3.a3 Qa6 4.e3 Qb6 5.c5 Qc7 6.Bb2 a5 7.Nf3 ab4 8.ab4 Ra1 9.Ba1 b6 10.d4 Qa7 11.Bc3 Ba6 12.Ba6 Na6 13.0-0 bc5 14.bc5 Nf6 15.Nbd2 e6 16.Qa4 Be7 (16...Nd5!? 17.Ba5 Nb8+/–) 17.Ra1+– 0-0?? (better is 17...Nd5+–) 18.Qa6 Qc7 19.Ba5 Qb8 20.Bb6 Qe8 21.Ne5 Nd5 22.Nec4 (22.Qb7!? Nf6+–) 22...Nb6 23.Nb6 Bd8 (23...d6 24.Qb7 dc5 25.Ra8+–) 24.Ndc4 Bb6 25.Nb6 Qe7 (25...f6 26.Qb7+–) 26.Qb7 h5 27.h3 (27.Nd7 Rd8 28.Ra8 Kh7 29.Rd8 Qd8 30.Qc6 h4+–) 27...Kh7 (27...Rd8 28.Qc7+–) 28.Ra7 Rd8 29.Nd7 Qg5 (29...h4 30.Qc6 Kg8 31.Qb7+–) 30.Ne5 Rf8 31.Nf7 Rf7 (31...Qg6 32.f4 h4 33.Ng5 Kh6 34.Qc6+–) 32.Qf7 Kh6 (32...Qg6+–) 33.Qe6 Kh7 34.Qc6 Qf5 35.e4 (35.Qb7 Qg6 36.c6 Kh6 37.c7 Qd3 38.c8Q Qd1 39.Kh2 Qh1 40.Kh1 g6 41.Qf8 Kg5 42.Qbe7) 35...Qf4 36.g3 Qc1 37.Kg2 Qg5 38.Qd7 h4 39.Qg7! Qg7 40.Rg7 Kg7 41.c6 hg3 42.fg3 Kf7 43.c7 Ke8 If Black now would get c8Q+ in, he might survive 44.c8Q Ke7 45.Qc6 Kf7 46.d5 (46.Qd7 Kf6 47.e5 Kg6 48.g4 Kg5 49.Qc6 Kf4 50.Qf3 Kg5 51.Qf6) 46...Ke7 47.Qe6 Kd8 48.Qf7 Kc8 49.e5 (49.Qa7 Kd8 50.d6 Ke8 51.Qe7) 49...Kd8 (49...Kb8 50.d6 Ka8 51.d7 Ka7 52.d8Q Ka6 53.Qfd5 Ka7 54.Q5a8) 50.d6 Kc8 51.Qc7 1–0. Fournier,Frederic (1825) – pepetomas, Active, 2011.

3.a3 Na6 4.c5+= Qc7 (4...Qd8 5.d4+=) 5.Bb2 (5.d4 Nf6+=) 5...b5 6.e3 (6.Nf3 d6+=) 6...Qd8 (6...d6 7.cd6 ed6 8.Nf3+=) 7.Nf3 (7.Qf3 Nc7+=) 7...Nc7 (7...Nf6 8.Bf6 gf6 9.d4+–) 8.Be2 (8.a4 Nf6+–) 8...Nf6 (8...a5 9.0-0+=) 9.a4+– ba4 (9...Nfd5 10.ab5 Nb5 11.Qa4+–) 10.Nc3 (10.0-0 a5+=) 10...a3 (10...a5 11.ba5 Ra5 12.Na4+=) 11.Ra3+– Nb5? (better 11...Rb8!?+–) 12.Nb5+– cb5 13.Bb5 a6 (13...Rb8 14.Qa4 a6 15.Bc4+–) 14.Qa1 (14.Bf6 gf6 15.d4 Bb7+–) 14...Nd5 (14...Rb8 15.Bc4+–) 15.Rb3 (15.Bg7 Nb4 16.Ba4 Rg8 17.Bf8 Rf8+–) 15...e6 (15...Rb8!? 16.Ba6 Ba6 17.Qa6 Nb4 18.Qa4+–) 16.Bc4 Nc7 (16...Nf6 17.Bf6 gf6 18.d4+–) 17.0-0 (17.Bg7 Rg8 18.Bf8 Kf8+–) 17...d5 (17...Bb7 18.Be2 (worse 18.Bg7 Rg8 19.Bf6 Bf3+–) 18...f6 19.Ng5+–) 18.cd6 Bd6 19.Bg7 Rg8 20.Be5 (20.Bf6 Qd7 21.e4 Bb7+–) 20...Rg4 (20...Bb7 21.Be2 Bd5+–) 21.Bf6 (21.Bd6 Qd6 22.Ne5 Rg5+–) 21...Qd7 22.d4 (22.d3 Rg8+–) 22...Rg6 (22...Bb7 23.Be2+–) 23.Be5 Be5? (23...Bb7 24.Be2 Bd5+–) 24.Ne5 (24.de5?! Bb7 25.Be2 Bd5+–) 24...Qe7 (24...Qd6 25.Ng6 hg6 26.Rc1+–) 25.Ng6 fg6 (25...hg6 26.Rc1+–) 26.e4 (26.Qa5 Bb7+–) 26...Rb8 27.d5 Qg5 (27...e5+–) 28.Qh8 Kd7 29.de6 Kd6 (29...Kc6 30.Ba6! Na6 31.b5 Rb5 32.Qc8 Nc7 33.Rc3 Qc5 34.Rfc1+–) 30.Rd1 Kc6 31.Bd5 Kb5 (31...Nd5 32.b5! Kb7 33.ba6 Ka7 34.Rb8 Kb8 35.Rb1 Kc7+–) 32.Qd4 Nd5 33.Qc5 Ka4 34.Rdb1 (34.Ra1 Kb3 35.Rb1 Ka2 36.Qc2 Ka3 37.Qb3) 34...Be6 (34...Rb5 35.Qc4 Qg2 36.Kg2 Nf4 37.Kf3 Be6 38.Ra1) 35.Qa5 1–0. GuestTBNC – GuestMJPL, freechess.org, 2016.

3.a3 Qc7 4.Bb2 e6 (4...Nf6 5.Nf3=) 5.Nf3 Nh6 (5...Nf6 6.Nc3+=) 6.e3 d6 7.Bd3 Be7?? (better 7...Nd7+–) 8.Bg7+– Rg8 9.Bh6 Rg2 10.Kf1 Rg8 11.Bh7 Rg4 (11...Rh8 12.Qc2 Bf6 13.Nc3+–) 12.d4 e5 (12...Bf8 13.h3 Rd4 14.Qd4 Bh6 15.Nc3+–) 13.h3 Rg6 14.Bg6 fg6 15.Nbd2 Bf5 16.e4 Be6 17.d5 cd5 (17...Bf7 18.Kg2+–) 18.cd5 Bf7 (18...Bg8 19.Rc1 Qd8 20.Qa4 Nd7 21.Rg1+–) 19.Rc1 Qd7 (19...Qd8 20.Nc4+–) 20.Ng5 Bg5 (20...Na6 21.Kg2+–) 21.Bg5 Qb5 (21...Na6 22.Qf3 Bg8+–) 22.Kg2 Qd3 23.Rc8 Kd7 24.Qg4 Be6 25.Qe6 1–0. DEFFM – GuestPVKF, freechess.org, 2019.

3.Bb2 Qb4!? 4.Qc2 d6–/+.

3.Bb2 Nf6 4.a3= d5 (4...d6 5.e3=) 5.e3 dc4 (5...a5 6.c5 Qc7 7.Nf3=) 6.Bc4 g6? (better 6...a5!?=) 7.Qb3+– a5 (7...Be6!? 8.Be6 fe6 9.Qe6 Nbd7+–) 8.Bf7+– Kd8 9.Nf3 Bh6 (9...ab4 10.Qd3 Bd7 11.Ng5+–) 10.Nc3 (10.Bd4 Qc7+–) 10...Bg4 (10...ab4 11.Ne4! Nbd7 12.ab4 Ra1 13.Ba1 Qa6+–) 11.Na4 (11.Ne5 Bf5 12.Na4 Qa6+–) 11...Qb5 (11...Qa6 12.Nc5 a4 13.Qc2+– (13.Na6?! ab3 14.Ne5 Na6 15.Ng4 Bg7+–)) 12.Nd4 (12.Bc4 Qh5 13.Ne5 Rf8 14.ba5 Bc8+–) 12...Qh5 13.b5 (better 13.Be6 Ke8 14.Nc5+–) 13...Rf8? (13...cb5 14.Qd3 Nbd7 15.Ne6 Be6 16.Be6 Ra6+–) 14.bc6 Nc6 (14...b5 15.c7! Kc7 16.Rc1 Kd8 17.Nb6+–) 15.Qb7 Nd4 (15...Rc8 16.Be6 Na7 17.Nb6+–) 16.Bd4 (16.Bd4 Rf7 17.Qa8 Kd7 18.Nc5 Qc5 19.Bc5 Rg7 20.Rb1 Be3 21.de3 Ke6 22.Rb6 Kf7 23.Qd8 h5 24.Qe7 Kg8 25.Qf6 Bd7 26.Bd4 Re7 27.Qh8 Kf7 28.Rf6; 16.ed4?! Rc8 17.Qb6 Rc7+–) 1–0. zozo – alexp, net–chess.com, 2017.

3.Qb3 d5 4.c5 Qc7 5.Bb2 e5 6.Qg3 Nd7 (6...f6 7.Nf3 Ne7 8.Qh4=+) 7.d4 f6 8.Nf3 Qd8 (8...a5 9.ba5 Ne7 10.e3=) 9.de5+= b6 10.ef6 Ngf6 11.Nd4 Ne4 12.Qe3 (12.Qf3 bc5 13.Nc6 Qg5+=) 12...bc5= 13.bc5 (13.Ne6 Qb6 14.Ng7 Kf7 15.Qf3 Ndf6 16.Bf6 Nf6=+) 13...Ne5 (13...Bc5 14.Nc3 Qa5 15.Kd1–/+) 14.Qf4 (better is 14.Nd2!? Ng4 15.Qf4 Ngf2 16.Nc6=) 14...Ng6 (14...Qc7 15.e3 g5 16.Nb5 Qa5 17.Bc3 gf4 18.Ba5 cb5 19.Bc3–+) 15.Qe3 ½–½. Valenta,Vit – Jordan,J (2000), Morava–ch U20, 1992.

3.b5 e6 4.e3 Nf6 5.Nc3 a6 6.a4 Bb4 7.Bb2 0-0 8.Nf3 ab5 9.cb5 (9.ab5 Ra1 10.Qa1 d5=) 9...d5+= 10.Qb3 c5 11.Ba3 Ba3 12.Ra3 Nbd7 13.Be2 c4 14.Qb2 Nc5 15.0-0 Bd7 16.Ne5 Ra5 (16...Qd6 17.d4 cd3 18.Nd3 Nd3 19.Bd3+=) 17.Nd7 (better is 17.Bc4 Rfa8 18.Qb4+/–) 17...Nfd7–/+ 18.Rfa1 Rfa8 19.f4 Nb3 20.R1a2 Ndc5 21.Qc2 Qa7 22.d3? (better is 22.f5+=) 22...cd3–+ 23.Bd3 Nd3 (23...Nd3 24.Qd3 Nc1–+) 0–1. Fournier,Frederic – Caron_Britene,Christian, Train France (FRA), 2000.

3.c5 Qb4-/+ 4.Ba3 Qg4 (4...Qa5 5.e4-/+) 5.h4 (5.Nc3 d6-/+) 5...Nf6 6.Nf3 d5 7.g3 Nbd7 8.Nc3 e6 (8...Qh5 9.d4-+) 9.Qb3 (9.d4!?-/+) 9...Bc5 10.Bh3 Qg6 11.e3 (11.d4 Ba3 12.Qa3 b6-+) 11...0-0 12.Bc5 Nc5 13.Qa3 b6 14.Ne5 Nd3 15.Nd3 Qd3 16.Bf1 Qf5 17.d4 Ne4 (17...e5!? 18.de5 Qe5 19.Be2-+) 18.Ne4 Qe4 (18...de4 19.Qc3-+) 19.Rg1 (19.Rh2 e5 20.Bd3 Qg4 21.de5 c5-+) 19...e5 20.Bg2 (20.Bd3 Qf3 21.de5 f6-+) 20...Qg6 (20...Qf5 21.de5 Qe5 22.Rc1-+) 21.de5 Re8 22.Qd6 (22.Qb2 Bg4-+) 22...Qd6 (better 22...Qc2!? 23.Qa3 Bg4-+) 23.ed6-/+ Rd8 24.e4 Rd6 25.ed5 cd5 26.Rd1 (26.Rc1 Bg4 27.Kd2 Re8-+) 26...Be6 27.f4 (27.Rc1 b5-+) 27...Re8 (27...Rc8 28.Kd2-+) 28.Kf2 g6 (28...d4 29.Rd2-+) 29.Rge1 Red8 (29...d4 30.a3-+) 30.Rc1 (30.Rd4 Rc8-+) 30...h5 31.Rc7 R8d7 32.Rc8 Kg7 33.Bf1 Rb7 34.Ba6?? (34.Rc2-+) 34...Bc8 35.Bb7 Bb7 36.Re7 Ba6 37.Ra7 Bc4 38.a4 b5 (38...d4 39.Ke1-+) 39.a5 (39.ab5 d4 40.Ra6 Rd5-+) 39...b4 40.Rc7 (40.Ke3 Re6 41.Kd4 b3-+) 40…Ra6 0-1. mirabi - vabanque (1995), Rated Blitz tournament, lichess.org, 2014.

3.g3 Qb4 4.e3 –/+.

3.g3 d6 4.Nc3 (4.a3 a5 5.Qa4 Nd7=+) 4...Nf6 (4...Qb4 5.e4–/+) 5.e3 (5.a3 e5=+) 5...a5 (better is 5...Qb4!? 6.Rb1 Qa5–/+) 6.b5= g6 (6...e5 7.d4=) 7.Rb1 Qd8 (7...Bg7 8.Bg2 c5 9.Bb2=) 8.Nf3 (8.Bg2 Bg7=) 8...Bg7 9.d4 d5 (9...0-0 10.bc6 bc6 11.Bg2=) 10.c5 0-0 11.b6 (11.Bd3 cb5 12.Rb5 Nc6=) 11...Nbd7 (11...Bf5 12.Bd3=) 12.Bd3 (12.Bb2 Re8=) 12...e5 13.Be2 (13.Ne5 Ne5 14.de5 Nd7=) 13...e4 (13...ed4 14.ed4 Ne4 15.Na4=+) 14.Nd2= Ne8 15.f4 (15.0-0 Qg5=) 15...ef3 16.Bf3 (better is 16.Nf3!? Ndf6 17.Qc2=) 16...Nc5!–/+ 17.dc5 (17.0-0 Bf5 18.Ba3 Bb1 19.Qb1 Nd7–/+) 17...Bc3 ½–½. Ackermann,Robert – Schraufl,Wolfhardt, Mittelfranken–ch NT, 1999.

4.c5 Qc7 5.Bb2 d6 6.d4 Nd7 7.Nf3 e4 8.Nfd2 d5 9.e3 Ngf6 10.Be2 g6 11.0-0 Bh6 12.Nc3 White prepares b5 12...0-0 13.b5 Re8 14.a4 a5 15.b6 Qd8 16.Bg4?? (16.Rb1 Bg7+=) 16...Bg7?? (better is 16...Ng4 17.Qg4 Nc5–+) 17.Bh3+= h5 18.Ne2 Bh6 19.Ng3 Nf8 20.Qe1 (better is 20.Bc8 Qc8 21.Ne2+=) 20...Bh3–/+ 21.gh3 Qd7 22.Kg2 h4 23.Ne2 N8h7 24.Nf4 (better is 24.f4!? ef3 25.Nf3+=) 24...Bf4–+ 25.ef4 Qf5 26.Qe3 Nh5 27.f3? (27.Kh1 N7f6–/+) 27...Nf4 (better is 27...Qf4 28.Qf4 Nf4 29.Kh1 e3–+) 28.Kh1 ef3 29.Qf3 Re2 (29...g5–+) 30.Bc1? (better is 30.Qe2! Ne2 31.Rf5 gf5 32.Nf3=) 30...Qh3–+ 31.Rf2?? (better is 31.Qh3 Nh3 32.Ra3 Nf2 33.Kg1–+) 31...Rf2 32.Qf2 Nh5 (better is 32...Re8 33.Ne4 Nd3–+) 33.Nf3 (33.Ra3 Qg4–/+) 33...Qf5 (33...Ng3!? 34.Kg1 Ne4 35.Qf1 Qf1 36.Kf1–+) 34.Be3 N7f6 35.Ne5 Qf2 36.Bf2 g5 37.Be3 Ne4 38.Rg1 f6 39.Ng6? (39.Ng4–+) 39...Kf7 40.Bg5 Ng5 41.Nh4 Re8 (better is 41...Ng7!? 42.Rg4–+) 42.Nf5 Re2 (42...Ne4!? 43.Rf1–+) 43.Nd6 Ke6 (better is 43...Kf8 44.Rf1 Re7–+) 44.Nb7?? (44.Rf1 Ra2 45.Nb7 Ra4 46.Rb1–+) 44...Nf3 45.Nd8 Kd7 46.Rg7 Kd8 47.Rg8 Ke7 48.Rg7 Ng7 49.b7 Rh2 0–1. avinoam – sobtkija (1835), playok.com, 2013.

4.Nf3 e4 5.c5 Qc7 6.Nd4 g6 (better is 6...d6!? 7.Qc2 Nf6+=) 7.Bb2+/– Qe5? (better is 7...Nf6!?+/–) 8.Qc2 Bg7 9.Ra2 (9.Ra2 Qd5 10.Nc3+–) 1–0. Fournier,Frederic (2315) – pekefritz (1785), Active, 2008.

4.Bb2 f6 5.e3 Bg7 6.Nf3 d6 7.Be2 g5 (7...a5 8.Qa4+=) 8.Nd4 (8.Ng5!? Nh6 9.Qc2+–) 8...Qc7 (8...e5 9.Nb3+=) 9.Bh5 Kd7 (9...Kd8!?+=) 10.Bg4+– Ke8 11.Ne6 Be6 12.Be6 Nh6 13.Qh5 Kf8 (13...Kd8 14.Nc3+–) 14.h4 Nf5?? (better 14...g4+–) 15.Bf5 (15.Qf7) 15...Nd7 (15...e5 16.hg5 fg5 17.Qg5+–) 16.hg5 (16.Be6 Ne5 17.Be5 fe5 18.Qf7) 16...fg5 (16...e5+–) 17.Bg7 (17.Be6 Ne5 18.Be5 Be5 19.Qf7) 17...Kg7 18.Qg5 (18.Be6 Kf6 19.Qf7 Ke5 20.Qf5) 18...Kf8+– 19.Rh7 Rg8 (19...Rh7 20.Bh7 Nf6+–) 20.Qh6 (20.Qe7) 20...Ke8+– 21.Rh8 Nf6 22.Qg6 Kd8 (22...Kf8 23.Be6 Rh8 24.Qf7) 23.Rg8 Ng8 24.Qg8 1–0. GuestPLVP – GuestQVPK, freechess.org, 2017.

4.Bb2 Nf6 5.e3 Bg7 6.c5 Qc7 (6...Qd8 7.Nf3=) 7.Nf3 0-0 8.Be2 d5 (8...d6 9.0-0=) 9.d3 (9.0-0 Nbd7+=) 9...Bg4 (9...Nbd7 10.d4=) 10.Nbd2 Bf3 (10...Nbd7 11.h3 Bf3 12.Nf3=) 11.Nf3+= Nbd7 12.0-0 Rad8 (12...e5 13.d4+=) 13.a4 (13.d4 Ne4+=) 13...b6 (13...Rfe8 14.Qc2=) 14.d4 (14.cb6 Qb6 15.Rb1 Rb8+=) 14...bc5= 15.dc5 (15.bc5 Ne4=) 15...e5 (15...a5 16.Qe1=) 16.Qb3 (16.Rb1 Rb8 17.b5 Rfe8=) 16...h6 (16...a5 17.b5=) 17.Rfc1 (17.Rac1 Ne4=) 17…Rfe8 0–1. jlbaf – alexp, net–chess.com, 2017.

4.Ba3 Qa5 (4...Qc4!? 5.Nf3–+) 5.e4 d6 6.f4 (6.Nc3 Nf6–/+) 6...Nf6 7.Bd3 (7.Nc3 e5–/+) 7...Bg4 (7...e5 8.f5–/+) 8.Ne2 Nbd7 9.h3 (9.Nbc3 e5–/+) 9...Be2 10.Ke2? (10.Qe2 e5–/+ (10...Qa4?! 11.e5=)) 10...Qh5 (better 10...Nh5!? 11.Ke1 Ng3–+) 11.Kf2 (11.g4 Qa5–/+) 11...g5 (better 11...Nc5 12.Qc2 Nd3 13.Qd3 g5–+) 12.g4? (better 12.Qh5 Nh5 13.Bb2–/+ (13.fg5? Bg7 14.Ra2 Bd4 15.Ke1 Ng3–+)) 12...Qh4–+ 13.Kf3? (13.Ke2–+) 13...gf4 14.Kf4 (14.Qf1 h5 15.Ke2 hg4 16.Kd1–+) 14...Bh6 (14...Qf2 15.Qf3 Bh6 16.g5 e5 17.Kf5 Qf3) 15.Kf3–+ Ne5 16.Kg2 Nd3 17.Rf1 (17.Qf3 Ne4 18.Bd6 Ne1 19.Re1 Qe1–+ (19...ed6?! 20.Re4 Kd8 21.Rd4=+)) 17...Nf4 18.Kf3 (18.Rf4 Bf4 19.Qf3–+) 18...Qh3 19.Kf2 Qg2 20.Ke1 (20.Ke3 N4d5 21.Kd3 Qe4) 20…Nd3 0–1. afsharian – bluelightwasmymind (1660), lichess.org, 2018.

4.e3 Na6 5.Nc3 Nc5 6.Nf3 Nf6 7.Be2 Nce4 (7...d6 8.Ba3 Qa5 9.0-0=+) 8.Ne4 Ne4 9.0-0 e6 (9...d5 10.cd5 cd5 11.Bb5 Kd8 12.Ba3+=) 10.d3 (10.a5!? Qe7 11.Bb2=) 10...Nc3=+ 11.Qc2 Ne2 12.Qe2 d5 13.Ba3 Qa5 14.Bf8 Rf8 15.Nd4 (15.d4=) 15...f5 (15...e5 16.Nf3 dc4 17.dc4=+) 16.Nb3 (16.Qh5!? Rf7 17.Qh7+=) 16...Qb6 17.Rab1 Qc7 (17...dc4 18.dc4 Qc7 19.Qh5 g6 20.Qe2=+) 18.Nc5 (18.d4!?=) 18...b6=+ 19.Nb3 g6 (19...dc4!? 20.dc4 e5=+) 20.cd5= ed5 21.e4 (21.Rfc1 Qd6=) 21...Rf7 (21...de4 22.de4 Kf7 23.e5=+) 22.ed5= Re7 23.Qf3 cd5 24.Qd5 Bb7 25.Qg8 (25.Qd4!?=) 25...Kd7=+ 26.Qc4 Qd6 (26...Qc4 27.dc4 Bc6 28.Ra1=+) 27.Rfe1 Re1 28.Re1 Rf8 (28...Qd5 29.f3 Qc4 30.dc4=) 29.Nd4 (29.Qc3 Bd5 30.Nd2+=) 29...Bd5 (better 29...Qd5!? 30.Nf3 Qc4 31.Ne5 Ke6 32.dc4 Be4=) 30.Qb5 Bc6?? (better 30...Kc7+/-) 31.Qc6 (better 31.Nc6 Qc6 32.Re7 Ke7 33.Qc6+-) 31...Qc6= 32.Nc6 Kc6 33.Re7 a5 (33...Rd8!? 34.Ra7 Rd3=) 34.Rh7+= Rd8 35.Rg7 (35.Rh6 Rd3 36.Rg6 Kc7+=) 35...Rd3 36.Rg6 Kc5 37.g3 Rd4 38.Rg5 Ra4 39.Rf5 Kc6 40.Rf6 Kb7 (40...Kc5 41.h4+=) 41.h4+/- Ra1 42.Kg2 a4 43.h5 a3 (better 43...Rd1+/-) 44.h6?? (better 44.Rf3 b5 45.h6+/-) 44...a2=+ 45.h7?? (better 45.Rf7 Ka6 46.h7 Rg1 47.Kg1 a1Q 48.Kg2=+) 45...Rc1 (better 45...Rg1! 46.Kf3 Rh1 47.Rf7 Ka6-+) 46.h8Q (46.Rf7 Ka6 47.Rf8 a1B 48.Ra8 Kb5 49.Ra1 Rc8+-) 46...a1Q 47.Rf7 Ka6 48.Qa1 (better 48.Qa8!? Kb5 49.Qe8 Kb4 50.Rf4 Rc4 51.Qe7 Kb3 52.Qe3 Rc3 53.Qb6 Kc2 54.Qg6 Kc1 55.g4+-) 48...Ra1+/- 49.g4 b5 50.g5 b4?? (better 50...Ra4 51.f4 Kb6+-) 51.g6 b3 (51...Ra5 52.Rf3 b3 53.Rb3 Rd5+-) 52.g7 b2 53.g8Q Rg1 54.Kg1 b1Q 55.Kg2 (better 55.Kh2 Qb6 56.Qa8 Kb5+-) 55…Qe4 (55...Qe4 56.Kg3 Qd3 57.f3 Qd6 58.f4 Kb6+-). dym7 (1695) - Surya143232 (1620), Rated Blitz game, lichess.org, 2021.

4.e3 d6 5.Nf3 (5.Nc3 Qa5=+) 5...g6 (5...Nf6 6.Be2–/+) 6.a5=+ Bg7 7.Ba3 Qa5 8.Bb2 Qa1 (8...Bb2 9.Ra5) 9.Ba1 Ba1 10.d4 c5? (better 10...Bf5 11.Qb3 Nd7+–) 11.Qa4+– Nc6 1–0. onur604 (2320) – SlavChernus (2260), lichess.org, 2020.

4.Bb2 d6 5.e3 Nf6 6.a3 Be7 7.Nf3 (7.d4 e4=) 7...0-0 8.Nc3 Bg4 9.Be2 Nbd7 10.0-0 Rac8 (10...a5 11.Na4 Qc7 12.Nc3=) 11.h3 Bh5 12.d4 e4 13.Nd2 Be2 14.Ne2 d5 15.cd5 (15.Nc3 a5=) 15...cd5 16.Nf4 (16.Nc3 Qc6=) 16...Qd6 (16...Qb5 17.Rfd1=+) 17.Rac1 Nb6 18.Rc3 Rc3 19.Bc3 Rc8 20.Rc1 g5 21.Ne2 Bd8 (21...g4 22.Nf4=+) 22.a4 (22.Qd1 Bc7 23.Ng3 Qe6=) 22...Bc7 23.Ng3 h5 (23...g4 24.a5 Nbd7 25.hg4 Ng4 26.Bb2=) 24.a5= Nbd7 25.b5 (25.Qa4 h4 26.Ngf1 Qc6=) 25...Bb8 (25...Ba5 26.Rc2 Bc3 27.Rc3 Rc3 28.Qc3=+) 26.Kf1 (26.Rc2!? Qe6 27.Bb4 Rc2 28.Qc2=) 26...h4=+ 27.Nf5 (27.Ne2 Qh2 28.Ng1 Qh1-+) 27...Qe6-/+ 28.Nh6 Kg7 29.Ng4 Ng4 30.hg4 Qg4 31.Kg1?? (better 31.Qa3-/+) 31...h3-+ 32.g3 Bg3 (32...Bg3 33.Qd1 Bf2 34.Kf2 Qg2 35.Ke1 h2-+) 0-1. The Black Bishop (1965) - Dlanor (2000), ChessWorld.net, 2005.

4.c5 Qc7 5.Bb2 b6 6.Nf3 f6 7.a3 (7.d4!?=) 7...bc5=+ 8.bc5 Bc5 9.d4 ed4 10.Nd4 Qb6 11.Qc3 Ne7 12.e3 Ba6 13.Ba6 Na6 14.0-0 Rb8 15.Ra2 Bd4 16.ed4 Qb3 17.Re1?? (17.Qb3 Rb3 18.Nd2 Rd3–/+) 17...Qc3 (better 17...Qa2 18.Qe3 0-0–+) 18.Nc3 Kf7 19.Bc1 d5 20.Bf4 Rb3 21.Bd6?? (better 21.Ne2–/+) 21…Nf5–+ 0–1. GuestMNLQ – GuestFWDF, freechess.org, 2017.

4.c5 Qc7 5.Bb2 d5 6.Qg3 f6 7.d4 Na6 8.a3 (worse is 8.de5 Nb4 9.Kd1 A) worse is 9...Bc5 10.ef6 Qg3 11.fg7 (11.fg3? Nf6 12.a3 Ne4 13.ab4 Bb4–+) 11...Qg7 12.Bg7+/–; B) 9...Bf5–/+) 8...ed4 9.Bd4 Nh6 10.Qc7 Nc7 11.Nf3 Ne6 12.Bb2 b6 13.cb6 ab6 14.e3 Bd6 15.Be2 Kf7 16.0-0 Ba6 17.Ba6 Ra6 18.Nbd2 Rha8 19.e4 de4 20.Ne4 Be7 21.Rad1 c5 22.Nd6 Bd6 23.Rd6 Nf5 24.Rd5 Ne7 25.Rd6 Nf5 26.Rd5 ½–½. Colomer Camarasa,Jordi (1925) – Lopez Pajuelo,Aleix (1720), Llinars del Valles ESP, 6th Open, 2012.

4.cb5 Qb5 5.e3 Qa5 6.Nf3 Nc6 7.Be2 e6 (7...e5 8.Bb2-/+) 8.Bb2 d5 9.0-0 Nf6 10.Qc2 Be7 11.Nc3 a6 12.a3 h6 (12...e5 13.d4 ed4 14.Nd4 Nd4 15.ed4-/+) 13.Rac1 0-0 (13...Ba3? 14.Ra1+-) 14.d4 Bd6 (14...Ba3? 15.Ra1+-) 15.Na4 Ne4 16.Rfd1 (16.Nc5 Nc5 17.dc5 Be7=+) 16...Qd8 (16...Bd7 17.Nc5 Bc5 18.dc5-/+) 17.Bd3 Nf6 18.Ne5 (18.Qb3 Bd7=+) 18...Na5 (18...Be5 19.de5 Ng4 20.Be2 Nge5 21.e4=+) 19.Nc5=+ b5 20.a4 Nc4 21.Ra1 Bc5 22.dc5 Nb2 (22...Qc7 23.Bc4 bc4 24.c6=+) 23.Qb2= ba4 24.Ra4 Qc7 25.c6 Ne8 26.Rb1 f6 27.Ng6 Rf7 28.Qc2 Nd6 29.Qc5 Bb7? (better 29...a5=) 30.cb7+- (30.cb7 Nb7 31.Qc7 Rc7 32.Ra6 (worse 32.Ba6 Nc5 33.Ra3 Ra6 34.Ra6 Na6-/+) 32...Ra6 33.Ba6+-; 30.Rb7?! Nb7 31.cb7 Rb8+/- (31...Qc5 32.ba8Q Rf8 33.Nf8 Qf8 34.Bh7 Kf7 35.Qb7 Qe7 36.Bg6 Kg6 37.Qe7 d4 38.Qe6 Kh7 39.Qe4 f5 40.Qf5 Kg8 41.Ra6 g5 42.Ra7 de3 43.Qc8; worse 31...Qb7 32.Qd6+/-)) 1-0. DEFFM – GuestGCXD, freechess.org, 2021.

4.cb5 Qb5 5.e3 Qc6 6.Nf3 a6 7.Bb2 d6 8.Nc3 b5 9.Qb3 Be6 10.Nd4 Bb3 11.Nc6 Nc6 (11...Bc4 12.Nb4=+) 12.ab3= 0-0-0?? (better 12...Ra7=) 13.Ra6+- Kb7 14.Bb5 Na7 15.Be2 e6 16.0-0 Nf6 17.Rfa1 Ra8? (17...Nc8+-) 18.Nb5 1-0. onur604 (2320) - Gataca2 (2215), Casual Rapid game, lichess.org, 2021.

4.cb5 Qb5 5.e3 Qc6 6.Nf3 a6 7.Nc3 b5 8.Bd3 Nf6 9.0-0 Bb7 10.Bb2 e5 11.Bf5 d6 12.Rc1 Qb6 13.d4 e4 14.Ng5 (14.Nd2 d5=+) 14...d5 15.Qb3 h6 16.Nf7 Kf7 17.Ne4 g6 18.Nf6 Kf6 (18...gf5? 19.Nd5 Qe6 20.Rc7 Nd7 21.Rb7+-; 18...Qf6 19.Rc7 Ke8 20.Rb7 Qf5 21.e4 de4 22.f3+/-) 19.Be4 Qd6 20.Bf3 Nd7 21.e4 de4 22.d5 Kf7 23.Be4 Bg7?? (23...Nf6 24.Rfe1 Rd8+/- (24...Ne4 25.Re4 Qd5 26.Rc7 Kg8 27.Qc3 Qd4 28.Qd4 Rh7 29.Rh7 Kh7 30.Qh8)) 24.Ba3 b4 (24...Qf4 25.d6 Kf8 26.Bb7 Rb8+-) 25.Bb4 Qb6 (25...Qf4 26.d6 Kf8 27.Bb7 Rb8+-) 26.d6 Kf8 27.Bg6 Bd4 28.Qf7 1-0. onur604 (2320) - Gataca2 (2215), Casual Rapid game, lichess.org, 2021.

4.cb5 Qb5 5.e3 Qe5 6.Nc3= e6 7.Nf3 Qf6 (7...Qa5!?=) 8.Bd3+= Bb4 9.Bb2 Qd8 10.Ne4 Qa5?? (better 10...Nf6 11.Nf6 gf6+=) 11.Bg7+- Qa3 (11...d5 12.Ng3 Nf6 13.Bh8+-) 12.Qc2 f5 (12...Nc6 13.Bb2 Qa5 14.Bh8 f5+-) 13.Qc8 Kf7 14.Bh8 Qd3 15.Ne5 Ke7 1-0. DEFFM – yetbel, freechess.org, 2021.

4.e3 bc4 5.Bc4 Nf6 6.Nf3 d5 7.Bb3 Nc6 8.0-0 e6 9.Bb2 Be7 10.Nc3 0-0 11.Ne5 Ne5 12.Nd5 Nd5 13.Be5 Bf6 14.d4 Be5 15.de5 Ne7 16.Qg4 Ng6 17.Qh5 Bd7 18.Rfd1 Rfd8 19.Rab1 Qa5 20.f4 Bc6 21.Rdc1 Qd2 22.Qf3 Bf3 23.gf3 Qe3 24.Kg2 Qe2 25.Kg3 Rd3 26.Bd1 Rf3 27.Kg4 Qg2 28.Kh5 Rh3 0–1. dtpwaldi – antoni64, kurnik, 2013.

4.Rb1 Qc4–/+ 5.e4 Qe6 6.Nf3 d6 7.Ng5 Qg6 8.d4 h6 9.Nf3 Nf6 10.Qe2 (better is 10.Qc2–/+) 10...Ne4?? (better is 10...Nbd7–/+) 11.Ne4+/– (< 11.Qe4 Bf5 12.Qe2 Bb1–/+) 11...d5 12.Nc3 Nd7 13.Qd1 Nb6 14.Bd3 Qd6 15.0-0 Bg4 16.h3 Bf3 17.Qf3 e6 18.Bf4 Qd7 19.Qg4 f5 20.Qh5 Qf7 21.Qf7 Kf7 22.Bc7 Be7 23.Bb6+/– ab6 24.Rb6 Ra7 25.a4 Bd8 26.Rb3 Ba5 27.Bc2 Rc8 28.Rfb1 Rc7 29.Ne2 b6 30.g4 fg4 31.hg4 g5 32.Rh3+– Kg7 33.Kg2 Ra8 34.Rbh1 Rh8 35.Ng3 c5+/– 36.Nh5 Kf7 37.Rf3 Ke7+= 38.Bg6. alexp (2390) – blackpanther (2410), net–chess.com, 2004.

4.e3 e5 5.Rb1 Qe7 (5...Qa5 6.Qb3–/+) 6.d3 (6.Nf3 Nf6=+) 6...Nf6 7.Be2 (7.Nf3 Na6=+) 7...d6 (7...d5 8.Nf3–/+) 8.Nf3 g6 (8...Nbd7 9.e4=+) 9.0-0 (9.e4 Bg7=+) 9...Bg7 10.Ba3 (10.e4 0-0=+) 10...Na6 (10...0-0 11.d4 e4 12.Nd2=+) 11.d4= ed4 12.ed4 0-0 (12...Bf5 13.Rb2=) 13.Bd3 (13.c5 d5= (13...dc5? 14.Ba6 ba6 15.Bc5+–)) 13...Bg4 (13...Qc7 14.c5 d5 15.Re1=+) 14.Re1 Qd7 15.h3 Bf3 16.Qf3 Rfe8 17.Red1 (17.Ne2 Rab8=+) 17…Nc7 (17...Nc7 18.Rb7 Reb8+–). alexp – jlbaf, net–chess.com, 2017.

4.e3 e5 5.Nf3 d6 6.Be2=+.

4.e3 Nf6 5.a4 (5.Nf3 d6–/+) 5...Qa5 (5...e5 6.Nf3 Qa5 7.Bb2–/+) 6.Ba3 (6.Nf3 e5–/+) 6...Na6 (6...e5 7.Bf8 Rf8 8.Rb1–/+) 7.Bd3 (7.Nf3 e5–/+) 7...e5 8.Bf8 Kf8 (8...Rf8 9.Nf3–/+) 9.Nge2 (9.Nf3 d6–/+) 9...h5 (9...Nb4 10.Qb1–/+) 10.0-0 (10.f4 d6=+) 10...h4 11.h3 (11.f4 d6=+) 11...d6–/+ 12.f4 (12.Qb1 b6–/+) 12...Kg8 (12...Be6 13.f5 Bd7 14.Ne4–/+) 13.fe5 (13.Rb1 Be6–/+) 13...de5 14.Rf6? (better 14.Bf5!?–/+) 14...gf6–+ 15.Ne4 (15.Nc1 Be6–+) 15...f5 16.N4c3 (16.Nf2 Be6–+) 16...Be6 17.Nc1 Nc5 (17...Rd8 18.Rb1–+) 18.Be2 (18.Nb3 Nb3 19.Qb3 Rd8–+) 18...Rd8 19.Qc2 Rh7 20.Rb1 (20.d3 Rg7 21.Kh2 Rg3–+) 20...Rg7 21.N1a2 (21.Kh1 b6–+) 21...Rd7 22.Ra1 (22.Rb2–+) 22…Qd8 0–1. alexp – pcmvr, net–chess.com, 2017.

4.e4 e5=+.

4.Nf3 Qc5 5.d4= Qa5 6.Bd2 Qb6 (6...Qf5 7.Nc3=) 7.Bd3 Qb2 (7...Nf6 8.0-0=) 8.Bc3 Qb6 9.0-0 d6 10.Nbd2 (10.Qd2 Qc7=) 10...Qc7 (10...Nf6 11.e4=) 11.e4 f6 12.e5 d5 13.Re1 e6 14.Qc2 Be7 (14...f5 15.Rab1+=) 15.Bb2 (15.Bh7 Bf8+–) 15...f5 (15...Kd8 16.Bh7 f5 17.Bg6+–) 16.cd5+– White gets strong initiative 16...ed5 17.Bf5 g6 (17...Bf5 18.Qf5 g6 19.Qd3+–) 18.Bc8 Qc8 19.Qb3 b5 20.Rac1 Qg4 21.h3 Qh5 22.e6 Nf6 (better 22...Bf6!?+–) 23.Ba3+– Ba3 24.Qa3 g5 (24...Qf5 25.Qd6 Ne4 26.Ne4 de4 27.Rc6 Nc6 28.Qc6 Ke7 29.Qb7 Ke6 30.Re4 Kd6 31.Qa6 Kd5 32.Qb5 Kd6 33.Qb4 Kd5 34.Qb7 Kd6+–) 25.Ne5 a6 (25...g4 26.Nf7 b4 27.Qb4 gh3 28.Nd6 Kf8 29.Nf5 c5 30.Qc5 Kg8 31.Qe7 h2 32.Kh1 Ne8 33.Nh6 Qh6 34.Qf7) 26.Qd6 g4 (26...Rg8 27.Nf7 Qf7 28.ef7 Kf7 29.Re7 Kg6 30.Nf3 Rg7 31.Ne5 Kh6 32.Qf6 Rg6 33.Qf8 Kh5 34.Rh7 Rh6 35.Qh6) 27.Nf7 Rg8 (27...Qf7 28.ef7 Kf7 29.Re7 Kg6 30.Nf3 Rg8 31.hg4 Ra7 32.Nh4 Kg5 33.Re5 Kh4 34.Qa3 Kg4 35.Qg3) 28.Qd8 1–0. DEFFM – GuestJGVR, freechess.org, 2020.

4.Nf3 g6 (4...d6 5.Nc3=+) 5.a3 Qb6 (5...Qa5 6.Bb2 Nf6 7.Bc3=) 6.Qc2 (6.d4 d5=) 6...Bg7=+ 7.Nc3 e6 (7...d6 8.Rb1 Qc7 9.Be2=+) 8.Rb1 (8.Bb2 f6=) 8...Qc7 (8...Qd8 9.c5=) 9.Be2 (9.Bb2 e5=) 9...Ne7 (9...d6 10.d4=) 10.0-0 (10.Bb2 0-0=) 10...0-0 11.d4 (11.c5 b6 12.d4 Ba6=) 11...d5 (11...d6 12.Rd1=) 12.c5 (12.Rd1 b6=) 12...Nd7 (12...b6 13.Na4 Nd7 14.Rd1=+) 13.Nd2 (13.e4!?=+) 13...e5–/+ 14.f3? (better is 14.Nf3–/+) 14...ed4–+ 15.ed4 (15.Nd1–+) 15...Bd4 16.Kh1 Bc5 (16...Nc5 17.g4–+) 17.Na4 (17.f4 Qd6–+) 17...Bd6 18.Bb2 (18.g3 Ne5 19.Nc5 Bf5–+) 18...Bh2 19.Bd4 (19.Rfd1 Bd6–+) 19...Nf5 (20.Nb3 Qf4–+) 0–1. gtate (2060) – bigal (2100), net–chess.com, 2006.

4.Qa4 e5 5.Bb2 d6 6.Nf3 Na6 7.e3 Nc5 8.Qc2 (8.bc5 Qb2 9.Bd3 Qa1–+) 8...ab4 9.ab4 Ra1 10.bc5 Rb1 11.Qb1 Qc5 12.Be2 Qa5 13.Bc3 Qc7 14.0-0 f5 15.d4 e4 16.Ng5 Be7 17.Nh3 Nf6 18.Qb3 0-0 (18...d5 19.c5+=) 19.Ra1= d5 20.Nf4 Bd6 21.cd5 Nd5 22.Nd5 cd5 23.Qd5 ½–½. Bendig,Frank (2365) – Klawitter,Rolf (2110), RSM2007 remoteschach.de, 2008.

4.ba5 Qd4 5.Nc3 Qc4 6.Na4 Ra5 7.Nb6 =.

4.Bb2 (--> 1.b4 c6 2.Bb2 Qb6 3.a3 a5 4.c4).

4.b5 d5 5.e3 Nf6 6.Nc3 e5 7.bc6 bc6 8.Nf3 d4 (8...e4 9.Nd4=) 9.ed4 (9.Na4 Qc7+=) 9...ed4= 10.Na4 Qa7 11.Qe2 Be7 12.c5 (12.Rb1!? Nbd7 13.Bb2=) 12...0-0=+ 13.Qc4 (13.Bb2!? Bc5 14.Nc5-/+) 13...Re8-/+ 14.Be2 (14.d3 Ba6 15.Qc2 Bb5-/+) 14...Ba6-+ 15.Qb3 Be2 16.Ke2 Bc5 (16...Nbd7 17.Re1-+) 17.Kf1 Nbd7 18.g3 (18.Bb2!?-/+) 18...d3!-+ 19.Qd3 Bf2 (19...Ne4 20.Bb2-+) 20.Kg2 Rad8 21.Qc4 Ne5 22.Ne5 Re5 23.Rf1 Bd4 24.Rb1 Rde8 25.Qc6 (25.Nc3 Bc3 26.dc3 Re2 27.Kh1-+) 25...Re2 26.Kh3 (26.Kf3 Bg1 27.Nc5 Bc5 28.Qb7-+) 26...Qe7 (26...Bg1 27.g4 Qd4 28.Rb4 ab4 29.Qd7 Rh2 30.Kg3 Ne4 31.Kf3 Rf2 32.Rf2 Qf2) 27.Rf4?? (better 27.Nc3 Bc3 28.dc3-+) 27...Qe5 28.Qf3 Rf2 (28...Bg1 29.g4 Rh2 30.Kg3 Qe1 31.Qf2 Ne4 32.Re4 Qf2) 29.Qf2 Bf2 30.Rf2 (30.Nc3 Bd4 31.Rb5 Qe6 32.Kh4-+) 30...Qe4 (better 30...Qe6 31.Kg2 Qe4 32.Kh3 Qb1-+) 31.Nc3 Qc6 32.Rb5 (32.Rf4 h6 33.Rb5 Ne4-+) 32...h6 (32...Ne4 33.Rff5 g6 34.Ne4 gf5 35.Nc3-+) 33.Rbf5? (33.Rf1 g5 34.Rf2 Re1-+) 33...a4 (33...Qc8 34.Kg2 Re1 35.Rf1 Rc1 36.Rf6 Rc3 37.dc3 gf6 38.Rf6-+) 34.Bb2? (34.Rf1 Nh7 35.g4 Ng5 36.Kg3 Rd8-+) 34...Nh7 (34...Qd7 35.g4 Ng4 36.Kg4-+) 35.Nd5? (35.d4 Ng5 36.Kh4-+) 35...Ng5 36.Kg2 (36.Kh4 Ne4 37.Nb4 Qd7-+) 36...Qb7 (better 36...Rd8 37.h4 Rd5 38.Rd5 Qd5 39.Kh2-+) 37.h4 Ne6 (37...Qb2?! 38.hg5 hg5 39.Rg5-+) 38.Bc3 Rd8 (38...Nc7 39.Rf7 Qd5 40.R2f3 Qf7 41.Rf7 Kf7 42.Kf2-+) 39.Kh2 (39.Rf7 Qd5 40.Kh2-+) 39...Rd5 40.Rf7 Rd7 (better 40...Qf7 41.Rf7 Kf7 42.Kg2-+) 41.R7f5 Rd8 42.Bb4 Qc6 (42...Rd3 43.Bc3-+) 43.Re5 Nd4 44.Re3 Re8 45.Rd3 (45.Re8 Qe8 46.Rf8 Qf8 47.Bf8 Kf8 48.Kg2-+) 45...Re1 46.Rg2 (46.Kh3 Qh1 47.Rh2 Qf1 48.Rg2 Qd3 49.Rf2 Rh1 50.Kg4 Qe4 51.Kh5 Qe5 52.Kg6 Qg3 53.Kh5 Rh4) 46...Nf3 (46...Qc1 47.Kh3 Rh1 48.Kg4 Qc8 49.Kf4 Qf5 50.Ke3 Qe5 51.Kf2 Qe2) 47.Kh3 (47.Rf3 Qf3 48.Bc5-+) 47...Rh1 48.Kg4 (48.Rh2 Rh2 49.Kg4 Qe4 50.Kh5 Qf5) 48...Ne5 (48...Qe4 49.Kh5 Qf5) 49.Kf5 (49.Kf4 Nd3 50.Ke3 Nb4 51.ab4 Qg2 52.b5 Qg3 53.Kd4 Qd6 54.Ke3 Re1 55.Kf3 Qd3 56.Kf2 Re2 57.Kf1 Rd2 58.Ke1 Qe2) 49...Nd3 50.Re2 Rf1 51.Kg4 Qd7 (51...Qd7 52.Re6 Qe6 53.Kh5 Qf5) 0-1. Teichmann,E (2240) - Ollier,M (2225), Lyon Rapid Final, 2019.

5.Bb2 d6 6.Nf3 Nf6 7.g3 e5 8.Bg2 Be6 9.Qc2 Be7 10.0-0 0-0 11.d3 Nbd7 12.Nbd2 Nc5 13.Bc3 Qa4 14.Qb2 Qa7 15.Bb4 Na4 16.Qc2 c5 17.Bc3 Rfe8 18.Ng5 Nc3 19.Qc3 Bd7 20.Nge4 Ne4 21.Ne4 f5 22.Nd2 Kh8 23.Rfb1 The backward pawn on b7 becomes a target 23...e4 24.Ra2 (24.de4 Bf6 Combination) 24...Bf6 25.Qc1 Bc6 26.de4 fe4 27.e3 Qa4 28.h4 Kg8 29.Rb6 Re6 30.Qb1 e4 draws heavy fire 30...Rae8 31.Qb3 Qb3 32.Rb3 d5 33.Rb1 d4 34.Nb3 b6 35.a4 Ra8 36.a5 Ra6 37.ed4 cd4 38.c5 b5 39.Rd2 d3 40.Rdd1 Re7 41.Kf1 b4 0–1. pdchessvamp – PeterRs, ChessWorld.net, 2012.

5.e3 Nf6 6.Bb2 d5 7.Bf6 ef6 8.a4 Be6 9.cd5 Bd5 10.Nc3 Be6 11.Nf3 Bc5 12.Be2 0-0 13.0-0 Na6 14.Ne4 Bb4 15.d4 Rfd8 16.Qc1 h6 17.h3 Bd5 18.Ng3 g6 19.Qb1 Kg7 20.Rc1 Bd6 21.Nf1 Nb4 22.N1d2 f5 23.Nc4 Bc4 24.Rc4 b5 25.Rc1 ba4 26.Qb2 a3 27.Qc3 f6 28.Bc4 Nd5 29.Bd5 cd5 30.Qa5 Ra5 31.Ra2 Rb8 32.Rcc2 Rb1 0–1. tyop (1745) – mabeji, kurnik, 2013.

5.Qc2 d5 6.e3 e5 7.cd5 Rd5 8.Nc3 (8.Bc4 Qc5=) 8...Rd8 (8...Ra5 9.Bc4=) 9.Nf3 Bd6 (9...Qa5 10.Bc4=) 10.Ne4+= Qc7 (10...Bc7 11.Bb2 f6 12.Bc4+=) 11.Bb2 Nd7 12.d4 ed4 13.Nd4 (13.Nd6 Qd6 14.Nd4+=) 13...Ngf6 (13...Be5 14.f4 Bd4 15.Bd4+=) 14.Nf5 (14.Nd6 Qd6 15.Nf5 Qf8+/–) 14...Bf8 (14...Be5 15.Be5 (15.Ng7? Kf8–+) 15...Qe5 16.Ned6 (16.Ng7? Kf8 17.Ne6 Qe6–+) 16...Kf8 17.Rc1=) 15.Nd4 (15.Rd1!?+/–) 15...Nd5 (15...Ne4 16.Qe4 Be7 17.Nf5=) 16.Bc4 N7b6 (16...Ne5 17.Bd5 Rd5 18.0-0=) 17.0-0 (17.Bb3 f5 18.Ng3 f4 19.ef4 Qf4+/–) 17...Nc4= 18.Qc4 Bd6 (18...Be7 19.Rab1=) 19.Nd6 Qd6 20.Rfd1 Qc7 (20...Qg6 21.Qc2=) 21.h3 (21.e4 Nf4+=) 21...0-0= 22.Rd2 Qe7 23.Rad1 h6 (23...Rfe8 24.a4=) 24.Nf3 (24.a4 Qe4+=) 24...Be6 (24...Rfe8 25.a4+=) 25.Qd4 (25.Qc2 Rfe8+=) 25...f6 (25...f5 26.Ne5 Rfe8 27.Qd3+=) 26.e4= Nc7 (26...c5 27.Qd3 c4 28.Qc2= (worse is 28.Qc4 Ne3 29.Qe2 Nd1 30.Qd1 f5–/+)) 27.Qb6 (27.Qd8 Rd8 28.Rd8 Kf7+=) 27...Rd2= 28.Rd2 Na8 29.Qa7 (29.Qe3 c5=) 29...Qc7 (29...Bf7 30.Bd4 Qe4 31.Qb7=) 30.Nd4+= Bd7 (30...Bf7 31.Nf5+=) 31.Nb3 Qb6 (31...Be6 32.Nc5 b6 33.Qc7 Nc7 34.Ne6 Ne6 35.Rd6+/–) 32.Qb6 Nb6 33.Nc5 (33.Rd4 Bc8+=) 33...Bc8 34.Rd4 Na8 35.f3 (35.Ra4 Nc7=) 35...b6= 36.Na4 (36.Nd7 Rf7 37.Nb8 c5=) 36...Ba6 (36...Kf7 37.Nc3=) 37.Rd6+= Rc8 (better is 37...Bc4!?+=) 38.Bd4+/– c5 (38...Bc4 39.Nb6 (worse is 39.Bb6 Bb5–/+) 39...Nb6 40.Bb6+/–) 39.Bc5!+– bc5 Exploits the pin (39...Rc5 40.Nc5) 40.Ra6 c4 41.Kf2 Kf7 (41...h5 42.Nc3+–) 42.Ke2 (42.Nc3 Kf8+–) 42...Ke7 (42...h5 43.Nc3+–) 43.Ke1 (43.Nc3 Kf8+–) 43...Kd8 (43...Kf7+–) 44.Nb6 (better is 44.Ra7!? g5 45.Rf7+–) 44...Nb6+/– 45.Rb6 Ra8 46.Rb4 Ra3 47.Rc4 Ra2 (47...Ra1 48.Kf2+/–) 48.Kf1 (48.Rd4 Ke7 49.Rd2 Ra1 50.Kf2 Ke6+/–) 48...Kd7 (48...h5 49.h4+/–) 49.Rd4 (49.Kg1 h5+/–) 49...Ke7 (49...Ke6 50.Rd8+/–) 50.Rd5 (50.Rb4 Kf7+/–) 50...Kf7 (better is 50...Ke6+/–) 51.e5 (better is 51.Rd7 Kg6 52.Kg1+/–) 51...Ke6= 52.Rd6 Ke5 53.Rd7 g6 (53...g5 54.Rh7=) 54.Rg7 (54.Re7 Kf4 55.Re4 Kg5=) 54...Kf5 (54...g5 55.Rh7=) 55.g4 Kg5 56.Rg8 (56.f4 Kh4 57.Rg6 Kh3=) ½–½. Sieradzka,Anna – Jackowska,Aleksandra, Poland–ch U14 Girls, 1998.

5.Qc2 e5 6.Nf3 =.

5.d4 d6 =.

5.e3 e5 6.Nf3 d6 7.Be2 Nf6 8.0-0 Be7 9.Nc3 0-0 10.d4 Nbd7 11.Rb1 Qc7 12.e4 Re8 13.Qc2 ed4 14.Nd4 Nc5 15.a4 h6 16.Bf3 (16.Nb3 Nb3 17.Qb3 Nd7=) 16...Bf8 Will e4 fall? (16...Ng4 17.Rd1=) 17.h3 g6 18.Bf4 Bg7 19.Rfd1 Bf8 20.Nb3 Nb3 21.Qb3 Nd7 22.Qb4 Pawn d6, live or die! 22...Ne5 23.Be2 d5 24.Qb3 dc4 25.Bc4 (better 25.Qc4! Bc5 26.Kf1=) 25...Nf3-/+ 26.gf3 Qf4 27.Ne2 Rg5 (27...Qf6 28.Kg2-/+) 28.Kf1 Bh3 (28...Qc7 29.Ke1-/+) 29.Ke1 Qf6 (better 29...Qc7 30.Qb7 Qa5 31.Rd2 Be6 32.Be6 Re6-/+) 30.Rd7?? (30.f4 Rh5 31.e5 Qe7=+) 30...Re7 (better 30...Bd7 31.f4 Ra5-+) 31.Rbd1?? (better 31.Re7 Qe7 32.f4=+) 31…Bd7-+ 0-1. banjoband (2055) - glvk (2210), Rated Blitz game, lichess.org, 2014.

5.Bb2 e6 6.e3 d5 7.c5 Qc7 8.ab4 (worse 8.Qb4 Nd7-/+) 8...Ra1 9.Ba1 b6 10.d4 bc5 11.bc5 Ba6 12.Ba6 Na6 13.Nf3 Nf6 14.0-0 Ne4 (14...Be7 15.Ne5=) 15.Nbd2 Nd2 16.Nd2 Be7 17.Rb1 0-0 18.Qb6 Qb6 (18...Ra8 19.Bc3=) 19.Rb6+= (worse 19.cb6 Bb4 20.Nf3 Rb8-/+) 19...Nb8 20.Nb3 Rc8 21.Bc3 Kf8 22.Kf1 f6 23.Ke2 h5 24.Kd3 g5 25.e4 (25.Rb7 Ke8+=) 25...Ke8 26.Rb7 Nd7 27.Ba5 Rb8 28.Rb8 Nb8 29.Bc7 (29.f3 Na6+=) 29...Na6= 30.Ba5 Bd8 31.Bd2 de4 32.Ke4 Kd7 33.Na5 f5 34.Ke5 Nc7 35.Nb7? (better 35.Nc4 Nd5 36.Nb6 Nb6 37.cb6 Bb6 38.Bg5 Bc7 39.Kf6 Bh2 40.Bd2-/+) 35...Be7-+ 36.h4 gh4 37.Kf4 Nd5 38.Kf3 Bf6 39.Be3 Kc7?? (better 39...Nb4-+) 40.Nd6= Be7 41.Ne8 (better 41.Nc4!?=) 41...Kd7-/+ 42.Ng7 Bf6 (better 42...f4!? 43.Bf4 Nf4 44.Kf4 Bf6 45.Nh5 Bd4-/+) 43.Nh5= Bh8 0-1. jhonores (2245) - YourBoyKandy (2300), Rated Blitz game, 2020.

5.Qb4?? Qb4-+ 6.ab4 Ra1 7.Bb2 (7.e4 Rb1 8.Kd1-+) 7…Rb1 (7...Rb1 8.Bc1 Rc1) 0-1. Jimito100 (1990) - Jeopa (2160), Rated Bullet game, lichess.org, 2020.

5.cb5 Qb5 6.Nc3 Qh5 7.Nf3 Nf6 (7...d5 8.d4=) 8.e4= e5 9.d4 ed4 10.Nb5 (worse 10.Nd4 Qd1 11.Kd1 Bc5=+) 10...Na6 11.e5 Nd5 (11...Ne4 12.Qd4 Qg6 13.Nh4+–) 12.Be2 Qg6 13.Nfd4 (13.Qd4 Nac7 (13...Qg2? 14.Rg1 Qh3 15.Qd5+–) 14.0-0 Nb5 15.Bb5 Nc7+=) 13...Ndc7 (13...d6 14.ed6 Bd6 15.Qb3=) 14.0-0 (14.Nc7 Nc7 15.0-0 a4+=) 14...Nb5 15.Nb5 Be7 (15...Bc5 16.Bd3 Qb6 17.Rb1+–) 16.Bh5 (16.Bd3 Qc6+=) 16...Qe6 17.Nd6 Bd6 18.ed6 0-0 19.Bb2 Nc5 (19...Qh6!?+=) 20.Qd4+– Qf6 21.Qf6 (21.Qc5?! Qb2 22.Bf3 Ra6+=) 21...gf6 22.Bf6 b6 (22...Re8 23.Rfe1 Ne6 24.Re3+–) 23.Rae1 (23.Rfe1 Ba6+–) 23...Ba6 (23...Bb7 24.Re7+–) 24.Re3 Bd3 25.f4 (25.Rfe1 Bg6 26.Bf3 Rac8+–) 25...Ne4+– 26.Re4 (26.Re4 Be4 27.f5+–) 1–0. pcmvr – pierred, net–chess.com, 2017.

5.cb5 Qb5 6.e3 Qc6 7.Nc3 d5?? (7...Nf6 8.Nf3=) 8.Bb2 (better 8.Bb5 Nf6 9.Nf3+–) 8...Nf6?? (better 8...Qd7=) 9.Bb5+– 1–0. GuestNYQQ – GuestDVZC, freechess.org, 2016.

5.cb5 Qb5 6.e3 Qc6 7.Nf3 b6 (7...d5 8.Nc3 Qd6 9.Bb2=) 8.Nc3 Ba6 9.Ba6 Na6 10.0-0 d6 11.Nd4 Qd7 (11...Qb7 12.Rb1=) 12.Qf3 Rb8 13.Rb1 Nf6 (13...d5 14.Nd5 (worse 14.Qd5 e6 15.Qf3 Bd6+=) 14...b5 15.Nb5+/-) 14.Nc6+/- Rb7 15.Na5! Rb8 (15...ba5 16.Qb7 Discovered attack (16.Rb7 Pinning; 16.Rb7 Deflection)) 16.Nc6 Rb7 17.h3 (17.d4 e6+/-) 17...g6 (17...e6 18.d4+=) 18.Na5 Rb8 19.Nc6 Rb7 20.Bb2 Bg7 21.Nd5 0-0?? (better 21...Nd5 22.Bg7 Rg8 23.Qd5 Rg7+/-) 22.Nde7+- (22.Nde7 Qe7 23.Ne7 Re7 24.Bf6 Bf6 25.Qf6+-; 22.Nf6?! ef6 23.Rfc1 Rc7+/-) 1-0. onur604 (2320) - Gataca2 (2215), Casual Rapid game, 2021.

5.cb5 Qb5 6.e4 Qc6 7.Nc3 Nf6=+.

5.Bb2 b6 6.Qc2 e6 (6...Na6 7.d4=) 7.Nf3+= Nf6 8.d4 d5 9.Nbd2 Nbd7 10.g3 (10.e3 Be7=) 10...Be7 (10...Qb7 11.e4=) 11.Bg2 Ba6 12.0-0 (12.cb6!? Qb6 13.ba5=) 12...Be2=+ 13.Rfe1 Qa6?? (13...Bb5 14.a4 Ba6 15.Ne5=+) 14.cb6?? (14.Re2 Qe2 15.Bf1 Qf1 16.Rf1 ab4 17.ab4 bc5 18.dc5 0-0+–) 14...Rc8?? (better is 14...Bf3 15.Nf3 Qb6 16.ba5 Ra5=+) 15.Re2!+– Qb6 (15...Qe2 16.Bf1) 16.ba5 Qa5 17.Ne5 c5 (17...Ne5 18.de5 Nd7 19.Nb3+–) 18.Nd7 Kd7 19.dc5 Rc5 20.Qd1 Rb5 (20...Rcc8 21.Nb3 Qa6 22.Nd4+–) 21.Nc4 Qa8 22.Ne5 Ke8 23.Rc1 (23.a4 Rc5+–) 23...Qb8 (23...Rc5+–) 24.Qa4 Bd6 25.Nc6 Qb7 26.Nd4 (26...Qd7 27.Nb5+–) 1–0. Margraf,A – Walkhoefer,Wolfgang, corr SOK–90–50, 1989.

5.Bb2 Nf6 6.e3 b6 7.d4 g6 (7...Qb7!?=) 8.Nd2 Bg7 9.Nc4 bc5 10.dc5 (10.Na5?! cb4 11.ab4 Ba6=) 10...Ba6 (10...Qb7 11.ba5 (< 11.Na5 Ra5 12.Bc4 Ra8–/+) 11...Qa7 12.Nf3+=) 11.Na5+/– Bf1 12.Kf1 0-0 13.Nf3 Qc7 (13...d6 14.cd6 ed6 15.Rc1+/–) 14.Nc4 Nd5 15.Bg7 Kg7 16.e4 Nf4 17.g3 Nh5 18.Kg2 Nf6 19.Qd4 Kg8 20.Rhd1 Na6 (20...Ra7 21.a4+–) 21.Ne3 (21.Nb6 Ra7+–) 21...Rae8? (better is 21...Rfd8+–) 22.e5 Nh5 (22...Nd5 23.Nd5 cd5 24.Qd5+–) 23.Qd7 Qb8 (23...Rc8+–) 24.Qc6 Nc7 25.Rd7 Ne6 26.Nd5 Kg7 27.Qb7 Kh6 (27...Rd8 28.Qb8 Rd7 29.Qb6 Rd5 30.Qb7+–) 28.Qb8 Rb8 29.Ne7 f5 (29...Rfd8 30.Rd6+–) 30.c6 Nhg7 31.c7 Nc7 32.Rc7 Rfd8 (32...Ne6 33.Rc6 Nd8 34.Rd6+–) 33.Nc6 (33...Rdc8 34.Rc8 Rc8 35.b5+–) 1–0. Springer,U – Walkhoefer, corr SOK–89–50, 1989.

5.Qb3 Nf6 6.d4 ab4 7.Qb4 Na6 8.Qc3 Nd5 9.Qd2 g6 10.e4 Nf6 11.Bd3 Bg7 12.Ne2 0-0 13.0-0 b6 14.Ba6 Ba6 15.Nbc3 bc5 16.dc5 Qc5 17.Bb2 Rfb8 18.Na4 Qb5 19.Qc2 Qe2 20.Qe2 Be2 21.Rfe1 Bb5 22.Nc3 Bd3 23.f3 Rb2 24.Re3 Bc4 25.e5 Nd5 26.Nd5 Bd5 27.e6 Be6 28.Rd1 d6 0–1. akrycz – arcydziengiel, kurnik, 2013.

5.ba5 Qa5 6.Bb2 Qc5 7.Nc3 d5 8.e3 e5 9.Nf3 Bd6 10.Be2 Nf6 11.0-0 0-0 12.d4 ed4 13.Nd4 Be5 14.Rc1 Qe7 15.h3 Na6 16.Na4 Bd7 17.Nb6 Rad8 18.Nd7 Rd7 19.Nf5 Qe6 20.Be5 Qe5 21.Ba6 Qf5 22.Bd3 Qe6 23.Qc2 g6 24.Rb1 Rfd8 25.a4 Ne4 26.Be4 de4 27.Rfd1 Rd1 28.Rd1 Rd1 29.Qd1 Qd5 30.Qb1 b5 31.a5 Qd8 32.Qa2 Qa8 33.a6 Qa7 34.Qa5 b4 35.Qd8 Kg7 36.Qd4 Qd4 37.ed4 b3 38.a7 b2 39.a8Q b1Q 40.Kh2 Qb5 41.Qd8 Qd5 42.Qc7 Qd4 43.Qc6 h5 44.Kg3 Qd3 45.Kf4 f6 46.Qc7 Kh6 0–1. besi01 – sadok (1730), kurnik, 2013.

5.Bb2 Na6 6.e3 ab4 7.ab4 b6 8.d4 d6 9.b5 cb5 10.Bb5 Kd8 11.cd6 Qd6 12.Nf3 Qb4 13.Nc3 Qb2 14.Rc1 Nc7 15.Bc4 Ra3 16.Nb1 Qb4 17.Nfd2 Ra1 18.0-0 e6 19.Bd3 Ba6 20.Qc2 Bd6 21.Ba6 Ra6 22.g3 Nf6 23.Nc4 Kd7 24.Ne5 Ke8 25.Qc6 Ke7 26.Qc7 Bc7 27.Nc6 Kd6 28.Nb4 Ra1 29.Nc3 Rc1 30.Rc1 Rc8 31.e4 Kd7 32.e5 Ne8 33.Nb5 Ra8 0–1. emeryt85 – darek10, kurnik, 2014.

5.Bb2 Na6 6.e3 d6 7.Ba6 Ra6 8.Nc3 dc5 9.bc5 e6 10.Ne4 f5 11.Nd6 Bd6 12.cd6 Qd7 (12...Qd6?? 13.Bg7 e5 14.Bh8+–) 13.Qh5 Kf8 14.Be5 Rb6 (14...Nf6 15.Qh4 Ne4 16.Nf3+=) 15.Ne2 Rb5 16.f4 c5 17.0-0 b6 18.Nc3 Rb3 19.a4 (19.Rfb1 a4+–) 19...Ba6 20.Rfb1 Rb4 21.Rb4 (21.Na2 Rb1 22.Rb1 A) 22...Qa4?? 23.Qg5 (23.Rb6?! Bc8 24.Rb8 Qd7+–) 23...Nf6 24.Bf6+–; B) 22...Qd8+–) 21...cb4 (21...ab4 22.Nb5 Nf6 23.Bf6 gf6 24.Qh6 Kf7 25.d4=) 22.Nd1 (better is 22.Rc1!? Nf6 23.Bf6 bc3 24.Rc3 gf6 25.Rc7 Qc7 26.dc7+–) 22...Nf6= 23.Bf6 gf6 24.Nf2 Qd6 25.Qh6 Kf7 26.e4? (26.d4!?+=) 26...Qd4 (26...fe4 27.Rc1–+) 27.Qh5 (27.Rc1!? fe4 28.Rc7 Ke8 29.h3–+) 27...Kg7 (better is 27...Ke7!? 28.Rb1 fe4–+) 28.Rc1 (28.Rc1 Rc8 29.Rd1–/+). avinoam – 8591gustaw, kurnik, 2012.

5.Bb2 ab4 6.ab4 Ra1 7.Ba1 (--> 1.b4 c6 2.Bb2 Qb6 3.a3 a5 4.c4 ab4 5.c5 Qc7 6.ab4 Ra1 7.Ba1).

5.Bb2 ab4 6.ab4 Na6 7.e3 b5 8.Nf3 Bb7 (8...d6 9.d4+=) 9.Qb3 h6 (9...d6 10.Nc3 Qd7 11.d4+=) 10.Be2 (10.d4 Nf6+–) 10...Rh7 (10...d6 11.Nc3 e6 12.Ne4 dc5 13.bc5 Nc5 14.Ra8 Ba8 15.Nc5 Bc5 16.Bg7+–) 11.0-0+– g6 (11...d6 12.d4+–) 12.Be5 (12.Rc1 d6+–) 12...d6+= 13.cd6 (13.Bg3 Nf6+=) 13...ed6 14.Bg3 0-0-0? (better 14...Qe7!?+=) 15.Rc1 (better 15.d4+–) 15...Bg7? (better 15...Qb6+–) 16.d4 Kb8 (16...Ne7 17.Nc3 Kd7 18.Nb5 cb5 19.Bb5 Bc6 20.Ra6+–) 17.Bb5! Qb6 (17...cb5 18.Rc7 Pinning (18.Rc7 Deflection)) 18.Ba6 (18.Bd3 Nc7+–) 18...Ba6 19.Qf7 (better 19.Qa2 Bb7 20.Qf7 Bd4 21.Qh7 Ba1 22.Nbd2+–) 19...Rf8 (19...Bd4 20.Bd6! Rd6 21.Qg8 Rd8 22.Qh7 Ba1+–) 20.Bd6 Kc8 21.Qe6 (21.Bf8 Bf8 22.Qf8 Qd8 23.Rc6 Rc7 24.Rc7 Kc7 25.Qc5 Kb7 26.b5 Bb5 27.Qb5 Qb6 28.Qd7 Qc7 29.Ra7 Ka7 30.Qc7 Ka6 31.Qc6 Ka5 32.Nc3 Kb4 33.Nd2 Ka3 34.Qb5 Ne7 35.Nc4) 21...Kb7 22.Qd7 Ka8 23.Rc6 Bd4 24.Ra6 Qa6 25.Ra6 (25.Ra6 Ba7 26.Ra7) 1–0. DEFFM – GuestYNPB, freechess.org, 2018.

5.Bb2 ab4 6.e3 b5 (6...ba3 7.Na3 Ra5 8.d4+=) 7.cb6 (7.ab4 Ra1 8.Ba1 d6=) 7...Qb6+= 8.Qb3 e6 9.d4 (9.Nf3 Nf6+=) 9...Qb7 (9...Ba6 10.Nf3–/+) 10.Nd2? (better is 10.a4+=) 10...ba3–+ (10...ba3 11.Bc1 Qb3 12.Nb3 Bb4 13.Bd2 Be7–+) 0–1. gtate (1915) – kinglouie (1895), net–chess.com, 2004.

5.Bb2 b5 6.d4 (6.Nf3 ab4 7.ab4 Ra1 8.Ba1 Na6=) 6...Nf6 7.Nc3 d5 8.Nf3 Bf5 9.e3 e6 (9...Nbd7 10.Bd3 Bd3 11.Qd3=) 10.Bd3 (10.Nh4 Bg4 11.f3 Bh5=) 10...Bg6 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.0-0 (11.Ne5 Nbd7 12.Ng6 hg6+=) 11...Be7 12.Ne5 0-0 13.Ne2 (13.Ng6 hg6 14.Qe2 Nbd7+=) 13...Nbd7 14.Nf4 Ne5 (14...Bd3 15.Qd3 Ne5 16.de5=) 15.de5+= Nd7 16.Ng6 hg6 17.f4 Rfd8 18.Qg4 Nf8 19.Bd4 Qd7 20.h4 Qe8 21.h5 gh5 22.Qh5 f5 23.Qh3 g6 (23...Ra7 24.Kf2 ab4 25.ab4+=) 24.g4+/– ab4 25.ab4 Ra1 (25...Ra4 26.gf5 gf5 27.Kf2 Ra1 28.Ra1+/–) 26.Ra1 Ra8 27.Rd1 (27.Ra8 Qa8 28.gf5 Qa3+/–) 27...Qf7+= 28.Kf2 Qh7 29.Qh7 Kh7 30.Rh1 Kg7 31.Ra1 Ra1 32.Ba1 ½–½. Krivoshapko,Alexander – Tipikin,Ivan, 2013.

5.Bb2 d5 6.e3 e5 7.Nf3 Nd7 8.Be2 ab4 9.ab4 Ra1 10.Ba1 Ngf6 11.0-0 Be7 (11...e4 12.Nd4=) 12.Nh4 (12.Qc2 0-0=) 12...Nf8 (12...b6 13.Nf5 Bf8 14.f4=) 13.f4 ef4 14.ef4 Ng6 15.Ng6 fg6 16.Be5 Qd8 17.d4 0-0 18.Nd2 Nd7 19.Qb3 White intends b5 19...Ne5 20.fe5 Rf1 21.Bf1 b6 (21...Be6 22.Ne4+=) 22.b5 (22.Ne4!+=) 22...bc5= 23.bc6 cd4 24.Qb5 Be6 (better 24...Bg5 25.Nf3 Be3 26.Kh1 Kf7+=) 25.c7!+- Qc8 (25...Qc7 26.Qe8 Deflection) 26.Nf3 Qd7? (better 26...Kf7 27.Qb6 Qa8+-) 27.Qb6+- d3 28.Bd3 Qa4 1-0. onur604 (2320) - Gataca2 (2215), Casual Rapid game, 2021.

5.Bb2 d6 6.e3 ab4 7.ab4 Ra1 8.Ba1 Na6 9.Ba6 ba6 10.Nf3 e5 11.d4 e4 12.Nfd2 d5 13.f3 f5 14.0-0 Nf6 15.Nc3 Be7 16.Qb3 g6 (16...0-0 17.Qa3=) 17.fe4 fe4 18.Nde4 (18.Nce4!? Ng4 19.Ng3+=) 18...de4= 19.d5 cd5?? (better 19...Rf8 20.d6 Bd6 21.cd6 Qd6=) 20.Rf6!+– Bf6 21.Nd5 Theme: Double Attack 21...Qf7 (better 21...Qc6 22.Nf6 Kf8+–) 22.Nf6 Kf8 23.Qc3 Rg8 (23...h5+–) 24.Qd4 Be6 (24...Qe7 25.Nh7!! Ke8 26.Nf6 Kf7 27.Ng8 Kg8 28.Qh8 Kf7 29.Qc8 Qe6 30.Qb7 Ke8+–) 25.Qd8 Kg7 26.Ng4 (26.Ng4 Qf6 27.Qf6; 26.Qg8?! Qg8 27.Ng8 Kg8+–) 1–0. GuestDTRL – Bersal, freechess.org, 2020.

5.Bb2 d6 6.e3 ab4 7.ab4 Ra1 8.Ba1 dc5 9.bc5 Qa5 10.Nc3 Qc5 11.Na4 Qa5 12.Bc3 Qc7 13.Qa1 f6 14.Nf3 Nd7 15.Bc4 Nh6 16.Be6 b5 17.Bd7 Bd7 (worse is 17...Kd7 18.Ba5 Qb8 19.Qd4 Ke6 20.Nb6=) 18.Nc5 e6 19.Bb4 Nf7 20.0-0 Bd6 21.d4 0-0 22.Qa2 Bc5 23.Bc5 Rb8 24.Ra1 Bc8 25.Qa3 Bb7 26.Qb3 Nd8 27.Nd2 Ra8 28.Ra8 Ba8 29.Qa2 Bb7 30.Qa7 Qc8 31.Bb6 Nf7 32.Qa2 Nd6 (32...e5 33.Qb3+=) 33.e4 (33.Bc5 Qd7=) 33...Kf7 (better is 33...c5!? 34.dc5 Ne4 35.Ne4 Be4–/+) 34.e5 Nc4 35.Nc4 bc4 36.Qc4 Qd7 (36...fe5 37.de5 Qd7 38.Qf4 Ke8 39.h3=) 37.f4 Qd5 38.Qd5 cd5 ½–½. Zahn,Richard (2055) – Vandenbergen,Nicolas (1740), Niederrhein–ch, 2003.

5.Bb2 d6 6.e3 dc5 7.bc5 e6 8.Nf3 Nf6 9.Qc2 Na6 10.d4 b6 11.cb6 Qb6 12.Nc3 Rb8 13.Bc1 Qb3 14.Qb3 Rb3 15.Bd2 Bd6 16.Be2 0-0 17.0-0 Ra3 18.e4 Ra1 19.Ra1 Bb4 20.e5 Nd7 21.Ne4 c5 22.Ba6 Ba6 23.dc5 Bb7 24.Bb4 ab4 25.Nd6 Bf3 26.gf3 Nc5 27.Rb1 b3 28.f4 Rb8 29.Kf1 Nd3 30.Ke2 Nf4 31.Ke3 Nd5 32.Kd4 Kf8 33.Kc4 b2 34.Kd3 Ke7 35.Kc2 f6 36.Nc4 Rc8 37.Kd3 fe5 38.Ne5 Rc3 39.Kd2 Rh3 40.Rb2 Rh2 41.Ke1 Kd6 42.Nd3 g5 43.Rb7 h5 44.Rg7 g4 45.Rg5 Nc3 46.Kd2 Ne4 47.Ke3 Ng5 48.Nf4 Nf7 49.Ng6 e5 50.Nf8 h4 51.Nh7 Rh3 52.Ke2 Rf3 53.Nf8 1–0. avinoam (1640) – mikolajm1 (1620), kurnik, 2014.

5.Bb2 e5 6.Nc3 b6 7.d4 d6 8.Nf3 Nd7 9.cd6 Bd6 10.b5 Ngf6= 11.bc6 Qc6 12.e3 Ba6 13.Ba6 Ra6 14.Qe2 Ra8 15.Nb5 e4 16.Rc1 Qd5 17.Nd6 Qd6= 18.Ne5 0-0 19.Rc6 Qd5 20.Qc2 Ne5 21.de5 Nd7 22.0-0 Ne5 23.Be5 Qe5 24.a4 Rab8 25.Rb1 Rfd8 26.Rcb6?? Rb6=+ 27.Rb6 Qc5!? Schuhler – Poehlmann, corr, 1975.

5.Bb2 e5 6.Nc3 Nf6 7.e3 (7.Na4 ab4 8.Nb6 Ra3 9.Ba3 ba3=+) 7...ab4 8.ab4 Ra1 9.Qa1 (9.Ba1 d6 10.d4 ed4 11.ed4 Be7=+) 9...Na6 (9...d6 10.Nf3=) 10.Ba6= ba6 11.Nf3 d6 12.Na4 Be7 (12...Nd7 13.0-0=) 13.0-0 (13.cd6 Qd6 14.Nc5 e4=) 13...0-0 (13...e4!? 14.Nd4 dc5 15.Nc5 a5=+) 14.cd6+= Bd6 (14...Qd6!? 15.Ne5 Nd5+=) 15.Be5+– Be5 16.Qe5 Qe5 17.Ne5 Bb7? (better 17...Nd5!?+–) 18.Nc5+– Rb8 19.Ned7 (19.Ra1!? Nd5 20.Ned7 Rd8 21.Nb7 Rd7 22.Ra6 Kf8+–) 19...Nd7 20.Nd7 Rd8 21.Nc5 Bc8 (21...Rb8 22.Ra1+–) 22.d4 (22.d3 Bf5+–) 22...f5 (22...Be6 23.h4+– (23.Na6?! Bc4+=)) 23.Ra1 f4 (23...Rd5 24.h3+–) 24.Na6 fe3 (24...Ba6 25.Ra6 Rb8 26.Rc6 Rb4 27.Kf1+–) 25.fe3 Ba6 (25...Re8 26.Kf2+–) 26.Ra6 Rb8 27.Rc6 Rb4 28.Kf2 Kf7 29.Kf3 h6 (29...h5 30.Rc5 g6 31.Rc7 Kf6 32.Rc6 Kf5 33.h4+–) 30.d5 Ke7 (30...Rb3 31.h4+–) 31.e4 Rb1 (31...Rb3 32.Kf4+–) 32.Kf4 (32.e5 Re1 33.Kf4 Rd1 34.Rc7 Kd8+–) 32…Rf1 1–0. GuestRXPW – GuestSDVJ, freechess.org, 2016.

5.Bb2 e5 6.d4 ab4 7.ab4 Ra1 8.Ba1 d6 +=.

5.Bb2 e5 6.e3 Nf6 7.Nc3 (7.d4 ed4 8.Bd4 ab4 9.ab4 Ra1 10.Ba1 d6=) 7...Be7 (7...ab4 8.ab4 Ra1 9.Ba1=+) 8.Nf3 (8.Na4 0-0=) 8...0-0 (8...d6 9.Bc4=+) 9.d3 (9.Na4 e4 10.Nb6 Ra7=) 9...Na6 (9...d6 10.cd6 Bd6 11.b5=+) 10.Na4= ab4 (10...d6 11.Nb6 Ra7 12.cd6 Bd6 13.Nc4=) 11.Be5 (11.Nb6 Rb8 12.Nc8 Rbc8 13.ab4 d6=) 11...Qa5 12.ab4 Nb4 13.Bc3 (better 13.Ke2!? Ra6 14.Qb3=) 13...Nfd5–/+ 14.Bb4 (14.Bd2 Bc5 15.e4 Qa7–+) 14...Qb4 15.Nd2 Bc5 (15...d6 16.d4–/+) 16.Nc5 Ra1 17.Qa1 Qc5 18.Be2 (18.d4 Qb4–/+) 18...d6 19.0-0 (19.Qb2 Qc3 20.Qc3 Nc3–/+) 19...Ne3!–+ 20.Ne4 (20.fe3 Qe3 Double attack) 20...Qc2 21.Re1 (21.fe3 Qe2 22.Qd4 c5 23.Qd6 Qe3 24.Nf2 b5–+) 21...Nf5 22.Bf1 (22.Qa3 d5 23.Bd1 Qb1–+) 22...Be6 (22...Qb3 23.Be2–+) 23.Rb1 (23.Rc1 Qa2–+) 23...b5 24.Rc1 Qb3 (better 24...Qa4!?–+) 25.Rc6–/+ Bd5 (better 25...Qb4!?–/+) 26.Nd6= Bc6 (better 26...Nd6 27.Rd6 Be6=) 27.Nf5+– Ra8?? (better 27...f6 28.Ne7 Kh8 29.Nc6 Qe6+–) 28.Qg7 1–0. GuestSPHW – GuestNFHM, freechess.org, 2016.

5.Bb2 e5 6.Nf3 f6 (6...d6 7.e4=) 7.e4 (7.d4 ab4 8.e4 ed4 9.ab4 Ra1 10.Ba1 d6=) 7...ab4 8.ab4 Ra1 9.Ba1 b6 10.Ne5 fe5 11.Qh5 Kd8 12.Be5 (12.Qg5 Ne7 13.Be5 Qb7=) 12...Qa7 13.Qf7 Ne7 14.Bc4 bc5 (14...Ng6 15.Bg7 Bg7 16.Qg7=) 15.Bg7 Bg7 16.Qg7 Re8 (16...Ng6 17.Bg8 cb4 18.Bh7=) 17.Bf7+= d6 (17...cb4!? 18.Be8 Qa2+=) 18.Be8+– Ke8 19.Qh8 Kd7 20.bc5 Qc5 21.0-0 h5 22.d4 Qg5 23.Nc3 Kc7 (23...Qd2 24.d5 cd5 25.ed5 Nd5 26.Ne4+–) 24.f4 (24.Ra1 Na6+–) 24...Qg6 (24...Qa5 25.Ne2 Qd2 26.Ng3+–) 25.d5 Bh3 (25...Kd7 26.Rb1 cd5 27.Rb8 de4 28.Ra8+–) 26.Rf2 cd5 (26...Bd7+–) 27.Nb5 (27.ed5?! Ng8 28.Nb5 Kd7+–; 27.Nd5?! Nd5 28.ed5 Qd3+–) 27...Kb7 (27...Kd7 28.Qb8 de4 29.Qc7 Ke6 30.Qd6 Kf7 31.Qg6 Kg6 32.gh3 e3+–) 28.Qd8 Nec6 (28...Nbc6 29.Nd6 Qd6 30.Qd6 Bg2 31.Rg2 de4 32.f5+–) 29.Qc7 Ka6 30.Nd6 (30.Nd6 Qd6 31.Qd6+–) 1–0. onur604 (2320) – Buschpav08 (2230), lichess.org, 2020.

5.Bb2 Nf6 6.e3 d6 7.d4 dc5 8.dc5 e6 (8...ab4 9.ab4 Ra1 10.Ba1=+) 9.Nf3 Be7 10.Bc4 (10.Be5 Qd8 11.Nc3 Nbd7=) 10...0-0 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.0-0 b5 (11...ab4 12.ab4 Ra1 13.Ba1=) 12.cb6 Qb6 13.Bd4 Qc7 14.b5 (14.Nbd2 Nbd7=) 14...cb5= 15.Bb5 Rd8 (15...Bd7 16.Nc3=) 16.a4 Bb7 17.Nbd2 Nc6 18.Rc1 Qd6? (better 18...Nd7=) 19.Bc5+– Qd5?? (better 19...Qc5 20.Rc5 Bc5+–) 20.Bc6 Bc6 21.Be7 Rd7 (21...Rdc8 22.Rc4+–) 22.Bf6 (better 22.Rc5!? Re7 23.Rd5 ed5+–) 22...gf6 23.Qc2 Rc8 24.e4 Qh5 (24...Qd6 25.Qb2 e5 26.Nc4+–) 25.Qb2 e5 (25...Kg7 26.Rc4 Bb7 27.Rc8 Bc8 28.Qb6+–) 26.Qb6 Rb7 27.Qa5 Rcc7 (27...Rbb8+–) 28.Rc6! Rc6 29.Qa8 (29.Qa8 Kg7 30.Qb7+–) 1–0. DEFFM – beatfunk, freechess.org, 2019.

5.Bb2 Nf6 6.Nf3 b6 7.e3 Ba6 8.cb6 Qb6 9.Bd4 Qb7 10.ba5 Bf1 11.Kf1 Ra5 12.Nc3 c5 (12...Qa6 13.Qe2=) 13.Be5 Nc6 14.Rb1 Qa6 15.Kg1 d6 (15...Ra3? 16.Nb5 Nd5 17.e4+–) 16.Bf6 gf6 17.a4 Nb4 18.Nb5 Kd7 19.Ra1 (19.Nc3!?+=) 19...Bg7 20.Nc3 f5 21.Qb3 e6 22.h4 Rb8 23.Rh3 Bf6 24.Ng5 Bg5 (better 24...h6!? 25.Nf3 Qd3–/+) 25.hg5= Rg8 26.Rh7 Ke7 27.f4 Qb7 28.Qd1 d5 (better 28...Qd7!?+–) 29.Qh5+– Threatening mate... how? 29...Ke8?? (better 29...Rf8 30.g6 Qc8+–) 30.g6 fg6 31.Qh4 (31.Rb7?! gh5 32.Nb5 Kf8+–) 31...Rg7 32.Rh8 Kf7 33.Qd8 Qe7 34.Qa5 g5 (34...Rg8 35.Rh2+–) 35.Rc8 (35.Rc8 Kg6 36.Rc5+–) 1–0. onur604 (2320) – MIRZA_LP (1975), lichess.org, 2020.

6.cb6 Qb6 7.ba5?? Qb2 0–1. Panczyk – Duske, corr DDR 1975.

6.d4 ab4 7.ab4 Ra1 8.Ba1 =.

6.d4 bc5 7.dc5 ab4 8.ab4 Ra1 9.Ba1 Qa7 10.Nc3 (10.Bc3 d6 11.cd6 ed6+=) 10...Nf6 (10...Na6 11.Qa4+=) 11.Nf3 Qc7 (11...Na6 12.Qa4 Qb7 13.e4 Qb4 14.Ba6 Qa4 15.Na4 Ba6 16.Bf6 gf6 17.Kd2+=) 12.e3 d6 13.Bc4 (13.cd6 ed6 14.b5 d5+=) 13...d5 14.Bd3 e5 15.Nd2 e4 16.Be2 Be7 17.0-0 0-0 18.Na4 Nbd7 19.Nb3 Bb7 20.Nd4 Ra8 21.Nf5 Bf8 22.Bd4 Ba6 23.Nb6 Nb6 24.cb6 Qb7 (24...Qc8 25.Nh6 gh6 26.Bf6 Be2 27.Qe2=) 25.Bc5 Be2 26.Qe2 Nd7 27.Qc2 (27.Bf8 Nf8 28.Rc1 Ne6=) 27...Nb6 (better is 27...Nc5 28.bc5 Ra5+=) 28.Qc3?? (28.Bf8 Kf8 29.Qc3 f6 30.Qc5 Kg8 31.Ne7 Kf7 32.Nc6 Qc7+=) 28...f6 (better is 28...Na4 29.Qe5 Nc5 30.bc5 Qa7–+) 29.Bf8= Rf8 30.Qc5 Rd8 31.Ra1 (31.Ne7 Kf7 32.Nc6 Ra8+=) 31...Qc7 (31...Rd7!?=) 32.b5 Qd7?? (32...Qe5!? 33.Nd4 Nc4 34.Qc6 Rf8+/–) 33.Ne7 (better is 33.Qb6 Rf8 34.g4+–) 33...Kf7+/– 34.Nc6 (34.Qc6?! Nc4 35.Qd7 Rd7+=) 34...Nc4?? (better is 34...Ra8 35.Ra8 Na8+–) 35.Ra7 Qa7 (35...Kg6 36.Rd7 Rd7 37.Ne7 Kf7 38.Nd5+–) 36.Na7 (better is 36.Qa7 Kg6 37.Nd8+–) 36...Rd7 (36...Kg6 37.Nc8 Ne5 38.b6+–) 37.b6 Nb6 (37...Kg6 38.Qb5 Nb6 39.Qb6+–) 38.Qb6 Kg6 39.g3 (better is 39.Qb8 Kf7 40.Nc6 g6+–) 39...h5 40.h4 1–0. elektrooon – happytiger, kurnik, 2013.

6.e3 ab4 7.ab4 Ra1 8.Ba1=.

6.e3 e6 7.cb6 Qb6 8.Bd4 Qc7 9.b5 c5 10.Qc2 Nf6 (10...d5 11.Bb2=) 11.Bf6+= gf6 12.Nf3 d5 13.Nc3 Nd7 14.Be2 f5 15.Qb2 (15.0-0 Rg8+=) 15...Rg8= 16.0-0 Bb7 17.b6 Qb6?? (better 17...Qd8=) 18.Qb6+- Nb6 19.Rfb1 1-0. DEFFM – GuestLVSW, freechess.org, 2021.

6.Nf3 ab4!? 7.ab4 Ra1 8.Ba1 Na6=.

6.Nf3 ab4 7.ab4 Ra1 8.Ba1 bc5 9.bc5 Qa5 10.Bd4 Na6 11.Qc2 e6 Will c5 fall? 12.Qc3 (12.Ng5!?=) 12...Qc3=+ 13.dc3 (13.Nc3 Nc5 14.e3 f6-/+) 13...Nc5-/+ 14.Ne5 (14.e3 f6-/+) 14...Nf6 (14...f6 15.Bc5 Bc5 16.Nd3-/+) 15.Nd3 (15.e3 Nb3 16.Ba7 Bb7-/+) 15...Nd3 16.ed3 Bb7 17.f3 Be7 18.Nd2 c5 19.Be3 (19.Bf2!?-/+) 19...Nd5-+ 20.Kf2 (20.Bf2 Nc3 21.d4 cd4 22.Bd4 Bh4 23.g3 Bf6 24.Bf6 gf6-+) 20...Nc3 21.Ne4 (21.Be2 d5-+) 21...Ne4 (better 21...Nd1!? 22.Ke2 Ne3 23.Ke3-+) 22.fe4 0-0 23.Be2 d5 (23...f5!? 24.ef5 Bh4 25.Kg1 Rf5 26.Bf1-+) 24.ed5 ed5 25.Rb1 Bc6 (better 25...Ba6!?-+) 26.Rc1-/+ d4 (26...Rc8 27.Bc5 Bb5 28.d4 Be2 29.Ke2-/+) 27.Bd4 Bg2 (27...cd4 28.Rc6 Rb8 29.Bf3-/+) 28.Bg7 (28.Bc5!? Bc5 29.Rc5=+) 28...Kg7-/+ 29.Kg2 f5 30.Kf3 Ra8 31.Rc4 Ra2 (31...Bd6 32.h3-/+) 32.Rf4 Kg6 33.h3 (33.Rc4 Ra3-/+) 33...Rc2 (33...Bf6!? 34.Rc4 Bd4 35.Rc1-+) 34.Rc4 Rc4 35.dc4 Bg5 36.Kg3 Kf6 37.Kf3 Ke5 38.Bf1 Kd4 39.Be2 h6 40.Bf1 Kc3 41.Be2 Kd2 42.Bf1 Ke1 (42...h5 43.h4 Bh4 44.Kf4-/+) 43.Be2 Kd2 44.Bf1 Kc3 45.Be2 Kd4 46.Bf1 ½-½. glorij1 (1800) - Huskygaze (1935), Rated Classical tournament, lichess.org, 2014.

6.Nf3 d6 7.cd6+= ed6 8.e4 (8.b5 Bb7+=) 8...Nd7 (8...ab4 9.ab4 Ra1 10.Ba1+=) 9.d4 (9.Nc3 Ngf6+=) 9...Ngf6 (9...ab4 10.Bd3=) 10.b5 c5 11.e5 de5 (11...Ne4 12.Bd3 d5 13.Nbd2 Nd2 14.Qd2+= (worse 14.Kd2 c4 15.Qc2 g6=+)) 12.de5 Ng4 13.Qa4 (13.Nc3 Nde5 14.Nd5 Qd6 15.Ne5 Ne5 16.Nb6 Qb6 17.Be5 Ra7+=) 13...Nde5+= 14.Ne5 Ne5 15.Qe4 Bb7? (better 15...Bd6 16.Be5 Be5+=) 16.Qe5 (16.Be5 Qe7 (16...Be4?? 17.Bc7 Kd7 18.Bb6+–) 17.Qe3 0-0-0+–) 16...Qe5 17.Be5 0-0-0 18.Nd2 Re8?? (better 18...Bd6 19.Bc3 Rhe8 20.Kd1 Kc7+–) 19.Nc4 Bd5 (19...Re6 20.0-0-0+–) 20.Nb6 Kb7 21.Nd5 Re5 22.Ne3 f5 (22...Be7 23.0-0-0+–) 23.0-0-0 f4 (23...g6 24.Nc4 Re4 25.Rd7 Kc8 26.Nb6 Kb8 27.Bc4+–) 24.Nc4 (24.Nc4 Re7 25.g3+–) 1–0. DEFFM – GuestXWMS, freechess.org, 2020.

5.Bb2 ab4 6.ab4 Ra1 7.Ba1 d5 8.e3 f6 9.Be2 e5 10.Nf3 Nh6 11.Qc2 Be7 12.h3 0-0 13.0-0 Bf5 14.Qa4 Nd7 15.Nc3 Qa8 16.Qb3 Be6 17.e4 b6 18.ed5 cd5 19.Bb2 bc5 20.bc5 Nc5 21.Qc2 d4 22.Ra1 Qb7 23.Nd1 e4 24.Nd4 Bf7 25.Bc4 Nd3 26.Bf7 Nf7 27.Nf5 Bc5 28.Nde3 Rc8 29.Qb1 Qb2 30.Qb2 Nb2 31.Nd5 Rb8 32.Rb1 Nd6 33.Nfe7 Kf7 34.Nc6 Rb3 0–1. emeryt85 – malchik54 (1630), kurnik, 2014.

5.Bb2 Nf6 6.Nc3 d5 7.d4 Bf5 (7...ab4 8.ab4 Ra1 9.Ba1=) 8.Nf3 Nbd7 (8...ab4 9.ab4 Ra1 10.Qa1=) 9.e3 e6 10.Be2 (10.b5 Be7+=) 10...Be7 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.0-0 Qc7 (11...ab4 12.ab4 Ra1 13.Ba1+=) 12.Nh4 Bg6 (12...Be4 13.b5+= (13.Ne4?! de4 14.g3 Nd5=)) 13.b5+/– 0-0 14.Ng6 hg6 (14...fg6 15.Rb1+/–) 15.b6 Qb8 16.Qc2 e5 17.Bc1 Nh7 18.Bd2 Bf6 19.Qa4 Re8 (19...Qe8 20.Rfe1+/–) 20.Bg4 (20.Nd5!? ed4 21.Rac1 Qe5+/–) 20...Nhf8 21.Rae1 (21.Nd5 cd5 22.Bd7 Nd7 23.Qd7 ed4 24.Rae1 de3 25.Re3+=) 21...Ne6 (better is 21...Qc8!?+/–) 22.Nd5!+– Ndc5? 23.Nf6 gf6 24.dc5 Nc5 25.Qc2 Ne6 26.Be6 Re6 27.e4 (27...Rd6 28.f4+–) 1–0. HFlew – Mayor, playchess.de, 2003.

5.Bb2 Nf6 6.Nc3 d6 7.d4 ab4 8.ab4 Ra1 9.Qa1 (9.Ba1 g6=) 9...dc5 10.dc5 Na6 11.Qa3 Qd4 12.Na2 Qe4 (12...Qg4 13.Nf3 Nd5 14.Qb3=+) 13.Nf3= Qb1 (13...Be6 14.Nd2 Qd5 15.Nc3=) 14.Nc1 Nd5 (14...Ne4 15.e3 Qc2 16.Be2+–) 15.Nd2 Qc2 16.Nd3 f5 17.e3 e5 18.Be5 Nab4 19.Nb4 Qc5 20.Qa8 Nb6 21.Qa1 Qb4 22.Bg7 Rg8 23.Bf8 Rf8 24.Qe5 (24.Qg7 Rf7 25.Qg8 Qf8 26.Qf8 Rf8=) 24...Kf7 25.Qc7 Kg8 26.Be2 Qb2 27.Qg3 Qg7 28.0-0 Qg3 29.hg3 Kg7 30.Rb1 (30.Ra1 Rd8 31.Nb3 Kf6=) 30...Na4 31.Bf3 Rd8 32.Nc4 Nc3 33.Rb6 Nb5 34.Na5 Nd6 35.Nb3 Re8 36.Be2 (36.Rb4 Re5=) 36...Kf6 37.Bd3 Re5 38.Nd4 Ra5 39.Rb2 (39.g4 fg4 40.Bh7 Ra2=+) 39...Ra1 40.Kh2 h6 41.Bc2 (41.Rc2 Be6=+) 41...Nc4 42.Rb4 Nd2 43.Bd3 Nf1 44.Bf1 Rf1 45.Rb2 Rd1 46.Nb3 Rd5 47.Nd4 Ke5 48.Kg1 c5 49.Nb5 c4 (49...Rd1 50.Kh2=+) 50.Kf1= Rd3 51.Nd4 c3 52.Rb5 Kd6 53.Rb6 (53.Nf5?? Bf5 54.Rb6 Kd5 55.Rb5 Kc6 56.Rf5 c2–+) 53...Kd5 54.Ke1 (54.Rh6 Rd4 55.Ke2 Rd2 56.Ke1 Ra2–+) 54...h5 55.Rb5 (55.Rb4 Kc5 56.Ra4 Bd7=+) 55...Kc4 56.Rb6 (56.Ra5!?=+) 56...Rd2–/+ 57.Rd6 Ra2 58.Rd8 Ra8 59.Nc2 b5 60.Kd1 Bb7 61.Rd4 Kc5 62.Rd7 Bg2 63.Rc7 Bc6 64.Nd4 Ra6 65.Nc6?? (better 65.Kc2 b4 66.Rc8–/+) 65...Rc6–+ 66.Ra7 (66.Rf7 b4 67.Rf5 Kc4 68.Rf7–+ (68.Rh5?? Rd6 69.Ke2 b3–+)) 66...Rd6 67.Kc2 (67.Ke1 b4 68.Rc7 Rc6–+) 67...Kb4 68.Rf7 (68.Kc1–+) 68...Rd2 69.Kc1 Rf2 0–1. Fournier,Frederic (2100) – COMP TaoGizmo (2505), Active, 2004.

4.b5 d5 5.e3 (5.cd5 Qb5 6.Nc3 Qa5=) 5...e6 6.a4 a5 7.Bb2 Qd6 (7...Nd7 8.Nf3=) 8.Nf3+= f6 9.Be2 Nd7 10.0-0 Nb6 11.Na3 (11.cd5 Nd5 12.Nc3 e5+–) 11...Bd7 (11...e5 12.cd5 e4 13.Ne1 Qd5 14.Qc2+=) 12.d4+– Nh6 (12...cd4!? 13.Bd4 Nc4 14.Bc4 dc4 15.Nc4 Qb4+–) 13.dc5+– Qc5 14.Ne5?? (better 14.Bd4 Qc7 15.Bb6 Qb6 16.cd5+–) 14...fe5–+ 15.Be5 Nf7 (15...Nf5 16.Bd4 Qc7 17.c5 Bc5 18.Rc1–/+) 16.Bh5 (better 16.Bd4 Qc7 17.c5=+) 16...dc4?? (better 16...Qb4–/+) 17.Bf7 Kf7 18.Qf3 (better 18.Bd4 Qd5 19.Bb6 Ba3 20.Ra3+–) 18...Ke8–/+ 19.Qg3? (19.Bd4!? Qc7 20.Bb6 Qb6 21.Nc4–/+) 19...Nd5 Black prepares c3 (better 19...Na4 20.Bg7 Rg8 21.Bf8 Rf8–+ (21...Rg3?! 22.Bc5 Rg5 23.Bd4=+)) 20.Rfc1 c3 21.e4 Nb4 (better 21...Nf6 22.Rc3 Ne4 23.Rc5 Ng3–+) 22.Rc3= Qe7 (22...Qb6 23.Rd1 Rc8 24.Bc7+–) 23.Nc4 Qf7 24.Bd6 (24.Nb6 Rd8+–) 24…Qf6 (24...Qf6 25.Rd1 Qg6 26.Bf8 Rf8+–). GuestNTBM – GuestCSKB, freechess.org, 2017.

4.bc5 Qc5 5.e3 e5 (5...Nf6 6.d4 Qc7 7.Nc3+=) 6.d4+– Qd6 (6...ed4 7.ed4 Qa5 8.Bd2+–) 7.Nc3 a6? (better 7...ed4!? 8.Nb5 Qb6 9.ed4 a6+–) 8.c5+– Qe7 (8...Qc6 9.Nf3 d6 10.Bc4+– (10.de5?! de5 11.Bb2 Nd7+–)) 9.Nd5 Qd8 10.Nb6 Ra7 11.Nf3 e4 12.Ne5 (12.Ng5 d5 13.Bb2 Be7 14.Nc8 Qc8+–) 12...d6 13.Qa4 Ke7?? (13...Bd7 14.Ned7 Nd7+–) 14.cd6 Kd6 15.Nf7 (15.Nf7 Ke7 16.Nd8 Kd8 17.d5+–) 1–0. GuestJHFD – GuestHBN, freechess.org, 2019.

5.a4 ab5 6.cb5 d5 7.Bb2 d4 8.e3 e5 9.ed4 ed4 10.Bc4 Be6 11.d3 Bc4 12.dc4 Qe6 13.Ne2 Qc4 14.0-0 Nd7 15.Re1 Be7 16.Nd2 Qd5 17.Nf4 Qg5 18.g3 Ngf6 19.Nc4 Kf8 20.h4 Qf5 21.Ba3 b6 22.Re7 Ke7 23.Qd4 Kd8 24.Qd6 Ne4 25.Qd3 Kc7 26.Bb2 f6 27.Nd5 Kb7 28.Qe4 Qe4 29.Nd6 Ka7 30.Ne4 Rae8 31.Nd6 Re6 32.Nc4 Rhe8 33.a5 Re1 34.Kg2 Ra1 35.ab6 Kb7 36.Nd6 Kb8 37.Ne8 Rb1 38.Bc3 Rb5 39.Ng7 Nb6 40.Nb6 Rb6 41.Nf5 Kc7 42.Ne7 Kd7 43.Nd5 Rd6 44.Nf6 Ke6 45.Ne4 Rc6 46.Ng5 Kd5 47.Nh7 Kc4 48.Be5 Kd5 49.f4 c4 50.Nf6 Ke6 51.Ne4 Kf5 52.Kf3 Ke6 53.g4 Kd5 54.h5 Ra6 55.g5 Ra3 56.Nc3 Ke6 57.Ke4 Ra1 58.h6 Re1 59.Kd4 Kf5 60.h7 Rh1 1–0. kaasparov – mdmarek, kurnik, 2014.

5.a4 ab5 6.cb5 d5 7.Bb2 Nf6 8.Nf3 d4 9.g3 (9.e3!?+=) 9...Nbd7+= 10.Bg2 e5 11.d3 Bd6 12.0-0 0-0 13.Qd2 h6 14.Na3 Qd8 15.Nc4 Qe7 16.b6 Nb8 17.Nh4 Be6?? (better is 17...Rd8=) 18.Nd6+– Qd6 19.Bb7 Nc6 20.Ba8 Ra8 21.Rfb1 (21.a5 Ra6+–) 21...Nd5 22.Bc1 Ndb4 23.f4 Qb8 24.fe5 Qb6 25.Qf4 Qc7 26.Nf3 Bd5 (26...Nc2 27.Bd2=) 27.Bd2 (27.Rb2+/–) 27...Qe7? (better is 27...Nc2=) 28.Bb4+– Nb4 29.a5 (better is 29.Nd4 cd4 30.Qd4+–) 29...Nc2+= 30.Ra2?? (30.e4!? de3 31.Ra4+=) 30...Ne3?? (better is 30...Ba2 31.Qe4 Re8 32.Rb5–+) 31.a6?? (better is 31.Rab2 Ra5 32.Qh4 Qh4 33.Nh4+=) 31...Ba2–+ 32.Rb7 Qe6 33.Qe4 (33.a7 Qc8 34.Rb8 Rb8 35.ab8R Qb8 36.Nd4 Qb1 37.Kf2 Nd1 38.Kf3 Bd5 39.Kg4 cd4 40.Kh5–+) 33...Bd5 34.Qh4 Ra6 (34...Bb7 35.g4 Bf3 36.h3–+) 35.Qd8 (35.Rb8 Kh7 36.Nd2–+) 35...Kh7 36.Rb1 Bf3 37.ef3 Qe5 (37...Qa2 38.Qg8 Kg8 39.Rb8 Kh7 40.Rh8 Kh8 41.e6 Qg2) 38.Kf2 (38.Qh4 Ra3–+) 38...Nc2 (38...Ra2 39.Kg1 Ng4 40.Qc7 Qe3 41.Kh1 Rh2) 39.Qc8 (39.Kf1 Qe6 40.Kf2 Qe3 41.Kg2 Qe2 42.Kh3 Ne3 43.Qg8 Kg8 44.Rb8 Kh7 45.Rh8 Kh8 46.g4 Qf3 47.Kh4 Qg4) 39...Qe3 (39...Ra2 40.Qa8 Na3 41.Kg1 Qe3 42.Kh1 Qd2 43.Qh8 Kh8 44.Rb8 Kh7 45.Rh8 Kh8 46.h3 Qe1) 40.Kg2 Re6 41.Rf1 (41.Qb7 Qe2 42.Kh3–+) 41...Qd3 (41...Qe2 42.Kg1 Ne3 43.Qh8 Kh8 44.Rf2 Qe1 45.Rf1 Qf1) 42.Rf2–+ Ne3 43.Kh3 Nd1 0–1. korwiktor (1685) – biskup1410 (1695), kurnik, 2012.

5.Qa4 a5 6.Nc3+– Qb5?? (better 6...Nf6+–) 7.Nb5+– e6 8.Nc7 Kd8 9.Na8 Nc6 10.Rb1 d6 11.Qb5 Kd7 12.Nb6 Kc7 13.Nc8 Kc8 14.Qb7 Kd8 15.Qc6 Be7 (15...Ke7 16.Rb7 Kf6 17.Qf3 Kg6 18.Qf7 Kg5 19.Nf3 Kh6 20.d4 g5 21.Bg5) 16.Rb8 1–0. DEFFM – GuestNSMZ, freechess.org, 2019.

5.Qa4 Nf6 6.Nc3+=.

5.Nc3 g6 6.Bb2 Bg7 7.Nd5 1–0. tyop (1775) – martoha1 (1615), kurnik, 2013.

5.e3 ab5 6.cb5 d5 7.Bb2 Nd7 8.Nf3 Ngf6 9.Be2 g6 10.0-0 Bg7 11.Qc2 0-0 12.a4 Re8 13.d3 e5 14.Nbd2 d4 15.Nc4 Qc7 16.Rfe1 Nb6 17.Bf1 Nc4 18.Qc4 Be6 19.Qc2 Rac8 20.Rac1 Bd5 21.Ng5 h6 22.Nh3 e4 23.ed4 ed3 24.Bd3 Re1 25.Re1 c4 26.Rc1 Kh7 27.g3 Ne8 28.Nf4 cd3 29.Qd3 Qc1 0–1. barborski (1605) – biskup1410 (1710), kurnik, 2013.

5.e3 ab5 6.cb5 d5 7.Bb2 Nf6 8.a4 e6 9.Nf3 Be7 10.Be2 0-0 11.0-0 Bd7 12.Nc3 Be8 13.Ne5 Nbd7 14.f4 c4 15.Bf3 Nc5 16.d4 cd3 17.Nd3 Nce4 18.Be4 Qe3 19.Rf2 Ne4 20.Ne4 de4 21.Ne5 Bc5 22.Ng4 Qd3 23.Qd3 ed3 24.Rd1 Ra4 25.Kf1 Bf2 26.Nf2 Bb5 27.Nd3 Rd8 28.Ke2 Rf4 29.Ke3 Rb4 30.Nb4 Rd1 31.h4 Re1 32.Kf4 Re2 33.Bd4 Rg2 34.h5 g6 35.h6 f5 36.Bg7 Rg4 37.Ke5 Rb4 38.Ke6 Re4 39.Kd5 Bc6 40.Kc5 f4 41.Bc3 f3 42.Be1 Re1 0–1. avinoam (1605) – biskup1410 (1675), kurnik, 2013.

5.e3 Nf6 6.Nf3 ab5 7.cb5 d5 8.Bb2 Bg4 9.a4 (9.h3 Bh5+=) 9...e6 10.Be2 c4 11.Bf6 gf6 12.0-0 Bg7 13.Nc3 0-0 14.h3 Bf3 15.Bf3 Nd7 16.Qc2 f5 17.Rfb1 Nc5 18.Be2 Nb3 19.Rb3 cb3 20.Qb3 Bc3 (better is 20...d4!? 21.ed4 Bd4–/+) 21.Qc3= Rfc8 22.Qb4 Qc5 23.Qh4 b6 24.Qg5 Kf8 25.Bh5 Qe7 26.Qh6 Kg8 27.g4? (27.d4 Rc4+=) 27...Qf8 (27...fg4!? 28.Bg4 Rc4 29.Kh2–+) 28.Qf4 (28.Qf8 Kf8 29.gf5 e5+=) 28...Qg7 29.Ra2 (29.d4!? fg4 30.Kh2–/+) 29...fg4–/+ 30.hg4 Rc4 (30...Rc1 31.Kg2–/+) 31.Qg3 (31.d4 e5 (31...Rca4?! 32.Ra4 Ra4 33.Qb8 Qf8 34.Bf7 Kf7 35.Qf4 Kg8 36.Qg5 Qg7 37.Qd8 Kf7 38.Qc7 Kg6 39.Qc2 Kf6 40.Qa4=) 32.Qf5 ed4 (32...Raa4?! 33.Qd7=; 32...Rca4?! 33.Ra4 Ra4 34.Qd7=) 33.Qd5 Rac8–/+ (33...Raa4?! 34.Qd8 Qf8 35.Qg5 Kh8 36.Qf6 Qg7 37.Qd8 Qg8 38.Qf6 Qg7 39.Qd8 Qg8 40.Qf6 Qg7=)) 31...Rca4 (31...e5–+) 32.Rc2? (32.Ra4 Ra4 33.Qb8 Qf8 34.Qb6 d4–/+) 32...Rc4 (32...R4a5!? 33.Rc7 Rf8 34.d4–+) 33.Rc4–/+ dc4 34.Qc7 f5 (34...f5 35.Qc4 Qe5+=) 0–1. barborski – anhba, playok.com, 2012.

4.Ra2 Qc4 5.Rc2 Qe6 6.Bb2 Nh6 7.Nf3 f6 8.Nd4 Qd5 9.f3 Nf5?? (better is 9...Qg5+=) 10.e4+– Qd6? (better is 10...Qd4 11.Bd4 Nd4+–) 11.Nf5 Qc7 12.Be2 e6 13.Nd4 e5 14.Nf5 (14.Nb3 d6+–) 14...d6 (14...d5 15.Ng3 Be6 16.ed5 Bd5 17.Rc1+–) 15.0-0 Bf5 16.ef5 Nd7 17.d4 Nb6 18.de5 de5 19.Nd2 (19.f4 Nd5 20.fe5 0-0-0+–) 19...Qc8?? (19...Nd5!?+/–) 20.Qe1 (better is 20.f4 Nd5 21.Bh5 (worse is 21.fe5 Ne3 22.Qb1 fe5+–) 21...Kd8 22.Nc4 (worse is 22.fe5 Ne3 23.Qb1 fe5+–) 22...ef4 23.Bf7 Qf5 24.Ne3+–) 20...Qf5 21.Ne4 Qg6 (21...Nd5 22.Rd2+–) 22.Rd2 Nd5 23.Bd3 Qf7? (23...Qh6 24.Qf2+–) 24.Bc4 (24.f4 Qc7+–) 24...Rd8 (24...b5 25.Bd5 cd5 26.Nc3+–) 25.Nc3 (25.f4 b5 26.fe5 f5 27.Nd6 Bd6 28.ed6 Kd7 29.Bd5 cd5 30.Rf5 Qe6+–) 25...Qe7 (25...b5 26.Bd5 cd5 27.f4+– (27.Nb5?! Qb7 28.Nd4 Kf7+–)) 26.Bd5 cd5 27.Nd5 Qe6 (27...Qf7 28.Qd1 Bd6+–) 28.Nc7 Ke7 29.Ne6 Ke6 30.Rd8 (30.Rd8 Bc5 31.bc5 Rd8 32.f4+–) 1–0. 55aa55 – moe1976, kurnik, 2012.

4.Bb2 Qb2 5.Nc3 +=.

4.Bb2 Qc4 5.e3 (5.Nf3 Qe6+=) 5...Qe6 6.Nf3 d5 7.Be2 (7.Nc3 Qd6+=) 7...Nf6 (7...Nd7 8.0-0+=) 8.0-0 g6 9.Be5 Bg7 10.Nc3 Nbd7 11.Bf4 Ne4 12.Ne4 Qe4 (12...de4 13.Ng5 Qf5 14.Rc1=) 13.d4= 0-0 14.Ng5 Qf5 15.Bg4 Qf6 16.Nf3 Bh8 17.Rc1 Qg7 18.b5 Nb6 (worse is 18...cb5 19.Rc8 Rfc8 20.Bd7+/–) 19.Bc8 Rfc8 (worse is 19...Nc8 20.bc6 bc6 21.Rc6+/–) 20.bc6 bc6 21.Ne5 g5 22.Bg3 Qh6 23.Nd3 (23.Qg4 Be5 24.Be5 Nc4+=) 23...Nc4 24.Qa4 e6 (24...Bg7 25.Rfd1+=) 25.Qa7?? (better is 25.Rc4 dc4 26.Qc4=) 25...Ra7–+ (25...Ra7 26.Rfd1 Ra3–+) 0–1. Kaniak,Andrzej – Sutton, email 4AMM–09, 1997.

5.Bb2 Qb2?? 6.Qb2+/– Nf6 7.Nf3 d6 (7...d5 8.e3+/–) 8.d3 (8.d4 Bf5+–) 8...Bg4 (8...e6 9.d4+–) 9.Nbd2 e5 10.e4 Nbd7 11.Be2 Be7 (11...a5 12.d4 ab4 13.ab4 Bf3 14.Bf3 ed4 15.Qd4+–) 12.0-0 (12.d4 Bf3 13.Bf3 ed4 14.Qd4 0-0+–) 12...0-0+/– 13.Re1 (13.d4 a5+/–) 13...Ne8 (13...a5 14.d4 ab4 15.ab4+/–) 14.d4+– ed4 15.Nd4 Be2 (15...Be6 16.Qb3+–) 16.Ne2 (16.Re2 Bf6+–) 16...Bf6 17.Qc2 (17.Qb1 Rd8+–) 17...Nc7 (17...a5 18.b5+–) 18.Ng3 g6 (18...Ne5 19.Nf5 Rad8 20.Qb3+–) 19.Qd3 (19.Rd1 Rfd8+–) 19...Be7 (19...Ne5 20.Qe3+– (20.Qd6?! Ne6 21.b5 c5=)) 20.f4 Rad8 (20...Rfe8 21.Nf3+–) 21.Nf3 White prepares the advance e5 (21.Nb3 Nb6+–) 21...Rfe8 22.Qb3 (22.Rd1 Nb6+–) 22...a6 (22...Nb6 23.Qc3+–) 23.e5 (23.Qc2 Ne6 24.Qd2 b5+–) 23...de5 24.Ne5 (24.fe5 c5+–) 24...Ne5 (24...Bf6 25.Nf3+/–) 25.Re5 (25.fe5 Bf6 26.Qc3 Bg7+=) 25...Bf6 (25...f6 26.Re1+/–) 26.Re8 Re8 27.Kf1 (27.f5 Kf8+/–) 27...Kg7 (27...Kf8 28.f5+/–) 28.f5 Re7 (28...Be5 29.Qe3+/–) 29.Qd3+– Re8 (29...Be5 30.Ne4+–) 30.Qd7 (better is 30.Nh5! gh5 31.Qg3 Kh6 32.Qc7+–) 30...Re7+/– 31.Qd3 (better is 31.Qd6+/–) 31...Re8+– 32.Qd6 (32.Nh5! gh5 33.Qg3 Kh6 34.Qc7 Re7 35.Qf4 Kg7 36.Qg3 Kh6+–) 32...Re7+/– 33.fg6 (33.Kf2 h5+/–) 33...fg6 34.Ne2 Kf7 35.Nd4 (35.g3 Ke8+/–) 35...Be5 36.Qc5 White prepares b5 (better is 36.Qd8+/–) 36...Ne6?? (36...Bh2!? 37.Nf3 Bf4+=) 37.Ne6 (better is 37.Qe5 Nd4 38.Qd4+–) 37...Re6+/– 38.g3 h6 39.a4 (39.Qe3 Bg7 40.Qd3 Ke7+/–) 39...h5 (39...Re7 40.a5+/–) 40.b5 (40.a5 Re7+/–) 40...cb5 41.cb5 ab5 (41...b6 42.Qd5 ab5 43.ab5+/–) 42.Qb5 (42.a5 Re7+/–) 42...b6 43.a5 (43.Qd5 Ke7+/–) 43...ba5 44.Qa5 g5 (44...Kf6 45.Qd8 Kf7 46.Qd5+/–) 45.Qd5 (better is 45.Qa7 Re7 46.Qe3+/–) 45...Kf6 (better is 45...g4!?+/–) 46.Qd8+– Re7 47.Qh8 (better is 47.Qf8!? Ke6 48.Qh6 Bf6 49.Qh5+–) 47...Kg6+/– 48.Qg8 Rg7 (48...Bg7 49.Qd8 Re5 50.Qd3 Rf5 51.Kg2+/–) 49.Qe6 (49.Qe8 Rf7 50.Ke2 Bf6+/–) 49...Bf6 50.Kg2 (50.Qe4 Kh6+/–) 50...h4 (50...Re7 51.Qg8 Kf5 52.Qc8 Kg6 53.h3+/–) 51.gh4 (51.Qe4 Kh6+/–) 51...gh4 52.Kh3 (52.Kf3 Re7 53.Qg4 Bg5+/–) 52...Re7 53.Qg8 (53.Qg4 Bg5+/–) 53...Rg7 54.Qe8 (54.Qd5 Kh7+/–) 54...Rf7 (54...Kf5 55.Qc8 Ke5 56.Qb8 Kf5 57.Qd6+/–) 55.Kg4 Kg7 56.Kh5 Be7 57.Qc8 Kh7 58.Qe6 Threatening mate: Qxf7 58...Kg7 59.Qh6 Kg8 60.Qg6 (60.Kg4 Rf6 61.Qc1 Kf7+/–) 60...Kf8 61.Qe6 (61.Qc6 Rg7+/–) 61...Kg7 62.h3 Kf8 63.Qc8 (63.Qh6 Rg7+/–) 63...Kg7 64.Qe8 (64.Qg4 Kf8 65.Qe4 Rg7+/–) 64...Rf5 65.Kg4 The mate threat is Kxf5 65...Rf7 66.Qb8 Kh7 67.Qe5 Rg7 (67...Kg8 68.Qd5+/–) 68.Kf4 Bg5 (68...Rf7 69.Ke4+/–) 69.Kf5 Kh6 70.Qe8 Kh7 ½–½. Pauli – Labahn,Wolfgang, Alligator–Pokal D–Gr, 1980.

5.Nc3 a5 6.ba5 e5.

5.Nc3?? e5 6.e4 Bb4! 7.ab4 Nf6 8.c5 b5 9.Ke2 (9.Nf3–+) 9...Ne4?? (better is 9...Na6 10.Na2 Ne4 11.Qe4 Qa2 12.Qe5 Kd8 13.Qg7 Re8 14.Kf3 Qb3 15.d3 Qd1 16.Ne2 Qd3 17.Be3 Qf5 18.Nf4 Nb4–+) 10.Bb2? (better is 10.Ne4 0-0 11.Bb2=) 10...Nc3–+ 11.Bc3? (better is 11.Qc3 Qb1 12.Qe5 Kd8 13.Qg5 Kc7 14.Be5 Kb7 15.Qg7–+) 11...Qa3 12.g3 (12.Qe4 f6 13.f4 a5 14.ba5 Qc5 15.fe5 f5–+) 12...d6! 13.cd6 Qa6 (13...a5!? 14.ba5 0-0 15.Qe4–+) 14.Be5 Nd7?? (14...0-0 15.Kd1–+) 15.Bg2?? (better is 15.Bg7 Rg8 16.Qe4 Ne5 17.Be5+–) 15...Ne5–+ 16.Qe4 (16.d4 Bg4 17.f3 Bf5 18.Qf5 Qa2 19.Kf1 Qa1 20.Ke2 Qb2 (20...Qd4?! 21.f4 Qc4 22.Ke3 Qc3 23.Ke2–+) 21.Kf1 Qd4–+) 16...f6 (better is 16...Kd8 17.f4 Bg4 18.Kf2 Qb6 19.d4 Ng6–+) 17.f4 Bg4 18.Ke1?? (better is 18.Nf3 0-0 19.fe5–+) 18...Qa1 (better is 18...0-0 19.fe5 Qa1 20.Kf2 fe5 21.Nf3 Bf3 22.Qh7 (22.Ra1?? Be4 23.Kg1 Bg2 24.Kg2 Rfd8–+) 22...Kh7 23.Ra1 Bg2 24.Kg2–+) 19.Kf2 0-0-0 (better is 19...0-0 20.Nf3 Bf3 21.Bf3 Qa3 22.fe5 fe5–+) 20.fe5+= Bd7 21.Nf3 (21.e6!? Be8 22.d7 Bd7 23.ed7 Kb8 24.Ne2+–) 21...Qb2 (better is 21...Qa2 22.Bh3 Kb8 23.Bd7 Rd7 24.Qc6 Rb7+=) 22.Ke2?? (22.e6!? Be8 23.d7 Bd7 24.ed7 Kd7 25.Rb1+–) 22...f5 (22...fe5!? 23.Rb1 Qa3–+) 23.Qd4 Qd4 24.Nd4 Rhe8 25.Bh3?? (better is 25.Nf3+=) 25...Re5–+ 26.Kf2 Rf8 (26...Rd5 27.Nf3–+) 27.Nf3 Rd5 28.Re1 Rd2 (better is 28...f4 29.Bg2 g5–+) 29.Nd2+– f4 (better is 29...g5!?+–) 30.Bd7 Kd7 31.Kf3?? (31.Ne4 fg3 32.Kg3 a5+–) 31...g5? (31...fg3 32.Kg3 Kd6+=) 32.gf4?? (better is 32.Ne4 fg3 33.Kg3+–) 32...Rf4= 33.Kg3 h5?? (better is 33...Rb4!? 34.Re7 Kd6 35.Rh7 a5+=) 34.Re4 (34.Ne4 Rg4 35.Kf3 Rf4 36.Ke3 Rh4+–) 34...h4 (34...Rf5 35.Rd4 c5 36.bc5 Rc5 37.Ne4+/–) 35.Kh3+/– Kd6 (35...Rf6!?+/–) 36.Rf4+– gf4 37.Kh4 c5 38.bc5 Kc5 39.Kg4 a5 40.Kf4 a4 41.Ke3 Kd5 42.Kd3 Kc5? (42...b4 43.Nf3+–) 43.Kc3 (better is 43.Ne4 Kd5 44.Nc3 Ke5 45.Nb5+–) 43...b4 44.Kb2 b3?? (better is 44...Kd4+–) 45.Ka3 Kd4 46.Ka4 b2 47.Kb3 b1Q 48.Nb1 Ke5 49.Kc3 Kf5 50.Kd3 Kg4 51.Nd2 Kh3 52.Nf1 Kh4 53.Ke3 Kg4 54.Kf2 Kh3 55.Kg1 Kh4 56.Ne3 Kh3 57.Kh1 Kh4 58.Kg2 Kg5 59.Kg3 Kg6 60.h4 Kh5 61.Nf5 Kg6 62.Kg4 Kh7 63.h5 Kh8 64.Kg5 Kh7 65.h6 Kh8 66.Kg6 Kg8 67.Nd6 Kh8 (67...Kf8 68.h7 Ke7 69.Nf5 Ke6 70.h8Q Kd5 71.Qd4 Kc6 72.Qc4 Kb7 73.Nd6 Kb6 74.Qc3 Ka7 75.Qc6 Kb8 76.Qb7) 68.Nf7 Kg8 69.h7 Kf8 70.h8Q Ke7 71.Qd8 Ke6 72.Qd6 1–0. The Monopoly Guy – MARYMARY, ChessWorld.net, 2011.

6.d3 e5 7.Nc3 Bb4 8.ab4 Qa6 9.Ne4!

6.d3 Nf6.

6.e3 Na6 7.Nc3 Nb4 8.ab4 Qa6 9.c5 b5 10.Nf3 Qb7 11.Bd3 Nf6 12.Ne5 a5 13.g4? (better is 13.ba5 d6 14.cd6 ed6 15.Nf3–+) 13...ab4 (better is 13...d6!? 14.cd6 ed6 15.g5–+) 14.Ne4 Ne4 15.Be4 e6 16.Bh7 b3 17.Qe4? (17.Qb3 Rh7 Deflection) 17...Ra2 (better is 17...Bc5 18.Bg6 Rf8 (worse is 18...fg6 19.Qg6 Kd8 20.Nf7 Kc7 21.Nh8+=) 19.Nf7 Rf7 20.Bg7 d5–+) 18.Bg6 Rh6?? (better is 18...Bc5 19.Bf7 Kd8–+) 19.Nf7+– Rg6 20.Nd6 Bd6 (20...Kd8 21.Nb7 Bb7 22.Qg6 Rb2+–) 21.Qg6 Kd8 (21...Ke7 22.Qg7 Ke8 23.cd6 Ra1 24.Ba1 b2 25.Qe7) 22.cd6 Rb2 (22...Ra1 23.Ba1 c5 24.Qg5 Ke8 25.Qe7) 23.Qg5 (23.Qg5 Ke8 24.Qe7#) 1–0. Schumacher,Dirk (2035) – Doeppner,Tilo (2175), Mecklenburg VP LL, 2007.

6.e3 Na6 7.Nf3 Nb4 8.ab4 Qa6 9.Nc3 Qb6 10.b5 Nf6 11.Be2 d6 12.0-0 g6 (12...e6!? 13.Ra1–+) 13.bc6 bc6 14.Ne4 Bg7 15.c5 dc5 16.Nc5 0-0 17.Bd4 Bf5 18.d3 Qc7 (18...Qd8 19.Ne5–/+) 19.Be5 Qc8 20.Qb2 Bg4 21.Rc1 a5 22.Na4 (22.h3 Bf5–/+) 22...Qd8 (22...Qf5 23.d4–/+) 23.d4 Nd5 24.Bg7 Kg7 25.Ne5 Be2 26.Qe2 Nb6 (26...Qd6 27.Qd1–/+) 27.Nc3 (27.Nc6 Rc8 28.Qb5 Na4 29.Qa4 Qd5–/+) 27...Qd6 28.Ne4 Qd5 29.Nc3 Qe6 30.Ne4 Nd7 31.Nd7 (31.Rc6!? Qf5 32.Nd7 Qd7 33.Rc1–+) 31...Qd7–+ (31...Qe4?! 32.Nf8 Rf8 33.Qb2=) 32.Nc5 Qd5 33.Qc2 Rfb8 34.Kh1 Rb4 35.Qc3 (35.Kg1 Rab8 36.Qd1 R4b5–+) 0–1. Pereira – Trainee, internet, 2020.

6.e3 Na6 7.Nf3 Nb4! 8.ab4 Qa6 (8...Nf6 9.Be2–+) 9.Be2 (9.Bd4 b6–+) 9...Qb6 10.Bc3 Nf6 11.0-0 g6 (11...d6 12.d4–+) 12.Qb2 (12.c5 Qd8–+) 12...Bg7 13.c5 Qd8 14.Na3 (14.Bf6 Bf6 15.d4 d5–+) 14...0-0 15.Nc4 d5 16.Na5 Ne8 (16...Qe8 17.Ra1–+) 17.Ra1 (17.Bg7 Ng7 18.d4 Qc7–+) 17...Bc3 18.Qc3 Qc7 19.h3 Nf6 20.d3 Re8 0–1. zozo – pcmvr, net–chess.com, 2017.

6.e4 Na6 7.Nf3 (7.Be2 Nb4 8.ab4 d6–+) 7...Nb4 8.ab4 Qa6 9.Be2 (9.c5 b5–+) 9...Qb6 10.Qb3 (10.Bc3 d6–+) 10...f6 (better is 10...a5!? 11.Bc3 c5 12.b5–+) 11.c5 Qc7 12.0-0 Nh6 13.d4 e6 (13...d6 14.Nbd2–+) 14.Nbd2 (14.Bc1 Nf7–/+) 14...b5 (14...d5 15.Ra1–/+) 15.d5–/+ e5 (15...a5 16.d6 a4 17.Qc3–/+) 16.d6+= Qd8 17.Nh4 g6 18.f4 Bg7 (18...ef4 19.e5 f5 20.Nf5 Nf5 21.e6 Bd6 22.Bh8+=) 19.Nf5 (19.fe5 fe5 20.Nhf3 Rf8=) 19...Nf5 (better is 19...gf5!? 20.Bh5 Kf8 21.fe5 Rg8 (21...fe5 22.Rf5 Qf6 23.Rf6 Bf6 24.Qf3+–) 22.ef6 Bh8+= (22...Bf6 23.Rf5 Rg5 24.Rf6 Qf6 25.Bf6 Rg6 26.Bg6 hg6 27.Be7 Kg7 28.Qc3 Kg8 29.Qf6 Rb8 30.Qg6 Kh8 31.Bf6)) 20.fe5 fe5 21.Rf5 Do you see the mate threat? 21...Rf8 22.Rh5 Qf6 (22...gh5 23.Bh5 A beautiful mate combination) 23.Re5 Kd8 (23...Qe5 24.Be5 Be5 25.Nf3+=) 24.Re8 Ke8 (24...Re8 25.Bf6 Bf6 26.Qa3+=) 25.Bf6 Bf6 26.Qh3 (26.e5 Bh4 27.Qh3 Bf2 28.Kh1 Rf7+–) 26...Rf7 (26...Bd4 27.Kh1 Rf7 28.Nf3+–) 27.Nf3 a5 28.e5 Bd8 29.e6 Threatening mate: exf7 29...de6 30.Ne5 Rg7 31.Ng6 (31.Bf3 Raa7 32.Bc6 Kf8 33.Qd3 ab4 34.d7 Bd7 35.Qd6 (35.Bd7?! Ra1 36.Kf2 Ra2 37.Ke1 Ra1 38.Ke2 Re7+–; 35.Nd7?! Kg8+–) 35...Re7 36.Nd7 (worse is 36.Bd7 Bc7 37.Qd4 Be5 38.Qe5 Red7+=) 36...Kg7 37.Ne5+–) 31...Bg5?? (31...Bf6 32.Ne5 Be5 33.Qh5 Kf8 34.Qe5 Kg8 (34...ab4 35.Qf6 Kg8 36.Qd8 Kf7 37.Qe7 Kg6 38.Bd3 Kh5 39.Qg7 Ra1 40.Qa1 e5 41.Qe5 Kh6 42.Qf6 Kh5 43.h3 Bh3 44.gh3 b3 45.Be2) 35.ba5 Bd7+–) 32.Bh5 (32.Qf3 hg6 33.Qc6 Bd7 34.Qa8 Kf7 35.Qf3 Bf6 36.ba5+–) 32...Kd8?? (32...hg6 33.Bg6 Kf8 34.Qh8 Rg8=) 33.Qf3+– (33.Qf3 Bd7 34.Qf8 Be8 35.Ne5+–) 1–0. Dupont,Gerhard – Diener,Rudolf, corr DDR–ch M781, 1985.

5.Bb2+= Qb6 6.Nf3 (6.e4 d6+=) 6...d6 7.e3 Bg4 8.Be2 Nbd7 9.d4 d5 (9...e6 10.c5 Qc7 11.Nbd2+=) 10.Nbd2 e6 11.0-0 (11.Bd3 Qc7+=) 11...Be7 12.Bd3 0-0 (12...Rd8 13.Ne5+=) 13.Ne5+/– g6 (13...h6 14.f3 Bh5 15.g4+/–) 14.Rae1 (14.c5!? Qc7 15.f3+– (15.Ng4?! Ng4 16.Nf3 Bf6+=)) 14...Bf5+= 15.Nd7 (15.Bf5 gf5 16.Nd7 Nd7+=) 15...Nd7 16.e4 (16.Bf5 gf5 17.c5 Qb5+=) 16...de4 17.Be4 (17.Ne4 a5+=) 17...Bf6 (17...Be4 18.Ne4 a5 19.c5+=) 18.Re3 (18.Bf5 gf5 19.Nb3 Rad8+=) 18...a5 (18...Bd4? 19.Bd4 Qd4 20.Bf5+–) 19.Rb3 (19.Bf5 gf5 20.ba5 Qa5 21.Rg3 Kh8+=) 19...Qc7 (19...ab4 20.Bf5 gf5 21.Rb4+=) 20.Bf5 ef5 21.c5 (21.ba5 Ra5 22.Re1 Rfa8+=) 21...a4 (21...ab4 22.Rb4 b6 23.cb6 Nb6 24.Rc1+=) 22.Rd3 Rfd8 (22...Rfe8 23.Nc4+/–) 23.Nc4 (23.Rd1 f4+/–) 23...Bg7 (23...b5 24.Nd6+/–) 24.Rfd1 (24.d5 cd5 25.Rd5 Nf6 26.Rd8 Rd8 27.Bf6 Bf6 28.Qa4 h6+–) 24...Nf6 (24...b5 25.Nd6 Nf6 26.d5 Nd5 27.Bg7 Kg7 28.Nb5 cb5 29.Qd2+/–) 25.Nb6 Ra6 (25...Rab8 26.Na4 Nd5 27.Nc3+/–) 26.Na4 (26.d5 Nd5 27.Bg7 Kg7+–) 26...Nd5 (26...Ng4 27.g3+/–) 27.Nc3 Nf4 28.Re3 h5 (28...Raa8 29.Rde1+/–) 29.Ne2 (29.Qb3 Raa8+/–) 29...Nd5 30.Red3 Raa8 31.Qb3 (31.Bc1 Qe7+/–) 31...Qe7 (31...Rd7 32.Nc3+/–) 32.Nc3 (32.Re1 Re8+/–) 32...Nf4 33.Re3 Qg5 The mate threat is Qxg2 34.Rg3 Qf6 The pressure on the backward pawn d4 grows (34...Qe7 35.d5 cd5 36.Bc1+= (36.Nd5?? Rd5 37.Bg7 Ne2 38.Kh1 Ng3 39.hg3 Rd1 40.Qd1 Kg7–+)) 35.Qc4 (35.Bc1 h4 36.Rf3 Ne6+=) 35...Rd4 Black gets strong play along the open d–file 36.Qf1 Rd1 (36...Qe6 37.Re1 Qc4 38.Qc4 Rc4 39.Rge3=) 37.Nd1 Qe6 38.Re3 Qd5 (38...Qa2 39.Bg7 Kg7 40.Qe1=) 39.Nc3 (39.Bg7!? Kg7 40.Nb2+=) 39...Qd2= 40.Qa1 (better is 40.Bc1 Qc2 41.Ne2=) 40...Rd8–+ 41.h3 Bd4 (41...Qc2 42.Kh2–+) 42.Nd1 Be3 43.Ne3 Nd3 44.Bf6 (44.Bh8 Qf2 45.Kh1 Qe1 46.Qe1 Ne1 47.Be5–+) 44...Qf2 45.Kh2 (45.Kh1 Re8 (45...Qe3?! 46.Bd8 f4 47.Qf1–+) 46.Bh8 Qe1 47.Qe1 Ne1–+) 45...Re8 (45...Qf4 46.Kh1 Rd7 47.Bh8 Nf2 48.Kg1 Nh3 49.Kh1–+) 46.Bh8 Threatening mate... how? 46...Qf4 47.g3 Qh6 48.Qd4 (48.Bd4 h4 49.Qf1 hg3 50.Kg3 Re3 51.Kh2–+) 48...Qh8 (48...Re3 49.h4 Re2 50.Kh3 Nf2 51.Kg2 Ne4 52.Kf3 Ra2 53.Qg7 Qg7 54.Bg7 Ra3 55.Ke2 Kg7–+) 49.Qd3 h4 (49...Qe5 50.Nf1–+) 50.Nc4 (50.Ng2 Qe5–+) 50...hg3 51.Kg3 (51.Kg2 f4–+) 51...Qh5 (51...f4 52.Kg2 Qh4 53.Qd1 Qg3 54.Kf1 f3 55.Ne3 Re3 56.Qd8 Kh7 57.Qh4 Qh4 58.Kg1 Re1 59.Kh2 Qf2) 52.Qd4 (52.Kf2–+) 52...Qe2 53.a4 (53.Qf4 Qd3 54.Qf3 Qc4–+) 53...g5 0–1. Wesslen,Ulf (2115) – Tetenkina,Irina (2085), Manhem op, 1999. (Marek's comment: "Manhem" is a chess club in Gothenburg, Sweden. In some game collections somebody changed this to "Mannheim", which is of course very very wrong).

5.Bb2+= Qg4 6.h3 Qg6 7.Qg6 hg6 8.Nc3 +=.

5.Nf3?? Qa1 6.Bb2 Qa2 7.e3 Na6 8.Nc3 Nb4.

5.Nf3?? Qb6?? 6.c5 (6.e4 d6+=) 6...Qc7 7.Bb2 g6 (7...d6 8.cd6 Qd6 9.e4+=) 8.Be5 (8.Nc3 d5+=) 8...Qd8 9.Qb2 (9.Bf6 ef6 10.d4 d6+=) 9...Bg7 10.e3 (10.Qd4 b5+=) 10...0-0 (10...d6 11.Bf6 Bf6 12.d4=) 11.h4 (11.Qd4 b6+=) 11...Ne8 (better is 11...d6!? 12.Bf6 Bf6=) 12.h5+/– Be5 13.Qe5 f6 (13...d6 14.Qh2 Bf5 15.hg6 Bg6 16.d4+/–) 14.Qh2 (14.Bc4 Kg7 15.Qf4 g5 16.Ng5 d5 17.cd6 e5+/–) 14...g5 15.Bc4 (15.d4 d5+=) 15...e6 16.Nc3 h6 (16...b5 17.Bb3+/–) 17.Nd4 (17.d4 d5 18.Be2 Ng7+=) 17...Kg7 (17...b6 18.Nf5 d5 19.cd6+= (worse is 19.Nh6 Kh7–/+)) 18.f4+/– b6 (18...b5 19.Bb3+/–) 19.Rf1 (19.0-0 bc5 20.bc5 Ba6 21.Ba6 Na6 22.fg5 hg5+/–) 19...bc5 20.bc5 Ba6 21.Be2 (21.Ba6 Na6 22.fg5 fg5 23.Qe5 Nf6+/–) 21...Be2 22.Ke2 (22.Nde2 f5+=) 22...Na6 (22...f5 23.fg5 Qg5 24.g4+/–) 23.fg5+/– hg5 (23...fg5 24.Rf8 Kf8 25.Qe5+–) 24.Ne4 Qb8 (24...Qe7 25.Rac1+/–) 25.h6 (25.Qb8!? Rb8 26.g4+/–) 25...Kg6+= 26.Ng3 (26.Qh3 Qe5 27.d3 Nc5=) 26...Kh7 (26...Nc5 27.h7 Rh8 28.Rab1=) 27.Nf3 (27.Rac1!?+=) 27...Qb5= 28.Ke1 Nec7 (28...Qc5!? 29.Ne4 Qe7+=) 29.Ne4+= Nd5? (29...Qb2 30.Ke2 Qb5 31.d3 Qb2 32.Nfd2 Nb5+–) 30.Neg5?? (30.Qd6 Rad8 31.Neg5 fg5 32.Ng5 Kg6 33.Rf8+–) 30...fg5= 31.Qe5 Do you see the mate threat? 31...Rg8?? (better is 31...Rf6 32.Ng5 Kg6+=) 32.Ng5 Kh6 (32...Kg6 33.Ne6! Qf1 34.Kf1 de6 35.Qe6 Kh7 36.Qd7 Kh8 37.Qc6 Nac7+–) 33.Nf7 1–0. Mohring,Norbert – Weber, Oberjoch op, 1994.

5.e4 Qe6 6.d4 d5 7.e5 f6 8.f4 Qg4 (8...g6 9.Be2+=) 9.Nge2 (9.Be2 Qd7= (9...Qg2? 10.Bf3 Bg4 11.Bg2 Bd1 12.Kd1+–)) 9...Nd7 10.h3 Qh4 11.g3 Qh5 12.Be3? (better is 12.Qd3!?+=) 12...Qf3–+ 13.Qd3?? (better is 13.Rg1 Qe3 14.g4 Ne5 15.de5–+) 13...Qh1 14.Ng1 (14.e6 Nb6 15.f5 Qf3–+) 14...Qh2 15.Bf2 Nh6 (better is 15...Nb6!? 16.b5–+) 16.Qf3 fe5 (better is 16...g5!? 17.fg5 fg5 18.Ra2–+) 17.de5 g5 18.Qh5 Kd8 19.Nf3 (19.Qe2 Qh1 20.fg5 Nf7–+) 19...Qh1 20.Ng5 Threatening mate... how? 20...Ne5 (20...Nb6 21.0-0-0–+) 21.0-0-0 (better is 21.fe5 Bg7 22.0-0-0–+) 21...Bg4?? (better is 21...Ng6 22.Bb5 Qg2–+) 22.Ne6 Be6 23.Qe5 A double attack 23...Rg8 24.Ba6 Qh3 (24...ba6 25.Rh1) 25.Bb7 Bg7 26.Qe3 Rb8 (26...Rc8!? 27.Ne2–+) 27.Qa7 Rb7 (27...Bc3?! 28.Qb8 Kd7 29.Bc6 Kc6 30.Qb6 Kd7 31.Qb5 Kc7 32.Qb6 Kc8 33.Qc6 Kb8 34.Qb6 Kc8 35.Qc6 Kb8 36.Qb6 Kc8=) 28.Qb7 Bc3 (better is 28...Ke8–+) 29.Qc6–/+ The mate threat is Bb6 29...d4 (better is 29...Bd7 30.Qa8 Bc8 31.Qd5 Ke8 32.Qc6 Bd7 33.Qc3 Qe6–/+) 30.Bd4= Do you see the mate threat? 30...Bd7 31.Bc3 (31.Qa8 Kc7 32.Qa7 Kd8 33.Qa8 Kc7 34.Qa7 Kd8 35.Qa8=) 31...Ke8+= (31...Rg3 32.Qa8 Kc7 33.Be5 Kb6 34.Qa5 Kb7 35.b5 Rc3 36.Bc3 (worse is 36.Qc3 Qc3 37.Bc3 Bb5+–) 36...Qe3 37.Rd2+–) 32.Rd7 Qd7 Threatening mate... how? 33.Qh6 Rg3 Threatening mate: Rxc3 34.Qh5 Kf8 35.Qe5 Qc8 (35...Qd3 36.Kb2–/+) 36.Kb2 (36.Qh8 Rg8 37.Qd4+=) 36...Rg2 (better is 36...Qc4 37.Qf5 Kg8–/+) 37.Kb3+= Qg4 38.Qd4 (38.Qh8 Qg8 39.Qg8 Rg8=) 38...Qe6 39.Qc4 Qc4 40.Kc4 Ke8 41.a4 (41.b5 Kd7=) 41...Kd7 (41...h5 42.a5 Kd7 43.a6–/+) 42.Kd5 e6 (42...h5 43.Be1+=) 43.Ke4 Re2 (43...h5 44.Bf6–/+) 44.Kd3 Rh2 45.Ke4? (better is 45.a5!?+=) 45...h5–+ 46.f5 (46.Bf6 Ra2 47.Kd4 Ra4 48.Kc5–+) 46...ef5 (better is 46...Rc2 47.Bd4 h4–+) 47.Kf5–/+ Rg2 (better is 47...h4 48.Kg4 h3+=) 48.Kf4? (better is 48.Be1+=) 48...h4–+ 49.Be1 (49.Be5 Re2 50.Bb8 h3–+) 49...h3 50.Kf3 Ra2 (50...Ra2 51.Bg3 h2 52.Bh2 Rh2–+) 0–1. Lieber,Karl Heinz – Diener,Rudolf, corr DDR, 1982.

5.e4 Qe6 6.d4 d5 7.Nf3 a5 =.

5.e4 Qe6 6.Nh3 d5 7.Nf4 (7.d4 de4 8.Ng5 Qg6+=) 7...Qf6 (7...Qd6 8.d4 e5 9.Nfe2+=) 8.d4 (8.Nh5 Qd6+=) 8...e5 9.Nh5 (9.Nfe2 de4 10.Ne4 Qg6+=) 9...Qe7 10.Be3. DeMaddin – Curlywurly, ChessWorld.net, 2003.

5.Nf3 a5 6.e3 (6.e4 Qe6 7.ba5 Nf6=) 6...Qe6 7.Na4 (7.b5 cb5 8.Bb2 b4 9.ab4 Qb6=) 7...d6 (better is 7...ab4!? 8.ab4 Qg4=+) 8.Nb6= Ra7 (8...Qf6 9.d4 (9.Na8?! Qa1 10.Nb6 Bg4=) 9...Ra7 10.Nc8+–) 9.Nd4 Qg4 10.f3 (10.Nc8?! Qc8 11.b5 e5=+) 10...Qh5 11.Nc8 Ra8 12.Nb6 Ra7 13.b5 (13.ba5 e5 14.Nb3 d5+–) 13...e5 14.Ne2 (14.Nc8 Ra8 15.Nb6 Ra7=) 14...Qh4 15.Ng3 Qd8 16.Na4 Nd7 (16...d5 17.d4 Bd6 18.Nf5+–) 17.Bb2 cb5 (17...d5 18.b6 Ra8 19.d4+–) 18.Bb5 Ngf6 19.d4 Nd5 20.de5 Ne3 21.Qd2 Qg5 22.Bd4 b6 (22...Ng2 23.Qg2 b6 24.Nb6 de5 25.Nd7 Rd7 26.Bb6+–) 23.Qe3 Qe3 24.Be3 (24…de5 25.Nb6+–) 1–0. Pommerel,Wim – Petrini, CIF–TT–94–0013A, 1994.

5.Nf3 Nf6 6.e4 Qe6 7.Qc2 d6 (7...d5 8.e5=) 8.d4 g6 9.Ng5 Qd7 10.e5 Nd5 11.Nd5 cd5 12.e6 fe6 13.Bd3 Nc6? (better 13...Qd8+=) 14.Bg6!+– hg6 15.Qg6 Kd8 16.Nf7 Kc7 17.Nh8 b6 (better 17...e5+–) 18.Bb2 Ba6 (18...e5 19.de5 Ne5 20.Be5 de5 21.Nf7+–) 19.Nf7 Rc8 (19...Kb7 20.Kd2+–) 20.f3 (20.h4 Kb8+–) 20...Kb7 (20...Kb8 21.Kf2+–) 21.Kf2 Nb8 (21...Nd8 22.Nd8 Qd8 23.Rac1+–) 22.Rac1 Rc1 (22...Nc6 23.Rhe1+–) 23.Rc1 1–0. pcmvr – jlbaf, net–chess.com, 2017.

5.Nf3 Nf6 6.e4 Qe6 7.Nd4 =.

5.Nf3 Nf6 6.e4 Qe6 7.Ng5 Qg4 8.Qg4 Ng4=.

6.Bb2 d5 7.Nf3 Qd6 8.Be2 Nf6 9.d4 Bf5 10.0-0 Nbd7 11.Rc1 e6 12.h3 Be7 13.Re1 (13.Nh4 Be4=+) 13...a5 (13...0-0 14.Nh4–/+) 14.b5=+ 0-0 15.Nh4 Be4 16.bc6 (16.f3 Qg3=+) 16...bc6–/+ 17.Nf3 Qb8 (17...Rfb8 18.Qd2–/+) 18.Na4 (18.Qd2 c5=+) 18...Nb6–/+ 19.Ba1 (19.Nc5!? Nc4 20.Bc4 Qb2 21.Qb3–/+) 19...Ba3–+ 20.Rc6 Na4 21.Qa4 Bd6 (21...Qb4 22.Qd1–+) 22.Rec1 (22.Bc3 Rc8–/+) 22...Rd8 (22...Qb4 23.Qb4 Bb4 24.Ng5–/+) 23.Bc3 Bf3 24.gf3 Rc8 25.Ba5 Rc6 26.Rc6 Qb1 27.Kg2 Bf8 28.Ba6 Qg6 29.Kh2 Qh5 30.f4 (30.Kg2 Nd7=+) 30...Ra6 31.Ra6 Qe2 32.Bc7?? (better is 32.Ra8 Qf2 33.Kh1 Qf3 34.Kh2 Qe2 35.Kh1 Qf1 36.Kh2 Qf2 37.Kh1=) 32...Qf2–+ 33.Kh1 Ne4 34.f5 Qe1 (35.Kg2 Qd2 36.Kh1 Qc1 37.Kg2 Qc7–+; 34...ef5?! 35.Qa1–+; 34...Qf5?! 35.Bf4 g5 36.Be5–+; 34...Qe3?! 35.Qc2 Qh3 36.Kg1 Qf5 37.Ra8–+) 0–1. Sternik,Ryszard – Seack,Ingo, corr SOK–92–88, 1992.

6.Bd3 Nf6 7.Nf3 d5 8.0-0 (8.Bb2 Qd6=) 8...Qd6+= 9.Qc2 (9.Bb2 e5 10.e4 d4=) 9...g6= 10.Bb2 Bg7 (10...Bg4!?=) 11.e4+= Bg4? (better 11...Nbd7 12.ed5 0-0 13.dc6 bc6+=) 12.e5+– Qd7 13.ef6 ef6? (13...Bf6 14.Ne1 Qe6+–) 14.Rfe1 (14.Rae1 Be6+–) 14...Be6 15.Na4 0-0 16.Nc5 Qc8 17.Nd4 Na6 (17...Re8 18.h4+–) 18.Ba6 ba6 19.Nce6 fe6 20.Ne6 (20.Re6 Qd7+–) 20...Re8 21.Ng7 Re1 (21...Kg7 22.Re8 Qe8+–) 22.Re1 Kg7 (22...Qd7 23.Bf6 Rf8+–) 23.Re7 Kf8 24.Bf6 (24.Qc5 Kg8 25.Bf6 Qd8 26.Rg7 Kh8 27.Qc6 Qf6 28.Qf6 h6 29.Qg6 Re8 30.Qh6) 24...Qg4 25.Qc5 Qd1 26.Re1 (26.Re1 Kg8 27.Rd1 Rf8 28.Qc6 g5 29.Qd5 Rf7 30.Re1 h5 31.Re8 Kh7 32.Qf7 Kh6 33.Rh8) 1–0. DEFFM – GuestRXCZ, freechess.org, 2019.

6.d4 d5 =.

6.Nf3 Nf6 7.Nd4 Qg4 8.Qb3 (8.Qg4 Ng4 9.Nf3 b5+=) 8...d5 9.h3 Qd7 10.b5 (10.Nf3!?–/+) 10...e5 11.bc6 Nc6 12.Nc6 bc6 (12...Qc6?? 13.Bb5 a6 14.Bc6 bc6 15.Qb6+–) 13.Be2 Bd6 14.Nb5 Rb8 (14...cb5 15.Bb5 0-0 16.Bd7 Bd7 17.d4+–) 15.Nd6 Qd6 16.Qa4 Qc5 (16...0-0 17.d4–/+) 17.0-0+= 0-0 18.Ra2 Bf5 19.Bb2 Nd7 20.Rc1 (20.d4!? Qc2 21.Qc2 Bc2 22.Bc3 ed4 23.Bd4–/+) 20...Rb2! 21.Rc5 (21.Rb2 Qc1 Double attack (21...Qc1 Decoy; 21...Qc1 Remove defender)) 21...Nc5 (worse is 21...Ra2 22.Rc6 Nf6 23.Qa5+/–) 22.Qc6 Ra2 23.Qc5 Rd2 24.Bf3 Rc8 25.Qa7 Be6 26.Qb7 Rc1 (26...h6 27.Bg4 Rc1 28.Kh2 Rf2 29.Qb8 Rc8 30.Qe5 Bg4 31.Qg3–+) 27.Kh2+= e4 (worse is 27...Rf2 28.Bd5 h6 29.Kg3=) 28.Bg4 Bg4 29.hg4 h6 30.Qb8 Kh7 31.Qf4 (31.Kg3 f6+=) 31...f6 (31...Rc6 32.Qf5 Kg8 33.Kg3–/+) 32.Qf5+= Kh8 33.a4 Rcc2 (33...Ra2 34.Kg3 Ra4 35.g5 fg5 36.Qf8 Kh7 37.Qf5 Kg8 38.Qe6 Kf8 39.Qd6 Ke8 40.Qe6 Kd8 41.Qg8 Kd7 42.Qg7 Ke8 43.Qe5 Kf8 44.Qd6 Ke8 45.Qd5+/–) 34.a5 (34.Kg3 Rc5+=) 34...Rc5 (34...Rf2 35.Qd5 Rg2 36.Kh3 Rh2 37.Kg3 Rcg2 38.Kf4 h5 39.Ke4 Rg4 40.Kf3 Rg5 41.Qa8 Kh7–+) 35.g5 hg5 36.Qh3 Kg8 37.Qe6 Kh7 38.Qe8 ½–½. Fournier,Frederic – Mephisto Mondial, Match Thematique, 2000.

6.Nf3 Nf6 7.Be2 a5 8.Qa4+=.

6.Nf3 Nf6 7.Be2 Nd5 8.Nd4 Qf6 9.Nd5 cd5 10.Bb2 e5 (better 10...Nc6!?+=) 11.Nb5+– Kd8 (11...Na6 12.Rc1 d6 13.0-0+–) 12.d4 (12.f4!? d6 13.0-0 Qe6+–) 12...e4 13.0-0 Nc6 14.f3 Qh6 (14...Qg5 15.fe4 a6 16.ed5 ab5 17.dc6 Qe3 18.Kh1+–) 15.Qd2 a6 16.Nc3 f5 (16...Bd6 17.h3 ef3 18.Bf3 Qg5 19.Bd5 f5+–) 17.Nd5 Bd6 18.h3 Ne7 19.Nb6 Bh2 20.Kh2 Qb6 21.fe4 fe4 22.d5 Qd6 23.Kg1 Qd5 24.Bd4 Qg5? (24...d6 25.Rac1 b5+–) 25.Rf7 Rg8 (25...Nc6+–) 26.Bc4 Nc6 (26...Qg6 27.Raf1 h5+–) 27.Bb6 Ke8 28.Raf1 d5 29.Bd5 Bh3 (29...Ne5 30.R7f4 Bh3 31.Bg8 Qg2 32.Qg2 Bg2 33.Kg2+–) 30.Rb7 Nd8 31.Bd8 Qg2 32.Qg2 Bg2 33.Kg2 Rb8 (33...Kd8 34.Bg8 Ke8 35.Bh7 a5 36.Bg6 Kd8 37.Rf8) 34.Rb8 Kd7 35.Bg8 (35.Bg8 h5 36.Rd1 Kc6 37.Rb6) 1–0. DEFFM – guestslow, freechess.org, 2019.

6.Nf3 Nf6 7.Be2 g6 8.Ng5 (8.Nd4 Qd6=) 8...Qf5 9.Nf3 d5 10.0-0 Bg7 11.Bb2 0-0 12.d4 b6 13.Rc1 Bb7 14.Bd3 Qd7 15.Ne5 Qd8 16.Ne2 Nfd7 17.f4 f6 18.Nf3 e5 (18...e6 19.e4=+) 19.de5= fe5 20.e4 Qe7 21.ed5 cd5 22.Rc7 Bc6 Black prepares e4 (22...e4 23.Bg7 Kg7 24.Rb7 ef3 25.Rf3+/-) 23.b5+/- e4 (23...Qc5!? 24.Rf2 e4 25.Bg7 Kg7+/-) 24.Bg7+- (24.bc6?! A) 24...ef3 A1) 25.cd7?! Bb2 26.Rf3 Qd6= (26...Nd7? 27.Bb5+-); A2) 25.Rd7? Qc5 26.Kh1 Bb2 27.Rf3 Nd7 28.cd7 Rad8-+; A3) 25.Bg7 fe2 26.Qe2 Qe2 27.Be2 Kg7 28.cd7+-; B) 24...Bb2 25.cd7 ef3 26.Rf3 Qd6= (26...Nd7? 27.Bb5+-)) 24...ed3 25.Qd3 (better 25.Ned4 Qd6 A) 26.Nc6?! Kg7 (worse 26...Qc7 27.Bf8 Nc6 28.Qd3+/-) 27.Ng5 Rf6+=; B) 26.bc6?! Qc7 27.cd7 Rf7+-; C) 26.Rc6 Nc6 27.Bf8 (27.bc6?! Kg7 28.cd7 Qd7+/-) 27...Nf8 28.bc6 Qa3 29.Qd2+-) 25...Kg7? (better 25...Qc5 26.Qd4 Qd4 27.Nfd4 Bb5 28.Bf8 Be2 29.Ne2 Kf8+-) 26.bc6 Qc5 (26...Qd6 27.Qc3 (27.Rd7?! Nd7 28.cd7 Qd7+/-) 27...Kg8 28.cd7 (28.Rd7?! Nd7 29.cd7 Qd7+/-) 28...Nd7 29.Ng5+-) 27.Nfd4 (27.Nfd4 Kh8 28.Rc1+- (28.Rd7?! Nd7 29.cd7 Qe7+-)) 1-0. onur604 (2320) - TomChupi (2215), Casual Rapid game, lichess.org, 2021.

6.Nf3 Qg4 7.d4 Nf6 8.h3 Qh5 9.Be2 d6 (better 9...d5!?+–) 10.e4+– Bg4 (10...g5 11.Ng5 Qg6 12.e5+–) 11.0-0 Bf3 (11...Bh3 12.gh3 Qh3 13.Qd3+–) 12.Bf3 (12.gf3?! Qh3 13.e5 de5 14.de5 Nfd7=+) 12...Qh4 (12...Qg6 13.e5 Nd5 14.Nd5 cd5 15.Qa4 Nd7 16.Bd5+–) 13.e5 de5 14.de5 Qc4 15.Bb2 (15.ef6?! Qc3 16.fe7 Be7+–) 15...Nfd7 16.Nd5! Na6 (16...cd5 17.Qd5 Double attack) 17.Ne3 Qf4 (17...Qh4 18.Qc2 Rc8 19.Rfd1+–) 18.e6! fe6 (18...fe6 19.b5 Combination) 19.Bh5 Kd8 20.Bg4 Nc7 21.Qd3 Qf7 22.Rad1 Nd5 23.Qe4 Nc7?? (better 23...Qg6 24.Qe6 Qe6 25.Be6 N7f6+–) 24.Nc4 Qe8 (24...Nd5 25.Be6 Qg6 26.Bd5 Qe4 27.Be4+–) 25.Ne5 Nd5 26.Be6 N7f6 27.Qc2 Kc7 28.Nf7 b5 (28...Rd8 29.Be5 Rd6 30.Rfe1+–) 29.Nh8 (29.Be5 Kb7 30.Nh8 Nb6+–) 29...Nb6 (29...Kb7 30.Be5 Rd8 31.Nf7+–) 30.Nf7 (30.Nf7 Kb7 31.Ne5+–) 1–0. DEFFM – guestslow, freechess.org, 2019.

8.d4 a5 A) 9.Be2 A1) 9...Qd6 10.b5 (10.ba5 Ra5 11.0-0 Nbd7 12.Qb3 e6 13.a4 Qc7 14.Ba3) 10...Bf5 11.0-0 Nbd7 12.Nh4 Bg6 13.bc6 bc6 14.Ng6; A2) 9...Nbd7 10.b5 (10.0-0 ab4 11.ab4 Ra1 12.Qa1 g6 13.b5 Bh6 14.bc6) 10...Nb6 11.bc6 bc6 12.Ne5 Nfd7 13.Nf3 Nf6 14.0-0; A3) 9...ab4 10.ab4 Ra1 11.Qa1 Qd6 12.Qa8 Nfd7 13.b5 Nb6 14.Qa5; B) 9.b5 B1) 9...Nbd7 10.bc6 (10.Be2 Nb6 11.bc6 bc6 12.0-0 Qd6 13.Ne5 Nbd7 14.Qc2) 10...bc6 11.Bd3 c5 12.0-0 c4 13.Bc2 Rb8 14.Rb1; B2) 9...Qd6 10.Bd3 (10.Be2 g6 11.0-0 Bg7 12.a4 0-0 13.Ba3 Qd8 14.Qb3) 10...Nbd7 11.bc6 bc6 12.0-0 Ba6 13.Rb1 Bd3 14.Qd3; B3) 9...g6 10.Bd3 (10.h3 Bh6 11.Be2 0-0 12.0-0 cb5 13.Nb5 Qb6 14.Rc1) 10...Bh6 11.0-0 0-0 12.Qe2 Nbd7 13.bc6 bc6 14.h4; C) 9.Qa4 C1) 9...Qd6 10.b5 (10.ba5 Nbd7 11.Bd3 Nb6 12.Qb3 Nc4 13.Bc4 dc4 14.Qc4) 10...Nbd7 11.bc6 bc6 12.Qc2 g6 13.Bd3 c5 14.0-0; C2) 9...Qf5 10.b5 (10.Be2 b5 11.Qb3 ab4 12.ab4 Ra1 13.Ba1 Nbd7 14.0-0) 10...e6 11.Rd1 Bd6 12.Bd3 Qh5 13.0-0 0-0 14.h3; C3) 9...Nbd7 10.Bd3 (10.Be2 Nb6 11.Qb3 ab4 12.Qb4 Nc4 13.Bc4 dc4 14.Ne5) 10...Nb6 11.Qb3 ab4 12.ab4 Ra1 13.Ba1 g6 14.0-0; D) 9.ba5 D1) 9...Nbd7 10.a6 (10.Qb3 Ra5 11.Bd3 c5 12.Bb5 c4 13.Qb4 Qb6 14.Ba4) 10...b6 11.Rc1 b5 12.a7 Nb6 13.Ne5 Nc4 14.Bc4; D2) 9...Qd6 10.Bd3 (10.Qb3 Ra5 11.Bd3 Nbd7 12.0-0 e6 13.a4 Qb8 14.h3) 10...Ra5 11.0-0 b6 12.a4 Nbd7 13.Qe2 Bb7 14.h3; D3) 9...Ra5 10.Bd3 (10.Qd2 g6 11.Bd3 Bh6 12.0-0 b6 13.Ne5 Nbd7 14.f4) 10...g6 11.0-0 Bh6 12.Ne2 Ne4 13.Qc2 0-0 14.Nd2.

8.d4 Na6 A) 9.Bd3 A1) 9...Bd7 10.Ne5 (10.0-0 g6 11.Ng5 Qg4 12.Qg4 Ng4 13.b5 Nc7 14.bc6) 10...g6 11.Nd7 Nd7 12.Qf3 Bg7 13.b5 Nc7 14.bc6; A2) 9...Nc7 10.0-0 (10.Na4 Qd6 11.0-0 g6 12.Ne5 Bg7 13.Rc1 0-0 14.h3) 10...g6 11.Ne5 Bg7 12.f4 Qd6 13.b5 0-0 14.bc6; A3) 9...g6 10.0-0 (10.b5 cb5 11.0-0 Bd7 12.Ne5 b4 13.Nd7 Nd7 14.Nb5) 10...Bh6 11.b5 cb5 12.Nb5 Bd7 13.Ne5 0-0 14.Rc1; B) 9.b5 B1) 9...cb5 10.Bb5 (10.Ne5 b4 11.Qa4 Bd7 12.Nd7 Nd7 13.ab4 Qd6 14.Bb5) 10...Bd7 11.Bd7 Nd7 12.0-0 Qb6 13.Rb1 Nc7 14.Bc1; B2) 9...Nb8 10.Bd3 (10.Be2 cb5 11.Bb5 Nc6 12.0-0 g6 13.Bd3 Bd7 14.Ng5) 10...g6 11.0-0 Bg7 12.Qb3 0-0 13.Ng5 Qd6 14.g3; B3) 9...Nc7 10.bc6 (10.Rc1 Qd6 11.Bd3 g6 12.0-0 Bg7 13.bc6 bc6 14.Na4) 10...bc6 11.Bd3 g6 12.Qa4 Bg7 13.0-0 0-0 14.Rab1; C) 9.Be2 C1) 9...Bd7 10.Ne5 (10.0-0 g6 11.b5 cb5 12.Ne5 Bg7 13.Nd7 Nd7 14.Qb3) 10...g6 11.Na4 b5 12.0-0 Bg7 13.Nc3 0-0 14.Qd3; C2) 9...Qd6 10.Qb3 (10.0-0 Bf5 11.b5 Nc7 12.Qb3 h5 13.h3 Ne6 14.Qa4) 10...Bf5 11.0-0 Nc7 12.b5 h5 13.h3 Ne6 14.Qa4; C3) 9...g6 10.b5 (10.0-0 Bh6 11.Ne5 0-0 12.Qc2 Nb8 13.b5 c5 14.Nd3) 10...cb5 11.0-0 Bh6 12.Bb5 Bd7 13.Bd7 Nd7 14.Qb3; D) 9.Qa4 D1) 9...b5 10.Qb3 (10.Qc2 g6 11.Bd3 Bh6 12.0-0 0-0 13.Ne2 Bb7 14.Nf4) 10...g6 11.Bd3 Bg7 12.0-0 Qd6 13.Ne5 0-0 14.f4; D2) 9...Qd6 10.Bd3 (10.Be2 Ne4 11.0-0 Nc3 12.Bc3 Nc7 13.Rac1 Bf5 14.Bb2) 10...Nc7 11.0-0 g6 12.b5 Bf5 13.Bf5 gf5 14.Ne5; D3) 9...g6 10.b5 (10.Bd3 Bg7 11.0-0 0-0 12.h3 Nc7 13.Ne5 Nd7 14.Nf3) 10...Nc7 11.Ne5 Bd7 12.Bd3 c5 13.0-0 c4 14.Be2.

8.d4 Qd6 A) 9.Be2 A1) 9...Bf5 10.Nh4 (10.0-0 Nbd7 11.Nh4 Be6 12.Nf3 Bf5 13.Qd2 g6 14.b5) 10...Bg6 11.0-0 Nbd7 12.h3 0-0-0 13.b5 c5 14.Qd2; A2) 9...Nbd7 10.b5 (10.0-0 g6 11.Qc2 Bg7 12.h3 0-0 13.Ng5 Nb6 14.Qb3) 10...g6 11.0-0 Bg7 12.Rc1 0-0 13.Qc2 Rb8 14.Na4; A3) 9...g6 10.0-0 (10.h3 Bg7 11.0-0 0-0 12.Qb3 Nbd7 13.Bd3 b6 14.a4) 10...Bg7 11.Nd2 0-0 12.e4 de4 13.Nde4 Qc7 14.Nf6; B) 9.h3 B1) 9...g6 10.Bd3 (10.Rc1 Nbd7 11.Bd3 Bg7 12.0-0 0-0 13.Ne2 a5 14.b5) 10...Nbd7 11.Rc1 Bg7 12.Qb3 0-0 13.0-0 Nb6 14.Ne5; B2) 9...Bf5 10.Nh4 (10.Bd3 g6 11.0-0 Nbd7 12.Re1 Bg7 13.Bf5 gf5 14.b5) 10...Be4 11.Ne4 Ne4 12.Bd3 Nd7 13.0-0 g6 14.Be4; B3) 9...Nbd7 10.Bd3 (10.Qb3 g6 11.Bd3 Bg7 12.0-0 0-0 13.Rac1 a5 14.ba5) 10...g6 11.0-0 Bg7 12.Qb3 0-0 13.Rfd1 b6 14.a4; C) 9.Qb3 C1) 9...Nbd7 10.Bd3 (10.Be2 g6 11.Ng5 Bh6 12.Nf3 0-0 13.0-0 Re8 14.Rfe1) 10...g6 11.h3 Bg7 12.0-0 0-0 13.Rfd1 b6 14.a4; C2) 9...Bf5 10.Nh4 (10.Be2 Nbd7 11.0-0 g6 12.h3 Bg7 13.g4 Be6 14.Ng5) 10...Bg6 11.Be2 Nbd7 12.0-0 0-0-0 13.Rad1 Kb8 14.h3; C3) 9...g6 10.Bd3 (10.Be2 Bg7 11.0-0 0-0 12.h3 Bf5 13.g4 Be6 14.Ng5) 10...Nbd7 11.a4 Bg7 12.0-0 0-0 13.a5 Re8 14.h3; D) 9.Bd3 D1) 9...g6 10.h3 (10.0-0 Nbd7 11.Ne2 Bg7 12.Qc2 0-0 13.Nf4 Ne4 14.Rae1) 10...Nbd7 11.0-0 Bg7 12.Qb3 0-0 13.Rfe1 a5 14.Rac1; D2) 9...a5 10.b5 (10.ba5 Ra5 11.0-0 Nbd7 12.a4 b6 13.Qc2 Bb7 14.Ba3) 10...Nbd7 11.0-0 c5 12.a4 c4 13.Ba3 Qc7 14.Bc2; D3) 9...Nbd7 10.0-0 (10.Qc2 g6 11.0-0 Bg7 12.Ne2 0-0 13.Rfc1 Nh5 14.g4) 10...g6 11.Nd2 Bg7 12.e4 de4 13.Nce4 Qc7 14.Qf3.

8.d4 Nbd7 A) 9.Be2 A1) 9...Nb6 10.0-0 (10.Qb3 Nc4 11.0-0 g6 12.Na4 Ne4 13.Nc5 Nc5 14.dc5) 10...g6 11.b5 Nc4 12.Bc4 dc4 13.bc6 bc6 14.Qa4; A2) 9...h5 10.0-0 (10.Bd3 g6 11.0-0 Bh6 12.h3 0-0 13.Re1 Nb6 14.Qe2) 10...Nb6 11.h3 Qd6 12.Qb3 Bf5 13.b5 g5 14.Ng5; A3) 9...g6 10.Ng5 (10.0-0 Bh6 11.Bd3 0-0 12.Re1 Nb6 13.Ne5 Nc4 14.Bc4) 10...Qf5 11.h4 Nb6 12.Bd3 Qg4 13.Be2 Qf5 14.Bd3; B) 9.g3 B1) 9...g6 10.Bd3 (10.Bg2 Bg7 11.0-0 0-0 12.Qc2 Nb6 13.Ne5 Ng4 14.Nd3) 10...Bh6 11.0-0 0-0 12.Qc2 Nb6 13.Ne5 Nfd7 14.Ne2; B2) 9...Qd6 10.Bd3 (10.Bg2 h5 11.0-0 Nb6 12.Ne5 h4 13.e4 h3 14.Bf3) 10...g6 11.0-0 Bg7 12.Qc2 0-0 13.Ne2 Ne4 14.Be4; B3) 9...Nb6 10.Ne5 (10.Bd3 Nc4 11.Qe2 Nb2 12.Qb2 Qh3 13.Bf1 Qh5 14.Bg2) 10...h5 11.Qe2 h4 12.Bg2 Nbd7 13.Nd3 hg3 14.hg3; C) 9.Qc2 C1) 9...Qg4 10.h3 (10.b5 e6 11.Rg1 c5 12.h3 Qg6 13.Qg6 hg6 14.Kd2) 10...Qg6 11.0-0-0 a5 12.b5 e6 13.g4 Qc2 14.Kc2 Bd6; C2) 9...a5 10.b5 (10.ba5 Ra5 11.Bd3 Nb6 12.0-0 Nc4 13.Qe2 b5 14.h3) 10...Qg4 11.Rc1 e6 12.Na4 cb5 13.h3 Qg6 14.Qg6; C3) 9...g6 10.Bd3 (10.a4 Bh6 11.a5 0-0 12.Bd3 Qd6 13.0-0 Re8 14.b5) 10...Bh6 11.Ne2 0-0 12.0-0 Ne4 13.Nf4 Qd6 14.Ne5; D) 9.Bd3 D1) 9...Qd6 10.0-0 (10.Qd2 g6 11.0-0 Bg7 12.Qc2 0-0 13.Ne2 Ne4 14.Be4) 10...g6 11.Qc2 Bg7 12.Ne2 0-0 13.Nf4 Ne4 14.h3; D2) 9...Nb6 10.0-0 (10.h3 g6 11.0-0 Bg7 12.Qe2 0-0 13.b5 Bd7 14.bc6) 10...g6 11.Ne5 Nfd7 12.Ne2 Bg7 13.Nf3 Qd6 14.Qc2; D3) 9...g6 10.Ng5 (10.h4 Bg7 11.0-0 Qd6 12.b5 c5 13.e4 de4 14.Ne4) 10...Qd6 11.f4 h6 12.Nf3 g5 13.Ne5 a5 14.ba5.

9.Qb3 A) 9...Nbd7 10.Bd3 (10.Rd1 Bh6 11.Bd3 0-0 12.0-0 a5 13.h4 ab4 14.ab4) 10...Bh6 11.0-0 0-0 12.h4 Qd6 13.a4 Bg7 14.Ba3; B) 9...Bg7 10.Bd3 (10.h3 0-0 11.Bd3 Nbd7 12.0-0 Qd6 13.Rfe1 b6 14.a4) 10...Nbd7 11.0-0 0-0 12.a4 a5 13.Ba3 ab4 14.Bb4; C) 9...Bh6 10.h4 (10.Bd3 0-0 11.0-0 Nbd7 12.Rfe1 Nb6 13.Ne2 Ne4 14.Nf4) 10...Nbd7 11.Bd3 0-0 12.0-0 Qd6 13.a4 Ng4 14.e4.

9.Qd2 A) 9...Nbd7 10.Ng5 (10.b5 Bh6 11.Be2 0-0 12.0-0 c5 13.h4 c4 14.Ng5) 10...Qd6 11.Bd3 Bg7 12.0-0 0-0 13.h3 e5 14.Be2; B) 9...Bg7 10.Be2 (10.Bd3 Nbd7 11.0-0 0-0 12.h3 Qd6 13.Qc2 Nb6 14.Ne2) 10...0-0 11.0-0 Qd6 12.Bd3 Nbd7 13.Qe2 b6 14.h3; C) 9...Bh6 10.Bd3 (10.h4 0-0 11.Bd3 Nbd7 12.Qe2 Nb6 13.0-0 Qg4 14.b5) 10...Nbd7 11.0-0 0-0 12.Qe2 b6 13.h4 Qg4 14.g3.

9.Bd3 A) 9...Bg7 10.0-0 (10.Ne2 Nh5 11.0-0 0-0 12.h3 Nd7 13.g4 Nhf6 14.Nf4) 10...0-0 11.Ne2 Nh5 12.h3 Nd7 13.Qc2 Qf6 14.a4; B) 9...Nbd7 10.0-0 (10.Ng5 Qd6 11.0-0 Bh6 12.f4 0-0 13.e4 de4 14.Nce4) 10...Bh6 11.Qc2 0-0 12.Rfe1 Qd6 13.Ne2 a5 14.Bc3; C) 9...Bh6 10.0-0 (10.h3 Nbd7 11.0-0 0-0 12.Re1 Nb6 13.Qe2 Nc4 14.Bc4) 10...0-0 11.Qb3 Nbd7 12.h3 a5 13.Rfe1 b6 14.e4.

8.Be2 Nbd7 9.0-0 h6 10.Qc2 g5 11.Nd4 Qe5 12.f4 Qc7 13.f5 Bg7 14.e4 0-0 15.ed5 cd5 16.Rac1 Qb6 17.Na4 Qd8 18.Bf3 Nb6 19.Nb6 ab6 20.Rfe1 Bd7 21.Qc7 Rb8 22.Qd8 Rfd8 23.Re7 Ba4 24.Rcc7 Be8 25.Rb7 g4 26.Be2 h5 27.Bb5 Bf8 28.Rb8 Rb8 29.Ra7 Ne4 30.d3 Nd6 31.Be8 Ne8 0–1. emeryt85 – inspcluzzooo, kurnik, 2014.

9.Be2 Nbd7 10.Qd3 Bh6 11.0-0 0-0 12.h3 a5 13.Qc2 b6 14.Rfe1.

9.Be2 Nbd7 10.Ng5 Qf5 11.h4 Nb6 12.Bd3 Qg4 13.Be2 Qf5 14.Bd3.

9.Be2 Bg7 10.0-0 (10.Qc2 0-0 11.0-0 Nbd7 12.Ng5 Qd6 13.Rfd1 Nb6 14.e4) 10...0-0 11.Ng5 Qf5 12.f4 Na6 13.Bd3 Qg4 14.Be2.

9.Be2 Bh6 10.0-0 (10.Qc2 Nbd7 11.0-0 0-0 12.h3 b6 13.h4 Bb7 14.Ng5) 10...0-0 11.b5 (11.Bd3 Nbd7 12.Qe2 b6 13.h4 Qg4 14.g3) 11...cb5 (11...Bd7+= 12.a4 Rc8 13.Ne5 c5 14.h4; 11...Nbd7 12.bc6 bc6 13.Rb1 Rb8 14.Qa4) 12.Qb3 (12.Nb5!? Qb6 13.a4+= (13.Rb1 Nc6 14.Bd3) 13...Nc6 14.Qe1) 12...a6–/+ 13.a4 ba4 14.Na4 Nbd7 15.Rfc1 (15.Nc5 Qb6–/+) 15...b6 16.Nc3 (16.Ne5 Bb7 17.Rc7–/+) 16...Rb8 (16...Bb7!?–+) 17.Ba6–/+ Ba6 18.Ra6 Rfc8 19.Na4 (19.Ra7 Ra8 20.Rca1 Ra7 21.Ra7 Qf5+=) 19...Rc1–/+ 20.Bc1 Qc6 21.Nc3 Ne4 22.Bb2 (22.Bd2 Nc3 23.Bc3 Rc8–/+) 22...Rc8 23.Ra3 e6 24.g3 (24.Qd1 Nd6 25.Nd2 Bg7–/+) 24...Bf8 25.Ne4? (better is 25.Ra7–/+) 25...de4 26.d5 (26.Nd2 Ba3 27.Ba3–+) 26...Qd5 (26...ed5?! 27.Nd4 Qc4 28.Ra7 Qb3 29.Nb3–+) 27.Qd5 ed5 28.Ra7 (28.Nd4 Ba3 29.Ba3 Nc5–+) 28...ef3 29.Rd7 Rc2 30.Rd5 Rb2 (30...Rb2 31.h3 Rb1 32.Kh2 Rf1–+) 0–1. Hoefer,Heijo – Zimmermann,Klemens, Koblenz op, 1992.

9.h3 A) 9...Bh6 10.Be2 (10.g4 Bg7 11.Bd3 Nbd7 12.Qc2 0-0 13.Ne2 Ne4 14.Nf4) 10...Nbd7 11.0-0 0-0 12.Qc2 b6 13.h4 Bb7 14.Ng5; B) 9...Bg7 10.Bd3 (10.Ng5 Qd6 11.Bd3 Nbd7 12.0-0 0-0 13.Qb3 e5 14.Be2) 10...Nbd7 11.0-0 0-0 12.Qb3 Qd6 13.Rfd1 b6 14.a4; C) 9...Nbd7 10.Ng5 (10.Bd3 Bh6 11.0-0 0-0 12.Qb3 b6 13.Bc1 Bb7 14.e4) 10...Qd6 11.Bd3 Bh6 12.Nf3 Nb6 13.Ne5 Be6 14.0-0.

7.Bb2 Qd6 8.Qc2 (8.e4 de4 9.Ne4 Qf4=) 8...Nf6 (8...e5 9.Rc1 Nd7 10.Be2–/+) 9.Nb5 (9.d4 Bg4+=) 9...Qd8 10.Rc1 (10.Nc3 e6+=) 10...Nbd7 (10...a5 11.ba5 Nbd7 12.Nbd4 Qa5 13.Be2–/+) 11.Nbd4 e6 (11...a5 12.b5 c5 13.Nf5–/+) 12.Nc6 (12.d3!?–/+) 12...bc6 13.Qc6 Rb8 14.Be5 (14.Qa4 Bd6–/+) 14...Bb7 15.Qb5 (15.Qa4!? Rc8 16.Rc8 Qc8 17.Bf6 gf6 18.Qa7–/+) 15...Rc8–+ 16.Rc3 (16.Rc8 Qc8 (16...Bc8?! 17.Qc6 Ng8 18.Bc7+=) 17.Bf6 a6–+) 16...Rc3 17.Bc3 Qb6 (17...Qc7 18.Be2–+) 18.Ne5 (18.Bd4 Qb5 19.Bb5 a6–+) 18...Qb5 19.Bb5 Bd6 (19...Ke7 20.Nd7 Nd7 21.Be2–+) 20.Nd7 Nd7 21.0-0 (21.Bg7 Rg8 22.Bd4–+) 21...f6 22.Rc1 (22.d4 Ke7–+) 22...Ke7 23.Bd4 (23.Bb2 a6 24.Ba4 e5–+) 23...a6 24.Be2 Rc8 25.Rc3 (25.Rc8 Bc8 26.d3 e5–+) 25...Rc3 26.Bc3 Nb6 (26...Nb6 27.d3 e5–+) 0–1. Labahn,Wolfgang – Wieghardt,C, Jugend–BEMS, 1980.

7.d4 Qd6 8.Be2 Bg4 9.Ne5 Be2 10.Qe2 Nf6 11.0-0 Nbd7 12.Nd3 e6 13.Bb2 e5 14.de5 Ne5 15.Ne5 Qe5 16.Nb5 Qe7 17.Bf6 gf6 18.Nd4 Qe5 19.Qf3 Bd6 20.g3 h5 21.h4 0-0-0 22.Rac1 Kb8 23.Rc6 Rc8 24.Rc8 Kc8 25.Rc1 Kb8 26.Nb5 a6 27.Nd6 Qd6 28.Rc5 d4 29.ed4 Qd4 30.Rh5 Rh5 31.Qh5 Qa1 0–1. barborski – mabeji, kurnik, 2013.

7.d4 Nf6 +=.

8.Rc1 +=.

8.Be2 Qd6 9.0-0 Bg4 10.h3 h5 11.b5 (worse is 11.hg4 hg4 12.Nb5 cb5–+) 11...Nbd7 12.a4 (12.hg4? hg4 13.g3 gf3 14.Bf3 Ne5–+) 12...e6 13.Ba3 (13.hg4? hg4 14.g3 gf3 15.Bf3 Ne5–+) 13...Qc7 14.Bf8 (14.hg4? hg4 15.g3 gf3 16.Bf3 Ba3 17.bc6 Bb2 18.cd7 Qd7–+) 14...Kf8 15.d4 (15.bc6 bc6 16.Rc1 Bf3 17.Bf3 g5+=) 15...Bf3–/+ 16.Bf3 g5 17.g3 (17.bc6!? bc6 18.Be2–/+) 17...g4–/+ 18.hg4 h4 19.Kg2 Kg7 (19...h3 20.Kh2–/+) 20.Qd3 Rag8 (20...h3 21.Kh2+=) 21.g5 (better is 21.Rh1!? hg3 22.bc6 Qc6 23.Kg3=) 21...Kf8 22.Ne2 (22.bc6!? bc6 23.gf6 hg3 24.Bd1 Rh2 25.Kf3–+) 22...Rg5–+ 23.Rh1 Kg7 (23...c5 24.dc5 Kg7 25.b6 Qc5 26.ba7 Qa7 27.Rh3–+) 24.Rh3 hg3 (24...e5 25.e4 ed4 26.ed5–+) 25.Rg3 Rg3 26.Ng3 Nf8 27.Rh1 Ng6 28.Rh8 Kh8 29.Be2 cb5 30.ab5 Kg7 31.f4 Qd7 32.Kf2 Ne7 33.Nh5 Nh5 34.Bh5 Nf5 35.Bg4 Nd6 36.Be2 Ne4 37.Kg1 Qe7 38.Bf1 (38.Bf3 Nd6–/+) 38...Qh4–+ 39.Qe2 Kf6 40.Bg2 Kf5 41.Qd3? (better is 41.Bf3!?–+) 41...Qe1 42.Kh2 Kg4 43.Be4 (43.f5 Qg3 44.Kg1 Qf2 45.Kh2–+) 43...Qg3 (43...de4 44.Qc2 Kf3 45.Qg2 Ke3–+) 44.Kh1–/+ de4 (44...de4 45.Qd2 Kf3 46.Qd1 Ke3 47.Qc1 Kf3 48.Qd1 Kf4–+) 0–1. Fournier,Frederic (1875) – Bourbon,Bernard (1885), Club, 2012.

8.h3 a5 A) 9.Qa4 A1) 9...Qd6 10.Be2 (10.Rc1 Nbd7 11.ba5 e5 12.a6 Be7 13.d4 ed4 14.ed4; 10.ba5 Qc7 11.Be2 Ra5 12.Qc2 Nbd7 13.0-0 Ne5 14.Ne5) 10...Nbd7 11.0-0 e5 12.d4 Be7 13.ba5 0-0 14.Rfe1; A2) 9...Nbd7 10.Bd3 (10.ba5 Qf5 11.d4 Qg6 12.Nh4 Qg5 13.Nf3 Qg6 14.Nh4; 10.Be2 Nb6 11.Qb3 ab4 12.ab4 Ra1 13.Ba1 g6 14.0-0) 10...Nb6 11.Qb3 ab4 12.ab4 Ra1 13.Ba1 Qd6 14.Ne2; A3) 9...g6 10.Be2 (10.ba5 Nbd7 11.Be2 Bg7 12.0-0 0-0 13.Rab1 Ne5 14.Ng5; 10.Bd3 Nbd7 11.0-0 Qd6 12.Qc2 e5 13.e4 d4 14.Na4) 10...Nbd7 11.0-0 Bg7 12.ba5 0-0 13.Ng5 Qd6 14.Qb4; A4) 9...Qf5 10.b5 (10.ba5 Nbd7 11.Be2 Nc5 12.Qb4 e5 13.0-0 Bd6 14.a6; 10.d4 Nbd7 11.ba5 e6 12.a6 b5 13.Qd1 Ba6 14.g4) 10...c5 11.Be2 Nbd7 12.b6 c4 13.Nb5 Kd8 14.Bd4; B) 9.b5 B1) 9...Nbd7 10.bc6 (10.Rc1 c5 11.Be2 g6 12.0-0 Bg7 13.Qa4 Qd6 14.Qh4) 10...bc6 11.Rb1 g6 12.Be2 Bg7 13.0-0 0-0 14.Ng5; B2) 9...Qd6 10.d4 (10.bc6 bc6 11.Be2 Nbd7 12.0-0 g6 13.a4 Bg7 14.Ba3; 10.Be2 Nbd7 11.bc6 bc6 12.0-0 g6 13.a4 Bh6 14.Ba3) 10...Nbd7 11.bc6 bc6 12.Rb1 g6 13.Bd3 Bg7 14.0-0; B3) 9...c5 10.Qc2 (10.Na4 Nbd7 11.Be2 Qd6 12.b6 c4 13.d3 cd3 14.Bd3; 10.Bd3 c4 11.Bc2 Nbd7 12.d3 Ne5 13.Ne5 Qe5 14.dc4) 10...Nbd7 11.Be2 g6 12.Ng5 Qd6 13.0-0 Bg7 14.d4; C) 9.d4 C1) 9...Nbd7 10.Bd3 (10.b5 g6 11.bc6 bc6 12.Rb1 Bh6 13.Be2 0-0 14.0-0; 10.ba5 Ra5 11.Rc1 Qd6 12.Qb3 g6 13.Bd3 Bh6 14.Qb4) 10...g6 11.0-0 Bh6 12.Re1 0-0 13.b5 Nb6 14.bc6; C2) 9...Qd6 10.b5 (10.ba5 Ra5 11.Bd3 g6 12.0-0 Bg7 13.a4 0-0 14.Qd2; 10.Be2 ab4 11.ab4 Ra1 12.Qa1 Qb4 13.0-0 e6 14.Rb1) 10...Nbd7 11.bc6 bc6 12.Bd3 c5 13.0-0 c4 14.Bc2; C3) 9...ab4 10.ab4 Ra1 11.Qa1 g6 12.Qa8 Na6 13.Ba6 ba6 14.Na4; C4) 9...g6 10.b5 (10.Bd3 Bh6 11.0-0 Nbd7 12.Qc2 0-0 13.Rfe1 Qd6 14.ba5; 10.Be2 Nbd7 11.0-0 Bh6 12.b5 0-0 13.Rc1 Rd8 14.Na4) 10...Bh6 11.Be2 0-0 12.0-0 Nbd7 13.Rc1 Rd8 14.Na4; D) 9.Be2 D1) 9...Qd6 10.b5 (10.Qa4 Nbd7 11.0-0 e5 12.d4 Be7 13.b5 ed4 14.ed4) 10...c5 11.d4 Nbd7 12.0-0 b6 13.dc5 Nc5 14.Na4; D2) 9...Nbd7 10.0-0 (10.Qb3 ab4 11.ab4 Ra1 12.Ba1 Qd6 13.0-0 e5 14.b5; 10.b5 c5 11.0-0 g6 12.d4 c4 13.Qc2 Bh6 14.h4) 10...ab4 11.ab4 Ra1 12.Qa1 Qd6 13.Qa8 Nb6 14.Qa5; D3) 9...ab4 10.ab4 Ra1 11.Qa1 Nbd7 12.0-0 Qd6 13.b5 c5 14.d4.

8.h3 Qd6 A) 9.Qc2 A1) 9...a5 10.b5 (10.Na4 Nbd7 11.b5 c5 12.Be2 g6 13.b6 Bg7 14.d3; 10.ba5 Nbd7 11.a6 ba6 12.Be2 Rb8 13.a4 g6 14.0-0) 10...Nbd7 11.Be2 c5 12.0-0 g6 13.Qd3 e5 14.Qc2; A2) 9...e5 10.Be2 (10.Nb5 Qd8 11.Nc3 Bd6 12.Be2 Nbd7 13.0-0 0-0 14.e4; 10.Bb5 Nbd7 11.Be2 Be7 12.0-0 0-0 13.d3 h6 14.Na4) 10...Nbd7 11.b5 c5 12.0-0 Be7 13.e4 d4 14.Nd5; A3) 9...Nbd7 10.Be2 (10.Bd3 e5 11.e4 d4 12.Ne2 Be7 13.0-0 0-0 14.Nh4) 10...e5 11.0-0 Be7 12.Na4 0-0 13.d4 ed4 14.Bd4; B) 9.Bd3 B1) 9...a5 10.0-0 (10.Ne2 Nbd7 11.0-0 g6 12.Qc2 Bg7 13.Bc3 0-0 14.Ng3; 10.b5 Nbd7 11.0-0 c5 12.Bc2 Nb6 13.d3 Bd7 14.Qe2) 10...e5 11.Be2 ab4 12.ab4 Ra1 13.Qa1 e4 14.Nd4; B2) 9...Nbd7 10.0-0 (10.Qb3 e5 11.e4 d4 12.Ne2 Nb6 13.0-0 Qc7 14.Ng3; 10.Be2 e5 11.0-0 Be7 12.Na4 0-0 13.d4 e4 14.Ne5) 10...g6 11.Qc2 Bg7 12.e4 d4 13.Nd4 Qd4 14.Nd5; B3) 9...g6 10.0-0 (10.Qc2 Nbd7 11.0-0 Bg7 12.e4 d4 13.Na4 Nh5 14.Rab1; 10.Qe2 Nbd7 11.e4 d4 12.Nb5 cb5 13.e5 Ne5 14.Qe5) 10...Nbd7 11.Qc2 Bg7 12.Na4 0-0 13.Nc5 e5 14.Be2; B4) 9...e5 10.e4 (10.Bc2 Be7 11.0-0 0-0 12.Qe2 Nbd7 13.d3 h6 14.b5) 10...de4 11.Be4 Be7 12.0-0 0-0 13.Re1 Nbd7 14.Bc2; C) 9.d4 C1) 9...Nbd7 10.b5 (10.Bd3 g6 11.0-0 Bg7 12.Qb3 0-0 13.Rfd1 b6 14.a4; 10.Qb3 g6 11.Be2 Bg7 12.0-0 0-0 13.Bd3 b6 14.a4) 10...c5 11.Be2 e6 12.0-0 Be7 13.dc5 Nc5 14.Na4; C2) 9...Bf5 10.Nh4 (10.Be2 Nbd7 11.0-0 g6 12.g4 Be6 13.Bd3 Nb6 14.Ng5; 10.Bd3 g6 11.0-0 Nbd7 12.Re1 Bg7 13.Bf5 gf5 14.b5) 10...Bg6 11.Ng6 hg6 12.Bd3 Nbd7 13.0-0 0-0-0 14.Rc1; C3) 9...a5 10.b5 (10.ba5 Ra5 11.Bd3 g6 12.0-0 Bg7 13.a4 0-0 14.Qd2; 10.Be2 ab4 11.ab4 Ra1 12.Qa1 Qb4 13.0-0 e6 14.Rb1) 10...Nbd7 11.Be2 g6 12.0-0 Bg7 13.bc6 bc6 14.a4; C4) 9...g6 10.Rc1 (10.Bd3 Bf5 11.0-0 Nbd7 12.Na4 Bd3 13.Qd3 Bg7 14.Nc5; 10.Be2 Bg7 11.Bd3 Nbd7 12.0-0 0-0 13.Qb3 b6 14.a4) 10...Bg7 11.Bd3 0-0 12.0-0 Nbd7 13.Qb3 Nb6 14.Ne5; D) 9.Be2 Nbd7 10.Qc2 (10.0-0 g6 11.Qc2 Bg7 12.e4 0-0 13.ed5 Nd5 14.Ne4; 10.Na4 b5 11.Nc5 Nc5 12.bc5 Qc5 13.Rc1 Qd6 14.Ne5) 10...g6 11.e4 Bg7 12.ed5 Nb6 13.dc6 Bf5 14.d3.

8.h3 Nbd7 A) 9.d4 A1) 9...a5 10.Bd3 (10.Be2 g6 11.0-0 Bh6 12.h4 Qd6 13.Ng5 0-0 14.Qb3; 10.b5 g6 11.Ng5 Qd6 12.bc6 bc6 13.Rb1 Bh6 14.h4) 10...g6 11.0-0 Bh6 12.Re1 0-0 13.b5 Nb6 14.bc6; A2) 9...Qd6 10.Bd3 (10.Qc2 g6 11.Bd3 Bh6 12.0-0 0-0 13.Ne2 Nb6 14.Ne5; 10.Be2 g6 11.0-0 Bg7 12.b5 0-0 13.bc6 bc6 14.a4) 10...g6 11.0-0 Bg7 12.Qb3 0-0 13.Rfe1 Nb6 14.b5; A3) 9...g6 10.Bd3 (10.Be2 Bg7 11.0-0 0-0 12.Qb3 Nb6 13.Bd3 Qd6 14.Nd2; 10.Qb3 Bh6 11.Bd3 0-0 12.0-0 a5 13.Rfc1 b6 14.Na4) 10...Bh6 11.0-0 0-0 12.Qb3 b6 13.Bc1 Bg7 14.e4; B) 9.Qb3 B1) 9...Qd6 10.Bd3 (10.d4 a5 11.b5 c5 12.Be2 g6 13.Qd1 c4 14.a4; 10.Be2 g6 11.0-0 Bg7 12.d4 0-0 13.a4 b6 14.Qc2) 10...e5 11.e4 d4 12.Ne2 Nb6 13.0-0 Qc7 14.Rfe1; B2) 9...a5 10.Be2 (10.ba5 Ra5 11.Be2 c5 12.Nb5 Qc6 13.a4 c4 14.Qc2) 10...ab4 11.ab4 Ra1 12.Ba1 Qd6 13.0-0 e5 14.Qc2; B3) 9...g6 10.Bd3 (10.Ng5 Qd6 11.Nce4 Qc7 12.Rc1 Bh6 13.Nf6 Nf6 14.Nf3; 10.Rc1 Qd6 11.d4 Bg7 12.Bd3 a5 13.ba5 Ra5 14.a4) 10...Qd6 11.0-0 Bg7 12.e4 0-0 13.Nd5 Ne4 14.Bg7; C) 9.Bd3 g6 10.0-0 (10.Rc1 Bg7 11.0-0 0-0 12.Qb3 Qd6 13.e4 de4 14.Ne4; 10.Qb3 Qd6 11.0-0 Bg7 12.e4 0-0 13.Nd5 Nd5 14.Bg7) 10...Bg7 11.e4 0-0 12.ed5 Nd5 13.Re1 Nc3 14.Bc3.

9.Qa4 A) 9...Bg7 10.d4 (10.b5 0-0 11.Be2 Nbd7 12.bc6 Qc6 13.Rc1 Qa4 14.Na4; 10.Qb3 Qd6 11.e4 Nbd7 12.ed5 Nb6 13.dc6 Be6 14.Qc2) 10...Qd6 11.Be2 0-0 12.0-0 Bf5 13.g4 Be6 14.Ng5; B) 9...Qd6 10.Bd3 (10.Be2 Nbd7 11.0-0 Bg7 12.b5 0-0 13.bc6 bc6 14.Qh4; 10.g4 Nbd7 11.g5 Nh5 12.Be2 Bg7 13.Qc2 0-0 14.Na4) 10...Bg7 11.Qd1 Nbd7 12.0-0 0-0 13.Be2 e5 14.d4; C) 9...Bh6 10.b5 (10.Be2 0-0 11.b5 Qd6 12.bc6 Nc6 13.Nb5 Qb8 14.0-0; 10.Nd4 Qd6 11.Ncb5 Qd8 12.Nc3 e5 13.Nf3 d4 14.Ne2) 10...Nbd7 11.bc6 bc6 12.Nd4 Nc5 13.Qc6 Qc6 14.Nc6; D) 9...Nbd7 10.Bd3 (10.Qa5 Bg7 11.Bd3 Qd6 12.0-0 0-0 13.Be2 e5 14.d3; 10.Qc2 Bg7 11.Bd3 Qd6 12.0-0 0-0 13.Rfc1 a5 14.Qb3) 10...Bg7 11.0-0 0-0 12.Qb3 Qd6 13.Be2 Nb6 14.d3.

9.Qb3 A) 9...Nbd7 10.Ng5 (10.Bd3 Qd6 11.0-0 Bh6 12.e4 d4 13.Ne2 e5 14.g4; 10.d4 Bh6 11.Bd3 0-0 12.0-0 b6 13.Bc1 Bg7 14.Bd2) 10...Qd6 11.Nce4 Qc7 12.Be2 Bg7 13.Nf6 Nf6 14.f4; B) 9...Qd6 10.e4 Nbd7 11.ed5 Bh6 12.dc6 bc6 13.Be2 0-0 14.Na4; C) 9...Bh6 10.g4 (10.Bd3 0-0 11.g4 Bg7 12.g5 Nh5 13.Na4 Bb2 14.Qb2; 10.Be2 0-0 11.0-0 Nbd7 12.Rfe1 Qd6 13.d4 Nb6 14.b5) 10...0-0 11.Bd3 Bg7 12.Ne2 Nbd7 13.g5 Ne4 14.Nf4; D) 9...Bg7 10.d4 (10.Be2 0-0 11.0-0 Qd6 12.Rfd1 Nbd7 13.d3 Re8 14.a4; 10.Rc1 0-0 11.Be2 Nbd7 12.0-0 Qd6 13.d4 Nb6 14.Bd3) 10...b6 11.Bd3 0-0 12.0-0 Nbd7 13.a4 Bh6 14.e4.

9.Rc1 A) 9...Bg7 10.Na4 (10.Nd4 Qd7 11.Be2 0-0 12.0-0 e5 13.Nb3 Qe7 14.d4; 10.d4 0-0 11.Bd3 Nbd7 12.0-0 a5 13.Qb3 b6 14.Ne2) 10...Nbd7 11.b5 c5 12.Nc5 Nc5 13.Rc5 0-0 14.Rc7; B) 9...Nbd7 10.Qc2 (10.Na4 Qd6 11.Nc5 Bg7 12.Bd3 0-0 13.0-0 e5 14.Be2) 10...Qd6 11.e4 Bh6 12.Nd5 e5 13.Ne3 0-0 14.Nc4.

9.Bd3 A) 9...Bg7 10.0-0 (10.Qb3 0-0 11.0-0 Nbd7 12.Rfe1 Qd6 13.Rac1 a5 14.e4; 10.Na4 Nbd7 11.0-0 Qd6 12.Rc1 e5 13.Be2 0-0 14.Qc2) 10...0-0 11.Qc2 Nbd7 12.Rfe1 c5 13.Be2 Rd8 14.Rac1; B) 9...Qd6 10.0-0 (10.Qe2 e5 11.Rc1 Nbd7 12.e4 d4 13.Na4 Bh6 14.0-0; 10.Qb3 Bg7 11.e4 Nbd7 12.0-0 0-0 13.Nd5 Nd5 14.Bg7) 10...Bg7 11.Qe2 0-0 12.e4 de4 13.Ne4 Ne4 14.Bg7; C) 9...Nbd7 10.Qb3 (10.0-0 Bg7 11.e4 0-0 12.ed5 Nd5 13.Re1 Nc3 14.Bc3; 10.Rc1 Bg7 11.0-0 0-0 12.Na4 a5 13.b5 Qd6 14.Qc2) 10...Qd6 11.0-0 Bg7 12.e4 0-0 13.Nd5 Nd5 14.Bg7.

9.Nd4 Qd6+= 10.Rc1 (10.Be2 Bg7 11.0-0 0-0 12.f4 Nbd7 13.f5 Ne5 14.Qc2; 10.d3 Bg7 11.Be2 0-0 12.0-0 Nbd7 13.Nf3 e5 14.Qb3; 10.Bd3 e5 11.Nb3 Bg7 12.f3 0-0 13.0-0 Nbd7 14.Qe1) 10...a6 (10...e5 11.Nb3 Bg7 12.d4 0-0 13.de5 Qe5 14.Be2) 11.Na4 (11.g4 Bg7 12.g5 Nh5 13.Na4 e5 14.Nb3) 11...Nbd7 12.Nb3 (12.Be2 Bg7 13.Qc2 e5 14.Nf3) 12...Bg7 13.Be2 0-0 14.0-0 (14.Na5–/+) 14...Ne4 15.Bg7 Kg7 16.d3 Nef6 17.f4 Ne8 (17...e5 18.Qe1+=) 18.Qc2 f5 19.Nac5 Nef6 (19...b6 20.Na4 Bb7 21.Qb2 Kg8 22.Rf2+=) 20.e4 (20.Nd4 Nc5 21.bc5 Qc7=) 20...fe4+= 21.de4 Ne4 22.Ne4 de4 23.Rcd1 Qc7 24.Qe4 Nf6 25.Qc2 Be6 (25...e5!? 26.fe5 Qe5+=) 26.Nc5 Bf7 27.Qc3 Kg8 28.f5 Rad8 29.fg6 hg6 30.Bd3 Rd6 31.Rde1 Nd5 32.Qe5 a5 33.Qg3 ab4 34.ab4 Nb4?? (34...b6 35.Ne4 A) 35...Nb4 36.Ng5 (36.Nd6?! Qd6 37.Rf3 Kg7=) 36...Bd5 37.Bg6 Rf1 38.Rf1 Rg6 39.Qc7 Rg5 40.Rf4 Rg2 41.Kf1+–; B) 35...Re6=) 35.Bg6+– Bg6 36.Rf8 Kf8 37.Ne6 Re6 38.Qc7 (better is 38.Rf1 Kg7 39.Qc7+–) 38...Re1–+ 39.Kh2 Nd3 40.Qb7 c5 41.h4 Be4 42.Qb8 Kf7 43.h5?? (better is 43.Qb3 e6 44.Qa2–+) 43...Re2 44.Qb3 (44.Kg1 Rg2 45.Kf1 Rf2 46.Kg1 Rb2–+) 44...Kf6 (better is 44...e6 45.Kg1 Rg2 46.Kf1 Re2 47.Ke2 Nc1 48.Ke3 Nb3 49.Ke4 Kg7–+) 45.Qb8 (45.Kg1–+) 45...Rg2 46.Kh3 Nf2 47.Kh4 Rg4 0–1. De Visser,Arno – Demir, Sas van Gent, 1992.

9.g4 A) 9...Bg7 10.Ne2 0-0 11.Nf4 Qd6 12.Be5 Qd8 13.g5 Ne8 14.Nd3; B) 9...Rg8 10.g5 (10.Nd4 Qd6 11.g5 Nh5 12.Be2 Nd7 13.Rc1 Nb6 14.Ncb5; 10.Bd3 Nbd7 11.Qc2 a5 12.Rc1 Qd6 13.ba5 Ra5 14.0-0) 10...Nh5 11.Na4 Nd7 12.Rc1 Bg7 13.Nd4 Bd4 14.Bd4; C) 9...h6 10.Bd3 (10.Qc2 Nbd7 11.Rc1 Qd6 12.Nb5 Qb8 13.Nbd4 e5 14.Nc6; 10.Rc1 Nbd7 11.Na4 Qd6 12.Nc5 Bg7 13.Bd3 0-0 14.0-0) 10...Bg7 11.0-0 0-0 12.Be2 Nbd7 13.Qb3 b6 14.d4.

9.Ng5 A) 9...Qe5 10.f4 (10.Nf3 Qe6 11.d4 Bg7 12.Bd3 Nbd7 13.0-0 0-0 14.Qb3; 10.h4 Nbd7 11.Be2 Bg7 12.0-0 Qd6 13.Qc2 h6 14.Nf3) 10...Qd6 11.Qb3 Rg8 12.Kf2 Bg7 13.Be2 Bf5 14.g4; B) 9...Qf5 10.f4 (10.Nf3 Qe6 11.Bd3 Nbd7 12.0-0 Bg7 13.e4 0-0 14.ed5; 10.h4 h6 11.Nf3 e5 12.h5 gh5 13.Ne2 Nbd7 14.Ng3) 10...Bg7 11.Ne2 0-0 12.Nd4 Qd7 13.Bd3 h6 14.Ngf3; C) 9...Qd6= 10.Qb3 (10.Be2 Bg7 11.0-0 0-0 12.Qb3 Nbd7 13.d3 Re8 14.d4; 10.Bd3 Nbd7 11.0-0 Ne5 12.Be2 Bf5 13.d3 h6 14.Nf3) 10...Nbd7 11.Nce4 Qc7 12.Rc1 Bg7 13.Nc3 Nb6 14.Bd3.

6.d4 d5+= 7.Nf3 Qh5 8.Be2 Bg4 (8...Qg6 9.Rg1+=) 9.0-0 Nd7 (9...Nf6 10.h3 Bf3 11.Bf3=) 10.e4 (10.b5 e5 11.h3 Bf3 12.Bf3 Qg6=) 10...de4+= 11.Ne4 Ngf6 12.Ng3 Qd5 13.Bb2 (13.h3 Be6+=) 13...h5 (13...e6 14.h3 Bf3 15.Bf3–/+) 14.h3 (14.Qc2 h4 15.Bc4 Qd6+=) 14...Bf3 (14...h4!? 15.Nh1 Bf5–/+) 15.Bf3= Qd6 16.Nh5 0-0-0 (better is 16...Nh5 17.Bh5 g6=) 17.Qb3?? (better is 17.Nf6 Nf6 18.Qb3+=) 17...Nh5–+ (17...Rh5?! 18.Bh5 Nh5 19.Qf7+=) 18.Rfc1 (18.b5 cb5 19.Qb5 Qa6 20.Rfc1 Kb8 21.Qa6 ba6–/+) 18...Kb8 19.a4 (better is 19.b5!? cb5 20.Qf7–+) 19...e6 20.Ba3? (20.b5 cb5 21.ab5–+) 20...Qd4 21.Rd1 Qb6 (21...Qf4 22.b5 c5 23.Bc1–+) 22.Qb2 (22.a5 Qb5 23.a6 Qa6 24.Bh5 Rh5–+) 22...Nhf6 (22...Nf4 23.Rd2–+) 23.a5 (23.b5 Ba3 24.Qa3 cb5–+) 23...Qc7 (23...Qb5 24.Be2 Qg5 25.b5 Ba3 26.Ra3–+) 24.Rac1 a6 25.Qe2 (25.b5 ab5 26.a6 Ba3 (26...ba6?! 27.Rc6 Qb7 28.Bf8 Rdf8 29.Ra1–+) 27.Qa3 Ne5 28.ab7 Kb7–+) 25...g5 (25...Bd6 26.Bc6 bc6 27.Qa6–+) 26.Bb2 (26.Rc4 Bd6–+) 26...g4 (26...Bb4!? 27.Rb1 c5 28.Rdc1–+) 27.Bg4 Rg8 (27...Rh4 28.Rc4 Ng4 29.Rg4 Rg4 30.Qg4–+) 28.Bf3 (28.Bh5 Nh5 29.Qh5 f6–+) 28...Bb4 29.Bc6 (29.Ba1 Qa5 30.Rb1 Nd5–+) 29...bc6 30.Qa6 c5 (30...Nd5 31.Rc6 Qb7 32.Qc4 Ba5 33.Qa6–+) 31.Bd4 (31.Bc3 Qb7 32.Qf1 Rg2 33.Qg2 Rg8 34.Qg8 Ng8–+) 31...Qb7 32.Be5 (32.Qb7 Kb7 33.Bc3–+) 32...Ne5 (32...Ne5 33.Rd8 Rd8–+) 0–1. Trkn – zweitausend, itsyourturn.com, 2000.

6.e4 a5 7.Nf3 Qg4 =.

6.Nf3 Qf6 7.Bb2 d5 8.Nd5! Qb2 9.Nc7 Kd8 10.Na8 +–.

6.Nf3 Qf6 7.Bb2 d6 8.d4 g6 9.Ne4 Qf5 10.Bd3 Qd7 11.d5 cd5 12.Nd6 Qd6 13.Bh8 f6 14.Qb3 e5 15.e4 Be6 16.ed5 Bd5 17.Bc4 Bc4 18.Qc4 Nc6 19.Qg8 0-0-0 20.Qb3 Bh6 21.Bf6 Qf6 22.0-0 Nd4 23.Nd4 ed4 24.Qh3 Kb8 25.Qh6 d3 26.Rfd1 d2 27.Ra2 Qe6 28.Rad2 Qb3 29.Rd8 1–0. kaasparov (1625) – lpka, kurnik, 2014.

6.Nf3 Qf6 7.Bb2 e5 8.Qc2 (8.Ne4 Qg6 9.Bd3 d6+=) 8...d6+/– 9.b5 (9.Bd3 Qh6 10.Nd5 Kd8+/–) 9...Be6 (9...Qg6 10.Qa4=) 10.Ne4 (10.d4 Qg6 11.Qg6 hg6 12.bc6 bc6 (12...Nc6? 13.d5+–) 13.de5 Nd7 14.ed6 Nc5+/–) 10...Qd8 (10...Qg6!? 11.Bd3 Qg2+/–) 11.Neg5+/– Bd7 12.a4 (12.bc6!? Nc6 13.Bc4+/–) 12...h6 13.Ne4 f5 (13...Nf6 14.Nf6 gf6 15.Be2+=) 14.Ng3+/– Qc8 15.Rc1 Be7 16.Bc4 Nf6 17.h3 (17.Bb3 g5+/–) 17...d5 Black prepares e4 (17...cb5!? 18.ab5 d5+=) 18.Be2+/– e4 19.Ne5 0-0 20.Nh5 (20.Ng6 Rf7+/–) 20...Nh5 21.Bh5 (21.Ng6!? Bd6 22.Bh5= (worse is 22.Nf8 Be8–+)) 21...Bf6 (21...Be8!? 22.Be8 Re8+=) 22.Ng6+= Rf7 (better is 22...Be8!? 23.Ba3 Bg6 24.Bg6 Rd8=) 23.Bf6+/– gf6 24.Qc5 Qd8 25.Qd6 Rg7 26.g4 (26.0-0!? a6 27.bc6 Nc6 28.Nf4+/–) 26...fg4 27.hg4 Kh7? (better is 27...Qe8+/–) 28.Nf8+– Kg8 29.Ne6 Qe7 30.Qe7 Re7 31.Nc7 cb5 32.ab5 (32.Nd5?! Rg7 33.ab5 a5 34.Nf6 Kf8+–) 32...a5?? (32...Bb5 33.Nd5 Nc6 34.Rc6 bc6 35.Ne7 Kf8+–) 33.Na8 (33.Na8 Kf8 34.Nb6+–) 1–0. Kasachev,Yuriy – Kazakov,Vasiliy (1735), Astrakhan RUS, Open, 2012.

6.Nf3 Qf6 7.Bb2 e6 8.Qc2 Qd8 9.d4 d5 10.Rc1 Nf6 11.e4 de4 12.Ne4 Be7 13.Bd3 h6 14.0-0 0-0 15.Rfd1 Nd5 16.b5 Nd7 17.bc6 bc6 18.Qc6 N7f6 19.Nf6 Bf6 20.Qa8 Qb6 21.Rc8 1–0. kaasparov – doktormira2, kurnik, 2014.

6.Nf3 Qf6 7.Be2 b5 (7...d5 8.d4=+) 8.Bb2= a5? (better 8...Qg6!?=) 9.Na4 (9.Nb5 Qb2 10.Nc7 Kd8 11.Na8 ab4+–) 9...Qg6 (9...Qd6!? 10.Nb6 Ra6 11.ba5 Qc7+–) 10.Nb6+– Bb7 11.Na8 Ba8 12.0-0 (12.ba5 Nf6+–) 12...e6 (12...a4 13.Qc1 e6 14.Qc3+–) 13.Ne5 (13.ba5 Nf6+–) 13...Qg5 14.ba5 c5 1–0. GuestPKXZ – mbutttttk, freechess.org, 2018.

6.Nf3 Qg4 7.Bb2 d5 8.h3 Qe6 9.d4 b5 10.Nb5 cb5 11.Bb5 Nd7 12.Rc1 Kd8 13.Rc6 Qf5 14.g4 Qf6 15.Rf6 Ngf6 16.g5 Ng8 17.Bc6 Rb8 18.Qa4 Rb6 19.Bd7 Bd7 20.Qa7 Rd6 21.Ne5 f6 22.Qa5 Kc8 23.Qa8 Kc7 24.Qf8 fe5 25.Qg7 ed4 26.Qh8 Rg6 27.Qd4 e6 28.Qc5 Kd8 29.Bg7 Bc8 30.Qf8 Kd7 31.Qf7 Kc6 32.Qg8 Ba6 33.Qe8 Kc7 34.Be5 Kb6 35.Qd7 Bb5 36.Bd4 Ka6 37.Qc8# 1–0. Bonetti,Shane – ProphetX (1745), ICC, 2002.

6.Nf3 Qh6 7.d4 d5 8.Bd3 +/–.

4.c5 Qd8 5.Bb2 f6 6.d4 Bf5 7.e3 e6 8.Bd3 Bg6 9.Bg6 hg6 10.Qg4 Kf7 11.Nd2 Nh6 12.Qe2 f5 13.Ngf3 Nd7 14.0-0 Be7 15.h3 g5 16.Ne5 Ne5 17.de5 g4 18.hg4 Ng4 19.f3 Nh2 20.Rfd1 Bh4 21.e4 fe4 22.fe4 Qg5 23.Nf3 Nf3 24.Qf3 Ke7 25.ed5 cd5 26.Bc1 Qe5 27.Bf4 Qf5 28.Bd6 Kd7 29.Qf5 ef5 30.Rd5 g6 31.Be5 Ke6 32.Rad1 Bf6 33.Rd6 Ke5 34.Re1 Kf4 35.Rf6 Kg5 36.Ree6 Rag8 37.Rf7 Rb8 38.Ree7 b6 39.cb6 ab6 40.Rb7 Rb7 41.Rb7 Ra8 42.Rb6 Ra3 43.Rc6 Rb3 44.Rc4 f4 45.Kh2 Kg4 46.Rd4 g5 47.Rc4 Rb2 48.Kg1 Kh4 49.Kf1 Kg3 50.Rc5 g4 51.Rc3 f3 52.gf3 gf3 53.Rc1 Rb4 54.Kg1 Rb2 55.Rf1 f2 56.Kh1 Rb4 0–1. kaasparov – piotrms, kurnik, 2013.

4.e3 dc4 5.Bc4 a5 6.d4 =.

4.e3 e5 5.c5 Qc7 6.Nf3 a5 7.Bb2= Nd7 8.Be2 Ngf6 9.d4 e4 10.Nfd2 Be7 11.0-0 0-0 12.Nc3 White intends b5 12...Re8 13.b5 Nf8 (13...b6 14.bc6 Qc6 15.Bb5=) 14.Na4 Bf5 15.Nb6 Rab8 (15...Ra7!?+=) 16.Bc3+– N6d7 17.Ba5 Nb6 18.Bb6 Qd7 19.a4 Ng6 20.a5 Nh4 21.a6 (21.Kh1 Ra8+–) 21...ba6+– 22.Ra6 cb5 23.Ra7 Rb7? (better 23...Qc6+–) 24.Bb5!+– (24.Bb5 Ra7 25.Bd7 Rd7 26.Qa4+–) 1–0. guest1581 – guest251, chessclub.com, 2018.

4.e3 Bf5 5.Bb2 Nd7 (5...Nf6 6.Bd4 Qd8 7.Nf3=) 6.Nc3 (6.Bd4 Qc7 7.cd5 cd5+=) 6...e6 (6...dc4 7.Bc4 Ne5 8.Na4=) 7.Nf3 (7.cd5 ed5 8.Nge2 Ne5=) 7...Ngf6 (7...Bd6 8.Be2 dc4 9.e4+/– (9.Bc4?! Ne5 10.Ne5 Be5=)) 8.Be2 (8.Nd4 Bg4 9.f3 e5+=) 8...Be7 (8...dc4 9.Bc4 a5 10.b5=) 9.0-0 (9.cd5 ed5 10.Na4 Qc7=) 9...0-0 (9...dc4 10.Bc4 a5 11.b5=) 10.d4 (10.Nd4 Bg6+=) 10...Rfe8 (10...dc4 11.Bc4 a5 12.b5=) 11.Nh4+= Be4 (11...a5 12.c5 Qc7 13.Nf5 ef5 14.b5+=) 12.f3 Bg6 (12...Bf5 13.Nf5 ef5 14.c5+/–) 13.Ng6+/– hg6 14.c5 (14.Qd3 dc4 15.Qc4 Nd5+=) 14...Qc7+= 15.a4 (15.b5 b6 16.bc6 Qc6+=) 15...Nf8 (15...e5 16.de5 Ne5 17.Qd4+=) 16.b5 Rad8 (16...b6 17.bc6 bc5 18.Bb5+=) 17.Qc2 (17.Qd3 b6 18.cb6 ab6 19.bc6 Qc6+/–) ½–½. Dessing,Bastiaan – Clevers,Egbert, Hengelo U14 open, 2003.

4.e3 Nf6 5.Nf3 Bf5 6.Bb2 e6 7.Nh4 Bg4 (7...Bg6!?+=) 8.f3+– Bh5 9.g4 Bg6 10.Be2 (10.g5 Nfd7+–) 10...Nbd7 (10...dc4 11.Bc4 Nbd7 12.g5=) 11.0-0 (11.g5 Ng8+=) 11...a5 (better 11...dc4!? 12.Bc4 0-0-0=) 12.g5+– Ng8 13.cd5 ed5 (13...cd5 14.Nc3 Ne7 15.f4+–) 14.Bd4 (14.f4 ab4 15.Bd4 Qc7+=) 14...Qc7+= 15.f4 f6 (15...ab4 16.ab4 Ra1 17.Ba1+=) 16.Ng6 (16.Nc3!?+–) 16...hg6 17.Qc2 (17.Bd3 ab4 18.ab4 Ra1 19.Ba1 Bb4 20.Bg6 Kd8=) 17...Kf7 (17...Ne7!?+=) 18.Nc3 Bd6 19.Rac1 Ne7 20.gf6 (20.Nb5!? Qb8 21.Bg4+–) 20...gf6+= 21.Nb5 Qb8 22.Bg4 cb5 23.Bd7 ab4 24.ab4 Bb4 (24...Qd8!? 25.Bb5 Bb4 26.Bf6 Bd2 27.Qd2 Kf6+=) 25.Bf6!+– (25.Bb5?! Qc8 26.Qd1 Nc6=) 25...Bd2?? (25...Kf6 26.Qb2 Double attack (26.Qb2 Decoy)) 26.Qd2+– Kf6 27.Qb2 (27.Bb5?! Qd6+=) 27...Kf7 28.f5 gf5 (28...Ra6 29.Be6 (29.Bb5?! Nf5 30.Ba6 ba6+=) 29...Re6 30.fe6 Kg8 31.Rc2+–) 29.Bf5 Qg8 (29...Rh6 30.Rc8! Qh2 (30...Nc8 31.Bg4 Ke8 32.Qb5 Rc6 33.Qd5 Qh2 34.Kh2 Rc2 35.Kg3 Rg2 36.Kg2 Ra2 37.Kg1 Rg2 38.Kg2 Nd6 39.Qd6 b5 40.Qd7) 31.Qh2 Rh2 32.Ra8 Rd2 33.Bd7 Kg7+–) 30.Kh1 Ra6 (30...Ke8 31.Qb5 Kf7 32.Bh7 Kg7 33.Bg8 Rh2 34.Kh2 Ra2 35.Kh3 Rh2 36.Kh2 Ng8 37.Qd7 Kg6 38.Rg1 Kf6 39.Rg8 Ke5 40.Qe7 Kf5 41.Rf1) 31.Bh7 (31.Bh7 Ke8 32.Bg8 Rah6 33.Qb5 Nc6 34.Bd5 Kd8 35.Bc6 Rh2 36.Kg1 bc6 37.Rfd1 Rd2 38.Rd2 Ke7 39.Qe5 Kf8 40.Qh8 Kf7 41.Rf1 Kg6 42.Rg2) 1–0. DEFFM – GuestLSYW, freechess.org, 2019.

5.Bb2 e5 6.g3 a5 7.Bg2 Na6 8.Qb3 Be6 9.d4 ed4 10.Bd4 Ne7 11.Nf3 Nf5 12.Be5 Qd8 13.0-0 f6 14.Bb2 d4 15.Qd1 ab4 16.ab4 Nb4 17.Ra8 Qa8 18.g4 Nh6 19.Qd4 Na6 20.g5 Nf5 21.Qe4 Nc5 22.Qc2 Qa4 23.Rc1 Qc2 24.Rc2 Nd7 25.e4 Nd6 26.Nd4 Kf7 27.Ne6 Ke6 28.Bh3 Ke7 29.Bd7 Kd7 30.gf6 gf6 31.f3 Rg8 32.Kf2 f5 33.e5 Nb5 34.Nd2 Ke6 35.f4 Bb4 36.Nf3 h6 37.Rc4 Be7 38.h3 Rd8 39.Rc2 Rd3 40.Ke2 Rb3 41.Bd4 Rf3 42.Be3 Rh3 43.Rc4 h5 44.Ra4 h4 45.Ra8 Rg3 46.Rh8 h3 47.Rh6 Kd5 48.Kf2 Re3 49.Ke3 Bc5 50.Kd3 Nc7 51.Rh3 Ne6 52.Rh4 b5 53.Ke2 Ke4 Time forfeit 0-1. Petrovich63 (2125) - Congoman (2210), Rated Blitz game, lichess.org, 2015.

5.e3 e5 6.Bb2 g6 7.f4 Bg7 8.Nf3 f6 9.Be2 Ne7 10.0-0 0-0 11.d3 ef4 12.ef4 Qf4 13.Qd2 Qd2 14.Nbd2 f5 15.Bg7 Kg7 16.Nd4 Re8 17.Bf3 Ng8 18.Rae1 Re1 19.Re1 Kf7 20.b5 Nf6 21.a4 a6 22.N2b3 ab5 23.ab5 Ra3 24.Bd1 Bd7 25.b6 Na6 26.Bc2 Nb4 27.Bb1 Na2 28.h3 Nc3 29.Bc2 Ra2 30.Kh2 Ne8 31.Bb1 Nb1 32.Rb1 Ng7 33.Ra1 Ra1 34.Na1 Ne6 35.Nab3 Nd4 36.Nd4 h6 37.Kg3 g5 38.Kf3 Kf6 39.g3 Be6 40.Nc6 bc6 41.b7 1-0. SSAARR (2025) - Findus (1875), Rated Blitz game, lichess.org, 2014.

5.e3 e5 6.Nf3 Bg4 7.Be2 Nd7 8.Nc3 Ngf6 9.Bb2 e4 10.Nd4 Be2 11.Qe2 Bc5 (better is 11...Ne5 12.0-0 b6+=) 12.bc5+= Nc5 13.0-0 Nd3 14.Rab1 0-0 15.f4 Qd7 16.h3 Rfe8 17.g4 Kf8 18.Nd1 Ng8 19.Nf2 Nb2 20.Rb2 Ne7 21.Kg2 a6 22.g5 c5 23.Nc2 Nf5 24.Qh5 Kg8 25.Ng4 Qc6 26.Ne5 Qc7 27.Rfb1 b5 28.Ne1 d4 29.Kf2 Re5 30.fe5 Qe5 31.Qg4 de3 32.de3 Qh2 33.Ng2 (33.Ng2 Nd6 34.Rd2+–) 1–0. combijack (1780) – chesssebas (1630), gameknot.com, 2011.

5.e3 e5 6.Nf3 Bg4 7.Be2 Be7 8.Bb2= Nd7 9.0-0 f5 (9...Ngf6 10.Nh4 Be2 11.Qe2=) 10.d4 (10.Ne5 Ne5 11.f3 Bf6 12.fg4 Ng4 13.Bg4 Bb2=) 10...e4 11.Ne5 (11.Nfd2 Be2 12.Qe2 Ngf6=) 11...Be2 (11...Ne5 12.de5 Nh6 13.Nd2=) 12.Qe2 Ngf6 13.h3 (13.Nd7 Qd7 14.Nc3 0-0=) 13...0-0 14.Nd2 Ne5 15.de5 Nd7 16.f4 ef3 (16...b6!? 17.cb6 ab6=+) 17.Nf3+= Rae8 18.Nd4 g6 (18...Qb8 19.Nf5 Ne5 20.e4 de4 21.Qe4+=) 19.Ne6+= Qb8 20.Nf8 Bf8 Increasing the pressure on the isolated pawn on e5 21.g4 (21.e4 de4 22.Qc4 Kh8+=) 21...fg4+= 22.Qg4 Ne5 23.Qf4 Bg7 24.Rad1 (24.e4 de4 25.Qe4 Nf7=) 24...Rf8 (24...Nf3 25.Qf3 Bb2 26.Qf7 Kh8 27.Rf3+=) 25.Be5 Rf4?? (better 25...Qe8 26.Qg5 Rf1 27.Kf1 Be5+=) 26.Bb8+– Re4 27.Rd3 (27.Rf3 Re8 28.Bd6 h6+–) 27...Bh6 (27...a6 28.Bd6+–) 28.Rf3 (better 28.Kf2 a6+–) 28...Rc4 (28...a6 29.Bd6+–) 29.Ba7 Rc1 (29...Bg7 30.Bb8+–) 30.Kg2 Rc2 31.Kg3 Rc4 (31...Bg7 32.Bb8 h5 33.e4 de4 34.Rd8 Kh7 35.Rf7 Rc3 36.Kg2+–) 32.Bb8 Bg7 (32...Re4 33.b5!+–) 33.Rf4 Rc1 (33...Rc3 34.Rc3 Bc3 35.Kf3+–) 34.e4 Bh6 (34...Rc3 35.Rc3 Bc3 36.ed5 cd5 37.b5+–) 35.ed5 Bf4 (35...Rg1 36.Kf2 Ra1+–) 36.Bf4 cd5 (36...Re1 37.d6 Re8 38.d7+–) 37.Bc1 1–0. DEFFM – crazytheory, freechess.org, 2018.

5.Bb2 a5 6.Qb3 ab4 7.ab4 Ra1 8.Ba1 e6 9.b5 Bd7 (9...Nd7 10.e3=) 10.e3 (10.Qg3 Nc6 11.Bg7 Bg7 12.Qg7 Qd4 (12...Qb5?? 13.Nc3 Qb2 14.f3+–) 13.Qd4 Nd4=) 10...Nc6 11.Nf3 Na5 12.Qa4 Nc4 (12...f6!?=) 13.Bc4+/– dc4 14.Qc4 (better is 14.Qa8!? Qd8 15.Qb7+/–) 14...Qb5= (worse is 14...Bb5 15.Qc8 Qd8 16.Qb7+/–) 15.Qb5 Bb5 16.Nc3 Ba6 17.Nd4 Be7 18.Ndb5 Bf6 19.Nc7 Kd7 20.Na6 ba6 21.0-0 Ne7 22.Ne4 Ba1 23.Ra1 f5 24.Nc5 Kc6 (better is 24...Kd6!? 25.d4 Ra8 26.Ra6 Ra6 27.Na6 e5 28.de5 Ke5+/–) 25.Ne6+– (25.Na6?! Kd6+/–) 25...Ra8 26.Ng7 a5 27.Ne6 Kd6 28.Nd4 Kc5 29.f4 (29.Ra4 Kb6+–) 29...Nd5? (better is 29...a4+–) 30.Nf5 a4 31.Kf2 Kb4 Black prepares a3 32.Nd4 Kc4 33.Ke2 (33.Ne6 a3+–) 33...a3? (33...Nf4 34.ef4 Kd4 35.Ra3+–) 34.Kd1 (34.Ne6 Kb3 35.e4 Kb2 36.Ra3 Nf4 37.Nf4 Ra3+–) 34...Nb4 Black plans a2 (34...Nf4 35.Nc2 Ng2 36.Ra3 Ra3 37.Na3 Kd5 38.Ke2+–) 35.g3 Kd3 (35...a2 36.f5+–) 36.Nb5 (36.Rc1!? h6 37.Rc3 Ke4+–) 36...a2 37.Nc3 h5 38.h3 Rg8 39.Ke1?? (better is 39.Na2 Na2 40.Ra2 Rg3 41.Ra3 Kc4 42.Rc3 Kb4 43.e4 Rg1 44.Ke2 Rg2 45.Ke1+–) 39...Rg3?? (better is 39...Nc2 40.Kf2 Na1 41.Na2 Kd2–+) 40.Kf2+– Rh3 41.Na2 Na2 (better is 41...Nc2!? 42.Rd1 Rh2 43.Kf3 Rd2 44.Nc1 Kc3+–) 42.Ra2 Rh2 43.Kg3 Rh1 44.f5 Rf1 45.Ra5 Kd2 46.e4 Ke3 47.Ra4 Rf4?? (47...Rg1 48.Kh4 Rh1 49.Kg5 h4+–) 48.Ra3 Ke4 49.Ra4 Kf5 50.Rf4 Kg5 51.Rh4 Kh6 52.Kf4 Kg6 53.Rh2 Kf6 54.Rh5 1–0. avinoam – polams, kurnik, 2012.

5.d4 Nf6 =.

4.Bb2 f6 (5...a5 6.Qa4=) 6.de5 (6.e3 a5+=) 6...de5 7.e3 Be6 8.Nf3 Nd7 9.Bd3 (9.Qc2 c5 10.b5 0-0-0=) 9...Rd8 (9...a5!?=+) 10.Qc2= a5 11.0-0 ab4 12.ab4 Bb4 13.Nc3 g6 14.Na4 (14.Rfd1 Ne7=) 14...Qc7=+ 15.Rfb1 Bd6 (15...b6 16.Be2 Be7 17.Ba3=+) 16.Rd1 Nh6 17.c5 Be7 18.h4 (18.Rd2=+) 18...0-0 (better 18...Nf7!?=+) 19.Bg6= f5 20.Bh5 (20.Ng5 Bg5 21.hg5 hg6 22.gh6 Kh7=) 20...e4 (20...Bd5 21.Ng5+=) 21.Ng5+= Bd5 22.g3 (22.Kh1 Nf6 23.Qc3 f4 24.Rd5 Rd5=) 22...Nf6= 23.Qc3 (23.Be2 Nhg4 24.Rd5 Nd5 25.Ne6 Nge3 26.Qb3+=) 23...Rb8 (better 23...Nhg4!?=) 24.Nb6+– Rfd8 25.Rdb1 Kf8?? (better 25...Rf8+–) 26.Nh7+– Nh7 27.Qg7 1–0. onur604 (2320) – Buschpav08 (2250), lichess.org, 2020.

4.d4 g6 5.Bb2 (better 5.Nf3+=) 5...c5?? (better 5...Nf6=) 6.dc5+– dc5 7.Bh8 Nf6 8.b5 (8.Nc3 cb4 9.Bf6 bc3 10.Bc3 Bf5+–) 8...Bh6 (8...Bf5 9.Nc3+–) 9.e3 (better 9.Nc3+–) 9...e6 (9...Bf5+–) 10.Bf6 e5 (10...Nd7 11.Bc3+–) 11.Be5 Qe6 (11...Nd7 12.Bb2+–) 12.Nf3 Ke7 13.Nc3 Bd7 14.Nd5 Kf8 15.Nc7 b6 16.Ne6 (16.Ne6 fe6 17.Nd2+–) 1–0. DEFFM – GuestSHMG, freechess.org, 2019.

4.e3 a5 5.b5 a4 (5...cb5 6.Nf3=) 6.Bb2 Bd7 (6...Nd7!?+=) 7.Nc3+– Qa5 8.Nf3 e5 9.Qc2 Nf6 10.Be2 Be7 11.h3 (11.0-0!?+–) 11...0-0+= 12.0-0 Be8 (12...Rc8 13.Rac1+=) 13.d3 (better 13.d4!?+–) 13...cb5+= 14.Nd5 (14.cb5!? Bb5 15.Nb5 Qb5 16.d4=) 14...Nd5=+ 15.cd5 Nd7 (15...b4 16.ab4 Qd5 17.Rfc1=+) 16.e4 (16.d4 b4 17.ab4 Qd5 18.de5 Ne5=) 16...Nc5 17.d4 Nb3 18.Rad1 (18.de5 Na1 19.Ra1 f6=) 18...ed4 (18...f6 19.Rfe1–/+) 19.Bd4 (19.Nd4 Nd4 20.Bd4 b4 21.ab4 Qb4=) 19...Nd4 (19...b4 20.ab4 Nd4 21.Rd4=+ (21.ba5?? Nc2 22.Rd2 Nb4–+; worse 21.Nd4 Qb6–/+)) 20.Nd4 Bd7 21.Rb1 The pressure on the backward pawn b5 grows 21...Rac8 (21...Rfc8!? 22.Qd1 Rc5–/+) 22.Qd3= Rc4 23.Qe3 (23.Nb5 Rc5=) 23...Rc5=+ 24.Rb4 Bf6 25.Rfb1 Bd4 26.Qd4 Rfc8 27.e5 (27.f4 f6=+) 27...de5–/+ 28.Qe5 Qb6 29.Qe7 (29.Rd1 Re8 30.Qb2 Qd6 31.Bb5 Rd5 32.Rd5 Re1 (32...Qd5?! 33.Bd7 Qd1 34.Kh2 Qd7 35.Rb7 Qd6 36.g3=) 33.Bf1 Qd5=+) 29...Rd5 30.Bf3 (30.Bc4 Re8 (30...Rc4?! 31.Rc4 Qe6 32.Qe6 fe6 33.Rc7+=) 31.Qe8 Be8 32.Bd5 Qc7–/+) 30...Re8 (30...Rd2!? 31.Qh4–+) 31.Qe8–/+ Be8 32.Bd5 Qc7 33.Bf3 g6 (33...Qc3!?–/+) 34.Be2=+ Qc3 (34...Qc2 35.Bb5 Bc6 36.Re1=+) 35.Bb5= Bb5 36.Rb5 Qa3 37.Rb7 Qc3 (37...Kf8 38.Rd7=) 38.Rf1 (38.R7b2!?=) 38...a3 39.Rbb1?? (better 39.Ra7=+) 39...a2–+ 40.Ra1 Qb2 41.f3 (41.Rfe1 Kg7–+) 41...h5 42.f4 (42.g3 g5–+) 42...Kg7 (42...h4 43.Rfe1–+) 43.Kh2 (43.g3 Kh6–+) 43...h4 44.Kh1 Kf6 45.Kg1 Kf5 46.Kh1 f6 (46...Ke4 47.Rad1–+) 47.Kh2 (47.Kg1 Ke4–+) 47...Ke6 (47...Ke4 48.Rad1–+) 48.Kh1 (48.Rfd1 f5–+) 48...Kf7 (48...Kd5 49.Rac1–+) 49.Kg1 Kg7 50.Kh1 Kh6 51.Kg1 g5 52.fg5 fg5 53.Kh2 Kh5 54.Kh1 g4 55.hg4 Kg4 56.Kg1 (56.Rae1–+) 56...h3 57.gh3 (57.Ra2 Qa2 58.Rf2 h2 59.Kh2 Qf2 60.Kh1 Qf4 61.Kg1 Kg3 62.Kh1 Qc1) 57...Kg3 58.Rae1 (58.Rf3 Kf3 59.Rf1 Kg3 60.Rf3 Kf3 61.Kf1 a1Q) 58…Qg2 0–1. dbinc007 – hippostar (1770), gameknot.com, 2018.

4.d4= Nf6 5.c5 Qc7 6.Bb2 a5 7.Nf3 ab4 8.ab4 Ra1 9.Ba1 b6 10.Qc2 g6 11.e4 Ne4 12.Qe4 Bf5 13.Qe3 Bb1 14.d5 Rg8 15.cb6 Qb7 16.dc6 Nc6 17.Bb5 Bf5 18.Nd4 Bd7 19.Qf3 Nd8 20.Bd7 Qd7 21.0-0 f5 22.Qd5 e6 23.Re1 Kf7 24.Qf3 Bg7 25.g4 Be5 26.Qe3 Bg7 27.gf5 gf5 28.Kh1 Qb7 29.f3 Qb6 30.Qd3 Be5 31.Re5 de5 32.Nb3 Qg1 0–1. kaasparov – humanonly (1650), kurnik, 2014.

4.e3 Nd7 ½–½. Huelle,Gunter (1795) – Dietzel,Uwe, Leipzig VfB op, 2008.

4.e3 e5 5.Nc3 Bf5 (5...Nf6 6.d4=) 6.Nf3 (6.e4 Bg6=) 6...Be7 (6...Nf6 7.d3=) 7.e4 (7.d4 a5+=) 7...Bg4= 8.d3 Nd7 (8...Bh4 9.g3 Be7 10.h3 Bf3 11.Qf3+=) 9.Be3 (9.Be2 Ngf6+=) 9...Qc7 (9...Qd8 10.Be2=) 10.Be2 (10.h3 Bh5+=) 10...Ngf6 (10...f5 11.Ng5 Bg5 12.Bg5 Be2 13.Qe2+=) 11.Qb3 (11.0-0 0-0+=) 11...h6 (11...0-0 12.0-0+=) 12.h3 (12.0-0 0-0+=) 12...Be6 (12...Bf3 13.Bf3 Nh7 14.0-0=) 13.0-0 g5 (13...b5 14.d4 Nb6 15.d5 bc4 16.Bb6 cb3 17.Bc7 cd5 18.ed5 Nd5 19.Nd5 Bd5 20.Rad1+/–) 14.d4 Nf8 (14...g4 15.hg4 Bg4 16.Rfd1+=) 15.Nh2 (15.d5 Bc8+=) 15...Ng6+= 16.Rfd1 (16.d5 Bd7+=) 16...Nf4 17.Bf4 gf4 18.de5 (18.Nf3 Rg8 19.Kh2 0-0-0+=) 18...de5 19.Ng4 (19.Rac1 Bd7+=) 19...Nd7 (19...Ng4 20.Bg4 Bg4 21.hg4+=) 20.Rac1= h5 21.Nh2 Qb6 (21...Bd6=) 22.Qb2 (22.Nd5 Qd8+=) 22...Bh4 (22...Rg8 23.Kf1+=) 23.c5 (23.Bd3 Rg8 24.Nf3 Be7+=) 23...Nc5+= 24.Nd5 (24.bc5 A pinning theme 24...Qb2) 24...Bf2! (24...cd5 25.Rc5 Bf6 26.ed5+/–) 25.Kf1 (25.Kf2 Decoy theme: f2 25...Ne4 Discovered attack) 25...cd5 26.Rc5 (26.Bf3 Bd4 27.Rd4 Na4–+ (27...ed4?! 28.Rc5 de4 29.Qd4–+)) 26...Bc5 27.Qe5 Bg1 (27...Bg1 28.Qf4 de4 29.Bb5 Kf8–+) 0–1. Finenko – Terentiev, Soviet Union, 1987.

5.ba5 Qa5 6.Bd2 Qf5 7.Nf3 Nf6 8.Nc3 e5 9.e4 Ne4 10.Bd3 Nc3 11.Bf5 (< 11.Bc3 e4 12.Qe2 d5 13.cd5 cd5 14.Bb5 Bd7–/+) 11...Nd1 12.Bc8 Nb2 13.Ke2 (13.d5 e4 (< 13...Nc4 14.Bb7 Ra3 15.Ra3 Na3 16.dc6+=) 14.Ng5 Ra7=+) 13...Nc4 –/+.

5.ba5 Ra5 6.Nc3=.

5.c5 Qd8 6.Bb2 (6.Qa4 Nf6 7.Nf3 Na6=) 6...Na6 (6...ab4!? 7.ab4 Ra1 8.Ba1 Na6=+) 7.e4 Bd7 8.Qb3 Nf6 9.Nc3 e6?? (better 9...Nc7!?+=) 10.Nf3 (10.cd6 Bd6 11.e5 ab4 12.ab4 Be7 13.ef6 gf6+–) 10...h6? (better 10...d5 11.ed5 Nd5 12.Nd5 ed5+–) 11.cd6+– ab4 12.ab4 b5 (12...Bd6 13.e5 Be7 14.ef6 gf6 15.Ba6 Ra6 16.0-0+–) 13.e5 Nd5 14.Nd5 ed5 15.Bd3 g5 16.0-0 Bg7 17.Nd2 (17.h3 0-0+–) 17...f5 (17...0-0 18.Ra5+–) 18.Rfe1 Be6 (18...Kf7 19.Bc3 Be6 20.Ra5+–) 19.Ra5 Qc8 (19...Qb6 20.Rea1+–) 20.Rea1 Qb7 21.Qa3 0-0 (21...Bc8 22.e6! Be6 23.Ra6 Ra6 24.Qa6 Qa6 25.Ra6 Kf7+–) 22.Ra6 g4 (22...Ra6 23.Qa6 Qa6 24.Ra6 f4+–) 23.Ra8 Ra8 24.Qa8 Qa8 25.Ra8 (25.Ra8 Kf7 26.Nb3+–) 1–0. DEFFM – GuestHBNP, freechess.org, 2019.

5.Nc3 Bd7? (better 5...cd4!? 6.Nd5 Qd8=) 6.dc5+– dc5 (6...Qc6 7.cd6 Qc4 8.Bb2+–) 7.Nd5 Qc6? (better 7...Qd6 8.Bf4 e5 9.bc5 Qc5 10.Be5 Na6+–) 8.Bf4+– f6 (8...Kd8 9.Nf3 f6+–) 9.b5 Qc8 10.Nc7 Kf7 11.Na8 e5 12.b6 ef4 (12...a6 13.Bd2 Bf5+–) 13.ba7 Qd8 (13...Nc6 14.Nb6 Na7 15.Nc8 Bc8 16.Qd5 Ke8 17.Qe4 Ne7 18.Qf4+–) 14.Nb6! Nc6 (14...Qb6 15.ab8Q Combination) 15.a8Q 1–0. DEFFM – GuestHHWN, freechess.org, 2018.

5.dc5 dc5 6.Be3 e5 7.Qd5 (7.Nc3 Na6=) 7...Nd7 8.Bc5?? (better is 8.Nc3=+) 8...Nc5 (8...Bc5 9.e3–+).

4.Bb2 Nf6 5.e3 d5 6.Nf3+= Nbd7 7.c5 Qc7 8.d4 Be7 9.Bd3 Ne4 10.Nbd2 f5 11.0-0 Bf6 (11...0-0 12.Rc1=) 12.Qc2 (12.Be4 fe4 13.Ng5 Nf8+=) 12...0-0 13.b5 (worse 13.Be4 fe4 (13...de4?! 14.Ne5=) 14.Ne5 Ne5 15.de5 Be5-/+) 13...Re8 14.Be2 (14.Rab1 e5+=) 14...e5= 15.Rfe1 ed4 16.Bd4 Bd4 17.ed4 Qf4 (17...Nf8 18.bc6 bc6 19.Rab1=) 18.Qc1 Ndf6? (18...g6!?+=) 19.bc6 (19.Ne4 Re4 (19...Qe4? 20.bc6 bc6 21.Bb5 cb5 22.Re4 de4 23.Ne5+-) 20.Qf4 Rf4+-) 19...bc6 (19...Nf2 20.Nb3 (20.Kf2? Ng4 21.Kf1 Qe3-+) 20...Qc1 21.Rac1+/- (21.Rec1? Re2 22.cb7 Bb7-+; 21.Nc1?! N2e4+/-)) 20.Ne4+- Re4 (20...Qe4? 21.Bb5! cb5 22.Re4 de4 23.Ne5+-) 21.Qf4 Rf4 22.g3 Re4 23.Bd3 Re8? (better 23...Re6!?+-) 24.Re8 Ne8 25.Ne5 Nc7 26.Re1 Ne6 27.Nc6 Nd4 (27...Kf8+-) 28.Nd4 1-0. onur604 (2320) - Alitet56 (2245), Casual Rapid game, lichess.org, 2021.

4.Nc3 a5 5.c5 Qc7 6.Bb2 Nf6 7.d4 d6 8.e4 Nbd7 (8...ab4 9.ab4 Ra1 10.Ba1 dc5 11.dc5+=) 9.Bd3 (9.cd6 Qd6 10.e5 Ne5 11.de5 Qe5 12.Nge2 ab4 13.ab4 Ra1 14.Qa1 Bb4=) 9...Be7 (9...ab4 10.ab4 Ra1 11.Qa1=) 10.Nge2 (10.cd6 Qd6 11.e5 Ne5 12.de5 Qe5 13.Kf1 ab4 14.ab4 Ra1 15.Ba1 Qd6+/–) 10...b6 (10...ab4 11.ab4 Ra1 12.Ba1=) 11.0-0?? (better is 11.cd6 Bd6 12.e5 Ne5 13.de5 Be5 14.Rc1+–) 11...bc5+= 12.bc5 dc5 13.e5 Nd5 14.Qc2 cd4 (14...Ba6!?–/+) 15.Nd5= ed5 16.e6 (16.Bd4 c5 17.Nf4 Bb7+= (worse is 17...Ne5 18.Nd5 Qd6 19.Bb5 Kf8 20.Ne7+/–)) 16...fe6–/+ 17.Nd4 Ne5 (17...Nc5 18.Bh7 e5 19.Qg6 Kd7 20.Nf5=) 18.Bh7 (18.Nb5 Qb7 19.Be5 cb5 20.Bg7 Rg8+=) 18...Ng4 (18...Rb8!? 19.Rab1 Bd6–/+) 19.Qg6 Attacking the backward pawn on e6 19...Kd8 20.Qg4 Rh7 21.g3 (21.Nf3 Bd6 22.Qg5 Qe7+=) 21...e5 (21...Qd6!? 22.Qg6 Rh3 23.Qg7 c5=) 22.Ne6+= 1–0. mic (2145) – pawnraider (2275), net–chess.com, 2009.

4.Nf3 a5 5.ba5 Ra5 6.e3 Nf6 7.Be2 d5 8.0-0 (8.d4 c5+=) 8...dc4= 9.Bc4 Nbd7 10.Be2 Be7 11.d3 0-0 12.Nbd2 Qc7 13.Nc4 Ra7 14.Bb2 h6 (14...b5 15.Nce5=) 15.Qc2 Rd8 16.Rfc1 Nf8? (16...c5 17.a4+=) 17.a4 (17.Be5 Qd7 18.Nb6 Qe8+/-) 17...b6 (17...N8d7 18.a5+=) 18.Bd4 (18.Be5 Qb7+/-) 18...c5+= 19.Be5 Qb7 20.Rcb1 N6d7 (20...Nd5!?+/-) 21.Bc3+- Ng6 22.Qb2 Ra6 (22...Qa8 23.Ne1+/-) 23.Bg7 f6 24.Bh6 e5 (better 24...Kh7 25.Bf4 Nf4 26.ef4 Qc7+-) 25.e4 Kh7 26.Bd2 Ngf8 (26...Qc6+-) 27.a5 Ne6 28.ab6 (28.ab6 Qc6 29.Ra5+-) 1-0. Braguldo (2130) - jhonores (2190), Rated Blitz game, 2020.

5.Bb2 f6 6.e3 b6 7.Qh5 g6 8.Qf3 Bg7 9.d4 a5 10.Nc3 ab4 11.ab4 Ra1 12.Ba1 b5 13.Bd3 Qd8 14.Nge2 Nh6 15.0-0 0-0 16.Ng3 Nf7 17.Nce4 f5 18.Nd6 Nd6 19.cd6 Na6 20.Bc3 Qg5 21.e4 fe4 22.Qe4 Qd5 23.Qd5 ed5 24.f4 h6 25.f5 g5 26.Nh5 Bb7 27.f6 Bh8 28.Bg6 Nb8 29.f7 Rf7 30.Bf7 Kh7 31.Be8 Kg8 32.Nf6 Bf6 33.Rf6 Kg7 34.Rf7 Kg8 35.Re7 Kf8 36.Bd7 Nd7 37.Rd7 Bc8 38.Rc7 Bf5 39.Rc6 Be4 40.Rb6 Ke8 41.Rb5 Kd7 42.Rb6 h5 43.b5 g4 44.g3 Bf3 45.Kf2 Be4 46.Ke3 Bg2 47.Kf4 Bf1 48.Kg5 Bb5 49.Kh5 Be2 50.Kg5 Bf3 51.Bb4 Be2 52.Bc5 Bf3 53.Rb7 Kc6 54.Rc7 Kb5 55.d7 1–0. avinoam – juro5, kurnik, 2013.

5.e3 a5 6.Bb2 b6 7.Nf3 ab4 8.ab4 Ra1 9.Ba1 bc5 10.bc5 Na6 11.d4 Nf6 12.Be2 d6 13.cd6 Bd6 14.0-0 0-0 15.Nbd2 Nb4 16.e4 Be7 17.e5 (17.Bc3 Rd8+=) 17...Nfd5= 18.Bc4 Ba6 19.Qb3 Rb8 20.Rc1 Nf4 21.Ba6 Na6 22.Qe3 Nd5 23.Qe4 Nab4 24.Nb3 Qa7 25.g3? (25.Rb1 Na2 26.Qd3 Rb5=) 25...Qa3 (better is 25...Na2 26.Rb1 Nac3 27.Bc3 Nc3–+) 26.Rb1+= h6 27.Nfd2 Qa6 28.Nc5 Qa2 29.Ndb3 1–0. avinoam – mikolajm1, playok.com, 2012.

5.e3 b6 6.d4 a5 7.Bb2 ab4 8.ab4 Ra1 9.Ba1 bc5 10.bc5 Nf6 11.Nf3 d6 12.Qc2 dc5 13.dc5 Nbd7 14.Bf6 gf6 15.Be2 Qa5 16.Nbd2 Qc5 17.Qc5 Bc5 18.0-0 Bb4 19.Ne4 f5 20.Neg5 h6 21.Nh3 c5 22.Nf4 Ke7 23.Bc4 Bb7 24.Ne1 Ne5 25.Bb5 Bc6 26.Be2 Rg8 27.g3 Ng6 28.Nfd3 Rb8 29.Nc2 Be4 30.Ncb4 cb4 31.Nc5 Bd5 32.Bd3 Ne5 33.Be2 Nf3 34.Bf3 Bf3 35.Rb1 Bd5 36.Na6 Rb6 37.Nb4 Rb5 38.Rb2 Be4 39.Nc6 Bc6 40.Rd2 Rb1 0–1. avinoam – tyop (1765), kurnik, 2013.

4.Bb2 Ne4 5.e3 f5 (5...d6 6.d4+=) 6.c5 (6.Qh5!? g6 7.Qh4+/–) 6...Qc7 7.Nf3 b6 (7...e6!?+=) 8.cb6 Qb6 9.Nc3 (9.Nh4 Nf6 10.Bf6 ef6 11.Qh5 Ke7 12.Nf5 Kd8 13.Ng7 Bg7+–) 9...d5 10.d3 Nc3 11.Bc3 Nd7 12.Be2 Bb7 13.0-0 0-0-0? (better is 13...c5+/–) 14.Rc1 Nf6 15.Bd4 Qa6 16.Qb3 Kb8 (16...e6 17.Ne5 Rg8 18.b5 Qa3 19.Qc2+–) 17.a4 (better is 17.Rc5 Qb6 18.Ne5 Rc8+–) 17...Bc8? (17...e6+–) 18.b5 Qb7 (18...cb5 19.Ne5 Rd7 20.ab5+–) 19.Rc6 (better is 19.bc6 Rd6 20.cb7 Bb7 21.Be5+–) 19...Bd7 (19...Ng4 20.Ra6 Qd7 21.Ra7+–) 20.Ra6 Rc8 21.Ra7 Qa7 22.Ba7 Ka7 23.d4 Rb8 24.Ne5 e6 25.a5 (better is 25.Qc3 Ba3+–) 25...Ne4 (25...Rc8+–) 26.b6 Kb7 27.Nd7 Rd8 28.Qb5 (28.Ba6 Ka6 29.b7 Bb4 30.Qb4 Rd7 31.Qb6) 28...Nd6 (28...Rc8 29.a6 Ka8 30.b7 Ka7 31.Qb6) 29.a6 (29.Qa6 Kc6 30.Ne5) 29...Ka8 30.Qc6 Nb7 31.Qb7 1–0. Fournier,Frederic (1835) – an3, Active, 2011.

4.Nc3 A) 4...d5 5.Nf3 Bg4 (5...dc4 6.e3 Qa6 7.Qe2 b5 8.Bb2 e5 9.d3 cd3 10.Qd3 Nbd7; 5...a5 6.Na4 Qc7 7.Bb2 ab4 8.cd5 Nd5 9.e4 Nf6 10.Be5 Qa5) 6.Qb3 e6 7.Bb2 Nbd7 8.Na4 Qd8 9.cd5 cd5 10.h3 Bf3; B) 4...Na6 B1) 5.d3 d6 (5...d5 6.c5 Qc7 7.Nf3 Bf5 8.Qb3 0-0-0 9.d4 Ne4 10.Ne5 Nc3; 5...c5 6.b5 Nc7 7.Nf3 a6 8.ba6 Qa6 9.Qb3 d6 10.g3 Bd7; 5...g6 6.Nf3 Bg7 7.Bf4 d6 8.d4 0-0 9.c5 dc5 10.dc5 Qd8) 6.Nf3 Bd7 7.d4 Bf5 8.e3 g6 9.Bd3 Bg7 10.Bf5 gf5; B2) 5.c5 Qc7 6.Nf3 g6 7.d4 Bg7 8.Qb3 0-0 9.b5 cb5 10.Bd2 d6; B3) 5.d4 d5 6.c5 Qc7 7.Nf3 Ne4 8.Ne4 de4 9.Ng5 Bf5 10.Qc2 g6; B4) 5.Qc2 g6 (5...d5 6.Nf3 g6 7.cd5 cd5 8.Ne5 Qe6 9.Qa4 Bd7 10.Nd7 Qd7; 5...c5 6.Na4 Qd6 7.b5 Nc7 8.Nf3 Ne6 9.e3 g6 10.Bb2 Qc7) 6.c5 Qc7 7.Nf3 Bg7 8.e3 0-0 9.d4 d6 10.Bd3 dc5; B5) 5.Nf3 d5 (5...d6 6.d4 Bf5 7.c5 dc5 8.bc5 Qc7 9.g3 0-0-0 10.Bf4 Qa5; 5...c5 6.b5 Nc7 7.Bb2 Qe6 8.e3 d5 9.Be2 dc4 10.Qa4 a6) 6.cd5 cd5 7.e3 Bg4 8.Qa4 Bd7 9.Bb5 Qd6 10.0-0 Nc7; C) 4...d6 5.Nf3 a5 (5...Bg4 6.h3 Bf3 7.gf3 Nbd7 8.d4 g6 9.Bf4 e5 10.Be3 Qc7) 6.c5 Qc7 7.cd6 Qd6 8.b5 Nbd7 9.bc6 bc6 10.d4 Nd5; D) 4...a5 5.c5 (5.Qa4 Na6 6.ba5 Qa7 7.Qc2 Qc5 8.Nf3 Qa5 9.Bb2 Nc5 10.e3 d6; 5.Na4 Qc7 6.c5 ab4 7.Nf3 d5 8.Nb6 Ra5 9.Bb2 ba3 10.Be5 Qd8; 5.b5 d5 6.bc6 Qc6 7.cd5 Nd5 8.Bb2 Nc3 9.Bc3 Qd5 10.Nf3 Nc6) 5...Qc7 6.Qa4 d6 7.Nf3 Nbd7 8.cd6 Qd6 9.ba5 b6 10.Qh4 Ra5.

4.c5 Qd8 A1) 5.Nf3 a5 6.Bb2 ab4 7.ab4 Ra1 8.Ba1 Na6 9.Bf6 ef6 10.Qa4 b5; B) 5.e3 a5 (5...d5 6.Nf3 a5 7.Bb2 ab4 8.ab4 Ra1 9.Ba1 Bg4 10.h3 Bh5; 5...d6 6.Nc3 dc5 7.Nf3 Nbd7 8.Bb2 e6 9.b5 Bd6 10.bc6 bc6) 6.Bb2 ab4 7.Nf3 Nd5 8.e4 Nf6 9.ab4 Ra1 10.Ba1 Ne4; C) 5.Bb2 b6 (5...d6 6.Nf3 dc5 7.bc5 Qa5 8.Nc3 Qc5 9.e4 Bg4 10.Be2 Nbd7) 6.cb6 ab6 7.Nf3 c5 8.Nc3 Nc6 9.e3 Bb7 10.Bc4 e6; D) 5.Nc3 a5 (5...d6 6.Nf3 dc5 7.bc5 Qa5 8.Qb3 Qc5 9.d4 Qb6 10.Qc2 Nbd7; 5...b6 6.Nf3 bc5 7.bc5 Qa5 8.Qb3 Na6 9.Ne5 e6 10.d4 Ne4) 6.Bb2 ab4 7.ab4 Ra1 8.Qa1 d6 9.Nf3 Na6 10.Qa3 e5.

4.Nf3 A) 4...d6 5.Nc3 (5.d4 a5 6.c5 Qd8 7.Qa4 Na6 8.b5 cb5 9.Qb5 Qd7 10.Qc4 Qc6) 5...a5 (5...Bf5 6.Na4 Qc7 7.Nd4 Bg6 8.d3 e5 9.Nf3 Nbd7 10.g3 b5) 6.Qa4 Nbd7 7.d4 Qc7 8.Qb3 ab4 9.Qb4 c5 10.Qb5 cd4; B) 4...d5 B1) 5.c5 Qc7 6.Nc3 Bg4 7.h3 Bf3 8.ef3 Nbd7 9.d4 e5 10.Be2 Be7; B2) 5.Nc3 a5 (5...dc4 6.e3 Be6 7.Ng5 Bd5 8.e4 h6 9.ed5 hg5 10.Bc4 Qd4; 5...Bg4 6.Ne5 Bf5 7.cd5 cd5 8.e3 Nc6 9.Bb5 e6 10.g4 Bg6) 6.c5 Qc7 7.b5 Nbd7 8.d4 e5 9.b6 Qb8 10.g3 Be7; B3) 5.d3 dc4 (5...a5 6.Be3 Qc7 7.Nc3 dc4 8.dc4 Nbd7 9.h3 e6 10.c5 Be7) 6.dc4 Na6 7.Bf4 Nh5 8.Be3 Qc7 9.Nc3 Bf5 10.Qa4 e6; B4) 5.e3 a5 (5...Bg4 6.Nc3 Nbd7 7.Bb2 Bf3 8.Qf3 dc4 9.Ne4 Qb5 10.Nf6 gf6) 6.ba5 Qa5 7.Nc3 Nbd7 8.cd5 Nd5 9.Bb2 Nc3 10.Bc3 Qd5; B5) 5.Bb2 dc4 6.e3 Be6 7.Qc2 a5 8.Bd4 Qb5 9.Nc3 Qa6 10.Ne4 Ne4; C) 4...Na6 C1) 5.Nc3 d6 6.d3 Bf5 7.e4 Bd7 8.Be3 c5 9.b5 Nb8 10.Be2 a6; C2) 5.d4 d6 (5...d5 6.c5 Qd8 7.Nc3 Bf5 8.e3 Nc7 9.Bd3 g6 10.Bf5 gf5) 6.Nc3 Bf5 7.e3 g6 8.Bd3 Bh6 9.e4 Bc1 10.ef5 Bh6; C3) 5.c5 Qc7 (5...Qd8 6.Nc3 d6 7.d4 Bf5 8.Nh4 Be6 9.e4 d5 10.f3 de4) 6.Nc3 g6 7.Bb2 Bg7 8.Ne4 0-0 9.Be5 Qd8 10.Nf6 Bf6; D) 4...a5 D1) 5.Qa4 Ra7 (5...Na6 6.ba5 Nc5 7.ab6 Na4 8.Nc3 Nb6 9.d3 e6 10.e4 Na4) 6.b5 Ne4 7.d4 d5 8.bc6 Qc6 9.Qc6 bc6 10.Nbd2 Rb7; D2) 5.c5 Qd8 6.Nc3 ab4 7.Na4 d6 8.ab4 Nbd7 9.Qc2 Nd5 10.cd6 ed6.

5.c5 Qc7 6.Nf3 ab4 7.Qb3 d6 8.cd6 Qd6 9.Qb4 Qb4 10.ab4 Ra1.

5.e3 ab4 6.c5 Qc5?? 7.ab4+– Ra1 8.bc5 Ra2 9.Qb3 Ra8 10.Bf6 ef6 11.d4 Na6 12.Bc4 d5 13.cd6! Bd6 14.Bf7 Kf8 15.Nf3 Bb4 16.Nbd2 Ke7 17.Bc4 b5 18.Bd3 Be6 19.Qb2 Bd6 20.0-0 Nc7 21.e4 Ra2 22.Qb1 Rha8 23.e5 fe5 24.de5 Bc5 25.Ne4 Bb6 (25...Ba3 26.Nd4 Bd5 27.Nc3+–) 26.Qb4 c5 (26...Ke8 27.Nd6 Kd8 28.Qh4 Kd7 29.Qh7+–) 27.Nc5 Nd5 (27...Ba5 28.Qh4 Kf8 29.Bh7 Bf7+–) 28.Qb5 (better is 28.Qh4 Kf8 29.Ne6 Kf7 30.Neg5 Ke7 31.Nh7 Kd7 32.Bb5 Kc8 33.Qg4 Kb8 34.Qg6 Bf2 35.Rf2 Rf2 36.Qd6 Nc7 37.Bc6+–) 28...R8a5 29.Qb3 Bc5 30.Qb7 Kf8 (30...Bd7 A) 31.Bh7?! Rb5 32.Qd5 Bf2 33.Rf2 Ra1 (33...Rd5?? 34.Ra2 Bg4 35.Ra7 Rd7 36.Rd7 Bd7 37.Be4+–) 34.Rf1 Rf1 (34...Rd5 35.Ra1 Bg4 36.Ra7 Rd7 37.Rd7 Bd7 38.Kf2+–) 35.Kf1 Rd5+=; B) 31.e6 Ke6 32.Re1 Be3 33.fe3+–) 31.Bh7 (31.Ng5 Nf4 32.Bf5 Ra1 33.Ne6 Ne6 34.Qc8 Ke7 35.Qe6 Kf8 36.Qc8 Kf7 37.Qd7 Be7 38.Be6 Kg6 39.Qe7 R5a4+–) 31...Ra8 (31...Nf4 32.Ng5 Bc4+–) 32.Ng5 Nf4 33.Qf3 (33.Qf3 Ke7 34.Ne6 Ne6 35.Qb7 Kf8 36.Bg6+–) 1–0. druhynejhorsi (1775) – alkemisti (1870), kurnik, 2011.

5.e3 ab4 6.c5 Qc7 7.ab4 Ra1 8.Ba1 d6 9.Nf3 dc5 10.bc5 Bg4 11.Be2 Nbd7 12.0-0 Nc5 13.Qc2 e6 14.Be5 Qd7 15.Qb2 Be7 16.Rc1 Nce4 17.h3 Bf3 18.Bf3 Nd6 19.Na3 0-0 20.Rb1 b5 21.Rc1 Rc8 22.Qc3 Nd5 23.Qb2 f6 24.Bd4 Nf5 25.Bc5 Bc5 26.Rc5 Nfe7 27.d4 h6 28.Qc1 Kf7 29.e4 Nb6 30.d5 cd5 31.ed5 Rc5 32.Qc5 Nbd5 33.Qb5 Qb5 34.Nb5 e5 35.Bg4 f5 36.Bh5 g6 37.Bd1 Kf6 38.Kf1 e4 39.g3 Nc6 40.Ke2 Ke5 41.Na3 Nc3 42.Ke1 Nd1 43.Kd1 g5 44.Ke2 Nd4 45.Ke3 f4 46.gf4 gf4 47.Kd2 Nf5 48.Nc4 Kd4 49.Nd6 Nd6 50.Ke2 f3 51.Kd2 Nc4 52.Kc2 e3 53.fe3 Ke3 54.Kd1 f2 55.Kc2 f1Q 56.Kc3 Qd3 57.Kb4 Ne5 58.Kc5 Qd7 59.Kb6 Qc6 60.Ka5 Qb7 61.Ka4 Nc6 62.Ka3 Qb4 63.Ka2 Nd4 64.Ka1 Nb5 65.Ka2 Nc3 66.Ka1 Qb1 0-1. SSAARR (2050) - Porfirios (1950), Rated Blitz game, lichess.org, 2014.

5.e3 ab4 6.c5 Qc7= 7.Nf3 d6 8.ab4 Ra1 9.Ba1 Na6 10.Bf6 ef6.

5.e3 d6 6.Bd4 Qc7 7.Nf3 Nbd7 8.Bf6 Nf6 9.Nc3 g6 10.Bd3 Bg7.

5.b5 a6 6.e3 d6 7.Nf3 g6 (7...ab5 8.Qb3=) 8.Be2 Bg7 9.0-0 0-0 10.d4 Bd7 11.dc5 dc5 12.a4 ab5 13.ab5 Ra1 14.Ba1 Be6 15.Nbd2 Rd8 16.Qc2 Nbd7 17.Ne4 Ne4 18.Qe4 Nf6 19.Qc2 Bf5 20.Qb3 h6 21.h3 g5 22.Rd1 Rd1 23.Qd1 Be6 24.Ne5 Qd6 25.Bf3?? (25.Qb1!?+=) 25...b6 (25...Ne8!?–/+) 26.Nc6 Bc4 27.Qa4 Bd5 28.Qa8 Kh7 29.Be5?? (29.Bf6 Bf6 (worse is 29...ef6 30.Bd5 Qd5 31.Qg8 Kg8 32.Ne7 Kf8 33.Nd5+=) 30.Bd5 Qd5–/+) 29...Qe5!? 30.Ne5 Ba8 31.Ba8 Kg8 0–1. barborski – wolnygracz, kurnik, 2012.

5.b5 d5 (5...d6 6.Nf3 Bf5 7.Bf6 gf6 8.Nc3 Nd7 9.e4 Be6 10.Nd5 Bd5; 5...a6 6.Qa4 d5 7.Nf3 Nbd7 8.e3 Qd6 9.cd5 Nb6 10.Qc2 Nfd5) 6.Nc3 dc4 7.Nf3 a6 8.Qa4 Qd6 9.ba6 Bd7 10.Qc4 Na6.

5.Nf3 cb4 6.Bd4 Qc7 7.ab4 Nc6 8.Na3 Nd4 9.Nd4 e5 10.Nab5 Qb8.

5.Bf6 Qf6 (5...ef6 6.Nc3 Nc6 7.Nd5 Qd8 8.Qb3 Be7 9.Nf3 0-0 10.e3 cb4) 6.Nc3 cb4 7.ab4 Nc6 8.b5 Nb4 9.Ra4 e6 10.Qb1 Qe7.

5.Qc2 a5 (5...c5 6.b5 a6 7.Nc3 ab5 8.Nb5 Be7 9.Rb1 0-0 10.Nf3 Nc6) 6.c5 Qd8 7.Nf3 ab4 8.ab4 Ra1 9.Ba1 Na6 10.Qb3 Nd5.

5.Nc3 a5 6.c5 Qc7 7.Nf3 ab4 8.ab4 Ra1 9.Qa1 Na6 10.Qa4 b5.

5.d4 c5 (5...a5 6.c5 Qc7 7.Nf3 ab4 8.Nbd2 ba3 9.Ba3 b5 10.Ne5 Ra4) 6.Nf3 Nc6 7.d5 ed5 8.cd5 Na5 9.Nbd2 cb4 10.Bd4 Qd8.

5.e3 a5 6.Bf6 gf6 7.c5 (7.Qa4 Ra7 8.b5 cb5 9.cb5 d5+=) 7...Qc7 (7...Qa7!?+=) 8.Nc3+= d6 9.d4 Rg8 10.Nf3 d5 11.g3 e5 12.Bg2 Bg4 13.Qb3 ab4 14.Qb4 b5 15.0-0 Nd7 (15...Na6 16.Qb1=) 16.a4+= ba4 17.Ra4 Ra4 18.Qa4 e4 (18...Qc8 19.Ra1+=) 19.Nd2 Ke7 20.Ra1 Bh6 21.Nb3 Rb8? (better is 21...Rc8+/–) 22.Na5+– Rc8 23.Rb1 f5 (23...Kf8 24.Rb7 Nc5 25.dc5 Qe5 26.Ne4 de4 27.Qe4 Qe4 28.Be4 f5 29.Bc6 Bg5+–) 24.Rb7 (24.Rb7 Qb7 25.Nb7+–) 1–0. druhynejhorsi (1850) – nyeki (1840), kurnik, 2012.

5.Nf3 a5 6.Bd4 c5 7.Bf6 gf6 8.b5 d6 9.Nc3 Nd7 10.Qc2 f5.

5.Nh3 d5 (5...Be7 6.Nc3 Na6 7.c5 Qc7 8.e3 0-0 9.Bd3 d6 10.cd6 Qd6; 5...Na6 6.c5 Qc7 7.Nc3 b6 8.d4 Be7 9.Ng5 0-0 10.e3 h6; 5...c5 6.b5 a6 7.Nc3 ab5 8.Nb5 Nc6 9.e3 Be7 10.Bd3 d5) 6.Nc3 dc4 7.e3 Nbd7 8.Bc4 Bd6 9.f4 a5 10.b5 0-0.

5.Bb2 g6 6.e3 Bg7 7.Nf3 0-0 8.Be2 a5 9.0-0 d6 10.Nc3 ab4 11.ab4 Ra1 12.Qa1 dc5 (12...e5 13.Na2 Nfd7 14.d4+=) 13.bc5 Bg4 14.h3 (14.Ne4 Nbd7+=) 14...Bf3 15.Bf3 Na6 (15...e5 16.Ne4 Ne4 17.Be4+=) 16.d4 (16.Ne4 Ra8 17.Nf6 ef6+–) 16...Nb4 (16...e5 17.de5 Nd7 18.Ne4+=) 17.Qa3 Nd3? (better 17...Na6!?+=) 18.Nb5! cb5 19.Qd3 Qd7 20.Qb3 e6 (20...Ra8 21.Rc1 Ra7 22.Be2+–) 21.Be2 (21.Ra1 Nd5+–) 21...Ne4 (21...b6 22.Bb5 Qc7 23.c6+–) 22.Bb5 (22.Ra1 Qd8 23.Bb5 Qh4+–) 22...Qd5 23.Bc4 Qd7 (23...Qc6 24.Rd1+–) 24.Qc2 (24.Ra1 Qd8 25.Qc2 Qh4+–) 24...Qc6 25.Bd3 Nf6 26.Ra1 Nd5 27.Qb3 f5 (27...b6 28.Ra6 Rb8 29.e4+–) 28.Ra7 Rf7 29.Ra8 (29.Bb5 Qc8+–) 29...Bf8 (29...Rf8 30.Bb5 Qc7 31.Ra7+–) 30.Bb5 Qc7 31.Bc4 Rd7 (31...Qc6 32.Rd8+–) 32.f3 (better 32.Bc3+–) 32...h5?? (32...Qg3+–) 33.e4 Nf4 (33...fe4 34.fe4 Nf4 35.Be6 Ne6 36.Qe6 Rf7 37.Qg6 Rg7 38.Qh5+–) 34.Be6 Ne6 (34...Kg7 35.Bd7 Qd7 36.d5 Kf7 37.c6 bc6 38.dc6 Qe6 39.Rf8 Kf8 40.Qb8 Kf7 41.Qb7 Qe7 42.c7 fe4 43.c8Q Nh3 44.gh3 (44.Qh3?! Qb7 45.Bd4 ef3+–) 44...Qb7 45.Qb7 Ke6 46.fe4 Kd6 47.Ba3 Ke5 48.Kf2 Kd4 49.Qd5 Kc3 50.Ke3 g5 51.Qd3) 35.Qe6 (35.Qe6 Rf7 36.d5 Qc5 37.Kh2+–) 1–0. guest588 – guest118, chessclub.com, 2018.

5.Nc3 a5 (5...d5 6.Nf3 Bg4 7.h3 Bf3 8.ef3 Nbd7 9.d4 e5 10.Be2 Be7; 5...d6 6.cd6 Qd6 7.Nf3 Bg4 8.h3 Bf3 9.gf3 Nbd7 10.d3 Nb6) 6.Qa4 d6 7.cd6 Qd6 8.ba5 Nbd7 9.Nf3 b6 10.Nd4 b5.

5.Nf3 d5 (5...a5 6.Qa4 d6 7.cd6 Qd6 8.ba5 Qc5 9.Nc3 Nbd7 10.Bb2 Ra5; 5...d6 6.cd6 Qd6 7.Nc3 Bg4 8.h3 Bf3 9.gf3 Nbd7 10.d3 Nb6; 5...Na6 6.Nc3 g6 7.Bb2 Bg7 8.Ne4 0-0 9.Be5 Qd8 10.Nf6 Bf6; 5...g6 6.Nc3 Na6 7.Bb2 Bg7 8.Ne4 0-0 9.Be5 Qd8 10.Nf6 Bf6; 5...b5 6.Bb2 a5 7.Be5 d6 8.cd6 ed6 9.Bf6 gf6 10.Nc3 Be6; 5...b6 6.Nc3 bc5 7.bc5 Qa5 8.Rb1 Na6 9.Qa4 Qa4 10.Na4 e5) 6.Nc3 Bg4 7.h3 Bf3 8.ef3 Nbd7 9.d4 e5 10.Be2 Be7.

4.a3 ab4 5.c5? (better is 5.Bb2=) 5...Qc5–+ 6.ab4?? (better is 6.Bb2–+) 6...Qc1 (6...Qc1 7.Qd1 Qd1 (7...Ra1?! 8.Qc1 e6 9.e3+=) 8.Kd1 Ra1–+) 0–1. De Visser,Arno – Khenkin,I (2620), AKN Open, Haarlem NED, 2000.

4.Qa4 Qd4+= 5.Nc3 Qc4 6.ba5 (6.b5 Qb4+=) 6...b5 (6...Qc5 7.Nf3+=) 7.Qc4= bc4 8.e4 Ra5 (8...Ba6 9.Na4=) 9.Bc4+= Ba6?? (better is 9...Na6+=) 10.Rb1+– Bb5 11.a4 (11.Nb5?! cb5 12.Rb5 Rb5 13.Bb5 Nf6+–; 11.Rb5?! cb5 12.Nb5 Nc6=; 11.Bb5?! cb5 12.a4 b4 13.Rb4 Nc6+–) 11...d5 (11...f5 12.ab5 (12.Bb5?! cb5 13.d3 g6+–; 12.Rb5?! cb5 13.Bb5 fe4=; 12.Nb5?! cb5 13.ab5 fe4+–) 12...fe4 13.f3+–) 12.ed5 (12.Nb5?! Nd7 13.ed5 cb5 14.Bb5 Ngf6+–; 12.Rb5?! cb5 13.Bb5 Nd7 14.Nd5 e6+=; 12.ab5?! dc4 13.b6 e6+/–; 12.Bb5?! cb5 13.ed5 Nf6+–) 12...Bc4 13.Rb8 Kd7 14.dc6 Kc6 15.Rc8 (15.Rf8 Bd5 16.Nd5 Kd5+–) 15...Kd7 16.Rc4 e6 17.Nge2 (17.Nb5 Nf6+–) 17...Nf6 18.d4 Nd5 19.Bd2 (better is 19.Bf4 Ra7 20.Nb5+–) 19...Bb4 (19...Nb6 20.Rc5 Bc5+–) 20.Nd5 Bd2 21.Kd2 ed5 22.Rb4 (22.Rb4 Rc8 23.Rhb1+–) 1–0. Herm,Florian – Trimpin,Claus, Baden–ch AT2, 2002.

4.b5 d6 5.e3 Nf6 6.Nf3 Be6 (6...e5 7.Nc3=) 7.Qc2 (7.Nc3 Bg4=) 7...cb5 8.cb5 Nbd7 9.d4 g6 (9...Qd8 10.Bd3=) 10.Nbd2 Bg7 11.Rb1 (11.Be2 0-0=) 11...0-0=+ 12.Bd3 Rac8 13.Qa4 Nd5 (13...Rc3 14.Be2=+) 14.Bb2 (14.Nc4 Qd8 15.Qa5 Ne3 16.Be3 Bc4 17.Qd8 Rfd8 (17...Rcd8?? 18.Bc4 Nb6 19.Bb3+-) 18.Bc4 Rc4=+) 14...Nc3 (14...Nb4 15.Be2-/+) 15.Bc3=+ Rc3 16.Ke2 Rfc8 17.h3 Bf5 (17...Nf6 18.Rhd1 Nd5-+) 18.Bf5= gf5 19.Rhd1 Nf6 20.Nb3 Ne4 21.Kf1 (21.Na5? Rc2 22.Kf1 Rf2 23.Kg1 d5-+) 21...Qc7 (21...Rc2 22.Nbd2=+) 22.Qa5 (22.Na5 Rc2 23.b6 Rf2 24.Kg1-+) 22...Qc4 (better 22...Rc2!?=+) 23.Kg1+/- Rc2 24.b6 (24.Nfd2!? Qe2 25.Ne4 fe4 26.Rf1+/-) 24...Qe2= (worse 24...Nf2 25.Nbd2 Qa2 26.Qa2 Nh3 27.gh3 Ra2 28.Rdc1+-) 25.Rf1 Ra2?? (better 25...Nf2 26.Nfd2 Nd3 27.Qf5 Qe3 28.Kh2 Bd4=) 26.Qe1 (better 26.Qf5 e6 27.Qe4+-) 26...Rcc2?? (better 26...Qe1 27.Rbe1 Ra6-/+) 27.Qe2+/- Re2 28.Ra1?? (better 28.Nc1 Rf2 29.Na2 Ra2 30.Ra1 Ra1 31.Ra1+-) 28...e6 29.Ra2 Ra2 30.h4 (30.d5 Bh6 31.Nc1 Rb2-/+) 30...Ra6 (30...Rb2 31.Na5-/+) 31.Rc1 Rb6 32.Rc8 Bf8 33.Nbd2 Nd2 34.Nd2 Kg7 35.Nc4 (35.Kf1 d5-/+) 35...Rc6 (35...Rb1!? 36.Kh2 d5-+) 36.Rc6-/+ bc6 37.f4 Kf6 38.Kf2 Ke7 39.Ke2 Kd7 40.Kd3 Bg7 41.Kc3 (41.h5 c5-/+) 41...d5 (41...c5 42.Na5-/+) 42.Nd2 (42.Nb6 Kc7 43.Na4 h5-/+) 42...Kd6 (42...c5 43.h5-/+) 43.Nb3-/+ f6 (43...Bf8 44.Nc5-/+) 44.Nc5=+ e5 (44...h5 45.Kb4=+) 45.Nb7 Kc7 (45...Ke7 46.Nc5=+) 46.Nc5 Kd6 47.Nb7 Ke7 48.Nc5 Bh6 49.g3 Bf8 50.Nd3 (50.fe5 fe5 51.de5 Kf7=+) 50...Bg7 (50...e4 51.Nb4 Kd7 52.Nc2-/+) 51.Nc5 Kf7 52.Nd7 Ke6 53.Nc5 Kd6 54.Nb7 Kc7 55.Nc5 Kb6 56.Ne6 Bh6 57.Kb4 ef4 58.ef4 (58.gf4?! Kb7 59.Kc5 Kb8+-) 58...Kb7 59.Kc5 (59.Kc5 Kc8 60.Kc6 Bf4 61.Nf4+-) 1-0. bjoern (2090) - sezwho (2065), Rated Bullet game, lichess.org, 2014.

5.Bb2 Na6 =.

5.Bb2 d5 =.

5.Bb2 d6 6.Bc3 Qc7 7.e3 e5 8.Ne2 Be6 9.Ng3 f5 10.Qc2 Qf7 11.d3 Nf6 12.Nd2 Nbd7 13.Be2 Be7 14.0-0 0-0 15.a4 h5 (15...b6 16.f4 Qg6 17.Rae1=) 16.Bf3 (16.Nf3 Qg6=) 16...g5 (16...h4 17.Nh1=) 17.e4 (17.Rfb1!? g4 18.Be2=) 17...f4+= 18.Nf5 Bf5 19.ef5 Ne8 (19...g4 20.Be2=) 20.d4 Ng7 21.d5 c5 22.Be4 Qf6 23.Rfb1 Rab8 24.a5 g4 25.Rb5 (25.Qa4 Rfd8 26.a6 b6+–) 25...Bd8 (25...Nf5 26.Rab1 Nd4 27.Bd4 cd4 28.Bh7 Kh8 29.Rb7 Rb7 30.Rb7+=) 26.Rab1 (26.Qb1 b6+/–) 26...b6 27.Qa4 Ra8 28.R5b2 Nb8 (28...Ra7!?+/–) 29.Qc2+– Rf7 30.ab6 Rb7 31.Ra2 Ra2 32.Qa2 Bb6? (better is 32...Rb6 33.Qa8 Rb1 34.Nb1 Bc7+/–) 33.Qa8+– Qf7 34.Ba5 (better is 34.Be5 Ne8 35.Bf4+–) 34...Qc7+/– 35.Rb6 (35.Bc2!?+/–) 35...Rb6+= 36.Bb6 Qb6 37.Qa4 Kf7 38.Qb5 (38.Bd3 Ke7+=) 38...Qa7 39.Nb3 (39.Qb1 Nd7+=) 39...Kf6 (39...Ne8 40.Na5=) 40.Na5 h4 (40...Nf5?? 41.Qe8 Kg7 42.Bf5+–) 41.h3 g3 42.f3 Ke7 (42...Nf5? 43.Qe8 Nd7 44.Qe6 Kg7 45.Qf5+–) 43.Qb7 (better is 43.Bc2!?=) 43...Qb7–/+ 44.Nb7 Ne8 (44...Nd7 45.Bc2–/+) 45.Bc2 Na6 46.Ba4 Nf6 47.Kf1 Nb4 48.Ke2 Na2 49.Kd3?? (49.Bc2 Nc3 50.Kf1 e4–/+) 49...Nh7 (better is 49...e4 50.Ke2 Nc3 51.Kf1 Na4 52.fe4 Ne4–+) 50.Kc2–/+ Nf6 51.Kb2?? (better is 51.Kd3=) 51...Nb4–+ 52.Bc2 (52.Kc3 Ne4 53.Kb3 Nd2 54.Kc3–+) 52...Nc2 53.Kc2 e4 54.fe4 Ne4 55.Kd3 f3! (55...f3 56.gf3 g2 57.fe4 g1Q–+) 0–1. Pruvost,Alain – Jimenez,Mart (1795), 8th Open, La Fere FRA, 2009.

5.Bb2 e5 6.e3 =+.

5.Bb2 Nf6 6.Bc3 Qf5 (6...Qa4 7.Nf3=) 7.Nf3 e6 (7...d6 8.d4=) 8.Nd4 (8.d4 d6=) 8...Qg6 9.g3 (9.Nf3 d6=) 9...Na6 10.Bg2 Nc5 (10...d5 11.Nf3=+) 11.Qd1 (11.Qb6 e5 12.Nf3 d6=+) 11...d5 12.d3 (12.Nf3 Nce4=+) 12...Bd6 (12...Na4 13.0-0–/+) 13.a4 (13.Nf3 0-0=+) 13...dc4 (13...e5 14.Nf3 d4 15.Bd2–/+) 14.dc4 (14.Nc6 cd3 15.Nb4 Nd5 16.Nd3 0-0=+) 14...Nfe4 15.Bb2 (15.0-0 0-0–/+ (15...Nc3 16.Nc3 Ke7 17.Bc6=+)) 15...0-0 (15...Ra4 16.Be4 Qe4 17.0-0 Ra1 18.Ba1–/+) 16.0-0 (16.Nc3 Nc3 17.Bc3 Rd8–/+) 16…Rd8 0–1. alexp – pierred, net–chess.com, 2017.

5.Bb2 Nf6 6.Nf3 Na6 7.Nc3 Nc5 8.Qc2 d6 9.e3 g6 10.Be2 (10.d4 Bf5 11.Qd2 Na4=) 10...Bg7 11.0-0 0-0 12.Nh4 (12.Rfb1 Bf5 13.d3 e5=) 12...Na4 (12...e5 13.d4 ed4 14.ed4=) 13.Na4=+ Qa4 14.Qb3 (14.Qa4 Ra4 15.d4 Bg4=+) 14...b5 15.d4 Be6 16.Qa4 Ra4 17.cb5 cb5 18.a3 (18.Rfc1 Rfa8=) 18...Bc4=+ 19.Bc4 bc4 20.Rfc1 (20.Rfb1 d5=+) 20...Rb8 21.Bc3 Nd5 (21...d5 22.Nf3–/+) 22.Kf1 (22.Nf3!?=+) 22...Rb3–/+ 23.Bb4 Nb4 24.ab4 Rbb4 25.Ra4 Ra4 26.Nf3 e6 27.Ke2 (27.Rb1 d5–/+) 27...Ra2–+ 28.Nd2 d5 29.Kd1 (29.Rb1 h6–/+) 29...Bf8 (29...e5 30.de5 Be5 31.Nf3–+) 30.Rc2 Ra4 31.Nf3 f6 32.Ke2 Bb4 33.g4 g5 34.Kd1 (34.h4 gh4 35.Nh4 Bd6–+) 34...Kf7 35.Ke2 Ke7 36.Nd2 Kd6 37.f4 h6 38.Nf3 Ra1 39.Kf2 Kc6 40.Kg2 (40.Ke2 Bd6–+) 40...Kb5 41.Nd2 (41.Kf2 Bd6–+) 41...Bd2 (42.Rd2 c3–+) 0–1. Valles,L – Diaz,R, Alfafar–Ateneo, 1991.

5.Nc3 e5 6.e3 Nf6 7.Nf3 Be7 8.Be2 0-0 9.Bb2 d5 (9...e4 10.Nd4=) 10.cd5 (10.Ne5 dc4 11.Nc4 Qg5+=) 10...Nd5 (better is 10...e4!? 11.Ne5 cd5=) 11.Nd5+/– cd5 12.Ne5 Bb4 13.Bc3 Bc3 14.Qc3 Qc3 15.dc3 Nc6 16.Nc6 bc6 17.c4 Ra3 18.cd5 cd5 19.Kd2 Be6 20.Rhb1 Rfa8 21.Rb2 d4 22.ed4 Ra2 23.Rba2 Ra2 24.Ra2 Ba2 25.Ke3 Bd5 26.Bf3 Ba2 27.d5 Kf8 28.Kd4 Ke7 29.Kc5 Kd7 30.Bg4 Kc7 31.d6 Kd8 32.Kc6 g6 33.f4 f5 34.Bf3 Be6 35.Bd5 Bd7 36.Kc5 h6 37.h4 Be8 38.Bf3 Bf7 39.g4 Be6 40.g5 h5 (40...hg5 41.hg5 Bf7+–) 41.Bd5 Bd7 42.Bf7 Be8 (42...Bc8 43.Bg6 Be6 44.Bh5 Kd7+–) 43.Be8 Ke8 44.Kc6 (44.Kc6 Kd8 45.d7 Ke7 46.Kc7 Kf8 47.Kd6 Kf7 48.d8Q Kg7 49.Qe7 Kh8 50.Ke5 Kg8 51.Kf6 Kh8 52.Qg7#) 1–0. Rush,Bradley – Winter,Malcolm, 65. LSS No Engine Cup Preliminary, 2012.

5.Nf3 e5 =.

6.e3 e5 7.Bb2 Ba3 (7...d6 8.Nf3=) 8.Nf3 (8.Ba3 Qa3 9.Qa3 Ra3=) 8...Bb2 9.Qb2 0-0 (9...d6 10.Bd3=) 10.Be2 d6 11.e4 (11.0-0 Re8=) 11...d5 (11...Nbd7!?+=) 12.cd5 (12.ed5 Re8=) 12...cd5 13.ed5 Nd5 (13...Re8 14.Bb5 Bd7 15.Rb1=) 14.Nd5+= (worse is 14.Ne5 Nf4 15.Qb5 Qd8+=) 14...Qd5 15.Qe5 Qe5 (15...Qd7 16.0-0+/–) 16.Ne5+/– Re8 17.Nc4 (17.d4 Nc6 18.Nc6 bc6+=) 17...Nc6+= 18.Ne3 Nd4 19.Bd3 (better is 19.h4!?+=) 19...Ra3+= 20.Be2 b5 21.Bd1 (21.Kd1 Bd7+=) 21...Be6 (21...Bb7 22.f3–/+) 22.0-0 Ra2 23.Ra2 Ba2 24.Bf3 (24.Nc2 Nc2 25.Bc2 b4–/+) 24...Nf3 25.gf3 b4 26.Rc1 b3 27.Nc4 Rc8 28.Rc3 Rb8 (28...f5 29.Nb2 Rd8 30.d3–/+) 29.Nb2 Bb1 (29...Kf8 30.Kf1–/+) 30.d3 (30.Kf1 Kf8–/+) 30...f6 (30...Kf8 31.Kf1–/+) 31.Kf1 Bc2 (31...Rb7 32.Ke2–/+) 32.Ke2 Ra8 33.Kd2 Ra7 (33...Ra1 34.Rc4–/+) 34.f4 Kf7 35.Rc5 Ke7 36.Kc3 Kd6 (36...Rb7 37.d4–/+) 37.d4 Ra1 (37...Rb7!?–/+) 38.Nc4= Kd7 (38...Ke6 39.Nd2=) 39.f5 (39.Na5 Rd1 40.Rb5 Rd3 41.Kc4 Rf3+=) 39...Rf1 (39...Rh1!?+=) 40.Nb6= Ke7 41.Rc7 Kd6 (41...Kf8 42.Rc8 Kf7 43.Rc7 Kg8 44.Rc8 Kf7 45.Rc7 Kf8 46.Rc8 Ke7 47.Rc7 Ke8 48.Rc8 Ke7 49.Rc7=) 42.Rg7 Rf2 43.Nc4 (43.Nc8 Kd5 44.Ne7 Ke4 45.Rh7 Rf3 46.Kb2 Kd4+=) 43...Kc6 44.Rh7 Bd1 (better is 44...Rf3 45.Kb2 Bf5+=) 45.d5+/– Kb5 (45...Kc5 46.Rc7 Kd5 47.Rd7 Kc5 48.Rd1 Rc2 49.Kb3 Rc4 50.Ra1=) 46.Ne3+– Rf3 47.Kd2 (47.Re7 Kc5 48.Rc7 Kb6 49.Rc6 Kb5+/–) 47...Bc2+/– 48.d6 (48.Ke2 Rf4 49.d6 Kc6 (worse is 49...Bf5 50.d7 Bd7 51.Rd7+/–) 50.Nc2 bc2 51.Rc7 Kd6 52.Rc2 Rf5=) 48...Bf5+= 49.Rb7 (49.Nf5 Rf5 50.d7 Rd5 51.Kc3 Kc6+/–) 49...Kc6= 50.Rb3 Be6 51.Rc3 Kd7 ½–½. Dergatschova Daus,Anna (2220) – Naiditsch,Arkadij (2255), Ruhrgebiet VL2, 1997.

6.e3 e5 7.Bb2 d6 8.Nf3 =.

6.e3 e5 7.Nf3 Na6 8.Qa4 Nc7 (8...Qa4 9.Na4 Nb4 10.Nb6–/+) 9.Qa5= Ra5 10.a4 (10.Bb2 e4 11.Nd4 d5=) 10...Ne6 11.d4 ed4 (11...e4 12.Nd2 Bb4 13.Bb2+=) 12.ed4= Bb4 13.Bd2 0-0 14.Bd3 Re8 15.0-0 Nf4 (15...c5 16.d5 Nf4 17.Bf4 Bc3 18.Ra3=) 16.Bf4 Bc3 17.Rac1 Bb4 18.Bc2 d5 19.Bc7 Ra6 20.c5 Ne4 21.Rb1 Ba5 (21...Bc3 22.Rfc1=) 22.Ba5+= Ra5 23.Rfe1 Kf8 (23...Re7 24.Ne5+=) 24.Re3 Ra7 25.Rbe1 Be6 26.Ra1 (26.Be4 de4 27.Re4 h6+=) 26...Rea8 (26...Bg4 27.Ne5 Re5 28.de5 Nc5 29.a5+=) 27.h3 Ra6 (27...Bf5 28.Rae1+=) 28.Rea3 (28.Rae1 Ke7+=) 28...Ra5 (28...Ke7 29.Re3=) 29.Kf1 (29.Re1 Bf5+=) 29...h6 (29...Ke7 30.Re3=) 30.Ke2 (30.Rb3 R8a7=) 30...Re8 (30...Bf5 31.Re3=) 31.Be4 (31.Re3 Bf5 32.Be4 Be4=) 31...de4= 32.Nd2 (32.Ne5 Rd8 33.Rd1 f6+=) 32...Rd8 33.Ke3 (33.Ne4 Rd4 34.Nd6 Rb4+=) 33...f5 34.f4 (34.Nb3 Ra6=) 34...Kf7 (34...g5 35.fg5 hg5 36.g4 f4 37.Ke4=) 35.Rb1 Rd7 36.Rb6 (36.g4 g6= (worse is 36...fg4 37.hg4 Re7 38.Ne4+/–)) 36...Kf6 37.g3 g5 38.Rb4 (38.Nb3 Bb3 39.Rbb3 gf4 40.gf4 Rg7+=) 38...Rg7 (38...Bd5 39.Rb6+=) 39.Rb6 (39.fg5 hg5 (worse is 39...Rg5 40.Kf4+=) 40.Ra1 Rh7+=) 39...gf4 40.Kf4 h5 (40...Bd5 41.Nb3 Bb3 42.Rbb3=) 41.Nf1 (41.Nb3 Ra6+=) 41...Rd7 42.Rb4 Ra8 43.Ne3 Rad8 (43...Ra5 44.Nf1=) 44.a5= Ra8 45.Nd1 (45.Rb6 Ra6=) 45...h4 46.Rba4 (46.gh4 Rh8 47.Nf2 Rh4 48.Ke3 Bd5–/+) 46...Rg8 (46...Rad8!?–/+) 47.gh4+= Rh8 48.Nf2 Rh4 49.Kg3 (49.Ke3 Bd5+=) 49...Rhh7 (49...f4!? 50.Kg2 Bd5 51.Ng4 Kf5–+) 50.Kh2 (50.a6 ba6 51.Ra6 Bd5+=) 50...Rdg7 (50...Bd5 51.Re3–/+) 51.Rg3 (51.Re3 Bd5–/+) 51...Rg3 (51...Bd5 52.Rg7 Rg7 53.a6 ba6 54.Ra6–+) 52.Kg3 Kg5 (52...e3 53.Nd3–/+) 53.Kh2 (better is 53.h4!? Kh5 54.a6 ba6 55.Ra6–/+) 53...e3–+ 54.Nd3 f4 55.Nf4 Kf4 56.d5 Kf3 (56...Ke5 57.de6 e2 58.Ra1 Ke6 59.Re1=) 57.de6+= e2 (57...e2 58.Ra3 Kf2=). Zylla,Johannes – Lebenstedt, BS–MK Kreisliga, 1994.

6.Nf3 e5 7.g3 (7.e4 Bb4+=) 7...e4 8.Nd4 Qe5 (8...Bc5 9.e3–/+) 9.Nc2 Na6 10.Bg2 (10.Na4 Nc5 11.Nc5 Bc5+=) 10...Bc5 (10...Nc5 11.Qb2+=) 11.0-0 0-0 12.d4 ed3 (worse is 12...Bd4 13.Bf4 (13.Nd4?! Qd4 14.Be3 Qe5=) 13...Qc5 14.Nd4 Qd4 15.Rad1+/–) 13.ed3 Ng4 14.Ne4 (14.Bf4 Qh5 15.h3 Bf2 16.Rf2 Nf2 17.Kf2–/+) 14...d5= 15.cd5 (worse is 15.Nc5 Nc5 16.Qb6 Nd3 17.cd5 cd5–/+) 15...cd5 (15...Qd5? 16.Nf6 Nf6 17.Bd5 Nd5 18.Re1+–) 16.Nc5 Nc5 17.Qd5 Qd5 18.Bd5 Nd3 19.f3 (19.Ne3 Rd8 20.Bg2 h5=) 19...Nf6 20.Bb3 Be6 21.Bg5 Rac8 (21...Nd7 22.Rfd1 Bb3 23.ab3 Ra1 24.Ra1=) 22.Nd4+= Bb3 23.ab3 Nd5 (23...Rfd8 24.Nf5 Rc3 25.Bf6 gf6 26.b4+=) 24.Rfd1 N3b4 25.Nf5 (25.Ra7 Rc7+=) 25...f6 (25...Rc7 26.h3+=) 26.Bd2 Rc5 (26...Rcd8 27.Bb4 Nb4 28.Nd6+=) 27.Ra7+/– Rb8 28.g4 (28.Re1!?+/–) 28...Nc6= 29.Ra2 (29.Ra3 Rd8 30.Rda1 Rc2+=) 29...Ne5 (29...g6 30.Nd6=) 30.Kf2 (30.Kg2 g6 31.Nd4 Re8=) 30...g6 (30...Nc3 31.Bc3 Rc3=) 31.Nd6 (31.Nd4 Nc3 32.Bc3 Rc3=) 31...Rc6 (31...Nc3!? 32.Bc3 Rc3–/+) 32.Ne4= Re8 (32...f5 33.gf5 gf5 34.Rg1 Kh8 35.Ng3 Nd3 36.Kf1=) 33.Ra7 (33.Be1 Nc7+=) 33...Ng4= 34.fg4 Re4 35.Rb7 Rc2 36.Rd7 (36.Kf3 Rd4 37.Ra1 Rc8+=) 36...Rd4= 37.Ke1 Re4 38.Kf1 Rd4 39.Ra1?? (better is 39.Ke1=) 39...Ne3!–+ 40.Be3 Rd7 41.b4 Rh2 42.Rb1 (42.b5 Kf7–+) 42...Rd3 43.Bg1 (43.Bf2 Rd2 44.Bg1 Rb2 45.Rb2 Rb2–+) 43...Rf3 44.Ke1 Rh1 (44...Rg2 45.Bb6–+) 45.Ke2 Rg3 46.Kf2 Rgg1 (46...Rgg1 47.Rg1 Rg1 48.Kg1 Kf7–+; 46...Rg4 47.b5–+) 0–1. Rusanov,Michail (2425) – Aleksandrov,Danila (2230), St Petersburg–ch sf, 2001.

6.Nf3 g6 7.Bb2 Bg7 8.e3 0-0 9.Be2 d6 10.d4 Ne4 11.0-0+= Nc3 12.Bc3 Qa3 13.Bb2 Qb3 14.ab3 Ra1 15.Ra1 c5 16.Ra2 Nc6 17.dc5 Nb4 18.Ra4 Bb2= 19.Rb4 dc5 20.Rb5+= Ba3 21.Ne1 Bf5 22.Rb7+/– Rd8 23.Kf1 Kf8 24.f3 Bb1 25.e4 f5 26.Ra7 Bb4 27.Ra1 (27...Be1 28.Ke1+/– (< 28.Rb1 Bc3+=)) 1–0. Fredek (2065) – CenkovicTomas (1975), Freundschaftspartie, 5m + 0s, 2006.

5.Qb2 cb5 6.cb5 a3 7.Na3 e6 8.Nc4 Qc7 9.e3 d5 10.b6 Qc6 (10...Qd8 11.Ne5+=) 11.Ne5+/- Qc5 12.d4 Qa5 13.Bd2 Qa3 14.Qb5 Nd7 15.Ngf3 Ngf6 16.Bd3 Bd6 17.0-0 0-0 18.Rfc1 Ne5?? (better 18...Rd8+-) 19.de5 (19.Ne5?! Ra4+-) 19...Bd7 (19...Ne4 20.ed6 Nd2 21.Nd2 Qd6 22.Rc7+-) 20.Qb3 (better 20.Qb1 Rfc8+-) 20...Qb3 21.ab3 Ra1 22.Ra1 (22.ed6 Rfa8 23.Rf1 Rf1 24.Kf1 Ra3-/+) 22...Ne4 (22...Bc5 23.ef6 gf6 24.Ra7+-) 23.ed6 Nd2 24.Nd2 Rc8 (24...Rd8 25.Ra7 Bc6 26.b4+-) 25.Kf1 h6 26.Ke2 (26.Ra7 Rb8+-) 26...g5 (26...Rd8 27.Ra7 Bc6 28.b4+-) 27.Ra7 Bc6 28.Nf3 (28.b4 Rd8+-) 28...Rd8 29.Ne5 Rd6 30.Ra8 Kg7 31.Rc8 Kf6 (31...Bd7 32.Rc7 Be8 33.Rb7 Kf8+-) 32.Nc6 Rc6 (32...d4+-) 33.Rc6 bc6 34.b7 e5 35.b8Q h5 36.Ba6 (36.Qd6!? Kg7+-) 36...c5 37.Qd6 Kg7 38.Qe5 Kf8 39.Qd5 Kg7 40.Qc5 (40.Bc4 Kh6 41.Qf7 g4 42.Bd3 Kg5 43.Qe7 Kh6 44.Qf6) 40…Kf6 (40...Kf6 41.Bc4 Kg6 42.Qd5 Kg7 43.Qf7 Kh6 44.Qf8 Kg6 45.Bd3; 40...g4 41.Qd4 Kg6 42.Bd3 f5 43.Qd6 Kg7 44.Qe7 Kg6 45.e4 h4 46.ef5 Kh6 47.Qf6 Kh7 48.Qf8 g3 49.f6). jhonores (2155) – Cesarconga, Daily SuperBlitz Arena, lichess.org, 2020.

5.Qb2 cb5 6.cb5 d5 7.Qc2 Nd7 8.Nc3=.

5.Qb2 cb5 6.cb5 d6 7.e3 (7.Nc3 Nd7=) 7...Nf6 8.Nc3 (8.Qc2 Nbd7=) 8...Nbd7 (8...Bf5 9.Nf3=) 9.d4 e5 10.Nf3 e4 11.Nd2 d5 12.Be2 Bd6 13.0-0 0-0 14.Re1 (14.f3!? ef3 15.Nf3=) 14...Qc7–/+ 15.Rb1 ½–½. Melich,Jindrich (2090) – Gedajlovic,Max (1980), Eretria GRE,1st Open, 2014.

5.Qb2 cb5 6.Qb5 Qb5 7.cb5 d5=.

5.Qb2 d6 6.e3 e5 7.Nf3 Nd7 8.d4 e4 9.Nfd2 f5 10.Be2 Ngf6 11.0-0 c5 12.Rd1 Be7 13.a3 0-0 14.Nc3 Re8 15.Nf1 Nf8 (15...Qc7 16.Qc2=) 16.Qc2 cd4 17.ed4 Ne6 18.Na4 (better 18.Qd2+=) 18...Ra4 (better 18...Qa7 19.Nc3 Nd4=) 19.Qa4+/- Nd4 20.Ng3 (20.Ra2 f4 21.Bf4 Ne2 22.Re2 Bg4+/-) 20...Ne2+/- 21.Ne2 Ng4 22.Rf1 Bf6 Black prepares the advance e3 (22...Bh4 23.g3 Bf6 24.Rb1+=) 23.Ra2+/- e3 24.f3 Ne5 25.Qb3 (25.Rc2 Qc5 26.Bb2 Be6+/-) 25...Be6 Attacking the backward pawn on c4 (25...Qc5 26.Be3 Qc4 27.Qc4 Nc4 28.Bf2+/-) 26.Be3+/- (26.Qe3 Qe3 27.Be3 Bc4-/+) 26...Qc7 27.Rc2 Bc4 28.Qb1 (28.Qb4 d5+=) 28...d5 29.Rfc1 (29.Nf4 Qa5 30.Re1 Nd3 31.Rc4 dc4 32.Nd3 cd3=+) 29...Qd6 (29...Nf3 30.gf3 Re3 31.Qb4-+) 30.Bd4 (30.Nd4 Bd3 31.Rd1 Bc2 32.Qc2 g6=+) 30…Nd3 (30...Nd3 31.Bf6 Nc1 32.Qc1 A) worse 32...gf6 33.Nd4=+; B) 32...Be2?! 33.Bd4 Bb5 34.Rc7 Re1 35.Qe1 Qc7 36.Qe6 Qf7 37.Qc8 Qe8 38.Qe8 Be8 39.Kf2=+; C) worse 32...Re2 C1) worse 33.Rc4 dc4 (33...Qf6?! 34.Rc8 Kf7 35.Kf1=) 34.Qc4 Qe6 35.Qe6 Re6-/+; C2) 33.Re2 Be2 34.Qc8 Qf8 35.Qe6 Qf7 36.Qe2 gf6 37.a4+/-; D) 32...Qf6 33.Rc4 dc4 (33...Re2?! 34.Rc8 Kf7 35.Kf1=) 34.Qc4 Kh8-/+) 0-1. jhonores (2130) - morenol (2195), Rated Blitz game, lichess.org, 2020.

5.Qc2 cb5 6.cb5 Qb5?? 7.Qc8# 1–0. Sopermi (2250) – ZAVALA367 (2135), ajedrez21.com, 2001.

5.Qc2 d6 6.e3 (6.Nc3 Qa5+=) 6...Bd7 (6...Nf6 7.Nc3=) 7.Nc3+= Qa5 (7...cb5 8.cb5 Qc7 9.d4+=) 8.Nf3 Nf6 9.a3 (9.Be2 e6+=) 9...e6 10.Be2 (10.Rb1 cb5 11.Nb5 Be7+=) 10...d5 11.d3 (11.bc6!? Bc6 12.cd5 Nd5 13.Bb2+=) 11...cb5+= 12.cb5 Bb5 13.0-0 (13.Bd2 Bc6+=) 13...Bc6 14.d4 (14.Bd2 Be7+=) 14...Nbd7 (14...Be7 15.Bd2+=) 15.Bd2 Qd8 16.Rfb1 (16.Rfc1 Be7+=) 16...Be7 17.h3 (17.Bd3 0-0+=) 17...0-0 18.Ne5 (18.Bd3!?+=) 18...Ne5–/+ 19.de5 Ne8 (19...Nd7!?–/+) 20.Bd3+= g6 (20...h6 21.Nb5+=) 21.Bb5 Now all is on a4 (21.e4 Rc8+=) 21...d4 (21...Qc7 22.Bc6 Qc6 23.Qb2+=) 22.Bc6 (22.Na4 d3 23.Qc4+=) 22...bc6 (22...dc3 23.Bb7 cd2 24.Ba8 Qa8 25.Qd2+=) 23.ed4 (23.Na4!? c5 24.Rc1+=) 23...Qd4= 24.Bh6 (24.Re1 f5 25.ef6 Bf6=) 24...Ng7+= 25.Rb7 Bh4 26.Rc1 (26.Re1 Rab8 27.Rb8 Rb8 28.Bg7 Kg7 29.Na4 Bg3–/+) 26...Qe5–/+ 27.Na4 Bf2 28.Kf2 Decoy to f2 (28.Qf2 Theme: Deflection from a4 28...Ra4) 28...Qd4 Theme: Double Attack 29.Kf1 (29.Be3 Qa4 30.Qa4 Ra4–/+) 29...Qa4 (29...Ra4!? 30.Qc3 Qc3 31.Rc3 Rd8–/+) 30.Qb2+= Threatening mate... how? 30...Qa3?? (better is 30...e5 31.Qe5 Ne6 32.Bf8 Qa6 33.Kg1 Qb7+=) 31.Qg7 (31.Bg7?! Qb2 32.Bb2 Rfb8 33.Rb8 Rb8+/–) 1–0. Rush,Bradley – Vermaas,Fred, IECG, 2004.

5.Qc2 e6 6.e3 Nf6 7.Nc3 Qa5 8.d4 (8.Nf3 d5=) 8...Ne4 9.Bd2 Nd2 10.Kd2 cb5 11.cb5 d5 12.Bd3 Nd7 13.Nf3 (13.Bh7? Rh7 14.Qh7 Nf6–+) 13...f5 (13...Ba3 14.Rab1=) 14.Ke2 Bb4 (14...Nf6 15.a3=) 15.Rhc1+= Ba3 (15...0-0+=) 16.Rg1?? (better is 16.Nd5 0-0 17.Nc7 Bc1 18.Rc1+– (worse is 18.Na8 Ba3 19.Nc7 Nc5+/–)) 16...Nf6+= 17.Ne5 Bd7 18.Nd7 Kd7 19.b6 Rhc8 (worse is 19...Qb6 20.Na4 Qc6 21.Qc6 Kc6 22.Rgb1+=) 20.Qa4 Qa4 21.Na4 Kd6 22.Nc5 Bc5 23.dc5 Rc5 24.Rgc1? (better is 24.Rgb1+=) 24...Rc1–+ 25.Rc1 Ra2 26.Kf3 (26.Ke1 Rb2–+) 26...Nd7 27.Rc2 (27.Kg3 Nb6 28.Rb1 Kc5–+) 27...Rc2 28.Bc2 Nb6 29.g4 Ke5 (29...fg4 30.Kg4 Nd7 31.Kf3–+) 30.h4 fg4 31.Kg4 h6 32.f4 Kf6 33.e4 de4 34.Be4 Nd5 35.Kg3 (35.Bd3 b6–+) 35...b5 36.Bd3 (36.Bc2 Ne3 37.Bd3 b4–+) 36...b4 37.Bc4 Nb6 (37...Ne3 38.Be2–+) 38.Bb3 Nd7 39.h5 (39.Kf3 Nc5 40.Bd1 b3–+) 39...Nc5 40.Bc2 (40.Bd1 b3–+) 40...b3 41.Bb1 (41.Bg6 e5 42.fe5 Ke5–+) 41...Na4 42.Kf3 Nc3 43.Bg6 b2 0–1. Kalanyos,Ferenc – Szaz,Ferenc (2175), HUN–chT3, 1999.

5.Qc2 Nf6 6.Nc3 a3 (6...cb5 7.cb5 Qc7 8.Nf3=) 7.Rb1 (7.Nf3 e6=) 7...e6 8.bc6 Qc6 9.e4 Bc5 10.Nf3 e5 11.Ne5 Bf2 12.Kf2 (12.Ke2 Qc7 13.Nf3 Bc5+/–) 12...Qc5 13.Ke1 Qe5 14.Rb5 (14.Rb3 Qe7+=) 14...d5 (14...Qe7!?+=) 15.Nd5 Nd5 16.Rd5 (16.cd5 0-0+/–) 16...Qe7 17.d3 (17.Rd3 Nc6 18.Qb3 0-0+=) 17...Nc6+= 18.Qc3 0-0 19.Bd2 (19.Be3 Qc7+/–) 19...f5+= 20.e5 (20.Bf4 Re8 21.Bd6 Qd8+=) 20...Be6 21.Rb5 f4 22.g3 (22.d4 f3 23.gf3 Qh4 24.Kd1 Rf3 25.Qf3=) 22...fg3=+ 23.hg3 Qf7 24.Bf4 g5 25.d4 (25.Bg5 Qf2) 25...gf4 26.Bd3 h5 (26...Nd4 27.Qd4 Rad8 28.Rd5 Bd5 29.cd5 Rd5 30.Qe4 Re5 31.Qe5–+) 27.Be4–/+ Rad8 28.d5 fg3 29.Qg3 Bg4 30.d6 Qf4 31.Bd5 Kh8 32.e6?? (better is 32.Qf4 Rf4 33.e6 Rd6 34.Rb7–+) 32...Qc1# 0–1. Kulbacki,Jim – Schmickt,Bernhard, corr or02–024, 2002.

5.Qd3 cb5= 6.cb5 d6 (6...d5 7.Ba3 Nf6 8.Nc3=) 7.Nf3 Nd7 8.e3 Nc5 (8...Ngf6 9.Nc3=) 9.Qc2 Bd7 (9...Nf6 10.Nc3+=) 10.d4+= Ne6 11.Na3 (11.Nc3+=) 11...Rc8 (11...Nf6!?+=) 12.Qa4+/– Nf6 (12...d5 13.Bd3+/–) 13.Bd3 (13.Nc4 A) 13...Qb5 14.Nd6 ed6 15.Bb5+– (15.Qb5?! Bb5 16.Bb5 Ke7+–); B) 13...Qd8+/–) 13...g6 (13...d5 14.Ne5+/–) 14.Bd2 (14.Nc4 A) 14...Qb5?? 15.Nd6 ed6 16.Bb5+– (16.Qb5?! Bb5 17.Bb5 Ke7+/–); B) 14...Qd8+–) 14...Bg7 (14...d5 15.Ne5+/–) 15.0-0 (15.Nc4!? Qd8 16.0-0+/–) 15...0-0+/– 16.Rab1 (16.Rac1 Ra8 17.Qb3 Rfc8+/–) 16...Ra8+= 17.Qb3 Ra7? (better is 17...Qa7 18.Bb4 Rfc8+=) 18.Nc4+– Qd8 19.a4 b6 20.Rfc1 Qa8?? (better is 20...Ra8+–) 21.Nb6 Qb7 (21...Qb8 22.Nd7 Nd7 23.a5+–) 22.Nd7 Nd7 23.a5 Rb8 (23...Raa8 24.a6 Qb6 25.Rc6+–) 24.a6 (better is 24.b6 Raa8+–) 24...Qb6 (24...Qa8+–) 25.Rc6 Qd8 26.b6 Raa8 (26...Qe8 27.ba7 Rb3 28.Rb3+–) 27.a7 (27.b7!? Ra7 28.Qc4 d5+–) 27...Ra7 (27...Rb6 28.Rb6 Qb6 29.Qb6 Nb6 30.Rb6 Ra7 31.Rb8 Nf8+–) 28.ba7 Rb3 29.Rb3 Qa8 (29...Nef8+–) 30.Rb8! Nb8 31.Rc8 (31.ab8N Qb8 32.Ba6 Nc7–/+) 31...Bf8 32.ab8Q (worse is 32.Rb8 Qa7 33.Rb5 Qa3+=; worse is 32.ab8R Qa1 33.Bf1 d5+–) 32...Qb8 33.Rb8 1–0. algernon (2325) – rbeckett (2100), net–chess.com, 2007.

5.Qd3 d6 6.Nc3 =.

5.Qd3 e6 6.e3 (6.Ba3 Ba3 7.Na3 Nf6=) 6...d5 7.Nf3 (7.Bb2 dc4 8.Qc4 Nf6=) 7...dc4 (7...Nd7 8.Ba3=) 8.Qc4 Bd7 (8...Qb5 9.Qb5 cb5 10.Bb5 Bd7 11.Be2=) 9.Nc3 cb5 (9...Nf6 10.Na4 Qb5 11.Qb5 cb5 12.Nb6+=) 10.Nb5+= Qb5 (10...Nc6 11.Qf4 Rc8 12.Qa4+=) 11.Qb5 Bb5 12.Bb5 Nc6 (12...Kd8 13.Rb1+=) 13.Ne5 Nge7 14.Ba3 f6 15.Be7 fe5 16.Bf8 Rf8 17.Rc1 Kd7 18.Ke2 (18.d3 Ra5 19.Rb1 Rc8+=) 18...Ra5 (18...Rf5 19.Bd3 Rh5 20.Rb1+/–) 19.Bc6 (19.Rb1 e4+/–) 19...bc6+= 20.Rc4 Rb8 21.Rhc1 Exerts pressure on the isolated pawn 21...Ra6 (21...Rb2 22.Rc6 Ra2 23.Rc7 Kd8 24.e4+/–) 22.Kd3 (22.a3 h5+=) 22...Kd6 (22...a3 23.Ke4+=) 23.Kc2 (23.a3 Rb2+=) 23...a3= 24.Rb1 (24.Kd3 Rb2 25.R1c2 Rab6+=) 24...Rab6 (24...Rb1 25.Kb1 e4 26.Rb4=) 25.Rb3 (25.Rb6 Rb6 26.Kc1 Rb2+=) 25...Rb3+= 26.ab3 a2 (26...Rb5 27.Ra4 e4 28.Ra3+=) 27.Ra4+= Rf8 28.f3 (worse is 28.Ra2 Rf2 29.g3 Rh2–/+) 28...e4 29.f4 (29.fe4 Rf2 30.Ra2 Rg2+=) 29...e5 30.g3 ef4 31.gf4 Rf5 32.Ra2 Rh5 (32...g5 33.fg5 Rg5 34.Ra4+/–) 33.Ra4+/– Rh2 34.Re4 (34.Rd4 Ke6+/–) 34...g6 (34...Rf2 35.Kc3+/–) 35.Kd3 (35.Kc3 Rh3+/–) 35...c5 (35...h6 36.Rd4 Kc7 37.Ra4+/–) 36.b4 cb4 37.Rb4 Rg2 38.Rd4 (38.e4 g5 39.e5 Kd5 40.Rd4 Kc5+–) 38...Ke6 39.Ke4 (39.Re4 Kf6+/–) 39...h5 40.Kf3 Rg1 (40...Rh2 41.Rd8+/–) 41.Re4 Kf6 42.Re5 (42.Rb4 h4 43.d4 Rg3 44.Ke4 h3 45.Rb6 Ke7 46.Rb7 Kd6+–) 42...h4 43.Kf2 Rg4 44.Ra5 (44.Re8 Kf7 45.Rb8 g5+/–) 44...h3 45.Ra6 Kg7 (45...Kf7 46.d4+/–) 46.Ra7 Kg8 47.Ra8 (47.d4 g5 48.fg5 Rg5+/–) 47...Kg7 48.d4 Rg2 (48...g5 49.Ra7 Kg6 50.Kf3–/+) 49.Kf3 Rd2 (49...g5 50.fg5 Rg5 51.Ra2+–) 50.Ra1 h2 51.Rh1 Kf6 52.e4 Rd3 (52...Ke6 53.d5 Kd6 54.Kg3+–) 53.Kg4 Rd2 54.d5 Re2 (54...Ke7 55.Kg3 Rd4 56.Kf3 Rd3 57.Kf2 Rd2 58.Ke3+–) 55.e5 Ke7 56.Kh3 Re4 (56...Re3 57.Kh2 g5 58.Kg2 gf4 59.Rh7 Ke8 60.Rh8 Kd7 61.e6 Kd6 62.Rd8 Ke7 63.Rd7 Ke8 64.Kf2+–) 57.Kg3 (57.Rh2!? Rf4 58.Rb2 Rf5+–) 57...g5 58.Rh2?? (58.Kh2 gf4 59.Kg2 Re5 60.Kf3=) ½–½. Zapf – Hess, corr FD89/04/191, 1988.

5.Qg3 cb5 6.Nc3 e6 (6...Na6 7.cb5 Nb4 8.Rb1=) 7.Nb5+= Na6 8.e3 d5 9.cd5 ed5 10.Nf3 Nf6 11.Bb2 Bd7 12.Bd4 Nc5?? (better 12...Qe6+=) 13.Nc7+- Kd8 14.Na8 (14.Na8 Qd6 15.Rb1 Qg3 16.hg3+-) 1-0. onur604 (2320) - Gataca2 (2215), Casual Rapid game, lichess.org, 2021.

6.a3 d6 7.e3 e5 8.Nf3 Be7 9.d4 e4 10.Nfd2 0-0 11.Be2 Bf5 12.0-0 Nbd7 13.Nc3 d5 14.Rb1 Qc7 15.Qa2 (15.b6 Qb8 16.Qc2+=) 15...h6 (better 15...Bd6!?=) 16.cd5+/- cd5 17.Nd5 Nd5 18.Qd5 Bg6 19.Qa2 (19.Ne4? Nb6 20.Qe5 Qe5 21.de5 Be4-+) 19...Rfc8 20.Nc4 Nf6 (20...Bf5 21.Bb2+/-) 21.Bb2 (21.b6 Qd8 22.Ne5 Kh7+-) 21...Ng4 (21...Bf5 22.Rbc1 Be6 23.Qb1+/-) 22.g3 (22.Bg4 Qc4 23.Qc4 Rc4+/-) 22...h5 23.Rfc1 Qd8 24.Bg4 (24.h3 Nh6+-) 24...hg4 25.Ne5 Kh7 26.Ng4 (26.Rc8 Rc8 27.Rc1 Rc1 28.Bc1 Qc8+/-) 26...Qd7 (26...Bf5!? 27.h3 Be6+=) 27.Ne5+/- Qh3? (better 27...Qb5 28.Bc3 Qa6+/-) 28.Ng6 (28.Qd5!? Qe6 29.Qb7 Rab8+-) 28...Kg6 29.Qd5 Rcb8?? (29...Rc1 30.Rc1 f5+-) 30.Qe4 f5 (30...Qf5 31.Qe7 Qb5+-) 31.Qg2 (better 31.Qe7 Rh8 32.Qe6 Kg5 33.f4 Kh5+-) 31...Qh5 (31...Qg2 32.Kg2 Bd6 33.Kf3+-) 32.Rc7 Bf6 33.Rbc1 (33.Qd5 b6+-) 33...b6 (33...Qe2 34.Qd5 Qb2 35.g4+-) 34.Rd7 (34.Qc6!? Rh8 35.h4 Qe2+-) 34...Rc8 (34...Qe2 35.Rb1 Ra5 36.Qf1 Qb5 37.Rd6 Qf1 38.Kf1+-) 35.Rcc7 (35.Rc6!? Qe2 36.Bc1 Qb5 37.Rg7 Kg7 38.Rc8 Rc8 39.Qb7 Be7 40.Qc8 Qb1+-) 35...Rc7 36.Rc7 Rd8 (36...Qd1 37.Qf1 Qf1 38.Kf1+-) 37.Rc6 (37.Qf1 Rh8 38.h3 Qh3 39.Qh3 Rh3+-) 37...Kh7? (37...Qe2 38.Bc3 Qb5+-) 38.Qf1 Qf3 39.Rc1 (39.Rb6!? Rc8+-) 39...Rd7 40.Qd1 (better 40.Rc4 Ra7+-) 40...Qe4? (40...Qd1 41.Rd1 Rd5+-) 41.Qh5 (41.Qh5 Kg8 42.d5+-) 1-0. jhonores (2200) - SerVIz (2195), Rated Bullet game, lichess.org, 2020.

6.e3 cb5 7.Qb5 Qb5 8.cb5 d5 9.Ba3 Nbd7 10.Nc3 e5 11.Bf8 Nf8 12.Nf3 Ng6 13.h4 (13.d4 e4 14.Ne5 Be6=) 13...Bg4 14.Be2 0-0 (14...e4 15.Nd4 Be2 16.Ke2=) 15.Ng5 (15.d4 e4 16.Ne5 Be2 17.Ng6 hg6 18.Ke2 Rfc8+=) 15...Be2+= 16.Ke2 d4 (16...h5 17.Rac1+=) 17.Nce4 Ne4 18.Ne4 f5 19.Nd6 d3 20.Kf1 (20.Ke1 Rf6 21.Nb7 Rc8–/+) 20...e4 21.f4 (better is 21.Nb7 Ne5 22.Ke1+=) 21...Rfd8?? (better is 21...Rf6 22.Nc4 Rc8–/+) 22.Nf5+= (worse is 22.Nb7 Rd5 23.Rc1 Rb5–+) 22...Rac8 (22...Rd5 23.g4 h5 24.Ng3 hg4 25.h5+=) 23.h5+/– Rd5 24.g4 Rf5 25.gf5 (25.hg6?! Rb5 26.gh7 Kh8=) 25...Ne7 26.Kf2 Nf5? (better is 26...Rc2 27.Rhd1 Nf5+/–) 27.Rac1+– Rc1 (27...Rf8 28.Rc4 Nd6 29.Rd4+–) 28.Rc1 Nd6 29.Rc7 Nb5 30.Rb7 Nd6 31.Ra7 a3 32.Ra3 Nc4 33.Ra8 Kf7 34.Ke1 Ke6 (34...Nd6 35.a4 Ke7 36.a5+–) 35.Ra7 (35.Re8 Kf5+–) 35...Kf5 (35...Kf6+–) 36.Rg7 1–0. katchum (2475) – pawnraider (2235), net–chess.com, 2012.

6.e3 d6 7.bc6 Qb2 8.Bb2 Nc6 9.Bf6 gf6 10.Nc3 +=.

6.e3 d6 7.Nf3 e5 8.a3 Bg4 (8...e4 9.Nd4 c5 10.Ne2=) 9.Be2 (9.bc6 Qb2 10.Bb2 bc6=) 9...Be7 (9...Nbd7 10.h3 Bf3 11.Bf3=) 10.d4 e4 11.Nfd2 Be2 12.Ke2 0-0 (12...d5 13.bc6 Qc6 14.cd5 Nd5 15.Ne4 Nf4 16.ef4 Qe4 17.Kf1 Qd3 18.Ke1=+) 13.Nc3 d5 14.bc6 Qb2 15.Bb2 bc6 16.c5 Nbd7 17.Rhb1 Rab8 (17...Rfe8 18.f3 Bd8 19.fe4 de4 20.Nc4+=) 18.Bc1 (18.Na4 Rb7+/-) 18...Ng4 (better 18...Bc5!? 19.dc5 Nc5+/-) 19.h3+- Nh6 20.Rb8 (20.Na4!? Rfc8+-) 20...Rb8+/- 21.Rb1 (better 21.Na4 f5 22.Nb2+/-) 21...Ra8? (better 21...Rb1 22.Ndb1 Bc5 23.dc5 Nc5+/-) 22.Rb7+- Rd8 23.Na4 f5 (23...Kf8 24.Nb6 Ke8 25.f3 ef3 26.gf3+-) 24.g3 (24.Rc7 f4+-) 24...g5 (24...Kf7+-) 25.Nb3 f4?! (25...Kf7 26.Na5 Nb8 27.Rc7+-) 26.gf4 (26.Na5 f3 27.Kd2 g4 28.hg4 Bg5 29.Nc6 Ra8 30.Rd7 Ra4 31.Rd5 Nf7+-) 26...gf4 (26...Nf5 27.Nb6 Nb6 28.cb6 gf4 29.ef4+-) 27.ef4 (better 27.Na5!? f3 28.Ke1 Ra8 29.Nc6 Bf8+-) 27...Nf5 28.Be3 (28.f3 Bf6 29.fe4 de4+-) 28...Bh4? (better 28...Ra8 29.Rb4 Bf8+-) 29.Nb6 Nf6 (29...Nb8 30.a4+-) 30.a4 (30.Na5 Rf8+-) 30...Nh5 31.a5 (31.Na5 Nf4 32.Bf4 Nd4 33.Kd1 Rf8+-) 31...Ne3 32.fe3 Ng3 33.Kd2 Nf1 34.Ke2 Ng3 35.Kd1 Nf1 36.a6 Ne3 37.Kd2 Nf1 38.Ke2 Ng3 39.Ke3 (better 39.Kd1 e3 40.Nc1+-) 39...Nf1= 40.Ke2 Ng3 41.Kd1 e3 42.Nc1 Ne4 43.Ne2 Nf2 44.Kc2 Nh3 45.a7 1-0. jhonores (2250) - calamarci (2125), Rated Blitz game, lichess.org, 2020.

6.e3 e6 7.a3 d5 8.d3 (8.bc6 Qb2 9.Bb2 bc6 10.Bf6 gf6=) 8...Nbd7 9.Nf3 Nc5 (9...dc4 10.dc4 Bd6 11.Be2+=) 10.Nc3 (10.bc6 Qc6 11.Nbd2 Be7+=) 10...Be7 (10...dc4 11.dc4 Be7 12.bc6 Qc6 13.Ne5=) 11.Bd2 (11.d4 Nce4=) 11...0-0 (11...dc4 12.dc4 0-0 13.Be2=) 12.d4= Nce4 13.c5 Qd8 14.b6 (14.Rb1 Ng4 15.Ne4 de4=) 14...Nc3 (14...Ng4!? 15.Ne4 de4=) 15.Bc3+= Ne4 16.Bb4 Bf6 (16...f6 17.Bd3+=) 17.Bd3+/– h6 18.0-0 g5 (18...Be7 19.Qc2+/–) 19.Qc2 g4 20.Nd2 (20.Ne5 Be5 21.de5 f5+–) 20...Ng5 21.Qd1 (21.Bc3!?+/–) 21...e5+= 22.Bc3 e4 (22...ed4!? 23.Bd4 Bd4 24.ed4 Qf6=) 23.Be2+/– h5 24.Ra2 Kg7 25.Kh1 (25.Rb2 Ne6+/–) 25...Be7 (25...Ne6 26.Rb2+/–) 26.f4 (26.Rb2 f5+/–) 26...gf3 27.gf3 Rh8 (27...ef3 28.Bf3 Nf3 29.Nf3+=) 28.f4 (28.fe4 Kf8+–) 28...Nf3? (better is 28...Nh3+=) 29.Nf3+– ef3 30.Bf3 Qd7 (30...Bf5 31.Rg1 Kf8 32.Rag2+–) 31.Rg1 (31.e4 Kh6+–) 31...Kf8 32.Be1 (32.e4 de4 33.Be4 Qh3+–) 32...Qh3 33.Rg3?? (33.Rag2 Ke8+–) 33...Qe6?? (33...Qf1 34.Rg1 Qh3+–) 34.Qd3 Bh4 (34...Qf6 35.Rag2+–) 35.Rg1 Qh3? (better is 35...Be1 36.Re1 Qh3+–) 36.Bg2 Qe6 (36...Qg4 37.Bd5! Qd7+–) 37.Bh4 Qg4 (37...Rg8 38.Re2+–) 38.Bf6 (38.Bg5 Qe6+–) 38...Rg8 39.Qe2 (39.Bg5!? Bf5 40.Qf1 Be6+–) 39...Qg6 40.Be5 Bf5 41.Bd6 Ke8 42.Qe1 (42.Raa1 Kd7+–) 42...Be4 (42...Kd7 43.Rf2+–) 43.Be4 (better is 43.Qg3!? Qg3 44.hg3 Bf5+–) 43...Qe4 44.Rgg2 Rg4 (44...Kd7 45.Qd1 Rae8 46.h3 Rg2 47.Rg2+–) 45.Kg1 1–0. algernon (2265) – pawnraider (2280), net–chess.com, 2010.

6.e3 g6 7.Nf3 Bg7 8.d4 0-0 9.Be2 d5 10.Nbd2 (10.c5 Qd8=) 10...a3 (10...c5 11.Qa3 dc4 12.dc5 Qb5 13.Bb2=) 11.Qb3+= dc4 (11...Qa5 12.0-0+=) 12.Bc4 (worse 12.Qc4 Be6 13.Qd3 Qb5 14.Qb5 cb5 15.Bb5 Rc8=; 12.Nc4?! Qc7+/-) 12...cb5 13.Bb5 Be6 14.Bc4 Qb3 15.ab3 Bc4 16.bc4 (16.Nc4 a2 17.Na3 Rc8=+) 16...a2=+ 17.Bb2 Nc6 18.Bc3 e5 (18...Rfc8 19.Kd1=+) 19.0-0 (better 19.d5 Nb8 20.Be5+=) 19...ed4 20.ed4 Rfd8 21.Rfc1 Ng4 d4 draws heavy fire (21...Ra3 22.Bb2 Ra7 23.Bc3=+) 22.d5 (22.h3 A) worse 22...Nd4 23.Bd4 Rd4 24.Nd4 (24.hg4 Rg4 25.Kf1 Bb2-+) 24...Bd4 25.hg4+/-; B) 22...Nh6 23.Rc2 Nf5 24.Rca2 Ra2 25.Ra2 Nfd4 26.Bd4 Nd4=) 22...Nce5 (22...Bc3 23.Rc3 Nb4 24.Kf1=+) 23.Rc2 Ra3?? (better 23...Nf3 24.Nf3 Bc3 25.Rc3 b5=+) 24.Be5+- Ne5 25.Raa2 (25.Ne5 Be5 26.Rca2 Ra2 27.Ra2 b5=) 25...Rda8 (25...Nf3!? 26.gf3 Ra2 27.Ra2 f5+/-) 26.Ra3+- Ra3 27.Ne5 Be5 28.g3 Kf8 29.Kf1 Ke7 (29...b6 30.f4 Bd4 31.Kg2+-) 30.Ke2 (30.c5 Rd3 31.d6 Kd8+-) 30...f5 (30...b6 31.Nf3 Bg7 32.g4+/-) 31.c5+- Kd7?? (31...Bd4 32.h4+-) 32.Nf3 (better 32.Nc4 Bg3 33.Na3 Bh2 34.c6 bc6 35.dc6 Ke6 36.c7 Bc7 37.Rc7+-) 32...Bf6 33.h4 h6 34.Nd2 Ra4 35.Nc4 Kc7 (35...Rb4 36.Nb6 Kc7 37.Rd2+-) 36.Nb6 (better 36.h5!? gh5 37.Nd6 Kb8 38.Nf5 h4+-) 36...Re4 37.Kf3 Rd4 38.Re2 g5?? (better 38...Rd3 39.Re3 Rc3 40.Rc3 Bc3+-) 39.hg5 (39.Re6 Rd3 40.Ke2 Rb3 41.Rf6 Rb2 42.Kd3 Kd8 43.Rh6 Ke8 44.Rh8 Kf7+-) 39...hg5 40.Re6 g4 41.Ke2 (41.Kg2 Bd8+-) 41...Re4 42.Re4 fe4 43.Ke3 Bb2 (43...Bc3 44.Ke4 Bd2 45.d6 Kd8 46.Nd5+-) 44.Ke4 (44.Nc4 Bc3 45.Nd6 Kb8+-) 44...Ba3 45.Kd4 Bb2 46.Kc4 Be5 (46...Bg7 47.d6 Kc6 48.Nd5 b5 49.cb6+-) 47.d6 (47.Kd3 Bh8+-) 47...Kc6 48.Nd5 (better 48.Nc8 b5 49.Kb4 Kd7+-) 48...Bg7 (48...b5 49.cb6 Bd6 50.Nf6+-) 49.Ne7 (49.Nb4 Kd7 50.Kd5 Bf6+-) 49...Kd7 50.Ng6 (better 50.Kd5 Bf6 51.Ng6+-) 50...Be5 (50...Kc6 51.Nh4 Bb2+-) 51.Ne5 Ke6 52.Ng4 b5 53.cb6 (better 53.Kb5 Kf5+-) 53...Kf5 54.d7 Kg4 (54...Kg6 55.d8Q Kg7 56.Qd7 Kf8 57.b7 Kg8 58.b8Q) ½-½. jhonores (2220) - bioagent (2310), Rated Blitz game, lichess.org, 2020.

6.Ba3 d6 7.f3 (7.Qd3 cb5 8.cb5 e5+=) 7...e5 8.e3 Be6 9.Ne2 (9.d4 ed4 10.Qd4 Qd4 11.ed4 cb5 12.cb5 Nd5+=) 9...Be7 10.Qd3 c5 11.g4 (11.Bb2 Nc6+=) 11...h6 (11...h6 12.Nbc3 0-0+=; 11...d5 12.cd5 Bd5 13.Bg2–/+) 0–1. Rettenbacher,W – Koerner, corr SOK–87–08, 1988.

6.Ba3 Ne4 7.Qf3 Qd4 8.c5 –+.

6.d3 d5 =.

6.e3 d6 7.d4 =.

6.e3 e6 7.d4 Ne4 (7...d6 8.Nf3=) 8.Qc2 Bb4 9.Bd2 Nd2 10.Nd2 cb5 (10...d6 11.Bd3=) 11.cb5+= 0-0 12.Ngf3 (12.Bd3 f5=) 12...d5 13.Bd3 g6 (13...h6 14.Rc1=) 14.0-0 (14.a3 Bd6=) 14...Bd7 15.Rab1 Rc8 16.Qd1 Bd6 17.h4 (17.Qe2 Rc3=) 17...Rc3 18.Be2 (18.Qe2 f6=) 18...Ra5 b5 seems the pivot of the position (18...Qa5 19.Ne5+=) 19.h5 (19.e4 f6=) 19...Qc7 (19...gh5 20.Ne5+=) 20.hg6 (20.e4 Rc2 21.Rc1 Rc1 22.Qc1 Qb6=) 20...hg6 21.e4 Ba3 (21...Rc2 22.e5 Ba3 23.Ra1+=) 22.Ne5 Be8 (22...Bd6 23.b6 Qc8 24.Re1=) 23.ed5+= ed5 24.f4 (24.Re1 Nd7+=) 24...Rc2 25.Bd3 White prepares the advance f5 (better is 25.Nc6! Ra2 26.Na5 Qa5 27.Nf3+=) 25...Ra2–/+ 26.f5 (26.Ndf3 Qc3–/+) 26...Bb2 (26...Qb6 27.Ndf3–/+) 27.Qg4 Bd4?? (27...Nd7 28.fg6 f5 29.Rf5 Ra1+/–) 28.Qd4+/– Rd2 29.fg6 fg6 30.Qd5 Kg7 31.Qd4 Kg8 32.Bc4 Kh7 (32...Kg7 33.Nd3 Kh6 34.Rf8 Rg2 35.Kg2 Bc6 36.Kf1 Rb5 37.Rh8 Qh7 38.Qf4 Rg5 39.Qf8 Kh5 40.Rh7 Kg4 41.Qf4) 33.Qd2 (better is 33.Qh4 Kg7 34.Qf6 Kh7+–) 33...Qc5 (33...Qe5 34.Qa5 Qd4 35.Rf2 Qc4+–) 34.Rf2 (34.Rf2 Qe5 35.Re1 Rb5 36.Bb5+–) 1–0. Koerner – Diener,Rudolf, corr SOK–87–08, 1987.

6.e3 g6 7.c5 Qa5 8.b6 (8.Qa5 Ra5 9.Bb2 Bg7+= (9...cb5 10.Bc3 b4 11.Bb4 Ra8 12.Nc3 Nc6 13.Rb1+=) 10.Be5 d6 11.cd6 ed6 12.Bd6 Ne4 13.Bc7+=; 8.d4 d6 9.Qa5 Ra5 10.Ba3 Nbd7 11.cd6 ed6 12.Nd2 Be7 13.Rc1+=; 8.Bb2 Qc3 9.Bc3 Bg7 10.Na3 0-0 11.Nc4 Ne4 12.Bg7 Kg7 13.bc6=; 8.bc6 Nc6 9.Nf3 Bg7 10.Bb2 d6 11.cd6 ed6 12.Qa5 Ra5 13.Na3=) 8...Bg7 (8...d6 9.cd6 (9.Qa5 Ra5 10.d4 Nbd7 11.Bd2 Ra8 12.cd6 ed6 13.Nc3+=) 9...Nbd7 10.Qa5 (10.de7 Be7 11.Qa5 Ra5 12.d4= Nb6 13.Bd2=) 10...Ra5 11.Bb2 ed6 12.Na3 d5 13.Rb1=) 9.Bb2 (9.Ba3 Qc3 10.Nc3 Ne4= 11.Nge2 d5 12.cd6 Nd6 13.Ng3=) 9...Nh5 (9...Qc3 10.Bc3 (worse is 10.dc3 Ne4–/+ 11.Ba3 Na6 12.Ba6 Ra6 13.f3+=) 10...d6 11.cd6 ed6 12.Na3= 0-0 13.Nf3=) 10.Qa5 (10.d4 Qc3 11.Nc3 Nf6 12.Nf3 0-0 13.Ba3+=) 10...Ra5 11.Bg7 Ng7 12.d4 e5 (12...d6 13.cd6+=) 13.Nf3 (13.Nd2+/–) 13...ed4 14.ed4 a3 (14...d6 15.Nbd2 dc5 16.Nc4+=) 15.Nc3 Nf5 (15...d6 16.cd6 Be6 17.Bd3+/–) 16.g4 Ne7 17.Ne5 0-0 18.Nc4 Ra8 19.Nd6 Na6 20.Bc4 Nb4 21.Kd2 Nbd5 22.Rhe1 Nc3 23.Kc3 Nd5 24.Bd5 cd5 25.Re5 f5 26.gf5 gf5 (26...Kg7+–) 27.Rg1 Kh8 28.Rg5 (28.Nf7! Rf7 29.Re8 Rf8 30.Rf8) 28...h6+– 29.Rgf5 Rf5 30.Rf5 Kg7 31.Rd5 Kf6 1–0. Kamaletdinov,Farit (1905) – Kazakov,Vasiliy (1620), 8th Astrakhan Open A, 2013.

6.e3 g6 7.c5 Qa7 8.Nf3 (8.b6 Qa5 9.Qa5 Ra5 10.d4 d6 11.Nf3 Nbd7 12.Bd2 Ra8 13.cd6+=; 8.Ba3 b6 9.d4 Bb7 10.bc6 Bc6 11.Nd2 bc5 12.Bc5 Qc7 13.Ba3+=; 8.d4 b6 9.Ba3 Bb7 10.bc6 Bc6 11.Nd2 bc5 12.Bc5 Qc7 13.Ba3+=) 8...b6 9.Ba3 Bg7 10.d4 0-0 11.Nbd2 Nd5 12.Qc2 bc5 13.Bc5 +=.

6.e3 g6 7.c5 Qc7 8.Nf3 (8.d4 d6 9.Nf3 dc5 10.Qc5 Bf5 11.Nc3 Nbd7 12.Qc4 Nb6 13.Qe2=; 8.b6 Qd8 9.Bb2 d6 10.cd6 Nbd7 11.de7 Be7 12.Nf3 Nb6 13.Be2=; 8.Ba3 Bg7 9.d4 d5 10.Nf3 0-0 11.b6 Qd7 12.Bd3 Ne4 13.Qc2=) 8...b6 9.d4 Bg7 10.cb6 Qb6 11.Nbd2 Nd5 12.Qc2 Qc7 13.bc6 +=.

6.e3 g6 7.c5 Qd8 8.Bb2 (8.d4 d6 9.Nf3 dc5 10.Qc5 Bf5 11.Nc3 Nbd7 12.Qc4 Nb6 13.Qe2=; 8.Nf3 d6 9.d4 dc5 10.Qc5 Bf5 11.Qc4 Bg7 12.Nc3 Ne4 13.Ne4=; 8.Be2 cb5 9.Nf3 Ra5 10.Na3 b4 11.Qb4 Nc6 12.Qb2 Rc5 13.d4=) 8...Bg7 9.d4 d5 10.Qb4 0-0 11.Nc3 cb5 12.Bb5 Nc6 13.Qa3 =.

5.cb5 a4 6.Qb2 d5 7.Nf3=.

5.cb5 a4 6.Qb2 d6 7.e3 Nd7 8.a3 (8.Nc3 Ngf6=) 8...Ngf6 9.d4 Ne4 (9...e5 10.Bd3=) 10.Nf3 Ndf6 11.Bd3 Bd7 12.0-0 Rc8 13.Nbd2 Nd2 (13...d5 14.Ne5+=) 14.Bd2+/- g6 15.Qb4 Ra8 16.Rfc1 Bg7 17.Rc2 0-0 18.Rac1 Nd5 19.Qb2 Rfc8 20.h3 (20.e4!? Nf6 21.Rc8 Bc8 22.Qc2+/-) 20...Rc2= 21.Rc2 Nc7 b5 becomes the focus of attention 22.Qb4 Bf8 (22...Nb5? 23.Rb2+-) 23.Qb1 (23.e4 Nb5 24.d5 Bg7+/-) 23...e6 24.Rb2 d5 25.Bb4 Bb4 26.Rb4 f6 (26...Ra5 27.Ne5 Bb5 28.Rb2=) 27.e4 (27.Bg6 hg6 28.Qg6 Kf8 29.Qf6 Kg8+-) 27...Qd6 (better 27...de4 28.Be4 Bb5 (worse 28...Nb5 29.Bg6 f5 30.Bh5+-) 29.Bg6 hg6 30.Qg6 Kf8 31.Qf6 Ke8+=) 28.e5+/- Qe7 (28...fe5 29.Ne5 Be8 30.Qc1+-) 29.Qc2+- Ne8 30.Ra4 Rc8 31.Qb2 f5 (31...Qd8 32.ef6 Nf6 33.Qe2+-) 32.Ra7 Rb8 (32...b6 33.a4+-) 33.a4 Qd8 34.a5 White prepares b6 34...Qc8 35.Ng5 h6 36.Nf3 Nc7 37.b6 Ne8 38.a6 ba6 39.Ba6 (worse 39.Ra6 Qc6+-) 39...Qc6? (39...Qd8 40.Bd3+-) 40.b7 (better 40.Qa3 Qb6 41.Rd7+-) 40...Nc7 41.Qa3 (better 41.Bd3!?+-) 41...Na6+/- 42.Ra6 Qb7 43.Ra7 Qc6. jhonores (2165) - YourBoyKandy (2280), Rated Blitz game, lichess.org, 2020.

5.cb5 a4 6.Qb2 Nf6 7.a3 (7.Qc2 Qd8=) 7...g6 (7...d5!?=+) 8.Nc3= Bg7 9.e3 0-0 10.d4 d6 11.Nf3 h6 12.Be2 Be6 13.0-0 Bb3 14.Nd2 Be6 15.Nc4 (15.Bd1 Rc8 16.Na4 Qa5+=) 15...Bc4 (15...Qc7 16.Nd2=) 16.Bc4+= Nbd7 17.Qb4 Qc7 18.Na4 (18.Bd2 Nb6 19.Bd3 e5+=) 18...Ra4= 19.Qa4 Nb6 20.Qa5 Ra8 21.Qa8? (better 21.Bf7 Kf7 22.Qb4=) 21...Na8-+ 22.Be2 Ne4 23.Bf3 Nc3 (23...d5 24.Be4 de4 25.a4-+) 24.a4 (24.Bd2 Na4-/+) 24...Nb6 25.a5 Nbd5 (better 25...Nc4!?-+) 26.a6 (26.Bb2 e6 27.Rfc1 Qc4 28.Bc3 Qb5+- (28...Nc3?? 29.a6+-)) 26...ba6=+ 27.ba6 Qa7 28.Bd2 e6 (28...e5 29.e4 Nc7 30.Bc3 ed4 31.Bd2+/-) 29.e4 (29.Bc3 Nc3 30.Rfc1 Nb5 31.Rc8 Kh7+/-) 29...Bd4 (29...Qd4? 30.Bc3 Qc3 31.ed5+-) 30.ed5 e5 (better 30...Nd5!? 31.Ra2 Kg7+=) 31.Bc3+/- (31.Bh6?! e4 32.Bg4 f5=) 31...Bc3 32.Ra3 Bb4 (32...Bd4 33.Ra2+/-) 33.Ra4 (33.Ra2 Bc5+-) 33...Bc5+/- 34.Be2 Qd7 35.Rfa1 (35.Ra2 Kg7+/-) 35...Ba7 (35...Qa7+=) 36.Ra5 (36.Bd3 f5+/-) 36...Qc7 (36...Qf5 37.Rf1 Qc2 38.Re1=) 37.Bb5 (better 37.Rb5!?+/-) 37...Qc5= 38.Kh1 Qf2 39.Bc6 e4 40.R5a2 Qd4 41.Rb1 e3 42.Re2? (better 42.Ra4 Qc3 43.Raa1=) 42...Qd3-+ 43.Rbe1 (43.Ree1 Qa6 44.Ra1 Qb6-+) 43...Qa6 44.h4 h5 45.Kh2 Qc4 46.Kh3 (46.g3 f5-+) 46…Qg4 (46...Qg4 47.Kh2 f5-+ (47...Qh4?! 48.Kg1-+)) 0-1. jhonores (2255) - YourBoyKandy (2260), Rated Blitz game, lichess.org, 2020.

5.cb5 a4 6.Qc2 Qd8+=.

5.cb5 d6 6.Nc3 Be6 7.Qd1 (7.Qa4 Nf6=) 7...g6 (7...Nf6 8.Nf3=) 8.Nf3 Bg7 9.d4 Nf6 10.e4 0-0 11.Be3 Bg4 (11...d5 12.e5 Ng4 13.Na4+=) 12.Rc1 Nbd7 (12...Rc8 13.Be2+=) 13.Bd3 Rfc8 (13...Bh5 14.h3 Bf3 15.Qf3+/–) 14.0-0 (14.h3 Bf3 15.Qf3 Rc7+/–) 14...e6 (14...Bh5 15.e5 Rc3 16.Rc3+=) 15.h3+/– Bf3 16.Qf3 (< 16.gf3 a4=) 16...Ne8 17.Rc2 (17.Ne2 Nc7+/–) 17...Qa7 (17...Bd4 18.Na4 Qa7+–) 18.d5 b6 (18...Bd4 19.de6 fe6 20.Bd4 Qd4 21.Ne2=) 19.Rfc1 Ne5 20.Qe2 a4 (20...Rc7 21.Na4 Rb8 22.a3+/–) 21.f4 (21.a3 Rc7+/–) 21...Nd3+= 22.Qd3 Qa5 (22...Rc7 23.a3+/–) 23.de6 fe6 24.f5 ef5 25.ef5 gf5 26.Qf5 Kh8 (26...Rc7 27.Nd5 Rc2 28.Qe6 Kh8 29.Rc2 Qb5 30.Nb6+=) 27.Nd5 (27.a3!?+/–) 27...Rc2+= 28.Rc2 Qb5 29.Rf2 Ra7 (29...Qa5!?+=) 30.Bd4!+/– h6 (30...Bd4 31.Qf8) 31.Qe4 (31...Bd4 32.Qd4 Kg8 33.Nb6+/–) 1–0. Solare,Juan – Luehrig,Walter, Orang–Utan Invitational, 2001.

5.cb5 d6 6.e4 Nf6 7.Bc4 (7.Nc3 Nbd7=) 7...e6 (7...Qd4 8.Bf7 Kd8 9.Bb2 Qe4 10.Kf1=) 8.Nc3 a4 9.Qc2 (9.Na4 Ra4 10.Qa4 Qd4=+) 9...Nbd7 10.Nf3 (10.Na4? Ra4 11.Qa4 Qd4–+) 10...Qc7 11.Bd3 Be7 12.Ba3 b6 13.0-0 (worse 13.Na4 Qa7 14.Nb6 Qb6–+) 13...Bb7 14.Rac1 Nc5 15.Rfe1 0-0 16.Na4 Rfc8 17.Bc5 bc5 18.e5 de5 19.Ne5 Bd6 20.b6 Qb8 21.f4 Be7 22.Bb5 c4 23.Qb2 (23.Nc4 Qf4 24.Qb3 Ra4–+) 23...Bd5 24.d3 cd3 25.Rc8 Qc8 26.Rc1 Qf8 27.Qd4 (worse 27.Nd3 Ba3 28.Qd4 Bc1 29.Nc1 Ne4–+) 27...Rc8 28.Nd3 Rc1 29.Nc1 Qa8 30.Qb2 (30.Bf1 Bc6 31.Nc5 Nd5=+) 30...Qa5=+ 31.Nd3 Bd6 32.Nc3 Ba3 33.Qc2 Bb7 34.Kh1 Qb6 35.Qf2 (35.Qa4 Bd6–/+) 35...Qa5 (35...Qf2 36.Nf2 Nd5 37.Nd5 Bd5 38.Be2–/+) 36.Qd4 Nd5 37.Nb1 Bd6 38.a4 Bb8 39.Ne5 Qe1 (39...Nf4 40.Qf4 Qe1 41.Qf1 Qe5 42.Qg1–+) 40.Qg1 Qe4 41.Nd7 (41.Nc6!?–/+) 41...Qf4 (41...Bf4 42.Nc5 Qe5 43.Nb7 Bh2 44.Qc1=) 42.Nb8 Ne3 (42...Qb8?! 43.Nd2–+) 43.Nc6 (43.Bc6 Ng4 (43...Qb8?! 44.Bb7 Qb7 45.Nd2–/+) 44.Bf3 Bf3–+) 43...Ng4 44.g3 Qe4 45.Qg2 Qb1 46.Qg1 Qc2 47.h3 Bc6 48.Bc6 Qc6 49.Qg2 Nf2 50.Kh2 Qg2 (better 50...Ne4 51.Qb2 Qd6 52.Qg2–+) 51.Kg2 Nd3 (51...Nd3 52.a5 Nc5–+) 0–1. mafergut – Curlywurly, ChessWorld.net, 2003.

5.cb5 e6 6.Ba3 d6 =.

5.cb5 e6 6.a4 Nf6 7.Nf3 d5 8.e3 Nbd7 (8...Nc6 9.Bb2=) 9.Bb2 (9.d4!?+=) 9...Nc5=+ 10.Qd1 Be7 (10...Bd6 11.Be2=+) 11.Be2= 0-0 12.0-0 Bd7 13.d3 Rac8 14.Ne5 Rfd8 (14...Be8 15.Nd2=) 15.Nd2 Be8 16.Ra2 (16.Rc1 Bd6+=) 16...Nfd7 17.Ndf3 (17.d4!? Ne5 18.dc5=) 17...Ne5=+ 18.Ne5 Bd6 (18...f6 19.Nf3=+) 19.Nf3 (19.Bg4 Qc7 20.f4 Qe7=+) 19...Nd7 (19...f6 20.Ra3=+) 20.Bd4 (20.Nd4 e5 21.Nf5 Bb4=+) 20...Bc5 (20...Qc7 21.Bb2=+) 21.Ba1 (21.Qd2 Bd4 22.Nd4 Nc5=) 21...f6= 22.Qb3 Bf7 (22...Bb4 23.Rc2=+) 23.d4= Bb4 24.Rc2 (24.Bd3 Rc7=) 24...Rc7 (24...Rc2!? 25.Qc2 Bg6=) 25.Rfc1= Rdc8 26.Bb2 (26.Bd3 Bh5=) 26...Qd6 27.Rc7 (27.Nh4 Nb6=) 27...Rc7 28.Qd1 (28.Ba3 Rc1 29.Bc1 Bg6=) 28...Nb6=+ 29.Qb3 (29.Bd3 Bh5=+) 29...Qd8 (29...Bg6 30.Bd1–/+) 30.Bd3 Qc8 31.Rc2 (31.Rc7 Qc7 32.Ba3 Qc3 33.Qc3 Bc3=+) 31...Rc2 (31...Bg6 32.Bg6 hg6–+) 32.Qc2? (32.Bc2 Bg6 33.Bd1 Qc4–/+) 32...Qc2 (better 32...Bg6!? 33.Bg6 hg6 34.Qc8 Nc8–+) 33.Bc2–/+ Nc4 34.Bc1 e5 (34...Bg6 35.Bd1–/+) 35.Kf1 (35.de5 fe5 36.Ng5 Bg6 37.Bg6 hg6–/+) 35...b6 (35...e4 36.Ng1=+) 36.Ne1 (36.de5 fe5 37.Ng5 e4=) 36...Bc3 (36...e4 37.f3=+) 37.Nf3 Bh5 (37...e4 38.Ng1=+) 38.de5 Bf3 (better 38...fe5!? 39.Bf5 Kf7=) 39.gf3+– fe5 (39...Ne5 40.Ke2 Nd7+=) 40.Bf5 (better 40.e4!?+–) 40...Kf7= 41.Ke2 (41.Bh7? g6 42.Ke2 Kg7–+) 41...g6 42.Bd7 (42.Bc2 Nb2+=) 42...Ke7= 43.Bc6 Ke6 (43...Kd6 44.e4 d4 45.Bd5=) 44.Kd3 Be1?? (better 44...Bb2 45.e4 de4 46.Kc4 Bc1 47.fe4 Ba3=) 45.e4+– de4 (45...Nd6 46.ed5 (46.Bd5?! Kd7+–) 46...Kf5 47.Be3 e4 48.fe4 Ne4 49.Bb6+–) 46.Kc4 Bf2 47.Be4 Bd4 (47...Bc5 48.Bd5 Kf5 49.h4+–) 48.Kd3 Bg1 49.h3 Bc5 50.Be3 Kd6 (50...Be3 51.Ke3 Kf6 52.Kd3+–) 51.Bc5 Kc5 52.Kc3 Kd6 53.Kc4 Ke6 54.Kd3 (54.Bc2 Kd6+–) 54...Kd6 (54...Ke7 55.Kc2+–) 55.Ke3 Ke6 56.h4 Kf6 57.Bc2 h6 58.Ke4 Ke6 59.Bb3 Kd6 (59...Kf6 60.Bd5+–) 60.Bd5 h5 (60...g5 61.hg5 hg5+–) 61.Bf7 g5 (61...Kc5+–) 62.hg5 h4 63.Ke3 (63.g6 Ke7 64.Ke5 h3 65.f4 h2 66.Bd5 Kd7 67.g7 h1B 68.Bh1 Ke7 69.g8Q Kd7 70.Qf7 Kd8 71.Kd6 Kc8 72.Qc7) 63...h3 64.Kf2 1–0. algernon (2330) – pawnraider (2315), net–chess.com, 2014.

5.cb5 e6 6.Bb2 =.

5.cb5 e6 6.Nc3 Nf6 7.Bb2 (better is 7.Nf3=) 7...Be7 (7...d5 8.e3=) 8.Nf3 (8.Na4 Qd6+/–) 8...0-0 (8...d5 9.e3=) 9.e3 (9.Na4 Qd8 10.Rc1 Nd5+/–) 9...d5= 10.Bd3 (10.Be2 Nbd7=) 10...Nbd7 11.Na4 (11.0-0 Qd6=) 11...Qd8 12.Rc1 Nb6 (12...Bd6!?=) 13.Nb6+= White launches an attack 13...Qb6 14.Bd4 Qd8 15.a4 b6 (15...Bd6 16.Qb1+=) 16.Ne5+/– Bb7 (16...Nd7 17.Nc6 Qe8 18.Qc3+/–) 17.Nc6 Bc6 18.bc6 The passed pawn on c6 quickly leads to threats 18...Bb4 (18...Bc5!?+=) 19.c7+/– Qd6 20.Bf6 gf6 21.Qc2 (better is 21.Qd1 Rfc8 22.Qg4 Kf8 23.Bh7 Rc7 24.Rc7 Qc7 25.Qg8 Ke7 26.Qa8 Qc1 27.Ke2 Qh1 28.Qb7 Kd6 29.Qb6 Kd7 30.Qb7 Kd6 31.Qb8 Kd7 32.Bd3+/–) 21...Qc5? (21...Rfc8 22.Bh7 Kg7 23.Bd3+=) 22.Qb2 (better is 22.Bh7!? Kg7 23.Qd1+–) 22...Qe7+/– 23.Qd4 White terminates the opponent with strong threats 23...Bc5 (better is 23...Rfc8!? 24.Qg4 Kf8 25.Bh7 Qd7+=) 24.Qg4 Kh8 25.Qh4 Do you see the mate threat? 25...f5 26.Qe7 Be7 27.Ba6 Bc5 (27...Ra6 28.c8Q Rc8 29.Rc8 Kg7 30.Rc6+/–) 28.Bb7+– Rac8 29.Bc8 Rc8 30.d4 Bd6 31.Ke2 Rc7 32.Rc7 Bc7 33.Rc1 Bd6 34.Rc6 (34.Rc6 Be7 35.Rc7+– (worse is 35.Rb6 Kg7+–)) 1–0. Roczniak,Jan – Bialas,R, Poland (year?).

5.cb5 Nf6 6.e3 d5 7.Nf3 Bg4 8.Be2 Nbd7 9.d4 e6 10.0-0 Bd6 11.a4 Rc8 12.Ba3 0-0 13.Nbd2 Ne4 14.Bd3?? (14.Bd6 Qd6 15.Bd3 Bf3 16.Nf3 Rc3=) 14...Bf5?? (better 14...Rc3 15.Qb1 Ba3 16.Be4 de4 17.Ne4 Bf5-+) 15.Rfc1 h6 (15...Ndf6 16.Be4 Ne4 17.Bd6 Qd6 18.Ne4 Be4 19.Nd2=) 16.Bd6 (16.Be4 Be4 17.Ne4 de4+=) 16...Nd6 17.Bf5 Nf5 18.h3 Nd6 19.Qd1 Qa7 20.Rc2 Nb6 21.Ne5 f6 (21...Rc2 22.Qc2 Rc8 23.Qa2=) 22.Nd3 Nbc4 23.Nc4 Nc4 24.Nc5 Qb6? (24...Rfe8 25.Qg4 f5 26.Qg6+=) 25.Qg4 (better 25.Nd7 Qd6 26.Nf8 Rf8 27.Rac1+-) 25...f5+= 26.Qf4 Rfe8 (26...e5 27.Qf3 Rcd8 28.Rac1+=) 27.Rac1+= Qd6? (27...Re7 28.Qg3+=) 28.Qh4 (better 28.Nb7 Qb4 29.Nc5+-) 28...b6 29.Nd3 Rcd8 30.Nf4 e5 (30...g5!? 31.Qg3 Kf7=) 31.de5 (31.Nd5 Na3 32.Nc7 Nc2 33.Ne8 Re8 34.Rc2 ed4+/-) 31...Qe5 (31...Ne5 32.Rd1 g5 33.Qg3+=) 32.Ng6 (32.Nd5 Na3 33.Nc7 (33.Nb6 Nc2 34.Qc4 Re6-/+) 33...Nc2 34.Ne8+/-) 32...Qd6 33.Qh5 Re6 34.Nf4 Re5 35.Rd1 Qf8? (better 35...Qb4 36.Qe2 Na3+/-) 36.Ng6+- Qf7 (36...Qf6 37.Rc4 Re3 38.Rcd4+-) 37.Rc4 Re6 (37...Kh7 38.Rc6+-) 38.Rc6 (38.Rd5! Rde8 39.Nf4 Qh5 40.Nh5 Re4+-) 38...Rc6 39.bc6 Qc7 (39...Rd6 40.Qf5! Qf5 41.Ne7 Kf7 42.Nf5 Rc6 43.Rd5+-) 40.Nf4 (better 40.Qf5 Qf7 41.Rd5 Rd5 42.Qd5 Qd5 43.Ne7 Kf7 44.Nd5+-) 40...Qc6 41.Qg6 Qc2 (41...Qg6 42.Ng6 Kf7 43.Nf4+-) 42.Rd4 Qd1 (42...Qc1 43.Kh2 Qc7+-) 43.Kh2 (43.Kh2 Qd4 44.ed4+-; 43.Rd1 Rc8 44.Nh5 Kf8 45.Qg7 Ke8 46.Nf6 Kd8 47.Rd5) 1-0. jhonores (2150) - Leonsantillan (2120), Rated Blitz game, lichess.org, 2020.

5.Qb5 Qb5 6.cb5 Nf6 =.

5.cd5 a4 6.Qc4 Qb5 7.Qb5 cb5 +=.

5.cd5 Qb5 6.Qb5 cb5 7.Na3 (7.e4 Bd7+=) 7...Bd7 8.e4 b4 9.Nc4 Na6 (better is 9...Nf6!? 10.Nb6 Ra7+/–) 10.Nb6+/– (10.Na5?! Nc5 11.Nc4 Ne4=) 10...Rd8 11.Nf3 e6 (11...Nc5 12.e5 Na6 13.Bb2+–) 12.Ne5 (12.Nd7 Rd7 13.de6 fe6+–) 12...Nf6 13.Ned7 Nd7 14.Bb5 ed5 15.Nd7 Rd7 16.ed5 Nc7 17.Bd7 Kd7 18.0-0 Nd5 19.Bb2 f6 20.Rfe1 Bd6 21.g3 Rc8 22.Rac1 Rc6 23.Kf1 Nb6 24.Bd4 Na4 25.Ke2 Nc5 26.Red1 Ne6 27.Be3 Nc7 28.Rc6 (28.h3!?+/–) 28...bc6+= 29.Bb6 a4 30.Bc7 Bc7 31.Kd3 Bd6 32.Kc4 b3? (better is 32...f5+=) 33.ab3+– ab3 34.Kb3 Ke6 35.Kc4 Ba3 36.Ra1 Be7 37.Ra6 Kd7 38.Ra7 Ke6 39.f4 f5 40.Ra8 h6 41.d4 Kd6 42.Ra6 Kd7 43.d5 c5 (43...cd5 44.Kd5 Bf6 45.Ra7 Kd8 46.Ke6+–) 44.Ra7 Kd6 45.Re7! Ke7 46.Kc5 g5 47.d6 (47.d6 Kd7 48.Kd5+–) 1–0. Valenta,Vit jr (2160) – Karczynski,L (1890), Tatranske Zruby SVK, Tatry Open, 2011.

5.e3 a4 6.Qc2 e6 (6...Nf6 7.Nc3 dc4 8.Bc4+=) 7.Nc3 dc4 8.Bc4 Bd7 9.Rb1 Nf6 10.Nf3 Be7 (10...Qa5 11.Ne5+=) 11.0-0 (11.Ne5 cb5 12.Nd7 Nbd7 13.Bb5 Qc7+=) 11...0-0 12.Ne5 Qc7 13.Nd7 (13.d4 Bd6+=) 13...Nbd7 14.bc6 bc6 (14...Qc6 15.Bb5 Qc7 16.Ba4+=) 15.Na4 Qa5 16.Nc3 Ne5 17.Be2 Nd5 18.Bb2 Nd7 19.Bc4 N5b6 (19...Ne5 20.Nd5 cd5 21.Bc3+/–) 20.Bd3 h6 21.Ra1 (21.Bh7 Kh8+–) 21...Bf6 (21...Ne5 22.Bh7 Kh8 23.d4+/–) 22.Bh7+– Kh8 23.Be4 Nd5 24.d4 Rab8 25.Ne2 (25.Rfc1 e5 26.Nd5 cd5+/–) 25...Rb6 (25...c5 26.Rfc1+/–) 26.Nf4 (26.Nc1!?+–) 26...Rfb8+= 27.Nd3 c5 28.Bd5 (28.Rfb1 cd4 29.ed4 Ne7+/–) 28...ed5 29.Bc3 (< 29.dc5 Rb2 30.Nb2 Rb2=+) 29...Qa3 30.dc5 Nc5 31.Bf6 Nd3 32.Bd4 Nb4 (32...Rb5 33.Rfd1 Nb4 34.Qc3 Qc3 35.Bc3+/–) 33.Qf5+– R6b7 34.Rfb1 (34.Rfc1 Re7 35.Qf4+–) 34...Qa4? (better is 34...f6+–) 35.a3 Nc2 36.Rb7 Rb7 37.Rc1 (37.Qc8 Kh7 38.Qb7 Na1+–) 37...Rb8 (37...Qc6 38.Be5 f6+–) 38.Bg7! (38.Qc2 Qc2 39.Re1 Rb1–+) 38...Kg7 39.Qe5 (39.Qc2?? Qc2 40.Rf1 Qb3–+) 39...Kg6 40.Qb8 Na3 (40...d4 41.Qd6 Kg7 42.Qe5 Kg6 43.Qe4 f5 44.Qc2 Qc2 45.Rc2 de3 46.fe3+–) 41.Qd6 (41...Kg7 42.Ra1+–) 1–0. Schmidt,Horst – Artz,Frank, Baden–ch MB Mannheim, 1990.

5.e3 Nf6 6.a4 Bf5 (6...e5 7.Bb2 Nbd7 8.Nf3=+) 7.d4= e6 8.Nf3 Be7 9.Ba3 Ba3 10.Qa3 Nbd7 11.Nc3 Ne4 (11...c5 12.cd5 ed5 13.dc5 Nc5 14.Be2=) 12.Rc1 Rc8 13.bc6 bc6 (worse 13...Qc6 14.Nb5 Qb6 15.Nh4+-) 14.cd5 ed5?? (14...cd5 15.Bb5 Qd6 16.Qd6 Nd6 17.Ke2+=) 15.Be2?? (better 15.Nd5 Qd8 16.Ba6+-) 15...Qb4 16.Ra1?? (better 16.Qb4 ab4 17.Ne4 Be4 18.Nd2=) 16...Qc3-+ 17.Qc3 Nc3 18.Nh4 Be6 (18...Ne2?! 19.Nf5 Nc3 20.Nd6 Ke7 21.Nc8 Rc8 22.Ra3-+) 19.Bd3 (19.Ra3 Ne4-+) 19...0-0 (19...c5 20.dc5 Nc5 21.Bc2-+) 20.f3 (20.Nf5 Rc7-+) 20...c5 (20...Nb6 21.Ra3 Nca4 22.Ke2-+) 21.Kd2 (21.Nf5 Rc7 22.Kd2 Rb8-+) 21...cd4 22.ed4 Rc7 (better 22...Nb6!? 23.Nf5 Nc4 24.Bc4 Bf5 25.Ba6-+) 23.Rhc1 Rfc8 24.Rc2? (24.Ba6 Rb8 25.Rc3 Rc3 26.Kc3-+) 24...Nb6 25.Nf5 Kf8 (better 25...Nc4 26.Bc4 Bf5 27.Bd3 Bd3 28.Kd3-+) 26.Nd6 Rd8 27.Nf5?! (27.Nf7 Rf7 28.Kc3-+) 27...g6 (better 27...Nc4 28.Bc4 Rc4-+) 28.Ne3 Rdc8 29.g4? (better 29.Ba6 Nca4 30.Bc8 Rc8 31.Rc8 Bc8 32.Nd5 Nd5 33.Ra4-+) 29...Nca4 30.Rca2 Nc4 (30...Bd7!? 31.g5-+) 31.Nc4?? (better 31.Bc4 Nc5 32.Ra5 dc4 33.dc5 Rc5 34.Kc3=+) 31...dc4-+ 32.Be4 (32.Ra4 cd3 33.Kd3 Rc3 34.Ke4-+) 32...c3 33.Kc2 Nb6 (better 33...Ba2 34.Ra2 Rc4-+) 34.Ra5 Nc4 35.Ra8 (35.Rc5 f5 36.gf5 gf5-+) 35...Ne3 (35...f5 36.gf5 gf5 37.Rc8 Rc8 38.Bb7-+) 36.Kc1 (36.Kd3 Nd5 37.Rc8 Rc8 (37...Bc8?! 38.Bd5 Ke7 39.Bc4=) 38.Bd5 Bd5-+) 36…c2 0-1. jhonores (2210) - parsnips (2145), Rated Blitz game, lichess.org, 2020.

5.e3 Nf6 6.Bb2 Be6 7.bc6 (7.Nc3 dc4 8.Bc4 Bc4 9.Qc4 e6=) 7...Qb3 (7...Qc6 8.c5 d4 9.Qb5 de3 10.fe3=) 8.ab3 Nc6 9.Be2 (9.Na3 Nb4=) 9...Bf5 (9...dc4 10.bc4 Bf5 11.Na3=) 10.d3 (10.Nf3 dc4 11.Bc4 e6=) 10...Nb4 (10...dc4 11.bc4 Nb4 12.Kd2–/+) 11.Kd2 dc4 12.bc4 Rd8 13.Ra5 (13.Bf6 A) 13...ef6?! A1) worse 14.Ra5 Be4 15.Nf3 Nd3 16.Bd3 Bf3=+ (worse 16...Bd3 17.Kc3+=); A2) 14.d4=+; B) 13...Nd3 14.Bd3 ef6 (14...Rd3?! 15.Ke2 ef6 16.Ra5=) 15.Ra5 Bd3–+ (15...Rd3?! 16.Ke2 Be4 17.Ra8 Kd7 18.Nh3=)) 13...Bd3 (13...Nd3!? 14.Rf5 Nf2 (worse 14...Nb2 15.Kc2 Na4 16.Rb5+=) 15.Kc2 Nh1=+) 14.Nc3?? (better 14.Bf6 Bb1 15.Bd4=+) 14…Be4–+ (14...Be4 15.Kc1 Bg2–+) 0–1. jaddwarrior (2035) – leonwool (2220), ChessWorld.net, 2015.

5.e3 Nf6 6.Nc3 e5=.

5.Nc3 e6 6.Na4 Qd4 (6...Qd8!?=) 7.Bb2+/– Qa7 8.b6 Qa6 9.e3 c5 10.Nf3 Nc6 11.d4 d6 12.Be2 Bd7 13.0-0 Rd8 14.dc5 dc5 15.Ne5 Be7 16.Rad1 (16.Nd7 Nd7 17.Bg7 Rg8+–) 16...0-0 (16...Ne5 17.Be5 0-0 18.Bc7+=) 17.Nd7 (17.Nd3 Nb4 18.Nac5 Qb6 19.Bf6 gf6 20.Nd7 Rd7+–) 17...Rd7 (17...Nd7 18.Rd2+=) 18.Bf3+/– Rfd8 (18...Nb8 19.Bf6 gf6 20.Qb5 Qb5 21.cb5+/–) 19.Rd7 (19.Bf6 gf6 20.Rd7 Rd7 21.Bc6 bc6+–) 19...Rd7 (19...Nd7 20.Bc6 bc6+/–) 20.Rd1 (better is 20.Bf6!? gf6 21.Bc6 bc6 22.Rb1+–) 20...Rd1+= 21.Bd1 h6 (21...Nd7 22.a3+=) 22.f3 (22.Bf3!? Nd8 23.Qd3+/–) 22...Nd7+= 23.Kf2 (23.a3 Bd8+=) 23...Nb4 (23...Bd8!?+=) 24.a3+= Nc6 25.f4 g5 (better is 25...Bd8!?=) 26.Bf3+/– Nd8 27.g3 Bd6?? (27...gf4 28.gf4 Kf8 29.Kg2+/–) 28.Qc3 (better is 28.Qd3 Bf8 29.Qd7 Qc4 30.Qd8 Qa4 31.Qf6 Qc2 32.Ke1+–) 28...f6?? (better is 28...Kf8+/–) 29.Qd3+– (29.Qd3 Nf8 30.Qd6 Qc4 31.Qd8 Qa4 32.Qf6 Qc2 33.Ke1 Qb1 34.Kd2+–) 1–0. wybitnytalent (1635) – peterhof, kurnik, 2011.

5.e3 a4 6.Qb2 e6 7.a3 Be7 8.Nf3 d5 9.d4 0-0 10.Nbd2 (10.c5 Qd8+=) 10...Nbd7 (10...Qa5 11.Bd3=) 11.c5+= Qa5 12.Bd3 Ne4 13.0-0 f5 14.Rb1 Ndf6? (14...Nc3!? 15.Ra1 A) worse 15...cb5 16.Nb1 Ne4 17.Bd2 (worse 17.Bb5 Bf6=+) 17...Nd2 18.Nbd2+= (worse 18.Qd2 b6 19.c6 Nb8=); B) 15...Nb5 16.Bb5 Qb5 17.Qb5 cb5=+) 15.Ne5 (15.bc6 bc6 16.Qb6 Bd7+/-) 15...Bd7 (15...Nd7 16.Ndf3 Bf6 17.bc6 bc6 18.Nd7 Bd7 19.Qb6+=) 16.f3 (16.Be4 fe4 17.Nd7 Nd7 18.bc6 bc6+-) 16...Ng5 17.h4 (17.Nd7!? Nd7 18.f4+/-) 17...Nf7+= 18.g3?? (18.Nd7 Nd7 19.g3 Bf6+=) 18...Be8?? (better 18...Ne5!? 19.de5 Ne8-/+) 19.f4 (19.bc6 bc6 20.Nf7 Bf7+=) 19...Nh6 (19...b6!?=) 20.Ndf3 Nhg4 (20...Ne4!? 21.bc6 bc6+=) 21.Bd2 Qa7 22.bc6 (22.Ng5 Ne4 23.Ne6 Ng3 24.Nf8 Nf1 25.Rf1 Kf8 26.Bf5 Nf6 27.bc6 Bc6+-) 22...bc6 23.Qb7 Bh5? (better 23...Ne5 24.Ne5 Ne4 25.Be4 fe4+/-) 24.Nc6 Qb7 25.Rb7 Bd8 26.Nb4 (better 26.Ng5 Re8 27.Bb5+-) 26...Ne4 27.Be1?? (better 27.Be4 fe4 28.Ne5+-) 27...Ne3= 28.Be4 (28.Ne5 Nf1 29.Bf1 Bf6=) 28...Nf1=+ 29.Kf1 fe4 30.Ne5 Bf6 31.Kf2? (31.Nbc6!?=+) 31...Be5-+ 32.de5 Rac8 33.c6 Be8 (33...d4!?-/+) 34.c7=+ Rf7 (34...Rf7 35.Na6 Bc6=+) 0-1. jhonores (2185) - Dapergon98 (2175), Rated Blitz game, lichess.org, 2020.

5.Nf3 Bc5 6.e3 +/– (< 6.Ne5 Bf2 7.Kd1 Nh6=+).

5.Nf3 d6 6.Nc3 =.

5.Nf3 Nc5 6.Qc2 Ne6 7.Nc3 (7.e3 a5=) 7...g6 (7...d6 8.Bb2+=) 8.e3 (8.c5 Qd8+=) 8...Bg7 (8...a5 9.Qa4+=) 9.d4 Qc7 (9...0-0 10.Bd3+=) 10.Bb2 a5 (10...h6 11.Bd3+=) 11.Bd3 (11.b5 0-0+=) 11...ab4 12.ab4 Ra1 13.Ba1 b6 (13...d5 14.0-0+=) 14.0-0+– Bb7 15.Bb2 0-0 16.Ra1 Ra8 17.Ra8 Ba8 18.b5 cb5 19.Nb5 Qb8 (19...Qd8 20.e4+=) 20.Ba3 (20.e4 Qf4 21.d5 Nc5+–) 20...d6 (20...Bf3 21.gf3 d6 22.f4+=) 21.Qb3 (21.d5 Nc5+=) 21...Qc8 (21...Bf3 22.gf3 Qa8 23.Be2=) 22.Nd2+= Qb7 23.f3 Bh6 24.Nf1 Qa6 (24...Qd7 25.Bb2+=) 25.Kf2 (25.e4 Qa5+=) 25...Bb7 (25...Bg7 26.Ng3+=) 26.Ng3 (26.Bb2 Bc6+=) 26...Bg5 (26...Qa8 27.Bb2+=) 27.Ne2 Qa8 (27...Qa5 28.Nec3+=) 28.Nbc3 (28.Bb2 Qf8 29.h3 Nd7+=) 28...Kf8 (28...Qd8 29.Bb2+=) 29.Bb2+– Qa5 30.h3 (30.Na4 Nd7+–) 30...Bh6 (30...Kg8 31.Qb5+=) 31.Bc1 (31.e4 Bd2 32.Nd5 Nd5 33.ed5 Nc7+=) 31...Kg8 32.Nb5 ½–½. zozo – pierred, net–chess.com, 2017.

5.Nf3 d6 6.d4 =.

6.e3 Nc5 7.Qc2 Nce4 8.d3 +–.

6.e3 Be6 7.Bb2 =.

7.Nc3 Nc5 8.Qa2 Nd3 9.Bd3 Bd3 10.cd5 Qc7 11.Bb2 a5 12.dc6 bc6 13.Na4 +=.

7.Nc3 Nc5 8.Qa2 Nce4 9.Bb2 =.

7.Nc3 Nc5 8.Qd1 Nce4 9.cd5 (9.Bb2= Nc3 10.Bc3 e6 11.c5 Qc7 12.Be2 b6 13.Be5+=) 9...Nc3 10.dc3 0-0-0 11.c4 cd5 12.c5 Qc7 13.Bb2 +/–.

7.Nc3 Nc5 8.Qd1 Nd3 9.Bd3 Bd3 10.cd5 Qa6 11.dc6 Qc6 12.Bb2 a5 13.Ne2 =.

7.d4 Nb8 8.cd5 cd5 9.Nc3 =.

7.d4 dc4 8.Bc4 e6 9.Ne5 (9.Nc3 Bd6+=) 9...Bd6= 10.f3 h5 (10...Nc7 11.Be2 Nb5 12.Nc4+=) 11.Nc3 (11.Be2 Be7 12.Bb2+=) 11...Qc7 (11...Rd8 12.Ne2 Nc7 13.e4+/–) 12.f4 (better is 12.e4!? Bh7 13.Bf4+/–) 12...Nb8+= 13.Ne2 (13.0-0 Nbd7+=) 13...h4 (13...b5 14.Bd3=) 14.Bb2 (14.0-0 h3 15.g3 0-0=) 14...Nbd7 (14...b5 15.Bd3=) 15.0-0 Ne4 Black gets strong initiative 16.Rad1 Nb6 17.a4 (17.Bd3 Nd5=) 17...a5 (17...Nc4 18.Nc4 h3 A) worse is 19.Nd6 Qd6 (19...Nd6?! 20.g3=) 20.g3 Qd5 21.Qd5 ed5–/+; B) 19.g3=) 18.b5= Bb4 19.Bc1 (better is 19.bc6!? bc6 20.Bc3=) 19...Nc4–/+ 20.Qc4 Nd6 21.Qb3 (better is 21.b6!? Nc4 22.bc7 Ne5 23.fe5–+) 21...cb5 22.Nd3 Qc4 23.Qc4 bc4 (23...Nc4?! 24.ab5 Bd3 25.Rd3–+) 24.Nb4 ab4 25.d5 (25.Bd2 Bd3 (25...Ra4?! 26.Ra1 b5 27.Bb4–+) 26.Rfe1 Be2 27.Re2 c3–+) 25...Bd3 26.de6 fe6 (26...Be2 27.Rd6 Bf1 28.Kf1 Ra4 29.Ke1–+) 27.Rd3 (27.Rfe1 Ke7–+) 27...cd3 28.Nd4 Kd7 (28...Ke7 29.Rd1–+) 29.Rd1 (29.Nf3 Ke7 30.Ne5 Rhd8 31.Nd3 Ra4–+) 29...Ra4 30.Rd3 (30.Nf3 Rc8 31.Ne5 Ke7–+) 30...Rc8 (30...Ra1 31.Rd1 Rc8 32.Ne2–+) 31.Nb3 (31.Bd2–+) 31...Rc3 (better is 31...Ra1!–+) 32.Rc3= bc3 33.Nc5 Kc6 34.Na4 Ne4 35.Nc3 Nc3 36.Bb2 Nd1 (36...Nd5 37.Bg7 Ne3 38.Kf2 Ng4 39.Kf3 Nh2 40.Ke4=) 37.Bd4+= Kd5 38.Kf1 (worse is 38.Bg7 Ne3 39.Bf6 h3–/+) 38...Kc4 39.Ke1 (worse is 39.Bg7 Kd3+=) 39...Nc3 40.Kd2 (40.Bg7 Ne4=) 40...Ne4 41.Kc2 Nf6 42.g3 hg3 43.hg3 Ne4 44.g4 g6 45.Bb6 Nf6 46.g5 Nd5 47.Bd4? (better is 47.Ba7+=) 47...Nf4–+ (47...Nf4 48.Bf6 Nd3–+) 0–1. Roczniak,Jan – Mglosiek,Wladyslaw, corr Poland, 1985.

8.Bb2 Nc5!? 9.Qd1 Nd3 10.Bd3 Bd3 11.cd5 ed5= 12.Ne5 Bf5 13.Qf3 +=.

8.Bb2 Be7 9.Na4 (9.cd5 ed5 10.Na4 Qc7 11.Be5 Qd7 12.Ba6 ba6 13.Nc5+/–) 9...Qd8 10.Be5 (10.cd5!? Qd5 (10...cd5 11.Bb5 Kf8 12.Ba6 ba6 13.0-0+/–) 11.Qd5 (11.Bc4+= Qe4 12.Ba6 ba6 13.Nc5+=) 11...cd5 12.Bb5 Kf8 13.Rc1+/–) 10...0-0= (10...dc4 11.Qc4 0-0 12.Rc1 Nd7 13.Be2+=) 11.d4? (better is 11.Qb2!?= dc4 12.Bc4 b5 13.Be2+=; 11.cd5 Nb8 12.Nc5 cd5 13.Nb7=) 11...dc4–/+ 12.Bc4? (better is 12.Qc4 b5 13.Qc6 Nb4 14.ab4 Bb4 15.Kd1 ba4 16.Bf6 Qf6 17.Qa4–+) 12...b5–+ 13.Be2 ba4 14.Qa4 Nb8 15.Nd2 (15.0-0 Nbd7–+) 15...Ne4 (15...Nbd7 16.Bf6 Bf6 17.Qc6–+) 16.Rc1? (16.Ne4 Be4 17.f3–+) 16...Nd2 17.Kd2 Bd6 (better is 17...Nd7!? 18.Bg3 c5 19.Rhd1–+) 18.Bd6 Qd6 19.Bf3 e5 20.b5 e4 21.Bd1 (21.Be2 cb5 22.Qb5 Qg6–+) 21...cb5 22.Qb5 Bd7 23.Qb2 (23.Qc5 Qg6 24.Qh5 Qe6–+) 23...Nc6 24.Ba4 (24.Rc5 Rac8 25.Ke1 Ne7–+) 24...Nd4 (better is 24...Rab8 25.Qc3 Ne5 26.Bd7 Qd7 27.Rc2–+) 25.Qd4 Qd4 26.ed4 Ba4 27.Rhe1 (27.Rc7 Bb3–+) 27...f5 28.Rc4 Bb5 29.Rc5 Bd7 (29...Bd3!? 30.f3–+) 30.Rb1 Be6 31.Rb7 Rf7 32.Rf7 Kf7 (32...Bf7?! 33.Rf5 Rd8 34.Ke3–+) 33.d5 (33.Rc7 Kf6 34.Ke3–+) 33...Rd8 34.Rc7 Rd7 35.Rd7 Bd7 36.Ke3 Ke7 0–1. Schmidt,Alexander – Ommen,Tobias, NRW–chT U18 Germany, 1994.

8.Nd4 dc4 9.Bc4 Bg4 =.

8.Nd4 dc4 9.Bc4 Bg6 10.0-0 Bd6 11.f4 0-0 12.Bb2 Qc7 13.Ba6 +/–.

8.Nd4 Bg6+= 9.cd5 (9.c5 Qc7 10.Ba6 ba6 11.f4 a5 12.0-0 Be7 13.b5+=; 9.Na4 Qc7 10.cd5 Nd5 11.Ba6 ba6 12.Bb2 a5 13.b5+=) 9...Nd5 10.Na4 Qc7 11.Ba6 ba6 12.Bb2 a5 13.b5 +=.

4.Bb2 Nd7 5.e3 Ngf6 6.Nf3 a5 7.a3 (7.ba5 Qa5 8.Bc3 Qf5=) 7...ab4 (7...Nc5 8.Qc2 ab4 9.ab4 Ra1 10.bc5 Rb1 11.Qb1 Qc5 12.Bf6 ef6 13.d4 Qa5 14.Nd2=+) 8.ab4 Ra1 (8...Nc5 9.Qc3 (worse 9.Ra8 Nb3 10.Rc8 Kd7–/+) 9...Ra1 10.Ba1=) 9.Ba1= c5 10.b5 e5 11.Be2 e4 12.Ng5 h6 13.Nh3 g5 14.0-0 (14.Bg4 Qd8+=) 14...Ne5= Black plans g4 15.Be5 (15.Nc3!? Bg7 16.Qc2+=) 15...de5=+ 16.Qb2 (16.Kh1 Bh3 17.gh3 Qe6=+) 16...Bd6 (16...Qd6 17.Kh1 Bg7=+) 17.Nc3=+ g4 (better 17...Qd8!?=+) 18.Nf4+= ef4 (better 18...Qd8 19.Nfd5 Nd5 20.Nd5 0-0+=) 19.Ne4?? (better 19.Nd5 Nd5 20.Qh8 Bf8 21.cd5+–) 19...Be7–+ (19...Ne4?! 20.Qh8 Bf8 21.ef4=) 20.Nf6 (20.ef4!? 0-0 21.d3–+) 20…Qf6 (20...Qf6 21.Qa1 0-0–+) 0–1. GuestVYPF – GuestMBMQ, freechess.org, 2018.

4.Bb2 f6 5.d4 d5 6.c5 Qc7 7.Nf3 b6 8.cb6 ab6 9.b5 Ra5 10.Nc3 Bd7 11.bc6 Bc6 12.Rc1 Qd6 13.Qb6 Ra6 14.Qb3 Qd7 15.Qb8 Kf7 16.e4 Ra8 17.Qf4 g5 18.Ne5 Ke8 19.Nd7 Kd7 20.Qg4 Ke8 21.Qe6 Bd7 22.Bb5 Ra7 23.Nd5 Rb7 24.Rc8# 1–0. Machete99 – guest1303, ICC, 2002.

4.e3 Nf6 5.Nc3 g6 (5...e5 6.d4=) 6.Nf3 (6.d4 Bg7=) 6...Bg7 (6...Na6 7.Ba3=) 7.Be2 (7.d4 Na6 8.Rb1 c5 9.bc5 Qb3 10.Rb3 dc5+=) 7...0-0 (7...Na6 8.Ba3=) 8.a3 (8.d4 a5 9.ba5 Qa5=) 8...Nbd7 (8...a5 9.d4=) 9.Bb2 (9.d4 c5=) 9...c5 (9...a5 10.d4+=) 10.0-0+= e6 (10...Re8 11.d3+=) 11.d4 cd4 12.ed4 a6 13.Rfc1 Qd8 (13...Qc7 14.a4+=) 14.c5 dc5 (14...Qc7 15.Rc2+=) 15.dc5 Nh5 (15...Qc7 16.Rc2+=) 16.Ne4+– Ndf6 (16...Nhf6 17.Nd6+–) 17.Rd1 Qe7 18.Nd6 Nf4 19.Bc4 1–0. pierred – alexp, net–chess.com, 2017.

4.Nf3 e5 5.d3 Nf6 6.Be3 (6.Be3 Qc7 7.Bg5=). Yeung,Chun Keung (1740) – Akman,Ozgur, WSTT/3/06/1 – Sokolsky Opening, A00, 2006.

5.Nf3 Na6 6.a3 Bf5 (6...Nf6 7.d4 e4 8.Ng5=) 7.d4 e4 8.Nfd2 (8.Qc2 Nf6+=) 8...Qc7 (8...Nf6 9.Nc3=) 9.Nc3+= Nf6 10.Qc2 Will e4 fall? 10...d5 11.cd5 (11.Qa4 Bd7+=) 11...cd5= 12.Qb3 (12.Bb2 Rc8=) 12...Qd6 13.Bb5 (13.Bb2 Nc7=) 13...Bd7 14.0-0 (14.Bd7 Qd7 15.Bb2 Be7=) 14...Be7 (14...Bb5 15.Nb5 Qd7 16.Nc3=) 15.Bd7 (15.Ba6 ba6 16.f3 ef3 17.Nf3 Rc8=) 15...Qd7 16.Bb2 0-0 17.Rac1 (17.f3 ef3 18.Nf3 Rae8=) 17...Rac8 (17...Nc7 18.Rc2=) 18.Rc2 (18.b5 Nc7=) 18...Nc7 (18...b5 19.f3 ef3 20.Rf3=) 19.Rfc1 (19.Qa4 Nb5 20.Rfc1 Nc3 21.Qd7 Nd7 22.Rc3 Rc3 23.Rc3 Bd6=) 19...Ne6 (19...Bd6 20.Qa4 b5 A) 21.Qa7? Ra8 22.Qb6 Rfb8 23.Nd5 Ncd5–+ (23...Rb6 24.Nb6 Qd8 25.Na8 Qa8 26.Rc7 Bc7 27.Rc7+/–; 23...Nfd5?! 24.Qc6 Qe6 25.Ne4 Bh2 26.Kh2 Qe4 27.Qd6–+); B) 21.Qa5=) 20.f3 (20.b5 Rc7=) 20...ef3 21.Nf3 Rc7 22.Ne5 Qd8 23.Nb5 (23.a4 Re8=) 23...Rc2 24.Rc2 (24.Qc2 Qb6 25.Qa4 a6=) 24...a6+= 25.Nc3 Bd6 26.Rd2 (26.Nd3 Ng4 27.Nd5 Bh2 (worse is 27...Nh2 28.e4+=) 28.Kf1 Qd5 29.Qd5 Ne3 30.Kf2 Nd5–+) 26...Nc7 27.Re2 Re8 (27...Ne4 28.Qc2 Nc3 29.Qc3+=) 28.e4= de4?? (better is 28...Be5 29.de5 Ne4 (worse is 29...Re5 30.Nd5 Rd5 31.ed5+/–) 30.Nd5 Qd5 31.Qd5 Nd5 32.Re4 Rc8=) 29.Nf7+– (29.Nf7 Bh2 30.Kh2+–; 29.Qf7?! Kh8 30.h3 Re7=) 1–0. Pandit – Sutton, email 4AMM–09, 1997.

5.Nf3 Be6 6.d4 e4 (6...Nf6 7.Nc3=) 7.Nfd2 (7.Ng5 d5 8.c5 Qc7 9.Ne6 fe6+=) 7...d5 8.b5 a6 9.a4 (9.bc6 Qc6 10.Nc3 dc4 11.Bc4 Bc4 12.Nc4 Nd7+=) 9...ab5 10.ab5?? (better 10.Ba3=) 10…Ra1-+ 0-1. jhonores (2230) - dRr0x0rZZ (2160), Rated Blitz game, 2020.

4.Bb2 Nf6 5.c5 Qc7 6.Nf3 h6 7.e3 Be7 8.a4 (8.Na3 b5+=) 8...0-0 9.d4 (9.Be5 d6 10.cd6 Bd6 11.Bf6 gf6+=) 9...d5 (9...d6 10.Bd3=) 10.Bd3 a5 11.b5 (better 11.ba5 Nbd7 12.0-0=) 11...cb5?? (better 11...Nbd7=) 12.ab5+/- b6 (better 12...Ne4!?+/-) 13.c6+- Bb4 14.Nc3 Ne4 15.0-0 Nc3 16.Bc3 Bc3 17.Qc3 Qd6 (17...Nd7 18.Bc2+-) 18.Qc2 (18.Bc2 Ra7+-) 18...Qb4 (18...Ra7 19.h3+-) 19.Ra4 Qd6 20.Bh7 Kh8 21.Ne5 Qe7 (21...g6 22.Bg6! fg6 23.Ng6 Kg7 24.Nf8 Qf8 25.e4+-) 22.f4 Ra7 23.Rf3 (23.Bd3 Rc7 24.Qe2 Kg8+-) 23...Qf6 (23...Qd6 24.Bd3+-) 24.Rh3 (better 24.Bd3+-) 24...Rg8 (24...Qd8+-) 25.c7 Rb7 (25...Na6 26.ba6 Rf8+-) 26.cb8Q Rb8 27.Bg8 Kg8 28.Qc7 Ra8 29.Qc6 Ra7 30.Qc8 Kh7 31.Nc6 Re7 32.Rg3 Qf5 33.Ne7 Qb1 34.Kf2 Qb2 (34...Qc2 35.Qc2 g6 36.Rg6 h5 37.Qc8 fg6 38.Qg8 Kh6 39.Qg6) 35.Kf3 Qb1 (35...Qg2 36.Rg2 h5 37.Qg8 Kh6 38.Qg7) 36.Qg8 1-0. DEFFM – GuestVYFC, freechess.org, 2021.

5.b5 cb5 6.cb5 Na6 7.d4 (7.Nc3 Nc5 8.Qd1 d5=) 7...Qd4 (7...Nc7 8.e3=) 8.ba6+= Qa1 9.ab7 Rb8 10.bc8Q Rc8 11.Kd1 Nf6 (11...Qd4 12.Bd2 Qf2 13.Nf3=+) 12.Qb2= Qb2 13.Bb2 Rb8 14.Kc2 Bd6 (14...d5 15.e3=) 15.Nc3 (15.e3 Ke7 16.Nc3 Rhc8=+) 15...Ke7 16.e3 Rhc8 17.Bd3 Ng4 (17...Be5 18.Nge2 Ng4 19.Rf1 Nh2 20.Rb1–/+) 18.Nh3 Be5 19.Rc1 a4 20.Ba1 (20.Bh7? Rb3 21.Kd1 Bc3 (21...Rcc3?! 22.Bc3 Bc3 23.Bc2 Ra3 24.Ba4–/+) 22.Bc3 Rcc3–+) 20...Rb3 21.Kd2 Ra3 22.Bb2 Rb3 23.Na4 Ra8 24.Be5 (24.Bc2 Rb2 (24...Ra4 25.Bb3 Bb2 26.Rb1+–; 24...Bb2?! 25.Rb1 Rb4 26.Nb2–/+) 25.Nb2 Bb2–+) 24...Rd3! 25.Kd3 Ne5 26.Kc3 Ra4 27.Kb3 Rh4 (27...Ra7 28.Rc2–+) 28.Ra1 (28.Rc5 Nf3!–+) 28...h6 (28...Nf3 29.Nf4 Nh2 30.Ra7–+) 29.Re1 (29.Kc3 d5–+) 29...g5 30.f4 (30.Rh1 d5–+) 30...gf4 31.ef4 Ng4 32.Ng1 (32.Kc3 Nh2 33.Re2 d5–+) 32…Rh2 (32...Rh2 33.Re2 d5–+) 0–1. pierred – pcmvr, net–chess.com, 2017.

5.b5 cb5 6.cb5 Bc5 7.e3= Nf6 8.d4 (8.Qc2 0-0=) 8...Be7 9.Nc3 (9.Bd3 d5=) 9...0-0 10.Bd3 d6 (10...d5 11.Nf3+=) 11.Nf3+= Nbd7 (11...Bd7 12.0-0+=) 12.0-0 e5 (12...d5 13.a4+=) 13.Bb2 Re8 (13...ed4 14.ed4 Qd8 15.Rfe1+=) 14.Bc4+– Rf8 15.Ng5 d5 16.Bd5 Nd5 17.Nd5 Qe6?? (better 17...Qd8 18.Ne4 ed4 19.Bd4 b6+–) 18.Ne6 (18.Ne6 fe6 19.Ne7 Kf7 20.Nf5 ed4 21.Rac1+–) 1–0. pierred – jlbaf, net–chess.com, 2017.

5.b5 cb5 6.cb5 d5 7.e3 Nd7 8.d4 Ngf6 9.Nf3 Bd6 10.Bd3 0-0 11.0-0 Qd8 12.Bb2 b6 (12...a4 13.Qc2=) 13.Nc3 Bb7 14.Na4 Rc8 15.Rac1 Qe7 16.h3 Bb8 17.Rfd1 Qd6 18.Ne5 Rc1 (18...Ne5?? 19.de5 Qd8 20.ef6 gf6 21.Rc8 Bc8 22.Qc2+-) 19.Rc1 (worse 19.Bc1 Ne5 20.de5 Qe5-/+) 19...Rc8 (19...Bc7 20.f4=) 20.Rc8 Bc8 21.f4 Bc7 22.Qc2 (22.Nc3 A) 22...Ne5? 23.fe5 (23.de5?! Qc5 24.Kf2 Nh5+/-) 23...Qd8 24.ef6+-; B) 22...Bd8+=) 22...h6 23.g4 Ne8 24.Bh7 Kf8 25.Bd3 Kg8 26.Bh7 Kf8 27.Bd3 Kg8 ½-½. jhonores (2025) - Sasha60 (2005), Rated Bullet game, lichess.org, 2020.

5.Bb2 Nf6 6.e3 b6 7.d4 (7.Bf6 gf6 8.d4 a5=) 7...a5 (7...d6 8.cb6 ab6 9.Nf3=) 8.a3 (8.cb6 Qb6 9.ba5 Qa5 10.Bc3 Qf5=) 8...ab4=+ 9.ab4 Ra1 10.Ba1 d6 11.cd6 (11.cb6 Qb6 12.b5 Be7=) 11...Bd6=+ 12.Nf3 b5 13.Be2 Na6 14.Nbd2 Bb7 (14...Bb4 15.Bc3 Bd6 16.0-0=+) 15.Bc3 (15.0-0 0-0=+) 15...Nd5 Increasing the pressure on the isolated pawn on b4 16.0-0 Nc3 (16...0-0 17.Rb1=+) 17.Qc3 Bb4 18.Qc2 0-0 19.Ne4 (19.Rb1 Be7=+) 19...Be7 (19...f5 20.Neg5 Qd6 21.Qb3=+) 20.Rc1 (20.Rb1 f5 21.Ned2 Nb4=+) 20...Ra8 (20...f5 21.Ng3 Qd6=+) 21.Ne5 (21.Neg5 g6=+) 21...Nb4 (better 21...c5–/+) 22.Qc3? (better 22.Qb3=+) 22...Na2–+ 23.Qc2 Nc1 (23...Nc1 24.Qc1 Qa5–+) 0–1. jlbaf – pcmvr, net–chess.com, 2017.

5.d4 a5 6.b5 cb5 7.Qb5 Nc6 8.e3 d6 9.Ba3 Bd7 10.cd6 Bd6 11.Qd3?? (11.Bd6 Qd6 12.Qb7 Rb8=) 11...Bh2 (better is 11...Nb4 12.Qc4 Nc2 13.Kd1 Qc4 (13...Na3?! 14.Qc7 Ba4 15.Ke2 Bc7 16.Na3=) 14.Bc4 Na3 (14...Na1?! 15.Bd6 Rd8 16.Bf4–/+; 14...Ba3?! 15.Kc2 Ba4 16.Kc3=+) 15.Na3 Ba3–+) 12.Nf3+= Bd6 13.Bd6 (13.Rh7 Rh7 14.Bd6 Qd6 15.Qh7 Qf8+=) 13...Qd6= 14.Rh7 Nb4 15.Rh8 Nd3 16.Bd3 Ke7 17.Nbd2 (17.Bh7=) 17...Qa3 (17...Rc8 18.Ne5=+) 18.Ke2 (18.Bh7 Rc8 19.Rg8 (19.Bg8?? Rc1 20.Ke2 Bb5 21.Nc4 Bc4 22.Kd2 Qc3) 19...Rc1 20.Rc1 Qc1 21.Ke2=) 18...Bc6 (18...Rc8 19.Ne5 Qc3 20.Rhh1=) 19.Nc4 (19.Ne5 Bd5= (19...Bg2? 20.Rg1 Bd5 21.Rg7+–)) 19...Qc3 20.Rhh1 (20.Rb1 Bd5 21.Nfe5 Rc8+= (21...Bg2? 22.f3 Rb8 23.Rh7+–)) 20...Be4=+ 21.Nce5 (21.Be4 Qc4 22.Bd3 Qa4=+) 21...Nf6–/+ 22.Rhc1 Qb2 (22...Qa3 23.Rc2=+) 23.Nd2= Bg2 (23...Bd3 24.Nd3 Qb5 25.Rab1 Qh5 26.Nf3+=) 24.Rab1 Qa2 25.Rc7 Ke8 (25...Kd8 26.Rf7 Bc6=) 26.Rf7 (26.Bb5 Kf8 27.Rf7 Kg8+–) 26...Be4?? (26...Ne4 27.Be4 Be4+/–) 27.Rg7 (better is 27.Bb5 Kd8 28.Bc4+/–) 27...Rb8? (27...Bd3 28.Kd3 Ra7+–) 28.Rb6 (28.Bb5 Kd8 29.Rc1 Bf3 30.Nef3 Qd5+–) 28...Bd3 29.Kd3 a4 (better is 29...Qa3 30.Ke2 Qa2+–) 30.Ng6?? (better is 30.Ndc4 Qf2 31.Re6 Kd8 32.Rd6 Ke8 33.Rf6 Qf6 34.Rg8 Ke7 35.Rb8 Qf1 36.Kc2 Qe2 37.Nd2+–) 30...Nd7= 31.Re6?? (better is 31.Rg8 Kf7 32.Rb8 Kg6 33.R8b7 Nb6 34.Rb6=) 31…Qe6–+ (32.Re7 Qe7 33.Ne7 Ke7–+) 0–1. Drefke – Diener,Rudolf, corr SOK–87–14, 1987.

5.d4 d5 6.cd6 (6.Nf3 Nd7=) 6...Bd6 (6...Qd6 7.Nf3 Qb4 8.Qb4 Bb4 9.Bd2=+) 7.Nf3= Nf6 8.e3 0-0 9.Be2 Nbd7 10.0-0 e5 11.h3 e4 12.Nfd2 Nd5 (12...Nb6!?=+) 13.Ne4+= Bb4 14.Bc4 Be7 (14...N7b6 15.Bd3=) 15.Bd5+= cd5 16.Qd5 Nf6 17.Nf6 Bf6 18.Bd2 Be6 19.Qa5 (19.Qf3 Rfd8+=) 19...b6 (19...Qc2 20.Rc1 Qg6 21.Kh1=) 20.Qa4 Rac8 21.Rc1 Qb7 22.Nc3 g5 (22...Rc4 23.Qb5=) 23.Qd1 Kg7 24.Ne2 (24.Qh5+/-) 24...h5? (better 24...Rfd8!?+=) 25.Ng3+- h4 26.Nh5 Kg6 27.Nf6 Kf6 28.Rc8 (28.Bb4 Rfd8+-) 28...Rc8+/- 29.Qh5 Qe4 30.Qh6 (better 30.f4!? gf4 31.Qh4 Kg7 32.Rf1+/- (32.Qf4?! Qf4 33.ef4 Rc2+=)) 30...Qg6+= 31.Qg6 Kg6 32.Rc1 (better 32.e4!? Rc2 33.Be3=) 32...Rc1=+ 33.Bc1 Ba2 34.e4 f5 35.f3 Bb1 36.e5 Ba2 37.Kf2 Bd5 38.Ba3 g4 (38...a5 39.Be7=+) 39.fg4 (39.Ke3!?=) 39...fg4=+ 40.hg4 Kg5 41.Bd6 Kg4 42.Bb8 a6 43.Bc7 b5 44.Ba5 Kf5 45.Bd2 (better 45.Bd8!?-/+) 45...Ke4-+ 46.Bc3 Kd3 47.Ba5 Kd4 48.g4 (48.Bd8 Ke5 49.Bh4 Bg2-+) 48...hg3! 49.Kg3 Ke5 50.Kf2 Kd4 51.Ke2 Kc4 52.Kd2 Kb3 53.Kc1 Be4 54.Be1 b4?? (better 54...Ka4-+) 55.Bb4-/+ Kb4 (better 55...Kc4!?-/+) 56.Kb2= a5 57.Ka1 a4 58.Kb2 a3 59.Ka1 Ka4 60.Ka2 Bd5 61.Ka1 Kb3 62.Kb1 Bc4 63.Ka1 Bd3 ½-½. jhonores (2260) - CoachChrisRodriguez (2275), Rated Blitz game, lichess.org, 2020.

5.d4 Nf6 =.

5.e3 d5 6.Bb2 e5 7.Be2 a5 (7...Nf6 8.Nf3 Nbd7 9.d4=) 8.a3 (8.d4 ab4 9.Qb4 Nd7=) 8...Bf5 (8...Nd7 9.Nf3=) 9.d3 (9.Nf3 Nd7=) 9...ab4 10.ab4 (worse is 10.Qb4 Nd7 11.d4 b6–/+) 10...Ra1 11.Ba1 Nd7 12.Nf3 Be7 (12...b6 13.cb6 Qb6 14.Ne5 Bb4 15.Kd1=) 13.Nbd2 (13.0-0 Ngf6=) 13...Nh6 14.Qb2 Will e5 fall? (14.Qa4 0-0=) 14...f6 15.e4 de4 (15...Be6 16.0-0=) 16.de4 Be6 17.Bc4 Bc4 (17...Bg4 18.h3 Bf3 19.Nf3+=) 18.Nc4+= b6 19.cb6 Nb6 20.Nfd2 (better is 20.Qc3!?=) 20...Nc4+= 21.Nc4 0-0 22.Qb3 Nf7 23.0-0 (23.Bc3 Qd7=) 23...Rb8 24.Bc3 c5 25.b5 Qb7 26.b6 Qe4 27.Ra1 Qd5 28.Qb5 (28.Rd1 Qe6 29.Rb1 Qf5+=) 28...Nd6 29.Nd6 Bd6 30.Qd7 (30.Rb1 e4+=) 30...Qd3 (30...e4 31.Kh1–/+) 31.Be1+= Qd4 32.Ra4 (32.Ra7 Bf8 33.Qc7 Qd1–/+) 32...Qd1–/+ Threatening mate... how? 33.Kf1 (better is 33.Re4!?–/+) 33...Qd3–+ 34.Kg1 Qb1 Threatening mate: Qxe1 35.g3? (35.Kf1 Qb6 (worse is 35...Rb6 36.Ra8 Rb8 37.Qe6 Kf8 38.Qd6 Kf7 39.Rb8+–) 36.Qe6 Kh8–+) 35...Bf8 (35...Qe1 36.Kg2 Bf8 37.Qd5 Kh8 38.Ra8 Ra8 39.Qa8=; 35...Rb6? 36.Ra8 Rb8 37.Qe6 Kf8 38.Qd6 Kf7 39.Qb8 Qe1 40.Kg2 Qe4 41.Kf1+–) 36.Kg2 Rb6 (36...Qe1?! 37.Qd5 Kh8 38.Ra8 Ra8 39.Qa8=; 36...Qb6?! 37.Ra7–+) 37.Qd5 Kh8 38.Ra8 (38.Bd2 Rb8–+) 38...Rb8 39.Ba5 h6 (39...Qb5 40.Bc7 Re8 41.h3–+) 40.Bc7 Ra8 41.Qa8 Kh7 42.Be5 fe5 43.Qf8 c4 44.Qf3 Qc2 45.h4 Qd3 46.h5 (46.Qd3!? cd3 47.Kf3 e4 48.Ke3 Kg6–+) 46...Qf3 47.Kf3 g6 48.hg6 Kg6 (48...Kg6 49.Ke4 Kf6–+) 0–1. Gajda,Leszek – Brzoza,Miroslaw, corr 2AMM Poland, 1994.

5.e3 Qe5 6.Bb2 Qf5 7.Nf3 Nf6 (7...d6 8.cd6 Nd7 9.Na3+/-) 8.Bd3 (8.Be5 a5+/-) 8...Qg4+= 9.Be2 (9.0-0 d6 10.Rc1 dc5 11.bc5 Nbd7=) 9...Qg2 10.Rg1 Qh3 11.Ng5 (better 11.Be5!?=) 11...Qh2-/+ 12.Nf3 Qh3 13.Bf6 gf6 14.Nc3 d6 (14...d5!?-/+) 15.Ne4=+ Qf5 16.Nd6 Bd6 17.cd6 Nd7 (17...e5=+) 18.0-0-0 (18.Rc1!?=) 18...Ne5 (18...a5 19.b5 Qc5 20.Kb1 Qd6 21.d4-/+) 19.Nd4 Qe4?? (19...Qf2!? 20.Rdf1 Qh4-/+) 20.d3 (better 20.f4!?+/-) 20...Qd5= 21.Qd5 cd5 22.e4 (22.f4 Nc6 23.Nc6 bc6=+) 22...Kd7-/+ 23.f4 (23.ed5 Ng6-/+) 23...Nc6 (23...Ng6 24.Rdf1 de4 25.de4 Kd6 26.Nb5 Ke7 27.Nc7-+) 24.Nc6=+ bc6 25.e5 fe5 26.fe5 Ba6 (26...a5 27.Rdf1 ab4 28.Rf7 Kd8 29.Rfg7+=) 27.Kd2 (better 27.Rg7 Raf8 28.Rf1+-) 27...Rhb8?? (27...Rag8!?=) 28.a3?? (better 28.Rdf1 Rf8 29.Rg7+-) 28...Rg8+/- 29.d4 (better 29.Rdf1 f5 30.Rh1+/-) 29...f5?? (29...Be2 30.Ke2 h5 31.Rc1=) 30.ef6 (30.Ba6 Raf8 31.Rc1 Ke8+-) 30...Raf8?? (better 30...Be2 31.Ke2 h5=) 31.Rg8+- Rg8 32.Ba6 Kd6 33.Rf1 (33.Rh1 Rf8+-) 33...Rf8 34.Ke3 (34.Bd3 h6+-) 34...h5 35.Be2 h4 36.Bg4 (36.f7 e5+-) 36...a6 (36...e5 37.de5 Ke5 38.f7+-) 37.f7 Ke7 38.Kd3 (better 38.Bh5+-) 38...Rf7 39.Rf7 Kf7 40.Ke3 Kf6 41.Kf4 Kg6 (41...Ke7+-) 42.Ke5 Kg5 43.Be6 Kh5 44.Bh3 Kg5 45.Kd6 Kf4 46.Kc6 Kg3 47.Bf5 (better 47.Bc8 Kf4+-) 47...h3 (47...Kf4 48.Bc8 Ke3+-) 48.Bh3! Kh3 49.Kd5 Kg4 50.Kc5 Kf5 51.d5 Ke5 52.Kc6 Kf6 53.d6 Ke6 54.Kc7 a5 55.d7 (55.ba5 Kd5 56.a6 Ke4 57.a7 Kf3 58.a8Q Kg4 59.Qe4 Kh3 60.d7 Kg3 61.d8Q Kf2 62.Qd2 Kg3 63.Qdg2) 55...ab4 56.ab4 Ke5 57.b5 Ke4 58.b6 Ke3 59.b7 Ke2 (59...Kd4 60.d8Q Ke5 61.Qd6 Ke4 62.b8Q Kf5 63.Qbf8 Kg4 64.Qff4 Kh5 65.Qdh6) 60.d8Q Ke1 (60...Ke3 61.Qe7 Kd3 62.b8Q Kc4 63.Qbb4 Kd5 64.Qed6) 61.b8Q Kf2 (61...Ke2 62.Qb3 Kf1 63.Qd2 Kg1 64.Qbd1) 62.Qb6 (62.Qd2 Kf3 63.Qg8 Ke4 64.Qgd5) 62...Kf3 (62...Ke2 63.Qg1 Kf3 64.Qd5 Kf4 65.Qgg5) 63.Qe6 (63.Qe6 Kg3 64.Qg5 Kf2 65.Qge3 Kg2 66.Q6h3; 63.Qdf6 Ke2 64.Qbf2 Kd3 65.Q6d4) 1-0. Antares_Sco (1820) - johnniewalkerblack (1870), Hourly SuperBlitz Arena, lichess.org, 2016.

5.Nf3 Nf6 6.Bb2 Be7 7.e3 0-0 8.Qc2 h6 9.Be5 d6 10.cd6 Bd6 11.Bd6 Qd6 12.d4 Qb4 13.Nbd2 Nbd7 14.Bd3 Nd5 15.0-0 Qe7 16.a3 e5 17.Rfe1 ed4 18.ed4 Qd6 19.Ne4 Qc7 20.Rac1 Nc5 (20...Nc5 21.Nc5 Qd6+–). Pachurka,Roland – Kleine,Joachim, DESC, 2006.

4.a4 a5 5.b5 d5 6.e3 e5 7.Ba3 Ba3 8.Na3 0-0 9.Rc1 d4 10.c5 Qd8 11.Nc4 Nbd7 12.Nb2 Re8 13.Nf3 Ne4 14.Bc4 Qf6 (14...Qe7 15.Nd3+=) 15.Nd3= Nec5 16.Nc5 Nc5 17.Bf7 Qf7 18.Qf7 Kf7 19.Rc5 de3 (19...cb5 20.Rb5 Kf6 21.0-0=) 20.fe3+/– cb5 (better is 20...e4 21.Nd4 Bd7+/–) 21.ab5 (21.Ne5 Re5 22.Re5 ba4+–) 21...h6 (better is 21...e4 22.Ng5 Kg8=) 22.Ne5+– Kg8 23.d4 a4 24.0-0 a3 25.Ra1 a2 26.Rc2 Be6 27.e4 Bb3 (27...Ra4 28.Rd2=) 28.Rc7 (28.Rb2 Ra3+/–) 28...Rec8 (28...Ra4!? 29.Nf3 Rb4+=) 29.Rb7+/– Rc2 30.Nd3 Rd2 31.Nc5?? (31.Nc1!? Bc4 32.d5+/–) 31...Bc4?? (better is 31...Rd1 32.Kf2 Ra1 33.Nb3 Rb1–+) 32.d5 (better is 32.h4 Rb2 33.Kh2 Bb5 34.Ne6=) 32...Rb2–+ 33.Ra2 (33.g3–+) 33...Raa2 (33...Raa2 34.Rg7 Kg7 35.Ne6 Kg8 36.h3 Rg2 37.Kh1 Rh2 38.Kg1 Rag2; 33...Rba2?! 34.h3–/+; 33...Ba2?! 34.h4–/+) 0–1. blackiwhite (1715) – cstefan1 (1750), kurnik, 2011.

4.Bb2 a5 5.b5 cb5 6.cb5 a4 7.Qc2 Qb5 8.Qc8 1–0. guest1005 – guest1928, ICC, 2002.

4.Bb2 d5 5.c5 Qc7 6.Nf3 Nbd7 7.Nc3 (7.d4 b6=) 7...a5 (7...e5 8.d4=+) 8.a3 (8.d4 ab4 9.Qb4 e5=+) 8...b6 (8...e5 9.Na4=+) 9.cb6= Nb6 10.Na4 Nbd7 11.e3 (11.b5 cb5 12.Nc3 Qb7 13.Qb5 Rb8 14.Qb7 Bb7=) 11...ab4 12.ab4 e5 13.b5 c5 (13...Qb8 14.d4 e4 15.Nd2 cb5 16.Bb5=) 14.b6 Qb8 15.Bb5 Bd6 16.d3 0-0 17.0-0 (17.Rb1 Ba6 18.Bc6 Bb7=+) 17...Bb7 18.Nd2 e4 (18...Rc8 19.Rfb1=) 19.de4 Bh2 20.Kh1 c4 (20...Be5 21.Bd7 Nd7 22.ed5=) 21.Qc2 Be5 (worse 21...de4 22.g3 (worse 22.Qc4 Bd5 23.Qe2 Be5=+; worse 22.Bc4 Be5=+) 22...Bg3 23.fg3+=) 22.f4 (22.ed5 Bd5 23.Be5 Ne5=) 22...Bb2 23.Qb2 Qd8 (23...de4 24.Nc4 (worse 24.Bc4 Ng4–/+) 24...Bd5 25.Rfb1=) 24.Qd4 Ng4 25.Kg1 Ndf6 26.g3 (26.Nc3 Ne3 27.Ra8 Ba8=+) 26...Nh5 27.Kg2 Qf6 28.Rg1 (28.Rfb1 Rfb8=) 28...Qg6 (28...Rfd8 29.Qf6 Nhf6 30.Nc5=+) 29.Nc5 Ra1 30.Ra1 Ng3 (30...Qb6 31.Bd7 Bc8 32.Ra8+–) 31.Kg3 Ne3 32.Kf3 Nc2 (32...Nc2 33.Qe5 de4 34.Nde4 Be4 35.Ne4 Na1 36.Bc4 Qg1=) 0–1. pierred – zozo, net–chess.com, 2017.

4.Bb2 d6 5.e3 =.

4.Bb2 Ne4 5.e3 e6 6.c5 Qc7 7.Nf3 f6 8.Bd3 Ng5 9.Ng5 fg5 10.0-0 d6 11.f4 dc5 12.fg5 cb4 13.Bc4 Bd6 14.Bg7 Qg7 15.Be6 Qe5 16.Bf7 Kd8 17.g3 Rf8 18.d4 Qg5 19.Nd2 Bg3 20.Nf3 Bh2 21.Kh2 Qh6 22.Kg1 Qg7 23.Kh2 Rf7 24.Ng5 Rf1 25.Rf1 Nd7 26.Ne6 1-0. poputchik (1630) - PAPA_BYAN (1705), Rated Classical game, lichess.org, 2014.

4.Nc3 e5 5.Nf3 =.

4.Nc3 e6 5.a3 (5.c5 Qc7=) 5...d5 (5...a5 6.b5=) 6.e3 Be7 (6...dc4 7.Bc4 Bd6 8.d4=) 7.c5 (7.d4 0-0=) 7...Qc7 8.Bb2 (8.d4 Nbd7=) 8...a5 (8...e5 9.Nf3 Nbd7 10.Be2+=) 9.Nf3 ab4 (9...0-0 10.d4=) 10.ab4 Ra1 11.Ba1 0-0 (11...b6 12.Na4 bc5 13.Nc5=) 12.Na4 (12.Nd5!? ed5 13.Be5+=) 12...Nbd7= 13.Be2 (13.d4 b5 14.cb6 Nb6=) 13...b6 (13...e5 14.0-0=) 14.cb6 Nb6 15.Be5 Qa7 16.Nc5 Nbd7 17.Nd7 Bd7 (17...Nd7 18.Bc3=) 18.0-0 Ra8 19.Ra1 Qb7 20.Rb1 Ne8 21.Ne1 (21.d4 Nd6=) 21...Bd6 (21...f6!? 22.Bc3 Nd6+=) ½–½. Mandak,P – Melich,J, 1999.

4.e3 Na6 5.a3 g6 6.Bb2 Bg7 7.Nf3 0-0 8.Be2 d6 9.0-0+= Be6 10.Ng5 Nc5 11.Qc2 Ncd7 12.Ne6 fe6 13.d4 d5 14.c5 Qc7 15.Nc3 e5 16.b5 ed4 17.ed4 e5 18.de5 Ne5 19.Na4 (19.Rad1 Nfg4 20.g3 Nf3 21.Bf3 Rf3=) 19...Nfg4 20.h3?? (20.Be5 Ne5 21.bc6 Qc6 22.Rae1+=) 20...Nf3! (20...Nf3 21.Bf3 Qh2) 0–1. Petherick,Adrian – Short,Nigel, London, 1975.

4.e3 e5 5.c5 Qc7 6.Nc3 d5 7.Nce2 (7.d4 Nbd7=+) 7...Be6 8.d4 ed4 9.ed4 b6 10.Nf3 Nbd7 11.Bf4 Qc8 12.Ng5 Bg4 (12...a5 13.Ne6 fe6 14.cb6 ab4 15.Bc7=) 13.f3+= Bh5 14.g4 (14.Ng3!? h6 15.Nh3+=) 14...Bg6=+ 15.Ng3 bc5 (15...h6 16.Nh3 A) worse 16...bc5 17.bc5 (worse 17.dc5 a5–/+) 17...Be7 18.Bd3=; B) 16...a5 17.cb6 Bb4 18.Kd1 Qb7–/+ (18...Nb6? 19.a3+–)) 16.dc5 (16.bc5!? h6 17.Nh3=) 16...h6–/+ 17.Qe3 (17.Nh3 a5 18.Bd6–/+) 17...Be7 (better 17...Kd8 18.Nh3 a5 19.ba5 Ra5–+) 18.Bd6= Qd8 (better 18...Ng8 19.Nh3 Qb7=) 19.Be7?? (better 19.Nh3+=) 19...Qe7–+ 20.Qe7 Ke7 21.Nh3 Rhe8 (21...Rhb8!? 22.b5 Nc5 23.bc6 Kd6–+) 22.0-0-0 Kf8 23.Bd3 (better 23.Nf4!?=+) 23...Bd3–+ 24.Rd3 a5 25.Rb3 (better 25.a3–+) 25...ab4 26.Rb4 Ra2 27.Kb1 Ra5 28.Rc1 Nc5 29.Nf2 Re3 (29...d4 30.Rd4 Rb8 31.Kc2 Ra2 32.Kd1–+) 30.Rb8 Ke7?? (better 30...Ne8 31.f4 Na6–+) 31.Nf5+– Kd7 32.Ne3 Nd3?? (32...g6+–) 33.Nd3 1–0. afsharian (1610) – sahilmaan, lichess.org, 2017.

5.c5 Qc7 6.e3 b6 7.d4 (7.Bf6 gf6 8.d4 a5=) 7...a5 (7...d6 8.cb6 ab6 9.Nf3=) 8.a3 (8.cb6 Qb6 9.ba5 Qa5 10.Bc3 Qf5=) 8...ab4=+ 9.ab4 Ra1 10.Ba1 d6 11.Nf3 (11.cb6 Qb6 12.b5 d5=) 11...bc5=+ 12.bc5 (12.dc5 dc5 13.b5 Nd5=+) 12...dc5 13.Be2 (13.dc5 Nbd7=+) 13...Nbd7 14.dc5 (14.Bc4 cd4 15.Bd4 Bd6–/+) 14...Bc5 15.0-0 0-0 16.Nbd2 (16.Qc2 Bb4=+) 16...Bb7 (16...e5 17.Qc2 Re8 18.Rb1=+) 17.Rb1 Rb8 (17...Ba8 18.Qc2=+) 18.Qc3 (18.Bf6 Ba6 (18...Nf6?! 19.Ba6 Nd5 20.Bb7=) 19.Qd1 Rb1 20.Nb1 Be2 21.Qe2 Nf6–/+) 18...Be7–/+ 19.Nc4 Ba6 (19...c5 20.Nfd2–/+) 20.Rb8=+ Qb8 21.Nce5?? (better 21.Qc2=+) 21…Qb1–+ (21...Qb1 22.Qe1 Qe1 23.Ne1 Be2 24.Nc6 Bd6–+) 0–1. jlbaf – zozo, net–chess.com, 2017.

5.c5 Qd8 6.d4 d5 7.Nc3 (7.Nf3 Be7=) 7...Nbd7 (7...b6 8.Nf3=) 8.Nf3 g6 (8...b6 9.e3=) 9.e3+= Bg7 10.Be2 Qc7 11.0-0 0-0 12.b5 e5 13.a4 e4 (13...Re8 14.Rfe1+=) 14.Nd2 Ne8 (14...Nb8 15.a5+=) 15.a5 Qd8 (15...Nef6 16.Qc2+=) 16.a6+/– Kh8 (16...Nc7 17.ab7 Bb7 18.b6 ab6 19.cb6+=) 17.Rfb1 (17.Ra3 Ndf6+/–) 17...ba6 (17...Nc7 18.ab7 Bb7 19.Ra3+/–) 18.bc6 Rb8?? (better is 18...Ndf6+/–) 19.Qd5+– (19.cd7?! Rb3 20.dc8Q Qc8 21.Nb3 Nc7+–) 19...Nc7 20.Qd6 (20.cd7?! Nd5 21.dc8Q Rc8 22.Nde4 Nb4+=; 20.Qe4?! Ne5 21.Qf4 Nc6+–) 20...Ne8 21.Qf4 (21.cd7?! Nd6 22.Nde4 Qd7 23.Nd6 f5+=) 21...Rb2 (21...Ne5 22.Nde4 (22.Qe4?! Bf5 23.Qd5 Qc7+–; 22.Ba6?! Ba6 23.Ra6 Nd3 24.Qe4 Nc5 25.dc5 Qd2+–) 22...Nc6 23.Bc4+– (worse is 23.Ba6 Ba6 24.Ra6 Nb4 25.Ra7 Nd3+–)) 22.Rb2 (22.cd7?! Rb1 23.Rb1 Qd7 24.Nde4 f5+–) 22...Nc5 23.Nde4 (23.Nce4 Ne6 24.Qb8 f5+–) 23...Ne6 24.Qb8 f5 25.Nd2 N8c7 26.Nf3 (26.Bc4 f4 27.Be6 Ne6+–) 26...f4 (26...Qd6 27.Qa7 Qc6 28.Rc1+–) 27.Qa7 (27.Rc1 fe3 28.fe3 g5+–) 27...g5 (27...fe3 28.fe3 Qe8 29.Rc2+– (29.Ba6?! Ba6 30.Qb6 Bc4+/–)) 28.Ne5 (28.Rab1 g4 29.Ne5 fe3 30.fe3 Be5 31.de5 Qg5+–) 28...Be5 (28...fe3 29.fe3 Be5 30.de5+–) 29.de5 g4 (29...Qe8 30.Bf3+–) 30.Bg4 Qg5 31.Bf3 (31.Be6 Ne6 32.Ra5 f3+=) 31...Qe5 32.Rc1 (32.Na4 Ng5 33.Qd4 Nf3 34.gf3 Qd4 35.ed4 Kg7+–) 32...Ng5 (32...Nb5 33.Rb5 ab5+–) 33.Qd4 Qd4 (33...Nf3 34.gf3 Qg7 35.Qg7 Kg7 36.Rb8+–) 34.ed4 Rg8 (34...Nf3 35.gf3 Be6 36.Rb7 Rg8 37.Kh1+–) 35.Be4 (35.Bd1 f3 36.g3 Rd8+–) 35...f3 36.g3 Bh3 (36...Kg7 37.Bd3+–) 37.Rd2 (37.Rb7 Rg7+–) 37...Bg2 (37...Rd8 38.Bc2+–) 38.h4 Nb5 (38...Ne4 39.Ne4 Rd8+–) 39.hg5 Rg5 The mate threat is Rh5 40.c7 (better is 40.Rd3 Rh5 41.Bf3 Bf3 42.Rf3 Na7+–) 40...Nc7 41.Rd3 Rh5 The mate threat is Rh1 42.Bf3 Rh1 43.Kg2 Rc1 44.d5 Ne8 (44...Kg7 45.Ne2 Ra1 46.Nf4+–) 45.d6 Nd6 46.Ne2 (46.Ne2 Rb1 47.Rd6+–) 1–0. Schiefelbusch,Dirk (2130) – Hombrecher,Kai (1915), It (open) Dortmund (Germany), 2005.

5.Bf6 gf6 6.c5 Qc7=.

5.Bb2 e6 6.e3 Be7 7.Nf3 a5 8.a3 ab4 9.ab4 Ra1 10.Ba1 d6 11.d4 dc5 (11...b6 12.cd6 Bd6 13.Nc3=) 12.dc5 (better is 12.bc5 Nbd7 13.Bd3+=) 12...0-0?? (better is 12...Nbd7=) 13.Be5+– Qd7 14.Bb8 b6 15.cb6 Qb7 16.Ba7 Nd5 17.Nd4 (17.b5!? Nb6 18.Bb6 Qb6+–) 17...Bb4 18.Nd2 e5 19.Nc2 Bd6? (19...Ba5 20.Na3 Nb6 21.Bb6 Qb6 22.Qb6 Bb6+–) 20.Bc4 Be6 (20...Bc5 21.Nf3 e4 22.Nd2+–) 21.Ne4 Be7 22.0-0 Ne3 (22...Nb6 23.Be6 Qa7+–) 23.Ne3 Bc4 24.Nc4 Rd8 (24...c5 25.Qf3 Qc6 26.Rb1+–) 25.h3 (25.Na5 Qd7 26.b7 h6+–) 25...h6 (25...Rd5+–) 26.Na5 Qa6 27.Nc6 Rd3 (27...Re8 28.Ne7 Re7 29.Nc5+–) 28.Ne7 Kh8 29.Qb4 (29.Qf7 Rd8 30.Ng6 Kh7 31.Nf6) 29...f6 30.Nc5 Qa2 31.Nd3 1–0. gutes – zorec, kurnik, 2012.

5.Nf3 e5 6.Bb2 d6 7.e3 Be7 8.d4 e4 9.Nfd2 d5 10.Nc3 0-0 11.b5 Bf5 12.a4 Nbd7 13.a5 Be6 ½–½. Becker,Godelind – Mulde,Ralf, DESC, 2006.

5.Nf3 Bf5 6.Bb2 e6 7.a3 Be7 8.d4 h6 9.Nbd2 Nbd7 10.Be2 0-0 11.0-0 a5 12.c5 Qc7 13.h3 ab4 14.ab4 (worse 14.Qb4 b6-/+) 14...Ne4 (14...b6 15.Qc3=) 15.b5 Nd2 16.Nd2 e5 (16...cb5 17.Bb5 Nf6 18.Be2=) 17.b6+= Qb8 18.Ra8 Qa8 19.Ra1 Qb8 20.Ra7 Bf6 (20...ed4 21.ed4 Bf6 22.Qf3+=) 21.g4 (21.Qb4 Re8+/-) 21...Bg6+= 22.Ba1 (22.de5 Be7= (22...Nc5? 23.Qb4 Be7 24.Bd4+-)) 22...Re8= 23.Ba6 (23.Qb4 ed4 24.Bd4 Bd4 25.Qd4 Nf8=) 23...Nc5+= 24.dc5 ba6 25.Ra6 (better 25.Qa4+=) 25...Be7?? (better 25...Kh7=) 26.b7+- Qc7?? (26...f6 27.Ra8 Qa8 28.ba8Q Ra8 29.Be5 fe5+-) 27.Ra8 Rb8 28.Rb8 Qb8 29.Be5! Bc5 (29...Qe5 30.b8Q Double attack (30.b8Q Decoy)) 30.Bb8 1-0. jhonores (2135) - Andreeff82 (2130), Rated Blitz game, lichess.org, 2020.

5.Nf3 Bg4 6.Ne5 Bf5 7.d4 Nbd7 8.f4 e6 9.a3 h6 10.Bd3 Bd3 11.Qd3 a5 12.ba5 (12.c5 Qa6 13.Qa6 Ra6=) 12...Ra5 (12...Qa5 13.Nd2=+) 13.0-0 Ra8 (13...Qa6 14.Qc2=) 14.f5 (14.c5 Qa6=) 14...dc4 (14...Qc7!? 15.Nd7 Qd7 16.fe6 Qe6=) 15.Nc4+= Qc7 16.fe6 fe6 17.Qg6 Kd8 18.Nc3 b5 19.Ne5?? (better 19.Nd2+=) 19...Ne5-/+ 20.de5 Qe5 21.Rd1 Bd6 (21...Ke7 22.Bb2 Qe3 23.Kh1-/+) 22.g3 (22.Qg7!? Nd7 23.Qe5 Be5 24.Bb2-/+) 22...Nd5-+ (22...Qc3 23.Qg7 Rh7 24.Rd6 Kc8 25.Rc6 Qc6 26.Qf6=+) 23.Ne4 Be7 (23...Qa1 24.Qe6 Qe5 25.Qd6 Qd6 26.Nd6-+) 24.Bd2? (better 24.Ra2!? Rf8 25.Nf2-/+) 24...Rf8-+ (24...Ba3 25.Bc3 Qf5 26.Qg7 Qe4 27.Bf6 (27.Qh8?! Ke7 28.Qg7 Kd6+=) 27...Kc8 28.Qh8 Kb7 A) 29.Qh6?! Bf8 (29...Qe3?? 30.Qe3 Ne3 31.Rd7 Kb6 32.Bd4 c5 33.Be3+-; 29...Ne3?! 30.Rd7 Kb6 31.Bd4 Bc5 32.Bc5 Kc5 33.Rc1 Kb6 34.Rd2=) 30.Qh5 Qe3 31.Kg2 Qe4 32.Kh3 Nf6 33.Qf7 Kb6 34.Ra8 Qg4 35.Kg2 Qe2 36.Kh3 Qg4 37.Kg2 Qe2 38.Kh3 Qg4=; B) 29.Qg7 Nc7 30.Qh6+/-; 24...Ra3?! 25.Ra3 Ba3 26.Bc3-/+) 25.Rac1 Kd7 (better 25...Qf5 26.Qf5 ef5-+ (26...Rf5?! 27.Nf2-/+)) 26.Bb4-/+ Bb4 27.ab4 Ra2 28.Nc5? (better 28.Kh1!?-/+) 28...Ke7-+ 29.Ne4?? (29.Qe6 Qe6 30.Ne6 Ke6 31.Rc6 Ke5 32.Rc5-+) 29...Qf5 (better 29...Ne3 30.Rd6 Nf5 31.Re6 Qe6 32.Qe6 Ke6 33.Nc5 Kd5-+) 30.Qg7-/+ Rf7 31.Qd4 Qf3 32.Rd2 Rd2 33.Nd2 Qf2 34.Kh1 Ne3 (34...Qe3!? 35.Qe3 Ne3-+) 35.Qc5=+ Kd7?? (better 35...Ke8 36.Qc6 Kf8 37.Qd6 Re7=+) 36.Qc6+- Ke7 (36...Ke7 37.Qc5 Ke8 38.Qc8 Ke7 39.Rc7 Kf6 40.Ne4 Ke5 41.Nf2 Rf2+-). jhonores (2185) - Nath21 (2105), Rated Blitz game, lichess.org, 2020.

4.e4 d6=+.

5.Nc3=+.

5.Be2=+.

5.a3 Qa5=+.

5.Nc3 d6 6.Qc2=+.

5.Nc3 d6 6.Be2=+.

5.Nc3 g6 6.a3 Qa5=+.

5.Nc3 g6 6.Rb1 Qa5 7.Be2 (7.Qb3 Bg7=+) 7...Bg7 8.0-0 0-0 9.Nd4 (9.Qb3 d6=+) 9...Rd8 (9...d5 10.Qc2–/+) 10.Nb3 Qc7 11.d4 (11.Bb2 d6=+) 11...d5 12.Bd2 (12.cd5 Bf5 13.Bd3 Bd3 14.Qd3 Ng4–/+) 12...dc4 13.Bc4 e5 (13...Bf5 14.Rc1–/+) 14.Qe2 (14.Qf3 Nbd7–/+) 14...b5 15.Bd3 a5 16.Rbc1 (16.Qf3 a4 17.Nb5 Qe7–+ (worse 17...cb5 18.Qa8 Nc6 19.Na5+–)) 16...a4–+ 17.Nc5 (17.de5 ab3 18.ef6 Qd6 (18...Bf6?! 19.ab3 Qd6 20.Ne4 Qd3 21.Nf6 Kg7 22.Ne8 Kf8 23.Qd3 Rd3 24.Nc7=) 19.Bb5 A) 19...Qd2?! 20.Rfd1 Qc1 21.Rc1 Bf6 22.Ne4=+ (worse 22.ab3 Bc3 23.Bc4 Ba6–/+); B) 19...Qf6=) 17...ed4 18.ed4 Nbd7 (18...Ng4!? 19.g3 Bd4 20.Bf4–+) 19.Nd7 (19.Nb5!? Qb8 20.Nc3=+) 19...Qd7–/+ (worse 19...Nd7 20.Nd5 Qd6 21.Ne7 Kh8 22.Nc6+–) 20.Be3 Qe7 (20...Ng4 21.Rfd1–/+) 21.Rfe1 (21.Qf3 Bb7 22.Qd1 Nd5 23.Nd5 Rd5–/+ (23...cd5?! 24.Bb5 Ba6 25.Ba6 Ra6 26.Rc5=)) 21...b4 22.Nd1 a3 (22...Qe6 23.Rc5–/+) 23.Rc6=+ b3 24.Rc1 (better 24.Nc3!?=+) 24...b2–+ 25.Rb1 Ng4 0–1. alexp – zozo, net–chess.com, 2017.

5.Nc3 g6 6.Qc2 Bg7 7.d4 0-0 8.a3 (8.Rb1 Qa5=+) 8...Qa5 9.Bd3 d5 (9...d6 10.Rb1=+) 10.0-0 (10.Bd2 Qc7=+) 10...Nbd7 (10...dc4 11.Bc4 c5 12.Bd2 cd4 13.Nb5=) 11.cd5 cd5 12.a4 Qd8 13.Nb5 a6 14.Nc7 Rb8 (14...Ra7 15.a5=) 15.Rb1 e6? (better 15...Bh8=) 16.Ba3+– Ne8 17.Bf8 Nf8 (better 17...Bf8!? 18.Ne8 Qe8+–) 18.Ne8+– Qe8 19.Ba6! Nd7 (19...ba6 20.Rb8 Pinning (20.Rb8 Deflection)) 20.Bb5 Qe7 (20...Qd8 21.Rfc1+–) 21.Qc7 1–0. zozo – jlbaf, net–chess.com, 2017.