (31.Qd4 Qe7 32.Bg4 Nd3–/+) 31...d5 (better is 31...Qc4!? 32.Be2 Qf7-+) 32.Qd4+= Qe7 33.cd5 (33.Bg4 Na4 34.Ba1 c5+=) 33...Rd5–/+ (worse is 33...cd5 34.Bg4 h5 35.Bh5=) 34.Qc3 Qf7 (better is 34...Qf6 35.Qc1 Nd3 36.Bf6 Nc1–/+) 35.Bh5?? (35.Be2!?=) 35...Bg6 (better is 35...Rh5 36.Ra1 Bg6-+) 36.Bg6 (36.Be2!? Bh5 37.Bc4+=) 36...Qg6–/+ 37.Re3 (37.Ra1 Rg5 38.Kf1 Ne6–/+) 37...Nd3-+ 38.Rg3 Rg5 39.Rg5 (39.Qc4 Kh8 40.Rg5 Qg5-+ (40...hg5?! 41.Bd4–/+)) 39...hg5 (39...Qg5 40.Kf1-+) 40.Qc4–/+ Kh7 (40...Qf7 41.Qf7 Kf7 42.Bc3–/+) 41.Bd4 Qd6 (41...g4 42.hg4 Qg4 43.f3 ef3 44.Qd3 g6 45.g3 Qg3 46.Kf1 Qg2 47.Ke1 Qe2 48.Qe2 fe2 49.Ke2=) 42.Be3 (42.Qf7 Qh6+=) 42...Qd5–/+ 43.Qc3 (43.Qa4 g4 44.hg4 Ne5–/+) 43...Nf4 (better is 43...c5–/+) 44.Qb2?? (better is 44.Qc2–/+) 44...Qd1-+ 45.Kh2 Ne2 (45...Ne2 46.f3 g4 47.fg4 Qd6 48.Kh1 Ng3 49.Kh2 Nf1 50.Kg1 Ne3-+) 0–1. GuestCVDK – GuestSZVC, freechess.org, 2016.

7.Ba1 Nbd7 8.Nf3 Nc5 9.d4= ed4 10.ed4 Nce4 11.Bd3 d5 12.0-0 Be7 13.Ne5 0-0 14.Qe2 Bf5 15.f3 Nd6 16.Bb2 (16.Nc3 Bd3 17.Qd3 Re8=) 16...Re8 (16...Bd3 17.Qd3 Nd7 18.Na3=+) 17.Bf5 (17.Nc3 g6+=) 17...Nf5= 18.Qd3 g6 19.c4 (19.g4 Ng7=) 19...Bf8 (19...Bd6 20.Nd2–/+) 20.g4= Nh4 (20...Ng7 21.Nd2=) 21.Nc3 Bd6 (21...Bb4 22.Ra1 h5 23.Rf1=) 22.cd5 (better 22.f4 Bb4 23.Ra1=) 22...Be5?? (better 22...Bb4=) 23.de5+– Re5 (23...Nd7 24.f4 Qe7 25.Qd4+–) 24.Ne4 Rd5?? (24...Nf3 25.Qf3 Re4 26.Bf6 Qd5+–) 25.Nf6 Qf6 26.Bf6 Rd3 1–0. DEFFM – GuestNLZZ, freechess.org, 2020.

7.Ba1 Nbd7 8.Nf3= c6 9.c4 (9.Be2 Be7=) 9...g6 (9...Be7 10.Be2=) 10.Nc3 Bg7 11.Qc2 (11.d4 ed4 12.Nd4 Qb6+=) 11...0-0 (11...Nc5 12.d4 Bf5 13.Qd1=) 12.Bd3 (12.Be2 Re8=) 12...Re8 13.Ne4 (13.0-0!?=) 13...Ne4–/+ 14.Be4 f5 (better is 14...cb5 15.cb5 Nf6–/+) 15.bc6+= fe4 16.cd7 Bd7 17.Qe4 Bc6 18.Qg4 Rf8 (18...Qc8 19.Qc8 Rc8 20.Ke2=) 19.0-0+= Bf3 (19...Qc8 20.Qc8 Rc8 21.d3=) 20.gf3 Qf6 (20...Qc7 21.Rb1+=) 21.f4+/- h5 (21...Qe7 22.fe5 de5 23.d3+/-) 22.Qg5 (22.Qg2 Qe6+/-) 22...Qf5 (22...Qg5 23.fg5 Rf5 24.h4+/-) 23.Qf5 Rf5 (23...gf5 24.fe5 de5 25.d4+/-) 24.fe5 de5 25.Kg2 (25.Rb1 Rf7+–) 25...g5 (25...e4!? 26.Bg7 Kg7+/-) 26.Rb1+– Rf7 27.d4 (27.Rb5!? Re7+–) 27...ed4+/- 28.Bd4 Rc7 (28...Kh7 29.Rb5 Kg6 30.Bg7 Rg7 31.f4 gf4 32.ef4+–) 29.c5+– Rd7 30.Rb6 (30.h4 gh4 31.Bg7 Rg7 32.Kh3 Rg5+–) 30...Bd4+/- 31.ed4 Rd4 32.Rg6 Kf7 33.Rg5 h4 The passed pawn on f2 quickly leads to threats 34.Rh5 (34.Kf3 Ke6+/-) 34...Rc4 (34...Kg6 35.Rh8+/-) 35.Rh7 Kf6 36.Rb7 Rc5 37.Rb4 (37.f4 Rc2 38.Kh3 Rf2 39.Kh4 Rh2 40.Kg4 Rg2 41.Kf3 Rg1+/-) 37...Kg5 38.h3 Rd5 39.Rg4 Kh5 40.Rg8 Rc5 (better is 40...Rd2+/-) 41.Kf3 (better is 41.f4+–) 41...Rc3= 42.Kg2 Rb3 (42...Rc5 43.f4 Rc2 44.Kf1 Rc4 45.Rh8 Kg6 46.Rh4 Kf5 47.Rh5 Kf6 48.Rh6 Kf5+/-) 43.f3 (43.f4 Rb2 44.Kg1 Rb1 45.Kf2 Rb2 46.Ke1 Rb1 47.Kd2 Rb2 48.Kd1 Rf2 49.Rh8 Kg6 50.Rh4 Kf5+/-) 43...Rb2+/- 44.Kf1 (44.Kg1 Rb1 45.Kf2 Rb3+/-) 44...Ra2 (44...Rh2 45.Rh8 Kg5 46.f4 Kf4 47.Rh4 Kg3 48.Rh8=) 45.Re8 (better is 45.f4+/-) 45...Rh2= 46.Re5 Kg6 47.Re6 Kf5 48.Rh6 Rh3 49.Kg2 Rg3 50.Kf2 Kg5 51.Rh8 Rh3 52.Rg8 Kh5 53.Rh8 Kg6 54.Rg8 Kf6 55.Rg4 Kf5 56.Rg8 Rh2 57.Kg1 Rb2 58.Rf8 (58.Rg4 h3=) 58...Kg5 (58...Ke5 59.f4 Ke4 60.f5+=) 59.Rg8 (59.f4 Kg4 60.f5 h3+=) 59...Kf4 60.Rf8 (60.Rg2!? Rb3 61.Rf2+=) 60...Kg3–/+ Threatening mate... how? 61.Rg8 Kf3 62.Rf8 (62.Kh1 Kf4-+) 62...Kg3-+ 63.Rg8 Kh3 64.Kf1? (better is 64.Rf8-+) 64...Rb1 (64...Kh2 65.Rf8 Rg2 66.Rh8-+) 65.Kf2 Kh2 66.Rh8 (66.Rg2 Kh1 67.Rg4 h3-+) 66...h3 67.Rg8 Kh1 68.Rg3 The mate threat is Rxh3 68...h2?? (68...Rb2 69.Kf3 h2 70.Rg7 Rb3 71.Kf2-+) 69.Rg8?? (69.Rd3 Rg1=) 69...Rb2?? (69...Rd1 70.Rc8 Rg1=) 70.Ke3?? (better is 70.Kf3=) 70...Rg2?? (70...Rg2 71.Rb8 Rg4+=; better is 70...Ra2-+). Bini,Gabriele – Trm04, Canarias en Red prel 1st blitz, 2004.

7.Ba1 Nbd7 8.Nf3 Be7=.

7.Ba1 Be6 8.Nf3 h6 9.Be2 Nbd7 10.0-0 Be7 11.d4 e4 12.Nfd2 d5 13.c4 0-0 14.cd5 Bd5 15.Nc3 c6 16.Qa4 (16.bc6 Bc6 17.Qc2 Bd6=) 16...Qa8 (16...Bd6 17.Rc1=) 17.Qc2+= e4 becomes the focus of attention 17...Bb4 (17...Rc8!?+=) 18.Nde4+/- Ne4 19.Ne4 cb5 20.Bb5 b6 21.f3 Rc8? (21...Nb8 22.Ng3+/-) 22.Qf2?? (better 22.Qb1 Bc4 23.Bd7+- (23.Qb4?! Bf1 24.Bd7 Rc2+-)) 22...Nf8+/- 23.Bb2 Qa5 24.Bd3 Qa4 25.Qg3 Qb3 (25...Rc6!? 26.Nf2 Qb3+/-) 26.Nf6+- Kh8 27.Nd5 Qb2 (better 27...Qd5 28.Be4 Qb3+/-) 28.Nb6 Rc1 29.Nc4 Rf1 30.Bf1 Qc3 31.d5 Bc5 32.Qf4 Ng6 33.Qe4 (33.Qf7?! Be3 34.Kh1 Bc5 35.Qe8 Kh7+/-) 33...f5 (33...Qf6+-) 34.Qe8 (better 34.Qe6 Qf6 35.Qc8 Qf8 36.Qc6+-) 34...Kh7+/- 35.d6 Ne5?? (35...f4 36.Qb5 Be3 37.Ne3 Qe3 38.Kh1 Ne5+-) 36.Qe5 (36.Qe5 Qe5 37.Ne5 Bd6 38.Nd7+-; 36.Ne5?? Qe3 37.Kh1 Qg1) 1-0. onur604 (2320) - Patrick1-0 (2305), Casual Rapid game, lichess.org, 2021.

7.Ba1 Bf5 8.Nf3 Nbd7 9.Bb2=+.

7.Ba1 Bf5 8.Nf3 Nbd7 9.d4 e4 10.Nfd2 d5 11.c4 c6 (11...dc4 12.Bc4 Bd6 13.Nc3=+) 12.Be2= Qa5 13.Nc3 (13.Bc3 Qa2=) 13...Bb4=+ 14.Qc1 (14.bc6 bc6 (worse 14...Bc3 15.Bc3 Qc3 16.cd7 Bd7 17.0-0=) 15.Qc1 0-0=) 14...0-0 (14...cb5 15.c5 Bc3 16.Bc3=+) 15.0-0 Ra8 16.bc6 bc6 17.Qc2 Qc7 18.Rb1 Bd6 19.g3 Bg4 (better 19...h5!?=) 20.Bg4+/- Ng4 21.cd5 cd5 22.Qb3 Ndf6 23.Nd5 Nd5? (better 23...Qa5 24.Nf6 Nf6+/-) 24.Qd5+- (24.Qd5 Rb8 25.Rb8 Qb8 26.Kg2+- (26.Ne4?! Qb1 27.Kg2 Qc2 28.Qa8 Bf8+=)) 1-0. DEFFM – GuestQMNH, freechess.org, 2021.

7.Ba1 Bf5 8.Nf3 Be7 9.Be2= 0-0 10.0-0 Nbd7 11.d4 e4 12.Nfd2 Qa8 (12...d5 13.c4=) 13.Bb2 (13.Nc3 d5=) 13...Nb6 14.c4 Na4 (14...Qa2 15.Bc3=) 15.Ba1 c6 16.Qb3 Nc5 17.Qc3 Na4 (17...Ne6 18.Na3=) 18.Qb4 c5 19.Qb3 cd4 20.Bd4 Rc8 21.Nc3 Nc5 (21...Nc3 22.Qc3 d5 23.c5+=) 22.Qc2 e4 becomes the focus of attention 22...h6 (22...Kh8 23.Rd1+–) 23.Bf6+– Bf6 24.Nce4 Be5 (24...Kh8 25.Bd3 Nd3 26.Nf6 gf6 27.e4 Nf2 28.ef5+–) 25.Nf6!+– Bf6 (25...Bf6 26.Qf5 Discovered attack; 25...gf6 26.Qf5 Discovered attack) 26.Qf5 Re8 27.Bd3 Kf8 28.Ne4 Ne4 (28...Be5 29.Nc5 dc5 30.Be4+–) 29.Be4 Qc8 30.Qc8 (30.Qd5 Re7+–) 30...Rc8 31.Bb7 Rc4 32.Rb1 Bb2 33.Kf1 Rb4 34.Bc6 d5 35.Ke2 Ke7 36.Kd3 Kd6 37.g3 f6 38.Kc2 Bc3 39.Rd1 (39.Kc3 Rb1 40.h4 Rf1–/+) 39...d4 40.Kd3 Bb2 (40...f5 41.h4+–) 41.Ke4+– Kc5 42.Kf5 de3 43.fe3 Rc4 (43...Be5!?+–) 44.Rd7+– Rc2 45.h4 (worse 45.Rg7 Rh2 46.e4 h5+–) 45...Re2 (45...Rc3 46.Re7+–) 46.e4 g5 47.Kg6 (47.h5 Be5+–) 47...Be5 48.Kh6 Bg3 49.h5 g4 50.Kg7 Be5 51.h6 g3 52.h7 g2 53.Kf7 (53.Rd1 Re3+–) 53...g1Q 54.h8Q Kc4 55.Qf8 Qc5 56.Bd5 Kb4 57.b6 Qf8 58.Kf8 Rb2 59.b7 Ka5 60.Rd8 Rb6 61.Ra8 Kb5 62.Kf7 Kc5 63.Kg6 Kb5 64.Rc8 Ka5 65.Kf5 (65.Re8 Bf4+–) 65...Kb5 66.Re8 Bc7 67.Rc8 Be5 68.Kg4 Bd6 69.Kf3 Be5 70.Ke3 Bh2 71.Bc4 (better 71.Ra8!?+–) 71...Kb4+– 72.Bd5 Kb5 73.Kd3 Bg3 74.Bc4 Kb4 75.Bd5 Kb5 76.Bc4 Kb4 77.Bd5?? (better 77.Rg8 Be5 78.Bd5+–) 77…Kb5= ½–½. onur604 (2320) – dark_exodus (1975), lichess.org, 2020.

7.Ba1 c6

8.c4 cb5 9.cb5 Bd7 10.Nf3 Qa5 The isolani on b5 becomes a target 11.Nc3 Bg4 12.Be2 e4 13.Nd4 Be2 14.Nce2 Be7 15.Nf5 Qb5 16.Ne7 (16.Ned4 Qd7 17.Ng7 Kf8+=) 16...Ke7= 17.Bf6 Kf6 18.0-0 Rc8 (18...Kg6 19.f3+=) 19.Nc3+– Qc6 20.Qg4 g6 (20...Ke7 21.Ne4 Nd7 22.Qh4 Ke8 23.Qh7+–) 21.Ne4+– Kg7 22.Nd6! Rd8 (22...Qd6 Theme: Deflection from c8 23.Qc8) 23.Nf5 Kf8?? (better 23...Kh8 24.Qh4 Qb6+– (24...Rd2?? 25.Qh6 Qg2 26.Kg2 Rf2 27.Rf2 gf5 28.Qf8)) 24.Qb4 (24.Qb4 Rd6 25.Nd6+–) 1–0. DEFFM – Jozek, freechess.org, 2020.

8.c4 Bd7 9.Nc3 Qa5 10.Nf3 cb5 11.cb5 b6 12.Be2 Be7 13.0-0 0-0 14.d4 e4 15.Nd2 d5 16.Qb3 Qa7 (16...Rc8 17.Bb2=) 17.Bb2 (better 17.Nd5!? Bf5 18.f3 Nd5 19.Qd5+-) 17...Qb7 18.Rc1 Be6 19.h3 Rc8 20.Rc2 h6 21.Na4 (21.Ba3 Kh7=) 21...Nbd7 22.Rc3 Rc3 23.Bc3 Qc7 24.Nf1 g6 (24...Qd6 25.Nd2=) 25.Bb4 Bb4 26.Qb4 Kg7 27.Nc3 h5 28.Ng3 Ne8 29.Bf1 Nd6 30.Nge2 Nc4 (better 30...g5!?=) 31.Nf4+/- Nd2 32.Ncd5?? (better 32.Be2 Nf6 33.Qb2+=) 32...Qc1-+ 33.Ne6 fe6 34.Qe7 Kh6 35.Nf4 (35.h4 Qf1 (35...Nf1?! 36.Qg5 Kg7 37.Qe7 Kh6 38.Qg5 Kh7 39.Qe7 Kh6= ; 35...ed5?! 36.Qg5 Kg7 37.Qe7 Kg8 38.Qd7 Qf1 39.Kh2-+) 36.Kh2 Qf2-+ (36...ed5 37.Qg5 Kg7 38.Qe7 Kg8 39.Qd7 Qf2 40.Qd5 Kg7 41.Qd7 Qf7 42.Qf7 Kf7 43.Kg3-+)) 35...Qf1 36.Kh2 Nf3! (36...Qb5?? 37.Ne6 Nf1 38.Kg1 Qe5 39.de5 Ne5 40.Qg7) 37.gf3 ef3?? (better 37...Qf2 38.Kh1 e5=) 38.Kg3+- (38.Qd7 Qf2 39.Kh1 Qe1 40.Kh2 f2 41.Ne2 f1Q 42.Qh7 Kh7 43.d5 Qfe2) 38...Qg1 (38...e5 39.de5 Qg1 (39...Qb5?? 40.Qe8 h4 41.Kh2+-) 40.Kf3 Nc5 41.Qf8 Kh7 42.Qf7 Kh6+-) 39.Kf3 Qg5 (39...Ne5 40.de5 Qh1 41.Ke2+-) 40.Qd7 h4 (40...Qf6 41.Qe6 Qe6 42.Ne6+-) 41.Qg7! Kg7 42.Ne6 Kf6 43.Ng5 Kg5 44.e4 (44.Ke4!? Kf6+-) 44...Kf6 45.Kg4 g5 46.e5 Kg6 47.d5 Kf7 48.Kg5 Ke7 49.Kf5 Kd7 50.Kf6 Ke8 (50...Kd8 51.e6 Kc7 52.Ke7 Kc8 53.d6 Kb8 54.Kd7 Kb7 55.e7 Kb8 56.Kc6 Ka7 57.Kc7 Ka8 58.e8Q Ka7 59.Qb8) 51.Ke6 (51.e6 Kd8 52.d6 Kc8 53.Ke7 Kb7 54.Kd7 Kb8 55.Kc6 Kc8 56.e7 Kb8 57.Kb6 Kc8 58.e8Q) 51...Kf8 52.d6 Kg7 53.d7 Kg6 (53...Kh6 54.d8Q Kg6 55.Qg8 Kh6 56.f4 Kh5 57.Qg5) 54.d8Q Kh5 (54...Kh6 55.Kf6 Kh7 56.f4 Kh6 57.Qh8) 55.Qe7 (55.Kf6 Kh6 56.Qh8) 55...Kh6 (55...Kg6 56.f4 Kh6 57.Kf7 Kh5 58.Qg5) 56.Qf8 (56.Kf6 Kh5 57.Qh7) 56...Kh5 (56...Kh7 57.f4 Kg6 58.Qg8 Kh6 59.f5 Kh5 60.Qg6) 57.Qg8 Kh6 58.Kf6 (58.Kf6 Kh5 59.Qg6; 58.f4 Kh5 59.Qg5) 1-0. BeepBeepImAJeep (2635) - 2weakness (2020), lichess.org, 2016.

8.c4 Be7 9.Be2 Be6 (9...0-0 10.d4 e4 11.Qb3=+) 10.Nf3= 0-0 11.Nc3 Nfd7 12.0-0 f5 (12...d5 13.d4 e4 14.Nd2=) 13.Bb2 (13.d4 e4 14.Nd2 Nf6+=) 13...Bf6 (13...d5 14.cd5 cd5 15.Qb3+=) 14.d4 e4 (14...Nb6 15.Qb3=) 15.Nd2+= d5 (15...Qc7 16.Qc2+=) 16.Qb3 dc4 17.Bc4 Bc4 (better 17...Bf7!?+=) 18.Nc4+– (18.Qc4?! Rf7+=) 18...Kh8 19.Nd6 c5 (19...g6 20.bc6 Nc6 21.Nf7 Rf7 22.Qf7+–) 20.Nf7 Rf7 21.Qf7 cd4 22.ed4 1–0. onur604 (2320) – Tsavan (2020), lichess.org, 2020.

8.Be2 Be7 9.Nc3 0-0 10.Nf3 Bf5 11.0-0 Nbd7 12.Bd3 e4 (12...Bd3 13.cd3 d5 14.d4+=) 13.Nd4= Bh3?? (better is 13...Bg4 14.f3 Bf3 15.gf3 ed3 16.bc6 bc6 17.Nc6 dc2 18.Qc2 Qe8=) 14.Ne4+– (14.gh3?! ed3 15.bc6 bc6 16.Nc6 dc2 17.Qc2 Qe8+=) 14...Bg4 15.f3 Bh5 16.bc6 bc6 17.Nc6 Qe8 18.Qb1 Ne5 (18...Ne4 19.Be4 f5 20.Bd5 Bf7 21.Qb5+–) 19.Ne5 de5 20.Be5 Ne4 21.fe4 Bc5 22.Bd4 Qc6 (22...Bd4 23.ed4 Bg6+–) 23.Bc5 Qc5 24.Rf5 (24.Rf5 Qd6 25.Rh5+–) 1–0. usingprogram – manfild, internet, 2011.

8.Nf3 Be7 9.Be2 0-0 10.0-0 Bg4 11.c4 e4 12.Nd4 Qd7 (12...Be2 13.Qe2 d5 14.f3=) 13.f3+= Bh5 (13...ef3!? 14.Bf3 Be6+=) 14.fe4+/- Be2 15.Qe2 Ne4 16.d3 Nc5 17.e4 Bf6?? (better 17...cb5 18.Nf5 f6+/-) 18.Rf6!+- gf6 (18...cb5 19.Nb5 Ne6+-) 19.Nf5 (19.Nf5 Qf5 20.ef5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.Ba1 Be7

8.c4 0-0 9.Nf3 Bg4 10.Be2 c6 (10...e4 11.Nd4 Be2 12.Qe2=) 11.h3 (11.Nc3 Nbd7=) 11...Bf5 (11...Bf3 12.Bf3 e4 13.Be2=) 12.0-0 (12.Nc3 Nbd7=) 12...Nbd7 (12...cb5 13.cb5 Qb6 14.Na3=) 13.d4 (13.Nc3 Qc7=) 13...Qc7 (13...e4 14.Nfd2+=) 14.Nc3 h6 15.Bb2 Ra8 (15...e4 16.Nd2=) 16.Qb3 ed4 (16...c5 17.Ra1 Ra1 18.Ba1 cd4 19.ed4=) 17.ed4+= Ne4 (17...Be6 18.d5 Nc5 19.Qd1 cd5 20.cd5+=) 18.Ne4 Be4 19.Nd2 Bf5 20.Ra1 Re8 (20...Ra1 21.Ba1 Bg5 22.bc6 bc6 23.Qf3=) 21.Bd3 (21.Re1 Bg5 22.Nf3 Bf6=) 21...Bd3= 22.Qd3 Bf6 (22...cb5 23.cb5 d5 24.Ba3=) 23.Ne4 (23.Bc3 cb5 24.cb5 d5=) 23...d5 24.cd5 cd5 25.Nf6 (25.Nc3 Nb6 26.Ba3 Qc4 27.Qc4 dc4=) 25...Nf6 26.Rc1 (26.Ba3 Qf4=) 26...Qa5 (26...Qf4 27.g3 Qd6 28.Kg2+=) 27.Bc3= Qb6 (27...Qa3 28.Qb1=) 28.f3 (28.Bb4 Nh5 29.Bd2 Qf6=) 28...Ra8 (28...Nh5 29.Bd2=) 29.Bb4 (29.Bd2 Ne8=) 29...Nd7 (29...Nh5 30.Bd2=) 30.Bc5 (30.Re1 Qf6=) 30...Qe6 31.Bb4 (31.f4 Qf6 32.Qe3 Qg6=) 31...Nf6 (31...Qf6 32.Re1=) 32.Re1 Qc8 33.Bd2 (33.Be7 Nd7=) 33...Qf8 (33...Qc4 34.Qc4 dc4 35.Rc1+=) 34.Rc1 Qd8 35.Qb3 (35.Qf5 Qe8=) 35...Qb6 36.Qb2 (36.Qb4 Qe6=) 36...Nd7 37.Qb4 (better is 37.Re1=) 37...Qa7 (37...Re8 38.Bf4=) 38.Bf4 (38.Rc7 Ne5 39.Bc3 Ng6+=) 38...Nf6 (38...Re8 39.Kh2=) 39.Rc7 Qb6 (39...Nh5 40.Be5 f6 41.Bd6 Qa1 42.Kh2+/-) 40.Rc1 (better is 40.Qc5 Qe6 41.Rb7 Ra1 42.Kh2+/-) 40...Qe6= 41.Re1 0–1. Huelle,Gunter (1720) – Hoelting,Siegfried (1910), 4th Erfurt Germany, Christmas Open, 2014.

8.Be2+=.

8.Nf3 0-0 9.Be2 c6 10.c4 (10.0-0 Bf5 11.Nc3 Nbd7 12.Ne1 Qa5 13.Nf3 Ra8 14.Nh4 Be6+=) 10...Bf5 (10...e4 11.Nd4 d5 12.d3 Bb4 13.Bc3 Bc3 14.Nc3 Qa5=) 11.0-0 (11.Nc3 Nbd7 12.0-0 Qb6 13.d4 Re8 14.c5 Qc7=) 11...Nbd7 (11...cb5 12.cb5 Qb6 13.Na3 Be6 14.Nc4 Qc7=) 12.Nc3 h6 (12...Qc7 13.Bb2 d5 14.d4 e4=) 13.Bb2 (13.d4 Qc7 14.Nh4 Be6=) 13...Qc7 14.d3 (14.Nh4 Be6=) 14...d5 15.cd5 cd5 16.Qa1 Bd6 17.Rc1 Qb8 18.Ba3 Rc8 19.h3 Nb6 20.Bb2 Nfd7 21.e4 de4 22.Ne4 Rc1 23.Bc1 Be7 24.Bb2 f6 25.Qa2 Kf8 26.Nh4 Bh7?? (better is 26...Be4 27.de4 Qe8+/-) 27.Bh5+– (27.Bh5 g6 28.Ng6 Kg7 29.Ne7+–) 1–0. Bach,Mat (2275) – Schalla,D (2090), 14th OIBM Bad Wiessee GER, 2010.

8.Nf3 0-0 9.Be2 Qe8 10.d4 ed4 (10...e4 11.Nfd2=) 11.Bd4 c5 (11...Nbd7 12.0-0=) 12.Bf6+= gf6 13.Nc3 f5 14.Nd5 Be6 15.c4 Nd7 16.0-0 Nf6 (16...Qd8 17.Qc2+=) 17.Nf6+/- Bf6 18.Qd6 Qe7 19.Qg3 Kh8 20.Rd1 Rg8 21.Qf4 Rg4 22.Qb8 Rg8 23.Qf4 Rg4 24.Qb8 Rg8 25.Qa7 h5 (25...f4!? 26.Kf1 fe3 27.fe3 Bf5=) 26.Nd2+/- Be5 27.Nb3 Bd6 (better 27...Qc7 28.Qc5 Bh2 29.Kh1 b6 30.Qd4 Be5+-) 28.Qb6 h4 (28...Bc7 29.Qc5 Re8+-) 29.Rd6 Qd6 (29...Qg5 30.Bf3 Bc4 31.Nc5 Ra8+-) 30.Qd6 1-0. onur604 (2320) - kulje (2220), Casual Rapid game, lichess.org, 2021.

8.Nf3 Bg4 9.Be2 0-0 10.h3 Bh5 (10...Bf5 11.0-0=) 11.g4 (11.0-0 Re8=) 11...Bg6=+ 12.0-0 Qd7 (12...Nd5 13.c4 Nb4 14.Qb3=) 13.Nh4= c6 (13...Be4 14.Nc3=) 14.f4 Nd5 (14...ef4!? 15.Rf4 d5=) 15.Ng6+– fg6 16.fe5 (16.Bc4 e4 17.Nc3 Kh8 18.Nd5 cd5 19.Bd5 Qb5+–) 16...Rf1 (16...cb5 17.c4 Rf1 18.Bf1+–) 17.Qf1 cb5 (better 17...Nb6+–) 18.Bb5+– Qe6 (18...Nc6 19.Bc4 de5 20.Nc3+–) 19.Bc4 b5 (19...Kh8 20.Qf3 de5 21.Bd5+–) 20.Bb3 1–0. onur604 (2320) – RookieBoogie (2040), lichess.org, 2020.

8.Nf3 Bg4 9.Be2 Nbd7 10.0-0 0-0 11.c4 Re8 (11...e4 12.Nd4 Be2 13.Qe2=) 12.d3 (12.d4 e4 13.Nfd2 Be2 14.Qe2 d5=) 12...e4 (12...c6 13.Nc3=) 13.de4 Ne4 14.Nbd2 Bf6 (14...Nec5!?=) 15.Nd4 ½–½. Nemeth,Laszlo (2060) – Kanya,Zoltan (2050), HUN–chT2 Erkel, 2004.

5.a4 Bd7

6.d4 ab5 7.ab5 Ra1 8.Ba1 ed4 9.Qd4 c5 10.Qa4 Na6?? (better 10...Be7=) 11.Bf6+- Qf6 12.Qe4 Be7 13.ba6 ba6 14.Qb7 (14.Ba6 d5 15.Qd5 Qa6=) 14...0-0?? (14...Be6+-) 15.Qd7 1-0. DEFFM – WEYB, freechess.org, 2021.

6.d4 e4 7.Nd2 (7.d5 Be7+=) 7...c6 (7...d5 8.c4+=) 8.c4 ab5 9.ab5 Ra1 10.Qa1 cb5 11.cb5 d5 12.Qa4 (12.Qa8 b6=) 12...Be7 13.Ne2 0-0 14.Nc3 Na6 (14...Qc7 15.Be2+=) 15.Qb3 (15.Ba3 Nc7=) 15...Nb4+= 16.Be2 Bg4 17.0-0 (17.f3 ef3 18.gf3 Bh3+=) 17...Be2 18.Ne2 Nd3 (18...Qa5 19.Nc3+=) 19.Ba3 (19.f3 Nb2 20.Qb2 ef3 21.Nf3 Bd6+=) 19...Qc7 (19...Ba3 20.Qa3 Qc7 21.Ng3+=) 20.Be7= Qe7 21.Nc1 (21.f3 Ra8 22.fe4 de4+/-) 21...Nc1 22.Rc1 Qd6 23.Qc3 h6 24.Qc5 Qb8 (24...Qd7 25.Nb3=) 25.h3 (25.Qc7 b6+=) 25...Qa8 26.Nb1 (26.b6 Qa4+=) 26...Qa2 (26...Qa1 27.Qb6 Qb2 28.Rf1=) 27.b6 (27.Nc3 Qb3+=) 27...Ra8 28.Nc3 Qd2 (28...Qa3 29.Nb5 Qb2 30.Nd6+=) 29.Nb5 (29.Rf1 Rd8 30.Qc7 Re8+/-) 29...Ra2 (29...Nd7!? 30.Qc7 Nb6=) 30.Qc8+= Kh7 Threatening mate: Qxf2 31.Rf1 (31.Qf5 g6 32.Qf6 Qc1 33.Kh2 Ra1+/-) 31...Rb2 (31...Qb4 32.Qf5 Kh8 33.Nc7+/-) 32.Qf5 (32.Nd6 Rb6 33.Nf7 Kg6 34.Ne5 Kh7+–) ½–½. Lisboa Lima,Paulo Sergio LC – Abelha,Mozart, BRA Absolut–ch, 1999.

6.Nf3 ab5 7.ab5 Ra1 8.Ba1 Be7 9.Be2 0-0 10.0-0 c6 11.c4 cb5 12.cb5 Qa5 13.Nc3 d5 14.Ne5+/- Bb4 (14...Be6 15.f4+/-) 15.Nd7 Nbd7 16.Qb1 Bc3 (16...Ra8 17.Qf5 Nb6 18.Bb2+/-) 17.Bc3+- Qc7 18.Rc1 Qd8 19.Bd4 Ne4 20.Qb2 Qa5 (20...Nef6 21.b6+-) 21.Bg7 Re8 22.Bh6 Ne5 (22...Nef6+-) 23.Qe5! Re5 (23...Re5 24.Rc8 Mate attack) 24.Rc8 Re8 (24...Qd8 25.Rd8 Re8 26.Re8) 25.Re8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 Be7

6.d4 Nbd7 7.Nc3 0-0 (7...ab5 8.de5 (8.ab5 Ra1 9.Ba1 0-0 10.e4 Re8 11.Be2 ed4+=; 8.Bb5 c6 9.Bd3 Qa5 10.Qd2 d5 11.de5 Ne5+=) 8...de5 9.ab5 Ra1 10.Qa1 e4 11.Nge2 0-0=; 7...ed4 8.Qd4 (8.ed4 d5 9.Nf3 ab5 10.ab5 Ra1 11.Qa1 Bb4=) 8...ab5 9.ab5 Ra1 10.Ba1 Ne5 11.Be2 c5=) 8.Bd3 (8.ba6 ba6 9.Rb1 Rb8 10.d5 Nc5 11.Ba3 Rb1+=; 8.Be2 ed4 9.Qd4 Nc5 10.Nf3 Bf5 11.Qd1 ab5=; 8.e4 ab5 9.ab5 Ra1 10.Ba1 ed4 11.Qd4 c5+=; 8.d5 ab5 9.Bb5 Nc5 10.Nf3 Bd7 11.0-0 c6+=; 8.de5 de5 9.Nf3 Bb4 10.Nd2 Nc5 11.ba6 ba6+=; 8.Nge2 Nb6 9.Ng3 ab5 10.ab5 Ra1 11.Ba1 Be6+=; 8.Nh3 ab5 9.ab5 Ra1 10.Ba1 Re8 11.Be2 Nb6+=) 8...d5 (8...ab5 9.ab5 Ra1 10.Ba1 ed4 11.ed4 Re8=) 9.Bf5 (9.de5 Ne5 10.Be2 Bb4 (10...ab5 11.ab5 Ra1 12.Ba1 Bd6+=) 11.Nf3 Ne4+=) 9...e4–/+ 10.Nge2 (10.Qe2 Bb4 11.Nh3 g6–/+) 10...Nb6 11.Bc8 Qc8 12.Nf4 ab5 13.ab5 Qd7 14.0-0 Nc4 15.Ra8 Ra8 16.Ba1 Bb4 17.Nh5 Nh5 18.Qh5 Bc3 19.Bc3 Qb5 20.g3 (20.Qf5 Nd6 21.Qe5 Ra2-+) 20...g6 21.Qe2 Ra2 0–1. Nardone,Domenico – Benassi,Aspasio, CEO06 Asigc, 2002.

6.d4 e4 7.d5 ab5 8.ab5 Ra1 9.Ba1 c6 10.Bd4 Nd5 (10...Qa5 11.Bc3 Qa4 12.Bd4+=) 11.Bg7= Rg8 12.Bd4 Qa5 13.Nd2 Nb4 (13...Bg4 14.f3 c5 15.fg4 cd4 16.ed4-+) 14.Bc3 d5 15.Nb3 Qa2 16.Nd4 Qa3 (16...Bc5 17.h3=) 17.Nge2 Na2 (17...c5 18.Nb3=) 18.Bd2 c5 19.Nb3 Nd7 20.Nbc1 (20.Nec1 Nc1 21.Bc1 Qa2+=) 20...Nb6 (20...Nc1 21.Nc1 Qb2 22.Nb3+=) 21.Na2 Qa2 22.Ng3 (22.h3 Bd6+=) 22...h5 (22...Nc4 23.Bc4 Qc4 24.Qh5+=) 23.h3 (23.Bc3 h4 24.Ne2 Bg4+=) 23...h4 Black fights for the Initiative 24.Ne2 Bf6 25.g4 (25.Bc3 Bc3 26.Nc3 Qa5+=) 25...hg3–/+ 26.fg3 (26.Ng3 Be5 27.Be2 Nc4 28.Bc4 Qc4-+) 26...Be5 (26...Nc4 27.Nc1 Qa4 28.Bc4 Qc4 29.Ne2-+) 27.g4 Nc4 28.Bc1 (28.Nf4!?–/+) 28...Qa5-+ 29.Kf2 Qd8 (29...Qb5?! 30.Qd5 Be6 31.Qe4=) 30.Bg2 Qh4 (30...Qh4 31.Kg1 Be6-+; 30...f5 31.Nf4 Bf4 32.ef4 fg4 33.h4-+) 0–1. Taulien,Hans_Juergen (2225) – Haas,Uwe (2110), RSX10D – XMAS–1, 2003.

5.c4 ab5

6.cb5 Bd7 7.a4 Be7 8.Nc3 0-0 9.Nf3 c6 10.d4 cb5 11.ab5 (better 11.de5 de5 12.Ne5 ba4 13.Nd7 Qd7 14.Qd7 Nbd7 15.Na4 Bb4 16.Ke2=+) 11...ed4?? (better 11...Ra1 12.Qa1 e4=) 12.Ra8+- Re8?? (12...dc3 13.Bc3 Ne4+-) 13.Nd4 (13.Qd4 Bg4+-) 13...Nd5 (13...d5+-) 14.Nd5 1-0. ClayPigeons (2155) - Tvangeste (2105), Rated Bullet game, lichess.org, 2020.

6.cb5 Bd7 7.a4 Be7 8.Nc3 0-0 9.Nf3 c6 10.d4 e4 11.Nd2 d5 12.Qb3 Be6 13.h3 (13.bc6 bc6 14.Qc2 Nbd7=+) 13...Nbd7 (13...c5 14.Ba3-/+) 14.Be2 (14.bc6 bc6 15.Qc2 Qb6=+) 14...Nb6 (14...c5 15.Ba3=+) 15.0-0 (15.bc6 bc6 16.Qc2 Nbd7=) 15...Nbd7 16.Rfc1 (16.bc6 bc6 17.Qc2 Qc7=) 16...Bd6 (16...c5 17.Qc2=+) 17.Nf1 (17.bc6!? bc6 18.Ba3+=) 17...c5=+ 18.Qc2 c4 19.Nd2 b6 (19...Qb6 20.Ba3=+) 20.Ba3 (20.f3 ef3 21.Bf3 Rc8=) 20...Nb8 21.Bd6 Qd6 22.Nf1 (22.f3 ef3 23.Bf3 Nbd7=) 22...Nbd7 23.Ng3 g6 (23...Rfc8 24.Kh1=+) 24.Bf1 Ne8 25.Nge2 Nc7 26.Nf4 f5 27.Ra2 Kh8 28.Rca1 Ra5 29.Ra3 (29.h4 Bf7=+) 29...Bf7 30.Na2?? (30.Nfe2 Ne6=+) 30...Rfa8 (better 30...Qa3 31.Ne2 Qa4-+) 31.Nb4?? (31.Nc3 Nb5! 32.Nb5 Rb5 33.ab5 Ra3 34.Ra3 Qa3-/+) 31...Nb8 (better 31...Qb4 32.R3a2 Qb3 33.Qb3 cb3-+) 32.Qb2 Ne6?? (32...g5 33.Ne2=+) 33.Ne2?? (better 33.Nfd5 Nc7 34.Nc7 Qc7 35.d5 Kg8 36.Bc4+-) 33...Ng5 34.g3 (34.Nc3 h6=) 34...Nf3 35.Kg2 (better 35.Kh1=) 35...Nd7?? (35...g5 36.Nc3=+) 36.Nf4?? (36.Nc6 Be6+/-) 36...Nf6 (better 36...g5 37.Ne2 Nb8=+) 37.Nc6+/- g5 38.Nd5?? (better 38.Na5 Ra5 39.Ne2+/-) 38...Nd5=+ (worse 38...Bd5 39.Na5 Ra5 40.Rc3=+) 39.Na5 (39.Bc4 Ne3 40.fe3 Bc4=+) 39...Ra5 40.Bc4 Ne3 41.fe3 (41.Re3 Bc4 Discovered attack; 41.fe3 Bc4 Discovered attack) 41...Bc4 42.d5? (better 42.Qc3 Bf7 43.Qc6-/+) 42...Kg8-+ 43.Rd1 (43.Qc3 Bd5 44.Qc8 Kg7 45.Qc3 Kg6-+) 43...Kf7 (better 43...h5!? 44.Raa1 h4-+) 44.Qc3 (better 44.Qh8!? Kg6 45.Qg8 Kh6 46.Qe6 Qe6 47.de6-+) 44…Bd3 (44...Bd3 45.Qh8 Bb5 46.Qh7 Ke8 47.Qf5 Qa3 48.Qe4 Kd8 49.Qf3 Ba4 50.Qf6 Kc8 51.Qe6 Bd7 52.Qb6 Rb5=+) 0-1. ClayPigeons (2105) - CitySniper (2200), Rated Bullet game, lichess.org, 2021.

4.b5 b6

5.a4 c6 6.Nf3=.

5.c4 a6 6.d4 e4 7.d5 =.

5.Bc4 Bb7 6.Nc3?? Bg2-+ 7.Bd5 Nd5 8.Nd5 Bh1 9.f3 Qh4 10.Ke2 Qh2 11.Kd3 Bg2 12.Nc7 Kd7 13.Na8 e4 14.Kc4 Kc8 15.f4 Kb7 16.Nb6 ab6 17.Bd4 Qh6 18.Kc3 d5 19.a4 Qd6 20.a5 Qb4 0–1. manofsteel2 – over10inches, Live Game Caissa's Web, 2005.

5.d4 ed4 6.Bd4 Bb7 7.Nf3 Bf3 8.Qf3 d5 9.Bc4! Be7 (9...dc4 10.Qa8) 10.Nc3 0-0 ( 10...c6!? 11.Bb3 a6 12.bc6 Nc6+/-) 11.Nd5 Nbd7 12.0-0 (< 12.Ne7 Qe7 13.Be2 a6 14.ba6 c5+–) 12...Nd5 13.Bd5 Rb8 14.Rfd1 Bd6 15.Qf5 Qe7 16.a4 Be5 17.c3 Bd4 18.cd4 Nf6 19.Bc6 Rbd8 20.a5 Qd6 21.Rdc1 Nd7 22.Be4 g6 23.Qg5 Qf6 24.Qg3 Qe7 25.Bf3 Qd6 26.Rc7 (26…Qb4 27.Bc6+–) 1–0. mrkt – N.L.PANDURANGAIAH, ChessWorld.net, 2003.

5.d4 Nbd7=.

5.d4 Ne4 6.de5+– Bb7 7.Nf3 (7.Nc3 Nc5+–) 7...Be7 (7...Nd7 8.ed6 Bd6 9.Nc3+=) 8.Nbd2 Nd2 9.Qd2 (9.Kd2?! de5 10.Ke2 Qd1 11.Rd1 f6=) 9...0-0 10.ed6 Qd6 11.Qd6 (11.0-0-0 Qd2 12.Rd2 a6+–) 11...Bd6 12.Bc4 a6 13.a4 ab5 14.ab5 Ra1 15.Ba1 c6 (15...Nd7 16.Bc3+–) 16.Ke2 cb5 17.Bb5 Rc8 18.c4 f6 (18...Na6 19.Rd1 Bf8 20.Kf1+–) 19.Rd1 Bc5 (19...Rd8 20.Nh4+–) 20.g4+– Kf7 21.Nd4 Nc6 22.Bc6 Bc6 23.Nc6 Rc6 24.Rd7 Be7 25.Kd3 Rd6 26.Rd6 Bd6 27.f4 g6 (27...Ke7!?+–) 28.Ke4 Ke6 (28...g5 29.h3+–) 29.f5 (29.f5 Kf7 30.h3+–) 1–0. Taulien,Hans_Juergen (2350) – Neffgen,Dieter (1840), RSX – Spendenturnier, 2004.

5.d4 Be7 6.de5 de5 7.Qd8 Bd8 8.Be5 0-0 9.Nf3 Bf5 10.Bd3 Bd3 11.cd3 Nbd7 12.Bc3 Nc5 13.Bb4?? (13.Ke2 a6 14.a4 Nd5+/-) 13...Be7?? (13...Nd3!? 14.Ke2 Nb4 15.Nc3-+) 14.d4?? ( 14.Ke2+/-) 14...Nd3-+ 15.Ke2 Nb4 16.a3 Nbd5 17.Nbd2 Nc3 18.Kd3 Ncd5?? ( 18...Nb5!? 19.a4 Nd6-+) 19.g3 Bd6 20.Ng5? h6 21.Ngf3 Rfe8 22.e4 Ne4 23.Ne4= Ne7 24.Nd6 cd6 25.Rhe1 Nd5 26.Re8 Re8 27.Kc4 Nf6 28.Re1 Re1 29.Ne1 Ne4 30.Kd5 Nf2 31.Kd6 Ne4 32.Kc7 Nc3 33.Kb7 Nb5 34.a4 Nd4 35.Ka7 Kf8? 36.Kb6+– Ke8 37.a5 Kd7 38.a6 Nc6 39.a7 Na7 40.Ka7 Ke6 41.Kb6 g6 42.Kc5 Ke5 43.Kc4 f5 44.Nf3 Ke4+/- 45.Nh4 g5 46.Ng6 h5 47.h3 f4 48.gf4 gf4 (49.Nh4 f3 50.Nf3 Kf3=). MasterofDisaster – hoppybeer, Live Game Caissa's Web, 2004.

5.Ne2 a6 6.d4=.

5.Ne2 g6 6.Ng3 Bg7 7.Be2 Bb7 8.0-0 Nbd7 9.a4 (9.f4 a6=) 9...a6 10.c4 0-0 11.Nc3 Re8 Black prepares the advance e4 12.Bf3 White gets the initiative 12...Bf3 13.Qf3 Nc5 14.d4 Nd3 15.Ba3 e4 (15...a5!?+=) 16.Nce4 Ne4 17.Ne4 Qe7 (17...Qd7 18.Nc3 Nc5 19.Rfb1+–) 18.Ng3 (18.Nc3 Qh4+–) 18...a5 (18...Qe6 19.Qe2 Qc4 20.Rfd1 Qa4 21.Qd3 Qb5 22.Qc2+–) 19.Qd1+– Nb4 20.Bb4 ab4 21.Qb3 c5 (better 21...f5 22.Ne2 Qe4+–) 22.Rad1 (better 22.bc6 Rec8 23.Ne2+–) 22...Qa7+= 23.dc5 (23.Ra1+=) 23...bc5 (better 23...dc5!? 24.Rd6 Be5=) 24.Rd6+– Be5 (24...Qa4!? 25.Qa4 Ra4+–) 25.Ra6+– Qc7 (25...Qe7 26.Ra8 Ra8 27.f4+–) 26.Ra8 Ra8 27.f4 Bc3 28.Ne4 (28.Kh1 Qe7+–) 28...Qe7+– 29.Nc3 (better 29.Qc2!?+–) 29...Qe3= 30.Kh1 bc3? (30...Qc3!? 31.Rb1 Qb3 32.Rb3 Ra4=) 31.h3 (31.Rd1 Qe2 32.h3 Re8+–) 31...Qd2+= 32.Rd1 Qf4 (32...Re8 33.b6 Re1 34.Re1 Qe1 35.Kh2 Qd2=) 33.Qc3+– h5 (33...Qc7 34.Ra1+–) 34.a5 (34.a5 Qf2 35.a6+–) 1–0. aravind555 – jatebautista, lichess.org, 2019.

5.f3 Bb7 6.e4 Be7 7.d3 Nbd7 8.Nd2 Nf8 9.Be2 Ng6 10.g3 a6 11.c4 ab5 12.cb5 c6 13.d4 ed4 14.Bd4 (14.bc6 Bc6 15.Rc1 Ba4=+ (< 15...Ra2 16.Qb3 Rb2 17.Qb2+=)) 14...0-0 (14...c5 15.Bb2–/+) 15.Nh3 (15.bc6!? Bc6 16.Rc1=+) 15...d5 16.e5 Nd7 17.f4 Bc8 18.bc6 Nc5 ( 18...Nde5 19.fe5 Bh3–/+) 19.0-0?? ( 19.Nf2=) 19...Bh3-+ 20.Rf2 Qc7 21.Bb5 Bc8 22.a4 Ba6 23.Rb1 Bb5 24.ab5 Ra4?? 25.Be3?? Nd3 26.Nb3?? Nf2-+ 27.Bf2 f6 28.Nd4 fe5 29.Ne6 Qd6?? 30.Nf8+– Bf8 (31.fe5 Qa3 32.Qd5 Kh8 33.Bb6 Ra8+–) 0–1. MasterofDisaster – hoppybeer, Live Game Caissa's Web, 2004.

5.Qf3 Be7?? 6.Qa8+– (6.Qa8 Bf5 7.Bd3 Bd3 8.cd3+–) 1–0. DEFFM – GuestSXFH, freechess.org, 2020.

5.Qf3 g6?? 6.Qa8+- (6.Qa8 Bf5 7.Nf3+-) 1-0. DEFFM – GuestACEG, freechess.org, 2021.

5.Nf3 c5 6.bc6 Nc6 7.Bb5 Bb7 8.0-0 e4 (8...a6!? 9.Be2 Be7=) 9.Nd4+= Qc7 10.Nc6 Bc6 11.Bc6 Qc6 12.Bf6 gf6 13.Nc3 0-0-0? (better 13...d5=) 14.Qg4+- Kb8 15.Qe4 d5 16.Qf5 h6 17.Ne2 Bd6 18.c3 Qc7 19.g3 Be7 20.Nd4 h5 21.a4 a5 (21...a6 22.Rfb1+-) 22.Rfb1 h4 23.Rb5 hg3 24.fg3 Bc5 25.Qf6 Bd4 (25...Rdg8 26.Rab1 Rh2 27.Rb6 Bb6 28.Rb6 (28.Qb6?! Qb6 29.Rb6 Ka7+=) 28...Ka8 29.Ra6 Kb7 30.Ra7 Ka7 31.Nb5 Kb7 32.Nc7+-) 26.Qd4 Rd6 (26...Rh6 27.Rab1 Rdd6 28.Ra5 Kc8 29.Ra8 Kb7+-) 27.Qh8 Kb7 (27...Ka7 28.Qd4 Qc4 29.Ra5 Kb7 30.Rb5+-) 28.Rab1 f5 (28...Ka7 29.Qd4 Qd8 30.Ra5 Kb7 31.Rab5+-) 29.Ra5 d4 (29...Qd8 30.Qh7 Qd7 31.Qd7 Rd7+-) 30.Qa8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nf3 Nbd7 6.d4 e4 7.Nfd2 Be7 (7...a6 8.ba6 c6 9.c4=) 8.a4 0-0 9.c4 d5 10.Nc3 Bb4 11.Qb3 Bc3 12.Bc3 Bb7 13.a5 a6 14.ab6 Nb6 (better 14...ab5!? 15.Ra8 Qa8 16.cb5 Nb6=) 15.c5+/- Nc4 16.c6 Nd2 17.Kd2 Bc8 18.Be2 ab5?? (better 18...Ng4 19.f3 Nf2+/-) 19.Ra8+- Kh8 (19...Qd6 20.Qb5 Rd8 21.Qb8+-) 20.Qb5 h6 (20...Rg8 21.Qb8 Qd6 22.Qc8 Rc8 23.Rc8 Ng8 24.Ra1+-) 21.Bb4 Re8 22.Rha1 Ng4 (22...Rg8+-) 23.Bg4 Qg5 24.Bc8 Qg2 25.Qf1 Qh2 26.Bf5 (26.Bf5 g6 27.Re8 Kg7 28.Be7+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nf3 e4 6.Nd4 Be7 (6...a6 7.Be2=) 7.Be2 0-0 8.0-0 Bb7 (8...a6 9.a4=) 9.c4 (9.f3 a6+=) 9...Qd7 (9...a6 10.d3=) 10.d3 (10.f3 c5 11.bc6 Nc6 12.fe4 Nd4 13.Bd4 Ne4=) 10...ed3 (10...c5 11.Nb3=) 11.Bd3+= Ne4 (11...a6 12.Nc3+=) 12.Nd2 (12.Nc3 Nc3 13.Bc3 Bf6+/-) 12...Nf6 13.a4 (better is 13.Qc2+/-) 13...Ng4?? (13...a6 14.Re1+=) 14.h3 (14.Bf5 Nf2 15.Qc2 (15.Bd7 Nd1 16.Nf5 Bg5 17.Rad1 Nd7=; worse is 15.Kf2 Qe8+–; worse is 15.Rf2 Qe8+–) 15...Nh3 16.gh3+–) 14...Nf6+/- 15.Qc2 a6 16.Ne4 Be4 (16...Ne8 17.Nc3 h6 18.Nd5+/-) 17.Be4 Ne4 (better is 17...Ra7!?+/-) 18.Qe4+– d5 19.cd5 (19.Qd5 Qd5 20.cd5 Rd8+–) 19...Bd6 (19...Bf6 20.Ne6! fe6 21.de6+–) 20.Nc6 (20.Ne6 Re8 21.Qf3 Bf8+– (worse is 21...fe6 22.de6 Qe6 23.Qa8+–)) 20...a5 (20...Nc6 21.bc6 f5 22.Qf3+/-) 21.Rfd1 (21.Nd4 Qe8 22.Qe8 Re8+–) 21...Re8 22.Qf3 f6 (22...Nc6 23.dc6 Qe7 24.Ba3+–) 23.e4 (23.Nd4 Qf7+–) 23...Bc5 (23...Nc6 24.bc6 Qf7 25.Ba3+/-) 24.Ba3 (24.e5 fe5 25.Ne5 Qe7+–) 24...Ba3 25.Ra3 (worse is 25.Qa3 Re4 26.Nd4 Qd5+/-) 25...Nc6 26.dc6 Qe7 (26...Qe6 27.Rd7 Re7 28.Rad3+–) 27.Rd7 Qe5 (27...Qb4 28.Rc7 Re4 29.Re3 Re3 30.Qe3+–) 28.Qg4 (28.Qf5!? Qe4 29.Qe4 Re4 30.Rc7 Rb8+–) 28...Qe4?? (better is 28...g6+–) 29.Qg7 1–0. retiponziani – alexson, ChessWorld.net, 2009.

5.a4 Bb7

6.c4 Nbd7 7.Nf3 Be7 8.Be2 0-0 9.0-0 h6 10.Nc3 Rc8 (10...c5 11.bc6 Bc6 12.d4=) 11.h3 (11.a5 c6+=) 11...c6 12.a5 cb5 13.cb5 ba5 14.Qa4 Nc5 (14...Bf3 15.Bf3 d5 16.Qa5= (worse 16.Nd5 Nd5 17.Qa5 N5b6–/+; 16.Bd5? Nb6 17.Qa2 Nfd5-+)) 15.Qa5 Qd7 16.Qa7?? (better 16.Qa2+=) 16...Ra8-+ 17.Qb6 Ra1?? (better 17...Bd8 18.Ne5 Qe6 (18...Bb6?! 19.Nd7 Nfd7 20.d4=+) 19.Qb7 Nb7 20.Ra8 de5-+) 18.Ra1+– (18.Ba1 Ra8 19.Bc4 Qc8-+) 18...Ra8 (better 18...e4!? 19.Nd4 Rc8+=) 19.Ra8+– Ba8 20.d4 (20.Qb8 Qd8 21.Qd8 Bd8+–) 20...ed4 (20...Bf3 21.dc5 (21.gf3?! ed4 22.ed4 Ne6+=) 21...Be2 22.c6+– (22.Ne2?! dc5 23.Ng3 Bd6+=)) 21.Nd4 Kh7 22.Bf3 (22.Bd1 Bb7+–) 22...Bf3 23.gf3 (better 23.Nf3!? Qf5 24.Nd4+–) 23...Qh3 24.Qc7 (better 24.Qc6=) 24...Bf8?? (24...Nd3!? 25.Qc4 Ne1=+) 25.b6?? (better 25.Qf7 Qc8 26.Nc6+–) 25...Nd3+= The mate threat is Ne1 26.Qf7?? (better 26.Nce2 Nd5 27.Qc2+– (27.Qf7?! Ne1 28.Nf4 Nf4 29.Qf5 Kg8 30.Qh3 Nh3 31.Kf1 d5 32.Ke1 Bd6+–)) 26...Qh4 (26...Ne1 27.Qg7 Bg7 28.b7 Qg2) 27.Nd1+– (27.Qf8 Qf2 28.Kh1 Ne1 (28...Qb2?! 29.Ne4 Ne4 30.Qf5 Kh8 31.Qc8 Kh7 32.Qf5 Kh8 33.Qc8 Kh7 34.Qf5=) 29.Qg7 Kg7 30.Nf5 Kg6 31.Ne7 Kf7 32.Ncd5 Qg2) 27...Nb2 (27...Qg5 28.Kf1 Qg6 29.Qf8 Nb2 30.Nb2 Qb1 31.Nd1 Qd1 32.Kg2+–) 28.Nb2 (better 28.Ne6 Qa4 29.Nf8 Kh8+–) 28...Qg5 29.Kf1 Qa5 (29...Qg6 30.Qg6 Kg6 31.b7+–) 30.Qf8 (30.b7!? Qa1 31.Kg2 Qb2+–) 30...Qa1 (30...Qb6 31.Ne6 Qb5 32.Kg2+–) 31.Kg2 Qb2 32.Nf5 Qb6 (32...Nd5 33.Qf7 Ne3 34.Kh3 Nd1+–) 33.Qg7 1–0. RichardSommer (2090) – JoshuaAaronLogo (2010), lichess.org, 2020.

6.c4 Be7 7.Nf3 0-0 8.Be2 Qd7 9.0-0 Bd8 (9...a6 10.d4 Bf3 11.Bf3+=) 10.Nc3 Qe7 11.h3 (11.d4 e4 12.Nd2 c6+=) 11...h6 (11...a6 12.d4 e4 13.Nd2+=) 12.d4+= Bf3 (12...e4 13.Nd2+=) 13.Bf3 c6? (better 13...e4 14.Be2 a6+–) 14.de5+– (14.bc6?! e4 15.Be4 Ne4+–; 14.Bc6?! Nc6 15.bc6 Rc8+–) 14...de5 (14...Qe5 15.bc6 Na6 16.Rb1+–) 15.bc6 (15.Ba3 Qe8 16.Bf8 Qf8+–) 15...Bc7? (15...Na6 16.c7! Bc7 17.Ba8 Ra8 18.Nb5+–) 16.Nb5 (better 16.Ba3 Qd8 17.a5 ba5 18.Bf8 Qd1 19.Rfd1 (19.Nd1?! e4+–) 19...Kf8 20.Rab1+–) 16...a5?? (better 16...Na6+–) 17.Ba3+– (17.Nc7?! Qc7 18.Bd5 Nc6 19.Bc6 Qc6 20.Be5 Rfd8+–) 17...Qd7 (17...Qd8 18.Qd8 Bd8+–) 18.cd7 Nbd7 19.Bf8 Rc8 20.Nc7 (20.Be7 Bb8+–) 20...Rc7 21.Bd6 (21.Be7 e4 22.Bf6 ef3+–) 21...Rc8 22.Bd5 (22.Be7 h5+–) 22...Rd8 23.Bc7 (better 23.Rb1 Rc8+–) 23...Rc8 24.Bd6 (better 24.Be5 Ne5 25.Rb1 Ned7+–) 24...Re8?? (24...Rd8 25.Rb1 Rc8+–) 25.Qf3 (25.Bc6 e4+–) 25...Rd8 26.Qg3 (better 26.Bc6 e4 27.Qf5 Nb8+–) 26...Kh7 27.Be5 Re8 28.Bf6 Nf6 29.Qf4 (29.Bf7 Rf8 30.Bg6 Kh8+–) 29...Rd8 30.Rfd1 Rb8 31.Qb8 b5 32.ab5 (32.Bf7 g6 33.Rd7 g5 34.Be6 Kg6 35.Qf8 g4 36.Qg7 Kh5 37.hg4 Ng4 38.Qg4) 32...Nd7 33.Qc7 (33.Be4 g6 34.Rd7 Kg7 35.Qe5 Kh7 36.Rf7 Kg8 37.Qe8) 33...Nf6 (33...Ne5 34.Qe5 f6 35.Be4 f5 36.Qf5 g6 37.Qg6 Kh8 38.Rd8) 34.Qf7 h5 (34...a4 35.Be4! Ne4 36.Rd7 Nf2 37.Qg7) 35.Ra5 (35.Be4 Ne4 36.Qh5 Kg8 37.Rd8) 35...Kh6 36.Ra7 (36.Ra6 g6 37.Qf8 Kg5 38.Qf6 Kh6 39.Qg6) 36...Kg5 (36...Ne8 37.Be4 Kg5 38.Qf4) 37.Qg7 Kf5 38.e4! Ke5 (38...Ne4 39.Rf7 A classical mating theme) 39.Qg3 (39.Qc7) 1–0. RichardSommer (2125) – drbetoturko (2070), lichess.org, 2020.

6.d4 Nbd7=.

6.Nf3 Be7 7.Bc4 a6=.

6.Nf3 Be7 7.Be2 0-0 8.0-0 Nbd7 (8...a6 9.c4=) 9.c4 a6 (9...c5 10.d4 cd4 11.ed4=) 10.d4 ed4 (10...e4 11.Nfd2=) 11.ed4 (11.Nd4 Ne5=) 11...ab5 12.ab5 (12.cb5 Re8=) 12...Ra1 13.Ba1 Qa8 (13...d5 14.Nc3=) 14.Nbd2 (14.Bb2=) 14...Ne4 (14...d5 15.Re1=) 15.Ne4 (15.d5 Nd2 16.Qd2 Bf6+=) 15...Be4 16.Qd2 (16.d5 Bf6+=) 16...f5 (16...d5!?=) 17.Bb2 h6 (17...Re8 18.Ra1 Qd8 19.Qf4+=) 18.Ra1 Qe8 19.Qc3 Bf6 20.Nd2 (better is 20.Qe3!?+=) 20...Bg2+= 21.Bf3 (21.Kg2 Qe2) 21...Bf3 22.Qf3 Qg6 (22...Bg5 23.Nb3+=) 23.Kh1 Qf7 (23...Bg5!? 24.Nb3 Re8+=) 24.Qf5= Bg5 (24...g6 25.Qf3=) 25.Qf7+= Rf7 26.Ra8 (26.Ne4 Nf6 27.Ng5 hg5=) 26...Kh7= 27.Ne4 Bf6 (27...Nf6 28.Ng5 hg5 29.Kg2=) 28.Nf6 (better is 28.Kg2!?+/-) 28...Nf6+= 29.f3 Nh5 (29...Re7 30.Ba1+=) 30.Kg2= Nf4 (30...Re7 31.Kf1=) 31.Kg3 Ne6 (31...d5 32.cd5 Nd5 33.h4+=) 32.Re8 Nf8 (32...Nf4 33.d5+=) 33.f4 (33.d5 g5+=) 33...g6 (33...Ng6!? 34.Bc1 d5+=) 34.d5+/- Kg8 (34...g5 35.f5+/-) 35.h4 Kh7 36.Kg4 (36.Bd4 Kg8+/-) 36...h5 (36...Kg8 37.Bd4+/-) 37.Kg3 Kg8 (37...Kh6 38.Bd4+/-) ½–½. Bittner,H – Lehmann, corr, 1985.

6.Nf3 Be7 7.Be2 a6 8.0-0=.

6.Nf3 Be7 7.Be2 h6 8.0-0 0-0 9.Nh4 Nbd7 10.Nf5 Nc5 11.d4 Nce4 (11...ed4 12.ed4 Nce4 13.f3+/-) 12.Nd2 (12.f3!? Ng5 13.de5 de5 14.Be5+–) 12...ed4+/- 13.Bd4 c5 14.bc6 Bc6 15.Ne4 Ne4? (15...Be4 16.Bd3 Bf5 17.Bf5+/-) 16.Bf3 ( 16.Bg7 Re8 17.Bd4+– (17.Ne7?! Qe7 18.Bd4 Qg5+/-)) 16...Bf6+/- 17.Bf6 ( 17.Qd3!? d5 18.a5+=) 17...Qf6= 18.Nd4 d5 19.Qd3 Rad8 20.Nc6 Qc6 21.Be4 de4 22.Qb3 Rfe8 23.a5 Rc8 24.Ra2 b5 25.h3 a6 26.Qb2 f5 27.Qd4 Kh7 28.Rc1 Red8 29.Qe5 Rf8 30.Qf4 Qc4 31.Rb2 Qc3 32.Rb3 Qa5 33.Qd6 Qd2?? 34.Qd2+– Rfd8 35.Qb4 Rc4 36.Qe7 (36…Rdc8 37.Qe6+–) 1–0. MammaMia – maky, Live Game Caissa's Web, 2004.

5.c4 Bb7

6.a4 Be7 7.Nf3 Nbd7 8.Be2 Nc5 9.0-0 e4 10.Nd4 0-0 11.f3 ef3 (11...a6 12.fe4 Be4 13.d3+=) 12.Bf3+– Bf3 13.Qf3 (worse 13.gf3 Nd3 14.Nc6 Nb2 15.Nd8 Nd1=) 13...Re8 (13...a6 14.Nf5+–) 14.Nc6+– Qd7 15.Nc3 (15.a5 ba5 16.Ra5 Nce4+–) 15...Qe6+– 16.Nd5 (16.Ne2 Nfe4 17.Ned4 Qg6+–) 16...Nd5+= 17.cd5 Qg6 18.Ra3 Ne4 19.d3 (better 19.Qe2+=) 19...Nd2–/+ 20.Qf2 (20.Qf5 Nf1 21.Qg6 fg6 22.Kf1 a6=+) 20...Nf1 21.Qf1 Bf8 (21...f5 22.Qf3–/+) 22.a5 (22.Bd4!?–/+) 22...Re3-+ 23.ab6 cb6 (23...Rae8 24.ba7 Re1 25.Qe1 Re1 26.Kf2 Re8-+) 24.Ra7? (better 24.Bd4 Ree8 25.Ra7 Ra7 26.Na7-+) 24...Ra7 25.Na7 Rd3 26.Nc8 (26.h3 Rh3 (worse 26...Rd5 27.Qe2-+) 27.Bc1 Rb3-+) 26...Rd5 (better 26...Rb3!? 27.Qc1 Qe4 28.h3-+) 27.Nb6 Qd3 (better 27...Rf5 28.Qe2 Qe6 29.Qe6 fe6-+) 28.Nd5=+ Qd5 29.Ba1 (29.b6!?=+) 29...Qc5–/+ 30.Kh1 d5 31.Qd1? (31.Bb2 Qb4 32.Be5 Bc5–/+) 31...Bd6 (better 31...Qb5!? 32.Bd4 Qc4-+) 32.Qd4 Threatening mate... how? 32...Qc1 (32...f6 33.Qc5 Bc5 34.g4–/+) 33.Qg1 Qf4 34.Bd4 Kf8 (34...f6 35.b6–/+) 35.Bc5 Ke7 36.Bd6 Qd6 (36...Kd6?! 37.Qb6 Ke7 38.Qb7 Ke6 39.Qc8 Ke7 40.Qb7 Ke6 41.Qc8 Ke7 42.Qb7=) 37.b6 (37.Qd4 Qf6 38.Qc5 Ke8–/+) 37...Qc6 (37...Qb4 38.h3–/+) 38.Qe3 (38.h3 g6–/+) 38...Kd7 39.Kg1 (39.h4 Qe6 40.Qf4 Qb6 41.Qf7 Kc6 42.Qe6 Kc5 43.Qe7 Kc4 44.Qe2 Kb4 45.Qe1 Ka4 46.Qa1 Kb5 47.Qg7 Qg6 48.Qg6 hg6=) 39...Kc8 40.Qh3 (40.Qd4 g5–/+) 40...Kb7 41.Qh7 Qb6 42.Kf1 Qf6 43.Ke1 d4 (43...Kc6 44.Ke2-+) 44.Qe4 Kb6 45.Kd2 Kc5 46.g3 Qd6 (better 46...Qh6 47.Kd1 Qe6-+ (47...Qh2?! 48.Qe7 Kc6 49.Qe4 Kd6 50.Qd4 Ke6 51.Qg7=)) 47.Qc2=+ Kd5 48.Qb3 Ke5 49.Qf7 Qb4 50.Ke2 Qb2 51.Kf3 Qc3 52.Kg4 Qd2 (better 52...Qc8!? 53.Kg5 Qc1 54.Kg4 Qh6=+) 53.Qg7+= Kd5 54.Qg5?? (better 54.Qf7 Kc5 55.Qe7 Kc4 56.Qe6 Kc3 57.h4+=) 54...Qg5-+ 55.Kg5 d3 56.h4 d2 57.h5 d1Q 58.Kg6 (58.h6-+) 58…Qg4 (58...Qg4 59.Kf6 Qh5 60.g4 Qg4 61.Kf7 Qf5 62.Kg8 Ke6 63.Kg7 Qg4 64.Kh6 Kf6 65.Kh7 Qg7; 58...Ke6 59.Kg5 Qf3 60.Kh6 Qf6 61.Kh7 Kf7 62.h6 Qg6 63.Kh8 Qh6) 0–1. RichardSommer (2110) – drummer0 (2090), lichess.org, 2020.

6.Nc3 a6 7.d4 =.

6.Nc3 Nbd7 7.Nf3 g6 (7...a6 8.Be2=) 8.a4 (8.Be2 a6+=) 8...Bg7 (8...a6 9.Be2=) 9.Be2 0-0 (9...a6 10.0-0=) 10.0-0 Re8 (10...a6 11.d4=) 11.d3 h6 (11...a6 12.e4=) 12.e4 Nc5 13.Qc2 (13.Nd2 Ne6=) 13...Qd7 (13...a6 14.Rfb1=) 14.Nd2 (14.a5 ba5 15.Ra5 a6+=) 14...Kh7 (14...a6!?=) 15.f4 (15.a5 Ne6+=) ½–½. Baumgarten,Horst – Cremerius,Axel, Bahn–chG Borkum, 1996.

6.Nc3 Be7 7.Nge2 Nbd7 8.Ng3 Nc5 (8...a6 9.d4=) 9.d4 ed4 10.ed4 Ne6 11.d5 Nc5 12.Be2 0-0 13.0-0 h6 14.Re1 Nh7 (14...a6 15.Nf5+=) 15.Nf5 Bf6 16.Rb1 (16.Qc2+–) 16...Bc3 (better 16...a6!?+=) 17.Bc3+– Ne4? (17...Nf6+–) 18.Qc2 (better 18.Bg7 Bc8 19.Bf8 Bf5 20.Bh6+–) 18...Nc3+– 19.Qc3 g6?? (better 19...Qf6 20.Qf6 Nf6 21.Ne7 Kh8+=) 20.Qg7 (20.Nh6) 1–0. aravind555 (1625) – Mateus_Xadrez (1620), lichess.org, 2019.

6.d4 ed4 7.Bd4 c5=.

6.d4 Nbd7=.

6.Nf3 a6 7.Be2=.

6.Nf3 c5 7.Be2 (7.d3 a6=) 7...Be7 (7...e4 8.Ng5=) 8.d3 (8.0-0 0-0=) 8...Nbd7 9.Nbd2 (9.0-0 0-0=) 9...0-0 10.0-0 h6 (10...a6 11.ba6 Ra6 12.d4=) 11.Nh4 (11.d4 Qc7=) 11...g6 (11...Re8 12.Nf5=) 12.Nhf3 e4 (12...a6 13.ba6 Ra6 14.Qb3=) 13.Ne1 (13.de4 Ne4 14.Ne4 Be4+/-) 13...ed3 (13...a6 14.ba6 Ra6 15.a3+=) 14.Nd3 a6 15.a4 Nh7 (15...d5 16.ba6 Ra6 17.cd5 Nd5 18.Qb3+=) 16.Qc2 (16.ba6 Ra6 17.Bf3 Bf3 18.Nf3 Bf6+=) 16...Bf6+= 17.Bf3 (17.Rfd1 Re8+=) 17...Bf3 18.Nf3 (worse is 18.gf3 Bb2 19.Nb2 Qh4+=) 18...a5 (18...Bb2 19.Qb2 Re8 20.ba6 Ra6 21.Rfd1+=) 19.Rad1+/- Qe7 (19...Bb2 20.Nb2 Qf6 21.Rd5+/-) 20.Nf4 Bb2 21.Nd5 Qd8 22.Qb2 Ra7 (22...Nhf6 23.Nf6 Nf6 24.Qd2+/-) 23.e4 (23.Rd2 Re8+/-) 23...f6 (23...Re8 24.Rfe1+/-) 24.Nf4 (better is 24.Qd2 Ng5 25.Ng5 fg5 26.Ne3+–) 24...Ne5? (better is 24...Qe8 25.Rfe1 g5+–) 25.Ne5 fe5 26.Ne6 (26.Ng6?! Re8 27.f4 Rg7+–) 26...Qe7 (26...Qf6 27.Nf8 Nf8 28.f4+–) 27.Nf8 Nf8 (27...Qf8 28.Qd2 Rd7 29.f4 ef4 30.Rf4+–) 28.Qd2 Rd7 29.Qh6 Qf7 (29...Qh7 30.Qd2 Ne6 31.Qd5+–) 30.f4 ef4 (30...Qg7 31.Qh3 Rf7 32.Rd6 ef4 33.Qd3+– (33.Rb6?! Qd4 34.Kh1 Qc4+–)) 31.Qf4 (better is 31.Rf4 Qg7 32.Qh3 Rd8+–) 31...Qe7 (31...Qf4 32.Rf4 Kg7 33.Rg4+–) 32.Qf6 (32.e5 Ne6 33.ed6 Qd8+–) 32...Qf6 33.Rf6 Re7 34.Rdd6 Re4 (34...Kg7 35.Rb6 Re4 36.Rf1+–) 35.Rd8 (35.Rd8 Rc4 36.Rdf8 Kg7 37.R8f7 Kh6 38.Rb6 Ra4 39.Rff6+–) 1–0. Tischer – Markow, corr, 1972.

6.Nf3 c6 7.a4 cb5 (7...a6 8.Nc3=) 8.ab5 Be7 9.d4 0-0 (9...e4 10.Nfd2+=) 10.Be2 (10.de5 Ne4+=) 10...Bf3 (10...e4 11.Nfd2 d5 12.Nc3=) 11.Bf3 e4 12.Be2 d5 13.0-0 Nbd7 14.Nd2 Re8 (14...Bb4 15.Ba3 Ba3 16.Ra3+/-) 15.Qb3+/- dc4 (15...Bd6 16.cd5 Qb8 17.h3+/-) 16.Nc4 (16.Bc4 Rf8+/-) 16...Nf8 (16...Rf8 17.f3+/-) 17.Ne5 (better 17.Ra6+/-) 17...Qd5?? (better 17...Ne6+/-) 18.Bc4+- Qd6 (18...Qe6 19.Be6 Ne6 20.Nc6+-) 19.Nf7 (better 19.Bf7 Kh8 20.Be8 Qe6+-) 19...Qb4 (19...Qc7 20.Rfc1 Qb8+-) 20.Nd6 Kh8 21.Qb4 Red8 22.Nf7 (22.Nf7 Kg8 23.Nd8 Ne6 24.Qe7 Kh8 25.Nf7 Kg8 26.Be6 h6 27.Ra7 Kh7 28.Bf5 g6 29.Ne5 Kg8 30.Qg7) 1-0. ClayPigeons (2220) - RubicRY (2215), Rated Bullet game, lichess.org, 2020.

6.Nf3 h6 7.Be2 g5 (7...a6 8.0-0=) 8.0-0+= Bg7 9.d4 ed4 (9...e4 10.Nfd2+=) 10.Nd4+– 0-0 11.Bf3 d5 (11...Bf3 12.Qf3 (12.gf3?! Nbd7=) 12...Nbd7 13.Nf5+–) 12.Nc3 (12.Nf5 a6+–) 12...c5 (better 12...Qd7!?+–) 13.Nf5+– Nbd7 14.Ng7 Kg7 15.Nd5 (worse 15.cd5 Ne5+–) 15...Bd5 16.Bd5 Rc8 17.Qf3 Qe7 18.a4 (18.Rad1 Rfd8+–) 18...Qd6 (18...Ne5 19.Qg3 Nd3 20.Bc3+–) 19.a5 Rce8 20.ab6 ab6 Opening the a–file gets White a lot of play 21.Ra7 (better 21.Rfd1 Qc7 22.Qf5+–) 21...Kg6? (21...Ne5 22.Qf5 Nd5 23.cd5+–) 22.Rfa1 (better 22.g4 Re7 23.Rd1+–) 22...Nd5 23.Qd5 (23.Qd1 f5+–) 23...Qd5 24.cd5 The passed pawn on d5 quickly leads to threats 24...Ne5 25.R1a6 (25.Bc3!? Nc4 26.R1a4 Nd6+–) 25...Nc4+– 26.Ba1 f6 27.Rb7 (27.Rc7 h5+–) 27...Rd8 (27...Rf7 28.Rf7 Kf7 29.h3+–) 28.e4 Rfe8 (28...Rf7!? 29.Rf7 Kf7+–) 29.f3+– Rb8 30.Raa7?? (better 30.Rc7+–) 30...Rb7= 31.Rb7 Ra8 32.Bc3 Ra3 33.Be1 Ra1 34.Kf2 Rb1 (34...Ra2 35.Kg3 Re2 36.Bf2=) 35.d6 Nd6 36.Rb6 Nc4 37.Rc6 (better 37.Rb8=) 37...Rb5 (better 37...Ne5!? 38.Rd6 Nc4=) 38.Bc3+– Rb6 39.Rc5 Nd6 (39...Nb2 40.Rd5+–) 40.g4 Nf7 41.Bd4 Rd6 42.Bc3 (42.Rd5 Ra6+–) 42...Rd3 (42...Rb6 43.Rd5 h5+–) 43.Ke2+– Rd6 44.Kf2 (44.Ke3 h5+–) 44...Ra6 (44...Rd3 45.h3 Rd6+–) 45.Kg3 Nd8 46.h4 gh4 47.Kh4 Ne6 48.Rc8 (48.Rf5 Ng5+–) 48...Nf4 (48...Ng5!? 49.Kg3 Rd6+=) 49.Bd2 Ng2?? (better 49...Ne2+–) 50.Kg3 Ra2 51.Rd8 (51.Kg2?! Rd2 52.Kg3 Rd6+–) 51...h5 (51...Rd2 52.Rd2 Ne3 53.Rd7+–) 52.gh5 Kh5 53.Kg2 Kg6 54.Kg3 f5 (54...Kf7 55.Bb4+–) 55.Rd6 Kh5 (55...Kf7 56.e5+–) 56.ef5 (56.Rh6) 56...Rc2 (56...Rd2 57.Rd2 Kg5 58.Rd5+–) 57.f6 (57.Rh6) 57...Kg6+– 58.Be3 Kf7 59.Bd4 Rc4 (59...Rc7+–) 60.Rd7 Kf8 61.Kf4 (better 61.Bb2 Ra4 62.Rb7 Ra6+–) 61...Ra4 (61...Ke8 62.Re7 Kd8 63.Ke5+–) 62.Ke5 (62.Kf5 Rc4+–) 62...Ke8 (62...Ra5 63.Ke4 Ra6 64.Bc5 Ke8 65.Re7 Kd8+–) 63.Re7 Kf8 64.Bc5 Ra5 65.Kd5 (65.Rc7 Ke8 66.f7 Kd8 67.Kd6 Ra6 68.Rc6 Rc6 69.Kc6 Kc8 70.f8Q) 65...Kg8+– 66.Rg7 (better 66.Ke6 Rc5 67.Re8 Kh7+–) 66...Kh8 67.Rg5 (67.Rg5 Kh7 68.f7 Ra8 69.f4 Rh8 70.Ke6 Ra8 71.f8Q Ra6 72.Kd5 Rd6 73.Qd6 Kh8 74.Qh6) 1–0. RichardSommer (2185) – Alekhin1359 (2030), lichess.org, 2020.

5.c4 Nbd7

6.Nc3 a6 7.Qf3 Ra7 8.d4=.

6.Nc3 Bb7 7.Nf3 c5 (7...a6 8.Be2=) 8.bc6 Bc6 9.d4 Bb7 (9...Be7 10.Bd3=) 10.de5 (10.Be2 Rc8=) 10...de5 11.Nd5 (better is 11.Qa4!? Qe7 12.Rd1=) 11...Nd5–/+ 12.cd5 Qe7?? (better is 12...Bb4!? 13.Nd2 Bd5-+) 13.a3 (13.Qd2 e4 14.Nd4 Rc8+=) 13...e4 14.Nd4 Qg5 (14...Qe5 15.Bc4 Rc8 16.Rc1=) 15.Nc6 Bc6 16.dc6 Qa5 17.Qd2 Qd2 18.Kd2 Nc5 19.Kc2 Rc8 20.Rc1 (20.Bc4=) 20...Rc6 (better is 20...Ke7+=) 21.Bb5+/- Nd3?? (better is 21...Kd7+/-) 22.Bc6+– Ke7 23.Rcf1 (worse is 23.Be4 Nf2 24.Bf5 Nh1 25.Rh1 a6+–) 23...Nb2 (23...f5 24.Bc3 Ke6 25.f3+–) 24.Kb2 f5 25.Rd1 Kf6 26.Kb3 (26.Rd7 a5+–) 26...Bc5 (26...Be7 27.Rd7+–) 27.Rd7 a5 28.Rhd1 Rc8 29.Bb5 (29.Bd5 h6+–) 29...Be7 (29...h6 30.R1d2+–) 30.Rb7 Bc5 31.Rdd7 Rg8 (31...g6 32.Rh7 Rd8 33.Rbf7 Ke5 34.Rhg7 a4 35.Ka4+–) 32.h4 (32.Rbc7 a4 33.Kc2 h6 34.Ba4 Ba3+–) 32...h6 (32...g5 33.Bc4 a4 34.Kc3+–) 33.Rf7 (33.Rbc7 Kg6+–) 33...Kg6 (33...Ke5 34.Rg7 Rg7 35.Rg7+–) 34.h5! Kh5 Deflection from f5 (34...Kg5 35.Rg7 Rg7 36.Rg7 Kf6 37.Rg6 Ke7 38.Bc4+–) 35.Rg7 Rd8 (35...a4 36.Ka2 Rg7 37.Rg7 Bf8 38.Rg8 Kh4 39.Bf1 Kh5 40.g3 f4 41.ef4 Bg7 42.Rg7 e3 43.Be2) 36.g3 1–0. Krueger,Bernhard – Hohmann,Yvonne, Baunatal op 4th, 1998.

6.Nf3 Be7 7.Be2 0-0 8.0-0 Ne8 (8...a6!?=) 9.d4+= f6 (9...e4 10.Nfd2 Bb7 11.f3+=) 10.Nbd2 Nb8 11.Bd3 a6 12.Qc2 f5 13.de5 Be6 14.Nd4 Qd7 15.Ne6 Qe6 16.e4 f4 (better is 16...de5 17.ef5 Qf6+–) 17.c5! de5?? (17...bc5 18.Bc4 Combination; 17...dc5 18.Bc4 Combination) 18.Bc4 (18.Bc4 Qc4 19.Qc4 Kh8 20.cb6 cb6 21.Qe6+–) 1–0. Fritz 11 – torressilva, internet, 2013.

5.Be2 Bb7

6.Bf3 Bf3 7.Qf3 Nbd7 8.Ne2 Be7 9.Nbc3 0-0 10.0-0 Nc5 11.d4 Ne6 12.Rad1 Ng5 13.Qg3 Nge4 14.Ne4 Ne4 15.Qg4 Nf6 16.Qg3 e4 17.d5 a6 18.a4 ab5 19.ab5 Ra5 20.Nd4 Qd7 21.c4 Nh5=+ 22.Qh3 Qh3 23.gh3 Ra2 24.Ba1 Bf6 25.Kh1 Be5 26.Rg1 Rf2–/+ 27.Rg5 Rh2 28.Kg1 Rh3 29.Nf5 Ba1 30.Ra1 g6 31.Ne7? Kg7 32.Ra7 Re3 33.Rc7?? Kf6 34.Rg4 Rg3 35.Rg3 Ng3 36.Nc6? e3 37.Re7 Nf5 38.Re4 h5 39.Nd4 Nd4 40.Rd4 Re8 41.Kf1 g5 42.Ke2 h4 43.Rd3 h3 44.Re3 Re3 45.Ke3 h2 46.c5 bc5 47.b6 h1Q 48.b7 Qe1 49.Kd3 Qb1 50.Ke3 Qb7 (51.Kd3 Qb3 52.Kd2 Qb2 53.Kd3 g4 54.Ke3 g3 55.Kf3 g2 56.Ke4 Qd4 57.Kf3 g1Q 58.Ke2 Qgd1) 0–1. MasterofDisaster – SunTzuu, Live Game Caissa's Web, 2004.

6.Nf3 Nbd7 7.0-0 Be7 8.a4 0-0 9.c4 Nc5 10.d4 Nce4 11.Nbd2 ed4+= 12.ed4 d5 13.cd5 Bd5 14.Ne4 Ne4 15.Ba3 Nc3 16.Qc2 Ne2 17.Qe2 Bf3 18.Qf3 Ba3=+ 19.Ra3 Qd4 20.Qd3 Qd3 21.Rd3 Rad8 22.Rfd1 Rd3 23.Rd3 g6 24.f3 h5 25.Rd7 Rc8=+ 26.Kf2 Kf8 27.h4 Ke8–/+ 28.Rd3 Rd8 29.Ke3 Rd3–/+ 30.Kd3 Kd7 31.Kd4 c6 32.g4 Kd6 33.bc6 Kc6 34.Kc4 a5 35.gh5? gh5-+ 36.f4 f5 37.Kd4 b5 0–1. tanto – pawnaholic, net–chess.com, 2002.

5.Qf3 c6

6.bc6 Qc7 7.Nc3 a6 8.Bc4 Be7 9.Nd5 Nd5 10.Bd5 (worse 10.Qd5 Be6 11.Qd3 Qc6 12.Be6 fe6=+) 10...0-0 11.Ne2 Be6 12.Nc3 (12.c4 Bf6 13.Nc3 Be7+–) 12…f5?? (better 12...Ra7+=) 1–0. onur604 (2320) – Sinmiedoanada (2105), lichess.org, 2020.

6.bc6 Qc7 7.Nc3 Nc6 8.Bc4 Be6 9.Be6 fe6 10.Nh3 h6 11.0-0 a6 12.d4 (better 12.Ne4!? Be7 13.Nf6 Bf6 14.Qg4=) 12...d5–/+ (12...ed4?! 13.Ne4 Nh7 14.ed4+=) 13.Qg3 Bd6 14.Ne2 ed4 15.Qg6 Qf7 16.Qf7 Kf7 17.ed4 Ng4 18.g3 g5 (18...Rac8 19.Rab1–/+) 19.Bc1 (19.f4 Kg6=+) 19...Nf6–/+ 20.Rb1 b5 21.Kg2 (21.f4 g4 22.Nf2 Rac8–/+) 21...Rac8 22.f4 (22.c3 Na5–/+) 22...g4 23.Nf2 Nb4 24.c3 Na2 25.Bd2 Rc4 26.Rb2 Ra4 27.f5 (27.h3 gh3 28.Kh3 Rc8-+) 27...ef5 28.Nd1 Kg6 (28...Ke6 29.Ne3-+) 29.Bf4–/+ Rd8 30.Bd6 White gets in control 30...Rd6 31.Nf4 Kh7 (31...Kf7 32.Rff2 Nc1 33.Rb1=+) 32.Rff2 Nc1 (32...Nc3 33.Nc3 Rd4 34.Rfd2 Rd2 35.Rd2–/+) 33.Ne3 (better 33.Rb1 Ne4 34.Rc1 Nf2 35.Kf2=) 33...Nd3?? (better 33...Ne4 34.Rfc2 Ra1–/+) 34.Nd3+– Re6 (34...Ra3 35.Nf5 Rc6 36.Ne7+–) 35.Ne5 Ra3 36.Rf5 h5 37.Rg5 (better 37.h3 gh3 38.Kh3+–) 37...Rc3+= 38.Nf5 Threatening mate: Rg7 38...Rc7 39.Rg6 Rb6 40.Rf2 a5 (40...b4 41.Rh6 Kg8 42.Rf1+–) 41.Rh6 (41.Nh4!? b4 42.Rgf6 Rf6 43.Rf6 b3+–) 41...Kg8 42.Nh4 Nd7 43.Rh5 Ne5 44.Re5 b4 45.Rg5 Kh7 46.Rh5 Kg8 47.Rd5 (47.Rf4 b3 48.Rg4 Rg7+–) 47...b3 48.Rg5 (48.Rd8 Kg7 49.Rd6 Rd6 50.Nf5 Kg6 51.Nd6+–) 48...Rg7 49.Re5 (49.Ra5!? b2 50.Rf1=) 49...b2= 50.Re8 Kh7 51.Rff8 Do you see the mate threat? 51...Rgb7 52.Rh8 Kg7 53.Rhg8 Kf7 (53...Kf6 54.Re1 b1Q 55.Rb1 Rb1 56.Rg4 R7b2 57.Kh3=) 54.d5= The mate threat is Ref8 54...Kf6 55.Rg6 Kf7 56.Rgg8 Threatening mate... how? 56...Kf6 57.Ref8 Ke5 58.Rf5 Kd6 59.Rg6 Kc7 60.Rf7 Kb8 61.Rg8 Ka7 62.Rff8 Threatening mate: Ra8 62...Rb5 (62...Rb5 63.Ra8 Kb6 64.Rg6 Kc5 65.Rc8 Kb4 66.Rg4 Ka3 67.Rc3 Rb3 68.Rb3 Rb3-+) 0–1. DEFFM – GuestTWWD, freechess.org, 2019.

5.Qf3 d5

6.Be5 Nbd7 7.Bb2 Bb7 8.Qg3 Ne4 9.Qh3 Ndf6 10.Nf3 Be7 11.Bd3?? (better 11.Nd4+=) 11...Bc8-/+ 12.g4 Bg4 (better 12...Ng4!? 13.Qg2 Nef2 14.Bg7 Rg8-/+) 13.Qg2= 0-0 (13...Bf3 14.Qf3 a6 15.ba6=) 14.Ne5 Bf5 (14...Bd7!?+=) 15.Rg1 g6? (better 15...Bg6+/-) 16.f3+- Nd2 (16...c5 17.Nc6 Qd7 18.Ne7 Qe7 19.fe4 Ne4 20.Be2+-) 17.Bf5 (17.Nc6 Qe8 18.Kd2 Bd3 19.cd3 Nd7+-) 17...Nb1 18.Rb1 Bb4 (18...Qe8 19.Nc6 a6+-) 19.Kf1 d4 20.Bd4 Nd5 (20...Bc5 21.Bg6! fg6 22.Bc5 bc5 23.Ng6 Kf7 24.Nf8 Qf8+-) 21.Ng6! fg6 (21...fg6 22.Be6 Decoy; 21...hg6 22.Bg6) 22.Bg6! Rf3 (22...hg6 23.Qg6 Mate attack) 23.Qf3 hg6 (23...Qf6 24.Bh5 Qg6 25.Bg6 Ne3 26.Be3 hg6 27.Rg6 Kh7 28.Qh5) 24.Rg6 (24.Rg6 Kh7 25.Qh5) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Be5+/- Be7 7.Qg3 (better 7.c4+–) 7...0-0?? (better 7...Nh5 8.Qf3 Nf6=) 8.Bc7+– Qd7? (8...Ne4 9.Bd8 Ng3 10.Be7 Nh1 11.Bf8 Kf8+–) 9.Bb8 Ne4 10.Qf4 Bd6 (10...g5 11.Qc7 Qe6+–) 11.Bd6 Nd6 12.Nc3 Bb7 13.Nf3 a6 (13...Rfe8 14.Bd3+–) 14.Ne5 (14.ba6 Ba6 15.Ba6 Ra6 16.Nd5 Rc8+–) 14...Qd8 (14...Qe6 15.ba6 Ba6 16.Ba6 Ra6 17.Nc6+–) 15.Nc6 (better 15.ba6!? Ba6 16.Ba6 Ra6+–) 15...Bc6 16.bc6 Qc7 (16...Nc8 17.Rb1 b5 18.a4 ba4 19.Rb7+–) 17.Nd5 Qd8 18.c7 Qd7 19.Nb6 Qc7 20.Na8 Ra8 21.Bd3 (21.Bd3 Qc6 22.0-0+–) 1–0. DEFFM – GuestTWWD, freechess.org, 2019.

6.Be5+/- Ng4 7.Bd4 Bc5 (better is 7...Qd6!? 8.Nc3 Be6+/-) 8.Bg7+– Rg8 9.Bb2 Be6 (9...Rg5 10.c4 Be6 11.h4+–) 10.h3 Nf6?? (10...Nh6+–) 11.Bf6 Qd6 12.d4 Bb4 13.c3 Ba3 14.Be5 Qd7 (14...Qe7 15.Na3 Qa3+–) 15.Na3 Bf5 (15...a6 16.Bd3 h6 17.Bh7+–) 16.Qf4 Ke7 17.g4 Be4 18.f3 Bg6 19.c4 a5 (19...dc4 20.Bc4 Kd8 21.h4+–) 20.cd5 Qd5 21.Bc4 Qd8 22.Bf6 Kd7 23.Bd8 (23.Bd8 Kd8 24.h4+–) 1–0. marekt – nikosdrako, internet, 2014.

5.Qf3 e4

6.Bf6 ef3 7.Bd8 Kd8 8.Nf3 Bb7 9.Bc4 f6 10.Nc3 a6 11.d4+/-.

6.Bf6 ef3 7.Bd8 Kd8 8.Nf3 Bb7 9.Bc4 f6 10.Nc3 a6 11.Nd4 ab5 12.Ncb5 c5 (12...d5 13.Be2 Bc8 14.Nc3+=) 13.Ne6 Kd7 14.Nf4 Ba6? (better 14...Nc6 15.Nd5 Nb4 16.Nb6 Kd8 17.Na8 Nc2 18.Ke2 Na1+–) 15.Be6+– Kd8 16.Bd5 Bb5 17.Ba8 Ke7 (17...Ke7 18.Nd5 Kf7+–; 17...g5 18.Nd5+–). DEFFM – GuestLVMQ, freechess.org, 2020.

6.Bf6 ef3 7.Bd8 Kd8 8.Nf3 Bb7 9.Bc4 f6 10.Nc3 a6 11.Bd5 Kc8+–.

6.Bf6 ef3 7.Bd8 Kd8 8.Nf3 Bb7 9.Bc4 f6 10.Nc3 Nd7 11.Bd5+– Bd5 12.Nd5 Nc5 (12...a6 13.Nd4 Nc5 14.Nc6 Kd7 15.c4+–) 13.a4 (13.d4 Ne4+–) 13...Be7 (13...a6 14.d4 Ne4 15.c4+–) 14.Nd4 Kd7 15.Nc6 Bd8 16.a5 (16.d4 Ne4+–) 16...ba5 17.Ra5 Nb7 18.Ra3 (18.Ra7 Ra7 19.Na7 Ke6+–) 18...Re8 (18...a5 19.d4+–) 19.0-0 (19.Ra7 Ra7 20.Na7 Ke6+–) 19...f5 (better is 19...a5!?+–) 20.Rfa1 a5 21.ba6 (21.d3 Bg5+–) 21...Nc5 (21...Kc6 22.Nb4 Kb5 23.ab7 Rb8+–) 22.Nd8 Red8 23.a7 Ne4 24.d3 Nc5 25.d4 Kc6 (25...Ne4 26.c4+–) 26.Nb4 (better is 26.Ne7 Kd7 27.Nf5 g6+–) 26...Kd7 (26...Kb5 27.Rb1 Ne6+–) 27.dc5 dc5 28.Nd3 Kc8 (28...Kc6 29.Ra6 Kb7 30.Nc5 Kc8 31.Ne6+–) 29.Nc5 (29.Nc5 h6 30.Ne6+–) 1–0. Taulien,Hans_Juergen – Neffgen,Dieter, remoteschach.de, 2002.

6.Bf6 ef3 7.Bd8 Kd8 8.Nf3 Bd7 9.a4 (9.Ng5 Be6+/-) 9...g6 (9...a6 10.Nc3+/-) 10.Bc4 Be6 11.Be6 fe6 12.d4 (12.a5 a6 13.ab6 cb6+/-) 12...Bg7 (12...a6 13.c4+/-) 13.0-0 Nd7 14.a5 h6 15.Nbd2 Kc8 16.ab6 cb6 17.c4 (17.Nh4!? g5 18.Ng6 Rd8+-) 17...Kc7 18.Ra2 Rhf8 19.Rfa1 Kb7 20.Ne4 d5 21.cd5 ed5 22.Nc3 Nf6 23.Ne5 Rfc8 24.Nc6 (better 24.Nd1+-) 24...Rc6?? (better 24...a5+=) 25.bc6+- Kc6 26.Ra7 Ra7 27.Ra7 Bf8 (27...Bh8 28.Ne2 g5 29.Ng3+-) 28.Rf7 Ne4 (28...Nd7+-) 29.Ne4 de4 30.Rf8 b5 (30...Kc7 31.Rf7 Kc6 32.Rf6 Kb7 33.Rg6+-) 31.Rb8 g5 32.g4 b4 33.Rb4 (33.Rb4 Kd6 34.Rb6 Kc7 35.Rh6+-) 1-0. DEFFM – GuestLBRR, freechess.org, 2021.

6.Bf6 Qf6 7.Qe4 Be6 8.Qa8 (8.Nc3 d5 9.Qf3 Qf3 10.Nf3 a6+/-) 8...Qa1= 9.Qb8 Ke7?? (better 9...Kd7 10.Bd3 Qb1 11.Ke2 Qa2=) 10.Qc7+- Bd7 (10...Ke8 11.Qb8 Ke7 12.Qa7 Ke8 13.Qb8 Ke7 14.Bd3 Qb1 15.Ke2 Qa2 16.Qb6+-) 11.Bd3 Qb1 12.Ke2 Qa2 (12...Qb4+-) 13.Bf5 1-0. DEFFM – GuestQSZF, freechess.org, 2021.

6.Bf6 Qf6 7.Qe4 Be7 8.Qa8 Qa1= 9.Be2?? (better is 9.Bd3 Qb1 10.Ke2=) 9...Qb1-+ 10.Bd1 0-0 11.Ne2 Bf5 12.Qa7 Bc2 13.Nc3 Qc1 14.Qc7 Bd1 15.0-0 Qd2 16.Rd1 Qc2 17.Qe7 Qc3 18.g3 Qc4 19.Rd6 Qc5 (worse is 19...Qb5 20.Rd8 Nd7 21.Rd7+/-) 20.a4 h6 21.Kg2 Kh7?? (better is 21...Qb4+=) 22.Qf8+– Nd7 23.Qe7 Ne5 24.a5! ba5 (24...Ng6 25.Qd7 ba5+–) 25.Rh6! (25.Rh6 Kh6 26.Qc5+–) 1–0. pierred (2770) – suhaspachore (2280), net–chess.com, 2011.

6.Bf6 Qf6 7.Qe4 Be7 8.d4!? c6 9.bc6+/-.

5.Nf3 Bb7

6.Be2 Nbd7 7.0-0 Be7 8.d4 ed4 9.Bd4 0-0 10.c4 c5 11.bc6 Bc6 12.Nbd2 d5 13.cd5 Bd5 14.Bc4 Nc5 15.Ne5 Qc7 16.Bd5 Nd5 17.Rc1 Bd6 18.Bc5 (18.Ndc4 Rfe8 19.Nd6 Qd6=) 18...Bc5 19.Nd3 Qe7 20.Nc5 bc5 21.Qf3 Nb4 22.a3 Nd3 23.Rc2 Rac8 24.Nc4 Ne5 25.Ne5 Qe5 26.Rfc1 g6 27.Qb7 Rc7 28.Qb2 Qd6 (28...Qb2 29.Rb2 c4 30.Rc3=) 29.Rc4 Rfc8 30.h3 Rc6 31.Qb7 R6c7 32.Qe4 Qa6 33.a4 f5 34.Qc2 Qd6 35.Kf1 (35.Qb3 Qe6+=) 35...Rc6 (35...Qh2 36.Qd2 Qh1 37.Ke2 Qg2 38.Rc5 Rc5 39.Rc5 Rc5 40.Qd8 Kf7 41.Qd7 Kf8 42.Qd6 Ke8 43.Qc5 Qh3 44.Qa7 Qg4 45.Kd2 Qb4 46.Kd3=) 36.g3 Qd5 37.Ke2 h5 38.Rd1 Qe6 39.Qd3 (39.Kf3 R6c7+=) 39...Re8 (39...Rd6! 40.Qd6 Qc4 41.Rd3 Qf7+=) 40.Qd5+= Attacking the isolated pawn on c5 40...Kf7 (40...Qd5 41.Rd5 Rec8+=) 41.Qe6 (41.Rc5!? Rc5 42.Qc5 Qa6 43.Kf3+/-) 41...Ree6 (41...Ke6 42.e4=) 42.Rd7 Re7 43.Ra7?? (better 43.Rd5 Rec7 44.f3+=) 43…Ra7-+ 0-1. kasperoff (1830) - kuda_poni (2115), Hourly SuperBlitz Arena, lichess.org, 2020.

6.Be2 Nbd7 7.c4 g6 8.0-0 Bg7 9.d4 ed4 10.Bd4 (10.Nd4 0-0+=) 10...0-0= 11.Nbd2 a6 12.a4 a5 13.Ne1 (13.Ng5 Qe7=) 13...Nc5 (13...Qe7 14.Bf3 Bf3 15.Qf3=) 14.Bf3 Nfe4 (14...Qc8 15.Ra3=) 15.Bg7 (15.Ne4 Be4 16.Be4 Ne4+=) 15...Kg7= 16.Ne4 Ne4 17.Qd4 (17.Qc2 Re8+=) 17...Qf6 18.Nc2 (18.Nd3 Rae8=) 18...Nc5 (18...Rfe8 19.Rad1=) 19.Bb7 Nb7 20.Qf6 (20.Qd5 Nc5=) 20...Kf6 21.Nd4 Rfe8 22.g3 (22.Ra3 Nc5=) 22...Nc5 23.Rfe1 Re4 (23...g5 24.h3=) 24.Kg2 (24.f3 Ree8=) 24...Rae8 25.Ra3? (25.h4 h6+=) 25...h5 (25...Rd4 26.ed4 Re1 27.dc5 bc5 28.Kf3-+) 26.h4? (26.Kf1 Ne6 27.Rd1 Nd4 28.Rd4 g5=) 26...g5 (better is 26...Rd4 27.ed4 Re1 28.dc5 bc5-+) 27.hg5= Kg5 28.Rh1 Kg6 (28...R8e7 29.Kf3=) 29.Kf3 (29.Rh3 R8e5=) 29...Kg5 30.Kg2 (30.Raa1 R8e5=) 30...Rh8 (30...Kg6 31.Rh2=) 31.f4 (31.f3!? Ree8 32.e4+=) 31...Kg6+= 32.Kf3 (32.g4 h4=) 32...Ree8 (32...f5 33.Rd1+=) 33.Ne2 Ne4 34.Rd3 Nc5 (34...f5 35.Rd5+=) 35.Ra3= Re4 (35...f5 36.Nc3+=) 36.Nd4+= Rhe8 Attacks the backward pawn on e3 (36...f5 37.Ke2+=) 37.Rc1 (37.g4 hg4 38.Kg4 Rg8= (38...Re3?? 39.Nf5 f6 40.Rh6 Kf7 41.Re3 Re3 42.Ne3+–)) 37...f5+= 38.Rh1 Rh8 39.Rh2 Nd7 (39...Ree8 40.Nb3+=) 40.Rc3 (40.Rh4 Rh7=) 40...Nf6 (40...Rhe8 41.Rh1+=) 41.Nc2 (41.Rd3 Ng4 42.Rh4 Ne3 43.Nf5 Kf5 44.Re3 Rc4–/+) 41...Ng4 (41...Rhe8 42.Rh4+=) 42.Rh1 Rhe8 The pressure on the backward pawn e3 grows ½–½. Schwichtenberg,Juergen – Daebel,Hasso, Wch Seniors Gladenbach, 1999.

6.Be2 Be7

7.0-0 Nbd7 8.c4 0-0 (8...a6 9.Nc3=) 9.Nc3 (9.d4 e4 10.Nfd2 a6=) 9...Ne4 (9...a6 10.d4=) 10.Nd5 (10.Ne4 Be4 11.d4 Bf6+=) 10...f5 (10...a6 11.Qc2 Nef6 12.Nb4=) 11.Ne7 (11.d4 Bf6+=) 11...Qe7= 12.d3 Ng5 13.Ng5 Qg5 Threatening mate: Qxg2 14.Bf3 e4 15.de4 fe4 16.Bg4 Ne5 (16...Nc5 17.Bd4=) 17.Be6 Kh8 18.Be5 Qe5 19.Bd5 Bd5 20.Qd5 Qd5 21.cd5 Rf5 (21...Kg8 22.Rac1+=) 22.Rfd1 Raf8 (22...a6 23.Rac1+=) 23.Rd2 Kg8 24.a4 (24.Rc1 R8f7+/-) 24...Re8 (24...a6 25.ba6 Ra8 26.Rd4 Ra6 27.Rad1=) 25.Rc1+/- Re7 26.Rc4 Kf8 27.Rdd4 Rfe5 28.a5 Ke8 (28...Rf7 29.a6+= (worse is 29.Re4 Rd5 30.Kf1 Rb5–/+)) 29.ab6 (29.a6 g5+/-) 29...ab6 30.Kf1 (30.h3 g5+=) 30...Kd7= 31.Ke2 Rf7 32.Rc2 Ref5 33.Ke1 Rh5 (33...Re7 34.h3=) 34.h3 (34.Kf1 Re7=) 34...Rg5= 35.Kf1 Re5 36.Rcd2 (36.h4 Rh5=) 36...Rf8 (36...Rff5 37.Ke2=) 37.Ke2 (37.Ra2 Rff5 38.g4 Rg5=) 37...Ra8 38.Rb2 (38.Rc4 Ra5 39.Rdc2 Ke7=) 38...Ra3 (38...Ra3 39.Rc4 g5=). Grund,Karl – Stabenow,Juergen, corr SOK–89–47, 1989.

7.c4 Nbd7 8.d4 e4 (8...a6 9.de5 de5 10.Ne5 Bg2 11.Rg1 Bb4 12.Bc3 Bc3 13.Nc3 Ne5 14.Qd8 Rd8 15.Rg2 ab5 16.cb5+=) 9.Nfd2+= 0-0 (9...a6 10.ba6 Ra6 11.Qc2+=) 10.0-0 (10.Nc3 Qe8+=) 10...d5 (10...a6 11.ba6 Ra6 12.Nc3+=) 11.Nc3+= c5 (11...dc4 12.Bc4 Bd6 13.Qc2+=) 12.cd5 (12.bc6 Bc6 13.cd5 Nd5 14.Nde4 N7f6 15.Nf6 Bf6 16.Nd5 Bd5+/-) 12...cd4+= 13.ed4 (worse is 13.Nde4 dc3 14.Nc3 Bb4-+; 13.Nce4?! de3 14.fe3 Bd5=) 13...Nd5 (13...Bd6 14.Nde4 Ne4 15.Ne4 Bh2 16.Kh2 Qh4 17.Kg1 Qe4 18.Qd3+=) 14.Nce4 Nf4 (14...a6 15.Qb3 Nf4 16.Bc4+=) 15.Bf3 Rc8 (15...Re8 16.Nc3 Qc8 17.Be4+/-) 16.Nf6 (16.Nc3 Bf3 17.Qf3 Ne6+/-) 16...Nf6 17.Bb7 Rc7 18.Bc6 Nd3 (18...a6 19.Qf3 ab5 20.Bb5+/- (worse is 20.Qf4 Rc6 21.Rfc1 Nd5=)) 19.Qb3 Nb2 (19...Nb4 20.Rac1+/-) 20.Qb2 Nd5 21.a3 (21.Rfe1 Nb4 22.Be4 Qd7+/-) 21...Bf6 (21...Nf4 22.Nf3+/-) 22.Nf3 Qd6 23.Rfd1 (23.Rfe1 Rfc8+/-) 23...Nf4 24.Rac1 (24.Rd2 Rfc8+/-) 24...Re7 (24...a6 25.Be4 Rc1 26.Rc1 ab5 27.Rd1+=) 25.Rc2 (25.Rd2 Rc8+/-) 25...Qe6 (25...Rc8 26.Qb4 Qe6 27.Qc4+/-) 26.g3 Nh3 (26...Qg4 27.Kh1 Ne6 28.Rdd2+/-) 27.Kg2 Qg4 28.Rcd2 (28.Qb3 Nf4 29.Kh1 Ne6+/-) 28...Nf4 (28...Rd8 29.Ne5 Qe6 30.f4+–) 29.Kh1 Ne6 (29...Ng6 30.Rc2+/-) 30.Ne5 Be5 31.de5 Nc5 (31...f6 32.f3 Qf5 33.ef6 Rf6 34.Qb3+–) 32.Rd8 (32.Kg2 Qf5 33.f4 f6 34.ef6 Rf6 35.Qa2 Ne6 36.Rd8 Rf8+–) 32...g6 (32...Ne6 33.R8d7+/-) 33.Rf8 (33.f4 Rd8 34.Rd8 Kg7+–) 33...Kf8 34.Rd8 (34.Rd6 Kg7+–) 34...Kg7 35.e6 (better is 35.f4!?+–) 35...f6+= 36.Rd7 (36.Qd2 Qe6 (worse is 36...Re6 37.Ra8 Qa4 38.Rc8+–) 37.Kg2 Qe2+=) 36...Qe6 (36...Nd7 37.ed7 Re1 38.Kg2=) 37.Re7 Qe7 38.Qc2 (38.Qd4 a6=) 38...Qd6 39.Qe2 (39.Kg2 a6=) 39...Qe6 (39...a6 40.Kg2=) 40.Qf3 (40.Qe6 Ne6 41.Bd5 Nd4=) 40...Qe7 (40...a6 41.ba6 Na6 42.Kg2=) 41.Kg2 Ne6 (41...a6 42.ba6 Na6 43.Qd3=) 42.Qd5 (42.Qe4 Qd6+=) 42...Nc5 43.h4 h5 44.Qc4 Qd6 45.Be8 (45.Bf3 Nd3 46.Be4 Nc5+=) 45...Qe6 (45...Qe7 46.Bc6=) 46.Qe6+= Ne6 47.Bc6 (47.Kf3 Nc7 48.Bc6 Kf7+=) 47...Kf8 (47...Nd4 48.a4=) 48.Bd5 (48.Kf3 Ke7 49.Ke4 Nc7+=) 48...Nc5 (48...Ke7 49.f4=) 49.Kf3 (49.Bc4 Ke7+=) 49...Nd3 (49...a6 50.ba6 Na6 51.Ke4+=) 50.Ke3 Ne5 (50...Nc5 51.Bc4+=) 51.f3 (51.f4 Nd7+=) 51...Ke7 52.Kd4 Kd6 (52...Nf7 53.Bf7 Kf7 54.Ke4+/-) 53.Be4 (53.f4 Nd7+=) 53...f5 54.Bb7 Ke6 55.Bd5 Kf6 56.Ke3 (56.Ba8 Nd7+=) ½–½. Schwichtenberg,Juergen – Reichel,H, Bad Wildungen op Seniors, 1998.

7.c4 h6 8.a4 Nbd7 9.d4 0-0 10.0-0 a6 11.de5+/- de5 12.Ne5 Ne5 13.Be5 Nd7 14.Bb2 c6 15.Bf3 Qc7 16.Qc2 Nc5 17.Nd2 Bd6 18.Qc3 f6 19.bc6 Bc6 20.Bc6 Qc6 21.Qc2 Qc7 22.Nf3 Rac8 23.Rfd1 Nd7 (23...Rfd8 24.a5+/-) 24.Qf5 Ne5 25.Qe6 Nf7 26.Rac1 Rfe8 27.Qf5 Qc6 (27...Red8 28.Rd5+/-) 28.a5 ba5 29.Qa5 Rb8 30.Bd4 Bb4 31.Qh5 a5 32.c5 Nd8 (better 32...Ba3!? 33.Rb1 Red8+/-) 33.Bf6!+- gf6? (33...Qf6 34.Qe8 Deflection (34.Qe8 Overloading); 33...gf6 34.Qg6 Double attack) 34.Qg6 (34.Qh6?! Re7 (34...Bc5 35.Qg6 Kf8 36.Rd4=) 35.Nd4 Qe4 36.Qf6 Rf7+/-) 34...Kf8 35.Qh6 Ke7 (35...Kg8 36.Qg6 Kf8 37.Rd6+-) 36.Rd6 (36.Ne5! fe5 37.Rd6 Kf7 38.Qf6 Kg8 39.Rc6 Nc6 40.Qc6 e4+-) 36...Qd6 37.cd6 Bd6 38.Nd4 Nf7 (38...Kd7 39.Nf5 Re6 40.Qh7 Ke8 41.Rd1+-) 39.Nc6 Ke6 40.Qh3 f5 41.e4 Bh2 (41...Kf6 42.Nb8 Bb8 43.Qf5 Kg7 44.Qb5+-) 42.Kh1 (42.Qh2 Rbc8 43.Qh7+-) 42...Rh8 (42...Kf6 43.Qf5 Kg7 44.Kh2 Rb7+-) 43.Qf5 Kd6 44.Qf6 Kd7 (44...Kc7 45.Qe7 Kb6 46.Qa7 Kb5 47.Qa5) 45.Qe7 Kc8 46.Na7 (46.Ne5) 1-0. onur604 (2320) - onlyhardwork (2220), Casual Rapid game, lichess.org, 2021.

7.0-0 0-0

8.Nc3 a6 9.ba6 Na6 10.d3+=.

8.Nc3 Nbd7 9.Ng5 (9.a4 a6=) 9...Nd5 (9...a6 10.ba6 Ba6 11.Ba6 Ra6 12.e4=) 10.Nd5 Bd5 11.Nh3 (11.Nf3 a6 12.ba6 Nf6=) 11...f5 (11...a6 12.ba6 Be6 13.Bg4=) 12.f4 (12.d4 Bf7 13.Qd3+=) 12...g5 (better is 12...e4!?=) 13.c4 (13.fg5 Be6+/-) 13...Be4 14.d3 Bb7 15.Bf3 (15.fg5 Bg5 16.Qd2 a6+=) 15...e4 16.de4 g4 17.Bg4 Be4 18.Bf3 (18.Nf2 Bf6 19.Bf6 Nf6 20.Ne4 Ng4 21.Qd5 Kh8+/-) 18...Nc5 (18...Bf6 19.Be4 fe4 20.Qd5 Kh8 21.Bd4 Bd4 22.Qd4 Nf6 23.Ng5+–) 19.Be4 Ne4 20.Qd5 Rf7 21.Ng5 Do you see the mate threat? 21...Ng5? (better is 21...Bg5 22.fg5 c6 23.Qc6 Rc8+–) 22.fg5 Bg5 (22...Kf8 23.Rf5 Rf5 24.Qf5 Ke8+–) 23.Rf5 Be3 24.Kh1 (24.Kh1 Qe7 25.Qa8 Qf8 26.Qd5+–) 1–0. Margraf,A – Wiesner, corr ICCF, 1985.

8.c4 a6 9.Qc2=.

8.c4 Nbd7 9.Nc3 a6 10.d4=.

8.c4 Nbd7 9.Nc3 c6 10.a4 (10.d4 cb5 11.cb5 e4+=) 10...c5 11.d4 e4 (11...cd4 12.ed4 Rc8 13.Re1=) 12.Nd2+= cd4 13.ed4 Kh8 (13...d5!?+=) 14.d5+/- Nc5 15.Qc2 (15.Qb1 Re8+/-) 15...a6 (15...Qc7!?+/-) 16.Nce4+– Nce4 17.Ne4 Rg8?? (better is 17...Ne4 18.Qe4 f5+–) 18.Ng5 Rf8 (18...g6 19.Nf7 Kg7 20.Nd8 Bd8+–) 19.Bf6 1–0. Trkn – SOONERBOB, itsyourturn.com, 2000.

8.c4 Nbd7 9.Nc3 h6 10.Qc2 a5 (10...e4 11.Nd4 Ne5 12.Nf5 a6 (12...Qd7 13.Ng3 c6 14.Nce4 Ne4 15.Ne4 cb5) 13.Ng3 ab5 (13...Nd3 14.Bd3 ed3 15.Qd3 ab5) 14.cb5 Nd3 (14...c6 15.bc6 Bc6) 15.Bd3 ed3; 10...a6 11.d4 e4 (11...ed4 12.ed4 ab5 13.cb5 Re8 14.Rfe1 Nf8 15.Qd2 Ng6; 11...ab5 12.cb5 e4 13.Nd2 d5 14.f3 ef3 15.Bf3 Bb4) 12.Nh4 ab5 13.cb5 g6 14.g3 d5 15.f3 ef3; 10...Nc5 11.d4 ed4 12.ed4 Ne6 13.d5 Nf4 14.Rae1 Qd7 15.Nd4 Rfe8) 11.d4 ed4 (11...Re8 12.h3 e4 (12...Ra7 13.Rad1 e4 14.Nd2 Bf8 15.Rde1 Qe7) 13.Nd2 Bf8 14.Rae1 (14.f3 ef3 15.Bf3 Qc8) 14...Qb8 (14...Qe7 15.f3 ef3) 15.d5 Nc5; 11...a4 12.Na4 ed4 13.ed4 Re8 14.Rfe1 Nf8 (14...Ra5 15.Nc3 Nf8) 15.d5 Ng6) 12.ed4 (12.Nd4 Nc5 (12...Re8 13.h3 Qc8 14.Rad1 Nc5 15.Nc6 Qe6) 13.Nc6 Qe8 (13...Qd7 14.Bf3 Rfe8 15.h3 Bd8) 14.Bf3 Bd8 15.Rad1 (15.Rfd1 a4) 15...a4) 12...c5 (12...Re8 13.Rae1 Nf8 (13...Nh5 14.Bd3 Ndf6 15.Bc1 Ra7) 14.d5 Ng6 (14...N8d7 15.Nd4 Nc5) 15.Nd4 Nf4) 13.bc6 Bc6 14.Rfe1 (14.Nh4 d5 (14...Rc8 15.Nf5 d5) 15.Nf5 Rc8+/- (15...Re8) 14...Bb7 (14...Re8 15.Nh4 d5) 15.Qf5 g6 (15...d5 16.Ne5 dc4 17.Nd7 Nd7 18.Bc4+=; 15...Rc8+/-) 16.Qf4+/- Kg7 17.Bc1 g5 18.Qf5 Bc8 (18...d5 19.h4 dc4 20.hg5 (20.Bc4?! Rc8 21.Bd5 Ba6+=) 20...hg5 21.Qg5 Kh8 22.Qf5+–) 19.h4 (19.Ng5 hg5 20.Qg5 Kh8+–) 19...Nc5 (19...Nb8!? 20.Qd3 g4+/-) 20.Qc2+– Ne6 21.hg5 Ng5 22.Ng5 hg5 23.Bf3 Rb8 24.Bg5 Nh7?? (24...Nd5 25.Bh6! Kh6 26.Nd5 Bg5+–) 25.Be7 (25.Be7 Qd7 26.Nb5+–; 25.Re7?! Ng5 26.Re3 Nf3 27.Rf3 Rh8+/-) 1–0. pierre – kalhee, internet, 2011.

8.c4 Re8 9.Nc3 Nbd7 10.d4 ed4 (10...a6 11.d5=) 11.ed4 (11.Nd4 a6+=) 11...Bf8 (11...a6 12.d5=) 12.a4 (12.d5 a6+=) 12...Ne4 (12...d5 13.a5=) 13.Re1 d5 14.Qb3 Ndf6 15.Ne4 Ne4 16.cd5 (16.Ne5 f6 17.Nc6 Bc6 18.bc6 Nd2+=) 16...Bd5 (16...a6 17.Bc4 ab5 18.ab5 Ra1 19.Ba1=) 17.Bc4+= Bc4 18.Qc4 Bd6 (18...a6 19.Qc2 Qd5 20.Ne5+=) 19.Ne5 Be5 20.de5 Nc5 21.Rad1 Qg5 22.a5 (22.Bd4 Qg4+/-) 22...Ne6 23.a6 h5 (23...Rad8!?+=) 24.Rd7+/- Red8 25.Red1 Rd7 26.Rd7 Rd8 27.h4 Qf5 28.Rd8 Nd8 29.Qc7 Ne6 30.Qa7 The passed pawn on a6 will quickly become a dangerous weapon 30...Qb1? (30...Nf4 31.Qb8 Kh7+–) 31.Kh2 Qb2 32.Qb6 (better is 32.Qb8 Kh7 33.a7+–) 32...Qe5+= 33.g3 Nd4 (better is 33...Qc7 34.Qc7 Nc7+/-) 34.a7 Nf3 35.Kg2 Qd5 (35...Nh4 36.gh4 Qe4 37.f3 Qc2 38.Kg3 Kh7+–) 36.Qb8 Kh7 Threatening mate... how? 37.a8Q Nh4 38.Kh2 (38.Kg1 Nf3 39.Kh1 Qd1 40.Kg2 Ne1 41.Kh2 Nf3 42.Qf3 Qf3+/-) 38...Nf3 39.Kh1 Qd1 40.Kg2 Ne1 41.Kh2 Nf3 42.Qf3 Qf3 43.Qf4 Qb3 (43...Qb7 44.Qf5 g6 45.Qc5+/-) 44.Qe4+/- g6 45.Qc6 Qb4 (45...Qa4 46.Qd5 Qa7 47.Kg2+/-) 46.b6+– h4 (46...Qb2 47.Kg2 g5 48.Qc7+–) 47.b7 hg3 48.Kg3 (48.Kg3 g5 49.Qc7 Qh4 50.Kf3 Qh1 51.Ke3 Qe1 52.Kd3 Qf1 53.Ke4 Qe2 54.Kd5 Qf3 55.Kd6 Qf2 56.b8Q+–) 1–0. Apel,Arno – Grehl,Siegfried, corr SOK–91–70, 1991.

5.Nf3 Be7

6.Bc4 a6 7.a4=.

6.Bc4 Bg4 7.d3 (7.h3 Be6 8.Be6 fe6+=) 7...Nbd7 (7...a6 8.Nc3 ab5 9.Bb5 Bd7 10.0-0+=) 8.Nbd2 (8.Nc3!?+=) 8...0-0 9.e4 h6 10.h3 Bh5 11.0-0 Nb8 (11...Nc5 12.a4=) 12.c3 Nbd7 13.Qc2 Rc8 14.a4 c6 15.a5 (15.bc6 Rc6 16.Rfe1 Rc7+=) 15...cb5 16.Bb5 ba5 17.c4 Nc5 18.Nb1?? (better is 18.Bc3 Rb8 19.Ra5+=) 18...Bf3 19.gf3 a6 20.Ba4 Rb8 (20...Nh5!? 21.Nc3 Nf4 22.Bc1 Ncd3 23.Nd5 Nh3 24.Kh2-+) 21.d4 Na4 22.Ra4 Nh5 23.de5 (23.Nc3 ed4 24.Nd5 Bf6-+) 23...Qd7 24.e6?? (better is 24.Nc3 Nf4 25.Bc1 (25.Ra5?? Qh3 26.ed6 Qg2) 25...Nh3 26.Kg2 de5 27.Nd5–/+) 24...Qe6 (24...Qe6 25.Bc1 Qh3 26.Ra5 Bf6-+) 0–1. croach (2355) – lga (2170), net–chess.com, 2015.

6.Be2 Nbd7 7.0-0 0-0 8.c4 Bb7 9.d4 e4 10.Nfd2 c5 11.d5 a6 (11...Re8 12.Nc3+/-) 12.a4 (12.ba6!? Ba6 13.Nc3+/-) 12...Re8+= 13.Nc3 Bf8 14.Qc2 Now all is on e4 14...Qe7 15.f3 (15.ba6 Ra6 16.Nb5 Rd8+/-) 15...ef3= 16.Rf3 Ne5 17.Rg3 Bc8 18.Nce4 Neg4 (18...Bf5!? 19.Nf6 Qf6=) 19.Nf6+= Nf6 20.Rf1 Ne4 21.Ne4 Qe4 22.Bd3 Qh4 23.Bf5 (23.Qf2 Qe7 24.Bf6+–) 23...Bf5+/- 24.Qf5 Ra7 25.Rh3 (better is 25.Rf4 Qh6 26.ba6+–) 25...Qe4= 26.Qh5 Qg6 27.Qf3 ab5 (27...Qc2 28.Qf5 Qf5 29.Rf5 ab5 30.ab5+=) 28.ab5 (28.Rg3 Qh6 29.ab5 Kh8+/-) 28...Rae7 (28...Qc2 29.Qf5 Qf5 30.Rf5+=) 29.Qf2 Qe4 30.Rg3 Qd3?? Attacks the backward pawn on e3 (better is 30...f5=) 31.Qf6+– Qe3 32.Re3 gf6 33.Rg3 Bg7 34.Bf6 (34.Rf6?! Kf8 35.Rg7 Kg7 36.Rd6 Kf8=) 34...Re3 (34...Re4 35.Rg7 Kf8 36.Rh7 Rg4+–) 35.Rg7 (35.Bg7?! Rg3 36.hg3 Kg7=) 35...Kf8 36.Rh7 (36.Rh7 Rh3 37.Rh3 Re2 38.Rh8) 1–0. Mallmann,Bernd (1970) – Van Leyen,Peter (1635), Rheinland–ch, 2005.

5.Nf3 Bg4

6.Be2 Be7 7.0-0 Nbd7 8.Nc3 0-0 9.a4 (9.h3 Bh5+=) 9...Be6 (9...h6 10.h3 Be6 11.a5=) 10.Ng5 Bf5 11.e4 (11.f4 ef4 12.Rf4 Bg6+=) 11...Bg6= 12.d3 h6 13.Nf3 a6 14.Re1 ab5 15.ab5 Nc5 16.h3 Ne6 17.Na2 (17.Nh4 Bh7=) 17...Nf4 (17...Qd7 18.c4=) 18.Bf1 (18.Nb4!?=) 18...Qd7+= 19.c4 Bh5 20.Re3 g5 (better is 20...Nh7!? 21.g4 Bg4 22.hg4 Qg4 23.Kh1 Ng5–/+) 21.Nb4= g4 (21...Kh7 22.Ra6=) 22.hg4+= Qg4 23.Nc6 (better is 23.g3 Nh7 24.Qe1+=) 23...Rae8?? (better is 23...Nh3! 24.Kh2 Qf4 25.g3 Ng4 26.Kg2 Ra1 27.Ne7 Kh7 28.Ba1 Nhf2 29.gf4 A) 29...Nd1? 30.Re1 ef4 31.Kg1+/- (31.Rd1?! Ne3 32.Kg1 Nd1+=); B) 29...Ne3 30.Kf2 Nd1 31.Ke1 Ra8 32.Be5 Ne3–/+ (32...Bf3?! 33.Bd4=)) 24.Qd2 Kh7 (24...Nh3 25.Kh2 Nf2+/-) 25.d4?? (25.g3 Rg8+–) 25...Nd7?? (better is 25...Nh3! 26.Kh1 Ne4+=) 26.de5 Rg8 27.Nh2 (better is 27.g3!? Ne5 28.Nfe5 de5 29.Be5+–) 27...Qg5+/- 28.g3 (better is 28.Bc1 Ng2 29.Rg3 Qd2 30.Bd2+/-) 28...de5?? (better is 28...Ne5 29.Ra7 Ne6+=) 29.Qd7+– Bc5 30.Rb3 (better is 30.Rae1 Qg7 31.Kh1 Ne6+–) 30...Ne6 (30...Qh4 31.Nd4! Bd4 32.Bd4+–) 31.Be5 (better is 31.Bh3 Rd8 32.Nd8 Rd8 33.Qc6+–) 31...Qd2?? (31...Rd8 32.Nd8 Rd8+–) 32.Rb2 (better is 32.Qd2 Ng5 33.Bg2+–) 32...Qg5 (32...Qd7 33.Bh3 f6 34.Bf5 Kg7 35.Bc7 Ra8 36.Ra8 Ra8-+ (36...Qc7 37.Ra7 Qa7 38.Na7+=)) 33.Bg2 (33.Bh3 Rd8 34.Bf5 Qf5 35.Qd8 Qf2 (35...Nd8?? 36.ef5 Nc6 37.bc6+–) 36.Rf2 Nd8+–) 33...Ra8 (33...Rd8 34.Nd8 Rd8+–) 34.Ra8 Ra8 35.Rd2 1–0. Leon Manas,Jose Francisco (1705) – Morales Sanchez,D, 1st Torneo Memorial Jose Raul Capablanca, 2013.

6.Be2 Be7 7.d4 ed4 (7...e4 8.Nfd2 Be2 9.Qe2=) 8.Bd4 (8.Nd4 Be2 9.Qe2 a6+=) 8...0-0 9.0-0 a6 10.a4 ab5 (10...c5 11.bc6 Nc6 12.Nbd2=) 11.ab5 Ra1 12.Ba1 Nbd7 13.Nbd2 (13.Nd4 Be2 14.Qe2 Ne5+=) 13...Nd5 (13...d5 14.Nd4 Be2 15.Qe2+=) 14.h3 Be6 15.Nd4 Qa8 (15...Qe8 16.Bh5 Qc8 17.Nc6+=) 16.Bf3 Bf6?? (better is 16...Qe8+=) 17.c4+– (17.Ne6 fe6 18.c4 Ba1 19.cd5 Qa2 20.de6 Ne5+–) 17...Bd4 18.Bd4 1–0. Globuschuetz – Scharf, Hannover, 1998.

6.h3 Bd7=.

5.Nf3 h6

6.Be2 Be7 7.0-0 a6 8.a4=.

6.Be2 Be7 7.0-0 Nbd7 8.c4 Nc5 (better is 8...a6!?=) 9.d4+/- ed4 10.Nd4 a6 11.a4 a5 12.Nc6 (12.Bf3 Bb7+/-) 12...Qd7 13.Ne7 Qe7 14.Nd2 (14.Nc3 Bf5+/-) 14...0-0 15.Nf3 (15.Bf3 Ra7+=) 15...Be6 16.Nd4 Qd7 (16...Bd7!?+=) 17.Nc6+/- Bf5 18.Bd3?? (better is 18.Bf6 gf6 19.Bf3+/-) 18...Nd3 (better is 18...Bd3!? 19.Bf6 Bf1 20.Ne7 Kh7 21.Kf1 gf6 22.Nd5-+) 19.Bf6 Qe6?? (better is 19...gf6 20.Qf3 Rae8-+) 20.Bd4 (better is 20.Ne7 Kh7 21.Nf5 Qf5 22.Qc2=) 20...Qc4?? (better is 20...Rae8=) 21.Ne7+– Kh7 22.Nf5 Nb4 (22...g6 23.Qg4 c5 24.bc6 (24.Nd6?! Qd5+–) 24...Qc6 25.Nh6+–) 23.Qg4 (better is 23.Bg7!? Rfe8+–) 23...g6 24.Qe4 (24.Nh6 Qd5 25.Qh4 Qh5 26.Qh5 gh5+–) 24...Nd5 (24...Qe6 25.Ng3 Qe4 26.Ne4 Nd5+–) 25.Nh6 Rfe8 (25...Nc3 26.Qh4 Ne2 27.Kh1 Nd4 28.Rfc1+–) 26.Qh4 f6 (26...Re5 27.Nf5 Kg8 28.f4 gf5 29.Qg5 Kf8 30.fe5 de5 31.Qf5+–) 27.Nf7 Kg8 28.Nh6 (28.Rfc1 Qc1 29.Rc1 c5 30.bc6 Kf7 31.Qh7 Kf8 32.Qg6 Red8+–) 28...Kf8?? (28...Kh7 29.Ng4 Kg8 30.Nf6 Nf6 31.Qf6 Re5+–) 29.Qg4 (29.Ng4 Rad8+–) 29...g5 (29...Qc2+–) 30.Qh5 Ke7 (30...Re7 31.Ng4 Ree8 32.Bf6 Nf6 33.Nf6+–) 31.Nf5 (31.Qf7!? Kd8 32.Bf6 Kc8 33.Qe8 Kb7+–) 31...Kd8 (31...Ke6 32.Rfc1 Qd3 33.Ng7 Ke7 34.Qf3+–) 32.Qf7 g4 (32...Qd3 33.Qd5 Qe4 34.Qf7 Qf5 35.Bf6 Kc8 36.Qe8 Kb7 37.Qc6 Kb8 38.Rac1+–) 33.Bf6 Kc8 34.Ne7 (better is 34.Rac1 Qa4 35.Nd6 Kb8 36.Qe8 Ka7+–) 34...Kb7 (34...Re7 35.Be7 g3 36.Qe6 Kb7 37.Rad1 gh2 38.Kh2+–) 35.Qd5 Qd5 36.Nd5 c6 (36...Re4 37.f3 gf3 38.gf3+–) 37.bc6 Kc6 38.Rfd1 Kd7 (38...Kb7 39.Rab1 Ra6 40.Bd4+–) 39.Nb6 Ke6 40.Na8 Ra8 41.Bd4 (41.Bc3 d5+–) 41...d5 42.Rdc1 Ra6 43.Rab1 Kf5 44.Rb5 Ke4 45.Rcc5 Rd6 46.f3! gf3 47.gf3 Kf3 48.Rd5 Ra6 49.Rf5 Ke4 50.Ra5 (better is 50.Rf4 Kd3+–) 50...Rg6 51.Kf2 Kd3 52.Rac5 Rh6 53.Rc3 (53.Be5 Rh3+–) 53...Ke4 54.Re5 1–0. tanto – billjack, net–chess.com, 2001.

6.Be2 Be7 7.0-0 Be6 8.c4 c6 (8...a6 9.Nc3=) 9.a4 (9.Nc3 0-0+=) 9...0-0 10.d4 e4 11.Nfd2 d5 12.Nc3 Bd6 13.bc6 Nc6 (13...dc4 14.f3 ef3 15.Bf3+=) 14.cd5 Bd5 15.Nd5 Nd5 16.Ne4 Bc7 17.Ng3 (17.Nd2 Qd6 18.g3 Rfd8+–) 17...Qh4 (17...Bg3 18.hg3 (worse 18.fg3 Ne3 19.Qd3 Nf1–/+) 18...Na5 19.Rc1+–) 18.Bf3+– White fights for the Initiative 18...Nce7 19.e4 Nf4 20.Rc1 Rac8 21.Bg4 f5 22.ef5 Bb8 (22...Bd6 23.Rc8 Nc8 24.Re1+–) 23.Rc8 Nc8 24.Re1 Nd6 25.h3 Nf7 (25...Qd8 26.Qb3 Kh8 27.d5+–) 26.d5 Ng5 (26...Bd6+–) 27.Qd4 Nfh3 (27...Ngh3 28.gh3 Qf6+–) 28.Kf1 Rf7 (28...Rf6 29.Re8 Kh7 30.Qf6 gf6 31.Bf6 Nf7 32.Bh4 Nf4 33.Rb8 Ne5+–) 29.Re8 Kh7 30.Bh5 Nf4 31.Bf7 (31.Bf7 Be5 32.Qe5 Qh1 33.Nh1 Nge6 34.de6 Ne6 35.Bg6) 1–0. GuestMCZH – GuestVXFJ, freechess.org, 2020.

6.Be2 Be7 7.a4 0-0 8.0-0 Bb7 9.d4 c6 (better 9...e4!? 10.Nfd2 d5+=) 10.de5+– Ne4 (10...de5 11.Qd8 Rd8 12.Ne5+–) 11.c4 f6 12.e6 (12.Qc2 cb5 13.Nd4 Nc5 14.ef6 Bf6 15.cb5 Nbd7+–) 12...d5 (12...Qc8 13.Bd3 c5 14.Be4 Be4 15.Nc3 Qe6 16.Ne4 Qe4 17.Qb3+–) 13.cd5 cd5 (13...cb5 14.ab5 Bd5 15.Ra4+–) 14.Nd4+– Ng5 15.Bh5 Bc8 (15...Bc5 16.f4 Bd4 17.ed4 (17.Bd4?! Ne6 18.f5 Ng5+–; 17.Qd4?! Ne6 18.Qd1 a6+=) 17...Ne6 18.f5+–) 16.Nc3 (better 16.Nf5 Be6 17.Ne7 Qe7 18.Ba3+–) 16...Be6? (16...Bc5+–) 17.h4 Bf7 (17...Nh3 18.Kh1 Nf2 19.Rf2+–) 18.hg5 Qe8 (18...fg5 19.Bf7 Rf7 20.Ne6+–) 19.Bf7 (19.Nf5 d4 20.Bf7 Qf7 21.Qd4 Bc5+–) 19...Qf7 20.gh6 Kh7 (20...g6 21.Qf3 Nd7 22.Nc6+–) 21.hg7 Qg7 (21...Rd8 22.Nf5 Nd7 23.Qg4+–) 22.Qh5 Kg8 (22...Qh6 23.Qd5 Na6 24.Nf5+–) 23.Qd5 Rf7 24.Qa8 (24.Qa8 Qf8 25.Nd5+–) 1–0. GuestBYDQ – Nerthi, freechess.org, 2020.

4.b5 c5

5.Nc3 d5 6.Qf3 e4 7.Qg3 Bd6 8.Qg7 Rg8 9.Qh6 Bf5 10.f3 Rg6 11.Qh4 Be7 12.Qf4 Be6 (12...ef3 13.Nf3 Bc2 14.Ne5=) 13.Nh3 Nh5 14.Qe5 Ng7 15.Nd5 Bd6?? (better is 15...Bd5 16.fe4 Be6–/+) 16.Nf6+– (16.Qe4?! f5 17.Qd3 Bd5 18.Bg7 Rg7 19.Qf5 Qd7 20.Qd7 Nd7=) 16...Kf8 17.Nh7 Kg8 18.Nf6 Kh8 (18...Kf8 19.Qe4 Rf6 20.Qb7 Nd7 21.Bf6 Nf6+–) 19.Qe4 Rf6 (19...Rh6 20.Qb7 Nd7 21.Nd7 Bd7+–) 20.Qh4 Kg8 21.Bf6 Qa5 (21...Qd7 22.Ng5 Bf5+–) 22.Bd3 Bf5 23.Qh6 1–0. usingprogram – bzie01, internet, 2011.

5.c4 Be7 A) 6.d4 A1) 6...Nbd7 7.Nf3 cd4 8.ed4 0-0 9.Nc3 Re8 10.Be2=; A2) 6...ed4 7.ed4 0-0 8.Nf3 a6 9.Bd3 d5 10.cd5=; B) 6.d3 a6 7.a4 b6 8.Be2 0-0 9.Bf3 Ra7 10.Ne2=.

5.c4 g6 6.d4 (6.Be2 Bg7 7.d3 (7.Nc3 0-0 8.d3 d5 9.cd5 Nd5 10.Nd5=; 7.d4 cd4 8.ed4 e4 9.Qd2 a6 10.Nc3=) 7...0-0 8.Nf3 a6 9.a4 e4 10.de4=) 6...Qe7 (6...ed4 7.ed4 Bg7 8.Nf3 0-0 9.Be2 a6 10.Nc3=; 6...cd4 7.ed4 Qe7 8.Be2 Bg7 9.Nf3 e4 10.Nfd2=) 7.de5 (7.Be2 Bg7 8.Nf3 Nbd7 9.0-0 a6 10.Nc3=) 7...de5 8.Nf3 (8.Nc3 Bg7 9.Nd5 Nd5 10.cd5=) 8...e4 9.Nfd2 Bg7 10.Nc3 0-0 11.Be2 (11.Nd5 Nd5 12.Bg7 Kg7 13.cd5 Rd8=) 11...b6 (11...Rd8 12.Qc2=) 12.Qc2 Bb7 13.0-0 Nbd7 14.Rfd1 Rad8 (14...Rfd8 15.a4=) 15.a4+= Ne8 16.a5 f5 17.ab6 ab6 18.Ra7 Nef6?? (better is 18...Nd6+=) 19.Rb7+– Qe6 20.Nf1 (20.Nd5 Rf7+–) 20...Ne5 (20...h6 21.Nd5 Nd5 22.cd5+–) 21.Nd5! Nfd7 (21...Nd5 22.cd5) 22.Nf4 (22.Qd2 Qd6+–) 22...Qe8 23.Rd2 (23.Qd2 Bf6+–) 23...g5 (23...Rb8 24.Ra7+–) 24.Nd5 Qe6 25.Qd1 g4 (25...Rf7 26.Nb6! Nd3 27.Nd7 Rfd7 28.Rd7 Qd7 29.Bg7 Kg7 30.Ng3+–) 26.Be5 Ne5 (26...Be5 27.Nb6 Nb6 28.Rd8+–) 27.Ne7 (27.Ne7 Qe7 28.Re7 Rd2 29.Qd2+–) 1–0. Plosila,Juha – Niemi,Olavi, Jyvaskyla We JyS, 2006.

5.Bc4 d5 6.Be2 Bd6 7.Nf3 +=.

5.Bc4 Nbd7 6.Nc3 (6.Be2 d5+=) 6...Nb6 7.Bb3? (better is 7.Be2+=) 7...c4-+ 8.Ba4 Na4 (better is 8...d5-+) 9.Na4–/+ b6 (9...a6 10.ba6 Ra6 11.Nc3–/+) 10.Nf3 Bb7 (10...a6 11.Nc3+=) 11.0-0 (11.Nc3 a6+=) 11...Qd7 12.d4?? (better is 12.Nc3+=) 12...Qb5-+ 13.de5 Ng4?? (13...de5 14.Be5 Qa4 15.Bf6 gf6 16.Qe2-+) 14.Nc3?? (14.Nd4 Qa4 15.Qg4 de5 16.Nf3=) 14...Qb2-+ 15.ed6 (15.Nd5 Rc8 16.Rb1-+) 15...Qc3 16.d7 (16.Nd4 h5 17.h3 Bd6 18.hg4 hg4 19.Qg4 Bh2 20.Kh1 Rd8-+) 16...Kd8 (16...Ke7 17.Nd4 Nf6 18.Qe2-+) 17.Nd4 (17.Qe2 Kd7 18.Rad1 Ke7-+) 17...Nf6 18.Nb5 (18.Qe2 a6-+) 18...a6 (better is 18...Qe5 19.Rb1 Qe4-+) 19.Nc3+– (19.Nc3 Nd7 20.Qd4+–) 1–0. Bini,Gabriele – Konstantakopoulos,Dimosthenis, Canarias en Red prel 4th blitz, 2004.

5.Bc4 Bf5 6.Nf3 (6.Bb3 Be7=+) 6...Nbd7 (6...e4 7.Ng1=+) 7.Nc3 (7.Nh4 Bg4 8.f3 Bh5=) 7...Nb6=+ 8.Bb3? (8.Be2 e4 9.Nh4 Be6=+) 8...e4 (8...c4!? 9.Ba4-+) 9.Nh4–/+ c4?? (9...Bg4 10.f3 ef3 11.gf3 Bh3-+) 10.Nf5+– cb3 11.ab3 d5 12.Na4 (better 12.f3+–) 12...Qd7?? (better 12...Nbd7+–) 13.Nb6+– Qf5 14.Na8 Bc5 15.Bf6 Qf6 (15...0-0 16.Bg7! Kg7 17.b4+–) 16.Nc7 Kd7 17.Nd5 Qg5 18.Nf4 Bb6 (18...Rd8 19.Qh5 Qh5 20.Nh5+–) 19.d4 (19.d3 Rd8 20.de4 Ke7 21.Nd5 Kf8+–) 19...Qb5 (19...a6 20.Qe2 Bc7 21.ba6 Bf4 22.ef4+–) 20.Qg4 Kc7 (20...Ke8 21.Qg7 Qb4 22.Kd1+–) 21.Qg7 Ba5 (21...Re8 22.Qh7 Ba5 23.Kd1+–) 22.Kd1 Rc8 23.Qf7 (23.Qh7 Kb8 24.Qe4 Bc7+–) 23...Kb8 24.Qh7 (24.Ra4 Bc7+–) 24...Qc6 (24...Qb4 25.Ra5! Qa5 26.Ne2+–) 25.c4 (25.Ra5?? Qc2 26.Ke1 Qb1 27.Ke2 Rc2) 25...Qb6 (25...Bc7 26.Qf5+–) 26.Qe4 (26.Qe4 Qb3 27.Qc2 Qc2 28.Kc2 Rc4 29.Kd3 Rc3 30.Ke4+–) 1–0. DEFFM – GuestDFJQ, freechess.org, 2020.

5.d4 cd4 6.ed4 e4 7.Ne2 d5 8.c4 Bb4 (8...dc4 9.Qa4=+) 9.Nec3 dc4 (9...0-0 10.Qa4 Bd6 11.cd5=+) 10.Bc4= 0-0 11.0-0 Bf5 12.Qb3 Bc3 (12...Bd6!?=) 13.Nc3+= Nbd7 (better 13...Qd7!?+=) 14.Ba3+- Nb6 15.Bf8 Nc4 16.Qc4 Kf8?? (better 16...Qf8 17.Rac1 Qd6+-) 17.Qc5 Kg8 18.Qf5 Qd4 19.Rac1 e3 (19...g6 20.Qf4 Re8 21.Qc7+-) 20.Nd5! ef2 (20...Qd5 21.Rc8 Decoy; 20...Nd5 21.Rc8 Mate attack) 21.Rf2 Qd5 22.Rc8 Rc8 (22...Qd8 23.Rfc2 Ne8 24.Rd8 Rd8+-) 23.Qc8 (23.Qc8 Qd8 24.Qd8 Ne8 25.Qe8) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Be2 Be7 6.c4 (6.d4 ed4 7.ed4 0-0=) 6...Be6 (6...0-0 7.d3+=) 7.Nc3 (7.Nf3 e4 8.Ng5 0-0=) 7...Nbd7 (7...d5 8.Nf3 d4 9.Nb1–/+) 8.Nf3 h6 (8...e4 9.Ng5 Nb6 10.d3+=) 9.d3= Qc7 (9...d5 10.0-0 d4 11.Nb1=) 10.Nd2 (10.0-0 0-0=) 10...d5 11.Bf3 (11.cd5 Nd5 12.Nd5 Bd5=) 11...d4 12.Nce4 0-0 13.Ng3 (13.0-0 Ne4 14.Ne4 f5=) 13...a6+= 14.a4 ab5 15.ab5 Nb6 (15...Ra1 16.Qa1 Ng4 17.Ndf1+=) 16.0-0 g6 (16...Ra1 17.Ba1 Ra8 18.Qc2+=) 17.Qb3 (17.Qc2 Ng4 18.Rfe1 Ra1 19.Ba1 Ra8=) 17...Nh7 18.Ra8 Ra8 19.Ra1 Ra1 20.Ba1 Ng5 21.Be2 Qb8 (21...Kg7 22.Nf3=) 22.Qa3 f5 (better is 22...Qd6!?=) 23.ed4+/- Qa8? (better is 23...ed4!? 24.Bd4! Qd6+/-) 24.Qa8+– Na8 25.de5 (25.d5 f4 26.Nge4 Ne4 27.de4 Bd7 28.Be5 g5+–) 25...Nb6 (25...f4 26.Nge4+–) 26.f4 Nf7 27.Bf3 Nd8 28.Ne2 (28.Nb3 g5+–) 28...g5 29.g3 (29.h3 g4 30.hg4 fg4+–) 29...g4 30.Bg2 h5 (30...Kf7 31.Kf2+–) 31.Nc3 Kf7 (31...Bd7 32.Nd5 Nd5 33.Bd5 Be6 34.Kf2+–) 32.Nd5 Nd5 33.Bd5 (33.cd5 Bd7+–) 33...Ke8 (33...h4 34.d4+–) 34.Kf2 Kd7 (34...h4 35.d4 b6 36.Be6 Ne6 37.d5+–) 35.Ke3 b6 (35...h4 36.d4+–) 36.Bc3 (36.d4 Kc7+–) 36...Bf8 (36...h4 37.gh4 Bh4 38.d4 cd4 39.Bd4+–) 37.Nb3 Be7 38.Be6 (better is 38.d4!? cd4 39.Bd4 Kc7+–) 38...Ne6 39.d4 cd4 40.Bd4 (40.Nd4 Bc5+–) 40...Bd8 (40...Kc7 41.Nd2+–) 41.Kd3 h4 (41...Ke7 42.c5+–) 42.Be3 (42.c5 bc5 43.Nc5 Nc5 44.Bc5 Kc7+–) 42...hg3 (42...Ke8 43.c5+–) 43.hg3 Kc7 (43...Bc7 44.c5+–) 44.Nd4 (44.c5 bc5 45.Nc5 Nc5 46.Bc5 Kb7+–) 44...Ng7 1–0. Neuwald,Volker – Welte,Rainer, Baden HT opA, 2001.

5.d4 ed4

6.ed4 cd4 7.Bd4 Ne4 8.Bd3 Qa5 9.Nd2 Nd2 (9...d5!?+=) 10.Qd2+/- Qa3 (10...Qd2 11.Kd2 Be6 12.Nf3+/-) 11.Nf3 d5 (11...Be6 12.Ng5 Nd7 13.0-0+- (13.Ne6?! fe6 14.0-0 e5+/-)) 12.0-0+- Bb4 (better 12...f6+-) 13.Qg5 f6 (13...Be6+-) 14.Qg7 (14.Qd5?! Nd7+-) 14...Rf8 15.Bf6 Rf6 16.Qf6 Bc3 (16...Nd7 17.Qe6 Be7 18.Qg8 Nf8 19.Qd5 Qc5+-) 17.Rfe1 Kd7 (17...Be1 18.Re1 Be6 19.Re6 Kd7 20.Qf7 Qe7 21.Re7 Kd6 22.Re6 Kc5 23.Qe7) 18.Qf7 Kd6 (18...Kd8 19.Re8) 19.Qe7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.ed4 d5 7.Qe2 Be7 8.dc5=+.

6.ed4 Be7 =.

4.b5 c6

5.a4 b6 6.c4 (6.Nf3 Be7=) 6...Qc7 (6...a6 7.d4 ed4 8.Bd4=) 7.Nf3 (7.d4 a6=) 7...Be7 (7...a6 8.Be2=) 8.Be2 0-0 9.0-0 (9.Nc3 a6=) 9...Bb7 (9...a6 10.Nc3=) 10.Qb3 (10.d4 Nbd7=) 10...Nbd7 11.d4 a6 12.Nc3 h6 (12...Rfe8 13.bc6 Qc6 14.Nd5=) 13.Nh4 (13.bc6 Qc6 14.Bd3 ed4 15.ed4 Qc7+=) 13...Rfe8 14.Nf5 Bf8 (14...ed4 15.Nd4 Nc5 16.Qc2 cb5 17.ab5+=) 15.Rfd1 (15.bc6 Bc6 16.Rfc1 Rac8+=) 15...Rad8 (15...g6 16.Ng3=) 16.Ba3 (16.bc6 Qc6 17.d5 Qc7=) 16...ed4 (16...g6 17.de5 Ne5 18.Nd4=) 17.ed4 (17.Nd4 Nc5 18.Qc2+=) 17...Ne4 (better is 17...g6!? 18.Ne3 Bg7+=) 18.Ne4+/- Re4 19.Bd3 (19.Qg3 Re6 20.Bd6 Rd6 21.Nh6 Kh7 22.Bd3 Kh8 23.Nf7 Kg8 24.c5 bc5 25.Nd8 Qd8 26.Bc4 Kh8 27.dc5+–) 19...Ree8+= 20.Bc2 g6 21.Qg3 The pressure on d6 grows 21...Nf6 22.Rac1 (22.Qh4 Nd7 23.bc6 Qc6+/-) 22...Bc8 23.Ne3 (23.d5 Ne4 24.Be4 Re4+=) 23...cb5 (23...Bg7!?+=) 24.cb5+/- Qb7 25.d5 (25.Bb3 Kg7 26.ba6 Qa6+/-) 25...ab5+= 26.ab5 Ne4 (26...Qd7+=) 27.Qf3 (better is 27.Be4 Re4 28.Nc4+–) 27...Nc3= 28.Bb2 (28.Re1!? Nb5 29.Bb2=) 28...Nd1–/+ 29.Qd1 f5 (29...Bg7 30.Bg7 Kg7 31.Qd4 f6 32.Bd3+=) 30.Bf6 (30.Nc4 Rd7+=) 30...Be7 31.Bb2 Bg5 (31...Rf8!?+=) 32.Qd4= The mate threat is Qh8 32...Kh7? (better is 32...Qh7=) 33.f4+– Bf6? (better is 33...Bh4 34.g3 Bg3 35.hg3 Qe7+–) 34.Qf6 Re7 (34...Rf8 35.Qd4+–) 35.Nc4 Qc7 (35...Qd7 36.Bd3+–) 36.Bd3 (36.Bd1 Qd7+–) 36...Rf7 37.Qd4 Qc5 (37...Bb7 38.Nb6 Qb8 39.Nc4+–) 38.Nb6 Qd4 39.Bd4 Bb7 (39...Bd7 40.Rc7+– (worse is 40.Nd7 Rfd7 41.h4 h5+–)) 40.Kf2 (40.Re1 Bc8+–) 40...g5 (40...Re8 41.Rc2+–) 41.g4 Kg8 42.Bf5 Kf8 (42...Re8 43.Be3 Rfe7 44.Rc3 gf4 45.Bf4+–) 43.fg5 hg5 44.Rc3 (44.Be3 Re8 45.Bg5 Re4 46.Nd7 Kg7 47.Bf6 Rf6 48.Nf6 Rf4 49.Ke3 Rf5 50.gf5 Kf6+–) 44...Rb8 (44...Re8 45.Rh3 Re4 46.Bc3 Rf4 47.Kg3+–) 1–0. Bednar,J – Stolba,O, (year?).

5.a4 Qb6 6.d4 Nbd7 7.c4 ed4 8.Bd4 c5 9.Bb2 Be7 10.Be2 0-0 11.a5 Qc7 12.Nf3 b6 13.0-0 ba5 14.Bc3 Nb6 15.Ba5 Bb7 16.Nbd2 d5 17.Qc2 dc4 18.Bc4 Bd5 19.e4 Bc4 20.Nc4 Rab8 21.Nce5 Bd6 (better 21...Rb7!?+/-) 22.Nc6+- White plans e5 22...Rb7? (better 22...Ng4 23.h3 Nh2 24.Nh2 Bh2 25.Kh1 Rbe8+-) 23.e5 Nfd5 (23...Be5 24.Nfe5 Qd6 25.Rac1+-) 24.Rad1 Be7 (24...Ne3 25.fe3 (worse 25.ed6 Nc2 26.dc7 Rc7+-) 25...Be7 26.Nd2+-) 25.Rd5! a6 (25...Nd5 26.Ne7 Double attack (26.Bc7 Pinning; 26.Bc7 Deflection; 26.Bc7 Remove defender)) 26.Ne7 Qe7 27.Rd6 (27.Bb6!? Rb6 28.ba6 Ra6 29.Rc5 Ra2+-) 27...Nc8 28.ba6 Rb5 29.Qd2 Nd6 30.ed6 (worse 30.Qd6 Qd6 31.ed6 Ra5-+) 30...Qd7 31.Ne5 Qe6 32.d7 Ra5 (32...Rbb8 33.Re1 h6+-) 33.d8Q (33.d8Q Qe5 34.Q2a5+-) 1-0. onur604 (2320) - bruno1986 (2215), Casual Rapid game, lichess.org, 2021.

5.a4 d5 6.Be5+= Nbd7 7.Bb2 Bb4 (7...Bd6 8.Nf3+=) 8.Nf3+= Qc7 9.Be2 h6 (9...0-0 10.0-0+=) 10.0-0+/- Be7 (10...0-0 11.c4+/-) 11.c4 Nc5 (11...0-0 12.Qc2+/-) 12.Be5+– Bd6 13.Bf6 gf6 14.bc6 bc6 (14...dc4 15.Na3+–) 15.cd5 cd5 16.Nc3 Be6 17.Rc1 Bd7? (17...Rc8 18.d4 Nb7+–) 18.d4 Qb6 (18...Ne6 19.Nd5 Qd8+–) 19.dc5 Qc5 (19...Bc5 20.Nd5 Qd6 21.Rc5 Qc5 22.Nf6 Ke7 23.Nd7+–) 20.Nd5 1–0. marekt – mick_drawdog, chessworld.net, 2015.

5.a4 Bf5 6.Nf3 Nbd7 7.Be2 Qc7 8.0-0 d5 9.d4 e4 10.Nh4 Be6 11.g3 g5 12.Ng2 h5 13.Nd2 h4 14.c4 hg3 (14...dc4 15.Rc1=+) 15.fg3=+ Bd6 16.cd5 Bg3 Attacking the backward pawn on h2 (better 16...cd5 17.Rc1 Qa5=) 17.de6?? (better 17.hg3 cd5 18.Qe1+/-) 17...Bh2-+ 18.Kh1 fe6?? (better 18...Bf4 19.Bh5 Rh5 20.Qh5 Nh5 21.ed7 Qd7 22.ef4 Ng3 23.Kg1 gf4-/+) 19.d5?? (19.b6 Qb6 20.Nc4 Qc7=) 19...ed5 (better 19...Bf4! 20.Bh5 Rh5 21.Qh5 Nh5 22.dc6 Ng3 23.Kg1 Nc5 24.ef4 Nd3-+) 20.Bf6 (better 20.Rf6!? Ke7 21.Rf5 Be5 22.Bh5 Bb2 23.Rf7 Kd8 24.Ra2=+) 20...Nf6-/+ 21.Rf6 Be5 22.Kg1? (better 22.Bh5 Kd8 23.Rf5 Ba1 24.Ne4=+) 22...Bf6-+ 23.Nf1 (23.Bh5 Ke7 24.Rb1 Rh6 25.bc6 bc6-+) 23…Ba1 (23...Ba1 24.Qa1 Rh6-+) 0-1. kasperoff (1840) - anongamer (2350), Hourly SuperBlitz Arena, lichess.org, 2020.

5.a4 g6 6.c4 Bg7 7.d3 (7.d4 0-0=) 7...0-0 8.Be2 d5 (8...a6!?=) 9.Be5+= Nbd7 10.Bc3 dc4 11.dc4 Opening the d–file gets Black a lot of play 11...Re8 12.Nf3 Qc7 13.0-0 Nc5 14.Nbd2 Bf5 15.h3 (15.Bd4 Ncd7+/-) 15...Rad8+= Black gets in control 16.Re1 (better is 16.Bd4 Ne6 17.Be5+= (17.Ba7 Ne4 18.Ra3 Qa5-+)) 16...Nce4+= 17.Bb2 (17.Bf6!? Bf6 18.Ne4 Be4 19.Qb3 Ba1 20.Ra1+=) 17...Nd2 18.Nd2 Ne4 19.Bg7 Rd2 20.Qc1 Kg7 21.Ra3 (21.Qa3 Qd8 22.Ra2 Qh4-+) 21...Qd7 (21...Red8 22.Qa1 f6 23.a5-+) 22.g4 (22.Rd1-+) 22...Re2?? (better is 22...Qd8 23.Qa1 Kg8-+) 23.Re2–/+ Bg4 24.hg4 (24.bc6 bc6 25.hg4 Qg4 26.Kf1 Re5-+) 24...Qg4 25.Kf1 Qf3 26.Qa1 f6 27.Rea2 Rd8 28.Ke1 (28.Kg1-+) 28...Qg2 (28...c5 29.Qd4 cd4 30.ed4 Nc3 31.Rc3 Qc3 32.Rd2 Rd4 33.Kf1 Rd2 34.c5 Qf3 35.Kg1 Qf2 36.Kh1 Qe1) 29.Rb2 (29.Qd4 Qg1 30.Ke2 Qf2 31.Kd3 Qf1 32.Kc2 Rd4 33.ed4 Qc4 34.Kb1 Nc3 35.Rc3 Qc3 36.Rc2 Qd4 37.a5 Qb4 38.Kc1 Qe1 39.Kb2 Qe5 40.Kc1 Qa1 41.Kd2 Qa5 42.Kc1 Qb5 43.Rd2-+) 29...Qg1 30.Ke2 0–1. Bittner – Haeusler, 1985.

5.c4 a6 6.a4 Nbd7 7.Nc3 Qa5 (7...Be7 8.d4+=) 8.Nf3= Nc5 9.d4 Nce4 10.Qb3 (10.Qc2 ed4 11.Nd4 c5+/-) 10...Be6 (10...Ng4 11.Be2 Nef2 12.0-0+=) 11.Be2 Be7 12.0-0 0-0 (12...ed4 13.Ne4 (worse is 13.Nd4 Nd2 14.Qd1 Nf1–/+; 13.ed4?! 0-0+=) 13...Ne4 14.bc6 (worse is 14.Nd4 Nd2 15.Qc2 Nf1+=; 14.Bd4?! Bf6+=) 14...bc6 15.Nd4+=) 13.Qc2 Nc3 14.Bc3 (14.Qc3 Qc3 15.Bc3 ab5 16.ab5 cb5 17.de5 Ne4–/+ (17...bc4 18.ef6 Bf6 19.Bf6 gf6 20.Nd4+–)) 14...Qb6 15.a5 Qd8 16.de5 de5 17.bc6 bc6 18.Ne5 Qc7 19.Bf3 Rab8? (19...Bd6 20.Qb2 Rab8-+) 20.Nc6+– Rbc8 21.Rab1 (worse is 21.Ne7 Qe7 22.Rfb1 Rc4+–) 21...Rfe8 22.h3 Bd7 (22...h6 23.Be5 (23.Ne7?! Qe7 24.Bb7 Rc4 25.Ba6 Bf5 26.Bf6 Rc2 27.Be7 Re7+–) 23...Bd6 24.Bf6 gf6 25.c5+–) 23.Rb7 Qd6 (23...Bc6 24.Rc7 Rc7 25.Be5+–) 24.Bb4 Qe6 25.Ne7 (25.Be7?! Bc6 26.Bc6 Re7 27.Re7 Qe7+–) 25...Re7 26.Rb6 Qe5 27.Be7 Qe7 28.Bb7 Rc7 29.Ba6 Ra7 (29...Qe5 30.Rb8 Be8 31.Qd2+–) 30.Qb2 Qc5 (30...Be8 31.Rd1+–) 31.Rb8 Be8 32.Bb5 Kf8 33.Rd1 Qe7 (33...Re7 34.Rdd8 Re6 35.Be8 Re8 36.Re8 Ne8 37.Qb5 Qb5 38.cb5+–) 34.a6 (better is 34.Rdd8 Ra5 35.Be8 g6+–) 34...g6 (34...Nd7 35.Re8! Qe8 36.Qb4 Qe7 37.Qe7 Ke7 38.Rd7 Rd7 39.Bd7 Kd7+–) 35.Re8! Ne8 36.Qh8 1–0. Taulien,Hans_Juergen – Hangmann,Christian, remoteschach.de, 2002.

5.c4 cb5 6.cb5 Be7 7.Nf3 Bg4 8.Be2 0-0 9.0-0 Qd7 10.Ng5 Be2 11.Qe2 Ng4 (11...Qf5 12.Nf3=+) 12.Nf3 e4 13.Nd4 Bf6 (13...Ne5 14.f3 Nd3 15.Ba3=) 14.h3 (14.d3 ed3 15.Qd3 Ne5+=) 14...Bd4 15.Bd4 Nh6 (15...Ne5 16.Nc3 f5 17.Be5 de5 18.g4=) 16.d3 (16.Nc3!? Qe6 17.d3+=) 16...Qb5= 17.Nc3 ed3 18.Nb5 de2 19.Rfe1 Nf5 (19...Nc6 20.Nd6 Nd4 21.ed4=) 20.Bb2 ( 20.Nc7!? Nc6 21.Na8 Ra8 22.Re2 Nfd4 23.ed4+/-) 20...Nc6= 21.Re2 a6 22.Nd4 Nfd4 23.ed4 Rfe8 24.Re8 Re8 25.a3 Re4 26.d5 Nd4 27.Kh2 Nb3 28.Rb1 Nd2 29.Rc1 h6 30.Rc8 Kh7 31.Rb8 b5 32.Rb7 Re2 33.Bd4? Nc4 34.Rf7= Na3?? 35.Rg7+– Kh8 36.Ra7 Kg8+= 37.Ra6 b4 38.Rd6+/- (38…Nc2 39.Bc5+/-) 1–0. stoker – cip85, Live Game Caissa's Web, 2004.

5.c4 Nbd7 6.Nc3 (6.d4 Be7+=) 6...Nc5 (6...cb5 7.Nb5 Be7 8.d4+=) 7.d4= White fights for the Initiative 7...ed4 8.ed4 Qe7 9.Be2 Nce4 (9...Ne6 10.Nh3=) 10.Nf3 (10.Ne4 Ne4 11.Nf3 d5+=) 10...Bg4 (10...Nc3 11.Bc3 Ne4 12.Bb2=) 11.0-0+= h5 (11...Nc3!? 12.Bc3 Ne4+=) 12.Re1+/- 0-0-0 (12...Nc3 13.Bc3 Ne4 14.Bd3+/-) 13.Bd3 (13.bc6 bc6 14.Ne4 Ne4+–) 13...d5 (better is 13...Nc3 14.Bc3 Qc7+/-) 14.cd5 (14.bc6 bc6 15.cd5 cd5+–) 14...cd5 (14...Nc3!? 15.Bc3 Qa3=) 15.Rc1 (15.Ne4 de4 16.Be4 Ne4 17.Qc2 Kb8 18.Re4 Qb4+/-) 15...Kb8 16.b6 (16.Qc2 Qc7 17.Ne5 Nc3+/-) 16...Qb4 (16...a6 17.h3 Be6 18.Ne4 de4 19.Be4 Ne4 20.Re4+=) 17.ba7+– (worse is 17.Be4 de4 18.Ne4 Ne4+=; 17.Ne4?! de4 18.ba7 Ka7+/-) 17...Ka7 (17...Ka8 18.Rc2+– (18.Be4 de4 19.Ne4 Ne4–/+; 18.Ne4?! Bf3 19.gf3 Qb2+/-)) 18.Nb5 (18.Qc2 Bf3 19.Nb5 Ka6+–) 18...Kb8 19.Qc2 (better is 19.Rb1 Qa5 20.h3+–) 19...Qe7?? (better is 19...Qa5+/-) 20.Ba3 Qd7 (20...Rc8 21.Qa4 Qa3 22.Rc8 Kc8 23.Na3 Ba3 24.Qa3+–) 21.Ne5 Qc8 (21...Ba3 22.Nd7 Rd7+–) 22.Qa4 Bc5 23.Bc5 Nc3 24.Qa7 1–0. Bommert,Christian – Rutmann,Ulrich, Dortmund ABC Anfaenger, 2002.

5.c4 Be7 6.Nc3 0-0 7.Qc2 d5 8.bc6 bc6 9.cd5 Nd5 10.Nd5= Qd5 11.Nf3 e4 12.Ne5 Bf5 13.g4 Bg6 14.Ng6= hg6?? 15.Bc4+– Qd6 16.Qe4 Nd7 17.h4 Rae8 18.Qc2 Ne5 19.Be5 Qe5 20.Rb1 Qd6 21.g5 Rb8 22.Rb8 Rb8 23.h5 Qf6?? 24.gf6 (24.gf6 Bf6 25.hg6+–) 1–0. Mroz,Antoni – Wasylow,Jerzy, corr Poland, 1989.

5.c4 Bf5 6.d3 Be7 7.e4 Bg6 8.h4 h6 9.g4 Nbd7 10.Nf3 Ng4 11.Bh3 Ngf6 12.Rg1 Qc7 13.d4 Ne4 14.Rg6 fg6 15.Qd3 d5 16.Nbd2 Nd2 17.Qg6 Kd8 18.Qg7?? Bf6 19.Qd7 Qd7 20.Bd7 Nf3 21.Ke2 Nd4 22.Bd4 Kd7 23.bc6 bc6 24.Bc5 e4 25.cd5 Ba1 26.dc6 Kc6 27.Be3 Bf6 28.a4 Bh4 29.a5 Kd5 30.a6 Bg5 31.Bg5 hg5 32.Ke3 Rh6 33.f4 gf4 34.Kf4 Ra6 35.Ke3 Rc6 (36.Ke2 Rg8 37.Kf1 Rc2 38.Ke1 Rg1#; 35...Ra3 36.Kf2 Ra2 37.Ke3 Rc2 38.Kf4 Rf8 39.Kg3 Rg8 40.Kh3 e3 41.Kh4 Rh2#) 0–1. MasterofDisaster – yaman, Live Game Caissa's Web, 2004.

5.Nf3 Be7 6.Be2 0-0 7.0-0 Bg4 8.d3 (8.h3!? Bf5 9.Nc3=) 8...cb5–/+ 9.Nbd2 Nc6 (9...Qc7 10.c3–/+) 10.c4 (10.d4 e4 11.Ng5 Be2 12.Qe2 d5 13.Qb5 Qc7–/+) 10...bc4–/+ 11.Nc4 Rc8 12.Qb3 Qd7 13.Rac1 h6 14.Rc2 Be6 15.Rcc1? (15.Rb1 Na5! 16.Qc3 Nc4 17.dc4 Bf5-+) 15...Na5 (better is 15...b5 16.Qb5 Rb8-+) 16.Qd1 Qb5 17.Na5 (17.a4 Qa6 18.Nfd2 Nc4 19.Nc4 b5 20.ab5 Qb5+=) 17...Qa5 (17...Qb2 18.Rb1 Qa2 19.Nc4-+) 18.a3 Qb6 (18...b5 19.d4 Rc1 20.Qc1-+) 19.Qd2 Rc6 20.Rc2 (20.Rc6 Qc6 21.Rc1 Qd5+=) 20...Rfc8 21.Rfc1 Nd7 22.Rc6 Rc6 23.Rc6 Qc6 24.Qc3 Qc3 25.Bc3 f6 26.Nd2 Nc5 (26...d5 27.Bb4 Bb4 28.ab4–/+) 27.Bb4 b6 28.d4 White fights for the Initiative 28...Na4 (28...ed4 29.ed4 Nb3 30.Nb3 Bb3 31.Bd3–/+) 29.Bc4 (29.Ne4!?+=) 29...Kf7 30.Bb5 Nb2 31.Bc3 Nd1 32.Ba1 Bg4 33.h3 Bh5 (better is 33...ed4!? 34.hg4 de3 35.fe3 Ne3=) 34.g4+/- Bg6 35.Bc4 Ke8 36.Bb3 Ne3 37.fe3 Kd8 (37...ed4 38.ed4 h5 39.gh5 Bh5 40.Ba4 Kf7 41.d5+–) 38.Bc3 (38.Bd5 Bd3+–) 38...Be8 (38...ed4 39.ed4 a6 40.Bc4+–) 39.d5 (39.Bd5 Bb5+–) 39...Kc7 40.e4 g6 41.a4 (41.Bc4 Ba4+–) 41...Kb7 (41...Bd7 42.Bc2+/-) 42.Kf2 b5 (42...Bd7 43.Bc2+–) 43.ab5 Bb5 44.Bc4 (44.Nc4 Bd7+–) 44...Bd7 (44...Kb6 45.Be2+–) 45.Bd3+– h5 46.Kg3 hg4 47.hg4 Bd8 48.Bb4 Be7 49.Nc4 Kc7 (49...Bb5 50.Na5 Ka6 51.Bb5 Kb5 52.Nc6+–) 50.Na3 (50.g5 fg5 51.Ne5 Ba4+–) 50...Kb6 51.Nc4?? (51.g5 f5+–) 51...Kc7 52.Ba5 (52.g5 fg5 53.Ne5 de5 54.Be7 a5+–) 52...Kb7 53.Na3 Be8 54.Bb5?? (better is 54.Bd2+–) 54...Bb5= 55.Nb5 Ka6 56.Bd8 (56.Nd6 Bd6 57.Bd8 Kb5–/+) 56...Bd8+= 57.Nd6 Kb6 58.Kf3 a6 59.Ke3 Kc7 60.Nc4 Kd7 61.Nb2 (61.g5 Be7+=) 61...Kd6 (61...Bb6 62.Kd3–/+) 62.Na4 (62.Kd3 Bc7–/+) 62...a5 (62...f5 63.ef5 gf5 64.gf5 Kd5 65.Nc3 Kd6 66.Ne4 Ke7 67.Kd3–/+) 63.Kd3 f5 64.ef5 gf5 65.gf5 Kd5 66.Nc3 Kc6 67.Ke4 Bc7 (67...Bf6 68.Nd5 Bg7 69.Ne7 Kc5 70.Nd5–/+) 68.f6+= Kd7 69.Nd5 (69.f7 Ke7 70.Nd5 Kf7 71.Nc7 a4-+) 69...Bd6 70.f7 (70.Kf5!?+=) 70...Ke6–/+ 71.f8Q? (better is 71.Ne3–/+) 71...Bf8-+ 72.Nc7 Kd7 73.Nb5 Kc6 74.Na3 (74.Nc3-+) 74...Ba3 (74...Ba3 75.Ke5 Bd6 76.Kd4 a4-+) 0–1. Von Herman,Andrea – Rollwitz,Inge, BL2–NO, 1991.

5.a4 a6

6.ba6 Na6 7.Nf3 Qb6 8.Bc3 Nc5 9.a5 Qc7 10.d4 Na6 ( 10...Nce4 11.Qd3 ed4 12.Qd4 Nc3 13.Qc3 Ne4–/+) 11.de5+/- de5 12.Be5 Qe7 13.Be2 Qe6 14.0-0 Ng4 (14...Be7 15.Nbd2+/-) 15.Bb2 Bd6 16.h3 Ne5 17.Nd4 (17.Ng5 Qe7 18.Ne4+/-) 17...Qh6 (17...Qg6 18.Bh5 Qh6 19.Nd2+/-) 18.Bf3 ( 18.f4!?+–) 18...Nf3 19.Qf3 0-0 20.Nf5 Bf5 21.Qf5 Nc5 22.Bd4 Ne6 23.Nd2?? ( 23.Bb6+/-) 23...Nd4-+ 24.ed4 g6?? (24...Qd2!? 25.Rfd1 Qc3 26.Qd7-+) 25.Qd7?? ( 25.Qd3+/-) 25...Rad8 (25...Rfd8 26.Qb7 Qd2 27.Qc6 Qd4 28.a6-+) 26.Qb7 Bf4?? 27.Nf3+– Rfe8 28.a6 Rb8 29.Qc6 Re6 30.Qd5 Reb6 31.a7 R8b7 32.a8Q Rb8 33.Qb8 Rb8 34.Ra8 Qg5 35.Rb8 Bb8 36.Qg5 (36…Bc7 37.Qf6+–; 36.Ng5 Kh8 37.Qf7 Bh2 38.Kh2 h6 39.Qf8) 1–0. MasterofDisaster – Galaxy1, Live Game Caissa's Web, 2004.

6.c4 Bd7 7.Nc3 Be7 8.Nf3 0-0 9.Be2 ab5 10.ab5 Ra1 11.Qa1 cb5 12.Nb5 Bb5 13.cb5 Ne8 14.0-0 Kh8 15.Rc1 Qd7 16.Qa5 f5 17.Qa7 Nf6 18.h3 Ne4 19.d4 Bf6 20.de5 de5 21.Qa2 Re8 22.Rd1 Qc7 23.Qa4 Qb6 24.Rd5 Nc5 25.Qb4 (25.Qc4!? Ncd7 26.Ne5+–) 25...Nbd7+/- 26.Nd2 Be7 (26...Rc8+=) 27.Qc4 (better is 27.Be5 Ne5 28.Re5+/-) 27...Qe6= 28.Nf3? (better is 28.Re5! Ne5 29.Qe6 Ne6 30.Be5=) 28...Nb6-+ 29.Re5?? (29.Rc5 Nc4 30.Rc4-+) 29...Qc4 (29...Nc4?! 30.Re6 Nb2 31.Re5-+) 30.Bc4 Nc4 31.Rf5 Nb2 32.Ne5 Nba4 33.h4 Bh4 34.g4 Bf6 35.Nf3 b6 36.g5 Bd8 37.Ne5 Kg8 38.g6 h6 39.f4 Nc3 40.Kf2 Nb5 41.Nc6 Bf6 42.Rd5 Nc3 43.Rf5 Nd1 44.Ke2 Ne3 45.Rf6 Ng4 (45...Ng4 46.Kf3 Nf6-+) 0–1. Leon Manas,Jose Francisco (1720) – Garcia Rodriguez,Sara (1970), Las Palmas ESP, 2011.

6.c4 Bd7 7.Nc3 (7.d4 e4=) 7...Be7 8.Nf3 (8.d4 ab5 9.ab5 Ra1 10.Qa1 ed4 11.ed4 0-0+=) 8...0-0 9.Be2 d5 (better is 9...ab5!? 10.ab5 Ra1 11.Qa1 Bg4=) 10.Ne5+/- dc4 11.Bc4 Qc7 (11...Be6 12.Be6 fe6 13.Qb3+/-) 12.Nd7 Nbd7 13.Be2 (13.ba6 ba6 14.d4 Nb6+/-) 13...Bd6 (13...ab5 14.ab5 Ra1 15.Qa1+/-) 14.g3 (14.ba6 ba6 15.d4 c5+/-) 14...Rfe8 (14...ab5 15.ab5 Ra1 16.Qa1+/-) 15.0-0+/- Nc5 (15...ab5 16.ab5 Ra1 17.Qa1+/-) 16.d4 Nce4 17.Ne4 Ne4 18.Kg2 (18.ba6 ba6 19.Qc2 Qd7+/-) 18...Ng5 (18...cb5 19.ab5 Qb6 20.Qd3+/-) 19.Qc2 Qd7 (19...ab5 20.ab5 c5 21.Ra8 Ra8 22.Bd3+–) 20.bc6+– bc6 21.Rac1 Rac8 (21...Reb8!? 22.a5+–) 22.Qd1 (22.Ba6 Qh3 23.Kh1-+). Schwichtenberg,Juergen – King,Eberhard, Hessen–ch Seniors, 2001.

6.c4 Bg4 7.Be2 Be2 8.Ne2 ab5 9.ab5 Ra1 10.Ba1 cb5 11.cb5 =.

6.d4 e4 +=.

6.Nf3 Be7 7.Be2 0-0 8.0-0 ab5 9.ab5 Ra1 10.Ba1 Qa5 11.Nc3 Bd7 12.Qb1 Rd8 13.Bd3 h6 14.Re1 Bg4 15.Ne4 Bf3 16.Bc3 Qc7 17.gf3 d5 18.b6 Qc8 19.Ng3 Nbd7 20.Qa1 Qa8 (20...Qb8!?=+) 21.Be5+= Qa1 22.Ba1 Ne5?? (better 22...Bb4+=) 23.Be5+- Nd7 24.Bc7 Ra8 25.e4 Bc5 26.ed5 cd5 27.Nf5 Nb6 28.Bb6 Bb6 29.Ne7 Kf8 30.Nd5 Bd8 (30...Bc5 31.Rb1 Ra7 32.Be4+-) 31.Kg2 Ra5 32.Bc4 b6 33.Rb1 Ra4 (33...Rc5 34.d3+-) 34.d3 Ra7 35.f4 (35.Nb6?! Rb7+-) 35...h5 36.f5 (36.Nb6?! Rb7+-) 36...Ra5 37.Kf3 Kg8 (37...Ra7 38.d4+-) 38.Ke4 Kh7 (38...Ra7 39.d4+-) 39.Nb6 Ra7 40.Nd5 g6 (40...Bc7 41.f4+-) 41.fg6 fg6 42.Rb5 (42.d4 g5+-) 42...Bh4 (42...Ra1 43.Kf3+-) 43.f4 Ra4 (43...Ra1 44.Rb7 Kh6 45.Ne3+-) 44.f5 gf5 45.Kf5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 cb5

6.ab5 Bd7 7.c4 b6 8.Nf3 Bc8 9.Be2 Bb7 10.0-0 Nbd7 11.d4 g6 (better 11...e4!? 12.Nfd2 d5+/-) 12.de5+- de5 13.Ne5 Qe7?? (13...Ne5 14.Be5 Bg7 15.Qd8 Kd8 16.Rd1 Kc8 17.Nc3+-) 14.Nc6 (better 14.Nd7 Qd7 15.Bf6+-) 14...Qd6 (14...Qe6 15.Bf3+-) 15.Qd6 Bd6 16.Rd1 Be7 17.Rd7! Nd7?? (17...Kd7 18.Bf3 Combination; 17...Nd7 18.Bh8 Pinning (18.Bh8 Deflection)) 18.Bh8+- f6 19.Bf3 (worse 19.Na7 Bd6 20.Bg4 Ne5+-) 19...Kf7 (19...a5 20.Nc3+-) 20.Ne7 (20.Bd5 Ke8 21.Ne7 Ke7 22.Bf6 Nf6 23.Bb7 Rd8+-) 20...Ke7 (20...Bf3 21.gf3 Ke7 22.Bg7+-) 21.Bb7 (21.Bf6!? Nf6 22.Bb7 Rd8+-) 21...Rh8 22.Ra7 Ke6 (22...Kd6 23.Nc3 f5 24.f4+-) 23.Bd5 (23.Nc3 Nc5+-) 23...Kd6 24.Nc3 Nc5 (24...f5 25.f4 Nc5 26.Bf3+-) 25.Ne4 (better 25.Rf7 f5+-) 25...Ne4 26.Be4 Ke5 (26...Rc8 27.Bd5 Rc7 28.Ra8+-) 27.Bd5 Rd8 (27...Kd6 28.Rf7 Kc5 29.Rf6+-) 28.f4 Kd6 29.Kf2 (29.Rh7 Rd7 30.Rh6 Rg7+-) 29...Kc5 (29...Rd7 30.Ra8 Kc7 31.e4+-) 30.Rc7 (30.Rh7!? Rf8+-) 30...Kb4 31.Rc6 Ra8 (31...Rb8 32.Rf6 Kc5 33.e4+-) 32.Rb6 Ra2 33.Kf3 f5 34.h3 (34.Ra6!? Rb2+-) 34...Ra3 (34...Ra1 35.Rb7 Kc3 36.Rh7+-) 35.g4 fg4 36.hg4 Kc5 (36...Rb3+-) 37.g5 (better 37.Rc6 Kb4 38.b6+-) 37...Kb6 38.Ke4 Kc5 39.Bg8 Ra7 40.Ke5 Re7 41.Kf6 (41.Be6 Ra7+-) 41...Re3 42.Bh7 Kc4 43.Bg6 Kb5 44.Bf7 Kc6 (44...Ra3 45.g6 Kc5 46.g7+-) 45.g6 Rg3 46.g7 Kd6 47.g8Q Rg8 48.Bg8 Kd7 49.f5 Ke8 50.Kg7 Ke7 51.f6 Kd6 52.f7 Ke5 53.f8Q Kd4 54.Qf6 Kc5 55.Kf7 (55.Qe5 Kb4 56.Qd4 Ka5 57.Qc5 Ka6 58.Be6 Kb7 59.Bc8 Kb8 60.Qc6 Ka7 61.Qb7) 55...Kd5+- 56.Qf4 Kc6 (56...Kc5 57.Ke7 Kb5 58.Qe5 Kb6 59.Kd7 Ka6 60.Bc4 Kb7 61.Qc7 Ka8 62.Bd5) 57.Qe4 (57.Qb4 Kc7 58.Ke7 Kc6 59.Qa5 Kb7 60.Bd5 Kb8 61.Qb6 Kc8 62.Qd8) 57...Kc5 58.Qd3 (58.Kf6 Kb6 59.Qb4 Kc6 60.Qa5 Kb7 61.Bd5 Kc8 62.Qc5 Kd8 63.Be6 Ke8 64.Qe7) 58...Kc6 59.Qd4 Kc7 (59...Kb5 60.Ke6 Kc6 61.Qe5 Kb6 62.Kd7 Ka6 63.Bc4 Kb7 64.Qc7 Ka8 65.Bd5) 60.Qd5 (60.Ke7 Kb7 61.Bc4 Ka8 62.Bd5 Kb8 63.Qb6 Kc8 64.Qd8) 60...Kb6 61.Qc4 Kb7 62.Qc5 Kb8 63.Qe7 Kc8 64.Ke6 (64.Ke8 Kb8 65.Bd5 Kc8 66.Qd8) 64...Kb8 65.Kd6 Ka8 66.Kc6 Kb8 67.Qb7 1-0. BeepBeepImAJeep (2645) - Zanurzony (2125), lichess.org, 2017.

6.ab5 Bd7 7.Nf3 Qb6 8.c4 Be7 9.Be2 0-0 10.0-0 Ne4 11.Qc2+/- Nc5 (11...Nf6!?+/-) 12.Nc3+- a6? (12...Be6+-) 13.Nd5 Qd8 14.d4 Ne6 15.de5 de5 16.Bd3 Bf6 (16...g6 17.Ne5 (17.Be5?! Bc8+-; 17.Ne7?! Qe7 18.Ne5 f6+-) 17...Be8 18.Ne7 Qe7 19.Be4+-) 17.Bh7 Kh8 18.Rfd1 (better 18.Bc3+-) 18...g6 (18...Nc5 19.Ba3 Be7 20.Ne7 Qe7+-) 19.Nf6 Qf6 (19...Nd4 20.ed4 Qf6 21.de5+-) 20.Be5 Kh7 (20...Qe5 21.Ne5 Kh7 22.Nd7 Nd7 23.Rd7 Nc5+-) 21.Bf6 Ng7 22.Qe4 Bf5 23.Ng5 Kg8 24.Qb7 Nd7 25.Rd7 Rfb8 26.Rd8! Rd8 (26...Rd8 27.Qf7 Mate attack) 27.Qf7 Kh8 28.Bg7 (28.Qg7) 1-0. DEFFM – GuestRZYV, freechess.org, 2021.

6.ab5 Bd7 7.Nf3 Be7 8.Be2 h6 9.0-0 Qb6 (9...Bf5 10.d4 Nbd7 11.de5 de5 12.Ne5+/-) 10.c4+/- a6 (10...Bf5 11.d4 Nbd7 12.c5 dc5 13.de5+/-) 11.Nc3 0-0 12.d4 ed4 (12...Bf5 13.de5 de5 14.Ne5+-) 13.Nd4+- 1-0. DEFFM – Renomel, freechess.org, 2021.

6.Bb5 Nc6 7.Nf3 Bd7 8.0-0 Qa5 (8...Be7!?=) 9.d4+= ed4 10.ed4 a6 (10...d5 11.Re1 Ne7 12.c4+/-) 11.Re1 Be7 (11...Be6!?+/-) 12.d5+- Ne5 13.Ne5 de5 14.Re5 Bb5 15.ab5 Qc7 16.b6! Qb6?! (16...Qd7 17.Ba3 Ng8+-) 17.Ba3 Ng4 (17...Ng8 18.Be7 Ne7+-) 18.Re7 Kd8 19.Qg4 Rc8 20.Qd7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 c5

6.c4 b6 7.Qf3 Qc7?? (better is 7...e4 8.Bf6 ef3 9.Bd8 Kd8 10.Nf3 a6+/-) 8.Qa8+– Bb7 (8...Be7 9.a5! a6 10.Bc3+–) 9.Qa7 Be7 10.a5 Kf8 1–0. GuestRXPW – GuestGZVG, freechess.org, 2016.

6.c4 Nbd7 7.Nc3= b6 (7...Be7 8.Nf3=) 8.e4 Bb7 (8...a6 9.Nf3=) 9.d3 Be7 10.g3 Nf8 (10...a6 11.f4+=) 11.Bg2 Ne6 12.Nge2 0-0 13.0-0 Qd7 (13...a6 14.f4=) 14.f4 Nd4 (14...a6 15.Bh3 Qd8 16.Rb1=) 15.Nd4 (15.a5 ba5 16.Ra5 a6=) 15...ed4 16.Nd5 Nd5 17.ed5 Rfe8 18.Qh5 g6 (18...a6 19.Rae1=) 19.Qf3 Bf8 (19...a6 20.Rae1=) 20.Rae1+= Re1 (20...a6 21.Re8 Re8 22.f5=) 21.Re1 Re8 22.Re4 (22.Re8 Qe8 23.Qe4 Qe4 24.Be4 f5+=) 22...Bc8 (22...Be7 23.Bc1+=) 23.Kf2 (23.Bc1 Re4 24.de4 Bg7=) 23...Re7 (23...Bg7 24.Re8 Qe8 25.Bc1=) 24.Qe2 Qe8 (24...Re4 25.de4 Bg7 26.Kg1=) 25.Bc1+= f5 (25...Kg7 26.Re7 Be7 27.Kg1+=) 26.Re7 Be7 27.Bd2 Kf7 28.Bf3 (28.a5 ba5 29.Ba5 a6 30.ba6 Ba6+=) 28...Bd8 (28...a5 29.Bg2+=) 29.h4 (29.Qe8 Ke8 30.h3 a5+=) 29...Qe2 (29...Qd7 30.h5=) 30.Ke2 h5 31.Kd1 Ke8 32.Kc2 Bd7 33.Kb3 Be7 (33...Bc8 34.a5+=) 34.Bc1 (34.a5 ba5 35.Ba5 Bc8+=) 34...Kd8 35.Bd2 (35.Bd1 Bc8+=) 35...Kc8 (35...Ke8 36.a5+=) 36.a5 (36.Kc2 Kb7=) 36...Be8 (36...ba5 37.Ka4=) 37.ab6+= ab6 38.Kc2 Bd8 (38...Bd7 39.Bg2+=) 39.Kd1 Kd7 40.Ke2 (40.Bc1 Bf6+=) 40...Bf7 (40...Bf6 41.Kf1+=) 41.Kf2 (41.Kf1 Bf6+=) 41...Be7 (41...Bf6 42.Bh1+=) 42.Kg2 Bd8 (42...Bg8 43.Kf1+=) 43.Bd1 Kc8 44.Kh3 Be8 ½–½. Pastowski,Werner – Rollwitz,Inge, 02 sen. HSen EM06 (Bad Sooden op), 2006.

6.c4 Be7 7.Be2+=.

6.Ne2 Be7+=.

5.a4 Bd7

6.c4 Qa5 7.Nc3 (7.f4 Ng4 8.Nc3 Be7=) 7...g6 (7...Be7 8.Nf3+=) 8.Nf3= Bg7 9.Be2 cb5 (9...0-0 10.0-0=) 10.ab5 Qd8 (10...Qc7 11.d4+=) 11.h3 (11.d4 Qc7+/-) 11...a6 (11...0-0 12.e4+=) 12.0-0 (12.d4 ed4 13.Qd4 Bf5+/-) 12...h6 (12...0-0 13.d4+=) 13.d3 (13.d4 Qe7+/-) 13...a5 (13...0-0 14.Ba3 Qe7 15.Ne4+=) 14.Qc2 (14.d4 Qe7+/-) 14...b6 (14...0-0 15.Ba3 Qc7 16.d4+=) 15.d4+/- Bf5 (15...Qc7 16.Qd3+/-) 16.e4+– Bd7 (16...Be6 17.de5 de5 18.Ne5+–) 17.de5 de5 18.Ne5 (18.Na4 Be6 19.Rfd1 Nfd7+–) 18...0-0 19.Nd7 (19.Nd3 Be6 20.Rfd1 Qc7+–) 19...Nbd7 (19...Nfd7 20.Rfd1+–) 20.Rfd1 (20.f4 Nc5 21.e5 Nfd7+–) 20...Qe7 (20...Qc7 21.Nd5 Nd5 22.ed5+/-) 21.Bf3 (21.f4 Rfd8 22.e5 Ne8+–) 21...Rac8 (better is 21...Rad8+–) 22.e5 Ne5 (22...Ne5 23.Be2 Combination; 22...Qe5 23.Nd5 Decoy) 23.Bd5 (23.Ba3!? Nf3 24.gf3=) 23...Nc4–/+ 24.Bc4 Rc4 25.Qd3 (25.Ra4 Qe6–/+) 25...Rfc8 (25...Qb4 26.Rdb1–/+) 26.Na4 Qb4?? (better is 26...Qb7–/+) 27.Nb6+/- Qb2 28.Nc4 Qb5 29.Nd6 (better is 29.Na5!? Qd3 30.Rd3+–) 29...Qd3+= 30.Rd3 Rd8 31.Rad1 Kf8 (31...a4 32.Nb5 Rd3 33.Rd3+/-) 32.Nc4 a4?? (better is 32...Ra8+/-) 33.Rd8+– (33.Rd8 Ke7 34.Nb6+–) 1–0. DEFFM – ploh, freechess.org, 2016.

6.c4 d5 7.Be5 Be7 8.Nf3 dc4 9.Bc4 cb5 10.ab5 Be6 (10...0-0 11.Bd4+/-) 11.Be6+- fe6 12.0-0 (12.Qb3!? Qb6+-) 12...0-0+/- 13.d4 Nbd7 14.Bg3 Nd5 15.Qb3 b6? (15...Qb6 16.e4 Nf4 17.Bf4 Rf4 18.Nbd2+-) 16.Nc3 (better 16.e4!? Nb4+-) 16...N7f6 17.Ne5 Bd6 (17...Nc3 18.Qc3 Ne4 19.Qc6+-) 18.Nc6 (18.Nd5 Nd5 19.e4 Nc7+-) 18...Qc7 (18...Qd7 19.Bd6 Qd6 20.Nd5 ed5 21.Rfc1+-) 19.Nd5 Nd5 (19...ed5 20.e4! Bg3 21.fg3 a5+-) 20.Rac1 (better 20.e4 Bg3 21.fg3+- (21.Qg3?! Qg3 22.hg3 Nc3+/-; 21.ed5?! Bh2 22.Kh1 Bf4+-)) 20...Bg3 21.hg3 Qf7 22.e4 Nf6 23.Qe3 a5 24.ba6! Ra6 25.f3 Ra2 (25...Nd7+/-) 26.Rf2?? (better 26.Qb3 Rd2 27.Qb6+-) 26...Nd7?? (better 26...Ng4! 27.Ne5 Rf2 28.Qf2 Nf2 29.Nf7 Ne4 30.Nh6 gh6 31.fe4 b5=) 27.Ra2+- Nf6 28.Rac2 (28.Ra7 Qh5+-) 28...Nh5 (28...Nd7 29.Ne5 Ne5 30.de5+-) 29.Kf2 (better 29.Ne5 Qe7 30.Rc7+-) 29...Qg6 (29...Nf6 30.Ne5 Qe7 31.Rc8+-) 30.g4! Nf4 (30...Qg4 31.Ne7 Double attack (31.Ne7 Decoy)) 31.Ne7 White intends d5 31...Kf7 32.Ng6 Kg6 33.Rc6 h6 34.d5 (34.g3!? Nh3 35.Kg2 Ng5+-) 34...Kh7 35.de6 Ng6 36.e7 Ne5 37.e8Q (37.Qh6! gh6 38.ef8Q Ng6 39.Qf7 Kh8 40.Rc8 Nf8 41.Rf8) 37...Re8+- 38.Rc7 (38.Rh6 Kg8 39.Qb3 Nc4 40.Qc4 Kf8 41.Qb4 Kg8 42.Qb3 Kf8 43.Rc7 gh6 44.Qf7) 38...Ng6 39.Qc3 (39.Qb6 Ne7 40.Qb5 Rd8 41.Re7 Rd2 42.Ke3 Re2 43.Ke2 Kg8 44.Rc8 Kh7 45.Qf5) 39...Rg8 40.Rb7 (40.Qf6 Nh4 41.R1c6 Nf5 42.Qf5 Kh8 43.Rh6 gh6 44.Rh7) 40...Nh4 41.Qb2 (41.Qf6 b5 42.Rc6 Nf5 43.Qf5 Kh8 44.Rh6 gh6 45.Rh7) 41...Ng6 (41...Nf3 42.Rc8! Kg6 43.Rc6 Kh7 44.Qf6 Kh8 45.Qh6 gh6 46.Rh6) 42.Rcc7 Nf4 (42...Ne7 43.Re7 Kh8 44.Rg7 Re8 45.Rgd7 Kg8 46.Qg7) 43.Rg7 Rg7 44.Qg7 1-0. BeepBeepImAJeep (2275) - FranciscoPlesky (1915), lichess.org, 2015.

6.c4 Be7 7.d4 e4 8.Nd2=.

6.d4 ed4 7.ed4 (7.Bd4 d5=) 7...Qb6 (7...Be7 8.Bd3=+) 8.Bd3= cb5 9.ab5 Bb5?? (better 9...Be7 10.c4 0-0=) 10.Qe2+– Be7 (10...Kd7 11.Bb5 Nc6 12.Qd3 Re8 13.Ne2+–) 11.Bb5 Nbd7 12.Nf3 a6 (12...0-0 13.0-0+– (13.Qe7?? Rfe8 14.Qe8 Re8 15.Kd2 Qb5-+)) 13.0-0 Rc8 (13...Rd8 14.Bd7 Rd7 15.c4+–) 14.Bd7 (14.Re1 0-0 15.Bd7 Rc7+–) 14...Nd7 (14...Kd7 15.c4+–) 15.Ba3 Nf6 16.c4 Qc7 (16...Rc7 17.Nbd2+–) 17.Re1 Ng8 (17...Qd7 18.d5+–) 18.Nbd2 Kf8 19.Ne4 Re8 (19...Rb8+–) 20.Nd6! (20.Nd6 Rb8 21.Qe5+–) 1–0. DEFFM – GuestTZSB, freechess.org, 2020.

6.d4 e4 7.c4=+.

6.Nf3 cb5 7.ab5 a6 8.c4 Be7 9.Be2 h6 (9...0-0 10.d4=) 10.0-0 e4 (10...0-0 11.d4 e4 12.Nfd2+=) 11.Nd4+– 0-0 12.Nc3 White fights for the Initiative 12...Be6 13.Qc2 d5 14.f3 dc4 (14...Qd7 15.Ne6 fe6 16.fe4+–) 15.Ne6+– fe6 16.Bc4 Qd7 (16...ef3 17.Be6 Kh8 18.Rf3+–) 17.Ne4 (17.Na4 Qd6 18.Ba3 Qd8 19.Be6 Kh8 20.Be7 Qe7+–) 17...Nd5 18.Bd4 Qc7 19.Qb3 Qd7 20.Nc3 Kh8 (20...Rd8 21.Bd5 ed5 22.e4+–) 21.Nd5 ed5 22.Bd5 Bf6 (22...Rd8 23.e4+–) 23.Bf6 gf6 24.ba6 Ra6 25.Qb7 Qb7 (25...Rd6 26.Qb4+–) 26.Bb7 Ra1 27.Ra1 Nd7 28.d4 Nb6 29.Kf2 Nc4 30.Bd5 Nd6 31.Ra7 Nf5 (31...Rd8 32.Bc6+–) 32.g4 Nh4 (32...Rd8 33.Be4 Nd6 34.Rh7 Kg8 35.Rh6 Ne4 36.fe4+–) 33.Kg3 Ng6 34.Be4 Rg8 35.h4 (35.Rf7 f5 36.Bf5 h5+–) 35...Nf8 36.Rf7 h5 37.d5 hg4 (37...Ng6 38.Rf6 Ne5 39.Rh6 Kg7 40.Rh7 Kf8 41.d6 hg4 42.f4+–) 38.fg4 Ng6 39.h5 Ne5 (39...Rd8 40.hg6 Kg8+–) 40.Rh7 1–0. DEFFM – GuestYBPX, freechess.org, 2020.

6.Nf3 cb5 7.ab5 Qb6 8.c4 a6 9.Nc3 Be7 10.Be2 0-0 11.0-0 Be6 12.d4 ed4 13.Nd4 Nbd7 14.Ne6 fe6 15.Bg4 Ng4 (better 15...Kf7!?+=) 16.Qg4+/- Rf6? (better 16...Kf7 17.Qh5 Kg8+-) 17.Na4+- Qd8 18.Bf6 Bf6 19.Qe6 Kh8 20.Rad1 Nc5 (20...ab5 21.cb5 Nf8+-) 21.Nc5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 Nbd7

6.d4 ed4 7.Bd4 c5 8.Bb2 d5 9.Nf3 b6 (9...Bd6 10.Be2=) 10.c4+= Bb7 11.cd5 Nd5 (11...Bd5 12.Nc3 Bb7 13.Bc4+=) 12.Be2 (12.Bc4 Nb4+=) 12...N7f6 13.0-0 Be7 14.Ne5 0-0 15.Nc6 (15.Nd2!?=) 15...Bc6+= 16.bc6 Qd6 (16...Qc7 17.Qb3+=) 17.Bf3= Rac8 (better is 17...Qe6=) 18.e4+/- Nb4 19.Qd6 Bd6 20.e5 Nd3 21.ed6 (21.ef6?! Nb2 22.Nc3 Be5=) 21...Nb2 22.Nc3 Nd3 (22...Nc4 23.Rfd1 Ne5 24.c7+–) 23.Nb5 White prepares the advance c7 (23.c7!? Ne8 24.d7 Nc7 25.dc8R Rc8+–) 23...Ne5 24.d7?? (24.Na7 Ra8 25.Nb5 Rfc8+–) 24...Ra8?? (better is 24...Nf3 25.gf3 Rc6 26.Na7 Rc7-+) 25.c7?? (better is 25.Rfd1 a6 26.Nc7+–) 25...Nf3= (25...Nfd7?? 26.Ba8 Ra8 27.Na7+–) 26.gf3 Nd7 27.Rfd1 Ne5 28.f4 Nf3 (28...Nc6 29.Rd7+=) 29.Kg2+= Nd4 (29...Nh4 30.Kh3 Ng6 31.f5+/-) 30.Nd4+/- cd4 31.Rd4 Rac8 32.Rc1 (32.Rd7 Rfe8+/-) 32...f6 33.Rd7 (33.f5 Rf7 34.Rd8 Rf8+=) 33...Rf7= 34.Rd8 Rf8 35.Kf3 (better is 35.Rd6+=) 35...Rfd8 36.cd8Q Rd8 37.Rc7 a5 38.Rb7 (38.Ke3 Rb8–/+) 38...Rd4 39.Rb6 Ra4 40.Rb7 h5 41.Ra7 Kh7 42.Kg3 Kh6 43.f3 Ra2 (43...f5 44.Ra8-+) 44.h3 (44.f5 a4-+) 44...a4 (44...g6 45.Ra6 f5 46.Ra8-+) 45.Kh4 (45.f5 Ra3-+) 45...a3 (better is 45...g6!?-+) 46.f5–/+ Ra1 47.Ra6 a2 48.Ra7 (48.Ra8 g5 49.fg6 Kg6–/+) 48...Rf1 49.Ra2 Rf3 50.Ra5 Rf4 51.Kg3 Kg5 52.Rb5? (better is 52.Ra7!? h4 53.Kg2–/+) 52...h4-+ 53.Kg2 Rf5 54.Rb7 g6 55.Rb4 Rc5 56.Rg4 Kf5?? (56...Kh5 57.Rb4-+) 57.Rd4? (better is 57.Rh4 Rc2 58.Kf3–/+) 57...g5-+ 58.Kf3 (58.Rd2 Ke6-+) 58...Rc3 59.Kg2 Ke5 60.Rb4 f5 61.Rb5 Kf4 62.Rb4 Ke3 63.Rb5 Rc2 64.Kf1 Rf2 (64...Kf4 65.Kg1-+) 65.Kg1 Rf4 66.Rb3 Ke2 67.Rb2 Kf3 68.Rb3 Ke4 69.Rb4 Ke5 70.Rb5 Kf6 71.Rb6 Ke5 72.Rb5 Kd6 73.Rb6 Kc5 74.Rg6 g4 75.hg4 (75.Rh6 g3 76.Ra6-+) 75...Rg4 0–1. GuestNCRJ – GuestSXVZ, freechess.org, 2017.

6.d4 e4 7.Nh3 d5 8.Be2 Nb6 9.Nf4 Nc4 (9...g5!? 10.Nh5 Nh5 11.Bh5 Nc4-/+) 10.Bc4= dc4 11.bc6 bc6 12.0-0 Bd6 13.Ba3 Ba3 (13...Bg4 14.Qd2=) 14.Na3+= Ba6 15.Nh5 Nh5 16.Qh5 0-0 17.c3 f5 (17...Qd5 18.Qh4+=) 18.Nc2 Rf6 19.Nb4 Bb7 20.a5 a6 (20...c5!? 21.dc5 Qf8+/-) 21.Qe2+/- Rg6 22.Qc4 Kh8 23.Rfb1 Qg5 (23...Qc7 24.Nd5! Qf7 25.Nb6 Qc4 26.Nc4+-) 24.g3 h5? (24...Qd8+-) 25.Qf7 Bc8 26.Nc6! h4 (26...Rc6 27.Qe8 Double attack (27.Qe8 Decoy)) 27.Ne7 hg3 (27...Be6 28.Ng6 Kh7 29.Nf8 Rf8 30.Qf8 Qh5+-) 28.Qg8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.a4 Be7

6.c4 0-0 7.Nf3 e4 8.Nd4 cb5 (8...c5 9.Nc2+=) 9.ab5= d5 10.Nc3 (10.cd5 Nd5 11.Nc3 Nc3 12.Bc3 Nd7=) 10...dc4 11.Bc4 Nbd7 (11...Bc5 12.Nde2=) 12.0-0 (12.Qc2 Nc5+=) 12...Nc5 (12...Ne5 13.Be2 Bc5 14.Qc2=) 13.Qc2 (13.f3+=) 13...Be6 (13...Bd6!?+=) 14.Ne6+/- Ne6 (14...fe6 15.Ba3 Nd3 16.Ne4 Ne4 17.Bd3+–) 15.Be6 (15.Ne4!? Re8 16.Rfd1+–) 15...fe6+/- 16.Ne4 Ne4 (16...Qd5 17.Bf6 Bf6 18.d4+/-) 17.Qe4 Qd5 18.Qg4 (18.Qd5 ed5 19.Bd4 Bf6 20.Bf6 Rf6+–) 18...Bf6 (18...Rf7 19.Bd4+/-) 19.d4 Qb5 (19...Rfe8 20.Qe2+/-) 20.Qe6 Kh8 (20...Rf7 21.Qa2+/-) 21.Ba3 Rfe8 (21...Qe8 22.Qg4 Rf7 23.Rfd1+/-) 22.Qg4 (22.Qf7 b6+/-) 22...Qg5 (22...a5 23.Rfb1 Qd5 24.Qf3+–) 23.Qf3 (23.Qg5 Bg5 24.Rfb1 b6+–) 23...b6 (23...b5 24.Rfb1+–) 24.Bd6+– Rad8 (24...Qg6!? 25.Bc7 b5+–) 25.Bf4 Qd5 (25...Qf5 26.Ra7 b5 27.Rc1+–) 26.Ra7 Qf3 (26...b5 27.Qd5 Rd5 28.Rb1+–) 27.gf3 Ra8 (27...Rd5 28.Rb1+–) 28.Rb7 Ra6 (28...g5 29.Bg3+–) 29.Rb1 h6 (29...Kg8 30.Bc7+–) 30.R1b6 Rb6 31.Rb6 Kh7 (31...Kg8 32.Rb8 Rb8 33.Bb8+–) 32.d5 Be5 (32...Kg6 33.e4 Kf7 34.Rb7 Kf8 35.Bd6 Kg8 36.Kg2+–) 33.Be5 Re5 34.e4 Re8 (34...Kg8 35.Rb4+–) 35.Kg2 Re7 (35...g5 36.Kg3+–) 36.Kg3 (36.d6 Re8+–) 36...g6 (36...Kg8 37.Kf4 Rd7 38.Ke5+–) 37.Rc6 (37.d6!? Re8+–) 37...Kg7 38.d6 Re6 (38...Re8 39.Rc7 Kf6 40.Re7 Re7 41.de7 Ke7 42.f4+–) 39.Rc7 (better is 39.d7 Rc6 40.d8Q Rf6+–) 39...Kf6 40.d7 (better is 40.Rc5 Re8 41.e5 Kf5 42.f4+–) 40...Rd6 (40...Ke7 41.h4+–) 41.f4 (better is 41.Rc6! Rc6 42.d8Q Kf7 43.Qd7 Kf8 44.Qc6+–) 41...Ke6 (41...Ke7 42.e5 Rd1 43.Kf3+–) 42.f5! gf5 43.ef5 (better is 43.Rc6! Rc6 44.d8Q fe4 45.Kf4+–) 43...Kf5 44.Rc6! Rd7 (44...Rc6 45.d8Q Combination) 45.Rh6 Rg7 (45...Rd3 46.f3+–) 46.Kf3 Rg6?? (46...Rc7 47.Rh5 Kf6 48.h4+–) 47.Rh5 (better is 47.Rg6 Kg6 48.Kf4 Kh5+–) 47...Rg5 (47...Ke6 48.h4+–) 48.Rh7 (better is 48.Rg5 Kg5 49.Ke4+–) 48...Rg6 (48...Kg6 49.Rh4 Rb5 50.Rg4 Kf5 51.Rf4 Kg5 52.h4 Kh5 53.Kg3+–) 49.h4 Kf6 (49...Rb6 50.Rh5 Kg6 51.Rg5 Kf6 52.Rc5+–) 50.Kf4 (better is 50.h5 Rg5 51.Rh6 Ke5 52.Rb6+–) 50...Rg7 (50...Rg2 51.f3+–) 51.Rh6 (51.Rg7 Kg7 52.Kg5 Kh7+–) 51...Rg6 (51...Kf7 52.Kf5+–) 52.Rh8 (better is 52.Rg6 Kg6 53.Kg4+–) 52...Rg2 53.f3 Kg7 (53...Rh2 54.Rh6 Kg7 55.Rh5+–) 54.Rc8 Rh2 55.Kg3 Rh1 56.Rc7 (56.Rc6 Rg1 57.Kh2 Rf1+–) 56...Kg6 57.Rc6 Kh5 58.Rc5 Kg6 (58...Kh6 59.Rg5+–) 59.Rc4 (59.h5 Kh6+–) 59...Kh5 60.Rc5 Kg6 61.Kg4 (61.f4 Rg1 62.Kf2 Rh1 63.Rg5 Kf6+–) 61...Rg1 62.Kf4 Rf1 63.h5 (63.Rg5 Kf6+–) 63...Kh6 64.Kg3 1–0. GuestDLRG – OrangeDoorHinge, freechess.org, 2016.

6.c4 Nbd7 7.Nf3 (7.Nc3 0-0+=) 7...e4 (7...0-0 8.Be2+=) 8.Nd4 c5 (8...Ne5!?–/+) 9.Nf5= Ne5 (9...0-0 10.Ng3=) 10.Ne7 (10.Ng7!? Kf8 11.Be5 de5 12.Nh5=) 10...Qe7+= 11.Be2 0-0 (11...Be6 12.Qc2+=) 12.0-0 b6 (12...h6 13.Nc3=) 13.Nc3= Be6 (13...Bf5 14.Qb3=) 14.Qb3 Rac8 (14...Qc7 15.Qc2 Qb7 16.f3 ef3 17.Bf3 Nf3 18.Rf3=) 15.Nd5 (15.a5!?+=) 15...Bd5= 16.cd5 c4 17.Qc2 Qb7 18.Be5 de5 19.Bc4 Qd5 20.Rac1 (worse is 20.Bd5 Rc2 21.Bc6 a5+=) 20...Qc5 (20...Qd6 21.Rfd1=) 21.Qb3 (21.Rfd1 Qe7=) 21...Kh8 (21...Qe7 22.Rfd1=) 22.Qb2 (22.h3 g6=) 22...Qe7 23.Bb3 h6 (23...Rc1 24.Rc1 g6 25.h3=) 24.Qa2 (24.Rc6 Rc7=) 24...Rc5 (24...Kg8 25.Rc2=) 25.Qa3 (25.Rc5 bc5 26.Qc2 Kg8+=) 25...Nd7 (25...Rfc8 26.h3=) 26.a5 (26.Bd5 f5=) 26...Re8 27.Rc5 Qc5 (27...Nc5!? 28.f3 Qd7 29.ab6 ab6+=) 28.Qc5+/- Nc5 (28...bc5? 29.Bf7 Rd8 30.Rb1+–) 29.Bf7 (29.ab6 ab6 30.Bf7 Rd8+/-) 29...Re7 30.Bd5 (30.Bh5+/-) 30...ba5 (better is 30...Rd7 31.ab6 ab6+=) 31.Rc1+– Rc7 32.Be4! a4 (32...Ne4 33.Rc7 Pinning (33.Rc7 Deflection)) 33.Ra1?? (better is 33.Kf1+–) 33...Nb3?? (better is 33...Ne4 34.g4 Kg8-+) 34.Rf1?? (34.Rd1 Rc1 35.Rc1 Nc1–/+) 34...a3 (better is 34...Nd2 35.Ra1 Ne4-+) 35.Bd5–/+ Rc1?? (better is 35...Nd2 36.Rd1 Rc5–/+) 36.Bb3+– Rf1 (36...Rc5 37.Ra1+–) 37.Kf1 1–0. Didiliuc,Dariana_Gabriela – Chirazica,A_T, CN Juniori Voineasa – F14, 2009.

6.c4 Be6 7.Nf3 0-0 8.Be2 c5 9.d4 e4 (9...ed4 10.ed4 d5 11.Nbd2=) 10.Nfd2 Bf5 (10...d5 11.0-0=) 11.d5 Nbd7 12.Nc3 Re8? (better 12...Qa5+=) 13.g4+- Bg6 14.g5 Ne5? (better 14...Nd5 15.Nd5 Bg5+-) 15.gf6 Bf6 16.Qc2 (better 16.Nde4!? Bh4 17.Rg1 a6+-) 16...Nf3 17.Bf3 ef3 18.Qb3 Qe7 (18...Bh4 19.Nd1+-) 19.0-0-0 (19.Nf3!? Qd7 20.Rg1 Qf5+-) 19...a6 20.Rhg1 ab5 21.Nb5 (21.Nf3?! ba4 22.Qa3 Qd7=) 21...b6 (21...Bb2 22.Kb2 Ra6 23.Rg3+-) 22.Nf3 (better 22.Bf6!? Qf6 23.e4+-) 22...Bb2+/- 23.Kb2 (better 23.Qb2 Ra4 24.Qc3+/-) 23...Qe4?? (better 23...Qf6 24.Kc1 Qf3=+) 24.Nd2 (24.Rg3 Qe7+-) 24...Qe5 25.Qc3 Ra4 (25...Qe7 26.h4! f6 27.Ra1+-) 26.Qe5 de5 (26...Re5?? 27.Nd6 Rh5 28.Nf3+-) 27.Ra1 Rb4 (27...Rea8+-) 28.Kc3 f5 (28...Rd8 29.Na7 Re8 30.Nc6+-) 29.f3 (29.Nc7!? Rd8 30.Na6 Kf7+-) 29...e4 (29...Rd8 30.Nc7 Bf7 31.e4+-) 30.f4 (30.fe4 fe4 31.Nc7 Rf8+-) 30...Re7 (30...Rd8 31.Nc7 Bf7 32.Na6+-) 31.Ra6 (better 31.Nd6 Rf7 32.Nf7 Kf7 33.Ra8+-) 31...Rb7 (31...Rd7 32.Rb6 Bh5 33.Rc6 Rb5 34.cb5+-) 32.Rb1 (better 32.Ra8 Kf7 33.Nd6 Ke7 34.Nb7+-) 32...Rb1 33.Nb1 h6 (33...Kf8 34.Nd6 Rb8 35.Na3+-) 34.h4 (better 34.Ra8 Kh7+-) 34...Bf7 (34...Kf8+-) 35.Nd6 Rd7 36.Nf7 (better 36.Rb6!? Kh8+-) 36...Kf7 37.Rb6 1-0. BeepBeepImAJeep (2575) - coloviczoki (2050), lichess.org, 2017.

6.Bc4 0-0 7.Ne2 d5 8.Bb3 Bd6 9.0-0 Bg4 (9...Nbd7 10.f4=+) 10.f3= Be6 11.f4 ef4 12.Nf4 Qc7?? (better 12...Nbd7=+) 13.Bf6+– gf6 14.Qe1 (better 14.c4!? dc4 15.Ne6 Bh2 16.Kh1 fe6 17.Bc4+–) 14...Kh8 15.Nc3 Rg8 16.a5 Nd7 (16...a6 17.b6 Qe7 18.e4=) 17.a6+– Bf4 (17...b6 18.bc6 Bf4 19.Rf4 Qc6 20.Rd4+–) 18.Rf4 (worse 18.ef4 d4 19.Be6 fe6 20.ab7 Qb7 21.bc6 Qc6+=) 18...Rg4?? (better 18...b6+–) 19.ab7 (19.Rg4 Bg4 20.ab7 Rb8 21.bc6 Qc6 22.Bd5 Qb6+–) 19...Qb7 (19...Rag8 20.Rg4 Rg4 21.Ra7+–) 20.bc6 Qc6 21.Rg4 Bg4 22.Bd5 Qc8 23.Ba8 Qa8 24.Qg3 f5 (24...Be6 25.Nb5 a5+–) 25.h3 Bh5 (25...Qb8 26.Qh4 Ne5 27.Ra6+–) 26.Qd6 Qd8 (26...Qc8 27.Ra7 Qc5 28.Qd7+–) 27.Ra7 Qg8 28.Rd7 Bf3 (28...Kg7 29.Nd5 h6 30.Qe5 Kh7 31.Nf6 Kh8 32.Ng8 Kh7 33.Qf4 Kg8 34.Qh6 Bf3 35.Rd8) 29.Qf6 (29.Qf6 Qg7 30.Rd8) 1–0. onur604 (2320) – Benito3pentolino5 (1935), lichess.org, 2020.

6.Be2 0-0 7.Nf3 Bd7 8.d4 cb5 9.ab5 e4 10.Nfd2 d5 11.c4 Qb6 (11...dc4 12.Bc4 Bd6 13.Nc3=) 12.Nc3 h5 (better 12...dc4!? 13.Bc4 Bf5+=) 13.cd5 h4?? (better 13...Bf5+/-) 14.Nc4+- (14.Nde4?! Ne4 15.Ne4 Re8+-; 14.Nce4?! Ne4 15.Ne4 Rd8+-) 14...Qd8 (14...Qc7 15.Ra7!! Ra7 16.b6 Qc4 17.ba7+-) 15.d6 h3 (15...Re8 16.de7 Re7 17.Ba3+-) 16.de7 Qe7 17.Ba3 (17.Ba3 hg2 18.Rg1+- (18.Be7?! gh1Q 19.Kd2 Qh2+-)) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Nf3 0-0 7.d4 e4 8.Nfd2 d5 9.c4 h6 10.Be2 Nh7 (10...Bf5 11.Nc3=) 11.0-0+= Ng5? (better 11...Nf6!?+=) 12.Nc3+- Nd7? (better 12...Ne6+-) 13.cd5 cd5 14.Nd5 Nb6 (14...Bd6 15.h4 Nh7 16.Ne4+-) 15.Ne7 Qe7 16.Ba3 Qf6 17.Bf8 Kf8 18.a5 (18.h4 Nh7 19.Qc2 Qh4+-) 18...Nd5 19.Qb3 Be6 20.h4 Nf4 (20...Nh7 21.a6 ba6 22.Ra6 Qh4 23.Qa3 Qe7 24.Qe7 Ke7+-) 21.Qb4 (21.hg5?! Ne2 22.Kh1 Qg5 23.Qb4 Kg8=) 21...Qe7 (21...Kg8 22.ef4 (22.hg5?! Ne2 23.Kh1 Qg5=) 22...Nh7 23.b6 ab6 24.ab6+-) 22.Qe7 Ke7 23.ef4 (23.hg5?! Ne2 24.Kh2 hg5+/-) 23...Nh7 24.Ne4 Bd5 25.Nc5 g5 (25...Nf8 26.Rfc1 Rd8 27.Bc4+-) 26.Bd3 Nf6 (26...Nf8 27.Rfe1 Kf6 28.hg5 hg5 29.fg5 Kg7 30.Re7+-) 27.Rfe1 Kf8 (27...Kd6 28.hg5 Nh5 29.gh6 Nf4 30.Be4+-) 28.hg5 hg5 29.fg5 Nh5 30.Be4 Bc4 31.a6 b6 32.Nd7 Kg7 33.Ba8 Bb5 34.Re7 Nf4 35.Ne5 Ne2 36.Kh2 Nd4 37.Rf7 Kg8 (37...Kh8 38.Bd5 Ne6 39.Be6 Bd3 40.g6 Kg8 41.Ra7 Kf8 42.g7 Ke8 43.g8Q) 38.Bd5 (38.Bd5 Be8 39.Rb7 Kf8 40.Rc1 Nc2 41.Rc2 Bf7 42.Rf7 Ke8 43.Rc8) 1-0. DEFFM – GuestHPJM, freechess.org, 2021.

6.Nf3 0-0 7.Be2 a6 8.0-0 ab5 9.ab5 Ra1 10.Ba1 Bd7 11.c4 e4 12.Ne1 d5 13.cd5 Nd5 14.f3 ef3 15.Nf3 cb5 16.Qb3 Bf6 17.Nc3 Increasing the pressure on the isolated pawn on b5 17...Nc3 18.Bc3 Bc3 19.Qc3 (worse 19.dc3 Qe7-/+) 19...Bc6 20.Nd4 Qg5 21.Rf2 g6 (21...Rd8 22.Qb2=) 22.Qb4 Na6?? (better 22...Rc8+=) 23.Qf8!!+- Kf8 24.Ne6 Ke7 25.Ng5 f6 (25...f5 26.Nh7 Nc5 27.Ng5+-) 26.Nh7 Nc5 (26...f5 27.g4 fg4 28.Bg4+-) 27.Rf6 b4 (27...Ne4 28.Rg6 Nd2 29.Rg4+-) 28.Bc4 (better 28.d4!? Ne4 29.Rg6 b3+-) 28...b3 29.Rf7 (better 29.Rg6 b2 30.Ba2 Be4+-) 29...Kd6 (29...Kd8+-) 30.d4 b2 (30...Ne4 31.Bb3 Nd2 32.Rf6 Ke7 33.Re6 Kd8 34.Bc2+-) 31.dc5 Kc5 32.Bd3 Kb4 33.Bg6 Kc3 34.Rc7 Kd2 35.Kf2 Be8 36.Rc2 Kd1 37.Rb2 Bg6 38.Nf6 1-0. onur604 (2320) - maxfreddy (2220), Casual Rapid game, lichess.org, 2021.

6.Nf3 0-0 7.Be2 Bd7 8.0-0 cb5 (8...Qc7 9.Nc3=) 9.ab5 Qb6 (9...a6 10.Nc3=) 10.c4 (10.Nc3 Bf5=) 10...a6 11.d4 e4 12.Nfd2 Bf5 (12...d5 13.c5 Qe6 14.Nc3+=) 13.Nc3 Nbd7 (13...d5 14.cd5 Qd8 15.Qb3+/-) 14.Qc2 (14.g4!? Bg6 15.g5+/-) 14...ab5+= 15.Nb5 Qc6 (15...Rfe8 16.Rfb1 Ra1 17.Ra1+=) 16.d5+/- Nd5?? (better is 16...Qb6+/-) 17.Na7 (better is 17.Nd4 Qb6 18.Nf5+–) 17...Qc7 (17...Qc5 18.Bd4 Qc7 19.Ne4+=) 18.Nb5 (better is 18.Ne4 Nc5 19.Bf3 Ne4 20.Be4 Be4 21.Qe4+/-) 18...Qc8?? (18...Qc6 19.Nd4 Qc7 20.Nf5+– (20.cd5?! Qc2 21.Nc2 Nb6+–)) 19.Na7?? (better is 19.Ra8 Qa8 20.Nd4+–) 19...Qb8 (19...Qc7!?=) 20.cd5+= Ra7 21.Ra7 Qa7 22.Ne4 Bg6 (22...Qa2 23.Bc4 Be4 24.Qe4 (24.Ba2? Bc2 25.Rc1 Bf5-+) 24...Qb2 25.Bd3+= (25.Qe7? Ne5-+)) 23.Qc3 (23.Ra1 Qb8+/-) 23...Ne5 (23...Nf6 24.Ra1 Qb6 25.Ra4+/- (25.Nf6?? Bf6 26.Qd2 Bb2-+)) 24.Ng3 (24.Qb4 Qb8+/-) 24...Bf6 (24...Qb6 25.Qd2 Ra8 26.Bd4+=) 25.Qd2 (better is 25.Qb4+=) 25...b6? (better is 25...Qa2+=) 26.f4+– Nd7 (26...Qa5 27.Qa5 ba5 28.f5+–) 27.Bf6 (27.f5 Qa5 28.Bc1 Be5+–) 27...Nf6 28.f5 Qa5 29.Qa5 (29.Rd1 Re8 30.fg6 fg6 31.Qa5 ba5+–) 29...ba5 30.fg6 hg6 31.Ra1 Ra8 32.Bf3 (32.Bb5 a4+–) 32...Ra7 (32...Kf8 33.Ra3+–) 33.Kf2 Kf8 34.Ne4 Ke7 35.Ra3 (35.Nf6!? gf6 36.g4 a4+–) 35...Nd5 36.Rd3 (36.Nd6 Kd6 37.Rd3 a4+–) 36...Nb4+/- 37.Rd6 (37.Rd4 Ra6+/-) 37...a4 38.Rd1 a3 39.Nc3 Rc7 (39...Ke6 40.Rd2+/-) 40.Nd5+– Nd5 41.Bd5 Rd7 (41...Kf6 42.Kf3+–) 42.e4 f6 (42...Ra7 43.Ke3+–) 43.Ra1 Ra7 44.Ke3 Kd6 ½–½. Larsen,Andreas – Storslett,Roald, NOR–ch M3 Norway, 1997.

6.Nf3 0-0 7.Be2 e4 8.Nd4+=.

6.Nf3 Bd7 7.Be2 0-0 8.0-0 Qe8 9.d4 e4 10.Nfd2 cb5 (10...a6 11.bc6 Nc6 12.c4+=) 11.ab5 Bb5 12.c4 Bd7 (12...Ba6 13.Nc3+=) 13.Nc3+– White prepares d5 13...Bf5 14.Qb3 (14.g4 Bg6 15.g5 Nfd7+–) 14...b6 (14...Nc6 15.f4= (15.Qb7?? Rb8 16.Qa6 Rb2-+)) 15.Nb5 (15.f3!? Nc6 16.Nce4+–) 15...Qd7= 16.d5 a6 (16...a5!?=) 17.Nd4+– Bg6 (17...Bg4 18.Qb6 Be2 19.Ne2+–) 18.Qb6 Bd8 19.Qb3 Qc7 (19...a5!? 20.Qb5+–) 20.Nb5!+– Qd7 (20...ab5 21.Ra8 Pinning (21.Ra8 Deflection)) 21.Bd4 (21.Ra4 a5 22.Qa3 Na6+–) 21...Be7 (21...a5 22.Rfb1+–) 22.Rfb1 (22.Ra5 Rc8+–) 22...Qb7 (22...a5 23.Qc3 Na6 24.Qa5+–) 23.Na7 (23.Qa3 Qd7+–) 23...Qb3 24.Rb3 Nfd7 (24...Rd8 25.Rab1+–) 25.Rb7 Re8? (25...Bf6+–) 26.Nb5! Nc5 (26...ab5 27.Ra8 Pinning (27.Ra8 Deflection; 27.Ra8 Clearance)) 27.Bc5 dc5 (27...Nd7 28.Bd6 Bf8 29.Bf8 Kf8 30.Nd6+–) 28.Nc7 Nd7 29.Ne8 1–0. onur604 (2320) – scaena (1930), lichess.org, 2020.

6.Nf3 e4 7.Nd4 =+.

5.c4 Be6

6.d4 e4 7.bc6 bc6 8.Nc3 =.

6.Nf3 a6 7.Nc3 Be7 8.d4 ed4 9.Nd4 d5 (9...ab5 10.cb5 0-0 11.Bd3=) 10.ba6 Na6 11.Qb3 (11.cd5 Bd5 12.Nf5 0-0=) 11...Nc5= 12.Qc2 Nfe4 (12...0-0=) 13.Bd3?? (better is 13.cd5 cd5 14.Ne6 fe6 15.Ne4 Ne4 16.Bb5 Kf7 17.0-0=) 13...Nd3–/+ 14.Qd3 Nc3 (14...Nc5!? 15.Qc2 dc4–/+) 15.Ne6 Qa5?? (better is 15...fe6 16.Bc3 0-0+=) 16.Bc3+– (16.Bc3 Bb4 17.Nc7 Kd7 18.Nb5 cb5 19.Qd5 Kc7 20.Qe5 (20.Qf7?! Kb6 21.Qe6 Ka7 22.Bb4 Qb4 23.Kf1 Qc3+=) 20...Kc8 21.Bb4 Qb4 22.Kf1 Qc4 23.Kg1+/-; 16.Qc3?? Bb4 17.Ng7 Kf8-+) 1–0. Tiedemann,Joern (1810) – Roentgen,Dave (1625), remoteschach.de, 2006.

6.Nf3 h6 7.Nc3 Nbd7 8.d4 e4 9.Nd2 d5 10.cd5 cd5 11.a4 Bb4 12.Qb3 Qa5 13.Be2 Rc8 14.Ndb1 Nb6 15.0-0 0-0 (15...Nc4 16.Rc1 Nb2 17.Qb2+=) 16.Na2 Bd6 17.Bc3 Qa4 18.Qa4 Na4 19.Bb4 Ne8 20.Bd6 Nd6 21.Nb4 Nc3 Attacking the isolated pawn on b5 22.Nc3 Rc3 23.Ra7 Rb3 24.Na2 (24.Ra4 Rb2 25.Re1 Rc8–/+) 24...Nb5 25.Bb5 Rb5 26.Nc3 Rb3 27.Na4? (better is 27.Ne2–/+) 27...Ra3-+ 28.h3 0–1. Bouvier,Clement (1665) – Ernouf,Anthony (1890), Montigny le Bretonneux Noel op, 2007.

4.b5 Bd7

5.a4 a6 6.c4 ab5 7.cb5 Be7 8.Nc3 0-0 9.h3 b6 10.Qf3 c6 11.Bd3 e4?? (better is 11...d5 12.Qg3 cb5 13.ab5 Ra1 14.Ba1 Bd6+=) 12.Ne4+/- Ne4 13.Qe4 d5?? (better is 13...f5 14.Qc4 d5+/-) 14.Qh7 1–0. Heini – chessenemy, internet, 2016.

5.a4 Nd5 6.c4 Nb4 7.Qb3 c5 8.bc6 N8c6 9.Bc3 a5 10.Nf3 Bf5 11.Bb4 Nb4 12.Na3 Qf6 13.Rc1 Be7 14.Be2 e4 (14...Qg6!? 15.0-0 0-0=+) 15.Nd4= Bd7 16.Nac2 Nc2 17.Rc2 Rb8 18.0-0 Qg6 19.Rb1 Bh3 (19...0-0!?+=) 20.Qb5+– Kf8 21.Bf1 Bc8? (better 21...Bd8+–) 22.Qa5+– Bd7 23.Qc7 Rd8 24.Rb7 f5 (24...Kg8 25.Nc6 Bc6 26.Qc6+– (26.Qe7?! Re8 27.Rb8 Rb8+–)) 25.Rcb2 (better 25.Nc6 Kf7 26.c5 Qe6 27.Nd8 Rd8+–) 25...Qe8 26.Rb8 (26.Be2!? Bc8 27.Rb8 Kf7+–) 26...Rb8?? (26...Kf7 27.Rd8 Qd8+–) 27.Rb8 1–0. Eisenhauer,Erik – Palmer,Michael, Rheinhessen–ch HT2 op, 1999.

5.a4 Be6 6.Nc3 Nbd7 7.g3 (7.d4 ed4 8.Qd4 d5=) 7...Be7 8.Bg2 Rb8 (8...d5 9.Nge2=+) 9.a5 (9.Nge2 h5=) 9...0-0 10.a6 b6 (10...d5!?=+) 11.Nge2 h6 12.0-0 Re8 13.d4 (13.f4 Nc5+/-) 13...ed4 ( 13...Bc4!?+=) 14.Nd4+/- Ne5 15.f4 Nc4 16.Nc6 Nb2 17.Nd8?? ( 17.Qb1 Qd7 18.Qb2+/-) 17...Nd1-+ 18.Ne6 Nc3 19.Nc7 Rbc8 20.Ne8 Re8 21.Ra3 Ncd5 22.e4 Nc7 23.c4 Ne6 24.Rd3 Nc5 25.Rd4 Ng4 26.e5?? de5-+ 27.fe5 Ne3 28.Re1? Ng2 29.Kg2–/+ Kf8 30.e6 fe6 31.Re6?? Ne6 32.Re4 Nc5 33.h4 Bf6 34.Rf4 Re4 35.Rf5 Rc4 36.Kf3 Rb4 37.g4 Kg8 38.g5 hg5 39.hg5 Bb2 40.g6 Rb3 41.Kf4 Bf6 42.Rd5 Rd3 43.Rd3 Nd3 44.Ke4 Nc5 45.Kd5 Na6 46.ba6 Kf8 47.Kc6 Bd4 48.Kb7 b5 49.Kc6 b4 50.Kd5 b3 51.Kd4 b2 52.Kc5 b1Q 53.Kc6 Qb6 54.Kd7 Qa6 55.Kc7 Qb6 56.Kc8 a5 (57.Kd7 a4 58.Kc8 a3 59.Kd7 a2 60.Kc8 a1Q 61.Kd7 Qd1 62.Kc8 Qg4) 0–1. MasterofDisaster – jones662, Live Game Caissa's Web, 2004.

5.c4 b6 6.Nf3 Be6 7.Be2 Nbd7 (7...a6 8.Ng5=) 8.0-0+= Nc5 (8...a6!?+=) 9.d4+/- ed4 10.Nd4 Nb7 (10...a6 11.Ne6 fe6 12.Bf3+=) 11.Nc6 (better 11.Bf3 Qc8 12.Bc6 Bd7 13.Qf3 Bc6 14.Qc6 Nd7 15.Nf5+-) 11...Bd7?? (11...Qc8+/-) 12.Nc3 (better 12.Nd8 Rd8 13.Bf6 gf6 14.Nc3+-) 12...Bc6+= 13.bc6 Nc5 14.Nd5 Be7 15.a4 0-0 16.a5 ba5 17.Ra5 a6 18.Ra3 a5 19.Qd4 a4 20.Rb1 Nd5?? (better 20...Re8+=) 21.Qg7 (21.cd5?! Bf6 22.Qd2 Bb2 23.Qb2 Rb8+=; 21.Qd5?! Bf6 22.Bd4 Nb3=) 1-0. BeepBeepImAJeep (2595) - majid_ganji (1690), lichess.org, 2017.

5.c4 c6 6.a4 cb5 7.cb5 a6 8.Nc3 ab5 9.ab5 (9.Bb5 Nc6 10.Nge2 Be7 11.0-0 d5 12.d4 e4=; 9.Nb5 Be7 10.d4 Nc6 11.Nf3 0-0 12.Be2 e4=) 9...Ra1 10.Qa1 Be6 (10...d5 11.Nd1 e4 12.Bf6 Qf6=) 11.Nf3 (11.Qa8 b6 12.Nf3 Be7=) 11...b6 (11...Nbd7 12.d4 e4=) 12.Qa8 (12.Be2 Nbd7=) 12...Nbd7 (12...Be7=) 13.Qd8 Kd8 14.Be2 g6 15.0-0 Nc5 (15...Bg7 16.d4+=) 16.Ng5 Bf5?? (better is 16...Bb3+=) 17.Nf7+– Ke8 (17...Ke7 18.Nh8 Bg7 19.d4+–) 18.Nh8 Bd3 (18...Bg7 19.Ra1 Kf8 20.d4 ed4 21.ed4+–) 19.Bd3 (better is 19.Ra1 Bg7 20.Ra8 Ke7 21.Bd3 Nd3+–) 19...Nd3 20.Ba1 (better is 20.Ba3 Bg7 21.Bd6 Bh8+–) 20...Ng4 (20...Bg7 21.Ng6! hg6+–) 21.Ne4 Bg7 (21...d5 22.f3 Nh2 23.Kh2 de4 24.fe4+–) 22.Ng6! hg6 23.Nd6 Ke7 24.Ne4 (24.Nc8 Ke6+–) 24...Kd7 (24...Nf6 25.Nf6 Bf6 26.f4 ef4 27.Bf6 Kf6 28.g3+–) 25.f3 Nf6 26.Nf6 Bf6 27.f4 e4 (27...Ke6+–) 28.Bf6 1–0. gwarp – Nautiluschess, ICS blitz, 1999.

5.c4 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 Bd7).

5.d4 c6 6.c4 cb5 7.cb5 a6 8.de5 de5 9.Be5 Bb4 10.Bc3 Ba5 11.Qd6 Ne4?? (better is 11...ab5 12.Bb5 Bb5 13.Qe5 Qe7 14.Qb5 Nc6+=) 12.Qe5+– Qe7 13.Qe7 Ke7 14.Ba5 ab5 15.Bb4 Kd8 16.Ba3 Bc6 17.Ne2 Kc7 18.Bb2 Rd8 19.Be5 Nd6 20.Bg7 b4 (20...Bg2 21.Bg2 Rg8 22.Bd4 Rg2 23.Ng3+–) 21.Nd2 Rg8 22.Be5 Ra5 (22...Nd7 23.Bg3 Nc5+–) 23.Bd6 Kd7 24.Nc4 Ra6 (24...Rag5 25.Bb4 b5 26.Rd1 Kc7 27.h4+–) 25.Bb4 Rg5 (25...Kc7 26.Bd6 Kd7 27.Rd1+–) 26.a3 (26.Rd1 Kc7 27.Bd6 Kc8+–) 26...Bb5 (26...f6 27.Rd1 Rd5 28.Nd2+–) 27.Rd1 Ke8 (27...Kc7 28.Nd6+–) 28.Nd6 (28.Nd6 Rd6 29.Bd6+–) 1–0. Taulien,Hans_Juergen (2350) – Pieleck,Rudi (1770), remoteschach.de, 2002.

5.d4 ed4 6.ed4 d5 7.Be2 (7.Bd3 Bb4 8.Bc3 Qe7 9.Ne2 a6 10.Bb4 Qb4 11.Nbc3 ab5=+) 7...Bd6 (7...a6 8.ba6 Na6 9.Nf3-/+) 8.Nf3=+ Bf5 9.0-0 h6 (9...0-0 10.Nc3=) 10.c4 0-0 (10...dc4 11.Nbd2=) 11.c5+= Be7 12.Nc3 c6 13.a4 Nbd7 14.Re1 Re8 15.Bd3 Bd3 16.Qd3 Qc7 17.a5 Bf8 18.Re8 (18.a6!?+=) 18...Re8= 19.h3 Ne4 20.a6 ba6? (better 20...b6!? 21.bc6 Qc6+=) 21.bc6+/- Qc6 22.Ra6 (22.Qa6 Qa6 23.Ra6 Nc3 24.Bc3 Ra8+/-) 22...Qc7 23.Nb5 (23.Nd5?! Qb7 24.c6 Qb2 25.cd7 Qf2 26.Kh1 Ng3 27.Kh2 Rd8=) 23…Qf4 1-0. onur604 (2320) - walture (2150), Casual Rapid game, lichess.org, 2021.

5.d4 e4 6.Ne2 d5 (6...Bb5 7.Nd2 d5 8.c4 Bc4 9.Nc4 dc4 10.Nc3-/+) 7.a4 a6 8.Ng3 ab5 9.ab5 Ra1 10.Ba1 Bb4 (10...h5 11.Be2=+) 11.c3=+ Bd6 12.c4 dc4 (12...h5 13.c5 Be7 14.Nc3=+) 13.Bc4= 0-0 14.Nd2 Qe8 15.Qb1 The pressure on e4 grows 15...Bg3 16.hg3 Be6?? (better 16...Bf5+=) 17.Ne4+- Bc4 (17...Ne4 18.Qe4 h6+-) 18.Nf6 gf6 1-0. onur604 (2320) - mahmoudsaleem2765167 (2255), Casual Rapid game, lichess.org, 2021.

5.d4 Qe7 6.de5 de5 7.Nf3 e4 8.Ne5 a6 (8...c6 9.Nd7 Nbd7 10.Nd2=) 9.ba6 (9.Bc4!?+/-) 9...ba6 10.Bc4 Be6 11.Ba3 c5 12.Nd2 Bc4 (12...Nbd7 13.Bb2=) 13.Ndc4 Qe6 14.Qb1 (better 14.Qe2=) 14...Bd6?? (14...Nbd7 15.Nd7 Nd7=+ (worse 15...Qc4 16.Nf6 gf6 17.Qb3 Qb3 18.ab3+=; 15...Qd7? 16.Nb6 Rb8 17.Nd7 Rb1 18.Rb1 Nd7 19.Rb7+-)) 15.Nd6+- Qd6 16.Qb7 Qe5?? (better 16...0-0 17.Nc4 Qc6 18.Qc6 Nc6 19.Bc5 Rfb8+/-) 17.Qa8 (better 17.Qc8 Ke7 18.Bc5 Qc5 19.Qc5 Kd8 20.Qb6 Ke7 21.Qb4 Ke6 22.Rd1+-) 17...Qa1-+ 18.Kd2 Qe5 (18...Qh1?! 19.Qb8 Kd7 20.Qh8 Qg2 21.Bc5 Qf2 22.Kc1 Qf1 23.Kd2 Qg2 24.Kc1-/+) 19.Bc5 Nfd7 20.Rb1 Qc5?? (better 20...f5-+) 21.Rb8= Nb8 22.Qb8 Ke7 23.Qh8 Qd5 (23...Qb4 24.Kc1=) 24.Kc1+= Qa2 (24...Qc4 25.Qb8 (worse 25.Qg7 Qf1 26.Kb2 Qb5 27.Kc3 Qa5 28.Kd4 Qb4 29.Kd5 Qb7 30.Kc5 Qb5 31.Kd4 Qb4 32.Kd5 Qb7 33.Kc4 Qb5 34.Kd4 Qb4=; worse 25.Qh7 Qf1 26.Kb2 Qb5 27.Kc3 Qc5 28.Kd2 Qb4 29.Kc1 Qe1 30.Kb2 Qb4 31.Ka1 Qe1 32.Kb2 Qb4 33.Kc1 Qe1 34.Kb2=) 25...Qf1 26.Kb2 Qg2 27.Qb7 Ke8 28.Qa6 Qf2 29.Qa4 Kd8 30.Qd4 Kc7 31.Qg7 Qe3 32.Qf7 Kd6 33.Qf6 Kd5 34.Qd8 Kc6 35.Qa5+=) 25.Qg7+/- Qa3 (25...Qa5 26.Qd4 (26.Qh7?! Qe1 27.Kb2 Qb4 28.Ka1 Qc3 29.Ka2 Qc2 30.Ka3 Qc3 31.Ka4 Qc4 32.Ka3 Qc3 33.Ka4 Qc4 34.Ka3 Qc3=) 26...f5 27.f3 ef3 28.gf3+/-) 26.Kd2 (26.Qb2 Qa5 27.Qb7 Kf8 28.Qe4 Qe1 29.Kb2 Qf2 30.Qh7 Qf6 31.c3 Qb6 32.Kc2 Qe3 33.Qh8 Ke7 34.Qh4 Ke8 35.Qa4 Kf8 36.Qb4 Ke8 37.Qb8 Kd7 38.Qb7 Ke8+-) 26...Qd6 27.Qd4 Qh2 (27...Qg6!? 28.g3 h6+/-) 28.Qe4+- Kf8 29.c4 Qd6 30.Qd4 Qb4 31.Kd3 a5 32.Qd8 Kg7 33.Qg5 Kf8 34.Qd8 Kg7 35.Qd4 Kf8 36.c5 Qb3 37.Ke2 a4 38.Qd8 Kg7 39.Qg5 Kf8 40.Kf3 Qb7 41.e4 Qb3 42.Kf4 Qb8 43.Kf3 (43.Kg4 a3+=) 43...Qb3= 44.Kf4 Qb8 45.Kg4 Qc8 (45...a3!?+=) 46.Kf3+/- a3 47.Qd5 Qb8 48.c6 Qc7 49.Qc5 Kg7 50.Qd4 Kf8 51.Qb4 Kg7 52.Qd4 Kf8 53.Qb4 Kg7 54.Qb7 Qe5 55.c7 Qc3 56.Kg4 a2 57.c8Q Qc8 58.Qc8 a1Q 59.Qc5 Qf6? (better 59...Qd1 60.f3 h6+-) 60.Qg5 Qg5 61.Kg5 f6 62.Kh5 h6 63.g4 Kh7 64.f4 Kg7 65.e5 fe5 66.fe5 Kf7 67.Kh6 Ke6 68.g5 Kf7 69.g6 Kg8 (69...Ke6+-) 70.e6 Kf8 71.g7 Kg8 72.e7 Kf7 73.g8Q Ke7 74.Qd5 Kf6 (74...Ke8 75.Kg5 Ke7 76.Kf5 Kf8 77.Qd7 Kg8 78.Kf6 Kf8 79.Qd8) 75.Qe4 Kf7 76.Qe5 Kf8 77.Kg6 Kg8 78.Qe8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Be2 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Be7 9.Nf3 c6 10.c4 0-0 11.0-0 Qb6 12.Nc3 cb5 13.cb5 Be6 14.Ng5 Bd7 (14...d5 15.Na4 Qc7 16.f4 ef4 17.Bd3 fe3 18.Bf6+=) 15.Qb1+= h6?? (better 15...g6+=) 16.Nd5!!+– Nd5 A deflection (16...hg5 17.Nb6 Be6+–) 17.Qh7 A beautiful mate combination 1–0. DEFFM – GuestNYYN, freechess.org, 2020.

5.Be2 g6 6.Nf3 Bg7 7.0-0 0-0 8.a4 a6 9.c4 ab5 10.ab5 Ra1 11.Ba1 c6 12.Nc3 cb5 13.cb5 b6 14.Qa4 (14.e4 Re8+=) 14...Be6 15.d4 e4 16.Ng5 (16.Nd2 d5=) 16...d5 (16...Bf5 17.f3 ef3 18.Bf3= (worse 18.gf3 Qe7 19.e4 Bd7–/+)) 17.Ne6+= fe6 18.Bb2 Nbd7 (18...Rf7 19.Qc2+=) 19.Ra1 Qc8 20.Na2 Qa8 (20...Ne8 21.Ba3 Rf7 22.Nb4+=) 21.Qa6 Rc8 (21...Qd8!?+=) 22.Nb4+– Qa6 23.ba6 (23.Na6? Rc2 24.Ra2 Re2-+; 23.Ra6?! Kf7+=) 23...Ra8 (23...Bf8 24.Ba3+–) 24.Nc6 (24.a7 Bf8 25.Nc2 b5+–) 24...Bf8? (better 24...Ne8+–) 25.a7+– Bd6 (25...Ne8 26.Ba6+–) 26.Ba6 b5 (26...Ne8 27.Bb7 Nc7 28.Ba8 Na8 29.Rc1+–) 27.Bb7 Ra7 (27...Nb6 28.Ba8 Na8 29.Ra5+–) 28.Na7 (28.Ra7 Nb6+–) 28...Nb6 (28...b4 29.Ra6 Bf8 30.Nc6+–) 29.Nb5 Nfd7 (29...Bb4+–) 30.Nd6 Kg7 1–0. GuestKYJB – Baza, freechess.org, 2020.

5.Nf3 b6 6.d4 e4 7.Nfd2 d5 8.c4 dc4 (8...a6!?=) 9.Bc4+= c6 10.Qb3 Be6? (better 10...Qe7 11.Ba3 c5+/-) 11.Be6+- fe6 12.Qe6 Qe7? (12...Be7 13.bc6 Qd6 14.Qc8 Bd8+-) 13.Qc8 Kf7 (13...Qd8 14.Qb7 Nbd7 15.bc6+-) 14.bc6 Qe8 (14...Nd5 15.Ba3 Qc7 16.Qf5 Nf6 17.d5 Ba3 18.Qe6 Kg6 19.Na3+-) 15.Qb7 Nbd7 16.cd7 Nd7 17.Ne4 Bb4 18.Nbc3 (18.Bc3 Be7+-) 18...a5 (18...Kg6 19.0-0 Rf8 20.Nd5 Qe4 21.Qd7+-) 19.Qd5 Kf8 (19...Ke7 20.Qg5 Kf7 21.Qf5 Kg8 22.a3+-) 20.0-0 Nf6 (20...Rc8 21.Rfd1+-) 21.Nf6 gf6 22.Qf3 Be7 (22...Kg7 23.Nd5 Qd8 24.e4+-) 23.Nd5 Rg8 (23...Rd8+-) 24.Nf6 (better 24.Nc7 Qd7 25.Qa8 Kg7+-) 24…Qg6 1-0. DEFFM – Prettyburd, freechess.org, 2021.

5.a4 c6

6.c4 a6 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 cb5 10.cb5 Qb6 11.Nc3 Be7 12.Be2 0-0 13.0-0 Be6 14.d4 ed4 (14...e4 15.Ng5 d5 16.f3 ef3 17.Bf3=) 15.Nd4 Bd8 16.Ne6 fe6 17.Bc4 (17.e4!?+/-) 17...d5= 18.Be2 Nfd7 (18...Nbd7 19.e4 Qd6 20.ed5=) 19.Na4 (19.e4!? Bh4 20.g3+/-) 19...Qc7 20.Qd4 Bf6 21.Qg4 Ba1? (better 21...Qd6=) 22.Qe6+- (22.Ra1?! Qe5 23.Qd4 Qd4 24.ed4 Rf4+=) 22...Kh8 23.Ra1 Nf6 24.Nb6?? (24.Bd3+-) 24...Nbd7?? (24...Re8 25.Nd5 Qd8= (25...Re6?? 26.Nc7 Rd6 27.Ra8+-)) 25.Nd5 Nd5 26.Qd5 Qc3 (26...Nf6 27.Qc4 Qd7 28.Rc1+-) 27.Rf1 (27.Qd7?! Qa1 28.Qd1 Qf6=) 27...Nf6 (27...Nc5 28.Rd1+-) 28.Qb7 Qd2 (28...Qe5 29.Rc1+-) 29.Bf3 Qd6 30.b6 (30.Rd1 Qb4+-) 30...Qe5? (30...Rb8 31.Qa6 Qb6 32.Qb6 Rb6+-) 31.Qc7 Qc7 32.bc7 Rc8 33.Rc1 (better 33.Rd1 Rc7 34.Rd8 Ng8+-) 33...Ne8 34.Bg4 Rc7 35.Rd1 Re7? (35...g5+-) 36.Rd8 Kg8 37.Bh5 (37.Bd7 Rd7 38.Rd7 h6+-) 37...Kf8? (37...g6 38.Bf3+-) 38.Bd1 (better 38.Be8 Re8 39.Re8 Ke8 40.f4+-) 38...Kf7 39.Bb3 Kf6 40.Ba4 Nd6?? (40...Ra7 41.Rd4 Nc7+-) 41.Rd6 (41.Rd6 Ke5 42.Ra6+-) 1-0. BeepBeepImAJeep (2585) - koko12102000 (1655), lichess.org, 2018.

6.Nf3 b6 7.Be2 (7.Nc3 Be7=) 7...Bg4 (7...Be7 8.0-0=) 8.h3 (8.0-0 a6=) 8...Bf3 (8...Bf5 9.0-0=) 9.Bf3 Be7 (9...e4 10.Be2=) 10.bc6 (10.d3+=) 10...d5 (10...Qc7 11.Nc3 Nc6 12.Nd5 Nd5 13.Bd5+=) 11.d3 (better is 11.Be5!? Nc6 12.Bb2+/-) 11...Nc6= 12.0-0 Nb4 (12...Qc7 13.c4 e4 14.Be2 ed3 15.Qd3=) 13.c3 (better is 13.Be5!? 0-0 14.Nc3+/-) 13...Na6 (13...Nc6 14.c4 Rc8 15.cd5 Nd5 16.Be4+=) 14.c4 Rc8 (14...e4!? 15.Be2 ed3 16.Bd3 Nb4+=) 15.cd5+/- Nd5 (15...Bd6 16.a5! b5 17.Nc3+/-) 16.Be5 (16.a5 b5+/-) 16...f6 (16...0-0 17.Qb3 Ndb4 18.d4+/-) 17.Bd4 (better is 17.Bg3+/-) 17...0-0? (better is 17...Nc5+/-) 18.Qb3+– Nab4 19.e4 (19.Nc3 Rc3 20.Bc3 Kh8+–) 19...Bc5? (19...Kh8 20.ed5 Nc2+–) 20.Bc5 (20.Bb2 Nd3 21.Qd3 Nf4 22.Qb3 Kh8+–) 20...Rc5 21.ed5 (better is 21.d4 Rc8 22.Rd1+–) 21...Nd5 (21...Nc2 22.Ra2 Nd4+–) 22.d4 Ra5 23.Nc3 Rf7 (23...Kh8 24.Bd5 Re8 25.Rfe1+–) 24.Nd5 (24.Bd5!? Rd5 25.Nd5 Kf8+–) 24...Kh8 (24...Kf8 25.Qa3 Kg8 26.Rfe1+–) 25.Nf4 (better is 25.Nb6 Rf8 26.Nc4 Rg5+–) 25...Rf8 (25...Re7 26.Rfe1+–) 26.Ne6 Qe7 (26...Qd6 27.Nf8 Qf8 28.Rfc1+–) 27.Nf8 Qf8 28.Rfe1 h6 (28...g6 29.Rac1 Rf5 30.Rc7 a6 31.Ree7 Rh5 32.Qf7 Qf7 33.Rf7 Kg8 34.Rfd7 Re5 35.Rd8 Re8 36.Re8) 29.Re6 (29.Bc6 Qd6 30.Re8 Kh7 31.Be4 f5 32.Qg8 Kg6 33.Re6 Qe6 34.Qe6 Kh5 35.Bf3 Kg5 36.g3 Ra4 37.h4) 29...Rf5 30.Rae1 Kh7 31.Qc2 g6 32.Be4 (32.Qc7 Kh8 33.Re8 Kg8 34.Rf8 Kf8 35.Qd8 Kf7 36.Re7) 32...Rg5+– 33.Bd3 h5 34.Re7 Kh6 35.Qd2 (35.h4 Qb8 36.hg5 Kg5 37.Rc7 Qa8 38.Qd2 Kg4 39.Qe2 Kh4 40.g3 Kg5 41.Qe3 Kg4 42.Qf4 Kh3 43.Qh4) 35...f5 36.h4 f4 37.hg5 Kg5 38.R1e5 Kg4 Black prepares f3 (38...Kh6 39.R5e6 Qg7 40.Qf4 Kh7 41.Bg6 Kh8 42.Qb8 Qf8 43.Qf8) 39.Be2 (39.f3 Kh4 40.Qf2) 39...Kh4 40.Qd3 f3 (40...Qf5 41.Qf5 gf5 42.Rf5 f3 43.Re4) 41.Qe4 Qf4 42.Qf4 1–0. GuestHYVZ – GuestXJNF, freechess.org, 2016.

6.Nf3 e4 7.Nd4=.

5.a4 Be7

6.Nc3 0-0 7.Be2 (7.Bc4 Bc8 (7...Bg4 8.Be2 Be6 9.Nf3 h6 10.e4 c5 11.0-0 Nbd7 12.d3 Qc7) 8.Qf3 Nbd7 9.Nge2 Nb6 10.Bb3 d5 11.a5 Nc4 12.Bc4 dc4) 7...a5 (7...h6 8.Nf3 Be6 9.e4 c5 10.0-0 Nbd7 11.h3 Qc7 12.d3 d5) 8.Nf3 (8.e4 Be6 9.Nf3 Nbd7 10.d4 ed4 11.Qd4 c5 12.Qd2 Ne5) 8...c6 (8...Bf5 9.0-0 Nbd7 10.d3 Nc5 11.d4 ed4 12.Nd4 Bg6) 9.0-0 d5 (better is 9...e4!? 10.Nd4 d5= (10...c5 11.Nb3 Be6 12.d4 ed3) 11.f3 c5 12.Nb3 Bd6; 9...h6 10.e4 Be6 11.d4 Nbd7 12.Qd2 Qc7) 10.Ne5+/- Bf5 (10...Be6 11.f4 Qc7 12.Nd3 Bd6) 11.Nf3 Nbd7? (better is 11...c5+/- 12.Bd3 Ne4; 11...Bg6 12.Rb1 Qd6) 12.bc6 bc6?! (12...Nc5 13.Nd4 Bc8+–) 13.Nd4 c5 (13...Be4 14.Nc6 (14.Ne4?! de4 15.Nc6 Qe8+–) 14...Qe8 15.Ne7 Qe7 16.Ba3+– (16.Ne4?! Qe4 17.Bb5 Rfc8+–)) 14.Nf5 d4 (14...Rb8 15.Bb5+–) 15.ed4 cd4 16.Nb5 Bc5 17.Nfd4 Rb8 (17...Re8 18.Nf5+–) 18.Nc6 Qc7 (18...Qb6 19.Nb8 Rb8+–) 19.Nc7 (19.Nc7 Rb2 20.Nb5+–) 1–0. pierre – bywom, internet, 2010.

6.c4 0-0 7.Nc3 a6 8.Nf3 ab5 9.ab5 Ra1 10.Qa1 c6 11.d4 e4 12.Nd2 d5 13.Be2 Qc7 14.bc6 bc6 15.c5 Be6 16.0-0 Nbd7 17.Rb1 h6 18.Nf1 g5 (18...Bg4 19.Bg4 Ng4 20.f3 ef3 21.gf3=) 19.Bc1 h5 Black prepares the advance g4 20.Qb2 (20.Qa6 Rb8+=) 20...g4 (20...h4 21.Qc2=) 21.Qb7 Qd8? (21...Qb7!? 22.Rb7 Re8=) 22.Bd2 (22.Qc6 Qc8 23.Qa4 Qc7+-) 22...h4 (22...Qa8 23.Qc7 h4+=) 23.Na4 (23.Qc6 Qc8 24.Qb7 Qb7 25.Rb7 Rb8+-) 23...g3? (better 23...Qb8!?=) 24.fg3 hg3 25.Ng3 Ng4? (better 25...Qb8+/-) 26.Qc6+- Bh4 (26...Nb8 27.Qb6 Bh4 28.Qd8 Rd8+-) 27.Nf1 (better 27.Bg4 Bg4 28.Qd5 Bg3 29.hg3 Re8+-) 27...Bf2 28.Kh1 Qh4? (better 28...Nh2 29.Qd6 Ng4 30.Bg4 Bg4+/-) 29.Nb6?? (better 29.Qd6+-) 29...Qh2 (29...Nh2 30.g4 Nf1 31.Kg2 Qg3 32.Kf1 Qg1) 30.Nh2+- Nh2 31.Kh2 (31.Nd7 Bg3+-) 31...Nf6 32.Rf1 (better 32.g3 Kg7 33.Kg2 Rh8+-) 32...Bh4 33.Rf4 Bg5 34.Rf6! Bf6 35.Nd5 Bg7 36.Nf4 (better 36.Ne7 Kh8 37.Qe4 Bh6+-) 36...Bg4 37.Qe4 (37.Qe4 Be2 38.Ne2+-) 1-0. BeepBeepImAJeep (2575) - yjw29 (1835), lichess.org, 2017.

6.c4 0-0 7.Nc3 c6 8.Nf3 c5 9.Be2= d5 (9...Bf5!?=) 10.cd5 a6 (better 10...e4!? 11.Ng5 Nd5 12.Nge4 Be6+/-) 11.Ne5+- Bd6 12.Nc4 Qe7 13.0-0 ab5 14.ab5 Ra1 15.Qa1 Bb5?? (15...Rd8+-) 16.Nb5 Nd5 (16...Ne8+-) 17.Ncd6 Qd6 (17...Rd8 18.Nf5 Qe6 19.Ng7 Qg6+-) 18.Nd6 1-0. BeepBeepImAJeep (2645) - Notebook5 (1705), lichess.org, 2016.

6.c4 0-0 7.Nf3 b6 8.Be2 (8.Nc3 a6=) 8...Bg4 (8...e4 9.Nd4+=) 9.0-0= Nbd7 (9...a6 10.Nc3=) 10.d4+= Rb8 (10...ed4 11.Nd4 Be2 12.Qe2+=) 11.Nfd2 (11.de5!? Bf3 12.ed6 (12.gf3?! de5 13.Qc2 Qc8=) 12...Be2 13.de7 Qe7 14.Qe2+/-) 11...Be2+= 12.Qe2 Qc8 (12...a6 13.Rd1+=) 13.h3 (13.Qf3 a6+=) 13...c6 (13...a5 14.Qf3+=) 14.Nc3 c5 15.Nce4 (15.d5 a6+=) 15...ed4 (15...Ne4 16.Ne4 Qb7 17.Nc3+=) 16.ed4 cd4 (16...d5 17.Nf6 Bf6 18.cd5+/-) 17.Bd4 Re8 (17...Qc7 18.Rfe1+/-) 18.Rfe1 Nc5 (18...Ne4 19.Ne4 Ne5 20.Rac1+=) 19.Qd1 (19.Bf6!? Bf6 20.Nf6 gf6 21.Qf3+/-) 19...Qf5 (19...Nfe4 20.Ne4 Ne4 21.Re4+=) 20.Ng3 Qd3 (20...Qg6+=) 21.Bc5 (21.Nf3 Qc4 22.Nf5 Bf8 23.Bf6 Re1 24.Qe1 gf6+=) 21...dc5= 22.Re3 Qd7 (22...Qg6 23.Qf3=) 23.Qc2 (23.Nde4 Qd1 24.Rd1 Kf8+=) 23...Rbd8 (23...Bd6 24.Nge4 Ne4 25.Ne4=) 24.Nf3 (24.Rd1 Bf8=) 24...Bd6 25.Rd3 (25.Re8 Qe8 26.Re1 Qd7=) 25...Qc7 (25...Qc8 26.Nf1=) 26.Nf1 (26.Nf5 Bf4=) 26...Be5 (26...Bf4 27.Rad1=) 27.Re1 (27.Rd8 Rd8 28.Re1 Bd4=) 27...Rd3 28.Qd3 Qd6?? (28...Rd8 29.Qc2 Bd4 30.N1d2=) 29.Qf5 (better is 29.Ne5 Qd4 30.Qg3+–) 29...Bd4 (29...g6 30.Qc2=) 30.Re8+= Ne8 31.Ng5 Nf6 32.Qc8 Qf8 33.Qc7 h6 34.Nf3 Qa8 35.Nd4 cd4 36.Qd6 Qe4 (36...Ne4!? 37.Qd4 Nc5+/-) 37.Qb8+– Kh7 38.Qa7 d3 39.Qb6 (39.Qf7?? Qe1 40.c5 d2-+) 39...Qc4 40.a5 (better is 40.Qe3+/-) 40...Qc1? (better is 40...Qb4 41.a6 d2 42.Nd2 Qd2+/-) 41.Qd6+– Ne4? (41...Qc4 42.a6 Qd5+–) 42.Qd3 f5 43.a6 Nc5 (43...Qc5 44.Ne3 Qc1 45.Kh2 Qc7 46.g3 Qa7+–) 44.a7 (better is 44.Qf5 g6 45.Qf7 Kh8 46.a7+–) 44...Nd3 0–1. DEFFM – Guessdkji, freechess.org, 2016.

6.c4 0-0 7.Nf3 e4 8.Nd4+=.

6.Be2 a6 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 b6 10.d4 e4 11.Nfd2 d5 12.c4 c6 13.Nc3 Bb4 14.bc6 Bc6 15.Qb3 Bc3 16.Bc3 0-0 17.0-0 dc4 18.Nc4 Exerts pressure on b6 18...b5 (18...Nbd7 19.Bb4 Re8 20.Nd6+/-) 19.Na3 Qd7 20.Nb5 Nd5 21.Bb2 Qb7 22.Ba3 Bb5? (better 22...Rd8+/-) 23.Bf8+- (23.Bf8 Kf8 24.Bb5+-; 23.Qb5?! Qb5 24.Bb5 Rc8+-; 23.Bb5?! Rd8+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Nf3 0-0 7.Be2 Bf5 8.0-0 Nbd7 9.d4 ed4 (9...e4 10.Nfd2=) 10.Nd4+= Bg6 11.c4 d5 12.Nb3 (12.cd5 Nd5 13.a5 Nb4+=) 12...dc4= 13.Bc4 Nb6 14.Be2 Qd1 15.Bd1 Bb1 16.Rb1 Na4 17.Na5 Nb2 18.Rb2 Rab8 19.Bf3 c6 20.bc6 bc6 21.Rb8 Rb8 22.Nc6 Rb7 23.Rc1 h6 24.g3 Kh7 25.Ne5 Rb5 26.Nf7 Rf5 (26...Kg6 27.Be2 Rd5 28.Bc4+=) 27.Be2 Rc5 28.Rc5 Bc5 29.Ne5 a5 30.Bd1 g5 31.Nc6 Bb6 32.Ne7 Bc5 33.Bc2 Kh8 34.Nf5 h5 35.Kg2 Nd5 36.Nd4 (36.h4!? g4 37.Bb3+–) 36...Bd4+= 37.ed4 Kg7 38.Kf3 Nc3 39.Ke3 Kf6 40.Kd3 Nd5 41.Kc4 Nb4 42.Be4 Na2 43.Bc6 Nb4 44.Ba4 Ke6 45.Bb3 Kd6 46.Bd1 h4 47.gh4 gh4 48.Bf3 Nc6?? (better 48...Na2+–) 49.Bc6+– Kc6 50.f4 Kd6 51.f5 h3 (51...Ke7 52.d5 a4+–) 52.Kb5 Ke7 53.d5 Kd6 54.f6 (54.Ka5?! Kd5 55.Kb5 Ke5=) 54...Kd7 55.Ka5 Ke8 56.d6 Kd7 57.f7 (57.f7 Kd6 58.f8Q Ke6 59.Qh6 Ke7 60.Qh3+–) 1–0. Kotula,Konrad (1800) – Szeglowska,Karolina, Polanica Zdroj op–C, 2009.

5.c4 a6

6.a4 ab5 7.ab5 Ra1 8.Ba1 c6 9.Nc3 Be7 10.Nf3 0-0 11.Be2 Qa5 12.0-0 h6 13.Qb3 Be6 14.d4 Nbd7 15.Bb2 Qb6 16.Ra1 ed4 17.Nd4 c5 18.Ne6 fe6 19.Rd1 Ra8 20.h3 Rd8 21.Qc2 Nf8 22.Bf3 Rd7 23.Ne4 Ne4 24.Qe4 d5 25.Qg4 d4 (25...g6!?+/-) 26.ed4+- cd4 27.Rd4 Rd4?? (better 27...Bd6+-) 28.Bd4 e5 (28...Qd4 29.Qd4 g5 30.c5+-) 29.Bb6 (29.Bb6 Kh8 30.Qf5+-) 1-0. BeepBeepImAJeep - magsudrezvan (2000), lichess.org, 2017.

6.a4 ab5 7.ab5 Ra1 8.Ba1 Be7 9.Nf3 0-0 10.d4 e4 11.Nfd2 c6 12.Nc3 d5 13.Qb3 Qa5 14.Bb2 Bb4 15.Be2 (15.bc6 bc6 16.Be2 Bg4=) 15...Be6 (15...dc4!? 16.Nc4 Qb5=+) 16.0-0= Nbd7 (16...Bc3 17.Bc3 dc4 18.Qc2 Qb5 19.Rb1=) 17.c5 (17.Ra1 Bc3 18.Ra5 Ba5+/-) 17...Bc3 (17...Nc5!? 18.dc5 d4=) 18.Bc3+= Qc7 19.Ra1 h6 (19...cb5 20.Bb5 Ng4 21.Nf1+/-) 20.Ra7 (better 20.Ba5 Qc8 21.h3+/-) 20...g6? (20...Nc5!? 21.dc5 d4+=) 21.Qa4 (better 21.bc6!? Qc6 22.Qb7 Qb7 23.Rb7 Rc8+-) 21...Kg7 22.Nb3 (better 22.bc6 Qc6 23.Bb5+/-) 22...g5? (22...Qb8!?+/-) 23.Na5 (23.b6 Nb6 24.cb6 Qb6+-) 23...Rb8 (better 23...cb5 24.Qb5 Ng4+-) 24.bc6 Nf8 (24...b5 25.Rc7 ba4+-) 25.Rb7 Rb7 26.cb7 Ng6 27.c6 Bg4 (27...Nf8 28.Qb4 N8d7 29.cd7 Nd7 30.Bb5+-) 28.Bf1 (better 28.Qb3 Be2 29.b8Q Qb8 30.Qb8 Bg4+-) 28...Be6 (28...Nf8 29.Qb5 Qb8 30.c7 Qc7 31.b8Q Qc3 32.Nb7+-) 29.Nb3 (better 29.Qb3 Qb8 30.c7 Qc7 31.b8Q Qb8 32.Qb8+-) 29...Ng4 30.g3 Nh4 (30...Ne7 31.Bb5 Nc6 32.Bc6+-) 31.Ba5 (31.Be2 Nf3 32.Bf3 ef3+-) 31...Nf3 32.Kg2 Qe7 (32...Qb8 33.Nc5 Nh4 34.Kh1 Nf2 35.Kg1 Nh3 36.Bh3 Nf3 37.Kh1 Bh3+-) 33.b8Q Qf6 34.Be2 (better 34.Qa2!? Qf5 35.Kh1 Ngh2+-) 34...Qf5 (34...Nh4 35.Kh1 Nf2 36.Kg1 Nh3 37.Kh1 Qf2 38.Qe5 Kh7 39.Qe4 de4 40.gh4 Qg1) 35.Qe5 (better 35.Qa3 Nge5 36.Qe5 Ne5 37.de5 Qe5 38.Nc5+-) 35...Nge5 36.de5 (36.Bf3 Qh3 37.Kg1 Nf3 38.Kh1 Qh2) 36...Qh3 37.Kh1 Qh2 0-1. ClayPigeons (2190) - Khuneiei (2130), Rated Bullet game, lichess.org, 2020.

5.Nf3 a6

6.a4 ab5 7.ab5 Ra1 8.Ba1 e4 9.Nd4 c5 10.bc6 Nc6 11.Na3 d5 12.Nab5.

6.a4 ab5 7.ab5 Ra1 8.Ba1 Ne4 9.Bc4 (9.d4 ed4 10.Bd3 Nc5 11.Bd4 Nd3 12.Qd3 c5 13.bc6 bc6+=) 9...Be7 (9...c6 10.bc6 bc6 11.0-0=) 10.0-0 0-0 (10...Nf6 11.Nc3=) 11.d4+= ed4 12.Qd4 Nf6 13.e4 c6 14.Nc3 cb5 15.Nb5 Bb5 16.Bb5 Nc6 17.Qe3 Ng4 (17...d5 18.Bf6 Bf6 19.e5+=) 18.Qf4+/- Nce5 19.Ne5 Ne5 20.Be5 de5 21.Qe5 Bf6 22.Qc5 Qd2 (22...Qc8!? 23.Qc8 Rc8+/-) 23.e5 Bg5 24.Bd3 Qf4?? (better 24...Re8+-) 25.g3 Qe5 (25...Qg4 26.Bh7! Kh7 27.Qf8 Qc4+-) 26.Qe5 (26.Qe5 Bd8 27.Ra1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.a4 ab5 7.ab5 Ra1 8.Ba1 Be7 9.Be2 (9.Bd3 Bc8 10.Nc3 Nbd7 11.0-0 0-0 12.Bb2) 9...c6 (9...0-0 10.Nc3= (10.0-0 h6 11.Nc3 Be6 12.e4) 10...h6 11.Bc4 Bf5 12.0-0; 9...e4 10.Nd4 c5 11.bc6 Nc6 12.Na3) 10.Nc3 c5 (10...cb5 11.Nb5 0-0 12.0-0=) 11.e4 (11.0-0 e4 12.Ng5) 11...0-0 12.Bc4 (12.0-0 Be6+=) 12...Qa5 (12...Bc8 13.0-0=) 13.h3 (13.0-0 h6+=) 13...b6 (13...Bc8!?=) 14.0-0+/- Be6? (better is 14...Bc8!?+/-) 15.Be6+– fe6 16.Ng5 d5 (better is 16...Re8 17.Ne6 Bd8 18.Nd8 Rd8+–) 17.Ne6 de4 (17...d4 18.Nf8 Bf8 19.Nd5+–) 18.Nf8 Kf8 (18...Bf8 19.d3 ed3 20.Qd3+–) 19.Qe2 Nbd7 (19...Qb4 20.Rb1 Qd4 21.Re1+–) 20.Ne4 Ne4 21.Qe4 Qb5 (21...Qd2 22.Qh7 Bf6 23.Qe4+–) 22.Qh7 Nf6 23.Qf5 c4 (23...Qd7 24.Qg5 e4 25.Bc3+–) 24.Re1 c3 (24...Qd7 25.Qd7 Nd7 26.Be5 Ne5 27.Re5+–) 25.Bc3 1–0. Anonymous – zadaqal, internet, 2011.

6.a4 ab5 7.ab5 Ra1 8.Ba1 Bg4 9.h3+= Bh5 10.g4 Bg6 11.Bg2 (11.Nc3 Nbd7+=) 11...Nbd7 12.d4 (12.Nc3 Nc5=) 12...e4 13.Nh4 d5 14.0-0 Bd6 15.c4 c6 (better 15...dc4!? 16.Nc3 Nb6=) 16.bc6+/- bc6 17.Qa4 Qc7 (better 17...Ng4!? 18.Ng6 hg6 19.Qc6 Qb8 20.cd5 Nh2+/-) 18.cd5+- cd5 (18...Nd5 19.Qa8 Nb8 20.Nc3 Nc3 21.Bc3+-) 19.g5 Nh5 (19...0-0 20.gf6 Nf6+-) 20.Qa8 Qb8 21.Qd5 0-0 22.Ng6 hg6 23.Be4 Bh2 (23...Rd8 24.Qc6 Be7 25.h4+-) 24.Kh1 Nb6 25.Qb3 Re8 (25...Nc8 26.Qb8 Bb8+-) 26.Bg6 Ng3 (26...Qc7 27.Bh5 Kf8+-) 27.fg3 Qg3 28.Qf7 (28.Qf7 Kh8 29.Qe8; 28.Qb6?! Qh3 29.Bf7 Kf8 30.Be6 Qf1 31.Kh2 Qe2 32.Kg3 Qe3 33.Kg4 Qe4 34.Kg3 Qe3 35.Kg4 Qe4 36.Kg3 Qe3=) 1-0. DEFFM – Fishstar, freechess.org, 2021.

6.a4 ab5 7.ab5 c6?? 8.Ra8+– cb5 (8...Bg4 9.h3 Bf5 10.Bc4+–) 9.Ne5! de5 (9...Bc6 10.Nc6 bc6 11.Bf6 gf6 12.Qf3+–) 10.Be5 Bc8 11.Rb8 Nd7 12.Bb5 Be7 (12...Ke7 13.Bd7 Qd7+–) 13.Qg4 0-0 1–0. GuestGPPJ – GuestVFYR, freechess.org, 2020.

5.Nf3 c6

6.a4 Qa5 7.Be2 Be7 8.c4. onur604 (2320) – ERFAN_FRo (2045), lichess.org, 2020.

6.a4 a6 7.c4 Be7 8.Nc3 cb5 9.ab5 a5 10.Be2 b6 11.d4 0-0 (11...e4 12.Nd2 d5 13.0-0+/-) 12.de5+/- de5 13.Ne5 Qc7 14.Nd5 Nd5 15.cd5 Bb4 16.Kf1 Qd6 (better 16...Re8!? 17.Nc6 Bd6+/-) 17.Nc6+- (17.Nd7?! Nd7 18.Qd4 f6+/-) 17...Bf5?? (better 17...Nc6 18.dc6 Be6+-) 18.Qd4 (18.Nb4?! Qb4 19.Ba3 Qc3 20.Bf8 Kf8+-) 18...f6 19.Nb4 Nd7 20.Nc6 Nc5 21.Ba3 Rae8 (21...a4 22.Rc1+-) 22.Bc5 (22.Rc1 Qd7 23.Bc5 bc5 24.Qc5 Be4+-) 22...bc5 23.Qd1 Be4 (23...Ra8 24.Bc4 Be4 25.f3+-) 24.Bf3 (24.f3 Bg6 25.Na5 f5+-) 24...Bf3 (24...f5 25.Ra5 f4 26.Be4 Re4 27.ef4 Qf4 28.Ra2+-) 25.Qf3 c4 26.Ra5 (worse 26.Na5 Ra8 27.Qd1 c3+-) 26...c3 (26...f5 27.b6+-) 27.g3 Qc5 28.Kg2 c2 (28...f5 29.Rc1+-) 29.Rc1 Qc3 (29...f5 30.Nd4+-) 30.d6 (better 30.Qf5!? Qc5+-) 30...Qd2 31.Raa1 Ra8 (31...Qd6 32.Rc2 Rf7+-) 32.Ne7 Kh8 33.Ra8 (33.Ra8 Qf2 34.Kf2 h6 35.Rf8 Kh7 36.Qf5 g6 37.Qg6) 1-0. DEFFM – GuestTGGJ, freechess.org, 2021.

6.a4 a6 7.Be2 ab5 8.ab5 Ra1 9.Ba1 cb5 10.0-0 b4 11.d4 (11.Bc4 Qc7 12.Qe2 Nc6=+) 11...e4-/+ 12.Nfd2 d5 13.c4 Qa5 (13...bc3 14.Nc3 Nc6 15.f3 ef3 16.Bf3=+) 14.Nb3 Qa2 15.cd5 Ba4 16.N1d2 Nd5 (16...Bd6 17.Kh1=) 17.Bc4+= Nc3? (17...Nb6 18.Qg4 Nc4 19.Qc8 Ke7 20.Qc4 Na6+/-) 18.Qh5+- Bb3 19.Qf7 (19.Nb3 Kd8 20.Na5 Qa4 21.Bc3 bc3 22.Nb7 Kc7+-) 19...Kd8 20.Nb3 Qa4? (20...b5 21.Be6 Qa6 22.Bc3 bc3+-) 21.Qb7 Nc6 (21...Bd6 22.Nc5 Qc6 23.Bc3 Qb7 24.Nb7 Ke7 25.Nd6 bc3 26.Ne4+-) 22.Be6 Na7 23.Qb8 Ke7 24.Nc5 Qa5 (24...Qe8 25.Qc7 Kf6 26.Qf4 Kg6 27.Bf5 Kf7 28.Bd7 Kg8 29.Bc3 Qf7+-) 25.Qb7 Kf6 26.Qf7 Kg5 27.Qf4 Kg6 (27...Kh5 28.Bg4 Kg6 29.Qf5 Kh6 30.Qh5) 28.Bf7 1-0. onur604 (2320) - shahramtoraby (2120), Casual Rapid game, lichess.org, 2021.

6.a4 cb5 7.ab5 a5 8.Be2 b6 (8...Be7!?+=) 9.0-0+/- h6 (9...Be7 10.d4 e4 11.Nfd2+/-) 10.d4+- e4 11.Nfd2 d5 12.c4 Bf5 13.cd5 Qd5 (better 13...Bb4!?+/-) 14.Nc3+- Qd6? (14...Qb7 15.f3 Bb4 16.Nce4 Nbd7+-) 15.f3 ef3 16.Bf3 Ra7 17.Qb3 (17.Ra4 Bd3 18.Nc4 Bc4 19.Rc4 Rc7 20.Bc6 Kd8+-) 17...Nbd7 (17...Qb4 18.Qa2+-) 18.Nce4 Ne4 19.Be4 (19.Be4 Be6 20.Qd1+-) 1-0. DEFFM – GuestTYSP, freechess.org, 2021.

6.a4 Be7 7.Be2 0-0 8.0-0 cb5 9.ab5 Qb6 10.c4 a6 11.Nc3 Bf5 12.Nh4 Be6 13.d4 ed4 14.ed4 a5 15.d5 Bd7 (15...Bc8!?+/-) 16.Na4+- Qd8 17.c5! dc5? (better 17...Ne8 18.Nf3 dc5+/-) 18.d6+- Bc6 (18...Bd6 19.Qd6 Re8+-) 19.bc6 (19.de7!? Qe7 20.bc6 Nc6+-) 19...Bd6 20.cb7 Ra7 21.Nf5 Rb7 (21...Bf4 22.Qd8 Rd8 23.Rfd1+-) 22.Qd6 Rd7 (22...Qd6 23.Nd6 Rd7+-) 23.Qg3 Nc6 24.Qg7 1-0. DEFFM – guvesl, freechess.org, 2021.

6.a4 h6 7.Be2 a6 8.0-0 ab5 9.ab5 Ra1 10.Ba1 cb5 11.d4 e4 12.Nfd2 d5 13.f3 Bb4 14.fe4= Bd2? (better 14...de4!? 15.d5 Qb6+=) 15.Nd2+/- (15.Qd2?! Ne4 16.Qe1 Nf6=) 15...de4? (15...0-0 16.e5 Ne8 17.Bc3+/-) 16.d5!+- 0-0?? (16...Nd5 17.c4 Double attack (17.Bg7 Pinning; 17.Bg7 Deflection; 17.c4 Decoy; 17.Bg7 Clearance)) 17.Rf6! gf6 (17...Be6 18.Rh6! Qd5+-) 18.Ne4 f5 (18...Bf5 19.Nf6 Kh8+-) 19.Nf6 Kg7 20.Nd7 (20.Qd4 Rg8 21.Ng8 Kf8 22.Qh8 Bc6 23.Nh6 Ke7 24.Bf6 Kd6 25.Nf7 Kd5 26.Bd8 Ke6 27.Qf6 Kd7 28.Qe7 Kc8 29.Nd6) 20...f6 21.Nf8 Qf8 (21...Kf8 22.Qd3 Qe7 23.Bd4+-) 22.d6 Nd7 (22...Nc6 23.Bb5 Nd8 24.Bc3+-) 23.Bb5 Qe8 (23...Qd8+-) 24.Qd4 Ne5 25.Be8 (25.Be8 h5 26.d7 f4 27.d8Q Nf3 28.gf3 Kh7 29.Q4d7 Kh6 30.Qf6) 1-0. DEFFM – GuestKDFV, freechess.org, 2021.

5.Nf3 Be7

6.c4 c6 7.a4 0-0 8.Be2 e4 9.Nd4 c5 10.Nb3 Qc8 11.0-0 Bg4 (11...d5 12.cd5 Nd5 13.f3=) 12.f3+= ef3 13.Bf3 Bf3 14.Qf3 (worse 14.gf3 Qe6=) 14...Qe6 (14...Nbd7!?+=) 15.Qb7+/- Nbd7 16.Na5 Ne5 17.Be5 Qe5 18.Nc3 Rfb8 (18...Ng4!? 19.Rf4 Bg5+/-) 19.Qf3+- Bf8 1-0. DEFFM – GuestYVDV, freechess.org, 2021.

6.Be2 0-0 7.0-0 Qe8 8.a4 a6 9.c4 ab5 10.ab5 Ra1 11.Ba1 d5 12.Ne5+/- dc4 13.Nd7 (13.Bc4?! Bb5 14.Bb5 Qb5=) 13...Nbd7 14.Bc4 Ne4 15.Qc2 Ndc5? (better 15...Nef6+-) 16.d4 Bf6 17.Bb2 (17.dc5?! Ba1 18.Bd3 Ng5+-) 17...Nd7 18.Bd3 Ng5 19.Qc7 Qe6 (19...b6+-) 20.h4 (worse 20.Qb7 Rb8 21.Qc7 Bd8+-) 20...Bd8 (20...Ne4 21.Be4 Qe4 22.Qd7+-) 21.Qb7 Nf3 (21...Nh3 22.gh3 Qh3 23.Qe4+-) 22.Qf3 Bh4 (22...Qb3 23.Bc3+-) 23.Qh5 Nf6 (23...Qh6 24.Qh6 gh6 25.Rc1+-) 24.Qh4 1-0. DEFFM – GuestNZNL, freechess.org, 2021.

6.Be2 0-0 7.a4 h6 8.0-0 c6 9.c4 cb5 10.ab5+= Be6 11.d4 e4 (11...Nbd7 12.Qc2+=) 12.Nfd2+/- d5 13.cd5 Bd5 14.Nc3 b6 (better 14...Bb4!?+/-) 15.Nd5+- Qd5 16.Bc4 (16.f3 Nbd7 17.fe4 Ne4+-) 16...Qf5 (16...Qb7 17.f3 a6 18.Qa4+-) 17.Qb3 (better 17.f3 ef3 18.Rf3+- (18.Qf3?! Qf3 19.gf3 Rd8+-)) 17...Rd8?? (better 17...Bd6+-) 18.Bf7 Kh8 19.f3 ef3 (19...Qh7 20.Qe6 Bb4 21.Ne4+-) 20.Rf3 (20.Nf3 Qe4 21.Ne5 Nbd7+-) 20...Qg5 (20...Qc8 21.e4 Qb7+-) 21.Rg3 Qf5 22.Rf1 Qd7 (22...Qc8 23.Qd3 Nbd7 24.d5+-) 23.d5 (better 23.Qd3 Ng4 24.d5+-) 23...Bd6 (23...Rf8 24.Ne4! Bd8+-) 24.Rf6 Bg3 (24...Bf4 25.ef4 Qf7 26.Rh6 Kg8 27.d6 Qb3 28.Rg7 Kf8 29.Nb3 Rd6 30.Rh8) 25.Rh6 1-0. DEFFM – hemicarkv, freechess.org, 2021.

6.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Bg4 10.0-0 Qd7 11.c4 Ne4 12.d4 0-0 (12...ed4!? 13.Bd4 0-0+=) 13.de5+/- c6 14.Qd4 Nc5?? (better 14...Bf3 15.e6 Bf6 16.ed7 Bd4 17.Bf3 Ba1 18.Be4 Rd8+/-) 15.e6!+- Ne6 (15...Ne6 16.Qg4 Decoy (16.Qg4 Interception); 15...Qe6 16.Qg7 Mate attack; 15...fe6 16.Qg7 Mate attack; 15...Be6 16.Qg7 Mate attack) 16.Qg4 cb5 (16...f5 17.Qh3+-) 17.cb5 f5 18.Qc4 d5 19.Qa2 Kh8 (19...Nc7 20.Rd1 Qe6 21.Qa7+-) 20.Ne5 (20.Rd1 Rd8+-) 20...Qd6 21.Rd1 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nf3 Bg4

6.Be2 e4 7.Nd4 Be2 8.Qe2 d5 9.c4 (9.0-0 c5 10.bc6 Nc6=) 9...c6 (9...Nbd7 10.0-0+=) 10.cd5 cd5 (10...Qd5 11.0-0=) 11.0-0+= Bc5 (11...Bb4 12.a3 Bc5 13.d3+=) 12.f3 (12.d3 Nbd7=) 12...0-0 (12...Nbd7 13.d3=) 13.fe4 (13.d3 Re8=) 13...de4 14.Nb3 Be7 15.Nc3 Nbd7 16.Rf4 (16.Rad1 Bd6=) 16...Bd6+= 17.Rh4 (better is 17.Rf5+=) 17...Ne5 (better is 17...Re8+=) 18.Ne4+/- Nd3?? (better is 18...Ne4 19.Re4 Re8+/-) 19.Nf6+– Qf6 20.Bf6 Nf4 21.ef4 Bf4 22.Qg4 Bh2 (22...g6 23.Qf4 Rfe8 24.Qh6 Re1 25.Re1 Re8 26.Re8) 23.Rh2 g6 24.Rh7! Rfd8 (24...Kh7 25.Qh3) 25.Rh8 1–0. GuestBYJC – GuestDCSP, freechess.org, 2016.

6.Be2 Be7 7.h3 Bf5 8.0-0=.

6.h3 Bh5 7.Be2 Qd7 8.a4 h6 (better 8...Qd8!?=) 9.Ne5+/- Be2 (better 9...de5!? 10.Bh5 Qf5+/-) 10.Nd7+- Bd1 11.Nf6 gf6 12.Kd1 Bg7 13.Nc3 0-0? (better 13...f5+-) 14.Nd5 f5 (14...Nd7+-) 15.Bg7 Kg7 16.Nc7 Nd7 17.Na8 Ra8 18.a5 a6 19.Ke2 Nc5 20.ba6 ba6 21.Rhb1 Ne4 (21...d5 22.Rb6+-) 22.Rb6 h5 (22...d5 23.d3 Ng5 24.Ra4+-) 23.f3 Ng3 24.Kf2 h4 (24...f4 25.ef4 h4 26.Rd6+-) 25.Ra4 Kg8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.h3 Bh5 7.g4 Bg6 8.Nh4 Be7 9.Ng6 fg6 10.g5 Nh5 11.Qf3 Rf8? (better 11...c6+/-) 12.Qb7+- Nd7 13.h4 Rf7? (better 13...Rb8 14.Qd5 Nb6+-) 14.Bc4 Rf8 15.Nc3 Rb8 15...Qc8 16.Qc6 Rb8+-) 16.Qa7 Nc5 (16...Ra8 17.Qb7 Rb8 18.Qg2+-) 17.Bd5 h6 (17...Rf5 18.Bc6 Kf8 19.Nd5+-) 18.Bc6 Kf7 19.Bd5 Ke8 20.Ne4 Ne4 21.Be4 hg5 (21...Kf7 22.Bd5 Ke8 23.a4+-) 22.Bg6 Kd7 23.hg5 (better 23.a4 Nf4 24.ef4 Rf4+-) 23...Rh8 (23...Rb5 24.Bc3 Nf4 25.ef4 Rf4+-) 24.Bh5 Rb5 (24...Rh5 25.Rh5 Qe8+-) 25.Bg4 Ke8 26.Rh8 (26.Rh8 Bf8 27.Qa4 Kf7 28.Qb5 c5 29.Qc6 Qf6 30.Qd7 Qe7 31.g6 Kg6 32.Qf5) 1-0. DEFFM – GuestPTYF, freechess.org, 2021.

5.Nf3 h6

6.a4 Bg4 7.h3+= Bh5 8.g4 Bg6 9.Bg2 c6 10.d4 (10.Nc3 Nd5+=) 10...e4= 11.Nh4 Bh7 12.0-0 Nd5? (12...d5 13.Qe2=) 13.c4 (13.Nf5 h5 14.Nd2 hg4 15.Qg4 Qd7 16.Ng7 Kd8+-) 13...Ne3 (13...Nb6!? 14.bc6 Nc6+=) 14.fe3+= Qh4 15.Qb3 Nd7 16.bc6 (better 16.Nc3!?+=) 16...bc6-/+ 17.Nc3 Rb8 18.Qc2 Can e4 get defended? 18...Qg3 (18...Be7!?=+) 19.Bc1= (19.Ne4 Rb2 20.Qb2 Be4-/+) 19...Qe3?? (better 19...h5 20.gh5 f5=) 20.Be3+- 1-0. DEFFM – Baza, freechess.org, 2021.

6.Be2 c6 7.a4 a6 8.0-0 ab5 9.ab5 Ra1 10.Ba1 cb5 11.d4 (11.Ne1 b4=+) 11...e4=+ 12.Nfd2 d5 13.f3 Qe7 14.fe4 Ne4 15.Ne4 de4 (15...Qe4!? 16.Bh5 g6=) 16.d5+= b6 (better 16...Rg8!?+=) 17.Qd4 f6 (17...Rg8 18.Nc3 Na6 19.Ne4+- (19.Qe4?! Qe4 20.Ne4 f5 21.Bh5 Kd8+/-)) 18.Nd2 (18.Qb6 Qd6 19.Rf6 gf6 20.Bf6 Kf7 (20...Qb6?? 21.Bh5) 21.Qd6 Bd6 22.Bh8 b4+-) 18...Na6?? (better 18...f5+/-) 19.Bh5+- (19.Bh5 Kd8 20.Qb6 Nc7 21.Qb8 Bc8 22.Bg4+-; 19.Ne4 Nc5 20.Bh5 Kd8 21.Nf6 b4+-; 19.Qe4 Nb4 20.Bh5 Kd8+=) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Be2 Bg4 7.h3 Bh5 (7...Bf5 8.0-0+=) 8.g4 (8.Nc3 Nbd7+=) 8...Bg6+= 9.Nh4 Ne4? (better 9...Be4 10.Rf1 Nbd7=) 10.Ng6+- fg6 11.Bd3 d5 12.Be5 (12.Nc3!? Nc3 13.Bg6 Ke7 14.Bc3 Qd6+-) 12...Qe7 13.Bb2 (13.Bd4 Qe6+/-) 13...Nd7+/- 14.Nc3 Qf7? (better 14...Qe6+/-) 15.Ne4+- de4 16.Be4 0-0-0 17.Qf3 Qf3 18.Bf3 Bc5 (18...Nf6 19.d4+-) 19.Bg7 Rh7 20.Bb2 Rf7 (20...Re7 21.d3+-) 21.Be4 Rg8 (21...g5 22.h4+-) 22.Bd5 Rgf8 23.Bf7 Rf7 24.Ke2 Nb6 25.d3 Nd5 (25...Na4 26.Be5+-) 26.c4 Nb4 (26...Nb6 27.a4+-) 27.d4 Bf8 (27...Be7 28.Rhc1+-) 28.Rhc1 c6 (28...a5 29.Bc3+-) 29.a3 cb5 (29...Na6 30.ba6 ba6 31.Rab1+-) 30.cb5 Kb8 (30...Nc6 31.bc6 b6 32.d5+-) 31.ab4 Bb4 (31...Bg7 32.e4 g5 33.e5+-) 32.d5 b6 (32...Rd7 33.e4 h5 34.gh5 gh5 35.Rc4+-) 33.Rc6 Kb7 34.Rac1 Bc5 35.d6 Rd7 36.Be5 a6 37.Rc7 Rc7 38.ba6 Kc8 (38...Ka7 39.dc7 Ka6 40.c8Q Ka5 41.Ra1 Kb5 42.Kd3 Kb4 43.Qa6 Be3 44.Qc4) 39.dc7 h5 (39...Kd7 40.a7 Ke6 41.c8Q Ke5 42.Qh8 Ke6 43.a8Q h5 44.Qc6 Bd6 45.Qf8 hg4 46.Qcd6) 40.a7 hg4 (40...Kd7 41.a8Q Ke6 42.Qc6 Bd6 43.Qd6 Kf7 44.c8Q hg4 45.Rc7) 41.a8Q Kd7 42.c8Q Ke7 43.Qe8 (43.Qab7) 1-0. DEFFM – chessonmobile, freechess.org, 2021.

4.b5 Nbd7

5.a4 c6 6.Nf3 Be7 7.c4 0-0 8.Be2 Qc7 9.0-0 d5 10.d4 e4 11.Ne5 Ne5?? (better 11...Bd6-/+) 12.de5+= Nd7 13.cd5 cd5 14.Qd5 Nb6? (better 14...Nc5 15.Rc1 Bf5+=) 15.Qe4+- Be6 16.Nd2 (16.a5 Nd5+-) 16...Bd5 17.Qg4 (better 17.Qd3 Rad8 18.Bd4+-) 17...Qd7?? (17...Qc2!? 18.Qd4 Rad8+-) 18.Qg3 (better 18.e6 Bf6 19.ed7 Bb2 20.Rab1+-) 18...Qe6 19.Bg4 (19.Rfd1 Rfd8+-) 19...Qg6 20.f4 (20.Bd4 Bb4 21.Rfd1 Bd2 22.Rd2 Nc4+-) 20...Qd3 21.Bd4 (better 21.Rfd1!?+-) 21...Nc4? (21...Qd2 22.Rfd1 Qb4 23.Bb6 Bg2+/-) 22.Nc4+- (22.Nc4 Qc4 23.f5+-) 1-0. BeepBeepImAJeep (2530) - Dangor (2055), lichess.org, 2017.

5.a4 g6 6.c4 Bg7 7.Nc3 a6 8.Nf3 ab5 9.ab5 Ra1 10.Qa1 0-0 11.Be2 Re8 12.0-0 Nc5 13.d4 ed4 14.Nd4 Nfe4 15.Ne4 Ne4 16.Rd1 Bd7 (16...Qf6 17.Bf3=) 17.Bf3 Nc5 18.Bc3 Qa8 19.Qb2 Na4 20.Qc2 Nc3 21.Qc3 Qa7 22.Qb4 Qb6 23.Ne2 Be6 24.Nf4 Ra8 25.Bd5 (25.Ne6 fe6 26.Qb1 Kf7+=) 25...Bd7 26.Qb3 Qc5 27.h3 (27.Nd3 Qa3 28.Qa3 Ra3 29.Bb7 Bg4+=) 27...Ra3= 28.Qc2 c6 29.Be4 (29.bc6 bc6 30.Be4 Be6=) 29...f5 (29...cb5 30.cb5 Qc2 31.Bc2 Bb5 32.Rd6 Ra1 33.Kh2=+) 30.Nd3 Qa7 31.bc6 bc6 32.Bf3 Rc3 33.Qe2 Rc4 34.Nf4 Ra4 35.Rd6 Ra1 36.Kh2 Be5 37.Qc4 The pressure on the isolated pawn grows 37...Kg7 38.Rd2 Ra4? (38...Qc7 39.g3+=) 39.Qd3 (better 39.Rd7 Qd7 40.Qa4+-) 39...Rd4 40.ed4 Bf4 41.g3 Bd2 42.Qd2 Qc7 43.Qe3 Qd6 44.Kg2 (44.Bg2 Be6+=) 44...Qf6 (44...Be6 45.g4=) 45.Qc3+= Kh6 46.Qc5 Kg7 47.h4 h6 48.d5 (48.Kf1 g5+=) 48...cd5= 49.Qd5 Be6 50.Qb7 Bf7 51.Qb1 (51.Bd5 g5=) 51...Qe5 52.Qd1 g5 53.hg5 hg5 54.Be2 Qe4 Black intends g4 55.Bf3 Qe5 56.Qd3 g4 57.Be2 Bd5 58.Kg1 (58.f3 Kf6=) 58...Qa1 59.Bf1 Qe5 60.Qe3 (60.Be2 Kg6=+) 60...Qf6 (60...Qe3 61.fe3 Kf6 62.Bg2=+) 61.Bg2 Bf7 62.Bf1 Qa1 63.Qf4 (63.Qg5 Bg6=) 63...Qf6 64.Bg2 Qg6 65.Kh2 Qf6 66.Qe3 Qh6 67.Kg1 (67.Qh6 Kh6 68.f3 Kg5=) 67...Qf6 68.Qf4 Be6 69.Qe3 Kf7 70.Qf4 Ke7 71.Bf1 (71.Qc7 Ke8=) 71...Qg6 (71...Bd5 72.Bg2 Bg2 73.Qc7 Kf8 74.Qc8 Kg7 75.Qd7 Qf7 76.Qf7 Kf7 77.Kg2=) 72.Qe3 Qf6 73.Qb6 (73.Qf4 Bd5=+) 73...Kf7 74.Qb4 Qe7 75.Qb7?? (better 75.Qd4=) 75...Qb7-+ 76.Bg2 Qb6 77.Kh2 Bd5! 78.Kg1 (78.Bd5 Kf6 Combination) 78...Bg2 (78...Bc4 79.Ba8 Qa5 80.Kg2 Qa8 81.Kg1 Qa1 82.Kg2 Qf1 83.Kh2 Qf2 84.Kh1 Bd5) 79.Kg2 Qc6 80.f3 Qf3 (80...Qc2 81.Kg1 gf3 82.Kf1 Qe2 83.Kg1 Qg2) 81.Kg1 f4 82.Kh2 Qg3 (82...fg3 83.Kg1 Qf2 84.Kh1 Qf1) 83.Kh1 Qf3 84.Kh2 (84.Kg1 Qe2 85.Kh1 Qf1 86.Kh2 g3) 84...g3 (84...Qf2 85.Kh1 Qf1 86.Kh2 g3) 85.Kg1 (85.Kh3 g2 86.Kh4 Qg3 87.Kh5 g1Q 88.Kh6 Qg6) 85...g2 (85...Qf2 86.Kh1 Qf1) 86.Kh2 Qf1 (86...Qf2 87.Kh3 Qg3) 87.Kh3 g1Q 88.Kh4 Qh1 (88...Qg3 89.Kh5 Qfh3) 89.Kg5 Qfg2 (89...Qff3 90.Kf5 Qhh5) 90.Kf5 (90.Kf4 Qf3 91.Ke5 Qf6) 90...Qd5 (90...Qh5 91.Kf4 Qgf3) 91.Kg4 Qhf3 (91...Qhf3 92.Kh4 Qd8) 0-1. BeepBeepImAJeep (2780) – Abdisalimov, lichess.org, 2020.

5.c4 b6 6.Nf3 Bb7 (6...Be7 7.d4 ed4 8.Bd4=) 7.Be2 Be7 8.Nc3 (8.0-0 a6=) 8...0-0 9.0-0 Re8 (9...a6 10.d4=) 10.d4 ed4 (10...a6 11.Qc2=) 11.Nd4 Ne5 (11...a6 12.ba6 Ra6 13.c5 Nc5 14.Bb5=) 12.f3 (12.f4 Ned7+=) 12...d5 (12...a6 13.Nf5=) 13.cd5+= Nd5 14.Nd5 Bd5 15.e4 (15.Nf5 Bc5+=) 15...Bb7 (15...Nc4 16.Bc1 (worse is 16.ed5 Nb2 17.Qc2 Bc5 18.Qb2 Qd5–/+) 16...Bc5 17.Kh1= (worse is 17.ed5 Qd5 18.Rb1 Qd4 19.Kh1 Qd1 20.Bd1 a6–/+)) 16.Qb3 (16.Nf5 Bc5 17.Kh1 c6+=) 16...c5 (16...Bc5 17.Rad1=) 17.bc6 (17.Nf5 Bf8+/-) 17...Nc6 (17...Bc6 18.Kh1 Bc5 19.Rad1+=) 18.Nc6 (18.Nf5 Bc5 19.Kh1 Na5+=) 18...Bc6 19.Rfd1 Bc5 20.Kh1 Qc7 (20...Qg5 21.Bc4 Qg6 22.Rd3=) 21.Qc3 Threatening mate: Qxg7 21...f6 22.Bc4 (22.Rac1 Rad8=) 22...Kh8 23.Bd5 (23.Rd3 Ba4=) 23...Rad8 24.Bc6 Qc6 25.Rd8 (25.Qb3 Qc7=) 25...Rd8 26.e5 (26.Ba3 Qd6 27.Bc5 Qc5 28.Qc5 bc5=) 26...Qd5 (better is 26...Qa4 27.Re1 Bb4= (worse is 27...Qa2 28.ef6 Qf7 29.fg7 Kg8 30.Qc1+/-)) 27.Qb3?? (better is 27.ef6 Kg8 28.Re1+/-) ½–½. Kreuzer – Bullerkotte, 1980.

5.c4 Nc5 6.d4= ed4 (6...Ncd7 7.Nf3 Qe7 8.Be2 e4 9.Nfd2 a6+=) 7.ed4 Ncd7 (7...Qe7 8.Be2 Ne6 9.Nh3 c5=) 8.Nf3 Nb6 (8...a6 9.ba6 ba6=) 9.Nbd2 (9.Be2 Be7=) 9...Bg4 (9...Qe7+=) 10.Be2 Be7 11.0-0 0-0 12.Qc2 Bh5 13.Rfe1 Bg6 14.Bd3 Bd3 15.Qd3 h6 16.a4 a5 17.Ba3 (17.d5+/-) 17...Nh7? (17...Na4 18.Bd6 Nb2 A) worse is 19.Be7 Nd3 20.Bd8 Ne1 (20...Rfd8?! 21.Re7=) 21.Bf6 Nf3 22.Nf3 gf6–/+; B) 19.Qc2 Bd6 20.Qb2+=) 18.Ne4 (18.Qe4 Re8+/-) 18...Bf6 (18...Na4 19.Bd6 Nb2 20.Qc2 cd6 21.Qb2+=) 19.Nf6 Nf6 20.c5 dc5 21.Bc5 Re8 22.Bb6 cb6 23.Qb3 Qd5 24.Qd5 Nd5 25.Kf1 Kf8 26.Re5 Re5 27.Ne5 f6 28.Nd3 (28.Nc4 Rc8 29.Nd6 Rc2 30.Nb7 Ke7–/+) 28...Nc3 (28...Rc8 29.Ne1=) 29.Ra3 (better is 29.Rc1!? Nd5 30.Ke2+/-) 29...Rc8= 30.Ke1 Rc4 (30...Re8!? 31.Kf1 Nb1+=) 31.Nb2+= Ke7?? (better is 31...Rc7+=) 32.Nc4+– (32.Nc4 Nd5 33.Rg3+–) 1–0. mtr – amstel, Caissa's Web, 2001.

5.c4 c6 6.a4 d5 7.Nf3 (7.cd5 cd5 8.Nf3 Bd6 9.Nc3 0-0 10.Be2 Nc5 11.0-0 e4 12.Nd4 Qc7; 7.Na3 Bc5 (7...Bb4 8.Nf3 0-0 9.Qb3 Qe7 10.Nc2 Bd6 11.d4 ed4 12.Bd4 Nc5) 8.Nf3 0-0 9.cd5 cd5 10.Be2 e4 11.Nd4 Ne5 12.0-0 Bg4; 7.Nc3 Bc5 (7...d4 8.ed4 ed4 9.Qe2 Be7 10.Ne4 0-0 11.Bd4 c5 12.Bc3 Ne4) 8.d4 ed4 9.ed4 Bb4 10.Qe2 Kf8 11.Nf3 Ne4 12.Qc2 Qe7) 7...Bd6 (7...e4 8.Nd4 c5 9.Nb3 dc4 10.Bc4 Qc7 11.f3 ef3 12.gf3 Be7) 8.Nc3 (8.bc6 bc6 9.Nc3 Rb8 10.Rb1 dc4 11.Bc4 e4 12.Nd4 Ne5) 8...0-0 9.d4 (9.bc6 bc6 10.cd5 Rb8 11.Qc2 cd5 12.Nb5 Qb6) 9...Qa5 10.Be2 (10.cd5 Bb4 11.Rc1 Nd5 12.Qc2 ed4) 10...Bb4 (10...ed4 11.Nd4 Ne5 12.Nb3 Qb4) 11.Qc2 Ne4 12.Rc1 ed4 13.Nd4 Nc3 14.Bc3 dc4 15.bc6 Ne5 16.0-0 bc6 17.f4 Bc3 18.Qc3 Qc3 19.Rc3 Nd3 20.Rc4 (20.Bd3 cd3 21.Rd1 c5 22.Rc5 Ba6+/-) 20...Ba6? (better is 20...c5 21.Bd3 cd4 22.Rd4 Be6+–) 21.Rc6 (21.Bd3?! Bc4 22.Bc4 c5+–) 21...Nb4 22.Ba6 Nc6 23.Nc6 Rae8 24.Kf2 (24.Na7?! Ra8+/-) 24...Re6 25.Rc1 Rd6 26.Bb5 a6 (26...Rd7 27.e4+–) 27.Ba6 Ra8 28.Bb5 Rd2 29.Kf3 Kf8 30.a5 Rb2 31.Bc4 Rc8 32.Bf7! Rb5 (32...Kf7 33.Ne5 Double attack) 33.Be6 Rc7 34.Rc4 Ke8 35.f5 g6 36.f6 Rb1 37.f7 Kf8 (37...Rf7 38.Bf7 Kf7 39.a6 Rf1 40.Ke4+–) 38.Ne5 Rbb7 (38...Rf7 39.Nf7 Ke7+–) 39.Nd7! Rd7 (39...Rd7 40.Rc8) 40.Rc8 Ke7 41.f8Q Ke6 42.Rc6 Ke5 43.Qf4 Kd5 44.Qe4 1–0. usingprogram – janioligado, internet, 2011.

5.d4 a5 6.a4 e4 7.c4 g6 (7...d5 8.Nd2=) 8.Ne2 Bg7 9.Ng3 0-0 10.Nd2 Re8 11.Qc2 Increases the pressure on e4 11...Qe7 12.Be2 h5 13.h4 b6 14.Ba3 Bb7 15.0-0 (15.Rc1 Rac8=) 15...Rac8 16.Rac1 Nf8 17.Qd1 (17.c5 dc5 18.dc5 Bd5+=) 17...Qd7 (17...N6d7 18.c5 dc5 19.dc5 Nc5 20.Bc5 bc5 21.Nb3=) 18.Bb2 N8h7 (18...Qe7 19.d5=) 19.Kh1 (19.d5 Qe7+=) 19...c5 (19...Qe7 20.d5=) 20.d5+= Rcd8 21.Qc2 Qe7 22.Qc3 Qf8 23.f4 (better 23.Kg1!?+=) 23...ef3 (better 23...Nd5 24.Qg7 Qg7 25.Bg7 Ne3=+) 24.Bf3? (24.Rf3 Ne4 25.Qc2 Bb2 26.Qb2 Nd2 27.Qd2 Qe7-/+) 24...Bc8?? (24...Ne4 25.Be4 Bc3 26.Rc3-+) 25.Rce1? (25.Rfe1=) 25...Bg4?? (25...Ne4 26.Nge4 Bc3 27.Nc3-+) 26.e4?? (26.Qc2 Qe7=) 26...Bf3?? (26...Ne4 27.Nde4 Bc3 28.Bc3 Bf3 29.Rf3-+) 27.Nf3?? (27.Qf3 Ne4 28.Bg7 Ng3 29.Qg3 Kg7=) 27...Ng4?? (better 27...Ne4 28.Ne4 Bc3 29.Bc3 f5-+) 28.Qc2 Bb2 29.Qb2 Ne5 (29...Qe7!?=) 30.Ne5+= Re5 31.Rf2 (better 31.Rf4!?+=) 31...Qe7=+ 32.Ref1?? (better 32.Rf4 Nf6 33.Kh2=+) 32...Qh4-+ 33.Kg1 Qg3 34.Qd2 (34.Rf3 Qg5 35.Rf7 Qe3 36.Kh2 Rf8 37.Rf8 Nf8-+) 34...Rf8 (34...Ng5!? 35.Re2-+) 35.Rf3 Qg4 36.Qh6 (36.Rf4 Qd7-+) 36...Re4 37.Qg7 (37.Rf4 Rf4 38.Qf4 Qf4 39.Rf4-+) 37…Kg7 (37...Kg7 38.Rd3 Re2 39.Rg3 Qg3 40.Rf7 Kf7 41.Kf1 Qg2) 0-1. kasperoff (1710) - Themagic79 (2245), Eastern SuperBlitz Arena, lichess.org, 2019.

5.d4 ed4 6.ed4 (6.Bd4 a6=) 6...Be7 7.Be2 0-0 8.Nf3 c5 (8...d5 9.0-0=+) 9.d5 (9.0-0 Re8=) 9...Nb6 (9...Qa5 10.Bc3 Qa4 11.0-0–/+) 10.c4 (10.Nc3 Re8=) 10...a6 (10...Ne4 11.Nbd2 Nd2 12.Nd2=) 11.ba6 ba6 12.0-0 Bf5 (12...Rb8 13.Qc2=) 13.h3 (13.Bd3 Bd3 14.Qd3 Rb8=) 13...a5 (13...Rb8 14.Bc3=+) 14.Nh4 (14.Nc3 Rb8 15.Qd2 Qd7=) 14...Bd7 15.Nd2 ( 15.Nc3!?=) 15...Na4–/+ 16.Rb1 Nb2 17.Rb2 Rb8 (17...Nd5!? 18.cd5 Bf6=+) 18.Rb8= Qb8 19.Bd3 Qb2 20.Ne4?? (20.Bf5!?=+) 20...Qa2 ( 20...Ne4 21.Be4 Bh4 22.Bh7 Kh7 23.Qh5 Kg8 24.Qh4 Qa2-+) 21.Nf6 (21.Re1!? Ne4 22.Re4 Bh4 23.Rh4–/+) 21...Bf6-+ 22.Qh5 ( 22.Qf3 Bh4 23.Qe4 Bf2 24.Rf2 Qa1 25.Rf1 Qd4 26.Qd4 cd4 27.Rb1-+) 22...g6 23.Qf3? (23.Qh6 Qb3 24.Be2-+) 23...Bh4 24.g3 (24.Qf4 Be7-+) 24...Bg5 25.h4 (25.Rb1 a4-+ (< 25...Bh3 26.g4-+)) 25...Bh6 26.h5 (26…Bg7 27.Rb1-+). MasterofDisaster – buckeye1, Caissa's Web, 2004.

5.d4 Be7 6.Nf3 e4 7.Nfd2 d5 8.c4 c6 (8...dc4 9.Bc4 Nb6 10.Be2=) 9.a4 (9.Nc3 0-0=) 9...0-0 10.Be2 Re8 (10...cb5 11.cb5 Re8 12.0-0=) 11.0-0 a6 (11...cb5 12.ab5 dc4 13.Nc4=) 12.Nc3 Bb4 (12...cb5 13.ab5 dc4 14.Nc4=) 13.Qb3 Bc3 (13...Qa5 14.Ndb1=) 14.Bc3+= Nf8 15.cd5 Nd5 (15...cd5 16.Rfc1+=) 16.Bc4 (16.bc6 bc6 17.Rfc1 Qg5+=) 16...Bf5 (16...Qg5 17.Kh1=) 17.Bb4 (17.Rfc1 ab5 18.ab5 Qd7+=) 17...h5 (17...Ne6 18.Rfc1+=) 18.Ba3 (18.Rfb1 Ne6+–) 18...h4 19.bc6 (19.h3 Qg5 20.Kh2 Red8+–) 19...bc6 20.Qb7 (20.h3 Qf6+=) 20...Qc8 (20...Qg5 A) 21.Ba6 Bc8 22.Qc6 h3-+ (22...Ba6?! 23.Ne4 Qg6 24.Qd5 Bf1 25.Kf1 Ra4 26.Nd6–/+); B) 21.Bd5?! cd5 22.Qd5 Rad8+–; C) 21.Rfd1+=) 21.Rab1 h3 22.Qc8 Rec8 (22...Bc8 23.Rfc1+–) 23.g3 (23.gh3 Ne6+–) 23...Ne6 (23...g5 24.Rb7+=) 24.Rfc1 Ng5 25.Be2 Nf3 (25...Bd7!?+–) 26.Bf3+– (26.Nf3?! ef3 27.Bf3 Bb1 28.Rb1 Rcb8=) 26...ef3 27.e4 Bg6 28.Rb7 Nf6 29.e5 Nd5 (29...Ne4 30.Nf3 Rcb8 31.Rb4+–) 30.Bd6 (30.Nf3 Rcb8 31.Rb8 Rb8 32.Rc6 Rb1 33.Rc1 Nc3 34.Rb1 Bb1+–) 30...Bh5+– 31.Nc4 (31.Nb3 f6+–) 31...Re8 (31...a5 32.Nb6 Nb6 33.Rb6+–) 32.Na5 (32.Nb6 Nb6 33.Rb6 Rec8+–) 32...Rad8 (32...Bg4 33.Rc5+–) 33.Nc6+– Rc8 34.Ra7 Re6 (better 34...Ra8+–) 35.Ra6 Rg6 (35...f6+–) 36.Rc5 Nf4 (36...Rd6 37.ed6 Re8 38.Ne7 Ne7 39.de7 Bg6+–) 37.Ne7 (37.Ne7 Kh7 38.Rc8+–) 1–0. GuestFFHS – GuestDNTF, freechess.org, 2020.

5.Be2 b6 6.Nf3 Bb7 7.0-0 g6 8.c4 Bg7 9.Nc3 0-0 10.Qc2 Re8 11.Ng5 h6 12.Nge4 Ne4 13.Ne4 d5 (13...a6 14.a4=) 14.cd5+= Bd5 15.Nc3 Bb7 16.Bc4 (better is 16.f3+=) 16...Nc5 (better is 16...e4=) 17.Qg6+/- Qf6 18.Qh5 Rab8 (18...Red8 19.Rad1 Rd6 20.f4+–) 19.Rad1 (19.f4 e4 20.Na4 Qe7+–) 19...Re7? (19...Ne6 20.f3+–) 20.d4 (better is 20.f4!? Kh8 21.fe5 Re5 22.Rf6 Rh5 23.Rf7+–) 20...ed4 21.Rd4 Rd7?? (21...Qg5 22.Qg5 hg5 23.Rg4+–) 22.Rf4 (better is 22.Rg4 Kh7 23.Na4+–) 22...Qg5 23.Qg5 (23.Bf7!? Kh8 24.Qg5 hg5+/-) 23...hg5+/- 24.Rf5 g4 (24...Rbd8 25.Rg5 Kh7 26.Rg3+/-) 25.Rg5 (25.Rd1!? Rd1 26.Nd1 Ne6 27.Bg7 Kg7 28.Be6 fe6 29.Rg5 Kf6 30.Rg4 a6 31.Rf4 Kg6 32.ba6 Ba6+–) 25...Kf8 (25...Kh7!?+/-) 26.Rg4+– 1–0. Donadon,Ivan – Arias,Maria Paula (1665), Buenos Aires ARG, 4th Duchamp Open, 2012.

5.Ne2 d5 6.Ng3 g6 7.h4 h5 8.Be2 Bg7 9.Nf1 (9.d4 Qe7=) 9...0-0 10.Nh2 Re8 11.g4 hg4 12.Ng4 Ng4 13.Bg4 Nf6 14.Bf3 d4 15.a4 a6 (15...e4 16.Be2 de3 17.de3 Qd1 18.Bd1=+) 16.Na3 (16.h5 gh5 17.ba6 Ra6=+) 16...ab5 17.ab5 e4 18.Be2 de3 19.fe3 (19.de3 Qd1 20.Rd1=+) 19...Nd5?? (better 19...Qd6 20.Qb1 Ng4-+) 20.Bg7 Kg7 21.h5 (better 21.Nc4 Ra1 22.Qa1 Qf6 23.Qf6 Nf6 24.Kf2=+) 21...Qd6-/+ 22.hg6?? (22.Qb1 Qg3 23.Kd1 Ne3 24.de3 Rd8 25.Kc1 Qe3 26.Kb2 Qe2 27.Qc1-+) 22...Qg3-+ (22...Ra3 23.Ra3 Qg3 24.Kf1-+) 23.Kf1 Bh3 (23...fg6 24.Bh5 Rf8 25.Qf3 ef3 26.Bf3 Ne3 27.Ke2 Qf3 28.Kd3 Nf1 29.Kd4 Rf4 30.Ke5 Qe4) 24.Rh3 Qh3 25.Kg1 Re5 26.Bg4 (26.gf7 Rh8 27.f8Q Rf8 28.Bf3 Rg5 29.Bg4 Qg3 30.Kh1 Rh8 31.Bh3 Rh3) 26...Rg5 (26...Qg3 27.Kf1 Rh8 28.Bh5 Rf5 29.Qf3 Rf3 30.Bf3 Qf3 31.Ke1 Rh1) 27.Kf2-+ Rg4 (27...Qh2 28.Kf1 Rf8 29.Rb1 fg6 30.Qf3 Rf3 31.Ke1 Qf2 32.Kd1 Qf1) 28.Qf1 (28.Qh1 Qg3 29.Ke2-+) 28...Qh2 29.Ke1 Rg1 30.Qg1 (30.c3 Rf1 31.Kf1 Rh8 32.Nc2 Qh1 33.Kf2 Qf3 34.Ke1 Rh1) 30...Qg1 31.Ke2 Qa1 (31...Qg2 32.Ke1 Rh8 33.gf7 Rh1) 32.Nc4 (32.Nb1 Rh8 33.Kf2 Qf6 34.Kg1 Qf3 35.gf7 Rh1) 32...Rh8 33.c3 (33.Kf2 Rh2 34.Kg3 Qg1) 33…Rh2 0-1. SWASTIND (1750) - opperwezen (2650), lichess.org, 2020.

5.Nf3 a6 6.ba6 ba6 7.Nc3+=.

5.Nf3 b6 6.Bc4 (6.Bc3 a6=) 6...Bb7 (6...a6 7.Nc3 ab5 8.Bb5+=) 7.0-0 g6 (7...a6 8.a4=) 8.d4+= d5 (8...e4!? 9.Ne5 d5+=) 9.de5+/- dc4 10.ef6 Qf6?? (better is 10...a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Qa8+/-) 11.Bf6+– (11.Bf6 Nf6 12.Qd4+–) 1–0. Wall,Bill – Ozzz, internet, 1996.

5.Nf3 Nb6 6.Be2 Bd7 7.a4 Be7 8.0-0 Bg4 (8...a5 9.c4=) 9.a5+= Nbd7 10.d4 e4 11.Nfd2 Be2 12.Qe2 d5 13.c4 0-0 (13...c6!?+=) 14.cd5+/- a6 15.Nc3 ab5 (15...Bd6!? 16.ba6 Ra6 17.Ba3 Ra5 18.Nc4+/-) 16.Qb5+- (16.Nce4?! Ne4 17.Ne4 f5+/-; 16.Nde4?! b4 17.Nf6 Nf6=) 16...b6 (16...Ra7 17.Rfc1+-) 17.a6 (17.Nce4?! ba5 18.Ba3 Re8 19.Be7 Re7 20.Nf6 Nf6 21.Ra5 Ra5 22.Qa5 Nd5+-; 17.Nde4?! ba5 18.Ba3 Ne4 19.Ne4 Ba3 20.Ra3 Qe7+/-) 17...Nb8 18.a7 Nbd7 19.Nde4 Ne4 20.Ne4 Qc8 (20...f5 21.Nc3+-) 21.Rfc1 Qb7 (21...Qd8+-) 22.Qd7 Ra7 (22...Bd8 23.Qc6 Qc6 24.Rc6+-) 23.Ra7 Qa7 24.Qe7 Qa2 25.Ba3 b5 (25...Ra8 26.Rc7 Qa1 27.Bc1 Rf8+-) 26.Qf8 1-0. DEFFM – GuestTFNB, freechess.org, 2021.

5.Nf3 Ne4 6.Be2 Ndc5 7.0-0 Bg4 8.a4 f6 (8...a6!?+=) 9.d3+/- Ng5 10.Ng5 fg5?? (better 10...Be2 11.Qe2 fg5+/-) 11.Bg4+- Na4 (11...Be7+-) 12.Ra4 a6 (12...c6 13.c4+-) 13.Qf3 ab5 (13...Qb8 14.ba6 Ra6 15.Ra6 ba6 16.Be5+-) 14.Be6 Ra4 15.Qf7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.h3 g6 6.c4 Bg7 7.Be2 0-0 8.Nf3 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Re8 (11...e4 12.Nd4=+) 12.Nc3 Nc5 13.Qc2 (13.0-0 Be6=) 13...Bf5=+ Black prepares e4 14.Qc1 (better 14.d3!?=+) 14...Nd3-/+ 15.Bd3 Bd3 16.Nd5 (16.Na4 Ne4-/+) 16...Nd5-+ 17.cd5 e4 (better 17...Bb5!? 18.Qc2 Qa8-+) 18.Bg7-/+ ef3 19.Bd4? (better 19.Qc3 Qg5 20.g4-/+) 19...fg2-+ 20.Rg1 Be4 (20...Qh4 21.Qc3 Qh3 22.Qd3-+) 21.f3? (better 21.Qc4-/+) 21...Bf3-+ (21...Bd5?! 22.e4-+) 22.Kf2 Bd5 23.d3 (23.Kg3-+) 23...Qh4 24.Ke2 Qh3 (better 24...Qd4! 25.Re1 Qh4-+) 25.e4 f5 (better 25...Be6-+) 26.Qe3 (26.Qc7 Bf7 27.Kd2-+) 26...Qe3 27.Ke3 (27.Be3 fe4 28.d4 Bc4 29.Kf2 Bf1-+) 27...fe4 28.Rc1 ed3 29.Kd3 Re7 30.Rg1 c5 31.Bf6 (31.bc6 bc6 32.Be3-+) 31...Rf7 32.Bh4 Rf1 33.Rg2 Bg2 34.b6 Rb1 0-1. New_Acrobaticatur (2030) - Arifars17 (2255), sedekah separuh biji kurma Arena, lichess.org, 2019.

5.a4 Be7

6.c4 0-0 7.Nc3 c6 8.Nf3 d5 9.d4 e4 10.Nd2 Nb6 11.Qb3 (11.c5 Nbd7=) 11...Be6 12.a5 Nbd7 (12...dc4 13.Qd1 Nbd5 14.bc6 bc6 15.Bc4=+ (worse 15.Nde4 Ne4 16.Ne4 Bb4 17.Ke2 Re8-+)) 13.a6= Rb8 14.cd5 (14.ab7 Rb7 15.cd5 Nd5 16.Nce4 cb5=+) 14...cd5 (14...Nd5 15.Bc4 Nc3 16.Bc3 Bc4 17.Qc4=) 15.ab7 Rb7 16.Be2 Qb8 17.0-0 Ne8 (17...Bd6 18.h3=) 18.Ba3 Ba3 19.Qa3 Nd6 20.Rfb1 (20.Nb3 Rc8 21.Na5 Nb5 22.Bb5 Rb5 23.Nb5 Qb5+/-) 20...f5 (20...Rc8=) 21.Na4 (21.Nb3!? Nc8 22.Na5+/-) 21...f4 (21...Nb5 22.Bb5 Rb5 23.Qe7=+) 22.Nc5= Nc5 23.dc5 Nf5 (23...Nb5 24.Qa6 Bd7 25.c6+/-) 24.ef4 (24.Qc3!?+=) 24...Qf4=+ 25.Nf1?? (25.Qc3 d4 26.Qb4 e3-/+) 25...d4?? (better 25...Nd4 26.Bh5 Qf2 27.Kh1 Nc2-+) 26.Ng3 (better 26.Qa4!?=) 26...d3-/+ 27.Nf5? (27.Nh5 Qg5 28.Bd1-+) 27...Bf5 (better 27...Rf5 28.Qa6 Re7-+ (28...Qf2?! 29.Kh1 de2 30.Qe6 Rbf7 31.h3 Qc5 32.Kh2-+)) 28.Bf1 Bg4 29.Qa2 Kh8 30.Re1?? (30.c6 Rbf7 31.f3 Bf5=+) 30...Be2 (better 30...d2 31.Reb1 Qf2 32.Kh1 Rd7-+) 31.Re2 de2 32.Qe2 Rb5?? (better 32...Rbf7 33.c6 Qf2 34.Qf2 Rf2-/+) 33.Re1?? (better 33.Qb5 Qf2 34.Kh1+-) 33...Rb2?? (33...Rc5 34.g3 Qf3 35.Qa2-+) 34.Qe3 (better 34.Qb2 Re8 35.Qd4+-) 34...Qe3 35.fe3 Rc8 (35...Rc2 36.Ba6 Rc5 37.Bb7-+) 36.Ba6? (36.Rc1-+) 36...Rc5 37.Rf1 h6 38.Rf8 Kh7 39.Rf1 (39.h4-+) 39...Rc1 (better 39...Rcc2 40.Ra1 Rg2 41.Kf1 Rh2-+) 40.Rc1+- Rd2 (40...Kg6 41.Rc7+-) 41.Rf1 (41.Bb7 Kg6+-) 41...Rd6 (41...Rb2 42.Rf4+-) 42.Bc8 Rb6 43.Bf5 g6 44.Be4 Kg7 (44...Re6 45.Bd5 Re7 46.Ra1+-) 45.Bf3 (better 45.Ra1!? a6+-) 45...a5 46.g3 a4 (46...Rb3 47.Ra1+-) 47.Kg2 (47.Ra1!? Rb3+-) 47...Ra6 48.Ra1 Ra5 (48...a3 49.Kf2+-) 49.Ra2 (better 49.Ra3!? g5+-) 49...a3 50.Rd2 (50.Rd2 a2 51.Rd1-/+). BeepBeepImAJeep (2690) - unjournakamura (2130), lichess.org, 2016.

6.Nf3 e4 7.Nd4 Nc5 8.Be2 0-0 9.0-0 d5 10.Nc3 Bd7 11.f4 ef3 (11...a6 12.f5=) 12.Bf3+= c6 13.Qe2 (13.bc6 bc6 14.Rb1 Rb8=) 13...Nce4 14.Be4 (14.Qd3 Nc5 15.Qe2 Qa5=) 14...Ne4 15.Ne4 de4 16.bc6 (16.Rf4 cb5 17.ab5 f5+=) 16...bc6 (worse is 16...Bc6 17.Nf5+/-) 17.Qc4 Bd6 18.Nc6 Qh4 Do you see the mate threat? 19.Ne5 The pressure on f7 grows 19...Rae8? (19...Be5 20.Be5 Rac8+–) 20.Rf7+– The mate threat is Rxf8. 20...Be6 21.Rf8 Kf8 (21...Bf8!? 22.Qc6 Qd8+–) 22.Rf1 (22.Qd4 Rd8+–) 22...Kg8 23.Qc6 Threatening mate... how? 23...Rd8 24.Ba3! Qe7 (24...Ba3 Exploits the pin 25.Qe6 Eliminates the defender e6) 25.Qe4 Ba3 26.Nc6 Qd6 (26...Qd7 27.Nd8 Bd5 28.Qd3 Qd8 29.Rf5+–) 27.Nd8 Bd5 (27...Qd8 28.Qe6 Kh8+–) 28.Qe8 (28.Qe8 Qf8 29.Rf8 Bf8 30.Qd7+–) 1–0. Kretschmar,Heinz – Barth,R, corr BRD–2cup, 1990.

5.c4 a6

6.a4 ab5 7.cb5 (7.ab5 Ra1 8.Ba1 Be7 9.d4 e4 10.Nc3 Nb6+=) 7...c6 (7...d5 8.Nf3 (8.a5+= Bd6 9.d4 Ne4 10.Qb3 Qh4–/+) 8...Bd6 9.Be2 0-0 10.0-0 Qe7+=) 8.Nf3 (8.bc6 bc6 9.d4 Be7 10.Qc2 ed4+=) 8...cb5 (8...c5 9.d3+= Qc7 10.Qd2 d5=; 8...Be7 9.Qc2 c5 10.Be2 e4+=) 9.Bb5= Be7 10.d4 (10.0-0 0-0=) 10...0-0 (10...e4=) 11.de5 de5 12.Ne5 Ne5 (12...Qa5 13.Bc3 Bb4 14.Qd4 (14.Nd7? Bc3 15.Nc3 Qc3 16.Ke2 Bd7 17.Bd7 Qc4 18.Qd3 Qd3 19.Kd3 Nd7-+) 14...Bc3 15.Nc3 Ne5 16.Qe5+=) 13.Qd8+= Rd8 14.Be5 Rd5 15.Bc3 Be6 16.0-0 Ne4 17.Bd4 Bf6 (17...Rad8 18.f3 Bc5 19.Bc5 Nc5 20.Nc3+/-) 18.Bf6+/- Nf6 19.Bc4 Rd6 20.Be6 Re6 21.Nc3 Nd7 22.Nd5 Ra5 23.Rfb1?? (23.Rfd1 f5+/-) 23...Rd6?? (better is 23...Rd5 24.Rb7 Kf8–/+) 24.Ne7 (24.e4!? Nc5 25.Rb5 Ra4 26.Ra4 Na4 27.f3+/-) 24...Kf8+= 25.Nc8 Rda6 (25...Rd2!?+=) 26.Rb7+/- Ra4 27.Ra4 Ra4 28.f4 Ke8? (better is 28...Nc5 29.Rb8 Ra2+/-) 29.Nd6+– Ke7 30.Nf7! Ke8 (30...Kf7 31.Rd7) 31.Nd6 Kd8 32.Kf2 Ke7 (32...Ra6 33.Ne4 Ra5 34.Kf3+–) 33.Nc8 (better is 33.Nf5 Kd8 34.Ng7 Kc8+–) 33...Kd8 (33...Ke8+–) 34.Rd7! Kd7 (34...Kc8 35.Rg7 h6 36.Rg6+–) 35.Nb6 Ke6 36.Na4 Kf5 37.h3 g5 (37...Kf6 38.e4+–) 38.g4 Kg6 (38...Ke6 39.f5 Kf7 40.Nc5+–) 39.f5 Kh6 (39...Kf7 40.Nc5 h6 41.Ne6+–) 40.e4 Kg7 41.e5 Kf7 42.Kg3 h5 43.gh5 g4 44.hg4 Kg7 45.g5 Kh7 46.h6 Kg8 (46...Kh8 47.g6 Kg8 48.f6 Kf8 49.Nc5 Ke8 50.f7 Ke7 51.h7 Kd8 52.f8Q Kc7 53.Qd6 Kc8 54.h8Q) 47.e6 Kf8 48.h7 Kg7 49.e7 Kh8 (49...Kf7 50.f6 Ke6 51.e8Q Kd6 52.h8Q Kd5 53.Qhg8 Kd4 54.Qd7 Ke5 55.Qge6) 50.e8Q Kg7 (50...Kh7 51.Qf7 Kh8 52.Qf8 Kh7 53.g6) 51.h8Q 1–0. Trkn – sniper!, itsyourturn.com, 2000.

6.Nf3 ab5 7.cb5 Nc5 (7...Be7 8.Be2+=) 8.a4 (8.d4 ed4 9.Bd4 Be6=) 8...Bg4 (8...e4 9.Nd4+=) 9.Be2 (9.d4 Ncd7=) 9...e4+= 10.Nd4?? (better is 10.d4 ef3 11.gf3 Na4 12.Ra4 Ra4 13.Qa4=) 10...Nd3-+ 11.Bd3 (11.Kf1 Nb2 12.Qc2 Be2 13.Ke2-+) 11...Bd1 (11...ed3 12.Qb3+=) 12.Bc2 (12.Bf1 Bg4-+) 12...Bc2 13.Nc2 d5 14.Nc3 (14.0-0 Bd6-+) 14...Ng4 15.Ne2 Qh4 16.g3 Qh6 17.h3 Bd6 18.Bd4 (18.Bg7 Qg7 19.hg4 Be5-+) 18...0-0 (18...Ne5 19.Be5 Be5 20.Ra3-+) 19.Nf4 Bf4 (19...Ne5 20.Be5 Be5 21.Ra3-+) 20.ef4 c5 21.Bb2 (21.bc6 Qc6 22.Bc3 Ra4-+) 21...d4 22.Kf1 (22.Ba3 Qh5 23.Nd4 Ra4-+) 22...Qh5 23.Ne1 e3 (23...Nf6 24.Kg2-+) 24.de3 de3 25.f3 Nf2 (better is 25...Qd5 26.hg4 Qd2 27.Nd3 Qd3 28.Kg2 Qe2 29.Kh3 Qb2 30.g5-+) 26.Rh2 Rfe8 27.Rf2 (27.Be5 f6 28.Bc7 Qd5-+) 27...ef2 28.Kf2 Qd5 29.Be5 Re5! (29...Re5 30.fe5 Qd4 31.Kf1 Qa1-+) 0–1. Marczyk,L (1800) – Grzesiak,J (1800), corr, 1996.

5.c4 Be7=+

6.Nc3 0-0 7.a4 a6 8.Nf3 Nc5 9.d4= ed4 10.Nd4 Re8 11.Be2 Ne6 12.0-0 Nd4 13.Qd4+= c5 14.Qf4 Be6 15.Rfd1 a5 16.Bf3+/- Rb8 17.Rd2 b6 18.Rad1 Qc8 19.Qg3+– Bc4 20.Ne4 Kf8 21.Nd6 (21.Nd6 Bd6 22.Qd6 Kg8 23.Bf6 gf6 24.Bc6+–) 1–0. pierre (2165) – JonathanDee, internet, 2007.

6.Nc3 0-0 7.a4 Nc5 8.d3 c6 9.Nf3 Qa5 10.Nd2 Qc7 11.Be2 Bf5 12.e4 Bg6 13.0-0= Ne6 14.g3 h6 15.Nb3 Nd4 16.Nd4 ed4 17.Nb1 c5 18.Nd2 Qd7 19.f4 Qh3? 20.f5?? Bh5= 21.Bh5 Qh5 22.Qh5+= Nh5 23.Nf3 Nf6 24.h3 Nd7 25.Kg2 f6 26.a5+/- Rfc8 27.g4 Ne5 28.Ne5 de5 29.Kf3 Kf7 30.h4 Rh8 31.Rg1 Rac8 32.Bc1 Rh7 33.Bd2 Rch8 34.Rg2 Rg8 35.Rag1 Bd8 36.b6 a6 37.Bc1 Be7 38.Rh1 Rhh8 39.Rgh2 Rc8 40.g5 hg5 41.hg5 Rh2 42.Rh2 fg5 43.Kg4 Bf6 44.Bg5 Rd8 45.Rh7 Rg8 46.Bc1 Rc8 47.Rh5 Kg8 48.Bg5 Kf7 49.Bf6+– Kf6 50.Rg5 Re8 51.Rg6 Kf7 52.Rd6 Re7 53.Rd5 Ke8 54.Rc5 Kd8 55.Kg5 Re8 56.Kg6 Rh8 57.Re5 Rh3 58.Rd5 Ke7 59.Rd4 Rg3 60.Kh5 Rg2 61.Rd5 Kf6 62.Rd6 Ke5 63.Rd7 Kf4 64.f6 Rg5 65.Kh4 Rg6 66.Kh3 Kf3 67.Kh2 Kf2 68.Kh3 Kf3 69.Kh4 Kf4 70.Kh3 Kf3 ½–½. Iosif,Daniela – Prutzer,Adelinde, BL (Women) Germany, 1993.

5.c4 g6

6.Nf3 Bg7 7.d4 0-0 8.Be2 ed4 9.Bd4 Nc5=.

6.Nf3 Bg7 7.d4 0-0 8.de5 de5 9.Ne5 (9.Be2=) 9...Ne5 (9...Ne4 10.Nd3 Ne5 11.Bd4 Nc4 12.Bg7 Kg7 13.a4=+) 10.Be5 (better 10.Qd8!? Nf3 11.gf3 Rd8 12.Be5+=) 10...Qd1= 11.Kd1 Rd8 (better 11...Re8!? 12.f4 Ng4 13.Bg7 Kg7-/+) 12.Ke2 (12.Ke1 Ne4 13.Bg7 Kg7+=) 12...Be6 13.Nd2?? (13.Ke1 Ne4 14.Bg7 Kg7+=) 13...Rac8?? (better 13...Rd2!? 14.Kd2 Ne4 15.Ke1 Be5-+) 14.Rc1?? (14.Bc3 Ng4 15.Bg7 Kg7+=) 14...c6?? (14...Rd2 15.Kd2 Ne4 16.Ke1 Be5 17.Bd3-+) 15.a4?? (15.bc6 Rc6 16.Bd4 b5=) 15...cb5 (15...Rd2 16.Kd2 Ne4 17.Kc2 Be5 18.f4-+) 16.ab5 (16.Bf6 Bf6 17.ab5=) 16...Nd7?? (better 16...Rd2 17.Kd2 Ne4 18.Ke1 Be5-+) 17.Bg7+/- Kg7 18.Kf3 (better 18.Ra1+/-) 18...Ne5=+ Increases the pressure on the backward pawn 19.Kg3?? (better 19.Ke2 Nc4 20.Nf3-/+) 19...Rd2-+ 20.f4 (20.Ra1 Nc4 21.Bc4 Rc4 (worse 21...Bc4 22.Ra7 Rd5 23.Rb1-+) 22.Ra7 h5-+) 20...Nc4 21.e4 Ne3 (21...Rb2!? 22.Bc4 Rc4 23.Rc4 Bc4 24.b6 Rb6 25.Ra1-+) 22.Kf3 (22.Rc8 Bc8 23.Kf3-+) 22…Rc1 (22...Rc1 23.Ke3 Rdd1-+) 0-1. ClayPigeons (2180) - linda_krumina (2190), Rated Bullet game, lichess.org, 2021.

6.Nf3 Bg7 7.d4 0-0 8.de5 Ne5 9.Ne5+/- (worse 9.Be5 de5 10.Qd8 Rd8=+) 9...de5 10.Qd8 (worse 10.Be5 Qd1 11.Kd1 Re8=+) 10...Rd8 11.Be5 c6 12.Nc3 cb5 13.Nb5 Bd7 14.Be2 Ne4 15.Bg7 Kg7 16.0-0 a6 (16...Bb5 17.cb5 Rac8 18.a4+=) 17.Nc7 (17.Nd4 Rab8+/-) 17...Rac8+= 18.Nd5 Be6 19.Rfd1 Bd5 (19...b5 20.Ne7 Rd1 21.Rd1=+) 20.cd5 (better 20.Rd5!? Rd5 21.cd5+/-) 20...Nc3= 21.Rd2 Rd5 22.Rd5 Nd5 23.Bf3 Nc3 (better 23...Rc5=) 24.Bb7+/- Rb8 (24...Rc4!? 25.Ba6 Ra4+/-) 25.Ba6+- Rb2 (25...f5 26.Bd3+-) 26.a3 (26.a4 Ne4 27.Bc4 Nf2+-) 26...Rb6 (26...Ne4 27.f3 Nc5 28.Bc4+-) 27.Bc4 Rc6 28.Bf1 Na4?? (28...Rc5+-) 29.Bb5 Rb6 30.Ba4 Ra6 (30...Kf6 31.Bd1+-) 31.Bd7 Kf6 32.Bb5 Ra5 33.a4 Ke7 34.Rd1 f5 (34...h5 35.Kf1+-) 35.g3 (better 35.Rd7!? Kf6 36.Rh7 Ra8+-) 35...Ra7 36.Kg2 h6 37.Rd5 g5 (37...Ke6 38.Rc5+-) 38.Rf5 Ke6 (38...Rc7 39.a5+-) 39.Rc5 Kd6 (39...Kf7 40.a5!+-) 40.Rc6 Ke7 41.Rh6 Ra4 (41...Ra5 42.Rg6+-) 42.Ba4 (42.Ba4 Kf8 43.Rg6+-) 1-0. ClayPigeons (2115) - nicolassz (2115), Rated Bullet game, lichess.org, 2020.

6.Nf3 Bg7 7.d4 Qe7 8.Be2 0-0 9.0-0 Rd8 10.Qc2 Nh5 (10...ed4 11.ed4 Re8 12.Re1+=) 11.Nc3 Nhf6 12.Rac1 b6 (12...ed4 13.ed4 Re8 14.Rfe1+/-) 13.Na4 (13.Nd5 Nd5 14.cd5 a6 15.Qc7 e4+–) 13...Bb7 14.Nd2 ed4 15.Bd4 Ne4 (15...c5 16.bc6 Bc6 17.Bf3 Bf3 18.Nf3=) 16.Nf3 Ng5 17.Bg7 Nf3 18.Bf3 Bf3 19.gf3 (19.Bh6 Qh4 20.Bf4 Qg4=) 19...Kg7 20.f4 f5 (20...a6 21.Rfd1+=) 21.Nc3 Nf6 22.Nd5 Qf7 23.Qc3 Rac8 24.Nb4 Kg8 25.Qd4 Re8 26.f3 (26.Nc6 Qe6+=) 26...Qe6+= 27.Kf2 Kf7 28.Rc3 a5 29.Nc6 Ng8 30.Qd5 Ne7 31.Qe6 Ke6 32.Nd4 Kf6 33.e4 c5 34.Ne2 Rcd8 35.Rd3 Nc8 36.Nc3 Kf7 37.Rfd1 Exerts pressure on the backward pawn 37...Ne7 (37...a4!?+=) 38.e5 d5? (38...Nc8!?+/-) 39.Nd5 Nd5 40.cd5 g5 41.Ke3 h5 (41...Rd6 42.e6 Kf6 43.fg5 Kg5 44.Rc1+–) 42.h3 (42.e6 Kf6+–) 42...Rg8 (42...Rd6 43.e6 Kf6 44.fg5 Kg5 45.Rc1+–) 43.fg5 Rg5 44.Kf4 Rg2 45.R3d2 Rd2 46.Rd2 Kg6 47.d6 Kf7 (47...c4 48.Rg2 Kf7 49.Kf5+–) 48.Kf5 c4 49.e6 Ke8 50.Kf6 (50.Kf6 c3 51.d7 Rd7 52.ed7 Kd8 53.Rc2 Kd7 54.f4+–) 1–0. Sundin,Thommy (1890) – Johansson,Mats (1850), Soederhamn Sweden, 1988.

5.d4 e4

6.c4 =.

6.Ne2 Nb6 7.Nd2 Nbd5 (better 7...d5!?=+) 8.Ng3+= Bg4 9.Be2 (9.Qb1 Nb6 10.Nde4 d5+/-) 9...h5 (9...Be2!? 10.Qe2 Qe7+=) 10.0-0 h4 (10...Be2 11.Qe2 Qe7 12.f3+/-) 11.Nge4 (11.Bg4?! hg3 12.hg3 Ng4 13.Qg4 Nf6=) 11...Be2 12.Qe2 h3 13.g3 Qe7 14.Ng5 0-0-0 15.e4 g6 16.Rfe1 Nb4? (16...Re8!?+/-) 17.Qc4 (17.Ndf3 Re8+-) 17...d5 (17...Rh5 18.f4 d5 19.ed5 Qd7+-) 18.ed5 Qd7 19.d6! Nbd5 (19...Qd6 20.Nf7 Double attack (20.Qf7 Discovered attack; 20.Qf7 Deflection; 20.Nf7 Decoy); 19...Bd6 20.Nf7 Double attack (20.Qf7 Discovered attack; 20.Nf7 Decoy)) 20.dc7 Nc7 (20...Re8+-) 21.Nf7 (worse 21.Qf7 Nh7 22.Qd7 Rd7 23.Nh3 Nb5 24.Re8 Rd8 25.Rd8 Kd8+-) 21...Qd4 (21...Bh6 22.Nf3 Qb5 23.Qb5 Nb5+-) 22.Bd4 Rh5 23.Nd8 Kd8 24.Bf6 Kc8 (24...Be7 25.Re7 Nd5 26.Rb7 Nf6 27.Qc7 Ke8 28.Qe7) 25.Re8 Kd7 26.Rd8 1-0. DEFFM – GuestFXTX, freechess.org, 2021.

5.Nf3 Be7

6.c4 0-0 7.Nc3+=.

6.c4 b6 7.Be2 a6 8.a4 Bb7 9.0-0 0-0 10.d4 Re8 (10...ed4 11.Nd4 Re8 12.Nc3=) 11.d5 (11.de5 de5 12.Ne5 Bd6 13.Nd7 Nd7+=) 11...e4 12.Nfd2 Nc5 13.Nb3 ab5 14.Nc5 dc5 15.ab5 Ra1 16.Ba1 Bd6 17.Qc2 Qe7 18.Nd2 Bc8 (18...Be5 19.Be5 Qe5 20.Nb1=) 19.Bc3 Ng4 20.h3 Nh6 21.Ra1 Qg5? (21...Bf5 22.Kh1=) 22.Kh1 (better 22.Ne4!? Qg6 23.Bd3+-) 22...f5 23.Re1 (23.Ra8 Qh4 24.Kg1 Nf7+=) 23...Qg6 (better 23...Ng4!? 24.Ne4 fe4 (worse 24...Re4 25.Bg4 Rc4 26.Be2+=) 25.Bg4 Bg4 26.hg4 Qh4 27.Kg1 Qh2 28.Kf1 Qh1 29.Ke2 Qg2-/+) 24.f4 Qg3 (24...ef3!? 25.Bf3 Qg3=) 25.Nf1+= Qh4 26.Kh2 g5?? (better 26...Ng4 27.Kg1 Qf2 28.Kh1 Ne3 29.Ne3 Qe3=+) 27.g3+- Ng4 28.Bg4 Qh6 29.Be2 Bd7 30.Bd1 Kf7 31.Qg2 g4 32.h4 Ra8 33.Re2 Ra3 34.Rc2 Be7 35.Qd2 Kf8 36.Kg2 Kf7 37.Rb2 Kf8 (37...Bf6 38.Bf6 Qf6 39.Ra2 Ra2 40.Qa2+-) 38.Rb3 Ra7 39.Rb2 Bh4?? (39...Ra3 40.Ra2 Ra2 41.Qa2 Kf7+-) 40.gh4+- Qh4 41.Ng3 (better 41.Ra2 Ra2 42.Qa2+-) 41...Qh3+/- 42.Kf2 Qh2 43.Kf1 Qg3 44.Qf2 Qh3 45.Qg2 (45.Ke1 Qh1 46.Qf1 Qh4 47.Rf2 Qg3+-) 45...Qg2 (better 45...Qe3 46.Be5 Ra1=) 46.Kg2 Ra1 47.Be2 Ra3 48.Kf2?? (48.Be5 Ra7+-) 48...h5?? (better 48...Rc3 49.Ra2 h5 50.Ra8 Be8-+) 49.Ra2?? (better 49.Be5 Ra7 50.Kg3+-) 49...Rc3 (better 49...Ra2 50.Bf6 g3 51.Kg3 Re2-+) 50.Ra8 Ke7 51.Rh8 Be8 52.Rh5?? (52.Bf1-+) 52...Bf7 (52...Bh5 53.Kf1-+) 53.Kg3?? (53.Rf5 Rc2 54.Ke1=) 53...Kf6 (53...Bh5 54.Kh4 g3-+) 54.Rh7? (better 54.Rh6 Kg7 55.Rc6-/+) 54...Bh5?? (better 54...Re3 55.Kf2 Ra3-+) 55.Rc7?? (better 55.Rh5 Re3 56.Kf2+/-) 55...Rc2 (55...Re3 56.Kf2 Ra3 57.Rc6 Ke7 58.Kf1=+) 56.Kf2 (56.Kf2 g3! 57.Kg3 Be2 58.Rc6 Ke7 59.Rc7 Kd6 60.Rc6 Kd7 61.Rb6 Bc4 62.Rf6 Bb5 63.Kh4-+). kasperoff (1770) - chishala (2240), Eastern SuperBlitz Arena, lichess.org, 2020.

6.c4 Nc5 7.d4= ed4 8.Nd4 (8.ed4 Ne6=) 8...0-0 (8...Bg4 9.Be2=) 9.Be2= Be6 10.Ne6 (10.0-0 a6=) 10...fe6 11.0-0 Nfe4 12.Nd2 Bf6 13.Bf6 Rf6 14.Bf3 (14.Ne4 Ne4 15.Bf3 Nc5=) 14...Ng5 15.Be2 Qe7 16.Qc2 (16.f4 Nge4=) 16...Raf8 (16...e5 17.Nb3=) 17.f4 (17.Nb3 Nd7=) 17...Nf7 18.Bf3 Kh8 (18...Nh6 19.Ne4 Ne4 20.Qe4+=) 19.Rae1 (19.Nb3 b6+=) 19...g5 (19...Rh6 20.Ne4 Nd7 21.Rd1=) 20.Ne4+= Ne4 21.Be4 (better is 21.Qe4 gf4 22.Qb7 fe3 23.Qa7+/-) 21...Rh6 (better is 21...Nd8!?+=) 22.Bb7+– gf4 (22...g4 23.Qf2+–) 23.ef4 e5 (23...Qf6 24.Be4+–) 24.Bd5 Rf6 25.Qe2 (25.Qa4 c5+–) 25...Qd8 (25...Qd7 26.Bf7 Qf7 27.fe5 Rf1 28.Qf1 Qf1 29.Rf1+–) 26.fe5 (26.Bf7!? R6f7 27.fe5 Rf1 28.Rf1 Rf1 29.Kf1 Qf8 30.Ke1 Qf4+–) 26...Ne5 27.Rf6 (27.Qe3 a6+–) 27...Rf6 (27...Qf6 28.g3+/-) 28.Rf1 (28.c5 Qe8+–) 28...Kg7 (28...Rf1 29.Qf1 Kg7 30.Qf2+–) 29.h3 (29.Qe3 Rf1 30.Kf1 Qb8+–) 29...h6? (29...Rf1 30.Kf1 Qf6 31.Kg1+–) 30.a4 (30.Rf6 Qf6 31.Qe3 Qg5 32.Qa7 Qc1 33.Kh2 Qf4 34.g3 Qd2 35.Kg1 Qd1 36.Kg2 Qc2 37.Qf2 Nc4 38.Qc2 Ne3 39.Kf3 Nc2+–) 30...Nd7 (better is 30...Rf1!? 31.Kf1 Qf6 32.Ke1 Qh4 33.Kd2 Qf4 34.Qe3 Nc4 35.Bc4 Qc4 36.Qa7 Qf4 37.Ke2 Qe4 38.Kf2 Qf4 39.Kg1 Qc1 40.Kh2 Qf4 41.Kh1 Qc1 42.Qg1 Qc4+/-) 31.Qg4+– Kh8 (31...Kh7 32.Qe4 Kg7 33.Qd4+–) 32.Rf6 Nf6 33.Qd4 Qe7 34.Bf3 (34.Qa7 Nd5 35.cd5 Qe1 36.Kh2 Qe5 37.g3 Qd5 38.Qb8 Kg7 39.Qc7 Kf6+–) 34...Qe6? (34...Qe1 35.Kh2 Qe5 36.Qe5 de5 37.Bb7+/-) 35.a5 (35.Kf2 Kg7+–) 35...Kg7? (35...Qe1 36.Kh2 Qe5 37.Qe5 de5 38.Bc6+/-) 36.a6 (36.Qa7 Qc4 37.b6 Qd4 38.Kf1 Ne8+–) 36...Kf8? (36...Qe1 37.Kh2 Qe5 38.Qe5 de5 39.Bb7+/-) 37.Bc6 (37.Qa7 Qc4 38.Bc6 Qc1 39.Kh2 Qf4 40.Kh1 Qf1 41.Qg1 Qg1 42.Kg1 Kf7+–) 37...Ke7? (better is 37...Qe1 38.Kh2 Qe5 39.Qe5 de5+–) 38.Qa7 Qe1 39.Kh2 Qe5 40.Kh1 (40.g3 Qe2 41.Bg2 Qc4 42.Qe3 Qe6 43.Qe6 Ke6+–) 40...Qe1 (40...Ke6 41.Qc7 Qe1 42.Kh2 Ng4 43.hg4 Qh4 44.Kg1 Qe1 45.Kh2 Qh4 46.Kg1 Qe1 47.Kh2=) 41.Qg1 Qg3 (41...Qg1 42.Kg1 Nd7 43.Bd7 Kd7 44.a7+–) 42.Bf3 (42.a7 Ng4 43.hg4 Qh4 44.Qh2 Qe1 45.Qg1 Qh4 46.Qh2 Qe1 47.Qg1 Qh4=) 42...h5 (42...Nd7 43.a7 Nb6+–) 43.a7 Ng4 44.Bg4 (44.hg4?! Qh4 45.Qh2 Qe1 46.Qg1 Qh4 47.Qh2 Qe1 48.Qg1 Qh4=) 44...hg4 (44...Qa3 45.Bh5 d5 46.Qe1 Kf6 47.Qh4 Kg7 48.Qg5 Kh7 49.Qg6 Kh8 50.Qf6 Kh7 51.Bg6 Kh6 52.Be4 Kh5 53.g4) 45.a8Q gh3 46.Qe4 Kd8 47.Qf3 hg2 48.Qgg2 Qh4 49.Kg1 (49.Kg1 Qe1 50.Qgf1 Qf1 51.Kf1+–) 1–0. Liepert,Luise – Newen,Rosi, 3 Laender–Cup (Women), 1992.

6.Be2 0-0 7.0-0 e4 8.Nd4 c5 (better is 8...d5!?=) 9.bc6+/- bc6 (9...Ne5 10.cb7 Bb7 11.Nc3+/-) 10.Nc6 Qe8 11.c4 Bb7 12.Ne7 Qe7 13.Nc3 d5 (13...Ne5 14.d4 ed3 15.Bd3 Bg2 16.Kg2 Qb7 17.Kg1 Qb2 18.Nb5=) 14.Nd5 Nd5 15.cd5 Bd5 16.f3 ef3 17.Bf3 Bf3 18.Qf3 (worse is 18.gf3 Rfd8+=) 18...Rab8 19.Bc3 Ne5 20.Qg3 Ng6 21.Rf4 Rbc8 22.Bb4 (22.Rb4 Rc6+/-) 22...Nf4 (better is 22...Qe5 23.Rd4 Qg3 24.hg3 Rfe8+=) 23.Be7 (better is 23.Qf4 Qd7 24.Bf8 Rf8 25.d4+/-) 23...Ne2+= 24.Kf2 Ng3 25.Bf8 Ne4 26.Kf3 Nd2 27.Ke2 Kf8 (27...Ne4!? 28.Bb4 f5–/+) 28.Kd2= h6 29.Rb1 Rd8 30.Ke2 Rd7 31.Kf3 Ke7 32.Rb4 g6 33.h3 f6 34.Ra4 h5 35.g4 hg4 36.hg4 Ke6 37.Ke4 f5? (better is 37...Re7!?=) 38.gf5+/- gf5 39.Kf4 Rb7 40.Ra6 Kd5 41.Ra5 Kc4 42.Kf5 Kb4 43.Ra6 Kc3 (better is 43...Rf7!? 44.Rf6 Rh7+/-) 44.e4+– Kd3 (44...Rf7 45.Ke6 Rg7 46.Ra4+–) 45.e5 Re7 (45...Kc4+–) 46.Kf6 Rc7 47.e6 Kd4 (47...Rh7 48.Rd6 Kc4 49.e7 Rh6 50.Ke5 Rh5 51.Kf4 Rh4 52.Kg5+–) 48.e7 Re7 (48...Rc8 49.Ra7 Kc5 50.Rd7+–) 49.Ke7 1–0. GuestLJTQ – GuestBLXP, freechess.org, 2017.

6.Be2 0-0 7.a4 b6 8.0-0 Bb7 9.d4 e4 10.Nfd2 d5 11.c4 c6 12.Nc3 Re8 (12...Bd6 13.Ba3 c5 14.cd5 cd4 15.Bd6 dc3 16.Bf8 Qf8 17.Nc4 Nd5 18.a5+=) 13.bc6+= Bc6 14.Qb3 Nf8 (14...dc4!? 15.Bc4 Rf8+=) 15.cd5+/- Bd5 16.Nd5 Qd5 17.Qd5 Nd5 18.Ne4 Bb4 19.Bd3 Rac8 20.Rfc1 h6 21.Ng3 Ne6 22.Nf5 Ne7 23.Ne7 Be7 24.g3 Kf8 25.Kf1 g6 26.Ke2 Red8 27.Rc8 Rc8 28.h4 h5 29.Rc1 Rc1 30.Bc1 Bb4 31.Bb2 Ke7 32.e4 Kd6 (32...Nc7 33.d5+–) 33.Ke3 Nd8 34.Bc4 White prepares the advance d5 34...Ke7 35.d5 Nb7 36.e5 Bc5 37.Ke2 Nd8 (37...Bb4 38.d6 Ke8 39.Bc1+–) 38.Bc1 Nb7 39.Bg5 Kf8 40.Ba6 Na5 41.f4 Be7 42.Bh6 Kg8 43.d6 Bd8 44.Bb5 Nb7 45.Kd3 Nc5 46.Kd4 a6 47.Bc4 Na4 48.Bg5 Bg5 49.hg5 Nc5 50.Kd5 1–0. Sternik,Ryszard – Wallace,Gary, EM b4–05–22, 2005.

6.Be2 Nb6+=.

5.Nf3 g6

6.c4 Bg7 7.d3 0-0 8.Be2 a6 9.a4 b6 10.0-0 Bb7 11.Nc3 Nc5 12.Qc2 Qe7 13.Nd2 a5 14.d4 ed4 15.ed4 Nce4 (15...Ne6!? 16.Nb3 Nf4=) 16.Nce4 Ne4 17.Bf3 f5 18.Qd3 Rae8 19.Rae1 Qf7 20.d5?? (better is 20.Ne4 fe4 21.Be4 Be4 22.Re4 Re4 23.Qe4 Qc4 24.Ra1+=) 20...Nc3?? (20...Bb2 21.Be4 fe4 (21...Re4?! 22.Ne4 fe4 23.Re4+=) 22.Ne4 Bc8-+) 21.Bc3+– Bc3 22.Qc3 g5 23.Bd1 Bc8 24.f3 Qg7 Black prepares g4 25.Qg7 Kg7 26.Kf2 Kf6 27.g3 h5 28.f4 g4 29.Bc2 Bd7 30.Re8 Re8 31.Re1 Rh8 32.Kg2 h4 33.Bd1 hg3 34.hg3 Rh7 35.Bc2 Rg7 36.Rh1 Re7 37.Kf2 Kg7 38.Rh5 Kg6 39.Rh1 Kf6?? (39...Kg7 40.Nf1 Kf6+–) 40.Rh6 Kg7 41.Rh1 Kg6?? (better is 41...Kf6=) 42.Rh4 Kg7 43.Rh1 Kf6 44.Rh4 Rf7?? (44...Kg7 45.Nb3 Kf6+–) 45.Rh8 (45.Nb3!? Rf8+–) 45...Re7 ½–½. Satka,Martin – Schultchen,Hermann (1635), 8sen.LSEM Brandenburg, 2000.

6.c4 Bg7 7.Be2 a5 8.a4 0-0 9.0-0 b6 (9...Re8 10.d4=) 10.d3 Bb7 11.e4 Nc5 12.Bc1 Nh5 13.Be3 (13.Ra2 Qd7=) 13...Nf4 (13...f5 14.Nbd2=+) 14.Nbd2 (14.Bf4!? ef4 15.Ra3=) 14...Ncd3-/+ 15.g3 (15.Bd3!? Nd3 16.Qb3-/+) 15...Ne2 16.Qe2 Nc5 17.Bc5 bc5 18.Rad1 f5 19.ef5 gf5 20.Nh4 Bh6 Black prepares the advance f4 21.Qh5 Qg5 22.Qg5 Bg5 23.Ng2 f4 24.f3 (better 24.Rfe1!?-/+) 24...fg3-+ 25.hg3 Bd2 26.Rd2 Rf3 27.Rdf2?? (better 27.Rf3 Bf3 28.Ne3-+) 27...Rg3 28.Kh2 Rg7 (better 28...Ra3!? 29.Rg1-+) 29.Ne3 Be4 30.Nd5 (30.Kh3 h6-+) 30...Bd5 31.cd5 Re8 32.Rg2 (32.Rf6 Rg6-+) 32...Rg2 33.Kg2 Rf8 34.Re1 (34.Rb1 Rf4-+) 34...Rf4 35.Kg3 (35.Ra1 Rd4-+) 35...Ra4 36.Rg1 Rb4 37.Kf3 Kf7 38.Rh1 Kg6 39.Rg1 Kf5 40.Rh1 Rb3 41.Ke2 Ke4 42.Rh7 Rb2 43.Kd1 Rb5 44.Rc7 Kd5 45.Ra7 (45.Rd7 c4-+) 45...Kd4 46.Kd2 e4 47.Rh7 Rb2 48.Kc1 Rg2 49.Rh3 e3 50.Kd1 Kd3 51.Kc1 d5 52.Rh5 Kc4 53.Rh4 d4 54.Rh1 d3 55.Rd1 Kc3 Black prepares the advance d2 56.Kb1 d2 (56...Rb2 57.Ka1 d2 58.Rf1 Kc2 59.Rb1 Rb1 60.Ka2 d1Q 61.Ka3 Ra1) 57.Rh1 (57.Ka1 e2 58.Rb1 d1Q 59.Rc1 Qc1 60.Ka2 e1Q) 57...e2 (57...c4 58.Rd1 e2 59.Rd2 e1Q 60.Ka2 Qd2 61.Ka3 Qa2) 58.Rh3 Kb4 59.Rh4 (59.Kb2 d1N 60.Kb1 e1Q 61.Rh4 Kb3 62.Rb4 cb4 63.Ka1 Ne3) 59...c4 (59...Kb5 60.Rb4 Kb4 61.Kb2 d1Q 62.Ka2 e1Q) 60.Rh1 (60.Kb2 d1Q 61.Rc4 Kc4 62.Ka2 e1Q 63.Ka3 Qe3) 60...d1Q 61.Rd1 ed1Q (61...ed1R?!=) 0-1. Antares_Sco (2010) - Morphite (2230), Daily Blitz Arena, lichess.org, 2020.

6.Be2 Bg7 7.0-0 0-0 8.c4 Re8 9.Qb3 e4 10.d4?? (better 10.Nd4=) 10...ef3-+ 11.Bf3 h5 12.Re1 Nf8 13.e4 Bg4 14.Nd2 N8h7 15.Rad1 Bf3 16.Nf3 (better 16.Qf3!? a6 17.ba6 Ra6 18.a3-+) 16...Re4 17.d5 Re1 18.Re1 Qd7 19.Qc3 Re8 20.Rf1 Qg4 21.h3 Qf4 22.g3 (22.Bc1 Qf5 23.Qa5 Qc2-+) 22...Qf5 23.Nd4 (23.Kg2-+) 23...Qh3 24.Nf3 Re7 (24...Re2 25.Ba1 Ra2 26.Qd4-+) 25.Nh2 (25.Re1 Re1 26.Qe1 Qg4-+) 25...Qh2! 26.Kh2 Ng4 27.Kg2 Bc3 28.Bc3 Re4 29.Kf3 (29.f3 Ne3 30.Kf2 Rc4-+) 29...Rc4 30.Bd2 (30.Rc1 Nhf6-+) 30...Nh2 31.Ke2 Nf1 32.Kf1 Rc2 33.Be3 (33.Ke1 Nf6 34.a3 Nd5-+) 33...Ra2 34.Kg2 (34.b6 ab6 35.Bd4 b5-+) 34...a5 (34...Nf6!? 35.Kf3-+) 35.ba6 ba6 36.Ba7 a5 37.Bb8 (37.Bd4 Rd2 38.Bc3 Rd5-+) 37...Rc2 38.Kf3 Nf6 39.Ke3 Nd5 40.Kd3 Rf2 41.Kc4 Rf5 42.Kb3 Rf3 43.Kc4 Ne7 (better 43...Nb6 44.Kd4 Na8 45.Ba7-+) 44.Bc7 Rg3 45.Bd6 Rg4 46.Kb3 Nf5 47.Bc5 a4 48.Ka3 h4 49.Bf2 h3 50.Bc5 h2 51.Bb4 (51.Ka2 h1Q 52.Kb2 Qf3 53.Kb1 Qd1 54.Kb2 Rg2 55.Bf2 Rf2 56.Kc3 Qd4) 51...h1Q 52.Ka4 (52.Kb2 Qh2 53.Bd2 Qd2 54.Ka3 Qc1 55.Ka2 Rg2) 52...Qe4 53.Ka5 (53.Kb5 Qb4 54.Ka6 Rg1 55.Ka7 Ra1) 53...Qb4 54.Ka6 Qb3 55.Ka5 Ra4 0-1. kasperoff (1810) - Rubik_2 (2400), Hourly Blitz Arena, lichess.org, 2020.

4.b5 Be6

5.d4 c6 6.de5 Nd5 7.ed6 Bd6 8.Bg7+/- Rg8 9.Bb2 Qa5 10.Qd2 Bb4 11.c3 Bd6 12.a4 cb5 13.ab5 Qb6 14.g3 Nd7 15.Bg2 0-0-0?? 16.Bd5+– Bd5 17.Qd5 Nc5 18.Ne2 Qb5+/- 19.Ba3?? Nd3-+ 20.Kf1 Ba3 21.Na3 Qd5-+ 22.Rg1 Qf5 23.f4 Kb8 24.Nc4 Qe4 25.Nd4 Rd4! 26.Nd2 Nf4 27.Ne4–/+ Re4 28.ef4 Re3 29.Rc1 Rc8 30.c4 Re4 31.c5 Rd4 32.Rg2 b6 33.c6 Rc7 34.Rgc2 Rd6 35.Kg2 a5 36.Rc4 Ka7-+ 37.Kf3 Ka6 38.Ke4 b5 39.Rc5 a4 40.Ke5 Re6 41.Kf5?? Ka5?? 42.Rb1+/- a3?? 43.Rbb5 Ka4+= 44.Ra5 Kb4 45.Rcb5 Kc4 46.Rc5 Kb4= 47.g4 Kb3?? 48.Rab5 Ka2? 49.Rc2+– (49.Rc2 Ka1 50.Rc3+–) 1–0. MasterofDisaster – HUGHESRTIM, Live Game Caissa's Web, 2005.

5.d4 Nbd7 6.c4 Be7 7.d5 Bf5 8.Ne2 0-0 9.Ng3 Bg6 10.Be2 Ne4 (10...a6 11.Nc3=) 11.Nc3 (11.Ne4 Be4 12.0-0 Nc5=) 11...Ng3=+ 12.hg3 f5 13.Bh5 Rf6 14.Bg6 Rg6 15.Qh5?? (better 15.Qf3 Rf6 16.e4 fe4 17.Qe2=) 15...Rh6-+ 16.Qf5 (16.Qh6 gh6 17.Rh5 Bg5-+) 16...Rh1 17.Ke2 Ra1 (17...Ra1 18.Ba1 a6-+) 0–1. aravind555 (1625) – KrasterGuitars (1620), lichess.org, 2019.

5.d4 Be7 6.c4 (6.de5 de5 7.Qd8 Kd8 8.Be5 a6+=) 6...e4 (6...ed4 7.Bd4 c5 8.Bc3=+) 7.d5 Bf5 8.Nc3 c6 9.dc6 bc6 10.Be2 c5 (10...Be6 11.Qa4=) 11.Qc2 (11.g4 Bg6+–) 11...d5 (better 11...Nbd7!?=) 12.Nd5+– Nd5 13.cd5 Qd5 (13...0-0 14.g4 Bg6 15.h4 Bh4 16.Qc5+=) 14.Bg7 (14.Bc4!? Qd8 15.g4+–) 14...Rg8+= 15.Rd1 Qb7 16.Be5 f6 (16...Bg4 17.Bg3+–) 17.Bf4 Rg2 18.Bg3 c4 (better 18...a6 19.Rb1 Qb6+–) 19.Bf1?? (better 19.Qc4 Nd7 20.Kf1 Rg3 21.hg3+–) 19...Bb4= 20.Ke2?? (better 20.Rd2 Rg3 21.hg3 Bd2 22.Kd2 Qd5 23.Kc1 Qb5 24.g4=) 20...Bg4 21.Nf3 ef3 (21...Bf3) 0–1. aravind555 – khomster88, lichess.org, 2017.

5.d4 g6 6.de5+= de5 7.Be5 (7.Qd8 Kd8 8.Be5 Nbd7+–) 7...Bg7 (7...Qd1 8.Kd1 Ng4 9.Bg3=) 8.Nf3 (8.Qd8 Kd8 9.Nd2+–) 8...0-0 (8...Qd1 9.Kd1 0-0 10.Ng5+= (10.Bc7? Ne4-+)) 9.Be2 (better 9.Qd8!? Rd8 10.Bc7+–) 9...Qd1+= 10.Bd1 Nbd7 11.Bb2 (11.Bc7? Ne8 12.Nd4 Nc7-+) 11...Rad8 12.0-0 (12.Nd4 Ne4+=) 12...Nc5 (12...Bc4!?=) 13.a4 Nfe4 14.Bg7 Kg7 15.c3 (better 15.Nd4+=) 15...Bc4=+ 16.Re1 Nb3?? (better 16...Nd3 17.Nbd2 Ne1 (worse 17...Nc3 18.Rf1 Bd5 19.Ra3 Nd1 20.Rd1=) 18.Ne4 Bd5=+) 17.Bb3+– Bb3 18.Na3 (18.Nd4 Bc4+–) 18...Rd7 (18...Ba4 19.Nb1 Bb5 20.Ra7=+) 19.c4+= Rfd8 (19...Ba4!? 20.Nb1 Nc5+=) 20.Nd4+– Nd2 (20...Nc5+–) 21.Rec1 (better 21.Nb1 Rd4 22.ed4 Nc4 23.Re7+–) 21...Ba4= 22.Ra2 (better 22.c5=) 22...Nb3–/+ 23.Nb3?? (23.Rd1 Nd4 24.Rd4 Rd4 25.ed4 Rd4–/+) 23...Bb3 (23...Rd1 24.Rd1 Rd1) 24.Rb2?? (better 24.Raa1=+) 24...Rd1 25.Rd1 Rd1 (25...Bd1?! 26.Kf1=). aravind555 (1875) – edinho42 (1870), lichess.org, 2020.

5.Be2 a6 6.a4 Be7 7.Nf3 0-0 8.c4 c6 9.Ng5 Nbd7 (9...Bf5 10.0-0 ab5 11.ab5 Ra1 12.Ba1 cb5 13.cb5 Qb6=) 10.Ne6 (10.Nc3 Bf5 11.0-0 ab5 12.ab5 Ra1 13.Ba1 h6=) 10...fe6 11.0-0 (11.Nc3 d5 12.0-0 d4 13.Nb1 Nc5=) 11...d5 (11...ab5 12.cb5 c5 13.d3 d5=) 12.Bg4 (12.Na3 e4 13.bc6 bc6=) 12...Ng4 13.Qg4 Rf6 (13...Rf5=) 14.d3 Rg6 15.Qe2 Bd6 16.Nd2 Qg5 17.g3 Rf8 18.Rae1 Bb4 19.Nf3 (19.Ra1 c5+=) 19...Qg4–/+ 20.Ne5 Ne5 21.Be5 Be1 22.Qg4 (22.Re1!? dc4 23.dc4 cb5 24.ab5–/+) 22...Bf2! 23.Rf2 Rg4 24.Rb2 (24.cd5 ed5 25.bc6 bc6 26.Rf8 Kf8-+) 24...dc4 25.ba6 ba6 26.d4 Rf3?? (26...c5!? 27.dc5 Rc8 28.Bd6-+) 27.Bf4 (better is 27.Rb8!? Kf7 28.Rb7 Kf8 29.Rb8 Ke7 30.Rb7 Ke8 31.Rb8 Kd7 32.Rb7 Kd8 33.Rb8 Ke7 34.Rb7 Ke8 35.Rb8 Ke7=) 27...Rgf4! 28.ef4 (28.ef4 c3; 28.gf4 Re3) 28...Rb3 29.Rc2 Rb4 30.a5 Kf7 31.Kf2 Kf6 (31...Ke7 32.Ke3–/+) 32.Kf3 Ke7 33.Ke4 Kd6 34.g4 c5 35.Rc3 Kc6 36.f5 ef5 37.gf5 Kd6 38.h3 Kc6 39.Rg3 (better is 39.h4!?–/+) 39...Rb7-+ (39...Rb7 40.d5 Kd6-+) 0–1. Chirowska Raj – Jastrzebska,Beata, corr Poland–ch (Women), 1986.

5.Be2 Be7 6.Nf3 0-0 7.0-0 h6 8.a4 a6 9.Nc3 ab5 10.ab5 Ra1 11.Qa1 Nbd7 12.d3 Nb6 (12...c6 13.d4=) 13.Qa7 Qa8 14.Ra1 Qa7 15.Ra7 Rb8 16.e4 Nc8 17.Ra1 c5 18.bc6 (18.Kf1 Nb6=) 18...bc6= 19.Bc1 Nd7 20.Ra6 Ndb6 21.d4 f6 (21...Bf6 22.Be3=) 22.h3 Kf7 23.Kh2 Ra8 24.Ra8 Na8 25.Be3 Nab6 26.Kg3 g5 27.h4 g4 28.Nd2 h5 29.f3 ed4 30.Bd4 c5 31.Be3 f5 32.ef5 Bf5 33.fg4 hg4 34.Nde4 d5 35.Nc5 Bd6 36.Kf2 g3 37.Kf3 Bc2 38.Nd3 Bb3 39.Nb5 Bb8 40.Bf4 Bf4 41.Nf4 Ne7 42.Nd4 Bc4 43.Bd1 Ng6 (43...Kf6!?+/-) 44.Ng6+- Kg6 45.Bc2 Kh5 46.Kg3 Nd7 47.Ne6 Nf6 48.Ng7 (48.Kh3 Kh6 49.g4 Ne4+-) 48...Kh6 49.Nf5 Kh5 (49...Kh7 50.Kf4+-) 50.Kf4 d4 (50...Kg6+-) 51.g4! Ng4 52.Bd1 (52.Nd4?! Kh4 53.Nf5 Kh3=) 52...d3 53.Bg4 Kg6 54.h5 (54.Ng3 Kf7+-) 54...Kf6 (54...Kh7 55.Bf3 Be6 56.Nd6+-) 55.Ng3 Bb5 56.Ne4 (56.Bf5!? d2 57.Bg4 Bd3+-) 56...Kg7 57.Kg5 Kh8 (57...Bc4 58.Nd2 Bg8 59.Bf5+-) 58.Nf2 (better 58.Bf5!? Bc4+-) 58...Kg7 59.h6 Kh8 60.Ne4 (60.Bf5 d2 61.Bc2 Be2+-) 60...Bc6 (60...Bc4 61.Nd2 Bg8 62.Bf5+-) 61.Nd2 Bb5 62.Be6 Ba4 63.Bc4 Bc2 64.Bb3 Bb3 65.Nb3 Kh7 66.Nd2 (66.Kh5 Kg8 67.Kg6 d2 68.Nd2 Kf8+-) 66...Kh8 (66...Kg8 67.Kg4 Kf8+-) 67.Kg6 Kg8 68.Nf3 (68.h7 Kf8 69.h8Q Ke7 70.Qd4 Ke6 71.Ne4 Ke7 72.Qd6 Ke8 73.Nf6) 68...Kh8 (68...Kf8 69.h7 Ke7 70.h8Q Ke6 71.Qe5 Kd7 72.Qd5 Kc7 73.Qc5 Kd7 74.Ne5 Ke6 75.Nc4 Kd7 76.Nb6 Ke6 77.Qd5 Ke7 78.Qd7 Kf8 79.Qf7) 69.h7 d2 70.Ne5 (70.Ne5 d1Q 71.Nf7; 70.Nd2?!) 1-0. Clay56 (2500) - kianas (2040), ChessWorld.net, 2012.

5.Ne2 Be7 6.Ng3 0-0 7.Be2 Nbd7 (7...a6 8.ba6 Na6 9.0-0=+) 8.0-0 Nb6 9.a4 a6 10.a5 (10.f4 ab5 11.ab5 Na4=) 10...Nc4=+ 11.Bc4 Bc4 12.d3 (12.ba6 Bf1 13.ab7 Rb8 14.Qf1 Rb7=+) 12...Bb5–/+ 13.c4 Bd7 14.Nc3 Ne8 (14...Be6 15.f4–/+) 15.Nd5=+ Bh4 16.Qh5 c6 (16...Bg3 17.fg3 b5 18.ab6–/+) 17.Nc3 (17.Nb6!? Bg3 18.Na8=+) 17...Be7 (17...Bg3 18.fg3 Nf6 19.Qg5–/+) 18.Nce4 (18.Nf5 Bf6 19.Ng3 Qc8–/+) 18...Nf6 (18...f5!? 19.Nd2 f4 20.ef4 Rf4–/+) 19.Nf6=+ Bf6 20.f4 ef4 21.Bf6 Qf6 22.Ra2 (better 22.Ne4!? Qe6 23.Rae1=+ (23.Rf4? f5-+)) 22...Qc3-+ 23.Rf4 Qd3 24.Re4?? (better 24.Qe2 Qe2 25.Re2-+) 24...Qb1 25.Nf1 Qe4 26.Rf2 (26.Rb2 Bg4 27.Qh4 Qc4 28.Rb7 Rab8-+) 26...Qc4 27.Rf3 (27.Rb2 Rab8-+) 27...Rae8 (27...Qb5!? 28.Ng3-+) 28.Rf4 Qb5 29.Qh4 (29.Qd1 Qa5 30.Qd6 Qd5-+) 29...Qa5 30.Rf3 (30.Qf2 Qe5-+) 30...d5 31.Rg3 Re4 (31...Qa1 32.Qb4-+) 32.Qg5?? (better 32.Rg7! Kg7 33.Qg5 Kh8 34.Qf6 Kg8 35.Qg5 Kh8 36.Qf6 Kg8 37.Qg5 Kh8=) 32...g6 (32...Qa1 33.Qh5-+) 33.h4 (33.Qf6 Qe1-+) 33...Qe1 (33...Qd8!? 34.Kf2-+) 34.h5 a5 35.Qf6 Re6 36.Qg5 (36.Qb2 b5-+) 36...Qa1 37.hg6 (37.Rf3 Qe5 38.Qh4 Qh5-+) 37...fg6 38.Rh3 Qf1 (38...Rf1 39.Kh2 Rh1 40.Kg3 Qe1 41.Kf3 Rf1 42.Kg4 Re4) 39.Kh2-+ Ref6 40.Qh6 Do you see the mate threat? 40...Bh3 41.Qh3 Rf2 (41...Rf5 42.Qf5 Rf5 43.Kh3 Rg5 44.Kh4 Rg2 45.e4 Qh1) 42.Qe6 R8f7 43.Qe8 (43.Qh3 R7f5 44.e4 Rh5 45.Kg3 Rh3 46.gh3 Qg2 47.Kh4 Rf4) 43...Kg7 44.Qe5 R2f6 (44...Kh6 45.Qg3 R7f5 46.Qh4 Rh5 47.Qh5 Kh5 48.e4 Qg2) 45.Kg3 a4 46.Kh2 a3 47.Kg3 (47.e4 a2 48.Kh3 Qh1 49.Kg3 d4 50.Qd4 g5 51.e5 Qe1 52.Kh3 Rh6 53.Qh4 Qh4) 47...Qf5 (47...a2 48.Qb2 Kh6 49.Qb4 Qf2 50.Kh3 Rf3 51.gf3 Rf3 52.Kg4 Qg3) 48.Kh2 Qe5 49.g3 (49.Kh3 Qh5 50.Kg3 g5 51.e4 Qh4) 49...Qe3 (49...Rf2 50.Kh3 Qh5) 50.Kg2 Rf5 51.Kh3 Rh5 52.Kg2 (52.Kg4 Qd4) 52...Rf2 (52...Qf2) 53.Kg1 Qe1 (53...Qg3) 0–1. aravind555 (1665) – ashish847 (1660), lichess.org, 2019.

5.a4 Nbd7

6.c4 Be7 7.Nc3 c6 (7...0-0 8.Nf3+=) 8.d3 (8.d4 0-0+=) 8...Rc8 (8...0-0 9.Nf3+=) 9.Qb3 (9.Nf3 Qa5+=) 9...0-0–/+ 10.Rc1 (10.Nf3 d5–/+) 10...d5 11.Na2 (11.bc6 bc6 12.Nf3 Rb8–/+) 11...dc4 (11...Nc5 12.Qc2 cb5 13.ab5-+) 12.dc4 cb5 13.ab5 Nc5 14.Qc3 (14.Qc2 Qc7–/+) 14...Nfd7 (14...Nce4!? 15.Qc2 Bc4 16.Bc4 Rc4 17.Bc3-+) 15.Nf3–/+ Na4 16.Qb3 Ndc5 17.Qc2 Bc4?? (better is 17...Nb2 18.Qb2 Qa5 19.Qd2 Qc7–/+) 18.Bc4+– Nd3? (better is 18...e4 19.Ne5 Bf6+/-) 19.Qd3 Qd3 (19...Nb2 20.Qd8 Rfd8 21.Ne5 Nc4 22.Nc4+– (22.Rc4?! Rc4 23.Nc4 Rc8+/-)) 20.Bd3 Nb2 21.Be2 (21.Ke2!? Nd3 22.Kd3 Bd6+–) 21...Bb4 22.Nd2?? (22.Kf1 Rc1 23.Nc1 Rc8+–) 22...Rc1?? (better is 22...Rfd8 23.Rc8 Bd2 24.Kf1 Rc8–/+) 23.Nc1+/- Rd8 (23...Rc8 24.Ncb3+/-) 24.Ncb3+– Nd3 (24...Rd6 25.h4+–) 25.Kf1 (25.Bd3!? Rd3 26.Ke2 Rd5+–) 25...Bd2 (25...Nc1 26.Nc1 Rd2 27.g3+–) 26.Nd2 White launches an attack 26...Nc1 (26...Nb2 27.Ne4+–) 27.Ke1 Rc8 (27...Kf8+–) 28.f3 (better is 28.Bc4!? Nd3 29.Ke2+– (29.Bd3?! Rc1 30.Ke2 Rh1+/-)) 28...Nd3+/- 29.Bd3 Rc1 A double attack 30.Kf2 Rh1 31.Nf1 h6 (better is 31...a5+–) 32.g3 g5 (32...g6 33.Kg2 Rf1 34.Kf1+–) 33.Kg2 Rf1 34.Kf1 f6 (34...Kg7 35.Be4 b6 36.Ke2+–) 35.Ke2 Kf7 36.Kd2 (36.Be4 b6+–) 36...Ke6 37.Kc3 (37.Be4 b6+–) 37...Kd5 (37...f5 38.g4 fg4 39.fg4+–) 38.Be4 (38.Kb4!? Kd6+–) 38...Kc5 39.Bb7 Kb5 40.Kd3 (40.Be4 a5+–) 40...Kc5 (40...a5 41.Ke4+–) 41.Ke4 a5 42.Bd5 (better is 42.Kf5+–) 42...f5?? (better is 42...a4+–) 43.Ke5 a4 44.Bg8 a3 (44...f4 45.gf4 gf4 46.Kf4+–) 45.Kf5 Kd6 (45...Kb4 46.Kg6+–) 46.Kg6 a2 (46...Ke5+–) 47.Ba2 g4 (47...Ke7+–) 48.f4 h5 49.Kh5 (49.f5 Ke5+–) 49...Ke7 50.Kg4 Kf6 51.h4 Kg6 52.f5 Kf6 53.e4 Ke5 54.Kg5 Kd6 55.Kg6 Ke7 56.Kg7 Kd6 57.f6 Ke5 58.f7 Ke4 59.f8Q Ke5 60.Kg6 (60.Qf4) 60...Ke4 61.Bd5 (better is 61.h5 Kd4+–) 61...Kd5 62.Qe8 Kd6 63.Kf6 Kd5 64.Qe5 Kc4 65.Qd6 Kc3 66.Ke5 Kc4 67.Qd4 Kb5 68.Qc3 Kb6 69.Kd6 Kb5 70.Qc5 Ka6 71.Qb4 Ka7 72.Kc7 1–0. Dilz,Jasmin – Meyer,Stephan, Willingen GER Ch U12, 2005.

6.c4 Be7 7.Nf3 0-0 8.Be2 h6 (8...a6 9.0-0=+) 9.0-0 Nc5 (9...c5 10.d3=) 10.d4 White fights for the Initiative 10...ed4 11.Nd4 (worse 11.Qd4 Nb3 12.Qd3 Na1 13.Ba1 a6-+) 11...Ncd7 (11...Qe8 12.Ne6 fe6 13.Bd4=) 12.Qc2 a6 13.Bf3 ab5 (13...Nc5 14.Nd2+=) 14.ab5 Ra1 15.Ba1 b6 (15...Qa8 16.Nd2+=) 16.Nc6+– Qe8 17.Nd2 g6 (17...Nb8 18.Ne7 Qe7 19.Bd4+–) 18.Ne4 (18.Bd4 Ng4+–) 18...Ne4 19.Be4 Nf6 20.Bc3 Ne4 21.Qe4 Bf5?? (21...Qd7 22.Qd4 f6 23.Nb4+–) 22.Qd4 (better 22.Ne7 Kh7 23.Qd4+–) 22...f6+– 23.Ra1 Kg7 (23...Rf7!?+–) 24.Ra7+– (24.Ne7?! Qe7 25.f3 Qe5+=) 24...Rf7? (24...Qd7 25.e4 Bg4+–) 25.Rc7 Qa8 (25...Bd7+–) 26.h3 (26.Re7 h5 27.Rf7 Kh8 28.Qf6 Kg8 29.Qg7) 26...Qe8 (26...Bd8 27.Rf7 Kf7 28.Qd5 Kf8 29.Qd6 Ke8 30.Bb4 Qa1 31.Kh2 Qe5 32.Ne5 fe5 33.g4 Bg5 34.f4 Bf4 35.ef4 Kf7 36.Qf8 Ke6 37.Qe7) 27.Ne7 (better 27.Re7 Qe7 28.Ne7+–) 27...Re7 (27...Qd8 28.Rb7 Bd7+–) 28.Qf6 Kh7 (28...Kg8 29.Qh8 Kf7 30.Qg7 Ke6 31.Qf6) 29.Re7 Kg8 (29...Qe7 30.Qh8) 30.Qg7 1–0. RichardSommer (1980) – kingoflion (1995), lichess.org, 2020.

6.Nf3 Be7+=.

5.a4 Be7

6.c4 0-0 7.Ne2 a6 8.Ng3 ab5 (8...d5 9.cd5 Qd5 10.Nc3–/+) 9.ab5=+ Ra1 10.Ba1 c6 11.Qc1 (11.d4 ed4 12.Bd4 d5 13.cd5 Nd5=+) 11...cb5 12.Qa3? (better 12.cb5 Nbd7 13.d4=+) 12...bc4-+ 13.Qc1 Nc6 (13...b5 14.d3-+) 14.d3 (14.Bc4 d5 15.Be2 Qb6-+) 14...Qe8 (14...cd3 15.Qd2-+) 15.f3 (better 15.dc4 Qd7 16.Bd3-+) 15...cd3 16.Be2 (16.Bd3 Nb4 17.Be2 Qc6-+) 16...d5 (16...de2 17.Ne2 Qa8 18.Nbc3-+) 17.Bc3 (17.Bd3 Qd7-+) 17...b6 (17...de2 18.Ne2 Qd8 19.Qb2-+) 18.Bd2 (18.Bd3 d4 19.ed4 ed4-+) 18...Qd8 (better 18...de2 19.Ne2 Qd7 20.0-0-+) 19.Rg1 (19.Bd3 Nb4 20.Be2 d4-+) 19...Qb8 (better 19...Nb4 20.Bd1 Qd6-+) 20.Rf1 (20.Bd3 Rc8 21.Qb2 Bd6-+) 20...Bh3 (better 20...de2 21.Ne2 Rc8-+) 21.gh3 (21.Bd3 Nb4 22.Be2-+) 21...Qc7 (better 21...de2 22.Rg1 Qc8-+) 22.Na3?? (better 22.Bd3 Rc8 23.Nf5+=) 22…Nh5 (better 22...de2 23.Ne2 Qd7-+). RichardSommer (2140) – silvijekutle (1965), lichess.org, 2020.

6.c4 0-0 7.Ne2 Bc4!? 8.Qc2 Bd5–/+.

6.c4 0-0 7.Ne2 c6 8.Ng3 cb5 9.ab5 Nbd7 10.Qc1 (10.d4 ed4 11.Bd4 d5 12.cd5 Bb4 13.Nd2 Nd5=) 10...Nc5 (better 10...d5–/+) 11.Ke2?? (better 11.Qc2 d5 12.d4 ed4 13.Bd4 dc4 14.Bc4=) 11...Bd5?? (better 11...Nb3 12.Qc3 Na1 13.Ba1 a6 14.ba6 Ra6-+) 12.Ne4?? (better 12.cd5 Nb3 13.Qc4 Na1 14.Ba1+=) 12...Ncd7 (better 12...Be4!? 13.f3 Bd3 14.Kf2-+) 13.Qd1?? (better 13.Nf6 Nf6 14.cd5 Nd5 15.d4+–) 13...h6 (better 13...Be4 14.f3 Bg6-+) 14.Nec3?? (14.Nec3 Bc4 15.Ke1 Bf1 16.Rf1-+; better 14.Nf6 Nf6 15.cd5 Nd5 16.Ke1+–) 1–0. RichardSommer (2130) – extirpador (2100), lichess.org, 2020.

6.c4 0-0 7.Nf3 Re8 8.Be2 Bf8 (8...Qd7 9.d4=) 9.0-0= g6 (9...Nbd7 10.a5=) 10.d4 Bg7 11.de5 de5 (11...Nfd7 12.Qc2 Ne5 13.Ne5 de5 14.Rd1+=) 12.Qd8 Rd8 13.Be5 Nbd7 14.Bb2 Bg4 (14...a6 15.Rd1+–) 15.Nbd2 (15.Rd1 a6+–) 15...Bf3 (15...Ne4 16.Ne4 Bb2 17.Ra2+–) 16.Nf3 (16.Bf3 Nc5 17.Bd4 Nfd7+–) 16...Bh6 (16...Ne4 17.Nd4+–) 17.Rfd1 (17.a5 a6+–) 17...Bg7 18.a5 b6 (18...Ne4 19.Nd4+–) 19.Nd4 White gets the initiative 19...Nc5 20.Nc6 Rd1 21.Rd1 Re8? (21...Nfe4 22.Bd4+–) 22.Na7 (better 22.a6+–) 22...ba5 23.Ra1 (better 23.Bf3+–) 23...Nb3? (better 23...a4+–) 24.Ra3+– Nd2 25.Ra5 Nfe4 26.Bg7 Kg7 27.f3?? (27.Nc6!? Nc3 28.Bd3 Nd1+–) 27...Nc5? (27...Nc3!? 28.Kf2 Ne2+–) 28.e4 (28.Kf2 Ndb3 29.Ra3 Ra8+–) 28...Ncb3 (28...f5 29.Nc6 fe4 30.Kf2 Nd3 31.Bd3 ed3 32.Ra7 Re2 33.Kg3 Nc4 34.Rc7 Kf6 35.Rh7–/+) 29.Ra2 Rd8? (better 29...f5 30.Nc6 fe4 31.fe4 Re4+–) 30.Nc6 Rd6 31.Ne5?? (31.Ra7 Nc1 32.Bf1 Nf1 33.Kf1 Rd1 34.Kf2 Rd2 35.Ke3 Re2 36.Kd4 Rd2 37.Kc3 Rg2 38.Rc7 Rh2+–) 31...f6 (31...Nc1 32.Ra7 Ne2 33.Kf2 Nc3 34.Rc7 Kf6 35.Nf7 Rd4 36.e5 Ke6+–) 32.Nd3+– Nd4 (32...Nc4 33.Ra7 Rd7 34.Nf4+–) 33.Rd2 Ne2 34.Re2 Rd3 35.Rc2 (35.Ra2!? Kf8+–) 35...Rd1 36.Kf2 Rd7 (36...Kf7 37.c5+–) 37.Ke3 Kf7 38.Rd2 Ke6 (38...Re7+–) 39.Rd7 Kd7 40.Kd4 Kd6 (40...h5 41.e5 h4 42.ef6+–) 41.c5 Kd7 42.Kd5 White prepares c6 42...g5 43.g4 h6 44.c6 Ke7 45.Kc5 Ke6 46.b6 cb6 47.Kb6 Ke5 48.c7 Kf4 49.c8Q Kf3 50.Qf5 Kg2 51.Qf6 Kh2 52.Qh6 Kg3 53.Qg5 Kf3 54.Qf5 Kg3 55.g5 Kh4 (55...Kh2 56.g6 Kg2 57.g7 Kh2 58.g8Q Kh1 59.Qh5) 56.g6 Kg3 57.g7 Kh4 58.e5 Kg3 59.g8Q (59.g8Q Kh4 60.Qgg5) 1–0. BeepBeepImAJeep (2720) – guillaume_v (2000), lichess.org, 2016.

5.c4

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

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

5.d4 ed4

6.Bd4= Nbd7 7.Nf3 Be7 8.Be2 0-0 9.0-0 Nb6 (9...a6 10.ba6 ba6 11.c4=) 10.a4 c5 11.Bb2 Rc8 (11...Nc4 12.Bc4 Bc4 13.Re1=) 12.a5 (12.Ng5 Qe8+=) 12...Nbd5 (12...Nc4 13.Bc3=) 13.c4 (13.Nbd2 Nc7+=) 13...Nc7 (13...Nb4 14.Nc3=) 14.Nbd2 (14.Qc2 d5+=) 14...Bg4 (14...d5 15.Qb1+=) 15.e4 b6 (15...Nd7 16.Re1+–) 16.a6 (16.Re1 Re8+–) 16...Ne6 17.h3 Bf3 18.Bf3 (worse 18.gf3 Nf4–/+) 18...Ng5 (18...Nd7 19.Nb1+=) 19.Ra3+– Nf3 20.Rf3 (20.gf3?! Nh5=) 20...Nd7 21.Rg3 (21.Rd3 Bf6 22.Bf6 Qf6+–) 21...Bf6+= 22.Bf6 Qf6 23.Qg4 Ne5 24.Qe2 (24.Qf5 Qh4+–) 24...Rfe8+= 25.f4 Ng6 26.Qg4 Qh4? (better 26...Qd4 27.Rf2 Qa1 28.Kh2 Qd4+=) 27.Qd7?? (better 27.Qh4!? Nh4 28.f5+–) 27...Nf4 (better 27...Qg3 28.Rf2 Nf4-+) 28.Rg4?? (better 28.Kh2 Qh6 29.Rgf3+–) 28...Ne2=+ 29.Kh2 Threatening mate: Qxf7 29...Qe7 30.Qf5 Qe5 31.Qe5 (31.g3 Rc7=+) 31...de5–/+ 32.Rf2 Nd4 33.Rg3 Re6 34.Rg4 (better 34.Nf1–/+) 34...Kh8?? (better 34...Rd8–/+) 35.Rf7+– Rg6 (35...g6 36.Ra7 Rf8+–) 36.Rg6 hg6 37.Ra7 Ne2 (37...Rd8 38.Rb7 Nb5 39.cb5 Rd2 40.Rb6+–) 38.Rb7 Rd8 (38...Kh7 39.Nf3 Ra8+–) 39.Nf3 (39.Nf3 g5 40.a7+–) 1–0. aravind555 (1875) – GMIBueno (1820), lichess.org, 2020.

6.Bd4= Be7 7.Ne2 0-0 8.Nf4 h6 (8...c5 9.Bb2=+) 9.Ne6 fe6 10.Bc4 (10.Bd3 c5 11.Bb2 d5=) 10...d5=+ 11.Bb3 (11.Bd3 c5 12.bc6 Nc6=+) 11...Kh8 (11...c5 12.bc6 Nc6 13.0-0=+) 12.0-0 Bd6 (12...c5 13.bc6 Nc6 14.c4=+) 13.Nd2 (13.c4 c5 14.Bb2 a6+=) 13...Nbd7 (13...c5 14.bc6 Nc6 15.c4=) 14.e4 (14.c4 a6=) 14...e5 15.Bb2 d4 (15...de4 16.Qe2=) 16.c3 dc3 17.Bc3 Nc5 18.Bc2 b6 (18...Qe8 19.Qe2=) 19.a4 Qd7 20.Bb4 (20.Qe2 a6+=) 20...Qg4 The pressure on e4 grows (20...Rad8 21.Nc4=) 21.Bc5 (21.Qg4 Ng4 22.Nc4 Rad8+–) 21...Bc5+= 22.Qg4 (22.Nb3 Rad8 23.Qg4 Ng4 24.Nc5 bc5+=) 22...Ng4= 23.Nc4?? (better 23.Nf3=) 23...Nf2-+ 24.Rf2?? (24.g3 Bd4 25.Kg2 Ba1 26.Ra1–/+) 24...Bf2 (better 24...Rf2 25.Ne5 Rc2 26.Kh1 Bd4 27.Nf7 Kg8-+) 25.Kh1 Bd4 26.g3 (26.Rd1-+) 26…Ba1 (26...Ba1 27.Kg2 Rad8-+) 0–1. aravind555 (1680) – Jamal77 (1680), lichess.org, 2020.

5.d4 e4

6.c4 d5 7.c5 c6 8.a4 cb5 (8...Be7 9.Nd2=+) 9.ab5= b6 10.Ne2 (10.Ba3!?=) 10...bc5–/+ 11.Nf4 (11.dc5 Bc5 12.Nd4 0-0=+) 11...c4 12.Ne6 fe6 13.Be2 a6 14.ba6 (better 14.Qa4–/+) 14...Ra6?? (14...Na6 15.Nc3–/+) 15.Bh5?? (better 15.Ra6 Na6 16.Qa4 Kf7 17.Qa6+–) 15...g6 (better 15...Nh5 16.Qh5 g6-+) 16.Bg4?? (better 16.Ra6!? Na6 17.Qa4 Kf7 18.Qa6–/+) 16...Ra1 (better 16...Bb4!? 17.Nd2 Ra1 18.Ba1-+) 17.Ba1 Qb6 (better 17...Bb4!? 18.Bc3 Qa5-+ (18...Ng4?! 19.Bb4 Qh4 20.g3=+)) 18.0-0 Bd6 19.Be6 (19.Nc3!?–/+) 19...Bh2!-+ 20.Kh2 Qe6 21.Qa4 Kf7 22.Qa7 (22.Nc3 Qd6 23.Kg1 Ng4-+) 22...Nfd7 (22...Qe7 23.Qb6-+) 23.f3 Kg7 (23...ef3 24.Rf3 Ke7 25.Bb2-+) 24.fe4–/+ de4?? The passed pawn on d4 will quickly become a dangerous weapon (24...Qe4!? 25.Nc3 Qh4 26.Kg1 Qg5–/+) 25.Nc3 (25.d5 Qe5 26.Be5 Kh6 27.Bb8 Rb8 28.Qd7 Rb5 29.Rf7 Rb7 30.Qh3 Kg5 31.Kg3 h5 32.Qh4 Kh6 33.Qf4 g5 34.Qd6) 25...Kh6 (better 25...Rf8!? 26.Rf8 Kf8=+) 26.Rf4 Attacks the isolani on e4 26...g5 27.Re4 (27.d5 Qd6 28.Ne4 Qd5 29.Ng5+=) 27...Qf5 (27...Qd6 28.Kg1 Nc6 29.Qa6+=) 28.Qb7 (better 28.d5 Rf8 29.Qc7+–) 28...Nf6=+ 29.d5 Ne4 (29...Nbd7!? 30.Qa6 Qg6 31.Qc4 Ra8=+) 30.Ne4= Qe4 31.Bh8 Threatening mate: g4 31...Qh4 32.Kg1 The mate threat is Qg7 32...Qe1 33.Kh2 Qh4 34.Kg1 Qe1 35.Kh2 Qh4 ½–½. aravind555 – avi20072008, lichess.org, 2019.

6.c4 d5 7.cd5 Qd5 8.Nc3= Bb4 9.Nge2 (9.Qa4 Bc3 10.Bc3 c6=) 9...0-0 (better 9...Qb5! 10.Nf4 Bc4–/+) 10.Nf4 Bc3 11.Bc3 Qf5 12.g3 (12.Ne6 Qe6 13.Rc1 Rd8= (13...Qa2? 14.Bb4 Qb2 15.Bf8 Kf8 16.Rc7+–)) 12...Nd5 13.Bg2 (13.Qc2!? c6 A) worse 14.Ne6 fe6 (worse 14...Qe6 15.Qb3=+) 15.bc6 A1) 15...Nc3?? 16.cb7 Nd7 17.ba8Q (17.Qc3?! Qf2 18.Kd1 Rab8=) 17...Ra8 18.Qc3+–; A2) 15...Nc6–/+; B) 14.Bh3=) 13...Nc3–/+ 14.Qc2 Nb5 (14...g5 15.g4 Qg4 16.Bh3=+) 15.Be4=+ Qf6 (15...Nd4!? 16.ed4 Qa5 17.Kf1 Nc6 18.Ne6 fe6 19.Bc6 bc6 20.Qc6 Qd2–/+) 16.Bb7= Nd7 17.Ba8 Ra8 18.Qc6 Rb8 19.Ne6 (19.a4 Nd6=) 19...Qe6 20.Qe6 fe6 21.0-0 (21.Rc1 e5 22.a4 Nd6 23.Rc7 Rb1 24.Ke2 Rh1 25.Rd7 Ne4=) 21...Nc3=+ 22.Rfc1? (better 22.Kg2 c5 23.Rfc1 cd4 24.ed4=+) 22...Ne2-+ 23.Kg2 Nc1 24.Rc1 Rb7 25.Kf3 Kf7 26.Ke4 Ke7 27.Rc5?? (better 27.Rc6-+) 27...Nc5 28.dc5 Rb2 29.a4 (29.f3 Ra2 30.h4 a5-+) 29...Rf2 30.h4 Ra2 31.Kd4 (31.a5 Ra5 32.Kd4 Ra4 33.Kd3 Rg4-+) 31...Ra4 32.Kd3 a5 33.Kc3 Rg4 34.Kb3 Kd7 35.Ka3 (35.Kc3 Rg3 36.Kd2 Kc6-+) 35...Kc6 36.Kb3 Kc5 37.Ka3 Rb4 (better 37...Rg3 38.Kb2-+) 38.Ka2 Re4 39.Kb3 Re3 40.Ka4 Rg3 41.Ka5 (41.h5 e5 42.h6 gh6 43.Ka5 Ra3) 41...Rh3 (41...Ra3) 42.Ka6 Rh4 (42...Kc6 43.Ka7 Ra3 44.Kb8 h5 45.Kc8 Ra8) 43.Kb7-+ e5 44.Kc7 e4 (44...Rd4 45.Kb7 Rd7 46.Kb8 Kc6 47.Kc8 e4 48.Kb8 Rd8 49.Ka7 e3 50.Ka6 Ra8) 45.Kd7 e3 46.Ke7 (46.Ke8 Rf4 47.Ke7 e2 48.Kd8 Kc6 49.Ke7 e1Q 50.Kd8 Rf8) 46...e2 47.Kf7 (47.Kd8 e1Q 48.Kc8 Kc6 49.Kb8 Rb4 50.Kc8 Qe8) 47...e1Q 48.Kg7 (48.Kf8 Rf4 49.Kg8 Qe8 50.Kh7 Qf7 51.Kh8 Rh4) 48...Rf4 49.Kh7 Qg3 50.Kh6 Rh4 0–1. aravind555 (1625) – mike24zl (1610), lichess.org, 2020.

6.c4 d5 7.cd5 Nd5 8.a3=+.

6.c4 d5 7.cd5 Nd5 8.Nc3 Bb4 9.Qc2 0-0 10.0-0-0 (better 10.a3!? Ba5 11.Nge2=+) 10...Nc3 11.Bc3 Bc3 12.Qc3 Ba2 13.Bc4 (13.Kd2 Bd5-+) 13...Bc4 14.Qc4 Nd7 (14...a5 15.Ne2-+) 15.Ne2 (15.Qd5 Qe7 16.Kd2 Nb6 17.Qb7 Qb4 18.Ke2 Qb5 19.Ke1 Qa5 20.Kf1 Nd5-+) 15...c6 (15...a6 16.Qc2-+) 16.bc6 Rc8 17.d5 bc6 18.dc6 (18.d6 Re8 19.Ng3 Nf6–/+) 18...Qf6 19.Nd4 (better 19.Qe4 Rc6 20.Kd2 Rd6 21.Ke1 Rd1 22.Kd1 Qa1 23.Nc1-+) 19...Ne5 20.Qa6 (20.Qe2 Rb8 21.Qa2 Nc6-+) 20...Nd3 (better 20...Nc6 21.Kd2 Nd4 22.Qf6 Nb3 (22...gf6?! 23.ed4 Rfd8 24.Ke3=+) 23.Ke1 gf6-+) 21.Kd2?? (better 21.Rd3 ed3 22.Rf1-+) 21...Nf2 (better 21...Qf2 22.Ne2 Rfd8 23.Qc8 Rc8-+) 22.Rhf1–/+ Rfd8?? (better 22...Qh4 23.g3 Qh2–/+) 23.Ke2+– Qh4 (better 23...Rc6!? 24.Qc6 Qc6 25.Nc6 Rd1 26.Rf2 Rg1+–) 24.Rf2+– Qh2 25.Rdf1 (better 25.Qa7!? Qh5 26.Ke1 Rc6 27.g4+–) 25...Qh5+– 26.Ke1 Qc5 27.Rf7 (better 27.Rc2 Qg5 28.Nf5+–) 27...Qc1?? (27...Qb4 28.Kf2 Qd2 29.Qe2 Rd4 30.ed4 Qd4 31.Qe3 Qe5+–) 28.Kf2+– Qd2 29.Kg3 (better 29.Qe2 Rd4 30.ed4 Qd4 31.Qe3+–) 29...Qe3= 30.Kh2 (better 30.Kh4 Qh6 31.Kg4 Qg6 32.Kh4=) 30...Qd4–/+ 31.c7 (better 31.Rd7 Qe5 32.Kg1 Qc5 33.Kh1–/+) 31...Qd6?? (better 31...Qe5 32.Kh1 Rc7 33.Rc7 Qc7 34.Qe6 Kh8 35.Qe4 a5-+) 32.Kh1?? (better 32.Qd6 Rd6 33.Rf8 Rf8 34.Rf8 Kf8 35.c8Q Ke7 36.Qb7 Kf6 37.Qe4+–) 32...Qc7 (better 32...Qa6 33.cd8Q Rd8-+) 33.Rc7+– (33.Rc7 Rc7 34.Qe6 Kh8 35.Qe4+–) 1–0. aravind555 – zenador, lichess.org, 2018.

6.Nd2 d5 7.c4 Be7 (7...Bb4 8.Ne2=+) 8.cd5 Bd5 9.Bc4 (9.Ne2 0-0=) 9...0-0 10.Ne2 Bc4 11.Nc4 Qd5 (11...a6 12.Qb3=+) 12.Qb3= Nbd7 13.Nf4 Qg5 14.0-0 Nb6 15.Nd2 (15.Rac1 Nc4 16.Rc4 Bd6=) 15...Bd6=+ 16.Ne2 (16.Nh3 Qd5=+) 16...Qh6 (16...Bh2 17.Kh2 Qh5 18.Kg1 Qe2 19.Qc2–/+) 17.Ng3 (17.h3 a6=+) 17...Ng4–/+ Threatening mate... how? 18.h3 Nf6?? (18...Bg3 19.fg3 Qe3 20.Qe3 Ne3–/+) 19.Qc2?? (19.Nde4 Ne4 20.Ne4 Rfe8 21.Nd6 Qd6+–) 19...Rfe8?? (better 19...Bg3 20.fg3 Qe3 21.Kh2 Rfe8-+) 20.Nde4+= Ne4 21.Ne4 Nd5 (21...Qg6 22.f3+=) 22.Nd6 cd6 23.Ba3 (23.Qf5 Qe6 24.Qe6 Re6+–) 23...Rac8 (23...Qe6 24.Rfe1+=) 24.Qa4 (24.Qf5 Qe6 25.Qe6 Re6+–) 24...Nc3+= 25.Qa7 (better 25.Qa5!?+=) 25...Ne2 (25...Ra8!? 26.Qb7 Ra3=+) 26.Kh1 Re4?? (better 26...Ra8 27.Qb7 Ra3=+) 27.Qb7+– Rce8 (27...Ree8 28.Qa6+–) 28.Qd5 R4e6 29.b6 (better 29.Bb4!? Qg6 30.Qc4 Ng3 31.fg3 Re3+–) 29...Nc3 30.Qf3 d5 31.Bc5 (31.Rac1 Rc6+–) 31...Ne4 (31...Qg6 32.Qf4 Rf6 33.Qc7+–) 32.a4 (better 32.Qf5 Qh4+–) 32...Rf6 33.Qe2 Ng5? (33...Rf2 34.Rf2 Ng3 35.Kg1 Ne2 36.Re2 Qc6+–) 34.Qg4 Ne6 35.a5 Rg6 36.Qf3 Nc5 (36...Ng5 37.Qf5 (37.Qd5?? Nh3 38.Ra2 Nf2 39.Kg1 Nh3 40.Kh1 Nf4 41.Kg1 Nd5-+) 37...Rf6 38.Qg4+– (38.Qd5?? Nh3 39.g3 Nf4 40.Kg1 Nd5-+)) 37.dc5 Re4 (37...Rd8+–) 38.a6 Rf6 39.Qg3 (39.Qe4 de4 40.a7 g5+–) 39...Re8 40.b7 (better 40.a7 Rb6 41.cb6 Qb6+–) 40...Ra6 41.Ra6 (41.b8Q Rae6 42.c6 g6+–) 41...Qa6 42.b8Q Qe6 43.Qe8! Qe8 44.c6! g6 (44...Qc6 Deflection from b8 45.Qb8 The nicest combinations are those leading to mate) 45.c7 Qc8 46.Qd6 (46.Rb1 Kg7 47.Rb8 Qa6 48.c8Q Qa1 49.Kh2 Qg1 50.Kg1 Kh6 51.Qh4 Kg7 52.Qf8) 46...d4 47.Qd8 Qd8 48.cd8Q Kg7 49.ed4 (49.Qd4 Kh6 50.Qf4 Kg7 51.Rd1 h6 52.Rd7 h5 53.Qf7 Kh6 54.Qf4 g5 55.Qd6) 49...Kh6 50.Re1 (50.Qf6 Kh5 51.g3 Kh6 52.d5 Kh5 53.Qh4) 50...f5 (50...Kg7 51.Re8 Kh6 52.Qf6 Kh5 53.Re5 Kh6 54.Qf7 g5 55.Re6) 51.Re8 (51.Qh4 Kg7 52.Re7 Kf8 53.Qf6 Kg8 54.Qg7) 51...Kh5 (51...f4 52.Qh4 Kg7 53.Re7 Kf8 54.Qf6 Kg8 55.Qg7) 52.g3 h6 (52...g5 53.Re6 g4 54.Qh4) 53.Qh4 1–0. aravind555 (1620) – vmark80 (1645), lichess.org, 2019.

5.Nf3

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

4.b5 Be7

5.a4 Bd7 6.c4 c6 7.Nf3 cb5 8.cb5 a6 9.Be2 ab5 10.ab5 Ra1 11.Ba1 b6 12.Nc3 d5 (12...0-0 13.e4=) 13.0-0 (13.Ne5 Bf5+/-) 13...d4 (better 13...Bd6!?=) 14.ed4+/- ed4 15.Nd4 Bc8 16.Nc6 Nc6 17.bc6 Qc7 18.d4 Qc6?? (18...Bd6 19.h3 0-0+- (19...Qc6?? 20.Bb5 Qb5 21.Nb5+-)) 19.Bb5+- Bd7 (19...Qb5 20.Nb5 0-0 21.d5+-) 20.Bc6 Bc6 21.d5 Bb7 (21...Bd7 22.d6 Bd8 23.Re1 Kf8 24.Qf3+-) 22.d6 Bd8 (22...Bf8 23.Qa4 Nd7 24.Qa7 Bd6 25.Qb7+-) 23.Re1 (better 23.d7 Nd7 24.Re1 Be7+-) 23...Kf8 (23...Kd7 24.Qa4 Bc6 25.Nb5+-) 24.Qe2 (better 24.d7 g5 25.Qd6 Kg7+-) 24...g6 25.Nb5 Kg7 (25...Bc6 26.Qc4 Bb5 27.Qb5+-) 26.d7 Bc6 27.Nd6 Bd7 28.Qf3 Bg4 (28...Rf8 29.Nb7 Bf5+-) 29.Qg4 h5 30.Qf4 (30.Qf4 b5 31.Nb7 Re8 32.Re8 Be7 33.Re7 Kh7 34.Rf7 Kg8 35.Qf6 b4 36.Qg6) 1-0. BeepBeepImAJeep (2575) – maurotuz, lichess.org, 2017.

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

5.Bc4 Nbd7 6.Ne2 0-0 7.0-0 Nc5 8.d4 ed4 9.Bd3? de3–/+ 10.fe3 Bg4 11.h3 Bh5 12.Qe1 Nfe4 13.Ng3?? Bh4-+ 14.Qb4 Ng3 0–1. pumpkin (2355) – mmushfiq, net–chess.com, 2010.

5.Bc4 e4 6.Ne2+=.

5.Bc4 Be6 6.Bb3 (6.Be6 fe6 7.Nf3 0-0+=) 6...0-0+= 7.Ne2 (7.Be6 fe6 8.Nf3 e4+=) 7...c6 (7...a6 8.d4 e4 9.d5+=) 8.bc6 Nc6 9.0-0 Na5 (9...Bf5 10.d4+=) 10.Be6 (10.f4 Nb3 11.ab3 e4=) 10...fe6+= 11.d3 (11.Na3 Nc6+=) 11...b6 (11...Qb6 12.Qc1+=) 12.Nd2 (12.f4 Rc8=) 12...Rc8 13.c4 Nc6 14.Ng3 Nb4 (14...d5 15.Rc1=) 15.Nb3 (15.Qb3 d5=) 15...a5 (15...d5 16.a3 Nc6 17.Rc1=) 16.a3 Nc6 17.Nd2 d5 18.Qe2 (18.Rb1 Qe8=) 18...Qd7 (18...Bd6 19.Rab1=) 19.cd5 (19.Rfc1!?=) 19...ed5+= 20.Rac1 e4 (better is 20...Bd6+=) 21.de4+/- Ne4 (21...de4 22.Nge4 Ne4 23.Ne4+/-) 22.Nde4 de4 23.Ne4 (23.Qc4 Kh8+/-) 23...Qe6 24.f3 Qb3 (24...Ne5 25.Be5 Qe5 26.Rc8 Rc8 27.a4+/-) 25.Qc4 (25.Rc3!? Qe6 26.Qc4 Qc4 27.Rc4+/-) 25...Qc4 26.Rc4 Ne5?? (better is 26...b5 27.Rc2 b4+/-) 27.Rc8+– (27.Be5 Rc4 28.Rb1 Ba3 29.Rb6 Bc5 30.Nc5 Rc5+=) 27...Rc8 28.Be5 Ba3 29.Rb1 (29.Rd1 Bc1+–) 29...Bb4 30.Bd6 Rc3 (30...Bd6 31.Nd6 Rc6+–) 31.Bb4 (31.Bb4 ab4 32.Nc3 bc3 33.Rb6+–) 1–0. Fredek (2090) – Porsche, Freundschaftspartie, 5m + 0s, 2005.

5.d4 Nbd7 6.de5 Ne5 7.Be5 (7.Nf3!? Nf3 8.Qf3=) 7...de5=+ 8.Qc1 (8.Qd8 Kd8 9.Bc4 Ne4=+) 8...0-0 9.c3 (9.Nd2 Bd6–/+) 9...Qd5 10.Be2 ( 10.Nd2–/+) 10...Qg2-+ 11.Bf3 Qg5 ( 11...Qg6 12.Ne2 e4-+) 12.Nh3?? (12.Nd2-+) 12...Qh4 13.Bg2 Bh3 14.Bh3 Qh3 15.Nd2 Qg2 16.Rf1 Rad8 17.Nc4 Qd5 18.Nb2 Ba3 19.c4 Qc5 20.Qc2 Bb4 (21.Ke2 e4-+; 20...e4 21.Rd1 Bb4 22.Ke2-+) 0–1. pinecrest1981 – hillary01, Caissa's Web, 2004.

5.d4 e4 6.d5 0-0 7.Nc3 (7.Ne2 a6 8.Nbc3 ab5 9.Ng3 c6 10.dc6 Nc6 11.Bb5 d5 12.0-0 Be6; 7.Nh3 a6 (7...Nbd7 8.Nc3 Ne5 9.Be2 Bh3 10.gh3 Qd7 11.Qd4 Qh3 12.Ne4 Qg2; 7...Bg4 8.Qd4 a6 9.Nc3 ab5 10.Ne4 Ra4 11.c4 bc4 12.Nf4 Rb4) 8.Nc3 ab5 9.Bb5 Bh3 10.gh3 c6 11.Be2 Nbd7 12.Qd4 c5) 7...a6 (7...c5 8.Nge2 a6 9.Ng3 ab5 10.Bb5 Na6 11.Be2 Qa5 12.0-0 Nc7; 7...Bf5 8.Nge2 Nbd7 9.Ng3 Bg6 10.Be2 Nc5 11.0-0 Qd7 12.Qd4 h5; 7...Bd7 8.Nge2 c6 9.a4 Qa5 10.dc6 bc6 11.Qd2 Qb6 12.Nf4 g5; 7...Nbd7 8.Nge2 Nc5 9.Ng3 c6 10.bc6 bc6 11.dc6 Rb8 12.Rb1 Qa5) 8.Nge2 (8.a4 ab5 (8...Nbd7 9.Nge2 Ne5 10.Nd4 Bg4 11.Be2 ab5 12.ab5 Ra1) 9.ab5 Ra1 10.Qa1 Nbd7+= 11.Nge2 Nc5 12.Nd4 Ng4) 8...ab5 9.Ng3 b4 (9...c6 10.Qd4+= (10.dc6 Nc6 11.Bb5 Bg4 12.Qd2 d5) 10...Qa5 11.dc6 Nc6 12.Qd2 Qb4) 10.Nce4 Ne4 (10...c6 11.c4+= (11.Bc4 cd5 12.Bd5 Nd5) 11...bc3 12.Nc3 Qa5; 10...Nbd7 11.Be2 Nb6 12.a3 ba3) 11.Ne4= Bf6?? (better is 11...f5 12.Qd4 (12.Ng3 Bf6) 12...Rf7=) 12.Nf6+– gf6 13.Bd3 (13.Qd4 Nd7+–) 13...f5 14.Qh5 f6 15.g4 (15.Qh4 c5+–) 15...Qe7 16.gf5 Qg7 (16...Kh8 17.Qg4+–) 17.Ke2 Qg5?? (better is 17...Kh8+–) 18.Rag1 h6 19.Rg5 hg5 20.Qg6 Kh8 21.Qg5 Nd7 (21...Bf5 22.Qh5 Kg7 23.Rg1 Bg6 24.Qg6 Kh8 25.Qg7) 22.Rg1 1–0. pierre – oppowiqidd, internet, 2010.

5.Be2 b6 6.Nf3 Bb7 7.0-0 e4 (7...a6 8.a4=) 8.Nd4+= 0-0 9.d3 (9.f3 a6 10.Nf5 Ne8+=) 9...c5 (9...a6 10.c4=) 10.Nf5+= d5 (10...a6!?+=) 11.de4+– Ne4 12.Bg7 Re8 13.Bh5 Nf6 (13...Bc8 14.Ne7 Qe7 15.Bb2+– (worse 15.Qd5 Bb7 16.Qf7 Qf7 17.Bf7 Kf7=+)) 14.Bf6 (14.Nc3 a6+–) 14...Bf6+– 15.c3 Qd7 16.Qf3 d4 (16...Re5 17.Nh6 Kg7 18.Ng4+– (18.Bf7?! d4 19.Qf4 Re4 20.Nf5 Kf8 21.Qd6 Kf7 22.Qd7 Nd7=)) 17.Nh6 (17.Qg3!? Kf8 18.Bf3 Bf3 19.Qf3 dc3+–) 17...Kh8?? (better 17...Kg7 18.Qf4 Re4 19.Nf5 Kg8 20.Qg3 Kf8+–) 18.Qf6 1–0. GuestFKFW – GuestJQRT, freechess.org, 2020.

5.Be2 c6 6.c4 0-0 7.Nf3 Nbd7 (7...e4 8.Nd4=+) 8.0-0= a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Qc7 12.d4 (12.Nc3 d5=) 12...e4 13.Nfd2 cb5 14.cb5 d5 15.f3 (15.Qc1 Qb8=) 15...Bd6=+ 16.g3 ef3 17.Bf3 Re8 18.Nc3 Exerts pressure on the isolated pawn 18...Nb6 (18...Bg3 19.hg3 Qg3 20.Kh1 Re3 21.Ne2 (21.Nd5 Nd5 22.Qc2 N7b6-+) 21...Qh3 22.Kg1–/+) 19.e4 de4 20.Nde4 Ne4 21.Be4 Bb4 (21...f5 22.Nd5 Nd5 23.Bd5 Kh8 24.Qh5=) 22.Nd5 (22.Bh7!? Kh7 23.Qb1 Kg8 24.Qb4+=) 22...Nd5= 23.Bd5 Re7 (23...Be6 24.Be6 Re6 25.Qd3=) 24.Qb3 (24.Qc1=) 24...Bd2 (better 24...Bh3!? 25.Rd1 Bg4=) 25.b6+– Qd7 26.Bb2 Qe8 27.Ba3 Bh3 28.Be7 Bf1 29.Qa3 (better 29.Bb4!? Bb4 30.Qb4+– (30.Kf1?! Qe1 31.Kg2 Qe2 32.Kh3 Qh5 33.Kg2 Qe2 34.Kh3 Qh5 35.Kg2 Qe2=)) 29...Ba6= 30.Qd6 (30.Kg2 Bg5 31.Bg5 Qe2 32.Kh3 Qh5 33.Kg2 Qe2 34.Kh3 Qh5 35.Kg2 Qe2=) 30...Be3 (30...Bg5 31.Bf7 Kf7 32.Qd5 Ke7 33.Qg5 Kf8 34.Qf5 Kg8 35.Qd5 Qf7 36.Qd8 Qf8 37.Qf8 Kf8-+) 31.Kg2= Bd4 32.Qd8 (32.Qf4 Qe7 (32...Bb6 33.Bf7 Kh8 34.Be8 h6 35.Bg6 Bc4 36.Qf8 Bg8 37.Bf6 gf6 38.Qf6) 33.Qd4 h6=) 32...Qd8=+ 33.Bd8 Kf8 34.Kf3 Ke8 35.Bc7 f6 36.Ke4 Bg1 37.h4 Kd7 38.g4 Bf1 39.Kf3 Ba6 40.Ke4 Bc5 41.Bg8 (41.h5 Bd6 42.Bd6 Kd6–/+) 41...h6 (41...Kc6 42.g5 fg5 43.hg5 Bb6 44.Be5–/+) 42.Kd5 Ba3 43.Be6 Ke7 44.Bf5 Bb5 45.h5 (45.Bf4!?=+) 45...Bc6–/+ 46.Kc4 Bd7 (46...Bd6!?–/+) 47.Kd5 (47.Bd7 Kd7 48.Kd5 Bc1=+) 47...Bc6 48.Kc4 Bd6 49.Kd4 Bd7 50.Ke4 Bf5 (50...Be6 51.Be6 Ke6 52.Bd6 Kd6 53.Kf5=) 51.Kf5=+ Bc7 (51...Bb4 52.Kg6 Kf8 53.Bf4=+) 52.bc7= Kd7 53.Kg6 b5 54.Kg7 b4 55.Kh6 b3 56.Kg7 b2 57.h6 b1Q 58.h7 ½–½. Jacobs,Jean – Campeert,Julien, Belgian championship, 1970.

5.Be2 h6 6.Nf3= 0-0 7.a4 c6 8.0-0 cb5 9.ab5 Bd7 10.d4 e4 11.Nfd2 Qb6 (11...d5 12.c4+=) 12.c4 d5 13.Nc3 dc4 14.Bc4 a6 (14...Bd6 15.Qc2 Qc7 16.h3+/-) 15.Qb3+/- Be6 16.Na4 Bc4 (16...Qd6!? 17.Be6 Qe6 18.Qe6 fe6+/-) 17.Nb6 Bb3 18.Na8 Be6 19.Nc7 Bd7 20.ba6 Na6 21.Na6 ba6 22.Ba3 Ba3 23.Ra3 Bb5 24.Rc1 Rd8 25.Nb3 Nd7 26.Rc7 Nb6 (26...Kf8+-) 27.Nc5 Nc4 28.Ra2 Ra8 (28...Nd6 29.Na6 Ra8 30.Nb4+-) 29.Ne4 f6 (29...Rb8 30.Nc5+-) 30.Nc5 (30.Nc3 Rb8 31.Nb5 ab5+-) 30...Kh7 31.e4 Re8 (31...Nd6 32.f4+-) 32.f3 Ne3 33.Na6 Ng2 (33...Ra8 34.Nb4 Ra2 35.Na2 Nd1+-) 34.Kg2 Re4 (34...Ra8 35.Nb4 Ra2 36.Na2 h5+-) 35.fe4 Ba6 36.Ra5 (36.Ra5 Bd3 37.Kf3+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nf3 b6 6.Be2 Bb7 7.0-0 0-0 8.c4 Nbd7 9.d4 ed4 10.Qd4 Nc5 (10...a6 11.Nc3 (11.h3 Nc5 12.Nc3 Qd7 13.Rfd1 Rfe8 14.Rd2 h6 15.Qf4) 11...Nc5 12.h3 Qd7 13.Rad1 h6 14.Rd2 Nce4 15.Ne4; 10...h6 11.Nc3 (11.Qf4 Nc5 12.Nc3 a6 13.Nd4 Qd7 14.Nf5 Rfe8 15.Rad1) 11...Nc5 12.Nd2 a6 13.a4 Nfd7 14.Nd5 Bf6 15.Nf6) 11.a4? (better is 11.Nc3= a6 12.h3 Qd7 13.Rad1 h6 14.Qf4 Nfe4 15.Ne4; 11.Nfd2 Na4 12.Bf3 Qc8 13.Na3 Nb2 14.Bb7 Qb7 15.Qb2) 11...Nb3–/+ 12.Qc3 Na1 13.Ba1 (13.Nbd2 Qd7-+) 13...Re8 14.Nh4 (14.Nbd2 Qd7-+) 14...Bf8 (14...a6 15.Nd2-+) 15.Nf5 Ne4?? (better is 15...a6 16.Nd2 ab5 17.ab5 Ra2-+) 16.Nh6= Kh8 17.Nf7 Kg8 ½–½. Schmeding,Irene – Mull,Dieter, Bahn–chT Fuessen, 1993.

5.g3 c6 6.a4 a6 7.ba6 Na6 8.Bg2 Nc5 9.d4 ed4 10.ed4 Nce4 11.Ne2 d5 12.0-0 Bg4?? 13.f3+– Ng3 14.Ng3 Bh5 15.Nh5 Nh5 16.f4 0-0?? 17.Qh5 (17…Qb6 18.Bc3+–) 1–0. MasterofDisaster – cip86, Live Game Caissa's Web, 2004.

5.h3 0-0 6.d4 a6 7.ba6 ba6 8.de5 Ne4 9.Bd3 f5?? 10.Nf3 Bb7 11.0-0 Nd7 12.Nbd2 Ndc5 13.Ne4?? fe4-+ 14.ed6 Bd6?? 15.Bc4+= Kh8 16.Ng5?? Qg5-+ 17.Bd4 Rad8 18.Rb1 Ba8 19.Qe2 Nd7 20.Ba6 Be5 21.c3 Nf6 22.Rb5 Nd7?? 23.Be5?? Ne5-+ 24.Kh2 Rf6 25.h4 Qh4 26.Kg1 Ng4 27.Rd1 Qh2 28.Kf1 Qh1# 0–1. MasterofDisaster – distaff, Live Game Caissa's Web, 2004.

5.h4 Be6 6.c4 0-0 7.h5 c5 8.h6 g6 9.Nh3 a6 10.a4 Ng4 11.Nc3 Nh6 12.Qf3 Qc7 13.a5 Nd7 14.Ne4 f6 15.Nc3 ab5 16.Nb5 Qc8 17.Qg3 Nf5 18.Qh2 Rf7 19.f3 b6 20.Nf2 Bf8 21.g4 Nh6 22.Ne4 Qc6 23.g5 f5 24.Nec3 Ra5 25.gh6 Ra1 26.Ba1 Qf3 27.Nd6 Bd6 28.Be2 Qa8 29.0-0 Qf8 30.Nb5 Bb8 31.Qh4 Nf6 32.d3 Bd7 33.Nc3 Bc6 34.Bb2 Ra7 35.e4 f4 36.Nd5 Bd5 37.ed5 Ra2 38.Rb1 Qe7 39.Bf3 Kf8 40.Qh3 Ng8 41.Qc8 Qe8 42.Qb7 Nh6 43.Qh7 Ng8 44.Bc3 Ra7 45.Qh4 Bc7 46.Be4 Bd8 47.Qh8 Bf6 48.Qh3 Ra3 49.Be1 Bd8 50.Qh8 Qe7 51.Bd2 Qg5 52.Kh1 Qh4 53.Qh4 Bh4 54.Rb6 g5 55.Re6 g4 56.Re5 Ra1 57.Kh2 Ra2 58.Rf5 Ke7 59.Rf4 Rd2 60.Kg1 Nf6 61.Bf5 Bg5 62.Rf2 Be3 0–1. keithone (1770) – zrenjanin (1935), gameknot.com, 2011.

5.a4 0-0

6.Nc3 d5 7.h3 Be6 8.Nf3 Nbd7 9.Be2 c5 10.bc6 bc6 11.0-0 Rb8 12.Qc1 c5 13.Ng5 Bf5 14.d3 (14.f4 ef4 15.Rf4 Bg6–/+) 14...d4–/+ 15.Nce4 Nd5 16.Nf3 de3 (16...Qb6 17.Rb1–/+) 17.Be5 (17.fe3!? Ne3 18.Rf2=+) 17...Ne5–/+ 18.Ne5 Qc7 19.Nc4 ef2 20.Rf2 Bg6 21.Bf3 Rfd8 22.Qd2 (22.Re2 Be4 23.Re4 Bf6-+) 22...Be4 (22...f5 23.Ng5 Nf4 24.g3 Bg5 25.gf4–/+) 23.Be4 Bf6 24.Bd5 Ba1 25.Bf7 (25.Rf7 Bd4 26.Kh1-+) 25...Kh8 26.Qf4 Qe7 27.Qe3? (27.Rf1 Bd4 28.Kh2-+) 27...Qb7 28.Qc5 (28.Qe1 Bd4 29.Bh5-+) 28...Bd4 29.Qf5 Rf8 30.Ne5 (30.Kh2 Bf2 31.Qf2 Qc7 32.Qg3 Qf7 33.c3-+) 30...Qc7 31.g4 Be5 32.Kg2 Bh2 33.Rf1 Qg3 (33...Qg3 34.Kh1 Rb1-+) 0–1. Silent Move (2115) – Mike Perkins (2065), redhotpawn.com, 2012.

6.c4 b6 7.Nc3 a6 8.Nf3 ab5 9.ab5 Ra1 10.Qa1 Bb7 11.Be2 Nbd7 12.0-0 Nc5 13.d4 Nce4 (13...ed4!? 14.ed4 Ne6+=) 14.de5+/- de5 15.Ne5 Bd6 16.Rd1 Qe7 17.Nc6 (17.Ne4 Ne4 18.Bd4 Qh4+/-) 17...Bc6+= 18.bc6 Qe5 (18...Nc3!? 19.Bc3 Ne4+=) 19.g3+/- Qf5 20.Ne4 Ne4 21.Rf1 Ng5 (21...Qg6 22.Bd3 f5 23.Rd1+=) 22.Qb1 (22.Bg7 Re8 23.Qf6 Qg6 24.Qg6 fg6+-) 22...Nf3 (22...Qc5!?+=) 23.Kg2+/- Qg4?? (better 23...Qb1 24.Rb1 Nd2+/-) 24.Bf3+- Qg6 (24...Qc4 25.Qf5 Qe6 26.Qg5+-) 25.Qg6 hg6 26.Bd5 1-0. BeepBeepImAJeep (2590) - TheYellowKing (2310), lichess.org, 2016.

6.c4 b6 7.Nc3 a6 8.Nf3 ab5 9.ab5 Ra1 10.Qa1 Bb7 11.Be2 Nbd7 12.d4 e4 (12...ed4 13.Nd4 Bg2 14.Rg1=) 13.Nd2+= Re8 14.0-0 Bf8 15.Qb1 Can e4 get defended? 15...Qe7 16.Rc1 c5 (16...d5 17.cd5 Bd5 18.Nd5 Nd5 19.Bc4+=) 17.dc5 (17.bc6!? Bc6 18.d5+/-) 17...Nc5+= 18.Qc2 h6 19.Nb3 Nd3 (19...Ra8!?+=) 20.Bd3+/- ed3 21.Qd3 Ne4 (21...Ng4 22.h3 Ne5 23.Qe2+/-) 22.Nd5+- Bd5 23.Qd5 (23.cd5 Nc5 24.Qc4 Qe4+-) 23...Qg5 (better 23...Nf2!? 24.Bd4 Nd3+/-) 24.Qg5+- hg5 25.Nd4 Rc8 (25...g6 26.Nc6+-) 26.Nc6 g6 (26...Ra8 27.Nb4+-) 27.Bd4 Nc5 28.Bc5 (28.Ra1!? Re8+-) 28...dc5 29.Rd1 Kg7 (29...Re8 30.Ra1+-) 30.Kf1 Ra8 31.Rd7 Kf6 32.f4 (32.e4 Ra1 33.Ke2 Ra2 34.Kf3 g4 35.Kg3 Ra4+-) 32...gf4 33.ef4 Ra2 (33...Ra1 34.Kf2 Ra2 35.Kg3+-) 34.Ne5 Bh6 (34...Ke6 35.Rb7 Bd6 36.Rb6 Ke7 37.Nf7 Bf4+-) 35.Ng4?? (35.g3 Ke6 36.Rb7 Bg7 37.Rb6 Kf5 38.Nf7 Rh2+-) 35...Kg7? (better 35...Ke6 36.Rb7 Bf4 37.Rb6 Kf5+=) 36.Nh6 (36.g3 Rc2+-) 36...Kh6 37.Rf7 Rc2 38.Rf6 (38.h3 Rc1 39.Kf2 Rc2 40.Kf3 Rc3 41.Ke4 Rc4 42.Ke5 g5+-) 38...Rc4 39.g3 (39.Rb6?! Rf4 40.Ke2 Rg4+/-) 39...Rb4 40.Rb6 c4? (40...Kg7 41.Kf2+-) 41.Rc6 (better 41.f5!? Kg5 42.fg6 Kh6+-) 41...c3 42.Kg2 c2 43.Rc2 Rb5 44.h4 Kh5 45.Kh3 Ra5 46.Re2 Kh6 47.Re5 Ra2 48.Kg4 White intends f5 48...Ra1 (48...Ra4 49.h5 gh5 50.Rh5 Kg6 51.Re5+-) 49.Re6 (49.h5 gh5 50.Rh5 Kg7+-) 49...Ra5 50.Rf6 Rb5? (50...Kg7 51.Rc6 Kf7+-) 51.f5 Rf5 (51...Rb4 52.Kf3 Rb3 53.Kf4 Rb4 54.Ke5 Rb5 55.Kd6 Kh7 56.fg6 Kg7+-) 52.Rf5 gf5 53.Kf5 Kh7 54.Kf6 Kh8 55.Kg6 (55.Kf7 Kh7 56.g4 Kh6 57.Kf6 Kh7 58.g5 Kg8 59.g6 Kf8 60.g7 Ke8 61.Ke6 Kd8 62.Kd6 Kc8 63.g8Q Kb7 64.Qb3 Kc8 65.h5 Kd8 66.Qg8) 55...Kg8+- 56.g4 Kh8 Plans g5 57.g5 Kg8 58.Kf6 Kh8 (58...Kf8 59.g6 Ke8 60.g7 Kd7 61.g8Q Kc6 62.Qc4 Kb7 63.h5 Kb6 64.h6 Ka7 65.Qc5 Kb7 66.h7 Ka6 67.h8Q Kb7 68.Qhc8) 59.g6 Kg8 60.g7 Kh7 61.Kf7 (61.Kf7 Kh6 62.g8Q Kh5 63.Qg5) 1-0. BeepBeepImAJeep (2575) - TheYellowKing (2330), lichess.org, 2016.

6.c4 c5 7.Nf3 a5 8.Nc3 b6 9.Be2 Bb7 10.d3 Nbd7 11.0-0 Qc7 12.Nd2 d5 13.cd5 Nd5 14.Nd5 Bd5 15.Bf3 Bf3 16.Qf3 Bf6 17.Nc4 Rfe8 18.Rad1 Rac8 19.Qd5 Nf8 (19...Rcd8 20.Qc6 Qb8 21.Qf3=) 20.Qd6 (better 20.f4+/-) 20...Qa7?? (better 20...Nd7=) 21.Qb6+- (21.Be5?! Re6 22.Bf6 Rd6 23.Nd6 Ra8+=; 21.Ne5?? Be5 22.Be5 Red8-+; worse 21.Nb6 Rcd8 22.Qc5 Re6=+) 21...Qb6 22.Nb6 Rcd8 23.Nc4 Ng6 24.Na5 Ra8 25.Nc6 Ra4 26.Ra1 Rea8 (26...Ra1 27.Ra1 (worse 27.Ba1 Re6+-) 27...Rc8 28.Ra7+-) 27.Ra4 (better 27.b6 Ra1 28.Ba1 Re8+-) 27...Ra4 28.b6 (28.Ra1 Ra1 29.Ba1 Ne7+-) 28...Ne7 29.Ne7 Be7 30.Be5 Rb4 31.Bc7 g6 32.g3 f5 (32...c4 33.dc4 Bc5 34.Rc1+-) 33.Ra1 Kf7 (33...c4 34.dc4 Bc5+-) 34.Ra7 Ke6 35.b7 1-0. BeepBeepImAJeep - KristinaK (2340), lichess.org, 2017.

6.c4 c5 7.Nf3 Nbd7 8.d3 Re8 9.e4 Bf8 10.Nc3 Nb6 (10...a6 11.Be2=) 11.Be2 Bg4 (11...Nbd7 12.a5+=) 12.Nd2 Be2 13.Qe2 Nc8 14.Nf1 Ne7 15.Ne3 Ng6 16.Ned5 Nd5 17.Nd5 Ne7 18.a5 Nd5 19.ed5 Be7 20.a6 Bg5 (20...b6 21.0-0+=) 21.h4 (21.ab7 Rb8 22.Ra7 Re7+/-) 21...Bh6 22.ab7 Rb8 23.Ra7 Qb6 24.Ra6 Qb7 (24...Qd8 25.h5+/-) 25.0-0 (25.Rd6 Qc7 26.Ra6 Qd8+-) 25...Ra8 (25...Qe7 26.Rfa1+/-) 26.Rfa1 (26.Rd6 Qe7 27.Rh6 gh6 28.Qg4 Kh8 29.f4+-) 26...Ra6+/- 27.Ra6 f5?? Black plans e4 (27...Qe7 28.h5+/-) 28.Qc2 (better 28.Rd6!? Qf7+-) 28...e4 (better 28...Qe7!?+/-) 29.de4+- (29.Rd6 ed3 30.Qd1 d2-/+) 29...fe4 (29...Re4 30.f3 (30.Rd6? Re1 31.Kh2 Bf4 32.g3 Bd6 33.Qf5 Qf7 34.Qf7 Kf7-+) 30...Re1 31.Kf2+-) 30.Bc1 (30.Rd6!? Qf7 31.Bc1 e3 32.fe3 Qh5+-) 30...Bc1 31.Qc1 e3 32.fe3 Qe7 33.Qe1 Qe4 34.Rd6 Qc4 35.b6 Qb5 36.Qg3 c4 37.Kh2 c3 38.Rc6 Qd5 39.Rc7 (39.Rc3 Rf8 40.Rc7 g6+-) 39...Qe5 (39...g6 40.b7 Rf8 41.Re7+- (41.Rc3?! Qb7 42.Qe5 Qf7+/-)) 40.Qe5 (better 40.b7!? Qg3 41.Kg3 c2+-) 40...Re5 41.Rc3 (better 41.Rc8 Kf7 42.b7 Rb5+-) 41...Rb5 42.Rc8 Kf7 43.Rc7 Kg6 44.b7 h5 45.Kg3 Rb4 46.Kf3 (46.e4 Kf6 47.Kf4 g6+-) 46...Kf5 (46...Kf6 47.e4+-) 47.Rg7 Ke5 48.Rg5 Kf6 49.Rh5 Rb7 50.Rg5 Rf7 51.Rg4 (51.g4 Rh7+-) 51...Ke6 52.Rf4 Rg7 (52...Rh7 53.e4+-) 53.g4 Rh7 54.h5 Rg7 55.Re4 Kf6 56.Rf4 Kg5?? (56...Ke6 57.Rb4 Rg8+-) 57.Kg3 Kh6 58.Rf5 Kh7 (58...Rh7 59.Kh4 Re7 60.g5 Kg7 61.h6 Kg6 62.Rf6 Kh7 63.Kh5+-) 59.Kh4 (better 59.g5 Kg8 60.Kf4+-) 59...Rf7 (59...Re7+-) 60.Rf7 Kg8 61.Rf5 (61.Rb7 Kh8 62.g5 Kg8 63.h6 Kh8 64.g6 Kg8 65.Rb8) 61...Kh8 (61...Kg7 62.Kg5 Kh7 63.Rf7 Kh8 64.Kg6 Kg8 65.g5 Kh8 66.Rf8) 62.Kg5 Kg8 (62...Kg7 63.h6 Kh7 64.Rf7 Kh8 65.Kg6 Kg8 66.h7 Kh8 67.Rf8) 63.Kg6 Kh8 64.Rf8 1-0. BeepBeepImAJeep (2535) - Luomfu (2245), Titled Arena Jan ‘19, lichess.org, 2019.

6.c4 c5 7.Nf3 Be6 8.d3 h6 9.e4 Nbd7 10.Nc3 a6 11.Be2 ab5 12.ab5 Ra1 13.Qa1 Ng4 14.Nd2 f5 15.h3 Nf2 (better 15...Ngf6=) 16.ef5?? (better 16.Kf2 fe4 17.Kg1 ed3 18.Bd3+/-) 16...Nh1-+ 17.fe6 Nf6 (17...Bh4 18.Kd1 Nf2 19.Kc2-+) 18.Nde4? (better 18.Bf3 Ne8 19.Bb7 Bh4 20.Kd1 Nf2 21.Ke2-/+) 18...Ne4-+ 19.Ne4 Bh4 20.Kd2 Nf2 21.Bf3 Ne4 (21...Nh3 22.Qa7 Nf4 23.Qb7 Qa5 24.Nc3-+) 22.Be4 Rf2 23.Kc3 Bf6 (23...Qe8 24.Qa7-/+) 24.Kb3 b6 (24...Be7 25.Bb7 Rf8 26.Qa7=+) 25.Qa7 (25.Qg1 Rf4=+) 25...Kh8 (25...Bg5 26.Bc1 Rf8 27.Bd5-/+) 26.Bc3 Qe8 (26...Be7 27.Qa8-/+) 27.Bd5 (better 27.Qf7 Qf7 28.ef7=+) 27...e4?? (better 27...Bd8-/+) 28.Bf6+- Rf6 29.de4?? (29.e7 ed3 30.Bc6 d2+=) 29...Rf2?? (better 29...Kh7 30.g4 Rf2-/+) 30.Qd7?? (better 30.e5 Qh5 31.Qb8 Kh7 32.Be4 (32.ed6?? Qd1 33.Ka3 Qd3 34.Ka4 Ra2) 32...g6 33.Qd6+-) 30...Qg6 (30...Qh5 31.Qc8 Kh7 32.Qh8 Kh8 33.Ka3 Qe2 34.Kb3 Qd3 35.Ka4 Ra2) 31.Qd8+- Kh7 32.Qh4 (better 32.g4 Rf3 33.Ka4+-) 32...Qg2-+ 33.Qf2 Qf2 34.Bc6 Qe3 35.Kc2 Qe2 (35...Qh3?! 36.e7 Qg2 37.Kc3-/+) 36.Kc1 (36.Kc3 Qh2-+) 36...Qc4 37.Kd2 Qe6 38.Bd5 (38.h4 Qg4-+) 38...Qe5 (38...Qh3 39.Ke2-+) 39.Kd3 (39.Ke2 c4! 40.Bc6 Qb2 41.Kf3 Qc3 42.Kg2 Qd2 43.Kf3 c3 44.Bd5 c2 45.Be6 Qd3 46.Kg2 Qe4 47.Kg3 c1Q 48.Bg8 Kg8 49.Kh2 Qd2 50.Kg3 Qdf4) 39...c4! 40.Ke2 (40.Kc4 Qh2 Combination; 40.Bc4 Qg3 Double attack) 40...Qd4 41.Bc4 Qc4 42.Ke3 Qb5 43.Kf4 Qe5 44.Kf3 d5 45.ed5 (45.ed5 Qd5 46.Ke3-+). BeepBeepImAJeep (2560) - Caronte68 (1980), lichess.org, 2017.

6.c4 d5 7.Be5 dc4 8.Bc4 Nbd7 9.Bb2 Nc5 (9...Nb6 10.Be2+=) 10.d4 Nce4 11.Ba3 (11.Ne2 Ng4 12.0-0 Bd6=) 11...Ba3 (11...Ng4 12.Nh3 Ne3 13.fe3 Ba3 14.0-0=) 12.Na3 (12.Ra3 Ng4 13.Ra2 c5=) 12...Qe7 (12...Ng4 13.Nh3=) 13.Nc2 (13.Qb3 Ng4 14.Nh3 Bf5+/-) 13...Rd8 (13...Ng4!? 14.Nh3 Ne3 15.fe3 Qh4 16.g3 Qh3=) 14.Ne2 c5 15.0-0 cd4 (15...Nd6 16.Ba2+=) 16.Ncd4+/- h6 17.Qb3?? (17.Rc1 Bd7+/-) 17...Bd7 (better 17...Nd2 18.Qd3 Nf1 19.Rf1 Bg4=+) 18.Rfd1+/- Be8 (18...Rac8 19.Nf4+/-) 19.Ng3 Qe5 (19...Ng3 20.hg3 Rac8 21.a5+/-) 20.Rac1 (20.Nf3 Qc3+-) 20...Ng3+/- 21.hg3 Ng4 22.Nf3 Qf6 23.Be2 a6 24.Rd8 Rd8 25.ba6 ba6 26.Qc3 (26.Qb4 Qe6 27.Nd4 Qe4+-) 26...Qc3 27.Rc3 Ba4 28.Rc4 (better 28.Nd4!? Bd7 29.Rc7+/-) 28...Bd1 (28...Bb5 29.Rd4 Rd4 30.Nd4 Be2 31.Ne2=+) 29.Rg4 (29.Kf1 Nf6=) 29...Be2=+ 30.Ra4 Rd1 31.Kh2 Rf1 32.Nd4 Bc4?? (better 32...Bd3 33.Ra3 Bb5=+) 33.Rc4+- Rf2 34.Rc8 Kh7 35.Ra8 Ra2 36.Ra7 a5 (36...Kg6 37.Nc6+-) 37.Rf7 a4 38.Ra7 a3 (38...Kg6 39.g4+-) 39.Ne6 (39.Nb5 Rb2 40.Na3 Rb4+-) 39...Ra1 (39...Kg6 40.Ra5+- (40.Rg7?! Kf6=)) 40.Rg7 Kh8 41.Ra7 a2 42.Nf4 (42.Nd4 Re1 43.Ra2 Re3+-) 42...h5 (42...Re1 43.Ra2 Re3 44.Ng6 Kh7 45.Nh4+-) 43.e4 h4 (43...Re1 44.Ra2 Re4 45.Ra7+-) 44.gh4 Kg8 (44...Re1 45.Ra2 Re4 46.Kg3+-) 45.h5 (better 45.Ne2+-) 45...Rf1 46.Ra8 (46.Nd5 a1Q 47.Ra1 Ra1+-) 46...Kh7 47.Ra2 (47.Kg3!? a1Q 48.Ra1 Ra1+-) 47...Rf4 48.Re2 Kh6 (48...Rh4 49.Kg3 Rh5 50.e5+-) 49.Kg3 Kg5 50.e5 Rg4 51.Kf3 Rf4 52.Ke3 Rf8 (52...Rh4 53.e6 Rh5 54.Kd4+-) 53.Kd4 Kh5 54.Ke4 Kg5 55.Re3 (55.e6!? Re8 56.Kd5 Kf6+-) 55...Re8 56.Rg3 Kh4 57.Rf3 Kg5 58.Rf4 (58.Kd5!? Rd8 59.Kc6 Re8+-) 58...Ra8 59.Rf5 Kg6 60.Rf6 Kg5 61.Kd5 (better 61.Rc6!? Ra2+-) 61...Ra5 62.Ke6 Ra6 63.Kf7 Ra7 64.Kg8 (64.Kf8 Ra5 65.Kg7 Re5 66.Rg6 Kf5=) 64...Ra5 (64...Re7!?+/-) 65.Kg7+- Re5 66.Rg6 Kf4 67.Rf6 (better 67.g3 Kf5 68.Kh6+-) 67...Rf5 68.Kf7 1-0. BeepBeepImAJeep (2680) - mufiks (2575), lichess.org, 2020.

6.c4 e4 7.Nc3 c6 8.Nge2 d5 9.cd5 cd5 10.Ng3 Nbd7 11.Be2 Ne5 (11...Nc5 12.0-0=) 12.0-0 (12.Nce4 Ne4 13.Be5 Bb4+=) 12...Bg4 (12...Bd6=) 13.f3 (better 13.Nce4 de4 14.Be5 Be2 15.Qe2+/-) 13...ef3=+ 14.gf3 Bh3 15.Rf2 Nc4 16.Bc1 (16.Bc4 dc4 17.d4 cd3=+) 16...Bc5 (16...Rc8 17.Bc4 dc4 18.Ba3-/+) 17.Qc2 Rc8 18.Qb3 Re8 (18...Be6 19.d4 Bd6 20.Bd3-/+) 19.Nd5=+ Na5 (19...Nd2 20.Bd2 Nd5 21.Rd1-/+) 20.Nf6 Qf6 21.Qb2 (21.Qa2=+) 21...Qe7 (21...Nb3 22.Qf6 gf6 23.Rb1 Nc1 24.Rc1 Be3 25.Rc8 Bf2 26.Kf2 Rc8 27.Nh5=+) 22.d4 (22.f4 Bb6=) 22...Bd6 (better 22...Bb4!? 23.Qa2 Be1-/+) 23.Bd2 Nc4 24.Bc4 Rc4 25.Re1 (25.e4 Qe6=) 25...Rec8 (25...Ra4 26.e4=+) 26.Qb1 (26.Qa1 a6=+) 26...Rc2 (26...Ra4 27.Ne4-/+) 27.Ba5 Rf2 28.Kf2 b6 29.Bd2 Be6 (29...Rc4 30.Qe4 Qd8 31.Ra1=) 30.Rc1 (30.Nf5 Qd7 31.Nd6 Qd6=) 30...Re8 (30...Rc1 31.Qc1 Qh4 32.Qg1=) 31.Qe4 Qf6 32.Rc6 (better 32.Kg1!?=) 32...Bd7-/+ 33.Qd5 Bc6 34.bc6 (34.Qc6 Rd8-/+) 34...Qh6 35.Kg2 Bg3?? (better 35...Rc8-+) 36.hg3= Rc8? (better 36...Qf6 37.c7 Qe7=) 37.Qd7?? (37.c7 Rf8 38.Bb4+-) 37...Qc6-+ 38.Qa7 (38.Qc6 Rc6 39.Kf2-+) 38...Qc2 39.Qb6 (39.Kh3 Qd2 40.Qb7 Rf8-+) 39...Qd2 40.Kh3 Qe3 41.a5 (41.f4 Qe4 42.Qb2 h5-+) 41...Qe6 (41...Qf3 42.Qb1 Re8-+) 42.g4 Qb6 43.ab6 Rb8 44.Kg3 Rb6 45.Kf4 Kf8 46.Ke5 (46.Ke4 g6 47.g5 f5 48.Ke5 Rb3-+) 46...Ke7 (46...Re6 47.Kd5-+) 47.d5 (47.Ke4 g6-+) 47...Rd6 48.f4 f6 49.Ke4 g6 50.g5 f5 51.Ke5 Rd7 52.Kd4 (52.d6 Kd8 53.Kd5-+) 52...Kd6 53.Kc4 Rc7 54.Kd4 Rc5 (54...Re7!? 55.Kc3-+) 55.Kd3 Rd5 56.Ke3 Kc5 57.Kf3 Kd4 58.Ke2 Black now must not overlook the idea Ra5 58...Ke4 59.Kf2 Rd3 (59...Rd2 60.Ke1 Kd3 61.Kf1 Ke3 62.Ke1 Rd4 63.Kf1 Rf4 64.Kg2 Rg4 65.Kh3 Kf2 66.Kh2 Rh4) 60.Ke2 Rf3 (60...Rd6 61.Ke1 Kf3 62.Kf1 Rd1) 61.Kd2-+ Rf4 62.Ke2 If White now would get Rg4 in, he might survive 62...Rg4 63.Kd2 Rg5 64.Kc3 If White now only could play f4... 64...Rg4 65.Kc4 Rf4 66.Kc5 g5 67.Kd6 g4 68.Kc5 g3 69.Kd6 g2 70.Kc5 Kf3 71.Kd6 (71.Kb6 g1Q 72.Kb5 Qc1 73.Ka5 Qc3 74.Ka6 Rb4 75.Ka7 Qa1) 71...Re4 72.Kd5 (72.Kc5 g1Q 73.Kd5 Qd4 74.Kc6 Re6 75.Kc7 Qa7 76.Kd8 f4 77.Kc8 Re8) 72...g1Q 73.Kd6 (73.Kc6 Rc4 74.Kd5 Qd4 75.Ke6 Qb6 76.Ke5 Rc5 77.Kd4 Qd6) 73...Qd1 (73...Qd4 74.Kc6 Re6 75.Kc7 Qg7 76.Kd8 f4 77.Kc8 Re8) 74.Kc6 (74.Kc5 Qd3 75.Kb6 Rb4 76.Kc5 Rc4 77.Kb6 Qb3 78.Ka5 Ra4) 74...Re2 (74...Rc4 75.Kb5 Qb3 76.Ka5 Ra4) 75.Kb5 Rc2 76.Kb4 (76.Ka5 Rb2 77.Ka6 Qa4) 76...Qb1 77.Ka3 (77.Ka4 Ra2) 77…Ra2 0-1. BeepBeepImAJeep (2535) - thujer (2650), lichess.org, 2017.

6.c4 e4 7.Nf3? ef3-+ 8.gf3 (8.Qf3 a6-+) 8...d5 9.Nc3 d4 10.Ne4 Ne4 11.fe4 Bf6 12.Rg1 (12.Rb1 a6-+) 12...c5 (12...de3 13.e5 ef2 14.Kf2-+) 13.e5 (13.Qc2 Re8-+) 13...Be5 14.ed4 Bd4 (14...Bh2!? 15.Rh1 Re8 16.Be2-+) 15.Bd4 Qd4 16.Be2 Re8 17.Ra3 Bf5 18.Re3 Nd7 19.Qb3 Nf6 20.Reg3 (20.Rg5 Qf4 21.Rg2 Rad8-+) 20...Qa1 (20...Ne4!? 21.Re3-+) 21.Qd1 Qd1 (21...Qb2!? 22.Qb3 Qe5 23.Re3 Qh2 24.Rf1-+) 22.Kd1 g6 23.Rg5 (23.Re3 Rad8 24.Ke1 Kf8 25.Re8 Re8-+) 23…Kf8 0-1. BeepBeepImAJeep (2540) - thujer (2645), lichess.org, 2017.

6.c4 Be6 7.Nc3 Nbd7 8.Nf3 d5 9.d4 (9.cd5 Nd5 10.Nd5 Bd5 11.Ne5 Nc5+=) 9...ed4 10.Nd4 Nc5 11.Ne6 fe6 (worse 11...Ne6 12.cd5 Nc5 13.Bc4+/-) 12.Be2 Nfe4 13.Ne4 (13.cd5?? Nf2 (13...Rf2 14.Ne4 Ne4 15.Qd4 Bb4 16.Qb4+=) 14.Qd4 Nb3-+) 13...Ne4 14.0-0 Bd6 (14...Bf6 15.Bf6 Rf6 16.Qc2=) 15.Qd4 (15.Bg4 dc4 16.Be6 Kh8+=) 15...Qg5 (15...Qf6 16.Qf6 Nf6 17.cd5 Nd5 18.Rfd1+=) 16.f4 (16.cd5 Nf2 17.Rf2 Bh2 18.Kf1 ed5 19.Rf8 Rf8 20.Bf3 Kh8+-) 16...Qg6 (16...Qf6 17.Qf6 gf6 18.f5+=) 17.Bh5 (17.cd5?! Bc5 18.Qd3 Rad8=) 17...Qh6 (better 17...Qf6+=) 18.Bf3 (better 18.cd5 Nc5 19.de6 Ne6 20.Qd5+/-) 18...Bc5= 19.Qd3 Qf4 20.Rae1 Rad8 21.cd5 ed5 22.Bd4 Bd4 23.Qd4 Qf6 24.Be4 Qd4 25.Bh7 Kh7 26.ed4 Rf1 27.Kf1 c6 (27...Rf8 28.Ke2=) 28.Re7+= cb5 (28...Rb8 29.bc6 bc6 30.Ra7=) 29.ab5+/- b6 (29...Rb8 30.Rd7+/-) 30.Ra7+- Rc8 (30...Rd6 31.h3+-) 31.Rb7 (better 31.Rd7!?+-) 31...Rc4+/- 32.Rb6 Rd4 33.Rd6 Rd2 34.h4 d4 35.Ke1 Rg2 36.Rd4 Rb2 37.Rd5 Rb4 (37...Kg6 38.h5 Kf6 39.Kd1+-) 38.h5 Kh6 39.Ke2 Rh4 40.Ke3 Rh5?? (40...g5 41.hg6! Kg6+-) 41.Rh5 Kh5 42.b6 g6 43.b7 (43.b7 g5 44.b8Q Kg6 45.Ke4 Kf6 46.Qd6 Kf7 47.Kf5 g4 48.Qd7 Kf8 49.Kf6 g3 50.Qd8) 1-0. BeepBeepImAJeep (2670) - AstanehChess (2610), lichess.org, 2016.

6.c4 Be6 7.Nc3 Nbd7 8.Nf3 h6 9.d4 ed4 10.Nd4 Nc5 11.Be2 Nfd7 12.0-0 Ne5 13.Ne6 fe6 14.Qc2 Bf6 15.Rad1 Qe8 (15...Ned7 16.a5=) 16.a5 (16.Ne4 Qg6 17.Nf6 gf6 18.Qg6 Ng6=) 16...b6 (16...a6!?=) 17.a6 Qf7 18.Ba3 Ned7 19.Ne4 Ne4 20.Qe4 Nc5 21.Bc5 bc5 22.Bg4 (22.Bd3 g5+/-) 22...Rfe8+= 23.Rb1 Rab8 24.Rfd1 Rb6 25.Bh3 g6 26.g3 Kg7 27.Rd2 h5 (27...Bc3 28.Rd3 Qf6 29.Rbd1+=) 28.Rbd1 Bc3 29.Rc2 Be5 30.Bf1 Rbb8 31.Bd3 Re7 32.f4 Bf6 33.Qf3 Rbe8 34.Be4 e5 35.Bd5 Qf8 36.e4 (36.f5 e4 37.Qf2 Bg5+/-) 36...ef4 37.gf4 Be5 38.Rf1 Bd4 39.Kh1 Qf6 40.Rg2 Kh6 41.f5 g5 42.Qh3 (42.h4 Rg7 43.hg5 Rg5+/-) 42...Re5 43.Rg3 Re4 (43...R5e7 44.Rff3+/-) 44.Be4 Re4 45.Qg2 Re8 46.h4 (46.Qd2!?+/-) 46...g4+= 47.Qd2 Kg7 48.Qg5 Qg5 49.hg5 Re2 (49...Re4!? 50.f6 Kf7+=) 50.f6+/- Kf7 51.g6! Kg6 (51...Kf8 52.Rg2 Re5 53.f7+/-) 52.f7+- Bg7 53.f8Q Bf8 54.Rf8 Kg5 (54...Rc2 55.Ra8 Rc4 56.Ra7+-) 55.Rb8 (better 55.Ra8 Rc2 56.Ra7 Rc4 57.Rc7+-) 55...h4?? (better 55...Kf4 56.Rg1 Rc2+-) 56.Rg8+- Kf5 57.R3g4 h3 58.Rh4 Rc2 59.Rh3 (better 59.Rg7!? d5+-) 59...Rc4 60.Rh5 Ke6 61.Rh6 Kf7 (61...Kd5 62.Rg5 Kd4 63.Rg4 Kc3 64.Rg7+-) 62.Rc8 Rc1 63.Kh2 Rc2 64.Kh3 (64.Kg3!? Kg7 65.Rch8 Rb2 66.R8h7 Kg8 67.Rc7 Rb5 68.Rd6 Rb3 69.Kf4 Rb8+-) 64...Kg7 65.Rh4 d5 (65...Rb2 66.Rc7 Kf6 67.Rh6 Kf5 68.Ra7 Rb5 69.Rf7 Kg5 70.a7+-) 66.Kg4 (66.Rc7 Kf6+-) 66...Kf6 (66...Kg6 67.Rc7 Rc4 68.Kg3 Rc3 69.Kf2 Rc2 70.Kf3 Rc3 71.Ke2+-) 67.Rc7 Rc4 68.Kh5 Rc3 69.Rc6 (better 69.Ra7!? Rg3+-) 69...Ke5 Black prepares d4 70.Rg4 (70.Rc8 Rb3 71.Rc5 Kd6 72.Rc6 Ke5+-) 70...d4 (70...Rh3 71.Kg6 Rh8 72.Rc5 Rg8 73.Kh5 Rh8 74.Kg5 Rb8+-) 71.Rg5 Ke4 72.Rg4 Kd3?? (72...Ke5 73.Rg7 Rc1 74.Ra7 d3+-) 73.Kg6 (better 73.b6 ab6 74.a7+-) 73...Rc1 (73...Kc4 74.b6 ab6 75.Rb6+-) 74.Rg5 Rg1 (74...c4 75.Rc7+-) 75.Kf6 (better 75.Rg1 Ke3+-) 75...Rg5 (75...Rf1 76.Rf5 Rh1 77.Rfc5 Rh8+-) 76.Kg5 c4 77.Kf4 c3 78.Ke5 (better 78.b6 Kd2+-) 78...c2 79.Rc2! Kc2 80.Kd4 Kb3 (80...Kd1 81.b6! Kc2 82.ba7 Kb3 83.a8Q Kc2 84.Qg2 Kb3 85.a7 Ka3 86.Qb7 Ka4 87.a8Q) 81.b6! Ka4 (81...ab6 82.a7 Passed pawn) 82.ba7 Ka5 83.a8Q Kb6 (83...Kb4 84.Qb8 Ka5 85.a7 Ka6 86.a8Q) 84.Qc8 (84.Qb7 Ka5 85.a7 Ka4 86.a8Q) 84...Ka5 85.a7 Kb4 (85...Kb6 86.a8Q Kb5 87.Qc5) 86.a8Q Kb3 (86...Kb5 87.Qc5) 87.Qab7 (87.Qc3) 87...Ka2 (87...Ka4 88.Qca8) 88.Qca8 1-0. BeepBeepImAJeep (2470) - kwchez (2560), lichess.org, 2019.

6.c4 Re8 7.Nf3 c6 8.Be2 cb5 9.cb5 e4 10.d4?? (better 10.Nd4=) 10...ef3-+ 11.Bf3 d5 12.0-0 Be6 13.Nc3 Nbd7 14.Rc1 (14.a5 Bd6-+) 14...b6 (14...Nb6 15.e4-+) 15.Qd3 Rc8 16.Rfd1 h6 17.h3 Bb4 18.Ne2 Rc1 19.Rc1 Be7 20.Nf4 Bd6 21.Ne6 fe6 22.Rc6 Qe7 23.Qb3 Kh8 24.Qc2 e5 25.Qf5 ed4 26.Bd4 Be5 27.Be5 Ne5 28.Rc1 Nf3 29.Qf3 Ne4 30.Rc6 Rf8 31.Qg4 (31.Rc7 Qb4 (31...Qc7?! 32.Qf8 Kh7 33.Qf5 g6 34.Qd5-/+; 31...Rf3?! 32.Re7 Rf6 33.f3-+) 32.Rf7 Rf7 33.Qf7 Qe1 34.Kh2 Qf2 (34...Nf2?! 35.Qf8 Kh7 36.Qf5 Kg8 37.Qc8 Kf7 38.Qf5 Ke7 39.Qe5 Kd7 40.Qd5 Ke7 41.Qe5 Kf7 42.Qf5 Kg8 43.Qc8 Kh7 44.Qc2 Kg8 45.Qc8 Kf7 46.Qf5 Ke8 47.Qe5 Kf7 48.Qf5=) 35.Qd5 Qg3 36.Kg1 Qe3 37.Kh2 Qf4 38.Kg1 Qc1 39.Kh2 Qc7 40.Kh1 Ng3 41.Kg1 Qc1 42.Kf2 Qf4 43.Qf3 Ne4 44.Ke2 Qd2 45.Kf1 Qc2 46.Qf8 Kh7 47.Qf5 Kg8 48.Qe6 Kh8-+) 31...Nf2 (31...Rf2 32.Qg6-+) 32.Qd4 (32.Qe6 Qb4 33.Kh2 Qe1 (33...Qa4?! 34.Rc8 Qb4 35.Qf5-+) 34.Qd5 Qh1 35.Kg3 Qg1-+) 32...Qf7 (32...Qg5 33.h4 Qf5 34.Rh6 Kg8 35.e4 Ne4 36.Rc6-+) 33.Rc2? (33.Rh6 Kg8 34.Rh4-+) 33...Ne4 34.Kh2 (34.Qe5 Nc5-+) 34...Qg6 35.Qd5 (35.Qe5-+) 35...Qg3 36.Kg1 Rf2 (better 36...Ng5 37.Qd1 Nf3 38.Kf1 Nd2 39.Kg1 Qe3 40.Kh1 Rf1 41.Qf1 Nf1 42.Rc8 Kh7-+) 37.Qe4 (37.Rc8!? Kh7 38.Qe4 Qg6 39.Qg6 Kg6 40.Kf2 Kf5+-) 37...Qg2?? (better 37...Rc2 38.Qc2 Qe3 39.Kh2 Qe5 40.g3 Kg8=) 38.Qg2+- Rg2 39.Kg2 Kh7 40.Kf3 g5 41.Rc6 h5 42.Ke4 g4 43.hg4 hg4 44.Kf4 g3 45.Kg3 Kg7 46.Kg4 Kf7 47.Kf5 Ke7 48.Ke5 Kd7 49.Kd5 a6 50.e4 (50.ba6 Ke8 51.a7 Ke7 52.a8Q Kd7 53.Qb7 Ke8 54.Rc8) 50...ab5+- 51.ab5 Ke7 52.e5 (52.Rb6 Kf8 53.Rb7 Ke8 54.b6 Kd8 55.Rh7 Kc8 56.Kc6 Kd8 57.b7 Ke8 58.b8Q) 52...Kd7 (52...Kf7 53.e6 Kg6 54.e7 Kf5 55.e8Q Kf4 56.Qe4 Kg3 57.Rg6 Kf2 58.Rg2 Kf1 59.Qe2) 53.Kd4 (53.Rb6 Kd8 54.Rc6 Ke8 55.b6 Ke7 56.Rc7 Kd8 57.e6 Ke8 58.b7 Kd8 59.b8Q) 53...Ke7 54.Ke4 Kd7 55.Kd5 (55.Kf5 Ke8 56.Kf6 Kd7 57.Kf7 Kd8 58.Kf8 Kd7 59.e6 Kd8 60.e7 Kd7 61.e8Q) 55...Ke7 (55...Kd8 56.Ke6 Ke8 57.Rc8) 56.Rc7 Kd8 57.Kd6 (57.Rf7 Kc8 58.e6 Kb8 59.e7 Kc7 60.e8Q) 57...Ke8 58.Ke6 (58.e6 Kf8 59.Rf7 Kg8 60.Kd7 Kh8 61.e7 Kg8 62.e8Q) 58...Kd8 59.Rc6 (59.Rc6 Ke8 60.Rc8) 1-0. BeepBeepImAJeep (2620) - QueenMaster77 (1970), lichess.org, 2017.

6.c4 Re8 7.Nf3 Bf8 8.Be2 (8.Nc3 g6=) 8...e4=+ 9.Nd4 Nbd7 (9...c5 10.bc6 bc6 11.Nc3=+) 10.0-0= Nc5 11.Nc3 (11.f3 g6=) 11...g6 12.Qc2 Bg7 (12...Bd7 13.f3+=) 13.Nb3 (13.f3 ef3 14.Bf3 Bg4=) 13...Bf5 (13...Bg4 14.Nc5 dc5 15.Bg4 Ng4 16.h3=) 14.Rad1 (14.Nd4 Bc8=) 14...Nfd7=+ 15.Nc5 (15.Nd5 Bb2 16.Nc5 dc5 17.Qb2 Ne5=+) 15...Nc5 (worse 15...dc5 16.d3 ed3 17.Bd3+=) 16.Nd5 Bb2 (16...Be5 17.Rb1=+) 17.Qb2= Re5 (17...Na4? 18.Qa1 Nc5 19.Nf6 Kf8 20.Ne8 Qe8 21.Qh8 Ke7 22.Qh7+–) 18.a5 (18.Ra1 c6 19.Nf4 Bd7=) 18...c6=+ 19.Nf4 (19.bc6 bc6 20.Nb4 Rc8=+) 19...Qa5–/+ 20.bc6 bc6 21.Qd4 (21.d4 ed3 22.Bd3 Qc7–/+) 21...Qc7 22.f3 (22.d3 ed3 23.Bd3 Nd3 24.Nd3–/+) 22...Ne6 (better 22...Rb8!?–/+) 23.Ne6=+ Re6 24.g4 ef3?? (better 24...c5 25.Qd5 Rae8=) 25.Bf3+– Bc2 (25...Bg4 26.Bg4 Re5 27.Bh3+–) 26.Rc1 Ba4 (26...Bb3 27.Rb1 Rb8+–) 27.Qf4?? (better 27.Qa1 Qa5 28.Bc6+–) 27...Rb8= 28.Rf2 (28.Rb1!? Rb1 29.Rb1=) 28...Rb4–/+ 29.d4 (29.Bg2 a5–/+) 29...Qe7 30.e4 (30.d5 Rf6 31.Qg5–/+) 30...Rf6 (better 30...c5!?-+) 31.Qe3 (31.Qg5 Kg7=+) 31...Rb3 (31...a6 32.Qg5=+) 32.Rc3 Rc3 (32...Rb1 33.Rc1 Rc1 34.Qc1–/+) 33.Qc3=+ c5 34.e5 (34.d5!?=+) 34...de5–/+ 35.de5 Rf4 36.h3 (36.Rd2 h5–/+) 36...Bd7 (36...Qh4 37.Kg2 Bc6 38.Rf1 Rf3 39.Rf3-+) 37.Qe3 (37.Bd5 Rf2 38.Kf2 Be6–/+) 37...Rd4 (worse 37...Rc4 38.Bd5 Be6 39.Bc4 Bc4 40.Rc2+=) 38.Bd5 (38.Rb2 Rc4 39.Rb7 a5–/+) 38...Be6-+ 39.Qf3 a5 40.Be6? (better 40.Kg2!?-+) 40...Qe6 (40...fe6?! 41.Qa8 Kg7 42.Qa5–/+) 41.Qa8 Kg7 42.Qa5 Qe5 43.Kg2?? (43.Qa3 Rc4 44.Qf3 f6-+) 43...Qe4 (better 43...Rd3 44.Kf1 Qe4-+) 44.Kh2 Qe5 45.Kg2 Rd3 46.Rf3 (46.Kf1 Qe4 47.Qa1 Kg8-+) 46…Qe4 (46...Qe4 47.Qa1 Kg8-+) 0–1. Timmermans,Mark (2415) – Lobron,Eric (2525), 9. Batavia Blitz, 2017.

6.c4 Ne8 7.Nc3 f5 8.Nf3 Nf6 9.d4 e4 10.Nd2 c6 11.Be2 d5 12.Qb3 Kh8 13.Rc1 a6 (13...dc4 14.Bc4 cb5 15.Bb5=) 14.g3 (14.bc6!? bc6 15.0-0=) 14...ab5= 15.ab5 Be6 16.bc6 bc6 (16...Nc6 17.c5= (17.Qb7?? Na5 18.Qa8 Qa8-+)) 17.cd5 (17.Qb7!? Na6 18.Qc6=) 17...cd5 18.Na4 Nbd7 19.Nc5 Rb8 (19...Bf7 20.Nb7 Qb8 21.Nc5=+) 20.Ne6= Rb3 21.Nb3 Qb6 22.Nf8 Qb3 23.Nd7 Nd7 24.Bc3 Bb4 (24...Ba3 25.Bd1 Qc4 26.Rc2=) 25.Bb4+= Qb4 26.Kf1 h6 27.Kg2 Nf6 28.Rhe1 (28.Rc8 Kh7+/-) 28...Qd2 29.Rcd1 Qb2 30.h4 h5 31.Rb1 Qc2 32.Kf1 Kh7 33.Rec1 Qd2 34.Rc5 Ng4 35.Bg4 hg4 36.Kg1 (better 36.Kg2 f4 37.gf4=) 36...Qe2?? (36...f4!? 37.gf4 g3 38.fg3 Qe3 39.Kg2 Qd3=) 37.Rf1?? (37.Rd5 Qc2 38.Rbb5 Qd1 39.Kh2 f4 40.Rh5 Kg8 41.Rb8 Kf7 42.Rf5 Ke6 43.Rf4 g5 44.hg5 Qa4 45.Rf6 Kd5+-) 37...Qf3? (better 37...f4 38.ef4 Qd2=) 38.Rd5+- f4 (38...Kg6 39.Ra1 Kh6 40.Rd6 Kh7 41.Rd7+-) 39.ef4 (better 39.Rf5 Qe2 40.Rf4+- (40.gf4?! g3 41.fg3 Qe3 42.Kg2 Qd4+/-; 40.ef4?! e3 41.Re5 ef2 42.Rf2 Qd1 43.Kg2 Qd4+-)) 39...e3 40.Re5 ef2 41.Rf2?? (better 41.Kh2+-) 41...Qg3= 42.Kf1 Qd3 43.Ke1 Qd4 44.Rg5 (44.Kf1!?=) 44...Qe3=+ 45.Kf1 Qg3 (better 45...g3!? 46.Ra2 Qf4 47.Kg2 Qh4 48.Rg3 Qe4 49.Kh2 Qf4=) 46.h5 1-0. BeepBeepImAJeep (2700) - juniortay (2240), lichess.org, 2017.

6.Nf3 c5 7.Be2+=.

6.Nf3 Nbd7 7.d4 Re8 (better 7...e4!? 8.Nfd2 c6=+) 8.de5+= de5 9.Ne5 Ne5 10.Be5 Bb4 11.Bc3 Qd1 12.Kd1 Be7 (12...Ne4 13.Be1+=) 13.f3 (13.Bd3 Be6+/-) 13...Bf5 14.e4 Rad8 15.Kc1 Be6 16.Bb2?? (16.a5 c5+/-) 16...Nd7?? (better 16...Ne4 17.fe4 Bg5 18.Nd2 Rd2-+ (18...Bd2?! 19.Kb1-/+)) 17.Nd2+= Nb6 (better 17...Nc5+=) 18.Bc4?? (better 18.Be5+/-) 18...Nc4-+ 19.Nc4 Bc4 20.Kb1 (20.Bc3 c6-+) 20...Rd2 21.a5 (21.Rg1 Bc5 22.Bc3 Re2-+) 21...Re2 (21...Bb5 22.Rg1-+) 22.Bc3 (22.b6 cb6 23.ab6 ab6-+) 22...Bb5 23.a6 (23.Kb2 Bc5 24.g4 Re3-+) 23...Ba6 24.Rd1 (24.g3 Re3 25.Kb2 Rf3-+) 24...Rc8 (24...Rg2 25.Rd2 Rd2 26.Bd2-+) 25.Rc1 (25.Rd2 Rd2 26.Bd2 Bf1-+) 25...Bd6 (25...Rg2 26.Rh1-+) 26.Ra5 White prepares the advance e5 26...Bc4 (better 26...Rg2!? 27.e5 Be7 28.Rh1-+) 27.e5 b5 (better 27...Be7 28.Rd1 Rg2 29.Ra7 Ba6-+) 28.ed6 cd6 29.Bb4 f6 (29...Rg2!? 30.Bd6 Rg6 31.Rd1-+) 30.Ra7 g5 (30...Rg2 31.Bd6 Bd5 32.Ra5-+) 31.Rd1 Bf7 32.Rd2 Bg6?? (better 32...Rd2 33.Bd2 Bg6-/+) 33.Re2+- Rc4 (33...d5 34.Rd7+-) 34.Bd6 h5 (34...Rc8 35.Rb7+-) 35.Kb2 (35.Kb2 Rc8 36.Rb7+-) 1-0. Farmville (2555) - blitzbullet (2430), Rated Bullet game, 2018.

6.Nf3 Bg4 7.Be2 a6 (7...e4 8.Nd4 Be2 9.Qe2=) 8.c4 (8.0-0 ab5 9.ab5 Ra1 10.Ba1 Nbd7+=) 8...c6 (8...e4 9.Nd4 Be2 10.Qe2+=) 9.h3 (9.0-0 ab5 10.ab5 Ra1 11.Ba1 cb5 12.cb5 e4=) 9...Bd7 (9...Be6 10.0-0+=) 10.Nc3 ab5 11.ab5 Ra1 12.Qa1 h6 (12...e4 13.Ng5 d5 14.d3=) 13.Qa7 Qc7 (13...e4 14.Nd4 Qc7 15.b6=) 14.0-0 (14.b6 Qc8=) 14...Be6 (14...e4 15.b6 Qc8 16.Nd4=) 15.Rc1 (15.Ra1 e4 16.Nd4 Qd7+=) 15...Nbd7 (15...e4 16.Nd4=) 16.Na4 (16.bc6 Qc6 17.d4 Bc4+=) 16...Re8 (16...Qb8!? 17.Qb8 Rb8=) 17.d4+= e4 (17...ed4 18.Nd4 (18.Bd4 cb5 19.Nb6 bc4–/+) 18...c5 19.Ne6 fe6 20.Bf3+/-) 18.Nd2 (18.bc6!? Nb8 19.Qb7 Qc6 20.Qc6 Nc6 21.d5+/-) 18...Qb8= 19.Qb8 Rb8 20.Nc3 d5 21.c5 (21.cd5 cd5 22.f3 ef3 23.Bf3 Rd8+=) 21...Ne8 (21...Kf8 22.Kf1=) 22.g4 (22.Ra1 Nef6+=) 22...f5= 23.gf5 Bf5 24.Kh2 (24.Kg2 Nef6+=) 24...Nef6 (24...Ra8 25.f4=) 25.Nf1 (25.f3 ef3 26.Bf3 Ra8=) 25...g5 26.Ng3 Bg6 (26...Be6 27.f3 ef3 28.Bf3=) 27.Ra1 h5 28.Ra7 h4 29.Nf1 Kf7 30.Ba3 Ke8 31.b6 (31.f3 ef3 32.Bf3 Kf7+=) ½–½. Pohl,Manfred – Faenger,Helfried, Bahn–chG Fuessen, 1993.

6.c4 a5

7.ba6 Na6-/+ 8.d4 ed4 9.ed4 (9.Bd4 Nb4 10.Qb3 Nc6-/+) 9...Re8 10.Nf3 Bf8 (10...d5!? 11.Be2 Bb4 12.Nc3 Ne4-/+) 11.Be2=+ Bg4 12.0-0 Nb4 13.Re1 (13.d5 c5=) 13...c5 (13...Bf3 14.gf3 d5 15.c5-/+) 14.Qb3 (14.Bc3 Qb6=) 14...Qc7 (better 14...Bf3!? 15.gf3 Nh5-+) 15.Nbd2 (15.Bc3 Nc6 16.dc5 Na5=) 15...Ne4 (15...Bf5 16.Rac1=) 16.Ne4 Re4 17.Bf1 (17.Bc3 Rae8 18.Bd1 d5 19.Re4 de4=) 17...Rae8 (17...Bf3 18.Qf3 Re1 19.Re1 cd4 20.Qb3=) 18.Re4+= Re4 19.Nd2 Re8 20.d5 Be2 (20...Qa5 21.Bc3+=) 21.Bc3 Bf1 (21...Nd3 22.Rb1+=) 22.Kf1 (22.Rf1 g6+/-) 22...Nd3+= 23.Bg7?? (better 23.Qc2 Nf4 24.Qf5+=) 23...Bg7-+ 24.Rd1 Ne5 (24...Nb2 25.Re1 Re1 26.Ke1 Qe7 27.Kf1-+) 25.Qg3 (25.Qb5 Ra8-+) 25...Kh8 (25...Qd7 26.a5-+) 26.Nf3 (26.Qb3 Qa5-+) 26...Nf3 (26...Nc4 27.Qf4 Nb2 28.Rb1-+) 27.gf3? (27.Qf3 Qd7 28.Qb3-+) 27...Be5 (better 27...Qe7 28.Kg2 Qe2-+) 28.h4 (28.f4 Bd4 29.Rb1-+) 28...Bg3 29.fg3 Qe7 30.Rd2 (30.Rb1 Qe2 31.Kg1 Qf3 32.Rf1 Qg3 33.Kh1 Rg8 34.Rf7 Qh4) 30...Qe1-+ 31.Kg2 Qd2 32.Kh3 Re3 (32...h5 33.g4 Re1 34.gh5 Rg1 35.a5 Qg2) 33.Kg4 Rf3! (33...Rf3 34.Kf3 Qd3 35.Kf2 Qc4-+) 0-1. ClayPigeons (2120) - tatnur (2120), Rated Bullet game, lichess.org, 2020.

7.Nc3 b6 8.Nf3 Bb7 9.Be2 Nbd7 10.0-0 Nc5 11.d4 ed4 12.Nd4 Nce4 13.Ne4 Ne4 14.Bf3 Bf6 15.Qc2 Re8 16.Rad1 Rb8 17.Rfe1 Qe7 18.h3 Qe5 (18...Be5 19.g3 Ng5 20.Bb7 Rb7 21.Kg2=) 19.Ba1 (19.Nc6 Qb2 20.Qb2 Bb2 21.Be4 Rbc8+=) 19...Qg5= 20.Ne2 Ba1 21.Ra1 Qg6 22.Nf4 Qf5 (22...Qg5 23.Nd5 Nc5 24.Kh2=) 23.Rad1 (better 23.Nd5+=) 23...Nc5?? (better 23...Qc5=) 24.Nd5 (better 24.Qf5 Bf3 25.gf3+-) 24...Ne6 (better 24...Qc2 25.Nc7 Bf3 26.gf3 Re5-+) 25.Qf5+- 1-0. BeepBeepImAJeep (2575) - Paanoos (2335), lichess.org, 2016.

7.Nc3 Nbd7 8.Nf3 Nc5 9.d4 ed4 10.Nd4 Nce4 11.Ne4 Ne4 12.Bd3 f5 13.0-0 Bf6 14.Qc2 Qe8 15.Rad1 Qh5 (15...Be6+=) 16.Ne2 (16.Be4!? fe4 17.Qe4+/-) 16...Bb2= 17.Qb2 Be6 18.Nf4 Qe8 19.Ne6 Qe7?? (better 19...Qe6 20.b6 cb6 21.Be4 fe4 22.Qb6 Qc4 23.Qb7 Rfb8=) 20.Nf8+- 1-0. BeepBeepImAJeep (2590) - Paanoos (2320), lichess.org, 2016.

7.Nc3 Nbd7 8.Nf3 Nc5 9.d4 ed4 10.Nd4 Nfe4 11.Ne4 Ne4 12.Bd3 f5 13.0-0 Bf6 14.Qc2 Re8 15.Rac1 (15.f3 Nc5 16.Bf5 Bf5 17.Nf5 Bb2 18.Qb2 Qd7+/-) 15...Bd7 16.Rfd1 c5 17.Ne2 Qe7 18.Bf6 Qf6 19.Nf4 Rad8 20.Nd5 Qe5? (20...Qg6 21.Rb1+=) 21.Be4 (better 21.f4 Qe6 22.Nc7+-) 21...fe4+= 22.Qc3 Qg5 (22...Qc3!? 23.Rc3 Re5=) 23.Qa5+/- Re6 (23...Bg4 24.Rd2+/-) 24.Nf4 (better 24.Qc7 Bc8 25.Nb6+-) 24...Rf8? (better 24...Rh6+-) 25.Ne6 (25.Qc7 Re7 26.Qb7 Bg4 27.Qd5 Qd5 28.Rd5 Ra8+-) 25...Be6 26.Rd6 (better 26.Qd2 Rd8 27.a5+-) 26...Qe5? (26...Bh3 27.g3 Qf5 28.f4 ef3 29.Kf2+-) 27.Qc7 (better 27.Rd8 Qf6 28.Rf8 Qf8+-) 27...h5 (27...Qb2 28.Rf1 Bc4 29.Rd8 Bf1 30.Rf8 Kf8 31.Qc5 (31.Kf1?! Qc1 32.Ke2 Qc4 33.Kd2 Qb4 34.Ke2 Qc4 35.Ke1 Qc1 36.Ke2 Qc4=) 31...Kf7 32.Qf5 (32.Kf1?! Qa1 33.Ke2 Qa2 34.Ke1 Qb1 35.Kd2 Qd3 36.Kc1 Qf1 37.Kc2 Qf2 38.Kb3 Qg2+-) 32...Qf6 33.Qf6 gf6 34.Kf1+-) 28.Rf1 (better 28.Qe7 Rf6 29.Rd5+-) 28...Rf7 (28...Bc4 29.Rfd1 Bb3 30.Qb7 Bd1 31.Rd1 Qf5+-) 29.Rd8 Kh7 30.Qe5 (30.Qe5 Rf6 31.Qe4 Bf5 32.Qb7+-) 1-0. BeepBeepImAJeep (2630) - onthe65thsquare (2035), lichess.org, 2016.

7.Nc3 Nbd7 8.Nf3 Nc5 9.d4 ed4 10.Nd4 Re8 11.Be2 Bf8 12.0-0 g6 13.Qc2 Bg7 14.Rad1 h5 15.Rfe1 Ng4 16.h3 Qh4?? (better 16...Ne5+=) 17.hg4+- hg4 18.g3 Qh5 (18...Qd8 19.Ba3+-) 19.Bf1 (19.Nd5 Kh7 20.Nc7 Rh8+-) 19...Nd7 (19...Bf5 20.e4+-) 20.Bg2 (20.Nd5 Rb8 21.Nc7 Rf8+-) 20...Ne5 (20...Nf6 21.b6! c6 22.Nc6 bc6 23.Bc6+- (23.Rd6?! Rb8+-)) 21.Qe2 (better 21.Nd5!? Nf3 22.Nf3 gf3 23.Bg7 Kg7 24.Qc3 Re5+-) 21...Bf6 (21...Rb8 22.b6! c5 23.Ndb5 Nf3 24.Kf1 Nh2 25.Kg1 Nf3 26.Kf1 Nh2 27.Kg1 Nf3=) 22.Nd5 Bd8 23.Nf4 Qh6 24.c5! dc5 25.Nb3 b6 (25...Nf3 26.Bf3 gf3 27.Qf3 c4+-) 26.Be5 (26.Ba8 Bf6 27.Kg2 Bf5+-) 26...Rb8 (26...Ra7 27.Bc6 Rf8 28.Kg2+-) 27.Rd8! Rd8 28.Bc7 (28.Bc7 Bf5 29.e4+-) 1-0. BeepBeepImAJeep (2565) - Kingscrusher_YouTube (2350), lichess.org, 2016.

7.Nc3 Nbd7 8.Nf3 Nc5 9.d4 e4 10.Nd2+= Nd3 11.Bd3 ed3 12.0-0 (12.Qb1 d5 13.Qd3 dc4 14.Nc4 Be6+/-) 12...Bf5 (12...d5 13.cd5 Nd5 14.Nd5 Qd5 15.e4+/-) 13.f3 (13.e4 Bg6+/-) 13...Bg6 14.e4 Nh5 15.Nb3 Bg5 16.Qd3 Nf4 17.Qd1 Bh6 18.Ne2 Qh4 19.g3 Nh3 (better 19...Ne2!? 20.Qe2 Qh3+/-) 20.Kg2+- Qh5 21.Bc1 (21.g4 Qh4 22.Qe1 Qe1 23.Rfe1 Nf4 24.Nf4 Bf4+-) 21...Rae8? (better 21...Bc1!? 22.g4 Qh4 23.Qc1 Ng5+/-) 22.Bh6 (22.g4!? Qh4 23.Qe1 Qe1 24.Re1 Bc1 25.Rac1 Ng5+-) 22...Qh6 23.Qc1 Qh5 24.Nf4 (better 24.g4!? Qh4 25.Qe1+-) 24...Nf4+/- 25.Qf4 f5 26.e5 de5 27.de5 Bf7 (27...b6 28.Nd4+/-) 28.Rab1 (better 28.Nc5!?+-) 28...g5 29.Qd4 (29.Qf5?! Bc4 30.Qe4 Bf1 31.Rf1 b6=) 29...Rd8 (29...b6+/-) 30.Qf2 (better 30.Qc3!? b6 31.Nd4+/-) 30...Bc4= 31.Rfe1 Bd5 32.Nd4 White prepares the advance e6 (worse 32.Na5 f4 33.Rf1 g4-/+) 32...g4 33.Kg1 gf3 34.Rbd1 (34.e6 Rfe8 35.Rbc1 Re7=) 34...Be4 (34...f4!?-/+) 35.e6 (35.Rc1 Rf7=) 35...Rfe8=+ 36.Rc1 Qh3 (better 36...Re7=+) 37.Red1 (37.Nf3 Re6 38.Ng5 Qh6 39.Re4 fe4 (39...Re4?? 40.Qa2 Re6 41.Qe6 Qe6 42.Ne6+-; 39...Qg5?! 40.Rf4=) 40.Rc7 Rf6 41.Qa2 Kh8 42.Rh7 Qh7 43.Nh7 Rd1 44.Kg2 Kh7+/-) 37...Re7?? (37...Qg2 38.Qg2 fg2 39.Kf2-/+) 38.Nb3?? (38.Nf3 Rde8 39.Rd7 Re6 40.Ng5+/- (40.Rdc7? Bf3 41.Rc8 Rc8 42.Rc8 Kg7-+)) 38...Rd1-/+ 39.Rd1 Re6 40.Nc5 Rd6 41.Rd6 cd6 42.Nb3 (42.Qa2 Kf8 43.Ne6 Ke7-/+) 42...d5 (42...Kf7 43.Na5 Bd5 44.Nb3 Bb3 45.Qf3-+) 43.Nd4 (better 43.Na5 d4 44.Nb3-/+) 43...Qh2?? (better 43...Qg2 44.Qg2 fg2-+) 44.Kh2+- Kf7 45.g4 (better 45.Nf3 h6+-) 45...Kf6 (45...fg4 46.Qh4+-) 46.Kg3 (46.Nf5 Kf7 47.Qb6 Bf5 48.gf5 Ke7 49.Qe6 Kd8 50.f6 f2 51.Qd6 Kc8 52.b6 f1N 53.Kh3 Ne3 54.Qc7) 46...Ke5 47.gf5 h5 48.Qe3 h4 (48...f2 49.Qf2 Kf6 50.Kf4 Ke7 51.Qh4 Kd6 52.Ne6 Bf5 53.Kf5 d4 54.Qd8) 49.Kh4 (49.Kg4 Kf6 50.Qh6 Ke7 51.Qg7 Kd8 52.Ne6 Ke8 53.Qf8 Kd7 54.Qd8) 49...f2+- 50.Qf2 b6 51.Qe3 Kd6 52.Kg5 (52.Qa3 Kd7 53.Nc6 Kc8 54.Qf8 Kc7 55.Qd8 Kb7 56.Qb8) 52...Kc5 (52...Kc7 53.Qc3 Kd7 54.Qc6 Kd8 55.Ne6 Ke7 56.Qc7 Ke8 57.Qd8 Kf7 58.Qf8) 53.Qf4 (53.Qc3 Kd6 54.Kf6 Kd7 55.Qc6 Kd8 56.Ne6) 53...Kb4 54.Kf6 Ka4 55.Ke5 Kb4 (55...Bc2 56.Qd2 Bb3 57.f6 Bc4 58.Qc2 Kb4 59.f7 a4 60.f8Q Ka5 61.Qc3) 56.f6 a4 (56...Bh1 57.Qd2 Kc4 58.Qc2 Kb4 59.Qb3 Kc5 60.Qc3) 57.f7 a3 (57...Bc2 58.Qd2 Ka3 59.f8Q Ka2 60.Qc2 Ka1 61.Qa3) 58.f8Q (58.f8Q Kc3 59.Qc1 Kd3 60.Qfa3) 1-0. BeepBeepImAJeep (2665) - Classy69 (2475), lichess.org, 2019.

6.c4 a6

7.Nc3 ab5 8.ab5 Bf5?? 9.Ra8+- Bg6 (9...Qd7 10.Nf3+-) 10.Nf3 Qd7 11.Be2 1-0. BeepBeepImAJeep (2595) – raeindown, lichess.org, 2017.

7.Nc3 c6 8.Nf3 c5 9.d3 h6 10.Be2 Bf5 11.0-0 Nbd7 (11...Re8 12.Nd2+=) 12.Nd2+= ab5 13.ab5 b6 (13...Ra1 14.Qa1 Be6 15.Qa7+=) 14.Ra8 Qa8 15.Bf3 Qb8 16.Nde4 Ne4 17.Be4 g6? (better 17...Be4 18.de4 Nf6+/-) 18.Bf5+- gf5 19.Qh5 Kh7?? (19...Kg7+-) 20.Qf5 Kh8 21.Qd7 Bh4 (21...Qe8 22.Qh3 Kg7 23.Nd5+-) 22.Nd5 Rg8 (22...Qd8 23.Qh3 Kg8 24.f4+-) 23.Qh3 Qd8 24.f4 h5 (24...Rg6+-) 25.fe5 Qg5 26.ed6 Kh7 27.Nf6 Kh6 28.Ng8 Kh7 29.Rf7 (29.Nf6 Kg6 30.d7 Kg7 31.d8Q Bf2 32.Rf2 Qg6 33.Nh5 Kh6 34.Nf4 Qh5 35.Qh5) 29...Kg8 30.Rg7 Qg7 31.Bg7 Kg7 32.Qh4 Kg6 33.d7 (33.d7 Kg7 34.Qg5 Kf7 35.d8Q Ke6 36.Qgf6) 1-0. BeepBeepImAJeep - ferzin (1685), lichess.org, 2017.

7.Nc3 c6 8.Nf3 Re8 9.Be2 Bf8 10.0-0 Nbd7 11.d4 ed4 12.Nd4 d5 13.bc6 bc6 14.cd5 (worse 14.Nc6 Qb6-/+) 14...cd5 15.Bf3 (15.Rb1!?+=) 15...Ne5= 16.Rc1 Nc4 (16...Rb8 17.Rb1=) 17.Ba1 (17.Nd5 Nb2 18.Qb3 Ra7 19.Nf6 Qf6+/-) 17...Ba3 (better 17...Ne5!?=) 18.Nd5+/- Bc1 19.Nf6 (19.Qc1?! Nd5 20.Qc4 Be6+=) 19...Qf6 20.Ba8 Ba3 (20...Bd2 21.Bc6 Rd8 22.Qe2+-) 21.Bc6 (21.Qd3 Be6 22.Ne6 Qe6+-) 21...Rf8? (21...Rd8 22.Qc2 Ne5 23.Be4+/-) 22.Qb3 (22.Bd5 Nb6 23.Ne6 Qh4 24.Nf8 Bf8+-) 22...Nd2? (better 22...Na5 23.Qa3 Nc6+/-) 23.Qa3+- Nf1 24.Kf1 Qg6 25.Qc1 Qd3 26.Kg1 a5 (26...Rd8 27.f3 Qg6 28.Be4+-) 27.Bb5 Qe4 28.h3 (28.Bc3 Bb7 29.f3 Qg6+-) 28...Bb7 29.Nf3 (29.f3!? Qe5+-) 29...Rc8 30.Qb2 f6 31.Bf1 Rc2 (31...Bd5 32.Qb5+-) 32.Qb3 Kf8 33.Bd4 Bd5 34.Qd3 (better 34.Qb5!? Rc1+-) 34...Qd3 35.Bd3 Rc1 36.Bf1?? (36.Kh2 Ke7+-) 36...Bf3? (better 36...Bc4 37.Nd2 Bf1 38.Nf1 Rc4+/-) 37.gf3+- Ra1 (37...Ke7+-) 38.Ba1 1-0. BeepBeepImAJeep (2555) - NaSil (2460), lichess.org, 2018.

7.Nc3 Nbd7 8.Nf3 Re8 9.Be2 ab5 10.ab5 Ra1 11.Qa1 e4 12.Nd4 Nc5 13.0-0 Nfd7 14.Nd5 Ne5 15.Ne7 Qe7 16.Nc2 f5 17.Bd4 Nb3 18.Qc3 Nd4 19.ed4 Ng6 20.f4 h5 (20...c6!?=) 21.Ne3 (21.Bh5 Kh7+-) 21...Qf6? (better 21...h4!?+=) 22.Bh5 Bd7? (22...c6+-) 23.d5?? (better 23.Nd5 Qf7 24.Qg3+-) 23...Qc3+/- 24.dc3 Kf7 (24...Kh7 25.Ra1+/-) 25.Ra1 Kf6 26.Bg6 Kg6 27.Kf2 Rb8 28.Ra7 Kf6 29.Nc2 g5 30.Ke3 gf4 (30...g4 31.Kf2+/-) 31.Kf4+- Bc8 (31...Rg8 32.Ne3 Bc8+-) 32.Ne3 Bd7 33.h3 Kg6 34.g4 fg4 35.hg4 Rf8 36.Ke4 (36.Nf5 Bc8+-) 36...Bc8 37.Nf5! Kg5 (37...Bf5 38.gf5 Double attack (38.gf5 Passed pawn)) 38.Ne7?? (better 38.b6 Re8 39.Kf3 Bf5 40.gf5 cb6 41.Rb7 Kf5 42.Rb6+-) 38...Re8-/+ 39.Kd4 Re7 40.c5 dc5 41.Kc5 b6?? (better 41...Re4 42.b6 cb6 43.Kb6 Rc4=+) 42.Kc6+- Bg4 (better 42...Rg7+-) 43.d6?? (43.Rc7 Re4+-) 43...Re3 (43...Bf3) 44.dc7+- Rc3 45.Kb6 Kf5 (45...Bf3 46.Ra3!! Ra3 47.c8Q+-) 46.Ra8 (better 46.Ra4!? Bd1 47.Ra3 Rc4+-) 46...Ke5 47.Rg8 (better 47.Rd8!?+-) 47...Bd7+/- 48.Rg5 Kd6 49.Rg6 Ke7? (49...Kd5 50.Rc6 Rc6 51.bc6=) 50.Kb7 (better 50.Rc6 Rc6 51.bc6=) 50...Be6?? (better 50...Bb5 51.c8Q Rc8 52.Kc8 Bd3+=) 51.b6 (51.Re6 Ke6 52.c8Q Rc8 53.Kc8 Ke7+-) 51...Kd7 (51...Bf5 52.Rg5 Be4 53.Kb8 Kd7+-) 52.Re6! Ke6 53.c8Q (53.c8Q Rc8 54.Kc8+-) 1-0. BeepBeepImAJeep (2560) - RPchess99 (2430), lichess.org, 2018.

7.Nf3 ab5 8.ab5 Ra1 9.Ba1 c6 10.Be2 Qa5 11.Nc3= Qa2?? (better 11...e4 12.Nd4 c5=) 12.Na2+- 1-0. BeepBeepImAJeep (2690) - Sankalp_Gupta (2710), lichess.org, 2020.

7.Nf3 ab5 8.ab5 Ra1 9.Ba1 e4 10.Nd4 Bg4 11.Be2 Be2 12.Qe2 c5 13.Nc2 Nbd7 14.0-0 Re8 15.Nc3 Bf8 16.f4 ef3 17.Qf3 Ne5 18.Qe2 Qd7 19.h3 Qe6 20.d3 d5 21.cd5 Nd5 22.Nd5 Qd5 23.d4 Nc4 24.Qf3 Qf3 25.Rf3 cd4 26.Bd4 f6 27.Rf4 Nd2 28.Bc3 Ne4 29.Bd4 Bd6 30.Rf3 g6 31.Bf6 Nf6 32.Rf6 Bc5 33.Kf2 b6 34.Ke2 Ra8 35.Rf2 Ra5 36.Nd4 Bd4 37.ed4 Rb5 38.Kd3 Rf5 39.Rb2 Rf6 40.Ke4 Kf7 41.d5 Ke7 42.Ke5 Rf5 43.Ke4 Rf6 44.Rc2 Kd7 45.Ke5 Rf5 46.Ke4 Rf6 47.g4 b5 48.Ke5 Rb6 49.Kd4 b4 50.Kc5 b3 51.Rb2 Rb7 52.h4 h5 53.gh5 gh5 54.Kd4 Kd6 55.Kc4 Rc7 56.Kd4 Rc5 57.Ke4 Rd5 58.Rb3 Rc5 59.Kf4 Kc6 60.Re3 Rd5 61.Re5 Kd6 62.Rd5 Kd5 63.Kg5 Ke6 64.Kh5 Kf7 65.Kh6 Kg8 66.Kg6 Kh8 67.Kh6 Kg8 68.Kg5 Kh8 69.Kh5 Kg8 70.Kg5 Kh8 71.h5 Kg7 72.h6 Kg8 73.Kh5 Kh8 74.Kg6 Kg8 75.Kg5 Kh8 76.Kh5 Kg8 77.Kg6 Kh8 78.Kf7 Kh7 ½-½. BeepBeepImAJeep (2745) - Andreyka02 (2595), lichess.org, 2020.

7.Nc3 ab5 8.ab5 Ra1

9.Qa1 b6 10.Nf3 Bb7 11.Be2 Nbd7 12.0-0 e4 13.Nd4 Nc5 14.Nf5 (14.f3 Qd7+=) 14...Qd7= 15.Ne7 Qe7 16.f4 ef3 (16...Ra8 17.Qe1=) 17.Bf3+= Ra8 18.Qd1 Nfe4 19.Ne4 Ne4 (19...Be4 20.Be4 Qe4 21.Rf4=) 20.d3 Nc5 21.Bd4 Bf3 22.Qf3 (worse 22.gf3 Ra2 23.Rf2 Qg5 24.Kf1 Rf2 25.Kf2 Qh5-/+) 22...Re8 23.e4 Ne6 24.Bc3 Ng5 25.Qg3 f6 (better 25...Ra8!?+/-) 26.h4+- Ne6 27.Bf6 Qd7 28.Bc3 Rf8 29.Qh3 Rf1 30.Kf1 Qf7 31.Qf3 Nf4 32.Kf2 (better 32.Ke1+-) 32...Nd3+= 33.Ke3 (33.Ke2 Nc1 34.Kd1 Nb3 35.Qf7 Kf7+=) 33...Qf3 (better 33...Qc4!? 34.Qh5 Qc5 35.Qc5 Nc5=+) 34.gf3+/- Nc5 35.Bd4 Ne6 36.f4 Kf7 37.f5 Nf8 (37...Nd4 38.Kd4 h5 39.e5 de5 40.Ke5+=) 38.Kf4 (38.e5 de5 39.Be5 Nd7 40.Bc7 g6 41.fg6 hg6+-) 38...g6 (38...Nd7 39.h5+=) 39.Be3 (39.h5 Nd7+/-) 39...gf5? (39...Nd7 40.fg6 hg6 41.Bd4+=) 40.Kf5 (40.ef5!? Nd7 41.Bd4+/-) 40...Nd7 41.Kf4 (better 41.Bd4+=) 41...Ne5=+ 42.h5 (better 42.Kg5=+) 42...Ng6?? (better 42...Nc4 43.Bc1 Kf6-/+) 43.hg6+- Kg6 (43...hg6 44.Bd4+-) 44.Kg4 (better 44.e5 Kf7 45.ed6 cd6 46.Bb6+-) 44...d5 (44...Kf6 45.Bd4 Ke7+-) 45.Kh4 (better 45.cd5 Kf7 46.Bf4+-) 45...dc4 46.Bd4 Kf7 47.Bc3 Ke6 48.Bd4 c6?? (48...Kf7 49.Be5 Ke6 50.Bc7+-) 49.Kg4?? (49.bc6 Kd6 50.Bb6 Kc6+-) 49...c5?? (better 49...cb5 50.Bc3 h5 51.Kh5 b4=) 50.Bc3+- Kd6 51.Kg5 Ke6 52.Kf4 h5 (52...Kd6 53.e5 Ke6 54.Ba5+-) 53.e5 (53.Kg5!? Ke7+-) 53...h4 54.Kg4 h3 55.Kh4 (55.Kg3 h2 56.Kh2 Kd5+-) 55...Kf5 (better 55...h2 56.Kg3 h1Q-+) 56.Kg3 Ke4 (56...Ke6 57.Kh3 Kf5 58.Kh2+-) 57.Kh3 (57.e6 Kd3 58.Bg7 c3+-) 57...Kd3 (57...Kf5+-) 58.Kg4 (better 58.Ba1 c3 59.e6 c2+-) 58...Kc3 59.e6 Kb4 (59...Kb2 60.e7 c3 61.e8Q+-) 60.e7 c3 61.e8Q c2 62.Qe4 (62.Qe3 c4+-) 62...c4 (62...Kb3 63.Qe3 Kb2 64.Qe5 Kb1 65.Qf5+=) 63.Qe3 (63.Qc2 Kb5 64.Kf4 Kc5+-) 63...c3 (63...Kb5 64.Kf4 Kc6 65.Ke4+-) 64.Qc1 Kb3 (64...Kb5 65.Qc2 Kc4 66.Qa4 Kd3 67.Kf3+-) 65.Kf3 1-0. BeepBeepImAJeep (2485) - LwGhCh (2415), lichess.org, 2018.

9.Qa1 c6 10.Nf3 Be6 11.Be2 Nbd7 12.d4 ed4 13.Nd4 Bg4 14.bc6 Nc5 (14...Be2!? 15.Nce2 Ne5 16.cb7 Qb6+/-) 15.cb7 Be2 16.Nc6 (16.Nce2!? Nd3 17.Kf1+/-) 16...Qc7+= 17.Ne7 Qe7 18.Ke2 (18.Qa7 Nfd7 19.Ke2 Qh4+=) 18...Qb7= 19.Nb5 Qe4 20.Bf6 Qd3 (better 20...Qc4!? 21.Kf3 Qd5 22.Ke2 Ra8=+) 21.Ke1+/- Qc4 22.Nd6 (better 22.Na3 Qd5 23.Bb2+/-) 22...Qc2= 23.Bh4 Nd3 (better 23...Rd8! 24.g4 Nd3 25.Kf1 Qc6=) 24.Kf1+/- Rb8 25.g4 (25.Nb5!=+) 25...Rb1-/+ 26.Kg2 Ra1 27.Ra1 h6 (27...Qc6 28.Kg1 h5 29.Nf5-/+) 28.Nf5 Qc6 29.Kg1 Ne5?? (29...Qf3 30.Nd6-/+) 30.Nd4 (better 30.Ne7 Kh7 31.Nc6 Nc6 32.f4+-) 30...Nf3-/+ 31.Nf3 Qf3 32.Bg3 Qg4 33.Ra8 Kh7 34.Rd8 Qe6 35.Rd4 Qa2 36.h4 Qb1 37.Kg2 Qf5 38.Rf4 Qa5 39.Rd4 Qa8 40.f3 f5 41.Rd2 (41.e4 Qa2 42.Bf2 fe4 43.fe4 g5-/+) 41...Qc6 42.Rf2 Qc3 43.e4 Qd3 44.ef5 Qf5 45.Bh2 g5 46.Bg3 gh4 47.Bh4 Qg6 48.Bg3 Qh5 49.f4 Qg6 50.Rf3 Qf6 51.Kf2 Qb2 52.Kg1 Qc1 53.Kg2 Qc4 54.Rf2 Qd5 55.Kh2 Qe4 (55...Qf5 56.Kg2-/+) 56.f5 Qe1 (better 56...Kg7!?-/+) 57.f6=. BeepBeepImAJeep (2620) - B0N0B0 (2470), lichess.org, 2016.

9.Qa1 c6 10.Nf3 Bf5 11.d4 Nbd7 12.Be2 ed4? (better 12...Re8!?=) 13.Nd4+/- Bg6 14.bc6 bc6 (14...Ne5!?+/-) 15.Nc6+- Qe8 16.Ne7 (16.Nb5!? Nc5 17.Ne7 Qe7 18.Bf6 gf6+-) 16...Qe7+/- 17.0-0 Nc5 18.Rd1 (18.Nb5 Ne8+/-) 18...Rb8 19.Nb5 Nce4 (19...Ne8!?+/-) 20.Ba3 h5 (20...Ne8 21.Qd4+-) 21.Qd4 Ng4 (21...Ne8 22.f3 Ng5 23.e4+-) 22.Bg4 hg4 23.Bd6 Nd6 24.Qd6 Qb7 25.Qc7?? (better 25.Qf4+-) 25...Qc7+/- 26.Nc7 Bc2? (better 26...Rc8!? 27.Nb5 Rc4+/-) 27.Rc1+- Be4 28.Nb5 Rc8?? (28...Kf8 29.Nd6 Bc6 30.c5+-) 29.Nd4 (better 29.Nd6 Rc6 30.Ne4+-) 29...Bd3 30.c5 Be4 31.f3 Kf8 (31...gf3 32.gf3 Bc6+-) 32.fe4 1-0. BeepBeepImAJeep (2745) - PadreJulian (2815), lichess.org, 2020.

9.Qa1 Nbd7 10.Nf3 Nc5 11.d4 ed4 12.Nd4 Nce4 13.Ne4 Ne4 14.Bd3 Nc5 15.Be2 Bf6 16.0-0 Re8 17.Rd1 Ne4 18.Bf3 Ng5 19.Be2 Bd7 (19...Qe7 20.Nf3 Bb2 21.Qb2=) 20.Nf3 (20.b6 Ne4+=) 20...Nf3 (20...Bb2!? 21.Qb2 Ne4=) 21.Bf3+= Bb2 22.Qb2 b6 23.Ra1 h6 24.Qd4 Qg5 25.Ra7 Qd8 26.h3 Re5?? (26...Be6 27.Bc6 Rf8 28.Kh2+/-) 27.Bd5 (27.Ra8 Bc8 28.Bb7 Re8 29.Rc8 Qe7+-) 27...Be6?? (better 27...Re8+/-) 28.f4 (better 28.Ra8 Bc8 29.Bb7+-) 28...Bd5 29.fe5 (29.cd5?! Re7+=) 29...Bg2 (29...Be6+-) 30.Kg2 Qg5 31.Kf2 de5 (31...Qf5 32.Qf4 Qc2 33.Kg3 Qg6 34.Kf3 Qh5 35.Ke4 Qh3 36.Rc7 Qh1 37.Qf3 d5 38.cd5 Qb1 39.Kf4 Qb5 40.d6+-) 32.Ra8 (better 32.Qe4!? f5 33.Qe5 Qh4 34.Kg2 Qh5+-) 32...Kh7 33.Qe4 g6 34.Qf3 (34.Rc8 Qe7 35.Qc6 Qh4 36.Ke2 Qh3 37.Rc7 Kg7+-) 34...Kg7 (34...Qh4 35.Qg3 Qe4 36.Re8 Qc2 37.Kg1 Qc1 38.Kg2 Qc4 39.Re7+- (39.Qe5?! Qe2 40.Kg3 Qe1 41.Kf3 Qf1 42.Ke4 Qc4 43.Qd4 f5 44.Kf3 Qf1 45.Kg3 Qg1 46.Kf4 Qf1 47.Kg3 Qg1 48.Kf4 Qf1 49.Kg3=)) 35.Ra7 (better 35.Re8!? Qh4 36.Qg3 Qf6 37.Ke2 e4+-) 35...Qg4 (35...Qh4 36.Qg3 Qe7+-) 36.Qg4 (36.Qg4 e4 37.Rc7 Kh8 38.Rf7 Kg8 39.Qg6 Kh8 40.Qg7) 1-0. BeepBeepImAJeep (2735) - zsoltik (2415), lichess.org, 2017.

9.Qa1 Nbd7 10.Nf3 Nc5 11.d4 ed4 12.Nd4 Re8 13.Be2 Bf8 14.0-0 h6 15.Rd1 Bg4 16.Bg4 Ng4 17.Nd5?? (17.Nf3 Nf6+=) 17...c6?? (better 17...Qh4 18.Nf3 Qf2 19.Kh1 c6-+ (19...Ne3?! 20.Ne3 Re3 21.Bd4=)) 18.Nf4= Qh4 19.Nh3 Ne5 20.Qc1 (20.Qa2 g6=) 20...Qe7 (20...Ncd3 21.Qc2 Nb2 22.Qb2=+) 21.Qc3 (21.Qc2!?=) 21...Na4=+ 22.Qc2 Nb2 23.Qb2 Nc4 24.Qc3 Ne5 (24...cb5!? 25.Nb5 Rc8=+) 25.bc6= bc6 26.Nc6 Qc7 27.Rc1 Qd7 (27...Ra8 28.Kf1=) 28.Ne5 (28.Nd4!?+=) 28...de5= 29.Qc2 Rd8 30.f3 Qd2 31.Qd2 Rd2 32.Nf2 f5 33.Re1 (33.g4 fg4 34.Ng4 Bd6=) 33...Bc5 34.Kf1 f4 (34...Kf7 35.Re2 Rd6 36.e4=) 35.Ng4 h5 36.Ne5 Be3 37.Nc4 Rf2 38.Kg1 Re2 39.Kf1 Rf2 40.Kg1 Rf3 41.Ne3 Re3 42.Re3 fe3 43.Kf1 Kf7 44.Ke2 Kf6 45.Ke3 Ke5 46.Kf3 Kf5 47.h4 Ke5 48.Ke3 Kf5 49.Kf3 Ke5 50.Ke3 Kf5 51.Kf3 ½-½. BeepBeepImAJeep (2570) - thujer (2620), lichess.org, 2017.

9.Qa1 Nbd7 10.Nf3 e4 11.Nd4 Nc5 12.Be2 Bg4 13.0-0 Be2 14.Nde2 Nd3 (14...c6 15.Nd4 Qd7 16.f3=) 15.Ba3 (15.Ng3 d5 16.cd5 Bb4+=) 15...b6 (15...Qd7 16.Bb2 c6=+ (16...Nb2?! 17.Qb2 Qe6 18.Qa2=)) 16.Qb1= Nc5 (better 16...Ne5!? 17.Ne4 Ne4 18.Qe4 Qa8 19.Qa8 Ra8+=) 17.Bc5+/- dc5 18.Ne4 Ne4 19.Qe4 Qd2 20.Nf4 (20.Qe7 Qe2 21.Qc7 Qc4 22.Qb6 h6+/-) 20...Qd8 21.Nd5 Bd6 22.Rd1 Re8 23.Qf3 (23.Qf5 Qh4 24.f4 Re6+=) 23...Qc8 (23...Qh4!? 24.Nf4 Bf4 25.Qf4 Qf4 26.ef4 Kf8=) 24.g3 Qe6 25.Ra1 g6? (25...h6 26.Qe2+=) 26.Ra7 (better 26.Nf6 Kg7 27.Ne8 Qe8 28.Qd5+-) 26...Rc8 27.Qf6 Qf6 28.Nf6 Kg7 29.Ne4 Rb8 (29...Be5!?+=) 30.Nd6+/- cd6 31.Rd7 Kf8 32.Rd6 Ke7 33.Rc6 Kd7 34.Kg2 Ke7 35.Kf3 f6? (35...Rb7 36.g4+-) 36.h4 (36.Rc7!? Ke6 37.Rh7 Ra8+-) 36...Rb7 37.Ke4 (better 37.g4 Kf7+-) 37...Kf7? (37...h5 38.f3+-) 38.g4 (38.Kd5!? Ke7 39.Re6 Kf7+-) 38...Ke7 39.Kf4 Kf7 40.h5 Ke7 (40...h6 41.hg6 Kg6 42.f3+-) 41.e4 Kf7 42.f3 Ke7 43.hg6 hg6 44.g5 fg5 45.Kg5 Kd7 (45...Rd7 46.Rb6 Rd4 47.Rg6 Rc4 48.b6+-) 46.Rg6 Rb8 47.Rg7 Kd6 (47...Ke6 48.f4 Ra8+-) 48.Rg6 (48.f4 Re8 49.e5 Re5 50.fe5 Ke5 51.Rd7+-) 48...Ke5 (48...Kd7 49.e5 Re8+-) 49.f4 Ke4 50.Rd6 (50.Re6 Kd4 51.f5 Kc4+-) 50...Rg8+/- 51.Kf6 Kf4? (51...Rf8 52.Ke7 Rf4 53.Rb6 Kd4+-) 52.Rb6+- Ke4 (52...Ke3 53.Rd6 Rg4 54.Ke6 Rc4 55.Kd5+-) 53.Rd6 Rf8 54.Ke7 Rf4 (54...Rb8+-) 55.b6 Rg4 56.b7 (better 56.Kd7+-) 56...Rg7= 57.Ke6 Rb7 58.Rc6? (58.Rd5 Rb4=) 58...Rb4?? (better 58...Kd4-+) 59.Rc5= Kd4 60.Rd5 Kc4 61.Rh5 Kb3 62.Kd7 Rc4 63.Rh3 Kb4 64.Rh5 Rc3 65.Rh7 Kb3 66.Rh8 Kc2 67.Ke6 Kb3 68.Kf5 Kc2 69.Ke4 Rd3 70.Rh2 Rd2 71.Rh6 Kc1 72.Rc6 (72.Rc6 Kd1 73.Rc8=). BeepBeepImAJeep (2610) - JAMAISJEPAYE (2130), lichess.org, 2017.

9.Qa1 Be6 10.Nf3 c6 11.d4 e4 12.Nd2 d5 13.cd5 cd5 14.Be2 Nbd7 15.0-0 Bd6 16.f3 (16.Ba3 Qe7 17.Bd6 Qd6 18.Rc1=) 16...Ne8 (better 16...ef3!? 17.Bf3 Qc7=+) 17.fe4+= Qg5 18.Nd1 Bh3 19.Bf3 Nef6? (better 19...Nc7+/-) 20.e5+- Ng4 (20...Bb4 21.Bc3 (21.ef6?! Bd2 22.fg7 Re8+-) 21...Bc3 22.Qc3+- (22.Nc3?! Qe3 23.Kh1 Rc8+-)) 21.ed6 (21.gh3?! Ne3 22.Kh1 Nf1 23.Nf1 Bb4 24.Bd5 b6+-) 21...Ne3 22.Ne3 Qe3 23.Kh1 (23.Rf2!? Be6+-) 23...Qd2 24.gh3 Nf6 25.Bg2 Ne4 (25...Qb4 26.d7! Qb5 27.Ba3+-) 26.Qc1 Qe2 (26...Qb4 27.Ba3 Qb5 28.Qc7+-) 27.Ba3 (27.d7 Nf2 28.Kg1 Nd3+-) 27...Nf2 (27...Qb5 28.Qc7 Qa6+-) 28.Kg1 Nd3 29.Qg5 f6 (29...Qe6 30.Bd5 h6 31.Be6 hg5 32.Rf7 Kh7 33.Bf5 Kh6 34.Rf8 g4 35.d7 Nf4 36.d8Q Ne2 37.Kf2 g3 38.Ke2 g6 39.Bc1 g5 40.Qg5) 30.Qg3 (30.d7 Kh8 (30...fg5?? 31.Rf8) 31.Bf8 Qf1 32.Bf1 fg5 33.d8Q Kg8 34.Qe7 Nf4 35.Qg7) 30...Qe6 (30...Rd8 31.d7 Rd7 32.Qb8 Kf7 33.Bd5 Rd5 34.Qb7 Kg6 35.Qd5 Qe3 36.Kh1+-) 31.Qd3 1-0. BeepBeepImAJeep (2720) - Andreyka02 (2585), lichess.org, 2020.

9.Qa1 Be6 10.Nf3 c6 11.Be2 Nbd7 12.d4 ed4 13.Nd4 cb5 14.Ne6 (14.cb5 Qb6+=) 14...fe6= 15.cb5 Nc5 16.0-0 d5 17.Rd1 Nfe4 (17...Bd6!?=) 18.Ne4+= Ne4 19.Bg7 (19.Bg4 Kf7 20.Bg7 Bf6 21.Bf6 Qf6+/-) 19...Rf2 20.Bg4 (better 20.Bf3 Rd2 21.Rf1+/-) 20...Qd6? (better 20...Bf6 21.Bf6 Rf6=) 21.Bh6?? (better 21.Be5 Qb6 22.Bd4+-) 21...Bf6?? (21...Rf6 22.Qa8 Bd8 23.Bf3 Rh6 24.Be4 Qh2 25.Kf2-/+) 22.Qb1?? (better 22.Qa8 Bd8 23.Bf3 Rf3 24.gf3+-) 22...Be5 (22...Nc3 23.Qc1 Nd1 24.Bd1 Ra2 25.Qc8 Bd8=) 23.Qe4= Bh2?? (23...Rf6 24.Bg5 Rg6 (24...de4?? 25.Rd6 Bd6 26.Bf6+-) 25.Be6 Qe6+/-) 24.Kf2+- Qg3 (24...de4 25.Rd6 Bd6 26.Be6 Kh8+-) 25.Ke2 (25.Kf1 Qf2 26.Kf2 Kh8 27.Qe6 Bg3 28.Kg3 d4 29.Qe8) 25...de4 (25...Qg2 26.Qg2 Kf7 27.Qf2 Ke8 28.Qf8 Kd7 29.Rd5 Bd6 30.Qd6 Ke8 31.Qe6) 26.Bh5 (26.Be6 Kh8 27.Rd8 Qg8 28.Rg8) 26...Qg2 27.Ke1 Bg3 0-1. BeepBeepImAJeep (2730) - aliabedi6081 (2550), lichess.org, 2020.

9.Qa1 Be6 10.Nf3 Nbd7 11.Be2 Nc5 (11...Bg4 12.d3=) 12.d4 ed4 13.Nd4 d5 14.0-0 dc4 15.Ne6 Ne6 16.Bc4 Qd6 17.Rd1 Qb4 18.Be6 fe6 19.Rd4 Qb3 20.h3 Bc5 21.Rd1 h6 22.Ne2 (22.Rd2 Bb4 23.Qd1 Qd1 24.Rd1 Kf7=) 22...Qb5 (better 22...Be3!? 23.Re1 Bc5-/+) 23.Nf4= Qb6 (23...Qe8 24.Qa2 Ne4 25.Qe6 (worse 25.Ne6 Qf7-/+) 25...Qe6 26.Ne6=) 24.Be5 (24.Ng6 Rf7 25.Rd8 Bf8+/-) 24...Be3 (better 24...Qc6=) 25.fe3+- Qe3 26.Kh1 Ne4 27.Re1 Ng3 28.Kh2 Qb3? (28...Qf2 29.Ne6 Nf1 30.Kh1+-) 29.Ne6! (29.Bc7?! Rf6+-) 29...Rf2?? (29...Qe6 30.Bg3 Discovered attack (30.Bg3 Deflection; 30.Bg3 Overloading)) 30.Bg3 (30.Bg3 Rf6 31.Qa8 Kh7 32.Nf8 Rf8 33.Qf8 Qc2 34.Re7 Qg6 35.Be5 Qg2 36.Kg2 Kg6 37.Qg7 Kf5 38.Qg4) 1-0. BeepBeepImAJeep (2510) - Kjetil_Lie80 (2435), lichess.org, 2019.

9.Ba1 Nbd7 10.Be2 Re8 11.0-0 Nf8 12.d4 e4 13.Nfd2 Ng6 14.Nc3 Bf5 15.Qc2 e4 draws heavy fire 15...Bf8 16.Rc1 h5 (16...Qe7 17.Bb2+=) 17.Nd5 (17.Bb2 h4+=) 17...c6 (17...Nd5!? 18.cd5 Qg5+=) 18.Nf6+/- Qf6 19.bc6 bc6 20.d5 Qg5 21.dc6 Nh4 22.g3 Ng6 23.c7 h4 24.Ne4! Be4 (24...Re4 25.c8Q Decoy; 24...Be4 25.c8Q Decoy) 25.Qe4?? (better 25.c8Q Rc8 26.Qe4+-) 25...Re4=+ 26.c8Q hg3 27.hg3 Ne5?? (better 27...Re3 28.Bf1 Rg3 29.fg3 Qe3 30.Kg2 Qd2 31.Kg1 Qc1-/+) 28.Be5 (28.Kg2 Qg6+-) 28...Qe5 29.Rd1 Qe8 30.Qe8 Re8 31.Kg2 Rc8 32.Rd4 Rc5 33.Bf3 f6? (better 33...g5!?+/-) 34.Bd5+- Kh7 35.Re4 (better 35.Rh4 Kg6 36.g4+-) 35...Kg6? (35...g6 36.Re8 Kg7 37.g4+-) 36.Re6 (better 36.Re8 Rd5 37.cd5+- (37.Rf8?! Rc5+/-)) 36...Kf5?? (better 36...Rc7+-) 37.Re8 Rd5 (37...Ra5+-) 38.cd5 (38.Rf8?! Rc5+=) 38...Be7 (38...g5 39.e4 Kg6 40.Rf8+-) 39.Re7 g5 40.Re6 (40.Re6 Kg6 41.Kf3+-) 1-0. BeepBeepImAJeep (2615) - Mrsunto5 (2025), lichess.org, 2017.

6.c4 c6

7.Nc3 a6 8.Nf3 Be6 9.Be2 Nbd7 10.0-0 Nc5 11.d4 Nce4 12.de5 Nc3 13.Bc3 Ne4 14.Bb2 cb5 15.cb5 ab5 16.ab5 d5 17.Nd4 Bc5 (17...Qc7 18.Ne6 fe6 19.Bd3+/-) 18.Ne6 (18.f3!? Ra1 19.Ba1 Ng5+-) 18...fe6+/- 19.Bd4 (19.Ra8 Qa8 20.Bf3 Qa2 21.Be4 de4+/-) 19...Qb6 20.Bc5 Qc5 21.Ra8 Ra8 22.Bd3 Nc3 23.Qg4 Nb5? (better 23...Qc8+/-) 24.Qe6+- Kh8 25.Qf5 (better 25.Qh3!? g6 26.Bg6 Qc7+-) 25...g6 26.Qf6 Kg8 27.e6 Qf8?? (27...Nd6 28.Rd1+-) 28.Qe5 (better 28.Qf8!? Kf8 29.Bb5 Ke7+-) 28...Nd6? (28...Qd6 29.Qb2 Nc7 30.Qb7+-) 29.Qd5 (better 29.e7!? Qb8 30.Qd5 Kg7 31.Qe5 Kf7+-) 29...Qe7 30.e4 Ne8 (30...Rd8 31.Qb3+-) 31.e5 (31.Rb1 Rb8+-) 31...Ng7 (31...Rd8 32.Qb3+-) 32.Bc4 1-0. BeepBeepImAJeep (2545) - voschessclub1 (2055), lichess.org, 2019.

7.Nc3 cb5 8.cb5 d5 9.Nf3 d4 (9...e4 10.Nd4=+) 10.Nb1 (10.ed4 ed4 11.Ne2 d3=) 10...de3=+ 11.fe3 e4 12.Nd4 Ng4 (12...Bd6 13.Qc2=+) 13.Be2 (13.Nc3 f5 14.Bc4 Kh8 15.Rc1=) 13...h5 (better 13...Bd6!? 14.Bg4 Qh4 15.g3 Bg3 (15...Qg4?! 16.Qg4 Bg4 17.Nc3=+) 16.hg3 Qh1 17.Kf2 Qh2 18.Kf1 f5-+ (18...Qg3?! 19.Bc8 Rc8 20.Qh5=)) 14.0-0 (14.Nc3 Re8 15.Qb1 Bd6=+) 14...Qc7 (14...Bd6 15.Bg4 Bg4 16.Qe1=) 15.g3 Bd6 16.Kg2 Bd7 (better 16...Be5!?=) 17.Nc3+/- f5 (17...Re8 18.Rc1 Qd8 19.Bc4+-) 18.Nd5 (18.Rc1 Qb6+-) 18...Qd8 (18...Qa5 19.Bc4 Kh8 20.h3+-) 19.Nf4 (better 19.Bc4 Kh7 20.h3+-) 19...h4? (better 19...Bf4 20.Rf4 Kh7+/-) 20.Nfe6 Qf6 (20...Be6 21.Ne6 Qc8 22.Nf8 Bf8 23.Bg4 fg4 24.Qb3 Kh7+-) 21.Nf8 Nh2 (21...Qf8 22.Bg4 g6 23.Be2+-) 22.Nd7 Nd7 (22...Qg6 23.Bc4 Kh7+-) 23.Rf5 Qg6 (23...Bg3 24.Rf6 Nf6+-) 24.g4 (better 24.Bc4 Kh7 25.Rh5 (25.Kh2?? Qg3 26.Kh1 Qh2) 25...Qh6 26.Rh6 gh6 27.Qh5 Rg8 28.Nf5 h3 29.Kh1 Rg6 30.Bg8 Kg8 31.Qg6 Kf8 32.Bg7 Kg8 33.Nh6) 24...h3 (24...Nf6 25.g5 Rf8 26.Qb3 Kh7 27.Qe6+-) 25.Kh1 Ne5 (25...Ng4 26.Bg4 Nf6 27.Qb3 Kh7+-) 26.Qb3 Nf7 27.Rf7! Kh7 (27...Qf7 28.Qe6 Double attack (28.Qe6 Decoy)) 28.Rf5 Ng4 29.Rg1 (better 29.Bg4 Qg4 30.Rg1 Qg1 31.Kg1 h2 32.Kh1+-) 29...h2 30.Rg4 Qh6 31.Qd1 (31.Nf3 Rg8 32.Ng5 Qg5 33.Rfg5 Kh6 34.Qg8 Be5 35.Qh8) 31...Rf8 32.Qf1 Rf5 33.Qf5 g6 (33...Kh8 34.Bc4 Qf6 35.Qh5 Qh6 36.Qe8 Bf8 37.Qf8 Kh7 38.Qg8) 34.Qg5 (34.Qf7 Kh8 35.Ne6 Be5 36.Be5 Qg7 37.Qg7) 34...Qg7 35.Qh4 (35.Rh4 Kg8 36.Bc4 Qf7 37.Qg6 Kf8 38.Qf7) 35...Kg8 (35...Qh6 36.Nf5! a6 37.Qh6 Kg8 38.Bc4) 36.Qd8 (36.Bc4 Qf7 37.Rg6 Kf8 38.Qd8 Qe8 39.Rg8) 36...Bf8 37.Qd5 (37.Bc4 Kh7 38.Rh4 Qh6 39.Rh6 Kh6 40.Qh4 Kg7 41.Nf5) 37...Qf7 (37...Kh8 38.Rh4 Qh6 39.Nf3 Bg7 40.Rh6) 38.Qf7 (38.Rg6! Bg7 39.Ne6 Qf6 40.Rg7 Qg7 41.Ng5 Kh8 42.Qd8) 38...Kf7+- 39.Rf4 Ke7 40.Re4 (40.Ba3 Kd8 41.Rf8 Kc7 42.Ne6 Kb6 43.Bb4 a6 44.a5 Ka7 45.b6) 40...Kd6 41.Rf4 (41.Re8 Kd5 42.Rf8 Kd6 43.Ba3 Ke5 44.Bc4 g5 45.Bd3 g4 46.Rf5) 41...Kc5 42.Rf8 Kb4 (42...Kd6 43.Ba3 Kc7 44.Ne6 Kb6 45.Bb4 a6 46.a5 Ka7 47.b6) 43.Ne6 (43.Ne6 b6 44.Bc3 Kb3 45.Nd4 Ka4 46.Rf1 a5 47.Ra1; 43.Bc3 Kc5 44.Rd8 a6 45.Ne6 Kb6 46.a5 Ka7 47.b6) 1-0. BeepBeepImAJeep (2590) - tannuk (2405), lichess.org, 2016.

7.Nc3 cb5 8.cb5 Nbd7 9.Nf3 Re8 10.d4 Nf8 (10...Qa5!?=) 11.de5+= de5 12.Qd8 (12.Ne5 Qc7 13.Nf3 Bg4+=) 12...Bd8= 13.Be2 Bg4 14.0-0 Bf3 15.Bf3 Ng6? (better 15...e4 16.Be2 Ba5+=) 16.Bb7+- Rb8 17.Bc6 Re7 18.Ba3 Re6 19.Nd5 (better 19.Rfd1!?+-) 19...Rc6+= 20.bc6 Nd5 21.Rfd1 Nc7 22.Rab1 Bf6?? (better 22...Rc8+/-) 23.Rb8 Bd8 24.Rdd8 Ne8 25.Re8 Nf8 26.Rf8 1-0. BeepBeepImAJeep (2630) - TheFord (2410), lichess.org, 2019.

7.Nc3 d5 8.Nf3 d4 9.Nb1 c5 10.Ne5+= Re8 11.Nf3 Bd6 (11...Ne4 12.Bd3 (12.ed4?? Bh4 13.Qc2 Nf2 14.Be2 Nh1 15.Kf1 Bg4-+) 12...Bf5 13.ed4 Nf2 14.Kf2 Bd3 15.Qb3=) 12.Be2 Bf5 13.h3 d3 14.Bf1 a6 (14...Bc7 15.Ra3+=) 15.Qb3 ab5 (15...Be7 16.Ne5+/-) 16.ab5+/- (16.Qb5?! Na6 17.Bc3 Ne4=) 16...Ra1 17.Ba1 Bc7 (17...Be7+/-) 18.Nc3 (18.Bf6 Qf6 19.Bd3 Nd7+/-) 18...Nbd7 (18...Qd6 19.Na2+/-) 19.Nd5 (better 19.Nd1!?+/-) 19...Nd5= 20.cd5 Nf6 (better 20...Be5!? 21.Ne5 Ne5 22.Be5 Re5 23.Bd3 Bd3 (worse 23...Rd5 24.Bf5 Rf5 25.Qc2+/-) 24.Qd3 Rd5=) 21.Bd3+/- Bd3 22.Qd3 Nd5 23.0-0 Nb4? (23...Qd6 24.Qc4+/-) 24.Qd8 (24.Qc3!? f6 25.Qc5 Bd6 26.Qc4 Kh8+-) 24...Rd8+/- 25.d4 Bb6 26.dc5 Bc5 27.Rc1 Nd3 28.Rd1 Rd6 29.Bd4 Bd4 30.Rd3 Bc5 31.Rd6 Bd6 32.Kf1 f6 33.Ke2 Kf7 34.Kd3 Ke6 35.Kc4 b6 36.Nd4 Ke5 37.Ne2 Bc5 38.Nc3 Bd6 39.f4 Kf5 (better 39...Ke6!?+-) 40.Kd5 Bc5 41.g4 Kg6 42.e4 Be3 43.Ne2 (43.e5 Bf4 44.e6 Bg5+-) 43...Kh6 (43...Kf7+-) 44.Ke6 Kg6 45.e5 fe5 46.fe5 Kg5 47.Kf7 g6 48.e6 Bc5 49.Kg7 (49.Nc3 Ba3+-) 49...h5 (49...Bb4 50.Nd4+-) 50.gh5 gh5 51.Kf7 Kh4 52.e7 Be7 53.Ke7 Kh3 54.Nf4 Kg4 55.Nh5! Kh5 56.Kd6 Kg5 57.Kc6 Kf6 58.Kb6 Ke7 59.Ka7 Kd8 60.b6 Kd7 61.b7 Kc6 62.b8Q Kc5 63.Qb6 Kc4 64.Qc7 Kd3 65.Qd7 Ke4 66.Qe8 Kd3 67.Qd8 Kc2 68.Qg8 Kd2 69.Kb6 Ke2 70.Kc5 Kf3 71.Qg6 (71.Qg6 Ke3 72.Qg5 Ke4 73.Qd5 Kf4 74.Kd4 Kg3 75.Ke3 Kg4 76.Qe6 Kg3 77.Qg6 Kh4 78.Kf4 Kh3 79.Qg3) 1-0. BeepBeepImAJeep (2730) - Buffy7 (2680), lichess.org, 2020.

7.Nc3 d5 8.Nf3 d4 9.Nb1 e4 10.Nd4= c5 11.Nb3 b6 (11...Bf5 12.Be2+=) 12.Be2+= Bb7 13.0-0 Nbd7 14.d3 ed3 15.Bd3 Qc7 16.Be2 (16.a5 Rad8+/-) 16...Bd6+= 17.h3 Rad8 18.N1d2 Ne5 19.Rc1 (19.a5 Qe7+/-) 19...Rfe8 20.Qc2 Ng6 (20...a6 21.Rfd1+=) 21.Bf3 (21.Bf6 gf6 22.Bf3 Nh4+-) 21...Bf3 (21...Bh2 22.Kh1 Be5 23.Bb7 Qb7 24.a5+/-) 22.Nf3 (22.Bf6 Bh2 23.Kh1 Bg2 24.Kg2 gf6+=) 22...Ne4 23.Rcd1 h6 24.Nbd2 Ng5 (24...Qe7!?+/-) 25.Ng5+- hg5 26.Qf5 (26.Nf3 g4 27.hg4 Be5+-) 26...Ne5 (26...Bh2 27.Kh1 Be5 28.Be5 Qe5 29.Qe5 Ne5+= (29...Re5? 30.Nf3 Ree8 31.Rd5+-)) 27.Qg5+- f6 28.Qf5 Qd7 (28...Nd3 29.Ba1+-) 29.Qd7 Rd7 30.Be5 Be5 31.Nf3 Red8 32.Rd7 Rd7 33.Ne5 fe5 34.a5! Rd3 (34...ba5 35.Ra1 Decoy) 35.ab6 ab6 36.Rc1 Kf7 37.Kh2 Ke6 38.Kg3 Kf5 39.Kf3 e4 40.Kg3 Rb3 41.Rc2 Ra3 42.Rd2 Ke5? (better 42...Ra4+-) 43.Rd5 Ke6 44.Rg5 Rc3 45.Rg6 Kf7 46.Rb6 Rc4 47.Rb7 Kf6 48.Rc7 Rb4 (48...Rc2 49.b6+-) 49.Rc5 g5 (49...Rb2 50.f3+-) 50.h4 (50.Kg4 Rb2 51.Rf5 Ke7 52.Kg5 Kd6+-) 50...g4 (50...gh4 51.Kh4 Ke6+-) 51.Kg4 Kg6 (51...Rb2 52.Rf5 Kg6 53.h5 Kh6 54.g3+-) 52.Kf4 Kh7 (52...Kf6 53.h5+-) 53.g4 Kg8 54.h5 Rb2 55.Ke4 Rf2 56.g5 Rf7 (56...Rf8 57.h6+-) 57.Ke5 (better 57.Rc8 Kg7 58.b6 Re7 59.Kd4 Re6+-) 57...Rb7 58.Kf6 Rb5 (58...Rf7 59.Ke6 Rb7+-) 59.Rb5 (59.Rb5 Kh7 60.Rb7 Kg8 61.g6 Kh8 62.Rb8; 59.Rc8 Kh7 60.g6 Kh6 61.Rh8) 1-0. BeepBeepImAJeep (2570) - Paanoos (2335), lichess.org, 2016.

7.Nc3 d5 8.Nf3 d4 9.Nb1 Re8 10.Ne5= Bd6 (10...de3 11.fe3 Bd6 12.Nf3=) 11.Nf3 Bg4 (11...de3!? 12.de3 Ne4+=) 12.Bd4+/- c5 13.Bb2 Nbd7 14.Be2 Rc8 15.Nc3 Bf3 16.Bf3 b6 17.h3 Ne5 18.Be2 Nh5 (18...Bc7 19.Qc2+-) 19.0-0 Nf6 20.Rc1 Ng6 21.f4 Nh4 22.Qe1 Ne4 23.Ne4 Re4 24.Bd3 Re8 25.Qg3 g6 (25...Ng6 26.Bf5 Rc7 27.Rcd1+-) 26.Bb1 Bf8 (26...Be7 27.Qf2 Qd7 28.e4+-) 27.Rcd1 Bg7 (27...Rc7 28.Be5 Rd7 29.f5+-) 28.Bg7 Kg7 29.Qg5 (better 29.f5 Kh8 30.f6 Ng2 31.Qg2 Qd6+-) 29...Qg5 30.fg5 Rcd8 (30...Re5 31.Rf4 Nf5 32.Bf5 Rf5 33.Rdf1 Rf4 34.Rf4+- (34.ef4?! Rd8+/-)) 31.Rf4 (31.e4!? Re5 32.g3 Rg5+-) 31...Nf5 32.Bf5 gf5 33.Rf5 (33.Kf2 Kg6+-) 33...Re4 (33...Re3 34.Rf7! (34.de3?! Rd1 35.Kf2 Ra1+/-) 34...Kf7 35.Rf1 Kg7 36.de3+-) 34.Rf4 (34.Rd5 Rd5 35.cd5 Re5+-) 34...Rf4 35.ef4 Rd4 36.d3 Rf4 37.g3 Rf3 (37...Rd4 38.Kf2+-) 38.Kg2 Rf5 (38...Re3 39.Kf2 Re7 40.d4 cd4 41.Rd4+-) 39.h4 Re5 40.Kf3 Kg6 41.Kf4 (41.d4 cd4 42.Rd4 Re7+-) 41...Re7 (41...Re2 42.a5!+-) 42.Rf1 (42.d4 cd4 43.Rd4 Rc7+-) 42...Re2 43.Rf3 (43.a5 f6+-) 43...Ra2 44.Kg4 (44.Ke5 Kg7+-) 44...Ra4 (44...Kg7 45.Rf6+-) 45.Rf6 Kg7 46.h5 a6? (46...Ra3 47.Rd6 Kf8+-) 47.h6 (worse 47.Rb6 ab5 48.Rb5 Ra3+-) 47...Kf8 48.ba6 (better 48.g6!? Kg8 49.Rb6 hg6 50.Ra6 Rb4+-) 48...Ra6 49.Rd6 (better 49.g6!? hg6 50.h7 Kg7 51.Rf7 Kh8+-) 49...Ra3 (49...Ke7 50.Rc6 Kd7 51.Rf6+-) 50.Kf5 Rc3? (50...Ke7 51.Rb6 Rd3+-) 51.Kf6 (51.Rb6?! Rd3 52.g4 Ke7+-) 51...Rb3 (51...Ke8+-) 52.Rd8 1-0. BeepBeepImAJeep (2660) - loooti (2505), lichess.org, 2017.

7.Nc3 Bd7 8.Nf3 Qe8 (8...e4 9.Nd4=) 9.Be2= g6 (9...e4!? 10.Nd4 a6=) 10.0-0+= Kg7 11.d4 e4 12.Nd2 d5 13.Qb3 Be6 14.Rac1 Nbd7 15.Ba3 (15.cd5 cd5 16.f3 Rc8 17.fe4 de4+-) 15...Ba3 16.Qa3 h5 (16...Rc8 17.bc6 Rc6 18.cd5 Bd5 19.Nd5 Nd5 20.Qb3+-) 17.bc6 bc6 18.cd5 (18.Qd6 Nb6+/-) 18...cd5 19.Nb5 Rc8?? (better 19...Qd8+/-) 20.Nd6+- (20.Na7?! Ra8 21.Nb5 Qd8+-) 1-0. BeepBeepImAJeep (2635) - Wieczoorxd (2495), lichess.org, 2015.

7.Nf3 cb5 8.cb5 Nbd7 9.Be2 a6 10.d4 ab5 11.ab5 Ra1 12.Ba1 Qa5 13.Bc3 Qc7 14.de5 de5 15.0-0 e4 16.Nd4 Nc5 17.Bb2 Be6 18.Nd2 Rd8 19.Qa1 (19.Qc2=) 19...Nd3 (better 19...Ng4!? 20.g3 Bd7=) 20.Ne4+= Ne4 (20...Nb2!? 21.Nf6 Bf6 22.Qb2 Bd5+=) 21.Bd3+/- Nc5 22.Be2 (22.Ne6 fe6 23.Bc4+-) 22...Ne4 (22...Bd6!? 23.Ne6 Bh2 24.Kh1 Ne6+/-) 23.Rc1 (23.Ne6 fe6 24.Bg4 Qc4+-) 23...Bd6?? (better 23...Qd7+-) 24.Rc7 (24.Rc7 Bc7 25.Ne6 fe6 26.Bg7+-) 1-0. BeepBeepImAJeep (2515) - Vasco20 (2040), lichess.org, 2018.

7.Nf3 Qc7 8.Be2 Nbd7 (8...e4 9.Nd4=+) 9.0-0= Re8 10.Nc3 Bf8 (10...e4 11.Ng5 d5 12.cd5 cd5 13.Rc1=) 11.d4 Nb6 12.Rc1 ed4 13.Nd4 Bd7 (13...c5 14.Nf3+=) 14.a5+/- Nc8 15.a6 ba6 16.bc6 Be6 17.Qb3 (17.Nd5 Bd5 18.cd5 Nd5 19.Ba6 Nb4+-) 17...Nb6 The isolani on c4 becomes a target 18.Rfd1 Rab8 19.Qa2 Bc8 20.Nd5 (better 20.Rb1!?+/-) 20...Nfd5 21.cd5 Exerts pressure on the isolated pawn 21...g6? (better 21...Nd5 22.Rb1 Nb4+=) 22.Ba1 Bg7 (22...Bh6 23.Ba6 Ba6 24.Qa6 Nd5 25.Nb5 Rb5 26.Qb5 Ne3 27.fe3 Be3 28.Kh1 Bc1 29.Rc1+-) 23.Bf3 (23.Ba6 Ba6 24.Qa6 Bd4 25.Bd4 Nd5 26.Qa7 Rec8+-) 23...f5 24.g3 f4 (24...Be5!?+/-) 25.ef4+- Bh3 (25...Re7 26.Re1+-) 26.Ne6 (better 26.Qa6 Nc8 27.Re1 Re1 28.Re1+-) 26...Re6? (better 26...Be6 27.de6 Ba1 28.Ra1 Re7+-) 27.de6 d5 (27...Ba1 28.e7 Kg7 29.Qa1 Kf7 30.Qa3+-) 28.Bg7 Qf7 (28...Kg7 29.Bd5 Re8+-) 29.ef7 (29.ef7 Kg7 30.Qb2 d4 31.Re1+-) 1-0. BeepBeepImAJeep (2690) - mufiks (2390), lichess.org, 2019.

7.Nf3 e4 8.Nd4 d5 9.cd5 cd5 10.Nc3 Nbd7 11.Be2 Ne5 12.0-0 Bd7 13.f4 Nd3 14.Bd3+/- ed3 15.Qb1 Ne4 16.Qd3 Nc5 17.Qc2 Bf6 (17...Bg4!?+/-) 18.Nd5+- Rc8 (better 18...Bd4 19.Bd4 Ne6+-) 19.Nf6 Qf6 20.Nc6 Qd6 21.Be5 (better 21.Na7 Ra8 22.Ba3 b6+-) 21...Qh6 (21...Qe6 22.Na7 Nb3 23.Nc8 Na1 24.Ra1 Rc8 25.Qd3+-) 22.Ne7 (22.Na7 Be6 23.Nc8 Rc8+-) 22...Kh8 23.Nc8 Rc8 24.Rac1 f6 (24...Qe6 25.Qc4 Qc4 26.Rc4+-) 25.Bd4 (better 25.Bd6 b6 26.d4 a6+-) 25...b6 26.Bc5 bc5 27.Qd3 Bg4 28.Rc5! Rf8 (28...Rc5 29.Qd8 Mate attack) 29.Rd5 (29.h3 Bh5+-) 29...Qg6 (29...Rg8 30.h3 Be6 31.Rd6 Bh3 32.gh3 Qh3 33.e4 Qg4 34.Kh2 Qh5 35.Kg3 Qg6 36.Kf2+-) 30.Rd8 (30.Qg6 hg6 31.Rc1 Be6+-) 30...Qf7 31.Rc1 h5 (31...Qe7 32.Rf8 Qf8 33.f5+-) 32.Rc7! Qg8 (32...Qc7 33.Rf8 Mate attack) 33.Rf8 Qf8 34.Ra7 Qa3 (34...Qb8 35.b6 Bc8 36.Qd8 Kh7+-) 35.Qa3 (35.Qa3 Be6 36.Qf8 Kh7 37.Qg7; 35.Ra8 Bc8 36.Rc8 Qf8 37.Rf8) 1-0. BeepBeepImAJeep (2745) - ShMat (2640), lichess.org, 2020.

7.Nf3 e4 8.Nd4 d5 9.cd5 cd5 10.Be2 Nbd7 11.0-0 Ne5 12.Nc3 Bd7 13.f4 Nc4 14.Bc4 dc4 15.Qc2 Bc5 (better 15...Bb4=) 16.Ne4+/- Bd4 17.Bd4 (17.ed4?! Ne4 18.Qe4 a6+=) 17...Ne4 18.Qe4 Re8 19.Qb7 Rb8? (better 19...Bf5 20.Qf3 Bd3+-) 20.Qd5 (20.Qa7 Bf5+-) 20...Be6 (20...Bg4 21.Qd8 Rbd8 22.Ba7 Rd2 23.Bd4+-) 21.Qd8 Red8 22.Rfc1 (22.Ba7 Rb7 23.Bd4 Bf5+-) 22...Bd5? (22...Rb7 23.Rc3+-) 23.Rab1 (23.Ba7 Rb7 24.Bd4 f5+-) 23...Rbc8? (23...Rd7 24.a5+-) 24.a5 (24.Ba7 Ra8 25.b6 Rd7+-) 24...Rb8 (24...Ra8+-) 25.Ba7 Ra8 26.Bd4 Ra5 27.Bb6 Raa8 28.Bd8 Rd8 29.b6 Rb8 30.Rb5 Be4 31.Rb4 Bd3 32.Rbc4 (better 32.Ra1 h6+-) 32...Bc4 33.Rc4 Kf8 34.Rc6 Ke8 35.d4 (35.e4 Kd8+-) 35...Kd7 (35...f5 36.Kf2+-) 36.d5 (36.Rc7 Ke6 37.b7 h5+-) 36...g6 (36...f5 37.Kf2+-) 37.Kf2 h5 (37...f5 38.g4!+-) 38.e4 f6 (38...Kd8+-) 39.Rf6 Rb6 (39...Rg8+-) 40.Rb6 Kc7 41.Rg6 (41.Rg6 h4 42.Rg7 Kd8 43.e5 Kc8 44.d6 Kd8 45.e6 Kc8 46.Rc7 Kd8 47.f5 h3 48.gh3 Ke8 49.Rc8) 1-0. BeepBeepImAJeep (2620) - Sharaev (2020), lichess.org, 2016.

7.Nf3 Re8 8.Be2 Nbd7 9.0-0= e4 10.Nd4 d5 (10...c5!? 11.Nf5 Bf8=) 11.bc6+/- bc6 12.Nc6 Qc7 13.Ne7 Re7 14.cd5 Nd5 15.Nc3 Nc3 16.Bc3 a5 17.Rc1 Qb6 18.Rb1 Qe6 19.Qb3 (19.Rb5 Qc6+-) 19...Ba6 (19...Qb3 20.Rb3 Nc5 21.Ra3+/-) 20.Ba6 Ra6 21.Qe6 Rae6 22.Rb5 g6 (22...Ra6 23.f3+-) 23.Ba5 f5 24.Bc3 Kf7 (24...Rc6 25.f3+-) 25.a5 (25.Bb4 Re8 26.Rb7 Rd8+-) 25...Ne5 26.Be5 Re5 27.Re5 Re5 28.Ra1 Re7 29.Kf1 Ra7 30.Ke2 Ke6 31.a6 Kd6 32.d3 ed3 33.Kd3 Kc6 34.e4 (34.f3 h5+-) 34...Rd7 (34...fe4 35.Ke4 Kb6+-) 35.Ke3 Ra7 36.e5 (36.ef5 Kd5+-) 36...Kd5 37.f4 Ke6 (37...Kc5 38.h3+-) 38.h4 (38.Kd4 Kd7+-) 38...h6 (38...Kd5 39.Ra5 Kc6 40.Kd4+-) 39.g3 (39.Kd4 Kd7+-) 39...h5 (39...Kd5 40.Rd1 Kc5 41.Rd6+-) 40.Kd4 Kd7 41.Kc5 Kc7 42.Kd5 (42.e6!? Kb8+-) 42...Ra8 (42...Kd7 43.e6 Ke7 44.Kc5+-) 43.a7 Rd8 (43...Kd7 44.Ra6 Kc7 45.Rg6 Re8+-) 44.Ke6 Ra8 45.Kf6 Kc6 46.Kg6 Kd5 47.Kf5 Rf8 48.Kg5 Ra8 49.Kh5 Ke4 50.Kg5 Rg8 51.Kf6 Rf8 52.Ke7 Ra8 53.h5 Kf5 54.h6 (better 54.e6!? Kg4 55.Kd7 Kg3+-) 54...Kg6 55.e6 Kh6 56.Kf7 Kh7 57.e7 (57.Rh1) 57...Rf8 58.Kf8 (58.ef8N Kh6 59.Rh1) 58...Kg6 59.e8Q (59.g4 Kh7 60.e8Q Kh6 61.Qh5) 59...Kf5 60.Ra5 (60.a8Q Kg4 61.Qg6 Kh3 62.Qh1) 60...Kg4 61.Qg6 Kf3 62.Ra3 (62.a8Q Ke3 63.Qc2 Kd4 64.Qae4) 62...Kg2 63.g4 (63.g4 Kh2 64.Qc2 Kg1 65.Ra1; 63.a8Q Kf2 64.Qc2 Ke1 65.Qh1) 1-0. BeepBeepImAJeep (2635) - loooti (2525), lichess.org, 2017.

6.c4 Nbd7

7.Nc3 a6 8.Nf3 e4 9.Nd4 Nc5 10.Be2 ab5 11.ab5 Ra1 12.Qa1 Re8 13.0-0 Bf8 14.Qb1 Bd7 15.f4 (15.f3 ef3 16.Bf3 Ng4+=) 15...c6 16.Ba3 Qa5 17.Bc5 dc5 18.Nb3 (18.bc6 bc6 19.Nb3 Qd8=) 18...Qc7 19.Qc2 cb5 20.Nb5 Bb5 21.cb5 b6 (21...Nd5 22.Ra1=+) 22.Bc4 Rd8 23.Ra1 g6 24.Ra6 h5 25.h3 Kg7 26.Qc3 Be7 27.Qe5 (27.d3!? ed3 28.Bd3=) 27...Qe5=+ 28.fe5 Nd5 29.Bd5 Rd5 30.Rb6 c4 31.Na5 (better 31.Nd4 Bc5 32.Rc6 Re5 33.b6 Bd4 34.ed4+=) 31...Rd2?? (better 31...Bd8 32.Ra6 Ba5 33.Ra5 Re5=+) 32.Nc4+/- Rc2 33.Rc6 Bh4 (33...Bg5!?+/-) 34.Nd6 Rb2 35.Ne4 (better 35.Kh2 Bf2 36.Rc7+/- (36.Ne4?! Be3 37.e6 fe6=)) 35...Rb5= 36.e6 Re5 37.Nc5 (37.Rc4 Re6 38.g4 hg4 39.hg4 f5=) 37...Be7 (better 37...Bg5!? 38.Kf1 Be3-/+) 38.Nd3 Re3 39.Nf4 f5?? (better 39...Bh4 40.ef7 Kf7 41.Rc7 Re7 42.Re7 Be7=) 40.Nd5 (better 40.Rc7 Re4 41.Re7 Kf6 42.Rf7 Ke5+-) 40...Re1 41.Kf2 Bh4 42.g3 Rd1 (42...Re5 43.Rc7 (43.gh4 Rd5 44.Ke3 Re5 45.Kf4 Re1-/+) 43...Kf8 44.Rc8 (44.gh4?! Rd5 45.Rf7 Ke8=) 44...Kg7 45.gh4 Re6 46.Rc7 Kf8 47.Nf4+-) 43.Ne3 (better 43.e7 Kf7 44.Re6 (44.gh4?! Rd5 45.Re6 Ke8=) 44...Be7 45.Re7 Kf8 46.Rd7+-) 43...Rd2+/- 44.Ke1 Rd3 45.Ke2 (45.gh4? Re3 46.Kf2 Re4-+) 45...Rc3?? (better 45...Re3 46.Ke3 Bg3+/-) 46.Rc3+- (46.Rc3 Bg3 47.e7+-) 1-0. BeepBeepImAJeep (2730) - Wei_Wi (2435), lichess.org, 2020.

7.Nc3 Nb6 8.Nf3 a5 (8...Be6 9.d3=+) 9.d4= Bg4 (9...ed4 10.Qd4 c5 11.bc6 bc6 12.Bd3=) 10.Be2 (10.de5 de5 11.Qd8 Rfd8 12.Ne5 Be6=) 10...e4 (10...Bf3 11.gf3 Re8 12.Rg1=) 11.Nd2+= Bf5 (11...Be2 12.Qe2 d5 13.c5+=) 12.g4+/- Bg6 13.g5 (13.h4!? h6 14.g5 hg5 15.hg5+/-) 13...Nfd7= 14.Nce4 Bg5 15.Ng5 Qg5 16.Qb3 c5 17.d5 (better 17.Bf3!?+=) 17...Ne5=+ 18.Nf3 Nf3 19.Bf3 Qf5 20.Ke2 Qc2 21.Qc2 Bc2 22.Rhc1 Ba4 (22...Bb3 23.Kd3 Na4 24.Ra4 Ba4 25.Rc3=) 23.Kd3 (better 23.Ra3+/-) 23...Bb3=+ 24.Be2 a4 25.Kc3 f5 26.Bd3 g6 27.Rg1 Rfe8 28.h4 (28.Ra3 Kf7-/+) 28...Kf7 (28...Re4 29.Be4 fe4 30.h5 Nc4 31.hg6=+) 29.Rg3 Re5 (29...Re4 30.Be4 fe4 31.f3-/+) 30.Ba3 (30.h5 Re4 31.hg6 hg6=) 30...Rae8 31.Rag1 (31.h5 gh5 32.Rh1 Rg8=+) 31...Re4-+ 32.h5 Nc4 (32...Bc4?! 33.Be4 Re4 34.hg6 hg6 35.Rg6 Nd5 36.Kd2=) 33.hg6 hg6 34.Be4 Re4 (34...fe4 35.Bb2 Ne5 36.Ra1-+) 35.Bc1? (better 35.Bb2!? Ne5 36.Kd2-/+) 35...Ne5-+ 36.Rg6?? (36.f4 Ng4 37.Rh3 Bd5 38.Rh7 Ke6 39.Rg7-+) 36...Ng6 37.Rh1 Kf6 (37...Ne5 38.f4 Rc4 39.Kb2 Nd3 40.Kb1 Nc1 41.Rc1 Rc1 42.Kc1-+) 38.Rh7 (38.Bb2 Bd5 39.Kd2 Ke6-+) 38...Bd5 39.Rc7 (39.Ba3 f4 40.Kd2 fe3 41.fe3 Kg5-+) 39...Rc4 40.Kd2 Rb4 41.Bb2 (41.Rd7 Ke6 42.Rd8 Rb5 43.Re8 Ne7-+) 41...Ke6 (better 41...Rb2 42.Kc1 Rf2 43.e4-+) 42.Kc3 (42.Kc1 Rb5 43.Rc8 Rb4-+) 42...Rb5 43.Ba3 (43.Kc2-+) 43...Rb3 44.Kc2 Ra3 45.Rb7 Ra2 (better 45...Bb7 46.f3-+) 46.Rb2 Rb2 47.Kb2 Ke5 48.f3 Bf3 49.Kc3 Bd5 50.e4 Ke4 51.Kd2 a3 52.Ke1 (52.Kc2 f4 53.Kb1 a2 54.Kb2 f3 55.Ka1 f2 56.Kb2 f1Q 57.Kc2 Qe2 58.Kc3 a1Q) 52...a2 53.Kd1 (53.Ke2 a1Q 54.Kd2 Qb2 55.Kd1 Ke3 56.Ke1 Qe2) 53...a1Q (53...Kd3 54.Ke1 Ke3 55.Kd1 Bb3 56.Kc1 a1Q) 54.Kd2 (54.Kc2 c4 55.Kd2 Qb2 56.Kd1 Ke3 57.Ke1 Qe2) 54...Qd4 (54...Qb2 55.Kd1 Ke3 56.Ke1 Qe2) 55.Kc2 Bc4 56.Kb1 (56.Kc1 Kd3 57.Kb1 d5 58.Kc1 Qa1) 56...Qf2 (56...Qd1 57.Kb2 d5 58.Kc3 Qc1) 57.Kc1 Bd3 58.Kd1 Qe2 59.Kc1 Qc2 0-1. BeepBeepImAJeep (2570) - geordie (2345), lichess.org, 2018.

7.Nc3 Nc5 8.Nf3 e4 9.Nd4 Nd3 (better 9...Re8!?=+) 10.Bd3+= ed3 11.0-0 (11.Qb1 Nd7 12.Qd3 Ne5+=) 11...d5 12.cd5 Nd5 13.Nd5 (13.Qb3 Nb4+=) 13...Qd5= 14.Qb3 (14.Qc1!?=) 14...Qb3=+ 15.Nb3 Be6 16.Na5 Bd5 (16...Bb4 17.Bc3 Bc3 18.dc3=) 17.f3 (17.Ba3 Rfe8 18.Be7 Re7=) 17...b6 (17...Bb4 18.Bc3 Bc3 19.dc3=) 18.Nc6= Bc6 19.bc6 Rfd8 20.Rac1 Bc5 21.Rfd1 (21.Rc3 a5=) 21...Rd6=+ 22.Rc3 Rad8 23.a5 (23.Rc4 f6=+) 23...Rc6 24.ab6 (24.Rdc1 f5-/+) 24...ab6 (24...cb6 25.Kf2-/+) 25.Rdc1-/+ Rcd6 26.Ba3 Ba3 27.Ra3 R6d7 (27...c5 28.Kf2-/+) 28.Ra7 (28.Rc6=+) 28...Rc8 (better 28...c5!? 29.Ra6 Rd6-/+) 29.Rb7 Kf8 30.Kf2 Ke7 31.Rb6 cb6 32.Rc8 Rb7 (32...f5 33.e4+=) 33.Rc3 Rd7 34.Rb3 Rd6 35.e4 Kd7 36.Ke3 Kc6 (36...Rh6 37.Rd3 Kc6 38.h3+/-) 37.f4 (37.Rc3 Kb5+-) 37...Kc5 (37...Rh6!? 38.h3 Rg6 39.Rc3 Kb7+/-) 38.Rd3+- Rg6 39.g3 b5 40.Rd7 Rf6? (40...f6 41.Rd5 Kb4 42.Rh5+-) 41.Rc7 (41.e5 Rh6 42.Rf7 Rh2 43.d4 Kc6 44.Rg7 b4+-) 41...Kb4? (41...Kb6 42.Re7+-) 42.d4 (42.e5 Rh6 43.Rf7 Kc5+-) 42...Ka3 (42...Ra6 43.d5 g6+-) 43.e5 Rh6 44.Ra7 Kb3 45.Rf7 Rh2 46.Rg7 b4 47.e6 Rh1 (47...Ra2 48.f5 Ra1 49.e7+-) 48.f5 Kc3 (48...Kc4 49.Rc7 Kd5+-) 49.Rc7 Kb2 50.f6 (better 50.e7 Re1 51.Kd3 b3+-) 50...b3 (50...Re1 51.Kf4 Re6+-) 51.e7 Ka1 (51...Rf1 52.Ke2 Rf6+-) 52.Ra7 Kb1 53.f7 Rf1 54.f8Q Re1 55.Kd3 Rd1 (55...Rc1 56.e8Q Rd1 57.Kc3 Rc1 58.Kb3 Rd1 59.Qf5 Rd3 60.Qd3 Kc1 61.Qc6) 56.Kc3 Rc1 57.Kb3 h5 (57...Rc6 58.Qf1 Rc1 59.Qf5 Rc2 60.Qc2) 58.Qf5 Rc2 59.Qc2 1-0. BeepBeepImAJeep (2550) - shadrack (2265), lichess.org, 2018.

7.Nc3 d5 8.Nf3 (8.Nd5 Nd5 9.cd5 e4=) 8...d4 (8...dc4 9.Qc2=+) 9.ed4= ed4 10.Nd4 Bc5 (10...Re8!? 11.Be2 Ne5=+) 11.Nf3 Re8 12.Be2 Ne5 13.0-0 Ng6 (13...Nd3!? 14.Qc2 Nb2 15.Qb2 Bf5+=) 14.d4+/- Bb4 15.Rc1 Nf4 16.Bd3 Bg4 17.h3 Bh5 18.Bb1 (18.d5 c6=) 18...Qd7 (better 18...Bc3 19.Rc3 Ne2 20.Kh1 Nc3 21.Bc3 a6-/+) 19.Ne5? (19.Rc2=) 19...Qe7?? (better 19...Re5 20.de5 Bd1 21.Rfd1 Qe6 22.ef6 Bc3 23.Bc3 Ne2 24.Kh1 Nc1 25.Rc1 Qc4 26.fg7 Qa4-+) 20.Qd2 (20.f3+/-) 20...g5?? (better 20...Ne2! 21.Kh1 Rad8=+) 21.Rfe1+- Rad8 (better 21...Qd6+-) 22.Nf3?? (better 22.Nc6 bc6 23.Re7 Re7 24.Re1 Rd4 25.Qd4 Re1 26.Kh2+/-) 22...Qd6+= 23.Ng5 (better 23.c5 Qf8 24.Ng5 Ne2 25.Re2 Re2 26.Qf4 Rb2 27.Qf6 Rb1 28.Nb1+-) 23...Re1? (better 23...Ne2! 24.Kh1 h6+=) 24.Re1+- Qd4 25.Qd4 Rd4 26.Rc1?? (better 26.Nce4!? Ne4 27.Be4 (worse 27.Bd4 Ng5 28.Re8 Bf8 29.Ba7 Nge6+/-) 27...Rc4 28.Bh7 Kf8 29.Re4 Re4 30.Be4+- (30.Ne4?! Bd1+=)) 26...Rc4 (26...Bc3 27.Bc3 Rc4 28.Kh2-/+) 27.Kf1 (better 27.Kh2 Bc3 28.Rc3 (worse 28.Bc3 h6-/+) 28...Rc3 29.Bc3+=) 27...Rc3?? (better 27...Bc3 28.g4 A) 28...Ra4? A1) 29.Rc3? Rb4 30.Nh7 N6d5-+ (30...Rb2?! 31.Nf6 Kf8 32.Be4=+); A2) 29.Bc3 N6d5 30.gh5+- (30.Bh7 Kf8 31.Be5 Bg6=); B) 28...h6 29.gh5 hg5 (29...N4h5 30.Nf3 Nd5 31.Ba2 Ra4 32.Bd5 Bb2 33.Rc7 Ra1 34.Ne1=+; 29...N6h5 30.Nf3 Nd5 31.Ba2 Ra4 32.Bd5 Bb2 33.Rc7 Ra1 34.Ne1=+) 30.Bc3 N6h5=+) 28.Bc3+- (28.Rc3?! Be2 29.Kg1 Bc3 30.Bc3 N4d5+=) 28...Ne2 29.Bb4 Nc1 30.Bc3 Nd5 31.Be5 (31.Bh7 Kf8 32.Bd4 a6+-) 31...f6? (better 31...Be2 32.Ke1 Bd3=) 32.Ba2?? (32.Bh7 Kh8 33.Be4 fe5 34.Bd5 Bd1+-) 32...fe5 (better 32...Na2 33.g4 Be8 34.Bf6 Nf6-+) 33.Bd5+- Kg7 34.Ne6 (34.Bb7 Bd1+-) 34...Kf6+/- 35.Nc7 Nd3 (35...b6!?+/-) 36.Bb7+- Nc5 37.g4 (37.b6 ab6 38.Bc6 Bg6 39.Nd5 Ke6 40.Nb6 Kd6+-) 37...Nb7 (37...Bg4 38.hg4 Nb7 39.Ke2+/-) 38.gh5+- Nc5 (38...Kg5 39.Nd5+-) 39.Nd5 (39.a5 e4+-) 39...Ke6 40.Nc7?? (better 40.Nc3+-) 40...Kd6 41.Ne8 Ke7 42.Ng7 (42.Nc7!? Kd6 43.Ne8 Ke7 44.Nc7 Kd6=) 42...Na4-/+ 43.Nf5 Kf6 44.b6 (better 44.Ng3 Nc3 45.b6 ab6 46.Ke1-/+) 44...Nc3?? (better 44...ab6 45.Ng3 Nc5-+) 45.ba7+- Kf5 46.a8Q Kf4 47.Qc8 Kg5 48.Qg4 (48.Qg4 Kf6 49.Qf3 Kg5 50.Qc3+-) 1-0. BeepBeepImAJeep (2640) - Wieczoorxd (2495), lichess.org, 2015.

7.Nc3 e4 8.Nge2 Nc5 9.Ng3 Re8 10.Qc2 e4 becomes the focus of attention 10...Bf8 (10...d5 11.cd5 Nd5 12.Nd5 (worse 12.Nge4 Nb4 13.Qb1 Bf5-/+) 12...Qd5 13.Bc4 Nd3 14.Kf1=) 11.Be2 a5 (11...d5 12.0-0 dc4 13.Bc4=) 12.0-0+= b6 (12...c6!?+=) 13.f3+/- Bb7 14.fe4 Nfe4 15.Nge4 Be4 (15...Ne4!? 16.Bf3 Qe7+/-) 16.Ne4+- Re4 (16...Ne4 17.Bh5 Nf6 18.Bf6 gf6 19.Bf3+-) 17.Bf3 (17.d4 Qg5 18.dc5 Qe3 19.Rf2 d5 20.cb6 Bc5+-) 17...Qe7? (17...Re7 18.d4 Nd7 19.Ba8 Qa8 20.Rae1+-) 18.d3 (18.d4 d5 19.dc5 Qc5+-) 18...Nd3? (better 18...Re3 19.Bd5 Re8 20.Bf7 Qf7 21.Rf7 Kf7 22.Rf1 Kg8+-) 19.Qd3 Re3 20.Qd4 Re8 21.Bc6 Rd8 (21...Re2 22.Be8 Qe8 23.Rf2+-) 22.Bd5 (22.Bd5 Re5 23.Qg4 Rd5 24.cd5+-) 1-0. BeepBeepImAJeep (2670) - smurf42 (2660), lichess.org, 2016.

7.Nc3 Re8 8.Nf3 Nf8 (8...e4 9.Nd4=) 9.Be2 Ng6 10.d4 e4 (10...c5 11.dc5 dc5 12.Qc2=) 11.Nd2+= Bf5 (11...d5 12.cd5 Bb4 13.Qb3 Bc3 14.Bc3 Nd5 15.Bc4=) 12.Qc2 e4 seems the pivot of the position (12.g4 Bc8+=) 12...h5 (12...d5 13.Nd5 Nd5 14.cd5+=) 13.Rc1 (13.a5 a6+/-) 13...Bf8+= 14.Nd5 c6 15.Nf6 Qf6 16.d5 (16.Bh5 Qg5 17.Bg6 Qg6+=) 16...Qg5= 17.g3 cd5 18.h4 Qh6 19.cd5 Rac8 20.Qb1 Rc1 21.Qc1 Ne5 22.Be5 (22.Qc7 Rc8 23.Qb7 Rc2 24.Be5 Rc1 25.Bd1 de5=) 22...Re5 (22...de5 23.Qb2=+) 23.Bc4 (23.Qc7 Re7 24.Qb8 Qf6=) 23...Bg4 24.Qc2 Qg6 25.Bb3 Bf5 26.Qc7 Qf6 27.Qb7 Bg6?? (better 27...Re7 28.Qc6 Qa1 29.Bd1 Bg4=+) 28.Qc6 (better 28.Qa7 Re8 29.0-0+-) 28...Re7+/- 29.Qc2 (29.0-0 Qb2 30.Bc2 Qa2+/-) 29...Qa1+= 30.Qd1 Qe5 31.Nc4 (better 31.0-0!?+/-) 31...Qc3= 32.Nd2 Rc7 (32...Qe5 33.0-0+/-) 33.0-0+= Be7 34.Nb1 Qc5 35.Qd4 (35.Qe2 Qb4 36.Qa2 Bf5+=) 35...Qd4 36.ed4 f5 37.Nd2 f4 38.Nc4 e3 (38...Bf7 39.a5 Rb7 40.b6 ab6 41.ab6 fg3 42.fg3=) 39.fe3 fg3 40.Kg2 (40.a5 Bd3 41.Rc1 Bh4+=) 40...Bh4 41.Rf4 (better 41.Nd6!? Rc3 42.Bd1+=) 41...Bg5=+ 42.Rf1? (42.Rf3 Be4 43.Kg3 A) worse 43...Bd5 44.Rf5 h4 45.Kg4 Bc4 46.Bc4 Rc4 47.Rg5+= (worse 47.Kg5 h3=+); B) 43...Kh7=+) 42...h4 (better 42...Bd3 43.Rc1 Be3-+) 43.Nd2?? (better 43.Nd6 Be3 44.Nf5=+) 43...Be3-+ 44.Nf3 Be4 45.Kh3 (45.Bd1 Bd5 46.Re1 Rc3-+) 45...Rf7 46.Re1 (46.Bd1-+) 46...Rf3 47.Kh4 (47.Bd1 Rf2 48.b6 ab6 49.Re3-+) 47...g2 48.Kg4 (48.Bc2 Bf2 49.Kg5 Be1 50.Kh5 g1Q 51.Be4 Rh3) 48...g1Q (48...Rf1 49.Re3 g1Q 50.Rg3 Bf5 51.Kh4 Qh2 52.Rh3 Qh3 53.Kg5 Qg4) 49.Rg1-+ Bg1 50.Bc2 Bc2 51.Kf3 Ba4 52.Ke4 Bb5 53.Kf5 Ba6 54.Ke4 Bb7 55.Kd3 Bd5 56.Kc3 Bd4! 57.Kd4 a6 (57...Be6!? 58.Kd3 g5 59.Kd4-+) 58.Kd3 ½-½. BeepBeepImAJeep (2535) - Kingscrusher_YouTube (2315), lichess.org, 2015.

7.d4 ed4 8.ed4 Re8 9.Be2 d5 10.c5 Ne4 11.Nf3 Ndf6 (11...Bf6 12.Qc2=+) 12.0-0 Bg4 13.Nbd2 b6 14.Ne5 (14.c6!?=) 14...Be2=+ 15.Qe2 bc5 16.Nc6 Qd6 (16...Qd7!?=+) 17.Ne4 Ne4 18.f3 Nf6 19.dc5 (19.Ba3 a6=) 19...Qc5 (better 19...Qc6! 20.bc6 Bc5 21.Qf2 Bf2 22.Kf2 Re6=+) 20.Bd4= Qc4 (better 20...Qd6!?=) 21.Ne7 (21.Ne7 Re7 22.Qe7 Qd4 23.Kh1+/-) 1-0. BeepBeepImAJeep (2545) - smurf42 (2675), lichess.org, 2016.

7.Be2 a6 8.d4=+.

7.Be2 b6 8.d3 Bb7 9.Nf3 c6 10.0-0 cb5 (10...a6 11.Nc3=) 11.ab5+= Nc5 12.Nc3 Rc8 (12...a5 13.ba6 Ra6 14.Ra6 Ba6 15.Re1+=) 13.Rc1 (better 13.Ra7!? Rc7 14.Ra2+/-) 13...a5 14.ba6 Ba6 15.Ra1 Bb7 16.d4 ed4 17.ed4 (worse 17.Qd4 Nb3 18.Qd3 Na1 19.Ra1 Re8-/+; 17.Nd4?! Re8+=) 17...Nce4 18.Ne4 Ne4 (18...Be4 19.Ng5+=) 19.Rc1 (19.Ra7!? Qc7 20.d5+=) 19...d5= 20.Qd3 Bf6 (better 20...Re8=) 21.c5 (better 21.Qb3!?=) 21...bc5-/+ 22.Ne5 (22.Qb3 Re8 23.Rfe1 Qd7 24.dc5 Nc5-/+) 22...Be5 (22...Re8 23.Bg4 Ra8 24.Rfe1-+) 23.de5-/+ c4 24.Qh3 c3 (24...Qb6 25.Ba3 Rfe8 26.Bg4-/+) 25.Ba1?? (better 25.Bc3!? Nc3 26.Rc3 Rc3 27.Qc3=) 25...Re8 (better 25...d4-+) 26.f3? (better 26.Bc3 Nc3 27.Rc3 Re5 28.Re3 Re3 29.fe3-/+) 26...Qb6-+ 27.Kh1 Nf2 28.Rf2 Qf2 29.Bc3 (29.Bd3 Re5 30.Qh7 Kf8 31.h3 Re1 32.Re1 Qe1 33.Kh2 Qe5 34.Kh1-+) 29...Qe2 (29...Rc3 30.Rg1 Qe2 31.Qd7-+) 30.Qg3 (30.Qd7 Qe3 31.Rc2 Red8-+) 30...Rc3! 31.Rg1 (31.Rc3 Qf1 Mate attack) 31...Rc2 (31...Qe5 32.Qe5 Re5 33.h4-+) 32.h4 d4 (32...Qe5 33.Qe5 Re5 34.Rb1-+) 33.h5 (33.h5 Re5 34.Qh3-+). CronusCR (2215) - JosueNatanaelC (2160), Rated Bullet game, lichess.org, 2017.

7.Nf3 a6 8.Nc3 ab5 9.ab5 Ra1 10.Qa1 e4 11.Nd4 Nc5 12.Be2 b6 13.Nc6+= Qd7 14.Nd5 (14.Ne7?! Qe7 15.0-0 Bb7=) 14...Nd5 15.cd5 Nb3 16.Qb1 Nc5 17.0-0 (worse 17.Ne7 Qe7 18.d4 Nd3 19.Bd3 ed3 20.Qd3 Bb7=) 17...f5 18.f3 Bf6 19.Bf6 Rf6 20.fe4 fe4 21.Rf6 gf6 22.Qa1 (22.d4 ed3 23.Bd3 Nd3 24.Qd3 Bb7+/-) 22...Kg7+= 23.Nd4 Bb7 24.Bc4 Qg4 25.h3 Qc8 26.Qf1 Kf7 27.Qf4 (27.Nf5 Qf8+=) 27...Qg8= 28.Qh4 Qg6 29.Kh2 Bc8 30.Qe1 Bd7 31.Qa1 Qg8 32.Ne2 Qc8 33.Nf4 Qg8 34.Qa7 Qc8 35.Kg3 (35.d4 ed3 36.Nd3 Ne4+=) 35...Qg8 36.Kf2 Qc8 37.Ke2 Qb7 38.Qa1 Qc8 39.Kd1 Qg8 40.Kc2 (40.Qc3 Qe8 41.Be2 Ke7=) 40...Qc8 (40...h6 41.Qa7=) 41.Nh5+= The backward pawn on f6 becomes a target 41...Qg8?? (better 41...Qd8+=) 42.Qf6+- Ke8 43.Ng7 (43.Ng7 Qg7 44.Qg7+-) 1-0. BeepBeepImAJeep - Visca_el_Barca (2530), lichess.org, 2018.

7.Nf3 Re8 8.Be2 Bf8 9.d4 e4 10.Nfd2 c6 11.Nc3 d5 12.Qb3 Nb6 (12...Qa5 13.cd5 cd5 14.g4+= (worse 14.Nd5 Nd5 15.Qd5 Bb4=)) 13.bc6 (13.c5 Nbd7+=) 13...bc6= 14.cd5 cd5 (14...Nbd5 15.0-0=) 15.Ba3 (15.a5 Nbd7 16.Nd5 Rb8 17.Nf6 Qf6+=) 15...Ba3= 16.Qa3 Be6 17.a5 Nbd7 18.a6 Nf8 19.Na4 (19.0-0 Rc8+=) 19...Ng6 20.Nc5 Nh4 21.g3 Ng6 22.h4 h5 23.Rb1 Bg4 24.Bf1 (24.Nb7 Qd7 25.Bb5 Qe7 26.Qe7 Re7+=) 24...Bf3 (24...Re7!?=) 25.Nf3+= ef3 26.Bd3 Ng4 27.Bg6 fg6 28.Rb7 Qf6 (28...Qd6 29.Rh3+=) 29.0-0+/- Nh6 (29...g5 30.Qb3 Rad8 31.hg5 Qg5 32.e4+/- (32.Ra7 h4-/+)) 30.Qb3+- Rad8 31.Rd7 (better 31.Ra7!? g5 32.Rd7 Rd7 33.Nd7 Qa6 34.Qd5 Qe6 35.Qe6 Re6 36.hg5+-) 31...Qf5+/- 32.Qb7?? (32.Rd8 Rd8 33.e4 Qh3 34.Qf3 Ng4+/-) 32...Rd7 (better 32...Qh3 33.Qd5 Kh8 34.Qf3 Rd7 35.Nd7 Qd7=+) 33.Qd7+= (33.Nd7? Kh8 34.Kh2 Ng4 35.Kg1 Nf6-+) 33...Qd7 34.Nd7 Re6 35.Nc5 (better 35.Ne5+=) 35...Rc6?? (better 35...Rb6=) 36.Rb1+- Ng4 (36...Rc8 37.Rb7 Ra8 38.Ne6+-) 37.Rb8 Kh7 38.Rb7 Nf6 39.Ra7 Ne4 40.Rb7 (40.Re7 Nc5 41.a7=) 40...Nc5+= 41.dc5 Rc5? (better 41...Ra6!? 42.Rf7 Ra1 43.Kh2 Rc1+=) 42.a7+- Ra5 43.Kh2 Kh6?? (43...g5 44.hg5 Ra1 45.Rc7+-) 44.g4! hg4 (44...g5 45.hg5 Kg5 46.gh5 (46.Rg7?! Kf6 47.Rg8 Ra7+/-) 46...Kh5 47.Kg3+- (47.Rg7?! Kh4+-)) 45.Kg3 (better 45.Rb8 g5 46.Rh8 Kg6 47.h5 Kf5+-) 45...Kh5?? (45...g5 46.hg5 (46.Kg4?! Ra4 47.Kf3 gh4+/-) 46...Kg5 47.e4+- (47.Rg7?! Kf5+/-)) 46.Rd7 (better 46.Rb8 g5 47.Rh8 Kg6 48.h5 Kf5 49.Rf8 Ke4 50.a8Q Ra8 51.Ra8+-) 46...d4?? (46...g5 47.Rd5! Ra7 48.Rg5 Kh6 49.Rg4 Rf7+-) 47.ed4 (better 47.Rd5! Rd5 48.a8Q+-) 47...Ra4 (47...g5 48.hg5 g6 49.Rh7 Kg5 50.d5+-) 48.Rd5 (48.Rd8 g5 49.Rh8 Kg6 50.h5 Kf5+-) 48...Kh6 (48...g5 49.Rg5 Kh6 50.Rg4 (50.Kg4?! Rd4 51.Kf3 Ra4+/-) 50...Ra7 51.Kf3+-) 49.Kg4 (better 49.Rd8 g5 50.a8Q Ra8 51.Ra8 gh4 52.Kh4 Kg6 53.Kg4 Kf7+-) 49...Ra6?? (49...Ra7 50.Rd8 Kh7+-) 50.Rd8 Kh7 (50...g5 51.a8Q Ra8 52.Ra8 Kg6 53.h5 Kf6+-) 51.a8Q g5 (51...Ra8 52.Ra8 g5 53.d5 Kh6 54.hg5 Kg6 55.Ra7 Kh7 56.Kf5 Kg8 57.g6 Kf8 58.Ke6 Ke8 59.Ra8) 52.Rh8 Kg6 53.h5 (53.Qe8 Kf6 54.hg5) 53...Kf7 (53...Kf6 54.Qd8 Kf7 55.Qd7 Kf6 56.Rf8) 54.Qf8 (54.Qe8 Kf6 55.Rf8) 54...Ke6 55.Qe8 (55.Qf5 Ke7 56.Qc8 Ra7 57.Re8 Kd6 58.Qe6 Kc7 59.Rc8 Kb7 60.Qc6) 55...Kd5 (55...Kd6 56.Qe5 Kc6 57.Rc8 Kb6 58.Qc5 Kb7 59.Qc7) 56.Qe5 (56.Qb5 Kd4 57.Rd8 Rd6 58.Rd6 Kc3 59.Qc5 Kb3 60.Rb6 Ka4 61.Qb4) 56...Kc4 57.Rc8 Kd3 (57...Kb4 58.Qc5 Ka4 59.Rb8 Rb6 60.Qb6 Ka3 61.Ra8) 58.Qe3 1-0. BeepBeepImAJeep (2745) - lamorocha (2480), lichess.org, 2015.

6.c4 Bf5

7.Nc3 Nbd7 8.Nf3 a5 9.Be2= Bg6 (9...Nb6 10.0-0=) 10.0-0 b6 (10...Bf5 11.d4=) 11.d4 ed4 12.Nd4 Re8 13.Bf3 Nf8? (better 13...Ne5!?+/-) 14.Nc6+- Qd7 15.Bd5 (better 15.Ne7 Qe7 16.Ba8 Ra8 17.Nd5 Nd5 18.cd5+-) 15...Nd5+= 16.Nd5 Bf6?? (better 16...Bd8+=) 17.Bf6+- gf6 (17...Kh8 18.Bd4 Be4+-) 18.Nf6 (18.Nf6 Kh8 19.Qd4+-) 1-0. BeepBeepImAJeep (2600) - arusek (2350), lichess.org, 2016.

7.Nc3 Nbd7 8.Nf3 Re8 9.Be2 Ne4 10.0-0 Bf6 11.d4 ed4 12.Nd4 Bg6 13.Nd5 Be5 14.a5 Ndf6 15.a6 Nd5 16.cd5 ba6 17.Ra6 Nc5 18.Nc6 Qh4 19.Ne5 de5 20.Rc6 Ne4 21.Rc7 Rad8 (21...Qd8 22.Rc6+-) 22.Ra7 h5 (22...Qg5 23.Bc4+-) 23.Bf3 (better 23.f4!? ef4 24.Rf4 Qg5+-) 23...Ng5 24.g3 (24.Ba3 Nf3 25.Qf3 e4+-) 24...Nf3+/- 25.Qf3 Qh3? (better 25...Qb4 26.Ba3 Qb5+/-) 26.e4+- h4 27.Rc1 Rb8 28.Rcc7 (28.Rc5 Rec8 29.Rc8 Qc8 30.Be5 Rb5+/-) 28...Rf8? (better 28...hg3 29.Qg3 Qg3 30.fg3 Rb5+/-) 29.Qe2 Rb6 (29...hg3 30.fg3 Rfe8 31.Ba3+-) 30.Ba3 (better 30.Be5!? Re8 31.Re7 Re7 32.Re7 hg3 33.hg3 Qc8+-) 30...Rfb8 31.Qf1 (31.Ra5 hg3 32.fg3 Bh5+-) 31...Qg4 32.f3 Qg5 33.Qc1 Qf6 (33...Qd8 34.Ra5+-) 34.Rc8 (better 34.Qe3 hg3 35.Be7 gh2 36.Kh1 Qf4 37.Qf4 ef4+-) 34...Rc8? (better 34...Kh7 35.Rb8 Rb8+-) 35.Qc8 Kh7 36.Qg4 (better 36.Ra8 Be4 37.fe4+-) 36...hg3?? (36...Rb5 37.Kg2 Rb8 38.Be7+-) 37.hg3 (37.Qh3 Bh5 38.Qh5 Qh6 39.Qh6 gh6+- (39...Kh6?? 40.Ra6 gh2 41.Kh2+-)) 37...Rb5 (37...Rb8 38.Ra6 Qd8 39.Bd6 Rb5 40.Be5+-) 38.Qh4 (better 38.Qh3 Bh5 39.Qh5 Qh6 40.Qf5 Qg6 41.Rf7 Qf5 42.Rf5+-) 38...Qh4+/- 39.gh4 Bh5 40.Kg2?? (40.d6 Bf3 41.d7 Rb8+-) 40...f6?? (better 40...Rb3!? 41.d6 Rd3+=) 41.Bf8 (41.d6 Rb3 42.d7 Rd3+-) 41...Rb3? (better 41...Rb8 42.Be7 Kg6+-) 42.Rg7 Kh8 43.Rg3 f5 (43...Rb2 44.Kf1 Rb1 45.Kf2 Rb2 46.Ke1+-) 44.Bg7 Kh7 (44...Kg8 45.Be5 Kf8 46.Bc7+-) 45.Be5 fe4 46.fe4 Rb4 47.Rg7 Kh8 (47...Kh6 48.Re7 Kg6+-) 48.Rg5 (better 48.Rb7! Kg8 49.Rb4 Kf8+-) 48...Kh7 49.Rh5 Kg6 50.Rg5 Kf7 51.Kf3 Ke7 52.Kf4 Rd4 (52...Rb6+-) 53.Rg7 Ke8 54.Bd4 Kf8 (54...Kd8 55.h5 Ke8 56.h6 Kf8 57.h7 Ke8 58.h8Q) 55.Bf6 (55.d6 Ke8 56.d7 Kd8 57.Bb6) 55...Ke8 56.Ke5 (56.e5 Kf8 57.e6 Ke8 58.Rg8) 56...Kf8 57.Ke6 Ke8 58.Rg8 1-0. BeepBeepImAJeep (2610) - smurf42 (2470), lichess.org, 2015.

7.Nc3 Nbd7 8.Nf3 Bg6 9.Be2 Re8 10.d4 Bf8 11.0-0 ed4 12.Nd4 Ne4 13.Rc1 Ndf6 14.Bf3 (14.Nd5 a6+=) 14...Rb8 (14...a6 15.Nd5=) 15.a5 Nc5 16.a6 ba6 (16...Nd3 17.Rc2 Ne5 18.Bb7 Bc2 19.Qc2 Qe7+/-) 17.Nc6+/- Qd7 18.Nb8 Rb8 19.Bc6 Qf5 20.Nd5 (better 20.Ba3+/-) 20...ab5?? (better 20...Nd5 21.cd5 ab5=) 21.Nf6 (21.Bf6!? gf6 22.cb5 Qe5+-) 21...gf6 22.cb5 Qg5 (22...Rb6 23.Bc3+-) 23.Rc4 (23.Bd4 Bh5 24.Qc2 a5+-) 23...Bg7 24.Rg4 (24.Ba3 Ne6+-) 24...Qh6 (24...Qh5 25.Bd4+-) 25.Rg3 (25.Qa1 a6 26.ba6 Na6 27.Qa6 Rb2 28.Qc8 Bf8 29.Qc7 Qh5+-) 25...f5? (25...Bd3 26.Qa1 Bf1 27.Bf6+- (worse 27.Qf1 Kh8+/-)) 26.Bg7 (26.Rh3 Qh3 27.gh3 Bb2+-) 26...Qg7 27.Qd5 (27.h4 h5 28.Qa1 Qa1 29.Ra1 Ne4+-) 27...Qf6 (27...a6 28.ba6 Na6 29.Rd1+-) 28.h3 (28.Qa2 f4 29.Qa7 Rd8 30.ef4 Ne6+-) 28...Kg7 (better 28...a6 29.ba6 Na6+-) 29.Rd1?? (29.Qa2 Rb6 30.Qa7 Ne6+-) 29...h5? (better 29...Ne4!?+/-) 30.Qd4 (30.Qa2 h4 31.Rf3 Bh5+-) 30...Qd4 (better 30...a6 31.ba6 Qd4 32.ed4 Na6+-) 31.Rd4?? (better 31.ed4 Ne6 32.Ra3+-) 31...Kf6 32.Rf3 Ke5 (32...Rb6 33.g4=) 33.g4 (33.Rd5 Ke6+/-) 33...hg4 34.hg4 Rg8 (34...fg4 35.Rg4 a5 36.ba6 Na6 37.Bd7+/-) 35.Rg3 Bh7 (35...fg4!? 36.Rgg4 a5+/-) 36.f4 Ke6 37.gf5 Kf5 38.Rg8 Bg8 39.Kf2 f6 40.Kg3 Bb3 41.e4 Ke6 (41...Kg6 42.Kf3+/-) 42.Bd5+- Bd5 43.ed5 Kf5 44.Kf3 Kg6 (44...a5 45.ba6! Na6 46.Ke3+-) 45.Rc4 Kf5 46.Rc1 Ne4?? (46...a5 47.ba6! Na6 48.Ke3+-) 47.Ra1 (better 47.Rc7!? Nd2 48.Ke3 Nb1+-) 47...Nd2? (47...Nc3 48.Ra5+/-) 48.Kg2?? (48.Ke3 Ne4 49.Kd4 Ng3 50.Ra7 Ne2 51.Kc4 Nf4 52.Rc7 Ke4 53.Re7 Kf3+-) 48...Ne4? (better 48...Nc4!?+/-) 49.Ra7+- Kf4?? (49...Nc3 50.Rc7 Nb5+-) 50.Rc7 1-0. BeepBeepImAJeep (2590) - imstar (2165), lichess.org, 2017.

7.Nf3 Bg6 8.Be2 Nbd7 9.0-0 e4 10.Nd4 Ne5 11.Nc3 (11.f4 ef3 12.Nf3 Nd3=) 11...c5 12.bc6 bc6 13.f4 ef3 14.Nf3 Nd3 15.Ba3 c5 (15...Nd7!?=) 16.Nh4+= Ne5 17.Ng6 hg6 (17...Ng6 18.Rb1+=) 18.d4+/- Ned7 19.d5 Rb8 20.Rb1 a6 21.Qd2 Qa5 22.Rfc1 Nb6 Attacks the isolani on a4 23.Qc2 Nbd7 (23...Nfd7 24.Rb3=) 24.h3 Ne5 25.Bb2 Nfd7 26.Ba1 (26.Ne4 f5 27.Bc3 Qc7+=) 26...Bg5= 27.Nd1 (27.Kf2 f5=) 27...Rb1 28.Rb1 f5 (better 28...Qe1!? 29.Bf1 Be3 30.Ne3 Qe3 31.Qf2 Qe4=+) 29.Bc3+= Qc7 30.Qb2 Qd8 31.Qb7 Qf6 (31...Qa8!?+/-) 32.Qa6+- f4 33.ef4 Bf4 34.Be1 (34.Rb7 Qh4 35.Qd6 Qg3 36.Rd7 Qh2 37.Kf1 Qh1 38.Kf2 Nd3 39.Bd3 Bd6 40.Ke3 Bf4 41.Ke2 Qg2 42.Nf2 Re8 43.Kd1 Qg1 44.Kc2 Qf2 45.Kd1 Qg1 46.Kc2 Qc1 47.Kb3 Qd1 48.Bc2 Rb8 49.Rb7 Rb7 50.Bb4 Rb4 51.Ka2 Qc2 52.Ka3 Qa4) 34...Qg5 35.Qb7 (35.a5 Bg3 36.Bc3 Bf4=) 35...Nf6 (35...Bd2 36.Bf2+/-) 36.Qb3 Ne4 37.Nf2?? (better 37.Qc2 Ng3 38.Rb3+/-) 37...Be3-+ 38.Bf1 (38.a5 Nf2 39.Qb8 Nh3 40.Kh2 Nf4 41.Qf8 Kf8 42.Rb8 Ke7 43.Rb7 Kf6 44.Rf7 Kf7 45.Bf1 Nf3 46.Kh1 Qh5 47.Bh4 Qh4) 38...Nf2 (38...Nf3 39.Kh1 Ng3) 39.Bf2-+ Bf2 (39...Rf2 40.Kh1 Qg3 41.Qe3 Qe3 42.Rd1 Nf3 43.Rb1 Rb2 44.gf3 Qf3 45.Kg1 Qf2 46.Kh1 Qh2) 40.Kh1 Bg3 (better 40...Be3!? 41.a5-+) 41.Ra1? (41.Be2 Rf2 42.Bf1 Qf4-+) 41...Bf4 (better 41...Qf4!? 42.Be2 Ng4 43.Qg3 Qg3 44.Bg4-+) 42.Ra2 (42.Be2 Bc1 43.Qd1-+) 42...Qg3 (better 42...Ng4 43.hg4 Be3-+) 43.Qg3 Bg3 44.Ra1 Rf2 (44...Ra8 45.Kg1-+) 45.a5-/+ Rf8 46.a6 Ra8 47.a7 Nd7 48.Be2? (48.Kg1 Bh4-/+) 48...Be5 (better 48...Nb6-+) 49.Bg4?? (49.Ra6 Kf7=+) 49...Nb6 (better 49...Ba1 50.Bd7 Ra7-+) 50.Be6 Kf8 (50...Kh7!? 51.Ra6 Nc4-/+) 51.Ra6=+ Nc4 52.Bd7 Ne3 (52...Ke7 53.Bc6 Nb6 54.g4=) 53.Bc6= Ra7 54.Ra7 c4 55.Ra8 Ke7 56.Kg1 (56.Re8 Kf6 57.Rf8 Kg5 58.Rf3=+) 56...Kf6?? (better 56...c3 57.Re8 Kf6-/+) 57.Kf2+/- Bd4 58.Ke2 (58.Kf3 Nc2+-) 58...Nf5 (58...Ng2 59.Kf3 Ne1 60.Ke4=) 59.Kd2 (59.g4!? Ne7+-) 59...Ng3 (59...Ne3 60.Rf8 Ke5 61.Re8 Kf4 62.g3 Kf3 63.g4+=) 60.Kc2 c3 61.Rf8 Ke5? (61...Kg5 62.Kd3 Bf6 63.Ra8+/-) 62.Rf3 (better 62.Kd3+-) 62...Ne2 63.Rd3 (better 63.Rf1 Ng3 64.Re1 Kf4 65.Be8+/-) 63...Be3?? (63...Ke4 64.Rd1 Ke3 65.Bd7+=) 64.Kd1 (better 64.Re3 Kf6 65.Re2+-) 64...Kf4? (better 64...Bh6+/-) 65.Kc2 (65.Ke2?! c2 66.g3 Kf5 67.Bd7 Kf6+/-) 65...Nd4?? (better 65...Ke5=) 66.Kc3+- Ne2 67.Kc2 (67.Kc4!? Ke4 68.Ra3 Nf4+-) 67...Ke4 68.Re3?? (better 68.g4+-) 68...Ke3=+ 69.Bb5?? (better 69.g4=+) 69...Kf2 (better 69...Nd4 70.Kc3 Nb5 71.Kc4 Ke4-+) 70.Kd1 (70.Kd1 Nc3 71.Kd2 Nb5 72.g4-+). BeepBeepImAJeep (2520) - anandthelegend (2370), lichess.org, 2018.

5.d4 ed4

6.ed4 0-0 7.Nf3 a6 8.a4 Qd7 9.Be2 ab5 10.ab5 Ra1 11.Ba1 Nd5 12.Qd2 Qf5 13.0-0 Nf4 14.Re1 Re8 15.Bf1 Nd7 16.Nc3 Nf6 17.Bb2 Bd7 18.Bc1 N6h5 19.b6 c6 20.Re3 Be6 21.Ne4 Qg6 22.Ba3 (22.Nc3 Bh3 23.Ne1 Bf5=) 22...Nd5 23.Re1 Bg4 (worse is 23...Nb6 24.Nd6 Bd6 25.Bd6+/-) 24.Neg5 (24.Nd6 Bf3 25.Ne8 Ba3=) 24...h6 25.h3 Bd7 (25...hg5 26.hg4 Nhf6 27.Bd3+/-) 26.Ne4 Nhf4 (26...f5 27.Nc3 Nb6 28.Rb1+=) 27.Ng3= Qf6 28.Ne4 Nh3 29.Kh1 Qf5 30.Nd6 Bd6 31.Re8 Be8 32.Bd6 Nf6 (32...Nb6? 33.Qe2 Nf2 34.Qf2+–) 33.Bd3 Qh5 34.Bh2 Ng5 (better is 34...Bd7!?=) 35.Ng5+/- hg5 36.Kg1 Nd5 37.Bc7 ½–½. Tiedemann,Joern (2125) – Schulz,Hans_Juergen (2305), RSX – FSO1 remoteschach.de, 2005.

6.Qd4 0-0 7.Nf3 (7.Nf3 a6 8.a4=+). Taulien,Hans_Juergen (2350) – Mack,Lienhard (1675), RSS7E–17 remoteschach.de, 2003.

6.Qd4 0-0 7.Nf3 Bf5 8.Bd3= Qd7 (8...Bd3 9.Qd3 a6 10.a4=) 9.e4 Bg4 10.Nbd2 a6 11.a4 Re8 12.0-0 d5 (better 12...Qc8!?+=) 13.Ne5+– Qc8 14.ed5 Rd8 (14...Bf5 15.Bf5 Qf5 16.g4+–) 15.c4 Bh5 16.Ndf3 (16.Rfe1 Re8+–) 16...Nbd7 (16...c6 17.Rac1+–) 17.Bf5+– Bc5 (better 17...Bf3 18.Nd7 Rd7 19.gf3 Qd8+–) 18.Qc3 Bf3 (18...Bg6 19.Nd7 Rd7 20.Bd7 Qd7+–) 19.Nd7 (19.Nf3?! Qb8+–; worse 19.Qf3 Ne5 20.Qh3 Qb8 21.Be5 Rd6+–; 19.gf3?! Bf8+–) 19...Rd7 20.Qf3 (20.gf3?! Qd8 21.Bd7 Qd7+–; 20.Bd7?! Qd7 21.Qf3 Ne8+–) 20...Qe8 (20...Qd8 21.Bf6 Qf6 22.Bd7 Qf3 23.gf3+–) 21.Bf6 gf6 (21...Rd6 22.Rae1 Rf6 23.Re8 Re8+–) 22.Qh5 h6 23.Qh6 (23.Qh6 Qe5 24.Qh7 Kf8 25.Rae1 Bf2 26.Kf2 Qf4 27.Kg1+–) 1–0. Pereira – Londra, internet, 2020.

6.Bd4 0-0 7.Nf3 a6 8.Bd3 +=.

6.Bd4 0-0 7.Nf3 c5 8.Bb2 a6 9.a4 ab5 (9...d5 10.Nc3+=) 10.Bb5= Na6 11.0-0 d5 12.Nbd2 c4 13.Qc1 (13.Re1 Nc7=) 13...Nc7 14.Bd4 Bf5 15.Qb2 Qc8 16.Bc3 White prepares a5 16...Rd8 (16...Ne4 17.Ne4 de4 A) worse is 18.Bg7 c3 (18...Nb5?! 19.Bh6 c3 20.Qb5 ef3 21.Qe5=) 19.Qc3 Ne6–/+; B) 18.Nd4 Nb5 19.ab5 Ra1 20.Ra1=) 17.Nd4 Bg6 18.a5. Taulien,Hans_Juergen (2225) – Isigkeit,Hans_Juergen (2225), RSL2, 2005.

6.Bd4= 0-0 7.Nf3 Bg4 8.Be2= Nbd7 (8...a6 9.c4=) 9.h3 Bh5 (9...Be6 10.Ng5=) 10.0-0 Nc5 11.c4 (11.Nbd2 Re8=) 11...Ne6 (11...Re8 12.Nc3=) 12.Bb2 Nd7 (12...a6 13.Nc3=) 13.Nd4 (13.Qd5 Bf6 14.Nc3 Bf3 15.Qf3 Ndc5+=) 13...Be2= 14.Qe2 Bf6 15.Nd2 (15.Rd1 a6=) 15...Re8 16.Ne6 Re6 17.Bf6 Qf6 18.Qf3 Qf3 19.Nf3 a6 20.Nd4 Re5 21.Rfc1 g6 (21...Nb6 22.Rc2=) 22.Rc2 (22.a4 Nc5=) 22...ab5 23.cb5 Rc5 24.Kf1 (24.Rd2 Ne5=) 24...Rc2 25.Nc2 Nc5 26.Ke2 (26.a3 h6=) 26...Ne4+= 27.Kf3 (27.g4 Nc3 28.Kd3 Nb5+=) 27...Nc3 28.Nd4 Ra2 29.Rc1 Nd5 (29...Ra3 30.Nc2 Ra8 31.Nd4+=) 30.e4 (30.Ke4!? Nf6 31.Kf3+=) 30...Ra3–/+ 31.Ke2 Nf4 32.Kf1 Ra4 33.Nf3 (33.Rd1 h6–/+) 33...Ne6 (33...Rb4 34.Nd2 Rb5 35.Rc7-+) 34.e5 (34.b6 c6 35.Nd2 d5–/+) 34...de5-+ 35.Ne5 (35.b6 cb6 36.Ne5 b5-+) 35...Rb4 36.Nd7 Rb5 37.Nf6 Kf8 (37...Kf8 38.Re1 Rf5 39.Nd7 Ke7-+) 0–1. Licciardello,Salvatore (2110) – Sarno,Spartaco (2405), Giardini Naxos, 2001.

5.Be2 0-0

6.c4 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 10.Nc3 Qa5 (10...d5 11.d4 e4 12.Qb3=+) 11.h3 Bd7 12.Nf3 cb5 13.cb5 e4 14.Ng5 (better 14.Nd4!?=) 14...d5-/+ 15.h4 h6 16.Nh3 Rc8 (16...Bd6 17.Qa4 Qc7 18.g4 Bg4 19.Bg4 Ng4 20.Nd5 Qc1 21.Qd1=+) 17.Nf4 (17.g4 d4 18.ed4 Bg4 19.Bg4 Ng4 20.Qg4 Qa1 21.Ke2 Qh1 22.Qc8 Bf8=) 17...Be6 (better 17...Qa3!?=+) 18.g4= Bd6 19.Ne6 fe6 20.g5 Nh7 (better 20...hg5!? 21.hg5 Nh7=) 21.gh6 g6 22.Rg1 Kf7 23.h5 (better 23.Bb2+/-) 23...Nf8?? (better 23...g5+/-) 24.hg6+- Ng6 25.Bh5 Rg8 (25...Nd7 26.Bg6 Ke7 27.Be4+-) 26.Bg6 (better 26.h7 Rh8 27.Rg6+-) 26...Rg6 27.Bb2 (better 27.Rg6 Kg6 28.Qg4 Kh6 29.Qe6 Kh7 30.Bb2+-) 27...Qb4 (better 27...Rg1 28.Ke2 Rd1 29.Kd1 Kg6-+) 28.Rg6 (better 28.Qh5 Ke7 29.Rg6+-) 28...Kg6 29.Qg4 Kh6 30.Ne4 (better 30.Qe6 Kh7 31.Qf7 Kh6 32.Qf6 Kh5 33.Nd5 Qb5 34.Qd6+-) 30...Qe4=+ (30...de4?! 31.Qe6 Kh5 32.Qf5 Kh6 33.Qf6 Kh5 34.f4 ef3 35.Qf3 Kg5 36.Qd5 Kh4 37.Be5 Be5 38.Qe5=) 31.Qg7 Kh5 32.Bf6 (32.Bf6 Qf5 33.Qh8 Kg4 34.Qh4 Kf3 35.Qh1 Kg4 36.Qh4 Kf3 37.Qh1 Kg4 38.Qh4=) 1-0. ClayPigeons (2165) - SyedNasifFuad (2110), Rated Bullet game, lichess.org, 2019.

6.c4 a6 7.d4 e4 8.Nc3+=.

6.c4 Ne8 7.Nf3 f5 8.0-0 Nf6 9.d3 Nbd7 10.Nbd2 Nc5 11.Qc2 Nh5 (11...e4 12.de4 fe4 13.Ng5+=) 12.Ne5 (12.Rae1!?+=) 12...de5= 13.Bh5 Nd3 14.Rfd1 (14.Rad1 e4=) 14...e4+= 15.Nb3 Bd7 16.Bc3 Bh4 17.g3 Be7 18.Be2 Qe8 19.Bd3 ed3 20.Rd3 Rd8 (20...f4!? 21.e4 fg3 22.Rg3 Rf7+=) 21.Rad1+/- Bd6 (21...c6 22.Qb2 g6 23.Nd4+/-) 22.c5 (better is 22.Na5 Bc8 23.c5+–) 22...f4? (better is 22...Bb5 23.cd6 Bd3 24.Rd3 cd6+/-) 23.cd6+– Bf5 (23...Bb5 24.Rd4 fg3 25.hg3 Rd6 26.Rd6 cd6 27.Rd6+–) 24.dc7 Bd3 (24...Rd3 25.Rd3 fg3 26.hg3 Bd3 27.Qd3 Qf7+–) 25.cd8Q Bc2 26.Qe8 (26.Qe8 Re8 27.Rd7 Bb3 28.ab3 fe3 29.Rg7 Kf8 30.Rh7+–) 1–0. mtr – Riel, internet, 2001.

6.c4 Bf5 7.Nc3 Nbd7 8.d4 Re8 (8...a6 9.ba6 ba6 10.Nf3+=) 9.Nf3= ed4 10.ed4 (10.Nd4 Bg6=) 10...Nb6 11.0-0 d5 12.c5 Nbd7 (12...Nc4 13.Bc1=) 13.Re1 c6 14.a4 Qc7 15.Nb1 (15.Qb3 b6 16.bc6 Qc6+/-) 15...b6 16.bc6 Qc6 17.Bb5 Qc7 18.c6 Nb8 19.Ne5 (19.a5 Nc6 20.Ne5 Bd7+=) 19...a6–/+ 20.Bd3 Bd3 21.Qd3 Nc6 (21...Bb4 22.Rc1 Re6=) 22.Nd2?? (better is 22.Rc1 Bc5 23.Nc6 Qc6 24.dc5 bc5 25.Nd2+/-) 22...Qb7 23.Qg3 (23.Rac1 Bd6–/+) 23...Bb4 24.Re2? (better is 24.Bc3 Nh5 25.Qf3 Ne5 26.Re5 Bc3 27.Qc3–/+) 24...Bd2-+ 25.Rd2 Ne4 26.Qf4 Nd2 27.Qd2 Ne5 28.de5 Rab8 29.Qd4 (29.Bd4 Qe7-+) 29...b5 30.a5 Re6 (30...b4 31.Rc1-+) 31.f4 Ra8 (31...Rc6 32.Rd1-+) 32.f5 Ree8 (32...Rc6 33.Re1-+) 33.Qg4 h6 34.h4 (better is 34.Re1-+) 34...Qb8?? (34...Rab8 35.f6 g6 36.Rc1-+) 35.h5? (better is 35.e6 f6 36.Bf6–/+) 35...Re5 36.Be5 Qe5 37.Rf1 Qe3 38.Kh1 Qg5 (38...Rd8 39.f6 Qg5 40.Rf4-+) 39.Qf3 (39.Qg5 hg5 40.Rd1 Rd8-+) 39...Qh4 40.Kg1 Qd4 41.Kh1 (41.Kh2 Re8-+) 41...Re8 42.Rd1 (42.Kh2 Re3 43.Qf2 b4-+) 42...Qe4 (42...Qh4 43.Kg1-+) 43.Qh3 Re5 (43...Qf4 44.f6 Qf6 45.Qg4-+) 44.f6 (44.Rf1 Qe3 45.Qe3 Re3-+) 44...Qf5 (better is 44...Qe2 45.Rc1-+) 45.Qf5 Rf5 46.g4 Rf6 (46...Rg5 47.Kg2-+) 47.Rd5 Rf1 48.Kg2 Ra1 49.Rd8 Kh7 50.Rd7 (50.Rf8 f6-+) 50...f6 51.Kf3 Ra5 52.Kf4 b4 53.Rb7 Rb5 54.Rb5 ab5 55.Ke3 g6 (55...g6 56.Kd2 gh5 57.gh5 f5-+) 0–1. Schulte,Andreas – Schlattmann, Untergrombach op, 1990.

6.Nf3 (--> 5.Nf3 0-0 6.Be2).

5.Be2 Bd7

6.Nf3 0-0 7.c4 (7.0-0 a6 8.a4 Bf5=) 7...Be6 (7...e4 8.Nd4=) 8.Nc3 (8.0-0=) 8...d5 (8...a6!?=) 9.cd5+= Nd5 10.Ne5 (10.Nd5 Bd5 11.Be5 c6+=) 10...Nc3 (10...a6 11.0-0+=) 11.Bc3 Bf6 (11...f6 12.Nd3+/-) 12.0-0 Qd5 (12...a6 13.Qa4+/-) 13.f4 (13.Bf3 Qb5 14.Rb1 Qe8 15.Bb7 Ba2+–) 13...Nd7 (13...Be5 14.fe5 c6 15.Qb1+/-) 14.Bc4 (better is 14.Nd7 Qd7 15.Bf6 gf6 16.d4+–) 14...Qc5?? (14...Qd6 15.Be6 fe6 16.d4+/-) 15.Nd7 (better is 15.Be6 Be5 16.Bd7 (16.Be5?! fe6 17.Rc1 Qb5+/-; 16.fe5?! fe6 17.Qb3 Rf1 18.Rf1 Re8+–) 16...Bc3 17.dc3 Qe3 18.Kh1 Qc3 19.Rc1+–) 15...Bd7+/- 16.Bf6 (16.Qb3!? Qf5 17.Rac1 Bc3 18.Rc3+/-) 16...Qc4+= 17.Bd4 (17.Be5 f6 18.d3 Qd5+=) 17...Bb5= 18.Qg4 f6 19.Rfc1 Qd5? (better is 19...Qf7!?+=) 20.Rc7+/- Bc6?? (better is 20...Rf7 21.Rc5 Bd7 22.Rd5 Bg4+/-) 21.Qg7 1–0. DEFFM – rzalewski, freechess.org, 2016.

6.Nf3 a6 7.a4=.

6.Nf3 h6 7.0-0 0-0 8.d4 e4 9.Nfd2 d5 10.c4 c6 11.Nc3 Qc8 (11...dc4 12.bc6 Nc6 13.d5+=) 12.Rc1+= Bg4? (better 12...dc4!? 13.Bc4 cb5+=) 13.Bg4 (13.cd5 Bf5+–) 13...Ng4 14.h3 Nf6 15.cd5 cd5 (better 15...Qf5 16.dc6 bc6 17.Nce4 Ne4+–) 16.Nd5! Nd5 (16...Qd7 17.Nc7 Na6 18.Na8 Qb5 19.Qc2+–) 17.Rc8 Rc8 18.Ne4 1–0. DEFFM – GuestSXFH, freechess.org, 2020.

6.Nf3 h6 7.Nc3 Be6=.

6.Nf3 h6 7.d4 e4 8.Nfd2 d5 (8...0-0 9.c4=) 9.c4 c5? (better is 9...dc4!? 10.Nc3 0-0+=) 10.cd5+– Nd5 (10...Bf5 11.dc5 Nd5 12.Nc3 Nc3 13.Bc3+/-) 11.Ne4 f5? (better is 11...Bf5 12.Bf3 Nd7 13.Nc5 Nc5 14.dc5 Nb4+–) 12.Nc5 (worse is 12.dc5 Be6 13.Nd6 Bd6 14.cd6 Qd6 15.Bh5 Kd8+–) 12...Qa5 13.Qd2 (13.Nd2 Bc5 14.dc5 Bb5 15.Bb5 Qb5 16.Bg7 Rg8 17.Qh5 Ke7 18.Bh6 Nd7 19.Qf5 Nc5 20.Qe5 Ne6+–) 13...Qd2 14.Nd2 Bc8 15.0-0 (15.Bh5 Kf8 16.Bf3 Nb4+–) 15...0-0 (15...Nd7 16.Bf3 N7f6 17.Rac1+–) 16.Bc4 (16.Bf3 Rd8+–) 16...Rd8 17.Rac1 b6 (17...Bc5 18.dc5 a6 19.a4 ab5 20.ab5+–) 18.Nd3 Kh8 (18...Kh7+–) 19.Bd5 Rd5 20.Rc8 Kh7 21.a4 (better is 21.Rfc1 Bd6+–) 21...Rd8 (21...a6 22.Nc4 Rd8 23.Nb6 Rc8 24.Nc8+–) 22.Rfc1 Nd7 (22...f4 23.Nf4 a6 24.Rd8 Bd8 25.Rc8+–) 23.Ra8 Ra8 24.Rc7 Rd8 25.Ra7 Bd6 (25...Bf8 26.Rb7+–) 26.Nc4 (better is 26.d5 Kg8 27.Nc4 Bf8+–) 26...Bb8 (26...Bf8 27.d5+–) 27.Rb7 Rc8 28.Nb6 Nb6 29.Rb6 1–0. Lomakina,Galja (1965) – Kozharinov,Sergey (1930), 2016.

5.Be2 Nbd7

6.a3 0-0 7.d3 (7.Nc3 Nb6 8.Nf3 Bf5+=) 7...c6 8.Nf3 Qc7 9.Nc3 b6 (better is 9...cb5!? 10.0-0 a6–/+) 10.0-0= Bb7 11.Nh4 g6 12.f4 e4 (better is 12...d5!? 13.g3 d4 14.ed4 ed4 15.bc6 Bc6–/+ (worse is 15...Qc6 16.Bf3 Qc8 17.Bb7 Qb7 18.Nb5+=)) 13.de4= Ne4?? (better is 13...cb5 14.Qd4 a6=) 14.Ne4+– Bh4 (14...c5 15.Ng5+–) 15.Qd4 f6 16.Qd6 (better is 16.Nd6 Nc5 17.Nb7 Nb7 18.bc6+–) 16...Qd8 (16...Rac8 17.Qe6 Kg7 18.Rad1+–) 17.g3 (better is 17.bc6 Bc6 18.Qc6+–) 17...f5 (17...cb5 18.gh4 Be4 19.Qe6 Kg7 20.Qe4 Nc5+–) 18.Qe6 (better is 18.bc6 Bc6 19.Bc4 Rf7 20.Qc6 Rc8 21.Bf7 Kf8+–) 18...Rf7 19.Nd6 Qe7 20.Qf7 (better is 20.Bc4!? Qe6 21.Be6 Be7 22.Bf7 Kf8 23.Nb7 Kf7+–) 20...Qf7 21.Nf7 (21.gh4?! Qe7 22.Nb7 Rc8 23.Bc4 Kf8+/-; 21.Nb7 Bf6 22.Bf6 Nf6 (22...Qf6?! 23.Rad1 Qe7 24.bc6 Qe3 25.Rf2+=) 23.bc6 Qd5-+) 21...Kf7 22.gh4 Re8 (22...cb5 23.Bb5 Nc5 24.Rfd1+–) 23.Rfd1 Bc8 (23...Nc5 24.Bc4 Ke7 25.a4+–) 24.Rd3 (better is 24.bc6!? Nc5 25.c7 Ne6+–) 24...c5 (24...cb5 25.Rad1 Nc5 26.Rd8+–) 25.Rad1 Re7 26.Kf2 1–0. De Kruif,K (2050) – Cummins,J (1895), Guernsey Open, Guernsey GCI, 2009.

6.Nf3 Nb6 7.a4 a6 (7...Be6 8.Nc3=) 8.c4 (8.a5 Nbd7 9.ba6 ba6=) 8...Be6 (8...ab5 9.cb5 0-0 10.Nc3=) 9.ba6= ba6 10.Qc2 (10.a5 Nbd7=) 10...0-0 (10...Rb8!? 11.d3 0-0=) 11.a5+= Nbd7 12.Ng5 h6 13.Ne6 fe6 14.0-0 d5 (14...Rb8!?+=) 15.cd5+/- ed5 16.Qc6 Kh8 17.Ba6 Nc5 18.Be2 Nb3 19.a6 (19.Ra2!? Na5 20.Qc2+=) 19...Na1= 20.Ba1 Qd7 (20...Qd6 21.Qd6 Bd6 22.d4 ed4 23.Bd4=+) 21.Rc1 Qc6 (21...Rfb8 22.Qd7 Nd7 23.d4=) 22.Rc6+= Bd6 23.Nc3 Rfb8 24.Nb5 The backward pawn on c7 becomes a target 24...Nd7 25.d4 ed4? (better 25...e4 26.h3 Rb6 27.Rb6 Nb6=+) 26.Bd4+- Ne5 27.Be5 Be5 28.f4 Bf6 29.Nc7 (better 29.Kf2!? Bd8 30.Kf3+- (30.Nc7?! Rc8=+)) 29...Rc8+/- 30.Rf6 Rc7 (30...gf6!? 31.Na8 Ra8+=) 31.Rd6+- Rc5 32.Kf2 Ra5 33.Rd7 Kg8 34.Kf3 Kf8 35.f5 d4 36.e4 R5a6 (36...Rb8 37.Rd4 Ra3 38.Kf4+-) 37.Ba6 Ra6 38.Rd4 Ra3 39.Kf4 (39.Ke2 Ra2 40.Rd2 Ra3+-) 39...Kf7 (better 39...Ra2+-) 40.Rd7 Kf6 (40...Kf8+-) 41.e5 1-0. DEFFM – GuestXMVJ, freechess.org, 2021.

5.Be2 Be6

6.Nf3 0-0 7.c4 (7.0-0 a6 8.Ng5 ab5 9.Ne6 fe6 10.Bb5+=) 7...h6 (7...a6 8.ba6 Na6 9.0-0+= Nc5 10.d4+=) 8.a4 (8.d4 e4 9.Nfd2 a6 10.d5=) 8...a5 (8...a6 9.0-0 ab5 10.ab5=) 9.0-0 Ne8 (9...Nbd7 10.d4=) 10.Nc3 (10.d4+=) 10...f5 11.d4 e4 12.Nd2 Nf6 13.f3 ef3 14.Nf3 Nbd7 15.Bd3 (15.d5 Bf7+/-) 15...Ng4 (15...d5 16.Nh4 f4 17.cd5 Nd5 18.Nd5 Bd5+/-) 16.Qe2+/- Bg5 (16...Nb6 17.h3 Nf6 18.Nh4+/-) 17.e4 (17.Nd1!?+–) 17...Be3+/- 18.Kh1 f4 19.Nd1 Nb6 (19...Ndf6 20.e5 de5 21.de5+/- (21.Ne5?! Ne5 22.de5 Ng4=)) 20.h3 (20.Ne3?! Ne3 21.Rfc1 Rc8+=) 20...Nf6 21.Ne3 fe3 22.d5 (22.Qe3?! Nc4 23.Qc1 Nb2 24.Qb2 Qe7+=) 22...Nh5 23.Kh2 Nf4 24.Qe3 Nd3 25.Qd3 Bd7 26.Qd4 (26.Bd4 Qe7+–) 26...Qe7 27.e5 de5 (better is 27...Bf5+–) 28.Ne5 Rf1 29.Rf1 Rf8 (29...Na4 30.Rf7 Qf7 31.Nf7 Nb2+–) 30.Rf8 Qf8 31.c5 (31.Nd7?! Nd7 32.Qg4 Qe7+–) 1–0. Schiffler – Boettcher, Sch'20, 1950.

6.Nf3 Nbd7 7.Ng5 h6 ( 7...Bf5!?=+) 8.Ne6+= fe6 9.Bg4 (9.Bh5 Kf8+=) 9...0-0 (9...Kf7!?+=) 10.Be6+/- Kh8 11.Nc3 Nc5 12.Bh3 Qe8 13.Ne2 ( 13.0-0!?+/-) 13...Qb5= 14.Ba3 (14.Rb1 Qa6=) 14...Qc6 15.Bc5 Qc5 16.Ng3 Qd5 17.0-0 Ne4 18.Qe2 (18.c4!? Qc6 19.Ne4 Qe4 20.d3=) 18...Qd2–/+ 19.Qd2 Nd2 20.Rfd1 Nc4 21.e4 Bf6 22.Be6 Nb6 23.c4 Rae8 24.Bd5? ( 24.Bf5!?–/+) 24...c6-+ 25.Nh5? cd5 26.cd5 Rc8 27.Nf6 Rf6 28.Rf1 Rc2 29.h3 Rf8 30.g4 Rfc8 31.f4 ef4 32.Rf4 Re2 33.Rf7 Rcc2 34.Rb7 Nc4 35.Rb8-+ Kh7 36.Kf1 Ne3 37.Kg1 Rg2 38.Kh1 Rh2 39.Kg1 Rcg2 0–1. pinecrest1981 – jones662, Live Game Caissa's Web, 2004.

6.Nf3 h6 7.0-0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.c4 0-0 12.d4 Ne4 (better 12...e4!? 13.Nfd2 cb5=) 13.de5 d5 14.Nd4 Qc7 15.Ne6 fe6 16.Bg4 Qd7 (16...Nc5 17.Qc2 Nbd7 18.Qg6 Ne5 19.Be6 Kh8 20.Qh5+-) 17.cd5 cd5 18.Bd4 Bh4? (better 18...Bb4+/-) 19.f3+- Nf2 20.Rf2 Bf2 21.Kf2 Qb5 (21...Qf7 22.Nc3+-) 22.Be6 Kh8 23.Nc3 Nc6 (23...Qc6 24.Bd5 Qd7+-) 24.Nb5 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Nf3 h6 7.a4 Nbd7 8.d4 e4 9.Nfd2 d5 10.c4 c6 11.Nc3 Nb6 12.0-0 Nc4 13.Nc4 dc4 14.Qc2 Rc8 15.Ne4 Ne4 16.Qe4 Bd5 (16...cb5!? 17.ab5 c3+=) 17.Qc2+= cb5 18.e4 Bc6 19.d5 Bd7 20.Bg7 (20.ab5!? c3 21.Ba3+/- (21.Bc3?! Bb4=)) 20...Rg8= 21.Bh6 (21.Bb2 b4 22.e5 Bc5 23.Bc4 Bh3+=) 21...Bh3 22.g3 (22.ab5?? Bg2 23.Qc3 Be4 24.Bg7 Bf6-+) 22...Bf1 23.Rf1 Qb6 (23...a6 24.ab5 ab5 25.Rb1=) 24.Bf4 a6 25.ab5 ab5 26.e5 b4? (better 26...Qg6 27.Qg6 fg6+=) 27.Qa4 Kf8 28.d6 Bg5 29.Bg5 Rg5 30.Qd7 Re8 31.Bc4 (31.Bc4 Rg7 32.Bb5+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Be2 Bf5

6.d3 0-0 7.Nf3+=.

6.d3 Nbd7 7.Nf3 0-0 (7...a6 8.a4+=) 8.h3 (8.0-0 c6=) 8...c6 9.a4 Qc7 (9...a6 10.Nbd2+=) 10.e4 Be6 (10...Bg6 11.Nh4+=) 11.Ng5 d5 (11...Nc5 12.0-0+=) 12.Ne6 (12.0-0 Nc5+=) 12...fe6 13.Bg4 de4 (13...Ng4 14.Qg4 Rf6 15.Qe2+=) 14.Be6 Kh8 15.de4 (15.Bd7 Qd7 16.Nc3 Bb4=) 15...Nc5 16.Bc4 (16.Bg4 Nce4 (16...Nfe4?! 17.0-0+=) 17.0-0 cb5–/+) 16...Nfe4 17.0-0 Rf5 (17...cb5 18.Bb5 a6 19.Be2–/+) 18.Nd2 (18.Qe1!? Nf2 19.Rf2+=) 18...Rd8–/+ 19.Qg4 (better is 19.Bd3 Nd3 20.cd3–/+) 19...Rf4-+ 20.Qh5 Bf6?? (20...Rh4 21.Be5 Rh5 (21...Nd2?! 22.Bc7 Rh5 23.Bd8 Bd8 24.Rfe1=) 22.Bc7 Rd2-+ (22...Nd2?! 23.Bd8 Bd8 24.Rfe1=)) 21.Ne4 (21.Nf3 Nd6 22.Bd3 Nd3 23.cd3 Nf7+=) 21...Ne4 (21...Re4 22.Bb3=) 22.f3?? (better is 22.Bd3 g6 23.Qe2=) 22...Ng3 (22...Ng3 23.Qf7 Qf7 24.Bf7 Nf1 25.Kf1 e4 26.Bf6 Rf6-+ (26...gf6?! 27.Kf2-+)) 0–1. GuestPCKQ – apwismar, freechess.org, 2016.

6.Nf3 a6 7.d4=.

6.Nf3 Nbd7 7.0-0 0-0=.

6.Nf3 Nbd7 7.d3 0-0 8.0-0 a6 9.d4 e4 10.Ng5+=.

6.Nf3 Nbd7 7.d3 0-0 8.0-0 e4 9.Nd4 Bg6 10.de4 Ne4 11.Nd2 Ndc5 12.a4 Qd7 13.Bg4 f5 14.Bh3 (better is 14.Bf3!?=) 14...Ng5–/+ 15.Kh1 Nh3 16.gh3 f4 17.Qg4 fe3 18.fe3 Bf6 19.Qd7 Nd7 20.Rab1 (20.e4 Nc5 21.Rae1 Rae8-+) 20...Rae8-+ 21.Rfe1 Nc5 22.a5 Bg5 23.Nf1 Rf2 24.Ng3 (24.Kg1 Ref8-+) 24...Be3 (24...Bc2?! 25.Nc2 Rc2 26.Bd4-+) 25.Bc1 (25.Rbd1-+) 0–1. Gross,Wilhelm – Merten,Rainer, xxii/01, 1988.

6.Nf3 Nbd7 7.d3 0-0+= 8.Nbd2 Re8 (8...a6 9.d4 e4 10.Nh4+=) 9.0-0 e4 (9...a6 10.a4=) 10.Nh4 (10.Nd4 Bg6=) 10...ed3 11.Nf5 de2 12.Qe2 Ne5 (12...a6 13.Bd4=) 13.a4 Qd7 14.Nd4 (14.e4 a6=) 14...Qg4 (14...d5 15.c4=) 15.N2f3 (15.Qg4 Nfg4 16.e4 a6=) 15...Nf3 (15...a6 16.Rfd1=) 16.Nf3 (16.Qf3 Qf3 17.Nf3 d5=) 16...Ne4 17.h3 (17.Qc4 Rac8=) 17...Qg6+= 18.c4 a6 (18...Bf6 19.Bf6 Qf6 20.a5=) 19.Rfc1 (19.a5 Nc5=) 19...Nc5+= 20.Ra3 (20.Rd1 Bf6=) 20...Bf6 (20...ab5 21.cb5 d5 22.a5=) 21.Bf6 Qf6 (worse is 21...gf6 22.a5+=) 22.Nd4 (22.a5!?+=) 22...Qd4!–/+ 23.ed4 Exploits the pin 23...Re2 24.dc5 dc5 25.Raa1 (25.Rd1 Kf8+=) 25...Kf8 (25...Rae8 26.ba6 ba6 27.Kf1–/+) 26.Kf1 Re4 27.Ra3 Ke7 (27...ab5 28.cb5 b6 29.a5–/+) 28.Rd3 (28.Re1 Re1 29.Ke1 ab5 30.Re3 Kf6 31.ab5 Ra2–/+) 28...ab5–/+ 29.ab5 Rd8 (29...Ra4 30.Rcd1 Rac4 31.Rd7 Kf6 32.Rc7–/+) 30.Rdc3 (30.Rd8!? Kd8 31.g3–/+) 30...Rd2 31.Re1 Re1 32.Ke1 Rd4 33.f3 (33.g3 Kd6–/+) 33...Kd7 (33...f5 34.g3–/+) 34.Ke2 (34.g3 b6–/+) 34...b6 35.Rd3 (better is 35.g3!?–/+) 35...Rd3-+ 36.Kd3 c6 37.g3 (37.bc6 Kc6 38.f4 b5-+) 37...cb5 38.cb5 Kd6 39.Kc4 Ke5 (39...Ke5 40.h4 h5-+) 0–1. Acevedo,Daiana – Plazaola,Sebastian, Najdorf U20 op, 2003.

6.Nf3 0-0

7.0-0 Nbd7 8.d4 e4 9.Nfd2 d5 10.c4 c6 11.a4 Re8 (better 11...cb5 12.ab5 dc4 13.Nc4 Nb6=) 12.g4+/- 1-0. onur604 (2320) - PUIG_98 (2100), Casual Rapid game, lichess.org, 2021.

7.Nc3 Nbd7 8.d3 Nb6 9.0-0 Qd7 10.e4 Bg4 11.a4 c6 12.a5 Nc8 13.bc6 Qc6 (13...bc6 14.d4 Rb8 15.Rb1+=) 14.h3 (better is 14.Ne5!? de5 15.Bg4+/-) 14...Bd7 15.Nd2 Be6 16.f4 ef4 17.Rf4 Nd7 18.Nb3 Bf6 19.d4 Bb3 (better is 19...Re8!?=) 20.cb3+/- Ne7 21.Rc1 Qc7 22.Nd5 (22.a6 ba6 23.Nd5 Qd8 24.Nf6 Nf6+/-) 22...Qd8 (22...Qa5 23.Rf6 Nd5 24.Rd6+/-) 23.Nf6 Nf6 24.Qe1 (24.d5!?+/-) 24...Ng6+= 25.Rf5 Ne4 26.Bf3 Nf6 27.Bb7 Rb8 28.a6 Re8 29.Qg3 Ne4 30.Qd3 Nf6 31.Rcf1 Qb6 32.Kh1 Re7 33.d5 Ne5 34.Qg3 Ng6? (34...Ne4 35.Qh4 Ng6+=) 35.Bf6+– gf6 36.Rf6 Rbe8 (36...Re3 37.Qg4+–) 37.Qd6 Qb3 38.Qc6 (38.Qc5!? Qg3 39.Qa7 Re2+–) 38...Qb4? (38...Ne5 39.Qc5 Nd7 40.Qa7 Nf6 41.Rf6 Qd5 42.Bd5 Ra7=) 39.Qc1 (better is 39.Rf7! Ne5 40.Re7 Qe7+–). Gross,Wilhelm – Merten,Rainer, xvii/01, xvii/03 (?), 1988.

7.c4 Nbd7 8.0-0 h6 9.Nc3 c6 10.a4 Nh7 (10...d5 11.d4 e4 12.Nd2=) 11.Ne1 Qc7 (11...Qa5 12.f4 ef4 13.Rf4+=) 12.f4+= e4? (12...ef4 13.Rf4 Be6+=) 13.Bg4?? (better is 13.g4 Be6 14.f5 (14.Ne4?! Ndf6 15.Nc3 Rfe8+/-) 14...Bc4 15.Bc4+–) 13...Bg4= 14.Qg4 Nhf6 15.Qg3 d5 (better is 15...Nc5!?=) 16.cd5+= cd5 (16...Nc5!?+=) 17.Nd5!+/- Qd8 (17...Nd5 18.Qg7) 18.Ne7 Qe7 19.Ba3 Qe6 (better is 19...Nc5!?+/-) 20.Bf8+– Kf8 21.Nc2 Qb3 22.Nd4 Qd3 23.Rfd1 Rc8 24.h3 Nd5 (24...a5 25.Rdc1 Rd8 26.Rc7+–) 25.Qg4 (25.Nf5 g6 26.Nh6 Ke8+–) 25...Rd8 (25...N5f6 26.Qh4+–) 26.Rac1 (26.Nf5 g6 27.Qh4 N7f6 28.Nh6 Ke8+–) 26...Qa3 (26...N7f6 27.Qg3+–) 27.Qf5 (27.Nf5 g6 28.Qh4 N7f6 29.Qh6 Ke8+–) 27...N7f6 (27...N5f6 28.h4 Kg8+–) 28.Rc8 Rc8 29.Qc8 Ne8 30.Rc1 (30.Qb7 Qa4 31.Rc1 Ndf6+–) 30...Ne3 31.Qc5 (31.de3?! Qe3 32.Kh1 Qd4 33.Qb7 Qa4+–) ½–½. Gross,Wilhelm – Merten,Rainer, xvii/23, 1989.

7.c4 Nbd7 8.d4 Bb1 (8...Re8!?+=) 9.Qb1 e4 10.Ng5 Re8 (10...d5!? 11.cd5 Bb4 12.Kf1 Re8+=) 11.Ne4+/- c6 12.0-0 Qc7 13.Ng5 h6 14.Nf3 Bf8 15.Bd3 Nb6 16.a4 a5 17.ba6 ba6 18.a5 Nbd7 19.Qc2 Rab8 20.Bc3 Rb7 21.Rfb1 Reb8 22.Rb7 Rb7 23.Rb1 Be7 24.Nh4 Nd5 (24...Rb1 25.Qb1 g6 26.Nf3+–) 25.cd5 (25.Rb7 Qb7 26.Nf5 Nc3 27.Ne7 Kf8 28.Nc6 Qc6 29.Qc3 Kg8+–) 25...Bh4 26.Bb4 (26.Rc1!? Ra7+–) 26...c5 27.dc5 Nc5 28.Bc5 Rb1 29.Qb1 dc5 30.Qb6 Bd8 ½–½. Gross,Wilhelm – Merten,Rainer, xvii/13, 1988.

7.c4 h6 8.a4 Nbd7 9.d4 ed4 (9...e4 10.Nfd2=) 10.Nd4 Bg6 11.0-0 Nc5 12.Nc3 d5 13.cd5 Nd5 14.Nd5 Qd5 15.Bf3 Be4 (15...Qg5 16.Ba3 Rab8 17.Qd2+=) 16.Ba3 (16.Be4 Qe4 17.Qh5 f5=) 16...Bf3 17.Nf3 Qd1 18.Rfd1 Rfd8 (18...Rfe8 19.Bc5 Bc5 20.Rd5+=) 19.Rdc1+/- b6 20.Nd4 Bd6 21.a5 g6 22.Rc2 f5 (22...a6 23.Nc6 Re8 24.ab6 ab5 25.bc7+=) 23.Bc5+/- Bc5 (23...bc5!? 24.Nc6 Rd7+/-) 24.Ne6+- Rd7 25.Nc5 bc5 26.Rc5 Rad8 (26...a6 27.f3+-) 27.g3 Kf7 (27...a6 28.ba6 Ra8 29.Rc6+-) 28.Rac1 Rd1 29.Rd1 Rd1 30.Kg2 Rd7 31.Rc6 h5 32.h4 Kg7 33.Kf3 Kh6 34.Ra6 (34.Kf4!? Re7 35.f3 Rd7+-) 34...Rd5 35.Ra7 Rb5 36.a6 Ra5 37.Kf4 c6 (37...c5 38.Ke5+-) 38.Ra8 Kg7 (38...c5 39.Ke5 Kg7+-) 39.Kg5 f4 40.Kf4 Kf6 41.a7 Kg7 42.e4 c5 43.Ke5 1-0. onur604 (2320) - ateslisincap (2220), Casual Rapid game, lichess.org, 2021.

5.Nf3 0-0

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

6.Bc4 a6 7.a4 (7.ba6 Na6 8.0-0 e4 9.Nd4 c5 10.Nb5 d5+=; 7.0-0 Bg4 8.ba6 Na6 9.h3 Bh5 10.Nc3 c6+=; 7.Nc3 e4 8.Nd4 d5 9.Be2 ab5 10.Ndb5 c6–/+) 7...ab5 (7...Bg4 8.h3 Bh5 9.Be2 e4 10.Nd4 Be2+=) 8.ab5 Ra1 9.Ba1 Nbd7 (9...d5 10.Be2 e4+=) 10.Nc3 Nb6 11.Bb3 Bd7 12.0-0 Qe8 13.Qe2 c6 14.bc6 Bc6 15.Bb2 (15.e4 Qd7+=) 15...Nfd7 16.Ra1 Kh8 17.Na4 Na4 18.Ba4 Ba4 19.Ra4 Nc5 20.Ra7 Qb8 21.Ra3 f5 22.Qb5 Qe8 23.Ra7?? (better is 23.Qe8 Re8 24.d4+/-) 23...Qb5-+ (23...Qb5 24.Ra2 Na4 25.Ra4 Qa4-+) 0–1. Bini,Gabriele – Rojas Mirabal,Pedro, Canarias en Red prel 4th blitz, 2004.

6.Bc4 d5 7.Bb3 (7.Be2 e4 8.Ne5 Ne8 9.Ng4 Nd6 10.Nc3 Bg4 11.Bg4+=) 7...e4 8.Ne5 Nbd7 (8...a6 9.ba6 Ra6 10.0-0 c5 11.d3+=) 9.0-0 (9.f3 Bd6 10.Nd7 Bd7 11.a4+=) 9...Ne5 10.Be5 c5 (10...Bg4 11.f3+=) 11.bc6 bc6 12.Ba4 Bb7 13.Nc3 Re8 (better is 13...Bd6!? 14.Bd6 Qd6+=) 14.Rb1+= Qc8 15.Bf6 gf6 (better is 15...Bf6!? 16.Nd5 Be5+=) 16.Nd5!+– Ba6 (16...cd5 17.Be8) 17.Ne7 Re7 18.Re1 Qc7 (18...Bc4 19.a3+–) 19.Qg4 Kh8 20.Rb4 Rg8 (20...Rae8 21.Qf5 Qd6 22.Rd4+–) 21.Qh4 Qd6 22.Rd4 (22.Re4 Re4 23.Qe4 Qd2+–) 22...Qe6 23.Bb3 Qe5 24.Qf4 Qg5 25.Qg5 fg5 26.Rd6 Bb5 (better is 26...Rg6!? 27.Rg6 hg6+/-) 27.a4+– Ba6 28.Rc6 (28.Rc6 Rg6 29.Rg6 hg6 30.f3+–) 1–0. Langguth,Wilhelm – Gallien,Knut, corr ICCF–Cup8 V026, 1990.

6.d4 e4 7.Nfd2 d5 8.c4 c6 9.cd5 cd5 10.Be2 Re8 (10...a6 11.Qa4=+) 11.0-0 Bf5 12.Nc3 Nbd7? (12...Qd6 13.Qb3=) 13.Qb3 (better 13.g4 Be6 14.g5+–) 13...Nf8 14.a4 Rc8 15.a5 Bd6 16.g3 (16.Rfc1 h6=) 16...Bh3 (16...Be6 17.Rac1=) 17.Rfc1 (worse 17.Nd5 A) 17...Bf1?! A1) 18.Nf1? Nd5 19.b6 a6-+; A2) worse 18.Rf1 Nd5 (worse 18...Qa5 19.Nf6 gf6 20.Nc4+–) 19.Qd5 Rc2–/+; A3) 18.Kf1?! Nd5 19.Qd5 Rc2 20.Ne4 Re4 21.Qe4 Rb2=; A4) worse 18.Bf1 Nd5 19.Qd5 Rc2 20.Ne4 Re4 21.Qe4 Rb2=; A5) 18.Nf6 Qf6 19.Rf1=; B) 17...Nd5 18.Qd5 Rc2–/+) 17...Ng4? (better 17...Be6=) 18.Bg4 (18.Nd5 Ng6+–) 18...Bg4 19.Qd5 1–0. onur604 (2320) – nykajak (2050), lichess.org, 2020.

6.d4 e4 7.Nfd2 d5 8.c4 c6 9.Be2 a6 10.a4 ab5 11.ab5 cb5?? 12.Ra8+– bc4 13.Rb8 Qa5 14.0-0 Qa7 (14...Bd6 15.Bc3 Qa7 16.Rc8 Rc8 17.f3 ef3 18.Rf3+–) 15.Rc8 Rc8 16.Nc3 h6 (16...Qb6 17.Qc2+–) 17.Nd5 (17.f3 Qb6 18.Qc2 ef3 19.Bf3 Rd8+–) 17...Nd5 18.Bc4 (worse 18.Nc4 Qa2 19.Qb1 Qb1 20.Rb1 Kf8+–; 18.Ne4?! b5+–) 18...Nf6 (18...Rc4 19.Nc4 Qa2 20.Qe2+–) 19.Qb3 White plans d5 19...Rf8 20.d5 Bd6 (20...Qb8 21.Rd1+–) 21.Bf6 gf6 22.Ne4 Be7 (22...Be5 23.f4 f5 24.Ng3+–) 23.d6 Bd8 24.Qd1 (24.Qb5 Qa6+–) 24...f5 25.Qh5 fe4 26.Qg6 Kh8 27.Qh6 Kg8 28.Qg6 Kh8 29.Bf7 Rf7 30.Qf7 Qa5 31.d7 (31.Rb1 b5 32.Qe8 Kg7 33.Qe4 Qb6+–) 31...b5 32.f3 Qb6 33.Qe8 (33.fe4 Qh6 34.Qe8 Kh7 35.Rf7 Qg7 36.Qd8 Qf7 37.Qh4 Kg7 38.d8Q Qe6 39.Qdh8 Kg6 40.Q8h7) 33...Kg7 34.Qe4 (34.fe4 Bf6 35.e5 Qe3 36.Kh1 Qb3 37.ef6 Kh6 38.Qh8 Kg6 39.Qg7 Kh5 40.Rf5 Kh4 41.Qg5) 34...b4 (34...Qd6 35.Qg4 Kf8 36.Qf5 Bf6 37.Qg6+–) 35.f4 (35.Rb1 Qc7 36.Qg4 Kh7+–) 35...b3 36.Rf3 b2 37.Rg3 Kf8 38.Qe8 1–0. DEFFM – WinningWays, freechess.org, 2020.

6.Be2 b6 7.0-0 Bb7 8.c4 Nbd7 9.d4 ed4 10.ed4 d5 11.Ne5 Ne5 (11...Ne4 12.Nc3 Ne5 13.de5 Nc3 14.Bc3+=) 12.de5 Ne4 13.Nc3 (13.cd5 Qd5 14.Qd5 Bd5=) 13...Nc3 (13...Ba3 14.Qc2 Nc3 15.Qc3 Bb2 16.Qb2 dc4 17.Bc4=) 14.Bc3 dc4 (14...a6 15.a4 ab5 16.ab5 Ra1 17.Qa1=) 15.Bc4+= Qd1 (15...a6 16.e6 f6 17.a4+=) 16.Rad1 Rfd8 17.e6 (17.Rfe1 Kf8+=) 17...f6 (17...fe6 18.Be6 Kf8 19.Bd7+=) 18.Rd7 (18.Rfe1 Kf8+–) 18...Rd7 19.ed7 Kf8 20.Re1 (20.Rd1 Rd8+–) 20...Rd8+= 21.Be6 c6 22.a4 a6 (22...Bc5 23.Bf5+=) 23.ba6+– Ba6 24.g3 b5 (24...Bd6!?+=) 25.Ba5+– Ra8 26.ab5 Bb5 27.Bc7 Bd8 28.Bf4 Be7 29.h4 Ra7 (29...h6 30.Rd1+–) 30.Rd1 (30.Bf5 h5+–) 30...Ra8 31.Kg2 Bd8?? (31...Ba4 32.Ra1 g5+–) 32.Ra1!! Ra1 (32...Ra1 33.Bd6 Mate attack) 33.Bd6 (33.Bd6 Be7 34.d8Q) 1–0. onur604 (2320) – Shredderroy (1990), lichess.org, 2020.

6.Be2 b6 7.d4 ed4 8.Nd4= Bb7 9.Bf3 Bf3 10.Qf3 Nbd7 11.Nc6 Qe8 12.0-0 Ne5 13.Be5 de5 14.c4 (worse 14.Ne5 Qb5 15.Nc6 Bd6=+) 14...Bd6 15.Nc3 a5 (15...a6 16.e4+=) 16.Nd5 (16.e4 Nd7+/-) 16...Nd5+= 17.cd5 f6 (17...f5 18.Rfd1+=) 18.Qf5+/- g6 19.Qd3 e4 20.Qc4 f5 21.Nd4 Qe5 22.g3 f4 (22...a4 23.Ne6 Rfe8 24.Qc6+/-) 23.ef4+/- Rf4 24.Rae1 Rf6 (24...e3 25.fe3 (25.gf4?? Qf4 26.Nf3 ef2 27.Rf2 Qc4-+) 25...Rf1 26.Kf1+= (worse 26.Rf1 Qe3 27.Kh1 Qe4 28.Kg1 Re8-/+; 26.Qf1?! Bb4 27.Rd1 Qe3 28.Qf2 Qe8+=)) 25.Nc6 Qf5 26.Re4 Raf8 (26...Qf3 27.Re3 Qh5 28.Nd4+/-) 27.Ne7+- Be7 28.d6 Kh8 29.de7 Re8 30.Qd4 Kg8 31.Rf4 (31.Rf4 Rd6 32.Qa1+- (32.Rf5?! Rd4 33.Re5 Kf7+=)) 1-0. DEFFM – GuestDWJH, freechess.org, 2021.

6.Be2 c5 7.0-0= e4 8.Ne1 d5 9.c4 (9.f3!?=) 9...dc4 10.Na3 a6 (10...Be6 11.Bc4 Bc4 12.Nc4+=) 11.Bc4–/+ Be6 (11...ab5 12.Nb5 Bg4 13.f3=) 12.Qb3 (12.Be6 fe6 13.Qb3 Qd5+=) 12...Bc4 13.Nc4 ab5 14.Qb5 Qd7 15.a4 (15.Qd7 Nbd7 16.d3 b5–/+) 15...Rd8 (15...Qb5 16.ab5 Ra1 17.Ba1=) 16.f3 Qb5 17.ab5 Ra1 18.Ba1 Nbd7 19.Bf6 (19.fe4 Ne4 20.d3 Nd6 21.Nd6 Bd6=) 19...Nf6 (worse is 19...Bf6 20.fe4 Ne5 21.Ne5 Be5 22.Nf3+=) 20.Nc2 (20.fe4 Ne4 21.d3 Nc3+=) 20...g5 (20...Rd3 21.Ra1+=) 21.Ra1 (21.b6 Rd3=) 21...Kg7 (21...Rd3 22.Ra7 Rd7 23.fe4 Ne4 24.d3 Rd3 25.g4–/+) 22.Ra7= Rd7 23.Kf2 (23.b6 h5=) 23...Bd6 24.h3 (24.Nd6 Rd6 25.Ke2 Rb6=) 24...h5 Black intends g4 (24...Bb8 25.Ra2+=) 25.Ke2 Bb8 26.b6 (26.Ra8 Bg3=) 26...g4 (26...Ba7 27.ba7 Rd8 28.fe4–/+) 27.fg4 (27.Ra5 Rd5=) 27...hg4+= 28.hg4 (28.Ra8 Bg3+=) 28...Ng4 29.Na1 (29.Ra5!? Bd6 30.Nd6 Rd6 31.Rc5 Rb6 32.Rf5=) 29...Ba7–/+ 30.ba7 Rd8 31.Nb6 Ne5 (better is 31...Kg6+/-) 32.Nb3?? (32.a8Q Ra8 33.Na8 Nd3+/-) 32...Nd3?? (32...c4 33.Nd4+=) 33.Kd1 (33.a8Q Ra8 34.Na8 b5+=) 33...Rh8 (33...c4 34.Nd4 Rh8 35.Kc2+=) 34.Kc2?? (better is 34.a8Q Ra8 35.Na8+=) 34...c4–/+ 35.Nd4 Kf6 (better is 35...c3!?+=) 36.Kc3 Ke7 37.a8Q (37.g4+/-) 37...Ra8+– 38.Na8 Kd6 39.Kc4 (39.Nb6 Kc5 40.Nc4 b5 41.Nb5 Kb5 42.Nd6 Kc6 43.Ne4 Ne1+–) 39...Ne1 (39...Nb2 40.Kc3 Nd3 41.Nb6+–) 40.Nb6 (40.Nf5 Ke5 41.g4 Nd3+–) 40...Ng2 41.Nb5 (41.Nd5 Ke5+–) 41...Ke6 42.Kc5 (42.Nc7 Kf5+–) 42...f5 (42...Ke5 43.Nd6 f5 44.Nbc4 (44.Nb7 Ne3 45.de3 Ke6+–) 44...Ke6 45.Nb7+–) 43.Nd4 (43.Nd6!? Ne1 44.Nb7 Nd3 45.Kc4 Kf6+–) 43...Kf6 44.Nc4 (44.Nd7 Ke7 45.Ne5 Kf6+–) 44...Nh4 (44...f4 45.Kd5 b5 46.Nb5+–) 45.Kb6 (45.Nd6 Ke5+–) 45...Nf3 46.Ne2 (46.Nd6 Nd4 47.ed4 f4 48.Kb7 Ke7 49.Ne4 Ke6+–) 46...Ne5 47.Ne5 Ke5 48.Nf4 Kd6 49.Kb7 Kd7 (49...Ke5 50.Kc6+–) 50.Kb6 Kd6 51.Kb5 (51.d4 ed3 52.Nd3 Kd5+–) 51...Ke7 (51...Ke5 52.Kc5+–) 52.Kc5 Kf6 53.Kd6 Kg7 (53...Kg5 54.d4 ed3 55.Nd3+–) 54.Ke6 (54.Ke6 Kh6 55.Kf5+–) 1–0. Nemec,Zdenek (1700) – Herrchen,Ralf (1880), PCM–2004–G11, 2004.

6.Be2 c5 7.c4 e4 8.Ng5 h6 (8...d5 9.d4–/+) 9.Nh3=+ Bh3 10.gh3 Nbd7 (10...d5!?–/+) 11.Nc3 Re8 12.Qc2 Bf8 13.0-0 Nb6 14.f3 d5 15.cd5 Nbd5 (15...ef3!? 16.Rf3 Nfd5 (worse 16...Nbd5 17.Nd5 Nd5 18.Bc4+–) 17.Nd5 Qd5= (worse 17...Nd5 18.Bc4+–)) 16.Ne4 Ne4 17.fe4 (17.fe4 Nb6 18.Rf5+–) 1–0. onur604 (2315) – Fronso (2075), lichess.org, 2020.

6.Be2 Bd7 7.c4 c6 8.a4 cb5 9.ab5 b6 (9...e4 10.Nd4=) 10.d3 (10.0-0 a6+=) 10...Qc7 11.Nbd2 Bg4 (11...a6 12.d4 e4 13.Ng5+=) 12.h3 (12.d4 e4 13.Ng5 Be2 14.Qe2 d5=) 12...Bh5 (12...Be6 13.Ng5+=) 13.g4 Bg6 14.Nh4 Nbd7 (14...a5 15.Bf3 Ra7 16.Ng6 fg6 17.h4+/-) 15.g5+/- Ne8 16.Ng6 fg6 17.Bf3 Rc8 18.Bd5 Kh8 19.h4 Nc5 20.Ke2 (20.Qe2 Bd8+–) 20...Qd7+/- 21.f3 (21.Qg1 Qf5 22.e4 Qd7+–) 21...Nc7 (21...a5!?+/-) 22.Bc6 (22.Ra7 Qf5 23.Qb1 Nd5+/-) 22...Qe6. Mensch – Mensch, Chess Game, 2016.

6.Be2 e4 7.Nd4 c5 8.Nb3 Be6 9.c4 Nbd7 10.a4 (10.Qc2 d5+=) 10...Nb6 11.Qc2 d5 12.cd5 Qd5 13.Na5 Qg5 14.g3 Nbd5 15.Nb7 Nb4 16.Qd1 Nd3 (16...Bg4 17.0-0+=) 17.Bd3+= ed3 18.0-0 0–1. Florea,Dorina (1860) – Cmilyte,Viktorija (2495), Mamaia ROM, Team Ch (w), 2013.

6.Be2 Re8 7.0-0 h6 8.c4 Bf5 9.d4 e4 10.Nfd2 Bf8 (10...a6 11.Nc3 ab5 12.cb5=) 11.Qb3 Nbd7 12.Nc3 c6 13.a4 (13.f3 ef3 14.Bf3 Re3 15.Bc6 bc6 16.Rf5 cb5 17.Rb5 Nb6=) 13...h5 (13...Qa5 14.Qc2=) 14.a5 c5 15.a6 b6 16.d5 g6 17.Qc2 Bg7 18.Rad1 Nf8 19.Rfe1 N8h7 20.h3 Ng5 21.Rc1 Qd7 22.h4 Ngh7 23.Nf1 (23.Na4 Ng4=+) 23...Bg4 (23...g5 24.Ng3 gh4 25.Nf5 Qf5 26.f4=+) 24.Nh2 (24.Ng3 Be2 25.Qe2 Qg4 26.Qg4 Ng4=) 24...Be2=+ 25.Ne2 Ng4 26.Bg7 Kg7 27.Nf4 Re7 28.Nf1 Rae8 29.f3 ef3 30.gf3 Ne5 31.Qg2 Kh8 32.Ng3 (32.Kh1 g5 33.hg5 Rg8=+) 32...Rg8=+ 33.Kf2 Ree8 (33...g5 34.hg5 h4 35.Rh1 hg3 36.Qg3=) 34.Rc3 (34.Ne4 Qe7 35.Qg3 Nf3 36.Nd6 Ne1 37.Ne8 Re8 38.Ke1 Nf6-/+) 34...Nf6 (34...g5 35.hg5 h4-/+ (35...Ng5? 36.Rh1 Nef3 37.Nfh5+-)) 35.e4= Qe7 36.Qh3 Nh7 37.Nge2 Qf6 38.Qh2 Re7 39.Rd1 Rge8 40.Rg1?? (40.Kg2 Rg8=) 40...Rg8?? (better 40...Ng4! 41.Rg4 hg4-+) 41.Rg2 Ree8 42.Qg3 Rg7 0-1. DEFFM – GuestLSVG, freechess.org, 2021.

6.Be2 Re8 7.a4 a6 8.Nc3 ab5 9.ab5 Ra1 10.Qa1 Nbd7 11.0-0 Nb6 12.d3 c6 13.h3 Nbd5 (13...Qc7 14.Qa5+=) 14.Nd5= Nd5 15.c4 Nf6 16.bc6 bc6 17.Bc3 c5 18.Rb1 Qd7 19.Rb8 Bb7 20.Re8 Qe8 21.Qa7 Qc6 22.Qb8 Bf8 23.Ne1 h6 (23...Bc8!?=) 24.Bf3+/- d5 (24...e4!? 25.Bf6 ef3+/-) 25.Be5 Qa6? (better is 25...Nd7 26.Qa7 Qa6+–) 26.Bf6 gf6 27.Bd5 Bd5 28.cd5 Kg7 29.Qg3 Kh7 30.Nf3?? (better is 30.Qc7 Kg7 31.e4+–) 30...Bd6–/+ 31.Qe5?? (better is 31.Ne5–/+) 31...Be5 (31...Be5 32.Ne5 fe5-+) 0–1. GuestPLVL – GuestHYKT, freechess.org, 2017.

6.Be2 Re8 7.d4 e4 8.Nfd2 Bf8 (8...a6 9.c4=) 9.c4 g6 10.Nc3 h5 11.0-0 Bf5 12.a4 Nbd7 13.a5 a6 14.Qb3 Qc8 (14...c5 15.Nd5=) 15.Nd5+= White plans b6 15...Nd5 16.cd5 Nf6 17.b6 cb6 18.Rfc1 Qd8 19.ab6 Rb8 20.Rc7 Nh7 21.Ba3 h4 22.Bb4 (22.h3 Qg5 23.Kh1 Nf6+/-) 22...h3+= 23.g3 Nf6 24.Rac1 Bg4 25.Bg4 Ng4 26.Qd1 Qg5 27.Nc4 Qf5 28.Qe2 Red8 29.Na5 Rd7 (29...Nf6 30.Nb7 Rd7 31.Nd6 Qd5 32.Rc8 Rb6 33.Nb5=) 30.Rd7 (better 30.Rf1!?+=) 30...Qd7=+ 31.Rc7 Qa4 32.Be1 (32.Nb7?? Qb4 33.Rc1 f5 34.Qa6 Rb7-+) 32...Qa1 (better 32...Nf6!? 33.Rb7 Rb7 34.Nb7 Nd5=+) 33.Rb7+= (worse 33.Nb7 Nf6 34.Qf1 Nd5=) 33...Rb7 34.Nb7 Qb1 35.Na5 Qb6? (35...Nf6 36.b7 Nh7+=) 36.Qg4 Qb1 37.Kf1 (better 37.Qe2!? Kg7+-) 37...Qb5 38.Kg1 Qb1 39.Qe2 f5 (39...Kg7 40.Kf1+-) 40.Nc6 (40.Kf1 g5+-) 40...g5 41.Kf1 Qb5 (41...a5+-) 42.Qb5 ab5 43.Na7 Kf7 (43...b4 44.Bb4 Kf7 45.g4+-) 44.Nb5 Ke8 45.Bb4 Kd7 (45...Kf7 46.Bd6 Bh6 47.g4 fg4 48.Nc3+-) 46.g4! fg4 47.Nc3 1-0. DEFFM – GuestMQTJ, freechess.org, 2021.

6.Be2 Bg4 7.0-0 Nbd7 8.d4 c6 9.de5 Ne5 (9...de5!? 10.Ne5 Ne5 11.Be5 Be2 12.Qe2 Qd5=) 10.Ne5+= Be2 11.Qe2 de5 12.bc6 bc6 13.Be5 Qd5 14.f4 Ne4 15.Rd1 Qe6 16.Nd2 Nd2 17.Rd2 Bf6 (17...Rad8 18.Rd3+=) 18.Rd6 (better 18.Bf6 Qf6 19.Rad1+/-) 18...Qf5? (better 18...Qe7+=) 19.Bf6+- Qf6?? (19...gf6 20.Rc6 Rac8 21.Rc8 Rc8+-) 20.Rf6 (20.Rf6 gf6 21.Qg4 Kh8 22.Rd1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Be2 a6

7.a4 ab5 8.ab5 Ra1 9.Ba1 c6 10.d4 e4 11.Nfd2 Qa5 12.Nc3 d5 13.0-0 Be6 14.Nb3 Qa7 15.Bb2 Nbd7 16.Qa1 Ra8 17.Qa7 Ra7 18.Ra1 Ra1 19.Ba1 Nb6 (19...Nb8 20.Nc5 Bc5 21.dc5=) 20.Na5 cb5 21.Nb5 Bc8 22.Na7 Bb4 (22...Bg4 23.Bg4 Ng4 24.h3+=) 23.Nc8+/- Ba5 24.Nd6 Kf8 25.Nb7 Bb4 26.c3 Ba3 27.Na5 Ke7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.a4 ab5 8.ab5 Ra1 9.Ba1 Nbd7 10.0-0 Nb6 11.c4 Be6 12.d3 e4 13.Nfd2 ed3 14.Bd3 Nfd7 15.Qc2 g6 16.Ne4 f5= 17.Ng3 Nc5 18.Be2 Bf6 19.Nd2 f4 20.ef4 Ba1 21.Ra1 Qf6 22.Re1 Qf4 23.Bf3 Nc4–/+ 24.Re6 Nd2 25.Re7 Nf3-+ (25...Nf3 26.gf3 Rf7-+) 0–1. spblex (2545) – taxista (2440), net–chess.com, 2009.

7.a4 c6 8.d4 Nbd7 9.0-0 e4 10.Nfd2 Re8 11.c4 d5 (11...ab5!? 12.ab5 Ra1 13.Ba1 cb5=) 12.Nc3+= ab5 13.ab5 cb5 1-0. DEFFM – GuestPLQJ, freechess.org, 2021.

7.a4 e4 8.Nd4 ab5 9.ab5 Ra1 10.Ba1=.

7.a4 e4 8.Nd4 c5 9.Nb3 (9.bc6 bc6 10.0-0 d5=) 9...ab5 10.ab5 Ra1 11.Ba1 Nbd7 (11...Be6 12.0-0+=) 12.c4 d5 13.cd5 Nd5 14.Qc2 (14.d3 N7f6=) 14...N7f6+= 15.Nc5? (better is 15.Bf6 Nf6 16.0-0+= (16.Nc5? Qc7-+)) 15...Qc7-+ 16.Bf6 (16.Bd4 b6 17.Nc3 Bc5 18.Nd5 Nd5 19.Qe4 Bb7 20.Bc5 Qc5-+) 16...Nf6 (16...Bc5?! 17.Ba1 Bf5 18.Qb2+=) 17.Nc3 (17.d4 ed3! 18.Bd3 Bc5-+) 17...Qc5 18.0-0 Bf5 19.Qb2 Rc8 (19...Qe5 20.f3-+) 20.Ra1 (20.f3 Qe5-+) 20...Nd5 21.Na4 (21.Ra4 Nb6 22.Re4 Be4 23.Ne4 Qc1 24.Qc1 Rc1 25.Bf1 f5-+) 21...Qc2 (21...Qd6 22.Rc1-+) 22.Qe5 (22.f3 Bb4 23.Qc2 Rc2-+) 22...Be6 (22...Bf6 23.Qf5 Ba1 24.Qd5 Qa4 25.g3-+) 23.h3 (23.Qb2-+) 23...Bf6 (23...Bf6 24.Qg3 Ba1-+) 0–1. DEFFM – GuestDHLK, freechess.org, 2016.

7.a4 e4 8.Nd4 d5 9.c4 (9.f3 ab5 10.ab5 Ra1 11.Ba1 c5 12.bc6 bc6 13.fe4 de4=) 9...dc4 10.0-0 ab5 11.ab5 Ra1 12.Ba1 Nbd7 (12...Qd5 13.Qa4=+) 13.Bc4= Bd6 (13...Ne5 14.Be2=) 14.f4 (14.f3!?=) 14...Nb6=+ 15.Be2 Qe7 (15...Nbd5 16.Qa4=+) 16.Nc3 Bd7 17.Qe1 Ba3 (17...Bc5 18.Nb3 Bb4 19.Qg3=) 18.Qg3= Kh8 (18...Ra8 19.Nc2 Kh8 20.Na3 Ra3 21.Qg5=) 19.d3 ed3 20.Bd3 Rg8 21.Nc2 (21.Re1 Bc5=) 21...Bc5 Attacks the backward pawn on e3 22.h3 (22.Rd1 Be6=) 22...Be6 23.Re1 Bb3 (23...Rd8 24.Nd4=+) 24.Nd4 Bc4 (24...Bd4 25.ed4 Qd6 26.Ne4 Ne4 27.Be4=) 25.Nf5 Qf8 (25...Qd7 26.Bb1 Bd3 27.Rd1 Qf5 28.Bd3=) 26.Bc2 (26.Bb1 Qa8 27.Ne4 Qa1 28.Nc5 Qa5=) 26...Be6 27.Nd4 (27.Qg5 Nc4 28.Ne4 Bf5 29.Qf5 Ne3 (29...Be3? 30.Kh1 Qc8 31.Ng5+–) 30.Qc5 Qc5 31.Nc5 Nc2=+) 27...Bd4 28.ed4 Bc4 (28...Qd6 29.Ne4 Ne4 30.Be4=) 29.Ne4 (29.Qg5 Qd8 30.Qc5 Re8 31.Re8 Qe8=) 29...Qd8 (29...Bb5 30.Nf6 gf6 31.Qh4+=) 30.Nf6 (30.Qh4 Ne4 31.Qd8 Rd8 32.Be4 Re8=) 30...Qf6 31.f5 (31.Re5 Nd7 32.Rg5 Ra8=) 31...Nd5=+ 32.Be4 Qb6 33.Bd5 Bd5 34.Qd3 Qe6?? (better 34...Qf6=) 35.fe6+– fe6 36.Rf1 c6 37.b6 Ra8 38.Qa3! Re8 (38...Ra3 39.Rf8 Mate attack) 39.Rf8 Rf8 40.Qf8 1–0. DEFFM – GuestDRNH, freechess.org, 2020.

7.a4 Be6 8.c4 Nbd7 9.0-0 ab5 10.ab5 Ra1 11.Ba1 Qa8 12.Bb2 (12.Nc3 Nb6 13.d3 Qc8=) 12...Nb6 13.Qc2 Qa4 c4 draws heavy fire 14.Qa4 Na4 15.Ba3 Ra8 16.Rc1 Bf5 (16...Kf8 17.d4 e4 18.Nfd2=) 17.d3 (17.Ne5 Bb1 18.Rb1 Nc3 19.dc3 Ra3=) 17...e4=+ 18.Ne1 ed3 19.Bd3 Bd3 20.Nd3 Ne4 21.f3 Nec5 (21...Ng5 22.Nf4=) 22.Nc5 Nc5 23.Bc5 dc5 24.Nc3 Bd6 25.f4 f5 26.Kf2 Kf7 27.Kf3 Ra3 28.Nd5 (28.g4 g6+=) 28...c6= 29.bc6 bc6 30.Nc3 Be7 31.Rc2 Bf6 32.Ne2 (better 32.Nb1!? Ra1 33.Nd2=) 32...Bd4–/+ 33.g3 Re3 34.Kg2 h6 35.Rd2 Re4 36.Rc2 g5 37.fg5 hg5 38.Kf3 Re3 39.Kg2 Kf6 40.Ng1 Re1 41.Nf3 Rd1 42.Rd2 (42.h3 g4 43.hg4 fg4–/+) 42...Rc1-+ 43.Nd4 cd4 44.Rd4 Ke5 45.Rd8 g4 46.Re8 Kf6 47.Re2 (47.Rf8 Kg6–/+) 47...Rc4 48.h3 gh3 49.Kh3 Rc3 50.Kg2 c5 51.Kf2 (51.Re8 c4-+) 51...c4 52.Re8 Rd3 53.Rc8 Rd4 (53...c3 54.Re8-+) 54.Rc5 Kg5 55.Kf3 Re4 56.Kf2 Kf6 57.Kf3 Ke6 58.Kf2 Kd6 (58...Rg4!?-+) 59.Rf5–/+ c3 60.Rf3? (better 60.Ra5–/+) 60...Rc4-+ 61.Rd3 Ke5 62.Rd1 Ke4 (better 62...c2 63.Rc1 Kd4-+) 63.Ke2–/+ Ra4 64.Rd8 Ra1 65.Re8 Kd4 66.Rd8 Kc4 0–1. Petrushin,Maxim – Sukhorukov,Ana (2020), Maestro Open, Berdsk RUS, 2008.

7.a4 Bf5 8.0-0 Nbd7 9.d3 e4 (9...c6 10.Nbd2=) 10.Nd4 Bg6 11.Nd2 ed3 12.cd3 Nc5 13.N2b3 Nb3 14.Qb3 d5 15.Rfd1 Bd6 (15...Re8 16.Rdc1=) 16.Bf3 Qd7 17.g3 (17.Nc2 Be7=) 17...c6 (17...c5 18.bc6 bc6 19.Nc6 Qc6 20.Bf6 gf6 21.Bd5+= (worse is 21.Qd5 Qd5 22.Bd5 Rab8+=)) 18.Rac1 (18.bc6 bc6 19.Nc6 Qc6 20.Bf6 gf6 21.Bd5 Qd7 22.Ba8 Ra8+=) 18...Rfc8 (18...ab5 19.ab5 Rfc8 20.Bg2=) 19.b6 (19.bc6!? bc6 20.Nc6 Rc6 21.Rc6 Qc6 22.Bf6 gf6 23.Bd5+/-) 19...a5 20.Bc3 Qe7 21.Ra1 (21.Bg2 Ra6=) 21...Bc5 22.Qb2 Nd7 (22...Re8!?+=) 23.Nb3= Bb6 24.Bg7 f6 25.Bh6 Ne5 26.Be2 Kf7 (26...Bc7 27.Bf4=) 27.Nd4 Ba7 28.f4 (28.Rab1!?+=) 28...Nd3= 29.Bd3? (29.Qd2 Bd4 30.ed4 Qb4=) 29...Qe3 30.Qf2?? (better is 30.Kg2 Bd4 31.Qb7 Qe7 32.Bg6 hg6 33.Qe7 Ke7 34.Rd4=) 30...Qf2-+ (30...Bd4?! 31.Bg6 Kg6 32.Rd4 Qf2 33.Kf2 Kh6 34.Rc1-+) 31.Kf2 Bd4 32.Ke2 Bd3 33.Kd3 Ba1 34.Ra1 Kg6 35.Rb1 Rab8 36.Kd4 -+. Starr,Albert Martin – Saguid,Vincent, San Francisco Bagby mem g/45, 2005.

7.a4 Bg4 8.c4 Nbd7 9.0-0 e4 10.Ng5 Be2 11.Qe2 h6+=.

7.a4 Bg4 8.c4 Nbd7 9.Nc3 Nc5 (9...e4 10.Nd4 Be2 11.Qe2 ab5 12.ab5 Ra1 13.Ba1=) 10.d4= ed4 11.Nd4 Be2 12.Nce2 Ng4 13.Nf4 (13.0-0!?=) 13...Ne5–/+ 14.Qc2 g5 15.Nd5 Ncd3 16.Ke2 Nb2 17.Qb2 c6 (worse is 17...Nc4 18.Qc3 Ne5 19.Qc7 Qc7 20.Nc7+/-) 18.Ne7 Qe7 19.Rhc1 f5 20.Nf3 (20.bc6 bc6 21.c5 d5=) 20...Ng6 (20...Nf3 21.gf3 f4 22.Rg1+=) 21.Qd4 (21.Kf1 f4 22.ef4 Nf4+=) 21...g4 22.Ng1 Rae8 23.Ra3 d5 (23...f4 24.c5 Qh4 25.Rf1 fe3 26.Re3 dc5 27.Qc4 Kg7 28.Qc3 Kh6 29.g3 Qh2 30.bc6 bc6 31.Qc5–/+) 24.Rd3 (24.Ra2 Qb4 25.Qd2 Qd6 26.bc6 bc6 27.cd5 Qh2+=) 24...Qd6 (24...Ne5!? 25.ba6 Nd3 26.Qd3 f4 27.cd5 fe3 28.fe3 Qf6–/+) 25.Kf1= Qh2 26.cd5 (26.bc6!? bc6 27.cd5=) 26...Re4+= 27.Qc5 Nh4 28.g3? (28.dc6 Qg2 29.Ke2–/+) 28...Nf3 (28...f4 29.gh4 (29.gf4?? Rff4 30.Rd2 Qg2 31.Ke1 Qg1 32.Ke2 Rf2 33.Kd3 Rd2 34.Kd2 Qg2 35.Kc3 ab5 36.ab5 Qe2-+) 29...fe3 30.Qf8 Kf8 31.Re3 Re3 32.fe3-+) 29.Nf3 (better is 29.dc6 bc6 30.bc6 Qg1 31.Ke2=) 29...gf3-+ 30.Ke1 Qg1 (better is 30...Ra4!? 31.Rdd1 Qg1 32.Kd2 Qf2 33.Kc3 ab5 34.Rc2 Qg3 35.Kb3-+) 31.Kd2 Qf2 32.Kc3 Ra4 (better is 32...cb5 33.ab5 b6-+) 33.dc6= Qa2 34.c7 Ra3 35.Kd4 Qb2 (better is 35...Rd3 36.Kd3 Rc8=) 36.Rdc3?? (36.Rcc3 Rc3 37.Rc3 Qd2 38.Rd3 Qb2 39.Qc3 Qb5 40.c8Q Rc8 41.Qc8 Kf7 42.Kc3 Qa5 43.Kb2 Qb4 44.Kc1+–) 36...Qd2 (better is 36...Ra4 37.Ke5 Re4 38.Kd6 Rf6 39.Kd7 Qd2 40.Kc8 b6-+) 37.Ke5= Re8?? (37...Rc3 38.Rc3 Re8 39.Kf6+= (worse is 39.Kf5 Qd7 40.Kf4 f2 41.Qg5 Kh8 42.Qf6 Kg8 43.Qg5 Kf8 44.Qh6 Kg8 45.Qg5=)) 38.Kf4?? (38.Kf6 Rc3 39.c8Q Rce3 (39...Rc8?? 40.Qc8 Rc8 41.Rc8 Qd8 42.Rd8) 40.ba6 R3e5–/+) 38...Ra4?? (better is 38...Rc3 39.Rc3 f2=) 39.Kf3+– Ra2 40.Qc4?? (better is 40.R3c2 Rc2 41.Rc2 Qd1 42.Kf2+–) 40...Kf8+= 41.Qc5 Kg8 42.R3c2 (42.Qf5 Qf2 43.Kg4 h5 44.Qh5 Re4 45.Kg5 Qg3 46.Kf5 Re5 47.Kf6 Qg7) 42...Rc2 43.Rc2 Qd1 44.Kg2 f4 (44...Qd7 45.c8Q Rc8 46.Qc8 Qc8 47.Rc8 Kf7 48.Rc7 Ke6 49.b6+–) 45.Qc4 (45.c8Q Qc2 46.Qc2 Rc8 47.Qc8 Kg7 48.Qb7 Kf6 49.ba6 fe3+–) 45...Kf8 (45...Kg7 46.c8Q Rc8 47.Qc8 Qd5 48.Kg1 Qd1 49.Kf2 fe3 50.Ke3 Qg1 51.Kf3 Qh1 52.Kf4 Qh6 53.Ke4 Qh1 54.Ke5 Qe1 55.Kf5 Qf1 56.Kg4 Qd1 57.Kh4 Qh1 58.Qh3 Qe4 59.Qg4 Qg4 60.Kg4 ab5 61.Rc7 Kg6 62.Rb7 Kf6+–) 46.Qf4 Kg8 (46...Ke7 47.Qe5 Kd7 48.Qe8 Ke8 49.c8Q Kf7 50.Qf5 Ke8 51.Qe6 Kf8 52.Rc8 Qd8 53.Rd8 Kg7 54.Rg8) 47.Qf5 White plans c8 47...Rf8 (47...Qc2 48.Qc2 ab5 49.c8Q Rc8 50.Qc8 Kg7 51.Qb7 Kg6 52.Qb5+–) 48.c8Q (48.c8Q Qc2 49.Qfc2 Rc8 50.Qc8 Kg7 51.Qb7 Kf6 52.ba6+–) 1–0. Leckebusch,Hans Peter (1875) – Kalkhoff,Thomas (1845), Ruhrgebiet VK3, 2005.

7.a4 Bg4 8.c4 Nbd7 9.h3 Bh5= 10.0-0 (10.d3 ab5 11.ab5 Ra1 12.Ba1 c6=) 10...ab5 (10...e4 11.Nd4 Be2 12.Qe2=) 11.ab5= Ra1 12.Ba1 Qb8 1–0. DEFFM – cyrilerameh, freechess.org, 2016.

7.ba6 Na6 8.0-0 Bg4 9.Nc3 Re8 10.Rb1 (10.h3 Bd7+=) 10...Nc5 (10...c6 11.Ba1 Qc7 12.h3 Bf3 13.Bf3–/+) 11.d4 ed4 12.Nd4 (12.Qd4 c6+=) 12...Be2 13.Qe2 Nfe4 (13...d5 14.Rfd1+=) 14.Ne4 Ne4 15.a3 Bf6 (15...d5 16.Qg4 Bf6 17.Rfd1+=) 16.Rfd1 Be5 17.Qg4 Ra4 18.Nf5 (better is 18.c4!?+=) 18...Nc3–/+ 19.f4 Nd1 20.Be5 g6 21.Bd4 Rd4! 22.Nd4 (22.ed4 Re1 Mate attack; 22.Nd4 Ne3 Combination) 22...Ne3 23.Qf3 c5 24.Nb5 Nc2 25.Qb7 Qa5 26.h3 Qd2 27.f5 (27.Qc6 Rb8 28.a4 d5-+ (28...Qf4?! 29.Qc7 Rf8 30.Nd6–/+)) 27...gf5 28.Qc6 Re6 29.Kh1 Ne3 30.Qf3 (30.Nc7 Re4 31.Rb8 Kg7 32.Ne8 Re8 33.Re8 Qd1 34.Kh2 Nf1 35.Kg1 Ng3 36.Kf2 f4 37.Rg8 Kg8 38.Qc8 Kg7 39.Qg4 Qg4 40.hg4 f5 41.gf5 c4-+) 30...Rg6 31.Rg1 d5 32.Na7 f4! 33.Nc8 (33.Qf4 Ng2 Deflection) 33...Kg7 34.Ne7 Re6 35.Nc8 Qd4 36.g3 fg3 37.Rg3 Kf8 38.Nb6 (38.Nd6 Rd6 39.Qe3 Qe3 40.Re3 d4-+) 38...c4 39.Nd7 Ke7 40.Nb8 Qd1 41.Qd1 Nd1 42.Rg1 (42.Rg8-+) 42...Ne3 43.Rg8 (43.a4 Rb6 44.a5 Rb8 45.a6-+) 43...c3 44.Rc8 Nc4 45.Rc7 Kd8 46.Nc6 Kc7 (46...Kc7 47.Nd4 Na3-+) 0–1. bambinik – Brunton, internet, 2001.

7.d4 e4 8.Nfd2 =+.

7.a4 Bd7

8.0-0 ab5 9.ab5 Ra1 10.Ba1 c6 11.c4 Qb6 12.Nc3 cb5 13.cb5 Be6 14.Ng5 Nd5 (better is 14...d5!?=) 15.Ne6+/- fe6 (15...Nc3 16.Bc3 fe6 17.Qb3+/-) 16.Qb3 (16.Nd5 ed5 17.Qb3 Kh8+–) 16...Qc5? (16...Nc7!?+=) 17.Bf3 (17.Nd5 Qd5 18.Bc4 Qe4 19.Be6 Kh8+–) 17...Rf3+/- 18.gf3 Kf7 (18...Nc7 19.b6 Nd5 20.Nd5 ed5 21.d4+–) 19.Kh1 (19.d4!? Qb4 20.Qb4 Nb4 21.de5 de5+–) 19...Nf6 20.Bb2 (20.Ne4 Qd5 21.Qd5 ed5 22.Ng5 Kg6+–) 20...d5+/- 21.Rc1 Qb4 22.Qc2 (22.Qb4 Bb4 23.Na4 Bd6+–) 22...Qh4 23.Kg2 Qg5 24.Kf1 Nbd7 25.Ne2 (25.Ra1 Qh4+/-) 25...Qh5+= 26.Ng1 Qh2 27.Ke2 (27.Qc7 Qh4 28.Qb7 Qb4+=) 27...e4 (27...Bc5!?+=) 28.Bf6+/- Nf6 29.fe4?? (29.Qc7 Qh1 30.b6+/- (30.Qb7?! ef3 31.Nf3 Qc1 32.Ne5 Kf8 33.Qb8 Ne8 34.Nd7 Kf7 35.Ne5 Kf6=)) 29...Ne4–/+ 30.Rf1 (30.d4 Qf2 31.Kd3 Qf5-+) 30...Ng3 31.Ke1 Nf1 32.Kf1 Qh5 33.Ke1 Qh2 (33...e5 34.d4–/+) 34.Kf1 Qh5 35.Ke1 Qh2 (35...e5 36.d4–/+) 36.Kf1 Bh4 37.d4 Qd6 (37...Bg3!?–/+) 38.Qh7= Bf6 39.Qh5 Kg8 (39...Ke7 40.Qe2=) 40.Nf3 (40.Qe8 Kh7+/-) 40...Qa3 (better is 40...Qd7!?+=) 41.Qe8+/- Kh7 42.Qh5 (42.Qe6 Qd3 43.Kg2 Qb5 44.Qf5 Kg8+/-) 42...Kg8+= 43.Qe8 Kh7 44.Qh5 (44.Qe6 Qd3 45.Kg2 Qb5 46.Qf5 Kg8+/-) 44...Kg8+= 45.Qe8 (45.Kg2 Qd6+=) 45...Kh7+/- 46.Qh5 (46.Qe6 Qd3 47.Kg2 Qb5 48.Qf5 Kg8+/-) 46...Kg8+= 47.Qe8 (better is 47.Kg2 Qf8 48.Ne5+=) 47...Qf8?? (47...Kh7 48.Qe6 Qd3 49.Kg2 Qb5 50.Qf5 Kg8 51.e4+/-) 48.Qd7?? (better is 48.Qe6 Qf7 49.Qc8 Kh7 50.Qf5 Kg8 51.Ne5 Be5 52.Qf7 Kf7 53.de5+–) 48...Qe7 49.Qc8 Kh7 (49...Kf7 50.Nd2=) 50.Ne5 (50.Ne1!?+/-) 50...Be5= 51.de5 Qf7 52.b6 Qf3 (better is 52...Qf5 53.Qc7 Qg4=) 53.Qe6+– Qd1 (53...Qe4 54.Kg1+–) 54.Kg2 Qb3? (54...Qb1+–) 55.Qf5 (55.Qf5 Kh6 56.e6+–) 1–0. GuestDZVC – GuestNTSM, freechess.org, 2017.

8.0-0 ab5 9.ab5 Ra1 10.Ba1 c6 11.c4 e4 12.Nd4 cb5 13.cb5 Qb6 14.Nc3 Be6 (14...d5 15.f3 Bd6 16.fe4 de4 17.Qc2+=) 15.Ne6 (15.d3 ed3 16.Qd3 d5+=) 15...fe6 16.Na4 (16.Na4 Qa5 17.Bg4 Qb5 18.Be6 Kh8 19.Bf6 Bf6 20.Nc3 Bc3 21.dc3+/-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

8.0-0 c6 9.c4 cb5 10.ab5 h6 11.d4+= e4 12.Nfd2 Bf5 13.Nc3 Nbd7 14.Qc2 ab5 15.Ra8 (worse 15.Nce4 Ne4 16.Ra8 Qa8 17.Ne4 bc4=+) 15...Qa8 16.Ra1 Qc8 (16...Qd8 17.Nb5 Qb6 18.d5+/-) 17.Nb5 (worse 17.Nce4 Ne4 18.Ne4 d5-/+) 17...d5 18.Nc3 (18.Ba3 Ba3 19.Ra3 Qc6+/-) 18...Nb6 (18...Qc7 19.Ra7+=) 19.Qb3 Nc4 20.Nd5! (20.Bc4?! dc4 21.Qb5 Qd7=) 20...Nd5 21.Bc4 (21.Nc4?! Be6=; 21.Qc4?! Qd7+=) 21...Nf6 22.Ra7 Ng4 23.Qb7 (23.Qb7 Qb7 24.Rb7+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

8.0-0 Re8=.

8.c4 ab5 9.ab5= Ra1 10.Ba1 c5 (10...c6 11.0-0=) 11.h3 (11.Nc3 Qc7=) 11...Be6 (11...Bf5 12.d4=) 12.d3 b6 (12...Nbd7 13.0-0=) 13.Nbd2 (13.Bc3 Qc7=) 13...Nbd7 (13...Bf5 14.0-0=) 14.0-0 Qa8 (14...Ne8 15.Bc3=) 15.Qc2 Qa3 (15...Bf5 16.Bc3+=) 16.Bb2 Qb4?? (better is 16...Qa8+=) 17.Bc3+– (17.Bc3 Qa3 18.Ra1 Qa1 19.Ba1+–) 1–0. DEFFM – Lobnya, freechess.org, 2016.

8.c4 e4 9.Nd4+=.

6.Be2 c6

7.a4 a5 8.0-0 Qb6 9.c4 Bd7 (9...e4 10.Nd4=) 10.c5 dc5 11.Ne5 Be6 12.Na3 Nbd7 (12...cb5 13.Bb5 Bd5 14.Nac4+=) 13.Nac4+= Bc4 14.Nc4 Qc7 15.bc6 Qc6 16.Bf3 Qc7 17.Qb3 Rab8 18.g3 Rfd8 19.Rac1 b6 20.d4 Qa7 21.Bc6 cd4 22.ed4 Bb4 23.d5 Nc5 24.Qf3 Nce4 25.Be5 Rbc8 26.Kg2 Ng5 (26...Be7!?+/-) 27.Qe3+- Nge4 28.Nb6 (28.Qb6?! Qe7 29.Qb7 Qb7 30.Bb7 Nd5 31.Bc8 Rc8 32.Na5 Rc1 33.Rc1 f6+-) 28...Bc5 (28...Re8 29.Bf6 (29.Nc8?! Qe3 30.fe3 Re5+-; 29.Be8 Re8 30.Rc7 Qa6 31.Bf6 Nf6+-) 29...Nf6 30.Nc8 Qe3 31.fe3 Rc8 32.Kf3+-) 29.Nc8 (29.Rc5?! Qb6 30.Rb5 Qe3 31.fe3 Nd7+-) 29...Be3 (29...Rc8 30.Qf4 Bd4+-) 30.Na7 Ba7 31.Bc7 Rc8 32.d6 Kf8 (32...Nc5+-) 33.d7 (33.d7 Nd7 34.Bd7 Rc7 35.Rc7+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.a4 Qa5 8.0-0= Bg4 (8...Re8 9.c4=) 9.c4 c5 (9...Nbd7 10.d3=) 10.h3 (10.d4 cd4 11.ed4 e4+=) 10...Be6 11.d3 h6 (11...Nbd7 12.Nc3=) 12.Nbd2 (12.Qd2 Qd2 13.Nbd2 a6=) 12...Qc7 (12...Nbd7 13.Qc2=) 13.Qc2 a6 (13...Nbd7 14.a5+=) 14.Rfc1 (14.d4 cd4 15.ed4 Nbd7+=) 14...ab5 (14...Nbd7 15.d4 cd4 16.ed4 ed4 17.Nd4+=) 15.ab5+= Nbd7 16.d4 cd4 (16...Ra1 17.Ra1 ed4 18.ed4=) 17.ed4+= Nb6 (17...ed4 18.Nd4 Nc5 19.Re1+=) 18.d5 (better is 18.de5!? Nfd7 19.ed6 Bd6 20.Qc3+/-) 18...Bd7 (18...Ra1 19.Ba1 Bd7 20.Bd3=) 19.Ra8 (19.Bd3 Ra1 20.Ra1 Re8+=) 19...Ra8 20.Ra1 (better is 20.Bd3=) 20...Ra1–/+ 21.Ba1 Nh5 (better is 21...Nfd5 22.Bd3 Nb4 23.Bh7 Kh8-+) 22.Ne5 de5 23.Bh5 Bg5 (23...Bb4 24.Ne4+=) 24.Nf3 (24.Ne4 Bf5 25.d6 Qc4 26.Qc4 Nc4 27.Be2 (27.Ng5?! hg5 28.Be2 Nd6+/-) 27...Be4 28.Bc4+–) 24...Qc4? (better is 24...Bf6=) 25.Bf7!+/- Kf7?? (better is 25...Kf8 26.Bg6 Qc2 27.Bc2 Bb5+/-) 26.Ne5+– (26.Ne5 Kf8 27.Nc4 Nd5 28.Qe4+–) 1–0. GuestVLLC – GuestHPYC, freechess.org, 2016.

7.a4 a6 8.0-0 ab5 9.ab5 Ra1 10.Ba1 Qb6 11.c4 cb5 12.cb5 Nd5 13.d4+= e4 14.Nfd2 f5?? (better 14...Bf5+=) 15.Qb3+- Be6 (15...Kh8 16.Qd5 Nd7 17.Qa2+-) 16.Bc4 1-0. DEFFM – GuestXNSR, freechess.org, 2021.

7.a4 a6 8.0-0 ab5 9.ab5 Ra1 10.Ba1 Qb6 11.c4 Bd7 12.Nc3 h6 13.d4+= 1-0. DEFFM – GuestRSMD, freechess.org, 2021.

7.a4 a6 8.0-0 Qb6 9.a5 (9.Nc3 h6=) 9...Qd8=+ 10.b6 Be6 (10...e4 11.Nd4=+) 11.Ng5 Bd7 12.d4 (12.Nc3 d5=) 12...e4= 13.Nd2 d5 14.c4 h6 15.Nh3 Be6 (better 15...Bh3!? 16.gh3 Qd7=) 16.Nf4+= 1-0. DEFFM – GuestCRMT, freechess.org, 2021.

7.a4 cb5 8.ab5 a6 9.c4 b6 10.0-0 Bb7 11.Nc3 ab5 12.Ra8 Ba8 13.cb5 e4 (13...Nbd7 14.d4+=) 14.Nd4+= Nfd7 (14...d5!?+=) 15.Qa1+– Bb7 16.Nf5 Bf6 (16...Nf6!?+–) 17.Nd6 Nc5 18.Nb7 Qd2? (18...Nb7 19.Ne4 Bb2 20.Qb2 Qe7+–) 19.Nc5 bc5 20.Rd1 Qc2 21.Bc4 Bc3 (21...Bh4 22.g3 Bf6+–) 22.Bc3 Qe2 (22...Rc8+–) 23.Be2 (23.Be2 Nd7 24.Bg7 Re8 25.Bh6 f6 26.Rd7 c4 27.Bc4 Kh8 28.Qf6) 1–0. DEFFM – GuestRen, freechess.org, 2019.

7.a4 cb5 8.ab5 Nbd7 9.d4 White fights for the Initiative 9...b6 (better 9...e4 10.Nfd2 d5=) 10.de5+– de5 11.Be5 (11.Ne5 Ne5 12.Be5 Qd1 13.Kd1 Rd8 14.Ke1 Bb7+–) 11...Ne5 12.Qd8 Bd8 (12...Rd8 13.Ne5 Bb7 14.Bf3+–) 13.Ne5 Be6 (13...Ne4 14.Bf3 f5 15.Ra4+–) 14.Bf3+– Rc8 (14...Nd5 15.Nc6+–) 15.Nc6 (15.Ra7?! Rc2 16.0-0 Rc5+–) 15...Bd5 (15...Rc7 16.Ra7 Ra7 17.Na7+–) 16.Bd5 Nd5 17.Ra7 Bf6 (17...Rc7 18.Ra6+–) 18.Rd7 Bc3 (18...Nc7 19.Na7+–) 19.Nc3 (19.Ke2 Nf6 20.Ra7 Be5 21.Ne5 Rc2 22.Nd2 Ne4+–) 19...Nc3 20.Ne7 Kh8 21.Nc8 Rc8 22.Rf7 Kg8 23.Rd7 Na4 (23...h6 24.h4+–) 24.Kd2 Nc5 25.Rd4 Ne6 (25...Kf7 26.Ra1+–) 26.Rd6 Rd8 (26...Nc5 27.Rb6 Ne4 28.Ke2 Nc3 29.Kd3+–) 27.Rd8 Nd8 28.Ra1 Ne6 29.Ra6 Kf7 (29...Nc5 30.Rb6 h6 31.Rc6+–) 30.Rb6 h5 (30...Nc5 31.Rc6 Nd7 32.Rc7+–) 31.Rb7 (31.Re6!? Ke6 32.h4 Kd5+–) 31...Kf6 32.b6 Nc5 33.Rc7 Ne4 (33...Na6 34.b7 Nc7 35.b8Q+–) 34.Ke2 Nd6 35.Rd7 Ke6 36.Rg7 Kf6 37.Rh7 (better 37.Rd7!? Ke5+–) 37...Ke5 38.b7 (better 38.Rh5 Ke6 39.Rh6 Kd7 40.Rd6 Kd6+–) 38...Nb7 39.Rb7 (39.Rb7 Kf6 40.Rh7+–) 1–0. GuestBCQJ – GuestXRNG, freechess.org, 2020.

7.a4 c5 8.d4 (8.0-0 Be6=) 8...ed4 (8...cd4 9.ed4 e4 10.Nfd2=) 9.ed4= b6 (9...d5 10.dc5 Bc5 11.0-0=) 10.0-0 Bb7 (10...d5 11.a5=) 11.c4 d5 12.Nbd2 Nbd7 13.Qb3 (13.Re1 Re8+=) 13...Qc7 (13...dc4 14.Bc4 cd4 15.Bd4+=) 14.Rac1 Rfe8 15.cd5 (15.Rfe1 a6=) 15...Bd5 16.Bc4 Qb7 (16...Qd6 17.Rfe1=) 17.Rfe1 Rad8 18.Re2 (18.dc5 Nc5 19.Qc2 Bc4 20.Nc4 Nd3–/+) 18...Bd6 19.Rce1 Re2 20.Re2 Qa8 (20...Rc8 21.Qd3=) 21.Bd5 (21.Qc2 Rc8=) 21...Qd5 22.Qd5 (22.Qc4 Bf4=) 22...Nd5 23.Nc4 Be7 (23...Bf4 24.Kf1=) 24.dc5 (24.Rd2 Kf8=) 24...Bc5 (24...Nc5 25.a5 Nd3 26.a6=) 25.Rd2 N7f6 (25...Nf4 26.Nfe5 Ng2 27.Kg2+– (27.Rd7?! Rd7 28.Nd7 Nf4+–)) 26.h3 (26.Bf6!? gf6 27.Ne3 Be3 28.fe3+–) 26...Rc8 (26...Ne4 27.Re2 f5 28.Nfe5=) 27.Nce5 Bb4 28.Nc6?? (better is 28.Re2+=) 28...Bd2-+ 29.Nd2 Rc7 30.Be5 Rd7 31.Nf3 (31.Nb8 Rd8–/+) 31...Ne7 (31...Ne4 32.Nfd4–/+) 32.Ncd4 (32.Bf6!? gf6 33.Kf1+=) 32...Ne4–/+ 33.Ne2? (33.Kf1 Nc5-+) 33...Rd3 (33...Rd1 34.Kh2 Nf2 35.Nc3-+) 34.Bb8 (34.Bd4-+) 34...Rd1 35.Kh2 Nf2 36.Ba7 Nd5 (36...Nf5 37.g4 Rd3 38.Ng5–/+) 37.Nfg1 (37.Bb8-+) 37...Ra1 38.Kg3 (38.Bb8 Ra4 39.Nf3 Ne4-+) 38...Nd3 (38...Ne4!? 39.Kf3 f5 40.g3-+) 39.Nf3 Ra4 40.Bb8 Ra2 41.Nfd4 g5 42.Kf3 Ra8 (42...h5 43.Ke4 N5b4 44.Bd6-+) 43.Bh2 (43.Ke4 N5b4 44.Bd6 Re8 45.Kf5 h6-+) 43...Re8 44.Nf5 (44.Bd6 h5 45.g3 g4 46.hg4 Re3 47.Kg2 hg4-+) 44...Ne1 45.Kf2 Nc2 (better is 45...Ng2!? 46.Nd6 Re3 47.Nd4-+) 46.Nd6 (46.Bd6 h5-+) 46...Re3 (46...Re6 47.Bg3-+) 47.Nc4 (47.Nf5 Re4-+) 47...Rb3 (47...Re4 48.Nd6 Re6 49.Bg3-+) 48.Nd6 Na3 (48...Rd3 49.Be5-+) 49.Nd4 Rb2 50.Kf3 Nc3 51.Be5 Rb1 52.N6f5 (52.Kg4 Nab5 53.N6b5 Nb5-+ (53...Rb5?! 54.Nb5 Nb5 55.Kg5+=)) 52...Ncb5 53.Nc6 f6 (better is 53...Nc2!? 54.Kg4 Ne1 55.g3-+) 54.Bf6 Kf7 55.Bg5? (55.Be5-+) 55...Kg6 56.Kg4 Threatening mate... how? 56...h5 (56...h5 57.Kh4 Kf5 58.Kh5 Nc4-+) 0–1. Luettig,Hendrik – Stritzel,Frank, Pinneberg–ch op, 1996.

7.a4 Qc7 8.0-0 Bf5 9.c4 Nbd7 10.Nc3 d5 11.cd5 cd5 12.Rc1 (12.Qb3 e4 13.Nd4 Be6=) 12...Qb6 13.d3 Bd6 (13...Rac8 14.d4 e4 15.Ne5=) 14.Qd2 (14.d4 e4 15.Nd2 Rac8=) 14...Bb4 15.Qc2 e4 (15...Rac8 16.Qb3 Be7 17.d4=) 16.Nd4 (16.de4 de4 17.Nh4 Qe6+/-) 16...Bg6 (16...ed3 17.Bd3 Bd3 18.Qd3=) 17.Na2 (17.de4 de4 18.Rfd1 Rfd8=) 17...Bc5 (17...Bd6+=) 18.Nb3 (18.de4 Ne4 19.Qd1 Rac8=) 18...Rac8 (better is 18...Be3!? 19.a5 Qe6–/+) 19.Qd2 Qd8 (19...Be7 20.de4 de4 21.Bd4=) 20.d4 (better is 20.de4!? Be4 21.f3+=) 20...Bd6= 21.Na5 Qb6 22.Bc3 Rb8 (22...Ba3 23.Ra1=) 23.Nb3+= Qd8 24.Bb4 Qe7 25.Bd6 Qd6 26.a5 (26.Qb4 Qe6+=) 26...Rfc8 (26...Bh5 27.Bh5 Nh5 28.Qb4+=) 27.Rc8 Rc8 28.Rc1 Qf8 29.Rc2 Rc2 (29...h6 30.Rc8 Qc8 31.Qc3 Qc3 32.Nc3+=) 30.Qc2 Qd8 (30...Bf5 31.Qc7 Qb8 32.Qb8 Nb8 33.Nc5+/-) 31.Qc3 Bf5 32.Qb4 (32.Nb4 g6+/-) 32...Qc7= 33.Nc3 Nf8 (33...Bg4 34.Nc1=) 34.Qc5 Qc5? (better is 34...Qb8+=) 35.dc5+– (35.Nc5?! Bc8+=) 35...Bd7 36.Nd4 Ne6 37.Ne6 (better is 37.b6 ab6 38.Ne6 Be6 39.cb6+–) 37...fe6? (37...Be6 38.b6 ab6 39.cb6+–) 38.a6 (better is 38.b6 ab6 39.cb6+–) 38...b6?? (better is 38...ba6 39.c6 Bc8+=) 39.cb6+– ab6 40.a7 1–0. Nikolic,Jovane (1690) – Ogashawara,Gabriel Hideki, Championship Paulista Absoluto, 2013.

7.a4 Nbd7 8.d4 Qc7 9.0-0 Re8 10.c4 e4 11.Nfd2 d5 12.c5 b6 13.Qc2 (13.cb6 ab6 14.bc6 Qc6=) 13...bc5 14.bc6 Qc6 15.Bb5 Qc7 16.dc5 a6 (16...Ng4 17.g3-/+) 17.Bd7=+ Bd7 18.Bd4 (18.Rc1 Rac8 19.Qd1 Ng4-/+) 18...Rec8 (18...Ng4 19.g3-/+) 19.Rc1=+ Ng4 20.f4 ef3 21.Nf3 (21.Nf3 Rab8 Combination; 21.gf3 Qh2 Mate attack) 21...g6 (21...Rab8 22.Nbd2=) 22.Qc3 Bf5 23.h3 Be4? (better 23...Nh6!?+=) 24.hg4+- Bf3 25.Be5 Qc5 (25...Qa7!? 26.gf3 Rc5+/-) 26.gf3+- Qb6 (better 26...Bg5 27.f4 Qf8+-) 27.Qc8 Rc8 28.Rc8 Bf8 29.Bd4 Qe6 (29...Qb7 30.Rc2+-) 30.Rd8 h5 (30...Qc6 31.Nd2 Qc2 32.Nf1+-) 31.Bc5 hg4 (31...Qc6 32.Ba3 (32.Bf8 Qc1 33.Kg2 Qb2 34.Nd2 Qd2 35.Kg3 h4 36.Kh3 Qf2 37.Be7 Kh7 38.Bh4 Qf3 39.Kh2 Qe2 40.Kg3 Qe3 41.Kg2 Qe4 42.Kh3 Qf3 43.Kh2 Qf4 44.Kg2 Qg4 45.Bg3 Qe4 46.Kh2 f5=) 32...Qe6 33.Rf8 (33.Bf8?! Qe3 34.Kg2 Qe2 35.Kg1 Qe3 36.Kg2 Qe2 37.Kg1 Qe3=) 33...Kg7 34.Kf2+-) 32.Nd2 (32.Bf8 Qe3 33.Kf1 Qc1 34.Kg2 gf3 35.Kf3 Qh1 36.Ke3 Qe1 37.Kd3 Qg3 38.Ke2 Qe5 39.Kd3 Qa1 40.Bc5 Kh7=; 32.Rf8 Kg7 33.Nd2 d4+-) 32...gf3 (32...d4 33.Ra3 (33.Bf8?! Qe3 34.Kh1 Kh7+-) 33...gf3 34.Nf3 (34.Bf8 Qg4 35.Kf1 Qg2 36.Ke1 Qe2) 34...de3 35.Re3 (35.Bf8?! Qg4 36.Kh2 Qf4 37.Kg2 Qg4 38.Kh2 Qf4 39.Kg2 Qg4 40.Kh2=) 35...Qg4 36.Kf2 Qa4 37.Rf8 Kg7 38.Rc8+-) 33.Rf8 (33.Bf8?? Qg4 34.Kf1 Qg2 35.Ke1 Qe2) 33...Kg7 34.Nf3 Qg4 (34...Qf5 35.Nd4 Qd3 36.Re8+-) 35.Kf2 Qc4 (35...Qf5 36.Kg3 g5+-) 36.Rf7! Kg8 (36...Kf7 37.Ne5 Double attack) 37.Rf8 (better 37.Rc7 Qb3 38.Bd4 Qc4+-) 37...Kg7 38.Nd4 Qc3 39.Ne6 (39.Ne6 Kh6 40.Rh1) 1-0. onur604 (2320) - NiGko (2195), Casual Rapid game, lichess.org, 2021.

7.a4 Nbd7 8.d4 e4 9.Nfd2 d5 10.c4 Nb6 (10...cb5 11.cb5 a6 12.Ba3=) 11.Qc2 (11.c5 Nbd7=) 11...Bf5 12.0-0 Qd7 (12...cb5 13.ab5 dc4 14.Nc4 Nc4 15.Bc4=) 13.c5 Nc8 14.Nc3 Bd8 15.a5 Ne7 16.a6 Bg4 (16...Rb8 17.ab7 Rb7 18.bc6 Nc6 19.Bb5+=) 17.ab7 Qb7 18.bc6 Nc6 (better 18...Qc7!?+=) 19.Bg4+- Nb4? (better 19...Ng4 20.Nd5 Qb8+-) 20.Qd1 Nd3 21.Bc1 Ng4 22.Qg4 Nc1 (22...f5 23.Qh5+-) 23.Rac1 Qb2 (23...f5 24.Qe2+-) 24.Ndb1 f5 25.Qg3 1-0. DEFFM – GuestYDCR, freechess.org, 2021.

7.a4 Be6 8.0-0=+.

7.d4 e4 8.Nfd2 cb5 9.Bb5 a6+=.

6.Be2 Nbd7

7.0-0 a6=.

7.0-0 b6 8.a4 Bb7 9.c4 Re8 10.d3 e4 11.Nd4 ed3 12.Bd3 Nc5 13.Bc2 Bf8 14.Nd2 g6 (14...a6 15.N2b3=) 15.N2b3 White plans a5 15...Bg7 16.a5 Rb8 17.a6 Ba8 18.Rb1 Qd7 19.Nc1 Ng4 20.Nd3 Ne5 21.Ne5 Be5 22.Ba4 (22.Qe2 c6+=) 22...Na4= 23.Qa4 Bd4 24.ed4?? (better is 24.Bd4 Bg2 25.Kg2 Qg4 26.Kh1 Qf3 27.Kg1 Qg4 28.Kh1 Qf3 29.Kg1 Qg4 30.Kh1=) 24...Bg2!-+ 25.Kg2 (25.Kg2 Qg4 Combination) 25...Qg4= 26.Kh1 Qf3 27.Kg1 Qg4 28.Kh1 Qf3 29.Kg1 Re4 30.Rfe1 (30.h3 Qh3 31.Qa3 Rg4 32.Qg3 Rg3 33.fg3 Qg3 34.Kh1-+) 30...Qg4 (30...Rg4 31.Kf1 Rg2 32.Re2 Rh2 33.Ke1 Qd3 34.Kf1 Rh1 35.Kg2 Qh3) 31.Kh1 Qf3 32.Kg1 Rg4 33.Kf1 Qd3 (33...Qd3 34.Re2 Qb1 35.Re1 Qb2-+) 0–1. Mallmann,Bernd (1970) – Ruff,Maximilian (1650), Rhein Main op, 2009.

7.0-0 b6 8.c4 Bb7 9.Nc3 Nc5 10.d4 ed4 11.ed4 Nce4 12.Ne4 Ne4 13.Bd3 Ng5 (13...d5!?+=) 14.d5+/- 1-0. DEFFM – GuestTLMP, freechess.org, 2021.

7.d4 ed4 8.ed4 Re8 9.0-0 c5 10.c4 a6 11.a4 b6 12.d5 Nf8 13.Bd3 Bg4 14.h3 Bh5 15.Nbd2 N6d7 16.Qc2 h6 17.Rfe1 Qc7 18.Bc3 Bf6 19.Re8 Re8 20.ba6 Bc3 21.Qc3 Qa7? (better is 21...Bf3!? 22.Nf3 Qa7+=) 22.Nh4+– Ne5 23.Bc2 (23.Nf5 f6 24.Ne4 Bg6 25.Ned6 Rd8+–) 23...Qa6 24.f4 Ned7 (24...Nfg6!? 25.Bg6 Ng6+/-) 25.Nf5+– f6 26.Nd6 Re7 27.g4 Bf7 28.Nf7 (28.a5!? Qa8+–) 28...Kf7 29.Nf3 Qb7 30.Re1 Re1 31.Qe1 Qc7 32.Qe4 Nb8 33.Nh4 g5?? (better is 33...Na6+–) 34.Nf5 gf4 (34...Qd7 35.Nh6 Kg7 36.fg5 Kh8 37.gf6 Qh7+–) 35.Nh6 Kg7 36.Nf5 (better is 36.d6 Qd7 37.Qe7 Qe7 38.de7+–) 36...Kg8 37.d6 Qd7 (37...Qh7 38.Ne7 Kh8 39.Qd5+–) 38.Qf4 (better is 38.Qe7 Qe7 39.Nh6 Kg7 40.de7 Nbd7+–) 38...Qe6 (38...Nc6 39.Qh6 Nd4 40.Be4+–) 39.Qe4 (better is 39.Be4 Qe5 40.Bd5 Ne6 41.Qe5 fe5 42.Be6 Kf8 43.g5+–) 39...Qd7 (39...Kf7+–) 40.Qe7 Qe7 41.de7 (better is 41.Nh6 Kg7 42.de7+–) 41...Nc6 (41...Kf7 42.ef8B Kf8+–) 42.e8Q Ne5 43.Qe7 Nf3 (43...Nf7 44.Qf6 Ne6 45.g5 Kf8 46.g6 Neg5 47.g7 Kg8 48.Ne7) 44.Kf2 Ng5 (44...Ne6 45.Nh6 Kh8 46.Qh7) 45.Qg7 1–0. Makhanov,Amirkhan – He,Anthony, Wch U08 Maribor, 2012.

7.d4 e4=+ 8.Nfd2 a6 9.ba6 ba6 10.c4=.

7.d4 e4=+ 8.Nfd2 d5 9.0-0 Bd6 (9...a6 10.ba6 b6 11.c4=) 10.c4 c6 11.c5 (11.bc6 bc6 12.Ba3 Ba3 13.Na3 Qa5=) 11...Bc7 (11...Bb8 12.bc6 Qc7 13.g3 Qc6 14.Nc3=) 12.Nc3 Re8 (12...Bb8 13.f3=) 13.Qa4 (13.bc6 bc6 14.Qa4 Re6=) 13...Nf8 (13...Bb8 14.Rfb1=) 14.bc6 bc6 15.Rab1 (15.Rfe1 Qd7=) 15...Bd7 (15...Qd7 16.a3=) 16.Ba3 Ne6 17.Rb7 Qe7 (17...a5 18.Rfb1=) 18.Ra7+= Ra7 19.Qa7 Bc8 (19...Qf8 20.Qa4+=) 20.Qa4 (20.Kh1 Nd7+=) 20...Bb7 21.Rb1 (21.Qc2 Ra8 22.Bb2 Ba6+=) 21...Ra8 22.Qb3 (22.Rb7? Ra4 23.Na4 Bh2 24.Kh2 Qb7-+) 22...Ba6 23.Ba6 Ra6 24.Bb4 Ng4 (24...Ne8 25.Qd1+=) 25.h3= Nh6 (better 25...Nf6!?=) 26.Nd5+– cd5 27.Qd5 f5 (better 27...Bd8!?+–) 28.Qc4+– Ra8 29.d5 1–0. GuestBVRD – GuestBNND, freechess.org, 2018.

7.d4 e4=+ 8.Nfd2 d5 9.c4 Bb4 10.Qb3 Bd2 11.Nd2 (worse 11.Kd2 dc4 12.Qc4 Nb6=+) 11...c6 12.a4 a5 (12...dc4 13.Nc4 Re8 14.0-0+=) 13.0-0 Nb6 14.Ba3 Re8 15.Rab1 dc4 16.Nc4 Be6 17.bc6 Nc4 18.cb7 Rb8? (18...Nd2 19.ba8R Qa8+/- (19...Bb3?? 20.Rd8 Rd8 21.Rb2+-)) 19.Bc4+- Nd5 (19...Bc4 20.Qc4 Qd7 21.Qb5+-) 20.Bc5 Nb4 21.Bb4 ab4 22.Be6 fe6 (22...Re6 23.Qb4 Rc6 24.Rfc1+-) 23.Qb4 Qe7 (23...e5 24.a5 ed4+-) 24.a5 Qb4 (24...Qf7 25.a6 e5 26.a7 ed4 27.Rfc1 Rb7 28.Qb7 de3 29.a8Q ef2 30.Kf1+-) 25.Rb4 e5 26.a6 ed4 27.a7 Rbd8 (27...d3+-) 28.b8Q 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.d4 e4=+ 8.Nfd2 d5 9.c4 dc4 10.Nc3 Nb6=.

6.Be2 Be6

7.0-0 c6 8.Ng5 h6 9.Ne6 fe6 10.a4 a5 11.d4 ed4 12.ed4 d5 13.Bd3 Nbd7 (13...cb5!? 14.ab5 Bd6+=) 14.Qe2+– (14.Qe2 Kh8 15.Qe6+–) 1–0. GuestFKFW – GuestPPRD, freechess.org, 2020.

7.0-0 h6 8.d3 c6 9.a4 cb5 10.ab5 a5 11.Nbd2 b6 12.c4 Nbd7 13.Re1 Nc5 (13...Qc7!?=) 14.d4+/- ed4 15.ed4 (15.Bd4?! d5=) 15...Nce4 16.d5 Nd2 17.de6 Nf3 18.Bf3 Rc8 19.Bc6 fe6 20.Re6 Kh8 21.Ba3 Qc7 22.Bd6 (22.Qe2 Rf7+–) 22...Bd6+/- 23.Qd6 Qf7 24.f3 (24.Bf3 Rc4 25.Re7 Qg6 26.Qb6 a4+–) 24...Rcd8 25.Qe7 Qg6 (25...Kg8 26.Qf7 Kf7 27.Re5+/-) 26.Be4 (26.Rd6!? Rb8 27.Qe3+–) 26...Qg5+/- 27.Rb6?? (better is 27.Kh1+/-) 27...Qc5?? (better is 27...Qe3 28.Kh1 Qb6-+) 28.Kf1 (better is 28.Qc5 Nd7 29.Qe3 Nb6 30.Qb6+–) 28...Qb6 (better is 28...Qe7 29.Rf6 Qf6 30.Rb1-+) 29.Bc6 Qd4 30.Rc1 Qd3 (30...Ng4 31.Qf8 Rf8-+) 31.Kg1 Qd2 32.Rf1 (32.Qe1-+) 32...Qd4 33.Kh1 Qc4 34.Re1 (34.Ra1 a4-+) 34...Rde8! 35.Qe8 (35.Be8 Re8 Decoy) 35...Re8 (better is 35...Ne8 36.h3 Nd6 37.Rb1-+) 36.Re8 Ne8 (36...Ne8 37.h4 a4-+) 0–1. Starr,Albert Martin – Russell,Joe, San Francisco MI Fall op, 2005.

7.a4 Nbd7 8.0-0 Re8 9.c4 c5 (9...a6 10.Ng5=) 10.Qc2 Nf8 11.Ng5 Bg4 12.f3 Bh5 13.Nc3 Bg6 14.d3 b6 15.Nge4 Be4 16.fe4 Qc7 17.a5 Qd7 (17...ba5 18.Qa4+=) 18.ab6+/- ab6 19.Ra6 Reb8 20.Rfa1 Qb7 21.Qa4 Ra6 22.ba6 Qc8 23.a7 Ra8 24.Qa6 Qa6? (better 24...Qc7+/-) 25.Ra6+- Bd8 26.Nb5 N6d7? (26...Ne8+-) 27.Nd6 Bc7 28.Nb5 Ne6 29.Bg4 (29.Nc7?! Nc7 30.Ra2 b5+-) 29...Ndf8 (29...Bd8+-) 30.Be6 Ne6 31.Nc7 Nc7 32.Rb6 Ra7 (32...h6 33.Rb8 Kh7 34.Ra8 Na8 35.Be5 Kg6+-) 33.Rb8 (33.Rb8 Ne8 34.Re8) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

7.c4 Nbd7 8.0-0 b6 (8...a6 9.ba6 ba6 10.Nc3=) 9.Nc3 (9.d4 e4 10.Ng5 a6+=) 9...Nc5 (9...a6 10.Ng5=) 10.d3 (10.d4 Ncd7+=) 10...a5 (10...a6 11.d4 Ncd7 12.e4+=) 11.a4 (11.d4 Ncd7+=) 11...Nfd7 (11...Rc8 12.d4 Ncd7 13.Ng5+=) 12.d4 ed4 (12...Nb7 13.Bd3+/-) 13.ed4+/- (worse is 13.Qd4 Nb3 14.Qd1 Na1–/+) 13...Nb7 14.Qc2 Nf6 15.h3 (15.Ng5 Qd7+/-) 15...Bd7 (15...d5 16.Ng5 Nd6 17.Ne6 fe6 18.cd5 Nd5 19.Bg4+/-) 16.Rfe1 Re8 (16...c6 17.Bd3+/-) 17.Bd3 h6 (17...Rc8 18.Ne4 Nh5 19.Ned2+/-) 18.Rad1 (18.Re2 c6+/-) 18...c5 (18...c6 19.Ne4+=) 19.d5 Qc8 (19...Qc7 20.Re2+/-) 20.Ne4 (20.Re3 Bd8+/-) 20...Ne4 (20...Qd8 21.Rd2+/-) 21.Be4 Qd8 22.Bf5 Bf5 23.Qf5 Qc8 (23...Qc7 24.Rd3 Qc8 25.Qc8 Rac8 26.Rde3+–) 24.Qf4 Qd7 25.Qg3 (25.Re4 Bf8+/-) 25...Bf8 26.Nh2 Qf5 27.Ng4 Qg6 28.Ba1 (28.Kh2 Kh7+/-) 28...h5+= 29.Nh2 (29.Ne3 Qg3 30.fg3 Re4=) 29...Qg3 (29...Qc2 30.Qh4=) 30.fg3+= g6 (30...Re7 31.Re7 Be7 32.Re1+=) 31.Nf3 (31.g4 Bg7+=) 31...Bg7= 32.Bg7 Kg7 33.Ng5 (33.Kf2 Kf6+=) 33...Re5 34.h4 Rae8 35.Rf1 Attacking the backward pawn on f7 (35.Re5 Re5 36.Kf2 Nd8=) 35...R8e7 (35...R5e7 36.Nf3=) 36.Rd2 (36.Nf3 Re4 37.Rde1 Nd8=) 36...Nd8+= 37.Rdf2 Re1 (37...f5 38.Kh2+=) 38.Kh2 (better is 38.Ne6! R1e6 39.de6 fe6 40.Rf4+=) 38...Rf1–/+ 39.Rf1 f6 40.Nf3 (40.Nh3!?+=) 40...Nf7–/+ 41.Re1? (better is 41.Nd2!?–/+) 41...Re1-+ 42.Ne1 Ne5 0–1. GuestHTNP – GuestKDDB, freechess.org, 2016.

6.Be2 h6

7.0-0 Bf5 8.a4 Nbd7 9.d4 e4 10.Nfd2 d5 11.c4 c6 12.Nc3 Bd6 13.Qb3 Bg4 (13...Qc7 14.h3=) 14.c5 (better 14.Bg4!? Ng4 15.h3+/- (15.cd5?? Bh2 16.Kh1 Qh4 17.Nf3 ef3 18.gf3 Bd6 19.Kg1 Qh2)) 14...Bb8 15.a5 a6 16.b6 Bh2?? (better 16...Be2 17.Ne2 Qe7=) 17.Kh2+- Be2 18.Ne2 Ng4 19.Kh3 f5 (19...Qg5 20.Ng3+-) 20.f3 Qg5 21.Nf4 (21.fg4?! Qg4 22.Kh2 Qe2+=) 21...Ndf6? (better 21...ef3 22.Nf3 Qf6+-) 22.fg4 fg4 (22...Qg4 23.Kh2+-) 23.Kh2 Qh4 24.Kg1 g3 25.Nh3 g5 26.Rae1 (26.Rf5!? g4 27.Nf4 Qh2 28.Kf1 Nh5 29.Rh5 Qh5+-) 26...g4 27.Rf4 Nh5 28.Nf1 Nf4 29.Nf4 Rf5 30.Bc3 Raf8 31.Bd2 (31.Rb1 Rf4 32.ef4 Rf4+-) 31...Rh5 32.Nh5 Rf1 (32...Qh5 33.Ng3 Qh4 34.Ne4+-) 33.Kf1 Qh1 (33...Qh5 34.Ke2 Qh2+-) 34.Ke2 Qg2 (34...Qh5 35.Qd1 Qg5 36.Rh1+-) 35.Kd1 Qf3 (35...Qh2 36.Nf4 g2 37.Ne2+-) 36.Kc1 g2 37.Nf4 h5 38.Nd5! Qf7 (38...cd5 39.Qd5 Double attack) 39.Nf6 (39.Nf6 Kf8 40.Qf7 Kf7 41.d5 Kf6 42.dc6 bc6 43.b7+-) 1-0. DEFFM – GuestYHLR, freechess.org, 2021.

7.0-0 Bf5 8.Nc3 a6=.

7.0-0 Bf5 8.d4 e4 9.Nfd2 d5 10.c4 c6 (10...a6 11.ba6 Na6 12.Nc3=) 11.a4 (11.Nc3 cb5 12.cb5 a6=) 11...a5 (11...dc4 12.Nc3=) 12.Nc3 Re8 (12...Nbd7 13.c5+=) 13.Qb3 (13.c5 Nbd7+=) 13...Qd6 (13...Bb4 14.cd5 cd5 15.Ba3+=) 14.Ba3 Qe6 (14...Qd7 15.cd5 cd5 16.Be7 Re7 17.Rfc1+=) 15.cd5 (15.bc6 bc6 16.Qb7 Nbd7 17.Be7 Reb8+–) 15...cd5 16.Nd5! Qd5 (16...Qd5 17.Bc4 Decoy; 16...Nd5 17.Bc4 Decoy) 17.Bc4 Qd8 18.Bf7 Kh8 (18...Kh7 19.Be8 Ba3 20.Qa3 Qe8 21.Rac1+–) 19.Be8 Qe8 (19...Ba3 20.Qa3 Qe8 21.Nc4+–) 20.Be7 Qe7 21.Nc4 (21.f3 ef3 22.Rf3 Bg4+–) 21...Nbd7 22.Qa3 Qe8 (22...Qf7 23.Nd6 Qg6 A) worse 24.Nb7 Bh3 25.g3 Qh5–/+ (25...Bf1?! 26.Rf1 Nb6 27.Nc5=+); B) 24.Nf5?! Qf5 25.Rac1 Nd5+=; C) 24.f3+–) 23.Qd6 (23.Nd6 Qg6 24.f3 b6+–) 23...Qg6 (23...Be6 24.Rac1+–) 24.Rfc1 (better 24.Rac1+–) 24...Nh5? (better 24...Kh7+–) 25.Qg6+– Bg6 26.Ne5 Ne5 27.de5 Re8 28.Rc7 1–0. DEFFM – GuestSQKQ, freechess.org, 2020.

7.0-0 Nh7 8.c4 b6 9.d4 ed4 10.Nd4 Bb7 11.Bf3 Bf3 12.Qf3 (worse 12.gf3 Bf6=) 12...Nd7 13.Nc6 Qe8 14.Bd4 (14.Nc3 Bf6+=) 14...Bf6 15.Nc3 Ne5 16.Be5 Be5 17.Ne5 Qe5 18.Nd5 Rfc8 (18...Ng5 19.Qh5 Ne6 20.Qe5 de5 21.f4+=) 19.Rad1 (19.Nc7 Ng5 20.Qd5 Qd5 21.Nd5 Rc4+=) 19...Ng5 20.Qg4 Ne6?? (better 20...Ne4+=) 21.f4+– Qc3 1–0. GuestYMLD – GuestQLXM, freechess.org, 2020.

5.Nf3 a6

6.a4 0-0 7.Be2 ab5 8.ab5 Ra1 9.Ba1 Nbd7 10.d4 e4 11.Nfd2 d5 12.c4 c6 (12...dc4 13.Nc4 Nb6 14.Nb6 cb6 15.Nc3=) 13.Nc3= Re8 14.Qb3 Nf8 15.0-0 Ng6 16.bc6 bc6 17.cd5 cd5 18.Bb5 Rf8 19.Rb1 Bd6 20.g3 (worse 20.Nd5 Nd5 21.Ne4 Bf5-+) 20...Be6 21.Bb2 h5 22.Ba3 h4 23.Bd6 Qd6 24.Na4 (24.Qb4 Qb4 25.Rb4 Rc8=) 24...hg3 25.hg3 Nh5 26.Qb4 Qd8 27.Qc5 Qg5 (better 27...Nf6+=) 28.Nf1 (better 28.Ne4 Qh6 29.Be2+=) 28...Nh4=+ 29.Be2 Nf3 30.Bf3 ef3 31.Qd6 Qf5 32.Nd2 Qc2 33.Qb4 Bf5 (33...Ra8 34.Nc5 Qf5=) 34.Nc5= Ra8 35.Qb7 Ra2 (better 35...Qa2 36.e4 Re8 37.Nf3 de4=) 36.Qd5+/- Qd2?? (better 36...Nf6 37.Qf3 g6+/-) 37.Rb8 Kh7 38.Qf5 g6 39.Qf7 Kh6 (39...Ng7 40.Qg8 Kh6 41.Qh8 Kg5 42.Qh4 Kf5 43.Rf8) 40.Rh8 Kg5 41.Ne4 Kg4 1-0. onur604 (2320) - guruofexodus (2175), Casual Rapid game, lichess.org, 2021.

6.c4 0-0 (6...ab5 7.cb5 Be6 8.Ng5 Ba2 9.Nf7 Kf7 10.Nc3 d5 11.Ra2 Ra2+=) 7.d4 (7.Be2 ab5 8.cb5 Be6+= 9.Nc3 Nbd7 10.0-0 d5 11.Qc2 Bg4+=) 7...e4 8.Nfd2 ab5 9.cb5 d5 10.Be2 Be6 (10...Nbd7 11.0-0 Bd6+=) 11.a4 (11.0-0 Nbd7+=) 11...c6 (11...Nbd7-/+) 12.Nc3 (12.Ba3 Ba3 13.Ra3 Qd6+=) 12...Nbd7 (12...Bb4 13.0-0+=) 13.0-0 (13.bc6 bc6 14.0-0 Qc7=) 13...Qc7 14.Qc2 (14.bc6 bc6 15.Ba3 Ba3 16.Ra3 Rfc8=) 14...Rfc8 (14...c5 15.dc5 Nc5 16.Rfc1+=) 15.Rfc1 (15.bc6 Qc6 16.Qb3 Qb6=) 15...c5+= 16.dc5 Nc5 (16...Qc5 17.Ba3 Qa3 18.Ra3 Ba3 19.Rb1=) 17.Bf1 (17.h3 Bd6+=) 17...Ng4-/+ 18.g3 Ne5 19.Na2 (19.Qd1 Qd6-/+) 19...Qd6 (19...Bd6 20.Bd4-+) 20.Ba3-/+ Qd7 21.Bc5 Bc5 22.Nc3 (22.Qb2 Qd6-/+) 22...Bb4 (better is 22...d4!? 23.Nce4 de3 24.Nc5 ed2 25.Nd7 dc1Q 26.Rc1 Rc2 27.Rc2 Nd7-+) 23.Qb2+= Ba5 24.Nb3 Nf3 25.Kh1 Bh3 (better is 25...Bd8-/+) 26.Bg2? (better is 26.Be2 Bc3 27.Rc3 Rc3 28.Qc3-/+) 26...Bg2-+ 27.Kg2 Ne1! 28.Kf1? (28.Re1 Bc3) 28...Nd3 29.Qd2 Nc1 (29...Qh3 30.Ke2 Bb4 31.Nd4 Qh2 32.Qd3 ed3 33.Kd3 Qf2 34.Nde2-+) 30.Na5 (30.Rc1 Bc3 31.Rc3 Rc3 32.Qc3 Ra4 33.Kg2-+) 30...Nd3 31.Nb3 Rc4 32.Nd4 Rac8 33.Nce2 Qh3 34.Kg1 Ne5 35.f4 ef3 36.Nf4 Qd7 37.a5 g5 38.Nh5 Qh3 39.Nf6 Kg7 40.Nd5 Rc1! (40...Rc1 41.Rc1 Rc1 42.Qc1 Qg2) 0–1. Agrest,Roman (2160) – Di Cio,E (1775), III EUICC Arvier ITA, 2007.

6.d4 e4 7.Nfd2 0-0 A) 8.d5 ab5 (8...Nd5 9.Ne4 Be6 10.c4 Nf6 11.Ng5 Nbd7 12.Be2=) 9.Bb5 c6 10.dc6 bc6 11.Be2 Qb6 (11...Be6+= 12.0-0+=) 12.Nb3+=; B) 8.ba6 Na6 9.c4 Bf5 10.Nc3 Qd7 11.Qb1 Rfe8 12.Be2=.

5.Nf3 c6

6.a4 0-0 7.Be2 Bd7 8.0-0 cb5 9.ab5 Qb6 10.c4 a6 11.Nc3 ab5?? (11...Be6 12.Ng5=) 12.cb5 (better is 12.Ra8 e4 13.c5 Qc5 14.Nd4+–) 12...h6?? (better is 12...Ra1 13.Qa1 Bg4=) 13.Ra8+– 1–0. GuestRXPW – avmax, freechess.org, 2016.

6.a4 cb5 7.ab5 Qb6 8.Be2 Bg4 9.c4 Nbd7 10.0-0 Rc8 11.d4 Bf3 12.Bf3 Rc4 13.Be2 Rc8 14.Bc3 0-0?? (better 14...ed4 15.Bd4 Nc5+=) 15.Ba5+- 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.a4 Bd7 7.Be2 0-0 8.0-0 h6 9.d4 e4 10.Nfd2 d5 11.c4 Bf5 12.Nc3 Nbd7 13.a5 a6 14.cd5 (14.bc6 bc6 15.Ba3 Ba3 16.Ra3 Qc7+=) 14...cd5 (14...cb5 15.f3 ef3 16.Bf3= (worse 16.Nf3 b4 17.Nb1 Nd5=+)) 15.Qb3+= Be6 16.f4 g6 17.ba6 ba6 18.Ba3 Ba3 19.Qa3 Nb8 20.Rab1 Nc6 Attacking the isolated pawn on a5 (20...Bg4 21.Rfc1+=) 21.Rb6+/- The isolani on a6 becomes a target 21...Qc7 (21...Qc8!?+/-) 22.Ba6+- Nd7 (22...Rfb8 23.Rfb1 Nd8 24.Nb5+-) 23.Nb5 Qd8 24.Rc6 Nb8 25.Rd6 Qe8?? (better 25...Qe7+-) 26.Nc7 (26.Nc7 Qe7 27.Na8 Na6 28.Ra1+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nf3 Bd7

6.a4 a6 7.c4 c5 (7...0-0 8.Nc3+=) 8.Nc3= ab5 (8...0-0 9.Be2=) 9.ab5 Ra1 10.Qa1 0-0 (10...Bf5 11.d3=) 11.h3 (11.Be2 Bg4=) 11...Be6 12.Be2 Qc7 (12...Nbd7 13.d3=) 13.0-0 (13.d3 Nbd7=) 13...Nbd7 (13...h6 14.d3=) 14.d3 Nb6 15.Qd1 d5 (15...Nfd7 16.Qb3=) 16.Ng5 (16.cd5 Nfd5 17.Nd5 Nd5 18.Be5 Qd7+/-) 16...d4 (16...Bd7!?=) 17.Ne6+= fe6 18.ed4 (18.Na4!?+=) 18...ed4+= 19.Na4 (19.Nb1+=) 19...Ra8 (19...Na4!? 20.Qa4 Qe5+=) 20.Nb6= Qb6 21.Qb3 (21.Re1 Bd6=) 21...Nd7 (21...Bd6 22.Bf3=) 22.Ra1 Rf8 (22...Ra1 23.Ba1 Bd6 24.Bf3=) 23.Bf3 Ne5 (23...Bh4 24.Re1=) 24.Be4 Bh4 (24...Nf7 25.Qa3 Nd6 26.Bf3+=) 25.g3+= Bg5? (25...Bd8+=) 26.Bc1?? (better is 26.f4 Qc7 27.b6+/- (27.fg5? Ng4 28.Bh7 Kh7-+)) 26...Bc1= 27.Rc1 Nf3 (27...Nd7 28.Re1=) 28.Bf3 Rf3 29.Qd1 Rf6 (29...Rf8 30.Qe2=) 30.Ra1+= h6 31.Ra8 Kh7 (31...Rf8!? 32.Rf8 Kf8+=) 32.Qg4 (32.Qe1+/-) 32...Qd6 (better is 32...Qc7!? 33.Qe4 g6+–) 33.Qe4+– Rg6 34.Qb7 Qe5 35.Qe4 Qg5 (35...Qe4 36.de4 Rf6+–) 36.b6 Qc1 37.Kg2 e5 38.b7 Qg1 39.Kg1 h5 40.Rh8! Kh8 (40...Kh8 41.Qg6) 41.Qg6 h4 (41...e4 42.b8Q) 42.b8Q 1–0. DEFFM – GuestHCGY, freechess.org, 2016.

6.a4 c6 7.c4 (7.Be2 e4 8.Nd4 c5=) 7...cb5 (7...e4 8.Nd4+=) 8.ab5= 0-0 (8...e4 9.Nd4 d5 10.Nc3+=) 9.Be2 (9.Nc3 Be6=) 9...Qc7 (9...a6 10.Nc3=) 10.0-0 (10.d4 e4 11.Nfd2 Be6+=) 10...Be6 (10...e4 11.Nd4=) 11.d3 Nbd7 12.Nbd2 (12.Ng5 a6=) 12...d5 (12...a6 13.Ng5=) 13.Ng5 (13.Rc1 Qb8+=) 13...Bf5= 14.Ngf3 h6 (14...Be6 15.Rc1 Qb8 16.Ng5+=) 15.Qa4 (15.cd5!? Rfd8 16.e4+/-) 15...Nb6 (15...Nc5 16.Qc2 e4 17.de4 de4 18.Be5=) 16.Qa5 (better is 16.Qb3 e4 17.Be5=) 16...Rfc8? (16...e4 17.de4 de4+= (worse is 17...Be4 18.Rfc1+/-)) 17.Be5+/- Bd6 (17...Qd7 18.cd5 Nfd5 19.e4+/-) 18.Bf6+– gf6 19.Rfc1 Qe7 20.Nd4 (20.d4 dc4 21.Nc4 Bb4+–) 20...Bg6 (20...Be6 21.cd5 Nd5 22.Rc8 Bc8 23.N2f3+–) 21.Qa2 1–0. DEFFM – GuestLPHV, freechess.org, 2016.

6.Be2 0-0 7.0-0 c6 8.a4 c5 9.c4 Be6 10.Ng5 Bd7 11.Qc2 h6 12.Ne4 Be6 13.Nf6 Bf6 14.Bf3 Qc7 15.Nc3 (15.Qe4 Nd7 16.Qb7 Rac8+/-) 15...Nd7 (15...Bc4!? 16.Rfb1 Be6=) 16.Nd5+/- Bd5 17.Bd5 Rad8 18.a5 b6 19.Bc3 Rfe8 20.ab6 Nb6 21.Bc6 Re7 22.Qe4 Rc8 23.Ra5 Qd8 24.Rfa1 Rcc7 25.f4 ef4 (25...Qb8 26.Qd3 e4 27.Be4 Bc3 28.dc3 Qe8+/-) 26.Bf6 gf6 27.Qf4 Re5 (27...d5 28.cd5 Nd5 29.Qg4 (29.Qh6?! Nb4+-) 29...Kf8 30.Qf3+-) 28.Ra7 Ra7 29.Ra7 Kg7 30.Qg4 Rg5 31.Qe6 Qf8 (31...Qg8+-) 32.Be8 Re5 (32...Kh8 33.Rf7 Qf7 34.Bf7 Kg7+-) 33.Rf7 Qf7 34.Qf7 (34.Qf7 Kh8 35.Qf6 Kg8 36.Qg6 Kh8 37.Bf7 Nc4 38.Qh6) 1-0. DEFFM – GuestCRPK, freechess.org, 2021.

6.Be2 c6 7.a4 cb5 8.ab5 Qb6 9.c4 0-0 10.0-0 a6 11.Nc3 Ra7 12.d4+= ab5 (12...e4 13.Nd2 ab5 14.Qb3+–) 13.de5 (13.Ra7!? Qa7 14.de5 de5 15.Nb5 (worse 15.Ne5 bc4 16.Bc4 Qb6 17.Nd7 Qb2 18.Nf6 Bf6+=) 15...Bb5 16.cb5+–) 13...Ra1+= 14.Qa1 de5 15.cb5 e4 (15...Qe6 16.Qa7+–) 16.Ng5+– h6 (16...Bf5 17.Qa4+–) 17.Nge4 Ne4 18.Ne4 Bb5? (better 18...Qg6 19.Nc3 Bc5+–) 19.Bb5+– Qb5 20.Bg7 Rc8 (20...Qa6 21.Bf8 Bf8 22.Nf6 Kh8 23.Qc3+–) 21.Bh6 Bf8 (21...f6 22.Nf6 Kf7+–) 22.Nf6 Kh8 23.Nd7 Kh7 24.Nf8 Kh6 25.Qf6 Kh5 26.Qf7 Kh6 (26...Kg5 27.Qg6 Kh4 28.g3 Kh3 29.Qe6 Qf5 30.Qf5) 27.Qg6 1–0. onur604 (2320) – erikbryan (1970), lichess.org, 2020.

5.Nf3 Nbd7

6.d4 0-0 (6...e4 7.Nfd2=+) 7.Be2 (7.de5 de5 8.Ne5 (worse 8.Be5 Ne5 9.Ne5 Qd1 10.Kd1 Ne4=+) 8...Bb4 9.c3+=) 7...e4=+ 8.Nfd2 d5 (8...a6 9.ba6 ba6 10.c4=) 9.0-0 Bd6 (9...c6 10.c4=) 10.c4 c6 11.c5 (11.bc6 bc6 12.Ba3 Ba3 13.Na3 Qa5=) 11...Bc7 (11...Bb8 12.bc6 Qc7 13.g3 Qc6 14.Nc3=) 12.Nc3 h6 (12...Bb8 13.bc6 bc6 14.Rb1=) 13.a4 (13.bc6 bc6 14.Qa4 Nb8+=) 13...Nh7 (13...Re8 14.Rb1=) 14.Qb3 (14.f4 ef3 15.Bf3 Ng5+=) 14...Qh4 15.f4 (15.g3 Qg5=) 15...ef3 (15...Nhf6 16.Qd1=) 16.Nf3 Qg4 (16...Qe7 17.Bc1=) 17.Ne5 (17.e4!?+–) 17...Qg5 18.bc6 (18.Ne4 de4 19.Nf7 Qd5+–) 18...Ne5 (18...Qe3 19.Kh1 Ne5 20.cb7=) 19.cb7 (better 19.Nb5 Bh3 20.Rf2 bc6 21.Nc7=) 19...Bh3?? (better 19...Qe3 20.Rf2 Rb8 21.bc8Q Rfc8=) 20.Rf2+– (20.Qd5? A) 20...Qe3? 21.Rf2 Rad8 22.Qe4 Qd4 23.Qd4 (23.gh3 Qc5 24.Raf1 Ng5–/+) 23...Rd4 24.gh3+–; B) 20...Rad8 21.Rf2 Rd5 22.Nd5 Nd3 23.Bd3 Qd5 24.Bh7 Kh7 25.gh3 Qb7-+) 20...Rae8 (20...Rad8 21.Nb5 Ng4 22.Bg4 (22.Nc7 Nf2 23.Kf2 Qg2 24.Ke1 Nf6-+; 22.gh3?! Nf2 23.Kf2 Bh2=+) 22...Bh2 23.Kh2 Bg4 24.Na7 Qh4 25.Kg1+–) 21.Nd5 (21.de5?! Re5 22.Qd1 Nf6+–) 21...Bb8 (21...Be6 22.de5 Be5 23.Be5 Qe5 24.Rd1+–) 22.de5 Be5 23.Rd1 Be6 24.Be5 Qe5 25.c6 Nf6 (25...Ng5 26.Bc4 Ne4 27.Rf4+–) 26.Nf6 gf6 27.Qb5 Qe3 (27...Re7 28.Qb4 Qc7 29.Rf6+–) 28.c7 a6 (28...Rb8 29.cb8R Rb8 30.Rd3+–) 29.Qe8!! (29.Qe8 Re8 30.Rd8 Qc1 31.Bf1+–) 1–0. DEFFM – Mohamedemam, freechess.org, 2018.

6.Be2 0-0 7.0-0 Re8 8.d4 e4 9.Ng5 d5 10.c4 c6 11.Nd2 Nb8 12.Rc1 (12.bc6 bc6 13.cd5 cd5+=) 12...cb5 13.cb5 Nbd7 14.Bh5? (better is 14.f3 ef3 15.Rf3+=) 14...Nh5-+ 15.Qh5? (better is 15.Nf7 Qb6 16.Qh5-+) 15...Bg5 16.f4 (16.h4 Bh4 17.Qd5-+) 16...ef3! 17.Rf3 (17.Nf3 Be3 Double attack (17...Re3 Discovered attack); 17.Rf3 Re3 Discovered attack (17...Be3 Decoy); 17.gf3 Re3 Discovered attack (17...Be3 Decoy); 17.Qf3 Re3 Discovered attack (17...Be3 Decoy)) 17...Be3 (better is 17...g6 18.Qg4 Ne5 19.Qg5 Qg5 20.de5-+) 18.Kf1 (18.Re3 Re3 19.Qd5-+) 18...Nf6 19.Qh4 Bd2 20.Rd1 Re4 21.Qf2 Bg5 (21...Be3 22.Qc2 Bg4 23.Re1 Bf3 24.gf3-+) 22.Qc2 (22.h3 Qa5 23.Kg1 Qa4-+) 22...Bg4 23.Kf2 Bf3 24.gf3 Bh4 (24...Ng4!? 25.Kg1 Be3 26.Kh1 Nf2 27.Kg1 Nd1 28.Kf1-+) 25.Kg2 Re6 26.a4 Nh5 (better is 26...Qd6 27.Bc1 Rae8-+) 27.Qc1 (27.Kh1-+) 27...Re2 28.Kf1 (28.Kh1 Qd6 29.f4 Qg6 30.Qc8 Rc8 31.Rg1 Qe4 32.Rg2 Qg2) 28...Rh2 (28...Rf2 29.Kg1 Qd6 30.Qc7 Qc7 31.f4 Qf4 32.Rf1 Qh2) 29.Kg1 Qd6 30.Rd2 (30.Kf1 Rf2 31.Ke1 Re8 32.Qe3 Re3) 30...Qg3 31.Kf1 Rh1 (31...Qf3 32.Rf2 Qf2) 32.Ke2 Rc1 (32...Nf4 33.Ke3 Re8) 33.Bc1 Re8 (33...Nf4 34.Kd1 Rc8 35.Rf2 Qg1 36.Rf1 Qf1 37.Kd2 Qc1) 34.Kd1 (34.Kd3 Rc8 35.Rc2 Qf3 36.Kd2 Qg2 37.Kd3 Qc2 38.Ke3 Rc3) 34...Qf3 (34...Rc8 35.Rf2 Qf2 36.Bf4 Qe1) 35.Kc2-+ Rc8 36.Kb2 Qc3 37.Ka2 Qc1 (37...Qc4 38.Kb2 Qc1 39.Kb3 Rc3 40.Kb4 b6 41.a5 Qa3) 38.Re2 (38.Rf2 Rc2 39.Rc2 Qc2 40.Ka1 Bf6 41.a5 Bd4) 38...Qc4 (38...Rc2 39.Rc2 Qc2 40.Ka1 Bf6 41.a5 Bd4) 39.Kb1 (39.Kb2 Qe2 40.Kb1 Qd2 41.a5 Rc1) 39...Qe2 40.a5 Qd2 41.Ka1 (41.a6 Rc1) 41...Rc1 0–1. Kuehnel,Ann Kathrin – Kuehlke,Karen, Niedersachsen–ch U16/18 Girls, 2006.

6.Be2 b6 7.0-0 Nc5 8.d4+= White gets in control 8...ed4 9.Nd4 0-0 10.Bf3 Bb7 11.Bb7 Nb7 12.Nc6 Qd7 13.Qf3 Rae8?? (better 13...Nc5+–) 14.Ne7+– Qe7 15.Qb7 d5 (15...a5 16.Nd2+–) 16.Nd2 Ra8 17.Nf3 Qd6 18.Be5 Qc5 19.Bf6 gf6 20.Rfd1 Qb5 21.Qc7 Qc5 (21...Rfd8 22.Qg3 Kh8 23.Nd4+–) 22.Qg3 (22.Qc5 bc5 23.Rd5 Rfc8+–) 22...Kh8 23.Qf4 Kg7 24.Qg4 Kh8 25.Qf5 Rg8 (25...Qc6 26.Rd5 Qe6 27.Nd4 Qf5 28.Nf5+–) 26.Qf6 Rg7 27.e4 (27.Nh4 Rc8 28.Nf5 Qc3 29.Qg7 Qg7 30.Ng7 Kg7 31.Rd5 Rc2+–) 27...Qc2 28.Ng5 Qe2 (28...Qc7 29.Rac1 Qb8 30.Nf7 Kg8 31.Nh6 Kh8+–) 29.Nf7 Kg8 30.Nh6 Kh8 31.Rd5 Qe4 (31...Qd2 32.Rd2 Re8 33.Rd7 Ree7 34.Rd8 Re8 35.Re8) 32.Rd8 (32.Rd8 Rd8 33.Qd8 Qe8 34.Qe8 Rg8 35.Qg8) 1–0. DEFFM – WinningWays, freechess.org, 2020.

6.Be2 c6 7.a4 0-0 8.0-0 a6 9.d4 e4 10.Nfd2 d5 11.c4 ab5 12.ab5 Ra1 13.Ba1 Re8 14.Nc3 Nf8 15.Qa4 Bd7 16.Qb3 Be6 17.Bb2 Ng6 (17...Bg4 18.Bg4 Ng4 19.h3+=) 18.Ra1 Bd6 19.Ba3 Bb8 20.g3 h5 (20...dc4 21.Nc4 Bd5 22.Bc5+=) 21.bc6 bc6 22.cd5 cd5 (better 22...Bd5!? 23.Nd5 cd5+=) 23.Bb5+/- h4 24.Be8 hg3 (better 24...Ne8!? 25.Bc5 Bc7+-) 25.Bf7! Bf7 (25...Bf7 26.hg3 Combination; 25...Kf7 26.hg3 Combination) 26.hg3 Ng4 (26...Bc7+-) 27.Qb7 Bg3 28.fg3 Qg5 (28...Ne3 29.Rc1 Qg5 30.Nce4 de4 31.Ne4+-) 29.Nf1 Qf5 30.Ra2 Qf3 (30...Be6 31.Qa8 Kh7 32.Nb5+-) 31.Qd7 Ne3 (31...Kh7+-) 32.Qd8 Kh7 33.Rh2 Nh4 34.Qh4 Kg6 35.Qh7 Kf6 36.Rf2 (36.Rf2 Qf2 37.Kf2 Ng4 38.Ke1+-) 1-0. onur604 (2320) - pilevski (2170), Casual Rapid game, lichess.org, 2021.

5.Nf3 Be6

6.c4 0-0 7.Be2 a6 8.a4 ab5 (8...Nbd7 9.0-0=) 9.ab5= Ra1 10.Ba1 c6 (10...Qd7 11.0-0=) 11.Nc3 b6 (11...Nbd7 12.0-0=) 12.0-0 c5 (12...Qd7 13.d4 cb5 14.de5 de5 15.Nb5+=) 13.Bb2 (13.Ng5 Bc8+=) 13...Nbd7 (13...Bg4 14.d3+=) 14.Qc2 (14.Ng5 Bf5+=) 14...h6 15.h3 (15.Ra1 Qc7+=) 15...Nh7 (15...Qc7 16.Ra1+=) 16.Bd3 (16.d4!? cd4 17.ed4 ed4 18.Nd4+/-) 16...f5= 17.Nh2 (17.e4 fe4 18.Ne4 Kh8+=) 17...e4 18.Be2 Ndf6 (18...Ne5 19.Nd5=) 19.f3 (19.d3 Ng5+=) 19...d5 (19...Ng5 20.fe4 Nfe4 21.Ne4 Ne4 22.Bf3=) 20.cd5+= Nd5 (worse is 20...Bd5 21.Nd5 Nd5 22.Bc4+/-) 21.fe4 (21.Bc4 Kh8 22.Bd5 Bd5 23.fe4 fe4 24.Ne4 Rf1 25.Nf1 Qd7+=) 21...Nc3 (21...Nb4 22.Qd1+=) 22.Bc3 (22.Qc3 Bf6 23.e5 Be7+/-) 22...fe4 23.Rf8 (23.Qe4 Rf1 24.Kf1 Ng5+/-) 23...Nf8 (23...Bf8 24.Qe4 Ng5 25.Qe5+/-) 24.Qe4 Bf6 (24...Qd5 25.Qd5 Bd5 26.Ng4+/-) 25.Bf6 (25.Bc4 Qd6+/-) 25...Qf6 26.Ng4 (26.d4 Qg5 27.Nf3 Qd8+–) 26...Qa1 (26...Qb2!?+=) 27.Kh2+/- Qb2 (27...Qa2+/-) 28.Qd3?? (28.Bc4!? Bf7+–) 28...c4 (28...h5 29.Nf2+=) 29.Qd6 (29.Qd4 Qb5 30.Ne5 Qd5 31.Qd5 Bd5 32.Nc4 b5+–) 29...Qb5 (better is 29...c3 30.Qd4 Qd2=) 30.Ne5+/- Qd5 (30...g5 31.Kg3+/-) 31.Nc4+– Qd6 (31...b5 32.Qd5 Bd5 33.Nb6+–) 32.Nd6 Nd7 (32...Ng6 33.d4+–) 33.d4 (33.Nc8 Kf7+–) 33...g5 (33...Nf6 34.e4+–) 34.Kg3 (34.Nc8 Kf8+–) 34...Nf6 35.e4 Kf8 36.Kf3 (36.Bf3 Ke7 37.e5 Kd7+–) 36...Ke7 37.Nb5 (better is 37.e5!?+–) 37...g4+/- 38.hg4 (38.Kf4!? gh3 39.gh3 Bh3 40.d5+/-) 38...Bg4= 39.Ke3 Be2 40.Ke2 Ne4 41.Ke3 Nd6 42.Nd6 (42.Nc7 b5=) 42...Kd6+= 43.Ke4 (43.Ke4 h5 44.Kd3-+). DEFFM – GuestVQLS, freechess.org, 2016.

6.Be2 Nbd7 7.Ng5 0-0 8.Ne6 fe6 9.0-0 c6 10.a4 cb5 11.ab5 b6 (11...d5 12.c4=) 12.d3 d5 Black prepares e4 13.c4 Bd6 14.Bf3 Qe7 15.cd5 (15.Nc3 e4 16.de4 dc4+=) 15...ed5= 16.Nc3 e4? (better 16...Qf7=) 17.de4+– de4 (17...Qe5 18.g3+–) 18.Ne4! Ne4 Theme: Deflection from d5 (18...Qe4 19.Be4) 19.Qd5 Theme: Double Attack 19...Kh8 20.Qe4 Ne5 21.Be2 Ng6? (better 21...Rae8+–) 22.Qe7 Be7 23.Bf3 Rac8 24.Ra7 Ra8 (24...Bf6 25.Bf6 Rf6+–) 25.Ba8 (25.Ba8 Bf6 26.Bf6 gf6 27.Rd1+–) 1–0. GuestGKNZ – GuestVBMH, freechess.org, 2020.

5.Nf3 Bg4

6.Be2 c6 7.a4 0-0 8.0-0 cb5 9.ab5 (worse 9.Bb5 e4 10.h3 Bh5-+ (10...ef3?! 11.hg4 fg2 12.Kg2=)) 9...Nbd7 10.d4 Re8 (better 10...e4!? 11.Nfd2 Be2 12.Qe2 d5=) 11.de5+/- de5 12.Ne5 Be2 13.Qe2 Bd6 14.Nc4 Re6 15.Nbd2 Qc7 16.Nd6 Qd6 17.Rfd1 Qc7 18.Qc4 Qb6 (18...Qc4 19.Nc4 a6 20.Nd6+-) 19.Bd4+- Qd8 20.Nf3 Rc8 (better 20...Rd6!?+-) 21.Bf6 Rc4?? (21...Qe8 22.Qd3 Nf6+-) 22.Bd8 Rc2 (22...Ne5 23.Ra7 Nf3 24.gf3 Rc2 25.Rb7+-) 23.Rd7 (23.Rd7 Rc8 24.Nd4+-) 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Be2 c6 7.a4 Nbd7 8.c4 (8.Nc3 0-0=) 8...h6 (8...cb5 9.ab5 e4 10.Nd4 Be2 11.Qe2=) 9.Nc3 Rc8 10.0-0 0-0 11.a5 (11.Qc2 Nc5=) 11...cb5 12.cb5 b6 (12...e4 13.Nd4 Be2 14.Qe2=) 13.ab6= ab6 (13...Qb6 14.Qa4 Rc7 15.Nd5 Nd5 16.Qg4+=) 14.h3+= Bh5 15.g4 Bg6 16.Nh4 (16.d4 Re8+=) 16...Bh7= 17.Nf5 g6? (better is 17...Bf5!? 18.gf5 d5=) 18.Nh6+/- Kg7 19.g5 Ng8 20.Ng8 (20.Ng4 f5 21.gf6 Ngf6 22.f4+/-) 20...Kg8? (better is 20...Bg8!? 21.f4 f6 22.gf6 Nf6+/-) 21.f4 f6 (21...Nc5 22.Nd5 ef4 23.Bg4 Bg5 24.ef4+–) 22.h4 (22.Ra7 Kh8+–) 22...Kg7 23.Bf3 Bg8 24.Bc6 Be6 25.Rf2 (25.Ra7 Rc7 26.Rc7 Qc7+–) 25...Nc5? (better is 25...Rh8 26.Bd5 Bd5 27.Nd5 Rh4+/-) 26.d4+– ed4 (26...Nd7 27.de5 de5 28.Ne4 fg5 29.Rd2+–) 27.ed4 Nd7 (27...Bb3 28.Qb1 Nd7+–) 28.Ne4 (28.Re2!? Bg4 29.Re7 Qe7 30.Qg4 Qe3 31.Kh1 f5+–) 28...Bf5? (28...d5 29.Nc3 Nb8 30.Re2 Nc6 31.Re6 (31.bc6?! Rc6 32.Qe1 Qd7+=) 31...Nd4 32.Re7 (worse is 32.Qd4 Bc5 33.Ra7 Rc7 34.Qc5 bc5 35.Rc7 Qc7 36.Nd5 Qa5–/+) 32...Qe7 33.Qd4+–) 29.Bd7 (better is 29.Ng3 fg5 30.hg5 Bg5 31.fg5 Qg5 32.Qb3+–) 29...Qd7 30.gf6 Rf6 (30...Bf6? 31.Nf6 Kf6 32.d5 Ke7 33.Qd4+–) 31.Nf6 Bf6 32.d5 Qb5?? (better is 32...Bb2 33.Rb2 Rc4+–) 33.Bf6 Kf6 (33...Kf8+–) 34.Qd4 Kf7 35.Ra7 Bd7 36.Kg2 (36.f5 g5 37.hg5 Kg8+–) 36...Kg8 (36...Re8 37.f5 Rd8 38.fg6 Kg8 39.Qe4 Qc5 40.Qe7 Qd5 41.Kg1 Qd1 42.Kh2 Qh1 43.Kh1 Bc6 44.Kg1 Bf3 45.Qd8) 37.Rb2 Rc4 (37...Qc5 38.Qc5 dc5 39.Rd7+–) 38.Rb5 (38.Rb5 Rd4 39.Rd7 Rf4 40.Rb6+–) 1–0. Nyikos,Laszlo – Ebert,Lothar, 6th Berlin–ch Seniors, 2010.

6.Be2 Nbd7 7.d4 ed4 8.Nd4 Be2 9.Qe2 0-0 10.Nd2 Nc5 11.0-0 Na4 12.Rab1 Qc8 (12...a6 13.ba6 Ra6 14.Nf5=) 13.Qf3 Nb6 (13...Nb2!? 14.Rb2 Re8=) 14.Nf5+– Qe6 (14...Bd8 15.Rfd1+–) 15.Ne7 Qe7 16.Qb7 Rfb8 17.Qc6 Rc8 18.Ba1 (18.c4 a6+–) 18...Nbd5 (18...a6 19.a4 ab5 20.ab5+–) 19.a4 a6 (19...Qe6+–) 20.c4 Nb6 21.a5 (better 21.Bf6 gf6 22.a5 Nd7+–) 21...Na4? (better 21...Nbd7+–) 22.b6+– Nc5 (22...Qe8 23.Qf3 Rab8 24.Bf6 gf6 25.Ne4+–) 23.b7 Nb7 24.Rb7 Ne8 25.Rfb1 Qg5 1–0. GuestDGJF – GuestDWRS, freechess.org, 2020.

6.Be2 Nbd7 7.d4 e4 8.Nfd2 Be2 9.Qe2 d5 (9...c6 10.0-0+=) 10.0-0 (10.c4 Nb6=) 10...0-0 11.c4 c6 (11...Nb6 12.Nc3 Nc4 13.Nc4 dc4 14.Qc4=) 12.Nc3 Ne8 (better is 12...Qa5!?=) 13.cd5 (13.bc6 bc6 14.cd5 cd5 15.Nd5 Nef6+/-) 13...cd5 (13...cb5 14.Qb5 f5 15.Qb3+/- (worse is 15.Qb7 Rb8 16.Qa7 Nd6+=)) 14.Nd5 f5 (14...Nef6 15.Nc3 Bd6 16.g4+/-) 15.Rfc1 Bd6 16.Nc4 Ndf6 (16...Rf7 17.Nd6 Nd6 18.Nf4+/-) 17.Nd6 Qd6 18.Nf4 Ng4 (18...g5 19.Nh3 h6 20.a4+/-) 19.h3+– g5 (better is 19...Ngf6!?+–) 20.Qc4 Rf7 21.hg4 (21.Ne6 Qh2 22.Kf1 Qh1 23.Ke2 Ne3 24.Qc8 (24.Rh1?! Nc4 25.Bc1 Ng7 26.Ng7 Rg7=; 24.Ke3?! Qg2 25.Qf1 Qf3 26.Kd2 Nd6+–; 24.fe3 Qg2 25.Kd1 Qb2 26.Ng5 Nd6=) 24...Qg2 25.Qa8 (25.Ke3 Qf3 26.Kd2 Qf2 27.Kc3 Rc8 28.Kb3 Qe3 29.Rc3 Rc3 30.Bc3 Nc7-+) 25...Qf3 26.Kd2 Qf2 27.Kc3+/-) 21...gf4+/- 22.gf5 f3 (22...Qf6 23.Qb3+/-) 23.gf3+– ef3 24.Kf1 (better is 24.d5 Rf5 25.Qg4 Qg6 26.Qg6 hg6 27.e4 Rg5 28.Kh2 Rg2 29.Kh3 Rf2 30.Be5+/-) 24...Qh2= 25.Ke1 Qg1 (better is 25...Nd6!? 26.Qd3 Rf5+=) 26.Qf1+/- Qh2 (26...Qf1 27.Kf1 Nd6 28.a4+/-) 27.e4 (better is 27.Rc2+/-) 27...Qd6? (better is 27...Nd6 28.Qd3 Qg1 29.Kd2 Qf2 30.Kc3 Re8 31.Rg1 Kh8+/-) 28.d5?? (better is 28.Qd3 Qf4 29.Qe3 Qe3 30.fe3+–) 28...Qb4–/+ 29.Bc3 Qe4 30.Kd1 (30.Kd2 Rf5 31.Re1 Rd5 32.Kc1 Qg4-+) 30...Qd5 (30...Rf5 31.Rc2-+) 31.Kc2–/+ ½–½. Gross,Wilhelm – Merten,Rainer, xvii/17, 1989.

6.Be2 Nbd7 7.d4 e4 8.Nfd2 Bf5 9.c4 c6 10.a4 c5 (10...0-0 11.g4 Be6 12.g5=) 11.f4 (11.g4 Bg6 12.g5 Ng8 13.dc5 f6+=) 11...h5 12.h3 d5 13.Qb3 dc4 14.Bc4 0-0 15.Na3 Nb6 16.0-0 Nc4 17.Nac4 Be6 18.Rfc1 Qd5 19.Rc2 g5 (19...Qf5!?=) 20.dc5+= gf4 21.Qc3 (21.Kh2+=) 21...f3 (21...Qd3 22.Re1 Rfc8 23.Nd6 Qc3 24.Rc3+= (worse is 24.Bc3 Rc5 25.N2e4 Ne4 26.Ne4 Rc4 27.ef4 Bf5+=)) 22.Qe5 (22.Nd6 Bf5 23.gf3 Kh7 24.N6e4 Rg8 25.Kh2 Ne4 26.fe4 Be4 27.Ne4 Qe4+/-) 22...f2 (better is 22...fg2 23.Kg2 Kh7=) 23.Kf2+/- Rac8 24.Bd4 ½–½. Schwichtenberg,Juergen (1635) – Mehlhorn,Dieter (1750), GER–ch Seniors–B, 2008.

6.Be2 Bf3 7.Bf3 e4 8.Be2 d5 9.c4 0-0 (9...dc4 10.Bc4 a6 11.Qb3=) 10.Nc3 (10.cd5 Nd5 11.Nc3 Bf6=) 10...Bb4 (10...dc4 11.Bc4 c6 12.d3 cb5 13.Bb5–/+) 11.Nd5 (11.cd5 a6+=) 11...Nd5= 12.cd5 Qd5 13.a4 (13.Bc3 Bc3 14.dc3 Qe6=) 13...Ba5 (13...Rd8 14.0-0 Qd2 15.Bg4=) 14.Rc1 (14.0-0 Qd2 (worse is 14...Bd2 15.Qc2+/-) 15.Qd2 Bd2=) 14...Nd7 (14...a6 15.0-0=) 15.Bc4 (15.0-0 Ne5+=) 15...Qd6 16.Qc2 Nc5 (16...Rad8 17.Be2=) 17.Bd4 (17.Ba3!? b6 18.0-0+/-) 17...Ne6= 18.Bb2 (18.Qe4 Nd4 19.Qd4 Qd4 20.ed4 Rfe8 21.Kd1 Rad8=) 18...Rad8 (18...a6 19.ba6 ba6 20.0-0 Qd2 21.Be5 Qc2 22.Rc2=) 19.0-0 (19.Rd1 Qb4 20.Be6 fe6 21.Bd4=) 19...Bd2 (better is 19...Qd2!? 20.Qb1 Qb4+=) 20.Rcd1+/- Qb4 21.Be6 fe6 22.Bd4 e5 (better is 22...Rd4 23.ed4 e3 24.fe3 Be3 25.Kh1 Rf1 26.Rf1 Qd6+–) 23.Rd2?? (better is 23.Bc5 Qc3 24.Qc3 Bc3 25.Bf8 Rf8 26.Rd7+–) 23...ed4= 24.Rd4 (24.Rb1!? Qc3 25.ed4 Qc2 26.Rc2 Rd4 27.Rc7 Ra4 28.Rb7=) 24...Rd4+= 25.ed4 Qd4 26.Rd1 Qb6 (26...Qe5 27.Qb3 Kh8 28.Qe3=) 27.Qc4 (27.Rd7 Qf6 28.Rc7 Qa1 29.Qc1 Qa4 30.Rb7 a5=) 27...Kh8 28.Qe4?? (better is 28.Qd4=) 28...Qf2 (worse is 28...Rf2 29.a5 Qc5 30.Qe5+=) 29.Kh1 Qf1!! 30.Rf1 (30.Rf1 Rf1) 30...Rf1 0–1. DEFFM – GuestMGMD, freechess.org, 2016.

6.h3 Bh5 7.Be2 0-0 8.0-0 Nbd7 9.d4 e4 10.Nfd2 Be2 11.Qe2 d5 (11...c6 12.c4=+) 12.c4 c6 13.Nc3 Nb6 14.c5 Nbd7 15.a4 Re8 16.Nb3 White prepares the advance a5 (16.f3 ef3 17.Qf3 Nf8=) 16...Nf8 17.a5 Ng6 (17...cb5 18.a6 Qc8 19.ab7 Qb7 A) 20.Qb5? Qb5 21.Nb5 Rab8 22.Na7 Rb3-+; B) 20.Nb5? Reb8 21.Ra5 Bd8 22.Ra7 Ra7 (22...Qb5 23.Qb5 Rb5 24.Ra8 Rb3 25.Rd8 Rb2 26.Rc1+–) 23.Na7 Ne6-+; C) 20.Na5=) 18.a6 ba6 (better 18...b6!?=) 19.Ra6+– (19.ba6?! Rb8 20.Ra3 Qd7=) 19...cb5 20.Nb5 Qc8 21.Rfa1 (worse 21.Na7 Qb8 22.Na5 Ra7=+; 21.Ra7? Ra7 22.Na7 Qb7-+) 21...Qf5? (better 21...Rd8!?+–) 22.Nc7+– (22.Ra7?! Ra7 23.Ra7 Rb8+–; 22.Na7?! Qg5+–) 22...Rf8 (22...Qd7 23.Ne8 Qe8 24.Ra7 Ra7 25.Ra7+–) 23.Na8 Ra8 24.Ra7 Ra7 25.Ra7 Bf8 26.c6 Qg5 (26...h5+–) 27.c7 Nh4 (27...Qf5 28.Ra8 h5 29.Ba3+–) 28.Qf1 Nf3 29.Kh1 Qf5 30.Ra8 (30.Ra8 Nh4 31.Ba3+–) 1–0. GuestGKNZ – GuestVBMH, freechess.org, 2020.

6.Be2 0-0

7.0-0 c6 8.c4 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 Qa5 (11...Nbd7 12.Nc3=+) 12.Bc3 Qb6 13.Na3 (13.d4 e4 14.Nfd2 Be2 15.Qe2 cb5=) 13...d5 14.Ne5 ( 14.Nc2!? dc4 15.Ne5 Be2 16.Qe2 cb5 17.Rb1=) 14...Be2-+ 15.Qe2 Ba3 16.Ra1 Be7 17.Ng4 (17.Ba5!? Qc5 18.d4-+) 17...Nbd7 18.Ba5 (18.Nf6 Bf6 19.cd5 cd5-+ (< 19...Qb5 20.Qb5 cb5 21.f3-+)) 18...Qa7 (18...Ra8 19.Bc3 Ra1 20.Ba1 dc4 21.Qc4 cb5 22.Qc8 Bf8 23.Nf6 Nf6 24.Qf5-+) 19.b6 (19.cd5 Nd5 20.Nh6 Kh8-+) 19...Qb8 (19...Qa6 20.Bc3 Qb6 21.Nf6 Nf6 22.cd5 Nd5 23.Be5-+) 20.d4 Qd8 (20...dc4 21.Nf6 Nf6 22.Qc4-+) 21.c5 Qa8 22.Bc3 Qc8 23.f4 Ne4 24.Be1 Ndf6 25.Ne5 Nd7?? 26.Qg4?? Ne5 27.Qc8 Rc8 28.fe5 Bg5 29.Bf2 Nf2 30.Kf2 Kf8 31.Kf3 Ke7 32.Ra7 Rb8-+ 33.g3 f5 34.h4 Bh6 35.Ra1 g5 36.hg5 Bg5 37.Rh1 h6 38.g4?? fg4 39.Kg4 Be3 40.Kf5 Rf8 (41.Kg6 Bd4-+; 40...Rg8!? 41.Rh5 Rg1 42.e6-+) 0–1. klafka – annmarie, Live Game Caissa's Web, 2004.

7.0-0 Nbd7 8.a4 Bf3 9.Bf3 e4 10.Be2 Nd5 (10...d5 11.f3=) 11.c4 Bf6 12.Qc1 Bb2 13.Qb2 N5f6 14.Nc3 Nc5 15.Qc2 Re8 16.f3 Qe7 17.Rae1 Rad8 18.fe4 Nce4 19.Bf3 Nc3 20.Qc3 b6 (better is 20...d5!?=) 21.Bc6+/- Rf8 22.Rf3 d5 23.Rg3 (23.d4 dc4 24.Qc4 Rd6+/-) 23...g6 (better is 23...dc4 24.Rf1 Kh8=) 24.Rf3 dc4? (better is 24...d4 25.Qa1 Ng4 26.ed4 Qd6+/-) 25.Rf6+– Qc5 26.Rf2 Rd3 27.Qc2 Rfd8 28.Ref1 f5 29.Bf3 (29.Rc1!? Qb4+–) 29...c3 30.dc3 Rc3 31.Qa2 Kf8 32.e4 Kg7 33.ef5 Qf5 34.Qb2 Qc5 35.g3 Kh6 36.Kg2 Rdd3 37.Bc6 Qg5 (37...Qa3+–) 38.Bf3 Rb3?? (better is 38...Qc5=) 39.Qa1 Rf3 (39...Ra3 40.Qb1 Rd4+–) 40.Rf3 Rf3 41.Rf3 Qd2 42.Kh3 Qd7 43.g4 (43.g4+–) 1–0. Sahovski,Alexandr (1885) – Bondarenko,Anton, Dimitrovgrad Petrosian Memorial op, 2008.

7.0-0 Nbd7 8.d4 e4 9.Nfd2 Be2 10.Qe2 d5 11.c4 c6 12.a4 a6 13.Nc3 Bb4 14.f3 Re8 15.fe4 Bc3 16.Bc3 Ne4 17.Ne4 Re4 (worse is 17...de4 18.bc6 bc6 19.Qg4+=) 18.cd5 cd5 19.ba6 Ra6 20.Rf3 Qc7 21.Bb4 Rae6 22.Raf1 Nf6 23.Rg3 Qc6 24.a5 Rd4 25.Ba3 Ra4-+ 26.Bb2 Ra2 (better is 26...Ra5 27.Qf3 Kh8-+) 27.Rg7= Kg7 28.Bf6 Rf6 29.Qa2 Qc4 30.Qa1 Qf1 31.Qf1 Rf1 32.Kf1 h5 33.Ke2 Kf6 34.Kd2 Ke5 35.Kd3 h4 36.g3 hg3 37.hg3 f5 38.Kd2 Kd6 39.Ke2 Kc5 40.Kf3 Kb5 41.Kf4 Ka5 42.Kf5 b5 43.g4 b4 44.g5 b3 45.g6 b2 46.g7 b1Q 47.Kf6 Qh7 48.Kf7 Kb5 49.Kf8 0–1. Misiewicz,Patryk – Jasnikowska,Daria (1725), Int Chess Tourn Kowalewo Pomorskie Poland, 2009.

7.0-0 h6 8.c4 e4 (8...a6 9.a4=) 9.Nd4+= White gets the initiative 9...Be2 10.Qe2 d5 11.Nf5 Nfd7?? (better 11...c6+=) 12.Bg7+– Re8 (12...Bf6 13.Bf8 Kf8 14.Nc3+–) 13.Qh5 (13.cd5?! Bf6 14.Qg4 h5 15.Bf6 hg4 16.Bd8 Rd8+–; 13.Bh6?! Nf6+–; 13.Ne7?! Qe7 14.Bb2 dc4 15.Qc4 c6+–) 13...Bg5 14.Bh6 Bh6 15.Nh6 (15.Qh6?! Qf6 16.Qh3 dc4+–) 15...Kg7 16.Nf5 Kg8 (16...Kf6 17.f4 Nb6+–) 17.Qg4 (17.Qg4 Qg5 18.Qg5 Kh7 19.Qg7) 1–0. DEFFM – SorryYouLose, freechess.org, 2020.

7.d4 e4+= 8.Nfd2 Be2 9.Qe2 d5 (9...a6 10.d5+=) 10.0-0 (10.c4 c6=) 10...c6 (10...a6 11.c4+=) 11.a4 b6 (11...Nbd7 12.c4=) 12.c4 Bb4 (12...Re8 13.Rc1=) 13.Ba3 Ba3 14.Na3 Qd6 (14...a6 15.Rfc1=) 15.Nc2 ½–½. Schwichtenberg,Juergen (2005) – Scholz,Gerd, Hessen–ch Seniors, 2004.

7.h3 Bf5 8.c4 (8.0-0 a6=) 8...b6 (8...a6 9.0-0+=) 9.a4 (9.0-0 a6=) 9...a6 (9...c5 10.d3=) 10.Nc3 ab5 (10...Nbd7 11.0-0=) 11.ab5 Ra1 12.Qa1 Nbd7 (12...c5 13.0-0=) 13.d4 e4 (13...Re8 14.0-0+=) 14.Nd2 (better is 14.Nh4 Be6 15.g4+=) 14...Qa8? (14...h6 15.g4 Bh7 16.h4+/-) 15.0-0 (15.Qa8 Ra8 16.g4 Bg6+–) 15...Qa1 (15...Bg6!?+=) 16.Ra1+/- h6 17.Ra7 Rc8 18.g4 Bg6 19.Bf1 (better is 19.h4+–) 19...c6 (19...d5!?+/-) 20.Bg2 (20.h4 Ng4 21.Rd7 Bh4 22.Nce4 d5+–) 20...d5 (20...cb5 21.cb5 (21.Nce4?! bc4 22.Nf6 Nf6=; 21.Nde4?! b4 22.Nf6 Nf6+/-) 21...Bf8 22.Nde4 (22.Nce4?! d5 23.Nf6 Nf6+/-) 22...Be4 23.Ne4+– (23.Be4?! Rc3 24.Bc3 Ne4+=)) 21.bc6 Rc6 22.Nd5 (22.cd5 Rc8+–) 22...Nd5 23.Rd7 (23.Rd7 Bb4 24.Rd8 Kh7 25.cd5+– (25.Be4?! Be4 26.Ne4 Nc7+–)) 1–0. DEFFM – GuestHVZP, freechess.org, 2016.

7.h3 Bh5 8.0-0 Qd7 9.c4 c6 (9...e4 10.Nd4 Be2 11.Qe2=) 10.a4 (better is 10.Nc3=) 10...c5 (10...e4!? 11.Nd4 Be2 12.Qe2 d5=) 11.Nc3 (11.Ne5 de5 12.Bh5 e4+/-) 11...h6 (11...e4 12.Ne1 Be2 13.Qe2+=) 12.d4 (12.Ne5 de5 13.Bh5 Rd8+/-) 12...e4 (12...cd4 13.ed4 e4 14.Nd2+=) 13.Nd2 Be2 (13...cd4 14.Nce4 Be2 15.Qe2 Ne4 16.Ne4+/-) 14.Qe2 d5 (14...Qf5 15.f3 ef3 A) 16.Qf3 Qc2 17.Qb7 A1) 17...Qd2? 18.Rf2 (18.Qa8?! Qb2 19.Rac1 cd4 20.ed4 Nfd7=) 18...Qe3 19.Qa8+–; A2) 17...Qb2 18.Qa8 Qc3 19.Qa7 Qe3 (worse is 19...Qd2 20.Qe7 cd4 21.Rad1 Qe3 22.Qe3 de3 23.Rd6+/-) 20.Rf2 Nh7–/+; B) 16.Rf3?! Qh5+=; C) 16.Nf3+=) 15.cd5 (better is 15.dc5 dc4 16.Nde4 Ne4 17.Ne4+/-) 15...Qd5?? (15...cd4 16.ed4 (16.Nde4 dc3 17.Nc3 Nd5–/+) 16...Re8 17.Nde4 Nd5 18.Rfe1+/-) 16.dc5 (better is 16.Nd5 Nd5 17.dc5 Nf6+–) 16...Bc5?? (16...Qe6+/-) 17.Rad1 (better is 17.Nd5 Nd5 18.Qg4+–) 17...Qf5 (better is 17...Qe6!?=) 18.Qc4+/- Nbd7 (18...Re8 19.g4 Qe5 20.Nce4 Qb2 21.Qc5+/-) 19.Nce4 Rac8 20.Qd3 (20.a5+/-) 20...Ne5 (better is 20...Qe6!?+/-) 21.Nf6+– Qf6 22.Nc4 (22.Qd5!? Nf3 23.Nf3 Qb2 24.Qb7 Qb3+–) 22...Nd3+/- 23.Bf6 Nf2 (23...Nb4 24.Be5 Rfd8 25.Bd6+/-) 24.Rf2 (24.Kf2 gf6 25.Rd7 Bb4+/-) 24...gf6 25.Rf6 Be7 (25...Rfe8 26.Rf4+/-) 26.Rf4 Bg5 27.Rg4 (better is 27.Rfd4!?+/-) 27...f5= 28.Rgd4 Bf6 29.Rf4 Bg5 30.Rfd4 Bf6 31.Rd6? (better is 31.Nd6 Bd4 32.Rd4 Rc1 33.Kf2=) 31...Be7?? (better is 31...Rc4 32.Rd7 Rf7-+) 32.Re6?? (32.Rg6 Kh7 33.Re6 Rc7+–) 32...Bg5?? (better is 32...Kf7 33.Rh6 Rc4+=) 33.Nd6+– Rc3 34.e4 Be3 35.Kh1 fe4 36.Ne4 Rc4 (better is 36...Ra3!?+–) 37.Nd6 (37.Nd6 Rc3 38.Nb7+–) 1–0. GuestRXPW – SirOccor, freechess.org, 2016.

5.Nf3 h6

6.Be2 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 0-0 10.0-0 Nbd7 11.d4 e4 12.Nfd2 d5 13.c4 c6 14.Nc3 Qa5 15.Qb3 Nb6 16.c5 Na8 17.b6 Bg4 18.Bb2 Bc5 (18...Be2!? 19.Ra1 Qa1 20.Ba1 Ba6+–) 19.dc5+– Qc5 (better 19...Be2!? 20.Ra1 Qc5 21.Ne2 Nd7+–) 20.Ba3 Qb6 21.Qb6 Nb6 22.Bg4 Ng4 23.Bf8 Kf8 24.Rb1 Nc8 (24...Nd7 25.Rb7 Ke7 26.f3 Ne3 27.Kf2+–) 25.Rb7 Ke8 26.Rb8 (26.Nb3 Ne5+–) 26...Kd7 27.Rb7 Ke6?? (27...Ke8 28.Nb3 Ne5+–) 28.Nb3+– Ne7 29.Nc5 Kd6 30.Rd7 Kc5 31.Re7 f6 (31...g6+–) 32.Rg7 Ne5 33.Rh7 Kc4 (33...h5 34.Rh5 Kd6 35.Kf1+–) 34.Ne2 Kd3 (34...Ng4 35.h3 Ne5 36.Rh6+–) 35.Nf4 Kc4 36.Rh6 c5 Black intends d4 (36...Nd7 37.Nh5+–) 37.Rf6 d4 38.ed4 cd4 39.Re6 Nd3 (39...Nd7 40.Re4 Nf6 41.Re1+–) 40.Re4 Nf4 (40...Nc5 41.Re8 Kc3 42.g4+–) 41.Rf4 (41.Rf4 Kd5 42.h4+–) 1–0. onur604 – Ahmed_salah_zaki (1710), lichess.org, 2020.

6.Be2 c5 7.c4 (7.0-0 0-0=) 7...Be6 (7...e4 8.Ng1+=) 8.d4 ed4 (8...cd4 9.ed4 e4 10.Nfd2=) 9.ed4 Nbd7 (9...0-0 10.d5 Bf5 11.Nc3=) 10.0-0 (10.d5 Bg4+=) 10...Qc7 (10...d5 11.dc5 Nc5 12.cd5 Qd5 13.Nc3=) 11.d5+= Bf5 12.Bd3 ½–½. Sebesta,Petr – Walica,Roman (1690), Orlova CZE, 2013.

6.Be2 Be6 7.Nc3=.

4.b5 Bf5

5.a4 a6 6.c4 ab5 7.ab5 Ra1 8.Ba1 Nbd7 9.Nf3 Be7 10.Be2 0-0 11.0-0 h6 12.Nc3 Nc5 13.d4 ed4 14.Nd4 Bg6 15.Bf3 (15.Nb3 Nb3 16.Qb3 Qd7+=) 15...Nfe4 (15...Bd3!? 16.Be2 Bg6=) 16.Ne4+= Be4 (16...Ne4 17.Nb3 Qe8 18.Na5+=) 17.Be4+– Ne4 18.Bb2 (better 18.Nf5!? Bf6 19.Qg4 Ba1 20.Nh6 Kh8 21.Qe4+– (21.Ra1?! Nf6 22.Qh4 gh6=)) 18...Bf6+= 19.Qe2 Nc5 20.Ra1 Re8 21.h3 Bd4 (21...Qd7 22.b6=) 22.Bd4+= Nb3 23.Rd1 Nd4 24.Rd4 Qf6 25.Rf4?? (better 25.Qa2+=) 25…Qf4!-+ (25...Qf4 26.b6 cb6-+) 0–1. RichardSommer (2065) – otomen (2100), lichess.org, 2020.

5.a4 c6 6.d4 ed4 7.ed4 d5 8.Ne2 Qa5 9.Nec3 Bb4 10.Bd3 Bd3 11.Qd3 0-0 12.0-0 Re8 13.Ne2 Nbd7 14.h3 (14.Bc3 Nb6+=) 14...Re7 15.Nbc3 Rae8 16.bc6 bc6 17.Ba3 Bc3 (17...c5 18.Rfb1–/+) 18.Nc3 Re6 19.Rab1 Ne4 (19...Qc7 20.Bc1+=) 20.Bb4= Qc7 21.a5 Rh6 (21...Nef6 22.Qd2+=) 22.Rfe1= Nef6 (22...Ndf6 23.Qe2 Re6 24.Ne4 Ne4 25.Qe3=) 23.a6 Ng4?? (better is 23...Re1 24.Re1 Rh4+=) 24.Re8 (24.hg4?? Qh2 25.Kf1 Qh1) 24...Nf8 If Black now would get Qh2 in, he might survive 25.Rf8 1–0. Steingraeber,Barbara (1700) – Horatschek,Peter (1640), DESC, 2002.

5.a4 Nbd7 6.c4 g6 7.Nf3 Bg7 8.Be2 0-0 9.0-0 Nc5 10.d4 White fights for the Initiative 10...ed4 11.Nd4 (11.Qd4? Bd3 12.Bd3 Ne8–/+) 11...Bd7 (11...Be6 12.Nd2=) 12.Bf3 Nce4 13.Nc3 Re8 14.Qc2 Nc3 (14...Nc5 15.a5 a6 16.Rfd1+=) 15.Bc3 Rb8 16.a5 Bf5? (16...Ng4 17.a6 Qh4 18.h3 Ne3 19.fe3 Re3 20.Rad1+–) 17.Qb3?? (better 17.Nf5 gf5 18.Qf5+–) 17...Ne4 (17...Be4 18.Qd1+=) 18.Nf5 gf5 (better 18...Bc3!? 19.Ra4 Qf6 20.Nh6 Kf8+=) 19.Bg7+– Kg7 20.a6 b6 21.Qb2 f6 (21...Qf6 22.Qc2+–) 22.Rad1+– Qe7 23.Rd5 Qe6 24.Qd4 Rbd8 25.g4 (better 25.Rd1!?+–) 25...fg4+= 26.Be4 Qe4 27.Rd1 (27.Rg5 Kf7 28.Rg4 Qd4 29.Rd4 Rg8 30.Kh1 Rg7+=) 27...Qf3 (better 27...Qg6=+) 28.Qf4?? (better 28.Rg5! Kh8 29.Rg4+–) 28...Qf4–/+ 29.ef4 Re2 30.Kg2 Rde8 31.R1d2 (31.Kg3 R8e4–/+) 31...Rd2-+ 32.Rd2 Re4 33.Kg3 Rc4 34.Kg4 Kg6 35.Rd3 h5 36.Kh3 f5 (36...Rc5 37.Rb3-+) 37.Rg3 Kh6 (37...Kf6 38.Rg8 Rf4 39.Rf8 Ke7 40.Ra8-+) 38.Rf3 (38.Rg8 Rc5–/+) 38...Re4 (38...d5 39.Re3-+) 39.Kh4? (39.Rc3 Re7=+ (worse 39...Rf4 40.Rc7 Rf3 41.Kg2+=)) 39...Kg6 (39...d5 40.Kg3 Rc4 41.Re3–/+) 40.Kg3 (40.Rc3 Rf4 41.Kg3 Rg4 42.Kf3 Rb4–/+) 40...d5 (40...Rc4 41.Kh4-+) 41.Rc3? (41.Rd3 h4 42.Kh4 Rf4 43.Kg3 Rg4 44.Kh3 Rf4=) 41...Re7 (better 41...Rc4!? 42.Re3 Kf6-+) 42.Rc6=+ Kg7 43.f3 (43.Kh4 d4 44.Rc2 Kg6 45.Rc6 Kf7=+) 43...Rd7 (43...d4 44.Rc4 d3 45.Rd4–/+) 44.Re6 Kf7 45.Re5 Kf6 46.Re8 Re7?? (better 46...d4!? 47.Re1 Rd5-+) 47.Rf8 (47.Ra8!? c5 48.bc6=) 47...Rf7 (47...Ke6 48.Ra8 d4 49.Ra7–/+) 48.Rh8 (48.Rh8 Ke7 49.Ra8=+ (worse 49.Rh5 Kd6–/+); 48.Ra8 c5 49.bc6 Rc7=). RichardSommer (2080) – Art_Vandelay (2105), lichess.org, 2020.

5.a4 Be7 6.c4 h6 7.Nf3 0-0 8.Be2 Nbd7 9.0-0 Re8 10.h3 Nc5 (10...a6 11.d4 e4 12.Nh4=+) 11.d4 ed4 12.Nd4 (worse 12.Qd4 Nb3 13.Qf4 Na1 14.Qf5 Nb3–/+) 12...Bh7 13.Bf3 Rb8 14.Nc3 Qd7 (14...Bd3 15.Be2 Be2 16.Qe2=) 15.Nd5 Nd5 16.Bd5 Bf6 17.Qe2 (17.a5 Be4=) 17...Ne4 (better 17...Bd3!? 18.Qd1 Bf1 19.Qf1 Ne6–/+) 18.Rfc1 (18.a5 a6=) 18...Bg6 19.Nc6?? (better 19.a5=) 19...bc6-+ 20.Bc6 Qd8?? (better 20...Qc6! 21.bc6 Rb2-+) 21.Be8=+ Qe8 22.f3? (22.Bf6 Nf6 23.c5 Be4=+) 22...Nc5?? (better 22...Ng3 23.Qd2 Bb2 24.Qb2 Qe3 25.Kh2 Ne2-+) 23.Bf6= gf6 24.e4 (24.Rd1 Qe6=) 24...Qe5 (better 24...Nb3 25.Qe3 Nc1 26.Rc1 f5-+) 25.a5? (better 25.Re1!?=+) 25...f5 (25...Nb3!? 26.Rab1 Nc1 27.Rc1 Qc5 28.Qf2 Rb5 29.cb5 Qc1 30.Kh2-+) 26.Re1 Re8 27.Qf2 (27.Ra3 fe4 28.Qd2 Kg7–/+) 27...fe4 (27...Nd3 28.Qa7 Ne1 29.Re1 Qc3-+) 28.fe4 (better 28.Ra3–/+) 28...Ne4?? (better 28...Nd3 29.Qa7 Ne1 30.Re1 Qc3-+) 29.Qa7= Qc3 30.Qc7 (better 30.Rac1 Qg3 31.a6+=) 30...d5 (better 30...Qd4 31.Kh1 Ng3 32.Kh2 Ne2=) 31.b6 Qc4?? (better 31...Nf6 32.Rec1 Qd4 33.Kh2 dc4 34.Qc4 Qe5 35.Kg1 Qe3 36.Kh1 Be4+–) 32.Qc4+– dc4 33.b7 c3 (33...Rf8 34.Reb1 Nc5+–) 34.a6 (34.a6 Kg7 35.a7+–) 1–0. RichardSommer (2055) – sjavanrooh (2060), lichess.org, 2020.

5.c4 a6 6.Nc3 ab5 (6...Be7 7.Nf3 (7.Be2 Nbd7 8.Nf3 0-0 9.0-0 ab5 10.cb5 d5 11.Nh4; 7.h3 0-0 8.Qf3 Bc8 9.Nge2 Nbd7 10.Ng3 Nc5 11.Be2; 7.Qf3 Qc8 8.h3 Bg6 9.Qg3 0-0 10.Nf3 Nbd7 11.Be2) 7...ab5 8.cb5 0-0 9.Be2 Nbd7 10.0-0 c5 11.Nh4) 7.cb5 Ra5 (7...d5 8.Nf3 Bd6 (8...Nbd7 9.Be2 Bd6 10.0-0 0-0 11.a4 c6) 9.Qb3+= Be6 10.Qc2 (10.Ng5 0-0 11.Ne6) 10...Nbd7 (10...h6 11.Be2) 11.Ng5 0-0; 7...Be7 8.Qf3 Qc8 9.Be2 c6 (9...0-0 10.Nh3 c6 11.Ng5) 10.e4 (10.Nh3 cb5 11.e4) 10...Be6 11.Nh3 h6) 8.Qf3 (8.d4 Be7 9.de5 de5 10.Qd8 Bd8 11.Nf3) 8...Be4?? (better is 8...Bc8+= 9.Nh3 (9.Bc4 c6 10.Nh3 d5 11.Be2) 9...Nbd7 10.d4 d5 11.Nd5+= (11.Be2 Ba3); 8...Qc8 9.Nh3 (9.h3 Bg6 10.Qd1 Nbd7 11.Nf3) 9...Be7 10.Be2 0-0 11.a4 c6) 9.Ne4+– Ne4 10.Qe4 Rb5 (10...c6+–) 11.Bb5 c6 12.Be2 d5 (12...Nd7+–) 13.Qe5 Qe7 14.Qb8 Kd7 15.Bg4 Qe6 16.Be6 (16.Be6 Ke6 17.Qe8 Be7 18.Qh8+–) 1–0. Anonymous – medo, internet, 2011.

5.c4 c6 6.a4 cb5 7.ab5= Nbd7 8.Nc3 Be7 (8...Nc5 9.Nf3 Bd3 10.Ba3=) 9.Nge2 (better 9.Qf3!? Be6 10.Qb7+=) 9...Nb6 10.Ng3 Be6 11.d3 0-0 (11...d5 12.f4=+) 12.Be2 h6 (12...d5 13.Bf3=+) 13.0-0 Qc7 14.f4 (14.Rc1 a5=) 14...ef4 15.Rf4 White is in command 15...d5 16.cd5 Nbd5 17.Nd5 Nd5 (worse 17...Bd5 18.Nf5 Bc5 19.Qf1+–) 18.Rc4 Qd6 (18...Qd7 19.Bd4=+) 19.Qd2 Bg5 (better 19...Qb6!? 20.Bd4 Qb5=+) 20.Ne4+= Be3? (better 20...Qe7!? 21.Ng5 Qg5+=) 21.Qe3!+– Ne3 22.Nd6 Bc4 23.Nc4 (23.dc4!? Rfd8 24.Be5 Re8 25.Ne8 Re8+–) 23...Nc4+– 24.dc4 Rfe8 (24...Rfc8!?+–) 25.Bf3+– Re3 (better 25...Re7+–) 26.Bb7 Rae8 (26...Rd8 27.Kf2 (27.Ra7?! Rd2 28.h4 Rb2+–) 27...Rb3 28.Be5 Rd2 29.Kf1+–) 27.Bd5 (27.Ra7?! Re1 28.Kf2 R8e2 29.Kf3 Rb2+–) 27...Re1 28.Re1 Re1 29.Kf2 Rb1 (29...Re7 30.Kf3+–) 30.Bd4 Rd1 (30...g6+–) 31.Ba7 Kf8 32.b6 Rb1 33.b7 Ke7 34.b8Q Rb8 35.Bb8 Kd7 1–0. aravind555 – jmeurer, lichess.org, 2019.

5.c4 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.b5 Bf5).

5.c4 Bg4 6.Qb3 (6.Be2 Be6=) 6...Bf5 (6...Nbd7 7.d4=+) 7.d4 ed4 8.ed4 Be6 (8...Nbd7 9.Nf3=) 9.Nf3 (9.d5 Bf5+=) 9...b6 (9...d5 10.Nc3=) 10.Be2 (10.d5 Bg4+/-) 10...Be7 11.0-0 (11.d5 Bg4+=) 11...0-0 12.Re1 (12.d5 Bg4+=) 12...Bg4 (12...d5 13.Nc3=) 13.Nbd2 (13.h3 Bc8+=) 13...Nbd7 (13...a6 14.d5+=) 14.Bd3 (14.h3 Bh5+/-) 14...Bh5 15.Ne4 (15.Re3 Re8+/-) 15...Bf3+= 16.gf3 Nh5 17.Bc1 f5 (17...a6!?+=) 18.Ng3+/- Ng3 19.hg3 (19.fg3 a6+/-) 19...Kh8 20.Kg2 Bf6 21.Be3 Re8? (21...f4 22.gf4 (22.Bf4?! Bd4 23.Rad1 Nc5=) 22...a6 23.Rh1+/-) 22.Rh1 (better 22.Bf5!? a6 23.Rh1+-) 22...g6+/- 23.Rh2 (23.c5 A) 23...dc5?? 24.Qf7 Bh4 25.Rh4 Qh4 26.gh4+- (26.Qd7?! Qd8 27.Qc6 Qd6+-); B) 23...Nf8 24.Qf7 Qe7+/-) 23...Kg7 (23...Nc5!? 24.Qc2 Nd3 25.Qd3 a6+=) 24.Rah1+/- Rh8?? (24...h5 25.Qc2+/-) 25.Qc2 (better 25.Bh6 Kf7 26.c5 Ke8 27.Re1 Qe7 28.Re7 Ke7 29.c6+-) 25...a6+/- 26.a4 (26.Bh6 Kf7 27.c5 Nf8+/-) 26...ab5 27.ab5 Ra5 (27...Qe7 28.Re1 Bg5 29.Bd2+/-) 28.Qd2 (28.Bh6!? Kf7 29.Bd2+-) 28...Qa8 29.Bh6 Kf7 30.g4 (30.Bg5 h5+/-) 30...Ra2 31.Qe3 Re8 32.Qf4 g5?? (32...Ne5 33.Bf5 Nf3 34.Qf3 gf5+/-) 33.Qf5+- Rf2 (33...Ke7 34.Bg5 Kd8 35.Rh7 Qf3 36.Kf3 Re3 37.Ke3 Bg5 38.Qg5 Kc8 39.Rh8 Nf8 40.Rf8 Kb7 41.Qd5 c6 42.Rh7) 34.Kf2 Qa2 35.Kg3 Qb3 36.Bg5 (36.Qh7 Bg7 37.Qg7 Ke6 38.Bf5) 36...Re3 (36...Rd8 37.Rh7 Ke8 38.Qe6 Be7 39.Qe7) 37.Be3 (37.Rh7 Ke8 38.Qd7 Kf8 39.Qf7) 37...d5 (37...c6 38.Rh7 Kg8 39.Qg6 Bg7 40.Qg7) 38.Bg5 (38.Rh7 Kg8 39.Qd5 Kf8 40.Qf7) 38...Qd3 (38...Kg7 39.Rh7 Kg8 40.Qd5 Kf8 41.Qf7) 39.Qd3 (39.Rh7 Kf8 40.Rh8 Ke7 41.R1h7 Kd6 42.Qd7) 39...Bg5 40.Qh7 Ke8 41.Qf5 (41.Qg6 Kd8 42.Rh8 Nf8 43.Rf8 Kd7 44.Rh7 Be7 45.Qc6) 41...Be7 (41...Bh6 42.Rh6 Kd8 43.Rh8 Nf8 44.R1h7 dc4 45.Qf8) 42.Qg6 (42.Rh8 Nf8 43.Qc8 Kf7 44.R1h7 Nh7 45.Rh7 Kf6 46.Qf5) 42...Kd8 43.Rh8 (43.Rh8 Nf8 44.Re1 Bh4 45.Kh4 Kc8 46.Rf8 Kb7 47.Qc6 Ka7 48.Qc7) 1-0. ClayPigeons (2120) - ellerre (2175), Rated Bullet game, lichess.org, 2021.

5.d3 a6 6.d4 e4 7.ba6 Na6 8.c4 =+.

5.d3 Nbd7 6.Nd2 Be7 7.h3 (7.e4 Bg6=+) 7...0-0 8.g4 Be6 9.g5 Nd5 10.h4 (10.c4 N5b6–/+) 10...f6 (10...Nc5 11.c4 Nb6 12.a4=+) 11.Qh5 (11.g6!? h6 12.c4=+) 11...Bf7 12.Qg4 (12.Qf3–/+) 12...fg5 ( 12...f5!? 13.Qf3 Nb4–/+) 13.hg5= Bg5 14.Ngf3 Bf6 15.Ne4 Ne7 (15...Nb4 16.Kd1=+) 16.Nfg5 (16.Bh3 Be8 17.Nfg5 (< 17.Nf6 Nf6 18.Qg3 c6=+) 17...Bg5 18.Ng5+/- (< 18.Qg5 Bg6=)) 16...Bg6?? ( 16...Bg5 17.Ng5 Nf6=) 17.Ne6+– Bf5?? 18.Nd8 Bg4–/+ 19.Nb7 Rab8 20.Na5 Rb5 21.Bc3 Nd5 22.Nb3 Nc3 23.Nc3–/+ e4?? 24.Nb5+– Ba1 25.Na1 Rb8 26.c4 a6 27.Nc3 ed3 28.Bd3 h6 29.Nb3 Ne5 30.Bf1 Nf3+/- 31.Ke2 Nd4 32.Kd3 Nb3 33.ab3 Rb3 34.Rg1 Bf5+= 35.e4 Be6 36.f4 Rb4 37.Nd5 c6?? 38.Ne7 Kf7 39.Nc6 Rc4 40.Nd8 Ke7 41.Ne6 Rc1 42.Ng7 a5 43.Nf5 Kf6 44.Nd6 a4 45.e5 Ke6 46.Bh3 Kd5 47.Rc1 a3 48.Ra1 h5 49.Ra3 h4 50.Ra5 Kc6 51.Kd4 Kb6 52.Rb5 Kc6 53.Rd5 Kc7 54.Nb5 Kc6 55.Nc3 Kc7 56.e6 Kc6 57.e7 Kc7 58.e8Q Kb6 59.Qb5 Kc7 60.Rd7 (60…Kc8 61.Qb7#) 1–0. MasterofDisaster – Wookie2004, Caissa's Web, 2004.

5.d3 Be7 6.Qf3 Bg6 (better 6...Qc8!? 7.Be2 c6=+) 7.Qb7+= Nbd7 8.Ba3 0-0 9.Ne2 (9.Nc3 Rb8 10.Qa6 Qc8 11.Qc8 Rfc8+=) 9...Nc5 (9...a6!?=) 10.Bc5+– dc5 11.e4 (11.Nd2 c4 12.Nc4 Bb4 13.c3 Qd3 14.cb4 Qc4=) 11...Bh5 (11...c4!? 12.Nbc3 cd3 13.cd3 Qd3=+) 12.Ng3 Bg6 13.Nc3 Qd4 14.Kd2 (better 14.Nge2 Qd6 15.Nd5+=) 14...Ng4 The mate threat is Bg5 15.Be2?? (15.Nge2 Bg5 16.Kd1 Qf2-+ (16...Nf2 17.Ke1 Qe3 18.Nd5 Nd3 19.cd3 Qd2 20.Kf2–/+)) 15...Qf2 (15...Bg5 16.f4 Bf4 17.Ke1 Qc3 18.Kf1 Qa1 19.Bd1 Qd1) 16.Raf1?? (better 16.Nd5 Bg5 17.Kc3-+) 16...Qe3 (16...Bg5 17.Kd1 Qe3 18.Rf4 Bf4 19.Ke1 Qd2 20.Kf1 Nh2 21.Rh2 Bg3 22.Kg1 Qe1 23.Bf1 Bf2 24.Kh1 Qf1) 17.Kd1 (17.Ke1 Bg5 18.Rf5 Bf5 19.Nf5 Qd2 20.Kf1 Qc3 21.g3 Ne3 22.Kf2 Nf5 23.ef5 Qc2 24.Qd5-+) 17...Nf2 (17...Bg5 18.Rf4 Bf4 19.Ke1 Qd2 20.Kf1 Nh2 21.Rh2 Bg3 22.Kg1 Qe1 23.Bf1 Bf2 24.Kh1 Qf1) 18.Ke1 (18.Rf2!? Qf2 19.Qc7–/+) 18...Nh1-+ 19.Rh1 c4 20.Qc7? (20.Qc6 cd3 21.Nd5 d2 22.Kd1 Qa3 23.Kd2 Bg5 24.Ke1 Bh4-+) 20...Bh4 (better 20...Bb4 21.Qc4 Ba5-+) 21.Qc4 Bg3 (21...Rac8 22.Nd5 Qc1 23.Kf2 Qh1 24.Ne7 Kh8 25.Qd5 Qh2 26.Qe5 Rc2 27.Nef5 Bf5 28.Kf3 Be4 29.de4 Rc3 30.Bd3 Rd3 31.Ke2 Rg3 32.Qg7 Kg7 33.a3 Rd8 34.a4 Qg2 35.Ke1 Rgd3) 22.hg3 Qg3 23.Kf1 Rac8 24.Qb3 Qf4 (24...Qg5 25.Ke1-+) 25.Ke1–/+ a6 (25...Rc5 26.Nd5 Qg3 27.Kf1–/+) 26.Nd5 (26.ba6 Qg3 27.Kf1 Rc3 28.Qc3 Be4–/+) 26...Qg3 27.Kf1 (27.Kd1 Qg2 28.Re1–/+) 27...Rfe8 (27...Qg5 28.Ke1-+) 28.Rh3 (better 28.b6!?=+) 28...Qg5-+ 29.Ne3 ab5 30.Rf3 (30.Bg4 Ra8-+) 30...Bh5 31.Rf5? (31.Rh3 Be2 32.Ke2-+) 31...Be2 (31...Qe3 32.Bh5 Qc1 33.Kf2 Rc2 34.Kg3 Qe1 35.Kh2 Qh4 36.Kg1 Rc1 37.Bd1 Qe1 38.Rf1 Qe3 39.Kh2 Re6-+) 32.Ke2–/+ Qg6 33.Qd5 (33.Qb5 f6–/+) 33...h5 (better 33...b4!?-+) 34.Qe5?? (better 34.Qb5 h4 35.a4=+ (worse 35.Re5 Rc2 36.Kd1 Re5 37.Qb8 Kh7 38.Kc2 Ra5-+)) 34…Re5 (34...Re5 35.Re5 Rc2 36.Nc2 Qg2 37.Ke3 Qg1 38.Kf3 Qf1 39.Ke3 Qc1 40.Kf3 Qc2-+) 0–1. aravind555 (1790) – TwoPawnSacrifice (1855), lichess.org, 2020.

5.Bd3 Nbd7?? 6.Bf5+– g6 7.Bd7 (7.Bh3 a6+–) 7...Qd7 8.f4 (better 8.c4!? Bg7+–) 8...Qb5 9.Bc3 Bg7 10.fe5 de5 11.Be5?? (better 11.Qe2 Qe2 12.Ne2+–) 11...Qe5=+ 12.Nc3 (12.c3 Qg5=+) 12...0-0 (12...Ne4 13.d4 Qa5-+ (13...Nc3?! 14.de5 Nd1 15.Rd1–/+)) 13.Nge2 (13.Rb1 Nd5 14.Nd5 Qd5=) 13...Ng4 (better 13...Rad8=+) 14.Ng3?? (14.h3 Nf6=) 14...Rad8 (better 14...Ne3 15.de3 Qc3 16.Kf2 Rad8-+ (16...Qa1?! 17.Qa1 Ba1 18.Ra1-+)) 15.Qg4+= Rfe8? (15...Rd2 16.Nd1 Rg2=+) 16.0-0?? (better 16.Rd1+–) 16…Qe4?? (better 16...Rd2 17.Qe4 f5 18.Qc4 Qe6 19.Qe6 Re6=+) 1–0. aravind555 (1700) – fferrazdeo (1770), lichess.org, 2020.

5.d4 ed4 6.Bd4= Nbd7 (6...d5 7.Nf3=) 7.Nd2 Be7 (7...d5 8.Ngf3=) 8.Ngf3 (8.Qf3 Be6 9.Qb7 0-0+=) 8...c5 9.Bb2 (9.bc6 bc6 10.Bd3 Be6=) 9...0-0 10.Be2 Nb6 11.Nh4 (11.a4 a5=) 11...Be6 12.Nhf3 (12.a4 Nfd5 13.Nhf3 Bf6 14.Bf6 Qf6=) 12...Qc7 (12...Na4 13.Qc1=+) 13.Ng5 (13.a4 Rae8=) 13...d5 (13...Na4 14.Ne6 fe6 15.Rb1=+) 14.0-0 (14.a4 Nbd7=) 14...h6 (14...Na4!? 15.Rb1 Bd6–/+) 15.Ne6= fe6 Black gets in control 16.f4 (16.a4 c4 17.a5 Nbd7=) 16...Rad8 (16...Na4 17.Be5 Bd6 18.Nf3=+) 17.Be5 (17.a4 Nbd7=) 17...Bd6 18.Nf3 Ng4 (18...Ne4 19.Bd3=+) 19.Bd6= Qd6 20.Nh4?? (better 20.Qd2=) 20...Ne3-+ 21.Qd3 (21.Qd2 Nf1 22.Rf1 e5 23.fe5 Qe5 24.Rf8 Rf8-+) 21...Nf1 22.Rf1 (22.Ng6 c4 23.Qd4 Rf6-+) 22...Rf6 (22...Rf4 23.Nf3-+) 23.g3 (23.Qe3 d4 24.Qe4 c4-+) 23...Rd7 (better 23...c4!? 24.Qe3 d4 25.Qe4-+) 24.Nf3 Nc4 (24...c4 25.Qe3-+) 25.c3? (better 25.Qc3-+) 25...Rdf7 26.Bd1 (26.Qb1 Ne3 27.Re1 c4-+) 26...e5 27.fe5 Ne5 28.Ne5 (28.Qe3-+) 28...Rf1 29.Kg2 (29.Qf1 Rf1 30.Kf1 Qe5-+) 29...Qe5 (better 29...R7f2 30.Kh3 Rh1 31.Qd5 Qd5-+) 30.Be2 (30.Qf1 Rf1 31.Kf1 Qc3 32.b6 ab6 33.Bg4-+) 30...R7f2 31.Kh3 0–1. aravind555 – lucky13490, lichess.org, 2018.

5.d4 Nd5 6.de5 (6.Qf3 Ne7 7.de5 d5+–) 6...Nb4 7.Na3 Be7? (better 7...de5!? 8.Qd8 Kd8+=) 8.ed6 (better 8.c3!? de5 9.Qd8 Kd8 10.0-0-0 Kc8 11.cb4 Bb4+–) 8...Bd6 9.Bg7 Rg8 10.Bc3 Nd5?? (better 10...Be4 11.Nf3 Nd5+–) 11.Bb2 (better 11.Qd5 Be6 12.Qb7+–) 11...Bb4= 12.c3 Ba3? (better 12...Nc3 13.Qd8 Kd8=) 13.Ba3+– Nc3 14.Qd8 Kd8 15.Nf3 (15.Bb2 Na4 16.Bf6 Kc8+–) 15...Nd7 16.g3 (better 16.Bb2!? Na4 17.Bd4+–) 16...Be4+= 17.Bg2 Bf3 (17...Nb5 18.Bb2+=) 18.Bf3+– Nb5 19.Bb2 Ke7 (19...Nd6 20.0-0-0+=) 20.0-0 (20.Bb7 Rab8 21.Bc6 Nd6+–) 20...Rad8 (20...Nd6!?+=) 21.Bb7+– Nd6 22.Bg2 Nf5 (better 22...c5!?+–) 23.Rac1 c5 24.Bc6 (24.Ba3!? Rc8+–) 24...Rc8+– 25.Bd7 Kd7 26.Rfd1 Ke7 (better 26...Ke6!?+–) 27.Rd5 Ke6?? (27...Nh4 28.Rcd1 Nf3 29.Kg2+–) 28.Rdc5 (better 28.Re5 Kd6 29.Rf5+–) 28...Rc5 29.Rc5 Rd8 (29...Rb8 30.Re5 Kd6+–) 30.Re5 (30.Re5 Kd6 31.Rf5+–) 1–0. aravind555 (1685) – gengulfus (1675), lichess.org, 2020.

5.d4 e4 6.Ne2 (6.d5 Be7=) 6...Bg4 (6...d5 7.c4=+) 7.h3 Be2 (7...Bd7 8.c4=) 8.Be2 d5 9.0-0 c6 10.a4 (10.Nd2 cb5 11.Bb5 Nc6=) 10...Bd6 11.c4 0-0 12.c5 Be5?? (12...Bc7 13.Qb3=) 13.Nc3 (13.de5 Nfd7+–) 13...Nbd7?? (13...Bc7 14.Rb1+=) 14.Qc2 (better 14.de5 Ne8 15.a5+–) 14...Rc8?? (better 14...Bb8+=) 15.Nd1?? (15.Nd1 Bb8 16.f4=; better 15.de5 Ne5 16.Ne4 Ne4 17.Be5+–) 1–0. aravind555 (1620) – kdeny (1630), lichess.org, 2019.

5.Ne2 a6 6.a4 ab5 7.ab5 Ra1 8.Ba1 Qd7 (8...Nbd7 9.Ng3 Bg4 10.f3=) 9.c4 d5 (9...Bd3 10.Qb3 Bg6 11.d4=) 10.Ng3 (better 10.Be5 Ng4 11.Bf4 dc4 12.Nec3+=) 10...e4?? (10...dc4!? 11.Nf5 Qf5 12.Bc4 Nbd7=) 11.Nf5 (11.Bf6!? gf6 12.Nc3 dc4 13.Bc4+– (13.Nce4?! Be4 14.Ne4 Qb5+–; 13.Nge4?! Be4 14.Ne4 Qb5+–)) 11...Qf5 12.cd5 (12.Bf6!? Qf6 13.Nc3+–) 12...Nd5= (worse 12...Qd5 13.Bf6 gf6 14.Nc3+–) 13.Bc4 Nb4 (13...Nd7 14.0-0=) 14.0-0+= Nd7 15.Nc3 (15.f3 f6 16.fe4 Qe4 17.Bd4+=) 15...Be7 (15...Ne5 16.Be2 Bd6 17.Qb1=) 16.Qb3 (16.Qb1+–) 16...Nd3? (better 16...0-0!? 17.f3 ef3 18.Rf3 Qg6+–) 17.Ne4!+– Qe4 Decoy theme: e4 (17...N7c5 18.Nc5 Nc5 19.Qb2+–) 18.Bd3 Qg6?? (18...Qh4 19.Qd5 Nc5 20.Bg7 Rg8+–) 1–0. aravind555 (1805) – Tails96 (1860), lichess.org, 2020.

5.Nf3 Nd5 6.Bc4 Nb4 (6...Nb6!? 7.Bb3 a6=) 7.Bb3+/- a5 (7...c6 8.Nc3 cb5 9.e4+/-) 8.Nc3+- Nd7 (8...a4 9.Na4 c5 10.a3+-) 9.e4 Bg4? (9...Be4 10.Ne4 a4+-) 10.a3 a4 (10...Nc5 11.ab4 ab4 12.Ra8 Qa8 13.Nd5+-) 11.Ba4 (11.ab4?! ab3 12.Ra8 Qa8 13.cb3 Be7+/-; worse 11.Na4 d5 12.h3 Bf3 13.Qf3 c5 14.ab4 c4 15.ed5 cb3 16.Qb3 Bd6+-) 11...Nd3 (11...Bf3 12.gf3 (12.Qf3?! Ra4 13.ab4 Rb4+/-) 12...Nc2 13.Bc2+-) 12.cd3 Nc5 13.Bc2 Be7 14.h3 Bh5 15.g4 Bg6 16.d4 ed4 17.Nd4 Bh4 (17...Bf6 18.Nf5+-) 18.0-0 0-0 19.Qf3 Ne6 20.Nd5 Ng5 (20...Nd4 21.Bd4 c6 22.Ne3+-) 21.Qe3 (21.Qc3 f6+-) 21...c6 (21...Re8 22.Nf5 Bf5 23.gf5+-) 22.bc6 bc6 23.Nc6 Qe8 (23...Qd7 24.Nce7 Kh8 25.Qc3+-) 24.Nce7 (24.f4!? Nh3 25.Kg2 Nf4 26.Rf4 Kh8+-) 24...Kh8 25.Ng6 fg6 26.f4 Nf7 (26...Ne6 27.a4+-) 27.Qc3 Bf6 (27...Rg8 28.Nc7 Bf6 29.e5+-) 28.Nf6 Qe7 29.Ne8! Nh6 (29...Rae8 30.Qg7 Mate attack; 29...Qe8 30.Qg7 Mate attack; 29...Rfe8 30.Qg7 Mate attack) 30.Ng7 Kg8 31.Bb3 Nf7 32.Ne8! Qa7 (32...Rae8 33.Qg7 Mate attack; 32...Qe8 33.Qg7 Mate attack; 32...Rfe8 33.Qg7 Mate attack) 33.Kh1 (33.Kh1 Qd4 34.Qd4 Rfe8 35.Qg7) 1-0. DEFFM – amedved, freechess.org, 2021.

5.Nf3 e4 6.Nd4= Bg6 7.c4 Nbd7 8.Be2 Be7 9.Nc3 0-0 10.0-0 Nc5 11.Nb3 Nfd7 12.f3 f5 13.d4 (13.Nd5 a6=) 13...ed3+= 14.Bd3 Bf6 15.f4 Re8 16.Qd2 a6 17.Rfe1 ab5 18.Nc5 Nc5 (worse is 18...dc5 19.cb5 Nb6 20.Qc2=) 19.cb5 Nd3 20.Qd3 c6 21.a4 Qd7 (21...Qb6 22.Kh1+= (22.Qd6? Re3 23.Kh1 Bc3 24.Bc3 Rc3-+)) 22.Qd2 Bf7 23.Nd1 Bb2 24.Nb2 (24.bc6 bc6 25.Nb2 Bd5+=) 24...Re4 (24...cb5 25.a5–/+) 25.Qc3 (25.bc6 bc6 26.a5 c5=) 25...Bd5 26.Kf2 (26.Qd2 Qe6–/+) 26...Qe7 27.g3 (27.bc6 bc6 28.a5 Qh4 29.Kg1 Re6–/+) 27...Qf6 (better is 27...Qe6–/+) 28.Qd2 0–1. Gross,Wilhelm – Merten,Rainer, xvi/12, 1988.

5.Nf3 g6 6.c4 Nbd7 7.Nc3 Bg7 8.Be2 0-0 (8...Qe7 9.0-0=) 9.d4 Ne4 (9...e4 10.Nd2=) 10.0-0 (10.Ne4 Be4 11.0-0 ed4 12.Bd4 Re8=) 10...c5 (10...Nc3 11.Bc3 a6 12.Bd3=) 11.Ne4+= Be4 12.de5 (12.Bd3 f5 13.Qe2 ed4 14.ed4 d5=) 12...Ne5= 13.Ne5 de5 14.f3 Bf5 15.e4 Be6 16.Qc2 (16.f4 f5 17.ef5 Rf5+=) 16...Qg5= 17.Bc1 Qe7 18.Be3 b6 (18...f5 19.ef5 Bf5 20.Bd3=) 19.Rad1 Rfd8 20.Rd8 Rd8 21.Rd1 Rd1 22.Qd1 ½–½. Rongen – Kuurstra, Helmond, 1994.

5.c4 Nbd7

6.a4 a6 7.Nf3 ab5 8.ab5 Ra1 9.Ba1 Nc5 10.Be2 (10.d4 ed4 11.Bd4 Be7=) 10...c6 (better 10...Nd3!? 11.Bd3 Bd3–/+) 11.0-0 (11.d4 ed4 12.Nd4 Bb1 13.Qb1 Qa5 14.Kf1 Qc7+=) 11...Qa5 (11...Bd3 12.Bd3 Nd3 13.Qc2+=) 12.Nc3+= Nce4 13.Qb3 Nc3 (13...Nc5 14.Qb2+=) 14.Bc3 (14.dc3?! Ne4=+) 14...Qc7 (14...Qd8 15.Ra1+=) 15.d4 (15.Ra1 Qc8+–) 15...ed4 (15...e4!? 16.Nh4 Bc8+–) 16.Nd4+– Bd7 17.Bf3 (17.Ra1 Qc8 18.Bf3+–) 17...c5 (17...Be7 18.Rb1 c5 19.b6+–) 18.Ne2 (18.b6 Qd8 19.Ne2 Be7+–) 18...Be7+– 19.Ra1 0-0 20.Ng3 Bg4 21.Bf6 (better 21.b6 Qd7 22.Bb7 Qb7 23.Ra7+–) 21...Bf3?? (better 21...Bf6 22.b6 Qe7=) 22.Be7 (22.b6 Qd7 23.Be7 Qe7 24.gf3 Qf6+–) 22...Qe7 23.gf3 h5 (23...Re8 24.Qd1+–) 24.Qd3 (24.Qd1 Qe6 25.Nh5 g6+–) 24...h4 (24...Qf6 25.Ra7 Qf3 26.Qf5 (26.Qd6?! h4+–) 26...Qd1 27.Kg2+–) 25.Nf5 Qg5 26.Kf1 g6 (26...h3 27.Qe4+–) 27.Nd6 Qe5 (27...Rd8 28.Ne4 Qe7 29.Qc3+–) 28.Rd1 (28.Ra7 b6+–) 28...Rd8 (28...Qh2 29.Nb7 h3 30.Nc5+–) 29.Ke2 (29.Qd5 Qd5 30.Rd5 Rd7+–) 29...Qh2 30.Qe4 (better 30.Qd5 Rf8 31.f4+–) 30...Rd6+– 31.Rd6 Qd6 32.Qb7 The passed pawn on b5 will quickly become a dangerous weapon 32...Qe6 (better 32...Kg7+–) 33.Qc6?? (better 33.Qe4 Qf6 34.Qg4+–) 33...Qc4=+ 34.Ke1 Qb4 35.Ke2 c4 (35...h3!? 36.Qc8 Kg7 37.Qh3 Qb5 38.Kd2 c4=+) 36.b6 (36.Qe8 Kg7 37.Qe5 Kh7=) 36…Qb2 (36...Qb2 37.Kf1 h3=+). RichardSommer (2090) – EmrushAsllani (2100), lichess.org, 2020.

6.a4 e4 7.Ne2 Ne5 Threatening mate... how? 8.Ng3 Bg6 9.Be2 Be7 10.0-0 c6 (10...h5 11.h3=+) 11.Be5 de5 12.Nc3 0-0 13.f3 (13.Qc2!?=) 13...ef3=+ 14.Bf3 cb5 (14...Bd3 15.Be2=+) 15.ab5= Rb8 (15...Bd3 16.Bb7 Rb8 A) 17.Ra7? Bf1 18.Qf1 Bc5-+ (18...Qd2?! 19.Nce4 Qe3 20.Qf2–/+); B) 17.Bd5=) 16.Nd5 (16.Ra7 Bb4 17.Nd5 Nd5 18.Bd5 Ba5+–) 16...Nd5 (16...e4 17.Bh5 Nd5 18.Bg6 hg6 19.cd5 Qd5 20.Ra7=+) 17.Bd5+= Qb6 18.Kh1 Bc5 (18...Rbd8 19.Qf3=) 19.Qb3 Rfd8 (19...Rbd8 20.Nf5=) 20.Qc3+= Kh8 (better 20...Re8!?+=) 21.Qe5+– f6 The passed pawn on d2 quickly leads to threats 22.Qc3 Re8 (22...Qd6 23.d4 Bb4 24.Qb3+–) 23.d4 Bd6 24.c5 Qc7 (24...Qb5 25.Ra5 (25.cd6?! Qd5 26.Qc5 Qe6=) 25...Re3 26.Rb5 (26.Qe3?! Qa5 27.Be4 Be4 28.Ne4 Bc7=) 26...Rc3 27.cd6+–) 25.Ra7 Bg3 26.hg3 Qg3 27.Bf3 (27.Rb7 Rb7 28.Bb7 Re3+–) 27...Be4 (27...b6 28.cb6 Rb6 29.Bc6+–) 28.Kg1+– Bf3 29.Rf3 Qg5 30.Ra1 (30.Qd3 Qd5+–) 30...Rbc8 (30...b6 31.Rb1+–) 31.b6 (31.Qd3 Qd5+–) 31...Rc6 (31...Qd5 32.Ra7+–) 32.Raf1 (32.Ra7 Qd5+–) 32...Rec8 (32...Rce6 33.Qd2+–) 33.Qe1 (33.Qb3 Qg6+–) 33...Qg6 34.Qf2 Re6 35.Rg3 Qf7 36.Qf4 (36.Rh3 Rce8+–) 36...Qe7 37.Rff3 Re8 38.d5 (38.Rh3 Re4 39.Qf5 h6+–) 38...Re4 (better 38...Re5 39.d6 Qd7+–) 39.d6?? (39.Qc7 Rc4 40.d6 Qf8+–) 39...Qd7?? (better 39...Qd8 40.Qf5 R8e5=+) 40.Qf5+– Qc6?? (40...R8e6+–) 41.d7 (41.Rg7! Rh4 42.Rfg3 Qd6 43.cd6 Rd8 44.Rh7 Rh7 45.Qf6 Rg7 46.Qg7) 41...Rd8+= 42.Rg4 (42.Rh3 h6 43.Qg6 Re7+–) 42...Rg4 (42...Re5!? 43.Qd3 Rc5= (worse 43...Qd7 44.Rd4 Rd5 45.Rff4+–)) 43.Qg4= Qd7 (43...Rd7 44.Rf4 Rd5 45.Rd4+=) 44.Qd7+= Rd7 45.Rf4 Kg8 46.Rb4 (46.Rd4 Re7 47.Ra4 Re3+–) 46...Kf7? (better 46...Rd1 47.Kf2 Rc1+=) 47.c6+– bc6 (47...Rd1 48.Kf2 Rd8 49.Rd4+–) 48.b7 Rd1 49.Kh2 Rd8 50.b8Q Rb8 51.Rb8 Ke6 52.Rc8 c5 (52...Kd6 53.g4+–) 53.Rg8 (53.Rc5 Kf7+–) 53...Kd5 (53...g5+–) 54.Rg7 Ke4 55.Rh7 Ke3 56.Re7 Kd4 57.Rf7 c4 (57...Ke5 58.Rh7+–) 58.Rf6 c3 59.Rf1 c2 60.g4 Kd3 (60...Ke5 61.g5 c1R 62.Rc1+–) 61.g5 Kd2 62.Rf2 Kd1 63.Rc2! Kc2 64.g6 Kd3 65.g7 Ke4 66.g8Q Ke5 67.Qg2 Kd4 68.Kg1 Kc3 (68...Kc5 69.Kf2+–) 69.Kf2 (69.Qd5 Kc2 70.Kf2 Kc3 71.Ke3 Kc2 72.Qd3 Kb2 73.Kd2 Ka2 74.Kc2 Ka1 75.Qa6) 69...Kb4 (69...Kd3 70.Qd5 Kc3 71.Ke3 Kc2 72.Qc4 Kb2 73.Kd3 Kb1 74.Qb5 Kc1 75.Kc3 Kd1 76.Qf1) 70.Qf3 (70.Qd5 Kc3 71.Ke3 Kc2 72.Qd3 Kb2 73.Kd2 Ka2 74.Kc2 Ka1 75.Qa6) 70...Kc5+– 71.Ke3 Kd6 72.Qe4 Kd7 73.Kd4 Kc7 (73...Kd6 74.Qd5 Kc7 75.Kc5 Kc8 76.Kc6 Kb8 77.Qb3 Kc8 78.Qg8) 74.Qe5 (74.Qe6 Kb7 75.Kc5 Kc7 76.Qe7 Kc8 77.Kc6 Kb8 78.Qb7) 74...Kb6 75.Kc4 Ka6 (75...Kc6 76.Qf6 Kb7 77.Kc5 Kb8 78.Qe7 Kc8 79.Kc6 Kb8 80.Qb7) 76.Qe6 (76.Qb8 Ka5 77.Qb5) 76...Kb7 77.Qd6 (77.Kb5 Kc7 78.Qe7 Kc8 79.Kc6 Kb8 80.Qb7) 77...Kc8 78.Qe7 Kb8 79.Kb5 Ka8 (79...Kc8 80.Kc6 Kb8 81.Qb7) 80.Kb6 Kb8 81.Qd8 1–0. BeepBeepImAJeep (2605) – sagitario13 (1980), lichess.org, 2017.

6.Nc3 Nc5 7.d3 Be7 8.Be2 0-0 9.e4 Bg6 (9...Be6 10.Nf3+=) 10.Nf3= Nh5 11.0-0 Nf4 12.Nd5 Ne2 13.Qe2 Bh5 14.Ne7 (14.d4 ed4 15.Bd4 Ne6=) 14...Qe7 15.a4? (better is 15.Qe3!?=) 15...f5–/+ 16.Qc2? (better is 16.Qe3 fe4 17.Ne1–/+) 16...fe4-+ 17.de4 (17.Ne5 de5 18.de4-+) 17...Rf3 (17...Bf3?! 18.gf3 Rf3 19.Rae1-+) 18.h3 Rf4 (18...Qg5!? 19.Kh2 Qf4 20.Kg1-+) 19.f3 Raf8 (19...Rff8 20.Bc1-+) 20.Ra3 (20.Bc1 R4f7-+) 20...Qe6 (20...Qe6 21.Bc1 R4f6-+; better is 20...Ne4!? 21.Bc1 Ng3 22.Re1-+) 0–1. Gross,Wilhelm – Merten,Rainer, xvi/14, 1988.

6.Nc3 Nc5 7.d4 ed4 8.Qd4 (worse is 8.ed4 Qe7 9.Be2 Nd3 10.Kf1 Nb2–/+) 8...Ne6 9.Qd1 Be7 (9...Ng5 10.Nf3 Ne6 11.Be2+=) 10.Nf3 (10.Qf3 Bg4 11.Qb7 0-0+=) 10...0-0 11.Be2 Re8 12.0-0 Nc5 13.Nd4 Bg6 14.Bf3 Rb8 15.Be2 Nfe4 (15...a6 16.ba6 Na6 17.Nd5=) 16.Nd5 Bf8 (16...Bh4!?=) 17.a4+= Nf6 18.Nf4 Be4 19.Bf3 (19.f3 g5+/-) 19...Qd7 20.Be4 Re4 21.Nf3 Ng4 22.Qc2 f6 (22...Qf5 23.Rfc1+=) 23.h3 Nh6 24.Rad1 Qf7 25.Nd2 Ree8 26.Nf3 (26.Bd4 Ra8+/-) 26...Re4 27.Nd2 (27.Bd4 c6+/-) 27...Ree8 28.e4 Rbd8 29.Rfe1 Qd7 (29...f5 30.ef5 Nf5 31.Nd5+=) 30.Nd5 (30.Bd4 f5+/-). Gross,Wilhelm – Merten,Rainer, xvii/09, 1988.

6.Nc3 Be7 7.Nge2 0-0 8.Ng3 Bg6 (8...Be6 9.Qf3=+) 9.d4 (9.f4 ef4 10.ef4 h6=) 9...Re8 10.Bd3 (10.Be2 c5=) 10...ed4=+ 11.Bg6? (11.ed4 d5 12.0-0 Bd3 13.Qd3 dc4 14.Qc4 Nb6=+) 11...hg6?? (better 11...dc3 12.Bf7 Kf7 13.Bc3 a6-+) 12.Qd4= Nb6 13.0-0 c6 (13...Nfd7 14.Nge4=) 14.Nce4 (14.a4 d5 15.cd5 cd5+=) 14...c5 (14...d5 15.cd5 Qd5 16.bc6 bc6 17.Nf6 Bf6 18.Qd5 Nd5 19.Bf6 gf6 20.Rac1=) 15.Qd3 (15.Qc3=) 15...Nbd7 (15...d5 16.Nf6 gf6 17.cd5 Qd5 18.Qb1=) 16.Nd6 (better 16.Bf6 gf6 17.Rfd1+– (17.Nd6 Ne5 18.Qe4 Bd6-+)) 16...Nb6=+ 17.Rad1 (17.Bf6 Qd6 18.Qd6 Bd6 19.Bh4=+) 17...Bd6 (17...Qd6 18.Qd6 Bd6 19.Rd6 Nc4 20.Rf6 gf6 21.Bf6-+) 18.Qd6 (better 18.Bf6 Qf6 19.Qd6 Qd6 20.Rd6 Nc4 21.Rd7=) 18...Qd6–/+ 19.Rd6 Red8?? (better 19...Nc4 20.Rf6 gf6 (20...Nb2?! 21.Rd6=) 21.Bf6 a6-+) 20.Rd8+– Rd8 21.Bf6 gf6 22.Rc1 Na4 (22...f5 23.Nf1+–) 23.Ne4 b6? (better 23...Kg7+–) 24.Nf6+– Kg7 25.Nd5 Nb2 26.e4 Nd3 (26...Re8 27.f3 f5 28.ef5 gf5+–) 27.a4?? (27.Rc3 Nb2+–) 27...Ne5 (better 27...Nc1 28.Kf1 Nd3-+) 28.f4+– Ng4 (28...Nd3 29.Rc3 Nb4 30.a5+–) 29.h3 ½–½. aravind555 (1760) – Stiemser (1750), lichess.org, 2020.

6.Nc3 Be7 7.Qf3 Bg4 8.Qb7 0-0+=.

6.Nc3 Be7 7.Nf3 Nc5 (7...0-0 8.Be2+=) 8.d4= ed4 9.Nd4 Bg6 10.Be2 0-0 11.0-0 Re8 12.Nb3 Nfd7 13.Nd5 Bf8 (13...a6 14.Bf3=) 14.Nd4 Rc8 15.Nf4 Ne5 16.Ng6 Ng6 17.Bg4 Rb8 18.Qc2 Qg5 19.Be2 Nh4 Do you see the mate threat? 20.g3 Ng6 21.Nf3 Qe7 22.Rad1 Qe4 23.Qe4 Re4 24.Ng5 (24.h4 Ree8+/-) 24...Ree8+= 25.Bh5 (25.Bd4 Be7 26.Bc5 dc5+=) 25...h6 26.Nf3 Rbd8 27.Nd4 (27.Bd4 Ne6+=) 27...Ne5= 28.Be2 Na4 29.Ba1 Nb6 30.Rc1 Na4 31.Nf3 Nc5 32.Ne5 de5 33.Rfd1 ½–½. Gross,Wilhelm – Merten,Rainer, xvi/16, 1988.

6.Nf3 a6 7.a4 ab5 8.ab5 Ra1 9.Ba1 Be7 10.Nc3 e4 (10...0-0!?+=) 11.Nd4= Bg6 12.Be2 0-0 13.0-0 Nc5 14.f3 d5 (14...ef3 15.Nf3 Qd7 16.Nh4=) 15.cd5 Nd5 16.Ne4 Ne4 17.fe4 Be4 18.Bf3 Bf3 19.Qf3 Bc5?? (better is 19...g6+=) 20.Nf5+– f6 21.d4 Bb4 22.e4 g6 23.Ng3 (23.ed5?! gf5 24.Qf5 Qe8+/-) 23...f5 24.ed5 Qd6 25.Ne2 Bd2 26.Bb2 Re8 27.Bc1 Bc1 28.Nc1 (better is 28.Rc1!? Re4+–) 28...Re4 29.Qd3 Qd5 30.Ne2 Kg7 31.Rd1 Qd6 32.Nc3 Re8 33.Qc4 White plans d5 33...Re7 34.Qc5 Qd8 (34...Rd7 35.Qd6 Rd6 36.Kf2+–) 35.Nd5 Rd7 36.Nf4 Qf6 (36...Qe7 37.Qc3 Qd6 38.d5 Kg8 39.Re1 Qb6 40.Kh1 Qb5 41.Re8 Kf7 42.Qe1+–) 37.d5 (37.Re1 b6 38.Qc4 h6+–) 37...b6 (37...Qb6 38.Qb6 cb6+–) 38.Qc6 Qd6 (38...Rf7+–) 39.Ne6 Kf6 40.Nc7! Qc6 (40...Rc7 41.Qd6 Double attack (41.Qd6 Deflection; 41.Qd6 Decoy; 41.Qd6 Remove defender; 41.Qd6 Overloading)) 41.bc6 (41.dc6? Rd1 (41...Rc7? 42.Ra1+–) 42.Kf2 Ke5-+) 41...Rc7 (41...Rd8 42.d6 g5 43.Nd5 Kg6+–) 42.d6 Rc6 43.d7 1–0. Taulien,Hans_Juergen (2350) – Staats,Carsten (2315), remoteschach.de, 2002.

5.Bd3 Bd3

6.cd3 a6 7.Ne2=+.

6.cd3 Nbd7 7.Nf3 c6 8.bc6 bc6 9.0-0=.

6.cd3 Nbd7 7.Nf3 Be7 8.e4 (8.0-0 c6=+) 8...Nc5 (8...a6 9.ba6 Ra6 10.0-0=+) 9.0-0 (9.Qc2!?=+) 9...Nd3–/+ 10.Qb3 Nb2 11.Qb2 Ne4 12.d4 Bf6 13.de5 Be5?? 14.Ne5+/- de5 15.Nc3?? Nc3 16.Qc3=+ 0-0 17.Qe5 Qd6 18.Qf5 Rae8 19.Rad1 Qb6 20.Rd7 Qe6 21.Qd3 Qe2 22.Qb3 Qe1 23.Rc7+= Qe6 24.Qa4 Qb6 25.Rcc1 Re2 26.a3 Rfe8 27.Qc4 h6 28.h4 Qf6 29.Rcd1 R8e4 30.Qc8= Kh7 31.Qb7 Rh4 (31...Rh4 32.Rd7 Qf4=). pinecrest1981 – SoulessTeenWitch, Live Game Caissa's Web, 2005.

6.cd3 Nbd7 7.Nf3 g6 8.0-0= Bg7 9.Nc3 0-0 10.Rb1 a6 11.a4 ab5 12.ab5 Qc8 (12...Re8 13.Qc2=+) 13.Qb3 Nb6 14.Rfc1 Nfd7 15.Nd5 Nd5 16.Qd5 Nc5 (16...Nb6 17.Qb3=) 17.b6 (17.Be5 Be5 18.Ne5 Qf5+–) 17...c6 (17...cb6!? 18.d4 Qe6 19.Qe6 Ne6 20.de5 Ra2+=) 18.Qd6+– Ne6 (18...Nd7 19.Ra1 Nb6 20.Be5+–) 19.Be5 Rd8 20.Qc7?? (better 20.Qb4+–) 20...Nc7-+ 21.Bc7 (21.bc7 Rd3 22.Bg3 f5-+) 0–1. aravind555 – KittenBlender, lichess.org, 2018.

5.d4 Nbd7

6.Nc3 Be7 7.Nf3 c6 (7...0-0 8.de5 (8.h3 e4 9.g4 Be6 10.Ng5 Nd5 11.Ne6 Nc3 12.Nd8) 8...de5 (8...Ne5 9.Be2 a6 10.Nd4 Bd7 11.f4 Neg4 12.Qd3) 9.Bc4+= c6 10.0-0 Rc8 11.Bd3 Bd3 12.Qd3) 8.Be2= (8.Bc4 0-0 9.0-0 d5 10.de5 dc4 11.ef6 Nf6 12.bc6) 8...0-0 9.0-0 Qa5 (9...h6 10.h3 Qc7 11.Rb1 c5 12.d5) 10.Qd2 Rac8 (10...Qc7 11.Nh4 Be6 12.f4=) 11.e4+= Bg4 12.bc6 bc6 13.Nd5 Qd8 14.Nf6 Bf6 15.de5 Ne5 16.Ne5 Be2 17.Nf7 Rf7 18.Bf6 Rf6 19.Qe2 Rb8 (19...Qa5 20.Rab1+=) 20.Rab1 c5 (20...Rb6 21.Rfd1+/-) 21.Qc4+– Rf7 22.Rfd1 1–0. Anonymous – Anonymous, internet, 2011.

6.c4. Adam.

6.Be2 Be7 7.de5 Ne5 8.Nf3= Nfd7 9.Ne5 de5= 10.a4 0-0 11.0-0= Bf6 12.Bg4+= Bg4 13.Qg4 Nb6 14.Rd1 Qe7? 15.a5 Nc8 16.a6 b6 17.Nc3+– Nd6 18.Ra2 g6 19.Nd5+– Qd8 20.c4 Bg7 21.Raa1 f5+/- 22.Qe2 Rc8 23.Ra4 c6+= 24.Nc3 Qc7 25.Qd3 Rfd8 26.Qc2 cb5 27.cb5 Kh8 28.Qb3 e4 29.Nd5 Qc2=+ 30.Qc2 Rc2 31.Bg7 Kg7 32.Rb4 Rc5 33.Ne7 Kf7?? 34.Nc6= Rd7 35.Rb3? Ke8-+ 36.Rbb1 Nb5 37.Nb4 Rd1 38.Rd1 Nc3 39.Re1 Rc4 40.Nc2 Nb5 41.Na1 Nc7 42.Nb3 Ra4 43.Ra1 Ra1 44.Na1 Na6 45.Nb3 Kd7 46.h4. fifteenminutesofgame (2400) – funkade (2575), net–chess.com, 2004.

6.de5 de5 7.Nf3 Bb4 8.c3 Bc5 9.Be2 Qe7 10.0-0 0-0 11.c4 Rfe8 12.Nbd2 Rad8 13.Nb3 Bb6 14.a4 (14.Qe1 c6+=) 14...Nc5–/+ 15.Nbd2 Ba5 16.Qc1 Nd3 17.Bd3 Bd3 18.Re1 Ne4 19.Qd1? (better is 19.Ne4 Be1 20.Ng3–/+) 19...Qf6-+ 20.Ne4 (20.Bc1 Nc3 21.Qb3 Ne2 22.Re2 Be2-+) 20...Be4 21.Qe2 Bd3 22.Qd1 Bc4 23.Qc2 Bd3 (23...Be1?! 24.Re1 Bd3 25.Qc7-+) 24.Qc5 Be1 25.Ne1 Qd6 26.Qa7 (26.Rc1 Bf5 27.Qd6 cd6 28.f3-+) 26...Ra8?? (better is 26...Qb4 27.Nd3 Rd3 28.Be5 Re5 29.Qb8 Qf8 30.Qb7 Red5-+) 27.Qb7–/+ Reb8. Rosner,Dirk – Merten,Rainer, corr SOK–88–31, 1988.

6.Nf3. Adam.

5.Ne2 Nbd7

6.Ng3 Bg4 7.Be2= Be2 8.Qe2 Be7 9.d4 0-0 10.de5 d5?? (better 10...Ne5 11.0-0 a6=) 11.ef6+– Nf6 (11...Bf6 12.Nc3+–) 12.0-0 c6 13.a4 Qc7 14.c4 Ne4 (14...dc4 15.Qc4 Qd7 16.Qf4+–) 15.cd5 cd5 16.Qg4 (better 16.Ne4!? de4 17.Qg4 f6+–) 16...Bf6 17.Bf6 Nf6 18.Qg5 Rfe8 (18...h6 19.Qf5+–) 19.Nf5 g6 20.Qf6 (20.Qf6 gf5 21.Qf5+–) 1–0. aravind555 – h869, lichess.org, 2019.

6.Ng3 Bg6 7.c4 Be7 8.Nc3 c6 (8...Qc8 9.Be2=) 9.Be2 0-0 (9...h5 10.h4=) 10.0-0 d5 11.d3 (11.cd5 cd5 12.d4 e4+=) 11...Rc8 12.a4 (12.cd5 Nd5 13.Nd5 cd5=) 12...Qc7 (12...dc4 13.dc4 Nc5 14.f4 ef4 15.Rf4=+ (worse 15.ef4 Nd3 16.f5 Nb2 17.Qd8 Bc5 18.Kh1 Rfd8–/+)) 13.Rc1 (13.cd5 Nd5 14.Nd5 cd5+=) 13...Qb8 (13...dc4 14.d4=+) 14.e4 (14.f4 ef4 15.ef4 h6=) 14...dc4 15.dc4 Black creates threats along the open d–file 15...Rfd8 16.Qc2 Nc5 e4 seems the pivot of the position 17.Ba3? (17.Rfd1 Ne6=+) 17...Qc7 (17...Nce4!? 18.Be7 Ng3–/+) 18.Bc5 Bc5 19.Rfd1 Rd4 20.Rd2 Rcd8 21.Rcd1 Qb6 22.Bd3 Ng4 23.h3? (better 23.Nh1!?–/+) 23...Nf2!-+ 24.Rf2 Theme: Deflection from d3 (24.Kf2 Decoy to f2 24...Rd3 Discovered attack) 24...Rd3! Discovered attack 25.Rd3 (25.Qd3 Rd3 Theme: Double Attack) 25...Bf2 26.Kf1 Bd4 (26...Bg3 27.c5 Qa5 28.Rg3 cb5 29.ab5-+) 27.Nce2 c5 28.Nd4 (28.Nc3 Qe6 29.Nd5 f5 30.ef5 Bf5 31.Nf5 Qf5 32.Ke1 Qg5-+) 28...ed4 29.h4 (29.Rd2-+) 29...Qe6 (29...Qf6 30.Rf3 Qh4 31.Kg1-+) 30.Qe2 White plans h5 30...Qc4 (better 30...Qf6 31.Qf3 Qh4-+) 31.h5–/+ Qa4 32.hg6 hg6 (32...Qb5?! 33.gf7 Kf8 34.e5=) 33.Qb2 c4?? (better 33...a6 34.ba6 Qa6-+ (34...ba6?! 35.Kg1–/+)) 34.Rd4= Rc8 (34...Qa5 35.b6 (35.Rc4?? Rd1 36.Ke2 Qe1 37.Kf3 Rd3 38.Kg4 Qg3) 35...Rd4 36.Qd4 Qb6 37.Qc4=) 35.Ne2+= Qa5 (35...a6 36.ba6 Qa6 37.Ke1+=) 36.Nc3 Qb6 37.Qd2 Kh7 38.e5 Qe6 39.Rh4 (better 39.Ne4 Qf5 40.Kg1+–) 39...Kg8+= 40.Rd4 (40.Qd6 Qf5 41.Kg1 Qg5+=) 40...Qe5= 41.Rd8 Rd8 (41...Kh7 42.Rc8 Qf5 43.Qf2 Qc8 44.Qf7 Qf5 45.Qf5 gf5 46.Ke2+–) 42.Qd8+= Kh7 43.Qh4 Kg8 44.Qc4 Qf5 45.Ke1 Qb1?? (better 45...Qc2 46.Qc8 Kh7 47.Qh3 Kg8+=) 46.Nb1+– (46.Nb1 b6 47.Qa4+–) 1–0. aravind555 (1690) – CikathanChess (1770), lichess.org, 2020.

6.Ng3 Bg6 7.Bd3 c6 (7...Bd3 8.cd3 a6 9.ba6 Ra6 10.d4=+) 8.Bg6= hg6 9.a4 Qc7 10.c4 b6 (10...d5 11.cd5 Nd5 12.d4=) 11.Nc3 Nc5 (11...Rc8 12.d4=) 12.d4+= ed4 (12...Nb7 13.Rb1+=) 13.ed4+– (worse 13.Qd4 Nb3 14.Qd1 Na1 15.Ba1 Rh4–/+) 13...Ne6 (13...Ncd7+–) 14.Qe2 (14.bc6 d5 15.cd5 Nf4+–) 14...Be7 (14...d5!?=) 15.d5 (15.bc6 Nd4 (15...Qc6? 16.d5 Qd7 17.de6 Qe6 18.Nb5+–) 16.Nb5 Nb5 17.ab5 Kd8+–) 15...Nd4 16.Qd2 (better 16.Qd1!? c5 17.0-0+–) 16...Nb3= 17.bc6?? (better 17.Qd3 Na1 18.bc6=) 17…Nd2-+ (17...Nd2 18.Kd2 a6-+) 0–1. aravind555 (1625) – manny37 (1620), lichess.org, 2019.

6.Ng3 Bg6 7.d4 ed4 (7...h5 8.Nd2=+) 8.Bd4 Be7 9.Bd3 Nc5 10.Bg6 hg6 11.Bc5 dc5 12.Qd8 Bd8 (12...Rd8 13.Nc3=) 13.c4 Be7 14.Nd2 0-0-0 15.Nf3 Ng4 (15...Bd6 16.Ne2=) 16.Ke2 Bf6 17.Rad1 Ne5 18.Rd8 Rd8 (18...Kd8 19.Ne5 Be5 20.Ne4+–) 19.Ne5+– Be5 20.Rd1 (better 20.Ne4!?+–) 20...Rd1=+ 21.Kd1 Kd7 (21...Bg3 22.hg3 Kd7 23.e4=+) 22.a4 (22.Ne4 Bd6+=) 22...b6 (better 22...Bg3!? 23.hg3 c6=+) 23.Kc2 f5 (23...g5 24.Kd3+=) 24.Kd3 f4 (24...Ke6 25.f4 Bd6 26.Nf1+–) 25.ef4 Bf4 26.h3 (26.Nf1 c6+–) 26...Bc1 (26...Bg3 27.fg3 g5 28.Ke4+–) 27.Ne4 Ke6 28.g3 Ke5 29.f4 Ke6 30.Ng5 Kf6 31.Nf3 (31.Ke4 Bd2+–) 31...g5 (31...Kf5 32.h4+–) 32.fg5 (32.Ng5!? Kf5+–) 32...Bg5 33.Ng5 Kg5 34.Ke4 g6?? (34...Kf6+–) 35.Ke5 Kh5 36.Kf6 g5 (36...Kh6 37.Ke7 Kg7 38.g4+–) 37.Kf5 (37.Kg7 a6 38.ba6 b5 39.a7 g4 40.a8Q gh3 41.Qe4 ba4 42.Qf5) 37...Kh6+– 38.g4 a6 (38...Kg7 39.Kg5 Kf7+–) 39.ba6 b5 (39...Kg7 40.a7 b5 41.a8Q Kf7 42.Qd8 ba4 43.Qc7 Ke8 44.Ke6 a3 45.Qe7) 40.ab5 (40.ab5 Kg7 41.a7 Kf7 42.a8Q Kg7 43.Qa6 Kf7 44.Qf6 Ke8 45.Ke6 c6 46.Qe7; 40.Kf6 Kh7 41.a7 bc4 42.a8Q c3 43.Qf8 c2 44.Qg7) 1–0. aravind555 (1825) – tumdav (1850), lichess.org, 2020.

5.Nf3 c6

6.a4 Nbd7 7.Be2 c5 8.d3 Qa5 9.Nbd2 Be7 10.e4 Bg6 (10...Be6 11.Ng5=) 11.Nh4 a6 12.0-0 ab5 (12...Qc7 13.Nc4+=) 13.Ng6 hg6 14.ab5 Qd8 15.Ra8 Qa8 16.Qa1 Qb8 17.Nc4 d5 (better 17...Bd8!?+/-) 18.ed5+- Nd5 19.Re1 (19.Ne5 f6 20.Nf3 g5+/-) 19...e4 (19...Nb4 20.Qa4+/- (20.Ne5? Nc2 21.Qc1 Ne1-+)) 20.g3 Nf4? (better 20...ed3 21.Bg7 Rh7 22.Bd3 Nb4+-) 21.gf4 Qf4 22.Be5 (better 22.Qa8!? Bd8 23.h3 0-0 24.Qb7 Bh4+-) 22...Ne5 23.Qe5 (23.Ne5?? Qh2 24.Kf1 Qh1) 23...Qe5 24.Ne5 Bd6 25.Nc4 Bh2 26.Kg2 Bf4 (26...Bc7 27.b6 Bf4 28.Bf3+- (worse 28.de4 Rh2 29.Kg1 Rh4+-)) 27.Bf3 Rh2 (27...Kd7 28.Re4 g5 29.Re2+-) 28.Kg1 f5 29.Be4! fe4 (29...Kd8 30.Bb7 g5 31.Bc6+-) 30.Re4 Kd7 31.Rf4 Ke6 1-0. onur604 (2320) - Brunomezenga (2270), Casual Rapid game, lichess.org, 2021.

6.a4 Be7 7.c4 a6 8.Be2 ab5 9.ab5 Ra1 10.Ba1 Qb6 11.Nc3 0-0 12.0-0 Nbd7 13.d4 Ra8 (13...Re8 14.c5 Qd8 15.Qb3=) 14.Nh4+= Bg6 15.Ng6 hg6 16.Bf3 e4 (16...g5!?+/-) 17.Ne4 cb5 18.Nf6 Bf6 19.cb5 Qb5 20.Qb1 Qb1 21.Rb1 Nc5 22.dc5 Ba1?? (better 22...Ra1 23.Ra1 Ba1 24.cd6 b5+-) 23.Bb7 (23.Bb7 Re8 24.c6+-) 1-0. onur604 (2320) - MonsieurMagoo (2100), Casual Rapid game, lichess.org, 2021.

6.a4 Be7 7.Be2 0-0 8.0-0 Qc7 9.d4 e4 10.Nfd2 d5 11.c4 Nbd7 12.c5 Bg6 (12...b6 13.cb6 ab6 14.Nc3=+) 13.Nc3= Rac8 (13...b6 14.cb6 ab6 15.Qb3=) 14.a5+= Ne8 (14...Qd8 15.Qb3+=) 15.b6 White terminates the opponent with strong threats 15...ab6 (15...Qb8 16.Na4+=) 16.ab6+– Qb8 17.Ra7 f5 (17...Nef6 18.Nb3 Kh8 19.Na5+–) 18.Ba6! Nc5? (18...ba6 A pinning theme 19.Rd7) 19.dc5+– Bc5 20.Rb7 Qd6 21.Nb3 Rf7 (21...Ba3 22.Rd7 Qd7 23.Bc8 Qc8 24.Ba3 Rf6+–) 22.Rf7 Bf7 23.Nc5 Ra8 24.b7 (24.b7 Rb8 25.Qd4+–) 1–0. onur604 (2320) – Matteo1967 (2055), lichess.org, 2020.

6.Nc3 Be7 7.d4 (7.Be2 0-0=) 7...ed4 (7...e4!? 8.bc6 bc6+= (8...ef3? 9.cb7 Nc6 10.ba8R Qa8 11.Qf3+–; 8...Nc6?! 9.d5=)) 8.Nd4= Bg6 (8...Bg4 9.f3 Be6 10.Bd3+=) 9.Bd3 Bd3 10.Qd3 0-0 (10...a6 11.bc6 Nc6 12.0-0+=) 11.bc6 Nc6 12.0-0 Qc7 (12...Nd4 13.Qd4 (worse is 13.ed4 d5+=) 13...Re8 14.Nd5+=) 13.Nf5 Rfd8 14.Nd5 Nd5 15.Qd5 Bf8 16.Qc4 (16.a3 Rdc8+=) 16...Qa5 (16...d5 17.Qg4 g6 18.Bf6=) 17.Qg4 g7 draws heavy fire 17...g6 18.Nd4 Bg7 19.Nc6 bc6 20.Rac1?? (20.Bg7 Kg7 21.Qc4 d5 22.Qd4 Kg8=) 20...Be5 (better is 20...Bb2 21.Rb1 Qa2-+) 21.h4?? (better is 21.Be5 de5 22.a4=) 21...Qa6 (better is 21...Bb2 22.Rb1 Qa2-+) ½–½. Cortese,Davide – Fernandez,John, IECG, 1996.

5.Nf3 Nbd7

6.Bc4 d5 7.Bb3 (7.Be2 Bd6 8.Nc3 Qe7 9.0-0 c5 10.bc6 bc6 11.Rb1 Rb8+=) 7...Bd6 8.a4 (8.0-0 0-0 9.d3 Qe7 10.Bd5 Nd5 11.e4 Be6+=) 8...c6 (8...0-0 9.0-0 Qe7 10.Nc3 c6 11.a5 Nc5+=) 9.d4 (9.0-0 0-0+= 10.Ba3 Qc7 11.Bd6 Qd6+=) 9...e4 10.Ne5 (10.Nfd2 Bg4 11.f3 ef3+=) 10...Qc7 11.f4 (11.Nd7!? Bd7 12.bc6 Qc6 13.Ba3+=) 11...ef3!–/+ 12.Nf3 (12.Qf3 Be4; 12.Nf3 Ng4; 12.gf3 Ne5) 12...Bg4 (12...Ng4 13.Qe2-+) 13.Ba3 (13.Nbd2 0-0–/+) 13...Ba3 (better is 13...Bh2 14.Nc3 Ne4 15.Ne4 de4 16.Rh2 Bf3 17.gf3 Qh2 18.bc6 bc6-+) 14.Na3+= 0-0 15.Qd2 (15.0-0!?+=) 15...Ne4–/+ 16.Qb4 a5 17.Qe7? (better is 17.ba6 ba6 18.0-0–/+) 17...f6?? (17...Nef6!? 18.b6 Qb6 19.0-0-+) 18.Nb1?? (better is 18.Qe4! f5 19.Qd3+–) 18...Rae8 19.Qa3 Nd6 20.Nbd2 (20.0-0 Nf5 21.bc6 bc6-+) 20...Re3 21.Kf1 (21.Kf2 Nf5-+) 21...Rfe8 22.Re1 (22.Kg1 Bf3 23.Nf3 Nb6-+) 22...Re1 23.Ne1 Be2 (23...cb5?! 24.Bd5 Kh8 25.ab5-+) 24.Kg1 Nf5 25.c3 (25.Ndf3 Qf4 26.h3 Bf3 27.Nf3 Nd4 28.Kf1-+) 25...Qf4 26.Qa1 (26.h3 Qd2 27.Qa1-+) 26...Qe3 0–1. Baranov,Vyacheslav – Chaus,Mariya, Doroshkevich Mem (5), 2007.

6.Bd3 Bd3 7.cd3 =+.

6.d4 e4 7.Nfd2 d5 8.c4 c5 9.cd5 Nd5 10.Bc4 N7f6 (10...N5b6 11.0-0=+) 11.Qb3 b6 (better 11...Qd7=) 12.Nc3 Nc3 (12...Be6!? 13.dc5 bc5 14.Nce4 Ne4 15.Ne4 Qa5 16.Nc3 Nc7+/-) 13.Bf7+- (13.Bc3?! Qd7+=; 13.Qc3?! Bd6+=) 13...Ke7 14.Bc3 Qd7 15.0-0 Kd8 (better 15...Rd8+-) 16.dc5 bc5 17.Rfd1 Bd6 18.b6 (better 18.Ba5 Ke7 19.Nc4 Be6 20.Be6 Bh2 21.Kh2 Qe6+-) 18...Qb7? (18...ab6 19.Nc4 Ke7 20.Rd6 Qa7 21.Bf6 gf6+-) 19.Bf6 gf6 20.Bd5 c4 (20...Qb6 21.Ba8 Ke7 22.Be4 Bg4+-) 21.Nc4 Qg7 22.Nd6 Rg8 23.Bg8 Qg8 24.Qg8 Kd7 25.Qf7 Kc6 26.Qc7 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Be2 Nd5 7.d3= Be6 8.a4 Be7 9.c4 N5f6 10.e4 h6 11.0-0 Nc5 12.Nbd2 0-0 13.d4 ed4 14.Nd4 Nce4 15.Ne6 fe6 16.Ne4 Ne4 17.Qd4 Nf6 18.Bg4 e5 19.Be6 Kh8 20.Qd3 Qe8 21.f3 (21.f4 Nh5 22.f5 Nf4=+) 21...Bd8 (21...Nh5!? 22.g3 a6=+) 22.Bf5= Nd7 (22...a6 23.f4 e4 24.Qd4=) 23.Bd7+= Qd7 24.Be5 Qf5 25.Qf5 Rf5 26.Bb2 Bf6 27.Bf6 Rf6 28.Rfe1 Rf4 29.Rac1 Raf8 30.Re7 R4f7 31.Rce1 Kg8 32.Kf2 Re7 33.Re7 Rf7 ½-½. DEFFM – GuestXWVC, freechess.org, 2021.

5.Nf3 Be7

6.d4 e4 7.Nfd2 0-0 8.c4 d5 (8...a6 9.Qb3+=) 9.Be2 c6 10.a4 Qc7 11.0-0 Nbd7 12.f4 (12.bc6 Qc6 13.Ba3 Ba3 14.Na3 dc4 15.Bc4 Nb6=) 12...ef3 13.Nf3 (13.Nf3 Ng4 Combination; 13.Bf3 Bd6 Combination; 13.Rf3 Bg4 Decoy; 13.gf3 Bd6 Combination) 13...Ng4 14.Qb3 Be4 15.Nbd2 Bd6 (better is 15...Bg5! 16.Kh1 Be3 17.Ne4 de4-+) 16.h3= (worse is 16.Ne4 Bh2 17.Kh1 de4+=) 16...Nh2 17.Rfc1 Nf6? (17...Nf3 18.gf3 dc4 19.Bc4= (worse is 19.Nc4 Bh2 20.Kh1 Qg3–/+; worse is 19.Rc4 Bd5–/+)) 18.cd5?? (better is 18.Ne5+–) 18...Bd5= 19.Qc3 Nf3 20.Bf3 Bh2 (20...Rae8 21.Qd3 Bh2 22.Kh1 Bf3 23.gf3=) 21.Kh1+= Bf3 22.Nf3 (22.gf3 Qg3 23.bc6 Nd5-+) 22...Ne4? (better is 22...Nd5 23.Qd3 Bd6+=) 23.Qc2+– Ng3 24.Kh2 Ne2 25.Kh1 Nc1 26.Rc1 Rac8 27.Qc3 (27.d5 h6+–) 27...f6 28.bc6 bc6 29.e4 Qf4 30.e5 Rfe8 31.ef6 gf6 (31...Qf6 32.Ne5 Qe6 33.Nc6+–) 32.Re1 (32.Qc4 Kg7+–) 32...Re1 33.Qe1 Kf7 34.Qc3 Qf5 (34...Rb8 35.Qc2 Kg8 36.Ba3+–) 35.Qc4 (35.Qb3 Qe6 36.Qb7 Ke8 37.Qh7 Qf7+–) 35...Kf8 (35...Qd5 36.Qa6 Qd7 37.Ba3+–) 36.Ba3 Kg7 37.Qc5 (37.Qe2 Qd7+–) 37...Qc5 38.Bc5 a6 39.a5 Rb8 40.Kh2 Kf7 41.Nd2 Ke6 42.Nc4 (42.Ne4 Kf5 43.Nd6 Kf4+–) 42...Kd5 43.Ne3 Ke4 44.Nc2 f5? (44...Rb5 45.Nb4 Ra5 46.Nc6+–) 45.Nb4 (better is 45.Bb6!? f4 46.Nb4 Ra8+–) 45...Rb4 46.Bb4 Kd4 ½–½. Schwichtenberg,Juergen (1685) – Ereth,Gernot (1625), Karl Mala mem op, 2004.

6.Be2 Nbd7 7.d3 0-0 8.0-0 e4 9.Nd4 Bg6 10.de4 Ne4 11.Nd2 Ndc5 12.a4 Qd7 13.Bg4 f5 14.Bh3 Ng5 15.Kh1 Nh3 16.gh3 f4 17.Qg4 fe3 18.fe3 Bf6 19.Qd7 Nd7 20.Rab1 Rae8 21.Rfe1 Nc5 22.a5 Bg5 23.Nf1 Rf2 24.Ng3 Be3 25.Bc1 0–1. Gross – Merten, 1985.

5.Nf3 h6

6.Bc4 Nbd7 7.0-0 Nb6 8.Bb3 Be7 9.a4 0-0 10.a5 (10.Nc3 a5=) 10...Nbd7 11.d4 ed4 (11...a6 12.de5 de5 13.ba6 Ra6 14.Ne5 Ne5 15.Be5=) 12.Nd4= Bg6 13.a6 Nc5? (better 13...ba6 14.Nc6 Qe8=) 14.ab7+- Nb7 15.Nc6 Qd7 16.Nc3 a5 (16...Nc5 17.Nd5 Nd5 18.Bd5+- (18.Qd5?! Bg5+=)) 17.Ne7 Qe7 18.Nd5 Nd5 19.Bd5 (19.Qd5?! Nc5 20.Qd4 Ne6+/-) 19...Be4?? (better 19...Nc5+-) 20.Qd4 (20.Qd4 Qf6 21.Qf6 gf6 22.Be4+-) 1-0. onur604 (2320) - MonsieurMagoo (2150), Casual Rapid game, lichess.org, 2021.

6.Bc4 Be7 7.0-0 0-0 8.a4 c6 9.d4 e4 10.Nh4 Bh7 11.g3 d5 12.Ba2 (12.Be2 Nbd7=+) 12...Qb6 (better 12...g5!? 13.Ng2 Qd7-/+) 13.c4= a6 14.Nc3 ab5 15.ab5 (15.cd5? b4 16.Qb3 Ra6-+) 15...Qd8 (15...cb5!? 16.Nd5 Nd5 17.cd5 Nd7=) 16.cd5 cd5 17.Qb3 (better 17.Ng2+=) 17...Re8?? (better 17...g5 18.Ng2 Kg7=) 18.Nd5+- Nd5 19.Qd5 Bh4 (19...Qd5 20.Bd5 Ra1 21.Ra1+-) 20.gh4 (20.Qf7 Kh8 21.Qb7 Ra2 22.Ra2 Bf6+-) 20...Qe7?? (20...Nd7 21.Bc4 Qe7 22.Ra8 Ra8 23.Qb7 Rd8+-) 21.Qf7! Qf7 (21...Kh8 22.Qe7 Re7 23.Bd5 Ra1 24.Ra1+- (24.Ba1?! Bg8 25.Bg8 Kg8+-)) 22.Bf7 Kf7 23.Ra8 Nd7 24.Ra7 b6 (24...Rb8 25.Rc1 Ke8+-) 25.Rd7 (25.Rd7 Ke6 26.Rg7+-) 1-0. DEFFM – SPSPSPSPSP, freechess.org, 2021.

4.b5 Bg4

5.Be2 Qd7 6.a4 Be7 7.Bg4 Qg4 8.Qg4 Ng4 9.Nf3 Nd7 10.0-0 Nc5 (10...e4 11.Nd4 (11.Bg7? Rg8 12.Nd4 Rg7-+) 11...Bf6 12.Nc3=) 11.h3 Na4?? (better 11...Nf6=) 12.Ra4+- Nf6 13.Nh4 (13.Nc3!? a5+-) 13...Nd5 14.Nf5 Nb6 15.Ra1 (15.Ng7?! Kf8 16.Rg4 h5+/-) 15...Bg5? (15...g6 16.Ne7 Ke7 17.f4+-) 16.f4 (16.Ng7 Kf8 17.Nf5 a5+-) 16...ef4? (16...Bf6+-) 17.ef4 (17.Bg7!? Rg8 18.ef4 Bd8+-) 17…Bh6 1-0. Atotheking (1640) – DDFernandes, lichess.org, 2019.

5.Be2 Be6 6.a4 Nbd7 7.Nf3 b6 8.c4 Nc5 (8...a5 9.d4+=) 9.Nc3 (9.d4 Ncd7+/-) 9...Be7 10.0-0 Nce4 (10...e4 11.Ng5+=) 11.Qc2 (11.Ne4 Ne4 12.d4 a6+/-) 11...Nc3+= 12.Qc3 0-0 13.Rfd1 (13.a5 Rc8+=) 13...Ne4 (13...a6!?=) 14.Qc2+/- Bf5? (14...f5 15.d4+/-) 15.d3?? (better 15.Bd3 d5 16.Ne5+-) 15...Ng5 (15...Nc5 16.a5+=) 16.e4 (16.Ng5 Bg5 17.a5 Rc8+/-) 16...Bg6+= 17.Re1 f5 18.Rad1 (18.ef5!? Rf5 19.Qd1+=) 18...fe4=+ 19.de4? (19.Ng5 Bg5 20.de4=) 19...Ne4?? (better 19...Be4 20.Qb3 Bf3 21.c5 Kh8 22.Bf3 Nf3 23.gf3 Qc8-+ (23...bc5?! 24.Re5 Qe8 25.Re4-/+)) 20.Bd3 Rf4? (20...Rf3 21.gf3 Ng5 22.Bg6 hg6 23.Qb3+=) 21.Ne5?? (better 21.Re4 Be4 22.Be4+-) 21...Rf2 22.Qc3?? (better 22.Ng6 Rc2 23.Ne7 Qe7 24.Re4 Rg2 25.Kg2 Qg5 26.Kh1+/-) 22...Nc3-+ (22...de5 23.Be4 Qf8 24.Ba8+/-) 23.Bc3 Bd3 (better 23...de5 24.Bg6 Qf8 25.Be4-+) 24.Nd3 (24.Nc6 Qf8 25.Ne7 Kh8 26.Rd3-+) 24...Rc2 25.Ba1 (25.Nb4 Rc3 26.Nc6 Qd7 27.Ne7 Kh8-+) 25...Rc4 (better 25...Bh4 26.Rf1 Qg5 27.Nf2 Bf2 28.Rf2 Rf2 29.Kf2-+) 26.Nf2 (26.Ne5 de5 27.Rd8 Rd8-+) 26...Bf6 (26...Ra4 27.Ne4-+) 27.Ne4 Re4! 28.Re4 Ba1 29.Ra1 Qf6 (29...a6 30.ba6 d5 31.Rd1-+) 30.Rae1 Rf8 31.h3 Qf2 32.Kh2 h6 33.R4e2 (33.R1e2 Qc5-+) 33...Qd4 (better 33...Qf4 34.Kg1 Qa4 35.Re7 Qb5 36.Rc7-+) 34.Re4 Qc5 35.Re7 Rf2 36.R7e3 (36.R7e2 Re2 37.Re2 d5-+) 36...Qb4 (36...c6 37.bc6 Qc6 38.Re4-+) 37.Re4 (37.Re8 Kh7 38.R1e4-+) 37...Qc5 38.R1e3?? (38.R4e3 c6 39.bc6 Qc6 40.Re4-+) 38...Qg5 (38...c6!? 39.bc6 Qc6 40.a5-+) 39.Rg3 Qf5 (better 39...Qc1!? 40.Re7 Rf7 41.Re8 Kh7 42.Rg4-+) 40.Re7 g5 41.Rc7 h5 42.Rc6 (42.Rc4 Rf4 43.Rgc3-+) 42...h4 43.Rgc3 Qf4 44.Rg3 Qg3 45.Kg1 Qg2 0-1. brucepeng (1980) - Ryoerlangga (1965), lichess.org, 2021.

5.Be2 Be2

6.Qe2 a6 7.a4=.

6.Qe2 Nbd7 7.Nc3 Be7 (7...d5 8.Nf3=) 8.Nf3 c6 9.0-0 (9.a4 0-0=) 9...Qb6 (9...0-0 10.e4=) 10.a4+= a6 (10...0-0 11.a5 Qc7 12.d4=) 11.a5 Qc7 12.b6 Qc8 13.d4 (13.Nh4 g6+=) 13...e4 (13...0-0 14.e4+=) 14.Nd2 d5 15.f3 h5? (better is 15...ef3 16.Qf3 0-0+=) 16.fe4+– h4? (better is 16...de4 17.Nce4 0-0+–) 17.e5 Ne4 (17...h3 18.ef6 Nf6 19.e4 hg2 20.Rf2+– (20.Kg2?! Qg4 21.Qg4 Ng4+–)) 18.Nde4 de4 19.Ne4 (19.Qc4 0-0 20.Ne4 Nb8+–) 19...h3 (19...0-0 20.Qc4+–) 20.Qf3 hg2 (20...f6 21.Ba3 Ba3 22.Ra3+–) 21.Qf7 Kd8 22.Rf2 (22.Kg2?! Ne5 23.Qf4 Nc4+–) 22...g5 (22...Rf8 23.Qg7 Rf2+–) 23.e6 Nf8 (23...Qb8 24.Rg2 Rf8+–) 24.d5 cd5 (24...Qd7 25.ed7 Nd7 26.Bh8 cd5 27.Qd5 Bb4 28.Nf6 Bd6 29.Qd6 Rc8 30.Qd7) 25.Rd1 Qc6 (25...Qc4 26.Bf6 Qb4 27.Rd5 Nd7 28.Be7 Qe7 29.Rd7 Kc8 30.Qe7 Kb8 31.Rb7 Kc8 32.Nd6) 26.Bh8 Ne6 (26...Ra7 27.Bf6 Kc8 28.Qe7 Ne6 29.ba7 Qd7 30.a8Q Kc7 31.Rb1 Qe7 32.Rb7 Kc6 33.Qa6) 27.Bf6 Qd7 (27...Kc8 28.Qe7 g4 29.Nd6 Kb8 30.Qe6 Qb6 31.ab6 a5 32.Qe8) 28.Qg8 Nf8 29.Qf8 Qe8 30.Rd5 Kc8 31.Qe8 1–0. pierre – networ, internet, 2010.

6.Qe2 Nbd7 7.Nf3 e4 8.Nd4 =.

6.Qe2 Nbd7 7.Nf3 Qe7 8.a4 a6 9.c4 (9.Nc3 d5=) 9...d5 (9...ab5 10.ab5 Ra1 11.Ba1=) 10.d3 (10.cd5 Qb4 11.Bc3 Qg4 12.Ne5 Qg2=) 10...e4 11.Nfd2 Nc5 12.de4 de4 13.0-0 g6 (13...Qe6!?=) 14.Nc3 Qe6?? (better is 14...Rg8+=) 15.Nd5!+– Nd5 16.cd5 (16.Bh8?! Nb4+–) 16...Qd5 17.Bh8 0-0-0 (17...Qd3 18.Qe1+–) 18.Bd4 (better is 18.ba6 Na6 19.Bd4 Bc5+–) 18...Nb3 (18...a5+–) 19.Nb3 Qb3 20.ba6 ba6 21.Qa6 Kd7 22.Qb5 (better is 22.Rfc1 Qd5 23.Bb6 Ra8 24.Rc7 Ke6+–) 22...Qb5 23.ab5 Kc8 (23...Bd6 24.f3 ef3 25.gf3+–) 24.Rfc1 (better is 24.f3 ef3 25.Rf3 f5+–) 24...Kb7 (24...Bd6 25.b6 Kd7 26.b7+–) 25.g3 (better is 25.Ra7 Kb8 26.Rcc7 Bc5 27.Rcb7 Kc8+–) 25...Bh6 (25...Bd6+–) 26.Ra7 Kb8 27.Rcc7 Rf8 28.Rf7 (28.Rcb7 Kc8 29.Be5 Be3 30.Rb8) 28...Rf7+– 29.Rf7 Bg5 (29...Kc8 30.b6 Kd8 31.b7 Ke8 32.Rh7 Bg5 33.b8Q Bd8 34.Qe5 Be7 35.Qe7) 30.Rh7 (30.b6 Be7 31.Re7 h5 32.b7 g5 33.Be5 Ka7 34.b8Q Ka6 35.Ra7) 30...Bd8+– 31.Rh8 Kc8 32.Bf6 Kc7 33.Bd8 Kc8 34.b6 g5 (34...Kb7 35.Rh7 Kc6 36.b7 Kd6 37.b8Q Ke6 38.Re7 Kd5 39.Qc7 g5 40.Re5) 35.Bg5 (35.Rh7 Kb8 36.Bg5 Ka8 37.h4 Kb8 38.Bf4 Kc8 39.b7 Kd8 40.b8Q) 35...Kb7+– 36.Rh6 Ka6 White now must not overlook the idea Bd8 37.Bd8 Kb7 38.Bc7 (38.Rh7 Kc6 39.b7 Kd6 40.b8Q Kc5 41.Qc8 Kd5 42.Be7 Ke5 43.Rh5) 38...Ka6+– 39.Re6 (39.g4!? Kb7+–) 39...Kb7 40.Re4 Ka6 41.h4 Kb7 42.h5 Ka6 43.h6 Kb7 (43...Ka5 44.b7 Kb5 45.b8Q Kc6 46.Rd4 Kc5 47.Qb6) 44.h7 Ka6 (44...Kc6 45.h8Q Kb7 46.Qb8 Kc6 47.Qa8 Kc5 48.Qa4 Kd5 49.Qc4) 45.h8Q Kb7 46.Qb8 Kc6 (46...Ka6 47.Qa8 Kb5 48.Qd5 Ka6 49.Ra4) 47.Qa8 Kb5 (47...Kc5 48.Qa4 Kd5 49.Qc4) 48.Qd5 Ka6 49.Ra4 1–0. Genne,Rene (1795) – Sandjivy,Mateo, Saint Denis RUF, 2012.

6.Qe2 Be7 7.c4 Nbd7=+ 8.Nc3 0-0 (8...a6 9.ba6 Ra6 10.d3=) 9.d3= Nc5 10.e4 (10.Nf3 Re8=) 10...a6 11.a4 ab5 12.ab5 Ra1 13.Ba1 Nb3 (13...Qa8 14.Bb2=+) 14.Bb2 Qa8 (14...Nd4 15.Qd2=) 15.Nf3 c6 16.0-0 cb5 (16...Qa5 17.Rb1+=) 17.cb5 (17.Nb5 Qc8+/-) 17...Qd8 (17...Qa5!?=) 18.Qc2 Nc5 19.d4 ed4 20.Nd4 Re8 21.Nd5 (21.Rd1!?+/-) 21...Nce4= 22.Ne7 (22.Nf5!? Bf8 23.Nc7=) 22...Re7 23.Nf5 Re8 24.Re1 (24.f3 Nc5=) 24...g6 (24...d5 25.Qd3-/+) 25.Bf6 (25.Nh6!? Kf8 26.Qd3=+) 25...Nf6 26.Re8? (26.Ne3 Ng4-/+) 26...Ne8 (better 26...Qe8!? 27.Ne3 Qb5-+) 27.Nh6 Kg7 28.Ng4 Qa5 29.Qb2 Kf8 30.h3 d5 (better 30...b6-/+) 31.Qh8+= Ke7 32.Qh7?? (better 32.Qe5 Kf8 33.Qd5 Qe1 34.Kh2=) 32...Qb5-+ 33.Ne5 Qb1 34.Kh2 Qf5 35.Nf3 (better 35.Qh4 g5 36.Qd4-+) 35...d4?? (better 35...Qf4 36.Kg1 Nf6-+) 36.Nd4?? (better 36.Qh4 f6 37.Nd4 Qe5 38.Kg1=+) 36...Qe5 37.g3 Qd4 38.Qg8 (38.Kg2-+) 38...Qf2 39.Kh1 Qf3 (better 39...Qg3!? 40.Qh8-+) 40.Kh2 Nf6 (better 40...Nd6 41.h4 Ne8 42.Qh8-+) 41.Qb8 Qe4 42.Qc7 Kf8 43.Qd6 (43.Qc3 Qe2 44.Kg1 Ne4 45.Qh8 Ke7 46.Qe5 Kd7 47.Qd5 Kc8 48.Qf7 Qe1 49.Kg2 Qg3 50.Kf1 Qh3 51.Ke2 Qf5 52.Qc4 Kd7 53.Qd4 Nd6 54.Qg7 Ke6 55.Qg8 Ke5 56.Qh8 Kd5 57.Qg8 Kc5-+) 43...Kg7 44.Qb6 (44.Qd2 Qe5 45.Qf2 b5-+) 44...Qe2 45.Kh1 Qf1 (better 45...Ne4!? 46.Qd4 Kh7 47.Kg1-+) 46.Kh2 Ne4 (better 46...Qf3-+) 47.Qb7?? (47.Qd4 Qf6 48.Qe4 Qf2 49.Qg2 Qg2 50.Kg2-+) 47...Qe2 (47...Qf2 48.Kh1 Ng3) 48.Kh1 Nf2 (48...Qf3 49.Kh2 Qg3 50.Kh1 Nf2) 49.Kg1-+ Nh3 (49...Nh3 50.Kh1 Nf2 51.Kg1 Qe1 52.Kh2 Ng4 53.Kh3 Qe2-+) 0-1. dym7 (1610) - p20RahulSah, Rated Blitz game, lichess.org, 2021.

6.Qe2 Be7 7.Nf3 0-0 8.0-0 (8.Nc3 Nbd7=) 8...Nbd7 9.Nc3 Nc5 (9...d5 10.e4 d4 11.Nd5=) 10.d4 Nce4 (better is 10...ed4!? 11.ed4 Ne6+=) 11.de5+/- Nc3 12.Bc3 Ne4 13.Qd3 (13.Bb2!?+/-) 13...Nc3+= 14.Qc3 de5 15.Rfd1 (15.Ne5 Bf6 16.Rfd1+=) 15...Qe8 (15...Bd6!?+=) 16.Qc7+/- Rc8 (better is 16...Bf6!? 17.Qb7 Rb8+/-) 17.Qb7+– Rc2 (17...Rb8 18.Qa7 Rb5 19.c4+–) 18.Qa7 (18.a4 Bc5 19.Qe4 Rb2+–) 18...Bf6 (18...e4 19.Nd4 Bc5 20.Qa4+–) 19.Qa4 (19.a4 Qb8 20.Qb8 Rb8+–) 19...Rc8 (19...Qc8 20.Nd2 Be7 21.Rab1+–) 20.Qb3 e4 (20...Qe6 21.Qe6 fe6 22.Rab1+–) 21.Nd4 Rb8 (21...Rc5 22.b6 Qd7 23.a4+–) 22.a4 Qe5 (22...g6 23.b6 Qd7 24.a5+–) 23.Nc6 Qa1 (23...Qg5 24.Nb8 Rb8+–) 24.Ra1 Ba1 25.Qb1 Bf6 (25...Bc3 26.Nb8 Rb8 27.b6+–) 26.Nb8 Rb8 27.b6 1–0. pierre – nixon_w, internet, 2010.

6.Ne2 Nbd7 7.0-0 Be7 8.c4 0-0 9.Qc2 a6 10.Nbc3 ab5 11.cb5 c6 12.a4 cb5 13.Nb5 Qb6 14.Qb3 Rfc8 15.d4= ed4 16.Ned4 Nc5 17.Qa2 Nfe4 18.Nf5 Bf6? 19.Bf6+– Nf6 20.Ne7 Kf8 21.Nc8 Rc8 22.Rab1 Qd8 23.Rfd1 Nfe4 24.f3 Ng5 25.Nd6 Nf3 26.gf3 Qg5 27.Kf2 Qh4 28.Kg1 Rc6?? 29.Qf7# 1–0. HeresJhonny – regie11, Caissa.com, 2004.

6.Ne2 Be7 7.c4 Nbd7 8.0-0 Nc5 9.d4+= Nce4 (9...Ncd7 10.Ng3+=) 10.a4 (10.f3 Ng5 11.de5 de5 12.Be5 Ne6+/-) 10...c5 (10...ed4 11.Bd4 0-0 12.Nbc3+=) 11.de5 (11.f3 Ng5 12.de5 de5 13.Be5 0-0+/-) 11...de5+= 12.Be5 (better 12.Qd8!? Rd8 13.Be5+=) 12...Qd1= 13.Rd1 0-0?? (better 13...Nf2 14.Kf2 Ng4 15.Kg3 Ne5=) 14.Nbc3+- Rad8 15.Ne4 Ne4 16.Nc3 Rd1 17.Rd1 Nc3 18.Bc3 Rd8 19.Rd8 Bd8 20.Kf1 f6 21.Ke2 Kf7 22.e4 b6 23.Bd2 Ke6 (23...Bc7 24.h4+-) 24.Bf4 Be7 25.Bb8 a5?? (better 25...Kd7+-) 26.Bc7 (better 26.ba6 f5 27.a7 fe4 28.a8Q+-) 26...Bd6 27.Bb6 Ke5 (27...f5 28.ef5 Kf5 29.Ba5+-) 28.Ke3 g5 29.f3 f5 30.ef5 Kf5 31.g3 h5 Black plans g4 (31...g4 32.fg4 Kg4 33.Ke4+-) 32.Ba5 g4 (32...h4 33.gh4 gh4 34.h3 Bf4 35.Kd3+-) 33.f4 Bf4 (33...Be7+-) 34.gf4 g3 35.Be1 (better 35.hg3 Kg6+-) 35...h4 (better 35...gh2 36.Bd2 h1Q-+) 36.Bg3!+- hg3 37.hg3 Kg4 38.b6 Kg3 39.b7 Kg2 40.b8Q (40.b8Q Kg3 41.Qg8 Kh2 42.Kf2 Kh3 43.Qg3) 1-0. BeepBeepImAJeep (2590) - travis1010 (1765), lichess.org, 2017.

6.Ne2 Be7 7.c4 Nbd7 8.d3 0-0 9.0-0 Ng4 (9...a6 10.a4=) 10.h3 Nh6 11.e4 f5 12.f4 fe4 13.de4 Nf7 14.Nbc3 Nc5 15.Qc2 c6 16.Rad1 Qb6 17.Kh1 Rad8 18.fe5 (18.Na4 Na4 19.Qa4 Qe3=) 18...Ne5 19.Rf8 (19.Na4 Na4 20.Be5 Rf1 (20...cb5?! 21.Qb3 Nc5 22.Bd4+=) 21.Rf1 de5 22.Qa4 Qe3–/+) 19...Rf8+= 20.Na4 Na4 21.Be5 cb5 22.cb5 de5 23.Qa4 Qf2 (23...Bc5 24.Qc4 Kh8 25.Rc1=) 24.Ng1 (24.Qc4 Kh8=) 24...Bh4 (24...Rc8 25.Nf3 Rc2 26.Ne1–/+) 25.Qb3 Kh8 26.Nf3 Bg3 27.Qb4 The mate threat is Qxf8 27...Rg8 28.Qc4 Rf8 (better is 28...Bf4!?+=) 29.Rf1+/- Qb6 30.Rc1 (30.Ne5 Bf2 31.Nd7+–) 30...h6 31.Rd1 Qe3 32.Rd3?? (better is 32.Qd3 Qd3 33.Rd3=) 32...Qe1!!-+ (32...Qe1 33.Ng1 Bf2 34.Rd1 Qd1 35.Qc1 Qc1 36.Kh2 Qg1) 0–1. Gross,Wilhelm – Merten,Rainer, xvi/06, 1988.

5.Nf3 Be7

6.Be2= 0-0 7.d4 e4 8.Nfd2 Be2 9.Qe2 d5 10.f3 (10.c4 a6=) 10...Qd7 (10...ef3 11.Qf3 a6 12.a4=+) 11.fe4= de4 12.a4 c6 (12...Qf5 13.c4=) 13.Nc3 cb5 14.Nce4 (14.ab5 Qf5=) 14...ba4 15.Nf6 Bf6 16.0-0 a6 (16...Re8 17.Qf3 Bg5 18.Ne4=) 17.Ne4 (17.Qf3 Bg5+=) 17...Be7 18.Rfd1 (18.Qf3 f5 19.Ng3 g6=) 18...b5 19.d5 Re8 20.Qf3 Bb4?? (better 20...Bh4=) 21.Qg3 (better 21.Nf6 Kf8 22.Nh7 Kg8+-) 21...f5 (21...Bf8 22.Nf6 Kh8 23.Nd7 Nd7+-) 22.Nf6 (22.Nf6 Kf7 23.Nd7+-) 1-0. chessovolution (1750) - rocky_baaaba_boooba (1635), Rated Bullet game, lichess.org, 2021.

6.Be2 0-0 7.h3 Bh5 8.g4 Bg6 9.Nh4 Nbd7 (9...Be4 10.Nf3=+) 10.c4 (10.Ng6 fg6 11.d4 c6=) 10...a6 11.Ng6 fg6 12.a4 ab5 13.ab5 Ra1 14.Ba1 Ne4 15.Qb3? (better 15.0-0!? Bh4 16.f4-/+) 15...Nf2 16.c5 (16.0-0 Nc5 17.Qb2 Nh3 18.Kg2 Rf1 19.Bf1 Qf8-+) 16...Kh8 17.Rf1 (17.0-0 Nh3 18.Kg2 Rf1 19.Bf1 Qf8-+) 17...Nc5 18.Qc4 (18.Qa3 Bh4-+) 18...Bh4 (18...Nh3?! 19.Rf8 Qf8 20.d4 Bh4 21.Kd1 ed4 22.Bd4 Nf2 23.Kc1-+) 19.Be5 (19.Nc3 Qa8 20.Na2 b6-+) 19...Nfd3 (better 19...de5 20.Rf2 Bf2 21.Kd1 Be3 22.Kc1-+) 20.Kd1 Ne5 (20...de5?! 21.Bd3 Be7 22.Bc2-/+) 21.d4 (21.Rf8 Qf8 22.Qf4-+) 21...Rf1 22.Bf1 Qf6 (22...Nc4 23.Bc4 d5 24.Ba2-+) 23.Nd2?? (23.de5 Qf3 24.Be2 Qe3 25.ed6 cd6-+) 23...h6 (better 23...Nc4 24.Bc4 Na4 25.Bb3 Nc3 26.Kc2 Nb5 27.Kd3-+) 24.dc5?? (24.de5 Qe5 25.Nf3 Qa1 26.Qc1-+) 24...dc5 (better 24...Nc4 25.Bc4 Bg5-+) 25.Qf4 (25.Qc5 c6-/+) 25...Qf4 (better 25...Qd6!?-+) 26.ef4-/+ Nf7 27.Bc4 Nd6 28.Bd5 (better 28.Bd3!?-/+) 28...Nb5-+ 29.Bb7 Nd4 (better 29...Nc3!? 30.Kc2 Ne2-+) 30.Nc4 Bg3 31.Ne5 Bf4?? (better 31...Kh7 32.Be4 Bf4 33.Ng6 Bd6=+) 32.Ng6+- Kh7 33.Nf4 g5 34.Nd5 c6 35.Nc3 Kg6 36.Ne4 Kf7 37.Nc5 Ke7 38.Nd3 Kd6 39.Ba6 c5 40.Bc8 (40.Kd2 Nf3 41.Ke3 Nd4+-) 40...Kd5 41.Bf5 (41.Bb7 Kd6+-) 41...c4 42.Nb4 Ke5 43.Bg6 Kf4 44.Nc2 (better 44.Kd2+-) 44...Kg3?? (better 44...Nf3 45.Bh5 Ng1+/-) 45.Nd4+- Kh3 46.Bf5 (46.Bh5!? Kg2+-) 46...Kg3 47.Kc2 Kf4 48.Kc3 h5 (48...Kg3+-) 49.gh5 (49.gh5 Ke5 50.h6+-) 1-0. kasperoff (1865) - ODIN1971 (2170), Hourly SuperBlitz Arena, lichess.org, 2021.

4.b5 g6

5.a4 Bg7 6.c4 c6 7.Nf3 c5 (7...e4 8.Ng5 d5 9.bc6 bc6 10.cd5 Qd5 11.h4=+) 8.Nc3 b6 (8...0-0 9.e4=) 9.d3 (9.Ne5 de5 10.Qf3 Nc6 11.Qc6 Bd7+/-) 9...Bb7 (9...a6 10.Be2=) 10.Be2+= 0-0 11.0-0 Nbd7 12.Qb3 Re8 13.Rad1 Nf8 14.Rfe1 Ne6 15.Bf1 Qc7 16.Nd5 Nd5 17.cd5 Nf8 18.Rc1 f5 19.d4 e4 20.Ng5 Qe7 21.dc5 (21.Nh3 cd4 22.Bd4 Bd4 23.ed4 Qg7=) 21...bc5 (21...Bb2 22.Qb2 Qg5 23.c6-/+) 22.h4 (better 22.Bg7!? Qg7 23.Bc4+=) 22...h6 (22...Bb2 23.Qb2 h6 24.Nh3=+) 23.Nh3 Qh4 24.g3 (better 24.Bg7 Kg7 25.Bc4=+) 24...Qf6?? (better 24...Qe7-/+) 25.Nf4 (better 25.Bf6 Bf6 26.Nf4+-) 25...Qb2-+ 26.Qb2 Bb2 27.Rc2 Be5 28.Ne2 (28.Bc4 g5 29.Nh5 Kf7-+) 28...Rac8 (better 28...Bd5!? 29.Nf4 Bb3 30.Bc4 Bc4 31.Rc4 Bf4 32.ef4-+) 29.Rd1 Rb8 30.Nc3 g5 Black plans f4 31.Bh3 (31.a5 h5-+) 31...Bc3 32.Rc3 f4! 33.gf4 (33.ef4 Bc8 Decoy; 33.gf4 gf4 Combination) 33...gf4 34.Bf5 (34.ef4 Re7 35.Kf1-+) 34...Ng6! 35.Bg6 Rf8 (35...Re5 36.ef4 Rd5 37.Rd5 Bd5-/+) 36.Bh5? (better 36.Be4 h5 37.a5=) 36...Kg7 (36...Rf5 37.Be2 f3 38.Bd3-+) 37.Bg4 f3 (37...fe3 38.Re3 Rf4 39.f3 ef3 40.Bf3-+) 38.Kh2? (38.Rc4!?=+) 38...Bc8 (38...Kf6 39.Kg3-+) 39.Rg1 (better 39.Bc8 Rbc8 40.Rc4-/+) 39...Bg4?? (better 39...Kf6 40.Bc8 Rbc8-+) 40.Rg4= Kf6 41.Re4 Rg8 (41...Rbe8 42.Rcc4 h5 43.Kg3+/-) 42.Rf4?? (42.Re6 Kf5 43.Rc4+/- (43.Rh6 Rg2 44.Kh3 Rg1-/+; 43.Rd6?! Rg2 44.Kh3 Rg1 45.e4 Ke4 46.Re3 Kd4 47.Rf3 c4+=)) 42...Ke5=+ 43.Rf3 Rbf8 44.Rf8 Rf8 45.Kg2 Ke4 (45...Kd5!? 46.Rd3 Ke6=+) 46.Rc4= Kd3 (46...Kd5 47.Rh4=) 47.Rh4+= Ke2 (better 47...c4 48.Rd4 Kc3=) 48.f4 (48.Rh6 c4 49.Rd6+/-) 48...Ke3 (48...c4 49.b6 Rg8 50.Kh1-+) 49.Kg3 (better 49.Rh6!? Rf4 50.Re6 Kd2 51.Kg3=+) 49...Rg8 50.Kh3 (50.Rg4 Rc8 51.Rg7 c4 52.Ra7 c3 53.Re7 Kd2-+) 50...Rg6 (50...c4!? 51.f5 c3-+) 51.f5 (51.a5 Ke4=+) 51...Rf6 52.Kg4 Ke4 53.Kh5? (better 53.Rh1=+) 53…Ke5 0-1. ClayPigeons (2110) - Vadim2517Taipov777 (2125), Rated Bullet game, lichess.org, 2021.

5.Nc3 Bg7 6.Nf3 0-0 7.d3 (7.Be2 a6=) 7...a6 8.a4 Bd7 9.Be2 Re8 (9...c6 10.bc6 Nc6 11.Rb1=) 10.0-0 d5 11.Qd2 (11.d4 e4 12.Ne5 Be6=) 11...Bg4 (11...e4 12.Nd4=) 12.h3 Bf3 (12...Bf5 13.Rfb1=) 13.Bf3 ab5 (13...Qd6 14.Rfb1=) 14.ab5+= Ra1 15.Ra1 c6 16.bc6 (16.Ra7 Qb6 17.Ra8 Nbd7 18.Re8 Ne8=) 16...bc6 17.d4 (17.e4 Qd7+=) 17...e4 (17...ed4 18.ed4 Nfd7 19.Na4=) 18.Be2+= Nbd7 19.Na4 Qc7 20.Ba3 (20.c4 Ra8+=) 20...Bf8 (20...Ra8 21.Qb4=) 21.Bf8+= Kf8 (21...Rf8 22.c4+=) 22.Qb4 (22.c4 Ra8+=) 22...Kg7 23.Nc5 (23.c4 Ra8+=) 23...Rb8 (23...Qd6 24.Na6 Qb4 25.Nb4+=) 24.Qa3 (24.Qc3 Nc5 25.Qc5 h6+=) 24...Qb6 (24...Qd6 25.Nb3 Qa3 26.Ra3=) 25.Nd7+= Nd7 26.Qd6 Rb7 27.c4 (27.Kh2 Qc7 28.Qc7 Rc7=) 27...Qb2= 28.Re1 Qb4 29.Qb4 Rb4 30.c5 (30.cd5 cd5 31.f3 Nf6=) ½–½. Lange,Werner – Maag,Hauke, 1/4268/D, 1996.

5.c4 a6 6.a4 c6 7.Nc3 Bg7 8.h3 0-0 9.Nf3 Re8 10.Be2 d5 11.0-0? (better is 11.cd5 e4 12.Nd4 Nd5 13.bc6 Nc6 14.Nc6 bc6 15.0-0+=) 11...d4-+ 12.bc6 bc6 13.Ne5 Re5 14.Na2 c5 15.Bf3 Ra7 16.ed4 cd4 17.Qb3 Bf5 18.d3 Re8 19.Ba3?! (19.Rae1-+) 19...Nbd7 20.Bd6 Bf8 21.Bf4 (21.Bf8 Kf8 22.Nb4-+) 21...Nc5 22.Qd1 Bd3 23.Re1 Re1 24.Qe1 Be4 (better is 24...a5!? 25.Rd1-+) 25.Be4 Nfe4 26.f3 (26.Nb4 d3 27.Rd1 Rb7 28.Nd3 Rd7-+ (worse is 28...Nd3 29.Qe4 Rd7 30.Be3-+)) 26...Nf6 27.Nb4 Qe8 28.Qe8 Ne8 29.Re1 Re7 30.Re7 Be7 31.Be5 Bf6 32.Bf4 Kf8 33.a5 Ke7 34.Kf1 Kd7 35.Ke1 (35.Bb8 Bd8 36.Ke2 Ba5-+) 35...Bd8 (35...Nd6 36.Bd6 Kd6 37.Ke2-+) 36.Kd1 Ba5 37.Nd5 Ne6 38.Bc1 N6c7 (better is 38...Nd6!? 39.Nf6 Kc6 40.Nh7-+) 39.Nf4 Bb4 40.Nd3 Bd6 41.Kc2 Ne6 42.Bb2 Kc6 43.Bc1 Nf6 44.g4 Nd7 45.Bd2 Ne5 46.Ne5 Be5 47.Kd3 (47.h4 Kc5 48.Kb3 d3 49.Be3 Bd4-+) 47...Nc5 48.Kc2 d3 49.Kd1 Ne6 50.h4 (50.Bb4 Bf4-+) 50...Kc5 51.h5 gh5 52.gh5 Kc4 53.h6 (53.Be1 Nc7 54.Kc1-+) 53...Bf4 54.Be1 Bh6 55.f4 f5 56.Ba5 Bf4 57.Be1 Be3 58.Bh4 a5 59.Bf6 (59.Ke1 a4 60.Bd8 Nd8 61.Kf1 a3 62.Kg2 d2 63.Kf3 d1Q 64.Ke3 a2 65.Kf4 a1Q 66.Kf5 Qf3 67.Kg5 Qaf6) 59...a4 60.Bb2 (60.Be7 Kb3 61.Bf6 a3 62.Bh8 a2 63.Ba1 h5 64.Ke1 Kc2 65.Be5 d2 66.Ke2 Bc5 67.Bd4 d1Q 68.Kf2 Bd4 69.Kg2 Qg4 70.Kh2 f4 71.Kh1 Qh3) 60...Kb3 61.Bf6 (61.Bc1 f4 62.Bd2 a3 63.Ke1 a2 64.Be3 fe3 65.Kf1 a1Q 66.Kg2 e2 67.Kg3 e1Q 68.Kf3 Qae5 69.Kg2 Q5g3) 61...a3 62.Ba1 h5 0–1. Woda,Janusz – Kolinski,Stanislaw (1880), Wielkopolska Liga Seniorow Poland, 2011.

5.c4 Nbd7 6.a4 Bg7 7.Nf3 0-0 8.Be2 Ng4 9.h3 e4 (better 9...Ngf6!?=) 10.Bg7+/- ef3 11.Bf8 (11.hg4? fe2 12.Qe2 Kg7-+) 11...fe2 (11...Nf2!? 12.Kf2 fe2 13.Ke2 Nf8+/-) 12.Qe2+- Qf6 13.Nc3 (13.Qg4? Qa1 14.0-0 Nf8-+) 13...Nf8 (13...Nf2 14.Qf2 Kf8 15.Qf6 Nf6 16.Rf1+-) 14.hg4 Ne6 15.f4 b6 (15...g5 16.f5 Nf8 17.d4+-) 16.d4 Bb7 17.Nd5 Bd5 18.cd5 Nd4 19.ed4 Qd4 20.Rd1 (20.Rc1 Qb4 21.Kf2 Qf4 22.Qf3 Qd4 23.Kg3 Re8+-) 20...Qc3 (20...Qf4 21.Qf3 Qa4 22.0-0+-) 21.Kf2 Kf8 (21...Qb4 22.Kg3+-) 22.Rhe1 (22.Rh7!? Re8 23.Qd3 Qd3 24.Rd3 Re4+-) 22...Qc5 23.Qe3 (23.Kf1 Kg8+-) 23...Qc2 24.Rd2 (24.Rd2 Qa4 25.Rc1+-) 1-0. BeepBeepImAJeep (2560) - Ucitel (2580), lichess.org, 2018.

5.d4 ed4 6.ed4 Bg7 7.Qe2 Be6?? (better 7...Kf8=+) 8.d5!+- 0-0 (8...Nd5 9.Bg7 Pinning (9.Bg7 Deflection; 9.Bg7 Clearance)) 9.de6 Re8 10.Qf3 Re6 11.Be2 c6 (better 11...a6 12.Nh3 ab5+-) 12.a4?? (12.Nh3 a6 13.0-0 ab5+-) 12...Nbd7 (12...Ne4!? 13.Bg7 Kg7+/-) 13.Nh3+/- (13.bc6?! bc6 14.Nd2 Rb8=) 13...Qe7 14.Nf4 (14.Ng5 Nd5 15.Ne6 Bb2=+) 14...Re4+/- 15.Nc3 Ne5 16.Qg3 Nc4 17.Bc1 (17.Ne4? Ne4 18.Qh3 Bb2-+ (18...Nb2?! 19.0-0-/+)) 17...Re5 (17...Nh5!? 18.Nh5 Bc3 19.Qc3 Re2 20.Kd1 gh5 21.Qc4 Rf2+/-) 18.0-0+- Nb6? (better 18...Ne4 19.Ne4 Re4 20.Bc4 Rc4+-) 19.Bd3 Re8 20.a5 Nbd5 (20...Nbd7 21.a6 Nh5 22.Nh5 Rh5 23.Bd2+-) 21.Ncd5 Nd5 22.Nd5 Rd5 23.Rb1 c5 24.Qf3 Qd7 (24...Rd4 25.Be3 Ra4+-) 25.Qd5 1-0. DEFFM – GuestHBRZ, freechess.org, 2021.

5.d4 e4 6.c4 Bg7 7.d5 0-0 8.Ne2 c6 9.Ng3 Re8 10.Qc2 cb5 11.Nd2 e4 seems the pivot of the position 11...bc4 12.Bc4 Nbd7 13.Nde4 Ne4 14.Bg7 Ng3 15.hg3 Kg7 16.Ke2 Qc7 17.Rh4 Nf6 18.Qc3 h5 19.Rf4 Re5 20.Rf6 Qc4 21.Qc4 Kf6 22.f4 Bg4 23.Kf2 Ree8 24.Qc3 Ke7 25.Qc7 Bd7 26.Qb7 (26.e4 Rec8 27.Qb7 Rab8 28.Qa7 Ra8+–) 26...Reb8 27.Qa6 (better is 27.Qc7!?+–) 27...Rb2+= 28.Kg1 Rc8 29.Qf1 (29.e4 Rcc2 30.Qf1 Ra2 31.Ra2 Ra2+/-) 29...Rcc2 30.Rc1 Rg2? (better is 30...Rd2+=) 31.Qg2+– Rg2 32.Kg2 Kd8 33.e4 a6 34.e5 de5 35.fe5 Bb5 36.Kf3 Kd7 37.Kf4 a5 (37...Bd3 38.d6 Kd8 39.Rc7+–) 38.Rc5 (38.Rc5 Ba6 39.Ra5+–) 1–0. Orra Noguera,Francisco (1700) – Francas Busquets,Joan (1880), Centelles op B, 1996.

5.d4 Bg7 6.de5 Ng4 7.Nf3 Ne5 (7...0-0 8.Bc4=) 8.Ne5+= Be5 9.Be5 de5 10.Qd8 Kd8 11.Bc4 Ke7 12.Nc3 Be6 13.Bd5 (13.Be6 Ke6 14.0-0-0 f5=) 13...c6 14.Bf3 (14.Be6 Ke6 15.0-0-0 a6 16.bc6 Nc6=) 14...f5=+ 15.e4 cb5 (better 15...a6 16.bc6 Nc6=+) 16.ef5+– Nc6 1–0. onur604 (2320) – beck15 (1960), lichess.org, 2020.

5.Nf3 Be7 6.Be2 0-0 7.c4 Nh7 (7...a6!?=) 8.d4+= f6 (8...ed4 9.Bd4 Nf6 10.0-0+=) 9.0-0 Qe8 (9...e4 10.Nh4+=) 10.Nbd2 Qg6 11.Qb3 (11.Nh4 Qe8+/-) 11...Kh8 (11...e4 12.c5 Kh8 13.Nh4+=) 12.Bd3 Qg4 13.h3 Qe6 14.d5 (14.c5!? Qb3 15.Nb3+/-) 14...Qf7+= 15.Qc2 f5 16.Rac1 (16.e4 Nd7=) 16...Nd7 (16...e4 17.Ne4 fe4 18.Be4+=) 17.Nh2 (17.Be2 Nc5=) 17...Nc5 18.f4 Nd3 19.Qd3 ef4 (19...e4 20.Qa3=) 20.Rf4 Bg5 21.Rf2 Bd7 (21...a6 22.b6=) 22.Nhf3+= Be7 (22...a6 23.a4+=) 23.Nd4 Now all is on f5 23...Bh4 24.Rf3 (24.Rff1 Qe7+=) 24...Ng5= 25.Rf4 (25.Rff1 Qg6 26.Kh1 Ne4 27.Ne4 fe4=) 25...Bg3 26.Rff1 Qf6 (26...Qg6 27.N2f3=) 27.N2f3 (27.e4!? Be5 28.ef5 Bf5 29.Nf5 Bb2 30.Rc2+=) 27...Nf3 28.Rf3 (worse is 28.gf3 f4 29.Rc2 Qf7–/+; 28.Nf3?? Qb2 29.Nd4 Rae8-+ (29...Qa2?! 30.Ra1 Qb2 31.Rab1=)) 28...Be5 29.Rcf1 Bd4 (29...Kg8!?=) 30.Bd4+= Qg5 (30...Qe7 31.Rg3 Rf7 32.e4+/-) 31.Kh2 (31.e4 f4+/-) 31...Qh4 (31...Rf7 32.e4 fe4 33.Qe4 Rf3 34.Rf3+/- (34.gf3? Re8 35.Qd3 Qh4-+)) 32.Qc3 (32.e4 f4+–) 32...Rg8 (32...Rf7!?+/-) 33.Rg3 Qe7 34.Rg6 (better is 34.e4 Raf8 35.e5+/-) 34...Kh7= 35.Rg3 g5 (35...Kh8 36.e4 Raf8 37.e5+/-) 36.Bf6 (36.Qc2 Rae8+/-) 36...Qe4+= 37.Rgf3 Raf8 38.Bd4 f4? (38...Ra8 39.Qa5 Rgc8 40.Qb4+= (40.Ba7? b6 41.Qa4 Rcb8-+)) 39.ef4 (better is 39.Qa5!? c6 40.Qa7+–) 39...Rf4+/- 40.Rf4 gf4 41.Rf3 (41.Qd2 Rg3+/-) 41...Rg3 (41...c5!? 42.bc6 bc6+=) 42.Rg3+– (42.Ba7?! Rf3 43.Qf3 Qc4+=) 42...fg3 43.Kg3 Qg6 (better is 43...c6!?+/-) 44.Kh2+– Qf5 (44...Qg5 45.Be3 Qh4 46.Qd3 Kg7 47.Ba7 Qf4 48.Kg1 Qc1 49.Qf1 Qf1 50.Kf1+–) 45.Qe3 Qg5 46.Qe4 (46.Qf3 Qf5 47.Qg3 Qf8+–) 46...Qg6?? (better is 46...Bf5 47.Qf3 a6+–) 47.Qe7 (47.Qe7 Kg8 48.Qd7+–) 1–0. GuestPGJP – GuestSJTP, freechess.org, 2017.

5.c4 Bg7

6.Qb3 0-0 7.Nf3 Be6 (7...e4 8.Nd4=+) 8.d4= a6 (8...ed4!? 9.Bd4 a6=) 9.de5+= de5 10.Be5 ab5 11.Qb5 c6 (better 11...Nc6!? 12.Bc3 Ra6+=) 12.Qb7+/- Nbd7 13.Qc6?? (better 13.Bc3+/-) 13...Rc8 (13...Ne5!? 14.Ne5 Nd7 15.Nd7 Bd7 16.Qf3-+) 14.Qa4 (14.Qb5 Rc5 15.Qb2 Ne5 16.Ne5 Qa5 17.Qd2 Re5 18.Qa5 Ra5 19.a4-+) 14...Nc5?? (better 14...Ne5 15.Ne5 Ng4-+) 15.Qc2+- Bf5 16.Qc1 Nfe4 (16...Re8 17.Nbd2+-) 17.Bg7 Kg7 18.Be2 (18.Nbd2 Qa5 19.Nd4 Rfd8+-) 18...Nd3 19.Bd3 Qd3 20.Nd4 (20.Na3 Rfd8+-) 20...Rc4 21.Nf5?? (21.Qb2 f6 22.Nd2 (22.Nf5? gf5 23.Nd2 Rb8-+) 22...Nd2 23.Nf5 Qf5 24.Qd2-/+) 21...gf5-+ 22.Qd1?? (better 22.Qb2 f6 23.Nd2-+) 22...Qc2 (better 22...Qd1 23.Kd1 Rd8 24.Ke2 Rc2 25.Ke1 Rc1 26.Ke2 Rh1-+) 23.0-0+- Qb2 24.Na3?? (better 24.Qb3 Qb3 25.ab3+-) 24...Qa3-/+ 25.Qh5 Qa5 (better 25...Rc5!?-/+) 26.f3= Nf6?? (better 26...Nc3 27.Qg5 Kh8 28.Qf6 Kg8 29.Qg5 Kh8 30.Qf6 Kg8 31.Qg5 Kh8=) 27.Qg5+- Kh8 28.Qf6 Kg8 29.Rad1 (29.Qg5 Kh8+-) 29...Qa7 (29...Qa2 30.Qg5 Kh8 31.Qf5+-) 30.Rde1 (30.Qg5!? Kh8+-) 30...Re8 31.Qf5 Re6 (31...h6 32.Qf6 Re3 33.Kh1 Re1 34.Re1+-) 32.Qg5 Rg6 33.Qf4?? (33.Qd8 Kg7 34.Re2 Qc5+-) 33...Rcc6 (better 33...Rf4 34.Re2 Ra4-+) 34.g4 (34.Rf2!? Rcf6 35.Qd4 Qc7+-) 34...Rcf6 (34...Qa2 35.Ra1 Qe2 36.Qb8 Kg7 37.Qe5 Kh6 38.Qf4 Kg7 39.Qd4 Rcf6 40.h4+-) 35.Kg2?? (better 35.Qc4+-) 35…Kg7 (35...Kg7 36.Qc4 Ra6+-). ClayPigeons (2205) - MrLewisCarroll (2150), Rated Bullet game, lichess.org, 2021.

6.Nc3 0-0 7.Nf3 Bf5 8.d4 Nbd7 9.Be2 c6 10.a4 a5 11.Qb3 Ne8 (11...Qb6 12.0-0=) 12.0-0 Qc7 13.Rac1 c5 (13...Nef6 14.Rfd1=) 14.Nd5 (14.Nh4 Nef6+/-) 14...Qd8 15.de5 Ne5 16.Ne5 Be5 17.Be5 de5 18.Qc3 e4 (18...f6 19.Rcd1+/-) 19.Rcd1 Qg5 (19...f6 20.b6 Bd7 21.Rd2+/-) 20.Kh1 (20.Qe5 h6+–) 20...Be6+/- 21.Rd2 f5 (21...Bd5 22.cd5 b6 23.d6+=) 22.g3 (22.Qe5 Bd5 23.Qd5 Rf7 24.Qc5 Qe7 25.Qe7 Re7+–) 22...h5 (22...Bd5 23.cd5 Qe7 24.b6+=) 23.h4 (23.Qe5 Bd5 24.Qd5 Rf7 25.Qc5 h4+–) 23...Qh6 (23...Qd8!?+/-) 24.Qe5+– Bf7? (24...Bd5 25.Qd5 Rf7 26.Qc5+–) 25.Ne7 (better is 25.Nb6!? Qg7 26.Qc5 Qc3+–) 25...Kh7 26.Rd7 (26.Qc5 Qg7+–) 26...b6 27.Nd5 Qg7 28.Qg7 Kg7 29.Nb6 Nf6 30.Rd6 Rad8 31.Rfd1 Rd6 32.Rd6 Re8 33.Nd5 Re6 34.Rd8 Re8 35.Rd6 Re6 36.Re6 Be6 37.Nf6 Kf6 38.Kg2 Ke5 39.f3 Bc8 40.Kf2 Be6 (40...ef3 41.Bf3 Be6 42.b6+/-) 41.fe4+– fe4 42.g4! hg4 (42...Bg4 43.Bg4 Combination; 42...hg4 43.Kg3 Decoy) 43.Kg3 Bc8? (better is 43...Kd6 44.Kf4 g3 45.Kg3 Ke5+–) 44.Bg4 Bb7 45.Bh3 Ba8 46.Bc8 Bd5 (46...Kd6+–) 47.cd5 Kd5 48.Kf2 c4 49.Ke2 Kc5 50.Kd2 (50.Kd2 Kd6 51.Bf5 c3 52.Kc3 gf5 53.h5+–) 1–0. Krivoshapko,Alexander (2100) – Zikunova,Valeria, SF OCCC, 2007.

6.Nc3 0-0 7.h3 a6 8.a4 +=.

6.Nc3 0-0 7.h3 d5 8.Nf3 e4 9.Nd4 c5 10.bc6 bc6 (10...Nc6 11.Nc6 bc6 12.Rb1+=) 11.Qa4 (better is 11.Ba3!?+/-) 11...c5= 12.Nb3 d4 13.ed4 (13.Nb5!?=) 13...cd4–/+ 14.Nd1 (14.Nd5 d3 15.Bf6 Bf6–/+) 14...Nh5 15.c5 (15.Rb1!?–/+) 15...Bd7-+ 16.Bb5 (16.Qa5 Nc6 17.Qd8 Rfd8-+ (worse is 17...Nd8 18.Bd4 Bd4 19.Nd4=; 17...Rad8?! 18.Rc1-+)) 16...Bb5 17.Qb5 Qd5 18.0-0 Nd7 (18...Nf4 19.Re1-+) 19.Qa5 Nf4 20.c6 Qc6 21.Nd4?? (21.Re1 e3 22.f3-+) 21...Bd4 22.Bd4 Ne2 23.Kh1 Nd4 24.Qc3 Qc3 (24...Qd6 25.Rc1-+) 25.dc3 Ne6 26.c4 (26.f3 ef3 27.Rf3 Rfd8-+) 26...Rfc8 27.Ne3 f5 (27...Ne5 28.Rac1-+) 28.g3 (28.Rab1 Ne5-+) 28...Ne5 29.Rfd1 (29.Rad1 Nc4 30.Nc4 Rc4-+) 29...Nc4 30.Nc4 Rc4 31.Rd6 (31.Rd2 Rb8-+) 31...Ng5 32.h4 Nf3 33.Rad1 a5 (better is 33...Rc2 34.Kg2-+) 34.R6d5 (34.Kg2 Rc2 35.a4 Ne5-+) 34...a4 (34...Rc2 35.Kg2 Ra2 36.g4-+) 35.h5 (35.Kg2 Rc2 36.a3 Ra2-+) 35...Rac8 (35...Rc2 36.Kg2 Ra2 37.Rb1-+) 36.h6 (36.Kg2 Rc2 37.g4 fg4-+) 36...Rc1 (better is 36...e3 37.Kg2 e2 38.Kf3 ed1Q 39.Rd1-+) 37.Rd8 (37.Kg2 Ne1 38.Kh3 Rd1 39.Rd1 Nd3-+) 37...Rd8 38.Rc1 Rd7 (38...Rd2 39.Kg2 Ng5 40.Rc8 Kf7 41.Rc7 Ke6 42.Rc8 Ra2 43.Ra8-+) 39.Rc8 (39.Kg2 Rd2 40.a3 Ng5-+) 39...Kf7 40.Ra8 (40.Rc1-+) 40...g5 41.Ra4 (41.Kg2 Rd1 42.Ra7 Kg6 43.Rg7 Kh6 44.Rg5 Kg5 45.a3 Ra1 46.Kh3 Rg1 47.g4 fg4) 41...Rd1 42.Kg2 Rg1 43.Kh3 g4 0–1. Purczynski,Andrzej – Jarmuzek,Karolina (1770), Poznan Poland, 2014.

6.Nc3 0-0 7.h3 Re8 8.Nf3 b6 (8...e4!? 9.Nd4 c5 10.bc6 Nc6+=) 9.Be2= Bb7 10.0-0 Nbd7 11.d4 Qe7 12.Qc2 c5 13.bc6 Bc6 14.a4 e4 (14...Bb7!?=) 15.Nd2+/- Bb7 16.a5 ba5 17.Nb3 Nb6 (17...Rec8 18.Ra5 a6 19.Rb1+/-) 18.Na5+– Rec8 (18...Ba6 19.Nc6 Qb7 20.Qb3+–) 19.Nb5 (19.Nb7?! Qb7 20.Na4 Na4 21.Ra4 Rab8+/-) 19...Ba6 20.Nc6! Rc6 21.Ra6 Nfd7 (21...Qe6 22.Qb3 Qd7 23.d5+–) 22.Rfa1 Nb8 23.Ra7 Ra7 24.Ra7 Qe6 (24...N8d7+–) 25.Qb3 Rc8 (25...Nc4 26.Nc7 Rb6 27.Qb6 Nb6 28.Ne6 fe6+–) 26.d5 (26.d5 Qd7 27.Rd7 N8d7 28.Nd6+–) 1–0. marekt (2210) – heaterhog (2040), gameknot.com, 2015.

6.d4 0-0 7.de5 Ng4 8.Nf3 =.

6.d4 ed4 7.Bd4 0-0 8.Nf3 c5 9.Bb2 a6 10.a4 Bf5 (10...Be6 11.Be2=) 11.Nbd2 Nbd7 12.Qb3 (12.Be2 Qe7=) 12...b6 (12...Qe7 13.Be2=) 13.Bd3 Be6 (13...Bd3 14.Qd3 Qe7 15.0-0=) 14.0-0 a5 (14...Re8 15.Ng5+=) 15.Rfd1 (15.Rad1 Qc7+=) 15...Qc7 16.Rac1 d5 (16...Rad8 17.Ne4+=) 17.cd5+/- Bd5 18.Bc4 Bb7 (18...Bc4 19.Nc4 Rae8 20.Rd6+/-) 19.Ng5 Ne5 (19...Nb8 20.Bf7 Rf7 21.Qf7 Qf7 22.Nf7 Kf7 23.Nc4+-) 20.Be5+- Qe5 21.Nf7 Rf7? (better 21...Qe7+-) 22.Bf7 Kh8 23.Nf1 Ng4 (23...Rf8 24.f3+-) 24.h3 (24.Rd7 Qb8+-) 24...Nh6 (24...Nf6 25.Ng3+-) 25.Bd5 Bd5 26.Qd5 Qe8 27.Rc2 (27.Qc6 Qc6 28.bc6 Rc8+-) 27...Nf5 (27...Nf7 28.Rcd2 Rb8 29.Qc6+-) 28.Rcd2 Bf6 29.Qa8 (better 29.Nh2+-) 29...Qa8-+ 30.g4 (better 30.Rd5-+) 30...Nh4 31.Nh2 (31.Rd5 Bd4! 32.e4 Qf8 33.R1d4 Nf3 34.Kg2 cd4-+) 31...Nf3 (31...Qg2) 32.Nf3-+ Qf3 33.Rd6 (33.Rf1 Qh3 34.f3 Qg3 35.Kh1 c4-+) 33...c4 (33...Bh4 34.Rd8 Bd8 35.Rd8 Kg7 36.Rd7 Kh6 37.Re7-+) 34.R1d4?? (34.Rc1 c3 35.g5-+) 34...c3 (better 34...Bd4 35.ed4 Qh3-+) 35.Rf4= c2 (35...Qe2!? 36.Rdf6 c2 37.Rf8 Kg7 38.R8f7 Kg8 39.Rf8 Kg7 40.R8f7 Kg8 41.Rf8 Kg7=) 36.Rf3+/- c1Q 37.Kg2 Be5 38.Rb6 Qc5 (38...Qc4 39.Rc6 Qa2 40.Rc8 Kg7 41.Re8+=) 39.Rc6 Qd5 40.Ra6 h5? (better 40...Bc7+/-) 41.Rg6+- (41.Ra5 hg4 42.hg4 Qe4-/+) 41...hg4 (41...Qe4 42.gh5 Bg7 43.Rg4+-) 42.Rg4 (42.hg4 Qe4 43.Rg5 Bc7=) 42...Kh7 43.Rg5 (better 43.e4 Qd4 44.Rf5+-) 43...Qe4 (better 43...Kh6 44.e4 Qe4+/-) 44.Rg4 Qd5 45.e4 Qd2 (45...Qd4+-) 46.Rf5 Bc7 (46...Bg7 47.Rh5 Kg8+-) 47.Rh5 (47.Rh5 Qh6 48.Rh6 Kh6 49.f4+-) 1-0. zembelek (2060) - jaier (2135), Rated Blitz game, lichess.org, 2014.

6.d4 ed4 7.Bd4 0-0 8.Nf3 c5 9.Bb2 Qe7 10.Bd3 Nbd7 11.a4 Rd8 12.0-0 Ne5 13.Ne5 de5 14.Qc2 e4 (14...Qd6 15.Ra3+=) 15.Be2 Ng4 (15...Bg4 16.Nc3+=) 16.Bg4 (16.Nc3 Nf6=) 16...Bg4 (16...Bb2 17.Qb2 Bg4 18.Nc3+=) 17.h3 (17.Nc3 Qe5=) 17...Bf5 (17...Bf3!? 18.Bg7 Qg5–/+) 18.Bg7+= Kg7 19.Nc3 h5 20.Rfd1 Rd3 21.Nd5 Qe5 22.Nf4 Qc3 23.Qc3 (23.Qa2 Rd1 24.Rd1 Re8+=) 23...Rc3 24.Rdc1 (24.Rd5 h4 25.Rc5 Rc8 26.Nh5 Kf8 27.Rc8 Bc8+=) 24...Rc1+= 25.Rc1 Rd8 26.Nd5 Be6 27.Rd1 Bd5 28.f4 f5 29.cd5 Kf7 30.Kf2 Ke7 31.Ke2 (31.Kg3 c4 32.Kh4 Kd6–/+) 31...h4–/+ 32.Rd2 Kd6 33.Kd1 Rc8 (33...Rg8!?–/+) 34.Kc2 c4 (34...a6!? 35.ba6 ba6–/+) 35.Kc3= Rc5 36.Rd4 b6 37.Rc4 Kd5 38.Rc5 Kc5 39.Kb3 Kd5 40.Kb4 Kd6 41.Kc4 Ke6 42.Kb4 Kd6 43.a5?? (better is 43.Kc4=) 43...ba5-+ 44.Ka5 Kc5 45.Ka4 Kc4 46.Ka5 Kb3 47.Ka6 Kb4 48.b6 ab6 49.Kb6 Kc4 50.Kc6 Kd3 51.Kd5 Ke3 52.Ke6 Kf4 0–1. Baer,Cy (1895) – Dorr,Joerg (2050), RSS5E easy–38, 2007.

6.d4 Nbd7 7.Nd2 (7.Nf3 e4 8.Nfd2 0-0=) 7...0-0 8.Bd3 (8.Ngf3 Re8=) 8...Re8 (8...Qe7 9.Ne2=) 9.Ne2= ed4 10.ed4 (10.Nd4 Nc5 11.N2f3 Nd3 12.Qd3 Nd7+=) 10...c6 (10...a6 11.ba6 Ra6 12.0-0=) 11.a4 (11.0-0 cb5 12.cb5 a6=) 11...Nf8 (11...d5 12.0-0=) 12.0-0 d5 (12...Ne6 13.Re1=) 13.c5 Ne6 14.Nf3 (14.Re1 Nd7 15.Rb1 a6+=) 14...Ne4 15.Qc2 Bd7 16.Ng3 (16.Rfe1 Rc8=) 16...f5 17.Kh1 (17.Rfe1 Rc8=) 17...Nf4+= 18.bc6 (18.Ne5 Nd3 19.Qd3 Be5 20.de5 Nc5–/+) 18...bc6 19.Rad1 (19.Ne5!?+=) 19...Nd3–/+ 20.Rd3 f4 21.Ne2 Bf5 22.Nc1 (22.Bc1!?–/+) 22...Ng5-+ 23.Ne5 Qf6 24.f3 Bd3 25.Ncd3 Nf7 26.g4 (26.Qd2 Ne5 27.de5 Qf5-+) 26...Re6 (26...fg3 27.hg3 Re7 28.Kg2-+) 27.Qd2 g5 28.Re1 (28.Kg2 Rb8-+) 28...Rae8 (28...Ne5 29.de5 Qg6 30.Bd4-+) 29.Qa5 Qe7 30.h4 (30.Kg2 Qb7-+) 30...Qb7 (30...Ne5 31.de5 h5 32.gh5-+) 31.hg5 Be5 (31...Ng5 32.Kg2-+) 32.de5 Ng5 33.Kg2 Rh6 34.Qd2?? (34.Qb4 Qb4 35.Nb4-+) 34…Rh2!! (34...Rh2 35.Kh2 Nf3 36.Kg2 Nd2-+) 0–1. Roczniak,Jan – Cwieluch,J, Poland (year?).

6.Nf3 e4 7.Nd4 =.

6.Nf3 Bg4 7.Be2= 0-0 (7...e4 8.Nd4 Be2 9.Qe2=) 8.d3 (8.d4 e4 9.Nfd2 Be2 10.Qe2 a6=) 8...Nbd7 (8...a6 9.a4=) 9.Nbd2 (9.0-0 a6=) 9...Re8 (9...a6 10.a4=) 10.h3 Bf3 (10...Be6 11.d4=) 11.Bf3 e4 (better is 11...Nc5 12.Qc2 Qc8=) 12.Ne4+/- Ne5 (12...Ne4 13.Bg7 Nf2 14.Kf2 Kg7 15.Bb7+/-) 13.Nf6 (13.Be5 Re5 14.Nf6 Qf6+–) 13...Qf6 14.Be5 (14.Bb7 Rab8 15.Bc6 Nd3 16.Qd3 Qb2+–) 14...Qe5+/- 15.Rb1 Qc3 (15...Rab8 16.0-0+–) 16.Qd2 Rab8 17.Qc3 Bc3 18.Kf1 (18.Kd1 Bg7+–) 18...a6 19.a4 c6 (19...Kf8 20.Rb3 Bg7 21.g3+–) 20.g4 (20.Ke2 ab5 21.ab5 c5+–) 20...ab5 21.ab5 c5 22.Kg2 (22.Rb3 Be5+–) 22...Re7 23.Rb3 Bb4 (23...Be5 24.Ra3+–) 24.Ra1 b6 (24...Kg7 25.Ra7+–) 25.d4 Kg7 (25...g5 26.Bc6+–) 26.dc5 (26.Bd5 Ba5+–) 26...Bc5 (26...dc5 27.Rd3+–) 27.Bd5 Rf8 28.e4 (28.Rb2 f5 29.gf5 Rf5+–) 28...f5 29.gf5 gf5 30.ef5 (30.Rg3 Kh6 31.Rf3 Re5+–) 30...Rf5 31.Rf3 Rfe5 (31...Rg5 32.Kf1+–) 32.Ra8 (32.Ra8 Rg5 33.Kf1+–) 1–0. Mroz,Antoni – Zabkiewicz,Edward, corr Poland, 1986.

6.Nf3 0-0

7.d3 Bg4 8.Be2 Nbd7 9.h3 Bf3 (9...Bf5 10.e4 Be6 11.Ng5=+) 10.Bf3= Rb8 (10...e4 11.de4 Nc5 12.Qc2=) 11.a4 (11.0-0!?+=) 11...Re8 Black prepares the advance e4 12.0-0 e4 13.de4 Ne4 14.Bg7 Kg7 15.Qd3 (15.Qc2 Ndc5=) 15...Ndc5 16.Qd4 Qf6 17.Be4 Re4 18.Qf6 Kf6 19.Nd2 Re7 20.Nf3 Ne6 (20...Rbe8 21.a5=+) 21.Nd4 (21.Rfd1 Rd8=) 21...Nd4=+ 22.ed4 Re2 (22...Rbe8 23.Rfd1-/+) 23.c5 Rd2 24.cd6 cd6 25.Rfd1 (25.Rfc1 Rd4 26.Rc7 Re4=+) 25...Rd1-/+ 26.Rd1 Rc8 27.a5 Rc2 28.f3 (28.Rb1 Ra2 29.b6 Ra5 30.ba7 Ra7=+) 28...Rb2 29.b6 (29.a6!?-/+) 29...ab6-+ 30.ab6 Rb6 31.Kf2 Rb3 (31...Rb2 32.Kg3-+) 32.Ke2 (32.Re1!?-/+) 32...Rb2-+ 33.Ke3 (33.Kd3 Rg2 34.Ke4 Ke6 35.d5 Kd7-+) 33...Rg2 34.Rb1 Rh2 35.Rb7? (35.Ke4 Rh3 36.Rb6 Rh4 37.f4 g5 38.Rd6 Kg7-+) 35...Rh3 (35...Ke6 36.h4 Rh4 37.Rb5-+) 36.Rd7? (36.Ke4-+) 36...Ke6 37.Rd8 Rh1 (37...f5 38.Rg8-+) 38.Kf4 (38.Re8 Kd5 39.Ra8 f5-+) 38...Rh4 39.Ke3 Rh1 40.Kf4 Rd1 (40...Kd5 41.Rd7-+) 41.Ke4 (41.Ke3 Ra1-+) 41...h5 (better 41...f5!? 42.Ke3-+) 42.Re8 Kd7 (42...Kf6 43.Rd8 Ke7 44.Ra8-+) 43.Rf8 (43.Ra8 Ke7-+) 43...Ke7 44.Rg8 Ra1 45.Kf4 (45.Rc8 Ra3-+) 45...Ra4 (45...Ra5!? 46.Rc8-+) 46.Ke3 (46.Ke4 Ra5 47.Rh8 Kf6-+) 46...h4 (better 46...Ra5-+) 47.f4?? (47.Rh8 g5 48.Ke4-+) 47...h3 48.Rh8 Ra3 49.Ke4 Ke6 (49...Kf6!? 50.Rh7 Rb3 51.Rh8-+) 50.Re8 Kd7 (50...Kf6 51.Rh8-+) 51.Rh8 Ke7 52.Kd5 (52.Rh7 Kf6 53.d5-+) 52...Ra5 53.Ke4 (53.Kc6 Rh5 54.Rb8-+) 53...Kd7 (53...Rh5 54.Rc8 h2 55.Rc1 h1Q 56.Rh1 f5 57.Kd3 Rh1 58.d5-+) 54.Rh3 (54.d5-+) 54...f5 55.Kf3 Ra3 56.Kg2 Rh3 57.Kh3 Ke6 58.Kh4 Kd5 59.Kg5 Kd4 60.Kg6 Ke4 61.Kg5 (61.Kh5 d5 62.Kh4 d4 63.Kg3 Ke3 64.Kh4 Kf4 65.Kh5 d3 66.Kg6 Ke5 67.Kf7 d2 68.Ke7 d1Q 69.Kf7 Qd7 70.Kg6 Qe7 71.Kh5 Qg7 72.Kh4 Qg4) 61…d5 (61...d5 62.Kh4 d4 63.Kg3 Ke3 64.Kh4 Kf4 65.Kh5 d3 66.Kg6 Ke5 67.Kg7 d2 68.Kf7 d1Q 69.Kg7 Qh5 70.Kf8 Kf6 71.Kg8 f4 72.Kf8 Qf7) 0-1. Antares_Sco (1985) - GreyShark67 (2365), 2021 Autumn Marathon, lichess.org, 2021.

7.Be2 e4 8.Nd4 +=.

7.Be2 Re8 8.0-0 Nbd7 9.d4 e4 10.Nfd2 Nf8 11.Nc3 h5 12.Qc2 Bf5 13.a4 N8h7 14.g3 Ng5 15.a5 Qd7 (15...a6 16.Rfc1=) 16.Rfd1 (16.a6 b6+=) 16...Bg4= 17.Nb3 (17.a6 Nh3 18.Kf1 ba6 19.Ra6=) 17...Be2 18.Qe2 Qh3 19.Qf1?? (better is 19.f4 ef3 20.Qd2-+) 19…Nf3 (19...Nf3 20.Kh1 Qh2) 0–1. Juergen S. – Fredek (2065), Freundschaftspartie, 5m + 0s, 2006.

7.Be2 Nbd7

8.0-0 a6 9.ba6 ba6 10.Nc3 =.

8.0-0 Nc5 9.d4 ed4 10.ed4 Nce4 11.Bd3 Bf5 12.Re1 d5 13.cd5 Qd5 14.Ne5 Nd6 15.Bf1 Bb1 (15...Nb5? 16.Bc4 Qd6 17.Bb5+–) 16.Qb1 Nfe4 (16...Nb5? 17.Bc4 Qd6 18.Bb5+–) 17.Qc2 Rac8 18.Bd3 Nf6 (18...f5 19.f3 Nf6 20.Qc5+/-) 19.a4 (19.Nc6 bc6 20.Re5 cb5 21.Rd5 Nd5=) 19...c6 20.bc6 bc6 21.Rac1 Rfe8 22.g3 Bh6 23.f4 1–0. Janek – Andrew, internet, 2016.

8.0-0 e4 9.Nd4 Nc5 10.Qc2 Qe7 11.a4 a5 12.Nc3 Bd7 13.Nb3 b6 14.Nc5 dc5 15.d4 (15.f3 ef3 16.Rf3 Bc8=) 15...ed3 16.Bd3 Be6 17.e4 Rad8 18.Rfe1 (18.Nd5 Bd5 19.cd5 Nh5+=) 18...Ng4= 19.Nd5 Bd5 20.ed5 (worse is 20.cd5 Qh4 21.h3 Nf2 22.Bg7 Nd3 23.Qd3 Kg7–/+) 20...Qd6 21.g3 Rfe8 22.Be2 Bb2 23.Qb2 Qf6 24.Qf6 Nf6 25.Bd3 Kg7 26.f4 Re1 27.Re1 Re8 28.Re8 Ne8 29.Kf2 Kf6 30.Kf3 h6 31.g4 g5 32.h3 Nd6 33.Ke3 Ke7 34.Kf3 Ne8 35.Ke4 Nd6 36.Kf3 Kf6 37.Kg3 Ne8 38.Kf3 Nd6 ½–½. Sieber,Martin (2015) – Skacelik,Petr (2200), CZE, Liga, 2012.

8.0-0 e4 9.Nd4 Nc5 10.Nc3 Re8 11.a4 (11.f3 ef3 12.Bf3 Nd3=) 11...h5 (11...d5 12.cd5 Nd5 13.Nd5 Qd5 14.Rc1=) 12.Ba3 (12.f3 ef3 13.Bf3 Nd3+=) 12...a5 (12...Ne6 13.d3=) 13.Qc2 Qe7 (13...h4=) 14.g3 (14.f3!?+=) 14...h4 15.Rfe1 Nfd7 16.Bf1 Bf6 (16...Nb6 17.Bb2=+) 17.Nd5= Qd8 18.Nf6 Qf6 19.Bb2 (19.Bg2 Nb6=) 19...Qe7 (19...Ne5 20.Ra3=+) 20.Bg2 f5 (20...Nd3 21.Reb1=) 21.Ne2 (21.Rf1 hg3 22.fg3 Nd3=) 21...Ne5 22.Nf4 g5 (22...Qf7 23.Rec1=) 23.Nd5 c6?? (better 23...Qd8 24.b6 cb6=) 24.Ne7+- (24.Ne7 Re7 25.Rf1+-) 1-0. ClayPigeons (2105) - xZirezZ (2140), Rated Bullet game, lichess.org, 2019.

8.0-0 Re8 9.a4 a6 10.d4 =.

8.0-0 Re8 9.a4 Nf8 10.d4 e4 11.Nfd2 h5 12.Nc3 Bf5 13.Bc1 (13.a5 a6+=) 13...N8h7 (13...h4 14.Bb2+=) 14.f3 (14.a5 a6+=) 14...Ng5 15.fe4 Nge4 (worse is 15...Be4 16.h4 (worse is 16.Nde4 Nfe4 17.Ne4 Ne4+=) 16...Ngh7 17.Nde4 Ne4 18.Ne4 Re4 19.Bf3 Qh4 20.Be4 Qe4 21.a5+/-; worse is 15...Nfe4 16.Nce4 Ne4 17.Ra3+=) 16.Nde4 Ne4 17.Ne4 Be4 18.Bf3 Qd7 (18...f5 19.a5=) 19.Be4 Re4 20.Qf3 (20.a5 c5 21.bc6 Qc6=) 20...Rae8 Exerts pressure on the backward pawn 21.Ra2 Qe6 The pressure on the backward pawn e3 grows 22.d5 (22.Rc2 f5=) 22...Qd7 23.Raf2 Increases the pressure on the backward pawn 23...R8e7 24.Rc2 f5 (24...Bh6 25.Qf6 R7e5 26.a5+=) 25.h3 (25.Bd2 Be5=) 25...Bh6 26.g4? (better is 26.Qg3!? Qe8 27.a5+=) 26...hg4 27.hg4 Rg4 (worse is 27...Be3 28.Be3 Re3 29.Qg2 fg4 30.Rcf2+=) 28.Kh2?? (better is 28.Kf2-+) 28...Be3!! 29.Be3 Rh7 30.Qh3 Rh3 31.Kh3 Qh7 (31...Qh7 32.Bh6 Qh6) 0–1. Casa (1670) – Doda (2070), Freundschaftspartie, 5m + 0s, 2007.

8.0-0 Re8 9.Nc3 c6 (9...a6 10.d4=) 10.d4 e4 11.Nd2 Nf8 (11...c5 12.a4=) 12.a4 Bf5 (12...c5 13.dc5 dc5 14.Qc2+=) 13.a5 h6 (13...d5 14.a6 Rb8 15.ab7 Rb7 16.Ba3+/-) 14.a6+/- ba6 15.Ra6 cb5 (15...Bc8 16.Ra3+/-) 16.Nb5 Re6? (better is 16...d5+/-) 17.d5+– (17.Na7?! Qd7 18.Qa4 d5 19.Qd7 N8d7+/-) 17...Re7 18.Nd6 Qd7 (18...Ne8 19.Bg7 Kg7 20.Nf5 gf5 21.Qa1 Kh7 22.Rd1+–) 19.Qa1 (19.Bf6 Bf6 20.Nf5 Qf5+–) 19...Nh5 (19...N8h7 20.c5 Qd8 21.Nf5 gf5 22.d6+– (worse is 22.Bf6 Nf6 23.d6 Rb7+–)) 20.Bh5 Bb2 21.Qb2 gh5 22.c5 Rb8 (22...Bg6+–) 23.Qb8 (23.Qb8 Bh7 24.c6+–) 1–0. b4player – oppo, internet, 2009.

8.0-0 Re8 9.d4 ed4 10.Nd4 Nc5 11.Nc3 Bd7 12.Bf3 Qc8 (12...a6 13.a4=) 13.a4 Bg4 (13...Ng4 14.a5=) 14.Nd5+= Bf3 15.Nf6 (15.Qf3 Nfd7=) 15...Bf6 16.Qf3 Ne4 17.Qe2 (17.a5 c5 18.bc6 bc6=) 17...a6 18.Nb3 (18.Rfd1 Qd7=) 18...Qe6 (18...Qf5 19.Bf6 Qf6 20.a5=) 19.Bd4 ab5 (19...Re7 20.Qd3=) 20.ab5 White creates threats along the open a–file 20...Bd4 (20...h6 21.Qd3+=) 21.Nd4 White gets in control 21...Qe5 (21...Qf6 22.b6 Ra1 23.Ra1=) 22.Qb2 (22.b6 cb6 23.Qb2 Qc5+=) 22...Qc5 (22...Kg7 23.Rfd1=) 23.Qc2+= Nf6 24.Ra4 (24.Qd3 Nd7+=) 24...Nd7 (24...Ra4 25.Qa4 Nd7 26.Rb1=) 25.Nb3 Qe5 (25...Qg5 26.Ra8 Ra8 27.Qe4+=) 26.Rfa1 Rab8 (26...Ra4 27.Ra4 f5 28.g3+=) 27.Ra7+/- f5 28.Qd2 Nc5 (28...Nb6 29.Qc1+=) 29.Nc5 Qc5 30.Qd5 (30.Qd3 Re5+/-) 30...Qd5+= 31.cd5 Re5 32.Rd1 Kf8 (32...Kf7 33.Kf1+=) 33.Kf1 Ke8 (33...Ke8 34.Rd4 Kd7+=). Labahn,Wolfgang – Becker,Ralf, GER–ch qgA32 corr939, 1993.

5.Be2 Bg7

6.c4 Nbd7 7.a4 0-0 8.Nf3 Re8 9.a5 Nf8 (9...Qe7 10.0-0=) 10.0-0 Bg4 11.d3 c6 12.Nbd2 Qc7 13.Qb3 N8d7 14.h3 Nc5 15.Qc2 Bf5 16.Nh4 Bd7 17.d4 Ne6 18.de5 de5 19.Nhf3 Nc5 20.Bc3 (20.b6 Qb8+=) 20...Bf5 21.Qb2 Nfe4 22.Ne4 (22.b6 Qd6 23.Ne4 Ne4=) 22...Ne4 23.Bb4 c5 24.Be1 Red8 25.g4 (25.a6 b6=) 25...Be6 26.Nd2 (better 26.Qc2!? f5 27.a6=+) 26...Ng5–/+ 27.h4 (better 27.Qc2!? Nh3 28.Kg2–/+) 27...e4-+ 28.Qa2 (28.Qa3 Nf3! 29.Bf3 ef3 30.Rc1 Bg4 31.a6 ba6 32.Qa6-+) 28...Rd2?? (better 28...Nf3 29.Nf3 ef3 30.Bf3 Ba1 31.Qa1 Bc4-+) 29.Bd2=+ Nf3 30.Bf3 ef3 31.Kh1?? (better 31.a6 ba6 32.Qa6–/+) 31...Qd8 (31...Bg4 32.Rg1 Be6 33.e4-+) 32.g5 Qd7 33.Rad1 (33.Rad1 Bc4! 34.Kh2 Qg4 35.Qc4 Qg2). Jacobs,Jean – Goethals,Fernand, Belgian championship, 1970.

6.Nf3 a6 7.a4=.

6.Nf3 0-0

7.0-0 a6 8.a4=.

7.0-0 c6 8.c4 (8.d4 e4 9.Nfd2 cb5=) 8...Nbd7 (8...e4 9.Nd4=) 9.d4 Qc7 10.Nc3 Re8 (10...a6 11.a4=) 11.Qd2 (11.Qc2 ed4 12.Nd4 Ne5=) 11...Nf8 (11...e4 12.Ne1=) 12.d5 c5 (12...e4 13.Nd4 c5 14.Nb3+=) 13.a4 (13.e4 N8d7+=) 13...Qe7 (13...e4 14.Ne1+=) 14.a5 (14.e4 Nh5+=) 14...N6d7 (14...e4 15.Ne1=) 15.Na4 (15.e4 f5+/-) 15...f5 16.b6 (16.Ne1 h6+=) 16...a6 (16...e4 17.Bg7 Qg7 18.Ng5 ab6 19.ab6 Nb6 20.Nc3=) 17.g3 (17.Rab1 Nf6+=) 17...g5 (17...Nf6 18.Nc3=) 18.Kg2 (18.Qc2 Nb8+=) 18...Ng6 19.Rh1 (19.Ne1 e4=) 19...e4 20.Ng1 (20.Ne1!?=) 20...Bb2 (20...f4 21.Bg7 Qg7 22.Qc3–/+) 21.Nb2+= Nde5 (21...f4 22.Bh5+=) 22.Bh5 (22.Qc2 Nf7=) 22...Rf8 (22...f4 23.h3+= (worse is 23.gf4 gf4 24.Kf1 Qh4–/+)) 23.Ne2 (23.Re1 Bd7=) 23...Bd7 (23...f4 24.Nc3= (24.gf4?? Nh4 25.Kf1 Nef3-+)) 24.Kf1 (24.Bg6 Ng6 25.Rhg1 Ne5=) 24...Rf6 (24...Qg7 25.Nc3=) 25.Ke1 (better is 25.Nc3=) 25...Nf8 26.Ng1 g4 27.h3 (27.f4 gf3 28.Nh3 Rh6-+) 27...Rh6 28.hg4 fg4 29.f4 (29.Qc2 Be8 30.Kf1 Bh5-+) 29...ef3 (better is 29...gf3 30.Rh4-+) 30.Nd3 (30.e4 Qf6 31.Rh2 Nc4 32.Nc4 Qa1 33.Kf2-+) 30...Nd3 31.Qd3 Qe5 32.Bf7 (32.Ra2 Rh5 33.Rh5 Qh5-+) 32...Kf7 (better is 32...Kg7!? 33.Rh6 Qa1 34.Kf2 Qa2 35.Ne2 Kh6 36.e4-+) 33.Rh6 Qa1 34.Kf2 Qb2 35.Ne2 Qe2 36.Qe2 fe2 37.Rd6 Re8 (37...Bf5 38.Ke2 Bg6 39.e4-+) 38.Ke2 Re5 (38...Re4 39.Rh6-+) 39.Kd3 Rh5 40.e4 (40.Rc6 Bc6 41.dc6 bc6-+) 40...Ke7 41.e5 Re5 (41...Re5 42.Rh6 Bf5 43.Kd2 Re4 44.d6 Kf7-+) 0–1. Huovinen,Jouni – Eriksson,Johan (2370), FIN–chT, 1999.

7.0-0 Re8 8.c4 Nbd7 9.d4 e4 10.Nfd2 h5 11.Nc3 Nf8 12.Qb3 Bf5 13.a4 h4 14.a5 h3 15.g3 Ne6 16.a6+/- b6 17.f3 ef3 18.Bf3 (worse 18.Nf3 Bh6 19.Nd1 Ne4+=; 18.Rf3?! Ng5=+) 18...Ng5 19.Ba8 Qa8 20.Nd5 Nd5 21.cd5 Be6 22.Rf2 Bd5 23.Qd3 Ne4 24.Ne4 Re4 25.Re1 Qe8 26.Rc2 Re7 27.Rce2 Be4 28.Qb3 Qd7 29.Rf2 c5 (29...c6 30.bc6 Qc6 31.Rc1+=) 30.Rd1 Qg4 31.dc5 dc5?? (31...Bb2 32.cd6 Rd7+-) 32.Rd8+- Kh7 33.Bg7 Kg7 (33...Qd7 34.Rh8 Kg7 35.Qb2 Qd4 36.ed4 Kh8 37.dc5 Kg8 38.cb6 ab6+-) 34.Qc3 (34.Qc3 f6 35.Qf6 Kh6 36.Qe7 Qd1 37.Rd1 g5 38.Rf6 Bg6 39.Qe4 Kh5 40.Qg6 Kg4 41.Rf4) 1-0. DEFFM – GuestMCFN, freechess.org, 2021.

7.0-0 Ne8 8.d4+= Nd7 (8...e4!? 9.Nfd2 f5=) 9.de5+– de5 10.Be5 Be5 11.Ne5 Qf6 12.Nd7 Bd7 13.Qd4 (13.Qd7?! Qa1 14.Bf3 Qa2 15.Bb7 Rb8=+) 13...Rd8 14.Rd1 Qd4 (14...Bf5 15.Qd8 Qa1 16.Bd3 Bd3 17.Qd3 (worse 17.cd3 Qa2 18.Nc3 Qc2+=) 17...Qa2 18.c4+–) 15.Rd4+– Nf6 16.Nc3 Bf5 17.Rad1 Rd4 18.Rd4 Bc2 19.e4 (19.e4 c5 20.bc6 bc6 21.f3+–) 1–0. GuestGRDT – GuestHRCT, freechess.org, 2020.

7.d4 e4 8.Nfd2 Re8 9.0-0 Nbd7 10.c4 Nf8 11.Nc3 h5 12.Qc2 Now all is on e4 12...Bf5 13.a4 Ne6 14.Nd5 (14.Rfe1 Nd4 15.ed4 e3+=) 14...Nd7 (14...Nd5!? 15.cd5 Nd4 16.Bd4 Bd4 17.ed4 e3=) 15.a5 a6 16.Rfe1 (16.Ne4?! ab5 17.f3 c6=) 16...c6 17.bc6 bc6 18.Nb4 Qc8 (18...c5 19.dc5 Bb2 20.Qb2 Nec5 21.Nd5+=) 19.d5+– (worse 19.Ne4 Be4 20.Qe4 Rb8=+) 19...cd5 20.Bg7 Kg7 21.cd5 (21.Nd5 f6+–) 21...Nec5 (21...Qc2 22.Nc2 Nc7 23.Nc4 Nd5 24.Nd6+=) 22.Nc4+– Qc7 23.Nc6 Nb8 (23...Bg4 24.Reb1+–) 24.Qb2+– f6 25.Qb6 Qd7 (25...Qb6!? 26.ab6 (26.Nb6?! Nc6 27.Na8 Nb4+–) 26...Nb7 27.Reb1+–) 26.Nd4 Ra7?? (better 26...Rd8+–) 27.Nd6 Nd3 (27...Rd8 28.Qc5 Kh8 29.N4f5 gf5+–) 28.N4f5 gf5 29.Ne8 (29.Ne8 Qe8 30.Qa7 Kg6 31.Bd3 ed3 32.Rab1+–) 1–0. onur604 (2320) – Manni1 (2205), lichess.org, 2020.

5.Nf3 Bg7

6.Nc3 0-0 7.Ng5 (7.Be2 a6=) 7...c6 (7...h6 8.Nf3+=) 8.h4 (8.e4 Nbd7=) 8...h5 (8...h6 9.Nge4+=) 9.Bd3 (better is 9.e4+=) 9...Nh7?? (9...cb5 10.Bb5 Qa5 11.e4+=) 10.Nce4?? (better is 10.Nh7 Kh7 11.Qh5 Kg8 12.Qf3+/-) 10...d5+= 11.Nh7 (11.Ng3 Ng5 12.hg5 Qg5–/+) 11...Kh7 (11...de4!? 12.Nf8 ed3 13.Ng6 fg6 14.cd3 Qd3–/+) 12.Ng5+= Kg8 13.Ba3 (13.f4 Bg4 14.Be2 Be2 15.Qe2 ef4 16.Bg7 Kg7 17.bc6 Nc6=) 13...Re8 14.e4 (better is 14.Qf3 Bf6 15.e4+=) 14...d4?? (better is 14...f6!? 15.Nh3 de4 16.Be4 f5–/+) 15.Rb1 (15.Bc4 Be6 16.Be6 fe6+/-) 15...Qf6 (15...Qa5 16.Bb4 Qb6 17.Bc4+/-) 16.Qe2 (16.Bc4 Be6 17.bc6 Nc6 18.Be6 fe6 19.Rb7 Rab8+–) 16...Bf8 (16...cb5 17.Bb5 Nc6 18.Bc4=) 17.Bc4+= Be6 (17...Bg4 18.Qd3 Be6 19.bc6 bc6 20.Be6 fe6+/-) 18.Rb3 (18.bc6!? Nc6 19.Be6 fe6 20.Bf8 Rf8 21.Rb7+/-) 18...Bc4= 19.Qc4 cb5 (19...Ba3 20.Ra3 cb5 21.Qb5 Re7=) 20.Rb5 (better is 20.Qb5!? Na6 21.Rf3+/-) 20...Ba3+= 21.Rh3 Re7 22.Qc8 Kg7 23.Rf3?? (better is 23.Ra3 Qd6 24.Rab3=) 23...Qc6-+ 24.Rf7?? (24.Qc6 bc6 25.Rb8 Rb8 26.Ra3-+) 24...Rf7 25.Ne6 (25.Qc6 bc6 26.Rb3 Bd6 27.Nf7 Kf7-+) 25...Kf6 26.Qh8 Ke7 (26...Ke6 27.Re5 Kd6 28.Rd5 Qd5 29.ed5 Re7 (worse is 29...Kd5 30.Qg8 Ke6 31.Qg6 Ke7 32.Qe4 Kf8 33.Qd4-+) 30.Kd1 Kd5 31.Qg8 Kc6-+) 27.Re5 Threatening mate... how? 27...Qe6 28.Re6 Ke6 29.Qe8 Re7 30.Qg6 Kd7 31.Qf5 Ke8 (31...Kd6 32.Qd5 Kc7 33.Qa5 Kc8 34.Qa3 Re4 35.Kf1+=) 32.Qh5–/+ Kd7 (32...Rf7 33.Qh8 Bf8 34.Qd4–/+) 33.Qb5 (33.Qd5 Kc8 34.Qd4 Nc6 35.Qh8 Nd8 36.Qc3 Kd7 37.Qa3 Re4 38.Kd1 Rh4 39.Qd3 Ke7=) 33...Kc8-+ 34.h5 (better is 34.Qf5 Nd7 35.f4-+) 34...Re4 35.Kd1 Re7 (35...Rh4 36.Qc4 Nc6 37.Qg8 Nd8 38.Qc4 Kd7 39.Qa4 Nc6 40.Qa3-+) 36.h6 (36.Qc4 Rc7 37.Qg8 Kd7 38.h6–/+) 36...a6?? (better is 36...Bd6 37.Qc4 Kd7-+) 37.Qc4= Nc6 (better is 37...Kd7!? 38.Qb3 Kc7 39.Qa3 Nc6 40.Qg3 Kd7 41.Qg4 Kd6=) 38.Qg8+/- Nd8 39.h7 Rh7 40.Qh7 Kb8 (40...Bd6 41.Qg6 Kd7 42.Qg7 Ke6 43.Qd4+–) 41.Qh4 (41.Qg7 Bd6 42.Qd7 Bc7+–) 41...Ka7 (41...Kc7!? 42.Qg3 Bd6 43.Qg7 Kc6 44.Qd4 Kd7+–) 42.Qd4+– (42.Qd4 b6 43.g4+–) 1–0. Szepessy,Thomas – Kern,Beat, Silvaplana op2, 1993.

6.c4 0-0 7.a4 a6 8.Nc3 ab5 (8...e4 9.Nd4+=) 9.ab5= Ra1 10.Qa1 c6 11.Be2 Be6 12.0-0 Qb6 13.Rb1 Qc7 14.Ba3 (14.d4 Nbd7+=) 14...Rd8 (14...e4 15.Nd4=) 15.b6 Qd7 16.c5 dc5 17.Bc5 (17.Ne5 A) 17...Qd2? 18.Rd1+– (18.Bc5?! Ne4 19.Ne4 Qe2=); B) 17...Qe8 18.Bc5 Bf5=) 17...Nd5 (17...e4 18.Nd4=) 18.Nd5 (18.d4 Bg4 19.Ne5 Be5 20.Nd5 cd5 21.Bg4 Bh2 22.Kh2 Qg4+=) 18...Bd5 (better is 18...Qd5!? 19.d4 e4+=) 19.Ne5+/- Qe6 20.d4 Be5 21.de5 Na6? (21...Bg2 22.Rd1 Rd1 23.Qd1+/- (worse is 23.Bd1 Bh3 24.Qd4 Nd7+=)) 22.Bd4 (22.Ba6 ba6 23.Rb4 a5+–) 22...Be4 23.Rc1 (23.Ba6 Bb1 24.Qb1 c5 25.Bc5 ba6+–) 23...Nb4 24.Bc4 (24.Qa7 Bd3 25.Qa5 c5 26.Bc5 Nc6+/-) 24...Bd5 (24...Qg4 25.Bf1+/-) 25.Bd5 (25.Bf1 Be4+–) 25...Nd5 26.Qa7 Rd7 (26...Qd7 27.Qa4+/-) 27.Ra1 (27.Qb8 Kg7+–) 27...Kg7 (27...Qe7 28.Qa4+–) 28.Qb8 Ne7 29.Ra7?? (29.Qe8 Rd5 30.Ra8 g5+–) 29...Nf5?? (29...c5!? 30.Ra8 g5 31.Qh8 Kh6–/+) 30.Rb7?? (30.Ra8!? Kh6 31.Qf8 Kg5 32.Qb4+–) 30...Nd4 (better is 30...Qc4!? 31.g3 Nd4 32.Rd7 Nf3 33.Kg2 Ne1 34.Kg1 Nf3 35.Kg2 Ne1 36.Kg1 Nf3=) 31.Rd7+/- (31.ed4 Qc4 32.g3 Rd4-+) 31...Qd7 (31...Qc4 32.Rf7! Kf7 33.Qc7 Ke8=) 32.ed4+– Qd4 33.h3 Qf4 34.Qc7?? (better is 34.g3 Qd4 35.h4+–) 34...Qc1= 35.Kh2 Qf4 36.Kg1 Qc1 37.Kh2 Qf4 38.Kg1 ½–½. Bini,Gabriele – Bildat,Juergen (2175), Canarias en Red prel 4th, 2004.

6.c4 0-0 7.Be2 Nbd7 8.0-0 Re8 9.d3 Nf8 10.Nbd2 h5 (10...a6 11.a4=) 11.h3 N6h7 12.a4 a5 13.ba6 Ra6 14.Qc2 (14.d4 ed4 15.Bd4 Nf6=) 14...b6 (14...Ne6 15.Rfe1=) 15.Bc3 c5 16.Ne4 f5 17.Ng3 h4 18.Nh1 Ne6 19.Rad1 (19.Kh2 Qe7=) 19...Bd7 (19...Bb7 20.Kh2=+) 20.Ra1 g5 (better 20...Bc6=+) 21.Qa2?? (21.Rfb1 Nf6=) 21...Qa8?? (better 21...e4 22.Bg7 ef3 (22...Kg7?! 23.Nd2=; 22...Ng7?! 23.de4 fe4 24.Nd2=) 23.Bf3 Kg7-+) 22.Bd1= Bf6 23.Qc2 g4 (23...Bc6!?=+) 24.hg4+= fg4 25.Nh2 h3 26.Bg4?? (better 26.f3+=) 26…Qg2 0-1. Antares_Sco (1965) - Semiyoda (2370), Hourly Blitz Arena, lichess.org, 2021.

6.Bc4 0-0 7.0-0 d5 8.Bb3 e4 9.Nd4 c5 10.bc6 bc6 11.c4 Ba6 (11...c5 12.Ne2 dc4 13.Bc4=+) 12.Nc3 (12.Na3 c5 13.Ne2 Qd6=) 12...dc4=+ 13.Bc2 c5 14.Nde2 Bb7 15.Ng3 Will e4 fall? 15...Re8 16.Qe2 Qe7 17.Qc4 e4 seems the pivot of the position 17...Ba6 18.Nb5 Qd7 (18...Nbd7!? 19.Rab1 Bb7=) 19.a4+= Qd2? (better 19...Bb7+=) 20.Bf6+- Bf6 (20...Bb5 21.Qb5 Nd7 22.Bg7 Qc2 23.Qd7 Kg7 24.Rac1+-) 21.Ne4 (21.Be4?! Ba1 22.Ba8 Be5+/-) 21...Re4 (21...Qd8 22.Rad1 (22.Nf6?! Qf6 23.Qc5 Rc8+-) 22...Qe7 23.Qd5+- (23.Nf6?! Qf6 24.Qc5 Rc8+-)) 22.Qe4 Bb5 23.Rad1 (23.Qa8?! Bf1 24.Qb8 Kg7 25.Rf1 Qc2 26.Qa7 c4+-) 23...Bc6 24.Rd2 Be4 25.Be4 Bc3 (25...Nc6 26.Bc6 Rc8+-) 26.Rd8 Kg7 27.Ba8 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

6.Bc4 0-0 7.0-0 Nbd7 8.d4 e4 9.Nfd2 d5 10.Bb3 Re8 (10...a6 11.ba6 b6 12.c4 Ba6 13.Nc3=) 11.c3 (11.c4 dc4 12.Nc4 a6=) 11...Nf8 (11...a6 12.ba6 b6 13.c4=) 12.c4 c6 (12...Bg4 13.Qc1=) 13.Nc3 h5 (13...Bg4 14.Qb1=) 14.Ba3 N8h7 (14...h4 15.bc6 bc6 16.h3+=) 15.bc6+– bc6 16.Ba4 (16.Rb1 h4+–) 16...Bd7+= 17.Bc5 h4 18.cd5 (18.h3 Ng5+=) 18...cd5= 19.h3 Ng5 20.Rb1 Qc8 (20...Ne6 21.Bd7 Qd7 22.Nb3=) 21.Bd7 (21.Bb3 Qc6+=) 21...Qd7 22.Qb3 Nh3? (better 22...Ne6=) 23.gh3+– Qh3 24.Bd6 Rad8 25.Bc7 (better 25.Bf4+=) 25...Ng4–/+ 26.f3 Ne3 27.Rf2 Bd4 28.fe4?? (28.Ne2 Ng4! 29.Nd4 Nf2 30.Kf2 e3 31.Qe3 Re3 32.Ke3 Re8 33.Kd3-+) 28...Ng4 (28...Re7 29.Ne2 (29.Nd5?? Rc7 30.Nf1 Qg4 31.Kh2 Be5 32.Kh1 Qe4 33.Kg1 Nd5-+) 29...Rc7 30.Qd3-+) 29.Nd1 Nf2 (29...Bf2 30.Nf2 Nf2 31.Bd8 de4 32.Bg5-+) 30.Nf2 Qb3 31.Nb3 Rc8 (better 31...Bf2 32.Kf2 Rc8-+) 32.Nd4–/+ Rc7 33.ed5 Rd7 34.Rb5 a6 (34...Kg7 35.Nd3–/+) 35.Ra5 Red8 (35...Re3!?–/+) 36.Nc6= Rd5?? (better 36...Ra8=) 37.Ne7+– Kf8 38.Nd5 (38.Rd5?! Ke7 39.Re5 Kd7=) 38...Rd6 (38...f5 39.Nb4+–) 39.Kg2 Ke8 (39...f5 40.Kh3+–) 40.Kh3 g5 1–0. onur604 (2320) – MIGHTY_THOR (2005), lichess.org, 2020.

6.d3 0-0 7.Be2= c6 8.a4 h6 9.0-0 Be6 10.d4 e4 11.Nfd2 d5 12.c4 Nbd7 13.Nc3+= Nh7 14.cd5 cd5 15.Bg4 f5 16.Be2 g5 17.Rc1 Nhf6 18.h3 f4 19.ef4 gf4= 20.Bg4? Ng4-+ 21.hg4 Qh4 22.Qe2?? Bg4 23.f3 Bd4 (23...Bd4 24.Rf2 e3-+) 0–1. mic (2185) – gtan (2340), net–chess.com, 2008.

6.d4 ed4 7.Bd4 0-0 8.Be2 c5 9.Bb2 d5 10.c4 Be6 11.Nbd2 Nbd7 12.0-0 Nb6 13.Qc2 Rc8 14.Rfd1 Qe7 15.a4 Bf5 16.Bd3 Bd3 17.Qd3 Rcd8 (17...Rfd8 18.a5 Nc4 19.Nc4 dc4 20.Qc4 Rd1 21.Rd1+=) 18.Qc2 Rfe8 19.h3 Nc8 20.a5 h6 21.a6 b6 22.Ne5 Qe6 23.Ndf3 Ne7 24.Ra3 Nd7? (better is 24...dc4!? 25.Rd8 Rd8=) 25.cd5 Nd5 26.Nc6 Nb4 27.Nb4 (27.Nd8!? Rd8 28.Qc1+–) 27...cb4 28.Rad3 Rc8 29.Qd2 (29.Qb1 Nc5 30.Rd6 Qb3 31.Bg7 Qb1 32.Rb1 Kg7 33.Rb4 Rc7+/-) 29...Bb2 (29...Nc5!? 30.Rd6 Qa2 31.Bg7 Qd2 32.Nd2 Kg7=) 30.Qb2+/- Nc5 31.Rd4 b3 32.Rb4 Red8 33.Nd4 Qe4 34.Qe2 Kh7 35.Qc4 Kg8 36.Rd2?? (better is 36.Qf1+=) 36...Na6!-+ 37.Qb3 (37.ba6 Rc4 Discovered attack) 37...Nb4 38.Qb4 Rc1 39.Kh2 Qe5 40.g3 (40.f4 Qe3 41.Nf3 Rd2 42.Qd2 Qd2 43.Nd2-+) 40...Qd5 (better is 40...Qe4 41.f3 Qe3-+) 41.f3 Rc4 (41...Qc5 42.Qb2-+) 42.Qb2 Qc5 43.Kg2 Rb4 44.Qa2 Qc3 45.Kf2? (better is 45.Re2 Re8 46.Rc2–/+) 45...Re8 46.Re2 Qc8 (better is 46...Re3! 47.Re3 Qd4-+) 47.g4? (better is 47.Nc6 a5 48.Nb4 ab4 49.Kg2+=) 47...Qc7 48.Kg2 Rc4 49.Nc6 Rc5 50.Nd4 Rc3 51.Qd2 Rc4 52.Qa2 h5 53.Qd2 (53.gh5 Re5 54.f4 Rh5-+) 53...h4 54.Qe1 g5 (54...Qe5!? 55.f4 Qe4 56.Kf2-+) 55.Qf2 Rc3 56.Nf5 Qe5 57.Ra2 Rec8 58.Qe2 Qc7 59.Rd2 Rc2 60.Ne7 Kf8 61.Nc8 Qg3 62.Kf1 Qh3 63.Qg2 Rc1 64.Kf2 Qg3?? (better is 64...Qg2 65.Kg2 Rc8–/+) 65.Qg3= hg3 66.Kg3 Rc8 67.f4 Rc5 68.Rd7 Rb5 69.Ra7 Rb3 70.Kf3 gf4 71.Kf4 Kg7 72.Rb7 Rb1 73.e4 Kf6 74.e5 Ke6 75.Ke4 Rb5 Exerts pressure on the isolated pawn 76.Kf4 Rb4 (76...Re5?? 77.Rb6 Kd5 78.Rb5 Kd6 79.Re5+–) 77.Kg3 Rb3 78.Kh4 b5 79.Kg5 ½–½. Schwichtenberg,Juergen (2000) – Strozewski,Guenter, EU–ch Seniors, 2005.

6.d4 Nbd7 7.Be2 e4 8.Nfd2 0-0 9.c4 Re8 10.a4 Nf8 11.0-0 h5 12.Nc3 N8h7 13.Qb3 Ng5 14.h4 Nh3? (better 14...Ne6+=) 15.gh3+- Bh3 16.Rfe1 Ng4? (better 16...c5+-) 17.Nce4 (17.Nde4 Qh4 18.Bf3 Nf2+/-) 17...Qh4 (17...Nf6 18.Ng5 Bg4 19.e4+-) 18.Nf3 Qd8 19.Neg5 Nf2 20.Kf2 Bg4 21.Nf7! Qf6?? (21...Kf7 22.Kg1 Combination) 22.N7g5 Bh6 (22...Rf8 23.Kg2+-) 23.c5 Kg7 (23...d5 24.Qd5 Kg7 25.Ne4+-) 24.d5 Re5 25.cd6 Bg5 (25...Bf3 26.Ne6 Kh7 27.Be5 Qe5 28.Bf3 cd6+-) 26.Be5 Bh4 27.Kg1 Qe5 28.Ne5 (28.Ne5 Bf5 29.Qc4+-) 1-0. onur604 (2320) - dav_san (2230), Casual Rapid game, lichess.org, 2021.

6.Be2 a6 7.c4 ab5 8.cb5 0-0 9.0-0 Bd7 (9...e4!? 10.Nd4 c5 11.bc6 Nc6+=) 10.Nc3 c6 11.a4 c5 12.Ba3 (12.e4 b6+=) 12...Re8 (12...Bf5=) 13.Bc4 (13.e4 Nh5=) 13...Be6 (13...e4!? 14.Ng5 d5+=) 14.Be6= fe6 15.Ng5 h6 16.Nge4 Ne4 17.Ne4 b6 18.Bc1 (18.Bb2 d5 19.Ng3 Nd7=) 18...d5+= 19.Nc3 e4 20.Ra3 (better is 20.Bb2!?+=) 20...Nd7–/+ 21.f3 ef3 22.Qf3 Rf8 23.Qg4 Rf1 24.Kf1 Qf6 25.Kg1 h5 26.Qe2 Qe7 27.e4 (27.a5 ba5 28.Ra2 Ne5-+) 27...d4 (better is 27...Bd4 28.Kh1 Rf8-+) 28.d3?? (28.Nd1 Ne5-+) 28...Qf8 (better is 28...dc3 29.g3-+) 29.Qa2?? (29.Nd1 c4 30.a5 cd3 31.Qd3 ba5-+) 29...Qe8 (29...dc3 30.Qe6 Kh8 31.Be3-+ (31.Qd7?? Bd4 32.Qd4 cd4-+)) 30.a5?? (30.Ne2 Qf7 31.h4 Bf8-+) 30...ba5 (better is 30...dc3 31.Be3 Ne5-+) 31.Ne2 Kf7 (31...Qf7 32.h4 e5–/+) 32.Nf4 Bh6 33.Ne6 (better is 33.Ra5!? Ra5 34.Qa5+=) 33...Qe6+= 34.Bh6 Qa2 35.Ra2 a4 36.Bf4 Ke6 37.Bc7 a3 38.Kf2 Ra4 39.b6 Nb6 40.Bb6 Rb4 41.Ra3 (41.Bc5?? Rb2 42.Ke1 Ra2-+) 41...Rb6 42.Kf3 Rb1 43.Ra6 Kf7 44.Rc6 Rf1 45.Kg3 Rc1 46.Kf4 Rc2 47.g3 Rh2 48.Rc5 Rd2 49.Kg5 Rd3 50.Rc7 (50.Kf4!?+=) 50...Ke6–/+ 51.Rc6?? (better is 51.Kf4 Rc3 52.Rg7–/+) 51...Ke5-+ 52.Kh4 g5! (52...Ke4?! 53.Rg6 Re3 54.Rd6-+) 53.Kh3 (53.Kg5 Rg3 Double attack (53...Rg3 Deflection; 53...Ke4 Zwischenzug)) 53...h4 54.Rc5 (54.Kg2 Rg3 55.Kf2 g4-+) 54...Ke4 55.Rg5 (55.Kh2 Rg3 56.Rc4-+) 55...Rg3 56.Rg3 hg3 0–1. Donadon,Ivan – Guzman,Diego (1770), Buenos Aires ARG, 4th Duchamp Open, 2012.

6.Be2 c6 7.a4 0-0 8.0-0 a5 9.d4 e4 10.Nfd2 d5 11.c4 Be6 12.Nc3 b6 (12...Re8 13.cd5 Bd5 14.Nd5 Nd5 15.Qc2+=) 13.Qb3 dc4 14.Bc4 Bd5? (better 14...Re8+–) 15.bc6+– (15.Nd5?! cd5 16.Be2 Re8+=) 15...Bc6 16.Ba3 Re8? (16...Nbd7+–) 17.Bf7 Kh8 18.Be8 Ne8 (18...Qe8 19.Qb6 Nd5 20.Nd5 Bd5 21.Qd6+–) 19.Nde4 Nf6 (19...Nd7 20.Rac1+–) 20.Nd6 Be8 21.Rab1 Nc6 (21...Nbd7 22.e4+–) 22.Qb6 Qd7 23.Rb5 Rb8 (23...Kg8 24.Rfb1+–) 24.Qc5 Rd8 (24...Rb5 25.ab5 Nb4 26.Ne8 Ne8 27.b6+–) 25.Rb7 Qg4 (25...Qe6 26.d5 Nd5 27.Qd5+–) 26.Ne8 Ne8 27.Qc6 h5 (27...Rc8 28.Qe4 Qg5 29.Rfb1+–) 28.Re7 Nf6 29.Rg7! Kg7 30.Be7 A double attack 30...Rf8 31.Bf8 Kf8 32.Qf6 (32.Qf6 Ke8 33.Rb1 Qf5 34.Rb8 Kd7 35.Rd8 Kc7 36.Qe7 Qd7 37.Rd7 Kc6 38.Qd6) 1–0. GuestMVXY – chiklet, freechess.org, 2020.

6.Be2 Bg4 7.0-0 0-0 8.h3 Bf3 9.Bf3 e4 10.Be2 d5 11.d4 Nbd7 12.a4 Qe7? (better 12...Rc8=) 13.Ba3+- c5? (better 13...Qe6 14.Bf8 Rf8+-) 14.Nd2 (better 14.bc6 Qe6 15.cd7+-) 14...Rfc8 Black prepares c4 15.Nb3 b6 16.Rc1 Qe6 17.c3 (better 17.c4!?+=) 17...c4=+ 18.Nd2 a6 19.Bb4 ab5 20.ab5 Ne8 21.Qc2 Nd6 (21...Nc7 22.Ra1-/+) 22.Ra1 (better 22.Bd6!? Qd6 23.Ra1=) 22...Nb5-/+ 23.Ra8 Ra8 24.Bg4 f5 25.Be2 Nb8 26.g4 (26.Qb2 Nc6-/+) 26...Nc6-+ 27.Kg2 (27.Rb1-+) 27...Nb4 28.cb4 Bf8 29.Nb1? (29.gf5 gf5 30.f3 Kh8 (worse 30...Bb4 31.Nc4 Nc3 32.Nb2-+) 31.Nc4 dc4 32.Bc4 Qg6 33.Kh1 Na3-+) 29...Bb4 (29...f4!? 30.ef4 Nd4 31.Qd2 Ne2 32.Qe2 Bb4 33.f3-+) 30.Qb2 Qd6 Black prepares the advance c3 31.Nd2 (31.gf5 gf5 32.Kh1 Kh8-+) 31...Nc3 32.Re1 (32.Bc4 fg4 33.Bb3 gh3 34.Kh1-+) 32...Ne2 33.Re2 (33.Nc4 A) 33...Be1 34.Nd6 Nc3 A1) 35.gf5?! Ra2 36.Qb6 Rf2 37.Kh1 Rf1 (37...gf5?? 38.Qd8 Kg7 39.Qg5 Kf8 40.Qf6 Kg8 41.Qf7 Kh8 42.Qf8) 38.Kh2 Rf2 (38...gf5 39.Qd8 Kg7 40.Qg5 Kf8 41.Qf6 Kg8 42.Qf7 Kh8 43.Qf8) 39.Kh1 Rf1 (39...gf5 40.Qd8 Kg7 41.Qg5 Kf8 42.Qf6 Kg8 43.Qf7 Kh8 44.Qf8) 40.Kg2 Rf2 41.Kh1=; A2) 35.Qb6 fg4 36.Nc8 gh3 37.Kh3 Rc8 38.Qe6 Kg7 39.Qd7 Kh6 40.Qc8 Nd1+-; A3) 35.Kf1 Bf2 36.Qc3+- (worse 36.Qf2 Ra1 37.Kg2 Ra2-/+); B) 33...dc4 34.Rb1 f4 35.Qb4 f3 36.Kh1 Qb4 37.Rb4 Ra1 38.Kh2 Rf1-+) 33...c3 34.Qc2 cd2 35.Rd2 0-1. kasperoff (1845) - ashes2076 (2125), Daily SuperBlitz Arena, lichess.org, 2020.

6.h3 0-0 7.Be2 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Bd7 11.0-0 Qe8 12.c4 Be6 13.Qb3 Nbd7 14.d4 ed4 15.Nd4 Nc5 16.Qb4 Bd7 17.Bf3 Nfe4 18.Nd2 (18.Rd1 Ng5 19.Nd2 Bh3=+ (worse 19...Nf3 20.N4f3 f6 21.Bd4+=)) 18...Nd3 19.Qa5 Nd2 (19...Nef2 20.e4 f5 21.Qc7 fe4=+ (21...Ne4?! 22.Be4 fe4 23.Rf8 Bf8 24.Qb7+=)) 20.Qd2+= Ne5 21.Qd3?? (better 21.Bb7 Nc4 22.Qa2 Bd4 23.Qc4+=) 21…Nd3-+ 0-1. kasperoff (1875) - Hichamov24 (2100), Weekly SuperBlitz Arena, lichess.org, 2020.

6.Be2 0-0

7.0-0 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 c6 11.c4 cb5 12.cb5 Nbd7 13.d4 Qe7 14.de5 de5 15.Qc2 Nd5 16.Nc3 Nb4 (16...Nc3 17.Bc3 b6 18.Ra1=) 17.Qe4 Nb6 (better 17...Re8!?+=) 18.Rb1+- Na2 19.Na2 Now all is on e5 19...Bf5 20.Qb4 Qb4 21.Rb4 (worse 21.Nb4 Bb1 22.Ne5 Re8=+) 21...Ra8 22.Be5 (22.Ne5? Ra2 23.Bd4 Re2-+) 22...Ra2 23.Bf1 Be5 24.Ne5 Ra1 25.g4 Be6 26.Kg2 f6 27.Nf3 Nd5 28.Re4 Kf7 29.Bc4 Rc1 30.Bb3 Rc3 31.Nd4 Nf4 32.Rf4 (worse 32.ef4 Bb3 33.Re3 Bd5 34.Kg3 Rc1+/-) 32...Bb3 33.g5 (33.Nb3?! Rb3 34.g5 f5+=) 33...f5 34.e4 (34.Nb3?! Rb3 35.Rc4 Rb5 36.Rc7 Kg8+=) 34...Rd3 (34...Be6+-) 35.ef5 Bd5 36.f3 gf5?? (36...Rd2 37.Kg3 Kg8+-) 37.Rf5 (37.Rf5 Ke8 38.Re5 Be6 39.Ne6+-) 1-0. onur604 (2320) - Shakarim (2300), Casual Rapid game, lichess.org, 2021.

7.0-0 b6 8.c4 Bb7 9.h3 Nbd7 10.Re1 e4 11.Nh2 Nc5 12.d4 ed3 13.Bd3 Re8 14.Bc2 Qe7 15.Nd2 Rad8 16.Bd4 d5 17.Rc1 Ne6 18.Bb2 (better 18.Nhf3!?=+) 18...dc4-+ 19.Qe2?? (19.Nhf1 Qb4 20.Bf6 Bf6-+) 19...Nf4! 20.Qf1? (20.ef4 Qd6 Double attack (20...Qe2 Pinning; 20...Qe2 Deflection; 20...Qd6 Decoy; 20...Qe2 Clearance)) 20...Ng2-+ (20...Rd2?! 21.ef4 Re2 22.Be5 Re1 23.Re1-/+) 21.Nc4 Ne1 22.Re1 Ne4 23.Bg7 Kg7 24.Qe2 (24.Be4 Be4 25.Qe2 Qg5 26.Ng4 A) 26...Qb5?! 27.Nd6 Qe2 28.Ne8 (28.Re2?? Rd6 29.Re1 Rd2-+) 28...Re8 29.Re2-+; B) 26...h5-+) 24...h5 (better 24...Qg5 25.Qg4 Qb5-+) 25.Nf3 (25.Be4 Be4 26.f3 Bd3 27.Qb2 Kg8-+) 25...Qf6 (better 25...Nc3!? 26.Qf1 Bf3 27.Kh2-+) 26.Nce5 (26.Be4 Be4 (worse 26...Re4 27.Ncd2-+) 27.Nce5 Re5 28.Ne5 Qe5-+) 26...Re5 27.Ne5 Qe5 28.Be4 Be4 29.f3 (29.h4 Qf5 30.f3 Bf3 31.Qb2 Kh7 32.Qg2 Bg2 33.Rb1 Rd2 34.Rb2 Qf2 35.Kh2 Qh4 36.Kg1 Qh1) 29...Qg3 30.Qg2 Qe1 31.Kh2 Rd2 32.Qd2 (32.fe4 Rd1 33.a3 Qe3 34.Qg3 Qd2 35.Qg2 Qf4 36.Qg3 Rd2 37.Kh1 Qg3 38.e5 Qe1) 32...Qd2 33.Kg3 (33.Kg1 Bf3 34.Kf1 Qe2 35.Kg1 Qg2) 33...Qe3 34.h4 (34.Kg2 Qf3 35.Kg1 Qg2) 34...Qf3 35.Kh2 Qg2 0-1. kasperoff (1885) - eazywin (2275), Hourly SuperBlitz Arena, lichess.org, 2021.

7.0-0 c6 8.a4 cb5 9.ab5 Bd7 10.c4 Be6 11.d4 ed4 12.Nd4 Bf5? (better 12...Qc7+=) 13.Nf5+- gf5 14.Bd3 Ne4 (better 14...d5+-) 15.Bg7 Kg7 16.Be4 fe4 17.Qg4 Kh8 18.Qe4 Qc7 19.Qd4 f6 20.Nc3 Nd7 21.Ne4 a5 22.ba6 Ra6 23.Ra6 ba6 24.Nd6 Ne5 25.c5 Rg8 26.f4 Qc6 27.e4 Ng4 (27...Nd7 28.Rc1 a5+-) 28.h3 Nh6 (28...h6+-) 29.Qf6 Rg7 30.Nf7! Nf7 31.Qc6 a5 32.Qe8 Rg8 33.Qf7 a4 (33...Rd8 34.Qf6 Kg8 35.Qd8 Kf7 36.Qd7 Kg6 37.Rb1 h6 38.Rb6 Kh5 39.Qg4) 34.Qf6 Rg7 35.Rd1 h5 (35...h6 36.Rd7 Kh7 37.Qg7) 36.Rd7 (36.Rd7 Kh7 37.Qg7) 1-0. onur604 (2320) - javad_j (2215), Casual Rapid game, lichess.org, 2021.

7.0-0 c6 8.a4 Be6 9.d4 ed4 10.Bd4 Nbd7 11.c4 d5 12.c5 (12.cd5 Nd5 13.a5 cb5 14.Bb5 Nc5+=) 12...cb5 (12...Ne4!?=) 13.ab5+= Qe7 14.Nbd2 (14.c6 Nb6+/-) 14...Ne4 c5 draws heavy fire (better 14...Nc5!? 15.Nb3 Nb3 16.Qb3 Ne4=) 15.Bg7 Kg7 16.Ne4 de4 17.Qd4 Kg8 18.Qe4 Nc5 19.Qb4 b6 20.Nd4 Bd5 21.Nc6 Qg5 22.g3 Bc6 23.bc6 Rac8 24.Ra7 Rc6 25.Bb5 Rf6 26.Rd1 h5 (26...Rc8 27.Rd2+=) 27.Qd4 Kg7 28.Re7 (28.Bc4 Qf5 29.Qb2 Ne4+=) 28...Qf5 29.f4 (better 29.Qb2+/-) 29...Ra8? (better 29...Ne6 30.Qd3 Rd8=) 30.e4 Qh3?? (better 30...Qg4 31.Bc4 Kf8+-) 31.e5 (better 31.Bc4 Rf8 32.Rb1 Ne4 33.Rb6+- (33.Qe4?! h4 34.Rb3 hg3 35.hg3 Rh8+-)) 31...Re6+= 32.Re6 Ne6 33.Qf2 (33.Qb6?? Ra2 34.Qf2 Rf2 35.Kf2 Qh2 36.Kf1 Qg3-+) 33...Qf5 (33...h4!?+=) 34.Bd3+/- Qg4 35.Be2 Qf5 36.Bd3 Qh3 (better 36...Qg4!? 37.Rb1 Nc5+=) 37.Bf1+/- (37.Qb6?? Ra2 38.Qf2 Rf2 39.Kf2 Qh2 40.Kf3 h4-+) 37...Qg4 38.Be2 Qf5 39.Bd3 ½-½. kasperoff (1905) - Teresias (2110), Hourly SuperBlitz Arena, lichess.org, 2020.

7.0-0 Nbd7 8.c4 Re8 9.Nc3 Nf8 10.d4 e4 11.Nd2 h5 12.f3 ef3 13.Bf3 Re3 14.Nde4 Ne4 15.Ne4 (worse is 15.Be4 Ne6 16.Rf3 Rf3 17.Qf3 Bd4 18.Kh1 Rb8–/+) 15...Qe7 16.Qd2? (better is 16.Re1!? Re1 17.Qe1+=) 16...Re4-+ 17.Be4 Qe4 18.Rae1 Qh4 19.Re8 b6 20.g3 Qg4 21.Qf2 Qd7 (better is 21...f5!?-+) 22.Rfe1+= Bb7 23.R8e7 Attacks the backward pawn on f7 23...Qf5 24.Rc7 Be4?? (better is 24...Bf3 25.d5 Nh7+=) 25.Re4+– Qf2 (better is 25...Ne6 26.Re7 Qe4 27.Qf7 Kh7 28.Qg7 Ng7 29.Re4 a6 30.ba6 Ra6+–) 26.Kf2 Ne6 27.Rd7 (27.Rd7 Rc8 28.Rd6 Rc4 29.Ke1+–) 1–0. Kotula,Konrad (1800) – Wieczorek,Aleksandra (1635), Polanica Zdroj op–C Poland, 2009.

7.0-0 Bf5 8.a4 Nbd7 9.d4 c6 (9...Qe7!?=) 10.de5+= Ne5 11.Ne5 (11.Be5?! de5 12.bc6 bc6=+) 11...de5 12.Be5 Nd5 (12...Qd1!? 13.Bd1 Rfc8+=) 13.Bg7+– Kg7 14.bc6 bc6 15.Bd3 Be6 16.Nd2 f5 17.Nf3 Qc7 (17...Qf6 18.Nd4+–) 18.Qd2 White intends a5 18...Rad8 19.c4 Nb6 20.Qc3 Kg8 21.a5 Nd7 22.Ng5 Bf7 23.Rfd1 Ne5 24.Be2 Rd1 25.Rd1 h6 26.Nf7 Rf7 27.f4 Nd7 28.c5 Re7 29.Rd6 Re4?? (better 29...Kh7+–) 30.Rg6 Kf8 (30...Kf7 31.Qg7 Ke8 32.Rh6 Kd8 33.Rh8 Re8 34.Re8 Ke8 35.Bh5 Kd8 36.Qg8 Ke7 37.Qe8 Kf6 38.Qf7) 31.Qh8 Ke7 32.Rg7 Ke6 33.Qg8 Kf6 34.Qf7 1–0. onur604 (2275) – Allenisme (2030), lichess.org, 2020.

7.0-0 Bg4 8.h3 Be6 9.c4 Nbd7 10.d4 e4 11.Nh2 (11.Nfd2 d5+=) 11...d5 12.c5 c6 13.a4 Ne8 14.Nd2 f5 15.f4 Nc5 (15...Rc8 16.Ba3=) 16.Ba3+= Nd7 17.Bf8 Nf8 (17...Bf8 18.bc6 bc6 19.Nb3+=) 18.Rc1 Bd7 19.Nb3 Ne6 20.Nc5 Nc5 21.Rc5 Nc7 22.Qb3 Ne6 23.Rc2 (better 23.bc6 bc6 24.Rcc1=) 23...c5?? (better 23...Bd4 24.ed4 Nd4-/+) 24.dc5+- d4 25.Bc4 Kf7? (better 25...Qe7 26.c6! bc6 27.bc6 Bc8+-) 26.Kf2 (better 26.c6 bc6 27.bc6+-) 26...Qe7 (26...Qh4 27.g3 Qh3 28.Rh1=) 27.Rd1 (27.c6!? bc6 28.bc6+/-) 27...d3 28.Rc3 (28.Rcc1 Kf8 29.c6 bc6 30.bc6+/-) 28...Kf8 29.Rcc1 Nc5 30.Qb4 b6 31.a5 Rd8 32.ab6 ab6 33.Rd2 Be6 34.Ra2 (better 34.Kg1-/+) 34...d2!-+ 35.Rd1 (35.Rd2 Nd3 Double attack) 35...Nd3 36.Bd3 Qb4 (36...ed3 37.Qe7 Ke7 38.Ra6+=) 37.Be4 Ba2 (37...Ba2 38.Bf3 Bb3-+) 0-1. kasperoff (1835) - BatoEngorboy (2125), Hourly SuperBlitz Arena, lichess.org, 2021.

7.a4 h6 (7...e4 8.Nd4 c5 9.bc6 Nc6 10.0-0 Be6 11.f3 Qb6=; 7...Bg4 8.0-0 (8.Nc3 e4 9.Nd4 Be2 10.Nde2 Nbd7 11.0-0 Ne5=; 8.d3 a6 9.0-0 ab5 10.ab5 Ra1 11.Ba1 Nbd7=; 8.h3 Bf3 9.Bf3 e4 10.Be2 Re8 11.0-0 a6=; 8.d4 e4 9.Nfd2 Be2 10.Qe2 a6 11.0-0 d5=) 8...a6 9.Nc3 e4 10.Nd4 Be2 11.Qe2 c5+=; 7...c5 8.d3 (8.0-0 Be6 9.Ng5 Bf5 10.d3 h6 11.Nf3 a6=) 8...Re8 9.0-0 a6 10.Nbd2 b6 11.e4 Nbd7=; 7...a6 8.0-0 (8.d4 e4 9.Nfd2 d5 10.Ba3 Re8 11.0-0 b6=; 8.Ra3 e4 9.Nd4 ab5 10.ab5 Ra3 11.Na3 c5=; 8.Nc3 e4 9.Nd4 c5 10.Nb3 Be6 11.f3 Bb3=; 8.Na3 e4 9.Nd4 ab5 10.ab5 Nbd7 11.0-0 Nc5=) 8...Bf5 9.d4 e4 10.Nfd2 ab5 11.ab5 Ra1=) 8.c4 (8.0-0 Bg4 9.Nc3 a6 10.e4 Re8 11.Re1 Nbd7=; 8.d4 e4 9.Nfd2 a6 10.c4 ab5 11.ab5 Ra1=; 8.d3 Re8 9.0-0 a6 10.Nc3 d5 11.Qd2 e4=; 8.Nc3 e4 9.Nd4 c5 10.Nb3 Be6 11.0-0 Nbd7=) 8...Nbd7 (8...e4 9.Nd4 a6 10.0-0 c5 11.bc6 bc6+=) 9.Nc3 (9.d4 Re8 10.0-0 ed4 11.Bd4 Nc5=) 9...Re8 (9...e4 10.Nd4 Ne5 11.Qc2 Re8=) 10.h3 (10.0-0 a6 11.d4 ab5=) 10...Nf8 (10...a6 11.0-0 ab5=) 11.g4 (11.0-0 Ne6=; 11.e4 Ne6=) 11...Ne6+= 12.Qc2 a6 13.Rc1 b6 14.Ra1 a5 (14...e4 15.Ne4 Bb7 16.Ng3=) 15.Rh2 Bb7 16.Kf1 (16.d3 e4 17.de4 Ne4+=) 16...Rc8 17.Rd1 Qe7 18.Ba3 Nd7 19.Ne1 (19.Nd5!? Qd8 20.e4+=) 19...Nd4!-+ 20.Qb1 (20.ed4 ed4) 20...Ne2 21.Ne2 Nc5 (21...Nf6 22.d3–/+) 22.Nc3 (22.Bc5 dc5 23.e4 Rcd8–/+) 22...Rf8 (22...Qe6 23.Qa2-+) 23.Qc2 Qe6 24.d3 f5 25.Qe2 (25.Bc5 bc5 26.gf5 Rf5–/+) 25...Rf7 (25...e4 26.d4–/+) 26.d4 (better is 26.gf5!? Rf5 27.Bc5 bc5 28.e4+=) 26...ed4-+ 27.ed4 Qe2 28.Ke2 Re8 29.Kf1 Ne4 30.Ne2? (30.Ne4 Be4 31.Bb2 d5 32.cd5 Bd5 33.gf5 Bc4 34.Kg1 Rf5-+) 30...Bc8?? (better is 30...fg4 31.Rg2 gh3-+) 31.gf5–/+ Bf5 (worse is 31...gf5 32.f3 Nf6 33.Nf4=) 32.Nd3 (32.f3!?–/+) 32...Ng5-+ 33.Ndf4 (better is 33.Ng1-+) 33...Nf3 34.Rh1 Bc2 35.Rc1 Ba4 36.Bb2 g5 (36...Nd2 37.Ke1 Nb3 38.Nd5 Bd4 39.Bd4 Nc1 40.Be3 Nd3 41.Kd2 Nf2 42.Rf1 Ne4 43.Ke1 Rf1 44.Kf1-+) 37.Nd5 Bb3 38.Bc3 (38.Ne3-+) 38...Bc4 39.Ne3 Be2 (better is 39...Bb5 40.Rb1 Ba6-+) 40.Ke2 Nd4 41.Bd4 Bd4 42.Kd3 (42.Rc6 Re5 43.Rb1 Bc5-+) 42...Be3 43.fe3 Re5 44.Rhg1 Rb5 45.h4 Re5 0–1. Thiel,BP – Blume,C, 2000.

4.Bb5 c6=+

5.Bc4 b5 6.Bb3 Be6 (6...a5 7.ba5 Qa5 8.Ne2=+) 7.Be6 fe6 8.Qf3 (8.a4 ba4 9.Ne2 Nbd7=) 8...Be7 (8...a5 9.ba5 Ra6 10.Qh3=) 9.Nh3 (9.a4 ba4 10.Ra4 Qb6=) 9...0-0 10.Ng5 (10.0-0=+) 10...Qd7 ( 10...Nd5!? 11.Ne6 Rf3 12.Nd8 Rf6–/+ (12...Nb4 13.gf3 Nc2 14.Kd1 Na1 15.Ne6+/-)) 11.Qh3+= h6 (11...Na6 12.a3+=) 12.Ne6 Rf7 13.Nc3 (13.f4 Nd5+=) 13...Nd5 ( 13...Na6+=) 14.Ne4?? ( 14.Nd5 cd5 15.f4+/-) 14...Nb4–/+ 15.0-0 Nc2 (15...d5!? 16.N4c5 Bc5 17.Nc5 Qh3 18.gh3 e4–/+ (18...Nc2?! 19.Rac1 Nb4 20.a3+=)) 16.Rac1=+ Nb4 17.a3 ( 17.f4 Nd3 18.Rb1=+) 17...Nd3-+ 18.Rc2 Nb2 (18...b4 19.ab4 d5 20.N4c5 Bc5 21.Nc5 Qh3 22.gh3 Nb4 23.Rc3-+) 19.Rb2–/+ d5 20.Ng3? ( 20.N4c5 Bc5 21.Nc5 Qh3 22.gh3-+) 0–1. guest604 – guest699_jjirous, ICC, 2000.

5.Be2 e4 6.d3 ed3 7.cd3 Be7 8.Nf3 Qb6 9.a3 c5 10.0-0 cb4 11.Qa4 Nc6 12.ab4 Bd7 (12...Qb4 13.Qc2=) 13.Bc3 Nb4? ( 13...Ne5 14.Qa3 Nd5+=) 14.Qb4+– Qd8? (14...Qb4 15.Bb4 b6+–) 15.Qb7 Bc6 (15...a5 16.Nbd2+–) 16.Qa6 ( 16.Qc6 Kf8 17.Rc1+–) 16...Bd7 17.Nbd2 0-0 18.e4 d5 19.e5 Ng4 (19...Nh5 20.g3+–) 20.h3 Nf2 (20...Nh6+–) 21.Rf2 Bc5 22.d4 Bb6 23.Bb4 Re8 24.Bc5 Bc5 25.dc5 f6 (25...Qc7 26.Qd6 Rac8 27.Qd5+–) 26.ef6 Qf6 27.Qf6 (27…gf6 28.Nd4+–) 1–0. Heat – pi23, Live Game Caissa's Web, 2004.

5.Be2 Be6 6.g4 Be7-/+ 7.g5 Nfd7 (7...Nd5 8.d4 Bg5 9.de5 de5 10.c4 Nb4 11.a3 Qd1 12.Kd1-/+) 8.h4 Bg5?? (better 8...h6-/+) 9.hg5+/- d5? (9...Qg5 10.Nf3 Qe7 11.e4+/-) 10.Nf3 (10.f4 Qe7 11.Nf3 d4+-) 10...d4 (10...e4 11.Nd4 Qg5 12.Ne6 fe6 13.d3+-) 11.ed4 (better 11.Bd3 Bd5 12.Rh7 (12.Bh7?! Nf8+/-) 12...Rh7 13.Bh7+-) 11...ed4? (11...e4 12.Nh2 Qg5+-) 12.Nd4 (better 12.Bd4 f6 13.Bd3+-) 12...f6 (12...Qg5 13.Nf3 Qe7+-) 13.Ne6 fg5 (13...Qb6+-) 14.Bh5 (better 14.Ng7 Kf8 15.Bc4 Qf6+-) 14...g6 15.Kf1 (better 15.Nd8 Kd8 16.Bh8 gh5 17.Qh5 h6 18.Qh6 Kc7 19.Qg5 b6+-) 15...Qe7 (15...Qc8 16.Bg6! Ke7 17.Qe2+-) 16.Bh8 (better 16.Bg6 hg6 17.Rh8 Nf8 18.Nf8+-) 16...Qe6 17.Qe2 Qe2 (17...Qe7 18.Qe7 Ke7 19.Be2+-) 18.Be2 Ne5 (18...h5 19.Nc3+-) 19.Bg4 (better 19.Be5 h5+-) 19...Ng4 20.f3 Nf2 (20...h5 21.fg4 Na6 22.gh5 gh5 23.Rh5+-) 21.Kf2 (21.Rh7 Nd3 22.cd3 Nd7+-) 21...Nd7 (21...h5 22.Bf6+-) 22.Re1 (better 22.Rh7 0-0-0+-) 22...Kd8 (22...Kf7 23.Bd4 a5+-) 23.Bf6! Nf6 24.Nc3 Nd7 (24...Kd7+-) 25.Nd5! cd5 26.c4 (26.Rg1 Ke7 27.Rg5 Kd6+/-) 26...Kc7 (better 26...dc4 27.Re4 Rc8=) 27.cd5+- Rf8 28.Re3 (28.Rac1 Kd6 29.Re6 Kd5+-) 28...Nf6 (28...Kd6+/-) 29.Ke2 (better 29.Re7 Kb8 30.Rae1+-) 29...Nd5+= 30.Re5 Nc3?? (30...Rf5 31.Rf5 gf5 32.Rg1+=) 31.Kd3 (better 31.dc3!? Rf7+-) 31...Rf4?? (31...Kd6 32.Rg5 Rf3 33.Kc4 b5 34.Kd4 Ne2 35.Ke4+/-) 32.Kc2 (better 32.Kc3 Rf3 33.Kc4+-) 32...Rf3?? (better 32...Kd6 33.Rg5 Nd5+/-) 33.Rc5 (33.Rc5 Kb6 34.Re1+-) 1-0. KING_KEN_3 – chessovolution, Rated UltraBullet game, lichess.org, 2021.

5.Be2 Be7 =+.

5.Be2 g6 6.c4 Bg7 7.Nf3 0-0 8.0-0 Re8 9.d3 Bg4 10.e4 Bf3 11.Bf3 (< 11.gf3 Nh5–/+) 11...a5 12.a3 ab4 13.ab4 Ra1 14.Ba1 Na6 15.b5 Nc5 16.Nc3 h5 17.Na4 Na4 18.Qa4 Qd7 19.bc6 bc6 20.Bc3 Ng4 21.Bd2 Kh7 22.h3 Nf6 23.Qd1 Qb7 24.Be3 Rb8 25.Qa4 c5 26.Bg5 Nd7 27.Be7?? (27.Ra1 Nf8+=) 27...Bf8 ( 27...Nb6 28.Qc2 Qe7-+) 28.Bg5 f6 29.Be3 Bh6 30.Bh6 Kh6 31.g4 Nf8 32.gh5 gh5 33.Kh2 Ne6 34.Rg1 Nf4 35.Qd1 Qf7 36.Qd2 Qe6 37.Rg3 Rg8 38.Rg8 Qg8 39.Bh1 Qe6 40.Qe3 f5 41.Qg3 fe4 42.Be4 Qf6 43.f3 Qg5 (43...Qg5 44.h4 Qg3 45.Kg3 Kg7–/+) 0–1. OPA – PrinceMyshkin, Caissa.com, 2004.

4.c4

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

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

4…Nc6 (---> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Nc6).

4...Bg4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bg4).

4...b6

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

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

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

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

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

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

5.Nf3 Nbd7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Nbd7 5.Nf3 b6).

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

4...c6

5.Nc3 Be7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nc3 c6).

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

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

5.Nf3 g6 6.Be2 Bg7 7.0-0 0-0 8.d3 Re8 9.Nbd2 Nbd7 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3 Nbd7 8.Nbd2 Re8 9.0-0 c6).

4...Nbd7

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

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

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

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

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

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

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

4...Be6

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

5.Nf3 Be7 6.Be2 h6 7.0-0 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 h6 7.0-0 Be6).

5.Nf3 h6 6.Nc3 Nbd7 7.d4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 h6 6.d4 Nbd7 7.Nc3).

4...Be7

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

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

5.a4 0-0 6.b5 (--> 4.b5 Be7 5.a4 0-0 6.c4).

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

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

5.Nc3 0-0 6.Nf3 Bg4 7.Be2 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0 7.Nc3).

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

5.d4 0-0 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.d4).

5.Be2 0-0 6.a3 (--> 1.b4 e5 2.Bb2 Nf6 3.a3 d6 4.e3 Be7 5.c4 0-0 6.Be2).

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

5.Be2 0-0 6.Nf3 Bg4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0).

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

5.Be2 Bf5 6.Nf3 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Bf5).

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

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

5.Nf3 0-0 6.Nc3 c6 7.Be2 Nbd7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Nbd7 7.Nc3 c6).

5.Nf3 0-0 6.Nc3 Bg4 7.Be2 Nbd7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0 7.Nc3 Nbd7).

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

5.Nf3 0-0 6.Be2 Bg4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0).

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

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

5.Nf3 Be6 (---> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 Be7).

5.Nf3 Bf5 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 Be7).

5.Nf3 Bf5 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Bf5).

5.Nf3 Bg4 6.Be2 0-0 7.0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0 7.0-0).

5.Nf3 h6 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 h6).

4...Bf5

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

5.Nc3 Nbd7 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 Nbd7 6.Nc3).

5.d4 Be7 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 Be7 6.d4).

5.Nf3 Be7 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Bf5).

5.Nf3 Be7 6.Be2 Nbd7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 Nbd7 6.Be2 Be7 ).

4...g6

(--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 g6).

5.Nc3 Bg7 6.Be2 0-0 7.Nf3 Nbd7 8.0-0 Re8 9.d4 e4 10.Nd2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.0-0 e4 9.Nfd2 Re8 10.Nc3).

5.Nc3 Bg7 6.Nf3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3).

5.d3 Bg7 6.Nf3 0-0 7.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3).

5.d4 ed4 6.ed4 Bg7 7.Nf3 0-0 8.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 ed4 8.ed4).

5.Be2 Bg7

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

6.Nc3 0-0 7.Nf3 Nbd7 8.0-0 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.0-0 Nbd7 8.Nc3).

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

6.d3 0-0 7.Nf3 (-->1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3).

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

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

5.Nf3 Bg7

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

6.d3 0-0 7.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3).

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

6.d4 ed4 7.ed4 0-0 8.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 ed4 8.ed4).

6.d4 ed4 7.Qd4 0-0 8.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 ed4 8.Qd4).

6.d4 ed4 7.Nd4 0-0 8.Nc3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3 0-0 7.d4 ed4 8.Nd4).

6.d4 ed4 7.Nd4 0-0 8.Be2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 ed4 8.Nd4).

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

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

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

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

6.Be2 0-0 7.d3 Nbd7 8.0-0 Re8 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3 Re8 8.0-0 Nbd7).

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

6.Be2 e4 7.Nd4 0-0 8.Nc3 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 d6 5.e3 e5 6.Nc3 0-0 7.Be2 e4 8.Nd4).

4.Bc4 b6

5.a3 d5 6.Be2 Bd6=.

5.d4 d5 6.de5 dc4 7.Qd8 Kd8 8.ef6 Bb4 9.Bc3 Bc3 10.Nc3 gf6 11.0-0-0 Nd7 =.

5.Ne2 Bb7 6.0-0= a6 (6...d5 7.Bb3=) 7.a3 (7.f4 d5 8.fe5 Ne4+=) 7...Nc6 (7...d5 8.Bb3 Bd6 9.f4=) 8.f4 (8.d4 Qd7+=) 8...ef4 (8...Be7 9.e4=) 9.Nf4 Qe7 (9...Ne5 10.Bb3=) 10.Nc3 (10.Nd5 Nd5 11.Bd5+/-) 10...0-0-0 (better is 10...Ne5!? 11.Ncd5 Nd5 12.Nd5 Qd7+/-) 11.Ncd5+– Nd5 12.Nd5 Qh4 (12...Qg5 13.Rf7 Ne5 14.Be5 de5+–) 13.Bb3 (better is 13.Rf4!? Qg5 14.h4+–) 13...Ne5+/- 14.Be5 (14.Qe2!?+/-) 14...de5= 15.c4 (better is 15.Qf3 f6 16.e4=) 15...b5? (15...f6 16.d4=) 16.Nc3 (better is 16.Rf7 Kb8 17.Qc2 Bd5 18.cd5+–) 16...bc4= 17.Bc4?? (better is 17.Bc2 f6 18.g3=) 17...Qc4-+ 18.Rc1 Qc6 (18...Qd3 19.Rf7 Qd2 20.Rc7 Kb8 21.Rb7 Kb7 22.Qf3 Kc7 23.Nd5 Kb8 24.Rd1-+) 19.Qg4 (19.Rf2 Qg6-+) 19...Qd7 20.Qd7 (20.Qg3 f6-+ (20...Qd2?! 21.Rfd1 Qg2 22.Qg2 Rd1 23.Nd1 Bg2 24.Kg2-+)) 20...Rd7 21.Na4 (21.d4 ed4 22.ed4 f6-+) 21...Rd6 (better is 21...Rd2 22.Rf7 Rg2 23.Kf1 Bd6-+) 22.Rf7 Rc6 (22...Bc6 23.Nc5 Be8 24.Rf2-+) 23.Rcf1 Rf6 (23...Bd6 24.Nc3 Rg8 25.h3-+) 24.Nc5 (better is 24.R1f6!? gf6 25.g3–/+) 24...Rf1 25.Rf1 (25.Kf1 Bd5 26.Rf5 Bc5 27.bc5 Bc4 28.Ke1 e4-+) 25...Bc5 26.bc5 Bd5 (26...Rd8!? 27.Rf7-+) 27.Rf5 Re8 28.d4 (28.Rg5 g6-+) 28...Be4 (28...Kd7 29.Rh5 h6 30.g4-+) 29.Re5 (29.Rf7 ed4 30.ed4 Rd8-+) 29...Re5 30.de5 Kd7 31.Kf2 Ke6 32.Kg3 (32.g4 Ke5 33.Kg3 g5-+) 32...Ke5 33.h4 (33.Kh3 Kd5 34.Kg3 Kc5-+) 33...Kd5 34.c6 (34.Kf4 Bg2 35.Kg3 Bh1-+) 34...Kc6 35.Kf4 (35.Kf2 Kb5-+) 35...Bg2 36.e4 (36.Ke5 Kb5-+) 36...Kd6 (better is 36...Be4!? 37.Ke4 Kb5 38.Kd5-+) 37.Kf5 Bh3 38.Kf4 c5 39.Ke3 (39.a4 a5-+) 39...Ke5 40.Kd3 Bf1 41.Ke3 c4 42.Kd2 (42.Kf3 Bd3 43.Ke3 Be4-+) 42...Ke4 43.Kc3 (43.h5 Kf5-+) 43...Kf4 44.h5 g6 45.hg6 hg6 46.a4 a5 47.Kc2 g5 48.Kd2 g4 49.Ke1 Ke3 50.Kf1 Kd2 (better is 50...c3 51.Kg2 Kf4 52.Kf2-+) 51.Kf2 c3 52.Kg3 c2 53.Kg4 c1Q (53...c1Q 54.Kf5 Qc2 55.Ke5 Qa4-+) 0–1. Vahl,Laurens – Jacobs,Sheila, Hengelo op U12, 1997.

5.Ne2 d5 6.Bb3 =+.

5.Qf3 c6 6.b5 d5 7.bc6 e4 (7...Qc7 8.Bb3 Be6 9.Nc3=) 8.Qg3 (8.Bb5 ef3 9.c7 Bd7 A) 10.cd8B?? fg2 11.Bdf6 gh1Q (11...gh1N?! 12.Bd7 Kd7 13.Bfd4–/+) 12.Bd7 Nd7-+; B) 10.cd8N?? fg2 11.Bd7 Nbd7-+; C) 10.cd8Q Kd8 11.Bf6 gf6 12.Bf1+=) 8...Nc6+= (8...dc4?? 9.c7 Qd6 10.Be5+–) 9.Bb5 Bd7 10.Ne2?? (better is 10.Bc6 Bc6 11.Ne2+=) 10...Nh5-+ 11.Qh3 (11.Bc6 Ng3 12.Bd7 Qd7 13.hg3 Rc8-+) 11...Bh3 12.Bc6 Bd7 13.Ba8 Qa8 14.0-0 Nf6 (14...Bd6 15.f4-+) 15.Nbc3 (15.Bf6 gf6 16.Nbc3 Qc6-+) 15...Be7 16.Nd4 0-0 17.d3 Qb8 18.de4 de4 19.Rad1 Ng4 20.g3 Nf6 21.f3 ef3 22.Nf3 Bg4 23.Ne2 (23.Rd3 Re8-+) 23...Qb7 24.Ned4 Bc5 25.Rd2 (25.Rd3-+) 25...Bf3 26.Nf3 (26.Re1 Be4-+) 26...Be3 (26...Be3 27.Kg2 Bd2 28.Bf6 gf6-+) 0–1. Kumala,Aleksander – Cieplowski,Tomasz, Gdansk–chB 7th Poland, 2005.

4.Bc4 Be7

5.a3 0-0+=.

5.Ne2 0-0 6.0-0 c6 7.d4 Qc7 8.Bb3 a5 9.a3 a4 10.Ba2 Bg4 11.f3 Bh5 12.c4 c5 13.Nbc3 ed4 14.ed4 cb4 15.ab4 a3 (15...Nc6 16.Ba3+=) 16.Bc1 d5 17.c5 Nc6 18.Nf4 (better is 18.Ba3 Rfd8 19.Bb1+–) 18...Bg6?? (better is 18...Nb4 19.Nh5 Nh5=) 19.Nfd5 (19.Bd5?! Nb4 20.Ng6 hg6+/-; 19.Ng6?! hg6 20.Nb5 Qd7+/-) 19...Nd5 20.Nd5 (20.Bd5?! Nb4 21.Bc4 Rfd8+=) 20...Qd8 21.b5 (21.Ne7?! Qe7 22.Bb3 Nb4+=) 21...Nb8 22.Re1 Bf6 23.Bc4 a2 24.Ra2 Ra2 25.Ba2 Bf5 26.Nf6 Qf6 27.Bf4 Bd7 28.Be5 Qd8 29.Bc4 Qa5 30.Bd6 Rc8 31.Re7 Bb5 32.Bf7 Kh8 33.Rb7 Nc6 34.Be6 Re8 35.d5 Nd4 36.Re7 Re7 37.Be7 Qc3 38.c6 Qe3? 39.Kh1 Bc6 40.Bc5 Qe2 41.Qd4 Qf1 42.Qg1 Qg1 43.Kg1 Bd5 44.Bd5 h6 45.Bd4 Kh7 46.Be4 Kg8 47.Bg6 Kh8 48.g4 Kg8 49.h4 Kh8 50.g5 hg5 51.hg5 Kg8 52.f4 Kh8 53.f5 1–0. krols61 (1800) – brai (1825), gameknot.com, 2013.

5.Ne2 a6 6.0-0= 0-0 7.f4 (7.a3 Nc6=) 7...Nc6 (7...e4 8.a3+=) 8.a3 ef4 (8...e4 9.Nbc3=) 9.Nf4 Ne5 (9...Bg4 10.Be2 Be2 11.Qe2=) 10.Ba2 (10.Be2 Re8=) 10...b5 (10...Bg4 11.Qe1=) 11.Nc3 (11.d4 Bg4 12.Qe1 Nc6=) 11...c6 12.Qe1 (12.d4 Nc4 13.Bc4 bc4=) 12...Nfg4 (12...a5 13.d3=) 13.h3 (13.d4 Nc4 14.Bc4 bc4=) 13...Nh6 (13...Nf6 14.d4 Nc4 15.Bc4 bc4 16.d5=) 14.d3 (14.d4 Nd7=) 14...Nf5 15.Ne4 (15.d4 Nc4 16.Bc4 bc4=) 15...Qb6 16.d4 Ng6 (16...Nc4!? 17.Bc4 bc4+=) 17.Ng6+= hg6 18.Qd2 (18.g4 Nh6+=) 18...d5= 19.Nf2 (19.Nc5 Bg5 20.Rf3 Re8=) 19...Ng3 (19...Bg5 20.Nd1+=) 20.Rfe1 Bh4 (20...Bf5 21.Bb3+=) 21.Red1–/+ Bg5 (21...Re8 22.Bb3–/+) 22.Re1+= Qd8 (22...Re8!?+=) 23.Qc3= Bh4 (23...Qe8!?=) 24.Qc6+= Be6 25.Nd3 Rc8 (25...Ne4 26.Re2+=) 26.Qa6 Rc2 27.Bb1?? (better is 27.Bb3 Ne2 28.Kh1+=) 27...Ne2-+ 28.Kh1 Rb2 (28...Rd2 29.Re2 Re2 30.Ba2-+ (30.Qb5 Qg5 31.Nf2 Re1 32.Qf1 Rf1 33.Kh2 Bg3)) 29.Nb2 Be1 30.Bg6?? (30.Qb5 Ng3 31.Kg1-+) 30...Bc3 (30...Qh4 31.Bf7 Kf7 32.Nc4 Bh3 33.Ne5 Kg8 34.Qf6 Rf6 35.Nf3 Qf2 36.Re1 Qg2) 31.Rb1 (31.Bd3 Ng3 32.Kh2 Qc7-+) 31...Qg5 (31...fg6?! 32.Qe6 Rf7 33.Qg4 Bb2 34.Qe2 Ba3 35.Qd3–/+) 32.Bd3 (32.Bf7 Bf7 33.Qb5 Qe3 34.Nd3 Bd4 35.Qa6-+) 32...Bf5 (32...Bh3 33.g3 Bg2 34.Kg2 Qg3 35.Kh1 Qh3) 33.Qb5-+ Ng3 34.Kh2 Ne4 (34...Qe3 35.Bf5 Qf4 36.Bh7 Kh7 37.Qd3 Ne4 38.Kg1 Qf2 39.Kh2 Bb2 40.Rf1 Qd4 41.Qd4 Bd4 42.Rf5-+) 35.Qd5 (35.Nd1 Qg3 36.Kh1-+) 35...Qg3 36.Kg1 (36.Kh1 Nf2 37.Kg1 Nh3 38.Kh1 Nf2 39.Kg1 Qe3-+) 36...Qe3 37.Kh1 (37.Kh2 Qf4 38.Kg1 Ng3 39.Bf5 Bd4 40.Qd4 Qd4 41.Kh2 Nf5-+) 37...Nf2 (better is 37...Bd4 38.Qd4 Qd4-+) 38.Kh2 Bd3 39.Nd3 Qd3 40.Rb3 Qd4 (40...Ne4 41.Qe5-+) 41.Qf3 (41.Qd4 Bd4 42.Kg3-+) 41...Qe5 42.Kg1 (42.g3 Ne4 43.Qd3-+) 42...Qe1 (42...Qe1 43.Kh2 Ne4 44.Rc3 Nc3-+) 0–1. Tome,Daniel – Leite,Catarina (2085), POR–ch U18 Olival Basto, 2000.

5.Ne2 c6 6.Bb3 a5 7.a3 0-0 8.f4 Bg4 9.fe5= de5 10.Be5 ab4 11.ab4 Ra1 12.Ba1 Bb4 13.0-0 Nbd7 14.Qe1 Be2 15.Qe2 Qe7 16.Nc3 Bd6 17.Rf5 Nc5 18.Ba2 Nce4 19.Ne4 Ne4 20.Qg4 g6 21.d3 Nc5?? (21...Nf6 22.Rf6 (22.Bf6 Qe3 23.Rf2 Bh2 24.Kh2 Qf2+=) 22...Qe3 23.Rf2 Bh2 24.Kh2 Qf2 25.Qg5+/-) 22.e4 (better 22.Qd4 Be5 23.Re5+-) 22...Ne6 23.Bf6 Qc7 24.h4 (24.Kh1 Ng7 (24...Bh2? 25.e5+-) 25.Bg7 Kg7= (25...gf5?? 26.ef5 h5 27.Qg6 Re8 28.Bf6 Kf8 29.Qg7)) 24...Qb6 25.Kh1 Ra8 (25...Ng7!? 26.Rf1 Nh5=+) 26.Bb3+= Qe3 27.Rf1 Qg3 (27...h5 28.Qf3 Qf3 29.Rf3+=) 28.Qg3+/- Bg3 29.h5 (29.Rf3!? Bd6 30.g4+/-) 29...gh5= 30.Rf5 h4 31.Rh5 Nf4 (31...b5 32.Kg1=) 32.Rg5+= Ng6 33.Kg1 Kf8 (33...Ra7 34.Rf5 b6 35.Bb2=) 34.Kf1 (34.Rf5 Ne7 35.Rh5 Kg8+=) 34...h6 (34...b6!?=) 35.Rf5+/- Ke8 (35...b5 36.Bd4 Rd8 37.Rf7 Ke8 38.Be3+/-) 36.Bb2 Ke7? (better 36...Kd7+/-) 37.Rf7+- Kd6 (37...Ke8 38.Rb7 Ne5 39.Rh7+-) 38.Rb7 (better 38.Rf6 Kc7 39.Rg6 Rf8 40.Kg1+-) 38...Rf8 39.Ke2 Rf2 (39...Nf4 40.Kd1 c5 41.Ba4+-) 40.Ke3 Rg2 41.Ba3 Ke5 42.d4 (better 42.Rf7 Bf4 43.Rf4 Nf4 44.Bb2 Kd6 45.Kf4=+) 42...Kf6+= 43.Rf7 Kg5 44.Rf5 (44.Rf5 Kg4 45.Be6+=). FeegLood (2560) - Boterhoofd (2310), lichess.org, Time forfeit, 2015.

5.Ne2 Nc6 6.a3= 0-0 7.b5 (7.0-0 a6=) 7...Na5+= 8.Ba2 b6 (8...c6 9.bc6 bc6 10.Nbc3+=) 9.d3 (9.d4 e4+=) 9...Bg4 (9...Bd7 10.Nbc3+=) 10.Nbc3 (10.0-0 a6 11.f3 Bd7=) 10...Qd7 (10...c6 11.f3 Bc8 12.bc6 Nc6 13.e4=) 11.f3= Be6 12.a4 (12.0-0 a6 13.a4 d5=) 12...a6 (12...d5 13.0-0=) 13.e4 (13.f4 d5=) 13...Ba2+= 14.Ra2 Nb7 (14...ab5 15.ab5 d5 16.f4 ef4 17.Nf4+=) 15.Qa1 a5 (15...Ra7 16.0-0=) 16.0-0+= Rae8 17.f4 ef4 (17...Nc5 18.Qe1+=) 18.Nf4 Nc5 (18...Bd8 19.h3+=) 19.Ra3 (19.Ncd5 Nd5 20.Nd5 Ne6+/-) 19...Ne6 (19...Bd8 20.Qa2+=) 20.Ncd5 (20.Nfd5!? Nd5 21.Nd5+/- (21.ed5?! Nd4 22.Rf2 Bh4+=)) 20...Nd5 21.Nd5 (21.ed5?! Nf4 22.Rf4 f5=) 21...f6 (21...Bg5 22.Rf5 Qd8 23.Qd1+/-) 22.d4 (22.Rf5 Kh8+/-) 22...Bd8 23.Rg3 (23.Bc1 Ng5 24.Qa2 Kh8 25.Bg5 fg5+/-) 23...Rf7 (23...Ng5 24.Qa2 Rf7 25.Nc3 Ne4 26.Ne4 Re4 27.Qb3+=) 24.Ne3 (24.Re3 c6 25.bc6 Qc6+=) 24...Nf8 (24...Ng5!? 25.e5 Ne4=) 25.Nf5+/- Ng6 26.Rg4 (26.Qe1 d5 27.Re3 Re4 28.Re4 de4 29.Qe4 Ne7+=) 26...d5+= 27.Qe1 Qe6 (better is 27...Be7!?+=) 28.h4+– Rd7 (28...Kh8 29.Qg3 de4+–) 29.h5 Nf8 (29...Ne7 30.Rg7 Kh8 31.Qd2+–) 30.Qg3 (30.c4 c6 (30...de4 31.d5 Rd5 32.cd5+–) 31.bc6 Qc6 32.ed5 Re1 33.dc6 Rf1 34.Kf1 Rc7+–) 30...g6 (30...g5 31.hg6 hg6 32.Rg6 Ng6 33.Qg6 Kh8+–) 31.Bc1 (31.c4 c6 (31...de4?? 32.d5 Rd5 33.hg6+–) 32.hg6 hg6 33.bc6 Rh7 34.cd5 Qf7+–) 31...de4? (better is 31...Kh8+/-) 32.Rff4?? (better is 32.hg6 Ng6 33.Rg6 hg6 34.d5 Qf5 35.Rf5+–) 32...g5 (32...Kf7 33.Nh6 Kg7 34.hg6 (worse is 34.Re4 Qe4 35.Re4 Re4=) 34...hg6 35.Ba3+/-) 33.Nh6 (33.Re4 Qe4 34.Re4 Re4 35.Qb3 Kh8+–) 33...Kg7 (better is 33...Kh8 34.Re4 Qe4 35.Re4 Re4+/-) 34.Rf5?? (34.Re4 Qe4 35.Re4 Re4 36.Nf5 Kg8 37.Qb3 Kh8 38.Ba3+–) 34...Kh6-+ 35.Rfg5 fg5 36.Bg5 (36.Rg5 e3 37.Re5 Qe5 38.de5 Rd1 39.Kh2 Rc1 40.Qe3 Bg5 41.Qe4-+) 36...Kg7 (better is 36...Bg5 37.Rg5 Qd6 (37...Rd4 38.Qe3 Rd1 39.Kh2 Qh3 40.Kh3 Rh1 41.Kg4 Rh4 42.Kh4 c6 43.Rg8) 38.Qd6 Rd6-+) 37.Bf6?? (37.Bf6 Kf6 38.c4 Qg4 39.Qg4 Rd4 40.Qf4 Kg7 41.h6 Kg8 42.Qg4 Ng6 43.Kh2-+; 37.Bd8 Ng6 38.Bc7 Rd4 39.hg6 hg6 40.Rh4-+). Ben Zur,Raanan – McCrea,James, Cal Chess Labor Day Festival, 1993.

5.Ne2 d5 6.Bb3 a5 7.a3+= (7.Be5? a4-+).

5.Ne2 Be6 6.Be6= fe6 7.0-0 0-0 (7...Qd7 8.f4=) 8.d3 (8.f4 e4=) 8...Qd7 (8...d5 9.Be5 Bb4 10.Nf4=) 9.a3 (9.c4 d5=) 9...Nc6 (9...a5 10.c4=) 10.c4 a6 (10...e4 11.de4 Ne4 12.Nd2 Nd2 13.Qd2=) 11.Nd2 b5 (11...Qe8 12.d4=) 12.Ng3 (12.Qc2 Nd8=) 12...d5 (12...bc4 13.Nc4 Rfb8 14.Qd2+=) 13.Qe2 (13.Rc1 Bd6+=) 13...Rab8 (13...Rad8 14.Rad1=) 14.cb5 (14.Rac1 bc4 15.dc4 a5=) 14...ab5 15.Rac1 Bd6 16.Nb3 Nd8 (16...Ne7 17.Nc5 Bc5 18.Rc5=) 17.Nc5 (17.e4 d4=) 17...Qe7 18.Rc2 (18.e4 d4=) 18...Nb7 19.d4 (19.Rfc1=) 19...Bc5 (better is 19...ed4!? 20.Na6 Rbc8 21.Qb5 c6 22.Rc6 de3 23.Bf6 gf6=) 20.dc5+= (worse is 20.bc5 c6=) 20...c6 21.Be5 Ra8 22.Qd3 (22.e4 Ra3 23.Bd6 Nd6 24.cd6 Qe8+= (24...Qd6? 25.e5 Qd7 26.ef6+–)) 22...Nd7 (22...Ng4!? 23.Bb2 Qh4+=) 23.Bb2+/- Nd8 (23...Qg5 24.e4+/-) 24.Re2 (24.e4 Qg5+/-) 24...Nf7 (24...e5 25.Rd2+/-) 25.e4+– Nfe5 (better is 25...Nf6+–) 26.Be5?? (26.Qd4 Qf6 27.ed5 ed5 28.Qd1+/-) 26...Ne5+= 27.Qd4 (27.Qc3 Nc4 28.ed5 cd5+=) 27...Qf6= 28.Qb2 (28.Qa1 Nc4=) 28...Nc4 29.Qf6 Rf6 30.Nh5 (30.Ra1 d4= (30...Na3? 31.Rea2+–)) 30...Rh6 31.ed5 (31.Ng3 Ra3 (worse is 31...Na3 32.Ra1 Ra4 33.Rea2+/-) 32.ed5 cd5+=) 31...ed5 (31...Rh5 32.dc6 Kf7 33.Ra1+=) 32.Nf4 Ra3 33.Ne6 (better is 33.Re7=) 33...Nd2?? (33...Rf6 34.Ng5+=) 34.Rfe1 (better is 34.Ng5!? Ne4 35.Ne4 de4 36.Re4+/-) 34...Ne4= 35.Nd8 Ra8 36.Nb7 Ra7 (better is 36...Rf6=) 37.Na5 (better is 37.f3 Rb7 38.fe4 de4 39.Re4+=) 37...Nc5–/+ 38.bc5 Ra5 39.Re8 Kf7 40.R8e7 Kf6 41.R7e6 Kf5?? (41...Kf7 42.Re7 Kg6 43.R7e6 Kf7 44.Re7=) 42.R6e5?? (better is 42.R1e5 Kf4 43.g3 Kf3 44.Rf5 Kg4 45.Rf4 Kh5 46.Re5 Kg6 47.h4 Rh4 48.gh4+–) 42...Kf4 (42...Kf6!? 43.Re6 Kf7 44.Re7 Kg6=) 43.g3 (43.h3 Ra3 44.g3 Rg3 45.fg3 Kg3 46.Re6 Re6 47.Re6+–) 43...Kg4+= 44.Kg2 Threatening mate: f3 44...Ra2 45.Rd1 (better is 45.Rb1 Rh2 46.Kh2 Rf2 47.Kg1+=) 45...g5?? (better is 45...Rh2! 46.Kh2 Rf2 47.Kg1 Rc2+/-) 46.Rd4+– Kh5 47.Rh4 Kg6 48.Re6 Kf5 (48...Kg7 49.Rhh6 Ra6+–) 49.Rhh6 g4 (49...Ra4 50.Rhf6 Kg4 51.h3 Kh5 52.Rh6) 50.Rhf6 (50.h4 gh3 51.Kh3 Rf2 52.g4 Kf4 53.Rhf6 Kg5 54.Rf2 h5 55.Rf5) 50...Kg5 51.h4 gh3 52.Kh3 Ra3 (52...Ra4 53.f4 Rf4 54.gf4 Kh5 55.Rh6) 53.f4 1–0. Vahl,Laurens – Bensdorp,Laura, NED U14 op Hengelo, 1999.

5.Qf3? 0-0 6.Bd3 (6.Nc3 Nc6 7.a3 Bg4–/+) 6...Re8 (6...Nc6 7.a3-+) 7.Nh3 e4 (better is 7...Nc6!? 8.b5 Nb4-+) 8.Be4–/+ Ne4 9.Qe4 Bf6?? (better is 9...Nc6 10.b5 Bh4+=) 10.Bf6+/- gf6 (10...Re4? 11.Bd8 Na6 12.Nf4+–) 11.Nf4?? (better is 11.Qf4+/-) 11...Re4-+ 12.Nc3 (12.a3 Rc4-+) 12...Rb4 13.Ncd5 Rf4! 14.Nf4 (14.Nf4 a5 Combination; 14.ef4 Nc6 Combination) 14...Bf5 15.c3 Nc6 16.Nd5 (16.d3 d5-+) 16...Be4 17.Nf4 Ne5 18.f3 (18.0-0 d5-+) 18...Nd3 19.Ke2 (19.Nd3 Bd3 20.Kf2 Qd7-+) 19...Nf4 20.Kf2 (20.ef4 Bd5 21.Kf2 Qd7-+) 20...Nd3 21.Kg3 Bg6 (21...Bc6 22.h4-+) 22.Rab1 b6 23.Rb3 Qe7 (better is 23...f5 24.f4 Nc5-+) 24.e4 Qe5 25.Kh4 h5 (25...Qg5 26.Kh3 Nf4) 26.g4 (26.g3 Be4! 27.Re1 Qg5 28.Kh3 Nf4 29.gf4 Bf5) 26...Qg5 27.Kh3 (27.Kg3 h4 28.Kg2 Qd2 29.Kh3 Nf4 30.Kh4 Qf2) 27...Nf2 (27...h4 28.Kg2 Qd2 29.Kh3 Nf4 30.Kh4 Qf2) 28.Kg2-+ Nh1 (28...Qd2 29.Rb2 Qb2 30.Rb1 Qe2 31.Re1 Qe1 32.a3 Nd3 33.h3 Nf4 34.Kh2 Qf2 35.Kh1 Qg2) 29.Kh1 hg4 30.c4 (30.Kg2 gf3 31.Kf2 Qd2 32.Kg3 Qg2 33.Kf4 Re8 34.Rb4 f2 35.Ke3 f1Q 36.Rb6 Re4) 30...gf3 31.h3 (31.Rf3 Be4 32.h3 Bf3 33.Kh2 Qg2) 31...Qg2 0–1. Reichelt,Ben (1890) – Staats,Carsten (2315), remoteschach.de, 2002.

5.Qf3 e4 6.Qg3 Nh5 7.Bf7 Kf7 8.Qh3 Bh3 9.Nh3 -+.

5.f4 Nc6 6.a3 Bg4 7.Ne2 Ne4 (7...ef4 8.ef4 d5 9.Bd3=+) 8.0-0 0-0 (8...Bf6 9.Nbc3 Nc3 10.Bc3=) 9.h3 (9.Bd5 Nf6 10.Bc6 bc6 11.fe5 Nd7+/-) 9...Be6 ( 9...Be2!? 10.Be2 Ng3=) 10.Be6+/- fe6 11.b5 Na5 12.d3 (12.fe5?! Nc4 13.Bc3 de5 14.Rf8 Bf8=+) 12...Nc5 13.fe5 de5 14.Be5 Bf6 15.Bf6 Rf6 16.Nd2 Qe7 17.d4 Nd7 18.c4 Raf8 19.Qa4 b6 20.c5 e5 21.c6 Rf1 22.Rf1 Nf6 23.Qb4 Qe6 24.Ne4 Rd8 25.de5 Qe5 26.Nf6 gf6 27.Rf3 Rd1 28.Kf2 Rd5 29.Qg4 Kf7 30.e4 Rc5?? (30...Rd2 31.Qh4 Qd4 32.Re3 Nc4 33.Qh7 Kf8 34.Qh6 Ke7+=) 31.Rd3 Qg5 32.Qd7 Kg6 33.Rg3 Qg3 34.Kg3 Nc4 35.Nf4 Kh6 36.Ne6 (36…Rg5 37.Ng5 fg5 38.Qd4+–) 1–0. Martinez,Jairo – Aparicio,Oscar, Cartagena op, 2000.

5.Bf7 Kf7 6.Nf3 Rf8 7.d4 (7.d3 Kg8-+) 7...e4 8.Ng5 Kg8 9.d5 Be6 (better 9...h6 10.Nh3 a5-+) 10.de6?? (10.Ne6 Qc8 11.Nf8 Qf8+-) 10...Ng4?? (better 10...Qe8 11.h4 a5 12.ba5 Qg6=) 11.Qe2?? (11.Nf7 Nf2 12.Kf2 (12.Nd8 Nd1 13.Kd1 Bd8=+) 12...Bh4 13.Kg1+-) 11...Bf6 (11...Nf2 12.Nf7 Qc8 13.Nh6 gh6 14.Rf1-/+) 12.Bd4 (better 12.Bf6!? Nf6 13.Qb5+=) 12...Bd4=+ 13.e7?? (13.Nf7 Qh4 14.g3-/+) 13...Qe7-+ 14.Rf1 0-1. blitzbullet (2570) - allyouneedisluft (2680), Rated Crazyhouse game, lichess.org, 2018.

5.h3 0-0 6.Ne2 (6.a3 a5+=) 6...d5–/+ Black gets the initiative 7.Bb3 e4 (7...Nbd7 8.Nbc3–/+) 8.b5 (8.0-0 Bb4 9.a3 Bd6–/+) 8...a6 9.Nd4 (9.ba6 Ra6 10.0-0 c5+=) 9...ab5–/+ 10.Nb5 c6 11.N5a3 (11.N5c3 b5–/+) 11...b5 (11...Nbd7 12.0-0-+) 12.c3 Nbd7 (12...Na6 13.d4-+) 13.d4 ed3 14.Qd3 Nc5 15.Qd4 (15.Qd1 Bd6-+) 15...Bf5 (better is 15...Nfe4-+) 16.0-0? (better is 16.Bc2 Nfe4 17.Qd1-+) 16...Nd3 Black prepares b4 17.c4 (17.Bc2 Nb2 18.Bf5 Ba3 (18...Ra3?! 19.Na3 Ba3 20.Rab1-+) 19.Na3 Ra3-+) 17...Bc5 (worse is 17...Nb2 18.Qb2 dc4 19.Bc2-+) 18.Qc3 b4 (18...bc4?! 19.Nc4 dc4 20.Bc4 Nb2 21.Qb2-+; 18...dc4?! 19.Nc4 bc4 20.Bc4 Nb2 21.Qb2-+; 18...Nb2?! 19.Qb2 dc4 20.Bc2-+) 19.Qc2 ba3 (19...d4 20.Bc1-+) 20.Bd4 Bg6 (better is 20...Bd4 21.ed4 Re8-+) 21.Nc3 (21.Bc5 Nc5 22.Qc1-+) 21...dc4 (21...Bd4!? 22.ed4 dc4 23.Bc4-+) 22.Bf6 (22.Bc4 Bd4 23.Bd3 Bc3-+) 22...Qf6 (22...cb3 23.Bd8 bc2 24.Bc7-+) 23.Bc4 Nb2 (23...Nb4 24.Qc1 Nc2 25.Ne2 Na1 26.Qa1 Qa1 27.Ra1-+) 24.Ne4 Qe5 25.Bd3 (25.f3 Be4 26.fe4 Ra4-+) 25...Nd3 26.Nc5 Nc5 27.f4 (27.Qd2 Rfb8-+) 27...Qe3 (27...Qa1! 28.Qc5 (28.Ra1?? Bc2 29.Rc1 Bb3 30.Rc5 Ba2-+) 28...Bb1 29.Qb6-+) 28.Qf2 Qf2 29.Rf2 f6 (29...Nd3 30.Rc2-+) 30.f5 Bf7 31.Rc2 Ra5 32.Rb1 Ne4 (32...Bd5 33.Rbc1 Nd3 34.Rb1-+) 33.Kh2 (33.Rb6 Bd5-+) 33...Rf5 (33...Ba2 34.Ra2 Nc3 35.Rba1 Na2 36.Ra2-+) 34.Re1 (34.Rb6 c5 35.Ra6 c4-+) 34...Bd5 35.Re3 Ra8 (better is 35...Rb8 36.Ra3 Rf1 37.Re3-+) 36.h4 (36.Kg1 Rb8 37.Rce2 Rb2 38.Re4 Be4 39.Re4 Rff2-+) 36...Kf7 (better is 36...Rf2!? 37.Rf2 Nf2 38.Re2-+) 37.Rce2 Rf2 (better is 37...Ra4 38.Kg1-+) 38.Kg1 (38.Re4 Rg2! 39.Rg2 Be4 40.Re2-+) 38...Re2 39.Re2 Rb8 (better is 39...Nc3 40.Re1-+) 40.Re3 Rb1 41.Kh2 Rb2 42.Ra3 Ra2 43.Re3 Nd6 44.Rg3 Rg2 (better is 44...Nf5 45.Rd3-+) 45.Rg2 Bg2 46.Kg2 Ke6 (46...Kg6 47.Kf3-+) 47.Kf3 h5 48.Kf4 Kd5 49.Kf3 Kd4 50.Ke2 g5 51.hg5 fg5 52.Kf2 Kd3 53.Kg3 (53.Kg1 c5 54.Kg2 c4 55.Kf1 c3 56.Kg1 g4 57.Kh1 c2 58.Kg1 c1Q 59.Kg2 Qd2 60.Kh1 g3 61.Kg1 Qf2 62.Kh1 Qf1) 53...c5 (53...Nf5 54.Kf2 c5 55.Kg2 Ne3 56.Kg3 c4 57.Kh3 c3 58.Kg3 h4 59.Kf2 c2 60.Kg1 c1Q 61.Kh2 Qd2 62.Kh1 Qg2) 54.Kf2 Nf5 55.Kf3 (55.Kf1 Ne3 56.Kf2 c4 57.Kg3 h4 58.Kh3 c3 59.Kh2 c2 60.Kh3 c1Q 61.Kh2 Qd2 62.Kh1 Qg2) 55...c4 56.Kf2 c3 57.Kf3 (57.Kf1 Ne3 58.Kf2 c2 59.Kg3 c1Q 60.Kh2 Qd2 61.Kg1 Qg2) 57...c2 58.Kf2 (58.Kg2 Ne3 59.Kg3 c1Q 60.Kh2 Qd2 61.Kg1 Qg2) 58...g4 (58...c1Q 59.Kg2 Ne3 60.Kh2 Qd2 61.Kg1 Qg2) 59.Kg2 Ke2 60.Kh2 Kf3 Black intends g3 61.Kg1 g3 62.Kh1 (62.Kf1 c1Q) 62...c1Q 0–1. Moreau,Lionel – Devecchi,Jorge (1670), Besancon FRA Open Championship, 2006.

5.Ne2 Nbd7

6.Bb3 0-0 7.0-0 d5 8.a3 Re8 9.d3 (9.d4 Bd6+=) 9...Bd6 (9...a5 10.d4 e4 11.Nbc3–/+) 10.Nd2 (10.c4 e4 11.de4 dc4 12.Bc4 Ne4=) 10...Nf8 (10...a5!?+=) 11.c4= c6 12.Ng3 (12.cd5 cd5 13.Nc3 Be6=) 12...Bg4= 13.f3 Be6 14.Rc1 (14.d4 N8d7=) 14...Ng6+= 15.Bc2 (15.Re1 h5+=) 15...b6 (15...a5 16.c5 Bc7 17.d4+=) 16.Bb1 (16.cd5 Nd5 17.Nc4 Bc7+=) 16...Qe7 (16...d4!? 17.Qe2 a5–/+) 17.d4 ed4 18.ed4 (18.Bd4 a5 19.ba5 Ra5 20.cd5 Rd5 21.Rc6 Qd7=) 18...c5 (18...Qc7!?–/+) 19.Re1 (19.dc5 Bf4 20.cd5 Nd5 21.Re1=) 19...Qd8 (better is 19...Bg3!? 20.hg3 cb4+=) 20.cd5+= Nd5 21.dc5 bc5 22.bc5 Bg3 (22...Bf4!? 23.Nc4 Qg5+/-) 23.hg3+/- Qb8 24.Bd4 Qg3 25.Ne4 Qh4 26.g3 Qh5 (26...Qe7 27.f4 Red8 28.Qh5 Ndf4 29.gf4+–) 27.Rc2 Ne5 28.Rf2 (better is 28.Be5 Qe5 29.f4+/-) 28...Reb8? (better is 28...Bd7!?+/-) 29.Be5 (better is 29.g4!? Ng4 30.fg4 Bg4+–) 29...Qe5 30.f4 Qf5 (30...Qa1 31.Ng5 g6 32.Bg6 Qd1 33.Bh7 (33.Rd1? hg6 34.Rfd2 Nc7-+) 33...Kg7 34.Rd1+–) 31.Ng5 Nc3?? (31...Rb1 32.Qb1 Qb1 33.Rb1 Bf5+–) 32.Bf5 Nd1 33.Bh7 (33.Rd1?! Bf5 34.Rfd2 f6=) 33...Kh8 (33...Kf8 34.Ne6 fe6 35.Rd1+–) 34.Rd1 Bg4 35.Re1 f6 (35...Re8 36.Be4 Kg8 37.Rff1+–) 36.Rh2 (better is 36.Be4 g6 37.Rh2 Bh5+–) 36...fg5 (36...g6 37.Bg6 Kg7+–) 37.Be4 1–0. Jaramillo,Carlos Orlando (1940) – Dorado,Eyder Alexander, 10th OPEN FERIA DE CALI Grupo B E, 2008.

6.f4+=.

5.Nf3 0-0

6.0-0 Be6 7.Be6= fe6 8.Nc3 h6 9.h3 Nbd7 10.a4 c6 11.Ne2 e4 12.Nfd4+/- e5 13.Ne6 Qe8 14.Nf8 Nf8 15.Ng3 Qg6 16.d4 ed4+/- 17.Bd4 Ne6 18.c3 d5 19.a5 h5 20.Bf6 Bf6 21.Rc1 h4 22.Ne2 Ng5 23.Nf4 Qe8 24.Qg4 b6 25.Nh5 Nh7 26.Nf6 Nf6 27.Qh4 ba5 28.ba5 Qd8 29.Ra1 Rb8 30.a6 c5 31.Qf4 Rb3 32.Qe5 Qb6 33.Rfd1 Kh7 34.Qf5 Kh8 35.Qe5 Rb2?? 36.g4+– d4 37.g5 Ng8 38.h4 de3 39.fe3 c4 40.Qf4 Qb3 41.Rac1 Qb6 42.Qe4 Re2 43.Qd4 Qc6 44.Qd5 Qc8?? 45.Qf3+– Ra2 46.Rd4 Qb8 47.Rf4 Qb2 48.Qh5 Nh6 49.Rf8 Kh7 50.g6 1–0. Steve20 – khani9, ChessWorld.net, 2007.

6.a3 Bf5 7.0-0= Nbd7 8.Ng5 Bg6 9.d4= e4 10.Nd2 d5 11.Be2 h6 12.Nh3 Bd6 13.c4= c6 14.Rc1 Qe7 15.Nf4 Bf4=+ 16.ef4 Rac8 17.Qb3 Rfe8 18.Rfe1 Qd6 19.Qe3 Bf5 20.h3 h5 21.c5+/- Qe6 22.f3 Nf8 23.Rcd1 h4= 24.fe4 Ne4 25.Ne4 Be4 26.Bg4 f5 27.Bh5 g6 28.Be2 Nh7 29.b5 Nf6? 30.Qf2+– Re7 31.Qh4 Rh7 32.Qg5 Rg7 33.g4?? Nh7 34.Qh4+= Qf6 35.g5+– Qe7 36.a4 Nf8+/- 37.Qg3 Ne6 38.h4 Qc7 39.Rf1+= Rh7 40.Rf2 Ng7 41.Rdf1 Nh5 42.Qh2 Kf7 43.bc6 bc6= 44.Bh5 gh5 ½–½. Wall,Bill – Nadan, chess.com, 2010.

6.Ng5 Bf5 7.e4 Ne4 8.Ne4 Be4 9.0-0 Nd7 10.f4 Bf6 11.Qg4 Bc2 12.Rf3? Qe7 13.Na3 Be4 14.Rg3 Bg6?? 15.f5=+ Bh4 16.fg6+/- Bg3 17.Qg3 h6?? 18.Nb5 Qg5?? 19.gf7+– Kh8 20.Qd3 Nf6? 21.Nc7+– Rac8 22.Ne6 (22.Ne6 Qg4 23.Nf8 Rf8 24.Qd6+–) 1–0. Wall,Bill – Holsapple,Boyd, Dayton, OH, 1982.

5.Nf3 d5

6.Be2 Bb4?! 7.Ne5 0-0 8.0-0 =.

6.Be2 e4 –/+.

4.d3 a6

5.c4 b6 6.Nf3 Be7 7.Nc3 d5 (7...0-0!?=) 8.Ne5+= Bb4 (8...dc4 9.a3 cd3 10.Bd3+=) 9.Be2 (9.Qa4 Nbd7+/-) 9...Qd6 10.Nf3 (10.0-0 Qe5 11.Qa4 Bd7 12.Qb4 Nc6+=) 10...Nc6 (10...dc4 11.dc4 Qd1 12.Rd1=) 11.0-0 (better is 11.a3 Bc3 12.Bc3 dc4 13.dc4+=) 11...d4 (11...0-0=) 12.Ne4?? (better is 12.ed4 0-0 13.Ne4 Ne4 14.de4+/-) 12...Ne4+= 13.de4 Bc5?? (better is 13...de3 14.fe3 0-0+=) 14.ed4+– (14.Nd4?! 0-0+/-) 14...Ba3 (14...Bb4 15.a3 Ba5+–) 15.Ba3 (better is 15.c5 Bc5 16.dc5 bc5 17.Bg7+–) 15...Qa3 16.Qb3 Qb3 17.ab3 0-0 18.d5 Nb4 19.Rfc1 Re8 20.e5 (20.Nd2 Kf8+–) 20...f6 (20...Bg4 21.Rd1+/-) 21.e6 Bb7 (21...c6 22.Rd1+/-) 22.Nd4 (22.Nd2 c6 23.Bh5 cd5 24.Bf7 Kf8 25.Be8 Re8 26.cd5 Bd5+=) 22...Rac8 (22...c6!? 23.Ra4 a5 24.Rb4 ab4 25.dc6 Bc8+–) 23.Nc2 (23.Bh5 g6 24.Bf3 Rcd8+–) 23...Nd5 (23...Nc2 24.Rc2 c6 25.d6 Re6 26.c5+–) 24.cd5 Bd5 25.Ba6 Rcd8 26.Nd4 (better is 26.Ne3 Bb3 27.Rc7 Be6 28.Rb7+–) 26...Be6?? (26...c5 27.Nb5 Bb3+–) 27.Ne6 Re6 (27...Rd6 28.Nc7 Red8 29.Ne6+–) 28.Bc4 (28.Bc4 Kf7 29.Re1+–) 1–0. Rush,Bradley – Cherry,Brian, RN–2012–0-00490, 2012.

5.Nf3 Nc6

6.a3 Be6 7.Nc3 Be7 8.Be2 0-0 9.0-0 d5 10.Qd2 d4 11.Na4 h6.

6.a3 Be7 7.Be2 (7.d4 e4 8.d5 Nb8= (8...ef3 9.dc6 bc6 10.Qf3 0-0 11.Nd2 d5) 9.Nd4 0-0 10.Nd2 c5 11.dc6 Nc6) 7...0-0 8.c4 (8.Nc3 d5 9.0-0 d4 10.Na4 b5 11.Nc5 Bc5) 8...b5 (8...Re8 9.0-0= Be6 10.Nc3 h6 11.d4 ed4; 8...e4 9.de4 Ne4 10.Nbd2 Bf6 11.Qc2 Bf5) 9.Nc3 (9.cb5 ab5 10.d4 (10.Nc3 Qd7 11.d4 ed4) 10...ed4 11.Bb5 (11.ed4 Nd5) 11...Na7 12.Nd4 Nb5 13.Nb5 Bb7+=) 9...Rb8 (9...bc4 10.dc4 Re8 (10...Bf5 11.0-0 h6) 11.0-0= Bf5) 10.Nd5 (10.cb5 ab5 11.d4 ed4 12.ed4 Na7+=; 10.0-0 Be6 11.cb5 ab5) 10...Bd7 (10...Be6 11.Qc2 (11.Rc1 bc4) 11...bc4 12.dc4=) 11.0-0+= Be6 (11...h6=) 12.e4 (12.Qc2 Qd7 (12...Nd5? 13.cd5 Bd5 14.e4+–) 13.d4 Bd5 14.cd5 Nd5+=) 12...bc4= 13.dc4 (13.Nf6!? Bf6 14.dc4=) 13...Ne4+= 14.Qa4 Na7 (better is 14...Bd7!? 15.Qc2 Ng5+=) 15.Qa6+= Ra8 (15...c6 16.Rfd1+=) 16.Qb7+/- (worse is 16.Ne7 Qe7 17.Bd3 Nf6=) 16...Bd5 17.Qd5 (17.cd5 Bg5+/-) 17...Nf6+= 18.Qd1 Qd7 19.Qc2 Rab8 (19...Rfb8 20.Rfd1 e4 21.Nd2+/-) 20.Rad1 Qe6 (better is 20...Qc6!?+/-) 21.Ng5+– Qc8 22.f4 h6 23.fe5 de5 24.Ne4 (24.Rf6 hg5 25.Rf2 Bf6+–) 24...Ne4 (24...Qe6!?+/-) 25.Qe4+– Qb7 (25...Bf6 26.Bd3 (26.Be5 Re8 27.Rf5 Qe6+=) 26...Rd8 27.Be5 Be5 28.Qe5+–) 26.Qe5 Bf6 (26...f6 27.Qe6 Kh8+–) 27.Rf6 Rfe8 (27...Rbe8 28.Re6! f6+–) 28.Re6! f6 (28...Re6 29.Qg7; 28...fe6 29.Qg7) 29.Re8 Re8 30.Qe8 Kh7 31.Bd3 Qe4 32.Be4 f5 33.Bf5 g6 34.Qg6 1–0. Torres Herrero,Fernando – Martin del Campo,Jorge, Valladolid CC Social, 1989.

6.a3 Bf5 7.Nc3 Be7 8.Be2 0-0 9.0-0 Qd7 10.e4 Bg4 11.Nd5 Nd5.

6.a3 Bg4 7.Nc3 Be7 8.Be2 0-0 9.0-0 d5 10.d4 e4 11.Ne5 Be2.

6.a3 Bg4 7.Be2 Be7 8.0-0 0-0 9.Nbd2 h6 10.c4 Qd7 11.Rc1 Na7 (11...Bf5 12.e4 Be6 13.b5 ab5 14.cb5=) 12.h3 Bh5 13.Qc2 Rfe8 (13...Nc6 14.d4+/-) 14.Ne4 White prepares the advance c5 14...Ne4 (14...Bg6 15.Nh4 Bh7 16.Nc3=) 15.de4 Bg6 16.Rfd1 Qe6 17.c5 dc5? (better is 17...Qf6!?+/-) 18.Ne5 (better is 18.Bc4 Qc8 19.Ne5+–) 18...Bf6? (better is 18...cb4 19.ab4 Qb6+–) 19.Ng6 Bb2 20.Nf4 (20.Qb2?! Qg6 21.Rc5 Re7+–) 20...Bc1 (20...Qa2 21.Rb1 Qa3 22.Rb2 cb4+–) 21.Ne6 (21.Rc1 Qe4 22.Qe4 Re4+=) 21...Re6 22.Qc1 c6 (22...cb4 23.Qc7 Rf8 24.ab4+–) 23.Qc5 Re4 (23...Nb5 24.a4 b6 25.Qb6+– (25.ab5?! bc5 26.ba6 cb4+=; 25.Bb5? bc5 26.Bc4 Re4-+)) 24.Rd7 Nb5 25.Bb5 ab5 26.Qf5 (26.Qf5 Rf4 27.Qf4+–) 1–0. pierre – anony, internet, 2015.

6.a3 g6 7.Nc3 Bh6 8.Be2 0-0 9.0-0 Re8 10.h4 Bf5 11.Nd2 d5.

6.a3 h6 7.Nc3 Be7 8.Be2 0-0 9.0-0 Be6 10.Qd2 d5 11.d4 Qd6.

4.d4 ed4

5.ed4 Nd5 6.Bc4 (6.Nc3!? Nc3 7.Bc3=) 6…Nb4. Reed,Ken - Austin,Ken, NZL NZCCA TT Class, 1997.

5.Qd4 a6 6.Qf4 Be7 7.Nc3 Nc6 8.b5 ab5 9.Bb5 Bd7 10.Nf3 0-0 11.Bd3 d5 12.Nd5 Nd5 13.Qe4 Bb4 14.Ke2 Re8 (14...Bf5 15.Qf5 g6 16.Qg5 Nc3 17.Bc3 Bc3 18.Qd8 Nd8 19.Rad1+=) 15.Qh7= (worse is 15.Qd5 Ra5 16.Qb3 Qe7+=) 15...Kf8 16.Qg7 Ke7 17.Ng5 Bg4 18.Kf1 Bh5 19.Qh7 Rh8 20.Qh8 Qh8 21.Bh8 Rh8 22.Be4 Rd8 23.a3 Bc3 24.Rb1 b6 25.h4 Ne5 26.Bd5 Rd5 27.Ne4 Ba5 28.Ng3 Nc4 29.e4 Rc5 30.Ra1 Nd2 (30...Bc3 31.Ra2 (worse is 31.Nh5 Ba1 32.Ke2 Rh5 33.Ra1 Rh4-+) 31...Nd2 32.Kg1+=) 31.Kg1+= Bg6 32.h5 Bh7 33.Rc1 Ne4 34.Ne4 Be4 35.Rh4 Bh7 36.c4 b5 37.h6 (37.g3 Kf6+=) 37...Kf6= 38.g3 Kg5 (38...Kg6 39.f4=) 39.Rd1 (39.Kg2!?+=) 39...bc4+= 40.f4 (40.Kg2!?+=) 40...Kf6–/+ 41.g4 Kg6 (41...c3!? 42.Rh2 Bb6–/+) 42.Kf1 (42.Kf2!?=) 42...c3 43.Ke2 Kf6 44.Rh3 (44.g5 Kg6+=) 44...c2–/+ 45.Rc1 Rd5 (45...Rc4!? 46.g5 Kf5–/+) 46.Re3+= Rd2 47.Kf3 Rd1?? (better is 47...Bd3 48.Ree1 Bc3–/+) 48.g5+– Kf5 (48...Kg6 49.Rc2 Kh5 50.Rh2 Kg6 51.Rhe2+–) 49.Re5 Kg6 50.Rc2 Kh5 (50...Bb6 51.Rc6 Rd6 52.Rd6 cd6+–) 51.Rh2 (51.Ra5?! Bc2 52.Rc5 Bg6=) 51...Kg6 52.Ra5 (52.Ra5 Rc1 53.Rd2+–) 1–0. market (2045) – tandberg (1995), GameColony.com, 2002.

5.Qd4 d5 6.a3 Nc6 7.Qd1 Bd6 8.Nf3 =.

5.Bd4 Be6 6.Qf3 Nc6 7.Bf6 Qf6 8.Qf6 gf6 9.b5 Nb4 10.Kd2 Nd5 11.Bd3 c5 12.Ne2 b6 13.c4 Nb4 14.Nbc3 Nd3 15.Kd3 Bg7 16.Nf4 0-0 17.Ncd5 f5 18.Rad1 Kh8 19.Nc7 Rab8 20.Nce6 fe6 21.Ne6 Rfe8 22.Nc7 Re7 23.Nd5 Ree8 24.h3 Rbc8 25.g4 fg4 26.hg4 Be5 27.f4 Bg7 28.g5 (28…Re6 29.Rd2+–; 28.Rd2 h6 29.g5 Kh7+–) 1–0. orane – yowser, 2003.

5.Bd4 g6 6.Nf3 (6.Bb5 c6 7.Bd3 c5=) 6...Bg7 7.Bb5 c6 8.Bd3 (8.Ba4 0-0=) 8...Bg4 (8...c5 9.bc5 dc5 10.Bb2=) 9.h3 (9.0-0 Nbd7+=) 9...Bd7 (9...Be6 10.Nbd2=) 10.0-0+= 0-0 11.c4 d5 (11...a5 12.b5+=) 12.Nbd2 Re8 (12...Be6 13.c5+=) 13.Qc2 dc4 (13...Be6 14.Rfd1+=) 14.Nc4+/- White fights for the Initiative. 14...Be6 15.Rfd1 Bc4 (15...Qe7 16.Bc5 Qc7 17.Rac1+=) 16.Bc4+/- Qc8 (16...Nbd7 17.Qb3 Qe7 18.Rac1+/-) 17.Ng5 Nd5 (17...Re7!?+/-) 18.e4+– Bd4 19.Rd4 h6 (19...b5 20.Bb3 a5 21.ba5 h6 22.Nf7 Kf7 23.ed5 Kg7+–) 20.Nf7! (worse is 20.ed5 hg5 21.d6 Kg7+–) 20...Kf7 21.ed5 cd5 (21...Kg7 22.Rf4 Nd7 23.Qb2 Ne5+–) 22.Rf4 Kg7 (22...Ke7 23.Re1 Kd6 24.Rf6 Re6 25.Ree6 Qe6 26.Re6 Ke6 27.Qg6 Kd7 28.Qf7 Kd8 29.Bd5 a5 30.Qb7 ab4 31.Qa8 Kc7 32.Bf3 Kd6 33.Qb8 Ke6 34.Qb6 Ke5 35.Qc5 Ke6 36.Bg4 Kf7 37.Qf5 Kg7 38.Qd7 Kg6 39.Bh5 Kg5 40.h4 Kf6 41.f4 b3 42.Qf7) 23.Qc3 Kh7 (23...Kg8 24.Bd5 Qe6 25.Be6 Re6 26.Qc8 Re8 27.Qe8 Kg7 28.Rf7) 24.Rf7 Kg8 25.Qg7 1–0. market (2195) – Oriovac (1930), GameColony.com, 2002.

5.e4 c5 6.f3 –/+.

5.e4 Be7 6.c4 (6.Qd4 Nc6 7.Bb5 a5 8.Bc6 bc6 9.ba5 d5+=) 6...dc3 (6...d5 7.c5 de4 8.Qd4-+) 7.Nc3 0-0 8.Nf3 Bg4 (8...Re8 9.Be2–/+) 9.Be2 c6 10.0-0 d5 11.ed5 Nd5 12.Nd5 Qd5 13.a3 Qd1 (13...a5 14.ba5 Ra5 15.Qc1–/+) 14.Rfd1 a5 15.b5 cb5 16.Rd5 Nc6 (16...b4 17.ab4 a4 18.h3–/+) 17.Rb5+= Rfe8 18.h3 Bd6 19.Rd1 (19.Kf1!? Bc8 20.Rd1=) 19...Re2–/+ 20.hg4 Bc5 (20...Rd8 21.Kf1 Rc2 22.Ne1+=). Binder,Klaus – Schoemig,Anton, DESC, 2001.

5.ed4 d5

6.a3 a5 7.ba5 Bd6 8.Qe2 =+.

6.a3 Be7 7.Bd3= Bg4 (7...a5 8.b5=) 8.f3 (8.Nf3 0-0=) 8...Be6 9.Ne2 c6 (9...a5 10.b5=) 10.Nf4+= Qd7 (10...Bd7 11.0-0+=) 11.Qe2 (11.0-0 Bf5+=) 11...Bf5= 12.0-0 Bd3 13.Nd3 0-0 14.Ne5 (14.Re1 Re8 15.Nd2 h6=) 14...Qd8 (14...Qf5 15.Nc3=) 15.Nd2 (15.Re1 Re8=) 15...Bd6 (15...Nbd7 16.c4=) 16.Rae1 (16.c4 Nbd7+=) 16...Nbd7 (16...a5 17.Bc3=) 17.g4 (17.c4 h5+=) 17...Nb6 (17...a5 18.b5+=) 18.g5 (18.c4 Na4 19.Ba1 dc4 20.Ndc4 Nb6=) 18...Nfd7+= 19.f4 f6 (19...Na4 20.Ba1+=) 20.Nc6 (20.Nd3 Rf7 21.Nc5 Qb8+= (worse is 21...fg5 22.Nb7 Qf6 23.Nd6 Qd6 24.fg5+/-)) 20...bc6 (20...Qc7 21.Ne7 Be7 22.Qe7+=) 21.Qe6= Kh8 22.Qd6 fg5 23.f5 (worse is 23.Qc6 Rc8 24.Qe6 Rc2+=) 23...Rc8 (23...g4 24.Qe7= (worse is 24.Qc6 Rc8 25.Qd6 Rc2–/+)) 24.Re7 (24.Qe7 g4=) 24...Rf6 ½–½. Ojeda,Jesus David (2070) – Hernandez Osorio,Edwin (1670), Ocana Colombia, Open, 2016.

6.a3 Bd6

7.Nf3 0-0

8.Nbd2 Re8 9.Be2 –/+.

8.Nbd2 Bg4 9.Be2+= Nbd7 10.0-0 Re8 11.c4 Bf4 12.Re1 dc4 13.Nc4 Nd5 14.h3 (14.Bc1 Rc8=) 14...Be6 15.Bd3 N7b6 (15...Qf6 16.Bc1+=) 16.Nb6= ab6 17.Qc2 h6 18.Be4 (18.Bf5 Qf6 19.Be6 Re6 20.Re6 Qe6=) 18...Bd6 (18...c6 19.b5=) 19.Ne5 b5 20.Rac1 (20.f4 g6=) 20...c6 (20...Qg5 21.Bh7 Kh8 22.Be4+=) 21.Bf5 (21.Re2 Nf4 22.Re3 Qg5+=) 21...Qc8 (21...Qg5 22.Be6 Re6 23.Nf3+=) 22.Be6 (22.Be4 Qc7=) 22...Qe6+= 23.Nf3 (23.Kf1 Qf6+=) 23...Qf6 24.Ne5 Re7 25.Ng4 Qf4 26.Re7 Ne7 27.g3 (27.Re1 Nd5+=) 27...Qg5+= 28.f4 Qf5 (28...Qh5!? 29.Kh2 Nd5+=) 29.Qf5= Nf5 30.Kf2 Re8 31.Ne5 (31.d5 cd5 32.Rd1 h5+=) 31...f6 32.Nf3 g5 33.Re1 (better is 33.g4!? Ne7 34.fg5 hg5 35.Re1=) 33...Re1–/+ 34.Ne1 gf4 35.gf4 (35.g4!? Ng7 36.Nd3+=) 35...Bf4–/+ 36.Nf3 (36.d5 Kf7 37.dc6 bc6–/+) 36...Ne3-+ 37.Ke2 (37.Ne1 Bg5 38.Nd3 Nc4-+) 37...Nc4 38.Bc3 Kf7 39.Nd2 (39.Kd3 Na3 40.Ke4 Bg3-+) 39...Nd2 (39...Na3 40.Kf3 Bg5 41.Ne4-+) 40.Bd2 Bd2 41.Kd2 Ke6 42.Ke3 Kd5 43.Kf4 (43.Kd3-+) 0–1. Skolozoubov,Alexander – Vovsha,Eli, Wch U12 Disney, 1996.

8.Be2 a5 9.b5 Re8 =+.

8.Be2 Nbd7 9.0-0 Ne4 10.Nbd2 Ndf6 11.Ne5 Nd2 12.Qd2 Ne4 13.Qd3 Qg5 14.f4 Qf6 (14...Qh6 15.c4=) 15.Rae1 (15.c4 Bf5+=) 15...Qh6 (15...a5 16.b5=) 16.f5 (16.c4 c6=) 16...g6 (16...Re8!?=) 17.Bc1 Qg7 18.Ng4 g5 19.f6 Qg6 20.c3 (20.Ne5!? Qh6 21.c4+=) 20...Bg4= 21.Bg4 Nf6 22.Qg6 fg6 23.Be6 Kg7 24.Bg5 c6 25.c4 dc4 26.Bc4 Nd5 27.Rf8 Rf8 28.Re6 Bf4 29.Bd5 (29.Bf4 Rf4 30.Bd5 cd5+=) 29...Bg5= 30.Bf3 (30.Bb3 Rd8+=) 30...Rd8+= 31.Re4 Bf6 ½–½. Lukovski,Lev (2095) – Friedsam,Manfred (1800), Leverkusen–ch op, 2005.

8.Be2 Re8 9.0-0 Nbd7 10.c4 c6 11.Nc3 Nf8 12.Re1 Ng6 13.g3 Bg4 14.Nd2 Be2 15.Re2 Qd7 16.Re8 Re8 (worse is 16...Ne8 17.cd5 cd5 18.Qf3+=) 17.Qf3 Qe6 18.cd5 Nd5 19.Nce4 Bf8 20.Re1 Qd7 21.Kg2 h6 22.Rd1 Bd6 23.Nc4 Bb8 24.Bc1?? (better is 24.Nc5 Qe7 25.Na5–/+) 24...Re4!-+ 25.Qe4 Theme: Deflection from c3 25...Nc3 A double attack 26.Qc2 Qd5 27.Kg1 Nd1 (27...Qc4 28.Rd3 Ne2 29.Qe2 Qc1 30.Rd1 Qa3 31.Qe8 Nf8 32.Qb8+=) 28.Nd2 Nf2 29.Kf2 Qd4 30.Kg2 Qd5 31.Qe4 Qe4 32.Ne4 b6 33.a4 Be5 34.Bd2 Ne7 35.a5 Nd5 36.Kf3 f5 Black gets the initiative 37.Nf2 Bc3 38.Bc3 Nc3 39.Kf4 Nd5 40.Kf5 Nb4 41.ab6 ab6 42.Ke6 c5 43.Ne4 Nc6 44.Kd5 Nd4 45.h3 Kf7 46.g4? (better is 46.Nd6 Kf6 47.Nc4–/+) 46...Ke7 47.Nd6 Kd7 48.h4 Nf3 49.Nf5 g5 50.h5 Nh2 (better is 50...c4!? 51.Kc4 Ne5 52.Kb5 Ng4 53.Kb6 Ke6-+) 51.Nh6+= Kc7 52.Ke5 Kc6 53.Kf5 c4 54.Nf7 (54.Kg5?? c3 55.Nf5 Nf3 56.Kf4 c2-+) 54...c3 55.Ne5 Kc5? (55...Kd5 56.h6 c2+–) 56.h6+– (56.Kg5?? Nf3!? 57.Nf3 c2-+) 56...c2 57.Nd3 Kc4 58.Nc1 Kc3 59.h7 Kd2 60.h8Q (better is 60.Na2 Ke2+–) 60...Kc1 61.Qc3 (61.Qh2?! Kb1 62.Qg1 c1Q 63.Qb6 Ka2+/-) 61...Kd1 (61...Nf1 62.Kg5 Kd1 63.Qd4 Nd2 64.Qg1 Ke2 65.Kf4+–) 62.Qd3 Kc1 63.Ke4 Ng4 64.Kd4 (better is 64.Qa3 Kd1 65.Qa4 b5 66.Qd4 Ke1+–) 64...Nf2 65.Qa3?? (65.Qe2!? Kb1 66.Qb5 Ka2 67.Qg5 Nd1+–) 65...Kb1? (65...Kd2 66.Qc3 Kd1 67.Qf3 Ke1 68.Qe3 Kd1=) 66.Qb3 Kc1 67.Ke3 Nd1 68.Ke2 Nb2?? (68...b5+–) 69.Qa2 (69.Qa2 Nd3 70.Qa1; 69.Qb6?! Kb1 70.Qg6 Nc4+–) 1–0. Gimeno Higueras,Roberto – Custard Gasco,Daniel, It (open) Silla (Spain), 2003.

5.ed4 Be7

6.d5 0-0 7.Nf3 c6 8.Nc3 =+.

6.Nf3 Bg4 7.Be2 Nc6 8.b5 Nb8 9.c4 Bf3 10.Bf3 0-0 11.0-0 c6 12.a4 Qc8 13.Qd3 Nbd7 14.Nc3 cb5 15.ab5 Nb6 16.Rfc1 Qc4 17.Qe3 Qe6 18.Qe6 fe6 19.Bb7 Rab8 20.Ra7 Rfe8 21.Bc6 Nfd7 22.Bd7 Nd7 23.Rd7 d5 24.Ra1 Bb4 25.Raa7 Bc3 26.Bc3 Rb5 27.h4 Rb3 28.Rg7 Kh8 29.Bd2 Rd3 30.Bh6 Rd4 31.Rh7 Kg8 32.Rag7 1–0. phildo (1800) – kleinemax, gameknot.com, 2014.

5.Qd4 Nc6

6.Bb5 a6 7.Bc6 bc6 8.Nf3 Bf5 9.0-0 Qd7 10.Qc4 Be7 11.Nd4 Be6 12.Nc6?? (better is 12.Qc6 Qc6 13.Nc6+=) 12...Bc4-+ 13.Na3 (13.Ne7 Bf1 14.Kf1 Qb5 15.Kg1 Qb4-+) 13...Bd5 (13...Qc6 14.Nc4 Qc4 15.a3-+) 14.f3 (14.Ne7 Qe7 15.c4 Bc6-+) 14...0-0 (14...Qc6 15.c4 Be6 16.Rab1-+) 15.c4 (15.Ne7 Qe7 16.e4 Be6-+) 15...Bc6 16.c5 Rab8 (16...dc5 17.bc5 Bc5 18.Bf6 gf6 19.Nc4-+) 17.Rac1 Rb4 18.Bc3 Rbb8 (18...Ra4 19.cd6 Qd6 20.Nc2-+) 19.Rfe1 Qf5 (better is 19...Bd5 20.Rc2-+) 20.e4 Qg6 (20...Qc5 21.Kh1 Qa3 22.Bf6 Bf6 23.Rc6 Qa2 24.Rc7-+) 21.Ba5 Rb2 22.g4 Ng4! 23.Bc3 (23.fg4 Qg4) 23...Ne3 24.Kh1 Qg2 0–1. Pscheidl,Carolin – Pscheidl,Udo (1910), remoteschach.de, 2008.

6.Qd2 Be7 7.b5 Ne5=+ 8.h3 0-0 9.Nf3 Nf3 10.gf3 c6 11.Nc3 Be6 12.Rg1 cb5 13.Nb5 Qb6 14.Bd4+= Qc6 15.Na7 Qf3 16.Bg2+/- Qf5 17.Bb7 Rab8 18.Bg2 g6 19.Nc6+– Rb7 20.Qb4! Rb4 21.Ne7 Kg7 22.Nf5 Bf5 23.a4 Bc2 24.a5 Rfb8?! 25.Kd2 Bb3 26.a6 d5 27.a7 Ra8 28.Rgb1 Rb5 29.Rb3! Rb3 30.Bd5 Ra7 31.Ra7 (31.Ra7 Rb5 32.e4+–; 31.Ba7?! Nd5 32.Bd4 Kh6+=) 1–0. Mayor – hal1958, playchess.de, 2003.

6.Qf4 Be7 7.b5 Ne5 8.Be2 Ng6 9.Qd4 0-0 10.Nf3 c5 11.Qd3 d5 12.0-0 c4 13.Qd4 Bf5 14.Qd1 Ne4 15.Nd4 Bf6 16.Nc3 Ne7 17.a4 Qc7 18.Bf3 Bg6 19.a5 Be5 20.h3 Rfd8 21.Re1 Bh2 22.Kf1 Bd6 23.a6 Bb4 24.Be4 de4 25.Ra4 Bc3 26.Bc3 Nd5 27.Ba1 ba6=+ 28.ba6 c3 29.Kg1 Rab8 30.Qe2 Rb6 31.Rc4= Qd6 32.Bc3 Nc3 33.Rc3 Ra6 34.Rb3 h6 35.Qf1 Rd7 36.Reb1 Kh7 37.c4 Rb6 38.Rb5 Rb5 39.cb5 Rb7 40.Rc1 f6 41.Qc4 Rd7 42.Qa4 Be8 43.Qc2. sisterofmerci – Azulejos, playchess.de, 2001.

6.Bb5 Bd7

7.Bc6 Bc6 8.f3 (8.Nf3 a5 (8...Bf3 9.gf3 d5 10.Nc3 c6 11.0-0-0 Qc7+=) 9.Nbd2 ab4 10.Qb4 Be7 11.0-0 0-0+=) 8...b5 (8...a5 9.ba5 Ra5 10.Ne2 d5 11.Qf4 Nd7+=) 9.Nd2 (9.Ne2 d5 10.Qf4 Bd6 11.Be5 Nh5+=) 9...Be7 (9...a5 10.ba5 Ra5 11.Ne2 Qa8+=) 10.Ne2 a5 11.Qc3 (11.ba5 Ra5+=) 11...Qd7 (11...Bd7+=) 12.ba5 0-0 13.a3 Bd5 14.e4 Be6 15.Nf4 c5 16.Nb3 Qa7 (16...c4 17.Nd2=) 17.Ne6 fe6 18.Qe3 e5 19.a4 ba4 (19...b4!? 20.Qd3 Nh5=) 20.Ra4+/- Bd8 21.0-0 h6 (21...c4 22.Qa7 Ra7 23.Rc4 Ba5 24.Rd1+/-) 22.Rfa1 Ng4? (better is 22...Nh5+/-) 23.fg4+– Bg5 24.Qe2 c4 25.Nd4! Kh8 (25...ed4 26.Qc4) 26.Kh1 ed4 27.Bd4?? (27.Qc4 Qd7 28.h3+– (28.Qd4 Bf6 29.Qg1 Bb2-+; 28.Bd4?! Qg4 29.Qc3 Bf4+–)) 27...Qd4-+ 28.Qc4 (28.h3!? Qc5-+) 28...Qc4 29.Rc4 Ra5! 30.Rd1 (30.Ra5 Rf1) 30...d5! 31.Rcd4 (31.Rd5 Rf1; 31.ed5 Rd5) 31...Rf2 (better is 31...de4!? 32.Re4 Rc8-+) 32.Rd5 0–1. Mroz,Antoni – Kolendo,Jerzy, corr Poland, 1983.

7.Qf4 Nd5 8.Qe4 Be7?? 9.Qd5+– Nb4 10.Qd2 Nc2 11.Qc2 Bb5 12.Nc3 Bc6 13.Nf3 (13.Nge2 Bg2 14.Rg1 Bc6+–) 13...Bf6 14.0-0 (14.e4 0-0+–) 14...Bf3 (14...0-0 15.e4+–) 15.gf3. Pamieci Krzysztofa P – napohybel, internet, 2016.

7.Qf4 Nd5 8.Qe4 Nde7 9.Nf3 d5 10.Qh4 Ng6 11.Qd8 Rd8 (11...Kd8 12.Bc6 Bc6 13.Bc3=+) 12.a3= a6 13.Be2 f6 14.Nc3 Bg4 15.Rd1 Nce7 16.0-0 c6 17.Rfe1 Bf3 18.Bf3 Ne5 19.Bh5 g6 20.Be2 Bg7 21.f4 Nf7 (21...Nc4!? 22.Bc4 dc4+/-) 22.e4+/- de4 23.Ne4 Rd1 24.Bd1 0-0 25.Bf6 Nf5 26.Bg7 Kg7 27.Nc5 Nd8 28.g3 Nd4 29.Re7 Kh6 30.Nb7 N8e6?? 31.c3 Nb5 32.Re6 Nc3 33.Bg4 Kg7 34.Rc6 Ne4 35.Ra6 Rc8 36.Bc8 1–0. b4_player (2165) – ahkamu (1825), GameColony.com, 2002.

7.Qf4 Be7

8.Nd2 Nd5 9.Qe4 (better is 9.Qg3 Bf6 10.Rb1+=) 9...Nf6 (9...Ndb4 10.Bc6 Bc6 (10...Nc6?! 11.Bg7 d5 12.Qd5=) 11.Qb4 Bg2-+) 10.Bf6+= gf6 11.0-0-0 (11.Ngf3 a5+=) 11...f5 (11...a5 12.ba5 Ra5 13.a4=) 12.Qc4 (12.Qd5 Rg8=) 12...a6 (12...Rg8 13.g3+=) 13.Bc6= Bc6 14.Ngf3 Qd7 15.Rhg1 0-0-0 (15...Rg8!?=) 16.Qf7+= Rdf8 17.Qb3 f4 (17...Rhg8 18.g3+=) 18.Nc4 (18.ef4 Rf4 19.Qe3 Rhf8+=) 18...fe3 (18...Qe8 19.Rd3+=) 19.Nfe5 (19.Nce5!? ef2 20.Nd7 fg1Q 21.Rg1 Bd7 22.Qe3+/-) 19...Qe8 (19...Ba4 20.Qe3 Qf5 21.Qc3 de5 22.Nb6 Kb8 23.Na4 Qf2 24.g3+=) 20.Nc6 Qc6 21.fe3 Bg5 (21...Rf2 22.Rd2 Rhf8 23.Qd3=) 22.Qd3 (22.Rd3 Bf6+=) 22...Rf2 23.Rd2 Rhf8 24.Qd4 (24.a3 h6=) 24...Kb8 25.a3 (25.Na5 Qa4 26.c3 Qa3 27.Kd1 Re8–/+) 25...Rf1 26.Rd1 Bf6?? (better is 26...Rg1 27.Rg1 Rf2=) 27.Rgf1+– (27.Rdf1?! Bd4 28.Rf8 Ka7 29.ed4 Qc4+/-) 27...Bd4 28.Rf8 Ka7 29.Rd4 (29.ed4?! Qc4 30.Rd3 Qd5+–) 29...Qg2 30.Rf7 (30.h4 Qg1 31.Kd2 b5+–) 30...Qh2 31.Kb2 (31.Rc7?! d5 32.Re7 dc4+–) 31...h5 (31...Kb8 32.Re4 d5 33.Re8 Ka7 34.Ne5+–) 32.Rd2 (better is 32.Rdf4 d5 33.Na5 Kb6+–) 32...Qg3 33.Kc3 (33.Rd5!? Qg4 34.Rd4 Qg3+–) 33...h4 34.Re7 (better is 34.Rh7+–) 34...b5?? (better is 34...h3 35.Rh7 b5+/-) 35.Nd6 (35.Rc7 Kb8 36.Rc6 bc4 37.Rcd6 h3 38.Kc4 h2+=) 35...Kb6 36.Ne8 h3 (36...Qe1 37.Nc7 a5+–) 37.Nc7 h2 (37...Kc6 38.Na8+–) 38.Nd5 (better is 38.Na8!? Kc6 39.Re6 Kb7 40.Rd7 Ka8 41.Re8 Qb8 42.Rb8 Kb8+–) 38...Kc6 39.Rh7 Qe1 40.Rh6 Kb7 41.Rh7 Kb8?? (better is 41...Kc6=) 42.Rhh2 Qa1 43.Kd3 Qf1 (43...Qe5 44.e4 Qg3 45.Kd4 Qg7 46.e5 Qg4 47.Kc5 Qc8 48.Kd6 Qd8 49.Ke6 Qg8 50.Kf5+–) 44.Ke4 Qc4 45.Ke5 Qc8 46.Rh7 Qe8 (46...Qg8 47.Rdh2 Qg5 48.Kd6 Qd8 49.Rd7 Qf8 50.Ke5+–) 47.Ne7 (47.Kd4 Qg8 48.Rdh2 Qg4 49.e4 Qg5+–) 47...a5 48.Rd8! 1–0. mtra – Wichtel01, internet, 2002.

8.Nf3 a6 9.Bc6 Bc6 10.0-0 0-0 11.Nd4 Bb5 (11...Be4 12.Rd1=) 12.Nb5 ab5 13.Nc3 d5 14.Nb5 Bb4?? ( 14...c6 15.Nd4 Bd6+=) 15.Qb4+– (15…c6 16.Nd6+–) 1–0. MT – guest173, ICC, 2003.

8.Nf3 0-0

9.a3 a6

10.Bd3 h6 11.0-0 Nh5 12.Qe4 Nf6?? ( 12...g6+=) 13.Bf6+– g6 14.Bb2 Re8 (14...Bf6 15.Nc3+–) 15.Qf4 Bg5 16.Ng5 hg5 17.Qg3 Ne5 18.Nc3 Kg7 19.Nd5 Kg8 (19...g4 20.Bd4+–) 20.f4 gf4 (20...Bc6 21.fe5 Bd5 22.ed6 Qd6 23.Qh3+–) 21.ef4 Nd3 (21...Be6 22.fe5 Bd5 23.Bg6 Kf8 24.Bf7 Re6 25.Be6 Ke8 26.Qg8 Ke7 27.Qf7) 22.Bf6 Qc8 (22...Nb4 23.ab4 Bf5+–) 23.Qh4 1–0. b4_player (2175) – tomvdp_ (1810), GameColony.com online, 2002.

10.Bd3 d5

11.Ne5 a5 12.Nd7 Qd7 13.b5 Nd8 14.Qf3 Re8 15.0-0 Ne6 16.Rd1 Ng5 17.Qf4 +=.

11.Ne5 Nb8 12.Nd7 Nbd7 13.0-0 Bd6 14.Qf5 Re8 15.Bd4 Qe7 16.Nc3 c6 17.Rfb1 =.

11.Ne5 Ne4 12.Nd7 Qd7 13.Be4 de4 14.Qe4 Rfe8 15.Qf3 Bd6 16.0-0 a5 17.ba5 +=.

11.Ne5 Ne5 12.Be5 Rc8 13.Nc3 Re8 14.Bd4 Bg4 15.0-0 Bd6 16.Qg5 h6 17.Qh4 =.

11.Ne5 Re8 12.Nd7 Qd7 13.Bf5 Qd8 14.0-0 Bd6 15.Qh4 Be5 16.Be5 Re5 17.Bd3 =.

10.Bd3 Re8

11.0-0 Be6 12.Ng5+= h6 (12...Qd7 13.Rd1+=) 13.Ne6 fe6 14.Qg3 e5 (14...Rf8 15.Nd2+=) 15.c4 Rf8 (15...Ra7 16.Nc3+/-) 16.Nc3 Qd7 (16...a5 17.b5 Nb8 18.f4+/-) 17.Nd5 Nd8? (better is 17...g5+/-) 18.Bf5!!+– Ne6 (18...Qf5 19.Ne7 Double attack (19.Ne7 Deflection; 19.Ne7 Decoy)) 19.Be5! de5 20.Qe5 Bd6 21.Be6 Qe6?? (21...Kh8 22.Qf5 Qe8+–) 22.Qe6 (22.Qe6 Kh8 23.Nf6 Rf6 24.Qe4+–) 1–0. b4_player (2140) – serginho2 (1895), GameColony.com, 2002.

11.0-0 Ng4 12.Nc3 Bf6 13.Rab1 Nce5 14.Ne4 Nf3 15.Qf3 Bb2 16.Rb2 Qe7 17.Ng3 =.

11.0-0 Nh5 12.Qe4 g6 13.Nd4=.

11.c4 Qc8 12.b5 Nd8 13.Nd4 Ne6 14.Ne6 fe6 15.Qg3 e5 16.Nc3 Rf8 17.f3 =.

11.c4 Nh5 12.Qe4 g6 13.Be2 Bf5 14.Qd5 Bf6 15.Qd2 Bb2 16.Qb2 Qd7 17.0-0 =.

5.Qd4 Be7

6.b5 0-0 7.Nf3 Nbd7 8.a4 Nc5 9.Ba3 (9.Be2!?=) 9...Bf5 10.Bd3 (10.Bc5 dc5 11.Qd2 Qc8+=) 10...Nd3 (better is 10...Bd3!? 11.Bc5 Bc2-+ (11...dc5?! 12.Qd3 a6 13.Nc3=)) 11.cd3+= Ng4 12.0-0? (better is 12.Qd5 Qc8 13.0-0+=) 12...Bf6-+ 13.Qf4 Ba1 (better is 13...Bd3 14.Rd1 Ba1 15.Rd3 Ne5-+) 14.Qf5–/+ Nh6 (14...Qc8 15.Qd5 Be5 16.d4+=) 15.Qe4 (15.Qd5 a6 16.d4 ab5 17.ab5 Bc3+=) 15...d5 16.Qb4 Re8 (16...Re8 17.d4 c5 18.Qc5 Qd7+=). kamera – rocka1 (1625), GameColony.com, 2002.

6.Nf3 0-0 7.Bd3 Bg4 8.Qf4 a5 9.Ng5 Bh5 10.b5 Nbd7 11.0-0 Nc5 12.Nf3 Qd7 13.Nc3 Qg4 14.Qd4 h6 (14...Nd3 15.cd3 c5 16.bc6 bc6 17.Qg4 Bg4 18.Rab1=) 15.Nd5+= Nd5 16.Qd5 Nd3 (16...Bg6 17.Rad1+=) 17.cd3+= (worse is 17.Qd3 Bg6 18.Qd2 Be4+=) 17...b6 (17...Rfc8 18.Rac1+=) 18.Rfc1+/- Ra7 (18...Rac8 19.h3 Qb4 20.Rab1 Bf3 21.Qf3+/-) 19.h3 (19.Rc4 Qg6 20.Nd4 Bd8+– (20...Qd3?? 21.Nc6 Qd5 22.Ne7 Kh7 23.Nd5+–)) 19...Qb4+/- 20.Rab1 Bf3 21.Qf3 Qa4 22.a3 Rd8 23.Qd5 Bg5 (23...Qh4 24.Kf1+/-) 24.Rc6+– Re8 25.Rbc1 Re3 26.fe3 Be3 27.Kh1 Bc1 28.Rc1 Qf4 29.Re1 Qf2 (29...c5 30.bc6 Qf2 31.Bc3+–) 30.Re8 Kh7 31.Qe4 f5 32.Qe6 c6 (32...Qf1 33.Kh2 Qf4 34.Kg1+–) 33.Qg8 Kg6 34.Re6 Kh5 (34...Kg5 35.Qd8 Re7 36.Qe7 Kh5 37.Qf7 Kh4 38.Rh6 gh6 39.Bf6 Kg3 40.Qg6 Kf4 41.Qh6 Kg3 42.Qg5) 35.Qe8 1–0. themonkey – Tandberg, internet, 2002.

6.Nf3= Nc6 7.Qc3 0-0 8.Nbd2 (8.b5 Nb8=) 8...Ne8 (8...Ne5 9.Rd1 Nd5 10.Qb3=) 9.Bd3 Bf6 10.Qa3 Bb2 11.Qb2 Qe7 (11...Qf6 12.Qf6 Nf6 13.b5=) 12.0-0 Bg4 (12...Nf6 13.b5 Ne5 14.Ne5 de5 15.Rad1=) 13.a4 (13.b5 Ne5=) 13...a5 (13...Nf6 14.a5=) 14.b5 Bf3 (14...Nb4 15.Be4=) 15.Nf3+= Ne5 16.Be4 Rb8 17.Ne5 de5 18.c4 (18.Qc3 Nf6 19.Bf5 g6+=) 18...Nf6 19.Qc2 Qc5 (19...Ne4 20.Qe4 Rfd8 21.Rad1=) 20.Rfd1 c6 21.Bd3 (21.Bf5 Rfd8=) 21...Rbd8 22.Rab1 (22.Rac1 Rfe8=) 22...Rfe8 (22...b6 23.bc6 Qc6 24.Bf5=) 23.Be2 (23.bc6 Qc6 24.c5 Qc7+=) 23...e4 (23...Rd1 24.Rd1 cb5 25.ab5=) 24.Rd8 (24.bc6 Rd1 25.Qd1 Qc6=) 24...Rd8 25.bc6 (25.Rd1 Rd1 26.Qd1 cb5 27.ab5 Qc7=) 25...bc6 26.Qb2 (26.Rd1 Rb8=) 26...h6 (26...Qd6 27.Qc3 Qc5 28.Rb7=) 27.Qb6 (27.Qc3 Nd5 28.Qd2 Qe7 29.cd5 Rd5+–) 27...Qb6+= 28.Rb6 Rd2 29.Kf1 Ra2 30.Bd1 ½–½. Woelfelschneider,Peter – Winiger,Albert, TT–07 ETC, 2003.

5.Bd4 c5

6.Bc3 a6 7.bc5 dc5 (7...d5 8.Nf3=) 8.Qd8+= Kd8 9.Bf6 gf6 10.Nc3 Be6 11.0-0-0 Kc7 12.Nf3 Kc6 (12...Nd7 13.Nd5 Kc6 14.c4+=) 13.Bd3 Bh6 ( 13...Kb6!?+/-) 14.Be4+– Kc7 15.Nd5 Bd5 16.Rd5 Nc6 17.Rc5 Rhd8? ( 17...Bf8 18.Rc4 Re8+–) 18.Rh5 (18…Bf8 19.Rh7 Ba3 20.Kb1+–) 1–0. fajgo – tikbalang, internet, 2002.

6.Bc3 cb4 7.Bb4 Nc6 8.Bc3 =.

6.bc5 dc5 7.Bb2 Qd1 8.Kd1 Ne4 (8...Be7 9.Nd2+=) 9.Ke1= f6 (9...Nc6 10.Nf3=) 10.Bd3 (10.Na3 Be6=) 10...Ng5 (10...Nd6 11.Nd2=) 11.Na3 (11.h4 Nf7=) 11...Nc6 12.f4 (12.Ne2 Bd7=) 12...Ne6 13.Nf3 Nb4 (13...Nc7 14.Nb5 Nb5 15.Bb5=) 14.Kf2 (14.Bb5 Bd7 15.Bd7 Kd7 16.Rd1 Kc6=) 14...Nd3 (14...Nc7 15.Bc4=) 15.cd3 b6 16.Rhe1 Ba6 17.d4 (17.Rad1 Rd8 18.Ke2 Bb7=) 17...0-0-0 18.g3 (18.Rac1 Bd3=) 18...cd4 19.ed4 Ba3 20.Ba3 Nd4 21.Rac1 (21.Nd4 Rd4 22.Re7 Rd2 23.Kg1 Rg8+=) 21...Kb7 (21...Kb8!? 22.Nd4 Rd4+=) 22.Nd4 Rd4 23.Re7 Ka8 (better is 23...Kb8!? 24.Rg7 Rd2 25.Kg1 Ra2=) 24.Rcc7+/- (worse is 24.Rg7 Rd2 25.Kg1 Ra2+=) ½–½. Hansen,Soeren – Dargahpour Barough,Arash, Schleswig Holstein–chB U16, 2000.

6.bc5 dc5+= 7.Bb5 Nc6 (7...Bd7 8.Bd7 Nbd7 9.Bc3+=) 8.Bc6 bc6 9.Be5 Qd1 10.Kd1 Ne4 11.Ke2 f6 12.Bc7 Ba6 13.Ke1 Rc8 (13...Kd7 14.Ba5+=) 14.Ba5= Bd6 15.Nf3 Rb8 16.Nc3 (16.Nbd2 Nd2 17.Kd2 Bc4=) 16...Nc3 17.Bc3 0-0 (17...Bc4 18.Rd1 Ke7 19.a3+=) 18.Rd1 Rfd8 19.Nd2 Be7 (19...Bc7 20.e4=) 20.e4 Re8 (20...Kf7 21.a3=) 21.Nb3 c4 22.Na5 White fights for the Initiative (22.Nd2!?=) 22...Bb4+= 23.Bb4 Re4 (23...Rb4 24.c3 Ra4 25.Nc6-+) 24.Kd2= Rb4 25.Kc3 Ra4 26.Nc6 Ra2 27.Rhe1 (27.Na7? Re2 28.Rd8 Kf7-+) 27...Re1 28.Re1 h5 (28...Kf8 29.Na7 Bb7 30.Nb5 Bg2 31.Nd6=) 29.Re8 Kh7 30.Re7 Bc8 31.Nd4 (31.Na7 Bf5 32.Nb5 Rc2 33.Kb4 Bd3-+; 31.Ra7?! Ra7 32.Na7 Ba6+=) 31...Bg4 (31...Kg6 32.Kc4 a5 33.Ra7=) 32.h3 Bc8 33.Rc7 Ba6 34.Ra7 Ra3 35.Kb2 (35.Kb4 Ra1+/-) 35...Ra5 (35...Ra4 36.Ne6 Rb4 37.Kc3+–) 36.Ne6 Rb5 37.Kc3 Bb7 38.Kc4 The passed pawn on c2 will become decisive later 38...Rb6 39.Nf4 Kh6 40.f3 Rb1 41.Ne6 Rb6 (41...g5 42.Kc5+/-) 42.Nd4+– Kg6 (42...Rb2 43.Kc5+–) 43.Kc5 Rb2 44.h4 Bc8 45.g3 Bb7 46.c4 Kh7 (46...Rb1 47.f4+–) 47.Ra5 Bc8 (47...Rf2 48.f4+–) 48.Kd6 Kg6 49.c5 Rg2 (49...Rd2 50.Ra4+–) 50.c6 Rg3 51.Nf5! Rf3? (51...Bf5 52.Rf5) 52.Ne7 Kh6 (52...Kf7 53.Nc8 Rd3 54.Rd5 Rc3+–) 53.Nc8 Rd3 54.Rd5 Rb3 (54...Rc3 55.c7 Rc7 56.Kc7+–) 55.c7 g5 (55...Rb7+–) 56.Ne7 Rc3 57.Rc5 Rc5 58.Kc5 Kg7 59.c8Q Kf7 60.Kd6 f5. marekt (2300) – blik (2375), ICC, 2003.

6.bc5 dc5 7.Bb5 Bd7 8.Bd7 Nbd7 9.Bf6 Qf6+= (worse is 9...gf6 10.Qd5+=).

5.Bd4 Nc6

6.b5 Nd4 7.ed4 Be7 8.Nf3 0-0 9.Bd3 Bg4 10.0-0 c6 11.a4 Nd5 12.h3 Bh5 13.Nbd2 Nf4=+ 14.Ne4 Bf6 15.g3 Nh3 16.Kh2 d5 17.Nf6 Qf6-+ 18.Be2 Bf3 19.Bf3 Ng5 20.Kg2 Rfe8 21.Bg4 Re4 22.c3 Rae8 23.Qd3 g6 24.bc6 bc6 25.Rab1 Rg4 0–1. gtate (1920) – falkbeer (1900), net–chess.com, 2004.

6.b5 Nd4 7.Qd4 Be7 8.Nf3 0-0 9.Bd3= c5 10.Qb2 Bg4 11.Nfd2 d5 12.0-0 c4–/+ 13.Bc4? dc4-+ 14.Nc4 Qc7 15.Ne5 Bd6 16.Ng4 Ng4 17.g3 Be5 18.c3 Rad8 19.Qe2 Nf6 20.Rc1 Nd5 21.Na3 Nc3 22.Qf1 Qa5 23.Nc4 Qb5 24.Ne5 Qe5 25.Qe1 Rc8 26.Rab1 Nb1 27.Rb1 b6 28.a4 Rc4 29.Qe2 Ra4 30.Qc2 Ra1 (30...Ra1 31.Ra1 Qa1 32.Kg2 a5-+) 0–1. makaveli1982 – geo4, internet, 2007.

6.b5 Nd4 7.Qd4 Be7 8.Nf3 0-0 9.Be2 Ng4 10.Nfd2?? Nf2! 11.Kf2 Bf6 12.Qd3 Ba1 13.c3 Re8 14.Nf3 Qf6 15.Qd4 Qe6 16.Qd2 Qf6?? 17.a4?? Bf5 18.Nd4 Bb1 19.Ke1 c5 20.Nb3 Bc3 (20...Bc3 21.Rf1 Bd2 22.Nd2 Qc3-+) 0–1. makaveli1982 – yishai, internet, 2007.

6.Bb5 Be7 7.Bc6= bc6 8.Nf3 0-0 9.0-0 a5 10.c3 Rb8 11.a3 c5 12.Bf6 Bf6 13.bc5 Ba6 14.Re1 dc5 15.Qc1 Qd6 16.e4 Rfe8 17.Qe3 Rb2 18.Nbd2 Be7 (18...Qd3 19.Qc5 Rd2 20.Nd2 Qd2 A) worse is 21.Qa5 Bd4 (worse is 21...Bc3 22.Qa6 Ba1 23.Ra1+/-) 22.Qa6 Bf2 23.Kf1 Qf4–/+; B) 21.e5=) 19.c4 Rd8 20.Rad1 a4 21.Qc3 Ra2 22.e5 (22.h3 Qf6 23.e5 Qg6=) 22...Qd3 (Attacking the isolated pawn on c4) 23.Qa5 Bc4 24.Nc4 (worse is 24.Qc7 Kf8–/+) 24...Qd1 (24...Qc4 25.Rd8 Bd8 26.Qa8=) 25.Rd1 Rd1 26.Ne1 Raa1 (26...Rc1 27.g3 Re2 28.Qa4 Rce1 29.Kg2+=) 27.f3+= Re1 28.Kf2 Red1 29.Qc7 Bh4 30.g3 Ra2 31.Ke3 Bd8 32.Qc5 h6 (32...Rh2 33.Qa7+–) 33.Qa7 f6 34.e6 (The passed pawn on e6 will quickly become a dangerous weapon) (34.Qa4 Re1 35.Kf4 fe5 36.Kg4 Bf6+/-) 34...Rh2 35.Qa4 Rhh1 36.Nd2 Rhe1 37.Kd3 Kh7 38.f4 Be7 39.Qa5 Rg1 40.Qf5 Kg8 41.Qg6 Ba3 42.Qf7 Kh7 43.e7 Be7 44.Qe7 Rg3 45.Kc2 (45.Ke2 Ra1=) 45...Rdg1 46.Qe4 Kh8 (better is 46...Rg6!? 47.Nf3 R1g4=) ½–½. marekt – Flying_Finn, ChessWorld.net, 2003.

6.c3 Nd4 7.cd4 Be7 8.Bc4 0-0 9.Nf3 Bg4 10.Nbd2 d5–/+ 11.Bb3 Ne4 12.h3 Bh5 13.0-0 Nd2 14.Qd2=+ Bf3 15.gf3 Bh4 16.e4 c6 17.Qf4 Bg5–/+ 18.Qg4 Qd6?? 19.e5?? Qe7 20.Kh2 f5–/+ 21.Qg2? f4?? 22.Rg1 h6 23.Qg4 Qb4 24.Qe6 Kh8 25.h4 Bh4 26.Rg6?? Qd2 27.Rag1?? Qf2-+ 28.R1g2 Qf3?? 29.Qg4 Qg4 30.R2g4 Bg5 31.Kg2 Kh7 32.Bc2 Kh8 33.Kf3?? a5 34.Rd6 Rad8 35.a4 Rd6 36.ed6 Rd8 0–1. gtate (1995) – bar (1950), net–chess.com, 2005.

6.Nf3. gtate (1900) – awatts (1935), net–chess.com, 2005.

6.Bb5 a6

7.Bc6 bc6

8.c3 A) 8...c5 9.bc5 (9.Bf6 Qf6 10.bc5 Rb8 11.Ne2 dc5 12.Nd2=) 9...dc5 10.Bf6 Qf6 11.Qa4 c6 12.Nd2=; B) 8...Ne4 9.Nd2 Nd2 10.Qd2 c5 11.bc5 Bb7 12.f3=.

8.c4 Rb8 9.Qa4 Nd7 10.Nf3 c5 11.bc5 dc5 12.Bc3 =.

8.c4 d5 9.a3 (9.Qa4 a5 10.Bc5 Bg4 11.Bf8 Kf8 12.ba5=) 9...dc4 (9...a5 10.ba5 Ra5 11.Nf3 Bf5 12.0-0=) 10.Nd2 Be6 (10...c5 11.bc5 c3 12.Bc3=) 11.Ngf3 (11.Qc2 c5 12.bc5=) 11...a5 12.ba5 Ra5 13.Qc1 Qa8 14.0-0 Ba3 15.Qc3 (15.Qc2 Nh5+=) 15...Nd5= 16.Qc2 Nf6 (16...0-0 17.Ng5 (17.Nc4?! Nb4 18.Qc3 Bc4 19.Qc4 Qa6+=) 17...g6 18.Ne6 fe6 19.Nc4+/-) 17.Ne4 (better is 17.Bf6!? gf6 18.Nc4 Bc4 19.Qc4+/-) 17...Nh5+= 18.Qc3 Ra6 19.Bg7 Rg8 20.Bh6 Bd6 21.Nfg5 (21.Nfg5 c5 22.Ra6 Qa6 23.Nh7+/-) 1–0. Wrede,Christian – Bass,Stanley, WCCF, 2004.

8.Nd2 a5 9.ba5 Ra5 10.Ngf3 Be7 11.c4 0-0 12.0-0 Bg4 13.Qc2 Qd7 14.Rfe1 Rfa8 15.e4 Nh5 16.Be3 Bf6 17.Bd4 Bd4 18.Nd4 c5 19.N4b3 Ra3 20.Nb1 R3a7 21.Nc3 Nf4 22.Qd2 Ng6 23.f4 Qe7 24.e5 de5 25.fe5 Be6 26.Qe2 Qh4 27.Qe4 Bc4 28.Nc5 Qe4 29.Re4 Ba2 30.Rb4 Be6 31.Ra7 Ra7 32.Rb8 Nf8 33.N3e4 Ra5 34.Rb7 Ra1 35.Kf2 Ra2 36.Kf3 Ra3 ½–½. mrkt – Nishka, ChessWorld.net, 2003.

8.Qf3 Bb7 9.Nd2 Rb8 10.Bf6+= Qf6 11.Qf6 gf6 12.Ngf3 Bg7 13.Rb1 0-0 14.c4 c5 15.bc5 dc5 16.Ke2 Bf3 (16...f5!?+/-) 17.Kf3 f5 18.Nb3 Be5 (18...Rb4 19.Rbc1+–) 19.Nc5 Ra8 20.Nd7 Rfe8 21.Rb7 c6 (21...f6 22.Rd1+–) 22.Rhb1 f6 23.R1b6 Rec8 24.Ke2 f4 25.ef4 (25…Bd4 26.c5+–) 1–0. mrkt – seehero, ChessWorld.net, 2003.

8.Qf3 Bb7 9.Nd2 Be7 10.e4 =.

8.Qf3 Bb7 9.Bf6 Qf6 10.Qf6 gf6 11.Nf3 Bg7 (11...d5 12.Nbd2=) 12.Ke2 (12.Nbd2!?+=) 12...f5= 13.c3 0-0 (13...f4 14.ef4 c5 15.bc5=) 14.g3 c5 15.bc5 dc5 16.h3 (16.Rc1 Be4=) 16...Rad8 (16...Rfb8 17.a3=) 17.Rc1 a5 (17...Be4 18.Nbd2=) 18.Nfd2 Ba6 19.Ke1 Bd3 (19...Rd6!?=) 20.Nb3+/- Bc4 (20...Rd5 21.Na5 Ra8 22.Nb3+=) 21.Na5 Bb5 (better is 21...Bd5!?+/-) 22.a4 Ba6 23.Nc6 (better is 23.Nb3+–) 23...Rd6? (better is 23...Rde8+–) 24.Ne7 Kh8 25.Nf5 Rd7 (25...Rb6 26.Ng7 Kg7 27.Nd2+–) 26.Ng7 Kg7 27.Nd2 Rfd8 28.Ne4 Rd5 29.a5 (29.c4 Re5 30.Nd2 Kf6+–) 29...f5 (29...Bd3 30.Ra4+–) 30.c4 Rd3 (30...Re5 31.Nd2+–) 31.Nc5 R3d6 32.g4 Rc6 (32...Kf6 33.gf5 Kf5 34.Rcb1+–) 33.Na6 Ra6 34.Rcb1 fg4 35.hg4 Rh6 (35...Rda8 36.Rb5+–) 36.Ke2 Rhd6 (36...Ra6 37.Rb7 Rd7 38.f4+–) 37.Rb7 (better is 37.a6 Ra8 38.a7 Rf6+–) 37...R8d7 (37...Rd2 38.Kf1+–) 38.f4 (38.a6 Rd8 39.a7 Ra8+–) 38...Kg6 (38...Ra6+–) 39.a6 Rd2 40.Kf3 Rc2 (40...Rd1 41.Ra5 Re7+–) 41.a7 Rdd2 42.Ra6 Rd6 43.Rd6 cd6 44.a8Q 1–0. market (2250) – toranaga01 (1760), GameColony.com, 2002.

8.Qf3 d5 9.Bf6 Qf6 10.Qf6 gf6 11.c3 Rg8 12.g3 +=.

8.Qf3 Nd5 9.a3 (9.c3 Qg5 10.a3 a5 11.Qe4 Be6 12.Nd2=) 9...a5 10.e4 Nf6 11.ba5 Be7 12.Ne2 =.

8.Qf3 Bd7 9.Bf6 Qf6 (9...gf6 10.Ne2 d5 11.a3+=) 10.Qf6 gf6 11.Ne2 (11.Nf3=) 11...a5 12.ba5 Ra5 13.0-0 Bg7 14.Nd4 f5 15.c3 c5 16.Ne2 Ke7 17.Rd1 Be6 18.a3 Bb3 19.Rd2 Rha8 20.Rb2 Bc4 21.Nc1 Be6 (21...c6 22.Rc2+=) 22.f3 (22.Nd3 d5=) 22...R8a6 23.Kf2 Rb6 24.Rb6 cb6 25.Ke2 b5 26.Kd2 Ra8 27.Kc2 Bh6 28.f4 Bg7 29.Kb2 Kd7 30.g3 Bd5 31.Na2 (31.Kc2!?–/+) 31...Re8-+ 32.Nc1 (better is 32.Kc2-+) 32...Re3 33.a4 (33.Kc2-+) 33...b4 34.a5 (34.Kc2-+) 34...bc3 35.Kc2 (35.Nc3 Rc3 36.Rb1 Rg3 37.Kc2 Rg2 38.Kd1 Bf3 39.Ne2 Re2 40.Rb7 Ke6-+) 35...Be4 36.Kd1 c2 37.Kd2 Ba1 (37...Ba1 38.Nc3 Rc3-+) 0–1. Jaszczuk,Juliusz – Stoliar,Efim Samoilovich (2395), Wch Seniors Bad Woerishofen, 1992.

8.Nf3 A) 8...Rb8 9.a3 (9.c3 c5 10.bc5 dc5 11.Bf6 Qf6 12.a3+=) 9...c5 10.bc5 dc5 11.Bf6 Qf6 12.Nbd2=; B) 8...d5 9.c3 (9.a3 a5 10.ba5 Bd6 11.c4 0-0 12.c5=) 9...a5 10.Ne5 Qd6 11.a3 Qe6 12.Nd2=; C) 8...c5 9.bc5 dc5 10.Bb2 Qd1 11.Kd1 Ne4 12.Ke2+=.

6.Bb5 Bd7

7.Bc3 a6 8.Bd3 Be7 (8...Nd5 9.a3=) 9.Nf3 h6 (9...d5 10.a3=) 10.0-0 0-0 11.a3 Re8 12.Bb2 Bf8 (12...Bg4 13.c4=) 13.Nbd2+= Ne5 14.Ne5 de5 15.Ne4 (15.Qf3 Bc6 16.e4 a5+=) 15...Bc6 (15...a5 16.Qd2=) 16.Nf6 Qf6 17.Qg4 (17.f4 Bd6+=) 17...Qe6 (17...a5 18.Rfd1=) 18.Bf5+= Qe7 19.Rfd1 Qg5 (19...a5 20.Bd7 h5 21.Qf5+/-) 20.Qg5+/- hg5 21.c4 f6 (21...Ba4 22.Rd5 Bb3 23.Re5 (23.Be5 c6 24.Ra5 b6-+) 23...Bc4 24.Rc1+=) 22.Bd7 Bd7 23.Rd7 Rac8 24.Rad1 (24.c5 Red8 25.Rad1 Rd7 26.Rd7 Kh7+/-) ½–½. Hjortstam,Kurt – Jatkowski,Steve A, corr 3GMM–01, 1995.

7.Nc3 Nb4 8.Bf6 gf6 (worse is 8...Qf6 9.Bd7 Kd8 10.Nge2 Kd7 11.Rb1+/-) 9.Bd7 Qd7 10.Rb1 d5 (10...Qc6 11.Nge2 Na6= (11...Qg2? 12.Rg1 Qc6 13.Rb4+–)) 11.a3+= Nc6 12.Rb7 Ba3 13.Qd5 Rd8 (better is 13...0-0-0!? 14.Qd7 Rd7=) 14.Qd7+/- Kd7 15.Nd5 a5 16.Rc7 (16.Ke2 Bd6+=) 16...Kd6 17.c4 Ne5 18.Ra7 (18.Nh3 Nc4 19.Rc4 Kd5=) 18...Nc4= 19.Nf6 Ke5 20.Ng4 (worse is 20.Rf7 Ke6 21.Rh7 Bb4 22.Ke2 Rd2 23.Kf3 Rf8–/+) 20...Ke6 21.Nh3 Bb4 22.Ke2 Rd2 (better is 22...h5!? 23.Nf4 Kf5 24.Rf7 Kg4 25.h3 Kg5 26.Ne6 Kg6 27.Nd8 Rd8=) 23.Kf3+/- h5 24.Nf4 Kd6 25.Nf6 Kc6 26.Rb1 (worse is 26.N4h5 Kb6 27.Rc1 Ne5 (27...Ka7?! 28.Rc4 Kb6 29.g4=) 28.Ke4 Ka7 29.Ke5 Bd6 30.Ke4 Rf2–/+) 26...Kb6 27.Re7 Kc6 28.Re8 Re8 29.Ne8 h4 30.Rc1 Kc5 31.Kg4 Ba3 32.Re1 (32.Rf1 Bb2 33.Nh5 Kb4=) 32...Bb2= 33.Kh4 (33.Re2 Rd8 34.Nc7 Rd7+=) 33...a4 (33...Rd8 34.Nc7 Rd7 35.Ncd5 Rd5 36.Nd5 Kd5 37.e4 Kd4 38.f3–/+) 34.Kg5 a3 35.Nf6 Kb4 36.h4 a2 37.Ne4 Rd8 38.Ne2 (38.Kf5 Na3 39.Ng5 Nb1 40.Nf7 Rd2-+) 38...Rd5 39.Kf4 (better is 39.Kh6–/+) 39...Na3 40.N4c3 Bc3 41.Nc3 Kc3 42.Ra1 Kb2 43.Ra2 Ka2 44.g4 Kb3 45.h5 Rd2 46.Kg3 Kc4 47.g5 Kd5 48.g6 (48.f3 Ke5 49.h6 Nc4-+) 48...fg6 49.hg6 Ke4 50.Kh4 (50.g7 Rd8-+) 50...Rf2 51.Kg5 (51.Kh5 Rh2 52.Kg5 Rg2 53.Kf6 Nc4-+) 51...Ke5 52.Kh6 (52.Kg4 Rg2 53.Kh5 Kf5-+) 52...Kf6 (52...Kf6 53.Kh5 Nc4-+) 0–1. Rosner,Dirk – Gabor, Tiger SC, 2000.

7.Nc3 Nb4 8.Bf6= White gets in control 8...Qf6 9.Bd7 Kd7? (better is 9...Kd8 10.Nge2 Kd7+/-) 10.Qg4+– Ke8 11.Qb4 d5 12.Qb3 c6 13.Nge2 Rb8 (13...b5 14.Nd4 b4 15.Nce2+–) 14.Rd1 Bc5 (14...Qg6 15.0-0+–) 15.0-0 b5 16.e4 d4 17.e5 Qe5 (17...Qh4 18.Nb1+–) 18.Nd4!! Qc7 (18...Qd4 19.Rd4) 19.Ne4 Be7 (19...Bd4 20.Rd4 Rd8 21.Rfd1 Rd4 22.Rd4+–) 20.Qf3 (better is 20.Nf5 Kf8+–) 20...h6 (20...Rd8+–) 21.Rfe1 Rd8 22.Nc3 Rc8 (22...Rd4 23.Nb5!! cb5 24.Rd4 f5 25.Qa8 Kf7 26.Qh8 Qa5 27.Re7 Ke7 28.Qg7 Ke8 29.Qe5 Kf8 30.Qf5 Ke8 31.Qe6 Kf8 32.Rf4 Kg7 33.Rf7 Kh8 34.Qe8) 23.Nf5 Kf8 24.Re7 Qa5 (24...Qe7 25.Ne7 Ke7 26.Qe3 Kf8 27.Qc5 Kg8 28.Nb5 a5+–) 25.Nh6! 1–0. Rosner,Dirk (1960) – Koenig,Michael (1785), DESC, 2002.

7.Nc3 Nd4 8.Bd7 Qd7 9.Qd4 d5 10.Nf3 c6 11.0-0 Be7 12.Rad1 Qf5 13.Rfe1 0-0 14.e4 de4 15.Ne4 Rad8 16.Nf6 Bf6 17.Qa7 Rd1 18.Rd1 Qc2 19.Rf1 b5 20.Re1 h6 21.Qb7 Qc4 22.h3 Bc3 23.Rc1 c5 24.bc5 Qc5 25.Qd7 b4 26.Rc2 Qc4 27.Qe7 Qd5 ½–½. mrkt – charly999, ChessWorld.net, 2003.

7.Nc3 Nd4 8.Bd7 Qd7 9.Qd4 d5 10.Nf3 c6 11.0-0 Be7 12.Rad1 Qf5 13.Rfe1 0-0 (13...Qc2 14.e4 de4 15.Rd2 (worse is 15.Ne4 0-0+=) 15...Qd2 16.Nd2+– (16.Qd2?! ef3 17.Qd6 Ng8+–)) 14.e4 de4 15.Ne4 Rad8 16.Nf6 Bf6 17.Qa7 Rd1 18.Rd1 Qc2 19.Rf1 b5 20.Re1 h6 21.Qb7 Qc4 22.h3 Bc3 23.Rc1 c5 24.bc5 Qc5 25.Qd7 b4 26.Rc2 Qc4 27.Qe7 Qd5 ½–½. marekt – charly999, ChessWorld.net, 2003.

7.Nc3 Be7 8.Bc6 bc6 9.Nge2 (9.Nf3 a5 (9...0-0 10.0-0 a5 11.a3 ab4 12.ab4 Ra1 13.Qa1 Qa8 14.Qa8 Ra8; 9...Be6 10.Qd3 a5 11.b5 c5 12.Bf6 Bf6 13.0-0 0-0 14.e4 a4; 9...g6 10.0-0 0-0 11.e4 a5 12.a3 Qb8 13.ba5 Ra5 14.Qd2 Qa8; 9...c5 10.bc5 dc5 11.Be5 0-0 12.0-0 Rb8 13.Qd3 Bc6 14.Qa6 Rb6) 10.a3 ab4 11.ab4 Ra1 (11...Rb8 12.Rb1 0-0 13.0-0 d5 14.Bc5 Bg4) 12.Qa1 d5= (12...0-0 13.Qa5 Qc8 14.0-0 Bf5) 13.Qa5 0-0 14.Bc5 Bd6; 9.a3 0-0 10.Nf3 Bf5 11.0-0 Qd7 12.Re1 c5 13.bc5 dc5 14.Be5 Qc6) 9...a5 (9...0-0 10.0-0 a5 11.a3 d5 12.b5 cb5 13.Bf6 Bf6 14.Qd5 c6) 10.a3 ab4 (10...0-0 11.0-0 Qc8 12.Nf4 ab4 13.ab4 Qb7 14.Rb1 Qa6) 11.ab4 Ra1 (11...Rb8 12.Na2= (12.Rb1 0-0 13.0-0 d5 14.b5 cb5) 12...0-0 13.0-0 c5 14.Bc3 Qc8) 12.Qa1 0-0 13.Qa5 (13.0-0 d5= (13...Qa8 14.Qa5 Qb7) 14.Qa5 Bd6) 13...Qc8 (13...Qa8 14.Qc7 Rc8) 14.0-0 Qb8 (14...Bf5 15.Rc1=; 14...Qb7=) 15.Nf4 (15.Ra1 Re8=) 15...Re8+= 16.Ra1 Qb7 (16...d5 17.Nd3+=) 17.Nd3+= Nd5 (17...Rb8 18.Qa6+=) 18.Qa7 Qc8 19.Qa6 (19.Nd5 cd5 20.Qa3 Bb5+=) 19...Qb8 20.Nd5 cd5 21.Qa3 Bb5 22.Nf4 c6 (22...Bc4 23.Qc3 f6 24.Nd3=) 23.Nh5 f6 24.e4 de4 25.Qg3 g6 26.Bf6 d5 27.Be5. marekt – Klaus_Behrmann, ChessWorld.net, 2003.

7.Nf3 d5+=.

7.Bc6 Bc6=+

8.Nf3 a5 9.ba5 Be7 10.0-0 =+.

8.Nf3 Be7

9.c4= 0-0 10.Nc3 (10.b5 Be4=) 10...Ne4 (10...Bf3 11.Qf3 c5 12.bc5 dc5 13.Be5=) 11.Nd5 Bd5 (11...Re8 12.Qd3 Bd5 13.cd5=) 12.cd5 Bf6 13.Rc1 c5 (13...Bd4!? 14.Qd4 Re8=) 14.dc6+/- bc6 15.Rc6 Bd4 (15...Rb8 16.Qd3 Qe8 17.b5+/-) 16.Qd4 (16.ed4? Qe8 17.Rc2 Nc3 18.Re2 Qb5-+ (18...Nd1?! 19.Re8 Rfe8 20.Kd1-+; 18...Qe2?! 19.Qe2 Ne2 20.Ke2=+; 18...Ne2?! 19.Qe2 Rb8 20.a3-+)) 16...d5 (16...Qe8 17.Rc7+/-) 17.0-0+– Qd7 (17...Rb8 18.Ra6+–) 18.Rfc1 Rac8 19.b5 a6 20.Ne5 Qf5 21.Rc8 Rc8 22.Rc8 Qc8 23.Nc6 Qf5?? (23...Kh8 24.Qd5 Nc3+–) 24.Ne7 (24…Kf8 25.Nf5 h6 26.Qg7 Ke8 27.Qg8 Kd7 28.Qf7 Kc8 29.b6 Kb8 30.Qc7 Ka8 31.Qc8) 1–0. market (2170) – Sune (1830), GameColony.com, 2002.

9.c4= a6 10.0-0 0-0 11.Nc3 b5 12.cb5 ab5 13.Qe2 =.

9.c4 a6 10.0-0 0-0 11.Nc3 Nd7 (11...b5!?=) 12.b5+= ab5 13.cb5 (worse is 13.Nb5 b6+=) 13...Bf3 14.Qf3 (worse is 14.gf3 Bf6+=) 14...Bf6 (14...b6!?+/-) 15.Qb7+– Bd4 16.ed4 Rb8 17.Qc6 Rb6 18.Qc4 Nf6 19.a4 Re8 20.a5 Rb8 21.Rfc1 Qd7 22.d5 Rec8 23.Re1 h6 24.a6 Qf5 25.Re7 Ne8 (25...Ng4 26.Re2+–) 26.Qc6 Qf6 (26...Ra8 27.Rae1 Nf6 28.Rc7 Rc7 29.Qc7+– (29.Qa8?! Kh7 30.Qd8 Rc3+/-)) 27.Rae1 Kf8 28.a7 Ra8 29.Re8! Re8 30.Re8 Re8 31.a8Q Ra8 32.Qa8 Ke7 33.Qc6 Qd4 (33...Kd8+–) 34.Qc7 Ke8 35.b6 Qd2 36.g3 (36.g3 Qe1 37.Kg2+–) 1–0. b4_player (2270) – santiago (1930), GameColony.com, 2003.

9.c4 a6 10.0-0 0-0 11.Nc3 Ne4 (11...b5 12.cb5 ab5 13.Qe2=) 12.Bg7 Kg7 13.Ne4 Be4 14.Qd4 Bf6 15.Qe4 Ba1 16.Ra1 Qf6 17.Rd1 c6 18.Qg4 Qg6 19.Qd4 Qf6 20.Qf6 Kf6 21.Rd6 Ke7 22.c5 (22.Rh6 a5 23.b5 cb5 24.cb5 Rfc8+=) 22...Rfd8 23.Rd8 Rd8 24.Nd4 Rd5 (24...a5!? 25.a3 ab4 26.ab4 Ra8+=) 25.a3+= a5 26.Kf1 ab4 27.ab4 f5 (27...Rd8 28.Ke2+=) 28.Ke2 Kf6 29.h3 Ke5 (29...f4!?+=) 30.f4+/- Ke4 31.Nf3 (31.g4 fg4 32.hg4 Rd8+/-) 31...Rd7 (31...Rd8 32.g4 fg4 33.hg4+/-) 32.g4 fg4 33.hg4 h6 34.Ne5 Rg7 35.Kf2 Kd5 (better is 35...Re7!?+=) 36.Kf3+/- Re7 (36...Rg8 37.Nf7 Kc4 38.f5+–) 37.Ke2 Ke4 (37...h5 38.Kd3 hg4 39.e4 Ke6 40.Ng4 Rd7 41.Kc3+/-) 38.Nc4+– Kd5 39.Nd6 Rh7 40.Kd3 (40.e4 Kd4 41.e5 Kc3+–) 40...Rd7 (40...Rg7!?+/-) 41.e4 Ke6 42.Ke3 Rh7 (42...b5 43.Nf5 Rd1 44.Nd4 (44.Nh6?! Re1 45.Kd3 Rf1+/-) 44...Kd7 45.e5+–) 43.f5 Ke5 44.Nc4 Kf6 45.Kf4 Rd7 46.e5 Kg7 (46...Ke7 47.Nd6 Rd8+–) 47.Nd6 Kf8 (47...Rd8 48.g5 hg5 49.Kg5 Kf8+–) 48.f6 Rd8 (48...Rc7+–) 49.e6 Rb8 50.e7 Kg8 51.e8Q Re8 52.f7 1–0. market (2285) – GMBG (1925), GameColony.com, 2002.

9.c4 b6 10.0-0 0-0 11.Nc3 Ne4 12.Bg7 Kg7 13.Ne4 Be4 14.Qd4 Bf6 15.Qe4 Ba1 16.Qg4 Kh8 17.Ra1 Qf6 18.Rd1 Rg8 19.Qd4 Qd4 20.Nd4 Rg6 21.Nb5 c6 (better is 21...Rg4!? 22.Rc1 Re4=) 22.Nd6+/- Kg7 23.e4 Kf8 24.a4 (24.f4 Re6+/-) 24...Rd8 25.e5 f6 26.f4 fe5 27.fe5 Re6 28.Rf1 Kg8 29.Rf5 c5 30.bc5 bc5 31.Ne4 Rd4 32.Nc5 Rc6 (32...Re8!?+/-) 33.e6+– Rc4?? (better is 33...Rc7+–) 34.e7 Rc8 35.Ne6 Rc1 36.Kf2 R8c2 (36...h5 37.Rf8 Kh7 38.Rc8 Rc8+–) 37.Kg3 Rc3 38.Kh4 Rc4 39.Kh5 1–0. kamret (2235) – porreta (1820), GameColony.com, 2003.

5.Bd4 d5

6.a3 Nc6 7.Bb2 a6 8.Nf3 Be7 9.Be2 0-0 10.0-0 h6 11.Nbd2 Bf5 12.c4 d4? (better 12...dc4!? 13.Nc4 b5=) 13.Nd4 Nd4 14.Bd4 b5? (14...Qd7 15.Qb3+/-) 15.c5 (15.cb5!? ab5 16.Bb5 Qd5+-) 15...Ne4 16.Ne4 Be4 17.Bf3 Qd5 18.Be4 Qe4 19.Qh5 Rad8 20.Rfd1 Rd5 21.Qf3 (21.Qe2!?+/-) 21...Qf3+= 22.gf3 Rfd8 23.f4 Bf6 24.Kf1 (better 24.Rd2!?+=) 24...Bd4=+ 25.Rd4 Rd4 26.ed4 Rd4 27.Re1 Kf8 (worse 27...Rf4 28.Re8 Kh7 29.Rc8=) 28.Re3 Rf4 29.Kg2 Rd4 30.Kg3 f6 31.Re6 (31.h4!?-/+) 31...Rd3-+ 32.Kf4 Ra3 33.Rc6 Ra4 34.Rc7 Rb4 35.Kf5 Rc4 (35...Rb2!? 36.f4 Rh2 37.Rc8 Ke7 38.Rc7 Kd8 39.Rg7-+) 36.c6 Ke8 37.Ke6 Kd8 38.Rd7 Kc8 39.Kd5 Rc1 (39...g6!? 40.Rf7 f5-/+) 40.Rg7 b4 41.Kd6 (41.Ra7 b3 42.Ra8 (42.Ra6?? Rd1 43.Kc5 b2 44.Ra8 Kc7 45.Ra7 Kd8-+) 42...Kc7 43.Ra7 (43.Ra6?? Rd1 44.Kc5 b2 45.Ra7 Kd8-+) 43...Kd8 44.Ra8 (44.Ra6 Rd1 45.Kc5 b2-+) 44...Ke7 45.Ra7 (45.Ra6 Rd1 46.Ke4 b2-+) 45...Ke8 46.Ra8 (worse 46.Ra6 b2 47.Ra8 Kf7 48.Ra7 Kf8 49.Ra8 Kg7-/+) 46...Kf7 47.Ra7 (47.Ra6 Rd1 48.Kc5 b2-+) 47...Kg6 48.Rb7= (48.Ra6 b2 49.Rb6 b1Q 50.Rb1 Rb1-+)) 41...Rd1-/+ 42.Kc5 b3 43.Kb6 (better 43.Rb7!? Rd3 44.h4-/+) 43...b2-+ 44.Rg8 Rd8 45.Rg1 Rd2?? (better 45...a5 46.Ka5 Kc7-+) 46.Rg8= Rd8 47.Rg1 Rd4?? (better 47...a5 48.Ka5 Kc7-+) 48.Rg8= Rd8 ½-½. muhammadaudii (2140) - N031105 (2130), Rated Blitz game, lichess.org, 2020.

6.b5 Bd6 7.Nf3 Be6 8.Nbd2 Nbd7 9.c4 dc4 10.Bc4 Bc4 11.Nc4 0-0 12.Nd6 cd6 13.0-0 Qe7 14.a4 Ne5 15.Ne5 de5 16.Bb2 Rfd8 17.Qe2 e4 18.Rfd1 h6 19.Rd8 Rd8 20.Rd1 Rc8 21.Bf6 Qf6 22.Qg4 Re8 23.Rd4 b6 24.h3 Qe5 25.Rd7 f5? (better 25...Re7!?=) 26.Qg6+/- Qa1 27.Kh2 Qe5 28.g3 Kh8 (28...Ra8!?+/-) 29.Ra7+- Rc8 30.Qb6 (better 30.Ra6+-) 30...Rc2= 31.Qg6 Rf2 32.Kg1 Qa1 33.Kf2 Qb2 34.Kf1 Qc1 35.Kg2 Qd2 36.Kf1 Qd1 37.Kg2 Qe2 38.Kh1 Qf1 39.Kh2 Qf2 40.Kh1 Qe1 41.Kh2 Qf2 42.Kh1 Qf1 43.Kh2 Qf2 ½-½. muhammadaudii (2150) - Jaimeesmaricon (2140), Rated Blitz game, lichess.org, 2020.

5.Bd4 Be7

6.Bb5 Bd7 7.Bd3 Bg4 8.Nf3 Bf3 9.Qf3+= Nc6 10.Bc3 d5 11.b5 Nb8 12.0-0 0-0 13.Nd2 c6 14.Rad1 Qb6? 15.a4 cb5 16.Bb5 Nbd7 17.Bd7+– Nd7 18.Qf5 Nc5 19.a5 Qb5 20.Qd5+/- Na4?? 21.Qb5+– Nc3 22.Qb7 Nd1 23.Qe7 Nc3 24.f4 Ne2 25.Kh1 Rfe8 26.Qc5 Rac8 27.Qa7 Rc2 28.Ne4 Rc1 29.Rc1 Nc1 30.Nd6 Rd8 31.Qf7 Kh8 32.Qc7 (32.Qc7 Rf8 33.Qc1 Ra8 34.a6 h6 35.Qc6 Rb8 36.Qb7 Rb7 37.ab7 Kh7 38.b8Q g6 39.Qc7 Kg8 40.Qf7 Kh8 41.Qg6 h5 42.Nf7) 1–0. bentengutama – islanderfan, net–chess.com, 2002.

6.Bb5 Bd7 7.Bd7= Qd7 8.Nf3 h6 (8...c5 9.Bc3=) 9.a3 Nc6 10.0-0 Nd4 11.ed4 0-0 (11...a5 12.Nc3=) 12.Re1 Rfe8 13.Qd3 a6 (13...a5 14.Nbd2=) 14.d5 (14.Nbd2 d5=) 14...b5 (14...Nh5 15.Nbd2=) 15.a4 Nh7? (better is 15...Nh5!? 16.ab5 Nf4=) 16.ab5+/- ab5 17.Ra8 Ra8 18.Na3 (18.Nc3 Ng5 19.Nd4 Bf6 20.Ncb5 Bd4 21.Nd4 Re8+–) 18...Rb8 (18...Ra4 19.Rb1+/-) 19.Nd4+– Ng5 (19...Nf6 20.Nc6 Re8 21.Nb5+– (21.Re7?! Re7 22.Ne7 Qe7=; 21.Qb5?! Bf8 22.Rf1 Qf5+/-)) 20.f4 (20.Nc6 Re8+–) 20...Nh7 21.Nc6 Ra8?? (better is 21...Re8+–) 22.Ne7 Qe7 (22...Kh8 23.Qb5 Qd8+–) 23.Re7 (23.Re7 Nf6 24.Nb5+–) 1–0. NN – Nuages, internet, 2002.

6.Nd2 0-0 7.a3 Nc6 8.Bb2 Bg4 9.Ngf3 Ne5 10.Be2= Nf3 11.Bf3 Bf3 12.Qf3 c6 13.c4 Re8 14.0-0 d5 15.cd5 Nd5 16.Rad1 Bf6 17.Bf6 Qf6 18.Qf6 Nf6 19.Nf3 Ne4 20.Nd4 Nc3 21.Rd2 Ne4 22.Rd3 Rad8 23.Rfd1 Nf6 24.Nf5 Rd3 25.Rd3 Nd5 26.Nd6 Rb8 27.e4 Nf4 28.Rd2 Ne6 29.g3 Kf8 30.f4 Ke7 31.Nf5 Kf8 32.Rd7+/- a6 33.Nd6+– Nd8 34.e5 b5 35.Ra7 (35.Ra7 a5 36.ba5+–) 1–0. badboy1221 – nrv, Live Game Caissa's Web, 2006.

6.Nd2 d5 7.a3 Nc6 8.Bb5 Bd7 9.Bc6 Bc6 10.Qe2 Qd7 11.Ngf3 0-0 12.Ne5 Qd6 13.0-0-0 (13.c4!?=) 13...a5 14.b5 Qa3 (14...Be8 15.Nb1+=) 15.Bb2= (15.Bb2 Qd6 16.bc6 bc6 17.g4=). mtr – ajc349, internet, 2001.

6.Nf3 Nc6 7.Bc3 a6 8.Bd3 0-0 9.0-0 Be6 10.a3 Nd5 11.Be4 Nc3 12.Nc3 Bf6 13.Qe1 Bc4 14.Bd3 Be6 15.Rd1 Ne5 16.Ne5 Be5 (16...de5? 17.Bh7 Kh7 18.Rd8 Rad8 19.Qe2+–) 17.f4 Bc3 18.Qc3 Rc8 19.f5 Bd7 20.f6 Re8 21.Qd4 Re6 22.fg7 Rh6 23.Bc4 Be6 24.Bd5 b6 25.Be6 Re6 26.Rf5 Rg6 27.Rf7 Qg5 28.Rf2 Rg7 29.Qc4 Kh8 30.Rd6 Qe3 31.Rd3 (31.Qa6?? Rcg8 32.Qf1 Rg2 33.Qg2 Qc1 34.Rf1 Rg2 35.Kg2 Qc2 36.Kg3 cd6 37.Rf8 Kg7-+) 31...Qc1 32.Rf1 Qg5 33.Rg3 Qh6 (33...Qb5 34.Qc3 Qd7 35.Rgf3+–) 34.Rg7 Qg7 35.Qa6 Rg8 36.Qe2 Qd4 37.Kh1 (37.Kh1 Qc3 38.Qe4+–) 1–0. b4_player (2245) – paddestoel, GameColony.com, 2003.

6.Nf3 Bg4 7.h3 Bf3 8.Qf3 c6 9.Be2 Nbd7 10.0-0 Qc7 11.Nc3 0-0 12.Qg3 g6 13.Rad1 a6 14.e4 Rac8 15.a4 d5 16.e5 Ne4 17.Ne4 de4 18.Bg4 Rfd8 19.e6 Bd6? 20.ed7+– Bg3 21.dc8Q Rc8 22.Bc8 Bf2?? 23.Kf2 Qc8 24.Bf6 (24...b5 25.ab5 ab5 26.Ke3+–) 1–0. weBNimzo (2145) – Melinka (1915), ChessWorld.net, 2003.

6.h3 Nbd7 7.Nf3= 0-0 8.Bd3 Ne8 9.c4 Ndf6 10.0-0+= g6 11.Re1 Ng7 12.Nbd2 Ne6 13.Nb3 1–0. gtate (1955) – alexp (2235), net–chess.com, 2005.

6.b5 0-0

7.Bd3 c5 (7...a6!?–/+) 8.Bb2+= Nbd7 (8...Be6 9.Nf3–/+) 9.Nf3 Qc7 10.Nbd2 Ne5 11.Be2 (11.Ne5 de5 12.Qe2 Rd8+=) 11...b6 (11...Bf5 12.0-0+=) 12.Nc4 (12.Ne5 de5 13.Bf3 Bb7 14.Bb7 Qb7=) 12...Nc4+= 13.Bc4 Bb7 14.0-0 Rad8 15.Qe2 (15.h4 d5 16.Be5 Qd7+=) 15...d5 16.Bd3 Ne4 (16...c4 17.Bf5 c3 18.Bc1+=) 17.c4 f5 18.Be5 (18.cd5 Bd5 (worse is 18...Rd5 19.Bc4 Nd6 20.Be5+/-) 19.Bc4 Bf6 20.Bf6 Rf6=) 18...Bd6 19.Bd6 Rd6 20.cd5 Bd5 (worse is 20...Rd5 21.Bc4+/-) 21.Bc4 (21.Ne5 Qe7 22.f4 Rfd8+=) 21...Bc4 (21...Rfd8 22.Ne5–/+) 22.Qc4+= Qf7 23.Ne5 Qc4 24.Nc4 Rd5 25.f3 Nc3 (25...Nd2 26.Rad1 Rfd8 27.Rd2 Rd2 28.Nd2 Rd2 29.Rf2 Rd1 30.Rf1–/+) 26.a4 Rfd8 (26...Rd3 27.Rfe1+=) 27.Ra3 Rd3 28.Kf2? (better is 28.Rfa1+=) 28...Nd1-+ 29.Ke2 Ra3 30.Na3 Nc3 31.Kf2 Na4 32.Rc1 Kf7 (better is 32...Rd3!? 33.Nc4 Nc3-+) 33.Ke2–/+ Ke7 34.Rc2 Rd5 (34...Kf6 35.Nc4–/+) 35.Nc4 (35.Nb1 c4 36.Rc4 Nc5=) 35...Kd7 (better is 35...Ke6!?–/+) 36.Ke1 Ke6 37.Ra2 Nc3 38.Ra7 Rd7 39.Rd7 Kd7 40.Nb6 Kc7 41.Nc4 Nb5 42.Kd2 Kc6 43.Kd3 Nd6 44.Ne5 Kd5 45.f4 (45.Nd7 h6=) 45...c4+= 46.Kc3 Ke4 47.Nc4?? (better is 47.Kd2+=) 47...Nc4-+ 48.Kc4 Ke3 49.Kc3 h5 0–1. Giralt Toro,Julio (1820) – Miquel Rodriguez,Francesco (1985), Barcelona ESP, Vila de Gracia Open (s), 2014.

7.Nf3 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 Bf5 11.Bd3 Bg4 12.Be2 Nbd7 13.0-0 Qa8 14.Nbd2 Nc5 15.Nd4 Bd7 16.c4 d5 17.Qc2 dc4 18.Bc4 Rd8 19.N2f3 Be8? (better 19...Nfe4+=) 20.Nf5+- Bf8 (better 20...Bd6+-) 21.Ne5?? (better 21.Nh6! gh6 22.Bf6+-) 21...Qa5 Attacking the isolated pawn on b5 22.Bc3 Qa8 23.Bb4 b6 24.Nd4 Bd6 25.Nec6 Bc6 26.Nc6 Rf8 27.Bc5 Bc5 28.Rd1 h6 29.h3 Re8 (better 29...Bd6!?+/-) 30.Qb3+- Rf8 31.g3 (31.Bf7 Kh8+-) 31...Qc8? (31...Bd6 32.Rd4+/-) 32.Kg2 (better 32.Ne5!? Qe8 33.Ng6+-) 32...Qf5+/- 33.Bd3 (33.Bf7 Kh7 34.Qe6 Qe4 35.Qe4 Ne4+/-) 33...Qh5 34.g4 (better 34.Qc2+/-) 34...Qh4? (better 34...Qg5+=) 35.Ne5+- Nh7 36.Ng6 Qd8 37.Nf8 Qf8 (37...Qa8 38.Kg1 Ng5 39.Nd7 Nh3 40.Kf1 Qh1 41.Ke2+-) 38.Bh7 Kh7 39.Qd3 g6 40.Qd7 (40.Qd8!? Qd8 41.Rd8 Kg7+-) 40...Bd6 41.e4 Qa8?? (better 41...Kg7+-) 42.f3 (better 42.Qf7 Kh8 43.Qg6+-) 42...Qa2+= 43.Kf1 Qc4 44.Kg1 Qc5 45.Kf1 Qc4 46.Kg1 Kg7 47.Qc6 (47.Rd6 cd6 48.Qd6 Qb5 49.Qd4 f6=) 47...Qe2 (47...Bc5 48.Kh1 Qe2-+) 48.Rf1?? (better 48.Rd6 Qe1 49.Kg2 Qe2 50.Kg3 Qe1 51.Kf4 cd6 52.Qd6 (52.Qb6?? g5 53.Kf5 Qd2 54.Qd6 Qd6 55.b6 Qf4) 52...Qc1 53.Ke5 Qb2 54.Kd5 Qb5 55.Kd4=) 48…Qh2 0-1. muhammadaudii (2150) - odyai_Razzouk (2110), lichess.org, 2020.

7.Nf3 c5 8.Bb2 Bd7 9.a4 a6 10.c4 Ne4 11.Nc3 (better 11.Qd5!? Bf6 12.Qe4 Bb2 13.Ra2 Qa5 14.Nfd2=) 11...Qa5=+ 12.Qc2 Nf6 (better 12...Bf6 13.Ra3 Qb4-/+) 13.Bd3+= h6 14.0-0 Qd8 15.Ne4 ab5 (15...Be6 16.Rfd1+/-) 16.ab5 ½-½. muhammadaudii (2120) - ManaaR (2110), lichess.org, 2020.

7.Nf3 c5 8.bc6 Nc6 9.Be2 Nd4 10.Nd4 Bd7 11.0-0 Rc8 12.c4 d5 13.cd5 Nd5 14.Nd2 (14.Qb3 Bc6=) 14...Re8 (14...Nc3 15.Qe1=+) 15.N2f3 Nc3 16.Qe1 Ne2 17.Qe2 Bf6 18.Rfd1 Qe7 19.Qd2 g6 (19...Bg4 20.Rab1=+) 20.Rac1 Kg7 21.Rc8 Bc8 22.Rb1 Rd8 23.Qb4 Qb4 24.Rb4 Rd6 25.h3 Ra6 26.a4 Bd7 (26...b6 27.Nb5 Bd7 28.Nfd4=) 27.Rb7 Ba4 28.g3 Bd1 29.Kg2 Bf3 30.Nf3 Ra2 31.Nd4 Bd4 32.ed4 a5 33.d5 Kf6 34.d6 a4 35.d7 Rd2 36.Ra7 a3 37.Ra3 Rd7 ½-½. muhammadaudii (2145) - lusail (2430), Black Lives Matter, lichess.org. 2020.

7.Nf3 Nbd7 8.Bd3 c6 9.0-0 c5 10.Bc3 Nb6 11.a4 Nbd5 12.Bb2 Bg4 13.h3 Bh5? ( 13...Be6+=) 14.g4+– Bg6 15.Bf6?? ( 15.Bg6 fg6 16.g5+–) 15...Bf6= 16.Ra3 Nb4?? ( 16...Nc7=) 17.Bg6+– hg6 18.c3 (18…a5 19.cb4 ab4 20.Rd3+–) 1–0. guest88 – guest1692, ICC, 2003.

6.Bb5 c6

7.Bd3 0-0 8.Nf3 c5 9.Bc3 =.

7.Bd3 0-0 8.Nf3 d5 9.a3 a5 10.c3 ab4 11.cb4 b6 12.Qc2 Bb7 13.0-0 h6 14.Rd1 Nbd7 15.Nbd2 c5 16.Bc3 Re8 17.bc5 bc5 18.a4 Rc8 (18...Ba6!?+=) 19.a5+/- d4 20.ed4 cd4 21.Nd4 Ne5 22.Bc4?? (better is 22.a6 Ba8 23.Bf5+–) 22...Nc4-+ (worse is 22...Rc4 23.Nc4 Nc4 24.Nc6+=) 0–1. mrkt (2230) – DuongThanh (2155), ICC, 2003.

7.Bd3 0-0 8.Nf3 d5 9.c3 Bg4 10.h3 Bh5 11.0-0 Nbd7 12.Nbd2 Qc7 13.Qc2 Bg6 14.Bg6 hg6 (14...fg6 15.Rfe1=) 15.a3 Bd6 (15...a5 16.b5+=) 16.c4 dc4 (16...a5 17.c5 Be7 18.Rfd1+/-) 17.Nc4+/- Rae8 (17...Be7 18.Rfd1+/-) 18.Nd6 Qd6 19.Rfd1 Qe6 (19...Qc7 20.Rac1+/- (20.Ba7?! b6=)) 20.Ba7+– Ne4 21.Bd4 Ndf6 22.Rac1 g5 (22...Re7 23.Rd3+–) 23.Bc5 g4 (23...Nc5 24.Ng5 Qb3 25.bc5 Re3 26.fe3 Qe3 27.Kh1 Qg5 28.Rb1+–) 24.Nd4 (24.Bf8 gf3 25.Bc5 fg2 26.Kg2 Ng5+=) 24...Qc8 (24...Qe5 25.Bf8 Kf8 26.h4+–) 25.Bf8 gh3 (25...Kf8 26.b5 c5 27.h4+–) 26.f3 hg2 (26...Kf8 27.fe4 Qg4+–) 27.Bg7! (worse is 27.fe4 Kf8 28.Qg2 Re4+–) 27...Qh3 (27...Kg7 Decoy theme: g7 28.Qg2) 28.Qg2 (28.Qg2 Qg2 29.Kg2 Kg7 30.Nf5 Kg6 31.fe4 Ne4 32.Nd6 Nd6 33.Rd6 Kg7 34.Kf3+–) 1–0. kamret (2085) – Piquant (1805), GameColony.com, 2002.

7.Bd3 0-0 8.Nf3 Bg4 9.a3 Nbd7 10.0-0 Ne5 11.Be2 Nf3 12.Bf3 Bf5 13.c4 d5 14.cd5 cd5 (14...Nd5? 15.e4 Be4 16.Be4+–) 15.Nc3 Rc8 16.Qb3 Be4 17.Be2 (17.Ba7?! Bf3 18.gf3 b6=) 17...a6 18.Rfd1 Re8 19.Rac1 Qd6 20.Bf6 Qf6 21.Nd5 Bd5 22.Rc8 Bb3 23.Re8 Bf8 24.Rdd8 g6 (better is 24...Qa1!? 25.Bf1 h5 26.Rf8 Kh7 27.Rh8 Kg6 28.Rd6 f6+/-) 25.Rf8+– Kg7 26.Rg8 Kh6 27.Rd4 Qc6 28.Rh4 Kg5 29.Rh5 Kf6 30.Rc5 Qe4 31.Rgc8 Qb1 32.Rc1 Qb2 33.Bf3 b5 34.R8c3 Bc4 35.Bb7 Qd2?? (better is 35...Bb3 36.h4 h6=) 36.Ba6+– Qd6 37.Bb7 (37.Rc4?! bc4 38.Bc4 Qd2+/-) 37...Qd7 38.Bf3 h5 (38...Qe7 39.h4+–) 39.a4 Kg7 40.a5 Kh6 41.a6 Qa7 42.Ra3 g5 (42...Kh7 43.Rd1 Kh6 44.Bc6+–) 43.Rd1 g4 44.Bd5 f5 (44...Bd5 45.Rd5 Kg6 46.Rb5+–) 45.Bc4 bc4 46.b5 h4 (46...g3 47.hg3 Qc5+–) 47.b6! Qb6 (47...Qe7 48.Ra2 Qe4 49.a7+–) 1–0. marekt (2475) – chessH, ChessWorld.net, 2003.

7.Bd3 c5 8.Bc3 =.

7.Bd3 d5 8.a3 0-0 9.Nf3 Bg4 10.h3 Bh5 11.0-0 Nbd7 12.Nbd2 c5 13.bc5 Nc5 14.Bf5 Nce4 15.Qb1 b6 16.c4 Nd2 (16...Nd6 17.Rd1=) 17.Nd2+= Be2 18.Rc1 dc4 (18...Re8 19.cd5 g6 20.Bc2 Nd5 21.Ba4+/-) 19.Nc4+/- h6 (19...g6 20.Ne5 Bc5 21.Qc2 Bd4 22.Nc6+=) 20.Qb2 (20.Ne5 Ba6+/-) 20...Qd5 (20...Bc4!? 21.Rc4 Qd5+/-) 21.e4!+– (21.Qe2?! Qf5 22.Ne5 Ne4=) 21...Ne4? (21...Qe4 22.Be4) 22.Ne3 Qb5 23.Be4 Qb2 24.Bb2 Bc5 (24...Rae8 25.Re1 Bg5+–) 25.Ba8 (25…Ra8 26.Nf5+–) 1–0. themonkey (2150) – Tipe (2000), GameColony.com, 2003.

6.Nf3 0-0

7.b5 c6 8.a4 Nbd7 9.Be2 c5 10.Bb2 Re8 11.0-0 Nf8 12.c4 Ng6 13.Nc3 Be6 14.Nd5 Qd7 (14...Nd5!? 15.cd5 Bg4+=) 15.Ne7 Qe7 16.Ng5 (16.Bf6 Qf6 17.Qd6 Qb2+/-) 16...h6 17.Ne6 Qe6 18.h3 Rad8 19.Qc2 Ne5 20.a5 d5 21.cd5 Rd5 22.e4 Rd7 (22...Rdd8 23.Rfd1+=) 23.Qc5 (23.f4 Ng6 A) 24.Qc5?! Rd2 (worse 24...Qe4 25.Bf3 Qe7 26.Qe7 Ree7 27.Bf6 gf6 28.g3+/-; 24...Ne4?! 25.Qe3 Qe7 26.Qa7=) 25.f5 Qe4 26.fg6 Qg6=; B) 24.b6+/-) 23...Rd2= 24.Be5 Qe5 25.Qe5 Re5 26.Bf3 Rb5 27.Rfc1 Rbb2 28.Rc8 Kh7 29.Rc7 Rf2? (better 29...Rd7 30.Rac1 Rb1+=) 30.e5+- Ne8 (30...Ng8 31.Rf7 (31.Rb7?! Rb7 32.Bb7 Re2=) 31...Kg6 32.Bh5 Kh5 33.Rf2+-) 31.Rf7 (better 31.Re7 Kg6 32.Re8+-) 31...Rfc2?? (better 31...Kg8 32.Rd7 Kf8+-) 32.Re7 (32.Rb7?! Rb7 33.Be4 Kg8 34.Bc2 Rb5+/-; 32.Bb7?! Rc7 33.Be4 Kg8 34.Rc7 Nc7+-) 32...Nc7 33.Be4 Kg8 34.Bc2 Rc2 35.Rb1 (35.Rd1 Rc6+-) 35...Nd5 (35...b6 36.Rd1 Kf8 37.Rdd7+-) 36.Reb7 Nf4 (36...a6 37.e6 Ra2 38.Re1 Ra5 39.Rd7+-) 37.R1b2 (37.Rf1!? Ne6 38.Ra7 Ra2+-) 37...Rc5 38.Ra7 Re5 39.a6 Nd5 (39...Ra5+-) 40.Ra8 Kh7 41.a7 Nc7 (41...Re1 42.Kh2 Ra1+-) 42.Rc8 Re7 43.Rc7! Rc7 (43...Rc7 44.a8Q Combination) 44.a8Q Rc1 45.Kh2 Re1 46.Qa5 Re6 47.Qf5 Rg6 48.Rb6 h5 (48...Kg8 49.Qg6 Kf8 50.Re6 h5 51.Qe8) 49.Qg6 (49.Qg6 Kg8 50.Rb8) 1-0. muhammadaudii (2140) - belal1980 (2035), lichess.org, 2020.

7.b5 c6 8.c4 c5 9.Bc3 Bg4 10.Bd3 Nbd7 11.0-0 Ne5 12.Be2 Nf3 (12...Qc7 13.Nbd2=) 13.Bf3+= Bf3 (13...Be6 14.Qe2 Qc7 15.Rd1+=) 14.Qf3 (< 14.gf3 d5=+) 14...d5 (14...Qd7 15.Rd1+=) 15.Rd1+/- Ne4? ( 15...Qb6!? 16.cd5 Qb5+/-) 16.Rd5+– (16.cd5?! f5+/-) 16...Nd6 17.Rc5 Qd7 (17...Rc8 18.Qg4 f6 19.Qe6 Nf7 20.Rd5+–) 18.Nd2 Rac8 19.Rd5 Qe6 20.Rd1 (20.Re5!? Qf6 21.Qg4 Qh4+–) 20...Nc4 21.Nc4 Rc4 22.R5d3 Rc5? ( 22...b6+/-) 23.Qb7+– Qa2 (23...Rcc8+–) 24.Qe7 (24...Rcc8 25.e4+–) 1–0. kamret (2195) – ToreyeX, GameColony.com, 2003.

7.Bd3 Nc6 8.Bc3 Bg4 9.h3 Bh5 (9...Be6!?=) 10.g4+= Bg6 11.Bg6 hg6 12.b5 Nb8 13.h4 Ng4 14.h5 Bf6 (14...gh5!? 15.Qd5 g6 16.Qb7 Nd7=) 15.hg6+/- Bc3 16.Nc3 Qf6?? ( 16...c6+–) 17.Nd5 Qd8 18.Qd4 f5 (18...Ne5 19.Ne5 de5 20.Qe5 fg6 21.Ne7 Kf7+–) 19.Qc4 Rf7 20.gf7 Kf7 21.Ng5! Qg5 22.Nf4 1–0. mrkt – fajeknove, ChessWorld.net, 2003.

7.Bd3 Bg4 8.a3 c5 (8...Nc6 9.h3 Bh5 10.0-0=) 9.Bb2 (9.Bc3 d5=) 9...Nc6 10.c3 (10.h3 Bf3 11.Qf3 cb4+=) 10...a5 (10...d5 11.h3 Bf3 12.gf3–/+) 11.Nbd2 (11.0-0 ab4 12.ab4 Ra1 13.Ba1 cb4+=) 11...ab4 12.cb4 (12.ab4 Ra1 13.Qa1 Ne5+=) 12...cb4 13.a4 Ne5 14.Bc2 (14.Be2 Qa5+=) 14...Qa5–/+ 15.0-0 (15.Be5 de5 16.Nc4 Qa7 17.Nce5 b3 18.Bb3 Bb4 19.Kf1 Bc3 20.Ng4 Ba1 21.Nh6 gh6 22.Qa1 Qa6 23.Ke1 b5–/+) 15...Qd5 (15...Rfc8 16.Bb3–/+) 16.Bb3 (16.e4 Bf3 17.Nf3 Qd1 18.Rfd1+= (worse is 18.Bd1 Ne4 19.Ne5 de5–/+)) 16...Qc6 (16...Bf3 17.Qe1 Qd3 18.Be5 Bg2 19.Kg2 de5 20.e4-+) 17.Rc1 (17.Ne5 de5 18.f3 Be6 19.Be5 Nd5=) 17...Qa6 18.Be5 (18.h3 Nf3 19.Nf3 Be6+=) 18...de5–/+ 19.Qc2 Rac8 20.Qb2 e4 21.Nd4 (21.Rc8 Rc8 22.Ng5 b5=) 21...Rfd8+= 22.Bc2 Be2 23.Rfe1 Bd3 24.Bb3 (24.Bd3 ed3 25.Rc8 Rc8–/+) 24...Nd7 (24...b5 25.a5–/+) 25.Qa2 (25.Bc2 Nc5 26.Qb4 Qf6+=) 25...Qf6 26.Nc4 (26.Bc2 Nc5–/+) 26...Bc4 (26...Nc5 27.Nb2-+) 27.Bc4 (27.Rc4 Rc4 28.Bc4 Ne5–/+) 27...Nc5 (27...Bd6 28.Qb3–/+) 28.Red1 Nd3 (28...Bd6 29.Rb1–/+) 29.Rc2 Nc5 (29...Ne5 30.Qb3–/+) 30.Rcd2 (better is 30.Rcc1!?=) 30...Ra8–/+ 31.Bb5 (31.Bb3 b6–/+) 31...Ra7 (31...Bd6 32.Qc2–/+) 32.Nf5 (32.Qc2 Qh4+=) 32...Rd2 33.Ne7 Qe7 34.Qd2 Ne6 (34...b3 35.Qd8 Qf8 36.a5+=) 35.Rb1 (35.Qb2 b6=) 35...Nc7 36.Qb4 (36.Bd7 Na6=) 36...Qb4 37.Rb4 Nb5 38.Rb5 Ra4 39.g3 (39.f3 Ra7+=) 39...Ra7 40.Re5 b6?? (better is 40...f5+=) 41.Re8 1–0. Fournier,Frederic – Delanzy,Eric, Senlis, 1994.

7.Bd3 Bg4 8.h3 Bf3 9.Qf3 c6 10.0-0 Nbd7 11.Rd1 Ne5? ( 11...d5+=) 12.Be5+– de5 13.Bh7! (13...Kh7 14.Rd8 Rad8 15.Nc3+–) 1–0. mrkt (2475) – tasa, ChessWorld.net, 2003.

7.Bd3 Bg4 8.h3 Bh5 9.g4 Bg6 10.Bg6 hg6 11.a3 Nc6 12.Bb2 Qd7 (12...Ne4 13.Nbd2 Nd2 14.Kd2=) 13.g5+= Nh5 14.Nc3 Qf5 15.e4 Qf4?? (better is 15...Qe6+=) 16.Bc1+– (16.Bc1 Bf6 17.Bf4 (17.gf6?! Qf6 18.Qd3 Rfe8+–) 17...Bc3 18.Bd2 Ba1 19.Qa1+–) 1–0. marekt (2425) – adp (1755), ChessWorld.net, 2003.

4.d4 Bd7

5.a3 a5 6.b5 e4 7.d5 Be7 8.Bc4 =.

5.a3 a6 6.de5+= c5?? (better is 6...de5 7.Be5 c5+=) 7.ef6+– (7.ef6 gf6 8.Nc3 cb4 9.Nd5+–) 1–0. kamret (2145) – antek (1725), GameColony.com, 2003.

5.a3 e4 6.d5 Be7 7.Nc3 a5 8.Nge2 =.

5.b5 e4 6.d5 Be7 7.Nc3 a6 8.Nge2 =.

5.b5 Qe7 6.de5 de5 7.Nf3 e4 8.Ne5 =.

5.c4 ed4 6.Bd4 Nc6 7.Bc3 Ne4 8.Nf3 =.

5.c4 Be7 6.b5 e4 7.Nd2 c6 8.bc6.

4.d4 Nbd7

5.a3 a5 6.b5=+ Be7 7.de5 de5 8.Be2 =+.

5.a3 e4 6.d5 Be7 7.Ne2 Nb6 8.Nec3 =.

5.a3 Be7 6.c4 0-0 7.Nf3 a5 8.b5 =.

5.Bc4 Be7 6.Nd2 (6.de5 de5 7.a3 0-0+=) 6...0-0 7.de5 de5 8.Ngf3 (8.a3 e4+=) 8...e4 (8...Bb4 9.Ne5 Ne5 10.Be5+=) 9.Ng5+= Bb4 10.c3 Be7 (10...Bc5 11.Bb3+=) 11.Nge4 (11.Bf7 Rf7 12.Ne6–/+) 11...Ne5+= 12.Nf6 Bf6 13.0-0 Bf5 14.Be2 Qe7 15.e4 Be6 16.f4 (16.Qc2 Rad8+=) 16...Qc5 (16...Rfd8!?–/+) 17.Kh1= Nc4 18.Nc4 Bc4 19.e5 Rfd8 20.Qc2 Be7 (20...Be2 21.Qe2 Be7 22.f5=) 21.Ba3+= Qa3 22.Bc4 Rf8 (22...c6 23.Rad1+=) 23.Rab1 Qc5 (23...Rab8 24.Rfd1+=) 24.Qe4 White plans e6 (24.Bd3!? Kh8 25.Bh7+– (25.Rb7?! Rab8 26.Rb8 Rb8+/-)) 24...Rab8 25.Bd3 g6 26.f5 Qc6 (26...Qc3 27.e6 (worse is 27.fg6 fg6 28.Rfc1 Qa5+=) 27...Kh8 28.ef7 (28.fg6?! fg6 29.Rf7 Rf7 30.ef7 Qf6=) 28...Rf7 29.fg6+–) 27.Qe3 (27.fg6 fg6 28.Qc6 bc6 29.Rb8 Rb8 30.Bc4 Kg7 31.Rf7 Kh6+/-) 27...Rfd8 (better is 27...Bc5!? 28.Qh6 Kh8+/-) 28.e6+– (28.Qa7 Bc5 (28...Qc3?! 29.Be4=) 29.Be4 Ba7 30.Bc6 bc6-+) 28...Bf8 (better is 28...Qc3 29.ef7 Kf8 30.fg6 hg6+–) 29.ef7 Kg7 30.fg6 Qc3 31.Rb3 Qd4 32.Qd4 Rd4 33.gh7 Bd6 34.Bc2 Rd2 (34...Rh4 35.Rb5 c5 36.g3+–) 35.Bb1 (better is 35.f8Q Rf8 36.Rf8 Rd1 37.Bd1 Bf8 38.Bc2+–) 35...Rf8 (35...a6 36.Re3 Rh8 37.Re4+–) 36.Rh3 (36.Rb5!? Be7 37.Rb7 Rf7 38.Rf7 Kf7+–) 36...Kh8 37.Rhf3 Kg7?? (37...Be5+–) 38.Rf6 Kh8 (38...Be7 39.Rg6 Kh7 40.Re6 Kg7 41.Re7 c5+–) 39.Rg6 Kh7 40.Rd6 1–0. Grabowski,Marian (1800) – Buczek,Stanislaw (2095), Malbork–ch, 2000.

5.Nd2 ed4 6.ed4 d5 (6...Be7 7.Bd3 (7.Be2 d5 8.b5 a6 9.ba6 b6 10.Ngf3+=) 7...Nd5 8.a3 Nf4 9.Be4 Nf6 10.Qf3=) 7.c3 (7.b5 Qe7 8.Qe2 Nb6 9.a4 Bf5 10.a5=) 7...Bd6 8.Be2 0-0 (8...a5 9.b5 0-0 10.Ngf3+=) 9.a4 (9.Ngf3 Re8 (9...Nb6+= 10.0-0+=) 10.0-0+=) 9...Re8–/+ 10.h4 (10.a5–/+) 10...Nh5 11.Ndf3 (11.g3 a5–/+) 11...Nf4-+ 12.Kf1 Ne2 13.Ne2 Nb6 14.a5 Nc4 15.Bc1 Bg4 16.Nf4 Qd7 0–1. Jacewicz,Grzegorz – Dopper,Johan, corr 3GMMsemi–06, 1998.

5.Nd2 e4 6.c4= Be7 7.a3 a5 8.ba5 =.

5.Nd2 g6 6.e4 Bg7 7.Ngf3 0-0 8.de5 Ng4 9.Bb5 Nde5 10.Ne5 Ne5 11.0-0 Qh4 12.f4 Ng4 13.Nf3 Qh5 14.Bg7 Kg7 15.Qd3 c6 16.Qd4 Kg8 17.Bd3 d5 18.h3 Nh6 19.ed5 cd5 (19...Qd5!? 20.Qd5 cd5+/-) 20.Rae1 Nf5 21.Qd5 Be6 22.Qb7 Ng3 23.Rf2 Rab8 (23...Rfb8 24.Qc6+–) 24.Qa7 Rb4 (24...Qh6 25.c3+–) 25.Kh2 Nf5 26.g4 Qh6 27.gf5 Qf4 28.Kg2 Bd5 29.a3 Qf5 (29...Ra4 30.Qe7 Rfa8+–) 30.Bf5 (30.Bf5 Rf4 31.Bd3+–) 1–0. b4_player (2230) – avargas (1965), GameColony.com, 2003.

5.Nf3 e4 6.Nfd2 d5 7.a3 (7.b5 Nb6 8.c4 dc4 9.Qc2 Bf5 10.Nc4+=) 7...Nb6 (7...Bd6 8.c4 c6 9.Nc3 0-0 10.Be2=) 8.c4 Bd7 (8...Bg4 9.Qc2 c6 10.Nc3=) 9.Nc3 c6 (9...dc4 10.Nc4=) 10.c5 Nc8 11.Be2 g6 12.0-0 Ne7 13.b5 Bh6 14.Nb3 0-0 15.Qd2 Qc7 16.a4 Ng4 17.Bg4 Bg4 18.f3 (18.h3!? Bf5 19.Qe2=) 18...ef3+= 19.gf3 Bh3 20.Rfe1 Rae8 21.Qf2 Be6 22.Nc1 f6 23.Nd3 Bf5 (23...Qd7 24.Bc1=) 24.e4+= de4 25.fe4 Be6 26.Bc1 Bc1 27.Rac1 Qd7 28.Nf4 Bf7 29.Rcd1 g5 30.Ng2 Bh5 31.Rd2 Ng6 32.Rf1 Ne7 33.Ne3 Kg7 (33...Bg6 34.Qg3+/-) 34.d5+– cd5 35.ed5 (35.Ned5?! Qg4 36.Qg3 Rf7+/-) 35...Bg6 36.d6 Ng8 37.Ned5 Qg4 38.Kh1 Be4 39.Ne4 Qe4 40.Qg2 Qa4 41.Nc7 Re4 42.Re2 Re2 43.Qe2 Rf7 44.Ne6 Kh6 45.Rf3 Qg4 (45...Qa1 46.Kg2 a6+–) 46.c6 bc6 47.bc6 Qb4 48.d7 g4 (48...Qb1 49.Qf1 Qe4 50.Qh3 Kg6 51.d8Q+–) 49.Rf1 (better is 49.d8Q Qb1 50.Rf1+–) 49...Qd6 50.d8Q Qc6 51.Kg1 1–0. Zalys,Ignas – Morin,Louis, Montreal, 1983.

5.Nf3 Be7 6.de5 Ne5 (6...de5 7.Be5 Bb4 8.Bc3=) 7.Ne5 de5 8.Qd8 Bd8 (better 8...Kd8!? 9.Be5 Bb4 10.c3 Be7=) 9.Be5+/- 0-0 10.Nd2 Re8 11.Bd4 Bf5 12.Bd3 (12.c3 a5+/-) 12...Bd3+= 13.cd3 Nd5 14.a3 b6 (14...Nf4!+=) 15.0-0 Be7 16.Rfc1 Rac8 17.Ra2 c5 (17...a6 18.Rac2+-) 18.Rac2 (18.bc5 bc5 19.Rac2 Red8 20.Bc5 Rc5 21.Rc5 Bc5 22.Rc5 Kf8+-) 18...cd4? (better 18...Rcd8 19.bc5 Nf4 20.ef4 Rd4 21.cb6 ab6+/-) 19.Rc8 Rc8 (19...Kf8 20.ed4 Bg5 21.Re8 Ke8 22.Re1 Be7 23.Nc4+-) 20.Rc8 Bf8 21.ed4 Nf4 22.Kf1 Nd3 (22...g6 23.Ra8 a5 24.ba5 ba5 25.Ra5 Nd3 26.Nc4+-) 23.Ra8 (23.d5 g5 24.d6 Ne5+-) 23...a5 (23...Nf4 24.Ra7 Ne6 25.Nb3+-) 24.ba5 (24.Nc4!? g6 25.Nb6 ab4+-) 24...ba5 25.Ra5 Nf4 (25...g6 26.d5+-) 26.d5 Ng6 (26...f6 27.Nc4 Kf7 28.Ra7 Kg6 29.d6+-) 27.Nc4 Nf4 28.d6 Ne6 29.d7 Be7 (29...f6 30.Ra6 Nd8 31.Ra8+-) 30.Ra8 Nd8 31.Ne5 h6 (31...Kf8 32.Nc6 f5 33.a4+-) 32.Nc6 Kh7 (32...Kf8 33.a4 g5+-) 33.Rd8 Bd8 34.Nd8 Kg8 35.Nc6 Kf8 (35...f6 36.d8Q Kf7 37.Qd5 Kf8 38.Qe6 g5 39.Qf6 Kg8 40.Ne7 Kh7 41.Qf7 Kh8 42.Ng6) 36.d8Q 1-0. WG_Anonymous – Anonymous, lichess.org, 2021.

5.Nc3 g6

6.Nf3 c6 7.Bd3 Bg7 (7...e4 8.Ne4 (8.Be4 d5 9.Bd3 Bb4 10.0-0 0-0 11.a3 Bd6=) 8...Ne4 9.Be4 d5 10.Bd3 Bb4 11.c3 Bd6+=; 7...Qe7 8.de5 Ne5 9.0-0 Bg4 10.Be2 Bg7 11.b5 Rd8=) 8.0-0 (8.a3 Qe7 (8...ed4 9.Nd4 Ne5 10.0-0 0-0 11.Be2 Re8=; 8...0-0 9.0-0 Re8 10.de5 Ne5 11.Ne5 de5=) 9.e4 ed4 10.Nd4 0-0 11.0-0 Ne5=; 8.de5 Ne5 9.Ne5 de5 10.0-0 Bg4 11.Qe1 Qe7=) 8...0-0 (8...ed4 9.ed4 0-0 10.Re1 d5 11.b5 a6+=) 9.a4 (9.a3 Re8 10.de5 Ne5 11.Ne5 de5=) 9...Re8 (9...Qe7 10.Be2 e4 11.Nd2 Re8=) 10.de5 de5 (10...Ne5 11.Ne5 de5=) 11.e4 Qb6 (11...a5=) 12.Ba3 a5 13.b5 cb5 14.Bb5 Rd8? (better is 14...Qc7 15.Qd3 Bf8+=) 15.Be7+– 1–0. vik – git, internet, 2001.

6.Nf3 e4 7.Ng5 (7.Nd2 d5 8.a3 c6 (8...a5= 9.b5 Bd6 10.Na4=) 9.Be2 Bd6 10.0-0=) 7...d5–/+ 8.a3 Bg7 (8...Nb6 9.h4 h6 10.Nh3–/+) 9.Be2 (9.Nh3 Nb6 10.Nf4+=) 9...0-0 (9...Nb6 10.h4+=) 10.0-0 Nb6 11.a4 h6 (11...Ne8 12.h4 Nd6 13.Nb5 Nb5 14.Bb5–/+) 12.a5= hg5 13.ab6 cb6 14.f3 Bf5 15.fe4 Ne4 16.Ne4 Be4 17.Bd3 Bd3 18.Qd3 Re8 19.Qb3 b5 20.Rf3 a6 21.Raf1 f6 22.Qd3 Re4 23.Rh3 Qe7 24.Qb3 Qd6 25.Kh1 (better is 25.Rhf3!?–/+) 25...Rae8 26.Rf2 Qe6 (26...f5 27.g4 Rg4 28.Rg2-+) 27.Rf1 g4 28.Rg3 f5 29.Bc3 (29.Bc1 Bf6 30.Bd2 Bd8-+) 29...Bf6 30.Kg1 Bh4 31.Be1 (31.Bd2 Bg3 32.hg3 Kf7-+) 31...Bg3 32.Bg3 Re3 33.c3 Qc6 34.Be5 Rc3 35.Qb1 (35.Qb2 Rc8 36.Qd2 Rc1-+) 35...Re3 (better is 35...Rc8!? 36.Qe1 Rc1 37.Qd2-+) 36.Rc1 Qe6 37.Rc5 Re5 38.de5 Qe5 39.Qf1 Qe3 (39...Qe3 40.Qf2 d4-+) 0–1. marus2 – Hrct, internet, 2001.

5.Nd2 Be7

6.Bd3 0-0 7.Ngf3 (7.Ne2 ed4 (7...a5 8.b5 a4 9.a3 Re8 10.0-0 ed4 11.Nd4=) 8.Nd4 Ne5 9.b5 Re8 10.0-0 Nd3 11.cd3=) 7...b6 (7...ed4 8.Bd4 c5 9.bc5 dc5 10.Bb2 Qc7 11.0-0=; 7...Re8 8.0-0 ed4 9.Bd4 Ne5 10.Ne5 de5 11.Be5=) 8.de5 (8.0-0 Bb7 9.e4 ed4 10.Nd4 d5 11.ed5=) 8...de5 (8...Ne5 9.Ne5 de5 10.Be5 Bb4 11.Qf3=) 9.Ne5 Ne5 10.Be5 Bb4 11.Qf3 Bd2 12.Kd2 Bg4 (better is 12...Nd5!?=) 13.Bf6+/- Qd3 14.cd3 Bf3 15.gf3 gf6 16.Rhg1 Kh8 17.Rg4 Rg8 18.d4 Rg6 19.Rc1 Rc8 20.d5 Rg5 (20...f5 21.Ra4 Rd8 22.Rc7 Rd5 23.Ke2+/-) 21.e4 h5 22.Rh4 Kg7 23.f4 Rg2 24.Rh5 Rf2 25.Ke3 Rg2 26.Kf3 Rg6 27.h4 Rh6 (27...a6 28.f5 Rh6 29.Rh6 Kh6 30.Rc6+–) 28.Rh6 Kh6 29.Rc6 Kg7 (29...Rh8 30.Rc7 Kg6 31.d6+–) 30.d6 Rd8 (30...b5 31.Kg4+–) 31.dc7 Rc8 32.Kg4 Kf8 (32...b5 33.h5+–) 33.Kf5 Ke7 34.h5 Kd7 35.Rc1 Ke7 36.h6 Kd7 1–0. themonkey – NN, GameColony.com, 2002.

6.Bd3= ed4 7.Bd4 Ne5 8.Bb5 =.

5.Be2 e4

6.d5 a5 7.a3 Be7 8.Nc3 =.

6.Nf3?? d5 7.Qd2? (better 7.Nfd2 Bb4 8.a3-/+) 7...Bb4?? (better 7...ef3 8.Bf3 Nb6-+) 8.0-0?? (better 8.Qb4 ef3 9.Bf3=) 8...ef3 (better 8...Bd2 9.Nfd2 Nb6-+) 9.Qb4 fe2 10.Bc3 (10.Re1-+) 10...ef1Q 11.Kf1 c5! 12.Nd2 (12.dc5 Qc7 Double attack (12...Qc7 Decoy)) 12...c4 (better 12...cb4 13.Bb4 Qc7-+) 13.Bb2 (13.Re1 a5 14.Qa3 Qe7 15.Qe7 Ke7-+) 13...Ne4 (better 13...Qb6 14.a3-+) 14.a3 (14.Ne4 de4 15.Qc4 Nf6-+) 14...Qh4 (better 14...a5 15.Qb5 Nd2 16.Ke2 c3 17.Bc3 Ne4-+) 15.Qe7 (15.Ne4 Qe4 16.Rc1-+) 15...Ke7 (better 15...Qe7 16.Ne4 Qe4-+) 16.Nf3 Ke6 (16...Qf2) 17.g3 (17.Nh4 c3 18.Bc1-+) 17...Nd2! 18.Ke2 (18.Nd2 Qh2 Decoy) 18...Qh3 (better 18...Qh5 19.Kd2 Qf3 20.Rf1-+) 19.Nh4 (19.Ng5 Ke7 20.Nh3-+) 19...Qg4 (19...Qh2!? 20.Nf3 Nf3 21.Kf3-+) 20.f3 Qh3 21.Kd2 Qh2 22.Kc1 Qg3 23.Bc3 Qf2 24.Kb2 Qe3 (24...Qh4 25.Re1-+) 25.Rc1 Kd6 (25...Qf2 26.Re1 Kf6 27.Bb4-+) 26.a4 (26.Nf5 Kc6 27.Ne3-+) 26...Qc1! 27.Kc1 Nb6 28.Kd2 Kc6 (28...a5 29.Bb2-+) 29.Ke3 Na4 30.Kf4 Bf5 (better 30...Nc3 31.Ke3-+) 31.Kg5 Rhe8 (31...Bc2 32.Ba5-+) 32.Ng2 Re6 (better 32...Bc2 33.Ba5-+) 33.Ne3 h6 (better 33...Re3 34.Kf4 Rc3 35.Kf5 Rf3 36.Kg4-+) 34.Kf4 Re3 35.Kg3 Nc3 36.Kf2 (36.Kf4 Rae8 37.Kg3 Ne2 38.Kg2 Nf4 39.Kf2 Re2 40.Kg1 Rc2 41.Kf1 Bd3 42.Kg1 Re1) 36...f6 (36...Re2 37.Kg3 g5 38.f4 Ne4 39.Kf3 Rf2 40.Ke3 gf4) 37.Ke3-+ Bc2 38.Kd2 Nd1 39.Kc2 b5 40.Kd2 Re8 41.Kd1 b4 42.Kc2 Black now must not overlook the idea c3 42...a5 43.Kb1 Kb5 44.Ka2 (44.Kb2 c3 45.Kc2 Kc4 46.Kd1 b3 47.f4 b2 48.Kc2 Re1 49.f5 b1Q) 44...a4 Black intends b3 (44...c3 45.f4 Re2 46.Kb1 b3 47.f5 Re1) 45.Kb2 c3 46.Kc2 Kc4 47.Kb1 (47.Kd1 a3 48.f4 a2 49.f5 a1Q 50.Kc2 b3) 47...b3 48.Ka1 (48.f4 Re1) 48…a3 (48...a3 49.Kb1 Re1; 48...Re1) 0-1. bakkouz - opperwezen (2510), Casual Bullet game, lichess.org, 2018.

6.Nf3?? ef3 7.Bf3 d5 8.a3-+.

5.Be2 Be7

6.Nf3 e4 7.Nfd2 d5 8.c4 (8.a3 Nb6=) 8...c6 (8...Bb4 9.Qb3 Qe7 10.a3 Bd2 11.Nd2 dc4 12.Nc4=+) 9.b5 0-0 10.Nc3 Re8 11.Qb3 Nf8 12.a4 a6 13.0-0 h5 (13...Bg4 14.Bg4 Ng4 15.Qd1=) 14.cd5 cd5 15.f3 ef3 16.Nf3 Ng6 (16...Bd6 17.Rae1= (17.Nd5? Nd5 18.Ne5 Be5 19.de5 Be6-+)) 17.Ng5 (17.Ne5 Be6 18.Ng6 fg6+/-) 17...Be6 (17...Qd6!?+=) 18.Ne6+/- fe6 19.Rf6 (19.Qd1 h4+/-) 19...Bf6 (better 19...gf6!? 20.Bh5 Kg7=) 20.Bh5+/- Ne7 21.Be8 Qe8 22.Rf1 Qg6 23.ba6 ba6 24.Rf3 Nf5? (better 24...Rf8+/-) 25.Nd5!+- Nh4? (25...ed5 26.Qd5 Double attack (26.Qb7 Decoy)) 26.Nf6 gf6 (26...Kh8 27.Rf2 Rf8+-) 27.Qe6 (better 27.Rg3 Re8 28.Rg6 Ng6+-) 27...Kg7 (27...Kh8 28.Qf6 Qf6 29.Rf6 Rb8+-) 28.Rg3 1-0. onur604 (2320) - tirumpu (2310), Casual Rapid game, lichess.org, 2021.

6.Nh3 0-0 7.0-0 e4 8.Nf4 =+.

5.de5 de5

6.Nf3 Bb4 7.c3 Bd6 8.Nbd2 0-0 9.Be2 Nc5 10.0-0 Bf5 11.Nc4 Bg4 (11...Qe7 12.Ba3-/+) 12.Nd6? (better 12.Nce5!? Be6 13.Nc4=) 12...cd6-/+ 13.h3 Bh5 14.c4 Qb6 15.Rb1 Qc6 (better 15...Bg6!? 16.Be5 Qb1 17.Qb1 Bb1 18.Bf6 Ba2-+ (18...gf6?! 19.Rb1 Rfd8 20.Nd4=+)) 16.Ne5=+ de5 17.Bh5 Na4 (17...Rfd8 18.Qf3 Qe6 19.Bg4 Ng4 20.Qg4 Qg4 21.hg4=+) 18.Bf3 (better 18.Be5!? Rfd8 19.Qf3 Nh5 20.Qh5+=) 18...e4=+ 19.Be2 Rfd8 20.Qb3 Nc5 21.Qc2 Nd3 (21...b6 22.Rfd1=) 22.Rfd1 (22.Bd4!?+=) 22...Nb2= 23.Qb2 b6 24.Qe5 Nd7 (24...Qa4!?=+) 25.Qd5 Qd5 26.Rd5 Nc5 27.Rbd1 Ne6 (27...Re8!?=) 28.Bg4+= Rd5 29.cd5 Nc5 30.d6 Rd8 31.d7 (better 31.a3+=) 31...g6-/+ 32.h4 f5 33.Be2 Rd7 (33...Nd7? 34.Bb5+-) 34.Rd7 Nd7 35.h5 Kg7 36.hg6 hg6 37.g4 Kf6 38.gf5 gf5 39.f3 Ke5 40.Kf2 Nc5 41.a3 Nd3 Black prepares the advance f4 42.Bd3 ed3 43.Ke1 f4 (better 43...Kd5-+) 44.Kd2 fe3 45.Ke3 d2 46.Kd2 Kf4 47.Ke2 a6 48.a4 b5 49.ab5 ab5 50.Kd3 Kf3 51.Kc3 ½-½. muhammadaudii (2120) - Chessmaster_w (2060), lichess.org, 2020.

6.Nf3 Bb4 7.Nbd2 Qe7 8.Be2 0-0 9.0-0 b6 10.a3 Bd2 11.Qd2 Bb7 12.Rfd1 Rfd8 13.Qb4 c5 14.Qb3 Rac8 15.a4 a6 16.Bc4 Bf3 17.gf3 a5 18.Rd2 Rb8 19.Rad1 Re8 20.Bb5 Red8 21.Rd6 Rb7 22.Qd3 h6 (22...Ne8 23.Rd5 (worse 23.Rd7 Rbd7 24.Bd7 Nf6=) 23...Qg5 24.Kh1+/-) 23.f4 e4?? (better 23...Ne8 24.Rd5 Nef6 25.Re5 Qf8=) 24.Bf6+- Qf6 (24...gf6 25.Qd5 Ra7+-) 25.Qe4 Qd6 (25...Rbb8 26.Rf6 Nf6 27.Rd8 Rd8+-) 26.Rd6 Rc7 27.Qd5 1-0. muhammadaudii (2115) - waddah_ghadanfar (2115), lichess.org, 2020.

4.d4 e4

5.a3 c6 6.c4 d5 7.Nc3 Bd6 8.Qc2 =.

5.a3 Be7 6.d5+= 0-0 7.Nc3 a5 8.Nge2 =.

5.c4 Bd7 6.Ne2 (6.Nc3 Be7= (6...Nc6 7.a3 a5 8.b5 Ne7 9.Qc2 d5+=; 6...c6 7.d5 Be7 8.Qc2 Qb6 9.a3 Bf5+=; 6...Na6 7.b5 Nb8 8.Nge2 c6 9.d5 Qe7+=) 7.Qc2 d5 8.b5 c6 9.bc6 Nc6=) 6...Be7 (6...d5 7.c5 Be7 8.Nf4 b6 9.Nc3 c6=) 7.d5 (7.Nbc3 a5 8.b5 c6 9.bc6 bc6+=) 7...0-0 8.Ng3 (8.Nbc3 Re8 9.Ng3 a5+=) 8...Na6 (8...Re8 9.Nd2+= Bg4+=) 9.a3+= c6 10.Nc3 Rc8 11.Nce4 cd5 12.cd5 Nc7 13.Bc4 b5 14.Bb3 Ne4 15.Ne4 Bf5 16.Qd4 Be4?? 17.Qe4 f5 18.Qf3 Bf6 19.Bf6 Qf6 20.0-0 Na8 21.Qe2 Rc3 22.Rab1 Nb6 23.Qb5+– f4 24.ef4 Qf4 25.Qe2 Nd7 26.g3 Qf3 27.Qe6 Rf7 28.Bd1 Qd3 29.Be2 Qf5? 30.Qf5 Rf5 31.Bg4 Rf7 32.Be6 Kf8 33.Bf7 Kf7 34.Rbc1 Ra3 35.Ra1 Ra1 36.Ra1 Kf6 37.Ra7 Nb6 38.b5 Nd5 39.Rd7 Nc3 40.b6 (40.b6 Ke6 41.b7 Kd7 42.b8Q+–) 1–0. gtate (2020) – gbsrao (2140), net–chess.com, 2007.

5.d5 a5 6.b5= Be7 7.Ne2 a4 8.Ng3 =.

5.d5 c5 6.Bf6 Qf6 7.Nd2 Bf5 8.Rb1 cb4 9.Rb4 b6 (9...Qe5!?+=) 10.Ne4 Be4 (10...Qg6 11.Nf3 Be7 12.Bd3+/-) 11.Re4+– Be7 12.Bb5 Kf8 13.Ne2 g5 (13...Qb2 14.Rc4 g6 15.Qd4+–) 14.0-0 a6 15.Ra4 (15…Rg8 16.Ng3+–) 1–0. mrkt – MAHUSAY, ChessWorld.net, 2003.

5.d5 Nbd7 6.Nc3 Nb6 7.Qd4 Qe7 8.Bb5 Bd7 9.Bd7 Nbd7 10.Nge2 Nb6 11.Ng3 (Now all is on e4) 11...0-0-0 12.Nge4 Ne4 13.Ne4 f6 14.Ng3 Qe5 15.Qg4 f5 16.Qf5 Qf5 17.Nf5 Nd5 18.b5 (18.Ng7?! Bg7 19.Bg7 Rhg8=) 18...Rd7 19.Rd1 Nb4 20.a3 Nc2 21.Kd2 Rf7 22.g4 (22.Kc2?! Rf5 23.f3 Rb5=) 22...g6? (better is 22...Na3 23.Ba3 g6+–) 23.Bh8 (23.Kc2?! Rg8 24.Ng3 Rf2 25.Rd2 Rd2 26.Kd2 Bg7 27.Bg7 Rg7+–) 23...gf5 24.Kc2 fg4 25.Rd2 Rf5 26.h3 gh3 27.Rh3 Rb5 28.Rh7 Rc5 29.Bc3 b6 (29...Rf5+–) 30.Rh8 Rf5 31.Bg7 Kb7 32.Rf8 Rc5 33.Bc3 b5 34.f4 a5 35.Kb2 b4 36.ab4 ab4 37.Bb4 Rb5 38.Kc3 c5 39.Ba3 Kc6 40.Rd8 Ra5 41.R2d6 Kb5 42.Rb8 Ka4 43.Bc1 Rb5 44.Kc4 Rb4 45.Rb4 cb4 (45...Ka5 46.Rb5 Ka4 47.Ra6) 46.Ra6 1–0. kamret (2195) – alex38, GameColony.com, 2003.

5.g3 Nc6 6.c4 Nb4 7.Qa4= Nc6 8.d5 Bd7 9.dc6+= Bc6 10.Qa5 Be7 11.Be2 d5 12.a3 0-0 13.f4 Qc8 14.Nd2 b6 15.Qc3 a5 16.h3 Qd7 17.Bg4 Ng4?? 18.Qg7 (18.hg4?! Qg4 19.Ne2 Rfd8=) 1–0. sour (1860) – spacebuffalo (1775), net–chess.com, 2009.

5.a3 Nbd7

6.c4 a5 7.b5 Be7 8.Ne2 =.

6.d5= Be7 7.Ne2 Nb6 8.Nec3 =.

5.c4 c6

6.a4 d5 7.c5 Be7 8.Ne2 0-0 9.Nf4 Bf5 10.Be2 Nbd7 11.g4 Bg6 (11...Be6 12.0-0=) 12.g5 (12.h4!? h6 13.Nd2+=) 12...Ne8+= 13.h4 f6?? (better is 13...Bf5+=) 14.Ne6+/- (14.Ng6?! hg6 15.Nd2 Nc7+=) 14...Qc8 15.Nf8 Nf8 16.Bg4 f5 17.Bh5 b6 18.Be2 a5 (18...Rb8 19.Bc3+/-) 19.Qd2 (19.cb6!? Bb4 20.Bc3 Bf7 21.Bb4 ab4+–) 19...ab4 20.cb6 Qb7 (20...Ra5!?+/-) 21.a5+– Nd6? (better is 21...Bf7+–) 22.Qb4 Nc4 23.Qc3 Nb2 24.Qb2 c5 (24...Nd7+–) 25.a6 Qb8 26.a7 Qb7 27.Ba6 Qc6 28.b7 Ra7 29.b8Q (29.b8Q Ra6 30.Ra6 Qa6 31.Qc7+–) 1–0. Anantharam,R (1780) – Divya,Garg, ch–Commonwealth, Nagpur IND, 2008.

6.Nc3 Be7 7.Nge2 0-0 (7...d5 A) 8.c5 0-0 (8...b6 9.Qa4 b5 10.Qb3 a5 11.ba5 Qa5+=) 9.Qa4 Nbd7 10.a3 a5 11.b5 Bc5+=; B) 8.cd5 Bb4 9.dc6 Nc6 10.a3 Ba5 11.Rc1 Qb6=; C) 8.a3 dc4 (8...a5 9.b5 0-0 10.Nf4 Bd6 11.c5 Bf4=) 9.Ng3 b5 10.Nge4 Ne4 11.Ne4 0-0=) 8.Nf4 (8.d5 Qb6 (8...Bg4 9.h3 Bf5 10.a3 Qb6 11.g4 Bg6+=; 8...Na6 9.a3 Bg4 10.Qb1 cd5 11.Nd5 Nc7+=) 9.a3 a5 10.Ng3 ab4 11.Qb3 Na6+=) 8...d5 9.c5 (9.b5 dc4 10.Bc4 cb5 11.Bb5 a6+=) 9...Na6 (9...b6!?+= 10.Qa4 a5 11.b5 g5+=) 10.Ba6= ba6 11.a4 (11.Qa4 Rb8=) 11...Rb8 12.Ba3 Kh8 13.Rb1 g5 (13...Bg4 14.Qc2=) 14.Nfe2+= Ng4 15.h3 Nh6 16.Qd2 f5 17.g3 (17.0-0 g4+=) 17...Ng8 18.Qa2 Nf6 19.h4 gh4 20.Rh4 Ng4 21.Rh1 Bg5 22.Bc1 Rf6 23.Nf4 Bf4 24.ef4 Qf8 25.Be3 Rh6 26.Kd2 (26.Rh6!? Qh6 27.Qe2=) 26...Rh1+= 27.Rh1 Rb4 28.a5 (28.Qa3 a5+=) 28...Qe7 (better is 28...Qg7 29.Rc1 Nh2–/+) 29.Ne2? (better is 29.Ke1!?+=) 29...Qb7-+ (worse is 29...Ne3 30.Ke3 Qb7 31.Nc1–/+) 30.Kc2 (30.Kc1 Rb3 31.Kc2 Ne3 32.fe3 Re3-+) 30...Qb5 31.Nc1 Rc4 (31...Ra4!? 32.Qb3 Rc4 33.Kd2 Qa5 34.Ke2-+) 32.Kd1–/+ Ra4 33.Qe2 Ra5 34.Qf1?? (better is 34.Qc2-+) 34...Ra1 (34...Qa4 35.Kd2 Rb5 36.Qd1 Rb2 37.Ke1 Qd1 38.Kd1 Rf2 39.Bd2-+) 35.Bd2 (35.Qb5 ab5 36.Kc2-+) 35...Qb3 36.Ke1 Qc2 37.Ke2 (37.Rh4 Rc1 38.Bc1 Qc1 39.Ke2 Qc2 40.Ke1 Qc3 41.Kd1 a5-+) 37...a5 (37...a5 38.Qd1 Ba6 39.Ke1 Qd1 40.Kd1 Nf2 41.Kc2 Nh1-+) 0–1. Raudsepp,Kusta – Fronczek,Heinrich (2295), Wch Seniors Gladenbach, 1999.

6.d5 Be7 7.Nc3 0-0 8.Qc2 =.

6.Be2 Be7 7.Nc3 0-0 (7...d5 8.Qb3+=) 8.h3 (8.d5 Nbd7+=) 8...a6 (8...Nbd7 9.Qc2+=) 9.g4 (9.d5 a5 10.b5 cb5+=) 9...d5–/+ 10.f4 (10.a3 Ne8–/+) 10...Nbd7 (better is 10...dc4!? 11.Bc4 Bb4-+) 11.g5+= Bb4 (better is 11...Ne8!? 12.cd5 Bb4+=) 12.gf6+/- Qf6 13.a3 (13.Qb3 Bc3 14.Qc3 Qh4 15.Kf1 Qg3=) 13...Qh4 14.Kd2 (14.Kf1 Bc3 15.Bc3 Qg3=) 14...Bc3 (14...Ba5 15.Qe1 Qd8 16.Qg3+=) 15.Bc3+= (worse is 15.Kc3 Qg3+=) 15...Nb6 (15...Qg3 16.Bf1+=) 16.c5 (better is 16.Qe1 Qd8 17.c5+/-) 16...Na4? (16...Qf2 17.Kc1 Nd7+/-) 17.Qa4+– b5?? (17...Qf2 18.h4 Qg2+–) 18.Qd1 (better is 18.cb6 Bb7+–) 18...a5 19.Bb2 (better is 19.Qe1 Qf6+–) 19...b4 (19...Be6 20.Qe1 Qe7 21.h4+–) 20.a4 (better is 20.ab4!? Qg3 21.Bf1 Rb8+–) 20...Ba6 (20...Be6 21.Qe1 Qf6 22.Qg3+–) 21.Ba6 Ra6 22.Qe2 Raa8 23.Rf1 (23.Qg4 Qe7+–) 23...Rfb8 (23...f5 24.Qg2 Qe7 25.Ne2+–) 24.Qf2 (24.Qg4 Qe7+–) 24...Qd8 (24...Qf6 25.Qg3+–) 25.Ne2 (25.f5 Qf6+–) 25...Qc7 (25...f5 26.Rfg1+–) 26.Ng3 (26.f5 Qd7+–) 26...Qb7 (26...Qd7 27.f5+–) 27.Nf5 (27.Rhg1 Kh8+–) 27...g6 (27...Qd7 28.Nd6+–) 28.Qg3 (28.Qh4 Qd7 29.Nh6 Kg7+–) 28...b3 (28...Qa6 29.Rf2 Qd3 30.Kc1+–) 29.Nd6 White prepares f5 29...Qb4 (29...Qa6 30.Ra1+–) 30.Kc1 (better is 30.Bc3 Qa4 31.Ra1 Qa1 32.Ra1+–) 30...Qa4 31.f5 Qa1 (31...Qb4+–) 32.Ba1 b2 33.Bb2 Rb2 34.Kb2 Rb8 35.Ka2 Kg7. HMBCHESS2 – ItsOnNow, Live Game Caissa's Web, 2005.

5.c4 d5

6.a3 c6 7.cd5 cd5 (worse is 7...Qd5 8.Nc3 Qe6 9.Nh3+=) 8.Bb5 Nc6 9.Ne2 Bd6 10.0-0?? (10.Nbc3 0-0+=) 10...a6 (better is 10...Bh2 11.Kh2 Ng4 12.Kg3 Qg5-+) 11.Bc6–/+ bc6 12.Nd2?? (better is 12.Qd2–/+) 12...Bh2!-+ 13.Kh2 (13.Kh1 Ng4 14.g3-+) 13...Ng4 14.Kg3 h5 (14...h5 15.Qc1 h4 16.Kh3 Qc7-+) 0–1. croach (2395) – zzvotra (2735), net–chess.com, 2015.

6.a3 Be7 7.Nd2 c6 8.Ne2 Bg4 (8...0-0 9.cd5 cd5 10.Rc1=) 9.Qc2 Nbd7 (9...a5 10.b5=) 10.h3 Bh5 (10...Be6!?=) 11.Nf4+= Bg6 12.Ng6 (12.cd5 cd5 13.Qb3 Nb8+=) 12...fg6= 13.Be2 0-0 14.0-0 Rf7 15.f3 ef3 16.Bf3 Nf8 17.e4 Ne6 (17...de4 18.Ne4 Ne6 19.d5 cd5 20.Nf6 Bf6 21.Bd5 (worse is 21.cd5 Nd4 22.Qb1 Nf3 23.Rf3 Bb2 24.Qb2 Rf3 25.gf3 Qd5–/+) 21...Bb2 22.Qb2+/- (worse is 22.Be6 Qb6 23.Rf2 Qe6 24.Qb2 Qc4+=)) 18.cd5 cd5 19.e5 Nh5 20.Bh5 gh5?? (better is 20...Rf1 21.Rf1 gh5+/-) 21.Rf7+– Kf7 22.Qf5 Bf6 23.ef6 gf6 (23...g6 24.Qe5+–) 24.Qh7 Ng7 25.Nf3 1–0. Cozar,Miguel Angel – Salvador,Joaquin, Provincial, 1999.

5.c4 Be7

6.Nc3 0-0 7.a3 c6 8.d5 =.

6.c5 0-0 7.Nd2 Bg4 8.Be2 Be2 9.Ne2 d5 10.0-0 c6 11.a4 Qd7 12.Qb3 Qg4 13.Ng3 Nh5 14.Nh5 Qh5 15.b5 f5? 16.bc6+/- Nc6 17.Qb7 Qg6+= 18.Qb3 Qf7 19.Bc3 Rab8+= 20.Qc2. chessforces (1700) – gunar, net–chess.com, 2001.

5.c4 Bf5

6.Nc3 Be7 7.Nge2 0-0 8.Nc1 Nbd7 9.Nb3 c6 10.Be2 d5=+ 11.Rc1 Rc8 12.Nc5=+ Nc5 13.dc5= Qd7 14.Qd4 Rfd8 15.cd5+= cd5 16.0-0 Qe6 17.Rfd1 a6 18.Na4 Bf8 19.b5 Nd7 20.Rd2 f6 21.Qd5+/- Qd5 22.Rd5 Be6 23.Rd4 Ba2? 24.ba6 ba6 25.Ba6 Nc5? 26.Nc5 Bc5 27.Rd8 Rd8 28.Rc5 Rd2 29.Bd4 Bc4 30.Bc4 Kf8 31.Kf1 1–0. diggitus (2175) – steinara (2320), net–chess.com, 2008.

6.d5 a5=.

6.Ne2 d5+= 7.Ng3 Bb4 (7...Be6 8.c5=) 8.Bc3= Bc3 9.Nc3 Bg6 (9...Bg4 10.Qb3 c5 11.cd5 (11.Nd5? Nd5 12.Qb5 Bd7 13.Qc5 Nf6-+) 11...cd4 12.Qa4 Nbd7 A) 13.Nge4 dc3 14.Nf6 Qf6 (worse is 14...gf6 15.Qg4 Rc8 16.Qg7+=) 15.Qg4 c2 16.Qe4 Kd8=; B) 13.Qd4+/-) 10.Qb3 dc4 (10...b6!?=) 11.Qb7+/- Nbd7 12.Bc4 0-0 13.Nce4 (better is 13.Nge4 Ne4 14.Ne4+=) 13...Rb8? (better is 13...Ne4!? 14.Ne4 c5+=) 14.Nf6+– Nf6 (14...Qf6 15.Qc7 (15.Qa7?! Qc6=) 15...Rfd8 16.Be2+– (16.Qa7?! Qc6=)) 15.Qa7 Qd6 (15...Re8 16.0-0+–) 16.0-0 h5 (16...Rb2 17.a4+–) 17.Qc5 (17.Qa5 Qb4 18.Qb4 Rb4+–) 17...Qd7 (better is 17...Qc5 18.dc5 h4+–) 18.Qg5 Kh8 (18...Qg4 19.Qg4 Ng4 20.a4+–) 19.Rac1 (19.a4 Rb2+–) 19...c6 (19...Rb2 20.f4 Nh7 21.Qh4+–) 20.Be2 (20.a4 Rb2+–) 20...Nh7 (20...Rb2 21.a4+–) 21.Qc5 (21.Qh4 Rb2+–) 21...h4 22.Nh5 Be4 (22...h3 23.Qc6 Qc6 24.Rc6+–) 23.f3 (23.Qe5 f5+–) 23...Bg6 (23...Bd5+–) 24.Nf4 Rb2 (24...Qe8 25.e4+–) 25.Ng6 (25.Qc6 Qe7 26.e4 Qg5+–) 25...fg6 Black fights for the Initiative 26.Bd3 (26.Rfe1 h3 27.a4 hg2 28.Qc6 Qe7+–) 26...Qe6 27.Qe5 (better is 27.Be4!? Qa2 28.Rc2 Rc2 29.Bc2 Qd5+–) 27...Qa2 28.Bg6?? (better is 28.g4+–) 28...Rg2-+ 29.Kh1 Rg6 (better is 29...Rg5!? 30.Rc2 Qa6 31.Rfc1 Re5 32.de5 Rf3 33.Rc4-+) 30.Rg1 Rg1 31.Rg1 Threatening mate... how? 31...Qf7 32.f4 Qd5 33.Qd5 (33.Rg2 Nf6-+) 33...cd5 34.Rg4 Re8 35.Rh4 Kg8 36.Rh3 (36.Rh5 Nf6 37.Re5 Re5 38.fe5 Ng4-+) 36...Nf6 37.Rg3 Rc8 38.h4 Rc2 (38...Ne4 39.Rf3-+) 39.Rg5 (39.Kg1 Re2-+) 39...Re2 (39...Rc3 40.Kg2 Re3 41.h5-+) 40.Rg3 (40.Re5 Ng4 41.Rd5 Re1 42.Kg2 Ne3 43.Kf2 Nd5 44.Ke1 Kf7-+) 40...Kf7 (40...Ne4!? 41.Rf3-+) 41.Kg1 Ne4 42.Rf3 (42.Rh3 Nd2-+) 42...Kf6 43.Kf1 (43.Rh3 Kf5 44.Kf1 Rf2 45.Kg1 Kg4-+) 43...Rh2 44.Kg1 Rh4 45.Kg2 Kf5 46.Rf1 Rg4 47.Kh3 (47.Kh2 Nd2 48.Rc1 Nc4-+) 47...Rg3 48.Kh4 (48.Kh2 Re3 49.Kg2 Rd3-+) 48...g6 (48...Re3 49.Rg1-+) 49.Re1 Rg4 50.Kh3 Nf2 51.Kh2 Ke4 52.Re2 Kf3 0–1. Rohrbacher,Walter – Paulsen,Eckart, Baden–ch SN Karlsruhe, 2003.

6.Ne2 d5 7.Ng3 Bg6 8.Nc3 Bb4=+ 9.Qa4 Nc6 10.cd5 Qd5 11.a3 Bc3 12.Bc3 0-0 13.Bc4 Qd7 14.0-0 h6 15.d5? Nd5-+ 16.Rfd1?? Nc3 17.Rd7 Na4 18.Rc7 Nc5 19.Ne2 Rfd8 20.Nf4 Bh7 21.Rf7 Kh8 22.Re7 Ne7 0–1. gtate (1880) – eforry (1970), net–chess.com, 2003.

5.Nd2 d5

6.a3 a6 7.c4= c6 8.cd5 cd5=+ 9.g3 Bd6 10.Bg2 0-0 11.Ne2 Be6 12.0-0 Ng4 13.h3 Nf6 14.Nf4 Qc7 15.Ne6 fe6=+ 16.f4 ef3 17.Nf3 Bg3 18.Ne5 Nc6 19.Rf3? Be5 20.de5 Ne5 21.Rf2 Ng6 22.Rc1 Qg3 23.Rf3 Qh4 24.Bf6 gf6 25.Rf1 Kh8 26.Qc2 Rab8 27.Qc7 f5 28.Rfe1 Rg8 29.Qc3 Rg7 30.Re2 Ne7 31.Qe5 Rbg8 32.Qe6 Qh3 (32...Qh3 33.Qf6 Qf3-+) 0–1. caesar (2040) – eforry (1945), net–chess.com, 2003.

6.a3 Bd7 7.c4= c6 8.cd5 cd5=+ 9.Nb3 Ba4. ajeffries (2075) – jbumgar (1675), net–chess.com, 2009.

5.d5 c6

6.Nc3 Qb6 7.a3 Be7 8.Nge2 a5 9.b5 =.

6.Nc3 Qb6 7.a3 Be7 8.Nge2 Bg4 9.h3+= Bh5 10.Qd4 0-0 11.Qb6 ab6 12.Nf4 Bg6 13.Ng6 fg6 14.Rd1 c5 (14...Nbd7!?+=) 15.bc5 (15.g4 Na6 16.b5 Nc7+–) 15...bc5 16.f3 (16.g4!? g5 17.Bg2+/-) 16...ef3+= 17.gf3 Nh5 18.Bg2 (18.Be2 Bf6 19.Ra1 Na6+=) 18...Ng3 19.Rh2 Bh4 20.Kd2 Nd7 21.Rb1 (21.Nb5 Nb6 22.Rb1 Nf5=+) 21...Rae8 (21...Ne5 22.f4 Nc4 23.Kd3 Nb2 24.Rb2 Ra3 25.Rb3–/+) 22.Ba1 (22.Nd1 Rf3 23.Bf3 Nf1 24.Ke2 Nh2=) 22...b6 (22...Ne5 23.f4 Nc4 24.Kd3 Ne3-+) 23.Ne2= Ne2 24.Ke2 Bg5 25.e4 Rf7 (25...Bf6 26.c3=) 26.Bf1 (26.h4 Bf4 27.Rhh1 Nf6+=) 26...Ref8 (26...Bf6 27.Bf6 Rf6 28.Ke3=) 27.h4+= Bf6 (27...Bf4 28.Rh1 Ne5 29.Rb6+=) 28.Bh3+/- Ba1 29.Ra1 (29...Ne5 30.Be6 Nf3 31.Bf7 Rf7 32.Rhh1+/-) 1–0. kamret (1850) – gris2101 (1675), GameColony.com, 2002.

6.Nc3 Qb6 7.a3 Be7 8.Nge2 Bg4 9.h3 Bh5 10.Qd4 Be2 11.Qb6 ab6 12.Be2 cd5 (12...0-0 13.Rd1+=) 13.Rd1 Nbd7 (13...Nc6 14.Nd5 Nd5 15.Rd5+/-) 14.Bb5 Rc8 15.Rd2 0-0 16.Nd5 Nd5 17.Bd7 (17.Rd5?! Rc2 18.Rd2 Rd2 19.Kd2 Bf6 20.Bf6 Nf6+=) 17...Rc7 18.Bf5 Nf6 (18...Bf6 19.Rd5 Bb2 20.Be4 (worse is 20.Rd6 Rc4+=) 20...Ba3 21.b5+/-) 19.g4 h6 (19...Rc4 20.g5 Ne8 21.h4+/-) 20.h4+– g6 (20...d5 21.Be5 Rc4 22.g5+–) 21.g5 Nh5 (21...gf5 22.gf6 Bd8+–) 22.Be4 hg5 23.hg5 Bg5 24.Rd6 Rc2 (24...Re8 25.Bg6! Demolition of pawn structure 25...fg6 26.Rg6 Kf7 27.Rg5 Rc2 28.Rhh5 Rb2 29.Rh7 Kf6+–) 25.Bc2 Rc8 26.Bg6! Demolishes the pawn shield 26...Ng7 (26...fg6 27.Rg6 Decoy to g6) 27.Bh7 (27.Rd7 Rf8 28.Rh7 Ra8 29.Rg7 Kh8 30.Rh7 Kg8 31.Rh8) 27...Kf8 28.Be4 Rc2 (28...Ke7 otherwise it's curtains at once 29.Rb6 Ne6+–) 29.Rd7 (29.Rd7 Nh5 30.Bc2+–; better is 29.Bc2 makes sure everything is clear 29...Ke7 30.Rb6 Ne6 31.Rb7 Kd6+–) 1–0. lucya (2150) – jonny12ball, GameColony.com, 2002.

6.Nc3 Qb6 7.a3 Be7 8.Nge2 Bg4 9.h3+= Bh5 10.Qd4 Bg6 11.Qb6 ab6 12.Nf4 +=.

6.Nc3 cd5 7.Nd5 Be7 8.Ne2 0-0 9.Ng3 Nbd7 (9...Nc6 10.Bf6 Bf6 11.Rb1+=) 10.Ne7+= Qe7 11.Nf5 Qe6 12.Nd6 Nb6 (12...Nd5 13.Nb5 a6 14.Bc4+/-) 13.c4 Rd8 14.c5 Nbd5 (better is 14...Ne8!?+/-) 15.Bc4 Rd6 16.cd6 Qd6 17.0-0 (17.a3 Bg4 18.Qd4 a6+–) 17...Qb4 (17...Ng4 18.g3 Be6 19.Bd5 Qd5 20.Qd5 Bd5 21.Rfd1+–) 18.Bd5 Qb2 19.Be4! Bg4 (19...Ne4 20.Qd8) 20.Bf3 Bf5 21.Qb3 Qb3 22.ab3 Be4 23.Be4 Ne4 24.Rfc1 Nd2 (24...a6+–) 25.Ra7! Rb8 (25...Ra7 26.Rc8) 26.Rb7! Rf8 (26...Rb7 27.Rc8) 27.f3 1–0. bambinik – Quai Chang Quo, internet, 2001.

6.Nc3 Nbd7 7.Nge2 (7.dc6 bc6 8.b5 Rb8=) 7...Be7 8.Ng3 0-0 (8...Qb6!?=) 9.Nge4+= Ne4 (9...Ne5 10.dc6 bc6 11.Bd3+=) 10.Ne4 Nf6 11.Qd4 Bf5 (11...cd5 12.Nc3+=) 12.Bd3 Be4 (12...cd5!? 13.Nd2 Bd3 14.cd3 Re8+=) 13.Be4+/- c5 14.Qc3 (14.bc5!? dc5 15.Qc3+/-) 14...cb4+= 15.Qd4 Qa5 16.0-0 Qc5 (16...Rfc8 17.a3 ba3 18.Ra3+/- (18.Ba3?! Qc3 19.Bf5 Qd4 20.ed4 Rc7+=)) 17.Bf3 (17.Qc5 dc5 18.Bf3 Rfd8+/-) 17...Rfc8+= 18.Rfc1 Qd4 (18...Qc4 19.Qc4 Rc4 20.c3+=) 19.Bd4+/- Rc4 20.Rab1 b6 21.Be2 Rc7 22.Bd3 Rac8 (22...Re8 23.Bf6 (23.Rb4?! Nd5 24.Rc4 Rec8 25.Rc7 Rc7+/-) 23...Bf6 24.Rb4+/-) 23.e4 (23.Rb4?! Nd5 24.Rb5 Nc3=) 23...Ng4 (23...a5+/-) 24.f3 (24.Ba6 Re8 25.Bb5+/-) 24...Bf6 (24...Ne5 25.Ba6 Re8 26.Rb4+/-) 25.Bf6+/- (worse is 25.fg4 Bd4 26.Kf1 Rc3+=; 25.Rb4?! Bd4 26.Rd4 Ne5+=) 25...Nf6 26.Ba6 (26.Rb4 Rc3 27.Re1 Kf8+/-) 26...Re8 27.Rb4 Kf8 (27...Rc3 28.Rb3 Rc5 29.c3+/-) 28.Kf2 (28.Bb5 Rec8 29.Bc6 Ke7+/-) 28...Rc5 (28...Rc3 29.Bb5 Rec8 30.Bc6+/-) 29.Bb7 (29.Bb5 Rec8 30.Bc6 Rc3+/-) 29...Ng8 (29...Re7 30.Bc6+/-) 30.Ra4 (30.Bc6 Rc8 31.Ra4+/-) 30...Ne7 (30...a5 31.Bc6 Rc8 32.c3+/-) 31.a3 (31.Ra7 f5+–) 31...Rc3 (31...a5 32.c3+/-) 32.Ba6 (better is 32.Ra7!? f5 33.g4+–) 32...Ng6+/- 33.Bd3 (33.Bb5 Re7+/-) 33...Nf4 34.Rg1 (34.Bb5 Re7+/-) 34...Re7 35.Ke3 Nd3 36.cd3 Rec7 37.Ra6 Rc2 (37...Ke7 38.Rb1+/-) 38.h4 (38.d4 Ke7+/-) 38...h5 (38...R2c3 39.g4+/-) 39.g3 (39.d4 R2c3 40.Kf4 R3c4+/-) 39...Ke7 40.Rb1 Kd7 (40...R2c3 41.Kd4+/-) 41.Rb4 (41.d4 R2c3 42.Kf4 Rc2+/-) 41...Kc8 (41...R2c3 42.Kd4+/-) 42.Raa4 (42.Rc4 Kb7 43.Rc7 Rc7+/-) 42...Kb7 43.Rc4 b5 44.Rab4 (44.Rc7 Rc7 45.Rb4 a6+/-) 44...Kb6 (44...a6 45.Rc2 Rc2 46.Kd4+/-) 45.Rc7 Rc7 46.Kd2 a5 47.Rb2 Kc5 (47...Rc8 48.d4+/-) 48.Rc2+– Kb6 49.g4 (better is 49.Rc7!? Kc7 50.d4+–) 49...g6? (better is 49...Rc2!? 50.Kc2 hg4 51.fg4 Kc5+/-) 50.d4 (50.Rc7 Kc7 51.g5 Kd7+–) ½–½. Ritter,Fredi – Pilz,Erhard, TT–05.25 TSC, 2003.

6.Nc3 Be7 7.Be2=.

6.c4 a5 7.a3 Be7 8.Qb3 (8.Nd2 Na6+=) 8...0-0 9.Ne2 ab4 (9...Nbd7 10.Ng3+=) 10.ab4+= Ra1 (10...Na6 11.Nd2+=) 11.Ba1 cd5 (11...Nbd7 12.Nd2=) 12.cd5= Bg4 (12...Nbd7!?=) 13.Ng3+= Nbd7 14.Bd4 (14.h3 Bh5+=) 14...Qc7 15.Nc3 Ne5 16.h3 (16.Nge4?? Ne4 17.Be2 Nc3 18.Bc3 Rc8 19.Bg4 Qc3 20.Qc3 Rc3-+) 16...Bd7 17.Be2 White prepares b5 17...Nd3 18.Bd3 ed3 19.0-0 Rc8 (19...b5 20.Qb1 Qc4 21.Rd1=) 20.b5 (20.Rd1 g6+=) 20...Qc4 (20...h5 21.Rd1=) 21.Qc4+= Rc4 22.Rd1 Rb4 23.Rd3 Bb5 24.Nb5 Rb5 25.Nf5 Bf8 26.Bf6 gf6 27.Kf1 Rb2 (27...Rb1 28.Ke2+/-) 28.e4 Rb1 29.Ke2 b5 30.Rg3 Kh8 31.Rc3 Rb2 32.Ke3 b4? (better is 32...Kg8+–) 33.Rc8 Kg8 34.Nd6 Kg7?? (34...b3 35.Ne8 Bh6 36.f4 Rc2+–) 35.Nf5 Kg8 36.d6 (36.d6 Rb3 37.Kd2 Rb2 38.Kc1+–) 1–0. Taulien,Hans_Juergen (2350) – Hansch,Stephan (2085), remoteschach.de, 2004.

6.c4 Qb6 7.Bf6 gf6 8.a3 Bg7 (8...f5!?=) 9.dc6+= Nc6 10.Qd6 f5 11.c5 Qd8 12.Qd8 Nd8 13.Ra2 Be6 (13...a5 14.Bb5 Nc6 15.ba5 Ra5 16.a4=) 14.Rd2 0-0 15.Ne2 (15.Bb5 a5 16.Ne2 ab4 17.ab4 Nc6 18.Bc6 bc6=) 15...a5= 16.Nf4?? ( 16.Nbc3 ab4 17.ab4=) 16...ab4-+ 17.ab4 Ra1 18.Bd3 Bc3 19.0-0 Bd2 (19...Rb1 20.Rb1 Bd2 21.Be2-+) 20.Nd2 Rf1 ( 20...Ra2!? 21.Ne4 fe4 22.Be4 Rb2-+) 21.Bf1=+ Nc6 22.Ne6 fe6 23.b5 Na7 24.b6= Nc6 25.Nc4 Rb8 26.f3 ef3 27.gf3 Ra8 28.Nd6 Rb8 29.Bc4+/- Nd8 30.Nf5 Kf7 31.Nd6 Ke7 32.Bd3 Nc6 33.Bh7+– Ne5? 34.Be4 Nc6 35.Bc6 bc6 36.Nc4 Kd7 37.h4 Rh8 (38.Ne5 Kc8 39.Nc6 Kb7+–). wesolyPolak (1625) – NN, GameColony.com, 2002.

6.c4 Be7 7.Nc3 Qb6 (7...0-0 8.Qc2= Bf5 9.Nf3=) 8.a3 a5 9.b5 Bd7 (9...0-0 10.Rb1=) 10.Qc2+= cb5 (10...Bf5!?+=) 11.Ne4+/- Ne4 12.Qe4 bc4 (12...f5!? 13.Qf3 0-0 14.cb5 a4+/-) 13.Bg7+– Rg8 (13...f5 14.Qc4 Rg8+–) 14.Qh7 Rf8 (14...Rg7 15.Qg7 Qb3+–) 15.Bd4 (15.Bc4 Qc5 16.Bf8 Qc4 17.Bg7+–) 15...Qb3 (15...Qb5 16.Qe4 f5 17.Qc2 Qd5 18.Qc4 Qc4 19.Bc4+–) 16.Nf3 c3 17.Bg7 Qb2? (17...Qd5 18.Bf8 Bf8+–) 18.Rb1 Qa3 19.Bf8 Bf8 20.Ng5 (20.Rb7? Qc1 21.Ke2 c2 22.Qe4 Be7-+) 20...Be7 (20...c2 21.Qc2 Bg7 22.Rb7 a4+–) 21.Qg8 Bf8 22.Qf7 Kd8 23.Qf8 Kc7 24.Nf7 (24…Nc6 A) 25.dc6 Rf8 26.cd7 (26.Nh6) 26...c2 (26...Rf7 27.d8B Kd8 28.Bc4-+) 27.d8Q Rd8 28.Rb7 Kb7 29.Nd8 Kb8-+; B) 25.Qa8+–) 1–0. themonkey (2125) – NN, GameColony.com, 2002.

6.dc6 bc6 7.Nd2 d5=.

5.d5 Be7

6.Nc3 c5 7.bc5 dc5 8.Nge2 Bd6 9.Ng3 Be5 10.Rb1 Qa5 11.Qd2 0-0 12.a3 (worse is 12.Nce4 Qa2 13.Qc1 Ne4 14.Be5 Qd5–/+) 12...Qb6 13.Na4 Qd6 14.Be5 Qe5 15.Nc5 b6 16.Nb3 Nd5 17.Qd4 Nc6 (17...Re8!?=) 18.Qe5+/- Ne5 19.Nd2 f5 (better is 19...Rd8!? 20.Nge4 f5+=) 20.Rb5+– Bb7 21.c4 Rac8 22.cd5 Rc1 23.Ke2 Ba6 24.a4 Ra1 25.f4 Ra4 26.fe5 Bb5 27.Kd1 Ra1 28.Kc2 Ra5 29.Kc3 (29.d6!? Bf1 30.Rf1 (30.Ndf1? Re5 31.Nd2 Rd5-+; worse is 30.Ngf1 Re5 31.g4 fg4–/+) 30...Re5 31.d7 Rc5 32.Kd1–/+) 29...Bf1 30.Rf1 g6 31.Kd4 (31.d6 Rc8 (worse is 31...Re5 32.Kd4 Ra5 33.Nb3–/+) 32.Kd4 Rcc5-+) 31...Ra4 (better is 31...Ra3!? 32.Nde4 Ra4 33.Kc3 fe4–/+) 32.Kc3= Ra5 33.Kd4 Ra4 (33...Ra3!? 34.Nde4 Ra4 35.Kc3 fe4–/+) 34.Kc3= Ra5 35.d6 ½–½. marekt – jasa, ChessWorld.net, 2004.

6.Nc3 Bf5 7.Nge2 Bg4 8.Qd4 0-0 (8...c5 9.bc5 dc5 10.Qa4 Kf8 11.Rd1+= (< 11.Ne4 b5 12.Qb5 Ne4–/+)) 9.Ne4+/- Bf5 10.N2g3 Bg6 11.Bc4 Re8 12.0-0 Nbd7 13.Bb5 a6 14.Ba4 b5 15.Bb3 Ne5 (15...a5 16.a4 ba4 17.Ra4 ab4 18.Qb4 Ra4 19.Qa4 (< 19.Ba4 Nd5 20.Qd2 N5b6+=) 19...Ne4 20.Ne4+/-) 16.f4 Neg4 (16...Ne4!? 17.Ne4 Be4 18.fe5 f5+/-) 17.f5+– (17...Bh5 18.a4+–) 1–0. kamret (2170) – goranste (1640), GameColony.com, 2003.

6.c4 a5!?–/+.

6.c4 c6 7.Nc3+= 0-0 8.Be2 c5 (8...Nbd7!?+=) 9.a3 (9.bc5 dc5 10.h4 Re8+=) 9...Na6 10.b5 Nc7 11.Qc2 Re8 (11...a6!? 12.ba6 Ra6=) 12.Ne4+= Ne4 13.Qe4 Bf6 14.Qc2 b6 15.Nf3 Bg4 (15...Bf5 16.Qb3+=) 16.0-0+/- a6 17.a4 a5 18.Rfd1 Bf3 19.Bf3 Bb2 20.Qb2 Re5 21.Qc2 Qf6 22.Be4 Qh6 23.h3 Rae8 24.Bf5 ½–½. Waibel,Ulrich (1830) – Mieck,Erwin (2000), remoteschach.de, 2004.

6.Ne2 Nbd7 7.Qd4 c5 8.bc5 Nc5 (8...dc5!? 9.Qd1 Qb6+=) 9.Nd2= Qb6 10.a4 Bf5 (10...Qa5!?=) 11.Ng3+= Will e4 fall? 11...Bg6 12.Bb5 Kf8 13.0-0 h5 14.h4 Rh7 15.Nc4 (15.Rab1 Rh6+=) 15...Qc7 16.Nd2 a6 17.Bc4 Ng4 18.Nge4 Ne4 19.Ne4 Nf6 (better is 19...Bh4!? 20.Rab1 Ke8+=) 20.Ng5+– (20.Nf6? Bf6 21.Qd2 Bb2-+ (21...Qc4?! 22.Bf6 gf6 23.Rfb1-+)) 20...Rh8 21.Bd3 Bd3 22.cd3 Qc5 23.e4 Qd4 24.Bd4 Nd7 25.Nf3 f6 (25...Bf6 26.Bf6 Nf6 27.Rfc1+–) 26.Rfb1 b5 (26...b6 27.Bb6 Kf7 28.Ra3+–) 27.ab5 1–0. Maly,Guenther (1740) – Suermann,Uwe (1825), remoteschach.de, 2009.

6.Ne2 Bf5 7.Ng3 Bg6 8.Be2 (8.Bc4 0-0 9.h4 h6 10.h5 Bh7 11.0-0=; 8.h4 h6 9.h5 Bh7 10.Be2 0-0 11.0-0=) 8...0-0 9.0-0 c6 10.c4 Nbd7 11.Nc3 a5 12.a3 ab4 13.ab4 Ra1 14.Qa1 Re8 15.Qa7 Qc8 16.Qd4 Bf8 17.Rd1 b6 (17...c5 18.Qd2+=) 18.h3 (18.dc6 Qc6 19.Nb5 Ne5+/-) 18...h5 (18...c5 19.bc5 dc5 20.Qd2+=) 19.Bf1 (19.dc6 Qc6 20.Ra1 h4+/-) 19...h4 (19...c5 20.bc5 Qc5 21.Nb5+=) 20.Nge2 (20.dc6 Nb8 21.Nge2 Nc6 22.Qb6 Ne5+/-) 20...Ne5 (20...c5 21.bc5 bc5 22.Qd2+=) 21.Nf4 (21.dc6 Nc6 22.Qb6 Ne5+/-) 21...Bf5? (better is 21...c5 22.bc5 bc5+=) 22.Be2?? (better is 22.dc6 Qc6 23.Nfd5+/-) 22...g6?? (better is 22...c5 23.bc5 bc5–/+) 23.Qd2 (23.Qb6?! g5=). Analyse Grob.

6.Nc3 0-0

7.f3 ef3 8.Nf3 Re8 9.Qd2 =.

7.f3 Bf5 8.g4= Bg6 9.f4 h6 10.Bg2 Qd7 (10...Re8 11.Nh3=) 11.f5+= Bh7 12.Ne4 Ne4 13.Be4 Qb5 14.a3 Bg5 (14...Bh4 15.Kd2+/-) 15.Qf3 c6? ( 15...Nd7+/-) 16.h4+– Bf6 17.Bf6 gf6 18.Ne2 c5 (18...Re8+–) 19.g5! Nd7 (19...fg5 20.hg5) 20.g6 fg6 (20...Ne5 21.Qh5 Kg7 22.gh7+–) 21.fg6 Ne5 22.gh7 Kh8 23.Qg3 Rf7 (23...cb4 24.Rg1 Qd7 25.ab4+–) 24.Rg1 cb4 (24...Qe8 25.Nf4 c4+–) 25.Qg8! (25…Rg8 26.hg8Q) 1–0. b4_player (2235) – Nureno (1675), GameColony.com, 2003.

7.Nge2 c6

8.Ng3 a5 9.b5 +=.

8.Ng3 a5 9.Nce4?! ab4 10.c4 bc3 11.Nc3 Qa5 =.

8.Ng3 a5 9.Nge4? ab4 10.Be2 Bf5 -+.

8.Ng3 Qb6 9.a3 a5 (9...Bg4 10.Qd2 a5 11.Nce4 Ne4 12.Ne4 ab4 13.Qb4 Qb4 14.ab4 Ra1 15.Ba1 cd5 16.Ng3+/-) 10.b5 cb5 (10...Bg4 11.Qd2 Rc8 12.Nce4 Ne4 13.Ne4+/-) 11.Nce4+= Ne4 12.Ne4 f5 13.Bd4 Qd8 14.Nc3 f4 15.ef4 Rf4 16.Nb5 (worse is 16.Bb5 Bf6 17.Ne2 Bd4 18.Nd4 Qb6+=) 16...Bf6 17.Be3 Re4 18.Bd3 (18.Rb1 Bg4 19.Be2 Be2 20.Qe2 Be5+/-) 18...Rg4+= 19.h3 Rg2 20.Rb1 Be5 21.Qf3 (21.Qh5 g6 22.Qf3+/-) 21...Rg5 (better is 21...Rh2!?+/-) 22.Bg5+– Qg5 23.Qe4 g6 24.h4 (24.Nd6 Bd6 25.Qe8 Bf8 26.Qc8 b5 27.Bb5 Qg2 28.Qe6 Kg7 29.Qe5 Kh6+–) 24...Qg4 (24...Qe7 25.h5 Bf5 26.Qe3 Bd3 27.Qd3+–) 25.h5 Qe4 26.Be4 g5 27.Nc7 Ra7 28.h6 g4 29.Rg1 Kh8 (29...Bh2 30.Rg2 Bf4+–) 30.Ne6 Nd7 31.Rg4 Nf6 32.Rh4 Bd7 33.c4 (33.c4 a4 34.Ke2+–) 1–0. marekt – michaelk13, ChessWorld.net, 2003.

8.Ng3 cd5 9.Nd5+= Nd5 10.Qd5 Nc6 11.b5 (11.Ne4?! Nb4 12.Qd2 d5=+) 11...Na5 ( 11...Be6!? 12.Qe4 d5+=) 12.Ne4+– Be6 (12...Re8+–) 13.Qd4 Bf6 14.Nf6 gf6?? (14...Qf6 15.Qf6 gf6+–) 15.Qh4 Kg7 (15...Bf5 16.Bf6 Bc2 17.Qh6 Qf6 18.Qf6+–) 16.Qg5 (16…Kh8 17.Bf6 Qf6 18.Qf6 Kg8 19.Bd3+–) 1–0. market (2140) – P_A_W_N (1690), GameColony.com, 2002.

5.d5 Bf5

6.c4 Be7 7.Nd2 0-0 8.Be2 c6 9.g4 Bg6 10.h4 h6 11.g5 hg5 12.hg5 Nh7 13.Bh5 Ng5 14.Bg6 fg6 15.Rb1 Na6 16.a3 Bf6 17.Qb3 (17.dc6 bc6 18.Bd4 Bd4 19.ed4 Qf6+=) 17...cd5 18.cd5 Qd7 (18...Rc8 19.Ne2+=) 19.Rh4 (better is 19.Ne2!?=) 19...Nf3+= 20.Ngf3 (20.Ndf3 Bh4 Discovered attack; 20.Ngf3 Bh4 Discovered attack) 20...Bh4 (worse is 20...ef3 21.Bf6 Rf6 22.Qd3+=) 21.Nh4 Qg4 22.Qc2 Qh4 23.Ne4 Rae8 24.Qc3 Re7 25.Ng3 Qh2 26.Qd2 Ref7 27.Nf1 Rf2 (better is 27...Qh4 28.Ng3 Rf2 29.Qf2 Rf2 30.Kf2 Qh2 31.Kf3 Qc2-+) 28.Nh2+= Rd2 29.Kd2 Rf2 30.Kd3 Rh2 31.e4 Rh3 32.Kc4 Nc7 33.Rf1 Re3 34.Rf4 Ne8 35.Bc1 Re1 36.Bd2 Rh1 37.Bc3 g5 38.Rf5 Rh4 39.Kd3 g4 40.a4 Rh3 41.Kd4 (41.Kc4 Rf3 42.Rg5 Rf4=) 41...Nf6+= 42.Be1 g3 43.Rg5 (better is 43.a5!?+=) 43...Rh4–/+ 44.Bg3 Re4 45.Kc3 Nh7 46.Rg6 Kf7 47.Kd3 (better is 47.Rd6!? Re3 48.Kc4 Rg3 49.Rd7 Kg6 50.Rb7+=) 47...Rb4-+ (47...Kg6?! 48.Ke4 Ng5 49.Kf4+=) 48.Bd6 Ra4 (48...Kg6?! 49.Bb4 Kf5 50.Bd6–/+) 49.Re6 Nf6 50.Re7 Kg6 51.Rb7 Nd5 0–1. rekt – conalma, internet, 2001.

6.Ne2 c6 7.dc6 bc6 8.Nd4 Bg6 (8...Bg4 9.f3 Bd7 10.c4=) 9.c4 c5 10.Qa4 Qd7 (10...Nbd7 11.Nc6 Qc7 12.Bf6=) 11.Qd7 (11.Nb5!? Ke7 12.Bf6 Kf6 13.N1c3+/-) 11...Nbd7= 12.Nb5 Kd8 13.a3 a6 14.N5c3 Be7 15.Be2 Ne5 16.bc5 dc5 (16...Nd3 17.Bd3 ed3 18.cd6 Bd6 19.Na4+=) 17.Ne4!+/- Be4 (17...Ne4 18.f4) 18.Be5 Rg8 (18...Nd7 19.Bc3+/-) 19.0-0 (19.f3 Bc2 20.Nc3+/-) 19...g5 (19...Nd7!? 20.Bc3 Bf6+/-) 20.Rd1 Ke8 21.Nc3 Bc2 22.Rd2 Bg6 (22...Bf5 23.Rad1 Ne4 24.Ne4 Be4 25.Bg4+–) 23.Bf3 h5?? (23...Rd8 24.Rd8 Kd8 25.Rd1 Nd7+–) 24.Ba8 h4 (24...Ng4 25.Bd6+–) 25.Bc6 Kf8 26.Rb2 Kg7 (26...Bd8 27.Rd1 Kg7 28.Nd5+–) 27.Nd5 Bd8 28.Rd1 Kh6 (28...Rh8 29.Rb8 Kh6 30.Nc3+–) 29.Nf6 Bf6 30.Bf6 Kh5 31.Bf3 g4 32.Rd5 Kh6 33.Bg4 a5 34.Rc5 a4 35.Bh4 Re8 36.Ra5 Re4 37.Bg5 Kg7 38.Be2 f6 39.Rb7 Bf7 40.Bh5 fg5 (40...Re8 41.Rf7 Kg8 42.Bf6 Re5 43.Ra8 Re8 44.Re8) 41.Rf7 Kh6 42.g4 Re6 (42...Rg4 43.Bg4 Kg6 44.Raf5 Kh6 45.R5f6) 43.Ra8 Re8 44.Re8 ½–½. market (2255) – bbe7662 (1795), GameColony.com, 2002.

6.Ne2 Be7 7.Ng3 Bg6 8.Be2=.

6.Ne2 Bg6 7.Nf4+= Nbd7 8.Be2 Be7 9.Ng6 fg6 10.Nc3 0-0 (10...c6 11.b5+=) 11.Qd4+/- Ne5 (11...c5 12.dc6 bc6 13.Ne4+/-) 12.0-0 c5 13.bc5 Neg4 (better is 13...Ned7!? 14.Ne4 dc5+–) 14.Ne4 dc5 15.Nf6 (15.Nc5 Nh2 16.Ne6+– (16.Kh2?! Qc7 17.Kg1 Bc5+/-)) 15...Nf6 16.Qa4 Nd5 17.Qb3 Kh8? (17...b5 18.Bb5 Rb8+–) 18.Rad1 (18.Qb7 Rb8 19.Bg7 Kg7 20.Qa7 Nc3–/+) 18...c4 (18...Qc7 19.Qd5 Rad8 20.Be5+–) 19.Bc4 (19.Qc4?! Qb6 20.Rd5 Qb2+–; 19.Qb7?! Rb8 20.Bg7 Kg7 21.Qd5 Qd5 22.Rd5 c3+–) 19...b5 (19...Qc7 20.Bd5 Rac8 21.Rd2+–) 20.Bb5 Qb6 21.Rd5 a6 (21...Bf6 22.Ba3 Rfd8 23.Rfd1+–) 22.Bd4 Qb7 (22...Qb8 23.Bc6 Qb3 24.cb3+–) 23.Rd7 Qb5 24.Re7 Rg8 (24...Qb3 25.ab3 Rg8+–) 25.Qf7 Qf1 (25...Qe5 26.Be5 h6 27.Qg6 Rge8 28.Qg7) 26.Kf1 Ra7 1–0. themonkey (1985) – NN, GameColony.com, 2002.

5.d5 Bg4

6.Ne2 Nbd7 7.h3 Bh5 8.Qd4 (8.Qd2 Bg6 9.Nf4 Bf5 10.Bb5 a6+=) 8...c5 9.dc6 bc6 10.Nf4 c5 (better is 10...d5!?=) 11.bc5+/- dc5 12.Qa4 Bg6 13.Bb5 Be7 14.Ng6 hg6 15.Bf6 gf6? (better is 15...Bf6!? 16.Bd7 Ke7 17.Qe4 Kd7+/-) 16.Nc3+– (16.Qe4?! Qa5 17.Nd2 Rd8+/-) 16...f5? (16...a6 17.Bc6 Rc8+–) 17.0-0-0 0-0 18.Rd7 (18.Rd7 Qe8 19.Qa6+–; worse is 18.Bd7 Bf6 19.Qa3 Bc3 20.Qc3 Qh4+–) 1–0. Kucharkowski,Jens – Kupec,Jan, CiF, 2006.

6.Ne2 Be2 7.Be2+= Na6? ( 7...Be7+= 8.Nc3 a5 9.a3 0-0 10.0-0 Qc8 11.Qd2 (11.g4 ab4 12.ab4 Ra1 13.Qa1 h6) 11...h6 12.h3 Nbd7 13.Qd4 (13.Nb5 a4) 13...Nb6) 8.Bb5+– Nd7 9.Qg4 1–0. Marram – Ekin Fisenk, internet, 2010.

4.Be2 Nc6

5.a3 a6 6.c4 Bd7 7.Nc3 Be7 8.Nd5 (8.Nf3 0-0=) 8...0-0 9.b5 (9.Nf3 e4 10.Ne7 Qe7=) 9...ab5+= 10.cb5? (10.Ne7 Ne7 11.cb5 Ned5+=) 10...Na5 (better is 10...Nd5 11.Bf3 Na5 12.Bd5 Bb5-+) 11.Nf3?? (11.Ne7 Qe7 12.d4 ed4 13.Bd4 Be6+=) 11...c6 (better is 11...Nd5 12.0-0 Qe8-+) 12.Ne7 Qe7 13.bc6 Bc6 14.0-0 Qe6 (14...Bf3 15.Bf3 Nc4 16.Bc3=) 15.d3= Bd5 16.e4 Bb3 17.Qd2 Nc6 18.Ng5 Qe7 19.f4 h6 20.fe5 (20.Nf3 Rfc8+=) 20...de5= 21.Nf3 Rfd8 22.Qc3 Be6 (22...Ba4!?=) 23.Ne5+/- Nd4 24.Bf3 (better is 24.Bd1!?+/-) 24...Rac8= 25.Qb4 Qb4 (better is 25...Qc5!? 26.Qc5 Rc5+=) 26.ab4+/- Nc2 27.Ra7 Rc7? (27...Nb4 28.d4 Nc6 29.Nc6 bc6 30.Rc1+/-) 28.Nc4?? (better is 28.Rc1!?+–) 28...Bc4 (28...Nb4 29.Be5 Rcd7 30.Bf6 gf6 31.Nb6=) 29.dc4+/- Nd4 (29...Ne8 30.e5 Ne3 31.c5 (31.Bb7? Nf1 32.Kf1 Rb8-+; worse is 31.Rb7 Nf1 32.Rc7 Nc7 33.Kf1 Rd2=) 31...Nf1 32.Kf1+/-) 30.Rfa1 (30.c5 Nc6 31.Bf6 gf6+–) 30...Nf3 (30...Rc4!? 31.Rb7 Ne4 32.Bd4 Rcd4 33.Be4 Re4+=) 31.gf3+– Nd7 32.Ra8 Rcc8 33.Rc8 Rc8 34.c5 f6 35.Rd1 (35.Rd1 Nf8 36.Kf2+–) 1–0. GuestLXMK – GuestJPND, freechess.org, 2017.

5.a3 Bd7 6.Nf3= Ne7 (6...e4 7.Nd4=) 7.c4 Ng6 (7...g6 8.Nc3=) 8.d4+= ed4 9.Nd4 Be7 10.Nc3 0-0 11.0-0 Re8 12.Bf3 (12.Qc2 c6+=) 12...Rb8 (12...Ne5 13.Be2=) 13.a4 (13.h3 a6+=) 13...Ne5 (13...c5!? 14.bc5 dc5+=) 14.Be2+= Bg4 15.f3 Bh5 (15...Bd7 16.e4+=) 16.Nf5 (16.Nd5 Nd5 17.cd5 h6+/-) 16...Bf8 (16...h6 17.e4+/-) 17.e4 (17.Ng3 g6+/-) 17...Bg6 (17...g6 18.Ne3 Bh6 19.Nc2+/-) 18.Ne3+/- Ned7 19.Qb3 (better is 19.Nb5+/-) 19...Nh5? (19...a5 20.Ncd5 ab4 21.Nb4+=) 20.g3 (20.f4 Nhf6 21.f5+/-) 20...h6 21.Rad1 Nhf6 22.Ncd5 Nh7 (22...Nd5!? 23.cd5 Be7+/-) 23.Ng4 (23.Nf4 c5+–) 23...Ng5 24.Nf4 Bh7 (24...c5 25.Ng6 fg6 26.b5+–) 25.h4 (25.c5!? a5 26.h4 Ne6+–) 25...Ne6+/- 26.Nd5 (better is 26.Ne6 Re6 27.c5+/-) 26...c6= 27.Nde3 Qc7 28.Kf2 (28.Qc3 f6 29.Qd2 a5 30.ba5 Nec5=) 28...Rbd8 (better is 28...h5!? 29.Nh2 a5–/+) 29.Nf5 (29.Qc3 f6 30.h5 a5=) 29...Qb6 (29...a5 30.Qc3 f6 31.b5=) 30.Kg2 Bf5 31.a5 Qc7 32.ef5 Nf4 33.gf4 Re2 0–1. Feofanov,Alexander – Smirnov,Vladimir O, 2012.

5.a3 Be7 6.Nc3+=.

5.b5 Nb4 6.a3 Nbd5 7.Nf3 Be7 8.0-0 0-0 9.c4=.

5.b5 Nb8 6.Nf3 (6.a4 Be7 7.Nf3 0-0 8.0-0 Re8 9.a5=) 6...a6 7.a4 Be7 8.Nc3 Bf5 9.d3=.

5.b5 Ne7

6.a4 Bf5 7.Nf3 Nfd5 (7...Ng6 8.0-0=) 8.d3 (8.0-0 Nb4 9.d3 Be6+=) 8...Nf6 9.Nbd2 a6 (9...Bg4 10.0-0+=) 10.e4 Bg4 (10...Bg6 11.0-0+=) 11.0-0 ab5 12.ab5 Ra1 13.Ba1 c5 14.bc6 bc6 (14...Nc6 15.Re1+=) 15.d4+/- Bf3 16.Nf3 (16.gf3?! Ng6+=) 16...ed4 (16...Ne4 17.de5 d5 18.c4+/-) 17.Qd4 c5? (better is 17...d5 18.ed5 Nfd5+/-) 18.Bb5+– Nc6 (18...Nd7 19.Qd6 Nc8 20.Qe5 Qe7+–) 19.Bc6 Ke7 20.Qc4 g6 (20...Nd7 21.Ng5 Qe8+–) 21.Ng5 Qc7 22.Qf7 Kd8 23.Ne6 1–0. Wall,Bill – Bahl,Rajnish, chess.com, 2007.

6.a4 Nf5 7.Nf3 e4 8.Nd4 d5 9.0-0=.

6.c4 a6 7.ba6 Ra6 8.Nf3 Rb6 9.Qc1=.

6.c4 Ng6 7.h4 (7.Nf3 a6= 8.ba6 Ra6 9.d4=) 7...h5 (7...e4 8.Bf6 Qf6 9.Nc3=) 8.Nc3 (8.Nf3 Ng4 9.g3=) 8...c6 (8...Be7 9.Nf3+=) 9.d4 e4 10.d5 c5 11.Qc2 Qe7 (11...Bf5 12.a4=) 12.a4 (12.Nh3 Nh4 13.Nf4 Ng6 14.Nh5 Kd8+/-) 12...Bf5= 13.Bf1 Ne5 14.Nh3 g6 (14...Nd3 15.Bd3 ed3 16.Qb3=) 15.Nf4 (15.Ng5 Nd3 16.Bd3 ed3+=) 15...Bh6 16.g3 (16.Qb3 0-0-0=) 16...0-0 (16...Nf3 17.Kd1–/+) 17.Be2+= Rfe8 18.Nb1 (18.a5 Rab8=) 18...Bg7 (18...a6 19.Nd2+=) 19.Nd2 Neg4 20.Qc3 ½–½. Kania,Andreas – Prelati,Maurizio, Toscolano, 1996.

6.Nf3 Ng6 7.0-0 Be7 8.c4 0-0 9.Nc3 Ne8 10.Nd5 f5 11.Qc2 c6 12.Ne7 Qe7 13.bc6 bc6 14.c5 d5 15.Qc3 e4 16.Nd4 Bd7 17.f4 ef3 18.Rf3 Rf7 19.Raf1+/- f4 20.ef4 Nf6 21.f5 Nf8 22.d3 Rb8 23.Bc1 Be8 24.Bf4 Rd8 25.Rg3 Nh5 (25...a6+–) 1–0. oldsage – touchdown, ChessWorld.net, 2006.

6.Nf3 Ng6= 7.0-0 Be7 8.d4 e4 9.Nfd2=.

4.Be2 Be6

5.a3 Nbd7 6.Nf3 h6 7.0-0 (7.c4 Be7=) 7...Be7 (7...Nb6 8.Nc3=) 8.d3 (8.c4 0-0=) 8...0-0 (8...a5 9.Nbd2=) 9.Nbd2 Nb6 (9...c5 10.c4=) 10.c4 a6 (10...a5 11.Qc2=) 11.a4 Qe8 (11...a5 12.b5+=) 12.a5+= Nbd7 13.Qc2 c5 (13...Bf5 14.e4 Bg6 15.Nh4+=) 14.Bc3 (14.bc5!? Nc5 15.d4 ed4 16.ed4+–) 14...cb4 (14...Qc8 15.Rfb1+=) 15.Bb4 d5 16.Be7 (16.Bc3 Qb8+=) 16...Qe7= 17.cd5 Bd5 (17...Rac8 18.Qb2 Bd5 19.Rac1=) 18.Rfc1+= Rfc8 (18...Rfe8 19.Rab1=) 19.Qb2 (better 19.Qc8 Rc8 20.Rc8 Kh7 21.Nc4+=) 19...Nc5? (better 19...e4 20.de4 Ne4+=) 20.Qe5+– Qd7 (20...Be6 21.e4+–) 21.Qb2 (21.e4!? Nb3 22.Nb3 Bb3+–) 21...Bf3+– 22.Nf3 (22.gf3?! Nd3 23.Rc8 Rc8 24.Bd3 Qd3 25.Qb7 Rd8=) 22...Nd3 23.Bd3 Qd3 24.Rc8 (24.Qb7 Rc1 25.Rc1 Rf8+–) 24...Rc8+= 25.Nd4 (25.Qb7!? Rc5 26.g3+=) 25...Qc3 26.Qc3 Rc3 27.g3 Ne4 28.Kg2 Nc5 29.Kf3 Nb3 (29...g6 30.g4=) 30.Nb3 Rb3 31.h4 (31.Rc1 g6=) 31...Kf8 (31...Rb5 32.Ke4=) 32.Ra4 (32.Rc1 Ke7=) 32...f6 (32...Rb5 33.Rc4=) 33.h5 (33.Rc4 Rb5=) 33...Kf7 (33...Rb5 34.g4=) 34.g4 (34.Rc4 Rb5=) 34...Rb5 35.e4 Ke6 36.Kf4 Kd7 37.f3 Rc5 38.Ke3 Rc3 39.Kf4 Rc5 40.Ke3 Kc6 41.Kd4 b5 (better 41...Rb5!?=) 42.ab6!+– a5 (42...Kb6 43.Ra6 Double attack) 43.b7! Rb5 (43...Kb7 44.Kc5 Deflection) 44.b8Q! Rb8 (44...Rb8 45.Ra5 Deflection) 45.Ra5 Rb7 46.Rc5 Kd6 47.Rd5 Ke6 48.Kc4 (48.Ke3 Rb3 49.Kf4 Rb7+–) 48...Rb1 49.Rd3 (49.Rf5!?+–) 49...Ke5= 50.Rd7 (50.Ra3 Rf1=) 50...Rf1 (50...Rc1 51.Kb4=) 51.Rg7 (51.Re7 Kd6 52.Rg7 Ke5+=) 51...Rf3= 52.Rg6 Rf4 53.Kd3 Re4 54.Rh6 Rg4 55.Rh8 Ke6 56.h6 Kf7 57.h7 Rh4 58.Ke3 (58.Rc8 Rh7 59.Rc7 Kg6 60.Rh7 Kh7=) 58...Kg7 59.Rd8 (59.Rg8 Kh7 60.Rg1 Kh6=) 59...Rh7 (59...Kh7 60.Rd7 Kg6 61.Rd5=) 60.Kf3 (60.Rd7 Kg6 61.Rh7 Kh7=) 60...Kg6 61.Rd6 (61.Kg4 f5 62.Kf3 Rh1=) 61...Kg5 62.Rd8 (62.Rd1 Rh3 63.Ke2 f5=) 62...Rh4 (62...Rh3 63.Ke2=) 63.Rg8 Kf5 64.Rc8 (64.Ra8 Rh3 65.Kf2 Kg5=) 64...Rh3 65.Kf2 (65.Ke2 Ke4=) 65...Rd3 (65...Ra3 66.Rc5 Kf4 67.Rc4 Ke5 68.Rc5 Ke6 69.Rc6 Kf7 70.Rc7 Kg6 71.Rb7=) 66.Rc6 (66.Ra8 Kg5=) 66...Kg5 67.Ke2 (67.Rc5 f5=) 67...Ra3 68.Kf2 (68.Rd6 f5=) 68...f5 69.Rc5 (69.Rc4 Ra1=) 69...Kg4 70.Rc6 (70.Rc1 Ra2 71.Kf1 f4=) 70...Ra2 71.Ke3?? (better 71.Kf1=) 71...f4-+ 72.Kd3 (72.Ke4 Re2 73.Kd4-+) 72...Ra3 (better 72...f3 73.Ke3 f2 74.Rf6-+) 73.Ke4?? (better 73.Ke2=) 73...Re3 (better 73...f3 74.Rf6 Kg3 75.Rc6-+) 74.Kd4 Re8 75.Rg6 Kh3 76.Rf6 0–1. Del Val,Josefa – Sonis,Luca (1725), 8th Lugano Switzerland, New Open–B, 2015.

5.d3 Nbd7 6.Nf3 Be7 7.0-0 0-0 8.c4 h6 9.Nbd2 Nh7 (9...c6 10.Qc2=) 10.e4 f5 11.d4 fe4 12.Ne4 Bf5 (12...Rf4 13.d5 Bg4 14.Nfd2=) 13.Ng3+= e4 14.Nd2 Ng5 (14...d5 15.Nf5 Rf5 16.Bg4+/-) 15.Qb3 (15.h4 Nh3 16.gh3 Bh3+–) 15...Bg6 (15...d5 16.h4 Nh7 17.Nf5 Rf5 18.Bg4+/-) 16.h4+/- Nf3?? (better is 16...Ne6 17.h5 Bf7+/-) 17.gf3+– (17.Bf3?! ef3 18.Nf3 Bh4=; 17.Nf3?! ef3 18.Bf3 Bh4 19.Bb7 Rb8 20.Bd5 Bf7 21.Bf7 Rf7+/-) 17...Bh4 18.fe4 Nf6 19.Bf3 Qd7 20.Bg2 Nh5 (20...Rae8 21.c5 Kh7 22.Rae1+–) 21.Nh5 Bh5 22.Rae1 White prepares e5 22...Rf4 (22...Bg5 23.c5 Bf7 24.Nc4+–) 23.e5 Raf8 24.e6 (24.Ne4!? Bf3 25.c5 Kh8+–) 24...Qe7 25.Ne4 Bf3 (25...Qe6 26.Ng3 Qg6 27.Bb7+– (27.Nh5?! Bf2 28.Rf2 Rf2=)) 26.Ng3 Bg4 (26...Bg2 27.Kg2 Bg3 28.fg3 (28.Kg3?? Qh4 29.Kg2 Rf2 30.Rf2 Rf2 31.Kg1 Qh2) 28...Rf1 29.Rf1 Rf1 30.Kf1 Qf6 31.Kg1 Qe6 32.Qc3+–) 27.d5 Rf3 (27...c6 28.c5 cd5 29.cd6 Qd6 30.Be5+– (worse is 30.Bd5 Bf3 31.Be4 Be4 32.Ne4 Qe7+–)) 28.Bf3 Bf3 29.Re3 Bg4 30.Qc3 (30.Ne4 Rf4+–) 30...Bf6 (30...Bg5 31.Re4 Bf3 32.Ree1+–) 31.Qc2 Bg5 32.Ree1 (better is 32.Ra3 Bh3 33.Re1+–) 32...Bf3 (32...Bh3 33.Nh5 Bf4 34.Qg6+–) 33.Qg6 (better is 33.Nf5 Rf5 34.Qf5+–) 33...Bf6 (33...Rf4 34.Bg7! Qg7 35.Qg7 Kg7 36.e7 Be7 37.Re7 Rf7 38.Nf5 Kf6 39.Rf7 Kf7 40.Re1+–) 34.Bf6 (better is 34.Nf5 Bb2 35.Ne7 Kh8 36.Nf5+–) 34...Rf6 35.Qd3 h5 (35...Bg4 36.Re3 Rf8 37.Qg6+–) 36.Re3 (better is 36.Nf5!? Rf5 37.Qf5 Bg4+–) 36...Bg4 37.Qe4 (better is 37.f3 Bh3 38.Rf2 Rh6+–) 37...Bh3 (37...c6 38.f3 Bh3 39.Rf2 cd5 40.cd5+–) 38.Nh5 Bf5 (38...Rh6 39.Rh3 Qg5 40.Qg2 Rh5 41.Re1+–) 39.Nf6 (39.Nf6 Qf6 40.e7 Qg6 41.Qg2+–) 1–0. De Kruif,K (1950) – Reutimann,H (1790), Guernsey GCI, 2011.

5.Nf3

5.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.e3 Be6 4.Nf3 Nf6 5.Be2).

5.Nf3 Be7 6.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 Be7 6.Be2).

5.Nf3 Be7 6.c4 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Be6).

4.Be2 Be7

5.a3 0-0 6.Nc3 a5 7.b5 d5 8.Nf3 Bd6 9.0-0+=.

5.b5 0-0 6.Nf3 (--> 4.b5 Be7 5.Nf3 0-0 6.Be2).

5.d3 0-0 6.Nd2 Nbd7 7.Bf3 c6 8.a3 Re8 9.Ne2 Nf8 (9...a5 10.0-0=+) 10.c4 Bf5 11.Ng3 ( 11.e4!? Be6 12.d4=) 11...Bd3–/+ 12.e4 (12.Qb3 Bg6–/+) 12...Ne6-+ 13.Qb3 Nf4 14.Nf5 b5 15.g3 bc4 16.Nc4 Bc4 17.Qc4 Ne6 (17...d5 18.Qc2 Ne6 19.0-0–/+) 18.Rd1 Qc7 19.Rc1 Rac8 20.Bd1 Bf8 21.Ba4 g6 22.Ne3 Qb6 23.Bb3 (23.Bc6 Bh6 24.Be8 Rc4 25.Nc4-+) 23...Bh6–/+ 24.Rc3 Rc7 (24...Qd4 25.Bc2–/+) 25.0-0 d5 ( 25...Qd4!? 26.Qe2 Rd7=+ (< 26...Qe4 27.Be6 c5 28.Bh3+–)) 26.ed5= cd5 27.Qd3? ( 27.Nd5!? Nd5 28.Qd5=) 27...Rc3–/+ 28.Bc3 d4 29.Nc4 Qb8 30.Bb2 e4 31.Qb1 (31…Qa8 32.Qa1=+) =+. Andersson,Lars H – Johnson,NL, corr ICCF III–720, 1989.

5.d3 a5 6.b5= c6 7.a4 Bd7 8.c4 Qc7 9.Nd2 d5 (better is 9...0-0!?=) 10.Ngf3+/- Bd6 11.Rc1 c5 (better is 11...e4!? 12.de4 de4+–) 12.cd5 Nd5 13.Ne4 f6 (13...0-0 14.d4 ed4 15.Bd4+–) 14.Nfd2 (14.d4!? ed4 15.Bd4 Bf5 16.Nd6 Qd6 17.Bc5 Qd7+–) 14...b6 (14...0-0 15.Nd6 Qd6 16.Ne4+–) 15.Nd6 Qd6 16.Nc4 Qe6 17.Bf3 Ra7 18.0-0 Ne7 (18...0-0 19.Bd5 Qd5 20.Nb6+–) 19.h3 (19.d4 0-0 20.d5 Qf5 21.Nb6 Ng6+–) 19...Nc8? (19...0-0 20.Bg4 f5 21.Bf3+–) 20.Bg4 (better is 20.d4!? e4 21.Bh5 g6+–) 20...Qe7 21.Re1 (better is 21.d4!? 0-0 22.de5 Bg4 23.hg4 fe5 24.Ne5 Nd6+–) 21...0-0 22.Qf3 Bg4 23.Qg4 Qd7 24.Qe2 Re8 25.Red1 Qc7 26.Rc2 Nd6 27.Nd2 (27.Bc3!?+/-) 27...Qe7 28.Qg4 Nd7 29.Nb1 f5 30.Qf3 Nf6 31.Rcd2 Rd7 32.Nc3 g6 33.Nd5 Nd5 34.Qd5 Qe6 35.Qe6 Re6 36.Kf1 Kf7 37.Ke2 Re8 38.g4 Ke6 39.f3 Red8 40.Bc3 e4 (better is 40...Rf7!?+=) 41.de4+/- fe4 42.Rd5 (42.f4!?+/-) 42...ef3 43.Kf3 Rf8 44.Ke2 (44.Kg2!?=) 44...Rf2+= 45.Kf2 (45.Ke1!? Rh2 46.Re5 Kf7 47.Red5+=) 45...Ne4–/+ 46.Ke2?? (better is 46.Kf3 Rd5 47.Rc1 Nc3 48.Rc3–/+) 46...Nc3-+ (46...Nc3 47.Ke1 Rd5-+ (47...Nd1 48.Rd7 Kd7 49.Kd1-+); 46...Rd5?! 47.Rc1–/+) 0–1. Souza,Kim Garcia De (1770) – Leszczynski,Taynara (1630), Championship Paranaense Women de Xadrez, 2016.

5.d3 Na6 6.Qd2+=.

5.d3 Bd7 6.Nd2 Bc6 7.Ngf3 b5 8.0-0 Nbd7 9.Nb3 Rb8 10.a3 0-0 11.Rc1 a6 12.Nh4 g6 13.Nf3 Re8 14.Na5 Ba8 15.d4 e4 16.Nd2 c5 17.c4 bc4 18.dc5 (18.Nac4 cb4 19.ab4 d5+= (worse is 19...Rb4 20.Ba3 Rb7 21.Nd6+=)) 18...dc5+= 19.Ndc4 cb4 20.ab4 Bb4 21.Nb3 Qe7 22.Ra1 Rec8 (22...Bb7!?+=) 23.Ra6= Nc5?? (better is 23...Bd5 24.Qd4 Rc7=) 24.Bf6+– (24.Rf6?! Nb3 25.Qb3 Bd5+–) 24...Qb7 (24...Qd7 25.Nc5 Qd1 26.Rd1 (worse is 26.Bd1 Bc5 27.Bg4 Rc6 28.Rc6 Bc6+–) 26...Bc5 27.Ne5+–) 25.Nd6 Qc7 (25...Na6 26.Nb7 Bb7 27.Be5+–) 26.Nc5 Bc5 27.Nc8 Rc8 28.Ra8! Ra8 29.Qd5 Rc8 (29...Re8 30.Rd1 Qb6 31.Be5+–) 30.g3 (30.Rc1 Qc6 31.Qe5 Qc7+–) 30...Bd6 (30...Qc6 31.Qg5 Bb4 32.Bg4+–) 31.Ra1 h5 32.Ra8 (32.Ra8 Ra8 33.Qa8 Bf8 34.Qe4+–) 1–0. Miranda Neto,Jayme Amorim (2115) – Lahud,Tarcisio Jose (1975), BRA–ch sf Vitoria, 2009.

5.d4 ed4 6.ed4 (6.Bd4 Nc6+=) 6...0-0 7.c4 (7.d5 Re8+=) 7...d5 8.c5 Bf5 9.Nc3 c6 (9...Re8 10.Nf3–/+) 10.Nf3 Nbd7 (10...Re8 11.0-0+=) 11.0-0= Ne4 (11...Re8 12.Re1=) 12.Bd3 Nc3 (12...Re8 13.Re1 Ndf6 14.Ne5=) 13.Bc3 Bd3 14.Qd3 Nf6 (14...Re8 15.Rfe1=) 15.Rfe1 Ne4 (15...Re8 16.b5=) 16.Bb2 (16.Nd2 Nc3 17.Qc3 Re8=) 16...Qc7 (16...Re8 17.b5=) 17.Ne5 (17.Nd2 Nd2 18.Qd2 Rfe8=) 17...f6 18.f3 Ng5 19.Ng4 Rae8 20.a4 (20.Qf5 b6=) 20...b6 (20...Qf4 21.Bc1 Qc7 22.Qf5+=) 21.Rec1 (21.a5 ba5 22.Ra5 Rf7+=) 21...Ra8 (21...a5 22.cb6 Qb6 23.b5+=) 22.Nf2 (22.a5 bc5 23.dc5 Rab8+=) 22...Ne6 (22...Rae8 23.b5 bc5 24.dc5=) 23.Re1+= Nf4 24.Qe3 (24.Qf5 Rfe8=) 24...Rfe8 (24...Rae8 25.Nd3 Nd3 26.Qd3=) 25.g3 Ng6 26.Qe6 Kf8 (26...Kh8 27.Qf7=) 27.Qf5 a5. Gutsko,Anastasiya – Gaevaia,Natasha, EU–ch U10 Girls, 1994.

5.d4 Nbd7 6.Nd2 (6.c4 0-0 7.a3 a5 8.Nd2 ab4 9.ab4+=; 6.a3 a5 7.b5 e4 8.d5 Nc5 9.Qd2+=) 6...0-0 7.a3 a5 8.c4 ab4 9.ab4+=.

5.c4

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

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

5.c4 0-0 6.Nf3 Bg4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0).

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

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

5.c4 Be6 6.Nf3 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 Be7 6.Be2).

5.d3 c6

6.a3 0-0 7.Nf3 a5 8.Nbd2 Na6 9.c4 Bg4 10.b5 Nc5 11.a4 Bf5 12.e4 Bg4 13.0-0 Ne6 14.Ne1 Be2 15.Qe2 Nd7 16.Nb3 Bf6 17.Nc2 Ndc5 18.Nc5 dc5 19.Rfd1 Qd6 20.Ne3 g6 21.Bc3 Bd8 (21...Nd4 22.Qe1=) 22.Qb2 f6 23.Rab1 Rf7 24.Qd2 Rd7 25.b6 Ra6 26.Ba5 Nf4 27.Rb3 Ne6 28.Rdb1 Ng5 29.R3b2 (29.Qe1 Ne6+=) 29...Qe6 (29...Qd3 30.Qe1 Qe4+= (worse is 30...Ne4 31.Rd1 Qd1 32.Nd1+/-)) 30.h4?? (better is 30.Qc3+=) 30...Ne4!–/+ 31.Qe1 (31.de4 Rd4 Double attack (31...Rd2 Pinning; 31...Rd2 Deflection; 31...Rd4 Decoy)) 31...Nd6 (31...Rd3!? 32.h5 f5-+) 32.h5+= Nf5 33.hg6 hg6 (worse is 33...Rd3 34.Nf5 Qf5 35.Rd1 Rd1 36.Qd1=) 34.Rd1 Nd4 35.Bc3 Ra4 36.Ra1 Ra1 37.Qa1 f5 38.Nf1 Qf6 39.Qa8 (39.Bd4 Rd4 40.Qa8 Qf7–/+) 39...Kg7 (39...Nf3 40.gf3 Qg5 41.Kh1-+) 40.Qc8 Rf7 41.Bd4 cd4 42.Ra2 ½–½. Arutyunova,Diana (2200) – Moskalets,Svetlana (2170), UKR games U16 B4 2nd, 2004.

6.a3 Nbd7 7.Nf3 a5 8.0-0 0-0 9.c4=.

6.Nf3 a5 7.a3 ab4 8.ab4 Ra1 9.Ba1+=.

5.Nf3

5.Nf3 (--> 4.Nf3 Be7 5.Be2).

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

5.Nf3 Nbd7 6.0-0 0-0 7.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Nbd7 7.0-0).

5.Nf3 Bf5 6.c4 Nbd7 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Bf5 5.Nf3 Nbd7 6.Be2 Be7).

4.Be2 g6

5.Nf3 e4 6.Nd4 c5 7.bc5 dc5=.

5.f4 Nbd7 6.Nf3 (6.fe5 de5 7.Nf3 e4+= (worse is 7...Bb4 8.Ne5 Ne5 9.Be5=)) 6...Qe7 (6...e4 7.Ng5 d5 8.a3+=) 7.fe5 de5 8.0-0 (8.b5 Bg7=) 8...Bg7 9.b5 0-0 (9...Qb4 10.Ba3 Qa4 11.Qc1+=) 10.Ba3+= Nc5 11.d4 (11.Nc3 e4 12.Nd4 Qe5=) 11...ed4= 12.ed4 (12.Bc5 Qc5 13.ed4 Qe7=) 12...Qe3+= 13.Kh1 Nce4 14.Qd3 (14.Bf8 Ng4 15.Qe1 Ngf2 16.Rf2 Nf2 17.Qf2 Qf2 18.Bg7 Qe2-+) 14...Qd3 15.Bd3 Re8 16.Nbd2 (16.Ne5 Bf5=) 16...Bf5+= 17.Nc4 (17.Ne4 Be4 18.Bc4 Bd5+= (worse is 18...Bc2 19.Ne5+–)) 17...Rad8 (17...Ng4 18.Kg1 Ng5 19.Ng5 Bd3 20.cd3 Bd4 21.Kh1 Ba1 22.Ra1–/+) 18.Nce5= Nd6 (18...Nc3 19.Bf5 gf5 20.Bb2 Nb5 21.a4+=) 19.Bd6 Bd3 (19...cd6 20.Bf5 de5 21.de5=) 20.Bc7 Bf1 21.Bd8 (21.Rf1? Rc8 22.Ba5 Rc2-+) 21...Bb5 22.Rb1 Ba6 (22...Nd7 23.Rb5 Ne5 24.de5 Rd8 25.Kg1= (25.Rb7? Rd1 26.Ng1 Be5-+)) 23.Bf6 Bf6 24.Nd7 (24.g4!?=) 24...Bd4+= 25.Nd4 Rd8 26.Nc5 Rd4 27.Na6 ba6 28.Kg1 (28.Rc1 Rc4+=) 28...Rc4 (28...h6 29.Rc1+=) 29.Rb2 a5 (29...Kg7 30.Kf2+=) 30.Kf2 Rb4 31.Rb4 (31.Rb3!?+=) 31...ab4–/+ 32.Ke3 f5 33.Kd4 a5 (33...g5–/+) 34.h4 (better is 34.c4 bc3 35.Kc3–/+) 34...Kg7 35.Kc4 (35.Kc5 f4 36.Kb5-+) 35...h6?? (35...f4 36.Kb5 Kh6 37.Ka5=) 36.c3? (36.Kb5 f4 37.Ka5-+) 36...bc3-+ 37.Kc3 g5 (better is 37...Kf6-+) 38.g3?? (38.hg5 h5 39.Kd4-+) 38...gh4 39.gh4 Kg6 40.Kd4 Kh5 41.Ke3 Kg4 (41...Kg4 42.Kf2 Kh4-+) 0–1. Schumacher,Dirk – Gottschalk,Jens (2105), Landesliga LL, 2000.

5.f4 ef4 6.ef4 Bg7 7.Nf3+=.

5.c4 Bg7

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

6.Nf3 0-0 7.0-0 Re8 8.Nc3 Nbd7 9.d4 e4 10.Nd2 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.0-0 e4 9.Nfd2 Re8 10.Nc3).

5.d4 ed4

6.Qd4 Bg7 7.Qc3 a5 8.b5 Nbd7 9.Nf3 Nc5 10.0-0 Na4 11.Qb3 Nb2 12.Qb2 0-0 13.Nd4 Qe7 14.Nc3 d5 15.Qb3 Rd8 16.Rad1 Qd6 17.Bf3 Ng4 18.g3 Nf6 19.Bg2 Bg4 20.f3 Bd7=+ 21.a4 Qc5 22.Rd3 Re8 23.Rfd1 Rad8 24.Nce2 h6 25.Nf4 c6 26.Bh3 Bh3 27.Nh3 –/+. combat – yaman, Live Game Caissa's Web, 2004.

6.Bd4 Bg7 7.Nc3 c6 8.Nf3 0-0 9.Rb1 b6 10.Kf1 c5 11.bc5 dc5= 12.Bf6 Qf6 13.Ne4 Qc6 14.Ng3 Bg4 15.h3 Be6–/+ 16.Ng5 Nd7 17.Bf3= Qc7 18.Ba8 Ra8 19.Ne6+/- fe6 20.Kg1 Rd8+= 21.Kh2 Nf6 22.Qe2 Nh5 23.f4 Nf6 24.Rhd1+– Nd5 25.Rd3?? Nc3 26.Rd8 Qd8=+ 27.Qf1 Nb1 28.Qb1 Qd2 29.Qb3 Kf7 30.Qd3 Qd3=+ 31.cd3 b5 32.Ne4= Bf8 33.Kg3 c4 34.dc4 bc4 35.Kf3 Bb4 36.Ke2 c3 37.Kd3+/- a5 38.Nc3 Kf6 39.a4 h6 40.g4 g5 41.Ne4 Kg6 42.fg5 hg5 43.Ng3 Bd6 44.Ne2 Kf6 45.Ke4 e5 46.Nc3 Ke6 47.Nd5 Bc5 48.Nc3 Bb4?? 49.Nb5 Bd2 50.Nc7 Kd6 51.Ne8 Kc5 52.Ke5 Be3 53.Kf5 Kb4= 54.Nd6 Ka4 55.Nb7 Kb4 56.Na5 Ka5 57.Kg6. revbodio (1850) – Sir (2015), Live Game Caissa's Web, 2007.

5.Nf3 Bg7

6.0-0 0-0 7.c4 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.0-0).

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

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

6.d4 e4 7.Nfd2 0-0 8.c4 c6 9.Nc3 d5 10.0-0 Na6 (10...Bf5 11.cd5 cd5 12.Rc1+=) 11.b5 (11.cd5 cd5 12.b5 Nc7+=) 11...Nc7 (11...cb5 12.cb5 Nc7 13.Ba3+=) 12.bc6 bc6 13.Rb1 Bf5 (13...Re8 14.Ba3+=) 14.Ba3+/- Re8 15.Qa4 Bd7 16.Qa5 (16.Bd6 Ne6 17.c5 a5+/-) 16...dc4+= 17.Bc4 Ncd5 18.Qd8 Rad8 19.Na4 Bc8 (19...Bf5 20.Rfc1+/-) 20.Rfc1 Bh6 (20...Bg4 21.Nc5+/-) 21.Rb3 Ng4 (21...Bf5 22.Rcb1+/-) 22.Nf1 (22.Nc5 Nde3 23.fe3 Be3 24.Re3 Ne3 25.Nce4 Nc4 26.Rc4 Re6+/-) 22...f5 23.h3 White gets the initiative 23...Ngf6 24.Be2 Re6 25.Nc5 Re7 26.Na6 Re6 27.Nb8 Bd7 28.Nd7 (28.Bc5 a5+/-) 28...Rd7 29.Ba6 Rc7 (29...Nb6 30.Bc5 Nfd5 31.a4+=) 30.Rb7 Rb7 (30...Bf8 31.Bf8 Kf8 32.Rc7 Nc7 33.Bb7+/-) 31.Bb7 f4 32.Bc8 (32.ef4 Nf4 33.Rc2 Bf8 34.Bf8 Kf8+/-) 32...Re8+= 33.Rc6 fe3 34.fe3 Ne3 (worse is 34...Be3 35.Ne3 Ne3 36.Be6 (36.Rf6?! Rc8 37.Bc5 Rb8+=) 36...Kg7 37.Rc7 Kh8 38.Bf7+–) 35.Be6 Kg7 36.Ra6 Ra8 37.Bd6 Ned5 38.Be5 Nb4 39.Rd6 Bg5 40.g3 With the idea h4 40...Rf8 41.h4 Bc1 42.g4 Kh6 43.Ng3 Be3 (43...Ne8 44.g5 Bg5 45.hg5 Kg5 46.Ne4 Kh6 47.Rd7+–) 44.Kg2 Ne8 45.Rd8 (45.Rd7 Nc6+–) 45...Nd3 46.g5 Bg5 47.hg5 Kg5 48.Ne4 Kh6 49.Kg3 Ne5 50.de5 (50.de5 Nf6 51.Rf8 (51.Nf6?! Rd8 52.Kf4 Kg7+/-; 51.ef6?! Rd8 52.Kf4 Rd1+–) 51...Ne4 52.Kg2+–) 1–0. Pommerel,Wim – Dopper,Johan, corr NBC KE02, 1999.

4.Ne2 Bg4

5.c4 Be7 6.Nbc3 0-0 7.Qc2 c6 8.d4 Bh5 (8...Na6 9.b5 Nb4 10.Qd2 ed4 11.Nd4=) 9.Ng3 Bg6 10.Bd3 ed4 11.ed4 d5 (11...Bd3 12.Qd3 d5 13.c5=) 12.c5 Na6 13.a3 Nc7 14.0-0 Re8 15.Rae1 Qd7 16.Nce2 (16.Nf5 Ne6=) 16...Bf8 (16...Bd3 17.Qd3 a5 18.ba5 Ra5 19.Nf5=) 17.Nf4 Re1 18.Re1 Re8 (18...Bd3 19.Nd3 Re8 20.Ne5+=) 19.Rb1 (19.Re8 Qe8 20.Ng6 fg6+/-) 19...Qg4 (19...Bd3 20.Nd3 Qg4 21.Ne5=) 20.Ng6+= hg6 21.h3 Qh4 22.Bf1 Be7 23.Re1 Bd8 24.Re8 Nfe8 25.a4 Bf6 26.Ne2 Ne6 Will d4 fall? 27.Qd2 N8c7 28.g3 (28.Qe3 a5 29.ba5 Nc5 30.dc5 Bb2=) 28...Ng5 29.Bg2 (29.Qc2 Qh5+= (29...Nh3? 30.Kh2 Qh5 31.Bh3+–)) 29...Qh5 (worse is 29...Nh3 30.Kh2 Qg5 31.f4 Nf4 32.Nf4+/-) 30.g4 Qh4 31.Qe3 Nge6 32.Kf1 g5 33.Bc3 (33.Ng3!?=) 33...Qh7+= 34.Kg1 (34.Qd2 Qb1 35.Qe1 Qb3+=) 34...Qc2–/+ 35.Bf1 (35.Kh2 Qa4 36.Ng3 Nb5-+) 35...Qa4-+ 36.f4? (better is 36.Qg3-+) 36...gf4 37.Nf4 (37.Qd3-+) 37...Bg5 38.Qd3 Bf4 39.Be1 (39.Bd2 Bd2 40.Qd2 Qa1-+) 39...Nb5 40.h4 (40.Qe2 Nbd4 41.Qd3 Qa2-+) 40...Qa3 (better is 40...Nbd4 41.Bg2-+) 41.Qb1 (41.Qa3 Na3 42.Kf2 Nd4-+) 41...Nbd4 (41...Qe3 42.Bf2 Bh2 43.Kh2 Qf2 44.Bg2 Nbd4 45.Qf1 Nf3 46.Kh1 Qh4 47.Bh3-+) 42.Bf2 (42.Qd3 Qb2 43.Bg2 Nc2-+) 42...Nf3 43.Kg2 Nd2 44.Qf5 (44.Qd1-+) 44...Qf3 45.Kg1 Ne4 46.Bd4 g6 0–1. Goergens,Michael (2085) – Poenisch,Egmont (2135), Oberliga Ost A, 2005.

5.d4 Nbd7+=.

5.f3 Be6 6.Ng3 (6.a3 a5+=) 6...Nc6 (6...Nbd7 7.f4 Nb6 8.Be2+=) 7.b5= Ne7 (7...Na5 8.d4=) 8.c4 (8.Be2 Ned5=) 8...Nf5 (8...Ng6 9.d4=) 9.Nf5= Bf5 10.Be2 (10.d4 ed4 11.Bd4 a6=) 10...a6 11.e4 (11.d4 ab5 12.e4 Be6=) 11...Bd7 (11...Be6 12.ba6 Ra6 13.d4=) 12.a4 (12.d4 ed4 13.Bd4 Nh5=) 12...ab5 (12...Nh5 13.g3=) 13.ab5 c6 (13...Ra1 14.Ba1 Qa8 15.Bc3+=) 14.Nc3 (14.Ra8 Qa8 15.d4 ed4 16.Bd4 Be7+=) 14...Ra1= 15.Qa1 cb5 (15...Nh5 16.g3=) 16.Nb5+= Bb5 (16...Be7 17.d4+=) 17.cb5+/- d5 (17...Be7!?+/-) 18.Be5+– de4 19.Bf6 Qf6 (19...gf6 20.fe4 Bb4 21.Qb2+–) 20.Qa8 (20.Qf6 gf6 21.fe4 Bb4+–) 20...Qd8 21.Qb7 (21.fe4?? Qa8 22.0-0 Qa4-+) 21...ef3 (21...f5 22.b6 Bb4 23.Bb5 Kf8 24.0-0 (24.fe4?? Qd2 25.Kf1 Qe1) 24...ef3 25.Rf3+–) 22.Qe4 (22.Bf3 Qe7 23.Qe7 Be7 24.Bc6 Kd8+–) 22...Be7+/- 23.gf3 (better is 23.Qc6!? Kf8 24.Qf3 Bh4 25.g3+/-) 23...0-0= 24.Rg1 (24.Kd1 Re8+=) 24...Bh4 (24...Re8 25.Qc4=) 25.Kf1+= Bg5 (25...Re8 26.Qf4+=) 26.f4 (26.d4 Bf6 27.Bd3 g6+=) 26...Bh4 (26...Re8 27.Qc4 Bf6 28.Bd3=) 27.Bd3 (27.Qd3 Qf6 28.Qe3 Rd8+=) 27...Qa5?? (better is 27...g6+=) 28.Qh7 1–0. Wall,Bill – WoodChip, internet, 2002.

5.h3 Be6 6.Ng3 (6.Nbc3 Nc6+=) 6...Qd7 (6...Be7 7.Bb5 c6 8.Be2+=) 7.c4 (7.Nc3 Be7+=) 7...Be7 (7...Nc6 8.b5 Nd8 9.d4 ed4 10.Bd4=) 8.d4 ed4 (8...d5 9.c5 e4 10.Be2+=) 9.ed4 0-0 (9...d5!? 10.Qb3 0-0+=) 10.d5= Bf5 11.Nf5 Qf5 12.Bd3 Qh5 (12...Qf4 13.Qd2 Qd2 14.Kd2+=) 13.Qc2 (13.Qh5 Nh5 14.0-0 Nf4+/-) 13...Re8+= 14.0-0 Nbd7 (14...a5 15.a3+=) 15.Nd2 (15.Be2 Qg5+=) 15...Ne5 16.Rae1 Nd3 17.Qd3 Qg6 (17...a5!? 18.ba5 Nd7+=) 18.Qg6+/- fg6 19.Re6 Nh5 (19...c6 20.Rfe1 Kf7 21.Nf3+/-) 20.Rfe1+– Kf7 21.g3 (21.Bd4 Nf4 22.R6e3 a5+/-) 21...Bf8 (21...Bf6!? 22.Bf6 gf6+/-) 22.Nf3 (22.Ne4 Be7+–) 22...h6 (22...Be7 23.Bd4+/-) 23.Nd4 c5 24.Nb5 cb4 (24...Rad8 25.bc5 dc5 26.Re8 Re8 27.Re8 Ke8 28.Na7+–) 25.Nc7 Re6 (25...Rec8 26.Na8 Ra8+–) 26.de6 (26.Re6?! Rc8 27.Nb5 Nf6=; 26.Ne6?! Re8+/-) 26...Ke7 27.Na8 Kd8 (27...Nf6 28.Nc7+–) 28.Bd4 b6 29.Rb1 (29.g4 Nf4 30.h4 Ke7+–) 29...Be7 30.Rb4 Kc8 (30...Bf6 31.Bb2+–) 31.Ra4 Kb7 32.Nc7! Kc7 A deflection (32...Bf6 33.Nb5 a6 34.Nd6 Kc6 35.Bf6 Kd6 36.Bd4+–) 33.Ra7 A double attack 33...Kd8 (33...Kc6 34.Re7 g5 35.Rd7+–) 34.Bb6 (34.Bb6 Kc8 35.Re7+–) 1–0. Wall,Bill – Eldon, internet, 2003.

5.h3 Bh5 6.g4 Bg6 7.Ng3 a6 (7...Nc6 8.b5 Nb4 9.d3=) 8.Bg2= Nc6 9.a4 (9.f4 h5= (worse 9...Nb4 10.f5+–)) 9...Qd7 (9...Nb4 10.d3–/+) 10.d3 (better 10.f4!? ef4 11.ef4+=) 10...Nb4–/+ 11.Bb7 (11.f4 ef4 12.ef4=) 11...Ra7 (11...Rb8 12.Bf3 Qe6=+) 12.Bf3= Be7 13.0-0 (13.h4 h6=) 13...0-0 14.c3? (better 14.h4 h6 15.h5–/+) 14...Nd3-+ Black gets the initiative 15.Ba3 e4 16.Be2 (better 16.Ne4 Ne4 17.Qd3-+) 16...Nc5?? (better 16...Qc6-+) 17.Bc5= dc5 18.Qd7 Nd7 19.Nd2 Bf6 (better 19...Rb8+=) 20.Rac1 (better 20.Nde4 Re8 21.Rfd1+–) 20...Re8=+ 21.Kg2 (21.a5!?=+) 21...Nb6–/+ 22.Rh1? (better 22.a5!? Na4 23.Nb1–/+) 22...Na4-+ 23.h4 h6 (23...Bc3?! 24.Nc4 Bb4 25.h5=+; 23...Nc3 24.h5 Rd8 25.Rc2=) 24.g5 (24.h5 Bh7 (24...Bc3?! 25.Bd1 Bd2 26.Ba4+=) 25.Ra1 Nc3 26.Ra6 Rb7-+) 24...hg5 25.hg5 Bg5 (25...Bc3 26.Bd1 Bd2 27.Ba4 Bc1 28.Be8-+) 26.Bh5 (26.Bd1 Nb2 27.Bh5 Bh5 28.Rh5 Bh6–/+) 26...Bh5 (better 26...Bh7!? 27.Bd1 Nb2-+) 27.Rh5–/+ Bh6 28.Nge4 Re6 (28...a5 29.Ra1 Nb2 30.Nc5–/+) 29.Rch1 (29.Ra1 Nb2=+) 29...Rg6 30.Kf1 (30.Kf1 a5 31.Ke2–/+). aravind555 – Jin38, lichess.org, 2019.

4.Nf3 a6

5.a3 Nc6 6.c4 Bg4 7.Be2 Be7 8.d4+= ed4 9.Nd4 Be2 10.Qe2 0-0 11.0-0 Ne5 12.Rd1 Qb8 13.Nf5+/- Qd8?? 14.Be5+– Qd7 15.Ne7 Qe7 16.Bf6 Qf6 17.Ra2 Qe6 18.Nc3 a5 19.Nd5 Rfc8 20.b5 h6 21.b6 1–0. juanpacio (1695) – chessotka (1605), internet, 2006.

5.a4 c6 6.Be2= Be7 (6...e4 7.Nd4=) 7.h3 (7.0-0 0-0=) 7...e4+= 8.Nd4 (8.Nh2 0-0+=) 8...c5 (8...d5 9.Bc3+=) 9.bc5 dc5 10.Nb3 b6 (10...Be6 11.0-0+=) 11.0-0= 0-0 12.d3 (12.f3 Bb7=) 12...ed3 (12...Re8 13.N1d2=) 13.cd3 (better is 13.Bd3 Nc6 14.Qf3=) 13...Qd5?? (better is 13...Nc6=) 14.Bf3+– Qg5 15.Ba8 Bh3 16.Bf3 (16.Nc3 Rd8+–) 16...Nbd7 (16...Bf5 17.Qc2+–) 17.N1d2 h5 (17...Rb8 18.Qe2+–) 18.Ne4 (18.d4 h4+–) 18...Ne4 19.Be4 Nf6 20.Bf3 h4 21.Rc1 (21.Qc2 Qg6 22.Kh1 Be6+–) 21...Bg2 (21...Rd8 22.d4+–) 22.Bg2 h3 23.Qf3 hg2 24.Qg2 Ng4 (24...Qf5 25.Rfd1+–) 25.Rc4 (25.a5 b5+–) 25...f5 26.f3 (better is 26.Rc2 Qh6 27.a5+–) 26...Qe3+/- 27.Kh1 (better is 27.Rf2!? Qf2 28.Qf2 Nf2 29.Kf2+/-) 27...Qh6= 28.Kg1 Qe3 29.Rf2 Nf2?? (better is 29...Qf2 30.Qf2 Nf2 31.Kf2 Kf7+/-) 30.Qf2 (30.Qg7) 30...Qh6 (better is 30...Qd3 31.Rc3 Qd1 32.Qf1 Rd8 33.Qd1 Rd1 34.Kf2 Bf6–/+) 31.Rh4?? (better is 31.a5 Rd8 32.d4+=) 31...Bh4-+ 32.Qg2 (32.Qe2 Bg5 33.Kg2 Be3-+) 32...Re8 (32...Re8 33.Bc3 Be1-+) 0–1. GuestNQZQ – GuestHWNW, freechess.org, 2016.

5.a4 e4 6.Nd4+=.

5.a4 Be6 6.c4 (6.Nc3 d5=) 6...Be7 (6...Nc6 7.b5 Nb4 8.Bc3=) 7.d4 ed4 (7...0-0 8.Nc3+=) 8.Nd4= 0-0 (8...d5 9.Bc3=) 9.Be2 (9.Bd3 a5 10.b5 Nbd7=) 9...b6 (9...d5 10.b5=) 10.b5 d5 (10...ab5 11.cb5 d5 12.0-0+=) 11.0-0 (11.Nc3 ab5 12.ab5 Ra1 13.Qa1 Bc5 14.cd5 Bd4 15.de6 Bc3 16.Bc3 fe6+/-) 11...dc4 (11...ab5 12.ab5 Ra1 13.Ba1+=) 12.Ne6+= White fights for the Initiative 12...Qd1 13.Rd1 fe6 14.Bc4 Kf7 15.Nd2 ab5 16.ab5 Nbd7 (better is 16...Ra1!? 17.Ra1 c5+/-) 17.Nf3+– Nc5 18.Bd4 (18.Ng5!? Kg6 19.Ne6 Ne6 20.Ra8 Ra8 21.Be6 Bd6+–) 18...Ra1 (18...Nfd7 19.Kf1+/-) 19.Ra1 Re8 (19...Nfd7!?+/-) 20.Bc5+– Bc5 21.Ng5 Kg6 22.Ne6 Re7 (22...Bd6 23.f4+–) 23.Nc5 bc5 24.Ra7 (24.Ra6 Rd7 25.Kf1 Rd1 26.Ke2 Rd6+–) 24...Rd7 25.Ra6 (better is 25.f3+–) 25...Rd6? (better is 25...Rd1 26.Bf1 Kf7+/-) 26.Rd6 cd6 27.Be6 c4 28.Bc4 Nd7 29.f4 Nb6 (29...Kf6 30.e4+–) 30.Bd3 Kh6 31.e4 (31.g4 g6+–) 31...g6 (31...Kg6 32.e5 Kf7 33.ed6+– (33.Bh7?! de5 34.g3 Ke6+–)) 32.e5 (32.Kf2!? Kg7+–) 32...de5 33.fe5 Kg7 34.Kf2 Kf7 (34...Nd7 35.e6 Nb6 36.Bc2+–) 35.Ke3 Ke6 36.Kd4 Kf7 (36...Kd7 37.Be4+–) 37.Bc4 (37.Kc5!? Na4 38.Kd6 Ke8+–) 37...Ke7 38.Kc5 (38.Kc5 Nd7 39.Kb4 Ne5 40.Bg8+–; better is 38.g4 g5 39.Bd3+–) 1–0. Trkn – Arno, itsyourturn.com, 2000.

5.a4 Bf5 6.Be2 Nbd7 7.c4 Be7 8.a5 0-0 9.0-0 Re8 10.d3 Bf8 11.e4 Be6 (11...Bg4 12.Nc3=) 12.Ng5+= Qe7 13.Nc3 g6 14.Ne6 Qe6 15.Qd2 Bg7 16.Qd1 Nf8 (16...Bf8!?=) 17.Nd5 Nd5 18.cd5 Qd7 19.Qd2 f5 20.Rac1 f4 (20...Rac8 21.Rc4+=) 21.Rc4+/- g5 (21...Rac8!?+/-) 22.Rfc1+- Rac8 (22...Re7 23.Qc3+-) 23.Qd1 Qe7 (23...Qd8 24.Bg4 Nd7 25.Qc2+-) 24.Bg4 Ng6 (24...Rb8 25.Rc7 Qf6 26.Qe2+-) 25.Be6 Kh8 26.Qg4 Nh4 (26...Rb8 27.Rc7 Qf6+-) 27.Bc8 Qf6 (27...c6 28.dc6 bc6 29.Rc6+-) 28.Bb7 f3 29.g3 Ng2 30.Rc7 Re7 (30...Kg8 31.Ba6 Kh8 32.Rc8+-) 31.Re7 Qe7 32.Rc8 Bf8 33.Qf3 Ne1 1-0. onur604 (2320) - Razaq (2110), Casual Rapid game, lichess.org, 2021.

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

5.Bc4 Be7 6.Bf7?? (better 6.Bb3=+) 6...Kf7-+ 7.d4 e4 8.Ng5 Kf8 (8...Kg6 9.h4 d5 10.a3-+) 9.d5 Nd5! 10.Qd5 Ke8?? (better 10...Bg5 11.Qe4 Bf6-+) 11.Bf6 Rg8 (11...Bf6 12.Qf7 Mate attack; 11...gf6 12.Qf7 Double attack) 1-0. blitzbullet (2565) - allyouneedisluft (2690), Rated Crazyhouse game, lichess.org, 2018.

5.Be2 b5 6.a4 c6 7.0-0 Bb7 8.ab5 ab5 9.d3 Nbd7 10.Nbd2 Be7 11.c4 bc4 12.dc4 Ra1 13.Ba1 0-0 14.Qb3 c5 15.bc5 Nc5=+ 16.Qb5. yannigator (1920) – justenest (2090), net–chess.com, 2010.

5.Be2 Nd5 6.0-0 Be7 7.a3= Be6 8.d4+= e4 9.Nfd2 Nd7 (9...Nd7 10.c4 N5b6+/-; 9...Nf6!?+=). makaveli1982 – theknightman, internet, 2007.

5.Be2 Qe7 6.0-0 Nc6 7.a3 b5 8.d4 Bb7 9.Nbd2 Rd8 10.c4 Qd7? 11.d5 Na7+/- 12.e4 Be7 (12...Be7 13.Qb3 c6+/-; 12...c6 13.dc6 Bc6 14.Qc2+=). makaveli1982 – pegasus, internet, 2007.

5.Be2 Be7 6.Nc3 b5 7.a4= c6 8.ab5+/- Bb7 9.bc6 Nc6 10.b5 ab5 11.Ra8 Qa8 12.Bb5 0-0 13.0-0 Na7 14.Be2 Bc6 15.d3 e4 16.de4 Ne4 17.Ne4 Be4 18.Qd4?? Bf6-+ 19.Qb4 Bb2?? 20.Qb2+/- Nc6 21.Ra1 Qc8 22.Ra4 d5 23.Ng5 Bg2? 24.Kg2+– Qd8 25.Nf3 Qd6 (25...Qd7 26.Nd4 Ne5 27.Qb5+–) 1–0. Beau – pbv1, Live Game Caissa's Web, 2005.

5.Be2 Nc6

6.a3 Bf5 7.0-0 Be7 8.d3 0-0 9.c4 d5 (better is 9...Re8=) 10.cd5+– (10.Be5?! dc4 11.dc4 Ne5 12.Ne5 c5+=) 10...Nd5 11.Nc3?? (better is 11.e4+–) 11...Nc3= 12.Bc3 e4 13.de4 Be4 14.Qd8 Rad8 15.Rfd1 Bc2 16.Rd8 Rd8 17.Rc1 Be4 18.Nd4 Nd4 19.Bd4 Bd6 20.f3 Bg6 21.Kf2 Re8 (21...Bh2? 22.g3 Rd7 23.Kg2 Bg3 24.Kg3+–) 22.g3 Re6 23.h4 f5? (23...Re7 24.Rd1+=) 24.f4 (24.Bc4 Bf7 25.Be6 Be6+–) 24...Re4? (better is 24...Re7+=) 25.Bf3+– Re7 26.Bb7 Bf7 27.Ba6 h6 28.Bc4 Bc4 29.Rc4 Kf7 30.Bc5 Bc5 31.Rc5 Rd7 32.Rf5 Kg6 33.Rc5 1–0. Fournier,Frederic (1670) – perico38, Active, 2006.

6.a3 g6 7.0-0 Bg7 8.d3 0-0 9.Nfd2 (9.h3 Qe7+=) 9...Be6 10.e4 (10.c4!?+=) 10...Qd7 11.c3 d5 12.ed5 Nd5 13.c4? (better is 13.Ne4!?–/+) 13...Nf4-+ 14.Nb3 Rad8 (better is 14...b6!?-+) 15.Nc5–/+ Qd6 (better is 15...Qc8!? 16.g3 Ne2 17.Qe2 Bh3-+) 16.Nb7+= Ne2 17.Qe2 Qd3 18.Qd3 Rd3 19.Nc5 Rd6 20.Ne6 Re6 21.Nc3 e4 22.Rab1 Rfe8 (22...Rd8!?+=) 23.Nd5= Rc8 24.Bg7 Kg7 25.a4 White plans b5 (25.Rfe1 Nd4=) 25...Ne7 (25...Ne5 26.b5=) 26.Ne7 Re7 27.b5 Ra8 28.Rb3 (28.c5 ab5 29.ab5 Re5=) 28...Rd7 (28...ab5 29.ab5 Re5 30.Rc3+=) 29.g3 (29.c5 ab5 30.ab5 Ra2=) 29...Rd4 30.Rc1 f5 (30...a5!?+=) 31.a5+= White prepares b6 31...ab5 (31...Rb8!?+=) 32.cb5+/- Ra5? (better is 32...Rd7!? 33.a6 Kf6+/-) 33.Rc7+– Kh6 34.Rb2 (34.b6 Rd3 35.Rb1 Rd8+–) 34...Ra8? (better is 34...Raa4 35.Kg2 Rab4+/-) 35.b6+– Rb8 36.b7 Rdd8 37.Kg2 Re8 (37...Rg8 38.Rd2+–) 38.h4 (38.Rd2 Rg8+–) 38...Rg8 39.Rd2 Rgf8?? (better is 39...Rg7 40.Rg7 Kg7 41.Rd7 Kf6 42.Rh7 Ke5+–) 40.Rdd7 Rh8 41.Kh3 Rbf8 42.Re7 Rb8 43.g4 fg4 44.Kg4 Rbf8 45.Re4 Rb8 (45...Rf2 46.Rc8 Rg2 47.Kh3 Rb2+–) 46.Ree7 Rbg8 (46...Rbe8 47.Re8 Re8+–) 47.f4 Rf8 48.Red7 Rfg8 49.Rf7 Rd8 50.Rg7 Rdf8 51.Rce7 Rd8 52.Ref7 1–0. Tagirov,Kajum K (1885) – Sarvaretdinova,Nursel, Memorial Siamidi, 2009.

4.Nf3 b6

5.b5 a6 6.a4 a5 7.Be2 Be7 8.0-0 0-0 9.c4 Bb7 10.Ne1 Nbd7 11.d3 Nc5 12.Bf3 Bf3 13.Nf3 Qd7 14.d4+= ed4 15.Bd4 Nce4 16.Nbd2 d5 17.cd5+= Qd5 18.Ne4 Qe4 19.Rc1 Rac8 20.Qe2 Ng4 21.Rc4 Qg6 22.Ne5 Ne5+= 23.Be5 The backward pawn on c7 becomes a target 23...Bd6 24.Bd6 Qd6 25.Rd1 Qe6 26.Rc6 Qe7 27.g3 (27.Rdc1 Rfd8+/-) ½–½. valpa – CYTO, playchess.de, 2002.

5.b5 Bb7 6.c4 Nbd7 7.Be2 Be7 8.0-0 0-0 9.Nc3 Nc5 10.d4 ed4 11.ed4 Ne6 12.d5 Nf4 13.Qc2 Bc8 14.h3 g6 (14...a6!?+=) 15.Nd4+/- Bd7 16.Rfe1 Re8 17.Bf1 Qc8 18.Re3 Bf8 19.Rae1 Re3 20.Re3 (20.fe3 N4h5+/-) 20...N4h5 21.Ne4 Ne4 22.Qe4 Bg7 23.Bc3 a6 24.a4 ab5 25.ab5 Qf8 26.g4 Nf6 27.Qf3 Re8 28.Ne2 Re3 29.Qe3 Qe8 30.Qe8 Ne8 31.Kg2 Bc3 32.Nc3 f5 33.g5 Kg7 34.Kg3 Kf7 35.Kf4 Kg7 36.h4 h5 37.Ne2 Kf7 38.Ng3 Ng7 39.Be2 Ke7 40.Bd3 Kf7 ½–½. Stecyk,Jozef (1730) – Orlowski,Miroslaw (1610), 55 Ogolnopolski Turniej Szachowy Zamosc Poland, 2013.

5.d4 ed4 6.Nd4 Bb7 7.Bb5 c6 8.Qf3 (8.Bd3!?=) 8...d5 (8...Qc8!? 9.Nc6 Nc6 10.Bf6 gf6 11.Qf6 Rg8-+) 9.Bd3+= Bb4 10.Nd2 0-0 11.Nf5 Re8 12.Ng7 (better is 12.Nh6! Kf8 13.Bf6 Qf6 14.Qf6 gf6 15.Ke2+= (15.Bh7? Kg7-+)) 12...Bd2–/+ 13.Kd2 Kg7 14.Qh5 (better is 14.Bh7 Nbd7 15.Bf5–/+) 14...Kf8?? (better is 14...h6-+) 15.Qh6+– Kg8 (15...Ke7 16.Bf6 Kd7 17.Bf5 Kc7 18.Bd8 Rd8 19.Qh7 Rf8+–) 16.Bf6 (16.Bf6 Qf6 17.Bh7 Kh8 18.Qf6 Kh7 19.Qf7 Kh6 20.g4 Re7 21.g5 Kg5 22.Rag1 Kh4 23.Qe7 Kh5 24.Qg5#; 16.Qf6?! Qf6 17.Bf6 Nd7=) 1–0. Leon Manas,J (1720) – Peinado Santana,Victor, Open, Las Palmas ESP, 2009.

5.Be2 Bb7

6.0-0 a5 7.ba5 Ra5 8.Bc3=.

6.0-0 c5 7.bc5+= bc5 8.d4 (8.Na3 Nc6=) 8...e4 (8...cd4 9.ed4 Qb6=) 9.Bb5 (better is 9.Nfd2+=) 9...Nc6?? (9...Bc6 10.Bc6 Nc6 11.Nfd2+=) 10.Nfd2 (10.d5 Qb6 11.Bc6 Bc6 12.Bf6+= (12.dc6? Qb2 13.Nbd2 ef3-+)) 10...cd4 (10...a6 11.Ba4=) 11.ed4 (11.Bd4 Be7+=) 11...a6= 12.Ba4 (12.Bc6 Bc6 13.d5 Bd5=) 12...Qb6 (12...d5!?=) 13.Nc4+= Qb4 14.Bc6 (better is 14.Bb3!? Qb5 15.Nc3+/-) 14...Bc6= 15.Nba3?? (15.Nbd2 Bd5 16.c3 Qb7=) 15...Bd5?? (better is 15...d5 16.c3 Qb7-+) 16.c3= Qb7 17.Qe2 (17.Rb1 Be7=) 17...Bc4 (17...Be6 18.Ne3+=) 18.Nc4= d5 19.Ne5 Bd6 (19...Rb8 20.Rab1=) 20.c4 Be5 (better is 20...0-0!?=) 21.de5+/- Nd7 22.cd5 Qd5 23.Rfd1 Qe6 (better is 23...Qb7+/-) 24.Ba3 (24.Qe4 0-0 25.Rd6+–) 24...Ne5?? (better is 24...Qe5 25.Rab1 f5+=) 25.Qe4+– f5 (25...Nc6 26.Qa4 a5+–) 26.Qa8 Kf7 27.Qh8 Ng4 28.Qf8 (28.Bf8 Qe5 29.Rd7 Ke8 30.Bg7 Kd7 31.Be5 Ne5 32.Qe5 f4 33.Rd1 Kc6 34.Rd6 Kb7 35.Qe7 Kc8 36.Rd8) 28...Kg6 29.Rd6 1–0. mtr – bradleycj, internet, 2001.

6.0-0 Nbd7 7.c4 Be7 8.d4 e4 9.Nfd2 d5 10.c5 (10.Qb3 0-0 11.Nc3 c6+/-) 10...bc5 (10...a5!? 11.a3 ab4 12.ab4 Ra1 13.Ba1 0-0=) 11.bc5+= (worse is 11.dc5 a5 12.a3 ab4 13.ab4 Ra1 14.Ba1 c6=) 11...c6 12.Nc3 Qc7 13.a4 (13.Qc2 0-0+=) 13...a5 (13...Nf8 14.f3 ef3 15.Nf3=) 14.Re1 (14.f3 ef3 15.Rf3 0-0+=) 14...h5 (14...0-0 15.Rb1=) 15.f3 ef3 16.Bf3 (16.Nf3 0-0=) 16...Ng4 (16...Ba6 17.h3 0-0 18.e4 de4 19.Nde4=) 17.Nf1 (17.g3 0-0=) 17...f5 (17...Ba6 18.e4 Nc5 19.ed5=) 18.Bc1 (better is 18.Qc2!? g6 19.h3=) 18...Ba6 19.Be2 Ndf6 (19...Be2!? 20.Ne2 Bh4+=) 20.Ba6+= Ra6 21.Qd3 Qc8 22.h3 Nh6 23.Nd2 Ra7 24.Rb1 g5 (24...0-0 25.Ne2=) 25.e4 (25.Rf1!?+=) 25...fe4= 26.Nde4 (26.Qg3!? Rb7 27.Qg5=) 26...de4 27.Ne4 Ne4 28.Qe4 Nf7 (better is 28...Nf5!? 29.Rb6 Rc7 30.Bg5 0-0–/+) 29.Rb6 (better is 29.Qg6 Kf8 30.Rf1+/-) 29...Rc7? (better is 29...Rh6 30.Qb1 Qd7 31.Rb8 Nd8 32.Rd8 Qd8 33.Bg5 Qd4 34.Kh1 Qb4 35.Bh6 Qb1 36.Rb1 Rd7=) 30.Rc6+– Qb7 31.d5?? (better is 31.Rc7 Qc7 32.Qg6+–) 31...Rc6+= 32.dc6 Qc7 33.Bb2 (33.h4 Rg8 (33...gh4?? 34.Bf4 Qa7 35.c7 Qc5 36.Kh1+–) 34.Kh1 Kf8+– (34...gh4 35.Bf4 Rg4 36.Bc7 Re4 37.Re4+–)) 33...Rh6= 34.Bc3 Rc6 35.Ba5 (35.Qh7 Qf4 36.Qg8 (36.Ba5? Kf8 37.Bb6 Bf6-+; 36.Qh5? Qc4 37.Qe2 Qe2 38.Re2 Rc5-+) 36...Kd7 37.Rd1 Bd6 38.Bd4=) 35...Qd7–/+ 36.Qh7 Re6 (better is 36...Qd5!? 37.Kh1 Kf8 38.Qh5 Bc5–/+) 37.Qg8= Bf8 38.Rb1 Qd4 39.Kh1 Qf4 40.c6 Rc6?? (better is 40...Re3 41.Bb4 Rh3 42.gh3 Qe4 43.Kh2 Qc2 44.Kg3 h4 45.Kf3 Ne5 46.Ke3 Qd3 47.Kf2 Qc2 48.Ke3 Qd3 49.Kf2 Qc2 50.Ke3=) 41.Re1+– Ne5 42.Bd2 Qf5 43.Bg5?? (better is 43.Bb4 Kd7 44.Bf8+– (44.Qf8?! Qf8 45.Bf8 Ng6+/-)) 43...Rg6?? (better is 43...Kd7–/+) 44.Re5!+– Qe5 45.Qg6 Kd7 46.Qf7 Kc6 47.Bf4 Qa1?? 48.Kh2 Bc5 49.Qe8 Kd5+– 50.Qh5 Kc4 51.Qe2 Kd5 52.Qd3 Kc6 53.Qe4 Kb6 54.Be3 Be3 55.Qe3 Ka5 56.Qc5 Ka4 57.Qa7 1–0. Levin,Anatoly (2025) – Chu,Richard C, US Amateur Team East, 2013.

4.Nf3 c6

5.a3 Bg4 6.Be2 Be7 7.0-0 0-0 8.c4 a5 9.b5 Qc7 10.Nc3 Nbd7 11.Rc1 Nc5 (11...Nb6 12.bc6 bc6 13.c5 Bf3 14.cb6 Qb6 15.Bf3 Qb2 16.Bc6=) 12.d4+= ed4 13.Qd4 (13.ed4 Nce4+=) 13...Ne6 (better 13...Nb3 14.Qf4 Nc1 15.Rc1 Rfe8-/+) 14.Qd1= Rad8 15.Nd4 Be2 16.Nce2 Nd4 (16...Ne4 17.Qc2 N4c5 18.Nf5+=) 17.Nd4+= (worse 17.ed4 d5=) 17...d5 (17...Nd7 18.Nf5 Bf6 19.Bf6 Nf6 20.Qf3+/-) 18.Nf5 (18.bc6 bc6 19.cd5 Rd5 20.Rc6 Qb7+/-) 18...dc4 19.Qf3 cb5 20.Qg3 Qg3 21.Ne7 (21.Ng3? Rd3 22.Bf6 Bf6-+) 21...Kh8 22.hg3 Rd2 (22...Ne4 23.Bd4+/-) 23.Bc3 Rd7 (23...Rd3!?+/-) 24.Nf5+- Rd3 25.Ba5 Ra3? (better 25...Rd5 26.Nd4 Ra8+-) 26.Bb4 Raa8 (26...Rfa8 27.Ba3 Ra3 28.Nd6+-) 27.Bf8 Rf8 28.Nd6 Rd8 (28...g6+-) 29.Nf7 (29.Nf7 Kg8 30.Nd8+-) 1-0. PEREIRA – Bleikut, internet, 2021.

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

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

5.Be2 e4 6.Ng5 (6.Nd4!?=) 6...d5 7.0-0 (better is 7.a3!?–/+) 7...h6-+ 8.Nh3 Bh3 9.gh3 Bb4 10.Kh1 (10.f3 Rg8-+) 10...Nbd7 11.Rg1 0-0 12.Bg4 (12.Qf1 Kh8-+) 12...Nb6 13.Bf5 g6 14.Bg6? (better is 14.d3 Kh7 15.de4 gf5 16.Qf3–/+) 14...fg6 15.Rg6 Kh7 16.Qg1 (16.Rg3 Nc4 17.Bc3 Bd6-+) 16...Qe7 17.Be5 (17.d3-+) 17...Qe5 18.Rg7 Kh8 19.Qg6 Do you see the mate threat? 19...Qg5 20.Qg5 hg5 21.Rg5 Nfd7 (21...Nc4 22.d4 Rf7 23.a4-+) 22.Nc3 (22.Rg2 Ne5-+) 22...Rf2 23.Rag1 The mate threat is Rh5 23...Nf6 24.Rg6 (24.Nb1 Bd2 25.Nd2 Rd2-+) 24...Bc3 25.dc3 Nc4 (25...Nc4 26.Rb1 Rg8-+) 0–1. Trkn – Didier, itsyourturn.com, 2000.

5.Be2 h6 6.c4 Be6 7.a3 Be7 8.Nc3 0-0 9.0-0 Qc7 10.d4 ed4 11.Nd4 Bd7 12.Rc1 c5 13.bc5 dc5 14.Ndb5 Qc8 15.Nd6 Bd6 16.Qd6+/- Rd8? 17.Nd5 Nd5 18.Qd5 Be6 19.Qe5 Nc6?? 20.Qg7 1–0. slavisa10 – MarcusBiMan, Live Game Caissa's Web, 2004.

4.Nf3 Nc6

5.a3 b6 6.Be2 Bb7 7.0-0 a6 8.c4 Qe7 (8...e4 9.Ne1+=) 9.d4+/- 0-0-0 (9...e4 10.Nfd2+/-) 10.d5 Na7 11.Nbd2 c6 12.e4 c5 (12...Re8 13.a4+/-) 13.Qc2 (13.bc5 bc5 14.Rb1 Qc7+–) 13...h6 (13...Qc7 14.Rab1+/-) 14.Nh4 (14.Rfb1 Qc7+–) 14...g5 (14...Qc7 15.Rab1+–) 15.Nf5 Qc7 16.Rfc1 Be7 17.Qd1 Kb8 18.Bg4 (18.Qb3 Bf8+–) 18...Bc8 19.Bh5 (19.Bh3 Rde8+–) 19...Bf5 20.ef5 Nh5 21.Qh5 f6 22.Ne4 Rdf8 23.Qg6 Qc8 24.Ng3 (24.Rab1 cb4 25.ab4 Rfg8+–) 24...Rhg8 (24...Qe8 25.Rab1 Nc8 26.Bc3+=) 25.Qh5 g4 26.Qh6 Rh8 (26...Rg5!? 27.bc5 dc5 28.Be5 fe5 29.Qb6 Ka8+–) 27.Qg7 Qe8 28.bc5?? (better is 28.Qg4 Rfg8 29.Qe2+–) 28...Rfg8–/+ 29.Qg8 (29.Qh8 Rh8 30.cb6 Nc8–/+) 29...Qg8-+ 30.cb6 Nc8 31.b7 (31.Rab1 Qh7-+ (31...Nb6 32.Be5 fe5 33.Rb6 Ka7 34.Rcb1=)) 31...Nb6 (31...Kb7 32.Rab1 Ka7 33.Nf1-+) 32.Rc3 (32.Rab1 Kb7 33.Nf1 Ka7-+) 32...Kb7 33.Rb3 Rh7?? (33...Ka7 34.Rc1-+) 34.Ne4?? (34.Rb1 Bd8 35.Bc1 Ka8=) 34...Qh8?? (better is 34...Ka7 35.Ng3-+) 35.h3?? (35.Rb1 Bd8 36.Nd6 Ka8 37.Be5 fe5 38.Rb6 Bb6 39.Rb6-+) 35...gh3-+ 36.g3 (36.g4 Ka7 37.Rc1 h2 38.Kh1 Qc8-+) 36...h2 37.Kh1 Rh3 (better is 37...Qc8!? 38.Nd2 Qf5 39.Bc3-+) 38.a4 (38.Rb1 Ka7 39.Be5 de5 40.Rb6–/+) 38...Qh5 (better is 38...Kc7!? 39.Bc3 Nd7 40.Ba5 Kc8 41.Bb4-+) 39.a5 Qf3?? (better is 39...Qe2 40.f3 Qc2 41.Rb6 Kc8 42.Be5 Qe2-+ (worse is 42...fe5 43.Rab1 Bd8 44.Rb8 Kd7 45.c5+=; worse is 42...de5 43.Rab1 Kd7 44.Rb8+–)) 40.Rf3+– Nc4 (40...Nc8 41.Kg2 Rh7 42.Rh1+–) 41.Rb3 Ka7 42.Bc1 Rh5 (42...Rh8 43.Ra4 Rc8 44.Rc3+–) 43.Be3 (better is 43.Ra4 Na3 44.Ba3 Rh8+–) 43...Ka8 (43...Ne3 44.fe3 Rh7 45.Rab1+–) 44.Rab1 (better is 44.Rc1 Rh8 45.Rc4 Rb8+–) 44...Rh8 45.Rb7 Ne3 46.Re7 (better is 46.fe3 Re8 47.R7b6 Ka7+–) 46...Nd5 47.Rd7 Nf4 (47...Rb8 48.Rb8 Kb8 49.Rd6 Ne7 50.Rf6 Kc7+–) 48.Rd6 Ne2 (48...Rh7 49.Rd8 Ka7 50.Nd6 Ne6 51.Rdb8 Rc7 52.Nc8 Rc8 53.R1b7) 49.Ra6 1–0. GuestHJQM – GuestBMQT, freechess.org, 2017.

5.a3 e4 6.b5 Nb8 7.Nd4=.

5.a3 Ne7 6.c4 (6.Bb5 c6 7.Be2 Ng6=) 6...Ng6 (6...a5 7.Qa4 Bd7 8.b5=) 7.h3 (7.Be2 e4 8.Nd4 d5=) 7...Be7 8.Be2 Be6 (8...e4 9.Nd4=) 9.0-0 0-0 (9...a5 10.b5=) 10.d3 (10.d4 a5=) 10...c6 (10...a5 11.b5=) 11.Nbd2 Qc7 (11...a5 12.Ng5=) 12.Rc1 (12.Ng5 Bf5=) 12...d5 (12...a5 13.b5=) 13.cd5 Bd5 14.e4 (14.Nc4 Nd7=) 14...Be6 15.Ng5 (15.Re1 Rfd8=) 15...Qd6 16.Ne6 (16.Ndf3 a5=) 16...Qe6 17.Nc4 (17.d4 ed4 18.Bd4 Rfd8=) 17...Rfd8 18.Qc2 Rac8 19.Ne3 (19.Rfe1 c5 20.b5 Ra8=) 19...Bd6 (19...c5 20.b5=) 20.Nf5 Ne7 (20...Nf4 21.Rfe1=) 21.Ne7 (better is 21.Nd6!? Qd6 22.f4+/-) 21...Be7 (21...Qe7 22.Rfd1 a5 23.ba5 Ba3 24.Ba3 Qa3=) 22.Bg4 (22.Qc4 Qc4 23.Rc4= (worse is 23.dc4 Rd2 24.Bg4 Ng4–/+)) 22...Ng4–/+ 23.hg4 Qg4 (23...c5 24.b5–/+) 24.Be5+= Bd6 (24...c5 A) worse is 25.bc5 Rc5 (25...Bc5?! 26.Qb2=) 26.Qb2 Rc1 (26...Rd3 27.Rc5 Bc5 28.Qc2 Qe4 29.Qc5+–) 27.Rc1 Rd3–/+; B) 25.Qb1+=) 25.f3 (25.f4 Be5 26.fe5 Qg3+=) 25...Qh5 (25...Qe6 26.Bd6 Rd6+=) 26.f4 (26.Bd6!? Rd6 27.Qf2=) 26...Be5–/+ 27.fe5 Qe5 28.Rf5 (better is 28.Rf3!?–/+) 28...Qd4-+ 29.Kh1 (29.Qf2 Qf2 30.Kf2 Rd3-+) 29...Qd3 30.Qf2 (30.Qd3 Rd3 31.Rb5 Rd7-+) 30...Rf8 (30...Qa3!? 31.Rf1 f6 32.Qc5-+) 31.Rf1 (31.Qa7 Qe4 32.Rff1 Rc7-+) 31...Rc7 (31...Qa3?! 32.Rf7 Qb4 33.Rg7 Kh8 34.Rh7 Kh7 35.Qh4 Kg7 36.Qg5 Kh8 37.Qh5 Kg8 38.Qg6 Kh8 39.Qh5 Kg7 40.Qg5 Kh7 41.Qh4 Kg6 42.Qg4 Kh6 43.Qh4 Kg7 44.Qg5=) 32.e5 (32.Qa7 Qe4 33.Qf2 Re7-+) 32...Qa3 33.Rg5 Qb4?? (better is 33...h6 34.Rg4 Qd3-+) 34.e6?? (better is 34.Rg7! Kg7 35.Qf6 Kg8 36.Qg5 Kh8 37.Qf6 Kg8 38.Qg5 Kh8 39.Qf6 Kg8=) 34...f6 (better is 34...fe6 35.Qf8 Qf8 36.Rf8 Kf8-+) 35.Qf6 (35.Rh5-+) 35...Rf6 36.Rf6 Re7 (36...Qh4 37.Kg1 Qg5 38.Rf3-+) 37.Rf7 Rf7 (better is 37...Qh4 38.Kg1 Qg5 39.Re7 Qe7 40.Kf2-+) 38.ef7 Kf7 (38...Kf7 39.Rf5 Ke6-+) 0–1. GuestWRQY – GuestSZVS, freechess.org, 2017.

5.d4 e4 6.b5 Nb4 7.Nfd2=+.

5.d4 Bg4 6.de5 (6.b5 Nb4 7.a3 e4 8.ab4 ef3 9.gf3 Be6+=) 6...Bf3 (6...de5!? 7.Qd8 Rd8=) 7.Qf3+= Ne5 (better 7...de5!? 8.a3 e4+=) 8.Qb7+/- Be7 9.Bb5 Nfd7 (9...Kf8 10.Qa6+/-) 10.Bd7 Nd7 11.Qe4 (11.Bg7!? Rg8 12.Bc3+-) 11...0-0+/- 12.Qd3 (12.0-0 Bf6 13.Nc3 Re8+/-) 12...Bf6 13.Qd2?? (13.Bf6 Qf6 14.Qc3 Rfb8 15.Qf6 Nf6+= (worse 15...gf6 16.a3+-)) 13...Ne5 (better 13...Bb2 14.Nc3 Ba1-+) 14.Qc3?? (better 14.Bc3+=) 14...Nc4!!-+ 15.Qb3 (15.Qc4 Bb2 Discovered attack (15...Bb2 Pinning; 15...Bb2 Deflection; 15...Bb2 Clearance)) 15...Nb2 (better 15...Bb2 16.Qc4 Ba1 17.Nc3-+) 16.Nd2 (16.Nc3 Na4! 17.Na4 Ba1-+) 16...Nd3! 17.Qd3 (17.Qd3 Ba1 Discovered attack; 17.cd3 Ba1 Discovered attack) 17...Ba1 18.Ne4 (18.0-0 Be5-+) 18...Qe7 19.Ng3 (19.0-0 Be5-+) 19...Qe5 (better 19...Qe6 20.a3-+) 20.Qe2 (20.0-0-+) 20...Bc3 21.Kf1 Bb2 (21...Bb4 22.Qc4 Bc5 23.Ke2-+) 22.f3 (22.Qc4 Rfb8-+) 22...Qc3 (22...Rfb8 23.f4 Qe6 24.b5 Qa2 25.Kf2-+) 23.Kf2 (23.b5-+) 23...Bc1! 24.Rd1?? (24.Rc1 Qb2 Double attack (24...Qb2 Decoy)) 24...Bd2 25.Rd2 (25.Rd2 Qb4 Decoy; 25.Qd2 Qa3 Combination) 25...Qb2 (25...Qb4 26.Qd3-+) 26.Rd3? (better 26.Qc4!?=+) 26...Qb4 27.Rc3?? (better 27.Qe1 Qh4 28.Qc3-+) 27...Qc3 28.Ne4 (28.Nf5 Rab8 29.Qd3 Qd3 30.cd3 Rb2 31.Kg3 Ra2 32.Ne7 Kh8-+) 28…Qe5 0-1. Swapnil_Official – chessovolution, Rated UltraBullet game, lichess.org, 2021.

5.Be2 Bg4 6.a3 e4 7.Nd4 Be2 8.Qe2 Ne5 (8...Nd4 9.Bd4 a6 10.Nc3+=) 9.f4 (9.Qb5 c6 10.Qb7 Qc8 11.Qc8 Rc8+/-) 9...ef3 (9...Ned7 10.Qb5 Qc8 11.Nc3=) 10.Nf3 Nf3 (10...Ned7 11.0-0+=) 11.gf3 (11.Qf3 c6+/-) 11...Be7 (11...c6 12.e4=) 12.Nc3 (12.Qb5 Qd7 13.Qb7 0-0+=) 12...Qd7 13.h4 (13.Ne4 Ne4 14.fe4 Rg8=) 13...0-0-0 14.0-0-0 d5 15.Rhg1 g6 16.Nb5 a6 17.Nd4 Rhe8 18.Nb3 Kb8 19.Nc5 Bc5 20.bc5 Qe6 (20...Qc6 21.Qh2-/+) 21.Qd3=+ Nd7 22.Bd4 Ne5 23.Qb3? (better 23.Be5 Qe5 24.Qd4=+) 23...Nf3-+ 24.Rgf1 Nd4 (24...Nh4?! 25.Rf6 Qc8 26.Ra6=+) 25.ed4 f5 26.Rfe1 (26.h5 Qf6 27.c3 g5-+) 26...Qf7 (26...Qe1 27.Re1 Re1 28.Kb2-+) 27.a4 (27.Re5 Re5 28.de5 Qe7-+) 27...c6 (27...Re1 28.Re1 Qf6 29.Qb4-+) 28.Qb6 (28.Qg3 f4 29.Qg5 Qc7-+) 28...Qc7 (28...Qf6 29.Re3-+) 29.a5 (29.Re5 Re5 30.Qc7 Kc7 31.de5 d4-+) 29...Qb6 30.ab6 Kc8 (30...Re4 31.h5-+) 31.d3 Kd7 32.Rg1 Re2 33.h5 Rg8 34.Rg5 (34.c4 Ra2-+) 34...Ree8 (34...Ke6!? 35.Rf1 Kf7 36.hg6 hg6 37.Rh1-+) 35.Rdg1 (35.hg6 hg6 (35...Rg6?! 36.Rf5 Rg7 37.c4=) 36.Rdg1 f4-/+) 35...Ke7 36.hg6 hg6 (36...Kf6!? 37.g7 Re7-+) 37.Rg6-/+ Rg6 38.Rg6 Rf8 (38...Kf7 39.Rh6-/+) 39.Rh6 (39.c4 Rf7=) 39...f4=+ 40.Rh2 (40.Kd2 Rf6 41.Rh8 Rf7=) 40...f3-/+ 41.Rf2 Ke6 (41...Rf5 42.Kd2-/+) 42.Kd2 Rf4 (better 42...Rf6!?=+) 43.Ke3+= Kf5 44.Rf3 Rf3 45.Kf3 Kf6 (45...Ke6 46.c4 Kd7 47.Ke3+=) 46.Ke3 (46.c4 Ke6+=) 46...Ke6 47.c4 Kf6?? (47...Kd7 48.Kf3+=) 48.Kd2 (better 48.cd5 cd5 49.c6 bc6 50.b7+-) 48...Kf5?? (better 48...Ke6=) 49.Kc3 (49.Kc3 Ke6 50.Kc2+=) 1-0. sezwho (2170) - KieranBalibrera (2015), Rated Bullet game, lichess.org. 2014.

5.a3 a6

6.c4 b5 7.cb5+/- ab5 8.Bb5 Bb7 (8...Bd7 9.Qc2 Ne7 10.Bd7 Qd7 11.0-0+/-) 9.Nc3 (better is 9.Qc2!? Qd7 10.0-0+–) 9...Be7+/- 10.0-0 0-0 11.d4 e4 12.Nd2 h6? (12...d5 13.f3+/-) 13.Nce4 (better is 13.d5!? Ne5 14.Nde4 c6 15.dc6 Nc6+–) 13...Ne4 14.Ne4 Na7? (better is 14...Nb4 15.ab4 Be4+–) 15.Bd3 Bh4 16.g3 Be7 17.Qc2 Bf6 18.f3 Re8 19.Rae1 g6?! (19...Be7+–) 20.Nf6 Qf6 21.e4 Kg7 (21...Qe7 22.d5 c6 23.Bc4+–) 22.e5 (better is 22.d5 Re5 23.Qc7 Qd8 24.Qb7 Kf8 25.Be5 de5+–) 22...Qe6 (22...Qd8 23.e6! fe6 24.d5 e5 25.f4+–) 23.ed6 (better is 23.d5 Qc8 24.ed6 f6 25.Re8 Qe8 26.Qc7 Qf7 27.Bf6 Kg8 28.Bg6 Qc7 29.dc7+–) 23...Qd6 24.d5 Kf8 (24...Kh7 25.Re8 Re8 26.Rc1 Qb6 27.Qf2+–) 25.Re8 (25.Qc3 f6 26.Re8 Re8 27.Bg6 Re2+–) 25...Re8 (25...Ke8 26.Re1 Kd8 27.Qe2+–) 26.Qc3 (better is 26.Bd4 Kg8 27.Ba7 Bd5 28.Bc5+–) 26...Re5 (26...Ke7 27.Qg7 Kd7+–) 27.Qe5 Qe5 28.Be5 Bd5 29.Bc7 Nc6 30.Bd6 Kg7 31.Re1 Nd4 (31...Bf3 32.b5 Na5 33.Bb4+–) 32.Kf2 (better is 32.Be5 Kf8 33.Bd4 Bf3+–) 32...Nf3 33.Re3 Nd4 (33...Nh2 34.Re7 Ng4 35.Ke2+–) 34.b5 (better is 34.Be5 Kf8 35.Bd4 h5+–) 34...Nf5 (34...Ne6 35.a4+–) 35.Bf5 gf5 36.b6 Kf6 37.a4 Bc6 38.a5 Kg6 39.a6 Kf6 40.b7 Kg6 41.b8Q 1–0. Fournier,Frederic – DIEGOCHESS, rated blitz game (3/0), 2002.

6.c4 e4 7.Nd4 Ne5 =.

6.d4 Be7 7.de5+/- de5 8.Qd8 Bd8 9.Ne5 Ne5 10.Be5 0-0 11.Nc3 c6 0–1. marcosr – lubomir (1755), net–chess.com, 2005.

6.Be2 Be6 7.c4 h6 (7...e4 8.Ng5=) 8.0-0 Be7 9.d3 Nh7 (9...0-0 10.d4 ed4 11.Nd4 Nd4 12.Qd4+=) 10.Nbd2+= Bg5 (10...0-0 11.d4 ed4 12.Nd4 Nd4 13.Bd4+=) 11.Ne4 Be7 12.Nc3 (12.d4 ed4 13.Nd4 Nd4 14.Bd4 0-0+=) 12...f5 (12...0-0 13.d4 ed4 14.ed4+=) 13.Nd5 (13.d4 ed4 14.Nd4 Nd4 15.ed4 0-0+/-) 13...0-0+= 14.Ne7 Ne7 15.Qc2 Ng6 16.c5 (16.d4 e4 17.Nd2 Qg5+=) 16...Rf6 (16...Ng5 17.Nd2=) 17.cd6 (17.Rac1 b6+=) 17...cd6 18.Rac1 Rc8 19.Qa4 Rc1 20.Rc1 Bd7 21.Qb3 Be6 22.Qa4 Kh8 (22...Bd7 23.Qc2+=) 23.Bd1 (23.Qc2 Rf8+=) 23...Ne7 24.Bb3 (24.Nd2 Nd5+=) 24...Bd7 (better is 24...b5!? 25.Qa6 Bb3 26.Qb5 Bd5–/+) 25.Qa5= Nc6 (better is 25...Qa5!? 26.ba5 Bc6=) 26.Qd8+/- Nd8 27.Rc7 Bc6?? (27...Nf8+/-) 28.e4 (better is 28.Rc8 Bf3 29.Rd8 (29.gf3?! Rf8+/-) 29...Rf8 30.Rf8 Nf8 31.gf3+–) 28...fe4+= 29.de4 Be4 30.Nd2 (30.Rd7!? Nc6 31.Nd2+/-) 30...Bc6= 31.f3 (better is 31.Nc4 Ne6 32.Rc8 Nef8 33.f4+=) 31...Rf8 (31...Ng5 32.h4 Ngf7 33.Ne4 Be4 34.fe4=) 32.Ne4?? (better is 32.Nc4 Nf7 33.Na5+/-) 32...Be4+= 33.fe4 Nf6 34.Bd5 Ng4 (better is 34...Kh7!?+=) 35.Rd7+= (worse is 35.Bb7 Nb7 36.Rb7 Ne3-+) 35...Ne3 36.h3 Nd5 (36...Nc6 37.Rb7 Rf1 38.Kh2=) 37.ed5+= b5 (37...Kg8 38.Rd6 Nf7 39.Rd7+=) 38.Rd6+/- Nf7 39.Ra6 Rd8 40.d6 (40.Rc6!? Rd5 41.Rc5 Rd1 42.Kh2+/-) 40...Rd6= 41.Rd6 Nd6 42.Be5 Nc4 43.Bc3 Na3 44.Kf2 Kh7 (44...Nb1!? 45.Bb2 Nd2+=) 45.Ke3+/- Nc4 (45...Kg6 46.Kd4+/-) 46.Kd4 g5 47.Kc5 Ne3 48.g3 Nd1 (48...Nf1 49.Kb5 Ng3 50.Kc6+–) 49.Be5 (49.Bd4 Kg6+–) 49...Nf2 (49...Kg6 50.Bd4 h5 51.g4+–) 50.Kb5 Nh3 (50...h5+–) 51.Kc6 Nf2 52.b5 Nd3 53.Bd6 (53.Bd6 Nb2 54.b6+–) 1–0. GuestKJTG – GuestPQDQ, freechess.org, 2017.

6.Be2 Be7 7.0-0 0-0 8.c4 e4 9.Nd4 Ne5 10.Nc3 (10.d3 ed3 11.Bd3 c5=) 10...c6 (10...c5!? 11.Nb3 Be6+=) 11.d3= ed3 12.Bd3 Nd3 13.Qd3 Bg4 14.h3 Bh5 15.Ne4 Bg6 16.Nf6 Bf6 17.Qd2 c5 18.Nf3 Bb2 19.Qb2 b6 20.Rfd1 Qc7 21.Rd2 Rad8 22.Rad1 a5 23.Nh4 ab4 24.Ng6 (24.ab4 Be4 25.f3=) 24...ba3= 25.Qa3 hg6 26.Rd5 Rfe8 27.Qd3 Re6 28.e4 Qe7 29.f3 Qf6 30.Qb3 Rb8 31.Qb5 Qf4 32.Qc6 Exerts pressure on the backward pawn 32...Kh7 33.Qc7 (33.Rd6?? Rd8 34.Rd8 Rc6-+) 33...Ra8 34.Qb6 (worse is 34.Rd6 Ra2 35.Rd7 Re4 36.Qf4 Rf4–/+) 34...Ra2 35.Qb1 (35.Rd6 Qg3 36.R1d2 Rd2 37.Rd2 Rb6 38.Rf2 Rb1 39.Rf1 Rb2 40.Rf2 Qf2 41.Kh2 Qg2) 35...Re2 36.Qc1?? (better is 36.Kh1+=) 36…Qg3 (36...Qg3 37.Qh6 gh6 38.Rg5 Rg2 39.Kf1 Qf2) 0–1. Fournier,Frederic – lipu, Active (5/0), 2004.

5.a3 Be7

6.b5 Nb8 7.Nc3=.

6.Be2 0-0 7.c4 Be6 8.Qc2 Re8 (8...a6 9.0-0=) 9.0-0 a6 10.d4 ed4 11.ed4 Bg4 (11...d5 12.Ne5=) 12.h3 Bh5 13.d5 Bf3 14.dc6 (14.Bf3!? Ne5 15.Nd2+=) 14...Be2 (14...Bc6 15.Bd3+=) 15.Qe2 (15.cb7!? Bf1 16.ba8R Qa8 17.Kf1=) 15...bc6+= 16.Qf3 d5 17.Nd2 Ne4 (better is 17...a5!? 18.ba5 Ra5+=) 18.Ne4+= de4 19.Qf4 (19.Qg4 Bf8=) 19...Bf6 (19...c5 20.Rfd1 Qb8 21.Qg4+=) 20.Bf6 (20.Rfd1!? Bb2 21.Rd8 Rad8 22.Rb1+=) 20...Qf6= (worse is 20...gf6 21.Rad1 Qe7 22.Qg4 Kf8 23.Rfe1+/-) 21.Qf6 gf6 22.Rad1 Rad8 23.Ra1 (23.Rfe1 f5=) 23...f5 24.Rfe1 Kf8 25.g4 (25.Rad1 Rd6+=) 25...fg4 26.hg4 f6 (26...c5 27.b5+=) 27.Kg2 Kf7 28.Rh1 Kg6 29.Rh3 Rd4 (29...Rd3 30.Rah1+=) 30.c5 (30.Rah1 Rh8=) 30...Rd3 Black prepares e3 31.Rh5 (better is 31.Rah1!?+=) 31...e3–/+ 32.f4 Rd2 33.Kf3 e2 34.Re1 h6 (34...Rd3!? 35.Kf2 Ra3 36.Re2 Re2 37.Ke2 Rg3 38.f5 Kg7–/+) 35.f5+= Kg7 36.Rh2 (better is 36.Rh3!?+=) 36...Rd3–/+ 37.Kf2 Ra3 38.Re2?? (better is 38.Rhh1 Rae3 39.Rhg1-+) 38...Re2 39.Ke2 Ra2 (39...Ra2 40.Ke3 Rh2-+) 0–1. GuestBTYG – camelpig, freechess.org, 2017.

5.a3 Bg4

6.Be2 Be7 7.0-0 0-0=.

6.Be2 Be7 7.c4 0-0 (7...e4 8.Nd4 Be2 9.Qe2+=) 8.d3= a6 9.Nbd2 (9.0-0 Re8=) 9...b5 (9...Qd7 10.0-0=) 10.0-0 d5 (10...Rb8 11.Qc2 bc4 12.Nc4+=) 11.cd5 (11.Ne5 Ne5 12.Be5 Be2 13.Qe2 Re8+/-) 11...Nd5? (11...Qd5!? 12.Rc1 Rfe8+=) 12.Ne5 (12.Rc1 Qe8+/-) 12...Be2 13.Qe2 Ne5 14.Be5 Bd6 (14...a5 15.Qg4 f6 16.Bd4+=) 15.Bb2 (15.Bd4 a5+/-) 15...Qh4 (15...a5 16.Qg4 Nf6 17.Qg5+/-) 16.Nf3 (16.g3 Qh3+/-) 16...Qh5 (16...Qh6 17.Qc2+/-) 17.h3 (17.Qd2 Rfe8+/-) 17...g5 (17...a5!?+=) 18.Nd4 (18.Qc2 g4 19.hg4 Qg4+–) 18...Qh6 (better is 18...Qe2!? 19.Ne2 a5 20.ba5 Ra5+/-) 19.Nf5+– Qe6 (19...Qg6 20.Qf3 Ne7 21.Nd6 Qd6 22.Qf6 Qf6 23.Bf6+–) 20.Qg4 f6?? (20...h6+–) 21.Nh6 (21.Nh6 Kg7 22.Qe6 Kh6 23.Qd5+–) 1–0. GuestFRGY – GuestKMDG, freechess.org, 2016.

6.Be2 Be7 7.d3 0-0 8.Nbd2 Re8 9.c4 Bc8 10.0-0 a6 11.Re1 Nb8 12.a4 Nbd7 13.Qb3 Nb8 14.d4 ed4 15.Nd4+= Nc6 16.Nc6 bc6 17.Bf3 Bd7 18.a5 Rb8 19.Qc3 d5 20.c5 Be6 21.e4 de4 22.Ne4+/- Kh8 23.Rad1 Qc8 24.Rd2 Rg8 25.Red1?? Ne4 26.Be4+/- Bf6 27.Qc2 Bb2 28.Qb2 Qe8 29.Qc2 Bd5? 30.Bd5 cd5+/- 31.Rd5 Qe6 32.R5d4 Rge8+/- 33.h3 (33.h3 Qf6 34.Qd2+/-) 1–0. uno (1775) – guest1136, ICC, 2003.

5.b5 Na5

6.c4 b6 7.d3 Bg4 (7...Be7 8.Be2=) 8.Be2 Be7 (8...a6 9.0-0=) 9.0-0 c6 (9...a6 10.Nfd2 Be2 11.Qe2 ab5 12.cb5=) 10.a4 (10.Nfd2 Be6 11.Nb3+=) 10...e4 (better is 10...a6!?=) 11.de4+/- Ne4 (11...Bf3 12.Bf3 Nc4 13.Qc2 Nb2 14.e5+/-) 12.Qd4 (12.Bg7 Rg8 13.Bd4 d5+/-) 12...Nf6 13.Nbd2 c5 (13...d5 14.cd5 Qd5 15.Qd5 cd5 16.Rfd1+/-) 14.Qc3 (14.Qd3 0-0+/-) 14...0-0 (14...a6 15.Bd3+/-) 15.h3 (15.Bd3 a6+/-) 15...Be6+= 16.Ng5 (16.Qc2 h6+=) 16...Bf5 (16...Ne8!? 17.Ne6 fe6+=) 17.Bf3+/- h6 (better is 17...Rc8!?+/-) 18.Ba8+– Qa8 19.Ngf3 (19.e4 Nh5 20.ef5 Bg5+–) 19...Nh5 (19...d5 20.cd5 Qd5 21.Rfe1+–) 20.g4 (20.Qa3 Bf6+–) 20...Bf6 21.Qa3 (21.Qc1 Bd3 22.gh5 Bf1 23.Kf1 Bb2 24.Qb2 Nc4+/-) 21...Be4 22.Ne4 Bb2 (22...Qe4 23.Nd2 (23.gh5 Nc4 24.Qb3 Nb2+=) 23...Qg6 24.Kh2 Bb2 25.Qb2+– (25.gh5 Qf6 26.Qa2 Ba1 27.Qa1 Qe5 28.Qe5 de5–/+)) 23.Qb2 Qe4 24.Nd2 (24.gh5?! Qf3 (24...Nc4? 25.Nd2+–) 25.Qc2 Qh3=) 24...Qe7? (24...Qg6+–) 25.gh5 Qg5 (25...Qh4 26.Kh2+–) 26.Kh1 (26.Kh2 Qh5 27.Rad1 Rd8+–) 26...Qh5 27.Rg1 (better is 27.Kh2+–) 27...Qh3 0–1. Goldmund,Heike – Belaz,Egidio, FICGS, 2016.

6.c4 b6 7.Be2 a6=.

6.c4 b6 7.Be2 Be7 8.d4 (8.Nc3 Be6 9.d4 ed4 10.Qd4 h6+=) 8...ed4 (8...e4 9.Nfd2+=) 9.Nd4+= Bb7 10.0-0 0-0 11.Nd2 (11.Nc3 Qd7+=) 11...d5 (11...c5 12.Nf5 g6 13.Ne7 Qe7 14.Qc2+/-) 12.cd5 Qd5 (12...Nd5 13.N2b3+/-) 13.Bf3+/- Qg5 14.Bc3 (14.Bb7 Nb7 15.h4 Qe5+/- (15...Qh4?? 16.Nf5 Qb4 17.Rb1+–)) 14...Bf3 (14...Nd5 15.Bd5 Bd5 16.e4+/-) 15.N2f3 (15.Qf3 Rae8+/-) 15...Qg6 (15...Qd5 16.Ba5 ba5 17.Nc6+/-) 16.Ba5 (16.Nh4 Qe4 17.Nhf5 Bc5+/-) 16...ba5 17.Nc6 Bd6 18.Qd6 cd6 19.Ne7 Kh8 20.Ng6 fg6 21.Nd4 1–0. DEFFM – GuestZPWB, freechess.org, 2018.

6.c4 e4 7.Nd4=.

6.c4 Be6 7.Qc2 (7.Qa4 b6=) 7...Be7 (7...c6 8.Qa4 Nd7 9.bc6+=) 8.Be2 (8.d4 ed4 9.Nd4 c6+=) 8...0-0 (8...c6 9.bc6 Nc6 10.Ng5=) 9.h3 (9.d4 e4 10.Ng5 d5=) 9...c6+= 10.a4 cb5 (10...Qc7 11.d4 cb5 12.de5 de5 13.Be5=) 11.ab5= b6 (11...Qc7 12.Ng5=) 12.0-0 (12.Ng5 Qc7+=) 12...Rc8 Can c4 get defended? (12...Qc8 13.Rc1+=) 13.d3 Nd7 (13...Qd7 14.Na3+=) 14.Nc3 (14.Nbd2 Qc7+=) 14...Nc5 (14...d5 15.cd5 Bd5 16.d4=) 15.e4 (15.Ra2 Bf6 16.Rd1 e4 17.Ne4 Ne4 18.de4 Bc4 19.Bc4 Nc4 20.Bf6 Qf6+=) 15...Qd7 (15...f5 16.Nd5+=) 16.Na4 (16.Nd5 f5+=) 16...Ncb3 (16...Ncb7 17.Ra2=) 17.Ra3+= Rc7? (better is 17...Qb5! 18.Nc3 Qb4=) 18.Rb3+– Nb3 19.Qb3 f5 20.Nc3 fe4 21.Ne4 Rcc8 (21...Qc8 22.Ra1+–) 22.Nfg5 (22.Ra1 Rc7+–) 22...Bg5 23.Ng5 Rf6? (23...Rce8+–) 24.Ne6 Qe6 (24...Re6 25.Bg4 Rce8 26.Re1+–) 25.Bg4 Qe8 (25...Rf5 26.Qa3 Rc7 27.Bf5 Qf5 28.Qd6+–) 26.Bc8 (26.c5 Kh8 27.Bc8 Qc8 28.cd6 Rd6 29.Be5 Re6+–) 26...Qc8 27.c5 Kh8 28.cd6 Rg6 (28...Rd6 29.Be5 Re6 30.Qd5+–) 29.Be5 (29.Qd5 Qf8 30.Rc1 h6 31.Be5 Rd6 32.Bd6 Qd8+–) 29...Qh3 (29...Qa8 30.f3 Rg5 31.d7 Re5 32.Qc4+–) 30.Bg3 (better is 30.Qd5 h6 31.Bg3+–) 30...Rh6 (30...Qd7 31.Qc3 Re6 32.Qc7 Rd6 33.Bd6 Qc7 34.Bc7+–) 31.f3 (31.gh3 Rf6 32.Re1 h5 33.Re8 Kh7 34.Qg8 Kh6 35.Re7 g6 36.Qg7 Kg5 37.Re5 Rf5 38.f4) 31...Qg3 (31...Qh1 32.Kf2 Qh5+–) 32.Rc1 (better is 32.Qc4 Qh2 33.Kf2 Qh4 34.Qh4 Rh4 35.Ke3+–) 32...Rg6?? (better is 32...Qh2 33.Kf2 Qh4 34.g3 Qd4 35.Kg2 Rd6+/-) 33.Qc2 (33.Rc8) 33...Rh6 (33...h5 34.d7 Qg5+–) 34.Qc8 1–0. GuestDZJW – GuestFQSK, freechess.org, 2017.

6.d4 ed4 7.Bd4 c5 8.bc6 bc6 9.Bd3 c5 10.Bc3 Be7 11.0-0 0-0 12.Bf6 Bf6 13.c3 Be6 14.Qc2 Nc4 15.Bh7+/- Kh8 16.Nbd2 Ne5?? 17.Ne5+/- Be5 18.Be4 Rb8 19.Rab1 Rb6 20.Nf3 Bf6 21.c4 d5 22.cd5 Bd5? 23.Bd5 Qd5+/- 24.Rfd1 Qb7 25.Rb6 ab6+/- 26.Rd3 Rd8 27.Rd8 Bd8 28.Ne5 Bf6 29.Ng4 Qc6 30.h3 c4 31.f4 b5+= 32.Nf2 b4= 33.Ne4 Bc3?? 34.Nc3+– bc3 35.Qc3 Qc5 36.a3 Qc6 37.Kf2 1–0. NightEagle (2680) – IceBox (2425), fics, 2001.

6.d4 e4 7.Nfd2 d5 8.Be2 c6 9.0-0 Be7 10.bc6 bc6 11.c4 dc4 12.Nc4 Nc4 13.Bc4 0-0 14.d5 cd5 15.Be2 h6 16.f3 ef3 17.Bf3 Qb6 18.Qb3 Qb3 19.ab3 Bc5 20.Kf2 Re8 21.Re1 Bg4 22.h3 Bf3–/+ 23.gf3 d4 24.ed4 Re1 25.Ke1 Bb4 26.Bc3 Bc3 27.Nc3+= Rb8 28.Rb1 Nh5 29.Nd5 Rd8 30.Ne7 (30.Ne7 Kf8 31.Nc6=). makaveli1982 – Dok_Oli, internet, 2007.

6.Be2 c6 7.c4 Bd7 8.Nc3 Be7 9.d4 e4 10.Nd2 a6 (better is 10...cb5!? 11.Nb5 0-0=) 11.ba6 b6 12.Nde4 Ne4 13.Ne4 d5 14.cd5 cd5 15.Nc3 Bc6 16.a4 Bb4 17.0-0 Nc4 18.Bc4 dc4 19.Qe2 Bd5? (19...Bc3 20.Bc3 Qd5+–) 20.e4 Bc3 (20...Be6 21.d5 Bc3 22.Bc3 Bc8+–) 21.ed5 (21.Bc3?! Be6+–) 21...Qe7 22.Qe7 (better is 22.Qc4 0-0 23.Bc3 Rfc8+–) 22...Ke7 23.Bc3 Rhd8 24.Bb4 Kf6 25.d6 Ra6 26.Rfe1 b5 (26...Ra7+–) 27.ab5 Ra1 28.Ra1 Ke6 29.b6 Rd7 (29...h6 30.d5 Kd5 31.b7+–) 30.Ra7 Rd6 (30...Rd8+–) 31.Bd6 Kd6 32.b7 (better is 32.Rf7 Ke6 33.b7 Kf7+–) 32...Kc7 33.Ra4 (33.Ra4 Kb7 34.Rc4+–) 1–0. Wilke,Hans Peter – Stelzer,Lothar, Berlin Zugzwang op, 1998.

5.b5 Nb4

6.a3 Nbd5 7.Bc4 Be6 8.Ng5 Be7 9.Ne6 (9.e4 Ne3 10.Be6 Nd1 11.Bf7 Kf8=) 9...fe6 10.0-0 (10.Qf3 c6 11.Nc3 0-0=) 10...Qd7 (10...0-0 11.f4 ef4=) 11.a4 (11.d4 ed4=) 11...Nb6 (11...0-0=) 12.Bb3 c6 13.a5 Nc8 (13...Nbd5 14.c4 Nb4 15.d4 ed4 16.Qd4=) 14.Nc3 (14.a6 Nb6+/-) 14...cb5 (14...0-0!?=) 15.Nb5+/- Qb5?? (better is 15...Kf7 16.Qe2 Rf8+/-) 16.f4 (16.Ba4 Qa4 17.Ra4 Rb8+–) 16...Qb3?? (better is 16...0-0-+) 17.cb3+– 0-0 18.fe5 Ne4 (18...de5 19.Be5 Nd6+–) 19.Rf8 Bf8 20.d3 (20.Qg4 Nc5 21.b4 h5+–) 20...Ng5 (20...Nc5 21.b4 Na6 22.Qg4+–) 21.Qg4 h6 22.h4 Nf7 23.Qe6 b6 (23...de5 24.Be5 Ncd6 25.Bd6 Bd6+–) 24.ab6 (24.Rf1 Kh7 25.Qf5 Kh8 26.Qf7 Ne7 27.ed6 Rb8 28.de7 Ra8 29.ef8Q Rf8 30.Qg7) 24...Nb6 25.ed6 (better is 25.Rf1 d5+–) 25...Rd8 (25...Nc8 26.d7 Ncd6 27.Ba3+–) 26.Ra7 Kh7 27.Rf7 (27.Qf5 Kh8 28.Rf7 Bd6 29.Rg7 Bh2 30.Kh2 Rd3 31.Qf8) 27...Rd7 (27...Rc8 28.Qf6 Rc1 29.Kf2 Rc2 30.Kf3 Rg2 31.Kg2 Nd7 32.Rg7 Bg7 33.Qg7) 28.Rd7 (28.Qf5 Kg8 29.Rf8) 28...Nd7 29.Qd7 1–0. Trkn – GanfSet, itsyourturn.com, 2000.

6.Bc4 Bf5 7.d3 a6 8.ba6 ba6 9.0-0 Ng4 (9...Rb8 10.Bc3=) 10.h4 (10.e4 Bc8+/-) 10...e4 (better is 10...Rb8=) 11.Bf7?? (better is 11.de4 Bd7 12.Nbd2+/-) 11...Kf7–/+ 12.de4 Be4?? (better is 12...Bd7-+) 13.Ng5+– Ke8 14.Qg4 (14.Ne4 Qh4 15.Re1 d5-+) 14...Bc2 15.Qb4 h6 (15...Bf5 16.Qc4 Qd7 17.e4+–) 16.Ne6 Rb8 (16...Qc8 17.Qc4 (worse is 17.Bg7 Rh7 18.Qg4 h5+–; worse is 17.Ng7 Bg7 18.Bg7 Rh7+–; worse is 17.Nf8 Rf8 18.Qc4 Bb1 19.Rab1 g5+–) 17...Rb8 18.Bg7 (worse is 18.Qc2 Qe6 19.h5 d5+–) 18...Bg7 19.Ng7 (19.Qc2?! Ba1 20.Qc7 Be5+=) 19...Kf8 20.Ne6 Ke7 21.Nc7+–) 17.Qc4 (17.Qc4 Qe7 18.Nc7 (worse is 18.Qc2 Qe6 19.h5 d5+–) 18...Kd8 19.Ne6 Ke8 20.Bd4+–; 17.Qc3 Qc8 18.Nc7 Kd7 19.Na6 Rb7+–) 1–0. Wall,Bill – Tarahumara, internet, 2005.

6.Be2 a6 7.0-0 c6 (7...Bf5 8.Ne1+=) 8.c4 Bf5 9.Nc3 Nd3 (9...ab5 10.cb5 Bc2=) 10.Bd3 (better is 10.Qc2 Nb2 11.Qf5 ab5 12.cb5+=) 10...Bd3–/+ 11.Re1 e4 12.Nd4 c5 13.Nb3 Bc4 14.a4 Bb3 (14...ab5 15.Nb5 Be7 16.Nc1-+) 15.Qb3–/+ Be7 (15...d5!?–/+) 16.Nd5 0-0 17.Nf6 gf6 (better is 17...Bf6!? 18.Bf6 Qf6–/+ (18...gf6?! 19.Qd5=)) 18.ba6 ba6 (18...Ra6!? 19.Qd5 f5+=) 19.Qd5+/- f5 20.Qf5 Rb8 21.Qg4 (better is 21.Rab1!? Qc8 22.Qe4+/-) 21...Bg5+= 22.Bc3 f5 23.Qg3 h6? (better is 23...Kf7+=) 24.h4+– Kh7 (better is 24...f4 25.ef4 Rf4 26.hg5 Qg5 27.Qg5 hg5+–) 25.hg5 hg5 26.Qh3 Kg6 27.d4 g4 28.Qg3 cd4 29.Bd4 d5 (29...Kf7+–) 30.Rec1 Rc8 31.Rc8 Qc8 32.Qd6 Kh5 (32...Kf7 33.Qd5 Qe6 34.Qb7 Qe7 35.Qa6+–) 33.Qd5 (better is 33.Bg7 Rh8 34.Bh8+–) 33...Kg5 (33...Rg8 34.Rd1+–) 34.Qd6 Rf7 35.Qf4 (35.Rb1!? Qc7 36.Qa6 Qc2+–) 35...Kg6 36.Rb1 Rb7 37.Qd6 Kg5 (37...Kh5 38.Rb7 Qb7 39.Qe6+–) 38.Bf6 Kg6 39.Bh4 Kh5 (39...Kh7 40.Rb7 Qb7+–) 40.Rb7 Qb7 41.Qf6 Qb1 42.Kh2 Qf1 (42...Qb8 43.Bg3 Qb3 44.Bf4 g3 45.Kh3 gf2 46.Qf5) 43.Qg5 1–0. Neumann,Frank (1650) – Korn,Lothar (1700), remoteschach.de, 2008.

5.b5 Nb8

6.a4 c5 7.d3=.

6.a4 Bg4 7.Be2 e4 8.Nd4 Be2 9.Qe2 c5 (9...d5 10.0-0=) 10.Nf5 (10.bc6 bc6 11.f3 d5=) 10...d5 11.d3 Be7? (better is 11...Qd7 12.de4 de4+=) 12.Ng7+/- Kf8 13.Nh5 (better is 13.Nf5+/-) 13...Nh5? (better is 13...Rg8 14.0-0 Qd6+/-) 14.Bh8+– Ng7 (14...Nf6 15.de4 de4 16.0-0+–) 15.Bg7 Kg7 16.Qg4 (16.de4 Bf6 17.Qg4 Kh8+–) 16...Kh8 17.0-0 1–0. GuestJGRC – avmax, freechess.org, 2016.

6.c4 c6 7.Nc3 (7.Be2 e4 8.Nd4 d5 9.0-0 dc4 10.Bc4=) 7...Bg4 (7...e4 8.Nd4 a6 9.Qc2 Qe7 10.d3+=) 8.Be2 Be7 9.Qc2 (9.0-0 0-0 10.d4=) 9...0-0 (9...cb5 10.cb5=) 10.Ne4 (10.0-0 cb5 11.cb5 Nbd7=) 10...h6 (10...Ne4!? 11.Qe4 f5+=) 11.Nf6= Bf6 12.Qe4 (12.Ng5 Bg5 13.Bg4 cb5 14.cb5 a6+=) 12...Bf3 (12...Qc8 13.Nd4 Bd7 14.Bd3–/+) 13.gf3 (13.Bf3!? Bg5 14.bc6 bc6 15.Qd3+=) 13...Re8 14.Bd3 g6 15.Rg1 Re7 16.Qg4 h5 (better is 16...cb5!? 17.cb5 Rc7=) 17.Qh5+/- Rc7 18.Ke2?? (18.bc6!? Nc6 19.Be4+/-) 18...Kf8 (18...e4 19.Rg6 fg6 20.Qg6 Rg7 21.Qf6 ed3 22.Kd3 Qf6 23.Bf6–/+) 19.Qg4 (19.Qh6 Bg7 20.Qh3 Ke8+=) 19...a6?? (19...e4 20.Be4 Bb2 21.Rab1–/+) 20.Rac1?? (better is 20.bc6 Nc6 21.Rab1+/-) 20...ab5 21.a3?? (21.Bb1 bc4 22.Qc4 Ke8+=) 21...bc4?? (better is 21...e4 22.Bf6 A) 22...Qf6?! A1) worse is 23.Qe4 d5 (23...Ra3 24.cb5 d5 25.Qb4 Qe7 26.Qd4+–) 24.Qg4 bc4–/+; A2) worse is 23.fe4 bc4 (worse is 23...Ra3 24.cb5 Ke8 25.Bc4+/-) 24.Bc4 Ra3=; A3) 23.Be4 bc4 24.f4=; B) 22...ed3 23.Kd3 Qf6 24.cb5 Ra3 25.Ke2 Ke8-+) 22.Bc4–/+ d5 23.Bb3 Nd7 24.a4 b6 25.d4 ed4 26.Bd4 Bd4 27.Qd4 Qf6 (27...Nc5!? 28.Bc2 Ke7+=) 28.Bd5= Qd4 29.ed4 Ra4 30.Rc6 Rc6 31.Bc6 Rd4 32.Ke3 Rd6 33.Be4 (33.Bd7 Rd7 34.f4 Rd5+=) 33...Nc5–/+ 34.Rb1 Ke7 35.Rb5 Kd8 36.h4 Kc7 37.Rb1 Kb8 (37...f5 38.Bc2–/+) 38.Ra1 Ne4 (better is 38...f5!? 39.Ra8 Kc7 40.Ra7 Kd8–/+) 39.fe4= Kc7? (39...Rc6 40.Rd1=) 40.Kf4 (better is 40.Ra7 Kc6 41.Rf7+–) 40...Rf6 41.Ke3 b5 42.e5 Rf5 43.f4 Kc6 44.Ra6 Kd5 45.Rd6 Kc4 46.e6 fe6 47.Re6 Rh5 48.Rg6 Rh4 49.Rg8 b4 50.Rc8 Kb3 51.f5 Rh6 52.Rf8 Kc2 53.f6 b3 54.f7 Rf6 55.Rc8 Kb1?? (better is 55...Kd1 56.Rd8 Kc1=) 56.f8Q+– Rf8 57.Rf8 b2?? (better is 57...Kc2=) 58.Kd2+– Ka2 59.Ra8 Kb1 60.Rb8 Ka2 61.Kc2 b1Q 62.Rb1 Ka3 63.Rb8 (63.Kc3 Ka4 64.Rb4 Ka5 65.Kc4 Ka6 66.Kc5 Ka5 67.Rd4 Ka6 68.Rd7 Ka5 69.Ra7) 63...Ka4 64.Kc3 Ka5 65.Kc4 Ka6 66.Kc5 Ka7 67.Rb2 (67.Rb6 Ka8 68.Kd6 Ka7 69.Kc7 Ka8 70.Ra6) 67...Ka6 68.Rb1 1–0. Pies,G – Kronauer,T, freechess.de (year?).

6.c4 Nbd7 7.Be2 Nc5 8.0-0 Be7 9.Nc3 0-0 10.Na4 (10.d4 ed4 11.ed4 Nce4+=) 10...Nfd7 (10...e4 11.Nd4=) 11.Nc5+= Nc5 12.d4 Nd7 (better is 12...ed4!? 13.ed4 Bf6+=) 13.de5+/- de5 14.Ne5 (14.Be5?! Ne5 15.Ne5 Qd6+=) 14...Ne5 15.Be5 f6 16.Bc3 (16.Qd8 Bd8 17.Bg3 Be6+–) 16...Qd1+/- 17.Rad1 (17.Rfd1 Be6+/-) 17...Be6 18.Bb2 (18.Rd4 a6+/-) 18...Bc5 (18...a6!? 19.Ra1 ab5 20.cb5 Ra2 (20...Ba2?? 21.Ra2 Ra2 22.Bc4 Kh8 23.Ba2+–) 21.Ra2 Ba2+=) 19.Bd4+/- b6 20.Bc5 bc5 21.f4 f5 22.Rc1 Rf6 (22...Rad8 23.Rfd1+/-) 23.Rfd1 (23.Rc3 Kf7+–) 23...Re8 (23...a6!?+/-) 24.Rc3 Rf7 (better is 24...a5+–) 25.Ra3 c6 26.bc6 Rc7 27.Rc3?? (better is 27.Rb1 Ree7 28.Bf3+–) 27...Rc6+/- 28.Rd2 Ra6 29.Rb2 Rd8 30.Kf2 g6 31.Rbc2 ½–½. Hasler,Ueli (1710) – Santos,Pedro (1835), CiF, 2006.

6.c4 Be7 7.Be2 0-0 8.0-0 Nbd7 9.h3 (9.d4 ed4 10.Bd4 Re8=) 9...Nb6 10.a4 Be6 11.Qc2 Qc8 12.Ng5 h6 (12...Bf5!? 13.e4 Bg6=) 13.Ne6+/- Qe6 14.d4 ed4 15.ed4 Qe4 (15...d5 16.c5 Nc8 17.Re1+/-) 16.Bd3 Qh4 17.Nd2 Nbd7 18.Nf3 Qh5 19.Rae1 Bd8 20.Nh2 Rb8 (20...a6 21.Be2 Qg6 22.Qg6 fg6 23.Bd3+/-) 21.Re3 a6 22.Rfe1 ab5 23.ab5 d5? (23...Ra8 24.Be2 Qg6 25.Qg6 fg6 26.Nf3+/-) 24.Bf5 (24.Ba3 dc4 25.Bc4 Ra8+–) 24...dc4 (better is 24...c6+/-) 25.Bd7?? (better is 25.Ba3+–) 25...Nd7+= 26.Qc4 Bf6 27.Ng4 Rbc8 28.Nf6 Nf6 29.d5 Qd5 30.Qe2 Qd6 (30...Ne8 31.Re5 Qb3 32.Ba1=) 31.Qc2 (better is 31.Ba3 c5 32.bc6 Qc6 33.Bf8 Rf8 34.Qb2+/-) 31...Rfe8 32.Re8 (32.Qf5 Rcd8 33.Bf6 Re3 34.Re3 Qf6 35.Qf6 gf6+=) 32...Ne8 33.Qf5 Rd8 34.Qe4 b6 35.Qg4 Qg6 0–1. GuestMXLJ – guestfighter, freechess.org, 2017.

5.b5 Ne7

6.c4 Bg4 7.Be2 a6 8.d4 ed4 (8...e4!? 9.Ng1 Be2 10.Ne2 ab5 11.cb5 Qd7+=) 9.Nd4+= Be2 10.Ne2 ab5 11.Bf6 gf6 12.cb5 Bg7 13.Nbc3 0-0 14.0-0 Ng6 (14...f5!?+=) 15.Qd5 Rb8 (15...Qc8 16.b6+/-) 16.a4 Ne5 17.Qe4 Qd7 18.a5 f5 19.Qf4 Nd3 20.Qg3 Kh8 21.Rfd1 Bc3 (better is 21...Nc5!? 22.Qh4 Ne4+/-) 22.Nc3+– Rg8 23.Qh4 (23.Rd3?! Rg3 24.hg3 Ra8=) 23...Ne5?? (23...Nc5 24.b6 Rg7 25.bc7 Qc7+–) 24.Qf6 Rg7 25.Qe5!! de5 26.Rd7 f6 27.Rg7 Kg7 28.Nd5 c6 29.bc6 bc6 30.Ne7 c5 (30...Kf7 31.Nc6 Ra8 32.a6+–) 31.Nf5 (better is 31.a6!? c4 32.a7 Ra8+–) 31...Kf7 32.a6 c4 (32...Ke6 33.e4 Ra8+–) 33.a7 Ra8 34.Nd6 Ke6 35.Nc4 (35.Nc4 e4 36.Ra6 Kf7 37.Nb6+–) 1–0. orane (1995) – M8IN3, Live Game Caissa's Web, 2004.

6.c4 Ng6 7.Qc2 Bg4 8.Be2 Be7 9.h3 Bf3 (9...Be6 10.d4=) 10.Bf3 Rb8 11.Nc3 (11.0-0 c6+=) 11...0-0 (11...Nh4 12.Rg1=) 12.Nd5 (12.0-0 a6+=) 12...Nd5 (12...c6 13.Ne7 Qe7 14.0-0=) 13.Bd5 Kh8 (13...c6 14.Be4=) 14.h4 (14.0-0 c6 15.Be4 cb5 16.cb5 Qd7+=) 14...Bh4 15.g3 Bg5? (15...c6 16.Be4 Bf6 17.Bg6 fg6 18.Qg6=) 16.0-0-0?? (better is 16.Bf7 Bh6 17.Bg6 hg6 18.Qg6+–) 16...f5 (16...Qe8!?+=) 17.g4= Bh6 (17...c6!? 18.Be6 cb5 19.gf5 Nh4 20.cb5 Bf6+=) 18.gf5+/- Ne7 (18...Nh4 19.Be4+/-) 19.Be6 c6 (19...Ng8!?+/-) 20.f4! Qc7? (20...ef4 21.Rh6 Decoy) 21.fe5 de5 22.Qe4 Ng8 23.Bg8 (better is 23.Be5 Nf6 24.Bc7 Ne4 25.Rh4+–) 23...Kg8 24.Rh6! (24.Be5 Rbe8 25.d4 cb5 26.Qd5 Qf7 27.Rh6 Qd5 28.cd5 Rc8 29.Kd2 gh6+/-; 24.Qe5?! Qe5 25.Be5 Rbe8+=) 24...cb5 (24...gh6 25.Rg1 Double attack) 25.Be5 Qc4 (25...Rbe8 26.Qd5 (26.Bc7?! Re4 27.d3 Re3+–) 26...Qf7 27.Rg1 Re5 28.Qe5 bc4 29.Re6+–) 26.Qc4 bc4 27.Rg1 (27.Rg1 Rf5 28.Bb8+–) 1–0. Moehring,Norbert (2165) – Reichwald,Klaus Dieter (2025), Bad Woerishofen op, 2003.

6.Be2 c6 7.0-0 h6 8.d4 Nfd5?? (better is 8...e4 9.Nfd2 d5=) 9.de5+– a5? (better is 9...de5 10.c4 Nb6 11.Qd8 Kd8 12.Ne5 Be6 13.Rd1 Ke8+–) 10.c4 Nb6 11.ed6 Ng6 12.c5 Nd7 13.Bd4 (better is 13.Qc2 Nc5 14.Qc5 Bd6 15.Qc2+–) 13...f6 (13...Nb8+–) 14.Qc2 Nde5 15.Be5 Ne5 (15...f5+–) 16.Ne5 fe5 17.Qg6 Kd7 18.Bg4 1–0. Hoch,Hubertus (2320) – Korn,Lothar (1700), RSL2, 2009.

6.Be2 Ng6 7.0-0 Be7 8.a4 0-0 9.c4 a6 10.Nc3 ab5 11.ab5 Bg4 (11...Ra1 12.Qa1 c5 13.Re1=) 12.Ra8+= Qa8 13.d4 ed4 (13...Qc8 14.Qc2+=) 14.Qd4 Nd7?? ( 14...Re8+=) 15.Qg4 Nde5 16.Qe4 Nf3 (16...Bf6 17.Nd4+–) 17.Bf3 (< 17.gf3 Bf6+–) 17...Bf6 18.Ra1 Qd8 (19.Qb7 Be5+–; 18...Qc8 19.Qb7 Ne5 20.Qc8 Nf3 21.gf3 Rc8 22.Ra7+–) +–. guest1408 – guest394, ICC, 2003.

6.Be2 Ng6 7.0-0 Be7 8.c4 0-0 9.d3 Bg4 10.Ne1 Qc8 11.Bg4 Ng4 12.h3 Nh6 13.Nd2 f5 14.f3 f4 15.ef4 Nf4 16.Kh2 Nf5-+ 17.Nc2 Nd3 18.Bc3 Bh4 19.Ne4 Nf4 20.Qd2 Qe6 21.Ne3 Ne3 22.Qe3 Ng6 23.Qd3–/+ Rad8 24.Rfd1 Be7 25.Bd2 Nf4 26.Qf1 Qg6 27.Bf4 Rf4 28.Rd2 Rdf8 29.Rf2 Bh4 30.g3?? Re4 31.gh4 Rh4 32.Rg2 Qf6 33.Rf2 e4 34.Re1 Qf4 35.Kh1 Qg3 36.Rh2 Rf3 37.Qg2 Qe1 (38.Qg1 Rf1 39.Rb2 Rg1 40.Kh2 Qg3) 0–1. valpa – Cloe, playchess.de, 2003.

4.Nf3 Bd7

5.a3 Be7 6.d4 ed4 7.Nd4 Nc6 8.Nf3 0-0 9.Bc4 a6 10.0-0 Na7 11.Nbd2 Bb5 12.Bb5 Nb5 13.c4 Na7 14.e4 b5 15.Qb3 bc4 16.Qc4 Nb5 17.a4 Na7 (17...d5 18.ed5 Nd6 19.Qc6+/-) 18.Rad1 (18.Qa6 c5 19.bc5 dc5+–) 18...Qe8? (18...Qd7 19.Rc1 Qa4 20.Qc7 Qb4 21.Rb1+=) 19.e5?? (better is 19.Qc7 Nc6 20.b5 ab5 21.ab5+–) 19...de5+= 20.Be5 (better is 20.Qc7 Bb4 21.Be5+=) 20...Nc6?? (20...Qa4!? 21.Rb1 Nb5+=) 21.Bc7 (better is 21.Bf6 Bf6 22.Rfe1+–) 21...Nb4 22.Rfe1 (22.Qb3=) 22...Ra7?? (better is 22...Rc8 23.Ne4 Nfd5-+) 23.Bd6+/- Nbd5? (better is 23...Qa4!? 24.Re7 Qd1 25.Re1 Qc2 26.Qb4 Rfa8+/-) 24.Ne4+– Qc8? (better is 24...Rd7 25.Nf6 Nf6 26.Qa6 Rd8+–) 25.Nf6 Bf6 26.Qd5 Rd7 27.Ne5 Be5 28.Qe5 h6 (28...Rfd8+–) 29.Bf8 Rd1 1–0. maxeem – mass, Live Game Caissa's Web, 2004.

5.a4 Nc6 6.b5= Ne7 (6...Na5 7.Be2=) 7.c4 (7.Be2 e4 8.Nd4 d5=) 7...Ng6 (7...e4 8.Bf6 gf6 9.Nd4=) 8.d3 h6 (8...a6 9.Be2=) 9.Be2 Be7 10.Nbd2 c6 (10...0-0 11.0-0=) 11.0-0 a6 (11...0-0 12.e4=) 12.bc6 Bc6 (12...bc6 13.Rb1=) 13.e4 (13.d4 Qc7+=) 13...Nd7 (13...0-0!?=) 14.d4+/- ed4 15.Nd4 Bf6 16.Nc6 (16.Rb1 Nc5 17.Nc6 bc6+=) 16...bc6= 17.Bf6 (17.Rb1 Bb2 18.Rb2 Nc5=) 17...Nf6 (17...Qf6 18.Rb1=) 18.Bf3 (18.Rc1 0-0=) 18...Ne5 (18...0-0 19.Rb1=) 19.h3 (19.Rb1 0-0=) 19...c5 (19...0-0 20.Rb1=) 20.Be2 Rb8 21.f4 Nc6 22.Bd3 (22.Rb1 Rb1 23.Qb1 Qa5=) 22...0-0 23.Re1 (23.Rb1 Rb1 24.Qb1 Qa5+=) 23...a5 (better is 23...Re8=) 24.e5? (better is 24.Rb1=) 24...de5-+ 25.fe5 (25.Nb3 ef4 26.Kh1 Nb4-+) 25...Qd4 (25...Ne5 26.Bf1-+) 26.Kh1 (26.Kh2 Ne5 27.Nf3 Qf4 28.Kh1 Nd3 29.Qd3 Rfd8–/+) 26...Ne5 (26...Qd3?! 27.ef6 Rfd8 28.Qg4+=) 27.Be2 Rb2 28.Nf3 Nf3 29.Bf3 Qc4 30.Rf1 (30.Qd6 Rc8-+) 30...Ne4 31.Be4 (31.Kg1 Qc3 32.Re1 Ng5-+) 31...Qe4 Threatening mate... how? 32.Rf3 c4 33.Qf1 Rb3 34.Rf4 (34.Rb3 cb3 35.Qb5 Qc2-+) 34...Rh3 35.Kg1 Qe3 36.Qf2 Qf2 37.Kf2 Rc3 38.Ra2 g6 39.Rb2 (39.Re4 Rc8-+) 39...Rd8 40.Rb7 (40.Re4 Rb3 41.Rc2 c3-+) 40...f5 (40...Rd2 41.Kg1 f5 42.Rc7-+) 41.Rc7 Rc2 (41...Rd2 42.Ke1 Rg2 43.Kf1-+) 42.Kg1 (42.Kg3 Rd3 43.Kh2 Rdd2-+) 42...c3 (42...Rdd2 43.Rfc4 Rg2 44.Kf1 Rc4 45.Rc4-+) 43.Rfc4 Rd3 (better is 43...Rd1 44.Kh2 Rdd2-+) 44.R4c6 (44.Rb7 Rcd2 45.Rc8 Rd8 46.Rcc7=) 44...Rdd2 (better is 44...Kf8 45.Rg6 Rd1 46.Kh2 Rdd2-+) 45.Ra6+= Do you see the mate threat? 45...Rd8 (45...Rc1!? 46.Kh2 Rcd1 47.Rg6 Kf8 48.Rh6 Rd7 49.Rc3 Kg7=) 46.Rg6= Kf8 47.Rh6 Kg8 ½–½. Mauron,Regis (1780) – Guissouma,Yalel, St Quentin op 5th, 2002.

5.a4 e4 6.Nd4 =+.

5.b5 c6 6.a4 (6.Nc3 Be7=) 6...cb5 (6...e4 7.Nd4=) 7.ab5= Qb6 (7...Be7 8.Nc3=) 8.c4 (8.Nc3 Be7=) 8...Bg4 (8...Be7 9.d4 e4 10.Nfd2+=) 9.Be2+= Be7 10.h3 Be6 11.Nc3 (11.d4 e4 12.Nfd2 d5+=) 11...Nbd7 (11...Qc7 12.d3+=) 12.d4+= 0-0 13.de5 (13.Bd3 ed4 14.ed4 d5+=) 13...de5= 14.Qc2 (14.0-0=) 14...Nc5 (14...Rfc8 15.Qb3+=) 15.Ng5 (15.Ne5 Qc7 16.Nf3 Rfd8+/-) 15...g6 (15...Rfe8 16.0-0=) 16.Ne6 (16.0-0 Bd7+=) 16...Qe6= 17.0-0 Rfd8 18.Rfd1 Bd6 (18...a6 19.Rd8 Rd8 20.ba6 ba6 21.Nd5+=) 19.Nd5+= Nce4 (19...a6 20.b6+=) 20.Nf6+/- Qf6?? (better is 20...Nf6 21.Bf3 Qe7+/-) 21.Qe4+– Qg5 (21...a5 22.Qb7 a4 23.Ba3 Ba3 24.Ra3+–) 22.Ba3 (better is 22.Qb7 Rab8 23.Qa7+–) 22...f5 (22...Ba3 23.Rd8 Qd8 24.Ra3 Qe7+–) 23.Qd5 Kg7 (23...Kf8 24.Bd6 Rd6 25.Qd6 Qe7 26.c5+–) 24.Bd6 (24.Bd6 Qf6 25.Qb7 Kg8 26.b6+–) 1–0. DEFFM – GuestTZVG, freechess.org, 2016.

5.b5 Be7 6.c4 0-0 7.Nc3 c6 (7...a6 8.d4 e4 9.Nd2 ab5 10.Nce4 bc4 11.Nf6 Bf6 12.Bc4=) 8.a4 (8.d4 e4 9.Nd2 Bf5=) 8...cb5 (8...Bg4 9.Be2+=) 9.ab5= a6 (9...Qc7 10.Qb3 Re8 11.b6=) 10.Be2 (10.d4 Qc7=) 10...Be6 (10...Qc7 11.d4=) 11.h3 (11.0-0 Qc7=) 11...Nbd7 12.d4 ed4 (12...Qc7 13.d5 Bf5 14.Nh4+=) 13.Nd4 Nc5 (13...Nb6 14.Ne6 fe6 15.Qd4=) 14.Ne6 (14.0-0=) 14...Ne6 (14...fe6!? 15.0-0 Qe8=) 15.0-0+/- ab5 (15...Re8 16.Bf3 Nc5 17.ba6 Ra6 18.Ra6 ba6 19.Bc6+=) 16.Ra8 Qa8 17.Nb5 Rd8 18.Qc2 (18.Qd2 Nc5+/-) 18...Nc5 (18...d5 19.Nd4 Qa5 20.Nf5+/-) 19.Ra1 Qb8 20.Bf3 (20.Bd4 Ne6+/-) 20...h6 (20...d5 21.cd5 Nd5 22.Qf5+/-) 21.Nd4 (21.Ra7 Qc8+–) 21...Qc7 22.Nf5 Rb8 (22...Rc8 23.Bd4+–) 23.Rd1 (23.Ra7 Qd7+/-) 23...b5 (23...Ra8 24.Bd4+/-) 24.Ne7 (24.cb5!? Rb5 25.Bf6 Bf6 26.Nd6+–) 24...Qe7+= 25.Bd5 (25.cb5 Rb5 26.Bd4 Nfe4+=) 25...bc4 (25...Nd5!? 26.cd5 Qe4 27.Qe4 Ne4=) 26.Bc4+= Rd8 (26...Qe4 27.Qe4 Nfe4 28.Ba1+=) 27.Qf5+/- Qd7 (27...Qe4 28.Qe4 Nce4 29.f3+/-) 28.Qf4 (28.Qd7 Rd7 29.Bf6 gf6+/-) 28...Qe7 (28...Nce4 29.f3 Rb8 30.Bf6 Nf6 31.Rd6+/-) 29.f3 (29.Bf6 Qf6 30.Qf6 gf6+/-) 29...Ne6 (29...Nh5 30.Qd4+=) 30.Bf6 (30.Be6 fe6 31.Bf6 gf6 32.Qh6 Qg7+/-) 30...Qf6 31.Rd6?? (better is 31.Qf6 gf6 32.g4+/-) 31...Qa1 (31...Nf4 32.Rf6 Nh3 33.Kh2 gf6 34.Kh3-+) 32.Kh2 (32.Bf1 Nf4 33.Rd8 Kh7 34.ef4 Qf6–/+) 32...Nf4 (32...Nf4 33.Rd8 Kh7 34.ef4 Qf6 35.Bd3 g6–/+) 0–1. DEFFM – dadaabi, freechess.org, 2016.

5.Be2 a5 6.b5 c6 7.c4 Be7 8.0-0 0-0 9.d3 (9.Nc3!?=) 9...cb5+= 10.cb5 Bb5 11.Nc3 Bd7 12.Rb1 Nc6 13.a3 Be6 14.d4 e4 15.Nd2 d5 16.Qb3 Qd6 17.Nb5 (17.Qb7?? Rfb8 18.Nb5 Rb7 19.Nd6 Bd6-+) 17...Qb8 18.a4 Nb4 19.Rfc1 Rc8 20.Rc8 Qc8 21.Rc1 Qb8 22.Nb1 Ng4 23.g3 Bd6 24.Nd6 Qd6 25.Nc3 Bd7 (25...Rc8 26.Rb1–/+) 26.Nb5 (26.Ba3 Rc8+=) 26...Bb5 27.ab5 Qg6 28.Ba3 Nd3 29.Bd3 ed3 (29...Qh5 30.h4 Qf5 31.Rc2 ed3 32.Rd2–/+) 30.Rd1 (30.Qd5!? d2 31.Rd1+=) 30...Qf5 31.Rd2 Qh5 32.h4 g5?? (better is 32...Nf6 33.Qd3 Ne4+=) 33.Qd5+– h6 34.Rd3 Rc8 (better is 34...Qg6 35.e4 Re8+/-) 35.Kg2?? (35.f3!? Rc2 36.Qb3 Re2+–) 35...Nf6?? (35...Rc2 36.Qd8 Kh7-+) 36.Qf5 Rc2?? (better is 36...Qg4 37.Qg4 Ng4+/-) 37.Be7 (better is 37.Qf6 gh4 38.e4 (38.Qh4?! Qf5 39.Qf4 Qd3 40.Qb8 Kh7 41.Qb7 Kg6=; worse is 38.gh4 Qg4 39.Kh2 Qe2+–) 38...Qb5 39.Rf3 h3 40.Kh2+–) 37...gh4?? (better is 37...Ng4 38.d5 Rf2 39.Qf2 Nf2 40.Kf2 Qg6-+) 38.Qh5+– (38.Qf6?! h3 39.Kh2 Qe2=) 38...Nh5 39.Bh4 Ng7 40.Ra3 b6 (better is 40...Nf5 41.Bd8 a4+–) 41.Bd8 Rb2 42.Bb6 Rb5 43.Ba5 Ne6 44.Bc3 Kg7 (44...f5+–) 45.d5 (45.d5 Kg6 46.de6 fe6 47.Ra6+–) 1–0. Fournier,Frederic – kaspy07, Active, 2006.

5.Be2 b6 6.0-0 a6 (6...e4 7.Nd4+=) 7.d4+/- e4 8.Nfd2 d5 9.a3 b5 10.f3 Bf5 (10...Bd6 11.Nc3 Qe7 12.fe4 de4 13.Qe1+/-) 11.fe4+– Be4 12.Ne4 Ne4 13.Nd2 Nd2 14.Qd2 Qg5 (14...Bd6 15.a4 ba4 16.c4+–) 15.Bd3 (15.a4!? ba4 16.Ra4 Bd6+–) 15...Bd6+/- 16.Rae1 (16.Qe2 Qh6 17.g3 0-0+–) 16...Qh6 (16...0-0!? 17.Qe2 Nd7+/-) 17.g3+– 0-0 (17...Nd7 18.Qg2 Nb6 19.e4+–) 18.Qf2 (18.Qg2!? Nd7 19.Qd5 Nb6+–) 18...Nd7+/- 19.Bc1 (19.e4+/-) 19...Qf6 (better is 19...Qh5!?+/-) 20.Qg2+– Qd8 21.e4 de4 (21...Nb6 22.e5 Be7 23.Qe2+–) 22.Be4 Ra7 (22...Rb8 23.Qh3 g6 24.Bd5+–) 23.Qh3 g6 24.Bd5 Nf6 (24...h5+–) 25.Bg5 Be7 (25...Qd7 26.Qd7 Nd7 27.Bh6+–) 26.Bb3 (26.Re7 Qe7 27.Rf6 c6 28.Rf7 Qf7 29.Bf7 Raf7+–) 26...c6? (26...c5 27.dc5 Ne4+–) 27.Qh4 Nd5 28.Re7! Re7 (28...Re7 29.Be7 Double attack; 28...Ne7 29.Re1 Decoy) 29.Bd5 Qd5 30.Be7 Re8 31.Bf6 h5 (31...Re2 32.Qh3 Qe4 33.Qc8 Qe8 34.Qe8 Re8 35.Be5+–) 32.Qf4 (better is 32.Be5!? Re6+–) 32...Qd6 (32...Qe4+–) 33.Be5 1–0. Menouar,Elhadi – Maakni,Mouloud, 3rd President ALG Open, 2015.

5.Be2 e4 6.Nd4 Nc6 7.b5 Nd4 8.Bd4 Be7 9.Nc3 d5 10.a4 0-0 11.Na2 Qc8 12.Bf6 Bf6 13.Nc3 Be6 14.d3 Bc3 15.Kf1 Ba1 16.de4 Bc3 17.ed5 Bf5 18.g3 Re8 19.Bf3 Qd7 20.Kg2 a6 21.ba6 Bh3 22.Kg1 Ra6 23.Be2 Ra4 -+. TD_6 – Oort, ICS rated light match, 1998.

5.Be2 Be7 6.Nc3 =.

5.b5 a6

6.a4 a5 7.Be2 g6 (7...Be7 8.0-0=) 8.0-0 Bg7 9.c4 b6 (9...0-0 10.d4+=) 10.Nc3 (10.d4 ed4 11.Nd4 0-0+/-) 10...Bc8 (10...0-0 11.d4 Re8 12.de5 de5 13.e4+=) 11.d4+/- e4 (11...Nbd7!?+/-) 12.Nd2+– Bb7 13.Qc2 Qe7 14.d5 0-0 15.Nce4 Ne4 (15...Nbd7 16.Bd3+/-) 16.Bg7+– Re8 (16...Kg7 17.Ne4 Nd7 18.Rae1+/-) 17.Ne4 (17.Bb2 Nd2 18.Qc3 f6 19.Qd2 Nd7+–) 17...Kg7 18.Qc3 (18.Bd3 Nd7+–) 18...f6 19.Nd2 (19.Ng5 Bc8+–) 19...Nd7+/- 20.Bf3 (20.Nb3 Qe5 21.Qe5 Ne5+–) 20...Ne5 (20...Nc5 21.Nb3+/-) 21.Qd4 Bc8 22.h3 (22.Be4 Nd7+/-) 22...Bf5 23.g4 (23.Be4 Nc6 24.bc6 Be4+/-) 23...Nf3 (23...Bd3 24.Rfe1 h6 25.Bg2+–) 24.Nf3 Bd7 25.Rad1 (25.Qf4 h5+/-) 25...Qe4 (25...h5 26.gh5 Bh3 27.h6 Kh7 28.Rfe1+/-) 26.Qe4 Re4 27.Rd4 Re7 28.Nh4 (28.Kg2 Rae8+/-) 28...Rae8 29.Rfd1 (29.Kg2 g5 30.Nf3 h6+/-) 29...h6 30.Kg2 (30.Nf3 Kf7+/-) 30...Rf7 (30...f5 31.gf5 g5 32.Rg4+/-) 31.Kg3 (31.Nf3 Rfe7+/-) 31...f5 32.Ng2 (32.Rg1 Kf6+/-) 32...g5 33.f3 Ref8 34.Rf1 fg4 (34...Re7 35.f4+/-) 35.hg4 (35.Rg4?! Bg4 36.hg4 Re8=) 35...Kg6 36.f4 (36.Rdd1 h5 37.gh5 Kh5 38.Rh1 Kg6+/-) 36...Rh7 37.f5 Kf6 38.Rh1 Rfh8 (38...h5 39.Rdd1+/-) 39.Rdd1 (39.e4 Be8+/-) 39...h5 40.e4 h4 41.Kh3 (41.Kf3 Re8+/-) 41...Re7 42.Rhe1 (42.Rd4 Ke5 43.Rd2 Rhe8+=) 42...Rhe8 43.Rd4 Ke5 44.Rd2 Kf6 45.Rde2 Ke5 46.Rd1 (46.Ne3 Kd4+/-) 46...Kf6 47.Rd4 Ke5 (47...Bc8 48.Ne1+/-) 48.Rd3 Kf6 49.Rde3 Re5 50.Ne1 R5e7 51.Nf3 Bc8 52.Nd4 Bd7 53.Ne6 White is in command 53...Bc8 54.e5 de5 55.Re5 Be6 56.de6 (56.fe6 Rg7+–) 56...Rd8 (56...Rc8 57.c5+–) 57.Rd5 Rd6 (57...Rd5 58.cd5 Re8 59.Kg2+–) 58.Red2 Re8 (58...Rd5 59.cd5 Ke5 60.Rf2+–) 59.Rd6 cd6 60.Rd6 Rb8 (60...Rc8 61.Rc6 Rd8+–) 61.Rd7 Rc8 (61...Re8 62.Rf7 Ke5 63.e7+–) 62.Rf7 (62.e7 Re8+–) 62...Ke5 63.Rg7 (better is 63.e7!? Re8 64.c5 bc5+–) 63...Kf6 (63...Rc4 64.Rg5 Kd6 65.Rg7+–) 64.Rg6 Ke5 (64...Ke7 65.Rg5 Rc4 66.Rg7 Kf6 67.Rh7 Ra4 68.Kh4+–) 65.Rg5 (better is 65.e7 Kf4 66.Rc6 Re8+–) 65...Rc4 66.Rg8 (better is 66.e7 Rc3 67.Kh4+–) 66...Kf4 (66...Kd6+–) 67.e7 Rc3 68.Kh4 Rc1 Threatening mate... how? 69.Kh5 Rh1 70.Kg6 Rg1 71.Kf6 (better is 71.e8Q Rg4 72.Kf6 Rg8 73.Qg8 Kf3+–) 71...Rh1 72.e8Q Rh6 1–0. Garet,Jacques (1840) – Dautricourt,Jacques, Le Touquet op Sen, 2002.

6.a4 ab5 7.ab5 Ra1 8.Ba1 Be7 9.Be2 c6 10.c4 cb5 11.cb5 Qb6 12.0-0 Bb5?? (better 12...0-0=) 13.Qb3+- 0-0 14.Nc3 Nbd7 15.Qb5 Qb5 16.Bb5 Nc5 (16...Ra8 17.d4+-) 17.d4 Nce4 (17...ed4 18.Nd4 Ra8 19.Rd1+-) 18.Ne4 Ne4 19.de5 de5 20.Ne5 Bf6 (20...Rd8 21.Bc4 Nd6 22.Bd5+-) 21.Nd7 Nd2 (21...Rc8 22.Nf6 Nf6 23.Bf6 gf6 24.Rb1+-) 22.Nf6 (better 22.Rd1!? Ba1 23.Nf8 Bc3+-) 22...gf6 23.Rd1 Nb3 (23...Rd8 24.Be2 Rd6 25.Bf6 Rf6 26.Rd2+-) 24.Bf6 Ra8 (24...Nc5 25.Rd4 Rc8 26.Kf1+-) 25.Rd7 h6 (25...Nc5 26.Re7 Rc8+-) 26.Bc4 Nd2 27.Bf7 Kf8 28.Bg6 Nc4 29.Rh7 Nd6 (29...Ra1 30.Ba1 Nd6 31.Bf6 Nf7 32.Rf7 Kg8 33.Rb7 Kf8 34.Rb8) 30.Rh8 1-0. GuestKPPC – GuestTLJQ, freechess.org, 2021.

5.c4 Be7

6.b5 0-0 7.Be2 c5 (7...e4 8.Nd4+=) 8.0-0 Be6 9.d3 a6 10.a4 ab5 11.ab5 Ra1 12.Ba1 Nbd7 13.Nbd2 (13.Ng5 d5=) 13...Qa5 (13...Qb6 14.Ng5=) 14.Qc2 d5 (14...Ra8 15.Bc3 Qb6 16.Ra1 Ra1 17.Ba1=) 15.Bc3 (15.Ne5 Qc7 16.Nd7 Qd7+/-) 15...Qb6 (15...Qc7 16.Ra1=) 16.cd5 (better is 16.Ne5!? d4 17.Nd7 Nd7 18.Ba1+/-) 16...Nd5= 17.Be5 Ne5 18.Ne5 Qb5 19.d4?? (better is 19.Ne4 Nb4 20.Qb2=) 19...Qe2-+ 0–1. GuestDWVK – GuestBHVN, freechess.org, 2017.

6.Be2 0-0 7.d3 e4 (7...d5 8.a3 e4 9.Ne5=) 8.de4 Ne4 9.Nbd2 Bf6 10.Nd4 Nd2 11.Qd2 (11.Kd2? c5 12.Ke1 cd4 13.Bd4 Nc6 14.Bf6 Qf6-+ (14...gf6?! 15.Qd6 Be6 16.Qd8 Rfd8 17.a3–/+)) 11...c5 12.bc5 dc5 13.Nf3 Qb6 14.Bf6 Qf6 15.0-0 Bc6 16.Rfd1 Qg6 (16...Nd7!?=) 17.Qd6+= Qg4 (17...Qd6 18.Rd6 Nd7 19.a3+=) 18.h3 (18.Qc5 Nd7 19.Qd6 Rfd8+/-) 18...Qe4 (18...Qf5!?+/-) 19.Bd3 Qe8 20.Qc5 Bf3 (20...f5 21.Nd4 (21.Bf5?! b6 22.Qe5 Qe5 23.Ne5 Rf5 24.Rd8 Rf8 25.Rb8 Rfb8 26.Nc6 Re8+=) 21...Qg6 22.g3+/-) 21.gf3 (21.Qf5 g6 22.Qf3 Nc6+–) 21...Nd7 (21...Na6 22.Qb5+/-) 22.Qf5 (better is 22.Bh7!? Kh7 23.Qf5 g6 24.Qd7+–) 22...Nf6+/- 23.Kh1 Qc6 24.Rg1 a6 (24...Rad8 25.Rad1+=) 25.Qg5 (25.e4!? Nd7 26.e5+/-) 25...Qf3+= 26.Rg2 (26.Qg2 Qg2 27.Kg2=) 26...Qh3 (better is 26...g6!?=) 27.Kg1+/- Nh5 (27...Nh5 28.Rh2 Qf3 29.Rh5 f5 30.Bf5 h6+–) 0–1. GuestMVHS – olimybebe, freechess.org, 2017.

5.Be2 a6

6.0-0 Ng4 7.Ne1 Qg5 8.Nf3 Qh6 9.g3 e4 10.Nh4 Bb5?? 11.c4 Bd7? 12.Bg4 g5 13.Bd7 Nd7 14.Bh8 Bg7 15.Bg7 Qg7 16.Ng2 Qa1 17.Nc3 Qb2 18.Nd5 0-0-0 19.Qc1 Qa2 20.Qc3 Qa4?? 21.Ra1+– Qc6 22.Ne7 Kb8 23.Nc6 bc6 24.Ra6 Nb6 25.Qa3 Kc8 26.d3 f5 27.de4 fe4 28.h3 Nc4 29.Ra8 Kd7 30.Rd8 Kd8 31.Qa8 Kd7 32.Qg8 h6 33.Qc4 d5 34.Qd4 Kd6 35.Qf6 Kd7 36.Qh6 Kc8 37.Qg5 Kb7 38.b5! c5 39.Qd5 Kb6 40.Qc6 (40…Ka5 41.Qc5+–) 1–0. valpa – Spion, playchess.de, 2003.

6.a3 Be7 7.0-0 Nc6 8.c4 0-0 9.d3 e4 (9...Re8 10.Nc3=) 10.Nfd2 (10.de4 Ne4 11.Bd3 Bf6 12.Be4 Bb2 13.Bh7 Kh8+=) 10...ed3= 11.Bd3 Qc8 (11...a5 12.b5 Ne5 13.Be2=) 12.Qc2+= Ne5 13.Nc3 Nd3 14.Qd3 Bf5 15.Qe2 (15.e4 Bg6+=) 15...Bg4 16.Nf3 Bh5 17.h3 (17.Nd5 Qd8=) 17...a5 18.b5 b6 (18...Qe6 19.Rfd1=) 19.Nd5+= Nd5 20.cd5 Qf5 21.g4 Bg4 22.hg4 Qg4 23.Kh1 f6 (23...Qh5 24.Kg2 Qg6 25.Kh2 Qh5 26.Kg3 Qd5 27.Rac1+/-) 24.Rg1 (24.Rfc1 Rac8+–) 24...Qh5+/- 25.Kg2 Rf7? (better is 25...Qd5!? 26.Rad1 Qe4+/-) 26.Rad1+– Raf8 27.Rh1 Qg4 28.Kf1 h6 (28...f5 29.Rd4 f4 30.Rc4+–) 29.Nd4 Qe2 (29...Qe4 30.Rh5+–) 30.Ke2 f5 (30...Re8 31.Ne6 Bd8 32.Rdg1+–) 31.Nc6 (better is 31.Ne6 f4 32.Rdg1 f3 33.Kd3 Bg5+–) 31...Bf6 32.Bf6 Rf6 33.Rc1 R6f7 (33...f4 34.e4+–) 34.Rcg1 (34.Nd4 Re7+–) 34...Kh7 35.Nd4 Re8 36.Ne6 f4 (36...Rfe7 37.Rc1+–) 37.Ng5 Kg6 38.Nf7 Kf7 39.Rh2 fe3 40.fe3 Re5 41.Rd1 Re4 (41...Kg6 42.Rg2 Kh7 43.Rc1+–) 42.Rf2 Ke7 (42...Ke8 43.Rdf1 Re5 44.Rf8 Kd7 45.a4 Rd5 46.R1f7 Ke6 47.Rc7+–) 43.Rdf1 (43.Rc1 Kd8 44.Rf7 Re7 45.Re7 Ke7 46.Rc7 Kf6+–) 43...Kd7 44.Rf7 Kc8 (44...Re7+–) 45.Rg7 Rh4 (45...Re8 46.Rc1 Kb8 47.Rgc7 h5+–) 46.Rff7 (46.Rf8 Kb7 47.Rgg8 Rh2 48.Kd3 Rd2 49.Kd2 h5 50.Rb8 Ka7 51.Ra8 Kb7 52.Rgb8) 46...Rh2 47.Kd3 Rh1 (47...Kb7 48.Rc7 Kb8 49.Rcf7 Rc2 50.Kc2 h5 51.Rg8) 48.Rc7 Kd8 (48...Kb8 49.Rb7 Kc8 50.Rbf7 Rd1 51.Ke4 Rd4 52.Kd4 h5 53.Rg8) 49.Ra7 Rd1 50.Ke2 Rc1 (50...Re1 51.Ke1 h5 52.Rg8) 51.Rg8 1–0. GuestVQCP – guestfighter, freechess.org, 2017.

4.Nf3 Nbd7

5.Bb5 c6 6.Ba4 g6 7.0-0= Bg7 8.c4 0-0 9.d4 Nb6 10.Bb3 e4 11.Ng5 h6–/+ 12.Nh3 Nh5 13.Nf4 Qg5 14.Nh5+= Bg4 15.Qd2 Bh5= 16.Bd1? Nc4-+ 17.Qc2 Nb2 18.Qb2 Bf3 19.Bf3 ef3 20.g3 Rae8 21.Nd2 Re3 22.Rae1?? Rd3 23.Ne4 Qh5 24.h4 Bd4 25.Nf6? Bf6 26.Qf6 Qg4 27.Kh2 Rd2 28.Re4 Qe4 29.Qg6 fg6 (29...fg6 30.h5 Qe2 31.Rh1 Qf2 32.Kh3 Qg2 33.Kh4 Qh1 34.Kg4 Qh5) 0–1. gtate (1625) – gbsr (1820), net–chess.com, 2001.

5.Nc3 b6 6.Bb5 Bb7 7.0-0 Be7 8.a3 0-0 9.Ba4 Ne4 (9...c5 10.d4+=) 10.Bb3 (10.Ne4 Be4 11.d4 ed4 12.Qd4 Nf6+=) 10...Ng5 (10...Nc3 11.Bc3 Nf6 12.d3=) 11.Ng5 Bg5 12.Qg4 Bf6 13.Nd5 Bh4 (13...c6 14.Nf6 Nf6 15.Qh4+=) 14.f4 (14.Nc7 Bf2 15.Rf2 Qc7+/-) 14...c6+= 15.Nc3 (15.Nc7 Qc7 16.Qh4 a5+/-) 15...Ba6 (15...Bf6 16.fe5 Be5 17.d4+=) 16.Rf3 (16.d3 Bf6+=) 16...Bf6 17.Ne4 (better is 17.Rh3 ef4 18.Qf4=) 17...Be7?? (better is 17...Be2–/+) 18.Rg3 (18.fe5 de5 19.Qf5 Bb7+–) 18...g6 19.f5 (better is 19.fe5 de5 20.Qh5+/-) 19...Nf6? (better is 19...d5+=) 20.Nf6+– Bf6 21.fg6 (21.fg6 d5 22.gh7 Kh8 23.e4+–) 1–0. Margraf,A – Kreyer, Landsberg, 1988.

5.Nc3 d5 6.a3=.

5.Nc3 h6 6.e4 c6 7.a3 Qc7 8.Bc4 Be7 9.Bb3 Nb6 10.0-0 0-0 11.Re1 Bg4 12.h3 Be6 13.d3 a6 14.d4 ed4 15.Nd4 Bb3 16.cb3 Rfe8 17.Nf5 Kh7 18.b5 ab5 19.Qc2 Bd8 20.Nd6 Re6 21.e5 g6 22.Qd2 Qd7 23.Rad1 Bc7 24.Bc1 Ng8 25.Qf4 Bd6 26.ed6 Rae8 27.Re6 Qe6 28.Qe3 Nd7 29.Bd2 b6 30.Re1 Qe3 31.Be3 Ngf6 32.Rd1 g5 33.Bd4 Kg6 34.f3 Ra8 35.a4 ba4 36.ba4 Kf5 37.Re1 Nd5 38.Nd5 cd5 39.Re7 Ra4 40.g4 Kg6 41.Rd7 Rd4 42.Re7 Rd1 43.Kf2 Rd2 44.Ke1 Ra2 45.d7 Ra8 46.Re8 Ra1 47.Kf2 Ra2 48.Kg3 Ra8 49.Ra8 1–0. Palmkoeck,William – Andersson,Egart, corr TKM/A004, 2000.

5.Bc4 Be7 6.0-0 0-0 7.Nc3 a6 8.Qe2 b5 9.Bb3 Bb7 10.Rfd1 Ne4 11.Ne4+= Be4 12.d4 c6 13.de5 d5 14.Nd4 Qc7 15.f4 Nb8 16.Qg4 c5?? 17.bc5 Bc5 18.e6 g6 19.ef7 Rf7 20.f5 Bd4 21.Rd4 Bf5 22.Qg5 Nc6 23.Rh4?? Qd7 24.Rd1+– Be6? 25.c4 Raf8?? 26.cd5 a5 27.de6 Qd1!? (27...Qd1 28.Bd1 Rf1#) 0–1. kehrsam – Nexxus6, ChessWorld.net, 2007.

5.d4 Qe7 6.Be2 g6 (6...e4 7.Nfd2= d5 8.a3 a5 9.b5 Nb6 10.c4 Nc4 11.Nc4 dc4 12.Nd2=) 7.c4 (7.0-0 e4 8.Nfd2 d5 9.Ba3 Qe6 10.c4 Nb6 11.b5 dc4 12.Bf8+=; 7.a3 e4 8.Nfd2 a5 9.b5 Bg7 10.0-0 0-0 11.c4 c5 12.Nc3+=; 7.d5 Bg7 8.0-0 e4 9.Nfd2 Ne5 10.Nc3 Bf5 11.Nb3 0-0-0 12.a4=; 7.de5 de5 8.a3 Bg7 9.0-0 0-0 10.Nbd2 Rd8 11.e4 c5 12.Rb1=) 7...Bg7 (7...e4 8.Nfd2 Bg7 9.0-0 a5 10.b5 0-0 11.Nc3 Nb6 12.c5+=) 8.Nc3 (8.0-0 a5 9.a3 ab4 10.ab4 Ra1 11.Ba1 e4 12.Nfd2+=) 8...0-0 (8...ed4 9.Nd5 Nd5 10.cd5 0-0 11.Bd4 Ne5 12.Ne5+=) 9.0-0 b6 (9...a5 10.a3 ab4 11.ab4 Ra1 12.Ba1+=) 10.a4 (10.d5 a5 11.a3 h6 12.Qd2+=) 10...a5 (10...c5 11.bc5 bc5 12.Rb1=) 11.ba5 (11.b5 Re8+= 12.Qc2+=) 11...Ra5= 12.de5 (12.Rb1=) 12...Ne5 13.Nb5 (13.Nd4 Re8=) 13...Ne4+= 14.Ne5 Be5 15.Be5 de5 16.Qd5 (16.Qc2 Nc5+=) 16...Nc5 (16...Nc3! 17.Qd2 Na4+=) 17.Qc6= Bb7 18.Qc7 Qc7 19.Nc7 Na4 20.Rac1 (20.Ra3 Rc8 21.Nb5 Nc5=) 20...Rc8 21.Nb5 Ba6 (21...Bc6 22.Nd6 Rd8 23.Rfd1+=) 22.Nd6= Rd8 23.Rfd1 Kf8 24.Ne4 (24.Rd3!?=) 24...Rd1–/+ 25.Bd1 Ke7 (25...Nb2 26.Nf6–/+) 26.Kf1 f5 27.Nd2 Nc5 28.Be2 Kd6 29.Rb1 Kc7 30.Nf3 Ne4 31.Rc1 Rc5 32.Ke1 Bb7 33.g3 Ra5 34.h4 h6 (34...Bc6!?+=) 35.c5+= Rc5 36.Rc5 bc5 37.Ne5 g5 (37...Bd5 38.Ng6 c4 39.Nf4+=) 38.Nf7 gh4 39.gh4 Bd5 (39...h5 40.Bh5 c4 41.Nh6+/-) 40.Nh6+/- Be6 41.f3 Nd6 42.Bd3 Kd7 43.e4 fe4 44.fe4 (44.Be4!? Ke7 45.Kf2+/-) 44...Ke7 45.Kd2 Kf6 ½–½. Curic,Drazan (2205) – Eismont,Igor (2310), 10th WDB Easter Open, Essen GER, 2004.

5.Be2 b6 6.0-0= e4 7.Nd4 Bb7 8.a3 d5 9.Nc3 a6 10.d3 c5 11.bc5 bc5 12.Nb3 Be7 13.de4 de4 ½–½. Neumann,Frank (1650) – Feiertag,Manfred (1770), RSS7E schnell–47, 2009.

5.Be2 e4 6.Nd4+=.

5.Be2 Be7 6.0-0 0-0 7.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 Nbd7 7.0-0).

5.Be2 g6 6.0-0 Bg7 7.c4 0-0 8.d4 (---> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.d4 e5 7.Be2 Nbd7 8.0-0).

5.Be2 g6 6.d4 e4 7.Nfd2 d5 8.b5 c6 9.c4 Bg7 10.0-0 0-0 11.a4 Re8 12.a5 Rb8 (12...cb5 13.cb5 b6 14.ab6 Nb6 15.Nc3+=) 13.Nc3 Nf8 14.c5 (14.Ba3 dc4 15.bc6 bc6+–) 14...h5 (14...a6 15.b6+=) 15.Qc2 h4 (15...Bg4 16.b6+=) 16.Rfb1 h3 17.g3 (17.a6 ba6 18.bc6 hg2 19.Kg2 Re6+=) 17...Ng4 (17...Bg4 18.Bf1+=) 18.Bc1 (18.a6 b6+–) 18...Qf6+= 19.Nd1 Bd7 20.bc6 bc6 21.Rb8 (21.a6 Rb1 22.Rb1 Bc8+=) 21...Rb8 22.Rb1 Qd8 23.a6 Qc7 24.Rb8 Qb8 25.Qb2 (25.Nb2 Qd8=) 25...Qb2 26.Nb2 Bf6 (26...Nf6 27.f3 ef3 28.Nf3=) 27.Nb3 Bd8 28.Na4 Nf6 29.Bd2 Ne6 30.Nb6 Bc7 (30...Kf8 31.Nd7 Nd7 32.Na5=) 31.Na5 (31.Ba5 Kf8 (31...ab6? 32.a7 ba5 33.a8Q Kg7 34.Na5+–) 32.Bf1 Ke7 33.Bh3 Nc5 34.Nd7 Nb3 35.Bb4 c5 36.Nf6 Kf6 37.dc5 d4+–) 31...Nd8 (31...Bb6 32.cb6 ab6 33.a7=) 32.Nd7 Nd7 33.Nb3 (33.Bf1 Nb8+=) 33...Nb8 34.Ba5 Ba5 35.Na5 f5 36.Bf1 Kf7 37.f3 Ke6 (37...ef3 38.Kf2=) 38.fe4 de4 39.Kf2 Kd7? (better 39...g5+=) 40.g4+– Ke6 41.gf5 (41.gf5 gf5 42.Kg3+–) 1–0. Monaville,Guy – Goethals,Fernand, Belgian championship, 1970.

5.c4

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

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

5.c4 g6 6.Be2 Bg7 7.d3 0-0 (--> 1.b4 Nf6 2.Bb2 g6 3.Nf3 Bg7 4.c4 0-0 5.e3 d6 6.Be2 e5 7.d3 Nbd7).

4.Nf3 e4

5.Bc4? ef3-+ 6.0-0? (6.Qf3 Nbd7 7.Bb3-+) 6...fg2 7.Kg2 Ne4 (7...d5 8.Bb5 c6 9.Bd3 Bb4 10.Rg1-+) 8.d3 (8.Qh5 Ng5 9.Rg1 d5-+) 8...Qg5 9.Kh1 Bh3 (9...Bg4 10.f3 Bh3 11.Bf7 Ke7 12.Qe2 Bf1 13.Qf1 Ng3 14.hg3 Kf7 15.Qe1-+) 10.Nd2 (10.Qf3 Bf1 11.Qe4 Kd8 12.Nc3-+) 10…Qg2 0–1. Abulisonga,Cynthia – Jacobsen,Ole (1980), 1st West African Championship (WACC), 2006.

5.Nd4 a5 6.b5 c5 7.bc6 Nc6 8.Bb5 Qb6 9.a4 Be7 10.c4 0-0 11.Qc2 (better is 11.d3!?=) 11...Nb4–/+ (11...Nb4 12.Qb3 Nd3 13.Kf1 Be6–/+) 0–1. GuestMCFW – GuestSSJK, freechess.org, 2017.

5.Nd4 b6 6.Be2 c5 7.bc5 bc5 8.Bb5 Bd7+= 9.Bd7 Qd7 10.Ne2 (10.Nb3 Be7=) 10...Be7 11.c4 0-0 12.Nf4 (12.0-0 Nc6+=) 12...d5 (12...Nc6 13.d4+=) 13.cd5 (13.Nd5 Nd5 14.cd5=) 13...Nd5 (better is 13...g5!? 14.Nh5 Nd5=) 14.Nd5+/- Qd5 15.Nc3 (15.Qg4!? Qg5 16.Qe4+/-) 15...Qc4 (15...Qe6 16.0-0=) 16.Qg4 (16.Qb3 Qb3 17.ab3 Nd7=) 16...Bf6 (16...f5 17.Qe2 Qe6 18.d4+=) 17.Rc1 (better is 17.Ne4 Bb2 18.Nf6 Bf6 19.Qc4 Ba1 20.Ke2+=) 17...Nd7?? (better is 17...Qd3=) 18.Ne4 (18.Qd7 Rfd8 19.Qa4 Qd3+–) 18...Qe6 (18...Qa6 19.Nf6 (19.Nc5 Nc5 20.Rc5 Bb2–/+) 19...Nf6 20.Qf5+/-) 19.Qe6 fe6 20.Bf6 (20.Ba3 Rfb8 21.Nc5 Nc5 22.Bc5 Rb2+/-) 20...Nf6 (20...gf6 21.Nc5 Nc5 22.Rc5 Rac8 23.Rc8 Rc8+–) 21.Nc5 Rac8 22.0-0 Rf7?! (22...e5+–) 23.Ne6 Rc1 24.Rc1 h6 25.d4 Ne4 (25...Re7 26.Nc5+–) 26.Rc2 (26.f3 Nf6+–) 26...a5 (26...Re7 27.Rc8 Kf7 28.Nd8 Kg6 29.f3+–) 27.f3 Nf6 28.Rc8 Kh7 29.Ra8 Nd5 (29...Re7 30.Nf8 Kg8 31.Nd7 Kh7 32.Nf6 gf6 33.Kf2+–) 30.e4 Nc7 31.Nc7 Rc7 32.Ra5 Rc2 33.d5 Kg6 34.d6 Rc1 (34...Kf7 35.e5 Ke6 36.Ra8+–) 35.Kf2 Rc3 (35...Kf7+–) 36.d7 Rc2 37.Ke3 Rc3 38.Kd4 (better is 38.Kd2 Rc6 39.d8Q Kh7+–) 38...Rc1 39.Kd5 (better is 39.Ke5 Rd1 40.Rd5 Rb1+–) 39...Rd1 (39...Rb1 40.Kd6 Rb8 41.e5 Rb6 42.Kc7+–) 40.Ke6 1–0. GuestKPWS – chessradar, freechess.org, 2017.

5.Nd4 c5

6.Bb5 Bd7 7.bc5 dc5 8.Bd7 Qd7 (8...Nbd7 9.Nb3+=) 9.Nb3 (9.Ne2 Be7=) 9...Be7 10.0-0 0-0 (10...c4 11.Nd4=) 11.f3 b6 (11...c4 12.Nd4=) 12.fe4 Ne4 13.Qf3 Ng5 (13...Qc6 14.d3 Bf6 15.Bf6 (15.de4? Bb2 16.a3 Ba1 17.Na1 Nd7-+) 15...Nf6 16.Qg3=) 14.Qg3 (14.Qa8 Na6 15.Qf8 Bf8=) 14...g6 (14...Nc6 15.Na3=) 15.Qe5 (15.d3 f6+=) 15...f6= 16.Qg3 (16.Qf4 Nc6=) 16...Ne4 (16...c4 17.Nd4=) 17.Qf3+= Ng5 (17...Qc6 18.d3 Ng5 19.Qf2+=) 18.Qe2 (18.Qa8!? Nc6 19.Qf8 Kf8 20.Bf6 Bf6 21.Rf6 Ke7 22.Rf4+=) 18...Nc6= 19.Nc3 a6 (19...Rae8 20.a4=) 20.Qc4 (20.Na4 Bd8=) 20...Kg7 21.Ne4 f6 becomes the focus of attention (21.Qh4 Ne5=) 21...Ne5 (better is 21...Qg4 22.d3 Ne4=) 22.Qc3?? (22.Be5 Ne4 23.Qe4 fe5 24.a4= (worse is 24.Qe5 Bf6 25.Qg3 Ba1 26.Ra1 Rf6–/+)) 22...Ne4-+ 23.Nc5 Nc3 (better is 23...Bc5 24.Qb3 Nd2-+) 24.Nd7 Nd7 25.Bc3 Nc5 (25...Rac8 26.Rab1-+) 26.Rab1 b5 27.d4 (27.Bd4 Rac8 28.c3 Rfd8-+) 27...Ne4 28.Ba1 (28.Bb4 Bb4 29.Rb4 Rfc8-+) 28...Nd2 29.d5 (29.Rbd1 Nf1 30.Rf1 Rac8-+) 29...Nb1 30.Rb1 Bc5 (30...Rac8 31.c3-+) 31.Kf2 Rfe8 0–1. GuestFJQJ – GuestKTTJ, freechess.org, 2016.

6.bc5 dc5

7.Nb3 Nc6 8.Bb5= Be7 9.f3 Qb6 10.Na3 a6 11.Be2 Be6 12.fe4 0-0 13.0-0 Ne4 14.Bc4 Bf6 15.Be6 Bb2 16.Nc4+= Qd8 17.Rf7+/- Rf7 18.Bf7 Kf7 19.Nb2 Qe7 20.Qh5 Kg8 21.Qd5 Kh8 22.Rf1 Rd8 23.Qf7 b6 24.Qe7 Ne7 25.Nc4 Rb8 26.Rf7 Nd5+/- 27.Ra7 Kg8 28.Ra6 b5 29.Ne5 Nb4 30.Ra7+– Nc2 31.Rc7 c4 32.Nc4 bc4 33.Rc4 Nd2 34.Rc2 Nb3 35.Rb2 Kf7 36.Kf2 Ke6 37.Rb3 Ra8 38.a3 Ke5 39.h4 Rf8 40.Ke2 Ra8 41.g4 Ra7 42.Kf2 Kd5 43.Rb4 Ra3 44.Rb7 h6 45.Rg7 Ra8 46.Rf7 Ra6 47.Rf5 Ke4 48.Rf4 Ke5 49.Kf3 Rc6 50.Rf5 Ke6 51.Kf4 Rc1 52.Rh5 Rf1 53.Ke4 Rf6 54.Re5 Kd6 55.Rb5 Kc6 56.g5 hg5 57.hg5 Rg6 58.Kf5 Rg8 59.Re5 Kd7 60.g6 Rf8 61.Kg5 Kd6 62.Rf5 Rg8 63.Rf7 Ke6 64.Rb7 Kd5 65.Kf6 Rf8 66.Rf7 Rg8 67.g7 Ke4 68.Rf8 (68.Rf8 Rg7 69.Re8 Kf3 70.Kg7+–) 1–0. aschellen (1955) – Szandra (1940), internet, 2006.

7.Nb3 Nc6 8.Nc3 Be7 9.d3 ed3 (9...Bg4 10.Be2 Be2 11.Qe2 ed3 12.cd3 0-0 13.0-0 Qb6 14.Ba3 Nb4 15.d4) 10.Bd3 0-0 11.0-0 Be6 12.Qe2 Ne5 13.Rad1 Qb8 14.Be4 (14.Ba3 Nd3 (14...Rc8 15.Ne4) 15.cd3 Rc8+=) 14...Ne4–/+ 15.Ne4 Bc4 16.Qh5 Bf1 17.Rf1 Nc4 18.Bc3 b6 19.Qg4 Ne5 20.Qh3 Rd8 21.f4 Nc4 22.f5 Bd6 (better is 22...f6!? 23.Nf6 Bf6 (23...gf6?! 24.Qg4 Kh8 25.Qc4=) 24.Bf6 gf6 25.Qg4 Kf8 26.Qc4 Qe5–/+) 23.Qh5= Qc7 (23...f6!? 24.Nf6 gf6 25.Qg4 Kf8 26.Bf6 Bh2 27.Kh1 Rd7 (27...Ne3?? 28.Qg7 Ke8 29.Qe7) 28.Qc4 Qd6=) 24.Qg5+= Bh2 25.Kh1 Ne5 26.Qh4 (26.Kh2?? Nf3 27.Kh3 Qh2 28.Kg4 Qg2 29.Kf4 Ng5 30.Ng5 Qf1 31.Nf3 Qc4 32.Bd4 Qc2-+) 26...Nc4 27.f6 (worse is 27.Qh2 Qh2 28.Kh2 Ne3+=) 27...Ne3 28.fg7 Rd6 (28...Nf1?? 29.Nf6 Kg7 30.Nd7 Be5 31.Qg5 Kh8 32.Be5 Qe5 33.Ne5+–) 29.Re1 Bg3 (29...Ng2 30.Qh2 Ne1 31.Nf6 Rf6 32.Qc7 Rh6 33.Kg1 Nc2+=) 30.Ng3+– (30.Qg3?! Rh6 31.Kg1 Qg3 32.Ng3 Re6= (32...Nc2?? 33.Nf5 f6 34.Nh6 Kg7 35.Nf5 Kg6 36.Nh4 Kf7 37.Rf1+–)) 30...Re6 31.Nh5 Nd5 32.Re6 fe6 33.Nd2 Qe7 (33...Nc3?? 34.Nf6 Kf7 35.Qh7 Kf6 36.g8N Rg8 37.Qc7+–) 34.Bf6 Qf7 (34...Nf6?? 35.Nf6 Kg7 36.Qh7 Kf6 37.Ne4 Ke5 38.Qe7 Ke4 39.Qb7 Kd4 40.Qa8+–) 35.Ne4 h6 (35...Qg6+–) 36.Bb2 e5 (36...Qg6 37.c4 Ne3 38.Nhf6 Kg7 39.Nd5 e5 40.Be5 Kg8 41.Ne7 Kh7 42.Ng6 Nd5 43.cd5 Rc8 44.Ng5 Kg6 45.g4 hg5 46.Qh5) 37.Qg4 Re8 38.c4 Qe6 39.Qf3 Qe7 (39...Qf7 40.Qe2 Qf5 41.cd5 Rd8 42.g4 Qh7 43.Nef6 Kf7 44.Nh7 Kg8 45.N7f6 Kf7 46.Qe5 Kg6 47.Ne8 Kh7 48.g8Q Kg8 49.Qg7) 40.Kg1 Qf7 41.Qe2 Qf5 42.cd5 Rd8 43.g4 Qc8 (43...Qf1 44.Qf1 Rb8 45.Qf5 Rd8 46.Qg6 Rf8 47.Nef6 Rf6 48.Nf6) 44.Qf3 Kh7 (44...c4 45.Nef6 Kf7 46.Ne8 Ke8 47.g8Q Kd7 48.Qe6 Kc7 49.Qc6 Kb8 50.Be5 Qc7 51.Qc7 Ka8 52.d6) 45.Nef6 Kg6 46.Ne8! Re8 (46...Re8 47.Qf6) 47.g8Q! Rg8 (47...Rg8 48.Qf6) 48.Qf6 Kh7 49.Qf7 Kh8 50.Be5 Rg7 51.Qg7 1–0. Anonymous – comp, internet, 2011.

7.Nb3 Bd6 8.Bb5 Bd7 9.Bd7 Nbd7 10.Bf6 Nf6 11.d3 –/+.

7.Nb3 Bd6 8.Bb5 Nbd7 9.f4 a6 10.Be2 b5 11.a4 b4 12.d3 Bb7 13.0-0 0-0 14.de4 Ne4 15.Bd3 Qe7 16.N1d2 Ndf6 17.Ne4 Ne4 18.Qh5 f5 19.Bc4 Kh8 20.Na5 Nd2 21.Nb7 Qb7–/+ 22.Bd3 Nf1 23.Rf1 Qf7 24.Qh6 Qg6 25.Qg6= hg6 26.Rf3 Kg8 27.Bc4+= Rf7 28.Rg3 Kf8 29.Rg6+/- Rd7 30.Bg7! Ke8 31.Be6 Rc7 32.Bf6 Raa7 33.Rg8 Bf8 34.Be5 Rc6 35.Bf5 c4 36.Be4 Rc8 37.Bd6 b3 38.Rf8 Kd7 39.Bf5 Kd6 40.Rc8 (40.Rc8 Rf7 41.cb3 Rf5 42.g4+–; 40.Bc8?? bc2 41.Rf6 Ke7-+) 1–0. Sixty4 – naive, playchess.de, 2002.

7.Nb3 Bd6 8.d3 ed3 9.Na3 dc2 10.Bb5 Nc6 11.Qc2 0-0 12.Bc6 bc6 13.Nc4 Bc7 14.0-0 Be6 15.Ne5 c4 16.Nc4 Qd5 17.Ncd2 Bf5 18.Qc5 Qc5 19.Nc5 Nd7 20.Rfc1 Nc5 21.Rc5 Bd7 22.Rd1 Rad8 23.Kf1 Bh2 24.g3 Bg4 25.Rg5= Bh3 26.Ke1 f6 27.Rh5 Bg4 28.Rh2 Bd1 29.Kd1 Rd5 30.e4 Ra5 31.a3 Rc5 32.g4 Rb8 33.Ba1 Rd8 34.Rh3 Rg5 35.Rg3 h5 36.gh5 Rg3 37.fg3 Rd3 38.Kc2 Rg3 39.Nc4 Rh3 40.Bd4 a6 41.e5 fe5 42.Ne5 Ra3 43.Nd3 Kh7 44.Nc5 Kh6 45.Kb2 Ra5 46.Ne6 Kh5 47.Bg7 Rb5 48.Ka3 Kg6 49.Bc3 Rb6 50.Nc5= Kf5 51.Ka4 Kf4 52.Bd4 Kf3 53.Bf6 Ke3 54.Bg7 a5 55.Ne6 Kd3 56.Ka5 Rb1 57.Nc5 Kc4 58.Ne4 Rb5 59.Ka6 Kd3 60.Nf2 Ke3 61.Ng4 Ke4 62.Nh6 Rg5 63.Bb2 Rg3 64.Nf7 Kd5 65.Bc1 c5 66.Ka5 Rf3 67.Ng5 Rc3 68.Bb2 Rb3 69.Bf6 Rb4 70.Nh3 Rb8 71.Ng1 Rf8 72.Bc3 Kc4 73.Be5 Rf1 74.Bh2 Rf2 75.Bc7 Ra2 76.Kb6 Kd5 77.Bd8 Rb2 78.Ka6 c4 79.Bf6 Rf2 80.Bh8 Kc6 81.Ka5 Kc5 82.Ka6 Kb4 83.Bd4 Rd2 84.Bh8 c3 85.Bc3 Kc3 86.Nf3 Rd5 87.Kb7 Rf5 88.Nh2?? Rf4-+ 89.Kc6 Kd3 90.Kc5 Ke2 91.Kd5 Rh4 92.Nf1 Kf1 0–1. OrangoTango (2410) – Nexusgab (2385), 2003.

7.Nb3 Be7 8.Be2 0-0 9.0-0 Nc6 (9...Be6 10.f3=) 10.d3 (10.f3 Be6=) 10...Bf5 (10...Qc7 11.Na3+=) 11.f3 (11.de4 Qd1 12.Rd1 Be4=) 11...ef3 (11...ed3!? 12.cd3 Rc8+=) 12.Bf3= Be6 13.N1d2 (13.Bc6 bc6 14.Qf3 Qd6=) 13...Nd5 (13...Qc7 14.Rb1 Ne5 15.Qe2+=) 14.Qe1 (14.Qe2 Re8=) 14...Bh4 (14...Ncb4 15.Bd5 Bd5 16.Nf3=) 15.Qe2 Bg5 (15...Qg5!? 16.Rfc1 Qe3 17.Qe3 Ne3 18.Nc5 Bc8=) 16.Bd5+/- Qd5 (16...Bd5 17.c4 (worse is 17.Nc5 Qb6 18.Ba3 Rfe8+=) 17...Re8 18.cd5 Be3 19.Kh1 Qd5 20.Qg4+/-) 17.c4 Qd8 18.Nc5 (18.Ne4 b6+=) 18...Qb6 19.Nde4 (19.Ndb3 Rad8+/-) 19...Be3 20.Qe3 Qb2 21.Rab1 Qe5 22.Rb7 f5 (22...Rab8!?+/-) 23.Ne6+– Qe6 24.Qg3 (24.Qg5 g6 25.Qh6 Rf7 26.Rf7 Qf7+–) 24...Qe5 (better is 24...Qh6 25.Nc3 f4+–) 25.Qe5 Ne5 26.Nc5 (26.Nd6 g6 27.d4 Nf7 28.Nf7 Rf7+–) 26...Rac8 27.Ne6 (27.d4 Nc4 28.Ra7 Ra8 29.Ra8 Ra8+–) 27...Rf7 28.Rfb1 Re8 29.Rb8 (29.Nc7 Rd8+–) 29...Rfe7 30.Nc7 (30.Re8 Re8 31.Nc7 Rd8+–) 30...Rb8+/- 31.Rb8 Kf7 32.Nd5 Rd7 33.Rb3 g5 34.h3 (34.Kf2 Ng4 35.Kg3 Ne5+/-) 34...Ke6 35.Kf2 f4 36.Ke2 Rf7 37.Ra3 (37.Rb8 f3 38.gf3 Nf3+/-) 37...Rb7 38.Rb3 (38.Kd2 Rb2 39.Kc3 Rg2 40.Ra6 Kd7 41.Ra7 Kd6 42.Ra6 Kd7 43.Nf6 Kc7 44.Ra7 Kc6+–) 38...Rf7 39.Rb8 f3 40.gf3 Nf3 41.Ke3 Ng1 42.h4 Rf3 (42...gh4 43.Rg8 Rf3 44.Ke4+–) 43.Ke4+– gh4 44.Nf4 (44.Re8 Kd6 45.Rd8 Kc6 46.Rc8 Kb7 47.Rc7 Ka6 48.Rh7 h3+–) 44...Kd6 45.Rh8 (45.Rd8 Kc6+–) 45...Rg3 (45...Rf2 46.Rh7 h3 47.a4+–) 46.Rh7 Nf3 47.Rh6 (47.Ra7 h3 48.Ra6 Kd7+–) 47...Kc5 (47...Kd7 48.c5 Nd2 49.Kf5+–) 48.Rh5 (48.a3 Ng5 49.Kf5 Nf3+–) 48...Kc6+/- 49.Ne2 (49.d4 Nd2 50.Kf5 Nc4 51.Rh4 Nd6 52.Kf6 Ne8 53.Ke6 Re3 54.Kf5 Nd6 55.Kg4 a5+/-) 49...Nd2 50.Kd4 Rh3 (50...Rg4 51.Ke3 Nf1 52.Kf3 Nh2 53.Kf2+–) 51.Rh6 (51.Nf4 Rh2+–) 51...Kc7 (51...Kb7 52.Nf4 Rg3 53.Kc5+–) 52.Nf4 Rg3 (52...Rh1 53.Kd5 a5 54.Ne6 Kd7 55.Rh7 Ke8 56.Kd6 Nc4 57.dc4 Rd1 58.Kc6+–) 53.Kc5 Nf3 54.Rh7 (54.Ne6 Kd7+–) 54...Kd8 (better is 54...Kb8+–) 55.Kd6 Threatening mate... how? 55...Ke8 (55...Kc8 56.c5 Rg8+–) 56.Ne6 1–0. Murdzia,Piotr – Urban,Klaudiusz, Gdansk ch Poland, 1994.

7.Bb5 Nbd7 8.Nb3 a6 9.Bd7 Bd7 (worse is 9...Kd7 10.d3 Ke8 11.Bf6 Qf6 12.de4=) 10.Bf6 Qf6 (10...gf6?! 11.Nc3 f5 12.Qh5+=) 11.Nc3 (11.Qh5 Qf5 12.Qf5 Bf5–/+) 11...Qg6 12.Kf1 Bd6 13.Nd5 (13.d3 c4! 14.Nd2 ed3 15.Nc4 Bb4–/+) 13...Bg4 14.Qe1 0-0 15.h3 Be6 16.Nf4 Bf4 17.ef4 Bc4 18.Kg1 b6 19.g4 (better is 19.Qe3!?–/+) 19...Qf6-+ 20.Qe3?? (20.f5-+) 20...Bb3 21.ab3 (21.Qc3 Qc3 22.dc3 Bc2-+) 21...Qa1 22.Kg2 Qd4 23.Qg3 (23.Re1 Qd7-+) 23...Qd2 24.h4 (24.Qe3 Qc2 25.Re1 Rfe8-+) 24...Rfe8 25.h5 (25.Qe3 Qc2 26.Rc1 Qb2-+) 25...e3 26.Rf1 e2 27.h6 ef1Q 28.Kf1 Re1 29.Kg2 Qd5 0–1. Pachurka,Roland – Roth,Heinz Georg (1830), Schleswig Holstein–ch cand, 2005.

7.Ne2 Bd6 8.Ng3 0-0 9.Bf6 Qf6 10.Nc3 Bg3 11.hg3 Bf5 12.Nd5 Qd6 13.Nf4 Rd8 14.Be2 Nd7 15.Rb1 b6 16.g4 Be6 17.a4 Ne5 18.f3 Bd7 19.fe4 (19.a5 ba5 20.fe4 Rab8+=) 19...Ba4–/+ 20.d3 Bc6 21.c4 Ng6 22.0-0 Bd7 23.Nd5 Qg3 24.Rf3 Qe5 25.Rf2 Qg5 26.Qf1 Rf8 27.Rf5 (27.Ra1!?+=) 27...Bf5–/+ 28.ef5 Ne5 29.f6 Ng4?? (29...gf6 30.d4 cd4 31.ed4-+) 30.Ne7?? (better is 30.Qf5! Qf5 31.Ne7 Kh8 32.fg7 (32.Nf5?? Nf6 33.Ra1 a5-+) 32...Kg7 33.Nf5 Kf6 34.Bg4+=) 30...Kh8-+ 31.fg7 Kg7 32.Nf5 Kh8 33.Bg4 Qg4 34.Nh6 Qg6 35.Qf4 Rad8 36.Rd1 (36.Rf1 f6 (36...Rd3?! 37.Nf7 Rf7 38.Qf7 Qf7 39.Rf7–/+) 37.d4 cd4 38.ed4 Qd3-+) 36...a5 (36...Rd3? 37.Rd3 f6 38.Rd7+–) 37.d4 cd4 38.ed4 a4 39.Rd3 Rde8 40.Rg3 Re1 41.Kf2? Qe6-+ (41...Qe6 42.Qg4 Qg4 (42...Qh6 43.Ke1 a3 44.Kd1-+) 43.Ng4 Re4-+) 0–1. Gueler Berdasco,Martin (1920) – Cerrato Torrijos,Maria (2120), San Sebastian de los Reyes ESP, 2012.

7.Ne2 Be7 8.Nbc3 0-0 9.Ng3 Be6 10.Nge4 Ne4 11.Ne4 Qb6 12.Bc3 Nc6 13.a3 f5 14.Ng3 Bf6 15.Bf6 Rf6 (worse is 15...gf6 16.Bd3 Ne7 17.Qf3+–) 16.Nh5 Rh6 17.Nf4 Bf7 18.Bd3 Ne7 19.Rb1 Qc6 20.Qf3 Qf3 21.gf3 b6 22.Ba6 Kf8 23.Ke2 Rh4 24.Bb5 a6 25.Bd7 Rh6 26.e4 Rd6 27.Bf5 Nf5 28.ef5 Re8 29.Kd1 Re5 30.Ne6 Be6 31.fe6 Red5 32.d3 Re6 33.Re1 Rf6 34.Re4 Rdf5 35.f4 Rh5 36.Ke2 Rh2 37.Kf3 Rh4 Attacks the isolani on f4 38.Kg3 Rh5 39.Re5 Rg6 40.Kf3 Rh3 41.Ke4 Rd6 42.Rd5 Re6 43.Re5 Rf6 44.f5 Rh4 45.Ke3 Ra4 46.Rh1 h6 47.Ra1 Rg4 48.f4 Rg2 49.Rc1 Rg3 50.Kf2 Rh3 51.Rce1 Kg8 52.Rg1 Rf7 53.Rg6 Rh2 54.Kf3 Rc2 55.Rb6 a5 56.Ra6 Rd7 57.Re3 Rc3 58.Ra5 Rdd3 59.Rd3 Rd3 60.Kg4 c4 61.Ra4 c3 62.Rc4 Kf7 63.Rc7 Kf6 64.Rc6 Ke7 65.a4 Kd7 66.Rc4 Kd6 67.a5 Rd5 68.Rc3 Ra5 69.Re3 Ra1 70.Re6 Kd5 71.Re5 Kd4 72.Re7 Rg1 73.Kh3 Kd5 ½–½. gluv51 (2035) – condoru (2075), gameknot.com, 2015.

5.Nd4 d5

6.a3 Nc6 7.Nc6 bc6 8.c4 Bg4 9.Qc2 Bd6 10.d3 0-0 11.Nc3 Bf5 12.c5+= Be7 13.Be2 Rb8 14.0-0 a6 15.Rfd1 Re8 16.de4+/- Ne4 17.Bf3 Nc3+= 18.Qc3 Bf6 19.Qc1 Bb2 20.Qb2+= Re6 21.Rd4 Qf6 22.Rad1 Be4 23.Be4+= Re4 24.Qd2 Rbe8 25.Qd3 Qd4 26.ed4+/- Re1 27.Re1 Re1 28.Qf1 Rf1 29.Kf1 Kf8 30.Ke2 Ke7 31.f4 Kf6 32.g4+– g5 33.Kf3 Kg6 34.Kg3 f6 35.h4 h6 36.Kh3 gf4 37.Kg2 f5 38.Kf3 fg4 39.Kg4 f3 40.Kf3 h5 41.Kf4+– Kf6 42.a4 Kg6 43.Ke5 1–0. casouza (2220) – yetzaline (1925), net–chess.com, 2006.

6.a3 Bd6 7.Bb5 c6 8.Be2+=.

6.a3 Be7 7.c4 (7.Bb5 Bd7=) 7...c6 (7...dc4 8.Bc4 a5 9.ba5=) 8.Be2 (8.Nc3 dc4 9.Qc2 0-0=) 8...0-0 (8...dc4 9.Bc4 b5 10.Bb3+=) 9.0-0 c5 (9...dc4 10.Bc4 b5 11.Ba2=) 10.Nc2 (10.bc5 Bc5 11.cd5 Nd5+=) 10...cb4+= 11.ab4 White fights for the Initiative 11...dc4 12.Bc4 Nc6 13.b5 Nb4 (13...Bg4 14.f3 ef3 15.gf3+/-) 14.Nb4= Bb4 15.Qb3 Bc5 (15...Qd6 16.f3 Be6 17.Ra4+/-) 16.Nc3 (16.f3 Qe7=) 16...b6 (16...Qd2 17.Rfd1 Be3 18.Rd2 Bd2+–) 17.Nd5 Nd5 18.Bd5 Rb8 (18...Be6 19.Qc3 Qg5 20.Be4+–) 19.Ra7 Bf5 (19...Qe8 20.Qc3 Qe5 21.Qe5 Bd4 22.Bd4 Ra8 23.Qg7) 20.Bf7 (20.f3 ef3 21.Bf7 Kh8+–) 20...Kh8 21.Qc3 The mate threat is Qxg7 21...Rf7?? (21...Qg5 22.Bd5 Rf6+–) 22.Rf7 (22.Rf7 Qg5 23.Rg7+–) 1–0. Wall,Bill – Lerty, internet, 2003.

6.b5 c5 7.bc6 Nc6 8.c4 Be6 (8...dc4 9.Nc6 bc6 10.Bc4=+) 9.Ne6= fe6 10.cd5 ed5 (worse 10...Nd5 11.Qg4 Qd7 12.Qe4+–) 11.Bb5 Be7 12.0-0 0-0 13.Nc3 Qd6 (13...a6 14.Be2=+) 14.f4 (14.f3 a6 15.Be2 b5=) 14...ef3 (14...a6 15.Be2=+) 15.Qf3= Ne5 16.Qg3 (16.Qf4 Nfg4 17.Qg3 d4=) 16...Rad8 (16...Nc4 17.Qd6 Bd6 18.Bc4 dc4 19.Nb5=+) 17.Ne2 (17.Nd5 Qd5 18.Qe5 Qe5 19.Be5 Rd2 20.Bc4 Kh8+=) 17...Nc4=+ 18.Bc4 dc4 19.Bc3 Qg3 20.Ng3 b5 21.Rab1 a6 22.Nf5 Bc5 23.Nd4 (23.a4 Rd5 24.ab5 ab5=+) 23...Ne4 24.Ne6 (24.Ba5 Rf1 25.Rf1 Re8–/+) 24...Be3! 25.de3 Nc3 26.Rf8 (better 26.Nf8!? Nb1 27.Ne6-+) 26...Rf8 27.Rb2 Re8 28.Nc7 Re3 29.Na6 (29.Kf1 Rd3 30.Na6 Rd1 31.Kf2-+) 29...Nd1 30.Rb5 (30.Rf2 Nf2 31.Kf2-+) 30…Re1 0–1. Wister,Finn Arild – Bolstad,Anders, TCh–NOR Club, 2018.

6.b5 Bd6 7.c4 0-0 (7...c5 8.bc6 bc6 9.cd5 cd5 10.Nb5= (10.Qa4 Bd7 11.Bb5 Qb6 12.Nc3 0-0 13.Rb1) 10...0-0 11.Nd6 Qd6 12.Ba3 Qe5 13.Nc3; 7...Nbd7 8.Nc3 dc4 9.Bc4 0-0 10.Qc2 Re8 11.0-0 Nb6 12.Be2 Be5 13.d3) 8.Nc3 (8.cd5 Nd5 9.d3 (9.Nc3 Nc3 10.Bc3 Nd7 11.Be2 Nc5 12.0-0 Qh4 13.f4) 9...Qh4= (9...Bb4 10.Nd2 c5 11.bc6 Nc6 12.Nc6 bc6 13.de4) 10.g3 Qe7 11.Nd2 c5 12.bc6 Nc6 13.Bg2) 8...Be6 (8...dc4 9.Bc4 Be5 (9...c5 10.Nde2 a6 11.a4 ab5 12.ab5 Ra1 13.Ba1) 10.d3 (10.Ba3 Bd4 11.ed4 Qd4 12.Bf8 Kf8 13.Qa4) 10...Bd4 (10...Bg4 11.Qd2 Bd4 12.ed4 ed3 13.Bd3) 11.ed4 Qd4 (11...Bg4 12.Qd2 ed3 13.Bd3) 12.Qc2 (12.0-0 ed3 13.Qd3) 12...ed3 13.Bd3=) 9.Qb3 (9.cd5 Bd5 10.Nd5 Nd5 11.Nf5 Qg5 12.g4 Nf6 13.h4) 9...dc4 10.Bc4 (10.Qc2!?+= Be5 11.Ne6 fe6 12.Bc4 Qe7 13.f4) 10...Bc4+= 11.Qc4 Nbd7 12.f4 (12.0-0 Ne5 13.Qb3+= (13.Qe2 Re8+=)) 12...ef3 (12...Nb6 13.Qb3+=) 13.gf3 (13.Nf3=) 13...Ne5 14.Qe2 Bc5 (14...Re8 15.0-0+=) 15.Na4= Bb4 16.Rg1 (16.f4 Ng6 17.a3 Ba5=) 16...c5 (16...Re8!?+=) 17.bc6+= bc6 (17...Nc6!? 18.Nc6 bc6=) 18.f4+/- Ng6 19.Nc6 Qd6 20.Nb4 Qb4 21.Bf6 Qa4 22.Bc3 f6 23.Kf2 (23.Qg4 f5 24.Qd1 Qd7+/-) 23...Rac8+= 24.Qg4 Qd7?? (24...f5 25.Qh5+=) 25.Rab1 (25.Qd7 Rcd8 26.Qa7 Ra8+–) 25...Rfe8?? (25...f5 26.Qg3+/-) 26.Rb3 (better is 26.Qd7 Rcd8 27.Qa7 Ra8+–) 26...Rb8?? (26...Qd3 27.Rg3 Qd5 28.Kg1+/-) 27.h4 (better is 27.Qd7 Rbd8 28.Qa7+–) 27...Qf7+/- 28.h5 Nf8 29.Qf5 (29.f5 Red8+–) 29...Nd7+/- 30.Rgb1 Rb3 (30...Rb6 31.Bd4 Rd6 32.Rb7+/-) 31.Rb3+– Nb6 32.h6! Nd5 (32...gh6 33.Bf6) 33.hg7 Nc3 34.Rc3 Qa2 35.Rd3 (35.Qd7 Qe6 36.Qe6 Re6+–) 35...Qe6 (35...Qf7 36.Qg4+/-) 36.Qe6 Re6 37.Rd7 a5 38.Ra7 Rd6 39.d4 Rd5 40.Kf3 f5 41.Kg3 (41.Ke2 a4+–) 41...Rb5+/- 42.Kh4 Rb3? (better is 42...h6+/-) 43.Kg5+– Re3 44.Kf6 Re8 45.Ra5 Rd8 46.Ra7 (better is 46.d5 h6 47.Ke7 Rb8+–) 46...h5 47.d5 h4 48.Ke6 h3 49.Ra3 Re8 (49...h2 50.Rh3 Kg7 51.Rh2 Re8 52.Kf5 Rf8 53.Ke5 Re8 54.Kd6+–) 50.Kf5 (50.Kf6!? Rd8 51.Rh3 Rd6 52.Ke5 Rb6+–) 50...h2 51.Rh3 Kg7 52.Rh2 Rf8 53.Ke5 Kf7 (53...Re8 54.Kd6+–) 54.Ra2 Re8 55.Kd6 Kf6 (55...Re4 56.Rf2+–) 56.Ra7 (56.Ra6 Kf7+–) 56...Rd8 (56...Re4 57.Ra8+–) 57.Kc6 Rc8 58.Rc7 Rd8 59.d6 Ke6 (59...Ra8+–) 60.Re7 Kf6 61.Re1 Rc8 62.Kb7 Rd8 63.Kc7 Ra8 64.Kb7 (64.d7!? Kf5+–) 64...Rd8 65.Kc7 Ra8 66.d7 Ra7 67.Kc8 Ra8 68.Kb7 Rd8 69.Kc7 Ra8 70.d8Q (70.d8Q Rd8 71.Kd8+–) 1–0. De Cat,Ben – Keough,Robert (2080), 15th ch–NATO, The Hague NED, 2004.

6.c4 c5 7.bc5 Bc5 8.cd5 Qd5 9.Nc3 Qd8 10.Bb5 Bd7 11.Ne4 Ne4 12.Qc2 0-0 (12...Nf2!? 13.Kf2 Bd4 14.Qe4 Qe7 15.Bd7 Nd7 16.Qe7 Ke7 17.Bd4 f6+=) 13.Qe4+/- Re8 (13...Bb5 14.Nb5 Nc6 15.Qg4+/-) 14.Qb7+– Bd4 15.Bd4 Bb5 (15...Nc6 16.Bc6 Bc6 17.Qc6 Qd4 18.Rd1+/-) 16.Qb5+– (16.Qa8? Qd4 17.Rd1 Qc4-+) 16...Nc6 (better is 16...Re6 17.0-0 Nc6+–) 17.Bg7 (17.Qc6?! Qd4 18.Qc3 Qd5+/-) 17...Kg7 18.Qc6 Rc8 19.Qa4 Qd3 20.Qb3 Qa6 21.h4 Rb8 22.Qc3 Kg8 23.Rh3 Qh6 (23...Rb6 24.h5 f6 25.Rg3 Kh8 26.Rc1+–) 24.Rg3 Kf8 25.Rc1 Qd6 (25...Rb7 26.Rg4 f6 27.Qc5 Rbe7 28.Qd5+–) 26.Qg7 Ke7 27.Rf3 (27.Rf3 Rf8 28.Rf4+–; worse is 27.Qh7 Rb2 28.Rc2 Rb1 29.Ke2 Qa6 30.d3 Qa5+–) 1–0. pierre – extopian, internet, 2011.

6.c4 Be7 7.Nc3 0-0 8.Qb3 c6 9.d3 (9.a3 a5=) 9...a5 10.a3 ab4 11.ab4 Ra1 12.Ba1 Qd6 (12...dc4 13.dc4 Bd6 14.h3=) 13.c5= Qe5 (13...Qc7 14.de4 de4 15.Be2=) 14.de4+= de4 15.Bc4 (15.g3 h6+=) 15...Qg5= 16.g3 Nbd7 17.Qb1 (17.h4 Qg6 18.Nce2 Ne5=) 17...Ne5–/+ 18.Bf1 (better is 18.Be2 Qg6 19.0-0+=) 18...Bf5?? (18...Qg6 19.Bg2 Nd3 20.Ke2 Qh5 21.f3–/+) 19.Nf5?? (better is 19.f4 ef3 20.Nf5+–) 19...Nf3-+ 20.Ke2 Qf5 21.Ne4?? (better is 21.Bg2 Nd2! 22.Qc2-+) 21...Ne4 22.Bg2 (22.Bh3 Qd5 23.Qc2-+) 22...Rd8 23.Rd1 Ng1! 0–1. Silva,Janderson Rossi Da (1805) – Supi,Luis Paulo (2505), Aberto Do Brasil Copel Telecom Sesc, 2016.

6.a3 c5

7.Bb5 Bd7 8.bc5 Bc5 9.0-0 0-0 10.Bd7+=.

7.Bb5 Bd7 8.bc5 Bc5 9.Be2 Nc6 10.Nb3+=.

7.bc5 Bc5 8.Nb3 Bd6 9.Bf6 Qf6 10.Nc3+=.

7.bc5 Bc5 8.c4 0-0 9.Qc2 (9.cd5 Qd5 10.d3=) 9...Re8 (9...Bd4 10.Bd4=) 10.cd5 =. Woelfelschneider,Peter – Rushton,Darren, T16–02.88, 2002.

7.bc5 Bc5 8.Be2 0-0 (8...Nc6 9.Nb3 Bd6 10.f4+=) 9.0-0 Nbd7 (9...Nc6 10.Nb3+=) 10.f3 Bb6 11.fe4 de4 12.Nf5 Bc7 13.Nc3 Re8 14.Nb5 Be5 15.Be5 Re5 16.Qe1 Nc5 17.Nfd4 a6 18.Qg3 Qe7 19.Nc3 Kh8 20.Rab1 Bd7 21.Bc4 h6 22.Rb6 Rg5 23.Qh4 Rg6 24.Rf4 Rc8 25.Ba2 Qd8 26.Rb4 Be6 27.Be6 (27.Ne6 Qd2 28.Qh3 fe6-+ (28...Qc3?! 29.Nc5 Rc5 30.Bf7–/+)) 27...Ne6 28.Rf2 Rc3 (28...Ng4!? 29.Qd8 Nd8+=) 29.Ne6+/- (29.dc3?! Rg4 30.Ne6 Qd1 (30...Rh4?? 31.Nd8 b5 32.c4+–) 31.Rf1 Qf1 (31...Rh4? 32.Rd1 fe6 33.Rb7+–) 32.Kf1 Rh4=) 29...fe6 30.dc3 Qd1 31.Rf1 Qc2 32.Qf2 Qc3 33.Rb7 ½–½. Wesseln,Rudolf – Poweleit,Andy, FC0031, 2001.

5.Nd4 Be7

6.Nc3 d5 7.a3 0-0=.

6.c4 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 e4 6.Nd4).

6.d3 c5 7.bc5 (7.Nb3 Bg4 8.Qd2 Qb6=) 7...dc5 8.Nb3 (8.Nb5 0-0+=) 8...Nc6 (8...c4 9.dc4 Qd1 10.Kd1+=) 9.N1d2 Bg4 10.Be2 Be2 11.Qe2 ed3 12.cd3 (12.Qd3 Qd3 13.cd3 Rd8=) 12...Nb4–/+ 13.d4? (better is 13.0-0 Nd3 14.Bd4 cd4 15.Qd3 de3 16.Qe3–/+) 13...Nc2-+ 14.Kf1 Na1 15.Ba1 cd4 16.ed4 (16.Qb5 Qd7 17.Qd7 Kd7 18.Nd4 Rhd8-+) 16...0-0 17.g3 (17.Nc5 Rc8 18.Ndb3 b6-+) 17...Qd5 Threatening mate... how? 18.Qf3 Rac8 19.Qd5 Nd5 20.Kg2 Rc2 21.Rb1 (21.a4 Rfc8-+) 21...Ra2 22.Rb2 Rb2 23.Bb2 Rc8 (23...Rc8 24.Kf3 Rc2-+) 0–1. Baker,Tim – Van Niekerk,Jan, IECC, 2003.

6.d3 d5 7.Qd2+=.

6.Be2 c5 7.bc5 dc5 8.Nb3 (8.Nb5 0-0+=) 8...Nc6 (8...0-0 9.d4+=) 9.0-0 Be6 10.d3 0-0 (10...ed3 11.Bd3 0-0 12.N1d2+=) 11.N1d2= ed3 12.cd3 (12.cd3 Rc8 13.Rc1=). Koivumaeki,Marko – Ventimiglia,Chuck (1645), IECC, 2001.

4.Nf3 Be7

5.a4 h6 (5...0-0 6.b5+=) 6.Be2 b6 (6...e4 7.Nd4+=) 7.0-0= Bb7 (7...e4 8.Nd4=) 8.d4 e4 9.Nfd2 Rg8 (9...c5 10.Bb5 Nbd7 11.bc5 bc5 12.dc5 dc5 13.Bf6 Bf6 14.Ra3=) 10.c4+/- g5 (10...d5 11.b5+/-) 11.d5 Bc8 (11...c6!? 12.Nc3 cd5 13.cd5 Nd5 14.Bb5 Nd7 15.Nde4 Nc3 16.Nc3 a6+/-) 12.Nc3+– Bf5 13.a5 g4 (13...c5 14.bc5 bc5 15.Qc2+–) 14.ab6 h5?? (14...cb6 15.Qc2 a5+–) 15.b7 Nbd7 16.ba8R Qa8 17.Nb5 (17.Nb5 Bd8 18.Ra7+–) 1–0. orane – ELCHIN777, caissa.com, 2006.

5.Bb5 c6 6.Be2 e4 =+.

5.Bb5 Nbd7 6.c4? (6.0-0 0-0=) 6...0-0 (6...c6 7.Ba4 e4 8.Nd4–/+) 7.Na3 (7.0-0 c6 8.Ba4 e4–/+) 7...c6 8.Ba4 Qc7 (8...e4 9.Nd4–/+) 9.d4 (9.0-0 d5 10.b5 e4 11.bc6 bc6+=) 9...e4 10.Nd2 d5 11.cd5 cd5 (11...Nd5 12.b5 cb5 13.Bb5+=) 12.Rc1 Qd8 13.b5 (13.Nc2 a5 14.Bc3 Qc7+=) 13...Nb6 14.Bb3 Be6 (14...Bg4 15.f3 ef3 16.gf3+=) 15.0-0 Bd6 16.h3 (16.f3 Qe7 17.Nab1 ef3 18.Qf3 Bg4–/+) 16...Ne8 (16...Qe7 17.Nab1+=) 17.f4 (17.f3 Qg5 18.Qe2 ef3 19.Nf3 Qe7+=) 17...Qf6 (17...Bd7 18.Qe2+=) 18.Qe2 (18.Qh5 Nc7+=) 18...Qg6 19.Kh1 (19.Kh2 Nc7+=) 19...Nf6–/+ 20.Bd1 (20.Kh2 Rac8–/+) 20...h5 (better is 20...Rac8!?–/+) 21.Nb3+= Nbd7 (21...Bf5 22.Nc5 Rab8 23.Bb3+=) 22.Qf2 (22.Nc5 Rab8=) 22...Bf5+= 23.Nc5 Nc5 (23...Rab8 24.Nb1+=) 24.dc5= Be7 25.Bb3 (25.c6 bc6 26.bc6 Rab8=) 25...Rad8 (25...Rfc8 26.c6 bc6 27.bc6=) 26.Rfd1 Attacking the backward pawn on d5 26...Be6 27.Rd2 (27.c6 bc6 28.bc6 Rc8+=) 27...Qf5 (27...Rc8 28.c6 Rfd8=) 28.Be5 (better is 28.c6!?+=) 28...b6+= 29.Bd4 White fights for the Initiative (29.Bd6 Bd6 30.cd6 Rd6 31.Rc7+=) 29...bc5 (29...Nd7 30.Qg3 f6 31.Nc2 bc5 32.Bc3–/+) 30.Bc5 Bc5 (better is 30...Rc8 31.Rdc2 Rc5 32.Rc5 Nd7–/+ (32...Bc5?! 33.Rc5 Rc8 34.Rc8 Bc8 35.Nc2+=)) 31.Rc5= g5 (31...Rc8!? 32.Rcc2 Nd7=) 32.Nc2 gf4 33.ef4 Rd6? (better is 33...Qh7!?+/-) 34.Nd4 (34.Ne3 Qg6 35.f5 Qg5 36.fe6 fe6+–) 34...Qh7? (better is 34...e3 35.Qe3 Qe4 36.Qg3 Qg6 37.Qg6 fg6+–) 35.f5 Bc8 (35...Qg7 36.fe6 fe6+–) 36.Qf4 (better is 36.Qg3!? Qg7 37.Qd6 e3+–) 36...Rfd8?? (36...Rd7 37.Nc6+/-) 37.Rc6 (better is 37.Rc8 Rc8 38.Qd6 Rc1 39.Rd1 Rd1 40.Bd1+–) 37...Rc6+/- 38.bc6 (38.Nc6 Re8 39.Qg5 Qg7+/-) 38...Qg7 39.Qc7 (39.c7 Re8+/-) 39...Qf8 (39...Re8 40.Rc2+=) 40.Qa7+/- Qd6 41.Qb6 (41.Rc2 e3+/-) 41...Re8 42.Re2 (42.Rc2 h4+/-) 42...Qf4 (42...h4 43.Rc2+=) 43.Re1 (43.c7!? Kg7 44.Qc5+/-) 43...e3 44.Nf3 (44.Bc2 e2 45.Nf3 Bf5 46.Bf5 Qf5+/-) 44...Bf5= 45.Qd4 Ne4 (45...Qd4 46.Nd4 Bc8 47.Bc2=) 46.Bd5 (better is 46.Kg1 Bh3 A) 47.Bd5 Bg2 48.Bf7 Kf7 (48...Qf7?! 49.Kg2 Qg6 50.Kh1-+) 49.Qd7 Re7 50.Qd5 Kg6 51.Qg8 Rg7 52.Qe8 Kh6 53.Qh8 Rh7-+; B) 47.Qd5?! Bg2 48.Qf7 Qf7 49.Bf7 Kf7 50.Kg2 Rg8 51.Kh2 Nd2 52.Nd2 ed2=; C) 47.Re3?? Bg2 48.Bd5 Bf3 49.Be4 Re4 50.Re4 Be4-+ (50...Qe4?! 51.Qe4 Be4 52.c7-+); D) 47.Qe3+=) 46...Qg3?? (better is 46...Nf2 47.Kg1 Qg3 48.Re3 Nh3 49.Kh1 Nf2 50.Kg1 Nh3 51.Kh1 Nf2 52.Kg1 Nh3=) 47.Be4 (47.Qe3 Qd6 48.Be4 Be4 49.Qg5 Kf8 50.Qh5 f5 51.Re4 Qd1 52.Kh2 fe4 53.Qh8 Ke7 54.Qg7 Kd8+–) 47...Re4 48.Qd8 (48.Qf6 Qg6 49.Qd8 Kh7 50.Ng5 Kg7 51.Ne4 Be4 52.Qd4 Kf8 53.Re2 Bc6 54.Qe3+–) 48...Kh7?? Black intends h4 (better is 48...Kg7+/-) 49.Qg5+– Bg4 50.hg4 Rg4 (50...hg4 51.Qf5 Kg7 52.Qe4 gf3 53.Rg1+/- (worse is 53.gf3 Qh3 54.Kg1 Qg3 55.Kh1 Qh3 56.Kg1 Qg3 57.Kh1=)) 51.Qf5 Kg8 Threatening mate: Qxg2 52.Re2 (52.Qc2 Qf2 53.Re2 Rh4 54.Nh4 Qh4 55.Kg1+–) 52...h4 (52...Rc4 53.Rc2 Rc2 54.Qc2+–) 53.Qe5 (better is 53.c7 Rc4 54.c8Q Rc8 55.Qc8 Kg7 56.Qc3 Kg6 57.Qe3 Kg7+–) 53...Rf4 (53...Rb4 54.Qe7 (worse is 54.Re3 Rb1 55.Ne1 Qe5 56.Re5 Rc1+–) 54...Rb1 55.Ng1+–) 54.Qg5 (54.c7 Rc4 55.Qe8 Kg7+–) 54...Kf8 (54...Qg5 55.Ng5 Rc4+–) 55.Qg3 (55.Qh6 Qg7 56.Qf4 Qa1 57.Kh2+–) 55...hg3 56.Re3 Rc4 57.Ng1 (57.Ng1 Rc6 58.Rg3+–) 1–0. Frech,Josef – Eder,Johannes, Schwarzach op–C, 2001.

5.Nc3 b6 6.Bc4 (6.e4 0-0=) 6...0-0 (6...d5 7.Bf1 e4 8.Ne5 Bb4 9.Bb5 Kf8 10.a3–/+) 7.b5 (7.a3 a5=) 7...Bb7 (7...a6 8.a4+=) 8.0-0= Nbd7 (8...a6 9.a4=) 9.d3 (9.a4=) 9...g6 (9...d5 10.Bb3+=) 10.Nd2 (10.e4 a6 11.a4 Nc5+=) 10...h5 (10...d5 11.Bb3=) 11.h3 (11.e4 a6 12.a4 Nc5+/-) 11...Kg7 (11...d5!? 12.Bb3 a6=) 12.f4+/- Nh7 (12...c6 13.Qf3 Rc8 14.Rab1+/-) 13.e4 (13.Nd5 Nhf6 14.Ne7 Qe7+/-) 13...ef4 (13...Nhf6 14.a4+/-) 14.Nd5 (14.Rf4 Bf6+/-) 14...Ne5 15.Ne7 (15.Qf3 Nf6 16.Qf4 Nd5 17.ed5 Bg5+=) 15...Qe7 16.Rf4 Ng5 (16...f5 17.ef5 Qg5 18.Qf1+/-) 17.Nf3 (17.Rf2 f6+/-) 17...Ngf3+= 18.Qf3 f6 19.Be5 (19.Qg3!?+=) 19...de5= 20.Rh4 f5 21.Qg3 f4 22.Qf2 Kh6 23.g4 (23.a4 g5-+) 23...fg3 24.Qg3 Qc5 (better is 24...Qg5 25.Kg2 Qg3 26.Kg3 g5-+) 25.Kh1 g5?? (25...Qf2 26.Qf2 Rf2-+) 26.Rg4?? (better is 26.Rg1 Qg1 27.Kg1+/-) 26...Qe7 1–0. Alley – Reddall, 1948.

5.Nc3 Bd7 6.b5 c6 7.a4 Qc7 8.e4 (8.Be2 0-0=) 8...Bg4 (8...0-0!?=) 9.Be2+= Nbd7 10.0-0 0-0 11.d4 Rfd8 12.Qd3 (12.Rb1 Bf3 13.Bf3 ed4 14.Qd4 Qb6+=) 12...Bh5 (12...ed4 13.Qd4 Ne5 14.Rfd1=) 13.Nh4 (13.Qe3!?+=) 13...Be2+= 14.Ne2 cb5 (better is 14...g6!?+=) 15.Nf5+= Bf8 16.ab5 g6 17.Nfg3 (17.Ne3 Bh6+=) 17...Rdc8= 18.c3 Qc4 19.Rfd1 (19.Qc4 Rc4 20.Rfd1 h5=) 19...Qd3 20.Rd3 a6 21.Ra5 (21.ba6 Ra6 22.Ra3 Ra3 23.Ba3 Ra8+=) 21...Nb6+= 22.ba6 ba6 23.de5 (23.Ra1 Nc4 24.Bc1 a5–/+) 23...de5 24.f3? (better is 24.Bc1–/+) 24...Nc4 25.Ra2 Nb2 (25...Bc5!? 26.Kh1-+) 26.Rb2 a5 27.Rd1 (27.Kf2 Bc5 28.Ke1 a4–/+) 27...a4-+ 28.Ra1 a3 29.Rb3 Nd7 30.Nf1 (30.Kf1 Rd8-+) 30...Rcb8 (30...Bc5 31.Kh1-+) 31.Nc1 (31.Nd2 Rb3 32.Nb3 Kg7-+) 31...Nc5 (31...Rb3 32.Nb3 Rc8 33.Nfd2 Rc3 34.Kf1-+) 32.Rbb1? (32.Rb8 Rb8 33.Ra3 Rb1-+) 32...Rb1 (32...Rb2!? 33.h4-+) 33.Rb1 Na4 34.Na2 Bc5 35.Kh1 Nb2 36.h3 (36.Nd2 Kg7-+) 36...Rd8 37.Kh2 Rd1 (37...Kg7!? 38.g4-+) 38.Rd1 Nd1 39.Nd2 Kf8 (39...Kg7 40.g4-+) 40.Nc4 f6 41.g3 Ke7 (41...Nb2 42.Nd2-+) 42.Kg2 Nb2 43.Nd2 Be3 44.Nb3 Kd6 45.Kf1 Bb6 46.Ke2 Kc6 47.Nbc1 Kc5 48.Kd2 Kc4 49.Kc2 f5 (49...Bf2 50.g4–/+) 50.Nb4–/+ Ba5 (50...fe4!? 51.fe4 Bf2–/+) 51.Nd5+= Na4 Increasing the pressure on the isolated pawn on c3 (better is 51...fe4 52.fe4 Na4 53.Ne3 Kb5 54.c4 Kc6–/+) 52.Na2?? (better is 52.Ne3 Kb5 53.c4 Kc6 54.ef5 gf5 55.Nf5+=) 52...fe4-+ 53.fe4 Nc5 54.Nf6 Na4 ½–½. Leon Manas,Jose Francisco (1705) – Santana Chacopino,Carlos, Torneo Fin de Temporada, 2009.

5.Nc3 e4 6.Nd4 d5 7.a3 0-0 8.Be2 Nbd7 9.0-0 c5 (9...Re8 10.Nf5=) 10.bc5 Nc5 11.d3 ed3 (11...Qc7 12.Ndb5 Qb8 13.Rb1=) 12.cd3+= a6 13.Bf3 h6 14.Rc1 Ne6 (14...Qd6!?+=) 15.Nf5+/- Ng5 16.Ne7 Qe7 17.Nd5 Nf3 18.Qf3 Nd5 19.Qd5 Be6 20.Qe5 f6 21.Rc7 fe5 22.Re7 Bf5 (22...Rfe8 23.Re8 Re8 24.Be5+–) 23.e4 Bg4 24.f3 Bh5 25.Re5 Be8 26.Rc1 Bc6 27.d4 Rae8 (27...Rac8 28.Rec5+–) 28.Re8 Re8 29.d5 Bb5 (29...Bd7 30.Rc7 Re7 31.Rb7+–) 30.Rc7 b6 (30...h5 31.Rg7 Kf8 32.Rb7+–) 31.Rg7 Kf8 32.Rh7 (32.Rh7 h5 33.Rh5+–) 1–0. Wall,Bill – Disturbants, internet, 2005.

5.Nc3 h6 6.d4 (6.Bd3 Bg4=) 6...ed4 (6...e4!? 7.Nd2 d5+=) 7.Nd4= 0-0 8.Bd3 c5 (8...Nbd7 9.0-0=) 9.bc5 dc5 10.Nf5 Bf5 (10...Nc6 11.0-0=) 11.Bf5 Qd1 (11...Qc7 12.Qf3=) 12.Rd1+= Nc6 13.0-0 (13.Ke2 Rad8+=) 13...Rad8= 14.Rde1 (14.a3 c4=) 14...a6 15.a4 Ne5 (15...g6 16.Bd3=) 16.Ne4 Nc4 (16...Ne4 17.Be4 Nc4 18.Bc3=) 17.Bf6+= Bf6 18.Nf6 (worse is 18.Nc5 Rd5 19.Nd7 Rf5 20.Nf8 Kf8-+) 18...gf6 19.Rd1 Nd2 (19...b6 20.Rd8 Rd8 21.Bd3+=) 20.Rfe1 c4 21.Bc8 b6 (21...Nf3! 22.gf3 Rd1 23.Rd1 Rc8+=) 22.Ba6+/- c3 (22...Rd6 23.Kh1+/-) 23.h3 (23.Bd3 Rd6+/-) 23...Rd5 (23...Rd6 24.Bb5+/-) 24.Bb7 (24.Ra1 Rfd8+/-) 24...Ra5 25.Ra1 Rd8 26.Ra3 (26.Red1 Kf8+/-) 26...Rc5 (26...b5 27.Rc3 ba4 28.Ra1+/-) 27.Kh2 (27.g3 f5+/-) 27...Rd7 28.Ba6 Ra7 29.Bd3 b5 30.Rea1 b4 31.R3a2 Rca5 (31...Rd7 32.Be2+=) 32.g4 (32.h4 f5+=) ½–½. Wall,Bill – Guest5341, internet, 2004.

5.Bc4 d5 6.Bb3 (6.Be2 e4 7.Nd4 Bb4 8.f3 (8.0-0 Be7 9.f3 c5 10.Nb3 0-0 11.fe4–/+) 8...0-0 9.0-0 a6 (9...Nbd7 10.Nf5–/+ 10...c6 11.fe4+=) 10.c4 ef3 11.Nf3–/+) 6...e4 (6...Bb4?! 7.Ne5 Bd6 8.0-0= 0-0 9.Qf3 Qe8 10.d4+=) 7.Ne5 (7.Bf6 gf6 8.Nd4 Bb4 9.Qh5 c6 10.c4+=) 7...Bb4 8.c4 (8.f3 Bd6 9.0-0 Qe7 10.f4–/+) 8...0-0 9.cd5 Nd5 10.Qh5 (10.0-0!? Be6 11.f3 ef3 12.Qf3+=) 10...Be6 11.Ng4 Bg4 (11...f5!? 12.Ne5 Nd7-+) 12.Qg4 (12.Qd5 Nc6+=) 12...Nf6–/+ 13.Qe2 Nc6 14.0-0 Bd6 15.f3 Be5 16.Nc3 (16.Be5 Ne5 17.fe4 Ne4+=) 16...Qd3–/+ 17.Qd3 ed3 18.g4 Na5 19.Rac1 Nb3 20.ab3 h6 (20...Rfd8 21.g5 Ne8 22.f4–/+) 21.Ba3 (21.Nd1!? Bb2 22.Nb2+=) 21...Rfd8–/+ 22.Kf2 c6 (worse is 22...Bh2 23.Be7 Be5 24.Bd8 Rd8 25.Rh1–/+) 23.h4 Nd5 24.Ne4 a5 25.f4 Bc7 26.Kf3 a4 27.b4 Bb6 28.h5 Nc7 29.g5 hg5 30.Ng5 Nb5 31.Bb2 Rd6 (better is 31...a3!? 32.Ba1 Nd6-+) 32.Rg1 Rh6 (better is 32...a3!? 33.Ba1 f5+=) 33.Ne4= f6? (better is 33...Bd8 34.Rg7 Kf8+=) 34.Nf6 Kf7 35.Nd7 Bd8 (better is 35...Bd4 36.ed4 a3+–) 36.Rg7 Ke8 37.Rc5 Be7 38.Re5 Kd7 39.Ree7 (39.Rge7?! Kd6 40.Rb7 a3+–) 39...Kd8 40.Rb7 Kc8 (40...Nd6 41.Rbd7 Kc8 42.Rc7 Kd8 43.Be5+–) 41.Rbf7 Rh8 42.h6 (better is 42.Rg6 Ra7 43.Ra7 Na7 44.Bh8+–) 42...a3 (42...Nd6 43.Rc7 Kb8 44.Rc6+–) 43.Ba1 (43.h7 Re8 44.Rg8 Nc7 45.Re8 Kb7 46.Ra8 c5 47.h8Q Kc6 48.Qf6 Kb5 49.Rc7 ab2 50.Rc5 Kb4 51.Qc3) 43...Nd6 (43...Ra7 44.Ra7 Na7 45.Rc7 Kc7 46.Bh8 c5 47.bc5 Nb5+–) 44.Rc7 Kb8 45.h7 (better is 45.Rc6!? Ra4 46.Rd6 Rf8+–) 45...Ne8 46.Rb7 Kc8 47.Rg8 (better is 47.Rgf7 Rh7 48.Rh7 Rb8+–) 47...Kb7 (47...Rg8 48.hg8Q (48.hg8R?! Kb7 49.f5 Rc8+–) 48...Kb7 49.b5+–) 48.Bh8 (better is 48.Rh8 c5 49.Rf8 cb4+–) 48...Nd6 49.Be5 Nf7 50.Rg7 1–0. Topouria,Kako – Gjoka,Genc, Angouleme, 2000.

5.Bc4 Bg4 6.Be2 Nbd7 7.d4 e4 8.Nfd2 Be2 9.Qe2 d5 10.b5 0-0 11.0-0 Bd6 12.c4 c6 13.a4 h5 14.Ba3 Qc7 15.Bd6 Qd6 16.h3 Kh7 17.Nc3 Rh8 18.f3 Kg8? (better is 18...ef3!? 19.Qd3 Kh6 20.Rf3 Rhe8+/-) 19.fe4+– Ne4 20.Nde4 de4 21.Ne4 Qg6 22.Qf3 Rf8 23.c5 f5? (23...b6+–) 24.Nd6 b6 (24...Rh6+–) 25.bc6 bc5 26.Qd5 Kh7 27.cd7 cd4 28.Qd4 Rf6 (28...Qe6 29.Nb7 Rd8 30.Rad1+–) 29.Nb7 Qg3 30.Rf4 Rg6 31.Qd5 Qe3 32.Rf2 Qc3 33.Raf1 Qh3 34.Qf5 Qh4 35.Rf4 (35.Rc1 Rb8 36.Rc8 Rb7 37.d8Q Qd8 38.Rd8+–) 35...Qe7 (35...Qg5 36.Qe4 Rb8+–) 36.Qh5 Rh6 37.Qf5 Rg6 38.Re4 Qg5 39.Qg5 Rg5 40.Rh4 (40.Rh4 Kg6 41.Rh8+–) 1–0. Cooper,Ni (1765) – Mitchell,R (1670), Oceania Zonal, 2011.

5.d3 Be6 6.Nbd2 Nbd7 7.Be2 Rc8 8.0-0 c6 9.a3 0-0 10.h3 Re8 11.c4 Nf8 (11...Qb6 12.d4=) 12.c5 (12.e4!?+=) 12...dc5= 13.Ne5 (13.bc5 Bc5 14.Ne5 N8d7=) 13...cb4=+ 14.ab4 Bb4 (14...a6!?=+) 15.Ra7= Bd2 (better 15...Qb6!? 16.Ra4 Qc5=) 16.Qd2+/- Ne4 17.Qc2 Qg5? (17...Nd6 18.Rfa1+/-) 18.Ng4?? (better 18.h4!? Qh4 19.de4 Rc7+-) 18...Bg4? (better 18...Nd6+/-) 19.Bg4+- (19.hg4?! Ng3 20.Rfa1 Ne2 21.Qe2 Rb8+=; worse 19.de4 Bh3 20.Bf3 b5-/+) 19...Qe3?? (19...f5 20.Rb7 Nf6+-) 20.Bf3 (better 20.fe3 Rc7 21.de4+-) 20...Qa7-+ 21.Bd4?? (21.de4 Ne6-+) 21...Qa5 (better 21...Qd4 22.de4 Ne6-+) 22.Bg7?? (22.de4 Ne6 23.Be3-+) 22…f6 (22...f6 23.Bf8 Nd2-+ (23...Kf8?! 24.de4 Rc7 25.Bg4-/+; 23...Rf8?! 24.de4 Rc7 25.Rd1-/+)) 0-1. opperwezen (2610) - JannLee (2600), lichess.org, 2018.

5.d4 ed4 6.ed4 (6.Qd4 0-0=) 6...0-0 (6...d5 7.a3=) 7.Bd3 Bg4 (7...d5 8.a3=) 8.Nbd2 (8.0-0 d5 9.a3 a5=) 8...d5 9.0-0 (9.a3 a5 10.b5 Nh5=) 9...Nbd7 (9...Bb4 10.h3 Bd2 11.hg4–/+) 10.h3 (10.a3 a5 11.b5 Re8=) 10...Bh5 (10...Bf3 11.Qf3 Bb4 12.c3–/+) 11.c3 (11.a3 Re8=) 11...c6 (11...Bd6 12.Re1=) 12.Qc2 (12.Re1 Re8=) 12...Qc7 (12...Re8 13.Rfe1=) 13.Bc1 (13.Ng5 Bg6=) 13...Bd6 (13...Rfe8 14.Re1+=) 14.c4 (14.Ng5 Bg6=) 14...Bf4 (14...dc4 15.Qc4 Nb6 16.Qb3+=) 15.cd5= Nd5 (15...cd5 16.Qc7 Bc7 17.Nh4=) 16.Bh7 Kh8 17.Be4 Nb4 18.Qb3 (18.Qb1 Nd5=) 18...a5 (18...f5 19.Bf5 Na2 20.Ra2 Rf5 21.Re1=) 19.Ba3 (19.a3 f5 20.Bf5 Rf5 21.ab4 Rb5+=) 19...Rfe8 (19...Nf6 20.Rfe1=) 20.Bb4 (20.g4 Nf6 21.Bf5 Bg6 22.Bg6 fg6 23.Bb4 ab4 24.Qb4 Nd5=) 20...ab4= 21.g4?? (21.Qb4 Nf6 22.Bd3 Nd5+=) 21...Bg6?? (better is 21...Bd2 22.Nd2 Ra3 23.Qb4 Rh3-+) 22.Bg6+= fg6 23.Qf7 (23.Qb4 Re2 24.Rae1 Rae8+/-) 23...Bd2= 24.Nd2 Qd6 25.Nf3 (25.Rfe1 Rf8 26.Qc4 Nb6+=) 25...Re7+= 26.Qc4 b5 (26...Rf8 27.Kg2+=) 27.Qc2 Rf8 28.Qd1 (28.Nh4 Kh7=) 28...Ref7 (28...Rf4 29.Rb1+=) 29.Ng5 Rf4 The isolani on d4 becomes a target 30.Qd2?? (30.Qb3!? Qf6 31.Ne6=) 30...Rd4?? 31.Qe3 Nf6 32.Qb3? Ng4!-+ 33.Nf7?? Rf7! 34.hg4 Rg4 35.Qg3 Rg3 36.fg3-+ Qg3 37.Kh1 Rf1 38.Rf1 Qh3 39.Kg1 Qf1! 40.Kf1 Kh7 41.Kg2 Kh6 (41...Kh6 42.Kf3 c5-+) 0–1. Bull_Dog_Baz – Steve20, ChessWorld.net, 2007.

5.Be2 c5 6.b5 (6.bc5!? e4 7.cd6 Bd6 8.Nd4+=) 6...Bd7 (6...e4 7.Ng1=+) 7.c4 Qb6 (7...e4 8.Ng1=+) 8.0-0 d5 ( 8...e4 9.Ne1 a6=) 9.Ne5+/- dc4 10.Nc4 Qd8 11.Nc3 0-0 12.d4 Be6 13.dc5 Bc4 (13...Bc5!? 14.Qd8 Rd8+/-) 14.Bc4+– (14...Nbd7 15.c6 bc6 16.bc6+–) 1–0. Slavisa2 – rate22, Live Game Caissa's Web, 2004.

5.Be2 Bd7 6.d4 e4 7.Nfd2 d5 8.b5 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 c6 12.bc6 bc6 13.c4 0-0 14.c5 Ne8 15.0-0 f5 16.Qa4 f4 17.Bc3 (17.ef4 Nc7=) 17...fe3 18.fe3 Rf1 19.Nf1 Bh4 20.Qa7 Nf6 (20...Qc7!? 21.Qb6 Be6=) 21.Ba5 (21.g3!? Bg5 22.Ba5+/-) 21...Qf8+= 22.g3 (22.Bc7 Ne8 23.Bf4 g5+=) 22...Bg5 (better is 22...Bg4 23.Nc3 Bg5=) 23.Bc7+/- Bg4 (23...Bh3 24.Bb8 Bf1 A) 25.Bf1? Be3 26.Kg2 Ng4-+ (26...Bd4?! 27.Bf4+=); B) 25.Kf1 Ng4 26.Bf4 Ne3 27.Kg1 Bf4 28.gf4=) 24.Bg4 Ng4 The mate threat is Qf2 25.Qb8 Qb8 26.Bb8 Ne3 27.Nc3 (27.Na3 Nf5 28.Nc2 Bf6+–) 27...Nc4 (27...Nc2 28.Be5+/-) 28.Ne2 Bf6 29.Kf2 g5 (29...Nb2 30.Ne3+–) 30.Ne3 Nb2 31.g4 Kf7 32.Nf5 Nc4 (32...Nd3 33.Ke3+–) 33.Nd6 Ke6? (33...Nd6 34.Bd6 Be7 35.Be7 Ke7+–) 34.Nc4 dc4 35.Ke3 Kd7 36.Ke4 Bd8 (36...Ke6 37.Be5 Be7 38.Nc3+–) 37.Bd6 (37.d5 Ba5+–) 37...Ba5 38.Bf8 (38.d5 cd5 39.Kd5 c3+–) 38...Ke6 39.Bh6 (39.Ng1 Bd2+–) 39...Kf6 40.d5 cd5 41.Kd5 c3 42.Nd4 Kg6 (42...Bc7 43.Ne6 Kg6 44.Bg5 (44.Nc7?? Kh6 45.Ne6 c2-+) 44...Bh2 45.c6+–) 43.Bf8 (43.Ke6 Bc7+–) 43...Kf7 44.Bd6 Ke8 45.Kc6 Kd8 46.Kb5 c2 (46...Bc7 47.Bc7 Kc7 48.Kc4+–) 47.Nc2 Bc3 (47...Bd2 48.Nd4+–) 48.Nb4 (better is 48.c6 Kc8 49.Ne3 Bf6+–) 48...Kc8 (48...Bb4 49.Kb4 Kd7+–) 49.Nd5 Bd4 If Black now only could play Kd7... 50.Kc6 (50.Kc6 Bg1 51.Bc7 Bc5 52.Kc5+–; better is 50.c6 Kd8 51.Ne7+–) 1–0. Plock,Joerg – Krawelitzki, Mecklenburg, 1999.

5.Be2 Nfd7 6.0-0 0-0 (--> 5.Be2 0-0 6.0-0 Nfd7).

5.Be2 Bf5 6.0-0 0-0 7.c4 a6 8.Nc3 c5 9.a3 cb4 10.ab4 Nc6 11.b5 ab5 12.Nb5 Ra5 13.Bc3 Ra6 14.d3 Ra1 15.Qa1 Qb6 16.Nd2 Bd7 17.Bf3 Nd8 18.Ba5 Qa7?? 19.Na7+– Nc6 20.Nc6 bc6 21.Bc3 Re8 22.Rb1 Rc8 23.Rb3 h6 24.Qb1 d5 25.Rb8 Bd6 26.Rc8 Bc8 27.cd5 c5 28.Ne4 Ne4 29.de4 g5 30.Qa1 f6 31.Qa8 Kg7 32.Qc8 g4 33.Bg4 Kg6 34.Qg8 1–0. casouza (2220) – gdraper (2010), net–chess.com, 2006.

5.h3 (--> 4.h3 Be7 5.Nf3).

5.a3

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

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

5.b5

5.b5 (--> 4.b5 Be7 5.Nf3).

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

5.Nc3 0-0

6.Bd3 Bg4 7.a3 d5 8.Be2 Nbd7 9.0-0 a5 10.b5 Bd6 11.Ng5 Be2 12.Qe2 Qe7 13.e4 d4 14.Na4 h6 15.Nf3 Nc5 (15...Nh5 16.Rfe1+=) 16.Nc5= Bc5 17.c3 Rad8 18.cd4 Bd4 19.Bd4 ed4 20.d3 a4 (20...Qd6 21.e5 Qe7 22.Rfe1+=) 21.Qc2+/- Nh5 22.Qa4 Nf4 23.Qc4 (23.Nd4? Rd4 24.Qa7 Qg5-+) 23...Qd7 24.h3 Qd6 25.Nh4 (25.Nh4 Qf6 26.Nf5+/-). marekt (2230) – fredrikm (2155), ICC, 2003.

6.Bd3 Bg4 7.a3 d5 8.Be2 e4 9.Ne5 Be2 10.Qe2 Nbd7 11.Nd7 Qd7 12.0-0 Bd6 13.f3 ef3 14.Qf3 Be5 15.d4 Bd6 16.e4 (worse is 16.Nd5 Nd5 17.c4 Nb6–/+) 16...de4 17.Ne4 Ne4 18.Qe4 Rae8 (18...c6 19.c4=) 19.Qb7+= Re2 20.Rac1 (20.Qa7 Bh2 21.Kh2 Qd5-+) 20...Qg4 21.Qf3 Qf3 22.Rf3 (worse is 22.gf3 Bh2 23.Kh1 Rfe8–/+) 22...Rfe8 23.d5 Rd2 24.Rf5 (better is 24.Rd3!? Ree2 25.Rd2 Rd2 26.Re1=) 24...Ree2–/+ 25.Rg5 f6?? (better is 25...g6 26.Rf1 Rc2–/+) 26.Bf6+= Kf7? (better is 26...g6 27.Rf1 Rc2+=) 27.Bc3+– h6?? (27...Rc2 28.Rc2 Rc2 29.Rg7 Kf8+–) 28.Rg7 Kf8 29.Rf1 Ke8 30.Bd2 (30.Bd2 Rd2 31.c4+–) 1–0. b4_player (2160) – piratov13 (1615), GameColony.com, 2002.

6.Be2 a6 7.0-0 Nc6 8.d4 ed4 9.Nd4 Nd4 10.Qd4 Bf5 11.e4 Bg6 12.f4 c5 13.bc5 dc5 14.Qd8 Rfd8 15.e5 Ne4? (better is 15...Bc2 16.ef6 Bf6) 16.f5 Nd2 17.fg6 Nf1 18.gf7 Kf8 19.Rf1 Rd2 20.Bd3 c4 21.Bh7 Rad8 22.e6 b5 23.Bc1 1–0. Wall,Bill – Bancini, chess.com, 2012.

6.Be2 e4 7.Nd4 Nc6 (7...c5 8.bc5 dc5 9.Nb3+=) 8.Nc6= bc6 9.d3 (9.a3 d5=) 9...d5 10.a3 ed3 11.cd3 a5 (11...c5 12.bc5 Bc5 13.0-0=) 12.Na2 (12.Qa4 Bd7 13.ba5 c5+=) 12...ab4 13.ab4 (13.Nb4 Qd6=) 13...Be6 (13...c5 14.bc5 Bc5 15.0-0=) 14.Bd4 Ra2 (14...Ra3 15.0-0=) 15.Ra2+= Bb4 16.Kf1 c5 17.Bf6 (17.Bb2 d4 18.Ra7 Nd5=) 17...Qf6 18.Ra6 (18.Ra7 c6=) 18...Rd8 (18...d4 19.Kg1=) 19.Ra7 (19.Kg1 d4=) 19...d4 (19...c4 20.Rc7 d4 21.e4= (21.dc4?? de3 22.Qd8 Qd8-+)) 20.e4 (worse is 20.Rc7 de3 21.Bf3 Bc4-+) 20...c4 21.Rc7 c3 22.Rb7 Bf8 (22...Bd6 23.Kg1=) 23.f3 (23.g3 Bh3 24.Kg1 Rc8=) 23...Qf4 24.Rb1 Rc8 25.Qc2 g5 (25...Ra8 26.Qc1 Qc1 27.Rc1+=) 26.Ra1 (26.g3 Bh3 27.Ke1 Qe3=) 26...Rb8 27.Rb1 (27.g3 Qe3 28.h4–/+) 27...Qd2 (better is 27...Rb1!? 28.Qb1 Bd6+=) 28.Qd2+/- Rb1 (28...cd2?? 29.Rb8 h6 30.Rb2+–) 29.Kf2 Rh1 30.Qg5 Bg7 31.Qd8 Bf8 32.Bf1 (32.Qc7 h6 33.Bf1 Bb3+=) 32...c2 33.Qg5 Kh8 34.Qc1 Bb3 35.h3 h5? (35...Bd6 36.g3 Be6 37.Kg2 (37.Qc2? Rh2 38.Bg2 Bh3-+) 37...Rh3 38.f4+– (38.Qc2?! Rg3 39.Kf2 Rg8+=)) 36.h4 (36.g3 h4+–) 36...Kh7? (36...Bd6 37.g3 Rh2 38.Bg2 Be6+=) 37.g3+– f5 38.Kg2 (38.ef5 Bh6 39.f4 Bg7+=) 38...Rf1 39.Kf1 (39.Qf1?? Ba3 40.Qa1 c1Q 41.Qd4 Be6-+) 39...fe4 40.de4 d3 41.Qg5 (better is 41.e5+–) 41...Ba3? (better is 41...Be6 42.Kf2 Ba3 43.Qh5 Kg8 44.Qe8 Kg7 45.Qe6 Bc5 46.Kg2 c1Q 47.Qd7 Kf8 48.Qd3 Be7+–) 42.Qh5 Kg7 (42...Kg8 43.Qe8 Kh7 44.Qd7 Kh6 45.Qc6 Kg7 46.Qc3 Kf8 47.Qc8 (47.Qb3?? c1Q 48.Kg2 Qc2 49.Qc2 dc2-+) 47...Kg7 48.Qg4 Kh8 49.Qc8 Kg7 50.Qg4 Kh8 51.Qh5 Kg8 52.Qg6 Kh8 53.Qf6 Kh7 54.Qf5 Kg8 55.Qg5 Kh7 56.Qf5 Kg8 57.Qc8 Kg7=) 43.Qe5 Kg8?? (43...Kh6 44.Qh8 Kg6 45.h5 Kf7 46.Qh7 Ke8 47.Qg6 Kd7 48.Qf5 Be6 49.Qb5 Ke7 50.Qg5 Ke8 51.Qg6 Ke7 52.Qg7 Ke8 53.Qh8 Kf7 54.Qh7 Ke8 55.Qg6 Ke7 56.Qg5 Ke8 57.Qb5 Ke7 58.Qg5=) 44.Qb8 Kg7 (44...Kh7 45.Qa7 (45.Qb3 c1Q 46.Kg2 Qc2 47.Qc2 dc2-+) 45...Bf7 46.Qf7 (46.Qa3?? d2 47.Kg2 d1Q-+) 46...Kh6 47.Qe6 Kg7 48.Qe5 Kh7 49.Qc7 Kg8 50.Qb8 Bf8 51.Qc8+–) 45.Qa7 (45.Qb3?? c1Q 46.Kg2 Qc2 47.Qc2 dc2-+) 45...Bf7 46.Qa3 0–1. Deep Blue Jr. – Bronstein,David, 1996.

6.Bd3 Nbd7

7.0-0 A) 7...a5 A1) 8.a3 d5 (8...h6 9.Qe2 Nb6 10.h3 Be6 11.Rfe1 c6 12.b5 c5; 8...Nb6 9.e4 h6 10.Qe2 Be6 11.Rfd1 c6 12.Re1 Re8) 9.e4 c6 10.Qe2 d4 11.Na2 Qc7 12.c3 dc3; A2) 8.b5 h6 (8...Nc5 9.Be2 a4 10.a3 Ne6 11.e4 Nc5 12.d4 Nce4; 8...d5 9.Be2 Bd6 10.d3 Nb6 11.Qd2 Bf5 12.h3 a4) 9.Be2 d5 10.Qc1 Re8 11.Ba3 Bb4 12.Bb2 Bd6; B) 7...c6 B1) 8.a3 d5 (8...a5 9.Qe2 d5 10.e4 d4 11.Na2 Qc7 12.c3 dc3) 9.e4 a5 10.Qe2 d4 11.Na2 Qc7 12.c3 dc3; B2) 8.e4 d5 (8...a5 9.a3 d5 10.Qe2 d4 11.Na2 Qc7 12.c3 dc3) 9.a3 a5 10.Qe2 d4 11.Na2 Qc7 12.c3 dc3; B3) 8.Bf5 g6 (8...d5 9.a3 e4 10.Nd4 g6 11.Bh3 Ne5 12.Bc8 Qc8) 9.Bh3 e4 10.Ng5 d5 11.f3 h6 12.Nf7 Rf7; B4) 8.Be2 h6 (8...d5 9.a3 Qc7 10.h3 a5 11.b5 e4 12.Nd4 Ne5; 8...Qb6 9.a3 a5 10.b5 Nc5 11.d4 ed4 12.Qd4 Qc7) 9.b5 cb5 10.Nb5 a6 11.Nc3 b5 12.h3 Bb7; C) 7...c5 C1) 8.a3 d5 (8...a5 9.Qe2 d5 10.Bb5 e4 11.Nh4 cb4 12.ab4 Bb4) 9.e4 c4 10.Be2 de4 11.Ng5 Qc7 12.Nge4 Ne4; C2) 8.bc5 Nc5 (8...d5 9.Be2 e4 10.Nd4 Bc5 11.f4 Bd4 12.ed4 Qb6) 9.Be2 Ne6 10.h3 Qa5 11.d3 Bd7 12.Qd2 Rac8; D) 7...d5 8.e4 c6 9.a3 a5 10.Qe2 d4 11.Na2 Qc7 12.c3 dc3.

7.Be2 a5 A) 8.a3 h6 (8...d5 9.0-0 h6 10.Qb1 e4 11.Nd4 Ne5 12.h3 c6; 8...Nb6 9.0-0 Bf5 10.d3 h6 11.Qd2 c6 12.e4 Be6) 9.0-0 d5 10.h3 e4 11.Nd4 Ne5 12.b5 c5; B) 8.b5 Nb6 (8...h6 9.0-0 d5 10.d3 Bd6 11.e4 d4 12.Na4 Qe7; 8...d5 9.0-0 Bd6 10.h3 h6 11.Na4 e4 12.Nd4 Ne5) 9.0-0 h6 10.Bd3 Be6 11.Qe2 Nbd7 12.e4 Nc5.

7.Be2 Nb6 A) 8.Bd3 a5 (8...Bd7 9.0-0 Nbd5 10.Nd5 Nd5 11.a3 Nb6 12.c3 Be6; 8...h6 9.0-0 Be6 10.Qe2 Nbd5 11.Nd5 Nd5 12.a3 Nb6) 9.a3 Be6 10.0-0 Nc4 11.Bc4 Bc4 12.d3 Be6; B) 8.a3 e4 (8...Be6 9.d4 a5 10.de5 de5 11.Ne5 ab4 12.ab4 Ra1; 8...h6 9.Bd3 Be6 10.Qe2 Qd7 11.0-0 Na4 12.Na4 Qa4) 9.Nd4 c5 10.Nb3 Be6 11.Na5 Nbd5 12.Nd5 Bd5; C) 8.h3 e4 9.Nd4 c5 10.bc5 dc5 11.Nb3 Be6 12.d3 ed3; D) 8.0-0 e4 9.Nd4 c5 10.bc5 dc5 11.Nb3 Be6 12.d3 ed3.

7.Be2 d5 8.a3 (8.b5 e4 (8...Bd6 9.0-0 Nb6 10.a4 h6 11.a5 Nc4 12.Bc4 dc4; 8...h6 9.0-0 Bd6 10.a4 Qe7 11.a5 Re8 12.Re1 e4) 9.Nd4 Ne5 10.0-0 a6 11.a4 Bc5 12.ba6 ba6) 8...a6 (8...a5 9.0-0 ab4 10.ab4 Ra1 11.Qa1 Bb4 12.Ba3 Qe7; 8...e4 9.Nd4 Ne5 10.0-0 a5 11.b5 h6 12.f4 ef3) 9.0-0 h6 (9...a5 10.b5 Bd6 11.Na4 Qe7 12.d3 e4) 10.Na4 (10.d3 a5 11.b5 Bd6 12.e4 d4) 10...e4 11.Nd4 b5 (11...a5 12.Bc3 Ne5) 12.Nc6 Qe8 13.Nc3 Bb7 14.Na5 Rb8 15.Nb7 Rb7 16.d3 c5 17.de4 de4 18.Nd5 Nd5 (18...Rb8!?+=) 19.Qd5+/- Nf6?? (better is 19...Rc7 20.Qe4 Bf6 21.Qe8 Re8 22.Bf6 Nf6+/-) 20.Qb7+– cb4 21.ab4 Qa8 (21...Bb4 22.Ra6 Be7+–) 22.Qe7 (22.Qe7 Re8 23.Qc5+–) 1–0. otto – kille, internet, 2011.

7.Be2 e4 8.Nd4 Ne5 (8...d5 9.b5 Ne5 10.0-0 a6 11.ba6 b6 12.f4 ef3) 9.f4 ef3 10.Nf3 Nf3 11.Bf3 d5 12.a3 a5.

7.Be2 h6 A) 8.h3 e4 (8...Nb6 9.0-0 Be6 10.e4 Qe8 11.d4 Na4 12.Na4 Qa4; 8...d5 9.b5 e4 10.Nd4 Nc5 11.0-0 Qd6 12.f4 a6) 9.Nd4 Ne5 10.0-0 c5 11.bc5 dc5 12.Nb3 Bf5; B) 8.e4 c6 (8...c5 9.a3 d5 10.Nd5 Nd5 11.ed5 e4 12.Ng1 Qc7) 9.d4 Qb6 10.a3 a5 11.b5 cb5 12.Qd2 ed4; C) 8.0-0 d5 (8...Nb6 9.Bd3 Be6 10.Qe2 Nfd5 11.Nd5 Nd5 12.a3 Nb6; 8...a5 9.b5 d5 10.d3 Bd6 11.e4 d4 12.Na4 Qe7) 9.b5 Bd6 10.a4 Qe7 11.Rb1 b6 12.a5 ba5.

7.e4 A) 7...c6 A1) 8.a3 d5 (8...a5 9.0-0 d5 10.Qe2 d4 11.Na2 Qc7 12.c3 dc3; 8...Nh5 9.g3 Ndf6 10.0-0 Bh3 11.Re1 Ng4 12.Bf1 Qb6) 9.0-0 a5 10.Qe2 d4 11.Na2 Qc7 12.c3 dc3; A2) 8.h3 d5 (8...a5 9.a3 d5 10.0-0 d4 11.Ne2 ab4 12.ab4 Ra1; 8...Nh5 9.Ne5 Ne5 10.Qh5 Bg5 11.Qd1 a5 12.b5 Be6) 9.a3 d4 10.Ne2 a5 11.c3 ab4 12.ab4 Ra1; A3) 8.Qe2 Nh5 (8...d5 9.0-0 d4 10.Na4 b5 11.Nc5 Bc5 12.bc5 Re8; 8...a5 9.b5 Nc5 10.0-0 Qb6 11.Ba3 Nd3 12.Qd3 c5) 9.Qe3 Nf4 10.0-0 Nf6 11.h3 Be6 12.Rab1 h6; A4) 8.0-0 a5 (8...d5 9.a3 a5 10.Qe2 d4 11.Na2 Qc7 12.c3 dc3) 9.a3 d5 10.Qe2 d4 11.Na2 Qc7 12.c3 dc3; B) 7...a5 8.a3 c5 (8...c6 9.0-0 d5 10.Qe2 d4 11.Na2 Qc7 12.c3 dc3) 9.ba5 Qa5 10.0-0 Nb6 11.Qe2 Bd7 12.a4 Na4.

5.c4

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

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

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

5.c4 0-0 6.Nc3 Bg4 7.Be2 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 Bg4 6.Be2 0-0 7.Nc3).

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

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

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

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

5.c4 Be6 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be6 5.Nf3 Be7).

5.c4 h6 6.Be2 0-0 (--> 1.b4 e5 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0-0 6.Be2 h6).

5.Bc4 0-0

6.0-0 e4!? 7.Nd4 d5 –/+.

6.0-0 Be6 7.Be6= fe6 8.Nc3 h6 (8...d5 9.Ne5 Bb4 10.a3=) 9.h3 (9.a3 Nc6=) 9...Nbd7 10.a4 (10.b5 a6=) 10...c6 (10...d5 11.b5=) 11.Ne2 (better is 11.b5=) 11...e4 (better is 11...a5!? 12.b5 cb5 13.ab5 Nb6=) 12.Nfd4+/- e5 (12...Rf7 13.Ne6 Qc8 14.d3+/-) 13.Ne6 Qe8 (13...Qb6 14.Nf8 Rf8 15.Rb1+/-) 14.Nf8 Nf8 (14...Qf8 15.Nc3+/-) 15.Ng3 Qg6 16.d4 (16.d3 Rd8+–) 16...ed4+/- 17.Bd4 Ne6 18.c3 (18.c4 d5+/-) 18...d5 19.a5 h5 (19...Nd4 20.ed4 Bd6 21.Ne2+/-) 20.Bf6 (20.a6 b6+–) 20...Bf6 21.Rc1 (21.a6 Rb8 22.ab7 Rb7+–) 21...h4 22.Ne2 Ng5 (22...Nc7 23.Qc2+/-) 23.Nf4 Qe8 (23...Qf5 24.Qh5+–) 24.Qg4 b6 (24...Nf7 25.Nh5 Qe7 26.Nf6 Qf6 27.Qd7+–) 25.Nh5 (25.c4 dc4 26.Rc4 Rd8+–) 25...Nh7 (25...Be7 26.ab6 ab6 27.c4+–) 26.Nf6 (26.c4 Qf7+–) 26...Nf6 27.Qh4 ba5 28.ba5 Qd8 29.Ra1 Rb8 30.a6 (30.Rfc1 Nd7 31.Qd8 Rd8+–) 30...c5 31.Qf4 (31.Rfb1 Rb6+–) 31...Rb3 32.Qe5 (32.Rab1 Rb6+–) 32...Qb6 (32...c4 33.Rfb1 Qb6 34.Rd1+–) 33.Rfd1 Kh7 (33...Kf7 34.c4 dc4 35.Rd6 Rb1 36.Rb1 Qb1 37.Kh2+–) 34.Qf5 Kh8 35.Qe5 Rb2?? 36.g4+– d4 37.g5 Ng8 38.h4 de3 39.fe3 c4 Threatening mate... how? 40.Qf4 Qb3 41.Rac1 Qb6 42.Qe4 Re2 43.Qd4 Qc6 44.Qd5 Qc8?? 45.Qf3+– Ra2 46.Rd4 Qb8 47.Rf4 Qb2 48.Qh5 Nh6 49.Rf8 Kh7 50.g6 1–0. Steve20 – khani9, ChessWorld.net, 2007.

6.0-0 Be6 7.Be6 fe6 8.d4 ed4 9.Bd4 Nc6 (9...e5 10.Bb2 a5=+) 10.Bb2 (10.b5 Nd4 11.ed4 Qd7=) 10...e5 (better 10...Nb4!? 11.c4 Qd7-/+) 11.b5= Nb8 12.Ng5 Qc8 13.Nd2 (13.f4!? h6 14.fe5 de5 15.Nf3=) 13...Qf5=+ 14.Ndf3? (14.Nde4 c6 15.Qd3 Ne4 16.Ne4 d5=+) 14...h6 (14...e4 15.Nd4 Qg5 16.Ne6 Qb5 17.Rb1-+) 15.e4 (15.Nh3!?=+) 15...Kh8?? (better 15...Qd7 16.Nh3 g5-+) 16.ef5+- (16.ef5 hg5 17.Ng5+-) 1-0. GembongWahyu (2040) - Arifars17 (2560), HBD ISTRI PERTAMA NHS Arena, lichess.org, 2020.

6.0-0 Be6 7.Be6= fe6 8.c4 Qd7=.

6.0-0 h6 7.d3 a6 8.e4 b5 9.Bb3 Bb7 10.a3 Nbd7 11.Nbd2 Rc8 12.c4 c5 13.cb5 ab5 14.bc5 (14.a4 ba4 15.Ba4 cb4=+) 14...Nc5 (< 14...Rc5 15.Re1+=) 15.Bc2 Na4 ( 15...Qc7!? 16.Rc1 Qd7=) 16.Ba4+/- ba4 17.Qa4 Bc6 18.Qd1 Qb6 19.Nc4 Qa6 20.Rb1 (20.Nfd2 Ba4 21.Qe2 Qa7+/-) 20...Bb5 ( 20...Ne4!? 21.de4 Qc4=+) 21.Nfd2+/- d5 ( 21...Ba4!? 22.Qf3 Rc7+/-) 22.ed5+– Nd5 23.Re1 f6+= 24.Qg4 Nf4 25.Qf3 Rfd8–/+ 26.Re3 Bc5 27.d4 ed4 28.Ree1 Nd5 29.Rbc1=+ Nc3 30.Bc3+/- dc3 31.Qc3 Bc4 32.Nc4 Ba3? 33.Ra1?? Qc4 34.Qc4 Rc4=+ 35.Ra3 Rc2 36.Rae3 Rdd2 37.h3 Rf2-+ 38.Kh1? Rg2 39.Re8 Kf7 40.R8e7 Kg6 41.Rg1 Rg1 42.Kg1 f5 43.Re6 Kg5 44.Re3 g6 45.Re1 f4 46.Rf1 Kf5 (47.Rf3 Ke4-+) 0–1. eds – topolov, Live Game Caissa's Web, 2004.

6.a3 e4 7.Nd4 c5 8.bc5 dc5 –/+.

6.a3 Bf5 7.0-0= Nbd7 8.Ng5 (8.d3 Nb6=) 8...Bg6 (8...d5 9.Be2+=) 9.d4= e4 10.Nd2 (10.d5 Nb6 11.Qd4 h6-+ (11...Nc4?! 12.Qc4 c6 13.dc6=)) 10...d5 11.Be2 h6 12.Nh3 Bd6 (12...Bf5 13.Nf4+=) 13.c4= c6 14.Rc1 (14.c5 Bc7+=) 14...Qe7 (14...Qc7 15.g3+=) 15.Nf4 (15.c5 Bc7=) 15...Bf4+= 16.ef4 Rac8 (16...Qd6 17.g3+=) 17.Qb3 (17.c5 e3 18.fe3 Qe3 19.Rf2 Rfe8=) 17...Rfe8 (17...dc4 18.Bc4 (worse is 18.Qc4 e3 19.Nf3 ef2 20.Rf2 Ng4-+) 18...Nb6 19.Rfe1=) 18.Rfe1 Qd6 (18...dc4 19.Nc4 (worse is 19.Qc4 e3 20.Nf1 ef2 21.Kf2 Qd6–/+; worse is 19.Rc4 Nd5–/+) 19...Nd5 20.Qg3=) 19.Qe3 Bf5 (19...Nf8 20.c5 Qc7 21.g4+=) 20.h3 (20.c5 Qe6+=) 20...h5 (20...dc4!? 21.Nc4 Qc7=) 21.c5+/- Qe6 22.f3 (22.Nb3 Re7+=) 22...Nf8 (22...h4 23.b5=) 23.Rcd1 (23.fe4 Be4 24.Ne4 de4=) 23...h4= 24.fe4 (24.Kh2 Ng6=) 24...Ne4 (24...de4 25.Nc4 Nd5 26.Qf2+=) 25.Ne4 Be4 26.Bg4 f5 27.Bh5 (27.Be2 Qh6 28.Qf2 Ng6=) 27...g6 28.Be2 Nh7 (better is 28...Bc2!? 29.Qe6 Ne6=) 29.b5 (better is 29.Qb3+=) 29...Nf6? (better is 29...Bc2!? 30.Qe6 Re6=) 30.Qf2+– Re7 31.Qh4 Rh7 32.Qg5 Rg7 33.g4?? Nh7 34.Qh4+= Qf6 35.g5+– Qe7 36.a4 Nf8+/- 37.Qg3 Ne6 38.h4 Qc7 39.Rf1+= Rh7 40.Rf2 Ng7 41.Rdf1 Nh5 42.Qh2 Kf7 43.bc6 bc6= 44.Bh5 gh5 ½–½. Wall,Bill – Nadan, chess.com, 2010.

6.Bb3 Be6 7.d3 Bb3 8.ab3 c6 9.0-0 Nbd7 10.Nbd2 Nd5 11.c3 f5 12.e4 fe4 13.Ne4 N7f6 14.Nfd2 Qe8 15.Nf6 Nf6 16.c4 Qg6 17.Qe2 Rae8 (better is 17...Nh5 18.Qe4 Nf4 19.Qg6 hg6–/+) 18.Ra7+= Nh5 19.g3 (19.Qe4!? Nf4 20.Qg6 hg6 21.b5+/-) 19...Nf4= 20.Qe4 Qh5?? (20...Nd3 21.Qg6 hg6 22.Ba3=) 21.Kh1?? (21.gf4 Rf4 22.Qe3=) 21...d5= 22.Qf3? Qf3–/+ 23.Nf3 Nd3 24.Be5?? Rf3-+ 25.Ba1 Bf6 26.Bf6 Rf6 27.Rb7 Nf2 28.Kg2 Re2 29.Rb8 Kf7 30.Rb7 Kg6 31.h4 h5 32.cd5 cd5 33.Rb5 d4 34.Rd5 d3 35.b5 d2 36.b6 Nd3 37.Kg1 Rf1 38.Kf1 Re1 0–1. an27 (1750) – juzekbond (1615), playok.com, 2012.

6.b5 a6+= 7.0-0 A) 7...Bg4 8.ba6 (8.h3 Bh5 9.ba6 Na6 10.Be2 c6 11.a4+=) 8...Na6 9.h3 Bh5 A1) 10.Nc3 c6 (10...Re8+= 11.Be2+=) 11.Be2+=; A2) 10.Be2 Re8 11.Nc3+=; B) 7...e4 8.Nd4 ab5 9.Bb5 c5 10.Nb3 d5 11.f3+=; C) 7...d5 8.Be2 e4 9.Nd4 ab5 10.Nb5 c6 11.Nd4+=; D) 7...ab5 8.Bb5 c6 (8...Bg4 9.h3 Bf5 10.Be2 Nc6 11.Nc3+=) 9.Be2 b5 10.c4 (10.d3 Nbd7 11.c4+=) 10...bc4+= 11.Bc4+=.

6.b5 a6+= 7.a4 A) 7...ab5 8.ab5 Ra1 9.Ba1 A1) 9...Re8 10.Be2 c5+= (10...e4 11.Nd4=) 11.0-0+=; A2) 9...e4 10.Nd4 c5 11.bc6+=; B) 7...d5 8.Be2 e4 9.Ne5 Bd6 10.0-0 ab5+= (10...Re8 11.f4+=) 11.ab5+=; C) 7...Bg4 C1) 8.h3 Bh5 9.Be2 C11) 9...Nbd7 10.0-0 c6= (10...e4 11.Nd4=) 11.Nc3+=; C12) 9...e4 10.Nd4 Be2 11.Qe2+=; C2) 8.Be2 ab5 9.ab5 Ra1 10.Ba1 Qd7 11.Nc3=; D) 7...c5 8.d3 (8.bc6 Nc6 9.0-0 Bg4 10.h3 Bf5 11.d4+=; 8.0-0 e4 9.Ne1 d5 10.Be2 Bd6 11.f3+=) 8...Bg4 9.e4 Nbd7 10.h3 Bh5= 11.g4=; E) 7...e4 8.Nd4 d5 9.Be2 c5 (9...ab5 10.ab5 Ra1 11.Ba1+=) 10.bc6 bc6+= 11.0-0+=.

6.b5 a6+= 7.ba6 Na6 8.0-0 (8.d3 Nc5 9.0-0 c6 10.Nbd2 b5 11.Bb3–/+) 8...e4 9.Nd4 c5 (9...d5 10.Be2 c5+= 11.Nb5+=) 10.Nb5 Bg4 11.Be2 +=.

6.b5 c5 7.d3 (7.0-0 e4 8.Ne1 d5 9.Be2 a6 10.a4 Bd6 11.f3+=; 7.bc6 Nc6 8.0-0 d5 9.Bb3 Qc7 10.Nc3 Rd8 11.Rb1+=) 7...a6 8.a4 (8.0-0 d5 9.Bb3 ab5 10.a3 e4 11.Ne5-+; 8.e4 ab5 9.Bb5 Qa5 10.Nc3 d5 11.Nd2–/+) 8...Bg4 9.e4 Nbd7 (9...ab5 10.ab5 Ra1= 11.Ba1=) 10.h3 ab5 11.ab5=.

6.b5 e4 7.Nd4 a6 (7...d5 8.Be2 a6 9.a4 ab5 10.ab5 Ra1+= 11.Ba1+=) 8.a4 (8.0-0 d5 9.Be2 ab5 10.Nb5 c6+= 11.Nd4+=; 8.ba6 Na6 9.0-0 c5 10.Nb3 d5 11.Be2+=; 8.Be2 ab5 9.Nb5 c6 10.Nd4 Qb6 11.Nb3+=) 8...d5 9.Be2 c5 10.bc6 bc6 11.0-0+=.

6.b5 Bg4 7.h3 A) 7...Bh5 8.Be2 (8.d3 c6 9.bc6 Nc6 10.g4 Bg6 11.Nbd2+=) 8...c6 (8...a6 9.a4 e4 10.Nd4 Be2 11.Qe2+=) 9.bc6 Bf3 10.Bf3 Nc6+= 11.Nc3+=; B) 7...Bf5 8.0-0 (8.d3 a6 9.ba6 Na6 10.e4 Bd7 11.0-0+=) 8...c6 9.a4 Nbd7 10.Nh4 Be6+= 11.Be6+=.

6.Nc3 d5 7.Bb3 (7.Be2 e4 8.Ne5 Bb4 9.a3 Bd6 10.f4 a6–/+; 7.Bb5 a6 (7...e4 8.Ne5 Bb4 9.0-0 Qe7 10.f4 Nbd7–/+) 8.Be2 e4 9.Ne5 Bb4 10.0-0 Be6–/+) 7...Re8 (7...e4!? 8.Ne5 Bb4–/+ 9.0-0 c6 10.Ne2 Re8–/+) 8.b5 (8.Ne5 Bb4 9.Nd3 Bc3 10.Bc3 Ne4+=) 8...c6 (8...e4 9.Nd4+= a6 10.a4 c5+=; 8...Qd6 9.0-0 Bg4 10.h3 Bd7+=) 9.bc6 (better is 9.Ne5!? a6 10.a4 (10.bc6 Nc6 11.Ne2+=) 10...c5+=) 9...Nc6+= 10.d4 (10.0-0 Bb4+=) 10...e4 11.Nd2 Bf8 12.0-0 Ng4 (better is 12...Bb4!?+=) 13.Bd5 Bd6 (13...Qh4!? 14.h3 Nf6+=) 14.h3+/- (14.Nde4? Bh2 15.Kh1 Qh4-+; 14.Be4?! Bh2 15.Kh1 Qh4=) 14...Nf6 15.Be4 h6 (15...Bc7 16.Qf3+/-) 16.Qf3+– Nh7 (16...Rb8 17.Rfd1+–) 17.Bc6 (17.Bh7 Kh7 18.Qf7 Re7+–) 17...bc6 (17...Ng5 18.Qd5 Be6 19.Qb5 bc6 20.Qc6 Bh3 21.Nc4+–) 18.Qc6 Be6 19.Nde4 Rc8?? (19...Bb4+–) 20.Qd6 1–0. TriAngel – Ugvar, ICC, 1999.

6.Nc3 e4 7.Nd4 d5 8.Be2 Bb4 9.0-0 c5 10.Nb3 c4 –/+.

6.d3 d5–/+ 7.Bb3 Bb4 8.Nbd2 e4 9.Nd4 c5 10.Ne2 Be6 11.Nf4 ed3 12.Nd3? (better is 12.cd3 c4 13.dc4-+) 12...Bd2-+ 13.Qd2 c4 14.Nc5 cb3 15.cb3 Qe7 16.Ba3 (16.Rc1-+) 16...b6 (better is 16...Rc8 17.Qb4 b6-+) 17.Ne6 Qe6 18.Bf8 Kf8 19.Rc1 Nc6 20.0-0 Rd8 21.Qc2 Rd6 22.Rfe1 Qe4 23.Qb2 a5 24.a3 Ng4 25.f3 Qe5 26.Qb1?? (better is 26.Qe5 Nge5 27.Rc3-+) 26…Qh2 (26...Qh2 27.Kf1 Qh1 28.Ke2 Qg2 29.Kd3 Nce5 30.Kc3 d4 31.ed4 Rc6) 0–1. Carbone,Gerardo – Martinez,Marcos (2220), Prix Metropolitano 6th, 1999. (=1.Nf3 Nf6 2.b4 d6 3.Bb2 e5 4.e3 Be7 5.Bc4 0-0)

6.Ng5 d5 7.Be2–/+.

6.Ng5 Bf5 7.e4 (7.Qf3 Bd7+=) 7...Ne4 (7...Bg6 8.0-0 h6 9.Nf3 Be4 10.d3–/+) 8.Ne4 (8.Nf7 Rf7 9.Bf7 Kf7–/+) 8...Be4 9.0-0 Nd7 (9...d5 10.Bb3–/+) 10.f4 (10.Nc3 Bg6–/+) 10...Bf6 (10...c6 11.d3 Qb6 12.Kh1 Bd5 13.Bd5 cd5–/+) 11.Qg4 (11.Nc3!? ef4 12.d4–/+) 11...Bc2 (better is 11...ef4 12.d4 Bc2-+) 12.Rf3? (12.Na3 Ba4-+) 12...Qe7 (better is 12...d5!? 13.Be2 e4 14.Rc3 Bb1 15.Rb1 Bc3 16.dc3-+) 13.Na3 (13.Nc3 e4 14.Rg3 Nb6-+) 13...Be4 14.Rg3 (14.Rb3 ef4 15.Qf4-+) 14...Bg6?? (better is 14...d5 15.fe5 Ne5-+ (15...dc4?? 16.ef6 Qf6 17.Bf6+–; 15...Be5?! 16.Qg7 Bg7 17.Rg7 Kh8 18.Rf7 Qe5 19.Rf8 Rf8 20.Be5 Ne5 21.Be2+=)) 15.f5+= Bh4 (better is 15...e4 16.Bc3 Bc3 17.dc3 Nf6+=) 16.fg6+/- Do you see the mate threat? 16...Bg3 17.Qg3 (17.Bf7 Kh8 18.Qg3 c6+=) 17...h6?? (better is 17...hg6 18.d4 c6+=) 18.Nb5 (better is 18.gf7 Kh8 19.d4+/-) 18...Qg5?? (better is 18...Nf6 19.Bf7 Kh8+/-) 19.gf7+– Kh8 20.Qd3 (20.Qg5 hg5 21.Be6 Rad8+–) 20...Nf6? (better is 20...Qd8+/-) 21.Nc7+– Rac8 (21...d5 22.Bb3 e4+–) 22.Ne6 (22.Ne6 Qg4 23.Nf8 Rf8 24.Qd6+–). Holsapple,Boyd – Wall,Bill, Dayton, OH, 1982.

5.Bc4 e4

6.Nd4 d5 7.Bb5 c6 8.Be2 Bb4 9.0-0 Bd6 10.Nc3 0-0 –/+ (10...b5–/+).

6.Nd4 d5 7.Be2 Bb4 8.f3 0-0 9.0-0 a6 10.c4 ef3 –/+.

6.Bf6 gf6 7.Nd4 d5 8.Bb3 Bb4 9.Qh5 c6 10.c4 dc4 =+.

6.Bf6 Bf6 7.Nd4 c5 8.Qh5 Qe7 9.Bb5 Kf8 10.bc5-+ dc5– +.

5.d3 0-0

6.Nc3 a6 A) 7.a3 Nc6 8.d4 (8.Be2 d5 9.0-0 d4 10.Ne4 h6 11.c4 dc3 12.Bc3 Qd5 13.Qc2) 8...ed4 9.Nd4 Ne5 10.Be2 c5 11.Nf3 Be6 12.bc5 Qc7 13.0-0; B) 7.Be2+= B1) 7...Bf5 8.a3 (8.e4 Bg6 9.Qd2 Nc6 10.Nd5 h6 11.0-0 Qd7 12.a4 Nd5 13.ed5; 8.0-0 Nc6 9.e4 Bg6 10.a3 d5 11.Nh4 d4 12.Nb1 b5 13.Nd2) 8...Nc6 9.0-0 d5 10.e4 Be6 11.Ng5 Nd4 12.ed5 Nd5 13.Ne6; B2) 7...h6 8.a3 (8.0-0 Nc6 9.a3 Re8 10.Qd2 Be6 11.d4 ed4 12.Nd4 Nd4 13.Qd4) 8...Nc6 9.0-0 Be6 10.d4 ed4 11.Nd4 Nd4 12.Qd4 d5 13.g3; B3) 7...Re8 8.Qd2 (8.a3 Nc6 9.0-0 h6 10.Qd2 d5 11.d4 ed4 12.Nd4 Bd6 13.Nf3; 8.0-0 Nc6 9.a3 h6 10.Re1 Be6 11.d4 ed4 12.Nd4 Nd4 13.Qd4; 8.h3 Nc6 9.a3 d5 10.0-0 d4 11.Ne4 h6 12.Ned2 de3 13.fe3) 8...Nc6 9.a3 d5 10.0-0 d4 11.Ne4 h6 12.Rae1 Bf5 13.Nc5; B4) 7...Nc6 8.a3 d5 9.0-0 d4 10.ed4 ed4 11.Ne4 Re8 12.Ned2 Nd5 13.Nd4.

6.Nc3 Na6 7.b5 A) 7...Nb4 8.e4 (8.a3 Nbd5 9.Nd5 Nd5 10.c4 Nf6 11.Be2 a6 12.a4 Bf5 13.0-0) 8...d5 9.a3 Qd6 10.ab4 Qb4 11.Qc1 d4 12.Be2 Bd6 13.Ra4; B) 7...Nc5 8.d4 (8.Be2 a6 9.d4 ed4 10.ed4 Nce4 11.ba6 ba6 12.Rb1 Re8 13.0-0) 8...ed4 9.Nd4 h6 10.Be2 d5 11.0-0 Qd6 12.Bf3 Rd8 13.Qe2.

6.Nc3 c6 7.a3 A) 7...Qb6 8.Be2 (8.Qd2 Na6 9.Be2 Bd7 10.0-0 c5 11.b5 Nc7 12.a4 a5 13.h3; 8.Na4 Qc7 9.Be2 h6 10.0-0 Be6 11.c4 Nbd7 12.Qc2 a5 13.h3) 8...h6 9.0-0 Be6 10.h3 Nbd7 11.Qd2 Rfe8 12.Na4 Qc7 13.c4; B) 7...Qc7 8.Be2 (8.h3 h6 9.Be2 Be6 10.Ne4 Ne4 11.de4 Nd7 12.c4 a5 13.0-0) 8...h6 9.0-0 Be6 10.Ne4 Nbd7 11.c4 a5 12.Qc2 Ne4 13.de4; C) 7...Nbd7 8.Be2 d5 9.0-0 Qc7 10.h3 a5 11.b5 Nc5 12.Rb1 Re8 13.bc6; D) 7...Be6 8.d4 (8.Be2 h6 9.0-0 Nbd7 10.Qd2 Qc7 11.h3 d5 12.Na4 b6 13.Qc3; 8.Ng5 Bd7 9.Nge4 a5 10.Nf6 Bf6 11.Ne4 Be7 12.d4 f5 13.Nd6; 8.g3 h6 9.Be2 Nbd7 10.0-0 Qc7 11.Ne4 Ne4 12.de4 Nb6 13.Qc1) 8...Nbd7 9.Bd3 h6 10.0-0 a5 11.Qd2 Qb6 12.b5 cb5 13.Bb5; E) 7...a5 8.Be2 ab4 9.ab4 Ra1 10.Qa1 Na6 11.Qa5 Qa5 12.ba5 Bd8 13.d4; F) 7...Na6 8.Be2 c5 9.bc5 Nc5 10.d4 ed4 11.Nd4 Be6 12.0-0 d5 13.Ne6; G) 7...h6 8.g3 (8.Be2 Be6 9.0-0 Nbd7 10.Qd2 Qc7 11.h3 d5 12.Na4 b6 13.Qc3; 8.h3 Be6 9.Be2 Nbd7 10.0-0 d5 11.Qd2 Qc7 12.Na4 b6 13.Qc3) 8...a5 9.Bg2 Bg4 10.0-0 ab4 11.ab4 Na6 12.b5 Qb6 13.ba6.

6.Nc3 c6 7.Be2= Qb6 8.a3 h6 9.h3 Be6 10.0-0 Nbd7 11.Qd2 a5 12.Na4 Qc7 13.c4.

6.Nc3 c6 7.Be2= Nbd7 8.0-0 (8.a3 d5 9.0-0 Qc7 10.h3 a5 11.b5 Nc5 12.Rb1 Re8 13.bc6) 8...d5 9.b5 (9.a3 Qc7= 10.h3 a5 11.b5 Nc5 12.Rb1 Bf5 13.bc6) 9...Bd6 (9...cb5 10.Nb5 a6 (10...Qb6 11.a4 a6 12.Ba3 Ba3 13.Na3) 11.Nc3+= Qc7 12.a4 b6 13.h3; 9...h6 10.h3 Qc7 11.a4 Nc5 12.Ba3 Re8 13.bc6) 10.Rb1 (10.h3 Rb8 11.Qd2 Nc5 12.Ba3 Re8 13.bc6) 10...Re8 (10...Rb8 11.h3 Qc7 12.Ba1 Nc5 13.bc6) 11.Qd2 (11.h3 Rb8 12.Ba1 c5 13.Bb2) 11...Bb4 (11...Rb8 12.Ba1 Nc5 13.bc6) 12.a3 Ba5 (12...Bd6 13.d4) 13.Qd1 (13.Qc1 Rb8=; 13.bc6=) 13...c5 14.h3 (14.Nd2 a6+=) 14...d4+= 15.Ne4 Nd5 (15...Ne4 16.de4 Nb6 17.Nd2+=) 16.Qc1 f5 17.Nd6 Rf8 18.Nc4 (18.g3 Qf6 19.Nc8 Rac8+=) 18...Bc7+= 19.ed4 cd4 20.c3 Nf4 21.Qc2 Qe7 (worse is 21...Ne2 22.Qe2 e4 23.de4+/-) 22.Rbe1 Nc5 (22...dc3!? 23.Bc3 Qf6+=) 23.Nce5+/- Be5 (23...dc3 24.Bc3 Bd6 25.Nc4+/-) 24.cd4 Ne2?? (better is 24...Bd4 25.Bd4 Nce6+–) 25.Re2+– Nd7 (25...Be6 26.Ne5 (26.Re5?! Nd7+–; 26.de5?! Rac8+–; 26.Qc5?! Bd6 27.Qc2 Qd7+/-) 26...Nd7 27.Rfe1+–) 26.de5 (worse is 26.Ne5 Ne5 27.Re5 Qf7+–) 26...Nc5 (26...Re8 27.e6 Nf8 28.d4+–) 27.d4 Ne4 28.Qb3 Kh8 (28...Be6 29.d5 Bf7 30.Nd4+–) 29.d5 Bd7 (29...b6 30.Rc1+–) 30.e6 Be8 31.Rc1 Bh5 (31...b6 32.Be5 Nc5 33.Qc4+–) 32.Rec2 Bf3 (32...Rg8 33.Rc7 Qf8 34.e7+–) 33.Rc7 Qg5 (33...Qh4 34.Bg7 (34.gf3?? Qf2 35.Kh1 Ng3) 34...Kg8 35.Qf3+– (worse is 35.gf3 Qf2 36.Kh1 Ng3)) 34.Bg7 Kg8 35.Qf3 (35.Qf3 h5 36.Bf8 Rf8 37.e7+–) 1–0. mrkt – egill, internet, 2011.

6.Nc3 c6 7.Be2= Be6 8.Ng5 (8.d4 Qb6 9.0-0 Qb4 10.Rb1 Qa5 11.e4 b6 12.h3 Nbd7 13.Qd2) 8...Bd7 9.0-0 a5 10.b5 cb5 11.d4 ed4 12.Qd4 h6 13.Nf3.

6.Nc3 c6 7.Be2= h6 8.0-0 (8.Qd2 Be6 9.0-0 Nbd7 10.Ne4 Qc7 11.c4 a5 12.a3 Ne4 13.de4; 8.a3 Be6 9.0-0 Nbd7 10.Qd2 d5 11.Na4 Qc7 12.h3 b6 13.Qc3; 8.h3 Qb6 9.a3 Be6 10.0-0 Nbd7 11.Qd2 Rfe8 12.Na4 Qc7 13.c4; 8.Rb1 Be6 9.0-0 Nbd7 10.Qd2 Qb6 11.Na4 Qc7 12.c4 d5 13.cd5; 8.e4 Be6 9.0-0 Qb6 10.d4 Nbd7 11.Rb1 Qb4 12.Ba1 Qa5 13.Rb7) 8...Be6 9.h3 Nbd7 10.Ne4 Qb6 11.Qd2 c5 12.c3 cb4 13.cb4.

6.Nc3 Nc6 7.b5 Na5 8.Be2 (8.a4 Be6 9.Be2 h6 10.0-0 c6 11.Qd2 Qc7 12.h3 a6 13.Ba3; 8.Qd2 Be6 9.Be2 h6 10.a4 c6 11.0-0 a6 12.h3 Qc7 13.Ba3; 8.g3 Bd7 9.a4 a6 10.Bg2 Qe8 11.Rb1 h6 12.0-0 Be6 13.Qd2; 8.h3 Bd7 9.Be2 a6 10.a4 c6 11.bc6 Nc6 12.0-0 h6 13.Qd2) 8...Be6 9.Ng5 Bf5 10.0-0 h6 11.Nge4 Qd7 12.Qd2 Be6 13.a4.

6.Nc3 Be6 A) 7.a3 a5 8.b5 Nbd7 9.Be2 h6 10.0-0 c6 11.Qd2 Qc7 12.h3 d5 13.a4; B) 7.Be2 B1) 7...Nbd7 8.0-0 (8.h3 d5 9.a3 h6 10.0-0 c6 11.Qd2 Qc7 12.Na4 b6 13.Rfb1; 8.a3 d5 9.0-0 h6 10.Qd2 c6 11.Na4 Qc7 12.Rab1 b6 13.Bc3; 8.Qd2 d5 9.a3 a5 10.b5 h6 11.0-0 c5 12.bc6 bc6 13.d4; 8.Ng5 d5 9.a3 a5 10.b5 Bf5 11.e4 de4 12.de4 Bg6 13.0-0; 8.d4 c6 9.0-0 Qb6 10.Ba3 h6 11.Qd3 ed4 12.Qd4 d5 13.Qf4; 8.Rb1 d5 9.b5 Bd6 10.0-0 h6 11.h3 Qe7 12.Ra1 a6 13.a4; 8.a4 d5 9.b5 c5 10.bc6 bc6 11.0-0 Rb8 12.Ba3 h6 13.Qc1) 8...d5 9.Rb1 Bb4 10.Na4 Bd6 11.d4 e4 12.Ne5 Rb8 13.Bc3; B2) 7...h6 8.0-0 (8.Qd2 a5 9.b5 a4 10.a3 Nbd7 11.0-0 Qb8 12.Rfe1 d5 13.Na2) 8...Nbd7 9.Qd2 c6 10.Ne4 Qb6 11.c4 a5 12.a3 Ne4 13.de4; C) 7.d4 C1) 7...a5 8.b5 Nbd7 9.Bd3 ed4 10.ed4 Nb6 11.Ng5 Bd7 12.0-0 h6 13.Nf3; C2) 7...c6 8.Bd3 (8.a3 Nbd7 9.Bd3 h6 10.0-0 a5 11.h3 Qb6 12.b5 c5 13.Qe2; 8.Be2 Nbd7 9.0-0 Qb6 10.Ba3 h6 11.Qd3 Nd5 12.Na4 Qc7 13.c4; 8.Ng5 Nbd7 9.Be2 Bf5 10.0-0 h6 11.Nf3 Qb6 12.a3 a5 13.b5) 8...Nbd7 9.0-0 Qb6 10.Ng5 Qb4 11.Rb1 Nb6 12.Ne6 fe6 13.Qe2; C3) 7...e4 8.d5 ef3 9.de6 fe6 10.Qf3 Nc6 11.b5 Nb4 12.0-0-0 c6 13.Qh3; C4) 7...Na6 8.a3 (8.b5 Nb4 9.a3 e4 10.ab4 ef3 11.d5 fg2 12.Bg2 Bf5 13.0-0) 8...ed4 9.Nd4 Bd7 10.Bc4 c5 11.bc5 Nc5 12.0-0 Be6 13.Ne6; C5) 7...h6 8.b5 (8.Qd2 a5 9.b5 e4 10.d5 Bc8 11.Nd4 Nbd7 12.Be2 Nb6 13.0-0; 8.d5 Bf5 9.Bd3 e4 10.Nd4 Bg6 11.Be2 a5 12.a3 Na6 13.b5) 8...Nbd7 9.Bd3 d5 10.de5 Ng4 11.Ne2 Bb4 12.Kf1 f6 13.Nf4; C6) 7...ed4 8.Nd4 d5 9.b5 a6 10.Bd3 ab5 11.Ncb5 Nc6 12.0-0 Qd7 13.f3; C7) 7...a6 8.Be2 (8.d5 Bc8 9.Bc4 a5 10.ba5 Ra5 11.0-0 Nbd7 12.Qd2 Nc5 13.a4; 8.a3 ed4 9.Nd4 d5 10.Bd3 c5 11.Ne6 fe6 12.bc5 Bc5 13.0-0) 8...ed4 9.Nd4 d5 10.a3 c5 11.Ne6 fe6 12.0-0 cb4 13.ab4; C8) 7...Nbd7 8.Bd3 (8.Be2 a5 9.b5 h6 10.e4 c6 11.0-0 Qc7 12.Ba3 Rae8 13.Qd2; 8.a3 e4 9.d5 Bg4 10.h3 Bh5 11.g4 Bg6 12.Nh4 Ne5 13.Be2) 8...d5 9.de5 Ng4 10.0-0 Nde5 11.Ne5 Ne5 12.Bh7 Kh7 13.Qh5.

6.c4 b6 7.Be2 Bb7 8.Nbd2 Re8 9.0-0 Nbd7 10.Qc2 Bf8 11.a3 Rc8 12.Rac1 c5 13.e4 h6 14.Qb3 Nh7 15.Rfe1 Ng5 16.h3 Nf3 17.Nf3 Qf6 18.Qa4 Rc7 19.Qa7?? (better is 19.b5=) 19...Ra8-+ (19...Ra8 20.Qa8 Ba8-+) 0–1. Lizak,Jakub – Bogacki,Henryk, VII Marek Piasta Mem Tarnowskie Gory Poland, 2009.

6.Nbd2 Nbd7 7.a3 Nb6 8.c4 Bf5 9.e4 Be6 10.Be2 Nbd7 (10...Qe8 11.Rb1=) 11.0-0 a5 (11...c5 12.Ng5=) 12.Qc2 c6 13.Rfc1 Ng4 14.h3 Ngf6 15.Ng5 Qb6 16.Ne6 fe6 17.Bc3 ab4 18.ab4 Ra1 19.Ra1 (worse is 19.Ba1 Qb4 20.d4 ed4 21.Bd4 e5+=) 19...Ne8 20.Nf3 Nc7 21.Qb2 Na6 22.d4 ed4 23.Bd4 Qb4 24.Bg7 Qb2 25.Bb2 Bf6 26.Bf6 Nf6 (better is 26...Rf6 27.Rd1 e5=) 27.Rd1?? (better is 27.e5 Ne4 28.ed6+=) 27...Ne4–/+ 28.Rd4 Nac5 29.Kf1 (29.Bd3 d5-+) 29...d5 (29...Ra8 30.h4-+) 30.cd5 ed5 31.Bd1 Ra8 32.Bc2 Ra1 33.Ne1 Ra2 34.Kg1 Ra1 35.Kf1 b5 36.Ke2 Nc3 37.Kf1 N5e4 ½–½. Haisma,Henk (1650) – Dokter,Marike, Guernsey Holiday op, 2005.

6.Nbd2 Nbd7 7.c4 a5 8.a3 (8.b5 A) 8...Nc5 9.Ba3 (9.d4 ed4 10.Bd4 Bf5 11.Be2 Nd3 12.Bd3 Bd3 13.Qb3 Bf5 14.0-0 a4 15.Qb2=) 9...Nfd7 10.Be2 Bf6 11.Rb1 Re8 12.0-0 a4 13.Re1 Qe7 14.Qc2 Ne6 15.Ne4=; B) 8...a4 9.a3 (9.Be2 c6 10.0-0 cb5 11.cb5 a3 12.Bc3 Nd5 13.Rc1 Nc3 14.Rc3 Qa5 15.Qc2=) 9...Nc5 10.Be2 Bf5 11.e4 Bg6 12.0-0 Ne8 13.Bc3 Qd7 14.Qc2 f5 15.Rae1=; 8.ba5 A) 8...Nc5 9.Be2 (9.d4 ed4 10.ed4 Ne6 11.d5 Nf4 12.g3 Nh3 13.Qb3 Re8 14.Bd4 Ra5 15.Bg2=+) 9...Ra5 10.Nb3 Nb3 11.ab3 Ra1 12.Qa1 Re8 13.0-0 c6 14.Qa7 Qd7 15.Ra1=; B) 8...Ra5 9.Be2 (9.Bc3 Ra3 10.Qc1 Ra8 11.Be2 Nb6 12.0-0 Na4 13.Bb4 Re8 14.Qc2 c5 15.Ba3=) 9...Nb6 10.Qc2 Na4 11.Nb3 Ra6 12.Bc1 Bg4 13.h3 Bf5 14.e4 Bg6 15.Nh4=) 8…Re8 (8...c6 9.b5 (9.Be2 Re8 10.0-0 ab4 11.ab4 Ra1 12.Qa1 Qc7 13.Rc1 b6 14.d4 Bb7 15.Qb1=) 9...Qb6 10.Rb1 cb5 11.cb5 Re8 12.Nc4 Qb5 13.Be5 Qc5 14.d4 Qc6 15.Bf6+=) ½–½. Peixoto,Antonio (2115) – Fernando,Diogo (2365), 9th YM, Loures POR, 2001.

6.Be2 a6 7.0-0 Nc6 8.a3 Be6 (8...Qd7 9.Qd2=) 9.Nbd2 Qd7 (9...Bd7 10.c4=) 10.c4 Rfe8 (10...Bg4 11.h3 Bh5 12.Rb1=) 11.d4+= ed4 12.ed4 Bf5 (12...d5 13.Ne5 Qd8 14.Nc6 bc6 15.Re1+=) 13.d5 Na7 (13...Nd8 14.Nh4+=) 14.Nd4 Rad8 (14...c6 15.dc6 Nc6 16.Nf5 Qf5 17.Bf3+=) 15.N2b3 (15.Nf5 Qf5 16.Re1 c6+/-) 15...b6 (15...Bg6 16.Bd3+=) 16.Bd3 (16.Nf5 Qf5 17.Bd3 Qf4+/-) 16...Bd3+= 17.Qd3 Bf8 (17...Ng4 18.f4+=) 18.Rfe1+/- Re1 (18...Ng4 19.Qg3+/-) 19.Re1 Re8 20.Re3 (20.Re8 Qe8 21.Nf5 Ng4+/-) 20...Re3 (20...b5 21.Nf3 Be7 22.cb5 ab5 23.Ng5+/-) 21.Qe3 Qg4 22.h3 (22.f3 Qg6+/-) 22...Qg6 (22...Qd1 23.Kh2 Qb1 24.Ba1+/-) 23.Qe2 (23.Nd2 b5 24.N4f3 Nc8+/-) 23...h6 (23...Qb1 24.Kh2+=) 24.Nf3 (24.Nd2 Nd7+/-) 24...Qf5 (24...c6 25.dc6 Qb1 26.Kh2 Nc6 27.Nbd4+=) 25.Nbd4 (25.Nbd2 c5+/-) 25...Qg6 (25...Qb1 26.Kh2 Ne4 27.Nf5+=) 26.Nh4 (26.a4 Qb1 27.Kh2 Qa2+/-) 26...Qb1+= 27.Kh2 Nc8 (27...b5 28.Nc6 Nc6 29.Bf6+=) 28.Nc6 (28.Ne6 Qe4 29.Qe4 Ne4 30.Nc7 a5+/-) 28...Ne4 (28...Qe4 29.Qe4 Ne4 30.Nb8+=) 29.Nf5 (better is 29.f3 Qh1 30.Kh1 Ng3 31.Kh2 Ne2 32.g3+/-) 29...Nc3? (better is 29...g6 30.Ne3 Ne7+/-) 30.Nh6!+– (30.Bc3?! Qf5 31.Nb8 a5 32.ba5 Ne7 33.ab6 cb6+/-) 30...gh6 31.Bc3 Qf5 32.Qg4 (32.Nb8!? a5 33.ba5 Bg7 34.Bg7 Kg7+–) 32...Qg4 33.hg4 b5 34.cb5 (34.Nb8 bc4 35.Na6 Bg7+/-) 34...ab5 35.Kg3 (35.Bd4 Bg7+–) 35...Nb6+/- 36.Nd4 Nd5 37.Nb5?? (37.Bd2 c6 38.Nc6 Bg7+/-) 37...c5?? (better is 37...c6 38.Nd4 Nc3 39.Nc6 Bg7–/+) 38.bc5 (38.Kf3 Nb6+–) 38...dc5 39.a4 Be7 (39...Nc3!? 40.Nc3 Bg7+–) 40.a5 Bd8 (40...Kf8 41.a6 Nb6 42.a7+–) 41.a6 Bb6 (41...Nc7 42.a7 Na8 43.Kf4+–) 42.Be5 (42.Bd2 Kh7+–) 42...c4 43.a7 Ba7 44.Na7 c3 45.Bd6 (better is 45.Nc6+–) 45...c2+/- 46.Ba3 Nb4 47.Nb5 Na2 48.Nd4 c1Q 49.Bc1 Nc1 50.Kf4 Nd3 51.Ke3 Ne1?? (better is 51...Ne5 52.f3 Nc4 53.Ke4 Kg7+/-) 52.g3+– Kg7 53.Nf5 (53.Ke2!? Ng2+–) 53...Kg6? (53...Kh7 54.f4 Nc2 55.Ke4+–) 54.f4 (better is 54.Nh4 Kg5 55.Kd2+–) 54...Nc2+/- 55.Ke4 Nb4 (55...Ne1 56.Nd4 h5 57.gh5 Kh5 58.Kf5+–) 56.Ke5 (56.Kd4+–) 56...Nc6? (better is 56...Nd3 57.Kd5 Nf2+=) 57.Kd6+– Nd8 (57...Nb4 58.Ke7+–) 58.Ke7 Ne6 (58...Nc6 59.Ke8 Nb4 60.Nh6+–) 59.Nd6 Nd4 (59...Ng5 60.fg5 Kg5 61.Nf5 (61.Nf7?! Kg4 62.Nd6 Kg3=) 61...Kg4 62.Kf6+–) 60.Nf7 Ne2 (60...h5 61.Ne5 Kh7 62.gh5 Nf5 63.Kf7 Ng3+–) 61.Ne5 (better is 61.f5 Kh7 62.g5+–) 61...Kg7 (61...Kh7+–) 62.f5 Ng3 63.f6 Kh8 (63...Kg8 64.f7 Kg7 65.f8Q Kh7 66.Qf7 Kh8 67.Ng6) 64.f7 Kh7 (64...Nf5 65.gf5 Kh7 66.Nd7 h5 67.f8Q h4 68.Nf6) 65.f8Q Nf5 66.gf5 h5 67.Qf7 Kh8 (67...Kh6 68.Qg6) 68.Ng6 1–0. Stojkovic,Lea – Vidovic,Petra, Trogir Croatia, ChampionshipU11, 2016.

6.Be2 a6 7.0-0 h6 8.c4 Be6 9.Nc3 Nbd7 10.d4 c6 11.Qc2 Rc8 12.Rfd1 Qc7 13.a4 b5 (13...a5!? 14.ba5 Qa5=) 14.ab5+/- cb5 15.d5 Bg4 16.Ra6 (16.cb5 ab5 17.Qd2 Nb6 18.Nb5 Qc2+/-) 16...bc4 17.Rc6 Qb7 18.b5 (18.Rc4?! Rc4 19.Bc4 Bf3 20.gf3 Qb4=) 18...Nc5 (18...Bf3 19.Bf3 Nb8 20.Rc8 Rc8 21.Ra1+=) 19.Ba3 Bd7? (better 19...e4!? 20.Bc5 ef3 21.gf3 Bd7+-) 20.Bc5+- dc5 The passed pawn on d5 quickly leads to threats 21.Rc8 Rc8 22.d6 Bf8 23.Ne5 Be6 24.Bc4 (24.Nc4?! Qb8+-) 24...Bc4 25.Nc4 Rd8 26.e4 Nh5 (26...Qd7 27.e5 Qe6 28.Na5 (28.ef6?! Qc4 29.d7 Qe6+-) 28...Qe5 29.Nc6+-) 27.g3 (27.e5 Rb8 28.b6 Qd7+-) 27...Nf6 28.b6 Ne8 (28...Nd7 29.Nd5+-) 29.e5 g6 30.Qe4 Qa6 31.b7 Ng7 32.Rb1 Rb8 33.Nd5 Ne6 (33...Qa4 34.Nf6 Kh8 35.Nd2+-) 34.Nf6 Kg7 35.Nd7 Nd4 (35...Re8 36.b8Q Rb8 37.Rb8 Qa1 38.Kg2+-) 36.Nb8 Qc4 37.Nd7 (37.Nd7 Bd6 38.ed6 Ne2 39.Qe2 Qe2 40.b8Q+-) 1-0. pcmvr – michelleke, net-chess.com, 2020.

6.Be2 Na6 7.a3= A) 7...Bd7 8.0-0 (8.Nbd2 c5 9.c3 Qc7 10.0-0 h6 11.h3 b5 12.Rc1 Rab8 13.e4; 8.c4 c5 9.b5 Nc7 10.Nc3 a6 11.a4 Ne6 12.0-0 Qc7 13.Qd2; 8.Nc3 c5 9.bc5 Nc5 10.0-0 Ne6 11.Qd2 Rc8 12.h3 Qa5 13.Rab1; 8.c3 Qe8 9.0-0 Ba4 10.Qe1 Bc6 11.c4 h6 12.Nc3 Rb8 13.e4) 8...c5 9.c3 Qc7 10.Nbd2 h6 11.e4 b5 12.h3 Rab8 13.Rc1; B) 7...h6 8.c4 (8.0-0 c5 9.c3 Be6 10.Nbd2 Qd7 11.h3 Qc6 12.e4 Rac8 13.Re1; 8.Nbd2 c5 9.c3 Be6 10.0-0 Qc7 11.b5 Nb8 12.c4 Nbd7 13.Qc2; 8.h3 c5 9.c3 Be6 10.Nbd2 Qd7 11.0-0 Rfe8 12.e4 Qc8 13.Rc1; 8.Nc3 c5 9.bc5 Nc5 10.d4 ed4 11.Nd4 Qa5 12.0-0 d5 13.Nb3; 8.c3 Be6 9.Nbd2 c5 10.h3 Qc7 11.0-0 b5 12.e4 Qb7 13.Re1) 8...c5 9.b5 Nc7 10.Nc3 a6 11.a4 Bf5 12.0-0 Qd7 13.e4; C) 7...c5 8.c3 b5 9.0-0 Bd7 10.Nbd2 Qc7 11.d4 h6 12.de5 de5 13.c4.

6.Be2 Na6 7.c3 A) 7...h6 8.Nbd2 (8.0-0 c5 9.a3 Qc7 10.Nbd2 Be6 11.h3 b5 12.Rc1 Qb7 13.Ne4; 8.h3 Be6 9.Nbd2 c5 10.a3 Qc7 11.0-0 b5 12.Rc1 Qb7 13.Ne4; 8.a3 Bd7 9.Nbd2 Bc6 10.0-0 Qd7 11.a4 Qe6 12.e4 Nb8 13.b5) 8...Be6 9.a3 c5 10.0-0 Qd7 11.h3 b5 12.Ne4 Qc6 13.Ng3; B) 7...Qe8 8.Nbd2 (8.0-0 c5 9.a3 h6 10.Nbd2 Be6 11.e4 b5 12.h3 Qb8 13.Rb1; 8.a3 Bf5 9.0-0 c5 10.Nbd2 h6 11.Qb3 b5 12.c4 Rb8 13.Bc3) 8...h6 9.a4 c5 10.b5 Nc7 11.0-0 Ncd5 12.Qb3 Be6 13.c4; C) 7...Qd7 8.Nbd2 (8.0-0 c5 9.a3 h6 10.Qb3 b5 11.Nbd2 Rb8 12.e4 Qb7 13.Qd1; 8.a4 c5 9.b5 Nc7 10.Nbd2 Ne6 11.0-0 Qc7 12.Qb3 d5 13.c4) 8...Qf5 9.0-0 Qg6 10.Qb3 Be6 11.c4 Bh3 12.Nh4 Qh6 13.Nhf3; D) 7...c5 8.a3 Qc7 9.Nbd2 Be6 10.0-0 h6 11.h3 Qc6 12.e4 Rac8 13.Re1; E) 7...Bg4 8.a3 (8.Nbd2 c5 9.a3 Qc7 10.0-0 h6 11.b5 Nb8 12.Qc2 Nbd7 13.c4; 8.0-0 h6 9.Nbd2 c5 10.h3 Bd7 11.a3 Rb8 12.e4 b5 13.d4; 8.h3 Be6 9.Nbd2 c5 10.a3 h6 11.0-0 Qc7 12.e4 Rac8 13.b5) 8...h6 9.0-0 Qd7 10.Nbd2 Nb8 11.Qc2 Nc6 12.h3 Bf5 13.e4; F) 7...Bf5 8.Nbd2 (8.0-0 c5 9.a3 b5 10.e4 Bd7 11.Nbd2 Qc7 12.Qb3 Qb7 13.Rfe1; 8.e4 Be6 9.0-0 c5 10.a3 Qb6 11.Ng5 Bd7 12.Nd2 h6 13.Nc4) 8...c5 9.a3 h6 10.0-0 Qc7 11.e4 Be6 12.h3 Rac8 13.b5; G) 7...Nd5 8.0-0 (8.Nbd2 f5 9.g3 Be6 10.e4 fe4 11.de4 Nb6 12.0-0 c6 13.a3) 8...Be6 9.a3 Nb6 10.Nbd2 f5 11.a4 Qe8 12.b5 Nc5 13.d4; H) 7...g6 8.Nbd2 (8.0-0 Bd7 9.Nbd2 c5 10.a3 b5 11.d4 ed4 12.ed4 Re8 13.Re1; 8.a3 Nb8 9.Nbd2 a6 10.0-0 Nc6 11.Qc2 Be6 12.c4 Qd7 13.h3; 8.h3 c5 9.a3 Bd7 10.Nbd2 Qc7 11.0-0 b5 12.Re1 Rac8 13.Rc1) 8...c5 9.a3 Bd7 10.0-0 b5 11.Qb3 Rb8 12.d4 Be6 13.Qc2; I) 7...Be6 8.Nbd2 (8.0-0 c5 9.a3 Qc7 10.b5 Nb8 11.c4 h6 12.Nc3 Nbd7 13.Qb3; 8.a3 Nb8 9.Nbd2 h6 10.0-0 Nc6 11.Qc2 a6 12.d4 ed4 13.cd4) 8...c5 9.a3 h6 10.0-0 b5 11.h3 Qc7 12.Rc1 Qc6 13.e4.

6.Be2 c6 7.0-0 a5 8.a3 Na6 (8...ab4 9.ab4 Ra1 10.Ba1=+) 9.Qd2 Bf5 10.e4 Bg4 11.c4 Nc7 12.Nc3 Ne6 13.h3 (13.b5 Nf4=) 13...Bf3=+ 14.Bf3 Nd4 15.Bd1 ab4 16.ab4 Ra1 17.Ba1 d5 18.ed5 cd5 (18...Bb4 19.f4 Re8 20.Qb2=+) 19.c5 (19.Ne2 Nf5 20.c5 Qc7+=) 19...b6 20.Na4 bc5 21.bc5 Nc6 22.Re1 d4 23.Bf3 Qc7 24.Rb1 (24.Qe2!?=) 24...Nd7 25.Qe1 Re8 (25...Rb8!?=+) 26.Rb5= g6 (26...Nf6 27.Bb2=) 27.Qb1 Nd8 Will c5 fall? 28.c6 (28.Qc2!?=) 28...Nc6-/+ 29.Rb7 Qd6 30.Qb5 Rc8 31.Bb2 Ncb8 32.g3 h5 (32...Kg7 33.Nb6 Rc5 34.Qb3-/+) 33.Kg2 Nf6 (better 33...Kg7=+) 34.Nb6+/- Rd8? (better 34...Rc5 35.Qa4 Qd8+-) 35.Nc4+- Qe6 (35...Qc5 36.Rb8 Qb5 37.Rb5+-) 36.Rb8 Kg7 (36...e4 37.de4 Ne4 38.Bd4 Rb8 39.Qb8 Bf8 40.Ne5+-) 37.Rd8 Bd8 38.Qe5 (38.Ne5 Ne8+-) 38...Qd7 (38...Qe5 39.Ne5 Bb6 40.Nc6+-) 39.Qd4 Qe8 (39...Qd4 40.Bd4 Kf8 41.Ne5+-) 40.Ne3 Kg8 (40...Qe7 41.g4+-) 41.Nd5 (41.Nd5 Qe6 42.Nf6 Bf6 43.Qf6 Qf6 44.Bf6+-) 1-0. Ccerhuayo Escobedo,Mels Leopold (2150) - Samadov,Read (2330), Gran Canaria Online Blitz, 2021.

6.Be2 Ng4 7.0-0 f5 8.Nbd2 f4 9.ef4 Rf4 10.a3 Qe8 11.Ne4 Qh5 (better is 11...Qg6!?=) 12.h3+/- Nh6 13.Nh2 (13.Ne5!? Qe8 14.Nf3+/-) 13...Qe8 14.Bc1 Rf8 15.Bh6 gh6 16.Bh5 Qd8 17.Ng4 Bg5 18.Ng5 (18.d4!? Bf5 19.Ng3 Bg4 20.Qg4+/-) 18...Qg5= 19.c4 Kh8 20.Ne3 Bh3 21.Bf3 Nd7 (better is 21...c6!?=) 22.Bb7+/- Rab8 23.Be4 Nf6 24.Bf3 Rg8 25.Kh2 Be6 26.g3 h5 27.Rg1 (27.Ng2!?=) 27...Ng4+= 28.Ng4?? (better is 28.Bg4 hg4 29.Rh1+=) 28...hg4-+ (28...Bg4?! 29.Ra2+=) 29.Be4 (29.Rh1 gf3 30.Qf3-+) 29...Qh5 0–1. Bopeep – bobby fissure, ChessWorld.net, 2012.

6.Be2 a5

7.b5= a4 8.Na3 (8.0-0 h6 9.Na3 Be6 10.h3 Nbd7 11.Nc4 a3 12.Bc3 Ra4 13.Rb1; 8.Nc3 a3 9.Bc1 Nbd7 10.0-0 Nc5 11.e4 Be6 12.h3 h6 13.Qe1) 8...Nbd7 9.0-0 Nb6 10.c4 Be6 11.Qc2 h6 12.e4 Nbd7 13.d4.

7.b5= c6 8.Na3 (8.Nc3 h6= 9.0-0 Be6 10.e4 Nbd7 11.bc6 bc6 12.d4 Rb8 13.Rb1) 8...Bg4 (8...Bd7 9.c4= (9.d4 e4 10.Nd2 Bf5 11.0-0 Nbd7 12.h3 Qc7 13.c4) 9...Bf5 10.e4 Be6 11.0-0 Nbd7 12.Ng5 Nc5 13.Ne6) 9.0-0 Qc7 (9...Nbd7 10.bc6 bc6 11.h3 Be6 12.Nc4 Nb6 13.Rb1) 10.h3 Bh5 (10...Be6 11.bc6 Nc6 12.c4 Qb6 13.Nb5) 11.bc6 bc6 12.Nh4 (12.Nc4 Nbd7 13.Rb1) 12...Bg6 (12...Be2 13.Qe2) 13.Nc4 Nbd7 14.Ba3 (14.d4 ed4 15.Ng6 hg6 16.ed4 d5=) 14...Rfe8 15.Qc1 d5 16.Be7 Re7 17.Qa3 Nf8 18.Ng6 Ng6 19.Nd2 Ree8 20.Rab1 Reb8 21.c4 Qe7 (21...h6 22.Rb8 Qb8 23.Rb1+=) 22.Rb8+= Rb8 23.Qa5 Nf8 24.Rb1 Rb1 25.Nb1 g6 26.Nd2 Qb7 27.Qc3 N8d7 (27...Qa7 28.Qe5 Qa2 29.Qc3+/-) 28.a4 Ne8 (28...dc4!? 29.Nc4 Qb1 30.Bf1 Nd5+–) 29.cd5+– cd5 30.a5 Nc7 31.Nf3 e4? (31...Kg7+–) 32.de4 de4 33.Nd2 f5 (33...Ne6+–) 34.Bc4 Kf8 35.Qh8 Ke7 36.Qh7 Kf6 (36...Kd8+–) 37.Qd7 Kg5 38.Qd8 Kh6 39.Qh8 Kg5 40.h4 Kg4 41.Be2 1–0. mrkt – tofik1506, internet, 2011.

7.b5= Nbd7 8.0-0 (8.Nc3 a4 9.a3 h6 10.0-0 d5 11.h3 Bd6 12.Qb1 Nb6 13.Qd1; 8.h3 Nb6 9.Nc3 a4 10.a3 Be6 11.0-0 h6 12.e4 Qd7 13.Qc1) 8...a4 9.a3 Nc5 10.Nc3 h6 11.h3 Bf5 12.d4 ed4 13.Nd4.

7.b5= Be6 8.h3 (8.0-0 h6 9.c4 Nbd7 10.Nc3 Nb6 11.Na4 c6 12.bc6 bc6 13.Rb1; 8.Nc3 h6 9.0-0 Nbd7 10.Rb1 a4 11.Ba3 d5 12.Bb4 Bd6 13.h3; 8.Qd2 Nbd7 9.Nc3 a4 10.Ng5 a3 11.Bc1 d5 12.0-0 d4 13.ed4; 8.a4 Nbd7 9.0-0 h6 10.Nbd2 c6 11.Nc4 Nb6 12.Nb6 Qb6 13.c4; 8.c4 Nbd7 9.Nc3 Nc5 10.0-0 Qd7 11.Na4 Na4 12.Qa4 h6 13.Bc3; 8.Nbd2 Nbd7 9.0-0 Nc5 10.c4 a4 11.Qc2 Qd7 12.Ng5 Bf5 13.Nde4; 8.g3 Nbd7 9.0-0 h6 10.Nc3 c6 11.Qd2 Qc7 12.Ba3 Rfc8 13.Rfc1) 8...Nbd7 9.0-0 h6 10.Nc3 a4 11.e4 Nc5 12.Ba3 d5 13.Ne5.

7.b5= Bf5 8.e4 (8.0-0 Nbd7 9.Nc3 a4 10.e4 Bg6 11.Ba3 Nb6 12.Bc1 Qd7 13.Be3; 8.Nc3 Nbd7 9.0-0 a4 10.e4 Bg6 11.Ba3 Nb6 12.Qc1 Re8 13.Bb2; 8.h3 Nbd7 9.0-0 h6 10.Nc3 Be6 11.Rb1 Re8 12.Qd2 Qb8 13.Rfe1) 8...Be6 9.Nc3 Nbd7 10.Ng5 Nc5 11.0-0 h6 12.Ne6 Ne6 13.Qd2.

7.b5= Bg4 8.h3 (8.0-0 h6 9.Nbd2 Nbd7 10.a4 Nc5 11.h3 Be6 12.Re1 Bf5 13.d4; 8.Nc3 h6 9.h3 Be6 10.e4 Nbd7 11.d4 c6 12.0-0 Qc7 13.Ba3; 8.Nbd2 Nbd7 9.h3 Bf5 10.e4 Be6 11.Ng5 Nc5 12.Ne6 fe6 13.a4) 8...Be6 9.0-0 h6 10.Nc3 Nbd7 11.Rb1 a4 12.Ba3 d5 13.Qc1.

7.b5= h6 8.0-0 (8.h3 Be6 9.Nc3 Nbd7 10.0-0 Re8 11.Na4 c6 12.bc6 bc6 13.c4; 8.Nc3 Be6 9.0-0 Nbd7 10.h3 a4 11.a3 d5 12.Qd2 Bd6 13.Na2; 8.c4 Bf5 9.Nc3 Nbd7 10.0-0 Nc5 11.d4 ed4 12.Nd4 Bg6 13.f4; 8.a4 Be6 9.0-0 Nbd7 10.h3 c6 11.c4 Qc7 12.Nc3 Rac8 13.Rb1; 8.a3 Be6 9.0-0 Nbd7 10.Nc3 d5 11.Qd2 Bd6 12.Na4 Qe7 13.h3) 8...Be6 9.Nc3 Nbd7 10.h3 a4 11.a3 Re8 12.Qd2 d5 13.Na2.

5.d3 Nc6

6.b5= Na5 A) 7.Be2 c6 (7...a6 8.a4 0-0 9.Qd2 b6 10.Nc3 h6 11.0-0 Be6 12.e4 Qd7) 8.0-0 cb5 9.d4 e4 10.Nfd2 0-0 11.Nc3 d5 12.Nb5 a6; B) 7.Nc3 0-0 (7...h6 8.Be2 Be6 9.Qd2 0-0 10.0-0 c6 11.a4 Qc7 12.e4 Rfd8; 7...a6 8.a4 0-0 9.Be2 h6 10.0-0 Be6 11.Qd2 c6 12.h3 Qc7; 7...c6 8.a4 0-0 9.Be2 h6 10.0-0 Be6 11.Qd2 Qc7 12.e4 Rfd8; 7...Bf5 8.Be2 0-0 9.0-0 h6 10.Qd2 Be6 11.h3 c6 12.a4 Qc7; 7...Rb8 8.Be2 0-0 9.0-0 h6 10.Qd2 c6 11.h3 Be6 12.a4 Qc7) 8.Be2 Be6 9.Ng5 Bf5 10.0-0 h6 11.Nge4 Qd7 12.Qd2 Be6; C) 7.Qd2 c6 8.Bc3 b6 9.Ba5 ba5 10.bc6 Qc7 11.Nc3 0-0 12.Rb1 Qc6.

6.b5= Nb4 7.e4 (7.c4 d5 8.cd5 Qd5 9.Nc3 Qc5 10.a3 Nbd5 11.Nd5 Qd5 12.Be5 0-0; 7.Nbd2 a6 8.a3 Nbd5 9.ba6 Ra6 10.d4 Rb6 11.Nc4 Rb2 12.Nb2 e4; 7.c3 Nd3 8.Bd3 e4 9.Be2 ef3 10.Bf3 0-0 11.c4 Be6 12.Qc2 d5) 7...d5 8.Nbd2 de4 9.de4 Bc5 10.Be2 Ng4 11.0-0 Qd6 12.c3 Bf2.

6.b5= Nb8 7.Nc3 (7.Be2 a6 8.a4 ab5 9.ab5 Ra1 10.Ba1 0-0 11.Nc3 h6 12.0-0 Be6; 7.a4 0-0 (7...Be6 8.Ng5 0-0 9.Ne6 fe6 10.Be2 Nbd7 11.0-0 d5 12.Nd2 Bd6; 7...h6 8.Nc3 0-0 9.Be2 Be6 10.0-0 Nbd7 11.Qd2 c6 12.h3 Qc7; 7...Bf5 8.Nc3 0-0 9.e4 Be6 10.Be2 Nbd7 11.Ng5 Nc5 12.0-0 Bd7; 7...Nbd7 8.Nc3 0-0 9.Be2 Nc5 10.0-0 h6 11.Ba3 Ne6 12.Qb1 Bd7; 7...Bg4 8.Nc3 Nbd7 9.h3 Be6 10.d4 0-0 11.Bd3 c5 12.bc6 bc6) 8.Nc3 Bf5 9.e4 Bg6 10.Be2 Nbd7 11.0-0 h6 12.Nh4 Bh7) 7...a6 (7...0-0 8.Be2 h6 9.0-0 Be6 10.e4 a6 11.a4 c5 12.h3 Nbd7; 7...h6 8.Be2 0-0 9.0-0 Be6 10.e4 a6 11.a4 c5 12.Qd2 Nbd7; 7...Nbd7 8.Be2 0-0 9.0-0 Nc5 10.Qd2 Bf5 11.Ba3 b6 12.h3 h6; 7...Bf5 8.e4 Bg6 9.Be2 a6 10.a4 Nbd7 11.0-0 0-0 12.Nh4 Nc5; 7...c6 8.a4 0-0 9.Be2 h6 10.0-0 Be6 11.e4 Nbd7 12.d4 a6) 8.a4 ab5 (8...0-0 9.Be2= h6 10.0-0 Be6 11.e4 c5 12.Qd2 Nbd7) 9.ab5+= (worse is 9.Nb5 0-0+= 10.Be2 h6 11.0-0 Be6 12.d4 e4) 9...Ra1 10.Qa1 0-0 11.Qa7 Nbd7 12.Be2 Nc5 (12...d5 13.0-0+=) 13.0-0 Bd7 (13...Qd7 14.Ra1+=) 14.d4+/- ed4 15.ed4 Ne6 16.Qb7 Qb8 17.Qb8 Rb8 18.d5 Nf4 19.Bc4 Bg4 (19...Ng4 20.Ra1 Bf6 21.Ra3+/-) 20.Nd4+– Nd7? (20...Ra8 21.Re1 Bf8 22.g3+–) 21.f3 Bh5? (21...Nb6 22.Nc6 Re8 23.fg4 Nc4 24.Rf4 Nb2 25.Ne7 Re7+–) 22.g3 Bf6 23.Nc6 (23.gf4?! Bd4 24.Kg2 Bg6=) 23...Nb6 24.Bb3 Nh3 (24...Bc3 25.gf4 Bb2 26.Nb8 Bd4 27.Kg2 Bc3+–) 25.Kg2 Ng5 (25...Re8 26.Kh3 Re3+–) 26.Nb8 Bg6 (26...Bf3 27.Rf3 Nf3 28.Kf3+–) 27.Re1 h6 28.Re8 Kh7 29.h4 Nf3 30.Kf3 Bc3 31.Bc3 Bc2 32.Bc2 g6 (32...f5 33.Bf5 g6 34.Rh8) 33.Rh8 1–0. mrkt – opus26, internet, 2011.

5.d3 Bg4

6.h3 Be6 7.Be2 0-0 8.0-0 a5 9.b5 Nbd7 10.c4 c6 11.bc6 bc6 12.Qc2 Rb8 13.Nbd2 Qc7 14.Rab1 h6 15.d4 Rb7 16.Bc3 Rfb8 17.Rb7 Rb7 (worse is 17...Qb7 18.de5 de5 19.Ne5+/-) 18.Rb1 Rb1 19.Nb1 e4 20.Nfd2 Bf5 (20...d5 21.cd5 cd5 22.Qa4+=) 21.Qa4+/- Bd8 22.Nb3 Qc8 23.Na5 c5 24.Qc6 Bc7 (24...Qb8!? 25.Nb7 cd4 26.Bd4 Ne5+/-) 25.Qb7+– Nb6 (25...Qb7 26.Nb7 cd4 27.Bd4 Kf8+–) 26.dc5 dc5 27.Bf6 gf6 28.Nc3 Be5 29.Qc8 (29.Qb6?! Bc3 30.Nc6 Qf8+–) 29...Nc8 30.Na4 Bd6 31.Nb3 Kf8 32.Bg4 Bg4 33.hg4 Ke7 34.Nbc5 (34.Nd2 f5 35.gf5 Kf6+–) 34...Bc5 35.Nc5 Nd6 36.Kh2 Nc4 37.Ne4 Ne5 38.Kh3 Ke6 39.a4 (39.Ng3 Nd3 40.f3 Ke5+–) 39...f5 40.gf5 Kf5 41.Ng3 Ke6 42.a5 (42.a5 Kd5 43.Nf5+–) 1–0. Woelfelschneider,Peter – Fraenken, 2009.

6.Be2 0-0

7.0-0 a5 8.b5 (8.h3 Bd7 9.ba5 Nc6 10.c4 Ra5 11.Nc3 h6 12.Nb5 Be6 13.Bc3) 8...h6 9.Nbd2 Nbd7 10.Nc4 Be6 11.Ba3 Bc4 12.dc4 e4 13.Nd4.

7.0-0 Nd5 8.Qd2 a5 9.h3 Be6 10.b5 Nd7 11.c4 N5b6 12.Nc3 f6 13.Rac1.

7.0-0 Be6 8.Ng5 (8.Nc3 h6 9.a3 Nc6 10.h3 Re8 11.b5 Na5 12.e4 c6 13.a4; 8.a3 a5 9.Nc3 ab4 10.ab4 Nc6 11.b5 Nb4 12.Ra8 Qa8 13.Qd2; 8.Qd2 a6 9.Ng5 Bd7 10.Nc3 Nc6 11.a3 d5 12.Rad1 Bd6 13.h3; 8.h3 Nbd7 9.Qd2 a5 10.ba5 c6 11.Ng5 Qa5 12.Ne6 fe6 13.Qa5; 8.d4 h6 9.de5 de5 10.b5 a6 11.ba6 Na6 12.Be5 Ng4 13.Bg3; 8.Nbd2 h6 9.Nc4 Qd7 10.a4 Nc6 11.Qd2 Bc4 12.dc4 e4 13.Nd4; 8.c4 a5 9.b5 Nbd7 10.Nc3 h6 11.d4 Bf5 12.h3 c6 13.c5) 8...Bf5 9.Bf3 c6 10.Nd2 h6 11.Nge4 Nbd7 12.Qe2 Qc7 13.h3.

7.0-0 Qe8 8.Nc3 (8.h3 Be6 9.Nc3 Nc6 10.b5 Na5 11.Ng5 Bd7 12.a4 d5 13.Nf3; 8.a3 Nc6 9.Nc3 h6 10.b5 Na5 11.Qd2 Be6 12.h3 Qd7 13.e4; 8.Nbd2 Nc6 9.b5 Na5 10.d4 e4 11.Ng5 Bf5 12.Qe1 b6 13.Nb3; 8.c4 a5 9.b5 Nbd7 10.Nc3 h6 11.h3 Bf5 12.d4 c5 13.Qd2; 8.Na3 Qa4 9.h3 Be6 10.Ng5 Qb4 11.Ne6 fe6 12.Nc4 Nc6 13.c3; 8.c3 a5 9.h3 Bf5 10.e4 Bd7 11.Nbd2 Ba4 12.Nb3 Nc6 13.ba5; 8.d4 e4 9.Nfd2 Be2 10.Qe2 Nc6 11.c4 Nb4 12.Nc3 Bd8 13.a3) 8...Na6 9.b5 Nc5 10.d4 ed4 11.Qd4 Qd7 12.Nd5 h6 13.h3.

7.0-0 g6 8.h3 (8.a3 Qd7 9.h3 Be6 10.d4 e4 11.Ng5 Bf5 12.g4 h6 13.gf5; 8.Nbd2 Nc6 9.b5 Nb4 10.c4 Bf5 11.Qb3 d5 12.Ne5 a5 13.c5; 8.Qd2 Na6 9.h3 Be6 10.Ng5 Bd7 11.Bf3 Bc6 12.c4 Bf3 13.Nf3; 8.Nc3 Nc6 9.a3 Qd7 10.b5 Na5 11.h3 Be6 12.Ng5 a6 13.Ne6; 8.Ng5 Be2 9.Qe2 h6 10.Nf3 Nc6 11.b5 Na5 12.Bc3 b6 13.Ba5; 8.c4 a5 9.b5 Nbd7 10.Nc3 Nc5 11.d4 ed4 12.ed4 Nce4 13.Qc2; 8.Na3 Nc6 9.b5 Nb4 10.Qd2 a5 11.Nc4 Qd7 12.a4 b6 13.h3; 8.d4 e4 9.Nfd2 Be2 10.Qe2 d5 11.b5 a6 12.Nc3 Nbd7 13.a4) 8...Bd7 9.Nc3 Nc6 10.a3 a6 11.Qd2 d5 12.d4 e4 13.Ne5.

7.a3 a5 8.b5 (8.Nc3 ab4 9.ab4 Nc6 10.Ra8 Qa8 11.b5 Nb4 12.0-0 Qa7 13.Qd2) 8...Nbd7 9.Nc3 d5 10.h3 Bf5 11.0-0 Bd6 12.Nd5 Nd5 13.e4.

7.a3 a6 8.Nc3 (8.h3 Be6 9.Nc3 Nc6 10.0-0 h6 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1; 8.0-0 Nc6 9.Nc3 d5 10.h3 Bf5 11.Na4 Qe8 12.Qd2 h6 13.Nh4; 8.Nbd2 Nc6 9.h3 Be6 10.0-0 h6 11.c4 Qd7 12.Qc2 Rfd8 13.Bc3; 8.c4 a5 9.h3 Bf5 10.b5 Nbd7 11.Nc3 Nc5 12.0-0 Qd7 13.e4; 8.Qd2 a5 9.b5 Nbd7 10.Nc3 Nc5 11.0-0 Qd7 12.h3 Bf5 13.e4) 8...Nc6 9.h3 Bf5 10.0-0 d5 11.e4 de4 12.de4 Ne4 13.Ne4.

7.a3 c5 8.bc5 (8.0-0 cb4 9.ab4 Nc6 10.b5 Qb6 11.Nc3 Nb4 12.Qd2 Qc7 13.e4; 8.h3 Be6 9.bc5 Qa5 10.Nbd2 Qc5 11.0-0 Nc6 12.Ng5 Bf5 13.Nde4) 8...Nc6 9.Nbd2 dc5 10.Ne5 Ne5 11.Be5 Qd5 12.Bg4 Qe5 13.Rb1.

7.a3 Nc6 8.b5 (8.Nc3 a6 9.0-0 d5 10.d4 ed4 11.Nd4 Be2 12.Nce2 Qd7 13.Nc6; 8.0-0 a6 9.Nc3 d5 10.d4 e4 11.Ne5 Be2 12.Ne2 Qd6 13.Qd2; 8.h3 Be6 9.Nc3 h6 10.0-0 a6 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1; 8.Nbd2 Be6 9.c4 a6 10.0-0 Qd7 11.h3 b5 12.Rc1 Rab8 13.Ng5) 8...Na5 9.Qd2 c5 10.Nc3 a6 11.a4 Qb6 12.0-0 h6 13.e4.

7.a3 Nbd7 8.0-0 (8.Nc3 a5 9.0-0 d5 10.h3 Bf5 11.b5 Bd6 12.Nd5 Nd5 13.e4; 8.h3 Be6 9.Nc3 d5 10.0-0 a5 11.b5 h6 12.Qd2 Bd6 13.Na4) 8...a5 9.Nc3 d5 10.h3 Bf5 11.e4 de4 12.Ne4 Ne4 13.de4.

7.a3 Be6 8.0-0 (8.Nc3 h6 9.0-0 Nc6 10.b5 Na5 11.Qd2 c6 12.a4 Qc7 13.e4; 8.Ng5 Bf5 9.Nc3 h6 10.Nge4 Nc6 11.b5 Na5 12.0-0 Qd7 13.Qd2; 8.Nbd2 h6 9.0-0 Nc6 10.c4 Qd7 11.b5 Na5 12.Bc3 b6 13.Qc2; 8.h3 a5 9.b5 Nbd7 10.Nc3 h6 11.0-0 Qb8 12.Re1 Re8 13.Qd2) 8...h6 9.Nc3 Nc6 10.b5 Na5 11.Qd2 c6 12.a4 a6 13.e4.

7.a3 Re8 8.0-0 (8.Nc3 Nc6 9.h3 Bf5 10.b5 Na5 11.0-0 h6 12.e4 Be6 13.Qd2; 8.h3 Be6 9.Nc3 h6 10.0-0 Nc6 11.b5 Na5 12.Qd2 c6 13.Rab1; 8.Nbd2 Nc6 9.h3 Be6 10.c4 a6 11.0-0 Qd7 12.Qc2 h6 13.d4) 8...Qd7 9.h3 Bf5 10.Nc3 Nc6 11.Qd2 h6 12.b5 Na5 13.e4; I) 7...a5 8.b5 (8.Nc3 ab4 9.ab4 Nc6 10.Ra8 Qa8 11.b5 Nb4 12.0-0 Qa7 13.Qd2; 8.h3 Be6 9.b5 Nbd7 10.Nc3 h6 11.0-0 Re8 12.Re1 a4 13.Qd2) 8...Nbd7 9.Nc3 h6 10.0-0 Be6 11.h3 d5 12.Qd2 Bd6 13.Na4.

7.a3 h6 8.Nc3 (8.0-0 a5 9.b5 Nbd7 10.Nc3 Be6 11.h3 Re8 12.Qd2 d5 13.Na4; 8.h3 Be6 9.Nc3 Nc6 10.0-0 a6 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1; 8.Nbd2 Nc6 9.0-0 Qd7 10.b5 Na5 11.Rb1 Be6 12.Bc3 b6 13.e4) 8...a5 9.h3 Bf5 10.b5 Nbd7 11.0-0 Be6 12.Na4 c6 13.bc6.

7.Nc3 a5 8.b5 h6 9.0-0 Nbd7 10.Qd2 a4 11.a3 Be6 12.h3 Qe8 13.Qe1.

7.Nc3 a6 8.h3 (8.0-0 Nc6 9.h3 Be6 10.a3 h6 11.Qd2 Re8 12.Rfe1 Qb8 13.Ne4; 8.a3 Nc6 9.h3 Bf5 10.0-0 d5 11.e4 Bg6 12.Nh4 Nd4 13.Ng6; 8.Qd2 Nc6 9.h3 Bf5 10.a3 d5 11.0-0 Qd6 12.Rfe1 h6 13.Rab1; 8.d4 Nc6 9.0-0 ed4 10.Nd4 Be2 11.Nce2 Nb4 12.c3 Nc6 13.Qb3) 8...Bd7 9.a3 Nc6 10.Qd2 d5 11.0-0 Bd6 12.Na4 b6 13.Rfe1.

7.Nc3 Qd7 8.0-0 (8.b5 a6 9.h3 Be6 10.a4 c6 11.0-0 ab5 12.ab5 Ra1 13.Qa1; 8.h3 Bf5 9.b5 c6 10.a4 Qc7 11.0-0 Nbd7 12.e4 Be6 13.Ng5; 8.a3 Nc6 9.0-0 a6 10.h3 Bf5 11.e4 Bg6 12.Nd5 h6 13.Ne3) 8...Na6 9.Ba3 Qc6 10.Qd2 Qb6 11.h3 Bd7 12.Rab1 Rfe8 13.e4.

7.Nc3 Nbd7 8.h3 (8.0-0 a5 9.b5 h6 10.h3 Be6 11.Re1 a4 12.a3 d5 13.Qd2; 8.a3 d5 9.0-0 a5 10.h3 Be6 11.b5 h6 12.Qd2 Bd6 13.Na4; 8.d4 ed4 9.Nd4 Be2 10.Qe2 a5 11.ba5 Ra5 12.0-0 Ne5 13.e4) 8...Be6 9.0-0 a5 10.a3 d5 11.ba5 Ra5 12.d4 e4 13.Ng5.

7.Nc3 Bf5 8.0-0 (8.e4 Be6 9.d4 d5 10.ed5 Nd5 11.Nd5 Bd5 12.de5 Bb4 13.c3; 8.b5 Nbd7 9.0-0 Nc5 10.d4 ed4 11.Nd4 Qd7 12.Nf5 Qf5 13.Rc1; 8.h3 Na6 9.b5 Nc5 10.0-0 Qd7 11.d4 ed4 12.Nd4 d5 13.Nf5) 8...a5 9.b5 Nbd7 10.e4 Bg6 11.Nh4 Nc5 12.f4 c6 13.Ng6.

7.c4 a5 8.b5 Nbd7 9.Nc3 Nc5 10.Qc2 c6 (10...Re8 11.0-0=) 11.0-0 Qd7 12.a4 (12.d4 ed4 13.Nd4 Rac8=) 12...Qf5 13.Rac1 (13.Rad1 cb5 14.Nb5 Qg6=) 13...Qg6 (13...cb5 14.e4 Qf4 15.Nb5=) 14.Kh1 (14.d4 Qc2 15.Rc2 Bf5=) 14...Nh5 (14...Bf3 15.gf3 Qf5 16.Rfd1=) 15.Ba3 (15.d4 e4 16.dc5 ef3 17.gf3+/-) 15...Qe6 (better is 15...Nd7!?=) 16.h3+/- Bh3 (16...Qh6 17.bc6 bc6 18.Bc5 Bf3 19.Bf3 (19.gf3?! dc5 20.Rb1 f5+=) 19...dc5 20.Rb1+/-) 17.gh3+– Qh3 18.Nh2 f5 (18...Ne6 19.Bf3 Rac8 20.Ne4+–) 19.Rg1 (19.bc6 bc6 20.Bf3 e4 21.de4 Bf6 22.Bh5 Qh5 23.Bc5 dc5 24.ef5 Rab8+–) 19...Rf6 (19...Ne6 20.Qb3 c5 21.Bf3+–) 20.Rg2 Rh6 (20...Ne6 21.Qd1 Rh6 22.Qb3+/-) 21.Bc5 dc5 22.Rcg1 (22.Rb1 Re8+–) 22...g5 (22...cb5 23.Qb2 b4 24.Nd5+–) 23.Bh5 (23.bc6 bc6 24.Qb2 Ng7+–) 23...Rh5 24.Qe2 Bf6 25.e4 f4 26.f3 Rd8 27.Nd1 (27.bc6 bc6 28.Rd1 Rb8+/-) 27...cb5+= 28.cb5 Qd7 29.Nf2 (29.Nb2 Qd4+/-) 29...Qd4+= 30.Qc2 Kf7 (30...Kf8 31.Nd1+=) 31.Rc1+/- b6 32.Qc4 (32.Kg1 Bg7+/-) 32...Ke7 33.Qd4 Rd4 34.Rc4 Rd6 35.Kg1 Rh4 36.Kf1 (36.Nf1 h5+=) 36...Ke6 37.Ke2 Rd7 (37...h5 38.Kd2=) 38.Nhg4+= Rg7 (38...Bd8 39.Nd1+=) 39.Rc1 Rd7 40.Rc4 (40.Nf6 Kf6 41.Nd1 Rh1+=) 40...Rg7 41.Rh2 (41.Kf1 Be7=) 41...Rh2= 42.Nh2 h5 43.Kf1 Rd7 44.Kg2 Bd8 (44...Bg7 45.Nf1+=) 45.Kh3 Rh7 46.Nf1 Rg7 47.Rc2 Rd7 48.Nd2 Rd4 49.Nc4 Rd7 50.Rc1 Rg7 51.Rh1 Bc7 (51...Rd7 52.Kh2+=) 52.Kg2+/- Rh7 (52...h4 53.Kh3+/-) 53.Nd1 Rd7 (better is 53...h4!?+/-) 54.Rh5+– Rd3 55.Rh6 Kd7 56.Nf2 Rd4 57.Nb6 Bb6 58.Rb6 c4 (58...Ra4 59.Nd3 Ke7 60.Nc5+–) 59.Rc6 c3 60.Rc3 Ra4 61.Nd3 Ra1 62.Rc6 Rb1 63.Ne5 Kd8 64.Ra6 Rb5 65.Ra5 Rb2 (65...Ra5 66.Nc6 Kd7 67.Na5+–) 66.Kh3 Ke7 67.Kg4 Kf6 68.Nd7 Ke7 69.Rd5 Rg2 70.Kf5 Rg3 (70...Rc2 71.Kg5 Rc1 72.Kf4+–) 71.Ne5 (71.Nf6 Rg4 72.Rd7 Kf8 73.Ke6 Rh4 74.Rf7) 71...Rg1 (71...g4 72.Kf4 Rg1 73.Nc6 Kf7 74.fg4+–) 72.Rd7 (72.Nc6 Kf8 73.Kg6 Rd1 74.Rd1 g4 75.Rd8) 72...Ke8 73.Rg7 Rb1 74.Rg5 (74.Rg5 Rb6 75.Kf4+–) 1–0. Malagon,A – Van der Laat,Jorge, Lugano, 1968.

7.c4 d5 8.Ne5 Bb4 9.Nd2 dc4 10.Nec4 (worse is 10.Bg4 c3+=) 10...Be2 11.Qe2 =.

7.Qd2 A) 7...a6 8.h3 (8.Nc3 Nc6 9.a3 d5 10.0-0 e4 11.Nd4 Nd4 12.ed4 Be2 13.Qe2; 8.a3 a5 9.b5 Nbd7 10.Nc3 h6 11.0-0 Nc5 12.d4 Nce4 13.Ne4; 8.0-0 Nc6 9.h3 Bf5 10.a3 Qd7 11.e4 Bg6 12.Qe3 h6 13.Nc3) 8...Be6 9.Nc3 Nc6 10.a3 d5 11.0-0 d4 12.Na4 h6 13.Nc5; B) 7...Nbd7 8.h3 (8.0-0 a5 9.h3 Bf5 10.ba5 c6 11.Bc3 h6 12.e4 Be6 13.Qe3; 8.Nc3 d5 9.h3 Bf3 10.Bf3 Bb4 11.a3 Ba5 12.d4 c5 13.0-0; 8.Na3 Nb6 9.h3 Be6 10.0-0 Na4 11.Bc1 h6 12.c4 Qd7 13.Nb5) 8...Be6 9.0-0 h6 10.Nc3 a5 11.b5 a4 12.a3 Ra7 13.Rad1; C) 7...a5 8.b5 (8.h3 Bd7 9.b5 Bb5 10.Nc3 Bd7 11.0-0 Nc6 12.Rab1 h6 13.Ba3) 8...e4 9.Ng5 Be2 10.Qe2 d5 11.Nc3 h6 12.Nh3 a4 13.0-0; D) 7...Na6 8.0-0 (8.h3 Bd7 9.0-0 h6 10.e4 c5 11.bc5 Nc5 12.Nc3 Be6 13.Qe3) 8...Qe8 9.h3 Be6 10.c4 Rd8 11.Ng5 d5 12.Ne6 fe6 13.c5; E) 7...e4 8.de4 Ne4 9.Qd3 d5 10.Nbd2 Nd2 11.Qd2 Nc6 12.b5 Bf6 13.0-0-0; F) 7...h6 8.0-0 (8.Nc3 Nc6 9.b5 Nb4 10.0-0 c6 11.h3 Bd7 12.Ne4 Nbd5 13.bc6; 8.h3 Be6 9.0-0 a6 10.Nc3 Nc6 11.a3 Re8 12.Ne4 Qd7 13.Rfe1; 8.Na3 Na6 9.0-0 Nd5 10.c3 Qd7 11.h3 Be6 12.Nc2 Qa4 13.Bd1) 8...Na6 9.a3 c5 10.b5 Qb6 11.h3 Bd7 12.c4 Nc7 13.Nc3; G) 7...Qe8 8.h3 (8.Nc3 Nc6 9.b5 Nb4 10.0-0 a6 11.h3 Bd7 12.a3 Nbd5 13.Nd5; 8.a3 a5 9.h3 Bd7 10.0-0 ab4 11.ab4 Ra1 12.Ba1 Na6 13.e4; 8.0-0 a5 9.h3 Be6 10.ba5 Nc6 11.Nc3 h6 12.Nb5 Qd7 13.c4; 8.c4 a6 9.a3 a5 10.b5 Nbd7 11.h3 Bf5 12.g4 Be6 13.Qc2) 8...Be6 9.0-0 a5 10.ba5 Nc6 11.Ng5 Bf5 12.Nc3 h6 13.Nge4; H) 7...Bd7 8.Nc3 (8.0-0 Na6 9.c4 h6 10.Qc3 c5 11.b5 Nc7 12.Nbd2 Ne6 13.Ne4) 8...Nc6 9.a3 a6 10.0-0 h6 11.h3 d5 12.d4 e4 13.Ne5; I) 7...Qd7 8.Nc3 (8.h3 Bf5 9.Nc3 Na6 10.e4 Be6 11.Ba3 c5 12.bc5 Nc5 13.Bc5; 8.Na3 Qa4 9.h3 Bf5 10.0-0 d5 11.Nb1 Qb4 12.Be5 Nc6 13.Bc7; 8.0-0 a5 9.h3 Bh5 10.ba5 Nc6 11.Bc3 e4 12.de4 Ne4 13.Qd5; 8.c4 a6 9.h3 Be6 10.0-0 Nc6 11.b5 ab5 12.cb5 Na5 13.Nc3) 8...Nc6 9.b5 Nb4 10.0-0 a6 11.h3 Be6 12.a3 Nbd5 13.Nd5.

7.Nbd2 a5 8.ba5 Nc6 9.h3 Be6 10.Ng5 Bf5 11.0-0 h6 12.Nge4 Ra5 13.Bc3.

7.Nbd2 a5 8.b5 Nbd7 9.h3 Bf5 10.e4 Be6 11.Ng5 Nc5 12.Ne6 fe6 13.0-0.

7.Nbd2 a5 8.b5 Nbd7 9.h3 Bf5 10.e4 Be6 11.Ng5 Nc5 12.Ne6 fe6 13.a4.

7.Nbd2 a5 8.h3 Bd7 9.ba5 Nc6 10.0-0 Ra5 11.c4 h6 12.Bc3 Ra3 13.Qc2.

7.Nbd2 Na6 8.c3 (8.a3 Qd7 9.0-0 h6 10.c4 Be6 11.h3 c5 12.Qb3 Rab8 13.b5; 8.h3 Bf3 9.Bf3 Nb4 10.0-0 Qd7 11.Nc4 Nbd5 12.a4 Rfb8 13.Qb1) 8...h6 9.0-0 Qd7 10.Qb3 Be6 11.c4 Rab8 12.Rac1 Rfe8 13.h3.

7.Nbd2 Bd7 8.0-0 (8.c4 a6 9.0-0 Nc6 10.Qb3 h6 11.Ne4 Be6 12.h3 Qd7 13.Nfd2; 8.c3 a5 9.0-0 ab4 10.cb4 Ba4 11.Qc1 Nc6 12.a3 Qd7 13.Ne4) 8...Na6 9.c3 c5 10.a3 h6 11.h3 Qc7 12.Qb3 b5 13.c4.

7.Nbd2 Bf5 8.0-0 (8.e4 Be6 9.0-0 a5 10.b5 Nbd7 11.d4 ed4 12.Nd4 Nc5 13.f3; 8.Nc4 Na6 9.Qd2 b5 10.Na5 Bd7 11.0-0 h6 12.a3 Qb8 13.h3; 8.h3 Na6 9.c3 c5 10.a3 Qc7 11.0-0 b5 12.e4 Bd7 13.Rc1; 8.Nb3 Qd7 9.0-0 Qa4 10.e4 Bd7 11.Qd2 Nc6 12.Bc3 h6 13.h3) 8...Qd7 9.e4 Bg6 10.a4 Nc6 11.b5 Nd8 12.Nc4 Ne6 13.Nh4.

7.Nbd2 h5 8.0-0 (8.h3 Be6 9.0-0 Nc6 10.b5 Na5 11.d4 e4 12.Ng5 Bf5 13.h4; 8.e4 Qd7 9.0-0 Nc6 10.b5 Nd8 11.a4 a6 12.ba6 Ra6 13.d4; 8.c3 a5 9.h3 Bf5 10.b5 a4 11.Nc4 Bd7 12.d4 e4 13.Ng5; 8.d4 e4 9.Ng5 d5 10.0-0 Qd6 11.f3 ef3 12.Ndf3 Qb4 13.Rb1; 8.a3 Nc6 9.h3 Bf5 10.e4 Be6 11.0-0 b5 12.d4 Nd4 13.Bd4; 8.b5 a6 9.a4 ab5 10.ab5 Nbd7 11.h3 Bf5 12.e4 Be6 13.Ng5; 8.Nc4 Na6 9.a3 b5 10.Na5 c5 11.Qd2 e4 12.de4 Ne4 13.Qd3) 8...Nc6 9.h3 Bd7 10.b5 Na5 11.d4 e4 12.Ng5 d5 13.c4.

7.h3 Bf3 8.Bf3 d5 9.b5 a6 10.ba6 Ra6 11.Be5 Nc6 12.Bc3 Rb6 13.0-0.

7.0-0 a6

8.a3 Nc6 9.Nc3 h6 10.h3 Be6 11.Qd2 Re8 12.Ne4 Qd7 13.c4.

8.a3 Nc6 9.h3 Bf5 10.Nbd2 Qd7 11.e4 Be6 12.Re1 g6 13.d4.

8.Nc3 Nc6 9.h3 Be6 10.a3 h6 11.Qd2 Re8 12.Ne4 Qd7 13.c4.

8.Nc3 Nc6 9.h3 Be6 10.a3 h6 11.d4 ed4 12.Nd4 Nd4 13.Qd4.

8.c4 Nc6 9.a3 Qd7 10.Nc3 h6 11.h3 Be6 12.Qd2 Rab8 13.d4.

8.Qd2 Nc6 9.h3 Bf3 10.Bf3 d5 11.a3 e4 12.Be2 Qd6 13.Nc3.

8.Nbd2 Nc6 9.a3 h6 10.e4 Qd7 11.h3 Be6 12.d4 ed4 13.Nd4.

8.Nbd2 Nc6 9.h3 Be6 10.a3 h6 11.Ne4 Qd7 12.Qd2 Rfd8 13.a4.

8.d4 e4 9.Nfd2 Be2 10.Qe2 d5 11.a3 a5 12.Nc3 c6 13.b5.

8.h3 Be6 9.Nc3 Nc6 10.a3 h6 11.Qd2 Re8 12.Ne4 Qd7 13.c4.

8.h3 Bf5 9.e4 Be6 10.Nc3 Nc6 11.d4 ed4 12.Nd4 Nb4 13.Qd2.

7.0-0 Na6

8.a3 Qd7 9.Nc3 c5 10.bc5 Nc5 11.d4 ed4 12.Qd4 Ne6 13.Qd2.

8.a3 h6 9.Nc3 c5 10.bc5 Nc5 11.d4 ed4 12.Nd4 Be2 13.Qe2.

8.b5 Nc5 9.Nc3 Qd7 10.d4 ed4 11.Qd4 Bf5 12.Rac1 h6 13.h3.

8.b5 Nc5 9.Nc3 Qd7 10.h3 Bf5 11.Ba3 e4 12.Nd4 d5 13.Qd2.

8.c3 c5 9.a3 Qc7 10.Nbd2 Bd7 11.Qb3 h6 12.c4 Be6 13.h3.

8.c3 Qe8 9.Nbd2 h6 10.a4 Qd7 11.h3 Be6 12.Qc2 c5 13.b5.

8.Qd2 h6 9.a3 c5 10.b5 Nc7 11.Nc3 Qd7 12.h3 Be6 13.Rab1.

8.h3 Bd7 9.Qd2 c5 10.bc5 Nc5 11.Nc3 Qb6 12.Rab1 Qc6 13.d4.

7.0-0 Nc6

8.a3 a6 9.h3 Be6 10.Nc3 d5 11.d4 e4 12.Ne5 Qd6 13.Na4.

8.a3 Qd7 9.Nc3 h6 10.Qd2 a6 11.h3 Bh5 12.Rae1 d5 13.d4.

8.b5 Nb4 9.h3 Be6 10.Qd2 Nbd5 11.c4 Nb6 12.Nc3 h6 13.a4.

8.b5 Nb4 9.h3 Be6 10.Qd2 Nbd5 11.Ng5 Bd7 12.c4 h6 13.cd5.

8.h3 Bf3 9.Bf3 Nb4 10.Na3 Qd7 11.Qd2 Qa4 12.Nc4 Nbd5 13.g3.

7.0-0 Qd7

8.a3 Nc6 9.Nc3 h6 10.b5 Na5 11.h3 Be6 12.Qd2 c6 13.a4.

8.Na3 Na6 9.h3 Be6 10.c3 h6 11.Qc2 c5 12.b5 Nc7 13.c4.

8.Nc3 Na6 9.a3 c5 10.b5 Nc7 11.a4 h6 12.h3 Bf5 13.e4.

8.Nc3 Nc6 9.b5 Na5 10.h3 Bf5 11.e4 Be6 12.Ng5 a6 13.Ne6.

8.Qd2 a5 9.h3 Bf5 10.e4 Be6 11.ba5 Nc6 12.Bc3 Rfd8 13.a4.

8.Nbd2 Nc6 9.b5 Na5 10.Rb1 Qb5 11.d4 Qd5 12.c4 Qe6 13.de5.

8.Nbd2 Nc6 9.b5 Na5 10.Rb1 c6 11.h3 Be6 12.d4 e4 13.Ng5.

8.h3 Be6 9.Nc3 Na6 10.Ba3 c6 11.e4 c5 12.bc5 Nc5 13.Bc5.

8.h3 Be6 9.c4 a6 10.d4 e4 11.Nfd2 d5 12.cd5 Bd5 13.Nc3.

7.0-0 Nbd7

8.a3 c5 9.Nbd2 a5 10.h3 Be6 11.b5 h6 12.c4 Qc7 13.Qc2.

8.Na3 c5 9.b5 Qa5 10.h3 Bf5 11.e4 Be6 12.Ng5 Nb6 13.Ne6.

8.Nc3 d5 9.b5 Bd6 10.h3 Bf5 11.Nd5 Nd5 12.e4 Be6 13.ed5.

8.Qd2 a5 9.h3 Be6 10.b5 h6 11.Nc3 a4 12.a3 Qe8 13.Rfe1.

8.Nbd2 a5 9.ba5 Ra5 10.h3 Bf5 11.e4 Be6 12.d4 c6 13.c4.

8.h3 Be6 9.Qd2 a5 10.b5 h6 11.Nc3 a4 12.a3 b6 13.e4.

7.0-0 h6

8.a3 a5 9.b5 Nbd7 10.Nc3 d5 11.Qd2 Bd6 12.h3 Be6 13.Na4.

8.a3 a5 9.b5 Nbd7 10.Nc3 Be6 11.Rb1 d5 12.Na4 Bd6 13.Qd2.

8.Ba3 a6 9.h3 Be6 10.Qd2 Nc6 11.Nc3 d5 12.d4 Ne4 13.Qe1.

8.Na3 Na6 9.Qd2 c5 10.b5 Nb4 11.Nc4 e4 12.Nh4 Be2 13.Qe2.

8.Na3 Nc6 9.b5 Nb4 10.Qd2 a5 11.Nc4 Qd7 12.h3 Be6 13.a3.

8.Nc3 Nc6 9.b5 Na5 10.Qd2 Be6 11.e4 a6 12.a4 c6 13.h3.

8.Nc3 Be6 9.a3 Nc6 10.h3 Re8 11.b5 Na5 12.Qd2 c6 13.a4.

8.c4 a5 9.b5 Nbd7 10.Nc3 Re8 11.h3 Be6 12.d4 Bf5 13.Rc1.

8.Qd2 Na6 9.Na3 c5 10.b5 Nb4 11.Nc4 e4 12.Nh4 Be6 13.a3.

8.Qd2 Be6 9.a3 a6 10.Nc3 Nc6 11.h3 Re8 12.Rfe1 Qb8 13.Ne4.

8.Nbd2 Nc6 9.b5 Na5 10.h3 Be6 11.c4 a6 12.a4 c6 13.Qc2.

8.h3 Be6 9.Nc3 a5 10.b5 Nbd7 11.Rb1 a4 12.Ba3 d5 13.Bb4.

8.h3 Be6 9.Qd2 a6 10.Nc3 Nc6 11.a3 Re8 12.Rae1 Qb8 13.Nh2.

7.a3 Qd7

8.0-0 a5 9.h3 Be6 10.d4 ed4 11.Nd4 ab4 12.Ne6 Qe6 13.ab4.

8.Nc3 a6 9.h3 Bf5 10.g4 Be6 11.d4 ed4 12.Nd4 Nc6 13.Ne6.

8.Nc3 Nc6 9.0-0 a6 10.h3 Bf5 11.e4 Bg6 12.Nd5 Rfe8 13.Qd2.

8.c4 Nc6 9.Nc3 a6 10.0-0 Bf5 11.e4 Bg4 12.Nd5 Be6 13.Qc2.

8.Nbd2 Nc6 9.0-0 b5 10.h3 Bf5 11.c4 a6 12.Qc2 bc4 13.e4.

8.h3 Be6 9.Nc3 Nc6 10.0-0 h6 11.Qd2 a6 12.d4 ed4 13.ed4.

7.Nc3 Na6

8.a3 c5 9.b5 Nc7 10.0-0 Bd7 11.a4 a6 12.ba6 Na6 13.Nb5.

8.b5 Nc5 9.0-0 Qd7 10.d4 ed4 11.Qd4 Bf5 12.Rac1 Rfe8 13.Nd5.

8.b5 Nc5 9.0-0 Qd7 10.h3 Bf5 11.Ba3 e4 12.Nd4 d5 13.Qd2.

8.h3 Bf3 9.Bf3 Nb4 10.a3 Nc6 11.Nd5 Qd7 12.0-0 Nd5 13.Bd5.

8.h3 Bf3 9.Bf3 Nb4 10.d4 ed4 11.ed4 c5 12.0-0 cd4 13.Ne2.

7.Nc3 Nc6

8.a3 h5 9.h3 Bf5 10.b5 Na5 11.0-0 c6 12.e4 Bd7 13.a4.

8.b5 Na5 9.h3 (9.0-0 h6 10.Qd2 Qd7 11.d4 Bf3 12.gf3 ed4 13.Qd4) 9...Be6 10.Ng5= (10.0-0 h6 11.Qd2 a6 12.a4 c6 13.Ba3) 10...Bf5 11.0-0 Qd7 12.e4 h6 13.ef5.

8.b5 Nb4 9.0-0 a6 10.a3 Nbd5 11.Nd5 Nd5 12.h3 Be6 13.c4.

8.b5 Nb4 9.0-0 c6 10.Qd2 Qc7 11.h3 Bd7 12.Ne4 Nbd5 13.c4.

8.b5 Nb8 9.h3+= (9.0-0 h6 10.Nh4 Be6 11.f4 ef4 12.ef4 d5 13.f5) 9...Bf3 (9...Bf5 10.e4 Bg6 11.0-0 a6 12.a4 Nbd7 13.Nh4) 10.Bf3 c6 (10...d5 11.0-0 c6 12.a4 Nbd7 13.Qd2) 11.d4 ed4 (11...Qb6 12.0-0 Nbd7 13.a4) 12.Qd4 Qb6 (12...Nbd7 13.0-0+=) 13.0-0+/- Qd4 14.ed4 a6 15.Rfe1 Bd8 16.a4 ab5 (16...Bb6 17.Ne4 Ne4 18.Re4 ab5 19.Re7 Ra4 20.Ra4 ba4 21.Rb7+/-) 17.ab5 Ra1 18.Ra1 (worse is 18.Ba1 d5+=) 18...Nbd7 (18...Bb6!? 19.d5 cb5 20.Nb5 Bc5+/-) 19.Ra7+– cb5 20.Nb5 b6? (20...d5+–) 21.g4 h6 22.Nd6 Be7 (22...g6 23.Bc6 Be7 24.Nc4+– (24.Bd7?! Bd6 25.Bc6 Rc8+–)) 23.Nf5 g6 (23...Bb4 24.c3 Ba5+–) 24.Ne7 (24.Ne7 Kh8 25.d5+–) 1–0. Anonymous – vrede, internet, 2011.

8.h3 Bf3 9.Bf3 Nb4 10.0-0 d5 11.a3 Nc6 12.Qd2 Qd7 13.Na2.

8.a3 a6 9.0-0 d5 10.h3 Bf5 11.Na4 Qd6 12.Nh4 Bc8 13.Nf3.

7.Nc3 h6

8.0-0 a5 9.b5 Nbd7 10.h3 Be6 11.Rb1 Re8 12.Qd2 Rf8 13.Qd1.

8.0-0 Be6 9.h3 a5 10.b5 Nbd7 11.a4 d5 12.Qd2 Bd6 13.Qc1.

8.a3 a5 9.b5 Nbd7 10.0-0 Be6 11.Qd2 Qb8 12.h3 Qa7 13.Rfe1.

8.a3 a5 9.h3 Be6 10.b5 Nbd7 11.0-0 d5 12.Qd2 Bd6 13.Na4.

8.b5 Nbd7 9.h3 Be6 10.0-0 a6 11.a4 Re8 12.Qd2 b6 13.e4.

8.Qd2 Nc6 9.a3 a6 10.h3 Bh5 11.0-0 Qd7 12.Rae1 Rfe8 13.e4.

8.h3 Be6 9.0-0 a5 10.b5 Nbd7 11.Rb1 Qe8 12.Qd2 Qd8 13.Qd1.

8.h3 Be6 9.0-0 a5 10.b5 Nbd7 11.Rb1 Re8 12.Qd2 Qb8 13.Rfe1.

7.Nbd2 a6

8.0-0 Nc6 9.a3 h6 10.h3 Be6 11.Ne4 Qd7 12.Qd2 Rfe8 13.a4.

8.0-0 Nc6 9.h3 Bf5 10.e4 Be6 11.a3 Qd7 12.d4 ed4 13.Nd4.

8.a3 Nc6 9.0-0 h6 10.h3 Be6 11.Ne4 Qd7 12.Qd2 Rfe8 13.Rfd1.

8.a3 Nc6 9.h3 Be6 10.Ng5 Bd7 11.0-0 h6 12.Ngf3 b5 13.c4.

8.c3 Nc6 9.h3 Be6 10.0-0 h6 11.a3 b5 12.Qc2 Qb8 13.d4.

8.c4 Nc6 9.0-0 Qd7 10.h3 Bf5 11.a3 h6 12.Qc2 Bg6 13.Bc3.

8.c4 Nc6 9.0-0 h6 10.h3 Bf5 11.e4 Be6 12.b5 ab5 13.cb5.

8.d4 Nc6 9.0-0 ed4 10.Nd4 Be2 11.Qe2 Nb4 12.a3 Nc6 13.Qd3.

8.d4 Nc6 9.0-0 e4 10.d5 ef3 11.gf3 Bh3 12.dc6 bc6 13.Re1.

8.h3 Be6 9.0-0 Nc6 10.a3 h6 11.Ne4 b6 12.Qd2 Qd7 13.Rfd1.

8.h3 Be6 9.0-0 h6 10.e4 Nc6 11.d4 ed4 12.Nd4 Nd4 13.Bd4.

7.Nbd2 Nc6

8.a3 b5 9.c4 Qb8 10.0-0 bc4 11.Nc4 Bd7 12.d4 e4 13.Nfe5.

8.b5 Na5 9.0-0 h6 10.h3 Be6 11.c4 a6 12.a4 c6 13.Qc2.

8.b5 Na5 9.0-0 h6 10.h3 Be6 11.c4 a6 12.a4 c6 13.e4.

8.c3 Qd7 9.h3 Be6 10.b5 Nd8 11.Qa4 a6 12.c4 Qc8 13.Qc2.

8.h3 Bd7 9.c3 h6 10.0-0 a6 11.Qc2 d5 12.a3 Bf5 13.c4.

8.h3 Bf3 9.Nf3 Nb4 10.c3 Nc6 11.0-0 Qd7 12.Qb3 h6 13.c4.

7.Nbd2 Qd7

8.0-0 Nc6 9.b5 Nb4 10.c4 Qf5 11.Qb3 d5 12.cd5 Bf3 13.Nf3.

8.0-0 Nc6 9.b5 Nb4 10.c4 Qf5 11.e4 Qf4 12.a3 Nd3 13.Bd3.

8.a3 Nc6 9.0-0 h6 10.b5 Na5 11.Rb1 Be6 12.Bc3 b6 13.e4.

8.c3 Nc6 9.h3 Be6 10.b5 Nd8 11.c4 a6 12.a4 Bf5 13.g4.

8.c4 a6 9.0-0 Nc6 10.h3 Bf5 11.a3 h6 12.Qc2 Bg6 13.Rfd1.

8.c4 a6 9.h3 Be6 10.0-0 Nc6 11.a3 h6 12.Qc2 Bf5 13.e4.

8.Ne4 Nc6 9.0-0 Bf5 10.b5 Na5 11.Nc3 a6 12.a4 h6 13.Qd2.

8.h3 Be6 9.c3 a5 10.a3 ab4 11.ab4 Nc6 12.0-0 h6 13.b5.

7.Nbd2 Nbd7

8.0-0 a5 9.h3 Be6 10.ba5 Ra5 11.Nb3 Ra4 12.Ng5 Bd5 13.e4.

8.a3 Nb6 9.0-0 Na4 10.Qc1 h6 11.h3 Be6 12.e4 Nh5 13.d4.

8.Nb3 Nb6 9.h3 Bd7 10.0-0 Na4 11.Qc1 h6 12.c4 Nb2 13.Qb2.

8.c3 a5 9.0-0 ab4 10.cb4 Nd5 11.a3 N7f6 12.Qc2 Qd7 13.d4.

8.e4 c5 9.bc5 Nc5 10.0-0 Na4 11.Qb1 h6 12.d4 Qb6 13.Nc4.

8.h3 Be6 9.Ng5 c5 10.a3 cb4 11.Ne6 fe6 12.ab4 Qb6 13.c3.

8.h3 Bh5 9.Nh2 Be2 10.Qe2 Nd5 (10...d5 11.a3+=) 11.a3= a5 12.Qf3 c6 13.c4 N5f6 14.0-0 Qb6 15.c5 (15.Bc3 ab4 16.Bb4 Qc7=) 15...dc5+= 16.Nc4 Qb5 17.ba5 e4 18.Qe2 (18.de4 Qc4 Deflection) 18...ed3 19.Qd3 Ra5 (19...Rad8 20.Qc2=) 20.Rab1 Qa6 21.Qc3 (better is 21.Bf6 Nf6 22.Rb6+=) 21...Ra4–/+ 22.Rbc1 (22.Nd2 b5–/+) 22...Ne4 1–0. Torres,Douglas D S (2070) – Amorim,Jorge Luiz D F, IRT Verao, 2009.

7.Nbd2 h6

8.0-0 Nc6 9.b5 Na5 10.h3 Be6 11.a4 c6 12.e4 c5 13.c4.

8.0-0 Nc6 9.h3 Be6 10.b5 Na5 11.c4 a6 12.a4 c6 13.e4.

8.a3 a5 9.0-0 ab4 10.ab4 Nc6 11.Ra8 Qa8 12.b5 Nb4 13.Nc4.

8.c3 a5 9.h3 Be6 10.b5 c6 11.a4 Qb6 12.Nc4 Bc4 13.dc4.

8.Nc4 b5 9.Na5 Na6 10.c3 c5 11.a4 cb4 12.Nc6 Qe8 13.ab5.

8.Ne4 Nc6 9.b5 Nb4 10.0-0 a5 11.Nf6 Bf6 12.c4 Re8 13.h3.

8.h3 Be6 9.0-0 Qd7 10.c4 a6 11.Qb3 Nc6 12.d4 ed4 13.Nd4.

8.h3 Be6 9.0-0 Qd7 10.c4 a6 11.Qc2 Nc6 12.a3 Bf5 13.e4.

7.h3 Bc8

8.0-0 a6 9.Nc3 Nc6 10.a3 h6 11.Qd2 Be6 12.d4 e4 13.d5.

8.0-0 a6 9.Nc3 Nc6 10.a3 h6 11.Qd2 Be6 12.e4 Qd7 13.d4.

8.Nc3 a6 9.0-0 Nc6 10.a3 h6 11.Qd2 Be6 12.e4 Nd4 13.a4.

8.Nc3 h6 9.0-0 Nc6 10.b5 Na5 11.Qd2 a6 12.ba6 b6 13.a7.

8.Qd2 e4 9.de4 Ne4 10.Qd3 d5 11.a3 Nc6 12.Nc3 Bf6 13.b5.

8.Nbd2 a6 9.0-0 Nc6 10.c3 h6 11.Qc2 Be6 12.d4 ed4 13.Nd4.

8.Nbd2 Bf5 9.0-0 Na6 10.c3 c5 11.e4 Be6 12.b5 Nc7 13.d4.

7.h3 Bd7

8.0-0 Na6 9.Qd2 e4 10.de4 Ne4 11.Qd5 Bc6 12.Qa5 d5 13.Ba6.

8.0-0 Na6 9.Qd2 h6 10.e4 c5 11.bc5 Nc5 12.Nc3 Bc6 13.Qe3.

8.a3 a5 9.Nc3 ab4 10.ab4 Nc6 11.Ra8 Qa8 12.b5 Nb4 13.0-0.

8.Nc3 Na6 9.b5 Nb4 10.0-0 a6 11.a3 Nbd5 12.Nd5 Nd5 13.c4.

8.Nc3 Na6 9.b5 Nc5 10.0-0 a6 11.d4 ed4 12.ed4 Nce4 13.ba6.

8.c4 Na6 9.a3 c5 10.b5 Nc7 11.Nc3 a6 12.a4 Ne6 13.0-0.

8.Qd2 a5 9.b5 Bb5 10.Nc3 Bd7 11.0-0 Nc6 12.Rab1 h6 13.Ba3.

8.Qd2 h6 9.0-0 Na6 10.e4 c5 11.bc5 Nc5 12.Nc3 b5 13.Ba3.

8.Nbd2 a5 9.ba5 Nc6 10.0-0 Ra5 11.c4 Qa8 12.a4 Nd8 13.Bc3.

8.Nbd2 a5 9.ba5 Nc6 10.0-0 Ra5 11.c4 Qa8 12.Qc2 h6 13.Bc3.

7.h3 Be6

8.0-0 a6 9.Nc3 Nc6 10.a3 h6 11.Qd2 Re8 12.Ne4 Qd7 13.c4.

8.0-0 Na6 9.b5 Nc5 10.Nc3 Qd7 11.Ba3 e4 12.Nd4 d5 13.Qd2.

8.Nc3 Na6 9.b5 Nb4 10.e4 d5 11.a3 d4 12.Na4 Na2 13.Ng5.

8.Nc3 h6 9.0-0 a6 10.e4 Nc6 11.d4 d5 12.ed5 Nd5 13.Nd5.

8.Qd2 Na6 9.0-0 Qd7 10.c4 h6 11.a3 c6 12.Nc3 Nc7 13.e4.

7.h3 Bf5

8.0-0 a6 9.e4 Be6 10.Nc3 Nc6 11.d4 ed4 12.Nd4 Nb4 13.Qd2.

8.Na3 Qd7 9.0-0 Qa4 10.e4 Bd7 11.b5 Be6 12.Ng5 Nbd7 13.c3.

7.h3 Bf5 8.Nc3 Na6 9.b5 Nc5 10.d4 Nce4 11.Ne4 Ne4 12.de5 de5 13.0-0.

8.Nc3 h6 9.0-0 Nc6 10.b5 Na5 11.Qd2 a6 12.e4 Be6 13.a4.

8.Qd2 a6 9.Nc3 Nc6 10.e4 Be6 11.a3 d5 12.Ng5 de4 13.Ne6.

8.Qd2 Qd7 9.Nc3 Na6 10.Ba3 e4 11.Nd4 d5 12.g4 ed3 13.cd3.

8.Nbd2 h6 9.0-0 Na6 10.c3 c5 11.e4 Be6 12.b5 Nc7 13.d4.

8.e4 Be6 9.0-0 Qd7 10.Nbd2 a5 11.d4 ed4 12.b5 c5 13.bc6.

7.h3 Bh5

8.0-0 a6 9.a3 Nc6 10.Nc3 h6 11.Rc1 Qe8 12.Ra1 Qd8 13.Re1.

8.0-0 Nc6 9.b5 Nb4 10.Nc3 a6 11.a3 Nbd5 12.Nd5 Nd5 13.c4.

8.a3 a5 9.b5 c6 10.Nc3 Qb6 11.a4 Na6 12.0-0 Nb4 13.Qd2.

8.b5 a6 9.a4 ab5 10.ab5 Ra1 11.Ba1 c6 12.bc6 Nc6 13.0-0.

8.b5 a6 9.Nc3 ab5 10.Nb5 c6 11.Nc3 Na6 12.0-0 Nb4 13.a3.

8.Nc3 Na6 9.a3 c5 10.b5 Nc7 11.0-0 Ne6 12.a4 Qa5 13.Qd2.

8.Nc3 Na6 9.a3 c5 10.g4 Bg6 11.g5 Nd7 12.b5 Nc7 13.h4.

8.Qd2 a5 9.b5 Nbd7 10.0-0 Nc5 11.Nc3 Qd7 12.Ba3 Ne6 13.Rfe1.

8.Qd2 a5 9.b5 Nbd7 10.Nc3 a4 11.Ba3 h6 12.e4 Nb6 13.Bb2.

8.Nbd2 Nc6 9.b5 Nb4 10.0-0 a6 11.a3 Nbd5 12.c4 Nb6 13.a4.

6.Be2 a6

7.0-0 Bd7 8.Nc3 (8.Qd2 Nc6 9.e4 0-0 10.a3 Be6 11.Ng5 a5 12.Ne6 fe6 13.Nc3; 8.a3 Nc6 9.Nbd2 0-0 10.c4 Bf5 11.h3 Qd7 12.e4 Bg6 13.Nh4; 8.c4 Nc6 9.Nc3 0-0 10.Qb3 h6 11.h3 Bf5 12.Nd2 Qd7 13.Nde4) 8...Nc6 9.a3 0-0 10.Qd2 h6 11.h3 d5 12.d4 e4 13.Ne5.

7.0-0 Bf5 8.e4 (8.Na3 Nc6 9.Qd2 0-0 10.Nc4 b5 11.e4 Be6 12.Ne3 a5 13.a4; 8.Qd2 Nc6 9.e4 Be6 10.a3 0-0 11.c4 Bg4 12.Nc3 Bf3 13.Bf3; 8.Nbd2 Nc6 9.e4 Bd7 10.Nc4 Nb4 11.Qd2 Nc6 12.a4 Be6 13.Qe3) 8...Be6 9.d4 Ne4 10.de5 de5 11.Ne5 Bb4 12.Qd8 Kd8 13.Rd1.

7.a3 a5 8.h3 (8.Nc3 ab4 9.ab4 Nc6 10.h3 Bf5 11.Ra8 Qa8 12.b5 Nb4 13.0-0; 8.b5 0-0 9.h3 Be6 10.Ng5 Bf5 11.Nc3 h6 12.e4 Bg6 13.Nf3; 8.Nbd2 ab4 9.ab4 Nc6 10.h3 Bf5 11.b5 Nb4 12.e4 Ra1 13.Ba1; 8.0-0 ab4 9.ab4 Ra1 10.Ba1 0-0 11.h3 Be6 12.Nc3 Na6 13.Qb1) 8...Be6 9.Nc3 0-0 10.Ng5 ab4 11.ab4 Na6 12.b5 Nc5 13.Ne6.

7.a3 b5 8.Nc3 (8.Ng5 Be2 9.Qe2 h6 10.Nf3 Nc6 11.0-0 0-0 12.e4 Qd7 13.Nc3; 8.h3 Bd7 9.Nc3 Nc6 10.d4 ed4 11.Nd4 0-0 12.0-0 Ne5 13.e4; 8.0-0 Nc6 9.h3 Be6 10.Nc3 0-0 11.Ng5 Bf5 12.Qd2 h6 13.Bf3; 8.Qd2 Nc6 9.Nc3 h6 10.h3 Be6 11.0-0 0-0 12.a4 ba4 13.Ra4; 8.Nbd2 Nc6 9.h3 Bd7 10.0-0 0-0 11.d4 e4 12.Nh2 d5 13.Ng4; 8.Nfd2 Qd7 9.Bg4 Ng4 10.h3 Nf6 11.0-0 Nc6 12.Ne4 Ne4 13.de4; 8.c4 0-0 9.h3 Bf5 10.Nc3 bc4 11.dc4 a5 12.Nh4 Be6 13.0-0; 8.e4 Nc6 9.Nc3 0-0 10.0-0 Qd7 11.Nd5 a5 12.Qd2 Be6 13.Ne7; 8.h4 Nc6 9.Nc3 0-0 10.0-0 h6 11.d4 e4 12.Nd2 Bf5 13.Nb3) 8...Nc6 9.h3 Bf5 10.0-0 0-0 11.e4 Be6 12.d4 ed4 13.Nd4.

7.a3 Bd7 8.0-0 (8.Nc3 Nc6 9.0-0 0-0 10.Qd2 h6 11.h3 d5 12.d4 e4 13.Ne5; 8.Qd2 Nc6 9.0-0 0-0 10.e4 h6 11.h3 Be6 12.Nc3 a5 13.b5; 8.h3 Nc6 9.Nc3 0-0 10.Qd2 d5 11.0-0 Bd6 12.e4 d4 13.Nd5; 8.Nbd2 Nc6 9.0-0 0-0 10.h3 h6 11.c4 Qc8 12.Qc2 Bf5 13.e4; 8.h4 Nc6 9.c4 0-0 10.Nc3 h6 11.0-0 Ng4 12.h5 Bf5 13.Qd2; 8.c4 Nc6 9.0-0 0-0 10.Nc3 h6 11.h3 Be6 12.d4 ed4 13.Nd4; 8.e4 0-0 9.0-0 Nc6 10.Qd2 Be6 11.Nc3 d5 12.ed5 Nd5 13.Ne4; 8.Qc1 Nc6 9.0-0 0-0 10.Nc3 d5 11.Qd2 Bd6 12.Na4 b6 13.c4) 8...Nc6 9.Nc3 0-0 10.Qd2 h6 11.h3 d5 12.d4 e4 13.Ne5.

7.a3 Bf5 8.0-0 (8.Nc3 Nc6 9.e4 Bg6 10.Nd5 0-0 11.0-0 Qd7 12.h3 h6 13.Qd2; 8.e4 Bg6 9.Nc3 Nc6 10.0-0 0-0 11.Nd5 h6 12.Qd2 Qd7 13.h3; 8.Qd2 0-0 9.e4 Be6 10.0-0 Nc6 11.Nc3 d5 12.ed5 Nd5 13.Ne4; 8.Nbd2 0-0 9.e4 Bg6 10.0-0 Nc6 11.Nh4 d5 12.Ng6 hg6 13.ed5; 8.h3 0-0 9.Nbd2 Nc6 10.0-0 Qd7 11.e4 Be6 12.Re1 Rfd8 13.Ng5) 8...Nc6 9.e4 Bg6 10.Nbd2 0-0 11.Nc4 b5 12.Ne3 Qd7 13.Qd2.

7.a3 g6 8.h3 (8.0-0 Nc6 9.h3 Bd7 10.c4 0-0 11.Nc3 Bf5 12.Qb3 Qd7 13.Ng5; 8.Nc3 Nc6 9.h3 Bd7 10.0-0 0-0 11.Qd2 d5 12.d4 e4 13.Ne5; 8.Ng5 Nc6 9.Nc3 Be2 10.Qe2 0-0 11.0-0 d5 12.h3 Re8 13.Qd2; 8.Nbd2 Nc6 9.0-0 0-0 10.h3 Be6 11.c4 Qd7 12.Qc2 h6 13.d4; 8.Qd2 Nc6 9.0-0 0-0 10.h3 Bd7 11.e4 Be6 12.c4 Qd7 13.Nc3) 8...Bf5 9.0-0 Nc6 10.e4 Bd7 11.Nc3 0-0 12.d4 ed4 13.Nd4.

7.a3 h5 8.h3 (8.0-0 Nc6 9.h3 Bd7 10.c4 0-0 11.Nc3 Bf5 12.d4 ed4 13.Nd4; 8.Nc3 Nc6 9.h3 Bd7 10.0-0 0-0 11.Re1 d5 12.d4 e4 13.Ne5; 8.Nbd2 Nc6 9.h3 Bd7 10.0-0 0-0 11.d4 ed4 12.Nd4 Nd4 13.Bd4; 8.d4 e4 9.Ng5 Be2 10.Qe2 d5 11.Nc3 0-0 12.f3 ef3 13.Nf3) 8...Bf5 9.Nc3 Nc6 10.e4 Bh7 11.Nd5 0-0 12.0-0 Qd7 13.Ne7.

7.c3 0-0 8.h3 (8.0-0 a5 9.b5 Nbd7 10.Nbd2 Nc5 11.h3 Bf5 12.d4 Nd3 13.Qc2; 8.Nbd2 Nc6 9.h3 Bd7 10.0-0 g6 11.a3 b5 12.d4 Qb8 13.e4) 8...Bf5 9.0-0 Nc6 10.e4 Bd7 11.Nbd2 h6 12.Nc4 b5 13.Ne3.

7.c3 a5 8.h3 (8.0-0 0-0 9.b5 Nbd7 10.Nbd2 h6 11.h3 Bf5 12.e4 Bh7 13.Nc4; 8.b5 0-0 9.h3 Bf5 10.Nbd2 Qe8 11.d4 e4 12.Nh2 a4 13.Ba3; 8.Nbd2 ab4 9.cb4 0-0 10.h3 Bf5 11.0-0 Nbd7 12.e4 Be6 13.d4; 8.a3 ab4 9.cb4 0-0 10.0-0 Nc6 11.b5 Na5 12.Nc3 Qd7 13.h3; 8.Na3 ab4 9.cb4 Nc6 10.b5 Na5 11.0-0 0-0 12.Qc2 c5 13.bc6; 8.Qa4 Nbd7 9.Qb5 Qc8 10.Na3 c6 11.Qc4 a4 12.h3 d5 13.Qg4) 8...Bf5 9.b5 0-0 10.0-0 Nbd7 11.Nbd2 Nc5 12.d4 Nd3 13.Qc2.

7.c3 Nc6 8.h3 (8.0-0 h6 9.Nbd2 0-0 10.h3 Be6 11.a3 Qd7 12.c4 Rfe8 13.Qc2; 8.Nbd2 0-0 9.h3 Bf5 10.e4 Bd7 11.0-0 Nh5 12.Nc4 Nf4 13.a4; 8.Qc2 0-0 9.Nbd2 d5 10.h3 Bf5 11.0-0 h6 12.e4 Bg6 13.Rfe1; 8.Na3 0-0 9.h3 Be6 10.0-0 h6 11.Nc4 b5 12.Ncd2 a5 13.a3) 8...Be6 9.0-0 0-0 10.Nbd2 h6 11.a3 Re8 12.c4 Qd7 13.Qc2.

7.c3 Qc8 8.h3 (8.Nbd2 Nc6 9.h3 Be6 10.0-0 0-0 11.Ng5 Bf5 12.e4 Bd7 13.Ngf3; 8.0-0 Nc6 9.Nbd2 0-0 10.h3 Be6 11.a3 h6 12.Qc2 Qd7 13.c4; 8.Qc2 Nc6 9.Nbd2 0-0 10.0-0 Qd7 11.h3 Bh5 12.Ne4 Bg6 13.Nh4; 8.Qb3 Nc6 9.Nbd2 0-0 10.0-0 a5 11.b5 a4 12.Qc2 a3 13.Bc1; 8.Na3 Nc6 9.0-0 0-0 10.h3 Be6 11.Ng5 d5 12.Ne6 Qe6 13.Qd2; 8.Qa4 Qd7 9.Qc2 Nc6 10.0-0 0-0 11.Nbd2 d5 12.h3 Bh5 13.a3; 8.e4 a5 9.b5 0-0 10.h3 Be6 11.0-0 Qe8 12.c4 Nbd7 13.Nc3) 8...Bf5 9.e4 Be6 10.0-0 0-0 11.Nbd2 Nc6 12.d4 ed4 13.Nd4.

7.c3 Bd7 8.0-0 (8.Nbd2 0-0 9.0-0 Nc6 10.Qc2 Re8 11.a3 h6 12.d4 Bf8 13.de5; 8.h3 0-0 9.Nbd2 a5 10.a3 ab4 11.ab4 Nc6 12.0-0 Ra1 13.Qa1; 8.Qb3 Nc6 9.Nbd2 Be6 10.c4 0-0 11.0-0 h6 12.h3 b6 13.a3; 8.Qc2 0-0 9.0-0 a5 10.a3 b5 11.Nbd2 Nc6 12.a4 Qb8 13.d4; 8.a3 0-0 9.0-0 Nc6 10.Nbd2 Bf5 11.e4 Bg6 12.Nh4 d5 13.h3; 8.a4 Nc6 9.0-0 0-0 10.Nbd2 Nd5 11.h3 h6 12.Qc2 Re8 13.Nc4; 8.Na3 Nc6 9.0-0 0-0 10.e4 d5 11.ed5 Nd5 12.Nc4 f6 13.Qc2) 8...Nc6 9.Nbd2 0-0 10.Qc2 h6 11.d4 ed4 12.ed4 d5 13.Rfe1.

7.c3 Nbd7 8.Nbd2 (8.h3 Be6 9.Nbd2 0-0 10.0-0 h6 11.Qc2 c6 12.d4 Qc7 13.c4; 8.0-0 0-0 9.Nbd2 h6 10.h3 Be6 11.Qc2 c6 12.d4 Qc7 13.c4; 8.Na3 0-0 9.0-0 d5 10.h3 Bf5 11.c4 Bb4 12.Qb3 Bd6 13.cd5; 8.a3 0-0 9.Nbd2 Nb6 10.0-0 Bd7 11.d4 e4 12.Ne1 d5 13.Qb3) 8...0-0 9.0-0 d5 10.h3 Bf5 11.Qc2 a5 12.e4 Bg6 13.b5.

7.c3 Be6 8.Ng5 (8.Nbd2 0-0 9.Qc2 Nc6 10.0-0 h6 11.d4 ed4 12.Nd4 Nd4 13.ed4; 8.Na3 Nc6 9.Ng5 Bd7 10.0-0 0-0 11.Qb3 h6 12.Ne4 Be6 13.c4; 8.Qc2 Nc6 9.Nbd2 0-0 10.0-0 h6 11.d4 ed4 12.Nd4 Nd4 13.ed4; 8.0-0 0-0 9.Ng5 Bf5 10.e4 Bd7 11.Nd2 h6 12.Ngf3 Nc6 13.Qc2; 8.d4 Nc6 9.Nbd2 0-0 10.0-0 ed4 11.ed4 Re8 12.g3 Qd7 13.Re1) 8...Bf5 9.Nd2 0-0 10.e4 Bd7 11.0-0 Nc6 12.Ngf3 h6 13.Qc2.

7.c3 Bf5 8.e4 (8.0-0 Nc6 9.e4 Be6 10.Nbd2 0-0 11.d4 ed4 12.Nd4 Nd4 13.cd4; 8.Nbd2 Nc6 9.0-0 0-0 10.e4 Bd7 11.d4 ed4 12.Nd4 d5 13.Nc6; 8.Na3 Nc6 9.0-0 d5 10.c4 Bb4 11.Nc2 e4 12.de4 de4 13.Nfd4; 8.Qc2 Nc6 9.0-0 0-0 10.e4 Bd7 11.Nbd2 d5 12.a3 h6 13.d4; 8.d4 e4 9.Nfd2 Nc6 10.0-0 0-0 11.Nb3 Nd5 12.N1d2 Bf6 13.a3; 8.h3 Nc6 9.0-0 d5 10.Qc2 0-0 11.Nbd2 h6 12.e4 Bg6 13.Rfe1) 8...Be6 9.Ng5 Bd7 10.Nd2 0-0 11.0-0 Nc6 12.h3 h6 13.Ngf3.

7.c3 h6 8.h3 (8.0-0 0-0 9.Nbd2 Be6 10.Qc2 Nc6 11.d4 ed4 12.Nd4 Nd4 13.ed4; 8.Nbd2 0-0 9.0-0 Be6 10.Qc2 Nc6 11.d4 ed4 12.Nd4 Nd4 13.ed4; 8.Qc2 Nc6 9.h3 Be6 10.0-0 0-0 11.Nbd2 d5 12.d4 e4 13.Ne5; 8.Qb3 Nc6 9.Nbd2 0-0 10.0-0 d5 11.h3 Be6 12.a4 Re8 13.b5; 8.e4 Nc6 9.Nbd2 0-0 10.0-0 d5 11.h3 Be6 12.Qc2 Qd7 13.a4) 8...Be6 9.Nbd2 Nc6 10.0-0 0-0 11.a3 Qd7 12.c4 Rfe8 13.Qc2.

7.Nc3 h5 8.h3 Bf5 9.e4 Bd7 10.d4 ed4 11.Nd4 Nc6 12.0-0 0-0 13.a3.

7.c4 A) 7...Nc6 8.Qb3 (8.Nc3 Nb4 9.h3 Bd7 10.Qb3 c5 11.a3 Nc6 12.0-0 0-0 13.Rab1; 8.0-0 0-0 9.a3 h6 10.h3 Bf5 11.Nc3 Qd7 12.Nd5 Be6 13.Ne7; 8.a3 g6 9.h3 Bf5 10.0-0 Kf8 11.Nc3 Kg7 12.e4 Bd7 13.d4; 8.h3 Be6 9.0-0 Nb4 10.Qb3 c5 11.Ng5 Bd7 12.a3 Nc6 13.Nc3; 8.Nbd2 0-0 9.Qb3 h6 10.0-0 Bf5 11.e4 Bg6 12.b5 Na5 13.Qc2; 8.b5 ab5 9.cb5 Nb4 10.Qb3 Nbd5 11.Nc3 Nc3 12.Bc3 Be6 13.Qc2) 8...0-0 9.Nc3 Qd7 10.0-0 h6 11.h3 Bf5 12.Nd5 Rfd8 13.Bc3; B) 7...Bf5 8.e4 (8.h3 a5 9.b5 Nbd7 10.Nc3 0-0 11.d4 ed4 12.Nd4 Bg6 13.0-0; 8.0-0 Nc6 9.b5 Na5 10.e4 Bg6 11.Nc3 0-0 12.Nh4 ab5 13.cb5; 8.a3 Nc6 9.Nc3 0-0 10.0-0 Qd7 11.h3 h5 12.e4 Bg6 13.Nd5; 8.Nc3 Nc6 9.b5 Na5 10.0-0 0-0 11.e4 Be6 12.a4 c6 13.Ng5; 8.Qb3 Nc6 9.Nc3 0-0 10.0-0 Qd7 11.Nd5 Rfe8 12.h3 h6 13.d4; 8.Nbd2 Nc6 9.b5 Na5 10.e4 Bg6 11.0-0 0-0 12.Nh4 ab5 13.Ng6; 8.Qa4 Nc6 9.Nc3 0-0 10.0-0 Qd7 11.e4 Be6 12.Qb3 h6 13.h3) 8...Be6 9.Nc3 0-0 10.0-0 Nc6 11.a3 h6 12.d4 Bg4 13.Nd5; C) 7...h5 8.h3 (8.Nc3 Nc6 9.h3 Bf5 10.0-0 0-0 11.e4 Bd7 12.Qb3 Rb8 13.Nd5; 8.0-0 Nc6 9.Nc3 0-0 10.h3 Be6 11.a3 Qd7 12.Ng5 Bf5 13.Bf3; 8.Qb3 Nc6 9.Nc3 0-0 10.0-0 Qd7 11.h3 Bf5 12.Nd5 Rfe8 13.a3; 8.a3 Nc6 9.Nc3 Bf5 10.0-0 0-0 11.h3 Qc8 12.e4 Be6 13.d4; 8.Qa4 Nc6 9.Nc3 0-0 10.h3 Bf5 11.0-0 Qd7 12.e4 Be6 13.Qb3) 8...Bf5 9.Nc3 Nc6 10.0-0 0-0 11.e4 Bd7 12.Qb3 Be6 13.Rad1; D) 7...h6 8.h3 (8.Qb3 Nc6 9.0-0 0-0 10.Nc3 Be6 11.Nd5 Re8 12.h3 Qd7 13.Bc3; 8.a3 0-0 9.h3 Be6 10.0-0 a5 11.Nc3 ab4 12.ab4 Nc6 13.Ra8; 8.Nbd2 Nc6 9.h3 Bf5 10.b5 ab5 11.cb5 Na5 12.0-0 0-0 13.e4; 8.Nc3 0-0 9.0-0 Nc6 10.Qb3 Re8 11.h3 Bf5 12.Nd5 Qd7 13.d4; 8.0-0 Nc6 9.Nc3 0-0 10.Qb3 Bf5 11.h3 Qe8 12.e4 Be6 13.Rad1; 8.Qa4 Nc6 9.Nc3 0-0 10.h3 Be6 11.0-0 d5 12.cd5 Nd5 13.a3) 8...Be6 9.a3 Nc6 10.Nbd2 0-0 11.0-0 Qd7 12.Qc2 Rfe8 13.d4; E) 7...Be6 8.Nc3 (8.d4 ed4 9.Nd4 Nc6 10.Nc3 Nd4 11.ed4 a5 12.b5 d5 13.c5; 8.Qa4 Nc6 9.Nc3 0-0 10.a3 d5 11.cd5 Nd5 12.0-0 Qd7 13.Qc2; 8.0-0 0-0 9.d4 ed4 10.Nd4 Nc6 11.Ne6 fe6 12.Nc3 Nb4 13.Qb3; 8.a3 Nc6 9.Nbd2 0-0 10.0-0 Qd7 11.h3 h6 12.Qc2 Rfe8 13.d4; 8.Ng5 Bd7 9.Nc3 Nc6 10.Qb3 0-0 11.0-0 Bf5 12.Nge4 Qd7 13.Nf6; 8.Qb3 Nc6 9.Nbd2 0-0 10.0-0 h6 11.h3 Re8 12.d4 ed4 13.Nd4; 8.Nbd2 0-0 9.a3 Nc6 10.0-0 Re8 11.Qc2 h6 12.h3 Qd7 13.d4; 8.h3 Nc6 9.a3 0-0 10.0-0 Bf5 11.Nbd2 Qd7 12.Qc2 h6 13.e4 ; 8.Bc3 Nc6 9.0-0 0-0 10.Nbd2 Qd7 11.Qb3 h6 12.h3 Bf5 13.Nh4) 8...0-0 9.Ng5 Nc6 10.Ne6 fe6 11.a3 d5 12.0-0 Qd7 13.cd5; F) 7...0-0 8.Nc3 (8.0-0 Nc6 9.a3 Qd7 10.h3 Bf5 11.Nc3 h6 12.Nd5 e4 13.de4; 8.a3 a5 9.h3 Bf5 10.g4 Be6 11.Nc3 h6 12.0-0 Nbd7 13.Qc2; 8.Nbd2 Nc6 9.Qb3 Qd7 10.0-0 Rfe8 11.h3 Bf5 12.d4 ed4 13.Nd4; 8.h3 Bf5 9.0-0 Nc6 10.e4 Be6 11.a3 Qd7 12.Qd2 Nh5 13.Nc3) 8...Nc6 9.Qb3 a5 10.b5 a4 11.Na4 Na5 12.Qc2 c6 13.Nc3.

7.Nbd2 Qd7 8.h3 (8.0-0 Nc6 9.h3 Be6 10.a3 0-0 11.c4 h6 12.Qc2 Rfd8 13.Bc3; 8.a3 0-0 9.h3 Bf5 10.e4 Be6 11.d4 ed4 12.Nd4 Nc6 13.0-0; 8.c3 Nc6 9.h3 Be6 10.Ng5 0-0 11.Ne6 Qe6 12.0-0 d5 13.Qc2; 8.c4 Nc6 9.0-0 0-0 10.h3 Bf5 11.a3 g6 12.Qc2 Rfd8 13.e4) 8...Be6 9.d4 Nc6 10.0-0 0-0 11.de5 de5 12.Ne5 Ne5 13.Be5.

7.Nbd2 Bd7 8.Ne4 (8.a3 Nc6 9.h3 b5 10.d4 e4 11.d5 ef3 12.dc6 fe2 13.cd7; 8.0-0 Nc6 9.a3 0-0 10.h3 Qb8 11.c4 Qa7 12.Qc2 Bf5 13.b5; 8.h3 Nc6 9.a3 0-0 10.0-0 h6 11.c4 Be6 12.Qc2 Qd7 13.d4; 8.d4 ed4 9.Nd4 Nc6 10.0-0 0-0 11.Nc6 Bc6 12.Nb3 d5 13.Qd4; 8.c4 Nc6 9.0-0 0-0 10.a3 Bf5 11.h3 Qd7 12.e4 Bg6 13.Nh4; 8.c3 Nc6 9.0-0 0-0 10.d4 e4 11.Ng5 d5 12.c4 Nb4 13.cd5; 8.Nc4 Nc6 9.Qd2 Nd5 10.0-0 b5 11.e4 Nf4 12.Ne3 Nb4 13.d4; 8.e4 Nc6 9.0-0 0-0 10.a3 h6 11.h3 Re8 12.Nc4 Be6 13.Ne3) 8...Nc6 9.Qd2 Bf5 10.Nf6 Bf6 11.e4 Bg6 12.0-0 0-0 13.a4.

7.d4 A) 7...Nc6 8.Nc3 (8.a3 e4 9.Nfd2 Be2 10.Qe2 0-0 11.c4 Qd7 12.Nc3 Qf5 13.0-0; 8.h3 Bf5 9.a3 e4 10.Nh4 Bd7 11.d5 Ne5 12.0-0 0-0 13.Nc3; 8.Nbd2 0-0 9.0-0 ed4 10.Nd4 Be2 11.Qe2 Nb4 12.e4 Qd7 13.f4) 8...0-0 9.d5 Nb4 10.a3 c5 11.h3 Bf5 12.ab4 cb4 13.Na2; B) 7...Bf3 8.Bf3 (8.gf3 Nc6 9.a3 ed4 10.Bd4 Nd4 11.Qd4 0-0 12.Nc3 c5 13.Qd2) 8...e4 9.Be2 Nc6 10.a3 0-0 11.d5 Ne5 12.Nc3 Qd7 13.Qd4; C) 7...0-0 8.Nc3 e4 9.Nh4 Be2 10.Qe2 Qd7 11.g3 Nc6 12.0-0 Nb4 13.a3; D) 7...e4 8.Nfd2 Be2 9.Qe2 d5 10.a3 0-0 11.c4 a5 12.b5 Nbd7 13.cd5.

7.0-0 0-0

8.a3 Nc6 9.h3 Bf5 10.e4 Be6 11.c4 Nh5 12.Nc3 Nf4 13.Nd5.

8.a3 Nc6 9.h3 Bf5 10.e4 Be6 11.Nbd2 Qd7 12.c4 Nh5 13.b5.

8.c3 Nc6 9.h3 Be6 10.Nbd2 h6 11.a3 Qd7 12.c4 Bf5 13.Qc2.

8.Nc3 Nc6 9.h3 Bf5 10.e4 Bg6 11.a3 d5 12.Nh4 Nd4 13.Ng6.

8.c4 Nc6 9.a3 h6 10.h3 Bh5 11.Nc3 Bg6 12.Qc2 Qd7 13.Nd5.

8.Qd2 Nc6 9.h3 Bf3 10.Bf3 d5 11.a3 d4 12.Qe2 Re8 13.Nd2.

8.Nbd2 Nc6 9.a3 h6 10.h3 Be6 11.c4 Qd7 12.Qc2 Bf5 13.e4.

8.Nbd2 Nc6 9.h3 Bf5 10.a3 Qd7 11.e4 Be6 12.d4 ed4 13.Nd4.

8.h3 Be6 9.Nc3 Nc6 10.a3 h6 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1.

8.h3 Be6 9.Qd2 h6 10.Nc3 Nc6 11.d4 e4 12.d5 ef3 13.Bf3.

7.0-0 Nc6

8.a3 0-0 9.h3 Be6 10.c4 Bf5 11.e4 Be6 12.Nc3 h6 13.d4.

8.a3 0-0 9.h3 Be6 10.Qd2 h6 11.Nc3 Qb8 12.Ne4 Qa7 13.c4.

8.c3 0-0 9.h3 Be6 10.Nbd2 h6 11.Qc2 d5 12.d4 e4 13.Ne5.

8.Nc3 Nb4 9.a3 Nc6 10.h3 Bd7 11.d4 e4 12.Nd2 d5 13.Na2.

8.Nc3 Nb4 9.d4 ed4 10.Qd4 c5 11.Qf4 Qd7 12.h3 Be6 13.Ng5.

8.c4 Qd7 9.Nc3 0-0 10.a3 h6 11.Nd5 Be6 12.Ne7 Ne7 13.Qc2.

8.Qd2 0-0 9.h3 Bh5 10.a3 e4 11.Nd4 Be2 12.Nc6 bc6 13.Qe2.

8.Nbd2 0-0 9.h3 Be6 10.c4 Nb4 11.Qb3 Nc6 12.d4 ed4 13.Nd4.

8.Nbd2 0-0 9.h3 Bf5 10.e4 Be6 11.a3 Qd7 12.d4 ed4 13.Nd4.

8.h3 Be6 9.a3 0-0 10.c4 Qd7 11.Nbd2 Bf5 12.e4 Bg6 13.Nh4.

8.h3 Bf5 9.e4 Bd7 10.Qd2 0-0 11.a3 h6 12.Rd1 Be6 13.Nc3.

7.a3 0-0

8.0-0 Nc6 9.Nc3 h6 10.h3 Be6 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1.

8.0-0 Nc6 9.h3 Bf5 10.e4 Be6 11.Nbd2 Qd7 12.Re1 Rfd8 13.Ng5.

8.Nc3 Nc6 9.0-0 d5 10.d4 e4 11.Ne5 Be2 12.Ne2 Qd6 13.Qd2.

8.Nc3 Nc6 9.h3 Bf5 10.e4 Be6 11.0-0 a5 12.b5 Nd4 13.Nd4.

8.Qd2 a5 9.b5 Nbd7 10.Nc3 Nc5 11.0-0 Qd7 12.h3 Bf5 13.e4.

8.Qd2 a5 9.b5 e4 10.de4 Ne4 11.Qd4 Nf6 12.Nc3 Nbd7 13.h3.

8.Nbd2 Nc6 9.0-0 Qd7 10.h3 Bf5 11.e4 Be6 12.d4 ed4 13.Nd4.

8.Nbd2 Nc6 9.0-0 Qd7 10.h3 Bf5 11.e4 Be6 12.Re1 Rfd8 13.Ng5.

8.h3 Be6 9.Nc3 Nc6 10.0-0 h6 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1.

8.h3 Bf5 9.e4 Be6 10.0-0 Nc6 11.Nbd2 Qd7 12.Re1 Rfd8 13.Ng5.

7.a3 Nc6

8.0-0 0-0 9.Nc3 d5 10.h3 Bf5 11.Na4 Qd6 12.Nh4 Bc8 13.Nf3.

8.0-0 0-0 9.h3 Bf5 10.e4 Be6 11.Nbd2 Qd7 12.Re1 Rfd8 13.Ng5.

8.Nc3 0-0 9.0-0 d5 10.h3 Bf5 11.Na4 Bd6 12.c4 dc4 13.dc4.

8.Nc3 0-0 9.h3 Bf5 10.0-0 d5 11.Na4 Qd6 12.Nh4 Bc8 13.Nf3.

8.c4 Bf5 9.0-0 0-0 10.Nc3 h6 11.e4 Bg6 12.Nd5 Qd7 13.h3.

8.Qd2 0-0 9.Nc3 d5 10.h3 Bf5 11.0-0 Qd6 12.Na4 b6 13.Qc3.

8.Nbd2 0-0 9.0-0 Qd7 10.h3 Bf5 11.e4 Be6 12.Re1 Rfd8 13.Ng5.

8.Nbd2 0-0 9.0-0 h6 10.h3 Bf5 11.e4 Be6 12.d4 ed4 13.Nd4.

8.h3 Be6 9.Nc3 0-0 10.0-0 h6 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1.

8.h3 Bf5 9.0-0 0-0 10.e4 Be6 11.Nbd2 Qd7 12.Re1 Rfd8 13.Ng5.

8.h4 0-0 9.Nc3 Qd7 10.0-0 h6 11.e4 Rfe8 12.Nd5 Nd5 13.ed5.

7.a3 Qd7

7.a3 Qd7 8.0-0 0-0 9.h3 Bf5 10.Nc3 Nc6 11.e4 Be6 12.d4 ed4 13.Nd4.

7.a3 Qd7 8.0-0 0-0 9.h3 Bf5 10.e4 Be6 11.Nc3 Nc6 12.d4 ed4 13.Nd4.

7.a3 Qd7 8.Nc3 Nc6 9.0-0 0-0 10.h3 Be6 11.d4 ed4 12.Nd4 d5 13.Ne6.

7.a3 Qd7 8.Nc3 Nc6 9.h3 Be6 10.d4 ed4 11.Nd4 0-0 12.Ne6 Qe6 13.Bf3.

7.a3 Qd7 8.c4 Nc6 9.0-0 0-0 10.Nc3 h6 11.h3 Be6 12.Qd2 Rab8 13.d4.

7.a3 Qd7 8.Qd2 Nc6 9.h3 Bf5 10.e4 Be6 11.0-0 0-0 12.c4 h6 13.Nc3.

7.a3 Qd7 8.Nbd2 Nc6 9.h3 Bf5 10.e4 Be6 11.d4 ed4 12.Nd4 Nd4 13.Bd4.

7.a3 Qd7 8.h3 Be6 9.Nc3 0-0 10.d4 ed4 11.Nd4 Nc6 12.0-0 d5 13.Ne6.

7.a3 Qd7 8.h3 Be6 9.d4 Nc6 10.Nc3 ed4 11.Nd4 0-0 12.Ne6 fe6 13.0-0.

7.a3 h6

8.0-0 0-0 9.Nbd2 Be6 10.c4 Nc6 11.Qc2 Qd7 12.h3 Bf5 13.e4.

8.0-0 Nc6 9.h3 Bh5 10.Nbd2 0-0 11.e4 Bg6 12.Nc4 Qc8 13.Qd2.

8.Nc3 Nc6 9.0-0 0-0 10.h3 Be6 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1.

8.Nc3 Nc6 9.h3 Bd7 10.0-0 0-0 11.Qd2 Re8 12.Rfe1 Be6 13.Rad1.

8.c4 0-0 9.Nc3 Nc6 10.0-0 Qd7 11.Nd5 Be6 12.Ne7 Ne7 13.Qc2.

8.Qd2 Nc6 9.h3 Be6 10.0-0 0-0 11.Nc3 Qb8 12.Ne4 Qa7 13.c4.

8.Qd2 Nc6 9.h3 Be6 10.Nc3 0-0 11.0-0 Re8 12.Ne4 Qd7 13.Rfe1.

8.Nbd2 Nc6 9.h3 Bf5 10.e4 Be6 11.0-0 0-0 12.c4 Qd7 13.b5.

8.Nbd2 Be6 9.0-0 Nc6 10.c4 0-0 11.h3 Qd7 12.Qc2 Bf5 13.e4.

8.Nfd2 Be2 9.Qe2 Nc6 10.Nc3 0-0 11.0-0 d5 12.Nf3 Qd7 13.Rfe1.

8.e4 Nc6 9.0-0 0-0 10.Nc3 Qd7 11.Nd5 Nd5 12.ed5 Bf3 13.Bf3.

8.h3 Bd7 9.0-0 Nc6 10.Nbd2 0-0 11.c4 Bf5 12.Qc2 Qd7 13.e4.

8.h3 Be6 9.0-0 0-0 10.Nbd2 Nc6 11.c4 Qc8 12.Qc2 Rd8 13.b5.

8.h4 0-0 9.Nc3 Nc6 10.0-0 Qd7 11.e4 Bf3 12.Bf3 Nd4 13.a4.

7.Nc3 0-0

8.0-0 Nc6 9.h3 Be6 10.a3 h6 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1.

8.0-0 Nc6 9.h3 Bf5 10.e4 Bg6 11.a3 d5 12.ed5 Nd5 13.Ne4.

8.a3 Nc6 9.0-0 h6 10.Qd2 Re8 11.h3 Be6 12.Ne4 Qd7 13.Rfe1.

8.Qd2 Nc6 9.a3 d5 10.h3 Bf5 11.0-0 Qd7 12.Rfe1 Qd6 13.Rab1.

8.h3 Bd7 9.0-0 Nc6 10.a3 d5 11.Qd2 Bd6 12.e4 d4 13.Nd5.

8.h3 Bd7 9.0-0 Nc6 10.a3 h6 11.Qd2 Re8 12.Rfe1 Be6 13.Rad1.

7.Nc3 Nc6

8.0-0 Nb4 9.d4 ed4 10.Nd4 Be2 11.Qe2 0-0 12.e4 Qd7 13.Rad1.

8.0-0 Nb4 9.h3 Bd7 10.Rb1 0-0 11.Ba1 a5 12.a3 Nbd5 13.Nd5.

8.a3 0-0 9.0-0 h6 10.Qd2 Be6 11.e4 Nd4 12.Nd4 ed4 13.Nd5.

8.a3 0-0 9.h3 Bf5 10.e4 Be6 11.0-0 Nd4 12.Qd2 h6 13.a4.

8.d4 0-0 9.0-0 ed4 10.Nd4 Be2 11.Nce2 Nb4 12.a3 Nc6 13.Nc6.

8.d4 e4 9.Nd2 Be2 10.Qe2 d5 11.a3 0-0 12.0-0 Qd7 13.f3.

8.h3 Be6 9.a3 h6 10.0-0 0-0 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1.

8.h3 Bf5 9.e4 Bd7 10.a3 0-0 11.Nd5 h6 12.0-0 b5 13.Qd2.

7.Nc3 h6

8.0-0 Nc6 9.h3 Be6 10.e4 Nb4 11.d4 ed4 12.Nd4 Bd7 13.a3.

8.a3 Nc6 9.h3 Be6 10.0-0 0-0 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1.

8.Rb1 Nc6 9.0-0 0-0 10.a3 d5 11.d4 e4 12.Ne5 Bf5 13.Na4.

8.Qd2 Nc6 9.h3 Be6 10.a3 0-0 11.0-0 Re8 12.Ne4 Qd7 13.Rfe1.

8.d4 Nc6 9.h3 Bf5 10.0-0 0-0 11.d5 Nb4 12.a3 Nc2 13.Rc1.

8.e4 Nc6 9.h3 Bf3 10.Bf3 0-0 11.0-0 Nb4 12.Rb1 Qd7 13.Qd2.

8.h3 Bd7 9.0-0 0-0 10.Qd2 Nc6 11.Ne4 Re8 12.a4 a5 13.b5.

8.h3 Bf5 9.e4 Bd7 10.0-0 Nc6 11.d4 ed4 12.Nd4 Nb4 13.a3.

7.Nbd2 0-0

8.0-0 Nc6 9.h3 Be6 10.a3 Qd7 11.c4 Rad8 12.Qc2 h6 13.b5.

8.0-0 Nc6 9.h3 Bf5 10.a3 Qd7 11.e4 Be6 12.Re1 Rfd8 13.Ng5.

8.a3 Nc6 9.0-0 Qd7 10.h3 Bf5 11.e4 Be6 12.d4 ed4 13.Nd4.

8.a3 Nc6 9.0-0 Qd7 10.h3 Bf5 11.e4 Be6 12.Re1 Rfd8 13.Ng5.

8.c3 Nc6 9.h3 Be6 10.0-0 h6 11.a3 Rb8 12.c4 Qd7 13.Qc2.

8.c4 a5 9.h3 Be6 10.b5 Nbd7 11.0-0 Nc5 12.d4 ed4 13.Nd4.

8.c4 Nc6 9.0-0 Qd7 10.h3 Bh5 11.Qb3 h6 12.Ne4 Bg6 13.Nfd2.

8.h3 Be6 9.d4 Nc6 10.0-0 e4 11.Ng5 Bf5 12.g4 Bg6 13.h4.

8.h3 Bf5 9.e4 Be6 10.0-0 Nc6 11.a3 Qd7 12.Re1 Rfd8 13.Ng5.

7.Nbd2 Nc6

8.0-0 0-0 9.h3 Bf5 10.e4 Be6 11.c3 Qd7 12.Ng5 d5 13.Qb3.

8.0-0 Nb4 9.a3 Nc6 10.d4 ed4 11.Nd4 Be2 12.Qe2 Qd7 13.Qf3.

8.a3 0-0 9.0-0 Qd7 10.h3 Bf5 11.e4 Be6 12.d4 ed4 13.Nd4.

8.a3 0-0 9.0-0 Qd7 10.h3 Bf5 11.e4 Be6 12.Re1 Rfd8 13.Ng5.

8.c3 0-0 9.h3 Be6 10.0-0 h6 11.a3 Qd7 12.c4 Rac8 13.Qc2.

8.c4 0-0 9.Qb3 Qd7 10.0-0 h6 11.h3 Bf5 12.Rad1 Rfe8 13.Rfe1.

8.d4 0-0 9.a3 ed4 10.Nd4 Nd4 11.Bd4 Be2 12.Qe2 c5 13.bc5.

8.h3 Be6 9.0-0 0-0 10.a3 h6 11.c4 Qc8 12.Qc2 Qd7 13.d4.

8.h3 Bf5 9.0-0 0-0 10.e4 Be6 11.c3 d5 12.Ng5 Bc8 13.Qc2.

7.Nbd2 h6

8.0-0 Nc6 9.h3 Bd7 10.a3 0-0 11.c4 Re8 12.Qc2 Bf5 13.e4.

8.a3 0-0 9.h3 Be6 10.0-0 Nbd7 11.Nc4 c6 12.Qd2 Nb6 13.Nb6.

8.c4 Nc6 9.h3 Bf5 10.b5 Na5 11.e4 Bg6 12.0-0 ab5 13.cb5.

8.d4 e4 9.Nh4 Qd7 10.0-0 Be2 11.Qe2 g5 12.d5 gh4 13.Ne4.

8.e4 Nc6 9.h3 Be6 10.0-0 0-0 11.a3 b5 12.Nb3 Qd7 13.Qd2.

8.Ne4 Nc6 9.0-0 0-0 10.h3 Bf5 11.Nf6 Bf6 12.e4 Bg6 13.c3.

8.h3 Be6 9.0-0 0-0 10.a3 Nbd7 11.Nc4 c5 12.Rb1 b5 13.Na5.

8.h3 Be6 9.0-0 Nc6 10.d4 0-0 11.de5 de5 12.Ne5 Ne5 13.Be5.

7.h3 Bc8

8.0-0 Nc6 9.Nc3 0-0 10.a3 h6 11.Qd2 Bd7 12.Rfe1 Be6 13.e4.

8.0-0 Nc6 9.c4 Nb4 10.Qb3 a5 11.a3 Nc6 12.Nc3 0-0 13.d4.

8.a3 Nc6 9.0-0 0-0 10.Nc3 h6 11.Qd2 Be6 12.e4 Nd4 13.Nd4.

8.a3 Nc6 9.Nc3 0-0 10.Qd2 h6 11.0-0 Be6 12.Rad1 Re8 13.Rfe1.

8.Ba3 Nc6 9.Nc3 0-0 10.0-0 h6 11.Qd2 Be6 12.Rab1 d5 13.d4.

8.Na3 Nc6 9.0-0 0-0 10.Qd2 Nd5 11.b5 ab5 12.Nb5 Be6 13.a4.

8.c3 Nc6 9.Nbd2 0-0 10.0-0 h6 11.Qc2 Be6 12.d4 ed4 13.Nd4.

8.Nc3 Nc6 9.a3 0-0 10.0-0 h6 11.Qd2 Be6 12.d4 e4 13.d5.

8.Nc3 Nc6 9.a3 h6 10.0-0 0-0 11.Qd2 Be6 12.Rfd1 Re8 13.Ne4.

8.c4 Nc6 9.Qb3 0-0 10.0-0 Be6 11.Nbd2 h6 12.d4 ed4 13.Nd4.

8.c4 Nc6 9.Nc3 Nb4 10.Qb3 Nc6 11.0-0 0-0 12.d4 Bd7 13.de5.

8.Qd2 Nc6 9.a3 0-0 10.0-0 h6 11.Nc3 Be6 12.Rfd1 d5 13.d4.

8.Qd2 Nc6 9.a3 0-0 10.Nc3 h6 11.0-0 Be6 12.Rad1 Re8 13.Rfe1.

8.Nbd2 Nc6 9.0-0 0-0 10.a3 h6 11.c4 Be6 12.Qc2 Qd7 13.d4.

8.Nbd2 Nc6 9.0-0 0-0 10.a3 h6 11.c4 Bf5 12.e4 Bg6 13.c5.

8.d4 e4 9.Nfd2 Nc6 10.c4 0-0 11.a3 d5 12.Nc3 dc4 13.Bc4.

8.e4 Nc6 9.0-0 Nb4 10.Qd2 Nc6 11.Nc3 0-0 12.d4 Bd7 13.Rad1.

7.h3 Bd7

8.0-0 Nc6 9.a3 0-0 10.c4 Be6 11.Nc3 Qd7 12.d4 ed4 13.Nd4.

8.0-0 Nc6 9.a3 0-0 10.Nbd2 Qb8 11.c4 Qa7 12.d4 ed4 13.ed4.

8.a3 0-0 9.0-0 a5 10.Nc3 ab4 11.ab4 Nc6 12.b5 Ra1 13.Qa1.

8.a3 Nc6 9.0-0 0-0 10.c4 h6 11.Nc3 Re8 12.Qd2 Be6 13.e4.

8.Ba3 0-0 9.Nc3 Nc6 10.0-0 d5 11.Qd2 Re8 12.e4 de4 13.Ne4.

8.c3 Nc6 9.0-0 0-0 10.Nbd2 h6 11.Qc2 Nd5 12.a3 Re8 13.c4.

8.Nc3 Nc6 9.a3 0-0 10.0-0 d5 11.d4 e4 12.Ne5 Bd6 13.Nd7.

8.Nc3 Nc6 9.a3 0-0 10.0-0 h6 11.Qd2 Re8 12.Rfe1 Be6 13.Rad1.

8.c4 0-0 9.Nc3 Nc6 10.a3 Bf5 11.e4 Bd7 12.0-0 Nd4 13.Nd4.

8.Qd2 Nc6 9.a3 0-0 10.Nc3 d5 11.0-0 Bd6 12.e4 d4 13.Nd5.

8.Nbd2 Nc6 9.a3 0-0 10.c4 Be6 11.0-0 Qd7 12.Qc2 h6 13.d4.

8.Nbd2 h6 9.0-0 Nc6 10.c4 Nb4 11.Qb3 Nc6 12.c5 0-0 13.Nc4.

8.e4 Nc6 9.a3 0-0 10.0-0 Qb8 11.Qd2 Qa7 12.Nc3 Nd4 13.Nd4.

7.h3 Be6

8.0-0 0-0 9.Nc3 Nc6 10.a3 h6 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1.

8.0-0 0-0 9.Nc3 Nc6 10.d4 Nb4 11.a3 ed4 12.Nd4 Nc6 13.Ne6.

8.a3 a5 9.Nc3 ab4 10.ab4 Nc6 11.Ra8 Qa8 12.b5 Nb4 13.0-0.

8.a3 h6 9.0-0 0-0 10.c4 Qd7 11.Qc2 Qc6 12.Nbd2 Qd7 13.d4.

8.Ba3 Nc6 9.Nc3 0-0 10.0-0 d5 11.d4 e4 12.Ne5 Nb4 13.Qd2.

8.c3 Nc6 9.Ng5 0-0 10.Ne6 fe6 11.Nd2 Qe8 12.Qb3 d5 13.0-0.

8.Nc3 Nc6 9.0-0 0-0 10.a3 h6 11.Qd2 Re8 12.Ne4 Qd7 13.Rfe1.

8.Nc3 Nc6 9.a3 0-0 10.0-0 d5 11.d4 e4 12.Ne5 Qe8 13.b5.

8.c4 0-0 9.0-0 Nc6 10.a3 Qd7 11.Nbd2 h5 12.Qc2 Bf5 13.e4.

8.c4 Nc6 9.0-0 0-0 10.a3 Qd7 11.Qc2 b5 12.Nc3 Rab8 13.Ng5.

8.Qd2 0-0 9.Nc3 Nc6 10.a3 d5 11.0-0 d4 12.Na4 h6 13.Nc5.

8.Qd2 Nc6 9.0-0 0-0 10.a3 h6 11.Nc3 Qb8 12.e4 Qa7 13.Nd1.

8.Nbd2 Nc6 9.0-0 0-0 10.d4 ed4 11.Nd4 Nd4 12.Bd4 d5 13.a3.

8.Nbd2 Nc6 9.0-0 Nb4 10.c3 Nc6 11.Ng5 Qd7 12.Ne6 fe6 13.Qb3.

8.d4 Nc6 9.Nc3 Nb4 10.0-0 0-0 11.de5 de5 12.Ne5 Qd6 13.Nf3.

8.d4 Nc6 9.Nc3 Nb4 10.a3 ed4 11.Nd4 Nc6 12.0-0 Nd4 13.Qd4.

8.Ng5 Nc6 9.Ne6 fe6 10.a3 0-0 11.0-0 d5 12.Nd2 Qd7 13.c4.

8.Ng5 Nc6 9.Ne6 fe6 10.a3 d5 11.0-0 0-0 12.Nd2 Qd7 13.c4.

7.h3 Bf5

8.0-0 0-0 9.e4 Bd7 10.a3 Nc6 11.Nbd2 Re8 12.d4 ed4 13.Nd4.

8.0-0 0-0 9.e4 Be6 10.Nc3 Nc6 11.d4 ed4 12.Nd4 Nb4 13.Qd2

8.a3 Nc6 9.0-0 0-0 10.e4 Be6 11.Nbd2 Qd7 12.Re1 Rfd8 13.Ng5.

8.a3 Nc6 9.e4 Be6 10.0-0 0-0 11.c4 Nh5 12.Nc3 Nf4 13.Nd5.

8.Na3 Nc6 9.0-0 0-0 10.e4 Be6 11.Qd2 h6 12.c4 Qd7 13.Bc3.

8.Na3 Nc6 9.Qd2 0-0 10.e4 Be6 11.0-0 h6 12.c4 Qd7 13.Bc3.

8.c3 Nc6 9.0-0 0-0 10.e4 Be6 11.Nbd2 d5 12.Ng5 Bc8 13.Qc2.

8.Bc3 Nc6 9.e4 Be6 10.0-0 0-0 11.Nbd2 h6 12.Nb3 Qb8 13.Qd2.

8.Nc3 Nc6 9.e4 Be6 10.d4 d5 11.ed5 Nd5 12.Nd5 Qd5 13.0-0.

8.Nc3 Nc6 9.e4 Bg6 10.a3 Nd4 11.0-0 0-0 12.Nd4 ed4 13.Nd5.

8.c4 Nc6 9.Nbd2 0-0 10.0-0 Nb4 11.Qb3 Nc6 12.e4 Be6 13.d4.

8.Qd2 0-0 9.e4 Be6 10.0-0 Nc6 11.c4 Nh5 12.b5 ab5 13.cb5.

8.Qd2 0-0 9.e4 Be6 10.Nc3 Nc6 11.a3 d5 12.Ng5 d4 13.Na4.

8.Nbd2 Nc6 9.0-0 0-0 10.a3 Qd7 11.e4 Be6 12.Re1 Rfd8 13.Ng5.

8.Nbd2 Nc6 9.a3 0-0 10.0-0 Qd7 11.e4 Be6 12.d4 ed4 13.Nd4.

8.e4 Bd7 9.0-0 0-0 10.Nbd2 Nc6 11.a3 Re8 12.Nc4 Be6 13.Ne3.

8.e4 Bd7 9.Qd2 Nc6 10.0-0 0-0 11.a3 h6 12.Rd1 Be6 13.Nc3.

8.g4 Be6 9.Nc3 Nc6 10.d4 Nd5 11.Nd5 Bd5 12.de5 de5 13.0-0.

6.Be2 Na6

7.a3 0-0 8.Nbd2 (8.0-0 c5 9.c3 g6 10.Nbd2 Qc7 11.b5 Nb8 12.h3 Be6 13.Ng5; 8.c4 c5 9.b5 Nc7 10.Nc3 a6 11.ba6 Ra6 12.0-0 Bd7 13.a4; 8.c3 c6 9.Nbd2 Qc7 10.0-0 h6 11.h3 Bd7 12.Qb3 Be6 13.c4) 8...h6 9.0-0 Qd7 10.c4 Bf5 11.Qc2 c5 12.Bc3 b5 13.e4.

7.b5 Nb4 8.c4 (8.a3 Nbd5 9.c4 Nb6 10.0-0 0-0 11.Nc3 a6 12.h3 Bf5 13.a4; 8.Qd2 a5 9.Nc3 0-0 10.h3 Bd7 11.0-0 c6 12.bc6 Nc6 13.Nb5; 8.e4 Qd7 9.a3 Nbd5 10.ed5 Qb5 11.Qc1 Nd5 12.Nc3 Qa5 13.Qd2; 8.h3 Be6 9.0-0 0-0 10.Qd2 a5 11.Nc3 a4 12.a3 Nbd5 13.Nd5; 8.0-0 0-0 9.h3 Bd7 10.Qd2 a5 11.a3 Nbd5 12.c4 Nb6 13.Nc3; 8.Nbd2 0-0 9.h3 Bh5 10.0-0 a6 11.a3 Nbd5 12.c4 Nb6 13.a4) 8...e4 9.de4 Ne4 10.Nc3 f5 11.0-0 0-0 12.Nd5 a5 13.a3.

7.c3 0-0 8.Nbd2 (8.0-0 h6 9.h3 Be6 10.Nbd2 c5 11.b5 Nc7 12.c4 Bd7 13.Ne4) 8...c5 9.a3 Qc7 10.0-0 h5 11.b5 Qb6 12.ba6 Qb2 13.Rb1.

7.c3 c5 8.a3 0-0 9.0-0 Re8 10.Nbd2 Qc7 11.b5 Nb8 12.h3 Bh5 13.Qb3.

7.c3 Rc8 8.Nbd2 (8.0-0 c5 9.a3 0-0 10.Nbd2 h6 11.h3 Be6 12.b5 Nc7 13.c4; 8.a3 0-0 9.Nbd2 Qd7 10.0-0 h6 11.c4 Bf5 12.h3 c5 13.Qb3; 8.h3 Be6 9.Nbd2 0-0 10.0-0 c5 11.b5 Nc7 12.c4 Bd7 13.Bc3; 8.Na3 0-0 9.0-0 c5 10.b5 Qb6 11.Nd2 Be6 12.Qc2 Nc7 13.Ndc4) 8...0-0 9.h3 Bd7 10.0-0 c5 11.a3 h6 12.Qb3 b5 13.c4.

7.c3 Nd5 8.Nbd2 (8.0-0 f6 9.Qb3 Be6 10.c4 Nb6 11.d4 0-0 12.Nbd2 c6 13.a4; 8.Qb3 c6 9.Nbd2 0-0 10.h3 Bh5 11.c4 Nf6 12.0-0 Nc7 13.c5; 8.h3 Be6 9.Nbd2 0-0 10.0-0 f5 11.Qc2 Qd7 12.a3 f4 13.c4; 8.a3 0-0 9.c4 Nf6 10.Nc3 Qd7 11.0-0 h6 12.h3 Bf5 13.e4; 8.Na3 0-0 9.0-0 h6 10.Qd2 Qd7 11.h3 Be6 12.Nc2 Qa4 13.Bd1) 8...0-0 9.0-0 Bf6 10.h3 Bd7 11.Ne4 Qe7 12.a3 h6 13.Qb3.

7.c3 Qd7 8.0-0 (8.Nbd2 0-0 9.0-0 h6 10.Qb3 Rab8 11.a4 Be6 12.Qc2 c5 13.b5; 8.h3 Be6 9.Nbd2 h6 10.0-0 0-0 11.a4 c5 12.b5 Nc7 13.c4; 8.a3 0-0 9.Nbd2 h6 10.0-0 Be6 11.c4 Rab8 12.Qc2 c5 13.b5) 8...0-0 9.Nbd2 c5 10.a3 h6 11.Qb3 Bf5 12.h3 Rab8 13.c4.

7.c3 Be6 8.d4 (8.Nbd2 0-0 9.d4 c5 10.de5 de5 11.b5 Nb8 12.0-0 Nbd7 13.Ng5; 8.0-0 0-0 9.Nbd2 c5 10.b5 Nc7 11.c4 Bd7 12.Ne4 Ne6 13.Qc2; 8.a3 0-0 9.Nbd2 h6 10.0-0 c5 11.Qa4 Qe8 12.b5 Nc7 13.c4; 8.h3 c5 9.a3 0-0 10.Nbd2 Qd7 11.0-0 h6 12.Ne4 Qc6 13.Nf6) 8...0-0 9.Nbd2 ed4 10.Nd4 Bd5 11.0-0 c5 12.bc5 Nc5 13.c4.

7.c3 Bf5 8.Nbd2 (8.0-0 0-0 9.Nbd2 c5 10.a3 h6 11.e4 Be6 12.Qc2 Qc7 13.b5; 8.e4 Be6 9.Nbd2 0-0 10.0-0 c5 11.b5 Nc7 12.a4 Bd7 13.Nc4; 8.Na3 0-0 9.0-0 c5 10.e4 Be6 11.b5 Nc7 12.Qc2 Rc8 13.h3; 8.d4 e4 9.Nh4 Be6 10.b5 Nb8 11.g3 g5 12.Ng2 a6 13.h4) 8...c5 9.0-0 0-0 10.a3 Qc7 11.b5 Nb8 12.e4 Be6 13.Ng5.

7.c3 h5 8.h3 (8.Nbd2 0-0 9.0-0 c5 10.h3 Bd7 11.a3 b5 12.e4 Rc8 13.Qb3; 8.0-0 c5 9.h3 Bd7 10.a3 Qc7 11.Nbd2 0-0 12.e4 Qc6 13.Qb3; 8.a3 0-0 9.Nbd2 Qd7 10.0-0 Qc6 11.Qb3 Qd7 12.c4 Bf5 13.Ng5; 8.Na3 0-0 9.h3 Bd7 10.0-0 c5 11.Qb3 Be6 12.Qa4 Qb6 13.Nc4; 8.e4 0-0 9.Nbd2 c5 10.a3 Qc7 11.h3 Bd7 12.0-0 Qc6 13.Qb3) 8...Bd7 9.0-0 c5 10.a3 0-0 11.Nbd2 b5 12.e4 Qb6 13.Ng5.

7.c3 h6 8.Nbd2 (8.0-0 0-0 9.Nbd2 Qd7 10.Qb3 Rab8 11.a4 Be6 12.Qc2 c5 13.b5; 8.h3 Bf5 9.Nbd2 0-0 10.0-0 c5 11.a3 Qd7 12.Qb3 b5 13.c4; 8.a3 0-0 9.Nbd2 Bf5 10.0-0 c6 11.h3 Qc7 12.Qc2 Rab8 13.e4; 8.Na3 0-0 9.0-0 c5 10.h3 Be6 11.b5 Qb6 12.Rb1 Nc7 13.c4) 8...0-0 9.0-0 Qd7 10.Qb3 Be6 11.c4 c6 12.h3 b5 13.Bc3.

7.Qd2 A) 7...0-0 8.0-0 (8.h3 Be6 9.0-0 h6 10.a3 c5 11.b5 Nc7 12.c4 a6 13.ba6) 8...Bd7 9.c4 e4 10.Ng5 ed3 11.Bd3 h6 12.Ne4 c5 13.b5; B) 7...Qd7 8.c4 (8.0-0 0-0 9.h3 Be6 10.a3 c5 11.c4 e4 12.Ng5 d5 13.cd5; 8.e4 Nh5 9.h3 Be6 10.d4 ed4 11.Nd4 Nf6 12.0-0 0-0 13.f3; 8.Na3 0-0 9.h3 Be6 10.0-0 Nd5 11.c3 f5 12.Rfe1 Rab8 13.h4; 8.h3 Be6 9.0-0 0-0 10.a3 h6 11.Nc3 c5 12.Ne4 Qa4 13.c3; 8.a3 c5 9.h3 Bf5 10.e4 Bg6 11.0-0 0-0 12.bc5 Nc5 13.Nc3; 8.c3 0-0 9.0-0 c5 10.h3 Be6 11.Na3 cb4 12.cb4 Rac8 13.Rac1) 8...0-0 9.0-0 h6 10.a3 c5 11.h3 Bh5 12.b5 Nc7 13.Nc3.

7.h3 Bf3 8.Bf3 Nb4 9.Qd2 Nc6 10.c4 0-0 11.Nc3 Qd7 12.0-0 h6 13.Rab1.

7.h3 Bh5 8.b5 (8.c3 0-0 9.Nbd2 c5 10.a3 Qc8 11.0-0 h6 12.Qb3 Qe6 13.c4; 8.a3 c5 9.c3 0-0 10.Nbd2 Qc7 11.0-0 h6 12.Qb3 Qd7 13.c4; 8.Qd2 0-0 9.0-0 Qd7 10.e4 c5 11.bc5 Nc5 12.Nc3 h6 13.a4) 8...Nc5 9.Nc3 0-0 10.0-0 Ne6 11.a4 h6 12.Nh4 Be2 13.Qe2.

7.a3 c5

8.0-0 cb4 9.h3 Be6 10.d4 0-0 11.Nbd2 ba3 12.Ra3 Qb6 13.Qb1.

8.b5 Qa5 9.Bc3 Qb5 10.d4 Qc6 11.de5 de5 12.Nbd2 Rd8 13.Bc4.

8.c3 0-0 9.Nbd2 Qc7 10.0-0 h6 11.h3 Bd7 12.Qb3 b5 13.c4.

8.c3 g6 9.Nbd2 0-0 10.0-0 Qd7 11.h3 Bf5 12.e4 Be6 13.d4.

8.Nc3 cb4 9.ab4 Nb4 10.d4 0-0 11.de5 de5 12.Ne5 Qd1 13.Bd1.

8.h3 Be6 9.c3 0-0 10.0-0 h6 11.Nbd2 Qd7 12.e4 Qe8 13.Nc4.

7.b5 Nc5

8.0-0 Na4 9.Ba3 0-0 10.c4 Nb6 11.h3 Be6 12.Nc3 a6 13.Qb3.

8.0-0 Na4 9.Ba3 0-0 10.c4 Nb6 11.h3 Bf5 12.e4 Bd7 13.Nc3.

8.Ba3 e4 9.Nd4 Bd7 10.de4 0-0 11.0-0 Nce4 12.f3 Nc5 13.Nc3.

8.Nc3 0-0 9.0-0 Qd7 10.d4 ed4 11.Qd4 Bf5 12.Rac1 a6 13.ba6.

8.Nc3 0-0 9.0-0 Qd7 10.d4 ed4 11.Qd4 Bf5 12.Rac1 h6 13.Nd5.

8.h3 Bf5 9.Nc3 0-0 10.0-0 Qd7 11.Ba3 e4 12.Nd4 d5 13.Qd2.

8.h3 Bf5 9.Nc3 0-0 10.d4 ed4 11.Nd4 Qd7 12.Nf5 Qf5 13.0-0.

7.h3 Bd7

8.a3 c5 9.c3 0-0 10.Nbd2 Qc7 11.0-0 b5 12.e4 Rab8 13.Rc1.

8.b5 Bb5 9.0-0 0-0 10.Nc3 Bd7 11.Qd2 h6 12.Ba3 d5 13.Qc1.

8.c3 0-0 9.Nbd2 c5 10.a3 Qc7 11.0-0 b5 12.Rc1 h6 13.c4.

8.c3 0-0 9.Nbd2 c5 10.a3 Qc7 11.0-0 b5 12.d4 e4 13.Ng5.

8.Qd2 0-0 9.0-0 c5 10.bc5 Nc5 11.Nc3 Qb6 12.Rab1 Qc6 13.d4.

8.b5 Nc5 9.Nc3 0-0 10.0-0 a6 11.d4 ed4 12.ed4 Nce4 13.ba6.

8.Qd2 0-0 9.0-0 h6 10.e4 c5 11.bc5 Nc5 12.Nc3 Bc6 13.Qe3.

7.h3 Be6

8.a3 0-0 9.0-0 c5 10.c3 h6 11.Nbd2 Qc7 12.b5 Nb8 13.c4.

8.a3 0-0 9.Nbd2 h6 10.0-0 c5 11.b5 Nc7 12.c4 Bd7 13.Ne4.

8.Ba3 c5 9.bc5 Nc5 10.0-0 0-0 11.Bc5 dc5 12.Ne5 Qc7 13.f4.

8.b5 Nc5 9.Nc3 0-0 10.0-0 a6 11.d4 ed4 12.ed4 Nce4 13.Ne4.

8.b5 Nc5 9.Nc3 0-0 10.0-0 Qd7 11.Ba3 e4 12.Ng5 ed3 13.Bd3.

8.c3 0-0 9.Nbd2 Qd7 10.0-0 h6 11.e4 c5 12.a3 Qc7 13.b5.

8.c3 0-0 9.Nbd2 h6 10.0-0 Qd7 11.Qc2 c5 12.a3 Rac8 13.Qd1.

8.Qd2 0-0 9.0-0 Qd7 10.c4 h6 11.Bc3 c5 12.b5 Nc7 13.Qc2.

7.h3 Bf5

8.a3 c5 9.0-0 0-0 10.b5 Nc7 11.Nc3 Qd7 12.a4 h6 13.e4.

8.b5 Nc5 9.Nc3 0-0 10.0-0 Qd7 11.Ba3 e4 12.Nd4 d5 13.Qd2.

8.b5 Nc5 9.Nc3 0-0 10.d4 ed4 11.Nd4 Bg6 12.0-0 Qd7 13.Bf3.

8.Qd2 0-0 9.0-0 Bd7 10.c4 e4 11.Ng5 ed3 12.Bd3 h6 13.Ne4.

8.Qd2 c5 9.b5 Nc7 10.Nc3 Bd7 11.Rb1 0-0 12.0-0 a6 13.ba6.

8.e4 Be6 9.a3 c5 10.c3 0-0 11.0-0 Nh5 12.Ne5 Nf4 13.Nf3.

8.e4 Be6 9.Qd2 0-0 10.0-0 Nh5 11.d4 Nf4 12.de5 Bg5 13.Kh2.

6.Be2 Nc6

7.b5 Nb4 8.e4 d5 9.Ne5 Be2 10.Qe2 Bd6 11.0-0 0-0 12.a3 Nc2 13.Qc2.

7.h3 A) 7...Bh5 8.b5 (8.a3 0-0 9.Nc3 a6 10.0-0 h6 11.Rc1 Qe8 12.Ra1 Qd8 13.e4) 8...Nb4 9.0-0 0-0 10.Qd2 Nbd5 11.c4 Nb6 12.Nc3 a6 13.a4; B) 7...Bd7 8.b5 (8.a3 0-0 9.0-0 a6 10.Nc3 h6 11.Qd2 d5 12.d4 e4 13.Ne5) 8...Na5 9.Nc3 0-0 10.0-0 c6 11.a4 h6 12.Qd2 Be6 13.e4; C) 7...Bf3 8.Bf3 Nb4 9.0-0 0-0 10.Qd2 Nc6 11.c4 d5 12.cd5 Nd5 13.Nc3.

7.b5 Na5

8.0-0 a6 9.a4 0-0 10.Nc3 h6 11.Qd2 Qd7 12.h3 Be6 13.e4.

8.a4 0-0 9.Nc3 h6 10.0-0 c6 11.Qd2 Be6 12.h3 Qc7 13.Rfe1.

8.Nc3 0-0 9.h3 Be6 10.0-0 h6 11.Qd2 a6 12.a4 c6 13.e4.

8.Nc3 0-0 9.h3 Be6 10.Ng5 Bf5 11.0-0 h6 12.e4 Bd7 13.Nf3.

8.Qd2 c5 9.Nc3 0-0 10.0-0 Qb6 11.h3 Bd7 12.a4 a6 13.Rfb1.

8.Qd2 c5 9.Nc3 0-0 10.0-0 Bd7 11.a4 h6 12.Ne4 Be6 13.h3.

8.h3 Bd7 9.Nc3 0-0 10.0-0 c6 11.a4 h6 12.Qd2 Qc7 13.e4.

8.h3 Bd7 9.Nc3 0-0 10.0-0 h6 11.Qd2 c6 12.a4 Be6 13.e4.

7.b5 Nb8

8.0-0 0-0 9.Nc3 Nbd7 10.h3 Bf5 11.e4 Bg6 12.Nh4 Nc5 13.Ng6.

8.Na3 0-0 9.0-0 Nbd7 10.h3 Be6 11.Ng5 Nc5 12.Ne6 fe6 13.Nc4.

8.a4 0-0 9.Nc3 Nbd7 10.h3 Be6 11.0-0 h6 12.a5 a6 13.ba6.

8.Nc3 Nbd7 9.h3 Bf5 10.e4 Bg6 11.0-0 0-0 12.Nh4 Nc5 13.Ng6.

8.Nbd2 0-0 9.0-0 Nbd7 10.h3 Be6 11.Ng5 a6 12.Ne6 fe6 13.a4.

8.Nfd2 Be2 9.Qe2 a6 10.Qf3 c6 11.bc6 Nc6 12.Nc3 0-0 13.0-0.

8.Ng5 Be2 9.Qe2 0-0 10.0-0 h6 11.Ne4 a6 12.a4 Ne4 13.de4.

8.h3 Be6 9.Nc3 0-0 10.Ng5 Nbd7 11.0-0 d5 12.Ne6 fe6 13.d4.

6.Be2 Nbd7

7.0-0 0-0 8.c4 (8.h3 Be6 9.Nc3 a5 10.a3 d5 11.ba5 Ra5 12.d4 e4 13.Ng5; 8.Nc3 a5 9.b5 h6 10.h3 Be6 11.Rb1 Re8 12.Qd2 Qb8 13.Rfe1; 8.a3 Nb6 9.Nc3 h6 10.h3 Be6 11.e4 Qe8 12.a4 a5 13.b5; 8.Nbd2 a5 9.h3 Be6 10.b5 Nc5 11.Ng5 Bf5 12.e4 Bd7 13.Rb1) 8...c6 (8...a5 9.b5 Nc5 10.Nc3 Qd7 11.d4 ed4 12.Nd4 Be2 13.Qe2) 9.h3 Bh5 (9...Be6 10.Nc3 Qb6 11.Na4 Qb4 12.Bc3 Qa3 13.Bb2) 10.Nbd2 (10.Nc3 Qb6 11.a3 a5 12.b5 Nc5 13.Rb1) 10...Re8 (better is 10...a5!? 11.a3 (11.b5 h6 12.bc6 bc6 13.Rb1) 11...b5= (11...h6 12.Qb3 Qb6 13.Rfe1) 12.g4 Bg6 13.g5) 11.g4+/- Bg6 (11...e4 12.de4 Bg6 13.Nh4) 12.g5 Nh5 13.Ne1 Bg5? (better is 13...d5!? 14.a3 Bb4 15.ab4 Qg5 16.Kh2 Nhf6+/-) 14.Bh5+– Bf5 15.Ne4 Bh3? (better is 15...Be7 16.Ng3 Be6+–) 16.Bf7! (16.Nd6?! Rf8 17.Ng2 Be7 18.Nf7 Qc7+–) 16...Kf7 17.Qh5 Kg8 (17...Ke7 18.Ng5 Be6 19.Ne6 Ke6+–) 18.Ng5 (18.Qg5?! Qg5 19.Ng5 Bf1 20.Kf1 a5+=; 18.Qh3?! Qe7+–) 18...Bf5 (18...Nf6 19.Qh3 h6 20.Ngf3+–) 19.Qf7 Kh8 20.Qf5 Rf8 (20...g6 21.Nf7 Kg8 22.Nd8 gf5 23.Nb7 Re6+–) 21.Qh7 1–0. marere – kjg, internet, 2011.

7.0-0 a5 8.ba5 0-0 9.h3 Bf5 10.Qd2 Nc5 11.Nc3 Qd7 12.d4 Nfe4 13.Ne4.

7.0-0 a5 8.b5 0-0 9.Nc3 h6 10.h3 Be6 11.a4 Re8 12.Qd2 d5 13.Rfb1.

7.0-0 a5 8.h3 Be6 9.ba5 h6 10.Nbd2 0-0 11.Nb3 Nb8 12.Qd2 Nc6 13.e4.

7.0-0 Nb6 8.Nc3 (8.d4 e4 9.Nfd2 Be2 10.Qe2 d5 11.a4 a5 12.ba5 Ra5 13.c4; 8.h3 Na4 9.Qc1 Be6 10.Nc3 Nc3 11.Bc3 h6 12.e4 Qd7 13.Qd2; 8.c4 0-0 9.h3 Be6 10.Nc3 h6 11.Qb3 a5 12.b5 a4 13.Qb4) 8...a5 9.b5 0-0 10.h3 Be6 11.Qd2 h6 12.a3 Qd7 13.Rab1.

7.0-0 c5 8.bc5 (8.b5 Qb6 9.Nc3 a6 10.a4 ab5 11.Nb5 0-0 12.h3 Be6 13.Ng5; 8.h3 Be6 9.b5 a6 10.Nc3 0-0 11.Ng5 Qa5 12.a4 Qb4 13.Rb1; 8.Nbd2 cb4 9.h3 Be6 10.Ng5 0-0 11.a3 d5 12.ab4 Bb4 13.c3; 8.a3 0-0 9.Nbd2 a5 10.h3 Bf5 11.e4 Be6 12.b5 Qb6 13.a4) 8...Nc5 9.Nc3 Qb6 10.Rb1 0-0 11.Ba3 Qc7 12.Nb5 Qc8 13.d4.

7.0-0 c6 8.Nc3 (8.h3 Be6 9.Ng5 Qb6 10.a3 0-0 11.Nd2 d5 12.Ndf3 Bd6 13.Ne6; 8.Nbd2 0-0 9.h3 Bf5 10.e4 Be6 11.Ng5 Qb6 12.Ne6 fe6 13.a3; 8.Qd2 a5 9.h3 Be6 10.Ng5 ab4 11.Qb4 Nd5 12.Ne6 Nb4 13.Nd8; 8.Na3 0-0 9.h3 Be6 10.Nc4 Nd5 11.Qd2 b5 12.Na5 Qb6 13.a3; 8.a3 0-0 9.Nc3 h6 10.Qd2 Be6 11.h3 d5 12.d4 Bd6 13.de5) 8...Qb6 9.h3 Be6 10.a3 h6 11.d4 0-0 12.e4 a5 13.b5.

7.0-0 Be6 8.Ng5 (8.Nc3 0-0 9.d4 h6 10.d5 Bf5 11.Nh4 Bh7 12.Qd2 a5 13.ba5; 8.d4 a5 9.b5 0-0 10.Nc3 h6 11.Qd3 c6 12.Rab1 Qc7 13.e4; 8.Qd2 0-0 9.Nc3 d5 10.a3 a5 11.Ng5 ab4 12.ab4 Bb4 13.Ne6; 8.Nbd2 h6 9.c4 0-0 10.Qc2 a5 11.a3 Nb6 12.b5 Qd7 13.h3; 8.a3 h6 9.c4 0-0 10.Nc3 c6 11.Qc2 Qc7 12.h3 d5 13.cd5; 8.Na3 0-0 9.Qd2 h6 10.Nc4 Nb6 11.Na5 Na4 12.Ba3 Rb8 13.c4) 8...0-0 9.Nc3 d5 10.Ne6 fe6 11.a3 a5 12.b5 d4 13.Na4.

7.0-0 h6 8.h3 (8.Nc3 0-0 9.Qd2 a5 10.b5 a4 11.a3 Be6 12.h3 Re8 13.Rad1; 8.a3 0-0 9.Nc3 Be6 10.e4 c6 11.d4 Qb6 12.Qd2 a5 13.Na4; 8.Qe1 a5 9.h3 Be6 10.b5 0-0 11.Nc3 Re8 12.Qd2 d5 13.a3; 8.Nbd2 0-0 9.h3 Be6 10.c4 Nb6 11.Qc2 Qd7 12.a4 a5 13.b5; 8.Na3 0-0 9.Nc4 Nb6 10.Nfd2 Be6 11.Rb1 Nfd5 12.Bf3 Qd7 13.h3; 8.a4 a5 9.b5 0-0 10.h3 Be6 11.Nbd2 Nc5 12.d4 ed4 13.ed4; 8.Qd2 0-0 9.h3 Be6 10.Nc3 a5 11.a3 d5 12.Na4 Qe8 13.ba5; 8.Nfd2 Be6 9.Nc3 a5 10.ba5 0-0 11.Nb3 d5 12.Qd2 Bb4 13.h3; 8.d4 0-0 9.Nc3 e4 10.Nh4 Be6 11.d5 Nd5 12.Nd5 Bh4 13.Qd4; 8.c3 0-0 9.Nbd2 a5 10.h3 Be6 11.a3 Nb6 12.b5 c6 13.bc6; 8.b5 0-0 9.Nc3 a6 10.h3 Be6 11.a4 Re8 12.Qd2 a5 13.Rfb1; 8.Nh4 Be6 9.Nc3 a5 10.b5 0-0 11.f4 ef4 12.ef4 Nb6 13.f5) 8...Be6 9.Nbd2 0-0 10.c4 a5 11.a3 Nb6 12.Qc2 ab4 13.ab4.

7.a3 A) 7...a5 8.h3 (8.Nc3 d5 9.h3 Be6 10.b5 0-0 11.0-0 h6 12.Qd2 Bd6 13.Na4; 8.b5 0-0 9.Nc3 h6 10.0-0 Be6 11.h3 c6 12.Qd2 Qc7 13.Rab1; 8.Nbd2 ab4 9.ab4 0-0 10.0-0 Nd5 11.h3 Be6 12.c3 Ra1 13.Qa1) 8...Be6 9.Nc3 d5 10.b5 0-0 11.0-0 h6 12.Qd2 Bd6 13.Na4; B) 7...c5 8.0-0 (8.Nbd2 0-0 9.0-0 h6 10.c4 Qb6 11.Qb3 Bf5 12.h3 Rfc8 13.Bc3; 8.h3 Be6 9.Nc3 0-0 10.0-0 Qb6 11.Qd2 d5 12.Na4 Qb5 13.Nc5; 8.Nc3 Qb6 9.0-0 0-0 10.h3 Be6 11.Qd2 h6 12.e4 Nh5 13.Nd5; 8.Qd2 cb4 9.ab4 Qb6 10.h3 Be6 11.0-0 0-0 12.c4 h6 13.Na3) 8...0-0 9.Nbd2 a5 10.h3 Be6 11.Ng5 ab4 12.ab4 cb4 13.Ne6; C) 7...h6 8.h3 (8.0-0 0-0 9.Nc3 c6 10.h3 Be6 11.Ne4 Ne4 12.de4 Nb6 13.Bc3; 8.Nc3 0-0 9.0-0 c6 10.Qd2 Be6 11.h3 d5 12.d4 Bd6 13.de5; 8.Nbd2 0-0 9.h3 Be6 10.0-0 Nb6 11.c4 Qd7 12.a4 a5 13.b5; 8.c4 0-0 9.0-0 c6 10.Nc3 Qb6 11.h3 Be6 12.d4 e4 13.Nd2; 8.e4 0-0 9.0-0 c5 10.Nc3 Qb6 11.Qd2 cb4 12.Na4 Qb5 13.ab4; 8.Qd2 a5 9.0-0 0-0 10.Nc3 d5 11.h3 Be6 12.b5 Bd6 13.Na4) 8...Be6 9.0-0 c6 10.c4 Qb6 11.Nbd2 0-0 12.Qc2 a5 13.Bc3; D) 7...Be6 8.Nbd2 (8.Nc3 h6 9.0-0 0-0 10.e4 c5 11.Qd2 a6 12.h3 Qb6 13.Qe3; 8.0-0 h6 9.Nc3 0-0 10.e4 Nb6 11.h3 a5 12.b5 Qd7 13.Re1 ; 8.Ng5 Bd5 9.Nc3 Bg2 10.Rg1 Bc6 11.b5 Bd5 12.e4 h6 13.Nf3; 8.Qd2 a5 9.Ng5 ab4 10.Ne6 fe6 11.0-0 b3 12.cb3 0-0 13.Nc3; 8.h3 0-0 9.Nc3 d5 10.0-0 a5 11.b5 h6 12.Qd2 Bd6 13.Na4; 8.c4 0-0 9.Nc3 h6 10.h3 c6 11.0-0 Qc7 12.e4 a5 13.d4; 8.e4 0-0 9.0-0 c5 10.Nc3 h6 11.Qd2 Qb6 12.Rab1 a6 13.h3) 8...0-0 9.Ng5 Bf5 10.0-0 Nd5 11.e4 Bg5 12.ef5 N7f6 13.Nf3; E) 7...c6 8.Nbd2 (8.h3 Be6 9.0-0 h6 10.Nbd2 0-0 11.c4 Qc7 12.Qc2 Bf5 13.Ne4; 8.0-0 h6 9.h3 Be6 10.Nbd2 0-0 11.c4 Qb6 12.Qc2 a5 13.Bc3; 8.Nc3 0-0 9.h3 Bf5 10.e4 Bg6 11.Nh4 Qb6 12.0-0 d5 13.ed5; 8.c4 0-0 9.h3 Bf5 10.0-0 Qb6 11.Nc3 a5 12.Na4 Qc7 13.e4; 8.Qd2 e4 9.Nd4 Be2 10.Qe2 c5 11.bc5 dc5 12.Nf5 g6 13.Ne7) 8...0-0 9.h3 Be6 10.0-0 h6 11.c4 a5 12.Qc2 Qc7 13.d4; F) 7...Nb6 8.Nc3 (8.c4 0-0 9.Nc3 h6 10.0-0 Be6 11.Qc2 Qd7 12.Nd2 c6 13.Nce4) 8...0-0 9.0-0 h6 10.h3 Be6 11.e4 a5 12.b5 Qd7 13.a4; G) 7...h5 8.Nc3 (8.0-0 0-0 9.h3 Be6 10.Ng5 Bf5 11.e4 Bg6 12.Nc3 c6 13.Qd2; 8.h3 Bf5 9.e4 Be6 10.Nc3 a5 11.Ng5 d5 12.Ne6 fe6 13.ed5 ; 8.e4 0-0 9.Nc3 c5 10.h3 cb4 11.ab4 Be6 12.0-0 Qb6 13.b5; 8.Nbd2 Nb6 9.h3 Bd7 10.0-0 Na4 11.Qb1 0-0 12.Ne4 Ne4 13.de4; 8.c4 0-0 9.Nc3 Nb6 10.h3 Bf5 11.e4 Bg6 12.0-0 a5 13.Qc2) 8...a5 9.h3 Bf5 10.0-0 d5 11.b5 0-0 12.Nd5 Nd5 13.e4; H) 7...Bf5 8.0-0 (8.e4 Be6 9.Ng5 0-0 10.0-0 d5 11.Nc3 Ne4 12.de4 Bg5 13.ed5; 8.Nc3 0-0 9.e4 Be6 10.0-0 h6 11.d4 c6 12.Qd2 Qc7 13.Bd3; 8.h3 a5 9.e4 Be6 10.Nc3 Nh5 11.0-0 Nf4 12.d4 Nf6 13.Bb5; 8.c4 0-0 9.Nc3 Nb6 10.0-0 h6 11.e4 Be6 12.Qb3 c6 13.d4) 8...0-0 9.e4 Be6 10.Ng5 d5 11.Nc3 a5 12.Ne6 fe6 13.Bg4; I) 7...0-0 8.0-0 (8.Nc3 d5 9.0-0 a5 10.b5 h6 11.h3 Be6 12.Na4 Bd6 13.Qd2; 8.h3 Be6 9.Nc3 d5 10.Qd2 a5 11.b5 h6 12.0-0 Bd6 13.Na4) 8...a5 9.Nc3 d5 10.b5 h6 11.Qd2 Bd6 12.h3 Be6 13.Na4.

7.Nc3 A) 7...0-0 8.0-0 (8.h3 Be6 9.0-0 h6 10.e4 a5 11.a3 c6 12.d4 ab4 13.ab4; 8.a3 a5 9.0-0 d5 10.h3 Be6 11.ba5 Ra5 12.Qd2 c6 13.Ng5; 8.b5 a6 9.h3 Be6 10.a4 ab5 11.ab5 Nc5 12.0-0 Nd5 13.Ra8; 8.a4 d5 9.b5 c5 10.h3 Bf5 11.g4 Be6 12.g5 Ne8 13.Qd2; 8.Qd2 a5 9.ba5 c6 10.h3 Be6 11.Ng5 Qa5 12.0-0 Nd5 13.Ne6) 8...d5 9.b5 Bd6 10.h3 Bf5 11.Nd5 Nd5 12.e4 Be6 13.ed5; B) 7...d5 8.h3 (8.0-0 0-0 9.h3 Be6 10.Rb1 h6 11.Na4 a5 12.b5 Bd6 13.Qd2; 8.b5 0-0 9.0-0 h6 10.Qd2 Bd6 11.h3 Bf5 12.Nh4 Be6 13.Nf3; 8.a3 a5 9.b5 0-0 10.h3 Be6 11.Ng5 Bf5 12.e4 de4 13.de4; 8.d4 Bf3 9.gf3 0-0 10.b5 Bd6 11.0-0 Qe7 12.de5 Qe5 13.f4) 8...Be6 9.0-0 0-0 10.Na4 Bb4 11.Ne5 Ne5 12.Be5 Bd6 13.Bd6; C) 7...h6 8.h3 (8.0-0 a5 9.a3 0-0 10.e4 Nb6 11.Qd2 Qd7 12.d4 Rfe8 13.Rfd1; 8.a3 0-0 9.0-0 c6 10.Nh4 Be6 11.Qd2 d5 12.Nf3 Qc7 13.h3; 8.d4 a5 9.b5 0-0 10.de5 de5 11.0-0 Be6 12.Qe1 Bd6 13.Rd1; 8.e4 0-0 9.0-0 a5 10.a3 Be6 11.h3 c5 12.b5 Qc7 13.Qd2; 8.a4 0-0 9.0-0 d5 10.b5 Bd6 11.h3 Be6 12.Qd2 Nc5 13.Ba3; 8.Nd2 Be2 9.Qe2 d5 10.a3 0-0 11.0-0 a5 12.b5 Nc5 13.f4; 8.Nh4 Be6 9.0-0 a5 10.a3 0-0 11.f4 ef4 12.ef4 ab4 13.ab4; 8.Rb1 0-0 9.0-0 a5 10.b5 Be6 11.h3 Qe8 12.Re1 d5 13.Qd2; 8.Qd2 a5 9.b5 0-0 10.h3 Bf5 11.e4 Bg6 12.0-0 Nc5 13.Ba3; 8.Ne4 a5 9.a3 0-0 10.0-0 d5 11.Nf6 Bf6 12.h3 Bf5 13.c4) 8...Be6 9.0-0 0-0 10.e4 a5 11.a3 c5 12.b5 Qc7 13.Qd2; D) 7...a5 8.b5 (8.ba5 0-0 9.h3 Bf5 10.0-0 c6 11.e4 Be6 12.Ng5 Qa5 13.Re1; 8.a3 d5 9.b5 0-0 10.0-0 Bd6 11.h3 Bf5 12.Nd5 Nd5 13.e4) 8...0-0 9.h3 Bf5 10.0-0 Nc5 11.d4 ed4 12.Nd4 Bg6 13.f4.

7.Qd2 A) 7...0-0 8.h3 (8.0-0 a5 9.h3 Be6 10.b5 h6 11.Nc3 a4 12.a3 b6 13.e4; 8.Nc3 d5 9.b5 a6 10.h3 Be6 11.d4 e4 12.Ng5 ab5 13.Ne6) 8...Be6 9.0-0 a5 10.b5 h6 11.Nc3 a4 12.a3 Qc8 13.e4; B) 7...c5 8.h3 (8.0-0 Qb6 9.a3 0-0 10.h3 Be6 11.Nc3 h6 12.e4 Nh5 13.Nd5; 8.a3 0-0 9.h3 Be6 10.Nc3 h6 11.0-0 Qb6 12.e4 Nh5 13.Nd5; 8.Na3 0-0 9.h3 Be6 10.0-0 cb4 11.Qb4 d5 12.Qd2 Rc8 13.Rab1; 8.b5 a6 9.Nc3 Qa5 10.a4 0-0 11.e4 ab5 12.Nb5 c4 13.h3; 8.bc5 Nc5 9.Nc3 Qb6 10.Rb1 0-0 11.0-0 Qc6 12.h3 Bd7 13.d4) 8...Be6 9.b5 a6 10.Nc3 0-0 11.0-0 ab5 12.Nb5 Qa5 13.Qa5; C) 7...h6 8.0-0 (8.h3 Be6 9.0-0 0-0 10.Nc3 a5 11.a3 d5 12.b5 Bd6 13.Na4; 8.Na3 0-0 9.0-0 Nb6 10.h3 Bd7 11.Nc4 Na4 12.Ba3 b5 13.Na5 ; 8.Nc3 0-0 9.0-0 d5 10.h3 Bf3 11.Bf3 Bb4 12.a3 Ba5 13.Qd1) 8...0-0 9.Nc3 d5 10.a3 a5 11.h3 Be6 12.b5 Bd6 13.Na4; D) 7...Nb6 8.Nc3 (8.h3 Be6 9.Nc3 0-0 10.0-0 h6 11.e4 Nh5 12.d4 Nf4 13.d5; 8.0-0 Na4 9.c4 0-0 10.h3 Nb2 11.Qb2 Bd7 12.Nc3 h6 13.d4 ) 8...a5 9.ba5 Ra5 10.h3 Bd7 11.0-0 Na4 12.Na4 Ra4 13.c4; E) 7...a5 8.ba5 (8.0-0 ab4 9.h3 Be6 10.a3 b3 11.Nc3 Nc5 12.d4 ed4 13.ed4; 8.b5 0-0 9.h3 Bf5 10.Nc3 a4 11.e4 Be6 12.Ng5 a3 13.Bc1; 8.h3 Be6 9.b5 0-0 10.Nc3 a4 11.a3 h6 12.0-0 Qe8 13.Rfe1) 8...0-0 9.h3 Be6 10.Ng5 c6 11.0-0 Qa5 12.Qa5 Ra5 13.Nc3.

7.Nbd2 A) 7...0-0 8.0-0 (8.h3 Be6 9.Ng5 a5 10.Ne6 fe6 11.b5 Nc5 12.0-0 Na4 13.Qb1; 8.a3 Nb6 9.0-0 Na4 10.Qc1 h6 11.h3 Be6 12.e4 c5 13.bc5 ; 8.c3 a5 9.0-0 ab4 10.cb4 Nb6 11.h3 Be6 12.d4 Na4 13.Qc1; 8.Nb3 Nb6 9.h3 Bd7 10.0-0 Na4 11.Qc1 Nd5 12.a3 h6 13.c4; 8.e4 a5 9.a3 c5 10.bc5 Nc5 11.0-0 h6 12.h3 Bd7 13.c4) 8...a5 9.h3 Be6 10.a3 ab4 11.ab4 Nd5 12.c3 Ra1 13.Qa1; B) 7...h6 8.h3 (8.0-0 Be6 9.c4 0-0 10.Qc2 a5 11.a3 Nb6 12.d4 e4 13.Ne4; 8.c4 a5 9.a3 0-0 10.0-0 Nb6 11.h3 Bh5 12.b5 Qd7 13.Qc2; 8.Nb3 0-0 9.h3 Be6 10.0-0 Nb6 11.Qd2 Na4 12.Bc1 Nd5 13.c4; 8.Nc4 0-0 9.0-0 Nb6 10.h3 Be6 11.Qd2 Qd7 12.Nb6 ab6 13.c4; 8.c3 0-0 9.0-0 Be6 10.h3 a5 11.a3 c6 12.Qc2 b5 13.c4; 8.a3 0-0 9.0-0 Nb6 10.h3 Bd7 11.Ne4 Na4 12.Qb1 Be6 13.c4; 8.e4 0-0 9.0-0 Nb6 10.h3 Na4 11.hg4 Nb2 12.Qb1 Na4 13.Qb3; 8.Ne4 a5 9.a3 0-0 10.0-0 d5 11.Nf6 Bf6 12.c4 dc4 13.dc4; 8.a4 Nd5 9.h3 Be6 10.0-0 Nb4 11.d4 0-0 12.de5 de5 13.Ne5) 8...Be6 9.0-0 0-0 10.c4 Nb6 11.Qc2 Qd7 12.a4 a5 13.b5; C) 7...c5 8.h3 (8.a3 0-0 9.0-0 h6 10.c4 Bf5 11.Qc2 Rc8 12.h3 Be6 13.Rfe1; 8.bc5 Nc5 9.d4 ed4 10.Nd4 Bd7 11.0-0 0-0 12.c3 d5 13.Qc2 ; 8.b5 Qa5 9.c4 0-0 10.0-0 Nb6 11.h3 Na4 12.hg4 Nb2 13.Qc2; 8.0-0 cb4 9.h3 Bh5 10.a3 ba3 11.Ra3 0-0 12.Ne4 a5 13.Qd2; 8.c3 0-0 9.0-0 Qc7 10.h3 Bf5 11.e4 Bg6 12.Qb3 Nh5 13.g3; 8.Nc4 cb4 9.h3 Be6 10.Ng5 b5 11.Nd2 0-0 12.0-0 Qb6 13.Ne6) 8...Be6 9.a3 h6 10.0-0 0-0 11.c4 a5 12.Qb3 a4 13.Qc2; D) 7...Nb6 8.h3 (8.c4 0-0 9.0-0 a5 10.h3 Bh5 11.b5 Qd7 12.a4 Rfe8 13.Qc2; 8.c3 0-0 9.0-0 a5 10.b5 a4 11.a3 Qd7 12.c4 h6 13.Qc2; 8.d4 Na4 9.Bb5 Bd7 10.Ba4 Ba4 11.de5 de5 12.Be5 Qd7 13.0-0) 8...Bd7 9.0-0 0-0 10.Ne4 Na4 11.Qc1 Nd5 12.d4 f5 13.Bc4; E) 7...Nd5 8.a3 (8.0-0 Nb4 9.c3 Nc6 10.d4 ed4 11.cd4 0-0 12.Qb3 Nb6 13.d5; 8.h3 Be6 9.a3 h6 10.d4 a5 11.c4 N5f6 12.0-0 ab4 13.ab4) 8...0-0 9.h3 Be6 10.c4 N5b6 11.0-0 f5 12.a4 a5 13.ba5; F) 7...Be6 8.Ng5 (8.0-0 h6 9.c4 0-0 10.Qc2 c5 11.b5 Qc7 12.Qc3 d5 13.h3; 8.c4 0-0 9.0-0 a5 10.a3 h6 11.Qc2 c6 12.d4 Qc7 13.Bc3) 8...Bd5 9.c4 Bc6 10.b5 Bg2 11.Rg1 h6 12.Nf7 Kf7 13.Rg2; G) 7...g6 8.h3 (8.0-0 a5 9.ba5 h6 10.h3 Be6 11.Nb3 0-0 12.Qd2 Kg7 13.e4; 8.Nc4 0-0 9.0-0 Nb6 10.h3 Nc4 11.dc4 Bf5 12.Nh4 Be6 13.Nf3 ; 8.Nb3 0-0 9.h3 Bf3 10.Bf3 d5 11.Qd2 e4 12.de4 de4 13.Be2; 8.d4 0-0 9.h3 Bf5 10.c4 c6 11.g4 Be6 12.0-0 Qb6 13.Bc3; 8.c3 0-0 9.0-0 d5 10.h3 Bf5 11.Qc2 a5 12.b5 e4 13.de4; 8.a3 0-0 9.h3 Be6 10.Ng5 Bd5 11.c4 Bg2 12.Rg1 h6 13.Nf7; 8.c4 a5 9.h3 Bf5 10.a3 ab4 11.ab4 0-0 12.0-0 Ra1 13.Qa1) 8...Bf5 9.e4 Be6 10.0-0 a5 11.ba5 Ra5 12.Ng5 0-0 13.Ne6; H) 7...c6 8.0-0 (8.h3 Be6 9.0-0 h6 10.c4 0-0 11.Qc2 a5 12.a3 Qc7 13.d4; 8.d4 0-0 9.h3 Bf3 10.Bf3 Qc7 11.0-0 d5 12.c3 e4 13.Be2; 8.a3 0-0 9.0-0 h6 10.h3 Bf5 11.e4 Be6 12.d4 a5 13.c4; 8.Nc4 0-0 9.0-0 Nb6 10.Nfd2 Be6 11.a4 Nbd5 12.b5 Qd7 13.bc6; 8.c3 0-0 9.h3 Be6 10.0-0 h6 11.Qc2 Qc7 12.c4 a5 13.a3) 8...0-0 9.d4 e4 10.Ng5 Be2 11.Qe2 d5 12.Bc3 Qc7 13.a4; I) 7...a5 8.ba5 (8.h3 Be6 9.ba5 Ra5 10.Nc4 Bc4 11.dc4 0-0 12.0-0 Nc5 13.Nd2; 8.b5 Nc5 9.h3 Bf5 10.d4 Na4 11.de5 Nb2 12.Qc1 Na4 13.Nd4; 8.a3 ab4 9.ab4 Nd5 10.h3 Be6 11.c3 0-0 12.0-0 Ra1 13.Qa1) 8...0-0 9.Nc4 Nc5 10.0-0 Na4 11.Rb1 Nd5 12.Qd2 Qc8 13.Ba1.

7.h3 A) 7...Bf5 8.Nc3 (8.e4 Be6 9.Nc3 a5 10.a3 Nh5 11.0-0 Nf4 12.d4 Nf6 13.Bb5; 8.0-0 0-0 9.e4 Be6 10.Nc3 a5 11.a3 h6 12.d4 c6 13.Qd2 ; 8.a3 0-0 9.0-0 c5 10.e4 Be6 11.Nc3 Qb6 12.Qd2 h6 13.Qe3; 8.Nbd2 a5 9.e4 Be6 10.a3 0-0 11.0-0 c5 12.b5 Qb6 13.a4; 8.Qd2 0-0 9.0-0 a5 10.e4 Be6 11.b5 Nc5 12.Nc3 Qd7 13.Ba3; 8.Na3 c5 9.Qd2 cb4 10.Qb4 0-0 11.0-0 d5 12.Qd2 Qb6 13.Rab1) 8...a5 9.b5 0-0 10.0-0 Nc5 11.Ba3 Nfd7 12.Qd2 Bf6 13.Bb2; B) 7...Bh5 8.Nc3 (8.0-0 a5 9.b5 0-0 10.Nc3 h6 11.a3 Nc5 12.d4 ed4 13.Qd4; 8.Nbd2 0-0 9.0-0 Nb6 10.c4 h6 11.a4 a5 12.b5 Re8 13.Nb3; 8.g4 Bg6 9.Nc3 c6 10.g5 Nd5 11.Nd5 cd5 12.c4 dc4 13.dc4; 8.a3 0-0 9.Nc3 a5 10.0-0 d5 11.b5 Bf3 12.Bf3 Nc5 13.d4) 8...a5 9.b5 h6 10.0-0 0-0 11.Re1 a4 12.a3 Re8 13.Nh4; C) 7...Be6 8.Nc3 (8.0-0 h6 9.Nbd2 0-0 10.c4 Qe8 11.Qc2 Nb6 12.a4 a5 13.b5; 8.a3 a5 9.Nc3 d5 10.0-0 0-0 11.b5 h6 12.Qd2 Bd6 13.Na4; 8.Ng5 d5 9.0-0 0-0 10.Ne6 fe6 11.Qd2 c6 12.a3 a5 13.Nc3; 8.Qd2 a5 9.b5 0-0 10.0-0 Nc5 11.Nc3 Qd7 12.Ba3 b6 13.d4; 8.Nbd2 a5 9.ba5 Ra5 10.0-0 0-0 11.Nb3 Ra4 12.Ng5 Bd5 13.Nf3) 8...0-0 9.0-0 a5 10.b5 h6 11.Qd2 a4 12.a3 Nc5 13.d4.

5.d4 0-0

6.de5+= de5 7.Qd8 Rd8 8.Ne5 (8.Be5!? Bb4 9.c3= Bd6 10.Bf6+=) 8...Bb4+= 9.c3 (9.Bc3 Bd6 10.Bc4=) 9...Bd6 10.c4 (10.Nc4+=) 10...Bb4 11.Nd2?? (11.Bc3 Na6+=) 11...Bf5 (better is 11...Rd2 12.a3 Ba5-+) 12.0-0-0+= Nc6 (better is 12...Na6+=) 13.e4?? (13.Nc6 bc6 14.f3 Rab8+=) 13...Be6?? (13...Bd2 14.Rd2 Rd2 15.Nc6 Rb2 (worse is 15...bc6 16.Kd2 Ne4 17.Ke3–/+) 16.Kb2 Be4-+ (16...bc6?! 17.ef5 Ng4 18.Be2 Nf2 19.Rf1=)) 14.Nc6+= bc6 15.a3 (15.Bf6 gf6 16.Be2 Rab8+=) 15...Bc5 (better is 15...Bd2!? 16.Rd2 Ne4–/+) 16.f3+= Rab8 17.Be2 Be3 18.Rhe1?? Nd7?? 19.Kb1 Nc5–/+ 20.Ka2?? Na4 21.Rb1?? Bd2 22.Red1 h6 23.Be5 Rb1 24.Rb1? Bc3 25.Bc7 Rc8 26.Bd6 Bf6 27.e5 Nc3 28.Ka1 Nb1 29.Kb1 Bf5 30.Kc1 Bg5 31.Kd1 Be3 32.c5 Rd8 33.g3 Bc5 34.f4 Bd6 35.ed6 Rd6 36.Ke1 Bc2 37.Bf3 c5 38.h4 c4 39.a4 Ba4 40.Ke2 c3 41.Ke3 c2 42.Be4 c1Q 43.Kf3 Bd1 44.Kf2 Qd2 0–1. Nautiluschess – Crashed, ICS blitz, 2001.

6.de5+= de5 7.Ne5 Bb4 8.Bc3 Bc3 9.Nc3 Qe7 10.Nc4 Rd8 11.Bd3 a6 12.0-0 +=.

6.de5+= de5 7.Ne5 Bb4 8.Bc3 Qd1 9.Kd1 Ne4 10.Bb4 Nf2 11.Ke2 (11.Ke1 Nh1 12.Bf8 Kf8+/-) 11...Nh1 12.Bf8 +=.

6.de5+= de5 7.Ne5 Bb4 8.Bc3 Qe7 A) 9.Bb4 Qb4 10.Nd2 Qc3 11.Nd3 Rd8 12.Rb1–/+; B) 9.Qd4 Bc3 10.Qc3 Nd5 (10...Ne4 11.Qb2 Qh4 12.Nd3+=) 11.Qd4 Rd8 (11...Nb4 12.Bd3+=) 12.Qb2+=; C) 9.Nd3 Bc3 10.Nc3 C1) 10...Rd8 11.Qb1 c5 12.Be2+= (12.Qb5+=); C2) 10...c5 11.Be2 Rd8 12.Qb1+=.

6.de5+= de5 7.Ne5 Bb4 8.Nd2 Ne4 9.Nec4 Nd2 10.Nd2 Bg4 11.Qc1 Re8 12.c3+= (12.Bc4+=).

5.d4 e4!?

6.Nfd2 0-0 7.c4 c6 8.Nc3 Bf5 9.Be2 Nbd7 10.g4+= Bg6 (10...Be6 11.g5 (worse 11.Nde4 Ne4 12.Ne4 d5=+) 11...Ne8 12.d5 cd5 13.cd5+=) 11.g5 (11.h4!? h6 12.g5 hg5 13.hg5+/-) 11...Ne8+= 12.Nde4 Bg5 13.Ng5 Qg5 14.Qd2 (14.h4 Qe7+=) 14...a5 (14...Qg2 15.Rf1=+) 15.b5= Nef6 16.0-0-0 (16.Bf3 cb5 A) worse 17.Bb7 Ra7 (worse 17...bc4 18.Ba8 Ra8 19.Qe2=) 18.Bf3 bc4-/+; B) 17.Nb5=) 16...cb5=+ 17.Nb5 Ne4 18.Qe1 Qf5 (18...Rfc8 19.Nc3=+) 19.Bd3 Qf2 (better 19...d5=+) 20.Be4+/- Qe1 21.Rhe1 (worse 21.Rde1 Be4 22.Nd6 Bh1 23.Rh1 Rfc8 24.Nc8 Rc8=+) 21...Be4 22.Nd6 Bf3 (22...f5 23.Rg1+/- (23.Ne4?! fe4 24.Kd2 Rac8=)) 23.Rd3 (23.Rd2 Nf6 24.e4 Ne4 25.Ne4 Rae8 26.Nf6 gf6 27.Rg1 Kh8+-) 23...f5 24.Rb3 The backward pawn on b7 becomes a target 24...b6 25.Rf1 Be4 (25...Be2 26.Rf2 (26.Rf5?! Rf5 27.Nf5 Bc4=) 26...Rf6 27.c5+/-) 26.Kd2 (26.d5 Ra7+/-) 26...Rf6 27.Ne4 fe4 28.Rf6 gf6 29.Rb5 Kf7 30.Kc3 Ke6? (30...Rc8 31.Rf5+=) 31.d5 (31.Rh5!?+-) 31...Kd6 (31...Kf5 32.Kb3+=) 32.Kd4 Rg8 33.Ba3 White prepares c5 33...Kc7 34.c5 bc5 35.Bc5 (35.Ke4?! Kd6 36.Ra5 Re8 37.Kf4 Kd5=) 35...Rg2 (35...a4 36.Ra5 Rg2 37.a3+= (37.Ra4? Rd2 38.Kc3 Nc5 39.Ra7 Kb6 40.Kd2 Ka7-+)) 36.Ra5+/- f5 37.Be7 (37.d6 Kc6 38.Bb4 Rh2+-) 37...Rd2 (better 37...Kb7+=) 38.Kc4?? (38.Kc3 Rd3 39.Kb4 Kb7 40.Rb5 Kc8+/-) 38...Ne5?? (38...Nb6 39.Kc3 Rd3 40.Kc2 Nd5-/+ (40...Re3?! 41.Bc5 Nd5 42.Be3 Ne3 43.Kc3+=)) 39.Kb4 (39.Kc3 Nf3 40.d6 Kd7 41.Rf5 Rh2+/-) 39...Rb2 (better 39...Nd3!? 40.Kc3 Rh2 41.d6 Kd7 42.Rf5 Ra2+/-) 40.Kc3+/- Nd3 41.d6 Kd7 42.Ra7 (better 42.Rf5!? Rh2 43.Ra5+-) 42...Ke6+= 43.Bf8 Rb8 44.Bg7 (better 44.Re7!? Kd5 45.d7+/-) 44...Rc8 (44...Kd6 45.Ra6 Ke7 46.a4=) 45.Kd2 (45.Kd4 Ne1 (worse 45...Kd6 46.Rf7+/-) 46.Rc7 Rd8=) 45...Rd8 (45...Kd6 46.a4=+) 46.Bd4= Rd6 (46...Rd7 47.Rd7 Kd7 48.a4=) 47.a4 (47.Rh7 Kd5+=) 47...f4 (47...h6 48.Kc3=) 48.a5 (48.Rh7 Kd5+=) 48...f3 (better 48...h6!?=+) 49.Rh7+= f2 50.Ke2 Ra6?? (better 50...Kd5 51.Rh5 Kc4=) 51.Rh6+- Kd5 52.Ra6 Kc4 (52...Nb4 53.Rf6 f1R 54.Kf1+-) 53.Rf6 Kb5 54.Rf2 (54.a6 Nc1 55.Kf1 Nb3 56.a7 Nc5 57.a8Q Na4 58.Qb7 Kc4 59.Rc6 Nc5 60.Rc5 Kd3 61.Qb5 Kd2 62.Qe2) 54...Nf2 (54...Ka5 55.Rf8 Nc1 56.Kd1 Nb3+-) 55.Kf2 Ka5 56.h4 Kb5 (56...Kb4 57.h5 Kb5 58.h6 Ka5 59.h7 Kb4 60.h8Q Kb5 61.Qc8 Kb4 62.Qc5 Ka4 63.Bc3 Kb3 64.Qb4 Kc2 65.Ke2 Kc1 66.Qb2) 57.h5+- Kc6 58.h6 Kd5 59.h7 Kc4 60.h8Q Kd3 (60...Kd5 61.Qe5 Kc6 62.Qe4 Kc7 63.Qd5 Kc8 64.Qc6 Kb8 65.Qd7 Ka8 66.Qc8) 61.Qe5 (61.Qe5 Kc2 62.Qc5 Kb3 63.Qb5 Ka3 64.Bc3 Ka2 65.Qb2; 61.Qc8 Kd2 62.Bb2 Kd3 63.Qc3) 1-0. Osmak,Iulija (2435) - Petrova,I (2075), Titled Tuesday 6th Oct, 2020.

6.Nfd2 0-0 7.c4 d5 8.b5 a6 9.ba6 Na6 10.Nc3 c6+=.

6.Nfd2 0-0 7.c4 Bf5 8.Nc3 d5 9.b5 Nbd7 10.cd5 Nb6=.

6.Nfd2 0-0 7.Be2 d5 (7...Be6 8.0-0 d5 9.a3 a5 10.b5 c6=; 7...Bf5 8.0-0 d5 9.a3 a5 10.b5 c6=) 8.a3 Be6 9.0-0 a5 10.b5 c6=.

6.Nfd2 d5+=

7.a3 0-0 (7...a5 8.b5 Bg4 9.Be2 Be2 10.Qe2 Nbd7=; 7...Bg4 8.Be2 Be2 9.Qe2 0-0 10.0-0 a5=) 8.c4 c6 9.cd5 cd5 10.Nc3= a5 =.

7.Ba3 Bg4 (7...Be6 8.b5 a6 9.Be7 Qe7 10.ba6 Na6+=; 7...a6 8.c4 dc4 9.Bc4 0-0 10.Nc3 Bf5=; 7...c6 8.c4 Bg4 9.Qc2 0-0 10.b5 cb5+=; 7...0-0 8.c4 Be6 9.cd5 Nd5 10.b5 Ba3+=) 8.Be2 Be2 9.Qe2 a6 10.0-0+= b5 +=.

7.b5 Bg4 (7...a6 8.c4 ab5 9.cd5 b4 10.Qc2 Bf5+=) 8.Be2 Be2 9.Qe2 a6 10.c4+= (10.ba6 Na6+=) 10...ab5 +=.

7.c4 Bb4 8.Nc3 c6 9.cd5 cd5 10.Bb5 Nc6 11.Qa4 Qb6 12.Qb4 Bd7 13.Qb3 a6 14.Bc6 Qc6 15.0-0 0-0 16.Rac1 Qd6 17.Ba3 Qe6 18.Bf8 Rf8 19.Qb7 Ne8 20.Nb3 Nf6 21.Nc5 Qc6 22.Qa6 Qa6 23.Na6 1–0. phildo (1865) – robledomattos (1705), gameknot.com, 2013.

7.f3 ef3 8.Nf3 Bg4 (8...Bb4 9.c3 Bd6 10.c4-+) 9.Nbd2 (9.a3 a5–/+) 9...0-0 (9...Bb4 10.c3 Bd6 11.Qb3–/+) 10.Bd3 (10.a3 a5–/+) 10...Bb4-+ 11.c3 Ba5 12.0-0 h5 (12...c5!?–/+) 13.h3 Be6 14.Qe2 Nbd7 15.e4 de4 16.Ne4 Bd5 17.Nf6 Nf6 (17...gf6 18.Nh4 Re8 19.Qh5+–; 17...Qf6 18.Ne5 Qd6 19.Nd7 Qd7 20.c4+– (20.Qh5?! g6 21.Qg5 Bb6+/-)) 18.c4 Bf3 19.Qf3 a6 (19...Bb6!? 20.c5 Ba5=) 20.d5 (20.Qb7? Rb8 21.Qa6 Rb2-+) 20...Bb6 21.Kh1 Qe7? (21...Re8 22.Qf5 Qd7 23.Qg5+/-) 22.Bf6?? (better is 22.Qf5 Qe3 23.Bf6+–) 22...gf6?? (better is 22...Qf6 23.Qf6 gf6+/-) 23.Qh5 (23.Qg3 Kh8 24.Rf5 Qe1 25.Re1 Be3 26.Rh5 Bh6 27.Rh6) 23...f5+– 24.Bf5 f6 25.Be6 (better is 25.Rf4 Be3 26.Rh4 Qg7 27.Be6 Rf7 28.Bf7 Kf8+–) 25...Kg7 26.Qg4 Kh8 27.Rf5 Rg8 28.Rh5 Qh7 29.Rh7 Kh7 30.Bg8 Rg8 31.Qh5 Kg7 32.Re1 1–0. Bull_Dog_Baz – greenbook, ChessWorld.net, 2011.

5.Be2 0-0

6.0-0 a5 7.b5 Nbd7=.

6.0-0 b6 7.d3 Bb7 8.e4 a6 9.c4 Ng4 (9...Nfd7 10.Nc3=) 10.h3 (10.Nbd2 f5=) 10...Nf6 11.Nc3 Nc6 (11...Nbd7 12.a3=) 12.Nd5 (12.a3 Nd4=) 12...Nd5 13.cd5 Nb4 14.a3 Nd5 15.ed5 Bd5 16.Nd2 Be6 (16...Bg5 17.d4=) 17.d4 (17.Bf3 Rb8+=) 17...f6 (17...ed4 18.Bd4 c5 19.Bb2=) 18.Re1 (18.Bf3 Ra7+/-) 18...c5+= 19.de5 (19.Bd3 Bd5+=) 19...fe5= 20.Bg4 (20.Bf3 Ra7=) 20...Bf7 (20...Qd7 21.Nc4 Bg4 22.hg4=) 21.Qe2 (21.Bf3 Ra7=) 21...b5 22.Rad1 (22.Bf3 Rc8=) 22...Qc7 23.Bf3 (23.Bf5 Rad8=) 23...Rab8 (23...Rad8 24.Be4=) 24.Be4 Bh4 (better is 24...Rbd8!?=) 25.Nf3+/- Be7 (25...Bf6!? 26.Qd3 Rbd8 27.Bh7 Kh8+/-) 26.Ne5!+– de5 27.Be5! Qa7? (27...Qe5 28.Bh7 Double attack) 28.Bb8 (better is 28.Qg4 Bf6 29.Bf6 g6+–) 28...Qb8 (28...Rb8 29.Bh7! Kh7 30.Qe7 Qe7 31.Re7+–) 29.Bh7! Kh7 30.Qe7 c4 31.Re4 Kg8 (31...c3 32.Rd7 c2+–) 32.Qg5 (32.Rg4 Qb6 33.Rd6 Qc5+–) 32...Qa7? (32...Qc7 33.Re7 Qc6 34.Qe5+–) 33.Rd8 (better is 33.Re7 Qb6 34.Rf7 Rf7 35.Rd8 Qd8 36.Qd8 Kh7 37.Qa5+–) 33...Qc7 34.Rg4 (34.Rf8 Kf8 35.Rh4 Kg8+–) 34...Be6 35.Rf8 (35.Rgd4 c3 36.Rf8 Kf8 37.Rd8 Kf7 38.Qh5 Ke7 39.Qe8 Kf6 40.Qf8 Kg5+–) 35...Kf8 36.Rh4 c3 (36...Qe7 37.Qf4 Kg8 38.Qb8 Kf7 39.Rf4 Kg6+–) 37.Qf4?? (better is 37.Rh8 Kf7 38.Qh5 Kf6 39.Rf8 Ke7 40.Re8 Kd7 41.Ra8+–) 37...Qf4+= 38.Rf4 Ke7 39.Rf3 c2 40.Rc3 Bf5 41.Kf1 a5 (41...Kd6 42.Ke2+/-) 42.Ke1+= b4 43.ab4 (43.Re3 Be6 44.Kd2 b3+/-) 43...ab4+= 44.Re3 Kd6? (better is 44...Be6!? 45.Kd2 b3+/-) 45.Kd2+– Kd5 46.g4 (46.Rf3 Be4 47.Rg3 g6+–) 46...Be4 (46...Bh7 47.Re7 b3 48.Kc1+–) 47.f3 Bg6 48.f4 (48.Kc1 Kd4 49.Re7 b3+–) 48...Kd4 (48...Be4 49.f5 Kd4 50.Re4 Ke4 51.Kc2+–) 49.Rg3 (49.Re7!? Be4 50.Rg7 b3+–) 49...Be4 50.f5 Kc4 51.Re3 Bd3?? (51...Kd4 52.Re4! Ke4 53.Kc2 Kf4+–) 52.Rd3 c1Q 53.Kc1 Kd3 54.Kb2 (better is 54.g5 Ke3 55.f6 gf6 56.gf6+–) 54...Ke4 55.Kb3 Kf4 (55...Kd5 56.Kb4 Kd4 57.h4+–) 56.Kb4 Kg3 (56...Ke4 57.Kc5 Ke5 58.Kc6+–) 57.g5 Kf4 (57...Kh3 58.f6 g6 59.f7+–) 58.f6 1–0. Hogic,Enes – Imamovic,Smail (1970), 2rd Tuzla Bosnia Herz., Team Ch, 2015.

6.0-0 Qd7 7.a3 Qf5 8.c4 Qg6 (8...e4 9.Nd4 Qg6 10.f3=) 9.Nc3 (9.d4 e4 10.Nh4 Qg5+=) 9...Be6 (9...Bh3 10.Nh4 Qg5 11.f4 Qh4 12.gh3 Qh3 13.Nb5+=) 10.Nh4 (10.d4 e4 11.Ne1 d5=) 10...Qh6 (10...Qg5 11.Nf3 Qg6 12.d4=) 11.Nf3 Nbd7 12.Qc2 Nb6 13.d4 (13.d3 Qg6 14.Nb5 Nc4=) 13...Bc4 (better is 13...Nc4!? 14.Nd5 Bd5 15.Bc4 Bf3 16.gf3 d5+=) 14.de5= de5 15.Ne5 Bd6 16.Nb5 (16.Bc4 Be5 17.f4 Ng4-+ (17...Nc4?! 18.fe5 Ng4 19.h3 Nge3 20.Qb3-+)) 16...Be2 17.Qe2 Ne4 (17...Rfe8 18.Nd6 cd6 19.Ng4 Ng4 20.Qg4+=) 18.Rac1 Be5 19.Be5 c6 20.Nc3 White prepares the advance b5 (20.Qd3 Nf2 21.Kf2 cb5 22.Qb5 Rad8=) 20...f5 (20...Nc3 21.Rc3 Rae8 22.Bd4=) 21.Ne4+= fe4 22.Bd4 (22.Qg4 Rae8 23.Rc5 Na4 24.Bg7 Qg7+–) 22...Nd5= 23.b5 Qe6 (23...a6 24.bc6 bc6 25.Qg4+/-) 24.bc6+= bc6 25.Qa6 Rfc8 26.Qb7 (26.f3 ef3 27.Rf3 Rc7+=) 26...Ne7 (26...Qf7 27.Qf7 Kf7 28.f3+=) 27.Rc5 (27.Rfd1 Rcb8 28.Qa6 Rd8+=) 27...Rcb8 28.Qa6 (28.Qc7 Rb3+=) 28...Rb6= 29.Qa5 Ng6 30.Rfc1 Qd7 31.Qa4 Increasing the pressure on the isolated pawn on c6 31...Rc8 32.h3 (32.Ra5 Rb7+/-) 32...Kh8 33.R5c4 Rb7 34.Rc6 Threatening mate: Rxc8. White gets strong play along the open c–file 34...Rf8 (34...Rc6 35.Qc6 Qc6 36.Rc6+–) 35.Qa5 (35.Qc2 Qf5+/-) 35...Qf7 36.Rc7 (better is 36.R6c2+/-) 36...Rc7 37.Rc7 Qf2 38.Kh1 (38.Kh2 Rf7+/-) 38...Rf7 39.Qa7 Do you see the mate threat? 39...Rc7 40.Qc7 The mate threat is Qxg7 40...Qf8 41.a4 h5 (41...Qf1 42.Kh2 Qf8 43.a5+–) 42.a5 (42.a5 Kh7 43.a6+–) 1–0. Woelfelschneider,Peter – Pilz,Erhard, TT–05 TSC, 2003.

6.0-0 Qd7 7.d4+= e4 8.Nfd2 Qf5 (8...d5 9.a3+=) 9.c4 (9.f3 Qg5 10.f4 Qg6=) 9...d5 10.cd5 (10.f3 Bb4 11.Qb3 Bd2 12.Nd2 Qg5=) 10...Qg5 (10...Bb4 11.Qc2+=) 11.f4 (11.Nc3 Bh3 (worse is 11...Bb4 12.Nde4 Ne4 13.Ne4 Qd5 14.Qb3 Qb3 15.ab3+=) 12.g3 Bf1 13.Qf1 Bb4 14.Nde4 Ne4 15.Ne4 Qd5–/+) 11...ef3 (11...Qf5 12.d6 Bd6 13.Qc2+=) 12.Rf3+= Nd5 (worse is 12...Qd5 13.Nc3 Qe6 14.Bc4+=) 13.Qb3 (13.e4 Ne3 (13...Nb4?! 14.Qc1+=) 14.Re3 Qe3 15.Kh1 Bb4-+) 13...Be6 (13...Bb4 14.Bc4 Bd2 15.Bd5+/-) 14.Bc4 (14.Ne4 A) 14...Nb4? 15.Qb4 (15.Ng5?! Bb3 16.Nh7 Kh7 17.ab3 f5+=) 15...Qe3 16.Re3 Bb4 17.a3+–; B) 14...Qh4 15.Nc5 Qe1 16.Bf1 Qb4 17.Nb7 Bg4=) 14...c6 (14...Bb4 15.Rg3 Qh5 16.Bd5 Bd5 17.Qb4+–) 15.a4 White prepares the advance b5 (15.Ne4 Qg6 16.Nc5 Bg4 17.Bd5 cd5=) 15...Bg4 (15...Bb4 16.Bd5 Bd5 17.Qb4 Bf3 18.Nf3 Qe3 19.Kh1=) 16.Rf2= Qh5 (16...Ne3 17.Ne4 Qg6 18.Qe3+–) 17.b5 Bh4 (17...Bd6 18.h3 Bd1 19.Qd3=) 18.g3 (18.Rf1 Bg5 19.e4 Ne3=) 18...Bg5 19.Nf1 (19.e4 Ne3=) 19...Nf6 (19...Rd8 20.bc6 bc6 21.Qb7+=) 20.Nc3 Bh3 (20...Re8 21.bc6 Nc6 22.Qb7+=) 21.Ba3 (21.bc6 bc6 22.e4 Bf1 23.Raf1 Be3+=) 21...Bf1 22.Raf1 Be3 23.Bf8 Kf8 (23...Bf2 A) worse is 24.Kf2 Qh2 (24...Kf8?! 25.Kg2=) 25.Kf3 Qh5 26.Kg2 Kf8–/+; B) 24.Rf2 Kf8 25.bc6+–) 24.bc6 Nc6 (24...Bf2 25.Rf2 bc6+–) 25.Qb7+– Rd8 26.Be2 Ng4 (26...Bf2 27.Rf2 Qa5 28.Qc6 Rd4 29.Nb5+–) 27.Bg4 (27.Qc6?? Qh2) 27...Qg6 28.Qc7 (better is 28.d5!? Bf2 29.Rf2 Ne5+–) 28...Bd4 (28...Bf2 29.Rf2 (29.Kf2?! Qg4 30.Qc6 Qd4 31.Kg2 Qe3+–) 29...Rd4 30.Bd7 Rd7 31.Qd7+–) 29.Kg2 (29.Bf3 Bf2 30.Rf2 Rd3+–) 29...Bf2 30.Rf2 (30.Rf2 Kg8 31.Bd7 Rd7 32.Qd7+–) 1–0. Milde,Lars (1815) – Ritter,Fredi (1700), TT–05.20 TSC, 2003.

6.0-0 Nfd7 7.d3 f6 (7...c6 8.c4=) 8.c4+= c5 9.b5 a6 10.a4 ab5 11.cb5 b6 12.Nc3 Bb7 (12...f5 13.d4 cd4 14.Nd5+=) 13.Nd2+/- f5 14.Bf3 Bf3 15.Qf3 Rf7?? (better is 15...Ra7+/-) 16.Qa8+– Qf8 Black prepares the advance f4 (16...f4 17.Nd5+–) 17.Nc4 f4 18.ef4 Rf4 (18...ef4 19.Qf3+–) 19.Nd5 Rf7 20.Ndb6 Bh4 (20...Nb6 21.Nb6 Bh4 22.Qd5+–) 21.Nd7 Rd7 22.a5 Rf7 (22...Rd8 23.Qd5 Kh8 24.a6+–) 23.a6 Bf2 24.Rf2! Rf2 Deflection from a7 25.a7 Nd7 26.Qf8 (better is 26.Qd5 Kh8 27.a8Q Rf4+–) 26...Rf8 27.a8Q Ra8 28.Ra8 (28.Ra8 Kf7 29.Nd6 Ke6 30.Nc4+–) 1–0. Schellen,Anton – Willoughby,Peter, FICGS, 2006.

6.0-0 Re8 7.a3 e4 8.Ne1 =.

6.0-0 Re8 7.a3 Bf8 (7...e4 8.Ne1=) 8.c4= c6 9.Nc3 Bf5 10.d4 Nbd7 (10...e4 11.Nd2=) 11.Qd2 (11.Nh4!? ed4 12.Nf5 dc3 13.Bc3+=) 11...e4= 12.Nh4 Be6 (12...Bg4 13.f3 ef3 14.Nf3=) 13.d5+= cd5 14.cd5 Bg4 15.f3 ef3 16.Bf3 Bf3 (16...Rc8 17.Nb5=) 17.Nf3+= Qb6 18.Nd4 Ne5 19.Qe2 Nfd7 (19...Rac8!?=) 20.Rac1+= Rac8 21.Na4 Qd8 22.Rc8 Qc8 23.Rc1 Qd8 24.Qb5 Qg5 25.Nc2 (25.Qb7 Qe3 26.Kf1 Nd3 27.Qd7 Qf2) 25...Nf3?? (better is 25...Nf6 26.Rf1 Re7+=) 26.Kh1+– Nh4 27.g3 Nf5 (27...Qg4 28.gh4 Qf3 29.Kg1+–) 28.Qd7 Ne3 29.Ne3 (29.Nc3 Re7 30.Qc8 Nd5+/-) 29...Qe3 (better is 29...Re3!? 30.Qb5 Qh5+–) 30.Rf1 (30.Qb7 Qf3 31.Kg1 Re2 32.Qf7 Kf7 33.Rc7 Kg6 34.Rg7 Bg7 35.Bg7 Qg2) 30...Qe4 31.Kg1 Re7 32.Qf5 (32.Qd6?! Qe3 33.Rf2 Qe1 34.Kg2 Qe4 35.Kh3 Re6+=) 32...Qe3 33.Qf2 Qe4 34.Nc3 (34.Qa7?! Qc2 35.Rc1 Qb3+/-) 34...Qd3 (34...Qe3 35.Qe3 Re3 36.Rf4+–) 35.Qa7 f6 36.Qb8 Qd4 37.Rf2 (better is 37.Kg2!? Qc4+–) 37...Re1 38.Kg2 Qc4?? (38...Rh1 39.Re2 Qg1 40.Kf3 Rh2+–) 39.Qb7 (39.Qb7 Re3 40.Qc6+–) 1–0. b4_player (2110) – abecednik (1890), GameColony.com, 2002.

6.0-0 Re8 7.c4 (7.a3 e4 8.Nd4 c5+=) 7...Bf8 (7...e4 8.Ne1+=) 8.Qc2 (8.d4 e4 9.Nfd2 d5=) 8...Bg4 (8...e4 9.Ne1=) 9.Nc3 (9.a3 Nc6 10.Nc3 Rb8=) 9...Nbd7 (9...e4 10.Ng5 Be2 11.Ne2=) 10.d4 (10.h3 Bh5=) 10...e4 11.Nd2 Be2 12.Ne2 d5 13.b5 (13.a3 c6=) 13...c6 14.bc6 bc6 15.a4 (15.Rab1 Bd6=) 15...Rb8 (15...Bb4 16.Rfc1=) 16.Ba3= White prepares the advance c5 16...Qa5 (16...Ba3 17.Ra3 Qa5 18.Nc3=) 17.Bf8 Kf8 (17...Rf8 18.Nc3=) 18.c5 Rb4 Attacking the isolated pawn on a4 (18...Qc7 19.Ng3=) 19.Rfb1 Rb1 (19...Reb8 20.Rb4 Qb4 21.Rb1=) 20.Rb1+= Qa6 21.Ng3 g6 22.Rb4 Rb8 23.Rb8 Nb8 24.Qb3 (24.Qd1 Kg8+=) 24...Nbd7= 25.Nb1 Ne8 (25...h5 26.Nc3+=) 26.Na3 (26.Nc3 Nef6+=) 26...Ng7 (26...Qd3 27.Qd3 ed3 28.Kf1=) 27.Nc2 (27.Qb4 Kg8=) 27...Ne6 (27...Qd3 28.Qa2 a5 29.Na1=) 28.h3 (28.Nb4 Qb7 29.a5 Qb5=) 28...Ke7 (28...Qd3 29.Qa2=) 29.Ne1 (29.Nb4 Qc8+=) 29...f5 (29...Qa5 30.Qd1=) 30.Qc2 (30.Qd1 Kf8=) 30...Qa5 31.Kf1 (31.Qd1 f4 32.ef4 Nd4 33.Qd4 Qe1 34.Nf1 Qc1=) 31...Qb4 (31...f4 32.Ne2=) 32.Ne2 Kd8 (32...f4 33.Nc3= (33.Nf4? Nf4 34.ef4 Qd4-+)) 33.Qd1 Kc7 34.Nc1 (34.Kg1 g5=) 34...Qc4 (34...f4 35.Qg4 Qc4 36.Ne2+=) 35.Kg1 Nb8 (35...f4 36.Ne2=) 36.g3 (36.a5 f4=) 36...Na6 (36...Kc8 37.f3=) 37.Qc2 (37.Kg2 Kc8=) 37...Nb4 (37...Qc2 38.Nc2 Ng5 39.Kg2+=) 38.Qc4 (38.Qb2 Ng5 39.h4 Nc2 40.Nc2 Nf3 41.Kg2 Nd2–/+) 38...dc4+= 39.Kf1 Kb7 40.Ke2 Nc7 (40...Ka6!?–/+) 41.Kd2+= Ka6 42.Nc2 Nd3 (42...Nc2!? 43.Kc2 Nd5–/+) 43.Nd3+= cd3 (43...ed3? 44.Na3 Ka5 45.Nc4 Ka4 46.Kd3+–) 44.Nb4 Kb7 45.Kc3 (45.f3 a5 46.Nd3 ed3 47.Kd3 h5+=) 45...Na6 (45...a5 46.Na2 Nd5 47.Kd2 g5+=) 46.Na6 (better is 46.Na2!?+=) 46...Ka6–/+ 47.f4 (47.f3 g5-+) 47...Ka5 (47...ef3 48.Kd3 Ka5 49.Kd2-+) 48.Kb3 ½–½. Weigel,Hans Juergen (1935) – Osthof,Alfred (2095), GER–chT Seniors, 2003.

6.0-0 Re8 7.d3 Nbd7 8.c4 (8.Nbd2 a5 9.b5 a4 10.a3 c6 11.c4=; 8.a3 a5 9.c4 Nb6 10.b5 a4 11.Nc3=) 8...Nf8 (8...a5 9.a3 ab4 10.ab4 Ra1 11.Ba1=) 9.Nbd2 (9.Nc3 a5 10.a3 Ng6 11.b5=) 9...Ng6 (9...a5 10.b5 Ne6 11.Rb1=) 10.Qb3 (10.a3 a5 11.b5=) 10...c6 (10...a5 11.ba5=) 11.a4 (11.Rfd1=) 11...Bf8 12.Rfe1 d5 13.Nf1 Bd6 14.Ng3 h5 15.c5 Bc7 16.Nd2 h4 17.Ngf1 Be6 18.Qc2 Nh7 19.Bd1 f5 20.e4 fe4 21.de4 d4 22.Nf3 Rf8 23.Bc1 Qe7 24.Qb2 Kh8 25.Ra3 Nf4 26.Bf4 Rf4 27.g3 hg3 28.fg3 Rf6 29.Qd2 (29.a5 Raf8+=) 29...Raf8 (29...a5 30.Re2-+) 30.h4 (better is 30.Be2!?–/+) 30...a5! 31.N1h2 (31.ba5 Qc5) 31...ab4 32.Qb4 b6! 33.Qb2 (33.cb6 Qb4) 33...Qc5 34.Be2? (34.Ra1-+) 34...d3 35.Nd4 (35.Kg2 de2 36.Re2-+) 35...de2 0–1. Wolf,Heinz – Junker,Reiner, Verbandsliga Nord, 1998.

6.a3 Nbd7 7.0-0 Nb6 8.Nc3 c6 9.e4 d5 10.Ne5 d4 11.Na2 Na4 12.Bc1 Ne4 13.Bd3 Nf6 14.c4 Nb6 15.Bb2 Bd6 16.Nf3 c5 17.Nc1 Bg4 18.bc5 Bc5 19.h3 Bf3 20.Qf3 Na4 21.Rb1 (21.Qb7? Rb8 (21...Nb2 22.Qb2 Rb8 23.Nb3+=) 22.Qc6 Qa5-+ (22...Rb2?! 23.Qa4 Qe8 24.Qe8 Re8 25.Rd1=)) 21...Nb2 22.Rb2 b6 23.Nb3 (23.Ne2 Re8=) 23...Ba3–/+ 24.Ra2 Bc5 25.Nc5 bc5 26.Ra6 ½–½. Baer,Werner – Felkel,Siegfried, TT–18 ETC, 2005.

6.a3 Nbd7 7.0-0 Ng4 8.Nc3 Nb6 (8...Ngf6 9.d4=) 9.h3 (9.d4 ed4 10.Qd4 Bf6=) 9...Nf6 10.e4 Bd7 (10...a5 11.d4=) 11.d4+= Bc6 (11...ed4 12.Qd4 Re8 13.Rad1+=) 12.Qd3 White intends b5 (12.Bd3 ed4 13.Nd4+=) 12...Na4 (better is 12...Ne4!? 13.Ne4 d5 14.Nf6 Bf6 15.de5 Nc4+=) 13.Na4+/- Ba4 14.b5 (14.de5 de5 15.Ne5 Qe8+/-) 14...a6 (14...d5!? 15.de5 Ne4+=) 15.de5 Nd7 (15...de5 16.ba6 b5 17.c4+/-) 16.ed6+– Bd6 (16...cd6!? 17.ba6 ba6 18.Rfd1+/-) 17.Qc3 (17.Qd4 Qf6 18.e5 Ne5 19.Ne5 Bb5+–) 17...Nf6 (17...Qf6 18.e5 Ne5 19.Ne5+–) 18.Rfd1 (18.e5 Be7 19.ef6 Bf6+–) 18...Re8 19.e5 Ne4? (19...ab5 20.Bd3 (20.ef6?! Re2 21.Nd4 Re4+/-; 20.ed6?! Re2 21.dc7 Qe8+–) 20...Be7 21.ef6 Bf6 22.Qb4+–) 20.Qc4 (20.Qd4 Be5 21.Qa4 Bb2 22.Rd8 Rad8+–) 20...Nc5 (20...Nf2 21.Rd6! (21.Qa4?! Nd1 22.Rd1 Bc5 23.Kh2 Qe7+–; 21.ed6?! Nd1 22.Rd1 ab5+–) 21...cd6 22.Qa4 (22.Kf2?! Bb5 23.Qe4 Be2 24.Qe2 de5 25.Be5 Qd5+=) 22...Nh3 23.gh3 de5 24.Qe4 (24.Be5?! Re5 25.Ne5 Qb6 26.Kh1 Qe3+–) 24...Qb6 25.Kg2+–) 21.ed6 Qd6 (21...Bb5 22.Qc5 Be2 23.dc7 Qc8+–) 22.Rd6 cd6 23.Qg4 Re4 24.Qg7 1–0. Taulien,H – Avini,A, remoteschach.de, 2003.

6.b5 (--> 4.b5 Be7 5.Nf3 0-0 6.Be2).

6.d3 a5 7.a3 ab4 (7...Nbd7 8.0-0=) 8.ab4= Ra1 9.Ba1 Na6 (9...b5 10.0-0=) 10.b5 Nc5 11.0-0 e4 (11...Bf5 12.d4 ed4 13.Nd4=) 12.de4 Nfe4 (12...Nce4 13.Nbd2=) 13.Nc3 Nc3 14.Bc3 Ne4 (14...Bf6 15.Qa1 Bc3 16.Qc3=) 15.Bd4 Re8 16.Qa1 Bf6 17.Bd3 Bd4 18.Qd4 Nc5 19.Ra1 Be6 ½–½. Pleschke,Helmut – Dietrich,Stefano, IECG, 2000.

6.d3 a5 7.b5 c6+=.

6.d3 b6 7.0-0 Bb7 8.c4 Nbd7 9.Nbd2 (9.a3 a6 (9...Re8 10.d4 ed4 11.Qd4 a6 12.Nc3=; 9...c5 10.Nc3 Re8 11.e4 a6 12.Qd2=; 9...c6 10.Nbd2 a5 11.Qc2 ab4 12.ab4=) 10.Nbd2 c5 11.Re1 Qc7 12.d4=; 9.Nc3 c5 (9...a5 10.b5 Re8 11.d4 ed4 12.Qd4+=; 9...Re8 10.d4 c5 11.bc5 bc5 12.d5=; 9...a6 10.d4 Re8 11.d5 a5 12.a3+=) 10.b5 a6 11.Qb3 Qc7 12.Rab1=) 9...c5 (9...c6 10.a3 a5 11.Qc2 ab4 12.ab4=; 9...a6 10.a3 c5 11.Re1 Qc7 12.d4=; 9...Re8 10.a3 c5 11.Rb1 Qc7 12.bc5=) 10.a3 (10.bc5 bc5 11.Rb1 Rb8 12.a3=) 10...Qc7 (10...Re8 11.Rb1 Qc7 12.bc5=) 11.h3 (11.e4 Rfc8 12.Qa4=) 11...Rac8 (11...a6 12.e4=) 12.Qc2 (12.b5=) 12...cb4 13.ab4 b5 (13...a6!?=) 14.Ra7+/- Qb8 15.Rfa1 bc4 16.dc4 (16.Nc4?! d5 17.Nfe5 dc4 18.Nd7 Nd7 19.dc4 Bb4 20.Bg7 Kg7 21.Qb2 Qe5 22.Qb4 Nc5=) 16...d5 (16...Bf3!? 17.Bf3 d5 18.Bd5 Nd5 19.Rd7 Nb4+–) 17.c5+– Bc6 (17...Rfe8 18.Bb5 Bf8 19.Bc3+–) 18.Ne5! Ne5 19.Re7 Rfe8 (19...Ng6 20.Bf6 gf6+–) 20.Be5 Re7 (20...Qb4 21.Bf6 gf6 22.Rf7 Kf7 23.Ra7 Bb7 24.Qh7 Ke6 25.Bd3+–) 21.Bb8 Rb8 22.b5! Be8 (22...Bb5 23.Rb1 Decoy) 23.b6 Bc6 (23...Re6 24.Nf3 Rc8 25.Qb2 Rc5 26.b7+–) 24.Nb3 Ne4 (24...Re4 25.Nd4 Bd7 26.c6+–) 25.Nd4 Be8 (25...Bb7 26.Ra7 Ree8 27.c6+–) 26.c6 (26.c6 Rb6 27.c7+–) 1–0. docjan50 (2225) – bernardhgaskin, gameknot.com, 2014.

6.d3 b6 7.0-0 Bb7 8.Nbd2 a6 9.c4 b5 (9...Nc6 10.a3=) 10.Qc2 c5 (10...Re8!?=) 11.bc5 +/-. weBNimzo – Feezite, ChessWorld.net, 2003.

6.d3 b6 7.0-0 c6 8.c4=.

6.d3 Nc6 7.b5= Na5 8.0-0 b6 (8...c6 9.a4=) 9.c4 c6 (9...a6 10.a4=) 10.bc6 Nc6 11.Nc3 (11.d4 e4 12.Nfd2 Bf5+=) 11...Nb4 (11...d5 12.d4 ed4 13.Nd5 Nd5 14.cd5 Qd5 15.Nd4 Nd4 16.Bd4=) 12.Ba3 Na6 13.d4 Bb7 (better is 13...Re8!?+=) 14.de5+/- de5 (better is 14...Ne8!?+/-) 15.Qd8+– Bd8 (15...Rfd8?? 16.Be7 Rd7 17.Bf6 gf6 18.Rfd1+–) 16.Bf8 Kf8 17.Ne5 Bc7 18.Bf3 Bf3 19.Nf3 (worse is 19.gf3 Be5 20.Rac1 Nc5–/+) 19...Rc8 20.Rfd1 (20.Rfd1 Nc5 21.Rab1+–; 20.Rad1 Bb8+–) 1–0. Schellen,Anton – Vladimirov,Dimitar, FICGS, 2006.

6.d3 Nd5 7.a3 f5 8.c4 Nf6 9.0-0 Ne8 (9...a5 10.b5=) 10.Nc3+= f4 11.d4 fe3 12.fe3 ed4 13.ed4 Bg4 14.Qc2 Nf6 (better 14...Nc6!?+/-) 15.Ng5+- Be2?? (better 15...g6+-) 16.Rf6 (16.Rf6 Bd3 17.Qd3 g6 18.Rg6 hg6 19.Qg6 Kh8 20.Qh7; 16.Qe2?! Qd7+-) 1-0. bulent_2010 (2555) - bobby fissure (2245), ChessWorld.net, 2012.

6.d3 Nbd7 7.0-0=.

6.d3 Bf5 7.Nbd2 Re8 (7...a5 8.b5=) 8.0-0= e4 (8...h6!?=) 9.Nd4 Bg6 10.f4 (better 10.de4!? Nbd7 11.f3+–) 10...ef3= 11.Bf3 d5 12.a3 (12.Bc3 Nbd7=) 12...c5 (12...Nbd7 13.N2b3=) 13.bc5= Bc5 14.N2b3 Bd4 (14...Bb6 15.Qd2=) 15.Nd4 Re3 16.Qd2 Re8 17.Qb4 (17.Rae1!?+=) 17...Nbd7= 18.a4 (18.Rae1 Qc7=) 18...Qb6 (18...Ne5!?=+) 19.Qb6= ab6 20.Nb5 Rec8 21.Rf2 Nc5 Exerts pressure on the isolated pawn (21...Bh5 22.Nd6 Rc6 23.Nf5+=) 22.Bf6+= gf6 23.Bd5 Rd8 24.Nc3 (24.Bc4 Kg7+=) 24...b5 25.a5 b4 26.Ne4 Be4 27.de4 Kg7 28.Rf5 Re8 The isolani on e4 becomes a target (28...Ra7 29.Rff1+=) 29.Raf1+= Ne4? (better 29...Ra6!?+=) 30.Bb7+– Ra7 31.a6 Re7? (better 31...Re6 32.Re1 Nc3 33.Re6 fe6+–) 32.Re1 Nd6 33.Re7 Nf5 34.Re4 Nd6 (34...Kf8 35.Rb4 Ng7 36.Rc4+–) 35.Rb4 Ne8 (35...f5 36.Kf2 Ne4 37.Ke3+–) 36.c4 (36.Rb6 Nc7+–) 36...Nc7 (36...Kf8 37.Rb6+–) 37.Rb6 Kg6 (37...h6 38.c5+–) 38.c5 (better 38.Be4 Kg5 39.Rb7 Ra6 40.Rc7 f5+–) 38...Kf5 39.Bc8 (better 39.Kf2 Ke5+–) 39...Ne6 (39...Ke5 40.Kf2+–) 40.Re6! fe6 41.Bb7 Ke5 42.Kf2 f5 (42...h6 43.Ke3+–) 43.h4 f4 44.g3 fg3 45.Kg3 Ra6 (45...h6 46.Kg4 h5 47.Kf3 Ra6 48.Ba6+–) 46.Ba6 Kd5 47.Be2 Kc5 48.Kf4 (48.Kg4 Kb4+–) 48...Kd6 (48...Kd4 49.Kg5 e5 50.Kh6+–) 49.Kg5 Ke7 (49...e5 50.Kh6 e4+–) 50.Kh6 Kf8 51.Kh7 Kf7 52.Bh5 Kf6 53.Bg6 e5 54.h5 Kg5 55.h6 Kf6 56.Bd3 Kf7 57.Bc4 Kf8 58.Kg6 e4 (58...Ke7 59.h7 Kd6 60.h8Q Kc5 61.Bg8 Kd6 62.Qf6 Kc5 63.Qe5 Kb6 64.Qd4 Kb7 65.Bd5 Kc7 66.Qc5 Kd7 67.Kf6 Kd8 68.Be6 Ke8 69.Qe7) 59.h7 e3 (59...Ke7 60.h8Q Kd7 61.Qe5 Kc6 62.Qb5 Kc7 63.Qc5 Kb7 64.Bd5 Ka6 65.Bc6 e3 66.Qb5 Ka7 67.Qb7) 60.h8Q Ke7 61.Qe5 Kf8 (61...Kd7 62.Bb5 Kc8 63.Qe7 Kb8 64.Ba6 e2 65.Qb7) 62.Qd6 Ke8 63.Bb5 1–0. Nguyen,Tien Phuc (1990) – Bui,Nhat Quang (1975), 2015.

6.d3 Bg4 7.0-0 c6 8.c4 Nbd7 9.Nbd2 a5 10.b5 cb5 11.cb5 a4 12.Nc4 Nb6 13.Rc1 Bd7 14.Ba3 Bb5 15.Nfe5 (15.Nb6 Qb6 16.Ne5 de5 17.Be7 Rfe8 18.Bf6 Qf6= (worse 18...gf6 19.Bg4+=)) 15...de5=+ 16.Be7 Qe7 17.Nb6 Ra6 Black plans e4 18.Nc4 Rc6 19.Rc2 e4 20.Qb1 Ba6 21.d4 Rfc8 22.Rfc1 Qe6 23.Ne5 Rc2 24.Rc2 Be2 25.Re2 Nd5 26.Rc2 f6 27.Nc4 Qd7 28.h3 b5 29.Nd2 Rc2 30.Qc2 f5 31.Qc5 h6 32.a3 g6 33.g3 Kh7 ½–½. Woelfelschneider,Peter – Felkel,Siegfried, TT–18 ETC, 2005.

6.d3 Bg4 7.0-0= Nbd7 8.h3 (8.Nbd2 a5 9.b5 a4=) 8...Be6 (8...Bh5 9.c4=) 9.d4 (9.Ng5 Bf5=) 9...e4 10.Nfd2 c6 (10...d5 11.a3=+) 11.c4 d5 (11...d5 12.c5 b6=). Munkwitz,Wolfgang – Felkel,Siegfried, TT–18.52 ETC, 2005.

6.d3 Bg4 7.Nbd2 Nbd7 8.c4 a5 9.a3 c6 10.0-0 ab4 (10...Qb6 11.Qb3=) 11.ab4 Qc7 12.Qc2 (12.h3 Bh5=) 12...d5 13.Qc3 Qd6 (13...dc4 14.dc4 (worse is 14.Qc4 b5 15.Qc2 Nd5–/+) 14...c5 15.b5=) 14.c5 Qc7 15.Rfe1 (15.h3 d4 16.ed4 Nd5+/-) 15...Ra1= 16.Ba1 b6 (16...Ra8!?=) 17.Ne5+/- Ne5 (17...Be2 18.Nd7 Qd7 19.Re2+/-) 18.Qe5+= Qe5 19.Be5 Be2 20.Re2 Nd7 21.Nf3 (21.Bd6 Bd6 22.cd6 Re8+=) 21...bc5= 22.bc5 Nc5 23.Nd4 Rc8 24.Nf5 Bf8 25.d4 (25.Rd2 g6 26.Ng3 Ra8=) 25...Ne6 (25...Nd3 26.Bd6=) 26.h4 (26.Ra2 c5 27.dc5 Bc5+=) 26...f6= 27.Bd6 (27.Bg3 c5 28.dc5 Bc5=) 27...Bd6 (27...g6 28.Ne7 Be7 29.Be7=) 28.Nd6+= Rd8 29.Nb7 (29.Nf5 c5 30.dc5 Nc5+=) 29...Rb8= 30.Na5 Rb6 (30...c5 31.dc5 Rb1 32.Kh2 Nc5 33.Nc6=) 31.Rc2+= Nd8 32.Rc3 Ra6 33.Rc5 (33.Nb3 Ra3=) 33...Rb6 (33...Kf7 34.Nb3=) 34.Rc3 (34.Rc1 Kf7=) 34...Ra6+= 35.Ra3 (35.Nb3 Nb7=) 35...Nb7= 36.Nc4 Ra3 37.Na3 Kf7 38.Nc2 Ke6 (38...c5 39.dc5 Nc5 40.h5=) 39.Nb4 (39.g4 f5 40.Nb4 Nd8 41.gf5 Kf5=) 39...Kd6 40.Nd3 c5 41.dc5 Nc5 42.Nc5 Kc5 43.Kf1 d4 44.Ke2 Kd5 (44...h5 45.Kd3 de3 46.Ke3=) 45.Kd3 de3 46.Ke3 Ke5 ½–½. Saradjen,Janko (2205) – Brcar,Andrej (2075), SLO–chT West, 2001.

6.d4 ed4 7.Bd4 (7.Qd4 d5 8.Qc3 a5 9.ba5 c6=) 7...c5 (7...Nc6 8.b5 Nd4 9.Nd4+=) 8.Bb2 (8.Bc3 Ne4 9.bc5 dc5 10.Qd8 Rd8+=) 8...cb4 9.0-0 Nc6 10.c3 a5 (10...Be6 11.cb4 Nb4 12.Qd2–/+) 11.cb4 ab4 12.Nd4 (12.Qd3 Be6+=) 12...Nd4 (12...Be6 13.Qd2+=) 13.Qd4= Be6 (13...Qa5 14.a3 b3 15.Nd2=) 14.Qb4 Ba2 15.Nc3 Be6 16.Ra8 (16.Qb7? Rb8 17.Qf3 Rb2-+) 16...Qa8 17.Ra1 (17.Bf3 Qb8=) 17...Qb8 18.Bf3 Re8 19.Qb7 (19.Bb7? Bc8-+) 19...d5 (19...Qb7 20.Bb7 d5 21.Nb5=) 20.Qb8 Rb8 21.Bc1 (21.Nd1 Ne4=) 21...h6 (21...Bd6 22.Ne2=) 22.h3 (22.Ne2 Bg4=) 22...Rc8 (22...Bd6 23.Ne2=) 23.Ne2 (23.Ba3 Kf8 24.Be7 Ke7=) 23...Ne4 24.Ra7 (24.Nd4 Bf6=) 24...Bh4 (24...Bf6 25.Ba3+=) 25.g3= Bf6 26.h4 (26.Kg2 Ng5 27.g4 Rc4=) 26...Rc2 (26...g5 27.hg5 hg5+=) 27.Kg2 (better is 27.Ba3!?+=) 27...Nc3–/+ 28.Rc7 Re2 29.Be2 (better is 29.Rc3!? Rf2! 30.Kf2 Bc3 31.Ba3–/+) 29...Ne2-+ 30.Bd2 (30.Kf3 Be5 31.Rc2 Nc1 32.Rc1 g5-+) 30...d4 31.e4 (31.ed4 Nd4 32.Be3 g5-+) 31...Nc3 32.f3 (32.Kf3 g5 33.Bc3 dc3-+) 32...Nb5 (32...Kh7 33.Kf2-+) 33.Rc5 Na3 34.e5 (34.Kf2 Be7 35.Rc7 Bd6-+) 34...Bd8 35.Kf2 (35.Ba5 Ba5 36.Ra5 Nc2-+) 35...Bb6 36.Rc1 (36.Rc6 Nc4 37.Ke1 d3-+) 36...d3 (36...Nc4!? 37.Rb1-+) 37.Ke1? (37.Be3 d2 38.Rd1 Be3 39.Ke3 Nc4 40.Ke2-+) 37...Nc2 (37...Nc2 38.Kd1 Bd5-+) 0–1. Jusic,Zdenko – Horak,Michal, Gyor junior, 1991.

6.d4 e4 7.Nfd2 Nc6 8.b5= Nb4 (8...Na5 9.c4=) 9.a3+= Nbd5 10.c4 Nb6 11.a4 Nbd7 (11...d5 12.c5 Nbd7 13.Nc3=) 12.0-0 a6 (12...Re8 13.Nc3+=) 13.Nc3+/- ab5 14.ab5 (14.Nde4?! bc4 15.Nf6 Nf6+=) 14...Ra1 15.Qa1 Nb6 16.Nce4 Ne4 17.Ne4 Nd7 (17...d5 18.cd5 Nd5 19.Ba3+/-) 18.d5 b6? (18...f5 19.Ng3 Bf6 20.Bf6 Rf6 21.Qd4+–) 19.Qa8 (better is 19.Bg7!? Re8+–) 19...Bf6 (19...f5 20.Ng3+–) 20.Nf6+– Nf6 21.f3 (21.Qa1 Ne8+–) 21...Nd7 22.Bd4 Nc5 23.Bc5 (23.Qa3 Qg5+–) 23...dc5 24.e4 Re8 25.Rd1 g6 (25...Kf8+/-) 26.Kf2 (better is 26.Qb8!?+–) 26...Qh4+/- 27.Kg1 (better is 27.Kf1 Qh2 28.Qc6+/-) 27...Qg5?? (27...Qd8 28.Bd3 f5+–) 28.Qb8 (better is 28.Qc6 Re7 29.d6+–) 28...Kf8?? (better is 28...Qe3 29.Kf1 f5+/-) 29.Qc7+– Bh3 (29...Qf6 30.d6 Qd8 31.Qd8 Rd8 32.f4+–) 30.Qg3 (30.Bf1!? Qe3 31.Kh1 Kg7+–) 30...Qg3 31.hg3 Bd7 (31...Bd7 32.Ra1 Ke7+–). kamera – ProteanSelf, GameColony.com, 2002.

6.d4 e4 7.Nfd2 d5 8.a3 =+.

6.d4 e4 7.Nfd2 Re8 (7...d5 8.a3+=) 8.c4= Bf8 (8...Na6!? 9.Qb3 c5=) 9.Nc3+= Bf5 10.g4 Bg6 11.h4 h6 12.g5 hg5 13.hg5 Nh7 14.Qc2 (14.Bh5!? Bf5 15.Nde4 Ng5 16.Ng5 Qg5 17.Kd2+/-) 14...Ng5 15.0-0-0 a5 (15...Nc6!? 16.Nd5 a5 17.ba5 Bf5=) 16.b5= Nf3? (better is 16...Nd7=) 17.Nde4+– Ng5 (17...Nh4!?+–) 18.Bd3 Ne4 19.Be4 Be4? (better is 19...Re4 20.Ne4 d5 21.cd5 Qd5+–) 20.Ne4 g6 (20...f6 21.Ng3 Kf7+–) 21.d5 Bg7 22.Bg7 Kg7 23.Qc3 f6 (23...Re5 24.f4 Nd7+–) 24.Nf6! Re5 (24...Qf6) 25.Ng4 Qe7 (25...Nd7 26.f4 a4 27.Rdf1+–) 26.f4 (26.f4 Nd7 27.Rh6+–) 1–0. Nadanian,Ashot – Eljanov,Pavel, Internet Chess Club 3m + 0s blitz, 2001.

6.h3 a6 7.c4 (better is 7.0-0+=) 7...Bg4?? (better is 7...e4 8.Nd4 c5+=) 8.hg4+– Ng4 9.Qc2 Nc6 (9...f5+–) 10.Qh7 1–0. GuestZSWT – ikaiberi, freechess.org, 2016.

6.h3 c6 7.c4 (7.0-0 Qb6 8.Bc3 Nd5+=) 7...Be6 (7...e4 8.Nd4+=) 8.0-0 h6 (8...a5 9.b5=) 9.a4 (9.Nc3 Nbd7=) 9...Nbd7 10.d3 (10.a5 Rb8=) 10...Ne8 (10...Qc7 11.Nc3=) 11.Nbd2 f5 (11...a5 12.b5=) 12.e4 (12.Bc3 Nef6=) 12...fe4 (12...a5 13.b5=) 13.de4 c5 (13...a5 14.b5=) 14.b5 Kh7 (14...a6 15.Qb3=) 15.Nh2 (15.Qc2+=) 15...g5 (15...Nef6!?=) 16.Bg4+/- Ng7 17.g3 (17.a5 a6 18.b6 Nf6+/-) 17...Bg4 (17...a6 18.Bc3+=) 18.Ng4 Nf6 (18...a6 19.Qe2+=) 19.Ne3 (19.a5 a6 20.b6 Qd7+=) 19...Qd7 (19...a6 20.Qe2+=) 20.Kg2 Ne6 21.Nf5 (21.Ra3 Nd4+=) 21...Nd4 (21...Ne4 22.Ne7 Nd2 23.Qc2 e4+/-) 22.Bd4+= cd4 23.Qe2 (23.f3 Ne8+=) 23...Rae8 (23...Ne4 24.Qe4 d5 25.Qe5 Rf5 26.Qd4=) 24.Rac1 (24.a5 Ne4 25.Qe4 d5 26.cd5 Qf5+=) 24...Bd8 (24...Ne4 25.Qe4 Qf5 26.Qb7+=) 25.Nb3 (25.Qd3 Qe6+=) 25...b6 (25...Ne4 26.Qe4 Qf5 27.Qb7 Rf7 28.Qd5=) 26.Nd2 (26.f3 Ng8+=) 26...Ng8 (26...Ne4 27.Ne4 Rf5 28.Qd3+/-) 27.g4 (27.Qh5!?+=) 27...Ne7= 28.Ne7 Re7 29.f3 (29.Rcd1 Ref7=) 29...Qe6 (29...Ref7 30.Qd3+=) 30.Ra1 Kg6 (30...Ref7 31.Qd3=) 31.Rh1 (31.Kf2 Qf6=) 31...Rh7 (31...Ref7 32.Kf2=) 32.Nf1 (32.Kf2 Rf4=) 32...h5 (32...Rhf7 33.Nd2=) 33.Ng3= h4 34.Nf5 Rc7 Attacking the backward pawn on c4 35.Rhc1 Rc5 36.Ra2 Rf7 37.Qd3 (37.Rb2 Kh7=) 37...Rfc7 The pressure on the backward pawn c4 grows 38.Qb3 (38.Rac2 Kh7=) 38...Rc8 (38...Rc4 39.Nd6 Rc2 40.Qc2 Rc2 41.Rac2=) 39.Qb4 (39.Rac2 Kh7=) 39...Rc4+= Black launches an attack. 40.Rc4 Rc4 41.Qd6 (41.Qb3 Kf6+=) 41...Qd6 42.Nd6 Rc1 43.Nf5 Kf6 (43...Kf7 44.Kh2–/+) 44.Kf2 (44.Rd2 Be7–/+) 44...Be7 45.Ne7 Ke7 46.a5 (46.Rb2 Rh1 47.Kg2 Ra1-+) 46...Rc5 (46...Rb1 47.Rc2 Rb5 48.ab6 ab6 49.Rc7 Kd6 50.Rg7 Rb2 51.Ke1-+) 47.ab6 ab6 48.Ra7 (48.Rb2 Kd6-+) 48...Kf6 49.Ra8 (49.Ke2 Rb5 50.Rb7 Rb2 51.Kd1 Rb3-+) 49...Rb5 50.Rf8 (50.Rb8 Rb2 51.Ke1 Kf7-+) 50...Kg7 51.Rf5 Kg6 52.Rf8 (52.Ke2 Rc5-+) 52...Rc5 (52...Rb2 53.Kg1-+) 53.Ke2 b5 (53...Ra5 54.Kd3-+) 54.Kd2 (54.Rg8 Kh6-+) 54...b4 (54...b4 55.Rg8 Kf6 56.Rf8 Ke6-+) 0–1. Hirt,Robert – Junge, corr DDR, 1985.

6.h3 e4 7.Nh2+=.

6.h3 h6 7.c4 (7.0-0 e4 8.Ne1 Be6=) 7...a6 (7...e4 8.Nd4+=) 8.d3 Bf5 (8...Nc6 9.a3=) 9.0-0 Nc6 10.Qb3 (10.a3 Re8=) 10...e4 (10...Re8 11.Nbd2=) 11.Nd4 (11.de4 Ne4 12.Nc3 Bf6=) 11...Nd4 12.Bd4 ed3 (12...c5 13.de4 Ne4 14.bc5 dc5 15.Bb2=) 13.Bd3 Bd3 14.Qd3 c6 (14...c5 15.Bc3=) 15.Qc2 (15.Nc3 b5+=) 15...d5 (15...c5 16.bc5 dc5 17.Bc3=) 16.a3 (16.Rd1 Bb4 17.Qb2 Be7 18.Qb7 Qd6 19.cd5 Nd5=) 16...Bd6 (16...a5 17.Rd1=) 17.Nd2 (17.Rd1 Qe7+=) 17...Bc7 0–1. DEFFM – Guestbabyooey, freechess.org, 2016.

6.0-0 a6

7.Nc3 Be6 8.Ng5 Nbd7 9.d4 h6 10.Ne6 fe6 11.Bg4 Ng4 12.Qg4 ed4 (12...Kf7 13.Qf3 Kg8 14.Qb7+=) 13.Qe6+/- Kh8 14.ed4 Bf6 15.Nd5 Re8 16.Qf5 c6 17.Nf4 Rf8? ( 17...a5 18.Ne6 Qe7+–) 18.Ng6+– Kg8 19.Nf8 Nf8 20.Rfe1 d5 21.Qh5 Qc7 22.c3 Qf4 (22...Qf7 23.Qf3+–) 23.Bc1 Qd6 24.a3 Rd8 (24...a5 25.Qf3+–) 25.Ra2 Ne6 (25...Rd7 26.Rae2+–) 26.Rae2 Nf4 27.Re8 Re8 28.Re8 Qf8 (28...Kh7 29.Qf5 Ng6+–) 29.Rf8 Kf8 30.Bf4 (30…Ke7 31.Qf5+–) 1–0. orane (1995) – polo101, Live Game Caissa's Web, 2004.

7.c4 Nc6 8.a3 Be6 9.d4 e4 10.Nfd2 Bf5 11.d5 Na7 12.Nc3 h6 13.f3 ef3 14.Bf3 Qd7 15.e4 Bg6 16.Re1 b5 17.Qe2 Rab8 18.Rac1 Rfe8 19.Qf2 c6 20.Ne2 Bf8? (better is 20...bc4!? 21.Nf4 Bh7+/-) 21.Bf6+– gf6 22.Qg3 Kh7 23.Nf4 bc4 24.Rc4 c5 25.Bh5 Bg7 (25...Kg8 26.Ng6 (worse is 26.Bg6 fg6 27.Qg6 Qg7+–) 26...fg6 27.Bg6+–) 26.Bg6 (better is 26.Ng6!? f5 27.Nh4 fe4 28.Ne4 cb4+–) 26...fg6 27.Qg6 Kg8 28.Ne6 Nb5 29.bc5 (29.Ng7?! Qg7 30.Qg7 Kg7 31.bc5 Na3+–) 29...Re6 (29...Na3 30.Rc3 (30.Ng7?! Qg7 31.Qg7 Kg7+–; 30.Qg7?! Qg7 31.Ng7 Kg7+–) 30...Nb5 31.Rg3 (31.Qg7?! Qg7 32.Ng7 Kg7 33.Rg3 Kh7+–; 31.Ng7?! Qg7 32.Qg7 Kg7 33.Rg3 Kh7+–) 31...Re6 32.de6+–) 30.de6 Qe6 31.Re3 (better is 31.a4 Na7 32.cd6 Qd6+–) 31...d5 32.Rg3 Rb7 33.Rb4 Qe7 34.h3 Rc7 35.Nb3 Qf7 36.Qf7 Rf7 37.ed5 Na3 38.d6 Nb5 39.Nd4 1–0. Kappel,Ray – Recio,Luis, 35. LSS No Engine Cup Preliminary, 2011.

7.c4 Nc6 8.a3 Bf5 9.d4 ed4 10.Nd4 Nd4 11.Qd4 Ne8 12.Nc3 Bf6 13.Qd2 Bg6 14.Bf3 (14.f4 Bc3 15.Qc3 Be4+=) 14...c6 15.Rfd1 Qe7 16.a4 White plans b5 16...Rd8 (16...Be5 17.g3=) 17.b5+= Qc7 18.Rac1 Be5 (18...Qb6 19.Ba3+/-) 19.g3 (better 19.bc6 bc6 20.Nb5 ab5 21.Be5 bc4 22.Rc4+-) 19...Nf6= 20.Bg2 Rfe8 (20...ab5 21.cb5 c5 22.Nd5 Nd5 23.Bd5 Bb2 24.Qb2+=) 21.Ba3 (21.bc6 bc6 22.f4 Bc3 23.Bc3+/- (worse 23.Rc3 Ne4 24.Be4 Be4=+; worse 23.Qc3 h6=)) 21...ab5 22.ab5 Qa5 23.Bb2 Qb4 (better 23...d5!? 24.cd5 cd5 25.Nd5 Qd2 26.Rd2 Rd5 27.Bd5 Bb2 (27...Nd5?? 28.Be5 Be4 29.Rc5+-) 28.Bf7 Kf7 29.Rc7 Kg8 30.Rb2 Be4=) 24.bc6 bc6 25.Bc6 Re7 26.Nd5?? (better 26.Bg2+/-) 26...Nd5-/+ 27.Bd5 (better 27.Be5!? Qd2 28.Rd2-/+) 27...Qb2-+ 28.Qa5 (28.c5 Rc7-+) 28...Rc8 (28...Rb8 29.c5 dc5 30.Rc5-+) 29.Qa6 (29.c5 Rec7 30.c6 Bc2-+) 29...Rec7 30.Qa5 (30.Ra1 Qe2 31.Re1 Qg4-+) 30...Qb8 (30...Bc2!? 31.Rf1-+) 31.e4 Ra7 32.Qd2 Qb2 33.Rc2 (33.Qb2 Bb2 34.Rb1 Bh5-+) 33...Qb6 34.Kg2 Qc5 (34...Bh5!? 35.f3 h6 36.Qf2-+) 35.f4 Bf6 36.Qe2 (36.Rb1 h6-+) 36...h6 (36...Re8 37.Qf3 Ra3 38.Rd3 Rd3 39.Qd3-+) 37.Qg4 White intends f5 (37.f5 Bh7 38.Rb1-+) 37...Rb8 (37...Bh7 38.Rb1 Re8 39.f5-+) 38.Rdd2?? (38.Qg6 Qd5!? 39.Rd5 (39.cd5? fg6 40.Re1 g5-+) 39...fg6 40.Rd6-/+) 38...Kh8 39.h4 (39.f5 Bh7-+) 39...Qc8 (better 39...Rb1!? 40.Rd1 Rd1 41.Qd1-+) 40.f5 (40.Qc8 Rc8 41.Ra2 Rcc7-+) 40...Bh7 41.Bf7 (41.Qf4 Be5 42.Qe3-+) 41...Rf7 42.Rd6 Rfb7 43.Rdd2 Rb2 (better 43...Be5 44.Rd5 Qc7 45.Qe2-+) 44.Qe2 (44.Rb2 Bb2 45.Qe2 Be5-+) 44...Rc2 45.Rc2 Qc5 (45...Rb3 46.Rd2 Qc6 47.g4-+) 46.Kh3 (46.Qd3 Bg8-+) 46...Bg8 (better 46...Rb3 47.Qd1 Bg8-+) 47.g4 (47.Qf2 Qf2 48.Rf2 Bc4 49.Rd2-+) 47...Rb3 48.Kg2 Qe5 49.Kf1 (49.Qf3 Rf3 50.Kf3 Bh4 51.Ke3 Bg5 52.Kf2 Qh2 53.Kf3 Qf4 54.Kg2 Qe4 55.Kg3 Qc2 56.f6 Bc4 57.f7 Qd3 58.Kg2 Qd2 59.Kg3 Bf4 60.Kh4 Qh2) 49...Qg3 50.Qg2 (50.Qf2 Rb1 51.Ke2 Bc4 52.Rc4 Rb2 53.Kd1 Qd3 54.Ke1 Rb1 55.Rc1 Rc1) 50…Rb1 (50...Rb1 51.Ke2 Re1 52.Kd2 Qe3) 0-1. Osmak,Iulija (2385) - Yakimova,Mariya (2285), World Blitz Women (7), 2019.

7.c4 Re8 8.h3 (8.Nc3 a5 9.b5 Be6=) 8...b6 9.d4 ed4 10.Bd4 c5 11.Bc3 d5 12.Nbd2 (12.bc5!? bc5 13.Re1=) 12...cb4–/+ 13.Bb2 Bb7 14.Rb1 a5 (14...Nc6 15.Nd4–/+) 15.Qc2+= Nbd7 16.Qf5 Bf8 17.Bd3 Bc8 18.Bc2 (18.Qf4 dc4 19.Bc4 Bb7=) 18...Nc5 (18...dc4!? 19.Nc4 Ne5–/+) 19.Qg5+= Nce4 (19...dc4 20.Bf6 Qf6 21.Nc4-+) 20.Bf6 (20.Ne4 de4 21.Rfd1 Qe7 22.Bf6 Qf6 23.Be4 Re4=) 20...Nf6 21.Nd4 h6 22.Qg3 Ne4 23.Ne4 de4 24.f3 Bd6 25.f4 Bc5 26.Rbd1 Qf6 27.Qf2 Ba6 28.Bb3 Red8 29.Kh1 Bb7 30.Kh2 Rd7 31.Ba4 Rd6 32.g4 (32.Rd2 Rc8-+) 32...Rad8-+ 33.Nf5 Rd1 34.Rd1 Rd1 35.Bd1 Qd8 36.Nd4 Qd6 37.Bb3 g6 38.h4 Kg7 39.Nb5 Qd3 40.Nd4 Kh7 41.Kh3?? (better is 41.f5-+) 41...Bd4 42.Kh2 (42.f5 Be3 43.fg6 Kg6 44.Qf5 Kg7 45.Qe5 Kh7-+) 42...Qe3 (better is 42...Be3!? 43.Qg2-+) 43.Qe3 Be3 44.Kg3 0–1. Careta,A – Capelles,R, Social Avinyo, 1994.

6.0-0 c6

7.a3 Nbd7 ½–½. Madina Yadarola,M1 (2270) – Perez,Max (2275), Villa Martelli ARG, 2013.

7.a3 e4 8.Ne1 a5 9.b5 d5 10.Nc3 Qc7 11.f3 Be6 12.h3=.

7.a4 Nbd7 8.c4 (8.b5 Qc7=) 8...a6 (8...e4 9.Ng5+=) 9.b5 ab5 10.ab5 Ra1 11.Ba1 e4 (11...cb5 12.cb5 e4 13.Nd4=) 12.Nd4 Ne5 13.Nb3 (13.f4 ef3 14.Nf3 Nf3 15.Bf3 d5=) 13...Ng6 (13...Be6!?+=) 14.d3= ed3 15.Bd3 Ne5 16.Nd4 Be6 (16...Bg4 17.f3 Bd7 18.Nc3=) 17.Qe2 (17.Ne6!? fe6 18.Be5 de5 19.Nc3+=) 17...Qd7 18.Nc3 Rd8 19.bc6 bc6 (worse is 19...Nc6 20.Nd5+/-) ½–½. Hauck,Bjoern – Popis,Imants, RH–chD Bingen, 1990.

7.a4 e4 8.Ne1 =.

7.Nc3 Qb6 =.

7.Nc3 Be6 =.

7.Nc3 Re8 8.a4 (8.Rb1 b5 9.e4 a5 10.a3 ab4 11.ab4 Na6 12.Ba1+=) 8...Nbd7 (8...Bf5 9.a5 Qc7 10.b5 d5 11.b6 Qd6 12.d4=) 9.b5 d5 10.Ng5 Bd6 11.d4 h6 12.de5+=.

7.Nc3 Bf5 A) 8.a3 Nbd7 9.Ng5 Nd5 10.Nge4 Nc3 11.Nc3 Nf6 12.f4=; B) 8.Nh4 Bd7 (8...Be6 9.Nf3 Qb6 10.a3 a5 11.b5 cb5 12.Bb5=) 9.Nf3 Qb6 10.Rb1 Bf5 11.a3 Qc7 12.d3=; C) 8.d3 Qb6 9.a3 a5 10.Na4 Qc7 11.c4 Nbd7 12.b5=.

7.c4 a5 8.b5 c5 (8...e4 9.Nd4 d5 10.d3 c5 11.Nc2 dc4 12.de4=) 9.Nc3 Nbd7 (9...Bf5 10.d4 cd4 11.ed4 e4 12.Nd2+=) 10.d4 ed4 (10...Qc7 11.Qd3 Re8 12.Rae1+=) 11.ed4 Re8 12.dc5 (12.Re1+=) 12...dc5 13.Re1 b6 14.Nd5 Bb7 15.Ne7 White is in command 15...Re7 16.Nh4 Ne8 (16...Re6 17.Bd3=) 17.Bf3 Re1 18.Qe1 Qh4 19.Bb7 Rb8 20.Rd1 Nef6 (20...Rb7!? 21.Rd7! Rb8+=) 21.Bc6 Nf8 22.Qe2 (22.Qe7 Ne6 23.Qa7 Rd8 24.Rd8 Nd8+–) 22...Ne6 23.g3 Qh5 (23...Qh6 24.Qd2 Ng4 25.Qh6 Nh6 26.Be5+/-) 24.Qh5 Nh5 25.Be5 Rc8 26.Rd7 Nd4 (better is 26...h6+–) 27.Bd5 (27.Bd4?! cd4 28.Rd4 Nf6+–) 27...Nf6 28.Bf6 (28.Bf6 gf6 29.Rf7+–; 28.Rf7 Nd5 29.Rg7 Kf8 30.cd5 Nf3 31.Kf1 Ne5 32.Rh7 Nf7+=; 28.Bf7?! Kh8 29.Bf6 gf6+–) 1–0. Bulcourf,Carlos – Azzi,Adrian, Tourmanent (team) XI Buenos Aires, 1995.

7.c4 b6 8.d3 Bb7 9.Nbd2 Nbd7 10.a3 Qc7 11.Rc1 a6 (11...c5 12.d4 (12.Qc2 cb4 13.ab4 a5 14.b5 Rfe8 15.d4=; 12.e4 Rfc8 13.b5 a6 14.ba6 Ra6 15.Rb1=; 12.Qb3 cb4 13.Qb4 Rac8 14.d4 Rfe8 15.Rfd1=; 12.Qa4 a6 13.e4 Bc6 14.Qc2 Nh5 15.Nb1=) 12...cb4 13.ab4 Rfe8 14.b5 a6 15.ba6=) 12.e4 (12.Nh4 Rae8 13.Nf5 Bc8 14.f4 ef4 15.Rf4+=; 12.d4 c5 13.d5 cb4 14.ab4 a5 15.Qa4=) 12...Nh5 (12...c5 13.Nh4 Rfe8 14.Nf5 Nf8 15.Bg4=) 13.Ne5 (13.d4 Nf4 14.Re1 c5 15.bc5=) 13...Ne5 14.Be5 de5 15.Bh5 c5 16.Rb1 g6 17.Be2 cb4 18.ab4 Rad8 19.Qb3 Bc8 20.Nf3 Be6 21.Qb2 Bf6 22.Nd2 Bg7 23.Nf3 h6 (23...Bf6!?=) 24.Rfd1 f5 25.Qc1 g5 26.h3 (26.ef5 Bf5 27.Qe3 Qd6+/-) 26...f4 (26...g4 27.hg4 fg4 28.Nh2+=) 27.Kh2 g4 28.hg4 Bg4 29.Ng1 Qe7?? (better is 29...Be2 30.Ne2 f3+/-) 30.Bg4+– Qh4 31.Bh3 Qf2 32.Qd2 Qg3 33.Kh1 Rf6 (33...Qg6 34.Nf3+–) 34.Qe1 (better is 34.Nf3+–) 34...Qe1 35.Re1 Rd3 36.Rbd1 Rfd6 (36...Rd1 37.Rd1 Rc6+–) 37.Rd3 Rd3 38.Nf3 (better is 38.Ra1!? Kf7 39.Ra6 Rd4 40.Rb6 Re4+–) 38...Kf7 39.Kg1 (39.Rc1 Rd6+–) 39...Ke7 (39...Rc3!? 40.b5 a5+–) 40.Ra1 a5?? (40...Rb3+–) 41.ba5 ba5 42.Ra5 Re3 43.Bf5 (worse is 43.Ne5 Re4 44.Ra7 Kd6 45.Rg7 Ke5 46.Re7 Kd4 47.Re4 Ke4+–) 43...Rc3 44.Ne5 Kd6 (44...Be5 45.Re5 Kd6 46.Rd5 Kc7+–) 45.Rd5 Kc7 (45...Ke7 46.Rd7 Kf8 47.Ng6 Kg8 48.Be6 Kh7 49.Nf4+–) 46.Rd7 (46.Rd7 Kb6 47.Rg7+–) 1–0. Kuhmann,Heinz – Roschk,Steffen, Erlangen op, 1999.

7.c4 b6 8.d3 Bb7 9.Nbd2 Nbd7 10.a3 Qc7 11.d4 A) 11...c5 12.bc5 (12.Qc2 ed4 13.ed4 d5 14.bc5 bc5 15.Rfe1=) 12...bc5 13.d5 Rfb8 14.Rb1 Bc8 15.Bd3=; B) 11...a5 12.Qc2 ab4 13.ab4 c5 14.bc5 bc5 15.Qf5=.

7.c4 b6 8.d3 Bb7 9.Nbd2 Nbd7 10.a3 Qc7 11.Nh4 A) 11...a5 12.Nf5 (12.f4 ab4 13.Nf5 Rfe8 14.ab4 Ra1 15.Qa1+=; 12.Qc2 g6 13.Nhf3 d5 14.Rfb1 ab4 15.ab4=; 12.d4 Rfe8 13.Nf5 ab4 14.ab4 Ra1 15.Qa1=) 12...Rfe8 13.f4 ef4 14.Rf4 ab4 15.ab4+=; B) 11...c5 12.f4 (12.e4 g6 13.Nhf3 Ne8 14.Re1 f5 15.Rb1=; 12.Nf5 Rfe8 13.e4 Nb8 14.Ne7 Re7 15.b5=) 12...d5 13.Nf5 Rfe8 14.bc5 ef4 15.cb6+/-; C) 11...a6 12.f4 (12.Nf5 Rfe8 13.d4 a5 14.b5 cb5 15.cb5+=; 12.d4 Rfe8 13.Nf5 ed4 14.Bd4 c5 15.Bc3=; 12.Qc2 a5 13.Nf5 Rfe8 14.ba5 Ra5 15.d4=) 12...Rfe8 13.Nf5 ef4 14.Rf4 Ne5 15.Qe1+=; D) 11...Rfe8 12.Nf5 a5 13.f4 ef4 14.Rf4 ab4 15.ab4+=.

7.c4 Qb6 8.a3 =+.

7.c4 Nbd7 8.Qb3 (8.Nc3 e4 9.Nd4 Ne5=) 8...Qc7 (8...a5 9.a3+=) 9.Nc3= Re8 10.Rac1 (10.d4 a5 11.a3 h6+=) 10...Bf8 (10...a5 11.a3=) 11.e4 (11.d4 a5 12.b5 ed4 13.Nd4 g6+=) 11...g6 12.Ba1 (12.Ra1 Bg7=) 12...Bg7 13.a3 Nf8 14.Qc2 (14.Bb2 a5+=) 14...Ne6+= 15.Nd1 (15.h3!?+=) 15...Nf4–/+ 16.d3 N6h5 (better is 16...a5!?–/+) 17.Ne3+= a5 18.b5 Ne6 (18...cb5 19.cb5 Qc2 20.Rc2+=) 19.a4 (19.g3!?=) 19...Nhf4–/+ 20.Kh1 (20.bc6 bc6 21.g3 Ne2 22.Qe2 Rb8–/+) 20...Nc5 (20...Nd4!? 21.Bd4 ed4 22.Nd1-+) 21.Ng1 (21.Rfe1!?+=) 21...Bd7 22.Bb2 Qb6 23.Ba3 Rac8 (23...Bf6 24.g3 Ne2 25.Ne2+=) 24.Bc5 (24.g3!? Ne2 25.Ne2+=) 24...Qc5–/+ 25.Qb3 (25.bc6 bc6 (25...Rc6?! 26.g3 Ne6 27.Nf3=) 26.Bg4 Bg4 27.Ng4 Qa3–/+) 25...Ne6-+ 26.Nf3 Qb6 (better is 26...cb5!? 27.cb5 Qc1 28.Rc1 Rc1 29.Bf1 Bh6-+) 27.Rfe1–/+ h5 28.Kg1 Bh6 29.Bf1 Nd4 30.Qd1 Bg4 31.Be2 Bf3 32.Bf3 Be3 (32...Qa7!?+=) 33.fe3= Ne6 34.Qd2 (34.Rb1 Qa7=) 34...cb5+= 35.cb5 Kg7 36.Kf2 Nc5 37.Rc4 Ne6 38.Rec1 Rc4 39.Rc4 Re7 (39...Qd8 40.Kg1+=) 40.Qc3 Rc7 41.Rc7 Qc7 42.Qc7 Nc7 43.d4 (43.Bd1!?=) 43...Ne6+= 44.de5 de5 45.Bd1 Nc5 46.Bc2 Kf6 47.h4 Ke6 48.Ke2 Kd6 49.Kd2 f6 50.Kc3 Nd7 51.Bb3 Nc5 52.Bc2 g5 53.g3 Nd7 54.Bd1 g4 55.Bc2 Nc5 56.Kc4 Nd7 57.Kc3 Nc5 58.Kc4 ½–½. Leon Manas,JF (1710) – Gonzalez Intelangelo,Gerardo (2070), 2nd Open Internacional MC Claud, 2010.

7.c4 Nbd7 8.d4 Re8 9.Nc3 ed4 10.Nd4 Ne5 (10...Nb6 11.Qb3 a5 12.a3 c5 13.Ndb5 a4 14.Qc2+=; 10...Qb6 11.a3 (11.Qb3 Ne5 12.Rfd1 a5 13.b5 Qc7 14.b6+=) 11...Ne5 12.Qc2 Bg4 13.Nf5 a5 14.Bg4+=; 10...c5 11.bc5 Nc5 12.Nd5 Nd5 13.cd5 Bf6 14.Rc1=; 10...Qc7 11.Qd2 (11.a3 a5 12.b5 Nb6 13.Na4 c5 14.Nf3+=; 11.Qc2 Ne5 12.a3 b6 13.f4 Neg4 14.Qd3+=; 11.Rb1 Ne5 12.e4 d5 13.cd5 Bb4 14.dc6=; 11.Rc1 Ne5 12.f4 Neg4 13.Qd3 Qb6 14.b5+=) 11...Ne5 12.Rad1 a5 13.b5 a4 14.a3+=) 11.b5 (11.a3 a5 12.b5 c5 13.Nf3 Be6 14.Qa4+=; 11.Qb3 a5 12.b5 c5 13.Nf3 Qc7 14.Rfe1+=; 11.Qc2 Qb6 12.a3 Bg4 13.Nf5 a5 14.Bg4+=) 11...d5 (11...c5 12.Nf3= Be6 13.Qb3 Qb6 14.Rad1+=) 12.cd5+= cd5 13.Qb3 (13.Nf3 Nf3 14.Bf3+=) 13...Bg4 (13...Qd6 14.Rad1+=) 14.Rfd1 (14.Bg4+=) 14...Qd6 15.Bg4 Nfg4 (15...Neg4 16.Nf3+/-) 16.h3 (16.Nd5 Bh4 17.f4 Bf2 18.Kf1 Be3+–) 16...Bh4 17.hg4 Bf2 (17...Ng4 18.Nd5 Qh2 19.Kf1 Qh1 20.Ke2 Qg2 21.Nc2=) 18.Kf1 (better is 18.Kf2!? Ng4 19.Ke1 Ne3 20.Nde2+–) 18...Ng4+/- 19.Nf5 (19.Nd5 Be3 20.Nf5 Bb6+/-) 19...Ne3 (better is 19...Qf6!? 20.Rd5 Ne3 21.Kf2 Nd5 22.Nd5 Qf5 23.Kg1 Qg4+=) 20.Ne3+/- Be3 21.Nd5 Qg3 22.Rd2 (22.Ne3 Re3 23.Qd5+/-) 22...Rad8? (better is 22...Re4!? 23.Qc3 Qg5 24.Ne3 Re3+/-) 23.Re2 Bf4 (better is 23...Rd5 24.Qd5 Qh4 25.Re3 Re3+–) 24.Qg3 Bg3 25.Ne7 Kf8 26.Bg7! Kg7 27.Nf5 Kg6 28.Re8 Re8 29.Ng3 Re3 30.Kf2 Ra3 31.Ne2 Kf5 32.Rc1 Ra2 33.Rc7 b6 34.Rf7 Kg6 35.Rd7 h5 36.Ke3 Rb2 (36...h4 37.Nf4 Kg5 38.Rd5 Kg4 39.Ne6+–) 37.Rd6 (37.Nf4 Kh6 38.Rd5 Rb3 39.Ke4 Rb4 40.Kf5 h4+–) 37...Kf5 (37...Kf7 38.Rd5 h4 39.Rh5+–) 38.Rd5 Kg4 39.g3 h4? (39...Rb4+–) 40.Rd4 Kf5 41.Rh4 (41.gh4?! Rb5 42.Ng3 Ke5 43.Re4 Kf6+–) 41...Rb3 42.Kf2 Kg5 (42...Rb2 43.Ke1+–) 43.Nf4 Ra3 44.Rh7 Ra2 45.Kf3 Ra3 46.Kg2 Ra2 47.Kh3 Ra1 48.Rh5 Kf6 49.Kg4 a6 (49...Ke7 50.Rh6+–) 50.Rh6 Kg7 51.Rb6 ab5 52.Rb5 1–0. Roos,T – Osieka, Speyer, 1986.

7.c4 e4 8.Nd4 c5 9.Nc2 cb4 10.Nb4 Qa5 11.a3 Nc6 12.f3 =.

7.c4 Re8 8.d4 ed4 9.Nd4 d5 (9...c5 10.bc5 dc5 11.Nf3=) 10.Qb3+= Bd6 (10...a5 11.b5+=) 11.Nd2 Be6 12.Rfd1 (12.Ne6 Re6 13.Nf3 Nbd7+=) 12...Nbd7+= 13.h3 (13.Ne6 fe6 14.f4 Qe7+=) 13...Nf8 (13...a5 14.c5 Bc7 15.a3+=) 14.Rac1 Qd7 (14...Ng6!?+/-) 15.Ne6 fe6 16.cd5 (16.Bf6 gf6 17.Ne4 Qe7 18.cd5 ed5 19.Rd5 cd5 20.Qd5 Qe6+–) 16...cd5 (16...ed5!? 17.Bf6 gf6+/-) 17.e4+– e5 (17...Ng6!?+–) 18.ed5 Ng6 19.Nc4 Nf4 (19...Rad8 20.Bf1+–) 20.Bf1 Ne4 (20...Rad8 21.a3+– (21.Nd6?! Qd6 22.g3 Ng6+–)) 21.Qe3 Qf5? (21...Nf6 22.a3+–) 22.f3 (22.g3!? Rad8 23.Re1 Ng3 24.Qg3 a6+–) 22...Ng3 23.Nd6 Qg5 (23...Qg6 24.Ne8 Nf1 25.Kf1 Qg2 26.Ke1 Qb2+–) 24.Qd2 Nge2 (24...e4 25.fe4 Re4 26.Ne4 Ne4 27.Qe3+–) 25.Kh1 Red8 (25...Nc1 26.Rc1 Red8 27.Ne4+–) 26.Ne4 Qg6 27.Rc5 b6 (27...Rd7 28.d6 Rf8 29.Be5+–) 28.Rc6 Qh5 (28...Qc6 29.dc6 Rd2 30.Rd2+–) 29.Be2 Nh3 30.gh3 Qh3 1–0. Nadanian,Ashot (2325) – Karem,Basel, Yerevan ol (Men), 1996.

7.c4 Bg4 8.d4 (8.Nc3 e4 9.Nd4 Be2 10.Qe2 d5 11.cd5 cd5 12.a3=) 8...Nbd7 (8...e4 9.Nfd2 Be2 10.Qe2 d5 11.c5 Na6 12.a3=) 9.Nbd2 (9.de5 Bf3 10.Bf3 (10.ed6 Bd6 11.Bf3 Qc7= 12.h3=) 10...de5 11.a3 e4 12.Bg4=) 9...ed4 (9...e4 10.Ng5 Be2 11.Qe2= d5 12.a3=) 10.Bd4 (10.Nd4 Be2 11.Qe2 Re8 12.Nf5+=) 10...Qc7 (10...c5 11.Bc3 d5 12.bc5=) 11.Qb3 (11.a3 Rfe8 12.Qc2=) 11...d5 (11...c5 12.Bc3=) 12.Rac1 (12.Rfd1+=) 12...a5 13.Bf6 (13.cd5!? ab4 14.h3 Bf3 15.Bf3+=) 13...Nf6= 14.cd5 Nd5?? (better is 14...ab4 15.h3 Bd7+=) 15.Qd5!+– Bb4 (15...cd5 16.Rc7) 16.Rfd1 (16.Qc4 Qd7 17.Ne4 Rad8+–) 16...Rad8 (16...Be6 17.Qe4 Ba2 18.Ng5+–) 17.Qc4 c5?? (17...Qd7+–) 18.Qg4 1–0. Geyer – Ensel, Mainz, 1989.

7.d3 Nbd7 8.Nbd2 Re8 9.c4 Bf8 10.Qb3 h6 11.Rfd1 Re7 12.Rac1 g6 13.e4 Bg7 14.Nf1 Nf8 15.Ne3 Ne6 16.Bf1 Ng5 (16...a5!? 17.Qa3 Bd7=) 17.Ng5+= hg5 18.c5 dc5 19.Rc5 Be6 20.Qc2 Nd7 21.Ba3?? (better is 21.Ra5=) 21...b5?? (better is 21...Nc5 22.bc5 Qa5-+) 22.Be2?? (better is 22.Rc6 a6 23.Be2+/-) 22…Nf6 ½–½. Cabarkapa,Novak (1970) – Majstorac,Zoran, Senta op–B, 2008.

7.d4 e4 8.Nfd2 Re8 (8...d5 9.a3 b5 10.a4 Bb4 11.ab5 cb5+=) 9.c4 d5 10.c5 (10.a3 a5 11.ba5 Qa5=) 10...Nbd7 (10...b6 11.Nc3 a5=) 11.Nc3 Nf8 (11...b6=) 12.a4 Ng6 13.b5 Be6 14.a5 Qd7 15.a6 Bd8 16.Qc2 Bg4 (16...Ne7 17.ab7 Qb7 18.Rfb1+=) 17.ab7+/- Qb7 18.bc6 Qe7? (better is 18...Qb8 19.Ba6 Bc8+/-) 19.Bg4+– Ng4 20.Nd5 Qg5 21.c7 (better is 21.Nc3 Bc7 22.h3 (22.Nce4?! Bh2 23.Kh1 Qh5=; 22.Nde4 Bh2 23.Kh1 Qh4-+) 22...Ne3 23.fe3 Qe3 24.Rf2+–) 21...Nh4?? (better is 21...Qd5 22.cd8Q Qd8+–) 22.cd8Q (22.cd8N?! Qd5 23.Nf7 Qf7+–) 22...Rad8 (22...Red8 23.Nf4 Nf3 24.Nf3 ef3 25.Qe4+–) 23.Nf4 Ng2 (23...Nf3 24.Nf3 ef3 25.g3+–) 24.Ng2 Qh5 (24...Qh6 25.h4 Re7 26.Ne4+–) 25.h4 1–0. Lauermann – Zillich, Bad Salzuflen, 2000.

6.0-0 Nc6

7.a3 Re8 8.d4 ed4 9.ed4 d5 10.Nbd2 Bg4 11.Re1 Bd6 12.Ne5? (12.b5 Ne7=) 12...Be2 (better is 12...Ne5!? 13.de5 Be5 14.Be5 Re5 15.Bg4 Re1 16.Qe1 Ng4–/+) 13.Re2 Ne7 14.Qf1 Ng6 15.g3 c6 16.c4 Bf8 (16...a5!?=) 17.f4+= Nd7 18.Qh3 (18.cd5!? cd5 19.Nb3+=) 18...Nge5 19.de5 a5 20.c5 (20.cd5!? cd5 21.ba5=) 20...ab4+= 21.ab4 b6?? (21...Ra1 22.Ba1 b6 23.e6 fe6 24.Nf3–/+) 22.e6?? (better is 22.Ra8 Qa8 23.Qd7 bc5 24.bc5+–) 22...fe6 23.Re6 (better is 23.Ra8 Qa8 24.cb6 Bb4 25.Qg4+=) 23...Re6?? (better is 23...Ra1 24.Ba1 bc5 25.bc5 Nc5 26.Re8 Qe8–/+) 24.Qe6+– Kh8 25.Qf7 (better is 25.Ra8 Qa8 26.Qd7 bc5 27.f5+–) 25...Rc8?? (better is 25...Ra1 26.Ba1 bc5 27.bc5 Bc5 28.Kg2 Nf6=) 26.Ra7+– (26.Ra7 Nf6 27.Be5 bc5 28.Qb7+/-) 1–0. Macedo,Alexandre Soares De (1845) – De Morais,A Beserra (1800), Aberto do Brasil Xadrez Potiguar, 2013.

7.b5 Nb4 8.a3 Nbd5 9.c4 Nb6 10.Qc2 Be6 11.d3 c6 12.bc6 bc6 13.Nfd2 Qc7 14.Nc3 d5 15.cd5 cd5 16.Bf3 Rac8 17.Bd1?? d4-+ 18.ed4 ed4 19.Nb5 Qc2 20.Bc2 Rc2 21.Bc1 a6 22.Nd4 Rcc8 23.N2f3 Rfd8 24.Ne6 fe6 25.Rd1 Nfd5 26.Bg5 Bg5 27.Ng5 e5 28.d4?! ed4 29.Rd4 Nc3 30.Rb4 Nbd5 31.Rb2 Nb5 32.Re2 Na3 33.g3 Nb5 34.Ra6 Nb4 35.Ra5 Nd4 36.Re4 h6 37.Ne6 Ne6 38.Re6 Nd3 39.Ra4 Rc1 40.Kg2 Ne1 41.Kh3 Rd2 42.Rf4? Nd3 43.Kg2 Nf4 44.gf4 Rcc2 (45.h3 Rf2 46.Kg3 Rf1-+) 0–1. valpa – thedarkegg, playchess.de, 2003.

7.b5 Nb4 8.c4 Bf5 9.d3 e4? 10.de4+/- Be4 11.Nc3 Bg6 12.a3 Nc2 13.Rc1 (13.Rc1 a6 14.Nh4 Na3 15.Ng6 fg6 16.Ba3 ab5 17.Qb3+– (17.Nb5?! c6+/-)) 1–0. Trkn – guest4293, ICC, 2004.

7.b5 Nb4 8.d4 =+.

7.b5 Nb8 8.d3 b6 9.Nbd2 Bb7 10.e4 Nbd7 11.c4 Bc8 (11...a6 12.Qc2=) 12.h3 (12.d4 ed4 13.Nd4 Bb7+=) 12...Bb7 13.Nb3 Nc5 (13...a6 14.Qc2=) 14.Nh2 (14.Nc5 bc5 15.Nd2 a6+=) 14...Nb3 (14...Na4 15.Bc1=) 15.ab3+= a6 16.ba6 Ba6 17.f4 Bb7 (17...ef4!? 18.Rf4 b5+=) 18.fe5+/- de5 19.Be5 Ra1 20.Qa1 Bd6 (better is 20...Re8!?+/-) 21.Bf6+– gf6 22.Rf6?? (better is 22.Ng4 Bc5 23.Kh1+–) 22...Bc5+= 23.Kh1 (better is 23.Rf2!? f5 24.e5+=) 23...Bd4–/+ (23...Bd4 24.Qa7 Qf6 (24...Bf6?! 25.Qb7 c5 26.Qd5=) 25.Qb7 Qf2–/+) 0–1. Zaichenko,Andrey – Marcel,Alexis, FICGS, 2008.

6.0-0 Nbd7

7.a3 Nb6=.

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

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

7.d3 b6 8.Nbd2 Bb7 9.e4 c5 10.b5 Qc7 11.c4 a6 12.Qb3 ab5 13.cb5 (13.Qb5 Rfb8+=) 13...d5 14.ed5 Bd5 15.Nc4 e4 (15...Bd6!?+=) 16.de4= Ne4 17.Qd3 Bc4 18.Qc4 Bf6 19.Bf6 Ndf6 20.Bd3 Rfe8 21.Rfe1 Qf4 22.h3 Rad8 23.Re2 Rd3? (better is 23...Qf5=) 24.Qd3+– Nd6 25.Re8 Nfe8 26.Re1 Qf6 (26...h6 27.Ne5 Qa4 28.Nc6+–) 27.Qe2 (better is 27.Qd5!? h6 28.Qa8 Kh7+–) 27...h6 28.Ne5 Nc7 29.a4 Nd5 30.Nc6 Nc3 31.Qb2 (31.Qc2 Nd5+–) 31...Nf5 (31...Na4 32.Qa2 Nc3 33.Qa8 Kh7 34.Ne7+–) 32.Re8 Kh7 33.g4 (33.Ne5!? Nd5+–) 33...Qg5?? (better is 33...Nd4+/-) 34.Qc3+– 1–0. Miquel Badenes,Jose (1850) – Albuixech Sanz,Jorge, Alzira–ch Primera, 2004.

7.d3 Nb6 8.c4 Re8 9.Qc2 h6 (9...Qd7 10.a4 Qf5 11.a5+=) 10.a4 Be6 11.a5 Nbd7 12.Nbd2 g5 (12...c5 13.b5+=) 13.h3 g4 14.hg4 Ng4 (14...Bg4 15.a6 b6 16.Rfd1+/-) 15.d4 f5 (better is 15...c6!?+/-) 16.d5 Bf7 17.Qf5 Ndf6 (17...Ngf6 18.e4+–) 18.Nh4 h5 (18...Kh8+–) 19.f3 Nh6 (19...Ne3 20.Qg5 Kh8 21.Qe3 Ng8+–) 20.Qg5 Kh7 (20...Kh8 21.Qh6 Kg8 22.Ng6+–) 21.Bd3 (21.Bd3 Kh8 22.Qh6 Kg8 23.Ng6 Bd5 24.cd5+–) 1–0. marekt – Sgt._Pepper, ChessWorld.net, 2003.

7.d3 c6 8.Nbd2 (8.c4 Qc7=) 8...Re8 (8...a5 9.ba5 Qa5 10.c4=) 9.c4 Qc7 (9...Qb6 10.a3=) 10.a3 a6 11.Qc2 Bf8 (11...c5 12.Ne4=) 12.d4+= White prepares the advance c5 12...g6 (12...Be7 13.Rfd1+=) 13.de5 de5 (13...Ne5 14.Ne5 de5 15.f4+=) 14.c5+/- (14.c5 a5 15.Nc4+/-) 1–0. aschellen (1905) – Krasnopuzov, internet, 2006.

6.0-0 e4

7.Nd4 Nc6 8.Nc6 bc6 9.c4 d5 10.c5 Be6 11.Qa4 (11.d4 Qd7=) 11...Qd7 (11...a5 12.Bd4=) 12.Bd4 (12.Qa5 Bf5+=) 12...Rfb8 13.Qa5 Bg4 14.Ba6 Ne8 15.Nc3 Qe6 16.Ne2 Qh6 17.Be5 (better is 17.a3!?+=) 17...Qh5+= 18.Ng3?? (better is 18.Bc7 Nc7 19.Nf4=) 18...Qg6?? (better is 18...Qe5 19.a3 Qg5-+) 19.Bc7 (19.a3!?+=) 19...Nc7= 20.Qc7 Bf6 (better is 20...Bd8!? 21.Qf4 Rb4=) 21.Bb7 Ba1 22.Ba8 Rc8 (22...Ra8!? 23.Qb7 Re8 24.Ra1 h5+=) 23.Qa7+– Be5 24.Bb7 Re8 25.a4 h5 26.Qa6 h4 (26...Bd7 27.f4 ef3 28.Rf3+–) 27.Qc6 Re6 28.Qd5 hg3 29.hg3 (better is 29.fg3 Bf6 30.Rf4+–) 29...Be2?? (29...Bf6 30.Rc1 Re8 31.c6+–) 30.Re1 (better is 30.Qd8 Kh7 31.Qh4 Kg8 32.Be4 Qf6+–) 30...Bd3 31.Bc8 Re8 32.Qd7?? (better is 32.Bd7 Re7 33.Bf5 Qf5 34.Qd8 Kh7 35.Qe7+–) 32...Rf8 33.b5 Bc2 (33...Qg5!? 34.c6 Rd8 35.Qb7+–) 34.a5 Qf6 (better is 34...Bd3 35.Bb7 Qg5+–) 35.a6 Rd8 (35...Bb3 36.Bb7 Be6+–) 36.Qf5 (better is 36.a7 Rd7 37.Bd7+–) 36...Qe7+/- 37.c6 g6 38.Qg4 Qc5 39.Bb7 (39.Bf5+/-) 39...Qb6? (better is 39...Kg7!?+=) 40.Qg5 Bb8? (40...Re8+–) 41.Rc1 (better is 41.Qe7!? Rf8+–) 41...Rd2 42.Rc2?? (better is 42.Qe7 Bg3 43.a7 (43.fg3?! Qe3 44.Kh2 Rg2 45.Kg2 Qf3 46.Kh2 Qf2 47.Kh3 Qf5 48.g4 Qf3 49.Kh2 Qf4 50.Kg2 Qf3 51.Kg1 Qg3 52.Kh1 Qf3 53.Kg1 Qg3 54.Kh1 Qf3 55.Kg1=) 43...Qa7 44.c7 (44.fg3 Qe3 45.Kh2 Qe2+/-) 44...Bc7 45.Qc7+–) 42...Rc2-+ 43.Qe7? (43.c7 Qc7 44.Be4 Rc5-+) 43...Rc1 44.Kh2 Kg7 (44...Qb5 45.Qd8 Kg7 46.c7 Bc7 47.Qd4 Kg8 48.Bd5-+) 45.Qe4? (45.Qb4 Rc5 46.Kg1–/+) 45...Qb5-+ 46.Qd4 Be5 47.Qd2 Ra1 48.f4 Qf1 49.g4 Bb8 (49...Bf4 50.ef4 Qg1 51.Kg3 Ra3 52.Qc3 Rc3 53.Kh4 Qh2 54.Kg5 f6) 50.Qd4?? (better is 50.c7 Bc7 51.Qc3 Kg8 52.Qc7 Qh1 53.Kg3 Qe1 54.Kf3 Qd1 55.Ke4 Qb1 56.Ke5 Qb2 57.Kd5 Qb3 58.Ke4 Qb1 59.Kd4 Qb4 60.Kd3 Qb5 61.Ke4 Qb1=) 50...Kh7–/+ 51.Qd2 (51.c7 Bc7 52.Qf6 Kg8=) 51...Rd1 (better is 51...Re1 52.c7 Qg1 53.Kg3 Re3 54.Bf3 Bc7-+) 52.Qc3?? (better is 52.Qd1 Qd1 53.c7 Bc7 54.a7 Qg4 55.g3 Qe2 56.Kh3 Qe3 57.a8Q Bf4 58.Bf3–/+) 52...Qf2 53.Qf6 Qg1 (53...Bf4 54.ef4 Qg1 55.Kh3 Rd3 56.Kh4 Qh2 57.Kg5 Qh6) 54.Kg3 (54.Kh3 Qe3 55.Kh2 Qg1 56.Kh3 Rd3 57.Kh4 Qh2 58.Kg5 Qh6) 54...Qe3 55.Kh4 (55.Kh2 Qg1 56.Kg3 Rd3 57.Kh4 Qh2 58.Kg5 Qh6) 55...Rh1 (55...Bf4?! 56.Qf7 Kh6 57.Qf8 Kh7 58.Qf7 Kh8 59.Qf8 Kh7 60.Qf7=) 56.Kg5 Qc5 0–1. Cortes Lloveras,Enrique (1870) – Rodriguez Regull,German (2015), 7th Obert Internacional Jake Club – Mem, 2016.

7.Nd4 d5 8.a3 a5 9.b5 c6 10.c4 c5 11.Nc2 d4 12.d3 Bf5.

7.Ne1 d5 8.a3 Bf5 9.f4 ef3 (9...a5 10.b5+=) 10.Bf3 Be4 11.d3 Bg6 12.c4 c6 13.Nd2 Qc7 (13...a5 14.ba5 Re8 15.Bd4=) 14.Rc1 Qg3?? (better is 14...Qd7+=) 15.hg3+– 1–0. Urgelles Paumier,A – Naredo Brito,J, 3689 J.R. Capablanca IM /2000 G–2, 2001.

7.Ne1 Nd5 =.

7.Nd4 c5

8.bc5 dc5

9.Nb3 Be6 10.d4 ed3 11.cd3= Nbd7 12.d4 c4 13.N3d2 Rc8 14.e4 Nb6 15.a4 Bb4 16.a5 Na8 17.e5 c3 18.Nc3 Qd4 19.ef6 Bc3 20.Bc3 Qc3 21.Ne4 Qe5 22.fg7 Kg7 23.Bf3 Rcd8 24.Qc1 Bd5 25.Re1+/- Rfe8 26.Re3 Be4 27.Re4 Qf6 28.Rg4 Kh8 29.Rf4 Rd1 30.Qd1 Qf4 31.Bb7 Nc7 32.a6 Qe5 33.Qf1 Re6 34.Rc1 Nb5 35.Bc8 Rh6 36.h3 Rb6 37.Rb1 Qc5 38.Bg4 Kg8 39.Qd3 Nd4 40.Rb6 Qb6 41.Bh5 Kg7 42.Qg3 Kh6 43.Qh4+– Nf5 44.Qf4 Kh5 45.Qf5 Kh6+/- 46.Qf7 Qa6 47.h4 Qa1+/- 48.Kh2 Qe5 49.Kh3 Qa1+/- 50.Qf4 Kg7 51.Qg5 Kf7 52.Qd5 Kf6 53.Qd8 Kf7 54.Qc7 Kg8 55.Qc8 Kf7 56.Qd7 Kg8 57.Qe8 Kg7 58.Qe7 Kg8 59.Qe6 Kg7 60.Qe3 a6 61.Qe7 Kg8 62.f3 a5 63.Qe6 Kf8 64.Qc8 Kf7 65.Qf5 Kg7 66.Qd7 Kg8 67.Qd5 Kf8 68.Qd8 Kg7 69.Qc7 Kg8 70.Qb8 Kf7 71.Qb7 Kg8 72.Qe7 Qh1 73.Kg3 Qa1 74.Qd8 Kf7 75.Qd7 Kg8 76.Qe6 Kf8 77.Qf5 Kg7 78.Qg4 Kf7 79.Qf4 Kg7 80.Kg4 Qa2 81.Qd4 Kg8 82.Kg3 a4+= 83.Qd8 Kf7 84.Qd7 Kf6 85.Qd4 Kf7 86.Qf4 Kg7 87.Qe5 Kf8 88.Qb8 Kf7 89.Qa7 Kf8 90.Qc5 Kf7 91.Qf5 Kg7 92.Qg5 Kf7 93.Qc1 a3= 94.Qf4 Kg8 95.Qg5 Kf8 96.Qd8 Kf7 97.Qd7 Kf6 98.Qd4 Kf7 99.Qa7 Kf6 100.Qb8 Qb2 101.Qd6 Kg7 102.Qe7 Kg8 103.Qe6 Kg7 104.Qg4 Kf6 105.Qf4 Ke6 106.Qh6 Kf7 107.Kh3 a2 108.Qh7 Qg7 109.Qf5 Qf6 110.Qd7 Kf8 111.Qc8 Kg7 112.Qd7 Kf8 113.Qc8 Kg7 114.Qd7 Kf8 ½–½. Crafty – Little Goliath, Kleinschmidt, CT, 1999.

9.Nb3 Be6 10.f3 Nc6 11.fe4 c4=.

9.Nb3 Nc6

10.d3 ed3 11.cd3 Be6=.

10.d3 Bf5 11.Nc3 (11.de4 Be4=) 11...ed3 12.Bd3 Bd3 13.cd3 b6 14.f3 Nd5 15.Nd5 Qd5 16.d4 cd4 17.Nd4 Bc5 18.Qb3 Qb3 19.ab3 Nb4 20.Rfd1 Rfe8 21.Kf2 a5 22.Rd2 Nd5 23.e4 Nf4 24.Kf1 Red8 25.Rad1 Bb4 26.Rc2 Rd7 27.Rdc1 (better is 27.g3 Ne6 28.Ke2=) 27...Nd3–/+ 28.Rc8 Rd8 29.Ra8 (better is 29.Rd8!? Rd8 30.Nc6 Nc1 31.Nd8 Nb3 32.Ke2-+) 29...Ra8 30.Rc2 Nb2 31.Ke2 a4 (31...Nd1! 32.Nc6 Nc3 33.Kd3-+) 32.Nc6?? (better is 32.Rb2 Bc3 33.Ra2 Bd4 34.Ra4-+) 32...ab3 (32...ab3 33.Rc1 Na4 34.Nb4 b2-+) 0–1. Bedbur,Heinz – Pagni,Carlo Alberto, corr th, 1990.

10.d4 cd4+= 11.Nd4 Qb6 12.Bc3 (12.Ba3 Ba3 13.Na3 Rd8+=) 12...Rd8–/+ 13.Nd2 Nd5 14.Ne4 Nc3 15.Nc3 Nd4 16.ed4 Rd4 (16...Bf6 17.Bf3 Bd4 18.Nd5+=) 17.Bd3+= Bf5 (17...Bf6 18.Ne4=) 18.Ne2 (18.Qe2 Be6+=) 18...Rd7 19.Rb1 (19.Nf4 Qf6–/+) 19...Qc7–/+ 20.Ng3 Be6 21.Qh5 (21.a4 Rad8+=) 21...g6 22.Qb5 Ba2 23.Rb2 (23.Rbd1 Bd6–/+) 23...Bd5-+ 24.Ne4 (24.c4 a6 25.Qb3 Be6-+) 24...Bc6 (24...Rad8 25.Qa4 Qe5 26.Rbb1-+) 25.Qb3 a5 26.Ra1 (26.Re1 a4 27.Qa2 Ra5-+) 26...Qe5 27.f3? (27.Ng3 a4 28.Qa2 Bc5-+) 27...Rd4 Black prepares the advance a4 (better is 27...Be4 28.fe4 Bc5 29.Kh1-+) 28.c4?? (better is 28.Rab1-+) 28...a4 (28...Be4?! 29.Be4 Qc5 30.Kf1-+) 29.Qc2 (29.f4 A) 29...ab3?! 30.Ra8 (30.fe5?? Ra1 31.Rb1 Rb1 32.Bb1 Be4-+) 30...Kg7 31.fe5 Rd3 32.Nd6+=; B) 29...Qh8 30.Qc2 Rd3 31.Qd3 Qb2-+) 29...Rd3! 30.Re1 (30.Qd3 Qb2 Discovered attack (30...Qb2 Deflection; 30...Qb2 Overloading)) 30...Be4 (better is 30...Qd4 31.Kh1-+) 31.Re4 (31.fe4 Rc3 32.Qb1 a3-+) 31...Bc5 32.Kf1 Qh2 33.Qd3 a3 (33...a3 34.Rd2 a2 35.Qd8 Rd8 36.Rd8 Kg7-+) 0–1. Hilbert,Stephan J – Hamby,Stephen (2010), FICGS, 2014.

10.f3 Be6 11.fe4 Ne4 12.d3 Nd6 13.N1d2 (13.Bf3 c4 14.Nd4 Nd4 15.Bd4 cd3–/+) 13...Nf5 14.Rf3 Bg5 15.Nf1 Qe7 16.Nbd2 Nd6 17.c4 Rad8 18.Qe1 Rfe8 19.Nb3 b6 20.Qc3 f6 21.Rf2 Bf7 22.Bc1 a5 23.a4 Nb4 24.e4 (24.Bd2 Bc4 25.dc4 Ne4–/+) 24...Bc1 25.Qc1 f5 26.Nbd2 (26.ef5 Nf5 27.Qc3 Bg6–/+) 26...fe4 27.de4 Ne4 28.Ne4 Qe4 29.Ng3 Qe5 30.Ra3 Bg6 31.Raf3 Nd3 32.Bd3 Rd3 33.Qf1 Rf3 34.Rf3 Qd4 35.Kh1 Qd7 36.h4 h5 37.Rf4 Qa4 38.Kh2 Qd7 39.Qf3 a4 40.Nh5 Qd6 41.Ng7 (41.Ng3 a3! 42.Qd5 Qd5 43.cd5 b5-+) 41...Kg7 42.Qg3 Qe5 43.Rg4 (43.Qf2 a3 44.g3 Qe2 45.Qe2 Re2 46.Kh3 a2-+) 43...Qg3 44.Rg3 (44.Kg3?? a3 45.h5 a2 46.Rg6 Kh7-+) 44...Ra8 (better is 44...Re4!? 45.h5 Rh4 46.Kg1 Rh5 47.Ra3-+) 45.h5 a3 46.Rg6 Kh7 (46...Kh7 47.Rd6 a2-+) 0–1. Frenzel,Lothar (2075) – Guenther,Michael (2300), BdF remoteschach.de, 2008.

10.f3 Be6 11.fe4 Ne4 12.Bf3 f5 13.d3 Ng5 14.Bc6 bc6 15.N1d2 Qc7 16.Kh1 (16.Rb1 Rab8+=) 16...Rab8= 17.Qe1 Bd6 18.Qh4 h6 19.Ba3 Exerts pressure on the isolated pawn (19.Nc4 Bc4 20.Qc4 Kh7+=) 19...Rb5 (19...Qe7 20.Rab1+=) 20.Nc4 Be7 21.Qf4 Rc8 22.Bb2 Nf7 23.Qf2 (23.Rae1 Rbb8+=) 23...Rf8 24.Bc3 Kh7 25.a3 g6 (25...Kg8 26.a4 Rbb8 27.Nba5+=) 26.Nbd2 Rb7 27.a4 Nd6 28.Na5 Rb6 29.Qg3 Qd7 30.e4 Rbb8 (30...fe4 31.Qe5 Rg8 32.Rae1+/-) 31.Rae1 (31.Qe5 Bh4+/-) 31...Rbe8 (31...fe4 32.de4 (32.Ne4?! Ne4 33.de4 c4=) 32...Rf1 33.Rf1+=) 32.Nf3 Nf7 33.ef5 Bf5 34.Nc4 Bd6 35.Nd6 Qd6 36.Re8 Re8 37.Qf2 Ng5 (37...Re7 38.Nh4 Bd7 39.Qf7 Rf7 40.Rf7 Kg8 41.Rg7 Kf8 42.Ng6 Ke8 43.Ne5+–) 38.Nd2 (38.Ng5 hg5 39.Kg1 Kh6+–) 38...Re7 (38...Qe7!?+/-) 39.h4 Ne6 (39...Nf7 40.Nc4 Qd7 41.h5+– (41.Qc5?! Be6+–)) 40.g4! Bd3 (40...Bg4 41.Ne4 Combination) 41.Qf6 Rg7 42.cd3 Qd3 43.Rf3 (43.Qe6?! Qh3 44.Kg1 Qg3 45.Kh1 Qh3 46.Kg1 Qg3 47.Kh1 Qh3=) 43...Qd5 44.Be5 1–0. Morley,Paul (2240) – Shabaev,Vladimir Nikolaevic, WS/M/139 ICCF, 2008.

10.f3 ef3 11.Bf3 Qc7 12.Nc3 c4 13.Bc6 Qc6 14.Nd4 Qc7 15.Ncb5 Qd8 16.Nf5 Bf5 17.Rf5 a6 18.Nd4 Re8 19.Qf3 Bb4 20.Rd1 (worse is 20.Qb7 Bd2 21.Nf3 Rb8 22.Bf6 Rb7 23.Bd8 Be3 24.Kf1 Rd8–/+) 20...c3 21.dc3 (21.Qb7? cb2 22.Qb4 Rb8-+) 21...Bf8 22.Nb3 (22.Qb7? Rb8 23.Qa6 Rb2-+) 22...Qb6 Attacking the isolated pawn on e3 23.Rf1? (better is 23.Rd3!?=) 23...Re3–/+ 24.Qf4 Re2 25.Qd4 Qc6 26.R5f2 Rae8 27.Qd1 Rf2 28.Rf2 Qb6 29.Qd4 Qc7 30.g3 Ne4 31.Qe3 b5 32.Rf4 Nd6 33.Qd3 Nc4 34.Bc1 Re1 35.Kf2 Qe5 36.a4 Rh1 (36...Qe8 37.ab5 ab5 38.Rh4-+) 37.Kg2–/+ Qe1 38.Qd4 g5 39.Rf5 Rg1! 40.Qg1 Qe4 41.Rf3 g4 42.Qd1 ba4 43.Nd4 a3 44.Kf2 gf3 45.Qf3? (better is 45.Qd3 Qd3 46.cd3-+) 45...Qf3-+ 46.Kf3 a5 0–1. Skerlik,Stanislav (2300) – Latronico,Nicola (2350), ICCF EM/MN/064 ICCF Email, 2003.

10.f3 ef3 11.Bf3 Qd6=.

6.0-0 Be6

7.b5 Nbd7 8.c4 c6 9.a4 Qc7 10.Qc2 a6 11.Ng5 cb5 12.ab5 ab5 13.Ne6 fe6 14.Ra8 Ra8 15.Rc1 bc4 16.Qc4 (better is 16.Bc4!? Kf8 17.Be6 Qc2 18.Rc2+=) 16...Qc4–/+ 17.Rc4 Nc5 18.Nc3 d5 19.Rb4 Ra7 20.Rb5 d4 21.ed4 (21.Nd1!? d3 22.Bf1–/+) 21...ed4-+ 22.Nb1 Nd5?? (better is 22...d3 23.Bf3 Nfd7-+) 23.Bd4= b6 24.Nc3 Nc3 25.Bc3 Bf6 26.Bf6 gf6 27.f3 Nd7 28.d4 Kf7 29.g4 Ra5 30.Rb4 Ke7 31.h4 h6 (31...f5 32.Kf2=) 32.Bb5 Nb8 33.Kf2 Kd6 34.Bc4 Nd7 35.Kg3 (35.f4 Ra1+=) 35...e5= 36.Bb5 Nb8 37.de5 fe5 38.Be8 (38.Be8 Kc5 39.Rb3+=). Woelfelschneider,Peter – Chaneira, 2008.

7.Nc3 Nc6 8.a3 h6 9.d3 Bg4 10.Ne4 Ne4 11.de4 Bf3 12.Bf3+= a5 13.b5 Na7 14.a4 Re8 15.c4 Bf8 16.Qc2 c6 17.Rfd1 Nc8 18.c5 cb5 19.ab5 b6? 20.c6+– Ne7 21.Bg4 Qc7 22.Bd7 Red8 23.Ba3?? Nc8?? 24.Qe2 g6 25.Qg4 h5 26.Qg5 Na7 27.Rab1 Kg7 28.f4+– Nc8 29.f5 Na7 30.Rf1 Qb8?? 31.Rf3 Qc7 32.fg6 fg6 33.Rg3 (33.Rg3 Kf7 34.Qg6 Ke7 35.Qe6#) 1–0. C_D_B7 (1645) – C_Artist_Think, chessHere.com, 2006.

7.c4 c6 8.b5 (8.d4 e4 9.Ng5 Bf5=) 8...c5 (8...cb5 9.cb5 Nbd7 10.Nc3=) 9.d4 ed4 (9...cd4 10.ed4 e4 11.Ng5=) 10.ed4 Nbd7 (10...d5 11.Nbd2=) 11.d5+= Bf5 (11...Bg4 12.Nh4 Be2 13.Qe2+=) 12.Nbd2 (12.Nh4 Be4+=) 12...h6 (12...Ne4 13.Ne4 Be4 14.Bd3 Bd3 15.Qd3+=) 13.Re1 Ne8 (13...Re8 14.Qb3+=) 14.a4 (14.Qb3 Bf6+=) 14...b6 (14...Bf6 15.Qb3+=) 15.Qb3 Bf6 16.Ra2 (16.Bf6 Nef6 17.Qe3 Qc7+=) 16...Bb2 17.Rb2 Nef6 (17...Qf6 18.Ra2+=) 18.Nh4 (18.Bd3 Bd3 19.Qd3 Re8+=) 18...Bh7= 19.Bd3 (19.Qh3 Re8=) 19...Bd3 20.Qd3 g6? (20...Ne5 21.Qh3+=) 21.g3 (better is 21.Ng6 Re8 22.Re8 Qe8 23.Nh4 Qe1 24.Nf1+–) 21...Re8+= 22.Ne4 (22.Re8 Qe8 23.Nhf3 a6+=) 22...Ne4 (22...Ne5 23.Qc3=) 23.Re4 Ne5 (23...Qf6 24.Rbe2 Re4 25.Qe4 Kg7+=) 24.Qb1 (24.Qc3 f5 25.Re3 f4+=) 24...Kg7 (better is 24...f5!? 25.Re5 de5 26.Ng6 Qf6+=) 25.Rbe2+= Qd7 26.Kg2 (26.Qf1!?+=) 26...Nc4 27.Qa1 (27.Rc4 Re2 Discovered attack (27...Re2 Pinning; 27...Re2 Deflection; 27...Re2 Clearance; 27...Re2 Overloading)) 27...Kg8 (27...Kh7 28.Qf6 Ne5 29.Nf3=) 28.Qe1 (28.Qc1 Re4 29.Re4 Ne5 30.Qh6 Qb7=) 28...Re4+= 29.Re4 Na5 (29...Ne5 30.f4 Nd3 31.Qe2+=) 30.Re7 Qd8?? (30...Qg4!?+=) 31.Qe4 (31.Ng6!? Nc4 32.Qb1+–) 31...Kf8+= 32.Rf7 (32.Ng6 fg6 33.Re6+–) 32...Kf7+= 33.Qg6 Ke7 34.Qe6 Kf8 35.Qh6 (35.Ng6 Kg7 36.Ne7 Qc7=) 35...Ke7 (better is 35...Ke8 36.Nf5 Kd7 37.Qd6 Kc8 38.Qe6 Qd7+=) 36.Qg7?? (36.Qe6 Kf8=) 36...Ke8+= 37.Qg8? (better is 37.Nf5+=) 37...Kd7-+ 38.Qe6 (38.Qg7 Qe7 39.Qe7 Ke7 40.Nf5 Kf6-+) 38...Kc7 39.Nf5 Qd7 (39...Nc4 40.h4-+) 40.h4 (40.g4 Nc4-+) 40...Re8 41.Qd7 Kd7 42.h5 (42.Ne3 c4 43.Kf3 c3-+) 42...c4 43.g4 (43.Ne3-+) 43...c3 44.Nd4 Re4 45.Nc2 Rg4 46.Kh3 (46.Kf3 Rh4 47.Ke3 Rh3 48.f3 Nb3-+) 46...Rg8 (46...Rg5 47.h6-+) 47.Kh4 (47.f4 Rg1-+) 47...Ke7 (47...Rg2 48.Nb4-+) 48.h6 (48.Nb4 Rg2 49.f4 c2 50.Nc2 Rc2-+) 48...Rh8 (better is 48...Kf6 49.f4-+) 49.Kh5 Kf7 50.f4 (50.Kg5 Re8 51.f4 Re2-+) 50...Nb7 (50...Rg8 51.Nb4-+) 51.Nd4 Nd8 (51...Kf6 52.Nc2-+) 52.Kg5 Rg8 53.Kh5 (53.Kf5 Nb7-+) 53...Kf6 54.h7 (54.Nc2 Rg2 55.h7 Kg7-+) 54...Rh8 55.Kh6 (55.Kg4 Rh7 56.Kf3 Rh2-+) 55...Nf7 56.Kh5 Rh7 57.Kg4 0–1. Spiegel,Matthias – Korthase,Erwin, Ueckermuende op 6th, 2007.

7.c4 Nfd7 8.Qc2 f5 9.Bc3 Nc6 10.d3 Qe8 11.e4 f4 12.d4 g5?? (better is 12...Qg6 13.Kh1 ed4 14.Nd4 Nd4 15.Bd4 c5 16.bc5 dc5+=) 13.d5+– Bf7 14.Ne1?? (better is 14.dc6 bc6 15.Nfd2+–). Castellanos Palop,David – Codina Tormo,Julia, It (open) Silla (Spain), 2003.

7.c4 e4 8.Nd4 Nbd7 9.Ne6 fe6 10.Bg4 e5 11.Be6 Kh8 12.Nc3 a5 13.a3 Qe8 14.Qc2 Qg6 (14...Nb6 15.f4+=) 15.Bd7 Nd7 16.Qe4 Qe6 17.Rfc1 (17.Nb5!? Rac8 18.Qb7+– (18.ba5?! Nc5 19.Qc2 c6=)) 17...c6+= 18.Ne2 (18.f3 Nf6 19.Qd3 Rf7+=) 18...Nf6 (18...d5!? 19.cd5 cd5=) 19.Qc2+= Qg4 20.f3 Qh4 21.Ng3 Qg5 22.Ne4 (22.Qf5 Qh6+/-) 22...Qh4 23.Nf6 Rf6 24.g3 Qh5 25.f4 Raf8 26.Qe4 Rh6 27.Qg2 ef4 28.ef4 (28.gf4?? Rg6-+) 28...Rf4 29.Re1 Rf7 30.Re3 Kg8 31.Rae1 Kf8 32.Rf1 (32.Bd4 ab4 33.ab4 Qg4+=) 32...Rf1 33.Qf1 Bf6 34.Re2 Qf7 35.Rf2 Ke7 (35...ab4 36.ab4 Kg8 37.Qe2+=) 36.Qe1 (36.ba5 Kd8+/-) 36...Kd7 37.Rf4 (better is 37.d3+=) 37...ab4 38.ab4 Qe6 (better is 38...Qh5 39.Bf6 Qh2 (39...Rf6?! 40.Re4=) 40.Kf1 Rf6–/+) 39.Re4= Qh3 40.Qf2 Kc7 (40...Qh5!? 41.d3 Bb2=) 41.Bf6+= Rf6 42.Qe2 Rf7 ½–½. Strohmann,Marcel – Henkemeier,M (1915), Sparkassen Open A, 2011.

7.d3 Nbd7 8.Nbd2 Re8 (8...a5 9.ba5 Ra5 10.Ng5=) 9.c4= h6 10.Re1 Nb6 (10...a5 11.a3=) 11.a4 a5 12.Bc3 (12.b5 c6=) 12...ab4 13.Bb4 Bd7 (13...Nbd7!?+=) 14.a5+= Nc8 15.Qc2 White prepares the advance c5 15...Na7 16.c5 (16.Bc3!?+=) 16...Nc6+= 17.Reb1 Nb4 18.Rb4 dc5 (better is 18...Bc6!? 19.cd6 Bd6+=) 19.Rb7+= Bc6 (19...Nd5 20.Ne5 Bf6 21.Nd7 Ba1 22.Nc5=) 20.Rbb1+/- Bd6 21.Nc4 (21.a6 Ra7+/-) 21...Nd5 (21...e4 A) worse is 22.Nd6 cd6 (worse is 22...Qd6 23.Ne1+=) 23.Nd2 Ra5+=; B) 22.Nfd2=) 22.Nfd2 Nb4 23.Qd1 Re6 (23...Qd7 24.h3=) 24.Bf3+= Rg6 (24...Bf3 25.Qf3 Nd3 26.a6+=) 25.Ne4 (25.Bc6 Nc6 26.Ne4 Nb4+/-) 25...Ra6 26.Ncd6 (better is 26.g3!?+=) 26...cd6+= 27.d4 f5 (better is 27...Qa8!? 28.Nd2 ed4